Imported Upstream version 3.10.0upstream/3.10.0

685 files changed, 18523 insertions, 15568 deletions

diff --git a/Source/.gitattributes b/Source/.gitattributes
deleted file mode 100644
index 0f829a368..000000000
--- a/Source/.gitattributes
+++ /dev/null
@@ -1,2 +0,0 @@
-# Do not format third-party sources.
-/kwsys/**                                  -format.clang-format
diff --git a/Source/CMakeLists.txt b/Source/CMakeLists.txt
index 40403ca25..a4dd91860 100644
--- a/Source/CMakeLists.txt
+++ b/Source/CMakeLists.txt
@@ -307,8 +307,9 @@ set(SRCS
   cmPropertyDefinitionMap.h
   cmPropertyMap.cxx
   cmPropertyMap.h
-  cmQtAutoGeneratorCommon.cxx
-  cmQtAutoGeneratorCommon.h
+  cmQtAutoGen.cxx
+  cmQtAutoGen.h
+  cmQtAutoGenDigest.h
   cmQtAutoGeneratorInitializer.cxx
   cmQtAutoGeneratorInitializer.h
   cmQtAutoGenerators.cxx
@@ -469,6 +470,8 @@ set(SRCS
   cmIncludeDirectoryCommand.h
   cmIncludeExternalMSProjectCommand.cxx
   cmIncludeExternalMSProjectCommand.h
+  cmIncludeGuardCommand.cxx
+  cmIncludeGuardCommand.h
   cmIncludeRegularExpressionCommand.cxx
   cmIncludeRegularExpressionCommand.h
   cmInstallCommand.cxx
@@ -584,7 +587,6 @@ set(SRCS
   cmWriteFileCommand.cxx
   cmWriteFileCommand.h
 
-  cm_auto_ptr.hxx
   cm_get_date.h
   cm_get_date.c
   cm_utf8.h
@@ -777,6 +779,8 @@ if(WIN32 AND NOT UNIX)
   target_link_libraries(CMakeLib rpcrt4 crypt32)
 endif()
 
+target_compile_definitions(CMakeLib PUBLIC ${CLANG_TIDY_DEFINITIONS})
+
 #
 # CTestLib
 #
@@ -874,6 +878,7 @@ set(CPACK_SRCS
   CPack/cmCPackTarCompressGenerator.cxx
   CPack/cmCPackZIPGenerator.cxx
   CPack/cmCPack7zGenerator.cxx
+  CPack/cmCPackDebGenerator.cxx
   )
 # CPack IFW generator
 set(CPACK_SRCS ${CPACK_SRCS}
@@ -896,11 +901,39 @@ if(CYGWIN)
     )
 endif()
 
+option(CPACK_ENABLE_FREEBSD_PKG "Add FreeBSD pkg(8) generator to CPack." OFF)
+
 if(UNIX)
   set(CPACK_SRCS ${CPACK_SRCS}
-    CPack/cmCPackDebGenerator.cxx
     CPack/cmCPackRPMGenerator.cxx
     )
+
+  # Optionally, try to use pkg(8)
+  if(CPACK_ENABLE_FREEBSD_PKG)
+    # On UNIX, you may find FreeBSD's pkg(8) and attendant
+    # library -- it can be used on FreeBSD, Dragonfly, NetBSD,
+    # OpenBSD and also Linux and OSX. Look for the header and
+    # the library; it's a warning on FreeBSD if they're not
+    # found, and informational on other platforms.
+    find_path(FREEBSD_PKG_INCLUDE_DIRS "pkg.h" PATHS /usr/local)
+    if(FREEBSD_PKG_INCLUDE_DIRS)
+      find_library(FREEBSD_PKG_LIBRARIES
+        pkg
+        DOC "FreeBSD pkg(8) library")
+      if(FREEBSD_PKG_LIBRARIES)
+        set(CPACK_SRCS ${CPACK_SRCS}
+          CPack/cmCPackFreeBSDGenerator.cxx
+          )
+      endif()
+    endif()
+
+    if (NOT FREEBSD_PKG_INCLUDE_DIRS OR NOT FREEBSD_PKG_LIBRARIES)
+      message(FATAL_ERROR "CPack needs libpkg(3) to produce FreeBSD packages natively.")
+    endif()
+  else()
+    set(FREEBSD_PKG_INCLUDE_DIRS NOTFOUND)
+    set(FREEBSD_PKG_LIBRARIES NOTFOUND)
+  endif()
 endif()
 
 if(WIN32)
@@ -958,6 +991,11 @@ if(APPLE)
       "See CMakeFiles/CMakeError.log for details of the failure.")
   endif()
 endif()
+if(CPACK_ENABLE_FREEBSD_PKG AND FREEBSD_PKG_INCLUDE_DIRS AND FREEBSD_PKG_LIBRARIES)
+  target_link_libraries(CPackLib ${FREEBSD_PKG_LIBRARIES})
+  include_directories(${FREEBSD_PKG_INCLUDE_DIRS})
+  add_definitions(-DHAVE_FREEBSD_PKG)
+endif()
 
 if(APPLE)
   add_executable(cmakexbuild cmakexbuild.cxx)
@@ -974,18 +1012,16 @@ add_executable(cmake cmakemain.cxx cmcmd.cxx cmcmd.h ${MANIFEST_FILE})
 list(APPEND _tools cmake)
 target_link_libraries(cmake CMakeLib)
 
-if(CMake_ENABLE_SERVER_MODE)
-  add_library(CMakeServerLib
-    cmFileMonitor.cxx cmFileMonitor.h
-    cmServer.cxx cmServer.h
-    cmServerConnection.cxx cmServerConnection.h
-    cmServerProtocol.cxx cmServerProtocol.h
-    )
-  target_link_libraries(CMakeServerLib CMakeLib)
-  set_property(SOURCE cmcmd.cxx APPEND PROPERTY COMPILE_DEFINITIONS HAVE_SERVER_MODE=1)
-
-  target_link_libraries(cmake CMakeServerLib)
-endif()
+add_library(CMakeServerLib
+  cmConnection.h cmConnection.cxx
+  cmFileMonitor.cxx cmFileMonitor.h
+  cmPipeConnection.cxx cmPipeConnection.h
+  cmServer.cxx cmServer.h
+  cmServerConnection.cxx cmServerConnection.h
+  cmServerProtocol.cxx cmServerProtocol.h
+  )
+target_link_libraries(CMakeServerLib CMakeLib)
+target_link_libraries(cmake CMakeServerLib)
 
 # Build CTest executable
 add_executable(ctest ctest.cxx ${MANIFEST_FILE})
diff --git a/Source/CMakeVersion.cmake b/Source/CMakeVersion.cmake
index 5bd328ee3..8a93c36ca 100644
--- a/Source/CMakeVersion.cmake
+++ b/Source/CMakeVersion.cmake
@@ -1,5 +1,5 @@
 # CMake version number components.
 set(CMake_VERSION_MAJOR 3)
-set(CMake_VERSION_MINOR 9)
-set(CMake_VERSION_PATCH 6)
+set(CMake_VERSION_MINOR 10)
+set(CMake_VERSION_PATCH 0)
 #set(CMake_VERSION_RC 0)
diff --git a/Source/CPack/IFW/cmCPackIFWCommon.cxx b/Source/CPack/IFW/cmCPackIFWCommon.cxx
index e8f05bd50..1e7264156 100644
--- a/Source/CPack/IFW/cmCPackIFWCommon.cxx
+++ b/Source/CPack/IFW/cmCPackIFWCommon.cxx
@@ -15,14 +15,14 @@
 #include <vector>
 
 cmCPackIFWCommon::cmCPackIFWCommon()
-  : Generator(CM_NULLPTR)
+  : Generator(nullptr)
 {
 }
 
 const char* cmCPackIFWCommon::GetOption(const std::string& op) const
 {
   return this->Generator ? this->Generator->cmCPackGenerator::GetOption(op)
-                         : CM_NULLPTR;
+                         : nullptr;
 }
 
 bool cmCPackIFWCommon::IsOn(const std::string& op) const
diff --git a/Source/CPack/IFW/cmCPackIFWGenerator.cxx b/Source/CPack/IFW/cmCPackIFWGenerator.cxx
index 226ea0a29..825a88804 100644
--- a/Source/CPack/IFW/cmCPackIFWGenerator.cxx
+++ b/Source/CPack/IFW/cmCPackIFWGenerator.cxx
@@ -49,10 +49,22 @@ int cmCPackIFWGenerator::PackageFiles()
     ifwCmd += " -p " + this->toplevel + "/packages";
 
     if (!this->PkgsDirsVector.empty()) {
-      for (std::vector<std::string>::iterator it =
-             this->PkgsDirsVector.begin();
-           it != this->PkgsDirsVector.end(); ++it) {
-        ifwCmd += " -p " + *it;
+      for (std::string const& it : this->PkgsDirsVector) {
+        ifwCmd += " -p " + it;
+      }
+    }
+
+    if (!this->RepoDirsVector.empty()) {
+      if (!this->IsVersionLess("3.1")) {
+        for (std::string const& rd : this->RepoDirsVector) {
+          ifwCmd += " --repository " + rd;
+        }
+      } else {
+        cmCPackIFWLogger(WARNING, "The \"CPACK_IFW_REPOSITORIES_DIRECTORIES\" "
+                           << "variable is set, but content will be skiped, "
+                           << "because this feature available only since "
+                           << "QtIFW 3.1. Please update your QtIFW instance."
+                           << std::endl);
       }
     }
 
@@ -73,7 +85,7 @@ int cmCPackIFWGenerator::PackageFiles()
     int retVal = 1;
     cmCPackIFWLogger(OUTPUT, "- Generate repository" << std::endl);
     bool res = cmSystemTools::RunSingleCommand(ifwCmd.c_str(), &output,
-                                               &output, &retVal, CM_NULLPTR,
+                                               &output, &retVal, nullptr,
                                                this->GeneratorVerbose, 0);
     if (!res || retVal) {
       cmGeneratedFileStream ofs(ifwTmpFile.c_str());
@@ -121,10 +133,22 @@ int cmCPackIFWGenerator::PackageFiles()
     ifwCmd += " -p " + this->toplevel + "/packages";
 
     if (!this->PkgsDirsVector.empty()) {
-      for (std::vector<std::string>::iterator it =
-             this->PkgsDirsVector.begin();
-           it != this->PkgsDirsVector.end(); ++it) {
-        ifwCmd += " -p " + *it;
+      for (std::string const& it : this->PkgsDirsVector) {
+        ifwCmd += " -p " + it;
+      }
+    }
+
+    if (!this->RepoDirsVector.empty()) {
+      if (!this->IsVersionLess("3.1")) {
+        for (std::string const& rd : this->RepoDirsVector) {
+          ifwCmd += " --repository " + rd;
+        }
+      } else {
+        cmCPackIFWLogger(WARNING, "The \"CPACK_IFW_REPOSITORIES_DIRECTORIES\" "
+                           << "variable is set, but content will be skipped, "
+                           << "because this feature available only since "
+                           << "QtIFW 3.1. Please update your QtIFW instance."
+                           << std::endl);
       }
     }
 
@@ -164,13 +188,14 @@ int cmCPackIFWGenerator::PackageFiles()
       ifwCmd += " " + this->packageFileNames[0];
     } else {
       ifwCmd += " installer";
+      ifwCmd += this->OutputExtension;
     }
     cmCPackIFWLogger(VERBOSE, "Execute: " << ifwCmd << std::endl);
     std::string output;
     int retVal = 1;
     cmCPackIFWLogger(OUTPUT, "- Generate package" << std::endl);
     bool res = cmSystemTools::RunSingleCommand(ifwCmd.c_str(), &output,
-                                               &output, &retVal, CM_NULLPTR,
+                                               &output, &retVal, nullptr,
                                                this->GeneratorVerbose, 0);
     if (!res || retVal) {
       cmGeneratedFileStream ofs(ifwTmpFile.c_str());
@@ -205,7 +230,7 @@ const char* cmCPackIFWGenerator::GetPackagingInstallPrefix()
 
 const char* cmCPackIFWGenerator::GetOutputExtension()
 {
-  return this->ExecutableSuffix.c_str();
+  return this->OutputExtension.c_str();
 }
 
 int cmCPackIFWGenerator::InitializeInternal()
@@ -225,7 +250,7 @@ int cmCPackIFWGenerator::InitializeInternal()
 
   const char* BinCreatorStr = this->GetOption(BinCreatorOpt);
   if (!BinCreatorStr || cmSystemTools::IsNOTFOUND(BinCreatorStr)) {
-    this->BinCreator = "";
+    this->BinCreator.clear();
   } else {
     this->BinCreator = BinCreatorStr;
   }
@@ -241,7 +266,7 @@ int cmCPackIFWGenerator::InitializeInternal()
 
   const char* RepoGenStr = this->GetOption(RepoGenOpt);
   if (!RepoGenStr || cmSystemTools::IsNOTFOUND(RepoGenStr)) {
-    this->RepoGen = "";
+    this->RepoGen.clear();
   } else {
     this->RepoGen = RepoGenStr;
   }
@@ -265,6 +290,13 @@ int cmCPackIFWGenerator::InitializeInternal()
     cmSystemTools::ExpandListArgument(dirs, this->PkgsDirsVector);
   }
 
+  // Additional repositories dirs
+  this->RepoDirsVector.clear();
+  if (const char* dirs =
+        this->GetOption("CPACK_IFW_REPOSITORIES_DIRECTORIES")) {
+    cmSystemTools::ExpandListArgument(dirs, this->RepoDirsVector);
+  }
+
   // Installer
   this->Installer.Generator = this;
   this->Installer.ConfigureFromOptions();
@@ -281,9 +313,8 @@ int cmCPackIFWGenerator::InitializeInternal()
   if (const char* RepoAllStr = this->GetOption("CPACK_IFW_REPOSITORIES_ALL")) {
     std::vector<std::string> RepoAllVector;
     cmSystemTools::ExpandListArgument(RepoAllStr, RepoAllVector);
-    for (std::vector<std::string>::iterator rit = RepoAllVector.begin();
-         rit != RepoAllVector.end(); ++rit) {
-      this->GetRepository(*rit);
+    for (std::string const& r : RepoAllVector) {
+      this->GetRepository(r);
     }
   }
 
@@ -305,16 +336,29 @@ int cmCPackIFWGenerator::InitializeInternal()
   }
 
   // Executable suffix
-  if (const char* optExeSuffix = this->GetOption("CMAKE_EXECUTABLE_SUFFIX")) {
-    this->ExecutableSuffix = optExeSuffix;
-    if (this->ExecutableSuffix.empty()) {
-      std::string sysName(this->GetOption("CMAKE_SYSTEM_NAME"));
-      if (sysName == "Linux") {
-        this->ExecutableSuffix = ".run";
-      }
-    }
+  std::string exeSuffix(this->GetOption("CMAKE_EXECUTABLE_SUFFIX"));
+  std::string sysName(this->GetOption("CMAKE_SYSTEM_NAME"));
+  if (sysName == "Linux") {
+    this->ExecutableSuffix = ".run";
+  } else if (sysName == "Windows") {
+    this->ExecutableSuffix = ".exe";
+  } else if (sysName == "Darwin") {
+    this->ExecutableSuffix = ".app";
   } else {
-    this->ExecutableSuffix = this->cmCPackGenerator::GetOutputExtension();
+    this->ExecutableSuffix = exeSuffix;
+  }
+
+  // Output extension
+  if (const char* optOutExt =
+        this->GetOption("CPACK_IFW_PACKAGE_FILE_EXTENSION")) {
+    this->OutputExtension = optOutExt;
+  } else if (sysName == "Darwin") {
+    this->OutputExtension = ".dmg";
+  } else {
+    this->OutputExtension = this->ExecutableSuffix;
+  }
+  if (this->OutputExtension.empty()) {
+    this->OutputExtension = this->cmCPackGenerator::GetOutputExtension();
   }
 
   return this->Superclass::InitializeInternal();
@@ -520,7 +564,7 @@ cmCPackIFWPackage* cmCPackIFWGenerator::GetGroupPackage(
 {
   std::map<cmCPackComponentGroup*, cmCPackIFWPackage*>::const_iterator pit =
     this->GroupPackages.find(group);
-  return pit != this->GroupPackages.end() ? pit->second : CM_NULLPTR;
+  return pit != this->GroupPackages.end() ? pit->second : nullptr;
 }
 
 cmCPackIFWPackage* cmCPackIFWGenerator::GetComponentPackage(
@@ -528,7 +572,7 @@ cmCPackIFWPackage* cmCPackIFWGenerator::GetComponentPackage(
 {
   std::map<cmCPackComponent*, cmCPackIFWPackage*>::const_iterator pit =
     this->ComponentPackages.find(component);
-  return pit != this->ComponentPackages.end() ? pit->second : CM_NULLPTR;
+  return pit != this->ComponentPackages.end() ? pit->second : nullptr;
 }
 
 cmCPackIFWRepository* cmCPackIFWGenerator::GetRepository(
@@ -550,7 +594,7 @@ cmCPackIFWRepository* cmCPackIFWGenerator::GetRepository(
     }
   } else {
     this->Repositories.erase(repositoryName);
-    repository = CM_NULLPTR;
+    repository = nullptr;
     cmCPackIFWLogger(WARNING, "Invalid repository \""
                        << repositoryName << "\""
                        << " configuration. Repository will be skipped."
diff --git a/Source/CPack/IFW/cmCPackIFWGenerator.h b/Source/CPack/IFW/cmCPackIFWGenerator.h
index 8348ceeec..919dd4678 100644
--- a/Source/CPack/IFW/cmCPackIFWGenerator.h
+++ b/Source/CPack/IFW/cmCPackIFWGenerator.h
@@ -47,7 +47,7 @@ public:
   /**
    * Destruct IFW generator
    */
-  ~cmCPackIFWGenerator() CM_OVERRIDE;
+  ~cmCPackIFWGenerator() override;
 
 protected:
   // cmCPackGenerator reimplementation
@@ -56,18 +56,18 @@ protected:
    * @brief Initialize generator
    * @return 0 on failure
    */
-  int InitializeInternal() CM_OVERRIDE;
-  int PackageFiles() CM_OVERRIDE;
-  const char* GetPackagingInstallPrefix() CM_OVERRIDE;
+  int InitializeInternal() override;
+  int PackageFiles() override;
+  const char* GetPackagingInstallPrefix() override;
 
   /**
-   * @brief Extension of binary installer
-   * @return Executable suffix or value from default implementation
+   * @brief Target binary extension
+   * @return Executable suffix or disk image format
    */
-  const char* GetOutputExtension() CM_OVERRIDE;
+  const char* GetOutputExtension() override;
 
   std::string GetComponentInstallDirNameSuffix(
-    const std::string& componentName) CM_OVERRIDE;
+    const std::string& componentName) override;
 
   /**
    * @brief Get Component
@@ -79,7 +79,7 @@ protected:
    * @return Pointer to component
    */
   cmCPackComponent* GetComponent(const std::string& projectName,
-                                 const std::string& componentName) CM_OVERRIDE;
+                                 const std::string& componentName) override;
 
   /**
    * @brief Get group of component
@@ -91,12 +91,12 @@ protected:
    * @return Pointer to component group
    */
   cmCPackComponentGroup* GetComponentGroup(
-    const std::string& projectName, const std::string& groupName) CM_OVERRIDE;
+    const std::string& projectName, const std::string& groupName) override;
 
-  enum cmCPackGenerator::CPackSetDestdirSupport SupportsSetDestdir() const
-    CM_OVERRIDE;
-  bool SupportsAbsoluteDestination() const CM_OVERRIDE;
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  enum cmCPackGenerator::CPackSetDestdirSupport SupportsSetDestdir()
+    const override;
+  bool SupportsAbsoluteDestination() const override;
+  bool SupportsComponentInstallation() const override;
 
 protected:
   // Methods
@@ -143,10 +143,12 @@ private:
   std::string BinCreator;
   std::string FrameworkVersion;
   std::string ExecutableSuffix;
+  std::string OutputExtension;
 
   bool OnlineOnly;
   bool ResolveDuplicateNames;
   std::vector<std::string> PkgsDirsVector;
+  std::vector<std::string> RepoDirsVector;
 };
 
 #endif
diff --git a/Source/CPack/IFW/cmCPackIFWInstaller.cxx b/Source/CPack/IFW/cmCPackIFWInstaller.cxx
index 288e924e5..422f5d5e7 100644
--- a/Source/CPack/IFW/cmCPackIFWInstaller.cxx
+++ b/Source/CPack/IFW/cmCPackIFWInstaller.cxx
@@ -262,7 +262,7 @@ public:
   std::string path, basePath;
 
 protected:
-  void StartElement(const std::string& name, const char** /*atts*/) CM_OVERRIDE
+  void StartElement(const std::string& name, const char** /*atts*/) override
   {
     this->file = name == "file";
     if (file) {
@@ -270,7 +270,7 @@ protected:
     }
   }
 
-  void CharacterDataHandler(const char* data, int length) CM_OVERRIDE
+  void CharacterDataHandler(const char* data, int length) override
   {
     if (this->file) {
       std::string content(data, data + length);
@@ -284,7 +284,7 @@ protected:
     }
   }
 
-  void EndElement(const std::string& /*name*/) CM_OVERRIDE {}
+  void EndElement(const std::string& /*name*/) override {}
 };
 
 void cmCPackIFWInstaller::GenerateInstallerFile()
@@ -406,9 +406,8 @@ void cmCPackIFWInstaller::GenerateInstallerFile()
   // Remote repositories
   if (!this->RemoteRepositories.empty()) {
     xout.StartElement("RemoteRepositories");
-    for (RepositoriesVector::iterator rit = this->RemoteRepositories.begin();
-         rit != this->RemoteRepositories.end(); ++rit) {
-      (*rit)->WriteRepositoryConfig(xout);
+    for (cmCPackIFWRepository* r : this->RemoteRepositories) {
+      r->WriteRepositoryConfig(xout);
     }
     xout.EndElement();
   }
@@ -492,9 +491,8 @@ void cmCPackIFWInstaller::GeneratePackageFiles()
   }
 
   // Generate packages meta information
-  for (PackagesMap::iterator pit = this->Packages.begin();
-       pit != this->Packages.end(); ++pit) {
-    cmCPackIFWPackage* package = pit->second;
+  for (auto& p : this->Packages) {
+    cmCPackIFWPackage* package = p.second;
     package->GeneratePackageFile();
   }
 }
diff --git a/Source/CPack/IFW/cmCPackIFWPackage.cxx b/Source/CPack/IFW/cmCPackIFWPackage.cxx
index c5311c31c..d3ce15c86 100644
--- a/Source/CPack/IFW/cmCPackIFWPackage.cxx
+++ b/Source/CPack/IFW/cmCPackIFWPackage.cxx
@@ -92,7 +92,7 @@ std::string cmCPackIFWPackage::DependenceStruct::NameWithCompare() const
 
 //------------------------------------------------------ cmCPackIFWPackage ---
 cmCPackIFWPackage::cmCPackIFWPackage()
-  : Installer(CM_NULLPTR)
+  : Installer(nullptr)
 {
 }
 
@@ -111,19 +111,19 @@ void cmCPackIFWPackage::DefaultConfiguration()
 {
   this->DisplayName.clear();
   this->Description.clear();
-  this->Version = "";
-  this->ReleaseDate = "";
-  this->Script = "";
+  this->Version.clear();
+  this->ReleaseDate.clear();
+  this->Script.clear();
   this->Licenses.clear();
   this->UserInterfaces.clear();
   this->Translations.clear();
-  this->SortingPriority = "";
-  this->UpdateText = "";
-  this->Default = "";
-  this->Essential = "";
-  this->Virtual = "";
-  this->ForcedInstallation = "";
-  this->RequiresAdminRights = "";
+  this->SortingPriority.clear();
+  this->UpdateText.clear();
+  this->Default.clear();
+  this->Essential.clear();
+  this->Virtual.clear();
+  this->ForcedInstallation.clear();
+  this->RequiresAdminRights.clear();
 }
 
 // Defaul configuration (all in one package)
@@ -203,10 +203,8 @@ int cmCPackIFWPackage::ConfigureFromComponent(cmCPackComponent* component)
 
   // CMake dependencies
   if (!component->Dependencies.empty()) {
-    std::vector<cmCPackComponent*>::iterator dit;
-    for (dit = component->Dependencies.begin();
-         dit != component->Dependencies.end(); ++dit) {
-      this->Dependencies.insert(this->Generator->ComponentPackages[*dit]);
+    for (cmCPackComponent* dep : component->Dependencies) {
+      this->Dependencies.insert(this->Generator->ComponentPackages[dep]);
     }
   }
 
@@ -413,9 +411,8 @@ int cmCPackIFWPackage::ConfigureFromPrefix(const std::string& prefix)
   if (const char* value = this->GetOption(option)) {
     cmSystemTools::ExpandListArgument(value, deps);
   }
-  for (std::vector<std::string>::iterator dit = deps.begin();
-       dit != deps.end(); ++dit) {
-    DependenceStruct dep(*dit);
+  for (std::string const& d : deps) {
+    DependenceStruct dep(d);
     if (this->Generator->Packages.count(dep.Name)) {
       cmCPackIFWPackage& depPkg = this->Generator->Packages[dep.Name];
       dep.Name = depPkg.Name;
@@ -435,9 +432,8 @@ int cmCPackIFWPackage::ConfigureFromPrefix(const std::string& prefix)
   } else if (const char* value = this->GetOption(option)) {
     std::vector<std::string> depsOn;
     cmSystemTools::ExpandListArgument(value, depsOn);
-    for (std::vector<std::string>::iterator dit = depsOn.begin();
-         dit != depsOn.end(); ++dit) {
-      DependenceStruct dep(*dit);
+    for (std::string const& d : depsOn) {
+      DependenceStruct dep(d);
       if (this->Generator->Packages.count(dep.Name)) {
         cmCPackIFWPackage& depPkg = this->Generator->Packages[dep.Name];
         dep.Name = depPkg.Name;
@@ -486,6 +482,15 @@ int cmCPackIFWPackage::ConfigureFromPrefix(const std::string& prefix)
     this->ForcedInstallation = "false";
   }
 
+  // Replaces
+  option = prefix + "REPLACES";
+  if (this->IsSetToEmpty(option)) {
+    this->Replaces.clear();
+  } else if (const char* value = this->GetOption(option)) {
+    this->Replaces.clear();
+    cmSystemTools::ExpandListArgument(value, this->Replaces);
+  }
+
   // Requires admin rights
   option = prefix + "REQUIRES_ADMIN_RIGHTS";
   if (this->IsSetToEmpty(option)) {
@@ -496,6 +501,16 @@ int cmCPackIFWPackage::ConfigureFromPrefix(const std::string& prefix)
     this->RequiresAdminRights = "false";
   }
 
+  // Checkable
+  option = prefix + "CHECKABLE";
+  if (this->IsSetToEmpty(option)) {
+    this->Checkable.clear();
+  } else if (this->IsOn(option)) {
+    this->Checkable = "true";
+  } else if (this->IsSetToOff(option)) {
+    this->Checkable = "false";
+  }
+
   return 1;
 }
 
@@ -521,26 +536,22 @@ void cmCPackIFWPackage::GeneratePackageFile()
   xout.StartElement("Package");
 
   // DisplayName (with translations)
-  for (std::map<std::string, std::string>::iterator it =
-         this->DisplayName.begin();
-       it != this->DisplayName.end(); ++it) {
+  for (auto const& dn : this->DisplayName) {
     xout.StartElement("DisplayName");
-    if (!it->first.empty()) {
-      xout.Attribute("xml:lang", it->first);
+    if (!dn.first.empty()) {
+      xout.Attribute("xml:lang", dn.first);
     }
-    xout.Content(it->second);
+    xout.Content(dn.second);
     xout.EndElement();
   }
 
   // Description (with translations)
-  for (std::map<std::string, std::string>::iterator it =
-         this->Description.begin();
-       it != this->Description.end(); ++it) {
+  for (auto const& d : this->Description) {
     xout.StartElement("Description");
-    if (!it->first.empty()) {
-      xout.Attribute("xml:lang", it->first);
+    if (!d.first.empty()) {
+      xout.Attribute("xml:lang", d.first);
     }
-    xout.Content(it->second);
+    xout.Content(d.second);
     xout.EndElement();
   }
 
@@ -568,46 +579,43 @@ void cmCPackIFWPackage::GeneratePackageFile()
 
   // User Interfaces (copy to meta dir)
   std::vector<std::string> userInterfaces = UserInterfaces;
-  for (size_t i = 0; i < userInterfaces.size(); i++) {
-    std::string name = cmSystemTools::GetFilenameName(userInterfaces[i]);
+  for (std::string& userInterface : userInterfaces) {
+    std::string name = cmSystemTools::GetFilenameName(userInterface);
     std::string path = this->Directory + "/meta/" + name;
-    cmsys::SystemTools::CopyFileIfDifferent(userInterfaces[i], path);
-    userInterfaces[i] = name;
+    cmsys::SystemTools::CopyFileIfDifferent(userInterface, path);
+    userInterface = name;
   }
   if (!userInterfaces.empty()) {
     xout.StartElement("UserInterfaces");
-    for (size_t i = 0; i < userInterfaces.size(); i++) {
-      xout.Element("UserInterface", userInterfaces[i]);
+    for (std::string const& userInterface : userInterfaces) {
+      xout.Element("UserInterface", userInterface);
     }
     xout.EndElement();
   }
 
   // Translations (copy to meta dir)
   std::vector<std::string> translations = Translations;
-  for (size_t i = 0; i < translations.size(); i++) {
-    std::string name = cmSystemTools::GetFilenameName(translations[i]);
+  for (std::string& translation : translations) {
+    std::string name = cmSystemTools::GetFilenameName(translation);
     std::string path = this->Directory + "/meta/" + name;
-    cmsys::SystemTools::CopyFileIfDifferent(translations[i], path);
-    translations[i] = name;
+    cmsys::SystemTools::CopyFileIfDifferent(translation, path);
+    translation = name;
   }
   if (!translations.empty()) {
     xout.StartElement("Translations");
-    for (size_t i = 0; i < translations.size(); i++) {
-      xout.Element("Translation", translations[i]);
+    for (std::string const& translation : translations) {
+      xout.Element("Translation", translation);
     }
     xout.EndElement();
   }
 
   // Dependencies
   std::set<DependenceStruct> compDepSet;
-  for (std::set<DependenceStruct*>::iterator ait =
-         this->AlienDependencies.begin();
-       ait != this->AlienDependencies.end(); ++ait) {
-    compDepSet.insert(*(*ait));
+  for (DependenceStruct* ad : this->AlienDependencies) {
+    compDepSet.insert(*ad);
   }
-  for (std::set<cmCPackIFWPackage*>::iterator it = this->Dependencies.begin();
-       it != this->Dependencies.end(); ++it) {
-    compDepSet.insert(DependenceStruct((*it)->Name));
+  for (cmCPackIFWPackage* d : this->Dependencies) {
+    compDepSet.insert(DependenceStruct(d->Name));
   }
   // Write dependencies
   if (!compDepSet.empty()) {
@@ -624,10 +632,8 @@ void cmCPackIFWPackage::GeneratePackageFile()
 
   // Automatic dependency on
   std::set<DependenceStruct> compAutoDepSet;
-  for (std::set<DependenceStruct*>::iterator ait =
-         this->AlienAutoDependOn.begin();
-       ait != this->AlienAutoDependOn.end(); ++ait) {
-    compAutoDepSet.insert(*(*ait));
+  for (DependenceStruct* aad : this->AlienAutoDependOn) {
+    compAutoDepSet.insert(*aad);
   }
   // Write automatic dependency on
   if (!compAutoDepSet.empty()) {
@@ -665,6 +671,19 @@ void cmCPackIFWPackage::GeneratePackageFile()
     xout.Element("ForcedInstallation", this->ForcedInstallation);
   }
 
+  // Replaces
+  if (!this->Replaces.empty()) {
+    std::ostringstream replaces;
+    std::vector<std::string>::iterator it = this->Replaces.begin();
+    replaces << *it;
+    ++it;
+    while (it != this->Replaces.end()) {
+      replaces << "," << *it;
+      ++it;
+    }
+    xout.Element("Replaces", replaces.str());
+  }
+
   if (!this->RequiresAdminRights.empty()) {
     xout.Element("RequiresAdminRights", this->RequiresAdminRights);
   }
@@ -685,6 +704,11 @@ void cmCPackIFWPackage::GeneratePackageFile()
     xout.Element("SortingPriority", this->SortingPriority);
   }
 
+  // Checkable
+  if (!this->Checkable.empty()) {
+    xout.Element("Checkable", this->Checkable);
+  }
+
   xout.EndElement();
   xout.EndDocument();
 }
diff --git a/Source/CPack/IFW/cmCPackIFWPackage.h b/Source/CPack/IFW/cmCPackIFWPackage.h
index cec59b03c..ae411462a 100644
--- a/Source/CPack/IFW/cmCPackIFWPackage.h
+++ b/Source/CPack/IFW/cmCPackIFWPackage.h
@@ -114,9 +114,15 @@ public:
   /// Determines that the package must always be installed
   std::string ForcedInstallation;
 
+  /// List of components to replace
+  std::vector<std::string> Replaces;
+
   /// Package needs to be installed with elevated permissions
   std::string RequiresAdminRights;
 
+  /// Set to false if you want to hide the checkbox for an item
+  std::string Checkable;
+
 public:
   // Internal implementation
 
diff --git a/Source/CPack/IFW/cmCPackIFWRepository.cxx b/Source/CPack/IFW/cmCPackIFWRepository.cxx
index b115db057..a01fc4ed3 100644
--- a/Source/CPack/IFW/cmCPackIFWRepository.cxx
+++ b/Source/CPack/IFW/cmCPackIFWRepository.cxx
@@ -62,49 +62,49 @@ bool cmCPackIFWRepository::ConfigureFromOptions()
   if (const char* url = this->GetOption(prefix + "URL")) {
     this->Url = url;
   } else {
-    this->Url = "";
+    this->Url.clear();
   }
 
   // Old url
   if (const char* oldUrl = this->GetOption(prefix + "OLD_URL")) {
     this->OldUrl = oldUrl;
   } else {
-    this->OldUrl = "";
+    this->OldUrl.clear();
   }
 
   // New url
   if (const char* newUrl = this->GetOption(prefix + "NEW_URL")) {
     this->NewUrl = newUrl;
   } else {
-    this->NewUrl = "";
+    this->NewUrl.clear();
   }
 
   // Enabled
   if (this->IsOn(prefix + "DISABLED")) {
     this->Enabled = "0";
   } else {
-    this->Enabled = "";
+    this->Enabled.clear();
   }
 
   // Username
   if (const char* username = this->GetOption(prefix + "USERNAME")) {
     this->Username = username;
   } else {
-    this->Username = "";
+    this->Username.clear();
   }
 
   // Password
   if (const char* password = this->GetOption(prefix + "PASSWORD")) {
     this->Password = password;
   } else {
-    this->Password = "";
+    this->Password.clear();
   }
 
   // DisplayName
   if (const char* displayName = this->GetOption(prefix + "DISPLAY_NAME")) {
     this->DisplayName = displayName;
   } else {
-    this->DisplayName = "";
+    this->DisplayName.clear();
   }
 
   return this->IsValid();
@@ -128,7 +128,7 @@ public:
   bool patched;
 
 protected:
-  void StartElement(const std::string& name, const char** atts) CM_OVERRIDE
+  void StartElement(const std::string& name, const char** atts) override
   {
     this->xout.StartElement(name);
     this->StartFragment(atts);
@@ -143,7 +143,7 @@ protected:
     }
   }
 
-  void EndElement(const std::string& name) CM_OVERRIDE
+  void EndElement(const std::string& name) override
   {
     if (name == "Updates" && !this->patched) {
       this->repository->WriteRepositoryUpdates(this->xout);
@@ -159,10 +159,10 @@ protected:
     }
   }
 
-  void CharacterDataHandler(const char* data, int length) CM_OVERRIDE
+  void CharacterDataHandler(const char* data, int length) override
   {
     std::string content(data, data + length);
-    if (content == "" || content == " " || content == "  " ||
+    if (content.empty() || content == " " || content == "  " ||
         content == "\n") {
       return;
     }
@@ -279,9 +279,8 @@ void cmCPackIFWRepository::WriteRepositoryUpdates(cmXMLWriter& xout)
 {
   if (!this->RepositoryUpdate.empty()) {
     xout.StartElement("RepositoryUpdate");
-    for (RepositoriesVector::iterator rit = this->RepositoryUpdate.begin();
-         rit != this->RepositoryUpdate.end(); ++rit) {
-      (*rit)->WriteRepositoryUpdate(xout);
+    for (cmCPackIFWRepository* r : this->RepositoryUpdate) {
+      r->WriteRepositoryUpdate(xout);
     }
     xout.EndElement();
   }
diff --git a/Source/CPack/OSXScriptLauncher.cxx b/Source/CPack/OSXScriptLauncher.cxx
index b48bf1214..d3de02b47 100644
--- a/Source/CPack/OSXScriptLauncher.cxx
+++ b/Source/CPack/OSXScriptLauncher.cxx
@@ -34,7 +34,7 @@ int main(int argc, char* argv[])
   }
   fileName = CFSTR("RuntimeScript");
   if (!(scriptFileURL =
-          CFBundleCopyResourceURL(appBundle, fileName, NULL, NULL))) {
+          CFBundleCopyResourceURL(appBundle, fileName, nullptr, nullptr))) {
     DebugError("CFBundleCopyResourceURL failed");
     return 1;
   }
@@ -71,7 +71,7 @@ int main(int argc, char* argv[])
   for (cc = 1; cc < argc; ++cc) {
     args.push_back(argv[cc]);
   }
-  args.push_back(0);
+  args.push_back(nullptr);
 
   cmsysProcess* cp = cmsysProcess_New();
   cmsysProcess_SetCommand(cp, &*args.begin());
@@ -83,7 +83,7 @@ int main(int argc, char* argv[])
   std::vector<char> tempOutput;
   char* data;
   int length;
-  while (cmsysProcess_WaitForData(cp, &data, &length, 0)) {
+  while (cmsysProcess_WaitForData(cp, &data, &length, nullptr)) {
     // Translate NULL characters in the output into valid text.
     for (int i = 0; i < length; ++i) {
       if (data[i] == '\0') {
@@ -93,7 +93,7 @@ int main(int argc, char* argv[])
     std::cout.write(data, length);
   }
 
-  cmsysProcess_WaitForExit(cp, 0);
+  cmsysProcess_WaitForExit(cp, nullptr);
 
   bool result = true;
   if (cmsysProcess_GetState(cp) == cmsysProcess_State_Exited) {
diff --git a/Source/CPack/WiX/cmCPackWIXGenerator.cxx b/Source/CPack/WiX/cmCPackWIXGenerator.cxx
index 274dfd0ce..ba07d0863 100644
--- a/Source/CPack/WiX/cmCPackWIXGenerator.cxx
+++ b/Source/CPack/WiX/cmCPackWIXGenerator.cxx
@@ -89,9 +89,8 @@ bool cmCPackWIXGenerator::RunCandleCommand(std::string const& sourceFile,
   command << " -arch " << GetArchitecture();
   command << " -out " << QuotePath(objectFile);
 
-  for (extension_set_t::const_iterator i = CandleExtensions.begin();
-       i != CandleExtensions.end(); ++i) {
-    command << " -ext " << QuotePath(*i);
+  for (std::string const& ext : CandleExtensions) {
+    command << " -ext " << QuotePath(ext);
   }
 
   AddCustomFlags("CPACK_WIX_CANDLE_EXTRA_FLAGS", command);
@@ -113,9 +112,8 @@ bool cmCPackWIXGenerator::RunLightCommand(std::string const& objectFiles)
   command << " -nologo";
   command << " -out " << QuotePath(packageFileNames.at(0));
 
-  for (extension_set_t::const_iterator i = this->LightExtensions.begin();
-       i != this->LightExtensions.end(); ++i) {
-    command << " -ext " << QuotePath(*i);
+  for (std::string const& ext : this->LightExtensions) {
+    command << " -ext " << QuotePath(ext);
   }
 
   const char* const cultures = GetOption("CPACK_WIX_CULTURES");
@@ -219,8 +217,8 @@ bool cmCPackWIXGenerator::InitializeWiXConfiguration()
     std::vector<std::string> patchFilePaths;
     cmSystemTools::ExpandListArgument(patchFilePath, patchFilePaths);
 
-    for (size_t i = 0; i < patchFilePaths.size(); ++i) {
-      if (!this->Patch->LoadFragments(patchFilePaths[i])) {
+    for (std::string const& p : patchFilePaths) {
+      if (!this->Patch->LoadFragments(p)) {
         return false;
       }
     }
@@ -254,9 +252,7 @@ bool cmCPackWIXGenerator::PackageFilesImpl()
   std::set<std::string> usedBaseNames;
 
   std::ostringstream objectFiles;
-  for (size_t i = 0; i < this->WixSources.size(); ++i) {
-    std::string const& sourceFilename = this->WixSources[i];
-
+  for (std::string const& sourceFilename : this->WixSources) {
     std::string baseName =
       cmSystemTools::GetFilenameWithoutLastExtension(sourceFilename);
 
@@ -306,8 +302,8 @@ void cmCPackWIXGenerator::AppendUserSuppliedExtraObjects(std::ostream& stream)
   cmSystemTools::ExpandListArgument(cpackWixExtraObjects,
                                     expandedExtraObjects);
 
-  for (size_t i = 0; i < expandedExtraObjects.size(); ++i) {
-    stream << " " << QuotePath(expandedExtraObjects[i]);
+  for (std::string const& obj : expandedExtraObjects) {
+    stream << " " << QuotePath(obj);
   }
 }
 
@@ -345,9 +341,7 @@ void cmCPackWIXGenerator::CreateWiXPropertiesIncludeFile()
   std::string prefix = "CPACK_WIX_PROPERTY_";
   std::vector<std::string> options = GetOptions();
 
-  for (size_t i = 0; i < options.size(); ++i) {
-    std::string const& name = options[i];
-
+  for (std::string const& name : options) {
     if (name.length() > prefix.length() &&
         name.substr(0, prefix.length()) == prefix) {
       std::string id = name.substr(prefix.length());
@@ -503,16 +497,14 @@ bool cmCPackWIXGenerator::CreateWiXSourceFiles()
 
     globalShortcuts.AddShortcutTypes(emittedShortcutTypes);
   } else {
-    for (std::map<std::string, cmCPackComponent>::const_iterator i =
-           this->Components.begin();
-         i != this->Components.end(); ++i) {
-      cmCPackComponent const& component = i->second;
+    for (auto const& i : this->Components) {
+      cmCPackComponent const& component = i.second;
 
       std::string componentPath = toplevel;
       componentPath += "/";
       componentPath += component.Name;
 
-      std::string componentFeatureId = "CM_C_" + component.Name;
+      std::string const componentFeatureId = "CM_C_" + component.Name;
 
       cmWIXShortcuts featureShortcuts;
       AddComponentsToFeature(componentPath, componentFeatureId,
@@ -623,19 +615,15 @@ bool cmCPackWIXGenerator::GenerateMainSourceFileFromTemplate()
 bool cmCPackWIXGenerator::CreateFeatureHierarchy(
   cmWIXFeaturesSourceWriter& featureDefinitions)
 {
-  for (std::map<std::string, cmCPackComponentGroup>::const_iterator i =
-         ComponentGroups.begin();
-       i != ComponentGroups.end(); ++i) {
-    cmCPackComponentGroup const& group = i->second;
+  for (auto const& i : ComponentGroups) {
+    cmCPackComponentGroup const& group = i.second;
     if (group.ParentGroup == 0) {
       featureDefinitions.EmitFeatureForComponentGroup(group, *this->Patch);
     }
   }
 
-  for (std::map<std::string, cmCPackComponent>::const_iterator i =
-         this->Components.begin();
-       i != this->Components.end(); ++i) {
-    cmCPackComponent const& component = i->second;
+  for (auto const& i : this->Components) {
+    cmCPackComponent const& component = i.second;
 
     if (!component.Group) {
       featureDefinitions.EmitFeatureForComponent(component, *this->Patch);
@@ -1135,9 +1123,8 @@ void cmCPackWIXGenerator::AddCustomFlags(std::string const& variableName,
   std::vector<std::string> list;
   cmSystemTools::ExpandListArgument(variableContent, list);
 
-  for (std::vector<std::string>::const_iterator i = list.begin();
-       i != list.end(); ++i) {
-    stream << " " << QuotePath(*i);
+  for (std::string const& i : list) {
+    stream << " " << QuotePath(i);
   }
 }
 
diff --git a/Source/CPack/WiX/cmWIXAccessControlList.cxx b/Source/CPack/WiX/cmWIXAccessControlList.cxx
index 744a93298..1603bf868 100644
--- a/Source/CPack/WiX/cmWIXAccessControlList.cxx
+++ b/Source/CPack/WiX/cmWIXAccessControlList.cxx
@@ -20,8 +20,8 @@ bool cmWIXAccessControlList::Apply()
   std::vector<std::string> entries;
   this->InstalledFile.GetPropertyAsList("CPACK_WIX_ACL", entries);
 
-  for (size_t i = 0; i < entries.size(); ++i) {
-    this->CreatePermissionElement(entries[i]);
+  for (std::string const& entry : entries) {
+    this->CreatePermissionElement(entry);
   }
 
   return true;
@@ -56,9 +56,9 @@ void cmWIXAccessControlList::CreatePermissionElement(std::string const& entry)
   if (!domain.empty()) {
     this->SourceWriter.AddAttribute("Domain", domain);
   }
-  for (size_t i = 0; i < permissions.size(); ++i) {
+  for (std::string const& permission : permissions) {
     this->EmitBooleanAttribute(entry,
-                               cmSystemTools::TrimWhitespace(permissions[i]));
+                               cmSystemTools::TrimWhitespace(permission));
   }
   this->SourceWriter.EndElement("Permission");
 }
diff --git a/Source/CPack/WiX/cmWIXFeaturesSourceWriter.cxx b/Source/CPack/WiX/cmWIXFeaturesSourceWriter.cxx
index 0be43776e..a7a064881 100644
--- a/Source/CPack/WiX/cmWIXFeaturesSourceWriter.cxx
+++ b/Source/CPack/WiX/cmWIXFeaturesSourceWriter.cxx
@@ -46,16 +46,12 @@ void cmWIXFeaturesSourceWriter::EmitFeatureForComponentGroup(
 
   patch.ApplyFragment("CM_G_" + group.Name, *this);
 
-  for (std::vector<cmCPackComponentGroup*>::const_iterator i =
-         group.Subgroups.begin();
-       i != group.Subgroups.end(); ++i) {
-    EmitFeatureForComponentGroup(**i, patch);
+  for (cmCPackComponentGroup* subgroup : group.Subgroups) {
+    EmitFeatureForComponentGroup(*subgroup, patch);
   }
 
-  for (std::vector<cmCPackComponent*>::const_iterator i =
-         group.Components.begin();
-       i != group.Components.end(); ++i) {
-    EmitFeatureForComponent(**i, patch);
+  for (cmCPackComponent* component : group.Components) {
+    EmitFeatureForComponent(*component, patch);
   }
 
   EndElement("Feature");
diff --git a/Source/CPack/WiX/cmWIXPatch.cxx b/Source/CPack/WiX/cmWIXPatch.cxx
index 287a644bb..dec95fb6e 100644
--- a/Source/CPack/WiX/cmWIXPatch.cxx
+++ b/Source/CPack/WiX/cmWIXPatch.cxx
@@ -29,10 +29,8 @@ void cmWIXPatch::ApplyFragment(std::string const& id,
     return;
 
   const cmWIXPatchElement& fragment = i->second;
-  for (cmWIXPatchElement::attributes_t::const_iterator attr_i =
-         fragment.attributes.begin();
-       attr_i != fragment.attributes.end(); ++attr_i) {
-    writer.AddAttribute(attr_i->first, attr_i->second);
+  for (auto const& attr : fragment.attributes) {
+    writer.AddAttribute(attr.first, attr.second);
   }
   this->ApplyElementChildren(fragment, writer);
 
@@ -42,11 +40,7 @@ void cmWIXPatch::ApplyFragment(std::string const& id,
 void cmWIXPatch::ApplyElementChildren(const cmWIXPatchElement& element,
                                       cmWIXSourceWriter& writer)
 {
-  for (cmWIXPatchElement::child_list_t::const_iterator j =
-         element.children.begin();
-       j != element.children.end(); ++j) {
-    cmWIXPatchNode* node = *j;
-
+  for (cmWIXPatchNode* node : element.children) {
     switch (node->type()) {
       case cmWIXPatchNode::ELEMENT:
         ApplyElement(dynamic_cast<const cmWIXPatchElement&>(*node), writer);
@@ -63,10 +57,8 @@ void cmWIXPatch::ApplyElement(const cmWIXPatchElement& element,
 {
   writer.BeginElement(element.name);
 
-  for (cmWIXPatchElement::attributes_t::const_iterator i =
-         element.attributes.begin();
-       i != element.attributes.end(); ++i) {
-    writer.AddAttribute(i->first, i->second);
+  for (auto const& attr : element.attributes) {
+    writer.AddAttribute(attr.first, attr.second);
   }
 
   this->ApplyElementChildren(element, writer);
@@ -77,14 +69,13 @@ void cmWIXPatch::ApplyElement(const cmWIXPatchElement& element,
 bool cmWIXPatch::CheckForUnappliedFragments()
 {
   std::string fragmentList;
-  for (cmWIXPatchParser::fragment_map_t::const_iterator i = Fragments.begin();
-       i != Fragments.end(); ++i) {
+  for (auto const& fragment : Fragments) {
     if (!fragmentList.empty()) {
       fragmentList += ", ";
     }
 
     fragmentList += "'";
-    fragmentList += i->first;
+    fragmentList += fragment.first;
     fragmentList += "'";
   }
 
diff --git a/Source/CPack/WiX/cmWIXPatchParser.cxx b/Source/CPack/WiX/cmWIXPatchParser.cxx
index 0dcc74ae0..e6aeed325 100644
--- a/Source/CPack/WiX/cmWIXPatchParser.cxx
+++ b/Source/CPack/WiX/cmWIXPatchParser.cxx
@@ -22,8 +22,8 @@ cmWIXPatchNode::~cmWIXPatchNode()
 
 cmWIXPatchElement::~cmWIXPatchElement()
 {
-  for (child_list_t::iterator i = children.begin(); i != children.end(); ++i) {
-    delete *i;
+  for (cmWIXPatchNode* child : children) {
+    delete child;
   }
 }
 
@@ -72,7 +72,7 @@ void cmWIXPatchParser::StartElement(const std::string& name, const char** atts)
 
 void cmWIXPatchParser::StartFragment(const char** attributes)
 {
-  cmWIXPatchElement* new_element = CM_NULLPTR;
+  cmWIXPatchElement* new_element = nullptr;
   /* find the id of for fragment */
   for (size_t i = 0; attributes[i]; i += 2) {
     const std::string key = attributes[i];
diff --git a/Source/CPack/WiX/cmWIXRichTextFormatWriter.h b/Source/CPack/WiX/cmWIXRichTextFormatWriter.h
index 30df87814..21be8ee66 100644
--- a/Source/CPack/WiX/cmWIXRichTextFormatWriter.h
+++ b/Source/CPack/WiX/cmWIXRichTextFormatWriter.h
@@ -3,7 +3,7 @@
 #ifndef cmWIXRichTextFormatWriter_h
 #define cmWIXRichTextFormatWriter_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmsys/FStream.hxx"
 #include <string>
diff --git a/Source/CPack/WiX/cmWIXShortcut.cxx b/Source/CPack/WiX/cmWIXShortcut.cxx
index e5dea94c4..cd1988a1c 100644
--- a/Source/CPack/WiX/cmWIXShortcut.cxx
+++ b/Source/CPack/WiX/cmWIXShortcut.cxx
@@ -47,10 +47,9 @@ bool cmWIXShortcuts::EmitShortcuts(
       return false;
   }
 
-  for (shortcut_id_map_t::const_iterator j = id_map.begin(); j != id_map.end();
-       ++j) {
-    std::string const& id = j->first;
-    shortcut_list_t const& shortcutList = j->second;
+  for (auto const& j : id_map) {
+    std::string const& id = j.first;
+    shortcut_list_t const& shortcutList = j.second;
 
     for (size_t shortcutListIndex = 0; shortcutListIndex < shortcutList.size();
          ++shortcutListIndex) {
@@ -68,9 +67,8 @@ bool cmWIXShortcuts::EmitShortcuts(
 
 void cmWIXShortcuts::AddShortcutTypes(std::set<Type>& types)
 {
-  for (shortcut_type_map_t::const_iterator i = this->Shortcuts.begin();
-       i != this->Shortcuts.end(); ++i) {
-    types.insert(i->first);
+  for (auto const& shortcut : this->Shortcuts) {
+    types.insert(shortcut.first);
   }
 }
 
@@ -96,9 +94,9 @@ void cmWIXShortcuts::CreateFromProperty(std::string const& propertyName,
   std::vector<std::string> list;
   installedFile.GetPropertyAsList(propertyName, list);
 
-  for (size_t i = 0; i < list.size(); ++i) {
+  for (std::string const& label : list) {
     cmWIXShortcut shortcut;
-    shortcut.label = list[i];
+    shortcut.label = label;
     shortcut.workingDirectoryId = directoryId;
     insert(type, id, shortcut);
   }
diff --git a/Source/CPack/WiX/cmWIXSourceWriter.cxx b/Source/CPack/WiX/cmWIXSourceWriter.cxx
index a86e28d1c..dc730e00c 100644
--- a/Source/CPack/WiX/cmWIXSourceWriter.cxx
+++ b/Source/CPack/WiX/cmWIXSourceWriter.cxx
@@ -158,9 +158,7 @@ std::string cmWIXSourceWriter::EscapeAttributeValue(std::string const& value)
   std::string result;
   result.reserve(value.size());
 
-  char c = 0;
-  for (size_t i = 0; i < value.size(); ++i) {
-    c = value[i];
+  for (char c : value) {
     switch (c) {
       case '<':
         result += "&lt;";
diff --git a/Source/CPack/cmCPack7zGenerator.h b/Source/CPack/cmCPack7zGenerator.h
index 42a47810c..8af4c4a4d 100644
--- a/Source/CPack/cmCPack7zGenerator.h
+++ b/Source/CPack/cmCPack7zGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPack7zGenerator_h
 #define cmCPack7zGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCPackArchiveGenerator.h"
 #include "cmCPackGenerator.h"
@@ -20,10 +20,10 @@ public:
    * Construct generator
    */
   cmCPack7zGenerator();
-  ~cmCPack7zGenerator() CM_OVERRIDE;
+  ~cmCPack7zGenerator() override;
 
 protected:
-  const char* GetOutputExtension() CM_OVERRIDE { return ".7z"; }
+  const char* GetOutputExtension() override { return ".7z"; }
 };
 
 #endif
diff --git a/Source/CPack/cmCPackArchiveGenerator.cxx b/Source/CPack/cmCPackArchiveGenerator.cxx
index 575c94924..641be3861 100644
--- a/Source/CPack/cmCPackArchiveGenerator.cxx
+++ b/Source/CPack/cmCPackArchiveGenerator.cxx
@@ -9,7 +9,6 @@
 #include "cmSystemTools.h"
 #include "cmWorkingDirectory.h"
 
-#include <map>
 #include <ostream>
 #include <utility>
 #include <vector>
@@ -74,12 +73,10 @@ int cmCPackArchiveGenerator::addOneComponentToArchive(
     filePrefix += installPrefix + 1;
     filePrefix += "/";
   }
-  std::vector<std::string>::const_iterator fileIt;
-  for (fileIt = component->Files.begin(); fileIt != component->Files.end();
-       ++fileIt) {
-    std::string rp = filePrefix + *fileIt;
+  for (std::string const& file : component->Files) {
+    std::string rp = filePrefix + file;
     cmCPackLogger(cmCPackLog::LOG_DEBUG, "Adding file: " << rp << std::endl);
-    archive.Add(rp, 0, CM_NULLPTR, false);
+    archive.Add(rp, 0, nullptr, false);
     if (!archive) {
       cmCPackLogger(cmCPackLog::LOG_ERROR, "ERROR while packaging files: "
                       << archive.GetError() << std::endl);
@@ -117,53 +114,47 @@ int cmCPackArchiveGenerator::PackageComponents(bool ignoreGroup)
   // The default behavior is to have one package by component group
   // unless CPACK_COMPONENTS_IGNORE_GROUP is specified.
   if (!ignoreGroup) {
-    std::map<std::string, cmCPackComponentGroup>::iterator compGIt;
-    for (compGIt = this->ComponentGroups.begin();
-         compGIt != this->ComponentGroups.end(); ++compGIt) {
-      cmCPackLogger(cmCPackLog::LOG_VERBOSE, "Packaging component group: "
-                      << compGIt->first << std::endl);
+    for (auto const& compG : this->ComponentGroups) {
+      cmCPackLogger(cmCPackLog::LOG_VERBOSE,
+                    "Packaging component group: " << compG.first << std::endl);
       // Begin the archive for this group
       std::string packageFileName = std::string(toplevel) + "/" +
-        this->GetArchiveComponentFileName(compGIt->first, true);
+        this->GetArchiveComponentFileName(compG.first, true);
 
       // open a block in order to automatically close archive
       // at the end of the block
       {
         DECLARE_AND_OPEN_ARCHIVE(packageFileName, archive);
         // now iterate over the component of this group
-        std::vector<cmCPackComponent*>::iterator compIt;
-        for (compIt = (compGIt->second).Components.begin();
-             compIt != (compGIt->second).Components.end(); ++compIt) {
+        for (cmCPackComponent* comp : (compG.second).Components) {
           // Add the files of this component to the archive
-          addOneComponentToArchive(archive, *compIt);
+          addOneComponentToArchive(archive, comp);
         }
       }
       // add the generated package to package file names list
       packageFileNames.push_back(packageFileName);
     }
     // Handle Orphan components (components not belonging to any groups)
-    std::map<std::string, cmCPackComponent>::iterator compIt;
-    for (compIt = this->Components.begin(); compIt != this->Components.end();
-         ++compIt) {
+    for (auto& comp : this->Components) {
       // Does the component belong to a group?
-      if (compIt->second.Group == CM_NULLPTR) {
+      if (comp.second.Group == nullptr) {
         cmCPackLogger(
           cmCPackLog::LOG_VERBOSE, "Component <"
-            << compIt->second.Name
+            << comp.second.Name
             << "> does not belong to any group, package it separately."
             << std::endl);
         std::string localToplevel(
           this->GetOption("CPACK_TEMPORARY_DIRECTORY"));
         std::string packageFileName = std::string(toplevel);
 
-        localToplevel += "/" + compIt->first;
+        localToplevel += "/" + comp.first;
         packageFileName +=
-          "/" + this->GetArchiveComponentFileName(compIt->first, false);
+          "/" + this->GetArchiveComponentFileName(comp.first, false);
 
         {
           DECLARE_AND_OPEN_ARCHIVE(packageFileName, archive);
           // Add the files of this component to the archive
-          addOneComponentToArchive(archive, &(compIt->second));
+          addOneComponentToArchive(archive, &(comp.second));
         }
         // add the generated package to package file names list
         packageFileNames.push_back(packageFileName);
@@ -173,20 +164,18 @@ int cmCPackArchiveGenerator::PackageComponents(bool ignoreGroup)
   // CPACK_COMPONENTS_IGNORE_GROUPS is set
   // We build 1 package per component
   else {
-    std::map<std::string, cmCPackComponent>::iterator compIt;
-    for (compIt = this->Components.begin(); compIt != this->Components.end();
-         ++compIt) {
+    for (auto& comp : this->Components) {
       std::string localToplevel(this->GetOption("CPACK_TEMPORARY_DIRECTORY"));
       std::string packageFileName = std::string(toplevel);
 
-      localToplevel += "/" + compIt->first;
+      localToplevel += "/" + comp.first;
       packageFileName +=
-        "/" + this->GetArchiveComponentFileName(compIt->first, false);
+        "/" + this->GetArchiveComponentFileName(comp.first, false);
 
       {
         DECLARE_AND_OPEN_ARCHIVE(packageFileName, archive);
         // Add the files of this component to the archive
-        addOneComponentToArchive(archive, &(compIt->second));
+        addOneComponentToArchive(archive, &(comp.second));
       }
       // add the generated package to package file names list
       packageFileNames.push_back(packageFileName);
@@ -217,11 +206,9 @@ int cmCPackArchiveGenerator::PackageComponentsAllInOne()
   DECLARE_AND_OPEN_ARCHIVE(packageFileNames[0], archive);
 
   // The ALL COMPONENTS in ONE package case
-  std::map<std::string, cmCPackComponent>::iterator compIt;
-  for (compIt = this->Components.begin(); compIt != this->Components.end();
-       ++compIt) {
+  for (auto& comp : this->Components) {
     // Add the files of this component to the archive
-    addOneComponentToArchive(archive, &(compIt->second));
+    addOneComponentToArchive(archive, &(comp.second));
   }
 
   // archive goes out of scope so it will finalized and closed.
@@ -249,16 +236,15 @@ int cmCPackArchiveGenerator::PackageFiles()
 
   // CASE 3 : NON COMPONENT package.
   DECLARE_AND_OPEN_ARCHIVE(packageFileNames[0], archive);
-  std::vector<std::string>::const_iterator fileIt;
   cmWorkingDirectory workdir(toplevel);
-  for (fileIt = files.begin(); fileIt != files.end(); ++fileIt) {
+  for (std::string const& file : files) {
     // Get the relative path to the file
     std::string rp =
-      cmSystemTools::RelativePath(toplevel.c_str(), fileIt->c_str());
-    archive.Add(rp, 0, CM_NULLPTR, false);
+      cmSystemTools::RelativePath(toplevel.c_str(), file.c_str());
+    archive.Add(rp, 0, nullptr, false);
     if (!archive) {
       cmCPackLogger(cmCPackLog::LOG_ERROR, "Problem while adding file< "
-                      << *fileIt << "> to archive <" << packageFileNames[0]
+                      << file << "> to archive <" << packageFileNames[0]
                       << "> .ERROR =" << archive.GetError() << std::endl);
       return 0;
     }
diff --git a/Source/CPack/cmCPackArchiveGenerator.h b/Source/CPack/cmCPackArchiveGenerator.h
index e7116c466..998385432 100644
--- a/Source/CPack/cmCPackArchiveGenerator.h
+++ b/Source/CPack/cmCPackArchiveGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackArchiveGenerator_h
 #define cmCPackArchiveGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmArchiveWrite.h"
 #include "cmCPackGenerator.h"
@@ -28,11 +28,11 @@ public:
    * Construct generator
    */
   cmCPackArchiveGenerator(cmArchiveWrite::Compress, std::string const& format);
-  ~cmCPackArchiveGenerator() CM_OVERRIDE;
+  ~cmCPackArchiveGenerator() override;
   // Used to add a header to the archive
   virtual int GenerateHeader(std::ostream* os);
   // component support
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  bool SupportsComponentInstallation() const override;
 
 private:
   // get archive component filename
@@ -40,7 +40,7 @@ private:
                                           bool isGroupName);
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
+  int InitializeInternal() override;
   /**
    * Add the files belonging to the specified component
    * to the provided (already opened) archive.
@@ -56,7 +56,7 @@ protected:
    * method will call either PackageComponents or
    * PackageComponentsAllInOne.
    */
-  int PackageFiles() CM_OVERRIDE;
+  int PackageFiles() override;
   /**
    * The method used to package files when component
    * install is used. This will create one
@@ -68,7 +68,7 @@ protected:
    * components will be put in a single installer.
    */
   int PackageComponentsAllInOne();
-  const char* GetOutputExtension() CM_OVERRIDE = 0;
+  const char* GetOutputExtension() override = 0;
   cmArchiveWrite::Compress Compress;
   std::string ArchiveFormat;
 };
diff --git a/Source/CPack/cmCPackBundleGenerator.cxx b/Source/CPack/cmCPackBundleGenerator.cxx
index d5389014a..f47ca7a74 100644
--- a/Source/CPack/cmCPackBundleGenerator.cxx
+++ b/Source/CPack/cmCPackBundleGenerator.cxx
@@ -19,7 +19,7 @@ cmCPackBundleGenerator::~cmCPackBundleGenerator()
 int cmCPackBundleGenerator::InitializeInternal()
 {
   const char* name = this->GetOption("CPACK_BUNDLE_NAME");
-  if (0 == name) {
+  if (nullptr == name) {
     cmCPackLogger(cmCPackLog::LOG_ERROR,
                   "CPACK_BUNDLE_NAME must be set to use the Bundle generator."
                     << std::endl);
@@ -213,8 +213,7 @@ int cmCPackBundleGenerator::SignBundle(const std::string& src_dir)
     cmSystemTools::ExpandListArgument(sign_files, relFiles);
 
     // sign the files supplied by the user, ie. frameworks.
-    for (std::vector<std::string>::iterator it = relFiles.begin();
-         it != relFiles.end(); ++it) {
+    for (auto const& file : relFiles) {
       std::ostringstream temp_sign_file_cmd;
       temp_sign_file_cmd << this->GetOption("CPACK_COMMAND_CODESIGN");
       temp_sign_file_cmd << " " << sign_parameter << " -s \""
@@ -223,11 +222,11 @@ int cmCPackBundleGenerator::SignBundle(const std::string& src_dir)
       temp_sign_file_cmd << this->GetOption("CPACK_APPLE_BUNDLE_ID");
       temp_sign_file_cmd << " \"";
       temp_sign_file_cmd << bundle_path;
-      temp_sign_file_cmd << *it << "\"";
+      temp_sign_file_cmd << file << "\"";
 
       if (!this->RunCommand(temp_sign_file_cmd, &output)) {
         cmCPackLogger(cmCPackLog::LOG_ERROR,
-                      "Error signing file:" << bundle_path << *it << std::endl
+                      "Error signing file:" << bundle_path << file << std::endl
                                             << output << std::endl);
 
         return 0;
diff --git a/Source/CPack/cmCPackBundleGenerator.h b/Source/CPack/cmCPackBundleGenerator.h
index 861fe4b09..27bac3a5a 100644
--- a/Source/CPack/cmCPackBundleGenerator.h
+++ b/Source/CPack/cmCPackBundleGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackBundleGenerator_h
 #define cmCPackBundleGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
@@ -21,15 +21,15 @@ public:
   cmCPackTypeMacro(cmCPackBundleGenerator, cmCPackDragNDropGenerator);
 
   cmCPackBundleGenerator();
-  virtual ~cmCPackBundleGenerator();
+  ~cmCPackBundleGenerator() override;
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
-  const char* GetPackagingInstallPrefix() CM_OVERRIDE;
+  int InitializeInternal() override;
+  const char* GetPackagingInstallPrefix() override;
   int ConstructBundle();
   int SignBundle(const std::string& src_dir);
-  int PackageFiles() CM_OVERRIDE;
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  int PackageFiles() override;
+  bool SupportsComponentInstallation() const override;
 
   std::string InstallPrefix;
 };
diff --git a/Source/CPack/cmCPackComponentGroup.cxx b/Source/CPack/cmCPackComponentGroup.cxx
index e39398ad5..f888a5f5d 100644
--- a/Source/CPack/cmCPackComponentGroup.cxx
+++ b/Source/CPack/cmCPackComponentGroup.cxx
@@ -5,7 +5,6 @@
 #include "cmSystemTools.h"
 
 #include <string>
-#include <vector>
 
 unsigned long cmCPackComponent::GetInstalledSize(
   const std::string& installDir) const
@@ -14,11 +13,10 @@ unsigned long cmCPackComponent::GetInstalledSize(
     return this->TotalSize;
   }
 
-  std::vector<std::string>::const_iterator fileIt;
-  for (fileIt = this->Files.begin(); fileIt != this->Files.end(); ++fileIt) {
+  for (std::string const& file : this->Files) {
     std::string path = installDir;
     path += '/';
-    path += *fileIt;
+    path += file;
     this->TotalSize += cmSystemTools::FileLength(path);
   }
 
diff --git a/Source/CPack/cmCPackComponentGroup.h b/Source/CPack/cmCPackComponentGroup.h
index 26d69ba68..f2907db20 100644
--- a/Source/CPack/cmCPackComponentGroup.h
+++ b/Source/CPack/cmCPackComponentGroup.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackComponentGroup_h
 #define cmCPackComponentGroup_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -36,7 +36,7 @@ class cmCPackComponent
 {
 public:
   cmCPackComponent()
-    : Group(CM_NULLPTR)
+    : Group(nullptr)
     , IsRequired(true)
     , IsHidden(false)
     , IsDisabledByDefault(false)
@@ -114,7 +114,7 @@ class cmCPackComponentGroup
 {
 public:
   cmCPackComponentGroup()
-    : ParentGroup(CM_NULLPTR)
+    : ParentGroup(nullptr)
   {
   }
 
diff --git a/Source/CPack/cmCPackCygwinBinaryGenerator.h b/Source/CPack/cmCPackCygwinBinaryGenerator.h
index 58e80bda7..f87a1343b 100644
--- a/Source/CPack/cmCPackCygwinBinaryGenerator.h
+++ b/Source/CPack/cmCPackCygwinBinaryGenerator.h
@@ -17,7 +17,7 @@ public:
    * Construct generator
    */
   cmCPackCygwinBinaryGenerator();
-  virtual ~cmCPackCygwinBinaryGenerator();
+  ~cmCPackCygwinBinaryGenerator() override;
 
 protected:
   virtual int InitializeInternal();
diff --git a/Source/CPack/cmCPackCygwinSourceGenerator.h b/Source/CPack/cmCPackCygwinSourceGenerator.h
index 896de1d3e..a909b1595 100644
--- a/Source/CPack/cmCPackCygwinSourceGenerator.h
+++ b/Source/CPack/cmCPackCygwinSourceGenerator.h
@@ -17,7 +17,7 @@ public:
    * Construct generator
    */
   cmCPackCygwinSourceGenerator();
-  virtual ~cmCPackCygwinSourceGenerator();
+  ~cmCPackCygwinSourceGenerator() override;
 
 protected:
   const char* GetPackagingInstallPrefix();
diff --git a/Source/CPack/cmCPackDebGenerator.cxx b/Source/CPack/cmCPackDebGenerator.cxx
index af54fce33..7fc3c26de 100644
--- a/Source/CPack/cmCPackDebGenerator.cxx
+++ b/Source/CPack/cmCPackDebGenerator.cxx
@@ -6,28 +6,17 @@
 #include "cmCPackComponentGroup.h"
 #include "cmCPackGenerator.h"
 #include "cmCPackLog.h"
+#include "cmCryptoHash.h"
 #include "cmGeneratedFileStream.h"
 #include "cmSystemTools.h"
 #include "cm_sys_stat.h"
 
 #include "cmsys/Glob.hxx"
-#include <limits.h>
-#include <map>
 #include <ostream>
 #include <set>
-#include <stdio.h>
 #include <string.h>
 #include <utility>
 
-// NOTE:
-// A debian package .deb is simply an 'ar' archive. The only subtle difference
-// is that debian uses the BSD ar style archive whereas most Linux distro have
-// a GNU ar.
-// See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=161593 for more info
-// Therefore we provide our own implementation of a BSD-ar:
-static int ar_append(const char* archive,
-                     const std::vector<std::string>& files);
-
 cmCPackDebGenerator::cmCPackDebGenerator()
 {
 }
@@ -115,37 +104,31 @@ int cmCPackDebGenerator::PackageComponents(bool ignoreGroup)
   // The default behavior is to have one package by component group
   // unless CPACK_COMPONENTS_IGNORE_GROUP is specified.
   if (!ignoreGroup) {
-    std::map<std::string, cmCPackComponentGroup>::iterator compGIt;
-    for (compGIt = this->ComponentGroups.begin();
-         compGIt != this->ComponentGroups.end(); ++compGIt) {
-      cmCPackLogger(cmCPackLog::LOG_VERBOSE, "Packaging component group: "
-                      << compGIt->first << std::endl);
+    for (auto const& compG : this->ComponentGroups) {
+      cmCPackLogger(cmCPackLog::LOG_VERBOSE,
+                    "Packaging component group: " << compG.first << std::endl);
       // Begin the archive for this group
-      retval &= PackageOnePack(initialTopLevel, compGIt->first);
+      retval &= PackageOnePack(initialTopLevel, compG.first);
     }
     // Handle Orphan components (components not belonging to any groups)
-    std::map<std::string, cmCPackComponent>::iterator compIt;
-    for (compIt = this->Components.begin(); compIt != this->Components.end();
-         ++compIt) {
+    for (auto const& comp : this->Components) {
       // Does the component belong to a group?
-      if (compIt->second.Group == CM_NULLPTR) {
+      if (comp.second.Group == nullptr) {
         cmCPackLogger(
           cmCPackLog::LOG_VERBOSE, "Component <"
-            << compIt->second.Name
+            << comp.second.Name
             << "> does not belong to any group, package it separately."
             << std::endl);
         // Begin the archive for this orphan component
-        retval &= PackageOnePack(initialTopLevel, compIt->first);
+        retval &= PackageOnePack(initialTopLevel, comp.first);
       }
     }
   }
   // CPACK_COMPONENTS_IGNORE_GROUPS is set
   // We build 1 package per component
   else {
-    std::map<std::string, cmCPackComponent>::iterator compIt;
-    for (compIt = this->Components.begin(); compIt != this->Components.end();
-         ++compIt) {
-      retval &= PackageOnePack(initialTopLevel, compIt->first);
+    for (auto const& comp : this->Components) {
+      retval &= PackageOnePack(initialTopLevel, comp.first);
     }
   }
   return retval;
@@ -346,10 +329,8 @@ int cmCPackDebGenerator::createDeb()
     {
       std::string dirName = this->GetOption("CPACK_TEMPORARY_DIRECTORY");
       dirName += '/';
-      for (std::vector<std::string>::const_iterator fileIt =
-             packageFiles.begin();
-           fileIt != packageFiles.end(); ++fileIt) {
-        totalSize += cmSystemTools::FileLength(*fileIt);
+      for (std::string const& file : packageFiles) {
+        totalSize += cmSystemTools::FileLength(file);
       }
     }
     out << "Installed-Size: " << (totalSize + 1023) / 1024 << "\n";
@@ -410,7 +391,7 @@ int cmCPackDebGenerator::createDeb()
     compression_suffix = ".gz";
     tar_compression_type = cmArchiveWrite::CompressGZip;
   } else if (!strcmp(debian_compression_type, "none")) {
-    compression_suffix = "";
+    compression_suffix.clear();
     tar_compression_type = cmArchiveWrite::CompressNone;
   } else {
     cmCPackLogger(cmCPackLog::LOG_ERROR,
@@ -456,10 +437,7 @@ int cmCPackDebGenerator::createDeb()
 
     // we have to reconstruct the parent folders as well
 
-    for (std::vector<std::string>::const_iterator fileIt =
-           packageFiles.begin();
-         fileIt != packageFiles.end(); ++fileIt) {
-      std::string currentPath = *fileIt;
+    for (std::string currentPath : packageFiles) {
       while (currentPath != strGenWDIR) {
         // the last one IS strGenWDIR, but we do not want this one:
         // XXX/application/usr/bin/myprogram with GEN_WDIR=XXX/application
@@ -469,22 +447,40 @@ int cmCPackDebGenerator::createDeb()
       }
     }
 
-    for (std::set<std::string>::const_iterator fileIt = orderedFiles.begin();
-         fileIt != orderedFiles.end(); ++fileIt) {
-      cmCPackLogger(cmCPackLog::LOG_DEBUG, "FILEIT: \"" << *fileIt << "\""
+    for (std::string const& file : orderedFiles) {
+      cmCPackLogger(cmCPackLog::LOG_DEBUG, "FILEIT: \"" << file << "\""
                                                         << std::endl);
-      std::string::size_type slashPos = fileIt->find('/', topLevelLength + 1);
+      std::string::size_type slashPos = file.find('/', topLevelLength + 1);
       std::string relativeDir =
-        fileIt->substr(topLevelLength, slashPos - topLevelLength);
+        file.substr(topLevelLength, slashPos - topLevelLength);
       cmCPackLogger(cmCPackLog::LOG_DEBUG, "RELATIVEDIR: \""
                       << relativeDir << "\"" << std::endl);
 
+#ifdef WIN32
+      std::string mode_t_adt_filename = file + ":cmake_mode_t";
+      cmsys::ifstream permissionStream(mode_t_adt_filename.c_str());
+
+      mode_t permissions = 0;
+
+      if (permissionStream) {
+        permissionStream >> std::oct >> permissions;
+      }
+
+      if (permissions != 0) {
+        data_tar.SetPermissions(permissions);
+      } else if (cmSystemTools::FileIsDirectory(file)) {
+        data_tar.SetPermissions(0755);
+      } else {
+        data_tar.ClearPermissions();
+      }
+#endif
+
       // do not recurse because the loop will do it
-      if (!data_tar.Add(*fileIt, topLevelLength, ".", false)) {
+      if (!data_tar.Add(file, topLevelLength, ".", false)) {
         cmCPackLogger(cmCPackLog::LOG_ERROR, "Problem adding file to tar:"
                         << std::endl
                         << "#top level directory: " << strGenWDIR << std::endl
-                        << "#file: " << *fileIt << std::endl
+                        << "#file: " << file << std::endl
                         << "#error:" << data_tar.GetError() << std::endl);
         return 0;
       }
@@ -499,25 +495,21 @@ int cmCPackDebGenerator::createDeb()
     std::string topLevelWithTrailingSlash =
       this->GetOption("CPACK_TEMPORARY_DIRECTORY");
     topLevelWithTrailingSlash += '/';
-    for (std::vector<std::string>::const_iterator fileIt =
-           packageFiles.begin();
-         fileIt != packageFiles.end(); ++fileIt) {
+    for (std::string const& file : packageFiles) {
       // hash only regular files
-      if (cmSystemTools::FileIsDirectory(*fileIt) ||
-          cmSystemTools::FileIsSymlink(*fileIt)) {
+      if (cmSystemTools::FileIsDirectory(file) ||
+          cmSystemTools::FileIsSymlink(file)) {
         continue;
       }
 
-      char md5sum[33];
-      if (!cmSystemTools::ComputeFileMD5(*fileIt, md5sum)) {
+      std::string output =
+        cmSystemTools::ComputeFileHash(file, cmCryptoHash::AlgoMD5);
+      if (output.empty()) {
         cmCPackLogger(cmCPackLog::LOG_ERROR, "Problem computing the md5 of "
-                        << *fileIt << std::endl);
+                        << file << std::endl);
       }
 
-      md5sum[32] = 0;
-
-      std::string output(md5sum);
-      output += "  " + *fileIt + "\n";
+      output += "  " + file + "\n";
       // debian md5sums entries are like this:
       // 014f3604694729f3bf19263bac599765  usr/bin/ccmake
       // thus strip the full path (with the trailing slash)
@@ -553,8 +545,8 @@ int cmCPackDebGenerator::createDeb()
     and
     https://lintian.debian.org/tags/control-file-has-bad-permissions.html
     */
-    const mode_t permission644 = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
-    const mode_t permissionExecute = S_IXUSR | S_IXGRP | S_IXOTH;
+    const mode_t permission644 = 0644;
+    const mode_t permissionExecute = 0111;
     const mode_t permission755 = permission644 | permissionExecute;
 
     // for md5sum and control (that we have generated here), we use 644
@@ -634,9 +626,8 @@ int cmCPackDebGenerator::createDeb()
 
       std::vector<std::string> controlExtraList;
       cmSystemTools::ExpandListArgument(controlExtra, controlExtraList);
-      for (std::vector<std::string>::iterator i = controlExtraList.begin();
-           i != controlExtraList.end(); ++i) {
-        std::string filenamename = cmsys::SystemTools::GetFilenameName(*i);
+      for (std::string const& i : controlExtraList) {
+        std::string filenamename = cmsys::SystemTools::GetFilenameName(i);
         std::string localcopy = strGenWDIR + "/" + filenamename;
 
         if (permissionStrictPolicy) {
@@ -646,7 +637,7 @@ int cmCPackDebGenerator::createDeb()
         }
 
         // if we can copy the file, it means it does exist, let's add it:
-        if (cmsys::SystemTools::CopyFileIfDifferent(*i, localcopy)) {
+        if (cmsys::SystemTools::CopyFileIfDifferent(i, localcopy)) {
           control_tar.Add(localcopy, strGenWDIR.length(), ".");
         }
       }
@@ -654,23 +645,25 @@ int cmCPackDebGenerator::createDeb()
   }
 
   // ar -r your-package-name.deb debian-binary control.tar.* data.tar.*
-  // since debian packages require BSD ar (most Linux distros and even
-  // FreeBSD and NetBSD ship GNU ar) we use a copy of OpenBSD ar here.
-  std::vector<std::string> arFiles;
-  std::string topLevelString = strGenWDIR + "/";
-  arFiles.push_back(topLevelString + "debian-binary");
-  arFiles.push_back(topLevelString + "control.tar.gz");
-  arFiles.push_back(topLevelString + "data.tar" + compression_suffix);
-  std::string outputFileName = this->GetOption("CPACK_TOPLEVEL_DIRECTORY");
-  outputFileName += "/";
-  outputFileName += this->GetOption("GEN_CPACK_OUTPUT_FILE_NAME");
-  int res = ar_append(outputFileName.c_str(), arFiles);
-  if (res != 0) {
-    std::string tmpFile =
-      this->GetOption("GEN_CPACK_TEMPORARY_PACKAGE_FILE_NAME");
-    tmpFile += "/Deb.log";
-    cmGeneratedFileStream ofs(tmpFile.c_str());
-    ofs << "# Problem creating archive using: " << res << std::endl;
+  // A debian package .deb is simply an 'ar' archive. The only subtle
+  // difference is that debian uses the BSD ar style archive whereas most
+  // Linux distro have a GNU ar.
+  // See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=161593 for more info
+  std::string const outputDir = this->GetOption("CPACK_TOPLEVEL_DIRECTORY");
+  std::string const outputName = this->GetOption("GEN_CPACK_OUTPUT_FILE_NAME");
+  std::string const outputPath = outputDir + "/" + outputName;
+  std::string const tlDir = strGenWDIR + "/";
+  cmGeneratedFileStream debStream;
+  debStream.Open(outputPath.c_str(), false, true);
+  cmArchiveWrite deb(debStream, cmArchiveWrite::CompressNone, "arbsd");
+  if (!deb.Add(tlDir + "debian-binary", tlDir.length()) ||
+      !deb.Add(tlDir + "control.tar.gz", tlDir.length()) ||
+      !deb.Add(tlDir + "data.tar" + compression_suffix, tlDir.length())) {
+    cmCPackLogger(cmCPackLog::LOG_ERROR, "Error creating debian package:"
+                    << std::endl
+                    << "#top level directory: " << outputDir << std::endl
+                    << "#file: " << outputName << std::endl
+                    << "#error:" << deb.GetError() << std::endl);
     return 0;
   }
   return 1;
@@ -695,252 +688,8 @@ std::string cmCPackDebGenerator::GetComponentInstallDirNameSuffix(
   // the current COMPONENT belongs to.
   std::string groupVar =
     "CPACK_COMPONENT_" + cmSystemTools::UpperCase(componentName) + "_GROUP";
-  if (CM_NULLPTR != GetOption(groupVar)) {
+  if (nullptr != GetOption(groupVar)) {
     return std::string(GetOption(groupVar));
   }
   return componentName;
 }
-
-// The following code is taken from OpenBSD ar:
-// http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ar/
-// It has been slightly modified:
-// -return error codes instead exit() in functions
-// -use the stdio file I/O functions instead the file descriptor based ones
-// -merged into one cxx file
-// -no additional options supported
-// The coding style hasn't been modified.
-
-/*-
- * Copyright (c) 1990, 1993, 1994
- *      The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Hugh Smith at The University of Guelph.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#define ARMAG "!<arch>\n" /* ar "magic number" */
-#define SARMAG 8          /* strlen(ARMAG); */
-
-#define AR_EFMT1 "#1/" /* extended format #1 */
-#define ARFMAG "`\n"
-
-/* Header format strings. */
-#define HDR1 "%s%-13d%-12ld%-6u%-6u%-8o%-10lld%2s"
-#define HDR2 "%-16.16s%-12ld%-6u%-6u%-8o%-10lld%2s"
-
-struct ar_hdr
-{
-  char ar_name[16]; /* name */
-  char ar_date[12]; /* modification time */
-  char ar_uid[6];   /* user id */
-  char ar_gid[6];   /* group id */
-  char ar_mode[8];  /* octal file permissions */
-  char ar_size[10]; /* size in bytes */
-  char ar_fmag[2];  /* consistency check */
-};
-
-/* Set up file copy. */
-#define SETCF(from, fromname, to, toname, pad)                                \
-  {                                                                           \
-    cf.rFile = from;                                                          \
-    cf.rname = fromname;                                                      \
-    cf.wFile = to;                                                            \
-    cf.wname = toname;                                                        \
-    cf.flags = pad;                                                           \
-  }
-
-/* File copy structure. */
-typedef struct
-{
-  FILE* rFile;        /* read file descriptor */
-  const char* rname;  /* read name */
-  FILE* wFile;        /* write file descriptor */
-  const char* wname;  /* write name */
-#define NOPAD 0x00    /* don't pad */
-#define WPAD 0x02     /* pad on writes */
-  unsigned int flags; /* pad flags */
-} CF;
-
-/* misc.c */
-
-static const char* ar_rname(const char* path)
-{
-  const char* ind = strrchr(path, '/');
-  return (ind) ? ind + 1 : path;
-}
-
-/* archive.c */
-
-typedef struct ar_hdr HDR;
-static char ar_hb[sizeof(HDR) + 1]; /* real header */
-
-static size_t ar_already_written;
-
-/* copy_ar --
- *      Copy size bytes from one file to another - taking care to handle the
- *      extra byte (for odd size files) when reading archives and writing an
- *      extra byte if necessary when adding files to archive.  The length of
- *      the object is the long name plus the object itself; the variable
- *      already_written gets set if a long name was written.
- *
- *      The padding is really unnecessary, and is almost certainly a remnant
- *      of early archive formats where the header included binary data which
- *      a PDP-11 required to start on an even byte boundary.  (Or, perhaps,
- *      because 16-bit word addressed copies were faster?)  Anyhow, it should
- *      have been ripped out long ago.
- */
-static int copy_ar(CF* cfp, off_t size)
-{
-  static char pad = '\n';
-  off_t sz = size;
-  size_t nr, nw;
-  char buf[8 * 1024];
-
-  if (sz == 0) {
-    return 0;
-  }
-
-  FILE* from = cfp->rFile;
-  FILE* to = cfp->wFile;
-  while (sz &&
-         (nr = fread(buf, 1, sz < static_cast<off_t>(sizeof(buf))
-                       ? static_cast<size_t>(sz)
-                       : sizeof(buf),
-                     from)) > 0) {
-    sz -= nr;
-    for (size_t off = 0; off < nr; nr -= off, off += nw) {
-      if ((nw = fwrite(buf + off, 1, nr, to)) < nr) {
-        return -1;
-      }
-    }
-  }
-  if (sz) {
-    return -2;
-  }
-
-  if (cfp->flags & WPAD && (size + ar_already_written) & 1 &&
-      fwrite(&pad, 1, 1, to) != 1) {
-    return -4;
-  }
-
-  return 0;
-}
-
-/* put_arobj --  Write an archive member to a file. */
-static int put_arobj(CF* cfp, struct stat* sb)
-{
-  int result = 0;
-  struct ar_hdr* hdr;
-
-  /* If passed an sb structure, reading a file from disk.  Get stat(2)
-   * information, build a name and construct a header.  (Files are named
-   * by their last component in the archive.) */
-  const char* name = ar_rname(cfp->rname);
-  (void)stat(cfp->rname, sb);
-
-  /* If not truncating names and the name is too long or contains
-   * a space, use extended format 1.   */
-  size_t lname = strlen(name);
-  uid_t uid = sb->st_uid;
-  gid_t gid = sb->st_gid;
-  if (uid > USHRT_MAX) {
-    uid = USHRT_MAX;
-  }
-  if (gid > USHRT_MAX) {
-    gid = USHRT_MAX;
-  }
-  if (lname > sizeof(hdr->ar_name) || strchr(name, ' ')) {
-    (void)sprintf(ar_hb, HDR1, AR_EFMT1, (int)lname, (long int)sb->st_mtime,
-                  (unsigned)uid, (unsigned)gid, (unsigned)sb->st_mode,
-                  (long long)sb->st_size + lname, ARFMAG);
-  } else {
-    lname = 0;
-    (void)sprintf(ar_hb, HDR2, name, (long int)sb->st_mtime, (unsigned)uid,
-                  (unsigned)gid, (unsigned)sb->st_mode, (long long)sb->st_size,
-                  ARFMAG);
-  }
-  off_t size = sb->st_size;
-
-  if (fwrite(ar_hb, 1, sizeof(HDR), cfp->wFile) != sizeof(HDR)) {
-    return -1;
-  }
-
-  if (lname) {
-    if (fwrite(name, 1, lname, cfp->wFile) != lname) {
-      return -2;
-    }
-    ar_already_written = lname;
-  }
-  result = copy_ar(cfp, size);
-  ar_already_written = 0;
-  return result;
-}
-
-/* append.c */
-
-/* append --
- *      Append files to the archive - modifies original archive or creates
- *      a new archive if named archive does not exist.
- */
-static int ar_append(const char* archive,
-                     const std::vector<std::string>& files)
-{
-  int eval = 0;
-  FILE* aFile = cmSystemTools::Fopen(archive, "wb+");
-  if (aFile != CM_NULLPTR) {
-    fwrite(ARMAG, SARMAG, 1, aFile);
-    if (fseek(aFile, 0, SEEK_END) != -1) {
-      CF cf;
-      struct stat sb;
-      /* Read from disk, write to an archive; pad on write. */
-      SETCF(CM_NULLPTR, CM_NULLPTR, aFile, archive, WPAD);
-      for (std::vector<std::string>::const_iterator fileIt = files.begin();
-           fileIt != files.end(); ++fileIt) {
-        const char* filename = fileIt->c_str();
-        FILE* file = cmSystemTools::Fopen(filename, "rb");
-        if (file == CM_NULLPTR) {
-          eval = -1;
-          continue;
-        }
-        cf.rFile = file;
-        cf.rname = filename;
-        int result = put_arobj(&cf, &sb);
-        (void)fclose(file);
-        if (result != 0) {
-          eval = -2;
-          break;
-        }
-      }
-    } else {
-      eval = -3;
-    }
-    fclose(aFile);
-  } else {
-    eval = -4;
-  }
-  return eval;
-}
diff --git a/Source/CPack/cmCPackDebGenerator.h b/Source/CPack/cmCPackDebGenerator.h
index e7cde1145..b4f0c7972 100644
--- a/Source/CPack/cmCPackDebGenerator.h
+++ b/Source/CPack/cmCPackDebGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackDebGenerator_h
 #define cmCPackDebGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCPackGenerator.h"
 
@@ -23,7 +23,7 @@ public:
    * Construct generator
    */
   cmCPackDebGenerator();
-  ~cmCPackDebGenerator() CM_OVERRIDE;
+  ~cmCPackDebGenerator() override;
 
   static bool CanGenerate()
   {
@@ -40,7 +40,7 @@ public:
   }
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
+  int InitializeInternal() override;
   /**
    * This method factors out the work done in component packaging case.
    */
@@ -57,11 +57,11 @@ protected:
    * components will be put in a single installer.
    */
   int PackageComponentsAllInOne(const std::string& compInstDirName);
-  int PackageFiles() CM_OVERRIDE;
-  const char* GetOutputExtension() CM_OVERRIDE { return ".deb"; }
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  int PackageFiles() override;
+  const char* GetOutputExtension() override { return ".deb"; }
+  bool SupportsComponentInstallation() const override;
   std::string GetComponentInstallDirNameSuffix(
-    const std::string& componentName) CM_OVERRIDE;
+    const std::string& componentName) override;
 
 private:
   int createDeb();
diff --git a/Source/CPack/cmCPackDragNDropGenerator.cxx b/Source/CPack/cmCPackDragNDropGenerator.cxx
index d26d5bc1a..1e1543f9d 100644
--- a/Source/CPack/cmCPackDragNDropGenerator.cxx
+++ b/Source/CPack/cmCPackDragNDropGenerator.cxx
@@ -136,17 +136,17 @@ int cmCPackDragNDropGenerator::InitializeInternal()
                     "CPACK_DMG_SLA_LANGUAGES set but empty" << std::endl);
       return 0;
     }
-    for (size_t i = 0; i < languages.size(); ++i) {
-      std::string license = slaDirectory + "/" + languages[i] + ".license.txt";
+    for (auto const& language : languages) {
+      std::string license = slaDirectory + "/" + language + ".license.txt";
       if (!singleLicense && !cmSystemTools::FileExists(license)) {
         cmCPackLogger(cmCPackLog::LOG_ERROR, "Missing license file "
-                        << languages[i] << ".license.txt" << std::endl);
+                        << language << ".license.txt" << std::endl);
         return 0;
       }
-      std::string menu = slaDirectory + "/" + languages[i] + ".menu.txt";
+      std::string menu = slaDirectory + "/" + language + ".menu.txt";
       if (!cmSystemTools::FileExists(menu)) {
         cmCPackLogger(cmCPackLog::LOG_ERROR, "Missing menu file "
-                        << languages[i] << ".menu.txt" << std::endl);
+                        << language << ".menu.txt" << std::endl);
         return 0;
       }
     }
@@ -185,19 +185,19 @@ int cmCPackDragNDropGenerator::PackageFiles()
 
   // loop to create dmg files
   packageFileNames.clear();
-  for (size_t i = 0; i < package_files.size(); i++) {
+  for (auto const& package_file : package_files) {
     std::string full_package_name = std::string(toplevel) + std::string("/");
-    if (package_files[i] == "ALL_IN_ONE") {
+    if (package_file == "ALL_IN_ONE") {
       full_package_name += this->GetOption("CPACK_PACKAGE_FILE_NAME");
     } else {
-      full_package_name += package_files[i];
+      full_package_name += package_file;
     }
     full_package_name += std::string(GetOutputExtension());
     packageFileNames.push_back(full_package_name);
 
     std::string src_dir = toplevel;
     src_dir += "/";
-    src_dir += package_files[i];
+    src_dir += package_file;
 
     if (0 == this->CreateDMG(src_dir, full_package_name)) {
       return 0;
@@ -226,14 +226,14 @@ bool cmCPackDragNDropGenerator::CreateEmptyFile(std::ostringstream& target,
   cmsys::ofstream fout(target.str().c_str(), std::ios::out | std::ios::binary);
   if (!fout) {
     return false;
-  } else {
-    // Seek to desired size - 1 byte
-    fout.seekp(size - 1, std::ios::beg);
-    char byte = 0;
-    // Write one byte to ensure file grows
-    fout.write(&byte, 1);
   }
 
+  // Seek to desired size - 1 byte
+  fout.seekp(size - 1, std::ios::beg);
+  char byte = 0;
+  // Write one byte to ensure file grows
+  fout.write(&byte, 1);
+
   return true;
 }
 
@@ -242,9 +242,9 @@ bool cmCPackDragNDropGenerator::RunCommand(std::ostringstream& command,
 {
   int exit_code = 1;
 
-  bool result =
-    cmSystemTools::RunSingleCommand(command.str().c_str(), output, output,
-                                    &exit_code, 0, this->GeneratorVerbose, 0);
+  bool result = cmSystemTools::RunSingleCommand(command.str().c_str(), output,
+                                                output, &exit_code, nullptr,
+                                                this->GeneratorVerbose, 0);
 
   if (!result || exit_code) {
     cmCPackLogger(cmCPackLog::LOG_ERROR, "Error executing: " << command.str()
@@ -417,6 +417,7 @@ int cmCPackDragNDropGenerator::CreateDMG(const std::string& src_dir,
   temp_image_command << " -ov";
   temp_image_command << " -srcfolder \"" << staging.str() << "\"";
   temp_image_command << " -volname \"" << cpack_dmg_volume_name << "\"";
+  temp_image_command << " -fs HFS+";
   temp_image_command << " -format " << temp_image_format;
   temp_image_command << " \"" << temp_image << "\"";
 
@@ -448,6 +449,8 @@ int cmCPackDragNDropGenerator::CreateDMG(const std::string& src_dir,
     cmsys::RegularExpression mountpoint_regex(".*(/Volumes/[^\n]+)\n.*");
     mountpoint_regex.find(attach_output.c_str());
     std::string const temp_mount = mountpoint_regex.match(1);
+    std::string const temp_mount_name =
+      temp_mount.substr(sizeof("/Volumes/") - 1);
 
     // Remove dummy padding file so we have enough space on RW image ...
     std::ostringstream dummy_padding;
@@ -481,7 +484,7 @@ int cmCPackDragNDropGenerator::CreateDMG(const std::string& src_dir,
       std::ostringstream setup_script_command;
       setup_script_command << "osascript"
                            << " \"" << cpack_dmg_ds_store_setup_script << "\""
-                           << " \"" << cpack_dmg_volume_name << "\"";
+                           << " \"" << temp_mount_name << "\"";
       std::string error;
       if (!this->RunCommand(setup_script_command, &error)) {
         cmCPackLogger(cmCPackLog::LOG_ERROR,
@@ -551,16 +554,17 @@ int cmCPackDragNDropGenerator::CreateDMG(const std::string& src_dir,
       header_data.push_back(languages.size());
       for (size_t i = 0; i < languages.size(); ++i) {
         CFStringRef language_cfstring = CFStringCreateWithCString(
-          NULL, languages[i].c_str(), kCFStringEncodingUTF8);
+          nullptr, languages[i].c_str(), kCFStringEncodingUTF8);
         CFStringRef iso_language =
           CFLocaleCreateCanonicalLanguageIdentifierFromString(
-            NULL, language_cfstring);
+            nullptr, language_cfstring);
         if (!iso_language) {
           cmCPackLogger(cmCPackLog::LOG_ERROR, languages[i]
                           << " is not a recognized language" << std::endl);
         }
-        char* iso_language_cstr = (char*)malloc(65);
-        CFStringGetCString(iso_language, iso_language_cstr, 64,
+        char iso_language_cstr[65];
+        CFStringGetCString(iso_language, iso_language_cstr,
+                           sizeof(iso_language_cstr) - 1,
                            kCFStringEncodingMacRoman);
         LangCode lang = 0;
         RegionCode region = 0;
@@ -573,11 +577,9 @@ int cmCPackDragNDropGenerator::CreateDMG(const std::string& src_dir,
           cmCPackLogger(cmCPackLog::LOG_ERROR,
                         "No language/region code available for "
                           << iso_language_cstr << std::endl);
-          free(iso_language_cstr);
           return 0;
         }
 #ifdef HAVE_CoreServices
-        free(iso_language_cstr);
         header_data.push_back(region);
         header_data.push_back(i);
         header_data.push_back(0);
@@ -767,7 +769,8 @@ std::string cmCPackDragNDropGenerator::GetComponentInstallDirNameSuffix(
 
 bool cmCPackDragNDropGenerator::WriteLicense(
   cmGeneratedFileStream& outputStream, int licenseNumber,
-  std::string licenseLanguage, std::string licenseFile, std::string* error)
+  std::string licenseLanguage, const std::string& licenseFile,
+  std::string* error)
 {
   if (!licenseFile.empty() && !singleLicense) {
     licenseNumber = 5002;
@@ -793,8 +796,8 @@ bool cmCPackDragNDropGenerator::WriteLicense(
         if (!this->BreakLongLine(line, lines, error)) {
           return false;
         }
-        for (size_t i = 0; i < lines.size(); ++i) {
-          outputStream << "        \"" << lines[i] << "\"\n";
+        for (auto const& l : lines) {
+          outputStream << "        \"" << l << "\"\n";
         }
       }
       outputStream << "        \"\\n\"\n";
@@ -863,10 +866,11 @@ bool cmCPackDragNDropGenerator::BreakLongLine(const std::string& line,
     size_t line_length = max_line_length;
     if (i + line_length > line.size()) {
       line_length = line.size() - i;
-    } else
+    } else {
       while (line_length > 0 && line[i + line_length - 1] != ' ') {
         line_length = line_length - 1;
       }
+    }
 
     if (line_length == 0) {
       *error = "Please make sure there are no words "
diff --git a/Source/CPack/cmCPackDragNDropGenerator.h b/Source/CPack/cmCPackDragNDropGenerator.h
index ae2cc173f..d8c5c8337 100644
--- a/Source/CPack/cmCPackDragNDropGenerator.h
+++ b/Source/CPack/cmCPackDragNDropGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackDragNDropGenerator_h
 #define cmCPackDragNDropGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <sstream>
 #include <stddef.h>
@@ -23,32 +23,30 @@ public:
   cmCPackTypeMacro(cmCPackDragNDropGenerator, cmCPackGenerator);
 
   cmCPackDragNDropGenerator();
-  virtual ~cmCPackDragNDropGenerator();
+  ~cmCPackDragNDropGenerator() override;
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
-  const char* GetOutputExtension() CM_OVERRIDE;
-  int PackageFiles() CM_OVERRIDE;
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  int InitializeInternal() override;
+  const char* GetOutputExtension() override;
+  int PackageFiles() override;
+  bool SupportsComponentInstallation() const override;
 
   bool CopyFile(std::ostringstream& source, std::ostringstream& target);
   bool CreateEmptyFile(std::ostringstream& target, size_t size);
   bool RunCommand(std::ostringstream& command, std::string* output = 0);
 
   std::string GetComponentInstallDirNameSuffix(
-    const std::string& componentName) CM_OVERRIDE;
+    const std::string& componentName) override;
 
   int CreateDMG(const std::string& src_dir, const std::string& output_file);
 
-  std::string InstallPrefix;
-
 private:
   std::string slaDirectory;
   bool singleLicense;
 
   bool WriteLicense(cmGeneratedFileStream& outputStream, int licenseNumber,
-                    std::string licenseLanguage, std::string licenseFile,
-                    std::string* error);
+                    std::string licenseLanguage,
+                    const std::string& licenseFile, std::string* error);
   bool BreakLongLine(const std::string& line, std::vector<std::string>& lines,
                      std::string* error);
   void EscapeQuotesAndBackslashes(std::string& line);
diff --git a/Source/CPack/cmCPackFreeBSDGenerator.cxx b/Source/CPack/cmCPackFreeBSDGenerator.cxx
new file mode 100644
index 000000000..91ae1a23f
--- /dev/null
+++ b/Source/CPack/cmCPackFreeBSDGenerator.cxx
@@ -0,0 +1,359 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#include "cmCPackFreeBSDGenerator.h"
+
+#include "cmArchiveWrite.h"
+#include "cmCPackArchiveGenerator.h"
+#include "cmCPackLog.h"
+#include "cmGeneratedFileStream.h"
+#include "cmSystemTools.h"
+
+// Needed for ::open() and ::stat()
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <pkg.h>
+
+#include <algorithm>
+
+cmCPackFreeBSDGenerator::cmCPackFreeBSDGenerator()
+  : cmCPackArchiveGenerator(cmArchiveWrite::CompressXZ, "paxr")
+{
+}
+
+int cmCPackFreeBSDGenerator::InitializeInternal()
+{
+  this->SetOptionIfNotSet("CPACK_PACKAGING_INSTALL_PREFIX", "/usr/local");
+  this->SetOption("CPACK_INCLUDE_TOPLEVEL_DIRECTORY", "0");
+  return this->Superclass::InitializeInternal();
+}
+
+cmCPackFreeBSDGenerator::~cmCPackFreeBSDGenerator()
+{
+}
+
+// This is a wrapper, for use only in stream-based output,
+// that will output a string in UCL escaped fashion (in particular,
+// quotes and backslashes are escaped). The list of characters
+// to escape is taken from https://github.com/vstakhov/libucl
+// (which is the reference implementation pkg(8) refers to).
+class EscapeQuotes
+{
+public:
+  const std::string& value;
+
+  EscapeQuotes(const std::string& s)
+    : value(s)
+  {
+  }
+};
+
+// Output a string as "string" with escaping applied.
+cmGeneratedFileStream& operator<<(cmGeneratedFileStream& s,
+                                  const EscapeQuotes& v)
+{
+  s << '"';
+  for (std::string::size_type i = 0; i < v.value.length(); ++i) {
+    char c = v.value[i];
+    switch (c) {
+      case '\n':
+        s << "\\n";
+        break;
+      case '\r':
+        s << "\\r";
+        break;
+      case '\b':
+        s << "\\b";
+        break;
+      case '\t':
+        s << "\\t";
+        break;
+      case '\f':
+        s << "\\f";
+        break;
+      case '\\':
+        s << "\\\\";
+        break;
+      case '"':
+        s << "\\\"";
+        break;
+      default:
+        s << c;
+        break;
+    }
+  }
+  s << '"';
+  return s;
+}
+
+// The following classes are all helpers for writing out the UCL
+// manifest file (it also looks like JSON). ManifestKey just has
+// a (string-valued) key; subclasses add a specific kind of
+// value-type to the key, and implement write_value() to output
+// the corresponding UCL.
+class ManifestKey
+{
+public:
+  std::string key;
+
+  ManifestKey(const std::string& k)
+    : key(k)
+  {
+  }
+
+  virtual ~ManifestKey() {}
+
+  // Output the value associated with this key to the stream @p s.
+  // Format is to be decided by subclasses.
+  virtual void write_value(cmGeneratedFileStream& s) const = 0;
+};
+
+// Basic string-value (e.g. "name": "cmake")
+class ManifestKeyValue : public ManifestKey
+{
+public:
+  std::string value;
+
+  ManifestKeyValue(const std::string& k, const std::string& v)
+    : ManifestKey(k)
+    , value(v)
+  {
+  }
+
+  void write_value(cmGeneratedFileStream& s) const override
+  {
+    s << EscapeQuotes(value);
+  }
+};
+
+// List-of-strings values (e.g. "licenses": ["GPLv2", "LGPLv2"])
+class ManifestKeyListValue : public ManifestKey
+{
+public:
+  typedef std::vector<std::string> VList;
+  VList value;
+
+  ManifestKeyListValue(const std::string& k)
+    : ManifestKey(k)
+  {
+  }
+
+  ManifestKeyListValue& operator<<(const std::string& v)
+  {
+    value.push_back(v);
+    return *this;
+  }
+
+  ManifestKeyListValue& operator<<(const std::vector<std::string>& v)
+  {
+    for (VList::const_iterator it = v.begin(); it != v.end(); ++it) {
+      (*this) << (*it);
+    }
+    return *this;
+  }
+
+  void write_value(cmGeneratedFileStream& s) const override
+  {
+    bool with_comma = false;
+
+    s << '[';
+    for (VList::const_iterator it = value.begin(); it != value.end(); ++it) {
+      s << (with_comma ? ',' : ' ');
+      s << EscapeQuotes(*it);
+      with_comma = true;
+    }
+    s << " ]";
+  }
+};
+
+// Deps: actually a dictionary, but we'll treat it as a
+// list so we only name the deps, and produce dictionary-
+// like output via write_value()
+class ManifestKeyDepsValue : public ManifestKeyListValue
+{
+public:
+  ManifestKeyDepsValue(const std::string& k)
+    : ManifestKeyListValue(k)
+  {
+  }
+
+  void write_value(cmGeneratedFileStream& s) const override
+  {
+    s << "{\n";
+    for (VList::const_iterator it = value.begin(); it != value.end(); ++it) {
+      s << "  \"" << *it << "\": {\"origin\": \"" << *it << "\"},\n";
+    }
+    s << '}';
+  }
+};
+
+// Write one of the key-value classes (above) to the stream @p s
+cmGeneratedFileStream& operator<<(cmGeneratedFileStream& s,
+                                  const ManifestKey& v)
+{
+  s << '"' << v.key << "\": ";
+  v.write_value(s);
+  s << ",\n";
+  return s;
+}
+
+// Look up variable; if no value is set, returns an empty string;
+// basically a wrapper that handles the NULL-ptr return from GetOption().
+std::string cmCPackFreeBSDGenerator::var_lookup(const char* var_name)
+{
+  const char* pv = this->GetOption(var_name);
+  if (!pv) {
+    return std::string();
+  } else {
+    return pv;
+  }
+}
+
+// Produce UCL in the given @p manifest file for the common
+// manifest fields (common to the compact and regular formats),
+// by reading the CPACK_FREEBSD_* variables.
+void cmCPackFreeBSDGenerator::write_manifest_fields(
+  cmGeneratedFileStream& manifest)
+{
+  manifest << ManifestKeyValue("name",
+                               var_lookup("CPACK_FREEBSD_PACKAGE_NAME"));
+  manifest << ManifestKeyValue("origin",
+                               var_lookup("CPACK_FREEBSD_PACKAGE_ORIGIN"));
+  manifest << ManifestKeyValue("version",
+                               var_lookup("CPACK_FREEBSD_PACKAGE_VERSION"));
+  manifest << ManifestKeyValue("maintainer",
+                               var_lookup("CPACK_FREEBSD_PACKAGE_MAINTAINER"));
+  manifest << ManifestKeyValue("comment",
+                               var_lookup("CPACK_FREEBSD_PACKAGE_COMMENT"));
+  manifest << ManifestKeyValue(
+    "desc", var_lookup("CPACK_FREEBSD_PACKAGE_DESCRIPTION"));
+  manifest << ManifestKeyValue("www", var_lookup("CPACK_FREEBSD_PACKAGE_WWW"));
+  std::vector<std::string> licenses;
+  cmSystemTools::ExpandListArgument(
+    var_lookup("CPACK_FREEBSD_PACKAGE_LICENSE"), licenses);
+  std::string licenselogic("single");
+  if (licenses.size() < 1) {
+    cmSystemTools::SetFatalErrorOccured();
+  } else if (licenses.size() > 1) {
+    licenselogic = var_lookup("CPACK_FREEBSD_PACKAGE_LICENSE_LOGIC");
+  }
+  manifest << ManifestKeyValue("licenselogic", licenselogic);
+  manifest << (ManifestKeyListValue("licenses") << licenses);
+  std::vector<std::string> categories;
+  cmSystemTools::ExpandListArgument(
+    var_lookup("CPACK_FREEBSD_PACKAGE_CATEGORIES"), categories);
+  manifest << (ManifestKeyListValue("categories") << categories);
+  manifest << ManifestKeyValue("prefix", var_lookup("CMAKE_INSTALL_PREFIX"));
+  std::vector<std::string> deps;
+  cmSystemTools::ExpandListArgument(var_lookup("CPACK_FREEBSD_PACKAGE_DEPS"),
+                                    deps);
+  if (deps.size() > 0) {
+    manifest << (ManifestKeyDepsValue("deps") << deps);
+  }
+}
+
+// Package only actual files; others are ignored (in particular,
+// intermediate subdirectories are ignored).
+static bool ignore_file(const std::string& filename)
+{
+  struct stat statbuf;
+
+  if (!((stat(filename.c_str(), &statbuf) >= 0) &&
+        ((statbuf.st_mode & S_IFMT) == S_IFREG))) {
+    return true;
+  }
+  // May be other reasons to return false
+  return false;
+}
+
+// Write the given list of @p files to the manifest stream @p s,
+// as the UCL field "files" (which is dictionary-valued, to
+// associate filenames with hashes). All the files are transformed
+// to paths relative to @p toplevel, with a leading / (since the paths
+// in FreeBSD package files are supposed to be absolute).
+void write_manifest_files(cmGeneratedFileStream& s,
+                          const std::string& toplevel,
+                          const std::vector<std::string>& files)
+{
+  const char* c_toplevel = toplevel.c_str();
+  std::vector<std::string>::const_iterator it;
+
+  s << "\"files\": {\n";
+  for (it = files.begin(); it != files.end(); ++it) {
+    s << "  \"/" << cmSystemTools::RelativePath(c_toplevel, it->c_str())
+      << "\": \""
+      << "<sha256>"
+      << "\",\n";
+  }
+  s << "  },\n";
+}
+
+static bool has_suffix(const std::string& str, const std::string& suffix)
+{
+  return str.size() >= suffix.size() &&
+    str.compare(str.size() - suffix.size(), suffix.size(), suffix) == 0;
+}
+
+int cmCPackFreeBSDGenerator::PackageFiles()
+{
+  if (!this->ReadListFile("CPackFreeBSD.cmake")) {
+    cmCPackLogger(cmCPackLog::LOG_ERROR,
+                  "Error while execution CPackFreeBSD.cmake" << std::endl);
+    return 0;
+  }
+
+  std::vector<std::string>::const_iterator fileIt;
+  std::string dir = cmSystemTools::GetCurrentWorkingDirectory();
+  cmSystemTools::ChangeDirectory(toplevel);
+
+  files.erase(std::remove_if(files.begin(), files.end(), ignore_file),
+              files.end());
+
+  std::string manifestname = toplevel + "/+MANIFEST";
+  {
+    cmGeneratedFileStream manifest(manifestname.c_str());
+    manifest << "{\n";
+    write_manifest_fields(manifest);
+    write_manifest_files(manifest, toplevel, files);
+    manifest << "}\n";
+  }
+
+  cmCPackLogger(cmCPackLog::LOG_DEBUG, "Toplevel: " << toplevel << std::endl);
+
+  if (WantsComponentInstallation()) {
+    // CASE 1 : COMPONENT ALL-IN-ONE package
+    // If ALL COMPONENTS in ONE package has been requested
+    // then the package file is unique and should be open here.
+    if (componentPackageMethod == ONE_PACKAGE) {
+      return PackageComponentsAllInOne();
+    }
+    // CASE 2 : COMPONENT CLASSICAL package(s) (i.e. not all-in-one)
+    // There will be 1 package for each component group
+    // however one may require to ignore component group and
+    // in this case you'll get 1 package for each component.
+    return PackageComponents(componentPackageMethod ==
+                             ONE_PACKAGE_PER_COMPONENT);
+  }
+
+  std::string output_dir =
+    cmSystemTools::CollapseCombinedPath(toplevel, "../");
+  pkg_create_from_manifest(output_dir.c_str(), ::TXZ, toplevel.c_str(),
+                           manifestname.c_str(), NULL);
+
+  std::string broken_suffix = std::string("-") +
+    var_lookup("CPACK_TOPLEVEL_TAG") + std::string(GetOutputExtension());
+  for (std::vector<std::string>::iterator it = packageFileNames.begin();
+       it != packageFileNames.end(); ++it) {
+    cmCPackLogger(cmCPackLog::LOG_DEBUG, "Packagefile " << *it << std::endl);
+    if (has_suffix(*it, broken_suffix)) {
+      it->replace(it->size() - broken_suffix.size(), std::string::npos,
+                  GetOutputExtension());
+      break;
+    }
+  }
+
+  cmSystemTools::ChangeDirectory(dir);
+  return 1;
+}
diff --git a/Source/CPack/cmCPackFreeBSDGenerator.h b/Source/CPack/cmCPackFreeBSDGenerator.h
new file mode 100644
index 000000000..99d2e2421
--- /dev/null
+++ b/Source/CPack/cmCPackFreeBSDGenerator.h
@@ -0,0 +1,37 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#ifndef cmCPackFreeBSDGenerator_h
+#define cmCPackFreeBSDGenerator_h
+
+#include <cmConfigure.h>
+
+#include "cmCPackArchiveGenerator.h"
+#include "cmCPackGenerator.h"
+
+class cmGeneratedFileStream;
+
+/** \class cmCPackFreeBSDGenerator
+ * \brief A generator for FreeBSD package files (TXZ with a manifest)
+ *
+ */
+class cmCPackFreeBSDGenerator : public cmCPackArchiveGenerator
+{
+public:
+  cmCPackTypeMacro(cmCPackFreeBSDGenerator, cmCPackArchiveGenerator);
+  /**
+   * Construct generator
+   */
+  cmCPackFreeBSDGenerator();
+  ~cmCPackFreeBSDGenerator() override;
+
+  int InitializeInternal() override;
+  int PackageFiles() override;
+
+protected:
+  const char* GetOutputExtension() override { return ".txz"; }
+
+  std::string var_lookup(const char* var_name);
+  void write_manifest_fields(cmGeneratedFileStream&);
+};
+
+#endif
diff --git a/Source/CPack/cmCPackGenerator.cxx b/Source/CPack/cmCPackGenerator.cxx
index d8e2753cf..ecb5adb47 100644
--- a/Source/CPack/cmCPackGenerator.cxx
+++ b/Source/CPack/cmCPackGenerator.cxx
@@ -6,6 +6,7 @@
 #include "cmsys/Glob.hxx"
 #include "cmsys/RegularExpression.hxx"
 #include <algorithm>
+#include <memory> // IWYU pragma: keep
 #include <utility>
 
 #include "cmCPackComponentGroup.h"
@@ -17,7 +18,6 @@
 #include "cmStateSnapshot.h"
 #include "cmWorkingDirectory.h"
 #include "cmXMLSafe.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 #if defined(__HAIKU__)
@@ -28,14 +28,14 @@
 cmCPackGenerator::cmCPackGenerator()
 {
   this->GeneratorVerbose = cmSystemTools::OUTPUT_NONE;
-  this->MakefileMap = CM_NULLPTR;
-  this->Logger = CM_NULLPTR;
+  this->MakefileMap = nullptr;
+  this->Logger = nullptr;
   this->componentPackageMethod = ONE_PACKAGE_PER_GROUP;
 }
 
 cmCPackGenerator::~cmCPackGenerator()
 {
-  this->MakefileMap = CM_NULLPTR;
+  this->MakefileMap = nullptr;
 }
 
 void cmCPackGeneratorProgress(const char* msg, float prog, void* ptr)
@@ -156,7 +156,7 @@ int cmCPackGenerator::PrepareNames()
   }
   const char* algoSignature = this->GetOption("CPACK_PACKAGE_CHECKSUM");
   if (algoSignature) {
-    if (cmCryptoHash::New(algoSignature).get() == CM_NULLPTR) {
+    if (!cmCryptoHash::New(algoSignature)) {
       cmCPackLogger(cmCPackLog::LOG_ERROR, "Cannot recognize algorithm: "
                       << algoSignature << std::endl);
       return 0;
@@ -248,25 +248,23 @@ int cmCPackGenerator::InstallProjectViaInstallCommands(
     cmSystemTools::PutEnv(tempInstallDirectoryEnv);
     std::vector<std::string> installCommandsVector;
     cmSystemTools::ExpandListArgument(installCommands, installCommandsVector);
-    std::vector<std::string>::iterator it;
-    for (it = installCommandsVector.begin(); it != installCommandsVector.end();
-         ++it) {
-      cmCPackLogger(cmCPackLog::LOG_VERBOSE, "Execute: " << *it << std::endl);
+    for (std::string const& ic : installCommandsVector) {
+      cmCPackLogger(cmCPackLog::LOG_VERBOSE, "Execute: " << ic << std::endl);
       std::string output;
       int retVal = 1;
       bool resB =
-        cmSystemTools::RunSingleCommand(it->c_str(), &output, &output, &retVal,
-                                        CM_NULLPTR, this->GeneratorVerbose, 0);
+        cmSystemTools::RunSingleCommand(ic.c_str(), &output, &output, &retVal,
+                                        nullptr, this->GeneratorVerbose, 0);
       if (!resB || retVal) {
         std::string tmpFile = this->GetOption("CPACK_TOPLEVEL_DIRECTORY");
         tmpFile += "/InstallOutput.log";
         cmGeneratedFileStream ofs(tmpFile.c_str());
-        ofs << "# Run command: " << *it << std::endl
+        ofs << "# Run command: " << ic << std::endl
             << "# Output:" << std::endl
             << output << std::endl;
         cmCPackLogger(
           cmCPackLog::LOG_ERROR, "Problem running install command: "
-            << *it << std::endl
+            << ic << std::endl
             << "Please check " << tmpFile << " for errors" << std::endl);
         return 0;
       }
@@ -286,12 +284,10 @@ int cmCPackGenerator::InstallProjectViaInstalledDirectories(
     std::vector<std::string> ignoreFilesRegexString;
     cmSystemTools::ExpandListArgument(cpackIgnoreFiles,
                                       ignoreFilesRegexString);
-    std::vector<std::string>::iterator it;
-    for (it = ignoreFilesRegexString.begin();
-         it != ignoreFilesRegexString.end(); ++it) {
+    for (std::string const& ifr : ignoreFilesRegexString) {
       cmCPackLogger(cmCPackLog::LOG_VERBOSE,
-                    "Create ignore files regex for: " << *it << std::endl);
-      ignoreFilesRegex.push_back(it->c_str());
+                    "Create ignore files regex for: " << ifr << std::endl);
+      ignoreFilesRegex.push_back(ifr.c_str());
     }
   }
   const char* installDirectories =
@@ -313,7 +309,7 @@ int cmCPackGenerator::InstallProjectViaInstalledDirectories(
     const std::string& tempDir = tempInstallDirectory;
     for (it = installDirectoriesVector.begin();
          it != installDirectoriesVector.end(); ++it) {
-      std::vector<std::pair<std::string, std::string> > symlinkedFiles;
+      std::vector<std::pair<std::string, std::string>> symlinkedFiles;
       cmCPackLogger(cmCPackLog::LOG_DEBUG, "Find files" << std::endl);
       cmsys::Glob gl;
       std::string top = *it;
@@ -334,15 +330,14 @@ int cmCPackGenerator::InstallProjectViaInstalledDirectories(
       files = gl.GetFiles();
       std::vector<std::string>::iterator gfit;
       std::vector<cmsys::RegularExpression>::iterator regIt;
-      for (gfit = files.begin(); gfit != files.end(); ++gfit) {
+      for (std::string const& gf : files) {
         bool skip = false;
-        std::string inFile = *gfit;
-        if (cmSystemTools::FileIsDirectory(*gfit)) {
+        std::string inFile = gf;
+        if (cmSystemTools::FileIsDirectory(gf)) {
           inFile += '/';
         }
-        for (regIt = ignoreFilesRegex.begin(); regIt != ignoreFilesRegex.end();
-             ++regIt) {
-          if (regIt->find(inFile.c_str())) {
+        for (cmsys::RegularExpression& reg : ignoreFilesRegex) {
+          if (reg.find(inFile.c_str())) {
             cmCPackLogger(cmCPackLog::LOG_VERBOSE,
                           "Ignore file: " << inFile << std::endl);
             skip = true;
@@ -353,7 +348,7 @@ int cmCPackGenerator::InstallProjectViaInstalledDirectories(
         }
         std::string filePath = tempDir;
         filePath += "/" + subdir + "/" +
-          cmSystemTools::RelativePath(top.c_str(), gfit->c_str());
+          cmSystemTools::RelativePath(top.c_str(), gf.c_str());
         cmCPackLogger(cmCPackLog::LOG_DEBUG, "Copy file: "
                         << inFile << " -> " << filePath << std::endl);
         /* If the file is a symlink we will have to re-create it */
@@ -377,33 +372,30 @@ int cmCPackGenerator::InstallProjectViaInstalledDirectories(
       }
       /* rebuild symlinks in the installed tree */
       if (!symlinkedFiles.empty()) {
-        std::vector<std::pair<std::string, std::string> >::iterator
-          symlinkedIt;
         std::string curDir = cmSystemTools::GetCurrentWorkingDirectory();
         std::string goToDir = tempDir;
         goToDir += "/" + subdir;
         cmCPackLogger(cmCPackLog::LOG_DEBUG, "Change dir to: " << goToDir
                                                                << std::endl);
         cmWorkingDirectory workdir(goToDir);
-        for (symlinkedIt = symlinkedFiles.begin();
-             symlinkedIt != symlinkedFiles.end(); ++symlinkedIt) {
+        for (auto const& symlinked : symlinkedFiles) {
           cmCPackLogger(cmCPackLog::LOG_DEBUG, "Will create a symlink: "
-                          << symlinkedIt->second << "--> "
-                          << symlinkedIt->first << std::endl);
+                          << symlinked.second << "--> " << symlinked.first
+                          << std::endl);
           // make sure directory exists for symlink
           std::string destDir =
-            cmSystemTools::GetFilenamePath(symlinkedIt->second);
+            cmSystemTools::GetFilenamePath(symlinked.second);
           if (!destDir.empty() && !cmSystemTools::MakeDirectory(destDir)) {
             cmCPackLogger(cmCPackLog::LOG_ERROR, "Cannot create dir: "
                             << destDir << "\nTrying to create symlink: "
-                            << symlinkedIt->second << "--> "
-                            << symlinkedIt->first << std::endl);
+                            << symlinked.second << "--> " << symlinked.first
+                            << std::endl);
           }
-          if (!cmSystemTools::CreateSymlink(symlinkedIt->first,
-                                            symlinkedIt->second)) {
+          if (!cmSystemTools::CreateSymlink(symlinked.first,
+                                            symlinked.second)) {
             cmCPackLogger(cmCPackLog::LOG_ERROR, "Cannot create symlink: "
-                            << symlinkedIt->second << "--> "
-                            << symlinkedIt->first << std::endl);
+                            << symlinked.second << "--> " << symlinked.first
+                            << std::endl);
             return 0;
           }
         }
@@ -424,10 +416,7 @@ int cmCPackGenerator::InstallProjectViaInstallScript(
                                                                 << std::endl);
     std::vector<std::string> cmakeScriptsVector;
     cmSystemTools::ExpandListArgument(cmakeScripts, cmakeScriptsVector);
-    std::vector<std::string>::iterator it;
-    for (it = cmakeScriptsVector.begin(); it != cmakeScriptsVector.end();
-         ++it) {
-      std::string installScript = *it;
+    for (std::string const& installScript : cmakeScriptsVector) {
 
       cmCPackLogger(cmCPackLog::LOG_OUTPUT,
                     "- Install script: " << installScript << std::endl);
@@ -533,10 +522,8 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
         if (installTypes && *installTypes) {
           std::vector<std::string> installTypesVector;
           cmSystemTools::ExpandListArgument(installTypes, installTypesVector);
-          std::vector<std::string>::iterator installTypeIt;
-          for (installTypeIt = installTypesVector.begin();
-               installTypeIt != installTypesVector.end(); ++installTypeIt) {
-            this->GetInstallationType(installProjectName, *installTypeIt);
+          for (std::string const& installType : installTypesVector) {
+            this->GetInstallationType(installProjectName, installType);
           }
         }
 
@@ -546,10 +533,8 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
         const char* components = this->GetOption(componentsVar);
         if (components && *components) {
           cmSystemTools::ExpandListArgument(components, componentsVector);
-          std::vector<std::string>::iterator compIt;
-          for (compIt = componentsVector.begin();
-               compIt != componentsVector.end(); ++compIt) {
-            GetComponent(installProjectName, *compIt);
+          for (std::string const& comp : componentsVector) {
+            GetComponent(installProjectName, comp);
           }
           componentInstall = true;
         }
@@ -610,11 +595,9 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
                     "- Install project: " << installProjectName << std::endl);
 
       // Run the installation for each component
-      std::vector<std::string>::iterator componentIt;
-      for (componentIt = componentsVector.begin();
-           componentIt != componentsVector.end(); ++componentIt) {
+      for (std::string const& component : componentsVector) {
         std::string tempInstallDirectory = baseTempInstallDirectory;
-        installComponent = *componentIt;
+        installComponent = component;
         if (componentInstall) {
           cmCPackLogger(cmCPackLog::LOG_OUTPUT, "-   Install component: "
                           << installComponent << std::endl);
@@ -627,8 +610,7 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
         cm.AddCMakePaths();
         cm.SetProgressCallback(cmCPackGeneratorProgress, this);
         cmGlobalGenerator gg(&cm);
-        CM_AUTO_PTR<cmMakefile> mf(
-          new cmMakefile(&gg, cm.GetCurrentSnapshot()));
+        cmMakefile mf(&gg, cm.GetCurrentSnapshot());
         if (!installSubDirectory.empty() && installSubDirectory != "/" &&
             installSubDirectory != ".") {
           tempInstallDirectory += installSubDirectory;
@@ -674,11 +656,11 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
           if (this->GetOption("CPACK_INSTALL_PREFIX")) {
             dir += this->GetOption("CPACK_INSTALL_PREFIX");
           }
-          mf->AddDefinition("CMAKE_INSTALL_PREFIX", dir.c_str());
+          mf.AddDefinition("CMAKE_INSTALL_PREFIX", dir.c_str());
 
           cmCPackLogger(
             cmCPackLog::LOG_DEBUG,
-            "- Using DESTDIR + CPACK_INSTALL_PREFIX... (mf->AddDefinition)"
+            "- Using DESTDIR + CPACK_INSTALL_PREFIX... (mf.AddDefinition)"
               << std::endl);
           cmCPackLogger(cmCPackLog::LOG_DEBUG,
                         "- Setting CMAKE_INSTALL_PREFIX to '" << dir << "'"
@@ -715,8 +697,8 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
             return 0;
           }
         } else {
-          mf->AddDefinition("CMAKE_INSTALL_PREFIX",
-                            tempInstallDirectory.c_str());
+          mf.AddDefinition("CMAKE_INSTALL_PREFIX",
+                           tempInstallDirectory.c_str());
 
           if (!cmsys::SystemTools::MakeDirectory(
                 tempInstallDirectory.c_str())) {
@@ -727,7 +709,7 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
           }
 
           cmCPackLogger(cmCPackLog::LOG_DEBUG,
-                        "- Using non-DESTDIR install... (mf->AddDefinition)"
+                        "- Using non-DESTDIR install... (mf.AddDefinition)"
                           << std::endl);
           cmCPackLogger(cmCPackLog::LOG_DEBUG,
                         "- Setting CMAKE_INSTALL_PREFIX to '"
@@ -735,19 +717,19 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
         }
 
         if (!buildConfig.empty()) {
-          mf->AddDefinition("BUILD_TYPE", buildConfig.c_str());
+          mf.AddDefinition("BUILD_TYPE", buildConfig.c_str());
         }
         std::string installComponentLowerCase =
           cmSystemTools::LowerCase(installComponent);
         if (installComponentLowerCase != "all") {
-          mf->AddDefinition("CMAKE_INSTALL_COMPONENT",
-                            installComponent.c_str());
+          mf.AddDefinition("CMAKE_INSTALL_COMPONENT",
+                           installComponent.c_str());
         }
 
         // strip on TRUE, ON, 1, one or several file names, but not on
         // FALSE, OFF, 0 and an empty string
         if (!cmSystemTools::IsOff(this->GetOption("CPACK_STRIP_FILES"))) {
-          mf->AddDefinition("CMAKE_INSTALL_DO_STRIP", "1");
+          mf.AddDefinition("CMAKE_INSTALL_DO_STRIP", "1");
         }
         // Remember the list of files before installation
         // of the current component (if we are in component install)
@@ -767,7 +749,7 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
         // If CPack was asked to warn on ABSOLUTE INSTALL DESTINATION
         // then forward request to cmake_install.cmake script
         if (this->IsOn("CPACK_WARN_ON_ABSOLUTE_INSTALL_DESTINATION")) {
-          mf->AddDefinition("CMAKE_WARN_ON_ABSOLUTE_INSTALL_DESTINATION", "1");
+          mf.AddDefinition("CMAKE_WARN_ON_ABSOLUTE_INSTALL_DESTINATION", "1");
         }
         // If current CPack generator does support
         // ABSOLUTE INSTALL DESTINATION or CPack has been asked for
@@ -775,18 +757,17 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
         // as soon as it occurs (before installing file)
         if (!SupportsAbsoluteDestination() ||
             this->IsOn("CPACK_ERROR_ON_ABSOLUTE_INSTALL_DESTINATION")) {
-          mf->AddDefinition("CMAKE_ERROR_ON_ABSOLUTE_INSTALL_DESTINATION",
-                            "1");
+          mf.AddDefinition("CMAKE_ERROR_ON_ABSOLUTE_INSTALL_DESTINATION", "1");
         }
         // do installation
-        int res = mf->ReadListFile(installFile.c_str());
+        int res = mf.ReadListFile(installFile.c_str());
         // forward definition of CMAKE_ABSOLUTE_DESTINATION_FILES
         // to CPack (may be used by generators like CPack RPM or DEB)
         // in order to transparently handle ABSOLUTE PATH
-        if (mf->GetDefinition("CMAKE_ABSOLUTE_DESTINATION_FILES")) {
-          mf->AddDefinition(
+        if (mf.GetDefinition("CMAKE_ABSOLUTE_DESTINATION_FILES")) {
+          mf.AddDefinition(
             "CPACK_ABSOLUTE_DESTINATION_FILES",
-            mf->GetDefinition("CMAKE_ABSOLUTE_DESTINATION_FILES"));
+            mf.GetDefinition("CMAKE_ABSOLUTE_DESTINATION_FILES"));
         }
 
         // Now rebuild the list of files after installation
@@ -820,13 +801,12 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
           }
         }
 
-        if (CM_NULLPTR !=
-            mf->GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES")) {
+        if (nullptr != mf.GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES")) {
           if (!absoluteDestFiles.empty()) {
             absoluteDestFiles += ";";
           }
           absoluteDestFiles +=
-            mf->GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES");
+            mf.GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES");
           cmCPackLogger(cmCPackLog::LOG_DEBUG,
                         "Got some ABSOLUTE DESTINATION FILES: "
                           << absoluteDestFiles << std::endl);
@@ -835,18 +815,18 @@ int cmCPackGenerator::InstallProjectViaInstallCMakeProjects(
             std::string absoluteDestFileComponent =
               std::string("CPACK_ABSOLUTE_DESTINATION_FILES") + "_" +
               GetComponentInstallDirNameSuffix(installComponent);
-            if (CM_NULLPTR != this->GetOption(absoluteDestFileComponent)) {
+            if (nullptr != this->GetOption(absoluteDestFileComponent)) {
               std::string absoluteDestFilesListComponent =
                 this->GetOption(absoluteDestFileComponent);
               absoluteDestFilesListComponent += ";";
               absoluteDestFilesListComponent +=
-                mf->GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES");
+                mf.GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES");
               this->SetOption(absoluteDestFileComponent,
                               absoluteDestFilesListComponent.c_str());
             } else {
               this->SetOption(
                 absoluteDestFileComponent,
-                mf->GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES"));
+                mf.GetDefinition("CPACK_ABSOLUTE_DESTINATION_FILES"));
             }
           }
         }
@@ -982,7 +962,7 @@ int cmCPackGenerator::DoPackage()
 
   /* Prepare checksum algorithm*/
   const char* algo = this->GetOption("CPACK_PACKAGE_CHECKSUM");
-  CM_AUTO_PTR<cmCryptoHash> crypto = cmCryptoHash::New(algo ? algo : "");
+  std::unique_ptr<cmCryptoHash> crypto = cmCryptoHash::New(algo ? algo : "");
 
   /*
    * Copy the generated packages to final destination
@@ -992,12 +972,11 @@ int cmCPackGenerator::DoPackage()
    */
   cmCPackLogger(cmCPackLog::LOG_VERBOSE, "Copying final package(s) ["
                   << packageFileNames.size() << "]:" << std::endl);
-  std::vector<std::string>::iterator it;
   /* now copy package one by one */
-  for (it = packageFileNames.begin(); it != packageFileNames.end(); ++it) {
+  for (std::string const& pkgFileName : packageFileNames) {
     std::string tmpPF(this->GetOption("CPACK_OUTPUT_FILE_PREFIX"));
-    std::string filename(cmSystemTools::GetFilenameName(*it));
-    tempPackageFileName = it->c_str();
+    std::string filename(cmSystemTools::GetFilenameName(pkgFileName));
+    tempPackageFileName = pkgFileName.c_str();
     tmpPF += "/" + filename;
     const char* packageFileName = tmpPF.c_str();
     cmCPackLogger(cmCPackLog::LOG_DEBUG, "Copy final package(s): "
@@ -1016,10 +995,9 @@ int cmCPackGenerator::DoPackage()
                     << packageFileName << " generated." << std::endl);
 
     /* Generate checksum file */
-    if (crypto.get() != CM_NULLPTR) {
+    if (crypto) {
       std::string hashFile(this->GetOption("CPACK_OUTPUT_FILE_PREFIX"));
-      hashFile +=
-        "/" + filename.substr(0, filename.rfind(this->GetOutputExtension()));
+      hashFile += "/" + filename;
       hashFile += "." + cmSystemTools::LowerCase(algo);
       cmsys::ofstream outF(hashFile.c_str());
       if (!outF) {
@@ -1225,7 +1203,7 @@ int cmCPackGenerator::PrepareGroupingKind()
   std::string groupingType;
 
   // Second way to specify grouping
-  if (CM_NULLPTR != this->GetOption("CPACK_COMPONENTS_GROUPING")) {
+  if (nullptr != this->GetOption("CPACK_COMPONENTS_GROUPING")) {
     groupingType = this->GetOption("CPACK_COMPONENTS_GROUPING");
   }
 
@@ -1407,7 +1385,7 @@ cmCPackComponent* cmCPackGenerator::GetComponent(
       component->Group = GetComponentGroup(projectName, groupName);
       component->Group->Components.push_back(component);
     } else {
-      component->Group = CM_NULLPTR;
+      component->Group = nullptr;
     }
 
     const char* description = this->GetOption(macroPrefix + "_DESCRIPTION");
@@ -1421,10 +1399,9 @@ cmCPackComponent* cmCPackGenerator::GetComponent(
       std::vector<std::string> installTypesVector;
       cmSystemTools::ExpandListArgument(installTypes, installTypesVector);
       std::vector<std::string>::iterator installTypesIt;
-      for (installTypesIt = installTypesVector.begin();
-           installTypesIt != installTypesVector.end(); ++installTypesIt) {
+      for (std::string const& installType : installTypesVector) {
         component->InstallationTypes.push_back(
-          this->GetInstallationType(projectName, *installTypesIt));
+          this->GetInstallationType(projectName, installType));
       }
     }
 
@@ -1434,9 +1411,8 @@ cmCPackComponent* cmCPackGenerator::GetComponent(
       std::vector<std::string> dependsVector;
       cmSystemTools::ExpandListArgument(depends, dependsVector);
       std::vector<std::string>::iterator dependIt;
-      for (dependIt = dependsVector.begin(); dependIt != dependsVector.end();
-           ++dependIt) {
-        cmCPackComponent* child = GetComponent(projectName, *dependIt);
+      for (std::string const& depend : dependsVector) {
+        cmCPackComponent* child = GetComponent(projectName, depend);
         component->Dependencies.push_back(child);
         child->ReverseDependencies.push_back(component);
       }
@@ -1475,7 +1451,7 @@ cmCPackComponentGroup* cmCPackGenerator::GetComponentGroup(
       group->ParentGroup = GetComponentGroup(projectName, parentGroupName);
       group->ParentGroup->Subgroups.push_back(group);
     } else {
-      group->ParentGroup = CM_NULLPTR;
+      group->ParentGroup = nullptr;
     }
   }
   return group;
diff --git a/Source/CPack/cmCPackGenerator.h b/Source/CPack/cmCPackGenerator.h
index 45777fa05..4e3a6e038 100644
--- a/Source/CPack/cmCPackGenerator.h
+++ b/Source/CPack/cmCPackGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackGenerator_h
 #define cmCPackGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <map>
 #include <sstream>
@@ -105,7 +105,7 @@ protected:
   cmInstalledFile const* GetInstalledFile(std::string const& name) const;
 
   virtual const char* GetOutputExtension() { return ".cpack"; }
-  virtual const char* GetOutputPostfix() { return CM_NULLPTR; }
+  virtual const char* GetOutputPostfix() { return nullptr; }
 
   /**
    * Prepare requested grouping kind from CPACK_xxx vars
@@ -299,7 +299,7 @@ private:
 
 #define cmCPackTypeMacro(klass, superclass)                                   \
   typedef superclass Superclass;                                              \
-  const char* GetNameOfClass() CM_OVERRIDE { return #klass; }                 \
+  const char* GetNameOfClass() override { return #klass; }                    \
   static cmCPackGenerator* CreateGenerator() { return new klass; }            \
   class cmCPackTypeMacro_UseTrailingSemicolon
 
diff --git a/Source/CPack/cmCPackGeneratorFactory.cxx b/Source/CPack/cmCPackGeneratorFactory.cxx
index 31f48c7e3..4b81bbc5f 100644
--- a/Source/CPack/cmCPackGeneratorFactory.cxx
+++ b/Source/CPack/cmCPackGeneratorFactory.cxx
@@ -2,13 +2,16 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCPackGeneratorFactory.h"
 
-#include "cmConfigure.h"
 #include <ostream>
 #include <utility>
 
 #include "IFW/cmCPackIFWGenerator.h"
 #include "cmAlgorithms.h"
 #include "cmCPack7zGenerator.h"
+#ifdef HAVE_FREEBSD_PKG
+#include "cmCPackFreeBSDGenerator.h"
+#endif
+#include "cmCPackDebGenerator.h"
 #include "cmCPackGenerator.h"
 #include "cmCPackLog.h"
 #include "cmCPackNSISGenerator.h"
@@ -34,7 +37,6 @@
 
 #if !defined(_WIN32) && !defined(__QNXNTO__) && !defined(__BEOS__) &&         \
   !defined(__HAIKU__)
-#include "cmCPackDebGenerator.h"
 #include "cmCPackRPMGenerator.h"
 #endif
 
@@ -99,6 +101,10 @@ cmCPackGeneratorFactory::cmCPackGeneratorFactory()
     this->RegisterGenerator("TZ", "Tar Compress compression",
                             cmCPackTarCompressGenerator::CreateGenerator);
   }
+  if (cmCPackDebGenerator::CanGenerate()) {
+    this->RegisterGenerator("DEB", "Debian packages",
+                            cmCPackDebGenerator::CreateGenerator);
+  }
 #ifdef __APPLE__
   if (cmCPackDragNDropGenerator::CanGenerate()) {
     this->RegisterGenerator("DragNDrop", "Mac OSX Drag And Drop",
@@ -123,15 +129,17 @@ cmCPackGeneratorFactory::cmCPackGeneratorFactory()
 #endif
 #if !defined(_WIN32) && !defined(__QNXNTO__) && !defined(__BEOS__) &&         \
   !defined(__HAIKU__)
-  if (cmCPackDebGenerator::CanGenerate()) {
-    this->RegisterGenerator("DEB", "Debian packages",
-                            cmCPackDebGenerator::CreateGenerator);
-  }
   if (cmCPackRPMGenerator::CanGenerate()) {
     this->RegisterGenerator("RPM", "RPM packages",
                             cmCPackRPMGenerator::CreateGenerator);
   }
 #endif
+#ifdef HAVE_FREEBSD_PKG
+  if (cmCPackFreeBSDGenerator::CanGenerate()) {
+    this->RegisterGenerator("FREEBSD", "FreeBSD pkg(8) packages",
+                            cmCPackFreeBSDGenerator::CreateGenerator);
+  }
+#endif
 }
 
 cmCPackGeneratorFactory::~cmCPackGeneratorFactory()
@@ -144,7 +152,7 @@ cmCPackGenerator* cmCPackGeneratorFactory::NewGenerator(
 {
   cmCPackGenerator* gen = this->NewGeneratorInternal(name);
   if (!gen) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   this->Generators.push_back(gen);
   gen->SetLogger(this->Logger);
@@ -157,7 +165,7 @@ cmCPackGenerator* cmCPackGeneratorFactory::NewGeneratorInternal(
   cmCPackGeneratorFactory::t_GeneratorCreatorsMap::iterator it =
     this->GeneratorCreators.find(name);
   if (it == this->GeneratorCreators.end()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return (it->second)();
 }
diff --git a/Source/CPack/cmCPackLog.cxx b/Source/CPack/cmCPackLog.cxx
index 5c7123959..a3ca4b590 100644
--- a/Source/CPack/cmCPackLog.cxx
+++ b/Source/CPack/cmCPackLog.cxx
@@ -2,7 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCPackLog.h"
 
-#include "cmConfigure.h"
 #include <iostream>
 
 #include "cmGeneratedFileStream.h"
@@ -19,13 +18,13 @@ cmCPackLog::cmCPackLog()
   this->DefaultOutput = &std::cout;
   this->DefaultError = &std::cerr;
 
-  this->LogOutput = CM_NULLPTR;
+  this->LogOutput = nullptr;
   this->LogOutputCleanup = false;
 }
 
 cmCPackLog::~cmCPackLog()
 {
-  this->SetLogOutputStream(CM_NULLPTR);
+  this->SetLogOutputStream(nullptr);
 }
 
 void cmCPackLog::SetLogOutputStream(std::ostream* os)
@@ -39,13 +38,13 @@ void cmCPackLog::SetLogOutputStream(std::ostream* os)
 
 bool cmCPackLog::SetLogOutputFile(const char* fname)
 {
-  cmGeneratedFileStream* cg = CM_NULLPTR;
+  cmGeneratedFileStream* cg = nullptr;
   if (fname) {
     cg = new cmGeneratedFileStream(fname);
   }
   if (cg && !*cg) {
     delete cg;
-    cg = CM_NULLPTR;
+    cg = nullptr;
   }
   this->SetLogOutputStream(cg);
   if (!cg) {
diff --git a/Source/CPack/cmCPackNSISGenerator.cxx b/Source/CPack/cmCPackNSISGenerator.cxx
index 9697a3832..ddf104c93 100644
--- a/Source/CPack/cmCPackNSISGenerator.cxx
+++ b/Source/CPack/cmCPackNSISGenerator.cxx
@@ -59,11 +59,10 @@ int cmCPackNSISGenerator::PackageFiles()
   std::string nsisInstallOptions = nsisFileName + "/NSIS.InstallOptions.ini";
   nsisFileName += "/project.nsi";
   std::ostringstream str;
-  std::vector<std::string>::const_iterator it;
-  for (it = files.begin(); it != files.end(); ++it) {
+  for (std::string const& file : files) {
     std::string outputDir = "$INSTDIR";
     std::string fileN =
-      cmSystemTools::RelativePath(toplevel.c_str(), it->c_str());
+      cmSystemTools::RelativePath(toplevel.c_str(), file.c_str());
     if (!this->Components.empty()) {
       const std::string::size_type pos = fileN.find('/');
 
@@ -87,12 +86,11 @@ int cmCPackNSISGenerator::PackageFiles()
   this->SetOptionIfNotSet("CPACK_NSIS_DELETE_FILES", str.str().c_str());
   std::vector<std::string> dirs;
   this->GetListOfSubdirectories(toplevel.c_str(), dirs);
-  std::vector<std::string>::const_iterator sit;
   std::ostringstream dstr;
-  for (sit = dirs.begin(); sit != dirs.end(); ++sit) {
+  for (std::string const& dir : dirs) {
     std::string componentName;
     std::string fileN =
-      cmSystemTools::RelativePath(toplevel.c_str(), sit->c_str());
+      cmSystemTools::RelativePath(toplevel.c_str(), dir.c_str());
     if (fileN.empty()) {
       continue;
     }
@@ -205,65 +203,57 @@ int cmCPackNSISGenerator::PackageFiles()
     // in a vector based on the indices, and print them in that order.
     std::vector<cmCPackInstallationType*> installTypes(
       this->InstallationTypes.size());
-    std::map<std::string, cmCPackInstallationType>::iterator installTypeIt;
-    for (installTypeIt = this->InstallationTypes.begin();
-         installTypeIt != this->InstallationTypes.end(); ++installTypeIt) {
-      installTypes[installTypeIt->second.Index - 1] = &installTypeIt->second;
-    }
-    std::vector<cmCPackInstallationType*>::iterator installTypeIt2;
-    for (installTypeIt2 = installTypes.begin();
-         installTypeIt2 != installTypes.end(); ++installTypeIt2) {
+    for (auto& installType : this->InstallationTypes) {
+      installTypes[installType.second.Index - 1] = &installType.second;
+    }
+    for (cmCPackInstallationType* installType : installTypes) {
       installTypesCode += "InstType \"";
-      installTypesCode += (*installTypeIt2)->DisplayName;
+      installTypesCode += installType->DisplayName;
       installTypesCode += "\"\n";
     }
 
     // Create installation groups first
-    std::map<std::string, cmCPackComponentGroup>::iterator groupIt;
-    for (groupIt = this->ComponentGroups.begin();
-         groupIt != this->ComponentGroups.end(); ++groupIt) {
-      if (groupIt->second.ParentGroup == CM_NULLPTR) {
+    for (auto& group : this->ComponentGroups) {
+      if (group.second.ParentGroup == nullptr) {
         componentCode +=
-          this->CreateComponentGroupDescription(&groupIt->second, macrosOut);
+          this->CreateComponentGroupDescription(&group.second, macrosOut);
       }
 
       // Add the group description, if any.
-      if (!groupIt->second.Description.empty()) {
+      if (!group.second.Description.empty()) {
         groupDescriptions += "  !insertmacro MUI_DESCRIPTION_TEXT ${" +
-          groupIt->first + "} \"" +
-          this->TranslateNewlines(groupIt->second.Description) + "\"\n";
+          group.first + "} \"" +
+          this->TranslateNewlines(group.second.Description) + "\"\n";
       }
     }
 
     // Create the remaining components, which aren't associated with groups.
-    std::map<std::string, cmCPackComponent>::iterator compIt;
-    for (compIt = this->Components.begin(); compIt != this->Components.end();
-         ++compIt) {
-      if (compIt->second.Files.empty()) {
+    for (auto& comp : this->Components) {
+      if (comp.second.Files.empty()) {
         // NSIS cannot cope with components that have no files.
         continue;
       }
 
       anyDownloadedComponents =
-        anyDownloadedComponents || compIt->second.IsDownloaded;
+        anyDownloadedComponents || comp.second.IsDownloaded;
 
-      if (!compIt->second.Group) {
+      if (!comp.second.Group) {
         componentCode +=
-          this->CreateComponentDescription(&compIt->second, macrosOut);
+          this->CreateComponentDescription(&comp.second, macrosOut);
       }
 
       // Add this component to the various section lists.
       sectionList += "  !insertmacro \"${MacroName}\" \"";
-      sectionList += compIt->first;
+      sectionList += comp.first;
       sectionList += "\"\n";
-      selectedVarsList += "Var " + compIt->first + "_selected\n";
-      selectedVarsList += "Var " + compIt->first + "_was_installed\n";
+      selectedVarsList += "Var " + comp.first + "_selected\n";
+      selectedVarsList += "Var " + comp.first + "_was_installed\n";
 
       // Add the component description, if any.
-      if (!compIt->second.Description.empty()) {
+      if (!comp.second.Description.empty()) {
         componentDescriptions += "  !insertmacro MUI_DESCRIPTION_TEXT ${" +
-          compIt->first + "} \"" +
-          this->TranslateNewlines(compIt->second.Description) + "\"\n";
+          comp.first + "} \"" +
+          this->TranslateNewlines(comp.second.Description) + "\"\n";
       }
     }
 
@@ -313,7 +303,7 @@ int cmCPackNSISGenerator::PackageFiles()
   int retVal = 1;
   bool res =
     cmSystemTools::RunSingleCommand(nsisCmd.c_str(), &output, &output, &retVal,
-                                    CM_NULLPTR, this->GeneratorVerbose, 0);
+                                    nullptr, this->GeneratorVerbose, 0);
   if (!res || retVal) {
     cmGeneratedFileStream ofs(tmpFile.c_str());
     ofs << "# Run command: " << nsisCmd << std::endl
@@ -337,7 +327,7 @@ int cmCPackNSISGenerator::InitializeInternal()
       "NSIS Generator cannot work with CPACK_INCLUDE_TOPLEVEL_DIRECTORY set. "
       "This option will be reset to 0 (for this generator only)."
         << std::endl);
-    this->SetOption("CPACK_INCLUDE_TOPLEVEL_DIRECTORY", CM_NULLPTR);
+    this->SetOption("CPACK_INCLUDE_TOPLEVEL_DIRECTORY", nullptr);
   }
 
   cmCPackLogger(cmCPackLog::LOG_DEBUG, "cmCPackNSISGenerator::Initialize()"
@@ -412,7 +402,7 @@ int cmCPackNSISGenerator::InitializeInternal()
   int retVal = 1;
   bool resS =
     cmSystemTools::RunSingleCommand(nsisCmd.c_str(), &output, &output, &retVal,
-                                    CM_NULLPTR, this->GeneratorVerbose, 0);
+                                    nullptr, this->GeneratorVerbose, 0);
   cmsys::RegularExpression versionRex("v([0-9]+.[0-9]+)");
   cmsys::RegularExpression versionRexCVS("v(.*)\\.cvs");
   if (!resS || retVal ||
@@ -463,11 +453,9 @@ int cmCPackNSISGenerator::InitializeInternal()
 
     cmSystemTools::ExpandListArgument(cpackPackageDeskTopLinks,
                                       cpackPackageDesktopLinksVector);
-    for (std::vector<std::string>::iterator i =
-           cpackPackageDesktopLinksVector.begin();
-         i != cpackPackageDesktopLinksVector.end(); ++i) {
+    for (std::string const& cpdl : cpackPackageDesktopLinksVector) {
       cmCPackLogger(cmCPackLog::LOG_DEBUG,
-                    "CPACK_CREATE_DESKTOP_LINKS: " << *i << std::endl);
+                    "CPACK_CREATE_DESKTOP_LINKS: " << cpdl << std::endl);
     }
   } else {
     cmCPackLogger(cmCPackLog::LOG_DEBUG, "CPACK_CREATE_DESKTOP_LINKS: "
@@ -647,11 +635,9 @@ std::string cmCPackNSISGenerator::CreateComponentDescription(
     componentCode += "  SectionIn RO\n";
   } else if (!component->InstallationTypes.empty()) {
     std::ostringstream out;
-    std::vector<cmCPackInstallationType*>::iterator installTypeIter;
-    for (installTypeIter = component->InstallationTypes.begin();
-         installTypeIter != component->InstallationTypes.end();
-         ++installTypeIter) {
-      out << " " << (*installTypeIter)->Index;
+    for (cmCPackInstallationType const* installType :
+         component->InstallationTypes) {
+      out << " " << installType->Index;
     }
     componentCode += "  SectionIn" + out.str() + "\n";
   }
@@ -730,19 +716,17 @@ std::string cmCPackNSISGenerator::CreateComponentDescription(
     unsigned long totalSize = 0;
     { // the scope is needed for cmGeneratedFileStream
       cmGeneratedFileStream out(zipListFileName.c_str());
-      std::vector<std::string>::iterator fileIt;
-      for (fileIt = component->Files.begin(); fileIt != component->Files.end();
-           ++fileIt) {
+      for (std::string const& file : component->Files) {
         if (needQuotesInFile) {
           out << "\"";
         }
-        out << *fileIt;
+        out << file;
         if (needQuotesInFile) {
           out << "\"";
         }
         out << std::endl;
 
-        totalSize += cmSystemTools::FileLength(dirName + *fileIt);
+        totalSize += cmSystemTools::FileLength(dirName + file);
       }
     }
 
@@ -798,17 +782,14 @@ std::string cmCPackNSISGenerator::CreateComponentDescription(
   macrosOut << "!macro Remove_${" << component->Name << "}\n";
   macrosOut << "  IntCmp $" << component->Name << "_was_installed 0 noremove_"
             << component->Name << "\n";
-  std::vector<std::string>::iterator pathIt;
   std::string path;
-  for (pathIt = component->Files.begin(); pathIt != component->Files.end();
-       ++pathIt) {
-    path = *pathIt;
+  for (std::string const& pathIt : component->Files) {
+    path = pathIt;
     std::replace(path.begin(), path.end(), '/', '\\');
     macrosOut << "  Delete \"" << componentOutputDir << "\\" << path << "\"\n";
   }
-  for (pathIt = component->Directories.begin();
-       pathIt != component->Directories.end(); ++pathIt) {
-    path = *pathIt;
+  for (std::string const& pathIt : component->Directories) {
+    path = pathIt;
     std::replace(path.begin(), path.end(), '/', '\\');
     macrosOut << "  RMDir \"" << componentOutputDir << "\\" << path << "\"\n";
   }
@@ -841,17 +822,14 @@ std::string cmCPackNSISGenerator::CreateSelectionDependenciesDescription(
   visited.insert(component);
 
   std::ostringstream out;
-  std::vector<cmCPackComponent*>::iterator dependIt;
-  for (dependIt = component->Dependencies.begin();
-       dependIt != component->Dependencies.end(); ++dependIt) {
+  for (cmCPackComponent* depend : component->Dependencies) {
     // Write NSIS code to select this dependency
-    out << "  SectionGetFlags ${" << (*dependIt)->Name << "} $0\n";
+    out << "  SectionGetFlags ${" << depend->Name << "} $0\n";
     out << "  IntOp $0 $0 | ${SF_SELECTED}\n";
-    out << "  SectionSetFlags ${" << (*dependIt)->Name << "} $0\n";
-    out << "  IntOp $" << (*dependIt)->Name
-        << "_selected 0 + ${SF_SELECTED}\n";
+    out << "  SectionSetFlags ${" << depend->Name << "} $0\n";
+    out << "  IntOp $" << depend->Name << "_selected 0 + ${SF_SELECTED}\n";
     // Recurse
-    out << CreateSelectionDependenciesDescription(*dependIt, visited).c_str();
+    out << CreateSelectionDependenciesDescription(depend, visited).c_str();
   }
 
   return out.str();
@@ -867,19 +845,16 @@ std::string cmCPackNSISGenerator::CreateDeselectionDependenciesDescription(
   visited.insert(component);
 
   std::ostringstream out;
-  std::vector<cmCPackComponent*>::iterator dependIt;
-  for (dependIt = component->ReverseDependencies.begin();
-       dependIt != component->ReverseDependencies.end(); ++dependIt) {
+  for (cmCPackComponent* depend : component->ReverseDependencies) {
     // Write NSIS code to deselect this dependency
-    out << "  SectionGetFlags ${" << (*dependIt)->Name << "} $0\n";
+    out << "  SectionGetFlags ${" << depend->Name << "} $0\n";
     out << "  IntOp $1 ${SF_SELECTED} ~\n";
     out << "  IntOp $0 $0 & $1\n";
-    out << "  SectionSetFlags ${" << (*dependIt)->Name << "} $0\n";
-    out << "  IntOp $" << (*dependIt)->Name << "_selected 0 + 0\n";
+    out << "  SectionSetFlags ${" << depend->Name << "} $0\n";
+    out << "  IntOp $" << depend->Name << "_selected 0 + 0\n";
 
     // Recurse
-    out
-      << CreateDeselectionDependenciesDescription(*dependIt, visited).c_str();
+    out << CreateDeselectionDependenciesDescription(depend, visited).c_str();
   }
 
   return out.str();
@@ -903,20 +878,16 @@ std::string cmCPackNSISGenerator::CreateComponentGroupDescription(
     code += "\"" + group->DisplayName + "\" " + group->Name + "\n";
   }
 
-  std::vector<cmCPackComponentGroup*>::iterator groupIt;
-  for (groupIt = group->Subgroups.begin(); groupIt != group->Subgroups.end();
-       ++groupIt) {
-    code += this->CreateComponentGroupDescription(*groupIt, macrosOut);
+  for (cmCPackComponentGroup* g : group->Subgroups) {
+    code += this->CreateComponentGroupDescription(g, macrosOut);
   }
 
-  std::vector<cmCPackComponent*>::iterator comp;
-  for (comp = group->Components.begin(); comp != group->Components.end();
-       ++comp) {
-    if ((*comp)->Files.empty()) {
+  for (cmCPackComponent* comp : group->Components) {
+    if (comp->Files.empty()) {
       continue;
     }
 
-    code += this->CreateComponentDescription(*comp, macrosOut);
+    code += this->CreateComponentDescription(comp, macrosOut);
   }
   code += "SectionGroupEnd\n";
   return code;
diff --git a/Source/CPack/cmCPackNSISGenerator.h b/Source/CPack/cmCPackNSISGenerator.h
index 77be3256d..fc9ad9ace 100644
--- a/Source/CPack/cmCPackNSISGenerator.h
+++ b/Source/CPack/cmCPackNSISGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackNSISGenerator_h
 #define cmCPackNSISGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCPackGenerator.h"
 
@@ -34,22 +34,22 @@ public:
    * Construct generator
    */
   cmCPackNSISGenerator(bool nsis64 = false);
-  ~cmCPackNSISGenerator() CM_OVERRIDE;
+  ~cmCPackNSISGenerator() override;
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
+  int InitializeInternal() override;
   void CreateMenuLinks(std::ostream& str, std::ostream& deleteStr);
-  int PackageFiles() CM_OVERRIDE;
-  const char* GetOutputExtension() CM_OVERRIDE { return ".exe"; }
-  const char* GetOutputPostfix() CM_OVERRIDE { return "win32"; }
+  int PackageFiles() override;
+  const char* GetOutputExtension() override { return ".exe"; }
+  const char* GetOutputPostfix() override { return "win32"; }
 
   bool GetListOfSubdirectories(const char* dir,
                                std::vector<std::string>& dirs);
 
-  enum cmCPackGenerator::CPackSetDestdirSupport SupportsSetDestdir() const
-    CM_OVERRIDE;
-  bool SupportsAbsoluteDestination() const CM_OVERRIDE;
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  enum cmCPackGenerator::CPackSetDestdirSupport SupportsSetDestdir()
+    const override;
+  bool SupportsAbsoluteDestination() const override;
+  bool SupportsComponentInstallation() const override;
 
   /// Produce a string that contains the NSIS code to describe a
   /// particular component. Any added macros will be emitted via
diff --git a/Source/CPack/cmCPackOSXX11Generator.cxx b/Source/CPack/cmCPackOSXX11Generator.cxx
index 8ea88a87a..8d3c40c5c 100644
--- a/Source/CPack/cmCPackOSXX11Generator.cxx
+++ b/Source/CPack/cmCPackOSXX11Generator.cxx
@@ -144,8 +144,8 @@ int cmCPackOSXX11Generator::PackageFiles()
   tmpFile += "/hdiutilOutput.log";
   std::ostringstream dmgCmd;
   dmgCmd << "\"" << this->GetOption("CPACK_INSTALLER_PROGRAM_DISK_IMAGE")
-         << "\" create -ov -format UDZO -srcfolder \"" << diskImageDirectory
-         << "\" \"" << packageFileNames[0] << "\"";
+         << "\" create -ov -fs HFS+ -format UDZO -srcfolder \""
+         << diskImageDirectory << "\" \"" << packageFileNames[0] << "\"";
   cmCPackLogger(cmCPackLog::LOG_VERBOSE, "Compress disk image using command: "
                   << dmgCmd.str() << std::endl);
   // since we get random dashboard failures with this one
@@ -154,9 +154,9 @@ int cmCPackOSXX11Generator::PackageFiles()
   int numTries = 10;
   bool res = false;
   while (numTries > 0) {
-    res =
-      cmSystemTools::RunSingleCommand(dmgCmd.str().c_str(), &output, &output,
-                                      &retVal, 0, this->GeneratorVerbose, 0);
+    res = cmSystemTools::RunSingleCommand(dmgCmd.str().c_str(), &output,
+                                          &output, &retVal, nullptr,
+                                          this->GeneratorVerbose, 0);
     if (res && !retVal) {
       numTries = -1;
       break;
diff --git a/Source/CPack/cmCPackOSXX11Generator.h b/Source/CPack/cmCPackOSXX11Generator.h
index 0eebc6dd1..a6461c854 100644
--- a/Source/CPack/cmCPackOSXX11Generator.h
+++ b/Source/CPack/cmCPackOSXX11Generator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackOSXX11Generator_h
 #define cmCPackOSXX11Generator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
@@ -23,13 +23,13 @@ public:
    * Construct generator
    */
   cmCPackOSXX11Generator();
-  virtual ~cmCPackOSXX11Generator();
+  ~cmCPackOSXX11Generator() override;
 
 protected:
-  virtual int InitializeInternal() CM_OVERRIDE;
-  int PackageFiles() CM_OVERRIDE;
-  const char* GetPackagingInstallPrefix() CM_OVERRIDE;
-  const char* GetOutputExtension() CM_OVERRIDE { return ".dmg"; }
+  virtual int InitializeInternal() override;
+  int PackageFiles() override;
+  const char* GetPackagingInstallPrefix() override;
+  const char* GetOutputExtension() override { return ".dmg"; }
 
   // bool CopyCreateResourceFile(const std::string& name,
   //                            const std::string& dir);
diff --git a/Source/CPack/cmCPackPKGGenerator.cxx b/Source/CPack/cmCPackPKGGenerator.cxx
index 70ae267fb..4f5b2a05a 100644
--- a/Source/CPack/cmCPackPKGGenerator.cxx
+++ b/Source/CPack/cmCPackPKGGenerator.cxx
@@ -42,9 +42,9 @@ std::string cmCPackPKGGenerator::GetPackageName(
     out << cmSystemTools::GetFilenameWithoutLastExtension(packagesDir) << "-"
         << component.Name << ".pkg";
     return out.str();
-  } else {
-    return component.ArchiveFile + ".pkg";
   }
+
+  return component.ArchiveFile + ".pkg";
 }
 
 void cmCPackPKGGenerator::WriteDistributionFile(const char* metapackageFile)
@@ -70,7 +70,7 @@ void cmCPackPKGGenerator::WriteDistributionFile(const char* metapackageFile)
   std::map<std::string, cmCPackComponentGroup>::iterator groupIt;
   for (groupIt = this->ComponentGroups.begin();
        groupIt != this->ComponentGroups.end(); ++groupIt) {
-    if (groupIt->second.ParentGroup == 0) {
+    if (groupIt->second.ParentGroup == nullptr) {
       CreateChoiceOutline(groupIt->second, xout);
     }
   }
diff --git a/Source/CPack/cmCPackPKGGenerator.h b/Source/CPack/cmCPackPKGGenerator.h
index f873c5936..69286ffde 100644
--- a/Source/CPack/cmCPackPKGGenerator.h
+++ b/Source/CPack/cmCPackPKGGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackPKGGenerator_h
 #define cmCPackPKGGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <set>
 #include <sstream>
@@ -27,13 +27,13 @@ public:
    * Construct generator
    */
   cmCPackPKGGenerator();
-  virtual ~cmCPackPKGGenerator();
+  ~cmCPackPKGGenerator() override;
 
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  bool SupportsComponentInstallation() const override;
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
-  const char* GetOutputPostfix() CM_OVERRIDE { return "darwin"; }
+  int InitializeInternal() override;
+  const char* GetOutputPostfix() override { return "darwin"; }
 
   // Copies or creates the resource file with the given name to the
   // package or package staging directory dirName. The variable
diff --git a/Source/CPack/cmCPackPackageMakerGenerator.cxx b/Source/CPack/cmCPackPackageMakerGenerator.cxx
index 8db7cfb3d..dbcb02231 100644
--- a/Source/CPack/cmCPackPackageMakerGenerator.cxx
+++ b/Source/CPack/cmCPackPackageMakerGenerator.cxx
@@ -275,8 +275,9 @@ int cmCPackPackageMakerGenerator::PackageFiles()
     if (this->PackageMakerVersion > 2.0) {
       pkgCmd << " -v";
     }
-    if (!RunPackageMaker(pkgCmd.str().c_str(), packageDirFileName.c_str()))
+    if (!RunPackageMaker(pkgCmd.str().c_str(), packageDirFileName.c_str())) {
       return 0;
+    }
   } else {
     // We have built the package in place. Generate the
     // distribution.dist file to describe it for the installer.
@@ -287,16 +288,16 @@ int cmCPackPackageMakerGenerator::PackageFiles()
   tmpFile += "/hdiutilOutput.log";
   std::ostringstream dmgCmd;
   dmgCmd << "\"" << this->GetOption("CPACK_INSTALLER_PROGRAM_DISK_IMAGE")
-         << "\" create -ov -format UDZO -srcfolder \"" << packageDirFileName
-         << "\" \"" << packageFileNames[0] << "\"";
+         << "\" create -ov -fs HFS+ -format UDZO -srcfolder \""
+         << packageDirFileName << "\" \"" << packageFileNames[0] << "\"";
   std::string output;
   int retVal = 1;
   int numTries = 10;
   bool res = false;
   while (numTries > 0) {
-    res =
-      cmSystemTools::RunSingleCommand(dmgCmd.str().c_str(), &output, &output,
-                                      &retVal, 0, this->GeneratorVerbose, 0);
+    res = cmSystemTools::RunSingleCommand(dmgCmd.str().c_str(), &output,
+                                          &output, &retVal, nullptr,
+                                          this->GeneratorVerbose, 0);
     if (res && !retVal) {
       numTries = -1;
       break;
@@ -466,7 +467,7 @@ bool cmCPackPackageMakerGenerator::RunPackageMaker(const char* command,
   std::string output;
   int retVal = 1;
   bool res = cmSystemTools::RunSingleCommand(
-    command, &output, &output, &retVal, 0, this->GeneratorVerbose, 0);
+    command, &output, &output, &retVal, nullptr, this->GeneratorVerbose, 0);
   cmCPackLogger(cmCPackLog::LOG_VERBOSE, "Done running package maker"
                   << std::endl);
   if (!res || retVal) {
diff --git a/Source/CPack/cmCPackPackageMakerGenerator.h b/Source/CPack/cmCPackPackageMakerGenerator.h
index 62745152b..0575587d5 100644
--- a/Source/CPack/cmCPackPackageMakerGenerator.h
+++ b/Source/CPack/cmCPackPackageMakerGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackPackageMakerGenerator_h
 #define cmCPackPackageMakerGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCPackGenerator.h"
 #include "cmCPackPKGGenerator.h"
@@ -25,13 +25,13 @@ public:
    * Construct generator
    */
   cmCPackPackageMakerGenerator();
-  virtual ~cmCPackPackageMakerGenerator();
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  ~cmCPackPackageMakerGenerator() override;
+  bool SupportsComponentInstallation() const override;
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
-  int PackageFiles() CM_OVERRIDE;
-  const char* GetOutputExtension() CM_OVERRIDE { return ".dmg"; }
+  int InitializeInternal() override;
+  int PackageFiles() override;
+  const char* GetOutputExtension() override { return ".dmg"; }
 
   // Run PackageMaker with the given command line, which will (if
   // successful) produce the given package file. Returns true if
diff --git a/Source/CPack/cmCPackProductBuildGenerator.cxx b/Source/CPack/cmCPackProductBuildGenerator.cxx
index 1389eaa5a..6a6dc828f 100644
--- a/Source/CPack/cmCPackProductBuildGenerator.cxx
+++ b/Source/CPack/cmCPackProductBuildGenerator.cxx
@@ -54,7 +54,7 @@ int cmCPackProductBuildGenerator::PackageFiles()
   } else {
     if (!this->GenerateComponentPackage(basePackageDir,
                                         this->GetOption("CPACK_PACKAGE_NAME"),
-                                        toplevel, NULL)) {
+                                        toplevel, nullptr)) {
       return 0;
     }
   }
@@ -145,9 +145,9 @@ bool cmCPackProductBuildGenerator::RunProductBuild(const std::string& command)
   cmCPackLogger(cmCPackLog::LOG_VERBOSE, "Execute: " << command << std::endl);
   std::string output, error_output;
   int retVal = 1;
-  bool res =
-    cmSystemTools::RunSingleCommand(command.c_str(), &output, &error_output,
-                                    &retVal, 0, this->GeneratorVerbose, 0);
+  bool res = cmSystemTools::RunSingleCommand(command.c_str(), &output,
+                                             &error_output, &retVal, nullptr,
+                                             this->GeneratorVerbose, 0);
   cmCPackLogger(cmCPackLog::LOG_VERBOSE, "Done running command" << std::endl);
   if (!res || retVal) {
     cmGeneratedFileStream ofs(tmpFile.c_str());
@@ -174,7 +174,7 @@ bool cmCPackProductBuildGenerator::GenerateComponentPackage(
   cmCPackLogger(cmCPackLog::LOG_OUTPUT, "-   Building component package: "
                   << packageFile << std::endl);
 
-  const char* comp_name = component ? component->Name.c_str() : NULL;
+  const char* comp_name = component ? component->Name.c_str() : nullptr;
 
   const char* preflight = this->GetComponentScript("PREFLIGHT", comp_name);
   const char* postflight = this->GetComponentScript("POSTFLIGHT", comp_name);
@@ -190,7 +190,7 @@ bool cmCPackProductBuildGenerator::GenerateComponentPackage(
     cmCPackLogger(cmCPackLog::LOG_ERROR,
                   "Problem creating installer directory: " << scriptDir
                                                            << std::endl);
-    return 0;
+    return false;
   }
 
   // if preflight, postflight, or postupgrade are set
diff --git a/Source/CPack/cmCPackProductBuildGenerator.h b/Source/CPack/cmCPackProductBuildGenerator.h
index 12093a0e8..015fe4ace 100644
--- a/Source/CPack/cmCPackProductBuildGenerator.h
+++ b/Source/CPack/cmCPackProductBuildGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackProductBuildGenerator_h
 #define cmCPackProductBuildGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
@@ -25,12 +25,12 @@ public:
    * Construct generator
    */
   cmCPackProductBuildGenerator();
-  virtual ~cmCPackProductBuildGenerator();
+  ~cmCPackProductBuildGenerator() override;
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
-  int PackageFiles() CM_OVERRIDE;
-  const char* GetOutputExtension() CM_OVERRIDE { return ".pkg"; }
+  int InitializeInternal() override;
+  int PackageFiles() override;
+  const char* GetOutputExtension() override { return ".pkg"; }
 
   // Run ProductBuild with the given command line, which will (if
   // successful) produce the given package file. Returns true if
diff --git a/Source/CPack/cmCPackRPMGenerator.cxx b/Source/CPack/cmCPackRPMGenerator.cxx
index 8ec03c236..e40b74d7e 100644
--- a/Source/CPack/cmCPackRPMGenerator.cxx
+++ b/Source/CPack/cmCPackRPMGenerator.cxx
@@ -148,7 +148,7 @@ int cmCPackRPMGenerator::PackageComponents(bool ignoreGroup)
         for (compIt = this->Components.begin();
              compIt != this->Components.end(); ++compIt) {
           // Does the component belong to a group?
-          if (compIt->second.Group == CM_NULLPTR) {
+          if (compIt->second.Group == nullptr) {
             std::string component(compIt->first);
             std::transform(component.begin(), component.end(),
                            component.begin(), ::toupper);
@@ -214,7 +214,7 @@ int cmCPackRPMGenerator::PackageComponents(bool ignoreGroup)
       for (compIt = this->Components.begin(); compIt != this->Components.end();
            ++compIt) {
         // Does the component belong to a group?
-        if (compIt->second.Group == CM_NULLPTR) {
+        if (compIt->second.Group == nullptr) {
           std::string component(compIt->first);
           std::transform(component.begin(), component.end(), component.begin(),
                          ::toupper);
@@ -299,7 +299,7 @@ int cmCPackRPMGenerator::PackageComponents(bool ignoreGroup)
       for (compIt = this->Components.begin(); compIt != this->Components.end();
            ++compIt) {
         // Does the component belong to a group?
-        if (compIt->second.Group == CM_NULLPTR) {
+        if (compIt->second.Group == nullptr) {
           cmCPackLogger(
             cmCPackLog::LOG_VERBOSE, "Component <"
               << compIt->second.Name
@@ -430,7 +430,7 @@ std::string cmCPackRPMGenerator::GetComponentInstallDirNameSuffix(
   // the current COMPONENT belongs to.
   std::string groupVar =
     "CPACK_COMPONENT_" + cmSystemTools::UpperCase(componentName) + "_GROUP";
-  if (CM_NULLPTR != GetOption(groupVar)) {
+  if (nullptr != GetOption(groupVar)) {
     return std::string(GetOption(groupVar));
   }
   return componentName;
diff --git a/Source/CPack/cmCPackRPMGenerator.h b/Source/CPack/cmCPackRPMGenerator.h
index 52cfc13ed..27d3b6339 100644
--- a/Source/CPack/cmCPackRPMGenerator.h
+++ b/Source/CPack/cmCPackRPMGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackRPMGenerator_h
 #define cmCPackRPMGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCPackGenerator.h"
 
@@ -26,7 +26,7 @@ public:
    * Construct generator
    */
   cmCPackRPMGenerator();
-  ~cmCPackRPMGenerator() CM_OVERRIDE;
+  ~cmCPackRPMGenerator() override;
 
   static bool CanGenerate()
   {
@@ -43,8 +43,8 @@ public:
   }
 
 protected:
-  int InitializeInternal() CM_OVERRIDE;
-  int PackageFiles() CM_OVERRIDE;
+  int InitializeInternal() override;
+  int PackageFiles() override;
   /**
    * This method factors out the work done in component packaging case.
    */
@@ -61,10 +61,10 @@ protected:
    * components will be put in a single installer.
    */
   int PackageComponentsAllInOne(const std::string& compInstDirName);
-  const char* GetOutputExtension() CM_OVERRIDE { return ".rpm"; }
-  bool SupportsComponentInstallation() const CM_OVERRIDE;
+  const char* GetOutputExtension() override { return ".rpm"; }
+  bool SupportsComponentInstallation() const override;
   std::string GetComponentInstallDirNameSuffix(
-    const std::string& componentName) CM_OVERRIDE;
+    const std::string& componentName) override;
 
   void AddGeneratedPackageNames();
 };
diff --git a/Source/CPack/cmCPackSTGZGenerator.cxx b/Source/CPack/cmCPackSTGZGenerator.cxx
index c54161426..3d7fd3c14 100644
--- a/Source/CPack/cmCPackSTGZGenerator.cxx
+++ b/Source/CPack/cmCPackSTGZGenerator.cxx
@@ -6,7 +6,6 @@
 #include <sstream>
 #include <stdio.h>
 #include <string>
-#include <vector>
 
 #include "cmCPackGenerator.h"
 #include "cmCPackLog.h"
@@ -48,9 +47,8 @@ int cmCPackSTGZGenerator::PackageFiles()
    * have generated several packages (component packaging)
    * so we must iterate over generated packages.
    */
-  for (std::vector<std::string>::iterator it = packageFileNames.begin();
-       it != packageFileNames.end(); ++it) {
-    retval &= cmSystemTools::SetPermissions((*it).c_str(),
+  for (std::string const& pfn : packageFileNames) {
+    retval &= cmSystemTools::SetPermissions(pfn.c_str(),
 #if defined(_MSC_VER) || defined(__MINGW32__)
                                             S_IREAD | S_IWRITE | S_IEXEC
 #else
diff --git a/Source/CPack/cmCPackSTGZGenerator.h b/Source/CPack/cmCPackSTGZGenerator.h
index 8304e8076..9cf184b19 100644
--- a/Source/CPack/cmCPackSTGZGenerator.h
+++ b/Source/CPack/cmCPackSTGZGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackSTGZGenerator_h
 #define cmCPackSTGZGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCPackGenerator.h"
 #include "cmCPackTGZGenerator.h"
@@ -23,13 +23,13 @@ public:
    * Construct generator
    */
   cmCPackSTGZGenerator();
-  ~cmCPackSTGZGenerator() CM_OVERRIDE;
+  ~cmCPackSTGZGenerator() override;
 
 protected:
-  int PackageFiles() CM_OVERRIDE;
-  int InitializeInternal() CM_OVERRIDE;
-  int GenerateHeader(std::ostream* os) CM_OVERRIDE;
-  const char* GetOutputExtension() CM_OVERRIDE { return ".sh"; }
+  int PackageFiles() override;
+  int InitializeInternal() override;
+  int GenerateHeader(std::ostream* os) override;
+  const char* GetOutputExtension() override { return ".sh"; }
 };
 
 #endif
diff --git a/Source/CPack/cmCPackTGZGenerator.h b/Source/CPack/cmCPackTGZGenerator.h
index 9426b3a01..7be3d9d33 100644
--- a/Source/CPack/cmCPackTGZGenerator.h
+++ b/Source/CPack/cmCPackTGZGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackTGZGenerator_h
 #define cmCPackTGZGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCPackArchiveGenerator.h"
 #include "cmCPackGenerator.h"
@@ -20,10 +20,10 @@ public:
    * Construct generator
    */
   cmCPackTGZGenerator();
-  ~cmCPackTGZGenerator() CM_OVERRIDE;
+  ~cmCPackTGZGenerator() override;
 
 protected:
-  const char* GetOutputExtension() CM_OVERRIDE { return ".tar.gz"; }
+  const char* GetOutputExtension() override { return ".tar.gz"; }
 };
 
 #endif
diff --git a/Source/CPack/cmCPackTXZGenerator.h b/Source/CPack/cmCPackTXZGenerator.h
index 3b96e2d78..4aa59730e 100644
--- a/Source/CPack/cmCPackTXZGenerator.h
+++ b/Source/CPack/cmCPackTXZGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackTXZGenerator_h
 #define cmCPackTXZGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCPackArchiveGenerator.h"
 #include "cmCPackGenerator.h"
@@ -20,10 +20,10 @@ public:
    * Construct generator
    */
   cmCPackTXZGenerator();
-  ~cmCPackTXZGenerator() CM_OVERRIDE;
+  ~cmCPackTXZGenerator() override;
 
 protected:
-  const char* GetOutputExtension() CM_OVERRIDE { return ".tar.xz"; }
+  const char* GetOutputExtension() override { return ".tar.xz"; }
 };
 
 #endif
diff --git a/Source/CPack/cmCPackTarBZip2Generator.h b/Source/CPack/cmCPackTarBZip2Generator.h
index 9b4b8f4ff..7975ddaee 100644
--- a/Source/CPack/cmCPackTarBZip2Generator.h
+++ b/Source/CPack/cmCPackTarBZip2Generator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackTarBZip2Generator_h
 #define cmCPackTarBZip2Generator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCPackArchiveGenerator.h"
 #include "cmCPackGenerator.h"
@@ -19,10 +19,10 @@ public:
    * Construct generator
    */
   cmCPackTarBZip2Generator();
-  ~cmCPackTarBZip2Generator() CM_OVERRIDE;
+  ~cmCPackTarBZip2Generator() override;
 
 protected:
-  const char* GetOutputExtension() CM_OVERRIDE { return ".tar.bz2"; }
+  const char* GetOutputExtension() override { return ".tar.bz2"; }
 };
 
 #endif
diff --git a/Source/CPack/cmCPackTarCompressGenerator.h b/Source/CPack/cmCPackTarCompressGenerator.h
index 381d6eb2f..37c7f48c8 100644
--- a/Source/CPack/cmCPackTarCompressGenerator.h
+++ b/Source/CPack/cmCPackTarCompressGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackTarCompressGenerator_h
 #define cmCPackTarCompressGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCPackArchiveGenerator.h"
 #include "cmCPackGenerator.h"
@@ -19,10 +19,10 @@ public:
    * Construct generator
    */
   cmCPackTarCompressGenerator();
-  ~cmCPackTarCompressGenerator() CM_OVERRIDE;
+  ~cmCPackTarCompressGenerator() override;
 
 protected:
-  const char* GetOutputExtension() CM_OVERRIDE { return ".tar.Z"; }
+  const char* GetOutputExtension() override { return ".tar.Z"; }
 };
 
 #endif
diff --git a/Source/CPack/cmCPackZIPGenerator.h b/Source/CPack/cmCPackZIPGenerator.h
index 00c872029..58ec79ef1 100644
--- a/Source/CPack/cmCPackZIPGenerator.h
+++ b/Source/CPack/cmCPackZIPGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackZIPGenerator_h
 #define cmCPackZIPGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCPackArchiveGenerator.h"
 #include "cmCPackGenerator.h"
@@ -20,10 +20,10 @@ public:
    * Construct generator
    */
   cmCPackZIPGenerator();
-  ~cmCPackZIPGenerator() CM_OVERRIDE;
+  ~cmCPackZIPGenerator() override;
 
 protected:
-  const char* GetOutputExtension() CM_OVERRIDE { return ".zip"; }
+  const char* GetOutputExtension() override { return ".zip"; }
 };
 
 #endif
diff --git a/Source/CPack/cpack.cxx b/Source/CPack/cpack.cxx
index a44bc3d68..addb54ea0 100644
--- a/Source/CPack/cpack.cxx
+++ b/Source/CPack/cpack.cxx
@@ -1,11 +1,11 @@
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
-#include "cmConfigure.h"
 
 #include "cmsys/CommandLineArguments.hxx"
 #include "cmsys/Encoding.hxx"
 #include <iostream>
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stddef.h>
 #include <string>
@@ -25,17 +25,16 @@
 #include "cmMakefile.h"
 #include "cmStateSnapshot.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 static const char* cmDocumentationName[][2] = {
-  { CM_NULLPTR, "  cpack - Packaging driver provided by CMake." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  cpack - Packaging driver provided by CMake." },
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationUsage[][2] = {
-  { CM_NULLPTR, "  cpack -G <generator> [options]" },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  cpack -G <generator> [options]" },
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationOptions[][2] = {
@@ -49,7 +48,7 @@ static const char* cmDocumentationOptions[][2] = {
   { "-R <package version>", "override/define CPACK_PACKAGE_VERSION" },
   { "-B <package directory>", "override/define CPACK_PACKAGE_DIRECTORY" },
   { "--vendor <vendor name>", "override/define CPACK_PACKAGE_VENDOR" },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, nullptr }
 };
 
 int cpackUnknownArgument(const char* /*unused*/, void* /*unused*/)
@@ -136,7 +135,7 @@ int main(int argc, char const* const* argv)
   cpackDefinitions definitions;
   definitions.Log = &log;
 
-  cpackConfigFile = "";
+  cpackConfigFile.clear();
 
   cmsys::CommandLineArguments arg;
   arg.Initialize(argc, argv);
@@ -193,10 +192,9 @@ int main(int argc, char const* const* argv)
   cminst.SetHomeOutputDirectory("");
   cminst.GetCurrentSnapshot().SetDefaultDefinitions();
   cmGlobalGenerator cmgg(&cminst);
-  CM_AUTO_PTR<cmMakefile> globalMF(
-    new cmMakefile(&cmgg, cminst.GetCurrentSnapshot()));
+  cmMakefile globalMF(&cmgg, cminst.GetCurrentSnapshot());
 #if defined(__CYGWIN__)
-  globalMF->AddDefinition("CMAKE_LEGACY_CYGWIN_WIN32", "0");
+  globalMF.AddDefinition("CMAKE_LEGACY_CYGWIN_WIN32", "0");
 #endif
 
   bool cpackConfigFileSpecified = true;
@@ -208,7 +206,7 @@ int main(int argc, char const* const* argv)
 
   cmCPackGeneratorFactory generators;
   generators.SetLogger(&log);
-  cmCPackGenerator* cpackGenerator = CM_NULLPTR;
+  cmCPackGenerator* cpackGenerator = nullptr;
 
   cmDocumentation doc;
   doc.addCPackStandardDocSections();
@@ -226,16 +224,16 @@ int main(int argc, char const* const* argv)
     // find out which system cpack is running on, so it can setup the search
     // paths, so FIND_XXX() commands can be used in scripts
     std::string systemFile =
-      globalMF->GetModulesFile("CMakeDetermineSystem.cmake");
-    if (!globalMF->ReadListFile(systemFile.c_str())) {
+      globalMF.GetModulesFile("CMakeDetermineSystem.cmake");
+    if (!globalMF.ReadListFile(systemFile.c_str())) {
       cmCPack_Log(&log, cmCPackLog::LOG_ERROR,
                   "Error reading CMakeDetermineSystem.cmake" << std::endl);
       return 1;
     }
 
     systemFile =
-      globalMF->GetModulesFile("CMakeSystemSpecificInformation.cmake");
-    if (!globalMF->ReadListFile(systemFile.c_str())) {
+      globalMF.GetModulesFile("CMakeSystemSpecificInformation.cmake");
+    if (!globalMF.ReadListFile(systemFile.c_str())) {
       cmCPack_Log(&log, cmCPackLog::LOG_ERROR,
                   "Error reading CMakeSystemSpecificInformation.cmake"
                     << std::endl);
@@ -243,7 +241,7 @@ int main(int argc, char const* const* argv)
     }
 
     if (!cpackBuildConfig.empty()) {
-      globalMF->AddDefinition("CPACK_BUILD_CONFIG", cpackBuildConfig.c_str());
+      globalMF.AddDefinition("CPACK_BUILD_CONFIG", cpackBuildConfig.c_str());
     }
 
     if (cmSystemTools::FileExists(cpackConfigFile.c_str())) {
@@ -251,7 +249,7 @@ int main(int argc, char const* const* argv)
       cmCPack_Log(&log, cmCPackLog::LOG_VERBOSE,
                   "Read CPack configuration file: " << cpackConfigFile
                                                     << std::endl);
-      if (!globalMF->ReadListFile(cpackConfigFile.c_str())) {
+      if (!globalMF.ReadListFile(cpackConfigFile.c_str())) {
         cmCPack_Log(&log, cmCPackLog::LOG_ERROR,
                     "Problem reading CPack config file: \""
                       << cpackConfigFile << "\"" << std::endl);
@@ -265,58 +263,53 @@ int main(int argc, char const* const* argv)
     }
 
     if (!generator.empty()) {
-      globalMF->AddDefinition("CPACK_GENERATOR", generator.c_str());
+      globalMF.AddDefinition("CPACK_GENERATOR", generator.c_str());
     }
     if (!cpackProjectName.empty()) {
-      globalMF->AddDefinition("CPACK_PACKAGE_NAME", cpackProjectName.c_str());
+      globalMF.AddDefinition("CPACK_PACKAGE_NAME", cpackProjectName.c_str());
     }
     if (!cpackProjectVersion.empty()) {
-      globalMF->AddDefinition("CPACK_PACKAGE_VERSION",
-                              cpackProjectVersion.c_str());
+      globalMF.AddDefinition("CPACK_PACKAGE_VERSION",
+                             cpackProjectVersion.c_str());
     }
     if (!cpackProjectVendor.empty()) {
-      globalMF->AddDefinition("CPACK_PACKAGE_VENDOR",
-                              cpackProjectVendor.c_str());
+      globalMF.AddDefinition("CPACK_PACKAGE_VENDOR",
+                             cpackProjectVendor.c_str());
     }
     // if this is not empty it has been set on the command line
     // go for it. Command line override values set in config file.
     if (!cpackProjectDirectory.empty()) {
-      globalMF->AddDefinition("CPACK_PACKAGE_DIRECTORY",
-                              cpackProjectDirectory.c_str());
+      globalMF.AddDefinition("CPACK_PACKAGE_DIRECTORY",
+                             cpackProjectDirectory.c_str());
     }
     // The value has not been set on the command line
     else {
       // get a default value (current working directory)
       cpackProjectDirectory = cmsys::SystemTools::GetCurrentWorkingDirectory();
       // use default value iff no value has been provided by the config file
-      if (!globalMF->IsSet("CPACK_PACKAGE_DIRECTORY")) {
-        globalMF->AddDefinition("CPACK_PACKAGE_DIRECTORY",
-                                cpackProjectDirectory.c_str());
+      if (!globalMF.IsSet("CPACK_PACKAGE_DIRECTORY")) {
+        globalMF.AddDefinition("CPACK_PACKAGE_DIRECTORY",
+                               cpackProjectDirectory.c_str());
       }
     }
-    cpackDefinitions::MapType::iterator cdit;
-    for (cdit = definitions.Map.begin(); cdit != definitions.Map.end();
-         ++cdit) {
-      globalMF->AddDefinition(cdit->first, cdit->second.c_str());
+    for (auto const& cd : definitions.Map) {
+      globalMF.AddDefinition(cd.first, cd.second.c_str());
     }
 
-    const char* cpackModulesPath =
-      globalMF->GetDefinition("CPACK_MODULE_PATH");
+    const char* cpackModulesPath = globalMF.GetDefinition("CPACK_MODULE_PATH");
     if (cpackModulesPath) {
-      globalMF->AddDefinition("CMAKE_MODULE_PATH", cpackModulesPath);
+      globalMF.AddDefinition("CMAKE_MODULE_PATH", cpackModulesPath);
     }
-    const char* genList = globalMF->GetDefinition("CPACK_GENERATOR");
+    const char* genList = globalMF.GetDefinition("CPACK_GENERATOR");
     if (!genList) {
       cmCPack_Log(&log, cmCPackLog::LOG_ERROR, "CPack generator not specified"
                     << std::endl);
     } else {
       std::vector<std::string> generatorsVector;
       cmSystemTools::ExpandListArgument(genList, generatorsVector);
-      std::vector<std::string>::iterator it;
-      for (it = generatorsVector.begin(); it != generatorsVector.end(); ++it) {
-        const char* gen = it->c_str();
-        cmMakefile::ScopePushPop raii(globalMF.get());
-        cmMakefile* mf = globalMF.get();
+      for (std::string const& gen : generatorsVector) {
+        cmMakefile::ScopePushPop raii(&globalMF);
+        cmMakefile* mf = &globalMF;
         cmCPack_Log(&log, cmCPackLog::LOG_VERBOSE,
                     "Specified generator: " << gen << std::endl);
         if (parsed && !mf->GetDefinition("CPACK_PACKAGE_NAME")) {
@@ -355,13 +348,14 @@ int main(int argc, char const* const* argv)
           }
 
           if (!mf->GetDefinition("CPACK_INSTALL_COMMANDS") &&
+              !mf->GetDefinition("CPACK_INSTALL_SCRIPT") &&
               !mf->GetDefinition("CPACK_INSTALLED_DIRECTORIES") &&
               !mf->GetDefinition("CPACK_INSTALL_CMAKE_PROJECTS")) {
             cmCPack_Log(
               &log, cmCPackLog::LOG_ERROR,
               "Please specify build tree of the project that uses CMake "
               "using CPACK_INSTALL_CMAKE_PROJECTS, specify "
-              "CPACK_INSTALL_COMMANDS, or specify "
+              "CPACK_INSTALL_COMMANDS, CPACK_INSTALL_SCRIPT, or "
               "CPACK_INSTALLED_DIRECTORIES."
                 << std::endl);
             parsed = 0;
@@ -414,12 +408,10 @@ int main(int argc, char const* const* argv)
     doc.PrependSection("Options", cmDocumentationOptions);
 
     std::vector<cmDocumentationEntry> v;
-    cmCPackGeneratorFactory::DescriptionsMap::const_iterator generatorIt;
-    for (generatorIt = generators.GetGeneratorsList().begin();
-         generatorIt != generators.GetGeneratorsList().end(); ++generatorIt) {
+    for (auto const& g : generators.GetGeneratorsList()) {
       cmDocumentationEntry e;
-      e.Name = generatorIt->first;
-      e.Brief = generatorIt->second;
+      e.Name = g.first;
+      e.Brief = g.second;
       v.push_back(e);
     }
     doc.SetSection("Generators", v);
diff --git a/Source/CTest/cmCTestBZR.cxx b/Source/CTest/cmCTestBZR.cxx
index 94f39c265..015220091 100644
--- a/Source/CTest/cmCTestBZR.cxx
+++ b/Source/CTest/cmCTestBZR.cxx
@@ -98,7 +98,7 @@ private:
   bool CheckOutFound;
   cmsys::RegularExpression RegexCheckOut;
   cmsys::RegularExpression RegexParent;
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->RegexCheckOut.find(this->Line)) {
       this->BZR->URL = this->RegexCheckOut.match(1);
@@ -123,7 +123,7 @@ public:
 private:
   std::string& Rev;
   cmsys::RegularExpression RegexRevno;
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->RegexRevno.find(this->Line)) {
       this->Rev = this->RegexRevno.match(1);
@@ -136,13 +136,13 @@ std::string cmCTestBZR::LoadInfo()
 {
   // Run "bzr info" to get the repository info from the work tree.
   const char* bzr = this->CommandLineTool.c_str();
-  const char* bzr_info[] = { bzr, "info", CM_NULLPTR };
+  const char* bzr_info[] = { bzr, "info", nullptr };
   InfoParser iout(this, "info-out> ");
   OutputLogger ierr(this->Log, "info-err> ");
   this->RunChild(bzr_info, &iout, &ierr);
 
   // Run "bzr revno" to get the repository revision number from the work tree.
-  const char* bzr_revno[] = { bzr, "revno", CM_NULLPTR };
+  const char* bzr_revno[] = { bzr, "revno", nullptr };
   std::string rev;
   RevnoParser rout(this, "revno-out> ", rev);
   OutputLogger rerr(this->Log, "revno-err> ");
@@ -182,15 +182,15 @@ public:
   {
     this->InitializeParser();
   }
-  ~LogParser() CM_OVERRIDE { this->CleanupParser(); }
+  ~LogParser() override { this->CleanupParser(); }
 
-  int InitializeParser() CM_OVERRIDE
+  int InitializeParser() override
   {
     int res = cmXMLParser::InitializeParser();
     if (res) {
       XML_SetUnknownEncodingHandler(static_cast<XML_Parser>(this->Parser),
                                     cmBZRXMLParserUnknownEncodingHandler,
-                                    CM_NULLPTR);
+                                    nullptr);
     }
     return res;
   }
@@ -207,14 +207,14 @@ private:
 
   cmsys::RegularExpression EmailRegex;
 
-  bool ProcessChunk(const char* data, int length) CM_OVERRIDE
+  bool ProcessChunk(const char* data, int length) override
   {
     this->OutputLogger::ProcessChunk(data, length);
     this->ParseChunk(data, length);
     return true;
   }
 
-  void StartElement(const std::string& name, const char** /*atts*/) CM_OVERRIDE
+  void StartElement(const std::string& name, const char** /*atts*/) override
   {
     this->CData.clear();
     if (name == "log") {
@@ -239,12 +239,12 @@ private:
     }
   }
 
-  void CharacterDataHandler(const char* data, int length) CM_OVERRIDE
+  void CharacterDataHandler(const char* data, int length) override
   {
     this->CData.insert(this->CData.end(), data, data + length);
   }
 
-  void EndElement(const std::string& name) CM_OVERRIDE
+  void EndElement(const std::string& name) override
   {
     if (name == "log") {
       this->BZR->DoRevision(this->Rev, this->Changes);
@@ -274,7 +274,7 @@ private:
     this->CData.clear();
   }
 
-  void ReportError(int /*line*/, int /*column*/, const char* msg) CM_OVERRIDE
+  void ReportError(int /*line*/, int /*column*/, const char* msg) override
   {
     this->BZR->Log << "Error parsing bzr log xml: " << msg << "\n";
   }
@@ -294,7 +294,7 @@ private:
   cmCTestBZR* BZR;
   cmsys::RegularExpression RegexUpdate;
 
-  bool ProcessChunk(const char* first, int length) CM_OVERRIDE
+  bool ProcessChunk(const char* first, int length) override
   {
     bool last_is_new_line = (*first == '\r' || *first == '\n');
 
@@ -309,11 +309,11 @@ private:
 
           // Hand this line to the subclass implementation.
           if (!this->ProcessLine()) {
-            this->Line = "";
+            this->Line.clear();
             return false;
           }
 
-          this->Line = "";
+          this->Line.clear();
           last_is_new_line = true;
         }
       } else {
@@ -325,7 +325,7 @@ private:
     return true;
   }
 
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->RegexUpdate.find(this->Line)) {
       this->DoPath(this->RegexUpdate.match(1)[0],
@@ -373,14 +373,13 @@ bool cmCTestBZR::UpdateImpl()
   bzr_update.push_back(this->CommandLineTool.c_str());
   bzr_update.push_back("pull");
 
-  for (std::vector<std::string>::const_iterator ai = args.begin();
-       ai != args.end(); ++ai) {
-    bzr_update.push_back(ai->c_str());
+  for (std::string const& arg : args) {
+    bzr_update.push_back(arg.c_str());
   }
 
   bzr_update.push_back(this->URL.c_str());
 
-  bzr_update.push_back(CM_NULLPTR);
+  bzr_update.push_back(nullptr);
 
   // For some reason bzr uses stderr to display the update status.
   OutputLogger out(this->Log, "pull-out> ");
@@ -408,8 +407,7 @@ bool cmCTestBZR::LoadRevisions()
   // Run "bzr log" to get all global revisions of interest.
   const char* bzr = this->CommandLineTool.c_str();
   const char* bzr_log[] = {
-    bzr,       "log", "-v", "-r", revs.c_str(), "--xml", this->URL.c_str(),
-    CM_NULLPTR
+    bzr, "log", "-v", "-r", revs.c_str(), "--xml", this->URL.c_str(), nullptr
   };
   {
     LogParser out(this, "log-out> ");
@@ -433,7 +431,7 @@ public:
 private:
   cmCTestBZR* BZR;
   cmsys::RegularExpression RegexStatus;
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->RegexStatus.find(this->Line)) {
       this->DoPath(this->RegexStatus.match(1)[0],
@@ -467,7 +465,7 @@ bool cmCTestBZR::LoadModifications()
 {
   // Run "bzr status" which reports local modifications.
   const char* bzr = this->CommandLineTool.c_str();
-  const char* bzr_status[] = { bzr, "status", "-SV", CM_NULLPTR };
+  const char* bzr_status[] = { bzr, "status", "-SV", nullptr };
   StatusParser out(this, "status-out> ");
   OutputLogger err(this->Log, "status-err> ");
   this->RunChild(bzr_status, &out, &err);
diff --git a/Source/CTest/cmCTestBZR.h b/Source/CTest/cmCTestBZR.h
index 2e8e88f95..d5c78c760 100644
--- a/Source/CTest/cmCTestBZR.h
+++ b/Source/CTest/cmCTestBZR.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestBZR_h
 #define cmCTestBZR_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestGlobalVC.h"
 
@@ -22,20 +22,20 @@ public:
   /** Construct with a CTest instance and update log stream.  */
   cmCTestBZR(cmCTest* ctest, std::ostream& log);
 
-  ~cmCTestBZR() CM_OVERRIDE;
+  ~cmCTestBZR() override;
 
 private:
   // Implement cmCTestVC internal API.
-  bool NoteOldRevision() CM_OVERRIDE;
-  bool NoteNewRevision() CM_OVERRIDE;
-  bool UpdateImpl() CM_OVERRIDE;
+  bool NoteOldRevision() override;
+  bool NoteNewRevision() override;
+  bool UpdateImpl() override;
 
   // URL of repository directory checked out in the working tree.
   std::string URL;
 
   std::string LoadInfo();
-  bool LoadModifications() CM_OVERRIDE;
-  bool LoadRevisions() CM_OVERRIDE;
+  bool LoadModifications() override;
+  bool LoadRevisions() override;
 
   // Parsing helper classes.
   class InfoParser;
diff --git a/Source/CTest/cmCTestBatchTestHandler.cxx b/Source/CTest/cmCTestBatchTestHandler.cxx
index beee53a13..2eed8bed9 100644
--- a/Source/CTest/cmCTestBatchTestHandler.cxx
+++ b/Source/CTest/cmCTestBatchTestHandler.cxx
@@ -29,10 +29,9 @@ void cmCTestBatchTestHandler::WriteBatchScript()
   fout.open(this->Script.c_str());
   fout << "#!/bin/sh\n";
 
-  for (TestMap::iterator i = this->Tests.begin(); i != this->Tests.end();
-       ++i) {
-    this->WriteSrunArgs(i->first, fout);
-    this->WriteTestCommand(i->first, fout);
+  for (auto const& t : this->Tests) {
+    this->WriteSrunArgs(t.first, fout);
+    this->WriteTestCommand(t.first, fout);
     fout << "\n";
   }
   fout.flush();
@@ -80,9 +79,8 @@ void cmCTestBatchTestHandler::WriteTestCommand(int test, std::ostream& fout)
   this->TestHandler->GenerateTestCommand(processArgs, test);
   processArgs.push_back(command);
 
-  for (std::vector<std::string>::iterator arg = processArgs.begin();
-       arg != processArgs.end(); ++arg) {
-    fout << *arg << " ";
+  for (std::string const& arg : processArgs) {
+    fout << arg << " ";
   }
 
   std::vector<std::string>::iterator i = args.begin();
diff --git a/Source/CTest/cmCTestBatchTestHandler.h b/Source/CTest/cmCTestBatchTestHandler.h
index 4a5dac1d6..42f87bddd 100644
--- a/Source/CTest/cmCTestBatchTestHandler.h
+++ b/Source/CTest/cmCTestBatchTestHandler.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestBatchTestHandler_h
 #define cmCTestBatchTestHandler_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestMultiProcessHandler.h"
 #include "cmsys/FStream.hxx"
@@ -17,8 +17,8 @@
 class cmCTestBatchTestHandler : public cmCTestMultiProcessHandler
 {
 public:
-  ~cmCTestBatchTestHandler() CM_OVERRIDE;
-  void RunTests() CM_OVERRIDE;
+  ~cmCTestBatchTestHandler() override;
+  void RunTests() override;
 
 protected:
   void WriteBatchScript();
diff --git a/Source/CTest/cmCTestBuildAndTestHandler.cxx b/Source/CTest/cmCTestBuildAndTestHandler.cxx
index cc290715c..a0d68a066 100644
--- a/Source/CTest/cmCTestBuildAndTestHandler.cxx
+++ b/Source/CTest/cmCTestBuildAndTestHandler.cxx
@@ -32,7 +32,7 @@ const char* cmCTestBuildAndTestHandler::GetOutput()
 }
 int cmCTestBuildAndTestHandler::ProcessHandler()
 {
-  this->Output = "";
+  this->Output.clear();
   std::string output;
   cmSystemTools::ResetErrorOccuredFlag();
   int retv = this->RunCMakeAndTest(&this->Output);
@@ -45,7 +45,6 @@ int cmCTestBuildAndTestHandler::RunCMake(std::string* outstring,
                                          std::string& cmakeOutString,
                                          cmake* cm)
 {
-  unsigned int k;
   std::vector<std::string> args;
   args.push_back(cmSystemTools::GetCMakeCommand());
   args.push_back(this->SourceDir);
@@ -65,7 +64,7 @@ int cmCTestBuildAndTestHandler::RunCMake(std::string* outstring,
     args.push_back(toolset);
   }
 
-  const char* config = CM_NULLPTR;
+  const char* config = nullptr;
   if (!this->CTest->GetConfigType().empty()) {
     config = this->CTest->GetConfigType().c_str();
   }
@@ -80,8 +79,8 @@ int cmCTestBuildAndTestHandler::RunCMake(std::string* outstring,
     args.push_back(btype);
   }
 
-  for (k = 0; k < this->BuildOptions.size(); ++k) {
-    args.push_back(this->BuildOptions[k]);
+  for (std::string const& opt : this->BuildOptions) {
+    args.push_back(opt);
   }
   if (cm->Run(args) != 0) {
     out << "Error: cmake execution failed\n";
@@ -115,21 +114,21 @@ int cmCTestBuildAndTestHandler::RunCMake(std::string* outstring,
 void CMakeMessageCallback(const char* m, const char* /*unused*/,
                           bool& /*unused*/, void* s)
 {
-  std::string* out = (std::string*)s;
+  std::string* out = static_cast<std::string*>(s);
   *out += m;
   *out += "\n";
 }
 
 void CMakeProgressCallback(const char* msg, float /*unused*/, void* s)
 {
-  std::string* out = (std::string*)s;
+  std::string* out = static_cast<std::string*>(s);
   *out += msg;
   *out += "\n";
 }
 
 void CMakeOutputCallback(const char* m, size_t len, void* s)
 {
-  std::string* out = (std::string*)s;
+  std::string* out = static_cast<std::string*>(s);
   out->append(m, len);
 }
 
@@ -148,10 +147,10 @@ public:
   }
   ~cmCTestBuildAndTestCaptureRAII()
   {
-    this->CM.SetProgressCallback(CM_NULLPTR, CM_NULLPTR);
-    cmSystemTools::SetStderrCallback(CM_NULLPTR, CM_NULLPTR);
-    cmSystemTools::SetStdoutCallback(CM_NULLPTR, CM_NULLPTR);
-    cmSystemTools::SetMessageCallback(CM_NULLPTR, CM_NULLPTR);
+    this->CM.SetProgressCallback(nullptr, nullptr);
+    cmSystemTools::SetStderrCallback(nullptr, nullptr);
+    cmSystemTools::SetStdoutCallback(nullptr, nullptr);
+    cmSystemTools::SetMessageCallback(nullptr, nullptr);
   }
 };
 
@@ -219,12 +218,10 @@ int cmCTestBuildAndTestHandler::RunCMakeAndTest(std::string* outstring)
   }
 
   // do the build
-  std::vector<std::string>::iterator tarIt;
   if (this->BuildTargets.empty()) {
     this->BuildTargets.push_back("");
   }
-  for (tarIt = this->BuildTargets.begin(); tarIt != this->BuildTargets.end();
-       ++tarIt) {
+  for (std::string const& tar : this->BuildTargets) {
     double remainingTime = 0;
     if (this->Timeout > 0) {
       remainingTime = this->Timeout - cmSystemTools::GetTime() + clock_start;
@@ -236,7 +233,7 @@ int cmCTestBuildAndTestHandler::RunCMakeAndTest(std::string* outstring)
       }
     }
     std::string output;
-    const char* config = CM_NULLPTR;
+    const char* config = nullptr;
     if (!this->CTest->GetConfigType().empty()) {
       config = this->CTest->GetConfigType().c_str();
     }
@@ -249,7 +246,7 @@ int cmCTestBuildAndTestHandler::RunCMakeAndTest(std::string* outstring)
       config = "Debug";
     }
     int retVal = cm.GetGlobalGenerator()->Build(
-      this->SourceDir, this->BinaryDir, this->BuildProject, *tarIt, output,
+      this->SourceDir, this->BinaryDir, this->BuildProject, tar, output,
       this->BuildMakeProgram, config, !this->BuildNoClean, false, false,
       remainingTime);
     out << output;
@@ -292,8 +289,8 @@ int cmCTestBuildAndTestHandler::RunCMakeAndTest(std::string* outstring)
         << this->TestCommand << "\n";
     out << "tried to find it in these places:\n";
     out << fullPath << "\n";
-    for (unsigned int i = 0; i < failed.size(); ++i) {
-      out << failed[i] << "\n";
+    for (std::string const& fail : failed) {
+      out << fail << "\n";
     }
     if (outstring) {
       *outstring = out.str();
@@ -305,10 +302,10 @@ int cmCTestBuildAndTestHandler::RunCMakeAndTest(std::string* outstring)
 
   std::vector<const char*> testCommand;
   testCommand.push_back(fullPath.c_str());
-  for (size_t k = 0; k < this->TestCommandArgs.size(); ++k) {
-    testCommand.push_back(this->TestCommandArgs[k].c_str());
+  for (std::string const& testCommandArg : this->TestCommandArgs) {
+    testCommand.push_back(testCommandArg.c_str());
   }
-  testCommand.push_back(CM_NULLPTR);
+  testCommand.push_back(nullptr);
   std::string outs;
   int retval = 0;
   // run the test from the this->BuildRunDir if set
@@ -317,8 +314,8 @@ int cmCTestBuildAndTestHandler::RunCMakeAndTest(std::string* outstring)
     cmSystemTools::ChangeDirectory(this->BuildRunDir);
   }
   out << "Running test command: \"" << fullPath << "\"";
-  for (size_t k = 0; k < this->TestCommandArgs.size(); ++k) {
-    out << " \"" << this->TestCommandArgs[k] << "\"";
+  for (std::string const& testCommandArg : this->TestCommandArgs) {
+    out << " \"" << testCommandArg << "\"";
   }
   out << "\n";
 
@@ -334,8 +331,8 @@ int cmCTestBuildAndTestHandler::RunCMakeAndTest(std::string* outstring)
     }
   }
 
-  int runTestRes = this->CTest->RunTest(testCommand, &outs, &retval,
-                                        CM_NULLPTR, remainingTime, CM_NULLPTR);
+  int runTestRes = this->CTest->RunTest(testCommand, &outs, &retval, nullptr,
+                                        remainingTime, nullptr);
 
   if (runTestRes != cmsysProcess_State_Exited || retval != 0) {
     out << "Test command failed: " << testCommand[0] << "\n";
diff --git a/Source/CTest/cmCTestBuildAndTestHandler.h b/Source/CTest/cmCTestBuildAndTestHandler.h
index 2e85e9fed..f19cb67ce 100644
--- a/Source/CTest/cmCTestBuildAndTestHandler.h
+++ b/Source/CTest/cmCTestBuildAndTestHandler.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestBuildAndTestHandler_h
 #define cmCTestBuildAndTestHandler_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestGenericHandler.h"
 
@@ -26,12 +26,12 @@ public:
   /*
    * The main entry point for this class
    */
-  int ProcessHandler() CM_OVERRIDE;
+  int ProcessHandler() override;
 
   //! Set all the build and test arguments
-  int ProcessCommandLineArguments(const std::string& currentArg, size_t& idx,
-                                  const std::vector<std::string>& allArgs)
-    CM_OVERRIDE;
+  int ProcessCommandLineArguments(
+    const std::string& currentArg, size_t& idx,
+    const std::vector<std::string>& allArgs) override;
 
   /*
    * Get the output variable
@@ -40,7 +40,7 @@ public:
 
   cmCTestBuildAndTestHandler();
 
-  void Initialize() CM_OVERRIDE;
+  void Initialize() override;
 
 protected:
   ///! Run CMake and build a test and then run it as a single test.
diff --git a/Source/CTest/cmCTestBuildCommand.cxx b/Source/CTest/cmCTestBuildCommand.cxx
index 4c8276007..ce27da18a 100644
--- a/Source/CTest/cmCTestBuildCommand.cxx
+++ b/Source/CTest/cmCTestBuildCommand.cxx
@@ -17,14 +17,14 @@ class cmExecutionStatus;
 
 cmCTestBuildCommand::cmCTestBuildCommand()
 {
-  this->GlobalGenerator = CM_NULLPTR;
+  this->GlobalGenerator = nullptr;
   this->Arguments[ctb_NUMBER_ERRORS] = "NUMBER_ERRORS";
   this->Arguments[ctb_NUMBER_WARNINGS] = "NUMBER_WARNINGS";
   this->Arguments[ctb_TARGET] = "TARGET";
   this->Arguments[ctb_CONFIGURATION] = "CONFIGURATION";
   this->Arguments[ctb_FLAGS] = "FLAGS";
   this->Arguments[ctb_PROJECT_NAME] = "PROJECT_NAME";
-  this->Arguments[ctb_LAST] = CM_NULLPTR;
+  this->Arguments[ctb_LAST] = nullptr;
   this->Last = ctb_LAST;
 }
 
@@ -32,7 +32,7 @@ cmCTestBuildCommand::~cmCTestBuildCommand()
 {
   if (this->GlobalGenerator) {
     delete this->GlobalGenerator;
-    this->GlobalGenerator = CM_NULLPTR;
+    this->GlobalGenerator = nullptr;
   }
 }
 
@@ -41,9 +41,9 @@ cmCTestGenericHandler* cmCTestBuildCommand::InitializeHandler()
   cmCTestGenericHandler* handler = this->CTest->GetInitializedHandler("build");
   if (!handler) {
     this->SetError("internal CTest error. Cannot instantiate build handler");
-    return CM_NULLPTR;
+    return nullptr;
   }
-  this->Handler = (cmCTestBuildHandler*)handler;
+  this->Handler = static_cast<cmCTestBuildHandler*>(handler);
 
   const char* ctestBuildCommand =
     this->Makefile->GetDefinition("CTEST_BUILD_COMMAND");
@@ -89,7 +89,7 @@ cmCTestGenericHandler* cmCTestBuildCommand::InitializeHandler()
       if (this->GlobalGenerator) {
         if (this->GlobalGenerator->GetName() != cmakeGeneratorName) {
           delete this->GlobalGenerator;
-          this->GlobalGenerator = CM_NULLPTR;
+          this->GlobalGenerator = nullptr;
         }
       }
       if (!this->GlobalGenerator) {
@@ -102,11 +102,11 @@ cmCTestGenericHandler* cmCTestBuildCommand::InitializeHandler()
           e += "\"";
           this->Makefile->IssueMessage(cmake::FATAL_ERROR, e);
           cmSystemTools::SetFatalErrorOccured();
-          return CM_NULLPTR;
+          return nullptr;
         }
       }
       if (strlen(cmakeBuildConfiguration) == 0) {
-        const char* config = CM_NULLPTR;
+        const char* config = nullptr;
 #ifdef CMAKE_INTDIR
         config = CMAKE_INTDIR;
 #endif
@@ -143,7 +143,7 @@ cmCTestGenericHandler* cmCTestBuildCommand::InitializeHandler()
         "with a custom command line.";
       /* clang-format on */
       this->SetError(ostr.str());
-      return CM_NULLPTR;
+      return nullptr;
     }
   }
 
@@ -153,6 +153,12 @@ cmCTestGenericHandler* cmCTestBuildCommand::InitializeHandler()
                                        this->Quiet);
   }
 
+  if (const char* labelsForSubprojects =
+        this->Makefile->GetDefinition("CTEST_LABELS_FOR_SUBPROJECTS")) {
+    this->CTest->SetCTestConfiguration("LabelsForSubprojects",
+                                       labelsForSubprojects, this->Quiet);
+  }
+
   handler->SetQuiet(this->Quiet);
   return handler;
 }
diff --git a/Source/CTest/cmCTestBuildCommand.h b/Source/CTest/cmCTestBuildCommand.h
index 9cf6a9652..77b05498d 100644
--- a/Source/CTest/cmCTestBuildCommand.h
+++ b/Source/CTest/cmCTestBuildCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestBuildCommand_h
 #define cmCTestBuildCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestHandlerCommand.h"
 
@@ -25,12 +25,12 @@ class cmCTestBuildCommand : public cmCTestHandlerCommand
 {
 public:
   cmCTestBuildCommand();
-  ~cmCTestBuildCommand() CM_OVERRIDE;
+  ~cmCTestBuildCommand() override;
 
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestBuildCommand* ni = new cmCTestBuildCommand;
     ni->CTest = this->CTest;
@@ -41,10 +41,10 @@ public:
   /**
    * The name of the command as specified in CMakeList.txt.
    */
-  std::string GetName() const CM_OVERRIDE { return "ctest_build"; }
+  std::string GetName() const override { return "ctest_build"; }
 
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   cmGlobalGenerator* GlobalGenerator;
 
@@ -62,7 +62,7 @@ protected:
     ctb_LAST
   };
 
-  cmCTestGenericHandler* InitializeHandler() CM_OVERRIDE;
+  cmCTestGenericHandler* InitializeHandler() override;
 };
 
 #endif
diff --git a/Source/CTest/cmCTestBuildHandler.cxx b/Source/CTest/cmCTestBuildHandler.cxx
index 18ef05c67..f4fc76929 100644
--- a/Source/CTest/cmCTestBuildHandler.cxx
+++ b/Source/CTest/cmCTestBuildHandler.cxx
@@ -74,7 +74,7 @@ static const char* cmCTestErrorMatches[] = {
   "^The project cannot be built\\.",
   "^\\[ERROR\\]",
   "^Command .* failed with exit code",
-  CM_NULLPTR
+  nullptr
 };
 
 static const char* cmCTestErrorExceptions[] = {
@@ -89,7 +89,7 @@ static const char* cmCTestErrorExceptions[] = {
   ":[ \\t]+Where:",
   "([^ :]+):([0-9]+): Warning",
   "------ Build started: .* ------",
-  CM_NULLPTR
+  nullptr
 };
 
 static const char* cmCTestWarningMatches[] = {
@@ -114,7 +114,7 @@ static const char* cmCTestWarningMatches[] = {
   "cc-[0-9]* CC: REMARK File = .*, Line = [0-9]*",
   "^CMake Warning.*:",
   "^\\[WARNING\\]",
-  CM_NULLPTR
+  nullptr
 };
 
 static const char* cmCTestWarningExceptions[] = {
@@ -134,7 +134,7 @@ static const char* cmCTestWarningExceptions[] = {
   "ld32: WARNING 85: definition of dataKey in",
   "cc: warning 422: Unknown option \"\\+b",
   "_with_warning_C",
-  CM_NULLPTR
+  nullptr
 };
 
 struct cmCTestBuildCompileErrorWarningRex
@@ -152,7 +152,7 @@ static cmCTestBuildCompileErrorWarningRex cmCTestWarningErrorFileLine[] = {
   { "^([a-zA-Z./0-9_+ ~-]+)\\(([0-9]+)\\)", 1, 2 },
   { "\"([a-zA-Z./0-9_+ ~-]+)\", line ([0-9]+)", 1, 2 },
   { "File = ([a-zA-Z./0-9_+ ~-]+), Line = ([0-9]+)", 1, 2 },
-  { CM_NULLPTR, 0, 0 }
+  { nullptr, 0, 0 }
 };
 
 cmCTestBuildHandler::cmCTestBuildHandler()
@@ -171,8 +171,8 @@ cmCTestBuildHandler::cmCTestBuildHandler()
 void cmCTestBuildHandler::Initialize()
 {
   this->Superclass::Initialize();
-  this->StartBuild = "";
-  this->EndBuild = "";
+  this->StartBuild.clear();
+  this->EndBuild.clear();
   this->CustomErrorMatches.clear();
   this->CustomErrorExceptions.clear();
   this->CustomWarningMatches.clear();
@@ -190,8 +190,8 @@ void cmCTestBuildHandler::Initialize()
   this->BuildOutputLogSize = 0;
   this->CurrentProcessingLine.clear();
 
-  this->SimplifySourceDir = "";
-  this->SimplifyBuildDir = "";
+  this->SimplifySourceDir.clear();
+  this->SimplifyBuildDir.clear();
   this->OutputLineCounter = 0;
   this->ErrorsAndWarnings.clear();
   this->LastErrorOrWarning = this->ErrorsAndWarnings.end();
@@ -260,11 +260,11 @@ std::string cmCTestBuildHandler::GetMakeCommand()
                      "MakeCommand:" << makeCommand << "\n", this->Quiet);
 
   std::string configType = this->CTest->GetConfigType();
-  if (configType == "") {
+  if (configType.empty()) {
     configType =
       this->CTest->GetCTestConfiguration("DefaultCTestConfigurationType");
   }
-  if (configType == "") {
+  if (configType.empty()) {
     configType = "Release";
   }
 
@@ -350,18 +350,16 @@ int cmCTestBuildHandler::ProcessHandler()
     this->CustomWarningExceptions.push_back(cmCTestWarningExceptions[cc]);
   }
 
-  // Pre-compile regular expressions objects for all regular expressions
-  std::vector<std::string>::iterator it;
+// Pre-compile regular expressions objects for all regular expressions
 
 #define cmCTestBuildHandlerPopulateRegexVector(strings, regexes)              \
   regexes.clear();                                                            \
   cmCTestOptionalLog(this->CTest, DEBUG,                                      \
                      this << "Add " #regexes << std::endl, this->Quiet);      \
-  for (it = (strings).begin(); it != (strings).end(); ++it) {                 \
+  for (std::string const& s : (strings)) {                                    \
     cmCTestOptionalLog(this->CTest, DEBUG,                                    \
-                       "Add " #strings ": " << *it << std::endl,              \
-                       this->Quiet);                                          \
-    (regexes).push_back(it->c_str());                                         \
+                       "Add " #strings ": " << s << std::endl, this->Quiet);  \
+    (regexes).push_back(s.c_str());                                           \
   }
   cmCTestBuildHandlerPopulateRegexVector(this->CustomErrorMatches,
                                          this->ErrorMatchRegex);
@@ -373,8 +371,8 @@ int cmCTestBuildHandler::ProcessHandler()
                                          this->WarningExceptionRegex);
 
   // Determine source and binary tree substitutions to simplify the output.
-  this->SimplifySourceDir = "";
-  this->SimplifyBuildDir = "";
+  this->SimplifySourceDir.clear();
+  this->SimplifyBuildDir.clear();
   if (this->CTest->GetCTestConfiguration("SourceDirectory").size() > 20) {
     std::string srcdir =
       this->CTest->GetCTestConfiguration("SourceDirectory") + "/";
@@ -426,27 +424,24 @@ int cmCTestBuildHandler::ProcessHandler()
   double elapsed_build_time = cmSystemTools::GetTime() - elapsed_time_start;
 
   // Cleanups strings in the errors and warnings list.
-  t_ErrorsAndWarningsVector::iterator evit;
   if (!this->SimplifySourceDir.empty()) {
-    for (evit = this->ErrorsAndWarnings.begin();
-         evit != this->ErrorsAndWarnings.end(); ++evit) {
-      cmSystemTools::ReplaceString(evit->Text, this->SimplifySourceDir.c_str(),
+    for (cmCTestBuildErrorWarning& evit : this->ErrorsAndWarnings) {
+      cmSystemTools::ReplaceString(evit.Text, this->SimplifySourceDir.c_str(),
                                    "/.../");
-      cmSystemTools::ReplaceString(evit->PreContext,
+      cmSystemTools::ReplaceString(evit.PreContext,
                                    this->SimplifySourceDir.c_str(), "/.../");
-      cmSystemTools::ReplaceString(evit->PostContext,
+      cmSystemTools::ReplaceString(evit.PostContext,
                                    this->SimplifySourceDir.c_str(), "/.../");
     }
   }
 
   if (!this->SimplifyBuildDir.empty()) {
-    for (evit = this->ErrorsAndWarnings.begin();
-         evit != this->ErrorsAndWarnings.end(); ++evit) {
-      cmSystemTools::ReplaceString(evit->Text, this->SimplifyBuildDir.c_str(),
+    for (cmCTestBuildErrorWarning& evit : this->ErrorsAndWarnings) {
+      cmSystemTools::ReplaceString(evit.Text, this->SimplifyBuildDir.c_str(),
                                    "/.../");
-      cmSystemTools::ReplaceString(evit->PreContext,
+      cmSystemTools::ReplaceString(evit.PreContext,
                                    this->SimplifyBuildDir.c_str(), "/.../");
-      cmSystemTools::ReplaceString(evit->PostContext,
+      cmSystemTools::ReplaceString(evit.PostContext,
                                    this->SimplifyBuildDir.c_str(), "/.../");
     }
   }
@@ -488,6 +483,7 @@ int cmCTestBuildHandler::ProcessHandler()
 void cmCTestBuildHandler::GenerateXMLHeader(cmXMLWriter& xml)
 {
   this->CTest->StartXML(xml, this->AppendXML);
+  this->CTest->GenerateSubprojectsOutput(xml);
   xml.StartElement("Build");
   xml.Element("StartDateTime", this->StartBuild);
   xml.Element("StartBuildTime",
@@ -503,7 +499,7 @@ public:
   {
   }
   FragmentCompare()
-    : FTC(CM_NULLPTR)
+    : FTC(nullptr)
   {
   }
   bool operator()(std::string const& l, std::string const& r) const
@@ -555,9 +551,8 @@ void cmCTestBuildHandler::GenerateXMLLaunched(cmXMLWriter& xml)
   }
 
   // Copy the fragments into the final XML file.
-  for (Fragments::const_iterator fi = fragments.begin(); fi != fragments.end();
-       ++fi) {
-    xml.FragmentFile(fi->c_str());
+  for (std::string const& f : fragments) {
+    xml.FragmentFile(f.c_str());
   }
 }
 
@@ -587,12 +582,11 @@ void cmCTestBuildHandler::GenerateXMLLogScraped(cmXMLWriter& xml)
       xml.StartElement(cm->Error ? "Error" : "Warning");
       xml.Element("BuildLogLine", cm->LogLine);
       xml.Element("Text", cm->Text);
-      std::vector<cmCTestCompileErrorWarningRex>::iterator rit;
-      for (rit = this->ErrorWarningFileLineRegex.begin();
-           rit != this->ErrorWarningFileLineRegex.end(); ++rit) {
-        cmsys::RegularExpression* re = &rit->RegularExpression;
+      for (cmCTestCompileErrorWarningRex& rit :
+           this->ErrorWarningFileLineRegex) {
+        cmsys::RegularExpression* re = &rit.RegularExpression;
         if (re->find(cm->Text.c_str())) {
-          cm->SourceFile = re->match(rit->FileIndex);
+          cm->SourceFile = re->match(rit.FileIndex);
           // At this point we need to make this->SourceFile relative to
           // the source root of the project, so cvs links will work
           cmSystemTools::ConvertToUnixSlashes(cm->SourceFile);
@@ -608,7 +602,7 @@ void cmCTestBuildHandler::GenerateXMLLogScraped(cmXMLWriter& xml)
             cm->SourceFile = cmSystemTools::CollapseFullPath(cm->SourceFile);
             cmSystemTools::ReplaceString(cm->SourceFile, srcdir.c_str(), "");
           }
-          cm->LineNumber = atoi(re->match(rit->LineIndex).c_str());
+          cm->LineNumber = atoi(re->match(rit.LineIndex).c_str());
           break;
         }
       }
@@ -758,9 +752,8 @@ void cmCTestBuildHandler::LaunchHelper::WriteScrapeMatchers(
   fname += purpose;
   fname += ".txt";
   cmGeneratedFileStream fout(fname.c_str());
-  for (std::vector<std::string>::const_iterator mi = matchers.begin();
-       mi != matchers.end(); ++mi) {
-    fout << *mi << "\n";
+  for (std::string const& m : matchers) {
+    fout << m << "\n";
   }
 }
 
@@ -776,18 +769,20 @@ int cmCTestBuildHandler::RunMakeCommand(const char* command, int* retVal,
   }
 
   std::vector<const char*> argv;
-  for (std::vector<std::string>::const_iterator a = args.begin();
-       a != args.end(); ++a) {
-    argv.push_back(a->c_str());
+  argv.reserve(args.size() + 1);
+  for (std::string const& arg : args) {
+    argv.push_back(arg.c_str());
   }
-  argv.push_back(CM_NULLPTR);
+  argv.push_back(nullptr);
 
   cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT, "Run command:",
                      this->Quiet);
-  std::vector<const char*>::iterator ait;
-  for (ait = argv.begin(); ait != argv.end() && *ait; ++ait) {
+  for (char const* arg : argv) {
+    if (!arg) {
+      break;
+    }
     cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
-                       " \"" << *ait << "\"", this->Quiet);
+                       " \"" << arg << "\"", this->Quiet);
   }
   cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT, std::endl,
                      this->Quiet);
@@ -834,7 +829,7 @@ int cmCTestBuildHandler::RunMakeCommand(const char* command, int* retVal,
 
   // For every chunk of data
   int res;
-  while ((res = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR))) {
+  while ((res = cmsysProcess_WaitForData(cp, &data, &length, nullptr))) {
     // Replace '\0' with '\n', since '\0' does not really make sense. This is
     // for Visual Studio output
     for (int cc = 0; cc < length; ++cc) {
@@ -865,9 +860,9 @@ int cmCTestBuildHandler::RunMakeCommand(const char* command, int* retVal,
                         &this->BuildProcessingQueue);
   }
 
-  this->ProcessBuffer(CM_NULLPTR, 0, tick, tick_len, ofs,
+  this->ProcessBuffer(nullptr, 0, tick, tick_len, ofs,
                       &this->BuildProcessingQueue);
-  this->ProcessBuffer(CM_NULLPTR, 0, tick, tick_len, ofs,
+  this->ProcessBuffer(nullptr, 0, tick, tick_len, ofs,
                       &this->BuildProcessingErrorQueue);
   cmCTestOptionalLog(this->CTest, HANDLER_PROGRESS_OUTPUT, " Size of output: "
                        << ((this->BuildOutputLogSize + 512) / 1024) << "K"
@@ -875,7 +870,7 @@ int cmCTestBuildHandler::RunMakeCommand(const char* command, int* retVal,
                      this->Quiet);
 
   // Properly handle output of the build command
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
   int result = cmsysProcess_GetState(cp);
 
   if (result == cmsysProcess_State_Exited) {
@@ -894,8 +889,8 @@ int cmCTestBuildHandler::RunMakeCommand(const char* command, int* retVal,
         errorwarning.Text =
           "*** WARNING non-zero return value in ctest from: ";
         errorwarning.Text += argv[0];
-        errorwarning.PreContext = "";
-        errorwarning.PostContext = "";
+        errorwarning.PreContext.clear();
+        errorwarning.PostContext.clear();
         errorwarning.Error = false;
         this->ErrorsAndWarnings.push_back(errorwarning);
         this->TotalWarnings++;
@@ -917,8 +912,8 @@ int cmCTestBuildHandler::RunMakeCommand(const char* command, int* retVal,
     errorwarning.LogLine = 1;
     errorwarning.Text = "*** ERROR executing: ";
     errorwarning.Text += cmsysProcess_GetErrorString(cp);
-    errorwarning.PreContext = "";
-    errorwarning.PostContext = "";
+    errorwarning.PreContext.clear();
+    errorwarning.PostContext.clear();
     errorwarning.Error = true;
     this->ErrorsAndWarnings.push_back(errorwarning);
     this->TotalErrors++;
@@ -1002,14 +997,12 @@ void cmCTestBuildHandler::ProcessBuffer(const char* data, size_t length,
         // This is an error or warning, so generate report
         errorwarning.LogLine = static_cast<int>(this->OutputLineCounter + 1);
         errorwarning.Text = line;
-        errorwarning.PreContext = "";
-        errorwarning.PostContext = "";
+        errorwarning.PreContext.clear();
+        errorwarning.PostContext.clear();
 
         // Copy pre-context to report
-        std::deque<std::string>::iterator pcit;
-        for (pcit = this->PreContext.begin(); pcit != this->PreContext.end();
-             ++pcit) {
-          errorwarning.PreContext += *pcit + "\n";
+        for (std::string const& pc : this->PreContext) {
+          errorwarning.PreContext += pc + "\n";
         }
         this->PreContext.clear();
 
@@ -1081,8 +1074,6 @@ int cmCTestBuildHandler::ProcessSingleLine(const char* data)
   cmCTestOptionalLog(this->CTest, DEBUG, "Line: [" << data << "]" << std::endl,
                      this->Quiet);
 
-  std::vector<cmsys::RegularExpression>::iterator it;
-
   int warningLine = 0;
   int errorLine = 0;
 
@@ -1091,9 +1082,8 @@ int cmCTestBuildHandler::ProcessSingleLine(const char* data)
   if (!this->ErrorQuotaReached) {
     // Errors
     int wrxCnt = 0;
-    for (it = this->ErrorMatchRegex.begin(); it != this->ErrorMatchRegex.end();
-         ++it) {
-      if (it->find(data)) {
+    for (cmsys::RegularExpression& rx : this->ErrorMatchRegex) {
+      if (rx.find(data)) {
         errorLine = 1;
         cmCTestOptionalLog(this->CTest, DEBUG,
                            "  Error Line: " << data << " (matches: "
@@ -1106,9 +1096,8 @@ int cmCTestBuildHandler::ProcessSingleLine(const char* data)
     }
     // Error exceptions
     wrxCnt = 0;
-    for (it = this->ErrorExceptionRegex.begin();
-         it != this->ErrorExceptionRegex.end(); ++it) {
-      if (it->find(data)) {
+    for (cmsys::RegularExpression& rx : this->ErrorExceptionRegex) {
+      if (rx.find(data)) {
         errorLine = 0;
         cmCTestOptionalLog(this->CTest, DEBUG, "  Not an error Line: "
                              << data << " (matches: "
@@ -1123,9 +1112,8 @@ int cmCTestBuildHandler::ProcessSingleLine(const char* data)
   if (!this->WarningQuotaReached) {
     // Warnings
     int wrxCnt = 0;
-    for (it = this->WarningMatchRegex.begin();
-         it != this->WarningMatchRegex.end(); ++it) {
-      if (it->find(data)) {
+    for (cmsys::RegularExpression& rx : this->WarningMatchRegex) {
+      if (rx.find(data)) {
         warningLine = 1;
         cmCTestOptionalLog(this->CTest, DEBUG, "  Warning Line: "
                              << data << " (matches: "
@@ -1139,9 +1127,8 @@ int cmCTestBuildHandler::ProcessSingleLine(const char* data)
 
     wrxCnt = 0;
     // Warning exceptions
-    for (it = this->WarningExceptionRegex.begin();
-         it != this->WarningExceptionRegex.end(); ++it) {
-      if (it->find(data)) {
+    for (cmsys::RegularExpression& rx : this->WarningExceptionRegex) {
+      if (rx.find(data)) {
         warningLine = 0;
         cmCTestOptionalLog(this->CTest, DEBUG, "  Not a warning Line: "
                              << data << " (matches: "
diff --git a/Source/CTest/cmCTestBuildHandler.h b/Source/CTest/cmCTestBuildHandler.h
index ef3cddf1b..6e71ad6ae 100644
--- a/Source/CTest/cmCTestBuildHandler.h
+++ b/Source/CTest/cmCTestBuildHandler.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestBuildHandler_h
 #define cmCTestBuildHandler_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestGenericHandler.h"
 
@@ -31,16 +31,16 @@ public:
   /*
    * The main entry point for this class
    */
-  int ProcessHandler() CM_OVERRIDE;
+  int ProcessHandler() override;
 
   cmCTestBuildHandler();
 
-  void PopulateCustomVectors(cmMakefile* mf) CM_OVERRIDE;
+  void PopulateCustomVectors(cmMakefile* mf) override;
 
   /**
    * Initialize handler
    */
-  void Initialize() CM_OVERRIDE;
+  void Initialize() override;
 
   int GetTotalErrors() { return this->TotalErrors; }
   int GetTotalWarnings() { return this->TotalWarnings; }
diff --git a/Source/CTest/cmCTestCVS.cxx b/Source/CTest/cmCTestCVS.cxx
index fad360ba4..5779935aa 100644
--- a/Source/CTest/cmCTestCVS.cxx
+++ b/Source/CTest/cmCTestCVS.cxx
@@ -46,7 +46,7 @@ private:
   cmsys::RegularExpression RegexFileRemoved1;
   cmsys::RegularExpression RegexFileRemoved2;
 
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->RegexFileUpdated.find(this->Line)) {
       this->DoFile(PathUpdated, this->RegexFileUpdated.match(2));
@@ -92,11 +92,10 @@ bool cmCTestCVS::UpdateImpl()
   cvs_update.push_back(this->CommandLineTool.c_str());
   cvs_update.push_back("-z3");
   cvs_update.push_back("update");
-  for (std::vector<std::string>::const_iterator ai = args.begin();
-       ai != args.end(); ++ai) {
-    cvs_update.push_back(ai->c_str());
+  for (std::string const& arg : args) {
+    cvs_update.push_back(arg.c_str());
   }
-  cvs_update.push_back(CM_NULLPTR);
+  cvs_update.push_back(nullptr);
 
   UpdateParser out(this, "up-out> ");
   UpdateParser err(this, "up-err> ");
@@ -133,7 +132,7 @@ private:
   SectionType Section;
   Revision Rev;
 
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->Line == ("======================================="
                        "======================================")) {
@@ -221,8 +220,9 @@ void cmCTestCVS::LoadRevisions(std::string const& file, const char* branchFlag,
 
   // Run "cvs log" to get revisions of this file on this branch.
   const char* cvs = this->CommandLineTool.c_str();
-  const char* cvs_log[] = { cvs,        "log",        "-N",
-                            branchFlag, file.c_str(), CM_NULLPTR };
+  const char* cvs_log[] = {
+    cvs, "log", "-N", branchFlag, file.c_str(), nullptr
+  };
 
   LogParser out(this, "log-out> ", revisions);
   OutputLogger err(this->Log, "log-err> ");
@@ -241,12 +241,12 @@ void cmCTestCVS::WriteXMLDirectory(cmXMLWriter& xml, std::string const& path,
 
   // Load revisions and write an entry for each file in this directory.
   std::vector<Revision> revisions;
-  for (Directory::const_iterator fi = dir.begin(); fi != dir.end(); ++fi) {
-    std::string full = path + slash + fi->first;
+  for (auto const& fi : dir) {
+    std::string full = path + slash + fi.first;
 
     // Load two real or unknown revisions.
     revisions.clear();
-    if (fi->second != PathUpdated) {
+    if (fi.second != PathUpdated) {
       // For local modifications the current rev is unknown and the
       // prior rev is the latest from cvs.
       revisions.push_back(this->Unknown);
@@ -255,8 +255,8 @@ void cmCTestCVS::WriteXMLDirectory(cmXMLWriter& xml, std::string const& path,
     revisions.resize(2, this->Unknown);
 
     // Write the entry for this file with these revisions.
-    File f(fi->second, &revisions[0], &revisions[1]);
-    this->WriteXMLEntry(xml, path, fi->first, full, f);
+    File f(fi.second, &revisions[0], &revisions[1]);
+    this->WriteXMLEntry(xml, path, fi.first, full, f);
   }
   xml.EndElement(); // Directory
 }
@@ -268,10 +268,8 @@ bool cmCTestCVS::WriteXMLUpdates(cmXMLWriter& xml)
              "    "
                << std::flush);
 
-  for (std::map<std::string, Directory>::const_iterator di =
-         this->Dirs.begin();
-       di != this->Dirs.end(); ++di) {
-    this->WriteXMLDirectory(xml, di->first, di->second);
+  for (auto const& d : this->Dirs) {
+    this->WriteXMLDirectory(xml, d.first, d.second);
   }
 
   cmCTestLog(this->CTest, HANDLER_OUTPUT, std::endl);
diff --git a/Source/CTest/cmCTestCVS.h b/Source/CTest/cmCTestCVS.h
index 1208cfad6..77fc3cc25 100644
--- a/Source/CTest/cmCTestCVS.h
+++ b/Source/CTest/cmCTestCVS.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestCVS_h
 #define cmCTestCVS_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestVC.h"
 
@@ -25,12 +25,12 @@ public:
   /** Construct with a CTest instance and update log stream.  */
   cmCTestCVS(cmCTest* ctest, std::ostream& log);
 
-  ~cmCTestCVS() CM_OVERRIDE;
+  ~cmCTestCVS() override;
 
 private:
   // Implement cmCTestVC internal API.
-  bool UpdateImpl() CM_OVERRIDE;
-  bool WriteXMLUpdates(cmXMLWriter& xml) CM_OVERRIDE;
+  bool UpdateImpl() override;
+  bool WriteXMLUpdates(cmXMLWriter& xml) override;
 
   // Update status for files in each directory.
   class Directory : public std::map<std::string, PathStatus>
diff --git a/Source/CTest/cmCTestCommand.h b/Source/CTest/cmCTestCommand.h
index 6fc237aac..8efb4194c 100644
--- a/Source/CTest/cmCTestCommand.h
+++ b/Source/CTest/cmCTestCommand.h
@@ -20,8 +20,8 @@ class cmCTestCommand : public cmCommand
 public:
   cmCTestCommand()
   {
-    this->CTest = CM_NULLPTR;
-    this->CTestScriptHandler = CM_NULLPTR;
+    this->CTest = nullptr;
+    this->CTestScriptHandler = nullptr;
   }
 
   cmCTest* CTest;
diff --git a/Source/CTest/cmCTestConfigureCommand.cxx b/Source/CTest/cmCTestConfigureCommand.cxx
index 73e893df3..c44b86605 100644
--- a/Source/CTest/cmCTestConfigureCommand.cxx
+++ b/Source/CTest/cmCTestConfigureCommand.cxx
@@ -16,7 +16,7 @@
 cmCTestConfigureCommand::cmCTestConfigureCommand()
 {
   this->Arguments[ctc_OPTIONS] = "OPTIONS";
-  this->Arguments[ctc_LAST] = CM_NULLPTR;
+  this->Arguments[ctc_LAST] = nullptr;
   this->Last = ctc_LAST;
 }
 
@@ -33,7 +33,7 @@ cmCTestGenericHandler* cmCTestConfigureCommand::InitializeHandler()
       "Build directory not specified. Either use BUILD "
       "argument to CTEST_CONFIGURE command or set CTEST_BINARY_DIRECTORY "
       "variable");
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   const char* ctestConfigureCommand =
@@ -53,7 +53,7 @@ cmCTestGenericHandler* cmCTestConfigureCommand::InitializeHandler()
           "Source directory not specified. Either use SOURCE "
           "argument to CTEST_CONFIGURE command or set CTEST_SOURCE_DIRECTORY "
           "variable");
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       const std::string cmakelists_file = source_dir + "/CMakeLists.txt";
@@ -61,7 +61,7 @@ cmCTestGenericHandler* cmCTestConfigureCommand::InitializeHandler()
         std::ostringstream e;
         e << "CMakeLists.txt file does not exist [" << cmakelists_file << "]";
         this->SetError(e.str());
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       bool multiConfig = false;
@@ -79,18 +79,13 @@ cmCTestGenericHandler* cmCTestConfigureCommand::InitializeHandler()
       cmakeConfigureCommand += cmSystemTools::GetCMakeCommand();
       cmakeConfigureCommand += "\"";
 
-      std::vector<std::string>::const_iterator it;
-      std::string option;
-      for (it = options.begin(); it != options.end(); ++it) {
-        option = *it;
-
+      for (std::string const& option : options) {
         cmakeConfigureCommand += " \"";
         cmakeConfigureCommand += option;
         cmakeConfigureCommand += "\"";
 
-        if ((CM_NULLPTR != strstr(option.c_str(), "CMAKE_BUILD_TYPE=")) ||
-            (CM_NULLPTR !=
-             strstr(option.c_str(), "CMAKE_BUILD_TYPE:STRING="))) {
+        if ((nullptr != strstr(option.c_str(), "CMAKE_BUILD_TYPE=")) ||
+            (nullptr != strstr(option.c_str(), "CMAKE_BUILD_TYPE:STRING="))) {
           cmakeBuildTypeInOptions = true;
         }
       }
@@ -137,16 +132,22 @@ cmCTestGenericHandler* cmCTestConfigureCommand::InitializeHandler()
         "Configure command is not specified. If this is a "
         "\"built with CMake\" project, set CTEST_CMAKE_GENERATOR. If not, "
         "set CTEST_CONFIGURE_COMMAND.");
-      return CM_NULLPTR;
+      return nullptr;
     }
   }
 
+  if (const char* labelsForSubprojects =
+        this->Makefile->GetDefinition("CTEST_LABELS_FOR_SUBPROJECTS")) {
+    this->CTest->SetCTestConfiguration("LabelsForSubprojects",
+                                       labelsForSubprojects, this->Quiet);
+  }
+
   cmCTestGenericHandler* handler =
     this->CTest->GetInitializedHandler("configure");
   if (!handler) {
     this->SetError(
       "internal CTest error. Cannot instantiate configure handler");
-    return CM_NULLPTR;
+    return nullptr;
   }
   handler->SetQuiet(this->Quiet);
   return handler;
diff --git a/Source/CTest/cmCTestConfigureCommand.h b/Source/CTest/cmCTestConfigureCommand.h
index 917f5ab8b..0cbcbfaa8 100644
--- a/Source/CTest/cmCTestConfigureCommand.h
+++ b/Source/CTest/cmCTestConfigureCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestConfigureCommand_h
 #define cmCTestConfigureCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestHandlerCommand.h"
 
@@ -25,7 +25,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestConfigureCommand* ni = new cmCTestConfigureCommand;
     ni->CTest = this->CTest;
@@ -36,10 +36,10 @@ public:
   /**
    * The name of the command as specified in CMakeList.txt.
    */
-  std::string GetName() const CM_OVERRIDE { return "ctest_configure"; }
+  std::string GetName() const override { return "ctest_configure"; }
 
 protected:
-  cmCTestGenericHandler* InitializeHandler() CM_OVERRIDE;
+  cmCTestGenericHandler* InitializeHandler() override;
 
   enum
   {
diff --git a/Source/CTest/cmCTestConfigureHandler.cxx b/Source/CTest/cmCTestConfigureHandler.cxx
index 5d87f3fb4..56a038e38 100644
--- a/Source/CTest/cmCTestConfigureHandler.cxx
+++ b/Source/CTest/cmCTestConfigureHandler.cxx
@@ -73,6 +73,7 @@ int cmCTestConfigureHandler::ProcessHandler()
     if (os) {
       cmXMLWriter xml(os);
       this->CTest->StartXML(xml, this->AppendXML);
+      this->CTest->GenerateSubprojectsOutput(xml);
       xml.StartElement("Configure");
       xml.Element("StartDateTime", start_time);
       xml.Element("StartConfigureTime", start_time_time);
diff --git a/Source/CTest/cmCTestConfigureHandler.h b/Source/CTest/cmCTestConfigureHandler.h
index 2b452829c..680401c84 100644
--- a/Source/CTest/cmCTestConfigureHandler.h
+++ b/Source/CTest/cmCTestConfigureHandler.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestConfigureHandler_h
 #define cmCTestConfigureHandler_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestGenericHandler.h"
 
@@ -19,11 +19,11 @@ public:
   /*
    * The main entry point for this class
    */
-  int ProcessHandler() CM_OVERRIDE;
+  int ProcessHandler() override;
 
   cmCTestConfigureHandler();
 
-  void Initialize() CM_OVERRIDE;
+  void Initialize() override;
 };
 
 #endif
diff --git a/Source/CTest/cmCTestCoverageCommand.cxx b/Source/CTest/cmCTestCoverageCommand.cxx
index 535da586d..d2003baa3 100644
--- a/Source/CTest/cmCTestCoverageCommand.cxx
+++ b/Source/CTest/cmCTestCoverageCommand.cxx
@@ -23,7 +23,7 @@ cmCTestGenericHandler* cmCTestCoverageCommand::InitializeHandler()
     this->CTest->GetInitializedHandler("coverage"));
   if (!handler) {
     this->SetError("internal CTest error. Cannot instantiate test handler");
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // If a LABELS option was given, select only files with the labels.
diff --git a/Source/CTest/cmCTestCoverageCommand.h b/Source/CTest/cmCTestCoverageCommand.h
index 78c4f61f6..1ae2d869a 100644
--- a/Source/CTest/cmCTestCoverageCommand.h
+++ b/Source/CTest/cmCTestCoverageCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestCoverageCommand_h
 #define cmCTestCoverageCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestHandlerCommand.h"
 
@@ -26,7 +26,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestCoverageCommand* ni = new cmCTestCoverageCommand;
     ni->CTest = this->CTest;
@@ -37,15 +37,15 @@ public:
   /**
    * The name of the command as specified in CMakeList.txt.
    */
-  std::string GetName() const CM_OVERRIDE { return "ctest_coverage"; }
+  std::string GetName() const override { return "ctest_coverage"; }
 
   typedef cmCTestHandlerCommand Superclass;
 
 protected:
-  cmCTestGenericHandler* InitializeHandler() CM_OVERRIDE;
+  cmCTestGenericHandler* InitializeHandler() override;
 
-  bool CheckArgumentKeyword(std::string const& arg) CM_OVERRIDE;
-  bool CheckArgumentValue(std::string const& arg) CM_OVERRIDE;
+  bool CheckArgumentKeyword(std::string const& arg) override;
+  bool CheckArgumentValue(std::string const& arg) override;
 
   enum
   {
diff --git a/Source/CTest/cmCTestCoverageHandler.cxx b/Source/CTest/cmCTestCoverageHandler.cxx
index 28fae1c7e..56eeceb0b 100644
--- a/Source/CTest/cmCTestCoverageHandler.cxx
+++ b/Source/CTest/cmCTestCoverageHandler.cxx
@@ -67,12 +67,10 @@ public:
   bool StartProcess()
   {
     std::vector<const char*> args;
-    for (std::vector<std::string>::iterator i =
-           this->CommandLineStrings.begin();
-         i != this->CommandLineStrings.end(); ++i) {
-      args.push_back(i->c_str());
+    for (std::string const& cl : this->CommandLineStrings) {
+      args.push_back(cl.c_str());
     }
-    args.push_back(CM_NULLPTR); // null terminate
+    args.push_back(nullptr); // null terminate
     cmsysProcess_SetCommand(this->Process, &*args.begin());
     if (!this->WorkingDirectory.empty()) {
       cmsysProcess_SetWorkingDirectory(this->Process,
@@ -97,7 +95,7 @@ public:
   {
     cmsysProcess_SetPipeFile(this->Process, cmsysProcess_Pipe_STDERR, fname);
   }
-  int WaitForExit(double* timeout = CM_NULLPTR)
+  int WaitForExit(double* timeout = nullptr)
   {
     this->PipeState = cmsysProcess_WaitForExit(this->Process, timeout);
     return this->PipeState;
@@ -136,10 +134,9 @@ void cmCTestCoverageHandler::CleanCoverageLogFiles(std::ostream& log)
   cmsys::Glob gl;
   gl.FindFiles(logGlob);
   std::vector<std::string> const& files = gl.GetFiles();
-  for (std::vector<std::string>::const_iterator fi = files.begin();
-       fi != files.end(); ++fi) {
-    log << "Removing old coverage log: " << *fi << "\n";
-    cmSystemTools::RemoveFile(*fi);
+  for (std::string const& f : files) {
+    log << "Removing old coverage log: " << f << "\n";
+    cmSystemTools::RemoveFile(f);
   }
 }
 
@@ -188,18 +185,16 @@ void cmCTestCoverageHandler::EndCoverageLogXML(cmXMLWriter& xml)
   this->CTest->EndXML(xml);
 }
 
-bool cmCTestCoverageHandler::ShouldIDoCoverage(const char* file,
-                                               const char* srcDir,
-                                               const char* binDir)
+bool cmCTestCoverageHandler::ShouldIDoCoverage(std::string const& file,
+                                               std::string const& srcDir,
+                                               std::string const& binDir)
 {
   if (this->IsFilteredOut(file)) {
     return false;
   }
 
-  std::vector<cmsys::RegularExpression>::iterator sit;
-  for (sit = this->CustomCoverageExcludeRegex.begin();
-       sit != this->CustomCoverageExcludeRegex.end(); ++sit) {
-    if (sit->find(file)) {
+  for (cmsys::RegularExpression& rx : this->CustomCoverageExcludeRegex) {
+    if (rx.find(file)) {
       cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT, "  File "
                            << file << " is excluded in CTestCustom.ctest"
                            << std::endl;
@@ -319,11 +314,9 @@ int cmCTestCoverageHandler::ProcessHandler()
 
   // setup the regex exclude stuff
   this->CustomCoverageExcludeRegex.clear();
-  std::vector<std::string>::iterator rexIt;
-  for (rexIt = this->CustomCoverageExclude.begin();
-       rexIt != this->CustomCoverageExclude.end(); ++rexIt) {
+  for (std::string const& rex : this->CustomCoverageExclude) {
     this->CustomCoverageExcludeRegex.push_back(
-      cmsys::RegularExpression(rexIt->c_str()));
+      cmsys::RegularExpression(rex.c_str()));
   }
 
   if (this->HandleBullseyeCoverage(&cont)) {
@@ -414,7 +407,6 @@ int cmCTestCoverageHandler::ProcessHandler()
     return -1;
   }
   this->StartCoverageLogXML(covLogXML);
-  cmCTestCoverageHandlerContainer::TotalCoverageMap::iterator fileIterator;
   int cnt = 0;
   long total_tested = 0;
   long total_untested = 0;
@@ -430,8 +422,7 @@ int cmCTestCoverageHandler::ProcessHandler()
   std::vector<std::string> errorsWhileAccumulating;
 
   file_count = 0;
-  for (fileIterator = cont.TotalCoverage.begin();
-       fileIterator != cont.TotalCoverage.end(); ++fileIterator) {
+  for (auto const& file : cont.TotalCoverage) {
     cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT, "." << std::flush,
                        this->Quiet);
     file_count++;
@@ -443,9 +434,9 @@ int cmCTestCoverageHandler::ProcessHandler()
       cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT, "    ", this->Quiet);
     }
 
-    const std::string fullFileName = fileIterator->first;
-    bool shouldIDoCoverage = this->ShouldIDoCoverage(
-      fullFileName.c_str(), sourceDir.c_str(), binaryDir.c_str());
+    const std::string fullFileName = file.first;
+    bool shouldIDoCoverage =
+      this->ShouldIDoCoverage(fullFileName, sourceDir, binaryDir);
     if (!shouldIDoCoverage) {
       cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                          ".NoDartCoverage found, so skip coverage check for: "
@@ -478,7 +469,7 @@ int cmCTestCoverageHandler::ProcessHandler()
     std::string shortFileName =
       this->CTest->GetShortPathToFile(fullFileName.c_str());
     const cmCTestCoverageHandlerContainer::SingleFileCoverageVector& fcov =
-      fileIterator->second;
+      file.second;
     covLogXML.StartElement("File");
     covLogXML.Attribute("Name", fileName);
     covLogXML.Attribute("FullPath", shortFileName);
@@ -554,14 +545,13 @@ int cmCTestCoverageHandler::ProcessHandler()
   }
 
   // Handle all the files in the extra coverage globs that have no cov data
-  for (std::set<std::string>::iterator i = uncovered.begin();
-       i != uncovered.end(); ++i) {
-    std::string fileName = cmSystemTools::GetFilenameName(*i);
-    std::string fullPath = cont.SourceDir + "/" + *i;
+  for (std::string const& u : uncovered) {
+    std::string fileName = cmSystemTools::GetFilenameName(u);
+    std::string fullPath = cont.SourceDir + "/" + u;
 
     covLogXML.StartElement("File");
     covLogXML.Attribute("Name", fileName);
-    covLogXML.Attribute("FullPath", *i);
+    covLogXML.Attribute("FullPath", u);
     covLogXML.StartElement("Report");
 
     cmsys::ifstream ifs(fullPath.c_str());
@@ -577,7 +567,7 @@ int cmCTestCoverageHandler::ProcessHandler()
     int untested = 0;
     std::string line;
     cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
-                       "Actually performing coverage for: " << *i << std::endl,
+                       "Actually performing coverage for: " << u << std::endl,
                        this->Quiet);
     while (cmSystemTools::GetLineFromStream(ifs, line)) {
       covLogXML.StartElement("Line");
@@ -593,13 +583,13 @@ int cmCTestCoverageHandler::ProcessHandler()
     total_untested += untested;
     covSumXML.StartElement("File");
     covSumXML.Attribute("Name", fileName);
-    covSumXML.Attribute("FullPath", *i);
+    covSumXML.Attribute("FullPath", u);
     covSumXML.Attribute("Covered", "true");
     covSumXML.Element("LOCTested", 0);
     covSumXML.Element("LOCUnTested", untested);
     covSumXML.Element("PercentCoverage", 0);
     covSumXML.Element("CoverageMetric", 0);
-    this->WriteXMLLabels(covSumXML, *i);
+    this->WriteXMLLabels(covSumXML, u);
     covSumXML.EndElement(); // File
   }
 
@@ -610,10 +600,8 @@ int cmCTestCoverageHandler::ProcessHandler()
     cmCTestLog(this->CTest, ERROR_MESSAGE, std::endl);
     cmCTestLog(this->CTest, ERROR_MESSAGE,
                "Error(s) while accumulating results:" << std::endl);
-    std::vector<std::string>::iterator erIt;
-    for (erIt = errorsWhileAccumulating.begin();
-         erIt != errorsWhileAccumulating.end(); ++erIt) {
-      cmCTestLog(this->CTest, ERROR_MESSAGE, "  " << *erIt << std::endl);
+    for (std::string const& er : errorsWhileAccumulating) {
+      cmCTestLog(this->CTest, ERROR_MESSAGE, "  " << er << std::endl);
     }
   }
 
@@ -670,17 +658,14 @@ void cmCTestCoverageHandler::PopulateCustomVectors(cmMakefile* mf)
                                     this->CustomCoverageExclude);
   this->CTest->PopulateCustomVector(mf, "CTEST_EXTRA_COVERAGE_GLOB",
                                     this->ExtraCoverageGlobs);
-  std::vector<std::string>::iterator it;
-  for (it = this->CustomCoverageExclude.begin();
-       it != this->CustomCoverageExclude.end(); ++it) {
+  for (std::string const& cce : this->CustomCoverageExclude) {
     cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
-                       " Add coverage exclude: " << *it << std::endl,
+                       " Add coverage exclude: " << cce << std::endl,
                        this->Quiet);
   }
-  for (it = this->ExtraCoverageGlobs.begin();
-       it != this->ExtraCoverageGlobs.end(); ++it) {
+  for (std::string const& ecg : this->ExtraCoverageGlobs) {
     cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
-                       " Add coverage glob: " << *it << std::endl,
+                       " Add coverage glob: " << ecg << std::endl,
                        this->Quiet);
   }
 }
@@ -877,6 +862,24 @@ int cmCTestCoverageHandler::HandleDelphiCoverage(
   return static_cast<int>(cont->TotalCoverage.size());
 }
 
+static std::string joinCommandLine(const std::vector<std::string>& args)
+{
+  std::string ret;
+
+  for (std::string const& s : args) {
+    if (s.find(' ') == std::string::npos) {
+      ret += s + ' ';
+    } else {
+      ret += "\"" + s + "\" ";
+    }
+  }
+
+  // drop trailing whitespace
+  ret.erase(ret.size() - 1);
+
+  return ret;
+}
+
 int cmCTestCoverageHandler::HandleBlanketJSCoverage(
   cmCTestCoverageHandlerContainer* cont)
 {
@@ -895,12 +898,12 @@ int cmCTestCoverageHandler::HandleBlanketJSCoverage(
   // Blanket.js output. Check for the "node-jscoverage"
   // string on the second line
   std::string line;
-  for (unsigned int fileEntry = 0; fileEntry < files.size(); fileEntry++) {
-    cmsys::ifstream in(files[fileEntry].c_str());
+  for (std::string const& fileEntry : files) {
+    cmsys::ifstream in(fileEntry.c_str());
     cmSystemTools::GetLineFromStream(in, line);
     cmSystemTools::GetLineFromStream(in, line);
     if (line.find("node-jscoverage") != std::string::npos) {
-      blanketFiles.push_back(files[fileEntry]);
+      blanketFiles.push_back(fileEntry);
     }
   }
   //  Take all files with the node-jscoverage string and parse those
@@ -961,7 +964,6 @@ int cmCTestCoverageHandler::HandleGCovCoverage(
 
   std::vector<std::string> files;
   this->FindGCovFiles(files);
-  std::vector<std::string>::iterator it;
 
   if (files.empty()) {
     cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
@@ -992,19 +994,26 @@ int cmCTestCoverageHandler::HandleGCovCoverage(
   cmCTestCoverageHandlerLocale locale_C;
   static_cast<void>(locale_C);
 
+  std::vector<std::string> basecovargs =
+    cmSystemTools::ParseArguments(gcovExtraFlags.c_str());
+  basecovargs.insert(basecovargs.begin(), gcovCommand);
+  basecovargs.push_back("-o");
+
   // files is a list of *.da and *.gcda files with coverage data in them.
   // These are binary files that you give as input to gcov so that it will
   // give us text output we can analyze to summarize coverage.
   //
-  for (it = files.begin(); it != files.end(); ++it) {
+  for (std::string const& f : files) {
     cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT, "." << std::flush,
                        this->Quiet);
 
     // Call gcov to get coverage data for this *.gcda file:
     //
-    std::string fileDir = cmSystemTools::GetFilenamePath(*it);
-    std::string command = "\"" + gcovCommand + "\" " + gcovExtraFlags + " " +
-      "-o \"" + fileDir + "\" " + "\"" + *it + "\"";
+    std::string fileDir = cmSystemTools::GetFilenamePath(f);
+    std::vector<std::string> covargs = basecovargs;
+    covargs.push_back(fileDir);
+    covargs.push_back(f);
+    const std::string command = joinCommandLine(covargs);
 
     cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                        command << std::endl, this->Quiet);
@@ -1014,15 +1023,14 @@ int cmCTestCoverageHandler::HandleGCovCoverage(
     int retVal = 0;
     *cont->OFS << "* Run coverage for: " << fileDir << std::endl;
     *cont->OFS << "  Command: " << command << std::endl;
-    int res =
-      this->CTest->RunCommand(command.c_str(), &output, &errors, &retVal,
-                              tempDir.c_str(), 0 /*this->TimeOut*/);
+    int res = this->CTest->RunCommand(covargs, &output, &errors, &retVal,
+                                      tempDir.c_str(), 0 /*this->TimeOut*/);
 
     *cont->OFS << "  Output: " << output << std::endl;
     *cont->OFS << "  Errors: " << errors << std::endl;
     if (!res) {
       cmCTestLog(this->CTest, ERROR_MESSAGE,
-                 "Problem running coverage on file: " << *it << std::endl);
+                 "Problem running coverage on file: " << f << std::endl);
       cmCTestLog(this->CTest, ERROR_MESSAGE,
                  "Command produced error: " << errors << std::endl);
       cont->Error++;
@@ -1030,7 +1038,7 @@ int cmCTestCoverageHandler::HandleGCovCoverage(
     }
     if (retVal != 0) {
       cmCTestLog(this->CTest, ERROR_MESSAGE, "Coverage command returned: "
-                   << retVal << " while processing: " << *it << std::endl);
+                   << retVal << " while processing: " << f << std::endl);
       cmCTestLog(this->CTest, ERROR_MESSAGE,
                  "Command produced error: " << cont->Error << std::endl);
     }
@@ -1044,20 +1052,19 @@ int cmCTestCoverageHandler::HandleGCovCoverage(
       this->Quiet);
 
     std::vector<std::string> lines;
-    std::vector<std::string>::iterator line;
 
     cmSystemTools::Split(output.c_str(), lines);
 
-    for (line = lines.begin(); line != lines.end(); ++line) {
+    for (std::string const& line : lines) {
       std::string sourceFile;
       std::string gcovFile;
 
       cmCTestOptionalLog(this->CTest, DEBUG,
-                         "Line: [" << *line << "]" << std::endl, this->Quiet);
+                         "Line: [" << line << "]" << std::endl, this->Quiet);
 
-      if (line->empty()) {
+      if (line.empty()) {
         // Ignore empty line; probably style 2
-      } else if (st1re1.find(line->c_str())) {
+      } else if (st1re1.find(line.c_str())) {
         if (gcovStyle == 0) {
           gcovStyle = 1;
         }
@@ -1068,9 +1075,9 @@ int cmCTestCoverageHandler::HandleGCovCoverage(
           break;
         }
 
-        actualSourceFile = "";
+        actualSourceFile.clear();
         sourceFile = st1re1.match(2);
-      } else if (st1re2.find(line->c_str())) {
+      } else if (st1re2.find(line.c_str())) {
         if (gcovStyle == 0) {
           gcovStyle = 1;
         }
@@ -1082,7 +1089,7 @@ int cmCTestCoverageHandler::HandleGCovCoverage(
         }
 
         gcovFile = st1re2.match(1);
-      } else if (st2re1.find(line->c_str())) {
+      } else if (st2re1.find(line.c_str())) {
         if (gcovStyle == 0) {
           gcovStyle = 2;
         }
@@ -1093,9 +1100,9 @@ int cmCTestCoverageHandler::HandleGCovCoverage(
           break;
         }
 
-        actualSourceFile = "";
+        actualSourceFile.clear();
         sourceFile = st2re1.match(1);
-      } else if (st2re2.find(line->c_str())) {
+      } else if (st2re2.find(line.c_str())) {
         if (gcovStyle == 0) {
           gcovStyle = 2;
         }
@@ -1105,7 +1112,7 @@ int cmCTestCoverageHandler::HandleGCovCoverage(
           cont->Error++;
           break;
         }
-      } else if (st2re3.find(line->c_str())) {
+      } else if (st2re3.find(line.c_str())) {
         if (gcovStyle == 0) {
           gcovStyle = 2;
         }
@@ -1117,7 +1124,7 @@ int cmCTestCoverageHandler::HandleGCovCoverage(
         }
 
         gcovFile = st2re3.match(2);
-      } else if (st2re4.find(line->c_str())) {
+      } else if (st2re4.find(line.c_str())) {
         if (gcovStyle == 0) {
           gcovStyle = 2;
         }
@@ -1132,7 +1139,7 @@ int cmCTestCoverageHandler::HandleGCovCoverage(
                            "Warning: " << st2re4.match(1)
                                        << " had unexpected EOF" << std::endl,
                            this->Quiet);
-      } else if (st2re5.find(line->c_str())) {
+      } else if (st2re5.find(line.c_str())) {
         if (gcovStyle == 0) {
           gcovStyle = 2;
         }
@@ -1146,7 +1153,7 @@ int cmCTestCoverageHandler::HandleGCovCoverage(
         cmCTestOptionalLog(this->CTest, WARNING, "Warning: Cannot open file: "
                              << st2re5.match(1) << std::endl,
                            this->Quiet);
-      } else if (st2re6.find(line->c_str())) {
+      } else if (st2re6.find(line.c_str())) {
         if (gcovStyle == 0) {
           gcovStyle = 2;
         }
@@ -1164,10 +1171,10 @@ int cmCTestCoverageHandler::HandleGCovCoverage(
       } else {
         // gcov 4.7 can have output lines saying "No executable lines" and
         // "Removing 'filename.gcov'"... Don't log those as "errors."
-        if (*line != "No executable lines" &&
-            !cmSystemTools::StringStartsWith(line->c_str(), "Removing ")) {
+        if (line != "No executable lines" &&
+            !cmSystemTools::StringStartsWith(line.c_str(), "Removing ")) {
           cmCTestLog(this->CTest, ERROR_MESSAGE, "Unknown gcov output line: ["
-                       << *line << "]" << std::endl);
+                       << line << "]" << std::endl);
           cont->Error++;
           // abort();
         }
@@ -1235,11 +1242,11 @@ int cmCTestCoverageHandler::HandleGCovCoverage(
           }
         }
 
-        actualSourceFile = "";
+        actualSourceFile.clear();
       }
 
       if (!sourceFile.empty() && actualSourceFile.empty()) {
-        gcovFile = "";
+        gcovFile.clear();
 
         // Is it in the source dir or the binary dir?
         //
@@ -1332,7 +1339,6 @@ int cmCTestCoverageHandler::HandleLCovCoverage(
                "Error while finding LCov files.\n");
     return 0;
   }
-  std::vector<std::string>::iterator it;
 
   if (files.empty()) {
     cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
@@ -1357,14 +1363,18 @@ int cmCTestCoverageHandler::HandleLCovCoverage(
   cmCTestCoverageHandlerLocale locale_C;
   static_cast<void>(locale_C);
 
+  std::vector<std::string> covargs =
+    cmSystemTools::ParseArguments(lcovExtraFlags.c_str());
+  covargs.insert(covargs.begin(), lcovCommand);
+  const std::string command = joinCommandLine(covargs);
+
   // In intel compiler we have to call codecov only once in each executable
   // directory. It collects all *.dyn files to generate .dpi file.
-  for (it = files.begin(); it != files.end(); ++it) {
+  for (std::string const& f : files) {
     cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT, "." << std::flush,
                        this->Quiet);
-    std::string fileDir = cmSystemTools::GetFilenamePath(*it);
+    std::string fileDir = cmSystemTools::GetFilenamePath(f);
     cmWorkingDirectory workdir(fileDir);
-    std::string command = "\"" + lcovCommand + "\" " + lcovExtraFlags + " ";
 
     cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                        "Current coverage dir: " << fileDir << std::endl,
@@ -1377,15 +1387,14 @@ int cmCTestCoverageHandler::HandleLCovCoverage(
     int retVal = 0;
     *cont->OFS << "* Run coverage for: " << fileDir << std::endl;
     *cont->OFS << "  Command: " << command << std::endl;
-    int res =
-      this->CTest->RunCommand(command.c_str(), &output, &errors, &retVal,
-                              fileDir.c_str(), 0 /*this->TimeOut*/);
+    int res = this->CTest->RunCommand(covargs, &output, &errors, &retVal,
+                                      fileDir.c_str(), 0 /*this->TimeOut*/);
 
     *cont->OFS << "  Output: " << output << std::endl;
     *cont->OFS << "  Errors: " << errors << std::endl;
     if (!res) {
       cmCTestLog(this->CTest, ERROR_MESSAGE,
-                 "Problem running coverage on file: " << *it << std::endl);
+                 "Problem running coverage on file: " << f << std::endl);
       cmCTestLog(this->CTest, ERROR_MESSAGE,
                  "Command produced error: " << errors << std::endl);
       cont->Error++;
@@ -1393,7 +1402,7 @@ int cmCTestCoverageHandler::HandleLCovCoverage(
     }
     if (retVal != 0) {
       cmCTestLog(this->CTest, ERROR_MESSAGE, "Coverage command returned: "
-                   << retVal << " while processing: " << *it << std::endl);
+                   << retVal << " while processing: " << f << std::endl);
       cmCTestLog(this->CTest, ERROR_MESSAGE,
                  "Command produced error: " << cont->Error << std::endl);
     }
@@ -1407,15 +1416,14 @@ int cmCTestCoverageHandler::HandleLCovCoverage(
       this->Quiet);
 
     std::vector<std::string> lines;
-    std::vector<std::string>::iterator line;
 
     cmSystemTools::Split(output.c_str(), lines);
 
-    for (line = lines.begin(); line != lines.end(); ++line) {
+    for (std::string const& line : lines) {
       std::string sourceFile;
       std::string lcovFile;
 
-      if (line->empty()) {
+      if (line.empty()) {
         // Ignore empty line
       }
       // Look for LCOV files in binary directory
@@ -1438,9 +1446,8 @@ int cmCTestCoverageHandler::HandleLCovCoverage(
       lcovFiles.insert(lcovFiles.end(), gl.GetFiles().begin(),
                        gl.GetFiles().end());
 
-      for (std::vector<std::string>::iterator a = lcovFiles.begin();
-           a != lcovFiles.end(); ++a) {
-        lcovFile = *a;
+      for (std::string const& file : lcovFiles) {
+        lcovFile = file;
         cmsys::ifstream srcead(lcovFile.c_str());
         if (!srcead) {
           cmCTestLog(this->CTest, ERROR_MESSAGE,
@@ -1462,10 +1469,9 @@ int cmCTestCoverageHandler::HandleLCovCoverage(
         sourceFile = srcname;
         actualSourceFile = srcname;
 
-        for (std::vector<std::string>::iterator t = lcovFiles.begin();
-             t != lcovFiles.end(); ++t) {
+        for (std::string const& t : lcovFiles) {
           cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
-                             "Found LCOV File: " << *t << std::endl,
+                             "Found LCOV File: " << t << std::endl,
                              this->Quiet);
         }
         cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
@@ -1537,7 +1543,7 @@ int cmCTestCoverageHandler::HandleLCovCoverage(
             }
           }
 
-          actualSourceFile = "";
+          actualSourceFile.clear();
         }
       }
     }
@@ -1562,10 +1568,9 @@ void cmCTestCoverageHandler::FindGCovFiles(std::vector<std::string>& files)
   gl.RecurseOn();
   gl.RecurseThroughSymlinksOff();
 
-  for (LabelMapType::const_iterator lmi = this->TargetDirs.begin();
-       lmi != this->TargetDirs.end(); ++lmi) {
+  for (auto const& lm : this->TargetDirs) {
     // Skip targets containing no interesting labels.
-    if (!this->IntersectsFilter(lmi->second)) {
+    if (!this->IntersectsFilter(lm.second)) {
       continue;
     }
 
@@ -1573,12 +1578,12 @@ void cmCTestCoverageHandler::FindGCovFiles(std::vector<std::string>& files)
     // support directory.
     cmCTestOptionalLog(
       this->CTest, HANDLER_VERBOSE_OUTPUT,
-      "   globbing for coverage in: " << lmi->first << std::endl, this->Quiet);
-    std::string daGlob = lmi->first;
+      "   globbing for coverage in: " << lm.first << std::endl, this->Quiet);
+    std::string daGlob = lm.first;
     daGlob += "/*.da";
     gl.FindFiles(daGlob);
     files.insert(files.end(), gl.GetFiles().begin(), gl.GetFiles().end());
-    daGlob = lmi->first;
+    daGlob = lm.first;
     daGlob += "/*.gcda";
     gl.FindFiles(daGlob);
     files.insert(files.end(), gl.GetFiles().begin(), gl.GetFiles().end());
@@ -1641,14 +1646,13 @@ int cmCTestCoverageHandler::HandleTracePyCoverage(
   std::string tempDir = testingDir + "/CoverageInfo";
   cmSystemTools::MakeDirectory(tempDir.c_str());
 
-  std::vector<std::string>::iterator fileIt;
   int file_count = 0;
-  for (fileIt = files.begin(); fileIt != files.end(); ++fileIt) {
-    std::string fileName = this->FindFile(cont, *fileIt);
+  for (std::string const& file : files) {
+    std::string fileName = this->FindFile(cont, file);
     if (fileName.empty()) {
       cmCTestLog(this->CTest, ERROR_MESSAGE,
                  "Cannot find source Python file corresponding to: "
-                   << *fileIt << std::endl);
+                   << file << std::endl);
       continue;
     }
 
@@ -1660,11 +1664,11 @@ int cmCTestCoverageHandler::HandleTracePyCoverage(
     cmCTestCoverageHandlerContainer::SingleFileCoverageVector* vec =
       &cont->TotalCoverage[actualSourceFile];
     cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
-                       "   in file: " << *fileIt << std::endl, this->Quiet);
-    cmsys::ifstream ifile(fileIt->c_str());
+                       "   in file: " << file << std::endl, this->Quiet);
+    cmsys::ifstream ifile(file.c_str());
     if (!ifile) {
       cmCTestLog(this->CTest, ERROR_MESSAGE,
-                 "Cannot open file: " << *fileIt << std::endl);
+                 "Cannot open file: " << file << std::endl);
     } else {
       long cnt = -1;
       std::string nl;
@@ -1761,7 +1765,7 @@ const char* bullseyeHelp[] = {
   "      condition evaluated true or false, respectively.",
   "    * A k indicates a constant decision or condition.",
   "    * The slash / means this probe is excluded from summary results. ",
-  CM_NULLPTR
+  nullptr
 };
 }
 
@@ -1789,7 +1793,7 @@ int cmCTestCoverageHandler::RunBullseyeCoverageBranch(
   cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                      "run covbr: " << std::endl, this->Quiet);
 
-  if (!this->RunBullseyeCommand(cont, "covbr", CM_NULLPTR, outputFile)) {
+  if (!this->RunBullseyeCommand(cont, "covbr", nullptr, outputFile)) {
     cmCTestLog(this->CTest, ERROR_MESSAGE, "error running covbr for."
                  << "\n");
     return -1;
@@ -1862,7 +1866,7 @@ int cmCTestCoverageHandler::RunBullseyeCoverageBranch(
         covLogXML.StartElement("Report");
         // write the bullseye header
         line = 0;
-        for (int k = 0; bullseyeHelp[k] != CM_NULLPTR; ++k) {
+        for (int k = 0; bullseyeHelp[k] != nullptr; ++k) {
           covLogXML.StartElement("Line");
           covLogXML.Attribute("Number", line);
           covLogXML.Attribute("Count", -1);
@@ -2014,8 +2018,8 @@ int cmCTestCoverageHandler::RunBullseyeSourceSummary(
         file += sourceFile;
       }
       file = cmSystemTools::CollapseFullPath(file);
-      bool shouldIDoCoverage = this->ShouldIDoCoverage(
-        file.c_str(), cont->SourceDir.c_str(), cont->BinaryDir.c_str());
+      bool shouldIDoCoverage =
+        this->ShouldIDoCoverage(file, cont->SourceDir, cont->BinaryDir);
       if (!shouldIDoCoverage) {
         cmCTestOptionalLog(
           this->CTest, HANDLER_VERBOSE_OUTPUT,
@@ -2256,9 +2260,8 @@ void cmCTestCoverageHandler::WriteXMLLabels(cmXMLWriter& xml,
   LabelMapType::const_iterator li = this->SourceLabels.find(source);
   if (li != this->SourceLabels.end() && !li->second.empty()) {
     xml.StartElement("Labels");
-    for (LabelSet::const_iterator lsi = li->second.begin();
-         lsi != li->second.end(); ++lsi) {
-      xml.Element("Label", this->Labels[*lsi]);
+    for (auto const& ls : li->second) {
+      xml.Element("Label", this->Labels[ls]);
     }
     xml.EndElement(); // Labels
   }
@@ -2268,9 +2271,8 @@ void cmCTestCoverageHandler::SetLabelFilter(
   std::set<std::string> const& labels)
 {
   this->LabelFilter.clear();
-  for (std::set<std::string>::const_iterator li = labels.begin();
-       li != labels.end(); ++li) {
-    this->LabelFilter.insert(this->GetLabelId(*li));
+  for (std::string const& l : labels) {
+    this->LabelFilter.insert(this->GetLabelId(l));
   }
 }
 
@@ -2310,29 +2312,23 @@ std::set<std::string> cmCTestCoverageHandler::FindUncoveredFiles(
 {
   std::set<std::string> extraMatches;
 
-  for (std::vector<std::string>::iterator i = this->ExtraCoverageGlobs.begin();
-       i != this->ExtraCoverageGlobs.end(); ++i) {
+  for (std::string const& ecg : this->ExtraCoverageGlobs) {
     cmsys::Glob gl;
     gl.RecurseOn();
     gl.RecurseThroughSymlinksOff();
-    std::string glob = cont->SourceDir + "/" + *i;
+    std::string glob = cont->SourceDir + "/" + ecg;
     gl.FindFiles(glob);
     std::vector<std::string> files = gl.GetFiles();
-    for (std::vector<std::string>::iterator f = files.begin();
-         f != files.end(); ++f) {
-      if (this->ShouldIDoCoverage(f->c_str(), cont->SourceDir.c_str(),
-                                  cont->BinaryDir.c_str())) {
-        extraMatches.insert(this->CTest->GetShortPathToFile(f->c_str()));
+    for (std::string const& f : files) {
+      if (this->ShouldIDoCoverage(f, cont->SourceDir, cont->BinaryDir)) {
+        extraMatches.insert(this->CTest->GetShortPathToFile(f.c_str()));
       }
     }
   }
 
   if (!extraMatches.empty()) {
-    for (cmCTestCoverageHandlerContainer::TotalCoverageMap::iterator i =
-           cont->TotalCoverage.begin();
-         i != cont->TotalCoverage.end(); ++i) {
-      std::string shortPath =
-        this->CTest->GetShortPathToFile(i->first.c_str());
+    for (auto const& i : cont->TotalCoverage) {
+      std::string shortPath = this->CTest->GetShortPathToFile(i.first.c_str());
       extraMatches.erase(shortPath);
     }
   }
diff --git a/Source/CTest/cmCTestCoverageHandler.h b/Source/CTest/cmCTestCoverageHandler.h
index 933f60660..6492fe951 100644
--- a/Source/CTest/cmCTestCoverageHandler.h
+++ b/Source/CTest/cmCTestCoverageHandler.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestCoverageHandler_h
 #define cmCTestCoverageHandler_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestGenericHandler.h"
 
@@ -42,23 +42,23 @@ public:
   /*
    * The main entry point for this class
    */
-  int ProcessHandler() CM_OVERRIDE;
+  int ProcessHandler() override;
 
   cmCTestCoverageHandler();
 
-  void Initialize() CM_OVERRIDE;
+  void Initialize() override;
 
   /**
    * This method is called when reading CTest custom file
    */
-  void PopulateCustomVectors(cmMakefile* mf) CM_OVERRIDE;
+  void PopulateCustomVectors(cmMakefile* mf) override;
 
   /** Report coverage only for sources with these labels.  */
   void SetLabelFilter(std::set<std::string> const& labels);
 
 private:
-  bool ShouldIDoCoverage(const char* file, const char* srcDir,
-                         const char* binDir);
+  bool ShouldIDoCoverage(std::string const& file, std::string const& srcDir,
+                         std::string const& binDir);
   void CleanCoverageLogFiles(std::ostream& log);
   bool StartCoverageLogFile(cmGeneratedFileStream& ostr, int logFileCount);
   void EndCoverageLogFile(cmGeneratedFileStream& ostr, int logFileCount);
diff --git a/Source/CTest/cmCTestCurl.cxx b/Source/CTest/cmCTestCurl.cxx
index b80ea5ade..7b5ea6005 100644
--- a/Source/CTest/cmCTestCurl.cxx
+++ b/Source/CTest/cmCTestCurl.cxx
@@ -5,7 +5,6 @@
 #include "cmCTest.h"
 #include "cmSystemTools.h"
 
-#include "cmConfigure.h"
 #include <ostream>
 #include <stdio.h>
 
@@ -42,7 +41,7 @@ namespace {
 size_t curlWriteMemoryCallback(void* ptr, size_t size, size_t nmemb,
                                void* data)
 {
-  int realsize = (int)(size * nmemb);
+  int realsize = static_cast<int>(size * nmemb);
 
   std::vector<char>* vec = static_cast<std::vector<char>*>(data);
   const char* chPtr = static_cast<char*>(ptr);
@@ -62,12 +61,11 @@ size_t curlDebugCallback(CURL* /*unused*/, curl_infotype /*unused*/,
 
 void cmCTestCurl::SetCurlOptions(std::vector<std::string> const& args)
 {
-  for (std::vector<std::string>::const_iterator i = args.begin();
-       i != args.end(); ++i) {
-    if (*i == "CURLOPT_SSL_VERIFYPEER_OFF") {
+  for (std::string const& arg : args) {
+    if (arg == "CURLOPT_SSL_VERIFYPEER_OFF") {
       this->VerifyPeerOff = true;
     }
-    if (*i == "CURLOPT_SSL_VERIFYHOST_OFF") {
+    if (arg == "CURLOPT_SSL_VERIFYHOST_OFF") {
       this->VerifyHostOff = true;
     }
   }
@@ -111,7 +109,7 @@ bool cmCTestCurl::UploadFile(std::string const& local_file,
                              std::string const& url, std::string const& fields,
                              std::string& response)
 {
-  response = "";
+  response.clear();
   if (!this->InitCurl()) {
     cmCTestLog(this->CTest, ERROR_MESSAGE, "Initialization of curl failed");
     return false;
@@ -145,20 +143,19 @@ bool cmCTestCurl::UploadFile(std::string const& local_file,
   ::curl_easy_setopt(this->Curl, CURLOPT_DEBUGFUNCTION, curlDebugCallback);
   // Set Content-Type to satisfy fussy modsecurity rules.
   struct curl_slist* headers =
-    ::curl_slist_append(CM_NULLPTR, "Content-Type: text/xml");
+    ::curl_slist_append(nullptr, "Content-Type: text/xml");
   // Add any additional headers that the user specified.
-  for (std::vector<std::string>::const_iterator h = this->HttpHeaders.begin();
-       h != this->HttpHeaders.end(); ++h) {
+  for (std::string const& h : this->HttpHeaders) {
     cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT,
-                       "   Add HTTP Header: \"" << *h << "\"" << std::endl,
+                       "   Add HTTP Header: \"" << h << "\"" << std::endl,
                        this->Quiet);
-    headers = ::curl_slist_append(headers, h->c_str());
+    headers = ::curl_slist_append(headers, h.c_str());
   }
   ::curl_easy_setopt(this->Curl, CURLOPT_HTTPHEADER, headers);
   std::vector<char> responseData;
   std::vector<char> debugData;
-  ::curl_easy_setopt(this->Curl, CURLOPT_FILE, (void*)&responseData);
-  ::curl_easy_setopt(this->Curl, CURLOPT_DEBUGDATA, (void*)&debugData);
+  ::curl_easy_setopt(this->Curl, CURLOPT_FILE, &responseData);
+  ::curl_easy_setopt(this->Curl, CURLOPT_DEBUGDATA, &debugData);
   ::curl_easy_setopt(this->Curl, CURLOPT_FAILONERROR, 1);
   // Now run off and do what you've been told!
   ::curl_easy_perform(this->Curl);
@@ -188,7 +185,7 @@ bool cmCTestCurl::UploadFile(std::string const& local_file,
 bool cmCTestCurl::HttpRequest(std::string const& url,
                               std::string const& fields, std::string& response)
 {
-  response = "";
+  response.clear();
   cmCTestOptionalLog(this->CTest, DEBUG, "HttpRequest\n"
                        << "url: " << url << "\n"
                        << "fields " << fields << "\n",
@@ -207,20 +204,18 @@ bool cmCTestCurl::HttpRequest(std::string const& url,
   ::curl_easy_setopt(this->Curl, CURLOPT_DEBUGFUNCTION, curlDebugCallback);
   std::vector<char> responseData;
   std::vector<char> debugData;
-  ::curl_easy_setopt(this->Curl, CURLOPT_FILE, (void*)&responseData);
-  ::curl_easy_setopt(this->Curl, CURLOPT_DEBUGDATA, (void*)&debugData);
+  ::curl_easy_setopt(this->Curl, CURLOPT_FILE, &responseData);
+  ::curl_easy_setopt(this->Curl, CURLOPT_DEBUGDATA, &debugData);
   ::curl_easy_setopt(this->Curl, CURLOPT_FAILONERROR, 1);
 
   // Add headers if any were specified.
-  struct curl_slist* headers = CM_NULLPTR;
+  struct curl_slist* headers = nullptr;
   if (!this->HttpHeaders.empty()) {
-    for (std::vector<std::string>::const_iterator h =
-           this->HttpHeaders.begin();
-         h != this->HttpHeaders.end(); ++h) {
+    for (std::string const& h : this->HttpHeaders) {
       cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT,
-                         "   Add HTTP Header: \"" << *h << "\"" << std::endl,
+                         "   Add HTTP Header: \"" << h << "\"" << std::endl,
                          this->Quiet);
-      headers = ::curl_slist_append(headers, h->c_str());
+      headers = ::curl_slist_append(headers, h.c_str());
     }
   }
 
@@ -245,10 +240,10 @@ bool cmCTestCurl::HttpRequest(std::string const& url,
 
 void cmCTestCurl::SetProxyType()
 {
-  this->HTTPProxy = "";
+  this->HTTPProxy.clear();
   // this is the default
   this->HTTPProxyType = CURLPROXY_HTTP;
-  this->HTTPProxyAuth = "";
+  this->HTTPProxyAuth.clear();
   if (cmSystemTools::GetEnv("HTTP_PROXY", this->HTTPProxy)) {
     std::string port;
     if (cmSystemTools::GetEnv("HTTP_PROXY_PORT", port)) {
diff --git a/Source/CTest/cmCTestEmptyBinaryDirectoryCommand.h b/Source/CTest/cmCTestEmptyBinaryDirectoryCommand.h
index 503ed234d..9425ece95 100644
--- a/Source/CTest/cmCTestEmptyBinaryDirectoryCommand.h
+++ b/Source/CTest/cmCTestEmptyBinaryDirectoryCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestEmptyBinaryDirectoryCommand_h
 #define cmCTestEmptyBinaryDirectoryCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestCommand.h"
 
@@ -27,7 +27,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestEmptyBinaryDirectoryCommand* ni =
       new cmCTestEmptyBinaryDirectoryCommand;
@@ -41,7 +41,7 @@ public:
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/CTest/cmCTestGIT.cxx b/Source/CTest/cmCTestGIT.cxx
index 230aedf3b..8cb795e22 100644
--- a/Source/CTest/cmCTestGIT.cxx
+++ b/Source/CTest/cmCTestGIT.cxx
@@ -46,7 +46,7 @@ public:
 
 private:
   std::string& Line1;
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     // Only the first line is of interest.
     this->Line1 = this->Line;
@@ -58,8 +58,8 @@ std::string cmCTestGIT::GetWorkingRevision()
 {
   // Run plumbing "git rev-list" to get work tree revision.
   const char* git = this->CommandLineTool.c_str();
-  const char* git_rev_list[] = { git,    "rev-list", "-n",      "1",
-                                 "HEAD", "--",       CM_NULLPTR };
+  const char* git_rev_list[] = { git,    "rev-list", "-n",   "1",
+                                 "HEAD", "--",       nullptr };
   std::string rev;
   OneLineParser out(this, "rl-out> ", rev);
   OutputLogger err(this->Log, "rl-err> ");
@@ -90,11 +90,11 @@ std::string cmCTestGIT::FindGitDir()
 
   // Run "git rev-parse --git-dir" to locate the real .git directory.
   const char* git = this->CommandLineTool.c_str();
-  char const* git_rev_parse[] = { git, "rev-parse", "--git-dir", CM_NULLPTR };
+  char const* git_rev_parse[] = { git, "rev-parse", "--git-dir", nullptr };
   std::string git_dir_line;
   OneLineParser rev_parse_out(this, "rev-parse-out> ", git_dir_line);
   OutputLogger rev_parse_err(this->Log, "rev-parse-err> ");
-  if (this->RunChild(git_rev_parse, &rev_parse_out, &rev_parse_err, CM_NULLPTR,
+  if (this->RunChild(git_rev_parse, &rev_parse_out, &rev_parse_err, nullptr,
                      cmProcessOutput::UTF8)) {
     git_dir = git_dir_line;
   }
@@ -118,7 +118,7 @@ std::string cmCTestGIT::FindGitDir()
                                 0 };
       OneLineParser cygpath_out(this, "cygpath-out> ", git_dir_line);
       OutputLogger cygpath_err(this->Log, "cygpath-err> ");
-      if (this->RunChild(cygpath, &cygpath_out, &cygpath_err, CM_NULLPTR,
+      if (this->RunChild(cygpath, &cygpath_out, &cygpath_err, nullptr,
                          cmProcessOutput::UTF8)) {
         git_dir = git_dir_line;
       }
@@ -134,12 +134,11 @@ std::string cmCTestGIT::FindTopDir()
 
   // Run "git rev-parse --show-cdup" to locate the top of the tree.
   const char* git = this->CommandLineTool.c_str();
-  char const* git_rev_parse[] = { git, "rev-parse", "--show-cdup",
-                                  CM_NULLPTR };
+  char const* git_rev_parse[] = { git, "rev-parse", "--show-cdup", nullptr };
   std::string cdup;
   OneLineParser rev_parse_out(this, "rev-parse-out> ", cdup);
   OutputLogger rev_parse_err(this->Log, "rev-parse-err> ");
-  if (this->RunChild(git_rev_parse, &rev_parse_out, &rev_parse_err, CM_NULLPTR,
+  if (this->RunChild(git_rev_parse, &rev_parse_out, &rev_parse_err, nullptr,
                      cmProcessOutput::UTF8) &&
       !cdup.empty()) {
     top_dir += "/";
@@ -164,13 +163,12 @@ bool cmCTestGIT::UpdateByFetchAndReset()
     opts = this->CTest->GetCTestConfiguration("GITUpdateOptions");
   }
   std::vector<std::string> args = cmSystemTools::ParseArguments(opts.c_str());
-  for (std::vector<std::string>::const_iterator ai = args.begin();
-       ai != args.end(); ++ai) {
-    git_fetch.push_back(ai->c_str());
+  for (std::string const& arg : args) {
+    git_fetch.push_back(arg.c_str());
   }
 
   // Sentinel argument.
-  git_fetch.push_back(CM_NULLPTR);
+  git_fetch.push_back(nullptr);
 
   // Fetch upstream refs.
   OutputLogger fetch_out(this->Log, "fetch-out> ");
@@ -205,8 +203,7 @@ bool cmCTestGIT::UpdateByFetchAndReset()
   }
 
   // Reset the local branch to point at that tracked from upstream.
-  char const* git_reset[] = { git, "reset", "--hard", sha1.c_str(),
-                              CM_NULLPTR };
+  char const* git_reset[] = { git, "reset", "--hard", sha1.c_str(), nullptr };
   OutputLogger reset_out(this->Log, "reset-out> ");
   OutputLogger reset_err(this->Log, "reset-err> ");
   return this->RunChild(&git_reset[0], &reset_out, &reset_err);
@@ -217,11 +214,11 @@ bool cmCTestGIT::UpdateByCustom(std::string const& custom)
   std::vector<std::string> git_custom_command;
   cmSystemTools::ExpandListArgument(custom, git_custom_command, true);
   std::vector<char const*> git_custom;
-  for (std::vector<std::string>::const_iterator i = git_custom_command.begin();
-       i != git_custom_command.end(); ++i) {
-    git_custom.push_back(i->c_str());
+  git_custom.reserve(git_custom_command.size() + 1);
+  for (std::string const& i : git_custom_command) {
+    git_custom.push_back(i.c_str());
   }
-  git_custom.push_back(CM_NULLPTR);
+  git_custom.push_back(nullptr);
 
   OutputLogger custom_out(this->Log, "custom-out> ");
   OutputLogger custom_err(this->Log, "custom-err> ");
@@ -250,7 +247,7 @@ bool cmCTestGIT::UpdateImpl()
 
   // Git < 1.6.5 did not support submodule --recursive
   if (this->GetGitVersion() < cmCTestGITVersion(1, 6, 5, 0)) {
-    recursive = CM_NULLPTR;
+    recursive = nullptr;
     // No need to require >= 1.6.5 if there are no submodules.
     if (cmSystemTools::FileExists((top_dir + "/.gitmodules").c_str())) {
       this->Log << "Git < 1.6.5 cannot update submodules recursively\n";
@@ -259,7 +256,7 @@ bool cmCTestGIT::UpdateImpl()
 
   // Git < 1.8.1 did not support sync --recursive
   if (this->GetGitVersion() < cmCTestGITVersion(1, 8, 1, 0)) {
-    sync_recursive = CM_NULLPTR;
+    sync_recursive = nullptr;
     // No need to require >= 1.8.1 if there are no submodules.
     if (cmSystemTools::FileExists((top_dir + "/.gitmodules").c_str())) {
       this->Log << "Git < 1.8.1 cannot synchronize submodules recursively\n";
@@ -274,8 +271,7 @@ bool cmCTestGIT::UpdateImpl()
   std::string init_submodules =
     this->CTest->GetCTestConfiguration("GITInitSubmodules");
   if (cmSystemTools::IsOn(init_submodules.c_str())) {
-    char const* git_submodule_init[] = { git, "submodule", "init",
-                                         CM_NULLPTR };
+    char const* git_submodule_init[] = { git, "submodule", "init", nullptr };
     ret = this->RunChild(git_submodule_init, &submodule_out, &submodule_err,
                          top_dir.c_str());
 
@@ -285,7 +281,7 @@ bool cmCTestGIT::UpdateImpl()
   }
 
   char const* git_submodule_sync[] = { git, "submodule", "sync",
-                                       sync_recursive, CM_NULLPTR };
+                                       sync_recursive, nullptr };
   ret = this->RunChild(git_submodule_sync, &submodule_out, &submodule_err,
                        top_dir.c_str());
 
@@ -294,7 +290,7 @@ bool cmCTestGIT::UpdateImpl()
   }
 
   char const* git_submodule[] = { git, "submodule", "update", recursive,
-                                  CM_NULLPTR };
+                                  nullptr };
   return this->RunChild(git_submodule, &submodule_out, &submodule_err,
                         top_dir.c_str());
 }
@@ -303,7 +299,7 @@ unsigned int cmCTestGIT::GetGitVersion()
 {
   if (!this->CurrentGitVersion) {
     const char* git = this->CommandLineTool.c_str();
-    char const* git_version[] = { git, "--version", CM_NULLPTR };
+    char const* git_version[] = { git, "--version", nullptr };
     std::string version;
     OneLineParser version_out(this, "version-out> ", version);
     OutputLogger version_err(this->Log, "version-err> ");
@@ -359,7 +355,7 @@ protected:
     this->Changes.clear();
   }
 
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->Line[0] == ':') {
       this->DiffField = DiffFieldChange;
@@ -513,11 +509,11 @@ private:
     const char* email_last = *c ? c++ : c;
     person.EMail.assign(email_first, email_last - email_first);
 
-    person.Time = strtoul(c, (char**)&c, 10);
-    person.TimeZone = strtol(c, (char**)&c, 10);
+    person.Time = strtoul(c, const_cast<char**>(&c), 10);
+    person.TimeZone = strtol(c, const_cast<char**>(&c), 10);
   }
 
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->Line.empty()) {
       if (this->Section == SectionBody && this->LineEnd == '\0') {
@@ -615,10 +611,10 @@ bool cmCTestGIT::LoadRevisions()
   std::string range = this->OldRevision + ".." + this->NewRevision;
   const char* git = this->CommandLineTool.c_str();
   const char* git_rev_list[] = { git,           "rev-list", "--reverse",
-                                 range.c_str(), "--",       CM_NULLPTR };
+                                 range.c_str(), "--",       nullptr };
   const char* git_diff_tree[] = {
     git,  "diff-tree",    "--stdin",          "--always", "-z",
-    "-r", "--pretty=raw", "--encoding=utf-8", CM_NULLPTR
+    "-r", "--pretty=raw", "--encoding=utf-8", nullptr
   };
   this->Log << this->ComputeCommandLine(git_rev_list) << " | "
             << this->ComputeCommandLine(git_diff_tree) << "\n";
@@ -645,23 +641,21 @@ bool cmCTestGIT::LoadModifications()
 
   // Use 'git update-index' to refresh the index w.r.t. the work tree.
   const char* git_update_index[] = { git, "update-index", "--refresh",
-                                     CM_NULLPTR };
+                                     nullptr };
   OutputLogger ui_out(this->Log, "ui-out> ");
   OutputLogger ui_err(this->Log, "ui-err> ");
-  this->RunChild(git_update_index, &ui_out, &ui_err, CM_NULLPTR,
+  this->RunChild(git_update_index, &ui_out, &ui_err, nullptr,
                  cmProcessOutput::UTF8);
 
   // Use 'git diff-index' to get modified files.
   const char* git_diff_index[] = { git,    "diff-index", "-z",
-                                   "HEAD", "--",         CM_NULLPTR };
+                                   "HEAD", "--",         nullptr };
   DiffParser out(this, "di-out> ");
   OutputLogger err(this->Log, "di-err> ");
-  this->RunChild(git_diff_index, &out, &err, CM_NULLPTR,
-                 cmProcessOutput::UTF8);
+  this->RunChild(git_diff_index, &out, &err, nullptr, cmProcessOutput::UTF8);
 
-  for (std::vector<Change>::const_iterator ci = out.Changes.begin();
-       ci != out.Changes.end(); ++ci) {
-    this->DoModification(PathModified, ci->Path);
+  for (Change const& c : out.Changes) {
+    this->DoModification(PathModified, c.Path);
   }
   return true;
 }
diff --git a/Source/CTest/cmCTestGIT.h b/Source/CTest/cmCTestGIT.h
index 4bf8294e6..ade430fae 100644
--- a/Source/CTest/cmCTestGIT.h
+++ b/Source/CTest/cmCTestGIT.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestGIT_h
 #define cmCTestGIT_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestGlobalVC.h"
 
@@ -22,15 +22,15 @@ public:
   /** Construct with a CTest instance and update log stream.  */
   cmCTestGIT(cmCTest* ctest, std::ostream& log);
 
-  ~cmCTestGIT() CM_OVERRIDE;
+  ~cmCTestGIT() override;
 
 private:
   unsigned int CurrentGitVersion;
   unsigned int GetGitVersion();
   std::string GetWorkingRevision();
-  bool NoteOldRevision() CM_OVERRIDE;
-  bool NoteNewRevision() CM_OVERRIDE;
-  bool UpdateImpl() CM_OVERRIDE;
+  bool NoteOldRevision() override;
+  bool NoteNewRevision() override;
+  bool UpdateImpl() override;
 
   std::string FindGitDir();
   std::string FindTopDir();
@@ -39,8 +39,8 @@ private:
   bool UpdateByCustom(std::string const& custom);
   bool UpdateInternal();
 
-  bool LoadRevisions() CM_OVERRIDE;
-  bool LoadModifications() CM_OVERRIDE;
+  bool LoadRevisions() override;
+  bool LoadModifications() override;
 
   // "public" needed by older Sun compilers
 public:
diff --git a/Source/CTest/cmCTestGenericHandler.cxx b/Source/CTest/cmCTestGenericHandler.cxx
index 19034c01b..ce8f70998 100644
--- a/Source/CTest/cmCTestGenericHandler.cxx
+++ b/Source/CTest/cmCTestGenericHandler.cxx
@@ -2,7 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCTestGenericHandler.h"
 
-#include "cmConfigure.h"
 #include <sstream>
 #include <utility>
 
@@ -12,7 +11,7 @@
 cmCTestGenericHandler::cmCTestGenericHandler()
 {
   this->HandlerVerbose = cmSystemTools::OUTPUT_NONE;
-  this->CTest = CM_NULLPTR;
+  this->CTest = nullptr;
   this->SubmitIndex = 0;
   this->AppendXML = false;
   this->Quiet = false;
@@ -58,10 +57,8 @@ void cmCTestGenericHandler::Initialize()
   this->AppendXML = false;
   this->TestLoad = 0;
   this->Options.clear();
-  t_StringToString::iterator it;
-  for (it = this->PersistentOptions.begin();
-       it != this->PersistentOptions.end(); ++it) {
-    this->Options[it->first] = it->second;
+  for (auto const& po : this->PersistentOptions) {
+    this->Options[po.first] = po.second;
   }
 }
 
@@ -70,7 +67,7 @@ const char* cmCTestGenericHandler::GetOption(const std::string& op)
   cmCTestGenericHandler::t_StringToString::iterator remit =
     this->Options.find(op);
   if (remit == this->Options.end()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return remit->second.c_str();
 }
diff --git a/Source/CTest/cmCTestGlobalVC.cxx b/Source/CTest/cmCTestGlobalVC.cxx
index 25294b5ae..d2714d90b 100644
--- a/Source/CTest/cmCTestGlobalVC.cxx
+++ b/Source/CTest/cmCTestGlobalVC.cxx
@@ -48,15 +48,14 @@ void cmCTestGlobalVC::DoRevision(Revision const& revision,
   /* clang-format on */
 
   // Update information about revisions of the changed files.
-  for (std::vector<Change>::const_iterator ci = changes.begin();
-       ci != changes.end(); ++ci) {
-    if (const char* local = this->LocalPath(ci->Path)) {
+  for (Change const& c : changes) {
+    if (const char* local = this->LocalPath(c.Path)) {
       std::string dir = cmSystemTools::GetFilenamePath(local);
       std::string name = cmSystemTools::GetFilenameName(local);
       File& file = this->Dirs[dir][name];
       file.PriorRev = file.Rev ? file.Rev : &this->PriorRev;
       file.Rev = &rev;
-      this->Log << "  " << ci->Action << " " << local << " "
+      this->Log << "  " << c.Action << " " << local << " "
                 << "\n";
     }
   }
@@ -83,9 +82,9 @@ void cmCTestGlobalVC::WriteXMLDirectory(cmXMLWriter& xml,
   const char* slash = path.empty() ? "" : "/";
   xml.StartElement("Directory");
   xml.Element("Name", path);
-  for (Directory::const_iterator fi = dir.begin(); fi != dir.end(); ++fi) {
-    std::string full = path + slash + fi->first;
-    this->WriteXMLEntry(xml, path, fi->first, full, fi->second);
+  for (auto const& f : dir) {
+    std::string const full = path + slash + f.first;
+    this->WriteXMLEntry(xml, path, f.first, full, f.second);
   }
   xml.EndElement(); // Directory
 }
@@ -114,10 +113,8 @@ bool cmCTestGlobalVC::WriteXMLUpdates(cmXMLWriter& xml)
 
   this->WriteXMLGlobal(xml);
 
-  for (std::map<std::string, Directory>::const_iterator di =
-         this->Dirs.begin();
-       di != this->Dirs.end(); ++di) {
-    this->WriteXMLDirectory(xml, di->first, di->second);
+  for (auto const& d : this->Dirs) {
+    this->WriteXMLDirectory(xml, d.first, d.second);
   }
 
   return result;
diff --git a/Source/CTest/cmCTestGlobalVC.h b/Source/CTest/cmCTestGlobalVC.h
index a5273d3dd..76377ed17 100644
--- a/Source/CTest/cmCTestGlobalVC.h
+++ b/Source/CTest/cmCTestGlobalVC.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestGlobalVC_h
 #define cmCTestGlobalVC_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestVC.h"
 
@@ -26,11 +26,11 @@ public:
   /** Construct with a CTest instance and update log stream.  */
   cmCTestGlobalVC(cmCTest* ctest, std::ostream& log);
 
-  ~cmCTestGlobalVC() CM_OVERRIDE;
+  ~cmCTestGlobalVC() override;
 
 protected:
   // Implement cmCTestVC internal API.
-  bool WriteXMLUpdates(cmXMLWriter& xml) CM_OVERRIDE;
+  bool WriteXMLUpdates(cmXMLWriter& xml) override;
 
   /** Represent a vcs-reported action for one path in a revision.  */
   struct Change
diff --git a/Source/CTest/cmCTestHG.cxx b/Source/CTest/cmCTestHG.cxx
index 49f9a6500..525dacc1d 100644
--- a/Source/CTest/cmCTestHG.cxx
+++ b/Source/CTest/cmCTestHG.cxx
@@ -36,7 +36,7 @@ private:
   std::string& Rev;
   cmsys::RegularExpression RegexIdentify;
 
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->RegexIdentify.find(this->Line)) {
       this->Rev = this->RegexIdentify.match(1);
@@ -60,7 +60,7 @@ private:
   cmCTestHG* HG;
   cmsys::RegularExpression RegexStatus;
 
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->RegexStatus.find(this->Line)) {
       this->DoPath(this->RegexStatus.match(1)[0], this->RegexStatus.match(2));
@@ -96,7 +96,7 @@ std::string cmCTestHG::GetWorkingRevision()
 {
   // Run plumbing "hg identify" to get work tree revision.
   const char* hg = this->CommandLineTool.c_str();
-  const char* hg_identify[] = { hg, "identify", "-i", CM_NULLPTR };
+  const char* hg_identify[] = { hg, "identify", "-i", nullptr };
   std::string rev;
   IdentifyParser out(this, "rev-out> ", rev);
   OutputLogger err(this->Log, "rev-err> ");
@@ -126,7 +126,7 @@ bool cmCTestHG::UpdateImpl()
   // Use "hg pull" followed by "hg update" to update the working tree.
   {
     const char* hg = this->CommandLineTool.c_str();
-    const char* hg_pull[] = { hg, "pull", "-v", CM_NULLPTR };
+    const char* hg_pull[] = { hg, "pull", "-v", nullptr };
     OutputLogger out(this->Log, "pull-out> ");
     OutputLogger err(this->Log, "pull-err> ");
     this->RunChild(&hg_pull[0], &out, &err);
@@ -145,13 +145,12 @@ bool cmCTestHG::UpdateImpl()
     opts = this->CTest->GetCTestConfiguration("HGUpdateOptions");
   }
   std::vector<std::string> args = cmSystemTools::ParseArguments(opts.c_str());
-  for (std::vector<std::string>::const_iterator ai = args.begin();
-       ai != args.end(); ++ai) {
-    hg_update.push_back(ai->c_str());
+  for (std::string const& arg : args) {
+    hg_update.push_back(arg.c_str());
   }
 
   // Sentinel argument.
-  hg_update.push_back(CM_NULLPTR);
+  hg_update.push_back(nullptr);
 
   OutputLogger out(this->Log, "update-out> ");
   OutputLogger err(this->Log, "update-err> ");
@@ -168,7 +167,7 @@ public:
   {
     this->InitializeParser();
   }
-  ~LogParser() CM_OVERRIDE { this->CleanupParser(); }
+  ~LogParser() override { this->CleanupParser(); }
 private:
   cmCTestHG* HG;
 
@@ -179,14 +178,14 @@ private:
   Change CurChange;
   std::vector<char> CData;
 
-  bool ProcessChunk(const char* data, int length) CM_OVERRIDE
+  bool ProcessChunk(const char* data, int length) override
   {
     this->OutputLogger::ProcessChunk(data, length);
     this->ParseChunk(data, length);
     return true;
   }
 
-  void StartElement(const std::string& name, const char** atts) CM_OVERRIDE
+  void StartElement(const std::string& name, const char** atts) override
   {
     this->CData.clear();
     if (name == "logentry") {
@@ -198,12 +197,12 @@ private:
     }
   }
 
-  void CharacterDataHandler(const char* data, int length) CM_OVERRIDE
+  void CharacterDataHandler(const char* data, int length) override
   {
     this->CData.insert(this->CData.end(), data, data + length);
   }
 
-  void EndElement(const std::string& name) CM_OVERRIDE
+  void EndElement(const std::string& name) override
   {
     if (name == "logentry") {
       this->HG->DoRevision(this->Rev, this->Changes);
@@ -217,25 +216,25 @@ private:
       this->Rev.Log.assign(&this->CData[0], this->CData.size());
     } else if (!this->CData.empty() && name == "files") {
       std::vector<std::string> paths = this->SplitCData();
-      for (unsigned int i = 0; i < paths.size(); ++i) {
+      for (std::string const& path : paths) {
         // Updated by default, will be modified using file_adds and
         // file_dels.
         this->CurChange = Change('U');
-        this->CurChange.Path = paths[i];
+        this->CurChange.Path = path;
         this->Changes.push_back(this->CurChange);
       }
     } else if (!this->CData.empty() && name == "file_adds") {
       std::string added_paths(this->CData.begin(), this->CData.end());
-      for (unsigned int i = 0; i < this->Changes.size(); ++i) {
-        if (added_paths.find(this->Changes[i].Path) != std::string::npos) {
-          this->Changes[i].Action = 'A';
+      for (Change& change : this->Changes) {
+        if (added_paths.find(change.Path) != std::string::npos) {
+          change.Action = 'A';
         }
       }
     } else if (!this->CData.empty() && name == "file_dels") {
       std::string added_paths(this->CData.begin(), this->CData.end());
-      for (unsigned int i = 0; i < this->Changes.size(); ++i) {
-        if (added_paths.find(this->Changes[i].Path) != std::string::npos) {
-          this->Changes[i].Action = 'D';
+      for (Change& change : this->Changes) {
+        if (added_paths.find(change.Path) != std::string::npos) {
+          change.Action = 'D';
         }
       }
     }
@@ -246,19 +245,19 @@ private:
   {
     std::vector<std::string> output;
     std::string currPath;
-    for (unsigned int i = 0; i < this->CData.size(); ++i) {
-      if (this->CData[i] != ' ') {
-        currPath += this->CData[i];
+    for (char i : this->CData) {
+      if (i != ' ') {
+        currPath += i;
       } else {
         output.push_back(currPath);
-        currPath = "";
+        currPath.clear();
       }
     }
     output.push_back(currPath);
     return output;
   }
 
-  void ReportError(int /*line*/, int /*column*/, const char* msg) CM_OVERRIDE
+  void ReportError(int /*line*/, int /*column*/, const char* msg) override
   {
     this->HG->Log << "Error parsing hg log xml: " << msg << "\n";
   }
@@ -286,7 +285,7 @@ bool cmCTestHG::LoadRevisions()
                               "</logentry>\n";
   const char* hg_log[] = {
     hg,           "log",         "--removed", "-r", range.c_str(),
-    "--template", hgXMLTemplate, CM_NULLPTR
+    "--template", hgXMLTemplate, nullptr
   };
 
   LogParser out(this, "log-out> ");
@@ -302,7 +301,7 @@ bool cmCTestHG::LoadModifications()
 {
   // Use 'hg status' to get modified files.
   const char* hg = this->CommandLineTool.c_str();
-  const char* hg_status[] = { hg, "status", CM_NULLPTR };
+  const char* hg_status[] = { hg, "status", nullptr };
   StatusParser out(this, "status-out> ");
   OutputLogger err(this->Log, "status-err> ");
   this->RunChild(hg_status, &out, &err);
diff --git a/Source/CTest/cmCTestHG.h b/Source/CTest/cmCTestHG.h
index ec9eaffe8..c12d61887 100644
--- a/Source/CTest/cmCTestHG.h
+++ b/Source/CTest/cmCTestHG.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestHG_h
 #define cmCTestHG_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestGlobalVC.h"
 
@@ -22,16 +22,16 @@ public:
   /** Construct with a CTest instance and update log stream.  */
   cmCTestHG(cmCTest* ctest, std::ostream& log);
 
-  ~cmCTestHG() CM_OVERRIDE;
+  ~cmCTestHG() override;
 
 private:
   std::string GetWorkingRevision();
-  bool NoteOldRevision() CM_OVERRIDE;
-  bool NoteNewRevision() CM_OVERRIDE;
-  bool UpdateImpl() CM_OVERRIDE;
+  bool NoteOldRevision() override;
+  bool NoteNewRevision() override;
+  bool UpdateImpl() override;
 
-  bool LoadRevisions() CM_OVERRIDE;
-  bool LoadModifications() CM_OVERRIDE;
+  bool LoadRevisions() override;
+  bool LoadModifications() override;
 
   // Parsing helper classes.
   class IdentifyParser;
diff --git a/Source/CTest/cmCTestHandlerCommand.cxx b/Source/CTest/cmCTestHandlerCommand.cxx
index c99e450d0..5a7baf545 100644
--- a/Source/CTest/cmCTestHandlerCommand.cxx
+++ b/Source/CTest/cmCTestHandlerCommand.cxx
@@ -20,7 +20,7 @@ cmCTestHandlerCommand::cmCTestHandlerCommand()
   size_t cc;
   this->Arguments.reserve(INIT_SIZE);
   for (cc = 0; cc < INIT_SIZE; ++cc) {
-    this->Arguments.push_back(CM_NULLPTR);
+    this->Arguments.push_back(nullptr);
   }
   this->Arguments[ct_RETURN_VALUE] = "RETURN_VALUE";
   this->Arguments[ct_CAPTURE_CMAKE_ERROR] = "CAPTURE_CMAKE_ERROR";
@@ -89,7 +89,7 @@ bool cmCTestHandlerCommand::InitialPass(std::vector<std::string> const& args,
   SaveRestoreErrorState errorState;
   // Allocate space for argument values.
   this->Values.clear();
-  this->Values.resize(this->Last, CM_NULLPTR);
+  this->Values.resize(this->Last, nullptr);
 
   // Process input arguments.
   this->ArgumentDoing = ArgumentDoingNone;
@@ -97,12 +97,11 @@ bool cmCTestHandlerCommand::InitialPass(std::vector<std::string> const& args,
   // bad one so that CAPTURE_CMAKE_ERROR can override setting the
   // global error state
   bool foundBadArgument = false;
-  for (unsigned int i = 0; i < args.size(); ++i) {
+  for (std::string const& arg : args) {
     // Check this argument.
-    if (!this->CheckArgumentKeyword(args[i]) &&
-        !this->CheckArgumentValue(args[i])) {
+    if (!this->CheckArgumentKeyword(arg) && !this->CheckArgumentValue(arg)) {
       std::ostringstream e;
-      e << "called with unknown argument \"" << args[i] << "\".";
+      e << "called with unknown argument \"" << arg << "\".";
       this->SetError(e.str());
       foundBadArgument = true;
     }
diff --git a/Source/CTest/cmCTestHandlerCommand.h b/Source/CTest/cmCTestHandlerCommand.h
index 0ea061225..79d61f3c7 100644
--- a/Source/CTest/cmCTestHandlerCommand.h
+++ b/Source/CTest/cmCTestHandlerCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestHandlerCommand_h
 #define cmCTestHandlerCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestCommand.h"
 
@@ -34,7 +34,7 @@ public:
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   enum
   {
diff --git a/Source/CTest/cmCTestLaunch.cxx b/Source/CTest/cmCTestLaunch.cxx
index 5b213518a..a1249f5b3 100644
--- a/Source/CTest/cmCTestLaunch.cxx
+++ b/Source/CTest/cmCTestLaunch.cxx
@@ -2,12 +2,11 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCTestLaunch.h"
 
-#include "cmConfigure.h"
-
 #include "cmsys/FStream.hxx"
 #include "cmsys/Process.h"
 #include "cmsys/RegularExpression.hxx"
 #include <iostream>
+#include <memory> // IWYU pragma: keep
 #include <stdlib.h>
 #include <string.h>
 
@@ -19,7 +18,6 @@
 #include "cmStateSnapshot.h"
 #include "cmSystemTools.h"
 #include "cmXMLWriter.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 #ifdef _WIN32
@@ -31,7 +29,7 @@
 cmCTestLaunch::cmCTestLaunch(int argc, const char* const* argv)
 {
   this->Passthru = true;
-  this->Process = CM_NULLPTR;
+  this->Process = nullptr;
   this->ExitCode = 1;
   this->CWD = cmSystemTools::GetCurrentWorkingDirectory();
 
@@ -129,7 +127,7 @@ bool cmCTestLaunch::ParseArguments(int argc, const char* const* argv)
     return true;
   }
   this->RealArgC = 0;
-  this->RealArgV = CM_NULLPTR;
+  this->RealArgV = nullptr;
   std::cerr << "No launch/command separator ('--') found!\n";
   return false;
 }
@@ -171,9 +169,8 @@ void cmCTestLaunch::ComputeFileNames()
   cmCryptoHash md5(cmCryptoHash::AlgoMD5);
   md5.Initialize();
   md5.Append(this->CWD);
-  for (std::vector<std::string>::const_iterator ai = this->RealArgs.begin();
-       ai != this->RealArgs.end(); ++ai) {
-    md5.Append(*ai);
+  for (std::string const& realArg : this->RealArgs) {
+    md5.Append(realArg);
   }
   this->LogHash = md5.FinalizeHex();
 
@@ -224,11 +221,11 @@ void cmCTestLaunch::RunChild()
 
   // Record child stdout and stderr if necessary.
   if (!this->Passthru) {
-    char* data = CM_NULLPTR;
+    char* data = nullptr;
     int length = 0;
     cmProcessOutput processOutput;
     std::string strdata;
-    while (int p = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR)) {
+    while (int p = cmsysProcess_WaitForData(cp, &data, &length, nullptr)) {
       if (p == cmsysProcess_Pipe_STDOUT) {
         processOutput.DecodeText(data, length, strdata, 1);
         fout.write(strdata.c_str(), strdata.size());
@@ -254,7 +251,7 @@ void cmCTestLaunch::RunChild()
   }
 
   // Wait for the real command to finish.
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
   this->ExitCode = cmsysProcess_GetExitValue(cp);
 }
 
@@ -396,7 +393,7 @@ void cmCTestLaunch::WriteXMLAction(cmXMLWriter& xml)
   }
 
   // OutputType
-  const char* outputType = CM_NULLPTR;
+  const char* outputType = nullptr;
   if (!this->OptionTargetType.empty()) {
     if (this->OptionTargetType == "EXECUTABLE") {
       outputType = "executable";
@@ -424,9 +421,8 @@ void cmCTestLaunch::WriteXMLCommand(cmXMLWriter& xml)
   if (!this->CWD.empty()) {
     xml.Element("WorkingDirectory", this->CWD);
   }
-  for (std::vector<std::string>::const_iterator ai = this->RealArgs.begin();
-       ai != this->RealArgs.end(); ++ai) {
-    xml.Element("Argument", *ai);
+  for (std::string const& realArg : this->RealArgs) {
+    xml.Element("Argument", realArg);
   }
   xml.EndElement(); // Command
 }
@@ -489,9 +485,8 @@ void cmCTestLaunch::WriteXMLLabels(cmXMLWriter& xml)
   if (!this->Labels.empty()) {
     xml.Comment("Interested parties");
     xml.StartElement("Labels");
-    for (std::set<std::string>::const_iterator li = this->Labels.begin();
-         li != this->Labels.end(); ++li) {
-      xml.Element("Label", *li);
+    for (std::string const& label : this->Labels) {
+      xml.Element("Label", label);
     }
     xml.EndElement(); // Labels
   }
@@ -508,7 +503,11 @@ void cmCTestLaunch::DumpFileToXML(cmXMLWriter& xml, std::string const& fname)
     if (MatchesFilterPrefix(line)) {
       continue;
     }
-
+    if (this->Match(line, this->RegexWarningSuppress)) {
+      line = "[CTest: warning suppressed] " + line;
+    } else if (this->Match(line, this->RegexWarning)) {
+      line = "[CTest: warning matched] " + line;
+    }
     xml.Content(sep);
     xml.Content(line);
     sep = "\n";
@@ -595,9 +594,8 @@ bool cmCTestLaunch::ScrapeLog(std::string const& fname)
 bool cmCTestLaunch::Match(std::string const& line,
                           std::vector<cmsys::RegularExpression>& regexps)
 {
-  for (std::vector<cmsys::RegularExpression>::iterator ri = regexps.begin();
-       ri != regexps.end(); ++ri) {
-    if (ri->find(line.c_str())) {
+  for (cmsys::RegularExpression& r : regexps) {
+    if (r.find(line.c_str())) {
       return true;
     }
   }
@@ -628,12 +626,12 @@ void cmCTestLaunch::LoadConfig()
   cm.SetHomeOutputDirectory("");
   cm.GetCurrentSnapshot().SetDefaultDefinitions();
   cmGlobalGenerator gg(&cm);
-  CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(&gg, cm.GetCurrentSnapshot()));
+  cmMakefile mf(&gg, cm.GetCurrentSnapshot());
   std::string fname = this->LogDir;
   fname += "CTestLaunchConfig.cmake";
   if (cmSystemTools::FileExists(fname.c_str()) &&
-      mf->ReadListFile(fname.c_str())) {
-    this->SourceDir = mf->GetSafeDefinition("CTEST_SOURCE_DIRECTORY");
+      mf.ReadListFile(fname.c_str())) {
+    this->SourceDir = mf.GetSafeDefinition("CTEST_SOURCE_DIRECTORY");
     cmSystemTools::ConvertToUnixSlashes(this->SourceDir);
   }
 }
diff --git a/Source/CTest/cmCTestMemCheckCommand.cxx b/Source/CTest/cmCTestMemCheckCommand.cxx
index b9cae3bfe..a5d599583 100644
--- a/Source/CTest/cmCTestMemCheckCommand.cxx
+++ b/Source/CTest/cmCTestMemCheckCommand.cxx
@@ -14,7 +14,7 @@
 cmCTestMemCheckCommand::cmCTestMemCheckCommand()
 {
   this->Arguments[ctm_DEFECT_COUNT] = "DEFECT_COUNT";
-  this->Arguments[ctm_LAST] = CM_NULLPTR;
+  this->Arguments[ctm_LAST] = nullptr;
   this->Last = ctm_LAST;
 }
 
diff --git a/Source/CTest/cmCTestMemCheckCommand.h b/Source/CTest/cmCTestMemCheckCommand.h
index fa595594a..b6b3c4028 100644
--- a/Source/CTest/cmCTestMemCheckCommand.h
+++ b/Source/CTest/cmCTestMemCheckCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestMemCheckCommand_h
 #define cmCTestMemCheckCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestTestCommand.h"
 
@@ -23,7 +23,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestMemCheckCommand* ni = new cmCTestMemCheckCommand;
     ni->CTest = this->CTest;
@@ -32,9 +32,9 @@ public:
   }
 
 protected:
-  cmCTestGenericHandler* InitializeActualHandler() CM_OVERRIDE;
+  cmCTestGenericHandler* InitializeActualHandler() override;
 
-  void ProcessAdditionalValues(cmCTestGenericHandler* handler) CM_OVERRIDE;
+  void ProcessAdditionalValues(cmCTestGenericHandler* handler) override;
 
   enum
   {
diff --git a/Source/CTest/cmCTestMemCheckHandler.cxx b/Source/CTest/cmCTestMemCheckHandler.cxx
index c35f0bc70..3efb039ea 100644
--- a/Source/CTest/cmCTestMemCheckHandler.cxx
+++ b/Source/CTest/cmCTestMemCheckHandler.cxx
@@ -28,12 +28,12 @@ static CatToErrorType cmCTestMemCheckBoundsChecker[] = {
   { "Allocation Conflict", cmCTestMemCheckHandler::FMM },
   { "Bad Pointer Use", cmCTestMemCheckHandler::FMW },
   { "Dangling Pointer", cmCTestMemCheckHandler::FMR },
-  { CM_NULLPTR, 0 }
+  { nullptr, 0 }
 };
 
 static void xmlReportError(int line, const char* msg, void* data)
 {
-  cmCTest* ctest = (cmCTest*)data;
+  cmCTest* ctest = static_cast<cmCTest*>(data);
   cmCTestLog(ctest, ERROR_MESSAGE, "Error parsing XML in stream at line "
                << line << ": " << msg << std::endl);
 }
@@ -45,9 +45,9 @@ public:
   cmBoundsCheckerParser(cmCTest* c)
   {
     this->CTest = c;
-    this->SetErrorCallback(xmlReportError, (void*)c);
+    this->SetErrorCallback(xmlReportError, c);
   }
-  void StartElement(const std::string& name, const char** atts) CM_OVERRIDE
+  void StartElement(const std::string& name, const char** atts) override
   {
     if (name == "MemoryLeak" || name == "ResourceLeak") {
       this->Errors.push_back(cmCTestMemCheckHandler::MLK);
@@ -58,23 +58,23 @@ public:
     std::ostringstream ostr;
     ostr << name << ":\n";
     int i = 0;
-    for (; atts[i] != CM_NULLPTR; i += 2) {
+    for (; atts[i] != nullptr; i += 2) {
       ostr << "   " << atts[i] << " - " << atts[i + 1] << "\n";
     }
     ostr << "\n";
     this->Log += ostr.str();
   }
-  void EndElement(const std::string& /*name*/) CM_OVERRIDE {}
+  void EndElement(const std::string& /*name*/) override {}
 
   const char* GetAttribute(const char* name, const char** atts)
   {
     int i = 0;
-    for (; atts[i] != CM_NULLPTR; ++i) {
+    for (; atts[i] != nullptr; ++i) {
       if (strcmp(name, atts[i]) == 0) {
         return atts[i + 1];
       }
     }
-    return CM_NULLPTR;
+    return nullptr;
   }
   void ParseError(const char** atts)
   {
@@ -122,11 +122,11 @@ void cmCTestMemCheckHandler::Initialize()
   this->LogWithPID = false;
   this->CustomMaximumPassedTestOutputSize = 0;
   this->CustomMaximumFailedTestOutputSize = 0;
-  this->MemoryTester = "";
+  this->MemoryTester.clear();
   this->MemoryTesterDynamicOptions.clear();
   this->MemoryTesterOptions.clear();
   this->MemoryTesterStyle = UNKNOWN;
-  this->MemoryTesterOutputFile = "";
+  this->MemoryTesterOutputFile.clear();
   this->DefectCount = 0;
 }
 
@@ -157,15 +157,13 @@ int cmCTestMemCheckHandler::PostProcessHandler()
 void cmCTestMemCheckHandler::GenerateTestCommand(
   std::vector<std::string>& args, int test)
 {
-  std::vector<std::string>::size_type pp;
   std::string index;
   std::ostringstream stream;
   std::string memcheckcommand =
     cmSystemTools::ConvertToOutputPath(this->MemoryTester.c_str());
   stream << test;
   index = stream.str();
-  for (pp = 0; pp < this->MemoryTesterDynamicOptions.size(); pp++) {
-    std::string arg = this->MemoryTesterDynamicOptions[pp];
+  for (std::string arg : this->MemoryTesterDynamicOptions) {
     std::string::size_type pos = arg.find("??");
     if (pos != std::string::npos) {
       arg.replace(pos, 2, index);
@@ -180,18 +178,18 @@ void cmCTestMemCheckHandler::GenerateTestCommand(
   // via environment varaibles.
   std::string memTesterEnvironmentVariable =
     this->MemoryTesterEnvironmentVariable;
-  for (pp = 0; pp < this->MemoryTesterOptions.size(); pp++) {
+  for (std::string const& arg : this->MemoryTesterOptions) {
     if (!memTesterEnvironmentVariable.empty()) {
       // If we are using env to pass options, append all the options to
       // this string with space separation.
-      memTesterEnvironmentVariable += " " + this->MemoryTesterOptions[pp];
+      memTesterEnvironmentVariable += " " + arg;
     }
     // for regular options just add them to args and memcheckcommand
     // which is just used for display
     else {
-      args.push_back(this->MemoryTesterOptions[pp]);
+      args.push_back(arg);
       memcheckcommand += " \"";
-      memcheckcommand += this->MemoryTesterOptions[pp];
+      memcheckcommand += arg;
       memcheckcommand += "\"";
     }
   }
@@ -228,9 +226,9 @@ void cmCTestMemCheckHandler::InitializeResultsVectors()
   // define the standard set of errors
   //----------------------------------------------------------------------
   static const char* cmCTestMemCheckResultStrings[] = {
-    "ABR", "ABW", "ABWL", "COR", "EXU", "FFM", "FIM",     "FMM",
-    "FMR", "FMW", "FUM",  "IPR", "IPW", "MAF", "MLK",     "MPK",
-    "NPR", "ODS", "PAR",  "PLK", "UMC", "UMR", CM_NULLPTR
+    "ABR", "ABW", "ABWL", "COR", "EXU", "FFM", "FIM",  "FMM",
+    "FMR", "FMW", "FUM",  "IPR", "IPW", "MAF", "MLK",  "MPK",
+    "NPR", "ODS", "PAR",  "PLK", "UMC", "UMR", nullptr
   };
   static const char* cmCTestMemCheckResultLongStrings[] = {
     "Threading Problem",
@@ -255,10 +253,10 @@ void cmCTestMemCheckHandler::InitializeResultsVectors()
     "PLK",
     "Uninitialized Memory Conditional",
     "Uninitialized Memory Read",
-    CM_NULLPTR
+    nullptr
   };
   this->GlobalResults.clear();
-  for (int i = 0; cmCTestMemCheckResultStrings[i] != CM_NULLPTR; ++i) {
+  for (int i = 0; cmCTestMemCheckResultStrings[i] != nullptr; ++i) {
     this->ResultStrings.push_back(cmCTestMemCheckResultStrings[i]);
     this->ResultStringsLong.push_back(cmCTestMemCheckResultLongStrings[i]);
     this->GlobalResults.push_back(0);
@@ -291,6 +289,7 @@ void cmCTestMemCheckHandler::GenerateDartOutput(cmXMLWriter& xml)
     return;
   }
   this->CTest->StartXML(xml, this->AppendXML);
+  this->CTest->GenerateSubprojectsOutput(xml);
   xml.StartElement("DynamicAnalysis");
   switch (this->MemoryTesterStyle) {
     case cmCTestMemCheckHandler::VALGRIND:
@@ -325,9 +324,8 @@ void cmCTestMemCheckHandler::GenerateDartOutput(cmXMLWriter& xml)
   xml.Element("StartTestTime", this->StartTestTime);
   xml.StartElement("TestList");
   cmCTestMemCheckHandler::TestResultsVector::size_type cc;
-  for (cc = 0; cc < this->TestResults.size(); cc++) {
-    cmCTestTestResult* result = &this->TestResults[cc];
-    std::string testPath = result->Path + "/" + result->Name;
+  for (cmCTestTestResult const& result : this->TestResults) {
+    std::string testPath = result.Path + "/" + result.Name;
     xml.Element("Test", this->CTest->GetShortPathToFile(testPath.c_str()));
   }
   xml.EndElement(); // TestList
@@ -335,12 +333,12 @@ void cmCTestMemCheckHandler::GenerateDartOutput(cmXMLWriter& xml)
                      "-- Processing memory checking output:\n", this->Quiet);
   size_t total = this->TestResults.size();
   for (cc = 0; cc < this->TestResults.size(); cc++) {
-    cmCTestTestResult* result = &this->TestResults[cc];
+    cmCTestTestResult const& result = this->TestResults[cc];
     std::string memcheckstr;
     std::vector<int> memcheckresults(this->ResultStrings.size(), 0);
-    bool res = this->ProcessMemCheckOutput(result->Output, memcheckstr,
-                                           memcheckresults);
-    if (res && result->Status == cmCTestMemCheckHandler::COMPLETED) {
+    bool res =
+      this->ProcessMemCheckOutput(result.Output, memcheckstr, memcheckresults);
+    if (res && result.Status == cmCTestMemCheckHandler::COMPLETED) {
       continue;
     }
     this->CleanTestOutput(
@@ -363,11 +361,11 @@ void cmCTestMemCheckHandler::GenerateDartOutput(cmXMLWriter& xml)
     xml.EndElement(); // Results
     if (memoryErrors > 0) {
       const int maxTestNameWidth = this->CTest->GetMaxTestNameWidth();
-      std::string outname = result->Name + " ";
+      std::string outname = result.Name + " ";
       outname.resize(maxTestNameWidth + 4, '.');
       cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT, cc + 1
                            << "/" << total << " MemCheck: #"
-                           << result->TestCount << ": " << outname
+                           << result.TestCount << ": " << outname
                            << "   Defects: " << memoryErrors << std::endl,
                          this->Quiet);
     }
@@ -419,8 +417,8 @@ void cmCTestMemCheckHandler::GenerateDartOutput(cmXMLWriter& xml)
 
 bool cmCTestMemCheckHandler::InitializeMemoryChecking()
 {
-  this->MemoryTesterEnvironmentVariable = "";
-  this->MemoryTester = "";
+  this->MemoryTesterEnvironmentVariable.clear();
+  this->MemoryTester.clear();
   // Setup the command
   if (cmSystemTools::FileExists(
         this->CTest->GetCTestConfiguration("MemoryCheckCommand").c_str())) {
@@ -727,13 +725,12 @@ bool cmCTestMemCheckHandler::ProcessMemCheckSanitizerOutput(
   std::vector<std::string> lines;
   cmSystemTools::Split(str.c_str(), lines);
   std::ostringstream ostr;
-  log = "";
-  for (std::vector<std::string>::iterator i = lines.begin(); i != lines.end();
-       ++i) {
+  log.clear();
+  for (std::string const& l : lines) {
     std::string resultFound;
-    if (leakWarning.find(*i)) {
+    if (leakWarning.find(l)) {
       resultFound = leakWarning.match(1) + " leak";
-    } else if (sanitizerWarning.find(*i)) {
+    } else if (sanitizerWarning.find(l)) {
       resultFound = sanitizerWarning.match(1);
     }
     if (!resultFound.empty()) {
@@ -746,7 +743,7 @@ bool cmCTestMemCheckHandler::ProcessMemCheckSanitizerOutput(
       defects++;
       ostr << "<b>" << this->ResultStrings[idx] << "</b> ";
     }
-    ostr << *i << std::endl;
+    ostr << l << std::endl;
   }
   log = ostr.str();
   this->DefectCount += defects;
@@ -758,16 +755,15 @@ bool cmCTestMemCheckHandler::ProcessMemCheckPurifyOutput(
   std::vector<std::string> lines;
   cmSystemTools::Split(str.c_str(), lines);
   std::ostringstream ostr;
-  log = "";
+  log.clear();
 
   cmsys::RegularExpression pfW("^\\[[WEI]\\] ([A-Z][A-Z][A-Z][A-Z]*): ");
 
   int defects = 0;
 
-  for (std::vector<std::string>::iterator i = lines.begin(); i != lines.end();
-       ++i) {
+  for (std::string const& l : lines) {
     std::vector<int>::size_type failure = this->ResultStrings.size();
-    if (pfW.find(*i)) {
+    if (pfW.find(l)) {
       std::vector<int>::size_type cc;
       for (cc = 0; cc < this->ResultStrings.size(); cc++) {
         if (pfW.match(1) == this->ResultStrings[cc]) {
@@ -787,7 +783,7 @@ bool cmCTestMemCheckHandler::ProcessMemCheckPurifyOutput(
       results[failure]++;
       defects++;
     }
-    ostr << *i << std::endl;
+    ostr << l << std::endl;
   }
 
   log = ostr.str();
@@ -809,7 +805,7 @@ bool cmCTestMemCheckHandler::ProcessMemCheckValgrindOutput(
   std::string::size_type cc;
 
   std::ostringstream ostr;
-  log = "";
+  log.clear();
 
   int defects = 0;
 
@@ -907,11 +903,9 @@ bool cmCTestMemCheckHandler::ProcessMemCheckValgrindOutput(
   // Now put all all the non valgrind output into the test output
   // This should be last in case it gets truncated by the output
   // limiting code
-  for (std::vector<std::string::size_type>::iterator i =
-         nonValGrindOutput.begin();
-       i != nonValGrindOutput.end(); ++i) {
-    totalOutputSize += lines[*i].size();
-    ostr << lines[*i] << std::endl;
+  for (std::string::size_type i : nonValGrindOutput) {
+    totalOutputSize += lines[i].size();
+    ostr << lines[i] << std::endl;
     if (!unlimitedOutput &&
         totalOutputSize >
           static_cast<size_t>(this->CustomMaximumFailedTestOutputSize)) {
@@ -934,7 +928,7 @@ bool cmCTestMemCheckHandler::ProcessMemCheckValgrindOutput(
 bool cmCTestMemCheckHandler::ProcessMemCheckBoundsCheckerOutput(
   const std::string& str, std::string& log, std::vector<int>& results)
 {
-  log = "";
+  log.clear();
   double sttime = cmSystemTools::GetTime();
   std::vector<std::string> lines;
   cmSystemTools::Split(str.c_str(), lines);
@@ -962,8 +956,8 @@ bool cmCTestMemCheckHandler::ProcessMemCheckBoundsCheckerOutput(
     }
   }
   int defects = 0;
-  for (cc = 0; cc < parser.Errors.size(); ++cc) {
-    results[parser.Errors[cc]]++;
+  for (int err : parser.Errors) {
+    results[err]++;
     defects++;
   }
   cmCTestOptionalLog(this->CTest, DEBUG, "End test (elapsed: "
@@ -990,9 +984,8 @@ void cmCTestMemCheckHandler::PostProcessTest(cmCTestTestResult& res, int test)
   } else {
     std::vector<std::string> files;
     this->TestOutputFileNames(test, files);
-    for (std::vector<std::string>::iterator i = files.begin();
-         i != files.end(); ++i) {
-      this->AppendMemTesterOutput(res, *i);
+    for (std::string const& f : files) {
+      this->AppendMemTesterOutput(res, f);
     }
   }
 }
@@ -1086,7 +1079,7 @@ void cmCTestMemCheckHandler::TestOutputFileNames(
     if (g.GetFiles().empty()) {
       std::string log = "Cannot find memory tester output file: " + ofile;
       cmCTestLog(this->CTest, ERROR_MESSAGE, log << std::endl);
-      ofile = "";
+      ofile.clear();
     } else {
       files = g.GetFiles();
       return;
@@ -1094,7 +1087,7 @@ void cmCTestMemCheckHandler::TestOutputFileNames(
   } else if (!cmSystemTools::FileExists(ofile.c_str())) {
     std::string log = "Cannot find memory tester output file: " + ofile;
     cmCTestLog(this->CTest, ERROR_MESSAGE, log << std::endl);
-    ofile = "";
+    ofile.clear();
   }
   files.push_back(ofile);
 }
diff --git a/Source/CTest/cmCTestMemCheckHandler.h b/Source/CTest/cmCTestMemCheckHandler.h
index 333c2e2dd..921829429 100644
--- a/Source/CTest/cmCTestMemCheckHandler.h
+++ b/Source/CTest/cmCTestMemCheckHandler.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestMemCheckHandler_h
 #define cmCTestMemCheckHandler_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestTestHandler.h"
 
@@ -24,19 +24,18 @@ class cmCTestMemCheckHandler : public cmCTestTestHandler
 public:
   typedef cmCTestTestHandler Superclass;
 
-  void PopulateCustomVectors(cmMakefile* mf) CM_OVERRIDE;
+  void PopulateCustomVectors(cmMakefile* mf) override;
 
   cmCTestMemCheckHandler();
 
-  void Initialize() CM_OVERRIDE;
+  void Initialize() override;
 
   int GetDefectCount();
 
 protected:
-  int PreProcessHandler() CM_OVERRIDE;
-  int PostProcessHandler() CM_OVERRIDE;
-  void GenerateTestCommand(std::vector<std::string>& args,
-                           int test) CM_OVERRIDE;
+  int PreProcessHandler() override;
+  int PostProcessHandler() override;
+  void GenerateTestCommand(std::vector<std::string>& args, int test) override;
 
 private:
   enum
@@ -121,7 +120,7 @@ private:
   /**
    * Generate the Dart compatible output
    */
-  void GenerateDartOutput(cmXMLWriter& xml) CM_OVERRIDE;
+  void GenerateDartOutput(cmXMLWriter& xml) override;
 
   std::vector<std::string> CustomPreMemCheck;
   std::vector<std::string> CustomPostMemCheck;
diff --git a/Source/CTest/cmCTestMultiProcessHandler.cxx b/Source/CTest/cmCTestMultiProcessHandler.cxx
index 2c16a0d1e..6a7bdc03e 100644
--- a/Source/CTest/cmCTestMultiProcessHandler.cxx
+++ b/Source/CTest/cmCTestMultiProcessHandler.cxx
@@ -64,10 +64,9 @@ void cmCTestMultiProcessHandler::SetTests(TestMap& tests,
   this->Properties = properties;
   this->Total = this->Tests.size();
   // set test run map to false for all
-  for (TestMap::iterator i = this->Tests.begin(); i != this->Tests.end();
-       ++i) {
-    this->TestRunningMap[i->first] = false;
-    this->TestFinishMap[i->first] = false;
+  for (auto const& t : this->Tests) {
+    this->TestRunningMap[t.first] = false;
+    this->TestFinishMap[t.first] = false;
   }
   if (!this->CTest->GetShowOnly()) {
     this->ReadCostData();
@@ -131,11 +130,10 @@ void cmCTestMultiProcessHandler::StartTestProcess(int test)
 
   // Find any failed dependencies for this test. We assume the more common
   // scenario has no failed tests, so make it the outer loop.
-  for (std::vector<std::string>::const_iterator it = this->Failed->begin();
-       it != this->Failed->end(); ++it) {
-    if (this->Properties[test]->RequireSuccessDepends.find(*it) !=
+  for (std::string const& f : *this->Failed) {
+    if (this->Properties[test]->RequireSuccessDepends.find(f) !=
         this->Properties[test]->RequireSuccessDepends.end()) {
-      testRun->AddFailedDependency(*it);
+      testRun->AddFailedDependency(f);
     }
   }
 
@@ -152,9 +150,8 @@ void cmCTestMultiProcessHandler::StartTestProcess(int test)
     return;
   } else {
 
-    for (TestMap::iterator j = this->Tests.begin(); j != this->Tests.end();
-         ++j) {
-      j->second.erase(test);
+    for (auto& j : this->Tests) {
+      j.second.erase(test);
     }
 
     this->UnlockResources(test);
@@ -183,10 +180,8 @@ void cmCTestMultiProcessHandler::LockResources(int index)
 
 void cmCTestMultiProcessHandler::UnlockResources(int index)
 {
-  for (std::set<std::string>::iterator i =
-         this->Properties[index]->LockedResources.begin();
-       i != this->Properties[index]->LockedResources.end(); ++i) {
-    this->LockedResources.erase(*i);
+  for (std::string const& i : this->Properties[index]->LockedResources) {
+    this->LockedResources.erase(i);
   }
   if (this->Properties[index]->RunSerial) {
     this->SerialTestRunning = false;
@@ -219,10 +214,8 @@ std::string cmCTestMultiProcessHandler::GetName(int test)
 bool cmCTestMultiProcessHandler::StartTest(int test)
 {
   // Check for locked resources
-  for (std::set<std::string>::iterator i =
-         this->Properties[test]->LockedResources.begin();
-       i != this->Properties[test]->LockedResources.end(); ++i) {
-    if (this->LockedResources.find(*i) != this->LockedResources.end()) {
+  for (std::string const& i : this->Properties[test]->LockedResources) {
+    if (this->LockedResources.find(i) != this->LockedResources.end()) {
       return false;
     }
   }
@@ -292,22 +285,22 @@ void cmCTestMultiProcessHandler::StartNextTests()
   }
 
   TestList copy = this->SortedTests;
-  for (TestList::iterator test = copy.begin(); test != copy.end(); ++test) {
+  for (auto const& test : copy) {
     // Take a nap if we're currently performing a RUN_SERIAL test.
     if (this->SerialTestRunning) {
       break;
     }
     // We can only start a RUN_SERIAL test if no other tests are also running.
-    if (this->Properties[*test]->RunSerial && this->RunningCount > 0) {
+    if (this->Properties[test]->RunSerial && this->RunningCount > 0) {
       continue;
     }
 
-    size_t processors = GetProcessorsUsed(*test);
+    size_t processors = GetProcessorsUsed(test);
     bool testLoadOk = true;
     if (this->TestLoad > 0) {
       if (processors <= spareLoad) {
         cmCTestLog(this->CTest, DEBUG, "OK to run "
-                     << GetName(*test) << ", it requires " << processors
+                     << GetName(test) << ", it requires " << processors
                      << " procs & system load is: " << systemLoad
                      << std::endl);
         allTestsFailedTestLoadCheck = false;
@@ -318,10 +311,10 @@ void cmCTestMultiProcessHandler::StartNextTests()
 
     if (processors <= minProcessorsRequired) {
       minProcessorsRequired = processors;
-      testWithMinProcessors = GetName(*test);
+      testWithMinProcessors = GetName(test);
     }
 
-    if (testLoadOk && processors <= numToStart && this->StartTest(*test)) {
+    if (testLoadOk && processors <= numToStart && this->StartTest(test)) {
       if (this->StopTimePassed) {
         return;
       }
@@ -368,18 +361,13 @@ bool cmCTestMultiProcessHandler::CheckOutput()
   }
   std::vector<cmCTestRunTest*> finished;
   std::string out, err;
-  for (std::set<cmCTestRunTest*>::const_iterator i =
-         this->RunningTests.begin();
-       i != this->RunningTests.end(); ++i) {
-    cmCTestRunTest* p = *i;
+  for (cmCTestRunTest* p : this->RunningTests) {
     if (!p->CheckOutput()) {
       finished.push_back(p);
     }
   }
-  for (std::vector<cmCTestRunTest*>::iterator i = finished.begin();
-       i != finished.end(); ++i) {
+  for (cmCTestRunTest* p : finished) {
     this->Completed++;
-    cmCTestRunTest* p = *i;
     int test = p->GetIndex();
 
     bool testResult = p->EndTest(this->Completed, this->Total, true);
@@ -392,9 +380,8 @@ bool cmCTestMultiProcessHandler::CheckOutput()
     } else {
       this->Failed->push_back(p->GetTestProperties()->Name);
     }
-    for (TestMap::iterator j = this->Tests.begin(); j != this->Tests.end();
-         ++j) {
-      j->second.erase(test);
+    for (auto& t : this->Tests) {
+      t.second.erase(test);
     }
     this->TestFinishMap[test] = true;
     this->TestRunningMap[test] = false;
@@ -451,16 +438,15 @@ void cmCTestMultiProcessHandler::UpdateCostData()
   }
 
   // Add all tests not previously listed in the file
-  for (PropertiesMap::iterator i = temp.begin(); i != temp.end(); ++i) {
-    fout << i->second->Name << " " << i->second->PreviousRuns << " "
-         << i->second->Cost << "\n";
+  for (auto const& i : temp) {
+    fout << i.second->Name << " " << i.second->PreviousRuns << " "
+         << i.second->Cost << "\n";
   }
 
   // Write list of failed tests
   fout << "---\n";
-  for (std::vector<std::string>::iterator i = this->Failed->begin();
-       i != this->Failed->end(); ++i) {
-    fout << *i << "\n";
+  for (std::string const& f : *this->Failed) {
+    fout << f << "\n";
   }
   fout.close();
   cmSystemTools::RenameFile(tmpout.c_str(), fname.c_str());
@@ -505,7 +491,7 @@ void cmCTestMultiProcessHandler::ReadCostData()
     }
     // Next part of the file is the failed tests
     while (std::getline(fin, line)) {
-      if (line != "") {
+      if (!line.empty()) {
         this->LastTestsFailed.push_back(line);
       }
     }
@@ -517,10 +503,9 @@ int cmCTestMultiProcessHandler::SearchByName(std::string const& name)
 {
   int index = -1;
 
-  for (PropertiesMap::iterator i = this->Properties.begin();
-       i != this->Properties.end(); ++i) {
-    if (i->second->Name == name) {
-      index = i->first;
+  for (auto const& p : this->Properties) {
+    if (p.second->Name == name) {
+      index = p.first;
     }
   }
   return index;
@@ -545,16 +530,15 @@ void cmCTestMultiProcessHandler::CreateParallelTestCostList()
 
   // In parallel test runs add previously failed tests to the front
   // of the cost list and queue other tests for further sorting
-  for (TestMap::const_iterator i = this->Tests.begin(); i != this->Tests.end();
-       ++i) {
+  for (auto const& t : this->Tests) {
     if (std::find(this->LastTestsFailed.begin(), this->LastTestsFailed.end(),
-                  this->Properties[i->first]->Name) !=
+                  this->Properties[t.first]->Name) !=
         this->LastTestsFailed.end()) {
       // If the test failed last time, it should be run first.
-      this->SortedTests.push_back(i->first);
-      alreadySortedTests.insert(i->first);
+      this->SortedTests.push_back(t.first);
+      alreadySortedTests.insert(t.first);
     } else {
-      topLevel.insert(i->first);
+      topLevel.insert(t.first);
     }
   }
 
@@ -566,15 +550,13 @@ void cmCTestMultiProcessHandler::CreateParallelTestCostList()
     priorityStack.push_back(TestSet());
     TestSet& currentSet = priorityStack.back();
 
-    for (TestSet::const_iterator i = previousSet.begin();
-         i != previousSet.end(); ++i) {
-      TestSet const& dependencies = this->Tests[*i];
+    for (auto const& i : previousSet) {
+      TestSet const& dependencies = this->Tests[i];
       currentSet.insert(dependencies.begin(), dependencies.end());
     }
 
-    for (TestSet::const_iterator i = currentSet.begin(); i != currentSet.end();
-         ++i) {
-      previousSet.erase(*i);
+    for (auto const& i : currentSet) {
+      previousSet.erase(i);
     }
   }
 
@@ -594,11 +576,10 @@ void cmCTestMultiProcessHandler::CreateParallelTestCostList()
 
     std::stable_sort(sortedCopy.begin(), sortedCopy.end(), comp);
 
-    for (TestList::const_iterator j = sortedCopy.begin();
-         j != sortedCopy.end(); ++j) {
-      if (alreadySortedTests.find(*j) == alreadySortedTests.end()) {
-        this->SortedTests.push_back(*j);
-        alreadySortedTests.insert(*j);
+    for (auto const& j : sortedCopy) {
+      if (alreadySortedTests.find(j) == alreadySortedTests.end()) {
+        this->SortedTests.push_back(j);
+        alreadySortedTests.insert(j);
       }
     }
   }
@@ -608,10 +589,9 @@ void cmCTestMultiProcessHandler::GetAllTestDependencies(int test,
                                                         TestList& dependencies)
 {
   TestSet const& dependencySet = this->Tests[test];
-  for (TestSet::const_iterator i = dependencySet.begin();
-       i != dependencySet.end(); ++i) {
-    GetAllTestDependencies(*i, dependencies);
-    dependencies.push_back(*i);
+  for (int i : dependencySet) {
+    GetAllTestDependencies(i, dependencies);
+    dependencies.push_back(i);
   }
 }
 
@@ -619,9 +599,8 @@ void cmCTestMultiProcessHandler::CreateSerialTestCostList()
 {
   TestList presortedList;
 
-  for (TestMap::iterator i = this->Tests.begin(); i != this->Tests.end();
-       ++i) {
-    presortedList.push_back(i->first);
+  for (auto const& i : this->Tests) {
+    presortedList.push_back(i.first);
   }
 
   TestComparator comp(this);
@@ -629,10 +608,7 @@ void cmCTestMultiProcessHandler::CreateSerialTestCostList()
 
   TestSet alreadySortedTests;
 
-  for (TestList::const_iterator i = presortedList.begin();
-       i != presortedList.end(); ++i) {
-    int test = *i;
-
+  for (int test : presortedList) {
     if (alreadySortedTests.find(test) != alreadySortedTests.end()) {
       continue;
     }
@@ -640,10 +616,7 @@ void cmCTestMultiProcessHandler::CreateSerialTestCostList()
     TestList dependencies;
     GetAllTestDependencies(test, dependencies);
 
-    for (TestList::const_iterator j = dependencies.begin();
-         j != dependencies.end(); ++j) {
-      int testDependency = *j;
-
+    for (int testDependency : dependencies) {
       if (alreadySortedTests.find(testDependency) ==
           alreadySortedTests.end()) {
         alreadySortedTests.insert(testDependency);
@@ -679,10 +652,9 @@ void cmCTestMultiProcessHandler::PrintTestList()
   this->TestHandler->SetMaxIndex(this->FindMaxIndex());
   int count = 0;
 
-  for (PropertiesMap::iterator it = this->Properties.begin();
-       it != this->Properties.end(); ++it) {
+  for (auto& it : this->Properties) {
     count++;
-    cmCTestTestHandler::cmCTestTestProperties& p = *it->second;
+    cmCTestTestHandler::cmCTestTestProperties& p = *it.second;
 
     cmWorkingDirectory workdir(p.Directory);
 
@@ -696,9 +668,8 @@ void cmCTestMultiProcessHandler::PrintTestList()
       cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT, "Labels:",
                          this->Quiet);
     }
-    for (std::vector<std::string>::iterator label = p.Labels.begin();
-         label != p.Labels.end(); ++label) {
-      cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT, " " << *label,
+    for (std::string const& label : p.Labels) {
+      cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT, " " << label,
                          this->Quiet);
     }
     if (!p.Labels.empty()) // print the labels
@@ -737,9 +708,8 @@ void cmCTestMultiProcessHandler::PrintTestList()
 void cmCTestMultiProcessHandler::PrintLabels()
 {
   std::set<std::string> allLabels;
-  for (PropertiesMap::iterator it = this->Properties.begin();
-       it != this->Properties.end(); ++it) {
-    cmCTestTestHandler::cmCTestTestProperties& p = *it->second;
+  for (auto& it : this->Properties) {
+    cmCTestTestHandler::cmCTestTestProperties& p = *it.second;
     allLabels.insert(p.Labels.begin(), p.Labels.end());
   }
 
@@ -750,10 +720,9 @@ void cmCTestMultiProcessHandler::PrintLabels()
     cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT,
                        "No Labels Exist" << std::endl, this->Quiet);
   }
-  for (std::set<std::string>::iterator label = allLabels.begin();
-       label != allLabels.end(); ++label) {
-    cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT,
-                       "  " << *label << std::endl, this->Quiet);
+  for (std::string const& label : allLabels) {
+    cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT, "  " << label << std::endl,
+                       this->Quiet);
   }
 }
 
@@ -794,10 +763,9 @@ void cmCTestMultiProcessHandler::RemoveTest(int index)
 int cmCTestMultiProcessHandler::FindMaxIndex()
 {
   int max = 0;
-  cmCTestMultiProcessHandler::TestMap::iterator i = this->Tests.begin();
-  for (; i != this->Tests.end(); ++i) {
-    if (i->first > max) {
-      max = i->first;
+  for (auto const& i : this->Tests) {
+    if (i.first > max) {
+      max = i.first;
     }
   }
   return max;
@@ -809,10 +777,9 @@ bool cmCTestMultiProcessHandler::CheckCycles()
   cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                      "Checking test dependency graph..." << std::endl,
                      this->Quiet);
-  for (TestMap::iterator it = this->Tests.begin(); it != this->Tests.end();
-       ++it) {
+  for (auto const& it : this->Tests) {
     // DFS from each element to itself
-    int root = it->first;
+    int root = it.first;
     std::set<int> visited;
     std::stack<int> s;
     s.push(root);
@@ -820,9 +787,8 @@ bool cmCTestMultiProcessHandler::CheckCycles()
       int test = s.top();
       s.pop();
       if (visited.insert(test).second) {
-        for (TestSet::iterator d = this->Tests[test].begin();
-             d != this->Tests[test].end(); ++d) {
-          if (*d == root) {
+        for (auto const& d : this->Tests[test]) {
+          if (d == root) {
             // cycle exists
             cmCTestLog(
               this->CTest, ERROR_MESSAGE,
@@ -832,7 +798,7 @@ bool cmCTestMultiProcessHandler::CheckCycles()
                 << "\".\nPlease fix the cycle and run ctest again.\n");
             return false;
           }
-          s.push(*d);
+          s.push(d);
         }
       }
     }
diff --git a/Source/CTest/cmCTestP4.cxx b/Source/CTest/cmCTestP4.cxx
index c80221634..fdf893243 100644
--- a/Source/CTest/cmCTestP4.cxx
+++ b/Source/CTest/cmCTestP4.cxx
@@ -37,7 +37,7 @@ private:
   std::string& Rev;
   cmsys::RegularExpression RegexIdentify;
 
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->RegexIdentify.find(this->Line)) {
       this->Rev = this->RegexIdentify.match(1);
@@ -61,7 +61,7 @@ private:
   cmsys::RegularExpression RegexIdentify;
   cmCTestP4* P4;
 
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->RegexIdentify.find(this->Line)) {
       P4->ChangeLists.push_back(this->RegexIdentify.match(1));
@@ -84,7 +84,7 @@ private:
   cmsys::RegularExpression RegexUser;
   cmCTestP4* P4;
 
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->RegexUser.find(this->Line)) {
       User NewUser;
@@ -127,7 +127,7 @@ private:
   std::string CurrentPath;
   cmsys::RegularExpression RegexDiff;
 
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (!this->Line.empty() && this->Line[0] == '=' &&
         this->RegexDiff.find(this->Line)) {
@@ -155,7 +155,7 @@ cmCTestP4::User cmCTestP4::GetUserData(const std::string& username)
     p4_users.push_back("-m");
     p4_users.push_back("1");
     p4_users.push_back(username.c_str());
-    p4_users.push_back(CM_NULLPTR);
+    p4_users.push_back(nullptr);
 
     UserParser out(this, "users-out> ");
     OutputLogger err(this->Log, "users-err> ");
@@ -217,7 +217,7 @@ private:
   SectionType Section;
   Revision Rev;
 
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->Line.empty()) {
       this->NextSection();
@@ -332,9 +332,8 @@ void cmCTestP4::SetP4Options(std::vector<char const*>& CommandOptions)
   }
 
   CommandOptions.clear();
-  for (std::vector<std::string>::iterator i = P4Options.begin();
-       i != P4Options.end(); ++i) {
-    CommandOptions.push_back(i->c_str());
+  for (std::string const& o : P4Options) {
+    CommandOptions.push_back(o.c_str());
   }
 }
 
@@ -350,7 +349,7 @@ std::string cmCTestP4::GetWorkingRevision()
 
   std::string source = this->SourceDirectory + "/...#have";
   p4_identify.push_back(source.c_str());
-  p4_identify.push_back(CM_NULLPTR);
+  p4_identify.push_back(nullptr);
 
   std::string rev;
   IdentifyParser out(this, "p4_changes-out> ", rev);
@@ -411,7 +410,7 @@ bool cmCTestP4::LoadRevisions()
 
   p4_changes.push_back("changes");
   p4_changes.push_back(range.c_str());
-  p4_changes.push_back(CM_NULLPTR);
+  p4_changes.push_back(nullptr);
 
   ChangesParser out(this, "p4_changes-out> ");
   OutputLogger err(this->Log, "p4_changes-err> ");
@@ -431,7 +430,7 @@ bool cmCTestP4::LoadRevisions()
     p4_describe.push_back("describe");
     p4_describe.push_back("-s");
     p4_describe.push_back(i->c_str());
-    p4_describe.push_back(CM_NULLPTR);
+    p4_describe.push_back(nullptr);
 
     DescribeParser outDescribe(this, "p4_describe-out> ");
     OutputLogger errDescribe(this->Log, "p4_describe-err> ");
@@ -451,7 +450,7 @@ bool cmCTestP4::LoadModifications()
   p4_diff.push_back("-dn");
   std::string source = this->SourceDirectory + "/...";
   p4_diff.push_back(source.c_str());
-  p4_diff.push_back(CM_NULLPTR);
+  p4_diff.push_back(nullptr);
 
   DiffParser out(this, "p4_diff-out> ");
   OutputLogger err(this->Log, "p4_diff-err> ");
@@ -465,11 +464,11 @@ bool cmCTestP4::UpdateCustom(const std::string& custom)
   cmSystemTools::ExpandListArgument(custom, p4_custom_command, true);
 
   std::vector<char const*> p4_custom;
-  for (std::vector<std::string>::const_iterator i = p4_custom_command.begin();
-       i != p4_custom_command.end(); ++i) {
-    p4_custom.push_back(i->c_str());
+  p4_custom.reserve(p4_custom_command.size() + 1);
+  for (std::string const& i : p4_custom_command) {
+    p4_custom.push_back(i.c_str());
   }
-  p4_custom.push_back(CM_NULLPTR);
+  p4_custom.push_back(nullptr);
 
   OutputLogger custom_out(this->Log, "p4_customsync-out> ");
   OutputLogger custom_err(this->Log, "p4_customsync-err> ");
@@ -502,9 +501,8 @@ bool cmCTestP4::UpdateImpl()
     opts = this->CTest->GetCTestConfiguration("P4UpdateOptions");
   }
   std::vector<std::string> args = cmSystemTools::ParseArguments(opts.c_str());
-  for (std::vector<std::string>::const_iterator ai = args.begin();
-       ai != args.end(); ++ai) {
-    p4_sync.push_back(ai->c_str());
+  for (std::string const& arg : args) {
+    p4_sync.push_back(arg.c_str());
   }
 
   std::string source = this->SourceDirectory + "/...";
@@ -520,7 +518,7 @@ bool cmCTestP4::UpdateImpl()
   }
 
   p4_sync.push_back(source.c_str());
-  p4_sync.push_back(CM_NULLPTR);
+  p4_sync.push_back(nullptr);
 
   OutputLogger out(this->Log, "p4_sync-out> ");
   OutputLogger err(this->Log, "p4_sync-err> ");
diff --git a/Source/CTest/cmCTestP4.h b/Source/CTest/cmCTestP4.h
index e234efbfb..b14edf7e9 100644
--- a/Source/CTest/cmCTestP4.h
+++ b/Source/CTest/cmCTestP4.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestP4_h
 #define cmCTestP4_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestGlobalVC.h"
 
@@ -24,7 +24,7 @@ public:
   /** Construct with a CTest instance and update log stream.  */
   cmCTestP4(cmCTest* ctest, std::ostream& log);
 
-  ~cmCTestP4() CM_OVERRIDE;
+  ~cmCTestP4() override;
 
 private:
   std::vector<std::string> ChangeLists;
@@ -51,13 +51,13 @@ private:
   void SetP4Options(std::vector<char const*>& options);
 
   std::string GetWorkingRevision();
-  bool NoteOldRevision() CM_OVERRIDE;
-  bool NoteNewRevision() CM_OVERRIDE;
-  bool UpdateImpl() CM_OVERRIDE;
+  bool NoteOldRevision() override;
+  bool NoteNewRevision() override;
+  bool UpdateImpl() override;
   bool UpdateCustom(const std::string& custom);
 
-  bool LoadRevisions() CM_OVERRIDE;
-  bool LoadModifications() CM_OVERRIDE;
+  bool LoadRevisions() override;
+  bool LoadModifications() override;
 
   class ChangesParser;
   class DescribeParser;
diff --git a/Source/CTest/cmCTestReadCustomFilesCommand.cxx b/Source/CTest/cmCTestReadCustomFilesCommand.cxx
index b21be872f..ed14d0688 100644
--- a/Source/CTest/cmCTestReadCustomFilesCommand.cxx
+++ b/Source/CTest/cmCTestReadCustomFilesCommand.cxx
@@ -14,9 +14,8 @@ bool cmCTestReadCustomFilesCommand::InitialPass(
     return false;
   }
 
-  std::vector<std::string>::const_iterator dit;
-  for (dit = args.begin(); dit != args.end(); ++dit) {
-    this->CTest->ReadCustomConfigurationFileTree(dit->c_str(), this->Makefile);
+  for (std::string const& arg : args) {
+    this->CTest->ReadCustomConfigurationFileTree(arg.c_str(), this->Makefile);
   }
 
   return true;
diff --git a/Source/CTest/cmCTestReadCustomFilesCommand.h b/Source/CTest/cmCTestReadCustomFilesCommand.h
index 5989fa0fc..ba25c516c 100644
--- a/Source/CTest/cmCTestReadCustomFilesCommand.h
+++ b/Source/CTest/cmCTestReadCustomFilesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestReadCustomFilesCommand_h
 #define cmCTestReadCustomFilesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestCommand.h"
 
@@ -27,7 +27,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestReadCustomFilesCommand* ni = new cmCTestReadCustomFilesCommand;
     ni->CTest = this->CTest;
@@ -39,7 +39,7 @@ public:
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/CTest/cmCTestRunScriptCommand.h b/Source/CTest/cmCTestRunScriptCommand.h
index 9bd09659d..9d8b4b587 100644
--- a/Source/CTest/cmCTestRunScriptCommand.h
+++ b/Source/CTest/cmCTestRunScriptCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestRunScriptCommand_h
 #define cmCTestRunScriptCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestCommand.h"
 
@@ -27,7 +27,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestRunScriptCommand* ni = new cmCTestRunScriptCommand;
     ni->CTest = this->CTest;
@@ -40,7 +40,7 @@ public:
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/CTest/cmCTestRunTest.cxx b/Source/CTest/cmCTestRunTest.cxx
index 0c4269e3d..abdb6433f 100644
--- a/Source/CTest/cmCTestRunTest.cxx
+++ b/Source/CTest/cmCTestRunTest.cxx
@@ -9,7 +9,6 @@
 #include "cmSystemTools.h"
 #include "cmWorkingDirectory.h"
 
-#include "cmConfigure.h"
 #include "cm_curl.h"
 #include "cm_zlib.h"
 #include "cmsys/Base64.h"
@@ -25,14 +24,14 @@ cmCTestRunTest::cmCTestRunTest(cmCTestTestHandler* handler)
 {
   this->CTest = handler->CTest;
   this->TestHandler = handler;
-  this->TestProcess = CM_NULLPTR;
+  this->TestProcess = nullptr;
   this->TestResult.ExecutionTime = 0;
   this->TestResult.ReturnValue = 0;
   this->TestResult.Status = cmCTestTestHandler::NOT_RUN;
   this->TestResult.TestCount = 0;
-  this->TestResult.Properties = CM_NULLPTR;
-  this->ProcessOutput = "";
-  this->CompressedOutput = "";
+  this->TestResult.Properties = nullptr;
+  this->ProcessOutput.clear();
+  this->CompressedOutput.clear();
   this->CompressionRatio = 2;
   this->StopTimePassed = false;
   this->NumberOfRunsLeft = 1; // default to 1 run of the test
@@ -65,12 +64,8 @@ bool cmCTestRunTest::CheckOutput()
 
       // Check for TIMEOUT_AFTER_MATCH property.
       if (!this->TestProperties->TimeoutRegularExpressions.empty()) {
-        std::vector<
-          std::pair<cmsys::RegularExpression, std::string> >::iterator regIt;
-        for (regIt = this->TestProperties->TimeoutRegularExpressions.begin();
-             regIt != this->TestProperties->TimeoutRegularExpressions.end();
-             ++regIt) {
-          if (regIt->first.find(this->ProcessOutput.c_str())) {
+        for (auto& reg : this->TestProperties->TimeoutRegularExpressions) {
+          if (reg.first.find(this->ProcessOutput.c_str())) {
             cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT, this->GetIndex()
                          << ": "
                          << "Test timeout changed to "
@@ -164,18 +159,14 @@ bool cmCTestRunTest::EndTest(size_t completed, size_t total, bool started)
   int res =
     started ? this->TestProcess->GetProcessStatus() : cmsysProcess_State_Error;
   int retVal = this->TestProcess->GetExitValue();
-  std::vector<std::pair<cmsys::RegularExpression, std::string> >::iterator
-    passIt;
   bool forceFail = false;
   bool skipped = false;
   bool outputTestErrorsToConsole = false;
   if (!this->TestProperties->RequiredRegularExpressions.empty() &&
       this->FailedDependencies.empty()) {
     bool found = false;
-    for (passIt = this->TestProperties->RequiredRegularExpressions.begin();
-         passIt != this->TestProperties->RequiredRegularExpressions.end();
-         ++passIt) {
-      if (passIt->first.find(this->ProcessOutput.c_str())) {
+    for (auto& pass : this->TestProperties->RequiredRegularExpressions) {
+      if (pass.first.find(this->ProcessOutput.c_str())) {
         found = true;
         reason = "Required regular expression found.";
         break;
@@ -186,23 +177,19 @@ bool cmCTestRunTest::EndTest(size_t completed, size_t total, bool started)
       forceFail = true;
     }
     reason += "Regex=[";
-    for (passIt = this->TestProperties->RequiredRegularExpressions.begin();
-         passIt != this->TestProperties->RequiredRegularExpressions.end();
-         ++passIt) {
-      reason += passIt->second;
+    for (auto& pass : this->TestProperties->RequiredRegularExpressions) {
+      reason += pass.second;
       reason += "\n";
     }
     reason += "]";
   }
   if (!this->TestProperties->ErrorRegularExpressions.empty() &&
       this->FailedDependencies.empty()) {
-    for (passIt = this->TestProperties->ErrorRegularExpressions.begin();
-         passIt != this->TestProperties->ErrorRegularExpressions.end();
-         ++passIt) {
-      if (passIt->first.find(this->ProcessOutput.c_str())) {
+    for (auto& pass : this->TestProperties->ErrorRegularExpressions) {
+      if (pass.first.find(this->ProcessOutput.c_str())) {
         reason = "Error regular expression found in output.";
         reason += " Regex=[";
-        reason += passIt->second;
+        reason += pass.second;
         reason += "]";
         forceFail = true;
         break;
@@ -237,6 +224,8 @@ bool cmCTestRunTest::EndTest(size_t completed, size_t total, bool started)
   } else if (res == cmsysProcess_State_Exception) {
     outputTestErrorsToConsole = this->CTest->OutputTestOutputOnTestFailure;
     cmCTestLog(this->CTest, HANDLER_OUTPUT, "***Exception: ");
+    this->TestResult.ExceptionStatus =
+      this->TestProcess->GetExitExceptionString();
     switch (this->TestProcess->GetExitException()) {
       case cmsysProcess_Exception_Fault:
         cmCTestLog(this->CTest, HANDLER_OUTPUT, "SegFault");
@@ -255,7 +244,8 @@ bool cmCTestRunTest::EndTest(size_t completed, size_t total, bool started)
         this->TestResult.Status = cmCTestTestHandler::NUMERICAL;
         break;
       default:
-        cmCTestLog(this->CTest, HANDLER_OUTPUT, "Other");
+        cmCTestLog(this->CTest, HANDLER_OUTPUT,
+                   this->TestResult.ExceptionStatus);
         this->TestResult.Status = cmCTestTestHandler::OTHER_FAULT;
     }
   } else if ("Disabled" == this->TestResult.CompletionStatus) {
@@ -436,7 +426,7 @@ bool cmCTestRunTest::StartTest(size_t total)
     this->TestResult.Path = this->TestProperties->Directory;
     this->TestProcess = new cmProcess;
     this->TestResult.Output = "Disabled";
-    this->TestResult.FullCommandLine = "";
+    this->TestResult.FullCommandLine.clear();
     return false;
   }
 
@@ -455,15 +445,13 @@ bool cmCTestRunTest::StartTest(size_t total)
   if (!this->FailedDependencies.empty()) {
     this->TestProcess = new cmProcess;
     std::string msg = "Failed test dependencies:";
-    for (std::set<std::string>::const_iterator it =
-           this->FailedDependencies.begin();
-         it != this->FailedDependencies.end(); ++it) {
-      msg += " " + *it;
+    for (std::string const& failedDep : this->FailedDependencies) {
+      msg += " " + failedDep;
     }
     *this->TestHandler->LogFile << msg << std::endl;
     cmCTestLog(this->CTest, HANDLER_OUTPUT, msg << std::endl);
     this->TestResult.Output = msg;
-    this->TestResult.FullCommandLine = "";
+    this->TestResult.FullCommandLine.clear();
     this->TestResult.CompletionStatus = "Fixture dependency failed";
     this->TestResult.Status = cmCTestTestHandler::NOT_RUN;
     return false;
@@ -483,18 +471,14 @@ bool cmCTestRunTest::StartTest(size_t total)
     *this->TestHandler->LogFile << msg << std::endl;
     cmCTestLog(this->CTest, ERROR_MESSAGE, msg << std::endl);
     this->TestResult.Output = msg;
-    this->TestResult.FullCommandLine = "";
+    this->TestResult.FullCommandLine.clear();
     this->TestResult.CompletionStatus = "Missing Configuration";
     this->TestResult.Status = cmCTestTestHandler::NOT_RUN;
     return false;
   }
 
   // Check if all required files exist
-  for (std::vector<std::string>::iterator i =
-         this->TestProperties->RequiredFiles.begin();
-       i != this->TestProperties->RequiredFiles.end(); ++i) {
-    std::string file = *i;
-
+  for (std::string const& file : this->TestProperties->RequiredFiles) {
     if (!cmSystemTools::FileExists(file.c_str())) {
       // Required file was not found
       this->TestProcess = new cmProcess;
@@ -503,14 +487,14 @@ bool cmCTestRunTest::StartTest(size_t total)
       cmCTestLog(this->CTest, ERROR_MESSAGE,
                  "Unable to find required file: " << file << std::endl);
       this->TestResult.Output = "Unable to find required file: " + file;
-      this->TestResult.FullCommandLine = "";
+      this->TestResult.FullCommandLine.clear();
       this->TestResult.CompletionStatus = "Required Files Missing";
       this->TestResult.Status = cmCTestTestHandler::NOT_RUN;
       return false;
     }
   }
   // log and return if we did not find the executable
-  if (this->ActualCommand == "") {
+  if (this->ActualCommand.empty()) {
     // if the command was not found create a TestResult object
     // that has that information
     this->TestProcess = new cmProcess;
@@ -519,7 +503,7 @@ bool cmCTestRunTest::StartTest(size_t total)
     cmCTestLog(this->CTest, ERROR_MESSAGE,
                "Unable to find executable: " << args[1] << std::endl);
     this->TestResult.Output = "Unable to find executable: " + args[1];
-    this->TestResult.FullCommandLine = "";
+    this->TestResult.FullCommandLine.clear();
     this->TestResult.CompletionStatus = "Unable to find executable";
     this->TestResult.Status = cmCTestTestHandler::NOT_RUN;
     return false;
@@ -558,10 +542,9 @@ void cmCTestRunTest::ComputeArguments()
 
   // Prepends memcheck args to our command string
   this->TestHandler->GenerateTestCommand(this->Arguments, this->Index);
-  for (std::vector<std::string>::iterator i = this->Arguments.begin();
-       i != this->Arguments.end(); ++i) {
+  for (std::string const& arg : this->Arguments) {
     testCommand += " \"";
-    testCommand += *i;
+    testCommand += arg;
     testCommand += "\"";
   }
 
@@ -585,10 +568,8 @@ void cmCTestRunTest::ComputeArguments()
                  << ": "
                  << "Environment variables: " << std::endl);
   }
-  for (std::vector<std::string>::const_iterator e =
-         this->TestProperties->Environment.begin();
-       e != this->TestProperties->Environment.end(); ++e) {
-    cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT, this->Index << ":  " << *e
+  for (std::string const& env : this->TestProperties->Environment) {
+    cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT, this->Index << ":  " << env
                                                                 << std::endl);
   }
 }
@@ -614,11 +595,11 @@ double cmCTestRunTest::ResolveTimeout()
 {
   double timeout = this->TestProperties->Timeout;
 
-  if (this->CTest->GetStopTime() == "") {
+  if (this->CTest->GetStopTime().empty()) {
     return timeout;
   }
   struct tm* lctime;
-  time_t current_time = time(CM_NULLPTR);
+  time_t current_time = time(nullptr);
   lctime = gmtime(&current_time);
   int gm_hour = lctime->tm_hour;
   time_t gm_time = mktime(lctime);
@@ -762,9 +743,8 @@ void cmCTestRunTest::WriteLogOutputTop(size_t completed, size_t total)
                               << std::endl;
   *this->TestHandler->LogFile << "Command: \"" << this->ActualCommand << "\"";
 
-  for (std::vector<std::string>::iterator i = this->Arguments.begin();
-       i != this->Arguments.end(); ++i) {
-    *this->TestHandler->LogFile << " \"" << *i << "\"";
+  for (std::string const& arg : this->Arguments) {
+    *this->TestHandler->LogFile << " \"" << arg << "\"";
   }
   *this->TestHandler->LogFile
     << std::endl
diff --git a/Source/CTest/cmCTestSVN.cxx b/Source/CTest/cmCTestSVN.cxx
index f60f78c21..ce9622492 100644
--- a/Source/CTest/cmCTestSVN.cxx
+++ b/Source/CTest/cmCTestSVN.cxx
@@ -59,7 +59,7 @@ private:
   cmsys::RegularExpression RegexRev;
   cmsys::RegularExpression RegexURL;
   cmsys::RegularExpression RegexRoot;
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->RegexRev.find(this->Line)) {
       this->Rev = this->RegexRev.match(1);
@@ -103,10 +103,7 @@ bool cmCTestSVN::NoteOldRevision()
     return false;
   }
 
-  std::vector<SVNInfo>::iterator itbeg = this->Repositories.begin();
-  std::vector<SVNInfo>::iterator itend = this->Repositories.end();
-  for (; itbeg != itend; itbeg++) {
-    SVNInfo& svninfo = *itbeg;
+  for (SVNInfo& svninfo : this->Repositories) {
     svninfo.OldRevision = this->LoadInfo(svninfo);
     this->Log << "Revision for repository '" << svninfo.LocalPath
               << "' before update: " << svninfo.OldRevision << "\n";
@@ -127,10 +124,7 @@ bool cmCTestSVN::NoteNewRevision()
     return false;
   }
 
-  std::vector<SVNInfo>::iterator itbeg = this->Repositories.begin();
-  std::vector<SVNInfo>::iterator itend = this->Repositories.end();
-  for (; itbeg != itend; itbeg++) {
-    SVNInfo& svninfo = *itbeg;
+  for (SVNInfo& svninfo : this->Repositories) {
     svninfo.NewRevision = this->LoadInfo(svninfo);
     this->Log << "Revision for repository '" << svninfo.LocalPath
               << "' after update: " << svninfo.NewRevision << "\n";
@@ -205,7 +199,7 @@ private:
   cmCTestSVN* SVN;
   cmsys::RegularExpression RegexUpdate;
 
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->RegexUpdate.find(this->Line)) {
       this->DoPath(this->RegexUpdate.match(1)[0],
@@ -257,9 +251,8 @@ bool cmCTestSVN::UpdateImpl()
 
   std::vector<char const*> svn_update;
   svn_update.push_back("update");
-  for (std::vector<std::string>::const_iterator ai = args.begin();
-       ai != args.end(); ++ai) {
-    svn_update.push_back(ai->c_str());
+  for (std::string const& arg : args) {
+    svn_update.push_back(arg.c_str());
   }
 
   UpdateParser out(this, "up-out> ");
@@ -285,12 +278,11 @@ bool cmCTestSVN::RunSVNCommand(std::vector<char const*> const& parameters,
 
   std::vector<std::string> parsedUserOptions =
     cmSystemTools::ParseArguments(userOptions.c_str());
-  for (std::vector<std::string>::iterator i = parsedUserOptions.begin();
-       i != parsedUserOptions.end(); ++i) {
-    args.push_back(i->c_str());
+  for (std::string const& opt : parsedUserOptions) {
+    args.push_back(opt.c_str());
   }
 
-  args.push_back(CM_NULLPTR);
+  args.push_back(nullptr);
 
   if (strcmp(parameters[0], "update") == 0) {
     return RunUpdateCommand(&args[0], out, err);
@@ -309,7 +301,7 @@ public:
   {
     this->InitializeParser();
   }
-  ~LogParser() CM_OVERRIDE { this->CleanupParser(); }
+  ~LogParser() override { this->CleanupParser(); }
 private:
   cmCTestSVN* SVN;
   cmCTestSVN::SVNInfo& SVNRepo;
@@ -321,14 +313,14 @@ private:
   Change CurChange;
   std::vector<char> CData;
 
-  bool ProcessChunk(const char* data, int length) CM_OVERRIDE
+  bool ProcessChunk(const char* data, int length) override
   {
     this->OutputLogger::ProcessChunk(data, length);
     this->ParseChunk(data, length);
     return true;
   }
 
-  void StartElement(const std::string& name, const char** atts) CM_OVERRIDE
+  void StartElement(const std::string& name, const char** atts) override
   {
     this->CData.clear();
     if (name == "logentry") {
@@ -346,12 +338,12 @@ private:
     }
   }
 
-  void CharacterDataHandler(const char* data, int length) CM_OVERRIDE
+  void CharacterDataHandler(const char* data, int length) override
   {
     this->CData.insert(this->CData.end(), data, data + length);
   }
 
-  void EndElement(const std::string& name) CM_OVERRIDE
+  void EndElement(const std::string& name) override
   {
     if (name == "logentry") {
       this->SVN->DoRevisionSVN(this->Rev, this->Changes);
@@ -370,7 +362,7 @@ private:
     this->CData.clear();
   }
 
-  void ReportError(int /*line*/, int /*column*/, const char* msg) CM_OVERRIDE
+  void ReportError(int /*line*/, int /*column*/, const char* msg) override
   {
     this->SVN->Log << "Error parsing svn log xml: " << msg << "\n";
   }
@@ -380,10 +372,7 @@ bool cmCTestSVN::LoadRevisions()
 {
   bool result = true;
   // Get revisions for all the external repositories
-  std::vector<SVNInfo>::iterator itbeg = this->Repositories.begin();
-  std::vector<SVNInfo>::iterator itend = this->Repositories.end();
-  for (; itbeg != itend; itbeg++) {
-    SVNInfo& svninfo = *itbeg;
+  for (SVNInfo& svninfo : this->Repositories) {
     result = this->LoadRevisions(svninfo) && result;
   }
   return result;
@@ -421,7 +410,7 @@ void cmCTestSVN::DoRevisionSVN(Revision const& revision,
 
   // Ignore changes in the old revision for external repositories
   if (revision.Rev == revision.SVNInfo->OldRevision &&
-      revision.SVNInfo->LocalPath != "") {
+      !revision.SVNInfo->LocalPath.empty()) {
     return;
   }
 
@@ -441,7 +430,7 @@ public:
 private:
   cmCTestSVN* SVN;
   cmsys::RegularExpression RegexStatus;
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->RegexStatus.find(this->Line)) {
       this->DoPath(this->RegexStatus.match(1)[0],
@@ -507,7 +496,7 @@ public:
 private:
   cmCTestSVN* SVN;
   cmsys::RegularExpression RegexExternal;
-  bool ProcessLine() CM_OVERRIDE
+  bool ProcessLine() override
   {
     if (this->RegexExternal.find(this->Line)) {
       this->DoPath(this->RegexExternal.match(1));
diff --git a/Source/CTest/cmCTestSVN.h b/Source/CTest/cmCTestSVN.h
index 46b077835..dbc7fdef6 100644
--- a/Source/CTest/cmCTestSVN.h
+++ b/Source/CTest/cmCTestSVN.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestSVN_h
 #define cmCTestSVN_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestGlobalVC.h"
 
@@ -24,14 +24,14 @@ public:
   /** Construct with a CTest instance and update log stream.  */
   cmCTestSVN(cmCTest* ctest, std::ostream& log);
 
-  ~cmCTestSVN() CM_OVERRIDE;
+  ~cmCTestSVN() override;
 
 private:
   // Implement cmCTestVC internal API.
-  void CleanupImpl() CM_OVERRIDE;
-  bool NoteOldRevision() CM_OVERRIDE;
-  bool NoteNewRevision() CM_OVERRIDE;
-  bool UpdateImpl() CM_OVERRIDE;
+  void CleanupImpl() override;
+  bool NoteOldRevision() override;
+  bool NoteNewRevision() override;
+  bool UpdateImpl() override;
 
   bool RunSVNCommand(std::vector<char const*> const& parameters,
                      OutputParser* out, OutputParser* err);
@@ -77,8 +77,8 @@ private:
 
   std::string LoadInfo(SVNInfo& svninfo);
   bool LoadRepositories();
-  bool LoadModifications() CM_OVERRIDE;
-  bool LoadRevisions() CM_OVERRIDE;
+  bool LoadModifications() override;
+  bool LoadRevisions() override;
   bool LoadRevisions(SVNInfo& svninfo);
 
   void GuessBase(SVNInfo& svninfo, std::vector<Change> const& changes);
@@ -86,7 +86,7 @@ private:
   void DoRevisionSVN(Revision const& revision,
                      std::vector<Change> const& changes);
 
-  void WriteXMLGlobal(cmXMLWriter& xml) CM_OVERRIDE;
+  void WriteXMLGlobal(cmXMLWriter& xml) override;
 
   class ExternalParser;
   // Parsing helper classes.
diff --git a/Source/CTest/cmCTestScriptHandler.cxx b/Source/CTest/cmCTestScriptHandler.cxx
index 1d29dfac2..fdd9622af 100644
--- a/Source/CTest/cmCTestScriptHandler.cxx
+++ b/Source/CTest/cmCTestScriptHandler.cxx
@@ -52,9 +52,9 @@ class cmCTestScriptFunctionBlocker : public cmFunctionBlocker
 {
 public:
   cmCTestScriptFunctionBlocker() {}
-  ~cmCTestScriptFunctionBlocker() CM_OVERRIDE {}
+  ~cmCTestScriptFunctionBlocker() override {}
   bool IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile& mf,
-                         cmExecutionStatus& /*status*/) CM_OVERRIDE;
+                         cmExecutionStatus& /*status*/) override;
   // virtual bool ShouldRemove(const cmListFileFunction& lff, cmMakefile &mf);
   // virtual void ScopeEnded(cmMakefile &mf);
 
@@ -75,9 +75,9 @@ cmCTestScriptHandler::cmCTestScriptHandler()
   this->Backup = false;
   this->EmptyBinDir = false;
   this->EmptyBinDirOnce = false;
-  this->Makefile = CM_NULLPTR;
-  this->CMake = CM_NULLPTR;
-  this->GlobalGenerator = CM_NULLPTR;
+  this->Makefile = nullptr;
+  this->CMake = nullptr;
+  this->GlobalGenerator = nullptr;
 
   this->ScriptStartTime = 0;
 
@@ -93,18 +93,18 @@ void cmCTestScriptHandler::Initialize()
   this->EmptyBinDir = false;
   this->EmptyBinDirOnce = false;
 
-  this->SourceDir = "";
-  this->BinaryDir = "";
-  this->BackupSourceDir = "";
-  this->BackupBinaryDir = "";
-  this->CTestRoot = "";
-  this->CVSCheckOut = "";
-  this->CTestCmd = "";
-  this->UpdateCmd = "";
-  this->CTestEnv = "";
-  this->InitialCache = "";
-  this->CMakeCmd = "";
-  this->CMOutFile = "";
+  this->SourceDir.clear();
+  this->BinaryDir.clear();
+  this->BackupSourceDir.clear();
+  this->BackupBinaryDir.clear();
+  this->CTestRoot.clear();
+  this->CVSCheckOut.clear();
+  this->CTestCmd.clear();
+  this->UpdateCmd.clear();
+  this->CTestEnv.clear();
+  this->InitialCache.clear();
+  this->CMakeCmd.clear();
+  this->CMOutFile.clear();
   this->ExtraUpdates.clear();
 
   this->MinimumInterval = 20 * 60;
@@ -114,10 +114,10 @@ void cmCTestScriptHandler::Initialize()
   this->ScriptStartTime = 0;
 
   delete this->Makefile;
-  this->Makefile = CM_NULLPTR;
+  this->Makefile = nullptr;
 
   delete this->GlobalGenerator;
-  this->GlobalGenerator = CM_NULLPTR;
+  this->GlobalGenerator = nullptr;
 
   delete this->CMake;
 }
@@ -193,7 +193,7 @@ int cmCTestScriptHandler::ExecuteScript(const std::string& total_script_arg)
   for (size_t i = 1; i < initArgs.size(); ++i) {
     argv.push_back(initArgs[i].c_str());
   }
-  argv.push_back(CM_NULLPTR);
+  argv.push_back(nullptr);
 
   // Now create process object
   cmsysProcess* cp = cmsysProcess_New();
@@ -219,7 +219,7 @@ int cmCTestScriptHandler::ExecuteScript(const std::string& total_script_arg)
   }
 
   // Properly handle output of the build command
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
   int result = cmsysProcess_GetState(cp);
   int retVal = 0;
   bool failed = false;
@@ -245,10 +245,9 @@ int cmCTestScriptHandler::ExecuteScript(const std::string& total_script_arg)
     std::ostringstream message;
     message << "Error running command: [";
     message << result << "] ";
-    for (std::vector<const char*>::iterator i = argv.begin(); i != argv.end();
-         ++i) {
-      if (*i) {
-        message << *i << " ";
+    for (const char* arg : argv) {
+      if (arg) {
+        message << arg << " ";
       }
     }
     cmCTestLog(this->CTest, ERROR_MESSAGE, message.str() << argv[0]
@@ -377,9 +376,8 @@ int cmCTestScriptHandler::ReadInScript(const std::string& total_script_arg)
   // Add definitions of variables passed in on the command line:
   const std::map<std::string, std::string>& defs =
     this->CTest->GetDefinitions();
-  for (std::map<std::string, std::string>::const_iterator it = defs.begin();
-       it != defs.end(); ++it) {
-    this->Makefile->AddDefinition(it->first, it->second.c_str());
+  for (auto const& d : defs) {
+    this->Makefile->AddDefinition(d.first, d.second.c_str());
   }
 
   // finally read in the script
@@ -394,7 +392,7 @@ int cmCTestScriptHandler::ReadInScript(const std::string& total_script_arg)
   return 0;
 }
 
-// extract variabels from the script to set ivars
+// extract variables from the script to set ivars
 int cmCTestScriptHandler::ExtractVariables()
 {
   // Temporary variables
@@ -595,7 +593,7 @@ int cmCTestScriptHandler::CheckOutSourceDir()
   if (!cmSystemTools::FileExists(this->SourceDir.c_str()) &&
       !this->CVSCheckOut.empty()) {
     // we must now checkout the src dir
-    output = "";
+    output.clear();
     cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                "Run cvs: " << this->CVSCheckOut << std::endl);
     res = cmSystemTools::RunSingleCommand(
@@ -654,15 +652,14 @@ int cmCTestScriptHandler::PerformExtraUpdates()
 
   // do an initial cvs update as required
   command = this->UpdateCmd;
-  std::vector<std::string>::iterator it;
-  for (it = this->ExtraUpdates.begin(); it != this->ExtraUpdates.end(); ++it) {
+  for (std::string const& eu : this->ExtraUpdates) {
     std::vector<std::string> cvsArgs;
-    cmSystemTools::ExpandListArgument(*it, cvsArgs);
+    cmSystemTools::ExpandListArgument(eu, cvsArgs);
     if (cvsArgs.size() == 2) {
       std::string fullCommand = command;
       fullCommand += " update ";
       fullCommand += cvsArgs[1];
-      output = "";
+      output.clear();
       retVal = 0;
       cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                  "Run Update: " << fullCommand << std::endl);
@@ -670,7 +667,7 @@ int cmCTestScriptHandler::PerformExtraUpdates()
         fullCommand.c_str(), &output, &output, &retVal, cvsArgs[0].c_str(),
         this->HandlerVerbose, 0 /*this->TimeOut*/);
       if (!res || retVal != 0) {
-        cmSystemTools::Error("Unable to perform extra updates:\n", it->c_str(),
+        cmSystemTools::Error("Unable to perform extra updates:\n", eu.c_str(),
                              "\nWith output:\n", output.c_str());
         return 0;
       }
@@ -765,7 +762,7 @@ int cmCTestScriptHandler::RunConfigurationDashboard()
     command = this->CMakeCmd;
     command += " \"";
     command += this->SourceDir;
-    output = "";
+    output.clear();
     command += "\"";
     retVal = 0;
     cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
@@ -803,9 +800,9 @@ int cmCTestScriptHandler::RunConfigurationDashboard()
   std::vector<std::string> ctestCommands;
   cmSystemTools::ExpandListArgument(this->CTestCmd, ctestCommands);
   // for each variable/argument do a putenv
-  for (unsigned i = 0; i < ctestCommands.size(); ++i) {
-    command = ctestCommands[i];
-    output = "";
+  for (std::string const& ctestCommand : ctestCommands) {
+    command = ctestCommand;
+    output.clear();
     retVal = 0;
     cmCTestLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                "Run ctest command: " << command << std::endl);
@@ -852,7 +849,7 @@ bool cmCTestScriptHandler::WriteInitialCache(const char* directory,
     return false;
   }
 
-  if (text != CM_NULLPTR) {
+  if (text != nullptr) {
     fout.write(text, strlen(text));
   }
 
diff --git a/Source/CTest/cmCTestScriptHandler.h b/Source/CTest/cmCTestScriptHandler.h
index 667870260..b6cd97b73 100644
--- a/Source/CTest/cmCTestScriptHandler.h
+++ b/Source/CTest/cmCTestScriptHandler.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestScriptHandler_h
 #define cmCTestScriptHandler_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestGenericHandler.h"
 
@@ -65,7 +65,7 @@ public:
   /**
    * Run a dashboard using a specified confiuration script
    */
-  int ProcessHandler() CM_OVERRIDE;
+  int ProcessHandler() override;
 
   /*
    * Run a script
@@ -98,9 +98,9 @@ public:
   double GetRemainingTimeAllowed();
 
   cmCTestScriptHandler();
-  ~cmCTestScriptHandler() CM_OVERRIDE;
+  ~cmCTestScriptHandler() override;
 
-  void Initialize() CM_OVERRIDE;
+  void Initialize() override;
 
   void CreateCMake();
   cmake* GetCMake() { return this->CMake; }
diff --git a/Source/CTest/cmCTestSleepCommand.h b/Source/CTest/cmCTestSleepCommand.h
index f0b5f1eeb..5cd185a81 100644
--- a/Source/CTest/cmCTestSleepCommand.h
+++ b/Source/CTest/cmCTestSleepCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestSleepCommand_h
 #define cmCTestSleepCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestCommand.h"
 
@@ -27,7 +27,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestSleepCommand* ni = new cmCTestSleepCommand;
     ni->CTest = this->CTest;
@@ -40,7 +40,7 @@ public:
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/CTest/cmCTestStartCommand.cxx b/Source/CTest/cmCTestStartCommand.cxx
index 01a874b45..4f0d87b1b 100644
--- a/Source/CTest/cmCTestStartCommand.cxx
+++ b/Source/CTest/cmCTestStartCommand.cxx
@@ -29,12 +29,12 @@ bool cmCTestStartCommand::InitialPass(std::vector<std::string> const& args,
 
   size_t cnt = 0;
   const char* smodel = args[cnt].c_str();
-  const char* src_dir = CM_NULLPTR;
-  const char* bld_dir = CM_NULLPTR;
+  const char* src_dir = nullptr;
+  const char* bld_dir = nullptr;
 
   cnt++;
 
-  this->CTest->SetSpecificTrack(CM_NULLPTR);
+  this->CTest->SetSpecificTrack(nullptr);
   if (cnt < args.size() - 1) {
     if (args[cnt] == "TRACK") {
       cnt++;
diff --git a/Source/CTest/cmCTestStartCommand.h b/Source/CTest/cmCTestStartCommand.h
index b4943f92d..542f27c13 100644
--- a/Source/CTest/cmCTestStartCommand.h
+++ b/Source/CTest/cmCTestStartCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestStartCommand_h
 #define cmCTestStartCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestCommand.h"
 
@@ -27,7 +27,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestStartCommand* ni = new cmCTestStartCommand;
     ni->CTest = this->CTest;
@@ -42,7 +42,7 @@ public:
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   /**
    * Will this invocation of ctest_start create a new TAG file?
diff --git a/Source/CTest/cmCTestSubmitCommand.cxx b/Source/CTest/cmCTestSubmitCommand.cxx
index 409eb51fc..1794ca64b 100644
--- a/Source/CTest/cmCTestSubmitCommand.cxx
+++ b/Source/CTest/cmCTestSubmitCommand.cxx
@@ -86,7 +86,7 @@ cmCTestGenericHandler* cmCTestSubmitCommand::InitializeHandler()
                          extraFiles.end());
     if (!this->CTest->SubmitExtraFiles(newExtraFiles)) {
       this->SetError("problem submitting extra files.");
-      return CM_NULLPTR;
+      return nullptr;
     }
   }
 
@@ -94,7 +94,7 @@ cmCTestGenericHandler* cmCTestSubmitCommand::InitializeHandler()
     this->CTest->GetInitializedHandler("submit");
   if (!handler) {
     this->SetError("internal CTest error. Cannot instantiate submit handler");
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // If no FILES or PARTS given, *all* PARTS are submitted by default.
diff --git a/Source/CTest/cmCTestSubmitCommand.h b/Source/CTest/cmCTestSubmitCommand.h
index cf65cdc8d..c4b84ce9f 100644
--- a/Source/CTest/cmCTestSubmitCommand.h
+++ b/Source/CTest/cmCTestSubmitCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestSubmitCommand_h
 #define cmCTestSubmitCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTest.h"
 #include "cmCTestHandlerCommand.h"
@@ -38,7 +38,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestSubmitCommand* ni = new cmCTestSubmitCommand;
     ni->CTest = this->CTest;
@@ -47,20 +47,20 @@ public:
   }
 
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   /**
    * The name of the command as specified in CMakeList.txt.
    */
-  std::string GetName() const CM_OVERRIDE { return "ctest_submit"; }
+  std::string GetName() const override { return "ctest_submit"; }
 
   typedef cmCTestHandlerCommand Superclass;
 
 protected:
-  cmCTestGenericHandler* InitializeHandler() CM_OVERRIDE;
+  cmCTestGenericHandler* InitializeHandler() override;
 
-  bool CheckArgumentKeyword(std::string const& arg) CM_OVERRIDE;
-  bool CheckArgumentValue(std::string const& arg) CM_OVERRIDE;
+  bool CheckArgumentKeyword(std::string const& arg) override;
+  bool CheckArgumentValue(std::string const& arg) override;
 
   enum
   {
diff --git a/Source/CTest/cmCTestSubmitHandler.cxx b/Source/CTest/cmCTestSubmitHandler.cxx
index 8d62fa156..e51e16843 100644
--- a/Source/CTest/cmCTestSubmitHandler.cxx
+++ b/Source/CTest/cmCTestSubmitHandler.cxx
@@ -13,6 +13,7 @@
 #include "cmCTest.h"
 #include "cmCTestCurl.h"
 #include "cmCTestScriptHandler.h"
+#include "cmCryptoHash.h"
 #include "cmCurl.h"
 #include "cmGeneratedFileStream.h"
 #include "cmProcessOutput.h"
@@ -37,7 +38,7 @@ class cmCTestSubmitHandler::ResponseParser : public cmXMLParser
 {
 public:
   ResponseParser() { this->Status = STATUS_OK; }
-  ~ResponseParser() CM_OVERRIDE {}
+  ~ResponseParser() override {}
 
 public:
   enum StatusType
@@ -65,17 +66,17 @@ private:
   }
 
   void StartElement(const std::string& /*name*/,
-                    const char** /*atts*/) CM_OVERRIDE
+                    const char** /*atts*/) override
   {
     this->CurrentValue.clear();
   }
 
-  void CharacterDataHandler(const char* data, int length) CM_OVERRIDE
+  void CharacterDataHandler(const char* data, int length) override
   {
     this->CurrentValue.insert(this->CurrentValue.end(), data, data + length);
   }
 
-  void EndElement(const std::string& name) CM_OVERRIDE
+  void EndElement(const std::string& name) override
   {
     if (name == "status") {
       std::string status = cmSystemTools::UpperCase(this->GetCurrentValue());
@@ -99,7 +100,7 @@ private:
 static size_t cmCTestSubmitHandlerWriteMemoryCallback(void* ptr, size_t size,
                                                       size_t nmemb, void* data)
 {
-  int realsize = (int)(size * nmemb);
+  int realsize = static_cast<int>(size * nmemb);
 
   cmCTestSubmitHandlerVectorOfChar* vec =
     static_cast<cmCTestSubmitHandlerVectorOfChar*>(data);
@@ -139,12 +140,12 @@ void cmCTestSubmitHandler::Initialize()
   this->HasWarnings = false;
   this->HasErrors = false;
   this->Superclass::Initialize();
-  this->HTTPProxy = "";
+  this->HTTPProxy.clear();
   this->HTTPProxyType = 0;
-  this->HTTPProxyAuth = "";
-  this->FTPProxy = "";
+  this->HTTPProxyAuth.clear();
+  this->FTPProxy.clear();
   this->FTPProxyType = 0;
-  this->LogFile = CM_NULLPTR;
+  this->LogFile = nullptr;
   this->Files.clear();
 }
 
@@ -161,8 +162,7 @@ bool cmCTestSubmitHandler::SubmitUsingFTP(const std::string& localprefix,
   /* In windows, this will init the winsock stuff */
   ::curl_global_init(CURL_GLOBAL_ALL);
 
-  cmCTest::SetOfStrings::const_iterator file;
-  for (file = files.begin(); file != files.end(); ++file) {
+  for (std::string const& file : files) {
     /* get a curl handle */
     curl = curl_easy_init();
     if (curl) {
@@ -191,12 +191,12 @@ bool cmCTestSubmitHandler::SubmitUsingFTP(const std::string& localprefix,
 
       ::curl_easy_setopt(curl, CURLOPT_UPLOAD, 1);
 
-      std::string local_file = *file;
+      std::string local_file = file;
       if (!cmSystemTools::FileExists(local_file.c_str())) {
-        local_file = localprefix + "/" + *file;
+        local_file = localprefix + "/" + file;
       }
       std::string upload_as =
-        url + "/" + remoteprefix + cmSystemTools::GetFilenameName(*file);
+        url + "/" + remoteprefix + cmSystemTools::GetFilenameName(file);
 
       if (!cmSystemTools::FileExists(local_file.c_str())) {
         cmCTestLog(this->CTest, ERROR_MESSAGE,
@@ -238,8 +238,8 @@ bool cmCTestSubmitHandler::SubmitUsingFTP(const std::string& localprefix,
       /* we pass our 'chunk' struct to the callback function */
       cmCTestSubmitHandlerVectorOfChar chunk;
       cmCTestSubmitHandlerVectorOfChar chunkDebug;
-      ::curl_easy_setopt(curl, CURLOPT_FILE, (void*)&chunk);
-      ::curl_easy_setopt(curl, CURLOPT_DEBUGDATA, (void*)&chunkDebug);
+      ::curl_easy_setopt(curl, CURLOPT_FILE, &chunk);
+      ::curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &chunkDebug);
 
       // Now run off and do what you've been told!
       res = ::curl_easy_perform(curl);
@@ -303,15 +303,14 @@ bool cmCTestSubmitHandler::SubmitUsingHTTP(const std::string& localprefix,
   char error_buffer[1024];
   // Set Content-Type to satisfy fussy modsecurity rules.
   struct curl_slist* headers =
-    ::curl_slist_append(CM_NULLPTR, "Content-Type: text/xml");
+    ::curl_slist_append(nullptr, "Content-Type: text/xml");
 
   // Add any additional headers that the user specified.
-  for (std::vector<std::string>::const_iterator h = this->HttpHeaders.begin();
-       h != this->HttpHeaders.end(); ++h) {
+  for (std::string const& h : this->HttpHeaders) {
     cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT,
-                       "   Add HTTP Header: \"" << *h << "\"" << std::endl,
+                       "   Add HTTP Header: \"" << h << "\"" << std::endl,
                        this->Quiet);
-    headers = ::curl_slist_append(headers, h->c_str());
+    headers = ::curl_slist_append(headers, h.c_str());
   }
 
   /* In windows, this will init the winsock stuff */
@@ -322,18 +321,15 @@ bool cmCTestSubmitHandler::SubmitUsingHTTP(const std::string& localprefix,
   cmSystemTools::ExpandListArgument(curlopt, args);
   bool verifyPeerOff = false;
   bool verifyHostOff = false;
-  for (std::vector<std::string>::iterator i = args.begin(); i != args.end();
-       ++i) {
-    if (*i == "CURLOPT_SSL_VERIFYPEER_OFF") {
+  for (std::string const& arg : args) {
+    if (arg == "CURLOPT_SSL_VERIFYPEER_OFF") {
       verifyPeerOff = true;
     }
-    if (*i == "CURLOPT_SSL_VERIFYHOST_OFF") {
+    if (arg == "CURLOPT_SSL_VERIFYHOST_OFF") {
       verifyHostOff = true;
     }
   }
-  std::string::size_type kk;
-  cmCTest::SetOfStrings::const_iterator file;
-  for (file = files.begin(); file != files.end(); ++file) {
+  for (std::string const& file : files) {
     /* get a curl handle */
     curl = curl_easy_init();
     if (curl) {
@@ -388,19 +384,18 @@ bool cmCTestSubmitHandler::SubmitUsingHTTP(const std::string& localprefix,
 
       ::curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
 
-      std::string local_file = *file;
+      std::string local_file = file;
       if (!cmSystemTools::FileExists(local_file.c_str())) {
-        local_file = localprefix + "/" + *file;
+        local_file = localprefix + "/" + file;
       }
       std::string remote_file =
-        remoteprefix + cmSystemTools::GetFilenameName(*file);
+        remoteprefix + cmSystemTools::GetFilenameName(file);
 
       *this->LogFile << "\tUpload file: " << local_file << " to "
                      << remote_file << std::endl;
 
       std::string ofile;
-      for (kk = 0; kk < remote_file.size(); kk++) {
-        char c = remote_file[kk];
+      for (char c : remote_file) {
         char hexCh[4] = { 0, 0, 0, 0 };
         hexCh[0] = c;
         switch (c) {
@@ -412,7 +407,7 @@ bool cmCTestSubmitHandler::SubmitUsingHTTP(const std::string& localprefix,
           case ' ':
           case '=':
           case '%':
-            sprintf(hexCh, "%%%02X", (int)c);
+            sprintf(hexCh, "%%%02X", static_cast<int>(c));
             ofile.append(hexCh);
             break;
           default:
@@ -428,10 +423,8 @@ bool cmCTestSubmitHandler::SubmitUsingHTTP(const std::string& localprefix,
       if (cmSystemTools::IsOn(this->GetOption("InternalTest"))) {
         upload_as += "bad_md5sum";
       } else {
-        char md5[33];
-        cmSystemTools::ComputeFileMD5(local_file, md5);
-        md5[32] = 0;
-        upload_as += md5;
+        upload_as +=
+          cmSystemTools::ComputeFileHash(local_file, cmCryptoHash::AlgoMD5);
       }
 
       if (!cmSystemTools::FileExists(local_file.c_str())) {
@@ -472,8 +465,8 @@ bool cmCTestSubmitHandler::SubmitUsingHTTP(const std::string& localprefix,
       /* we pass our 'chunk' struct to the callback function */
       cmCTestSubmitHandlerVectorOfChar chunk;
       cmCTestSubmitHandlerVectorOfChar chunkDebug;
-      ::curl_easy_setopt(curl, CURLOPT_FILE, (void*)&chunk);
-      ::curl_easy_setopt(curl, CURLOPT_DEBUGDATA, (void*)&chunkDebug);
+      ::curl_easy_setopt(curl, CURLOPT_FILE, &chunk);
+      ::curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &chunkDebug);
 
       // Now run off and do what you've been told!
       res = ::curl_easy_perform(curl);
@@ -496,18 +489,18 @@ bool cmCTestSubmitHandler::SubmitUsingHTTP(const std::string& localprefix,
       // If curl failed for any reason, or checksum fails, wait and retry
       //
       if (res != CURLE_OK || this->HasErrors) {
-        std::string retryDelay = this->GetOption("RetryDelay") == CM_NULLPTR
+        std::string retryDelay = this->GetOption("RetryDelay") == nullptr
           ? ""
           : this->GetOption("RetryDelay");
-        std::string retryCount = this->GetOption("RetryCount") == CM_NULLPTR
+        std::string retryCount = this->GetOption("RetryCount") == nullptr
           ? ""
           : this->GetOption("RetryCount");
 
-        int delay = retryDelay == ""
+        int delay = retryDelay.empty()
           ? atoi(this->CTest->GetCTestConfiguration("CTestSubmitRetryDelay")
                    .c_str())
           : atoi(retryDelay.c_str());
-        int count = retryCount == ""
+        int count = retryCount.empty()
           ? atoi(this->CTest->GetCTestConfiguration("CTestSubmitRetryCount")
                    .c_str())
           : atoi(retryCount.c_str());
@@ -630,8 +623,7 @@ bool cmCTestSubmitHandler::TriggerUsingHTTP(const std::set<std::string>& files,
   /* In windows, this will init the winsock stuff */
   ::curl_global_init(CURL_GLOBAL_ALL);
 
-  cmCTest::SetOfStrings::const_iterator file;
-  for (file = files.begin(); file != files.end(); ++file) {
+  for (std::string const& file : files) {
     /* get a curl handle */
     curl = curl_easy_init();
     if (curl) {
@@ -668,14 +660,12 @@ bool cmCTestSubmitHandler::TriggerUsingHTTP(const std::set<std::string>& files,
       /* we pass our 'chunk' struct to the callback function */
       cmCTestSubmitHandlerVectorOfChar chunk;
       cmCTestSubmitHandlerVectorOfChar chunkDebug;
-      ::curl_easy_setopt(curl, CURLOPT_FILE, (void*)&chunk);
-      ::curl_easy_setopt(curl, CURLOPT_DEBUGDATA, (void*)&chunkDebug);
+      ::curl_easy_setopt(curl, CURLOPT_FILE, &chunk);
+      ::curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &chunkDebug);
 
-      std::string rfile = remoteprefix + cmSystemTools::GetFilenameName(*file);
+      std::string rfile = remoteprefix + cmSystemTools::GetFilenameName(file);
       std::string ofile;
-      std::string::iterator kk;
-      for (kk = rfile.begin(); kk < rfile.end(); ++kk) {
-        char c = *kk;
+      for (char c : rfile) {
         char hexCh[4] = { 0, 0, 0, 0 };
         hexCh[0] = c;
         switch (c) {
@@ -687,7 +677,7 @@ bool cmCTestSubmitHandler::TriggerUsingHTTP(const std::set<std::string>& files,
           case ' ':
           case '=':
           case '%':
-            sprintf(hexCh, "%%%02X", (int)c);
+            sprintf(hexCh, "%%%02X", static_cast<int>(c));
             ofile.append(hexCh);
             break;
           default:
@@ -765,7 +755,7 @@ bool cmCTestSubmitHandler::SubmitUsingSCP(const std::string& scp_command,
   argv.push_back(scp_command.c_str()); // Scp command
   argv.push_back(scp_command.c_str()); // Dummy string for file
   argv.push_back(scp_command.c_str()); // Dummy string for remote url
-  argv.push_back(CM_NULLPTR);
+  argv.push_back(nullptr);
 
   cmsysProcess* cp = cmsysProcess_New();
   cmsysProcess_SetOption(cp, cmsysProcess_Option_HideWindow, 1);
@@ -773,16 +763,15 @@ bool cmCTestSubmitHandler::SubmitUsingSCP(const std::string& scp_command,
 
   int problems = 0;
 
-  cmCTest::SetOfStrings::const_iterator file;
-  for (file = files.begin(); file != files.end(); ++file) {
+  for (std::string const& file : files) {
     int retVal;
 
     std::string lfname = localprefix;
     cmSystemTools::ConvertToUnixSlashes(lfname);
-    lfname += "/" + *file;
+    lfname += "/" + file;
     lfname = cmSystemTools::ConvertToOutputPath(lfname.c_str());
     argv[1] = lfname.c_str();
-    std::string rfname = url + "/" + remoteprefix + *file;
+    std::string rfname = url + "/" + remoteprefix + file;
     argv[2] = rfname.c_str();
     cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT, "Execute \""
                          << argv[0] << "\" \"" << argv[1] << "\" \"" << argv[2]
@@ -798,7 +787,7 @@ bool cmCTestSubmitHandler::SubmitUsingSCP(const std::string& scp_command,
     cmProcessOutput processOutput;
     std::string strdata;
 
-    while (cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR)) {
+    while (cmsysProcess_WaitForData(cp, &data, &length, nullptr)) {
       processOutput.DecodeText(data, length, strdata);
       cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                          cmCTestLogWrite(strdata.c_str(), strdata.size()),
@@ -811,7 +800,7 @@ bool cmCTestSubmitHandler::SubmitUsingSCP(const std::string& scp_command,
                          this->Quiet);
     }
 
-    cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+    cmsysProcess_WaitForExit(cp, nullptr);
 
     int result = cmsysProcess_GetState(cp);
 
@@ -865,12 +854,11 @@ bool cmCTestSubmitHandler::SubmitUsingCP(const std::string& localprefix,
     return false;
   }
 
-  cmCTest::SetOfStrings::const_iterator file;
-  for (file = files.begin(); file != files.end(); ++file) {
+  for (std::string const& file : files) {
     std::string lfname = localprefix;
     cmSystemTools::ConvertToUnixSlashes(lfname);
-    lfname += "/" + *file;
-    std::string rfname = destination + "/" + remoteprefix + *file;
+    lfname += "/" + file;
+    std::string rfname = destination + "/" + remoteprefix + file;
     cmSystemTools::CopyFileAlways(lfname, rfname);
     cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT, "   Copy file: "
                          << lfname << " to " << rfname << std::endl,
@@ -903,13 +891,12 @@ bool cmCTestSubmitHandler::SubmitUsingXMLRPC(
   cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT, "   Submitting to: "
                        << realURL << " (" << remoteprefix << ")" << std::endl,
                      this->Quiet);
-  cmCTest::SetOfStrings::const_iterator file;
-  for (file = files.begin(); file != files.end(); ++file) {
+  for (std::string const& file : files) {
     xmlrpc_value* result;
 
-    std::string local_file = *file;
+    std::string local_file = file;
     if (!cmSystemTools::FileExists(local_file.c_str())) {
-      local_file = localprefix + "/" + *file;
+      local_file = localprefix + "/" + file;
     }
     cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT,
                        "   Submit file: " << local_file << std::endl,
@@ -949,8 +936,9 @@ bool cmCTestSubmitHandler::SubmitUsingXMLRPC(
 
     char remoteCommand[] = "Submit.put";
     char* pRealURL = const_cast<char*>(realURL.c_str());
-    result = xmlrpc_client_call(&env, pRealURL, remoteCommand, "(6)",
-                                fileBuffer, (xmlrpc_int32)fileSize);
+    result =
+      xmlrpc_client_call(&env, pRealURL, remoteCommand, "(6)", fileBuffer,
+                         static_cast<xmlrpc_int32>(fileSize));
 
     delete[] fileBuffer;
 
@@ -1037,30 +1025,29 @@ int cmCTestSubmitHandler::HandleCDashUploadFile(std::string const& file,
   bool internalTest = cmSystemTools::IsOn(this->GetOption("InternalTest"));
 
   // Get RETRY_COUNT and RETRY_DELAY values if they were set.
-  std::string retryDelayString = this->GetOption("RetryDelay") == CM_NULLPTR
+  std::string retryDelayString = this->GetOption("RetryDelay") == nullptr
     ? ""
     : this->GetOption("RetryDelay");
-  std::string retryCountString = this->GetOption("RetryCount") == CM_NULLPTR
+  std::string retryCountString = this->GetOption("RetryCount") == nullptr
     ? ""
     : this->GetOption("RetryCount");
   unsigned long retryDelay = 0;
-  if (retryDelayString != "") {
+  if (!retryDelayString.empty()) {
     if (!cmSystemTools::StringToULong(retryDelayString.c_str(), &retryDelay)) {
       cmCTestLog(this->CTest, WARNING, "Invalid value for 'RETRY_DELAY' : "
                    << retryDelayString << std::endl);
     }
   }
   unsigned long retryCount = 0;
-  if (retryCountString != "") {
+  if (!retryCountString.empty()) {
     if (!cmSystemTools::StringToULong(retryCountString.c_str(), &retryCount)) {
       cmCTestLog(this->CTest, WARNING, "Invalid value for 'RETRY_DELAY' : "
                    << retryCountString << std::endl);
     }
   }
 
-  char md5sum[33];
-  md5sum[32] = 0;
-  cmSystemTools::ComputeFileMD5(file, md5sum);
+  std::string md5sum =
+    cmSystemTools::ComputeFileHash(file, cmCryptoHash::AlgoMD5);
   // 1. request the buildid and check to see if the file
   //    has already been uploaded
   // TODO I added support for subproject. You would need to add
@@ -1084,8 +1071,8 @@ int cmCTestSubmitHandler::HandleCDashUploadFile(std::string const& file,
       << "site=" << curl.Escape(this->CTest->GetCTestConfiguration("Site"))
       << "&"
       << "track=" << curl.Escape(this->CTest->GetTestModelString()) << "&"
-      << "starttime=" << (int)cmSystemTools::GetTime() << "&"
-      << "endtime=" << (int)cmSystemTools::GetTime() << "&"
+      << "starttime=" << static_cast<int>(cmSystemTools::GetTime()) << "&"
+      << "endtime=" << static_cast<int>(cmSystemTools::GetTime()) << "&"
       << "datafilesmd5[0]=" << md5sum << "&"
       << "type=" << curl.Escape(typeString);
   std::string fields = str.str();
@@ -1324,13 +1311,11 @@ int cmCTestSubmitHandler::ProcessHandler()
     cmCTestOptionalLog(this->CTest, DEBUG,
                        "Globbing for: " << gpath << std::endl, this->Quiet);
     if (cmSystemTools::SimpleGlob(gpath, gfiles, 1)) {
-      size_t cc;
-      for (cc = 0; cc < gfiles.size(); cc++) {
-        gfiles[cc] = gfiles[cc].substr(glen);
+      for (std::string& gfile : gfiles) {
+        gfile = gfile.substr(glen);
         cmCTestOptionalLog(this->CTest, DEBUG,
-                           "Glob file: " << gfiles[cc] << std::endl,
-                           this->Quiet);
-        this->CTest->AddSubmitFile(cmCTest::PartCoverage, gfiles[cc].c_str());
+                           "Glob file: " << gfile << std::endl, this->Quiet);
+        this->CTest->AddSubmitFile(cmCTest::PartCoverage, gfile.c_str());
       }
     } else {
       cmCTestLog(this->CTest, ERROR_MESSAGE, "Problem globbing" << std::endl);
@@ -1357,9 +1342,8 @@ int cmCTestSubmitHandler::ProcessHandler()
   if (ofs) {
     ofs << "Upload files:" << std::endl;
     int cnt = 0;
-    cmCTest::SetOfStrings::iterator it;
-    for (it = files.begin(); it != files.end(); ++it) {
-      ofs << cnt << "\t" << *it << std::endl;
+    for (std::string const& file : files) {
+      ofs << cnt << "\t" << file << std::endl;
       cnt++;
     }
   }
@@ -1377,7 +1361,7 @@ int cmCTestSubmitHandler::ProcessHandler()
 
   std::string dropMethod(this->CTest->GetCTestConfiguration("DropMethod"));
 
-  if (dropMethod == "" || dropMethod == "ftp") {
+  if (dropMethod.empty() || dropMethod == "ftp") {
     ofs << "Using drop method: FTP" << std::endl;
     cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT,
                        "   Using FTP submit method" << std::endl
diff --git a/Source/CTest/cmCTestSubmitHandler.h b/Source/CTest/cmCTestSubmitHandler.h
index 2923f4f3d..b4d0e7772 100644
--- a/Source/CTest/cmCTestSubmitHandler.h
+++ b/Source/CTest/cmCTestSubmitHandler.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestSubmitHandler_h
 #define cmCTestSubmitHandler_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTest.h"
 #include "cmCTestGenericHandler.h"
@@ -25,14 +25,14 @@ public:
   typedef cmCTestGenericHandler Superclass;
 
   cmCTestSubmitHandler();
-  ~cmCTestSubmitHandler() CM_OVERRIDE { this->LogFile = CM_NULLPTR; }
+  ~cmCTestSubmitHandler() override { this->LogFile = nullptr; }
 
   /*
    * The main entry point for this class
    */
-  int ProcessHandler() CM_OVERRIDE;
+  int ProcessHandler() override;
 
-  void Initialize() CM_OVERRIDE;
+  void Initialize() override;
 
   /** Specify a set of parts (by name) to submit.  */
   void SelectParts(std::set<cmCTest::Part> const& parts);
diff --git a/Source/CTest/cmCTestTestCommand.cxx b/Source/CTest/cmCTestTestCommand.cxx
index 075b1403a..febd39e76 100644
--- a/Source/CTest/cmCTestTestCommand.cxx
+++ b/Source/CTest/cmCTestTestCommand.cxx
@@ -27,7 +27,7 @@ cmCTestTestCommand::cmCTestTestCommand()
   this->Arguments[ctt_SCHEDULE_RANDOM] = "SCHEDULE_RANDOM";
   this->Arguments[ctt_STOP_TIME] = "STOP_TIME";
   this->Arguments[ctt_TEST_LOAD] = "TEST_LOAD";
-  this->Arguments[ctt_LAST] = CM_NULLPTR;
+  this->Arguments[ctt_LAST] = nullptr;
   this->Last = ctt_LAST;
 }
 
@@ -124,6 +124,12 @@ cmCTestGenericHandler* cmCTestTestCommand::InitializeHandler()
   }
   handler->SetTestLoad(testLoad);
 
+  if (const char* labelsForSubprojects =
+        this->Makefile->GetDefinition("CTEST_LABELS_FOR_SUBPROJECTS")) {
+    this->CTest->SetCTestConfiguration("LabelsForSubprojects",
+                                       labelsForSubprojects, this->Quiet);
+  }
+
   handler->SetQuiet(this->Quiet);
   return handler;
 }
diff --git a/Source/CTest/cmCTestTestCommand.h b/Source/CTest/cmCTestTestCommand.h
index be7e7831f..11c0db955 100644
--- a/Source/CTest/cmCTestTestCommand.h
+++ b/Source/CTest/cmCTestTestCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestTestCommand_h
 #define cmCTestTestCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestHandlerCommand.h"
 
@@ -25,7 +25,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestTestCommand* ni = new cmCTestTestCommand;
     ni->CTest = this->CTest;
@@ -36,11 +36,11 @@ public:
   /**
    * The name of the command as specified in CMakeList.txt.
    */
-  std::string GetName() const CM_OVERRIDE { return "ctest_test"; }
+  std::string GetName() const override { return "ctest_test"; }
 
 protected:
   virtual cmCTestGenericHandler* InitializeActualHandler();
-  cmCTestGenericHandler* InitializeHandler() CM_OVERRIDE;
+  cmCTestGenericHandler* InitializeHandler() override;
 
   enum
   {
diff --git a/Source/CTest/cmCTestTestHandler.cxx b/Source/CTest/cmCTestTestHandler.cxx
index 674be6052..c7ed92725 100644
--- a/Source/CTest/cmCTestTestHandler.cxx
+++ b/Source/CTest/cmCTestTestHandler.cxx
@@ -1,15 +1,14 @@
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCTestTestHandler.h"
-
-#include "cmsys/Base64.h"
-#include "cmsys/Directory.hxx"
-#include "cmsys/FStream.hxx"
-#include "cmsys/RegularExpression.hxx"
 #include <algorithm>
+#include <cmsys/Base64.h>
+#include <cmsys/Directory.hxx>
+#include <cmsys/RegularExpression.hxx>
 #include <functional>
 #include <iomanip>
 #include <iterator>
+#include <memory> // IWYU pragma: keep
 #include <set>
 #include <sstream>
 #include <stdio.h>
@@ -30,9 +29,9 @@
 #include "cmSystemTools.h"
 #include "cmWorkingDirectory.h"
 #include "cmXMLWriter.h"
-#include "cm_auto_ptr.hxx"
 #include "cm_utf8.h"
 #include "cmake.h"
+#include "cmsys/FStream.hxx"
 
 class cmExecutionStatus;
 
@@ -42,7 +41,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestSubdirCommand* c = new cmCTestSubdirCommand;
     c->TestHandler = this->TestHandler;
@@ -54,7 +53,7 @@ public:
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& /*unused*/) CM_OVERRIDE;
+                   cmExecutionStatus& /*unused*/) override;
 
   cmCTestTestHandler* TestHandler;
 };
@@ -66,17 +65,16 @@ bool cmCTestSubdirCommand::InitialPass(std::vector<std::string> const& args,
     this->SetError("called with incorrect number of arguments");
     return false;
   }
-  std::vector<std::string>::const_iterator it;
   std::string cwd = cmSystemTools::GetCurrentWorkingDirectory();
-  for (it = args.begin(); it != args.end(); ++it) {
+  for (std::string const& arg : args) {
     std::string fname;
 
-    if (cmSystemTools::FileIsFullPath(it->c_str())) {
-      fname = *it;
+    if (cmSystemTools::FileIsFullPath(arg.c_str())) {
+      fname = arg;
     } else {
       fname = cwd;
       fname += "/";
-      fname += *it;
+      fname += arg;
     }
 
     if (!cmSystemTools::FileIsDirectory(fname)) {
@@ -117,7 +115,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestAddSubdirectoryCommand* c = new cmCTestAddSubdirectoryCommand;
     c->TestHandler = this->TestHandler;
@@ -129,7 +127,7 @@ public:
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& /*unused*/) CM_OVERRIDE;
+                   cmExecutionStatus& /*unused*/) override;
 
   cmCTestTestHandler* TestHandler;
 };
@@ -182,7 +180,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestAddTestCommand* c = new cmCTestAddTestCommand;
     c->TestHandler = this->TestHandler;
@@ -194,7 +192,7 @@ public:
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& /*args*/,
-                   cmExecutionStatus& /*unused*/) CM_OVERRIDE;
+                   cmExecutionStatus& /*unused*/) override;
 
   cmCTestTestHandler* TestHandler;
 };
@@ -215,7 +213,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestSetTestsPropertiesCommand* c = new cmCTestSetTestsPropertiesCommand;
     c->TestHandler = this->TestHandler;
@@ -227,7 +225,7 @@ public:
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& /*args*/,
-                   cmExecutionStatus& /*unused*/) CM_OVERRIDE;
+                   cmExecutionStatus& /*unused*/) override;
 
   cmCTestTestHandler* TestHandler;
 };
@@ -238,6 +236,36 @@ bool cmCTestSetTestsPropertiesCommand::InitialPass(
   return this->TestHandler->SetTestsProperties(args);
 }
 
+class cmCTestSetDirectoryPropertiesCommand : public cmCommand
+{
+public:
+  /**
+   * This is a virtual constructor for the command.
+   */
+  cmCommand* Clone() override
+  {
+    cmCTestSetDirectoryPropertiesCommand* c =
+      new cmCTestSetDirectoryPropertiesCommand;
+    c->TestHandler = this->TestHandler;
+    return c;
+  }
+
+  /**
+   * This is called when the command is first encountered in
+   * the CMakeLists.txt file.
+  */
+  bool InitialPass(std::vector<std::string> const& /*unused*/,
+                   cmExecutionStatus& /*unused*/) override;
+
+  cmCTestTestHandler* TestHandler;
+};
+
+bool cmCTestSetDirectoryPropertiesCommand::InitialPass(
+  std::vector<std::string> const& args, cmExecutionStatus&)
+{
+  return this->TestHandler->SetDirectoryProperties(args);
+}
+
 // get the next number in a string with numbers separated by ,
 // pos is the start of the search and pos2 is the end of the search
 // pos becomes pos2 after a call to GetNextNumber.
@@ -305,7 +333,7 @@ cmCTestTestHandler::cmCTestTestHandler()
 
   this->MemCheck = false;
 
-  this->LogFile = CM_NULLPTR;
+  this->LogFile = nullptr;
 
   // regex to detect <DartMeasurement>...</DartMeasurement>
   this->DartStuff.compile("(<DartMeasurement.*/DartMeasurement[a-zA-Z]*>)");
@@ -323,8 +351,8 @@ void cmCTestTestHandler::Initialize()
   this->TestResults.clear();
 
   this->CustomTestsIgnore.clear();
-  this->StartTest = "";
-  this->EndTest = "";
+  this->StartTest.clear();
+  this->EndTest.clear();
 
   this->CustomPreTest.clear();
   this->CustomPostTest.clear();
@@ -340,13 +368,13 @@ void cmCTestTestHandler::Initialize()
   this->UseExcludeRegExpFirst = false;
   this->IncludeLabelRegularExpression = "";
   this->ExcludeLabelRegularExpression = "";
-  this->IncludeRegExp = "";
-  this->ExcludeRegExp = "";
+  this->IncludeRegExp.clear();
+  this->ExcludeRegExp.clear();
   this->ExcludeFixtureRegExp.clear();
   this->ExcludeFixtureSetupRegExp.clear();
   this->ExcludeFixtureCleanupRegExp.clear();
 
-  TestsToRunString = "";
+  TestsToRunString.clear();
   this->UseUnion = false;
   this->TestList.clear();
 }
@@ -476,10 +504,9 @@ int cmCTestTestHandler::ProcessHandler()
       cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT, std::endl
                            << "The following tests passed:" << std::endl,
                          this->Quiet);
-      for (std::vector<std::string>::iterator j = passed.begin();
-           j != passed.end(); ++j) {
+      for (std::string const& j : passed) {
         cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
-                           "\t" << *j << std::endl, this->Quiet);
+                           "\t" << j << std::endl, this->Quiet);
       }
     }
 
@@ -489,11 +516,10 @@ int cmCTestTestHandler::ProcessHandler()
     SetOfTests resultsSet(this->TestResults.begin(), this->TestResults.end());
     std::vector<cmCTestTestHandler::cmCTestTestResult> disabledTests;
 
-    for (SetOfTests::iterator ftit = resultsSet.begin();
-         ftit != resultsSet.end(); ++ftit) {
-      if (cmHasLiteralPrefix(ftit->CompletionStatus, "SKIP_RETURN_CODE=") ||
-          ftit->CompletionStatus == "Disabled") {
-        disabledTests.push_back(*ftit);
+    for (cmCTestTestResult const& ft : resultsSet) {
+      if (cmHasLiteralPrefix(ft.CompletionStatus, "SKIP_RETURN_CODE=") ||
+          ft.CompletionStatus == "Disabled") {
+        disabledTests.push_back(ft);
       }
     }
 
@@ -506,11 +532,15 @@ int cmCTestTestHandler::ProcessHandler()
                  << static_cast<int>(percent + .5f) << "% tests passed, "
                  << failed.size() << " tests failed out of " << total
                  << std::endl);
+    if ((!this->CTest->GetLabelsForSubprojects().empty() &&
+         this->CTest->GetSubprojectSummary())) {
+      this->PrintLabelOrSubprojectSummary(true);
+    }
     if (this->CTest->GetLabelSummary()) {
-      this->PrintLabelSummary();
+      this->PrintLabelOrSubprojectSummary(false);
     }
     char realBuf[1024];
-    sprintf(realBuf, "%6.2f sec", (double)(clock_finish - clock_start));
+    sprintf(realBuf, "%6.2f sec", clock_finish - clock_start);
     cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT,
                        "\nTotal Test time (real) = " << realBuf << "\n",
                        this->Quiet);
@@ -522,17 +552,15 @@ int cmCTestTestHandler::ProcessHandler()
       this->StartLogFile("TestsDisabled", ofs);
 
       const char* disabled_reason;
-      for (std::vector<cmCTestTestHandler::cmCTestTestResult>::iterator dtit =
-             disabledTests.begin();
-           dtit != disabledTests.end(); ++dtit) {
-        ofs << dtit->TestCount << ":" << dtit->Name << std::endl;
-        if (dtit->CompletionStatus == "Disabled") {
+      for (cmCTestTestResult const& dt : disabledTests) {
+        ofs << dt.TestCount << ":" << dt.Name << std::endl;
+        if (dt.CompletionStatus == "Disabled") {
           disabled_reason = "Disabled";
         } else {
           disabled_reason = "Skipped";
         }
         cmCTestLog(this->CTest, HANDLER_OUTPUT, "\t"
-                     << std::setw(3) << dtit->TestCount << " - " << dtit->Name
+                     << std::setw(3) << dt.TestCount << " - " << dt.Name
                      << " (" << disabled_reason << ")" << std::endl);
       }
     }
@@ -543,16 +571,14 @@ int cmCTestTestHandler::ProcessHandler()
                    << "The following tests FAILED:" << std::endl);
       this->StartLogFile("TestsFailed", ofs);
 
-      for (SetOfTests::iterator ftit = resultsSet.begin();
-           ftit != resultsSet.end(); ++ftit) {
-        if (ftit->Status != cmCTestTestHandler::COMPLETED &&
-            !cmHasLiteralPrefix(ftit->CompletionStatus, "SKIP_RETURN_CODE=") &&
-            ftit->CompletionStatus != "Disabled") {
-          ofs << ftit->TestCount << ":" << ftit->Name << std::endl;
-          cmCTestLog(
-            this->CTest, HANDLER_OUTPUT, "\t"
-              << std::setw(3) << ftit->TestCount << " - " << ftit->Name << " ("
-              << this->GetTestStatus(ftit->Status) << ")" << std::endl);
+      for (cmCTestTestResult const& ft : resultsSet) {
+        if (ft.Status != cmCTestTestHandler::COMPLETED &&
+            !cmHasLiteralPrefix(ft.CompletionStatus, "SKIP_RETURN_CODE=") &&
+            ft.CompletionStatus != "Disabled") {
+          ofs << ft.TestCount << ":" << ft.Name << std::endl;
+          cmCTestLog(this->CTest, HANDLER_OUTPUT, "\t"
+                       << std::setw(3) << ft.TestCount << " - " << ft.Name
+                       << " (" << this->GetTestStatus(ft) << ")" << std::endl);
         }
       }
     }
@@ -566,7 +592,7 @@ int cmCTestTestHandler::ProcessHandler()
       cmCTestLog(this->CTest, ERROR_MESSAGE, "Cannot create "
                    << (this->MemCheck ? "memory check" : "testing")
                    << " XML file" << std::endl);
-      this->LogFile = CM_NULLPTR;
+      this->LogFile = nullptr;
       return 1;
     }
     cmXMLWriter xml(xmlfile);
@@ -574,88 +600,98 @@ int cmCTestTestHandler::ProcessHandler()
   }
 
   if (!this->PostProcessHandler()) {
-    this->LogFile = CM_NULLPTR;
+    this->LogFile = nullptr;
     return -1;
   }
 
   if (!failed.empty()) {
-    this->LogFile = CM_NULLPTR;
+    this->LogFile = nullptr;
     return -1;
   }
-  this->LogFile = CM_NULLPTR;
+  this->LogFile = nullptr;
   return 0;
 }
 
-void cmCTestTestHandler::PrintLabelSummary()
+void cmCTestTestHandler::PrintLabelOrSubprojectSummary(bool doSubProject)
 {
-  cmCTestTestHandler::ListOfTests::iterator it = this->TestList.begin();
+  // collect subproject labels
+  std::vector<std::string> subprojects =
+    this->CTest->GetLabelsForSubprojects();
   std::map<std::string, double> labelTimes;
   std::map<std::string, int> labelCounts;
   std::set<std::string> labels;
-  // initialize maps
   std::string::size_type maxlen = 0;
-  for (; it != this->TestList.end(); ++it) {
-    cmCTestTestProperties& p = *it;
-    if (!p.Labels.empty()) {
-      for (std::vector<std::string>::iterator l = p.Labels.begin();
-           l != p.Labels.end(); ++l) {
-        if ((*l).size() > maxlen) {
-          maxlen = (*l).size();
+  // initialize maps
+  for (cmCTestTestProperties& p : this->TestList) {
+    for (std::string const& l : p.Labels) {
+      // first check to see if the current label is a subproject label
+      bool isSubprojectLabel = false;
+      std::vector<std::string>::iterator subproject =
+        std::find(subprojects.begin(), subprojects.end(), l);
+      if (subproject != subprojects.end()) {
+        isSubprojectLabel = true;
+      }
+      // if we are doing sub projects and this label is one, then use it
+      // if we are not doing sub projects and the label is not one use it
+      if ((doSubProject && isSubprojectLabel) ||
+          (!doSubProject && !isSubprojectLabel)) {
+        if (l.size() > maxlen) {
+          maxlen = l.size();
         }
-        labels.insert(*l);
-        labelTimes[*l] = 0;
-        labelCounts[*l] = 0;
+        labels.insert(l);
+        labelTimes[l] = 0;
+        labelCounts[l] = 0;
       }
     }
   }
-  cmCTestTestHandler::TestResultsVector::iterator ri =
-    this->TestResults.begin();
   // fill maps
-  for (; ri != this->TestResults.end(); ++ri) {
-    cmCTestTestResult& result = *ri;
+  for (cmCTestTestResult& result : this->TestResults) {
     cmCTestTestProperties& p = *result.Properties;
-    if (!p.Labels.empty()) {
-      for (std::vector<std::string>::iterator l = p.Labels.begin();
-           l != p.Labels.end(); ++l) {
-        labelTimes[*l] += result.ExecutionTime;
-        ++labelCounts[*l];
+    for (std::string const& l : p.Labels) {
+      // only use labels found in labels
+      if (labels.find(l) != labels.end()) {
+        labelTimes[l] += result.ExecutionTime * result.Properties->Processors;
+        ++labelCounts[l];
       }
     }
   }
+  // if no labels are found return and print nothing
+  if (labels.empty()) {
+    return;
+  }
   // now print times
-  if (!labels.empty()) {
+  if (doSubProject) {
+    cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT,
+                       "\nSubproject Time Summary:", this->Quiet);
+  } else {
     cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT, "\nLabel Time Summary:",
                        this->Quiet);
   }
-  for (std::set<std::string>::const_iterator i = labels.begin();
-       i != labels.end(); ++i) {
-    std::string label = *i;
+  for (std::string const& i : labels) {
+    std::string label = i;
     label.resize(maxlen + 3, ' ');
 
     char buf[1024];
-    sprintf(buf, "%6.2f sec", labelTimes[*i]);
+    sprintf(buf, "%6.2f sec*proc", labelTimes[i]);
 
     std::ostringstream labelCountStr;
-    labelCountStr << "(" << labelCounts[*i] << " test";
-    if (labelCounts[*i] > 1) {
+    labelCountStr << "(" << labelCounts[i] << " test";
+    if (labelCounts[i] > 1) {
       labelCountStr << "s";
     }
     labelCountStr << ")";
-
     cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT, "\n"
                          << label << " = " << buf << " "
                          << labelCountStr.str(),
                        this->Quiet);
     if (this->LogFile) {
-      *this->LogFile << "\n" << *i << " = " << buf << "\n";
+      *this->LogFile << "\n" << i << " = " << buf << "\n";
     }
   }
-  if (!labels.empty()) {
-    if (this->LogFile) {
-      *this->LogFile << "\n";
-    }
-    cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT, "\n", this->Quiet);
+  if (this->LogFile) {
+    *this->LogFile << "\n";
   }
+  cmCTestOptionalLog(this->CTest, HANDLER_OUTPUT, "\n", this->Quiet);
 }
 
 void cmCTestTestHandler::CheckLabelFilterInclude(cmCTestTestProperties& it)
@@ -673,9 +709,8 @@ void cmCTestTestHandler::CheckLabelFilterInclude(cmCTestTestProperties& it)
   // check to see if the label regular expression matches
   bool found = false; // assume it does not match
   // loop over all labels and look for match
-  for (std::vector<std::string>::iterator l = it.Labels.begin();
-       l != it.Labels.end(); ++l) {
-    if (this->IncludeLabelRegularExpression.find(*l)) {
+  for (std::string const& l : it.Labels) {
+    if (this->IncludeLabelRegularExpression.find(l)) {
       found = true;
     }
   }
@@ -699,9 +734,8 @@ void cmCTestTestHandler::CheckLabelFilterExclude(cmCTestTestProperties& it)
   // check to see if the label regular expression matches
   bool found = false; // assume it does not match
   // loop over all labels and look for match
-  for (std::vector<std::string>::iterator l = it.Labels.begin();
-       l != it.Labels.end(); ++l) {
-    if (this->ExcludeLabelRegularExpression.find(*l)) {
+  for (std::string const& l : it.Labels) {
+    if (this->ExcludeLabelRegularExpression.find(l)) {
       found = true;
     }
   }
@@ -730,16 +764,15 @@ void cmCTestTestHandler::ComputeTestList()
   cmCTestTestHandler::ListOfTests::size_type tmsize = this->TestList.size();
   // how many tests are in based on RegExp?
   int inREcnt = 0;
-  cmCTestTestHandler::ListOfTests::iterator it;
-  for (it = this->TestList.begin(); it != this->TestList.end(); it++) {
-    this->CheckLabelFilter(*it);
-    if (it->IsInBasedOnREOptions) {
+  for (cmCTestTestProperties& tp : this->TestList) {
+    this->CheckLabelFilter(tp);
+    if (tp.IsInBasedOnREOptions) {
       inREcnt++;
     }
   }
   // expand the test list based on the union flag
   if (this->UseUnion) {
-    this->ExpandTestsToRunInformation((int)tmsize);
+    this->ExpandTestsToRunInformation(static_cast<int>(tmsize));
   } else {
     this->ExpandTestsToRunInformation(inREcnt);
   }
@@ -748,9 +781,9 @@ void cmCTestTestHandler::ComputeTestList()
   inREcnt = 0;
   std::string last_directory;
   ListOfTests finalList;
-  for (it = this->TestList.begin(); it != this->TestList.end(); it++) {
+  for (cmCTestTestProperties& tp : this->TestList) {
     cnt++;
-    if (it->IsInBasedOnREOptions) {
+    if (tp.IsInBasedOnREOptions) {
       inREcnt++;
     }
 
@@ -759,7 +792,7 @@ void cmCTestTestHandler::ComputeTestList()
       if ((!this->TestsToRun.empty() &&
            std::find(this->TestsToRun.begin(), this->TestsToRun.end(), cnt) ==
              this->TestsToRun.end()) &&
-          !it->IsInBasedOnREOptions) {
+          !tp.IsInBasedOnREOptions) {
         continue;
       }
     } else {
@@ -767,12 +800,12 @@ void cmCTestTestHandler::ComputeTestList()
       if ((!this->TestsToRun.empty() &&
            std::find(this->TestsToRun.begin(), this->TestsToRun.end(),
                      inREcnt) == this->TestsToRun.end()) ||
-          !it->IsInBasedOnREOptions) {
+          !tp.IsInBasedOnREOptions) {
         continue;
       }
     }
-    it->Index = cnt; // save the index into the test list for this test
-    finalList.push_back(*it);
+    tp.Index = cnt; // save the index into the test list for this test
+    finalList.push_back(tp);
   }
 
   UpdateForFixtures(finalList);
@@ -789,10 +822,9 @@ void cmCTestTestHandler::ComputeTestListForRerunFailed()
 {
   this->ExpandTestsToRunInformationForRerunFailed();
 
-  cmCTestTestHandler::ListOfTests::iterator it;
   ListOfTests finalList;
   int cnt = 0;
-  for (it = this->TestList.begin(); it != this->TestList.end(); it++) {
+  for (cmCTestTestProperties& tp : this->TestList) {
     cnt++;
 
     // if this test is not in our list of tests to run, then skip it.
@@ -802,8 +834,8 @@ void cmCTestTestHandler::ComputeTestListForRerunFailed()
       continue;
     }
 
-    it->Index = cnt;
-    finalList.push_back(*it);
+    tp.Index = cnt;
+    finalList.push_back(tp);
   }
 
   UpdateForFixtures(finalList);
@@ -857,24 +889,18 @@ void cmCTestTestHandler::UpdateForFixtures(ListOfTests& tests) const
        it != this->TestList.end(); ++it) {
     const cmCTestTestProperties& p = *it;
 
-    const std::set<std::string>& setups = p.FixturesSetup;
-    for (std::set<std::string>::const_iterator depsIt = setups.begin();
-         depsIt != setups.end(); ++depsIt) {
-      fixtureSetups.insert(std::make_pair(*depsIt, it));
+    for (std::string const& deps : p.FixturesSetup) {
+      fixtureSetups.insert(std::make_pair(deps, it));
     }
 
-    const std::set<std::string>& cleanups = p.FixturesCleanup;
-    for (std::set<std::string>::const_iterator depsIt = cleanups.begin();
-         depsIt != cleanups.end(); ++depsIt) {
-      fixtureCleanups.insert(std::make_pair(*depsIt, it));
+    for (std::string const& deps : p.FixturesCleanup) {
+      fixtureCleanups.insert(std::make_pair(deps, it));
     }
   }
 
   // Prepare fast lookup of tests already included in our list of tests
   std::set<std::string> addedTests;
-  for (ListOfTests::const_iterator it = tests.begin(); it != tests.end();
-       ++it) {
-    const cmCTestTestProperties& p = *it;
+  for (cmCTestTestProperties const& p : tests) {
     addedTests.insert(p.Name);
   }
 
@@ -882,8 +908,8 @@ void cmCTestTestHandler::UpdateForFixtures(ListOfTests& tests) const
   // tests array for tests which require that fixture and tests which are
   // setups for that fixture. They are needed at the end to populate
   // dependencies of the cleanup tests in our final list of tests.
-  std::map<std::string, std::vector<size_t> > fixtureRequirements;
-  std::map<std::string, std::vector<size_t> > setupFixturesAdded;
+  std::map<std::string, std::vector<size_t>> fixtureRequirements;
+  std::map<std::string, std::vector<size_t>> setupFixturesAdded;
 
   // Use integer index for iteration because we append to
   // the tests vector as we go
@@ -908,10 +934,7 @@ void cmCTestTestHandler::UpdateForFixtures(ListOfTests& tests) const
     // Must copy the set of fixtures required because we may invalidate
     // the tests array by appending to it
     std::set<std::string> fixtures = tests[i].FixturesRequired;
-    for (std::set<std::string>::const_iterator fixturesIt = fixtures.begin();
-         fixturesIt != fixtures.end(); ++fixturesIt) {
-
-      const std::string& requiredFixtureName = *fixturesIt;
+    for (std::string const& requiredFixtureName : fixtures) {
       if (requiredFixtureName.empty()) {
         continue;
       }
@@ -1010,11 +1033,7 @@ void cmCTestTestHandler::UpdateForFixtures(ListOfTests& tests) const
     }
 
     // 2. Record all setup fixtures included in the final list of tests
-    for (std::set<std::string>::const_iterator fixturesIt =
-           tests[i].FixturesSetup.begin();
-         fixturesIt != tests[i].FixturesSetup.end(); ++fixturesIt) {
-
-      const std::string& setupFixtureName = *fixturesIt;
+    for (std::string const& setupFixtureName : tests[i].FixturesSetup) {
       if (setupFixtureName.empty()) {
         continue;
       }
@@ -1028,23 +1047,18 @@ void cmCTestTestHandler::UpdateForFixtures(ListOfTests& tests) const
   // setup tests for that fixture. The latter is required to handle the
   // pathological case where setup and cleanup tests are in the test set
   // but no other test has that fixture as a requirement.
-  for (ListOfTests::iterator tIt = tests.begin(); tIt != tests.end(); ++tIt) {
-    cmCTestTestProperties& p = *tIt;
+  for (cmCTestTestProperties& p : tests) {
     const std::set<std::string>& cleanups = p.FixturesCleanup;
-    for (std::set<std::string>::const_iterator fIt = cleanups.begin();
-         fIt != cleanups.end(); ++fIt) {
-      const std::string& fixture = *fIt;
-
+    for (std::string const& fixture : cleanups) {
       // This cleanup test could be part of the original test list that was
       // passed in. It is then possible that no other test requires the
       // fIt fixture, so we have to check for this.
-      std::map<std::string, std::vector<size_t> >::const_iterator cIt =
+      std::map<std::string, std::vector<size_t>>::const_iterator cIt =
         fixtureRequirements.find(fixture);
       if (cIt != fixtureRequirements.end()) {
         const std::vector<size_t>& indices = cIt->second;
-        for (std::vector<size_t>::const_iterator indexIt = indices.begin();
-             indexIt != indices.end(); ++indexIt) {
-          const std::string& reqTestName = tests[*indexIt].Name;
+        for (size_t index : indices) {
+          const std::string& reqTestName = tests[index].Name;
           if (std::find(p.Depends.begin(), p.Depends.end(), reqTestName) ==
               p.Depends.end()) {
             p.Depends.push_back(reqTestName);
@@ -1057,9 +1071,8 @@ void cmCTestTestHandler::UpdateForFixtures(ListOfTests& tests) const
       cIt = setupFixturesAdded.find(fixture);
       if (cIt != setupFixturesAdded.end()) {
         const std::vector<size_t>& indices = cIt->second;
-        for (std::vector<size_t>::const_iterator indexIt = indices.begin();
-             indexIt != indices.end(); ++indexIt) {
-          const std::string& setupTestName = tests[*indexIt].Name;
+        for (size_t index : indices) {
+          const std::string& setupTestName = tests[index].Name;
           if (std::find(p.Depends.begin(), p.Depends.end(), setupTestName) ==
               p.Depends.end()) {
             p.Depends.push_back(setupTestName);
@@ -1078,9 +1091,7 @@ void cmCTestTestHandler::UpdateForFixtures(ListOfTests& tests) const
 void cmCTestTestHandler::UpdateMaxTestNameWidth()
 {
   std::string::size_type max = this->CTest->GetMaxTestNameWidth();
-  for (cmCTestTestHandler::ListOfTests::iterator it = this->TestList.begin();
-       it != this->TestList.end(); it++) {
-    cmCTestTestProperties& p = *it;
+  for (cmCTestTestProperties& p : this->TestList) {
     if (max < p.Name.size()) {
       max = p.Name.size();
     }
@@ -1215,12 +1226,10 @@ void cmCTestTestHandler::ProcessDirectory(std::vector<std::string>& passed,
 
   bool randomSchedule = this->CTest->GetScheduleType() == "Random";
   if (randomSchedule) {
-    srand((unsigned)time(CM_NULLPTR));
+    srand(static_cast<unsigned>(time(nullptr)));
   }
 
-  for (ListOfTests::iterator it = this->TestList.begin();
-       it != this->TestList.end(); ++it) {
-    cmCTestTestProperties& p = *it;
+  for (cmCTestTestProperties& p : this->TestList) {
     cmCTestMultiProcessHandler::TestSet depends;
 
     if (randomSchedule) {
@@ -1232,19 +1241,17 @@ void cmCTestTestHandler::ProcessDirectory(std::vector<std::string>& passed,
     }
 
     if (!p.Depends.empty()) {
-      for (std::vector<std::string>::iterator i = p.Depends.begin();
-           i != p.Depends.end(); ++i) {
-        for (ListOfTests::iterator it2 = this->TestList.begin();
-             it2 != this->TestList.end(); ++it2) {
-          if (it2->Name == *i) {
-            depends.insert(it2->Index);
+      for (std::string const& i : p.Depends) {
+        for (cmCTestTestProperties const& it2 : this->TestList) {
+          if (it2.Name == i) {
+            depends.insert(it2.Index);
             break; // break out of test loop as name can only match 1
           }
         }
       }
     }
-    tests[it->Index] = depends;
-    properties[it->Index] = &*it;
+    tests[p.Index] = depends;
+    properties[p.Index] = &p;
   }
   parallel->SetTests(tests, properties);
   parallel->SetPassFailVectors(&passed, &failed);
@@ -1277,83 +1284,85 @@ void cmCTestTestHandler::GenerateDartOutput(cmXMLWriter& xml)
   }
 
   this->CTest->StartXML(xml, this->AppendXML);
+  this->CTest->GenerateSubprojectsOutput(xml);
   xml.StartElement("Testing");
   xml.Element("StartDateTime", this->StartTest);
   xml.Element("StartTestTime", this->StartTestTime);
   xml.StartElement("TestList");
-  cmCTestTestHandler::TestResultsVector::size_type cc;
-  for (cc = 0; cc < this->TestResults.size(); cc++) {
-    cmCTestTestResult* result = &this->TestResults[cc];
-    std::string testPath = result->Path + "/" + result->Name;
+  for (cmCTestTestResult const& result : this->TestResults) {
+    std::string testPath = result.Path + "/" + result.Name;
     xml.Element("Test", this->CTest->GetShortPathToFile(testPath.c_str()));
   }
   xml.EndElement(); // TestList
-  for (cc = 0; cc < this->TestResults.size(); cc++) {
-    cmCTestTestResult* result = &this->TestResults[cc];
+  for (cmCTestTestResult& result : this->TestResults) {
     this->WriteTestResultHeader(xml, result);
     xml.StartElement("Results");
 
-    if (result->Status != cmCTestTestHandler::NOT_RUN) {
-      if (result->Status != cmCTestTestHandler::COMPLETED ||
-          result->ReturnValue) {
+    if (result.Status != cmCTestTestHandler::NOT_RUN) {
+      if (result.Status != cmCTestTestHandler::COMPLETED ||
+          result.ReturnValue) {
         xml.StartElement("NamedMeasurement");
         xml.Attribute("type", "text/string");
         xml.Attribute("name", "Exit Code");
-        xml.Element("Value", this->GetTestStatus(result->Status));
+        xml.Element("Value", this->GetTestStatus(result));
         xml.EndElement(); // NamedMeasurement
 
         xml.StartElement("NamedMeasurement");
         xml.Attribute("type", "text/string");
         xml.Attribute("name", "Exit Value");
-        xml.Element("Value", result->ReturnValue);
+        xml.Element("Value", result.ReturnValue);
         xml.EndElement(); // NamedMeasurement
       }
-      this->GenerateRegressionImages(xml, result->DartString);
+      this->GenerateRegressionImages(xml, result.DartString);
       xml.StartElement("NamedMeasurement");
       xml.Attribute("type", "numeric/double");
       xml.Attribute("name", "Execution Time");
-      xml.Element("Value", result->ExecutionTime);
+      xml.Element("Value", result.ExecutionTime);
       xml.EndElement(); // NamedMeasurement
-      if (!result->Reason.empty()) {
+      if (!result.Reason.empty()) {
         const char* reasonType = "Pass Reason";
-        if (result->Status != cmCTestTestHandler::COMPLETED) {
+        if (result.Status != cmCTestTestHandler::COMPLETED) {
           reasonType = "Fail Reason";
         }
         xml.StartElement("NamedMeasurement");
         xml.Attribute("type", "text/string");
         xml.Attribute("name", reasonType);
-        xml.Element("Value", result->Reason);
+        xml.Element("Value", result.Reason);
         xml.EndElement(); // NamedMeasurement
       }
     }
 
     xml.StartElement("NamedMeasurement");
+    xml.Attribute("type", "numeric/double");
+    xml.Attribute("name", "Processors");
+    xml.Element("Value", result.Properties->Processors);
+    xml.EndElement(); // NamedMeasurement
+
+    xml.StartElement("NamedMeasurement");
     xml.Attribute("type", "text/string");
     xml.Attribute("name", "Completion Status");
-    xml.Element("Value", result->CompletionStatus);
+    xml.Element("Value", result.CompletionStatus);
     xml.EndElement(); // NamedMeasurement
 
     xml.StartElement("NamedMeasurement");
     xml.Attribute("type", "text/string");
     xml.Attribute("name", "Command Line");
-    xml.Element("Value", result->FullCommandLine);
+    xml.Element("Value", result.FullCommandLine);
     xml.EndElement(); // NamedMeasurement
-    std::map<std::string, std::string>::iterator measureIt;
-    for (measureIt = result->Properties->Measurements.begin();
-         measureIt != result->Properties->Measurements.end(); ++measureIt) {
+    for (auto const& measure : result.Properties->Measurements) {
       xml.StartElement("NamedMeasurement");
       xml.Attribute("type", "text/string");
-      xml.Attribute("name", measureIt->first);
-      xml.Element("Value", measureIt->second);
+      xml.Attribute("name", measure.first);
+      xml.Element("Value", measure.second);
       xml.EndElement(); // NamedMeasurement
     }
     xml.StartElement("Measurement");
     xml.StartElement("Value");
-    if (result->CompressOutput) {
+    if (result.CompressOutput) {
       xml.Attribute("encoding", "base64");
       xml.Attribute("compression", "gzip");
     }
-    xml.Content(result->Output);
+    xml.Content(result.Output);
     xml.EndElement(); // Value
     xml.EndElement(); // Measurement
     xml.EndElement(); // Results
@@ -1371,32 +1380,31 @@ void cmCTestTestHandler::GenerateDartOutput(cmXMLWriter& xml)
 }
 
 void cmCTestTestHandler::WriteTestResultHeader(cmXMLWriter& xml,
-                                               cmCTestTestResult* result)
+                                               cmCTestTestResult const& result)
 {
   xml.StartElement("Test");
-  if (result->Status == cmCTestTestHandler::COMPLETED) {
+  if (result.Status == cmCTestTestHandler::COMPLETED) {
     xml.Attribute("Status", "passed");
-  } else if (result->Status == cmCTestTestHandler::NOT_RUN) {
+  } else if (result.Status == cmCTestTestHandler::NOT_RUN) {
     xml.Attribute("Status", "notrun");
   } else {
     xml.Attribute("Status", "failed");
   }
-  std::string testPath = result->Path + "/" + result->Name;
-  xml.Element("Name", result->Name);
-  xml.Element("Path", this->CTest->GetShortPathToFile(result->Path.c_str()));
+  std::string testPath = result.Path + "/" + result.Name;
+  xml.Element("Name", result.Name);
+  xml.Element("Path", this->CTest->GetShortPathToFile(result.Path.c_str()));
   xml.Element("FullName", this->CTest->GetShortPathToFile(testPath.c_str()));
-  xml.Element("FullCommandLine", result->FullCommandLine);
+  xml.Element("FullCommandLine", result.FullCommandLine);
 }
 
 void cmCTestTestHandler::WriteTestResultFooter(cmXMLWriter& xml,
-                                               cmCTestTestResult* result)
+                                               cmCTestTestResult const& result)
 {
-  if (!result->Properties->Labels.empty()) {
+  if (!result.Properties->Labels.empty()) {
     xml.StartElement("Labels");
-    std::vector<std::string> const& labels = result->Properties->Labels;
-    for (std::vector<std::string>::const_iterator li = labels.begin();
-         li != labels.end(); ++li) {
-      xml.Element("Label", *li);
+    std::vector<std::string> const& labels = result.Properties->Labels;
+    for (std::string const& label : labels) {
+      xml.Element("Label", label);
     }
     xml.EndElement(); // Labels
   }
@@ -1405,20 +1413,18 @@ void cmCTestTestHandler::WriteTestResultFooter(cmXMLWriter& xml,
 }
 
 void cmCTestTestHandler::AttachFiles(cmXMLWriter& xml,
-                                     cmCTestTestResult* result)
+                                     cmCTestTestResult& result)
 {
-  if (result->Status != cmCTestTestHandler::COMPLETED &&
-      !result->Properties->AttachOnFail.empty()) {
-    result->Properties->AttachedFiles.insert(
-      result->Properties->AttachedFiles.end(),
-      result->Properties->AttachOnFail.begin(),
-      result->Properties->AttachOnFail.end());
-  }
-  for (std::vector<std::string>::const_iterator file =
-         result->Properties->AttachedFiles.begin();
-       file != result->Properties->AttachedFiles.end(); ++file) {
-    const std::string& base64 = this->CTest->Base64GzipEncodeFile(*file);
-    std::string fname = cmSystemTools::GetFilenameName(*file);
+  if (result.Status != cmCTestTestHandler::COMPLETED &&
+      !result.Properties->AttachOnFail.empty()) {
+    result.Properties->AttachedFiles.insert(
+      result.Properties->AttachedFiles.end(),
+      result.Properties->AttachOnFail.begin(),
+      result.Properties->AttachOnFail.end());
+  }
+  for (std::string const& file : result.Properties->AttachedFiles) {
+    const std::string& base64 = this->CTest->Base64GzipEncodeFile(file);
+    std::string const fname = cmSystemTools::GetFilenameName(file);
     xml.StartElement("NamedMeasurement");
     xml.Attribute("name", "Attached File");
     xml.Attribute("encoding", "base64");
@@ -1432,18 +1438,16 @@ void cmCTestTestHandler::AttachFiles(cmXMLWriter& xml,
 
 int cmCTestTestHandler::ExecuteCommands(std::vector<std::string>& vec)
 {
-  std::vector<std::string>::iterator it;
-  for (it = vec.begin(); it != vec.end(); ++it) {
+  for (std::string const& it : vec) {
     int retVal = 0;
     cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
-                       "Run command: " << *it << std::endl, this->Quiet);
-    if (!cmSystemTools::RunSingleCommand(it->c_str(), CM_NULLPTR, CM_NULLPTR,
-                                         &retVal, CM_NULLPTR,
-                                         cmSystemTools::OUTPUT_MERGE
+                       "Run command: " << it << std::endl, this->Quiet);
+    if (!cmSystemTools::RunSingleCommand(it.c_str(), nullptr, nullptr, &retVal,
+                                         nullptr, cmSystemTools::OUTPUT_MERGE
                                          /*this->Verbose*/) ||
         retVal != 0) {
       cmCTestLog(this->CTest, ERROR_MESSAGE,
-                 "Problem running command: " << *it << std::endl);
+                 "Problem running command: " << it << std::endl);
       return 0;
     }
   }
@@ -1554,11 +1558,9 @@ std::string cmCTestTestHandler::FindExecutable(
   // if extraPaths are provided and we were not passed a full path, try them,
   // try any extra paths
   if (filepath.empty()) {
-    for (unsigned int i = 0; i < extraPaths.size(); ++i) {
-      std::string filepathExtra =
-        cmSystemTools::GetFilenamePath(extraPaths[i]);
-      std::string filenameExtra =
-        cmSystemTools::GetFilenameName(extraPaths[i]);
+    for (std::string const& extraPath : extraPaths) {
+      std::string filepathExtra = cmSystemTools::GetFilenamePath(extraPath);
+      std::string filenameExtra = cmSystemTools::GetFilenameName(extraPath);
       cmCTestTestHandler::AddConfigurations(ctest, attempted, attemptedConfigs,
                                             filepathExtra, filenameExtra);
     }
@@ -1593,9 +1595,9 @@ std::string cmCTestTestHandler::FindExecutable(
   // if everything else failed, check the users path, but only if a full path
   // wasn't specified
   if (fullPath.empty() && filepath.empty()) {
-    std::string path = cmSystemTools::FindProgram(filename.c_str());
-    if (path != "") {
-      resultingConfig = "";
+    std::string const path = cmSystemTools::FindProgram(filename.c_str());
+    if (!path.empty()) {
+      resultingConfig.clear();
       return path;
     }
   }
@@ -1603,9 +1605,8 @@ std::string cmCTestTestHandler::FindExecutable(
     cmCTestLog(ctest, HANDLER_OUTPUT, "Could not find executable "
                  << testCommand << "\n"
                  << "Looked in the following places:\n");
-    for (std::vector<std::string>::iterator i = failed.begin();
-         i != failed.end(); ++i) {
-      cmCTestLog(ctest, HANDLER_OUTPUT, *i << "\n");
+    for (std::string const& f : failed) {
+      cmCTestLog(ctest, HANDLER_OUTPUT, f << "\n");
     }
   }
 
@@ -1635,9 +1636,9 @@ void cmCTestTestHandler::GetListOfTests()
   cm.SetHomeOutputDirectory("");
   cm.GetCurrentSnapshot().SetDefaultDefinitions();
   cmGlobalGenerator gg(&cm);
-  CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(&gg, cm.GetCurrentSnapshot()));
-  mf->AddDefinition("CTEST_CONFIGURATION_TYPE",
-                    this->CTest->GetConfigType().c_str());
+  cmMakefile mf(&gg, cm.GetCurrentSnapshot());
+  mf.AddDefinition("CTEST_CONFIGURATION_TYPE",
+                   this->CTest->GetConfigType().c_str());
 
   // Add handler for ADD_TEST
   cmCTestAddTestCommand* newCom1 = new cmCTestAddTestCommand;
@@ -1660,6 +1661,12 @@ void cmCTestTestHandler::GetListOfTests()
   newCom4->TestHandler = this;
   cm.GetState()->AddBuiltinCommand("set_tests_properties", newCom4);
 
+  // Add handler for SET_DIRECTORY_PROPERTIES
+  cmCTestSetDirectoryPropertiesCommand* newCom5 =
+    new cmCTestSetDirectoryPropertiesCommand;
+  newCom5->TestHandler = this;
+  cm.GetState()->AddBuiltinCommand("set_directory_properties", newCom5);
+
   const char* testFilename;
   if (cmSystemTools::FileExists("CTestTestfile.cmake")) {
     // does the CTestTestfile.cmake exist ?
@@ -1671,7 +1678,7 @@ void cmCTestTestHandler::GetListOfTests()
     return;
   }
 
-  if (!mf->ReadListFile(testFilename)) {
+  if (!mf.ReadListFile(testFilename)) {
     return;
   }
   if (cmSystemTools::GetErrorOccuredFlag()) {
@@ -1693,17 +1700,20 @@ void cmCTestTestHandler::UseExcludeRegExp()
   this->UseExcludeRegExpFirst = !this->UseIncludeRegExpFlag;
 }
 
-const char* cmCTestTestHandler::GetTestStatus(int status)
+const char* cmCTestTestHandler::GetTestStatus(cmCTestTestResult const& result)
 {
   static const char* statuses[] = { "Not Run",     "Timeout",   "SEGFAULT",
                                     "ILLEGAL",     "INTERRUPT", "NUMERICAL",
                                     "OTHER_FAULT", "Failed",    "BAD_COMMAND",
                                     "Completed" };
-
+  int status = result.Status;
   if (status < cmCTestTestHandler::NOT_RUN ||
       status > cmCTestTestHandler::COMPLETED) {
     return "No Status";
   }
+  if (status == cmCTestTestHandler::OTHER_FAULT) {
+    return result.ExceptionStatus.c_str();
+  }
   return statuses[status];
 }
 
@@ -1792,7 +1802,7 @@ void cmCTestTestHandler::ExpandTestsToRunInformationForRerunFailed()
     if (fileNameSubstring != pattern) {
       continue;
     }
-    if (logName == "") {
+    if (logName.empty()) {
       logName = fileName;
     } else {
       // if multiple matching logs were found we use the most recently
@@ -2086,116 +2096,117 @@ bool cmCTestTestHandler::SetTestsProperties(
       break;
     }
     std::string val = *it;
-    std::vector<std::string>::const_iterator tit;
-    for (tit = tests.begin(); tit != tests.end(); ++tit) {
-      cmCTestTestHandler::ListOfTests::iterator rtit;
-      for (rtit = this->TestList.begin(); rtit != this->TestList.end();
-           ++rtit) {
-        if (*tit == rtit->Name) {
+    for (std::string const& t : tests) {
+      for (cmCTestTestProperties& rt : this->TestList) {
+        if (t == rt.Name) {
           if (key == "WILL_FAIL") {
-            rtit->WillFail = cmSystemTools::IsOn(val.c_str());
+            rt.WillFail = cmSystemTools::IsOn(val.c_str());
           }
           if (key == "DISABLED") {
-            rtit->Disabled = cmSystemTools::IsOn(val.c_str());
+            rt.Disabled = cmSystemTools::IsOn(val.c_str());
           }
           if (key == "ATTACHED_FILES") {
-            cmSystemTools::ExpandListArgument(val, rtit->AttachedFiles);
+            cmSystemTools::ExpandListArgument(val, rt.AttachedFiles);
           }
           if (key == "ATTACHED_FILES_ON_FAIL") {
-            cmSystemTools::ExpandListArgument(val, rtit->AttachOnFail);
+            cmSystemTools::ExpandListArgument(val, rt.AttachOnFail);
           }
           if (key == "RESOURCE_LOCK") {
             std::vector<std::string> lval;
             cmSystemTools::ExpandListArgument(val, lval);
 
-            rtit->LockedResources.insert(lval.begin(), lval.end());
+            rt.LockedResources.insert(lval.begin(), lval.end());
           }
           if (key == "FIXTURES_SETUP") {
             std::vector<std::string> lval;
             cmSystemTools::ExpandListArgument(val, lval);
 
-            rtit->FixturesSetup.insert(lval.begin(), lval.end());
+            rt.FixturesSetup.insert(lval.begin(), lval.end());
           }
           if (key == "FIXTURES_CLEANUP") {
             std::vector<std::string> lval;
             cmSystemTools::ExpandListArgument(val, lval);
 
-            rtit->FixturesCleanup.insert(lval.begin(), lval.end());
+            rt.FixturesCleanup.insert(lval.begin(), lval.end());
           }
           if (key == "FIXTURES_REQUIRED") {
             std::vector<std::string> lval;
             cmSystemTools::ExpandListArgument(val, lval);
 
-            rtit->FixturesRequired.insert(lval.begin(), lval.end());
+            rt.FixturesRequired.insert(lval.begin(), lval.end());
           }
           if (key == "TIMEOUT") {
-            rtit->Timeout = atof(val.c_str());
-            rtit->ExplicitTimeout = true;
+            rt.Timeout = atof(val.c_str());
+            rt.ExplicitTimeout = true;
           }
           if (key == "COST") {
-            rtit->Cost = static_cast<float>(atof(val.c_str()));
+            rt.Cost = static_cast<float>(atof(val.c_str()));
           }
           if (key == "REQUIRED_FILES") {
-            cmSystemTools::ExpandListArgument(val, rtit->RequiredFiles);
+            cmSystemTools::ExpandListArgument(val, rt.RequiredFiles);
           }
           if (key == "RUN_SERIAL") {
-            rtit->RunSerial = cmSystemTools::IsOn(val.c_str());
+            rt.RunSerial = cmSystemTools::IsOn(val.c_str());
           }
           if (key == "FAIL_REGULAR_EXPRESSION") {
             std::vector<std::string> lval;
             cmSystemTools::ExpandListArgument(val, lval);
-            std::vector<std::string>::iterator crit;
-            for (crit = lval.begin(); crit != lval.end(); ++crit) {
-              rtit->ErrorRegularExpressions.push_back(
+            for (std::string const& cr : lval) {
+              rt.ErrorRegularExpressions.push_back(
                 std::pair<cmsys::RegularExpression, std::string>(
-                  cmsys::RegularExpression(crit->c_str()),
-                  std::string(*crit)));
+                  cmsys::RegularExpression(cr.c_str()), std::string(cr)));
             }
           }
           if (key == "PROCESSORS") {
-            rtit->Processors = atoi(val.c_str());
-            if (rtit->Processors < 1) {
-              rtit->Processors = 1;
+            rt.Processors = atoi(val.c_str());
+            if (rt.Processors < 1) {
+              rt.Processors = 1;
             }
           }
           if (key == "SKIP_RETURN_CODE") {
-            rtit->SkipReturnCode = atoi(val.c_str());
-            if (rtit->SkipReturnCode < 0 || rtit->SkipReturnCode > 255) {
-              rtit->SkipReturnCode = -1;
+            rt.SkipReturnCode = atoi(val.c_str());
+            if (rt.SkipReturnCode < 0 || rt.SkipReturnCode > 255) {
+              rt.SkipReturnCode = -1;
             }
           }
           if (key == "DEPENDS") {
-            cmSystemTools::ExpandListArgument(val, rtit->Depends);
+            cmSystemTools::ExpandListArgument(val, rt.Depends);
           }
           if (key == "ENVIRONMENT") {
-            cmSystemTools::ExpandListArgument(val, rtit->Environment);
+            cmSystemTools::ExpandListArgument(val, rt.Environment);
           }
           if (key == "LABELS") {
-            cmSystemTools::ExpandListArgument(val, rtit->Labels);
+            std::vector<std::string> Labels;
+            cmSystemTools::ExpandListArgument(val, Labels);
+            rt.Labels.insert(rt.Labels.end(), Labels.begin(), Labels.end());
+            // sort the array
+            std::sort(rt.Labels.begin(), rt.Labels.end());
+            // remove duplicates
+            std::vector<std::string>::iterator new_end =
+              std::unique(rt.Labels.begin(), rt.Labels.end());
+            rt.Labels.erase(new_end, rt.Labels.end());
           }
           if (key == "MEASUREMENT") {
             size_t pos = val.find_first_of('=');
             if (pos != std::string::npos) {
               std::string mKey = val.substr(0, pos);
               const char* mVal = val.c_str() + pos + 1;
-              rtit->Measurements[mKey] = mVal;
+              rt.Measurements[mKey] = mVal;
             } else {
-              rtit->Measurements[val] = "1";
+              rt.Measurements[val] = "1";
             }
           }
           if (key == "PASS_REGULAR_EXPRESSION") {
             std::vector<std::string> lval;
             cmSystemTools::ExpandListArgument(val, lval);
-            std::vector<std::string>::iterator crit;
-            for (crit = lval.begin(); crit != lval.end(); ++crit) {
-              rtit->RequiredRegularExpressions.push_back(
+            for (std::string const& cr : lval) {
+              rt.RequiredRegularExpressions.push_back(
                 std::pair<cmsys::RegularExpression, std::string>(
-                  cmsys::RegularExpression(crit->c_str()),
-                  std::string(*crit)));
+                  cmsys::RegularExpression(cr.c_str()), std::string(cr)));
             }
           }
           if (key == "WORKING_DIRECTORY") {
-            rtit->Directory = val;
+            rt.Directory = val;
           }
           if (key == "TIMEOUT_AFTER_MATCH") {
             std::vector<std::string> propArgs;
@@ -2205,15 +2216,13 @@ bool cmCTestTestHandler::SetTestsProperties(
                          "TIMEOUT_AFTER_MATCH expects two arguments, found "
                            << propArgs.size() << std::endl);
             } else {
-              rtit->AlternateTimeout = atof(propArgs[0].c_str());
+              rt.AlternateTimeout = atof(propArgs[0].c_str());
               std::vector<std::string> lval;
               cmSystemTools::ExpandListArgument(propArgs[1], lval);
-              std::vector<std::string>::iterator crit;
-              for (crit = lval.begin(); crit != lval.end(); ++crit) {
-                rtit->TimeoutRegularExpressions.push_back(
+              for (std::string const& cr : lval) {
+                rt.TimeoutRegularExpressions.push_back(
                   std::pair<cmsys::RegularExpression, std::string>(
-                    cmsys::RegularExpression(crit->c_str()),
-                    std::string(*crit)));
+                    cmsys::RegularExpression(cr.c_str()), std::string(cr)));
               }
             }
           }
@@ -2224,6 +2233,53 @@ bool cmCTestTestHandler::SetTestsProperties(
   return true;
 }
 
+bool cmCTestTestHandler::SetDirectoryProperties(
+  const std::vector<std::string>& args)
+{
+  std::vector<std::string>::const_iterator it;
+  std::vector<std::string> tests;
+  bool found = false;
+  for (it = args.begin(); it != args.end(); ++it) {
+    if (*it == "PROPERTIES") {
+      found = true;
+      break;
+    }
+    tests.push_back(*it);
+  }
+
+  if (!found) {
+    return false;
+  }
+  ++it; // skip PROPERTIES
+  for (; it != args.end(); ++it) {
+    std::string key = *it;
+    ++it;
+    if (it == args.end()) {
+      break;
+    }
+    std::string val = *it;
+    for (cmCTestTestProperties& rt : this->TestList) {
+      std::string cwd = cmSystemTools::GetCurrentWorkingDirectory();
+      if (cwd == rt.Directory) {
+        if (key == "LABELS") {
+          std::vector<std::string> DirectoryLabels;
+          cmSystemTools::ExpandListArgument(val, DirectoryLabels);
+          rt.Labels.insert(rt.Labels.end(), DirectoryLabels.begin(),
+                           DirectoryLabels.end());
+
+          // sort the array
+          std::sort(rt.Labels.begin(), rt.Labels.end());
+          // remove duplicates
+          std::vector<std::string>::iterator new_end =
+            std::unique(rt.Labels.begin(), rt.Labels.end());
+          rt.Labels.erase(new_end, rt.Labels.end());
+        }
+      }
+    }
+  }
+  return true;
+}
+
 bool cmCTestTestHandler::AddTest(const std::vector<std::string>& args)
 {
   const std::string& testname = args[0];
diff --git a/Source/CTest/cmCTestTestHandler.h b/Source/CTest/cmCTestTestHandler.h
index 0edcb143a..394d20ed0 100644
--- a/Source/CTest/cmCTestTestHandler.h
+++ b/Source/CTest/cmCTestTestHandler.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestTestHandler_h
 #define cmCTestTestHandler_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestGenericHandler.h"
 
@@ -36,7 +36,7 @@ public:
   /**
    * The main entry point for this class
    */
-  int ProcessHandler() CM_OVERRIDE;
+  int ProcessHandler() override;
 
   /**
    * When both -R and -I are used should te resulting test list be the
@@ -54,7 +54,7 @@ public:
   /**
    * This method is called when reading CTest custom file
    */
-  void PopulateCustomVectors(cmMakefile* mf) CM_OVERRIDE;
+  void PopulateCustomVectors(cmMakefile* mf) override;
 
   ///! Control the use of the regular expresisons, call these methods to turn
   /// them on
@@ -90,7 +90,12 @@ public:
    */
   bool SetTestsProperties(const std::vector<std::string>& args);
 
-  void Initialize() CM_OVERRIDE;
+  /**
+   * Set directory properties
+   */
+  bool SetDirectoryProperties(const std::vector<std::string>& args);
+
+  void Initialize() override;
 
   // NOTE: This struct is Saved/Restored
   // in cmCTestTestHandler, if you add to this class
@@ -105,11 +110,11 @@ public:
     std::vector<std::string> Depends;
     std::vector<std::string> AttachedFiles;
     std::vector<std::string> AttachOnFail;
-    std::vector<std::pair<cmsys::RegularExpression, std::string> >
+    std::vector<std::pair<cmsys::RegularExpression, std::string>>
       ErrorRegularExpressions;
-    std::vector<std::pair<cmsys::RegularExpression, std::string> >
+    std::vector<std::pair<cmsys::RegularExpression, std::string>>
       RequiredRegularExpressions;
-    std::vector<std::pair<cmsys::RegularExpression, std::string> >
+    std::vector<std::pair<cmsys::RegularExpression, std::string>>
       TimeoutRegularExpressions;
     std::map<std::string, std::string> Measurements;
     bool IsInBasedOnREOptions;
@@ -144,6 +149,7 @@ public:
     double ExecutionTime;
     int ReturnValue;
     int Status;
+    std::string ExceptionStatus;
     bool CompressOutput;
     std::string CompletionStatus;
     std::string Output;
@@ -182,10 +188,12 @@ protected:
   virtual void GenerateTestCommand(std::vector<std::string>& args, int test);
   int ExecuteCommands(std::vector<std::string>& vec);
 
-  void WriteTestResultHeader(cmXMLWriter& xml, cmCTestTestResult* result);
-  void WriteTestResultFooter(cmXMLWriter& xml, cmCTestTestResult* result);
+  void WriteTestResultHeader(cmXMLWriter& xml,
+                             cmCTestTestResult const& result);
+  void WriteTestResultFooter(cmXMLWriter& xml,
+                             cmCTestTestResult const& result);
   // Write attached test files into the xml
-  void AttachFiles(cmXMLWriter& xml, cmCTestTestResult* result);
+  void AttachFiles(cmXMLWriter& xml, cmCTestTestResult& result);
 
   //! Clean test output to specified length
   bool CleanTestOutput(std::string& output, size_t length);
@@ -226,7 +234,8 @@ private:
    */
   virtual void GenerateDartOutput(cmXMLWriter& xml);
 
-  void PrintLabelSummary();
+  void PrintLabelOrSubprojectSummary(bool isSubProject);
+
   /**
    * Run the tests for a directory and any subdirectories
    */
@@ -262,7 +271,7 @@ private:
    */
   std::string FindTheExecutable(const char* exe);
 
-  const char* GetTestStatus(int status);
+  const char* GetTestStatus(cmCTestTestResult const&);
   void ExpandTestsToRunInformation(size_t numPossibleTests);
   void ExpandTestsToRunInformationForRerunFailed();
 
diff --git a/Source/CTest/cmCTestUpdateCommand.cxx b/Source/CTest/cmCTestUpdateCommand.cxx
index 8c037545f..3d800f8b3 100644
--- a/Source/CTest/cmCTestUpdateCommand.cxx
+++ b/Source/CTest/cmCTestUpdateCommand.cxx
@@ -78,12 +78,12 @@ cmCTestGenericHandler* cmCTestUpdateCommand::InitializeHandler()
     this->CTest->GetInitializedHandler("update");
   if (!handler) {
     this->SetError("internal CTest error. Cannot instantiate update handler");
-    return CM_NULLPTR;
+    return nullptr;
   }
   handler->SetCommand(this);
   if (source_dir.empty()) {
     this->SetError("source directory not specified. Please use SOURCE tag");
-    return CM_NULLPTR;
+    return nullptr;
   }
   handler->SetOption("SourceDirectory", source_dir.c_str());
   handler->SetQuiet(this->Quiet);
diff --git a/Source/CTest/cmCTestUpdateCommand.h b/Source/CTest/cmCTestUpdateCommand.h
index 3b8f0a641..3b2f3e102 100644
--- a/Source/CTest/cmCTestUpdateCommand.h
+++ b/Source/CTest/cmCTestUpdateCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestUpdateCommand_h
 #define cmCTestUpdateCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestHandlerCommand.h"
 
@@ -25,7 +25,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestUpdateCommand* ni = new cmCTestUpdateCommand;
     ni->CTest = this->CTest;
@@ -36,10 +36,10 @@ public:
   /**
    * The name of the command as specified in CMakeList.txt.
    */
-  std::string GetName() const CM_OVERRIDE { return "ctest_update"; }
+  std::string GetName() const override { return "ctest_update"; }
 
 protected:
-  cmCTestGenericHandler* InitializeHandler() CM_OVERRIDE;
+  cmCTestGenericHandler* InitializeHandler() override;
 };
 
 #endif
diff --git a/Source/CTest/cmCTestUpdateHandler.cxx b/Source/CTest/cmCTestUpdateHandler.cxx
index e08a9b7bd..786ed5e47 100644
--- a/Source/CTest/cmCTestUpdateHandler.cxx
+++ b/Source/CTest/cmCTestUpdateHandler.cxx
@@ -2,6 +2,7 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCTestUpdateHandler.h"
 
+#include "cmAlgorithms.h"
 #include "cmCLocaleEnvironmentScope.h"
 #include "cmCTest.h"
 #include "cmCTestBZR.h"
@@ -16,7 +17,7 @@
 #include "cmVersion.h"
 #include "cmXMLWriter.h"
 
-#include "cm_auto_ptr.hxx"
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 
 static const char* cmCTestUpdateHandlerUpdateStrings[] = {
@@ -39,7 +40,7 @@ cmCTestUpdateHandler::cmCTestUpdateHandler()
 void cmCTestUpdateHandler::Initialize()
 {
   this->Superclass::Initialize();
-  this->UpdateCommand = "";
+  this->UpdateCommand.clear();
   this->UpdateType = e_CVS;
 }
 
@@ -134,28 +135,28 @@ int cmCTestUpdateHandler::ProcessHandler()
                      , this->Quiet);
 
   // Create an object to interact with the VCS tool.
-  CM_AUTO_PTR<cmCTestVC> vc;
+  std::unique_ptr<cmCTestVC> vc;
   switch (this->UpdateType) {
     case e_CVS:
-      vc.reset(new cmCTestCVS(this->CTest, ofs));
+      vc = cm::make_unique<cmCTestCVS>(this->CTest, ofs);
       break;
     case e_SVN:
-      vc.reset(new cmCTestSVN(this->CTest, ofs));
+      vc = cm::make_unique<cmCTestSVN>(this->CTest, ofs);
       break;
     case e_BZR:
-      vc.reset(new cmCTestBZR(this->CTest, ofs));
+      vc = cm::make_unique<cmCTestBZR>(this->CTest, ofs);
       break;
     case e_GIT:
-      vc.reset(new cmCTestGIT(this->CTest, ofs));
+      vc = cm::make_unique<cmCTestGIT>(this->CTest, ofs);
       break;
     case e_HG:
-      vc.reset(new cmCTestHG(this->CTest, ofs));
+      vc = cm::make_unique<cmCTestHG>(this->CTest, ofs);
       break;
     case e_P4:
-      vc.reset(new cmCTestP4(this->CTest, ofs));
+      vc = cm::make_unique<cmCTestP4>(this->CTest, ofs);
       break;
     default:
-      vc.reset(new cmCTestVC(this->CTest, ofs));
+      vc = cm::make_unique<cmCTestVC>(this->CTest, ofs);
       break;
   }
   vc->SetCommandLineTool(this->UpdateCommand);
@@ -309,7 +310,7 @@ bool cmCTestUpdateHandler::SelectVCS()
 
   // If no update command was specified, lookup one for this VCS tool.
   if (this->UpdateCommand.empty()) {
-    const char* key = CM_NULLPTR;
+    const char* key = nullptr;
     switch (this->UpdateType) {
       case e_CVS:
         key = "CVSCommand";
diff --git a/Source/CTest/cmCTestUpdateHandler.h b/Source/CTest/cmCTestUpdateHandler.h
index 0cd284421..0f51d3f3e 100644
--- a/Source/CTest/cmCTestUpdateHandler.h
+++ b/Source/CTest/cmCTestUpdateHandler.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestUpdateHandler_h
 #define cmCTestUpdateHandler_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTestGenericHandler.h"
 
@@ -23,7 +23,7 @@ public:
   /*
    * The main entry point for this class
    */
-  int ProcessHandler() CM_OVERRIDE;
+  int ProcessHandler() override;
 
   cmCTestUpdateHandler();
 
@@ -42,7 +42,7 @@ public:
   /**
    * Initialize handler
    */
-  void Initialize() CM_OVERRIDE;
+  void Initialize() override;
 
 private:
   // Some structures needed for update
diff --git a/Source/CTest/cmCTestUploadCommand.cxx b/Source/CTest/cmCTestUploadCommand.cxx
index 717117a5f..d85f35f6f 100644
--- a/Source/CTest/cmCTestUploadCommand.cxx
+++ b/Source/CTest/cmCTestUploadCommand.cxx
@@ -18,7 +18,7 @@ cmCTestGenericHandler* cmCTestUploadCommand::InitializeHandler()
     this->CTest->GetInitializedHandler("upload");
   if (!handler) {
     this->SetError("internal CTest error. Cannot instantiate upload handler");
-    return CM_NULLPTR;
+    return nullptr;
   }
   static_cast<cmCTestUploadHandler*>(handler)->SetFiles(this->Files);
 
diff --git a/Source/CTest/cmCTestUploadCommand.h b/Source/CTest/cmCTestUploadCommand.h
index 6e721796a..61bf1cc58 100644
--- a/Source/CTest/cmCTestUploadCommand.h
+++ b/Source/CTest/cmCTestUploadCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestUploadCommand_h
 #define cmCTestUploadCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTest.h"
 #include "cmCTestHandlerCommand.h"
@@ -27,7 +27,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmCTestUploadCommand* ni = new cmCTestUploadCommand;
     ni->CTest = this->CTest;
@@ -38,15 +38,15 @@ public:
   /**
    * The name of the command as specified in CMakeList.txt.
    */
-  std::string GetName() const CM_OVERRIDE { return "ctest_upload"; }
+  std::string GetName() const override { return "ctest_upload"; }
 
   typedef cmCTestHandlerCommand Superclass;
 
 protected:
-  cmCTestGenericHandler* InitializeHandler() CM_OVERRIDE;
+  cmCTestGenericHandler* InitializeHandler() override;
 
-  bool CheckArgumentKeyword(std::string const& arg) CM_OVERRIDE;
-  bool CheckArgumentValue(std::string const& arg) CM_OVERRIDE;
+  bool CheckArgumentKeyword(std::string const& arg) override;
+  bool CheckArgumentValue(std::string const& arg) override;
 
   enum
   {
diff --git a/Source/CTest/cmCTestUploadHandler.cxx b/Source/CTest/cmCTestUploadHandler.cxx
index 05a39840d..59a5de484 100644
--- a/Source/CTest/cmCTestUploadHandler.cxx
+++ b/Source/CTest/cmCTestUploadHandler.cxx
@@ -7,7 +7,6 @@
 #include "cmXMLWriter.h"
 
 #include <ostream>
-#include <set>
 #include <string>
 
 cmCTestUploadHandler::cmCTestUploadHandler()
@@ -37,7 +36,6 @@ int cmCTestUploadHandler::ProcessHandler()
   }
   std::string buildname =
     cmCTest::SafeBuildIdField(this->CTest->GetCTestConfiguration("BuildName"));
-  cmCTest::SetOfStrings::const_iterator it;
 
   cmXMLWriter xml(ofs);
   xml.StartDocument();
@@ -55,14 +53,14 @@ int cmCTestUploadHandler::ProcessHandler()
   this->CTest->AddSiteProperties(xml);
   xml.StartElement("Upload");
 
-  for (it = this->Files.begin(); it != this->Files.end(); it++) {
+  for (std::string const& file : this->Files) {
     cmCTestOptionalLog(this->CTest, OUTPUT,
-                       "\tUpload file: " << *it << std::endl, this->Quiet);
+                       "\tUpload file: " << file << std::endl, this->Quiet);
     xml.StartElement("File");
-    xml.Attribute("filename", *it);
+    xml.Attribute("filename", file);
     xml.StartElement("Content");
     xml.Attribute("encoding", "base64");
-    xml.Content(this->CTest->Base64EncodeFile(*it));
+    xml.Content(this->CTest->Base64EncodeFile(file));
     xml.EndElement(); // Content
     xml.EndElement(); // File
   }
diff --git a/Source/CTest/cmCTestUploadHandler.h b/Source/CTest/cmCTestUploadHandler.h
index 1e8d3c801..ff5057418 100644
--- a/Source/CTest/cmCTestUploadHandler.h
+++ b/Source/CTest/cmCTestUploadHandler.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestUploadHandler_h
 #define cmCTestUploadHandler_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCTest.h"
 #include "cmCTestGenericHandler.h"
@@ -20,14 +20,14 @@ public:
   typedef cmCTestGenericHandler Superclass;
 
   cmCTestUploadHandler();
-  ~cmCTestUploadHandler() CM_OVERRIDE {}
+  ~cmCTestUploadHandler() override {}
 
   /*
    * The main entry point for this class
    */
-  int ProcessHandler() CM_OVERRIDE;
+  int ProcessHandler() override;
 
-  void Initialize() CM_OVERRIDE;
+  void Initialize() override;
 
   /** Specify a set of files to submit.  */
   void SetFiles(cmCTest::SetOfStrings const& files);
diff --git a/Source/CTest/cmCTestVC.cxx b/Source/CTest/cmCTestVC.cxx
index fb2742e08..fd7f37ac8 100644
--- a/Source/CTest/cmCTestVC.cxx
+++ b/Source/CTest/cmCTestVC.cxx
@@ -56,11 +56,11 @@ bool cmCTestVC::InitialCheckout(const char* command)
   // Construct the initial checkout command line.
   std::vector<std::string> args = cmSystemTools::ParseArguments(command);
   std::vector<char const*> vc_co;
-  for (std::vector<std::string>::const_iterator ai = args.begin();
-       ai != args.end(); ++ai) {
-    vc_co.push_back(ai->c_str());
+  vc_co.reserve(args.size() + 1);
+  for (std::string const& arg : args) {
+    vc_co.push_back(arg.c_str());
   }
-  vc_co.push_back(CM_NULLPTR);
+  vc_co.push_back(nullptr);
 
   // Run the initial checkout command and log its output.
   this->Log << "--- Begin Initial Checkout ---\n";
@@ -113,7 +113,7 @@ bool cmCTestVC::RunUpdateCommand(char const* const* cmd, OutputParser* out,
   }
 
   // Run the command.
-  return this->RunChild(cmd, out, err, CM_NULLPTR, encoding);
+  return this->RunChild(cmd, out, err, nullptr, encoding);
 }
 
 std::string cmCTestVC::GetNightlyTime()
diff --git a/Source/CTest/cmCTestVC.h b/Source/CTest/cmCTestVC.h
index 6400bcda3..69a3bf023 100644
--- a/Source/CTest/cmCTestVC.h
+++ b/Source/CTest/cmCTestVC.h
@@ -3,7 +3,7 @@
 #ifndef cmCTestVC_h
 #define cmCTestVC_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <string>
@@ -100,8 +100,8 @@ protected:
     Revision const* PriorRev;
     File()
       : Status(PathUpdated)
-      , Rev(CM_NULLPTR)
-      , PriorRev(CM_NULLPTR)
+      , Rev(nullptr)
+      , PriorRev(nullptr)
     {
     }
     File(PathStatus status, Revision const* rev, Revision const* priorRev)
@@ -117,12 +117,12 @@ protected:
 
   /** Run a command line and send output to given parsers.  */
   bool RunChild(char const* const* cmd, OutputParser* out, OutputParser* err,
-                const char* workDir = CM_NULLPTR,
+                const char* workDir = nullptr,
                 Encoding encoding = cmProcessOutput::Auto);
 
   /** Run VC update command line and send output to given parsers.  */
   bool RunUpdateCommand(char const* const* cmd, OutputParser* out,
-                        OutputParser* err = CM_NULLPTR,
+                        OutputParser* err = nullptr,
                         Encoding encoding = cmProcessOutput::Auto);
 
   /** Write xml element for one file.  */
diff --git a/Source/CTest/cmParseBlanketJSCoverage.cxx b/Source/CTest/cmParseBlanketJSCoverage.cxx
index 83a7b75eb..308e6f7a3 100644
--- a/Source/CTest/cmParseBlanketJSCoverage.cxx
+++ b/Source/CTest/cmParseBlanketJSCoverage.cxx
@@ -112,17 +112,15 @@ cmParseBlanketJSCoverage::cmParseBlanketJSCoverage(
 
 bool cmParseBlanketJSCoverage::LoadCoverageData(std::vector<std::string> files)
 {
-  size_t i = 0;
-  std::string path;
   cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                      "Found " << files.size() << " Files" << std::endl,
                      this->Coverage.Quiet);
-  for (i = 0; i < files.size(); i++) {
+  for (std::string const& file : files) {
     cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
-                       "Reading JSON File " << files[i] << std::endl,
+                       "Reading JSON File " << file << std::endl,
                        this->Coverage.Quiet);
 
-    if (!this->ReadJSONFile(files[i])) {
+    if (!this->ReadJSONFile(file)) {
       return false;
     }
   }
diff --git a/Source/CTest/cmParseCacheCoverage.cxx b/Source/CTest/cmParseCacheCoverage.cxx
index 629010cf1..4cd6588be 100644
--- a/Source/CTest/cmParseCacheCoverage.cxx
+++ b/Source/CTest/cmParseCacheCoverage.cxx
@@ -53,10 +53,8 @@ void cmParseCacheCoverage::RemoveUnCoveredFiles()
   while (ci != this->Coverage.TotalCoverage.end()) {
     cmCTestCoverageHandlerContainer::SingleFileCoverageVector& v = ci->second;
     bool nothing = true;
-    for (cmCTestCoverageHandlerContainer::SingleFileCoverageVector::iterator
-           i = v.begin();
-         i != v.end(); ++i) {
-      if (*i > 0) {
+    for (int i : v) {
+      if (i > 0) {
         nothing = false;
         break;
       }
@@ -148,7 +146,7 @@ bool cmParseCacheCoverage::ReadCMCovFile(const char* file)
         cmCTestLog(this->CTest, ERROR_MESSAGE,
                    "Could not find mumps file for routine: " << routine
                                                              << "\n");
-        filepath = "";
+        filepath.clear();
         continue; // move to next line
       }
     }
@@ -156,8 +154,8 @@ bool cmParseCacheCoverage::ReadCMCovFile(const char* file)
     else {
       // Totals in arg 0 marks the end of a routine
       if (separateLine[0].substr(0, 6) == "Totals") {
-        routine = ""; // at the end of this routine
-        filepath = "";
+        routine.clear(); // at the end of this routine
+        filepath.clear();
         continue; // move to next line
       }
     }
diff --git a/Source/CTest/cmParseCacheCoverage.h b/Source/CTest/cmParseCacheCoverage.h
index 005d27258..081f5fa13 100644
--- a/Source/CTest/cmParseCacheCoverage.h
+++ b/Source/CTest/cmParseCacheCoverage.h
@@ -3,7 +3,7 @@
 #ifndef cmParseCacheCoverage_h
 #define cmParseCacheCoverage_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmParseMumpsCoverage.h"
 
@@ -26,7 +26,7 @@ public:
 
 protected:
   // implement virtual from parent
-  bool LoadCoverageData(const char* dir) CM_OVERRIDE;
+  bool LoadCoverageData(const char* dir) override;
   // remove files with no coverage
   void RemoveUnCoveredFiles();
   // Read a single mcov file
diff --git a/Source/CTest/cmParseCoberturaCoverage.cxx b/Source/CTest/cmParseCoberturaCoverage.cxx
index ba55cd7b2..61ce7d48e 100644
--- a/Source/CTest/cmParseCoberturaCoverage.cxx
+++ b/Source/CTest/cmParseCoberturaCoverage.cxx
@@ -5,7 +5,6 @@
 #include "cmSystemTools.h"
 #include "cmXMLParser.h"
 
-#include "cmConfigure.h"
 #include "cmsys/FStream.hxx"
 #include <stdlib.h>
 #include <string.h>
@@ -22,13 +21,13 @@ public:
     this->SkipThisClass = false;
     this->FilePaths.push_back(this->Coverage.SourceDir);
     this->FilePaths.push_back(this->Coverage.BinaryDir);
-    this->CurFileName = "";
+    this->CurFileName.clear();
   }
 
-  ~XMLParser() CM_OVERRIDE {}
+  ~XMLParser() override {}
 
 protected:
-  void EndElement(const std::string& name) CM_OVERRIDE
+  void EndElement(const std::string& name) override
   {
     if (name == "source") {
       this->InSource = false;
@@ -39,7 +38,7 @@ protected:
     }
   }
 
-  void CharacterDataHandler(const char* data, int length) CM_OVERRIDE
+  void CharacterDataHandler(const char* data, int length) override
   {
     std::string tmp;
     tmp.insert(0, data, length);
@@ -51,7 +50,7 @@ protected:
     }
   }
 
-  void StartElement(const std::string& name, const char** atts) CM_OVERRIDE
+  void StartElement(const std::string& name, const char** atts) override
   {
     std::string FoundSource;
     std::string finalpath;
@@ -68,22 +67,22 @@ protected:
                                               << std::endl,
                              this->Coverage.Quiet);
           std::string filename = atts[tagCount + 1];
-          this->CurFileName = "";
+          this->CurFileName.clear();
 
           // Check if this is an absolute path that falls within our
           // source or binary directories.
-          for (size_t i = 0; i < FilePaths.size(); i++) {
-            if (filename.find(FilePaths[i]) == 0) {
+          for (std::string const& filePath : FilePaths) {
+            if (filename.find(filePath) == 0) {
               this->CurFileName = filename;
               break;
             }
           }
 
-          if (this->CurFileName == "") {
+          if (this->CurFileName.empty()) {
             // Check if this is a path that is relative to our source or
             // binary directories.
-            for (size_t i = 0; i < FilePaths.size(); i++) {
-              finalpath = FilePaths[i] + "/" + filename;
+            for (std::string const& filePath : FilePaths) {
+              finalpath = filePath + "/" + filename;
               if (cmSystemTools::FileExists(finalpath.c_str())) {
                 this->CurFileName = finalpath;
                 break;
@@ -92,7 +91,7 @@ protected:
           }
 
           cmsys::ifstream fin(this->CurFileName.c_str());
-          if (this->CurFileName == "" || !fin) {
+          if (this->CurFileName.empty() || !fin) {
             this->CurFileName =
               this->Coverage.BinaryDir + "/" + atts[tagCount + 1];
             fin.open(this->CurFileName.c_str());
diff --git a/Source/CTest/cmParseDelphiCoverage.cxx b/Source/CTest/cmParseDelphiCoverage.cxx
index 4b781a6db..6d82cb2e7 100644
--- a/Source/CTest/cmParseDelphiCoverage.cxx
+++ b/Source/CTest/cmParseDelphiCoverage.cxx
@@ -71,7 +71,8 @@ public:
         }
       }
       // Based up what was found, add a line to the coverageVector
-      if (!beginSet.empty() && line != "" && !blockComFlag && !lineComFlag) {
+      if (!beginSet.empty() && !line.empty() && !blockComFlag &&
+          !lineComFlag) {
         coverageVector.push_back(0);
       } else {
         coverageVector.push_back(-1);
diff --git a/Source/CTest/cmParseGTMCoverage.cxx b/Source/CTest/cmParseGTMCoverage.cxx
index e4ee699c4..9948eded2 100644
--- a/Source/CTest/cmParseGTMCoverage.cxx
+++ b/Source/CTest/cmParseGTMCoverage.cxx
@@ -182,7 +182,7 @@ bool cmParseGTMCoverage::ParseMCOVLine(std::string const& line,
       // save the argument into the argument vector
       args.push_back(arg);
       // start on a new argument
-      arg = "";
+      arg.clear();
       // if we are at the end of the ), then finish while loop
       if (cur == ')') {
         done = true;
@@ -233,8 +233,8 @@ bool cmParseGTMCoverage::ParseMCOVLine(std::string const& line,
     // To avoid double counting of line 0 of each entry point,
     // Don't count the lines that do not give an explicit line
     // number.
-    routine = "";
-    function = "";
+    routine.clear();
+    function.clear();
   } else {
     // this is the format for this line
     // ^COVERAGE("%RSEL","SRC",count)
diff --git a/Source/CTest/cmParseGTMCoverage.h b/Source/CTest/cmParseGTMCoverage.h
index c4949d416..13afbbc26 100644
--- a/Source/CTest/cmParseGTMCoverage.h
+++ b/Source/CTest/cmParseGTMCoverage.h
@@ -3,7 +3,7 @@
 #ifndef cmParseGTMCoverage_h
 #define cmParseGTMCoverage_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmParseMumpsCoverage.h"
 
@@ -25,7 +25,7 @@ public:
 
 protected:
   // implement virtual from parent
-  bool LoadCoverageData(const char* dir) CM_OVERRIDE;
+  bool LoadCoverageData(const char* dir) override;
   // Read a single mcov file
   bool ReadMCovFile(const char* f);
   // find out what line in a mumps file (filepath) the given entry point
diff --git a/Source/CTest/cmParseJacocoCoverage.cxx b/Source/CTest/cmParseJacocoCoverage.cxx
index d15864a79..7acb5ca3f 100644
--- a/Source/CTest/cmParseJacocoCoverage.cxx
+++ b/Source/CTest/cmParseJacocoCoverage.cxx
@@ -1,7 +1,5 @@
 #include "cmParseJacocoCoverage.h"
 
-#include "cmConfigure.h"
-
 #include "cmCTest.h"
 #include "cmCTestCoverageHandler.h"
 #include "cmSystemTools.h"
@@ -20,25 +18,25 @@ public:
     : CTest(ctest)
     , Coverage(cont)
   {
-    this->FilePath = "";
-    this->PackagePath = "";
-    this->PackageName = "";
+    this->FilePath.clear();
+    this->PackagePath.clear();
+    this->PackageName.clear();
   }
 
-  ~XMLParser() CM_OVERRIDE {}
+  ~XMLParser() override {}
 
 protected:
-  void EndElement(const std::string& /*name*/) CM_OVERRIDE {}
+  void EndElement(const std::string& /*name*/) override {}
 
-  void StartElement(const std::string& name, const char** atts) CM_OVERRIDE
+  void StartElement(const std::string& name, const char** atts) override
   {
     if (name == "package") {
       this->PackageName = atts[1];
-      this->PackagePath = "";
+      this->PackagePath.clear();
     } else if (name == "sourcefile") {
       std::string fileName = atts[1];
 
-      if (this->PackagePath == "") {
+      if (this->PackagePath.empty()) {
         if (!this->FindPackagePath(fileName)) {
           cmCTestLog(this->CTest, ERROR_MESSAGE, "Cannot find file: "
                        << this->PackageName << "/" << fileName << std::endl);
@@ -121,9 +119,8 @@ protected:
     }
 
     // Check if any of the locations found match our package.
-    for (std::vector<std::string>::const_iterator fi = files.begin();
-         fi != files.end(); ++fi) {
-      std::string dir = cmsys::SystemTools::GetParentDirectory(*fi);
+    for (std::string const& f : files) {
+      std::string dir = cmsys::SystemTools::GetParentDirectory(f);
       if (cmsys::SystemTools::StringEndsWith(dir, this->PackageName.c_str())) {
         cmCTestOptionalLog(this->CTest, HANDLER_VERBOSE_OUTPUT,
                            "Found package directory for " << fileName << ": "
diff --git a/Source/CTest/cmParseMumpsCoverage.cxx b/Source/CTest/cmParseMumpsCoverage.cxx
index eb29f55c0..1419743fc 100644
--- a/Source/CTest/cmParseMumpsCoverage.cxx
+++ b/Source/CTest/cmParseMumpsCoverage.cxx
@@ -4,13 +4,11 @@
 #include "cmCTestCoverageHandler.h"
 #include "cmSystemTools.h"
 
-#include "cmConfigure.h"
 #include "cmsys/FStream.hxx"
 #include "cmsys/Glob.hxx"
 #include <map>
 #include <string>
 #include <utility>
-#include <vector>
 
 cmParseMumpsCoverage::cmParseMumpsCoverage(
   cmCTestCoverageHandlerContainer& cont, cmCTest* ctest)
@@ -113,14 +111,12 @@ bool cmParseMumpsCoverage::LoadPackages(const char* d)
   std::string pat = d;
   pat += "/*.m";
   glob.FindFiles(pat);
-  std::vector<std::string>& files = glob.GetFiles();
-  std::vector<std::string>::iterator fileIt;
-  for (fileIt = files.begin(); fileIt != files.end(); ++fileIt) {
-    std::string name = cmSystemTools::GetFilenameName(*fileIt);
-    this->RoutineToDirectory[name.substr(0, name.size() - 2)] = *fileIt;
+  for (std::string& file : glob.GetFiles()) {
+    std::string name = cmSystemTools::GetFilenameName(file);
+    this->RoutineToDirectory[name.substr(0, name.size() - 2)] = file;
     // initialze each file, this is left out until CDash is fixed
     // to handle large numbers of files
-    this->InitializeMumpsFile(*fileIt);
+    this->InitializeMumpsFile(file);
   }
   return true;
 }
@@ -135,8 +131,8 @@ bool cmParseMumpsCoverage::FindMumpsFile(std::string const& routine,
     return true;
   }
   // try some alternate names
-  const char* tryname[] = { "GUX", "GTM", "ONT", CM_NULLPTR };
-  for (int k = 0; tryname[k] != CM_NULLPTR; k++) {
+  const char* tryname[] = { "GUX", "GTM", "ONT", nullptr };
+  for (int k = 0; tryname[k] != nullptr; k++) {
     std::string routine2 = routine + tryname[k];
     i = this->RoutineToDirectory.find(routine2);
     if (i != this->RoutineToDirectory.end()) {
diff --git a/Source/CTest/cmProcess.cxx b/Source/CTest/cmProcess.cxx
index f4ec6da29..f3c191b8a 100644
--- a/Source/CTest/cmProcess.cxx
+++ b/Source/CTest/cmProcess.cxx
@@ -2,14 +2,13 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmProcess.h"
 
-#include "cmConfigure.h"
 #include "cmProcessOutput.h"
 #include "cmSystemTools.h"
 #include <iostream>
 
 cmProcess::cmProcess()
 {
-  this->Process = CM_NULLPTR;
+  this->Process = nullptr;
   this->Timeout = 0;
   this->TotalTime = 0;
   this->ExitValue = 0;
@@ -41,11 +40,10 @@ bool cmProcess::StartProcess()
   // put the command as arg0
   this->ProcessArgs.push_back(this->Command.c_str());
   // now put the command arguments in
-  for (std::vector<std::string>::iterator i = this->Arguments.begin();
-       i != this->Arguments.end(); ++i) {
-    this->ProcessArgs.push_back(i->c_str());
+  for (std::string const& arg : this->Arguments) {
+    this->ProcessArgs.push_back(arg.c_str());
   }
-  this->ProcessArgs.push_back(CM_NULLPTR); // null terminate the list
+  this->ProcessArgs.push_back(nullptr); // null terminate the list
   this->Process = cmsysProcess_New();
   cmsysProcess_SetCommand(this->Process, &*this->ProcessArgs.begin());
   if (!this->WorkingDirectory.empty()) {
@@ -240,3 +238,8 @@ int cmProcess::GetExitException()
 {
   return cmsysProcess_GetExitException(this->Process);
 }
+
+std::string cmProcess::GetExitExceptionString()
+{
+  return cmsysProcess_GetExceptionString(this->Process);
+}
diff --git a/Source/CTest/cmProcess.h b/Source/CTest/cmProcess.h
index 86e905aca..dfb02fe0d 100644
--- a/Source/CTest/cmProcess.h
+++ b/Source/CTest/cmProcess.h
@@ -38,6 +38,7 @@ public:
   int GetExitValue() { return this->ExitValue; }
   double GetTotalTime() { return this->TotalTime; }
   int GetExitException();
+  std::string GetExitExceptionString();
   /**
    * Read one line of output but block for no more than timeout.
    * Returns:
diff --git a/Source/Checks/cm_cxx_attribute_fallthrough.cxx b/Source/Checks/cm_cxx_attribute_fallthrough.cxx
index df43625a4..50605b70a 100644
--- a/Source/Checks/cm_cxx_attribute_fallthrough.cxx
+++ b/Source/Checks/cm_cxx_attribute_fallthrough.cxx
@@ -1,4 +1,4 @@
-int main(int argc, char* argv[])
+int main(int argc, char* [])
 {
   int i = 3;
   switch (argc) {
diff --git a/Source/Checks/cm_cxx_auto_ptr.cxx b/Source/Checks/cm_cxx_auto_ptr.cxx
deleted file mode 100644
index d3100fdc8..000000000
--- a/Source/Checks/cm_cxx_auto_ptr.cxx
+++ /dev/null
@@ -1,18 +0,0 @@
-#include <memory>
-
-std::auto_ptr<int> get_auto_ptr()
-{
-  std::auto_ptr<int> ptr;
-  ptr = std::auto_ptr<int>(new int(0));
-  return ptr;
-}
-
-int use_auto_ptr(std::auto_ptr<int> ptr)
-{
-  return *ptr;
-}
-
-int main()
-{
-  return use_auto_ptr(get_auto_ptr());
-}
diff --git a/Source/Checks/cm_cxx_eq_delete.cxx b/Source/Checks/cm_cxx_eq_delete.cxx
deleted file mode 100644
index 809e4cfcf..000000000
--- a/Source/Checks/cm_cxx_eq_delete.cxx
+++ /dev/null
@@ -1,14 +0,0 @@
-struct Foo
-{
-  Foo() {}
-  ~Foo() {}
-  Foo(Foo const&) = delete;
-  Foo& operator=(Foo const&) = delete;
-  int test() const { return 0; }
-};
-
-int main()
-{
-  Foo const foo;
-  return foo.test();
-}
diff --git a/Source/Checks/cm_cxx_fallthrough.cxx b/Source/Checks/cm_cxx_fallthrough.cxx
index 7b35a5f29..2825bed1e 100644
--- a/Source/Checks/cm_cxx_fallthrough.cxx
+++ b/Source/Checks/cm_cxx_fallthrough.cxx
@@ -1,4 +1,4 @@
-int main(int argc, char* argv[])
+int main(int argc, char* [])
 {
   int i = 3;
   switch (argc) {
diff --git a/Source/Checks/cm_cxx_features.cmake b/Source/Checks/cm_cxx_features.cmake
index 3b0802579..a30a5e690 100644
--- a/Source/Checks/cm_cxx_features.cmake
+++ b/Source/Checks/cm_cxx_features.cmake
@@ -14,8 +14,11 @@ function(cm_check_cxx_feature name)
       CMAKE_FLAGS ${maybe_cxx_standard}
       OUTPUT_VARIABLE OUTPUT
       )
+    set(check_output "${OUTPUT}")
     # Filter out MSBuild output that looks like a warning.
-    string(REGEX REPLACE " +0 Warning\\(s\\)" "" check_output "${OUTPUT}")
+    string(REGEX REPLACE " +0 Warning\\(s\\)" "" check_output "${check_output}")
+    # Filter out warnings caused by user flags.
+    string(REGEX REPLACE "[^\n]*warning:[^\n]*-Winvalid-command-line-argument[^\n]*" "" check_output "${check_output}")
     # If using the feature causes warnings, treat it as broken/unavailable.
     if(check_output MATCHES "[Ww]arning")
       set(CMake_HAVE_CXX_${FEATURE} OFF CACHE INTERNAL "TRY_COMPILE" FORCE)
@@ -38,8 +41,6 @@ function(cm_check_cxx_feature name)
   endif()
 endfunction()
 
-cm_check_cxx_feature(auto_ptr)
-cm_check_cxx_feature(eq_delete)
 cm_check_cxx_feature(fallthrough)
 if(NOT CMake_HAVE_CXX_FALLTHROUGH)
   cm_check_cxx_feature(gnu_fallthrough)
@@ -51,8 +52,4 @@ cm_check_cxx_feature(make_unique)
 if(CMake_HAVE_CXX_MAKE_UNIQUE)
   set(CMake_HAVE_CXX_UNIQUE_PTR 1)
 endif()
-cm_check_cxx_feature(nullptr)
-cm_check_cxx_feature(override)
 cm_check_cxx_feature(unique_ptr)
-cm_check_cxx_feature(unordered_map)
-cm_check_cxx_feature(unordered_set)
diff --git a/Source/Checks/cm_cxx_gnu_fallthrough.cxx b/Source/Checks/cm_cxx_gnu_fallthrough.cxx
index 602109405..ebc15f431 100644
--- a/Source/Checks/cm_cxx_gnu_fallthrough.cxx
+++ b/Source/Checks/cm_cxx_gnu_fallthrough.cxx
@@ -1,4 +1,4 @@
-int main(int argc, char* argv[])
+int main(int argc, char* [])
 {
   int i = 3;
   switch (argc) {
diff --git a/Source/Checks/cm_cxx_nullptr.cxx b/Source/Checks/cm_cxx_nullptr.cxx
deleted file mode 100644
index 500684aee..000000000
--- a/Source/Checks/cm_cxx_nullptr.cxx
+++ /dev/null
@@ -1,14 +0,0 @@
-int test(int)
-{
-  return -1;
-}
-
-int test(int*)
-{
-  return 0;
-}
-
-int main()
-{
-  return test(nullptr);
-}
diff --git a/Source/Checks/cm_cxx_override.cxx b/Source/Checks/cm_cxx_override.cxx
deleted file mode 100644
index 5a33fbb78..000000000
--- a/Source/Checks/cm_cxx_override.cxx
+++ /dev/null
@@ -1,24 +0,0 @@
-struct Foo
-{
-  Foo() {}
-  virtual ~Foo() {}
-  virtual int test() const = 0;
-};
-
-struct Bar : Foo
-{
-  Bar() {}
-  ~Bar() override {}
-  int test() const override { return 0; }
-};
-
-int test(Foo const& foo)
-{
-  return foo.test();
-}
-
-int main()
-{
-  Bar const bar;
-  return test(bar);
-}
diff --git a/Source/Checks/cm_cxx_unordered_map.cxx b/Source/Checks/cm_cxx_unordered_map.cxx
deleted file mode 100644
index be3de252b..000000000
--- a/Source/Checks/cm_cxx_unordered_map.cxx
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <unordered_map>
-int main()
-{
-  std::unordered_map<int, int> map;
-  map[0] = 0;
-  return 0;
-}
diff --git a/Source/Checks/cm_cxx_unordered_set.cxx b/Source/Checks/cm_cxx_unordered_set.cxx
deleted file mode 100644
index de4bb7765..000000000
--- a/Source/Checks/cm_cxx_unordered_set.cxx
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <unordered_set>
-int main()
-{
-  std::unordered_set<int> set;
-  set.insert(0);
-  return 0;
-}
diff --git a/Source/CursesDialog/CMakeLists.txt b/Source/CursesDialog/CMakeLists.txt
index c5ac1f1a6..6023c83eb 100644
--- a/Source/CursesDialog/CMakeLists.txt
+++ b/Source/CursesDialog/CMakeLists.txt
@@ -17,10 +17,6 @@ set( CURSES_SRCS
               CursesDialog/ccmake
    )
 
-if( NOT CMAKE_USE_SYSTEM_FORM )
-  include_directories(${CMake_SOURCE_DIR}/Source/CursesDialog/form
-                      ${CMake_BINARY_DIR}/Source/CursesDialog/form)
-endif()
 include_directories(${CURSES_INCLUDE_PATH})
 
 
diff --git a/Source/CursesDialog/ccmake.cxx b/Source/CursesDialog/ccmake.cxx
index 28a0e95b9..97d5579c2 100644
--- a/Source/CursesDialog/ccmake.cxx
+++ b/Source/CursesDialog/ccmake.cxx
@@ -1,6 +1,5 @@
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
-#include "cmConfigure.h"
 
 #include "cmCursesForm.h"
 #include "cmCursesMainForm.h"
@@ -18,30 +17,29 @@
 #include <vector>
 
 static const char* cmDocumentationName[][2] = {
-  { CM_NULLPTR, "  ccmake - Curses Interface for CMake." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  ccmake - Curses Interface for CMake." },
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationUsage[][2] = {
-  { CM_NULLPTR, "  ccmake <path-to-source>\n"
-                "  ccmake <path-to-existing-build>" },
-  { CM_NULLPTR,
-    "Specify a source directory to (re-)generate a build system for "
-    "it in the current working directory.  Specify an existing build "
-    "directory to re-generate its build system." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  ccmake <path-to-source>\n"
+             "  ccmake <path-to-existing-build>" },
+  { nullptr, "Specify a source directory to (re-)generate a build system for "
+             "it in the current working directory.  Specify an existing build "
+             "directory to re-generate its build system." },
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationUsageNote[][2] = {
-  { CM_NULLPTR, "Run 'ccmake --help' for more information." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "Run 'ccmake --help' for more information." },
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationOptions[]
                                          [2] = { CMAKE_STANDARD_OPTIONS_TABLE,
-                                                 { CM_NULLPTR, CM_NULLPTR } };
+                                                 { nullptr, nullptr } };
 
-cmCursesForm* cmCursesForm::CurrentForm = CM_NULLPTR;
+cmCursesForm* cmCursesForm::CurrentForm = nullptr;
 
 extern "C" {
 
@@ -169,7 +167,7 @@ int main(int argc, char const* const* argv)
   touchwin(stdscr);
   endwin();
   delete cmCursesForm::CurrentForm;
-  cmCursesForm::CurrentForm = CM_NULLPTR;
+  cmCursesForm::CurrentForm = nullptr;
 
   std::cout << std::endl << std::endl;
 
diff --git a/Source/CursesDialog/cmCursesBoolWidget.h b/Source/CursesDialog/cmCursesBoolWidget.h
index 90bcc2209..cdb9478e1 100644
--- a/Source/CursesDialog/cmCursesBoolWidget.h
+++ b/Source/CursesDialog/cmCursesBoolWidget.h
@@ -3,7 +3,7 @@
 #ifndef cmCursesBoolWidget_h
 #define cmCursesBoolWidget_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCursesStandardIncludes.h"
 #include "cmCursesWidget.h"
@@ -21,7 +21,7 @@ public:
   // Handle user input. Called by the container of this widget
   // when this widget has focus. Returns true if the input was
   // handled.
-  bool HandleInput(int& key, cmCursesMainForm* fm, WINDOW* w) CM_OVERRIDE;
+  bool HandleInput(int& key, cmCursesMainForm* fm, WINDOW* w) override;
 
   // Description:
   // Set/Get the value (on/off).
diff --git a/Source/CursesDialog/cmCursesCacheEntryComposite.cxx b/Source/CursesDialog/cmCursesCacheEntryComposite.cxx
index d071c9178..e7ed09717 100644
--- a/Source/CursesDialog/cmCursesCacheEntryComposite.cxx
+++ b/Source/CursesDialog/cmCursesCacheEntryComposite.cxx
@@ -25,7 +25,7 @@ cmCursesCacheEntryComposite::cmCursesCacheEntryComposite(
 {
   this->Label = new cmCursesLabelWidget(this->LabelWidth, 1, 1, 1, key);
   this->IsNewLabel = new cmCursesLabelWidget(1, 1, 1, 1, " ");
-  this->Entry = CM_NULLPTR;
+  this->Entry = nullptr;
   this->Entry = new cmCursesStringWidget(this->EntryWidth, 1, 1, 1);
 }
 
@@ -43,7 +43,7 @@ cmCursesCacheEntryComposite::cmCursesCacheEntryComposite(
     this->IsNewLabel = new cmCursesLabelWidget(1, 1, 1, 1, " ");
   }
 
-  this->Entry = CM_NULLPTR;
+  this->Entry = nullptr;
   const char* value = cm->GetState()->GetCacheEntryValue(key);
   assert(value);
   switch (cm->GetState()->GetCacheEntryType(key)) {
@@ -72,9 +72,8 @@ cmCursesCacheEntryComposite::cmCursesCacheEntryComposite(
         this->Entry = ow;
         std::vector<std::string> options;
         cmSystemTools::ExpandListArgument(stringsProp, options);
-        for (std::vector<std::string>::iterator si = options.begin();
-             si != options.end(); ++si) {
-          ow->AddOption(*si);
+        for (auto const& opt : options) {
+          ow->AddOption(opt);
         }
         ow->SetOption(value);
       } else {
@@ -104,5 +103,5 @@ const char* cmCursesCacheEntryComposite::GetValue()
   if (this->Label) {
     return this->Label->GetValue();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
diff --git a/Source/CursesDialog/cmCursesCacheEntryComposite.h b/Source/CursesDialog/cmCursesCacheEntryComposite.h
index 3c500785d..54b2f1fd1 100644
--- a/Source/CursesDialog/cmCursesCacheEntryComposite.h
+++ b/Source/CursesDialog/cmCursesCacheEntryComposite.h
@@ -3,7 +3,7 @@
 #ifndef cmCursesCacheEntryComposite_h
 #define cmCursesCacheEntryComposite_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
diff --git a/Source/CursesDialog/cmCursesDummyWidget.h b/Source/CursesDialog/cmCursesDummyWidget.h
index d9bb6babc..c509ae773 100644
--- a/Source/CursesDialog/cmCursesDummyWidget.h
+++ b/Source/CursesDialog/cmCursesDummyWidget.h
@@ -3,7 +3,7 @@
 #ifndef cmCursesDummyWidget_h
 #define cmCursesDummyWidget_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCursesStandardIncludes.h"
 #include "cmCursesWidget.h"
@@ -21,7 +21,7 @@ public:
   // Handle user input. Called by the container of this widget
   // when this widget has focus. Returns true if the input was
   // handled.
-  bool HandleInput(int& key, cmCursesMainForm* fm, WINDOW* w) CM_OVERRIDE;
+  bool HandleInput(int& key, cmCursesMainForm* fm, WINDOW* w) override;
 };
 
 #endif // cmCursesDummyWidget_h
diff --git a/Source/CursesDialog/cmCursesFilePathWidget.h b/Source/CursesDialog/cmCursesFilePathWidget.h
index 6ad535b99..0a304023e 100644
--- a/Source/CursesDialog/cmCursesFilePathWidget.h
+++ b/Source/CursesDialog/cmCursesFilePathWidget.h
@@ -3,7 +3,7 @@
 #ifndef cmCursesFilePathWidget_h
 #define cmCursesFilePathWidget_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCursesPathWidget.h"
 
diff --git a/Source/CursesDialog/cmCursesForm.cxx b/Source/CursesDialog/cmCursesForm.cxx
index 06c1e9c70..bd65c4a08 100644
--- a/Source/CursesDialog/cmCursesForm.cxx
+++ b/Source/CursesDialog/cmCursesForm.cxx
@@ -7,7 +7,7 @@ bool cmCursesForm::Debug = false;
 
 cmCursesForm::cmCursesForm()
 {
-  this->Form = CM_NULLPTR;
+  this->Form = nullptr;
 }
 
 cmCursesForm::~cmCursesForm()
@@ -15,7 +15,7 @@ cmCursesForm::~cmCursesForm()
   if (this->Form) {
     unpost_form(this->Form);
     free_form(this->Form);
-    this->Form = CM_NULLPTR;
+    this->Form = nullptr;
   }
 }
 
diff --git a/Source/CursesDialog/cmCursesForm.h b/Source/CursesDialog/cmCursesForm.h
index 553105c76..249b34936 100644
--- a/Source/CursesDialog/cmCursesForm.h
+++ b/Source/CursesDialog/cmCursesForm.h
@@ -3,7 +3,7 @@
 #ifndef cmCursesForm_h
 #define cmCursesForm_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCursesStandardIncludes.h"
 
diff --git a/Source/CursesDialog/cmCursesLabelWidget.h b/Source/CursesDialog/cmCursesLabelWidget.h
index 267de7c8c..aab559b16 100644
--- a/Source/CursesDialog/cmCursesLabelWidget.h
+++ b/Source/CursesDialog/cmCursesLabelWidget.h
@@ -3,7 +3,7 @@
 #ifndef cmCursesLabelWidget_h
 #define cmCursesLabelWidget_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCursesStandardIncludes.h"
 #include "cmCursesWidget.h"
@@ -19,13 +19,13 @@ class cmCursesLabelWidget : public cmCursesWidget
 public:
   cmCursesLabelWidget(int width, int height, int left, int top,
                       const std::string& name);
-  ~cmCursesLabelWidget() CM_OVERRIDE;
+  ~cmCursesLabelWidget() override;
 
   // Description:
   // Handle user input. Called by the container of this widget
   // when this widget has focus. Returns true if the input was
   // handled
-  bool HandleInput(int& key, cmCursesMainForm* fm, WINDOW* w) CM_OVERRIDE;
+  bool HandleInput(int& key, cmCursesMainForm* fm, WINDOW* w) override;
 };
 
 #endif // cmCursesLabelWidget_h
diff --git a/Source/CursesDialog/cmCursesLongMessageForm.cxx b/Source/CursesDialog/cmCursesLongMessageForm.cxx
index 7fb065d30..9bd1c11b5 100644
--- a/Source/CursesDialog/cmCursesLongMessageForm.cxx
+++ b/Source/CursesDialog/cmCursesLongMessageForm.cxx
@@ -26,8 +26,8 @@ cmCursesLongMessageForm::cmCursesLongMessageForm(
     this->Messages += "\n\n";
   }
   this->Title = title;
-  this->Fields[0] = CM_NULLPTR;
-  this->Fields[1] = CM_NULLPTR;
+  this->Fields[0] = nullptr;
+  this->Fields[1] = nullptr;
 }
 
 cmCursesLongMessageForm::~cmCursesLongMessageForm()
@@ -105,7 +105,7 @@ void cmCursesLongMessageForm::Render(int /*left*/, int /*top*/, int /*width*/,
   if (this->Form) {
     unpost_form(this->Form);
     free_form(this->Form);
-    this->Form = CM_NULLPTR;
+    this->Form = nullptr;
   }
 
   const char* msg = this->Messages.c_str();
@@ -114,7 +114,7 @@ void cmCursesLongMessageForm::Render(int /*left*/, int /*top*/, int /*width*/,
 
   if (this->Fields[0]) {
     free_field(this->Fields[0]);
-    this->Fields[0] = CM_NULLPTR;
+    this->Fields[0] = nullptr;
   }
 
   this->Fields[0] = new_field(y - 6, x - 2, 1, 1, 0, 0);
diff --git a/Source/CursesDialog/cmCursesLongMessageForm.h b/Source/CursesDialog/cmCursesLongMessageForm.h
index cd8e0953a..2bcc15a20 100644
--- a/Source/CursesDialog/cmCursesLongMessageForm.h
+++ b/Source/CursesDialog/cmCursesLongMessageForm.h
@@ -3,7 +3,7 @@
 #ifndef cmCursesLongMessageForm_h
 #define cmCursesLongMessageForm_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCursesForm.h"
 #include "cmCursesStandardIncludes.h"
@@ -18,16 +18,16 @@ class cmCursesLongMessageForm : public cmCursesForm
 public:
   cmCursesLongMessageForm(std::vector<std::string> const& messages,
                           const char* title);
-  ~cmCursesLongMessageForm() CM_OVERRIDE;
+  ~cmCursesLongMessageForm() override;
 
   // Description:
   // Handle user input.
-  void HandleInput() CM_OVERRIDE;
+  void HandleInput() override;
 
   // Description:
   // Display form. Use a window of size width x height, starting
   // at top, left.
-  void Render(int left, int top, int width, int height) CM_OVERRIDE;
+  void Render(int left, int top, int width, int height) override;
 
   // Description:
   // This method should normally  called only by the form.
@@ -37,7 +37,7 @@ public:
   // Description:
   // This method should normally  called only by the form.
   // The only exception is during a resize.
-  void UpdateStatusBar() CM_OVERRIDE;
+  void UpdateStatusBar() override;
 
 protected:
   std::string Messages;
diff --git a/Source/CursesDialog/cmCursesMainForm.cxx b/Source/CursesDialog/cmCursesMainForm.cxx
index 026320a1f..dbd024da6 100644
--- a/Source/CursesDialog/cmCursesMainForm.cxx
+++ b/Source/CursesDialog/cmCursesMainForm.cxx
@@ -17,6 +17,7 @@
 #include "cmVersion.h"
 #include "cmake.h"
 
+#include <algorithm>
 #include <stdio.h>
 #include <string.h>
 
@@ -31,8 +32,8 @@ cmCursesMainForm::cmCursesMainForm(std::vector<std::string> const& args,
   , InitialWidth(initWidth)
 {
   this->NumberOfPages = 0;
-  this->Fields = CM_NULLPTR;
-  this->Entries = CM_NULLPTR;
+  this->Fields = nullptr;
+  this->Entries = nullptr;
   this->AdvancedMode = false;
   this->NumberOfVisibleEntries = 0;
   this->OkToGenerate = false;
@@ -59,7 +60,7 @@ cmCursesMainForm::~cmCursesMainForm()
   if (this->Form) {
     unpost_form(this->Form);
     free_form(this->Form);
-    this->Form = CM_NULLPTR;
+    this->Form = nullptr;
   }
   delete[] this->Fields;
 
@@ -70,7 +71,7 @@ cmCursesMainForm::~cmCursesMainForm()
   delete this->Entries;
   if (this->CMakeInstance) {
     delete this->CMakeInstance;
-    this->CMakeInstance = CM_NULLPTR;
+    this->CMakeInstance = nullptr;
   }
 }
 
@@ -180,7 +181,7 @@ void cmCursesMainForm::RePost()
   if (this->Form) {
     unpost_form(this->Form);
     free_form(this->Form);
-    this->Form = CM_NULLPTR;
+    this->Form = nullptr;
   }
   delete[] this->Fields;
   if (this->AdvancedMode) {
@@ -210,7 +211,7 @@ void cmCursesMainForm::RePost()
   this->Fields = new FIELD*[3 * this->NumberOfVisibleEntries + 1];
   size_t cc;
   for (cc = 0; cc < 3 * this->NumberOfVisibleEntries + 1; cc++) {
-    this->Fields[cc] = CM_NULLPTR;
+    this->Fields[cc] = nullptr;
   }
 
   // Assign fields
@@ -239,7 +240,7 @@ void cmCursesMainForm::RePost()
     this->NumberOfVisibleEntries = 1;
   }
   // Has to be null terminated.
-  this->Fields[3 * this->NumberOfVisibleEntries] = CM_NULLPTR;
+  this->Fields[3 * this->NumberOfVisibleEntries] = nullptr;
 }
 
 void cmCursesMainForm::Render(int left, int top, int width, int height)
@@ -259,7 +260,7 @@ void cmCursesMainForm::Render(int left, int top, int width, int height)
     // Delete the previous form
     unpost_form(this->Form);
     free_form(this->Form);
-    this->Form = CM_NULLPTR;
+    this->Form = nullptr;
   }
 
   // Wrong window size
@@ -341,23 +342,21 @@ void cmCursesMainForm::PrintKeys(int process /* = 0 */)
   }
 
   // Give the current widget (if it exists), a chance to print keys
-  cmCursesWidget* cw = CM_NULLPTR;
+  cmCursesWidget* cw = nullptr;
   if (this->Form) {
     FIELD* currentField = current_field(this->Form);
     cw = reinterpret_cast<cmCursesWidget*>(field_userptr(currentField));
   }
 
   char fmt_s[] = "%s";
-  if (cw == CM_NULLPTR || !cw->PrintKeys()) {
+  if (cw == nullptr || !cw->PrintKeys()) {
     char firstLine[512] = "";
     char secondLine[512] = "";
     char thirdLine[512] = "";
     if (process) {
-      const char* clearLine =
-        "                                                                    ";
-      strcpy(firstLine, clearLine);
-      strcpy(secondLine, clearLine);
-      strcpy(thirdLine, clearLine);
+      memset(firstLine, ' ', 68);
+      memset(secondLine, ' ', 68);
+      memset(thirdLine, ' ', 68);
     } else {
       if (this->OkToGenerate) {
         sprintf(firstLine,
@@ -380,7 +379,7 @@ void cmCursesMainForm::PrintKeys(int process /* = 0 */)
     char fmt[512] =
       "Press [enter] to edit option Press [d] to delete an entry";
     if (process) {
-      strcpy(fmt, "                           ");
+      memset(fmt, ' ', 27);
     }
     printw(fmt_s, fmt);
     curses_move(y - 3, 0);
@@ -425,7 +424,7 @@ void cmCursesMainForm::UpdateStatusBar(const char* message)
   // Get the key of the current entry
   FIELD* cur = current_field(this->Form);
   int findex = field_index(cur);
-  cmCursesWidget* lbl = CM_NULLPTR;
+  cmCursesWidget* lbl = nullptr;
   if (findex >= 0) {
     lbl = reinterpret_cast<cmCursesWidget*>(
       field_userptr(this->Fields[findex - 2]));
@@ -456,41 +455,27 @@ void cmCursesMainForm::UpdateStatusBar(const char* message)
   // Join the key, help string and pad with spaces
   // (or truncate) as necessary
   char bar[cmCursesMainForm::MAX_WIDTH];
-  size_t i, curFieldLen = strlen(curField);
+  size_t curFieldLen = strlen(curField);
   size_t helpLen = strlen(help);
 
-  size_t width;
-  if (x < cmCursesMainForm::MAX_WIDTH) {
-    width = x;
-  } else {
-    width = cmCursesMainForm::MAX_WIDTH;
-  }
+  size_t width = std::min<size_t>(x, cmCursesMainForm::MAX_WIDTH);
 
   if (message) {
     curField = message;
     curFieldLen = strlen(message);
+    strncpy(bar, curField, width);
     if (curFieldLen < width) {
-      strcpy(bar, curField);
-      for (i = curFieldLen; i < width; ++i) {
-        bar[i] = ' ';
-      }
-    } else {
-      strncpy(bar, curField, width);
+      memset(bar + curFieldLen, ' ', width - curFieldLen);
     }
   } else {
-    if (curFieldLen >= width) {
-      strncpy(bar, curField, width);
-    } else {
-      strcpy(bar, curField);
+    strncpy(bar, curField, width);
+    if (curFieldLen < width) {
       bar[curFieldLen] = ':';
       bar[curFieldLen + 1] = ' ';
-      if (curFieldLen + helpLen + 2 >= width) {
-        strncpy(bar + curFieldLen + 2, help, width - curFieldLen - 2);
-      } else {
-        strcpy(bar + curFieldLen + 2, help);
-        for (i = curFieldLen + helpLen + 2; i < width; ++i) {
-          bar[i] = ' ';
-        }
+      strncpy(bar + curFieldLen + 2, help, width - curFieldLen - 2);
+      if (curFieldLen + helpLen + 2 < width) {
+        memset(bar + curFieldLen + helpLen + 2, ' ',
+               width - curFieldLen + helpLen + 2);
       }
     }
   }
@@ -503,9 +488,7 @@ void cmCursesMainForm::UpdateStatusBar(const char* message)
   char vertmp[128];
   sprintf(vertmp, "CMake Version %s", cmVersion::GetCMakeVersion());
   size_t sideSpace = (width - strlen(vertmp));
-  for (i = 0; i < sideSpace; i++) {
-    version[i] = ' ';
-  }
+  memset(version, ' ', sideSpace);
   sprintf(version + sideSpace, "%s", vertmp);
   version[width] = '\0';
 
@@ -529,7 +512,7 @@ void cmCursesMainForm::UpdateProgress(const char* msg, float prog, void* vp)
   char tmp[1024];
   const char* cmsg = tmp;
   if (prog >= 0) {
-    sprintf(tmp, "%s %i%%", msg, (int)(100 * prog));
+    sprintf(tmp, "%s %i%%", msg, static_cast<int>(100 * prog));
   } else {
     cmsg = msg;
   }
@@ -557,7 +540,7 @@ int cmCursesMainForm::Configure(int noconfigure)
   this->FillCacheManagerFromUI();
   this->CMakeInstance->SaveCache(
     this->CMakeInstance->GetHomeOutputDirectory());
-  this->LoadCache(CM_NULLPTR);
+  this->LoadCache(nullptr);
 
   // Get rid of previous errors
   this->Errors = std::vector<std::string>();
@@ -574,7 +557,7 @@ int cmCursesMainForm::Configure(int noconfigure)
   } else {
     retVal = this->CMakeInstance->Configure();
   }
-  this->CMakeInstance->SetProgressCallback(CM_NULLPTR, CM_NULLPTR);
+  this->CMakeInstance->SetProgressCallback(nullptr, nullptr);
 
   keypad(stdscr, true); /* Use key symbols as KEY_DOWN */
 
@@ -628,7 +611,7 @@ int cmCursesMainForm::Generate()
   // run the generate process
   int retVal = this->CMakeInstance->Generate();
 
-  this->CMakeInstance->SetProgressCallback(CM_NULLPTR, CM_NULLPTR);
+  this->CMakeInstance->SetProgressCallback(nullptr, nullptr);
   keypad(stdscr, true); /* Use key symbols as KEY_DOWN */
 
   if (retVal != 0 || !this->Errors.empty()) {
@@ -877,7 +860,7 @@ void cmCursesMainForm::HandleInput()
         cmCursesWidget* lbl = reinterpret_cast<cmCursesWidget*>(
           field_userptr(this->Fields[findex - 2]));
         const char* curField = lbl->GetValue();
-        const char* helpString = CM_NULLPTR;
+        const char* helpString = nullptr;
 
         const char* existingValue =
           this->CMakeInstance->GetState()->GetCacheEntryValue(curField);
@@ -962,7 +945,7 @@ void cmCursesMainForm::HandleInput()
         // (findex always corresponds to the value field)
         FIELD* nextCur;
         if (findex == 2) {
-          nextCur = CM_NULLPTR;
+          nextCur = nullptr;
         } else if (findex == 3 * this->NumberOfVisibleEntries - 1) {
           nextCur = this->Fields[findex - 5];
         } else {
@@ -992,7 +975,7 @@ void cmCursesMainForm::HandleInput()
 
           if (nextCur) {
             // make the next or prev. current field after deletion
-            nextCur = CM_NULLPTR;
+            nextCur = nullptr;
             std::vector<cmCursesCacheEntryComposite*>::iterator it;
             for (it = this->Entries->begin(); it != this->Entries->end();
                  ++it) {
@@ -1041,7 +1024,7 @@ void cmCursesMainForm::JumpToCacheEntry(const char* astr)
   int findex = start_index;
   for (;;) {
     if (!str.empty()) {
-      cmCursesWidget* lbl = CM_NULLPTR;
+      cmCursesWidget* lbl = nullptr;
       if (findex >= 0) {
         lbl = reinterpret_cast<cmCursesWidget*>(
           field_userptr(this->Fields[findex - 2]));
diff --git a/Source/CursesDialog/cmCursesMainForm.h b/Source/CursesDialog/cmCursesMainForm.h
index e35cf3ed7..7f5b3cad6 100644
--- a/Source/CursesDialog/cmCursesMainForm.h
+++ b/Source/CursesDialog/cmCursesMainForm.h
@@ -3,7 +3,7 @@
 #ifndef cmCursesMainForm_h
 #define cmCursesMainForm_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCursesForm.h"
 #include "cmCursesStandardIncludes.h"
@@ -27,7 +27,7 @@ class cmCursesMainForm : public cmCursesForm
 
 public:
   cmCursesMainForm(std::vector<std::string> const& args, int initwidth);
-  ~cmCursesMainForm() CM_OVERRIDE;
+  ~cmCursesMainForm() override;
 
   /**
    * Set the widgets which represent the cache entries.
@@ -37,13 +37,13 @@ public:
   /**
    * Handle user input.
    */
-  void HandleInput() CM_OVERRIDE;
+  void HandleInput() override;
 
   /**
    * Display form. Use a window of size width x height, starting
    * at top, left.
    */
-  void Render(int left, int top, int width, int height) CM_OVERRIDE;
+  void Render(int left, int top, int width, int height) override;
 
   /**
    * Returns true if an entry with the given key is in the
@@ -64,7 +64,7 @@ public:
    * exception is during a resize. The optional argument specifies the
    * string to be displayed in the status bar.
    */
-  void UpdateStatusBar() CM_OVERRIDE { this->UpdateStatusBar(CM_NULLPTR); }
+  void UpdateStatusBar() override { this->UpdateStatusBar(nullptr); }
   virtual void UpdateStatusBar(const char* message);
 
   /**
@@ -80,7 +80,7 @@ public:
    * During a CMake run, an error handle should add errors
    * to be displayed afterwards.
    */
-  void AddError(const char* message, const char* title) CM_OVERRIDE;
+  void AddError(const char* message, const char* title) override;
 
   /**
    * Used to do a configure. If argument is specified, it does only the check
diff --git a/Source/CursesDialog/cmCursesOptionsWidget.cxx b/Source/CursesDialog/cmCursesOptionsWidget.cxx
index d26a98f86..a8c493380 100644
--- a/Source/CursesDialog/cmCursesOptionsWidget.cxx
+++ b/Source/CursesDialog/cmCursesOptionsWidget.cxx
@@ -75,9 +75,8 @@ void cmCursesOptionsWidget::SetOption(const std::string& value)
   this->CurrentOption = 0; // default to 0 index
   this->SetValue(value);
   int index = 0;
-  for (std::vector<std::string>::iterator i = this->Options.begin();
-       i != this->Options.end(); ++i) {
-    if (*i == value) {
+  for (auto const& opt : this->Options) {
+    if (opt == value) {
       this->CurrentOption = index;
     }
     index++;
diff --git a/Source/CursesDialog/cmCursesOptionsWidget.h b/Source/CursesDialog/cmCursesOptionsWidget.h
index 7f4416f95..3e50e2d4c 100644
--- a/Source/CursesDialog/cmCursesOptionsWidget.h
+++ b/Source/CursesDialog/cmCursesOptionsWidget.h
@@ -3,7 +3,7 @@
 #ifndef cmCursesOptionsWidget_h
 #define cmCursesOptionsWidget_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCursesStandardIncludes.h"
 #include "cmCursesWidget.h"
@@ -24,7 +24,7 @@ public:
   // Handle user input. Called by the container of this widget
   // when this widget has focus. Returns true if the input was
   // handled.
-  bool HandleInput(int& key, cmCursesMainForm* fm, WINDOW* w) CM_OVERRIDE;
+  bool HandleInput(int& key, cmCursesMainForm* fm, WINDOW* w) override;
   void SetOption(const std::string&);
   void AddOption(std::string const&);
   void NextOption();
diff --git a/Source/CursesDialog/cmCursesPathWidget.h b/Source/CursesDialog/cmCursesPathWidget.h
index ae6c16d02..bfa0ea343 100644
--- a/Source/CursesDialog/cmCursesPathWidget.h
+++ b/Source/CursesDialog/cmCursesPathWidget.h
@@ -3,7 +3,7 @@
 #ifndef cmCursesPathWidget_h
 #define cmCursesPathWidget_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCursesStandardIncludes.h"
 #include "cmCursesStringWidget.h"
@@ -23,9 +23,9 @@ public:
    * This method is called when different keys are pressed. The
    * subclass can have a special implementation handler for this.
    */
-  void OnTab(cmCursesMainForm* fm, WINDOW* w) CM_OVERRIDE;
-  void OnReturn(cmCursesMainForm* fm, WINDOW* w) CM_OVERRIDE;
-  void OnType(int& key, cmCursesMainForm* fm, WINDOW* w) CM_OVERRIDE;
+  void OnTab(cmCursesMainForm* fm, WINDOW* w) override;
+  void OnReturn(cmCursesMainForm* fm, WINDOW* w) override;
+  void OnType(int& key, cmCursesMainForm* fm, WINDOW* w) override;
 
 protected:
   std::string LastString;
diff --git a/Source/CursesDialog/cmCursesStandardIncludes.h b/Source/CursesDialog/cmCursesStandardIncludes.h
index 5c5950483..332d2af08 100644
--- a/Source/CursesDialog/cmCursesStandardIncludes.h
+++ b/Source/CursesDialog/cmCursesStandardIncludes.h
@@ -3,7 +3,7 @@
 #ifndef cmCursesStandardIncludes_h
 #define cmCursesStandardIncludes_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #if defined(__hpux)
 #define _BOOL_DEFINED
diff --git a/Source/CursesDialog/cmCursesStringWidget.cxx b/Source/CursesDialog/cmCursesStringWidget.cxx
index ff189f01e..5e2a329d9 100644
--- a/Source/CursesDialog/cmCursesStringWidget.cxx
+++ b/Source/CursesDialog/cmCursesStringWidget.cxx
@@ -74,7 +74,7 @@ bool cmCursesStringWidget::HandleInput(int& key, cmCursesMainForm* fm,
     return false;
   }
 
-  this->OriginalString = CM_NULLPTR;
+  this->OriginalString = nullptr;
   this->Done = false;
 
   char debugMessage[128];
@@ -188,9 +188,7 @@ bool cmCursesStringWidget::PrintKeys()
     char fmt_s[] = "%s";
     char firstLine[512];
     // Clean the toolbar
-    for (int i = 0; i < 512; i++) {
-      firstLine[i] = ' ';
-    }
+    memset(firstLine, ' ', sizeof(firstLine));
     firstLine[511] = '\0';
     curses_move(y - 4, 0);
     printw(fmt_s, firstLine);
diff --git a/Source/CursesDialog/cmCursesStringWidget.h b/Source/CursesDialog/cmCursesStringWidget.h
index 5eb33666d..90310f612 100644
--- a/Source/CursesDialog/cmCursesStringWidget.h
+++ b/Source/CursesDialog/cmCursesStringWidget.h
@@ -3,7 +3,7 @@
 #ifndef cmCursesStringWidget_h
 #define cmCursesStringWidget_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCursesStandardIncludes.h"
 #include "cmCursesWidget.h"
@@ -30,14 +30,14 @@ public:
    * when this widget has focus. Returns true if the input was
    * handled.
    */
-  bool HandleInput(int& key, cmCursesMainForm* fm, WINDOW* w) CM_OVERRIDE;
+  bool HandleInput(int& key, cmCursesMainForm* fm, WINDOW* w) override;
 
   /**
    * Set/Get the string.
    */
   void SetString(const std::string& value);
   const char* GetString();
-  const char* GetValue() CM_OVERRIDE;
+  const char* GetValue() override;
 
   /**
    * Set/Get InEdit flag. Can be used to tell the widget to leave
@@ -59,7 +59,7 @@ public:
    * in the toolbar and return true. Otherwise, return false
    * and the parent widget will print.
    */
-  bool PrintKeys() CM_OVERRIDE;
+  bool PrintKeys() override;
 
 protected:
   // true if the widget is in edit mode
diff --git a/Source/CursesDialog/cmCursesWidget.cxx b/Source/CursesDialog/cmCursesWidget.cxx
index 054f27e29..cc07411d4 100644
--- a/Source/CursesDialog/cmCursesWidget.cxx
+++ b/Source/CursesDialog/cmCursesWidget.cxx
@@ -14,7 +14,7 @@ cmCursesWidget::~cmCursesWidget()
 {
   if (this->Field) {
     free_field(this->Field);
-    this->Field = CM_NULLPTR;
+    this->Field = nullptr;
   }
 }
 
diff --git a/Source/CursesDialog/cmCursesWidget.h b/Source/CursesDialog/cmCursesWidget.h
index 3470d7096..a44c5e6b6 100644
--- a/Source/CursesDialog/cmCursesWidget.h
+++ b/Source/CursesDialog/cmCursesWidget.h
@@ -3,7 +3,7 @@
 #ifndef cmCursesWidget_h
 #define cmCursesWidget_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCursesStandardIncludes.h"
 #include "cmStateTypes.h"
diff --git a/Source/CursesDialog/form/.gitattributes b/Source/CursesDialog/form/.gitattributes
deleted file mode 100644
index 62d728cf6..000000000
--- a/Source/CursesDialog/form/.gitattributes
+++ /dev/null
@@ -1 +0,0 @@
-* -format.clang-format
diff --git a/Source/CursesDialog/form/CMakeLists.txt b/Source/CursesDialog/form/CMakeLists.txt
index 0677043a9..b468f5b31 100644
--- a/Source/CursesDialog/form/CMakeLists.txt
+++ b/Source/CursesDialog/form/CMakeLists.txt
@@ -3,12 +3,9 @@
 
 project(CMAKE_FORM)
 
-include_regular_expression("^.*$")
-include_directories(${CURSES_INCLUDE_PATH} "${CMAKE_CURRENT_BINARY_DIR}")
-
 configure_file(cmFormConfigure.h.in "${CMAKE_CURRENT_BINARY_DIR}/cmFormConfigure.h")
 
-set(  FORM_SRCS
+add_library(cmForm
              fld_arg.c
              fld_attr.c
              fld_current.c
@@ -49,10 +46,16 @@ set(  FORM_SRCS
              fty_num.c
              fty_regex.c
    )
-             
-include_directories(${CMAKE_FORM_SOURCE_DIR})
-add_library(cmForm ${FORM_SRCS} )
+
+target_include_directories(cmForm
+  PUBLIC
+    ${CURSES_INCLUDE_PATH}
+    ${CMAKE_FORM_BINARY_DIR}
+    ${CMAKE_FORM_SOURCE_DIR}
+  )
+
 target_link_libraries(cmForm ${CURSES_LIBRARY})
+
 if(CURSES_EXTRA_LIBRARY)
   target_link_libraries(cmForm ${CURSES_EXTRA_LIBRARY})
 endif()
diff --git a/Source/LexerParser/.gitattributes b/Source/LexerParser/.gitattributes
deleted file mode 100644
index 47eedfb4b..000000000
--- a/Source/LexerParser/.gitattributes
+++ /dev/null
@@ -1,17 +0,0 @@
-/cmCommandArgumentLexer.cxx        generated
-/cmCommandArgumentLexer.h          generated
-/cmCommandArgumentParser.cxx       generated
-/cmCommandArgumentParserTokens.h   generated
-/cmDependsJavaLexer.cxx            generated
-/cmDependsJavaLexer.h              generated
-/cmDependsJavaParser.cxx           generated
-/cmDependsJavaParserTokens.h       generated
-/cmExprLexer.cxx                   generated
-/cmExprLexer.h                     generated
-/cmExprParser.cxx                  generated
-/cmExprParserTokens.h              generated
-/cmFortranLexer.cxx                generated
-/cmFortranLexer.h                  generated
-/cmFortranParser.cxx               generated
-/cmFortranParserTokens.h           generated
-/cmListFileLexer.c                 generated
diff --git a/Source/LexerParser/cmCommandArgumentLexer.cxx b/Source/LexerParser/cmCommandArgumentLexer.cxx
index 12dce3758..bf6bc2f1e 100644
--- a/Source/LexerParser/cmCommandArgumentLexer.cxx
+++ b/Source/LexerParser/cmCommandArgumentLexer.cxx
@@ -1,7 +1,4 @@
 #include "cmStandardLexer.h"
-#line 2 "cmCommandArgumentLexer.cxx"
-
-#line 4 "cmCommandArgumentLexer.cxx"
 
 #define FLEXINT_H 1
 #define  YY_INT_ALIGNED short int
@@ -11,11 +8,221 @@
 #define FLEX_SCANNER
 #define YY_FLEX_MAJOR_VERSION 2
 #define YY_FLEX_MINOR_VERSION 6
-#define YY_FLEX_SUBMINOR_VERSION 1
+#define YY_FLEX_SUBMINOR_VERSION 4
 #if YY_FLEX_SUBMINOR_VERSION > 0
 #define FLEX_BETA
 #endif
 
+#ifdef yy_create_buffer
+#define cmCommandArgument_yy_create_buffer_ALREADY_DEFINED
+#else
+#define yy_create_buffer cmCommandArgument_yy_create_buffer
+#endif
+
+#ifdef yy_delete_buffer
+#define cmCommandArgument_yy_delete_buffer_ALREADY_DEFINED
+#else
+#define yy_delete_buffer cmCommandArgument_yy_delete_buffer
+#endif
+
+#ifdef yy_scan_buffer
+#define cmCommandArgument_yy_scan_buffer_ALREADY_DEFINED
+#else
+#define yy_scan_buffer cmCommandArgument_yy_scan_buffer
+#endif
+
+#ifdef yy_scan_string
+#define cmCommandArgument_yy_scan_string_ALREADY_DEFINED
+#else
+#define yy_scan_string cmCommandArgument_yy_scan_string
+#endif
+
+#ifdef yy_scan_bytes
+#define cmCommandArgument_yy_scan_bytes_ALREADY_DEFINED
+#else
+#define yy_scan_bytes cmCommandArgument_yy_scan_bytes
+#endif
+
+#ifdef yy_init_buffer
+#define cmCommandArgument_yy_init_buffer_ALREADY_DEFINED
+#else
+#define yy_init_buffer cmCommandArgument_yy_init_buffer
+#endif
+
+#ifdef yy_flush_buffer
+#define cmCommandArgument_yy_flush_buffer_ALREADY_DEFINED
+#else
+#define yy_flush_buffer cmCommandArgument_yy_flush_buffer
+#endif
+
+#ifdef yy_load_buffer_state
+#define cmCommandArgument_yy_load_buffer_state_ALREADY_DEFINED
+#else
+#define yy_load_buffer_state cmCommandArgument_yy_load_buffer_state
+#endif
+
+#ifdef yy_switch_to_buffer
+#define cmCommandArgument_yy_switch_to_buffer_ALREADY_DEFINED
+#else
+#define yy_switch_to_buffer cmCommandArgument_yy_switch_to_buffer
+#endif
+
+#ifdef yypush_buffer_state
+#define cmCommandArgument_yypush_buffer_state_ALREADY_DEFINED
+#else
+#define yypush_buffer_state cmCommandArgument_yypush_buffer_state
+#endif
+
+#ifdef yypop_buffer_state
+#define cmCommandArgument_yypop_buffer_state_ALREADY_DEFINED
+#else
+#define yypop_buffer_state cmCommandArgument_yypop_buffer_state
+#endif
+
+#ifdef yyensure_buffer_stack
+#define cmCommandArgument_yyensure_buffer_stack_ALREADY_DEFINED
+#else
+#define yyensure_buffer_stack cmCommandArgument_yyensure_buffer_stack
+#endif
+
+#ifdef yylex
+#define cmCommandArgument_yylex_ALREADY_DEFINED
+#else
+#define yylex cmCommandArgument_yylex
+#endif
+
+#ifdef yyrestart
+#define cmCommandArgument_yyrestart_ALREADY_DEFINED
+#else
+#define yyrestart cmCommandArgument_yyrestart
+#endif
+
+#ifdef yylex_init
+#define cmCommandArgument_yylex_init_ALREADY_DEFINED
+#else
+#define yylex_init cmCommandArgument_yylex_init
+#endif
+
+#ifdef yylex_init_extra
+#define cmCommandArgument_yylex_init_extra_ALREADY_DEFINED
+#else
+#define yylex_init_extra cmCommandArgument_yylex_init_extra
+#endif
+
+#ifdef yylex_destroy
+#define cmCommandArgument_yylex_destroy_ALREADY_DEFINED
+#else
+#define yylex_destroy cmCommandArgument_yylex_destroy
+#endif
+
+#ifdef yyget_debug
+#define cmCommandArgument_yyget_debug_ALREADY_DEFINED
+#else
+#define yyget_debug cmCommandArgument_yyget_debug
+#endif
+
+#ifdef yyset_debug
+#define cmCommandArgument_yyset_debug_ALREADY_DEFINED
+#else
+#define yyset_debug cmCommandArgument_yyset_debug
+#endif
+
+#ifdef yyget_extra
+#define cmCommandArgument_yyget_extra_ALREADY_DEFINED
+#else
+#define yyget_extra cmCommandArgument_yyget_extra
+#endif
+
+#ifdef yyset_extra
+#define cmCommandArgument_yyset_extra_ALREADY_DEFINED
+#else
+#define yyset_extra cmCommandArgument_yyset_extra
+#endif
+
+#ifdef yyget_in
+#define cmCommandArgument_yyget_in_ALREADY_DEFINED
+#else
+#define yyget_in cmCommandArgument_yyget_in
+#endif
+
+#ifdef yyset_in
+#define cmCommandArgument_yyset_in_ALREADY_DEFINED
+#else
+#define yyset_in cmCommandArgument_yyset_in
+#endif
+
+#ifdef yyget_out
+#define cmCommandArgument_yyget_out_ALREADY_DEFINED
+#else
+#define yyget_out cmCommandArgument_yyget_out
+#endif
+
+#ifdef yyset_out
+#define cmCommandArgument_yyset_out_ALREADY_DEFINED
+#else
+#define yyset_out cmCommandArgument_yyset_out
+#endif
+
+#ifdef yyget_leng
+#define cmCommandArgument_yyget_leng_ALREADY_DEFINED
+#else
+#define yyget_leng cmCommandArgument_yyget_leng
+#endif
+
+#ifdef yyget_text
+#define cmCommandArgument_yyget_text_ALREADY_DEFINED
+#else
+#define yyget_text cmCommandArgument_yyget_text
+#endif
+
+#ifdef yyget_lineno
+#define cmCommandArgument_yyget_lineno_ALREADY_DEFINED
+#else
+#define yyget_lineno cmCommandArgument_yyget_lineno
+#endif
+
+#ifdef yyset_lineno
+#define cmCommandArgument_yyset_lineno_ALREADY_DEFINED
+#else
+#define yyset_lineno cmCommandArgument_yyset_lineno
+#endif
+
+#ifdef yyget_column
+#define cmCommandArgument_yyget_column_ALREADY_DEFINED
+#else
+#define yyget_column cmCommandArgument_yyget_column
+#endif
+
+#ifdef yyset_column
+#define cmCommandArgument_yyset_column_ALREADY_DEFINED
+#else
+#define yyset_column cmCommandArgument_yyset_column
+#endif
+
+#ifdef yywrap
+#define cmCommandArgument_yywrap_ALREADY_DEFINED
+#else
+#define yywrap cmCommandArgument_yywrap
+#endif
+
+#ifdef yyalloc
+#define cmCommandArgument_yyalloc_ALREADY_DEFINED
+#else
+#define yyalloc cmCommandArgument_yyalloc
+#endif
+
+#ifdef yyrealloc
+#define cmCommandArgument_yyrealloc_ALREADY_DEFINED
+#else
+#define yyrealloc cmCommandArgument_yyrealloc
+#endif
+
+#ifdef yyfree
+#define cmCommandArgument_yyfree_ALREADY_DEFINED
+#else
+#define yyfree cmCommandArgument_yyfree
+#endif
+
 /* First, we deal with  platform-specific or compiler-specific issues. */
 
 /* begin standard C headers. */
@@ -86,10 +293,16 @@ typedef unsigned int flex_uint32_t;
 #define UINT32_MAX             (4294967295U)
 #endif
 
+#ifndef SIZE_MAX
+#define SIZE_MAX               (~(size_t)0)
+#endif
+
 #endif /* ! C99 */
 
 #endif /* ! FLEXINT_H */
 
+/* begin standard C++ headers. */
+
 /* TODO: this is always defined, so inline it */
 #define yyconst const
 
@@ -102,12 +315,10 @@ typedef unsigned int flex_uint32_t;
 /* Returned upon end-of-file. */
 #define YY_NULL 0
 
-/* Promotes a possibly negative, possibly signed char to an unsigned
- * integer for use as an array index.  If the signed char is negative,
- * we want to instead treat it as an 8-bit unsigned char, hence the
- * double cast.
+/* Promotes a possibly negative, possibly signed char to an
+ *   integer in range [0..255] for use as an array index.
  */
-#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
+#define YY_SC_TO_UI(c) ((YY_CHAR) (c))
 
 /* An opaque pointer. */
 #ifndef YY_TYPEDEF_YY_SCANNER_T
@@ -131,20 +342,16 @@ typedef void* yyscan_t;
  * definition of BEGIN.
  */
 #define BEGIN yyg->yy_start = 1 + 2 *
-
 /* Translate the current start state into a value that can be later handed
  * to BEGIN to return to the state.  The YYSTATE alias is for lex
  * compatibility.
  */
 #define YY_START ((yyg->yy_start - 1) / 2)
 #define YYSTATE YY_START
-
 /* Action number for EOF rule of a given start state. */
 #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
-
 /* Special action meaning "start processing a new file". */
-#define YY_NEW_FILE cmCommandArgument_yyrestart(yyin ,yyscanner )
-
+#define YY_NEW_FILE yyrestart( yyin , yyscanner )
 #define YY_END_OF_BUFFER_CHAR 0
 
 /* Size of default input buffer. */
@@ -194,7 +401,6 @@ typedef size_t yy_size_t;
 		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
 		} \
 	while ( 0 )
-
 #define unput(c) yyunput( c, yyg->yytext_ptr , yyscanner )
 
 #ifndef YY_STRUCT_YY_BUFFER_STATE
@@ -254,7 +460,7 @@ struct yy_buffer_state
 	 * possible backing-up.
 	 *
 	 * When we actually see the EOF, we change the status to "new"
-	 * (via cmCommandArgument_yyrestart()), so that the user can continue scanning by
+	 * (via yyrestart()), so that the user can continue scanning by
 	 * just pointing yyin at a new input file.
 	 */
 #define YY_BUFFER_EOF_PENDING 2
@@ -271,73 +477,67 @@ struct yy_buffer_state
 #define YY_CURRENT_BUFFER ( yyg->yy_buffer_stack \
                           ? yyg->yy_buffer_stack[yyg->yy_buffer_stack_top] \
                           : NULL)
-
 /* Same as previous macro, but useful when we know that the buffer stack is not
  * NULL or when we need an lvalue. For internal use only.
  */
 #define YY_CURRENT_BUFFER_LVALUE yyg->yy_buffer_stack[yyg->yy_buffer_stack_top]
 
-void cmCommandArgument_yyrestart (FILE *input_file ,yyscan_t yyscanner );
-void cmCommandArgument_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmCommandArgument_yy_create_buffer (FILE *file,int size ,yyscan_t yyscanner );
-void cmCommandArgument_yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmCommandArgument_yy_flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmCommandArgument_yypush_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-void cmCommandArgument_yypop_buffer_state (yyscan_t yyscanner );
-
-static void cmCommandArgument_yyensure_buffer_stack (yyscan_t yyscanner );
-static void cmCommandArgument_yy_load_buffer_state (yyscan_t yyscanner );
-static void cmCommandArgument_yy_init_buffer (YY_BUFFER_STATE b,FILE *file ,yyscan_t yyscanner );
+void yyrestart ( FILE *input_file , yyscan_t yyscanner );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size , yyscan_t yyscanner );
+void yy_delete_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yy_flush_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+void yypop_buffer_state ( yyscan_t yyscanner );
 
-#define YY_FLUSH_BUFFER cmCommandArgument_yy_flush_buffer(YY_CURRENT_BUFFER ,yyscanner)
+static void yyensure_buffer_stack ( yyscan_t yyscanner );
+static void yy_load_buffer_state ( yyscan_t yyscanner );
+static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file , yyscan_t yyscanner );
+#define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER , yyscanner)
 
-YY_BUFFER_STATE cmCommandArgument_yy_scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmCommandArgument_yy_scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmCommandArgument_yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len , yyscan_t yyscanner );
 
-void *cmCommandArgument_yyalloc (yy_size_t ,yyscan_t yyscanner );
-void *cmCommandArgument_yyrealloc (void *,yy_size_t ,yyscan_t yyscanner );
-void cmCommandArgument_yyfree (void * ,yyscan_t yyscanner );
-
-#define yy_new_buffer cmCommandArgument_yy_create_buffer
+void *yyalloc ( yy_size_t , yyscan_t yyscanner );
+void *yyrealloc ( void *, yy_size_t , yyscan_t yyscanner );
+void yyfree ( void * , yyscan_t yyscanner );
 
+#define yy_new_buffer yy_create_buffer
 #define yy_set_interactive(is_interactive) \
 	{ \
 	if ( ! YY_CURRENT_BUFFER ){ \
-        cmCommandArgument_yyensure_buffer_stack (yyscanner); \
+        yyensure_buffer_stack (yyscanner); \
 		YY_CURRENT_BUFFER_LVALUE =    \
-            cmCommandArgument_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); \
 	} \
 	YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
 	}
-
 #define yy_set_bol(at_bol) \
 	{ \
 	if ( ! YY_CURRENT_BUFFER ){\
-        cmCommandArgument_yyensure_buffer_stack (yyscanner); \
+        yyensure_buffer_stack (yyscanner); \
 		YY_CURRENT_BUFFER_LVALUE =    \
-            cmCommandArgument_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); \
 	} \
 	YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
 	}
-
 #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
 
 /* Begin user sect3 */
 
 #define cmCommandArgument_yywrap(yyscanner) (/*CONSTCOND*/1)
 #define YY_SKIP_YYWRAP
-
-typedef unsigned char YY_CHAR;
+typedef flex_uint8_t YY_CHAR;
 
 typedef int yy_state_type;
 
 #define yytext_ptr yytext_r
 
-static yy_state_type yy_get_previous_state (yyscan_t yyscanner );
-static yy_state_type yy_try_NUL_trans (yy_state_type current_state  ,yyscan_t yyscanner);
-static int yy_get_next_buffer (yyscan_t yyscanner );
-static void yynoreturn yy_fatal_error (yyconst char* msg ,yyscan_t yyscanner );
+static yy_state_type yy_get_previous_state ( yyscan_t yyscanner );
+static yy_state_type yy_try_NUL_trans ( yy_state_type current_state  , yyscan_t yyscanner);
+static int yy_get_next_buffer ( yyscan_t yyscanner );
+static void yynoreturn yy_fatal_error ( const char* msg , yyscan_t yyscanner );
 
 /* Done after the current pattern has been matched and before the
  * corresponding action - sets up yytext.
@@ -348,7 +548,6 @@ static void yynoreturn yy_fatal_error (yyconst char* msg ,yyscan_t yyscanner );
 	yyg->yy_hold_char = *yy_cp; \
 	*yy_cp = '\0'; \
 	yyg->yy_c_buf_p = yy_cp;
-
 #define YY_NUM_RULES 14
 #define YY_END_OF_BUFFER 15
 /* This struct is not used in this scanner,
@@ -358,14 +557,14 @@ struct yy_trans_info
 	flex_int32_t yy_verify;
 	flex_int32_t yy_nxt;
 	};
-static yyconst flex_int16_t yy_accept[30] =
+static const flex_int16_t yy_accept[30] =
     {   0,
         0,    0,    0,    0,    0,    0,   15,    9,   10,    7,
         6,   14,   11,    5,   12,   13,    9,    0,    0,    4,
         7,    0,    8,    2,    0,    3,    0,    1,    0
     } ;
 
-static yyconst YY_CHAR yy_ec[256] =
+static const YY_CHAR yy_ec[256] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    2,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
@@ -397,13 +596,13 @@ static yyconst YY_CHAR yy_ec[256] =
         1,    1,    1,    1,    1
     } ;
 
-static yyconst YY_CHAR yy_meta[12] =
+static const YY_CHAR yy_meta[12] =
     {   0,
         1,    2,    3,    4,    3,    4,    4,    4,    3,    5,
         3
     } ;
 
-static yyconst flex_uint16_t yy_base[35] =
+static const flex_int16_t yy_base[35] =
     {   0,
         0,    0,   31,   30,   29,   28,   36,    0,    6,   16,
         0,   41,   41,   41,    0,   41,    0,   22,   22,   41,
@@ -411,7 +610,7 @@ static yyconst flex_uint16_t yy_base[35] =
        21,   26,    9,   30
     } ;
 
-static yyconst flex_int16_t yy_def[35] =
+static const flex_int16_t yy_def[35] =
     {   0,
        29,    1,    1,    1,    1,    1,   29,   30,   31,   32,
        33,   29,   29,   29,   34,   29,   30,   31,   18,   29,
@@ -419,7 +618,7 @@ static yyconst flex_int16_t yy_def[35] =
        29,   29,   29,   29
     } ;
 
-static yyconst flex_uint16_t yy_nxt[53] =
+static const flex_int16_t yy_nxt[53] =
     {   0,
         8,    8,    9,   10,   11,   10,   10,   10,   12,   13,
        14,   19,   22,   28,   27,   20,   17,   17,   17,   17,
@@ -429,7 +628,7 @@ static yyconst flex_uint16_t yy_nxt[53] =
        29,   29
     } ;
 
-static yyconst flex_int16_t yy_chk[53] =
+static const flex_int16_t yy_chk[53] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    9,   33,   27,   25,    9,   10,   10,   21,   21,
@@ -446,8 +645,6 @@ static yyconst flex_int16_t yy_chk[53] =
 #define yymore() yymore_used_but_not_detected
 #define YY_MORE_ADJ 0
 #define YY_RESTORE_YY_MORE_OFFSET
-#line 1 "cmCommandArgumentLexer.in.l"
-#line 2 "cmCommandArgumentLexer.in.l"
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
 /*
@@ -456,13 +653,12 @@ This file must be translated to C++ and modified to build everywhere.
 
 Run flex >= 2.6 like this:
 
-  flex --nounistd -DFLEXINT_H --prefix=cmCommandArgument_yy --header-file=cmCommandArgumentLexer.h -ocmCommandArgumentLexer.cxx cmCommandArgumentLexer.in.l
+  flex --nounistd -DFLEXINT_H --noline --header-file=cmCommandArgumentLexer.h -ocmCommandArgumentLexer.cxx cmCommandArgumentLexer.in.l
 
 Modify cmCommandArgumentLexer.cxx:
-  - remove trailing whitespace: sed -i 's/\s*$//' cmCommandArgumentLexer.h cmCommandArgumentLexer.cxx
-  - remove blank lines at end of file
-  - #include "cmStandardLexer.h" at the top
-  - add cast in cmCommandArgument_yy_scan_bytes for loop condition of _yybytes_len to size_t
+  - remove trailing whitespace:              sed -i 's/\s*$//' cmCommandArgumentLexer.h cmCommandArgumentLexer.cxx
+  - remove blank lines at end of file:       sed -i '${/^$/d;}' cmCommandArgumentLexer.h cmCommandArgumentLexer.cxx
+  - #include "cmStandardLexer.h" at the top: sed -i '1i#include "cmStandardLexer.h"' cmCommandArgumentLexer.cxx
 
 */
 
@@ -480,9 +676,6 @@ Modify cmCommandArgumentLexer.cxx:
 
 /*--------------------------------------------------------------------------*/
 
-
-#line 484 "cmCommandArgumentLexer.cxx"
-
 #define INITIAL 0
 #define ESCAPES 1
 #define NOESCAPES 2
@@ -525,44 +718,44 @@ struct yyguts_t
 
     }; /* end struct yyguts_t */
 
-static int yy_init_globals (yyscan_t yyscanner );
+static int yy_init_globals ( yyscan_t yyscanner );
 
-int cmCommandArgument_yylex_init (yyscan_t* scanner);
+int yylex_init (yyscan_t* scanner);
 
-int cmCommandArgument_yylex_init_extra (YY_EXTRA_TYPE user_defined,yyscan_t* scanner);
+int yylex_init_extra ( YY_EXTRA_TYPE user_defined, yyscan_t* scanner);
 
 /* Accessor methods to globals.
    These are made visible to non-reentrant scanners for convenience. */
 
-int cmCommandArgument_yylex_destroy (yyscan_t yyscanner );
+int yylex_destroy ( yyscan_t yyscanner );
 
-int cmCommandArgument_yyget_debug (yyscan_t yyscanner );
+int yyget_debug ( yyscan_t yyscanner );
 
-void cmCommandArgument_yyset_debug (int debug_flag ,yyscan_t yyscanner );
+void yyset_debug ( int debug_flag , yyscan_t yyscanner );
 
-YY_EXTRA_TYPE cmCommandArgument_yyget_extra (yyscan_t yyscanner );
+YY_EXTRA_TYPE yyget_extra ( yyscan_t yyscanner );
 
-void cmCommandArgument_yyset_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner );
+void yyset_extra ( YY_EXTRA_TYPE user_defined , yyscan_t yyscanner );
 
-FILE *cmCommandArgument_yyget_in (yyscan_t yyscanner );
+FILE *yyget_in ( yyscan_t yyscanner );
 
-void cmCommandArgument_yyset_in  (FILE * _in_str ,yyscan_t yyscanner );
+void yyset_in  ( FILE * _in_str , yyscan_t yyscanner );
 
-FILE *cmCommandArgument_yyget_out (yyscan_t yyscanner );
+FILE *yyget_out ( yyscan_t yyscanner );
 
-void cmCommandArgument_yyset_out  (FILE * _out_str ,yyscan_t yyscanner );
+void yyset_out  ( FILE * _out_str , yyscan_t yyscanner );
 
-			int cmCommandArgument_yyget_leng (yyscan_t yyscanner );
+			int yyget_leng ( yyscan_t yyscanner );
 
-char *cmCommandArgument_yyget_text (yyscan_t yyscanner );
+char *yyget_text ( yyscan_t yyscanner );
 
-int cmCommandArgument_yyget_lineno (yyscan_t yyscanner );
+int yyget_lineno ( yyscan_t yyscanner );
 
-void cmCommandArgument_yyset_lineno (int _line_number ,yyscan_t yyscanner );
+void yyset_lineno ( int _line_number , yyscan_t yyscanner );
 
-int cmCommandArgument_yyget_column  (yyscan_t yyscanner );
+int yyget_column  ( yyscan_t yyscanner );
 
-void cmCommandArgument_yyset_column (int _column_no ,yyscan_t yyscanner );
+void yyset_column ( int _column_no , yyscan_t yyscanner );
 
 /* Macros after this point can all be overridden by user definitions in
  * section 1.
@@ -570,9 +763,9 @@ void cmCommandArgument_yyset_column (int _column_no ,yyscan_t yyscanner );
 
 #ifndef YY_SKIP_YYWRAP
 #ifdef __cplusplus
-extern "C" int cmCommandArgument_yywrap (yyscan_t yyscanner );
+extern "C" int yywrap ( yyscan_t yyscanner );
 #else
-extern int cmCommandArgument_yywrap (yyscan_t yyscanner );
+extern int yywrap ( yyscan_t yyscanner );
 #endif
 #endif
 
@@ -581,19 +774,18 @@ extern int cmCommandArgument_yywrap (yyscan_t yyscanner );
 #endif
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char *,yyconst char *,int ,yyscan_t yyscanner);
+static void yy_flex_strncpy ( char *, const char *, int , yyscan_t yyscanner);
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
+static int yy_flex_strlen ( const char * , yyscan_t yyscanner);
 #endif
 
 #ifndef YY_NO_INPUT
-
 #ifdef __cplusplus
-static int yyinput (yyscan_t yyscanner );
+static int yyinput ( yyscan_t yyscanner );
 #else
-static int input (yyscan_t yyscanner );
+static int input ( yyscan_t yyscanner );
 #endif
 
 #endif
@@ -624,7 +816,7 @@ static int input (yyscan_t yyscanner );
 	if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
 		{ \
 		int c = '*'; \
-		size_t n; \
+		int n; \
 		for ( n = 0; n < max_size && \
 			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
 			buf[n] = (char) c; \
@@ -637,7 +829,7 @@ static int input (yyscan_t yyscanner );
 	else \
 		{ \
 		errno=0; \
-		while ( (result = (int) fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
+		while ( (result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin)) \
 			{ \
 			if( errno != EINTR) \
 				{ \
@@ -678,9 +870,9 @@ static int input (yyscan_t yyscanner );
 #ifndef YY_DECL
 #define YY_DECL_IS_OURS 1
 
-extern int cmCommandArgument_yylex (yyscan_t yyscanner);
+extern int yylex (yyscan_t yyscanner);
 
-#define YY_DECL int cmCommandArgument_yylex (yyscan_t yyscanner)
+#define YY_DECL int yylex (yyscan_t yyscanner)
 #endif /* !YY_DECL */
 
 /* Code executed at the beginning of each rule, after yytext and yyleng
@@ -725,19 +917,15 @@ YY_DECL
 			yyout = stdout;
 
 		if ( ! YY_CURRENT_BUFFER ) {
-			cmCommandArgument_yyensure_buffer_stack (yyscanner);
+			yyensure_buffer_stack (yyscanner);
 			YY_CURRENT_BUFFER_LVALUE =
-				cmCommandArgument_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+				yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner);
 		}
 
-		cmCommandArgument_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 		}
 
 	{
-#line 42 "cmCommandArgumentLexer.in.l"
-
-
-#line 740 "cmCommandArgumentLexer.cxx"
 
 	while ( /*CONSTCOND*/1 )		/* loops until end-of-file is reached */
 		{
@@ -765,9 +953,9 @@ yy_match:
 				{
 				yy_current_state = (int) yy_def[yy_current_state];
 				if ( yy_current_state >= 30 )
-					yy_c = yy_meta[(unsigned int) yy_c];
+					yy_c = yy_meta[yy_c];
 				}
-			yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
+			yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 			++yy_cp;
 			}
 		while ( yy_base[yy_current_state] != 41 );
@@ -796,7 +984,6 @@ do_action:	/* This label is used only to access EOF actions. */
 
 case 1:
 YY_RULE_SETUP
-#line 44 "cmCommandArgumentLexer.in.l"
 {
   //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
   yyextra->AllocateParserType(yylvalp, yytext+1, strlen(yytext)-2);
@@ -805,7 +992,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 2:
 YY_RULE_SETUP
-#line 50 "cmCommandArgumentLexer.in.l"
 {
   //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
   yyextra->AllocateParserType(yylvalp, yytext+1, strlen(yytext)-2);
@@ -814,7 +1000,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 3:
 YY_RULE_SETUP
-#line 56 "cmCommandArgumentLexer.in.l"
 {
   //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
   yyextra->AllocateParserType(yylvalp, yytext+1, strlen(yytext)-2);
@@ -823,7 +1008,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 4:
 YY_RULE_SETUP
-#line 62 "cmCommandArgumentLexer.in.l"
 {
   //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
   //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
@@ -833,7 +1017,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 5:
 YY_RULE_SETUP
-#line 69 "cmCommandArgumentLexer.in.l"
 {
   //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
   //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
@@ -843,7 +1026,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 6:
 YY_RULE_SETUP
-#line 76 "cmCommandArgumentLexer.in.l"
 {
   //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
   //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
@@ -853,7 +1035,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 7:
 YY_RULE_SETUP
-#line 83 "cmCommandArgumentLexer.in.l"
 {
   //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
   yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
@@ -862,7 +1043,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 8:
 YY_RULE_SETUP
-#line 89 "cmCommandArgumentLexer.in.l"
 {
   if ( !yyextra->HandleEscapeSymbol(yylvalp, *(yytext+1)) )
     {
@@ -874,7 +1054,6 @@ YY_RULE_SETUP
 case 9:
 /* rule 9 can match eol */
 YY_RULE_SETUP
-#line 97 "cmCommandArgumentLexer.in.l"
 {
   //std::cerr << __LINE__ << " here: [" << yytext << "]" << std::endl;
   yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
@@ -883,7 +1062,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 10:
 YY_RULE_SETUP
-#line 103 "cmCommandArgumentLexer.in.l"
 {
   //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
   yylvalp->str = yyextra->DOLLARVariable;
@@ -892,7 +1070,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 11:
 YY_RULE_SETUP
-#line 109 "cmCommandArgumentLexer.in.l"
 {
   //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
   yylvalp->str = yyextra->LCURLYVariable;
@@ -901,7 +1078,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 12:
 YY_RULE_SETUP
-#line 115 "cmCommandArgumentLexer.in.l"
 {
   //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
   yylvalp->str = yyextra->BSLASHVariable;
@@ -910,7 +1086,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 13:
 YY_RULE_SETUP
-#line 121 "cmCommandArgumentLexer.in.l"
 {
   //yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
   yylvalp->str = yyextra->BSLASHVariable;
@@ -919,10 +1094,8 @@ YY_RULE_SETUP
 	YY_BREAK
 case 14:
 YY_RULE_SETUP
-#line 127 "cmCommandArgumentLexer.in.l"
 ECHO;
 	YY_BREAK
-#line 925 "cmCommandArgumentLexer.cxx"
 case YY_STATE_EOF(INITIAL):
 case YY_STATE_EOF(ESCAPES):
 case YY_STATE_EOF(NOESCAPES):
@@ -942,7 +1115,7 @@ case YY_STATE_EOF(NOESCAPES):
 			/* We're scanning a new file or input source.  It's
 			 * possible that this happened because the user
 			 * just pointed yyin at a new source and called
-			 * cmCommandArgument_yylex().  If so, then we have to assure
+			 * yylex().  If so, then we have to assure
 			 * consistency between YY_CURRENT_BUFFER and our
 			 * globals.  Here is the right place to do so, because
 			 * this is the first action (other than possibly a
@@ -1002,7 +1175,7 @@ case YY_STATE_EOF(NOESCAPES):
 				{
 				yyg->yy_did_buffer_switch_on_eof = 0;
 
-				if ( cmCommandArgument_yywrap(yyscanner ) )
+				if ( yywrap( yyscanner ) )
 					{
 					/* Note: because we've taken care in
 					 * yy_get_next_buffer() to have set up
@@ -1056,7 +1229,7 @@ case YY_STATE_EOF(NOESCAPES):
 	} /* end of action switch */
 		} /* end of scanning one token */
 	} /* end of user's declarations */
-} /* end of cmCommandArgument_yylex */
+} /* end of yylex */
 
 /* yy_get_next_buffer - try to read in a new buffer
  *
@@ -1070,7 +1243,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
 	char *source = yyg->yytext_ptr;
-	yy_size_t number_to_move, i;
+	int number_to_move, i;
 	int ret_val;
 
 	if ( yyg->yy_c_buf_p > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] )
@@ -1099,7 +1272,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 	/* Try to read more data. */
 
 	/* First move last chars to start of buffer. */
-	number_to_move = (yy_size_t) (yyg->yy_c_buf_p - yyg->yytext_ptr) - 1;
+	number_to_move = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr - 1);
 
 	for ( i = 0; i < number_to_move; ++i )
 		*(dest++) = *(source++);
@@ -1135,7 +1308,8 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 
 				b->yy_ch_buf = (char *)
 					/* Include room in for 2 EOB chars. */
-					cmCommandArgument_yyrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2 ,yyscanner );
+					yyrealloc( (void *) b->yy_ch_buf,
+							 (yy_size_t) (b->yy_buf_size + 2) , yyscanner );
 				}
 			else
 				/* Can't grow it, we don't own it. */
@@ -1167,7 +1341,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		if ( number_to_move == YY_MORE_ADJ )
 			{
 			ret_val = EOB_ACT_END_OF_FILE;
-			cmCommandArgument_yyrestart(yyin  ,yyscanner);
+			yyrestart( yyin  , yyscanner);
 			}
 
 		else
@@ -1181,12 +1355,15 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 	else
 		ret_val = EOB_ACT_CONTINUE_SCAN;
 
-	if ((int) (yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
+	if ((yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
 		/* Extend the array by 50%, plus the number we really need. */
 		int new_size = yyg->yy_n_chars + number_to_move + (yyg->yy_n_chars >> 1);
-		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) cmCommandArgument_yyrealloc((void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf,new_size ,yyscanner );
+		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc(
+			(void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size , yyscanner );
 		if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
 			YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
+		/* "- 2" to take care of EOB's */
+		YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2);
 	}
 
 	yyg->yy_n_chars += number_to_move;
@@ -1220,9 +1397,9 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 			{
 			yy_current_state = (int) yy_def[yy_current_state];
 			if ( yy_current_state >= 30 )
-				yy_c = yy_meta[(unsigned int) yy_c];
+				yy_c = yy_meta[yy_c];
 			}
-		yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
+		yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 		}
 
 	return yy_current_state;
@@ -1249,9 +1426,9 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		{
 		yy_current_state = (int) yy_def[yy_current_state];
 		if ( yy_current_state >= 30 )
-			yy_c = yy_meta[(unsigned int) yy_c];
+			yy_c = yy_meta[yy_c];
 		}
-	yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
+	yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 	yy_is_jam = (yy_current_state == 29);
 
 	(void)yyg;
@@ -1287,7 +1464,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 
 		else
 			{ /* need more input */
-			int offset = yyg->yy_c_buf_p - yyg->yytext_ptr;
+			int offset = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr);
 			++yyg->yy_c_buf_p;
 
 			switch ( yy_get_next_buffer( yyscanner ) )
@@ -1304,13 +1481,13 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 					 */
 
 					/* Reset buffer status. */
-					cmCommandArgument_yyrestart(yyin ,yyscanner);
+					yyrestart( yyin , yyscanner);
 
 					/*FALLTHROUGH*/
 
 				case EOB_ACT_END_OF_FILE:
 					{
-					if ( cmCommandArgument_yywrap(yyscanner ) )
+					if ( yywrap( yyscanner ) )
 						return 0;
 
 					if ( ! yyg->yy_did_buffer_switch_on_eof )
@@ -1342,34 +1519,34 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @note This function does not reset the start condition to @c INITIAL .
  */
-    void cmCommandArgument_yyrestart  (FILE * input_file , yyscan_t yyscanner)
+    void yyrestart  (FILE * input_file , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	if ( ! YY_CURRENT_BUFFER ){
-        cmCommandArgument_yyensure_buffer_stack (yyscanner);
+        yyensure_buffer_stack (yyscanner);
 		YY_CURRENT_BUFFER_LVALUE =
-            cmCommandArgument_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner);
 	}
 
-	cmCommandArgument_yy_init_buffer(YY_CURRENT_BUFFER,input_file ,yyscanner);
-	cmCommandArgument_yy_load_buffer_state(yyscanner );
+	yy_init_buffer( YY_CURRENT_BUFFER, input_file , yyscanner);
+	yy_load_buffer_state( yyscanner );
 }
 
 /** Switch to a different input buffer.
  * @param new_buffer The new input buffer.
  * @param yyscanner The scanner object.
  */
-    void cmCommandArgument_yy_switch_to_buffer  (YY_BUFFER_STATE  new_buffer , yyscan_t yyscanner)
+    void yy_switch_to_buffer  (YY_BUFFER_STATE  new_buffer , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	/* TODO. We should be able to replace this entire function body
 	 * with
-	 *		cmCommandArgument_yypop_buffer_state();
-	 *		cmCommandArgument_yypush_buffer_state(new_buffer);
+	 *		yypop_buffer_state();
+	 *		yypush_buffer_state(new_buffer);
      */
-	cmCommandArgument_yyensure_buffer_stack (yyscanner);
+	yyensure_buffer_stack (yyscanner);
 	if ( YY_CURRENT_BUFFER == new_buffer )
 		return;
 
@@ -1382,17 +1559,17 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		}
 
 	YY_CURRENT_BUFFER_LVALUE = new_buffer;
-	cmCommandArgument_yy_load_buffer_state(yyscanner );
+	yy_load_buffer_state( yyscanner );
 
 	/* We don't actually know whether we did this switch during
-	 * EOF (cmCommandArgument_yywrap()) processing, but the only time this flag
-	 * is looked at is after cmCommandArgument_yywrap() is called, so it's safe
+	 * EOF (yywrap()) processing, but the only time this flag
+	 * is looked at is after yywrap() is called, so it's safe
 	 * to go ahead and always set it.
 	 */
 	yyg->yy_did_buffer_switch_on_eof = 1;
 }
 
-static void cmCommandArgument_yy_load_buffer_state  (yyscan_t yyscanner)
+static void yy_load_buffer_state  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
@@ -1407,35 +1584,35 @@ static void cmCommandArgument_yy_load_buffer_state  (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @return the allocated buffer state.
  */
-    YY_BUFFER_STATE cmCommandArgument_yy_create_buffer  (FILE * file, int  size , yyscan_t yyscanner)
+    YY_BUFFER_STATE yy_create_buffer  (FILE * file, int  size , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 
-	b = (YY_BUFFER_STATE) cmCommandArgument_yyalloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+	b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) , yyscanner );
 	if ( ! b )
-		YY_FATAL_ERROR( "out of dynamic memory in cmCommandArgument_yy_create_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 
-	b->yy_buf_size = (yy_size_t)size;
+	b->yy_buf_size = size;
 
 	/* yy_ch_buf has to be 2 characters longer than the size given because
 	 * we need to put in 2 end-of-buffer characters.
 	 */
-	b->yy_ch_buf = (char *) cmCommandArgument_yyalloc(b->yy_buf_size + 2 ,yyscanner );
+	b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2) , yyscanner );
 	if ( ! b->yy_ch_buf )
-		YY_FATAL_ERROR( "out of dynamic memory in cmCommandArgument_yy_create_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 
 	b->yy_is_our_buffer = 1;
 
-	cmCommandArgument_yy_init_buffer(b,file ,yyscanner);
+	yy_init_buffer( b, file , yyscanner);
 
 	return b;
 }
 
 /** Destroy the buffer.
- * @param b a buffer created with cmCommandArgument_yy_create_buffer()
+ * @param b a buffer created with yy_create_buffer()
  * @param yyscanner The scanner object.
  */
-    void cmCommandArgument_yy_delete_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+    void yy_delete_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -1446,28 +1623,28 @@ static void cmCommandArgument_yy_load_buffer_state  (yyscan_t yyscanner)
 		YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
 
 	if ( b->yy_is_our_buffer )
-		cmCommandArgument_yyfree((void *) b->yy_ch_buf ,yyscanner );
+		yyfree( (void *) b->yy_ch_buf , yyscanner );
 
-	cmCommandArgument_yyfree((void *) b ,yyscanner );
+	yyfree( (void *) b , yyscanner );
 }
 
 /* Initializes or reinitializes a buffer.
  * This function is sometimes called more than once on the same buffer,
- * such as during a cmCommandArgument_yyrestart() or at EOF.
+ * such as during a yyrestart() or at EOF.
  */
-    static void cmCommandArgument_yy_init_buffer  (YY_BUFFER_STATE  b, FILE * file , yyscan_t yyscanner)
+    static void yy_init_buffer  (YY_BUFFER_STATE  b, FILE * file , yyscan_t yyscanner)
 
 {
 	int oerrno = errno;
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
-	cmCommandArgument_yy_flush_buffer(b ,yyscanner);
+	yy_flush_buffer( b , yyscanner);
 
 	b->yy_input_file = file;
 	b->yy_fill_buffer = 1;
 
-    /* If b is the current buffer, then cmCommandArgument_yy_init_buffer was _probably_
-     * called from cmCommandArgument_yyrestart() or through yy_get_next_buffer.
+    /* If b is the current buffer, then yy_init_buffer was _probably_
+     * called from yyrestart() or through yy_get_next_buffer.
      * In that case, we don't want to reset the lineno or column.
      */
     if (b != YY_CURRENT_BUFFER){
@@ -1484,7 +1661,7 @@ static void cmCommandArgument_yy_load_buffer_state  (yyscan_t yyscanner)
  * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
  * @param yyscanner The scanner object.
  */
-    void cmCommandArgument_yy_flush_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+    void yy_flush_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if ( ! b )
@@ -1505,7 +1682,7 @@ static void cmCommandArgument_yy_load_buffer_state  (yyscan_t yyscanner)
 	b->yy_buffer_status = YY_BUFFER_NEW;
 
 	if ( b == YY_CURRENT_BUFFER )
-		cmCommandArgument_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 }
 
 /** Pushes the new state onto the stack. The new state becomes
@@ -1514,15 +1691,15 @@ static void cmCommandArgument_yy_load_buffer_state  (yyscan_t yyscanner)
  *  @param new_buffer The new state.
  *  @param yyscanner The scanner object.
  */
-void cmCommandArgument_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner)
+void yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if (new_buffer == NULL)
 		return;
 
-	cmCommandArgument_yyensure_buffer_stack(yyscanner);
+	yyensure_buffer_stack(yyscanner);
 
-	/* This block is copied from cmCommandArgument_yy_switch_to_buffer. */
+	/* This block is copied from yy_switch_to_buffer. */
 	if ( YY_CURRENT_BUFFER )
 		{
 		/* Flush out information for old buffer. */
@@ -1536,8 +1713,8 @@ void cmCommandArgument_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_
 		yyg->yy_buffer_stack_top++;
 	YY_CURRENT_BUFFER_LVALUE = new_buffer;
 
-	/* copied from cmCommandArgument_yy_switch_to_buffer. */
-	cmCommandArgument_yy_load_buffer_state(yyscanner );
+	/* copied from yy_switch_to_buffer. */
+	yy_load_buffer_state( yyscanner );
 	yyg->yy_did_buffer_switch_on_eof = 1;
 }
 
@@ -1545,19 +1722,19 @@ void cmCommandArgument_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_
  *  The next element becomes the new top.
  *  @param yyscanner The scanner object.
  */
-void cmCommandArgument_yypop_buffer_state (yyscan_t yyscanner)
+void yypop_buffer_state (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if (!YY_CURRENT_BUFFER)
 		return;
 
-	cmCommandArgument_yy_delete_buffer(YY_CURRENT_BUFFER ,yyscanner);
+	yy_delete_buffer(YY_CURRENT_BUFFER , yyscanner);
 	YY_CURRENT_BUFFER_LVALUE = NULL;
 	if (yyg->yy_buffer_stack_top > 0)
 		--yyg->yy_buffer_stack_top;
 
 	if (YY_CURRENT_BUFFER) {
-		cmCommandArgument_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 		yyg->yy_did_buffer_switch_on_eof = 1;
 	}
 }
@@ -1565,9 +1742,9 @@ void cmCommandArgument_yypop_buffer_state (yyscan_t yyscanner)
 /* Allocates the stack if it does not exist.
  *  Guarantees space for at least one push.
  */
-static void cmCommandArgument_yyensure_buffer_stack (yyscan_t yyscanner)
+static void yyensure_buffer_stack (yyscan_t yyscanner)
 {
-	int num_to_alloc;
+	yy_size_t num_to_alloc;
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	if (!yyg->yy_buffer_stack) {
@@ -1577,11 +1754,11 @@ static void cmCommandArgument_yyensure_buffer_stack (yyscan_t yyscanner)
 		 * immediate realloc on the next call.
          */
       num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */
-		yyg->yy_buffer_stack = (struct yy_buffer_state**)cmCommandArgument_yyalloc
+		yyg->yy_buffer_stack = (struct yy_buffer_state**)yyalloc
 								(num_to_alloc * sizeof(struct yy_buffer_state*)
 								, yyscanner);
 		if ( ! yyg->yy_buffer_stack )
-			YY_FATAL_ERROR( "out of dynamic memory in cmCommandArgument_yyensure_buffer_stack()" );
+			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
 
 		memset(yyg->yy_buffer_stack, 0, num_to_alloc * sizeof(struct yy_buffer_state*));
 
@@ -1596,12 +1773,12 @@ static void cmCommandArgument_yyensure_buffer_stack (yyscan_t yyscanner)
 		yy_size_t grow_size = 8 /* arbitrary grow size */;
 
 		num_to_alloc = yyg->yy_buffer_stack_max + grow_size;
-		yyg->yy_buffer_stack = (struct yy_buffer_state**)cmCommandArgument_yyrealloc
+		yyg->yy_buffer_stack = (struct yy_buffer_state**)yyrealloc
 								(yyg->yy_buffer_stack,
 								num_to_alloc * sizeof(struct yy_buffer_state*)
 								, yyscanner);
 		if ( ! yyg->yy_buffer_stack )
-			YY_FATAL_ERROR( "out of dynamic memory in cmCommandArgument_yyensure_buffer_stack()" );
+			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
 
 		/* zero only the new slots.*/
 		memset(yyg->yy_buffer_stack + yyg->yy_buffer_stack_max, 0, grow_size * sizeof(struct yy_buffer_state*));
@@ -1615,7 +1792,7 @@ static void cmCommandArgument_yyensure_buffer_stack (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  */
-YY_BUFFER_STATE cmCommandArgument_yy_scan_buffer  (char * base, yy_size_t  size , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_buffer  (char * base, yy_size_t  size , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 
@@ -1625,11 +1802,11 @@ YY_BUFFER_STATE cmCommandArgument_yy_scan_buffer  (char * base, yy_size_t  size
 		/* They forgot to leave room for the EOB's. */
 		return NULL;
 
-	b = (YY_BUFFER_STATE) cmCommandArgument_yyalloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+	b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) , yyscanner );
 	if ( ! b )
-		YY_FATAL_ERROR( "out of dynamic memory in cmCommandArgument_yy_scan_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
 
-	b->yy_buf_size = size - 2;	/* "- 2" to take care of EOB's */
+	b->yy_buf_size = (int) (size - 2);	/* "- 2" to take care of EOB's */
 	b->yy_buf_pos = b->yy_ch_buf = base;
 	b->yy_is_our_buffer = 0;
 	b->yy_input_file = NULL;
@@ -1639,53 +1816,53 @@ YY_BUFFER_STATE cmCommandArgument_yy_scan_buffer  (char * base, yy_size_t  size
 	b->yy_fill_buffer = 0;
 	b->yy_buffer_status = YY_BUFFER_NEW;
 
-	cmCommandArgument_yy_switch_to_buffer(b ,yyscanner );
+	yy_switch_to_buffer( b , yyscanner );
 
 	return b;
 }
 
-/** Setup the input buffer state to scan a string. The next call to cmCommandArgument_yylex() will
+/** Setup the input buffer state to scan a string. The next call to yylex() will
  * scan from a @e copy of @a str.
  * @param yystr a NUL-terminated string to scan
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  * @note If you want to scan bytes that may contain NUL values, then use
- *       cmCommandArgument_yy_scan_bytes() instead.
+ *       yy_scan_bytes() instead.
  */
-YY_BUFFER_STATE cmCommandArgument_yy_scan_string (yyconst char * yystr , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_string (const char * yystr , yyscan_t yyscanner)
 {
 
-	return cmCommandArgument_yy_scan_bytes(yystr,(int) strlen(yystr) ,yyscanner);
+	return yy_scan_bytes( yystr, (int) strlen(yystr) , yyscanner);
 }
 
-/** Setup the input buffer state to scan the given bytes. The next call to cmCommandArgument_yylex() will
+/** Setup the input buffer state to scan the given bytes. The next call to yylex() will
  * scan from a @e copy of @a bytes.
  * @param yybytes the byte buffer to scan
  * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes.
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  */
-YY_BUFFER_STATE cmCommandArgument_yy_scan_bytes  (yyconst char * yybytes, int  _yybytes_len , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_bytes  (const char * yybytes, int  _yybytes_len , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 	char *buf;
 	yy_size_t n;
-	yy_size_t i;
+	int i;
 
 	/* Get memory for full buffer, including space for trailing EOB's. */
-	n = (yy_size_t) _yybytes_len + 2;
-	buf = (char *) cmCommandArgument_yyalloc(n ,yyscanner );
+	n = (yy_size_t) (_yybytes_len + 2);
+	buf = (char *) yyalloc( n , yyscanner );
 	if ( ! buf )
-		YY_FATAL_ERROR( "out of dynamic memory in cmCommandArgument_yy_scan_bytes()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
 
-	for ( i = 0; i < (size_t)_yybytes_len; ++i )
+	for ( i = 0; i < _yybytes_len; ++i )
 		buf[i] = yybytes[i];
 
 	buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR;
 
-	b = cmCommandArgument_yy_scan_buffer(buf,n ,yyscanner);
+	b = yy_scan_buffer( buf, n , yyscanner);
 	if ( ! b )
-		YY_FATAL_ERROR( "bad buffer in cmCommandArgument_yy_scan_bytes()" );
+		YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
 
 	/* It's okay to grow etc. this buffer, and we should throw it
 	 * away when we're done.
@@ -1699,11 +1876,11 @@ YY_BUFFER_STATE cmCommandArgument_yy_scan_bytes  (yyconst char * yybytes, int  _
 #define YY_EXIT_FAILURE 2
 #endif
 
-static void yynoreturn yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
+static void yynoreturn yy_fatal_error (const char* msg , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
-	(void) fprintf( stderr, "%s\n", msg );
+	fprintf( stderr, "%s\n", msg );
 	exit( YY_EXIT_FAILURE );
 }
 
@@ -1729,7 +1906,7 @@ static void yynoreturn yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
 /** Get the user-defined data for this scanner.
  * @param yyscanner The scanner object.
  */
-YY_EXTRA_TYPE cmCommandArgument_yyget_extra  (yyscan_t yyscanner)
+YY_EXTRA_TYPE yyget_extra  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyextra;
@@ -1738,7 +1915,7 @@ YY_EXTRA_TYPE cmCommandArgument_yyget_extra  (yyscan_t yyscanner)
 /** Get the current line number.
  * @param yyscanner The scanner object.
  */
-int cmCommandArgument_yyget_lineno  (yyscan_t yyscanner)
+int yyget_lineno  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -1751,7 +1928,7 @@ int cmCommandArgument_yyget_lineno  (yyscan_t yyscanner)
 /** Get the current column number.
  * @param yyscanner The scanner object.
  */
-int cmCommandArgument_yyget_column  (yyscan_t yyscanner)
+int yyget_column  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -1764,7 +1941,7 @@ int cmCommandArgument_yyget_column  (yyscan_t yyscanner)
 /** Get the input stream.
  * @param yyscanner The scanner object.
  */
-FILE *cmCommandArgument_yyget_in  (yyscan_t yyscanner)
+FILE *yyget_in  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyin;
@@ -1773,7 +1950,7 @@ FILE *cmCommandArgument_yyget_in  (yyscan_t yyscanner)
 /** Get the output stream.
  * @param yyscanner The scanner object.
  */
-FILE *cmCommandArgument_yyget_out  (yyscan_t yyscanner)
+FILE *yyget_out  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyout;
@@ -1782,7 +1959,7 @@ FILE *cmCommandArgument_yyget_out  (yyscan_t yyscanner)
 /** Get the length of the current token.
  * @param yyscanner The scanner object.
  */
-int cmCommandArgument_yyget_leng  (yyscan_t yyscanner)
+int yyget_leng  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyleng;
@@ -1792,7 +1969,7 @@ int cmCommandArgument_yyget_leng  (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  */
 
-char *cmCommandArgument_yyget_text  (yyscan_t yyscanner)
+char *yyget_text  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yytext;
@@ -1802,7 +1979,7 @@ char *cmCommandArgument_yyget_text  (yyscan_t yyscanner)
  * @param user_defined The data to be associated with this scanner.
  * @param yyscanner The scanner object.
  */
-void cmCommandArgument_yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
+void yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyextra = user_defined ;
@@ -1812,13 +1989,13 @@ void cmCommandArgument_yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yysca
  * @param _line_number line number
  * @param yyscanner The scanner object.
  */
-void cmCommandArgument_yyset_lineno (int  _line_number , yyscan_t yyscanner)
+void yyset_lineno (int  _line_number , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
         /* lineno is only valid if an input buffer exists. */
         if (! YY_CURRENT_BUFFER )
-           YY_FATAL_ERROR( "cmCommandArgument_yyset_lineno called with no buffer" );
+           YY_FATAL_ERROR( "yyset_lineno called with no buffer" );
 
     yylineno = _line_number;
 }
@@ -1827,13 +2004,13 @@ void cmCommandArgument_yyset_lineno (int  _line_number , yyscan_t yyscanner)
  * @param _column_no column number
  * @param yyscanner The scanner object.
  */
-void cmCommandArgument_yyset_column (int  _column_no , yyscan_t yyscanner)
+void yyset_column (int  _column_no , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
         /* column is only valid if an input buffer exists. */
         if (! YY_CURRENT_BUFFER )
-           YY_FATAL_ERROR( "cmCommandArgument_yyset_column called with no buffer" );
+           YY_FATAL_ERROR( "yyset_column called with no buffer" );
 
     yycolumn = _column_no;
 }
@@ -1842,27 +2019,27 @@ void cmCommandArgument_yyset_column (int  _column_no , yyscan_t yyscanner)
  * input buffer.
  * @param _in_str A readable stream.
  * @param yyscanner The scanner object.
- * @see cmCommandArgument_yy_switch_to_buffer
+ * @see yy_switch_to_buffer
  */
-void cmCommandArgument_yyset_in (FILE *  _in_str , yyscan_t yyscanner)
+void yyset_in (FILE *  _in_str , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyin = _in_str ;
 }
 
-void cmCommandArgument_yyset_out (FILE *  _out_str , yyscan_t yyscanner)
+void yyset_out (FILE *  _out_str , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyout = _out_str ;
 }
 
-int cmCommandArgument_yyget_debug  (yyscan_t yyscanner)
+int yyget_debug  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yy_flex_debug;
 }
 
-void cmCommandArgument_yyset_debug (int  _bdebug , yyscan_t yyscanner)
+void yyset_debug (int  _bdebug , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yy_flex_debug = _bdebug ;
@@ -1872,20 +2049,18 @@ void cmCommandArgument_yyset_debug (int  _bdebug , yyscan_t yyscanner)
 
 /* User-visible API */
 
-/* cmCommandArgument_yylex_init is special because it creates the scanner itself, so it is
+/* yylex_init is special because it creates the scanner itself, so it is
  * the ONLY reentrant function that doesn't take the scanner as the last argument.
  * That's why we explicitly handle the declaration, instead of using our macros.
  */
-
-int cmCommandArgument_yylex_init(yyscan_t* ptr_yy_globals)
-
+int yylex_init(yyscan_t* ptr_yy_globals)
 {
     if (ptr_yy_globals == NULL){
         errno = EINVAL;
         return 1;
     }
 
-    *ptr_yy_globals = (yyscan_t) cmCommandArgument_yyalloc ( sizeof( struct yyguts_t ), NULL );
+    *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), NULL );
 
     if (*ptr_yy_globals == NULL){
         errno = ENOMEM;
@@ -1898,27 +2073,25 @@ int cmCommandArgument_yylex_init(yyscan_t* ptr_yy_globals)
     return yy_init_globals ( *ptr_yy_globals );
 }
 
-/* cmCommandArgument_yylex_init_extra has the same functionality as cmCommandArgument_yylex_init, but follows the
+/* yylex_init_extra has the same functionality as yylex_init, but follows the
  * convention of taking the scanner as the last argument. Note however, that
  * this is a *pointer* to a scanner, as it will be allocated by this call (and
  * is the reason, too, why this function also must handle its own declaration).
- * The user defined value in the first argument will be available to cmCommandArgument_yyalloc in
+ * The user defined value in the first argument will be available to yyalloc in
  * the yyextra field.
  */
-
-int cmCommandArgument_yylex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_yy_globals )
-
+int yylex_init_extra( YY_EXTRA_TYPE yy_user_defined, yyscan_t* ptr_yy_globals )
 {
     struct yyguts_t dummy_yyguts;
 
-    cmCommandArgument_yyset_extra (yy_user_defined, &dummy_yyguts);
+    yyset_extra (yy_user_defined, &dummy_yyguts);
 
     if (ptr_yy_globals == NULL){
         errno = EINVAL;
         return 1;
     }
 
-    *ptr_yy_globals = (yyscan_t) cmCommandArgument_yyalloc ( sizeof( struct yyguts_t ), &dummy_yyguts );
+    *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), &dummy_yyguts );
 
     if (*ptr_yy_globals == NULL){
         errno = ENOMEM;
@@ -1929,7 +2102,7 @@ int cmCommandArgument_yylex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* p
     yy_init_globals. Leave at 0x00 for releases. */
     memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t));
 
-    cmCommandArgument_yyset_extra (yy_user_defined, *ptr_yy_globals);
+    yyset_extra (yy_user_defined, *ptr_yy_globals);
 
     return yy_init_globals ( *ptr_yy_globals );
 }
@@ -1938,7 +2111,7 @@ static int yy_init_globals (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     /* Initialization is the same as for the non-reentrant scanner.
-     * This function is called from cmCommandArgument_yylex_destroy(), so don't allocate here.
+     * This function is called from yylex_destroy(), so don't allocate here.
      */
 
     yyg->yy_buffer_stack = NULL;
@@ -1962,37 +2135,37 @@ static int yy_init_globals (yyscan_t yyscanner)
 #endif
 
     /* For future reference: Set errno on error, since we are called by
-     * cmCommandArgument_yylex_init()
+     * yylex_init()
      */
     return 0;
 }
 
-/* cmCommandArgument_yylex_destroy is for both reentrant and non-reentrant scanners. */
-int cmCommandArgument_yylex_destroy  (yyscan_t yyscanner)
+/* yylex_destroy is for both reentrant and non-reentrant scanners. */
+int yylex_destroy  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
     /* Pop the buffer stack, destroying each element. */
 	while(YY_CURRENT_BUFFER){
-		cmCommandArgument_yy_delete_buffer(YY_CURRENT_BUFFER ,yyscanner );
+		yy_delete_buffer( YY_CURRENT_BUFFER , yyscanner );
 		YY_CURRENT_BUFFER_LVALUE = NULL;
-		cmCommandArgument_yypop_buffer_state(yyscanner);
+		yypop_buffer_state(yyscanner);
 	}
 
 	/* Destroy the stack itself. */
-	cmCommandArgument_yyfree(yyg->yy_buffer_stack ,yyscanner);
+	yyfree(yyg->yy_buffer_stack , yyscanner);
 	yyg->yy_buffer_stack = NULL;
 
     /* Destroy the start condition stack. */
-        cmCommandArgument_yyfree(yyg->yy_start_stack ,yyscanner );
+        yyfree( yyg->yy_start_stack , yyscanner );
         yyg->yy_start_stack = NULL;
 
     /* Reset the globals. This is important in a non-reentrant scanner so the next time
-     * cmCommandArgument_yylex() is called, initialization will occur. */
+     * yylex() is called, initialization will occur. */
     yy_init_globals( yyscanner);
 
     /* Destroy the main struct (reentrant only). */
-    cmCommandArgument_yyfree ( yyscanner , yyscanner );
+    yyfree ( yyscanner , yyscanner );
     yyscanner = NULL;
     return 0;
 }
@@ -2002,7 +2175,7 @@ int cmCommandArgument_yylex_destroy  (yyscan_t yyscanner)
  */
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char* s1, yyconst char * s2, int n , yyscan_t yyscanner)
+static void yy_flex_strncpy (char* s1, const char * s2, int n , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
@@ -2014,7 +2187,7 @@ static void yy_flex_strncpy (char* s1, yyconst char * s2, int n , yyscan_t yysca
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * s , yyscan_t yyscanner)
+static int yy_flex_strlen (const char * s , yyscan_t yyscanner)
 {
 	int n;
 	for ( n = 0; s[n]; ++n )
@@ -2024,14 +2197,14 @@ static int yy_flex_strlen (yyconst char * s , yyscan_t yyscanner)
 }
 #endif
 
-void *cmCommandArgument_yyalloc (yy_size_t  size , yyscan_t yyscanner)
+void *yyalloc (yy_size_t  size , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
 	return malloc(size);
 }
 
-void *cmCommandArgument_yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
+void *yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
@@ -2046,19 +2219,15 @@ void *cmCommandArgument_yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yysca
 	return realloc(ptr, size);
 }
 
-void cmCommandArgument_yyfree (void * ptr , yyscan_t yyscanner)
+void yyfree (void * ptr , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
-	free( (char *) ptr );	/* see cmCommandArgument_yyrealloc() for (char *) cast */
+	free( (char *) ptr );	/* see yyrealloc() for (char *) cast */
 }
 
 #define YYTABLES_NAME "yytables"
 
-#line 127 "cmCommandArgumentLexer.in.l"
-
-
-
 /*--------------------------------------------------------------------------*/
 void cmCommandArgument_SetupEscapes(yyscan_t yyscanner, bool noEscapes)
 {
diff --git a/Source/LexerParser/cmCommandArgumentLexer.h b/Source/LexerParser/cmCommandArgumentLexer.h
index 82e87b557..567751349 100644
--- a/Source/LexerParser/cmCommandArgumentLexer.h
+++ b/Source/LexerParser/cmCommandArgumentLexer.h
@@ -2,10 +2,6 @@
 #define cmCommandArgument_yyHEADER_H 1
 #define cmCommandArgument_yyIN_HEADER 1
 
-#line 6 "cmCommandArgumentLexer.h"
-
-#line 8 "cmCommandArgumentLexer.h"
-
 #define FLEXINT_H 1
 #define  YY_INT_ALIGNED short int
 
@@ -14,11 +10,221 @@
 #define FLEX_SCANNER
 #define YY_FLEX_MAJOR_VERSION 2
 #define YY_FLEX_MINOR_VERSION 6
-#define YY_FLEX_SUBMINOR_VERSION 1
+#define YY_FLEX_SUBMINOR_VERSION 4
 #if YY_FLEX_SUBMINOR_VERSION > 0
 #define FLEX_BETA
 #endif
 
+#ifdef yy_create_buffer
+#define cmCommandArgument_yy_create_buffer_ALREADY_DEFINED
+#else
+#define yy_create_buffer cmCommandArgument_yy_create_buffer
+#endif
+
+#ifdef yy_delete_buffer
+#define cmCommandArgument_yy_delete_buffer_ALREADY_DEFINED
+#else
+#define yy_delete_buffer cmCommandArgument_yy_delete_buffer
+#endif
+
+#ifdef yy_scan_buffer
+#define cmCommandArgument_yy_scan_buffer_ALREADY_DEFINED
+#else
+#define yy_scan_buffer cmCommandArgument_yy_scan_buffer
+#endif
+
+#ifdef yy_scan_string
+#define cmCommandArgument_yy_scan_string_ALREADY_DEFINED
+#else
+#define yy_scan_string cmCommandArgument_yy_scan_string
+#endif
+
+#ifdef yy_scan_bytes
+#define cmCommandArgument_yy_scan_bytes_ALREADY_DEFINED
+#else
+#define yy_scan_bytes cmCommandArgument_yy_scan_bytes
+#endif
+
+#ifdef yy_init_buffer
+#define cmCommandArgument_yy_init_buffer_ALREADY_DEFINED
+#else
+#define yy_init_buffer cmCommandArgument_yy_init_buffer
+#endif
+
+#ifdef yy_flush_buffer
+#define cmCommandArgument_yy_flush_buffer_ALREADY_DEFINED
+#else
+#define yy_flush_buffer cmCommandArgument_yy_flush_buffer
+#endif
+
+#ifdef yy_load_buffer_state
+#define cmCommandArgument_yy_load_buffer_state_ALREADY_DEFINED
+#else
+#define yy_load_buffer_state cmCommandArgument_yy_load_buffer_state
+#endif
+
+#ifdef yy_switch_to_buffer
+#define cmCommandArgument_yy_switch_to_buffer_ALREADY_DEFINED
+#else
+#define yy_switch_to_buffer cmCommandArgument_yy_switch_to_buffer
+#endif
+
+#ifdef yypush_buffer_state
+#define cmCommandArgument_yypush_buffer_state_ALREADY_DEFINED
+#else
+#define yypush_buffer_state cmCommandArgument_yypush_buffer_state
+#endif
+
+#ifdef yypop_buffer_state
+#define cmCommandArgument_yypop_buffer_state_ALREADY_DEFINED
+#else
+#define yypop_buffer_state cmCommandArgument_yypop_buffer_state
+#endif
+
+#ifdef yyensure_buffer_stack
+#define cmCommandArgument_yyensure_buffer_stack_ALREADY_DEFINED
+#else
+#define yyensure_buffer_stack cmCommandArgument_yyensure_buffer_stack
+#endif
+
+#ifdef yylex
+#define cmCommandArgument_yylex_ALREADY_DEFINED
+#else
+#define yylex cmCommandArgument_yylex
+#endif
+
+#ifdef yyrestart
+#define cmCommandArgument_yyrestart_ALREADY_DEFINED
+#else
+#define yyrestart cmCommandArgument_yyrestart
+#endif
+
+#ifdef yylex_init
+#define cmCommandArgument_yylex_init_ALREADY_DEFINED
+#else
+#define yylex_init cmCommandArgument_yylex_init
+#endif
+
+#ifdef yylex_init_extra
+#define cmCommandArgument_yylex_init_extra_ALREADY_DEFINED
+#else
+#define yylex_init_extra cmCommandArgument_yylex_init_extra
+#endif
+
+#ifdef yylex_destroy
+#define cmCommandArgument_yylex_destroy_ALREADY_DEFINED
+#else
+#define yylex_destroy cmCommandArgument_yylex_destroy
+#endif
+
+#ifdef yyget_debug
+#define cmCommandArgument_yyget_debug_ALREADY_DEFINED
+#else
+#define yyget_debug cmCommandArgument_yyget_debug
+#endif
+
+#ifdef yyset_debug
+#define cmCommandArgument_yyset_debug_ALREADY_DEFINED
+#else
+#define yyset_debug cmCommandArgument_yyset_debug
+#endif
+
+#ifdef yyget_extra
+#define cmCommandArgument_yyget_extra_ALREADY_DEFINED
+#else
+#define yyget_extra cmCommandArgument_yyget_extra
+#endif
+
+#ifdef yyset_extra
+#define cmCommandArgument_yyset_extra_ALREADY_DEFINED
+#else
+#define yyset_extra cmCommandArgument_yyset_extra
+#endif
+
+#ifdef yyget_in
+#define cmCommandArgument_yyget_in_ALREADY_DEFINED
+#else
+#define yyget_in cmCommandArgument_yyget_in
+#endif
+
+#ifdef yyset_in
+#define cmCommandArgument_yyset_in_ALREADY_DEFINED
+#else
+#define yyset_in cmCommandArgument_yyset_in
+#endif
+
+#ifdef yyget_out
+#define cmCommandArgument_yyget_out_ALREADY_DEFINED
+#else
+#define yyget_out cmCommandArgument_yyget_out
+#endif
+
+#ifdef yyset_out
+#define cmCommandArgument_yyset_out_ALREADY_DEFINED
+#else
+#define yyset_out cmCommandArgument_yyset_out
+#endif
+
+#ifdef yyget_leng
+#define cmCommandArgument_yyget_leng_ALREADY_DEFINED
+#else
+#define yyget_leng cmCommandArgument_yyget_leng
+#endif
+
+#ifdef yyget_text
+#define cmCommandArgument_yyget_text_ALREADY_DEFINED
+#else
+#define yyget_text cmCommandArgument_yyget_text
+#endif
+
+#ifdef yyget_lineno
+#define cmCommandArgument_yyget_lineno_ALREADY_DEFINED
+#else
+#define yyget_lineno cmCommandArgument_yyget_lineno
+#endif
+
+#ifdef yyset_lineno
+#define cmCommandArgument_yyset_lineno_ALREADY_DEFINED
+#else
+#define yyset_lineno cmCommandArgument_yyset_lineno
+#endif
+
+#ifdef yyget_column
+#define cmCommandArgument_yyget_column_ALREADY_DEFINED
+#else
+#define yyget_column cmCommandArgument_yyget_column
+#endif
+
+#ifdef yyset_column
+#define cmCommandArgument_yyset_column_ALREADY_DEFINED
+#else
+#define yyset_column cmCommandArgument_yyset_column
+#endif
+
+#ifdef yywrap
+#define cmCommandArgument_yywrap_ALREADY_DEFINED
+#else
+#define yywrap cmCommandArgument_yywrap
+#endif
+
+#ifdef yyalloc
+#define cmCommandArgument_yyalloc_ALREADY_DEFINED
+#else
+#define yyalloc cmCommandArgument_yyalloc
+#endif
+
+#ifdef yyrealloc
+#define cmCommandArgument_yyrealloc_ALREADY_DEFINED
+#else
+#define yyrealloc cmCommandArgument_yyrealloc
+#endif
+
+#ifdef yyfree
+#define cmCommandArgument_yyfree_ALREADY_DEFINED
+#else
+#define yyfree cmCommandArgument_yyfree
+#endif
+
 /* First, we deal with  platform-specific or compiler-specific issues. */
 
 /* begin standard C headers. */
@@ -89,10 +295,16 @@ typedef unsigned int flex_uint32_t;
 #define UINT32_MAX             (4294967295U)
 #endif
 
+#ifndef SIZE_MAX
+#define SIZE_MAX               (~(size_t)0)
+#endif
+
 #endif /* ! C99 */
 
 #endif /* ! FLEXINT_H */
 
+/* begin standard C++ headers. */
+
 /* TODO: this is always defined, so inline it */
 #define yyconst const
 
@@ -193,21 +405,21 @@ struct yy_buffer_state
 	};
 #endif /* !YY_STRUCT_YY_BUFFER_STATE */
 
-void cmCommandArgument_yyrestart (FILE *input_file ,yyscan_t yyscanner );
-void cmCommandArgument_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmCommandArgument_yy_create_buffer (FILE *file,int size ,yyscan_t yyscanner );
-void cmCommandArgument_yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmCommandArgument_yy_flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmCommandArgument_yypush_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-void cmCommandArgument_yypop_buffer_state (yyscan_t yyscanner );
+void yyrestart ( FILE *input_file , yyscan_t yyscanner );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size , yyscan_t yyscanner );
+void yy_delete_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yy_flush_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+void yypop_buffer_state ( yyscan_t yyscanner );
 
-YY_BUFFER_STATE cmCommandArgument_yy_scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmCommandArgument_yy_scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmCommandArgument_yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len , yyscan_t yyscanner );
 
-void *cmCommandArgument_yyalloc (yy_size_t ,yyscan_t yyscanner );
-void *cmCommandArgument_yyrealloc (void *,yy_size_t ,yyscan_t yyscanner );
-void cmCommandArgument_yyfree (void * ,yyscan_t yyscanner );
+void *yyalloc ( yy_size_t , yyscan_t yyscanner );
+void *yyrealloc ( void *, yy_size_t , yyscan_t yyscanner );
+void yyfree ( void * , yyscan_t yyscanner );
 
 /* Begin user sect3 */
 
@@ -227,42 +439,42 @@ void cmCommandArgument_yyfree (void * ,yyscan_t yyscanner );
 #define YY_EXTRA_TYPE void *
 #endif
 
-int cmCommandArgument_yylex_init (yyscan_t* scanner);
+int yylex_init (yyscan_t* scanner);
 
-int cmCommandArgument_yylex_init_extra (YY_EXTRA_TYPE user_defined,yyscan_t* scanner);
+int yylex_init_extra ( YY_EXTRA_TYPE user_defined, yyscan_t* scanner);
 
 /* Accessor methods to globals.
    These are made visible to non-reentrant scanners for convenience. */
 
-int cmCommandArgument_yylex_destroy (yyscan_t yyscanner );
+int yylex_destroy ( yyscan_t yyscanner );
 
-int cmCommandArgument_yyget_debug (yyscan_t yyscanner );
+int yyget_debug ( yyscan_t yyscanner );
 
-void cmCommandArgument_yyset_debug (int debug_flag ,yyscan_t yyscanner );
+void yyset_debug ( int debug_flag , yyscan_t yyscanner );
 
-YY_EXTRA_TYPE cmCommandArgument_yyget_extra (yyscan_t yyscanner );
+YY_EXTRA_TYPE yyget_extra ( yyscan_t yyscanner );
 
-void cmCommandArgument_yyset_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner );
+void yyset_extra ( YY_EXTRA_TYPE user_defined , yyscan_t yyscanner );
 
-FILE *cmCommandArgument_yyget_in (yyscan_t yyscanner );
+FILE *yyget_in ( yyscan_t yyscanner );
 
-void cmCommandArgument_yyset_in  (FILE * _in_str ,yyscan_t yyscanner );
+void yyset_in  ( FILE * _in_str , yyscan_t yyscanner );
 
-FILE *cmCommandArgument_yyget_out (yyscan_t yyscanner );
+FILE *yyget_out ( yyscan_t yyscanner );
 
-void cmCommandArgument_yyset_out  (FILE * _out_str ,yyscan_t yyscanner );
+void yyset_out  ( FILE * _out_str , yyscan_t yyscanner );
 
-			int cmCommandArgument_yyget_leng (yyscan_t yyscanner );
+			int yyget_leng ( yyscan_t yyscanner );
 
-char *cmCommandArgument_yyget_text (yyscan_t yyscanner );
+char *yyget_text ( yyscan_t yyscanner );
 
-int cmCommandArgument_yyget_lineno (yyscan_t yyscanner );
+int yyget_lineno ( yyscan_t yyscanner );
 
-void cmCommandArgument_yyset_lineno (int _line_number ,yyscan_t yyscanner );
+void yyset_lineno ( int _line_number , yyscan_t yyscanner );
 
-int cmCommandArgument_yyget_column  (yyscan_t yyscanner );
+int yyget_column  ( yyscan_t yyscanner );
 
-void cmCommandArgument_yyset_column (int _column_no ,yyscan_t yyscanner );
+void yyset_column ( int _column_no , yyscan_t yyscanner );
 
 /* Macros after this point can all be overridden by user definitions in
  * section 1.
@@ -270,18 +482,18 @@ void cmCommandArgument_yyset_column (int _column_no ,yyscan_t yyscanner );
 
 #ifndef YY_SKIP_YYWRAP
 #ifdef __cplusplus
-extern "C" int cmCommandArgument_yywrap (yyscan_t yyscanner );
+extern "C" int yywrap ( yyscan_t yyscanner );
 #else
-extern int cmCommandArgument_yywrap (yyscan_t yyscanner );
+extern int yywrap ( yyscan_t yyscanner );
 #endif
 #endif
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char *,yyconst char *,int ,yyscan_t yyscanner);
+static void yy_flex_strncpy ( char *, const char *, int , yyscan_t yyscanner);
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
+static int yy_flex_strlen ( const char * , yyscan_t yyscanner);
 #endif
 
 #ifndef YY_NO_INPUT
@@ -309,9 +521,9 @@ static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
 #ifndef YY_DECL
 #define YY_DECL_IS_OURS 1
 
-extern int cmCommandArgument_yylex (yyscan_t yyscanner);
+extern int yylex (yyscan_t yyscanner);
 
-#define YY_DECL int cmCommandArgument_yylex (yyscan_t yyscanner)
+#define YY_DECL int yylex (yyscan_t yyscanner)
 #endif /* !YY_DECL */
 
 /* yy_get_previous_state - get the state just before the EOB char was reached */
@@ -328,9 +540,150 @@ extern int cmCommandArgument_yylex (yyscan_t yyscanner);
 #undef YY_DECL
 #endif
 
-#line 127 "cmCommandArgumentLexer.in.l"
-
+#ifndef cmCommandArgument_yy_create_buffer_ALREADY_DEFINED
+#undef yy_create_buffer
+#endif
+#ifndef cmCommandArgument_yy_delete_buffer_ALREADY_DEFINED
+#undef yy_delete_buffer
+#endif
+#ifndef cmCommandArgument_yy_scan_buffer_ALREADY_DEFINED
+#undef yy_scan_buffer
+#endif
+#ifndef cmCommandArgument_yy_scan_string_ALREADY_DEFINED
+#undef yy_scan_string
+#endif
+#ifndef cmCommandArgument_yy_scan_bytes_ALREADY_DEFINED
+#undef yy_scan_bytes
+#endif
+#ifndef cmCommandArgument_yy_init_buffer_ALREADY_DEFINED
+#undef yy_init_buffer
+#endif
+#ifndef cmCommandArgument_yy_flush_buffer_ALREADY_DEFINED
+#undef yy_flush_buffer
+#endif
+#ifndef cmCommandArgument_yy_load_buffer_state_ALREADY_DEFINED
+#undef yy_load_buffer_state
+#endif
+#ifndef cmCommandArgument_yy_switch_to_buffer_ALREADY_DEFINED
+#undef yy_switch_to_buffer
+#endif
+#ifndef cmCommandArgument_yypush_buffer_state_ALREADY_DEFINED
+#undef yypush_buffer_state
+#endif
+#ifndef cmCommandArgument_yypop_buffer_state_ALREADY_DEFINED
+#undef yypop_buffer_state
+#endif
+#ifndef cmCommandArgument_yyensure_buffer_stack_ALREADY_DEFINED
+#undef yyensure_buffer_stack
+#endif
+#ifndef cmCommandArgument_yylex_ALREADY_DEFINED
+#undef yylex
+#endif
+#ifndef cmCommandArgument_yyrestart_ALREADY_DEFINED
+#undef yyrestart
+#endif
+#ifndef cmCommandArgument_yylex_init_ALREADY_DEFINED
+#undef yylex_init
+#endif
+#ifndef cmCommandArgument_yylex_init_extra_ALREADY_DEFINED
+#undef yylex_init_extra
+#endif
+#ifndef cmCommandArgument_yylex_destroy_ALREADY_DEFINED
+#undef yylex_destroy
+#endif
+#ifndef cmCommandArgument_yyget_debug_ALREADY_DEFINED
+#undef yyget_debug
+#endif
+#ifndef cmCommandArgument_yyset_debug_ALREADY_DEFINED
+#undef yyset_debug
+#endif
+#ifndef cmCommandArgument_yyget_extra_ALREADY_DEFINED
+#undef yyget_extra
+#endif
+#ifndef cmCommandArgument_yyset_extra_ALREADY_DEFINED
+#undef yyset_extra
+#endif
+#ifndef cmCommandArgument_yyget_in_ALREADY_DEFINED
+#undef yyget_in
+#endif
+#ifndef cmCommandArgument_yyset_in_ALREADY_DEFINED
+#undef yyset_in
+#endif
+#ifndef cmCommandArgument_yyget_out_ALREADY_DEFINED
+#undef yyget_out
+#endif
+#ifndef cmCommandArgument_yyset_out_ALREADY_DEFINED
+#undef yyset_out
+#endif
+#ifndef cmCommandArgument_yyget_leng_ALREADY_DEFINED
+#undef yyget_leng
+#endif
+#ifndef cmCommandArgument_yyget_text_ALREADY_DEFINED
+#undef yyget_text
+#endif
+#ifndef cmCommandArgument_yyget_lineno_ALREADY_DEFINED
+#undef yyget_lineno
+#endif
+#ifndef cmCommandArgument_yyset_lineno_ALREADY_DEFINED
+#undef yyset_lineno
+#endif
+#ifndef cmCommandArgument_yyget_column_ALREADY_DEFINED
+#undef yyget_column
+#endif
+#ifndef cmCommandArgument_yyset_column_ALREADY_DEFINED
+#undef yyset_column
+#endif
+#ifndef cmCommandArgument_yywrap_ALREADY_DEFINED
+#undef yywrap
+#endif
+#ifndef cmCommandArgument_yyget_lval_ALREADY_DEFINED
+#undef yyget_lval
+#endif
+#ifndef cmCommandArgument_yyset_lval_ALREADY_DEFINED
+#undef yyset_lval
+#endif
+#ifndef cmCommandArgument_yyget_lloc_ALREADY_DEFINED
+#undef yyget_lloc
+#endif
+#ifndef cmCommandArgument_yyset_lloc_ALREADY_DEFINED
+#undef yyset_lloc
+#endif
+#ifndef cmCommandArgument_yyalloc_ALREADY_DEFINED
+#undef yyalloc
+#endif
+#ifndef cmCommandArgument_yyrealloc_ALREADY_DEFINED
+#undef yyrealloc
+#endif
+#ifndef cmCommandArgument_yyfree_ALREADY_DEFINED
+#undef yyfree
+#endif
+#ifndef cmCommandArgument_yytext_ALREADY_DEFINED
+#undef yytext
+#endif
+#ifndef cmCommandArgument_yyleng_ALREADY_DEFINED
+#undef yyleng
+#endif
+#ifndef cmCommandArgument_yyin_ALREADY_DEFINED
+#undef yyin
+#endif
+#ifndef cmCommandArgument_yyout_ALREADY_DEFINED
+#undef yyout
+#endif
+#ifndef cmCommandArgument_yy_flex_debug_ALREADY_DEFINED
+#undef yy_flex_debug
+#endif
+#ifndef cmCommandArgument_yylineno_ALREADY_DEFINED
+#undef yylineno
+#endif
+#ifndef cmCommandArgument_yytables_fload_ALREADY_DEFINED
+#undef yytables_fload
+#endif
+#ifndef cmCommandArgument_yytables_destroy_ALREADY_DEFINED
+#undef yytables_destroy
+#endif
+#ifndef cmCommandArgument_yyTABLES_NAME_ALREADY_DEFINED
+#undef yyTABLES_NAME
+#endif
 
-#line 335 "cmCommandArgumentLexer.h"
 #undef cmCommandArgument_yyIN_HEADER
 #endif /* cmCommandArgument_yyHEADER_H */
diff --git a/Source/LexerParser/cmCommandArgumentLexer.in.l b/Source/LexerParser/cmCommandArgumentLexer.in.l
index e3a80948c..acf18f3a7 100644
--- a/Source/LexerParser/cmCommandArgumentLexer.in.l
+++ b/Source/LexerParser/cmCommandArgumentLexer.in.l
@@ -7,13 +7,12 @@ This file must be translated to C++ and modified to build everywhere.
 
 Run flex >= 2.6 like this:
 
-  flex --nounistd -DFLEXINT_H --prefix=cmCommandArgument_yy --header-file=cmCommandArgumentLexer.h -ocmCommandArgumentLexer.cxx cmCommandArgumentLexer.in.l
+  flex --nounistd -DFLEXINT_H --noline --header-file=cmCommandArgumentLexer.h -ocmCommandArgumentLexer.cxx cmCommandArgumentLexer.in.l
 
 Modify cmCommandArgumentLexer.cxx:
-  - remove trailing whitespace: sed -i 's/\s*$//' cmCommandArgumentLexer.h cmCommandArgumentLexer.cxx
-  - remove blank lines at end of file
-  - #include "cmStandardLexer.h" at the top
-  - add cast in yy_scan_bytes for loop condition of _yybytes_len to size_t
+  - remove trailing whitespace:              sed -i 's/\s*$//' cmCommandArgumentLexer.h cmCommandArgumentLexer.cxx
+  - remove blank lines at end of file:       sed -i '${/^$/d;}' cmCommandArgumentLexer.h cmCommandArgumentLexer.cxx
+  - #include "cmStandardLexer.h" at the top: sed -i '1i#include "cmStandardLexer.h"' cmCommandArgumentLexer.cxx
 
 */
 
@@ -32,6 +31,8 @@ Modify cmCommandArgumentLexer.cxx:
 /*--------------------------------------------------------------------------*/
 %}
 
+%option prefix="cmCommandArgument_yy"
+
 %option reentrant
 %option noyywrap
 %option nounput
diff --git a/Source/LexerParser/cmDependsJavaLexer.cxx b/Source/LexerParser/cmDependsJavaLexer.cxx
index 8159f47bb..36cac61f9 100644
--- a/Source/LexerParser/cmDependsJavaLexer.cxx
+++ b/Source/LexerParser/cmDependsJavaLexer.cxx
@@ -1,7 +1,4 @@
 #include "cmStandardLexer.h"
-#line 2 "cmDependsJavaLexer.cxx"
-
-#line 4 "cmDependsJavaLexer.cxx"
 
 #define FLEXINT_H 1
 #define  YY_INT_ALIGNED short int
@@ -11,11 +8,221 @@
 #define FLEX_SCANNER
 #define YY_FLEX_MAJOR_VERSION 2
 #define YY_FLEX_MINOR_VERSION 6
-#define YY_FLEX_SUBMINOR_VERSION 1
+#define YY_FLEX_SUBMINOR_VERSION 4
 #if YY_FLEX_SUBMINOR_VERSION > 0
 #define FLEX_BETA
 #endif
 
+#ifdef yy_create_buffer
+#define cmDependsJava_yy_create_buffer_ALREADY_DEFINED
+#else
+#define yy_create_buffer cmDependsJava_yy_create_buffer
+#endif
+
+#ifdef yy_delete_buffer
+#define cmDependsJava_yy_delete_buffer_ALREADY_DEFINED
+#else
+#define yy_delete_buffer cmDependsJava_yy_delete_buffer
+#endif
+
+#ifdef yy_scan_buffer
+#define cmDependsJava_yy_scan_buffer_ALREADY_DEFINED
+#else
+#define yy_scan_buffer cmDependsJava_yy_scan_buffer
+#endif
+
+#ifdef yy_scan_string
+#define cmDependsJava_yy_scan_string_ALREADY_DEFINED
+#else
+#define yy_scan_string cmDependsJava_yy_scan_string
+#endif
+
+#ifdef yy_scan_bytes
+#define cmDependsJava_yy_scan_bytes_ALREADY_DEFINED
+#else
+#define yy_scan_bytes cmDependsJava_yy_scan_bytes
+#endif
+
+#ifdef yy_init_buffer
+#define cmDependsJava_yy_init_buffer_ALREADY_DEFINED
+#else
+#define yy_init_buffer cmDependsJava_yy_init_buffer
+#endif
+
+#ifdef yy_flush_buffer
+#define cmDependsJava_yy_flush_buffer_ALREADY_DEFINED
+#else
+#define yy_flush_buffer cmDependsJava_yy_flush_buffer
+#endif
+
+#ifdef yy_load_buffer_state
+#define cmDependsJava_yy_load_buffer_state_ALREADY_DEFINED
+#else
+#define yy_load_buffer_state cmDependsJava_yy_load_buffer_state
+#endif
+
+#ifdef yy_switch_to_buffer
+#define cmDependsJava_yy_switch_to_buffer_ALREADY_DEFINED
+#else
+#define yy_switch_to_buffer cmDependsJava_yy_switch_to_buffer
+#endif
+
+#ifdef yypush_buffer_state
+#define cmDependsJava_yypush_buffer_state_ALREADY_DEFINED
+#else
+#define yypush_buffer_state cmDependsJava_yypush_buffer_state
+#endif
+
+#ifdef yypop_buffer_state
+#define cmDependsJava_yypop_buffer_state_ALREADY_DEFINED
+#else
+#define yypop_buffer_state cmDependsJava_yypop_buffer_state
+#endif
+
+#ifdef yyensure_buffer_stack
+#define cmDependsJava_yyensure_buffer_stack_ALREADY_DEFINED
+#else
+#define yyensure_buffer_stack cmDependsJava_yyensure_buffer_stack
+#endif
+
+#ifdef yylex
+#define cmDependsJava_yylex_ALREADY_DEFINED
+#else
+#define yylex cmDependsJava_yylex
+#endif
+
+#ifdef yyrestart
+#define cmDependsJava_yyrestart_ALREADY_DEFINED
+#else
+#define yyrestart cmDependsJava_yyrestart
+#endif
+
+#ifdef yylex_init
+#define cmDependsJava_yylex_init_ALREADY_DEFINED
+#else
+#define yylex_init cmDependsJava_yylex_init
+#endif
+
+#ifdef yylex_init_extra
+#define cmDependsJava_yylex_init_extra_ALREADY_DEFINED
+#else
+#define yylex_init_extra cmDependsJava_yylex_init_extra
+#endif
+
+#ifdef yylex_destroy
+#define cmDependsJava_yylex_destroy_ALREADY_DEFINED
+#else
+#define yylex_destroy cmDependsJava_yylex_destroy
+#endif
+
+#ifdef yyget_debug
+#define cmDependsJava_yyget_debug_ALREADY_DEFINED
+#else
+#define yyget_debug cmDependsJava_yyget_debug
+#endif
+
+#ifdef yyset_debug
+#define cmDependsJava_yyset_debug_ALREADY_DEFINED
+#else
+#define yyset_debug cmDependsJava_yyset_debug
+#endif
+
+#ifdef yyget_extra
+#define cmDependsJava_yyget_extra_ALREADY_DEFINED
+#else
+#define yyget_extra cmDependsJava_yyget_extra
+#endif
+
+#ifdef yyset_extra
+#define cmDependsJava_yyset_extra_ALREADY_DEFINED
+#else
+#define yyset_extra cmDependsJava_yyset_extra
+#endif
+
+#ifdef yyget_in
+#define cmDependsJava_yyget_in_ALREADY_DEFINED
+#else
+#define yyget_in cmDependsJava_yyget_in
+#endif
+
+#ifdef yyset_in
+#define cmDependsJava_yyset_in_ALREADY_DEFINED
+#else
+#define yyset_in cmDependsJava_yyset_in
+#endif
+
+#ifdef yyget_out
+#define cmDependsJava_yyget_out_ALREADY_DEFINED
+#else
+#define yyget_out cmDependsJava_yyget_out
+#endif
+
+#ifdef yyset_out
+#define cmDependsJava_yyset_out_ALREADY_DEFINED
+#else
+#define yyset_out cmDependsJava_yyset_out
+#endif
+
+#ifdef yyget_leng
+#define cmDependsJava_yyget_leng_ALREADY_DEFINED
+#else
+#define yyget_leng cmDependsJava_yyget_leng
+#endif
+
+#ifdef yyget_text
+#define cmDependsJava_yyget_text_ALREADY_DEFINED
+#else
+#define yyget_text cmDependsJava_yyget_text
+#endif
+
+#ifdef yyget_lineno
+#define cmDependsJava_yyget_lineno_ALREADY_DEFINED
+#else
+#define yyget_lineno cmDependsJava_yyget_lineno
+#endif
+
+#ifdef yyset_lineno
+#define cmDependsJava_yyset_lineno_ALREADY_DEFINED
+#else
+#define yyset_lineno cmDependsJava_yyset_lineno
+#endif
+
+#ifdef yyget_column
+#define cmDependsJava_yyget_column_ALREADY_DEFINED
+#else
+#define yyget_column cmDependsJava_yyget_column
+#endif
+
+#ifdef yyset_column
+#define cmDependsJava_yyset_column_ALREADY_DEFINED
+#else
+#define yyset_column cmDependsJava_yyset_column
+#endif
+
+#ifdef yywrap
+#define cmDependsJava_yywrap_ALREADY_DEFINED
+#else
+#define yywrap cmDependsJava_yywrap
+#endif
+
+#ifdef yyalloc
+#define cmDependsJava_yyalloc_ALREADY_DEFINED
+#else
+#define yyalloc cmDependsJava_yyalloc
+#endif
+
+#ifdef yyrealloc
+#define cmDependsJava_yyrealloc_ALREADY_DEFINED
+#else
+#define yyrealloc cmDependsJava_yyrealloc
+#endif
+
+#ifdef yyfree
+#define cmDependsJava_yyfree_ALREADY_DEFINED
+#else
+#define yyfree cmDependsJava_yyfree
+#endif
+
 /* First, we deal with  platform-specific or compiler-specific issues. */
 
 /* begin standard C headers. */
@@ -86,10 +293,16 @@ typedef unsigned int flex_uint32_t;
 #define UINT32_MAX             (4294967295U)
 #endif
 
+#ifndef SIZE_MAX
+#define SIZE_MAX               (~(size_t)0)
+#endif
+
 #endif /* ! C99 */
 
 #endif /* ! FLEXINT_H */
 
+/* begin standard C++ headers. */
+
 /* TODO: this is always defined, so inline it */
 #define yyconst const
 
@@ -102,12 +315,10 @@ typedef unsigned int flex_uint32_t;
 /* Returned upon end-of-file. */
 #define YY_NULL 0
 
-/* Promotes a possibly negative, possibly signed char to an unsigned
- * integer for use as an array index.  If the signed char is negative,
- * we want to instead treat it as an 8-bit unsigned char, hence the
- * double cast.
+/* Promotes a possibly negative, possibly signed char to an
+ *   integer in range [0..255] for use as an array index.
  */
-#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
+#define YY_SC_TO_UI(c) ((YY_CHAR) (c))
 
 /* An opaque pointer. */
 #ifndef YY_TYPEDEF_YY_SCANNER_T
@@ -131,20 +342,16 @@ typedef void* yyscan_t;
  * definition of BEGIN.
  */
 #define BEGIN yyg->yy_start = 1 + 2 *
-
 /* Translate the current start state into a value that can be later handed
  * to BEGIN to return to the state.  The YYSTATE alias is for lex
  * compatibility.
  */
 #define YY_START ((yyg->yy_start - 1) / 2)
 #define YYSTATE YY_START
-
 /* Action number for EOF rule of a given start state. */
 #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
-
 /* Special action meaning "start processing a new file". */
-#define YY_NEW_FILE cmDependsJava_yyrestart(yyin ,yyscanner )
-
+#define YY_NEW_FILE yyrestart( yyin , yyscanner )
 #define YY_END_OF_BUFFER_CHAR 0
 
 /* Size of default input buffer. */
@@ -194,7 +401,6 @@ typedef size_t yy_size_t;
 		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
 		} \
 	while ( 0 )
-
 #define unput(c) yyunput( c, yyg->yytext_ptr , yyscanner )
 
 #ifndef YY_STRUCT_YY_BUFFER_STATE
@@ -254,7 +460,7 @@ struct yy_buffer_state
 	 * possible backing-up.
 	 *
 	 * When we actually see the EOF, we change the status to "new"
-	 * (via cmDependsJava_yyrestart()), so that the user can continue scanning by
+	 * (via yyrestart()), so that the user can continue scanning by
 	 * just pointing yyin at a new input file.
 	 */
 #define YY_BUFFER_EOF_PENDING 2
@@ -271,73 +477,67 @@ struct yy_buffer_state
 #define YY_CURRENT_BUFFER ( yyg->yy_buffer_stack \
                           ? yyg->yy_buffer_stack[yyg->yy_buffer_stack_top] \
                           : NULL)
-
 /* Same as previous macro, but useful when we know that the buffer stack is not
  * NULL or when we need an lvalue. For internal use only.
  */
 #define YY_CURRENT_BUFFER_LVALUE yyg->yy_buffer_stack[yyg->yy_buffer_stack_top]
 
-void cmDependsJava_yyrestart (FILE *input_file ,yyscan_t yyscanner );
-void cmDependsJava_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmDependsJava_yy_create_buffer (FILE *file,int size ,yyscan_t yyscanner );
-void cmDependsJava_yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmDependsJava_yy_flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmDependsJava_yypush_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-void cmDependsJava_yypop_buffer_state (yyscan_t yyscanner );
+void yyrestart ( FILE *input_file , yyscan_t yyscanner );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size , yyscan_t yyscanner );
+void yy_delete_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yy_flush_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+void yypop_buffer_state ( yyscan_t yyscanner );
 
-static void cmDependsJava_yyensure_buffer_stack (yyscan_t yyscanner );
-static void cmDependsJava_yy_load_buffer_state (yyscan_t yyscanner );
-static void cmDependsJava_yy_init_buffer (YY_BUFFER_STATE b,FILE *file ,yyscan_t yyscanner );
+static void yyensure_buffer_stack ( yyscan_t yyscanner );
+static void yy_load_buffer_state ( yyscan_t yyscanner );
+static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file , yyscan_t yyscanner );
+#define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER , yyscanner)
 
-#define YY_FLUSH_BUFFER cmDependsJava_yy_flush_buffer(YY_CURRENT_BUFFER ,yyscanner)
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len , yyscan_t yyscanner );
 
-YY_BUFFER_STATE cmDependsJava_yy_scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmDependsJava_yy_scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmDependsJava_yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
-
-void *cmDependsJava_yyalloc (yy_size_t ,yyscan_t yyscanner );
-void *cmDependsJava_yyrealloc (void *,yy_size_t ,yyscan_t yyscanner );
-void cmDependsJava_yyfree (void * ,yyscan_t yyscanner );
-
-#define yy_new_buffer cmDependsJava_yy_create_buffer
+void *yyalloc ( yy_size_t , yyscan_t yyscanner );
+void *yyrealloc ( void *, yy_size_t , yyscan_t yyscanner );
+void yyfree ( void * , yyscan_t yyscanner );
 
+#define yy_new_buffer yy_create_buffer
 #define yy_set_interactive(is_interactive) \
 	{ \
 	if ( ! YY_CURRENT_BUFFER ){ \
-        cmDependsJava_yyensure_buffer_stack (yyscanner); \
+        yyensure_buffer_stack (yyscanner); \
 		YY_CURRENT_BUFFER_LVALUE =    \
-            cmDependsJava_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); \
 	} \
 	YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
 	}
-
 #define yy_set_bol(at_bol) \
 	{ \
 	if ( ! YY_CURRENT_BUFFER ){\
-        cmDependsJava_yyensure_buffer_stack (yyscanner); \
+        yyensure_buffer_stack (yyscanner); \
 		YY_CURRENT_BUFFER_LVALUE =    \
-            cmDependsJava_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); \
 	} \
 	YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
 	}
-
 #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
 
 /* Begin user sect3 */
 
 #define cmDependsJava_yywrap(yyscanner) (/*CONSTCOND*/1)
 #define YY_SKIP_YYWRAP
-
-typedef unsigned char YY_CHAR;
+typedef flex_uint8_t YY_CHAR;
 
 typedef int yy_state_type;
 
 #define yytext_ptr yytext_r
 
-static yy_state_type yy_get_previous_state (yyscan_t yyscanner );
-static yy_state_type yy_try_NUL_trans (yy_state_type current_state  ,yyscan_t yyscanner);
-static int yy_get_next_buffer (yyscan_t yyscanner );
-static void yynoreturn yy_fatal_error (yyconst char* msg ,yyscan_t yyscanner );
+static yy_state_type yy_get_previous_state ( yyscan_t yyscanner );
+static yy_state_type yy_try_NUL_trans ( yy_state_type current_state  , yyscan_t yyscanner);
+static int yy_get_next_buffer ( yyscan_t yyscanner );
+static void yynoreturn yy_fatal_error ( const char* msg , yyscan_t yyscanner );
 
 /* Done after the current pattern has been matched and before the
  * corresponding action - sets up yytext.
@@ -348,7 +548,6 @@ static void yynoreturn yy_fatal_error (yyconst char* msg ,yyscan_t yyscanner );
 	yyg->yy_hold_char = *yy_cp; \
 	*yy_cp = '\0'; \
 	yyg->yy_c_buf_p = yy_cp;
-
 #define YY_NUM_RULES 111
 #define YY_END_OF_BUFFER 112
 /* This struct is not used in this scanner,
@@ -358,7 +557,7 @@ struct yy_trans_info
 	flex_int32_t yy_verify;
 	flex_int32_t yy_nxt;
 	};
-static yyconst flex_int16_t yy_accept[327] =
+static const flex_int16_t yy_accept[327] =
     {   0,
         0,    0,    0,    0,    0,    0,  112,  110,  109,  109,
        77,    4,   73,   94,   60,  110,   93,   92,  105,   99,
@@ -398,7 +597,7 @@ static yyconst flex_int16_t yy_accept[327] =
        27,   29,  107,  107,   45,    0
     } ;
 
-static yyconst YY_CHAR yy_ec[256] =
+static const YY_CHAR yy_ec[256] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
         1,    2,    2,    1,    1,    1,    1,    1,    1,    1,
@@ -430,7 +629,7 @@ static yyconst YY_CHAR yy_ec[256] =
         1,    1,    1,    1,    1
     } ;
 
-static yyconst YY_CHAR yy_meta[65] =
+static const YY_CHAR yy_meta[65] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    2,    1,
         1,    1,    1,    1,    1,    1,    1,    3,    3,    3,
@@ -441,7 +640,7 @@ static yyconst YY_CHAR yy_meta[65] =
         1,    1,    1,    1
     } ;
 
-static yyconst flex_uint16_t yy_base[334] =
+static const flex_int16_t yy_base[334] =
     {   0,
         0,    0,  401,  400,   62,   63,  411,  414,  414,  414,
       386,  414,  414,  385,   61,  374,  414,  414,  383,   57,
@@ -482,7 +681,7 @@ static yyconst flex_uint16_t yy_base[334] =
       232,   96,  235
     } ;
 
-static yyconst flex_int16_t yy_def[334] =
+static const flex_int16_t yy_def[334] =
     {   0,
       326,    1,  327,  327,  328,  328,  326,  326,  326,  326,
       326,  326,  326,  326,  326,  329,  326,  326,  326,  326,
@@ -523,7 +722,7 @@ static yyconst flex_int16_t yy_def[334] =
       326,  326,  326
     } ;
 
-static yyconst flex_uint16_t yy_nxt[479] =
+static const flex_int16_t yy_nxt[479] =
     {   0,
         8,    9,   10,   11,   12,   13,   14,   15,   16,   17,
        18,   19,   20,   21,   22,   23,   24,   25,   26,   26,
@@ -579,7 +778,7 @@ static yyconst flex_uint16_t yy_nxt[479] =
       326,  326,  326,  326,  326,  326,  326,  326
     } ;
 
-static yyconst flex_int16_t yy_chk[479] =
+static const flex_int16_t yy_chk[479] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
@@ -642,8 +841,6 @@ static yyconst flex_int16_t yy_chk[479] =
 #define yymore() yymore_used_but_not_detected
 #define YY_MORE_ADJ 0
 #define YY_RESTORE_YY_MORE_OFFSET
-#line 1 "cmDependsJavaLexer.in.l"
-#line 2 "cmDependsJavaLexer.in.l"
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
 /*
@@ -652,13 +849,12 @@ This file must be translated to C++ and modified to build everywhere.
 
 Run flex >= 2.6 like this:
 
-  flex --nounistd -DFLEXINT_H --prefix=cmDependsJava_yy --header-file=cmDependsJavaLexer.h -ocmDependsJavaLexer.cxx cmDependsJavaLexer.in.l
+  flex --nounistd -DFLEXINT_H --noline --header-file=cmDependsJavaLexer.h -ocmDependsJavaLexer.cxx cmDependsJavaLexer.in.l
 
 Modify cmDependsJavaLexer.cxx:
-  - remove trailing whitespace: sed -i 's/\s*$//' cmDependsJavaLexer.h cmDependsJavaLexer.cxx
-  - remove blank lines at end of file
-  - #include "cmStandardLexer.h" at the top
-  - add cast in cmDependsJava_yy_scan_bytes for loop condition of _yybytes_len to size_t
+  - remove trailing whitespace:              sed -i 's/\s*$//' cmDependsJavaLexer.h cmDependsJavaLexer.cxx
+  - remove blank lines at end of file:       sed -i '${/^$/d;}' cmDependsJavaLexer.h cmDependsJavaLexer.cxx
+  - #include "cmStandardLexer.h" at the top: sed -i '1i#include "cmStandardLexer.h"' cmDependsJavaLexer.cxx
 
 */
 
@@ -682,9 +878,6 @@ Modify cmDependsJavaLexer.cxx:
 
 /*--------------------------------------------------------------------------*/
 
-
-#line 686 "cmDependsJavaLexer.cxx"
-
 #define INITIAL 0
 #define comment 1
 #define string 2
@@ -727,44 +920,44 @@ struct yyguts_t
 
     }; /* end struct yyguts_t */
 
-static int yy_init_globals (yyscan_t yyscanner );
+static int yy_init_globals ( yyscan_t yyscanner );
 
-int cmDependsJava_yylex_init (yyscan_t* scanner);
+int yylex_init (yyscan_t* scanner);
 
-int cmDependsJava_yylex_init_extra (YY_EXTRA_TYPE user_defined,yyscan_t* scanner);
+int yylex_init_extra ( YY_EXTRA_TYPE user_defined, yyscan_t* scanner);
 
 /* Accessor methods to globals.
    These are made visible to non-reentrant scanners for convenience. */
 
-int cmDependsJava_yylex_destroy (yyscan_t yyscanner );
+int yylex_destroy ( yyscan_t yyscanner );
 
-int cmDependsJava_yyget_debug (yyscan_t yyscanner );
+int yyget_debug ( yyscan_t yyscanner );
 
-void cmDependsJava_yyset_debug (int debug_flag ,yyscan_t yyscanner );
+void yyset_debug ( int debug_flag , yyscan_t yyscanner );
 
-YY_EXTRA_TYPE cmDependsJava_yyget_extra (yyscan_t yyscanner );
+YY_EXTRA_TYPE yyget_extra ( yyscan_t yyscanner );
 
-void cmDependsJava_yyset_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner );
+void yyset_extra ( YY_EXTRA_TYPE user_defined , yyscan_t yyscanner );
 
-FILE *cmDependsJava_yyget_in (yyscan_t yyscanner );
+FILE *yyget_in ( yyscan_t yyscanner );
 
-void cmDependsJava_yyset_in  (FILE * _in_str ,yyscan_t yyscanner );
+void yyset_in  ( FILE * _in_str , yyscan_t yyscanner );
 
-FILE *cmDependsJava_yyget_out (yyscan_t yyscanner );
+FILE *yyget_out ( yyscan_t yyscanner );
 
-void cmDependsJava_yyset_out  (FILE * _out_str ,yyscan_t yyscanner );
+void yyset_out  ( FILE * _out_str , yyscan_t yyscanner );
 
-			int cmDependsJava_yyget_leng (yyscan_t yyscanner );
+			int yyget_leng ( yyscan_t yyscanner );
 
-char *cmDependsJava_yyget_text (yyscan_t yyscanner );
+char *yyget_text ( yyscan_t yyscanner );
 
-int cmDependsJava_yyget_lineno (yyscan_t yyscanner );
+int yyget_lineno ( yyscan_t yyscanner );
 
-void cmDependsJava_yyset_lineno (int _line_number ,yyscan_t yyscanner );
+void yyset_lineno ( int _line_number , yyscan_t yyscanner );
 
-int cmDependsJava_yyget_column  (yyscan_t yyscanner );
+int yyget_column  ( yyscan_t yyscanner );
 
-void cmDependsJava_yyset_column (int _column_no ,yyscan_t yyscanner );
+void yyset_column ( int _column_no , yyscan_t yyscanner );
 
 /* Macros after this point can all be overridden by user definitions in
  * section 1.
@@ -772,32 +965,31 @@ void cmDependsJava_yyset_column (int _column_no ,yyscan_t yyscanner );
 
 #ifndef YY_SKIP_YYWRAP
 #ifdef __cplusplus
-extern "C" int cmDependsJava_yywrap (yyscan_t yyscanner );
+extern "C" int yywrap ( yyscan_t yyscanner );
 #else
-extern int cmDependsJava_yywrap (yyscan_t yyscanner );
+extern int yywrap ( yyscan_t yyscanner );
 #endif
 #endif
 
 #ifndef YY_NO_UNPUT
 
-    static void yyunput (int c,char *buf_ptr  ,yyscan_t yyscanner);
+    static void yyunput ( int c, char *buf_ptr  , yyscan_t yyscanner);
 
 #endif
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char *,yyconst char *,int ,yyscan_t yyscanner);
+static void yy_flex_strncpy ( char *, const char *, int , yyscan_t yyscanner);
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
+static int yy_flex_strlen ( const char * , yyscan_t yyscanner);
 #endif
 
 #ifndef YY_NO_INPUT
-
 #ifdef __cplusplus
-static int yyinput (yyscan_t yyscanner );
+static int yyinput ( yyscan_t yyscanner );
 #else
-static int input (yyscan_t yyscanner );
+static int input ( yyscan_t yyscanner );
 #endif
 
 #endif
@@ -828,7 +1020,7 @@ static int input (yyscan_t yyscanner );
 	if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
 		{ \
 		int c = '*'; \
-		size_t n; \
+		int n; \
 		for ( n = 0; n < max_size && \
 			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
 			buf[n] = (char) c; \
@@ -841,7 +1033,7 @@ static int input (yyscan_t yyscanner );
 	else \
 		{ \
 		errno=0; \
-		while ( (result = (int) fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
+		while ( (result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin)) \
 			{ \
 			if( errno != EINTR) \
 				{ \
@@ -882,9 +1074,9 @@ static int input (yyscan_t yyscanner );
 #ifndef YY_DECL
 #define YY_DECL_IS_OURS 1
 
-extern int cmDependsJava_yylex (yyscan_t yyscanner);
+extern int yylex (yyscan_t yyscanner);
 
-#define YY_DECL int cmDependsJava_yylex (yyscan_t yyscanner)
+#define YY_DECL int yylex (yyscan_t yyscanner)
 #endif /* !YY_DECL */
 
 /* Code executed at the beginning of each rule, after yytext and yyleng
@@ -929,18 +1121,15 @@ YY_DECL
 			yyout = stdout;
 
 		if ( ! YY_CURRENT_BUFFER ) {
-			cmDependsJava_yyensure_buffer_stack (yyscanner);
+			yyensure_buffer_stack (yyscanner);
 			YY_CURRENT_BUFFER_LVALUE =
-				cmDependsJava_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+				yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner);
 		}
 
-		cmDependsJava_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 		}
 
 	{
-#line 48 "cmDependsJavaLexer.in.l"
-
-#line 943 "cmDependsJavaLexer.cxx"
 
 	while ( /*CONSTCOND*/1 )		/* loops until end-of-file is reached */
 		{
@@ -968,9 +1157,9 @@ yy_match:
 				{
 				yy_current_state = (int) yy_def[yy_current_state];
 				if ( yy_current_state >= 327 )
-					yy_c = yy_meta[(unsigned int) yy_c];
+					yy_c = yy_meta[yy_c];
 				}
-			yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
+			yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 			++yy_cp;
 			}
 		while ( yy_base[yy_current_state] != 414 );
@@ -999,539 +1188,432 @@ do_action:	/* This label is used only to access EOF actions. */
 
 case 1:
 YY_RULE_SETUP
-#line 49 "cmDependsJavaLexer.in.l"
 { BEGIN(comment); }
 	YY_BREAK
 case 2:
 YY_RULE_SETUP
-#line 50 "cmDependsJavaLexer.in.l"
 { BEGIN(INITIAL); }
 	YY_BREAK
 case 3:
 /* rule 3 can match eol */
 YY_RULE_SETUP
-#line 51 "cmDependsJavaLexer.in.l"
 {}
 	YY_BREAK
 case 4:
 YY_RULE_SETUP
-#line 53 "cmDependsJavaLexer.in.l"
 { BEGIN(string); }
 	YY_BREAK
 case 5:
 YY_RULE_SETUP
-#line 54 "cmDependsJavaLexer.in.l"
 { BEGIN(INITIAL); return jp_STRINGLITERAL; }
 	YY_BREAK
 case 6:
 YY_RULE_SETUP
-#line 55 "cmDependsJavaLexer.in.l"
 {}
 	YY_BREAK
 case 7:
 YY_RULE_SETUP
-#line 57 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_ABSTRACT; }
 	YY_BREAK
 case 8:
 YY_RULE_SETUP
-#line 58 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_ASSERT; }
 	YY_BREAK
 case 9:
 YY_RULE_SETUP
-#line 59 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_BOOLEAN_TYPE; }
 	YY_BREAK
 case 10:
 YY_RULE_SETUP
-#line 60 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_BREAK; }
 	YY_BREAK
 case 11:
 YY_RULE_SETUP
-#line 61 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_BYTE_TYPE; }
 	YY_BREAK
 case 12:
 YY_RULE_SETUP
-#line 62 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_CASE; }
 	YY_BREAK
 case 13:
 YY_RULE_SETUP
-#line 63 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_CATCH; }
 	YY_BREAK
 case 14:
 YY_RULE_SETUP
-#line 64 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_CHAR_TYPE; }
 	YY_BREAK
 case 15:
 YY_RULE_SETUP
-#line 65 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_CLASS; }
 	YY_BREAK
 case 16:
 YY_RULE_SETUP
-#line 66 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_CONTINUE; }
 	YY_BREAK
 case 17:
 YY_RULE_SETUP
-#line 67 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_DEFAULT; }
 	YY_BREAK
 case 18:
 YY_RULE_SETUP
-#line 68 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_DO; }
 	YY_BREAK
 case 19:
 YY_RULE_SETUP
-#line 69 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_DOUBLE_TYPE; }
 	YY_BREAK
 case 20:
 YY_RULE_SETUP
-#line 70 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_ELSE; }
 	YY_BREAK
 case 21:
 YY_RULE_SETUP
-#line 71 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_EXTENDS; }
 	YY_BREAK
 case 22:
 YY_RULE_SETUP
-#line 72 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_FINAL; }
 	YY_BREAK
 case 23:
 YY_RULE_SETUP
-#line 73 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_FINALLY; }
 	YY_BREAK
 case 24:
 YY_RULE_SETUP
-#line 74 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_FLOAT_TYPE; }
 	YY_BREAK
 case 25:
 YY_RULE_SETUP
-#line 75 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_FOR; }
 	YY_BREAK
 case 26:
 YY_RULE_SETUP
-#line 76 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_IF; }
 	YY_BREAK
 case 27:
 YY_RULE_SETUP
-#line 77 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_IMPLEMENTS; }
 	YY_BREAK
 case 28:
 YY_RULE_SETUP
-#line 78 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_IMPORT; }
 	YY_BREAK
 case 29:
 YY_RULE_SETUP
-#line 79 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_INSTANCEOF; }
 	YY_BREAK
 case 30:
 YY_RULE_SETUP
-#line 80 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_INT_TYPE; }
 	YY_BREAK
 case 31:
 YY_RULE_SETUP
-#line 81 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_INTERFACE; }
 	YY_BREAK
 case 32:
 YY_RULE_SETUP
-#line 82 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_LONG_TYPE; }
 	YY_BREAK
 case 33:
 YY_RULE_SETUP
-#line 83 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_NATIVE; }
 	YY_BREAK
 case 34:
 YY_RULE_SETUP
-#line 84 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_NEW; }
 	YY_BREAK
 case 35:
 YY_RULE_SETUP
-#line 85 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_PACKAGE; }
 	YY_BREAK
 case 36:
 YY_RULE_SETUP
-#line 86 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_PRIVATE; }
 	YY_BREAK
 case 37:
 YY_RULE_SETUP
-#line 87 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_PROTECTED; }
 	YY_BREAK
 case 38:
 YY_RULE_SETUP
-#line 88 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_PUBLIC; }
 	YY_BREAK
 case 39:
 YY_RULE_SETUP
-#line 89 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_RETURN; }
 	YY_BREAK
 case 40:
 YY_RULE_SETUP
-#line 90 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_SHORT_TYPE; }
 	YY_BREAK
 case 41:
 YY_RULE_SETUP
-#line 91 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_STATIC; }
 	YY_BREAK
 case 42:
 YY_RULE_SETUP
-#line 92 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_STRICTFP; }
 	YY_BREAK
 case 43:
 YY_RULE_SETUP
-#line 93 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_SUPER; }
 	YY_BREAK
 case 44:
 YY_RULE_SETUP
-#line 94 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_SWITCH; }
 	YY_BREAK
 case 45:
 YY_RULE_SETUP
-#line 95 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_SYNCHRONIZED; }
 	YY_BREAK
 case 46:
 YY_RULE_SETUP
-#line 96 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_THIS; }
 	YY_BREAK
 case 47:
 YY_RULE_SETUP
-#line 97 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_THROW; }
 	YY_BREAK
 case 48:
 YY_RULE_SETUP
-#line 98 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_THROWS; }
 	YY_BREAK
 case 49:
 YY_RULE_SETUP
-#line 99 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_TRANSIENT; }
 	YY_BREAK
 case 50:
 YY_RULE_SETUP
-#line 100 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_TRY; }
 	YY_BREAK
 case 51:
 YY_RULE_SETUP
-#line 101 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_VOID; }
 	YY_BREAK
 case 52:
 YY_RULE_SETUP
-#line 102 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_VOLATILE; }
 	YY_BREAK
 case 53:
 YY_RULE_SETUP
-#line 103 "cmDependsJavaLexer.in.l"
 { KEYWORD; return jp_WHILE; }
 	YY_BREAK
 case 54:
 YY_RULE_SETUP
-#line 105 "cmDependsJavaLexer.in.l"
 { PRIMITIVE; return jp_BOOLEANLITERAL; }
 	YY_BREAK
 case 55:
 /* rule 55 can match eol */
 YY_RULE_SETUP
-#line 106 "cmDependsJavaLexer.in.l"
 { PRIMITIVE; return jp_CHARACTERLITERAL; }
 	YY_BREAK
 case 56:
 YY_RULE_SETUP
-#line 107 "cmDependsJavaLexer.in.l"
 { PRIMITIVE; return jp_DECIMALINTEGERLITERAL; }
 	YY_BREAK
 case 57:
 YY_RULE_SETUP
-#line 108 "cmDependsJavaLexer.in.l"
 { PRIMITIVE; return jp_FLOATINGPOINTLITERAL; }
 	YY_BREAK
 case 58:
 YY_RULE_SETUP
-#line 109 "cmDependsJavaLexer.in.l"
 { PRIMITIVE; return jp_HEXINTEGERLITERAL; }
 	YY_BREAK
 case 59:
 YY_RULE_SETUP
-#line 110 "cmDependsJavaLexer.in.l"
 { PRIMITIVE; return jp_NULLLITERAL; }
 	YY_BREAK
 case 60:
 YY_RULE_SETUP
-#line 112 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_AND; }
 	YY_BREAK
 case 61:
 YY_RULE_SETUP
-#line 113 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_ANDAND; }
 	YY_BREAK
 case 62:
 YY_RULE_SETUP
-#line 114 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_ANDEQUALS; }
 	YY_BREAK
 case 63:
 YY_RULE_SETUP
-#line 115 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_BRACKETEND; }
 	YY_BREAK
 case 64:
 YY_RULE_SETUP
-#line 116 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_BRACKETSTART; }
 	YY_BREAK
 case 65:
 YY_RULE_SETUP
-#line 117 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_CARROT; }
 	YY_BREAK
 case 66:
 YY_RULE_SETUP
-#line 118 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_CARROTEQUALS; }
 	YY_BREAK
 case 67:
 YY_RULE_SETUP
-#line 119 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_COLON; }
 	YY_BREAK
 case 68:
 YY_RULE_SETUP
-#line 120 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_COMMA; }
 	YY_BREAK
 case 69:
 YY_RULE_SETUP
-#line 121 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_CURLYEND; }
 	YY_BREAK
 case 70:
 YY_RULE_SETUP
-#line 122 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_CURLYSTART; }
 	YY_BREAK
 case 71:
 YY_RULE_SETUP
-#line 123 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_DIVIDE; }
 	YY_BREAK
 case 72:
 YY_RULE_SETUP
-#line 124 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_DIVIDEEQUALS; }
 	YY_BREAK
 case 73:
 YY_RULE_SETUP
-#line 125 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_DOLLAR; }
 	YY_BREAK
 case 74:
 YY_RULE_SETUP
-#line 126 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_DOT; }
 	YY_BREAK
 case 75:
 YY_RULE_SETUP
-#line 127 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_EQUALS; }
 	YY_BREAK
 case 76:
 YY_RULE_SETUP
-#line 128 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_EQUALSEQUALS; }
 	YY_BREAK
 case 77:
 YY_RULE_SETUP
-#line 129 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_EXCLAMATION; }
 	YY_BREAK
 case 78:
 YY_RULE_SETUP
-#line 130 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_EXCLAMATIONEQUALS; }
 	YY_BREAK
 case 79:
 YY_RULE_SETUP
-#line 131 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_GREATER; }
 	YY_BREAK
 case 80:
 YY_RULE_SETUP
-#line 132 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_GTEQUALS; }
 	YY_BREAK
 case 81:
 YY_RULE_SETUP
-#line 133 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_GTGT; }
 	YY_BREAK
 case 82:
 YY_RULE_SETUP
-#line 134 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_GTGTEQUALS; }
 	YY_BREAK
 case 83:
 YY_RULE_SETUP
-#line 135 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_GTGTGT; }
 	YY_BREAK
 case 84:
 YY_RULE_SETUP
-#line 136 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_GTGTGTEQUALS; }
 	YY_BREAK
 case 85:
 YY_RULE_SETUP
-#line 137 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_LESLESEQUALS; }
 	YY_BREAK
 case 86:
 YY_RULE_SETUP
-#line 138 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_LESSTHAN; }
 	YY_BREAK
 case 87:
 YY_RULE_SETUP
-#line 139 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_LTEQUALS; }
 	YY_BREAK
 case 88:
 YY_RULE_SETUP
-#line 140 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_LTLT; }
 	YY_BREAK
 case 89:
 YY_RULE_SETUP
-#line 141 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_MINUS; }
 	YY_BREAK
 case 90:
 YY_RULE_SETUP
-#line 142 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_MINUSEQUALS; }
 	YY_BREAK
 case 91:
 YY_RULE_SETUP
-#line 143 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_MINUSMINUS; }
 	YY_BREAK
 case 92:
 YY_RULE_SETUP
-#line 144 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_PAREEND; }
 	YY_BREAK
 case 93:
 YY_RULE_SETUP
-#line 145 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_PARESTART; }
 	YY_BREAK
 case 94:
 YY_RULE_SETUP
-#line 146 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_PERCENT; }
 	YY_BREAK
 case 95:
 YY_RULE_SETUP
-#line 147 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_PERCENTEQUALS; }
 	YY_BREAK
 case 96:
 YY_RULE_SETUP
-#line 148 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_PIPE; }
 	YY_BREAK
 case 97:
 YY_RULE_SETUP
-#line 149 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_PIPEEQUALS; }
 	YY_BREAK
 case 98:
 YY_RULE_SETUP
-#line 150 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_PIPEPIPE; }
 	YY_BREAK
 case 99:
 YY_RULE_SETUP
-#line 151 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_PLUS; }
 	YY_BREAK
 case 100:
 YY_RULE_SETUP
-#line 152 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_PLUSEQUALS; }
 	YY_BREAK
 case 101:
 YY_RULE_SETUP
-#line 153 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_PLUSPLUS; }
 	YY_BREAK
 case 102:
 YY_RULE_SETUP
-#line 154 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_QUESTION; }
 	YY_BREAK
 case 103:
 YY_RULE_SETUP
-#line 155 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_SEMICOL; }
 	YY_BREAK
 case 104:
 YY_RULE_SETUP
-#line 156 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_TILDE; }
 	YY_BREAK
 case 105:
 YY_RULE_SETUP
-#line 157 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_TIMES; }
 	YY_BREAK
 case 106:
 YY_RULE_SETUP
-#line 158 "cmDependsJavaLexer.in.l"
 { SYMBOL; return jp_TIMESEQUALS; }
 	YY_BREAK
 case 107:
 YY_RULE_SETUP
-#line 160 "cmDependsJavaLexer.in.l"
 {
   yyextra->AllocateParserType(yylvalp, yytext, strlen(yytext));
   return jp_NAME;
@@ -1540,18 +1622,15 @@ YY_RULE_SETUP
 case 108:
 /* rule 108 can match eol */
 YY_RULE_SETUP
-#line 165 "cmDependsJavaLexer.in.l"
 { }
 	YY_BREAK
 case 109:
 /* rule 109 can match eol */
 YY_RULE_SETUP
-#line 166 "cmDependsJavaLexer.in.l"
 { }
 	YY_BREAK
 case 110:
 YY_RULE_SETUP
-#line 167 "cmDependsJavaLexer.in.l"
 {
   std::cerr << "Unknown character: " << yytext[0]
     << " (" << (int)yytext[0] << ")" << std::endl;
@@ -1561,10 +1640,8 @@ YY_RULE_SETUP
 	YY_BREAK
 case 111:
 YY_RULE_SETUP
-#line 174 "cmDependsJavaLexer.in.l"
 ECHO;
 	YY_BREAK
-#line 1567 "cmDependsJavaLexer.cxx"
 case YY_STATE_EOF(INITIAL):
 case YY_STATE_EOF(comment):
 case YY_STATE_EOF(string):
@@ -1584,7 +1661,7 @@ case YY_STATE_EOF(string):
 			/* We're scanning a new file or input source.  It's
 			 * possible that this happened because the user
 			 * just pointed yyin at a new source and called
-			 * cmDependsJava_yylex().  If so, then we have to assure
+			 * yylex().  If so, then we have to assure
 			 * consistency between YY_CURRENT_BUFFER and our
 			 * globals.  Here is the right place to do so, because
 			 * this is the first action (other than possibly a
@@ -1644,7 +1721,7 @@ case YY_STATE_EOF(string):
 				{
 				yyg->yy_did_buffer_switch_on_eof = 0;
 
-				if ( cmDependsJava_yywrap(yyscanner ) )
+				if ( yywrap( yyscanner ) )
 					{
 					/* Note: because we've taken care in
 					 * yy_get_next_buffer() to have set up
@@ -1698,7 +1775,7 @@ case YY_STATE_EOF(string):
 	} /* end of action switch */
 		} /* end of scanning one token */
 	} /* end of user's declarations */
-} /* end of cmDependsJava_yylex */
+} /* end of yylex */
 
 /* yy_get_next_buffer - try to read in a new buffer
  *
@@ -1712,7 +1789,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
 	char *source = yyg->yytext_ptr;
-	yy_size_t number_to_move, i;
+	int number_to_move, i;
 	int ret_val;
 
 	if ( yyg->yy_c_buf_p > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] )
@@ -1741,7 +1818,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 	/* Try to read more data. */
 
 	/* First move last chars to start of buffer. */
-	number_to_move = (yy_size_t) (yyg->yy_c_buf_p - yyg->yytext_ptr) - 1;
+	number_to_move = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr - 1);
 
 	for ( i = 0; i < number_to_move; ++i )
 		*(dest++) = *(source++);
@@ -1777,7 +1854,8 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 
 				b->yy_ch_buf = (char *)
 					/* Include room in for 2 EOB chars. */
-					cmDependsJava_yyrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2 ,yyscanner );
+					yyrealloc( (void *) b->yy_ch_buf,
+							 (yy_size_t) (b->yy_buf_size + 2) , yyscanner );
 				}
 			else
 				/* Can't grow it, we don't own it. */
@@ -1809,7 +1887,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		if ( number_to_move == YY_MORE_ADJ )
 			{
 			ret_val = EOB_ACT_END_OF_FILE;
-			cmDependsJava_yyrestart(yyin  ,yyscanner);
+			yyrestart( yyin  , yyscanner);
 			}
 
 		else
@@ -1823,12 +1901,15 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 	else
 		ret_val = EOB_ACT_CONTINUE_SCAN;
 
-	if ((int) (yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
+	if ((yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
 		/* Extend the array by 50%, plus the number we really need. */
 		int new_size = yyg->yy_n_chars + number_to_move + (yyg->yy_n_chars >> 1);
-		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) cmDependsJava_yyrealloc((void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf,new_size ,yyscanner );
+		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc(
+			(void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size , yyscanner );
 		if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
 			YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
+		/* "- 2" to take care of EOB's */
+		YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2);
 	}
 
 	yyg->yy_n_chars += number_to_move;
@@ -1862,9 +1943,9 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 			{
 			yy_current_state = (int) yy_def[yy_current_state];
 			if ( yy_current_state >= 327 )
-				yy_c = yy_meta[(unsigned int) yy_c];
+				yy_c = yy_meta[yy_c];
 			}
-		yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
+		yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 		}
 
 	return yy_current_state;
@@ -1891,9 +1972,9 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		{
 		yy_current_state = (int) yy_def[yy_current_state];
 		if ( yy_current_state >= 327 )
-			yy_c = yy_meta[(unsigned int) yy_c];
+			yy_c = yy_meta[yy_c];
 		}
-	yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
+	yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 	yy_is_jam = (yy_current_state == 326);
 
 	(void)yyg;
@@ -1967,7 +2048,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 
 		else
 			{ /* need more input */
-			int offset = yyg->yy_c_buf_p - yyg->yytext_ptr;
+			int offset = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr);
 			++yyg->yy_c_buf_p;
 
 			switch ( yy_get_next_buffer( yyscanner ) )
@@ -1984,13 +2065,13 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 					 */
 
 					/* Reset buffer status. */
-					cmDependsJava_yyrestart(yyin ,yyscanner);
+					yyrestart( yyin , yyscanner);
 
 					/*FALLTHROUGH*/
 
 				case EOB_ACT_END_OF_FILE:
 					{
-					if ( cmDependsJava_yywrap(yyscanner ) )
+					if ( yywrap( yyscanner ) )
 						return 0;
 
 					if ( ! yyg->yy_did_buffer_switch_on_eof )
@@ -2022,34 +2103,34 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @note This function does not reset the start condition to @c INITIAL .
  */
-    void cmDependsJava_yyrestart  (FILE * input_file , yyscan_t yyscanner)
+    void yyrestart  (FILE * input_file , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	if ( ! YY_CURRENT_BUFFER ){
-        cmDependsJava_yyensure_buffer_stack (yyscanner);
+        yyensure_buffer_stack (yyscanner);
 		YY_CURRENT_BUFFER_LVALUE =
-            cmDependsJava_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner);
 	}
 
-	cmDependsJava_yy_init_buffer(YY_CURRENT_BUFFER,input_file ,yyscanner);
-	cmDependsJava_yy_load_buffer_state(yyscanner );
+	yy_init_buffer( YY_CURRENT_BUFFER, input_file , yyscanner);
+	yy_load_buffer_state( yyscanner );
 }
 
 /** Switch to a different input buffer.
  * @param new_buffer The new input buffer.
  * @param yyscanner The scanner object.
  */
-    void cmDependsJava_yy_switch_to_buffer  (YY_BUFFER_STATE  new_buffer , yyscan_t yyscanner)
+    void yy_switch_to_buffer  (YY_BUFFER_STATE  new_buffer , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	/* TODO. We should be able to replace this entire function body
 	 * with
-	 *		cmDependsJava_yypop_buffer_state();
-	 *		cmDependsJava_yypush_buffer_state(new_buffer);
+	 *		yypop_buffer_state();
+	 *		yypush_buffer_state(new_buffer);
      */
-	cmDependsJava_yyensure_buffer_stack (yyscanner);
+	yyensure_buffer_stack (yyscanner);
 	if ( YY_CURRENT_BUFFER == new_buffer )
 		return;
 
@@ -2062,17 +2143,17 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		}
 
 	YY_CURRENT_BUFFER_LVALUE = new_buffer;
-	cmDependsJava_yy_load_buffer_state(yyscanner );
+	yy_load_buffer_state( yyscanner );
 
 	/* We don't actually know whether we did this switch during
-	 * EOF (cmDependsJava_yywrap()) processing, but the only time this flag
-	 * is looked at is after cmDependsJava_yywrap() is called, so it's safe
+	 * EOF (yywrap()) processing, but the only time this flag
+	 * is looked at is after yywrap() is called, so it's safe
 	 * to go ahead and always set it.
 	 */
 	yyg->yy_did_buffer_switch_on_eof = 1;
 }
 
-static void cmDependsJava_yy_load_buffer_state  (yyscan_t yyscanner)
+static void yy_load_buffer_state  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
@@ -2087,35 +2168,35 @@ static void cmDependsJava_yy_load_buffer_state  (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @return the allocated buffer state.
  */
-    YY_BUFFER_STATE cmDependsJava_yy_create_buffer  (FILE * file, int  size , yyscan_t yyscanner)
+    YY_BUFFER_STATE yy_create_buffer  (FILE * file, int  size , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 
-	b = (YY_BUFFER_STATE) cmDependsJava_yyalloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+	b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) , yyscanner );
 	if ( ! b )
-		YY_FATAL_ERROR( "out of dynamic memory in cmDependsJava_yy_create_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 
-	b->yy_buf_size = (yy_size_t)size;
+	b->yy_buf_size = size;
 
 	/* yy_ch_buf has to be 2 characters longer than the size given because
 	 * we need to put in 2 end-of-buffer characters.
 	 */
-	b->yy_ch_buf = (char *) cmDependsJava_yyalloc(b->yy_buf_size + 2 ,yyscanner );
+	b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2) , yyscanner );
 	if ( ! b->yy_ch_buf )
-		YY_FATAL_ERROR( "out of dynamic memory in cmDependsJava_yy_create_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 
 	b->yy_is_our_buffer = 1;
 
-	cmDependsJava_yy_init_buffer(b,file ,yyscanner);
+	yy_init_buffer( b, file , yyscanner);
 
 	return b;
 }
 
 /** Destroy the buffer.
- * @param b a buffer created with cmDependsJava_yy_create_buffer()
+ * @param b a buffer created with yy_create_buffer()
  * @param yyscanner The scanner object.
  */
-    void cmDependsJava_yy_delete_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+    void yy_delete_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -2126,28 +2207,28 @@ static void cmDependsJava_yy_load_buffer_state  (yyscan_t yyscanner)
 		YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
 
 	if ( b->yy_is_our_buffer )
-		cmDependsJava_yyfree((void *) b->yy_ch_buf ,yyscanner );
+		yyfree( (void *) b->yy_ch_buf , yyscanner );
 
-	cmDependsJava_yyfree((void *) b ,yyscanner );
+	yyfree( (void *) b , yyscanner );
 }
 
 /* Initializes or reinitializes a buffer.
  * This function is sometimes called more than once on the same buffer,
- * such as during a cmDependsJava_yyrestart() or at EOF.
+ * such as during a yyrestart() or at EOF.
  */
-    static void cmDependsJava_yy_init_buffer  (YY_BUFFER_STATE  b, FILE * file , yyscan_t yyscanner)
+    static void yy_init_buffer  (YY_BUFFER_STATE  b, FILE * file , yyscan_t yyscanner)
 
 {
 	int oerrno = errno;
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
-	cmDependsJava_yy_flush_buffer(b ,yyscanner);
+	yy_flush_buffer( b , yyscanner);
 
 	b->yy_input_file = file;
 	b->yy_fill_buffer = 1;
 
-    /* If b is the current buffer, then cmDependsJava_yy_init_buffer was _probably_
-     * called from cmDependsJava_yyrestart() or through yy_get_next_buffer.
+    /* If b is the current buffer, then yy_init_buffer was _probably_
+     * called from yyrestart() or through yy_get_next_buffer.
      * In that case, we don't want to reset the lineno or column.
      */
     if (b != YY_CURRENT_BUFFER){
@@ -2164,7 +2245,7 @@ static void cmDependsJava_yy_load_buffer_state  (yyscan_t yyscanner)
  * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
  * @param yyscanner The scanner object.
  */
-    void cmDependsJava_yy_flush_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+    void yy_flush_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if ( ! b )
@@ -2185,7 +2266,7 @@ static void cmDependsJava_yy_load_buffer_state  (yyscan_t yyscanner)
 	b->yy_buffer_status = YY_BUFFER_NEW;
 
 	if ( b == YY_CURRENT_BUFFER )
-		cmDependsJava_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 }
 
 /** Pushes the new state onto the stack. The new state becomes
@@ -2194,15 +2275,15 @@ static void cmDependsJava_yy_load_buffer_state  (yyscan_t yyscanner)
  *  @param new_buffer The new state.
  *  @param yyscanner The scanner object.
  */
-void cmDependsJava_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner)
+void yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if (new_buffer == NULL)
 		return;
 
-	cmDependsJava_yyensure_buffer_stack(yyscanner);
+	yyensure_buffer_stack(yyscanner);
 
-	/* This block is copied from cmDependsJava_yy_switch_to_buffer. */
+	/* This block is copied from yy_switch_to_buffer. */
 	if ( YY_CURRENT_BUFFER )
 		{
 		/* Flush out information for old buffer. */
@@ -2216,8 +2297,8 @@ void cmDependsJava_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yy
 		yyg->yy_buffer_stack_top++;
 	YY_CURRENT_BUFFER_LVALUE = new_buffer;
 
-	/* copied from cmDependsJava_yy_switch_to_buffer. */
-	cmDependsJava_yy_load_buffer_state(yyscanner );
+	/* copied from yy_switch_to_buffer. */
+	yy_load_buffer_state( yyscanner );
 	yyg->yy_did_buffer_switch_on_eof = 1;
 }
 
@@ -2225,19 +2306,19 @@ void cmDependsJava_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yy
  *  The next element becomes the new top.
  *  @param yyscanner The scanner object.
  */
-void cmDependsJava_yypop_buffer_state (yyscan_t yyscanner)
+void yypop_buffer_state (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if (!YY_CURRENT_BUFFER)
 		return;
 
-	cmDependsJava_yy_delete_buffer(YY_CURRENT_BUFFER ,yyscanner);
+	yy_delete_buffer(YY_CURRENT_BUFFER , yyscanner);
 	YY_CURRENT_BUFFER_LVALUE = NULL;
 	if (yyg->yy_buffer_stack_top > 0)
 		--yyg->yy_buffer_stack_top;
 
 	if (YY_CURRENT_BUFFER) {
-		cmDependsJava_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 		yyg->yy_did_buffer_switch_on_eof = 1;
 	}
 }
@@ -2245,9 +2326,9 @@ void cmDependsJava_yypop_buffer_state (yyscan_t yyscanner)
 /* Allocates the stack if it does not exist.
  *  Guarantees space for at least one push.
  */
-static void cmDependsJava_yyensure_buffer_stack (yyscan_t yyscanner)
+static void yyensure_buffer_stack (yyscan_t yyscanner)
 {
-	int num_to_alloc;
+	yy_size_t num_to_alloc;
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	if (!yyg->yy_buffer_stack) {
@@ -2257,11 +2338,11 @@ static void cmDependsJava_yyensure_buffer_stack (yyscan_t yyscanner)
 		 * immediate realloc on the next call.
          */
       num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */
-		yyg->yy_buffer_stack = (struct yy_buffer_state**)cmDependsJava_yyalloc
+		yyg->yy_buffer_stack = (struct yy_buffer_state**)yyalloc
 								(num_to_alloc * sizeof(struct yy_buffer_state*)
 								, yyscanner);
 		if ( ! yyg->yy_buffer_stack )
-			YY_FATAL_ERROR( "out of dynamic memory in cmDependsJava_yyensure_buffer_stack()" );
+			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
 
 		memset(yyg->yy_buffer_stack, 0, num_to_alloc * sizeof(struct yy_buffer_state*));
 
@@ -2276,12 +2357,12 @@ static void cmDependsJava_yyensure_buffer_stack (yyscan_t yyscanner)
 		yy_size_t grow_size = 8 /* arbitrary grow size */;
 
 		num_to_alloc = yyg->yy_buffer_stack_max + grow_size;
-		yyg->yy_buffer_stack = (struct yy_buffer_state**)cmDependsJava_yyrealloc
+		yyg->yy_buffer_stack = (struct yy_buffer_state**)yyrealloc
 								(yyg->yy_buffer_stack,
 								num_to_alloc * sizeof(struct yy_buffer_state*)
 								, yyscanner);
 		if ( ! yyg->yy_buffer_stack )
-			YY_FATAL_ERROR( "out of dynamic memory in cmDependsJava_yyensure_buffer_stack()" );
+			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
 
 		/* zero only the new slots.*/
 		memset(yyg->yy_buffer_stack + yyg->yy_buffer_stack_max, 0, grow_size * sizeof(struct yy_buffer_state*));
@@ -2295,7 +2376,7 @@ static void cmDependsJava_yyensure_buffer_stack (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  */
-YY_BUFFER_STATE cmDependsJava_yy_scan_buffer  (char * base, yy_size_t  size , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_buffer  (char * base, yy_size_t  size , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 
@@ -2305,11 +2386,11 @@ YY_BUFFER_STATE cmDependsJava_yy_scan_buffer  (char * base, yy_size_t  size , yy
 		/* They forgot to leave room for the EOB's. */
 		return NULL;
 
-	b = (YY_BUFFER_STATE) cmDependsJava_yyalloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+	b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) , yyscanner );
 	if ( ! b )
-		YY_FATAL_ERROR( "out of dynamic memory in cmDependsJava_yy_scan_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
 
-	b->yy_buf_size = size - 2;	/* "- 2" to take care of EOB's */
+	b->yy_buf_size = (int) (size - 2);	/* "- 2" to take care of EOB's */
 	b->yy_buf_pos = b->yy_ch_buf = base;
 	b->yy_is_our_buffer = 0;
 	b->yy_input_file = NULL;
@@ -2319,53 +2400,53 @@ YY_BUFFER_STATE cmDependsJava_yy_scan_buffer  (char * base, yy_size_t  size , yy
 	b->yy_fill_buffer = 0;
 	b->yy_buffer_status = YY_BUFFER_NEW;
 
-	cmDependsJava_yy_switch_to_buffer(b ,yyscanner );
+	yy_switch_to_buffer( b , yyscanner );
 
 	return b;
 }
 
-/** Setup the input buffer state to scan a string. The next call to cmDependsJava_yylex() will
+/** Setup the input buffer state to scan a string. The next call to yylex() will
  * scan from a @e copy of @a str.
  * @param yystr a NUL-terminated string to scan
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  * @note If you want to scan bytes that may contain NUL values, then use
- *       cmDependsJava_yy_scan_bytes() instead.
+ *       yy_scan_bytes() instead.
  */
-YY_BUFFER_STATE cmDependsJava_yy_scan_string (yyconst char * yystr , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_string (const char * yystr , yyscan_t yyscanner)
 {
 
-	return cmDependsJava_yy_scan_bytes(yystr,(int) strlen(yystr) ,yyscanner);
+	return yy_scan_bytes( yystr, (int) strlen(yystr) , yyscanner);
 }
 
-/** Setup the input buffer state to scan the given bytes. The next call to cmDependsJava_yylex() will
+/** Setup the input buffer state to scan the given bytes. The next call to yylex() will
  * scan from a @e copy of @a bytes.
  * @param yybytes the byte buffer to scan
  * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes.
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  */
-YY_BUFFER_STATE cmDependsJava_yy_scan_bytes  (yyconst char * yybytes, int  _yybytes_len , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_bytes  (const char * yybytes, int  _yybytes_len , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 	char *buf;
 	yy_size_t n;
-	yy_size_t i;
+	int i;
 
 	/* Get memory for full buffer, including space for trailing EOB's. */
-	n = (yy_size_t) _yybytes_len + 2;
-	buf = (char *) cmDependsJava_yyalloc(n ,yyscanner );
+	n = (yy_size_t) (_yybytes_len + 2);
+	buf = (char *) yyalloc( n , yyscanner );
 	if ( ! buf )
-		YY_FATAL_ERROR( "out of dynamic memory in cmDependsJava_yy_scan_bytes()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
 
-	for ( i = 0; i < (size_t)_yybytes_len; ++i )
+	for ( i = 0; i < _yybytes_len; ++i )
 		buf[i] = yybytes[i];
 
 	buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR;
 
-	b = cmDependsJava_yy_scan_buffer(buf,n ,yyscanner);
+	b = yy_scan_buffer( buf, n , yyscanner);
 	if ( ! b )
-		YY_FATAL_ERROR( "bad buffer in cmDependsJava_yy_scan_bytes()" );
+		YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
 
 	/* It's okay to grow etc. this buffer, and we should throw it
 	 * away when we're done.
@@ -2379,11 +2460,11 @@ YY_BUFFER_STATE cmDependsJava_yy_scan_bytes  (yyconst char * yybytes, int  _yyby
 #define YY_EXIT_FAILURE 2
 #endif
 
-static void yynoreturn yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
+static void yynoreturn yy_fatal_error (const char* msg , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
-	(void) fprintf( stderr, "%s\n", msg );
+	fprintf( stderr, "%s\n", msg );
 	exit( YY_EXIT_FAILURE );
 }
 
@@ -2409,7 +2490,7 @@ static void yynoreturn yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
 /** Get the user-defined data for this scanner.
  * @param yyscanner The scanner object.
  */
-YY_EXTRA_TYPE cmDependsJava_yyget_extra  (yyscan_t yyscanner)
+YY_EXTRA_TYPE yyget_extra  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyextra;
@@ -2418,7 +2499,7 @@ YY_EXTRA_TYPE cmDependsJava_yyget_extra  (yyscan_t yyscanner)
 /** Get the current line number.
  * @param yyscanner The scanner object.
  */
-int cmDependsJava_yyget_lineno  (yyscan_t yyscanner)
+int yyget_lineno  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -2431,7 +2512,7 @@ int cmDependsJava_yyget_lineno  (yyscan_t yyscanner)
 /** Get the current column number.
  * @param yyscanner The scanner object.
  */
-int cmDependsJava_yyget_column  (yyscan_t yyscanner)
+int yyget_column  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -2444,7 +2525,7 @@ int cmDependsJava_yyget_column  (yyscan_t yyscanner)
 /** Get the input stream.
  * @param yyscanner The scanner object.
  */
-FILE *cmDependsJava_yyget_in  (yyscan_t yyscanner)
+FILE *yyget_in  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyin;
@@ -2453,7 +2534,7 @@ FILE *cmDependsJava_yyget_in  (yyscan_t yyscanner)
 /** Get the output stream.
  * @param yyscanner The scanner object.
  */
-FILE *cmDependsJava_yyget_out  (yyscan_t yyscanner)
+FILE *yyget_out  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyout;
@@ -2462,7 +2543,7 @@ FILE *cmDependsJava_yyget_out  (yyscan_t yyscanner)
 /** Get the length of the current token.
  * @param yyscanner The scanner object.
  */
-int cmDependsJava_yyget_leng  (yyscan_t yyscanner)
+int yyget_leng  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyleng;
@@ -2472,7 +2553,7 @@ int cmDependsJava_yyget_leng  (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  */
 
-char *cmDependsJava_yyget_text  (yyscan_t yyscanner)
+char *yyget_text  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yytext;
@@ -2482,7 +2563,7 @@ char *cmDependsJava_yyget_text  (yyscan_t yyscanner)
  * @param user_defined The data to be associated with this scanner.
  * @param yyscanner The scanner object.
  */
-void cmDependsJava_yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
+void yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyextra = user_defined ;
@@ -2492,13 +2573,13 @@ void cmDependsJava_yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner
  * @param _line_number line number
  * @param yyscanner The scanner object.
  */
-void cmDependsJava_yyset_lineno (int  _line_number , yyscan_t yyscanner)
+void yyset_lineno (int  _line_number , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
         /* lineno is only valid if an input buffer exists. */
         if (! YY_CURRENT_BUFFER )
-           YY_FATAL_ERROR( "cmDependsJava_yyset_lineno called with no buffer" );
+           YY_FATAL_ERROR( "yyset_lineno called with no buffer" );
 
     yylineno = _line_number;
 }
@@ -2507,13 +2588,13 @@ void cmDependsJava_yyset_lineno (int  _line_number , yyscan_t yyscanner)
  * @param _column_no column number
  * @param yyscanner The scanner object.
  */
-void cmDependsJava_yyset_column (int  _column_no , yyscan_t yyscanner)
+void yyset_column (int  _column_no , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
         /* column is only valid if an input buffer exists. */
         if (! YY_CURRENT_BUFFER )
-           YY_FATAL_ERROR( "cmDependsJava_yyset_column called with no buffer" );
+           YY_FATAL_ERROR( "yyset_column called with no buffer" );
 
     yycolumn = _column_no;
 }
@@ -2522,27 +2603,27 @@ void cmDependsJava_yyset_column (int  _column_no , yyscan_t yyscanner)
  * input buffer.
  * @param _in_str A readable stream.
  * @param yyscanner The scanner object.
- * @see cmDependsJava_yy_switch_to_buffer
+ * @see yy_switch_to_buffer
  */
-void cmDependsJava_yyset_in (FILE *  _in_str , yyscan_t yyscanner)
+void yyset_in (FILE *  _in_str , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyin = _in_str ;
 }
 
-void cmDependsJava_yyset_out (FILE *  _out_str , yyscan_t yyscanner)
+void yyset_out (FILE *  _out_str , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyout = _out_str ;
 }
 
-int cmDependsJava_yyget_debug  (yyscan_t yyscanner)
+int yyget_debug  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yy_flex_debug;
 }
 
-void cmDependsJava_yyset_debug (int  _bdebug , yyscan_t yyscanner)
+void yyset_debug (int  _bdebug , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yy_flex_debug = _bdebug ;
@@ -2552,20 +2633,18 @@ void cmDependsJava_yyset_debug (int  _bdebug , yyscan_t yyscanner)
 
 /* User-visible API */
 
-/* cmDependsJava_yylex_init is special because it creates the scanner itself, so it is
+/* yylex_init is special because it creates the scanner itself, so it is
  * the ONLY reentrant function that doesn't take the scanner as the last argument.
  * That's why we explicitly handle the declaration, instead of using our macros.
  */
-
-int cmDependsJava_yylex_init(yyscan_t* ptr_yy_globals)
-
+int yylex_init(yyscan_t* ptr_yy_globals)
 {
     if (ptr_yy_globals == NULL){
         errno = EINVAL;
         return 1;
     }
 
-    *ptr_yy_globals = (yyscan_t) cmDependsJava_yyalloc ( sizeof( struct yyguts_t ), NULL );
+    *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), NULL );
 
     if (*ptr_yy_globals == NULL){
         errno = ENOMEM;
@@ -2578,27 +2657,25 @@ int cmDependsJava_yylex_init(yyscan_t* ptr_yy_globals)
     return yy_init_globals ( *ptr_yy_globals );
 }
 
-/* cmDependsJava_yylex_init_extra has the same functionality as cmDependsJava_yylex_init, but follows the
+/* yylex_init_extra has the same functionality as yylex_init, but follows the
  * convention of taking the scanner as the last argument. Note however, that
  * this is a *pointer* to a scanner, as it will be allocated by this call (and
  * is the reason, too, why this function also must handle its own declaration).
- * The user defined value in the first argument will be available to cmDependsJava_yyalloc in
+ * The user defined value in the first argument will be available to yyalloc in
  * the yyextra field.
  */
-
-int cmDependsJava_yylex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_yy_globals )
-
+int yylex_init_extra( YY_EXTRA_TYPE yy_user_defined, yyscan_t* ptr_yy_globals )
 {
     struct yyguts_t dummy_yyguts;
 
-    cmDependsJava_yyset_extra (yy_user_defined, &dummy_yyguts);
+    yyset_extra (yy_user_defined, &dummy_yyguts);
 
     if (ptr_yy_globals == NULL){
         errno = EINVAL;
         return 1;
     }
 
-    *ptr_yy_globals = (yyscan_t) cmDependsJava_yyalloc ( sizeof( struct yyguts_t ), &dummy_yyguts );
+    *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), &dummy_yyguts );
 
     if (*ptr_yy_globals == NULL){
         errno = ENOMEM;
@@ -2609,7 +2686,7 @@ int cmDependsJava_yylex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_y
     yy_init_globals. Leave at 0x00 for releases. */
     memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t));
 
-    cmDependsJava_yyset_extra (yy_user_defined, *ptr_yy_globals);
+    yyset_extra (yy_user_defined, *ptr_yy_globals);
 
     return yy_init_globals ( *ptr_yy_globals );
 }
@@ -2618,7 +2695,7 @@ static int yy_init_globals (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     /* Initialization is the same as for the non-reentrant scanner.
-     * This function is called from cmDependsJava_yylex_destroy(), so don't allocate here.
+     * This function is called from yylex_destroy(), so don't allocate here.
      */
 
     yyg->yy_buffer_stack = NULL;
@@ -2642,37 +2719,37 @@ static int yy_init_globals (yyscan_t yyscanner)
 #endif
 
     /* For future reference: Set errno on error, since we are called by
-     * cmDependsJava_yylex_init()
+     * yylex_init()
      */
     return 0;
 }
 
-/* cmDependsJava_yylex_destroy is for both reentrant and non-reentrant scanners. */
-int cmDependsJava_yylex_destroy  (yyscan_t yyscanner)
+/* yylex_destroy is for both reentrant and non-reentrant scanners. */
+int yylex_destroy  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
     /* Pop the buffer stack, destroying each element. */
 	while(YY_CURRENT_BUFFER){
-		cmDependsJava_yy_delete_buffer(YY_CURRENT_BUFFER ,yyscanner );
+		yy_delete_buffer( YY_CURRENT_BUFFER , yyscanner );
 		YY_CURRENT_BUFFER_LVALUE = NULL;
-		cmDependsJava_yypop_buffer_state(yyscanner);
+		yypop_buffer_state(yyscanner);
 	}
 
 	/* Destroy the stack itself. */
-	cmDependsJava_yyfree(yyg->yy_buffer_stack ,yyscanner);
+	yyfree(yyg->yy_buffer_stack , yyscanner);
 	yyg->yy_buffer_stack = NULL;
 
     /* Destroy the start condition stack. */
-        cmDependsJava_yyfree(yyg->yy_start_stack ,yyscanner );
+        yyfree( yyg->yy_start_stack , yyscanner );
         yyg->yy_start_stack = NULL;
 
     /* Reset the globals. This is important in a non-reentrant scanner so the next time
-     * cmDependsJava_yylex() is called, initialization will occur. */
+     * yylex() is called, initialization will occur. */
     yy_init_globals( yyscanner);
 
     /* Destroy the main struct (reentrant only). */
-    cmDependsJava_yyfree ( yyscanner , yyscanner );
+    yyfree ( yyscanner , yyscanner );
     yyscanner = NULL;
     return 0;
 }
@@ -2682,7 +2759,7 @@ int cmDependsJava_yylex_destroy  (yyscan_t yyscanner)
  */
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char* s1, yyconst char * s2, int n , yyscan_t yyscanner)
+static void yy_flex_strncpy (char* s1, const char * s2, int n , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
@@ -2694,7 +2771,7 @@ static void yy_flex_strncpy (char* s1, yyconst char * s2, int n , yyscan_t yysca
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * s , yyscan_t yyscanner)
+static int yy_flex_strlen (const char * s , yyscan_t yyscanner)
 {
 	int n;
 	for ( n = 0; s[n]; ++n )
@@ -2704,14 +2781,14 @@ static int yy_flex_strlen (yyconst char * s , yyscan_t yyscanner)
 }
 #endif
 
-void *cmDependsJava_yyalloc (yy_size_t  size , yyscan_t yyscanner)
+void *yyalloc (yy_size_t  size , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
 	return malloc(size);
 }
 
-void *cmDependsJava_yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
+void *yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
@@ -2726,13 +2803,11 @@ void *cmDependsJava_yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner
 	return realloc(ptr, size);
 }
 
-void cmDependsJava_yyfree (void * ptr , yyscan_t yyscanner)
+void yyfree (void * ptr , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
-	free( (char *) ptr );	/* see cmDependsJava_yyrealloc() for (char *) cast */
+	free( (char *) ptr );	/* see yyrealloc() for (char *) cast */
 }
 
 #define YYTABLES_NAME "yytables"
-
-#line 174 "cmDependsJavaLexer.in.l"
diff --git a/Source/LexerParser/cmDependsJavaLexer.h b/Source/LexerParser/cmDependsJavaLexer.h
index ccadd70b9..f1e87d246 100644
--- a/Source/LexerParser/cmDependsJavaLexer.h
+++ b/Source/LexerParser/cmDependsJavaLexer.h
@@ -2,10 +2,6 @@
 #define cmDependsJava_yyHEADER_H 1
 #define cmDependsJava_yyIN_HEADER 1
 
-#line 6 "cmDependsJavaLexer.h"
-
-#line 8 "cmDependsJavaLexer.h"
-
 #define FLEXINT_H 1
 #define  YY_INT_ALIGNED short int
 
@@ -14,11 +10,221 @@
 #define FLEX_SCANNER
 #define YY_FLEX_MAJOR_VERSION 2
 #define YY_FLEX_MINOR_VERSION 6
-#define YY_FLEX_SUBMINOR_VERSION 1
+#define YY_FLEX_SUBMINOR_VERSION 4
 #if YY_FLEX_SUBMINOR_VERSION > 0
 #define FLEX_BETA
 #endif
 
+#ifdef yy_create_buffer
+#define cmDependsJava_yy_create_buffer_ALREADY_DEFINED
+#else
+#define yy_create_buffer cmDependsJava_yy_create_buffer
+#endif
+
+#ifdef yy_delete_buffer
+#define cmDependsJava_yy_delete_buffer_ALREADY_DEFINED
+#else
+#define yy_delete_buffer cmDependsJava_yy_delete_buffer
+#endif
+
+#ifdef yy_scan_buffer
+#define cmDependsJava_yy_scan_buffer_ALREADY_DEFINED
+#else
+#define yy_scan_buffer cmDependsJava_yy_scan_buffer
+#endif
+
+#ifdef yy_scan_string
+#define cmDependsJava_yy_scan_string_ALREADY_DEFINED
+#else
+#define yy_scan_string cmDependsJava_yy_scan_string
+#endif
+
+#ifdef yy_scan_bytes
+#define cmDependsJava_yy_scan_bytes_ALREADY_DEFINED
+#else
+#define yy_scan_bytes cmDependsJava_yy_scan_bytes
+#endif
+
+#ifdef yy_init_buffer
+#define cmDependsJava_yy_init_buffer_ALREADY_DEFINED
+#else
+#define yy_init_buffer cmDependsJava_yy_init_buffer
+#endif
+
+#ifdef yy_flush_buffer
+#define cmDependsJava_yy_flush_buffer_ALREADY_DEFINED
+#else
+#define yy_flush_buffer cmDependsJava_yy_flush_buffer
+#endif
+
+#ifdef yy_load_buffer_state
+#define cmDependsJava_yy_load_buffer_state_ALREADY_DEFINED
+#else
+#define yy_load_buffer_state cmDependsJava_yy_load_buffer_state
+#endif
+
+#ifdef yy_switch_to_buffer
+#define cmDependsJava_yy_switch_to_buffer_ALREADY_DEFINED
+#else
+#define yy_switch_to_buffer cmDependsJava_yy_switch_to_buffer
+#endif
+
+#ifdef yypush_buffer_state
+#define cmDependsJava_yypush_buffer_state_ALREADY_DEFINED
+#else
+#define yypush_buffer_state cmDependsJava_yypush_buffer_state
+#endif
+
+#ifdef yypop_buffer_state
+#define cmDependsJava_yypop_buffer_state_ALREADY_DEFINED
+#else
+#define yypop_buffer_state cmDependsJava_yypop_buffer_state
+#endif
+
+#ifdef yyensure_buffer_stack
+#define cmDependsJava_yyensure_buffer_stack_ALREADY_DEFINED
+#else
+#define yyensure_buffer_stack cmDependsJava_yyensure_buffer_stack
+#endif
+
+#ifdef yylex
+#define cmDependsJava_yylex_ALREADY_DEFINED
+#else
+#define yylex cmDependsJava_yylex
+#endif
+
+#ifdef yyrestart
+#define cmDependsJava_yyrestart_ALREADY_DEFINED
+#else
+#define yyrestart cmDependsJava_yyrestart
+#endif
+
+#ifdef yylex_init
+#define cmDependsJava_yylex_init_ALREADY_DEFINED
+#else
+#define yylex_init cmDependsJava_yylex_init
+#endif
+
+#ifdef yylex_init_extra
+#define cmDependsJava_yylex_init_extra_ALREADY_DEFINED
+#else
+#define yylex_init_extra cmDependsJava_yylex_init_extra
+#endif
+
+#ifdef yylex_destroy
+#define cmDependsJava_yylex_destroy_ALREADY_DEFINED
+#else
+#define yylex_destroy cmDependsJava_yylex_destroy
+#endif
+
+#ifdef yyget_debug
+#define cmDependsJava_yyget_debug_ALREADY_DEFINED
+#else
+#define yyget_debug cmDependsJava_yyget_debug
+#endif
+
+#ifdef yyset_debug
+#define cmDependsJava_yyset_debug_ALREADY_DEFINED
+#else
+#define yyset_debug cmDependsJava_yyset_debug
+#endif
+
+#ifdef yyget_extra
+#define cmDependsJava_yyget_extra_ALREADY_DEFINED
+#else
+#define yyget_extra cmDependsJava_yyget_extra
+#endif
+
+#ifdef yyset_extra
+#define cmDependsJava_yyset_extra_ALREADY_DEFINED
+#else
+#define yyset_extra cmDependsJava_yyset_extra
+#endif
+
+#ifdef yyget_in
+#define cmDependsJava_yyget_in_ALREADY_DEFINED
+#else
+#define yyget_in cmDependsJava_yyget_in
+#endif
+
+#ifdef yyset_in
+#define cmDependsJava_yyset_in_ALREADY_DEFINED
+#else
+#define yyset_in cmDependsJava_yyset_in
+#endif
+
+#ifdef yyget_out
+#define cmDependsJava_yyget_out_ALREADY_DEFINED
+#else
+#define yyget_out cmDependsJava_yyget_out
+#endif
+
+#ifdef yyset_out
+#define cmDependsJava_yyset_out_ALREADY_DEFINED
+#else
+#define yyset_out cmDependsJava_yyset_out
+#endif
+
+#ifdef yyget_leng
+#define cmDependsJava_yyget_leng_ALREADY_DEFINED
+#else
+#define yyget_leng cmDependsJava_yyget_leng
+#endif
+
+#ifdef yyget_text
+#define cmDependsJava_yyget_text_ALREADY_DEFINED
+#else
+#define yyget_text cmDependsJava_yyget_text
+#endif
+
+#ifdef yyget_lineno
+#define cmDependsJava_yyget_lineno_ALREADY_DEFINED
+#else
+#define yyget_lineno cmDependsJava_yyget_lineno
+#endif
+
+#ifdef yyset_lineno
+#define cmDependsJava_yyset_lineno_ALREADY_DEFINED
+#else
+#define yyset_lineno cmDependsJava_yyset_lineno
+#endif
+
+#ifdef yyget_column
+#define cmDependsJava_yyget_column_ALREADY_DEFINED
+#else
+#define yyget_column cmDependsJava_yyget_column
+#endif
+
+#ifdef yyset_column
+#define cmDependsJava_yyset_column_ALREADY_DEFINED
+#else
+#define yyset_column cmDependsJava_yyset_column
+#endif
+
+#ifdef yywrap
+#define cmDependsJava_yywrap_ALREADY_DEFINED
+#else
+#define yywrap cmDependsJava_yywrap
+#endif
+
+#ifdef yyalloc
+#define cmDependsJava_yyalloc_ALREADY_DEFINED
+#else
+#define yyalloc cmDependsJava_yyalloc
+#endif
+
+#ifdef yyrealloc
+#define cmDependsJava_yyrealloc_ALREADY_DEFINED
+#else
+#define yyrealloc cmDependsJava_yyrealloc
+#endif
+
+#ifdef yyfree
+#define cmDependsJava_yyfree_ALREADY_DEFINED
+#else
+#define yyfree cmDependsJava_yyfree
+#endif
+
 /* First, we deal with  platform-specific or compiler-specific issues. */
 
 /* begin standard C headers. */
@@ -89,10 +295,16 @@ typedef unsigned int flex_uint32_t;
 #define UINT32_MAX             (4294967295U)
 #endif
 
+#ifndef SIZE_MAX
+#define SIZE_MAX               (~(size_t)0)
+#endif
+
 #endif /* ! C99 */
 
 #endif /* ! FLEXINT_H */
 
+/* begin standard C++ headers. */
+
 /* TODO: this is always defined, so inline it */
 #define yyconst const
 
@@ -193,21 +405,21 @@ struct yy_buffer_state
 	};
 #endif /* !YY_STRUCT_YY_BUFFER_STATE */
 
-void cmDependsJava_yyrestart (FILE *input_file ,yyscan_t yyscanner );
-void cmDependsJava_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmDependsJava_yy_create_buffer (FILE *file,int size ,yyscan_t yyscanner );
-void cmDependsJava_yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmDependsJava_yy_flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmDependsJava_yypush_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-void cmDependsJava_yypop_buffer_state (yyscan_t yyscanner );
+void yyrestart ( FILE *input_file , yyscan_t yyscanner );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size , yyscan_t yyscanner );
+void yy_delete_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yy_flush_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+void yypop_buffer_state ( yyscan_t yyscanner );
 
-YY_BUFFER_STATE cmDependsJava_yy_scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmDependsJava_yy_scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmDependsJava_yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len , yyscan_t yyscanner );
 
-void *cmDependsJava_yyalloc (yy_size_t ,yyscan_t yyscanner );
-void *cmDependsJava_yyrealloc (void *,yy_size_t ,yyscan_t yyscanner );
-void cmDependsJava_yyfree (void * ,yyscan_t yyscanner );
+void *yyalloc ( yy_size_t , yyscan_t yyscanner );
+void *yyrealloc ( void *, yy_size_t , yyscan_t yyscanner );
+void yyfree ( void * , yyscan_t yyscanner );
 
 /* Begin user sect3 */
 
@@ -227,42 +439,42 @@ void cmDependsJava_yyfree (void * ,yyscan_t yyscanner );
 #define YY_EXTRA_TYPE void *
 #endif
 
-int cmDependsJava_yylex_init (yyscan_t* scanner);
+int yylex_init (yyscan_t* scanner);
 
-int cmDependsJava_yylex_init_extra (YY_EXTRA_TYPE user_defined,yyscan_t* scanner);
+int yylex_init_extra ( YY_EXTRA_TYPE user_defined, yyscan_t* scanner);
 
 /* Accessor methods to globals.
    These are made visible to non-reentrant scanners for convenience. */
 
-int cmDependsJava_yylex_destroy (yyscan_t yyscanner );
+int yylex_destroy ( yyscan_t yyscanner );
 
-int cmDependsJava_yyget_debug (yyscan_t yyscanner );
+int yyget_debug ( yyscan_t yyscanner );
 
-void cmDependsJava_yyset_debug (int debug_flag ,yyscan_t yyscanner );
+void yyset_debug ( int debug_flag , yyscan_t yyscanner );
 
-YY_EXTRA_TYPE cmDependsJava_yyget_extra (yyscan_t yyscanner );
+YY_EXTRA_TYPE yyget_extra ( yyscan_t yyscanner );
 
-void cmDependsJava_yyset_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner );
+void yyset_extra ( YY_EXTRA_TYPE user_defined , yyscan_t yyscanner );
 
-FILE *cmDependsJava_yyget_in (yyscan_t yyscanner );
+FILE *yyget_in ( yyscan_t yyscanner );
 
-void cmDependsJava_yyset_in  (FILE * _in_str ,yyscan_t yyscanner );
+void yyset_in  ( FILE * _in_str , yyscan_t yyscanner );
 
-FILE *cmDependsJava_yyget_out (yyscan_t yyscanner );
+FILE *yyget_out ( yyscan_t yyscanner );
 
-void cmDependsJava_yyset_out  (FILE * _out_str ,yyscan_t yyscanner );
+void yyset_out  ( FILE * _out_str , yyscan_t yyscanner );
 
-			int cmDependsJava_yyget_leng (yyscan_t yyscanner );
+			int yyget_leng ( yyscan_t yyscanner );
 
-char *cmDependsJava_yyget_text (yyscan_t yyscanner );
+char *yyget_text ( yyscan_t yyscanner );
 
-int cmDependsJava_yyget_lineno (yyscan_t yyscanner );
+int yyget_lineno ( yyscan_t yyscanner );
 
-void cmDependsJava_yyset_lineno (int _line_number ,yyscan_t yyscanner );
+void yyset_lineno ( int _line_number , yyscan_t yyscanner );
 
-int cmDependsJava_yyget_column  (yyscan_t yyscanner );
+int yyget_column  ( yyscan_t yyscanner );
 
-void cmDependsJava_yyset_column (int _column_no ,yyscan_t yyscanner );
+void yyset_column ( int _column_no , yyscan_t yyscanner );
 
 /* Macros after this point can all be overridden by user definitions in
  * section 1.
@@ -270,18 +482,18 @@ void cmDependsJava_yyset_column (int _column_no ,yyscan_t yyscanner );
 
 #ifndef YY_SKIP_YYWRAP
 #ifdef __cplusplus
-extern "C" int cmDependsJava_yywrap (yyscan_t yyscanner );
+extern "C" int yywrap ( yyscan_t yyscanner );
 #else
-extern int cmDependsJava_yywrap (yyscan_t yyscanner );
+extern int yywrap ( yyscan_t yyscanner );
 #endif
 #endif
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char *,yyconst char *,int ,yyscan_t yyscanner);
+static void yy_flex_strncpy ( char *, const char *, int , yyscan_t yyscanner);
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
+static int yy_flex_strlen ( const char * , yyscan_t yyscanner);
 #endif
 
 #ifndef YY_NO_INPUT
@@ -309,9 +521,9 @@ static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
 #ifndef YY_DECL
 #define YY_DECL_IS_OURS 1
 
-extern int cmDependsJava_yylex (yyscan_t yyscanner);
+extern int yylex (yyscan_t yyscanner);
 
-#define YY_DECL int cmDependsJava_yylex (yyscan_t yyscanner)
+#define YY_DECL int yylex (yyscan_t yyscanner)
 #endif /* !YY_DECL */
 
 /* yy_get_previous_state - get the state just before the EOB char was reached */
@@ -328,9 +540,150 @@ extern int cmDependsJava_yylex (yyscan_t yyscanner);
 #undef YY_DECL
 #endif
 
-#line 174 "cmDependsJavaLexer.in.l"
-
+#ifndef cmDependsJava_yy_create_buffer_ALREADY_DEFINED
+#undef yy_create_buffer
+#endif
+#ifndef cmDependsJava_yy_delete_buffer_ALREADY_DEFINED
+#undef yy_delete_buffer
+#endif
+#ifndef cmDependsJava_yy_scan_buffer_ALREADY_DEFINED
+#undef yy_scan_buffer
+#endif
+#ifndef cmDependsJava_yy_scan_string_ALREADY_DEFINED
+#undef yy_scan_string
+#endif
+#ifndef cmDependsJava_yy_scan_bytes_ALREADY_DEFINED
+#undef yy_scan_bytes
+#endif
+#ifndef cmDependsJava_yy_init_buffer_ALREADY_DEFINED
+#undef yy_init_buffer
+#endif
+#ifndef cmDependsJava_yy_flush_buffer_ALREADY_DEFINED
+#undef yy_flush_buffer
+#endif
+#ifndef cmDependsJava_yy_load_buffer_state_ALREADY_DEFINED
+#undef yy_load_buffer_state
+#endif
+#ifndef cmDependsJava_yy_switch_to_buffer_ALREADY_DEFINED
+#undef yy_switch_to_buffer
+#endif
+#ifndef cmDependsJava_yypush_buffer_state_ALREADY_DEFINED
+#undef yypush_buffer_state
+#endif
+#ifndef cmDependsJava_yypop_buffer_state_ALREADY_DEFINED
+#undef yypop_buffer_state
+#endif
+#ifndef cmDependsJava_yyensure_buffer_stack_ALREADY_DEFINED
+#undef yyensure_buffer_stack
+#endif
+#ifndef cmDependsJava_yylex_ALREADY_DEFINED
+#undef yylex
+#endif
+#ifndef cmDependsJava_yyrestart_ALREADY_DEFINED
+#undef yyrestart
+#endif
+#ifndef cmDependsJava_yylex_init_ALREADY_DEFINED
+#undef yylex_init
+#endif
+#ifndef cmDependsJava_yylex_init_extra_ALREADY_DEFINED
+#undef yylex_init_extra
+#endif
+#ifndef cmDependsJava_yylex_destroy_ALREADY_DEFINED
+#undef yylex_destroy
+#endif
+#ifndef cmDependsJava_yyget_debug_ALREADY_DEFINED
+#undef yyget_debug
+#endif
+#ifndef cmDependsJava_yyset_debug_ALREADY_DEFINED
+#undef yyset_debug
+#endif
+#ifndef cmDependsJava_yyget_extra_ALREADY_DEFINED
+#undef yyget_extra
+#endif
+#ifndef cmDependsJava_yyset_extra_ALREADY_DEFINED
+#undef yyset_extra
+#endif
+#ifndef cmDependsJava_yyget_in_ALREADY_DEFINED
+#undef yyget_in
+#endif
+#ifndef cmDependsJava_yyset_in_ALREADY_DEFINED
+#undef yyset_in
+#endif
+#ifndef cmDependsJava_yyget_out_ALREADY_DEFINED
+#undef yyget_out
+#endif
+#ifndef cmDependsJava_yyset_out_ALREADY_DEFINED
+#undef yyset_out
+#endif
+#ifndef cmDependsJava_yyget_leng_ALREADY_DEFINED
+#undef yyget_leng
+#endif
+#ifndef cmDependsJava_yyget_text_ALREADY_DEFINED
+#undef yyget_text
+#endif
+#ifndef cmDependsJava_yyget_lineno_ALREADY_DEFINED
+#undef yyget_lineno
+#endif
+#ifndef cmDependsJava_yyset_lineno_ALREADY_DEFINED
+#undef yyset_lineno
+#endif
+#ifndef cmDependsJava_yyget_column_ALREADY_DEFINED
+#undef yyget_column
+#endif
+#ifndef cmDependsJava_yyset_column_ALREADY_DEFINED
+#undef yyset_column
+#endif
+#ifndef cmDependsJava_yywrap_ALREADY_DEFINED
+#undef yywrap
+#endif
+#ifndef cmDependsJava_yyget_lval_ALREADY_DEFINED
+#undef yyget_lval
+#endif
+#ifndef cmDependsJava_yyset_lval_ALREADY_DEFINED
+#undef yyset_lval
+#endif
+#ifndef cmDependsJava_yyget_lloc_ALREADY_DEFINED
+#undef yyget_lloc
+#endif
+#ifndef cmDependsJava_yyset_lloc_ALREADY_DEFINED
+#undef yyset_lloc
+#endif
+#ifndef cmDependsJava_yyalloc_ALREADY_DEFINED
+#undef yyalloc
+#endif
+#ifndef cmDependsJava_yyrealloc_ALREADY_DEFINED
+#undef yyrealloc
+#endif
+#ifndef cmDependsJava_yyfree_ALREADY_DEFINED
+#undef yyfree
+#endif
+#ifndef cmDependsJava_yytext_ALREADY_DEFINED
+#undef yytext
+#endif
+#ifndef cmDependsJava_yyleng_ALREADY_DEFINED
+#undef yyleng
+#endif
+#ifndef cmDependsJava_yyin_ALREADY_DEFINED
+#undef yyin
+#endif
+#ifndef cmDependsJava_yyout_ALREADY_DEFINED
+#undef yyout
+#endif
+#ifndef cmDependsJava_yy_flex_debug_ALREADY_DEFINED
+#undef yy_flex_debug
+#endif
+#ifndef cmDependsJava_yylineno_ALREADY_DEFINED
+#undef yylineno
+#endif
+#ifndef cmDependsJava_yytables_fload_ALREADY_DEFINED
+#undef yytables_fload
+#endif
+#ifndef cmDependsJava_yytables_destroy_ALREADY_DEFINED
+#undef yytables_destroy
+#endif
+#ifndef cmDependsJava_yyTABLES_NAME_ALREADY_DEFINED
+#undef yyTABLES_NAME
+#endif
 
-#line 335 "cmDependsJavaLexer.h"
 #undef cmDependsJava_yyIN_HEADER
 #endif /* cmDependsJava_yyHEADER_H */
diff --git a/Source/LexerParser/cmDependsJavaLexer.in.l b/Source/LexerParser/cmDependsJavaLexer.in.l
index 8cb42b17a..01a0fa302 100644
--- a/Source/LexerParser/cmDependsJavaLexer.in.l
+++ b/Source/LexerParser/cmDependsJavaLexer.in.l
@@ -7,13 +7,12 @@ This file must be translated to C++ and modified to build everywhere.
 
 Run flex >= 2.6 like this:
 
-  flex --nounistd -DFLEXINT_H --prefix=cmDependsJava_yy --header-file=cmDependsJavaLexer.h -ocmDependsJavaLexer.cxx cmDependsJavaLexer.in.l
+  flex --nounistd -DFLEXINT_H --noline --header-file=cmDependsJavaLexer.h -ocmDependsJavaLexer.cxx cmDependsJavaLexer.in.l
 
 Modify cmDependsJavaLexer.cxx:
-  - remove trailing whitespace: sed -i 's/\s*$//' cmDependsJavaLexer.h cmDependsJavaLexer.cxx
-  - remove blank lines at end of file
-  - #include "cmStandardLexer.h" at the top
-  - add cast in yy_scan_bytes for loop condition of _yybytes_len to size_t
+  - remove trailing whitespace:              sed -i 's/\s*$//' cmDependsJavaLexer.h cmDependsJavaLexer.cxx
+  - remove blank lines at end of file:       sed -i '${/^$/d;}' cmDependsJavaLexer.h cmDependsJavaLexer.cxx
+  - #include "cmStandardLexer.h" at the top: sed -i '1i#include "cmStandardLexer.h"' cmDependsJavaLexer.cxx
 
 */
 
@@ -38,6 +37,8 @@ Modify cmDependsJavaLexer.cxx:
 /*--------------------------------------------------------------------------*/
 %}
 
+%option prefix="cmDependsJava_yy"
+
 %option reentrant
 %option noyywrap
 %pointer
diff --git a/Source/LexerParser/cmExprLexer.cxx b/Source/LexerParser/cmExprLexer.cxx
index fb6f0db98..81a1ec502 100644
--- a/Source/LexerParser/cmExprLexer.cxx
+++ b/Source/LexerParser/cmExprLexer.cxx
@@ -1,7 +1,4 @@
 #include "cmStandardLexer.h"
-#line 2 "cmExprLexer.cxx"
-
-#line 4 "cmExprLexer.cxx"
 
 #define FLEXINT_H 1
 #define  YY_INT_ALIGNED short int
@@ -11,11 +8,221 @@
 #define FLEX_SCANNER
 #define YY_FLEX_MAJOR_VERSION 2
 #define YY_FLEX_MINOR_VERSION 6
-#define YY_FLEX_SUBMINOR_VERSION 1
+#define YY_FLEX_SUBMINOR_VERSION 4
 #if YY_FLEX_SUBMINOR_VERSION > 0
 #define FLEX_BETA
 #endif
 
+#ifdef yy_create_buffer
+#define cmExpr_yy_create_buffer_ALREADY_DEFINED
+#else
+#define yy_create_buffer cmExpr_yy_create_buffer
+#endif
+
+#ifdef yy_delete_buffer
+#define cmExpr_yy_delete_buffer_ALREADY_DEFINED
+#else
+#define yy_delete_buffer cmExpr_yy_delete_buffer
+#endif
+
+#ifdef yy_scan_buffer
+#define cmExpr_yy_scan_buffer_ALREADY_DEFINED
+#else
+#define yy_scan_buffer cmExpr_yy_scan_buffer
+#endif
+
+#ifdef yy_scan_string
+#define cmExpr_yy_scan_string_ALREADY_DEFINED
+#else
+#define yy_scan_string cmExpr_yy_scan_string
+#endif
+
+#ifdef yy_scan_bytes
+#define cmExpr_yy_scan_bytes_ALREADY_DEFINED
+#else
+#define yy_scan_bytes cmExpr_yy_scan_bytes
+#endif
+
+#ifdef yy_init_buffer
+#define cmExpr_yy_init_buffer_ALREADY_DEFINED
+#else
+#define yy_init_buffer cmExpr_yy_init_buffer
+#endif
+
+#ifdef yy_flush_buffer
+#define cmExpr_yy_flush_buffer_ALREADY_DEFINED
+#else
+#define yy_flush_buffer cmExpr_yy_flush_buffer
+#endif
+
+#ifdef yy_load_buffer_state
+#define cmExpr_yy_load_buffer_state_ALREADY_DEFINED
+#else
+#define yy_load_buffer_state cmExpr_yy_load_buffer_state
+#endif
+
+#ifdef yy_switch_to_buffer
+#define cmExpr_yy_switch_to_buffer_ALREADY_DEFINED
+#else
+#define yy_switch_to_buffer cmExpr_yy_switch_to_buffer
+#endif
+
+#ifdef yypush_buffer_state
+#define cmExpr_yypush_buffer_state_ALREADY_DEFINED
+#else
+#define yypush_buffer_state cmExpr_yypush_buffer_state
+#endif
+
+#ifdef yypop_buffer_state
+#define cmExpr_yypop_buffer_state_ALREADY_DEFINED
+#else
+#define yypop_buffer_state cmExpr_yypop_buffer_state
+#endif
+
+#ifdef yyensure_buffer_stack
+#define cmExpr_yyensure_buffer_stack_ALREADY_DEFINED
+#else
+#define yyensure_buffer_stack cmExpr_yyensure_buffer_stack
+#endif
+
+#ifdef yylex
+#define cmExpr_yylex_ALREADY_DEFINED
+#else
+#define yylex cmExpr_yylex
+#endif
+
+#ifdef yyrestart
+#define cmExpr_yyrestart_ALREADY_DEFINED
+#else
+#define yyrestart cmExpr_yyrestart
+#endif
+
+#ifdef yylex_init
+#define cmExpr_yylex_init_ALREADY_DEFINED
+#else
+#define yylex_init cmExpr_yylex_init
+#endif
+
+#ifdef yylex_init_extra
+#define cmExpr_yylex_init_extra_ALREADY_DEFINED
+#else
+#define yylex_init_extra cmExpr_yylex_init_extra
+#endif
+
+#ifdef yylex_destroy
+#define cmExpr_yylex_destroy_ALREADY_DEFINED
+#else
+#define yylex_destroy cmExpr_yylex_destroy
+#endif
+
+#ifdef yyget_debug
+#define cmExpr_yyget_debug_ALREADY_DEFINED
+#else
+#define yyget_debug cmExpr_yyget_debug
+#endif
+
+#ifdef yyset_debug
+#define cmExpr_yyset_debug_ALREADY_DEFINED
+#else
+#define yyset_debug cmExpr_yyset_debug
+#endif
+
+#ifdef yyget_extra
+#define cmExpr_yyget_extra_ALREADY_DEFINED
+#else
+#define yyget_extra cmExpr_yyget_extra
+#endif
+
+#ifdef yyset_extra
+#define cmExpr_yyset_extra_ALREADY_DEFINED
+#else
+#define yyset_extra cmExpr_yyset_extra
+#endif
+
+#ifdef yyget_in
+#define cmExpr_yyget_in_ALREADY_DEFINED
+#else
+#define yyget_in cmExpr_yyget_in
+#endif
+
+#ifdef yyset_in
+#define cmExpr_yyset_in_ALREADY_DEFINED
+#else
+#define yyset_in cmExpr_yyset_in
+#endif
+
+#ifdef yyget_out
+#define cmExpr_yyget_out_ALREADY_DEFINED
+#else
+#define yyget_out cmExpr_yyget_out
+#endif
+
+#ifdef yyset_out
+#define cmExpr_yyset_out_ALREADY_DEFINED
+#else
+#define yyset_out cmExpr_yyset_out
+#endif
+
+#ifdef yyget_leng
+#define cmExpr_yyget_leng_ALREADY_DEFINED
+#else
+#define yyget_leng cmExpr_yyget_leng
+#endif
+
+#ifdef yyget_text
+#define cmExpr_yyget_text_ALREADY_DEFINED
+#else
+#define yyget_text cmExpr_yyget_text
+#endif
+
+#ifdef yyget_lineno
+#define cmExpr_yyget_lineno_ALREADY_DEFINED
+#else
+#define yyget_lineno cmExpr_yyget_lineno
+#endif
+
+#ifdef yyset_lineno
+#define cmExpr_yyset_lineno_ALREADY_DEFINED
+#else
+#define yyset_lineno cmExpr_yyset_lineno
+#endif
+
+#ifdef yyget_column
+#define cmExpr_yyget_column_ALREADY_DEFINED
+#else
+#define yyget_column cmExpr_yyget_column
+#endif
+
+#ifdef yyset_column
+#define cmExpr_yyset_column_ALREADY_DEFINED
+#else
+#define yyset_column cmExpr_yyset_column
+#endif
+
+#ifdef yywrap
+#define cmExpr_yywrap_ALREADY_DEFINED
+#else
+#define yywrap cmExpr_yywrap
+#endif
+
+#ifdef yyalloc
+#define cmExpr_yyalloc_ALREADY_DEFINED
+#else
+#define yyalloc cmExpr_yyalloc
+#endif
+
+#ifdef yyrealloc
+#define cmExpr_yyrealloc_ALREADY_DEFINED
+#else
+#define yyrealloc cmExpr_yyrealloc
+#endif
+
+#ifdef yyfree
+#define cmExpr_yyfree_ALREADY_DEFINED
+#else
+#define yyfree cmExpr_yyfree
+#endif
+
 /* First, we deal with  platform-specific or compiler-specific issues. */
 
 /* begin standard C headers. */
@@ -86,10 +293,16 @@ typedef unsigned int flex_uint32_t;
 #define UINT32_MAX             (4294967295U)
 #endif
 
+#ifndef SIZE_MAX
+#define SIZE_MAX               (~(size_t)0)
+#endif
+
 #endif /* ! C99 */
 
 #endif /* ! FLEXINT_H */
 
+/* begin standard C++ headers. */
+
 /* TODO: this is always defined, so inline it */
 #define yyconst const
 
@@ -102,12 +315,10 @@ typedef unsigned int flex_uint32_t;
 /* Returned upon end-of-file. */
 #define YY_NULL 0
 
-/* Promotes a possibly negative, possibly signed char to an unsigned
- * integer for use as an array index.  If the signed char is negative,
- * we want to instead treat it as an 8-bit unsigned char, hence the
- * double cast.
+/* Promotes a possibly negative, possibly signed char to an
+ *   integer in range [0..255] for use as an array index.
  */
-#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
+#define YY_SC_TO_UI(c) ((YY_CHAR) (c))
 
 /* An opaque pointer. */
 #ifndef YY_TYPEDEF_YY_SCANNER_T
@@ -131,20 +342,16 @@ typedef void* yyscan_t;
  * definition of BEGIN.
  */
 #define BEGIN yyg->yy_start = 1 + 2 *
-
 /* Translate the current start state into a value that can be later handed
  * to BEGIN to return to the state.  The YYSTATE alias is for lex
  * compatibility.
  */
 #define YY_START ((yyg->yy_start - 1) / 2)
 #define YYSTATE YY_START
-
 /* Action number for EOF rule of a given start state. */
 #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
-
 /* Special action meaning "start processing a new file". */
-#define YY_NEW_FILE cmExpr_yyrestart(yyin ,yyscanner )
-
+#define YY_NEW_FILE yyrestart( yyin , yyscanner )
 #define YY_END_OF_BUFFER_CHAR 0
 
 /* Size of default input buffer. */
@@ -194,7 +401,6 @@ typedef size_t yy_size_t;
 		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
 		} \
 	while ( 0 )
-
 #define unput(c) yyunput( c, yyg->yytext_ptr , yyscanner )
 
 #ifndef YY_STRUCT_YY_BUFFER_STATE
@@ -254,7 +460,7 @@ struct yy_buffer_state
 	 * possible backing-up.
 	 *
 	 * When we actually see the EOF, we change the status to "new"
-	 * (via cmExpr_yyrestart()), so that the user can continue scanning by
+	 * (via yyrestart()), so that the user can continue scanning by
 	 * just pointing yyin at a new input file.
 	 */
 #define YY_BUFFER_EOF_PENDING 2
@@ -271,73 +477,67 @@ struct yy_buffer_state
 #define YY_CURRENT_BUFFER ( yyg->yy_buffer_stack \
                           ? yyg->yy_buffer_stack[yyg->yy_buffer_stack_top] \
                           : NULL)
-
 /* Same as previous macro, but useful when we know that the buffer stack is not
  * NULL or when we need an lvalue. For internal use only.
  */
 #define YY_CURRENT_BUFFER_LVALUE yyg->yy_buffer_stack[yyg->yy_buffer_stack_top]
 
-void cmExpr_yyrestart (FILE *input_file ,yyscan_t yyscanner );
-void cmExpr_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmExpr_yy_create_buffer (FILE *file,int size ,yyscan_t yyscanner );
-void cmExpr_yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmExpr_yy_flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmExpr_yypush_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-void cmExpr_yypop_buffer_state (yyscan_t yyscanner );
-
-static void cmExpr_yyensure_buffer_stack (yyscan_t yyscanner );
-static void cmExpr_yy_load_buffer_state (yyscan_t yyscanner );
-static void cmExpr_yy_init_buffer (YY_BUFFER_STATE b,FILE *file ,yyscan_t yyscanner );
+void yyrestart ( FILE *input_file , yyscan_t yyscanner );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size , yyscan_t yyscanner );
+void yy_delete_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yy_flush_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+void yypop_buffer_state ( yyscan_t yyscanner );
 
-#define YY_FLUSH_BUFFER cmExpr_yy_flush_buffer(YY_CURRENT_BUFFER ,yyscanner)
+static void yyensure_buffer_stack ( yyscan_t yyscanner );
+static void yy_load_buffer_state ( yyscan_t yyscanner );
+static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file , yyscan_t yyscanner );
+#define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER , yyscanner)
 
-YY_BUFFER_STATE cmExpr_yy_scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmExpr_yy_scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmExpr_yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len , yyscan_t yyscanner );
 
-void *cmExpr_yyalloc (yy_size_t ,yyscan_t yyscanner );
-void *cmExpr_yyrealloc (void *,yy_size_t ,yyscan_t yyscanner );
-void cmExpr_yyfree (void * ,yyscan_t yyscanner );
-
-#define yy_new_buffer cmExpr_yy_create_buffer
+void *yyalloc ( yy_size_t , yyscan_t yyscanner );
+void *yyrealloc ( void *, yy_size_t , yyscan_t yyscanner );
+void yyfree ( void * , yyscan_t yyscanner );
 
+#define yy_new_buffer yy_create_buffer
 #define yy_set_interactive(is_interactive) \
 	{ \
 	if ( ! YY_CURRENT_BUFFER ){ \
-        cmExpr_yyensure_buffer_stack (yyscanner); \
+        yyensure_buffer_stack (yyscanner); \
 		YY_CURRENT_BUFFER_LVALUE =    \
-            cmExpr_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); \
 	} \
 	YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
 	}
-
 #define yy_set_bol(at_bol) \
 	{ \
 	if ( ! YY_CURRENT_BUFFER ){\
-        cmExpr_yyensure_buffer_stack (yyscanner); \
+        yyensure_buffer_stack (yyscanner); \
 		YY_CURRENT_BUFFER_LVALUE =    \
-            cmExpr_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); \
 	} \
 	YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
 	}
-
 #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
 
 /* Begin user sect3 */
 
 #define cmExpr_yywrap(yyscanner) (/*CONSTCOND*/1)
 #define YY_SKIP_YYWRAP
-
-typedef unsigned char YY_CHAR;
+typedef flex_uint8_t YY_CHAR;
 
 typedef int yy_state_type;
 
 #define yytext_ptr yytext_r
 
-static yy_state_type yy_get_previous_state (yyscan_t yyscanner );
-static yy_state_type yy_try_NUL_trans (yy_state_type current_state  ,yyscan_t yyscanner);
-static int yy_get_next_buffer (yyscan_t yyscanner );
-static void yynoreturn yy_fatal_error (yyconst char* msg ,yyscan_t yyscanner );
+static yy_state_type yy_get_previous_state ( yyscan_t yyscanner );
+static yy_state_type yy_try_NUL_trans ( yy_state_type current_state  , yyscan_t yyscanner);
+static int yy_get_next_buffer ( yyscan_t yyscanner );
+static void yynoreturn yy_fatal_error ( const char* msg , yyscan_t yyscanner );
 
 /* Done after the current pattern has been matched and before the
  * corresponding action - sets up yytext.
@@ -348,7 +548,6 @@ static void yynoreturn yy_fatal_error (yyconst char* msg ,yyscan_t yyscanner );
 	yyg->yy_hold_char = *yy_cp; \
 	*yy_cp = '\0'; \
 	yyg->yy_c_buf_p = yy_cp;
-
 #define YY_NUM_RULES 15
 #define YY_END_OF_BUFFER 16
 /* This struct is not used in this scanner,
@@ -358,14 +557,14 @@ struct yy_trans_info
 	flex_int32_t yy_verify;
 	flex_int32_t yy_nxt;
 	};
-static yyconst flex_int16_t yy_accept[23] =
+static const flex_int16_t yy_accept[23] =
     {   0,
         0,    0,   16,   15,    6,    8,   13,   14,    4,    2,
         3,    5,    1,   15,   15,    9,    7,   10,    1,   11,
        12,    0
     } ;
 
-static yyconst YY_CHAR yy_ec[256] =
+static const YY_CHAR yy_ec[256] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
@@ -397,27 +596,27 @@ static yyconst YY_CHAR yy_ec[256] =
         1,    1,    1,    1,    1
     } ;
 
-static yyconst YY_CHAR yy_meta[16] =
+static const YY_CHAR yy_meta[16] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1
     } ;
 
-static yyconst flex_uint16_t yy_base[23] =
+static const flex_int16_t yy_base[23] =
     {   0,
         0,    0,   20,   21,   21,   21,   21,   21,   21,   21,
        21,   21,    9,    7,    5,   21,   21,   21,    6,   21,
        21,   21
     } ;
 
-static yyconst flex_int16_t yy_def[23] =
+static const flex_int16_t yy_def[23] =
     {   0,
        22,    1,   22,   22,   22,   22,   22,   22,   22,   22,
        22,   22,   22,   22,   22,   22,   22,   22,   22,   22,
        22,    0
     } ;
 
-static yyconst flex_uint16_t yy_nxt[37] =
+static const flex_int16_t yy_nxt[37] =
     {   0,
         4,    5,    6,    7,    8,    9,   10,   11,   12,   13,
        14,   15,   16,   17,   18,   19,   21,   20,   19,   22,
@@ -425,7 +624,7 @@ static yyconst flex_uint16_t yy_nxt[37] =
        22,   22,   22,   22,   22,   22
     } ;
 
-static yyconst flex_int16_t yy_chk[37] =
+static const flex_int16_t yy_chk[37] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,   19,   15,   14,   13,    3,
@@ -440,8 +639,6 @@ static yyconst flex_int16_t yy_chk[37] =
 #define yymore() yymore_used_but_not_detected
 #define YY_MORE_ADJ 0
 #define YY_RESTORE_YY_MORE_OFFSET
-#line 1 "cmExprLexer.in.l"
-#line 2 "cmExprLexer.in.l"
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
 /*
@@ -450,13 +647,12 @@ This file must be translated to C++ and modified to build everywhere.
 
 Run flex >= 2.6 like this:
 
-  flex --nounistd -DFLEXINT_H --prefix=cmExpr_yy --header-file=cmExprLexer.h -ocmExprLexer.cxx cmExprLexer.in.l
+  flex --nounistd -DFLEXINT_H --noline --header-file=cmExprLexer.h -ocmExprLexer.cxx cmExprLexer.in.l
 
 Modify cmExprLexer.cxx:
-  - remove trailing whitespace: sed -i 's/\s*$//' cmExprLexer.h cmExprLexer.cxx
-  - remove blank lines at end of file
-  - #include "cmStandardLexer.h" at the top
-  - add cast in cmExpr_yy_scan_bytes for loop condition of _yybytes_len to size_t
+  - remove trailing whitespace:              sed -i 's/\s*$//' cmExprLexer.h cmExprLexer.cxx
+  - remove blank lines at end of file:       sed -i '${/^$/d;}' cmExprLexer.h cmExprLexer.cxx
+  - #include "cmStandardLexer.h" at the top: sed -i '1i#include "cmStandardLexer.h"' cmExprLexer.cxx
 
 */
 
@@ -473,7 +669,6 @@ Modify cmExprLexer.cxx:
 #include "cmExprParserTokens.h"
 
 /*--------------------------------------------------------------------------*/
-#line 476 "cmExprLexer.cxx"
 
 #define INITIAL 0
 
@@ -515,44 +710,44 @@ struct yyguts_t
 
     }; /* end struct yyguts_t */
 
-static int yy_init_globals (yyscan_t yyscanner );
+static int yy_init_globals ( yyscan_t yyscanner );
 
-int cmExpr_yylex_init (yyscan_t* scanner);
+int yylex_init (yyscan_t* scanner);
 
-int cmExpr_yylex_init_extra (YY_EXTRA_TYPE user_defined,yyscan_t* scanner);
+int yylex_init_extra ( YY_EXTRA_TYPE user_defined, yyscan_t* scanner);
 
 /* Accessor methods to globals.
    These are made visible to non-reentrant scanners for convenience. */
 
-int cmExpr_yylex_destroy (yyscan_t yyscanner );
+int yylex_destroy ( yyscan_t yyscanner );
 
-int cmExpr_yyget_debug (yyscan_t yyscanner );
+int yyget_debug ( yyscan_t yyscanner );
 
-void cmExpr_yyset_debug (int debug_flag ,yyscan_t yyscanner );
+void yyset_debug ( int debug_flag , yyscan_t yyscanner );
 
-YY_EXTRA_TYPE cmExpr_yyget_extra (yyscan_t yyscanner );
+YY_EXTRA_TYPE yyget_extra ( yyscan_t yyscanner );
 
-void cmExpr_yyset_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner );
+void yyset_extra ( YY_EXTRA_TYPE user_defined , yyscan_t yyscanner );
 
-FILE *cmExpr_yyget_in (yyscan_t yyscanner );
+FILE *yyget_in ( yyscan_t yyscanner );
 
-void cmExpr_yyset_in  (FILE * _in_str ,yyscan_t yyscanner );
+void yyset_in  ( FILE * _in_str , yyscan_t yyscanner );
 
-FILE *cmExpr_yyget_out (yyscan_t yyscanner );
+FILE *yyget_out ( yyscan_t yyscanner );
 
-void cmExpr_yyset_out  (FILE * _out_str ,yyscan_t yyscanner );
+void yyset_out  ( FILE * _out_str , yyscan_t yyscanner );
 
-			int cmExpr_yyget_leng (yyscan_t yyscanner );
+			int yyget_leng ( yyscan_t yyscanner );
 
-char *cmExpr_yyget_text (yyscan_t yyscanner );
+char *yyget_text ( yyscan_t yyscanner );
 
-int cmExpr_yyget_lineno (yyscan_t yyscanner );
+int yyget_lineno ( yyscan_t yyscanner );
 
-void cmExpr_yyset_lineno (int _line_number ,yyscan_t yyscanner );
+void yyset_lineno ( int _line_number , yyscan_t yyscanner );
 
-int cmExpr_yyget_column  (yyscan_t yyscanner );
+int yyget_column  ( yyscan_t yyscanner );
 
-void cmExpr_yyset_column (int _column_no ,yyscan_t yyscanner );
+void yyset_column ( int _column_no , yyscan_t yyscanner );
 
 /* Macros after this point can all be overridden by user definitions in
  * section 1.
@@ -560,32 +755,31 @@ void cmExpr_yyset_column (int _column_no ,yyscan_t yyscanner );
 
 #ifndef YY_SKIP_YYWRAP
 #ifdef __cplusplus
-extern "C" int cmExpr_yywrap (yyscan_t yyscanner );
+extern "C" int yywrap ( yyscan_t yyscanner );
 #else
-extern int cmExpr_yywrap (yyscan_t yyscanner );
+extern int yywrap ( yyscan_t yyscanner );
 #endif
 #endif
 
 #ifndef YY_NO_UNPUT
 
-    static void yyunput (int c,char *buf_ptr  ,yyscan_t yyscanner);
+    static void yyunput ( int c, char *buf_ptr  , yyscan_t yyscanner);
 
 #endif
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char *,yyconst char *,int ,yyscan_t yyscanner);
+static void yy_flex_strncpy ( char *, const char *, int , yyscan_t yyscanner);
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
+static int yy_flex_strlen ( const char * , yyscan_t yyscanner);
 #endif
 
 #ifndef YY_NO_INPUT
-
 #ifdef __cplusplus
-static int yyinput (yyscan_t yyscanner );
+static int yyinput ( yyscan_t yyscanner );
 #else
-static int input (yyscan_t yyscanner );
+static int input ( yyscan_t yyscanner );
 #endif
 
 #endif
@@ -616,7 +810,7 @@ static int input (yyscan_t yyscanner );
 	if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
 		{ \
 		int c = '*'; \
-		size_t n; \
+		int n; \
 		for ( n = 0; n < max_size && \
 			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
 			buf[n] = (char) c; \
@@ -629,7 +823,7 @@ static int input (yyscan_t yyscanner );
 	else \
 		{ \
 		errno=0; \
-		while ( (result = (int) fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
+		while ( (result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin)) \
 			{ \
 			if( errno != EINTR) \
 				{ \
@@ -670,9 +864,9 @@ static int input (yyscan_t yyscanner );
 #ifndef YY_DECL
 #define YY_DECL_IS_OURS 1
 
-extern int cmExpr_yylex (yyscan_t yyscanner);
+extern int yylex (yyscan_t yyscanner);
 
-#define YY_DECL int cmExpr_yylex (yyscan_t yyscanner)
+#define YY_DECL int yylex (yyscan_t yyscanner)
 #endif /* !YY_DECL */
 
 /* Code executed at the beginning of each rule, after yytext and yyleng
@@ -717,19 +911,15 @@ YY_DECL
 			yyout = stdout;
 
 		if ( ! YY_CURRENT_BUFFER ) {
-			cmExpr_yyensure_buffer_stack (yyscanner);
+			yyensure_buffer_stack (yyscanner);
 			YY_CURRENT_BUFFER_LVALUE =
-				cmExpr_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+				yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner);
 		}
 
-		cmExpr_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 		}
 
 	{
-#line 39 "cmExprLexer.in.l"
-
-
-#line 732 "cmExprLexer.cxx"
 
 	while ( /*CONSTCOND*/1 )		/* loops until end-of-file is reached */
 		{
@@ -757,9 +947,9 @@ yy_match:
 				{
 				yy_current_state = (int) yy_def[yy_current_state];
 				if ( yy_current_state >= 23 )
-					yy_c = yy_meta[(unsigned int) yy_c];
+					yy_c = yy_meta[yy_c];
 				}
-			yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
+			yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 			++yy_cp;
 			}
 		while ( yy_base[yy_current_state] != 21 );
@@ -788,80 +978,64 @@ do_action:	/* This label is used only to access EOF actions. */
 
 case 1:
 YY_RULE_SETUP
-#line 41 "cmExprLexer.in.l"
 { yylvalp->Number = atoi(yytext); return exp_NUMBER; }
 	YY_BREAK
 case 2:
 YY_RULE_SETUP
-#line 43 "cmExprLexer.in.l"
 { return exp_PLUS; }
 	YY_BREAK
 case 3:
 YY_RULE_SETUP
-#line 44 "cmExprLexer.in.l"
 { return exp_MINUS; }
 	YY_BREAK
 case 4:
 YY_RULE_SETUP
-#line 45 "cmExprLexer.in.l"
 { return exp_TIMES; }
 	YY_BREAK
 case 5:
 YY_RULE_SETUP
-#line 46 "cmExprLexer.in.l"
 { return exp_DIVIDE; }
 	YY_BREAK
 case 6:
 YY_RULE_SETUP
-#line 47 "cmExprLexer.in.l"
 { return exp_MOD; }
 	YY_BREAK
 case 7:
 YY_RULE_SETUP
-#line 48 "cmExprLexer.in.l"
 { return exp_OR; }
 	YY_BREAK
 case 8:
 YY_RULE_SETUP
-#line 49 "cmExprLexer.in.l"
 { return exp_AND; }
 	YY_BREAK
 case 9:
 YY_RULE_SETUP
-#line 50 "cmExprLexer.in.l"
 { return exp_XOR; }
 	YY_BREAK
 case 10:
 YY_RULE_SETUP
-#line 51 "cmExprLexer.in.l"
 { return exp_NOT; }
 	YY_BREAK
 case 11:
 YY_RULE_SETUP
-#line 52 "cmExprLexer.in.l"
 { return exp_SHIFTLEFT; }
 	YY_BREAK
 case 12:
 YY_RULE_SETUP
-#line 53 "cmExprLexer.in.l"
 { return exp_SHIFTRIGHT; }
 	YY_BREAK
 case 13:
 YY_RULE_SETUP
-#line 54 "cmExprLexer.in.l"
 { return exp_OPENPARENT; }
 	YY_BREAK
 case 14:
 YY_RULE_SETUP
-#line 55 "cmExprLexer.in.l"
 { return exp_CLOSEPARENT; }
 	YY_BREAK
 case 15:
 YY_RULE_SETUP
-#line 57 "cmExprLexer.in.l"
 ECHO;
 	YY_BREAK
-#line 864 "cmExprLexer.cxx"
 case YY_STATE_EOF(INITIAL):
 	yyterminate();
 
@@ -879,7 +1053,7 @@ case YY_STATE_EOF(INITIAL):
 			/* We're scanning a new file or input source.  It's
 			 * possible that this happened because the user
 			 * just pointed yyin at a new source and called
-			 * cmExpr_yylex().  If so, then we have to assure
+			 * yylex().  If so, then we have to assure
 			 * consistency between YY_CURRENT_BUFFER and our
 			 * globals.  Here is the right place to do so, because
 			 * this is the first action (other than possibly a
@@ -939,7 +1113,7 @@ case YY_STATE_EOF(INITIAL):
 				{
 				yyg->yy_did_buffer_switch_on_eof = 0;
 
-				if ( cmExpr_yywrap(yyscanner ) )
+				if ( yywrap( yyscanner ) )
 					{
 					/* Note: because we've taken care in
 					 * yy_get_next_buffer() to have set up
@@ -993,7 +1167,7 @@ case YY_STATE_EOF(INITIAL):
 	} /* end of action switch */
 		} /* end of scanning one token */
 	} /* end of user's declarations */
-} /* end of cmExpr_yylex */
+} /* end of yylex */
 
 /* yy_get_next_buffer - try to read in a new buffer
  *
@@ -1007,7 +1181,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
 	char *source = yyg->yytext_ptr;
-	yy_size_t number_to_move, i;
+	int number_to_move, i;
 	int ret_val;
 
 	if ( yyg->yy_c_buf_p > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] )
@@ -1036,7 +1210,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 	/* Try to read more data. */
 
 	/* First move last chars to start of buffer. */
-	number_to_move = (yy_size_t) (yyg->yy_c_buf_p - yyg->yytext_ptr) - 1;
+	number_to_move = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr - 1);
 
 	for ( i = 0; i < number_to_move; ++i )
 		*(dest++) = *(source++);
@@ -1072,7 +1246,8 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 
 				b->yy_ch_buf = (char *)
 					/* Include room in for 2 EOB chars. */
-					cmExpr_yyrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2 ,yyscanner );
+					yyrealloc( (void *) b->yy_ch_buf,
+							 (yy_size_t) (b->yy_buf_size + 2) , yyscanner );
 				}
 			else
 				/* Can't grow it, we don't own it. */
@@ -1104,7 +1279,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		if ( number_to_move == YY_MORE_ADJ )
 			{
 			ret_val = EOB_ACT_END_OF_FILE;
-			cmExpr_yyrestart(yyin  ,yyscanner);
+			yyrestart( yyin  , yyscanner);
 			}
 
 		else
@@ -1118,12 +1293,15 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 	else
 		ret_val = EOB_ACT_CONTINUE_SCAN;
 
-	if ((int) (yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
+	if ((yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
 		/* Extend the array by 50%, plus the number we really need. */
 		int new_size = yyg->yy_n_chars + number_to_move + (yyg->yy_n_chars >> 1);
-		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) cmExpr_yyrealloc((void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf,new_size ,yyscanner );
+		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc(
+			(void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size , yyscanner );
 		if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
 			YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
+		/* "- 2" to take care of EOB's */
+		YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2);
 	}
 
 	yyg->yy_n_chars += number_to_move;
@@ -1157,9 +1335,9 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 			{
 			yy_current_state = (int) yy_def[yy_current_state];
 			if ( yy_current_state >= 23 )
-				yy_c = yy_meta[(unsigned int) yy_c];
+				yy_c = yy_meta[yy_c];
 			}
-		yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
+		yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 		}
 
 	return yy_current_state;
@@ -1186,9 +1364,9 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		{
 		yy_current_state = (int) yy_def[yy_current_state];
 		if ( yy_current_state >= 23 )
-			yy_c = yy_meta[(unsigned int) yy_c];
+			yy_c = yy_meta[yy_c];
 		}
-	yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
+	yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 	yy_is_jam = (yy_current_state == 22);
 
 	(void)yyg;
@@ -1262,7 +1440,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 
 		else
 			{ /* need more input */
-			int offset = yyg->yy_c_buf_p - yyg->yytext_ptr;
+			int offset = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr);
 			++yyg->yy_c_buf_p;
 
 			switch ( yy_get_next_buffer( yyscanner ) )
@@ -1279,13 +1457,13 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 					 */
 
 					/* Reset buffer status. */
-					cmExpr_yyrestart(yyin ,yyscanner);
+					yyrestart( yyin , yyscanner);
 
 					/*FALLTHROUGH*/
 
 				case EOB_ACT_END_OF_FILE:
 					{
-					if ( cmExpr_yywrap(yyscanner ) )
+					if ( yywrap( yyscanner ) )
 						return 0;
 
 					if ( ! yyg->yy_did_buffer_switch_on_eof )
@@ -1317,34 +1495,34 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @note This function does not reset the start condition to @c INITIAL .
  */
-    void cmExpr_yyrestart  (FILE * input_file , yyscan_t yyscanner)
+    void yyrestart  (FILE * input_file , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	if ( ! YY_CURRENT_BUFFER ){
-        cmExpr_yyensure_buffer_stack (yyscanner);
+        yyensure_buffer_stack (yyscanner);
 		YY_CURRENT_BUFFER_LVALUE =
-            cmExpr_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner);
 	}
 
-	cmExpr_yy_init_buffer(YY_CURRENT_BUFFER,input_file ,yyscanner);
-	cmExpr_yy_load_buffer_state(yyscanner );
+	yy_init_buffer( YY_CURRENT_BUFFER, input_file , yyscanner);
+	yy_load_buffer_state( yyscanner );
 }
 
 /** Switch to a different input buffer.
  * @param new_buffer The new input buffer.
  * @param yyscanner The scanner object.
  */
-    void cmExpr_yy_switch_to_buffer  (YY_BUFFER_STATE  new_buffer , yyscan_t yyscanner)
+    void yy_switch_to_buffer  (YY_BUFFER_STATE  new_buffer , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	/* TODO. We should be able to replace this entire function body
 	 * with
-	 *		cmExpr_yypop_buffer_state();
-	 *		cmExpr_yypush_buffer_state(new_buffer);
+	 *		yypop_buffer_state();
+	 *		yypush_buffer_state(new_buffer);
      */
-	cmExpr_yyensure_buffer_stack (yyscanner);
+	yyensure_buffer_stack (yyscanner);
 	if ( YY_CURRENT_BUFFER == new_buffer )
 		return;
 
@@ -1357,17 +1535,17 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		}
 
 	YY_CURRENT_BUFFER_LVALUE = new_buffer;
-	cmExpr_yy_load_buffer_state(yyscanner );
+	yy_load_buffer_state( yyscanner );
 
 	/* We don't actually know whether we did this switch during
-	 * EOF (cmExpr_yywrap()) processing, but the only time this flag
-	 * is looked at is after cmExpr_yywrap() is called, so it's safe
+	 * EOF (yywrap()) processing, but the only time this flag
+	 * is looked at is after yywrap() is called, so it's safe
 	 * to go ahead and always set it.
 	 */
 	yyg->yy_did_buffer_switch_on_eof = 1;
 }
 
-static void cmExpr_yy_load_buffer_state  (yyscan_t yyscanner)
+static void yy_load_buffer_state  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
@@ -1382,35 +1560,35 @@ static void cmExpr_yy_load_buffer_state  (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @return the allocated buffer state.
  */
-    YY_BUFFER_STATE cmExpr_yy_create_buffer  (FILE * file, int  size , yyscan_t yyscanner)
+    YY_BUFFER_STATE yy_create_buffer  (FILE * file, int  size , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 
-	b = (YY_BUFFER_STATE) cmExpr_yyalloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+	b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) , yyscanner );
 	if ( ! b )
-		YY_FATAL_ERROR( "out of dynamic memory in cmExpr_yy_create_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 
-	b->yy_buf_size = (yy_size_t)size;
+	b->yy_buf_size = size;
 
 	/* yy_ch_buf has to be 2 characters longer than the size given because
 	 * we need to put in 2 end-of-buffer characters.
 	 */
-	b->yy_ch_buf = (char *) cmExpr_yyalloc(b->yy_buf_size + 2 ,yyscanner );
+	b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2) , yyscanner );
 	if ( ! b->yy_ch_buf )
-		YY_FATAL_ERROR( "out of dynamic memory in cmExpr_yy_create_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 
 	b->yy_is_our_buffer = 1;
 
-	cmExpr_yy_init_buffer(b,file ,yyscanner);
+	yy_init_buffer( b, file , yyscanner);
 
 	return b;
 }
 
 /** Destroy the buffer.
- * @param b a buffer created with cmExpr_yy_create_buffer()
+ * @param b a buffer created with yy_create_buffer()
  * @param yyscanner The scanner object.
  */
-    void cmExpr_yy_delete_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+    void yy_delete_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -1421,28 +1599,28 @@ static void cmExpr_yy_load_buffer_state  (yyscan_t yyscanner)
 		YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
 
 	if ( b->yy_is_our_buffer )
-		cmExpr_yyfree((void *) b->yy_ch_buf ,yyscanner );
+		yyfree( (void *) b->yy_ch_buf , yyscanner );
 
-	cmExpr_yyfree((void *) b ,yyscanner );
+	yyfree( (void *) b , yyscanner );
 }
 
 /* Initializes or reinitializes a buffer.
  * This function is sometimes called more than once on the same buffer,
- * such as during a cmExpr_yyrestart() or at EOF.
+ * such as during a yyrestart() or at EOF.
  */
-    static void cmExpr_yy_init_buffer  (YY_BUFFER_STATE  b, FILE * file , yyscan_t yyscanner)
+    static void yy_init_buffer  (YY_BUFFER_STATE  b, FILE * file , yyscan_t yyscanner)
 
 {
 	int oerrno = errno;
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
-	cmExpr_yy_flush_buffer(b ,yyscanner);
+	yy_flush_buffer( b , yyscanner);
 
 	b->yy_input_file = file;
 	b->yy_fill_buffer = 1;
 
-    /* If b is the current buffer, then cmExpr_yy_init_buffer was _probably_
-     * called from cmExpr_yyrestart() or through yy_get_next_buffer.
+    /* If b is the current buffer, then yy_init_buffer was _probably_
+     * called from yyrestart() or through yy_get_next_buffer.
      * In that case, we don't want to reset the lineno or column.
      */
     if (b != YY_CURRENT_BUFFER){
@@ -1459,7 +1637,7 @@ static void cmExpr_yy_load_buffer_state  (yyscan_t yyscanner)
  * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
  * @param yyscanner The scanner object.
  */
-    void cmExpr_yy_flush_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+    void yy_flush_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if ( ! b )
@@ -1480,7 +1658,7 @@ static void cmExpr_yy_load_buffer_state  (yyscan_t yyscanner)
 	b->yy_buffer_status = YY_BUFFER_NEW;
 
 	if ( b == YY_CURRENT_BUFFER )
-		cmExpr_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 }
 
 /** Pushes the new state onto the stack. The new state becomes
@@ -1489,15 +1667,15 @@ static void cmExpr_yy_load_buffer_state  (yyscan_t yyscanner)
  *  @param new_buffer The new state.
  *  @param yyscanner The scanner object.
  */
-void cmExpr_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner)
+void yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if (new_buffer == NULL)
 		return;
 
-	cmExpr_yyensure_buffer_stack(yyscanner);
+	yyensure_buffer_stack(yyscanner);
 
-	/* This block is copied from cmExpr_yy_switch_to_buffer. */
+	/* This block is copied from yy_switch_to_buffer. */
 	if ( YY_CURRENT_BUFFER )
 		{
 		/* Flush out information for old buffer. */
@@ -1511,8 +1689,8 @@ void cmExpr_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner
 		yyg->yy_buffer_stack_top++;
 	YY_CURRENT_BUFFER_LVALUE = new_buffer;
 
-	/* copied from cmExpr_yy_switch_to_buffer. */
-	cmExpr_yy_load_buffer_state(yyscanner );
+	/* copied from yy_switch_to_buffer. */
+	yy_load_buffer_state( yyscanner );
 	yyg->yy_did_buffer_switch_on_eof = 1;
 }
 
@@ -1520,19 +1698,19 @@ void cmExpr_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner
  *  The next element becomes the new top.
  *  @param yyscanner The scanner object.
  */
-void cmExpr_yypop_buffer_state (yyscan_t yyscanner)
+void yypop_buffer_state (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if (!YY_CURRENT_BUFFER)
 		return;
 
-	cmExpr_yy_delete_buffer(YY_CURRENT_BUFFER ,yyscanner);
+	yy_delete_buffer(YY_CURRENT_BUFFER , yyscanner);
 	YY_CURRENT_BUFFER_LVALUE = NULL;
 	if (yyg->yy_buffer_stack_top > 0)
 		--yyg->yy_buffer_stack_top;
 
 	if (YY_CURRENT_BUFFER) {
-		cmExpr_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 		yyg->yy_did_buffer_switch_on_eof = 1;
 	}
 }
@@ -1540,9 +1718,9 @@ void cmExpr_yypop_buffer_state (yyscan_t yyscanner)
 /* Allocates the stack if it does not exist.
  *  Guarantees space for at least one push.
  */
-static void cmExpr_yyensure_buffer_stack (yyscan_t yyscanner)
+static void yyensure_buffer_stack (yyscan_t yyscanner)
 {
-	int num_to_alloc;
+	yy_size_t num_to_alloc;
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	if (!yyg->yy_buffer_stack) {
@@ -1552,11 +1730,11 @@ static void cmExpr_yyensure_buffer_stack (yyscan_t yyscanner)
 		 * immediate realloc on the next call.
          */
       num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */
-		yyg->yy_buffer_stack = (struct yy_buffer_state**)cmExpr_yyalloc
+		yyg->yy_buffer_stack = (struct yy_buffer_state**)yyalloc
 								(num_to_alloc * sizeof(struct yy_buffer_state*)
 								, yyscanner);
 		if ( ! yyg->yy_buffer_stack )
-			YY_FATAL_ERROR( "out of dynamic memory in cmExpr_yyensure_buffer_stack()" );
+			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
 
 		memset(yyg->yy_buffer_stack, 0, num_to_alloc * sizeof(struct yy_buffer_state*));
 
@@ -1571,12 +1749,12 @@ static void cmExpr_yyensure_buffer_stack (yyscan_t yyscanner)
 		yy_size_t grow_size = 8 /* arbitrary grow size */;
 
 		num_to_alloc = yyg->yy_buffer_stack_max + grow_size;
-		yyg->yy_buffer_stack = (struct yy_buffer_state**)cmExpr_yyrealloc
+		yyg->yy_buffer_stack = (struct yy_buffer_state**)yyrealloc
 								(yyg->yy_buffer_stack,
 								num_to_alloc * sizeof(struct yy_buffer_state*)
 								, yyscanner);
 		if ( ! yyg->yy_buffer_stack )
-			YY_FATAL_ERROR( "out of dynamic memory in cmExpr_yyensure_buffer_stack()" );
+			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
 
 		/* zero only the new slots.*/
 		memset(yyg->yy_buffer_stack + yyg->yy_buffer_stack_max, 0, grow_size * sizeof(struct yy_buffer_state*));
@@ -1590,7 +1768,7 @@ static void cmExpr_yyensure_buffer_stack (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  */
-YY_BUFFER_STATE cmExpr_yy_scan_buffer  (char * base, yy_size_t  size , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_buffer  (char * base, yy_size_t  size , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 
@@ -1600,11 +1778,11 @@ YY_BUFFER_STATE cmExpr_yy_scan_buffer  (char * base, yy_size_t  size , yyscan_t
 		/* They forgot to leave room for the EOB's. */
 		return NULL;
 
-	b = (YY_BUFFER_STATE) cmExpr_yyalloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+	b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) , yyscanner );
 	if ( ! b )
-		YY_FATAL_ERROR( "out of dynamic memory in cmExpr_yy_scan_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
 
-	b->yy_buf_size = size - 2;	/* "- 2" to take care of EOB's */
+	b->yy_buf_size = (int) (size - 2);	/* "- 2" to take care of EOB's */
 	b->yy_buf_pos = b->yy_ch_buf = base;
 	b->yy_is_our_buffer = 0;
 	b->yy_input_file = NULL;
@@ -1614,53 +1792,53 @@ YY_BUFFER_STATE cmExpr_yy_scan_buffer  (char * base, yy_size_t  size , yyscan_t
 	b->yy_fill_buffer = 0;
 	b->yy_buffer_status = YY_BUFFER_NEW;
 
-	cmExpr_yy_switch_to_buffer(b ,yyscanner );
+	yy_switch_to_buffer( b , yyscanner );
 
 	return b;
 }
 
-/** Setup the input buffer state to scan a string. The next call to cmExpr_yylex() will
+/** Setup the input buffer state to scan a string. The next call to yylex() will
  * scan from a @e copy of @a str.
  * @param yystr a NUL-terminated string to scan
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  * @note If you want to scan bytes that may contain NUL values, then use
- *       cmExpr_yy_scan_bytes() instead.
+ *       yy_scan_bytes() instead.
  */
-YY_BUFFER_STATE cmExpr_yy_scan_string (yyconst char * yystr , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_string (const char * yystr , yyscan_t yyscanner)
 {
 
-	return cmExpr_yy_scan_bytes(yystr,(int) strlen(yystr) ,yyscanner);
+	return yy_scan_bytes( yystr, (int) strlen(yystr) , yyscanner);
 }
 
-/** Setup the input buffer state to scan the given bytes. The next call to cmExpr_yylex() will
+/** Setup the input buffer state to scan the given bytes. The next call to yylex() will
  * scan from a @e copy of @a bytes.
  * @param yybytes the byte buffer to scan
  * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes.
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  */
-YY_BUFFER_STATE cmExpr_yy_scan_bytes  (yyconst char * yybytes, int  _yybytes_len , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_bytes  (const char * yybytes, int  _yybytes_len , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 	char *buf;
 	yy_size_t n;
-	yy_size_t i;
+	int i;
 
 	/* Get memory for full buffer, including space for trailing EOB's. */
-	n = (yy_size_t) _yybytes_len + 2;
-	buf = (char *) cmExpr_yyalloc(n ,yyscanner );
+	n = (yy_size_t) (_yybytes_len + 2);
+	buf = (char *) yyalloc( n , yyscanner );
 	if ( ! buf )
-		YY_FATAL_ERROR( "out of dynamic memory in cmExpr_yy_scan_bytes()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
 
-	for ( i = 0; i < (size_t)_yybytes_len; ++i )
+	for ( i = 0; i < _yybytes_len; ++i )
 		buf[i] = yybytes[i];
 
 	buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR;
 
-	b = cmExpr_yy_scan_buffer(buf,n ,yyscanner);
+	b = yy_scan_buffer( buf, n , yyscanner);
 	if ( ! b )
-		YY_FATAL_ERROR( "bad buffer in cmExpr_yy_scan_bytes()" );
+		YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
 
 	/* It's okay to grow etc. this buffer, and we should throw it
 	 * away when we're done.
@@ -1674,11 +1852,11 @@ YY_BUFFER_STATE cmExpr_yy_scan_bytes  (yyconst char * yybytes, int  _yybytes_len
 #define YY_EXIT_FAILURE 2
 #endif
 
-static void yynoreturn yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
+static void yynoreturn yy_fatal_error (const char* msg , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
-	(void) fprintf( stderr, "%s\n", msg );
+	fprintf( stderr, "%s\n", msg );
 	exit( YY_EXIT_FAILURE );
 }
 
@@ -1704,7 +1882,7 @@ static void yynoreturn yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
 /** Get the user-defined data for this scanner.
  * @param yyscanner The scanner object.
  */
-YY_EXTRA_TYPE cmExpr_yyget_extra  (yyscan_t yyscanner)
+YY_EXTRA_TYPE yyget_extra  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyextra;
@@ -1713,7 +1891,7 @@ YY_EXTRA_TYPE cmExpr_yyget_extra  (yyscan_t yyscanner)
 /** Get the current line number.
  * @param yyscanner The scanner object.
  */
-int cmExpr_yyget_lineno  (yyscan_t yyscanner)
+int yyget_lineno  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -1726,7 +1904,7 @@ int cmExpr_yyget_lineno  (yyscan_t yyscanner)
 /** Get the current column number.
  * @param yyscanner The scanner object.
  */
-int cmExpr_yyget_column  (yyscan_t yyscanner)
+int yyget_column  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -1739,7 +1917,7 @@ int cmExpr_yyget_column  (yyscan_t yyscanner)
 /** Get the input stream.
  * @param yyscanner The scanner object.
  */
-FILE *cmExpr_yyget_in  (yyscan_t yyscanner)
+FILE *yyget_in  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyin;
@@ -1748,7 +1926,7 @@ FILE *cmExpr_yyget_in  (yyscan_t yyscanner)
 /** Get the output stream.
  * @param yyscanner The scanner object.
  */
-FILE *cmExpr_yyget_out  (yyscan_t yyscanner)
+FILE *yyget_out  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyout;
@@ -1757,7 +1935,7 @@ FILE *cmExpr_yyget_out  (yyscan_t yyscanner)
 /** Get the length of the current token.
  * @param yyscanner The scanner object.
  */
-int cmExpr_yyget_leng  (yyscan_t yyscanner)
+int yyget_leng  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyleng;
@@ -1767,7 +1945,7 @@ int cmExpr_yyget_leng  (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  */
 
-char *cmExpr_yyget_text  (yyscan_t yyscanner)
+char *yyget_text  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yytext;
@@ -1777,7 +1955,7 @@ char *cmExpr_yyget_text  (yyscan_t yyscanner)
  * @param user_defined The data to be associated with this scanner.
  * @param yyscanner The scanner object.
  */
-void cmExpr_yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
+void yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyextra = user_defined ;
@@ -1787,13 +1965,13 @@ void cmExpr_yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
  * @param _line_number line number
  * @param yyscanner The scanner object.
  */
-void cmExpr_yyset_lineno (int  _line_number , yyscan_t yyscanner)
+void yyset_lineno (int  _line_number , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
         /* lineno is only valid if an input buffer exists. */
         if (! YY_CURRENT_BUFFER )
-           YY_FATAL_ERROR( "cmExpr_yyset_lineno called with no buffer" );
+           YY_FATAL_ERROR( "yyset_lineno called with no buffer" );
 
     yylineno = _line_number;
 }
@@ -1802,13 +1980,13 @@ void cmExpr_yyset_lineno (int  _line_number , yyscan_t yyscanner)
  * @param _column_no column number
  * @param yyscanner The scanner object.
  */
-void cmExpr_yyset_column (int  _column_no , yyscan_t yyscanner)
+void yyset_column (int  _column_no , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
         /* column is only valid if an input buffer exists. */
         if (! YY_CURRENT_BUFFER )
-           YY_FATAL_ERROR( "cmExpr_yyset_column called with no buffer" );
+           YY_FATAL_ERROR( "yyset_column called with no buffer" );
 
     yycolumn = _column_no;
 }
@@ -1817,27 +1995,27 @@ void cmExpr_yyset_column (int  _column_no , yyscan_t yyscanner)
  * input buffer.
  * @param _in_str A readable stream.
  * @param yyscanner The scanner object.
- * @see cmExpr_yy_switch_to_buffer
+ * @see yy_switch_to_buffer
  */
-void cmExpr_yyset_in (FILE *  _in_str , yyscan_t yyscanner)
+void yyset_in (FILE *  _in_str , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyin = _in_str ;
 }
 
-void cmExpr_yyset_out (FILE *  _out_str , yyscan_t yyscanner)
+void yyset_out (FILE *  _out_str , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyout = _out_str ;
 }
 
-int cmExpr_yyget_debug  (yyscan_t yyscanner)
+int yyget_debug  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yy_flex_debug;
 }
 
-void cmExpr_yyset_debug (int  _bdebug , yyscan_t yyscanner)
+void yyset_debug (int  _bdebug , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yy_flex_debug = _bdebug ;
@@ -1847,20 +2025,18 @@ void cmExpr_yyset_debug (int  _bdebug , yyscan_t yyscanner)
 
 /* User-visible API */
 
-/* cmExpr_yylex_init is special because it creates the scanner itself, so it is
+/* yylex_init is special because it creates the scanner itself, so it is
  * the ONLY reentrant function that doesn't take the scanner as the last argument.
  * That's why we explicitly handle the declaration, instead of using our macros.
  */
-
-int cmExpr_yylex_init(yyscan_t* ptr_yy_globals)
-
+int yylex_init(yyscan_t* ptr_yy_globals)
 {
     if (ptr_yy_globals == NULL){
         errno = EINVAL;
         return 1;
     }
 
-    *ptr_yy_globals = (yyscan_t) cmExpr_yyalloc ( sizeof( struct yyguts_t ), NULL );
+    *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), NULL );
 
     if (*ptr_yy_globals == NULL){
         errno = ENOMEM;
@@ -1873,27 +2049,25 @@ int cmExpr_yylex_init(yyscan_t* ptr_yy_globals)
     return yy_init_globals ( *ptr_yy_globals );
 }
 
-/* cmExpr_yylex_init_extra has the same functionality as cmExpr_yylex_init, but follows the
+/* yylex_init_extra has the same functionality as yylex_init, but follows the
  * convention of taking the scanner as the last argument. Note however, that
  * this is a *pointer* to a scanner, as it will be allocated by this call (and
  * is the reason, too, why this function also must handle its own declaration).
- * The user defined value in the first argument will be available to cmExpr_yyalloc in
+ * The user defined value in the first argument will be available to yyalloc in
  * the yyextra field.
  */
-
-int cmExpr_yylex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_yy_globals )
-
+int yylex_init_extra( YY_EXTRA_TYPE yy_user_defined, yyscan_t* ptr_yy_globals )
 {
     struct yyguts_t dummy_yyguts;
 
-    cmExpr_yyset_extra (yy_user_defined, &dummy_yyguts);
+    yyset_extra (yy_user_defined, &dummy_yyguts);
 
     if (ptr_yy_globals == NULL){
         errno = EINVAL;
         return 1;
     }
 
-    *ptr_yy_globals = (yyscan_t) cmExpr_yyalloc ( sizeof( struct yyguts_t ), &dummy_yyguts );
+    *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), &dummy_yyguts );
 
     if (*ptr_yy_globals == NULL){
         errno = ENOMEM;
@@ -1904,7 +2078,7 @@ int cmExpr_yylex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_yy_globa
     yy_init_globals. Leave at 0x00 for releases. */
     memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t));
 
-    cmExpr_yyset_extra (yy_user_defined, *ptr_yy_globals);
+    yyset_extra (yy_user_defined, *ptr_yy_globals);
 
     return yy_init_globals ( *ptr_yy_globals );
 }
@@ -1913,7 +2087,7 @@ static int yy_init_globals (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     /* Initialization is the same as for the non-reentrant scanner.
-     * This function is called from cmExpr_yylex_destroy(), so don't allocate here.
+     * This function is called from yylex_destroy(), so don't allocate here.
      */
 
     yyg->yy_buffer_stack = NULL;
@@ -1937,37 +2111,37 @@ static int yy_init_globals (yyscan_t yyscanner)
 #endif
 
     /* For future reference: Set errno on error, since we are called by
-     * cmExpr_yylex_init()
+     * yylex_init()
      */
     return 0;
 }
 
-/* cmExpr_yylex_destroy is for both reentrant and non-reentrant scanners. */
-int cmExpr_yylex_destroy  (yyscan_t yyscanner)
+/* yylex_destroy is for both reentrant and non-reentrant scanners. */
+int yylex_destroy  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
     /* Pop the buffer stack, destroying each element. */
 	while(YY_CURRENT_BUFFER){
-		cmExpr_yy_delete_buffer(YY_CURRENT_BUFFER ,yyscanner );
+		yy_delete_buffer( YY_CURRENT_BUFFER , yyscanner );
 		YY_CURRENT_BUFFER_LVALUE = NULL;
-		cmExpr_yypop_buffer_state(yyscanner);
+		yypop_buffer_state(yyscanner);
 	}
 
 	/* Destroy the stack itself. */
-	cmExpr_yyfree(yyg->yy_buffer_stack ,yyscanner);
+	yyfree(yyg->yy_buffer_stack , yyscanner);
 	yyg->yy_buffer_stack = NULL;
 
     /* Destroy the start condition stack. */
-        cmExpr_yyfree(yyg->yy_start_stack ,yyscanner );
+        yyfree( yyg->yy_start_stack , yyscanner );
         yyg->yy_start_stack = NULL;
 
     /* Reset the globals. This is important in a non-reentrant scanner so the next time
-     * cmExpr_yylex() is called, initialization will occur. */
+     * yylex() is called, initialization will occur. */
     yy_init_globals( yyscanner);
 
     /* Destroy the main struct (reentrant only). */
-    cmExpr_yyfree ( yyscanner , yyscanner );
+    yyfree ( yyscanner , yyscanner );
     yyscanner = NULL;
     return 0;
 }
@@ -1977,7 +2151,7 @@ int cmExpr_yylex_destroy  (yyscan_t yyscanner)
  */
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char* s1, yyconst char * s2, int n , yyscan_t yyscanner)
+static void yy_flex_strncpy (char* s1, const char * s2, int n , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
@@ -1989,7 +2163,7 @@ static void yy_flex_strncpy (char* s1, yyconst char * s2, int n , yyscan_t yysca
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * s , yyscan_t yyscanner)
+static int yy_flex_strlen (const char * s , yyscan_t yyscanner)
 {
 	int n;
 	for ( n = 0; s[n]; ++n )
@@ -1999,14 +2173,14 @@ static int yy_flex_strlen (yyconst char * s , yyscan_t yyscanner)
 }
 #endif
 
-void *cmExpr_yyalloc (yy_size_t  size , yyscan_t yyscanner)
+void *yyalloc (yy_size_t  size , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
 	return malloc(size);
 }
 
-void *cmExpr_yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
+void *yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
@@ -2021,13 +2195,11 @@ void *cmExpr_yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
 	return realloc(ptr, size);
 }
 
-void cmExpr_yyfree (void * ptr , yyscan_t yyscanner)
+void yyfree (void * ptr , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
-	free( (char *) ptr );	/* see cmExpr_yyrealloc() for (char *) cast */
+	free( (char *) ptr );	/* see yyrealloc() for (char *) cast */
 }
 
 #define YYTABLES_NAME "yytables"
-
-#line 57 "cmExprLexer.in.l"
diff --git a/Source/LexerParser/cmExprLexer.h b/Source/LexerParser/cmExprLexer.h
index 835a7a36a..b55ee92e5 100644
--- a/Source/LexerParser/cmExprLexer.h
+++ b/Source/LexerParser/cmExprLexer.h
@@ -2,10 +2,6 @@
 #define cmExpr_yyHEADER_H 1
 #define cmExpr_yyIN_HEADER 1
 
-#line 6 "cmExprLexer.h"
-
-#line 8 "cmExprLexer.h"
-
 #define FLEXINT_H 1
 #define  YY_INT_ALIGNED short int
 
@@ -14,11 +10,221 @@
 #define FLEX_SCANNER
 #define YY_FLEX_MAJOR_VERSION 2
 #define YY_FLEX_MINOR_VERSION 6
-#define YY_FLEX_SUBMINOR_VERSION 1
+#define YY_FLEX_SUBMINOR_VERSION 4
 #if YY_FLEX_SUBMINOR_VERSION > 0
 #define FLEX_BETA
 #endif
 
+#ifdef yy_create_buffer
+#define cmExpr_yy_create_buffer_ALREADY_DEFINED
+#else
+#define yy_create_buffer cmExpr_yy_create_buffer
+#endif
+
+#ifdef yy_delete_buffer
+#define cmExpr_yy_delete_buffer_ALREADY_DEFINED
+#else
+#define yy_delete_buffer cmExpr_yy_delete_buffer
+#endif
+
+#ifdef yy_scan_buffer
+#define cmExpr_yy_scan_buffer_ALREADY_DEFINED
+#else
+#define yy_scan_buffer cmExpr_yy_scan_buffer
+#endif
+
+#ifdef yy_scan_string
+#define cmExpr_yy_scan_string_ALREADY_DEFINED
+#else
+#define yy_scan_string cmExpr_yy_scan_string
+#endif
+
+#ifdef yy_scan_bytes
+#define cmExpr_yy_scan_bytes_ALREADY_DEFINED
+#else
+#define yy_scan_bytes cmExpr_yy_scan_bytes
+#endif
+
+#ifdef yy_init_buffer
+#define cmExpr_yy_init_buffer_ALREADY_DEFINED
+#else
+#define yy_init_buffer cmExpr_yy_init_buffer
+#endif
+
+#ifdef yy_flush_buffer
+#define cmExpr_yy_flush_buffer_ALREADY_DEFINED
+#else
+#define yy_flush_buffer cmExpr_yy_flush_buffer
+#endif
+
+#ifdef yy_load_buffer_state
+#define cmExpr_yy_load_buffer_state_ALREADY_DEFINED
+#else
+#define yy_load_buffer_state cmExpr_yy_load_buffer_state
+#endif
+
+#ifdef yy_switch_to_buffer
+#define cmExpr_yy_switch_to_buffer_ALREADY_DEFINED
+#else
+#define yy_switch_to_buffer cmExpr_yy_switch_to_buffer
+#endif
+
+#ifdef yypush_buffer_state
+#define cmExpr_yypush_buffer_state_ALREADY_DEFINED
+#else
+#define yypush_buffer_state cmExpr_yypush_buffer_state
+#endif
+
+#ifdef yypop_buffer_state
+#define cmExpr_yypop_buffer_state_ALREADY_DEFINED
+#else
+#define yypop_buffer_state cmExpr_yypop_buffer_state
+#endif
+
+#ifdef yyensure_buffer_stack
+#define cmExpr_yyensure_buffer_stack_ALREADY_DEFINED
+#else
+#define yyensure_buffer_stack cmExpr_yyensure_buffer_stack
+#endif
+
+#ifdef yylex
+#define cmExpr_yylex_ALREADY_DEFINED
+#else
+#define yylex cmExpr_yylex
+#endif
+
+#ifdef yyrestart
+#define cmExpr_yyrestart_ALREADY_DEFINED
+#else
+#define yyrestart cmExpr_yyrestart
+#endif
+
+#ifdef yylex_init
+#define cmExpr_yylex_init_ALREADY_DEFINED
+#else
+#define yylex_init cmExpr_yylex_init
+#endif
+
+#ifdef yylex_init_extra
+#define cmExpr_yylex_init_extra_ALREADY_DEFINED
+#else
+#define yylex_init_extra cmExpr_yylex_init_extra
+#endif
+
+#ifdef yylex_destroy
+#define cmExpr_yylex_destroy_ALREADY_DEFINED
+#else
+#define yylex_destroy cmExpr_yylex_destroy
+#endif
+
+#ifdef yyget_debug
+#define cmExpr_yyget_debug_ALREADY_DEFINED
+#else
+#define yyget_debug cmExpr_yyget_debug
+#endif
+
+#ifdef yyset_debug
+#define cmExpr_yyset_debug_ALREADY_DEFINED
+#else
+#define yyset_debug cmExpr_yyset_debug
+#endif
+
+#ifdef yyget_extra
+#define cmExpr_yyget_extra_ALREADY_DEFINED
+#else
+#define yyget_extra cmExpr_yyget_extra
+#endif
+
+#ifdef yyset_extra
+#define cmExpr_yyset_extra_ALREADY_DEFINED
+#else
+#define yyset_extra cmExpr_yyset_extra
+#endif
+
+#ifdef yyget_in
+#define cmExpr_yyget_in_ALREADY_DEFINED
+#else
+#define yyget_in cmExpr_yyget_in
+#endif
+
+#ifdef yyset_in
+#define cmExpr_yyset_in_ALREADY_DEFINED
+#else
+#define yyset_in cmExpr_yyset_in
+#endif
+
+#ifdef yyget_out
+#define cmExpr_yyget_out_ALREADY_DEFINED
+#else
+#define yyget_out cmExpr_yyget_out
+#endif
+
+#ifdef yyset_out
+#define cmExpr_yyset_out_ALREADY_DEFINED
+#else
+#define yyset_out cmExpr_yyset_out
+#endif
+
+#ifdef yyget_leng
+#define cmExpr_yyget_leng_ALREADY_DEFINED
+#else
+#define yyget_leng cmExpr_yyget_leng
+#endif
+
+#ifdef yyget_text
+#define cmExpr_yyget_text_ALREADY_DEFINED
+#else
+#define yyget_text cmExpr_yyget_text
+#endif
+
+#ifdef yyget_lineno
+#define cmExpr_yyget_lineno_ALREADY_DEFINED
+#else
+#define yyget_lineno cmExpr_yyget_lineno
+#endif
+
+#ifdef yyset_lineno
+#define cmExpr_yyset_lineno_ALREADY_DEFINED
+#else
+#define yyset_lineno cmExpr_yyset_lineno
+#endif
+
+#ifdef yyget_column
+#define cmExpr_yyget_column_ALREADY_DEFINED
+#else
+#define yyget_column cmExpr_yyget_column
+#endif
+
+#ifdef yyset_column
+#define cmExpr_yyset_column_ALREADY_DEFINED
+#else
+#define yyset_column cmExpr_yyset_column
+#endif
+
+#ifdef yywrap
+#define cmExpr_yywrap_ALREADY_DEFINED
+#else
+#define yywrap cmExpr_yywrap
+#endif
+
+#ifdef yyalloc
+#define cmExpr_yyalloc_ALREADY_DEFINED
+#else
+#define yyalloc cmExpr_yyalloc
+#endif
+
+#ifdef yyrealloc
+#define cmExpr_yyrealloc_ALREADY_DEFINED
+#else
+#define yyrealloc cmExpr_yyrealloc
+#endif
+
+#ifdef yyfree
+#define cmExpr_yyfree_ALREADY_DEFINED
+#else
+#define yyfree cmExpr_yyfree
+#endif
+
 /* First, we deal with  platform-specific or compiler-specific issues. */
 
 /* begin standard C headers. */
@@ -89,10 +295,16 @@ typedef unsigned int flex_uint32_t;
 #define UINT32_MAX             (4294967295U)
 #endif
 
+#ifndef SIZE_MAX
+#define SIZE_MAX               (~(size_t)0)
+#endif
+
 #endif /* ! C99 */
 
 #endif /* ! FLEXINT_H */
 
+/* begin standard C++ headers. */
+
 /* TODO: this is always defined, so inline it */
 #define yyconst const
 
@@ -193,21 +405,21 @@ struct yy_buffer_state
 	};
 #endif /* !YY_STRUCT_YY_BUFFER_STATE */
 
-void cmExpr_yyrestart (FILE *input_file ,yyscan_t yyscanner );
-void cmExpr_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmExpr_yy_create_buffer (FILE *file,int size ,yyscan_t yyscanner );
-void cmExpr_yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmExpr_yy_flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmExpr_yypush_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-void cmExpr_yypop_buffer_state (yyscan_t yyscanner );
+void yyrestart ( FILE *input_file , yyscan_t yyscanner );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size , yyscan_t yyscanner );
+void yy_delete_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yy_flush_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+void yypop_buffer_state ( yyscan_t yyscanner );
 
-YY_BUFFER_STATE cmExpr_yy_scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmExpr_yy_scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmExpr_yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len , yyscan_t yyscanner );
 
-void *cmExpr_yyalloc (yy_size_t ,yyscan_t yyscanner );
-void *cmExpr_yyrealloc (void *,yy_size_t ,yyscan_t yyscanner );
-void cmExpr_yyfree (void * ,yyscan_t yyscanner );
+void *yyalloc ( yy_size_t , yyscan_t yyscanner );
+void *yyrealloc ( void *, yy_size_t , yyscan_t yyscanner );
+void yyfree ( void * , yyscan_t yyscanner );
 
 /* Begin user sect3 */
 
@@ -225,42 +437,42 @@ void cmExpr_yyfree (void * ,yyscan_t yyscanner );
 #define YY_EXTRA_TYPE void *
 #endif
 
-int cmExpr_yylex_init (yyscan_t* scanner);
+int yylex_init (yyscan_t* scanner);
 
-int cmExpr_yylex_init_extra (YY_EXTRA_TYPE user_defined,yyscan_t* scanner);
+int yylex_init_extra ( YY_EXTRA_TYPE user_defined, yyscan_t* scanner);
 
 /* Accessor methods to globals.
    These are made visible to non-reentrant scanners for convenience. */
 
-int cmExpr_yylex_destroy (yyscan_t yyscanner );
+int yylex_destroy ( yyscan_t yyscanner );
 
-int cmExpr_yyget_debug (yyscan_t yyscanner );
+int yyget_debug ( yyscan_t yyscanner );
 
-void cmExpr_yyset_debug (int debug_flag ,yyscan_t yyscanner );
+void yyset_debug ( int debug_flag , yyscan_t yyscanner );
 
-YY_EXTRA_TYPE cmExpr_yyget_extra (yyscan_t yyscanner );
+YY_EXTRA_TYPE yyget_extra ( yyscan_t yyscanner );
 
-void cmExpr_yyset_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner );
+void yyset_extra ( YY_EXTRA_TYPE user_defined , yyscan_t yyscanner );
 
-FILE *cmExpr_yyget_in (yyscan_t yyscanner );
+FILE *yyget_in ( yyscan_t yyscanner );
 
-void cmExpr_yyset_in  (FILE * _in_str ,yyscan_t yyscanner );
+void yyset_in  ( FILE * _in_str , yyscan_t yyscanner );
 
-FILE *cmExpr_yyget_out (yyscan_t yyscanner );
+FILE *yyget_out ( yyscan_t yyscanner );
 
-void cmExpr_yyset_out  (FILE * _out_str ,yyscan_t yyscanner );
+void yyset_out  ( FILE * _out_str , yyscan_t yyscanner );
 
-			int cmExpr_yyget_leng (yyscan_t yyscanner );
+			int yyget_leng ( yyscan_t yyscanner );
 
-char *cmExpr_yyget_text (yyscan_t yyscanner );
+char *yyget_text ( yyscan_t yyscanner );
 
-int cmExpr_yyget_lineno (yyscan_t yyscanner );
+int yyget_lineno ( yyscan_t yyscanner );
 
-void cmExpr_yyset_lineno (int _line_number ,yyscan_t yyscanner );
+void yyset_lineno ( int _line_number , yyscan_t yyscanner );
 
-int cmExpr_yyget_column  (yyscan_t yyscanner );
+int yyget_column  ( yyscan_t yyscanner );
 
-void cmExpr_yyset_column (int _column_no ,yyscan_t yyscanner );
+void yyset_column ( int _column_no , yyscan_t yyscanner );
 
 /* Macros after this point can all be overridden by user definitions in
  * section 1.
@@ -268,18 +480,18 @@ void cmExpr_yyset_column (int _column_no ,yyscan_t yyscanner );
 
 #ifndef YY_SKIP_YYWRAP
 #ifdef __cplusplus
-extern "C" int cmExpr_yywrap (yyscan_t yyscanner );
+extern "C" int yywrap ( yyscan_t yyscanner );
 #else
-extern int cmExpr_yywrap (yyscan_t yyscanner );
+extern int yywrap ( yyscan_t yyscanner );
 #endif
 #endif
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char *,yyconst char *,int ,yyscan_t yyscanner);
+static void yy_flex_strncpy ( char *, const char *, int , yyscan_t yyscanner);
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
+static int yy_flex_strlen ( const char * , yyscan_t yyscanner);
 #endif
 
 #ifndef YY_NO_INPUT
@@ -307,9 +519,9 @@ static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
 #ifndef YY_DECL
 #define YY_DECL_IS_OURS 1
 
-extern int cmExpr_yylex (yyscan_t yyscanner);
+extern int yylex (yyscan_t yyscanner);
 
-#define YY_DECL int cmExpr_yylex (yyscan_t yyscanner)
+#define YY_DECL int yylex (yyscan_t yyscanner)
 #endif /* !YY_DECL */
 
 /* yy_get_previous_state - get the state just before the EOB char was reached */
@@ -326,9 +538,150 @@ extern int cmExpr_yylex (yyscan_t yyscanner);
 #undef YY_DECL
 #endif
 
-#line 57 "cmExprLexer.in.l"
-
+#ifndef cmExpr_yy_create_buffer_ALREADY_DEFINED
+#undef yy_create_buffer
+#endif
+#ifndef cmExpr_yy_delete_buffer_ALREADY_DEFINED
+#undef yy_delete_buffer
+#endif
+#ifndef cmExpr_yy_scan_buffer_ALREADY_DEFINED
+#undef yy_scan_buffer
+#endif
+#ifndef cmExpr_yy_scan_string_ALREADY_DEFINED
+#undef yy_scan_string
+#endif
+#ifndef cmExpr_yy_scan_bytes_ALREADY_DEFINED
+#undef yy_scan_bytes
+#endif
+#ifndef cmExpr_yy_init_buffer_ALREADY_DEFINED
+#undef yy_init_buffer
+#endif
+#ifndef cmExpr_yy_flush_buffer_ALREADY_DEFINED
+#undef yy_flush_buffer
+#endif
+#ifndef cmExpr_yy_load_buffer_state_ALREADY_DEFINED
+#undef yy_load_buffer_state
+#endif
+#ifndef cmExpr_yy_switch_to_buffer_ALREADY_DEFINED
+#undef yy_switch_to_buffer
+#endif
+#ifndef cmExpr_yypush_buffer_state_ALREADY_DEFINED
+#undef yypush_buffer_state
+#endif
+#ifndef cmExpr_yypop_buffer_state_ALREADY_DEFINED
+#undef yypop_buffer_state
+#endif
+#ifndef cmExpr_yyensure_buffer_stack_ALREADY_DEFINED
+#undef yyensure_buffer_stack
+#endif
+#ifndef cmExpr_yylex_ALREADY_DEFINED
+#undef yylex
+#endif
+#ifndef cmExpr_yyrestart_ALREADY_DEFINED
+#undef yyrestart
+#endif
+#ifndef cmExpr_yylex_init_ALREADY_DEFINED
+#undef yylex_init
+#endif
+#ifndef cmExpr_yylex_init_extra_ALREADY_DEFINED
+#undef yylex_init_extra
+#endif
+#ifndef cmExpr_yylex_destroy_ALREADY_DEFINED
+#undef yylex_destroy
+#endif
+#ifndef cmExpr_yyget_debug_ALREADY_DEFINED
+#undef yyget_debug
+#endif
+#ifndef cmExpr_yyset_debug_ALREADY_DEFINED
+#undef yyset_debug
+#endif
+#ifndef cmExpr_yyget_extra_ALREADY_DEFINED
+#undef yyget_extra
+#endif
+#ifndef cmExpr_yyset_extra_ALREADY_DEFINED
+#undef yyset_extra
+#endif
+#ifndef cmExpr_yyget_in_ALREADY_DEFINED
+#undef yyget_in
+#endif
+#ifndef cmExpr_yyset_in_ALREADY_DEFINED
+#undef yyset_in
+#endif
+#ifndef cmExpr_yyget_out_ALREADY_DEFINED
+#undef yyget_out
+#endif
+#ifndef cmExpr_yyset_out_ALREADY_DEFINED
+#undef yyset_out
+#endif
+#ifndef cmExpr_yyget_leng_ALREADY_DEFINED
+#undef yyget_leng
+#endif
+#ifndef cmExpr_yyget_text_ALREADY_DEFINED
+#undef yyget_text
+#endif
+#ifndef cmExpr_yyget_lineno_ALREADY_DEFINED
+#undef yyget_lineno
+#endif
+#ifndef cmExpr_yyset_lineno_ALREADY_DEFINED
+#undef yyset_lineno
+#endif
+#ifndef cmExpr_yyget_column_ALREADY_DEFINED
+#undef yyget_column
+#endif
+#ifndef cmExpr_yyset_column_ALREADY_DEFINED
+#undef yyset_column
+#endif
+#ifndef cmExpr_yywrap_ALREADY_DEFINED
+#undef yywrap
+#endif
+#ifndef cmExpr_yyget_lval_ALREADY_DEFINED
+#undef yyget_lval
+#endif
+#ifndef cmExpr_yyset_lval_ALREADY_DEFINED
+#undef yyset_lval
+#endif
+#ifndef cmExpr_yyget_lloc_ALREADY_DEFINED
+#undef yyget_lloc
+#endif
+#ifndef cmExpr_yyset_lloc_ALREADY_DEFINED
+#undef yyset_lloc
+#endif
+#ifndef cmExpr_yyalloc_ALREADY_DEFINED
+#undef yyalloc
+#endif
+#ifndef cmExpr_yyrealloc_ALREADY_DEFINED
+#undef yyrealloc
+#endif
+#ifndef cmExpr_yyfree_ALREADY_DEFINED
+#undef yyfree
+#endif
+#ifndef cmExpr_yytext_ALREADY_DEFINED
+#undef yytext
+#endif
+#ifndef cmExpr_yyleng_ALREADY_DEFINED
+#undef yyleng
+#endif
+#ifndef cmExpr_yyin_ALREADY_DEFINED
+#undef yyin
+#endif
+#ifndef cmExpr_yyout_ALREADY_DEFINED
+#undef yyout
+#endif
+#ifndef cmExpr_yy_flex_debug_ALREADY_DEFINED
+#undef yy_flex_debug
+#endif
+#ifndef cmExpr_yylineno_ALREADY_DEFINED
+#undef yylineno
+#endif
+#ifndef cmExpr_yytables_fload_ALREADY_DEFINED
+#undef yytables_fload
+#endif
+#ifndef cmExpr_yytables_destroy_ALREADY_DEFINED
+#undef yytables_destroy
+#endif
+#ifndef cmExpr_yyTABLES_NAME_ALREADY_DEFINED
+#undef yyTABLES_NAME
+#endif
 
-#line 333 "cmExprLexer.h"
 #undef cmExpr_yyIN_HEADER
 #endif /* cmExpr_yyHEADER_H */
diff --git a/Source/LexerParser/cmExprLexer.in.l b/Source/LexerParser/cmExprLexer.in.l
index 25ddba460..e5f177a35 100644
--- a/Source/LexerParser/cmExprLexer.in.l
+++ b/Source/LexerParser/cmExprLexer.in.l
@@ -7,13 +7,12 @@ This file must be translated to C++ and modified to build everywhere.
 
 Run flex >= 2.6 like this:
 
-  flex --nounistd -DFLEXINT_H --prefix=cmExpr_yy --header-file=cmExprLexer.h -ocmExprLexer.cxx cmExprLexer.in.l
+  flex --nounistd -DFLEXINT_H --noline --header-file=cmExprLexer.h -ocmExprLexer.cxx cmExprLexer.in.l
 
 Modify cmExprLexer.cxx:
-  - remove trailing whitespace: sed -i 's/\s*$//' cmExprLexer.h cmExprLexer.cxx
-  - remove blank lines at end of file
-  - #include "cmStandardLexer.h" at the top
-  - add cast in yy_scan_bytes for loop condition of _yybytes_len to size_t
+  - remove trailing whitespace:              sed -i 's/\s*$//' cmExprLexer.h cmExprLexer.cxx
+  - remove blank lines at end of file:       sed -i '${/^$/d;}' cmExprLexer.h cmExprLexer.cxx
+  - #include "cmStandardLexer.h" at the top: sed -i '1i#include "cmStandardLexer.h"' cmExprLexer.cxx
 
 */
 
@@ -32,6 +31,8 @@ Modify cmExprLexer.cxx:
 /*--------------------------------------------------------------------------*/
 %}
 
+%option prefix="cmExpr_yy"
+
 %option reentrant
 %option noyywrap
 %pointer
diff --git a/Source/LexerParser/cmFortranLexer.cxx b/Source/LexerParser/cmFortranLexer.cxx
index 01c09acb7..dec0f5eb3 100644
--- a/Source/LexerParser/cmFortranLexer.cxx
+++ b/Source/LexerParser/cmFortranLexer.cxx
@@ -1,7 +1,4 @@
 #include "cmStandardLexer.h"
-#line 2 "cmFortranLexer.cxx"
-
-#line 4 "cmFortranLexer.cxx"
 
 #define FLEXINT_H 1
 #define  YY_INT_ALIGNED short int
@@ -11,11 +8,221 @@
 #define FLEX_SCANNER
 #define YY_FLEX_MAJOR_VERSION 2
 #define YY_FLEX_MINOR_VERSION 6
-#define YY_FLEX_SUBMINOR_VERSION 1
+#define YY_FLEX_SUBMINOR_VERSION 4
 #if YY_FLEX_SUBMINOR_VERSION > 0
 #define FLEX_BETA
 #endif
 
+#ifdef yy_create_buffer
+#define cmFortran_yy_create_buffer_ALREADY_DEFINED
+#else
+#define yy_create_buffer cmFortran_yy_create_buffer
+#endif
+
+#ifdef yy_delete_buffer
+#define cmFortran_yy_delete_buffer_ALREADY_DEFINED
+#else
+#define yy_delete_buffer cmFortran_yy_delete_buffer
+#endif
+
+#ifdef yy_scan_buffer
+#define cmFortran_yy_scan_buffer_ALREADY_DEFINED
+#else
+#define yy_scan_buffer cmFortran_yy_scan_buffer
+#endif
+
+#ifdef yy_scan_string
+#define cmFortran_yy_scan_string_ALREADY_DEFINED
+#else
+#define yy_scan_string cmFortran_yy_scan_string
+#endif
+
+#ifdef yy_scan_bytes
+#define cmFortran_yy_scan_bytes_ALREADY_DEFINED
+#else
+#define yy_scan_bytes cmFortran_yy_scan_bytes
+#endif
+
+#ifdef yy_init_buffer
+#define cmFortran_yy_init_buffer_ALREADY_DEFINED
+#else
+#define yy_init_buffer cmFortran_yy_init_buffer
+#endif
+
+#ifdef yy_flush_buffer
+#define cmFortran_yy_flush_buffer_ALREADY_DEFINED
+#else
+#define yy_flush_buffer cmFortran_yy_flush_buffer
+#endif
+
+#ifdef yy_load_buffer_state
+#define cmFortran_yy_load_buffer_state_ALREADY_DEFINED
+#else
+#define yy_load_buffer_state cmFortran_yy_load_buffer_state
+#endif
+
+#ifdef yy_switch_to_buffer
+#define cmFortran_yy_switch_to_buffer_ALREADY_DEFINED
+#else
+#define yy_switch_to_buffer cmFortran_yy_switch_to_buffer
+#endif
+
+#ifdef yypush_buffer_state
+#define cmFortran_yypush_buffer_state_ALREADY_DEFINED
+#else
+#define yypush_buffer_state cmFortran_yypush_buffer_state
+#endif
+
+#ifdef yypop_buffer_state
+#define cmFortran_yypop_buffer_state_ALREADY_DEFINED
+#else
+#define yypop_buffer_state cmFortran_yypop_buffer_state
+#endif
+
+#ifdef yyensure_buffer_stack
+#define cmFortran_yyensure_buffer_stack_ALREADY_DEFINED
+#else
+#define yyensure_buffer_stack cmFortran_yyensure_buffer_stack
+#endif
+
+#ifdef yylex
+#define cmFortran_yylex_ALREADY_DEFINED
+#else
+#define yylex cmFortran_yylex
+#endif
+
+#ifdef yyrestart
+#define cmFortran_yyrestart_ALREADY_DEFINED
+#else
+#define yyrestart cmFortran_yyrestart
+#endif
+
+#ifdef yylex_init
+#define cmFortran_yylex_init_ALREADY_DEFINED
+#else
+#define yylex_init cmFortran_yylex_init
+#endif
+
+#ifdef yylex_init_extra
+#define cmFortran_yylex_init_extra_ALREADY_DEFINED
+#else
+#define yylex_init_extra cmFortran_yylex_init_extra
+#endif
+
+#ifdef yylex_destroy
+#define cmFortran_yylex_destroy_ALREADY_DEFINED
+#else
+#define yylex_destroy cmFortran_yylex_destroy
+#endif
+
+#ifdef yyget_debug
+#define cmFortran_yyget_debug_ALREADY_DEFINED
+#else
+#define yyget_debug cmFortran_yyget_debug
+#endif
+
+#ifdef yyset_debug
+#define cmFortran_yyset_debug_ALREADY_DEFINED
+#else
+#define yyset_debug cmFortran_yyset_debug
+#endif
+
+#ifdef yyget_extra
+#define cmFortran_yyget_extra_ALREADY_DEFINED
+#else
+#define yyget_extra cmFortran_yyget_extra
+#endif
+
+#ifdef yyset_extra
+#define cmFortran_yyset_extra_ALREADY_DEFINED
+#else
+#define yyset_extra cmFortran_yyset_extra
+#endif
+
+#ifdef yyget_in
+#define cmFortran_yyget_in_ALREADY_DEFINED
+#else
+#define yyget_in cmFortran_yyget_in
+#endif
+
+#ifdef yyset_in
+#define cmFortran_yyset_in_ALREADY_DEFINED
+#else
+#define yyset_in cmFortran_yyset_in
+#endif
+
+#ifdef yyget_out
+#define cmFortran_yyget_out_ALREADY_DEFINED
+#else
+#define yyget_out cmFortran_yyget_out
+#endif
+
+#ifdef yyset_out
+#define cmFortran_yyset_out_ALREADY_DEFINED
+#else
+#define yyset_out cmFortran_yyset_out
+#endif
+
+#ifdef yyget_leng
+#define cmFortran_yyget_leng_ALREADY_DEFINED
+#else
+#define yyget_leng cmFortran_yyget_leng
+#endif
+
+#ifdef yyget_text
+#define cmFortran_yyget_text_ALREADY_DEFINED
+#else
+#define yyget_text cmFortran_yyget_text
+#endif
+
+#ifdef yyget_lineno
+#define cmFortran_yyget_lineno_ALREADY_DEFINED
+#else
+#define yyget_lineno cmFortran_yyget_lineno
+#endif
+
+#ifdef yyset_lineno
+#define cmFortran_yyset_lineno_ALREADY_DEFINED
+#else
+#define yyset_lineno cmFortran_yyset_lineno
+#endif
+
+#ifdef yyget_column
+#define cmFortran_yyget_column_ALREADY_DEFINED
+#else
+#define yyget_column cmFortran_yyget_column
+#endif
+
+#ifdef yyset_column
+#define cmFortran_yyset_column_ALREADY_DEFINED
+#else
+#define yyset_column cmFortran_yyset_column
+#endif
+
+#ifdef yywrap
+#define cmFortran_yywrap_ALREADY_DEFINED
+#else
+#define yywrap cmFortran_yywrap
+#endif
+
+#ifdef yyalloc
+#define cmFortran_yyalloc_ALREADY_DEFINED
+#else
+#define yyalloc cmFortran_yyalloc
+#endif
+
+#ifdef yyrealloc
+#define cmFortran_yyrealloc_ALREADY_DEFINED
+#else
+#define yyrealloc cmFortran_yyrealloc
+#endif
+
+#ifdef yyfree
+#define cmFortran_yyfree_ALREADY_DEFINED
+#else
+#define yyfree cmFortran_yyfree
+#endif
+
 /* First, we deal with  platform-specific or compiler-specific issues. */
 
 /* begin standard C headers. */
@@ -86,10 +293,16 @@ typedef unsigned int flex_uint32_t;
 #define UINT32_MAX             (4294967295U)
 #endif
 
+#ifndef SIZE_MAX
+#define SIZE_MAX               (~(size_t)0)
+#endif
+
 #endif /* ! C99 */
 
 #endif /* ! FLEXINT_H */
 
+/* begin standard C++ headers. */
+
 /* TODO: this is always defined, so inline it */
 #define yyconst const
 
@@ -102,12 +315,10 @@ typedef unsigned int flex_uint32_t;
 /* Returned upon end-of-file. */
 #define YY_NULL 0
 
-/* Promotes a possibly negative, possibly signed char to an unsigned
- * integer for use as an array index.  If the signed char is negative,
- * we want to instead treat it as an 8-bit unsigned char, hence the
- * double cast.
+/* Promotes a possibly negative, possibly signed char to an
+ *   integer in range [0..255] for use as an array index.
  */
-#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
+#define YY_SC_TO_UI(c) ((YY_CHAR) (c))
 
 /* An opaque pointer. */
 #ifndef YY_TYPEDEF_YY_SCANNER_T
@@ -131,20 +342,16 @@ typedef void* yyscan_t;
  * definition of BEGIN.
  */
 #define BEGIN yyg->yy_start = 1 + 2 *
-
 /* Translate the current start state into a value that can be later handed
  * to BEGIN to return to the state.  The YYSTATE alias is for lex
  * compatibility.
  */
 #define YY_START ((yyg->yy_start - 1) / 2)
 #define YYSTATE YY_START
-
 /* Action number for EOF rule of a given start state. */
 #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
-
 /* Special action meaning "start processing a new file". */
-#define YY_NEW_FILE cmFortran_yyrestart(yyin ,yyscanner )
-
+#define YY_NEW_FILE yyrestart( yyin , yyscanner )
 #define YY_END_OF_BUFFER_CHAR 0
 
 /* Size of default input buffer. */
@@ -194,7 +401,6 @@ typedef size_t yy_size_t;
 		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
 		} \
 	while ( 0 )
-
 #define unput(c) yyunput( c, yyg->yytext_ptr , yyscanner )
 
 #ifndef YY_STRUCT_YY_BUFFER_STATE
@@ -254,7 +460,7 @@ struct yy_buffer_state
 	 * possible backing-up.
 	 *
 	 * When we actually see the EOF, we change the status to "new"
-	 * (via cmFortran_yyrestart()), so that the user can continue scanning by
+	 * (via yyrestart()), so that the user can continue scanning by
 	 * just pointing yyin at a new input file.
 	 */
 #define YY_BUFFER_EOF_PENDING 2
@@ -271,73 +477,67 @@ struct yy_buffer_state
 #define YY_CURRENT_BUFFER ( yyg->yy_buffer_stack \
                           ? yyg->yy_buffer_stack[yyg->yy_buffer_stack_top] \
                           : NULL)
-
 /* Same as previous macro, but useful when we know that the buffer stack is not
  * NULL or when we need an lvalue. For internal use only.
  */
 #define YY_CURRENT_BUFFER_LVALUE yyg->yy_buffer_stack[yyg->yy_buffer_stack_top]
 
-void cmFortran_yyrestart (FILE *input_file ,yyscan_t yyscanner );
-void cmFortran_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmFortran_yy_create_buffer (FILE *file,int size ,yyscan_t yyscanner );
-void cmFortran_yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmFortran_yy_flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmFortran_yypush_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-void cmFortran_yypop_buffer_state (yyscan_t yyscanner );
+void yyrestart ( FILE *input_file , yyscan_t yyscanner );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size , yyscan_t yyscanner );
+void yy_delete_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yy_flush_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+void yypop_buffer_state ( yyscan_t yyscanner );
 
-static void cmFortran_yyensure_buffer_stack (yyscan_t yyscanner );
-static void cmFortran_yy_load_buffer_state (yyscan_t yyscanner );
-static void cmFortran_yy_init_buffer (YY_BUFFER_STATE b,FILE *file ,yyscan_t yyscanner );
+static void yyensure_buffer_stack ( yyscan_t yyscanner );
+static void yy_load_buffer_state ( yyscan_t yyscanner );
+static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file , yyscan_t yyscanner );
+#define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER , yyscanner)
 
-#define YY_FLUSH_BUFFER cmFortran_yy_flush_buffer(YY_CURRENT_BUFFER ,yyscanner)
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len , yyscan_t yyscanner );
 
-YY_BUFFER_STATE cmFortran_yy_scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmFortran_yy_scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmFortran_yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
-
-void *cmFortran_yyalloc (yy_size_t ,yyscan_t yyscanner );
-void *cmFortran_yyrealloc (void *,yy_size_t ,yyscan_t yyscanner );
-void cmFortran_yyfree (void * ,yyscan_t yyscanner );
-
-#define yy_new_buffer cmFortran_yy_create_buffer
+void *yyalloc ( yy_size_t , yyscan_t yyscanner );
+void *yyrealloc ( void *, yy_size_t , yyscan_t yyscanner );
+void yyfree ( void * , yyscan_t yyscanner );
 
+#define yy_new_buffer yy_create_buffer
 #define yy_set_interactive(is_interactive) \
 	{ \
 	if ( ! YY_CURRENT_BUFFER ){ \
-        cmFortran_yyensure_buffer_stack (yyscanner); \
+        yyensure_buffer_stack (yyscanner); \
 		YY_CURRENT_BUFFER_LVALUE =    \
-            cmFortran_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); \
 	} \
 	YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
 	}
-
 #define yy_set_bol(at_bol) \
 	{ \
 	if ( ! YY_CURRENT_BUFFER ){\
-        cmFortran_yyensure_buffer_stack (yyscanner); \
+        yyensure_buffer_stack (yyscanner); \
 		YY_CURRENT_BUFFER_LVALUE =    \
-            cmFortran_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); \
 	} \
 	YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
 	}
-
 #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
 
 /* Begin user sect3 */
 
 #define cmFortran_yywrap(yyscanner) (/*CONSTCOND*/1)
 #define YY_SKIP_YYWRAP
-
-typedef unsigned char YY_CHAR;
+typedef flex_uint8_t YY_CHAR;
 
 typedef int yy_state_type;
 
 #define yytext_ptr yytext_r
 
-static yy_state_type yy_get_previous_state (yyscan_t yyscanner );
-static yy_state_type yy_try_NUL_trans (yy_state_type current_state  ,yyscan_t yyscanner);
-static int yy_get_next_buffer (yyscan_t yyscanner );
-static void yynoreturn yy_fatal_error (yyconst char* msg ,yyscan_t yyscanner );
+static yy_state_type yy_get_previous_state ( yyscan_t yyscanner );
+static yy_state_type yy_try_NUL_trans ( yy_state_type current_state  , yyscan_t yyscanner);
+static int yy_get_next_buffer ( yyscan_t yyscanner );
+static void yynoreturn yy_fatal_error ( const char* msg , yyscan_t yyscanner );
 
 /* Done after the current pattern has been matched and before the
  * corresponding action - sets up yytext.
@@ -348,7 +548,6 @@ static void yynoreturn yy_fatal_error (yyconst char* msg ,yyscan_t yyscanner );
 	yyg->yy_hold_char = *yy_cp; \
 	*yy_cp = '\0'; \
 	yyg->yy_c_buf_p = yy_cp;
-
 #define YY_NUM_RULES 54
 #define YY_END_OF_BUFFER 55
 /* This struct is not used in this scanner,
@@ -358,7 +557,7 @@ struct yy_trans_info
 	flex_int32_t yy_verify;
 	flex_int32_t yy_nxt;
 	};
-static yyconst flex_int16_t yy_accept[210] =
+static const flex_int16_t yy_accept[210] =
     {   0,
         0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
        55,   49,   51,   50,   53,    1,   49,   33,    2,   47,
@@ -368,16 +567,16 @@ static yyconst flex_int16_t yy_accept[210] =
         0,    0,   33,   33,   34,   36,   39,   49,   46,   46,
        46,   46,   46,   46,    0,   52,   46,    0,    0,    0,
        12,    0,    0,    0,    0,    0,    0,   49,    0,   11,
-       46,    0,    0,    5,    0,    0,    0,   29,    0,    0,
+       46,    0,    0,    5,    0,    0,    0,    0,   29,    0,
        33,   33,   33,   33,    0,    0,   40,   46,   46,   46,
 
        46,   45,   12,   12,    0,    0,    0,   23,    0,    0,
         0,    0,    0,    0,    6,    0,    0,    0,    0,    0,
         0,    0,    0,    0,   46,   46,   46,   46,    0,    0,
         0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
-       30,   31,    0,    0,    0,    0,    0,    0,   46,   46,
+        0,   30,   31,    0,    0,    0,    0,    0,   46,   46,
        46,   46,    0,   24,   25,    0,    0,    0,    0,    0,
-        0,    0,    0,    0,   32,   27,    0,    0,   20,    0,
+        0,    0,    0,    0,   20,   32,   27,    0,    0,    0,
        46,   46,   43,   46,    0,   26,   21,    0,    0,    0,
        19,    0,    0,   18,   28,    0,    0,   41,   46,   46,
        17,   22,    0,    7,   38,    7,   15,    0,   46,   46,
@@ -385,7 +584,7 @@ static yyconst flex_int16_t yy_accept[210] =
        14,   16,   42,   44,    0,    0,    0,   13,    0
     } ;
 
-static yyconst YY_CHAR yy_ec[256] =
+static const YY_CHAR yy_ec[256] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
         1,    1,    4,    1,    1,    1,    1,    1,    1,    1,
@@ -394,13 +593,13 @@ static yyconst YY_CHAR yy_ec[256] =
        13,   14,    1,   15,    1,    1,    1,   16,   16,   16,
        16,   16,   16,   16,   16,   16,   16,   17,   18,   19,
        20,   21,   22,    1,   23,   24,   25,   26,   27,   28,
-       29,   29,   30,   29,   29,   31,   32,   33,   34,   29,
-       29,   35,   36,   37,   38,   29,   29,   29,   29,   29,
-        1,   39,    1,    1,   40,    1,   23,   24,   41,   42,
+       24,   24,   29,   24,   24,   30,   31,   32,   33,   24,
+       24,   34,   35,   36,   37,   24,   24,   24,   24,   24,
+        1,   38,    1,    1,   39,    1,   23,   40,   41,   42,
 
-       43,   44,   29,   29,   45,   29,   29,   46,   32,   47,
-       34,   29,   29,   35,   48,   37,   49,   29,   29,   29,
-       29,   29,    1,    1,    1,    1,    1,    1,    1,    1,
+       43,   44,   24,   24,   45,   24,   24,   46,   31,   47,
+       33,   24,   24,   34,   48,   36,   49,   24,   24,   24,
+       24,   24,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
@@ -417,49 +616,49 @@ static yyconst YY_CHAR yy_ec[256] =
         1,    1,    1,    1,    1
     } ;
 
-static yyconst YY_CHAR yy_meta[50] =
+static const YY_CHAR yy_meta[50] =
     {   0,
         1,    2,    2,    3,    4,    3,    3,    1,    1,    3,
         3,    3,    3,    1,    3,    5,    3,    3,    1,    3,
         6,    1,    7,    7,    7,    7,    7,    7,    7,    7,
-        7,    7,    7,    7,    7,    7,    7,    7,    1,    5,
+        7,    7,    7,    7,    7,    7,    7,    1,    5,    7,
         7,    7,    7,    7,    7,    7,    7,    7,    7
     } ;
 
-static yyconst flex_uint16_t yy_base[219] =
+static const flex_int16_t yy_base[219] =
     {   0,
-        0,   48,    0,   49,  513,   56,   52,   57,   62,   68,
-      515,    0,  583,  583,  509,  583,   97,   74,  583,  583,
-      583,  583,  491,  583,  423,  421,    0,   19,   40,  392,
-       36,   47,   86,  146,   88,  186,  413,  235,  275,  583,
-      407,   98,  583,  583,    0,  386,  583,  323,   65,   73,
-       81,   74,  127,  146,  583,  583,  583,  108,    0,   89,
-      120,   92,  362,  116,  161,  583,    0,  167,  371,    0,
-      168,  131,  146,  171,   81,   89,  352,  420,  353,  583,
-        0,  349,  178,  196,  175,  197,  188,  208,  196,  197,
-      256,  262,  324,  330,  337,  143,    0,  151,  220,   56,
-
-      305,    0,  336,  139,  225,  315,  305,  322,  318,  163,
-      320,  268,  266,  369,  583,  340,  347,  350,  350,  351,
-      357,  350,  357,  363,  140,  235,  359,  218,  362,  375,
-      379,  380,  381,  385,  384,  404,  405,  243,  235,  213,
-      583,  583,  405,  407,  410,  171,  410,  409,  419,  418,
-      423,  426,  311,  583,  583,  428,  429,  431,  173,  462,
-      435,  166,  145,  438,  583,  583,  441,  444,  583,  433,
-      448,   89,    0,  438,  450,  583,  583,  452,  457,  487,
-      583,  114,    0,  583,  583,  457,  462,    0,  465,  463,
-      583,  583,  468,  583,  583,  583,  583,  470,  471,  474,
-
-      500,  583,    0,    0,  505,    0,   65,  583,  583,  524,
-      531,  537,  540,  547,  554,  561,  568,  575
+        0,   48,    0,   49,  464,   56,   52,   57,   62,   68,
+      466,    0,  468,  468,  462,  468,   74,   81,  468,  468,
+      468,  468,  447,  468,  442,  440,    0,   41,   42,  428,
+       43,   42,   91,  119,   97,  157,  455,  206,  245,  468,
+      454,  101,  468,  468,    0,  455,  468,  105,  430,  424,
+       62,   68,  119,  141,  468,  468,  468,  111,    0,   59,
+       98,   88,  415,  109,  158,  468,    0,  162,  293,    0,
+      163,  411,  107,  122,  408,  405,  446,  342,  447,  468,
+        0,  444,  169,  173,  420,  421,  132,  404,   90,  404,
+      179,  185,  191,  227,  295,  397,    0,  146,  178,  149,
+
+      412,    0,  208,  206,  398,  171,  399,  170,  399,  391,
+      387,  422,  417,  221,  468,  374,  365,  347,  347,  334,
+      335,  335,  330,  334,  259,  340,  188,  340,  327,  327,
+      327,  324,  325,  325,  320,  322,  319,  355,  354,  325,
+      327,  468,  468,  310,  309,  309,  300,  301,  273,  273,
+      275,  277,  297,  468,  468,  293,  289,  283,  275,  305,
+      261,  238,  237,  214,  468,  468,  468,  196,  197,  189,
+      277,  181,    0,  274,  112,  468,  468,  105,  103,  311,
+      468,  233,    0,  468,  468,   83,   76,    0,  281,  282,
+      468,  468,   52,  468,  468,  468,  468,   23,  287,  298,
+
+      327,  468,    0,    0,  329,    0,   31,  468,  468,  381,
+      388,  394,  397,  404,  411,  418,  425,  432
     } ;
 
-static yyconst flex_int16_t yy_def[219] =
+static const flex_int16_t yy_def[219] =
     {   0,
       209,    1,    1,    1,    1,    1,  210,  210,  210,  210,
       209,  211,  209,  209,  212,  209,  211,  209,  209,  209,
       209,  209,  209,  209,  209,  211,  213,  213,  213,  213,
-      213,  213,  211,  213,  209,  209,  209,  214,  209,  209,
+      213,  213,  211,  213,  209,  211,  209,  214,  209,  209,
       209,  209,  209,  209,  211,  212,  209,  209,  209,  209,
       209,  209,  209,  215,  209,  209,  209,  211,  213,  213,
       213,  213,  213,  213,  209,  209,   34,  209,  209,   69,
@@ -482,152 +681,126 @@ static yyconst flex_int16_t yy_def[219] =
       209,  209,  209,  209,  209,  209,  209,  209
     } ;
 
-static yyconst flex_uint16_t yy_nxt[633] =
+static const flex_int16_t yy_nxt[518] =
     {   0,
        12,   13,   14,   13,   13,   15,   16,   12,   17,   18,
        19,   20,   21,   12,   22,   12,   23,   24,   12,   25,
-       12,   26,   27,   27,   27,   27,   28,   27,   27,   29,
-       27,   30,   27,   27,   27,   31,   27,   32,   33,   34,
+       12,   26,   27,   27,   27,   27,   28,   27,   29,   27,
+       30,   27,   27,   27,   31,   27,   32,   33,   34,   27,
        27,   27,   28,   27,   29,   27,   27,   31,   32,   35,
-       35,   60,   35,   35,   41,   36,   36,   35,   37,   41,
-       35,   42,   43,   36,   41,   60,   42,   43,   44,   38,
-       41,   42,   61,   63,   44,   53,   53,   42,   53,   54,
-       39,   39,   64,   55,   63,  208,   61,   65,   66,   68,
-       65,   85,   68,  127,   64,   69,   39,   39,   48,   83,
-
-       84,   48,   83,   86,  127,   87,   90,   85,   88,   95,
-      110,  189,   95,   89,   97,  195,  195,  100,   86,   87,
-       90,  111,   49,   50,   88,  110,   51,   89,   53,   53,
-       97,   53,   54,  100,   52,  111,   55,   96,   49,   50,
-      104,   51,  102,  104,   98,   52,   45,   92,   53,  183,
-       92,   93,   96,   45,   45,   94,   99,  105,  102,   45,
-       98,   67,   65,   66,   45,   65,   45,   45,   68,  104,
-      182,   68,  104,  105,   69,  124,  106,  149,  107,   83,
-       84,  125,   83,   71,   45,   67,   45,   70,  149,  124,
-       70,  106,  107,   45,   45,  136,  125,  114,  108,   45,
-
-      114,   71,  116,  109,   45,  115,   45,   45,  168,  136,
-      179,   72,   73,  119,  108,   74,   75,  109,  116,  168,
-      122,  179,  123,   76,   45,   45,  117,   72,   73,  119,
-       74,   75,  118,  120,   76,   78,  122,   80,  123,  163,
-      121,  117,   78,   78,  118,  164,  126,  162,   78,  120,
-       78,  152,  129,   78,  121,   78,   78,   92,   53,  164,
-       92,   93,  126,   92,   53,   94,   92,   93,  129,  150,
-      139,   94,  138,   78,   78,   79,   79,   80,   79,   79,
+       35,  208,   35,   35,   41,   36,   36,   35,   37,   41,
+       35,   42,   43,   36,   41,  202,   42,   43,   44,   38,
+       41,   42,   60,   61,   44,   48,   64,   42,   48,   63,
+       39,   39,   53,   53,   97,   53,   54,   60,   61,   64,
+       55,   63,   65,   66,  201,   65,   39,   39,   68,   49,
+
+       97,   68,   83,   84,   69,   83,   48,   87,   88,   48,
+       50,   89,   95,  100,   90,   95,   51,  198,   52,   45,
+       53,   53,   98,   53,   54,  197,   45,   45,   55,  100,
+       49,  121,   45,   99,   67,  102,  122,   45,   98,   45,
+       45,   50,   92,   53,  193,   92,   93,   51,  192,   52,
+       94,  102,  106,  107,  191,   96,   45,   67,   70,   65,
+       66,   70,   65,   68,  104,  108,   68,  104,  109,   69,
+       83,   84,   71,   83,  114,  125,  118,  114,   71,  119,
+       92,   53,  115,   92,   93,  127,   92,   53,   94,   92,
+       93,  125,   92,   53,   94,   92,   93,  127,   72,   73,
+
+       94,   74,   75,  189,  126,   76,   78,  104,   80,  104,
+      104,  133,  104,   78,   78,  130,  134,  151,  131,   78,
+      126,   78,  114,  103,   78,  114,   78,   78,   92,   53,
+      115,   92,   93,  151,  195,  195,   94,  187,  186,  185,
+      184,  183,  182,   78,   78,   79,   79,   80,   79,   79,
        79,   79,   79,   79,   79,   79,   79,   79,   79,   79,
        81,   79,   79,   79,   79,   79,   79,   81,   81,   81,
-
        81,   81,   81,   81,   81,   81,   81,   81,   81,   81,
-       81,   81,   81,   79,   81,   81,   81,   81,   81,   81,
-       81,   81,   81,   81,   48,   92,   53,   48,   92,   93,
-      132,   92,   53,   94,   92,   93,  128,  104,   95,   94,
-      104,   95,  135,  175,  130,  137,  132,  133,   49,   50,
-      131,  103,   51,  113,  134,   80,  112,  175,  135,  130,
-       52,  137,  131,  133,   49,   50,   96,   51,  134,  140,
-      114,   52,   70,  114,  141,   70,  142,  144,  115,  143,
-      146,   96,  145,  147,  140,  101,  103,  148,   47,  151,
-      141,  153,  142,  144,  143,  146,   72,   73,  145,  147,
-
-       74,   75,  154,  148,  151,  155,  153,  157,   76,  156,
-      158,   82,   72,   73,  159,   74,   75,   77,  154,   76,
-       78,  155,   80,  157,  156,   62,  158,   78,   78,  159,
-      160,  161,  165,   78,  166,   78,  167,  169,   78,  170,
-       78,   78,   58,   57,  171,  172,  160,  161,  165,  173,
-      166,  174,  167,  169,  170,  176,  177,  178,   78,   78,
-      171,  172,  181,  180,  184,  173,  180,  174,  185,  186,
-      187,  176,  177,  178,  188,  190,  191,  103,  181,  192,
-      184,  187,  193,  197,  185,  186,  190,  198,  180,  199,
-      188,  180,  191,  200,  201,  192,  202,  203,  193,  197,
-
-      204,  205,  103,  198,  205,  199,  205,   56,  200,  205,
-      201,   47,  202,  203,  209,   37,  204,  209,  206,  209,
-      209,  209,  209,  206,   40,   40,   40,   40,   40,   40,
-       40,   45,  209,  209,  209,   45,   45,   46,   46,   46,
-       46,   46,   46,   46,   59,  209,   59,   79,   79,   79,
-       79,   79,   79,   79,   91,   91,   91,   91,   91,   91,
-       91,  194,  194,  194,  209,  194,  194,  194,  196,  209,
-      196,  209,  196,  196,  196,  207,  207,  207,  207,  207,
-      209,  207,   11,  209,  209,  209,  209,  209,  209,  209,
+       81,   81,   79,   81,   81,   81,   81,   81,   81,   81,
+       81,   81,   81,   81,   70,  149,   95,   70,  171,   95,
+
+      172,  173,  174,  188,  181,  199,  180,  149,  103,  180,
+      190,  200,  180,  203,  171,  180,  172,  173,  174,  188,
+      103,  199,  190,  179,  204,  178,  103,  200,  205,  203,
+      205,  205,  177,  205,   72,   73,  176,   74,   75,   96,
+      204,   76,   78,  175,   80,  206,  170,  206,  169,   78,
+       78,  168,  167,  166,  165,   78,  164,   78,  163,  162,
+       78,  161,   78,   78,  160,  159,  158,  157,  156,  155,
+      154,  153,  152,  150,  148,  147,  146,  145,  144,   78,
+       78,   40,   40,   40,   40,   40,   40,   40,   45,  143,
+      142,  141,   45,   45,   46,   46,   46,   46,   46,   46,
+
+       46,   59,  140,   59,   79,   79,   79,   79,   79,   79,
+       79,   91,   91,   91,   91,   91,   91,   91,  194,  194,
+      194,  139,  194,  194,  194,  196,  138,  196,  137,  196,
+      196,  196,  207,  207,  207,  207,  207,  136,  207,  135,
+      132,  129,  128,  124,  123,  120,  117,  116,  113,   80,
+      112,  111,  110,  105,  101,   86,   85,   47,   82,   77,
+       62,   58,   57,   56,   47,  209,   37,   11,  209,  209,
       209,  209,  209,  209,  209,  209,  209,  209,  209,  209,
-
       209,  209,  209,  209,  209,  209,  209,  209,  209,  209,
       209,  209,  209,  209,  209,  209,  209,  209,  209,  209,
+
       209,  209,  209,  209,  209,  209,  209,  209,  209,  209,
-      209,  209
+      209,  209,  209,  209,  209,  209,  209
     } ;
 
-static yyconst flex_int16_t yy_chk[633] =
+static const flex_int16_t yy_chk[518] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    2,
-        4,   28,    2,    4,    7,    2,    4,    6,    6,    8,
-        6,    7,    7,    6,    9,   28,    8,    8,    9,    6,
-       10,    9,   29,   31,   10,   18,   18,   10,   18,   18,
-        6,    6,   32,   18,   31,  207,   29,   33,   33,   35,
-       33,   49,   35,  100,   32,   35,    6,    6,   17,   42,
-
-       42,   17,   42,   50,  100,   50,   52,   49,   51,   58,
-       75,  172,   58,   51,   60,  182,  182,   62,   50,   50,
-       52,   76,   17,   17,   51,   75,   17,   51,   53,   53,
-       60,   53,   53,   62,   17,   76,   53,   58,   17,   17,
-      104,   17,   64,  104,   61,   17,   34,   54,   54,  163,
-       54,   54,   58,   34,   34,   54,   61,   72,   64,   34,
-       61,   34,   65,   65,   34,   65,   34,   34,   68,   71,
-      162,   68,   71,   72,   68,   96,   73,  125,   73,   83,
-       83,   98,   83,   71,   34,   34,   36,   36,  125,   96,
-       36,   73,   73,   36,   36,  110,   98,   84,   74,   36,
-
-       84,   36,   85,   74,   36,   84,   36,   36,  146,  110,
-      159,   36,   36,   87,   74,   36,   36,   74,   85,  146,
-       89,  159,   90,   36,   36,   36,   86,   36,   36,   87,
-       36,   36,   86,   88,   36,   38,   89,   38,   90,  139,
-       88,   86,   38,   38,   86,  140,   99,  138,   38,   88,
-       38,  128,  105,   38,   88,   38,   38,   91,   91,  140,
-       91,   91,   99,   92,   92,   91,   92,   92,  105,  126,
-      113,   92,  112,   38,   38,   39,   39,   39,   39,   39,
+        4,  207,    2,    4,    7,    2,    4,    6,    6,    8,
+        6,    7,    7,    6,    9,  198,    8,    8,    9,    6,
+       10,    9,   28,   29,   10,   17,   32,   10,   17,   31,
+        6,    6,   18,   18,   60,   18,   18,   28,   29,   32,
+       18,   31,   33,   33,  193,   33,    6,    6,   35,   17,
+
+       60,   35,   42,   42,   35,   42,   48,   51,   51,   48,
+       17,   52,   58,   62,   52,   58,   17,  187,   17,   34,
+       53,   53,   61,   53,   53,  186,   34,   34,   53,   62,
+       48,   89,   34,   61,   34,   64,   89,   34,   61,   34,
+       34,   48,   54,   54,  179,   54,   54,   48,  178,   48,
+       54,   64,   73,   73,  175,   58,   34,   34,   36,   65,
+       65,   36,   65,   68,   71,   74,   68,   71,   74,   68,
+       83,   83,   36,   83,   84,   98,   87,   84,   71,   87,
+       91,   91,   84,   91,   91,  100,   92,   92,   91,   92,
+       92,   98,   93,   93,   92,   93,   93,  100,   36,   36,
+
+       93,   36,   36,  172,   99,   36,   38,  104,   38,  103,
+      104,  108,  103,   38,   38,  106,  108,  127,  106,   38,
+       99,   38,  114,  103,   38,  114,   38,   38,   94,   94,
+      114,   94,   94,  127,  182,  182,   94,  170,  169,  168,
+      164,  163,  162,   38,   38,   39,   39,   39,   39,   39,
        39,   39,   39,   39,   39,   39,   39,   39,   39,   39,
        39,   39,   39,   39,   39,   39,   39,   39,   39,   39,
-
        39,   39,   39,   39,   39,   39,   39,   39,   39,   39,
        39,   39,   39,   39,   39,   39,   39,   39,   39,   39,
-       39,   39,   39,   39,   48,   93,   93,   48,   93,   93,
-      107,   94,   94,   93,   94,   94,  101,  103,   95,   94,
-      103,   95,  109,  153,  106,  111,  107,  108,   48,   48,
-      106,  103,   48,   82,  108,   79,   77,  153,  109,  106,
-       48,  111,  106,  108,   48,   48,   95,   48,  108,  116,
-      114,   48,   69,  114,  117,   69,  118,  120,  114,  119,
-      122,   95,  121,  123,  116,   63,   69,  124,   46,  127,
-      117,  129,  118,  120,  119,  122,   69,   69,  121,  123,
-
-       69,   69,  130,  124,  127,  131,  129,  133,   69,  132,
-      134,   41,   69,   69,  135,   69,   69,   37,  130,   69,
-       78,  131,   78,  133,  132,   30,  134,   78,   78,  135,
-      136,  137,  143,   78,  144,   78,  145,  147,   78,  148,
-       78,   78,   26,   25,  149,  150,  136,  137,  143,  151,
-      144,  152,  145,  147,  148,  156,  157,  158,   78,   78,
-      149,  150,  161,  160,  164,  151,  160,  152,  167,  168,
-      170,  156,  157,  158,  171,  174,  175,  160,  161,  178,
-      164,  170,  179,  186,  167,  168,  174,  187,  180,  189,
-      171,  180,  175,  190,  193,  178,  198,  199,  179,  186,
-
-      200,  201,  180,  187,  201,  189,  205,   23,  190,  205,
-      193,   15,  198,  199,   11,    5,  200,    0,  201,    0,
-        0,    0,    0,  205,  210,  210,  210,  210,  210,  210,
-      210,  211,    0,    0,    0,  211,  211,  212,  212,  212,
-      212,  212,  212,  212,  213,    0,  213,  214,  214,  214,
-      214,  214,  214,  214,  215,  215,  215,  215,  215,  215,
-      215,  216,  216,  216,    0,  216,  216,  216,  217,    0,
-      217,    0,  217,  217,  217,  218,  218,  218,  218,  218,
-        0,  218,  209,  209,  209,  209,  209,  209,  209,  209,
+       39,   39,   39,   39,   69,  125,   95,   69,  149,   95,
+
+      150,  151,  152,  171,  161,  189,  160,  125,   69,  160,
+      174,  190,  180,  199,  149,  180,  150,  151,  152,  171,
+      160,  189,  174,  159,  200,  158,  180,  190,  201,  199,
+      205,  201,  157,  205,   69,   69,  156,   69,   69,   95,
+      200,   69,   78,  153,   78,  201,  148,  205,  147,   78,
+       78,  146,  145,  144,  141,   78,  140,   78,  139,  138,
+       78,  137,   78,   78,  136,  135,  134,  133,  132,  131,
+      130,  129,  128,  126,  124,  123,  122,  121,  120,   78,
+       78,  210,  210,  210,  210,  210,  210,  210,  211,  119,
+      118,  117,  211,  211,  212,  212,  212,  212,  212,  212,
+
+      212,  213,  116,  213,  214,  214,  214,  214,  214,  214,
+      214,  215,  215,  215,  215,  215,  215,  215,  216,  216,
+      216,  113,  216,  216,  216,  217,  112,  217,  111,  217,
+      217,  217,  218,  218,  218,  218,  218,  110,  218,  109,
+      107,  105,  101,   96,   90,   88,   86,   85,   82,   79,
+       77,   76,   75,   72,   63,   50,   49,   46,   41,   37,
+       30,   26,   25,   23,   15,   11,    5,  209,  209,  209,
       209,  209,  209,  209,  209,  209,  209,  209,  209,  209,
-
       209,  209,  209,  209,  209,  209,  209,  209,  209,  209,
       209,  209,  209,  209,  209,  209,  209,  209,  209,  209,
+
       209,  209,  209,  209,  209,  209,  209,  209,  209,  209,
-      209,  209
+      209,  209,  209,  209,  209,  209,  209
     } ;
 
 /* The intent behind this definition is that it'll catch
@@ -637,8 +810,6 @@ static yyconst flex_int16_t yy_chk[633] =
 #define yymore() yymore_used_but_not_detected
 #define YY_MORE_ADJ 0
 #define YY_RESTORE_YY_MORE_OFFSET
-#line 1 "cmFortranLexer.in.l"
-#line 2 "cmFortranLexer.in.l"
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
 /*-------------------------------------------------------------------------
@@ -657,14 +828,12 @@ This file must be translated to C++ and modified to build everywhere.
 
 Run flex >= 2.6 like this:
 
-  flex -i --nounistd -DFLEXINT_H --prefix=cmFortran_yy --header-file=cmFortranLexer.h -ocmFortranLexer.cxx cmFortranLexer.in.l
+  flex -i --nounistd -DFLEXINT_H --noline --header-file=cmFortranLexer.h -ocmFortranLexer.cxx cmFortranLexer.in.l
 
 Modify cmFortranLexer.cxx:
-  - remove trailing whitespace: sed -i 's/\s*$//' cmFortranLexer.h cmFortranLexer.cxx
-  - remove blank lines at end of file
-  - #include "cmStandardLexer.h" at the top
-  - add cast in cmFortran_yy_scan_bytes for loop condition of _yybytes_len to size_t
-
+  - remove trailing whitespace:              sed -i 's/\s*$//' cmFortranLexer.h cmFortranLexer.cxx
+  - remove blank lines at end of file:       sed -i '${/^$/d;}' cmFortranLexer.h cmFortranLexer.cxx
+  - #include "cmStandardLexer.h" at the top: sed -i '1i#include "cmStandardLexer.h"' cmFortranLexer.cxx
 */
 
 /* IWYU pragma: no_forward_declare yyguts_t */
@@ -684,9 +853,6 @@ Modify cmFortranLexer.cxx:
 
 /*--------------------------------------------------------------------------*/
 
-
-#line 688 "cmFortranLexer.cxx"
-
 #define INITIAL 0
 #define free_fmt 1
 #define fixed_fmt 2
@@ -731,44 +897,44 @@ struct yyguts_t
 
     }; /* end struct yyguts_t */
 
-static int yy_init_globals (yyscan_t yyscanner );
+static int yy_init_globals ( yyscan_t yyscanner );
 
-int cmFortran_yylex_init (yyscan_t* scanner);
+int yylex_init (yyscan_t* scanner);
 
-int cmFortran_yylex_init_extra (YY_EXTRA_TYPE user_defined,yyscan_t* scanner);
+int yylex_init_extra ( YY_EXTRA_TYPE user_defined, yyscan_t* scanner);
 
 /* Accessor methods to globals.
    These are made visible to non-reentrant scanners for convenience. */
 
-int cmFortran_yylex_destroy (yyscan_t yyscanner );
+int yylex_destroy ( yyscan_t yyscanner );
 
-int cmFortran_yyget_debug (yyscan_t yyscanner );
+int yyget_debug ( yyscan_t yyscanner );
 
-void cmFortran_yyset_debug (int debug_flag ,yyscan_t yyscanner );
+void yyset_debug ( int debug_flag , yyscan_t yyscanner );
 
-YY_EXTRA_TYPE cmFortran_yyget_extra (yyscan_t yyscanner );
+YY_EXTRA_TYPE yyget_extra ( yyscan_t yyscanner );
 
-void cmFortran_yyset_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner );
+void yyset_extra ( YY_EXTRA_TYPE user_defined , yyscan_t yyscanner );
 
-FILE *cmFortran_yyget_in (yyscan_t yyscanner );
+FILE *yyget_in ( yyscan_t yyscanner );
 
-void cmFortran_yyset_in  (FILE * _in_str ,yyscan_t yyscanner );
+void yyset_in  ( FILE * _in_str , yyscan_t yyscanner );
 
-FILE *cmFortran_yyget_out (yyscan_t yyscanner );
+FILE *yyget_out ( yyscan_t yyscanner );
 
-void cmFortran_yyset_out  (FILE * _out_str ,yyscan_t yyscanner );
+void yyset_out  ( FILE * _out_str , yyscan_t yyscanner );
 
-			int cmFortran_yyget_leng (yyscan_t yyscanner );
+			int yyget_leng ( yyscan_t yyscanner );
 
-char *cmFortran_yyget_text (yyscan_t yyscanner );
+char *yyget_text ( yyscan_t yyscanner );
 
-int cmFortran_yyget_lineno (yyscan_t yyscanner );
+int yyget_lineno ( yyscan_t yyscanner );
 
-void cmFortran_yyset_lineno (int _line_number ,yyscan_t yyscanner );
+void yyset_lineno ( int _line_number , yyscan_t yyscanner );
 
-int cmFortran_yyget_column  (yyscan_t yyscanner );
+int yyget_column  ( yyscan_t yyscanner );
 
-void cmFortran_yyset_column (int _column_no ,yyscan_t yyscanner );
+void yyset_column ( int _column_no , yyscan_t yyscanner );
 
 /* Macros after this point can all be overridden by user definitions in
  * section 1.
@@ -776,32 +942,31 @@ void cmFortran_yyset_column (int _column_no ,yyscan_t yyscanner );
 
 #ifndef YY_SKIP_YYWRAP
 #ifdef __cplusplus
-extern "C" int cmFortran_yywrap (yyscan_t yyscanner );
+extern "C" int yywrap ( yyscan_t yyscanner );
 #else
-extern int cmFortran_yywrap (yyscan_t yyscanner );
+extern int yywrap ( yyscan_t yyscanner );
 #endif
 #endif
 
 #ifndef YY_NO_UNPUT
 
-    static void yyunput (int c,char *buf_ptr  ,yyscan_t yyscanner);
+    static void yyunput ( int c, char *buf_ptr  , yyscan_t yyscanner);
 
 #endif
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char *,yyconst char *,int ,yyscan_t yyscanner);
+static void yy_flex_strncpy ( char *, const char *, int , yyscan_t yyscanner);
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
+static int yy_flex_strlen ( const char * , yyscan_t yyscanner);
 #endif
 
 #ifndef YY_NO_INPUT
-
 #ifdef __cplusplus
-static int yyinput (yyscan_t yyscanner );
+static int yyinput ( yyscan_t yyscanner );
 #else
-static int input (yyscan_t yyscanner );
+static int input ( yyscan_t yyscanner );
 #endif
 
 #endif
@@ -832,7 +997,7 @@ static int input (yyscan_t yyscanner );
 	if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
 		{ \
 		int c = '*'; \
-		size_t n; \
+		int n; \
 		for ( n = 0; n < max_size && \
 			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
 			buf[n] = (char) c; \
@@ -845,7 +1010,7 @@ static int input (yyscan_t yyscanner );
 	else \
 		{ \
 		errno=0; \
-		while ( (result = (int) fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
+		while ( (result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin)) \
 			{ \
 			if( errno != EINTR) \
 				{ \
@@ -886,9 +1051,9 @@ static int input (yyscan_t yyscanner );
 #ifndef YY_DECL
 #define YY_DECL_IS_OURS 1
 
-extern int cmFortran_yylex (yyscan_t yyscanner);
+extern int yylex (yyscan_t yyscanner);
 
-#define YY_DECL int cmFortran_yylex (yyscan_t yyscanner)
+#define YY_DECL int yylex (yyscan_t yyscanner)
 #endif /* !YY_DECL */
 
 /* Code executed at the beginning of each rule, after yytext and yyleng
@@ -936,19 +1101,15 @@ YY_DECL
 			yyout = stdout;
 
 		if ( ! YY_CURRENT_BUFFER ) {
-			cmFortran_yyensure_buffer_stack (yyscanner);
+			yyensure_buffer_stack (yyscanner);
 			YY_CURRENT_BUFFER_LVALUE =
-				cmFortran_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+				yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner);
 		}
 
-		cmFortran_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 		}
 
 	{
-#line 56 "cmFortranLexer.in.l"
-
-
-#line 951 "cmFortranLexer.cxx"
 
 	while ( /*CONSTCOND*/1 )		/* loops until end-of-file is reached */
 		{
@@ -977,12 +1138,12 @@ yy_match:
 				{
 				yy_current_state = (int) yy_def[yy_current_state];
 				if ( yy_current_state >= 210 )
-					yy_c = yy_meta[(unsigned int) yy_c];
+					yy_c = yy_meta[yy_c];
 				}
-			yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
+			yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 			++yy_cp;
 			}
-		while ( yy_base[yy_current_state] != 583 );
+		while ( yy_base[yy_current_state] != 468 );
 
 yy_find_action:
 		yy_act = yy_accept[yy_current_state];
@@ -1008,7 +1169,6 @@ do_action:	/* This label is used only to access EOF actions. */
 
 case 1:
 YY_RULE_SETUP
-#line 58 "cmFortranLexer.in.l"
 {
   cmFortranParser_StringStart(yyextra);
   cmFortranParser_SetOldStartcond(yyextra, YY_START);
@@ -1017,7 +1177,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 2:
 YY_RULE_SETUP
-#line 64 "cmFortranLexer.in.l"
 {
   cmFortranParser_StringStart(yyextra);
   cmFortranParser_SetOldStartcond(yyextra, YY_START);
@@ -1025,10 +1184,8 @@ YY_RULE_SETUP
 }
 	YY_BREAK
 case 3:
-#line 71 "cmFortranLexer.in.l"
 case 4:
 YY_RULE_SETUP
-#line 71 "cmFortranLexer.in.l"
 {
   BEGIN(cmFortranParser_GetOldStartcond(yyextra) );
   yylvalp->string = strdup(cmFortranParser_StringEnd(yyextra));
@@ -1037,17 +1194,14 @@ YY_RULE_SETUP
 	YY_BREAK
 case 5:
 /* rule 5 can match eol */
-#line 78 "cmFortranLexer.in.l"
 case 6:
 /* rule 6 can match eol */
 YY_RULE_SETUP
-#line 78 "cmFortranLexer.in.l"
 /* Ignore (continued strings, free fmt) */
 	YY_BREAK
 case 7:
 /* rule 7 can match eol */
 YY_RULE_SETUP
-#line 80 "cmFortranLexer.in.l"
 {
   if (cmFortranParser_GetOldStartcond(yyextra) == fixed_fmt)
     ; /* Ignore (cont. strings, fixed fmt) */
@@ -1060,7 +1214,6 @@ YY_RULE_SETUP
 case 8:
 /* rule 8 can match eol */
 YY_RULE_SETUP
-#line 90 "cmFortranLexer.in.l"
 {
   unput ('\n');
   BEGIN(INITIAL);
@@ -1069,7 +1222,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 9:
 YY_RULE_SETUP
-#line 96 "cmFortranLexer.in.l"
 {
   cmFortranParser_StringAppend(yyextra, yytext[0]);
 }
@@ -1077,24 +1229,20 @@ YY_RULE_SETUP
 case 10:
 /* rule 10 can match eol */
 YY_RULE_SETUP
-#line 100 "cmFortranLexer.in.l"
 { return EOSTMT; } /* Treat comments like */
 	YY_BREAK
 case 11:
 /* rule 11 can match eol */
 YY_RULE_SETUP
-#line 101 "cmFortranLexer.in.l"
 { return EOSTMT; } /* empty lines */
 	YY_BREAK
 case 12:
 YY_RULE_SETUP
-#line 103 "cmFortranLexer.in.l"
 { return CPP_LINE_DIRECTIVE; }
 	YY_BREAK
 case 13:
 /* rule 13 can match eol */
 YY_RULE_SETUP
-#line 104 "cmFortranLexer.in.l"
 {
   yytext[yyleng-1] = 0;
   yylvalp->string = strdup(strchr(yytext, '<')+1);
@@ -1103,171 +1251,138 @@ YY_RULE_SETUP
 	YY_BREAK
 case 14:
 YY_RULE_SETUP
-#line 109 "cmFortranLexer.in.l"
 { return CPP_INCLUDE; }
 	YY_BREAK
 case 15:
 YY_RULE_SETUP
-#line 110 "cmFortranLexer.in.l"
 { return F90PPR_INCLUDE; }
 	YY_BREAK
 case 16:
 YY_RULE_SETUP
-#line 111 "cmFortranLexer.in.l"
 { return COCO_INCLUDE; }
 	YY_BREAK
 case 17:
 YY_RULE_SETUP
-#line 113 "cmFortranLexer.in.l"
 { return CPP_DEFINE; }
 	YY_BREAK
 case 18:
 YY_RULE_SETUP
-#line 114 "cmFortranLexer.in.l"
 { return F90PPR_DEFINE; }
 	YY_BREAK
 case 19:
 YY_RULE_SETUP
-#line 116 "cmFortranLexer.in.l"
 { return CPP_UNDEF; }
 	YY_BREAK
 case 20:
 YY_RULE_SETUP
-#line 117 "cmFortranLexer.in.l"
 { return F90PPR_UNDEF; }
 	YY_BREAK
 case 21:
 YY_RULE_SETUP
-#line 119 "cmFortranLexer.in.l"
 { return CPP_IFDEF; }
 	YY_BREAK
 case 22:
 YY_RULE_SETUP
-#line 120 "cmFortranLexer.in.l"
 { return CPP_IFNDEF; }
 	YY_BREAK
 case 23:
 YY_RULE_SETUP
-#line 121 "cmFortranLexer.in.l"
 { return CPP_IF; }
 	YY_BREAK
 case 24:
 YY_RULE_SETUP
-#line 122 "cmFortranLexer.in.l"
 { return CPP_ELIF; }
 	YY_BREAK
 case 25:
 YY_RULE_SETUP
-#line 123 "cmFortranLexer.in.l"
 { return CPP_ELSE; }
 	YY_BREAK
 case 26:
 YY_RULE_SETUP
-#line 124 "cmFortranLexer.in.l"
 { return CPP_ENDIF; }
 	YY_BREAK
 case 27:
 YY_RULE_SETUP
-#line 126 "cmFortranLexer.in.l"
 { return F90PPR_IFDEF; }
 	YY_BREAK
 case 28:
 YY_RULE_SETUP
-#line 127 "cmFortranLexer.in.l"
 { return F90PPR_IFNDEF; }
 	YY_BREAK
 case 29:
 YY_RULE_SETUP
-#line 128 "cmFortranLexer.in.l"
 { return F90PPR_IF; }
 	YY_BREAK
 case 30:
 YY_RULE_SETUP
-#line 129 "cmFortranLexer.in.l"
 { return F90PPR_ELIF; }
 	YY_BREAK
 case 31:
 YY_RULE_SETUP
-#line 130 "cmFortranLexer.in.l"
 { return F90PPR_ELSE; }
 	YY_BREAK
 case 32:
 YY_RULE_SETUP
-#line 131 "cmFortranLexer.in.l"
 { return F90PPR_ENDIF; }
 	YY_BREAK
 /* Line continuations, possible involving comments.  */
 case 33:
 /* rule 33 can match eol */
 YY_RULE_SETUP
-#line 134 "cmFortranLexer.in.l"
 
 	YY_BREAK
 case 34:
 /* rule 34 can match eol */
 YY_RULE_SETUP
-#line 135 "cmFortranLexer.in.l"
 
 	YY_BREAK
 case 35:
 YY_RULE_SETUP
-#line 137 "cmFortranLexer.in.l"
 { return COMMA; }
 	YY_BREAK
 case 36:
 YY_RULE_SETUP
-#line 139 "cmFortranLexer.in.l"
 { return DCOLON; }
 	YY_BREAK
 case 37:
 YY_RULE_SETUP
-#line 140 "cmFortranLexer.in.l"
 { return COLON; }
 	YY_BREAK
 case 38:
 /* rule 38 can match eol */
 YY_RULE_SETUP
-#line 142 "cmFortranLexer.in.l"
 { return GARBAGE; }
 	YY_BREAK
 case 39:
 YY_RULE_SETUP
-#line 144 "cmFortranLexer.in.l"
 { return ASSIGNMENT_OP; }
 	YY_BREAK
 case 40:
 YY_RULE_SETUP
-#line 146 "cmFortranLexer.in.l"
 { return END; }
 	YY_BREAK
 case 41:
 YY_RULE_SETUP
-#line 147 "cmFortranLexer.in.l"
 { return INCLUDE; }
 	YY_BREAK
 case 42:
 YY_RULE_SETUP
-#line 148 "cmFortranLexer.in.l"
 { return INTERFACE; }
 	YY_BREAK
 case 43:
 YY_RULE_SETUP
-#line 149 "cmFortranLexer.in.l"
 { return MODULE; }
 	YY_BREAK
 case 44:
 YY_RULE_SETUP
-#line 150 "cmFortranLexer.in.l"
 { return SUBMODULE; }
 	YY_BREAK
 case 45:
 YY_RULE_SETUP
-#line 151 "cmFortranLexer.in.l"
 { return USE; }
 	YY_BREAK
 case 46:
 YY_RULE_SETUP
-#line 153 "cmFortranLexer.in.l"
 {
   yylvalp->string = strdup(yytext);
   return WORD;
@@ -1275,39 +1390,32 @@ YY_RULE_SETUP
 	YY_BREAK
 case 47:
 YY_RULE_SETUP
-#line 158 "cmFortranLexer.in.l"
 { return LPAREN; }
 	YY_BREAK
 case 48:
 YY_RULE_SETUP
-#line 159 "cmFortranLexer.in.l"
 { return RPAREN; }
 	YY_BREAK
 case 49:
 YY_RULE_SETUP
-#line 161 "cmFortranLexer.in.l"
 { return GARBAGE; }
 	YY_BREAK
 case 50:
 /* rule 50 can match eol */
 YY_RULE_SETUP
-#line 163 "cmFortranLexer.in.l"
 { return EOSTMT; }
 	YY_BREAK
 case 51:
 YY_RULE_SETUP
-#line 166 "cmFortranLexer.in.l"
 /* Ignore */
 	YY_BREAK
 case 52:
 /* rule 52 can match eol */
 YY_RULE_SETUP
-#line 167 "cmFortranLexer.in.l"
 /* Ignore line-endings preceded by \ */
 	YY_BREAK
 case 53:
 YY_RULE_SETUP
-#line 169 "cmFortranLexer.in.l"
 { return *yytext; }
 	YY_BREAK
 case YY_STATE_EOF(INITIAL):
@@ -1315,7 +1423,6 @@ case YY_STATE_EOF(free_fmt):
 case YY_STATE_EOF(fixed_fmt):
 case YY_STATE_EOF(str_sq):
 case YY_STATE_EOF(str_dq):
-#line 171 "cmFortranLexer.in.l"
 {
   if(!cmFortranParser_FilePop(yyextra) )
     {
@@ -1325,10 +1432,8 @@ case YY_STATE_EOF(str_dq):
 	YY_BREAK
 case 54:
 YY_RULE_SETUP
-#line 178 "cmFortranLexer.in.l"
 ECHO;
 	YY_BREAK
-#line 1331 "cmFortranLexer.cxx"
 
 	case YY_END_OF_BUFFER:
 		{
@@ -1344,7 +1449,7 @@ ECHO;
 			/* We're scanning a new file or input source.  It's
 			 * possible that this happened because the user
 			 * just pointed yyin at a new source and called
-			 * cmFortran_yylex().  If so, then we have to assure
+			 * yylex().  If so, then we have to assure
 			 * consistency between YY_CURRENT_BUFFER and our
 			 * globals.  Here is the right place to do so, because
 			 * this is the first action (other than possibly a
@@ -1404,7 +1509,7 @@ ECHO;
 				{
 				yyg->yy_did_buffer_switch_on_eof = 0;
 
-				if ( cmFortran_yywrap(yyscanner ) )
+				if ( yywrap( yyscanner ) )
 					{
 					/* Note: because we've taken care in
 					 * yy_get_next_buffer() to have set up
@@ -1458,7 +1563,7 @@ ECHO;
 	} /* end of action switch */
 		} /* end of scanning one token */
 	} /* end of user's declarations */
-} /* end of cmFortran_yylex */
+} /* end of yylex */
 
 /* yy_get_next_buffer - try to read in a new buffer
  *
@@ -1472,7 +1577,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
 	char *source = yyg->yytext_ptr;
-	yy_size_t number_to_move, i;
+	int number_to_move, i;
 	int ret_val;
 
 	if ( yyg->yy_c_buf_p > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] )
@@ -1501,7 +1606,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 	/* Try to read more data. */
 
 	/* First move last chars to start of buffer. */
-	number_to_move = (yy_size_t) (yyg->yy_c_buf_p - yyg->yytext_ptr) - 1;
+	number_to_move = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr - 1);
 
 	for ( i = 0; i < number_to_move; ++i )
 		*(dest++) = *(source++);
@@ -1537,7 +1642,8 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 
 				b->yy_ch_buf = (char *)
 					/* Include room in for 2 EOB chars. */
-					cmFortran_yyrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2 ,yyscanner );
+					yyrealloc( (void *) b->yy_ch_buf,
+							 (yy_size_t) (b->yy_buf_size + 2) , yyscanner );
 				}
 			else
 				/* Can't grow it, we don't own it. */
@@ -1569,7 +1675,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		if ( number_to_move == YY_MORE_ADJ )
 			{
 			ret_val = EOB_ACT_END_OF_FILE;
-			cmFortran_yyrestart(yyin  ,yyscanner);
+			yyrestart( yyin  , yyscanner);
 			}
 
 		else
@@ -1583,12 +1689,15 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 	else
 		ret_val = EOB_ACT_CONTINUE_SCAN;
 
-	if ((int) (yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
+	if ((yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
 		/* Extend the array by 50%, plus the number we really need. */
 		int new_size = yyg->yy_n_chars + number_to_move + (yyg->yy_n_chars >> 1);
-		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) cmFortran_yyrealloc((void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf,new_size ,yyscanner );
+		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc(
+			(void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size , yyscanner );
 		if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
 			YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
+		/* "- 2" to take care of EOB's */
+		YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2);
 	}
 
 	yyg->yy_n_chars += number_to_move;
@@ -1623,9 +1732,9 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 			{
 			yy_current_state = (int) yy_def[yy_current_state];
 			if ( yy_current_state >= 210 )
-				yy_c = yy_meta[(unsigned int) yy_c];
+				yy_c = yy_meta[yy_c];
 			}
-		yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
+		yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 		}
 
 	return yy_current_state;
@@ -1652,9 +1761,9 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		{
 		yy_current_state = (int) yy_def[yy_current_state];
 		if ( yy_current_state >= 210 )
-			yy_c = yy_meta[(unsigned int) yy_c];
+			yy_c = yy_meta[yy_c];
 		}
-	yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
+	yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 	yy_is_jam = (yy_current_state == 209);
 
 	(void)yyg;
@@ -1728,7 +1837,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 
 		else
 			{ /* need more input */
-			int offset = yyg->yy_c_buf_p - yyg->yytext_ptr;
+			int offset = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr);
 			++yyg->yy_c_buf_p;
 
 			switch ( yy_get_next_buffer( yyscanner ) )
@@ -1745,13 +1854,13 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 					 */
 
 					/* Reset buffer status. */
-					cmFortran_yyrestart(yyin ,yyscanner);
+					yyrestart( yyin , yyscanner);
 
 					/*FALLTHROUGH*/
 
 				case EOB_ACT_END_OF_FILE:
 					{
-					if ( cmFortran_yywrap(yyscanner ) )
+					if ( yywrap( yyscanner ) )
 						return 0;
 
 					if ( ! yyg->yy_did_buffer_switch_on_eof )
@@ -1785,34 +1894,34 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @note This function does not reset the start condition to @c INITIAL .
  */
-    void cmFortran_yyrestart  (FILE * input_file , yyscan_t yyscanner)
+    void yyrestart  (FILE * input_file , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	if ( ! YY_CURRENT_BUFFER ){
-        cmFortran_yyensure_buffer_stack (yyscanner);
+        yyensure_buffer_stack (yyscanner);
 		YY_CURRENT_BUFFER_LVALUE =
-            cmFortran_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner);
 	}
 
-	cmFortran_yy_init_buffer(YY_CURRENT_BUFFER,input_file ,yyscanner);
-	cmFortran_yy_load_buffer_state(yyscanner );
+	yy_init_buffer( YY_CURRENT_BUFFER, input_file , yyscanner);
+	yy_load_buffer_state( yyscanner );
 }
 
 /** Switch to a different input buffer.
  * @param new_buffer The new input buffer.
  * @param yyscanner The scanner object.
  */
-    void cmFortran_yy_switch_to_buffer  (YY_BUFFER_STATE  new_buffer , yyscan_t yyscanner)
+    void yy_switch_to_buffer  (YY_BUFFER_STATE  new_buffer , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	/* TODO. We should be able to replace this entire function body
 	 * with
-	 *		cmFortran_yypop_buffer_state();
-	 *		cmFortran_yypush_buffer_state(new_buffer);
+	 *		yypop_buffer_state();
+	 *		yypush_buffer_state(new_buffer);
      */
-	cmFortran_yyensure_buffer_stack (yyscanner);
+	yyensure_buffer_stack (yyscanner);
 	if ( YY_CURRENT_BUFFER == new_buffer )
 		return;
 
@@ -1825,17 +1934,17 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		}
 
 	YY_CURRENT_BUFFER_LVALUE = new_buffer;
-	cmFortran_yy_load_buffer_state(yyscanner );
+	yy_load_buffer_state( yyscanner );
 
 	/* We don't actually know whether we did this switch during
-	 * EOF (cmFortran_yywrap()) processing, but the only time this flag
-	 * is looked at is after cmFortran_yywrap() is called, so it's safe
+	 * EOF (yywrap()) processing, but the only time this flag
+	 * is looked at is after yywrap() is called, so it's safe
 	 * to go ahead and always set it.
 	 */
 	yyg->yy_did_buffer_switch_on_eof = 1;
 }
 
-static void cmFortran_yy_load_buffer_state  (yyscan_t yyscanner)
+static void yy_load_buffer_state  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
@@ -1850,35 +1959,35 @@ static void cmFortran_yy_load_buffer_state  (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @return the allocated buffer state.
  */
-    YY_BUFFER_STATE cmFortran_yy_create_buffer  (FILE * file, int  size , yyscan_t yyscanner)
+    YY_BUFFER_STATE yy_create_buffer  (FILE * file, int  size , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 
-	b = (YY_BUFFER_STATE) cmFortran_yyalloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+	b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) , yyscanner );
 	if ( ! b )
-		YY_FATAL_ERROR( "out of dynamic memory in cmFortran_yy_create_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 
-	b->yy_buf_size = (yy_size_t)size;
+	b->yy_buf_size = size;
 
 	/* yy_ch_buf has to be 2 characters longer than the size given because
 	 * we need to put in 2 end-of-buffer characters.
 	 */
-	b->yy_ch_buf = (char *) cmFortran_yyalloc(b->yy_buf_size + 2 ,yyscanner );
+	b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2) , yyscanner );
 	if ( ! b->yy_ch_buf )
-		YY_FATAL_ERROR( "out of dynamic memory in cmFortran_yy_create_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 
 	b->yy_is_our_buffer = 1;
 
-	cmFortran_yy_init_buffer(b,file ,yyscanner);
+	yy_init_buffer( b, file , yyscanner);
 
 	return b;
 }
 
 /** Destroy the buffer.
- * @param b a buffer created with cmFortran_yy_create_buffer()
+ * @param b a buffer created with yy_create_buffer()
  * @param yyscanner The scanner object.
  */
-    void cmFortran_yy_delete_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+    void yy_delete_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -1889,28 +1998,28 @@ static void cmFortran_yy_load_buffer_state  (yyscan_t yyscanner)
 		YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
 
 	if ( b->yy_is_our_buffer )
-		cmFortran_yyfree((void *) b->yy_ch_buf ,yyscanner );
+		yyfree( (void *) b->yy_ch_buf , yyscanner );
 
-	cmFortran_yyfree((void *) b ,yyscanner );
+	yyfree( (void *) b , yyscanner );
 }
 
 /* Initializes or reinitializes a buffer.
  * This function is sometimes called more than once on the same buffer,
- * such as during a cmFortran_yyrestart() or at EOF.
+ * such as during a yyrestart() or at EOF.
  */
-    static void cmFortran_yy_init_buffer  (YY_BUFFER_STATE  b, FILE * file , yyscan_t yyscanner)
+    static void yy_init_buffer  (YY_BUFFER_STATE  b, FILE * file , yyscan_t yyscanner)
 
 {
 	int oerrno = errno;
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
-	cmFortran_yy_flush_buffer(b ,yyscanner);
+	yy_flush_buffer( b , yyscanner);
 
 	b->yy_input_file = file;
 	b->yy_fill_buffer = 1;
 
-    /* If b is the current buffer, then cmFortran_yy_init_buffer was _probably_
-     * called from cmFortran_yyrestart() or through yy_get_next_buffer.
+    /* If b is the current buffer, then yy_init_buffer was _probably_
+     * called from yyrestart() or through yy_get_next_buffer.
      * In that case, we don't want to reset the lineno or column.
      */
     if (b != YY_CURRENT_BUFFER){
@@ -1927,7 +2036,7 @@ static void cmFortran_yy_load_buffer_state  (yyscan_t yyscanner)
  * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
  * @param yyscanner The scanner object.
  */
-    void cmFortran_yy_flush_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+    void yy_flush_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if ( ! b )
@@ -1948,7 +2057,7 @@ static void cmFortran_yy_load_buffer_state  (yyscan_t yyscanner)
 	b->yy_buffer_status = YY_BUFFER_NEW;
 
 	if ( b == YY_CURRENT_BUFFER )
-		cmFortran_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 }
 
 /** Pushes the new state onto the stack. The new state becomes
@@ -1957,15 +2066,15 @@ static void cmFortran_yy_load_buffer_state  (yyscan_t yyscanner)
  *  @param new_buffer The new state.
  *  @param yyscanner The scanner object.
  */
-void cmFortran_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner)
+void yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if (new_buffer == NULL)
 		return;
 
-	cmFortran_yyensure_buffer_stack(yyscanner);
+	yyensure_buffer_stack(yyscanner);
 
-	/* This block is copied from cmFortran_yy_switch_to_buffer. */
+	/* This block is copied from yy_switch_to_buffer. */
 	if ( YY_CURRENT_BUFFER )
 		{
 		/* Flush out information for old buffer. */
@@ -1979,8 +2088,8 @@ void cmFortran_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscan
 		yyg->yy_buffer_stack_top++;
 	YY_CURRENT_BUFFER_LVALUE = new_buffer;
 
-	/* copied from cmFortran_yy_switch_to_buffer. */
-	cmFortran_yy_load_buffer_state(yyscanner );
+	/* copied from yy_switch_to_buffer. */
+	yy_load_buffer_state( yyscanner );
 	yyg->yy_did_buffer_switch_on_eof = 1;
 }
 
@@ -1988,19 +2097,19 @@ void cmFortran_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscan
  *  The next element becomes the new top.
  *  @param yyscanner The scanner object.
  */
-void cmFortran_yypop_buffer_state (yyscan_t yyscanner)
+void yypop_buffer_state (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if (!YY_CURRENT_BUFFER)
 		return;
 
-	cmFortran_yy_delete_buffer(YY_CURRENT_BUFFER ,yyscanner);
+	yy_delete_buffer(YY_CURRENT_BUFFER , yyscanner);
 	YY_CURRENT_BUFFER_LVALUE = NULL;
 	if (yyg->yy_buffer_stack_top > 0)
 		--yyg->yy_buffer_stack_top;
 
 	if (YY_CURRENT_BUFFER) {
-		cmFortran_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 		yyg->yy_did_buffer_switch_on_eof = 1;
 	}
 }
@@ -2008,9 +2117,9 @@ void cmFortran_yypop_buffer_state (yyscan_t yyscanner)
 /* Allocates the stack if it does not exist.
  *  Guarantees space for at least one push.
  */
-static void cmFortran_yyensure_buffer_stack (yyscan_t yyscanner)
+static void yyensure_buffer_stack (yyscan_t yyscanner)
 {
-	int num_to_alloc;
+	yy_size_t num_to_alloc;
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	if (!yyg->yy_buffer_stack) {
@@ -2020,11 +2129,11 @@ static void cmFortran_yyensure_buffer_stack (yyscan_t yyscanner)
 		 * immediate realloc on the next call.
          */
       num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */
-		yyg->yy_buffer_stack = (struct yy_buffer_state**)cmFortran_yyalloc
+		yyg->yy_buffer_stack = (struct yy_buffer_state**)yyalloc
 								(num_to_alloc * sizeof(struct yy_buffer_state*)
 								, yyscanner);
 		if ( ! yyg->yy_buffer_stack )
-			YY_FATAL_ERROR( "out of dynamic memory in cmFortran_yyensure_buffer_stack()" );
+			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
 
 		memset(yyg->yy_buffer_stack, 0, num_to_alloc * sizeof(struct yy_buffer_state*));
 
@@ -2039,12 +2148,12 @@ static void cmFortran_yyensure_buffer_stack (yyscan_t yyscanner)
 		yy_size_t grow_size = 8 /* arbitrary grow size */;
 
 		num_to_alloc = yyg->yy_buffer_stack_max + grow_size;
-		yyg->yy_buffer_stack = (struct yy_buffer_state**)cmFortran_yyrealloc
+		yyg->yy_buffer_stack = (struct yy_buffer_state**)yyrealloc
 								(yyg->yy_buffer_stack,
 								num_to_alloc * sizeof(struct yy_buffer_state*)
 								, yyscanner);
 		if ( ! yyg->yy_buffer_stack )
-			YY_FATAL_ERROR( "out of dynamic memory in cmFortran_yyensure_buffer_stack()" );
+			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
 
 		/* zero only the new slots.*/
 		memset(yyg->yy_buffer_stack + yyg->yy_buffer_stack_max, 0, grow_size * sizeof(struct yy_buffer_state*));
@@ -2058,7 +2167,7 @@ static void cmFortran_yyensure_buffer_stack (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  */
-YY_BUFFER_STATE cmFortran_yy_scan_buffer  (char * base, yy_size_t  size , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_buffer  (char * base, yy_size_t  size , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 
@@ -2068,11 +2177,11 @@ YY_BUFFER_STATE cmFortran_yy_scan_buffer  (char * base, yy_size_t  size , yyscan
 		/* They forgot to leave room for the EOB's. */
 		return NULL;
 
-	b = (YY_BUFFER_STATE) cmFortran_yyalloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+	b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) , yyscanner );
 	if ( ! b )
-		YY_FATAL_ERROR( "out of dynamic memory in cmFortran_yy_scan_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
 
-	b->yy_buf_size = size - 2;	/* "- 2" to take care of EOB's */
+	b->yy_buf_size = (int) (size - 2);	/* "- 2" to take care of EOB's */
 	b->yy_buf_pos = b->yy_ch_buf = base;
 	b->yy_is_our_buffer = 0;
 	b->yy_input_file = NULL;
@@ -2082,53 +2191,53 @@ YY_BUFFER_STATE cmFortran_yy_scan_buffer  (char * base, yy_size_t  size , yyscan
 	b->yy_fill_buffer = 0;
 	b->yy_buffer_status = YY_BUFFER_NEW;
 
-	cmFortran_yy_switch_to_buffer(b ,yyscanner );
+	yy_switch_to_buffer( b , yyscanner );
 
 	return b;
 }
 
-/** Setup the input buffer state to scan a string. The next call to cmFortran_yylex() will
+/** Setup the input buffer state to scan a string. The next call to yylex() will
  * scan from a @e copy of @a str.
  * @param yystr a NUL-terminated string to scan
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  * @note If you want to scan bytes that may contain NUL values, then use
- *       cmFortran_yy_scan_bytes() instead.
+ *       yy_scan_bytes() instead.
  */
-YY_BUFFER_STATE cmFortran_yy_scan_string (yyconst char * yystr , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_string (const char * yystr , yyscan_t yyscanner)
 {
 
-	return cmFortran_yy_scan_bytes(yystr,(int) strlen(yystr) ,yyscanner);
+	return yy_scan_bytes( yystr, (int) strlen(yystr) , yyscanner);
 }
 
-/** Setup the input buffer state to scan the given bytes. The next call to cmFortran_yylex() will
+/** Setup the input buffer state to scan the given bytes. The next call to yylex() will
  * scan from a @e copy of @a bytes.
  * @param yybytes the byte buffer to scan
  * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes.
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  */
-YY_BUFFER_STATE cmFortran_yy_scan_bytes  (yyconst char * yybytes, int  _yybytes_len , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_bytes  (const char * yybytes, int  _yybytes_len , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 	char *buf;
 	yy_size_t n;
-	yy_size_t i;
+	int i;
 
 	/* Get memory for full buffer, including space for trailing EOB's. */
-	n = (yy_size_t) _yybytes_len + 2;
-	buf = (char *) cmFortran_yyalloc(n ,yyscanner );
+	n = (yy_size_t) (_yybytes_len + 2);
+	buf = (char *) yyalloc( n , yyscanner );
 	if ( ! buf )
-		YY_FATAL_ERROR( "out of dynamic memory in cmFortran_yy_scan_bytes()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
 
-	for ( i = 0; i < (size_t)_yybytes_len; ++i )
+	for ( i = 0; i < _yybytes_len; ++i )
 		buf[i] = yybytes[i];
 
 	buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR;
 
-	b = cmFortran_yy_scan_buffer(buf,n ,yyscanner);
+	b = yy_scan_buffer( buf, n , yyscanner);
 	if ( ! b )
-		YY_FATAL_ERROR( "bad buffer in cmFortran_yy_scan_bytes()" );
+		YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
 
 	/* It's okay to grow etc. this buffer, and we should throw it
 	 * away when we're done.
@@ -2142,11 +2251,11 @@ YY_BUFFER_STATE cmFortran_yy_scan_bytes  (yyconst char * yybytes, int  _yybytes_
 #define YY_EXIT_FAILURE 2
 #endif
 
-static void yynoreturn yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
+static void yynoreturn yy_fatal_error (const char* msg , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
-	(void) fprintf( stderr, "%s\n", msg );
+	fprintf( stderr, "%s\n", msg );
 	exit( YY_EXIT_FAILURE );
 }
 
@@ -2172,7 +2281,7 @@ static void yynoreturn yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
 /** Get the user-defined data for this scanner.
  * @param yyscanner The scanner object.
  */
-YY_EXTRA_TYPE cmFortran_yyget_extra  (yyscan_t yyscanner)
+YY_EXTRA_TYPE yyget_extra  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyextra;
@@ -2181,7 +2290,7 @@ YY_EXTRA_TYPE cmFortran_yyget_extra  (yyscan_t yyscanner)
 /** Get the current line number.
  * @param yyscanner The scanner object.
  */
-int cmFortran_yyget_lineno  (yyscan_t yyscanner)
+int yyget_lineno  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -2194,7 +2303,7 @@ int cmFortran_yyget_lineno  (yyscan_t yyscanner)
 /** Get the current column number.
  * @param yyscanner The scanner object.
  */
-int cmFortran_yyget_column  (yyscan_t yyscanner)
+int yyget_column  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -2207,7 +2316,7 @@ int cmFortran_yyget_column  (yyscan_t yyscanner)
 /** Get the input stream.
  * @param yyscanner The scanner object.
  */
-FILE *cmFortran_yyget_in  (yyscan_t yyscanner)
+FILE *yyget_in  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyin;
@@ -2216,7 +2325,7 @@ FILE *cmFortran_yyget_in  (yyscan_t yyscanner)
 /** Get the output stream.
  * @param yyscanner The scanner object.
  */
-FILE *cmFortran_yyget_out  (yyscan_t yyscanner)
+FILE *yyget_out  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyout;
@@ -2225,7 +2334,7 @@ FILE *cmFortran_yyget_out  (yyscan_t yyscanner)
 /** Get the length of the current token.
  * @param yyscanner The scanner object.
  */
-int cmFortran_yyget_leng  (yyscan_t yyscanner)
+int yyget_leng  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyleng;
@@ -2235,7 +2344,7 @@ int cmFortran_yyget_leng  (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  */
 
-char *cmFortran_yyget_text  (yyscan_t yyscanner)
+char *yyget_text  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yytext;
@@ -2245,7 +2354,7 @@ char *cmFortran_yyget_text  (yyscan_t yyscanner)
  * @param user_defined The data to be associated with this scanner.
  * @param yyscanner The scanner object.
  */
-void cmFortran_yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
+void yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyextra = user_defined ;
@@ -2255,13 +2364,13 @@ void cmFortran_yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
  * @param _line_number line number
  * @param yyscanner The scanner object.
  */
-void cmFortran_yyset_lineno (int  _line_number , yyscan_t yyscanner)
+void yyset_lineno (int  _line_number , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
         /* lineno is only valid if an input buffer exists. */
         if (! YY_CURRENT_BUFFER )
-           YY_FATAL_ERROR( "cmFortran_yyset_lineno called with no buffer" );
+           YY_FATAL_ERROR( "yyset_lineno called with no buffer" );
 
     yylineno = _line_number;
 }
@@ -2270,13 +2379,13 @@ void cmFortran_yyset_lineno (int  _line_number , yyscan_t yyscanner)
  * @param _column_no column number
  * @param yyscanner The scanner object.
  */
-void cmFortran_yyset_column (int  _column_no , yyscan_t yyscanner)
+void yyset_column (int  _column_no , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
         /* column is only valid if an input buffer exists. */
         if (! YY_CURRENT_BUFFER )
-           YY_FATAL_ERROR( "cmFortran_yyset_column called with no buffer" );
+           YY_FATAL_ERROR( "yyset_column called with no buffer" );
 
     yycolumn = _column_no;
 }
@@ -2285,27 +2394,27 @@ void cmFortran_yyset_column (int  _column_no , yyscan_t yyscanner)
  * input buffer.
  * @param _in_str A readable stream.
  * @param yyscanner The scanner object.
- * @see cmFortran_yy_switch_to_buffer
+ * @see yy_switch_to_buffer
  */
-void cmFortran_yyset_in (FILE *  _in_str , yyscan_t yyscanner)
+void yyset_in (FILE *  _in_str , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyin = _in_str ;
 }
 
-void cmFortran_yyset_out (FILE *  _out_str , yyscan_t yyscanner)
+void yyset_out (FILE *  _out_str , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyout = _out_str ;
 }
 
-int cmFortran_yyget_debug  (yyscan_t yyscanner)
+int yyget_debug  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yy_flex_debug;
 }
 
-void cmFortran_yyset_debug (int  _bdebug , yyscan_t yyscanner)
+void yyset_debug (int  _bdebug , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yy_flex_debug = _bdebug ;
@@ -2315,20 +2424,18 @@ void cmFortran_yyset_debug (int  _bdebug , yyscan_t yyscanner)
 
 /* User-visible API */
 
-/* cmFortran_yylex_init is special because it creates the scanner itself, so it is
+/* yylex_init is special because it creates the scanner itself, so it is
  * the ONLY reentrant function that doesn't take the scanner as the last argument.
  * That's why we explicitly handle the declaration, instead of using our macros.
  */
-
-int cmFortran_yylex_init(yyscan_t* ptr_yy_globals)
-
+int yylex_init(yyscan_t* ptr_yy_globals)
 {
     if (ptr_yy_globals == NULL){
         errno = EINVAL;
         return 1;
     }
 
-    *ptr_yy_globals = (yyscan_t) cmFortran_yyalloc ( sizeof( struct yyguts_t ), NULL );
+    *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), NULL );
 
     if (*ptr_yy_globals == NULL){
         errno = ENOMEM;
@@ -2341,27 +2448,25 @@ int cmFortran_yylex_init(yyscan_t* ptr_yy_globals)
     return yy_init_globals ( *ptr_yy_globals );
 }
 
-/* cmFortran_yylex_init_extra has the same functionality as cmFortran_yylex_init, but follows the
+/* yylex_init_extra has the same functionality as yylex_init, but follows the
  * convention of taking the scanner as the last argument. Note however, that
  * this is a *pointer* to a scanner, as it will be allocated by this call (and
  * is the reason, too, why this function also must handle its own declaration).
- * The user defined value in the first argument will be available to cmFortran_yyalloc in
+ * The user defined value in the first argument will be available to yyalloc in
  * the yyextra field.
  */
-
-int cmFortran_yylex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_yy_globals )
-
+int yylex_init_extra( YY_EXTRA_TYPE yy_user_defined, yyscan_t* ptr_yy_globals )
 {
     struct yyguts_t dummy_yyguts;
 
-    cmFortran_yyset_extra (yy_user_defined, &dummy_yyguts);
+    yyset_extra (yy_user_defined, &dummy_yyguts);
 
     if (ptr_yy_globals == NULL){
         errno = EINVAL;
         return 1;
     }
 
-    *ptr_yy_globals = (yyscan_t) cmFortran_yyalloc ( sizeof( struct yyguts_t ), &dummy_yyguts );
+    *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), &dummy_yyguts );
 
     if (*ptr_yy_globals == NULL){
         errno = ENOMEM;
@@ -2372,7 +2477,7 @@ int cmFortran_yylex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_yy_gl
     yy_init_globals. Leave at 0x00 for releases. */
     memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t));
 
-    cmFortran_yyset_extra (yy_user_defined, *ptr_yy_globals);
+    yyset_extra (yy_user_defined, *ptr_yy_globals);
 
     return yy_init_globals ( *ptr_yy_globals );
 }
@@ -2381,7 +2486,7 @@ static int yy_init_globals (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     /* Initialization is the same as for the non-reentrant scanner.
-     * This function is called from cmFortran_yylex_destroy(), so don't allocate here.
+     * This function is called from yylex_destroy(), so don't allocate here.
      */
 
     yyg->yy_buffer_stack = NULL;
@@ -2405,37 +2510,37 @@ static int yy_init_globals (yyscan_t yyscanner)
 #endif
 
     /* For future reference: Set errno on error, since we are called by
-     * cmFortran_yylex_init()
+     * yylex_init()
      */
     return 0;
 }
 
-/* cmFortran_yylex_destroy is for both reentrant and non-reentrant scanners. */
-int cmFortran_yylex_destroy  (yyscan_t yyscanner)
+/* yylex_destroy is for both reentrant and non-reentrant scanners. */
+int yylex_destroy  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
     /* Pop the buffer stack, destroying each element. */
 	while(YY_CURRENT_BUFFER){
-		cmFortran_yy_delete_buffer(YY_CURRENT_BUFFER ,yyscanner );
+		yy_delete_buffer( YY_CURRENT_BUFFER , yyscanner );
 		YY_CURRENT_BUFFER_LVALUE = NULL;
-		cmFortran_yypop_buffer_state(yyscanner);
+		yypop_buffer_state(yyscanner);
 	}
 
 	/* Destroy the stack itself. */
-	cmFortran_yyfree(yyg->yy_buffer_stack ,yyscanner);
+	yyfree(yyg->yy_buffer_stack , yyscanner);
 	yyg->yy_buffer_stack = NULL;
 
     /* Destroy the start condition stack. */
-        cmFortran_yyfree(yyg->yy_start_stack ,yyscanner );
+        yyfree( yyg->yy_start_stack , yyscanner );
         yyg->yy_start_stack = NULL;
 
     /* Reset the globals. This is important in a non-reentrant scanner so the next time
-     * cmFortran_yylex() is called, initialization will occur. */
+     * yylex() is called, initialization will occur. */
     yy_init_globals( yyscanner);
 
     /* Destroy the main struct (reentrant only). */
-    cmFortran_yyfree ( yyscanner , yyscanner );
+    yyfree ( yyscanner , yyscanner );
     yyscanner = NULL;
     return 0;
 }
@@ -2445,7 +2550,7 @@ int cmFortran_yylex_destroy  (yyscan_t yyscanner)
  */
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char* s1, yyconst char * s2, int n , yyscan_t yyscanner)
+static void yy_flex_strncpy (char* s1, const char * s2, int n , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
@@ -2457,7 +2562,7 @@ static void yy_flex_strncpy (char* s1, yyconst char * s2, int n , yyscan_t yysca
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * s , yyscan_t yyscanner)
+static int yy_flex_strlen (const char * s , yyscan_t yyscanner)
 {
 	int n;
 	for ( n = 0; s[n]; ++n )
@@ -2467,14 +2572,14 @@ static int yy_flex_strlen (yyconst char * s , yyscan_t yyscanner)
 }
 #endif
 
-void *cmFortran_yyalloc (yy_size_t  size , yyscan_t yyscanner)
+void *yyalloc (yy_size_t  size , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
 	return malloc(size);
 }
 
-void *cmFortran_yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
+void *yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
@@ -2489,19 +2594,15 @@ void *cmFortran_yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
 	return realloc(ptr, size);
 }
 
-void cmFortran_yyfree (void * ptr , yyscan_t yyscanner)
+void yyfree (void * ptr , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
-	free( (char *) ptr );	/* see cmFortran_yyrealloc() for (char *) cast */
+	free( (char *) ptr );	/* see yyrealloc() for (char *) cast */
 }
 
 #define YYTABLES_NAME "yytables"
 
-#line 178 "cmFortranLexer.in.l"
-
-
-
 /*--------------------------------------------------------------------------*/
 YY_BUFFER_STATE cmFortranLexer_GetCurrentBuffer(yyscan_t yyscanner)
 {
diff --git a/Source/LexerParser/cmFortranLexer.h b/Source/LexerParser/cmFortranLexer.h
index ddda91965..7bb9b4434 100644
--- a/Source/LexerParser/cmFortranLexer.h
+++ b/Source/LexerParser/cmFortranLexer.h
@@ -2,10 +2,6 @@
 #define cmFortran_yyHEADER_H 1
 #define cmFortran_yyIN_HEADER 1
 
-#line 6 "cmFortranLexer.h"
-
-#line 8 "cmFortranLexer.h"
-
 #define FLEXINT_H 1
 #define  YY_INT_ALIGNED short int
 
@@ -14,11 +10,221 @@
 #define FLEX_SCANNER
 #define YY_FLEX_MAJOR_VERSION 2
 #define YY_FLEX_MINOR_VERSION 6
-#define YY_FLEX_SUBMINOR_VERSION 1
+#define YY_FLEX_SUBMINOR_VERSION 4
 #if YY_FLEX_SUBMINOR_VERSION > 0
 #define FLEX_BETA
 #endif
 
+#ifdef yy_create_buffer
+#define cmFortran_yy_create_buffer_ALREADY_DEFINED
+#else
+#define yy_create_buffer cmFortran_yy_create_buffer
+#endif
+
+#ifdef yy_delete_buffer
+#define cmFortran_yy_delete_buffer_ALREADY_DEFINED
+#else
+#define yy_delete_buffer cmFortran_yy_delete_buffer
+#endif
+
+#ifdef yy_scan_buffer
+#define cmFortran_yy_scan_buffer_ALREADY_DEFINED
+#else
+#define yy_scan_buffer cmFortran_yy_scan_buffer
+#endif
+
+#ifdef yy_scan_string
+#define cmFortran_yy_scan_string_ALREADY_DEFINED
+#else
+#define yy_scan_string cmFortran_yy_scan_string
+#endif
+
+#ifdef yy_scan_bytes
+#define cmFortran_yy_scan_bytes_ALREADY_DEFINED
+#else
+#define yy_scan_bytes cmFortran_yy_scan_bytes
+#endif
+
+#ifdef yy_init_buffer
+#define cmFortran_yy_init_buffer_ALREADY_DEFINED
+#else
+#define yy_init_buffer cmFortran_yy_init_buffer
+#endif
+
+#ifdef yy_flush_buffer
+#define cmFortran_yy_flush_buffer_ALREADY_DEFINED
+#else
+#define yy_flush_buffer cmFortran_yy_flush_buffer
+#endif
+
+#ifdef yy_load_buffer_state
+#define cmFortran_yy_load_buffer_state_ALREADY_DEFINED
+#else
+#define yy_load_buffer_state cmFortran_yy_load_buffer_state
+#endif
+
+#ifdef yy_switch_to_buffer
+#define cmFortran_yy_switch_to_buffer_ALREADY_DEFINED
+#else
+#define yy_switch_to_buffer cmFortran_yy_switch_to_buffer
+#endif
+
+#ifdef yypush_buffer_state
+#define cmFortran_yypush_buffer_state_ALREADY_DEFINED
+#else
+#define yypush_buffer_state cmFortran_yypush_buffer_state
+#endif
+
+#ifdef yypop_buffer_state
+#define cmFortran_yypop_buffer_state_ALREADY_DEFINED
+#else
+#define yypop_buffer_state cmFortran_yypop_buffer_state
+#endif
+
+#ifdef yyensure_buffer_stack
+#define cmFortran_yyensure_buffer_stack_ALREADY_DEFINED
+#else
+#define yyensure_buffer_stack cmFortran_yyensure_buffer_stack
+#endif
+
+#ifdef yylex
+#define cmFortran_yylex_ALREADY_DEFINED
+#else
+#define yylex cmFortran_yylex
+#endif
+
+#ifdef yyrestart
+#define cmFortran_yyrestart_ALREADY_DEFINED
+#else
+#define yyrestart cmFortran_yyrestart
+#endif
+
+#ifdef yylex_init
+#define cmFortran_yylex_init_ALREADY_DEFINED
+#else
+#define yylex_init cmFortran_yylex_init
+#endif
+
+#ifdef yylex_init_extra
+#define cmFortran_yylex_init_extra_ALREADY_DEFINED
+#else
+#define yylex_init_extra cmFortran_yylex_init_extra
+#endif
+
+#ifdef yylex_destroy
+#define cmFortran_yylex_destroy_ALREADY_DEFINED
+#else
+#define yylex_destroy cmFortran_yylex_destroy
+#endif
+
+#ifdef yyget_debug
+#define cmFortran_yyget_debug_ALREADY_DEFINED
+#else
+#define yyget_debug cmFortran_yyget_debug
+#endif
+
+#ifdef yyset_debug
+#define cmFortran_yyset_debug_ALREADY_DEFINED
+#else
+#define yyset_debug cmFortran_yyset_debug
+#endif
+
+#ifdef yyget_extra
+#define cmFortran_yyget_extra_ALREADY_DEFINED
+#else
+#define yyget_extra cmFortran_yyget_extra
+#endif
+
+#ifdef yyset_extra
+#define cmFortran_yyset_extra_ALREADY_DEFINED
+#else
+#define yyset_extra cmFortran_yyset_extra
+#endif
+
+#ifdef yyget_in
+#define cmFortran_yyget_in_ALREADY_DEFINED
+#else
+#define yyget_in cmFortran_yyget_in
+#endif
+
+#ifdef yyset_in
+#define cmFortran_yyset_in_ALREADY_DEFINED
+#else
+#define yyset_in cmFortran_yyset_in
+#endif
+
+#ifdef yyget_out
+#define cmFortran_yyget_out_ALREADY_DEFINED
+#else
+#define yyget_out cmFortran_yyget_out
+#endif
+
+#ifdef yyset_out
+#define cmFortran_yyset_out_ALREADY_DEFINED
+#else
+#define yyset_out cmFortran_yyset_out
+#endif
+
+#ifdef yyget_leng
+#define cmFortran_yyget_leng_ALREADY_DEFINED
+#else
+#define yyget_leng cmFortran_yyget_leng
+#endif
+
+#ifdef yyget_text
+#define cmFortran_yyget_text_ALREADY_DEFINED
+#else
+#define yyget_text cmFortran_yyget_text
+#endif
+
+#ifdef yyget_lineno
+#define cmFortran_yyget_lineno_ALREADY_DEFINED
+#else
+#define yyget_lineno cmFortran_yyget_lineno
+#endif
+
+#ifdef yyset_lineno
+#define cmFortran_yyset_lineno_ALREADY_DEFINED
+#else
+#define yyset_lineno cmFortran_yyset_lineno
+#endif
+
+#ifdef yyget_column
+#define cmFortran_yyget_column_ALREADY_DEFINED
+#else
+#define yyget_column cmFortran_yyget_column
+#endif
+
+#ifdef yyset_column
+#define cmFortran_yyset_column_ALREADY_DEFINED
+#else
+#define yyset_column cmFortran_yyset_column
+#endif
+
+#ifdef yywrap
+#define cmFortran_yywrap_ALREADY_DEFINED
+#else
+#define yywrap cmFortran_yywrap
+#endif
+
+#ifdef yyalloc
+#define cmFortran_yyalloc_ALREADY_DEFINED
+#else
+#define yyalloc cmFortran_yyalloc
+#endif
+
+#ifdef yyrealloc
+#define cmFortran_yyrealloc_ALREADY_DEFINED
+#else
+#define yyrealloc cmFortran_yyrealloc
+#endif
+
+#ifdef yyfree
+#define cmFortran_yyfree_ALREADY_DEFINED
+#else
+#define yyfree cmFortran_yyfree
+#endif
+
 /* First, we deal with  platform-specific or compiler-specific issues. */
 
 /* begin standard C headers. */
@@ -89,10 +295,16 @@ typedef unsigned int flex_uint32_t;
 #define UINT32_MAX             (4294967295U)
 #endif
 
+#ifndef SIZE_MAX
+#define SIZE_MAX               (~(size_t)0)
+#endif
+
 #endif /* ! C99 */
 
 #endif /* ! FLEXINT_H */
 
+/* begin standard C++ headers. */
+
 /* TODO: this is always defined, so inline it */
 #define yyconst const
 
@@ -193,21 +405,21 @@ struct yy_buffer_state
 	};
 #endif /* !YY_STRUCT_YY_BUFFER_STATE */
 
-void cmFortran_yyrestart (FILE *input_file ,yyscan_t yyscanner );
-void cmFortran_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmFortran_yy_create_buffer (FILE *file,int size ,yyscan_t yyscanner );
-void cmFortran_yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmFortran_yy_flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmFortran_yypush_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-void cmFortran_yypop_buffer_state (yyscan_t yyscanner );
+void yyrestart ( FILE *input_file , yyscan_t yyscanner );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size , yyscan_t yyscanner );
+void yy_delete_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yy_flush_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+void yypop_buffer_state ( yyscan_t yyscanner );
 
-YY_BUFFER_STATE cmFortran_yy_scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmFortran_yy_scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmFortran_yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len , yyscan_t yyscanner );
 
-void *cmFortran_yyalloc (yy_size_t ,yyscan_t yyscanner );
-void *cmFortran_yyrealloc (void *,yy_size_t ,yyscan_t yyscanner );
-void cmFortran_yyfree (void * ,yyscan_t yyscanner );
+void *yyalloc ( yy_size_t , yyscan_t yyscanner );
+void *yyrealloc ( void *, yy_size_t , yyscan_t yyscanner );
+void yyfree ( void * , yyscan_t yyscanner );
 
 /* Begin user sect3 */
 
@@ -229,42 +441,42 @@ void cmFortran_yyfree (void * ,yyscan_t yyscanner );
 #define YY_EXTRA_TYPE void *
 #endif
 
-int cmFortran_yylex_init (yyscan_t* scanner);
+int yylex_init (yyscan_t* scanner);
 
-int cmFortran_yylex_init_extra (YY_EXTRA_TYPE user_defined,yyscan_t* scanner);
+int yylex_init_extra ( YY_EXTRA_TYPE user_defined, yyscan_t* scanner);
 
 /* Accessor methods to globals.
    These are made visible to non-reentrant scanners for convenience. */
 
-int cmFortran_yylex_destroy (yyscan_t yyscanner );
+int yylex_destroy ( yyscan_t yyscanner );
 
-int cmFortran_yyget_debug (yyscan_t yyscanner );
+int yyget_debug ( yyscan_t yyscanner );
 
-void cmFortran_yyset_debug (int debug_flag ,yyscan_t yyscanner );
+void yyset_debug ( int debug_flag , yyscan_t yyscanner );
 
-YY_EXTRA_TYPE cmFortran_yyget_extra (yyscan_t yyscanner );
+YY_EXTRA_TYPE yyget_extra ( yyscan_t yyscanner );
 
-void cmFortran_yyset_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner );
+void yyset_extra ( YY_EXTRA_TYPE user_defined , yyscan_t yyscanner );
 
-FILE *cmFortran_yyget_in (yyscan_t yyscanner );
+FILE *yyget_in ( yyscan_t yyscanner );
 
-void cmFortran_yyset_in  (FILE * _in_str ,yyscan_t yyscanner );
+void yyset_in  ( FILE * _in_str , yyscan_t yyscanner );
 
-FILE *cmFortran_yyget_out (yyscan_t yyscanner );
+FILE *yyget_out ( yyscan_t yyscanner );
 
-void cmFortran_yyset_out  (FILE * _out_str ,yyscan_t yyscanner );
+void yyset_out  ( FILE * _out_str , yyscan_t yyscanner );
 
-			int cmFortran_yyget_leng (yyscan_t yyscanner );
+			int yyget_leng ( yyscan_t yyscanner );
 
-char *cmFortran_yyget_text (yyscan_t yyscanner );
+char *yyget_text ( yyscan_t yyscanner );
 
-int cmFortran_yyget_lineno (yyscan_t yyscanner );
+int yyget_lineno ( yyscan_t yyscanner );
 
-void cmFortran_yyset_lineno (int _line_number ,yyscan_t yyscanner );
+void yyset_lineno ( int _line_number , yyscan_t yyscanner );
 
-int cmFortran_yyget_column  (yyscan_t yyscanner );
+int yyget_column  ( yyscan_t yyscanner );
 
-void cmFortran_yyset_column (int _column_no ,yyscan_t yyscanner );
+void yyset_column ( int _column_no , yyscan_t yyscanner );
 
 /* Macros after this point can all be overridden by user definitions in
  * section 1.
@@ -272,18 +484,18 @@ void cmFortran_yyset_column (int _column_no ,yyscan_t yyscanner );
 
 #ifndef YY_SKIP_YYWRAP
 #ifdef __cplusplus
-extern "C" int cmFortran_yywrap (yyscan_t yyscanner );
+extern "C" int yywrap ( yyscan_t yyscanner );
 #else
-extern int cmFortran_yywrap (yyscan_t yyscanner );
+extern int yywrap ( yyscan_t yyscanner );
 #endif
 #endif
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char *,yyconst char *,int ,yyscan_t yyscanner);
+static void yy_flex_strncpy ( char *, const char *, int , yyscan_t yyscanner);
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
+static int yy_flex_strlen ( const char * , yyscan_t yyscanner);
 #endif
 
 #ifndef YY_NO_INPUT
@@ -311,9 +523,9 @@ static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
 #ifndef YY_DECL
 #define YY_DECL_IS_OURS 1
 
-extern int cmFortran_yylex (yyscan_t yyscanner);
+extern int yylex (yyscan_t yyscanner);
 
-#define YY_DECL int cmFortran_yylex (yyscan_t yyscanner)
+#define YY_DECL int yylex (yyscan_t yyscanner)
 #endif /* !YY_DECL */
 
 /* yy_get_previous_state - get the state just before the EOB char was reached */
@@ -330,9 +542,150 @@ extern int cmFortran_yylex (yyscan_t yyscanner);
 #undef YY_DECL
 #endif
 
-#line 178 "cmFortranLexer.in.l"
-
+#ifndef cmFortran_yy_create_buffer_ALREADY_DEFINED
+#undef yy_create_buffer
+#endif
+#ifndef cmFortran_yy_delete_buffer_ALREADY_DEFINED
+#undef yy_delete_buffer
+#endif
+#ifndef cmFortran_yy_scan_buffer_ALREADY_DEFINED
+#undef yy_scan_buffer
+#endif
+#ifndef cmFortran_yy_scan_string_ALREADY_DEFINED
+#undef yy_scan_string
+#endif
+#ifndef cmFortran_yy_scan_bytes_ALREADY_DEFINED
+#undef yy_scan_bytes
+#endif
+#ifndef cmFortran_yy_init_buffer_ALREADY_DEFINED
+#undef yy_init_buffer
+#endif
+#ifndef cmFortran_yy_flush_buffer_ALREADY_DEFINED
+#undef yy_flush_buffer
+#endif
+#ifndef cmFortran_yy_load_buffer_state_ALREADY_DEFINED
+#undef yy_load_buffer_state
+#endif
+#ifndef cmFortran_yy_switch_to_buffer_ALREADY_DEFINED
+#undef yy_switch_to_buffer
+#endif
+#ifndef cmFortran_yypush_buffer_state_ALREADY_DEFINED
+#undef yypush_buffer_state
+#endif
+#ifndef cmFortran_yypop_buffer_state_ALREADY_DEFINED
+#undef yypop_buffer_state
+#endif
+#ifndef cmFortran_yyensure_buffer_stack_ALREADY_DEFINED
+#undef yyensure_buffer_stack
+#endif
+#ifndef cmFortran_yylex_ALREADY_DEFINED
+#undef yylex
+#endif
+#ifndef cmFortran_yyrestart_ALREADY_DEFINED
+#undef yyrestart
+#endif
+#ifndef cmFortran_yylex_init_ALREADY_DEFINED
+#undef yylex_init
+#endif
+#ifndef cmFortran_yylex_init_extra_ALREADY_DEFINED
+#undef yylex_init_extra
+#endif
+#ifndef cmFortran_yylex_destroy_ALREADY_DEFINED
+#undef yylex_destroy
+#endif
+#ifndef cmFortran_yyget_debug_ALREADY_DEFINED
+#undef yyget_debug
+#endif
+#ifndef cmFortran_yyset_debug_ALREADY_DEFINED
+#undef yyset_debug
+#endif
+#ifndef cmFortran_yyget_extra_ALREADY_DEFINED
+#undef yyget_extra
+#endif
+#ifndef cmFortran_yyset_extra_ALREADY_DEFINED
+#undef yyset_extra
+#endif
+#ifndef cmFortran_yyget_in_ALREADY_DEFINED
+#undef yyget_in
+#endif
+#ifndef cmFortran_yyset_in_ALREADY_DEFINED
+#undef yyset_in
+#endif
+#ifndef cmFortran_yyget_out_ALREADY_DEFINED
+#undef yyget_out
+#endif
+#ifndef cmFortran_yyset_out_ALREADY_DEFINED
+#undef yyset_out
+#endif
+#ifndef cmFortran_yyget_leng_ALREADY_DEFINED
+#undef yyget_leng
+#endif
+#ifndef cmFortran_yyget_text_ALREADY_DEFINED
+#undef yyget_text
+#endif
+#ifndef cmFortran_yyget_lineno_ALREADY_DEFINED
+#undef yyget_lineno
+#endif
+#ifndef cmFortran_yyset_lineno_ALREADY_DEFINED
+#undef yyset_lineno
+#endif
+#ifndef cmFortran_yyget_column_ALREADY_DEFINED
+#undef yyget_column
+#endif
+#ifndef cmFortran_yyset_column_ALREADY_DEFINED
+#undef yyset_column
+#endif
+#ifndef cmFortran_yywrap_ALREADY_DEFINED
+#undef yywrap
+#endif
+#ifndef cmFortran_yyget_lval_ALREADY_DEFINED
+#undef yyget_lval
+#endif
+#ifndef cmFortran_yyset_lval_ALREADY_DEFINED
+#undef yyset_lval
+#endif
+#ifndef cmFortran_yyget_lloc_ALREADY_DEFINED
+#undef yyget_lloc
+#endif
+#ifndef cmFortran_yyset_lloc_ALREADY_DEFINED
+#undef yyset_lloc
+#endif
+#ifndef cmFortran_yyalloc_ALREADY_DEFINED
+#undef yyalloc
+#endif
+#ifndef cmFortran_yyrealloc_ALREADY_DEFINED
+#undef yyrealloc
+#endif
+#ifndef cmFortran_yyfree_ALREADY_DEFINED
+#undef yyfree
+#endif
+#ifndef cmFortran_yytext_ALREADY_DEFINED
+#undef yytext
+#endif
+#ifndef cmFortran_yyleng_ALREADY_DEFINED
+#undef yyleng
+#endif
+#ifndef cmFortran_yyin_ALREADY_DEFINED
+#undef yyin
+#endif
+#ifndef cmFortran_yyout_ALREADY_DEFINED
+#undef yyout
+#endif
+#ifndef cmFortran_yy_flex_debug_ALREADY_DEFINED
+#undef yy_flex_debug
+#endif
+#ifndef cmFortran_yylineno_ALREADY_DEFINED
+#undef yylineno
+#endif
+#ifndef cmFortran_yytables_fload_ALREADY_DEFINED
+#undef yytables_fload
+#endif
+#ifndef cmFortran_yytables_destroy_ALREADY_DEFINED
+#undef yytables_destroy
+#endif
+#ifndef cmFortran_yyTABLES_NAME_ALREADY_DEFINED
+#undef yyTABLES_NAME
+#endif
 
-#line 337 "cmFortranLexer.h"
 #undef cmFortran_yyIN_HEADER
 #endif /* cmFortran_yyHEADER_H */
diff --git a/Source/LexerParser/cmFortranLexer.in.l b/Source/LexerParser/cmFortranLexer.in.l
index 112121037..9acba4c1f 100644
--- a/Source/LexerParser/cmFortranLexer.in.l
+++ b/Source/LexerParser/cmFortranLexer.in.l
@@ -17,14 +17,12 @@ This file must be translated to C++ and modified to build everywhere.
 
 Run flex >= 2.6 like this:
 
-  flex -i --nounistd -DFLEXINT_H --prefix=cmFortran_yy --header-file=cmFortranLexer.h -ocmFortranLexer.cxx cmFortranLexer.in.l
+  flex -i --nounistd -DFLEXINT_H --noline --header-file=cmFortranLexer.h -ocmFortranLexer.cxx cmFortranLexer.in.l
 
 Modify cmFortranLexer.cxx:
-  - remove trailing whitespace: sed -i 's/\s*$//' cmFortranLexer.h cmFortranLexer.cxx
-  - remove blank lines at end of file
-  - #include "cmStandardLexer.h" at the top
-  - add cast in yy_scan_bytes for loop condition of _yybytes_len to size_t
-
+  - remove trailing whitespace:              sed -i 's/\s*$//' cmFortranLexer.h cmFortranLexer.cxx
+  - remove blank lines at end of file:       sed -i '${/^$/d;}' cmFortranLexer.h cmFortranLexer.cxx
+  - #include "cmStandardLexer.h" at the top: sed -i '1i#include "cmStandardLexer.h"' cmFortranLexer.cxx
 */
 
 /* IWYU pragma: no_forward_declare yyguts_t */
@@ -45,6 +43,7 @@ Modify cmFortranLexer.cxx:
 /*--------------------------------------------------------------------------*/
 %}
 
+%option prefix="cmFortran_yy"
 
 %option reentrant
 %option noyywrap
diff --git a/Source/LexerParser/cmListFileLexer.c b/Source/LexerParser/cmListFileLexer.c
index 3dd3b85b9..c6f524c6b 100644
--- a/Source/LexerParser/cmListFileLexer.c
+++ b/Source/LexerParser/cmListFileLexer.c
@@ -1,7 +1,4 @@
 #include "cmStandardLexer.h"
-#line 2 "cmListFileLexer.c"
-
-#line 4 "cmListFileLexer.c"
 
 #define FLEXINT_H 1
 #define  YY_INT_ALIGNED short int
@@ -11,11 +8,221 @@
 #define FLEX_SCANNER
 #define YY_FLEX_MAJOR_VERSION 2
 #define YY_FLEX_MINOR_VERSION 6
-#define YY_FLEX_SUBMINOR_VERSION 1
+#define YY_FLEX_SUBMINOR_VERSION 4
 #if YY_FLEX_SUBMINOR_VERSION > 0
 #define FLEX_BETA
 #endif
 
+#ifdef yy_create_buffer
+#define cmListFileLexer_yy_create_buffer_ALREADY_DEFINED
+#else
+#define yy_create_buffer cmListFileLexer_yy_create_buffer
+#endif
+
+#ifdef yy_delete_buffer
+#define cmListFileLexer_yy_delete_buffer_ALREADY_DEFINED
+#else
+#define yy_delete_buffer cmListFileLexer_yy_delete_buffer
+#endif
+
+#ifdef yy_scan_buffer
+#define cmListFileLexer_yy_scan_buffer_ALREADY_DEFINED
+#else
+#define yy_scan_buffer cmListFileLexer_yy_scan_buffer
+#endif
+
+#ifdef yy_scan_string
+#define cmListFileLexer_yy_scan_string_ALREADY_DEFINED
+#else
+#define yy_scan_string cmListFileLexer_yy_scan_string
+#endif
+
+#ifdef yy_scan_bytes
+#define cmListFileLexer_yy_scan_bytes_ALREADY_DEFINED
+#else
+#define yy_scan_bytes cmListFileLexer_yy_scan_bytes
+#endif
+
+#ifdef yy_init_buffer
+#define cmListFileLexer_yy_init_buffer_ALREADY_DEFINED
+#else
+#define yy_init_buffer cmListFileLexer_yy_init_buffer
+#endif
+
+#ifdef yy_flush_buffer
+#define cmListFileLexer_yy_flush_buffer_ALREADY_DEFINED
+#else
+#define yy_flush_buffer cmListFileLexer_yy_flush_buffer
+#endif
+
+#ifdef yy_load_buffer_state
+#define cmListFileLexer_yy_load_buffer_state_ALREADY_DEFINED
+#else
+#define yy_load_buffer_state cmListFileLexer_yy_load_buffer_state
+#endif
+
+#ifdef yy_switch_to_buffer
+#define cmListFileLexer_yy_switch_to_buffer_ALREADY_DEFINED
+#else
+#define yy_switch_to_buffer cmListFileLexer_yy_switch_to_buffer
+#endif
+
+#ifdef yypush_buffer_state
+#define cmListFileLexer_yypush_buffer_state_ALREADY_DEFINED
+#else
+#define yypush_buffer_state cmListFileLexer_yypush_buffer_state
+#endif
+
+#ifdef yypop_buffer_state
+#define cmListFileLexer_yypop_buffer_state_ALREADY_DEFINED
+#else
+#define yypop_buffer_state cmListFileLexer_yypop_buffer_state
+#endif
+
+#ifdef yyensure_buffer_stack
+#define cmListFileLexer_yyensure_buffer_stack_ALREADY_DEFINED
+#else
+#define yyensure_buffer_stack cmListFileLexer_yyensure_buffer_stack
+#endif
+
+#ifdef yylex
+#define cmListFileLexer_yylex_ALREADY_DEFINED
+#else
+#define yylex cmListFileLexer_yylex
+#endif
+
+#ifdef yyrestart
+#define cmListFileLexer_yyrestart_ALREADY_DEFINED
+#else
+#define yyrestart cmListFileLexer_yyrestart
+#endif
+
+#ifdef yylex_init
+#define cmListFileLexer_yylex_init_ALREADY_DEFINED
+#else
+#define yylex_init cmListFileLexer_yylex_init
+#endif
+
+#ifdef yylex_init_extra
+#define cmListFileLexer_yylex_init_extra_ALREADY_DEFINED
+#else
+#define yylex_init_extra cmListFileLexer_yylex_init_extra
+#endif
+
+#ifdef yylex_destroy
+#define cmListFileLexer_yylex_destroy_ALREADY_DEFINED
+#else
+#define yylex_destroy cmListFileLexer_yylex_destroy
+#endif
+
+#ifdef yyget_debug
+#define cmListFileLexer_yyget_debug_ALREADY_DEFINED
+#else
+#define yyget_debug cmListFileLexer_yyget_debug
+#endif
+
+#ifdef yyset_debug
+#define cmListFileLexer_yyset_debug_ALREADY_DEFINED
+#else
+#define yyset_debug cmListFileLexer_yyset_debug
+#endif
+
+#ifdef yyget_extra
+#define cmListFileLexer_yyget_extra_ALREADY_DEFINED
+#else
+#define yyget_extra cmListFileLexer_yyget_extra
+#endif
+
+#ifdef yyset_extra
+#define cmListFileLexer_yyset_extra_ALREADY_DEFINED
+#else
+#define yyset_extra cmListFileLexer_yyset_extra
+#endif
+
+#ifdef yyget_in
+#define cmListFileLexer_yyget_in_ALREADY_DEFINED
+#else
+#define yyget_in cmListFileLexer_yyget_in
+#endif
+
+#ifdef yyset_in
+#define cmListFileLexer_yyset_in_ALREADY_DEFINED
+#else
+#define yyset_in cmListFileLexer_yyset_in
+#endif
+
+#ifdef yyget_out
+#define cmListFileLexer_yyget_out_ALREADY_DEFINED
+#else
+#define yyget_out cmListFileLexer_yyget_out
+#endif
+
+#ifdef yyset_out
+#define cmListFileLexer_yyset_out_ALREADY_DEFINED
+#else
+#define yyset_out cmListFileLexer_yyset_out
+#endif
+
+#ifdef yyget_leng
+#define cmListFileLexer_yyget_leng_ALREADY_DEFINED
+#else
+#define yyget_leng cmListFileLexer_yyget_leng
+#endif
+
+#ifdef yyget_text
+#define cmListFileLexer_yyget_text_ALREADY_DEFINED
+#else
+#define yyget_text cmListFileLexer_yyget_text
+#endif
+
+#ifdef yyget_lineno
+#define cmListFileLexer_yyget_lineno_ALREADY_DEFINED
+#else
+#define yyget_lineno cmListFileLexer_yyget_lineno
+#endif
+
+#ifdef yyset_lineno
+#define cmListFileLexer_yyset_lineno_ALREADY_DEFINED
+#else
+#define yyset_lineno cmListFileLexer_yyset_lineno
+#endif
+
+#ifdef yyget_column
+#define cmListFileLexer_yyget_column_ALREADY_DEFINED
+#else
+#define yyget_column cmListFileLexer_yyget_column
+#endif
+
+#ifdef yyset_column
+#define cmListFileLexer_yyset_column_ALREADY_DEFINED
+#else
+#define yyset_column cmListFileLexer_yyset_column
+#endif
+
+#ifdef yywrap
+#define cmListFileLexer_yywrap_ALREADY_DEFINED
+#else
+#define yywrap cmListFileLexer_yywrap
+#endif
+
+#ifdef yyalloc
+#define cmListFileLexer_yyalloc_ALREADY_DEFINED
+#else
+#define yyalloc cmListFileLexer_yyalloc
+#endif
+
+#ifdef yyrealloc
+#define cmListFileLexer_yyrealloc_ALREADY_DEFINED
+#else
+#define yyrealloc cmListFileLexer_yyrealloc
+#endif
+
+#ifdef yyfree
+#define cmListFileLexer_yyfree_ALREADY_DEFINED
+#else
+#define yyfree cmListFileLexer_yyfree
+#endif
+
 /* First, we deal with  platform-specific or compiler-specific issues. */
 
 /* begin standard C headers. */
@@ -86,10 +293,16 @@ typedef unsigned int flex_uint32_t;
 #define UINT32_MAX             (4294967295U)
 #endif
 
+#ifndef SIZE_MAX
+#define SIZE_MAX               (~(size_t)0)
+#endif
+
 #endif /* ! C99 */
 
 #endif /* ! FLEXINT_H */
 
+/* begin standard C++ headers. */
+
 /* TODO: this is always defined, so inline it */
 #define yyconst const
 
@@ -102,12 +315,10 @@ typedef unsigned int flex_uint32_t;
 /* Returned upon end-of-file. */
 #define YY_NULL 0
 
-/* Promotes a possibly negative, possibly signed char to an unsigned
- * integer for use as an array index.  If the signed char is negative,
- * we want to instead treat it as an 8-bit unsigned char, hence the
- * double cast.
+/* Promotes a possibly negative, possibly signed char to an
+ *   integer in range [0..255] for use as an array index.
  */
-#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
+#define YY_SC_TO_UI(c) ((YY_CHAR) (c))
 
 /* An opaque pointer. */
 #ifndef YY_TYPEDEF_YY_SCANNER_T
@@ -131,20 +342,16 @@ typedef void* yyscan_t;
  * definition of BEGIN.
  */
 #define BEGIN yyg->yy_start = 1 + 2 *
-
 /* Translate the current start state into a value that can be later handed
  * to BEGIN to return to the state.  The YYSTATE alias is for lex
  * compatibility.
  */
 #define YY_START ((yyg->yy_start - 1) / 2)
 #define YYSTATE YY_START
-
 /* Action number for EOF rule of a given start state. */
 #define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
-
 /* Special action meaning "start processing a new file". */
-#define YY_NEW_FILE cmListFileLexer_yyrestart(yyin ,yyscanner )
-
+#define YY_NEW_FILE yyrestart( yyin , yyscanner )
 #define YY_END_OF_BUFFER_CHAR 0
 
 /* Size of default input buffer. */
@@ -180,7 +387,7 @@ typedef size_t yy_size_t;
 
     /* Note: We specifically omit the test for yy_rule_can_match_eol because it requires
      *       access to the local variable yy_act. Since yyless() is a macro, it would break
-     *       existing scanners that call yyless() from OUTSIDE cmListFileLexer_yylex.
+     *       existing scanners that call yyless() from OUTSIDE yylex.
      *       One obvious solution it to make yy_act a global. I tried that, and saw
      *       a 5% performance hit in a non-yylineno scanner, because yy_act is
      *       normally declared as a register variable-- so it is not worth it.
@@ -213,7 +420,6 @@ typedef size_t yy_size_t;
 		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
 		} \
 	while ( 0 )
-
 #define unput(c) yyunput( c, yyg->yytext_ptr , yyscanner )
 
 #ifndef YY_STRUCT_YY_BUFFER_STATE
@@ -273,7 +479,7 @@ struct yy_buffer_state
 	 * possible backing-up.
 	 *
 	 * When we actually see the EOF, we change the status to "new"
-	 * (via cmListFileLexer_yyrestart()), so that the user can continue scanning by
+	 * (via yyrestart()), so that the user can continue scanning by
 	 * just pointing yyin at a new input file.
 	 */
 #define YY_BUFFER_EOF_PENDING 2
@@ -290,73 +496,67 @@ struct yy_buffer_state
 #define YY_CURRENT_BUFFER ( yyg->yy_buffer_stack \
                           ? yyg->yy_buffer_stack[yyg->yy_buffer_stack_top] \
                           : NULL)
-
 /* Same as previous macro, but useful when we know that the buffer stack is not
  * NULL or when we need an lvalue. For internal use only.
  */
 #define YY_CURRENT_BUFFER_LVALUE yyg->yy_buffer_stack[yyg->yy_buffer_stack_top]
 
-void cmListFileLexer_yyrestart (FILE *input_file ,yyscan_t yyscanner );
-void cmListFileLexer_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmListFileLexer_yy_create_buffer (FILE *file,int size ,yyscan_t yyscanner );
-void cmListFileLexer_yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmListFileLexer_yy_flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
-void cmListFileLexer_yypush_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
-void cmListFileLexer_yypop_buffer_state (yyscan_t yyscanner );
+void yyrestart ( FILE *input_file , yyscan_t yyscanner );
+void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size , yyscan_t yyscanner );
+void yy_delete_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yy_flush_buffer ( YY_BUFFER_STATE b , yyscan_t yyscanner );
+void yypush_buffer_state ( YY_BUFFER_STATE new_buffer , yyscan_t yyscanner );
+void yypop_buffer_state ( yyscan_t yyscanner );
 
-static void cmListFileLexer_yyensure_buffer_stack (yyscan_t yyscanner );
-static void cmListFileLexer_yy_load_buffer_state (yyscan_t yyscanner );
-static void cmListFileLexer_yy_init_buffer (YY_BUFFER_STATE b,FILE *file ,yyscan_t yyscanner );
+static void yyensure_buffer_stack ( yyscan_t yyscanner );
+static void yy_load_buffer_state ( yyscan_t yyscanner );
+static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file , yyscan_t yyscanner );
+#define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER , yyscanner)
 
-#define YY_FLUSH_BUFFER cmListFileLexer_yy_flush_buffer(YY_CURRENT_BUFFER ,yyscanner)
+YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_string ( const char *yy_str , yyscan_t yyscanner );
+YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len , yyscan_t yyscanner );
 
-YY_BUFFER_STATE cmListFileLexer_yy_scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmListFileLexer_yy_scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
-YY_BUFFER_STATE cmListFileLexer_yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
-
-void *cmListFileLexer_yyalloc (yy_size_t ,yyscan_t yyscanner );
-void *cmListFileLexer_yyrealloc (void *,yy_size_t ,yyscan_t yyscanner );
-void cmListFileLexer_yyfree (void * ,yyscan_t yyscanner );
-
-#define yy_new_buffer cmListFileLexer_yy_create_buffer
+void *yyalloc ( yy_size_t , yyscan_t yyscanner );
+void *yyrealloc ( void *, yy_size_t , yyscan_t yyscanner );
+void yyfree ( void * , yyscan_t yyscanner );
 
+#define yy_new_buffer yy_create_buffer
 #define yy_set_interactive(is_interactive) \
 	{ \
 	if ( ! YY_CURRENT_BUFFER ){ \
-        cmListFileLexer_yyensure_buffer_stack (yyscanner); \
+        yyensure_buffer_stack (yyscanner); \
 		YY_CURRENT_BUFFER_LVALUE =    \
-            cmListFileLexer_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); \
 	} \
 	YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
 	}
-
 #define yy_set_bol(at_bol) \
 	{ \
 	if ( ! YY_CURRENT_BUFFER ){\
-        cmListFileLexer_yyensure_buffer_stack (yyscanner); \
+        yyensure_buffer_stack (yyscanner); \
 		YY_CURRENT_BUFFER_LVALUE =    \
-            cmListFileLexer_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner); \
 	} \
 	YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
 	}
-
 #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
 
 /* Begin user sect3 */
 
 #define cmListFileLexer_yywrap(yyscanner) (/*CONSTCOND*/1)
 #define YY_SKIP_YYWRAP
-
-typedef unsigned char YY_CHAR;
+typedef flex_uint8_t YY_CHAR;
 
 typedef int yy_state_type;
 
 #define yytext_ptr yytext_r
 
-static yy_state_type yy_get_previous_state (yyscan_t yyscanner );
-static yy_state_type yy_try_NUL_trans (yy_state_type current_state  ,yyscan_t yyscanner);
-static int yy_get_next_buffer (yyscan_t yyscanner );
-static void yynoreturn yy_fatal_error (yyconst char* msg ,yyscan_t yyscanner );
+static yy_state_type yy_get_previous_state ( yyscan_t yyscanner );
+static yy_state_type yy_try_NUL_trans ( yy_state_type current_state  , yyscan_t yyscanner);
+static int yy_get_next_buffer ( yyscan_t yyscanner );
+static void yynoreturn yy_fatal_error ( const char* msg , yyscan_t yyscanner );
 
 /* Done after the current pattern has been matched and before the
  * corresponding action - sets up yytext.
@@ -367,7 +567,6 @@ static void yynoreturn yy_fatal_error (yyconst char* msg ,yyscan_t yyscanner );
 	yyg->yy_hold_char = *yy_cp; \
 	*yy_cp = '\0'; \
 	yyg->yy_c_buf_p = yy_cp;
-
 #define YY_NUM_RULES 24
 #define YY_END_OF_BUFFER 25
 /* This struct is not used in this scanner,
@@ -377,19 +576,19 @@ struct yy_trans_info
 	flex_int32_t yy_verify;
 	flex_int32_t yy_nxt;
 	};
-static yyconst flex_int16_t yy_accept[77] =
+static const flex_int16_t yy_accept[81] =
     {   0,
         0,    0,    0,    0,    0,    0,    0,    0,    4,    4,
        25,   13,   22,    1,   16,    3,   13,    5,    6,    7,
-       15,   23,   17,   19,   20,   21,   10,   11,    8,   12,
-        9,    4,   13,    0,   13,    0,   22,    0,    0,    7,
-       13,    0,   13,    0,    2,    0,   13,   17,    0,   18,
-       10,    8,    4,    0,   14,    0,    0,    0,    0,   14,
-        0,    0,   14,    0,    0,    0,    2,   14,    0,    0,
-        0,    0,    0,    0,    0,    0
+       15,   23,   23,   17,   19,   20,   21,   17,   10,   11,
+        8,   10,   12,    9,   24,    4,   13,    0,   13,    0,
+       22,    0,    0,    7,   13,    0,   13,    0,    2,    0,
+       13,   17,    0,   18,   10,    8,    4,    0,   14,    0,
+        0,    0,    0,   14,    0,    0,   14,    0,    0,    0,
+        2,   14,    0,    0,    0,    0,    0,    0,    0,    0
     } ;
 
-static yyconst YY_CHAR yy_ec[256] =
+static const YY_CHAR yy_ec[256] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
         1,    1,    4,    1,    1,    1,    1,    1,    1,    1,
@@ -421,108 +620,126 @@ static yyconst YY_CHAR yy_ec[256] =
         1,    1,    1,    1,    1
     } ;
 
-static yyconst YY_CHAR yy_meta[16] =
+static const YY_CHAR yy_meta[17] =
     {   0,
         1,    1,    2,    3,    4,    3,    1,    3,    5,    6,
-        1,    6,    1,    1,    7
+        1,    6,    1,    1,    7,    8
     } ;
 
-static yyconst flex_uint16_t yy_base[95] =
+static const flex_int16_t yy_base[99] =
     {   0,
-        0,    0,   13,   25,   14,   16,   17,   18,   90,   88,
-       88,   39,   20,  237,  237,   74,   78,  237,  237,   13,
-       54,    0,   71,  237,  237,   31,    0,  237,   73,  237,
-      237,    0,    0,   65,   75,    0,   33,   30,   72,    0,
-        0,   75,   70,    0,   74,    0,    0,   62,   70,  237,
-        0,   63,    0,   85,   99,   65,  111,   62,   34,    0,
-       54,  116,    0,   54,  127,   51,  237,   50,    0,   48,
-       47,   39,   33,   29,   17,  237,  136,  143,  150,  157,
-      164,  171,  178,  184,  191,  198,  201,  207,  214,  217,
-      219,  225,  228,  230
+        0,    0,   14,   28,   42,   56,   70,   84,   18,   19,
+       69,  100,   16,  323,  323,   55,   59,  323,  323,   13,
+      115,    0,  323,   52,  323,  323,   21,   51,    0,  323,
+       53,    0,  323,  323,  323,    0,    0,  126,   55,    0,
+       25,   25,   53,    0,    0,  136,   53,    0,   57,    0,
+        0,   42,   50,  323,    0,   43,    0,  146,  160,   45,
+      172,   43,   26,    0,   42,  184,    0,   42,  195,   40,
+      323,   40,    0,   38,   37,   34,   32,   31,   23,  323,
+      211,  219,  227,  235,  243,  251,  259,  267,  274,  281,
+      285,  291,  298,  302,  304,  310,  314,  316
 
     } ;
 
-static yyconst flex_int16_t yy_def[95] =
+static const flex_int16_t yy_def[99] =
     {   0,
-       76,    1,   77,   77,   78,   78,   79,   79,   80,   80,
-       76,   76,   76,   76,   76,   76,   12,   76,   76,   12,
-       76,   81,   82,   76,   76,   82,   83,   76,   76,   76,
-       76,   84,   12,   85,   12,   86,   76,   76,   87,   20,
-       12,   88,   12,   21,   76,   89,   12,   82,   82,   76,
-       83,   76,   84,   85,   76,   54,   85,   90,   76,   55,
-       87,   88,   55,   62,   88,   91,   76,   55,   92,   93,
-       90,   94,   91,   93,   94,    0,   76,   76,   76,   76,
-       76,   76,   76,   76,   76,   76,   76,   76,   76,   76,
-       76,   76,   76,   76
+       80,    1,   81,   81,   82,   82,   83,   83,   84,   84,
+       80,   80,   80,   80,   80,   80,   12,   80,   80,   12,
+       80,   85,   80,   86,   80,   80,   86,   86,   87,   80,
+       80,   87,   80,   80,   80,   88,   12,   89,   12,   90,
+       80,   80,   91,   20,   12,   92,   12,   21,   80,   93,
+       12,   86,   86,   80,   87,   80,   88,   89,   80,   58,
+       89,   94,   80,   59,   91,   92,   59,   66,   92,   95,
+       80,   59,   96,   97,   94,   98,   95,   97,   98,    0,
+       80,   80,   80,   80,   80,   80,   80,   80,   80,   80,
+       80,   80,   80,   80,   80,   80,   80,   80
 
     } ;
 
-static yyconst flex_uint16_t yy_nxt[253] =
+static const flex_int16_t yy_nxt[340] =
     {   0,
        12,   13,   14,   13,   15,   16,   17,   18,   19,   12,
-       12,   20,   21,   22,   12,   24,   28,   25,   28,   28,
-       28,   37,   40,   37,   40,   62,   26,   24,   29,   25,
-       29,   31,   31,   50,   37,   48,   37,   54,   26,   33,
-       59,   63,   45,   34,   59,   35,   45,   62,   33,   33,
-       33,   33,   36,   33,   41,   55,   54,   58,   42,   63,
-       43,   72,   60,   41,   44,   41,   45,   46,   41,   55,
-       55,   56,   70,   52,   48,   49,   67,   66,   57,   63,
-       60,   64,   58,   52,   49,   39,   38,   76,   65,   55,
-       14,   56,   14,   76,   76,   76,   76,   76,   57,   55,
-
-       76,   76,   76,   34,   76,   68,   76,   76,   55,   55,
-       55,   55,   69,   55,   54,   76,   54,   76,   54,   54,
-       63,   76,   64,   76,   76,   76,   76,   76,   76,   65,
-       62,   76,   62,   76,   62,   62,   23,   23,   23,   23,
-       23,   23,   23,   27,   27,   27,   27,   27,   27,   27,
-       30,   30,   30,   30,   30,   30,   30,   32,   32,   32,
-       32,   32,   32,   32,   47,   76,   47,   47,   47,   47,
-       47,   48,   76,   48,   76,   48,   48,   48,   51,   76,
-       51,   51,   51,   51,   53,   76,   53,   53,   53,   53,
-       53,   54,   76,   76,   54,   76,   54,   54,   33,   76,
-
-       33,   33,   33,   33,   33,   61,   61,   62,   76,   76,
-       62,   76,   62,   62,   41,   76,   41,   41,   41,   41,
-       41,   71,   71,   73,   73,   55,   76,   55,   55,   55,
-       55,   55,   74,   74,   75,   75,   11,   76,   76,   76,
-       76,   76,   76,   76,   76,   76,   76,   76,   76,   76,
-       76,   76
+       12,   20,   21,   22,   12,   23,   25,   41,   26,   41,
+       14,   14,   44,   54,   44,   52,   41,   27,   41,   28,
+       25,   66,   26,   35,   35,   63,   63,   49,   49,   58,
+       67,   27,   66,   28,   30,   59,   58,   62,   67,   76,
+       64,   59,   74,   56,   52,   53,   31,   32,   30,   71,
+       70,   64,   62,   56,   53,   53,   43,   42,   80,   80,
+       31,   32,   30,   80,   80,   80,   80,   80,   80,   80,
+       80,   80,   80,   80,   34,   35,   30,   80,   80,   80,
+       80,   80,   80,   80,   80,   80,   80,   80,   34,   35,
+
+       37,   80,   80,   80,   38,   80,   39,   80,   80,   37,
+       37,   37,   37,   40,   37,   45,   80,   80,   80,   46,
+       80,   47,   80,   80,   45,   48,   45,   49,   50,   45,
+       59,   80,   60,   80,   80,   80,   80,   80,   80,   61,
+       67,   80,   68,   80,   80,   80,   80,   80,   80,   69,
+       59,   80,   60,   80,   80,   80,   80,   80,   80,   61,
+       59,   80,   80,   80,   38,   80,   72,   80,   80,   59,
+       59,   59,   59,   73,   59,   58,   80,   58,   80,   58,
+       58,   80,   80,   80,   80,   80,   80,   58,   67,   80,
+       68,   80,   80,   80,   80,   80,   80,   69,   66,   80,
+
+       66,   80,   66,   66,   80,   80,   80,   80,   80,   80,
+       66,   24,   24,   24,   24,   24,   24,   24,   24,   29,
+       29,   29,   29,   29,   29,   29,   29,   33,   33,   33,
+       33,   33,   33,   33,   33,   36,   36,   36,   36,   36,
+       36,   36,   36,   51,   80,   51,   51,   51,   51,   51,
+       51,   52,   80,   52,   80,   52,   52,   52,   52,   55,
+       80,   55,   55,   55,   55,   80,   55,   57,   80,   57,
+       57,   57,   57,   57,   58,   80,   80,   58,   80,   58,
+       58,   37,   80,   37,   37,   37,   37,   37,   37,   65,
+       65,   66,   80,   80,   66,   80,   66,   66,   45,   80,
+
+       45,   45,   45,   45,   45,   45,   75,   75,   77,   77,
+       59,   80,   59,   59,   59,   59,   59,   59,   78,   78,
+       79,   79,   11,   80,   80,   80,   80,   80,   80,   80,
+       80,   80,   80,   80,   80,   80,   80,   80,   80
     } ;
 
-static yyconst flex_int16_t yy_chk[253] =
+static const flex_int16_t yy_chk[340] =
     {   0,
         1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
-        1,    1,    1,    1,    1,    3,    5,    3,    6,    7,
-        8,   13,   20,   13,   20,   75,    3,    4,    5,    4,
-        6,    7,    8,   26,   37,   26,   37,   74,    4,   12,
-       38,   73,   38,   12,   59,   12,   59,   72,   12,   12,
-       12,   12,   12,   12,   21,   71,   70,   68,   21,   66,
-       21,   64,   61,   21,   21,   21,   21,   21,   21,   34,
-       58,   34,   56,   52,   49,   48,   45,   43,   34,   42,
-       39,   42,   35,   29,   23,   17,   16,   11,   42,   54,
-       10,   54,    9,    0,    0,    0,    0,    0,   54,   55,
-
-        0,    0,    0,   55,    0,   55,    0,    0,   55,   55,
-       55,   55,   55,   55,   57,    0,   57,    0,   57,   57,
-       62,    0,   62,    0,    0,    0,    0,    0,    0,   62,
-       65,    0,   65,    0,   65,   65,   77,   77,   77,   77,
-       77,   77,   77,   78,   78,   78,   78,   78,   78,   78,
-       79,   79,   79,   79,   79,   79,   79,   80,   80,   80,
-       80,   80,   80,   80,   81,    0,   81,   81,   81,   81,
-       81,   82,    0,   82,    0,   82,   82,   82,   83,    0,
-       83,   83,   83,   83,   84,    0,   84,   84,   84,   84,
-       84,   85,    0,    0,   85,    0,   85,   85,   86,    0,
-
-       86,   86,   86,   86,   86,   87,   87,   88,    0,    0,
-       88,    0,   88,   88,   89,    0,   89,   89,   89,   89,
-       89,   90,   90,   91,   91,   92,    0,   92,   92,   92,
-       92,   92,   93,   93,   94,   94,   76,   76,   76,   76,
-       76,   76,   76,   76,   76,   76,   76,   76,   76,   76,
-       76,   76
+        1,    1,    1,    1,    1,    1,    3,   13,    3,   13,
+        9,   10,   20,   27,   20,   27,   41,    3,   41,    3,
+        4,   79,    4,    9,   10,   42,   63,   42,   63,   78,
+       77,    4,   76,    4,    5,   75,   74,   72,   70,   68,
+       65,   62,   60,   56,   53,   52,    5,    5,    6,   49,
+       47,   43,   39,   31,   28,   24,   17,   16,   11,    0,
+        6,    6,    7,    0,    0,    0,    0,    0,    0,    0,
+        0,    0,    0,    0,    7,    7,    8,    0,    0,    0,
+        0,    0,    0,    0,    0,    0,    0,    0,    8,    8,
+
+       12,    0,    0,    0,   12,    0,   12,    0,    0,   12,
+       12,   12,   12,   12,   12,   21,    0,    0,    0,   21,
+        0,   21,    0,    0,   21,   21,   21,   21,   21,   21,
+       38,    0,   38,    0,    0,    0,    0,    0,    0,   38,
+       46,    0,   46,    0,    0,    0,    0,    0,    0,   46,
+       58,    0,   58,    0,    0,    0,    0,    0,    0,   58,
+       59,    0,    0,    0,   59,    0,   59,    0,    0,   59,
+       59,   59,   59,   59,   59,   61,    0,   61,    0,   61,
+       61,    0,    0,    0,    0,    0,    0,   61,   66,    0,
+       66,    0,    0,    0,    0,    0,    0,   66,   69,    0,
+
+       69,    0,   69,   69,    0,    0,    0,    0,    0,    0,
+       69,   81,   81,   81,   81,   81,   81,   81,   81,   82,
+       82,   82,   82,   82,   82,   82,   82,   83,   83,   83,
+       83,   83,   83,   83,   83,   84,   84,   84,   84,   84,
+       84,   84,   84,   85,    0,   85,   85,   85,   85,   85,
+       85,   86,    0,   86,    0,   86,   86,   86,   86,   87,
+        0,   87,   87,   87,   87,    0,   87,   88,    0,   88,
+       88,   88,   88,   88,   89,    0,    0,   89,    0,   89,
+       89,   90,    0,   90,   90,   90,   90,   90,   90,   91,
+       91,   92,    0,    0,   92,    0,   92,   92,   93,    0,
+
+       93,   93,   93,   93,   93,   93,   94,   94,   95,   95,
+       96,    0,   96,   96,   96,   96,   96,   96,   97,   97,
+       98,   98,   80,   80,   80,   80,   80,   80,   80,   80,
+       80,   80,   80,   80,   80,   80,   80,   80,   80
     } ;
 
 /* Table of booleans, true if rule could match eol. */
-static yyconst flex_int32_t yy_rule_can_match_eol[25] =
+static const flex_int32_t yy_rule_can_match_eol[25] =
     {   0,
 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1,
     0, 0, 0, 0, 0,     };
@@ -534,8 +751,6 @@ static yyconst flex_int32_t yy_rule_can_match_eol[25] =
 #define yymore() yymore_used_but_not_detected
 #define YY_MORE_ADJ 0
 #define YY_RESTORE_YY_MORE_OFFSET
-#line 1 "cmListFileLexer.in.l"
-#line 2 "cmListFileLexer.in.l"
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
 /*
@@ -544,14 +759,12 @@ This file must be translated to C and modified to build everywhere.
 
 Run flex >= 2.6 like this:
 
-  flex --nounistd -DFLEXINT_H --prefix=cmListFileLexer_yy -ocmListFileLexer.c cmListFileLexer.in.l
+  flex --nounistd -DFLEXINT_H --noline -ocmListFileLexer.c cmListFileLexer.in.l
 
 Modify cmListFileLexer.c:
-  - remove trailing whitespace: sed -i 's/\s*$//' cmListFileLexer.c
-  - remove blank lines at end of file
-  - #include "cmStandardLexer.h" at the top
-  - add cast in cmListFileLexer_yy_scan_bytes for loop condition of _yybytes_len to size_t
-  - change type of variable yyl under yy_find_action from yy_size_t to int
+  - remove trailing whitespace:              sed -i 's/\s*$//' cmListFileLexer.c
+  - remove blank lines at end of file:       sed -i '${/^$/d;}' cmListFileLexer.c
+  - #include "cmStandardLexer.h" at the top: sed -i '1i#include "cmStandardLexer.h"' cmListFileLexer.c
 
 */
 
@@ -600,11 +813,6 @@ static void cmListFileLexerDestroy(cmListFileLexer* lexer);
 
 /*--------------------------------------------------------------------------*/
 
-
-
-
-#line 606 "cmListFileLexer.c"
-
 #define INITIAL 0
 #define STRING 1
 #define BRACKET 2
@@ -649,44 +857,44 @@ struct yyguts_t
 
     }; /* end struct yyguts_t */
 
-static int yy_init_globals (yyscan_t yyscanner );
+static int yy_init_globals ( yyscan_t yyscanner );
 
-int cmListFileLexer_yylex_init (yyscan_t* scanner);
+int yylex_init (yyscan_t* scanner);
 
-int cmListFileLexer_yylex_init_extra (YY_EXTRA_TYPE user_defined,yyscan_t* scanner);
+int yylex_init_extra ( YY_EXTRA_TYPE user_defined, yyscan_t* scanner);
 
 /* Accessor methods to globals.
    These are made visible to non-reentrant scanners for convenience. */
 
-int cmListFileLexer_yylex_destroy (yyscan_t yyscanner );
+int yylex_destroy ( yyscan_t yyscanner );
 
-int cmListFileLexer_yyget_debug (yyscan_t yyscanner );
+int yyget_debug ( yyscan_t yyscanner );
 
-void cmListFileLexer_yyset_debug (int debug_flag ,yyscan_t yyscanner );
+void yyset_debug ( int debug_flag , yyscan_t yyscanner );
 
-YY_EXTRA_TYPE cmListFileLexer_yyget_extra (yyscan_t yyscanner );
+YY_EXTRA_TYPE yyget_extra ( yyscan_t yyscanner );
 
-void cmListFileLexer_yyset_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner );
+void yyset_extra ( YY_EXTRA_TYPE user_defined , yyscan_t yyscanner );
 
-FILE *cmListFileLexer_yyget_in (yyscan_t yyscanner );
+FILE *yyget_in ( yyscan_t yyscanner );
 
-void cmListFileLexer_yyset_in  (FILE * _in_str ,yyscan_t yyscanner );
+void yyset_in  ( FILE * _in_str , yyscan_t yyscanner );
 
-FILE *cmListFileLexer_yyget_out (yyscan_t yyscanner );
+FILE *yyget_out ( yyscan_t yyscanner );
 
-void cmListFileLexer_yyset_out  (FILE * _out_str ,yyscan_t yyscanner );
+void yyset_out  ( FILE * _out_str , yyscan_t yyscanner );
 
-			int cmListFileLexer_yyget_leng (yyscan_t yyscanner );
+			int yyget_leng ( yyscan_t yyscanner );
 
-char *cmListFileLexer_yyget_text (yyscan_t yyscanner );
+char *yyget_text ( yyscan_t yyscanner );
 
-int cmListFileLexer_yyget_lineno (yyscan_t yyscanner );
+int yyget_lineno ( yyscan_t yyscanner );
 
-void cmListFileLexer_yyset_lineno (int _line_number ,yyscan_t yyscanner );
+void yyset_lineno ( int _line_number , yyscan_t yyscanner );
 
-int cmListFileLexer_yyget_column  (yyscan_t yyscanner );
+int yyget_column  ( yyscan_t yyscanner );
 
-void cmListFileLexer_yyset_column (int _column_no ,yyscan_t yyscanner );
+void yyset_column ( int _column_no , yyscan_t yyscanner );
 
 /* Macros after this point can all be overridden by user definitions in
  * section 1.
@@ -694,32 +902,31 @@ void cmListFileLexer_yyset_column (int _column_no ,yyscan_t yyscanner );
 
 #ifndef YY_SKIP_YYWRAP
 #ifdef __cplusplus
-extern "C" int cmListFileLexer_yywrap (yyscan_t yyscanner );
+extern "C" int yywrap ( yyscan_t yyscanner );
 #else
-extern int cmListFileLexer_yywrap (yyscan_t yyscanner );
+extern int yywrap ( yyscan_t yyscanner );
 #endif
 #endif
 
 #ifndef YY_NO_UNPUT
 
-    static void yyunput (int c,char *buf_ptr  ,yyscan_t yyscanner);
+    static void yyunput ( int c, char *buf_ptr  , yyscan_t yyscanner);
 
 #endif
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char *,yyconst char *,int ,yyscan_t yyscanner);
+static void yy_flex_strncpy ( char *, const char *, int , yyscan_t yyscanner);
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
+static int yy_flex_strlen ( const char * , yyscan_t yyscanner);
 #endif
 
 #ifndef YY_NO_INPUT
-
 #ifdef __cplusplus
-static int yyinput (yyscan_t yyscanner );
+static int yyinput ( yyscan_t yyscanner );
 #else
-static int input (yyscan_t yyscanner );
+static int input ( yyscan_t yyscanner );
 #endif
 
 #endif
@@ -750,7 +957,7 @@ static int input (yyscan_t yyscanner );
 	if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
 		{ \
 		int c = '*'; \
-		size_t n; \
+		int n; \
 		for ( n = 0; n < max_size && \
 			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
 			buf[n] = (char) c; \
@@ -763,7 +970,7 @@ static int input (yyscan_t yyscanner );
 	else \
 		{ \
 		errno=0; \
-		while ( (result = (int) fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
+		while ( (result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin)) \
 			{ \
 			if( errno != EINTR) \
 				{ \
@@ -804,9 +1011,9 @@ static int input (yyscan_t yyscanner );
 #ifndef YY_DECL
 #define YY_DECL_IS_OURS 1
 
-extern int cmListFileLexer_yylex (yyscan_t yyscanner);
+extern int yylex (yyscan_t yyscanner);
 
-#define YY_DECL int cmListFileLexer_yylex (yyscan_t yyscanner)
+#define YY_DECL int yylex (yyscan_t yyscanner)
 #endif /* !YY_DECL */
 
 /* Code executed at the beginning of each rule, after yytext and yyleng
@@ -851,19 +1058,15 @@ YY_DECL
 			yyout = stdout;
 
 		if ( ! YY_CURRENT_BUFFER ) {
-			cmListFileLexer_yyensure_buffer_stack (yyscanner);
+			yyensure_buffer_stack (yyscanner);
 			YY_CURRENT_BUFFER_LVALUE =
-				cmListFileLexer_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+				yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner);
 		}
 
-		cmListFileLexer_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 		}
 
 	{
-#line 80 "cmListFileLexer.in.l"
-
-
-#line 866 "cmListFileLexer.c"
 
 	while ( /*CONSTCOND*/1 )		/* loops until end-of-file is reached */
 		{
@@ -890,13 +1093,13 @@ yy_match:
 			while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
 				{
 				yy_current_state = (int) yy_def[yy_current_state];
-				if ( yy_current_state >= 77 )
-					yy_c = yy_meta[(unsigned int) yy_c];
+				if ( yy_current_state >= 81 )
+					yy_c = yy_meta[yy_c];
 				}
-			yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
+			yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 			++yy_cp;
 			}
-		while ( yy_base[yy_current_state] != 237 );
+		while ( yy_base[yy_current_state] != 323 );
 
 yy_find_action:
 		yy_act = yy_accept[yy_current_state];
@@ -935,7 +1138,6 @@ do_action:	/* This label is used only to access EOF actions. */
 case 1:
 /* rule 1 can match eol */
 YY_RULE_SETUP
-#line 82 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_Newline;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
@@ -948,7 +1150,6 @@ YY_RULE_SETUP
 case 2:
 /* rule 2 can match eol */
 YY_RULE_SETUP
-#line 91 "cmListFileLexer.in.l"
 {
   const char* bracket = yytext;
   lexer->comment = yytext[0] == '#';
@@ -971,7 +1172,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 3:
 YY_RULE_SETUP
-#line 111 "cmListFileLexer.in.l"
 {
   lexer->column += yyleng;
   BEGIN(COMMENT);
@@ -979,14 +1179,12 @@ YY_RULE_SETUP
 	YY_BREAK
 case 4:
 YY_RULE_SETUP
-#line 116 "cmListFileLexer.in.l"
 {
   lexer->column += yyleng;
 }
 	YY_BREAK
 case 5:
 YY_RULE_SETUP
-#line 120 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_ParenLeft;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
@@ -996,7 +1194,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 6:
 YY_RULE_SETUP
-#line 127 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_ParenRight;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
@@ -1006,7 +1203,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 7:
 YY_RULE_SETUP
-#line 134 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_Identifier;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
@@ -1016,7 +1212,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 8:
 YY_RULE_SETUP
-#line 141 "cmListFileLexer.in.l"
 {
   /* Handle ]]====]=======]*/
   cmListFileLexerAppend(lexer, yytext, yyleng);
@@ -1028,7 +1223,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 9:
 YY_RULE_SETUP
-#line 150 "cmListFileLexer.in.l"
 {
   lexer->column += yyleng;
   /* Erase the partial bracket from the token.  */
@@ -1040,7 +1234,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 10:
 YY_RULE_SETUP
-#line 159 "cmListFileLexer.in.l"
 {
   cmListFileLexerAppend(lexer, yytext, yyleng);
   lexer->column += yyleng;
@@ -1049,7 +1242,6 @@ YY_RULE_SETUP
 case 11:
 /* rule 11 can match eol */
 YY_RULE_SETUP
-#line 164 "cmListFileLexer.in.l"
 {
   cmListFileLexerAppend(lexer, yytext, yyleng);
   ++lexer->line;
@@ -1059,7 +1251,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 12:
 YY_RULE_SETUP
-#line 171 "cmListFileLexer.in.l"
 {
   cmListFileLexerAppend(lexer, yytext, yyleng);
   lexer->column += yyleng;
@@ -1068,7 +1259,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case YY_STATE_EOF(BRACKET):
 case YY_STATE_EOF(BRACKETEND):
-#line 177 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_BadBracket;
   BEGIN(INITIAL);
@@ -1077,7 +1267,6 @@ case YY_STATE_EOF(BRACKETEND):
 	YY_BREAK
 case 13:
 YY_RULE_SETUP
-#line 183 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_ArgumentUnquoted;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
@@ -1087,7 +1276,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 14:
 YY_RULE_SETUP
-#line 190 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_ArgumentUnquoted;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
@@ -1097,7 +1285,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 15:
 YY_RULE_SETUP
-#line 197 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_ArgumentUnquoted;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
@@ -1107,7 +1294,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 16:
 YY_RULE_SETUP
-#line 204 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_ArgumentQuoted;
   cmListFileLexerSetToken(lexer, "", 0);
@@ -1117,7 +1303,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 17:
 YY_RULE_SETUP
-#line 211 "cmListFileLexer.in.l"
 {
   cmListFileLexerAppend(lexer, yytext, yyleng);
   lexer->column += yyleng;
@@ -1126,7 +1311,6 @@ YY_RULE_SETUP
 case 18:
 /* rule 18 can match eol */
 YY_RULE_SETUP
-#line 216 "cmListFileLexer.in.l"
 {
   /* Continuation: text is not part of string */
   ++lexer->line;
@@ -1136,7 +1320,6 @@ YY_RULE_SETUP
 case 19:
 /* rule 19 can match eol */
 YY_RULE_SETUP
-#line 222 "cmListFileLexer.in.l"
 {
   cmListFileLexerAppend(lexer, yytext, yyleng);
   ++lexer->line;
@@ -1145,7 +1328,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 20:
 YY_RULE_SETUP
-#line 228 "cmListFileLexer.in.l"
 {
   lexer->column += yyleng;
   BEGIN(INITIAL);
@@ -1154,14 +1336,12 @@ YY_RULE_SETUP
 	YY_BREAK
 case 21:
 YY_RULE_SETUP
-#line 234 "cmListFileLexer.in.l"
 {
   cmListFileLexerAppend(lexer, yytext, yyleng);
   lexer->column += yyleng;
 }
 	YY_BREAK
 case YY_STATE_EOF(STRING):
-#line 239 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_BadString;
   BEGIN(INITIAL);
@@ -1170,7 +1350,6 @@ case YY_STATE_EOF(STRING):
 	YY_BREAK
 case 22:
 YY_RULE_SETUP
-#line 245 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_Space;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
@@ -1180,7 +1359,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case 23:
 YY_RULE_SETUP
-#line 252 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_BadCharacter;
   cmListFileLexerSetToken(lexer, yytext, yyleng);
@@ -1190,7 +1368,6 @@ YY_RULE_SETUP
 	YY_BREAK
 case YY_STATE_EOF(INITIAL):
 case YY_STATE_EOF(COMMENT):
-#line 259 "cmListFileLexer.in.l"
 {
   lexer->token.type = cmListFileLexer_Token_None;
   cmListFileLexerSetToken(lexer, 0, 0);
@@ -1199,10 +1376,8 @@ case YY_STATE_EOF(COMMENT):
 	YY_BREAK
 case 24:
 YY_RULE_SETUP
-#line 265 "cmListFileLexer.in.l"
 ECHO;
 	YY_BREAK
-#line 1205 "cmListFileLexer.c"
 
 	case YY_END_OF_BUFFER:
 		{
@@ -1218,7 +1393,7 @@ ECHO;
 			/* We're scanning a new file or input source.  It's
 			 * possible that this happened because the user
 			 * just pointed yyin at a new source and called
-			 * cmListFileLexer_yylex().  If so, then we have to assure
+			 * yylex().  If so, then we have to assure
 			 * consistency between YY_CURRENT_BUFFER and our
 			 * globals.  Here is the right place to do so, because
 			 * this is the first action (other than possibly a
@@ -1278,7 +1453,7 @@ ECHO;
 				{
 				yyg->yy_did_buffer_switch_on_eof = 0;
 
-				if ( cmListFileLexer_yywrap(yyscanner ) )
+				if ( yywrap( yyscanner ) )
 					{
 					/* Note: because we've taken care in
 					 * yy_get_next_buffer() to have set up
@@ -1332,7 +1507,7 @@ ECHO;
 	} /* end of action switch */
 		} /* end of scanning one token */
 	} /* end of user's declarations */
-} /* end of cmListFileLexer_yylex */
+} /* end of yylex */
 
 /* yy_get_next_buffer - try to read in a new buffer
  *
@@ -1346,7 +1521,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
 	char *source = yyg->yytext_ptr;
-	yy_size_t number_to_move, i;
+	int number_to_move, i;
 	int ret_val;
 
 	if ( yyg->yy_c_buf_p > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[yyg->yy_n_chars + 1] )
@@ -1375,7 +1550,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 	/* Try to read more data. */
 
 	/* First move last chars to start of buffer. */
-	number_to_move = (yy_size_t) (yyg->yy_c_buf_p - yyg->yytext_ptr) - 1;
+	number_to_move = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr - 1);
 
 	for ( i = 0; i < number_to_move; ++i )
 		*(dest++) = *(source++);
@@ -1411,7 +1586,8 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 
 				b->yy_ch_buf = (char *)
 					/* Include room in for 2 EOB chars. */
-					cmListFileLexer_yyrealloc((void *) b->yy_ch_buf,b->yy_buf_size + 2 ,yyscanner );
+					yyrealloc( (void *) b->yy_ch_buf,
+							 (yy_size_t) (b->yy_buf_size + 2) , yyscanner );
 				}
 			else
 				/* Can't grow it, we don't own it. */
@@ -1443,7 +1619,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		if ( number_to_move == YY_MORE_ADJ )
 			{
 			ret_val = EOB_ACT_END_OF_FILE;
-			cmListFileLexer_yyrestart(yyin  ,yyscanner);
+			yyrestart( yyin  , yyscanner);
 			}
 
 		else
@@ -1457,12 +1633,15 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 	else
 		ret_val = EOB_ACT_CONTINUE_SCAN;
 
-	if ((int) (yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
+	if ((yyg->yy_n_chars + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
 		/* Extend the array by 50%, plus the number we really need. */
 		int new_size = yyg->yy_n_chars + number_to_move + (yyg->yy_n_chars >> 1);
-		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) cmListFileLexer_yyrealloc((void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf,new_size ,yyscanner );
+		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc(
+			(void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size , yyscanner );
 		if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
 			YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
+		/* "- 2" to take care of EOB's */
+		YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2);
 	}
 
 	yyg->yy_n_chars += number_to_move;
@@ -1486,7 +1665,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 
 	for ( yy_cp = yyg->yytext_ptr + YY_MORE_ADJ; yy_cp < yyg->yy_c_buf_p; ++yy_cp )
 		{
-		YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
+		YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 16);
 		if ( yy_accept[yy_current_state] )
 			{
 			yyg->yy_last_accepting_state = yy_current_state;
@@ -1495,10 +1674,10 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
 			{
 			yy_current_state = (int) yy_def[yy_current_state];
-			if ( yy_current_state >= 77 )
-				yy_c = yy_meta[(unsigned int) yy_c];
+			if ( yy_current_state >= 81 )
+				yy_c = yy_meta[yy_c];
 			}
-		yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
+		yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
 		}
 
 	return yy_current_state;
@@ -1515,7 +1694,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner; /* This var may be unused depending upon options. */
 	char *yy_cp = yyg->yy_c_buf_p;
 
-	YY_CHAR yy_c = 1;
+	YY_CHAR yy_c = 16;
 	if ( yy_accept[yy_current_state] )
 		{
 		yyg->yy_last_accepting_state = yy_current_state;
@@ -1524,11 +1703,11 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 	while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
 		{
 		yy_current_state = (int) yy_def[yy_current_state];
-		if ( yy_current_state >= 77 )
-			yy_c = yy_meta[(unsigned int) yy_c];
+		if ( yy_current_state >= 81 )
+			yy_c = yy_meta[yy_c];
 		}
-	yy_current_state = yy_nxt[yy_base[yy_current_state] + (flex_int16_t) yy_c];
-	yy_is_jam = (yy_current_state == 76);
+	yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
+	yy_is_jam = (yy_current_state == 80);
 
 	(void)yyg;
 	return yy_is_jam ? 0 : yy_current_state;
@@ -1605,7 +1784,7 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 
 		else
 			{ /* need more input */
-			int offset = yyg->yy_c_buf_p - yyg->yytext_ptr;
+			int offset = (int) (yyg->yy_c_buf_p - yyg->yytext_ptr);
 			++yyg->yy_c_buf_p;
 
 			switch ( yy_get_next_buffer( yyscanner ) )
@@ -1622,13 +1801,13 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 					 */
 
 					/* Reset buffer status. */
-					cmListFileLexer_yyrestart(yyin ,yyscanner);
+					yyrestart( yyin , yyscanner);
 
 					/*FALLTHROUGH*/
 
 				case EOB_ACT_END_OF_FILE:
 					{
-					if ( cmListFileLexer_yywrap(yyscanner ) )
+					if ( yywrap( yyscanner ) )
 						return 0;
 
 					if ( ! yyg->yy_did_buffer_switch_on_eof )
@@ -1667,34 +1846,34 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @note This function does not reset the start condition to @c INITIAL .
  */
-    void cmListFileLexer_yyrestart  (FILE * input_file , yyscan_t yyscanner)
+    void yyrestart  (FILE * input_file , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	if ( ! YY_CURRENT_BUFFER ){
-        cmListFileLexer_yyensure_buffer_stack (yyscanner);
+        yyensure_buffer_stack (yyscanner);
 		YY_CURRENT_BUFFER_LVALUE =
-            cmListFileLexer_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
+            yy_create_buffer( yyin, YY_BUF_SIZE , yyscanner);
 	}
 
-	cmListFileLexer_yy_init_buffer(YY_CURRENT_BUFFER,input_file ,yyscanner);
-	cmListFileLexer_yy_load_buffer_state(yyscanner );
+	yy_init_buffer( YY_CURRENT_BUFFER, input_file , yyscanner);
+	yy_load_buffer_state( yyscanner );
 }
 
 /** Switch to a different input buffer.
  * @param new_buffer The new input buffer.
  * @param yyscanner The scanner object.
  */
-    void cmListFileLexer_yy_switch_to_buffer  (YY_BUFFER_STATE  new_buffer , yyscan_t yyscanner)
+    void yy_switch_to_buffer  (YY_BUFFER_STATE  new_buffer , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	/* TODO. We should be able to replace this entire function body
 	 * with
-	 *		cmListFileLexer_yypop_buffer_state();
-	 *		cmListFileLexer_yypush_buffer_state(new_buffer);
+	 *		yypop_buffer_state();
+	 *		yypush_buffer_state(new_buffer);
      */
-	cmListFileLexer_yyensure_buffer_stack (yyscanner);
+	yyensure_buffer_stack (yyscanner);
 	if ( YY_CURRENT_BUFFER == new_buffer )
 		return;
 
@@ -1707,17 +1886,17 @@ static int yy_get_next_buffer (yyscan_t yyscanner)
 		}
 
 	YY_CURRENT_BUFFER_LVALUE = new_buffer;
-	cmListFileLexer_yy_load_buffer_state(yyscanner );
+	yy_load_buffer_state( yyscanner );
 
 	/* We don't actually know whether we did this switch during
-	 * EOF (cmListFileLexer_yywrap()) processing, but the only time this flag
-	 * is looked at is after cmListFileLexer_yywrap() is called, so it's safe
+	 * EOF (yywrap()) processing, but the only time this flag
+	 * is looked at is after yywrap() is called, so it's safe
 	 * to go ahead and always set it.
 	 */
 	yyg->yy_did_buffer_switch_on_eof = 1;
 }
 
-static void cmListFileLexer_yy_load_buffer_state  (yyscan_t yyscanner)
+static void yy_load_buffer_state  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	yyg->yy_n_chars = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
@@ -1732,35 +1911,35 @@ static void cmListFileLexer_yy_load_buffer_state  (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @return the allocated buffer state.
  */
-    YY_BUFFER_STATE cmListFileLexer_yy_create_buffer  (FILE * file, int  size , yyscan_t yyscanner)
+    YY_BUFFER_STATE yy_create_buffer  (FILE * file, int  size , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 
-	b = (YY_BUFFER_STATE) cmListFileLexer_yyalloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+	b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) , yyscanner );
 	if ( ! b )
-		YY_FATAL_ERROR( "out of dynamic memory in cmListFileLexer_yy_create_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 
-	b->yy_buf_size = (yy_size_t)size;
+	b->yy_buf_size = size;
 
 	/* yy_ch_buf has to be 2 characters longer than the size given because
 	 * we need to put in 2 end-of-buffer characters.
 	 */
-	b->yy_ch_buf = (char *) cmListFileLexer_yyalloc(b->yy_buf_size + 2 ,yyscanner );
+	b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2) , yyscanner );
 	if ( ! b->yy_ch_buf )
-		YY_FATAL_ERROR( "out of dynamic memory in cmListFileLexer_yy_create_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );
 
 	b->yy_is_our_buffer = 1;
 
-	cmListFileLexer_yy_init_buffer(b,file ,yyscanner);
+	yy_init_buffer( b, file , yyscanner);
 
 	return b;
 }
 
 /** Destroy the buffer.
- * @param b a buffer created with cmListFileLexer_yy_create_buffer()
+ * @param b a buffer created with yy_create_buffer()
  * @param yyscanner The scanner object.
  */
-    void cmListFileLexer_yy_delete_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+    void yy_delete_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -1771,28 +1950,28 @@ static void cmListFileLexer_yy_load_buffer_state  (yyscan_t yyscanner)
 		YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;
 
 	if ( b->yy_is_our_buffer )
-		cmListFileLexer_yyfree((void *) b->yy_ch_buf ,yyscanner );
+		yyfree( (void *) b->yy_ch_buf , yyscanner );
 
-	cmListFileLexer_yyfree((void *) b ,yyscanner );
+	yyfree( (void *) b , yyscanner );
 }
 
 /* Initializes or reinitializes a buffer.
  * This function is sometimes called more than once on the same buffer,
- * such as during a cmListFileLexer_yyrestart() or at EOF.
+ * such as during a yyrestart() or at EOF.
  */
-    static void cmListFileLexer_yy_init_buffer  (YY_BUFFER_STATE  b, FILE * file , yyscan_t yyscanner)
+    static void yy_init_buffer  (YY_BUFFER_STATE  b, FILE * file , yyscan_t yyscanner)
 
 {
 	int oerrno = errno;
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
-	cmListFileLexer_yy_flush_buffer(b ,yyscanner);
+	yy_flush_buffer( b , yyscanner);
 
 	b->yy_input_file = file;
 	b->yy_fill_buffer = 1;
 
-    /* If b is the current buffer, then cmListFileLexer_yy_init_buffer was _probably_
-     * called from cmListFileLexer_yyrestart() or through yy_get_next_buffer.
+    /* If b is the current buffer, then yy_init_buffer was _probably_
+     * called from yyrestart() or through yy_get_next_buffer.
      * In that case, we don't want to reset the lineno or column.
      */
     if (b != YY_CURRENT_BUFFER){
@@ -1809,7 +1988,7 @@ static void cmListFileLexer_yy_load_buffer_state  (yyscan_t yyscanner)
  * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
  * @param yyscanner The scanner object.
  */
-    void cmListFileLexer_yy_flush_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
+    void yy_flush_buffer (YY_BUFFER_STATE  b , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if ( ! b )
@@ -1830,7 +2009,7 @@ static void cmListFileLexer_yy_load_buffer_state  (yyscan_t yyscanner)
 	b->yy_buffer_status = YY_BUFFER_NEW;
 
 	if ( b == YY_CURRENT_BUFFER )
-		cmListFileLexer_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 }
 
 /** Pushes the new state onto the stack. The new state becomes
@@ -1839,15 +2018,15 @@ static void cmListFileLexer_yy_load_buffer_state  (yyscan_t yyscanner)
  *  @param new_buffer The new state.
  *  @param yyscanner The scanner object.
  */
-void cmListFileLexer_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner)
+void yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if (new_buffer == NULL)
 		return;
 
-	cmListFileLexer_yyensure_buffer_stack(yyscanner);
+	yyensure_buffer_stack(yyscanner);
 
-	/* This block is copied from cmListFileLexer_yy_switch_to_buffer. */
+	/* This block is copied from yy_switch_to_buffer. */
 	if ( YY_CURRENT_BUFFER )
 		{
 		/* Flush out information for old buffer. */
@@ -1861,8 +2040,8 @@ void cmListFileLexer_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t
 		yyg->yy_buffer_stack_top++;
 	YY_CURRENT_BUFFER_LVALUE = new_buffer;
 
-	/* copied from cmListFileLexer_yy_switch_to_buffer. */
-	cmListFileLexer_yy_load_buffer_state(yyscanner );
+	/* copied from yy_switch_to_buffer. */
+	yy_load_buffer_state( yyscanner );
 	yyg->yy_did_buffer_switch_on_eof = 1;
 }
 
@@ -1870,19 +2049,19 @@ void cmListFileLexer_yypush_buffer_state (YY_BUFFER_STATE new_buffer , yyscan_t
  *  The next element becomes the new top.
  *  @param yyscanner The scanner object.
  */
-void cmListFileLexer_yypop_buffer_state (yyscan_t yyscanner)
+void yypop_buffer_state (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	if (!YY_CURRENT_BUFFER)
 		return;
 
-	cmListFileLexer_yy_delete_buffer(YY_CURRENT_BUFFER ,yyscanner);
+	yy_delete_buffer(YY_CURRENT_BUFFER , yyscanner);
 	YY_CURRENT_BUFFER_LVALUE = NULL;
 	if (yyg->yy_buffer_stack_top > 0)
 		--yyg->yy_buffer_stack_top;
 
 	if (YY_CURRENT_BUFFER) {
-		cmListFileLexer_yy_load_buffer_state(yyscanner );
+		yy_load_buffer_state( yyscanner );
 		yyg->yy_did_buffer_switch_on_eof = 1;
 	}
 }
@@ -1890,9 +2069,9 @@ void cmListFileLexer_yypop_buffer_state (yyscan_t yyscanner)
 /* Allocates the stack if it does not exist.
  *  Guarantees space for at least one push.
  */
-static void cmListFileLexer_yyensure_buffer_stack (yyscan_t yyscanner)
+static void yyensure_buffer_stack (yyscan_t yyscanner)
 {
-	int num_to_alloc;
+	yy_size_t num_to_alloc;
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
 	if (!yyg->yy_buffer_stack) {
@@ -1902,11 +2081,11 @@ static void cmListFileLexer_yyensure_buffer_stack (yyscan_t yyscanner)
 		 * immediate realloc on the next call.
          */
       num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */
-		yyg->yy_buffer_stack = (struct yy_buffer_state**)cmListFileLexer_yyalloc
+		yyg->yy_buffer_stack = (struct yy_buffer_state**)yyalloc
 								(num_to_alloc * sizeof(struct yy_buffer_state*)
 								, yyscanner);
 		if ( ! yyg->yy_buffer_stack )
-			YY_FATAL_ERROR( "out of dynamic memory in cmListFileLexer_yyensure_buffer_stack()" );
+			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
 
 		memset(yyg->yy_buffer_stack, 0, num_to_alloc * sizeof(struct yy_buffer_state*));
 
@@ -1921,12 +2100,12 @@ static void cmListFileLexer_yyensure_buffer_stack (yyscan_t yyscanner)
 		yy_size_t grow_size = 8 /* arbitrary grow size */;
 
 		num_to_alloc = yyg->yy_buffer_stack_max + grow_size;
-		yyg->yy_buffer_stack = (struct yy_buffer_state**)cmListFileLexer_yyrealloc
+		yyg->yy_buffer_stack = (struct yy_buffer_state**)yyrealloc
 								(yyg->yy_buffer_stack,
 								num_to_alloc * sizeof(struct yy_buffer_state*)
 								, yyscanner);
 		if ( ! yyg->yy_buffer_stack )
-			YY_FATAL_ERROR( "out of dynamic memory in cmListFileLexer_yyensure_buffer_stack()" );
+			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
 
 		/* zero only the new slots.*/
 		memset(yyg->yy_buffer_stack + yyg->yy_buffer_stack_max, 0, grow_size * sizeof(struct yy_buffer_state*));
@@ -1940,7 +2119,7 @@ static void cmListFileLexer_yyensure_buffer_stack (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  */
-YY_BUFFER_STATE cmListFileLexer_yy_scan_buffer  (char * base, yy_size_t  size , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_buffer  (char * base, yy_size_t  size , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 
@@ -1950,11 +2129,11 @@ YY_BUFFER_STATE cmListFileLexer_yy_scan_buffer  (char * base, yy_size_t  size ,
 		/* They forgot to leave room for the EOB's. */
 		return NULL;
 
-	b = (YY_BUFFER_STATE) cmListFileLexer_yyalloc(sizeof( struct yy_buffer_state ) ,yyscanner );
+	b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) , yyscanner );
 	if ( ! b )
-		YY_FATAL_ERROR( "out of dynamic memory in cmListFileLexer_yy_scan_buffer()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );
 
-	b->yy_buf_size = size - 2;	/* "- 2" to take care of EOB's */
+	b->yy_buf_size = (int) (size - 2);	/* "- 2" to take care of EOB's */
 	b->yy_buf_pos = b->yy_ch_buf = base;
 	b->yy_is_our_buffer = 0;
 	b->yy_input_file = NULL;
@@ -1964,53 +2143,53 @@ YY_BUFFER_STATE cmListFileLexer_yy_scan_buffer  (char * base, yy_size_t  size ,
 	b->yy_fill_buffer = 0;
 	b->yy_buffer_status = YY_BUFFER_NEW;
 
-	cmListFileLexer_yy_switch_to_buffer(b ,yyscanner );
+	yy_switch_to_buffer( b , yyscanner );
 
 	return b;
 }
 
-/** Setup the input buffer state to scan a string. The next call to cmListFileLexer_yylex() will
+/** Setup the input buffer state to scan a string. The next call to yylex() will
  * scan from a @e copy of @a str.
  * @param yystr a NUL-terminated string to scan
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  * @note If you want to scan bytes that may contain NUL values, then use
- *       cmListFileLexer_yy_scan_bytes() instead.
+ *       yy_scan_bytes() instead.
  */
-YY_BUFFER_STATE cmListFileLexer_yy_scan_string (yyconst char * yystr , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_string (const char * yystr , yyscan_t yyscanner)
 {
 
-	return cmListFileLexer_yy_scan_bytes(yystr,(int) strlen(yystr) ,yyscanner);
+	return yy_scan_bytes( yystr, (int) strlen(yystr) , yyscanner);
 }
 
-/** Setup the input buffer state to scan the given bytes. The next call to cmListFileLexer_yylex() will
+/** Setup the input buffer state to scan the given bytes. The next call to yylex() will
  * scan from a @e copy of @a bytes.
  * @param yybytes the byte buffer to scan
  * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes.
  * @param yyscanner The scanner object.
  * @return the newly allocated buffer state object.
  */
-YY_BUFFER_STATE cmListFileLexer_yy_scan_bytes  (yyconst char * yybytes, int  _yybytes_len , yyscan_t yyscanner)
+YY_BUFFER_STATE yy_scan_bytes  (const char * yybytes, int  _yybytes_len , yyscan_t yyscanner)
 {
 	YY_BUFFER_STATE b;
 	char *buf;
 	yy_size_t n;
-	yy_size_t i;
+	int i;
 
 	/* Get memory for full buffer, including space for trailing EOB's. */
-	n = (yy_size_t) _yybytes_len + 2;
-	buf = (char *) cmListFileLexer_yyalloc(n ,yyscanner );
+	n = (yy_size_t) (_yybytes_len + 2);
+	buf = (char *) yyalloc( n , yyscanner );
 	if ( ! buf )
-		YY_FATAL_ERROR( "out of dynamic memory in cmListFileLexer_yy_scan_bytes()" );
+		YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );
 
-	for ( i = 0; i < (size_t)_yybytes_len; ++i )
+	for ( i = 0; i < _yybytes_len; ++i )
 		buf[i] = yybytes[i];
 
 	buf[_yybytes_len] = buf[_yybytes_len+1] = YY_END_OF_BUFFER_CHAR;
 
-	b = cmListFileLexer_yy_scan_buffer(buf,n ,yyscanner);
+	b = yy_scan_buffer( buf, n , yyscanner);
 	if ( ! b )
-		YY_FATAL_ERROR( "bad buffer in cmListFileLexer_yy_scan_bytes()" );
+		YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );
 
 	/* It's okay to grow etc. this buffer, and we should throw it
 	 * away when we're done.
@@ -2024,11 +2203,11 @@ YY_BUFFER_STATE cmListFileLexer_yy_scan_bytes  (yyconst char * yybytes, int  _yy
 #define YY_EXIT_FAILURE 2
 #endif
 
-static void yynoreturn yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
+static void yynoreturn yy_fatal_error (const char* msg , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
-	(void) fprintf( stderr, "%s\n", msg );
+	fprintf( stderr, "%s\n", msg );
 	exit( YY_EXIT_FAILURE );
 }
 
@@ -2054,7 +2233,7 @@ static void yynoreturn yy_fatal_error (yyconst char* msg , yyscan_t yyscanner)
 /** Get the user-defined data for this scanner.
  * @param yyscanner The scanner object.
  */
-YY_EXTRA_TYPE cmListFileLexer_yyget_extra  (yyscan_t yyscanner)
+YY_EXTRA_TYPE yyget_extra  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyextra;
@@ -2063,7 +2242,7 @@ YY_EXTRA_TYPE cmListFileLexer_yyget_extra  (yyscan_t yyscanner)
 /** Get the current line number.
  * @param yyscanner The scanner object.
  */
-int cmListFileLexer_yyget_lineno  (yyscan_t yyscanner)
+int yyget_lineno  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -2076,7 +2255,7 @@ int cmListFileLexer_yyget_lineno  (yyscan_t yyscanner)
 /** Get the current column number.
  * @param yyscanner The scanner object.
  */
-int cmListFileLexer_yyget_column  (yyscan_t yyscanner)
+int yyget_column  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
@@ -2089,7 +2268,7 @@ int cmListFileLexer_yyget_column  (yyscan_t yyscanner)
 /** Get the input stream.
  * @param yyscanner The scanner object.
  */
-FILE *cmListFileLexer_yyget_in  (yyscan_t yyscanner)
+FILE *yyget_in  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyin;
@@ -2098,7 +2277,7 @@ FILE *cmListFileLexer_yyget_in  (yyscan_t yyscanner)
 /** Get the output stream.
  * @param yyscanner The scanner object.
  */
-FILE *cmListFileLexer_yyget_out  (yyscan_t yyscanner)
+FILE *yyget_out  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyout;
@@ -2107,7 +2286,7 @@ FILE *cmListFileLexer_yyget_out  (yyscan_t yyscanner)
 /** Get the length of the current token.
  * @param yyscanner The scanner object.
  */
-int cmListFileLexer_yyget_leng  (yyscan_t yyscanner)
+int yyget_leng  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yyleng;
@@ -2117,7 +2296,7 @@ int cmListFileLexer_yyget_leng  (yyscan_t yyscanner)
  * @param yyscanner The scanner object.
  */
 
-char *cmListFileLexer_yyget_text  (yyscan_t yyscanner)
+char *yyget_text  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yytext;
@@ -2127,7 +2306,7 @@ char *cmListFileLexer_yyget_text  (yyscan_t yyscanner)
  * @param user_defined The data to be associated with this scanner.
  * @param yyscanner The scanner object.
  */
-void cmListFileLexer_yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
+void yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyextra = user_defined ;
@@ -2137,13 +2316,13 @@ void cmListFileLexer_yyset_extra (YY_EXTRA_TYPE  user_defined , yyscan_t yyscann
  * @param _line_number line number
  * @param yyscanner The scanner object.
  */
-void cmListFileLexer_yyset_lineno (int  _line_number , yyscan_t yyscanner)
+void yyset_lineno (int  _line_number , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
         /* lineno is only valid if an input buffer exists. */
         if (! YY_CURRENT_BUFFER )
-           YY_FATAL_ERROR( "cmListFileLexer_yyset_lineno called with no buffer" );
+           YY_FATAL_ERROR( "yyset_lineno called with no buffer" );
 
     yylineno = _line_number;
 }
@@ -2152,13 +2331,13 @@ void cmListFileLexer_yyset_lineno (int  _line_number , yyscan_t yyscanner)
  * @param _column_no column number
  * @param yyscanner The scanner object.
  */
-void cmListFileLexer_yyset_column (int  _column_no , yyscan_t yyscanner)
+void yyset_column (int  _column_no , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
         /* column is only valid if an input buffer exists. */
         if (! YY_CURRENT_BUFFER )
-           YY_FATAL_ERROR( "cmListFileLexer_yyset_column called with no buffer" );
+           YY_FATAL_ERROR( "yyset_column called with no buffer" );
 
     yycolumn = _column_no;
 }
@@ -2167,27 +2346,27 @@ void cmListFileLexer_yyset_column (int  _column_no , yyscan_t yyscanner)
  * input buffer.
  * @param _in_str A readable stream.
  * @param yyscanner The scanner object.
- * @see cmListFileLexer_yy_switch_to_buffer
+ * @see yy_switch_to_buffer
  */
-void cmListFileLexer_yyset_in (FILE *  _in_str , yyscan_t yyscanner)
+void yyset_in (FILE *  _in_str , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyin = _in_str ;
 }
 
-void cmListFileLexer_yyset_out (FILE *  _out_str , yyscan_t yyscanner)
+void yyset_out (FILE *  _out_str , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yyout = _out_str ;
 }
 
-int cmListFileLexer_yyget_debug  (yyscan_t yyscanner)
+int yyget_debug  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     return yy_flex_debug;
 }
 
-void cmListFileLexer_yyset_debug (int  _bdebug , yyscan_t yyscanner)
+void yyset_debug (int  _bdebug , yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     yy_flex_debug = _bdebug ;
@@ -2197,20 +2376,18 @@ void cmListFileLexer_yyset_debug (int  _bdebug , yyscan_t yyscanner)
 
 /* User-visible API */
 
-/* cmListFileLexer_yylex_init is special because it creates the scanner itself, so it is
+/* yylex_init is special because it creates the scanner itself, so it is
  * the ONLY reentrant function that doesn't take the scanner as the last argument.
  * That's why we explicitly handle the declaration, instead of using our macros.
  */
-
-int cmListFileLexer_yylex_init(yyscan_t* ptr_yy_globals)
-
+int yylex_init(yyscan_t* ptr_yy_globals)
 {
     if (ptr_yy_globals == NULL){
         errno = EINVAL;
         return 1;
     }
 
-    *ptr_yy_globals = (yyscan_t) cmListFileLexer_yyalloc ( sizeof( struct yyguts_t ), NULL );
+    *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), NULL );
 
     if (*ptr_yy_globals == NULL){
         errno = ENOMEM;
@@ -2223,27 +2400,25 @@ int cmListFileLexer_yylex_init(yyscan_t* ptr_yy_globals)
     return yy_init_globals ( *ptr_yy_globals );
 }
 
-/* cmListFileLexer_yylex_init_extra has the same functionality as cmListFileLexer_yylex_init, but follows the
+/* yylex_init_extra has the same functionality as yylex_init, but follows the
  * convention of taking the scanner as the last argument. Note however, that
  * this is a *pointer* to a scanner, as it will be allocated by this call (and
  * is the reason, too, why this function also must handle its own declaration).
- * The user defined value in the first argument will be available to cmListFileLexer_yyalloc in
+ * The user defined value in the first argument will be available to yyalloc in
  * the yyextra field.
  */
-
-int cmListFileLexer_yylex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_yy_globals )
-
+int yylex_init_extra( YY_EXTRA_TYPE yy_user_defined, yyscan_t* ptr_yy_globals )
 {
     struct yyguts_t dummy_yyguts;
 
-    cmListFileLexer_yyset_extra (yy_user_defined, &dummy_yyguts);
+    yyset_extra (yy_user_defined, &dummy_yyguts);
 
     if (ptr_yy_globals == NULL){
         errno = EINVAL;
         return 1;
     }
 
-    *ptr_yy_globals = (yyscan_t) cmListFileLexer_yyalloc ( sizeof( struct yyguts_t ), &dummy_yyguts );
+    *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), &dummy_yyguts );
 
     if (*ptr_yy_globals == NULL){
         errno = ENOMEM;
@@ -2254,7 +2429,7 @@ int cmListFileLexer_yylex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr
     yy_init_globals. Leave at 0x00 for releases. */
     memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t));
 
-    cmListFileLexer_yyset_extra (yy_user_defined, *ptr_yy_globals);
+    yyset_extra (yy_user_defined, *ptr_yy_globals);
 
     return yy_init_globals ( *ptr_yy_globals );
 }
@@ -2263,7 +2438,7 @@ static int yy_init_globals (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
     /* Initialization is the same as for the non-reentrant scanner.
-     * This function is called from cmListFileLexer_yylex_destroy(), so don't allocate here.
+     * This function is called from yylex_destroy(), so don't allocate here.
      */
 
     yyg->yy_buffer_stack = NULL;
@@ -2287,37 +2462,37 @@ static int yy_init_globals (yyscan_t yyscanner)
 #endif
 
     /* For future reference: Set errno on error, since we are called by
-     * cmListFileLexer_yylex_init()
+     * yylex_init()
      */
     return 0;
 }
 
-/* cmListFileLexer_yylex_destroy is for both reentrant and non-reentrant scanners. */
-int cmListFileLexer_yylex_destroy  (yyscan_t yyscanner)
+/* yylex_destroy is for both reentrant and non-reentrant scanners. */
+int yylex_destroy  (yyscan_t yyscanner)
 {
     struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 
     /* Pop the buffer stack, destroying each element. */
 	while(YY_CURRENT_BUFFER){
-		cmListFileLexer_yy_delete_buffer(YY_CURRENT_BUFFER ,yyscanner );
+		yy_delete_buffer( YY_CURRENT_BUFFER , yyscanner );
 		YY_CURRENT_BUFFER_LVALUE = NULL;
-		cmListFileLexer_yypop_buffer_state(yyscanner);
+		yypop_buffer_state(yyscanner);
 	}
 
 	/* Destroy the stack itself. */
-	cmListFileLexer_yyfree(yyg->yy_buffer_stack ,yyscanner);
+	yyfree(yyg->yy_buffer_stack , yyscanner);
 	yyg->yy_buffer_stack = NULL;
 
     /* Destroy the start condition stack. */
-        cmListFileLexer_yyfree(yyg->yy_start_stack ,yyscanner );
+        yyfree( yyg->yy_start_stack , yyscanner );
         yyg->yy_start_stack = NULL;
 
     /* Reset the globals. This is important in a non-reentrant scanner so the next time
-     * cmListFileLexer_yylex() is called, initialization will occur. */
+     * yylex() is called, initialization will occur. */
     yy_init_globals( yyscanner);
 
     /* Destroy the main struct (reentrant only). */
-    cmListFileLexer_yyfree ( yyscanner , yyscanner );
+    yyfree ( yyscanner , yyscanner );
     yyscanner = NULL;
     return 0;
 }
@@ -2327,7 +2502,7 @@ int cmListFileLexer_yylex_destroy  (yyscan_t yyscanner)
  */
 
 #ifndef yytext_ptr
-static void yy_flex_strncpy (char* s1, yyconst char * s2, int n , yyscan_t yyscanner)
+static void yy_flex_strncpy (char* s1, const char * s2, int n , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
@@ -2339,7 +2514,7 @@ static void yy_flex_strncpy (char* s1, yyconst char * s2, int n , yyscan_t yysca
 #endif
 
 #ifdef YY_NEED_STRLEN
-static int yy_flex_strlen (yyconst char * s , yyscan_t yyscanner)
+static int yy_flex_strlen (const char * s , yyscan_t yyscanner)
 {
 	int n;
 	for ( n = 0; s[n]; ++n )
@@ -2349,14 +2524,14 @@ static int yy_flex_strlen (yyconst char * s , yyscan_t yyscanner)
 }
 #endif
 
-void *cmListFileLexer_yyalloc (yy_size_t  size , yyscan_t yyscanner)
+void *yyalloc (yy_size_t  size , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
 	return malloc(size);
 }
 
-void *cmListFileLexer_yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
+void *yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
@@ -2371,19 +2546,15 @@ void *cmListFileLexer_yyrealloc  (void * ptr, yy_size_t  size , yyscan_t yyscann
 	return realloc(ptr, size);
 }
 
-void cmListFileLexer_yyfree (void * ptr , yyscan_t yyscanner)
+void yyfree (void * ptr , yyscan_t yyscanner)
 {
 	struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
 	(void)yyg;
-	free( (char *) ptr );	/* see cmListFileLexer_yyrealloc() for (char *) cast */
+	free( (char *) ptr );	/* see yyrealloc() for (char *) cast */
 }
 
 #define YYTABLES_NAME "yytables"
 
-#line 265 "cmListFileLexer.in.l"
-
-
-
 /*--------------------------------------------------------------------------*/
 static void cmListFileLexerSetToken(cmListFileLexer* lexer, const char* text,
                                     int length)
diff --git a/Source/LexerParser/cmListFileLexer.in.l b/Source/LexerParser/cmListFileLexer.in.l
index 5152dbf08..f2fd5389d 100644
--- a/Source/LexerParser/cmListFileLexer.in.l
+++ b/Source/LexerParser/cmListFileLexer.in.l
@@ -7,14 +7,12 @@ This file must be translated to C and modified to build everywhere.
 
 Run flex >= 2.6 like this:
 
-  flex --nounistd -DFLEXINT_H --prefix=cmListFileLexer_yy -ocmListFileLexer.c cmListFileLexer.in.l
+  flex --nounistd -DFLEXINT_H --noline -ocmListFileLexer.c cmListFileLexer.in.l
 
 Modify cmListFileLexer.c:
-  - remove trailing whitespace: sed -i 's/\s*$//' cmListFileLexer.c
-  - remove blank lines at end of file
-  - #include "cmStandardLexer.h" at the top
-  - add cast in yy_scan_bytes for loop condition of _yybytes_len to size_t
-  - change type of variable yyl under yy_find_action from yy_size_t to int
+  - remove trailing whitespace:              sed -i 's/\s*$//' cmListFileLexer.c
+  - remove blank lines at end of file:       sed -i '${/^$/d;}' cmListFileLexer.c
+  - #include "cmStandardLexer.h" at the top: sed -i '1i#include "cmStandardLexer.h"' cmListFileLexer.c
 
 */
 
@@ -64,6 +62,8 @@ static void cmListFileLexerDestroy(cmListFileLexer* lexer);
 /*--------------------------------------------------------------------------*/
 %}
 
+%option prefix="cmListFileLexer_yy"
+
 %option reentrant
 %option yylineno
 %option noyywrap
@@ -74,7 +74,7 @@ static void cmListFileLexerDestroy(cmListFileLexer* lexer);
 %x COMMENT
 
 MAKEVAR \$\([A-Za-z0-9_]*\)
-UNQUOTED ([^ \t\r\n\(\)#\\\"[=]|\\.)
+UNQUOTED ([^ \0\t\r\n\(\)#\\\"[=]|\\.)
 LEGACY {MAKEVAR}|{UNQUOTED}|\"({MAKEVAR}|{UNQUOTED}|[ \t[=])*\"
 
 %%
@@ -113,7 +113,7 @@ LEGACY {MAKEVAR}|{UNQUOTED}|\"({MAKEVAR}|{UNQUOTED}|[ \t[=])*\"
   BEGIN(COMMENT);
 }
 
-<COMMENT>.* {
+<COMMENT>[^\0\n]* {
   lexer->column += yyleng;
 }
 
@@ -168,7 +168,7 @@ LEGACY {MAKEVAR}|{UNQUOTED}|\"({MAKEVAR}|{UNQUOTED}|[ \t[=])*\"
   BEGIN(BRACKET);
 }
 
-<BRACKET,BRACKETEND>. {
+<BRACKET,BRACKETEND>[^\0\n] {
   cmListFileLexerAppend(lexer, yytext, yyleng);
   lexer->column += yyleng;
   BEGIN(BRACKET);
@@ -231,7 +231,7 @@ LEGACY {MAKEVAR}|{UNQUOTED}|\"({MAKEVAR}|{UNQUOTED}|[ \t[=])*\"
   return 1;
 }
 
-<STRING>. {
+<STRING>[^\0\n] {
   cmListFileLexerAppend(lexer, yytext, yyleng);
   lexer->column += yyleng;
 }
@@ -439,11 +439,15 @@ static cmListFileLexer_BOM cmListFileLexer_ReadBOM(FILE* f)
       if (fread(b, 1, 2, f) == 2 && b[0] == 0 && b[1] == 0) {
         return cmListFileLexer_BOM_UTF32LE;
       }
-      fsetpos(f, &p);
+      if (fsetpos(f, &p) != 0) {
+        return cmListFileLexer_BOM_Broken;
+      }
       return cmListFileLexer_BOM_UTF16LE;
     }
   }
-  rewind(f);
+  if (fseek(f, 0, SEEK_SET) != 0) {
+    return cmListFileLexer_BOM_Broken;
+  }
   return cmListFileLexer_BOM_None;
 }
 
diff --git a/Source/QtDialog/CMakeLists.txt b/Source/QtDialog/CMakeLists.txt
index 9e9df781e..b38797bca 100644
--- a/Source/QtDialog/CMakeLists.txt
+++ b/Source/QtDialog/CMakeLists.txt
@@ -33,6 +33,12 @@ if (Qt5Widgets_FOUND)
       PROPERTY COMPILE_DEFINITIONS USE_QXcbIntegrationPlugin)
   endif()
 
+  if(CMake_QT_STATIC_QWindowsIntegrationPlugin_LIBRARIES)
+    list(APPEND CMake_QT_LIBRARIES ${CMake_QT_STATIC_QWindowsIntegrationPlugin_LIBRARIES})
+    set_property(SOURCE CMakeSetup.cxx
+      PROPERTY COMPILE_DEFINITIONS USE_QWindowsIntegrationPlugin)
+  endif()
+
   # We need to install platform plugin and add qt.conf for Qt5 on Mac and Windows.
   # FIXME: This should be part of Qt5 CMake scripts, but unfortunatelly
   # Qt5 support is missing there.
@@ -65,7 +71,7 @@ if (Qt5Widgets_FOUND)
       install(FILES "${CMAKE_CURRENT_BINARY_DIR}/qt.conf"
         DESTINATION "${CMAKE_INSTALL_PREFIX}/Resources"
         ${COMPONENT})
-    elseif(WIN32)
+    elseif(WIN32 AND NOT CMake_QT_STATIC_QWindowsIntegrationPlugin_LIBRARIES)
       install_qt5_plugin("Qt5::QWindowsIntegrationPlugin" QT_PLUGINS)
       file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/qt.conf"
         "[Paths]\nPlugins = ../${_qt_plugin_dir}\n")
diff --git a/Source/QtDialog/CMakeSetup.cxx b/Source/QtDialog/CMakeSetup.cxx
index 7fa2ac661..bfd43cfde 100644
--- a/Source/QtDialog/CMakeSetup.cxx
+++ b/Source/QtDialog/CMakeSetup.cxx
@@ -22,19 +22,18 @@
 
 #include "cmSystemTools.h" // IWYU pragma: keep
 
-static const char* cmDocumentationName[][2] = { { CM_NULLPTR,
+static const char* cmDocumentationName[][2] = { { nullptr,
                                                   "  cmake-gui - CMake GUI." },
-                                                { CM_NULLPTR, CM_NULLPTR } };
+                                                { nullptr, nullptr } };
 
 static const char* cmDocumentationUsage[][2] = {
-  { CM_NULLPTR, "  cmake-gui [options]\n"
-                "  cmake-gui [options] <path-to-source>\n"
-                "  cmake-gui [options] <path-to-existing-build>" },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  cmake-gui [options]\n"
+             "  cmake-gui [options] <path-to-source>\n"
+             "  cmake-gui [options] <path-to-existing-build>" },
+  { nullptr, nullptr }
 };
 
-static const char* cmDocumentationOptions[]
-                                         [2] = { { CM_NULLPTR, CM_NULLPTR } };
+static const char* cmDocumentationOptions[][2] = { { nullptr, nullptr } };
 
 #if defined(Q_OS_MAC)
 static int cmOSXInstall(std::string dir);
@@ -45,6 +44,10 @@ static void cmAddPluginPath();
 Q_IMPORT_PLUGIN(QXcbIntegrationPlugin);
 #endif
 
+#if defined(USE_QWindowsIntegrationPlugin)
+Q_IMPORT_PLUGIN(QWindowsIntegrationPlugin);
+#endif
+
 int main(int argc, char** argv)
 {
   cmsys::Encoding::CommandLineArguments encoding_args =
@@ -93,6 +96,10 @@ int main(int argc, char** argv)
   cmAddPluginPath();
 #endif
 
+#if QT_VERSION >= 0x050600
+  QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+#endif
+
   QApplication app(argc, argv);
 
   setlocale(LC_NUMERIC, "C");
diff --git a/Source/QtDialog/CMakeSetupDialog.cxx b/Source/QtDialog/CMakeSetupDialog.cxx
index 57f8e107e..bbb2395b2 100644
--- a/Source/QtDialog/CMakeSetupDialog.cxx
+++ b/Source/QtDialog/CMakeSetupDialog.cxx
@@ -32,7 +32,7 @@
 
 QCMakeThread::QCMakeThread(QObject* p)
   : QThread(p)
-  , CMakeInstance(CM_NULLPTR)
+  , CMakeInstance(nullptr)
 {
 }
 
@@ -48,7 +48,7 @@ void QCMakeThread::run()
   emit this->cmakeInitialized();
   this->exec();
   delete this->CMakeInstance;
-  this->CMakeInstance = CM_NULLPTR;
+  this->CMakeInstance = nullptr;
 }
 
 CMakeSetupDialog::CMakeSetupDialog()
@@ -1195,7 +1195,7 @@ void CMakeSetupDialog::setSearchFilter(const QString& str)
   this->CacheValues->setSearchFilter(str);
 }
 
-void CMakeSetupDialog::doOutputContextMenu(const QPoint& pt)
+void CMakeSetupDialog::doOutputContextMenu(QPoint pt)
 {
   QMenu* menu = this->Output->createStandardContextMenu();
 
diff --git a/Source/QtDialog/CMakeSetupDialog.h b/Source/QtDialog/CMakeSetupDialog.h
index 1abdb462d..0da28d813 100644
--- a/Source/QtDialog/CMakeSetupDialog.h
+++ b/Source/QtDialog/CMakeSetupDialog.h
@@ -70,7 +70,7 @@ protected slots:
   bool doConfigureInternal();
   bool doGenerateInternal();
   void exitLoop(int);
-  void doOutputContextMenu(const QPoint&);
+  void doOutputContextMenu(QPoint pt);
   void doOutputFindDialog();
   void doOutputFindNext(bool directionForward = true);
   void doOutputFindPrev();
diff --git a/Source/QtDialog/Compilers.h b/Source/QtDialog/Compilers.h
index 6c8c8f52a..746266cbb 100644
--- a/Source/QtDialog/Compilers.h
+++ b/Source/QtDialog/Compilers.h
@@ -3,7 +3,7 @@
 #ifndef COMPILERS_HPP
 #define COMPILERS_HPP
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <QWidget>
 
@@ -13,7 +13,7 @@ class Compilers : public QWidget, public Ui::Compilers
 {
   Q_OBJECT
 public:
-  Compilers(QWidget* p = CM_NULLPTR)
+  Compilers(QWidget* p = nullptr)
     : QWidget(p)
   {
     this->setupUi(this);
diff --git a/Source/QtDialog/FirstConfigure.cxx b/Source/QtDialog/FirstConfigure.cxx
index b193a2782..88ce7cb8a 100644
--- a/Source/QtDialog/FirstConfigure.cxx
+++ b/Source/QtDialog/FirstConfigure.cxx
@@ -301,7 +301,7 @@ QString CrossCompilerSetup::getFindRoot() const
 
 void CrossCompilerSetup::setFindRoot(const QString& t)
 {
-  return this->crossFindRoot->setText(t);
+  this->crossFindRoot->setText(t);
 }
 
 int CrossCompilerSetup::getProgramMode() const
diff --git a/Source/QtDialog/QCMake.h b/Source/QtDialog/QCMake.h
index e14cdf2c9..3b8cea721 100644
--- a/Source/QtDialog/QCMake.h
+++ b/Source/QtDialog/QCMake.h
@@ -3,7 +3,7 @@
 #ifndef QCMake_h
 #define QCMake_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmake.h"
 
@@ -63,7 +63,7 @@ class QCMake : public QObject
 {
   Q_OBJECT
 public:
-  QCMake(QObject* p = CM_NULLPTR);
+  QCMake(QObject* p = nullptr);
   ~QCMake();
 public slots:
   /// load the cache file in a directory
diff --git a/Source/QtDialog/QCMakeCacheView.cxx b/Source/QtDialog/QCMakeCacheView.cxx
index 08c2d58d5..1b3fb1583 100644
--- a/Source/QtDialog/QCMakeCacheView.cxx
+++ b/Source/QtDialog/QCMakeCacheView.cxx
@@ -23,7 +23,7 @@ public:
   }
 
 protected:
-  bool filterAcceptsRow(int row, const QModelIndex& p) const CM_OVERRIDE
+  bool filterAcceptsRow(int row, const QModelIndex& p) const override
   {
     QStringList strs;
     const QAbstractItemModel* m = this->sourceModel();
@@ -77,7 +77,7 @@ public:
 protected:
   bool ShowAdvanced;
 
-  bool filterAcceptsRow(int row, const QModelIndex& p) const CM_OVERRIDE
+  bool filterAcceptsRow(int row, const QModelIndex& p) const override
   {
     const QAbstractItemModel* m = this->sourceModel();
     QModelIndex idx = m->index(row, 0, p);
@@ -539,7 +539,7 @@ QWidget* QCMakeCacheModelDelegate::createEditor(
   QModelIndex var = idx.sibling(idx.row(), 0);
   int type = var.data(QCMakeCacheModel::TypeRole).toInt();
   if (type == QCMakeProperty::BOOL) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   if (type == QCMakeProperty::PATH) {
     QCMakePathEditor* editor =
@@ -642,7 +642,7 @@ QSize QCMakeCacheModelDelegate::sizeHint(const QStyleOptionViewItem& option,
   QStyleOptionButton opt;
   opt.QStyleOption::operator=(option);
   sz = sz.expandedTo(
-    style->subElementRect(QStyle::SE_ViewItemCheckIndicator, &opt, CM_NULLPTR)
+    style->subElementRect(QStyle::SE_ViewItemCheckIndicator, &opt, nullptr)
       .size());
 
   return sz;
diff --git a/Source/QtDialog/QCMakeWidgets.cxx b/Source/QtDialog/QCMakeWidgets.cxx
index 7f0cafa37..b544b8613 100644
--- a/Source/QtDialog/QCMakeWidgets.cxx
+++ b/Source/QtDialog/QCMakeWidgets.cxx
@@ -57,7 +57,7 @@ void QCMakeFilePathEditor::chooseFile()
   emit this->fileDialogExists(true);
   path =
     QFileDialog::getOpenFileName(this, title, info.absolutePath(), QString(),
-                                 CM_NULLPTR, QFileDialog::DontResolveSymlinks);
+                                 nullptr, QFileDialog::DontResolveSymlinks);
   emit this->fileDialogExists(false);
 
   if (!path.isEmpty()) {
@@ -89,7 +89,7 @@ void QCMakePathEditor::chooseFile()
 // use same QDirModel for all completers
 static QDirModel* fileDirModel()
 {
-  static QDirModel* m = CM_NULLPTR;
+  static QDirModel* m = nullptr;
   if (!m) {
     m = new QDirModel();
   }
@@ -97,7 +97,7 @@ static QDirModel* fileDirModel()
 }
 static QDirModel* pathDirModel()
 {
-  static QDirModel* m = CM_NULLPTR;
+  static QDirModel* m = nullptr;
   if (!m) {
     m = new QDirModel();
     m->setFilter(QDir::AllDirs | QDir::Drives | QDir::NoDotAndDotDot);
diff --git a/Source/QtDialog/QCMakeWidgets.h b/Source/QtDialog/QCMakeWidgets.h
index 1ec666ff6..e63c19753 100644
--- a/Source/QtDialog/QCMakeWidgets.h
+++ b/Source/QtDialog/QCMakeWidgets.h
@@ -3,7 +3,7 @@
 #ifndef QCMakeWidgets_h
 #define QCMakeWidgets_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <QComboBox>
 #include <QCompleter>
@@ -35,7 +35,7 @@ class QCMakePathEditor : public QCMakeFileEditor
 {
   Q_OBJECT
 public:
-  QCMakePathEditor(QWidget* p = CM_NULLPTR, const QString& var = QString());
+  QCMakePathEditor(QWidget* p = nullptr, const QString& var = QString());
   void chooseFile();
 };
 
@@ -44,8 +44,7 @@ class QCMakeFilePathEditor : public QCMakeFileEditor
 {
   Q_OBJECT
 public:
-  QCMakeFilePathEditor(QWidget* p = CM_NULLPTR,
-                       const QString& var = QString());
+  QCMakeFilePathEditor(QWidget* p = nullptr, const QString& var = QString());
   void chooseFile();
 };
 
diff --git a/Source/bindexplib.cxx b/Source/bindexplib.cxx
index e96226a4b..2eb47f3e9 100644
--- a/Source/bindexplib.cxx
+++ b/Source/bindexplib.cxx
@@ -218,7 +218,7 @@ public:
           *    The name of the Function entry points
           */
           if (pSymbolTable->N.Name.Short != 0) {
-            symbol = "";
+            symbol.clear();
             symbol.insert(0, (const char*)pSymbolTable->N.ShortName, 8);
           } else {
             symbol = stringTable + pSymbolTable->N.Name.Long;
@@ -394,12 +394,10 @@ bool bindexplib::AddDefinitionFile(const char* filename)
 void bindexplib::WriteFile(FILE* file)
 {
   fprintf(file, "EXPORTS \n");
-  for (std::set<std::string>::const_iterator i = this->DataSymbols.begin();
-       i != this->DataSymbols.end(); ++i) {
-    fprintf(file, "\t%s \t DATA\n", i->c_str());
+  for (std::string const& ds : this->DataSymbols) {
+    fprintf(file, "\t%s \t DATA\n", ds.c_str());
   }
-  for (std::set<std::string>::const_iterator i = this->Symbols.begin();
-       i != this->Symbols.end(); ++i) {
-    fprintf(file, "\t%s\n", i->c_str());
+  for (std::string const& s : this->Symbols) {
+    fprintf(file, "\t%s\n", s.c_str());
   }
 }
diff --git a/Source/bindexplib.h b/Source/bindexplib.h
index bc904e9f8..3e22ac78e 100644
--- a/Source/bindexplib.h
+++ b/Source/bindexplib.h
@@ -3,7 +3,7 @@
 #ifndef bindexplib_h
 #define bindexplib_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <set>
 #include <stdio.h>
diff --git a/Source/cmAddCompileOptionsCommand.cxx b/Source/cmAddCompileOptionsCommand.cxx
index 21a8012d8..c37fd9a39 100644
--- a/Source/cmAddCompileOptionsCommand.cxx
+++ b/Source/cmAddCompileOptionsCommand.cxx
@@ -13,9 +13,8 @@ bool cmAddCompileOptionsCommand::InitialPass(
     return true;
   }
 
-  for (std::vector<std::string>::const_iterator i = args.begin();
-       i != args.end(); ++i) {
-    this->Makefile->AddCompileOption(i->c_str());
+  for (std::string const& i : args) {
+    this->Makefile->AddCompileOption(i.c_str());
   }
   return true;
 }
diff --git a/Source/cmAddCompileOptionsCommand.h b/Source/cmAddCompileOptionsCommand.h
index 297f901db..3d53d097b 100644
--- a/Source/cmAddCompileOptionsCommand.h
+++ b/Source/cmAddCompileOptionsCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmAddCompileOptionsCommand_h
 #define cmAddCompileOptionsCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -18,14 +18,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmAddCompileOptionsCommand; }
+  cmCommand* Clone() override { return new cmAddCompileOptionsCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmAddCustomCommandCommand.cxx b/Source/cmAddCustomCommandCommand.cxx
index b5e7c9ea9..7fed52db5 100644
--- a/Source/cmAddCustomCommandCommand.cxx
+++ b/Source/cmAddCustomCommandCommand.cxx
@@ -31,7 +31,7 @@ bool cmAddCustomCommandCommand::InitialPass(
 
   std::string source, target, main_dependency, working, depfile;
   std::string comment_buffer;
-  const char* comment = CM_NULLPTR;
+  const char* comment = nullptr;
   std::vector<std::string> depends, outputs, output, byproducts;
   bool verbatim = false;
   bool append = false;
@@ -68,9 +68,7 @@ bool cmAddCustomCommandCommand::InitialPass(
 
   tdoing doing = doing_nothing;
 
-  for (unsigned int j = 0; j < args.size(); ++j) {
-    std::string const& copy = args[j];
-
+  for (std::string const& copy : args) {
     if (copy == "SOURCE") {
       doing = doing_source;
     } else if (copy == "COMMAND") {
@@ -355,12 +353,11 @@ bool cmAddCustomCommandCommand::InitialPass(
 bool cmAddCustomCommandCommand::CheckOutputs(
   const std::vector<std::string>& outputs)
 {
-  for (std::vector<std::string>::const_iterator o = outputs.begin();
-       o != outputs.end(); ++o) {
+  for (std::string const& o : outputs) {
     // Make sure the file will not be generated into the source
     // directory during an out of source build.
-    if (!this->Makefile->CanIWriteThisFile(o->c_str())) {
-      std::string e = "attempted to have a file \"" + *o +
+    if (!this->Makefile->CanIWriteThisFile(o.c_str())) {
+      std::string e = "attempted to have a file \"" + o +
         "\" in a source directory as an output of custom command.";
       this->SetError(e);
       cmSystemTools::SetFatalErrorOccured();
@@ -368,10 +365,10 @@ bool cmAddCustomCommandCommand::CheckOutputs(
     }
 
     // Make sure the output file name has no invalid characters.
-    std::string::size_type pos = o->find_first_of("#<>");
+    std::string::size_type pos = o.find_first_of("#<>");
     if (pos != std::string::npos) {
       std::ostringstream msg;
-      msg << "called with OUTPUT containing a \"" << (*o)[pos]
+      msg << "called with OUTPUT containing a \"" << o[pos]
           << "\".  This character is not allowed.";
       this->SetError(msg.str());
       return false;
diff --git a/Source/cmAddCustomCommandCommand.h b/Source/cmAddCustomCommandCommand.h
index c3a91b2a3..6af4f1055 100644
--- a/Source/cmAddCustomCommandCommand.h
+++ b/Source/cmAddCustomCommandCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmAddCustomCommandCommand_h
 #define cmAddCustomCommandCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmAddCustomCommandCommand; }
+  cmCommand* Clone() override { return new cmAddCustomCommandCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 protected:
   bool CheckOutputs(const std::vector<std::string>& outputs);
diff --git a/Source/cmAddCustomTargetCommand.cxx b/Source/cmAddCustomTargetCommand.cxx
index 87e114780..a8d5b2edd 100644
--- a/Source/cmAddCustomTargetCommand.cxx
+++ b/Source/cmAddCustomTargetCommand.cxx
@@ -49,7 +49,7 @@ bool cmAddCustomTargetCommand::InitialPass(
   bool uses_terminal = false;
   bool command_expand_lists = false;
   std::string comment_buffer;
-  const char* comment = CM_NULLPTR;
+  const char* comment = nullptr;
   std::vector<std::string> sources;
 
   // Keep track of parser state.
diff --git a/Source/cmAddCustomTargetCommand.h b/Source/cmAddCustomTargetCommand.h
index 7229c2779..1a55116e3 100644
--- a/Source/cmAddCustomTargetCommand.h
+++ b/Source/cmAddCustomTargetCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmAddCustomTargetCommand_h
 #define cmAddCustomTargetCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -25,14 +25,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmAddCustomTargetCommand; }
+  cmCommand* Clone() override { return new cmAddCustomTargetCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmAddDefinitionsCommand.cxx b/Source/cmAddDefinitionsCommand.cxx
index 9e0607c60..261fb5baa 100644
--- a/Source/cmAddDefinitionsCommand.cxx
+++ b/Source/cmAddDefinitionsCommand.cxx
@@ -15,9 +15,8 @@ bool cmAddDefinitionsCommand::InitialPass(std::vector<std::string> const& args,
     return true;
   }
 
-  for (std::vector<std::string>::const_iterator i = args.begin();
-       i != args.end(); ++i) {
-    this->Makefile->AddDefineFlag(i->c_str());
+  for (std::string const& i : args) {
+    this->Makefile->AddDefineFlag(i.c_str());
   }
   return true;
 }
diff --git a/Source/cmAddDefinitionsCommand.h b/Source/cmAddDefinitionsCommand.h
index abf5a5964..7b75638cb 100644
--- a/Source/cmAddDefinitionsCommand.h
+++ b/Source/cmAddDefinitionsCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmAddDefinitionsCommand_h
 #define cmAddDefinitionsCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmAddDefinitionsCommand; }
+  cmCommand* Clone() override { return new cmAddDefinitionsCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmAddDependenciesCommand.h b/Source/cmAddDependenciesCommand.h
index c7328d63e..e10df7109 100644
--- a/Source/cmAddDependenciesCommand.h
+++ b/Source/cmAddDependenciesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmDependenciessCommand_h
 #define cmDependenciessCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmAddDependenciesCommand; }
+  cmCommand* Clone() override { return new cmAddDependenciesCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmAddExecutableCommand.h b/Source/cmAddExecutableCommand.h
index 8100da185..bdf607d8d 100644
--- a/Source/cmAddExecutableCommand.h
+++ b/Source/cmAddExecutableCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmExecutablesCommand_h
 #define cmExecutablesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmAddExecutableCommand; }
+  cmCommand* Clone() override { return new cmAddExecutableCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmAddLibraryCommand.h b/Source/cmAddLibraryCommand.h
index df49fae93..aa212611d 100644
--- a/Source/cmAddLibraryCommand.h
+++ b/Source/cmAddLibraryCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmLibrarysCommand_h
 #define cmLibrarysCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmAddLibraryCommand; }
+  cmCommand* Clone() override { return new cmAddLibraryCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmAddSubDirectoryCommand.h b/Source/cmAddSubDirectoryCommand.h
index 0e71ffd85..0ea442329 100644
--- a/Source/cmAddSubDirectoryCommand.h
+++ b/Source/cmAddSubDirectoryCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmAddSubDirectoryCommand_h
 #define cmAddSubDirectoryCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -25,14 +25,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmAddSubDirectoryCommand; }
+  cmCommand* Clone() override { return new cmAddSubDirectoryCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmAddTestCommand.h b/Source/cmAddTestCommand.h
index a098a03f1..bea3f3d5d 100644
--- a/Source/cmAddTestCommand.h
+++ b/Source/cmAddTestCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmAddTestCommand_h
 #define cmAddTestCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmAddTestCommand; }
+  cmCommand* Clone() override { return new cmAddTestCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   bool HandleNameMode(std::vector<std::string> const& args);
diff --git a/Source/cmAlgorithms.h b/Source/cmAlgorithms.h
index 4adfe2328..69d0ed6a4 100644
--- a/Source/cmAlgorithms.h
+++ b/Source/cmAlgorithms.h
@@ -9,6 +9,7 @@
 #include <algorithm>
 #include <functional>
 #include <iterator>
+#include <memory>
 #include <sstream>
 #include <string.h>
 #include <string>
@@ -119,7 +120,7 @@ struct cmIsPair
 };
 
 template <typename K, typename V>
-struct cmIsPair<std::pair<K, V> >
+struct cmIsPair<std::pair<K, V>>
 {
   enum
   {
@@ -369,8 +370,7 @@ std::string cmWrap(char prefix, Range const& r, char suffix,
 template <typename Range, typename T>
 typename Range::const_iterator cmFindNot(Range const& r, T const& t)
 {
-  return std::find_if(r.begin(), r.end(),
-                      std::bind1st(std::not_equal_to<T>(), t));
+  return std::find_if(r.begin(), r.end(), [&t](T const& i) { return i != t; });
 }
 
 template <typename Range>
@@ -402,4 +402,22 @@ inline void cmStripSuffixIfExists(std::string& str, const std::string& suffix)
   }
 }
 
+namespace cm {
+
+#if defined(CMake_HAVE_CXX_MAKE_UNIQUE)
+
+using std::make_unique;
+
+#else
+
+template <typename T, typename... Args>
+std::unique_ptr<T> make_unique(Args&&... args)
+{
+  return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
+}
+
+#endif
+
+} // namespace cm
+
 #endif
diff --git a/Source/cmArchiveWrite.cxx b/Source/cmArchiveWrite.cxx
index 0f13b114f..02408a1e8 100644
--- a/Source/cmArchiveWrite.cxx
+++ b/Source/cmArchiveWrite.cxx
@@ -146,9 +146,9 @@ cmArchiveWrite::cmArchiveWrite(std::ostream& os, Compress c,
   }
 
   if (archive_write_open(
-        this->Archive, this, CM_NULLPTR,
+        this->Archive, this, nullptr,
         reinterpret_cast<archive_write_callback*>(&Callback::Write),
-        CM_NULLPTR) != ARCHIVE_OK) {
+        nullptr) != ARCHIVE_OK) {
     this->Error = "archive_write_open: ";
     this->Error += cm_archive_error_string(this->Archive);
     return;
@@ -224,7 +224,7 @@ bool cmArchiveWrite::AddFile(const char* file, size_t skip, const char* prefix)
   Entry e;
   cm_archive_entry_copy_sourcepath(e, file);
   cm_archive_entry_copy_pathname(e, dest);
-  if (archive_read_disk_entry_from_file(this->Disk, e, -1, CM_NULLPTR) !=
+  if (archive_read_disk_entry_from_file(this->Disk, e, -1, nullptr) !=
       ARCHIVE_OK) {
     this->Error = "archive_read_disk_entry_from_file '";
     this->Error += file;
diff --git a/Source/cmArchiveWrite.h b/Source/cmArchiveWrite.h
index 4c85c0d16..56dce2a45 100644
--- a/Source/cmArchiveWrite.h
+++ b/Source/cmArchiveWrite.h
@@ -67,13 +67,13 @@ public:
    * skip.  The remaining part of the input path is appended to the
    * "prefix" value to construct the final name in the archive.
    */
-  bool Add(std::string path, size_t skip = 0, const char* prefix = CM_NULLPTR,
+  bool Add(std::string path, size_t skip = 0, const char* prefix = nullptr,
            bool recursive = true);
 
   /** Returns true if there has been no error.  */
   operator safe_bool() const
   {
-    return this->Okay() ? &cmArchiveWrite::safe_bool_true : CM_NULLPTR;
+    return this->Okay() ? &cmArchiveWrite::safe_bool_true : nullptr;
   }
 
   /** Returns true if there has been an error.  */
diff --git a/Source/cmAuxSourceDirectoryCommand.h b/Source/cmAuxSourceDirectoryCommand.h
index e49e86117..3742e3e9b 100644
--- a/Source/cmAuxSourceDirectoryCommand.h
+++ b/Source/cmAuxSourceDirectoryCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmAuxSourceDirectoryCommand_h
 #define cmAuxSourceDirectoryCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -27,14 +27,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmAuxSourceDirectoryCommand; }
+  cmCommand* Clone() override { return new cmAuxSourceDirectoryCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmBreakCommand.h b/Source/cmBreakCommand.h
index fcca45c31..3b1856736 100644
--- a/Source/cmBreakCommand.h
+++ b/Source/cmBreakCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmBreakCommand_h
 #define cmBreakCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmBreakCommand; }
+  cmCommand* Clone() override { return new cmBreakCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmBuildCommand.h b/Source/cmBuildCommand.h
index 1f357a980..e0529a414 100644
--- a/Source/cmBuildCommand.h
+++ b/Source/cmBuildCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmBuildCommand_h
 #define cmBuildCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmBuildCommand; }
+  cmCommand* Clone() override { return new cmBuildCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   /**
    * The primary command signature with optional, KEYWORD-based args.
diff --git a/Source/cmBuildNameCommand.cxx b/Source/cmBuildNameCommand.cxx
index 9d2c0c642..5f54338c2 100644
--- a/Source/cmBuildNameCommand.cxx
+++ b/Source/cmBuildNameCommand.cxx
@@ -36,7 +36,7 @@ bool cmBuildNameCommand::InitialPass(std::vector<std::string> const& args,
 
   std::string buildname = "WinNT";
   if (this->Makefile->GetDefinition("UNIX")) {
-    buildname = "";
+    buildname.clear();
     cmSystemTools::RunSingleCommand("uname -a", &buildname, &buildname);
     if (!buildname.empty()) {
       std::string RegExp = "([^ ]*) [^ ]* ([^ ]*) ";
diff --git a/Source/cmBuildNameCommand.h b/Source/cmBuildNameCommand.h
index ff26c559c..4bb72d147 100644
--- a/Source/cmBuildNameCommand.h
+++ b/Source/cmBuildNameCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmBuildNameCommand_h
 #define cmBuildNameCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -15,9 +15,9 @@ class cmExecutionStatus;
 class cmBuildNameCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmBuildNameCommand; }
+  cmCommand* Clone() override { return new cmBuildNameCommand; }
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmCLocaleEnvironmentScope.cxx b/Source/cmCLocaleEnvironmentScope.cxx
index 28e8f2efc..737e3ea86 100644
--- a/Source/cmCLocaleEnvironmentScope.cxx
+++ b/Source/cmCLocaleEnvironmentScope.cxx
@@ -45,10 +45,9 @@ void cmCLocaleEnvironmentScope::SetEnv(std::string const& key,
 
 cmCLocaleEnvironmentScope::~cmCLocaleEnvironmentScope()
 {
-  for (backup_map_t::const_iterator i = this->EnvironmentBackup.begin();
-       i != this->EnvironmentBackup.end(); ++i) {
+  for (auto const& envb : this->EnvironmentBackup) {
     std::ostringstream tmp;
-    tmp << i->first << "=" << i->second;
+    tmp << envb.first << "=" << envb.second;
     cmSystemTools::PutEnv(tmp.str());
   }
 }
diff --git a/Source/cmCLocaleEnvironmentScope.h b/Source/cmCLocaleEnvironmentScope.h
index e956cb24d..ec81cb9f2 100644
--- a/Source/cmCLocaleEnvironmentScope.h
+++ b/Source/cmCLocaleEnvironmentScope.h
@@ -3,7 +3,7 @@
 #ifndef cmCLocaleEnvironmentScope_h
 #define cmCLocaleEnvironmentScope_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <map>
 #include <string>
diff --git a/Source/cmCMakeHostSystemInformationCommand.cxx b/Source/cmCMakeHostSystemInformationCommand.cxx
index 4475c5a52..5106f522d 100644
--- a/Source/cmCMakeHostSystemInformationCommand.cxx
+++ b/Source/cmCMakeHostSystemInformationCommand.cxx
@@ -76,6 +76,55 @@ bool cmCMakeHostSystemInformationCommand::GetValue(
     value = this->ValueToString(info.GetTotalPhysicalMemory());
   } else if (key == "AVAILABLE_PHYSICAL_MEMORY") {
     value = this->ValueToString(info.GetAvailablePhysicalMemory());
+  } else if (key == "IS_64BIT") {
+    value = this->ValueToString(info.Is64Bits());
+  } else if (key == "HAS_FPU") {
+    value = this->ValueToString(
+      info.DoesCPUSupportFeature(cmsys::SystemInformation::CPU_FEATURE_FPU));
+  } else if (key == "HAS_MMX") {
+    value = this->ValueToString(
+      info.DoesCPUSupportFeature(cmsys::SystemInformation::CPU_FEATURE_MMX));
+  } else if (key == "HAS_MMX_PLUS") {
+    value = this->ValueToString(info.DoesCPUSupportFeature(
+      cmsys::SystemInformation::CPU_FEATURE_MMX_PLUS));
+  } else if (key == "HAS_SSE") {
+    value = this->ValueToString(
+      info.DoesCPUSupportFeature(cmsys::SystemInformation::CPU_FEATURE_SSE));
+  } else if (key == "HAS_SSE2") {
+    value = this->ValueToString(
+      info.DoesCPUSupportFeature(cmsys::SystemInformation::CPU_FEATURE_SSE2));
+  } else if (key == "HAS_SSE_FP") {
+    value = this->ValueToString(info.DoesCPUSupportFeature(
+      cmsys::SystemInformation::CPU_FEATURE_SSE_FP));
+  } else if (key == "HAS_SSE_MMX") {
+    value = this->ValueToString(info.DoesCPUSupportFeature(
+      cmsys::SystemInformation::CPU_FEATURE_SSE_MMX));
+  } else if (key == "HAS_AMD_3DNOW") {
+    value = this->ValueToString(info.DoesCPUSupportFeature(
+      cmsys::SystemInformation::CPU_FEATURE_AMD_3DNOW));
+  } else if (key == "HAS_AMD_3DNOW_PLUS") {
+    value = this->ValueToString(info.DoesCPUSupportFeature(
+      cmsys::SystemInformation::CPU_FEATURE_AMD_3DNOW_PLUS));
+  } else if (key == "HAS_IA64") {
+    value = this->ValueToString(
+      info.DoesCPUSupportFeature(cmsys::SystemInformation::CPU_FEATURE_IA64));
+  } else if (key == "HAS_SERIAL_NUMBER") {
+    value = this->ValueToString(info.DoesCPUSupportFeature(
+      cmsys::SystemInformation::CPU_FEATURE_SERIALNUMBER));
+  } else if (key == "PROCESSOR_NAME") {
+    value = this->ValueToString(info.GetExtendedProcessorName());
+  } else if (key == "PROCESSOR_DESCRIPTION") {
+    value = info.GetCPUDescription();
+  } else if (key == "PROCESSOR_SERIAL_NUMBER") {
+    value = this->ValueToString(info.GetProcessorSerialNumber());
+  } else if (key == "OS_NAME") {
+    value = this->ValueToString(info.GetOSName());
+  } else if (key == "OS_RELEASE") {
+    value = this->ValueToString(info.GetOSRelease());
+  } else if (key == "OS_VERSION") {
+    value = this->ValueToString(info.GetOSVersion());
+  } else if (key == "OS_PLATFORM") {
+    value = this->ValueToString(info.GetOSPlatform());
 #ifdef HAVE_VS_SETUP_HELPER
   } else if (key == "VS_15_DIR") {
     cmVSSetupAPIHelper vsSetupAPIHelper;
diff --git a/Source/cmCMakeHostSystemInformationCommand.h b/Source/cmCMakeHostSystemInformationCommand.h
index ef6ca3730..bfff8f1a1 100644
--- a/Source/cmCMakeHostSystemInformationCommand.h
+++ b/Source/cmCMakeHostSystemInformationCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCMakeHostSystemInformationCommand_h
 #define cmCMakeHostSystemInformationCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <stddef.h>
 #include <string>
@@ -28,7 +28,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     return new cmCMakeHostSystemInformationCommand;
   }
@@ -38,7 +38,7 @@ public:
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   bool GetValue(cmsys::SystemInformation& info, std::string const& key,
diff --git a/Source/cmCMakeMinimumRequired.cxx b/Source/cmCMakeMinimumRequired.cxx
index 942688cee..bcc41fca9 100644
--- a/Source/cmCMakeMinimumRequired.cxx
+++ b/Source/cmCMakeMinimumRequired.cxx
@@ -19,10 +19,10 @@ bool cmCMakeMinimumRequired::InitialPass(std::vector<std::string> const& args,
   // Process arguments.
   std::string version_string;
   bool doing_version = false;
-  for (unsigned int i = 0; i < args.size(); ++i) {
-    if (args[i] == "VERSION") {
+  for (std::string const& arg : args) {
+    if (arg == "VERSION") {
       doing_version = true;
-    } else if (args[i] == "FATAL_ERROR") {
+    } else if (arg == "FATAL_ERROR") {
       if (doing_version) {
         this->SetError("called with no value for VERSION.");
         return false;
@@ -30,9 +30,9 @@ bool cmCMakeMinimumRequired::InitialPass(std::vector<std::string> const& args,
       doing_version = false;
     } else if (doing_version) {
       doing_version = false;
-      version_string = args[i];
+      version_string = arg;
     } else {
-      this->UnknownArguments.push_back(args[i]);
+      this->UnknownArguments.push_back(arg);
     }
   }
   if (doing_version) {
diff --git a/Source/cmCMakeMinimumRequired.h b/Source/cmCMakeMinimumRequired.h
index 45b6b7885..18d9460ed 100644
--- a/Source/cmCMakeMinimumRequired.h
+++ b/Source/cmCMakeMinimumRequired.h
@@ -3,7 +3,7 @@
 #ifndef cmCMakeMinimumRequired_h
 #define cmCMakeMinimumRequired_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmCMakeMinimumRequired; }
+  cmCommand* Clone() override { return new cmCMakeMinimumRequired; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   std::vector<std::string> UnknownArguments;
diff --git a/Source/cmCMakePolicyCommand.h b/Source/cmCMakePolicyCommand.h
index 0e88243f5..b18576c67 100644
--- a/Source/cmCMakePolicyCommand.h
+++ b/Source/cmCMakePolicyCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCMakePolicyCommand_h
 #define cmCMakePolicyCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmCMakePolicyCommand; }
+  cmCommand* Clone() override { return new cmCMakePolicyCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   bool HandleSetMode(std::vector<std::string> const& args);
diff --git a/Source/cmCPackPropertiesGenerator.cxx b/Source/cmCPackPropertiesGenerator.cxx
index 57a8b383c..a33b824f3 100644
--- a/Source/cmCPackPropertiesGenerator.cxx
+++ b/Source/cmCPackPropertiesGenerator.cxx
@@ -6,7 +6,6 @@
 
 #include <map>
 #include <ostream>
-#include <utility>
 
 cmCPackPropertiesGenerator::cmCPackPropertiesGenerator(
   cmLocalGenerator* lg, cmInstalledFile const& installedFile,
@@ -27,19 +26,17 @@ void cmCPackPropertiesGenerator::GenerateScriptForConfig(
   cmInstalledFile::PropertyMapType const& properties =
     this->InstalledFile.GetProperties();
 
-  for (cmInstalledFile::PropertyMapType::const_iterator i = properties.begin();
-       i != properties.end(); ++i) {
-    std::string const& name = i->first;
-    cmInstalledFile::Property const& property = i->second;
+  for (cmInstalledFile::PropertyMapType::value_type const& i : properties) {
+    std::string const& name = i.first;
+    cmInstalledFile::Property const& property = i.second;
 
     os << indent << "set_property(INSTALL "
        << cmOutputConverter::EscapeForCMake(expandedFileName) << " PROPERTY "
        << cmOutputConverter::EscapeForCMake(name);
 
-    for (cmInstalledFile::ExpressionVectorType::const_iterator j =
-           property.ValueExpressions.begin();
-         j != property.ValueExpressions.end(); ++j) {
-      std::string value = (*j)->Evaluate(this->LG, config);
+    for (cmInstalledFile::ExpressionVectorType::value_type const& j :
+         property.ValueExpressions) {
+      std::string value = j->Evaluate(this->LG, config);
       os << " " << cmOutputConverter::EscapeForCMake(value);
     }
 
diff --git a/Source/cmCPackPropertiesGenerator.h b/Source/cmCPackPropertiesGenerator.h
index 48f4c10f4..e580e044b 100644
--- a/Source/cmCPackPropertiesGenerator.h
+++ b/Source/cmCPackPropertiesGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmCPackPropertiesGenerator_h
 #define cmCPackPropertiesGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmScriptGenerator.h"
 
@@ -29,7 +29,7 @@ public:
 
 protected:
   void GenerateScriptForConfig(std::ostream& os, const std::string& config,
-                               Indent indent) CM_OVERRIDE;
+                               Indent indent) override;
 
   cmLocalGenerator* LG;
   cmInstalledFile const& InstalledFile;
diff --git a/Source/cmCPluginAPI.cxx b/Source/cmCPluginAPI.cxx
index e78f5fe04..e1e11afad 100644
--- a/Source/cmCPluginAPI.cxx
+++ b/Source/cmCPluginAPI.cxx
@@ -218,8 +218,8 @@ void CCONV cmAddUtilityCommand(void* arg, const char* utilityName,
   }
 
   // Pass the call to the makefile instance.
-  mf->AddUtilityCommand(utilityName, (all ? false : true), CM_NULLPTR,
-                        depends2, commandLines);
+  mf->AddUtilityCommand(utilityName, (all ? false : true), nullptr, depends2,
+                        commandLines);
 }
 void CCONV cmAddCustomCommand(void* arg, const char* source,
                               const char* command, int numArgs,
@@ -257,7 +257,7 @@ void CCONV cmAddCustomCommand(void* arg, const char* source,
   }
 
   // Pass the call to the makefile instance.
-  const char* no_comment = CM_NULLPTR;
+  const char* no_comment = nullptr;
   mf->AddCustomCommandOldStyle(target, outputs2, depends2, source,
                                commandLines, no_comment);
 }
@@ -291,8 +291,8 @@ void CCONV cmAddCustomCommandToOutput(void* arg, const char* output,
   }
 
   // Pass the call to the makefile instance.
-  const char* no_comment = CM_NULLPTR;
-  const char* no_working_dir = CM_NULLPTR;
+  const char* no_comment = nullptr;
+  const char* no_working_dir = nullptr;
   mf->AddCustomCommandToOutput(output, depends2, main_dependency, commandLines,
                                no_comment, no_working_dir);
 }
@@ -333,8 +333,8 @@ void CCONV cmAddCustomCommandToTarget(void* arg, const char* target,
   // Pass the call to the makefile instance.
   std::vector<std::string> no_byproducts;
   std::vector<std::string> no_depends;
-  const char* no_comment = CM_NULLPTR;
-  const char* no_working_dir = CM_NULLPTR;
+  const char* no_comment = nullptr;
+  const char* no_working_dir = nullptr;
   mf->AddCustomCommandToTarget(target, no_byproducts, no_depends, commandLines,
                                cctype, no_comment, no_working_dir);
 }
@@ -405,14 +405,8 @@ char CCONV* cmExpandVariablesInString(void* arg, const char* source,
 {
   cmMakefile* mf = static_cast<cmMakefile*>(arg);
   std::string barf = source;
-  std::string result = mf->ExpandVariablesInString(
-    barf, (escapeQuotes ? true : false), (atOnly ? true : false));
-  char* res = static_cast<char*>(malloc(result.size() + 1));
-  if (!result.empty()) {
-    strcpy(res, result.c_str());
-  }
-  res[result.size()] = '\0';
-  return res;
+  std::string result = mf->ExpandVariablesInString(barf, escapeQuotes, atOnly);
+  return strdup(result.c_str());
 }
 
 int CCONV cmExecuteCommand(void* arg, const char* name, int numArgs,
@@ -443,7 +437,7 @@ void CCONV cmExpandSourceListArguments(void* arg, int numArgs,
     result.push_back(args[i]);
   }
   int resargc = static_cast<int>(result.size());
-  char** resargv = CM_NULLPTR;
+  char** resargv = nullptr;
   if (resargc) {
     resargv = (char**)malloc(resargc * sizeof(char*));
   }
@@ -460,9 +454,7 @@ void CCONV cmFreeArguments(int argc, char** argv)
   for (i = 0; i < argc; ++i) {
     free(argv[i]);
   }
-  if (argv) {
-    free(argv);
-  }
+  free(argv);
 }
 
 int CCONV cmGetTotalArgumentSize(int argc, char** argv)
@@ -482,7 +474,7 @@ int CCONV cmGetTotalArgumentSize(int argc, char** argv)
 struct cmCPluginAPISourceFile
 {
   cmCPluginAPISourceFile()
-    : RealSourceFile(CM_NULLPTR)
+    : RealSourceFile(nullptr)
   {
   }
   cmSourceFile* RealSourceFile;
@@ -504,8 +496,8 @@ public:
   typedef derived::value_type value_type;
   ~cmCPluginAPISourceFileMap()
   {
-    for (iterator i = this->begin(); i != this->end(); ++i) {
-      delete i->second;
+    for (auto const& i : *this) {
+      delete i.second;
     }
   }
 };
@@ -513,13 +505,12 @@ cmCPluginAPISourceFileMap cmCPluginAPISourceFiles;
 
 void* CCONV cmCreateSourceFile(void)
 {
-  return (void*)new cmCPluginAPISourceFile;
+  return new cmCPluginAPISourceFile;
 }
 
 void* CCONV cmCreateNewSourceFile(void*)
 {
-  cmCPluginAPISourceFile* sf = new cmCPluginAPISourceFile;
-  return (void*)sf;
+  return new cmCPluginAPISourceFile;
 }
 
 void CCONV cmDestroySourceFile(void* arg)
@@ -552,9 +543,9 @@ void CCONV* cmGetSource(void* arg, const char* name)
       cmCPluginAPISourceFileMap::value_type entry(rsf, sf);
       i = cmCPluginAPISourceFiles.insert(entry).first;
     }
-    return (void*)i->second;
+    return i->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void* CCONV cmAddSource(void* arg, void* arg2)
@@ -562,15 +553,14 @@ void* CCONV cmAddSource(void* arg, void* arg2)
   cmMakefile* mf = static_cast<cmMakefile*>(arg);
   cmCPluginAPISourceFile* osf = static_cast<cmCPluginAPISourceFile*>(arg2);
   if (osf->FullPath.empty()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Create the real cmSourceFile instance and copy over saved information.
   cmSourceFile* rsf = mf->GetOrCreateSource(osf->FullPath);
   rsf->GetProperties() = osf->Properties;
-  for (std::vector<std::string>::iterator i = osf->Depends.begin();
-       i != osf->Depends.end(); ++i) {
-    rsf->AddDepend(*i);
+  for (std::string const& d : osf->Depends) {
+    rsf->AddDepend(d);
   }
 
   // Create the proxy for the real source file.
@@ -582,7 +572,7 @@ void* CCONV cmAddSource(void* arg, void* arg2)
 
   // Store the proxy in the map so it can be re-used and deleted later.
   cmCPluginAPISourceFiles[rsf] = sf;
-  return (void*)sf;
+  return sf;
 }
 
 const char* CCONV cmSourceFileGetSourceName(void* arg)
@@ -763,25 +753,19 @@ void CCONV cmSourceFileSetName2(void* arg, const char* name, const char* dir,
 char* CCONV cmGetFilenameWithoutExtension(const char* name)
 {
   std::string sres = cmSystemTools::GetFilenameWithoutExtension(name);
-  char* result = (char*)malloc(sres.size() + 1);
-  strcpy(result, sres.c_str());
-  return result;
+  return strdup(sres.c_str());
 }
 
 char* CCONV cmGetFilenamePath(const char* name)
 {
   std::string sres = cmSystemTools::GetFilenamePath(name);
-  char* result = (char*)malloc(sres.size() + 1);
-  strcpy(result, sres.c_str());
-  return result;
+  return strdup(sres.c_str());
 }
 
 char* CCONV cmCapitalized(const char* name)
 {
   std::string sres = cmSystemTools::Capitalized(name);
-  char* result = (char*)malloc(sres.size() + 1);
-  strcpy(result, sres.c_str());
-  return result;
+  return strdup(sres.c_str());
 }
 
 void CCONV cmCopyFileIfDifferent(const char* name1, const char* name2)
diff --git a/Source/cmCTest.cxx b/Source/cmCTest.cxx
index e2605561a..4ea14931e 100644
--- a/Source/cmCTest.cxx
+++ b/Source/cmCTest.cxx
@@ -11,9 +11,11 @@
 #include "cmsys/Process.h"
 #include "cmsys/String.hxx"
 #include "cmsys/SystemInformation.hxx"
+#include <algorithm>
 #include <ctype.h>
 #include <iostream>
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
@@ -49,7 +51,6 @@
 #include "cmVersion.h"
 #include "cmVersionConfig.h"
 #include "cmXMLWriter.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 #if defined(__BEOS__) || defined(__HAIKU__)
@@ -66,7 +67,7 @@
 struct tm* cmCTest::GetNightlyTime(std::string const& str, bool tomorrowtag)
 {
   struct tm* lctime;
-  time_t tctime = time(CM_NULLPTR);
+  time_t tctime = time(nullptr);
   lctime = gmtime(&tctime);
   char buf[1024];
   // add todays year day and month to the time in str because
@@ -84,7 +85,7 @@ struct tm* cmCTest::GetNightlyTime(std::string const& str, bool tomorrowtag)
   // As such, this time may be in the past or in the future.
   time_t ntime = curl_getdate(buf, &tctime);
   cmCTestLog(this, DEBUG, "   Get curl time: " << ntime << std::endl);
-  tctime = time(CM_NULLPTR);
+  tctime = time(nullptr);
   cmCTestLog(this, DEBUG, "   Get the current time: " << tctime << std::endl);
 
   const int dayLength = 24 * 60 * 60;
@@ -130,7 +131,7 @@ std::string cmCTest::CleanString(const std::string& str)
 
 std::string cmCTest::CurrentTime()
 {
-  time_t currenttime = time(CM_NULLPTR);
+  time_t currenttime = time(nullptr);
   struct tm* t = localtime(&currenttime);
   // return ::CleanString(ctime(&currenttime));
   char current_time[1024];
@@ -146,7 +147,7 @@ std::string cmCTest::CurrentTime()
 std::string cmCTest::GetCostDataFile()
 {
   std::string fname = this->GetCTestConfiguration("CostDataFile");
-  if (fname == "") {
+  if (fname.empty()) {
     fname = this->GetBinaryDir() + "/Testing/Temporary/CTestCostData.txt";
   }
   return fname;
@@ -156,7 +157,7 @@ std::string cmCTest::GetCostDataFile()
 static size_t HTTPResponseCallback(void* ptr, size_t size, size_t nmemb,
                                    void* data)
 {
-  int realsize = (int)(size * nmemb);
+  int realsize = static_cast<int>(size * nmemb);
 
   std::string* response = static_cast<std::string*>(data);
   const char* chPtr = static_cast<char*>(ptr);
@@ -190,7 +191,8 @@ int cmCTest::HTTPRequest(std::string url, HTTPMethod method,
       ::curl_easy_setopt(curl, CURLOPT_PUT, 1);
       file = cmsys::SystemTools::Fopen(putFile, "rb");
       ::curl_easy_setopt(curl, CURLOPT_INFILE, file);
-    // fall through to append GET fields
+      // fall through to append GET fields
+      CM_FALLTHROUGH;
     case cmCTest::HTTP_GET:
       if (!fields.empty()) {
         url += "?" + fields;
@@ -204,7 +206,7 @@ int cmCTest::HTTPRequest(std::string url, HTTPMethod method,
 
   // set response options
   ::curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, HTTPResponseCallback);
-  ::curl_easy_setopt(curl, CURLOPT_FILE, (void*)&response);
+  ::curl_easy_setopt(curl, CURLOPT_FILE, &response);
   ::curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1);
 
   CURLcode res = ::curl_easy_perform(curl);
@@ -220,12 +222,11 @@ std::string cmCTest::MakeURLSafe(const std::string& str)
 {
   std::ostringstream ost;
   char buffer[10];
-  for (std::string::size_type pos = 0; pos < str.size(); pos++) {
-    unsigned char ch = str[pos];
+  for (unsigned char ch : str) {
     if ((ch > 126 || ch < 32 || ch == '&' || ch == '%' || ch == '+' ||
          ch == '=' || ch == '@') &&
         ch != 9) {
-      sprintf(buffer, "%02x;", (unsigned int)ch);
+      sprintf(buffer, "%02x;", static_cast<unsigned int>(ch));
       ost << buffer;
     } else {
       ost << ch;
@@ -240,7 +241,7 @@ std::string cmCTest::DecodeURL(const std::string& in)
   for (const char* c = in.c_str(); *c; ++c) {
     if (*c == '%' && isxdigit(*(c + 1)) && isxdigit(*(c + 2))) {
       char buf[3] = { *(c + 1), *(c + 2), 0 };
-      out.append(1, char(strtoul(buf, CM_NULLPTR, 16)));
+      out.append(1, char(strtoul(buf, nullptr, 16)));
       c += 2;
     } else {
       out.append(1, *c);
@@ -252,6 +253,7 @@ std::string cmCTest::DecodeURL(const std::string& in)
 cmCTest::cmCTest()
 {
   this->LabelSummary = true;
+  this->SubprojectSummary = true;
   this->ParallelLevel = 1;
   this->ParallelLevelSetInCli = false;
   this->TestLoad = 0;
@@ -279,11 +281,11 @@ cmCTest::cmCTest()
   this->GlobalTimeout = 0;
   this->LastStopTimeout = 24 * 60 * 60;
   this->CompressXMLFiles = false;
-  this->CTestConfigFile = "";
-  this->ScheduleType = "";
-  this->StopTime = "";
+  this->CTestConfigFile.clear();
+  this->ScheduleType.clear();
+  this->StopTime.clear();
   this->NextDayStopTime = false;
-  this->OutputLogFile = CM_NULLPTR;
+  this->OutputLogFile = nullptr;
   this->OutputLogFileLastTag = -1;
   this->SuppressUpdatingCTestConfiguration = false;
   this->DartVersion = 1;
@@ -328,10 +330,8 @@ cmCTest::cmCTest()
   this->TestingHandlers["submit"] = new cmCTestSubmitHandler;
   this->TestingHandlers["upload"] = new cmCTestUploadHandler;
 
-  cmCTest::t_TestingHandlers::iterator it;
-  for (it = this->TestingHandlers.begin(); it != this->TestingHandlers.end();
-       ++it) {
-    it->second->SetCTestInstance(this);
+  for (auto& handler : this->TestingHandlers) {
+    handler.second->SetCTestInstance(this);
   }
 
   // Make sure we can capture the build tool output.
@@ -341,7 +341,7 @@ cmCTest::cmCTest()
 cmCTest::~cmCTest()
 {
   cmDeleteAll(this->TestingHandlers);
-  this->SetOutputLogFileName(CM_NULLPTR);
+  this->SetOutputLogFileName(nullptr);
 }
 
 void cmCTest::SetParallelLevel(int level)
@@ -421,9 +421,8 @@ int cmCTest::Initialize(const char* binary_dir, cmCTestStartCommand* command)
   cm.SetHomeOutputDirectory("");
   cm.GetCurrentSnapshot().SetDefaultDefinitions();
   cmGlobalGenerator gg(&cm);
-  CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(&gg, cm.GetCurrentSnapshot()));
-  if (!this->ReadCustomConfigurationFileTree(this->BinaryDir.c_str(),
-                                             mf.get())) {
+  cmMakefile mf(&gg, cm.GetCurrentSnapshot());
+  if (!this->ReadCustomConfigurationFileTree(this->BinaryDir.c_str(), &mf)) {
     cmCTestOptionalLog(
       this, DEBUG, "Cannot find custom configuration file tree" << std::endl,
       quiet);
@@ -462,7 +461,7 @@ int cmCTest::Initialize(const char* binary_dir, cmCTestStartCommand* command)
     std::string tag;
 
     if (createNewTag) {
-      time_t tctime = time(CM_NULLPTR);
+      time_t tctime = time(nullptr);
       if (this->TomorrowTag) {
         tctime += (24 * 60 * 60);
       }
@@ -477,7 +476,7 @@ int cmCTest::Initialize(const char* binary_dir, cmCTestStartCommand* command)
                &min);
         if (year != lctime->tm_year + 1900 || mon != lctime->tm_mon + 1 ||
             day != lctime->tm_mday) {
-          tag = "";
+          tag.clear();
         }
         std::string tagmode;
         if (cmSystemTools::GetLineFromStream(tfin, tagmode)) {
@@ -487,7 +486,7 @@ int cmCTest::Initialize(const char* binary_dir, cmCTestStartCommand* command)
         }
         tfin.close();
       }
-      if (tag.empty() || (CM_NULLPTR != command) || this->Parts[PartStart]) {
+      if (tag.empty() || (nullptr != command) || this->Parts[PartStart]) {
         cmCTestOptionalLog(
           this, DEBUG,
           "TestModel: " << this->GetTestModelString() << std::endl, quiet);
@@ -509,7 +508,7 @@ int cmCTest::Initialize(const char* binary_dir, cmCTestStartCommand* command)
           ofs << this->GetTestModelString() << std::endl;
         }
         ofs.close();
-        if (CM_NULLPTR == command) {
+        if (nullptr == command) {
           cmCTestOptionalLog(this, OUTPUT, "Create new tag: "
                                << tag << " - " << this->GetTestModelString()
                                << std::endl,
@@ -805,7 +804,7 @@ cmCTestGenericHandler* cmCTest::GetInitializedHandler(const char* handler)
   cmCTest::t_TestingHandlers::iterator it =
     this->TestingHandlers.find(handler);
   if (it == this->TestingHandlers.end()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   it->second->Initialize();
   return it->second;
@@ -816,7 +815,7 @@ cmCTestGenericHandler* cmCTest::GetHandler(const char* handler)
   cmCTest::t_TestingHandlers::iterator it =
     this->TestingHandlers.find(handler);
   if (it == this->TestingHandlers.end()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return it->second;
 }
@@ -970,17 +969,19 @@ int cmCTest::RunMakeCommand(const char* command, std::string& output,
   }
 
   std::vector<const char*> argv;
-  for (std::vector<std::string>::const_iterator a = args.begin();
-       a != args.end(); ++a) {
-    argv.push_back(a->c_str());
+  argv.reserve(args.size() + 1);
+  for (std::string const& a : args) {
+    argv.push_back(a.c_str());
   }
-  argv.push_back(CM_NULLPTR);
+  argv.push_back(nullptr);
 
-  output = "";
+  output.clear();
   cmCTestLog(this, HANDLER_VERBOSE_OUTPUT, "Run command:");
-  std::vector<const char*>::iterator ait;
-  for (ait = argv.begin(); ait != argv.end() && *ait; ++ait) {
-    cmCTestLog(this, HANDLER_VERBOSE_OUTPUT, " \"" << *ait << "\"");
+  for (char const* arg : argv) {
+    if (!arg) {
+      break;
+    }
+    cmCTestLog(this, HANDLER_VERBOSE_OUTPUT, " \"" << arg << "\"");
   }
   cmCTestLog(this, HANDLER_VERBOSE_OUTPUT, std::endl);
 
@@ -1004,11 +1005,11 @@ int cmCTest::RunMakeCommand(const char* command, std::string& output,
   cmCTestLog(this, HANDLER_PROGRESS_OUTPUT, "   Each . represents "
                << tick_len << " bytes of output" << std::endl
                << "    " << std::flush);
-  while (cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR)) {
+  while (cmsysProcess_WaitForData(cp, &data, &length, nullptr)) {
     processOutput.DecodeText(data, length, strdata);
-    for (size_t cc = 0; cc < strdata.size(); ++cc) {
-      if (strdata[cc] == 0) {
-        strdata[cc] = '\n';
+    for (char& cc : strdata) {
+      if (cc == 0) {
+        cc = '\n';
       }
     }
     output.append(strdata);
@@ -1040,7 +1041,7 @@ int cmCTest::RunMakeCommand(const char* command, std::string& output,
   cmCTestLog(this, HANDLER_PROGRESS_OUTPUT, " Size of output: "
                << int(double(output.size()) / 1024.0) << "K" << std::endl);
 
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
 
   int result = cmsysProcess_GetState(cp);
 
@@ -1104,27 +1105,27 @@ int cmCTest::RunTest(std::vector<const char*> argv, std::string* output,
     inst.SetStreams(&oss, &oss);
 
     std::vector<std::string> args;
-    for (unsigned int i = 0; i < argv.size(); ++i) {
-      if (argv[i]) {
+    for (char const* i : argv) {
+      if (i) {
         // make sure we pass the timeout in for any build and test
         // invocations. Since --build-generator is required this is a
         // good place to check for it, and to add the arguments in
-        if (strcmp(argv[i], "--build-generator") == 0 && timeout > 0) {
+        if (strcmp(i, "--build-generator") == 0 && timeout > 0) {
           args.push_back("--test-timeout");
           std::ostringstream msg;
           msg << timeout;
           args.push_back(msg.str());
         }
-        args.push_back(argv[i]);
+        args.push_back(i);
       }
     }
     if (log) {
       *log << "* Run internal CTest" << std::endl;
     }
 
-    CM_AUTO_PTR<cmSystemTools::SaveRestoreEnvironment> saveEnv;
+    std::unique_ptr<cmSystemTools::SaveRestoreEnvironment> saveEnv;
     if (modifyEnv) {
-      saveEnv.reset(new cmSystemTools::SaveRestoreEnvironment);
+      saveEnv = cm::make_unique<cmSystemTools::SaveRestoreEnvironment>();
       cmSystemTools::AppendEnv(*environment);
     }
 
@@ -1146,12 +1147,12 @@ int cmCTest::RunTest(std::vector<const char*> argv, std::string* output,
   }
   std::vector<char> tempOutput;
   if (output) {
-    *output = "";
+    output->clear();
   }
 
-  CM_AUTO_PTR<cmSystemTools::SaveRestoreEnvironment> saveEnv;
+  std::unique_ptr<cmSystemTools::SaveRestoreEnvironment> saveEnv;
   if (modifyEnv) {
-    saveEnv.reset(new cmSystemTools::SaveRestoreEnvironment);
+    saveEnv = cm::make_unique<cmSystemTools::SaveRestoreEnvironment>();
     cmSystemTools::AppendEnv(*environment);
   }
 
@@ -1169,7 +1170,7 @@ int cmCTest::RunTest(std::vector<const char*> argv, std::string* output,
   int length;
   cmProcessOutput processOutput(encoding);
   std::string strdata;
-  while (cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR)) {
+  while (cmsysProcess_WaitForData(cp, &data, &length, nullptr)) {
     processOutput.DecodeText(data, length, strdata);
     if (output) {
       tempOutput.insert(tempOutput.end(), data, data + length);
@@ -1189,7 +1190,7 @@ int cmCTest::RunTest(std::vector<const char*> argv, std::string* output,
     }
   }
 
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
   processOutput.DecodeText(tempOutput, tempOutput);
   if (output && tempOutput.begin() != tempOutput.end()) {
     output->append(&*tempOutput.begin(), tempOutput.size());
@@ -1234,7 +1235,7 @@ std::string cmCTest::SafeBuildIdField(const std::string& value)
 {
   std::string safevalue(value);
 
-  if (safevalue != "") {
+  if (!safevalue.empty()) {
     // Disallow non-filename and non-space whitespace characters.
     // If they occur, replace them with ""
     //
@@ -1253,7 +1254,7 @@ std::string cmCTest::SafeBuildIdField(const std::string& value)
     }
   }
 
-  if (safevalue == "") {
+  if (safevalue.empty()) {
     safevalue = "(empty)";
   }
 
@@ -1345,9 +1346,8 @@ void cmCTest::AddSiteProperties(cmXMLWriter& xml)
       std::string l = labels;
       std::vector<std::string> args;
       cmSystemTools::ExpandListArgument(l, args);
-      for (std::vector<std::string>::iterator i = args.begin();
-           i != args.end(); ++i) {
-        xml.Element("Label", *i);
+      for (std::string const& i : args) {
+        xml.Element("Label", i);
       }
       xml.EndElement();
     }
@@ -1363,6 +1363,33 @@ void cmCTest::AddSiteProperties(cmXMLWriter& xml)
   }
 }
 
+void cmCTest::GenerateSubprojectsOutput(cmXMLWriter& xml)
+{
+  for (std::string const& subproj : this->GetLabelsForSubprojects()) {
+    xml.StartElement("Subproject");
+    xml.Attribute("name", subproj);
+    xml.Element("Label", subproj);
+    xml.EndElement(); // Subproject
+  }
+}
+
+std::vector<std::string> cmCTest::GetLabelsForSubprojects()
+{
+  std::string labelsForSubprojects =
+    this->GetCTestConfiguration("LabelsForSubprojects");
+  std::vector<std::string> subprojects;
+  cmSystemTools::ExpandListArgument(labelsForSubprojects, subprojects);
+
+  // sort the array
+  std::sort(subprojects.begin(), subprojects.end());
+  // remove duplicates
+  std::vector<std::string>::iterator new_end =
+    std::unique(subprojects.begin(), subprojects.end());
+  subprojects.erase(new_end, subprojects.end());
+
+  return subprojects;
+}
+
 void cmCTest::EndXML(cmXMLWriter& xml)
 {
   xml.EndElement(); // Site
@@ -1374,7 +1401,6 @@ int cmCTest::GenerateCTestNotesOutput(cmXMLWriter& xml,
 {
   std::string buildname =
     cmCTest::SafeBuildIdField(this->GetCTestConfiguration("BuildName"));
-  cmCTest::VectorOfStrings::const_iterator it;
   xml.StartDocument();
   xml.ProcessingInstruction("xml-stylesheet",
                             "type=\"text/xsl\" "
@@ -1390,15 +1416,15 @@ int cmCTest::GenerateCTestNotesOutput(cmXMLWriter& xml,
   this->AddSiteProperties(xml);
   xml.StartElement("Notes");
 
-  for (it = files.begin(); it != files.end(); it++) {
-    cmCTestLog(this, OUTPUT, "\tAdd file: " << *it << std::endl);
+  for (cmsys::String const& file : files) {
+    cmCTestLog(this, OUTPUT, "\tAdd file: " << file << std::endl);
     std::string note_time = this->CurrentTime();
     xml.StartElement("Note");
-    xml.Attribute("Name", *it);
+    xml.Attribute("Name", file);
     xml.Element("Time", cmSystemTools::GetTime());
     xml.Element("DateTime", note_time);
     xml.StartElement("Text");
-    cmsys::ifstream ifs(it->c_str());
+    cmsys::ifstream ifs(file.c_str());
     if (ifs) {
       std::string line;
       while (cmSystemTools::GetLineFromStream(ifs, line)) {
@@ -1407,9 +1433,9 @@ int cmCTest::GenerateCTestNotesOutput(cmXMLWriter& xml,
       }
       ifs.close();
     } else {
-      xml.Content("Problem reading file: " + *it + "\n");
+      xml.Content("Problem reading file: " + file + "\n");
       cmCTestLog(this, ERROR_MESSAGE, "Problem reading file: "
-                   << *it << " while creating notes" << std::endl);
+                   << file << " while creating notes" << std::endl);
     }
     xml.EndElement(); // Text
     xml.EndElement(); // Note
@@ -1491,14 +1517,13 @@ std::string cmCTest::Base64EncodeFile(std::string const& file)
 
 bool cmCTest::SubmitExtraFiles(const VectorOfStrings& files)
 {
-  VectorOfStrings::const_iterator it;
-  for (it = files.begin(); it != files.end(); ++it) {
-    if (!cmSystemTools::FileExists(it->c_str())) {
+  for (cmsys::String const& file : files) {
+    if (!cmSystemTools::FileExists(file.c_str())) {
       cmCTestLog(this, ERROR_MESSAGE, "Cannot find extra file: "
-                   << *it << " to submit." << std::endl;);
+                   << file << " to submit." << std::endl;);
       return false;
     }
-    this->AddSubmitFile(PartExtraFiles, it->c_str());
+    this->AddSubmitFile(PartExtraFiles, file.c_str());
   }
   return true;
 }
@@ -1735,7 +1760,7 @@ bool cmCTest::HandleCommandLineArguments(size_t& i,
 
   if (this->CheckArgument(arg, "--timeout") && i < args.size() - 1) {
     i++;
-    double timeout = (double)atof(args[i].c_str());
+    double timeout = atof(args[i].c_str());
     this->GlobalTimeout = timeout;
   }
 
@@ -1764,6 +1789,9 @@ bool cmCTest::HandleCommandLineArguments(size_t& i,
   if (this->CheckArgument(arg, "--no-label-summary")) {
     this->LabelSummary = false;
   }
+  if (this->CheckArgument(arg, "--no-subproject-summary")) {
+    this->SubprojectSummary = false;
+  }
   if (this->CheckArgument(arg, "-Q", "--quiet")) {
     this->Quiet = true;
   }
@@ -2069,10 +2097,8 @@ int cmCTest::Run(std::vector<std::string>& args, std::string* output)
     // pass the argument to all the handlers as well, but i may no longer be
     // set to what it was originally so I'm not sure this is working as
     // intended
-    cmCTest::t_TestingHandlers::iterator it;
-    for (it = this->TestingHandlers.begin(); it != this->TestingHandlers.end();
-         ++it) {
-      if (!it->second->ProcessCommandLineArguments(arg, i, args)) {
+    for (auto& handler : this->TestingHandlers) {
+      if (!handler.second->ProcessCommandLineArguments(arg, i, args)) {
         cmCTestLog(this, ERROR_MESSAGE,
                    "Problem parsing command line arguments within a handler");
         return 0;
@@ -2169,11 +2195,9 @@ int cmCTest::ExecuteTests()
     if (this->ExtraVerbose) {
       cmCTestLog(this, OUTPUT, "* Extra verbosity turned on" << std::endl);
     }
-    cmCTest::t_TestingHandlers::iterator it;
-    for (it = this->TestingHandlers.begin(); it != this->TestingHandlers.end();
-         ++it) {
-      it->second->SetVerbose(this->ExtraVerbose);
-      it->second->SetSubmitIndex(this->SubmitIndex);
+    for (auto& handler : this->TestingHandlers) {
+      handler.second->SetVerbose(this->ExtraVerbose);
+      handler.second->SetSubmitIndex(this->SubmitIndex);
     }
     this->GetHandler("script")->SetVerbose(this->Verbose);
     res = this->GetHandler("script")->ProcessHandler();
@@ -2187,14 +2211,12 @@ int cmCTest::ExecuteTests()
     // and Verbose is always on in this case
     this->ExtraVerbose = this->Verbose;
     this->Verbose = true;
-    cmCTest::t_TestingHandlers::iterator it;
-    for (it = this->TestingHandlers.begin(); it != this->TestingHandlers.end();
-         ++it) {
-      it->second->SetVerbose(this->Verbose);
-      it->second->SetSubmitIndex(this->SubmitIndex);
+    for (auto& handler : this->TestingHandlers) {
+      handler.second->SetVerbose(this->Verbose);
+      handler.second->SetSubmitIndex(this->SubmitIndex);
     }
     std::string cwd = cmSystemTools::GetCurrentWorkingDirectory();
-    if (!this->Initialize(cwd.c_str(), CM_NULLPTR)) {
+    if (!this->Initialize(cwd.c_str(), nullptr)) {
       res = 12;
       cmCTestLog(this, ERROR_MESSAGE, "Problem initializing the dashboard."
                    << std::endl);
@@ -2292,13 +2314,11 @@ int cmCTest::ReadCustomConfigurationFileTree(const char* dir, cmMakefile* mf)
   }
 
   if (found) {
-    cmCTest::t_TestingHandlers::iterator it;
-    for (it = this->TestingHandlers.begin(); it != this->TestingHandlers.end();
-         ++it) {
-      cmCTestLog(this, DEBUG,
-                 "* Read custom CTest configuration vectors for handler: "
-                   << it->first << " (" << it->second << ")" << std::endl);
-      it->second->PopulateCustomVectors(mf);
+    for (auto& handler : this->TestingHandlers) {
+      cmCTestLog(
+        this, DEBUG, "* Read custom CTest configuration vectors for handler: "
+          << handler.first << " (" << handler.second << ")" << std::endl);
+      handler.second->PopulateCustomVectors(mf);
     }
   }
 
@@ -2317,9 +2337,8 @@ void cmCTest::PopulateCustomVector(cmMakefile* mf, const std::string& def,
   vec.clear();
   cmSystemTools::ExpandListArgument(dval, vec);
 
-  for (std::vector<std::string>::const_iterator it = vec.begin();
-       it != vec.end(); ++it) {
-    cmCTestLog(this, DEBUG, "  -- " << *it << std::endl);
+  for (std::string const& it : vec) {
+    cmCTestLog(this, DEBUG, "  -- " << it << std::endl);
   }
 }
 
@@ -2352,7 +2371,7 @@ std::string cmCTest::GetShortPathToFile(const char* cfname)
   bool inBld = bldRelpath.find("..") == std::string::npos;
   // TODO: Handle files with .. in their name
 
-  std::string* res = CM_NULLPTR;
+  std::string* res = nullptr;
 
   if (inSrc && inBld) {
     // If both have relative path with no dots, pick the shorter one
@@ -2402,7 +2421,7 @@ void cmCTest::EmptyCTestConfiguration()
 void cmCTest::DetermineNextDayStop()
 {
   struct tm* lctime;
-  time_t current_time = time(CM_NULLPTR);
+  time_t current_time = time(nullptr);
   lctime = gmtime(&current_time);
   int gm_hour = lctime->tm_hour;
   time_t gm_time = mktime(lctime);
@@ -2486,7 +2505,7 @@ bool cmCTest::GetProduceXML()
 const char* cmCTest::GetSpecificTrack()
 {
   if (this->SpecificTrack.empty()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return this->SpecificTrack.c_str();
 }
@@ -2494,7 +2513,7 @@ const char* cmCTest::GetSpecificTrack()
 void cmCTest::SetSpecificTrack(const char* track)
 {
   if (!track) {
-    this->SpecificTrack = "";
+    this->SpecificTrack.clear();
     return;
   }
   this->SpecificTrack = track;
@@ -2546,25 +2565,19 @@ bool cmCTest::SetCTestConfigurationFromCMakeVariable(
   return true;
 }
 
-bool cmCTest::RunCommand(const char* command, std::string* stdOut,
-                         std::string* stdErr, int* retVal, const char* dir,
-                         double timeout, Encoding encoding)
+bool cmCTest::RunCommand(std::vector<std::string> const& args,
+                         std::string* stdOut, std::string* stdErr, int* retVal,
+                         const char* dir, double timeout, Encoding encoding)
 {
-  std::vector<std::string> args = cmSystemTools::ParseArguments(command);
-
-  if (args.empty()) {
-    return false;
-  }
-
   std::vector<const char*> argv;
-  for (std::vector<std::string>::const_iterator a = args.begin();
-       a != args.end(); ++a) {
-    argv.push_back(a->c_str());
+  argv.reserve(args.size() + 1);
+  for (std::string const& a : args) {
+    argv.push_back(a.c_str());
   }
-  argv.push_back(CM_NULLPTR);
+  argv.push_back(nullptr);
 
-  *stdOut = "";
-  *stdErr = "";
+  stdOut->clear();
+  stdErr->clear();
 
   cmsysProcess* cp = cmsysProcess_New();
   cmsysProcess_SetCommand(cp, &*argv.begin());
@@ -2584,7 +2597,7 @@ bool cmCTest::RunCommand(const char* command, std::string* stdOut,
   int res;
   bool done = false;
   while (!done) {
-    res = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR);
+    res = cmsysProcess_WaitForData(cp, &data, &length, nullptr);
     switch (res) {
       case cmsysProcess_Pipe_STDOUT:
         tempOutput.insert(tempOutput.end(), data, data + length);
@@ -2608,7 +2621,7 @@ bool cmCTest::RunCommand(const char* command, std::string* stdOut,
     }
   }
 
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
   if (!tempOutput.empty()) {
     processOutput.DecodeText(tempOutput, tempOutput);
     stdOut->append(&*tempOutput.begin(), tempOutput.size());
@@ -2652,7 +2665,7 @@ void cmCTest::SetOutputLogFileName(const char* name)
 {
   if (this->OutputLogFile) {
     delete this->OutputLogFile;
-    this->OutputLogFile = CM_NULLPTR;
+    this->OutputLogFile = nullptr;
   }
   if (name) {
     this->OutputLogFile = new cmGeneratedFileStream(name);
@@ -2666,7 +2679,7 @@ static const char* cmCTestStringLogType[] = { "DEBUG",
                                               "HANDLER_VERBOSE_OUTPUT",
                                               "WARNING",
                                               "ERROR_MESSAGE",
-                                              CM_NULLPTR };
+                                              nullptr };
 
 #define cmCTestLogOutputFileLine(stream)                                      \
   if (this->ShowLineNumbers) {                                                \
diff --git a/Source/cmCTest.h b/Source/cmCTest.h
index 60f3295e7..dbd67dc68 100644
--- a/Source/cmCTest.h
+++ b/Source/cmCTest.h
@@ -3,7 +3,7 @@
 #ifndef cmCTest_h
 #define cmCTest_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmProcessOutput.h"
 #include "cmsys/String.hxx"
@@ -95,7 +95,7 @@ public:
   typedef std::set<std::string> SetOfStrings;
 
   /** Process Command line arguments */
-  int Run(std::vector<std::string>&, std::string* output = CM_NULLPTR);
+  int Run(std::vector<std::string>&, std::string* output = nullptr);
 
   /**
    * Initialize and finalize testing
@@ -245,15 +245,10 @@ public:
    * exit code will be stored. If the retVal is not specified and
    * the program exits with a code other than 0, then the this
    * function will return false.
-   *
-   * If the command has spaces in the path the caller MUST call
-   * cmSystemTools::ConvertToRunCommandPath on the command before passing
-   * it into this function or it will not work.  The command must be correctly
-   * escaped for this to with spaces.
    */
-  bool RunCommand(const char* command, std::string* stdOut,
-                  std::string* stdErr, int* retVal = CM_NULLPTR,
-                  const char* dir = CM_NULLPTR, double timeout = 0.0,
+  bool RunCommand(std::vector<std::string> const& args, std::string* stdOut,
+                  std::string* stdErr, int* retVal = nullptr,
+                  const char* dir = nullptr, double timeout = 0.0,
                   Encoding encoding = cmProcessOutput::Auto);
 
   /**
@@ -438,7 +433,9 @@ public:
     this->StreamErr = err;
   }
   void AddSiteProperties(cmXMLWriter& xml);
+
   bool GetLabelSummary() { return this->LabelSummary; }
+  bool GetSubprojectSummary() { return this->SubprojectSummary; }
 
   std::string GetCostDataFile();
 
@@ -453,6 +450,9 @@ public:
   /** Return true if test should run until fail */
   bool GetRepeatUntilFail() { return this->RepeatUntilFail; }
 
+  void GenerateSubprojectsOutput(cmXMLWriter& xml);
+  std::vector<std::string> GetLabelsForSubprojects();
+
 private:
   int RepeatTests;
   bool RepeatUntilFail;
@@ -464,6 +464,7 @@ private:
   bool ExtraVerbose;
   bool ProduceXML;
   bool LabelSummary;
+  bool SubprojectSummary;
   bool UseHTTP10;
   bool PrintLabels;
   bool Failover;
@@ -571,7 +572,7 @@ private:
 
   /** Check if the argument is the one specified */
   bool CheckArgument(const std::string& arg, const char* varg1,
-                     const char* varg2 = CM_NULLPTR);
+                     const char* varg2 = nullptr);
 
   /** Output errors from a test */
   void OutputTestErrors(std::vector<char> const& process_output);
diff --git a/Source/cmCacheManager.cxx b/Source/cmCacheManager.cxx
index 0b025ab6f..44095ec14 100644
--- a/Source/cmCacheManager.cxx
+++ b/Source/cmCacheManager.cxx
@@ -173,7 +173,7 @@ bool cmCacheManager::LoadCache(const std::string& path, bool internal,
 }
 
 const char* cmCacheManager::PersistentProperties[] = { "ADVANCED", "MODIFIED",
-                                                       "STRINGS", CM_NULLPTR };
+                                                       "STRINGS", nullptr };
 
 bool cmCacheManager::ReadPropertyEntry(std::string const& entryKey,
                                        CacheEntry& e)
@@ -297,10 +297,8 @@ bool cmCacheManager::SaveCache(const std::string& path)
   fout << "########################\n";
   fout << "\n";
 
-  for (std::map<std::string, CacheEntry>::const_iterator i =
-         this->Cache.begin();
-       i != this->Cache.end(); ++i) {
-    const CacheEntry& ce = (*i).second;
+  for (auto const& i : this->Cache) {
+    CacheEntry const& ce = i.second;
     cmStateEnums::CacheEntryType t = ce.Type;
     if (!ce.Initialized) {
       /*
@@ -315,7 +313,7 @@ bool cmCacheManager::SaveCache(const std::string& path)
       } else {
         cmCacheManager::OutputHelpString(fout, "Missing description");
       }
-      this->OutputKey(fout, i->first);
+      this->OutputKey(fout, i.first);
       fout << ":" << cmState::CacheEntryTypeToString(t) << "=";
       this->OutputValue(fout, ce.Value);
       fout << "\n\n";
@@ -440,7 +438,7 @@ cmCacheManager::CacheEntry* cmCacheManager::GetCacheEntry(
   if (i != this->Cache.end()) {
     return &i->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmCacheManager::CacheIterator cmCacheManager::GetCacheIterator(const char* key)
@@ -455,18 +453,16 @@ const char* cmCacheManager::GetInitializedCacheValue(
   if (i != this->Cache.end() && i->second.Initialized) {
     return i->second.Value.c_str();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmCacheManager::PrintCache(std::ostream& out) const
 {
   out << "=================================================" << std::endl;
   out << "CMakeCache Contents:" << std::endl;
-  for (std::map<std::string, CacheEntry>::const_iterator i =
-         this->Cache.begin();
-       i != this->Cache.end(); ++i) {
-    if ((*i).second.Type != cmStateEnums::INTERNAL) {
-      out << (*i).first << " = " << (*i).second.Value << std::endl;
+  for (auto const& i : this->Cache) {
+    if (i.second.Type != cmStateEnums::INTERNAL) {
+      out << i.first << " = " << i.second.Value << std::endl;
     }
   }
   out << "\n\n";
@@ -484,7 +480,7 @@ void cmCacheManager::AddCacheEntry(const std::string& key, const char* value,
     e.Value = value;
     e.Initialized = true;
   } else {
-    e.Value = "";
+    e.Value.clear();
   }
   e.Type = type;
   // make sure we only use unix style paths
@@ -494,11 +490,10 @@ void cmCacheManager::AddCacheEntry(const std::string& key, const char* value,
       cmSystemTools::ExpandListArgument(e.Value, paths);
       const char* sep = "";
       e.Value = "";
-      for (std::vector<std::string>::iterator i = paths.begin();
-           i != paths.end(); ++i) {
-        cmSystemTools::ConvertToUnixSlashes(*i);
+      for (std::string& i : paths) {
+        cmSystemTools::ConvertToUnixSlashes(i);
         e.Value += sep;
-        e.Value += *i;
+        e.Value += i;
         sep = ";";
       }
     } else {
@@ -548,7 +543,7 @@ void cmCacheManager::CacheIterator::SetValue(const char* value)
     entry->Value = value;
     entry->Initialized = true;
   } else {
-    entry->Value = "";
+    entry->Value.clear();
   }
 }
 
@@ -610,7 +605,7 @@ const char* cmCacheManager::CacheIterator::GetProperty(
   if (!this->IsAtEnd()) {
     return this->GetEntry().GetProperty(prop);
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmCacheManager::CacheIterator::SetProperty(const std::string& p,
@@ -647,5 +642,5 @@ void cmCacheManager::CacheIterator::SetProperty(const std::string& p, bool v)
 bool cmCacheManager::CacheIterator::PropertyExists(
   const std::string& prop) const
 {
-  return this->GetProperty(prop) != CM_NULLPTR;
+  return this->GetProperty(prop) != nullptr;
 }
diff --git a/Source/cmCacheManager.h b/Source/cmCacheManager.h
index c464311c6..e9e6570ef 100644
--- a/Source/cmCacheManager.h
+++ b/Source/cmCacheManager.h
@@ -117,7 +117,7 @@ public:
   void PrintCache(std::ostream&) const;
 
   ///! Get the iterator for an entry with a given key.
-  cmCacheManager::CacheIterator GetCacheIterator(const char* key = CM_NULLPTR);
+  cmCacheManager::CacheIterator GetCacheIterator(const char* key = nullptr);
 
   ///! Remove an entry from the cache
   void RemoveCacheEntry(const std::string& key);
@@ -132,7 +132,7 @@ public:
   {
     cmCacheManager::CacheIterator it = this->GetCacheIterator(key.c_str());
     if (it.IsAtEnd()) {
-      return CM_NULLPTR;
+      return nullptr;
     }
     return it.GetValue();
   }
@@ -175,8 +175,7 @@ public:
   void RemoveCacheEntryProperty(std::string const& key,
                                 std::string const& propName)
   {
-    this->GetCacheIterator(key.c_str())
-      .SetProperty(propName, (void*)CM_NULLPTR);
+    this->GetCacheIterator(key.c_str()).SetProperty(propName, nullptr);
   }
 
   void AppendCacheEntryProperty(std::string const& key,
diff --git a/Source/cmCallVisualStudioMacro.h b/Source/cmCallVisualStudioMacro.h
index ad35d306a..fdc9e6646 100644
--- a/Source/cmCallVisualStudioMacro.h
+++ b/Source/cmCallVisualStudioMacro.h
@@ -3,7 +3,7 @@
 #ifndef cmCallVisualStudioMacro_h
 #define cmCallVisualStudioMacro_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
diff --git a/Source/cmCommand.h b/Source/cmCommand.h
index ad72fe208..2cc0b88ec 100644
--- a/Source/cmCommand.h
+++ b/Source/cmCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmCommand_h
 #define cmCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -31,7 +31,7 @@ public:
    * Construct the command. By default it has no makefile.
    */
   cmCommand()
-    : Makefile(CM_NULLPTR)
+    : Makefile(nullptr)
   {
   }
 
diff --git a/Source/cmCommandArgumentParserHelper.cxx b/Source/cmCommandArgumentParserHelper.cxx
index 4eb4531f6..6ae58d67a 100644
--- a/Source/cmCommandArgumentParserHelper.cxx
+++ b/Source/cmCommandArgumentParserHelper.cxx
@@ -19,7 +19,7 @@ cmCommandArgumentParserHelper::cmCommandArgumentParserHelper()
   this->WarnUninitialized = false;
   this->CheckSystemVars = false;
   this->FileLine = -1;
-  this->FileName = CM_NULLPTR;
+  this->FileName = nullptr;
   this->RemoveEmpty = true;
   this->EmptyVariable[0] = 0;
   strcpy(this->DCURLYVariable, "${");
@@ -88,13 +88,13 @@ char* cmCommandArgumentParserHelper::ExpandSpecialVariable(const char* key,
   e << "Syntax $" << key << "{} is not supported.  "
     << "Only ${}, $ENV{}, and $CACHE{} are allowed.";
   this->SetError(e.str());
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 char* cmCommandArgumentParserHelper::ExpandVariable(const char* var)
 {
   if (!var) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   if (this->FileLine >= 0 && strcmp(var, "CMAKE_CURRENT_LIST_LINE") == 0) {
     std::ostringstream ostr;
@@ -117,7 +117,7 @@ char* cmCommandArgumentParserHelper::ExpandVariable(const char* var)
         this->Makefile->IssueMessage(cmake::AUTHOR_WARNING, msg.str());
       }
     }
-    return CM_NULLPTR;
+    return nullptr;
   }
   if (this->EscapeQuotes && value) {
     return this->AddString(cmSystemTools::EscapeQuotes(value));
@@ -169,7 +169,7 @@ char* cmCommandArgumentParserHelper::CombineUnions(char* in1, char* in2)
 void cmCommandArgumentParserHelper::AllocateParserType(
   cmCommandArgumentParserHelper::ParserType* pt, const char* str, int len)
 {
-  pt->str = CM_NULLPTR;
+  pt->str = nullptr;
   if (len == 0) {
     len = static_cast<int>(strlen(str));
   }
@@ -234,7 +234,7 @@ int cmCommandArgumentParserHelper::ParseString(const char* str, int verb)
   this->InputBufferPos = 0;
   this->CurrentLine = 0;
 
-  this->Result = "";
+  this->Result.clear();
 
   yyscan_t yyscanner;
   cmCommandArgument_yylex_init(&yyscanner);
@@ -258,8 +258,8 @@ int cmCommandArgumentParserHelper::ParseString(const char* str, int verb)
 void cmCommandArgumentParserHelper::CleanupParser()
 {
   std::vector<char*>::iterator sit;
-  for (sit = this->Variables.begin(); sit != this->Variables.end(); ++sit) {
-    delete[] * sit;
+  for (char* var : this->Variables) {
+    delete[] var;
   }
   this->Variables.erase(this->Variables.begin(), this->Variables.end());
 }
@@ -298,7 +298,7 @@ void cmCommandArgumentParserHelper::SetMakefile(const cmMakefile* mf)
 void cmCommandArgumentParserHelper::SetResult(const char* value)
 {
   if (!value) {
-    this->Result = "";
+    this->Result.clear();
     return;
   }
   this->Result = value;
diff --git a/Source/cmCommandArgumentParserHelper.h b/Source/cmCommandArgumentParserHelper.h
index 465ca9e28..cb2a39074 100644
--- a/Source/cmCommandArgumentParserHelper.h
+++ b/Source/cmCommandArgumentParserHelper.h
@@ -3,7 +3,7 @@
 #ifndef cmCommandArgumentParserHelper_h
 #define cmCommandArgumentParserHelper_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
diff --git a/Source/cmCommandArgumentsHelper.cxx b/Source/cmCommandArgumentsHelper.cxx
index babddbe94..968b17cb9 100644
--- a/Source/cmCommandArgumentsHelper.cxx
+++ b/Source/cmCommandArgumentsHelper.cxx
@@ -11,11 +11,11 @@ cmCommandArgument::cmCommandArgument(cmCommandArgumentsHelper* args,
   , ArgumentsBeforeEmpty(true)
   , CurrentIndex(0)
 {
-  if (args != CM_NULLPTR) {
+  if (args != nullptr) {
     args->AddArgument(this);
   }
 
-  if (this->Group != CM_NULLPTR) {
+  if (this->Group != nullptr) {
     this->Group->ContainedArguments.push_back(this);
   }
 }
@@ -35,7 +35,7 @@ void cmCommandArgument::Follows(const cmCommandArgument* arg)
 
 void cmCommandArgument::FollowsGroup(const cmCommandArgumentGroup* group)
 {
-  if (group != CM_NULLPTR) {
+  if (group != nullptr) {
     this->ArgumentsBeforeEmpty = false;
     this->ArgumentsBefore.insert(group->ContainedArguments.begin(),
                                  group->ContainedArguments.end());
@@ -52,7 +52,7 @@ bool cmCommandArgument::MayFollow(const cmCommandArgument* current) const
 
 bool cmCommandArgument::KeyMatches(const std::string& key) const
 {
-  if ((this->Key == CM_NULLPTR) || (this->Key[0] == '\0')) {
+  if ((this->Key == nullptr) || (this->Key[0] == '\0')) {
     return true;
   }
   return (key == this->Key);
@@ -60,12 +60,10 @@ bool cmCommandArgument::KeyMatches(const std::string& key) const
 
 void cmCommandArgument::ApplyOwnGroup()
 {
-  if (this->Group != CM_NULLPTR) {
-    for (std::vector<cmCommandArgument*>::const_iterator it =
-           this->Group->ContainedArguments.begin();
-         it != this->Group->ContainedArguments.end(); ++it) {
-      if (*it != this) {
-        this->ArgumentsBefore.insert(*it);
+  if (this->Group != nullptr) {
+    for (cmCommandArgument* cargs : this->Group->ContainedArguments) {
+      if (cargs != this) {
+        this->ArgumentsBefore.insert(cargs);
       }
     }
   }
@@ -88,9 +86,9 @@ cmCAStringVector::cmCAStringVector(cmCommandArgumentsHelper* args,
                                    const char* key,
                                    cmCommandArgumentGroup* group)
   : cmCommandArgument(args, key, group)
-  , Ignore(CM_NULLPTR)
+  , Ignore(nullptr)
 {
-  if ((key == CM_NULLPTR) || (*key == 0)) {
+  if ((key == nullptr) || (*key == 0)) {
     this->DataStart = 0;
   } else {
     this->DataStart = 1;
@@ -100,7 +98,7 @@ cmCAStringVector::cmCAStringVector(cmCommandArgumentsHelper* args,
 bool cmCAStringVector::DoConsume(const std::string& arg, unsigned int index)
 {
   if (index >= this->DataStart) {
-    if ((this->Ignore == CM_NULLPTR) || (arg != this->Ignore)) {
+    if ((this->Ignore == nullptr) || (arg != this->Ignore)) {
       this->Vector.push_back(arg);
     }
   }
@@ -117,7 +115,7 @@ cmCAString::cmCAString(cmCommandArgumentsHelper* args, const char* key,
                        cmCommandArgumentGroup* group)
   : cmCommandArgument(args, key, group)
 {
-  if ((key == CM_NULLPTR) || (*key == 0)) {
+  if ((key == nullptr) || (*key == 0)) {
     this->DataStart = 0;
   } else {
     this->DataStart = 1;
@@ -135,7 +133,7 @@ bool cmCAString::DoConsume(const std::string& arg, unsigned int index)
 
 void cmCAString::DoReset()
 {
-  this->String = "";
+  this->String.clear();
 }
 
 cmCAEnabler::cmCAEnabler(cmCommandArgumentsHelper* args, const char* key,
@@ -180,60 +178,50 @@ void cmCADisabler::DoReset()
 
 void cmCommandArgumentGroup::Follows(const cmCommandArgument* arg)
 {
-  for (std::vector<cmCommandArgument*>::iterator it =
-         this->ContainedArguments.begin();
-       it != this->ContainedArguments.end(); ++it) {
-    (*it)->Follows(arg);
+  for (cmCommandArgument* ca : this->ContainedArguments) {
+    ca->Follows(arg);
   }
 }
 
 void cmCommandArgumentGroup::FollowsGroup(const cmCommandArgumentGroup* group)
 {
-  for (std::vector<cmCommandArgument*>::iterator it =
-         this->ContainedArguments.begin();
-       it != this->ContainedArguments.end(); ++it) {
-    (*it)->FollowsGroup(group);
+  for (cmCommandArgument* ca : this->ContainedArguments) {
+    ca->FollowsGroup(group);
   }
 }
 
 void cmCommandArgumentsHelper::Parse(const std::vector<std::string>* args,
                                      std::vector<std::string>* unconsumedArgs)
 {
-  if (args == CM_NULLPTR) {
+  if (args == nullptr) {
     return;
   }
 
-  for (std::vector<cmCommandArgument*>::iterator argIt =
-         this->Arguments.begin();
-       argIt != this->Arguments.end(); ++argIt) {
-    (*argIt)->ApplyOwnGroup();
-    (*argIt)->Reset();
+  for (cmCommandArgument* ca : this->Arguments) {
+    ca->ApplyOwnGroup();
+    ca->Reset();
   }
 
-  cmCommandArgument* activeArgument = CM_NULLPTR;
-  const cmCommandArgument* previousArgument = CM_NULLPTR;
-  for (std::vector<std::string>::const_iterator it = args->begin();
-       it != args->end(); ++it) {
-    for (std::vector<cmCommandArgument*>::iterator argIt =
-           this->Arguments.begin();
-         argIt != this->Arguments.end(); ++argIt) {
-      if ((*argIt)->KeyMatches(*it) &&
-          ((*argIt)->MayFollow(previousArgument))) {
-        activeArgument = *argIt;
+  cmCommandArgument* activeArgument = nullptr;
+  const cmCommandArgument* previousArgument = nullptr;
+  for (std::string const& it : *args) {
+    for (cmCommandArgument* ca : this->Arguments) {
+      if (ca->KeyMatches(it) && (ca->MayFollow(previousArgument))) {
+        activeArgument = ca;
         activeArgument->Activate();
         break;
       }
     }
 
     if (activeArgument) {
-      bool argDone = activeArgument->Consume(*it);
+      bool argDone = activeArgument->Consume(it);
       previousArgument = activeArgument;
       if (argDone) {
-        activeArgument = CM_NULLPTR;
+        activeArgument = nullptr;
       }
     } else {
-      if (unconsumedArgs != CM_NULLPTR) {
-        unconsumedArgs->push_back(*it);
+      if (unconsumedArgs != nullptr) {
+        unconsumedArgs->push_back(it);
       }
     }
   }
diff --git a/Source/cmCommandArgumentsHelper.h b/Source/cmCommandArgumentsHelper.h
index 44db374d6..d3f102c29 100644
--- a/Source/cmCommandArgumentsHelper.h
+++ b/Source/cmCommandArgumentsHelper.h
@@ -3,7 +3,7 @@
 #ifndef cmCommandArgumentsHelper_h
 #define cmCommandArgumentsHelper_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <set>
 #include <string>
@@ -38,7 +38,7 @@ class cmCommandArgument
 {
 public:
   cmCommandArgument(cmCommandArgumentsHelper* args, const char* key,
-                    cmCommandArgumentGroup* group = CM_NULLPTR);
+                    cmCommandArgumentGroup* group = nullptr);
   virtual ~cmCommandArgument() {}
 
   /// this argument may follow after arg. 0 means it comes first.
@@ -90,7 +90,7 @@ class cmCAStringVector : public cmCommandArgument
 {
 public:
   cmCAStringVector(cmCommandArgumentsHelper* args, const char* key,
-                   cmCommandArgumentGroup* group = CM_NULLPTR);
+                   cmCommandArgumentGroup* group = nullptr);
 
   /// Return the vector of strings
   const std::vector<std::string>& GetVector() const { return this->Vector; }
@@ -103,8 +103,8 @@ private:
   unsigned int DataStart;
   const char* Ignore;
   cmCAStringVector();
-  bool DoConsume(const std::string& arg, unsigned int index) CM_OVERRIDE;
-  void DoReset() CM_OVERRIDE;
+  bool DoConsume(const std::string& arg, unsigned int index) override;
+  void DoReset() override;
 };
 
 /** cmCAString is to be used for arguments which consist of one value,
@@ -113,7 +113,7 @@ class cmCAString : public cmCommandArgument
 {
 public:
   cmCAString(cmCommandArgumentsHelper* args, const char* key,
-             cmCommandArgumentGroup* group = CM_NULLPTR);
+             cmCommandArgumentGroup* group = nullptr);
 
   /// Return the string
   const std::string& GetString() const { return this->String; }
@@ -121,8 +121,8 @@ public:
 private:
   std::string String;
   unsigned int DataStart;
-  bool DoConsume(const std::string& arg, unsigned int index) CM_OVERRIDE;
-  void DoReset() CM_OVERRIDE;
+  bool DoConsume(const std::string& arg, unsigned int index) override;
+  void DoReset() override;
   cmCAString();
 };
 
@@ -132,14 +132,14 @@ class cmCAEnabler : public cmCommandArgument
 {
 public:
   cmCAEnabler(cmCommandArgumentsHelper* args, const char* key,
-              cmCommandArgumentGroup* group = CM_NULLPTR);
+              cmCommandArgumentGroup* group = nullptr);
 
   /// Has it been enabled ?
   bool IsEnabled() const { return this->Enabled; }
 private:
   bool Enabled;
-  bool DoConsume(const std::string& arg, unsigned int index) CM_OVERRIDE;
-  void DoReset() CM_OVERRIDE;
+  bool DoConsume(const std::string& arg, unsigned int index) override;
+  void DoReset() override;
   cmCAEnabler();
 };
 
@@ -149,14 +149,14 @@ class cmCADisabler : public cmCommandArgument
 {
 public:
   cmCADisabler(cmCommandArgumentsHelper* args, const char* key,
-               cmCommandArgumentGroup* group = CM_NULLPTR);
+               cmCommandArgumentGroup* group = nullptr);
 
   /// Is it still enabled ?
   bool IsEnabled() const { return this->Enabled; }
 private:
   bool Enabled;
-  bool DoConsume(const std::string& arg, unsigned int index) CM_OVERRIDE;
-  void DoReset() CM_OVERRIDE;
+  bool DoConsume(const std::string& arg, unsigned int index) override;
+  void DoReset() override;
   cmCADisabler();
 };
 
diff --git a/Source/cmCommands.cxx b/Source/cmCommands.cxx
index e1d8ef143..8a7d9bde7 100644
--- a/Source/cmCommands.cxx
+++ b/Source/cmCommands.cxx
@@ -42,6 +42,7 @@
 #include "cmIfCommand.h"
 #include "cmIncludeCommand.h"
 #include "cmIncludeDirectoryCommand.h"
+#include "cmIncludeGuardCommand.h"
 #include "cmIncludeRegularExpressionCommand.h"
 #include "cmInstallCommand.h"
 #include "cmInstallFilesCommand.h"
@@ -67,7 +68,12 @@
 #include "cmSiteNameCommand.h"
 #include "cmStringCommand.h"
 #include "cmSubdirCommand.h"
+#include "cmTargetCompileDefinitionsCommand.h"
+#include "cmTargetCompileFeaturesCommand.h"
+#include "cmTargetCompileOptionsCommand.h"
+#include "cmTargetIncludeDirectoriesCommand.h"
 #include "cmTargetLinkLibrariesCommand.h"
+#include "cmTargetSourcesCommand.h"
 #include "cmTryCompileCommand.h"
 #include "cmTryRunCommand.h"
 #include "cmUnsetCommand.h"
@@ -93,11 +99,6 @@
 #include "cmRemoveDefinitionsCommand.h"
 #include "cmSourceGroupCommand.h"
 #include "cmSubdirDependsCommand.h"
-#include "cmTargetCompileDefinitionsCommand.h"
-#include "cmTargetCompileFeaturesCommand.h"
-#include "cmTargetCompileOptionsCommand.h"
-#include "cmTargetIncludeDirectoriesCommand.h"
-#include "cmTargetSourcesCommand.h"
 #include "cmUseMangledMesaCommand.h"
 #include "cmUtilitySourceCommand.h"
 #include "cmVariableRequiresCommand.h"
@@ -132,6 +133,7 @@ void GetScriptingCommands(cmState* state)
   state->AddBuiltinCommand("get_property", new cmGetPropertyCommand);
   state->AddBuiltinCommand("if", new cmIfCommand);
   state->AddBuiltinCommand("include", new cmIncludeCommand);
+  state->AddBuiltinCommand("include_guard", new cmIncludeGuardCommand);
   state->AddBuiltinCommand("list", new cmListCommand);
   state->AddBuiltinCommand("macro", new cmMacroCommand);
   state->AddBuiltinCommand("make_directory", new cmMakeDirectoryCommand);
@@ -145,8 +147,6 @@ void GetScriptingCommands(cmState* state)
   state->AddBuiltinCommand("separate_arguments",
                            new cmSeparateArgumentsCommand);
   state->AddBuiltinCommand("set", new cmSetCommand);
-  state->AddBuiltinCommand("set_directory_properties",
-                           new cmSetDirectoryPropertiesCommand);
   state->AddBuiltinCommand("set_property", new cmSetPropertyCommand);
   state->AddBuiltinCommand("site_name", new cmSiteNameCommand);
   state->AddBuiltinCommand("string", new cmStringCommand);
@@ -229,6 +229,8 @@ void GetProjectCommands(cmState* state)
   state->AddBuiltinCommand("install_targets", new cmInstallTargetsCommand);
   state->AddBuiltinCommand("link_directories", new cmLinkDirectoriesCommand);
   state->AddBuiltinCommand("project", new cmProjectCommand);
+  state->AddBuiltinCommand("set_directory_properties",
+                           new cmSetDirectoryPropertiesCommand);
   state->AddBuiltinCommand("set_source_files_properties",
                            new cmSetSourceFilesPropertiesCommand);
   state->AddBuiltinCommand("set_target_properties",
@@ -236,8 +238,17 @@ void GetProjectCommands(cmState* state)
   state->AddBuiltinCommand("set_tests_properties",
                            new cmSetTestsPropertiesCommand);
   state->AddBuiltinCommand("subdirs", new cmSubdirCommand);
+  state->AddBuiltinCommand("target_compile_definitions",
+                           new cmTargetCompileDefinitionsCommand);
+  state->AddBuiltinCommand("target_compile_features",
+                           new cmTargetCompileFeaturesCommand);
+  state->AddBuiltinCommand("target_compile_options",
+                           new cmTargetCompileOptionsCommand);
+  state->AddBuiltinCommand("target_include_directories",
+                           new cmTargetIncludeDirectoriesCommand);
   state->AddBuiltinCommand("target_link_libraries",
                            new cmTargetLinkLibrariesCommand);
+  state->AddBuiltinCommand("target_sources", new cmTargetSourcesCommand);
   state->AddBuiltinCommand("try_compile", new cmTryCompileCommand);
   state->AddBuiltinCommand("try_run", new cmTryRunCommand);
 
@@ -258,15 +269,6 @@ void GetProjectCommands(cmState* state)
   state->AddBuiltinCommand("remove_definitions",
                            new cmRemoveDefinitionsCommand);
   state->AddBuiltinCommand("source_group", new cmSourceGroupCommand);
-  state->AddBuiltinCommand("target_compile_definitions",
-                           new cmTargetCompileDefinitionsCommand);
-  state->AddBuiltinCommand("target_compile_features",
-                           new cmTargetCompileFeaturesCommand);
-  state->AddBuiltinCommand("target_compile_options",
-                           new cmTargetCompileOptionsCommand);
-  state->AddBuiltinCommand("target_include_directories",
-                           new cmTargetIncludeDirectoriesCommand);
-  state->AddBuiltinCommand("target_sources", new cmTargetSourcesCommand);
 
   state->AddDisallowedCommand(
     "export_library_dependencies", new cmExportLibraryDependenciesCommand,
diff --git a/Source/cmCommonTargetGenerator.cxx b/Source/cmCommonTargetGenerator.cxx
index 391d65c40..1189606fc 100644
--- a/Source/cmCommonTargetGenerator.cxx
+++ b/Source/cmCommonTargetGenerator.cxx
@@ -2,7 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCommonTargetGenerator.h"
 
-#include "cmConfigure.h"
 #include <set>
 #include <sstream>
 #include <utility>
@@ -22,10 +21,11 @@
 cmCommonTargetGenerator::cmCommonTargetGenerator(cmGeneratorTarget* gt)
   : GeneratorTarget(gt)
   , Makefile(gt->Makefile)
-  , LocalGenerator(static_cast<cmLocalCommonGenerator*>(gt->LocalGenerator))
-  , GlobalGenerator(static_cast<cmGlobalCommonGenerator*>(
+  , LocalCommonGenerator(
+      static_cast<cmLocalCommonGenerator*>(gt->LocalGenerator))
+  , GlobalCommonGenerator(static_cast<cmGlobalCommonGenerator*>(
       gt->LocalGenerator->GetGlobalGenerator()))
-  , ConfigName(LocalGenerator->GetConfigName())
+  , ConfigName(LocalCommonGenerator->GetConfigName())
 {
 }
 
@@ -62,10 +62,10 @@ void cmCommonTargetGenerator::AddModuleDefinitionFlag(
   // Append the flag and value.  Use ConvertToLinkReference to help
   // vs6's "cl -link" pass it to the linker.
   std::string flag = defFileFlag;
-  flag += this->LocalGenerator->ConvertToOutputFormat(
+  flag += this->LocalCommonGenerator->ConvertToOutputFormat(
     linkLineComputer->ConvertToLinkReference(mdi->DefFile),
     cmOutputConverter::SHELL);
-  this->LocalGenerator->AppendFlags(flags, flag);
+  this->LocalCommonGenerator->AppendFlags(flags, flag);
 }
 
 void cmCommonTargetGenerator::AppendFortranFormatFlags(
@@ -78,7 +78,7 @@ void cmCommonTargetGenerator::AppendFortranFormatFlags(
     const char* tgtfmt = this->GeneratorTarget->GetProperty("Fortran_FORMAT");
     format = cmOutputConverter::GetFortranFormat(tgtfmt);
   }
-  const char* var = CM_NULLPTR;
+  const char* var = nullptr;
   switch (format) {
     case cmOutputConverter::FortranFormatFixed:
       var = "CMAKE_Fortran_FORMAT_FIXED_FLAG";
@@ -90,8 +90,8 @@ void cmCommonTargetGenerator::AppendFortranFormatFlags(
       break;
   }
   if (var) {
-    this->LocalGenerator->AppendFlags(flags,
-                                      this->Makefile->GetDefinition(var));
+    this->LocalCommonGenerator->AppendFlags(
+      flags, this->Makefile->GetDefinition(var));
   }
 }
 
@@ -101,8 +101,8 @@ std::string cmCommonTargetGenerator::GetFlags(const std::string& l)
   if (i == this->FlagsByLanguage.end()) {
     std::string flags;
 
-    this->LocalGenerator->GetTargetCompileFlags(this->GeneratorTarget,
-                                                this->ConfigName, l, flags);
+    this->LocalCommonGenerator->GetTargetCompileFlags(
+      this->GeneratorTarget, this->ConfigName, l, flags);
 
     ByLanguageMap::value_type entry(l, flags);
     i = this->FlagsByLanguage.insert(entry).first;
@@ -115,11 +115,11 @@ std::string cmCommonTargetGenerator::GetDefines(const std::string& l)
   ByLanguageMap::iterator i = this->DefinesByLanguage.find(l);
   if (i == this->DefinesByLanguage.end()) {
     std::set<std::string> defines;
-    this->LocalGenerator->GetTargetDefines(this->GeneratorTarget,
-                                           this->ConfigName, l, defines);
+    this->LocalCommonGenerator->GetTargetDefines(this->GeneratorTarget,
+                                                 this->ConfigName, l, defines);
 
     std::string definesString;
-    this->LocalGenerator->JoinDefines(defines, definesString, l);
+    this->LocalCommonGenerator->JoinDefines(defines, definesString, l);
 
     ByLanguageMap::value_type entry(l, definesString);
     i = this->DefinesByLanguage.insert(entry).first;
@@ -147,10 +147,8 @@ std::vector<std::string> cmCommonTargetGenerator::GetLinkedTargetDirectories()
   if (cmComputeLinkInformation* cli =
         this->GeneratorTarget->GetLinkInformation(this->ConfigName)) {
     cmComputeLinkInformation::ItemVector const& items = cli->GetItems();
-    for (cmComputeLinkInformation::ItemVector::const_iterator i =
-           items.begin();
-         i != items.end(); ++i) {
-      cmGeneratorTarget const* linkee = i->Target;
+    for (auto const& item : items) {
+      cmGeneratorTarget const* linkee = item.Target;
       if (linkee && !linkee->IsImported()
           // We can ignore the INTERFACE_LIBRARY items because
           // Target->GetLinkInformation already processed their
@@ -196,11 +194,12 @@ std::string cmCommonTargetGenerator::GetManifests()
   this->GeneratorTarget->GetManifests(manifest_srcs, this->ConfigName);
 
   std::vector<std::string> manifests;
-  for (std::vector<cmSourceFile const*>::iterator mi = manifest_srcs.begin();
-       mi != manifest_srcs.end(); ++mi) {
-    manifests.push_back(this->LocalGenerator->ConvertToOutputFormat(
-      this->LocalGenerator->ConvertToRelativePath(
-        this->LocalGenerator->GetWorkingDirectory(), (*mi)->GetFullPath()),
+  manifests.reserve(manifest_srcs.size());
+  for (cmSourceFile const* manifest_src : manifest_srcs) {
+    manifests.push_back(this->LocalCommonGenerator->ConvertToOutputFormat(
+      this->LocalCommonGenerator->ConvertToRelativePath(
+        this->LocalCommonGenerator->GetWorkingDirectory(),
+        manifest_src->GetFullPath()),
       cmOutputConverter::SHELL));
   }
 
@@ -233,6 +232,6 @@ void cmCommonTargetGenerator::AppendOSXVerFlag(std::string& flags,
     // Append the flag since a non-zero version is specified.
     std::ostringstream vflag;
     vflag << flag << major << "." << minor << "." << patch;
-    this->LocalGenerator->AppendFlags(flags, vflag.str());
+    this->LocalCommonGenerator->AppendFlags(flags, vflag.str());
   }
 }
diff --git a/Source/cmCommonTargetGenerator.h b/Source/cmCommonTargetGenerator.h
index c36145fe2..6b0f74efd 100644
--- a/Source/cmCommonTargetGenerator.h
+++ b/Source/cmCommonTargetGenerator.h
@@ -37,8 +37,8 @@ protected:
 
   cmGeneratorTarget* GeneratorTarget;
   cmMakefile* Makefile;
-  cmLocalCommonGenerator* LocalGenerator;
-  cmGlobalCommonGenerator* GlobalGenerator;
+  cmLocalCommonGenerator* LocalCommonGenerator;
+  cmGlobalCommonGenerator* GlobalCommonGenerator;
   std::string ConfigName;
 
   void AppendFortranFormatFlags(std::string& flags,
diff --git a/Source/cmComputeComponentGraph.cxx b/Source/cmComputeComponentGraph.cxx
index a02d8854b..9ec98ae8e 100644
--- a/Source/cmComputeComponentGraph.cxx
+++ b/Source/cmComputeComponentGraph.cxx
@@ -57,8 +57,8 @@ void cmComputeComponentGraph::TarjanVisit(int i)
 
   // Follow outgoing edges.
   EdgeList const& nl = this->InputGraph[i];
-  for (EdgeList::const_iterator ni = nl.begin(); ni != nl.end(); ++ni) {
-    int j = *ni;
+  for (cmGraphEdge const& ni : nl) {
+    int j = ni;
 
     // Ignore edges to nodes that have been reached by a previous DFS
     // walk.  Since we did not reach the current node from that walk
@@ -119,14 +119,14 @@ void cmComputeComponentGraph::TransferEdges()
   for (int i = 0; i < n; ++i) {
     int i_component = this->TarjanComponents[i];
     EdgeList const& nl = this->InputGraph[i];
-    for (EdgeList::const_iterator ni = nl.begin(); ni != nl.end(); ++ni) {
-      int j = *ni;
+    for (cmGraphEdge const& ni : nl) {
+      int j = ni;
       int j_component = this->TarjanComponents[j];
       if (i_component != j_component) {
         // We do not attempt to combine duplicate edges, but instead
         // store the inter-component edges with suitable multiplicity.
         this->ComponentGraph[i_component].push_back(
-          cmGraphEdge(j_component, ni->IsStrong()));
+          cmGraphEdge(j_component, ni.IsStrong()));
       }
     }
   }
diff --git a/Source/cmComputeLinkDepends.cxx b/Source/cmComputeLinkDepends.cxx
index 9c516ee8d..d9efc2e33 100644
--- a/Source/cmComputeLinkDepends.cxx
+++ b/Source/cmComputeLinkDepends.cxx
@@ -194,7 +194,7 @@ cmComputeLinkDepends::cmComputeLinkDepends(const cmGeneratorTarget* target,
   this->OldLinkDirMode = false;
 
   // No computation has been done.
-  this->CCG = CM_NULLPTR;
+  this->CCG = nullptr;
 }
 
 cmComputeLinkDepends::~cmComputeLinkDepends()
@@ -286,7 +286,7 @@ std::map<std::string, int>::iterator cmComputeLinkDepends::AllocateLinkEntry(
   std::map<std::string, int>::iterator lei =
     this->LinkEntryIndex.insert(index_entry).first;
   this->EntryList.push_back(LinkEntry());
-  this->InferredDependSets.push_back(CM_NULLPTR);
+  this->InferredDependSets.push_back(nullptr);
   this->EntryConstraintGraph.push_back(EdgeList());
   return lei;
 }
@@ -314,7 +314,7 @@ int cmComputeLinkDepends::AddLinkEntry(cmLinkItem const& item)
   // If the item has dependencies queue it to follow them.
   if (entry.Target) {
     // Target dependencies are always known.  Follow them.
-    BFSEntry qe = { index, CM_NULLPTR };
+    BFSEntry qe = { index, nullptr };
     this->BFSQueue.push(qe);
   } else {
     // Look for an old-style <item>_LIB_DEPENDS variable.
@@ -357,10 +357,8 @@ void cmComputeLinkDepends::FollowLinkEntry(BFSEntry qe)
       this->FollowSharedDeps(depender_index, iface);
 
       // Support for CMP0003.
-      for (std::vector<cmLinkItem>::const_iterator oi =
-             iface->WrongConfigLibraries.begin();
-           oi != iface->WrongConfigLibraries.end(); ++oi) {
-        this->CheckWrongConfigItem(*oi);
+      for (cmLinkItem const& oi : iface->WrongConfigLibraries) {
+        this->CheckWrongConfigItem(oi);
       }
     }
   } else {
@@ -385,10 +383,9 @@ void cmComputeLinkDepends::FollowSharedDeps(int depender_index,
 void cmComputeLinkDepends::QueueSharedDependencies(
   int depender_index, std::vector<cmLinkItem> const& deps)
 {
-  for (std::vector<cmLinkItem>::const_iterator li = deps.begin();
-       li != deps.end(); ++li) {
+  for (cmLinkItem const& li : deps) {
     SharedDepEntry qe;
-    qe.Item = *li;
+    qe.Item = li;
     qe.DependerIndex = depender_index;
     this->SharedDepQueue.push(qe);
   }
@@ -445,25 +442,24 @@ void cmComputeLinkDepends::AddVarLinkEntries(int depender_index,
   std::vector<cmLinkItem> actual_libs;
   cmTargetLinkLibraryType llt = GENERAL_LibraryType;
   bool haveLLT = false;
-  for (std::vector<std::string>::const_iterator di = deplist.begin();
-       di != deplist.end(); ++di) {
-    if (*di == "debug") {
+  for (std::string const& d : deplist) {
+    if (d == "debug") {
       llt = DEBUG_LibraryType;
       haveLLT = true;
-    } else if (*di == "optimized") {
+    } else if (d == "optimized") {
       llt = OPTIMIZED_LibraryType;
       haveLLT = true;
-    } else if (*di == "general") {
+    } else if (d == "general") {
       llt = GENERAL_LibraryType;
       haveLLT = true;
-    } else if (!di->empty()) {
+    } else if (!d.empty()) {
       // If no explicit link type was given prior to this entry then
       // check if the entry has its own link type variable.  This is
       // needed for compatibility with dependency files generated by
       // the export_library_dependencies command from CMake 2.4 and
       // lower.
       if (!haveLLT) {
-        std::string var = *di;
+        std::string var = d;
         var += "_LINK_TYPE";
         if (const char* val = this->Makefile->GetDefinition(var)) {
           if (strcmp(val, "debug") == 0) {
@@ -476,10 +472,10 @@ void cmComputeLinkDepends::AddVarLinkEntries(int depender_index,
 
       // If the library is meant for this link type then use it.
       if (llt == GENERAL_LibraryType || llt == this->LinkType) {
-        cmLinkItem item(*di, this->FindTargetToLink(depender_index, *di));
+        cmLinkItem item(d, this->FindTargetToLink(depender_index, d));
         actual_libs.push_back(item);
       } else if (this->OldLinkDirMode) {
-        cmLinkItem item(*di, this->FindTargetToLink(depender_index, *di));
+        cmLinkItem item(d, this->FindTargetToLink(depender_index, d));
         this->CheckWrongConfigItem(item);
       }
 
@@ -499,10 +495,8 @@ void cmComputeLinkDepends::AddDirectLinkEntries()
   cmLinkImplementation const* impl =
     this->Target->GetLinkImplementation(this->Config);
   this->AddLinkEntries(-1, impl->Libraries);
-  for (std::vector<cmLinkItem>::const_iterator wi =
-         impl->WrongConfigLibraries.begin();
-       wi != impl->WrongConfigLibraries.end(); ++wi) {
-    this->CheckWrongConfigItem(*wi);
+  for (cmLinkItem const& wi : impl->WrongConfigLibraries) {
+    this->CheckWrongConfigItem(wi);
   }
 }
 
@@ -514,17 +508,16 @@ void cmComputeLinkDepends::AddLinkEntries(int depender_index,
   std::map<int, DependSet> dependSets;
 
   // Loop over the libraries linked directly by the depender.
-  for (typename std::vector<T>::const_iterator li = libs.begin();
-       li != libs.end(); ++li) {
+  for (T const& l : libs) {
     // Skip entries that will resolve to the target getting linked or
     // are empty.
-    cmLinkItem const& item = *li;
+    cmLinkItem const& item = l;
     if (item == this->Target->GetName() || item.empty()) {
       continue;
     }
 
     // Add a link entry for this item.
-    int dependee_index = this->AddLinkEntry(*li);
+    int dependee_index = this->AddLinkEntry(l);
 
     // The dependee must come after the depender.
     if (depender_index >= 0) {
@@ -535,16 +528,15 @@ void cmComputeLinkDepends::AddLinkEntries(int depender_index,
     }
 
     // Update the inferred dependencies for earlier items.
-    for (std::map<int, DependSet>::iterator dsi = dependSets.begin();
-         dsi != dependSets.end(); ++dsi) {
+    for (auto& dependSet : dependSets) {
       // Add this item to the inferred dependencies of other items.
       // Target items are never inferred dependees because unknown
       // items are outside libraries that should not be depending on
       // targets.
       if (!this->EntryList[dependee_index].Target &&
           !this->EntryList[dependee_index].IsFlag &&
-          dependee_index != dsi->first) {
-        dsi->second.insert(dependee_index);
+          dependee_index != dependSet.first) {
+        dependSet.second.insert(dependee_index);
       }
     }
 
@@ -556,9 +548,8 @@ void cmComputeLinkDepends::AddLinkEntries(int depender_index,
   }
 
   // Store the inferred dependency sets discovered for this list.
-  for (std::map<int, DependSet>::iterator dsi = dependSets.begin();
-       dsi != dependSets.end(); ++dsi) {
-    this->InferredDependSets[dsi->first]->push_back(dsi->second);
+  for (auto const& dependSet : dependSets) {
+    this->InferredDependSets[dependSet.first]->push_back(dependSet.second);
   }
 }
 
@@ -608,14 +599,14 @@ void cmComputeLinkDepends::InferDependencies()
 
 void cmComputeLinkDepends::CleanConstraintGraph()
 {
-  for (Graph::iterator i = this->EntryConstraintGraph.begin();
-       i != this->EntryConstraintGraph.end(); ++i) {
+  for (cmGraphEdgeList& edgeList : this->EntryConstraintGraph) {
     // Sort the outgoing edges for each graph node so that the
     // original order will be preserved as much as possible.
-    std::sort(i->begin(), i->end());
+    std::sort(edgeList.begin(), edgeList.end());
 
     // Make the edge list unique.
-    i->erase(std::unique(i->begin(), i->end()), i->end());
+    edgeList.erase(std::unique(edgeList.begin(), edgeList.end()),
+                   edgeList.end());
   }
 }
 
@@ -660,9 +651,8 @@ void cmComputeLinkDepends::OrderLinkEntires()
   }
 
   // Start with the original link line.
-  for (std::vector<int>::const_iterator i = this->OriginalEntries.begin();
-       i != this->OriginalEntries.end(); ++i) {
-    this->VisitEntry(*i);
+  for (int originalEntry : this->OriginalEntries) {
+    this->VisitEntry(originalEntry);
   }
 
   // Now explore anything left pending.  Since the component graph is
@@ -684,13 +674,12 @@ void cmComputeLinkDepends::DisplayComponents()
   for (unsigned int c = 0; c < components.size(); ++c) {
     fprintf(stderr, "Component (%u):\n", c);
     NodeList const& nl = components[c];
-    for (NodeList::const_iterator ni = nl.begin(); ni != nl.end(); ++ni) {
-      int i = *ni;
+    for (int i : nl) {
       fprintf(stderr, "  item %d [%s]\n", i, this->EntryList[i].Item.c_str());
     }
     EdgeList const& ol = this->CCG->GetComponentGraphEdges(c);
-    for (EdgeList::const_iterator oi = ol.begin(); oi != ol.end(); ++oi) {
-      int i = *oi;
+    for (cmGraphEdge const& oi : ol) {
+      int i = oi;
       fprintf(stderr, "  followed by Component (%d)\n", i);
     }
     fprintf(stderr, "  topo order index %d\n", this->ComponentOrder[c]);
@@ -771,10 +760,10 @@ void cmComputeLinkDepends::VisitEntry(int index)
   // are now pending.
   if (completed) {
     EdgeList const& ol = this->CCG->GetComponentGraphEdges(component);
-    for (EdgeList::const_iterator oi = ol.begin(); oi != ol.end(); ++oi) {
+    for (cmGraphEdge const& oi : ol) {
       // This entire component is now pending no matter whether it has
       // been partially seen already.
-      this->MakePendingComponent(*oi);
+      this->MakePendingComponent(oi);
     }
   }
 }
@@ -816,8 +805,8 @@ cmComputeLinkDepends::MakePendingComponent(unsigned int component)
 int cmComputeLinkDepends::ComputeComponentCount(NodeList const& nl)
 {
   unsigned int count = 2;
-  for (NodeList::const_iterator ni = nl.begin(); ni != nl.end(); ++ni) {
-    if (cmGeneratorTarget const* target = this->EntryList[*ni].Target) {
+  for (int ni : nl) {
+    if (cmGeneratorTarget const* target = this->EntryList[ni].Target) {
       if (cmLinkInterface const* iface =
             target->GetLinkInterface(this->Config, this->Target)) {
         if (iface->Multiplicity > count) {
@@ -832,13 +821,11 @@ int cmComputeLinkDepends::ComputeComponentCount(NodeList const& nl)
 void cmComputeLinkDepends::DisplayFinalEntries()
 {
   fprintf(stderr, "target [%s] links to:\n", this->Target->GetName().c_str());
-  for (std::vector<LinkEntry>::const_iterator lei =
-         this->FinalLinkEntries.begin();
-       lei != this->FinalLinkEntries.end(); ++lei) {
-    if (lei->Target) {
-      fprintf(stderr, "  target [%s]\n", lei->Target->GetName().c_str());
+  for (LinkEntry const& lei : this->FinalLinkEntries) {
+    if (lei.Target) {
+      fprintf(stderr, "  target [%s]\n", lei.Target->GetName().c_str());
     } else {
-      fprintf(stderr, "  item [%s]\n", lei->Item.c_str());
+      fprintf(stderr, "  item [%s]\n", lei.Item.c_str());
     }
   }
   fprintf(stderr, "\n");
diff --git a/Source/cmComputeLinkDepends.h b/Source/cmComputeLinkDepends.h
index 84ee9161f..dd0e02943 100644
--- a/Source/cmComputeLinkDepends.h
+++ b/Source/cmComputeLinkDepends.h
@@ -40,7 +40,7 @@ public:
     bool IsFlag;
     LinkEntry()
       : Item()
-      , Target(CM_NULLPTR)
+      , Target(nullptr)
       , IsSharedDep(false)
       , IsFlag(false)
     {
diff --git a/Source/cmComputeLinkInformation.cxx b/Source/cmComputeLinkInformation.cxx
index b2deaaa85..fb13a585b 100644
--- a/Source/cmComputeLinkInformation.cxx
+++ b/Source/cmComputeLinkInformation.cxx
@@ -260,7 +260,7 @@ cmComputeLinkInformation::cmComputeLinkInformation(
     this->GlobalGenerator, target, "linker search path");
   this->OrderRuntimeSearchPath = new cmOrderDirectories(
     this->GlobalGenerator, target, "runtime search path");
-  this->OrderDependentRPath = CM_NULLPTR;
+  this->OrderDependentRPath = nullptr;
 
   // Get the language used for linking this target.
   this->LinkLanguage = this->Target->GetLinkerLanguage(config);
@@ -281,7 +281,7 @@ cmComputeLinkInformation::cmComputeLinkInformation(
   // On platforms without import libraries there may be a special flag
   // to use when creating a plugin (module) that obtains symbols from
   // the program that will load it.
-  this->LoaderFlag = CM_NULLPTR;
+  this->LoaderFlag = nullptr;
   if (!this->UseImportLibrary &&
       this->Target->GetType() == cmStateEnums::MODULE_LIBRARY) {
     std::string loader_flag_var = "CMAKE_SHARED_MODULE_LOADER_";
@@ -468,13 +468,11 @@ bool cmComputeLinkInformation::Compute()
   cmComputeLinkDepends::EntryVector const& linkEntries = cld.Compute();
 
   // Add the link line items.
-  for (cmComputeLinkDepends::EntryVector::const_iterator lei =
-         linkEntries.begin();
-       lei != linkEntries.end(); ++lei) {
-    if (lei->IsSharedDep) {
-      this->AddSharedDepItem(lei->Item, lei->Target);
+  for (cmComputeLinkDepends::LinkEntry const& linkEntry : linkEntries) {
+    if (linkEntry.IsSharedDep) {
+      this->AddSharedDepItem(linkEntry.Item, linkEntry.Target);
     } else {
-      this->AddItem(lei->Item, lei->Target);
+      this->AddItem(linkEntry.Item, linkEntry.Target);
     }
   }
 
@@ -494,10 +492,7 @@ bool cmComputeLinkInformation::Compute()
     // directories.
     std::set<cmGeneratorTarget const*> const& wrongItems =
       cld.GetOldWrongConfigItems();
-    for (std::set<cmGeneratorTarget const*>::const_iterator i =
-           wrongItems.begin();
-         i != wrongItems.end(); ++i) {
-      cmGeneratorTarget const* tgt = *i;
+    for (cmGeneratorTarget const* tgt : wrongItems) {
       bool implib = (this->UseImportLibrary &&
                      (tgt->GetType() == cmStateEnums::SHARED_LIBRARY));
       cmStateEnums::ArtifactType artifact = implib
@@ -540,11 +535,10 @@ void cmComputeLinkInformation::AddImplicitLinkInfo()
   // The link closure lists all languages whose implicit info is needed.
   cmGeneratorTarget::LinkClosure const* lc =
     this->Target->GetLinkClosure(this->Config);
-  for (std::vector<std::string>::const_iterator li = lc->Languages.begin();
-       li != lc->Languages.end(); ++li) {
+  for (std::string const& li : lc->Languages) {
     // Skip those of the linker language.  They are implicit.
-    if (*li != this->LinkLanguage) {
-      this->AddImplicitLinkInfo(*li);
+    if (li != this->LinkLanguage) {
+      this->AddImplicitLinkInfo(li);
     }
   }
 }
@@ -559,10 +553,9 @@ void cmComputeLinkInformation::AddImplicitLinkInfo(std::string const& lang)
   if (const char* libs = this->Makefile->GetDefinition(libVar)) {
     std::vector<std::string> libsVec;
     cmSystemTools::ExpandListArgument(libs, libsVec);
-    for (std::vector<std::string>::const_iterator i = libsVec.begin();
-         i != libsVec.end(); ++i) {
-      if (this->ImplicitLinkLibs.find(*i) == this->ImplicitLinkLibs.end()) {
-        this->AddItem(*i, CM_NULLPTR);
+    for (std::string const& i : libsVec) {
+      if (this->ImplicitLinkLibs.find(i) == this->ImplicitLinkLibs.end()) {
+        this->AddItem(i, nullptr);
       }
     }
   }
@@ -616,7 +609,7 @@ void cmComputeLinkInformation::AddItem(std::string const& item,
       // Also add the item the interface specifies to be used in its place.
       std::string const& libName = tgt->GetImportedLibName(config);
       if (!libName.empty()) {
-        this->AddItem(libName, CM_NULLPTR);
+        this->AddItem(libName, nullptr);
       }
     } else {
       // Decide whether to use an import library.
@@ -710,7 +703,7 @@ void cmComputeLinkInformation::AddSharedDepItem(std::string const& item,
 
   // Check if we need to include the dependent shared library in other
   // path ordering.
-  cmOrderDirectories* order = CM_NULLPTR;
+  cmOrderDirectories* order = nullptr;
   if (this->SharedDependencyMode == SharedDepModeLibDir &&
       !this->LinkWithRuntimePath /* AddLibraryRuntimeInfo adds it */) {
     // Add the item to the linker search path.
@@ -722,7 +715,7 @@ void cmComputeLinkInformation::AddSharedDepItem(std::string const& item,
   if (order) {
     if (tgt) {
       std::string soName = tgt->GetSOName(this->Config);
-      const char* soname = soName.empty() ? CM_NULLPTR : soName.c_str();
+      const char* soname = soName.empty() ? nullptr : soName.c_str();
       order->AddRuntimeLibrary(lib, soname);
     } else {
       order->AddRuntimeLibrary(lib);
@@ -741,9 +734,9 @@ void cmComputeLinkInformation::ComputeLinkTypeInfo()
   this->LinkTypeEnabled = false;
 
   // Lookup link type selection flags.
-  const char* static_link_type_flag = CM_NULLPTR;
-  const char* shared_link_type_flag = CM_NULLPTR;
-  const char* target_type_str = CM_NULLPTR;
+  const char* static_link_type_flag = nullptr;
+  const char* shared_link_type_flag = nullptr;
+  const char* target_type_str = nullptr;
   switch (this->Target->GetType()) {
     case cmStateEnums::EXECUTABLE:
       target_type_str = "EXE";
@@ -811,18 +804,16 @@ void cmComputeLinkInformation::ComputeItemParserInfo()
         mf->GetDefinition("CMAKE_EXTRA_LINK_EXTENSIONS")) {
     std::vector<std::string> linkSuffixVec;
     cmSystemTools::ExpandListArgument(linkSuffixes, linkSuffixVec);
-    for (std::vector<std::string>::iterator i = linkSuffixVec.begin();
-         i != linkSuffixVec.end(); ++i) {
-      this->AddLinkExtension(i->c_str(), LinkUnknown);
+    for (std::string const& i : linkSuffixVec) {
+      this->AddLinkExtension(i.c_str(), LinkUnknown);
     }
   }
   if (const char* sharedSuffixes =
         mf->GetDefinition("CMAKE_EXTRA_SHARED_LIBRARY_SUFFIXES")) {
     std::vector<std::string> sharedSuffixVec;
     cmSystemTools::ExpandListArgument(sharedSuffixes, sharedSuffixVec);
-    for (std::vector<std::string>::iterator i = sharedSuffixVec.begin();
-         i != sharedSuffixVec.end(); ++i) {
-      this->AddLinkExtension(i->c_str(), LinkShared);
+    for (std::string const& i : sharedSuffixVec) {
+      this->AddLinkExtension(i.c_str(), LinkShared);
     }
   }
 
@@ -840,9 +831,8 @@ void cmComputeLinkInformation::ComputeItemParserInfo()
   // be the library name.  Match index 3 will be the library
   // extension.
   reg = "^(";
-  for (std::set<std::string>::iterator p = this->LinkPrefixes.begin();
-       p != this->LinkPrefixes.end(); ++p) {
-    reg += *p;
+  for (std::string const& p : this->LinkPrefixes) {
+    reg += p;
     reg += "|";
   }
   reg += ")";
@@ -906,8 +896,7 @@ std::string cmComputeLinkInformation::CreateExtensionRegex(
   // Build a list of extension choices.
   std::string libext = "(";
   const char* sep = "";
-  for (std::vector<std::string>::const_iterator i = exts.begin();
-       i != exts.end(); ++i) {
+  for (std::string const& i : exts) {
     // Separate this choice from the previous one.
     libext += sep;
     sep = "|";
@@ -915,9 +904,9 @@ std::string cmComputeLinkInformation::CreateExtensionRegex(
     // Store this extension choice with the "." escaped.
     libext += "\\";
 #if defined(_WIN32) && !defined(__CYGWIN__)
-    libext += this->NoCaseExpression(i->c_str());
+    libext += this->NoCaseExpression(i.c_str());
 #else
-    libext += *i;
+    libext += i;
 #endif
   }
 
@@ -1457,10 +1446,8 @@ bool cmComputeLinkInformation::FinishLinkerSearchDirectories()
   }
 
   // Add the link directories for full path items.
-  for (std::vector<std::string>::const_iterator i =
-         this->OldLinkDirItems.begin();
-       i != this->OldLinkDirItems.end(); ++i) {
-    this->OrderLinkerSearchPath->AddLinkLibrary(*i);
+  for (std::string const& i : this->OldLinkDirItems) {
+    this->OrderLinkerSearchPath->AddLinkLibrary(i);
   }
   return true;
 }
@@ -1489,19 +1476,17 @@ void cmComputeLinkInformation::PrintLinkPolicyDiagnosis(std::ostream& os)
     std::string::size_type max_size = 76;
     std::string line;
     const char* sep = "  ";
-    for (std::vector<std::string>::const_iterator i =
-           this->OldUserFlagItems.begin();
-         i != this->OldUserFlagItems.end(); ++i) {
+    for (std::string const& i : this->OldUserFlagItems) {
       // If the addition of another item will exceed the limit then
       // output the current line and reset it.  Note that the separator
       // is either " " or ", " which is always 2 characters.
-      if (!line.empty() && (line.size() + i->size() + 2) > max_size) {
+      if (!line.empty() && (line.size() + i.size() + 2) > max_size) {
         os << line << "\n";
         sep = "  ";
-        line = "";
+        line.clear();
       }
       line += sep;
-      line += *i;
+      line += i;
       // Convert to the other separator.
       sep = ", ";
     }
@@ -1513,11 +1498,9 @@ void cmComputeLinkInformation::PrintLinkPolicyDiagnosis(std::ostream& os)
   // List the paths old behavior is adding.
   os << "and other libraries with known full path:\n";
   std::set<std::string> emitted;
-  for (std::vector<std::string>::const_iterator i =
-         this->OldLinkDirItems.begin();
-       i != this->OldLinkDirItems.end(); ++i) {
-    if (emitted.insert(cmSystemTools::GetFilenamePath(*i)).second) {
-      os << "  " << *i << "\n";
+  for (std::string const& i : this->OldLinkDirItems) {
+    if (emitted.insert(cmSystemTools::GetFilenamePath(i)).second) {
+      os << "  " << i << "\n";
     }
   }
 
@@ -1544,9 +1527,8 @@ void cmComputeLinkInformation::LoadImplicitLinkInfo()
   // and add them to the set
   if (const char* libraryArch =
         this->Makefile->GetDefinition("CMAKE_LIBRARY_ARCHITECTURE")) {
-    for (std::vector<std::string>::const_iterator i = implicitDirVec.begin();
-         i != implicitDirVec.end(); ++i) {
-      this->ImplicitLinkDirs.insert(*i + "/" + libraryArch);
+    for (std::string const& i : implicitDirVec) {
+      this->ImplicitLinkDirs.insert(i + "/" + libraryArch);
     }
   }
 
@@ -1573,11 +1555,9 @@ void cmComputeLinkInformation::LoadImplicitLinkInfo()
   }
 
   // Store implicit link libraries.
-  for (std::vector<std::string>::const_iterator i = implicitLibVec.begin();
-       i != implicitLibVec.end(); ++i) {
+  for (std::string const& item : implicitLibVec) {
     // Items starting in '-' but not '-l' are flags, not libraries,
     // and should not be filtered by this implicit list.
-    std::string const& item = *i;
     if (item[0] != '-' || item[1] == 'l') {
       this->ImplicitLinkLibs.insert(item);
     }
@@ -1623,7 +1603,7 @@ void cmComputeLinkInformation::AddLibraryRuntimeInfo(
   // Try to get the soname of the library.  Only files with this name
   // could possibly conflict.
   std::string soName = target->GetSOName(this->Config);
-  const char* soname = soName.empty() ? CM_NULLPTR : soName.c_str();
+  const char* soname = soName.empty() ? nullptr : soName.c_str();
 
   // Include this library in the runtime path ordering.
   this->OrderRuntimeSearchPath->AddRuntimeLibrary(fullPath, soname);
@@ -1694,10 +1674,9 @@ static void cmCLI_ExpandListUnique(const char* str,
 {
   std::vector<std::string> tmp;
   cmSystemTools::ExpandListArgument(str, tmp);
-  for (std::vector<std::string>::iterator i = tmp.begin(); i != tmp.end();
-       ++i) {
-    if (emitted.insert(*i).second) {
-      out.push_back(*i);
+  for (std::string const& i : tmp) {
+    if (emitted.insert(i).second) {
+      out.push_back(i);
     }
   }
 }
@@ -1750,12 +1729,11 @@ void cmComputeLinkInformation::GetRPath(std::vector<std::string>& runtimeDirs,
       this->Makefile->GetSafeDefinition("CMAKE_INSTALL_PREFIX");
     cmSystemTools::ConvertToUnixSlashes(rootPath);
     std::vector<std::string> const& rdirs = this->GetRuntimeSearchPath();
-    for (std::vector<std::string>::const_iterator ri = rdirs.begin();
-         ri != rdirs.end(); ++ri) {
+    for (std::string const& ri : rdirs) {
       // Put this directory in the rpath if using build-tree rpath
       // support or if using the link path as an rpath.
       if (use_build_rpath) {
-        std::string d = *ri;
+        std::string d = ri;
         if (!rootPath.empty() && d.find(rootPath) == 0) {
           d = d.substr(rootPath.size());
         } else if (stagePath && *stagePath && d.find(stagePath) == 0) {
@@ -1773,11 +1751,11 @@ void cmComputeLinkInformation::GetRPath(std::vector<std::string>& runtimeDirs,
         const char* topSourceDir = this->CMakeInstance->GetHomeDirectory();
         const char* topBinaryDir =
           this->CMakeInstance->GetHomeOutputDirectory();
-        if (!cmSystemTools::ComparePath(*ri, topSourceDir) &&
-            !cmSystemTools::ComparePath(*ri, topBinaryDir) &&
-            !cmSystemTools::IsSubDirectory(*ri, topSourceDir) &&
-            !cmSystemTools::IsSubDirectory(*ri, topBinaryDir)) {
-          std::string d = *ri;
+        if (!cmSystemTools::ComparePath(ri, topSourceDir) &&
+            !cmSystemTools::ComparePath(ri, topBinaryDir) &&
+            !cmSystemTools::IsSubDirectory(ri, topSourceDir) &&
+            !cmSystemTools::IsSubDirectory(ri, topBinaryDir)) {
+          std::string d = ri;
           if (!rootPath.empty() && d.find(rootPath) == 0) {
             d = d.substr(rootPath.size());
           } else if (stagePath && *stagePath && d.find(stagePath) == 0) {
@@ -1800,12 +1778,11 @@ void cmComputeLinkInformation::GetRPath(std::vector<std::string>& runtimeDirs,
   {
     cmGeneratorTarget::LinkClosure const* lc =
       this->Target->GetLinkClosure(this->Config);
-    for (std::vector<std::string>::const_iterator li = lc->Languages.begin();
-         li != lc->Languages.end(); ++li) {
+    for (std::string const& li : lc->Languages) {
       std::string useVar =
-        "CMAKE_" + *li + "_USE_IMPLICIT_LINK_DIRECTORIES_IN_RUNTIME_PATH";
+        "CMAKE_" + li + "_USE_IMPLICIT_LINK_DIRECTORIES_IN_RUNTIME_PATH";
       if (this->Makefile->IsOn(useVar)) {
-        std::string dirVar = "CMAKE_" + *li + "_IMPLICIT_LINK_DIRECTORIES";
+        std::string dirVar = "CMAKE_" + li + "_IMPLICIT_LINK_DIRECTORIES";
         if (const char* dirs = this->Makefile->GetDefinition(dirVar)) {
           cmCLI_ExpandListUnique(dirs, runtimeDirs, emitted);
         }
diff --git a/Source/cmComputeLinkInformation.h b/Source/cmComputeLinkInformation.h
index 00e3ad265..f8c62145e 100644
--- a/Source/cmComputeLinkInformation.h
+++ b/Source/cmComputeLinkInformation.h
@@ -33,11 +33,11 @@ public:
     Item()
       : Value()
       , IsPath(true)
-      , Target(CM_NULLPTR)
+      , Target(nullptr)
     {
     }
     Item(std::string const& v, bool p,
-         cmGeneratorTarget const* target = CM_NULLPTR)
+         cmGeneratorTarget const* target = nullptr)
       : Value(v)
       , IsPath(p)
       , Target(target)
diff --git a/Source/cmComputeTargetDepends.cxx b/Source/cmComputeTargetDepends.cxx
index ff19eac63..963c2df88 100644
--- a/Source/cmComputeTargetDepends.cxx
+++ b/Source/cmComputeTargetDepends.cxx
@@ -148,10 +148,10 @@ void cmComputeTargetDepends::GetTargetDirectDepends(cmGeneratorTarget const* t,
 
   // Get its final dependencies.
   EdgeList const& nl = this->FinalGraph[i];
-  for (EdgeList::const_iterator ni = nl.begin(); ni != nl.end(); ++ni) {
-    cmGeneratorTarget const* dep = this->Targets[*ni];
+  for (cmGraphEdge const& ni : nl) {
+    cmGeneratorTarget const* dep = this->Targets[ni];
     cmTargetDependSet::iterator di = deps.insert(dep).first;
-    di->SetType(ni->IsStrong());
+    di->SetType(ni.IsStrong());
   }
 }
 
@@ -160,15 +160,13 @@ void cmComputeTargetDepends::CollectTargets()
   // Collect all targets from all generators.
   std::vector<cmLocalGenerator*> const& lgens =
     this->GlobalGenerator->GetLocalGenerators();
-  for (unsigned int i = 0; i < lgens.size(); ++i) {
-    const std::vector<cmGeneratorTarget*> targets =
-      lgens[i]->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::const_iterator ti = targets.begin();
-         ti != targets.end(); ++ti) {
-      cmGeneratorTarget* gt = *ti;
+  for (cmLocalGenerator* lgen : lgens) {
+    const std::vector<cmGeneratorTarget*>& targets =
+      lgen->GetGeneratorTargets();
+    for (cmGeneratorTarget const* ti : targets) {
       int index = static_cast<int>(this->Targets.size());
-      this->TargetIndex[gt] = index;
-      this->Targets.push_back(gt);
+      this->TargetIndex[ti] = index;
+      this->Targets.push_back(ti);
     }
   }
 }
@@ -204,14 +202,11 @@ void cmComputeTargetDepends::CollectTargetDepends(int depender_index)
     if (configs.empty()) {
       configs.push_back("");
     }
-    for (std::vector<std::string>::const_iterator it = configs.begin();
-         it != configs.end(); ++it) {
+    for (std::string const& it : configs) {
       std::vector<cmSourceFile const*> objectFiles;
-      depender->GetExternalObjects(objectFiles, *it);
-      for (std::vector<cmSourceFile const*>::const_iterator oi =
-             objectFiles.begin();
-           oi != objectFiles.end(); ++oi) {
-        std::string objLib = (*oi)->GetObjectLibrary();
+      depender->GetExternalObjects(objectFiles, it);
+      for (cmSourceFile const* o : objectFiles) {
+        std::string objLib = o->GetObjectLibrary();
         if (!objLib.empty() && emitted.insert(objLib).second) {
           if (depender->GetType() != cmStateEnums::EXECUTABLE &&
               depender->GetType() != cmStateEnums::STATIC_LIBRARY &&
@@ -228,17 +223,15 @@ void cmComputeTargetDepends::CollectTargetDepends(int depender_index)
         }
       }
 
-      cmLinkImplementation const* impl = depender->GetLinkImplementation(*it);
+      cmLinkImplementation const* impl = depender->GetLinkImplementation(it);
 
       // A target should not depend on itself.
       emitted.insert(depender->GetName());
-      for (std::vector<cmLinkImplItem>::const_iterator lib =
-             impl->Libraries.begin();
-           lib != impl->Libraries.end(); ++lib) {
+      for (cmLinkImplItem const& lib : impl->Libraries) {
         // Don't emit the same library twice for this target.
-        if (emitted.insert(*lib).second) {
-          this->AddTargetDepend(depender_index, *lib, true);
-          this->AddInterfaceDepends(depender_index, *lib, *it, emitted);
+        if (emitted.insert(lib).second) {
+          this->AddTargetDepend(depender_index, lib, true);
+          this->AddInterfaceDepends(depender_index, lib, it, emitted);
         }
       }
     }
@@ -250,11 +243,10 @@ void cmComputeTargetDepends::CollectTargetDepends(int depender_index)
     std::set<std::string> emitted;
     // A target should not depend on itself.
     emitted.insert(depender->GetName());
-    for (std::set<cmLinkItem>::const_iterator util = tutils.begin();
-         util != tutils.end(); ++util) {
+    for (cmLinkItem const& litem : tutils) {
       // Don't emit the same utility twice for this target.
-      if (emitted.insert(*util).second) {
-        this->AddTargetDepend(depender_index, *util, false);
+      if (emitted.insert(litem).second) {
+        this->AddTargetDepend(depender_index, litem, false);
       }
     }
   }
@@ -267,13 +259,11 @@ void cmComputeTargetDepends::AddInterfaceDepends(
   cmGeneratorTarget const* depender = this->Targets[depender_index];
   if (cmLinkInterface const* iface =
         dependee->GetLinkInterface(config, depender)) {
-    for (std::vector<cmLinkItem>::const_iterator lib =
-           iface->Libraries.begin();
-         lib != iface->Libraries.end(); ++lib) {
+    for (cmLinkItem const& lib : iface->Libraries) {
       // Don't emit the same library twice for this target.
-      if (emitted.insert(*lib).second) {
-        this->AddTargetDepend(depender_index, *lib, true);
-        this->AddInterfaceDepends(depender_index, *lib, config, emitted);
+      if (emitted.insert(lib).second) {
+        this->AddTargetDepend(depender_index, lib, true);
+        this->AddInterfaceDepends(depender_index, lib, config, emitted);
       }
     }
   }
@@ -290,7 +280,7 @@ void cmComputeTargetDepends::AddInterfaceDepends(
   // within the project.
   if (dependee && dependee->GetType() == cmStateEnums::EXECUTABLE &&
       !dependee->IsExecutableWithExports()) {
-    dependee = CM_NULLPTR;
+    dependee = nullptr;
   }
 
   if (dependee) {
@@ -348,7 +338,7 @@ void cmComputeTargetDepends::AddTargetDepend(int depender_index,
   // within the project.
   if (linking && dependee && dependee->GetType() == cmStateEnums::EXECUTABLE &&
       !dependee->IsExecutableWithExports()) {
-    dependee = CM_NULLPTR;
+    dependee = nullptr;
   }
 
   if (dependee) {
@@ -365,9 +355,8 @@ void cmComputeTargetDepends::AddTargetDepend(int depender_index,
     // Skip IMPORTED and INTERFACE targets but follow their utility
     // dependencies.
     std::set<cmLinkItem> const& utils = dependee->GetUtilityItems();
-    for (std::set<cmLinkItem>::const_iterator i = utils.begin();
-         i != utils.end(); ++i) {
-      if (cmGeneratorTarget const* transitive_dependee = i->Target) {
+    for (cmLinkItem const& i : utils) {
+      if (cmGeneratorTarget const* transitive_dependee = i.Target) {
         this->AddTargetDepend(depender_index, transitive_dependee, false);
       }
     }
@@ -395,11 +384,11 @@ void cmComputeTargetDepends::DisplayGraph(Graph const& graph,
     cmGeneratorTarget const* depender = this->Targets[depender_index];
     fprintf(stderr, "target %d is [%s]\n", depender_index,
             depender->GetName().c_str());
-    for (EdgeList::const_iterator ni = nl.begin(); ni != nl.end(); ++ni) {
-      int dependee_index = *ni;
+    for (cmGraphEdge const& ni : nl) {
+      int dependee_index = ni;
       cmGeneratorTarget const* dependee = this->Targets[dependee_index];
       fprintf(stderr, "  depends on target %d [%s] (%s)\n", dependee_index,
-              dependee->GetName().c_str(), ni->IsStrong() ? "strong" : "weak");
+              dependee->GetName().c_str(), ni.IsStrong() ? "strong" : "weak");
     }
   }
   fprintf(stderr, "\n");
@@ -414,8 +403,7 @@ void cmComputeTargetDepends::DisplayComponents(
   for (int c = 0; c < n; ++c) {
     NodeList const& nl = components[c];
     fprintf(stderr, "Component (%d):\n", c);
-    for (NodeList::const_iterator ni = nl.begin(); ni != nl.end(); ++ni) {
-      int i = *ni;
+    for (int i : nl) {
       fprintf(stderr, "  contains target %d [%s]\n", i,
               this->Targets[i]->GetName().c_str());
     }
@@ -446,8 +434,8 @@ bool cmComputeTargetDepends::CheckComponents(
     }
 
     // Make sure the component is all STATIC_LIBRARY targets.
-    for (NodeList::const_iterator ni = nl.begin(); ni != nl.end(); ++ni) {
-      if (this->Targets[*ni]->GetType() != cmStateEnums::STATIC_LIBRARY) {
+    for (int ni : nl) {
+      if (this->Targets[ni]->GetType() != cmStateEnums::STATIC_LIBRARY) {
         this->ComplainAboutBadComponent(ccg, c);
         return false;
       }
@@ -466,9 +454,8 @@ void cmComputeTargetDepends::ComplainAboutBadComponent(
   std::vector<NodeList> const& components = ccg.GetComponents();
   std::vector<int> const& cmap = ccg.GetComponentMap();
   NodeList const& cl = components[c];
-  for (NodeList::const_iterator ci = cl.begin(); ci != cl.end(); ++ci) {
+  for (int i : cl) {
     // Get the depender.
-    int i = *ci;
     cmGeneratorTarget const* depender = this->Targets[i];
 
     // Describe the depender.
@@ -477,12 +464,12 @@ void cmComputeTargetDepends::ComplainAboutBadComponent(
 
     // List its dependencies that are inside the component.
     EdgeList const& nl = this->InitialGraph[i];
-    for (EdgeList::const_iterator ni = nl.begin(); ni != nl.end(); ++ni) {
-      int j = *ni;
+    for (cmGraphEdge const& ni : nl) {
+      int j = ni;
       if (cmap[j] == c) {
         cmGeneratorTarget const* dependee = this->Targets[j];
         e << "    depends on \"" << dependee->GetName() << "\""
-          << " (" << (ni->IsStrong() ? "strong" : "weak") << ")\n";
+          << " (" << (ni.IsStrong() ? "strong" : "weak") << ")\n";
       }
     }
   }
@@ -514,9 +501,9 @@ bool cmComputeTargetDepends::IntraComponent(std::vector<int> const& cmap,
   if (emitted.insert(i).second) {
     // Honor strong intra-component edges in the final order.
     EdgeList const& el = this->InitialGraph[i];
-    for (EdgeList::const_iterator ei = el.begin(); ei != el.end(); ++ei) {
-      int j = *ei;
-      if (cmap[j] == c && ei->IsStrong()) {
+    for (cmGraphEdge const& edge : el) {
+      int j = edge;
+      if (cmap[j] == c && edge.IsStrong()) {
         this->FinalGraph[i].push_back(cmGraphEdge(j, true));
         if (!this->IntraComponent(cmap, c, j, head, emitted, visited)) {
           return false;
@@ -573,11 +560,11 @@ bool cmComputeTargetDepends::ComputeFinalDepends(
        ++depender_component) {
     int depender_component_tail = this->ComponentTail[depender_component];
     EdgeList const& nl = cgraph[depender_component];
-    for (EdgeList::const_iterator ni = nl.begin(); ni != nl.end(); ++ni) {
-      int dependee_component = *ni;
+    for (cmGraphEdge const& ni : nl) {
+      int dependee_component = ni;
       int dependee_component_head = this->ComponentHead[dependee_component];
       this->FinalGraph[depender_component_tail].push_back(
-        cmGraphEdge(dependee_component_head, ni->IsStrong()));
+        cmGraphEdge(dependee_component_head, ni.IsStrong()));
     }
   }
   return true;
diff --git a/Source/cmConditionEvaluator.cxx b/Source/cmConditionEvaluator.cxx
index 2bacf7321..90b3f6d9a 100644
--- a/Source/cmConditionEvaluator.cxx
+++ b/Source/cmConditionEvaluator.cxx
@@ -2,7 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmConditionEvaluator.h"
 
-#include "cmConfigure.h"
 #include "cmsys/RegularExpression.hxx"
 #include <algorithm>
 #include <sstream>
@@ -84,7 +83,7 @@ bool cmConditionEvaluator::IsTrue(
   const std::vector<cmExpandedCommandArgument>& args, std::string& errorString,
   cmake::MessageType& status)
 {
-  errorString = "";
+  errorString.clear();
 
   // handle empty invocation
   if (args.empty()) {
@@ -139,7 +138,7 @@ const char* cmConditionEvaluator::GetDefinitionIfUnquoted(
   if ((this->Policy54Status != cmPolicies::WARN &&
        this->Policy54Status != cmPolicies::OLD) &&
       argument.WasQuoted()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   const char* def = this->Makefile.GetDefinition(argument.GetValue());
@@ -455,7 +454,7 @@ bool cmConditionEvaluator::HandleLevel1(cmArgumentList& newArgs, std::string&,
       if (this->IsKeyword(keyCOMMAND, *arg) && argP1 != newArgs.end()) {
         cmCommand* command =
           this->Makefile.GetState()->GetCommand(argP1->c_str());
-        this->HandlePredicate(command != CM_NULLPTR, reducible, arg, newArgs,
+        this->HandlePredicate(command != nullptr, reducible, arg, newArgs,
                               argP1, argP2);
       }
       // does a policy exist
@@ -467,7 +466,7 @@ bool cmConditionEvaluator::HandleLevel1(cmArgumentList& newArgs, std::string&,
       // does a target exist
       if (this->IsKeyword(keyTARGET, *arg) && argP1 != newArgs.end()) {
         this->HandlePredicate(
-          this->Makefile.FindTargetToUse(argP1->GetValue()) != CM_NULLPTR,
+          this->Makefile.FindTargetToUse(argP1->GetValue()) != nullptr,
           reducible, arg, newArgs, argP1, argP2);
       }
       // does a test exist
@@ -475,8 +474,8 @@ bool cmConditionEvaluator::HandleLevel1(cmArgumentList& newArgs, std::string&,
           this->Policy64Status != cmPolicies::WARN) {
         if (this->IsKeyword(keyTEST, *arg) && argP1 != newArgs.end()) {
           const cmTest* haveTest = this->Makefile.GetTest(argP1->c_str());
-          this->HandlePredicate(haveTest != CM_NULLPTR, reducible, arg,
-                                newArgs, argP1, argP2);
+          this->HandlePredicate(haveTest != nullptr, reducible, arg, newArgs,
+                                argP1, argP2);
         }
       } else if (this->Policy64Status == cmPolicies::WARN &&
                  this->IsKeyword(keyTEST, *arg)) {
diff --git a/Source/cmConfigure.cmake.h.in b/Source/cmConfigure.cmake.h.in
index 524fdf808..9a78aca36 100644
--- a/Source/cmConfigure.cmake.h.in
+++ b/Source/cmConfigure.cmake.h.in
@@ -19,51 +19,25 @@
 #cmakedefine HAVE_UNSETENV
 #cmakedefine CMAKE_USE_ELF_PARSER
 #cmakedefine CMAKE_USE_MACH_PARSER
-#cmakedefine CMAKE_USE_LIBUV
-#cmakedefine CMake_HAVE_CXX_AUTO_PTR
-#cmakedefine CMake_HAVE_CXX_EQ_DELETE
 #cmakedefine CMake_HAVE_CXX_FALLTHROUGH
 #cmakedefine CMake_HAVE_CXX_GNU_FALLTHROUGH
 #cmakedefine CMake_HAVE_CXX_ATTRIBUTE_FALLTHROUGH
 #cmakedefine CMake_HAVE_CXX_MAKE_UNIQUE
-#cmakedefine CMake_HAVE_CXX_NULLPTR
-#cmakedefine CMake_HAVE_CXX_OVERRIDE
-#cmakedefine CMake_HAVE_CXX_UNIQUE_PTR
-#cmakedefine CMake_HAVE_CXX_UNORDERED_MAP
-#cmakedefine CMake_HAVE_CXX_UNORDERED_SET
 #define CMAKE_BIN_DIR "/@CMAKE_BIN_DIR@"
 #define CMAKE_DATA_DIR "/@CMAKE_DATA_DIR@"
 
-#ifdef CMake_HAVE_CXX_EQ_DELETE
-#define CM_EQ_DELETE = delete
-#else
-#define CM_EQ_DELETE
-#endif
-
 #if defined(CMake_HAVE_CXX_FALLTHROUGH)
 #define CM_FALLTHROUGH [[fallthrough]]
 #elif defined(CMake_HAVE_CXX_GNU_FALLTHROUGH)
 #define CM_FALLTHROUGH [[gnu::fallthrough]]
-elif defined(CMake_HAVE_CXX_ATTRIBUTE_FALLTHROUGH)
+#elif defined(CMake_HAVE_CXX_ATTRIBUTE_FALLTHROUGH)
 #define CM_FALLTHROUGH __attribute__((fallthrough))
 #else
 #define CM_FALLTHROUGH
 #endif
 
-#ifdef CMake_HAVE_CXX_NULLPTR
-#define CM_NULLPTR nullptr
-#else
-#define CM_NULLPTR 0
-#endif
-
-#ifdef CMake_HAVE_CXX_OVERRIDE
-#define CM_OVERRIDE override
-#else
-#define CM_OVERRIDE
-#endif
-
 #define CM_DISABLE_COPY(Class)                                                \
-  Class(Class const&) CM_EQ_DELETE;                                           \
-  Class& operator=(Class const&) CM_EQ_DELETE;
+  Class(Class const&) = delete;                                               \
+  Class& operator=(Class const&) = delete;
 
 #endif
diff --git a/Source/cmConfigureFileCommand.h b/Source/cmConfigureFileCommand.h
index 6cebbd258..cff934b48 100644
--- a/Source/cmConfigureFileCommand.h
+++ b/Source/cmConfigureFileCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmConfigureFileCommand_h
 #define cmConfigureFileCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -16,14 +16,14 @@ class cmExecutionStatus;
 class cmConfigureFileCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmConfigureFileCommand; }
+  cmCommand* Clone() override { return new cmConfigureFileCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the input file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   int ConfigureFile();
diff --git a/Source/cmConnection.cxx b/Source/cmConnection.cxx
new file mode 100644
index 000000000..28ba12c4b
--- /dev/null
+++ b/Source/cmConnection.cxx
@@ -0,0 +1,168 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#include "cmConnection.h"
+
+#include "cmServer.h"
+#include "cm_uv.h"
+
+#include <cassert>
+#include <cstring>
+
+struct write_req_t
+{
+  uv_write_t req;
+  uv_buf_t buf;
+};
+
+void cmEventBasedConnection::on_alloc_buffer(uv_handle_t* handle,
+                                             size_t suggested_size,
+                                             uv_buf_t* buf)
+{
+  (void)(handle);
+  char* rawBuffer = new char[suggested_size];
+  *buf = uv_buf_init(rawBuffer, static_cast<unsigned int>(suggested_size));
+}
+
+void cmEventBasedConnection::on_read(uv_stream_t* stream, ssize_t nread,
+                                     const uv_buf_t* buf)
+{
+  auto conn = reinterpret_cast<cmEventBasedConnection*>(stream->data);
+  if (conn) {
+    if (nread >= 0) {
+      conn->ReadData(std::string(buf->base, buf->base + nread));
+    } else {
+      conn->OnDisconnect(static_cast<int>(nread));
+    }
+  }
+
+  delete[](buf->base);
+}
+
+void cmEventBasedConnection::on_close(uv_handle_t* /*handle*/)
+{
+}
+
+void cmEventBasedConnection::on_write(uv_write_t* req, int status)
+{
+  (void)(status);
+
+  // Free req and buffer
+  write_req_t* wr = reinterpret_cast<write_req_t*>(req);
+  delete[](wr->buf.base);
+  delete wr;
+}
+
+void cmEventBasedConnection::on_new_connection(uv_stream_t* stream, int status)
+{
+  (void)(status);
+  auto conn = reinterpret_cast<cmEventBasedConnection*>(stream->data);
+
+  if (conn) {
+    conn->Connect(stream);
+  }
+}
+
+bool cmEventBasedConnection::IsOpen() const
+{
+  return this->WriteStream != nullptr;
+}
+
+void cmEventBasedConnection::WriteData(const std::string& _data)
+{
+#ifndef NDEBUG
+  auto curr_thread_id = uv_thread_self();
+  assert(this->Server);
+  assert(uv_thread_equal(&curr_thread_id, &this->Server->ServeThreadId));
+#endif
+
+  auto data = _data;
+  assert(this->WriteStream);
+  if (BufferStrategy) {
+    data = BufferStrategy->BufferOutMessage(data);
+  }
+
+  auto ds = data.size();
+
+  write_req_t* req = new write_req_t;
+  req->req.data = this;
+  req->buf = uv_buf_init(new char[ds], static_cast<unsigned int>(ds));
+  memcpy(req->buf.base, data.c_str(), ds);
+  uv_write(reinterpret_cast<uv_write_t*>(req),
+           static_cast<uv_stream_t*>(this->WriteStream), &req->buf, 1,
+           on_write);
+}
+
+void cmEventBasedConnection::ReadData(const std::string& data)
+{
+  this->RawReadBuffer += data;
+  if (BufferStrategy) {
+    std::string packet = BufferStrategy->BufferMessage(this->RawReadBuffer);
+    while (!packet.empty()) {
+      ProcessRequest(packet);
+      packet = BufferStrategy->BufferMessage(this->RawReadBuffer);
+    }
+  } else {
+    ProcessRequest(this->RawReadBuffer);
+    this->RawReadBuffer.clear();
+  }
+}
+
+cmEventBasedConnection::cmEventBasedConnection(
+  cmConnectionBufferStrategy* bufferStrategy)
+  : BufferStrategy(bufferStrategy)
+{
+}
+
+void cmEventBasedConnection::Connect(uv_stream_t* server)
+{
+  (void)server;
+  Server->OnConnected(nullptr);
+}
+
+void cmEventBasedConnection::OnDisconnect(int onerror)
+{
+  (void)onerror;
+  this->OnConnectionShuttingDown();
+  if (this->Server) {
+    this->Server->OnDisconnect(this);
+  }
+}
+
+cmConnection::~cmConnection()
+{
+}
+
+bool cmConnection::OnConnectionShuttingDown()
+{
+  this->Server = nullptr;
+  return true;
+}
+
+void cmConnection::SetServer(cmServerBase* s)
+{
+  Server = s;
+}
+
+void cmConnection::ProcessRequest(const std::string& request)
+{
+  Server->ProcessRequest(this, request);
+}
+
+bool cmConnection::OnServeStart(std::string* errString)
+{
+  (void)errString;
+  return true;
+}
+
+bool cmEventBasedConnection::OnConnectionShuttingDown()
+{
+  if (this->WriteStream) {
+    this->WriteStream->data = nullptr;
+  }
+  if (this->ReadStream) {
+    this->ReadStream->data = nullptr;
+  }
+  this->ReadStream = nullptr;
+  this->WriteStream = nullptr;
+  return true;
+}
diff --git a/Source/cmConnection.h b/Source/cmConnection.h
new file mode 100644
index 000000000..ddb774457
--- /dev/null
+++ b/Source/cmConnection.h
@@ -0,0 +1,134 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+
+#pragma once
+
+#include "cmConfigure.h" // IWYU pragma: keep
+
+#include "cm_uv.h"
+
+#include <cstddef>
+#include <memory>
+#include <string>
+
+class cmServerBase;
+
+/***
+ * Given a sequence of bytes with any kind of buffering, instances of this
+ * class arrange logical chunks according to whatever the use case is for
+ * the connection.
+ */
+class cmConnectionBufferStrategy
+{
+public:
+  virtual ~cmConnectionBufferStrategy();
+
+  /***
+   * Called whenever with an active raw buffer. If a logical chunk
+   * becomes available, that chunk is returned and that portion is
+   * removed from the rawBuffer
+   *
+   * @param rawBuffer in/out parameter. Receive buffer; the buffer strategy is
+   * free to manipulate this buffer anyway it needs to.
+   *
+   * @return Next chunk from the stream. Returns the empty string if a chunk
+   * isn't ready yet. Users of this interface should repeatedly call this
+   * function until an empty string is returned since its entirely possible
+   * multiple chunks come in a single raw buffer.
+   */
+  virtual std::string BufferMessage(std::string& rawBuffer) = 0;
+
+  /***
+   * Called to properly buffer an outgoing message.
+   *
+   * @param rawBuffer Message to format in the correct way
+   *
+   * @return Formatted message
+   */
+  virtual std::string BufferOutMessage(const std::string& rawBuffer) const
+  {
+    return rawBuffer;
+  };
+  /***
+   * Resets the internal state of the buffering
+   */
+  virtual void clear();
+
+  // TODO: There should be a callback / flag set for errors
+};
+
+class cmConnection
+{
+  CM_DISABLE_COPY(cmConnection)
+
+public:
+  cmConnection() {}
+
+  virtual void WriteData(const std::string& data) = 0;
+
+  virtual ~cmConnection();
+
+  virtual bool OnConnectionShuttingDown();
+
+  virtual bool IsOpen() const = 0;
+
+  virtual void SetServer(cmServerBase* s);
+
+  virtual void ProcessRequest(const std::string& request);
+
+  virtual bool OnServeStart(std::string* pString);
+
+protected:
+  cmServerBase* Server = nullptr;
+};
+
+/***
+ * Abstraction of a connection; ties in event callbacks from libuv and notifies
+ * the server when appropriate
+ */
+class cmEventBasedConnection : public cmConnection
+{
+
+public:
+  /***
+   * @param bufferStrategy If no strategy is given, it will process the raw
+   * chunks as they come in. The connection
+   * owns the pointer given.
+   */
+  cmEventBasedConnection(cmConnectionBufferStrategy* bufferStrategy = nullptr);
+
+  virtual void Connect(uv_stream_t* server);
+
+  virtual void ReadData(const std::string& data);
+
+  bool IsOpen() const override;
+
+  void WriteData(const std::string& data) override;
+  bool OnConnectionShuttingDown() override;
+
+  virtual void OnDisconnect(int errorCode);
+  uv_stream_t* ReadStream = nullptr;
+  uv_stream_t* WriteStream = nullptr;
+
+  static void on_close(uv_handle_t* handle);
+
+  template <typename T>
+  static void on_close_delete(uv_handle_t* handle)
+  {
+    delete reinterpret_cast<T*>(handle);
+  }
+
+protected:
+  std::string RawReadBuffer;
+
+  std::unique_ptr<cmConnectionBufferStrategy> BufferStrategy;
+
+  static void on_read(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf);
+
+  static void on_write(uv_write_t* req, int status);
+
+  static void on_new_connection(uv_stream_t* stream, int status);
+
+  static void on_alloc_buffer(uv_handle_t* handle, size_t suggested_size,
+                              uv_buf_t* buf);
+};
diff --git a/Source/cmContinueCommand.h b/Source/cmContinueCommand.h
index 92bc68e85..d383d1d03 100644
--- a/Source/cmContinueCommand.h
+++ b/Source/cmContinueCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmContinueCommand_h
 #define cmContinueCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmContinueCommand; }
+  cmCommand* Clone() override { return new cmContinueCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmCoreTryCompile.cxx b/Source/cmCoreTryCompile.cxx
index 9a4abf3ca..fd258fe79 100644
--- a/Source/cmCoreTryCompile.cxx
+++ b/Source/cmCoreTryCompile.cxx
@@ -2,7 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCoreTryCompile.h"
 
-#include "cmConfigure.h"
 #include "cmsys/Directory.hxx"
 #include <set>
 #include <sstream>
@@ -72,7 +71,7 @@ int cmCoreTryCompile::TryCompileCode(std::vector<std::string> const& argv,
                                      bool isTryRun)
 {
   this->BinaryDirectory = argv[1];
-  this->OutputFile = "";
+  this->OutputFile.clear();
   // which signature were we called with ?
   this->SrcFileSignature = true;
 
@@ -102,7 +101,7 @@ int cmCoreTryCompile::TryCompileCode(std::vector<std::string> const& argv,
   }
 
   const char* sourceDirectory = argv[2].c_str();
-  const char* projectName = CM_NULLPTR;
+  const char* projectName = nullptr;
   std::string targetName;
   std::vector<std::string> cmakeFlags(1, "CMAKE_FLAGS"); // fake argv[0]
   std::vector<std::string> compileDefs;
@@ -418,16 +417,15 @@ int cmCoreTryCompile::TryCompileCode(std::vector<std::string> const& argv,
     // Detect languages to enable.
     cmGlobalGenerator* gg = this->Makefile->GetGlobalGenerator();
     std::set<std::string> testLangs;
-    for (std::vector<std::string>::iterator si = sources.begin();
-         si != sources.end(); ++si) {
-      std::string ext = cmSystemTools::GetFilenameLastExtension(*si);
+    for (std::string const& si : sources) {
+      std::string ext = cmSystemTools::GetFilenameLastExtension(si);
       std::string lang = gg->GetLanguageFromExtension(ext.c_str());
       if (!lang.empty()) {
         testLangs.insert(lang);
       } else {
         std::ostringstream err;
         err << "Unknown extension \"" << ext << "\" for file\n"
-            << "  " << *si << "\n"
+            << "  " << si << "\n"
             << "try_compile() works only for enabled languages.  "
             << "Currently these are:\n  ";
         std::vector<std::string> langs;
@@ -468,11 +466,10 @@ int cmCoreTryCompile::TryCompileCode(std::vector<std::string> const& argv,
     }
 
     std::string projectLangs;
-    for (std::set<std::string>::iterator li = testLangs.begin();
-         li != testLangs.end(); ++li) {
-      projectLangs += " " + *li;
+    for (std::string const& li : testLangs) {
+      projectLangs += " " + li;
       std::string rulesOverrideBase = "CMAKE_USER_MAKE_RULES_OVERRIDE";
-      std::string rulesOverrideLang = rulesOverrideBase + "_" + *li;
+      std::string rulesOverrideLang = rulesOverrideBase + "_" + li;
       if (const char* rulesOverridePath =
             this->Makefile->GetDefinition(rulesOverrideLang)) {
         fprintf(fout, "set(%s \"%s\")\n", rulesOverrideLang.c_str(),
@@ -485,15 +482,14 @@ int cmCoreTryCompile::TryCompileCode(std::vector<std::string> const& argv,
     }
     fprintf(fout, "project(CMAKE_TRY_COMPILE%s)\n", projectLangs.c_str());
     fprintf(fout, "set(CMAKE_VERBOSE_MAKEFILE 1)\n");
-    for (std::set<std::string>::iterator li = testLangs.begin();
-         li != testLangs.end(); ++li) {
-      std::string langFlags = "CMAKE_" + *li + "_FLAGS";
+    for (std::string const& li : testLangs) {
+      std::string langFlags = "CMAKE_" + li + "_FLAGS";
       const char* flags = this->Makefile->GetDefinition(langFlags);
-      fprintf(fout, "set(CMAKE_%s_FLAGS %s)\n", li->c_str(),
+      fprintf(fout, "set(CMAKE_%s_FLAGS %s)\n", li.c_str(),
               cmOutputConverter::EscapeForCMake(flags ? flags : "").c_str());
       fprintf(fout, "set(CMAKE_%s_FLAGS \"${CMAKE_%s_FLAGS}"
                     " ${COMPILE_DEFINITIONS}\")\n",
-              li->c_str(), li->c_str());
+              li.c_str(), li.c_str());
     }
     switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0066)) {
       case cmPolicies::WARN:
@@ -523,9 +519,8 @@ int cmCoreTryCompile::TryCompileCode(std::vector<std::string> const& argv,
         static std::string const cfgDefault = "DEBUG";
         std::string const cfg =
           !tcConfig.empty() ? cmSystemTools::UpperCase(tcConfig) : cfgDefault;
-        for (std::set<std::string>::iterator li = testLangs.begin();
-             li != testLangs.end(); ++li) {
-          std::string const langFlagsCfg = "CMAKE_" + *li + "_FLAGS_" + cfg;
+        for (std::string const& li : testLangs) {
+          std::string const langFlagsCfg = "CMAKE_" + li + "_FLAGS_" + cfg;
           const char* flagsCfg = this->Makefile->GetDefinition(langFlagsCfg);
           fprintf(fout, "set(%s %s)\n", langFlagsCfg.c_str(),
                   cmOutputConverter::EscapeForCMake(flagsCfg ? flagsCfg : "")
@@ -639,9 +634,7 @@ int cmCoreTryCompile::TryCompileCode(std::vector<std::string> const& argv,
         cmakeFlags.push_back(flag);
       }
 
-      for (std::set<std::string>::iterator vi = vars.begin(); vi != vars.end();
-           ++vi) {
-        std::string const& var = *vi;
+      for (std::string const& var : vars) {
         if (const char* val = this->Makefile->GetDefinition(var)) {
           std::string flag = "-D" + var + "=" + val;
           cmakeFlags.push_back(flag);
@@ -670,13 +663,12 @@ int cmCoreTryCompile::TryCompileCode(std::vector<std::string> const& argv,
       /* Create the actual static library.  */
       fprintf(fout, "add_library(%s STATIC", targetName.c_str());
     }
-    for (std::vector<std::string>::iterator si = sources.begin();
-         si != sources.end(); ++si) {
-      fprintf(fout, " \"%s\"", si->c_str());
+    for (std::string const& si : sources) {
+      fprintf(fout, " \"%s\"", si.c_str());
 
       // Add dependencies on any non-temporary sources.
-      if (si->find("CMakeTmp") == std::string::npos) {
-        this->Makefile->AddCMakeDependFile(*si);
+      if (si.find("CMakeTmp") == std::string::npos) {
+        this->Makefile->AddCMakeDependFile(si);
       }
     }
     fprintf(fout, ")\n");
@@ -763,9 +755,8 @@ int cmCoreTryCompile::TryCompileCode(std::vector<std::string> const& argv,
         "is not honoring language standard variables in the test project:\n"
         ;
       /* clang-format on */
-      for (std::vector<std::string>::iterator vi = this->WarnCMP0067.begin();
-           vi != this->WarnCMP0067.end(); ++vi) {
-        w << "  " << *vi << "\n";
+      for (std::string const& vi : this->WarnCMP0067) {
+        w << "  " << vi << "\n";
       }
       this->Makefile->IssueMessage(cmake::AUTHOR_WARNING, w.str());
     }
@@ -928,8 +919,8 @@ void cmCoreTryCompile::CleanupFiles(const char* binDir)
 void cmCoreTryCompile::FindOutputFile(const std::string& targetName,
                                       cmStateEnums::TargetType targetType)
 {
-  this->FindErrorMessage = "";
-  this->OutputFile = "";
+  this->FindErrorMessage.clear();
+  this->OutputFile.clear();
   std::string tmpOutputFile = "/";
   if (targetType == cmStateEnums::EXECUTABLE) {
     tmpOutputFile += targetName;
@@ -964,10 +955,9 @@ void cmCoreTryCompile::FindOutputFile(const std::string& targetName,
 #endif
   searchDirs.push_back("/Development");
 
-  for (std::vector<std::string>::const_iterator it = searchDirs.begin();
-       it != searchDirs.end(); ++it) {
+  for (std::string const& sdir : searchDirs) {
     std::string command = this->BinaryDirectory;
-    command += *it;
+    command += sdir;
     command += tmpOutputFile;
     if (cmSystemTools::FileExists(command.c_str())) {
       this->OutputFile = cmSystemTools::CollapseFullPath(command);
diff --git a/Source/cmCreateTestSourceList.h b/Source/cmCreateTestSourceList.h
index f1f1e4b8a..005b32c30 100644
--- a/Source/cmCreateTestSourceList.h
+++ b/Source/cmCreateTestSourceList.h
@@ -3,7 +3,7 @@
 #ifndef cmCreateTestSourceList_h
 #define cmCreateTestSourceList_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmCreateTestSourceList; }
+  cmCommand* Clone() override { return new cmCreateTestSourceList; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmCryptoHash.cxx b/Source/cmCryptoHash.cxx
index 7995b2cb3..d914eb142 100644
--- a/Source/cmCryptoHash.cxx
+++ b/Source/cmCryptoHash.cxx
@@ -2,11 +2,14 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCryptoHash.h"
 
+#include "cmAlgorithms.h"
 #include "cm_kwiml.h"
 #include "cm_rhash.h"
 #include "cmsys/FStream.hxx"
 #include <string.h>
 
+#include <memory> // IWYU pragma: keep
+
 static unsigned int const cmCryptoHashAlgoToId[] = {
   /* clang-format needs this comment to break after the opening brace */
   RHASH_MD5,      //
@@ -43,39 +46,39 @@ cmCryptoHash::~cmCryptoHash()
   rhash_free(this->CTX);
 }
 
-CM_AUTO_PTR<cmCryptoHash> cmCryptoHash::New(const char* algo)
+std::unique_ptr<cmCryptoHash> cmCryptoHash::New(const char* algo)
 {
   if (strcmp(algo, "MD5") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoMD5));
+    return cm::make_unique<cmCryptoHash>(AlgoMD5);
   }
   if (strcmp(algo, "SHA1") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA1));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA1);
   }
   if (strcmp(algo, "SHA224") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA224));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA224);
   }
   if (strcmp(algo, "SHA256") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA256));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA256);
   }
   if (strcmp(algo, "SHA384") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA384));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA384);
   }
   if (strcmp(algo, "SHA512") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA512));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA512);
   }
   if (strcmp(algo, "SHA3_224") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA3_224));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA3_224);
   }
   if (strcmp(algo, "SHA3_256") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA3_256));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA3_256);
   }
   if (strcmp(algo, "SHA3_384") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA3_384));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA3_384);
   }
   if (strcmp(algo, "SHA3_512") == 0) {
-    return CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(AlgoSHA3_512));
+    return cm::make_unique<cmCryptoHash>(AlgoSHA3_512);
   }
-  return CM_AUTO_PTR<cmCryptoHash>(CM_NULLPTR);
+  return std::unique_ptr<cmCryptoHash>(nullptr);
 }
 
 bool cmCryptoHash::IntFromHexDigit(char input, char& output)
@@ -103,10 +106,9 @@ std::string cmCryptoHash::ByteHashToString(
                                 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
 
   std::string res;
-  for (std::vector<unsigned char>::const_iterator vit = hash.begin();
-       vit != hash.end(); ++vit) {
-    res.push_back(hex[(*vit) >> 4]);
-    res.push_back(hex[(*vit) & 0xF]);
+  for (unsigned char v : hash) {
+    res.push_back(hex[v >> 4]);
+    res.push_back(hex[v & 0xF]);
   }
   return res;
 }
diff --git a/Source/cmCryptoHash.h b/Source/cmCryptoHash.h
index c380d85ff..1f2a1b52c 100644
--- a/Source/cmCryptoHash.h
+++ b/Source/cmCryptoHash.h
@@ -3,14 +3,13 @@
 #ifndef cmCryptoHash_h
 #define cmCryptoHash_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
+#include <memory> // IWYU pragma: keep
 #include <stddef.h>
 #include <string>
 #include <vector>
 
-#include "cm_auto_ptr.hxx"
-
 /**
  * @brief Abstract base class for cryptographic hash generators
  */
@@ -42,7 +41,7 @@ public:
   ///      SHA3_224, SHA3_256, SHA3_384, SHA3_512
   /// @return A valid auto pointer if algo is supported or
   ///         an invalid/NULL pointer otherwise
-  static CM_AUTO_PTR<cmCryptoHash> New(const char* algo);
+  static std::unique_ptr<cmCryptoHash> New(const char* algo);
 
   /// @brief Converts a hex character to its binary value (4 bits)
   /// @arg input Hex character [0-9a-fA-F].
diff --git a/Source/cmCurl.h b/Source/cmCurl.h
index a2fa4b1c0..0688bb2d7 100644
--- a/Source/cmCurl.h
+++ b/Source/cmCurl.h
@@ -3,11 +3,11 @@
 #ifndef cmCurl_h
 #define cmCurl_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cm_curl.h"
 #include <string>
 
-std::string cmCurlSetCAInfo(::CURL* curl, const char* cafile = CM_NULLPTR);
+std::string cmCurlSetCAInfo(::CURL* curl, const char* cafile = nullptr);
 
 #endif
diff --git a/Source/cmCustomCommand.cxx b/Source/cmCustomCommand.cxx
index 5e377b574..cfd260c23 100644
--- a/Source/cmCustomCommand.cxx
+++ b/Source/cmCustomCommand.cxx
@@ -4,8 +4,6 @@
 
 #include "cmMakefile.h"
 
-#include "cmConfigure.h"
-
 cmCustomCommand::cmCustomCommand()
   : Backtrace()
 {
@@ -30,7 +28,7 @@ cmCustomCommand::cmCustomCommand(cmMakefile const* mf,
   , Backtrace()
   , Comment(comment ? comment : "")
   , WorkingDirectory(workingDirectory ? workingDirectory : "")
-  , HaveComment(comment != CM_NULLPTR)
+  , HaveComment(comment != nullptr)
   , EscapeAllowMakeVars(false)
   , EscapeOldStyle(true)
   , CommandExpandLists(false)
@@ -62,7 +60,7 @@ const cmCustomCommandLines& cmCustomCommand::GetCommandLines() const
 
 const char* cmCustomCommand::GetComment() const
 {
-  const char* no_comment = CM_NULLPTR;
+  const char* no_comment = nullptr;
   return this->HaveComment ? this->Comment.c_str() : no_comment;
 }
 
diff --git a/Source/cmCustomCommandGenerator.cxx b/Source/cmCustomCommandGenerator.cxx
index 67213ecaa..3d816d562 100644
--- a/Source/cmCustomCommandGenerator.cxx
+++ b/Source/cmCustomCommandGenerator.cxx
@@ -11,9 +11,9 @@
 #include "cmOutputConverter.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 
-#include "cmConfigure.h"
+#include <memory> // IWYU pragma: keep
+#include <stddef.h>
 
 cmCustomCommandGenerator::cmCustomCommandGenerator(cmCustomCommand const& cc,
                                                    const std::string& config,
@@ -24,15 +24,13 @@ cmCustomCommandGenerator::cmCustomCommandGenerator(cmCustomCommand const& cc,
   , OldStyle(cc.GetEscapeOldStyle())
   , MakeVars(cc.GetEscapeAllowMakeVars())
   , GE(new cmGeneratorExpression(cc.GetBacktrace()))
-  , DependsDone(false)
 {
   const cmCustomCommandLines& cmdlines = this->CC.GetCommandLines();
-  for (cmCustomCommandLines::const_iterator cmdline = cmdlines.begin();
-       cmdline != cmdlines.end(); ++cmdline) {
+  for (cmCustomCommandLine const& cmdline : cmdlines) {
     cmCustomCommandLine argv;
-    for (cmCustomCommandLine::const_iterator clarg = cmdline->begin();
-         clarg != cmdline->end(); ++clarg) {
-      CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = this->GE->Parse(*clarg);
+    for (std::string const& clarg : cmdline) {
+      std::unique_ptr<cmCompiledGeneratorExpression> cge =
+        this->GE->Parse(clarg);
       std::string parsed_arg = cge->Evaluate(this->LG, this->Config);
       if (this->CC.GetCommandExpandLists()) {
         std::vector<std::string> ExpandedArg;
@@ -44,6 +42,20 @@ cmCustomCommandGenerator::cmCustomCommandGenerator(cmCustomCommand const& cc,
     }
     this->CommandLines.push_back(argv);
   }
+
+  std::vector<std::string> depends = this->CC.GetDepends();
+  for (std::string const& d : depends) {
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = this->GE->Parse(d);
+    std::vector<std::string> result;
+    cmSystemTools::ExpandListArgument(cge->Evaluate(this->LG, this->Config),
+                                      result);
+    for (std::string& it : result) {
+      if (cmSystemTools::FileIsFullPath(it.c_str())) {
+        it = cmSystemTools::CollapseFullPath(it);
+      }
+    }
+    this->Depends.insert(this->Depends.end(), result.begin(), result.end());
+  }
 }
 
 cmCustomCommandGenerator::~cmCustomCommandGenerator()
@@ -60,7 +72,7 @@ const char* cmCustomCommandGenerator::GetCrossCompilingEmulator(
   unsigned int c) const
 {
   if (!this->LG->GetMakefile()->IsOn("CMAKE_CROSSCOMPILING")) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   std::string const& argv0 = this->CommandLines[c][0];
   cmGeneratorTarget* target = this->LG->FindGeneratorTargetToUse(argv0);
@@ -68,7 +80,7 @@ const char* cmCustomCommandGenerator::GetCrossCompilingEmulator(
       !target->IsImported()) {
     return target->GetProperty("CROSSCOMPILING_EMULATOR");
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 const char* cmCustomCommandGenerator::GetArgv0Location(unsigned int c) const
@@ -81,7 +93,19 @@ const char* cmCustomCommandGenerator::GetArgv0Location(unsigned int c) const
        !this->LG->GetMakefile()->IsOn("CMAKE_CROSSCOMPILING"))) {
     return target->GetLocation(this->Config);
   }
-  return CM_NULLPTR;
+  return nullptr;
+}
+
+bool cmCustomCommandGenerator::HasOnlyEmptyCommandLines() const
+{
+  for (size_t i = 0; i < this->CommandLines.size(); ++i) {
+    for (size_t j = 0; j < this->CommandLines[i].size(); ++j) {
+      if (!this->CommandLines[i][j].empty()) {
+        return false;
+      }
+    }
+  }
+  return true;
 }
 
 std::string cmCustomCommandGenerator::GetCommand(unsigned int c) const
@@ -125,14 +149,13 @@ void cmCustomCommandGenerator::AppendArguments(unsigned int c,
                                                std::string& cmd) const
 {
   unsigned int offset = 1;
-  if (this->GetCrossCompilingEmulator(c) != CM_NULLPTR) {
+  if (this->GetCrossCompilingEmulator(c) != nullptr) {
     offset = 0;
   }
   cmCustomCommandLine const& commandLine = this->CommandLines[c];
   for (unsigned int j = offset; j < commandLine.size(); ++j) {
     std::string arg;
-    if (const char* location =
-          j == 0 ? this->GetArgv0Location(c) : CM_NULLPTR) {
+    if (const char* location = j == 0 ? this->GetArgv0Location(c) : nullptr) {
       // GetCommand returned the emulator instead of the argv0 location,
       // so transform the latter now.
       arg = location;
@@ -171,23 +194,5 @@ std::vector<std::string> const& cmCustomCommandGenerator::GetByproducts() const
 
 std::vector<std::string> const& cmCustomCommandGenerator::GetDepends() const
 {
-  if (!this->DependsDone) {
-    this->DependsDone = true;
-    std::vector<std::string> depends = this->CC.GetDepends();
-    for (std::vector<std::string>::const_iterator i = depends.begin();
-         i != depends.end(); ++i) {
-      CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = this->GE->Parse(*i);
-      std::vector<std::string> result;
-      cmSystemTools::ExpandListArgument(cge->Evaluate(this->LG, this->Config),
-                                        result);
-      for (std::vector<std::string>::iterator it = result.begin();
-           it != result.end(); ++it) {
-        if (cmSystemTools::FileIsFullPath(it->c_str())) {
-          *it = cmSystemTools::CollapseFullPath(*it);
-        }
-      }
-      this->Depends.insert(this->Depends.end(), result.begin(), result.end());
-    }
-  }
   return this->Depends;
 }
diff --git a/Source/cmCustomCommandGenerator.h b/Source/cmCustomCommandGenerator.h
index 0a2adb524..34fd653a5 100644
--- a/Source/cmCustomCommandGenerator.h
+++ b/Source/cmCustomCommandGenerator.h
@@ -21,9 +21,8 @@ class cmCustomCommandGenerator
   bool OldStyle;
   bool MakeVars;
   cmGeneratorExpression* GE;
-  mutable bool DependsDone;
-  mutable std::vector<std::string> Depends;
   cmCustomCommandLines CommandLines;
+  std::vector<std::string> Depends;
 
   const char* GetCrossCompilingEmulator(unsigned int c) const;
   const char* GetArgv0Location(unsigned int c) const;
@@ -41,6 +40,7 @@ public:
   std::vector<std::string> const& GetOutputs() const;
   std::vector<std::string> const& GetByproducts() const;
   std::vector<std::string> const& GetDepends() const;
+  bool HasOnlyEmptyCommandLines() const;
 };
 
 #endif
diff --git a/Source/cmDefinePropertyCommand.h b/Source/cmDefinePropertyCommand.h
index bc120c564..a9c185618 100644
--- a/Source/cmDefinePropertyCommand.h
+++ b/Source/cmDefinePropertyCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmDefinesPropertyCommand_h
 #define cmDefinesPropertyCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -15,14 +15,14 @@ class cmExecutionStatus;
 class cmDefinePropertyCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmDefinePropertyCommand; }
+  cmCommand* Clone() override { return new cmDefinePropertyCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the input file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   std::string PropertyName;
diff --git a/Source/cmDefinitions.cxx b/Source/cmDefinitions.cxx
index 7aa7641e1..e766854a6 100644
--- a/Source/cmDefinitions.cxx
+++ b/Source/cmDefinitions.cxx
@@ -2,7 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmDefinitions.h"
 
-#include "cmConfigure.h"
 #include <assert.h>
 #include <set>
 #include <utility>
@@ -35,7 +34,7 @@ const char* cmDefinitions::Get(const std::string& key, StackIter begin,
                                StackIter end)
 {
   Def const& def = cmDefinitions::GetInternal(key, begin, end, false);
-  return def.Exists ? def.c_str() : CM_NULLPTR;
+  return def.Exists ? def.c_str() : nullptr;
 }
 
 void cmDefinitions::Raise(const std::string& key, StackIter begin,
@@ -67,10 +66,9 @@ std::vector<std::string> cmDefinitions::UnusedKeys() const
   std::vector<std::string> keys;
   keys.reserve(this->Map.size());
   // Consider local definitions.
-  for (MapType::const_iterator mi = this->Map.begin(); mi != this->Map.end();
-       ++mi) {
-    if (!mi->second.Used) {
-      keys.push_back(mi->first);
+  for (auto const& mi : this->Map) {
+    if (!mi.second.Used) {
+      keys.push_back(mi.first);
     }
   }
   return keys;
@@ -82,15 +80,14 @@ cmDefinitions cmDefinitions::MakeClosure(StackIter begin, StackIter end)
   std::set<std::string> undefined;
   for (StackIter it = begin; it != end; ++it) {
     // Consider local definitions.
-    for (MapType::const_iterator mi = it->Map.begin(); mi != it->Map.end();
-         ++mi) {
+    for (auto const& mi : it->Map) {
       // Use this key if it is not already set or unset.
-      if (closure.Map.find(mi->first) == closure.Map.end() &&
-          undefined.find(mi->first) == undefined.end()) {
-        if (mi->second.Exists) {
-          closure.Map.insert(*mi);
+      if (closure.Map.find(mi.first) == closure.Map.end() &&
+          undefined.find(mi.first) == undefined.end()) {
+        if (mi.second.Exists) {
+          closure.Map.insert(mi);
         } else {
-          undefined.insert(mi->first);
+          undefined.insert(mi.first);
         }
       }
     }
@@ -106,11 +103,10 @@ std::vector<std::string> cmDefinitions::ClosureKeys(StackIter begin,
 
   for (StackIter it = begin; it != end; ++it) {
     defined.reserve(defined.size() + it->Map.size());
-    for (MapType::const_iterator mi = it->Map.begin(); mi != it->Map.end();
-         ++mi) {
+    for (auto const& mi : it->Map) {
       // Use this key if it is not already set or unset.
-      if (bound.insert(mi->first).second && mi->second.Exists) {
-        defined.push_back(mi->first);
+      if (bound.insert(mi.first).second && mi.second.Exists) {
+        defined.push_back(mi.first);
       }
     }
   }
diff --git a/Source/cmDefinitions.h b/Source/cmDefinitions.h
index ddb89188c..528b15748 100644
--- a/Source/cmDefinitions.h
+++ b/Source/cmDefinitions.h
@@ -6,10 +6,10 @@
 #include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
+#include <unordered_map>
 #include <vector>
 
 #include "cmLinkedTree.h"
-#include "cm_unordered_map.hxx"
 
 /** \class cmDefinitions
  * \brief Store a scope of variable definitions for CMake language.
@@ -70,7 +70,7 @@ private:
   };
   static Def NoDef;
 
-  typedef CM_UNORDERED_MAP<std::string, Def> MapType;
+  typedef std::unordered_map<std::string, Def> MapType;
   MapType Map;
 
   static Def const& GetInternal(const std::string& key, StackIter begin,
diff --git a/Source/cmDepends.cxx b/Source/cmDepends.cxx
index c898d12ba..cdab671a7 100644
--- a/Source/cmDepends.cxx
+++ b/Source/cmDepends.cxx
@@ -18,7 +18,7 @@ cmDepends::cmDepends(cmLocalGenerator* lg, const char* targetDir)
   : CompileDirectory()
   , LocalGenerator(lg)
   , Verbose(false)
-  , FileComparison(CM_NULLPTR)
+  , FileComparison(nullptr)
   , TargetDirectory(targetDir)
   , MaxPath(16384)
   , Dependee(new char[MaxPath])
@@ -42,7 +42,7 @@ bool cmDepends::Write(std::ostream& makeDepends, std::ostream& internalDepends)
   std::vector<std::string> pairs;
   cmSystemTools::ExpandListArgument(srcStr, pairs);
 
-  std::map<std::string, std::set<std::string> > dependencies;
+  std::map<std::string, std::set<std::string>> dependencies;
   for (std::vector<std::string>::iterator si = pairs.begin();
        si != pairs.end();) {
     // Get the source and object file.
@@ -53,12 +53,10 @@ bool cmDepends::Write(std::ostream& makeDepends, std::ostream& internalDepends)
     std::string const& obj = *si++;
     dependencies[obj].insert(src);
   }
-  for (std::map<std::string, std::set<std::string> >::const_iterator it =
-         dependencies.begin();
-       it != dependencies.end(); ++it) {
+  for (auto const& d : dependencies) {
 
     // Write the dependencies for this pair.
-    if (!this->WriteDependencies(it->second, it->first, makeDepends,
+    if (!this->WriteDependencies(d.second, d.first, makeDepends,
                                  internalDepends)) {
       return false;
     }
@@ -125,7 +123,7 @@ bool cmDepends::CheckDependencies(
   // regenerated.
   bool okay = true;
   bool dependerExists = false;
-  DependencyVector* currentDependencies = CM_NULLPTR;
+  DependencyVector* currentDependencies = nullptr;
 
   while (internalDepends.getline(this->Dependee, this->MaxPath)) {
     if (this->Dependee[0] == 0 || this->Dependee[0] == '#' ||
@@ -167,7 +165,7 @@ bool cmDepends::CheckDependencies(
     bool regenerate = false;
     const char* dependee = this->Dependee + 1;
     const char* depender = this->Depender;
-    if (currentDependencies != CM_NULLPTR) {
+    if (currentDependencies != nullptr) {
       currentDependencies->push_back(dependee);
     }
 
@@ -227,9 +225,9 @@ bool cmDepends::CheckDependencies(
 
       // Remove the information of this depender from the map, it needs
       // to be rescanned
-      if (currentDependencies != CM_NULLPTR) {
+      if (currentDependencies != nullptr) {
         validDeps.erase(this->Depender);
-        currentDependencies = CM_NULLPTR;
+        currentDependencies = nullptr;
       }
 
       // Remove the depender to be sure it is rebuilt.
@@ -246,7 +244,7 @@ bool cmDepends::CheckDependencies(
 void cmDepends::SetIncludePathFromLanguage(const std::string& lang)
 {
   // Look for the new per "TARGET_" variant first:
-  const char* includePath = CM_NULLPTR;
+  const char* includePath = nullptr;
   std::string includePathVar = "CMAKE_";
   includePathVar += lang;
   includePathVar += "_TARGET_INCLUDE_PATH";
diff --git a/Source/cmDepends.h b/Source/cmDepends.h
index b33feb902..a4fee3c8a 100644
--- a/Source/cmDepends.h
+++ b/Source/cmDepends.h
@@ -3,7 +3,7 @@
 #ifndef cmDepends_h
 #define cmDepends_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <map>
@@ -29,7 +29,7 @@ class cmDepends
 public:
   /** Instances need to know the build directory name and the relative
       path from the build directory to the target file.  */
-  cmDepends(cmLocalGenerator* lg = CM_NULLPTR, const char* targetDir = "");
+  cmDepends(cmLocalGenerator* lg = nullptr, const char* targetDir = "");
 
   /** at what level will the compile be done from */
   void SetCompileDirectory(const char* dir) { this->CompileDirectory = dir; }
diff --git a/Source/cmDependsC.cxx b/Source/cmDependsC.cxx
index 2c464cc9c..1ab3fa244 100644
--- a/Source/cmDependsC.cxx
+++ b/Source/cmDependsC.cxx
@@ -20,7 +20,7 @@
 #define INCLUDE_REGEX_TRANSFORM_MARKER "#IncludeRegexTransform: "
 
 cmDependsC::cmDependsC()
-  : ValidDeps(CM_NULLPTR)
+  : ValidDeps(nullptr)
 {
 }
 
@@ -96,7 +96,7 @@ bool cmDependsC::WriteDependencies(const std::set<std::string>& sources,
   std::set<std::string> dependencies;
   bool haveDeps = false;
 
-  if (this->ValidDeps != CM_NULLPTR) {
+  if (this->ValidDeps != nullptr) {
     std::map<std::string, DependencyVector>::const_iterator tmpIt =
       this->ValidDeps->find(obj);
     if (tmpIt != this->ValidDeps->end()) {
@@ -107,15 +107,14 @@ bool cmDependsC::WriteDependencies(const std::set<std::string>& sources,
 
   if (!haveDeps) {
     // Walk the dependency graph starting with the source file.
-    int srcFiles = (int)sources.size();
+    int srcFiles = static_cast<int>(sources.size());
     this->Encountered.clear();
 
-    for (std::set<std::string>::const_iterator srcIt = sources.begin();
-         srcIt != sources.end(); ++srcIt) {
+    for (std::string const& src : sources) {
       UnscannedEntry root;
-      root.FileName = *srcIt;
+      root.FileName = src;
       this->Unscanned.push(root);
-      this->Encountered.insert(*srcIt);
+      this->Encountered.insert(src);
     }
 
     std::set<std::string> scanned;
@@ -150,14 +149,12 @@ bool cmDependsC::WriteDependencies(const std::set<std::string>& sources,
         if (headerLocationIt != this->HeaderLocationCache.end()) {
           fullName = headerLocationIt->second;
         } else {
-          for (std::vector<std::string>::const_iterator i =
-                 this->IncludePath.begin();
-               i != this->IncludePath.end(); ++i) {
+          for (std::string const& i : this->IncludePath) {
             // Construct the name of the file as if it were in the current
             // include directory.  Avoid using a leading "./".
 
             tempPathStr =
-              cmSystemTools::CollapseCombinedPath(*i, current.FileName);
+              cmSystemTools::CollapseCombinedPath(i, current.FileName);
 
             // Look for the file in this location.
             if (cmSystemTools::FileExists(tempPathStr.c_str(), true)) {
@@ -189,13 +186,11 @@ bool cmDependsC::WriteDependencies(const std::set<std::string>& sources,
         if (fileIt != this->FileCache.end()) {
           fileIt->second->Used = true;
           dependencies.insert(fullName);
-          for (std::vector<UnscannedEntry>::const_iterator incIt =
-                 fileIt->second->UnscannedEntries.begin();
-               incIt != fileIt->second->UnscannedEntries.end(); ++incIt) {
-            if (this->Encountered.find(incIt->FileName) ==
+          for (UnscannedEntry const& inc : fileIt->second->UnscannedEntries) {
+            if (this->Encountered.find(inc.FileName) ==
                 this->Encountered.end()) {
-              this->Encountered.insert(incIt->FileName);
-              this->Unscanned.push(*incIt);
+              this->Encountered.insert(inc.FileName);
+              this->Unscanned.push(inc);
             }
           }
         } else {
@@ -234,14 +229,13 @@ bool cmDependsC::WriteDependencies(const std::set<std::string>& sources,
   std::string obj_m = cmSystemTools::ConvertToOutputPath(obj_i.c_str());
   internalDepends << obj_i << std::endl;
 
-  for (std::set<std::string>::const_iterator i = dependencies.begin();
-       i != dependencies.end(); ++i) {
+  for (std::string const& dep : dependencies) {
     makeDepends
       << obj_m << ": "
       << cmSystemTools::ConvertToOutputPath(
-           this->LocalGenerator->ConvertToRelativePath(binDir, *i).c_str())
+           this->LocalGenerator->ConvertToRelativePath(binDir, dep).c_str())
       << std::endl;
-    internalDepends << " " << *i << std::endl;
+    internalDepends << " " << dep << std::endl;
   }
   makeDepends << std::endl;
 
@@ -259,12 +253,12 @@ void cmDependsC::ReadCacheFile()
   }
 
   std::string line;
-  cmIncludeLines* cacheEntry = CM_NULLPTR;
+  cmIncludeLines* cacheEntry = nullptr;
   bool haveFileName = false;
 
   while (cmSystemTools::GetLineFromStream(fin, line)) {
     if (line.empty()) {
-      cacheEntry = CM_NULLPTR;
+      cacheEntry = nullptr;
       haveFileName = false;
       continue;
     }
@@ -302,7 +296,7 @@ void cmDependsC::ReadCacheFile()
           }
         }
       }
-    } else if (cacheEntry != CM_NULLPTR) {
+    } else if (cacheEntry != nullptr) {
       UnscannedEntry entry;
       entry.FileName = line;
       if (cmSystemTools::GetLineFromStream(fin, line)) {
@@ -330,20 +324,16 @@ void cmDependsC::WriteCacheFile() const
   cacheOut << this->IncludeRegexComplainString << "\n\n";
   cacheOut << this->IncludeRegexTransformString << "\n\n";
 
-  for (std::map<std::string, cmIncludeLines*>::const_iterator fileIt =
-         this->FileCache.begin();
-       fileIt != this->FileCache.end(); ++fileIt) {
-    if (fileIt->second->Used) {
-      cacheOut << fileIt->first << std::endl;
-
-      for (std::vector<UnscannedEntry>::const_iterator incIt =
-             fileIt->second->UnscannedEntries.begin();
-           incIt != fileIt->second->UnscannedEntries.end(); ++incIt) {
-        cacheOut << incIt->FileName << std::endl;
-        if (incIt->QuotedLocation.empty()) {
+  for (auto const& fileIt : this->FileCache) {
+    if (fileIt.second->Used) {
+      cacheOut << fileIt.first << std::endl;
+
+      for (UnscannedEntry const& inc : fileIt.second->UnscannedEntries) {
+        cacheOut << inc.FileName << std::endl;
+        if (inc.QuotedLocation.empty()) {
           cacheOut << "-" << std::endl;
         } else {
-          cacheOut << incIt->QuotedLocation << std::endl;
+          cacheOut << inc.QuotedLocation << std::endl;
         }
       }
       cacheOut << std::endl;
@@ -411,9 +401,8 @@ void cmDependsC::SetupTransforms()
   if (const char* xform = mf->GetDefinition("CMAKE_INCLUDE_TRANSFORMS")) {
     cmSystemTools::ExpandListArgument(xform, transformRules, true);
   }
-  for (std::vector<std::string>::const_iterator tri = transformRules.begin();
-       tri != transformRules.end(); ++tri) {
-    this->ParseTransform(*tri);
+  for (std::string const& tr : transformRules) {
+    this->ParseTransform(tr);
   }
 
   this->IncludeRegexTransformString = INCLUDE_REGEX_TRANSFORM_MARKER;
@@ -422,10 +411,9 @@ void cmDependsC::SetupTransforms()
     // transformed.
     std::string xform = "^([ \t]*[#%][ \t]*(include|import)[ \t]*)(";
     const char* sep = "";
-    for (TransformRulesType::const_iterator tri = this->TransformRules.begin();
-         tri != this->TransformRules.end(); ++tri) {
+    for (auto const& tr : this->TransformRules) {
       xform += sep;
-      xform += tri->first;
+      xform += tr.first;
       sep = "|";
     }
     xform += ")[ \t]*\\(([^),]*)\\)";
@@ -434,12 +422,11 @@ void cmDependsC::SetupTransforms()
     // Build a string that encodes all transformation rules and will
     // change when rules are changed.
     this->IncludeRegexTransformString += xform;
-    for (TransformRulesType::const_iterator tri = this->TransformRules.begin();
-         tri != this->TransformRules.end(); ++tri) {
+    for (auto const& tr : this->TransformRules) {
       this->IncludeRegexTransformString += " ";
-      this->IncludeRegexTransformString += tri->first;
+      this->IncludeRegexTransformString += tr.first;
       this->IncludeRegexTransformString += "(%)=";
-      this->IncludeRegexTransformString += tri->second;
+      this->IncludeRegexTransformString += tr.second;
     }
   }
 }
diff --git a/Source/cmDependsC.h b/Source/cmDependsC.h
index 250d40f8a..2f76f6275 100644
--- a/Source/cmDependsC.h
+++ b/Source/cmDependsC.h
@@ -3,7 +3,7 @@
 #ifndef cmDependsC_h
 #define cmDependsC_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmDepends.h"
 
@@ -33,13 +33,13 @@ public:
              const std::map<std::string, DependencyVector>* validDeps);
 
   /** Virtual destructor to cleanup subclasses properly.  */
-  ~cmDependsC() CM_OVERRIDE;
+  ~cmDependsC() override;
 
 protected:
   // Implement writing/checking methods required by superclass.
   bool WriteDependencies(const std::set<std::string>& sources,
                          const std::string& obj, std::ostream& makeDepends,
-                         std::ostream& internalDepends) CM_OVERRIDE;
+                         std::ostream& internalDepends) override;
 
   // Method to scan a single file.
   void Scan(std::istream& is, const char* directory,
diff --git a/Source/cmDependsFortran.cxx b/Source/cmDependsFortran.cxx
index 8b05fab49..fdbc08627 100644
--- a/Source/cmDependsFortran.cxx
+++ b/Source/cmDependsFortran.cxx
@@ -52,7 +52,7 @@ public:
 };
 
 cmDependsFortran::cmDependsFortran()
-  : Internal(CM_NULLPTR)
+  : Internal(nullptr)
 {
 }
 
@@ -73,12 +73,10 @@ cmDependsFortran::cmDependsFortran(cmLocalGenerator* lg)
 
   // translate i.e. FOO=BAR to FOO and add it to the list of defined
   // preprocessor symbols
-  for (std::vector<std::string>::const_iterator it = definitions.begin();
-       it != definitions.end(); ++it) {
-    std::string def = *it;
+  for (std::string def : definitions) {
     std::string::size_type assignment = def.find('=');
     if (assignment != std::string::npos) {
-      def = it->substr(0, assignment);
+      def = def.substr(0, assignment);
     }
     this->PPDefinitions.insert(def);
   }
@@ -105,9 +103,7 @@ bool cmDependsFortran::WriteDependencies(const std::set<std::string>& sources,
   }
 
   bool okay = true;
-  for (std::set<std::string>::const_iterator it = sources.begin();
-       it != sources.end(); ++it) {
-    const std::string& src = *it;
+  for (std::string const& src : sources) {
     // Get the information object for this source.
     cmFortranSourceInfo& info =
       this->Internal->CreateObjectInfo(obj.c_str(), src.c_str());
@@ -154,9 +150,8 @@ bool cmDependsFortran::Finalize(std::ostream& makeDepends,
   // Actually write dependencies to the streams.
   typedef cmDependsFortranInternals::ObjectInfoMap ObjectInfoMap;
   ObjectInfoMap const& objInfo = this->Internal->ObjectInfo;
-  for (ObjectInfoMap::const_iterator i = objInfo.begin(); i != objInfo.end();
-       ++i) {
-    if (!this->WriteDependenciesReal(i->first.c_str(), i->second, mod_dir,
+  for (auto const& i : objInfo) {
+    if (!this->WriteDependenciesReal(i.first.c_str(), i.second, mod_dir,
                                      stamp_dir, makeDepends,
                                      internalDepends)) {
       return false;
@@ -170,9 +165,8 @@ bool cmDependsFortran::Finalize(std::ostream& makeDepends,
   fiStream << "# The fortran modules provided by this target.\n";
   fiStream << "provides\n";
   std::set<std::string> const& provides = this->Internal->TargetProvides;
-  for (std::set<std::string>::const_iterator i = provides.begin();
-       i != provides.end(); ++i) {
-    fiStream << " " << *i << "\n";
+  for (std::string const& i : provides) {
+    fiStream << " " << i << "\n";
   }
 
   // Create a script to clean the modules.
@@ -184,19 +178,18 @@ bool cmDependsFortran::Finalize(std::ostream& makeDepends,
     fcStream << "FILE(REMOVE";
     std::string currentBinDir =
       this->LocalGenerator->GetCurrentBinaryDirectory();
-    for (std::set<std::string>::const_iterator i = provides.begin();
-         i != provides.end(); ++i) {
+    for (std::string const& i : provides) {
       std::string mod_upper = mod_dir;
       mod_upper += "/";
-      mod_upper += cmSystemTools::UpperCase(*i);
+      mod_upper += cmSystemTools::UpperCase(i);
       mod_upper += ".mod";
       std::string mod_lower = mod_dir;
       mod_lower += "/";
-      mod_lower += *i;
+      mod_lower += i;
       mod_lower += ".mod";
       std::string stamp = stamp_dir;
       stamp += "/";
-      stamp += *i;
+      stamp += i;
       stamp += ".mod.stamp";
       fcStream << "\n";
       fcStream << "  \""
@@ -219,16 +212,14 @@ void cmDependsFortran::LocateModules()
   // Collect the set of modules provided and required by all sources.
   typedef cmDependsFortranInternals::ObjectInfoMap ObjectInfoMap;
   ObjectInfoMap const& objInfo = this->Internal->ObjectInfo;
-  for (ObjectInfoMap::const_iterator infoI = objInfo.begin();
-       infoI != objInfo.end(); ++infoI) {
-    cmFortranSourceInfo const& info = infoI->second;
+  for (auto const& infoI : objInfo) {
+    cmFortranSourceInfo const& info = infoI.second;
     // Include this module in the set provided by this target.
     this->Internal->TargetProvides.insert(info.Provides.begin(),
                                           info.Provides.end());
 
-    for (std::set<std::string>::const_iterator i = info.Requires.begin();
-         i != info.Requires.end(); ++i) {
-      this->Internal->TargetRequires[*i] = "";
+    for (std::string const& r : info.Requires) {
+      this->Internal->TargetRequires[r].clear();
     }
   }
 
@@ -247,9 +238,8 @@ void cmDependsFortran::LocateModules()
         mf->GetDefinition("CMAKE_TARGET_LINKED_INFO_FILES")) {
     cmSystemTools::ExpandListArgument(infoFilesValue, infoFiles);
   }
-  for (std::vector<std::string>::const_iterator i = infoFiles.begin();
-       i != infoFiles.end(); ++i) {
-    std::string targetDir = cmSystemTools::GetFilenamePath(*i);
+  for (std::string const& i : infoFiles) {
+    std::string targetDir = cmSystemTools::GetFilenamePath(i);
     std::string fname = targetDir + "/fortran.internal";
     cmsys::ifstream fin(fname.c_str());
     if (fin) {
@@ -262,9 +252,8 @@ void cmDependsFortran::MatchLocalModules()
 {
   const char* stampDir = this->TargetDirectory.c_str();
   std::set<std::string> const& provides = this->Internal->TargetProvides;
-  for (std::set<std::string>::const_iterator i = provides.begin();
-       i != provides.end(); ++i) {
-    this->ConsiderModule(i->c_str(), stampDir);
+  for (std::string const& i : provides) {
+    this->ConsiderModule(i.c_str(), stampDir);
   }
 }
 
@@ -326,35 +315,32 @@ bool cmDependsFortran::WriteDependenciesReal(const char* obj,
   std::string obj_m = cmSystemTools::ConvertToOutputPath(obj_i.c_str());
   internalDepends << obj_i << std::endl;
   internalDepends << " " << src << std::endl;
-  for (std::set<std::string>::const_iterator i = info.Includes.begin();
-       i != info.Includes.end(); ++i) {
+  for (std::string const& i : info.Includes) {
     makeDepends << obj_m << ": "
                 << cmSystemTools::ConvertToOutputPath(
-                     this->MaybeConvertToRelativePath(binDir, *i).c_str())
+                     this->MaybeConvertToRelativePath(binDir, i).c_str())
                 << std::endl;
-    internalDepends << " " << *i << std::endl;
+    internalDepends << " " << i << std::endl;
   }
   makeDepends << std::endl;
 
   // Write module requirements to the output stream.
-  for (std::set<std::string>::const_iterator i = info.Requires.begin();
-       i != info.Requires.end(); ++i) {
+  for (std::string const& i : info.Requires) {
     // Require only modules not provided in the same source.
-    if (std::set<std::string>::const_iterator(info.Provides.find(*i)) !=
-        info.Provides.end()) {
+    if (info.Provides.find(i) != info.Provides.cend()) {
       continue;
     }
 
     // If the module is provided in this target special handling is
     // needed.
-    if (this->Internal->TargetProvides.find(*i) !=
+    if (this->Internal->TargetProvides.find(i) !=
         this->Internal->TargetProvides.end()) {
       // The module is provided by a different source in the same
       // target.  Add the proxy dependency to make sure the other
       // source builds first.
       std::string proxy = stamp_dir;
       proxy += "/";
-      proxy += *i;
+      proxy += i;
       proxy += ".mod.proxy";
       proxy = cmSystemTools::ConvertToOutputPath(
         this->MaybeConvertToRelativePath(binDir, proxy).c_str());
@@ -366,7 +352,7 @@ bool cmDependsFortran::WriteDependenciesReal(const char* obj,
     // The object file should depend on timestamped files for the
     // modules it uses.
     TargetRequiresMap::const_iterator required =
-      this->Internal->TargetRequires.find(*i);
+      this->Internal->TargetRequires.find(i);
     if (required == this->Internal->TargetRequires.end()) {
       abort();
     }
@@ -379,7 +365,7 @@ bool cmDependsFortran::WriteDependenciesReal(const char* obj,
       // This module is not known to CMake.  Try to locate it where
       // the compiler will and depend on that.
       std::string module;
-      if (this->FindModule(*i, module)) {
+      if (this->FindModule(i, module)) {
         module = cmSystemTools::ConvertToOutputPath(
           this->MaybeConvertToRelativePath(binDir, module).c_str());
         makeDepends << obj_m << ": " << module << "\n";
@@ -388,11 +374,10 @@ bool cmDependsFortran::WriteDependenciesReal(const char* obj,
   }
 
   // Write provided modules to the output stream.
-  for (std::set<std::string>::const_iterator i = info.Provides.begin();
-       i != info.Provides.end(); ++i) {
+  for (std::string const& i : info.Provides) {
     std::string proxy = stamp_dir;
     proxy += "/";
-    proxy += *i;
+    proxy += i;
     proxy += ".mod.proxy";
     proxy = cmSystemTools::ConvertToOutputPath(
       this->MaybeConvertToRelativePath(binDir, proxy).c_str());
@@ -404,18 +389,17 @@ bool cmDependsFortran::WriteDependenciesReal(const char* obj,
     // Create a target to copy the module after the object file
     // changes.
     makeDepends << obj_m << ".provides.build:\n";
-    for (std::set<std::string>::const_iterator i = info.Provides.begin();
-         i != info.Provides.end(); ++i) {
+    for (std::string const& i : info.Provides) {
       // Include this module in the set provided by this target.
-      this->Internal->TargetProvides.insert(*i);
+      this->Internal->TargetProvides.insert(i);
 
       // Always use lower case for the mod stamp file name.  The
       // cmake_copy_f90_mod will call back to this class, which will
       // try various cases for the real mod file name.
-      std::string m = cmSystemTools::LowerCase(*i);
+      std::string m = cmSystemTools::LowerCase(i);
       std::string modFile = mod_dir;
       modFile += "/";
-      modFile += *i;
+      modFile += i;
       modFile = this->LocalGenerator->ConvertToOutputFormat(
         this->MaybeConvertToRelativePath(binDir, modFile),
         cmOutputConverter::SHELL);
@@ -462,10 +446,9 @@ bool cmDependsFortran::FindModule(std::string const& name, std::string& module)
 
   // Search the include path for the module.
   std::string fullName;
-  for (std::vector<std::string>::const_iterator i = this->IncludePath.begin();
-       i != this->IncludePath.end(); ++i) {
+  for (std::string const& ip : this->IncludePath) {
     // Try the lower-case name.
-    fullName = *i;
+    fullName = ip;
     fullName += "/";
     fullName += mod_lower;
     if (cmSystemTools::FileExists(fullName.c_str(), true)) {
@@ -474,7 +457,7 @@ bool cmDependsFortran::FindModule(std::string const& name, std::string& module)
     }
 
     // Try the upper-case name.
-    fullName = *i;
+    fullName = ip;
     fullName += "/";
     fullName += mod_upper;
     if (cmSystemTools::FileExists(fullName.c_str(), true)) {
diff --git a/Source/cmDependsFortran.h b/Source/cmDependsFortran.h
index ec208af3a..ccf267b2f 100644
--- a/Source/cmDependsFortran.h
+++ b/Source/cmDependsFortran.h
@@ -3,7 +3,7 @@
 #ifndef cmFortran_h
 #define cmFortran_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <set>
@@ -35,7 +35,7 @@ public:
   cmDependsFortran(cmLocalGenerator* lg);
 
   /** Virtual destructor to cleanup subclasses properly.  */
-  ~cmDependsFortran() CM_OVERRIDE;
+  ~cmDependsFortran() override;
 
   /** Callback from build system after a .mod file has been generated
       by a Fortran90 compiler to copy the .mod file to the
@@ -50,7 +50,7 @@ public:
 protected:
   // Finalize the dependency information for the target.
   bool Finalize(std::ostream& makeDepends,
-                std::ostream& internalDepends) CM_OVERRIDE;
+                std::ostream& internalDepends) override;
 
   // Find all the modules required by the target.
   void LocateModules();
@@ -62,7 +62,7 @@ protected:
   // Implement writing/checking methods required by superclass.
   bool WriteDependencies(const std::set<std::string>& sources,
                          const std::string& file, std::ostream& makeDepends,
-                         std::ostream& internalDepends) CM_OVERRIDE;
+                         std::ostream& internalDepends) override;
 
   // Actually write the depenencies to the streams.
   bool WriteDependenciesReal(const char* obj, cmFortranSourceInfo const& info,
diff --git a/Source/cmDependsJava.h b/Source/cmDependsJava.h
index a07bf0979..d070840ad 100644
--- a/Source/cmDependsJava.h
+++ b/Source/cmDependsJava.h
@@ -3,7 +3,7 @@
 #ifndef cmDependsJava_h
 #define cmDependsJava_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmDepends.h"
 
@@ -25,16 +25,16 @@ public:
   cmDependsJava();
 
   /** Virtual destructor to cleanup subclasses properly.  */
-  ~cmDependsJava() CM_OVERRIDE;
+  ~cmDependsJava() override;
 
 protected:
   // Implement writing/checking methods required by superclass.
   bool WriteDependencies(const std::set<std::string>& sources,
                          const std::string& file, std::ostream& makeDepends,
-                         std::ostream& internalDepends) CM_OVERRIDE;
+                         std::ostream& internalDepends) override;
   bool CheckDependencies(
     std::istream& internalDepends, const char* internalDependsFileName,
-    std::map<std::string, DependencyVector>& validDeps) CM_OVERRIDE;
+    std::map<std::string, DependencyVector>& validDeps) override;
 };
 
 #endif
diff --git a/Source/cmDependsJavaParserHelper.cxx b/Source/cmDependsJavaParserHelper.cxx
index 7bc91bfd4..f227cf25b 100644
--- a/Source/cmDependsJavaParserHelper.cxx
+++ b/Source/cmDependsJavaParserHelper.cxx
@@ -2,8 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmDependsJavaParserHelper.h"
 
-#include "cmConfigure.h"
-
 #include "cmDependsJavaLexer.h"
 #include "cmSystemTools.h"
 
@@ -42,10 +40,8 @@ void cmDependsJavaParserHelper::CurrentClass::AddFileNamesForPrinting(
   }
   rname += this->Name;
   files->push_back(rname);
-  std::vector<CurrentClass>::const_iterator it;
-  for (it = this->NestedClasses.begin(); it != this->NestedClasses.end();
-       ++it) {
-    it->AddFileNamesForPrinting(files, rname.c_str(), sep);
+  for (CurrentClass const& nc : this->NestedClasses) {
+    nc.AddFileNamesForPrinting(files, rname.c_str(), sep);
   }
 }
 
@@ -57,7 +53,7 @@ void cmDependsJavaParserHelper::DeallocateParserType(char** pt)
   if (!*pt) {
     return;
   }
-  *pt = CM_NULLPTR;
+  *pt = nullptr;
   this->UnionsAvailable--;
 }
 
@@ -66,9 +62,8 @@ void cmDependsJavaParserHelper::AddClassFound(const char* sclass)
   if (!sclass) {
     return;
   }
-  std::vector<std::string>::iterator it;
-  for (it = this->ClassesFound.begin(); it != this->ClassesFound.end(); it++) {
-    if (*it == sclass) {
+  for (std::string const& cf : this->ClassesFound) {
+    if (cf == sclass) {
       return;
     }
   }
@@ -77,10 +72,8 @@ void cmDependsJavaParserHelper::AddClassFound(const char* sclass)
 
 void cmDependsJavaParserHelper::AddPackagesImport(const char* sclass)
 {
-  std::vector<std::string>::iterator it;
-  for (it = this->PackagesImport.begin(); it != this->PackagesImport.end();
-       it++) {
-    if (*it == sclass) {
+  for (std::string const& pi : this->PackagesImport) {
+    if (pi == sclass) {
       return;
     }
   }
@@ -96,9 +89,9 @@ void cmDependsJavaParserHelper::SafePrintMissing(const char* str, int line,
     for (cc = 0; cc < strlen(str); cc++) {
       unsigned char ch = str[cc];
       if (ch >= 32 && ch <= 126) {
-        std::cout << (char)ch;
+        std::cout << static_cast<char>(ch);
       } else {
-        std::cout << "<" << (int)ch << ">";
+        std::cout << "<" << static_cast<int>(ch) << ">";
         break;
       }
     }
@@ -158,15 +151,15 @@ void cmDependsJavaParserHelper::PrepareElement(
   cmDependsJavaParserHelper::ParserType* me)
 {
   // Inititalize self
-  me->str = CM_NULLPTR;
+  me->str = nullptr;
 }
 
 void cmDependsJavaParserHelper::AllocateParserType(
   cmDependsJavaParserHelper::ParserType* pt, const char* str, int len)
 {
-  pt->str = CM_NULLPTR;
+  pt->str = nullptr;
   if (len == 0) {
-    len = (int)strlen(str);
+    len = static_cast<int>(strlen(str));
   }
   if (len == 0) {
     return;
@@ -210,10 +203,8 @@ void cmDependsJavaParserHelper::PrintClasses()
     std::cerr << "Error when parsing. No classes on class stack" << std::endl;
     abort();
   }
-  std::vector<std::string> files = this->GetFilesProduced();
-  std::vector<std::string>::iterator sit;
-  for (sit = files.begin(); sit != files.end(); ++sit) {
-    std::cout << "  " << *sit << ".class" << std::endl;
+  for (std::string const& f : this->GetFilesProduced()) {
+    std::cout << "  " << f << ".class" << std::endl;
   }
 }
 
@@ -221,10 +212,8 @@ std::vector<std::string> cmDependsJavaParserHelper::GetFilesProduced()
 {
   std::vector<std::string> files;
   CurrentClass const& toplevel = this->ClassStack.front();
-  std::vector<CurrentClass>::const_iterator it;
-  for (it = toplevel.NestedClasses.begin(); it != toplevel.NestedClasses.end();
-       ++it) {
-    it->AddFileNamesForPrinting(&files, CM_NULLPTR, "$");
+  for (CurrentClass const& nc : toplevel.NestedClasses) {
+    nc.AddFileNamesForPrinting(&files, nullptr, "$");
   }
   return files;
 }
@@ -264,10 +253,8 @@ int cmDependsJavaParserHelper::ParseString(const char* str, int verb)
     std::cout << std::endl;
     std::cout << "Depends on:";
     if (!this->ClassesFound.empty()) {
-      std::vector<std::string>::iterator it;
-      for (it = this->ClassesFound.begin(); it != this->ClassesFound.end();
-           ++it) {
-        std::cout << " " << *it;
+      for (std::string const& cf : this->ClassesFound) {
+        std::cout << " " << cf;
       }
     }
     std::cout << std::endl;
@@ -284,9 +271,8 @@ int cmDependsJavaParserHelper::ParseString(const char* str, int verb)
 
 void cmDependsJavaParserHelper::CleanupParser()
 {
-  std::vector<char*>::iterator it;
-  for (it = this->Allocates.begin(); it != this->Allocates.end(); ++it) {
-    delete[] * it;
+  for (char* allocate : this->Allocates) {
+    delete[] allocate;
   }
   this->Allocates.erase(this->Allocates.begin(), this->Allocates.end());
 }
@@ -324,7 +310,7 @@ void cmDependsJavaParserHelper::Error(const char* str)
 void cmDependsJavaParserHelper::UpdateCombine(const char* str1,
                                               const char* str2)
 {
-  if (this->CurrentCombine == "" && str1 != CM_NULLPTR) {
+  if (this->CurrentCombine.empty() && str1 != nullptr) {
     this->CurrentCombine = str1;
   }
   this->CurrentCombine += ".";
diff --git a/Source/cmDisallowedCommand.h b/Source/cmDisallowedCommand.h
index 0030116b8..d85c00f8c 100644
--- a/Source/cmDisallowedCommand.h
+++ b/Source/cmDisallowedCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmDisallowedCommand_h
 #define cmDisallowedCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,23 +24,20 @@ public:
   {
   }
 
-  ~cmDisallowedCommand() CM_OVERRIDE { delete this->Command; }
+  ~cmDisallowedCommand() override { delete this->Command; }
 
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     return new cmDisallowedCommand(this->Command->Clone(), this->Policy,
                                    this->Message);
   }
 
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
-  void FinalPass() CM_OVERRIDE { this->Command->FinalPass(); }
+  void FinalPass() override { this->Command->FinalPass(); }
 
-  bool HasFinalPass() const CM_OVERRIDE
-  {
-    return this->Command->HasFinalPass();
-  }
+  bool HasFinalPass() const override { return this->Command->HasFinalPass(); }
 
 private:
   cmCommand* Command;
diff --git a/Source/cmDocumentation.cxx b/Source/cmDocumentation.cxx
index c6286b35a..0c9686087 100644
--- a/Source/cmDocumentation.cxx
+++ b/Source/cmDocumentation.cxx
@@ -41,12 +41,12 @@ static const char* cmDocumentationStandardOptions[][2] = {
   { "--help-variable-list [<f>]",
     "List variables with help available and exit." },
   { "--help-variables [<f>]", "Print cmake-variables manual and exit." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationGeneratorsHeader[][2] = {
-  { CM_NULLPTR, "The following generators are available on this platform:" },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "The following generators are available on this platform:" },
+  { nullptr, nullptr }
 };
 
 cmDocumentation::cmDocumentation()
@@ -123,23 +123,21 @@ bool cmDocumentation::PrintRequestedDocumentation(std::ostream& os)
   bool result = true;
 
   // Loop over requested documentation types.
-  for (std::vector<RequestedHelpItem>::const_iterator i =
-         this->RequestedHelpItems.begin();
-       i != this->RequestedHelpItems.end(); ++i) {
-    this->CurrentArgument = i->Argument;
+  for (RequestedHelpItem const& rhi : this->RequestedHelpItems) {
+    this->CurrentArgument = rhi.Argument;
     // If a file name was given, use it.  Otherwise, default to the
     // given stream.
     cmsys::ofstream fout;
     std::ostream* s = &os;
-    if (!i->Filename.empty()) {
-      fout.open(i->Filename.c_str());
+    if (!rhi.Filename.empty()) {
+      fout.open(rhi.Filename.c_str());
       s = &fout;
     } else if (++count > 1) {
       os << "\n\n";
     }
 
     // Print this documentation type to the stream.
-    if (!this->PrintDocumentation(i->HelpType, *s) || s->fail()) {
+    if (!this->PrintDocumentation(rhi.HelpType, *s) || s->fail()) {
       result = false;
     }
   }
@@ -394,16 +392,14 @@ void cmDocumentation::SetSection(const char* name, const char* docs[][2])
 void cmDocumentation::SetSections(
   std::map<std::string, cmDocumentationSection*>& sections)
 {
-  for (std::map<std::string, cmDocumentationSection*>::const_iterator it =
-         sections.begin();
-       it != sections.end(); ++it) {
-    this->SetSection(it->first.c_str(), it->second);
+  for (auto const& s : sections) {
+    this->SetSection(s.first.c_str(), s.second);
   }
 }
 
 void cmDocumentation::PrependSection(const char* name, const char* docs[][2])
 {
-  cmDocumentationSection* sec = CM_NULLPTR;
+  cmDocumentationSection* sec = nullptr;
   if (this->AllSections.find(name) == this->AllSections.end()) {
     sec =
       new cmDocumentationSection(name, cmSystemTools::UpperCase(name).c_str());
@@ -417,7 +413,7 @@ void cmDocumentation::PrependSection(const char* name, const char* docs[][2])
 void cmDocumentation::PrependSection(const char* name,
                                      std::vector<cmDocumentationEntry>& docs)
 {
-  cmDocumentationSection* sec = CM_NULLPTR;
+  cmDocumentationSection* sec = nullptr;
   if (this->AllSections.find(name) == this->AllSections.end()) {
     sec =
       new cmDocumentationSection(name, cmSystemTools::UpperCase(name).c_str());
@@ -430,7 +426,7 @@ void cmDocumentation::PrependSection(const char* name,
 
 void cmDocumentation::AppendSection(const char* name, const char* docs[][2])
 {
-  cmDocumentationSection* sec = CM_NULLPTR;
+  cmDocumentationSection* sec = nullptr;
   if (this->AllSections.find(name) == this->AllSections.end()) {
     sec =
       new cmDocumentationSection(name, cmSystemTools::UpperCase(name).c_str());
@@ -444,7 +440,7 @@ void cmDocumentation::AppendSection(const char* name, const char* docs[][2])
 void cmDocumentation::AppendSection(const char* name,
                                     std::vector<cmDocumentationEntry>& docs)
 {
-  cmDocumentationSection* sec = CM_NULLPTR;
+  cmDocumentationSection* sec = nullptr;
   if (this->AllSections.find(name) == this->AllSections.end()) {
     sec =
       new cmDocumentationSection(name, cmSystemTools::UpperCase(name).c_str());
@@ -489,10 +485,9 @@ void cmDocumentation::PrintNames(std::ostream& os, std::string const& pattern)
   std::vector<std::string> files;
   this->GlobHelp(files, pattern);
   std::vector<std::string> names;
-  for (std::vector<std::string>::const_iterator i = files.begin();
-       i != files.end(); ++i) {
+  for (std::string const& f : files) {
     std::string line;
-    cmsys::ifstream fin(i->c_str());
+    cmsys::ifstream fin(f.c_str());
     while (fin && cmSystemTools::GetLineFromStream(fin, line)) {
       if (!line.empty() && (isalnum(line[0]) || line[0] == '<')) {
         names.push_back(line);
@@ -501,9 +496,8 @@ void cmDocumentation::PrintNames(std::ostream& os, std::string const& pattern)
     }
   }
   std::sort(names.begin(), names.end());
-  for (std::vector<std::string>::iterator i = names.begin(); i != names.end();
-       ++i) {
-    os << *i << "\n";
+  for (std::string const& n : names) {
+    os << n << "\n";
   }
 }
 
@@ -514,9 +508,8 @@ bool cmDocumentation::PrintFiles(std::ostream& os, std::string const& pattern)
   this->GlobHelp(files, pattern);
   std::sort(files.begin(), files.end());
   cmRST r(os, cmSystemTools::GetCMakeRoot() + "/Help");
-  for (std::vector<std::string>::const_iterator i = files.begin();
-       i != files.end(); ++i) {
-    found = r.ProcessFile(*i) || found;
+  for (std::string const& f : files) {
+    found = r.ProcessFile(f) || found;
   }
   return found;
 }
@@ -586,15 +579,13 @@ bool cmDocumentation::PrintHelpListModules(std::ostream& os)
   std::vector<std::string> files;
   this->GlobHelp(files, "module/*");
   std::vector<std::string> modules;
-  for (std::vector<std::string>::iterator fi = files.begin();
-       fi != files.end(); ++fi) {
-    std::string module = cmSystemTools::GetFilenameName(*fi);
+  for (std::string const& f : files) {
+    std::string module = cmSystemTools::GetFilenameName(f);
     modules.push_back(module.substr(0, module.size() - 4));
   }
   std::sort(modules.begin(), modules.end());
-  for (std::vector<std::string>::iterator i = modules.begin();
-       i != modules.end(); ++i) {
-    os << *i << "\n";
+  for (std::string const& m : modules) {
+    os << m << "\n";
   }
   return true;
 }
diff --git a/Source/cmDocumentation.h b/Source/cmDocumentation.h
index 2866fef03..c80bed1cd 100644
--- a/Source/cmDocumentation.h
+++ b/Source/cmDocumentation.h
@@ -3,7 +3,7 @@
 #ifndef _cmDocumentation_h
 #define _cmDocumentation_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmDocumentationFormatter.h"
 
@@ -32,7 +32,7 @@ public:
    * help arguments.
    */
   bool CheckOptions(int argc, const char* const* argv,
-                    const char* exitOpt = CM_NULLPTR);
+                    const char* exitOpt = nullptr);
 
   /**
    * Print help requested on the command line.  Call after
diff --git a/Source/cmDocumentationFormatter.cxx b/Source/cmDocumentationFormatter.cxx
index 001826318..6b996e4b0 100644
--- a/Source/cmDocumentationFormatter.cxx
+++ b/Source/cmDocumentationFormatter.cxx
@@ -168,26 +168,25 @@ void cmDocumentationFormatter::PrintSection(
   os << section.GetName() << "\n";
 
   const std::vector<cmDocumentationEntry>& entries = section.GetEntries();
-  for (std::vector<cmDocumentationEntry>::const_iterator op = entries.begin();
-       op != entries.end(); ++op) {
-    if (!op->Name.empty()) {
-      os << "  " << op->Name;
+  for (cmDocumentationEntry const& entry : entries) {
+    if (!entry.Name.empty()) {
+      os << "  " << entry.Name;
       this->TextIndent = "                                 ";
       int align = static_cast<int>(strlen(this->TextIndent)) - 4;
-      for (int i = static_cast<int>(op->Name.size()); i < align; ++i) {
+      for (int i = static_cast<int>(entry.Name.size()); i < align; ++i) {
         os << " ";
       }
-      if (op->Name.size() > strlen(this->TextIndent) - 4) {
+      if (entry.Name.size() > strlen(this->TextIndent) - 4) {
         os << "\n";
         os.write(this->TextIndent, strlen(this->TextIndent) - 2);
       }
       os << "= ";
-      this->PrintColumn(os, op->Brief.c_str());
+      this->PrintColumn(os, entry.Brief.c_str());
       os << "\n";
     } else {
       os << "\n";
       this->TextIndent = "";
-      this->PrintFormatted(os, op->Brief.c_str());
+      this->PrintFormatted(os, entry.Brief.c_str());
     }
   }
   os << "\n";
diff --git a/Source/cmDynamicLoader.cxx b/Source/cmDynamicLoader.cxx
index 7fbe75c7b..7da6ff54b 100644
--- a/Source/cmDynamicLoader.cxx
+++ b/Source/cmDynamicLoader.cxx
@@ -22,7 +22,7 @@ private:
   static cmDynamicLoaderCache* Instance;
 };
 
-cmDynamicLoaderCache* cmDynamicLoaderCache::Instance = CM_NULLPTR;
+cmDynamicLoaderCache* cmDynamicLoaderCache::Instance = nullptr;
 
 cmDynamicLoaderCache::~cmDynamicLoaderCache()
 {
@@ -65,13 +65,11 @@ bool cmDynamicLoaderCache::FlushCache(const char* path)
 
 void cmDynamicLoaderCache::FlushCache()
 {
-  for (std::map<std::string, cmsys::DynamicLoader::LibraryHandle>::iterator
-         it = this->CacheMap.begin();
-       it != this->CacheMap.end(); it++) {
-    cmsys::DynamicLoader::CloseLibrary(it->second);
+  for (auto const& it : this->CacheMap) {
+    cmsys::DynamicLoader::CloseLibrary(it.second);
   }
   delete cmDynamicLoaderCache::Instance;
-  cmDynamicLoaderCache::Instance = CM_NULLPTR;
+  cmDynamicLoaderCache::Instance = nullptr;
 }
 
 cmDynamicLoaderCache* cmDynamicLoaderCache::GetInstance()
diff --git a/Source/cmDynamicLoader.h b/Source/cmDynamicLoader.h
index 7c46dd5d4..61d3b468b 100644
--- a/Source/cmDynamicLoader.h
+++ b/Source/cmDynamicLoader.h
@@ -8,7 +8,7 @@
 #ifndef cmDynamicLoader_h
 #define cmDynamicLoader_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmsys/DynamicLoader.hxx" // IWYU pragma: export
 
diff --git a/Source/cmELF.cxx b/Source/cmELF.cxx
index fc97bf3b3..76374b2f5 100644
--- a/Source/cmELF.cxx
+++ b/Source/cmELF.cxx
@@ -2,10 +2,10 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmELF.h"
 
-#include "cm_auto_ptr.hxx"
 #include "cm_kwiml.h"
 #include "cmsys/FStream.hxx"
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stddef.h>
 #include <utility>
@@ -108,7 +108,7 @@ public:
   };
 
   // Construct and take ownership of the file stream object.
-  cmELFInternal(cmELF* external, CM_AUTO_PTR<cmsys::ifstream>& fin,
+  cmELFInternal(cmELF* external, std::unique_ptr<cmsys::ifstream>& fin,
                 ByteOrderType order)
     : External(external)
     , Stream(*fin.release())
@@ -231,27 +231,27 @@ public:
   typedef typename Types::tagtype tagtype;
 
   // Construct with a stream and byte swap indicator.
-  cmELFInternalImpl(cmELF* external, CM_AUTO_PTR<cmsys::ifstream>& fin,
+  cmELFInternalImpl(cmELF* external, std::unique_ptr<cmsys::ifstream>& fin,
                     ByteOrderType order);
 
   // Return the number of sections as specified by the ELF header.
-  unsigned int GetNumberOfSections() const CM_OVERRIDE
+  unsigned int GetNumberOfSections() const override
   {
     return static_cast<unsigned int>(this->ELFHeader.e_shnum);
   }
 
   // Get the file position of a dynamic section entry.
-  unsigned long GetDynamicEntryPosition(int j) CM_OVERRIDE;
+  unsigned long GetDynamicEntryPosition(int j) override;
 
-  cmELF::DynamicEntryList GetDynamicEntries() CM_OVERRIDE;
-  std::vector<char> EncodeDynamicEntries(const cmELF::DynamicEntryList&)
-    CM_OVERRIDE;
+  cmELF::DynamicEntryList GetDynamicEntries() override;
+  std::vector<char> EncodeDynamicEntries(
+    const cmELF::DynamicEntryList&) override;
 
   // Lookup a string from the dynamic section with the given tag.
-  StringEntry const* GetDynamicSectionString(unsigned int tag) CM_OVERRIDE;
+  StringEntry const* GetDynamicSectionString(unsigned int tag) override;
 
   // Print information about the ELF file.
-  void PrintInfo(std::ostream& os) const CM_OVERRIDE
+  void PrintInfo(std::ostream& os) const override
   {
     os << "ELF " << Types::GetName();
     if (this->ByteOrder == ByteOrderMSB) {
@@ -424,9 +424,8 @@ private:
 };
 
 template <class Types>
-cmELFInternalImpl<Types>::cmELFInternalImpl(cmELF* external,
-                                            CM_AUTO_PTR<cmsys::ifstream>& fin,
-                                            ByteOrderType order)
+cmELFInternalImpl<Types>::cmELFInternalImpl(
+  cmELF* external, std::unique_ptr<cmsys::ifstream>& fin, ByteOrderType order)
   : cmELFInternal(external, fin, order)
 {
   // Read the main header.
@@ -547,10 +546,7 @@ cmELF::DynamicEntryList cmELFInternalImpl<Types>::GetDynamicEntries()
 
   // Copy into public array
   result.reserve(this->DynamicSectionEntries.size());
-  for (typename std::vector<ELF_Dyn>::iterator di =
-         this->DynamicSectionEntries.begin();
-       di != this->DynamicSectionEntries.end(); ++di) {
-    ELF_Dyn& dyn = *di;
+  for (ELF_Dyn& dyn : this->DynamicSectionEntries) {
     result.push_back(
       std::pair<unsigned long, unsigned long>(dyn.d_tag, dyn.d_un.d_val));
   }
@@ -565,12 +561,11 @@ std::vector<char> cmELFInternalImpl<Types>::EncodeDynamicEntries(
   std::vector<char> result;
   result.reserve(sizeof(ELF_Dyn) * entries.size());
 
-  for (cmELF::DynamicEntryList::const_iterator it = entries.begin();
-       it != entries.end(); it++) {
+  for (auto const& entry : entries) {
     // Store the entry in an ELF_Dyn, byteswap it, then serialize to chars
     ELF_Dyn dyn;
-    dyn.d_tag = static_cast<tagtype>(it->first);
-    dyn.d_un.d_val = static_cast<tagtype>(it->second);
+    dyn.d_tag = static_cast<tagtype>(entry.first);
+    dyn.d_un.d_val = static_cast<tagtype>(entry.second);
 
     if (this->NeedSwap) {
       ByteSwap(dyn);
@@ -594,7 +589,7 @@ cmELF::StringEntry const* cmELFInternalImpl<Types>::GetDynamicSectionString(
     if (dssi->second.Position > 0) {
       return &dssi->second;
     }
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Create an entry for this tag.  Assume it is missing until found.
@@ -605,14 +600,14 @@ cmELF::StringEntry const* cmELFInternalImpl<Types>::GetDynamicSectionString(
 
   // Try reading the dynamic section.
   if (!this->LoadDynamicSection()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Get the string table referenced by the DYNAMIC section.
   ELF_Shdr const& sec = this->SectionHeaders[this->DynamicSectionIndex];
   if (sec.sh_link >= this->SectionHeaders.size()) {
     this->SetErrorMessage("Section DYNAMIC has invalid string table index.");
-    return CM_NULLPTR;
+    return nullptr;
   }
   ELF_Shdr const& strtab = this->SectionHeaders[sec.sh_link];
 
@@ -627,7 +622,7 @@ cmELF::StringEntry const* cmELFInternalImpl<Types>::GetDynamicSectionString(
       if (dyn.d_un.d_val >= strtab.sh_size) {
         this->SetErrorMessage("Section DYNAMIC references string beyond "
                               "the end of its string section.");
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       // Seek to the position reported by the entry.
@@ -656,7 +651,7 @@ cmELF::StringEntry const* cmELFInternalImpl<Types>::GetDynamicSectionString(
       if (!this->Stream) {
         this->SetErrorMessage("Dynamic section specifies unreadable RPATH.");
         se.Value = "";
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       // The value has been read successfully.  Report it.
@@ -667,7 +662,7 @@ cmELF::StringEntry const* cmELFInternalImpl<Types>::GetDynamicSectionString(
       return &se;
     }
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 //============================================================================
@@ -683,10 +678,10 @@ const long cmELF::TagMipsRldMapRel = 0;
 #endif
 
 cmELF::cmELF(const char* fname)
-  : Internal(CM_NULLPTR)
+  : Internal(nullptr)
 {
   // Try to open the file.
-  CM_AUTO_PTR<cmsys::ifstream> fin(new cmsys::ifstream(fname));
+  std::unique_ptr<cmsys::ifstream> fin(new cmsys::ifstream(fname));
 
   // Quit now if the file could not be opened.
   if (!fin.get() || !*fin) {
@@ -811,7 +806,7 @@ cmELF::StringEntry const* cmELF::GetSOName()
       this->Internal->GetFileType() == cmELF::FileTypeSharedLibrary) {
     return this->Internal->GetSOName();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmELF::StringEntry const* cmELF::GetRPath()
@@ -821,7 +816,7 @@ cmELF::StringEntry const* cmELF::GetRPath()
        this->Internal->GetFileType() == cmELF::FileTypeSharedLibrary)) {
     return this->Internal->GetRPath();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmELF::StringEntry const* cmELF::GetRunPath()
@@ -831,7 +826,7 @@ cmELF::StringEntry const* cmELF::GetRunPath()
        this->Internal->GetFileType() == cmELF::FileTypeSharedLibrary)) {
     return this->Internal->GetRunPath();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmELF::PrintInfo(std::ostream& os) const
diff --git a/Source/cmELF.h b/Source/cmELF.h
index a6e407fe1..8c1734888 100644
--- a/Source/cmELF.h
+++ b/Source/cmELF.h
@@ -3,7 +3,7 @@
 #ifndef cmELF_h
 #define cmELF_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <string>
@@ -64,7 +64,7 @@ public:
   };
 
   /** Represent entire dynamic section header */
-  typedef std::vector<std::pair<long, unsigned long> > DynamicEntryList;
+  typedef std::vector<std::pair<long, unsigned long>> DynamicEntryList;
 
   /** Get the type of the file opened.  */
   FileType GetFileType() const;
diff --git a/Source/cmEnableLanguageCommand.cxx b/Source/cmEnableLanguageCommand.cxx
index c57b7b15c..ddd26de9e 100644
--- a/Source/cmEnableLanguageCommand.cxx
+++ b/Source/cmEnableLanguageCommand.cxx
@@ -16,12 +16,11 @@ bool cmEnableLanguageCommand::InitialPass(std::vector<std::string> const& args,
     this->SetError("called with incorrect number of arguments");
     return false;
   }
-  for (std::vector<std::string>::const_iterator it = args.begin();
-       it != args.end(); ++it) {
-    if ((*it) == "OPTIONAL") {
+  for (std::string const& it : args) {
+    if (it == "OPTIONAL") {
       optional = true;
     } else {
-      languages.push_back(*it);
+      languages.push_back(it);
     }
   }
 
diff --git a/Source/cmEnableLanguageCommand.h b/Source/cmEnableLanguageCommand.h
index 33c1c22bf..97645a98c 100644
--- a/Source/cmEnableLanguageCommand.h
+++ b/Source/cmEnableLanguageCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmEnableLanguageCommand_h
 #define cmEnableLanguageCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -26,14 +26,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmEnableLanguageCommand; }
+  cmCommand* Clone() override { return new cmEnableLanguageCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmEnableTestingCommand.h b/Source/cmEnableTestingCommand.h
index e24966221..88a17b9bf 100644
--- a/Source/cmEnableTestingCommand.h
+++ b/Source/cmEnableTestingCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmEnableTestingCommand_h
 #define cmEnableTestingCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -31,14 +31,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmEnableTestingCommand; }
+  cmCommand* Clone() override { return new cmEnableTestingCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const&,
-                   cmExecutionStatus&) CM_OVERRIDE;
+                   cmExecutionStatus&) override;
 };
 
 #endif
diff --git a/Source/cmExecProgramCommand.cxx b/Source/cmExecProgramCommand.cxx
index fcc3c45c6..88e085d5d 100644
--- a/Source/cmExecProgramCommand.cxx
+++ b/Source/cmExecProgramCommand.cxx
@@ -26,8 +26,8 @@ bool cmExecProgramCommand::InitialPass(std::vector<std::string> const& args,
   bool haveoutput_variable = false;
   std::string return_variable;
   bool havereturn_variable = false;
-  for (size_t i = 0; i < args.size(); ++i) {
-    if (args[i] == "OUTPUT_VARIABLE") {
+  for (std::string const& arg : args) {
+    if (arg == "OUTPUT_VARIABLE") {
       count++;
       doingargs = false;
       havereturn_variable = false;
@@ -37,10 +37,10 @@ bool cmExecProgramCommand::InitialPass(std::vector<std::string> const& args,
         this->SetError("called with incorrect number of arguments");
         return false;
       }
-      output_variable = args[i];
+      output_variable = arg;
       haveoutput_variable = false;
       count++;
-    } else if (args[i] == "RETURN_VALUE") {
+    } else if (arg == "RETURN_VALUE") {
       count++;
       doingargs = false;
       haveoutput_variable = false;
@@ -50,16 +50,16 @@ bool cmExecProgramCommand::InitialPass(std::vector<std::string> const& args,
         this->SetError("called with incorrect number of arguments");
         return false;
       }
-      return_variable = args[i];
+      return_variable = arg;
       havereturn_variable = false;
       count++;
-    } else if (args[i] == "ARGS") {
+    } else if (arg == "ARGS") {
       count++;
       havereturn_variable = false;
       haveoutput_variable = false;
       doingargs = true;
     } else if (doingargs) {
-      arguments += args[i];
+      arguments += arg;
       arguments += " ";
       count++;
     }
@@ -86,7 +86,7 @@ bool cmExecProgramCommand::InitialPass(std::vector<std::string> const& args,
                                               args[1].c_str(), verbose);
   } else {
     result = cmExecProgramCommand::RunCommand(command.c_str(), output, retVal,
-                                              CM_NULLPTR, verbose);
+                                              nullptr, verbose);
   }
   if (!result) {
     retVal = -1;
@@ -205,7 +205,7 @@ bool cmExecProgramCommand::RunCommand(const char* command, std::string& output,
   }
   fflush(stdout);
   fflush(stderr);
-  const char* cmd[] = { "/bin/sh", "-c", command, CM_NULLPTR };
+  const char* cmd[] = { "/bin/sh", "-c", command, nullptr };
   cmsysProcess_SetCommand(cp, cmd);
 #endif
 
@@ -217,7 +217,7 @@ bool cmExecProgramCommand::RunCommand(const char* command, std::string& output,
   int p;
   cmProcessOutput processOutput(encoding);
   std::string strdata;
-  while ((p = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR), p)) {
+  while ((p = cmsysProcess_WaitForData(cp, &data, &length, nullptr), p)) {
     if (p == cmsysProcess_Pipe_STDOUT || p == cmsysProcess_Pipe_STDERR) {
       if (verbose) {
         processOutput.DecodeText(data, length, strdata);
@@ -235,7 +235,7 @@ bool cmExecProgramCommand::RunCommand(const char* command, std::string& output,
   }
 
   // All output has been read.  Wait for the process to exit.
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
   processOutput.DecodeText(output, output);
 
   // Check the result of running the process.
diff --git a/Source/cmExecProgramCommand.h b/Source/cmExecProgramCommand.h
index 6463c4db5..dc5da740d 100644
--- a/Source/cmExecProgramCommand.h
+++ b/Source/cmExecProgramCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmExecProgramCommand_h
 #define cmExecProgramCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -27,19 +27,18 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmExecProgramCommand; }
+  cmCommand* Clone() override { return new cmExecProgramCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   static bool RunCommand(const char* command, std::string& output, int& retVal,
-                         const char* directory = CM_NULLPTR,
-                         bool verbose = true,
+                         const char* directory = nullptr, bool verbose = true,
                          Encoding encoding = cmProcessOutput::Auto);
 };
 
diff --git a/Source/cmExecuteProcessCommand.cxx b/Source/cmExecuteProcessCommand.cxx
index 8c10dbe29..39e774e83 100644
--- a/Source/cmExecuteProcessCommand.cxx
+++ b/Source/cmExecuteProcessCommand.cxx
@@ -7,6 +7,7 @@
 #include <sstream>
 #include <stdio.h>
 
+#include "cmAlgorithms.h"
 #include "cmMakefile.h"
 #include "cmProcessOutput.h"
 #include "cmSystemTools.h"
@@ -15,7 +16,7 @@ class cmExecutionStatus;
 
 static bool cmExecuteProcessCommandIsWhitespace(char c)
 {
-  return (isspace((int)c) || c == '\n' || c == '\r');
+  return (isspace(static_cast<int>(c)) || c == '\n' || c == '\r');
 }
 
 void cmExecuteProcessCommandFixText(std::vector<char>& output,
@@ -31,7 +32,7 @@ bool cmExecuteProcessCommand::InitialPass(std::vector<std::string> const& args,
     this->SetError("called with incorrect number of arguments");
     return false;
   }
-  std::vector<std::vector<const char*> > cmds;
+  std::vector<std::vector<const char*>> cmds;
   std::string arguments;
   bool doing_command = false;
   size_t command_index = 0;
@@ -46,6 +47,7 @@ bool cmExecuteProcessCommand::InitialPass(std::vector<std::string> const& args,
   std::string output_variable;
   std::string error_variable;
   std::string result_variable;
+  std::string results_variable;
   std::string working_directory;
   cmProcessOutput::Encoding encoding = cmProcessOutput::None;
   for (size_t i = 0; i < args.size(); ++i) {
@@ -77,6 +79,14 @@ bool cmExecuteProcessCommand::InitialPass(std::vector<std::string> const& args,
         this->SetError(" called with no value for RESULT_VARIABLE.");
         return false;
       }
+    } else if (args[i] == "RESULTS_VARIABLE") {
+      doing_command = false;
+      if (++i < args.size()) {
+        results_variable = args[i];
+      } else {
+        this->SetError(" called with no value for RESULTS_VARIABLE.");
+        return false;
+      }
     } else if (args[i] == "WORKING_DIRECTORY") {
       doing_command = false;
       if (++i < args.size()) {
@@ -160,13 +170,13 @@ bool cmExecuteProcessCommand::InitialPass(std::vector<std::string> const& args,
     this->SetError(" called with no COMMAND argument.");
     return false;
   }
-  for (unsigned int i = 0; i < cmds.size(); ++i) {
-    if (cmds[i].empty()) {
+  for (auto& cmd : cmds) {
+    if (cmd.empty()) {
       this->SetError(" given COMMAND argument with no value.");
       return false;
     }
     // Add the null terminating pointer to the command argument list.
-    cmds[i].push_back(CM_NULLPTR);
+    cmd.push_back(nullptr);
   }
 
   // Parse the timeout string.
@@ -182,8 +192,8 @@ bool cmExecuteProcessCommand::InitialPass(std::vector<std::string> const& args,
   cmsysProcess* cp = cmsysProcess_New();
 
   // Set the command sequence.
-  for (unsigned int i = 0; i < cmds.size(); ++i) {
-    cmsysProcess_AddCommand(cp, &*cmds[i].begin());
+  for (auto const& cmd : cmds) {
+    cmsysProcess_AddCommand(cp, &*cmd.begin());
   }
 
   // Set the process working directory.
@@ -234,7 +244,7 @@ bool cmExecuteProcessCommand::InitialPass(std::vector<std::string> const& args,
   int p;
   cmProcessOutput processOutput(encoding);
   std::string strdata;
-  while ((p = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR), p)) {
+  while ((p = cmsysProcess_WaitForData(cp, &data, &length, nullptr), p)) {
     // Put the output in the right place.
     if (p == cmsysProcess_Pipe_STDOUT && !output_quiet) {
       if (output_variable.empty()) {
@@ -266,7 +276,7 @@ bool cmExecuteProcessCommand::InitialPass(std::vector<std::string> const& args,
   }
 
   // All output has been read.  Wait for the process to exit.
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
   processOutput.DecodeText(tempOutput, tempOutput);
   processOutput.DecodeText(tempError, tempError);
 
@@ -287,7 +297,7 @@ bool cmExecuteProcessCommand::InitialPass(std::vector<std::string> const& args,
     switch (cmsysProcess_GetState(cp)) {
       case cmsysProcess_State_Exited: {
         int v = cmsysProcess_GetExitValue(cp);
-        char buf[100];
+        char buf[16];
         sprintf(buf, "%d", v);
         this->Makefile->AddDefinition(result_variable, buf);
       } break;
@@ -305,6 +315,47 @@ bool cmExecuteProcessCommand::InitialPass(std::vector<std::string> const& args,
         break;
     }
   }
+  // Store the result of running the processes.
+  if (!results_variable.empty()) {
+    switch (cmsysProcess_GetState(cp)) {
+      case cmsysProcess_State_Exited: {
+        std::vector<std::string> res;
+        for (size_t i = 0; i < cmds.size(); ++i) {
+          switch (cmsysProcess_GetStateByIndex(cp, static_cast<int>(i))) {
+            case kwsysProcess_StateByIndex_Exited: {
+              int exitCode =
+                cmsysProcess_GetExitValueByIndex(cp, static_cast<int>(i));
+              char buf[16];
+              sprintf(buf, "%d", exitCode);
+              res.push_back(buf);
+            } break;
+            case kwsysProcess_StateByIndex_Exception:
+              res.push_back(cmsysProcess_GetExceptionStringByIndex(
+                cp, static_cast<int>(i)));
+              break;
+            case kwsysProcess_StateByIndex_Error:
+            default:
+              res.push_back("Error getting the child return code");
+              break;
+          }
+        }
+        this->Makefile->AddDefinition(results_variable,
+                                      cmJoin(res, ";").c_str());
+      } break;
+      case cmsysProcess_State_Exception:
+        this->Makefile->AddDefinition(results_variable,
+                                      cmsysProcess_GetExceptionString(cp));
+        break;
+      case cmsysProcess_State_Error:
+        this->Makefile->AddDefinition(results_variable,
+                                      cmsysProcess_GetErrorString(cp));
+        break;
+      case cmsysProcess_State_Expired:
+        this->Makefile->AddDefinition(results_variable,
+                                      "Process terminated due to timeout");
+        break;
+    }
+  }
 
   // Delete the process instance.
   cmsysProcess_Delete(cp);
diff --git a/Source/cmExecuteProcessCommand.h b/Source/cmExecuteProcessCommand.h
index 08fde0adc..b415deb58 100644
--- a/Source/cmExecuteProcessCommand.h
+++ b/Source/cmExecuteProcessCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmExecuteProcessCommand_h
 #define cmExecuteProcessCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmExecuteProcessCommand; }
+  cmCommand* Clone() override { return new cmExecuteProcessCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmExportBuildAndroidMKGenerator.cxx b/Source/cmExportBuildAndroidMKGenerator.cxx
index b443fb0b4..5e2cd535d 100644
--- a/Source/cmExportBuildAndroidMKGenerator.cxx
+++ b/Source/cmExportBuildAndroidMKGenerator.cxx
@@ -3,7 +3,7 @@
 #include "cmExportBuildAndroidMKGenerator.h"
 
 #include <algorithm>
-#include <map>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <utility>
 
@@ -16,13 +16,12 @@
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
 #include "cmTarget.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmExportBuildAndroidMKGenerator::cmExportBuildAndroidMKGenerator()
 {
-  this->LG = CM_NULLPTR;
-  this->ExportSet = CM_NULLPTR;
+  this->LG = nullptr;
+  this->ExportSet = nullptr;
 }
 
 void cmExportBuildAndroidMKGenerator::GenerateImportHeaderCode(
@@ -98,43 +97,41 @@ void cmExportBuildAndroidMKGenerator::GenerateInterfaceProperties(
   }
   if (!properties.empty()) {
     os << "LOCAL_CPP_FEATURES := rtti exceptions\n";
-    for (ImportPropertyMap::const_iterator pi = properties.begin();
-         pi != properties.end(); ++pi) {
-      if (pi->first == "INTERFACE_COMPILE_OPTIONS") {
+    for (auto const& property : properties) {
+      if (property.first == "INTERFACE_COMPILE_OPTIONS") {
         os << "LOCAL_CPP_FEATURES += ";
-        os << (pi->second) << "\n";
-      } else if (pi->first == "INTERFACE_LINK_LIBRARIES") {
+        os << (property.second) << "\n";
+      } else if (property.first == "INTERFACE_LINK_LIBRARIES") {
         // need to look at list in pi->second and see if static or shared
         // FindTargetToLink
         // target->GetLocalGenerator()->FindGeneratorTargetToUse()
         // then add to LOCAL_CPPFLAGS
         std::vector<std::string> libraries;
-        cmSystemTools::ExpandListArgument(pi->second, libraries);
+        cmSystemTools::ExpandListArgument(property.second, libraries);
         std::string staticLibs;
         std::string sharedLibs;
         std::string ldlibs;
-        for (std::vector<std::string>::iterator i = libraries.begin();
-             i != libraries.end(); ++i) {
+        for (std::string const& lib : libraries) {
           cmGeneratorTarget* gt =
-            target->GetLocalGenerator()->FindGeneratorTargetToUse(*i);
+            target->GetLocalGenerator()->FindGeneratorTargetToUse(lib);
           if (gt) {
 
             if (gt->GetType() == cmStateEnums::SHARED_LIBRARY ||
                 gt->GetType() == cmStateEnums::MODULE_LIBRARY) {
-              sharedLibs += " " + *i;
+              sharedLibs += " " + lib;
             } else {
-              staticLibs += " " + *i;
+              staticLibs += " " + lib;
             }
           } else {
             // evaluate any generator expressions with the current
             // build type of the makefile
             cmGeneratorExpression ge;
-            CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(*i);
+            std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(lib);
             std::string evaluated =
               cge->Evaluate(target->GetLocalGenerator(), config);
             bool relpath = false;
             if (type == cmExportBuildAndroidMKGenerator::INSTALL) {
-              relpath = i->substr(0, 3) == "../";
+              relpath = lib.substr(0, 3) == "../";
             }
             // check for full path or if it already has a -l, or
             // in the case of an install check for relative paths
@@ -157,20 +154,19 @@ void cmExportBuildAndroidMKGenerator::GenerateInterfaceProperties(
         if (!ldlibs.empty()) {
           os << "LOCAL_EXPORT_LDLIBS :=" << ldlibs << "\n";
         }
-      } else if (pi->first == "INTERFACE_INCLUDE_DIRECTORIES") {
-        std::string includes = pi->second;
+      } else if (property.first == "INTERFACE_INCLUDE_DIRECTORIES") {
+        std::string includes = property.second;
         std::vector<std::string> includeList;
         cmSystemTools::ExpandListArgument(includes, includeList);
         os << "LOCAL_EXPORT_C_INCLUDES := ";
         std::string end;
-        for (std::vector<std::string>::iterator i = includeList.begin();
-             i != includeList.end(); ++i) {
-          os << end << *i;
+        for (std::string const& i : includeList) {
+          os << end << i;
           end = "\\\n";
         }
         os << "\n";
       } else {
-        os << "# " << pi->first << " " << (pi->second) << "\n";
+        os << "# " << property.first << " " << (property.second) << "\n";
       }
     }
   }
diff --git a/Source/cmExportBuildAndroidMKGenerator.h b/Source/cmExportBuildAndroidMKGenerator.h
index d028ef48d..c80839bd4 100644
--- a/Source/cmExportBuildAndroidMKGenerator.h
+++ b/Source/cmExportBuildAndroidMKGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmExportBuildAndroidMKGenerator_h
 #define cmExportBuildAndroidMKGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <string>
@@ -42,25 +42,24 @@ public:
 
 protected:
   // Implement virtual methods from the superclass.
-  void GeneratePolicyHeaderCode(std::ostream&) CM_OVERRIDE {}
-  void GeneratePolicyFooterCode(std::ostream&) CM_OVERRIDE {}
+  void GeneratePolicyHeaderCode(std::ostream&) override {}
+  void GeneratePolicyFooterCode(std::ostream&) override {}
   void GenerateImportHeaderCode(std::ostream& os,
-                                const std::string& config = "") CM_OVERRIDE;
-  void GenerateImportFooterCode(std::ostream& os) CM_OVERRIDE;
+                                const std::string& config = "") override;
+  void GenerateImportFooterCode(std::ostream& os) override;
   void GenerateImportTargetCode(std::ostream& os,
-                                const cmGeneratorTarget* target) CM_OVERRIDE;
+                                const cmGeneratorTarget* target) override;
   void GenerateExpectedTargetsCode(
-    std::ostream& os, const std::string& expectedTargets) CM_OVERRIDE;
-  void GenerateImportPropertyCode(std::ostream& os, const std::string& config,
-                                  cmGeneratorTarget const* target,
-                                  ImportPropertyMap const& properties)
-    CM_OVERRIDE;
+    std::ostream& os, const std::string& expectedTargets) override;
+  void GenerateImportPropertyCode(
+    std::ostream& os, const std::string& config,
+    cmGeneratorTarget const* target,
+    ImportPropertyMap const& properties) override;
   void GenerateMissingTargetsCheckCode(
-    std::ostream& os,
-    const std::vector<std::string>& missingTargets) CM_OVERRIDE;
+    std::ostream& os, const std::vector<std::string>& missingTargets) override;
   void GenerateInterfaceProperties(
     cmGeneratorTarget const* target, std::ostream& os,
-    const ImportPropertyMap& properties) CM_OVERRIDE;
+    const ImportPropertyMap& properties) override;
 };
 
 #endif
diff --git a/Source/cmExportBuildFileGenerator.cxx b/Source/cmExportBuildFileGenerator.cxx
index a1c424aca..bb1dda329 100644
--- a/Source/cmExportBuildFileGenerator.cxx
+++ b/Source/cmExportBuildFileGenerator.cxx
@@ -26,8 +26,8 @@ class cmSourceFile;
 
 cmExportBuildFileGenerator::cmExportBuildFileGenerator()
 {
-  this->LG = CM_NULLPTR;
-  this->ExportSet = CM_NULLPTR;
+  this->LG = nullptr;
+  this->ExportSet = nullptr;
 }
 
 void cmExportBuildFileGenerator::Compute(cmLocalGenerator* lg)
@@ -45,9 +45,8 @@ bool cmExportBuildFileGenerator::GenerateMainFile(std::ostream& os)
     std::string sep;
     std::vector<std::string> targets;
     this->GetTargets(targets);
-    for (std::vector<std::string>::const_iterator tei = targets.begin();
-         tei != targets.end(); ++tei) {
-      cmGeneratorTarget* te = this->LG->FindGeneratorTargetToUse(*tei);
+    for (std::string const& tei : targets) {
+      cmGeneratorTarget* te = this->LG->FindGeneratorTargetToUse(tei);
       expectedTargets += sep + this->Namespace + te->GetExportName();
       sep = " ";
       if (this->ExportedTargets.insert(te).second) {
@@ -71,10 +70,7 @@ bool cmExportBuildFileGenerator::GenerateMainFile(std::ostream& os)
   std::vector<std::string> missingTargets;
 
   // Create all the imported targets.
-  for (std::vector<cmGeneratorTarget*>::const_iterator tei =
-         this->Exports.begin();
-       tei != this->Exports.end(); ++tei) {
-    cmGeneratorTarget* gte = *tei;
+  for (cmGeneratorTarget* gte : this->Exports) {
     this->GenerateImportTargetCode(os, gte);
 
     gte->Target->AppendBuildInterfaceIncludes();
@@ -115,10 +111,8 @@ bool cmExportBuildFileGenerator::GenerateMainFile(std::ostream& os)
   }
 
   // Generate import file content for each configuration.
-  for (std::vector<std::string>::const_iterator ci =
-         this->Configurations.begin();
-       ci != this->Configurations.end(); ++ci) {
-    this->GenerateImportConfig(os, *ci, missingTargets);
+  for (std::string const& c : this->Configurations) {
+    this->GenerateImportConfig(os, c, missingTargets);
   }
 
   this->GenerateMissingTargetsCheckCode(os, missingTargets);
@@ -130,11 +124,8 @@ void cmExportBuildFileGenerator::GenerateImportTargetsConfig(
   std::ostream& os, const std::string& config, std::string const& suffix,
   std::vector<std::string>& missingTargets)
 {
-  for (std::vector<cmGeneratorTarget*>::const_iterator tei =
-         this->Exports.begin();
-       tei != this->Exports.end(); ++tei) {
+  for (cmGeneratorTarget* target : this->Exports) {
     // Collect import properties for this target.
-    cmGeneratorTarget* target = *tei;
     ImportPropertyMap properties;
 
     if (target->GetType() != cmStateEnums::INTERFACE_LIBRARY) {
@@ -184,10 +175,8 @@ void cmExportBuildFileGenerator::SetImportLocationProperty(
     target->GetObjectSources(objectSources, config);
     std::string const obj_dir = target->GetObjectDirectory(config);
     std::vector<std::string> objects;
-    for (std::vector<cmSourceFile const*>::const_iterator si =
-           objectSources.begin();
-         si != objectSources.end(); ++si) {
-      const std::string& obj = target->GetObjectName(*si);
+    for (cmSourceFile const* sf : objectSources) {
+      const std::string& obj = target->GetObjectName(sf);
       objects.push_back(obj_dir + obj);
     }
 
@@ -233,7 +222,7 @@ void cmExportBuildFileGenerator::HandleMissingTarget(
       dependee->GetLocalGenerator()->GetGlobalGenerator();
     std::vector<std::string> namespaces = this->FindNamespaces(gg, name);
 
-    int targetOccurrences = (int)namespaces.size();
+    int targetOccurrences = static_cast<int>(namespaces.size());
     if (targetOccurrences == 1) {
       std::string missingTarget = namespaces[0];
 
@@ -256,10 +245,8 @@ void cmExportBuildFileGenerator::GetTargets(
   std::vector<std::string>& targets) const
 {
   if (this->ExportSet) {
-    for (std::vector<cmTargetExport*>::const_iterator tei =
-           this->ExportSet->GetTargetExports()->begin();
-         tei != this->ExportSet->GetTargetExports()->end(); ++tei) {
-      targets.push_back((*tei)->TargetName);
+    for (cmTargetExport* te : *this->ExportSet->GetTargetExports()) {
+      targets.push_back(te->TargetName);
     }
     return;
   }
@@ -274,10 +261,8 @@ std::vector<std::string> cmExportBuildFileGenerator::FindNamespaces(
   std::map<std::string, cmExportBuildFileGenerator*>& exportSets =
     gg->GetBuildExportSets();
 
-  for (std::map<std::string, cmExportBuildFileGenerator*>::const_iterator
-         expIt = exportSets.begin();
-       expIt != exportSets.end(); ++expIt) {
-    const cmExportBuildFileGenerator* exportSet = expIt->second;
+  for (auto const& exp : exportSets) {
+    const cmExportBuildFileGenerator* exportSet = exp.second;
     std::vector<std::string> targets;
     exportSet->GetTargets(targets);
     if (std::find(targets.begin(), targets.end(), name) != targets.end()) {
diff --git a/Source/cmExportBuildFileGenerator.h b/Source/cmExportBuildFileGenerator.h
index 0556983ac..6457a7787 100644
--- a/Source/cmExportBuildFileGenerator.h
+++ b/Source/cmExportBuildFileGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmExportBuildFileGenerator_h
 #define cmExportBuildFileGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmExportFileGenerator.h"
 
@@ -49,14 +49,14 @@ public:
 
 protected:
   // Implement virtual methods from the superclass.
-  bool GenerateMainFile(std::ostream& os) CM_OVERRIDE;
+  bool GenerateMainFile(std::ostream& os) override;
   void GenerateImportTargetsConfig(
     std::ostream& os, const std::string& config, std::string const& suffix,
-    std::vector<std::string>& missingTargets) CM_OVERRIDE;
+    std::vector<std::string>& missingTargets) override;
   void HandleMissingTarget(std::string& link_libs,
                            std::vector<std::string>& missingTargets,
                            cmGeneratorTarget* depender,
-                           cmGeneratorTarget* dependee) CM_OVERRIDE;
+                           cmGeneratorTarget* dependee) override;
 
   void ComplainAboutMissingTarget(cmGeneratorTarget* depender,
                                   cmGeneratorTarget* dependee,
@@ -69,7 +69,7 @@ protected:
                                  ImportPropertyMap& properties);
 
   std::string InstallNameDir(cmGeneratorTarget* target,
-                             const std::string& config) CM_OVERRIDE;
+                             const std::string& config) override;
 
   std::vector<std::string> FindNamespaces(cmGlobalGenerator* gg,
                                           const std::string& name);
diff --git a/Source/cmExportCommand.cxx b/Source/cmExportCommand.cxx
index 38cd511ea..991312983 100644
--- a/Source/cmExportCommand.cxx
+++ b/Source/cmExportCommand.cxx
@@ -35,7 +35,7 @@ cmExportCommand::cmExportCommand()
   , ExportOld(&Helper, "EXPORT_LINK_INTERFACE_LIBRARIES", &ArgumentGroup)
   , AndroidMKFile(&Helper, "ANDROID_MK")
 {
-  this->ExportSet = CM_NULLPTR;
+  this->ExportSet = nullptr;
 }
 
 // cmExportCommand
@@ -51,10 +51,10 @@ bool cmExportCommand::InitialPass(std::vector<std::string> const& args,
     return this->HandlePackage(args);
   }
   if (args[0] == "EXPORT") {
-    this->ExportSetName.Follows(CM_NULLPTR);
+    this->ExportSetName.Follows(nullptr);
     this->ArgumentGroup.Follows(&this->ExportSetName);
   } else {
-    this->Targets.Follows(CM_NULLPTR);
+    this->Targets.Follows(nullptr);
     this->ArgumentGroup.Follows(&this->Targets);
   }
 
@@ -136,42 +136,40 @@ bool cmExportCommand::InitialPass(std::vector<std::string> const& args,
     }
     this->ExportSet = setMap[setName];
   } else if (this->Targets.WasFound()) {
-    for (std::vector<std::string>::const_iterator currentTarget =
-           this->Targets.GetVector().begin();
-         currentTarget != this->Targets.GetVector().end(); ++currentTarget) {
-      if (this->Makefile->IsAlias(*currentTarget)) {
+    for (std::string const& currentTarget : this->Targets.GetVector()) {
+      if (this->Makefile->IsAlias(currentTarget)) {
         std::ostringstream e;
-        e << "given ALIAS target \"" << *currentTarget
+        e << "given ALIAS target \"" << currentTarget
           << "\" which may not be exported.";
         this->SetError(e.str());
         return false;
       }
 
-      if (cmTarget* target = gg->FindTarget(*currentTarget)) {
+      if (cmTarget* target = gg->FindTarget(currentTarget)) {
         if (target->GetType() == cmStateEnums::OBJECT_LIBRARY) {
           std::string reason;
           if (!this->Makefile->GetGlobalGenerator()
                  ->HasKnownObjectFileLocation(&reason)) {
             std::ostringstream e;
-            e << "given OBJECT library \"" << *currentTarget
+            e << "given OBJECT library \"" << currentTarget
               << "\" which may not be exported" << reason << ".";
             this->SetError(e.str());
             return false;
           }
         }
         if (target->GetType() == cmStateEnums::UTILITY) {
-          this->SetError("given custom target \"" + *currentTarget +
+          this->SetError("given custom target \"" + currentTarget +
                          "\" which may not be exported.");
           return false;
         }
       } else {
         std::ostringstream e;
-        e << "given target \"" << *currentTarget
+        e << "given target \"" << currentTarget
           << "\" which is not built by this project.";
         this->SetError(e.str());
         return false;
       }
-      targets.push_back(*currentTarget);
+      targets.push_back(currentTarget);
     }
     if (this->Append.IsEnabled()) {
       if (cmExportBuildFileGenerator* ebfg =
@@ -186,7 +184,7 @@ bool cmExportCommand::InitialPass(std::vector<std::string> const& args,
   }
 
   // Setup export file generation.
-  cmExportBuildFileGenerator* ebfg = CM_NULLPTR;
+  cmExportBuildFileGenerator* ebfg = nullptr;
   if (android) {
     ebfg = new cmExportBuildAndroidMKGenerator;
   } else {
@@ -209,10 +207,8 @@ bool cmExportCommand::InitialPass(std::vector<std::string> const& args,
   if (configurationTypes.empty()) {
     configurationTypes.push_back("");
   }
-  for (std::vector<std::string>::const_iterator ci =
-         configurationTypes.begin();
-       ci != configurationTypes.end(); ++ci) {
-    ebfg->AddConfiguration(*ci);
+  for (std::string const& ct : configurationTypes) {
+    ebfg->AddConfiguration(ct);
   }
   if (this->ExportSet) {
     gg->AddBuildExportExportSet(ebfg);
diff --git a/Source/cmExportCommand.h b/Source/cmExportCommand.h
index c47bc42b9..a5c6751bf 100644
--- a/Source/cmExportCommand.h
+++ b/Source/cmExportCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmExportCommand_h
 #define cmExportCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -27,14 +27,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmExportCommand; }
+  cmCommand* Clone() override { return new cmExportCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   cmCommandArgumentsHelper Helper;
diff --git a/Source/cmExportFileGenerator.cxx b/Source/cmExportFileGenerator.cxx
index 972f4b9d1..7f0cb9729 100644
--- a/Source/cmExportFileGenerator.cxx
+++ b/Source/cmExportFileGenerator.cxx
@@ -17,9 +17,9 @@
 #include "cmTargetExport.h"
 #include "cmake.h"
 
-#include "cm_auto_ptr.hxx"
 #include "cmsys/FStream.hxx"
 #include <assert.h>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <string.h>
 #include <utility>
@@ -65,18 +65,17 @@ const char* cmExportFileGenerator::GetMainExportFileName() const
 bool cmExportFileGenerator::GenerateImportFile()
 {
   // Open the output file to generate it.
-  CM_AUTO_PTR<cmsys::ofstream> foutPtr;
+  std::unique_ptr<cmsys::ofstream> foutPtr;
   if (this->AppendMode) {
     // Open for append.
-    CM_AUTO_PTR<cmsys::ofstream> ap(
-      new cmsys::ofstream(this->MainImportFile.c_str(), std::ios::app));
-    foutPtr = ap;
+    foutPtr = cm::make_unique<cmsys::ofstream>(this->MainImportFile.c_str(),
+                                               std::ios::app);
   } else {
     // Generate atomically and with copy-if-different.
-    CM_AUTO_PTR<cmGeneratedFileStream> ap(
+    std::unique_ptr<cmGeneratedFileStream> ap(
       new cmGeneratedFileStream(this->MainImportFile.c_str(), true));
     ap->SetCopyIfDifferent(true);
-    foutPtr = ap;
+    foutPtr = std::move(ap);
   }
   if (!foutPtr.get() || !*foutPtr) {
     std::string se = cmSystemTools::GetLastSystemError();
@@ -137,7 +136,7 @@ void cmExportFileGenerator::PopulateInterfaceProperty(
   if (input) {
     if (!*input) {
       // Set to empty
-      properties[outputName] = "";
+      properties[outputName].clear();
       return;
     }
 
@@ -206,9 +205,8 @@ static bool checkInterfaceDirs(const std::string& prepro,
 
   bool hadFatalError = false;
 
-  for (std::vector<std::string>::iterator li = parts.begin();
-       li != parts.end(); ++li) {
-    size_t genexPos = cmGeneratorExpression::Find(*li);
+  for (std::string const& li : parts) {
+    size_t genexPos = cmGeneratorExpression::Find(li);
     if (genexPos == 0) {
       continue;
     }
@@ -233,20 +231,20 @@ static bool checkInterfaceDirs(const std::string& prepro,
         hadFatalError = true;
       }
     }
-    if (cmHasLiteralPrefix(li->c_str(), "${_IMPORT_PREFIX}")) {
+    if (cmHasLiteralPrefix(li.c_str(), "${_IMPORT_PREFIX}")) {
       continue;
     }
-    if (!cmSystemTools::FileIsFullPath(li->c_str())) {
+    if (!cmSystemTools::FileIsFullPath(li.c_str())) {
       /* clang-format off */
       e << "Target \"" << target->GetName() << "\" " << prop <<
            " property contains relative path:\n"
-           "  \"" << *li << "\"";
+           "  \"" << li << "\"";
       /* clang-format on */
       target->GetLocalGenerator()->IssueMessage(messageType, e.str());
     }
-    bool inBinary = isSubDirectory(li->c_str(), topBinaryDir);
-    bool inSource = isSubDirectory(li->c_str(), topSourceDir);
-    if (isSubDirectory(li->c_str(), installDir)) {
+    bool inBinary = isSubDirectory(li.c_str(), topBinaryDir);
+    bool inSource = isSubDirectory(li.c_str(), topSourceDir);
+    if (isSubDirectory(li.c_str(), installDir)) {
       // The include directory is inside the install tree.  If the
       // install tree is not inside the source tree or build tree then
       // fall through to the checks below that the include directory is not
@@ -261,7 +259,7 @@ static bool checkInterfaceDirs(const std::string& prepro,
             case cmPolicies::WARN: {
               std::ostringstream s;
               s << cmPolicies::GetPolicyWarning(cmPolicies::CMP0052) << "\n";
-              s << "Directory:\n    \"" << *li
+              s << "Directory:\n    \"" << li
                 << "\"\nin "
                    "INTERFACE_INCLUDE_DIRECTORIES of target \""
                 << target->GetName() << "\" is a subdirectory of the install "
@@ -293,7 +291,7 @@ static bool checkInterfaceDirs(const std::string& prepro,
       /* clang-format off */
       e << "Target \"" << target->GetName() << "\" " << prop <<
            " property contains path:\n"
-           "  \"" << *li << "\"\nwhich is prefixed in the build directory.";
+           "  \"" << li << "\"\nwhich is prefixed in the build directory.";
       /* clang-format on */
       target->GetLocalGenerator()->IssueMessage(messageType, e.str());
     }
@@ -302,7 +300,7 @@ static bool checkInterfaceDirs(const std::string& prepro,
         e << "Target \"" << target->GetName() << "\" " << prop
           << " property contains path:\n"
              "  \""
-          << *li << "\"\nwhich is prefixed in the source directory.";
+          << li << "\"\nwhich is prefixed in the source directory.";
         target->GetLocalGenerator()->IssueMessage(messageType, e.str());
       }
     }
@@ -314,17 +312,16 @@ static void prefixItems(std::string& exportDirs)
 {
   std::vector<std::string> entries;
   cmGeneratorExpression::Split(exportDirs, entries);
-  exportDirs = "";
+  exportDirs.clear();
   const char* sep = "";
-  for (std::vector<std::string>::const_iterator ei = entries.begin();
-       ei != entries.end(); ++ei) {
+  for (std::string const& e : entries) {
     exportDirs += sep;
     sep = ";";
-    if (!cmSystemTools::FileIsFullPath(ei->c_str()) &&
-        ei->find("${_IMPORT_PREFIX}") == std::string::npos) {
+    if (!cmSystemTools::FileIsFullPath(e.c_str()) &&
+        e.find("${_IMPORT_PREFIX}") == std::string::npos) {
       exportDirs += "${_IMPORT_PREFIX}/";
     }
-    exportDirs += *ei;
+    exportDirs += e;
   }
 }
 
@@ -343,7 +340,7 @@ void cmExportFileGenerator::PopulateSourcesInterface(
   }
 
   if (!*input) {
-    properties[propName] = "";
+    properties[propName].clear();
     return;
   }
 
@@ -374,7 +371,7 @@ void cmExportFileGenerator::PopulateIncludeDirectoriesInterface(
   std::string dirs = cmGeneratorExpression::Preprocess(
     tei->InterfaceIncludeDirectories, preprocessRule, true);
   this->ReplaceInstallPrefix(dirs);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(dirs);
+  std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(dirs);
   std::string exportDirs =
     cge->Evaluate(target->GetLocalGenerator(), "", false, target);
 
@@ -396,7 +393,7 @@ void cmExportFileGenerator::PopulateIncludeDirectoriesInterface(
   }
   if ((input && !*input) && exportDirs.empty()) {
     // Set to empty
-    properties[propName] = "";
+    properties[propName].clear();
     return;
   }
 
@@ -461,18 +458,17 @@ void getCompatibleInterfaceProperties(cmGeneratorTarget* target,
 
   const cmComputeLinkInformation::ItemVector& deps = info->GetItems();
 
-  for (cmComputeLinkInformation::ItemVector::const_iterator li = deps.begin();
-       li != deps.end(); ++li) {
-    if (!li->Target) {
+  for (auto const& dep : deps) {
+    if (!dep.Target) {
       continue;
     }
-    getPropertyContents(li->Target, "COMPATIBLE_INTERFACE_BOOL",
+    getPropertyContents(dep.Target, "COMPATIBLE_INTERFACE_BOOL",
                         ifaceProperties);
-    getPropertyContents(li->Target, "COMPATIBLE_INTERFACE_STRING",
+    getPropertyContents(dep.Target, "COMPATIBLE_INTERFACE_STRING",
                         ifaceProperties);
-    getPropertyContents(li->Target, "COMPATIBLE_INTERFACE_NUMBER_MIN",
+    getPropertyContents(dep.Target, "COMPATIBLE_INTERFACE_NUMBER_MIN",
                         ifaceProperties);
-    getPropertyContents(li->Target, "COMPATIBLE_INTERFACE_NUMBER_MAX",
+    getPropertyContents(dep.Target, "COMPATIBLE_INTERFACE_NUMBER_MAX",
                         ifaceProperties);
   }
 }
@@ -504,15 +500,13 @@ void cmExportFileGenerator::PopulateCompatibleInterfaceProperties(
     std::vector<std::string> configNames;
     gtarget->Target->GetMakefile()->GetConfigurations(configNames);
 
-    for (std::vector<std::string>::const_iterator ci = configNames.begin();
-         ci != configNames.end(); ++ci) {
-      getCompatibleInterfaceProperties(gtarget, ifaceProperties, *ci);
+    for (std::string const& cn : configNames) {
+      getCompatibleInterfaceProperties(gtarget, ifaceProperties, cn);
     }
   }
 
-  for (std::set<std::string>::const_iterator it = ifaceProperties.begin();
-       it != ifaceProperties.end(); ++it) {
-    this->PopulateInterfaceProperty("INTERFACE_" + *it, gtarget, properties);
+  for (std::string const& ip : ifaceProperties) {
+    this->PopulateInterfaceProperty("INTERFACE_" + ip, gtarget, properties);
   }
 }
 
@@ -524,10 +518,9 @@ void cmExportFileGenerator::GenerateInterfaceProperties(
     std::string targetName = this->Namespace;
     targetName += target->GetExportName();
     os << "set_target_properties(" << targetName << " PROPERTIES\n";
-    for (ImportPropertyMap::const_iterator pi = properties.begin();
-         pi != properties.end(); ++pi) {
-      os << "  " << pi->first << " " << cmExportFileGeneratorEscape(pi->second)
-         << "\n";
+    for (auto const& property : properties) {
+      os << "  " << property.first << " "
+         << cmExportFileGeneratorEscape(property.second) << "\n";
     }
     os << ")\n\n";
   }
@@ -571,15 +564,14 @@ void cmExportFileGenerator::ResolveTargetsInGeneratorExpressions(
   cmGeneratorExpression::Split(input, parts);
 
   std::string sep;
-  input = "";
-  for (std::vector<std::string>::iterator li = parts.begin();
-       li != parts.end(); ++li) {
-    if (cmGeneratorExpression::Find(*li) == std::string::npos) {
-      this->AddTargetNamespace(*li, target, missingTargets);
+  input.clear();
+  for (std::string& li : parts) {
+    if (cmGeneratorExpression::Find(li) == std::string::npos) {
+      this->AddTargetNamespace(li, target, missingTargets);
     } else {
-      this->ResolveTargetsInGeneratorExpression(*li, target, missingTargets);
+      this->ResolveTargetsInGeneratorExpression(li, target, missingTargets);
     }
-    input += sep + *li;
+    input += sep + li;
     sep = ";";
   }
 }
@@ -720,7 +712,7 @@ void cmExportFileGenerator::SetImportLinkInterface(
   }
 
   if (!*propContent) {
-    properties["IMPORTED_LINK_INTERFACE_LIBRARIES" + suffix] = "";
+    properties["IMPORTED_LINK_INTERFACE_LIBRARIES" + suffix].clear();
     return;
   }
 
@@ -797,13 +789,12 @@ void cmExportFileGenerator::SetImportLinkProperty(
   // Construct the property value.
   std::string link_entries;
   const char* sep = "";
-  for (typename std::vector<T>::const_iterator li = entries.begin();
-       li != entries.end(); ++li) {
+  for (T const& l : entries) {
     // Separate this from the previous entry.
     link_entries += sep;
     sep = ";";
 
-    std::string temp = *li;
+    std::string temp = l;
     this->AddTargetNamespace(temp, target, missingTargets);
     link_entries += temp;
   }
@@ -988,10 +979,9 @@ void cmExportFileGenerator::GenerateImportPropertyCode(
   }
   os << ")\n";
   os << "set_target_properties(" << targetName << " PROPERTIES\n";
-  for (ImportPropertyMap::const_iterator pi = properties.begin();
-       pi != properties.end(); ++pi) {
-    os << "  " << pi->first << " " << cmExportFileGeneratorEscape(pi->second)
-       << "\n";
+  for (auto const& property : properties) {
+    os << "  " << property.first << " "
+       << cmExportFileGeneratorEscape(property.second) << "\n";
   }
   os << "  )\n"
      << "\n";
@@ -1015,9 +1005,9 @@ void cmExportFileGenerator::GenerateMissingTargetsCheckCode(
         "foreach(_target ";
   /* clang-format on */
   std::set<std::string> emitted;
-  for (unsigned int i = 0; i < missingTargets.size(); ++i) {
-    if (emitted.insert(missingTargets[i]).second) {
-      os << "\"" << missingTargets[i] << "\" ";
+  for (std::string const& missingTarget : missingTargets) {
+    if (emitted.insert(missingTarget).second) {
+      os << "\"" << missingTarget << "\" ";
     }
   }
   /* clang-format off */
@@ -1094,9 +1084,8 @@ void cmExportFileGenerator::GenerateImportedFileChecksCode(
         "list(APPEND _IMPORT_CHECK_FILES_FOR_"
      << targetName << " ";
 
-  for (std::set<std::string>::const_iterator li = importedLocations.begin();
-       li != importedLocations.end(); ++li) {
-    ImportPropertyMap::const_iterator pi = properties.find(*li);
+  for (std::string const& li : importedLocations) {
+    ImportPropertyMap::const_iterator pi = properties.find(li);
     if (pi != properties.end()) {
       os << cmExportFileGeneratorEscape(pi->second) << " ";
     }
diff --git a/Source/cmExportInstallAndroidMKGenerator.cxx b/Source/cmExportInstallAndroidMKGenerator.cxx
index 9a1c647d3..fe565e623 100644
--- a/Source/cmExportInstallAndroidMKGenerator.cxx
+++ b/Source/cmExportInstallAndroidMKGenerator.cxx
@@ -34,11 +34,8 @@ void cmExportInstallAndroidMKGenerator::GenerateImportHeaderCode(
   }
   os << "_IMPORT_PREFIX := "
      << "$(LOCAL_PATH)" << path << "\n\n";
-  for (std::vector<cmTargetExport*>::const_iterator tei =
-         this->IEGen->GetExportSet()->GetTargetExports()->begin();
-       tei != this->IEGen->GetExportSet()->GetTargetExports()->end(); ++tei) {
+  for (cmTargetExport* te : *this->IEGen->GetExportSet()->GetTargetExports()) {
     // Collect import properties for this target.
-    cmTargetExport const* te = *tei;
     if (te->Target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
     }
diff --git a/Source/cmExportInstallAndroidMKGenerator.h b/Source/cmExportInstallAndroidMKGenerator.h
index ebef78365..316598290 100644
--- a/Source/cmExportInstallAndroidMKGenerator.h
+++ b/Source/cmExportInstallAndroidMKGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmExportInstallAndroidMKGenerator_h
 #define cmExportInstallAndroidMKGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <set>
@@ -36,37 +36,36 @@ public:
 
 protected:
   // Implement virtual methods from the superclass.
-  void GeneratePolicyHeaderCode(std::ostream&) CM_OVERRIDE {}
-  void GeneratePolicyFooterCode(std::ostream&) CM_OVERRIDE {}
+  void GeneratePolicyHeaderCode(std::ostream&) override {}
+  void GeneratePolicyFooterCode(std::ostream&) override {}
   void GenerateImportHeaderCode(std::ostream& os,
-                                const std::string& config = "") CM_OVERRIDE;
-  void GenerateImportFooterCode(std::ostream& os) CM_OVERRIDE;
+                                const std::string& config = "") override;
+  void GenerateImportFooterCode(std::ostream& os) override;
   void GenerateImportTargetCode(std::ostream& os,
-                                const cmGeneratorTarget* target) CM_OVERRIDE;
+                                const cmGeneratorTarget* target) override;
   void GenerateExpectedTargetsCode(
-    std::ostream& os, const std::string& expectedTargets) CM_OVERRIDE;
-  void GenerateImportPropertyCode(std::ostream& os, const std::string& config,
-                                  cmGeneratorTarget const* target,
-                                  ImportPropertyMap const& properties)
-    CM_OVERRIDE;
+    std::ostream& os, const std::string& expectedTargets) override;
+  void GenerateImportPropertyCode(
+    std::ostream& os, const std::string& config,
+    cmGeneratorTarget const* target,
+    ImportPropertyMap const& properties) override;
   void GenerateMissingTargetsCheckCode(
-    std::ostream& os,
-    const std::vector<std::string>& missingTargets) CM_OVERRIDE;
+    std::ostream& os, const std::vector<std::string>& missingTargets) override;
   void GenerateInterfaceProperties(
     cmGeneratorTarget const* target, std::ostream& os,
-    const ImportPropertyMap& properties) CM_OVERRIDE;
-  void GenerateImportPrefix(std::ostream& os) CM_OVERRIDE;
-  void LoadConfigFiles(std::ostream&) CM_OVERRIDE;
+    const ImportPropertyMap& properties) override;
+  void GenerateImportPrefix(std::ostream& os) override;
+  void LoadConfigFiles(std::ostream&) override;
   void GenerateRequiredCMakeVersion(std::ostream& os,
-                                    const char* versionString) CM_OVERRIDE;
-  void CleanupTemporaryVariables(std::ostream&) CM_OVERRIDE;
-  void GenerateImportedFileCheckLoop(std::ostream& os) CM_OVERRIDE;
+                                    const char* versionString) override;
+  void CleanupTemporaryVariables(std::ostream&) override;
+  void GenerateImportedFileCheckLoop(std::ostream& os) override;
   void GenerateImportedFileChecksCode(
     std::ostream& os, cmGeneratorTarget* target,
     ImportPropertyMap const& properties,
-    const std::set<std::string>& importedLocations) CM_OVERRIDE;
+    const std::set<std::string>& importedLocations) override;
   bool GenerateImportFileConfig(const std::string& config,
-                                std::vector<std::string>&) CM_OVERRIDE;
+                                std::vector<std::string>&) override;
 };
 
 #endif
diff --git a/Source/cmExportInstallFileGenerator.cxx b/Source/cmExportInstallFileGenerator.cxx
index 664a34276..9b65e9e5c 100644
--- a/Source/cmExportInstallFileGenerator.cxx
+++ b/Source/cmExportInstallFileGenerator.cxx
@@ -4,7 +4,6 @@
 
 #include "cmAlgorithms.h"
 #include "cmExportSet.h"
-#include "cmExportSetMap.h"
 #include "cmGeneratedFileStream.h"
 #include "cmGeneratorExpression.h"
 #include "cmGeneratorTarget.h"
@@ -22,6 +21,8 @@
 #include <sstream>
 #include <utility>
 
+class cmExportSetMap;
+
 cmExportInstallFileGenerator::cmExportInstallFileGenerator(
   cmInstallExportGenerator* iegen)
   : IEGen(iegen)
@@ -42,14 +43,10 @@ bool cmExportInstallFileGenerator::GenerateMainFile(std::ostream& os)
   {
     std::string expectedTargets;
     std::string sep;
-    for (std::vector<cmTargetExport*>::const_iterator tei =
-           this->IEGen->GetExportSet()->GetTargetExports()->begin();
-         tei != this->IEGen->GetExportSet()->GetTargetExports()->end();
-         ++tei) {
-      expectedTargets +=
-        sep + this->Namespace + (*tei)->Target->GetExportName();
+    for (cmTargetExport* te :
+         *this->IEGen->GetExportSet()->GetTargetExports()) {
+      expectedTargets += sep + this->Namespace + te->Target->GetExportName();
       sep = " ";
-      cmTargetExport* te = *tei;
       if (this->ExportedTargets.insert(te->Target).second) {
         allTargets.push_back(te);
       } else {
@@ -76,9 +73,8 @@ bool cmExportInstallFileGenerator::GenerateMainFile(std::ostream& os)
   bool require3_1_0 = false;
   bool requiresConfigFiles = false;
   // Create all the imported targets.
-  for (std::vector<cmTargetExport*>::const_iterator tei = allTargets.begin();
-       tei != allTargets.end(); ++tei) {
-    cmGeneratorTarget* gt = (*tei)->Target;
+  for (cmTargetExport* te : allTargets) {
+    cmGeneratorTarget* gt = te->Target;
 
     requiresConfigFiles =
       requiresConfigFiles || gt->GetType() != cmStateEnums::INTERFACE_LIBRARY;
@@ -88,10 +84,8 @@ bool cmExportInstallFileGenerator::GenerateMainFile(std::ostream& os)
     ImportPropertyMap properties;
 
     this->PopulateIncludeDirectoriesInterface(
-      *tei, cmGeneratorExpression::InstallInterface, properties,
-      missingTargets);
-    this->PopulateSourcesInterface(*tei,
-                                   cmGeneratorExpression::InstallInterface,
+      te, cmGeneratorExpression::InstallInterface, properties, missingTargets);
+    this->PopulateSourcesInterface(te, cmGeneratorExpression::InstallInterface,
                                    properties, missingTargets);
     this->PopulateInterfaceProperty("INTERFACE_SYSTEM_INCLUDE_DIRECTORIES", gt,
                                     cmGeneratorExpression::InstallInterface,
@@ -154,10 +148,8 @@ bool cmExportInstallFileGenerator::GenerateMainFile(std::ostream& os)
   // Generate an import file for each configuration.
   // Don't do this if we only export INTERFACE_LIBRARY targets.
   if (requiresConfigFiles) {
-    for (std::vector<std::string>::const_iterator ci =
-           this->Configurations.begin();
-         ci != this->Configurations.end(); ++ci) {
-      if (!this->GenerateImportFileConfig(*ci, missingTargets)) {
+    for (std::string const& c : this->Configurations) {
+      if (!this->GenerateImportFileConfig(c, missingTargets)) {
         result = false;
       }
     }
@@ -314,11 +306,8 @@ void cmExportInstallFileGenerator::GenerateImportTargetsConfig(
   std::vector<std::string>& missingTargets)
 {
   // Add each target in the set to the export.
-  for (std::vector<cmTargetExport*>::const_iterator tei =
-         this->IEGen->GetExportSet()->GetTargetExports()->begin();
-       tei != this->IEGen->GetExportSet()->GetTargetExports()->end(); ++tei) {
+  for (cmTargetExport* te : *this->IEGen->GetExportSet()->GetTargetExports()) {
     // Collect import properties for this target.
-    cmTargetExport const* te = *tei;
     if (te->Target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
     }
@@ -409,9 +398,8 @@ void cmExportInstallFileGenerator::SetImportLocationProperty(
     // IMPORTED_OBJECTS as a list of object files
     std::vector<std::string> objects;
     itgen->GetInstallObjectNames(config, objects);
-    for (std::vector<std::string>::iterator i = objects.begin();
-         i != objects.end(); ++i) {
-      *i = value + *i;
+    for (std::string& obj : objects) {
+      obj = value + obj;
     }
 
     // Store the property.
@@ -445,7 +433,7 @@ void cmExportInstallFileGenerator::HandleMissingTarget(
   const std::string name = dependee->GetName();
   cmGlobalGenerator* gg = dependee->GetLocalGenerator()->GetGlobalGenerator();
   std::vector<std::string> namespaces = this->FindNamespaces(gg, name);
-  int targetOccurrences = (int)namespaces.size();
+  int targetOccurrences = static_cast<int>(namespaces.size());
   if (targetOccurrences == 1) {
     std::string missingTarget = namespaces[0];
 
@@ -465,15 +453,14 @@ std::vector<std::string> cmExportInstallFileGenerator::FindNamespaces(
   std::vector<std::string> namespaces;
   const cmExportSetMap& exportSets = gg->GetExportSets();
 
-  for (cmExportSetMap::const_iterator expIt = exportSets.begin();
-       expIt != exportSets.end(); ++expIt) {
-    const cmExportSet* exportSet = expIt->second;
+  for (auto const& expIt : exportSets) {
+    const cmExportSet* exportSet = expIt.second;
     std::vector<cmTargetExport*> const* targets =
       exportSet->GetTargetExports();
 
     bool containsTarget = false;
-    for (unsigned int i = 0; i < targets->size(); i++) {
-      if (name == (*targets)[i]->TargetName) {
+    for (cmTargetExport* target : *targets) {
+      if (name == target->TargetName) {
         containsTarget = true;
         break;
       }
@@ -482,8 +469,8 @@ std::vector<std::string> cmExportInstallFileGenerator::FindNamespaces(
     if (containsTarget) {
       std::vector<cmInstallExportGenerator const*> const* installs =
         exportSet->GetInstallations();
-      for (unsigned int i = 0; i < installs->size(); i++) {
-        namespaces.push_back((*installs)[i]->GetNamespace());
+      for (cmInstallExportGenerator const* install : *installs) {
+        namespaces.push_back(install->GetNamespace());
       }
     }
   }
diff --git a/Source/cmExportInstallFileGenerator.h b/Source/cmExportInstallFileGenerator.h
index 8fa9b7f88..cda8433a2 100644
--- a/Source/cmExportInstallFileGenerator.h
+++ b/Source/cmExportInstallFileGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmExportInstallFileGenerator_h
 #define cmExportInstallFileGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmExportFileGenerator.h"
 
@@ -53,16 +53,16 @@ public:
 
 protected:
   // Implement virtual methods from the superclass.
-  bool GenerateMainFile(std::ostream& os) CM_OVERRIDE;
+  bool GenerateMainFile(std::ostream& os) override;
   void GenerateImportTargetsConfig(
     std::ostream& os, const std::string& config, std::string const& suffix,
-    std::vector<std::string>& missingTargets) CM_OVERRIDE;
+    std::vector<std::string>& missingTargets) override;
   void HandleMissingTarget(std::string& link_libs,
                            std::vector<std::string>& missingTargets,
                            cmGeneratorTarget* depender,
-                           cmGeneratorTarget* dependee) CM_OVERRIDE;
+                           cmGeneratorTarget* dependee) override;
 
-  void ReplaceInstallPrefix(std::string& input) CM_OVERRIDE;
+  void ReplaceInstallPrefix(std::string& input) override;
 
   void ComplainAboutMissingTarget(cmGeneratorTarget* depender,
                                   cmGeneratorTarget* dependee,
@@ -91,7 +91,7 @@ protected:
                                  std::set<std::string>& importedLocations);
 
   std::string InstallNameDir(cmGeneratorTarget* target,
-                             const std::string& config) CM_OVERRIDE;
+                             const std::string& config) override;
 
   cmInstallExportGenerator* IEGen;
 
diff --git a/Source/cmExportLibraryDependenciesCommand.cxx b/Source/cmExportLibraryDependenciesCommand.cxx
index 69150aee4..50f8cb014 100644
--- a/Source/cmExportLibraryDependenciesCommand.cxx
+++ b/Source/cmExportLibraryDependenciesCommand.cxx
@@ -4,8 +4,10 @@
 
 #include "cmsys/FStream.hxx"
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <utility>
 
+#include "cmAlgorithms.h"
 #include "cmGeneratedFileStream.h"
 #include "cmGlobalGenerator.h"
 #include "cmMakefile.h"
@@ -13,8 +15,6 @@
 #include "cmSystemTools.h"
 #include "cmTarget.h"
 #include "cmTargetLinkLibraryType.h"
-#include "cm_auto_ptr.hxx"
-#include "cm_unordered_map.hxx"
 #include "cmake.h"
 
 class cmExecutionStatus;
@@ -48,16 +48,15 @@ void cmExportLibraryDependenciesCommand::FinalPass()
 void cmExportLibraryDependenciesCommand::ConstFinalPass() const
 {
   // Use copy-if-different if not appending.
-  CM_AUTO_PTR<cmsys::ofstream> foutPtr;
+  std::unique_ptr<cmsys::ofstream> foutPtr;
   if (this->Append) {
-    CM_AUTO_PTR<cmsys::ofstream> ap(
-      new cmsys::ofstream(this->Filename.c_str(), std::ios::app));
-    foutPtr = ap;
+    foutPtr =
+      cm::make_unique<cmsys::ofstream>(this->Filename.c_str(), std::ios::app);
   } else {
-    CM_AUTO_PTR<cmGeneratedFileStream> ap(
+    std::unique_ptr<cmGeneratedFileStream> ap(
       new cmGeneratedFileStream(this->Filename.c_str(), true));
     ap->SetCopyIfDifferent(true);
-    foutPtr = ap;
+    foutPtr = std::move(ap);
   }
   std::ostream& fout = *foutPtr;
 
@@ -75,12 +74,11 @@ void cmExportLibraryDependenciesCommand::ConstFinalPass() const
   std::map<std::string, std::string> libDepsOld;
   std::map<std::string, std::string> libDepsNew;
   std::map<std::string, std::string> libTypes;
-  for (std::vector<cmMakefile*>::const_iterator i = locals.begin();
-       i != locals.end(); ++i) {
-    const cmTargets& tgts = (*i)->GetTargets();
-    for (cmTargets::const_iterator l = tgts.begin(); l != tgts.end(); ++l) {
+  for (cmMakefile* local : locals) {
+    const cmTargets& tgts = local->GetTargets();
+    for (auto const& tgt : tgts) {
       // Get the current target.
-      cmTarget const& target = l->second;
+      cmTarget const& target = tgt.second;
 
       // Skip non-library targets.
       if (target.GetType() < cmStateEnums::STATIC_LIBRARY ||
@@ -98,12 +96,11 @@ void cmExportLibraryDependenciesCommand::ConstFinalPass() const
       std::string valueNew;
       cmTarget::LinkLibraryVectorType const& libs =
         target.GetOriginalLinkLibraries();
-      for (cmTarget::LinkLibraryVectorType::const_iterator li = libs.begin();
-           li != libs.end(); ++li) {
-        std::string ltVar = li->first;
+      for (cmTarget::LibraryID const& li : libs) {
+        std::string ltVar = li.first;
         ltVar += "_LINK_TYPE";
         std::string ltValue;
-        switch (li->second) {
+        switch (li.second) {
           case GENERAL_LibraryType:
             valueNew += "general;";
             ltValue = "general";
@@ -117,7 +114,7 @@ void cmExportLibraryDependenciesCommand::ConstFinalPass() const
             ltValue = "optimized";
             break;
         }
-        std::string lib = li->first;
+        std::string lib = li.first;
         if (cmTarget* libtgt = global->FindTarget(lib)) {
           // Handle simple output name changes.  This command is
           // deprecated so we do not support full target name
@@ -150,26 +147,21 @@ void cmExportLibraryDependenciesCommand::ConstFinalPass() const
   fout << "# Generated by CMake\n\n";
   fout << "if(" << vertest << ")\n";
   fout << "  # Information for CMake 2.6 and above.\n";
-  for (std::map<std::string, std::string>::const_iterator i =
-         libDepsNew.begin();
-       i != libDepsNew.end(); ++i) {
-    if (!i->second.empty()) {
-      fout << "  set(\"" << i->first << "\" \"" << i->second << "\")\n";
+  for (auto const& i : libDepsNew) {
+    if (!i.second.empty()) {
+      fout << "  set(\"" << i.first << "\" \"" << i.second << "\")\n";
     }
   }
   fout << "else()\n";
   fout << "  # Information for CMake 2.4 and lower.\n";
-  for (std::map<std::string, std::string>::const_iterator i =
-         libDepsOld.begin();
-       i != libDepsOld.end(); ++i) {
-    if (!i->second.empty()) {
-      fout << "  set(\"" << i->first << "\" \"" << i->second << "\")\n";
+  for (auto const& i : libDepsOld) {
+    if (!i.second.empty()) {
+      fout << "  set(\"" << i.first << "\" \"" << i.second << "\")\n";
     }
   }
-  for (std::map<std::string, std::string>::const_iterator i = libTypes.begin();
-       i != libTypes.end(); ++i) {
-    if (i->second != "general") {
-      fout << "  set(\"" << i->first << "\" \"" << i->second << "\")\n";
+  for (auto const& i : libTypes) {
+    if (i.second != "general") {
+      fout << "  set(\"" << i.first << "\" \"" << i.second << "\")\n";
     }
   }
   fout << "endif()\n";
diff --git a/Source/cmExportLibraryDependenciesCommand.h b/Source/cmExportLibraryDependenciesCommand.h
index 5559af94b..bf5e9bc54 100644
--- a/Source/cmExportLibraryDependenciesCommand.h
+++ b/Source/cmExportLibraryDependenciesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmExportLibraryDependenciesCommand_h
 #define cmExportLibraryDependenciesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -15,15 +15,15 @@ class cmExecutionStatus;
 class cmExportLibraryDependenciesCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     return new cmExportLibraryDependenciesCommand;
   }
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
-  void FinalPass() CM_OVERRIDE;
-  bool HasFinalPass() const CM_OVERRIDE { return true; }
+  void FinalPass() override;
+  bool HasFinalPass() const override { return true; }
 
 private:
   std::string Filename;
diff --git a/Source/cmExportSet.cxx b/Source/cmExportSet.cxx
index a93667994..a6fa186c7 100644
--- a/Source/cmExportSet.cxx
+++ b/Source/cmExportSet.cxx
@@ -13,9 +13,8 @@ cmExportSet::~cmExportSet()
 
 void cmExportSet::Compute(cmLocalGenerator* lg)
 {
-  for (std::vector<cmTargetExport*>::iterator it = this->TargetExports.begin();
-       it != this->TargetExports.end(); ++it) {
-    (*it)->Target = lg->FindGeneratorTargetToUse((*it)->TargetName);
+  for (cmTargetExport* tgtExport : this->TargetExports) {
+    tgtExport->Target = lg->FindGeneratorTargetToUse(tgtExport->TargetName);
   }
 }
 
diff --git a/Source/cmExportTryCompileFileGenerator.cxx b/Source/cmExportTryCompileFileGenerator.cxx
index cd0a7e69a..1fb9cf818 100644
--- a/Source/cmExportTryCompileFileGenerator.cxx
+++ b/Source/cmExportTryCompileFileGenerator.cxx
@@ -11,9 +11,9 @@
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
 #include "cmTarget.h"
-#include "cm_auto_ptr.hxx"
 
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <utility>
 
 cmExportTryCompileFileGenerator::cmExportTryCompileFileGenerator(
@@ -62,10 +62,10 @@ std::string cmExportTryCompileFileGenerator::FindTargets(
 
   cmGeneratorExpression ge;
 
-  cmGeneratorExpressionDAGChecker dagChecker(tgt->GetName(), propName,
-                                             CM_NULLPTR, CM_NULLPTR);
+  cmGeneratorExpressionDAGChecker dagChecker(tgt->GetName(), propName, nullptr,
+                                             nullptr);
 
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(prop);
+  std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(prop);
 
   cmTarget dummyHead("try_compile_dummy_exe", cmStateEnums::EXECUTABLE,
                      cmTarget::VisibilityNormal, tgt->Target->GetMakefile());
@@ -77,11 +77,9 @@ std::string cmExportTryCompileFileGenerator::FindTargets(
 
   const std::set<cmGeneratorTarget const*>& allTargets =
     cge->GetAllTargetsSeen();
-  for (std::set<cmGeneratorTarget const*>::const_iterator li =
-         allTargets.begin();
-       li != allTargets.end(); ++li) {
-    if (emitted.insert(*li).second) {
-      this->Exports.push_back(*li);
+  for (cmGeneratorTarget const* target : allTargets) {
+    if (emitted.insert(target).second) {
+      this->Exports.push_back(target);
     }
   }
   return result;
@@ -92,22 +90,20 @@ void cmExportTryCompileFileGenerator::PopulateProperties(
   std::set<cmGeneratorTarget const*>& emitted)
 {
   std::vector<std::string> props = target->GetPropertyKeys();
-  for (std::vector<std::string>::const_iterator i = props.begin();
-       i != props.end(); ++i) {
+  for (std::string const& p : props) {
 
-    properties[*i] = target->GetProperty(*i);
+    properties[p] = target->GetProperty(p);
 
-    if (i->find("IMPORTED_LINK_INTERFACE_LIBRARIES") == 0 ||
-        i->find("IMPORTED_LINK_DEPENDENT_LIBRARIES") == 0 ||
-        i->find("INTERFACE_LINK_LIBRARIES") == 0) {
-      std::string evalResult = this->FindTargets(*i, target, emitted);
+    if (p.find("IMPORTED_LINK_INTERFACE_LIBRARIES") == 0 ||
+        p.find("IMPORTED_LINK_DEPENDENT_LIBRARIES") == 0 ||
+        p.find("INTERFACE_LINK_LIBRARIES") == 0) {
+      std::string evalResult = this->FindTargets(p, target, emitted);
 
       std::vector<std::string> depends;
       cmSystemTools::ExpandListArgument(evalResult, depends);
-      for (std::vector<std::string>::const_iterator li = depends.begin();
-           li != depends.end(); ++li) {
+      for (std::string const& li : depends) {
         cmGeneratorTarget* tgt =
-          target->GetLocalGenerator()->FindGeneratorTargetToUse(*li);
+          target->GetLocalGenerator()->FindGeneratorTargetToUse(li);
         if (tgt && emitted.insert(tgt).second) {
           this->Exports.push_back(tgt);
         }
diff --git a/Source/cmExportTryCompileFileGenerator.h b/Source/cmExportTryCompileFileGenerator.h
index 9671fac8f..70c385728 100644
--- a/Source/cmExportTryCompileFileGenerator.h
+++ b/Source/cmExportTryCompileFileGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmExportTryCompileFileGenerator_h
 #define cmExportTryCompileFileGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmExportFileGenerator.h"
 
@@ -27,15 +27,15 @@ public:
   void SetConfig(const std::string& config) { this->Config = config; }
 protected:
   // Implement virtual methods from the superclass.
-  bool GenerateMainFile(std::ostream& os) CM_OVERRIDE;
+  bool GenerateMainFile(std::ostream& os) override;
 
   void GenerateImportTargetsConfig(std::ostream&, const std::string&,
                                    std::string const&,
-                                   std::vector<std::string>&) CM_OVERRIDE
+                                   std::vector<std::string>&) override
   {
   }
   void HandleMissingTarget(std::string&, std::vector<std::string>&,
-                           cmGeneratorTarget*, cmGeneratorTarget*) CM_OVERRIDE
+                           cmGeneratorTarget*, cmGeneratorTarget*) override
   {
   }
 
@@ -44,7 +44,7 @@ protected:
                           std::set<const cmGeneratorTarget*>& emitted);
 
   std::string InstallNameDir(cmGeneratorTarget* target,
-                             const std::string& config) CM_OVERRIDE;
+                             const std::string& config) override;
 
 private:
   std::string FindTargets(const std::string& prop,
diff --git a/Source/cmExprParserHelper.cxx b/Source/cmExprParserHelper.cxx
index c3f026a4e..fe7159a8d 100644
--- a/Source/cmExprParserHelper.cxx
+++ b/Source/cmExprParserHelper.cxx
@@ -2,8 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmExprParserHelper.h"
 
-#include "cmConfigure.h"
-
 #include "cmExprLexer.h"
 
 #include <iostream>
@@ -14,7 +12,7 @@ int cmExpr_yyparse(yyscan_t yyscanner);
 cmExprParserHelper::cmExprParserHelper()
 {
   this->FileLine = -1;
-  this->FileName = CM_NULLPTR;
+  this->FileName = nullptr;
 }
 
 cmExprParserHelper::~cmExprParserHelper()
diff --git a/Source/cmExternalMakefileProjectGenerator.h b/Source/cmExternalMakefileProjectGenerator.h
index 6b8903790..a1734eef2 100644
--- a/Source/cmExternalMakefileProjectGenerator.h
+++ b/Source/cmExternalMakefileProjectGenerator.h
@@ -99,7 +99,7 @@ public:
   }
 
   cmExternalMakefileProjectGenerator* CreateExternalMakefileProjectGenerator()
-    const CM_OVERRIDE
+    const override
   {
     T* p = new T;
     p->SetName(GetName());
diff --git a/Source/cmExtraCodeBlocksGenerator.cxx b/Source/cmExtraCodeBlocksGenerator.cxx
index 5b7b82762..9c9b75b17 100644
--- a/Source/cmExtraCodeBlocksGenerator.cxx
+++ b/Source/cmExtraCodeBlocksGenerator.cxx
@@ -4,6 +4,7 @@
 
 #include <map>
 #include <ostream>
+#include <set>
 #include <string.h>
 #include <utility>
 
@@ -62,11 +63,9 @@ cmExtraCodeBlocksGenerator::GetFactory()
 void cmExtraCodeBlocksGenerator::Generate()
 {
   // for each sub project in the project create a codeblocks project
-  for (std::map<std::string, std::vector<cmLocalGenerator*> >::const_iterator
-         it = this->GlobalGenerator->GetProjectMap().begin();
-       it != this->GlobalGenerator->GetProjectMap().end(); ++it) {
+  for (auto const& it : this->GlobalGenerator->GetProjectMap()) {
     // create a project file
-    this->CreateProjectFile(it->second);
+    this->CreateProjectFile(it.second);
   }
 }
 
@@ -95,7 +94,7 @@ struct Tree
 {
   std::string path; // only one component of the path
   std::vector<Tree> folders;
-  std::vector<std::string> files;
+  std::set<std::string> files;
   void InsertPath(const std::vector<std::string>& splitted,
                   std::vector<std::string>::size_type start,
                   const std::string& fileName);
@@ -112,18 +111,17 @@ void Tree::InsertPath(const std::vector<std::string>& splitted,
                       const std::string& fileName)
 {
   if (start == splitted.size()) {
-    files.push_back(fileName);
+    files.insert(fileName);
     return;
   }
-  for (std::vector<Tree>::iterator it = folders.begin(); it != folders.end();
-       ++it) {
-    if ((*it).path == splitted[start]) {
+  for (Tree& folder : folders) {
+    if (folder.path == splitted[start]) {
       if (start + 1 < splitted.size()) {
-        it->InsertPath(splitted, start + 1, fileName);
+        folder.InsertPath(splitted, start + 1, fileName);
         return;
       }
       // last part of splitted
-      it->files.push_back(fileName);
+      folder.files.insert(fileName);
       return;
     }
   }
@@ -136,7 +134,7 @@ void Tree::InsertPath(const std::vector<std::string>& splitted,
     return;
   }
   // last part of splitted
-  newFolder.files.push_back(fileName);
+  newFolder.files.insert(fileName);
   folders.push_back(newFolder);
 }
 
@@ -144,9 +142,8 @@ void Tree::BuildVirtualFolder(cmXMLWriter& xml) const
 {
   xml.StartElement("Option");
   std::string virtualFolders = "CMake Files\\;";
-  for (std::vector<Tree>::const_iterator it = folders.begin();
-       it != folders.end(); ++it) {
-    it->BuildVirtualFolderImpl(virtualFolders, "");
+  for (Tree const& folder : folders) {
+    folder.BuildVirtualFolderImpl(virtualFolders, "");
   }
   xml.Attribute("virtualFolders", virtualFolders);
   xml.EndElement();
@@ -156,18 +153,16 @@ void Tree::BuildVirtualFolderImpl(std::string& virtualFolders,
                                   const std::string& prefix) const
 {
   virtualFolders += "CMake Files\\" + prefix + path + "\\;";
-  for (std::vector<Tree>::const_iterator it = folders.begin();
-       it != folders.end(); ++it) {
-    it->BuildVirtualFolderImpl(virtualFolders, prefix + path + "\\");
+  for (Tree const& folder : folders) {
+    folder.BuildVirtualFolderImpl(virtualFolders, prefix + path + "\\");
   }
 }
 
 void Tree::BuildUnit(cmXMLWriter& xml, const std::string& fsPath) const
 {
-  for (std::vector<std::string>::const_iterator it = files.begin();
-       it != files.end(); ++it) {
+  for (std::string const& f : files) {
     xml.StartElement("Unit");
-    xml.Attribute("filename", fsPath + *it);
+    xml.Attribute("filename", fsPath + f);
 
     xml.StartElement("Option");
     xml.Attribute("virtualFolder", "CMake Files\\");
@@ -175,9 +170,8 @@ void Tree::BuildUnit(cmXMLWriter& xml, const std::string& fsPath) const
 
     xml.EndElement();
   }
-  for (std::vector<Tree>::const_iterator it = folders.begin();
-       it != folders.end(); ++it) {
-    it->BuildUnitImpl(xml, "", fsPath);
+  for (Tree const& folder : folders) {
+    folder.BuildUnitImpl(xml, "", fsPath);
   }
 }
 
@@ -185,10 +179,9 @@ void Tree::BuildUnitImpl(cmXMLWriter& xml,
                          const std::string& virtualFolderPath,
                          const std::string& fsPath) const
 {
-  for (std::vector<std::string>::const_iterator it = files.begin();
-       it != files.end(); ++it) {
+  for (std::string const& f : files) {
     xml.StartElement("Unit");
-    xml.Attribute("filename", fsPath + path + "/" + *it);
+    xml.Attribute("filename", fsPath + path + "/" + f);
 
     xml.StartElement("Option");
     xml.Attribute("virtualFolder",
@@ -197,10 +190,9 @@ void Tree::BuildUnitImpl(cmXMLWriter& xml,
 
     xml.EndElement();
   }
-  for (std::vector<Tree>::const_iterator it = folders.begin();
-       it != folders.end(); ++it) {
-    it->BuildUnitImpl(xml, virtualFolderPath + path + "\\",
-                      fsPath + path + "/");
+  for (Tree const& folder : folders) {
+    folder.BuildUnitImpl(xml, virtualFolderPath + path + "\\",
+                         fsPath + path + "/");
   }
 }
 
@@ -216,29 +208,24 @@ void cmExtraCodeBlocksGenerator::CreateNewProjectFile(
   Tree tree;
 
   // build tree of virtual folders
-  for (std::map<std::string, std::vector<cmLocalGenerator*> >::const_iterator
-         it = this->GlobalGenerator->GetProjectMap().begin();
-       it != this->GlobalGenerator->GetProjectMap().end(); ++it) {
+  for (auto const& it : this->GlobalGenerator->GetProjectMap()) {
     // Collect all files
     std::vector<std::string> listFiles;
-    for (std::vector<cmLocalGenerator*>::const_iterator jt =
-           it->second.begin();
-         jt != it->second.end(); ++jt) {
+    for (cmLocalGenerator* lg : it.second) {
       const std::vector<std::string>& files =
-        (*jt)->GetMakefile()->GetListFiles();
+        lg->GetMakefile()->GetListFiles();
       listFiles.insert(listFiles.end(), files.begin(), files.end());
     }
 
     // Convert
-    for (std::vector<std::string>::const_iterator jt = listFiles.begin();
-         jt != listFiles.end(); ++jt) {
+    for (std::string const& listFile : listFiles) {
       // don't put cmake's own files into the project (#12110):
-      if (jt->find(cmSystemTools::GetCMakeRoot()) == 0) {
+      if (listFile.find(cmSystemTools::GetCMakeRoot()) == 0) {
         continue;
       }
 
       const std::string& relative = cmSystemTools::RelativePath(
-        it->second[0]->GetSourceDirectory(), jt->c_str());
+        it.second[0]->GetSourceDirectory(), listFile.c_str());
       std::vector<std::string> splitted;
       cmSystemTools::SplitPath(relative, splitted, false);
       // Split filename from path
@@ -248,7 +235,14 @@ void cmExtraCodeBlocksGenerator::CreateNewProjectFile(
       // We don't want paths with CMakeFiles in them
       // or do we?
       // In speedcrunch those where purely internal
+      //
+      // Also we can disable external (outside the project) files by setting ON
+      // CMAKE_CODEBLOCKS_EXCLUDE_EXTERNAL_FILES variable.
+      const bool excludeExternal =
+        cmSystemTools::IsOn(it.second[0]->GetMakefile()->GetSafeDefinition(
+          "CMAKE_CODEBLOCKS_EXCLUDE_EXTERNAL_FILES"));
       if (!splitted.empty() &&
+          (!excludeExternal || (relative.find("..") == std::string::npos)) &&
           relative.find("CMakeFiles") == std::string::npos) {
         tree.InsertPath(splitted, 1, fileName);
       }
@@ -289,24 +283,22 @@ void cmExtraCodeBlocksGenerator::CreateNewProjectFile(
 
   xml.StartElement("Build");
 
-  this->AppendTarget(xml, "all", CM_NULLPTR, make.c_str(), lgs[0],
+  this->AppendTarget(xml, "all", nullptr, make.c_str(), lgs[0],
                      compiler.c_str(), makeArgs);
 
   // add all executable and library targets and some of the GLOBAL
   // and UTILITY targets
-  for (std::vector<cmLocalGenerator*>::const_iterator lg = lgs.begin();
-       lg != lgs.end(); lg++) {
-    std::vector<cmGeneratorTarget*> targets = (*lg)->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::iterator ti = targets.begin();
-         ti != targets.end(); ti++) {
-      std::string targetName = (*ti)->GetName();
-      switch ((*ti)->GetType()) {
+  for (cmLocalGenerator* lg : lgs) {
+    const std::vector<cmGeneratorTarget*>& targets = lg->GetGeneratorTargets();
+    for (cmGeneratorTarget* target : targets) {
+      std::string targetName = target->GetName();
+      switch (target->GetType()) {
         case cmStateEnums::GLOBAL_TARGET: {
           // Only add the global targets from CMAKE_BINARY_DIR,
           // not from the subdirs
-          if (strcmp((*lg)->GetCurrentBinaryDirectory(),
-                     (*lg)->GetBinaryDirectory()) == 0) {
-            this->AppendTarget(xml, targetName, CM_NULLPTR, make.c_str(), *lg,
+          if (strcmp(lg->GetCurrentBinaryDirectory(),
+                     lg->GetBinaryDirectory()) == 0) {
+            this->AppendTarget(xml, targetName, nullptr, make.c_str(), lg,
                                compiler.c_str(), makeArgs);
           }
         } break;
@@ -322,7 +314,7 @@ void cmExtraCodeBlocksGenerator::CreateNewProjectFile(
             break;
           }
 
-          this->AppendTarget(xml, targetName, CM_NULLPTR, make.c_str(), *lg,
+          this->AppendTarget(xml, targetName, nullptr, make.c_str(), lg,
                              compiler.c_str(), makeArgs);
           break;
         case cmStateEnums::EXECUTABLE:
@@ -330,12 +322,12 @@ void cmExtraCodeBlocksGenerator::CreateNewProjectFile(
         case cmStateEnums::SHARED_LIBRARY:
         case cmStateEnums::MODULE_LIBRARY:
         case cmStateEnums::OBJECT_LIBRARY: {
-          cmGeneratorTarget* gt = *ti;
-          this->AppendTarget(xml, targetName, gt, make.c_str(), *lg,
+          cmGeneratorTarget* gt = target;
+          this->AppendTarget(xml, targetName, gt, make.c_str(), lg,
                              compiler.c_str(), makeArgs);
           std::string fastTarget = targetName;
           fastTarget += "/fast";
-          this->AppendTarget(xml, fastTarget, gt, make.c_str(), *lg,
+          this->AppendTarget(xml, fastTarget, gt, make.c_str(), lg,
                              compiler.c_str(), makeArgs);
         } break;
         default:
@@ -356,13 +348,11 @@ void cmExtraCodeBlocksGenerator::CreateNewProjectFile(
   std::vector<std::string> const& srcExts =
     this->GlobalGenerator->GetCMakeInstance()->GetSourceExtensions();
 
-  for (std::vector<cmLocalGenerator*>::const_iterator lg = lgs.begin();
-       lg != lgs.end(); lg++) {
-    cmMakefile* makefile = (*lg)->GetMakefile();
-    std::vector<cmGeneratorTarget*> targets = (*lg)->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::iterator ti = targets.begin();
-         ti != targets.end(); ti++) {
-      switch ((*ti)->GetType()) {
+  for (cmLocalGenerator* lg : lgs) {
+    cmMakefile* makefile = lg->GetMakefile();
+    const std::vector<cmGeneratorTarget*>& targets = lg->GetGeneratorTargets();
+    for (cmGeneratorTarget* target : targets) {
+      switch (target->GetType()) {
         case cmStateEnums::EXECUTABLE:
         case cmStateEnums::STATIC_LIBRARY:
         case cmStateEnums::SHARED_LIBRARY:
@@ -371,41 +361,51 @@ void cmExtraCodeBlocksGenerator::CreateNewProjectFile(
         case cmStateEnums::UTILITY: // can have sources since 2.6.3
         {
           std::vector<cmSourceFile*> sources;
-          cmGeneratorTarget* gt = *ti;
+          cmGeneratorTarget* gt = target;
           gt->GetSourceFiles(sources,
                              makefile->GetSafeDefinition("CMAKE_BUILD_TYPE"));
-          for (std::vector<cmSourceFile*>::const_iterator si = sources.begin();
-               si != sources.end(); si++) {
+          for (cmSourceFile* s : sources) {
             // don't add source files from UTILITY target which have the
             // GENERATED property set:
             if (gt->GetType() == cmStateEnums::UTILITY &&
-                (*si)->GetPropertyAsBool("GENERATED")) {
+                s->GetPropertyAsBool("GENERATED")) {
               continue;
             }
 
             // check whether it is a C/C++ implementation file
             bool isCFile = false;
-            std::string lang = (*si)->GetLanguage();
+            std::string lang = s->GetLanguage();
             if (lang == "C" || lang == "CXX") {
-              std::string const& srcext = (*si)->GetExtension();
-              for (std::vector<std::string>::const_iterator ext =
-                     srcExts.begin();
-                   ext != srcExts.end(); ++ext) {
-                if (srcext == *ext) {
+              std::string const& srcext = s->GetExtension();
+              for (std::string const& ext : srcExts) {
+                if (srcext == ext) {
                   isCFile = true;
                   break;
                 }
               }
             }
 
-            std::string const& fullPath = (*si)->GetFullPath();
+            std::string const& fullPath = s->GetFullPath();
+
+            // Check file position relative to project root dir.
+            const std::string& relative = cmSystemTools::RelativePath(
+              (*lg).GetSourceDirectory(), fullPath.c_str());
+            // Do not add this file if it has ".." in relative path and
+            // if CMAKE_CODEBLOCKS_EXCLUDE_EXTERNAL_FILES variable is on.
+            const bool excludeExternal =
+              cmSystemTools::IsOn((*lg).GetMakefile()->GetSafeDefinition(
+                "CMAKE_CODEBLOCKS_EXCLUDE_EXTERNAL_FILES"));
+            if (excludeExternal &&
+                (relative.find("..") != std::string::npos)) {
+              continue;
+            }
 
             if (isCFile) {
               cFiles.push_back(fullPath);
             }
 
             CbpUnit& cbpUnit = allFiles[fullPath];
-            cbpUnit.Targets.push_back(*ti);
+            cbpUnit.Targets.push_back(target);
           }
         }
         default: // intended fallthrough
@@ -424,19 +424,16 @@ void cmExtraCodeBlocksGenerator::CreateNewProjectFile(
   // file exists. If it does, it is inserted into the map of files.
   // A very similar version of that code exists also in the kdevelop
   // project generator.
-  for (std::vector<std::string>::const_iterator sit = cFiles.begin();
-       sit != cFiles.end(); ++sit) {
-    std::string const& fileName = *sit;
+  for (std::string const& fileName : cFiles) {
     std::string headerBasename = cmSystemTools::GetFilenamePath(fileName);
     headerBasename += "/";
     headerBasename += cmSystemTools::GetFilenameWithoutExtension(fileName);
 
     // check if there's a matching header around
-    for (std::vector<std::string>::const_iterator ext = headerExts.begin();
-         ext != headerExts.end(); ++ext) {
+    for (std::string const& ext : headerExts) {
       std::string hname = headerBasename;
       hname += ".";
-      hname += *ext;
+      hname += ext;
       // if it's already in the set, don't check if it exists on disk
       if (allFiles.find(hname) != allFiles.end()) {
         break;
@@ -450,19 +447,16 @@ void cmExtraCodeBlocksGenerator::CreateNewProjectFile(
   }
 
   // insert all source files in the CodeBlocks project
-  for (all_files_map_t::const_iterator sit = allFiles.begin();
-       sit != allFiles.end(); ++sit) {
-    std::string const& unitFilename = sit->first;
-    CbpUnit const& unit = sit->second;
+  for (auto const& s : allFiles) {
+    std::string const& unitFilename = s.first;
+    CbpUnit const& unit = s.second;
 
     xml.StartElement("Unit");
     xml.Attribute("filename", unitFilename);
 
-    for (std::vector<const cmGeneratorTarget*>::const_iterator ti =
-           unit.Targets.begin();
-         ti != unit.Targets.end(); ++ti) {
+    for (cmGeneratorTarget const* tgt : unit.Targets) {
       xml.StartElement("Option");
-      xml.Attribute("target", (*ti)->GetName());
+      xml.Attribute("target", tgt->GetName());
       xml.EndElement();
     }
 
@@ -515,7 +509,7 @@ void cmExtraCodeBlocksGenerator::AppendTarget(
   xml.StartElement("Target");
   xml.Attribute("title", targetName);
 
-  if (target != CM_NULLPTR) {
+  if (target != nullptr) {
     int cbTargetType = this->GetCBTargetType(target);
     std::string workingDir = lg->GetCurrentBinaryDirectory();
     if (target->GetType() == cmStateEnums::EXECUTABLE) {
@@ -523,12 +517,12 @@ void cmExtraCodeBlocksGenerator::AppendTarget(
       // set the working directory to this dir.
       const char* runtimeOutputDir =
         makefile->GetDefinition("CMAKE_RUNTIME_OUTPUT_DIRECTORY");
-      if (runtimeOutputDir != CM_NULLPTR) {
+      if (runtimeOutputDir != nullptr) {
         workingDir = runtimeOutputDir;
       } else {
         const char* executableOutputDir =
           makefile->GetDefinition("EXECUTABLE_OUTPUT_PATH");
-        if (executableOutputDir != CM_NULLPTR) {
+        if (executableOutputDir != nullptr) {
           workingDir = executableOutputDir;
         }
       }
@@ -572,10 +566,9 @@ void cmExtraCodeBlocksGenerator::AppendTarget(
     target->GetCompileDefinitions(cdefs, buildType, "C");
 
     // Expand the list.
-    for (std::vector<std::string>::const_iterator di = cdefs.begin();
-         di != cdefs.end(); ++di) {
+    for (std::string const& d : cdefs) {
       xml.StartElement("Add");
-      xml.Attribute("option", "-D" + *di);
+      xml.Attribute("option", "-D" + d);
       xml.EndElement();
     }
 
diff --git a/Source/cmExtraCodeBlocksGenerator.h b/Source/cmExtraCodeBlocksGenerator.h
index 450a9d02c..be3af2562 100644
--- a/Source/cmExtraCodeBlocksGenerator.h
+++ b/Source/cmExtraCodeBlocksGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmExtraCodeBlocksGenerator_h
 #define cmExtraCodeBlocksGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmExternalMakefileProjectGenerator.h"
 
@@ -25,7 +25,7 @@ public:
 
   static cmExternalMakefileProjectGeneratorFactory* GetFactory();
 
-  void Generate() CM_OVERRIDE;
+  void Generate() override;
 
 private:
   struct CbpUnit
diff --git a/Source/cmExtraCodeLiteGenerator.cxx b/Source/cmExtraCodeLiteGenerator.cxx
index b478f34fa..5a02d54eb 100644
--- a/Source/cmExtraCodeLiteGenerator.cxx
+++ b/Source/cmExtraCodeLiteGenerator.cxx
@@ -54,26 +54,24 @@ void cmExtraCodeLiteGenerator::Generate()
   std::string workspaceFileName;
   std::string workspaceSourcePath;
 
-  const std::map<std::string, std::vector<cmLocalGenerator*> >& projectMap =
+  const std::map<std::string, std::vector<cmLocalGenerator*>>& projectMap =
     this->GlobalGenerator->GetProjectMap();
 
   // loop projects and locate the root project.
   // and extract the information for creating the worspace
   // root makefile
-  for (std::map<std::string, std::vector<cmLocalGenerator*> >::const_iterator
-         it = projectMap.begin();
-       it != projectMap.end(); ++it) {
-    const cmMakefile* mf = it->second[0]->GetMakefile();
+  for (auto const& it : projectMap) {
+    const cmMakefile* mf = it.second[0]->GetMakefile();
     this->ConfigName = GetConfigurationName(mf);
 
-    if (strcmp(it->second[0]->GetCurrentBinaryDirectory(),
-               it->second[0]->GetBinaryDirectory()) == 0) {
-      workspaceOutputDir = it->second[0]->GetCurrentBinaryDirectory();
-      workspaceProjectName = it->second[0]->GetProjectName();
-      workspaceSourcePath = it->second[0]->GetSourceDirectory();
+    if (strcmp(it.second[0]->GetCurrentBinaryDirectory(),
+               it.second[0]->GetBinaryDirectory()) == 0) {
+      workspaceOutputDir = it.second[0]->GetCurrentBinaryDirectory();
+      workspaceProjectName = it.second[0]->GetProjectName();
+      workspaceSourcePath = it.second[0]->GetSourceDirectory();
       workspaceFileName = workspaceOutputDir + "/";
       workspaceFileName += workspaceProjectName + ".workspace";
-      this->WorkspacePath = it->second[0]->GetCurrentBinaryDirectory();
+      this->WorkspacePath = it.second[0]->GetCurrentBinaryDirectory();
       ;
       break;
     }
@@ -101,10 +99,9 @@ void cmExtraCodeLiteGenerator::Generate()
   xml.Attribute("Name", this->ConfigName);
   xml.Attribute("Selected", "yes");
 
-  for (std::vector<std::string>::iterator it(ProjectNames.begin());
-       it != ProjectNames.end(); it++) {
+  for (std::string const& it : ProjectNames) {
     xml.StartElement("Project");
-    xml.Attribute("Name", *it);
+    xml.Attribute("Name", it);
     xml.Attribute("ConfigName", this->ConfigName);
     xml.EndElement();
   }
@@ -122,14 +119,11 @@ std::vector<std::string> cmExtraCodeLiteGenerator::CreateProjectsByTarget(
   // for each target in the workspace create a codelite project
   const std::vector<cmLocalGenerator*>& lgs =
     this->GlobalGenerator->GetLocalGenerators();
-  for (std::vector<cmLocalGenerator*>::const_iterator lg(lgs.begin());
-       lg != lgs.end(); lg++) {
-    for (std::vector<cmGeneratorTarget*>::const_iterator lt =
-           (*lg)->GetGeneratorTargets().begin();
-         lt != (*lg)->GetGeneratorTargets().end(); lt++) {
-      cmStateEnums::TargetType type = (*lt)->GetType();
-      std::string outputDir = (*lg)->GetCurrentBinaryDirectory();
-      std::string targetName = (*lt)->GetName();
+  for (cmLocalGenerator* lg : lgs) {
+    for (cmGeneratorTarget* lt : lg->GetGeneratorTargets()) {
+      cmStateEnums::TargetType type = lt->GetType();
+      std::string outputDir = lg->GetCurrentBinaryDirectory();
+      std::string targetName = lt->GetName();
       std::string filename = outputDir + "/" + targetName + ".project";
       retval.push_back(targetName);
       // Make the project file relative to the workspace
@@ -149,7 +143,7 @@ std::vector<std::string> cmExtraCodeLiteGenerator::CreateProjectsByTarget(
           xml->Attribute("Active", "No");
           xml->EndElement();
 
-          CreateNewProjectFile(*lt, filename);
+          CreateNewProjectFile(lt, filename);
           break;
         default:
           break;
@@ -165,12 +159,10 @@ std::vector<std::string> cmExtraCodeLiteGenerator::CreateProjectsByProjectMaps(
 {
   std::vector<std::string> retval;
   // for each sub project in the workspace create a codelite project
-  for (std::map<std::string, std::vector<cmLocalGenerator*> >::const_iterator
-         it = this->GlobalGenerator->GetProjectMap().begin();
-       it != this->GlobalGenerator->GetProjectMap().end(); it++) {
+  for (auto const& it : this->GlobalGenerator->GetProjectMap()) {
 
-    std::string outputDir = it->second[0]->GetCurrentBinaryDirectory();
-    std::string projectName = it->second[0]->GetProjectName();
+    std::string outputDir = it.second[0]->GetCurrentBinaryDirectory();
+    std::string projectName = it.second[0]->GetProjectName();
     retval.push_back(projectName);
     std::string filename = outputDir + "/" + projectName + ".project";
 
@@ -179,7 +171,7 @@ std::vector<std::string> cmExtraCodeLiteGenerator::CreateProjectsByProjectMaps(
                                            filename.c_str());
 
     // create a project file
-    this->CreateProjectFile(it->second);
+    this->CreateProjectFile(it.second);
     xml->StartElement("Project");
     xml->Attribute("Name", projectName);
     xml->Attribute("Path", filename);
@@ -235,16 +227,14 @@ std::string cmExtraCodeLiteGenerator::CollectSourceFiles(
       std::vector<cmSourceFile*> sources;
       gt->GetSourceFiles(sources,
                          makefile->GetSafeDefinition("CMAKE_BUILD_TYPE"));
-      for (std::vector<cmSourceFile*>::const_iterator si = sources.begin();
-           si != sources.end(); si++) {
+      for (cmSourceFile* s : sources) {
         // check whether it is a C/C++ implementation file
         bool isCFile = false;
-        std::string lang = (*si)->GetLanguage();
+        std::string lang = s->GetLanguage();
         if (lang == "C" || lang == "CXX") {
-          std::string const& srcext = (*si)->GetExtension();
-          for (std::vector<std::string>::const_iterator ext = srcExts.begin();
-               ext != srcExts.end(); ++ext) {
-            if (srcext == *ext) {
+          std::string const& srcext = s->GetExtension();
+          for (std::string const& ext : srcExts) {
+            if (srcext == ext) {
               isCFile = true;
               break;
             }
@@ -253,9 +243,9 @@ std::string cmExtraCodeLiteGenerator::CollectSourceFiles(
 
         // then put it accordingly into one of the two containers
         if (isCFile) {
-          cFiles[(*si)->GetFullPath()] = *si;
+          cFiles[s->GetFullPath()] = s;
         } else {
-          otherFiles.insert((*si)->GetFullPath());
+          otherFiles.insert(s->GetFullPath());
         }
       }
     }
@@ -289,13 +279,11 @@ void cmExtraCodeLiteGenerator::CreateNewProjectFile(
   std::map<std::string, cmSourceFile*> cFiles;
   std::set<std::string> otherFiles;
 
-  for (std::vector<cmLocalGenerator*>::const_iterator lg = lgs.begin();
-       lg != lgs.end(); lg++) {
-    cmMakefile* makefile = (*lg)->GetMakefile();
-    std::vector<cmGeneratorTarget*> targets = (*lg)->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::iterator ti = targets.begin();
-         ti != targets.end(); ti++) {
-      projectType = CollectSourceFiles(makefile, *ti, cFiles, otherFiles);
+  for (cmLocalGenerator* lg : lgs) {
+    cmMakefile* makefile = lg->GetMakefile();
+    const std::vector<cmGeneratorTarget*>& targets = lg->GetGeneratorTargets();
+    for (cmGeneratorTarget* target : targets) {
+      projectType = CollectSourceFiles(makefile, target, cFiles, otherFiles);
     }
   }
 
@@ -323,19 +311,16 @@ void cmExtraCodeLiteGenerator::FindMatchingHeaderfiles(
   // file exists. If it does, it is inserted into the map of files.
   // A very similar version of that code exists also in the kdevelop
   // project generator.
-  for (std::map<std::string, cmSourceFile*>::const_iterator sit =
-         cFiles.begin();
-       sit != cFiles.end(); ++sit) {
-    std::string headerBasename = cmSystemTools::GetFilenamePath(sit->first);
+  for (auto const& sit : cFiles) {
+    std::string headerBasename = cmSystemTools::GetFilenamePath(sit.first);
     headerBasename += "/";
-    headerBasename += cmSystemTools::GetFilenameWithoutExtension(sit->first);
+    headerBasename += cmSystemTools::GetFilenameWithoutExtension(sit.first);
 
     // check if there's a matching header around
-    for (std::vector<std::string>::const_iterator ext = headerExts.begin();
-         ext != headerExts.end(); ++ext) {
+    for (std::string const& ext : headerExts) {
       std::string hname = headerBasename;
       hname += ".";
-      hname += *ext;
+      hname += ext;
       // if it's already in the set, don't check if it exists on disk
       std::set<std::string>::const_iterator headerIt = otherFiles.find(hname);
       if (headerIt != otherFiles.end()) {
@@ -358,10 +343,9 @@ void cmExtraCodeLiteGenerator::CreateFoldersAndFiles(
   std::vector<std::string> components;
   size_t numOfEndEl = 0;
 
-  for (std::set<std::string>::const_iterator it = cFiles.begin();
-       it != cFiles.end(); ++it) {
+  for (std::string const& cFile : cFiles) {
     std::string frelapath =
-      cmSystemTools::RelativePath(projectPath.c_str(), it->c_str());
+      cmSystemTools::RelativePath(projectPath.c_str(), cFile.c_str());
     cmsys::SystemTools::SplitPath(frelapath, components, false);
     components.pop_back(); // erase last member -> it is file, not folder
     components.erase(components.begin()); // erase "root"
@@ -423,10 +407,8 @@ void cmExtraCodeLiteGenerator::CreateFoldersAndFiles(
   const std::string& projectPath)
 {
   std::set<std::string> s;
-  for (std::map<std::string, cmSourceFile*>::const_iterator it =
-         cFiles.begin();
-       it != cFiles.end(); ++it) {
-    s.insert(it->first);
+  for (auto const& it : cFiles) {
+    s.insert(it.first);
   }
   this->CreateFoldersAndFiles(s, xml, projectPath);
 }
diff --git a/Source/cmExtraCodeLiteGenerator.h b/Source/cmExtraCodeLiteGenerator.h
index de330988d..029054fdd 100644
--- a/Source/cmExtraCodeLiteGenerator.h
+++ b/Source/cmExtraCodeLiteGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmGlobalCodeLiteGenerator_h
 #define cmGlobalCodeLiteGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmExternalMakefileProjectGenerator.h"
 
@@ -60,7 +60,7 @@ public:
 
   static cmExternalMakefileProjectGeneratorFactory* GetFactory();
 
-  void Generate() CM_OVERRIDE;
+  void Generate() override;
   void CreateProjectFile(const std::vector<cmLocalGenerator*>& lgs);
 
   void CreateNewProjectFile(const std::vector<cmLocalGenerator*>& lgs,
diff --git a/Source/cmExtraEclipseCDT4Generator.cxx b/Source/cmExtraEclipseCDT4Generator.cxx
index 2a6ce98a7..a200385ee 100644
--- a/Source/cmExtraEclipseCDT4Generator.cxx
+++ b/Source/cmExtraEclipseCDT4Generator.cxx
@@ -5,7 +5,6 @@
 #include "cmsys/RegularExpression.hxx"
 #include <algorithm>
 #include <assert.h>
-#include <map>
 #include <sstream>
 #include <stdio.h>
 #include <utility>
@@ -78,16 +77,15 @@ void cmExtraEclipseCDT4Generator::EnableLanguage(
   std::vector<std::string> const& languages, cmMakefile* /*unused*/,
   bool /*optional*/)
 {
-  for (std::vector<std::string>::const_iterator lit = languages.begin();
-       lit != languages.end(); ++lit) {
-    if (*lit == "CXX") {
+  for (std::string const& l : languages) {
+    if (l == "CXX") {
       this->Natures.insert("org.eclipse.cdt.core.ccnature");
       this->Natures.insert("org.eclipse.cdt.core.cnature");
       this->CXXEnabled = true;
-    } else if (*lit == "C") {
+    } else if (l == "C") {
       this->Natures.insert("org.eclipse.cdt.core.cnature");
       this->CEnabled = true;
-    } else if (*lit == "Java") {
+    } else if (l == "Java") {
       this->Natures.insert("org.eclipse.jdt.core.javanature");
     }
   }
@@ -222,17 +220,17 @@ void cmExtraEclipseCDT4Generator::AddEnvVar(std::ostream& out,
 
   // now we have both, decide which one to use
   std::string valueToUse;
-  if (!envVarSet && cacheValue == CM_NULLPTR) {
+  if (!envVarSet && cacheValue == nullptr) {
     // nothing known, do nothing
-    valueToUse = "";
-  } else if (envVarSet && cacheValue == CM_NULLPTR) {
+    valueToUse.clear();
+  } else if (envVarSet && cacheValue == nullptr) {
     // The variable is in the env, but not in the cache. Use it and put it
     // in the cache
     valueToUse = envVarValue;
     mf->AddCacheDefinition(cacheEntryName, valueToUse.c_str(),
                            cacheEntryName.c_str(), cmStateEnums::STRING, true);
     mf->GetCMakeInstance()->SaveCache(lg->GetBinaryDirectory());
-  } else if (!envVarSet && cacheValue != CM_NULLPTR) {
+  } else if (!envVarSet && cacheValue != nullptr) {
     // It is already in the cache, but not in the env, so use it from the cache
     valueToUse = cacheValue;
   } else {
@@ -382,18 +380,16 @@ void cmExtraEclipseCDT4Generator::CreateProjectFile()
   xml.Element("nature", "org.eclipse.cdt.make.core.ScannerConfigNature");
   ;
 
-  for (std::set<std::string>::const_iterator nit = this->Natures.begin();
-       nit != this->Natures.end(); ++nit) {
-    xml.Element("nature", *nit);
+  for (std::string const& n : this->Natures) {
+    xml.Element("nature", n);
   }
 
   if (const char* extraNaturesProp =
         mf->GetState()->GetGlobalProperty("ECLIPSE_EXTRA_NATURES")) {
     std::vector<std::string> extraNatures;
     cmSystemTools::ExpandListArgument(extraNaturesProp, extraNatures);
-    for (std::vector<std::string>::const_iterator nit = extraNatures.begin();
-         nit != extraNatures.end(); ++nit) {
-      xml.Element("nature", *nit);
+    for (std::string const& n : extraNatures) {
+      xml.Element("nature", n);
     }
   }
 
@@ -435,25 +431,22 @@ void cmExtraEclipseCDT4Generator::WriteGroups(
   std::vector<cmSourceGroup> const& sourceGroups, std::string& linkName,
   cmXMLWriter& xml)
 {
-  for (std::vector<cmSourceGroup>::const_iterator sgIt = sourceGroups.begin();
-       sgIt != sourceGroups.end(); ++sgIt) {
+  for (cmSourceGroup const& sg : sourceGroups) {
     std::string linkName3 = linkName;
     linkName3 += "/";
-    linkName3 += sgIt->GetFullName();
+    linkName3 += sg.GetFullName();
 
     std::replace(linkName3.begin(), linkName3.end(), '\\', '/');
 
     this->AppendLinkedResource(xml, linkName3, "virtual:/virtual",
                                VirtualFolder);
-    std::vector<cmSourceGroup> const& children = sgIt->GetGroupChildren();
+    std::vector<cmSourceGroup> const& children = sg.GetGroupChildren();
     if (!children.empty()) {
       this->WriteGroups(children, linkName, xml);
     }
-    std::vector<const cmSourceFile*> sFiles = sgIt->GetSourceFiles();
-    for (std::vector<const cmSourceFile*>::const_iterator fileIt =
-           sFiles.begin();
-         fileIt != sFiles.end(); ++fileIt) {
-      std::string const& fullPath = (*fileIt)->GetFullPath();
+    std::vector<const cmSourceFile*> sFiles = sg.GetSourceFiles();
+    for (cmSourceFile const* file : sFiles) {
+      std::string const& fullPath = file->GetFullPath();
 
       if (!cmSystemTools::FileIsDirectory(fullPath)) {
         std::string linkName4 = linkName3;
@@ -471,28 +464,24 @@ void cmExtraEclipseCDT4Generator::CreateLinksForTargets(cmXMLWriter& xml)
   std::string linkName = "[Targets]";
   this->AppendLinkedResource(xml, linkName, "virtual:/virtual", VirtualFolder);
 
-  for (std::vector<cmLocalGenerator*>::const_iterator lgIt =
-         this->GlobalGenerator->GetLocalGenerators().begin();
-       lgIt != this->GlobalGenerator->GetLocalGenerators().end(); ++lgIt) {
-    cmMakefile* makefile = (*lgIt)->GetMakefile();
-    const std::vector<cmGeneratorTarget*> targets =
-      (*lgIt)->GetGeneratorTargets();
+  for (cmLocalGenerator* lg : this->GlobalGenerator->GetLocalGenerators()) {
+    cmMakefile* makefile = lg->GetMakefile();
+    const std::vector<cmGeneratorTarget*>& targets = lg->GetGeneratorTargets();
 
-    for (std::vector<cmGeneratorTarget*>::const_iterator ti = targets.begin();
-         ti != targets.end(); ++ti) {
+    for (cmGeneratorTarget* target : targets) {
       std::string linkName2 = linkName;
       linkName2 += "/";
-      switch ((*ti)->GetType()) {
+      switch (target->GetType()) {
         case cmStateEnums::EXECUTABLE:
         case cmStateEnums::STATIC_LIBRARY:
         case cmStateEnums::SHARED_LIBRARY:
         case cmStateEnums::MODULE_LIBRARY:
         case cmStateEnums::OBJECT_LIBRARY: {
           const char* prefix =
-            ((*ti)->GetType() == cmStateEnums::EXECUTABLE ? "[exe] "
-                                                          : "[lib] ");
+            (target->GetType() == cmStateEnums::EXECUTABLE ? "[exe] "
+                                                           : "[lib] ");
           linkName2 += prefix;
-          linkName2 += (*ti)->GetName();
+          linkName2 += target->GetName();
           this->AppendLinkedResource(xml, linkName2, "virtual:/virtual",
                                      VirtualFolder);
           if (!this->GenerateLinkedResources) {
@@ -501,17 +490,16 @@ void cmExtraEclipseCDT4Generator::CreateLinksForTargets(cmXMLWriter& xml)
           std::vector<cmSourceGroup> sourceGroups =
             makefile->GetSourceGroups();
           // get the files from the source lists then add them to the groups
-          cmGeneratorTarget* gt = const_cast<cmGeneratorTarget*>(*ti);
+          cmGeneratorTarget* gt = const_cast<cmGeneratorTarget*>(target);
           std::vector<cmSourceFile*> files;
           gt->GetSourceFiles(files,
                              makefile->GetSafeDefinition("CMAKE_BUILD_TYPE"));
-          for (std::vector<cmSourceFile*>::const_iterator sfIt = files.begin();
-               sfIt != files.end(); sfIt++) {
+          for (cmSourceFile* sf : files) {
             // Add the file to the list of sources.
-            std::string const& source = (*sfIt)->GetFullPath();
+            std::string const& source = sf->GetFullPath();
             cmSourceGroup* sourceGroup =
               makefile->FindSourceGroup(source.c_str(), sourceGroups);
-            sourceGroup->AssignSource(*sfIt);
+            sourceGroup->AssignSource(sf);
           }
 
           this->WriteGroups(sourceGroups, linkName2, xml);
@@ -536,17 +524,15 @@ void cmExtraEclipseCDT4Generator::CreateLinksToSubprojects(
   this->AppendLinkedResource(xml, "[Subprojects]", "virtual:/virtual",
                              VirtualFolder);
 
-  for (std::map<std::string, std::vector<cmLocalGenerator*> >::const_iterator
-         it = this->GlobalGenerator->GetProjectMap().begin();
-       it != this->GlobalGenerator->GetProjectMap().end(); ++it) {
+  for (auto const& it : this->GlobalGenerator->GetProjectMap()) {
     std::string linkSourceDirectory =
-      this->GetEclipsePath(it->second[0]->GetCurrentSourceDirectory());
+      this->GetEclipsePath(it.second[0]->GetCurrentSourceDirectory());
     // a linked resource must not point to a parent directory of .project or
     // .project itself
     if ((baseDir != linkSourceDirectory) &&
         !cmSystemTools::IsSubDirectory(baseDir, linkSourceDirectory)) {
       std::string linkName = "[Subprojects]/";
-      linkName += it->first;
+      linkName += it.first;
       this->AppendLinkedResource(xml, linkName,
                                  this->GetEclipsePath(linkSourceDirectory),
                                  LinkToFolder);
@@ -560,10 +546,9 @@ void cmExtraEclipseCDT4Generator::AppendIncludeDirectories(
   cmXMLWriter& xml, const std::vector<std::string>& includeDirs,
   std::set<std::string>& emittedDirs)
 {
-  for (std::vector<std::string>::const_iterator inc = includeDirs.begin();
-       inc != includeDirs.end(); ++inc) {
-    if (!inc->empty()) {
-      std::string dir = cmSystemTools::CollapseFullPath(*inc);
+  for (std::string const& inc : includeDirs) {
+    if (!inc.empty()) {
+      std::string dir = cmSystemTools::CollapseFullPath(inc);
 
       // handle framework include dirs on OSX, the remainder after the
       // Frameworks/ part has to be stripped
@@ -712,19 +697,17 @@ void cmExtraEclipseCDT4Generator::CreateCProjectFile() const
     xml.EndElement();
   }
 
-  for (std::vector<std::string>::const_iterator it =
-         this->SrcLinkedResources.begin();
-       it != this->SrcLinkedResources.end(); ++it) {
+  for (std::string const& p : this->SrcLinkedResources) {
     xml.StartElement("pathentry");
     xml.Attribute("kind", "src");
-    xml.Attribute("path", *it);
+    xml.Attribute("path", p);
     xml.EndElement();
 
     // exlude source directory from output search path
     // - only if not named the same as an output directory
     if (!cmSystemTools::FileIsDirectory(
-          std::string(this->HomeOutputDirectory + "/" + *it))) {
-      excludeFromOut += *it + "/|";
+          std::string(this->HomeOutputDirectory + "/" + p))) {
+      excludeFromOut += p + "/|";
     }
   }
 
@@ -738,34 +721,31 @@ void cmExtraEclipseCDT4Generator::CreateCProjectFile() const
 
   // add pre-processor definitions to allow eclipse to gray out sections
   emmited.clear();
-  for (std::vector<cmLocalGenerator*>::const_iterator it =
-         this->GlobalGenerator->GetLocalGenerators().begin();
-       it != this->GlobalGenerator->GetLocalGenerators().end(); ++it) {
+  for (cmLocalGenerator* lgen : this->GlobalGenerator->GetLocalGenerators()) {
 
     if (const char* cdefs =
-          (*it)->GetMakefile()->GetProperty("COMPILE_DEFINITIONS")) {
+          lgen->GetMakefile()->GetProperty("COMPILE_DEFINITIONS")) {
       // Expand the list.
       std::vector<std::string> defs;
       cmGeneratorExpression::Split(cdefs, defs);
 
-      for (std::vector<std::string>::const_iterator di = defs.begin();
-           di != defs.end(); ++di) {
-        if (cmGeneratorExpression::Find(*di) != std::string::npos) {
+      for (std::string const& d : defs) {
+        if (cmGeneratorExpression::Find(d) != std::string::npos) {
           continue;
         }
 
-        std::string::size_type equals = di->find('=', 0);
-        std::string::size_type enddef = di->length();
+        std::string::size_type equals = d.find('=', 0);
+        std::string::size_type enddef = d.length();
 
         std::string def;
         std::string val;
         if (equals != std::string::npos && equals < enddef) {
           // we have -DFOO=BAR
-          def = di->substr(0, equals);
-          val = di->substr(equals + 1, enddef - equals + 1);
+          def = d.substr(0, equals);
+          val = d.substr(equals + 1, enddef - equals + 1);
         } else {
           // we have -DFOO
-          def = *di;
+          def = d;
         }
 
         // insert the definition if not already added.
@@ -850,15 +830,13 @@ void cmExtraEclipseCDT4Generator::CreateCProjectFile() const
 
   // include dirs
   emmited.clear();
-  for (std::vector<cmLocalGenerator*>::const_iterator it =
-         this->GlobalGenerator->GetLocalGenerators().begin();
-       it != this->GlobalGenerator->GetLocalGenerators().end(); ++it) {
-    std::vector<cmGeneratorTarget*> targets = (*it)->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::iterator l = targets.begin();
-         l != targets.end(); ++l) {
+  for (cmLocalGenerator* lgen : this->GlobalGenerator->GetLocalGenerators()) {
+    const std::vector<cmGeneratorTarget*>& targets =
+      lgen->GetGeneratorTargets();
+    for (cmGeneratorTarget* target : targets) {
       std::vector<std::string> includeDirs;
       std::string config = mf->GetSafeDefinition("CMAKE_BUILD_TYPE");
-      (*it)->GetIncludeDirectories(includeDirs, *l, "C", config);
+      lgen->GetIncludeDirectories(includeDirs, target, "C", config);
       this->AppendIncludeDirectories(xml, includeDirs, emmited);
     }
   }
@@ -907,21 +885,18 @@ void cmExtraEclipseCDT4Generator::CreateCProjectFile() const
 
   // add all executable and library targets and some of the GLOBAL
   // and UTILITY targets
-  for (std::vector<cmLocalGenerator*>::const_iterator it =
-         this->GlobalGenerator->GetLocalGenerators().begin();
-       it != this->GlobalGenerator->GetLocalGenerators().end(); ++it) {
-    const std::vector<cmGeneratorTarget*> targets =
-      (*it)->GetGeneratorTargets();
-    std::string subdir = (*it)->ConvertToRelativePath(
-      this->HomeOutputDirectory, (*it)->GetCurrentBinaryDirectory());
+  for (cmLocalGenerator* lgen : this->GlobalGenerator->GetLocalGenerators()) {
+    const std::vector<cmGeneratorTarget*>& targets =
+      lgen->GetGeneratorTargets();
+    std::string subdir = lgen->ConvertToRelativePath(
+      this->HomeOutputDirectory, lgen->GetCurrentBinaryDirectory());
     if (subdir == ".") {
-      subdir = "";
+      subdir.clear();
     }
 
-    for (std::vector<cmGeneratorTarget*>::const_iterator ti = targets.begin();
-         ti != targets.end(); ++ti) {
-      std::string targetName = (*ti)->GetName();
-      switch ((*ti)->GetType()) {
+    for (cmGeneratorTarget* target : targets) {
+      std::string targetName = target->GetName();
+      switch (target->GetType()) {
         case cmStateEnums::GLOBAL_TARGET: {
           // Only add the global targets from CMAKE_BINARY_DIR,
           // not from the subdirs
@@ -949,8 +924,8 @@ void cmExtraEclipseCDT4Generator::CreateCProjectFile() const
         case cmStateEnums::MODULE_LIBRARY:
         case cmStateEnums::OBJECT_LIBRARY: {
           const char* prefix =
-            ((*ti)->GetType() == cmStateEnums::EXECUTABLE ? "[exe] "
-                                                          : "[lib] ");
+            (target->GetType() == cmStateEnums::EXECUTABLE ? "[exe] "
+                                                           : "[lib] ");
           this->AppendTarget(xml, targetName, make, makeArgs, subdir, prefix);
           std::string fastTarget = targetName;
           fastTarget += "/fast";
@@ -962,19 +937,19 @@ void cmExtraEclipseCDT4Generator::CreateCProjectFile() const
             virtDir += prefix;
             virtDir += targetName;
             std::string buildArgs = "-C \"";
-            buildArgs += (*it)->GetBinaryDirectory();
+            buildArgs += lgen->GetBinaryDirectory();
             buildArgs += "\" ";
             buildArgs += makeArgs;
             this->AppendTarget(xml, "Build", make, buildArgs, virtDir, "",
                                targetName.c_str());
 
             std::string cleanArgs = "-E chdir \"";
-            cleanArgs += (*it)->GetCurrentBinaryDirectory();
+            cleanArgs += lgen->GetCurrentBinaryDirectory();
             cleanArgs += "\" \"";
             cleanArgs += cmSystemTools::GetCMakeCommand();
             cleanArgs += "\" -P \"";
-            cmGeneratorTarget* gt = *ti;
-            cleanArgs += (*it)->GetTargetDirectory(gt);
+            cmGeneratorTarget* gt = target;
+            cleanArgs += lgen->GetTargetDirectory(gt);
             cleanArgs += "/cmake_clean.cmake\"";
             this->AppendTarget(xml, "Clean", cmSystemTools::GetCMakeCommand(),
                                cleanArgs, virtDir, "", "");
@@ -996,17 +971,15 @@ void cmExtraEclipseCDT4Generator::CreateCProjectFile() const
     // insert rules for compiling, preprocessing and assembling individual
     // files
     std::vector<std::string> objectFileTargets;
-    (*it)->GetIndividualFileTargets(objectFileTargets);
-    for (std::vector<std::string>::const_iterator fit =
-           objectFileTargets.begin();
-         fit != objectFileTargets.end(); ++fit) {
+    lg->GetIndividualFileTargets(objectFileTargets);
+    for (std::string const& f : objectFileTargets) {
       const char* prefix = "[obj] ";
-      if ((*fit)[fit->length() - 1] == 's') {
+      if (f[f.length() - 1] == 's') {
         prefix = "[to asm] ";
-      } else if ((*fit)[fit->length() - 1] == 'i') {
+      } else if (f[f.length() - 1] == 'i') {
         prefix = "[pre] ";
       }
-      this->AppendTarget(xml, *fit, make, makeArgs, subdir, prefix);
+      this->AppendTarget(xml, f, make, makeArgs, subdir, prefix);
     }
   }
 
diff --git a/Source/cmExtraEclipseCDT4Generator.h b/Source/cmExtraEclipseCDT4Generator.h
index 1380d1867..5136660fa 100644
--- a/Source/cmExtraEclipseCDT4Generator.h
+++ b/Source/cmExtraEclipseCDT4Generator.h
@@ -3,7 +3,7 @@
 #ifndef cmExtraEclipseCDT4Generator_h
 #define cmExtraEclipseCDT4Generator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmExternalMakefileProjectGenerator.h"
 
@@ -35,9 +35,9 @@ public:
   static cmExternalMakefileProjectGeneratorFactory* GetFactory();
 
   void EnableLanguage(std::vector<std::string> const& languages, cmMakefile*,
-                      bool optional) CM_OVERRIDE;
+                      bool optional) override;
 
-  void Generate() CM_OVERRIDE;
+  void Generate() override;
 
 private:
   // create .project file in the source tree
@@ -67,7 +67,7 @@ private:
                            const std::string& make,
                            const std::string& makeArguments,
                            const std::string& path, const char* prefix = "",
-                           const char* makeTarget = CM_NULLPTR);
+                           const char* makeTarget = nullptr);
   static void AppendScannerProfile(
     cmXMLWriter& xml, const std::string& profileID, bool openActionEnabled,
     const std::string& openActionFilePath, bool pParserEnabled,
diff --git a/Source/cmExtraKateGenerator.cxx b/Source/cmExtraKateGenerator.cxx
index 373043309..79cc6ef52 100644
--- a/Source/cmExtraKateGenerator.cxx
+++ b/Source/cmExtraKateGenerator.cxx
@@ -112,18 +112,16 @@ void cmExtraKateGenerator::WriteTargets(const cmLocalGenerator* lg,
 
   // add all executable and library targets and some of the GLOBAL
   // and UTILITY targets
-  for (std::vector<cmLocalGenerator*>::const_iterator it =
-         this->GlobalGenerator->GetLocalGenerators().begin();
-       it != this->GlobalGenerator->GetLocalGenerators().end(); ++it) {
-    const std::vector<cmGeneratorTarget*> targets =
-      (*it)->GetGeneratorTargets();
-    std::string currentDir = (*it)->GetCurrentBinaryDirectory();
-    bool topLevel = (currentDir == (*it)->GetBinaryDirectory());
-
-    for (std::vector<cmGeneratorTarget*>::const_iterator ti = targets.begin();
-         ti != targets.end(); ++ti) {
-      std::string targetName = (*ti)->GetName();
-      switch ((*ti)->GetType()) {
+  for (cmLocalGenerator* localGen :
+       this->GlobalGenerator->GetLocalGenerators()) {
+    const std::vector<cmGeneratorTarget*>& targets =
+      localGen->GetGeneratorTargets();
+    std::string currentDir = localGen->GetCurrentBinaryDirectory();
+    bool topLevel = (currentDir == localGen->GetBinaryDirectory());
+
+    for (cmGeneratorTarget* target : targets) {
+      std::string const& targetName = target->GetName();
+      switch (target->GetType()) {
         case cmStateEnums::GLOBAL_TARGET: {
           bool insertTarget = false;
           // Only add the global targets from CMAKE_BINARY_DIR,
@@ -134,10 +132,10 @@ void cmExtraKateGenerator::WriteTargets(const cmLocalGenerator* lg,
             // this will not work within the IDE
             if (targetName == "edit_cache") {
               const char* editCommand =
-                (*it)->GetMakefile()->GetDefinition("CMAKE_EDIT_COMMAND");
-              if (editCommand == CM_NULLPTR) {
+                localGen->GetMakefile()->GetDefinition("CMAKE_EDIT_COMMAND");
+              if (editCommand == nullptr) {
                 insertTarget = false;
-              } else if (strstr(editCommand, "ccmake") != CM_NULLPTR) {
+              } else if (strstr(editCommand, "ccmake") != nullptr) {
                 insertTarget = false;
               }
             }
@@ -183,12 +181,9 @@ void cmExtraKateGenerator::WriteTargets(const cmLocalGenerator* lg,
     // insert rules for compiling, preprocessing and assembling individual
     // files
     std::vector<std::string> objectFileTargets;
-    (*it)->GetIndividualFileTargets(objectFileTargets);
-    for (std::vector<std::string>::const_iterator fit =
-           objectFileTargets.begin();
-         fit != objectFileTargets.end(); ++fit) {
-      this->AppendTarget(fout, *fit, make, makeArgs, currentDir,
-                         homeOutputDir);
+    localGen->GetIndividualFileTargets(objectFileTargets);
+    for (std::string const& f : objectFileTargets) {
+      this->AppendTarget(fout, f, make, makeArgs, currentDir, homeOutputDir);
     }
   }
 
@@ -251,22 +246,18 @@ std::string cmExtraKateGenerator::GenerateFilesString(
   const std::vector<cmLocalGenerator*>& lgs =
     this->GlobalGenerator->GetLocalGenerators();
 
-  for (std::vector<cmLocalGenerator*>::const_iterator it = lgs.begin();
-       it != lgs.end(); it++) {
-    cmMakefile* makefile = (*it)->GetMakefile();
+  for (cmLocalGenerator* lgen : lgs) {
+    cmMakefile* makefile = lgen->GetMakefile();
     const std::vector<std::string>& listFiles = makefile->GetListFiles();
-    for (std::vector<std::string>::const_iterator lt = listFiles.begin();
-         lt != listFiles.end(); lt++) {
-      tmp = *lt;
+    for (std::string const& listFile : listFiles) {
+      tmp = listFile;
       {
         files.insert(tmp);
       }
     }
 
     const std::vector<cmSourceFile*>& sources = makefile->GetSourceFiles();
-    for (std::vector<cmSourceFile*>::const_iterator sfIt = sources.begin();
-         sfIt != sources.end(); sfIt++) {
-      cmSourceFile* sf = *sfIt;
+    for (cmSourceFile* sf : sources) {
       if (sf->GetPropertyAsBool("GENERATED")) {
         continue;
       }
@@ -278,11 +269,10 @@ std::string cmExtraKateGenerator::GenerateFilesString(
 
   const char* sep = "";
   tmp = "\"list\": [";
-  for (std::set<std::string>::const_iterator it = files.begin();
-       it != files.end(); ++it) {
+  for (std::string const& f : files) {
     tmp += sep;
     tmp += " \"";
-    tmp += *it;
+    tmp += f;
     tmp += "\"";
     sep = ",";
   }
diff --git a/Source/cmExtraKateGenerator.h b/Source/cmExtraKateGenerator.h
index 6b9c7af5c..9716fe750 100644
--- a/Source/cmExtraKateGenerator.h
+++ b/Source/cmExtraKateGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmExtraKateGenerator_h
 #define cmExtraKateGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmExternalMakefileProjectGenerator.h"
 
@@ -22,7 +22,7 @@ public:
 
   static cmExternalMakefileProjectGeneratorFactory* GetFactory();
 
-  void Generate() CM_OVERRIDE;
+  void Generate() override;
 
 private:
   void CreateKateProjectFile(const cmLocalGenerator* lg) const;
diff --git a/Source/cmExtraSublimeTextGenerator.cxx b/Source/cmExtraSublimeTextGenerator.cxx
index 1fd1418de..73a9c8521 100644
--- a/Source/cmExtraSublimeTextGenerator.cxx
+++ b/Source/cmExtraSublimeTextGenerator.cxx
@@ -68,11 +68,9 @@ void cmExtraSublimeTextGenerator::Generate()
     "CMAKE_SUBLIME_TEXT_2_ENV_SETTINGS");
 
   // for each sub project in the project create a sublime text 2 project
-  for (std::map<std::string, std::vector<cmLocalGenerator*> >::const_iterator
-         it = this->GlobalGenerator->GetProjectMap().begin();
-       it != this->GlobalGenerator->GetProjectMap().end(); ++it) {
+  for (auto const& it : this->GlobalGenerator->GetProjectMap()) {
     // create a project file
-    this->CreateProjectFile(it->second);
+    this->CreateProjectFile(it.second);
   }
 }
 
@@ -144,20 +142,19 @@ void cmExtraSublimeTextGenerator::CreateNewProjectFile(
     fout << "\n\t{";
     fout << "\n\t\t" << systemName << ":";
     fout << "\n\t\t{";
-    for (std::vector<std::string>::iterator i = tokens.begin();
-         i != tokens.end(); ++i) {
-      size_t const pos = i->find_first_of('=');
+    for (std::string const& t : tokens) {
+      size_t const pos = t.find_first_of('=');
 
       if (pos != std::string::npos) {
-        std::string varName = i->substr(0, pos);
-        std::string varValue = i->substr(pos + 1);
+        std::string varName = t.substr(0, pos);
+        std::string varValue = t.substr(pos + 1);
 
         fout << "\n\t\t\t\"" << varName << "\":\"" << varValue << "\"";
       } else {
         std::ostringstream e;
         e << "Could not parse Env Vars specified in "
              "\"CMAKE_SUBLIME_TEXT_2_ENV_SETTINGS\""
-          << ", corrupted string " << *i;
+          << ", corrupted string " << t;
         mf->IssueMessage(cmake::FATAL_ERROR, e.str());
       }
     }
@@ -174,28 +171,26 @@ void cmExtraSublimeTextGenerator::AppendAllTargets(
   std::string make = mf->GetRequiredDefinition("CMAKE_MAKE_PROGRAM");
   std::string compiler;
   if (!lgs.empty()) {
-    this->AppendTarget(fout, "all", lgs[0], CM_NULLPTR, make.c_str(), mf,
+    this->AppendTarget(fout, "all", lgs[0], nullptr, make.c_str(), mf,
                        compiler.c_str(), sourceFileFlags, true);
-    this->AppendTarget(fout, "clean", lgs[0], CM_NULLPTR, make.c_str(), mf,
+    this->AppendTarget(fout, "clean", lgs[0], nullptr, make.c_str(), mf,
                        compiler.c_str(), sourceFileFlags, false);
   }
 
   // add all executable and library targets and some of the GLOBAL
   // and UTILITY targets
-  for (std::vector<cmLocalGenerator*>::const_iterator lg = lgs.begin();
-       lg != lgs.end(); lg++) {
-    cmMakefile* makefile = (*lg)->GetMakefile();
-    std::vector<cmGeneratorTarget*> targets = (*lg)->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::iterator ti = targets.begin();
-         ti != targets.end(); ti++) {
-      std::string targetName = (*ti)->GetName();
-      switch ((*ti)->GetType()) {
+  for (cmLocalGenerator* lg : lgs) {
+    cmMakefile* makefile = lg->GetMakefile();
+    const std::vector<cmGeneratorTarget*>& targets = lg->GetGeneratorTargets();
+    for (cmGeneratorTarget* target : targets) {
+      std::string targetName = target->GetName();
+      switch (target->GetType()) {
         case cmStateEnums::GLOBAL_TARGET: {
           // Only add the global targets from CMAKE_BINARY_DIR,
           // not from the subdirs
-          if (strcmp((*lg)->GetCurrentBinaryDirectory(),
-                     (*lg)->GetBinaryDirectory()) == 0) {
-            this->AppendTarget(fout, targetName, *lg, CM_NULLPTR, make.c_str(),
+          if (strcmp(lg->GetCurrentBinaryDirectory(),
+                     lg->GetBinaryDirectory()) == 0) {
+            this->AppendTarget(fout, targetName, lg, nullptr, make.c_str(),
                                makefile, compiler.c_str(), sourceFileFlags,
                                false);
           }
@@ -212,7 +207,7 @@ void cmExtraSublimeTextGenerator::AppendAllTargets(
             break;
           }
 
-          this->AppendTarget(fout, targetName, *lg, CM_NULLPTR, make.c_str(),
+          this->AppendTarget(fout, targetName, lg, nullptr, make.c_str(),
                              makefile, compiler.c_str(), sourceFileFlags,
                              false);
           break;
@@ -221,12 +216,12 @@ void cmExtraSublimeTextGenerator::AppendAllTargets(
         case cmStateEnums::SHARED_LIBRARY:
         case cmStateEnums::MODULE_LIBRARY:
         case cmStateEnums::OBJECT_LIBRARY: {
-          this->AppendTarget(fout, targetName, *lg, *ti, make.c_str(),
+          this->AppendTarget(fout, targetName, lg, target, make.c_str(),
                              makefile, compiler.c_str(), sourceFileFlags,
                              false);
           std::string fastTarget = targetName;
           fastTarget += "/fast";
-          this->AppendTarget(fout, fastTarget, *lg, *ti, make.c_str(),
+          this->AppendTarget(fout, fastTarget, lg, target, make.c_str(),
                              makefile, compiler.c_str(), sourceFileFlags,
                              false);
         } break;
@@ -244,15 +239,11 @@ void cmExtraSublimeTextGenerator::AppendTarget(
   MapSourceFileFlags& sourceFileFlags, bool firstTarget)
 {
 
-  if (target != CM_NULLPTR) {
+  if (target != nullptr) {
     std::vector<cmSourceFile*> sourceFiles;
     target->GetSourceFiles(sourceFiles,
                            makefile->GetSafeDefinition("CMAKE_BUILD_TYPE"));
-    std::vector<cmSourceFile*>::const_iterator sourceFilesEnd =
-      sourceFiles.end();
-    for (std::vector<cmSourceFile*>::const_iterator iter = sourceFiles.begin();
-         iter != sourceFilesEnd; ++iter) {
-      cmSourceFile* sourceFile = *iter;
+    for (cmSourceFile* sourceFile : sourceFiles) {
       MapSourceFileFlags::iterator sourceFileFlagsIter =
         sourceFileFlags.find(sourceFile->GetFullPath());
       if (sourceFileFlagsIter == sourceFileFlags.end()) {
@@ -263,8 +254,9 @@ void cmExtraSublimeTextGenerator::AppendTarget(
             .first;
       }
       std::vector<std::string>& flags = sourceFileFlagsIter->second;
-      std::string flagsString = this->ComputeFlagsForObject(*iter, lg, target);
-      std::string definesString = this->ComputeDefines(*iter, lg, target);
+      std::string flagsString =
+        this->ComputeFlagsForObject(sourceFile, lg, target);
+      std::string definesString = this->ComputeDefines(sourceFile, lg, target);
       flags.clear();
       cmsys::RegularExpression flagRegex;
       // Regular expression to extract compiler flags from a string
@@ -282,7 +274,7 @@ void cmExtraSublimeTextGenerator::AppendTarget(
         if (flagRegex.end() < workString.size()) {
           workString = workString.substr(flagRegex.end());
         } else {
-          workString = "";
+          workString.clear();
         }
       }
     }
diff --git a/Source/cmExtraSublimeTextGenerator.h b/Source/cmExtraSublimeTextGenerator.h
index 9022d3754..7fb304e11 100644
--- a/Source/cmExtraSublimeTextGenerator.h
+++ b/Source/cmExtraSublimeTextGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmExtraSublimeTextGenerator_h
 #define cmExtraSublimeTextGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmExternalMakefileProjectGenerator.h"
 
@@ -24,10 +24,10 @@ class cmExtraSublimeTextGenerator : public cmExternalMakefileProjectGenerator
 {
 public:
   static cmExternalMakefileProjectGeneratorFactory* GetFactory();
-  typedef std::map<std::string, std::vector<std::string> > MapSourceFileFlags;
+  typedef std::map<std::string, std::vector<std::string>> MapSourceFileFlags;
   cmExtraSublimeTextGenerator();
 
-  void Generate() CM_OVERRIDE;
+  void Generate() override;
 
 private:
   void CreateProjectFile(const std::vector<cmLocalGenerator*>& lgs);
diff --git a/Source/cmFLTKWrapUICommand.cxx b/Source/cmFLTKWrapUICommand.cxx
index ff78f52e3..03d1ad1f6 100644
--- a/Source/cmFLTKWrapUICommand.cxx
+++ b/Source/cmFLTKWrapUICommand.cxx
@@ -72,8 +72,8 @@ bool cmFLTKWrapUICommand::InitialPass(std::vector<std::string> const& args,
 
       // Add command for generating the .h and .cxx files
       std::string no_main_dependency;
-      const char* no_comment = CM_NULLPTR;
-      const char* no_working_dir = CM_NULLPTR;
+      const char* no_comment = nullptr;
+      const char* no_working_dir = nullptr;
       this->Makefile->AddCustomCommandToOutput(
         cxxres, depends, no_main_dependency, commandLines, no_comment,
         no_working_dir);
diff --git a/Source/cmFLTKWrapUICommand.h b/Source/cmFLTKWrapUICommand.h
index d8045ab6a..044755e5b 100644
--- a/Source/cmFLTKWrapUICommand.h
+++ b/Source/cmFLTKWrapUICommand.h
@@ -3,7 +3,7 @@
 #ifndef cmFLTKWrapUICommand_h
 #define cmFLTKWrapUICommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -25,14 +25,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmFLTKWrapUICommand; }
+  cmCommand* Clone() override { return new cmFLTKWrapUICommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   /**
    * This is called at the end after all the information
@@ -40,8 +40,8 @@ public:
    * not implement this method.  At this point, reading and
    * writing to the cache can be done.
    */
-  void FinalPass() CM_OVERRIDE;
-  bool HasFinalPass() const CM_OVERRIDE { return true; }
+  void FinalPass() override;
+  bool HasFinalPass() const override { return true; }
 
 private:
   /**
diff --git a/Source/cmFileCommand.cxx b/Source/cmFileCommand.cxx
index 5777fb204..fdd5f0c81 100644
--- a/Source/cmFileCommand.cxx
+++ b/Source/cmFileCommand.cxx
@@ -10,6 +10,7 @@
 #include "cmsys/String.hxx"
 #include <algorithm>
 #include <assert.h>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
@@ -30,7 +31,6 @@
 #include "cmPolicies.h"
 #include "cmSystemTools.h"
 #include "cmTimestamp.h"
-#include "cm_auto_ptr.hxx"
 #include "cm_sys_stat.h"
 #include "cmake.h"
 
@@ -55,14 +55,14 @@ class cmSystemToolsFileTime;
 static mode_t mode_owner_read = S_IREAD;
 static mode_t mode_owner_write = S_IWRITE;
 static mode_t mode_owner_execute = S_IEXEC;
-static mode_t mode_group_read = 0;
-static mode_t mode_group_write = 0;
-static mode_t mode_group_execute = 0;
-static mode_t mode_world_read = 0;
-static mode_t mode_world_write = 0;
-static mode_t mode_world_execute = 0;
-static mode_t mode_setuid = 0;
-static mode_t mode_setgid = 0;
+static mode_t mode_group_read = 040;
+static mode_t mode_group_write = 020;
+static mode_t mode_group_execute = 010;
+static mode_t mode_world_read = 04;
+static mode_t mode_world_write = 02;
+static mode_t mode_world_execute = 01;
+static mode_t mode_setuid = 04000;
+static mode_t mode_setgid = 02000;
 #else
 static mode_t mode_owner_read = S_IRUSR;
 static mode_t mode_owner_write = S_IWUSR;
@@ -269,17 +269,17 @@ bool cmFileCommand::HandleReadCommand(std::vector<std::string> const& args)
   cmCommandArgumentGroup group;
 
   cmCAString readArg(&argHelper, "READ");
-  cmCAString fileNameArg(&argHelper, CM_NULLPTR);
-  cmCAString resultArg(&argHelper, CM_NULLPTR);
+  cmCAString fileNameArg(&argHelper, nullptr);
+  cmCAString resultArg(&argHelper, nullptr);
 
   cmCAString offsetArg(&argHelper, "OFFSET", &group);
   cmCAString limitArg(&argHelper, "LIMIT", &group);
   cmCAEnabler hexOutputArg(&argHelper, "HEX", &group);
-  readArg.Follows(CM_NULLPTR);
+  readArg.Follows(nullptr);
   fileNameArg.Follows(&readArg);
   resultArg.Follows(&fileNameArg);
   group.Follows(&resultArg);
-  argHelper.Parse(&args, CM_NULLPTR);
+  argHelper.Parse(&args, nullptr);
 
   std::string fileName = fileNameArg.GetString();
   if (!cmsys::SystemTools::FileIsFullPath(fileName.c_str())) {
@@ -368,8 +368,8 @@ bool cmFileCommand::HandleHashCommand(std::vector<std::string> const& args)
     return false;
   }
 
-  CM_AUTO_PTR<cmCryptoHash> hash(cmCryptoHash::New(args[0].c_str()));
-  if (hash.get()) {
+  std::unique_ptr<cmCryptoHash> hash(cmCryptoHash::New(args[0].c_str()));
+  if (hash) {
     std::string out = hash->HashFile(args[1]);
     if (!out.empty()) {
       this->Makefile->AddDefinition(args[2], out.c_str());
@@ -656,7 +656,7 @@ bool cmFileCommand::HandleStringsCommand(std::vector<std::string> const& args)
           c = current_str[current_str.size() - 1 - j];
           fin.putback(static_cast<char>(c));
         }
-        current_str = "";
+        current_str.clear();
       }
     }
 
@@ -667,14 +667,14 @@ bool cmFileCommand::HandleStringsCommand(std::vector<std::string> const& args)
       if (s.length() >= minlen && (!have_regex || regex.find(s.c_str()))) {
         output_size += static_cast<int>(s.size()) + 1;
         if (limit_output >= 0 && output_size >= limit_output) {
-          s = "";
+          s.clear();
           break;
         }
         strings.push_back(s);
       }
 
       // Reset the string to empty.
-      s = "";
+      s.clear();
     } else if (current_str.empty()) {
       // A non-string character has been found.  Check if the current
       // string matches the requirements.  We require that the length
@@ -683,14 +683,14 @@ bool cmFileCommand::HandleStringsCommand(std::vector<std::string> const& args)
           (!have_regex || regex.find(s.c_str()))) {
         output_size += static_cast<int>(s.size()) + 1;
         if (limit_output >= 0 && output_size >= limit_output) {
-          s = "";
+          s.clear();
           break;
         }
         strings.push_back(s);
       }
 
       // Reset the string to empty.
-      s = "";
+      s.clear();
     } else {
       s += current_str;
     }
@@ -700,12 +700,12 @@ bool cmFileCommand::HandleStringsCommand(std::vector<std::string> const& args)
       if (s.length() >= minlen && (!have_regex || regex.find(s.c_str()))) {
         output_size += static_cast<int>(s.size()) + 1;
         if (limit_output >= 0 && output_size >= limit_output) {
-          s = "";
+          s.clear();
           break;
         }
         strings.push_back(s);
       }
-      s = "";
+      s.clear();
     }
   }
 
@@ -723,20 +723,18 @@ bool cmFileCommand::HandleStringsCommand(std::vector<std::string> const& args)
   // Encode the result in a CMake list.
   const char* sep = "";
   std::string output;
-  for (std::vector<std::string>::const_iterator si = strings.begin();
-       si != strings.end(); ++si) {
+  for (std::string const& sr : strings) {
     // Separate the strings in the output to make it a list.
     output += sep;
     sep = ";";
 
     // Store the string in the output, but escape semicolons to
     // make sure it is a list.
-    std::string const& sr = *si;
-    for (unsigned int i = 0; i < sr.size(); ++i) {
-      if (sr[i] == ';') {
+    for (char i : sr) {
+      if (i == ';') {
         output += '\\';
       }
-      output += sr[i];
+      output += i;
     }
   }
 
@@ -841,17 +839,16 @@ bool cmFileCommand::HandleGlobCommand(std::vector<std::string> const& args,
 
     if (!globMessages.empty()) {
       bool shouldExit = false;
-      for (cmsys::Glob::GlobMessagesIterator it = globMessages.begin();
-           it != globMessages.end(); ++it) {
-        if (it->type == cmsys::Glob::cyclicRecursion) {
+      for (cmsys::Glob::Message const& globMessage : globMessages) {
+        if (globMessage.type == cmsys::Glob::cyclicRecursion) {
           this->Makefile->IssueMessage(
             cmake::AUTHOR_WARNING,
             "Cyclic recursion detected while globbing for '" + *i + "':\n" +
-              it->content);
+              globMessage.content);
         } else {
           this->Makefile->IssueMessage(
             cmake::FATAL_ERROR, "Error has occurred while globbing for '" +
-              *i + "' - " + it->content);
+              *i + "' - " + globMessage.content);
           shouldExit = true;
         }
       }
@@ -940,9 +937,9 @@ bool cmFileCommand::HandleDifferentCommand(
    */
 
   // Evaluate arguments.
-  const char* file_lhs = CM_NULLPTR;
-  const char* file_rhs = CM_NULLPTR;
-  const char* var = CM_NULLPTR;
+  const char* file_lhs = nullptr;
+  const char* file_rhs = nullptr;
+  const char* var = nullptr;
   enum Doing
   {
     DoingNone,
@@ -997,7 +994,7 @@ struct cmFileCopier
     , MatchlessFiles(true)
     , FilePermissions(0)
     , DirPermissions(0)
-    , CurrentMatchRule(CM_NULLPTR)
+    , CurrentMatchRule(nullptr)
     , UseGivenPermissionsFile(false)
     , UseGivenPermissionsDir(false)
     , UseSourcePermissions(true)
@@ -1060,12 +1057,11 @@ protected:
     // Collect properties from all matching rules.
     bool matched = false;
     MatchProperties result;
-    for (std::vector<MatchRule>::iterator mr = this->MatchRules.begin();
-         mr != this->MatchRules.end(); ++mr) {
-      if (mr->Regex.find(file_to_match)) {
+    for (MatchRule& mr : this->MatchRules) {
+      if (mr.Regex.find(file_to_match)) {
         matched = true;
-        result.Exclude |= mr->Properties.Exclude;
-        result.Permissions |= mr->Properties.Permissions;
+        result.Exclude |= mr.Properties.Exclude;
+        result.Permissions |= mr.Properties.Permissions;
       }
     }
     if (!matched && !this->MatchlessFiles) {
@@ -1076,11 +1072,26 @@ protected:
 
   bool SetPermissions(const char* toFile, mode_t permissions)
   {
-    if (permissions && !cmSystemTools::SetPermissions(toFile, permissions)) {
-      std::ostringstream e;
-      e << this->Name << " cannot set permissions on \"" << toFile << "\"";
-      this->FileCommand->SetError(e.str());
-      return false;
+    if (permissions) {
+#ifdef WIN32
+      if (Makefile->IsOn("CMAKE_CROSSCOMPILING")) {
+        std::string mode_t_adt_filename =
+          std::string(toFile) + ":cmake_mode_t";
+
+        cmsys::ofstream permissionStream(mode_t_adt_filename.c_str());
+
+        if (permissionStream) {
+          permissionStream << std::oct << permissions << std::endl;
+        }
+      }
+#endif
+
+      if (!cmSystemTools::SetPermissions(toFile, permissions)) {
+        std::ostringstream e;
+        e << this->Name << " cannot set permissions on \"" << toFile << "\"";
+        this->FileCommand->SetError(e.str());
+        return false;
+      }
     }
     return true;
   }
@@ -1406,23 +1417,22 @@ bool cmFileCopier::Run(std::vector<std::string> const& args)
     return false;
   }
 
-  for (std::vector<std::string>::const_iterator i = this->Files.begin();
-       i != this->Files.end(); ++i) {
+  for (std::string const& f : this->Files) {
     std::string file;
-    if (!i->empty() && !cmSystemTools::FileIsFullPath(*i)) {
+    if (!f.empty() && !cmSystemTools::FileIsFullPath(f)) {
       if (!this->FilesFromDir.empty()) {
         file = this->FilesFromDir;
       } else {
         file = this->Makefile->GetCurrentSourceDirectory();
       }
       file += "/";
-      file += *i;
+      file += f;
     } else if (!this->FilesFromDir.empty()) {
       this->FileCommand->SetError("option FILES_FROM_DIR requires all files "
                                   "to be specified as relative paths.");
       return false;
     } else {
-      file = *i;
+      file = f;
     }
 
     // Split the input file into its directory and name components.
@@ -1435,7 +1445,7 @@ bool cmFileCopier::Run(std::vector<std::string> const& args)
     // Compute the full path to the destination file.
     std::string toFile = this->Destination;
     if (!this->FilesFromDir.empty()) {
-      std::string dir = cmSystemTools::GetFilenamePath(*i);
+      std::string dir = cmSystemTools::GetFilenamePath(f);
       if (!dir.empty()) {
         toFile += "/";
         toFile += dir;
@@ -1696,7 +1706,7 @@ struct cmFileInstaller : public cmFileCopier
     this->Manifest =
       this->Makefile->GetSafeDefinition("CMAKE_INSTALL_MANIFEST_FILES");
   }
-  ~cmFileInstaller() CM_OVERRIDE
+  ~cmFileInstaller() override
   {
     // Save the updated install manifest.
     this->Makefile->AddDefinition("CMAKE_INSTALL_MANIFEST_FILES",
@@ -1721,12 +1731,12 @@ protected:
     this->Manifest += file.substr(this->DestDirLength);
   }
 
-  std::string const& ToName(std::string const& fromName) CM_OVERRIDE
+  std::string const& ToName(std::string const& fromName) override
   {
     return this->Rename.empty() ? fromName : this->Rename;
   }
 
-  void ReportCopy(const char* toFile, Type type, bool copy) CM_OVERRIDE
+  void ReportCopy(const char* toFile, Type type, bool copy) override
   {
     if (!this->MessageNever && (copy || !this->MessageLazy)) {
       std::string message = (copy ? "Installing: " : "Up-to-date: ");
@@ -1738,11 +1748,11 @@ protected:
       this->ManifestAppend(toFile);
     }
   }
-  bool ReportMissing(const char* fromFile) CM_OVERRIDE
+  bool ReportMissing(const char* fromFile) override
   {
     return (this->Optional || this->cmFileCopier::ReportMissing(fromFile));
   }
-  bool Install(const char* fromFile, const char* toFile) CM_OVERRIDE
+  bool Install(const char* fromFile, const char* toFile) override
   {
     // Support installing from empty source to make a directory.
     if (this->InstallType == cmInstallType_DIRECTORY && !*fromFile) {
@@ -1751,16 +1761,16 @@ protected:
     return this->cmFileCopier::Install(fromFile, toFile);
   }
 
-  bool Parse(std::vector<std::string> const& args) CM_OVERRIDE;
+  bool Parse(std::vector<std::string> const& args) override;
   enum
   {
     DoingType = DoingLast1,
     DoingRename,
     DoingLast2
   };
-  bool CheckKeyword(std::string const& arg) CM_OVERRIDE;
-  bool CheckValue(std::string const& arg) CM_OVERRIDE;
-  void DefaultFilePermissions() CM_OVERRIDE
+  bool CheckKeyword(std::string const& arg) override;
+  bool CheckValue(std::string const& arg) override;
+  void DefaultFilePermissions() override
   {
     this->cmFileCopier::DefaultFilePermissions();
     // Add execute permissions based on the target type.
@@ -2028,9 +2038,9 @@ bool cmFileCommand::HandleRPathChangeCommand(
   std::vector<std::string> const& args)
 {
   // Evaluate arguments.
-  const char* file = CM_NULLPTR;
-  const char* oldRPath = CM_NULLPTR;
-  const char* newRPath = CM_NULLPTR;
+  const char* file = nullptr;
+  const char* oldRPath = nullptr;
+  const char* newRPath = nullptr;
   enum Doing
   {
     DoingNone,
@@ -2118,7 +2128,7 @@ bool cmFileCommand::HandleRPathRemoveCommand(
   std::vector<std::string> const& args)
 {
   // Evaluate arguments.
-  const char* file = CM_NULLPTR;
+  const char* file = nullptr;
   enum Doing
   {
     DoingNone,
@@ -2182,8 +2192,8 @@ bool cmFileCommand::HandleRPathCheckCommand(
   std::vector<std::string> const& args)
 {
   // Evaluate arguments.
-  const char* file = CM_NULLPTR;
-  const char* rpath = CM_NULLPTR;
+  const char* file = nullptr;
+  const char* rpath = nullptr;
   enum Doing
   {
     DoingNone,
@@ -2241,16 +2251,16 @@ bool cmFileCommand::HandleReadElfCommand(std::vector<std::string> const& args)
   cmCommandArgumentGroup group;
 
   cmCAString readArg(&argHelper, "READ_ELF");
-  cmCAString fileNameArg(&argHelper, CM_NULLPTR);
+  cmCAString fileNameArg(&argHelper, nullptr);
 
   cmCAString rpathArg(&argHelper, "RPATH", &group);
   cmCAString runpathArg(&argHelper, "RUNPATH", &group);
   cmCAString errorArg(&argHelper, "CAPTURE_ERROR", &group);
 
-  readArg.Follows(CM_NULLPTR);
+  readArg.Follows(nullptr);
   fileNameArg.Follows(&readArg);
   group.Follows(&fileNameArg);
-  argHelper.Parse(&args, CM_NULLPTR);
+  argHelper.Parse(&args, nullptr);
 
   if (!cmSystemTools::FileExists(fileNameArg.GetString(), true)) {
     std::ostringstream e;
@@ -2284,10 +2294,9 @@ bool cmFileCommand::HandleReadElfCommand(std::vector<std::string> const& args)
   if (errorArg.GetString().empty()) {
     this->SetError(error);
     return false;
-  } else {
-    this->Makefile->AddDefinition(errorArg.GetString(), error.c_str());
-    return true;
   }
+  this->Makefile->AddDefinition(errorArg.GetString(), error.c_str());
+  return true;
 #endif
 }
 
@@ -2439,7 +2448,7 @@ namespace {
 
 size_t cmWriteToFileCallback(void* ptr, size_t size, size_t nmemb, void* data)
 {
-  int realsize = (int)(size * nmemb);
+  int realsize = static_cast<int>(size * nmemb);
   cmsys::ofstream* fout = static_cast<cmsys::ofstream*>(data);
   const char* chPtr = static_cast<char*>(ptr);
   fout->write(chPtr, realsize);
@@ -2449,7 +2458,7 @@ size_t cmWriteToFileCallback(void* ptr, size_t size, size_t nmemb, void* data)
 size_t cmWriteToMemoryCallback(void* ptr, size_t size, size_t nmemb,
                                void* data)
 {
-  int realsize = (int)(size * nmemb);
+  int realsize = static_cast<int>(size * nmemb);
   cmFileCommandVectorOfChar* vec =
     static_cast<cmFileCommandVectorOfChar*>(data);
   const char* chPtr = static_cast<char*>(ptr);
@@ -2581,7 +2590,7 @@ public:
     }
   }
 
-  void release() { this->Easy = CM_NULLPTR; }
+  void release() { this->Easy = nullptr; }
 
 private:
   ::CURL* Easy;
@@ -2619,7 +2628,7 @@ bool cmFileCommand::HandleDownloadCommand(std::vector<std::string> const& args)
   const char* cainfo = this->Makefile->GetDefinition("CMAKE_TLS_CAINFO");
   std::string expectedHash;
   std::string hashMatchMSG;
-  CM_AUTO_PTR<cmCryptoHash> hash;
+  std::unique_ptr<cmCryptoHash> hash;
   bool showProgress = false;
   std::string userpwd;
 
@@ -2678,8 +2687,7 @@ bool cmFileCommand::HandleDownloadCommand(std::vector<std::string> const& args)
         this->SetError("DOWNLOAD missing sum value for EXPECTED_MD5.");
         return false;
       }
-      hash =
-        CM_AUTO_PTR<cmCryptoHash>(new cmCryptoHash(cmCryptoHash::AlgoMD5));
+      hash = cm::make_unique<cmCryptoHash>(cmCryptoHash::AlgoMD5);
       hashMatchMSG = "MD5 sum";
       expectedHash = cmSystemTools::LowerCase(*i);
     } else if (*i == "SHOW_PROGRESS") {
@@ -2700,7 +2708,7 @@ bool cmFileCommand::HandleDownloadCommand(std::vector<std::string> const& args)
       }
       std::string algo = i->substr(0, pos);
       expectedHash = cmSystemTools::LowerCase(i->substr(pos + 1));
-      hash = CM_AUTO_PTR<cmCryptoHash>(cmCryptoHash::New(algo.c_str()));
+      hash = std::unique_ptr<cmCryptoHash>(cmCryptoHash::New(algo.c_str()));
       if (!hash.get()) {
         std::string err = "DOWNLOAD EXPECTED_HASH given unknown ALGO: ";
         err += algo;
@@ -2743,7 +2751,7 @@ bool cmFileCommand::HandleDownloadCommand(std::vector<std::string> const& args)
       msg += "\"";
       if (!statusVar.empty()) {
         std::ostringstream result;
-        result << (int)0 << ";\"" << msg;
+        result << 0 << ";\"" << msg;
         this->Makefile->AddDefinition(statusVar, result.str().c_str());
       }
       return true;
@@ -2816,10 +2824,10 @@ bool cmFileCommand::HandleDownloadCommand(std::vector<std::string> const& args)
 
   cmFileCommandVectorOfChar chunkDebug;
 
-  res = ::curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void*)&fout);
+  res = ::curl_easy_setopt(curl, CURLOPT_WRITEDATA, &fout);
   check_curl_result(res, "DOWNLOAD cannot set write data: ");
 
-  res = ::curl_easy_setopt(curl, CURLOPT_DEBUGDATA, (void*)&chunkDebug);
+  res = ::curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &chunkDebug);
   check_curl_result(res, "DOWNLOAD cannot set debug data: ");
 
   res = ::curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
@@ -2866,10 +2874,9 @@ bool cmFileCommand::HandleDownloadCommand(std::vector<std::string> const& args)
     check_curl_result(res, "DOWNLOAD cannot set user password: ");
   }
 
-  struct curl_slist* headers = CM_NULLPTR;
-  for (std::vector<std::string>::const_iterator h = curl_headers.begin();
-       h != curl_headers.end(); ++h) {
-    headers = ::curl_slist_append(headers, h->c_str());
+  struct curl_slist* headers = nullptr;
+  for (std::string const& h : curl_headers) {
+    headers = ::curl_slist_append(headers, h.c_str());
   }
   ::curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
 
@@ -2883,7 +2890,8 @@ bool cmFileCommand::HandleDownloadCommand(std::vector<std::string> const& args)
 
   if (!statusVar.empty()) {
     std::ostringstream result;
-    result << (int)res << ";\"" << ::curl_easy_strerror(res) << "\"";
+    result << static_cast<int>(res) << ";\"" << ::curl_easy_strerror(res)
+           << "\"";
     this->Makefile->AddDefinition(statusVar, result.str().c_str());
   }
 
@@ -2896,7 +2904,7 @@ bool cmFileCommand::HandleDownloadCommand(std::vector<std::string> const& args)
 
   // Verify MD5 sum if requested:
   //
-  if (hash.get()) {
+  if (hash) {
     std::string actualHash = hash->HashFile(file);
     if (actualHash.empty()) {
       this->SetError("DOWNLOAD cannot compute hash on downloaded file");
@@ -2909,7 +2917,7 @@ bool cmFileCommand::HandleDownloadCommand(std::vector<std::string> const& args)
           << "  for file: [" << file << "]" << std::endl
           << "    expected hash: [" << expectedHash << "]" << std::endl
           << "      actual hash: [" << actualHash << "]" << std::endl
-          << "           status: [" << (int)res << ";\""
+          << "           status: [" << static_cast<int>(res) << ";\""
           << ::curl_easy_strerror(res) << "\"]" << std::endl;
 
       if (!statusVar.empty() && res == 0) {
@@ -3065,10 +3073,10 @@ bool cmFileCommand::HandleUploadCommand(std::vector<std::string> const& args)
   cmFileCommandVectorOfChar chunkResponse;
   cmFileCommandVectorOfChar chunkDebug;
 
-  res = ::curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void*)&chunkResponse);
+  res = ::curl_easy_setopt(curl, CURLOPT_WRITEDATA, &chunkResponse);
   check_curl_result(res, "UPLOAD cannot set write data: ");
 
-  res = ::curl_easy_setopt(curl, CURLOPT_DEBUGDATA, (void*)&chunkDebug);
+  res = ::curl_easy_setopt(curl, CURLOPT_DEBUGDATA, &chunkDebug);
   check_curl_result(res, "UPLOAD cannot set debug data: ");
 
   res = ::curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);
@@ -3124,10 +3132,9 @@ bool cmFileCommand::HandleUploadCommand(std::vector<std::string> const& args)
     check_curl_result(res, "UPLOAD cannot set user password: ");
   }
 
-  struct curl_slist* headers = CM_NULLPTR;
-  for (std::vector<std::string>::const_iterator h = curl_headers.begin();
-       h != curl_headers.end(); ++h) {
-    headers = ::curl_slist_append(headers, h->c_str());
+  struct curl_slist* headers = nullptr;
+  for (std::string const& h : curl_headers) {
+    headers = ::curl_slist_append(headers, h.c_str());
   }
   ::curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
 
@@ -3141,14 +3148,15 @@ bool cmFileCommand::HandleUploadCommand(std::vector<std::string> const& args)
 
   if (!statusVar.empty()) {
     std::ostringstream result;
-    result << (int)res << ";\"" << ::curl_easy_strerror(res) << "\"";
+    result << static_cast<int>(res) << ";\"" << ::curl_easy_strerror(res)
+           << "\"";
     this->Makefile->AddDefinition(statusVar, result.str().c_str());
   }
 
   ::curl_global_cleanup();
 
   fclose(fin);
-  fin = CM_NULLPTR;
+  fin = nullptr;
 
   if (!logVar.empty()) {
     std::string log;
@@ -3185,15 +3193,15 @@ void cmFileCommand::AddEvaluationFile(const std::string& inputName,
   cmListFileBacktrace lfbt = this->Makefile->GetBacktrace();
 
   cmGeneratorExpression outputGe(lfbt);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> outputCge =
+  std::unique_ptr<cmCompiledGeneratorExpression> outputCge =
     outputGe.Parse(outputExpr);
 
   cmGeneratorExpression conditionGe(lfbt);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> conditionCge =
+  std::unique_ptr<cmCompiledGeneratorExpression> conditionCge =
     conditionGe.Parse(condition);
 
-  this->Makefile->AddEvaluationFile(inputName, outputCge, conditionCge,
-                                    inputIsContent);
+  this->Makefile->AddEvaluationFile(inputName, std::move(outputCge),
+                                    std::move(conditionCge), inputIsContent);
 }
 
 bool cmFileCommand::HandleGenerateCommand(std::vector<std::string> const& args)
diff --git a/Source/cmFileCommand.h b/Source/cmFileCommand.h
index d09ef42f1..17269f3f9 100644
--- a/Source/cmFileCommand.h
+++ b/Source/cmFileCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmFileCommand_h
 #define cmFileCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -22,14 +22,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmFileCommand; }
+  cmCommand* Clone() override { return new cmFileCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 protected:
   bool HandleRename(std::vector<std::string> const& args);
diff --git a/Source/cmFileLock.cxx b/Source/cmFileLock.cxx
index 786d6c63f..f309241a6 100644
--- a/Source/cmFileLock.cxx
+++ b/Source/cmFileLock.cxx
@@ -42,7 +42,7 @@ cmFileLockResult cmFileLock::Lock(const std::string& filename,
   }
 
   if (!result.IsOk()) {
-    this->Filename = "";
+    this->Filename.clear();
   }
 
   return result;
diff --git a/Source/cmFileLock.h b/Source/cmFileLock.h
index ccef50816..c9ab0dbcb 100644
--- a/Source/cmFileLock.h
+++ b/Source/cmFileLock.h
@@ -3,7 +3,7 @@
 #ifndef cmFileLock_h
 #define cmFileLock_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
diff --git a/Source/cmFileLockPool.cxx b/Source/cmFileLockPool.cxx
index 7b1564c34..5dc9243a1 100644
--- a/Source/cmFileLockPool.cxx
+++ b/Source/cmFileLockPool.cxx
@@ -75,16 +75,15 @@ cmFileLockResult cmFileLockPool::LockProcessScope(const std::string& filename,
 
 cmFileLockResult cmFileLockPool::Release(const std::string& filename)
 {
-  for (It i = this->FunctionScopes.begin(); i != this->FunctionScopes.end();
-       ++i) {
-    const cmFileLockResult result = (*i)->Release(filename);
+  for (auto& funcScope : this->FunctionScopes) {
+    const cmFileLockResult result = funcScope->Release(filename);
     if (!result.IsOk()) {
       return result;
     }
   }
 
-  for (It i = this->FileScopes.begin(); i != this->FileScopes.end(); ++i) {
-    const cmFileLockResult result = (*i)->Release(filename);
+  for (auto& fileScope : this->FileScopes) {
+    const cmFileLockResult result = fileScope->Release(filename);
     if (!result.IsOk()) {
       return result;
     }
@@ -95,16 +94,15 @@ cmFileLockResult cmFileLockPool::Release(const std::string& filename)
 
 bool cmFileLockPool::IsAlreadyLocked(const std::string& filename) const
 {
-  for (CIt i = this->FunctionScopes.begin(); i != this->FunctionScopes.end();
-       ++i) {
-    const bool result = (*i)->IsAlreadyLocked(filename);
+  for (auto const& funcScope : this->FunctionScopes) {
+    const bool result = funcScope->IsAlreadyLocked(filename);
     if (result) {
       return true;
     }
   }
 
-  for (CIt i = this->FileScopes.begin(); i != this->FileScopes.end(); ++i) {
-    const bool result = (*i)->IsAlreadyLocked(filename);
+  for (auto const& fileScope : this->FileScopes) {
+    const bool result = fileScope->IsAlreadyLocked(filename);
     if (result) {
       return true;
     }
@@ -138,9 +136,9 @@ cmFileLockResult cmFileLockPool::ScopePool::Lock(const std::string& filename,
 cmFileLockResult cmFileLockPool::ScopePool::Release(
   const std::string& filename)
 {
-  for (It i = this->Locks.begin(); i != this->Locks.end(); ++i) {
-    if ((*i)->IsLocked(filename)) {
-      return (*i)->Release();
+  for (auto& lock : this->Locks) {
+    if (lock->IsLocked(filename)) {
+      return lock->Release();
     }
   }
   return cmFileLockResult::MakeOk();
@@ -149,8 +147,8 @@ cmFileLockResult cmFileLockPool::ScopePool::Release(
 bool cmFileLockPool::ScopePool::IsAlreadyLocked(
   const std::string& filename) const
 {
-  for (CIt i = this->Locks.begin(); i != this->Locks.end(); ++i) {
-    if ((*i)->IsLocked(filename)) {
+  for (auto const& lock : this->Locks) {
+    if (lock->IsLocked(filename)) {
       return true;
     }
   }
diff --git a/Source/cmFileLockPool.h b/Source/cmFileLockPool.h
index c96a8c2f8..af982707e 100644
--- a/Source/cmFileLockPool.h
+++ b/Source/cmFileLockPool.h
@@ -3,7 +3,7 @@
 #ifndef cmFileLockPool_h
 #define cmFileLockPool_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
diff --git a/Source/cmFileLockResult.cxx b/Source/cmFileLockResult.cxx
index a040705e8..9ca5d8a06 100644
--- a/Source/cmFileLockResult.cxx
+++ b/Source/cmFileLockResult.cxx
@@ -5,6 +5,7 @@
 #include <errno.h>
 #include <string.h>
 
+#define WINMSG_BUF_LEN (1024)
 cmFileLockResult cmFileLockResult::MakeOk()
 {
   return cmFileLockResult(OK, 0);
@@ -53,18 +54,12 @@ std::string cmFileLockResult::GetOutputMessage() const
     case SYSTEM:
 #if defined(_WIN32)
     {
-      char* errorText = NULL;
-
-      // http://stackoverflow.com/a/455533/2288008
-      DWORD flags = FORMAT_MESSAGE_FROM_SYSTEM |
-        FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_IGNORE_INSERTS;
-      ::FormatMessageA(flags, NULL, this->ErrorValue,
-                       MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
-                       (LPSTR)&errorText, 0, NULL);
-
-      if (errorText != NULL) {
-        const std::string message = errorText;
-        ::LocalFree(errorText);
+      char winmsg[WINMSG_BUF_LEN];
+      DWORD flags = FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS;
+      if (FormatMessageA(flags, NULL, this->ErrorValue,
+                         MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+                         (LPSTR)winmsg, WINMSG_BUF_LEN, NULL)) {
+        const std::string message = winmsg;
         return message;
       } else {
         return "Internal error (FormatMessageA failed)";
diff --git a/Source/cmFileMonitor.cxx b/Source/cmFileMonitor.cxx
index 80275357c..04a3c0ef7 100644
--- a/Source/cmFileMonitor.cxx
+++ b/Source/cmFileMonitor.cxx
@@ -49,8 +49,8 @@ public:
                int status) const final
   {
     if (pathSegment.empty()) {
-      for (const auto& i : this->Children) {
-        i.second->Trigger(std::string(), events, status);
+      for (auto const& child : this->Children) {
+        child.second->Trigger(std::string(), events, status);
       }
     } else {
       const auto i = this->Children.find(pathSegment);
@@ -62,24 +62,24 @@ public:
 
   void StartWatching() override
   {
-    for (const auto& i : this->Children) {
-      i.second->StartWatching();
+    for (auto const& child : this->Children) {
+      child.second->StartWatching();
     }
   }
 
   void StopWatching() override
   {
-    for (const auto& i : this->Children) {
-      i.second->StopWatching();
+    for (auto const& child : this->Children) {
+      child.second->StopWatching();
     }
   }
 
   std::vector<std::string> WatchedFiles() const final
   {
     std::vector<std::string> result;
-    for (const auto& i : this->Children) {
-      for (const auto& j : i.second->WatchedFiles()) {
-        result.push_back(j);
+    for (auto const& child : this->Children) {
+      for (std::string const& f : child.second->WatchedFiles()) {
+        result.push_back(f);
       }
     }
     return result;
@@ -88,9 +88,9 @@ public:
   std::vector<std::string> WatchedDirectories() const override
   {
     std::vector<std::string> result;
-    for (const auto& i : this->Children) {
-      for (const auto& j : i.second->WatchedDirectories()) {
-        result.push_back(j);
+    for (auto const& child : this->Children) {
+      for (std::string const& dir : child.second->WatchedDirectories()) {
+        result.push_back(dir);
       }
     }
     return result;
@@ -171,7 +171,9 @@ public:
   {
     if (this->Handle) {
       uv_fs_event_stop(this->Handle);
-      uv_close(reinterpret_cast<uv_handle_t*>(this->Handle), &on_fs_close);
+      if (!uv_is_closing(reinterpret_cast<uv_handle_t*>(this->Handle))) {
+        uv_close(reinterpret_cast<uv_handle_t*>(this->Handle), &on_fs_close);
+      }
       this->Handle = nullptr;
     }
     cmVirtualDirectoryWatcher::StopWatching();
@@ -182,8 +184,9 @@ public:
   std::vector<std::string> WatchedDirectories() const override
   {
     std::vector<std::string> result = { Path() };
-    for (const auto& j : cmVirtualDirectoryWatcher::WatchedDirectories()) {
-      result.push_back(j);
+    for (std::string const& dir :
+         cmVirtualDirectoryWatcher::WatchedDirectories()) {
+      result.push_back(dir);
     }
     return result;
   }
@@ -265,7 +268,7 @@ public:
     static_cast<void>(ps);
 
     const std::string path = this->Path();
-    for (const auto& cb : this->CbList) {
+    for (cmFileMonitor::Callback const& cb : this->CbList) {
       cb(path, events, status);
     }
   }
@@ -309,7 +312,7 @@ cmFileMonitor::~cmFileMonitor()
 void cmFileMonitor::MonitorPaths(const std::vector<std::string>& paths,
                                  Callback const& cb)
 {
-  for (const auto& p : paths) {
+  for (std::string const& p : paths) {
     std::vector<std::string> pathSegments;
     cmsys::SystemTools::SplitPath(p, pathSegments, true);
 
diff --git a/Source/cmFileMonitor.h b/Source/cmFileMonitor.h
index d7ec92a17..632e7514f 100644
--- a/Source/cmFileMonitor.h
+++ b/Source/cmFileMonitor.h
@@ -2,7 +2,7 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #pragma once
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <functional>
 #include <string>
diff --git a/Source/cmFilePathChecksum.cxx b/Source/cmFilePathChecksum.cxx
index 62f52e590..f9afeefcd 100644
--- a/Source/cmFilePathChecksum.cxx
+++ b/Source/cmFilePathChecksum.cxx
@@ -13,10 +13,10 @@ cmFilePathChecksum::cmFilePathChecksum()
 {
 }
 
-cmFilePathChecksum::cmFilePathChecksum(const std::string& currentSrcDir,
-                                       const std::string& currentBinDir,
-                                       const std::string& projectSrcDir,
-                                       const std::string& projectBinDir)
+cmFilePathChecksum::cmFilePathChecksum(std::string const& currentSrcDir,
+                                       std::string const& currentBinDir,
+                                       std::string const& projectSrcDir,
+                                       std::string const& projectBinDir)
 {
   setupParentDirs(currentSrcDir, currentBinDir, projectSrcDir, projectBinDir);
 }
@@ -29,36 +29,35 @@ cmFilePathChecksum::cmFilePathChecksum(cmMakefile* makefile)
                   makefile->GetHomeOutputDirectory());
 }
 
-void cmFilePathChecksum::setupParentDirs(const std::string& currentSrcDir,
-                                         const std::string& currentBinDir,
-                                         const std::string& projectSrcDir,
-                                         const std::string& projectBinDir)
+void cmFilePathChecksum::setupParentDirs(std::string const& currentSrcDir,
+                                         std::string const& currentBinDir,
+                                         std::string const& projectSrcDir,
+                                         std::string const& projectBinDir)
 {
-  parentDirs[0].first = cmsys::SystemTools::GetRealPath(currentSrcDir);
-  parentDirs[1].first = cmsys::SystemTools::GetRealPath(currentBinDir);
-  parentDirs[2].first = cmsys::SystemTools::GetRealPath(projectSrcDir);
-  parentDirs[3].first = cmsys::SystemTools::GetRealPath(projectBinDir);
+  this->parentDirs[0].first = cmsys::SystemTools::GetRealPath(currentSrcDir);
+  this->parentDirs[1].first = cmsys::SystemTools::GetRealPath(currentBinDir);
+  this->parentDirs[2].first = cmsys::SystemTools::GetRealPath(projectSrcDir);
+  this->parentDirs[3].first = cmsys::SystemTools::GetRealPath(projectBinDir);
 
-  parentDirs[0].second = "CurrentSource";
-  parentDirs[1].second = "CurrentBinary";
-  parentDirs[2].second = "ProjectSource";
-  parentDirs[3].second = "ProjectBinary";
+  this->parentDirs[0].second = "CurrentSource";
+  this->parentDirs[1].second = "CurrentBinary";
+  this->parentDirs[2].second = "ProjectSource";
+  this->parentDirs[3].second = "ProjectBinary";
 }
 
-std::string cmFilePathChecksum::get(const std::string& filePath) const
+std::string cmFilePathChecksum::get(std::string const& filePath) const
 {
   std::string relPath;
   std::string relSeed;
   {
-    const std::string fileReal = cmsys::SystemTools::GetRealPath(filePath);
+    std::string const fileReal = cmsys::SystemTools::GetRealPath(filePath);
     std::string parentDir;
     // Find closest project parent directory
-    for (size_t ii = 0; ii != numParentDirs; ++ii) {
-      const std::string& pDir = parentDirs[ii].first;
-      if (!pDir.empty() &&
-          cmsys::SystemTools::IsSubDirectory(fileReal, pDir)) {
-        relSeed = parentDirs[ii].second;
-        parentDir = pDir;
+    for (auto const& pDir : this->parentDirs) {
+      if (!pDir.first.empty() &&
+          cmsys::SystemTools::IsSubDirectory(fileReal, pDir.first)) {
+        parentDir = pDir.first;
+        relSeed = pDir.second;
         break;
       }
     }
@@ -77,11 +76,11 @@ std::string cmFilePathChecksum::get(const std::string& filePath) const
     cmCryptoHash(cmCryptoHash::AlgoSHA256).ByteHashString(relSeed + relPath);
 
   // Convert binary checksum to string
-  return cmBase32Encoder().encodeString(&hashBytes[0], hashBytes.size(),
+  return cmBase32Encoder().encodeString(&hashBytes.front(), hashBytes.size(),
                                         false);
 }
 
-std::string cmFilePathChecksum::getPart(const std::string& filePath,
+std::string cmFilePathChecksum::getPart(std::string const& filePath,
                                         size_t length) const
 {
   return get(filePath).substr(0, length);
diff --git a/Source/cmFilePathChecksum.h b/Source/cmFilePathChecksum.h
index 9d570eb4d..48b5da0f0 100644
--- a/Source/cmFilePathChecksum.h
+++ b/Source/cmFilePathChecksum.h
@@ -5,6 +5,7 @@
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
+#include <array>
 #include <stddef.h>
 #include <string>
 #include <utility>
@@ -29,37 +30,35 @@ public:
   cmFilePathChecksum();
 
   /// @brief Initilizes the parent directories manually
-  cmFilePathChecksum(const std::string& currentSrcDir,
-                     const std::string& currentBinDir,
-                     const std::string& projectSrcDir,
-                     const std::string& projectBinDir);
+  cmFilePathChecksum(std::string const& currentSrcDir,
+                     std::string const& currentBinDir,
+                     std::string const& projectSrcDir,
+                     std::string const& projectBinDir);
 
   /// @brief Initilizes the parent directories from a makefile
   cmFilePathChecksum(cmMakefile* makefile);
 
   /// @brief Allows parent directories setup after construction
   ///
-  void setupParentDirs(const std::string& currentSrcDir,
-                       const std::string& currentBinDir,
-                       const std::string& projectSrcDir,
-                       const std::string& projectBinDir);
+  void setupParentDirs(std::string const& currentSrcDir,
+                       std::string const& currentBinDir,
+                       std::string const& projectSrcDir,
+                       std::string const& projectBinDir);
 
   /* @brief Calculates the path checksum for the parent directory of a file
    *
    */
-  std::string get(const std::string& filePath) const;
+  std::string get(std::string const& filePath) const;
 
   /* @brief Same as get() but returns only the first length characters
    *
    */
-  std::string getPart(const std::string& filePath,
+  std::string getPart(std::string const& filePath,
                       size_t length = partLengthDefault) const;
 
 private:
-  /// Size of the parent directory list
-  static const size_t numParentDirs = 4;
   /// List of (directory name, seed name) pairs
-  std::pair<std::string, std::string> parentDirs[numParentDirs];
+  std::array<std::pair<std::string, std::string>, 4> parentDirs;
 };
 
 #endif
diff --git a/Source/cmFileTimeComparison.cxx b/Source/cmFileTimeComparison.cxx
index f591a8dc7..622c15e2c 100644
--- a/Source/cmFileTimeComparison.cxx
+++ b/Source/cmFileTimeComparison.cxx
@@ -4,10 +4,9 @@
 
 #include <string>
 #include <time.h>
+#include <unordered_map>
 #include <utility>
 
-#include "cm_unordered_map.hxx"
-
 // Use a platform-specific API to get file times efficiently.
 #if !defined(_WIN32) || defined(__CYGWIN__)
 #include "cm_sys_stat.h"
@@ -27,7 +26,7 @@ public:
   bool FileTimesDiffer(const char* f1, const char* f2);
 
 private:
-  typedef CM_UNORDERED_MAP<std::string, cmFileTimeComparison_Type>
+  typedef std::unordered_map<std::string, cmFileTimeComparison_Type>
     FileStatsMap;
   FileStatsMap Files;
 
@@ -117,18 +116,22 @@ int cmFileTimeComparisonInternal::Compare(cmFileTimeComparison_Type* s1,
   // Compare using nanosecond resolution.
   if (s1->st_mtimespec.tv_sec < s2->st_mtimespec.tv_sec) {
     return -1;
-  } else if (s1->st_mtimespec.tv_sec > s2->st_mtimespec.tv_sec) {
+  }
+  if (s1->st_mtimespec.tv_sec > s2->st_mtimespec.tv_sec) {
     return 1;
-  } else if (s1->st_mtimespec.tv_nsec < s2->st_mtimespec.tv_nsec) {
+  }
+  if (s1->st_mtimespec.tv_nsec < s2->st_mtimespec.tv_nsec) {
     return -1;
-  } else if (s1->st_mtimespec.tv_nsec > s2->st_mtimespec.tv_nsec) {
+  }
+  if (s1->st_mtimespec.tv_nsec > s2->st_mtimespec.tv_nsec) {
     return 1;
   }
 #else
   // Compare using 1 second resolution.
   if (s1->st_mtime < s2->st_mtime) {
     return -1;
-  } else if (s1->st_mtime > s2->st_mtime) {
+  }
+  if (s1->st_mtime > s2->st_mtime) {
     return 1;
   }
 #endif
@@ -163,20 +166,20 @@ bool cmFileTimeComparisonInternal::TimesDiffer(cmFileTimeComparison_Type* s1,
   long long t2 = s2->st_mtimespec.tv_sec * bil + s2->st_mtimespec.tv_nsec;
   if (t1 < t2) {
     return (t2 - t1) >= bil;
-  } else if (t2 < t1) {
+  }
+  if (t2 < t1) {
     return (t1 - t2) >= bil;
-  } else {
-    return false;
   }
+  return false;
 #else
   // Times are integers in units of 1s.
   if (s1->st_mtime < s2->st_mtime) {
     return (s2->st_mtime - s1->st_mtime) >= 1;
-  } else if (s1->st_mtime > s2->st_mtime) {
+  }
+  if (s1->st_mtime > s2->st_mtime) {
     return (s1->st_mtime - s2->st_mtime) >= 1;
-  } else {
-    return false;
   }
+  return false;
 #endif
 #else
   // Times are integers in units of 100ns.
diff --git a/Source/cmFindBase.cxx b/Source/cmFindBase.cxx
index 10c6fe46f..417cdd25c 100644
--- a/Source/cmFindBase.cxx
+++ b/Source/cmFindBase.cxx
@@ -2,7 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmFindBase.h"
 
-#include "cmConfigure.h"
 #include <deque>
 #include <iostream>
 #include <iterator>
@@ -281,10 +280,8 @@ void cmFindBase::FillUserHintsPath()
 {
   cmSearchPath& paths = this->LabeledPaths[PathLabel::Hints];
 
-  for (std::vector<std::string>::const_iterator p =
-         this->UserHintsArgs.begin();
-       p != this->UserHintsArgs.end(); ++p) {
-    paths.AddUserPath(*p);
+  for (std::string const& p : this->UserHintsArgs) {
+    paths.AddUserPath(p);
   }
   paths.AddSuffixes(this->SearchPathSuffixes);
 }
@@ -293,10 +290,8 @@ void cmFindBase::FillUserGuessPath()
 {
   cmSearchPath& paths = this->LabeledPaths[PathLabel::Guess];
 
-  for (std::vector<std::string>::const_iterator p =
-         this->UserGuessArgs.begin();
-       p != this->UserGuessArgs.end(); ++p) {
-    paths.AddUserPath(*p);
+  for (std::string const& p : this->UserGuessArgs) {
+    paths.AddUserPath(p);
   }
   paths.AddSuffixes(this->SearchPathSuffixes);
 }
@@ -335,7 +330,7 @@ bool cmFindBase::CheckForVariableInCache()
     cmState* state = this->Makefile->GetState();
     const char* cacheEntry = state->GetCacheEntryValue(this->VariableName);
     bool found = !cmSystemTools::IsNOTFOUND(cacheValue);
-    bool cached = cacheEntry != CM_NULLPTR;
+    bool cached = cacheEntry != nullptr;
     if (found) {
       // If the user specifies the entry on the command line without a
       // type we should add the type and docstring but keep the
diff --git a/Source/cmFindCommon.cxx b/Source/cmFindCommon.cxx
index 4ef0f3ec1..814296201 100644
--- a/Source/cmFindCommon.cxx
+++ b/Source/cmFindCommon.cxx
@@ -155,10 +155,9 @@ void cmFindCommon::SelectDefaultMacMode()
 void cmFindCommon::RerootPaths(std::vector<std::string>& paths)
 {
 #if 0
-  for(std::vector<std::string>::const_iterator i = paths.begin();
-      i != paths.end(); ++i)
+  for(std::string const& p : paths)
     {
-    fprintf(stderr, "[%s]\n", i->c_str());
+    fprintf(stderr, "[%s]\n", p.c_str());
     }
 #endif
   // Short-circuit if there is nothing to do.
@@ -194,9 +193,8 @@ void cmFindCommon::RerootPaths(std::vector<std::string>& paths)
   if (sysroot) {
     roots.push_back(sysroot);
   }
-  for (std::vector<std::string>::iterator ri = roots.begin();
-       ri != roots.end(); ++ri) {
-    cmSystemTools::ConvertToUnixSlashes(*ri);
+  for (std::string& r : roots) {
+    cmSystemTools::ConvertToUnixSlashes(r);
   }
 
   const char* stagePrefix =
@@ -206,24 +204,22 @@ void cmFindCommon::RerootPaths(std::vector<std::string>& paths)
   std::vector<std::string> unrootedPaths = paths;
   paths.clear();
 
-  for (std::vector<std::string>::const_iterator ri = roots.begin();
-       ri != roots.end(); ++ri) {
-    for (std::vector<std::string>::const_iterator ui = unrootedPaths.begin();
-         ui != unrootedPaths.end(); ++ui) {
+  for (std::string const& r : roots) {
+    for (std::string const& up : unrootedPaths) {
       // Place the unrooted path under the current root if it is not
       // already inside.  Skip the unrooted path if it is relative to
       // a user home directory or is empty.
       std::string rootedDir;
-      if (cmSystemTools::IsSubDirectory(*ui, *ri) ||
-          (stagePrefix && cmSystemTools::IsSubDirectory(*ui, stagePrefix))) {
-        rootedDir = *ui;
-      } else if (!ui->empty() && (*ui)[0] != '~') {
+      if (cmSystemTools::IsSubDirectory(up, r) ||
+          (stagePrefix && cmSystemTools::IsSubDirectory(up, stagePrefix))) {
+        rootedDir = up;
+      } else if (!up.empty() && up[0] != '~') {
         // Start with the new root.
-        rootedDir = *ri;
+        rootedDir = r;
         rootedDir += "/";
 
         // Append the original path with its old root removed.
-        rootedDir += cmSystemTools::SplitPathRootComponent(*ui);
+        rootedDir += cmSystemTools::SplitPathRootComponent(up);
       }
 
       // Store the new path.
@@ -242,22 +238,21 @@ void cmFindCommon::GetIgnoredPaths(std::vector<std::string>& ignore)
 {
   // null-terminated list of paths.
   static const char* paths[] = { "CMAKE_SYSTEM_IGNORE_PATH",
-                                 "CMAKE_IGNORE_PATH", CM_NULLPTR };
+                                 "CMAKE_IGNORE_PATH", nullptr };
 
   // Construct the list of path roots with no trailing slashes.
   for (const char** pathName = paths; *pathName; ++pathName) {
     // Get the list of paths to ignore from the variable.
     const char* ignorePath = this->Makefile->GetDefinition(*pathName);
-    if ((ignorePath == CM_NULLPTR) || (strlen(ignorePath) == 0)) {
+    if ((ignorePath == nullptr) || (strlen(ignorePath) == 0)) {
       continue;
     }
 
     cmSystemTools::ExpandListArgument(ignorePath, ignore);
   }
 
-  for (std::vector<std::string>::iterator i = ignore.begin();
-       i != ignore.end(); ++i) {
-    cmSystemTools::ConvertToUnixSlashes(*i);
+  for (std::string& i : ignore) {
+    cmSystemTools::ConvertToUnixSlashes(i);
   }
 }
 
@@ -337,9 +332,8 @@ void cmFindCommon::ComputeFinalPaths()
   // Combine the seperate path types, filtering out ignores
   this->SearchPaths.clear();
   std::vector<PathLabel>& allLabels = this->PathGroupLabelMap[PathGroup::All];
-  for (std::vector<PathLabel>::const_iterator l = allLabels.begin();
-       l != allLabels.end(); ++l) {
-    this->LabeledPaths[*l].ExtractWithout(ignored, this->SearchPaths);
+  for (PathLabel const& l : allLabels) {
+    this->LabeledPaths[l].ExtractWithout(ignored, this->SearchPaths);
   }
 
   // Expand list of paths inside all search roots.
diff --git a/Source/cmFindCommon.h b/Source/cmFindCommon.h
index 72dcd355d..b237f1bd1 100644
--- a/Source/cmFindCommon.h
+++ b/Source/cmFindCommon.h
@@ -3,7 +3,7 @@
 #ifndef cmFindCommon_h
 #define cmFindCommon_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <map>
 #include <set>
@@ -25,7 +25,7 @@ class cmFindCommon : public cmCommand
 {
 public:
   cmFindCommon();
-  ~cmFindCommon() CM_OVERRIDE;
+  ~cmFindCommon() override;
 
 protected:
   friend class cmSearchPath;
@@ -112,7 +112,7 @@ protected:
 
   std::vector<std::string> SearchPathSuffixes;
 
-  std::map<PathGroup, std::vector<PathLabel> > PathGroupLabelMap;
+  std::map<PathGroup, std::vector<PathLabel>> PathGroupLabelMap;
   std::vector<PathGroup> PathGroupOrder;
   std::map<std::string, PathLabel> PathLabelStringMap;
   std::map<PathLabel, cmSearchPath> LabeledPaths;
diff --git a/Source/cmFindFileCommand.h b/Source/cmFindFileCommand.h
index bf57fecd3..430944942 100644
--- a/Source/cmFindFileCommand.h
+++ b/Source/cmFindFileCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmFindFileCommand_h
 #define cmFindFileCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmFindPathCommand.h"
 
@@ -24,7 +24,7 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmFindFileCommand; }
+  cmCommand* Clone() override { return new cmFindFileCommand; }
 };
 
 #endif
diff --git a/Source/cmFindLibraryCommand.cxx b/Source/cmFindLibraryCommand.cxx
index a6b1a2155..758da2ce0 100644
--- a/Source/cmFindLibraryCommand.cxx
+++ b/Source/cmFindLibraryCommand.cxx
@@ -68,8 +68,8 @@ bool cmFindLibraryCommand::InitialPass(std::vector<std::string> const& argsIn,
     this->AddArchitecturePaths("x32");
   }
 
-  std::string library = this->FindLibrary();
-  if (library != "") {
+  std::string const library = this->FindLibrary();
+  if (!library.empty()) {
     // Save the value in the cache
     this->Makefile->AddCacheDefinition(this->VariableName, library.c_str(),
                                        this->VariableDocumentation.c_str(),
@@ -87,9 +87,8 @@ void cmFindLibraryCommand::AddArchitecturePaths(const char* suffix)
 {
   std::vector<std::string> original;
   original.swap(this->SearchPaths);
-  for (std::vector<std::string>::const_iterator i = original.begin();
-       i != original.end(); ++i) {
-    this->AddArchitecturePath(*i, 0, suffix);
+  for (std::string const& o : original) {
+    this->AddArchitecturePath(o, 0, suffix);
   }
 }
 
@@ -254,15 +253,14 @@ cmFindLibraryHelper::cmFindLibraryHelper(cmMakefile* mf)
 void cmFindLibraryHelper::RegexFromLiteral(std::string& out,
                                            std::string const& in)
 {
-  for (std::string::const_iterator ci = in.begin(); ci != in.end(); ++ci) {
-    char ch = *ci;
+  for (char ch : in) {
     if (ch == '[' || ch == ']' || ch == '(' || ch == ')' || ch == '\\' ||
         ch == '.' || ch == '*' || ch == '+' || ch == '?' || ch == '-' ||
         ch == '^' || ch == '$') {
       out += "\\";
     }
 #if defined(_WIN32) || defined(__APPLE__)
-    out += tolower(ch);
+    out += static_cast<char>(tolower(ch));
 #else
     out += ch;
 #endif
@@ -276,23 +274,20 @@ void cmFindLibraryHelper::RegexFromList(std::string& out,
   // else and the result can be checked after matching.
   out += "(";
   const char* sep = "";
-  for (std::vector<std::string>::const_iterator si = in.begin();
-       si != in.end(); ++si) {
+  for (std::string const& s : in) {
     // Separate from previous item.
     out += sep;
     sep = "|";
 
     // Append this item.
-    this->RegexFromLiteral(out, *si);
+    this->RegexFromLiteral(out, s);
   }
   out += ")";
 }
 
 bool cmFindLibraryHelper::HasValidSuffix(std::string const& name)
 {
-  for (std::vector<std::string>::const_iterator si = this->Suffixes.begin();
-       si != this->Suffixes.end(); ++si) {
-    std::string suffix = *si;
+  for (std::string suffix : this->Suffixes) {
     if (name.length() <= suffix.length()) {
       continue;
     }
@@ -339,9 +334,8 @@ void cmFindLibraryHelper::SetName(std::string const& name)
 
 bool cmFindLibraryHelper::CheckDirectory(std::string const& path)
 {
-  for (std::vector<Name>::iterator i = this->Names.begin();
-       i != this->Names.end(); ++i) {
-    if (this->CheckDirectoryForName(path, *i)) {
+  for (Name& i : this->Names) {
+    if (this->CheckDirectoryForName(path, i)) {
       return true;
     }
   }
@@ -376,9 +370,7 @@ bool cmFindLibraryHelper::CheckDirectoryForName(std::string const& path,
   std::string dir = path;
   cmSystemTools::ConvertToUnixSlashes(dir);
   std::set<std::string> const& files = this->GG->GetDirectoryContent(dir);
-  for (std::set<std::string>::const_iterator fi = files.begin();
-       fi != files.end(); ++fi) {
-    std::string const& origName = *fi;
+  for (std::string const& origName : files) {
 #if defined(_WIN32) || defined(__APPLE__)
     std::string testName = cmSystemTools::LowerCase(origName);
 #else
@@ -430,14 +422,12 @@ std::string cmFindLibraryCommand::FindNormalLibraryNamesPerDir()
 {
   // Search for all names in each directory.
   cmFindLibraryHelper helper(this->Makefile);
-  for (std::vector<std::string>::const_iterator ni = this->Names.begin();
-       ni != this->Names.end(); ++ni) {
-    helper.AddName(*ni);
+  for (std::string const& n : this->Names) {
+    helper.AddName(n);
   }
   // Search every directory.
-  for (std::vector<std::string>::const_iterator p = this->SearchPaths.begin();
-       p != this->SearchPaths.end(); ++p) {
-    if (helper.CheckDirectory(*p)) {
+  for (std::string const& sp : this->SearchPaths) {
+    if (helper.CheckDirectory(sp)) {
       return helper.BestPath;
     }
   }
@@ -449,16 +439,13 @@ std::string cmFindLibraryCommand::FindNormalLibraryDirsPerName()
 {
   // Search the entire path for each name.
   cmFindLibraryHelper helper(this->Makefile);
-  for (std::vector<std::string>::const_iterator ni = this->Names.begin();
-       ni != this->Names.end(); ++ni) {
+  for (std::string const& n : this->Names) {
     // Switch to searching for this name.
-    helper.SetName(*ni);
+    helper.SetName(n);
 
     // Search every directory.
-    for (std::vector<std::string>::const_iterator p =
-           this->SearchPaths.begin();
-         p != this->SearchPaths.end(); ++p) {
-      if (helper.CheckDirectory(*p)) {
+    for (std::string const& sp : this->SearchPaths) {
+      if (helper.CheckDirectory(sp)) {
         return helper.BestPath;
       }
     }
@@ -479,12 +466,10 @@ std::string cmFindLibraryCommand::FindFrameworkLibraryNamesPerDir()
 {
   std::string fwPath;
   // Search for all names in each search path.
-  for (std::vector<std::string>::const_iterator di = this->SearchPaths.begin();
-       di != this->SearchPaths.end(); ++di) {
-    for (std::vector<std::string>::const_iterator ni = this->Names.begin();
-         ni != this->Names.end(); ++ni) {
-      fwPath = *di;
-      fwPath += *ni;
+  for (std::string const& d : this->SearchPaths) {
+    for (std::string const& n : this->Names) {
+      fwPath = d;
+      fwPath += n;
       fwPath += ".framework";
       if (cmSystemTools::FileIsDirectory(fwPath)) {
         return cmSystemTools::CollapseFullPath(fwPath);
@@ -500,13 +485,10 @@ std::string cmFindLibraryCommand::FindFrameworkLibraryDirsPerName()
 {
   std::string fwPath;
   // Search for each name in all search paths.
-  for (std::vector<std::string>::const_iterator ni = this->Names.begin();
-       ni != this->Names.end(); ++ni) {
-    for (std::vector<std::string>::const_iterator di =
-           this->SearchPaths.begin();
-         di != this->SearchPaths.end(); ++di) {
-      fwPath = *di;
-      fwPath += *ni;
+  for (std::string const& n : this->Names) {
+    for (std::string const& d : this->SearchPaths) {
+      fwPath = d;
+      fwPath += n;
       fwPath += ".framework";
       if (cmSystemTools::FileIsDirectory(fwPath)) {
         return cmSystemTools::CollapseFullPath(fwPath);
diff --git a/Source/cmFindLibraryCommand.h b/Source/cmFindLibraryCommand.h
index 9d38eab33..fb8a7002d 100644
--- a/Source/cmFindLibraryCommand.h
+++ b/Source/cmFindLibraryCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmFindLibraryCommand_h
 #define cmFindLibraryCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -27,14 +27,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmFindLibraryCommand; }
+  cmCommand* Clone() override { return new cmFindLibraryCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 protected:
   void AddArchitecturePaths(const char* suffix);
diff --git a/Source/cmFindPackageCommand.cxx b/Source/cmFindPackageCommand.cxx
index 7797700d6..5a7265581 100644
--- a/Source/cmFindPackageCommand.cxx
+++ b/Source/cmFindPackageCommand.cxx
@@ -13,6 +13,7 @@
 #include <deque>
 #include <functional>
 #include <iterator>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <string.h>
@@ -24,7 +25,6 @@
 #include "cmState.h"
 #include "cmStateTypes.h"
 #include "cmVersion.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 #if defined(__HAIKU__)
@@ -367,14 +367,12 @@ bool cmFindPackageCommand::InitialPass(std::vector<std::string> const& args,
   if (!this->UseFindModules && !this->UseConfigFiles) {
     std::ostringstream e;
     e << "given options exclusive to Module mode:\n";
-    for (std::set<unsigned int>::const_iterator si = moduleArgs.begin();
-         si != moduleArgs.end(); ++si) {
-      e << "  " << args[*si] << "\n";
+    for (unsigned int si : moduleArgs) {
+      e << "  " << args[si] << "\n";
     }
     e << "and options exclusive to Config mode:\n";
-    for (std::set<unsigned int>::const_iterator si = configArgs.begin();
-         si != configArgs.end(); ++si) {
-      e << "  " << args[*si] << "\n";
+    for (unsigned int si : configArgs) {
+      e << "  " << args[si] << "\n";
     }
     e << "The options are incompatible.";
     this->SetError(e.str());
@@ -518,13 +516,12 @@ bool cmFindPackageCommand::InitialPass(std::vector<std::string> const& args,
 
   // Add the default configs.
   if (this->Configs.empty()) {
-    for (std::vector<std::string>::const_iterator ni = this->Names.begin();
-         ni != this->Names.end(); ++ni) {
-      std::string config = *ni;
+    for (std::string const& n : this->Names) {
+      std::string config = n;
       config += "Config.cmake";
       this->Configs.push_back(config);
 
-      config = cmSystemTools::LowerCase(*ni);
+      config = cmSystemTools::LowerCase(n);
       config += "-config.cmake";
       this->Configs.push_back(config);
     }
@@ -611,14 +608,12 @@ void cmFindPackageCommand::AddFindDefinition(const std::string& var,
 
 void cmFindPackageCommand::RestoreFindDefinitions()
 {
-  for (std::map<std::string, OriginalDef>::iterator i =
-         this->OriginalDefs.begin();
-       i != this->OriginalDefs.end(); ++i) {
-    OriginalDef const& od = i->second;
+  for (auto const& i : this->OriginalDefs) {
+    OriginalDef const& od = i.second;
     if (od.exists) {
-      this->Makefile->AddDefinition(i->first, od.value.c_str());
+      this->Makefile->AddDefinition(i.first, od.value.c_str());
     } else {
-      this->Makefile->RemoveDefinition(i->first);
+      this->Makefile->RemoveDefinition(i.first);
     }
   }
 }
@@ -874,13 +869,11 @@ bool cmFindPackageCommand::HandlePackageMode()
   std::string consideredVersions;
 
   const char* sep = "";
-  for (std::vector<ConfigFileInfo>::const_iterator i =
-         this->ConsideredConfigs.begin();
-       i != this->ConsideredConfigs.end(); ++i) {
+  for (ConfigFileInfo const& i : this->ConsideredConfigs) {
     consideredConfigFiles += sep;
     consideredVersions += sep;
-    consideredConfigFiles += i->filename;
-    consideredVersions += i->version;
+    consideredConfigFiles += i.filename;
+    consideredVersions += i.version;
     sep = ";";
   }
 
@@ -946,9 +939,8 @@ bool cmFindPackageCommand::FindConfig()
 bool cmFindPackageCommand::FindPrefixedConfig()
 {
   std::vector<std::string> const& prefixes = this->SearchPaths;
-  for (std::vector<std::string>::const_iterator pi = prefixes.begin();
-       pi != prefixes.end(); ++pi) {
-    if (this->SearchPrefix(*pi)) {
+  for (std::string const& p : prefixes) {
+    if (this->SearchPrefix(p)) {
       return true;
     }
   }
@@ -958,9 +950,8 @@ bool cmFindPackageCommand::FindPrefixedConfig()
 bool cmFindPackageCommand::FindFrameworkConfig()
 {
   std::vector<std::string> const& prefixes = this->SearchPaths;
-  for (std::vector<std::string>::const_iterator i = prefixes.begin();
-       i != prefixes.end(); ++i) {
-    if (this->SearchFrameworkPrefix(*i)) {
+  for (std::string const& p : prefixes) {
+    if (this->SearchFrameworkPrefix(p)) {
       return true;
     }
   }
@@ -970,9 +961,8 @@ bool cmFindPackageCommand::FindFrameworkConfig()
 bool cmFindPackageCommand::FindAppBundleConfig()
 {
   std::vector<std::string> const& prefixes = this->SearchPaths;
-  for (std::vector<std::string>::const_iterator i = prefixes.begin();
-       i != prefixes.end(); ++i) {
-    if (this->SearchAppBundlePrefix(*i)) {
+  for (std::string const& p : prefixes) {
+    if (this->SearchAppBundlePrefix(p)) {
       return true;
     }
   }
@@ -1171,14 +1161,12 @@ void cmFindPackageCommand::FillPrefixesSystemEnvironment()
   // working directory.
   std::vector<std::string> tmp;
   cmSystemTools::GetPath(tmp);
-  for (std::vector<std::string>::iterator i = tmp.begin(); i != tmp.end();
-       ++i) {
+  for (std::string const& i : tmp) {
     // If the path is a PREFIX/bin case then add its parent instead.
-    if ((cmHasLiteralSuffix(*i, "/bin")) ||
-        (cmHasLiteralSuffix(*i, "/sbin"))) {
-      paths.AddPath(cmSystemTools::GetFilenamePath(*i));
+    if ((cmHasLiteralSuffix(i, "/bin")) || (cmHasLiteralSuffix(i, "/sbin"))) {
+      paths.AddPath(cmSystemTools::GetFilenamePath(i));
     } else {
-      paths.AddPath(*i);
+      paths.AddPath(i);
     }
   }
 }
@@ -1296,9 +1284,8 @@ void cmFindPackageCommand::LoadPackageRegistryWin(bool user, unsigned int view,
   if (user && !bad.empty() &&
       RegOpenKeyExW(HKEY_CURRENT_USER, key.c_str(), 0, KEY_SET_VALUE | view,
                     &hKey) == ERROR_SUCCESS) {
-    for (std::set<std::wstring>::const_iterator vi = bad.begin();
-         vi != bad.end(); ++vi) {
-      RegDeleteValueW(hKey, vi->c_str());
+    for (std::wstring const& v : bad) {
+      RegDeleteValueW(hKey, v.c_str());
     }
     RegCloseKey(hKey);
   }
@@ -1319,7 +1306,7 @@ public:
       cmSystemTools::RemoveFile(this->File);
     }
   }
-  void Release() { this->File = CM_NULLPTR; }
+  void Release() { this->File = nullptr; }
 };
 
 void cmFindPackageCommand::LoadPackageRegistryDir(std::string const& dir,
@@ -1395,10 +1382,8 @@ void cmFindPackageCommand::FillPrefixesUserGuess()
 {
   cmSearchPath& paths = this->LabeledPaths[PathLabel::Guess];
 
-  for (std::vector<std::string>::const_iterator p =
-         this->UserGuessArgs.begin();
-       p != this->UserGuessArgs.end(); ++p) {
-    paths.AddUserPath(*p);
+  for (std::string const& p : this->UserGuessArgs) {
+    paths.AddUserPath(p);
   }
 }
 
@@ -1406,10 +1391,8 @@ void cmFindPackageCommand::FillPrefixesUserHints()
 {
   cmSearchPath& paths = this->LabeledPaths[PathLabel::Hints];
 
-  for (std::vector<std::string>::const_iterator p =
-         this->UserHintsArgs.begin();
-       p != this->UserHintsArgs.end(); ++p) {
-    paths.AddUserPath(*p);
+  for (std::string const& p : this->UserHintsArgs) {
+    paths.AddUserPath(p);
   }
 }
 
@@ -1418,12 +1401,10 @@ bool cmFindPackageCommand::SearchDirectory(std::string const& dir)
   assert(!dir.empty() && dir[dir.size() - 1] == '/');
 
   // Check each path suffix on this directory.
-  for (std::vector<std::string>::const_iterator si =
-         this->SearchPathSuffixes.begin();
-       si != this->SearchPathSuffixes.end(); ++si) {
+  for (std::string const& s : this->SearchPathSuffixes) {
     std::string d = dir;
-    if (!si->empty()) {
-      d += *si;
+    if (!s.empty()) {
+      d += s;
       d += "/";
     }
     if (this->CheckDirectory(d)) {
@@ -1454,11 +1435,10 @@ bool cmFindPackageCommand::FindConfigFile(std::string const& dir,
     return false;
   }
 
-  for (std::vector<std::string>::const_iterator ci = this->Configs.begin();
-       ci != this->Configs.end(); ++ci) {
+  for (std::string const& c : this->Configs) {
     file = dir;
     file += "/";
-    file += *ci;
+    file += c;
     if (this->DebugMode) {
       fprintf(stderr, "Checking file [%s]\n", file.c_str());
     }
@@ -1631,10 +1611,10 @@ protected:
 private:
   bool Search(cmFileList&);
   virtual bool Search(std::string const& parent, cmFileList&) = 0;
-  virtual CM_AUTO_PTR<cmFileListGeneratorBase> Clone() const = 0;
+  virtual std::unique_ptr<cmFileListGeneratorBase> Clone() const = 0;
   friend class cmFileList;
   cmFileListGeneratorBase* SetNext(cmFileListGeneratorBase const& next);
-  CM_AUTO_PTR<cmFileListGeneratorBase> Next;
+  std::unique_ptr<cmFileListGeneratorBase> Next;
 };
 
 class cmFileList
@@ -1642,7 +1622,7 @@ class cmFileList
 public:
   cmFileList()
     : First()
-    , Last(CM_NULLPTR)
+    , Last(nullptr)
   {
   }
   virtual ~cmFileList() {}
@@ -1658,7 +1638,7 @@ public:
   }
   bool Search()
   {
-    if (this->First.get()) {
+    if (this->First) {
       return this->First->Search(*this);
     }
     return false;
@@ -1667,7 +1647,7 @@ public:
 private:
   virtual bool Visit(std::string const& fullPath) = 0;
   friend class cmFileListGeneratorBase;
-  CM_AUTO_PTR<cmFileListGeneratorBase> First;
+  std::unique_ptr<cmFileListGeneratorBase> First;
   cmFileListGeneratorBase* Last;
 };
 
@@ -1682,7 +1662,7 @@ public:
   }
 
 private:
-  bool Visit(std::string const& fullPath) CM_OVERRIDE
+  bool Visit(std::string const& fullPath) override
   {
     if (this->UseSuffixes) {
       return this->FPC->SearchDirectory(fullPath);
@@ -1708,7 +1688,7 @@ cmFileListGeneratorBase* cmFileListGeneratorBase::SetNext(
 bool cmFileListGeneratorBase::Consider(std::string const& fullPath,
                                        cmFileList& listing)
 {
-  if (this->Next.get()) {
+  if (this->Next) {
     return this->Next->Search(fullPath + "/", listing);
   }
   return listing.Visit(fullPath + "/");
@@ -1730,14 +1710,14 @@ public:
 
 private:
   std::string String;
-  bool Search(std::string const& parent, cmFileList& lister) CM_OVERRIDE
+  bool Search(std::string const& parent, cmFileList& lister) override
   {
     std::string fullPath = parent + this->String;
     return this->Consider(fullPath, lister);
   }
-  CM_AUTO_PTR<cmFileListGeneratorBase> Clone() const CM_OVERRIDE
+  std::unique_ptr<cmFileListGeneratorBase> Clone() const override
   {
-    CM_AUTO_PTR<cmFileListGeneratorBase> g(
+    std::unique_ptr<cmFileListGeneratorBase> g(
       new cmFileListGeneratorFixed(*this));
     return g;
   }
@@ -1759,19 +1739,18 @@ public:
 
 private:
   std::vector<std::string> const& Vector;
-  bool Search(std::string const& parent, cmFileList& lister) CM_OVERRIDE
+  bool Search(std::string const& parent, cmFileList& lister) override
   {
-    for (std::vector<std::string>::const_iterator i = this->Vector.begin();
-         i != this->Vector.end(); ++i) {
-      if (this->Consider(parent + *i, lister)) {
+    for (std::string const& i : this->Vector) {
+      if (this->Consider(parent + i, lister)) {
         return true;
       }
     }
     return false;
   }
-  CM_AUTO_PTR<cmFileListGeneratorBase> Clone() const CM_OVERRIDE
+  std::unique_ptr<cmFileListGeneratorBase> Clone() const override
   {
-    CM_AUTO_PTR<cmFileListGeneratorBase> g(
+    std::unique_ptr<cmFileListGeneratorBase> g(
       new cmFileListGeneratorEnumerate(*this));
     return g;
   }
@@ -1809,7 +1788,7 @@ protected:
 
 private:
   std::vector<std::string> const& Names;
-  bool Search(std::string const& parent, cmFileList& lister) CM_OVERRIDE
+  bool Search(std::string const& parent, cmFileList& lister) override
   {
     // Construct a list of matches.
     std::vector<std::string> matches;
@@ -1820,9 +1799,8 @@ private:
       if (strcmp(fname, ".") == 0 || strcmp(fname, "..") == 0) {
         continue;
       }
-      for (std::vector<std::string>::const_iterator ni = this->Names.begin();
-           ni != this->Names.end(); ++ni) {
-        if (cmsysString_strncasecmp(fname, ni->c_str(), ni->length()) == 0) {
+      for (std::string const& n : this->Names) {
+        if (cmsysString_strncasecmp(fname, n.c_str(), n.length()) == 0) {
           matches.push_back(fname);
         }
       }
@@ -1835,17 +1813,16 @@ private:
                                  SortDirection);
     }
 
-    for (std::vector<std::string>::const_iterator i = matches.begin();
-         i != matches.end(); ++i) {
-      if (this->Consider(parent + *i, lister)) {
+    for (std::string const& i : matches) {
+      if (this->Consider(parent + i, lister)) {
         return true;
       }
     }
     return false;
   }
-  CM_AUTO_PTR<cmFileListGeneratorBase> Clone() const CM_OVERRIDE
+  std::unique_ptr<cmFileListGeneratorBase> Clone() const override
   {
-    CM_AUTO_PTR<cmFileListGeneratorBase> g(
+    std::unique_ptr<cmFileListGeneratorBase> g(
       new cmFileListGeneratorProject(*this));
     return g;
   }
@@ -1871,7 +1848,7 @@ public:
 private:
   std::vector<std::string> const& Names;
   std::string Extension;
-  bool Search(std::string const& parent, cmFileList& lister) CM_OVERRIDE
+  bool Search(std::string const& parent, cmFileList& lister) override
   {
     // Construct a list of matches.
     std::vector<std::string> matches;
@@ -1882,9 +1859,7 @@ private:
       if (strcmp(fname, ".") == 0 || strcmp(fname, "..") == 0) {
         continue;
       }
-      for (std::vector<std::string>::const_iterator ni = this->Names.begin();
-           ni != this->Names.end(); ++ni) {
-        std::string name = *ni;
+      for (std::string name : this->Names) {
         name += this->Extension;
         if (cmsysString_strcasecmp(fname, name.c_str()) == 0) {
           matches.push_back(fname);
@@ -1892,17 +1867,16 @@ private:
       }
     }
 
-    for (std::vector<std::string>::const_iterator i = matches.begin();
-         i != matches.end(); ++i) {
-      if (this->Consider(parent + *i, lister)) {
+    for (std::string const& i : matches) {
+      if (this->Consider(parent + i, lister)) {
         return true;
       }
     }
     return false;
   }
-  CM_AUTO_PTR<cmFileListGeneratorBase> Clone() const CM_OVERRIDE
+  std::unique_ptr<cmFileListGeneratorBase> Clone() const override
   {
-    CM_AUTO_PTR<cmFileListGeneratorBase> g(
+    std::unique_ptr<cmFileListGeneratorBase> g(
       new cmFileListGeneratorMacProject(*this));
     return g;
   }
@@ -1925,7 +1899,7 @@ public:
 
 private:
   std::string String;
-  bool Search(std::string const& parent, cmFileList& lister) CM_OVERRIDE
+  bool Search(std::string const& parent, cmFileList& lister) override
   {
     // Look for matching files.
     std::vector<std::string> matches;
@@ -1944,9 +1918,9 @@ private:
     }
     return false;
   }
-  CM_AUTO_PTR<cmFileListGeneratorBase> Clone() const CM_OVERRIDE
+  std::unique_ptr<cmFileListGeneratorBase> Clone() const override
   {
-    CM_AUTO_PTR<cmFileListGeneratorBase> g(
+    std::unique_ptr<cmFileListGeneratorBase> g(
       new cmFileListGeneratorCaseInsensitive(*this));
     return g;
   }
@@ -1968,7 +1942,7 @@ public:
 
 private:
   std::string Pattern;
-  bool Search(std::string const& parent, cmFileList& lister) CM_OVERRIDE
+  bool Search(std::string const& parent, cmFileList& lister) override
   {
     // Glob the set of matching files.
     std::string expr = parent;
@@ -1980,20 +1954,18 @@ private:
     std::vector<std::string> const& files = g.GetFiles();
 
     // Look for directories among the matches.
-    for (std::vector<std::string>::const_iterator fi = files.begin();
-         fi != files.end(); ++fi) {
-      if (cmSystemTools::FileIsDirectory(*fi)) {
-        if (this->Consider(*fi, lister)) {
+    for (std::string const& f : files) {
+      if (cmSystemTools::FileIsDirectory(f)) {
+        if (this->Consider(f, lister)) {
           return true;
         }
       }
     }
     return false;
   }
-  CM_AUTO_PTR<cmFileListGeneratorBase> Clone() const CM_OVERRIDE
+  std::unique_ptr<cmFileListGeneratorBase> Clone() const override
   {
-    CM_AUTO_PTR<cmFileListGeneratorBase> g(new cmFileListGeneratorGlob(*this));
-    return g;
+    return cm::make_unique<cmFileListGeneratorGlob>(*this);
   }
 };
 
diff --git a/Source/cmFindPackageCommand.h b/Source/cmFindPackageCommand.h
index 99b0059ba..150a51d14 100644
--- a/Source/cmFindPackageCommand.h
+++ b/Source/cmFindPackageCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmFindPackageCommand_h
 #define cmFindPackageCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cm_kwiml.h"
 #include <map>
@@ -51,14 +51,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmFindPackageCommand; }
+  cmCommand* Clone() override { return new cmFindPackageCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   class PathLabel : public cmFindCommon::PathLabel
diff --git a/Source/cmFindPathCommand.cxx b/Source/cmFindPathCommand.cxx
index d3541ca94..ea2641001 100644
--- a/Source/cmFindPathCommand.cxx
+++ b/Source/cmFindPathCommand.cxx
@@ -85,7 +85,7 @@ std::string cmFindPathCommand::FindHeaderInFramework(std::string const& file,
     // if the framework has a path in it then just use the filename
     if (frameWorkName.find('/') != std::string::npos) {
       fileName = file;
-      frameWorkName = "";
+      frameWorkName.clear();
     }
     if (!frameWorkName.empty()) {
       std::string fpath = dir;
@@ -124,18 +124,15 @@ std::string cmFindPathCommand::FindHeaderInFramework(std::string const& file,
 std::string cmFindPathCommand::FindNormalHeader()
 {
   std::string tryPath;
-  for (std::vector<std::string>::const_iterator ni = this->Names.begin();
-       ni != this->Names.end(); ++ni) {
-    for (std::vector<std::string>::const_iterator p =
-           this->SearchPaths.begin();
-         p != this->SearchPaths.end(); ++p) {
-      tryPath = *p;
-      tryPath += *ni;
+  for (std::string const& n : this->Names) {
+    for (std::string const& sp : this->SearchPaths) {
+      tryPath = sp;
+      tryPath += n;
       if (cmSystemTools::FileExists(tryPath.c_str())) {
         if (this->IncludeFileInPath) {
           return tryPath;
         }
-        return *p;
+        return sp;
       }
     }
   }
@@ -144,12 +141,9 @@ std::string cmFindPathCommand::FindNormalHeader()
 
 std::string cmFindPathCommand::FindFrameworkHeader()
 {
-  for (std::vector<std::string>::const_iterator ni = this->Names.begin();
-       ni != this->Names.end(); ++ni) {
-    for (std::vector<std::string>::const_iterator p =
-           this->SearchPaths.begin();
-         p != this->SearchPaths.end(); ++p) {
-      std::string fwPath = this->FindHeaderInFramework(*ni, *p);
+  for (std::string const& n : this->Names) {
+    for (std::string const& sp : this->SearchPaths) {
+      std::string fwPath = this->FindHeaderInFramework(n, sp);
       if (!fwPath.empty()) {
         return fwPath;
       }
diff --git a/Source/cmFindPathCommand.h b/Source/cmFindPathCommand.h
index 3761145b2..cb0db4c46 100644
--- a/Source/cmFindPathCommand.h
+++ b/Source/cmFindPathCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmFindPathCommand_h
 #define cmFindPathCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -27,14 +27,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmFindPathCommand; }
+  cmCommand* Clone() override { return new cmFindPathCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   bool IncludeFileInPath;
 
diff --git a/Source/cmFindProgramCommand.cxx b/Source/cmFindProgramCommand.cxx
index 9327c1805..2059b3d65 100644
--- a/Source/cmFindProgramCommand.cxx
+++ b/Source/cmFindProgramCommand.cxx
@@ -45,9 +45,8 @@ struct cmFindProgramHelper
   }
   bool CheckDirectory(std::string const& path)
   {
-    for (std::vector<std::string>::iterator i = this->Names.begin();
-         i != this->Names.end(); ++i) {
-      if (this->CheckDirectoryForName(path, *i)) {
+    for (std::string const& n : this->Names) {
+      if (this->CheckDirectoryForName(path, n)) {
         return true;
       }
     }
@@ -55,14 +54,13 @@ struct cmFindProgramHelper
   }
   bool CheckDirectoryForName(std::string const& path, std::string const& name)
   {
-    for (std::vector<std::string>::iterator ext = this->Extensions.begin();
-         ext != this->Extensions.end(); ++ext) {
+    for (std::string const& ext : this->Extensions) {
       this->TestPath = path;
       this->TestPath += name;
-      if (!ext->empty() && cmSystemTools::StringEndsWith(name, ext->c_str())) {
+      if (!ext.empty() && cmSystemTools::StringEndsWith(name, ext.c_str())) {
         continue;
       }
-      this->TestPath += *ext;
+      this->TestPath += ext;
       if (cmSystemTools::FileExists(this->TestPath, true)) {
         this->BestPath = cmSystemTools::CollapseFullPath(this->TestPath);
         return true;
@@ -99,8 +97,8 @@ bool cmFindProgramCommand::InitialPass(std::vector<std::string> const& argsIn,
     return true;
   }
 
-  std::string result = FindProgram();
-  if (result != "") {
+  std::string const result = FindProgram();
+  if (!result.empty()) {
     // Save the value in the cache
     this->Makefile->AddCacheDefinition(this->VariableName, result.c_str(),
                                        this->VariableDocumentation.c_str(),
@@ -143,9 +141,8 @@ std::string cmFindProgramCommand::FindNormalProgramNamesPerDir()
 {
   // Search for all names in each directory.
   cmFindProgramHelper helper;
-  for (std::vector<std::string>::const_iterator ni = this->Names.begin();
-       ni != this->Names.end(); ++ni) {
-    helper.AddName(*ni);
+  for (std::string const& n : this->Names) {
+    helper.AddName(n);
   }
 
   // Check for the names themselves (e.g. absolute paths).
@@ -154,9 +151,8 @@ std::string cmFindProgramCommand::FindNormalProgramNamesPerDir()
   }
 
   // Search every directory.
-  for (std::vector<std::string>::const_iterator p = this->SearchPaths.begin();
-       p != this->SearchPaths.end(); ++p) {
-    if (helper.CheckDirectory(*p)) {
+  for (std::string const& sp : this->SearchPaths) {
+    if (helper.CheckDirectory(sp)) {
       return helper.BestPath;
     }
   }
@@ -168,10 +164,9 @@ std::string cmFindProgramCommand::FindNormalProgramDirsPerName()
 {
   // Search the entire path for each name.
   cmFindProgramHelper helper;
-  for (std::vector<std::string>::const_iterator ni = this->Names.begin();
-       ni != this->Names.end(); ++ni) {
+  for (std::string const& n : this->Names) {
     // Switch to searching for this name.
-    helper.SetName(*ni);
+    helper.SetName(n);
 
     // Check for the name by itself (e.g. an absolute path).
     if (helper.CheckDirectory(std::string())) {
@@ -179,10 +174,8 @@ std::string cmFindProgramCommand::FindNormalProgramDirsPerName()
     }
 
     // Search every directory.
-    for (std::vector<std::string>::const_iterator p =
-           this->SearchPaths.begin();
-         p != this->SearchPaths.end(); ++p) {
-      if (helper.CheckDirectory(*p)) {
+    for (std::string const& sp : this->SearchPaths) {
+      if (helper.CheckDirectory(sp)) {
         return helper.BestPath;
       }
     }
@@ -193,10 +186,9 @@ std::string cmFindProgramCommand::FindNormalProgramDirsPerName()
 
 std::string cmFindProgramCommand::FindAppBundle()
 {
-  for (std::vector<std::string>::const_iterator name = this->Names.begin();
-       name != this->Names.end(); ++name) {
+  for (std::string const& name : this->Names) {
 
-    std::string appName = *name + std::string(".app");
+    std::string appName = name + std::string(".app");
     std::string appPath =
       cmSystemTools::FindDirectory(appName, this->SearchPaths, true);
 
@@ -237,7 +229,7 @@ std::string cmFindProgramCommand::GetBundleExecutable(
   // returned executableURL is relative to <appbundle>/Contents/MacOS/
   CFURLRef executableURL = CFBundleCopyExecutableURL(appBundle);
 
-  if (executableURL != NULL) {
+  if (executableURL != nullptr) {
     const int MAX_OSX_PATH_SIZE = 1024;
     char buffer[MAX_OSX_PATH_SIZE];
 
diff --git a/Source/cmFindProgramCommand.h b/Source/cmFindProgramCommand.h
index b0cd42096..147936cc0 100644
--- a/Source/cmFindProgramCommand.h
+++ b/Source/cmFindProgramCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmFindProgramCommand_h
 #define cmFindProgramCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -28,14 +28,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmFindProgramCommand; }
+  cmCommand* Clone() override { return new cmFindProgramCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   std::string FindProgram();
diff --git a/Source/cmForEachCommand.cxx b/Source/cmForEachCommand.cxx
index 8346b2309..542a86025 100644
--- a/Source/cmForEachCommand.cxx
+++ b/Source/cmForEachCommand.cxx
@@ -2,6 +2,7 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmForEachCommand.h"
 
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
@@ -9,7 +10,6 @@
 #include "cmExecutionStatus.h"
 #include "cmMakefile.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmForEachFunctionBlocker::cmForEachFunctionBlocker(cmMakefile* mf)
@@ -35,7 +35,8 @@ bool cmForEachFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
     // if this is the endofreach for this statement
     if (!this->Depth) {
       // Remove the function blocker for this scope or bail.
-      CM_AUTO_PTR<cmFunctionBlocker> fb(mf.RemoveFunctionBlocker(this, lff));
+      std::unique_ptr<cmFunctionBlocker> fb(
+        mf.RemoveFunctionBlocker(this, lff));
       if (!fb.get()) {
         return false;
       }
@@ -54,9 +55,9 @@ bool cmForEachFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
         mf.AddDefinition(this->Args[0], j->c_str());
         // Invoke all the functions that were collected in the block.
         cmExecutionStatus status;
-        for (unsigned int c = 0; c < this->Functions.size(); ++c) {
+        for (cmListFileFunction const& func : this->Functions) {
           status.Clear();
-          mf.ExecuteCommand(this->Functions[c], status);
+          mf.ExecuteCommand(func, status);
           if (status.GetReturnInvoked()) {
             inStatus.SetReturnInvoked();
             // restore the variable to its prior value
@@ -181,7 +182,7 @@ bool cmForEachCommand::InitialPass(std::vector<std::string> const& args,
 
 bool cmForEachCommand::HandleInMode(std::vector<std::string> const& args)
 {
-  CM_AUTO_PTR<cmForEachFunctionBlocker> f(
+  std::unique_ptr<cmForEachFunctionBlocker> f(
     new cmForEachFunctionBlocker(this->Makefile));
   f->Args.push_back(args[0]);
 
@@ -213,7 +214,7 @@ bool cmForEachCommand::HandleInMode(std::vector<std::string> const& args)
     }
   }
 
-  this->Makefile->AddFunctionBlocker(f.release()); // TODO: pass auto_ptr
+  this->Makefile->AddFunctionBlocker(f.release()); // TODO: pass unique_ptr
 
   return true;
 }
diff --git a/Source/cmForEachCommand.h b/Source/cmForEachCommand.h
index 7c8a6d836..5131a4f18 100644
--- a/Source/cmForEachCommand.h
+++ b/Source/cmForEachCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmForEachCommand_h
 #define cmForEachCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -19,10 +19,10 @@ class cmForEachFunctionBlocker : public cmFunctionBlocker
 {
 public:
   cmForEachFunctionBlocker(cmMakefile* mf);
-  ~cmForEachFunctionBlocker() CM_OVERRIDE;
+  ~cmForEachFunctionBlocker() override;
   bool IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile& mf,
-                         cmExecutionStatus&) CM_OVERRIDE;
-  bool ShouldRemove(const cmListFileFunction& lff, cmMakefile& mf) CM_OVERRIDE;
+                         cmExecutionStatus&) override;
+  bool ShouldRemove(const cmListFileFunction& lff, cmMakefile& mf) override;
 
   std::vector<std::string> Args;
   std::vector<cmListFileFunction> Functions;
@@ -39,14 +39,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmForEachCommand; }
+  cmCommand* Clone() override { return new cmForEachCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   bool HandleInMode(std::vector<std::string> const& args);
diff --git a/Source/cmFortranParser.h b/Source/cmFortranParser.h
index d8b002309..3f5ad8744 100644
--- a/Source/cmFortranParser.h
+++ b/Source/cmFortranParser.h
@@ -4,7 +4,7 @@
 #define cmFortranParser_h
 
 #if !defined(cmFortranLexer_cxx) && !defined(cmFortranParser_cxx)
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <set>
 #include <string>
diff --git a/Source/cmFortranParserImpl.cxx b/Source/cmFortranParserImpl.cxx
index 4e23f3691..81f1286d2 100644
--- a/Source/cmFortranParserImpl.cxx
+++ b/Source/cmFortranParserImpl.cxx
@@ -3,7 +3,6 @@
 #include "cmFortranParser.h"
 #include "cmSystemTools.h"
 
-#include "cmConfigure.h"
 #include <assert.h>
 #include <set>
 #include <stack>
@@ -31,9 +30,8 @@ bool cmFortranParser_s::FindIncludeFile(const char* dir,
   }
 
   // Search the include path for the file.
-  for (std::vector<std::string>::const_iterator i = this->IncludePath.begin();
-       i != this->IncludePath.end(); ++i) {
-    fullName = *i;
+  for (std::string const& i : this->IncludePath) {
+    fullName = i;
     fullName += "/";
     fullName += includeName;
     if (cmSystemTools::FileExists(fullName.c_str(), true)) {
@@ -61,7 +59,7 @@ cmFortranParser_s::cmFortranParser_s(std::vector<std::string> const& includes,
   // Create a dummy buffer that is never read but is the fallback
   // buffer when the last file is popped off the stack.
   YY_BUFFER_STATE buffer =
-    cmFortran_yy_create_buffer(CM_NULLPTR, 4, this->Scanner);
+    cmFortran_yy_create_buffer(nullptr, 4, this->Scanner);
   cmFortran_yy_switch_to_buffer(buffer, this->Scanner);
 }
 
@@ -79,7 +77,7 @@ bool cmFortranParser_FilePush(cmFortranParser* parser, const char* fname)
     std::string dir = cmSystemTools::GetParentDirectory(fname);
     cmFortranFile f(file, current, dir);
     YY_BUFFER_STATE buffer =
-      cmFortran_yy_create_buffer(CM_NULLPTR, 16384, parser->Scanner);
+      cmFortran_yy_create_buffer(nullptr, 16384, parser->Scanner);
     cmFortran_yy_switch_to_buffer(buffer, parser->Scanner);
     parser->FileStack.push(f);
     return true;
@@ -121,14 +119,14 @@ int cmFortranParser_Input(cmFortranParser* parser, char* buffer,
       n = 1;
       ff.LastCharWasNewline = true;
     }
-    return (int)n;
+    return static_cast<int>(n);
   }
   return 0;
 }
 
 void cmFortranParser_StringStart(cmFortranParser* parser)
 {
-  parser->TokenString = "";
+  parser->TokenString.clear();
 }
 
 const char* cmFortranParser_StringEnd(cmFortranParser* parser)
diff --git a/Source/cmFunctionCommand.cxx b/Source/cmFunctionCommand.cxx
index ee52bde37..774df849c 100644
--- a/Source/cmFunctionCommand.cxx
+++ b/Source/cmFunctionCommand.cxx
@@ -18,12 +18,12 @@ public:
   cmFunctionHelperCommand() {}
 
   ///! clean up any memory allocated by the function
-  ~cmFunctionHelperCommand() CM_OVERRIDE {}
+  ~cmFunctionHelperCommand() override {}
 
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmFunctionHelperCommand* newC = new cmFunctionHelperCommand;
     // we must copy when we clone
@@ -39,10 +39,10 @@ public:
    * the CMakeLists.txt file.
    */
   bool InvokeInitialPass(const std::vector<cmListFileArgument>& args,
-                         cmExecutionStatus&) CM_OVERRIDE;
+                         cmExecutionStatus&) override;
 
   bool InitialPass(std::vector<std::string> const&,
-                   cmExecutionStatus&) CM_OVERRIDE
+                   cmExecutionStatus&) override
   {
     return false;
   }
@@ -104,9 +104,9 @@ bool cmFunctionHelperCommand::InvokeInitialPass(
 
   // Invoke all the functions that were collected in the block.
   // for each function
-  for (unsigned int c = 0; c < this->Functions.size(); ++c) {
+  for (cmListFileFunction const& func : this->Functions) {
     cmExecutionStatus status;
-    if (!this->Makefile->ExecuteCommand(this->Functions[c], status) ||
+    if (!this->Makefile->ExecuteCommand(func, status) ||
         status.GetNestedError()) {
       // The error message should have already included the call stack
       // so we do not need to report an error here.
diff --git a/Source/cmFunctionCommand.h b/Source/cmFunctionCommand.h
index f26312632..3352b9235 100644
--- a/Source/cmFunctionCommand.h
+++ b/Source/cmFunctionCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmFunctionCommand_h
 #define cmFunctionCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -19,10 +19,10 @@ class cmFunctionFunctionBlocker : public cmFunctionBlocker
 {
 public:
   cmFunctionFunctionBlocker() { this->Depth = 0; }
-  ~cmFunctionFunctionBlocker() CM_OVERRIDE {}
+  ~cmFunctionFunctionBlocker() override {}
   bool IsFunctionBlocked(const cmListFileFunction&, cmMakefile& mf,
-                         cmExecutionStatus&) CM_OVERRIDE;
-  bool ShouldRemove(const cmListFileFunction&, cmMakefile& mf) CM_OVERRIDE;
+                         cmExecutionStatus&) override;
+  bool ShouldRemove(const cmListFileFunction&, cmMakefile& mf) override;
 
   std::vector<std::string> Args;
   std::vector<cmListFileFunction> Functions;
@@ -36,14 +36,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmFunctionCommand; }
+  cmCommand* Clone() override { return new cmFunctionCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmGeneratedFileStream.h b/Source/cmGeneratedFileStream.h
index 56f9988ff..a96f38fa8 100644
--- a/Source/cmGeneratedFileStream.h
+++ b/Source/cmGeneratedFileStream.h
@@ -3,7 +3,7 @@
 #ifndef cmGeneratedFileStream_h
 #define cmGeneratedFileStream_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cm_codecvt.hxx"
 #include "cmsys/FStream.hxx"
@@ -94,7 +94,7 @@ public:
    * file was successfully written before allowing the original to be
    * replaced.
    */
-  ~cmGeneratedFileStream() CM_OVERRIDE;
+  ~cmGeneratedFileStream() override;
 
   /**
    * Open an output file by name.  This should be used only with a
diff --git a/Source/cmGeneratorExpression.cxx b/Source/cmGeneratorExpression.cxx
index 00b5ff4ef..86991c1c5 100644
--- a/Source/cmGeneratorExpression.cxx
+++ b/Source/cmGeneratorExpression.cxx
@@ -3,6 +3,7 @@
 #include "cmGeneratorExpression.h"
 
 #include "cmsys/RegularExpression.hxx"
+#include <memory> // IWYU pragma: keep
 #include <utility>
 
 #include "assert.h"
@@ -12,7 +13,6 @@
 #include "cmGeneratorExpressionLexer.h"
 #include "cmGeneratorExpressionParser.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 
 cmGeneratorExpression::cmGeneratorExpression(
   const cmListFileBacktrace& backtrace)
@@ -20,14 +20,14 @@ cmGeneratorExpression::cmGeneratorExpression(
 {
 }
 
-CM_AUTO_PTR<cmCompiledGeneratorExpression> cmGeneratorExpression::Parse(
+std::unique_ptr<cmCompiledGeneratorExpression> cmGeneratorExpression::Parse(
   std::string const& input)
 {
-  return CM_AUTO_PTR<cmCompiledGeneratorExpression>(
+  return std::unique_ptr<cmCompiledGeneratorExpression>(
     new cmCompiledGeneratorExpression(this->Backtrace, input));
 }
 
-CM_AUTO_PTR<cmCompiledGeneratorExpression> cmGeneratorExpression::Parse(
+std::unique_ptr<cmCompiledGeneratorExpression> cmGeneratorExpression::Parse(
   const char* input)
 {
   return this->Parse(std::string(input ? input : ""));
@@ -68,7 +68,7 @@ const char* cmCompiledGeneratorExpression::EvaluateWithContext(
     return this->Input.c_str();
   }
 
-  this->Output = "";
+  this->Output.clear();
 
   std::vector<cmGeneratorExpressionEvaluator*>::const_iterator it =
     this->Evaluators.begin();
@@ -81,7 +81,7 @@ const char* cmCompiledGeneratorExpression::EvaluateWithContext(
     this->SeenTargetProperties.insert(context.SeenTargetProperties.begin(),
                                       context.SeenTargetProperties.end());
     if (context.HadError) {
-      this->Output = "";
+      this->Output.clear();
       break;
     }
   }
@@ -199,15 +199,14 @@ static void prefixItems(const std::string& content, std::string& result,
   std::vector<std::string> entries;
   cmGeneratorExpression::Split(content, entries);
   const char* sep = "";
-  for (std::vector<std::string>::const_iterator ei = entries.begin();
-       ei != entries.end(); ++ei) {
+  for (std::string const& e : entries) {
     result += sep;
     sep = ";";
-    if (!cmSystemTools::FileIsFullPath(ei->c_str()) &&
-        cmGeneratorExpression::Find(*ei) != 0) {
+    if (!cmSystemTools::FileIsFullPath(e.c_str()) &&
+        cmGeneratorExpression::Find(e) != 0) {
       result += prefix;
     }
-    result += *ei;
+    result += e;
   }
 }
 
@@ -297,7 +296,7 @@ void cmGeneratorExpression::Split(const std::string& input,
       std::string::size_type startPos = input.rfind(';', pos);
       if (startPos == std::string::npos) {
         preGenex = part;
-        part = "";
+        part.clear();
       } else if (startPos != pos - 1 && startPos >= lastPos) {
         part = input.substr(lastPos, startPos - lastPos);
         preGenex = input.substr(startPos + 1, pos - startPos - 1);
@@ -379,7 +378,7 @@ void cmCompiledGeneratorExpression::GetMaxLanguageStandard(
   const cmGeneratorTarget* tgt, std::map<std::string, std::string>& mapping)
 {
   typedef std::map<cmGeneratorTarget const*,
-                   std::map<std::string, std::string> >
+                   std::map<std::string, std::string>>
     MapType;
   MapType::const_iterator it = this->MaxLanguageStandard.find(tgt);
   if (it != this->MaxLanguageStandard.end()) {
diff --git a/Source/cmGeneratorExpression.h b/Source/cmGeneratorExpression.h
index 34516f5c5..cface0d70 100644
--- a/Source/cmGeneratorExpression.h
+++ b/Source/cmGeneratorExpression.h
@@ -3,12 +3,12 @@
 #ifndef cmGeneratorExpression_h
 #define cmGeneratorExpression_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmListFileCache.h"
 
-#include "cm_auto_ptr.hxx"
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <set>
 #include <string>
 #include <vector>
@@ -39,8 +39,9 @@ public:
     cmListFileBacktrace const& backtrace = cmListFileBacktrace());
   ~cmGeneratorExpression();
 
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> Parse(std::string const& input);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> Parse(const char* input);
+  std::unique_ptr<cmCompiledGeneratorExpression> Parse(
+    std::string const& input);
+  std::unique_ptr<cmCompiledGeneratorExpression> Parse(const char* input);
 
   enum PreprocessContext
   {
@@ -71,12 +72,12 @@ class cmCompiledGeneratorExpression
   CM_DISABLE_COPY(cmCompiledGeneratorExpression)
 
 public:
-  const char* Evaluate(
-    cmLocalGenerator* lg, const std::string& config, bool quiet = false,
-    cmGeneratorTarget const* headTarget = CM_NULLPTR,
-    cmGeneratorTarget const* currentTarget = CM_NULLPTR,
-    cmGeneratorExpressionDAGChecker* dagChecker = CM_NULLPTR,
-    std::string const& language = std::string()) const;
+  const char* Evaluate(cmLocalGenerator* lg, const std::string& config,
+                       bool quiet = false,
+                       cmGeneratorTarget const* headTarget = nullptr,
+                       cmGeneratorTarget const* currentTarget = nullptr,
+                       cmGeneratorExpressionDAGChecker* dagChecker = nullptr,
+                       std::string const& language = std::string()) const;
   const char* Evaluate(cmLocalGenerator* lg, const std::string& config,
                        bool quiet, cmGeneratorTarget const* headTarget,
                        cmGeneratorExpressionDAGChecker* dagChecker,
@@ -143,7 +144,7 @@ private:
   mutable std::set<cmGeneratorTarget const*> AllTargetsSeen;
   mutable std::set<std::string> SeenTargetProperties;
   mutable std::map<cmGeneratorTarget const*,
-                   std::map<std::string, std::string> >
+                   std::map<std::string, std::string>>
     MaxLanguageStandard;
   mutable std::string Output;
   mutable bool HadContextSensitiveCondition;
diff --git a/Source/cmGeneratorExpressionContext.h b/Source/cmGeneratorExpressionContext.h
index cf292dcef..5b0123ec8 100644
--- a/Source/cmGeneratorExpressionContext.h
+++ b/Source/cmGeneratorExpressionContext.h
@@ -26,7 +26,7 @@ struct cmGeneratorExpressionContext
   std::set<cmGeneratorTarget const*> AllTargets;
   std::set<std::string> SeenTargetProperties;
   std::set<cmGeneratorTarget const*> SourceSensitiveTargets;
-  std::map<cmGeneratorTarget const*, std::map<std::string, std::string> >
+  std::map<cmGeneratorTarget const*, std::map<std::string, std::string>>
     MaxLanguageStandard;
   cmLocalGenerator* LG;
   std::string Config;
diff --git a/Source/cmGeneratorExpressionDAGChecker.cxx b/Source/cmGeneratorExpressionDAGChecker.cxx
index c0266311b..f0eafb46a 100644
--- a/Source/cmGeneratorExpressionDAGChecker.cxx
+++ b/Source/cmGeneratorExpressionDAGChecker.cxx
@@ -58,7 +58,7 @@ void cmGeneratorExpressionDAGChecker::Initialize()
         TEST_TRANSITIVE_PROPERTY_METHOD) false)) // NOLINT(clang-tidy)
 #undef TEST_TRANSITIVE_PROPERTY_METHOD
   {
-    std::map<std::string, std::set<std::string> >::const_iterator it =
+    std::map<std::string, std::set<std::string>>::const_iterator it =
       top->Seen.find(this->Target);
     if (it != top->Seen.end()) {
       const std::set<std::string>& propSet = it->second;
diff --git a/Source/cmGeneratorExpressionDAGChecker.h b/Source/cmGeneratorExpressionDAGChecker.h
index 557a19220..3f73fca8a 100644
--- a/Source/cmGeneratorExpressionDAGChecker.h
+++ b/Source/cmGeneratorExpressionDAGChecker.h
@@ -3,7 +3,7 @@
 #ifndef cmGeneratorExpressionDAGChecker_h
 #define cmGeneratorExpressionDAGChecker_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmListFileCache.h"
 
@@ -61,7 +61,7 @@ struct cmGeneratorExpressionDAGChecker
   void ReportError(cmGeneratorExpressionContext* context,
                    const std::string& expr);
 
-  bool EvaluatingLinkLibraries(const char* tgt = CM_NULLPTR);
+  bool EvaluatingLinkLibraries(const char* tgt = nullptr);
 
 #define DECLARE_TRANSITIVE_PROPERTY_METHOD(METHOD) bool METHOD() const;
 
@@ -82,7 +82,7 @@ private:
   const cmGeneratorExpressionDAGChecker* const Parent;
   const std::string Target;
   const std::string Property;
-  std::map<std::string, std::set<std::string> > Seen;
+  std::map<std::string, std::set<std::string>> Seen;
   const GeneratorExpressionContent* const Content;
   const cmListFileBacktrace Backtrace;
   Result CheckResult;
diff --git a/Source/cmGeneratorExpressionEvaluationFile.cxx b/Source/cmGeneratorExpressionEvaluationFile.cxx
index 15264545b..87b6b342d 100644
--- a/Source/cmGeneratorExpressionEvaluationFile.cxx
+++ b/Source/cmGeneratorExpressionEvaluationFile.cxx
@@ -2,8 +2,8 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmGeneratorExpressionEvaluationFile.h"
 
-#include "cmConfigure.h"
 #include "cmsys/FStream.hxx"
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <utility>
 
@@ -14,17 +14,18 @@
 #include "cmMakefile.h"
 #include "cmSourceFile.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmGeneratorExpressionEvaluationFile::cmGeneratorExpressionEvaluationFile(
   const std::string& input,
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> outputFileExpr,
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> condition, bool inputIsContent)
+  std::unique_ptr<cmCompiledGeneratorExpression> outputFileExpr,
+  std::unique_ptr<cmCompiledGeneratorExpression> condition,
+  bool inputIsContent, cmPolicies::PolicyStatus policyStatusCMP0070)
   : Input(input)
-  , OutputFileExpr(outputFileExpr)
-  , Condition(condition)
+  , OutputFileExpr(std::move(outputFileExpr))
+  , Condition(std::move(condition))
   , InputIsContent(inputIsContent)
+  , PolicyStatusCMP0070(policyStatusCMP0070)
 {
 }
 
@@ -36,7 +37,7 @@ void cmGeneratorExpressionEvaluationFile::Generate(
   std::string rawCondition = this->Condition->GetInput();
   if (!rawCondition.empty()) {
     std::string condResult = this->Condition->Evaluate(
-      lg, config, false, CM_NULLPTR, CM_NULLPTR, CM_NULLPTR, lang);
+      lg, config, false, nullptr, nullptr, nullptr, lang);
     if (condResult == "0") {
       return;
     }
@@ -51,10 +52,16 @@ void cmGeneratorExpressionEvaluationFile::Generate(
     }
   }
 
-  const std::string outputFileName = this->OutputFileExpr->Evaluate(
-    lg, config, false, CM_NULLPTR, CM_NULLPTR, CM_NULLPTR, lang);
+  std::string outputFileName = this->OutputFileExpr->Evaluate(
+    lg, config, false, nullptr, nullptr, nullptr, lang);
   const std::string outputContent = inputExpression->Evaluate(
-    lg, config, false, CM_NULLPTR, CM_NULLPTR, CM_NULLPTR, lang);
+    lg, config, false, nullptr, nullptr, nullptr, lang);
+
+  if (cmSystemTools::FileIsFullPath(outputFileName)) {
+    outputFileName = cmSystemTools::CollapseFullPath(outputFileName);
+  } else {
+    outputFileName = this->FixRelativePath(outputFileName, PathForOutput, lg);
+  }
 
   std::map<std::string, std::string>::iterator it =
     outputFiles.find(outputFileName);
@@ -92,10 +99,9 @@ void cmGeneratorExpressionEvaluationFile::CreateOutputFile(
   cmGlobalGenerator* gg = lg->GetGlobalGenerator();
   gg->GetEnabledLanguages(enabledLanguages);
 
-  for (std::vector<std::string>::const_iterator le = enabledLanguages.begin();
-       le != enabledLanguages.end(); ++le) {
+  for (std::string const& le : enabledLanguages) {
     std::string name = this->OutputFileExpr->Evaluate(
-      lg, config, false, CM_NULLPTR, CM_NULLPTR, CM_NULLPTR, *le);
+      lg, config, false, nullptr, nullptr, nullptr, le);
     cmSourceFile* sf = lg->GetMakefile()->GetOrCreateSource(name);
     sf->SetProperty("GENERATED", "1");
 
@@ -111,12 +117,18 @@ void cmGeneratorExpressionEvaluationFile::Generate(cmLocalGenerator* lg)
   if (this->InputIsContent) {
     inputContent = this->Input;
   } else {
-    lg->GetMakefile()->AddCMakeDependFile(this->Input);
-    cmSystemTools::GetPermissions(this->Input.c_str(), perm);
-    cmsys::ifstream fin(this->Input.c_str());
+    std::string inputFileName = this->Input;
+    if (cmSystemTools::FileIsFullPath(inputFileName)) {
+      inputFileName = cmSystemTools::CollapseFullPath(inputFileName);
+    } else {
+      inputFileName = this->FixRelativePath(inputFileName, PathForInput, lg);
+    }
+    lg->GetMakefile()->AddCMakeDependFile(inputFileName);
+    cmSystemTools::GetPermissions(inputFileName.c_str(), perm);
+    cmsys::ifstream fin(inputFileName.c_str());
     if (!fin) {
       std::ostringstream e;
-      e << "Evaluation file \"" << this->Input << "\" cannot be read.";
+      e << "Evaluation file \"" << inputFileName << "\" cannot be read.";
       lg->IssueMessage(cmake::FATAL_ERROR, e.str());
       return;
     }
@@ -132,7 +144,7 @@ void cmGeneratorExpressionEvaluationFile::Generate(cmLocalGenerator* lg)
 
   cmListFileBacktrace lfbt = this->OutputFileExpr->GetBacktrace();
   cmGeneratorExpression contentGE(lfbt);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> inputExpression =
+  std::unique_ptr<cmCompiledGeneratorExpression> inputExpression =
     contentGE.Parse(inputContent);
 
   std::map<std::string, std::string> outputFiles;
@@ -148,14 +160,66 @@ void cmGeneratorExpressionEvaluationFile::Generate(cmLocalGenerator* lg)
   cmGlobalGenerator* gg = lg->GetGlobalGenerator();
   gg->GetEnabledLanguages(enabledLanguages);
 
-  for (std::vector<std::string>::const_iterator le = enabledLanguages.begin();
-       le != enabledLanguages.end(); ++le) {
-    for (std::vector<std::string>::const_iterator li = allConfigs.begin();
-         li != allConfigs.end(); ++li) {
-      this->Generate(lg, *li, *le, inputExpression.get(), outputFiles, perm);
+  for (std::string const& le : enabledLanguages) {
+    for (std::string const& li : allConfigs) {
+      this->Generate(lg, li, le, inputExpression.get(), outputFiles, perm);
       if (cmSystemTools::GetFatalErrorOccured()) {
         return;
       }
     }
   }
 }
+
+std::string cmGeneratorExpressionEvaluationFile::FixRelativePath(
+  std::string const& relativePath, PathRole role, cmLocalGenerator* lg)
+{
+  std::string resultPath;
+  switch (this->PolicyStatusCMP0070) {
+    case cmPolicies::WARN: {
+      std::string arg;
+      switch (role) {
+        case PathForInput:
+          arg = "INPUT";
+          break;
+        case PathForOutput:
+          arg = "OUTPUT";
+          break;
+      }
+      std::ostringstream w;
+      /* clang-format off */
+      w <<
+        cmPolicies::GetPolicyWarning(cmPolicies::CMP0070) << "\n"
+        "file(GENERATE) given relative " << arg << " path:\n"
+        "  " << relativePath << "\n"
+        "This is not defined behavior unless CMP0070 is set to NEW.  "
+        "For compatibility with older versions of CMake, the previous "
+        "undefined behavior will be used."
+        ;
+      /* clang-format on */
+      lg->IssueMessage(cmake::AUTHOR_WARNING, w.str());
+    }
+      CM_FALLTHROUGH;
+    case cmPolicies::OLD:
+      // OLD behavior is to use the relative path unchanged,
+      // which ends up being used relative to the working dir.
+      resultPath = relativePath;
+      break;
+    case cmPolicies::REQUIRED_IF_USED:
+    case cmPolicies::REQUIRED_ALWAYS:
+    case cmPolicies::NEW:
+      // NEW behavior is to interpret the relative path with respect
+      // to the current source or binary directory.
+      switch (role) {
+        case PathForInput:
+          resultPath = cmSystemTools::CollapseFullPath(
+            relativePath, lg->GetCurrentSourceDirectory());
+          break;
+        case PathForOutput:
+          resultPath = cmSystemTools::CollapseFullPath(
+            relativePath, lg->GetCurrentBinaryDirectory());
+          break;
+      }
+      break;
+  }
+  return resultPath;
+}
diff --git a/Source/cmGeneratorExpressionEvaluationFile.h b/Source/cmGeneratorExpressionEvaluationFile.h
index 98727460e..2a790697f 100644
--- a/Source/cmGeneratorExpressionEvaluationFile.h
+++ b/Source/cmGeneratorExpressionEvaluationFile.h
@@ -6,11 +6,12 @@
 #include "cmConfigure.h" // IWYU pragma: keep
 
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <string>
 #include <vector>
 
 #include "cmGeneratorExpression.h"
-#include "cm_auto_ptr.hxx"
+#include "cmPolicies.h"
 #include "cm_sys_stat.h"
 
 class cmLocalGenerator;
@@ -20,8 +21,9 @@ class cmGeneratorExpressionEvaluationFile
 public:
   cmGeneratorExpressionEvaluationFile(
     const std::string& input,
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> outputFileExpr,
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> condition, bool inputIsContent);
+    std::unique_ptr<cmCompiledGeneratorExpression> outputFileExpr,
+    std::unique_ptr<cmCompiledGeneratorExpression> condition,
+    bool inputIsContent, cmPolicies::PolicyStatus policyStatusCMP0070);
 
   void Generate(cmLocalGenerator* lg);
 
@@ -35,12 +37,21 @@ private:
                 cmCompiledGeneratorExpression* inputExpression,
                 std::map<std::string, std::string>& outputFiles, mode_t perm);
 
+  enum PathRole
+  {
+    PathForInput,
+    PathForOutput
+  };
+  std::string FixRelativePath(std::string const& filePath, PathRole role,
+                              cmLocalGenerator* lg);
+
 private:
   const std::string Input;
-  const CM_AUTO_PTR<cmCompiledGeneratorExpression> OutputFileExpr;
-  const CM_AUTO_PTR<cmCompiledGeneratorExpression> Condition;
+  const std::unique_ptr<cmCompiledGeneratorExpression> OutputFileExpr;
+  const std::unique_ptr<cmCompiledGeneratorExpression> Condition;
   std::vector<std::string> Files;
   const bool InputIsContent;
+  cmPolicies::PolicyStatus PolicyStatusCMP0070;
 };
 
 #endif
diff --git a/Source/cmGeneratorExpressionEvaluator.cxx b/Source/cmGeneratorExpressionEvaluator.cxx
index 6ce4a8e72..c73d48601 100644
--- a/Source/cmGeneratorExpressionEvaluator.cxx
+++ b/Source/cmGeneratorExpressionEvaluator.cxx
@@ -25,13 +25,13 @@ std::string GeneratorExpressionContent::ProcessArbitraryContent(
   const cmGeneratorExpressionNode* node, const std::string& identifier,
   cmGeneratorExpressionContext* context,
   cmGeneratorExpressionDAGChecker* dagChecker,
-  std::vector<std::vector<cmGeneratorExpressionEvaluator*> >::const_iterator
+  std::vector<std::vector<cmGeneratorExpressionEvaluator*>>::const_iterator
     pit) const
 {
   std::string result;
 
   const std::vector<
-    std::vector<cmGeneratorExpressionEvaluator*> >::const_iterator pend =
+    std::vector<cmGeneratorExpressionEvaluator*>>::const_iterator pend =
     this->ParamChildren.end();
   for (; pit != pend; ++pit) {
     std::vector<cmGeneratorExpressionEvaluator*>::const_iterator it =
@@ -122,10 +122,10 @@ std::string GeneratorExpressionContent::EvaluateParameters(
 {
   const int numExpected = node->NumExpectedParameters();
   {
-    std::vector<std::vector<cmGeneratorExpressionEvaluator*> >::const_iterator
+    std::vector<std::vector<cmGeneratorExpressionEvaluator*>>::const_iterator
       pit = this->ParamChildren.begin();
     const std::vector<
-      std::vector<cmGeneratorExpressionEvaluator*> >::const_iterator pend =
+      std::vector<cmGeneratorExpressionEvaluator*>>::const_iterator pend =
       this->ParamChildren.end();
     const bool acceptsArbitraryContent =
       node->AcceptsArbitraryContentParameter();
@@ -153,7 +153,7 @@ std::string GeneratorExpressionContent::EvaluateParameters(
   }
 
   if ((numExpected > cmGeneratorExpressionNode::DynamicParameters &&
-       (unsigned int)numExpected != parameters.size())) {
+       static_cast<unsigned int>(numExpected) != parameters.size())) {
     if (numExpected == 0) {
       reportError(context, this->GetOriginalExpression(),
                   "$<" + identifier + "> expression requires no parameters.");
@@ -188,5 +188,5 @@ GeneratorExpressionContent::~GeneratorExpressionContent()
 {
   cmDeleteAll(this->IdentifierChildren);
   std::for_each(this->ParamChildren.begin(), this->ParamChildren.end(),
-                cmDeleteAll<std::vector<cmGeneratorExpressionEvaluator*> >);
+                cmDeleteAll<std::vector<cmGeneratorExpressionEvaluator*>>);
 }
diff --git a/Source/cmGeneratorExpressionEvaluator.h b/Source/cmGeneratorExpressionEvaluator.h
index a0a826ac6..92dac79ea 100644
--- a/Source/cmGeneratorExpressionEvaluator.h
+++ b/Source/cmGeneratorExpressionEvaluator.h
@@ -3,7 +3,7 @@
 #ifndef cmGeneratorExpressionEvaluator_h
 #define cmGeneratorExpressionEvaluator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <stddef.h>
 #include <string>
@@ -42,12 +42,12 @@ struct TextContent : public cmGeneratorExpressionEvaluator
   }
 
   std::string Evaluate(cmGeneratorExpressionContext*,
-                       cmGeneratorExpressionDAGChecker*) const CM_OVERRIDE
+                       cmGeneratorExpressionDAGChecker*) const override
   {
     return std::string(this->Content, this->Length);
   }
 
-  Type GetType() const CM_OVERRIDE
+  Type GetType() const override
   {
     return cmGeneratorExpressionEvaluator::Text;
   }
@@ -71,23 +71,23 @@ struct GeneratorExpressionContent : public cmGeneratorExpressionEvaluator
   }
 
   void SetParameters(
-    std::vector<std::vector<cmGeneratorExpressionEvaluator*> > const&
+    std::vector<std::vector<cmGeneratorExpressionEvaluator*>> const&
       parameters)
   {
     this->ParamChildren = parameters;
   }
 
-  Type GetType() const CM_OVERRIDE
+  Type GetType() const override
   {
     return cmGeneratorExpressionEvaluator::Generator;
   }
 
   std::string Evaluate(cmGeneratorExpressionContext* context,
-                       cmGeneratorExpressionDAGChecker*) const CM_OVERRIDE;
+                       cmGeneratorExpressionDAGChecker*) const override;
 
   std::string GetOriginalExpression() const;
 
-  ~GeneratorExpressionContent() CM_OVERRIDE;
+  ~GeneratorExpressionContent() override;
 
 private:
   std::string EvaluateParameters(const cmGeneratorExpressionNode* node,
@@ -100,12 +100,12 @@ private:
     const cmGeneratorExpressionNode* node, const std::string& identifier,
     cmGeneratorExpressionContext* context,
     cmGeneratorExpressionDAGChecker* dagChecker,
-    std::vector<std::vector<cmGeneratorExpressionEvaluator*> >::const_iterator
+    std::vector<std::vector<cmGeneratorExpressionEvaluator*>>::const_iterator
       pit) const;
 
 private:
   std::vector<cmGeneratorExpressionEvaluator*> IdentifierChildren;
-  std::vector<std::vector<cmGeneratorExpressionEvaluator*> > ParamChildren;
+  std::vector<std::vector<cmGeneratorExpressionEvaluator*>> ParamChildren;
   const char* StartContent;
   size_t ContentLength;
 };
diff --git a/Source/cmGeneratorExpressionNode.cxx b/Source/cmGeneratorExpressionNode.cxx
index a57d2a0d8..fea20ba87 100644
--- a/Source/cmGeneratorExpressionNode.cxx
+++ b/Source/cmGeneratorExpressionNode.cxx
@@ -17,16 +17,15 @@
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
 #include "cmTarget.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
-#include "cmConfigure.h"
 #include "cmsys/RegularExpression.hxx"
 #include "cmsys/String.h"
 #include <algorithm>
 #include <assert.h>
 #include <errno.h>
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <set>
 #include <sstream>
 #include <stdlib.h>
@@ -40,7 +39,7 @@ std::string cmGeneratorExpressionNode::EvaluateDependentExpression(
   cmGeneratorExpressionDAGChecker* dagChecker)
 {
   cmGeneratorExpression ge(context->Backtrace);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(prop);
+  std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(prop);
   cge->SetEvaluateForBuildsystem(context->EvaluateForBuildsystem);
   std::string result =
     cge->Evaluate(lg, context->Config, context->Quiet, headTarget,
@@ -58,15 +57,15 @@ static const struct ZeroNode : public cmGeneratorExpressionNode
 {
   ZeroNode() {}
 
-  bool GeneratesContent() const CM_OVERRIDE { return false; }
+  bool GeneratesContent() const override { return false; }
 
-  bool AcceptsArbitraryContentParameter() const CM_OVERRIDE { return true; }
+  bool AcceptsArbitraryContentParameter() const override { return true; }
 
-  std::string Evaluate(const std::vector<std::string>& /*parameters*/,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& /*parameters*/,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return std::string();
   }
@@ -76,13 +75,13 @@ static const struct OneNode : public cmGeneratorExpressionNode
 {
   OneNode() {}
 
-  bool AcceptsArbitraryContentParameter() const CM_OVERRIDE { return true; }
+  bool AcceptsArbitraryContentParameter() const override { return true; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return parameters.front();
   }
@@ -129,11 +128,11 @@ static const struct NotNode : public cmGeneratorExpressionNode
 {
   NotNode() {}
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     if (*parameters.begin() != "0" && *parameters.begin() != "1") {
       reportError(
@@ -149,13 +148,13 @@ static const struct BoolNode : public cmGeneratorExpressionNode
 {
   BoolNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 1; }
+  int NumExpectedParameters() const override { return 1; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return !cmSystemTools::IsOff(parameters.begin()->c_str()) ? "1" : "0";
   }
@@ -165,12 +164,12 @@ static const struct IfNode : public cmGeneratorExpressionNode
 {
   IfNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 3; }
+  int NumExpectedParameters() const override { return 3; }
 
   std::string Evaluate(const std::vector<std::string>& parameters,
                        cmGeneratorExpressionContext* context,
                        const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker*) const CM_OVERRIDE
+                       cmGeneratorExpressionDAGChecker*) const override
   {
     if (parameters[0] != "1" && parameters[0] != "0") {
       reportError(context, content->GetOriginalExpression(),
@@ -186,13 +185,13 @@ static const struct StrEqualNode : public cmGeneratorExpressionNode
 {
   StrEqualNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 2; }
+  int NumExpectedParameters() const override { return 2; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return *parameters.begin() == parameters[1] ? "1" : "0";
   }
@@ -202,13 +201,13 @@ static const struct EqualNode : public cmGeneratorExpressionNode
 {
   EqualNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 2; }
+  int NumExpectedParameters() const override { return 2; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     char* pEnd;
 
@@ -280,13 +279,13 @@ static const struct LowerCaseNode : public cmGeneratorExpressionNode
 {
   LowerCaseNode() {}
 
-  bool AcceptsArbitraryContentParameter() const CM_OVERRIDE { return true; }
+  bool AcceptsArbitraryContentParameter() const override { return true; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return cmSystemTools::LowerCase(parameters.front());
   }
@@ -296,13 +295,13 @@ static const struct UpperCaseNode : public cmGeneratorExpressionNode
 {
   UpperCaseNode() {}
 
-  bool AcceptsArbitraryContentParameter() const CM_OVERRIDE { return true; }
+  bool AcceptsArbitraryContentParameter() const override { return true; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return cmSystemTools::UpperCase(parameters.front());
   }
@@ -312,13 +311,13 @@ static const struct MakeCIdentifierNode : public cmGeneratorExpressionNode
 {
   MakeCIdentifierNode() {}
 
-  bool AcceptsArbitraryContentParameter() const CM_OVERRIDE { return true; }
+  bool AcceptsArbitraryContentParameter() const override { return true; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return cmSystemTools::MakeCidentifier(parameters.front());
   }
@@ -328,13 +327,13 @@ static const struct Angle_RNode : public cmGeneratorExpressionNode
 {
   Angle_RNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 0; }
+  int NumExpectedParameters() const override { return 0; }
 
-  std::string Evaluate(const std::vector<std::string>& /*parameters*/,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& /*parameters*/,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return ">";
   }
@@ -344,13 +343,13 @@ static const struct CommaNode : public cmGeneratorExpressionNode
 {
   CommaNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 0; }
+  int NumExpectedParameters() const override { return 0; }
 
-  std::string Evaluate(const std::vector<std::string>& /*parameters*/,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& /*parameters*/,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return ",";
   }
@@ -360,13 +359,13 @@ static const struct SemicolonNode : public cmGeneratorExpressionNode
 {
   SemicolonNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 0; }
+  int NumExpectedParameters() const override { return 0; }
 
-  std::string Evaluate(const std::vector<std::string>& /*parameters*/,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& /*parameters*/,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return ";";
   }
@@ -376,7 +375,7 @@ struct CompilerIdNode : public cmGeneratorExpressionNode
 {
   CompilerIdNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return OneOrZeroParameters; }
+  int NumExpectedParameters() const override { return OneOrZeroParameters; }
 
   std::string EvaluateWithLanguage(const std::vector<std::string>& parameters,
                                    cmGeneratorExpressionContext* context,
@@ -428,11 +427,11 @@ static const struct CCompilerIdNode : public CompilerIdNode
 {
   CCompilerIdNode() {}
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* dagChecker) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* dagChecker) const override
   {
     if (!context->HeadTarget) {
       reportError(
@@ -450,11 +449,11 @@ static const struct CXXCompilerIdNode : public CompilerIdNode
 {
   CXXCompilerIdNode() {}
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* dagChecker) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* dagChecker) const override
   {
     if (!context->HeadTarget) {
       reportError(
@@ -472,7 +471,7 @@ struct CompilerVersionNode : public cmGeneratorExpressionNode
 {
   CompilerVersionNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return OneOrZeroParameters; }
+  int NumExpectedParameters() const override { return OneOrZeroParameters; }
 
   std::string EvaluateWithLanguage(const std::vector<std::string>& parameters,
                                    cmGeneratorExpressionContext* context,
@@ -509,11 +508,11 @@ static const struct CCompilerVersionNode : public CompilerVersionNode
 {
   CCompilerVersionNode() {}
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* dagChecker) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* dagChecker) const override
   {
     if (!context->HeadTarget) {
       reportError(
@@ -531,11 +530,11 @@ static const struct CxxCompilerVersionNode : public CompilerVersionNode
 {
   CxxCompilerVersionNode() {}
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* dagChecker) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* dagChecker) const override
   {
     if (!context->HeadTarget) {
       reportError(
@@ -553,13 +552,13 @@ struct PlatformIdNode : public cmGeneratorExpressionNode
 {
   PlatformIdNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return OneOrZeroParameters; }
+  int NumExpectedParameters() const override { return OneOrZeroParameters; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     const char* platformId =
       context->LG->GetMakefile()->GetSafeDefinition("CMAKE_SYSTEM_NAME");
@@ -582,13 +581,13 @@ static const struct VersionGreaterNode : public cmGeneratorExpressionNode
 {
   VersionGreaterNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 2; }
+  int NumExpectedParameters() const override { return 2; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return cmSystemTools::VersionCompare(cmSystemTools::OP_GREATER,
                                          parameters.front().c_str(),
@@ -602,13 +601,13 @@ static const struct VersionGreaterEqNode : public cmGeneratorExpressionNode
 {
   VersionGreaterEqNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 2; }
+  int NumExpectedParameters() const override { return 2; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return cmSystemTools::VersionCompare(cmSystemTools::OP_GREATER_EQUAL,
                                          parameters.front().c_str(),
@@ -622,13 +621,13 @@ static const struct VersionLessNode : public cmGeneratorExpressionNode
 {
   VersionLessNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 2; }
+  int NumExpectedParameters() const override { return 2; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return cmSystemTools::VersionCompare(cmSystemTools::OP_LESS,
                                          parameters.front().c_str(),
@@ -642,13 +641,13 @@ static const struct VersionLessEqNode : public cmGeneratorExpressionNode
 {
   VersionLessEqNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 2; }
+  int NumExpectedParameters() const override { return 2; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return cmSystemTools::VersionCompare(cmSystemTools::OP_LESS_EQUAL,
                                          parameters.front().c_str(),
@@ -662,13 +661,13 @@ static const struct VersionEqualNode : public cmGeneratorExpressionNode
 {
   VersionEqualNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 2; }
+  int NumExpectedParameters() const override { return 2; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return cmSystemTools::VersionCompare(cmSystemTools::OP_EQUAL,
                                          parameters.front().c_str(),
@@ -682,11 +681,11 @@ static const struct LinkOnlyNode : public cmGeneratorExpressionNode
 {
   LinkOnlyNode() {}
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* dagChecker) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* dagChecker) const override
   {
     if (!dagChecker) {
       reportError(context, content->GetOriginalExpression(),
@@ -704,13 +703,13 @@ static const struct ConfigurationNode : public cmGeneratorExpressionNode
 {
   ConfigurationNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 0; }
+  int NumExpectedParameters() const override { return 0; }
 
-  std::string Evaluate(const std::vector<std::string>& /*parameters*/,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& /*parameters*/,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     context->HadContextSensitiveCondition = true;
     return context->Config;
@@ -721,17 +720,16 @@ static const struct ConfigurationTestNode : public cmGeneratorExpressionNode
 {
   ConfigurationTestNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return OneOrZeroParameters; }
+  int NumExpectedParameters() const override { return OneOrZeroParameters; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     if (parameters.empty()) {
-      return configurationNode.Evaluate(parameters, context, content,
-                                        CM_NULLPTR);
+      return configurationNode.Evaluate(parameters, context, content, nullptr);
     }
     static cmsys::RegularExpression configValidator("^[A-Za-z0-9_]*$");
     if (!configValidator.find(*parameters.begin())) {
@@ -750,8 +748,8 @@ static const struct ConfigurationTestNode : public cmGeneratorExpressionNode
     }
 
     if (context->CurrentTarget && context->CurrentTarget->IsImported()) {
-      const char* loc = CM_NULLPTR;
-      const char* imp = CM_NULLPTR;
+      const char* loc = nullptr;
+      const char* imp = nullptr;
       std::string suffix;
       if (context->CurrentTarget->Target->GetMappedConfig(
             context->Config, &loc, &imp, suffix)) {
@@ -781,15 +779,15 @@ static const struct JoinNode : public cmGeneratorExpressionNode
 {
   JoinNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 2; }
+  int NumExpectedParameters() const override { return 2; }
 
-  bool AcceptsArbitraryContentParameter() const CM_OVERRIDE { return true; }
+  bool AcceptsArbitraryContentParameter() const override { return true; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     std::vector<std::string> list;
     cmSystemTools::ExpandListArgument(parameters.front(), list);
@@ -801,19 +799,19 @@ static const struct CompileLanguageNode : public cmGeneratorExpressionNode
 {
   CompileLanguageNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return OneOrZeroParameters; }
+  int NumExpectedParameters() const override { return OneOrZeroParameters; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* dagChecker) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* dagChecker) const override
   {
     if (context->Language.empty()) {
       reportError(
         context, content->GetOriginalExpression(),
         "$<COMPILE_LANGUAGE:...> may only be used to specify include "
-        "directories compile definitions, compile options and to evaluate "
+        "directories, compile definitions, compile options, and to evaluate "
         "components of the file(GENERATE) command.");
       return std::string();
     }
@@ -864,7 +862,7 @@ static const struct CompileLanguageNode : public cmGeneratorExpressionNode
 #define TRANSITIVE_PROPERTY_NAME(PROPERTY) , "INTERFACE_" #PROPERTY
 
 static const char* targetPropertyTransitiveWhitelist[] = {
-  CM_NULLPTR CM_FOR_EACH_TRANSITIVE_PROPERTY_NAME(TRANSITIVE_PROPERTY_NAME)
+  nullptr CM_FOR_EACH_TRANSITIVE_PROPERTY_NAME(TRANSITIVE_PROPERTY_NAME)
 };
 
 #undef TRANSITIVE_PROPERTY_NAME
@@ -879,13 +877,12 @@ std::string getLinkedTargetsContent(
   std::string linkedTargetsContent;
   std::string sep;
   std::string depString;
-  for (typename std::vector<T>::const_iterator it = libraries.begin();
-       it != libraries.end(); ++it) {
+  for (T const& l : libraries) {
     // Broken code can have a target in its own link interface.
     // Don't follow such link interface entries so as not to create a
     // self-referencing loop.
-    if (it->Target && it->Target != target) {
-      depString += sep + "$<TARGET_PROPERTY:" + it->Target->GetName() + "," +
+    if (l.Target && l.Target != target) {
+      depString += sep + "$<TARGET_PROPERTY:" + l.Target->GetName() + "," +
         interfacePropertyName + ">";
       sep = ";";
     }
@@ -906,13 +903,13 @@ static const struct TargetPropertyNode : public cmGeneratorExpressionNode
   TargetPropertyNode() {}
 
   // This node handles errors on parameter count itself.
-  int NumExpectedParameters() const CM_OVERRIDE { return OneOrMoreParameters; }
+  int NumExpectedParameters() const override { return OneOrMoreParameters; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* dagCheckerParent) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* dagCheckerParent) const override
   {
     if (parameters.size() != 1 && parameters.size() != 2) {
       reportError(
@@ -1199,21 +1196,21 @@ static const struct TargetNameNode : public cmGeneratorExpressionNode
 {
   TargetNameNode() {}
 
-  bool GeneratesContent() const CM_OVERRIDE { return true; }
+  bool GeneratesContent() const override { return true; }
 
-  bool AcceptsArbitraryContentParameter() const CM_OVERRIDE { return true; }
-  bool RequiresLiteralInput() const CM_OVERRIDE { return true; }
+  bool AcceptsArbitraryContentParameter() const override { return true; }
+  bool RequiresLiteralInput() const override { return true; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* /*context*/,
-                       const GeneratorExpressionContent* /*content*/,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* /*context*/,
+    const GeneratorExpressionContent* /*content*/,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     return parameters.front();
   }
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 1; }
+  int NumExpectedParameters() const override { return 1; }
 
 } targetNameNode;
 
@@ -1221,11 +1218,11 @@ static const struct TargetObjectsNode : public cmGeneratorExpressionNode
 {
   TargetObjectsNode() {}
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     std::string tgtName = parameters.front();
     cmGeneratorTarget* gt = context->LG->FindGeneratorTargetToUse(tgtName);
@@ -1260,8 +1257,8 @@ static const struct TargetObjectsNode : public cmGeneratorExpressionNode
     std::vector<std::string> objects;
 
     if (gt->IsImported()) {
-      const char* loc = CM_NULLPTR;
-      const char* imp = CM_NULLPTR;
+      const char* loc = nullptr;
+      const char* imp = nullptr;
       std::string suffix;
       if (gt->Target->GetMappedConfig(context->Config, &loc, &imp, suffix)) {
         cmSystemTools::ExpandListArgument(loc, objects);
@@ -1283,17 +1280,15 @@ static const struct TargetObjectsNode : public cmGeneratorExpressionNode
         context->HadContextSensitiveCondition = true;
       }
 
-      for (std::vector<std::string>::iterator oi = objects.begin();
-           oi != objects.end(); ++oi) {
-        *oi = obj_dir + *oi;
+      for (std::string& o : objects) {
+        o = obj_dir + o;
       }
     }
 
     // Create the cmSourceFile instances in the referencing directory.
     cmMakefile* mf = context->LG->GetMakefile();
-    for (std::vector<std::string>::iterator oi = objects.begin();
-         oi != objects.end(); ++oi) {
-      mf->AddTargetObject(tgtName, *oi);
+    for (std::string& o : objects) {
+      mf->AddTargetObject(tgtName, o);
     }
 
     return cmJoin(objects, ";");
@@ -1304,13 +1299,13 @@ static const struct CompileFeaturesNode : public cmGeneratorExpressionNode
 {
   CompileFeaturesNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return OneOrMoreParameters; }
+  int NumExpectedParameters() const override { return OneOrMoreParameters; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* dagChecker) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* dagChecker) const override
   {
     cmGeneratorTarget const* target = context->HeadTarget;
     if (!target) {
@@ -1322,21 +1317,20 @@ static const struct CompileFeaturesNode : public cmGeneratorExpressionNode
     }
     context->HadHeadSensitiveCondition = true;
 
-    typedef std::map<std::string, std::vector<std::string> > LangMap;
+    typedef std::map<std::string, std::vector<std::string>> LangMap;
     static LangMap availableFeatures;
 
     LangMap testedFeatures;
 
-    for (std::vector<std::string>::const_iterator it = parameters.begin();
-         it != parameters.end(); ++it) {
+    for (std::string const& p : parameters) {
       std::string error;
       std::string lang;
       if (!context->LG->GetMakefile()->CompileFeatureKnown(
-            context->HeadTarget->Target, *it, lang, &error)) {
+            context->HeadTarget->Target, p, lang, &error)) {
         reportError(context, content->GetOriginalExpression(), error);
         return std::string();
       }
-      testedFeatures[lang].push_back(*it);
+      testedFeatures[lang].push_back(p);
 
       if (availableFeatures.find(lang) == availableFeatures.end()) {
         const char* featuresKnown =
@@ -1352,15 +1346,13 @@ static const struct CompileFeaturesNode : public cmGeneratorExpressionNode
 
     bool evalLL = dagChecker && dagChecker->EvaluatingLinkLibraries();
 
-    for (LangMap::const_iterator lit = testedFeatures.begin();
-         lit != testedFeatures.end(); ++lit) {
+    for (auto const& lit : testedFeatures) {
       std::vector<std::string> const& langAvailable =
-        availableFeatures[lit->first];
+        availableFeatures[lit.first];
       const char* standardDefault = context->LG->GetMakefile()->GetDefinition(
-        "CMAKE_" + lit->first + "_STANDARD_DEFAULT");
-      for (std::vector<std::string>::const_iterator it = lit->second.begin();
-           it != lit->second.end(); ++it) {
-        if (std::find(langAvailable.begin(), langAvailable.end(), *it) ==
+        "CMAKE_" + lit.first + "_STANDARD_DEFAULT");
+      for (std::string const& it : lit.second) {
+        if (std::find(langAvailable.begin(), langAvailable.end(), it) ==
             langAvailable.end()) {
           return "0";
         }
@@ -1370,14 +1362,14 @@ static const struct CompileFeaturesNode : public cmGeneratorExpressionNode
           continue;
         }
         if (!context->LG->GetMakefile()->HaveStandardAvailable(
-              target->Target, lit->first, *it)) {
+              target->Target, lit.first, it)) {
           if (evalLL) {
-            const char* l = target->GetProperty(lit->first + "_STANDARD");
+            const char* l = target->GetProperty(lit.first + "_STANDARD");
             if (!l) {
               l = standardDefault;
             }
             assert(l);
-            context->MaxLanguageStandard[target][lit->first] = l;
+            context->MaxLanguageStandard[target][lit.first] = l;
           } else {
             return "0";
           }
@@ -1389,10 +1381,10 @@ static const struct CompileFeaturesNode : public cmGeneratorExpressionNode
 } compileFeaturesNode;
 
 static const char* targetPolicyWhitelist[] = {
-  CM_NULLPTR
+  nullptr
 #define TARGET_POLICY_STRING(POLICY) , #POLICY
 
-    CM_FOR_EACH_TARGET_POLICY(TARGET_POLICY_STRING)
+  CM_FOR_EACH_TARGET_POLICY(TARGET_POLICY_STRING)
 
 #undef TARGET_POLICY_STRING
 };
@@ -1432,13 +1424,13 @@ static const struct TargetPolicyNode : public cmGeneratorExpressionNode
 {
   TargetPolicyNode() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 1; }
+  int NumExpectedParameters() const override { return 1; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     if (!context->HeadTarget) {
       reportError(
@@ -1493,14 +1485,14 @@ static const struct InstallPrefixNode : public cmGeneratorExpressionNode
 {
   InstallPrefixNode() {}
 
-  bool GeneratesContent() const CM_OVERRIDE { return true; }
-  int NumExpectedParameters() const CM_OVERRIDE { return 0; }
+  bool GeneratesContent() const override { return true; }
+  int NumExpectedParameters() const override { return 0; }
 
-  std::string Evaluate(const std::vector<std::string>& /*parameters*/,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& /*parameters*/,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     reportError(context, content->GetOriginalExpression(),
                 "INSTALL_PREFIX is a marker for install(EXPORT) only.  It "
@@ -1713,13 +1705,13 @@ struct TargetFilesystemArtifact : public cmGeneratorExpressionNode
 {
   TargetFilesystemArtifact() {}
 
-  int NumExpectedParameters() const CM_OVERRIDE { return 1; }
+  int NumExpectedParameters() const override { return 1; }
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* dagChecker) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* dagChecker) const override
   {
     // Lookup the referenced target.
     std::string name = *parameters.begin();
@@ -1795,11 +1787,11 @@ static const struct ShellPathNode : public cmGeneratorExpressionNode
 {
   ShellPathNode() {}
 
-  std::string Evaluate(const std::vector<std::string>& parameters,
-                       cmGeneratorExpressionContext* context,
-                       const GeneratorExpressionContent* content,
-                       cmGeneratorExpressionDAGChecker* /*dagChecker*/) const
-    CM_OVERRIDE
+  std::string Evaluate(
+    const std::vector<std::string>& parameters,
+    cmGeneratorExpressionContext* context,
+    const GeneratorExpressionContent* content,
+    cmGeneratorExpressionDAGChecker* /*dagChecker*/) const override
   {
     if (!cmSystemTools::FileIsFullPath(parameters.front())) {
       reportError(context, content->GetOriginalExpression(),
@@ -1873,7 +1865,7 @@ const cmGeneratorExpressionNode* cmGeneratorExpressionNode::GetNode(
   }
   NodeMap::const_iterator i = nodeMap.find(identifier);
   if (i == nodeMap.end()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return i->second;
 }
diff --git a/Source/cmGeneratorExpressionParser.cxx b/Source/cmGeneratorExpressionParser.cxx
index c33349a63..278de0444 100644
--- a/Source/cmGeneratorExpressionParser.cxx
+++ b/Source/cmGeneratorExpressionParser.cxx
@@ -97,7 +97,7 @@ void cmGeneratorExpressionParser::ParseGeneratorExpression(
     return;
   }
 
-  std::vector<std::vector<cmGeneratorExpressionEvaluator*> > parameters;
+  std::vector<std::vector<cmGeneratorExpressionEvaluator*>> parameters;
   std::vector<std::vector<cmGeneratorExpressionToken>::const_iterator>
     commaTokens;
   std::vector<cmGeneratorExpressionToken>::const_iterator colonToken;
diff --git a/Source/cmGeneratorTarget.cxx b/Source/cmGeneratorTarget.cxx
index c9924f670..103d0340e 100644
--- a/Source/cmGeneratorTarget.cxx
+++ b/Source/cmGeneratorTarget.cxx
@@ -7,11 +7,13 @@
 #include <assert.h>
 #include <errno.h>
 #include <iterator>
+#include <memory> // IWYU pragma: keep
 #include <queue>
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unordered_set>
 
 #include "cmAlgorithms.h"
 #include "cmComputeLinkInformation.h"
@@ -31,8 +33,6 @@
 #include "cmTarget.h"
 #include "cmTargetLinkLibraryType.h"
 #include "cmTargetPropertyComputer.h"
-#include "cm_auto_ptr.hxx"
-#include "cm_unordered_set.hxx"
 #include "cmake.h"
 
 class cmMessenger;
@@ -64,13 +64,13 @@ class cmGeneratorTarget::TargetPropertyEntry
   static cmLinkImplItem NoLinkImplItem;
 
 public:
-  TargetPropertyEntry(CM_AUTO_PTR<cmCompiledGeneratorExpression> cge,
+  TargetPropertyEntry(std::unique_ptr<cmCompiledGeneratorExpression> cge,
                       cmLinkImplItem const& item = NoLinkImplItem)
-    : ge(cge)
+    : ge(std::move(cge))
     , LinkImplItem(item)
   {
   }
-  const CM_AUTO_PTR<cmCompiledGeneratorExpression> ge;
+  const std::unique_ptr<cmCompiledGeneratorExpression> ge;
   cmLinkImplItem const& LinkImplItem;
 };
 cmLinkImplItem cmGeneratorTarget::TargetPropertyEntry::NoLinkImplItem;
@@ -84,9 +84,10 @@ void CreatePropertyGeneratorExpressions(
   for (std::vector<std::string>::const_iterator it = entries.begin();
        it != entries.end(); ++it, ++btIt) {
     cmGeneratorExpression ge(*btIt);
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(*it);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(*it);
     cge->SetEvaluateForBuildsystem(evaluateForBuildsystem);
-    items.push_back(new cmGeneratorTarget::TargetPropertyEntry(cge));
+    items.push_back(
+      new cmGeneratorTarget::TargetPropertyEntry(std::move(cge)));
   }
 }
 
@@ -150,11 +151,8 @@ cmGeneratorTarget::~cmGeneratorTarget()
 const char* cmGeneratorTarget::GetSourcesProperty() const
 {
   std::vector<std::string> values;
-  for (std::vector<cmGeneratorTarget::TargetPropertyEntry *>::const_iterator
-         it = this->SourceEntries.begin(),
-         end = this->SourceEntries.end();
-       it != end; ++it) {
-    values.push_back((*it)->ge->GetInput());
+  for (TargetPropertyEntry* se : this->SourceEntries) {
+    values.push_back(se->ge->GetInput());
   }
   static std::string value;
   value.clear();
@@ -204,14 +202,14 @@ const char* cmGeneratorTarget::GetProperty(const std::string& prop) const
   if (!cmTargetPropertyComputer::PassesWhitelist(
         this->GetType(), prop, this->Makefile->GetMessenger(),
         this->GetBacktrace())) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   if (const char* result = cmTargetPropertyComputer::GetProperty(
         this, prop, this->Makefile->GetMessenger(), this->GetBacktrace())) {
     return result;
   }
   if (cmSystemTools::GetFatalErrorOccured()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return this->Target->GetProperty(prop);
 }
@@ -299,9 +297,8 @@ std::string cmGeneratorTarget::GetOutputName(
     props.push_back("OUTPUT_NAME");
 
     std::string outName;
-    for (std::vector<std::string>::const_iterator it = props.begin();
-         it != props.end(); ++it) {
-      if (const char* outNameProp = this->GetProperty(*it)) {
+    for (std::string const& p : props) {
+      if (const char* outNameProp = this->GetProperty(p)) {
         outName = outNameProp;
         break;
       }
@@ -313,7 +310,7 @@ std::string cmGeneratorTarget::GetOutputName(
 
     // Now evaluate genex and update the previously-prepared map entry.
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(outName);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(outName);
     i->second = cge->Evaluate(this->LocalGenerator, config);
   } else if (i->second.empty()) {
     // An empty map entry indicates we have been called recursively
@@ -326,15 +323,21 @@ std::string cmGeneratorTarget::GetOutputName(
   return i->second;
 }
 
+void cmGeneratorTarget::ClearSourcesCache()
+{
+  this->KindedSourcesMap.clear();
+  this->LinkImplementationLanguageIsContextDependent = true;
+  this->Objects.clear();
+}
+
 void cmGeneratorTarget::AddSourceCommon(const std::string& src)
 {
   cmListFileBacktrace lfbt = this->Makefile->GetBacktrace();
   cmGeneratorExpression ge(lfbt);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(src);
+  std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(src);
   cge->SetEvaluateForBuildsystem(true);
-  this->SourceEntries.push_back(new TargetPropertyEntry(cge));
-  this->KindedSourcesMap.clear();
-  this->LinkImplementationLanguageIsContextDependent = true;
+  this->SourceEntries.push_back(new TargetPropertyEntry(std::move(cge)));
+  this->ClearSourcesCache();
 }
 
 void cmGeneratorTarget::AddSource(const std::string& src)
@@ -357,13 +360,14 @@ void cmGeneratorTarget::AddIncludeDirectory(const std::string& src,
   this->Target->InsertInclude(src, this->Makefile->GetBacktrace(), before);
   cmListFileBacktrace lfbt = this->Makefile->GetBacktrace();
   cmGeneratorExpression ge(lfbt);
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(src);
+  std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(src);
   cge->SetEvaluateForBuildsystem(true);
   // Insert before begin/end
   std::vector<TargetPropertyEntry*>::iterator pos = before
     ? this->IncludeDirectoriesEntries.begin()
     : this->IncludeDirectoriesEntries.end();
-  this->IncludeDirectoriesEntries.insert(pos, new TargetPropertyEntry(cge));
+  this->IncludeDirectoriesEntries.insert(
+    pos, new TargetPropertyEntry(std::move(cge)));
 }
 
 std::vector<cmSourceFile*> const* cmGeneratorTarget::GetSourceDepends(
@@ -373,7 +377,7 @@ std::vector<cmSourceFile*> const* cmGeneratorTarget::GetSourceDepends(
   if (i != this->SourceDepends.end()) {
     return &i->second.Depends;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 static void handleSystemIncludesDep(
@@ -408,10 +412,9 @@ static void handleSystemIncludesDep(
 #define IMPLEMENT_VISIT(KIND)                                                 \
   {                                                                           \
     KindedSources const& kinded = this->GetKindedSources(config);             \
-    for (std::vector<SourceAndKind>::const_iterator                           \
-         si = kinded.Sources.begin(); si != kinded.Sources.end(); ++si) {     \
-      if (si->Kind == KIND) {                                                 \
-        data.push_back(si->Source);                                           \
+    for (SourceAndKind const& s : kinded.Sources) {                           \
+      if (s.Kind == KIND) {                                                   \
+        data.push_back(s.Source);                                             \
       }                                                                       \
     }                                                                         \
   }
@@ -426,9 +429,8 @@ void cmGeneratorTarget::GetObjectSources(
     return;
   }
 
-  for (std::vector<cmSourceFile const*>::const_iterator it = data.begin();
-       it != data.end(); ++it) {
-    this->Objects[*it];
+  for (cmSourceFile const* it : data) {
+    this->Objects[it];
   }
 
   this->LocalGenerator->ComputeObjectFilenames(this->Objects, this);
@@ -445,10 +447,9 @@ void cmGeneratorTarget::ComputeObjectMapping()
   if (configs.empty()) {
     configs.push_back("");
   }
-  for (std::vector<std::string>::const_iterator ci = configs.begin();
-       ci != configs.end(); ++ci) {
+  for (std::string const& c : configs) {
     std::vector<cmSourceFile const*> sourceFiles;
-    this->GetObjectSources(sourceFiles, *ci);
+    this->GetObjectSources(sourceFiles, c);
   }
 }
 
@@ -511,7 +512,7 @@ bool cmGeneratorTarget::IsIPOEnabled(std::string const& lang,
   }
 
   // Note: check consistency with messages from CheckIPOSupported
-  const char* message = CM_NULLPTR;
+  const char* message = nullptr;
   if (!this->Makefile->IsOn("_CMAKE_" + lang + "_IPO_SUPPORTED_BY_CMAKE")) {
     message = "CMake doesn't support IPO for current compiler";
   } else if (!this->Makefile->IsOn("_CMAKE_" + lang +
@@ -553,7 +554,7 @@ const char* cmGeneratorTarget::GetCustomObjectExtension() const
     extension = ".ptx";
     return extension.c_str();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmGeneratorTarget::AddExplicitObjectName(cmSourceFile const* sf)
@@ -649,11 +650,10 @@ std::set<cmLinkItem> const& cmGeneratorTarget::GetUtilityItems() const
   if (!this->UtilityItemsDone) {
     this->UtilityItemsDone = true;
     std::set<std::string> const& utilities = this->GetUtilities();
-    for (std::set<std::string>::const_iterator i = utilities.begin();
-         i != utilities.end(); ++i) {
+    for (std::string const& i : utilities) {
       cmGeneratorTarget* gt =
-        this->LocalGenerator->FindGeneratorTargetToUse(*i);
-      this->UtilityItems.insert(cmLinkItem(*i, gt));
+        this->LocalGenerator->FindGeneratorTargetToUse(i);
+      this->UtilityItems.insert(cmLinkItem(i, gt));
     }
   }
   return this->UtilityItems;
@@ -743,34 +743,29 @@ bool cmGeneratorTarget::IsSystemIncludeDirectory(
     config_upper = cmSystemTools::UpperCase(config);
   }
 
-  typedef std::map<std::string, std::vector<std::string> > IncludeCacheType;
+  typedef std::map<std::string, std::vector<std::string>> IncludeCacheType;
   IncludeCacheType::const_iterator iter =
     this->SystemIncludesCache.find(config_upper);
 
   if (iter == this->SystemIncludesCache.end()) {
     cmGeneratorExpressionDAGChecker dagChecker(
-      this->GetName(), "SYSTEM_INCLUDE_DIRECTORIES", CM_NULLPTR, CM_NULLPTR);
+      this->GetName(), "SYSTEM_INCLUDE_DIRECTORIES", nullptr, nullptr);
 
     bool excludeImported = this->GetPropertyAsBool("NO_SYSTEM_FROM_IMPORTED");
 
     std::vector<std::string> result;
-    for (std::set<std::string>::const_iterator it =
-           this->Target->GetSystemIncludeDirectories().begin();
-         it != this->Target->GetSystemIncludeDirectories().end(); ++it) {
+    for (std::string const& it : this->Target->GetSystemIncludeDirectories()) {
       cmGeneratorExpression ge;
       cmSystemTools::ExpandListArgument(
-        ge.Parse(*it)->Evaluate(this->LocalGenerator, config, false, this,
-                                &dagChecker),
+        ge.Parse(it)->Evaluate(this->LocalGenerator, config, false, this,
+                               &dagChecker),
         result);
     }
 
     std::vector<cmGeneratorTarget const*> const& deps =
       this->GetLinkImplementationClosure(config);
-    for (std::vector<cmGeneratorTarget const *>::const_iterator
-           li = deps.begin(),
-           le = deps.end();
-         li != le; ++li) {
-      handleSystemIncludesDep(this->LocalGenerator, *li, config, this,
+    for (cmGeneratorTarget const* dep : deps) {
+      handleSystemIncludesDep(this->LocalGenerator, dep, config, this,
                               &dagChecker, result, excludeImported);
     }
 
@@ -798,17 +793,14 @@ static void AddInterfaceEntries(
 {
   if (cmLinkImplementationLibraries const* impl =
         thisTarget->GetLinkImplementationLibraries(config)) {
-    for (std::vector<cmLinkImplItem>::const_iterator
-           it = impl->Libraries.begin(),
-           end = impl->Libraries.end();
-         it != end; ++it) {
-      if (it->Target) {
-        std::string genex = "$<TARGET_PROPERTY:" + *it + "," + prop + ">";
-        cmGeneratorExpression ge(it->Backtrace);
-        CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(genex);
+    for (cmLinkImplItem const& lib : impl->Libraries) {
+      if (lib.Target) {
+        std::string genex = "$<TARGET_PROPERTY:" + lib + "," + prop + ">";
+        cmGeneratorExpression ge(lib.Backtrace);
+        std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(genex);
         cge->SetEvaluateForBuildsystem(true);
         entries.push_back(
-          new cmGeneratorTarget::TargetPropertyEntry(cge, *it));
+          new cmGeneratorTarget::TargetPropertyEntry(std::move(cge), lib));
       }
     }
   }
@@ -817,7 +809,7 @@ static void AddInterfaceEntries(
 static bool processSources(
   cmGeneratorTarget const* tgt,
   const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
-  std::vector<std::string>& srcs, CM_UNORDERED_SET<std::string>& uniqueSrcs,
+  std::vector<std::string>& srcs, std::unordered_set<std::string>& uniqueSrcs,
   cmGeneratorExpressionDAGChecker* dagChecker, std::string const& config,
   bool debugSources)
 {
@@ -825,25 +817,20 @@ static bool processSources(
 
   bool contextDependent = false;
 
-  for (std::vector<cmGeneratorTarget::TargetPropertyEntry *>::const_iterator
-         it = entries.begin(),
-         end = entries.end();
-       it != end; ++it) {
-    cmLinkImplItem const& item = (*it)->LinkImplItem;
+  for (cmGeneratorTarget::TargetPropertyEntry* entry : entries) {
+    cmLinkImplItem const& item = entry->LinkImplItem;
     std::string const& targetName = item;
     std::vector<std::string> entrySources;
     cmSystemTools::ExpandListArgument(
-      (*it)->ge->Evaluate(tgt->GetLocalGenerator(), config, false, tgt, tgt,
+      entry->ge->Evaluate(tgt->GetLocalGenerator(), config, false, tgt, tgt,
                           dagChecker),
       entrySources);
 
-    if ((*it)->ge->GetHadContextSensitiveCondition()) {
+    if (entry->ge->GetHadContextSensitiveCondition()) {
       contextDependent = true;
     }
 
-    for (std::vector<std::string>::iterator i = entrySources.begin();
-         i != entrySources.end(); ++i) {
-      std::string& src = *i;
+    for (std::string& src : entrySources) {
       cmSourceFile* sf = mf->GetOrCreateSource(src);
       std::string e;
       std::string fullPath = sf->GetFullPath(&e);
@@ -874,10 +861,7 @@ static bool processSources(
       src = fullPath;
     }
     std::string usedSources;
-    for (std::vector<std::string>::iterator li = entrySources.begin();
-         li != entrySources.end(); ++li) {
-      std::string src = *li;
-
+    for (std::string const& src : entrySources) {
       if (uniqueSrcs.insert(src).second) {
         srcs.push_back(src);
         if (debugSources) {
@@ -889,7 +873,7 @@ static bool processSources(
       tgt->GetLocalGenerator()->GetCMakeInstance()->IssueMessage(
         cmake::LOG, std::string("Used sources for target ") + tgt->GetName() +
           ":\n" + usedSources,
-        (*it)->ge->GetBacktrace());
+        entry->ge->GetBacktrace());
     }
   }
   return contextDependent;
@@ -908,19 +892,15 @@ void cmGeneratorTarget::GetSourceFiles(std::vector<std::string>& files,
     // behavior of CMP0024 and CMP0026 only.
 
     cmStringRange sourceEntries = this->Target->GetSourceEntries();
-    for (cmStringRange::const_iterator i = sourceEntries.begin();
-         i != sourceEntries.end(); ++i) {
-      std::string const& entry = *i;
-
+    for (std::string const& entry : sourceEntries) {
       std::vector<std::string> items;
       cmSystemTools::ExpandListArgument(entry, items);
-      for (std::vector<std::string>::const_iterator li = items.begin();
-           li != items.end(); ++li) {
-        if (cmHasLiteralPrefix(*li, "$<TARGET_OBJECTS:") &&
-            (*li)[li->size() - 1] == '>') {
+      for (std::string const& item : items) {
+        if (cmHasLiteralPrefix(item, "$<TARGET_OBJECTS:") &&
+            item[item.size() - 1] == '>') {
           continue;
         }
-        files.push_back(*li);
+        files.push_back(item);
       }
     }
     return;
@@ -942,9 +922,9 @@ void cmGeneratorTarget::GetSourceFiles(std::vector<std::string>& files,
   }
 
   cmGeneratorExpressionDAGChecker dagChecker(this->GetName(), "SOURCES",
-                                             CM_NULLPTR, CM_NULLPTR);
+                                             nullptr, nullptr);
 
-  CM_UNORDERED_SET<std::string> uniqueSrcs;
+  std::unordered_set<std::string> uniqueSrcs;
   bool contextDependentDirectSources =
     processSources(this, this->SourceEntries, files, uniqueSrcs, &dagChecker,
                    config, debugSources);
@@ -981,9 +961,8 @@ void cmGeneratorTarget::GetSourceFiles(std::vector<cmSourceFile*>& files,
     std::vector<std::string> srcs;
     this->GetSourceFiles(srcs, config);
     std::set<cmSourceFile*> emitted;
-    for (std::vector<std::string>::const_iterator i = srcs.begin();
-         i != srcs.end(); ++i) {
-      cmSourceFile* sf = this->Makefile->GetOrCreateSource(*i);
+    for (std::string const& s : srcs) {
+      cmSourceFile* sf = this->Makefile->GetOrCreateSource(s);
       if (emitted.insert(sf).second) {
         files.push_back(sf);
       }
@@ -993,9 +972,8 @@ void cmGeneratorTarget::GetSourceFiles(std::vector<cmSourceFile*>& files,
 
   KindedSources const& kinded = this->GetKindedSources(config);
   files.reserve(kinded.Sources.size());
-  for (std::vector<SourceAndKind>::const_iterator si = kinded.Sources.begin();
-       si != kinded.Sources.end(); ++si) {
-    files.push_back(si->Source);
+  for (SourceAndKind const& si : kinded.Sources) {
+    files.push_back(si.Source);
   }
 }
 
@@ -1004,10 +982,9 @@ void cmGeneratorTarget::GetSourceFilesWithoutObjectLibraries(
 {
   KindedSources const& kinded = this->GetKindedSources(config);
   files.reserve(kinded.Sources.size());
-  for (std::vector<SourceAndKind>::const_iterator si = kinded.Sources.begin();
-       si != kinded.Sources.end(); ++si) {
-    if (si->Source->GetObjectLibrary().empty()) {
-      files.push_back(si->Source);
+  for (SourceAndKind const& si : kinded.Sources) {
+    if (si.Source->GetObjectLibrary().empty()) {
+      files.push_back(si.Source);
     }
   }
 }
@@ -1056,10 +1033,9 @@ void cmGeneratorTarget::ComputeKindedSources(KindedSources& files,
   std::vector<cmSourceFile*> badObjLib;
 
   std::set<cmSourceFile*> emitted;
-  for (std::vector<std::string>::const_iterator i = srcs.begin();
-       i != srcs.end(); ++i) {
+  for (std::string const& s : srcs) {
     // Create each source at most once.
-    cmSourceFile* sf = this->Makefile->GetOrCreateSource(*i);
+    cmSourceFile* sf = this->Makefile->GetOrCreateSource(s);
     if (!emitted.insert(sf).second) {
       continue;
     }
@@ -1132,9 +1108,8 @@ void cmGeneratorTarget::ComputeKindedSources(KindedSources& files,
   if (!badObjLib.empty()) {
     std::ostringstream e;
     e << "OBJECT library \"" << this->GetName() << "\" contains:\n";
-    for (std::vector<cmSourceFile*>::const_iterator i = badObjLib.begin();
-         i != badObjLib.end(); ++i) {
-      e << "  " << (*i)->GetLocation().GetName() << "\n";
+    for (cmSourceFile* i : badObjLib) {
+      e << "  " << i->GetLocation().GetName() << "\n";
     }
     e << "but may contain only sources that compile, header files, and "
          "other files that would not affect linking of a normal library.";
@@ -1161,18 +1136,16 @@ void cmGeneratorTarget::ComputeAllConfigSources() const
 
   for (size_t ci = 0; ci < configs.size(); ++ci) {
     KindedSources const& sources = this->GetKindedSources(configs[ci]);
-    for (std::vector<cmGeneratorTarget::SourceAndKind>::const_iterator si =
-           sources.Sources.begin();
-         si != sources.Sources.end(); ++si) {
+    for (SourceAndKind const& src : sources.Sources) {
       std::map<cmSourceFile const*, size_t>::iterator mi =
-        index.find(si->Source);
+        index.find(src.Source);
       if (mi == index.end()) {
         AllConfigSource acs;
-        acs.Source = si->Source;
-        acs.Kind = si->Kind;
+        acs.Source = src.Source;
+        acs.Kind = src.Kind;
         this->AllConfigSources.push_back(acs);
         std::map<cmSourceFile const*, size_t>::value_type entry(
-          si->Source, this->AllConfigSources.size() - 1);
+          src.Source, this->AllConfigSources.size() - 1);
         mi = index.insert(entry).first;
       }
       this->AllConfigSources[mi->second].Configs.push_back(ci);
@@ -1714,7 +1687,7 @@ const char* cmGeneratorTarget::GetExportMacro() const
     }
     return this->ExportMacro.c_str();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 class cmTargetCollectLinkLanguages
@@ -1722,7 +1695,7 @@ class cmTargetCollectLinkLanguages
 public:
   cmTargetCollectLinkLanguages(cmGeneratorTarget const* target,
                                const std::string& config,
-                               CM_UNORDERED_SET<std::string>& languages,
+                               std::unordered_set<std::string>& languages,
                                cmGeneratorTarget const* head)
     : Config(config)
     , Languages(languages)
@@ -1775,21 +1748,18 @@ public:
       return;
     }
 
-    for (std::vector<std::string>::const_iterator li =
-           iface->Languages.begin();
-         li != iface->Languages.end(); ++li) {
-      this->Languages.insert(*li);
+    for (std::string const& language : iface->Languages) {
+      this->Languages.insert(language);
     }
 
-    for (std::vector<cmLinkItem>::const_iterator li = iface->Libraries.begin();
-         li != iface->Libraries.end(); ++li) {
-      this->Visit(*li);
+    for (cmLinkItem const& lib : iface->Libraries) {
+      this->Visit(lib);
     }
   }
 
 private:
   std::string Config;
-  CM_UNORDERED_SET<std::string>& Languages;
+  std::unordered_set<std::string>& Languages;
   cmGeneratorTarget const* HeadTarget;
   const cmGeneratorTarget* Target;
   std::set<cmGeneratorTarget const*> Visited;
@@ -1844,9 +1814,8 @@ public:
       e << "Target " << this->Target->GetName()
         << " contains multiple languages with the highest linker preference"
         << " (" << this->Preference << "):\n";
-      for (std::set<std::string>::const_iterator li = this->Preferred.begin();
-           li != this->Preferred.end(); ++li) {
-        e << "  " << *li << "\n";
+      for (std::string const& li : this->Preferred) {
+        e << "  " << li << "\n";
       }
       e << "Set the LINKER_LANGUAGE property for this target.";
       cmake* cm = this->Target->GetLocalGenerator()->GetCMakeInstance();
@@ -1861,26 +1830,22 @@ void cmGeneratorTarget::ComputeLinkClosure(const std::string& config,
                                            LinkClosure& lc) const
 {
   // Get languages built in this target.
-  CM_UNORDERED_SET<std::string> languages;
+  std::unordered_set<std::string> languages;
   cmLinkImplementation const* impl = this->GetLinkImplementation(config);
   assert(impl);
-  for (std::vector<std::string>::const_iterator li = impl->Languages.begin();
-       li != impl->Languages.end(); ++li) {
-    languages.insert(*li);
+  for (std::string const& li : impl->Languages) {
+    languages.insert(li);
   }
 
   // Add interface languages from linked targets.
   cmTargetCollectLinkLanguages cll(this, config, languages, this);
-  for (std::vector<cmLinkImplItem>::const_iterator li =
-         impl->Libraries.begin();
-       li != impl->Libraries.end(); ++li) {
-    cll.Visit(*li);
+  for (cmLinkImplItem const& lib : impl->Libraries) {
+    cll.Visit(lib);
   }
 
   // Store the transitive closure of languages.
-  for (CM_UNORDERED_SET<std::string>::const_iterator li = languages.begin();
-       li != languages.end(); ++li) {
-    lc.Languages.push_back(*li);
+  for (std::string const& lang : languages) {
+    lc.Languages.push_back(lang);
   }
 
   // Choose the language whose linker should be used.
@@ -1893,18 +1858,16 @@ void cmGeneratorTarget::ComputeLinkClosure(const std::string& config,
     cmTargetSelectLinker tsl(this);
 
     // First select from the languages compiled directly in this target.
-    for (std::vector<std::string>::const_iterator li = impl->Languages.begin();
-         li != impl->Languages.end(); ++li) {
-      tsl.Consider(li->c_str());
+    for (std::string const& l : impl->Languages) {
+      tsl.Consider(l.c_str());
     }
 
     // Now consider languages that propagate from linked targets.
-    for (CM_UNORDERED_SET<std::string>::const_iterator sit = languages.begin();
-         sit != languages.end(); ++sit) {
+    for (std::string const& lang : languages) {
       std::string propagates =
-        "CMAKE_" + *sit + "_LINKER_PREFERENCE_PROPAGATES";
+        "CMAKE_" + lang + "_LINKER_PREFERENCE_PROPAGATES";
       if (this->Makefile->IsOn(propagates)) {
-        tsl.Consider(sit->c_str());
+        tsl.Consider(lang.c_str());
       }
     }
 
@@ -1973,7 +1936,7 @@ cmGeneratorTarget::CompileInfo const* cmGeneratorTarget::GetCompileInfo(
 {
   // There is no compile information for imported targets.
   if (this->IsImported()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   if (this->GetType() > cmStateEnums::OBJECT_LIBRARY) {
@@ -1982,7 +1945,7 @@ cmGeneratorTarget::CompileInfo const* cmGeneratorTarget::GetCompileInfo(
     msg += " which has type ";
     msg += cmState::GetTargetTypeName(this->GetType());
     this->LocalGenerator->IssueMessage(cmake::INTERNAL_ERROR, msg);
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Lookup/compute/cache the compile information for this configuration.
@@ -2008,7 +1971,7 @@ cmGeneratorTarget::GetModuleDefinitionInfo(std::string const& config) const
   if (this->GetType() != cmStateEnums::SHARED_LIBRARY &&
       this->GetType() != cmStateEnums::MODULE_LIBRARY &&
       !this->IsExecutableWithExports()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Lookup/compute/cache the compile information for this configuration.
@@ -2059,7 +2022,7 @@ void cmGeneratorTarget::GetAutoUicOptions(std::vector<std::string>& result,
   cmGeneratorExpression ge;
 
   cmGeneratorExpressionDAGChecker dagChecker(
-    this->GetName(), "AUTOUIC_OPTIONS", CM_NULLPTR, CM_NULLPTR);
+    this->GetName(), "AUTOUIC_OPTIONS", nullptr, nullptr);
   cmSystemTools::ExpandListArgument(
     ge.Parse(prop)->Evaluate(this->LocalGenerator, config, false, this,
                              &dagChecker),
@@ -2076,10 +2039,8 @@ void processILibs(const std::string& config,
     tgts.push_back(item.Target);
     if (cmLinkInterfaceLibraries const* iface =
           item.Target->GetLinkInterfaceLibraries(config, headTarget, true)) {
-      for (std::vector<cmLinkItem>::const_iterator it =
-             iface->Libraries.begin();
-           it != iface->Libraries.end(); ++it) {
-        processILibs(config, headTarget, *it, gg, tgts, emitted);
+      for (cmLinkItem const& lib : iface->Libraries) {
+        processILibs(config, headTarget, lib, gg, tgts, emitted);
       }
     }
   }
@@ -2097,10 +2058,8 @@ cmGeneratorTarget::GetLinkImplementationClosure(
     cmLinkImplementationLibraries const* impl =
       this->GetLinkImplementationLibraries(config);
 
-    for (std::vector<cmLinkImplItem>::const_iterator it =
-           impl->Libraries.begin();
-         it != impl->Libraries.end(); ++it) {
-      processILibs(config, this, *it,
+    for (cmLinkImplItem const& lib : impl->Libraries) {
+      processILibs(config, this, lib,
                    this->LocalGenerator->GetGlobalGenerator(), tgts, emitted);
     }
   }
@@ -2144,7 +2103,7 @@ cmTargetTraceDependencies::cmTargetTraceDependencies(cmGeneratorTarget* target)
   this->Makefile = target->Target->GetMakefile();
   this->LocalGenerator = target->GetLocalGenerator();
   this->GlobalGenerator = this->LocalGenerator->GetGlobalGenerator();
-  this->CurrentEntry = CM_NULLPTR;
+  this->CurrentEntry = nullptr;
 
   // Queue all the source files already specified for the target.
   if (target->GetType() != cmStateEnums::INTERFACE_LIBRARY) {
@@ -2154,13 +2113,10 @@ cmTargetTraceDependencies::cmTargetTraceDependencies(cmGeneratorTarget* target)
       configs.push_back("");
     }
     std::set<cmSourceFile*> emitted;
-    for (std::vector<std::string>::const_iterator ci = configs.begin();
-         ci != configs.end(); ++ci) {
+    for (std::string const& c : configs) {
       std::vector<cmSourceFile*> sources;
-      this->GeneratorTarget->GetSourceFiles(sources, *ci);
-      for (std::vector<cmSourceFile*>::const_iterator si = sources.begin();
-           si != sources.end(); ++si) {
-        cmSourceFile* sf = *si;
+      this->GeneratorTarget->GetSourceFiles(sources, c);
+      for (cmSourceFile* sf : sources) {
         const std::set<cmGeneratorTarget const*> tgts =
           this->GlobalGenerator->GetFilenameTargetDepends(sf);
         if (tgts.find(this->GeneratorTarget) != tgts.end()) {
@@ -2199,10 +2155,9 @@ void cmTargetTraceDependencies::Trace()
     if (const char* additionalDeps = sf->GetProperty("OBJECT_DEPENDS")) {
       std::vector<std::string> objDeps;
       cmSystemTools::ExpandListArgument(additionalDeps, objDeps);
-      for (std::vector<std::string>::iterator odi = objDeps.begin();
-           odi != objDeps.end(); ++odi) {
-        if (cmSystemTools::FileIsFullPath(*odi)) {
-          *odi = cmSystemTools::CollapseFullPath(*odi);
+      for (std::string& objDep : objDeps) {
+        if (cmSystemTools::FileIsFullPath(objDep)) {
+          objDep = cmSystemTools::CollapseFullPath(objDep);
         }
       }
       this->FollowNames(objDeps);
@@ -2219,7 +2174,7 @@ void cmTargetTraceDependencies::Trace()
       this->CheckCustomCommand(*cc);
     }
   }
-  this->CurrentEntry = CM_NULLPTR;
+  this->CurrentEntry = nullptr;
 
   this->GeneratorTarget->AddTracedSources(this->NewSources);
 }
@@ -2255,9 +2210,8 @@ void cmTargetTraceDependencies::FollowName(std::string const& name)
 void cmTargetTraceDependencies::FollowNames(
   std::vector<std::string> const& names)
 {
-  for (std::vector<std::string>::const_iterator i = names.begin();
-       i != names.end(); ++i) {
-    this->FollowName(*i);
+  for (std::string const& name : names) {
+    this->FollowName(name);
   }
 }
 
@@ -2317,9 +2271,8 @@ void cmTargetTraceDependencies::CheckCustomCommand(cmCustomCommand const& cc)
   // Add target-level dependencies referenced by generator expressions.
   std::set<cmGeneratorTarget*> targets;
 
-  for (cmCustomCommandLines::const_iterator cit = cc.GetCommandLines().begin();
-       cit != cc.GetCommandLines().end(); ++cit) {
-    std::string const& command = *cit->begin();
+  for (cmCustomCommandLine const& cCmdLine : cc.GetCommandLines()) {
+    std::string const& command = *cCmdLine.begin();
     // Check for a target with this name.
     if (cmGeneratorTarget* t =
           this->LocalGenerator->FindGeneratorTargetToUse(command)) {
@@ -2333,18 +2286,16 @@ void cmTargetTraceDependencies::CheckCustomCommand(cmCustomCommand const& cc)
     }
 
     // Check for target references in generator expressions.
-    for (cmCustomCommandLine::const_iterator cli = cit->begin();
-         cli != cit->end(); ++cli) {
-      const CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(*cli);
+    for (std::string const& cl : cCmdLine) {
+      const std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(cl);
       cge->Evaluate(this->GeneratorTarget->GetLocalGenerator(), "", true);
       std::set<cmGeneratorTarget*> geTargets = cge->GetTargets();
       targets.insert(geTargets.begin(), geTargets.end());
     }
   }
 
-  for (std::set<cmGeneratorTarget*>::iterator ti = targets.begin();
-       ti != targets.end(); ++ti) {
-    this->GeneratorTarget->Target->AddUtility((*ti)->GetName());
+  for (cmGeneratorTarget* target : targets) {
+    this->GeneratorTarget->Target->AddUtility(target->GetName());
   }
 
   // Queue the custom command dependencies.
@@ -2354,9 +2305,8 @@ void cmTargetTraceDependencies::CheckCustomCommand(cmCustomCommand const& cc)
   if (configs.empty()) {
     configs.push_back("");
   }
-  for (std::vector<std::string>::const_iterator ci = configs.begin();
-       ci != configs.end(); ++ci) {
-    this->FollowCommandDepends(cc, *ci, emitted);
+  for (std::string const& conf : configs) {
+    this->FollowCommandDepends(cc, conf, emitted);
   }
 }
 
@@ -2369,9 +2319,7 @@ void cmTargetTraceDependencies::FollowCommandDepends(
 
   const std::vector<std::string>& depends = ccg.GetDepends();
 
-  for (std::vector<std::string>::const_iterator di = depends.begin();
-       di != depends.end(); ++di) {
-    std::string const& dep = *di;
+  for (std::string const& dep : depends) {
     if (emitted.insert(dep).second) {
       if (!this->IsUtility(dep)) {
         // The dependency does not name a target and may be a file we
@@ -2385,9 +2333,8 @@ void cmTargetTraceDependencies::FollowCommandDepends(
 void cmTargetTraceDependencies::CheckCustomCommands(
   const std::vector<cmCustomCommand>& commands)
 {
-  for (std::vector<cmCustomCommand>::const_iterator cli = commands.begin();
-       cli != commands.end(); ++cli) {
-    this->CheckCustomCommand(*cli);
+  for (cmCustomCommand const& command : commands) {
+    this->CheckCustomCommand(command);
   }
 }
 
@@ -2418,7 +2365,7 @@ std::string cmGeneratorTarget::GetCompilePDBDirectory(
 void cmGeneratorTarget::GetAppleArchs(const std::string& config,
                                       std::vector<std::string>& archVec) const
 {
-  const char* archs = CM_NULLPTR;
+  const char* archs = nullptr;
   if (!config.empty()) {
     std::string defVarName = "OSX_ARCHITECTURES_";
     defVarName += cmSystemTools::UpperCase(config);
@@ -2471,28 +2418,24 @@ static void processIncludeDirectories(
   cmGeneratorTarget const* tgt,
   const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
   std::vector<std::string>& includes,
-  CM_UNORDERED_SET<std::string>& uniqueIncludes,
+  std::unordered_set<std::string>& uniqueIncludes,
   cmGeneratorExpressionDAGChecker* dagChecker, const std::string& config,
   bool debugIncludes, const std::string& language)
 {
-  for (std::vector<cmGeneratorTarget::TargetPropertyEntry *>::const_iterator
-         it = entries.begin(),
-         end = entries.end();
-       it != end; ++it) {
-    cmLinkImplItem const& item = (*it)->LinkImplItem;
+  for (cmGeneratorTarget::TargetPropertyEntry* entry : entries) {
+    cmLinkImplItem const& item = entry->LinkImplItem;
     std::string const& targetName = item;
     bool const fromImported = item.Target && item.Target->IsImported();
     bool const checkCMP0027 = item.FromGenex;
     std::vector<std::string> entryIncludes;
     cmSystemTools::ExpandListArgument(
-      (*it)->ge->Evaluate(tgt->GetLocalGenerator(), config, false, tgt,
+      entry->ge->Evaluate(tgt->GetLocalGenerator(), config, false, tgt,
                           dagChecker, language),
       entryIncludes);
 
     std::string usedIncludes;
-    for (std::vector<std::string>::iterator li = entryIncludes.begin();
-         li != entryIncludes.end(); ++li) {
-      if (fromImported && !cmSystemTools::FileExists(li->c_str())) {
+    for (std::string& entryInclude : entryIncludes) {
+      if (fromImported && !cmSystemTools::FileExists(entryInclude.c_str())) {
         std::ostringstream e;
         cmake::MessageType messageType = cmake::FATAL_ERROR;
         if (checkCMP0027) {
@@ -2511,7 +2454,7 @@ static void processIncludeDirectories(
         }
         /* clang-format off */
         e << "Imported target \"" << targetName << "\" includes "
-             "non-existent path\n  \"" << *li << "\"\nin its "
+             "non-existent path\n  \"" << entryInclude << "\"\nin its "
              "INTERFACE_INCLUDE_DIRECTORIES. Possible reasons include:\n"
              "* The path was deleted, renamed, or moved to another "
              "location.\n"
@@ -2524,7 +2467,7 @@ static void processIncludeDirectories(
         return;
       }
 
-      if (!cmSystemTools::FileIsFullPath(li->c_str())) {
+      if (!cmSystemTools::FileIsFullPath(entryInclude.c_str())) {
         std::ostringstream e;
         bool noMessage = false;
         cmake::MessageType messageType = cmake::FATAL_ERROR;
@@ -2532,7 +2475,7 @@ static void processIncludeDirectories(
           /* clang-format off */
           e << "Target \"" << targetName << "\" contains relative "
             "path in its INTERFACE_INCLUDE_DIRECTORIES:\n"
-            "  \"" << *li << "\"";
+            "  \"" << entryInclude << "\"";
           /* clang-format on */
         } else {
           switch (tgt->GetPolicyStatusCMP0021()) {
@@ -2550,7 +2493,7 @@ static void processIncludeDirectories(
           }
           e << "Found relative path while evaluating include directories of "
                "\""
-            << tgt->GetName() << "\":\n  \"" << *li << "\"\n";
+            << tgt->GetName() << "\":\n  \"" << entryInclude << "\"\n";
         }
         if (!noMessage) {
           tgt->GetLocalGenerator()->IssueMessage(messageType, e.str());
@@ -2560,10 +2503,10 @@ static void processIncludeDirectories(
         }
       }
 
-      if (!cmSystemTools::IsOff(li->c_str())) {
-        cmSystemTools::ConvertToUnixSlashes(*li);
+      if (!cmSystemTools::IsOff(entryInclude.c_str())) {
+        cmSystemTools::ConvertToUnixSlashes(entryInclude);
       }
-      std::string inc = *li;
+      std::string inc = entryInclude;
 
       if (uniqueIncludes.insert(inc).second) {
         includes.push_back(inc);
@@ -2576,7 +2519,7 @@ static void processIncludeDirectories(
       tgt->GetLocalGenerator()->GetCMakeInstance()->IssueMessage(
         cmake::LOG, std::string("Used includes for target ") + tgt->GetName() +
           ":\n" + usedIncludes,
-        (*it)->ge->GetBacktrace());
+        entry->ge->GetBacktrace());
     }
   }
 }
@@ -2585,10 +2528,10 @@ std::vector<std::string> cmGeneratorTarget::GetIncludeDirectories(
   const std::string& config, const std::string& lang) const
 {
   std::vector<std::string> includes;
-  CM_UNORDERED_SET<std::string> uniqueIncludes;
+  std::unordered_set<std::string> uniqueIncludes;
 
   cmGeneratorExpressionDAGChecker dagChecker(
-    this->GetName(), "INCLUDE_DIRECTORIES", CM_NULLPTR, CM_NULLPTR);
+    this->GetName(), "INCLUDE_DIRECTORIES", nullptr, nullptr);
 
   std::vector<std::string> debugProperties;
   const char* debugProp =
@@ -2617,10 +2560,8 @@ std::vector<std::string> cmGeneratorTarget::GetIncludeDirectories(
   if (this->Makefile->IsOn("APPLE")) {
     cmLinkImplementationLibraries const* impl =
       this->GetLinkImplementationLibraries(config);
-    for (std::vector<cmLinkImplItem>::const_iterator it =
-           impl->Libraries.begin();
-         it != impl->Libraries.end(); ++it) {
-      std::string libDir = cmSystemTools::CollapseFullPath(*it);
+    for (cmLinkImplItem const& lib : impl->Libraries) {
+      std::string libDir = cmSystemTools::CollapseFullPath(lib);
 
       static cmsys::RegularExpression frameworkCheck(
         "(.*\\.framework)(/Versions/[^/]+)?/[^/]+$");
@@ -2631,10 +2572,10 @@ std::vector<std::string> cmGeneratorTarget::GetIncludeDirectories(
       libDir = frameworkCheck.match(1);
 
       cmGeneratorExpression ge;
-      CM_AUTO_PTR<cmCompiledGeneratorExpression> cge =
+      std::unique_ptr<cmCompiledGeneratorExpression> cge =
         ge.Parse(libDir.c_str());
       linkInterfaceIncludeDirectoriesEntries.push_back(
-        new cmGeneratorTarget::TargetPropertyEntry(cge));
+        new cmGeneratorTarget::TargetPropertyEntry(std::move(cge)));
     }
   }
 
@@ -2651,24 +2592,18 @@ static void processCompileOptionsInternal(
   cmGeneratorTarget const* tgt,
   const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
   std::vector<std::string>& options,
-  CM_UNORDERED_SET<std::string>& uniqueOptions,
+  std::unordered_set<std::string>& uniqueOptions,
   cmGeneratorExpressionDAGChecker* dagChecker, const std::string& config,
   bool debugOptions, const char* logName, std::string const& language)
 {
-  for (std::vector<cmGeneratorTarget::TargetPropertyEntry *>::const_iterator
-         it = entries.begin(),
-         end = entries.end();
-       it != end; ++it) {
+  for (cmGeneratorTarget::TargetPropertyEntry* entry : entries) {
     std::vector<std::string> entryOptions;
     cmSystemTools::ExpandListArgument(
-      (*it)->ge->Evaluate(tgt->GetLocalGenerator(), config, false, tgt,
+      entry->ge->Evaluate(tgt->GetLocalGenerator(), config, false, tgt,
                           dagChecker, language),
       entryOptions);
     std::string usedOptions;
-    for (std::vector<std::string>::iterator li = entryOptions.begin();
-         li != entryOptions.end(); ++li) {
-      std::string const& opt = *li;
-
+    for (std::string const& opt : entryOptions) {
       if (uniqueOptions.insert(opt).second) {
         options.push_back(opt);
         if (debugOptions) {
@@ -2680,7 +2615,7 @@ static void processCompileOptionsInternal(
       tgt->GetLocalGenerator()->GetCMakeInstance()->IssueMessage(
         cmake::LOG, std::string("Used compile ") + logName +
           std::string(" for target ") + tgt->GetName() + ":\n" + usedOptions,
-        (*it)->ge->GetBacktrace());
+        entry->ge->GetBacktrace());
     }
   }
 }
@@ -2689,7 +2624,7 @@ static void processCompileOptions(
   cmGeneratorTarget const* tgt,
   const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
   std::vector<std::string>& options,
-  CM_UNORDERED_SET<std::string>& uniqueOptions,
+  std::unordered_set<std::string>& uniqueOptions,
   cmGeneratorExpressionDAGChecker* dagChecker, const std::string& config,
   bool debugOptions, std::string const& language)
 {
@@ -2702,10 +2637,10 @@ void cmGeneratorTarget::GetCompileOptions(std::vector<std::string>& result,
                                           const std::string& config,
                                           const std::string& language) const
 {
-  CM_UNORDERED_SET<std::string> uniqueOptions;
+  std::unordered_set<std::string> uniqueOptions;
 
   cmGeneratorExpressionDAGChecker dagChecker(
-    this->GetName(), "COMPILE_OPTIONS", CM_NULLPTR, CM_NULLPTR);
+    this->GetName(), "COMPILE_OPTIONS", nullptr, nullptr);
 
   std::vector<std::string> debugProperties;
   const char* debugProp =
@@ -2743,7 +2678,7 @@ static void processCompileFeatures(
   cmGeneratorTarget const* tgt,
   const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
   std::vector<std::string>& options,
-  CM_UNORDERED_SET<std::string>& uniqueOptions,
+  std::unordered_set<std::string>& uniqueOptions,
   cmGeneratorExpressionDAGChecker* dagChecker, const std::string& config,
   bool debugOptions)
 {
@@ -2755,10 +2690,10 @@ static void processCompileFeatures(
 void cmGeneratorTarget::GetCompileFeatures(std::vector<std::string>& result,
                                            const std::string& config) const
 {
-  CM_UNORDERED_SET<std::string> uniqueFeatures;
+  std::unordered_set<std::string> uniqueFeatures;
 
   cmGeneratorExpressionDAGChecker dagChecker(
-    this->GetName(), "COMPILE_FEATURES", CM_NULLPTR, CM_NULLPTR);
+    this->GetName(), "COMPILE_FEATURES", nullptr, nullptr);
 
   std::vector<std::string> debugProperties;
   const char* debugProp =
@@ -2793,7 +2728,7 @@ static void processCompileDefinitions(
   cmGeneratorTarget const* tgt,
   const std::vector<cmGeneratorTarget::TargetPropertyEntry*>& entries,
   std::vector<std::string>& options,
-  CM_UNORDERED_SET<std::string>& uniqueOptions,
+  std::unordered_set<std::string>& uniqueOptions,
   cmGeneratorExpressionDAGChecker* dagChecker, const std::string& config,
   bool debugOptions, std::string const& language)
 {
@@ -2806,10 +2741,10 @@ void cmGeneratorTarget::GetCompileDefinitions(
   std::vector<std::string>& list, const std::string& config,
   const std::string& language) const
 {
-  CM_UNORDERED_SET<std::string> uniqueOptions;
+  std::unordered_set<std::string> uniqueOptions;
 
   cmGeneratorExpressionDAGChecker dagChecker(
-    this->GetName(), "COMPILE_DEFINITIONS", CM_NULLPTR, CM_NULLPTR);
+    this->GetName(), "COMPILE_DEFINITIONS", nullptr, nullptr);
 
   std::vector<std::string> debugProperties;
   const char* debugProp =
@@ -2848,10 +2783,10 @@ void cmGeneratorTarget::GetCompileDefinitions(
         }
         case cmPolicies::OLD: {
           cmGeneratorExpression ge;
-          CM_AUTO_PTR<cmCompiledGeneratorExpression> cge =
+          std::unique_ptr<cmCompiledGeneratorExpression> cge =
             ge.Parse(configProp);
           linkInterfaceCompileDefinitionsEntries.push_back(
-            new cmGeneratorTarget::TargetPropertyEntry(cge));
+            new cmGeneratorTarget::TargetPropertyEntry(std::move(cge)));
         } break;
         case cmPolicies::NEW:
         case cmPolicies::REQUIRED_ALWAYS:
@@ -2933,9 +2868,8 @@ bool cmGeneratorTarget::ComputeCompileFeatures(std::string const& config) const
 {
   std::vector<std::string> features;
   this->GetCompileFeatures(features, config);
-  for (std::vector<std::string>::const_iterator it = features.begin();
-       it != features.end(); ++it) {
-    if (!this->Makefile->AddRequiredTargetFeature(this->Target, *it)) {
+  for (std::string const& f : features) {
+    if (!this->Makefile->AddRequiredTargetFeature(this->Target, f)) {
       return false;
     }
   }
@@ -3045,8 +2979,8 @@ void cmGeneratorTarget::GetLibraryNames(std::string& name, std::string& soName,
       this->IsFrameworkOnApple()) {
     // Versioning is supported only for shared libraries and modules,
     // and then only when the platform supports an soname flag.
-    version = CM_NULLPTR;
-    soversion = CM_NULLPTR;
+    version = nullptr;
+    soversion = nullptr;
   }
   if (version && !soversion) {
     // The soversion must be set if the library version is set.  Use
@@ -3091,7 +3025,7 @@ void cmGeneratorTarget::GetLibraryNames(std::string& name, std::string& soName,
     impName =
       this->GetFullNameInternal(config, cmStateEnums::ImportLibraryArtifact);
   } else {
-    impName = "";
+    impName.clear();
   }
 
   // The program database file name.
@@ -3122,7 +3056,7 @@ void cmGeneratorTarget::GetExecutableNames(std::string& name,
   const char* version = this->GetProperty("VERSION");
   if (this->GetType() != cmStateEnums::EXECUTABLE ||
       this->Makefile->IsOn("XCODE")) {
-    version = CM_NULLPTR;
+    version = nullptr;
   }
 #endif
 
@@ -3194,9 +3128,9 @@ void cmGeneratorTarget::GetFullNameInternal(
       this->GetType() != cmStateEnums::SHARED_LIBRARY &&
       this->GetType() != cmStateEnums::MODULE_LIBRARY &&
       this->GetType() != cmStateEnums::EXECUTABLE) {
-    outPrefix = "";
+    outPrefix.clear();
     outBase = this->GetName();
-    outSuffix = "";
+    outSuffix.clear();
     return;
   }
 
@@ -3207,9 +3141,9 @@ void cmGeneratorTarget::GetFullNameInternal(
   // does not support import libraries.
   if (isImportedLibraryArtifact &&
       !this->Makefile->GetDefinition("CMAKE_IMPORT_LIBRARY_SUFFIX")) {
-    outPrefix = "";
-    outBase = "";
-    outSuffix = "";
+    outPrefix.clear();
+    outBase.clear();
+    outSuffix.clear();
     return;
   }
 
@@ -3228,7 +3162,7 @@ void cmGeneratorTarget::GetFullNameInternal(
   const char* targetSuffix =
     (isImportedLibraryArtifact ? this->GetProperty("IMPORT_SUFFIX")
                                : this->GetProperty("SUFFIX"));
-  const char* configPostfix = CM_NULLPTR;
+  const char* configPostfix = nullptr;
   if (!config.empty()) {
     std::string configProp = cmSystemTools::UpperCase(config);
     configProp += "_POSTFIX";
@@ -3236,7 +3170,7 @@ void cmGeneratorTarget::GetFullNameInternal(
     // Mac application bundles and frameworks have no postfix.
     if (configPostfix &&
         (this->IsAppBundleOnApple() || this->IsFrameworkOnApple())) {
-      configPostfix = CM_NULLPTR;
+      configPostfix = nullptr;
     }
   }
   const char* prefixVar = this->Target->GetPrefixVariableInternal(artifact);
@@ -3270,14 +3204,14 @@ void cmGeneratorTarget::GetFullNameInternal(
     fw_prefix = this->GetFrameworkDirectory(config, ContentLevel);
     fw_prefix += "/";
     targetPrefix = fw_prefix.c_str();
-    targetSuffix = CM_NULLPTR;
+    targetSuffix = nullptr;
   }
 
   if (this->IsCFBundleOnApple()) {
     fw_prefix = this->GetCFBundleDirectory(config, FullLevel);
     fw_prefix += "/";
     targetPrefix = fw_prefix.c_str();
-    targetSuffix = CM_NULLPTR;
+    targetSuffix = nullptr;
   }
 
   // Begin the final name with the prefix.
@@ -3327,9 +3261,8 @@ std::string cmGeneratorTarget::GetPDBName(const std::string& config) const
   // PDB_NAME
   props.push_back("PDB_NAME");
 
-  for (std::vector<std::string>::const_iterator i = props.begin();
-       i != props.end(); ++i) {
-    if (const char* outName = this->GetProperty(*i)) {
+  for (std::string const& p : props) {
+    if (const char* outName = this->GetProperty(p)) {
       base = outName;
       break;
     }
@@ -3357,20 +3290,16 @@ void cmGeneratorTarget::GetTargetObjectNames(
   this->GetObjectSources(objectSources, config);
   std::map<cmSourceFile const*, std::string> mapping;
 
-  for (std::vector<cmSourceFile const*>::const_iterator it =
-         objectSources.begin();
-       it != objectSources.end(); ++it) {
-    mapping[*it];
+  for (cmSourceFile const* sf : objectSources) {
+    mapping[sf];
   }
 
   this->LocalGenerator->ComputeObjectFilenames(mapping, this);
 
-  for (std::vector<cmSourceFile const*>::const_iterator it =
-         objectSources.begin();
-       it != objectSources.end(); ++it) {
+  for (cmSourceFile const* src : objectSources) {
     // Find the object file name corresponding to this source file.
     std::map<cmSourceFile const*, std::string>::const_iterator map_it =
-      mapping.find(*it);
+      mapping.find(src);
     // It must exist because we populated the mapping just above.
     assert(!map_it->second.empty());
     objects.push_back(map_it->second);
@@ -3433,9 +3362,8 @@ void cmGeneratorTarget::ConstructSourceFileFlags() const
   if (const char* files = this->GetProperty("PUBLIC_HEADER")) {
     std::vector<std::string> relFiles;
     cmSystemTools::ExpandListArgument(files, relFiles);
-    for (std::vector<std::string>::iterator it = relFiles.begin();
-         it != relFiles.end(); ++it) {
-      if (cmSourceFile* sf = this->Makefile->GetSource(*it)) {
+    for (std::string const& relFile : relFiles) {
+      if (cmSourceFile* sf = this->Makefile->GetSource(relFile)) {
         SourceFileFlags& flags = this->SourceFlagsMap[sf];
         flags.MacFolder = "Headers";
         flags.Type = cmGeneratorTarget::SourceFileTypePublicHeader;
@@ -3448,9 +3376,8 @@ void cmGeneratorTarget::ConstructSourceFileFlags() const
   if (const char* files = this->GetProperty("PRIVATE_HEADER")) {
     std::vector<std::string> relFiles;
     cmSystemTools::ExpandListArgument(files, relFiles);
-    for (std::vector<std::string>::iterator it = relFiles.begin();
-         it != relFiles.end(); ++it) {
-      if (cmSourceFile* sf = this->Makefile->GetSource(*it)) {
+    for (std::string const& relFile : relFiles) {
+      if (cmSourceFile* sf = this->Makefile->GetSource(relFile)) {
         SourceFileFlags& flags = this->SourceFlagsMap[sf];
         flags.MacFolder = "PrivateHeaders";
         flags.Type = cmGeneratorTarget::SourceFileTypePrivateHeader;
@@ -3462,9 +3389,8 @@ void cmGeneratorTarget::ConstructSourceFileFlags() const
   if (const char* files = this->GetProperty("RESOURCE")) {
     std::vector<std::string> relFiles;
     cmSystemTools::ExpandListArgument(files, relFiles);
-    for (std::vector<std::string>::iterator it = relFiles.begin();
-         it != relFiles.end(); ++it) {
-      if (cmSourceFile* sf = this->Makefile->GetSource(*it)) {
+    for (std::string const& relFile : relFiles) {
+      if (cmSourceFile* sf = this->Makefile->GetSource(relFile)) {
         SourceFileFlags& flags = this->SourceFlagsMap[sf];
         flags.MacFolder = "";
         if (!this->GlobalGenerator->ShouldStripResourcePath(this->Makefile)) {
@@ -3487,11 +3413,9 @@ cmGeneratorTarget::GetCompatibleInterfaces(std::string const& config) const
     compat.PropsString.insert("AUTOUIC_OPTIONS");
     std::vector<cmGeneratorTarget const*> const& deps =
       this->GetLinkImplementationClosure(config);
-    for (std::vector<cmGeneratorTarget const*>::const_iterator li =
-           deps.begin();
-         li != deps.end(); ++li) {
+    for (cmGeneratorTarget const* li : deps) {
 #define CM_READ_COMPATIBLE_INTERFACE(X, x)                                    \
-  if (const char* prop = (*li)->GetProperty("COMPATIBLE_INTERFACE_" #X)) {    \
+  if (const char* prop = li->GetProperty("COMPATIBLE_INTERFACE_" #X)) {       \
     std::vector<std::string> props;                                           \
     cmSystemTools::ExpandListArgument(prop, props);                           \
     compat.Props##x.insert(props.begin(), props.end());                       \
@@ -3581,7 +3505,7 @@ const char* getLinkInterfaceDependentProperty(cmGeneratorTarget const* tgt,
     case BoolType:
       assert(false &&
              "String compatibility check function called for boolean");
-      return CM_NULLPTR;
+      return nullptr;
     case StringType:
       return tgt->GetLinkInterfaceDependentStringProperty(prop, config);
     case NumberMinType:
@@ -3590,7 +3514,7 @@ const char* getLinkInterfaceDependentProperty(cmGeneratorTarget const* tgt,
       return tgt->GetLinkInterfaceDependentNumberMaxProperty(prop, config);
   }
   assert(false && "Unreachable!");
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 template <typename PropertyType>
@@ -3611,13 +3535,12 @@ void checkPropertyConsistency(cmGeneratorTarget const* depender,
   std::string pdir = cmSystemTools::GetCMakeRoot();
   pdir += "/Help/prop_tgt/";
 
-  for (std::vector<std::string>::iterator pi = props.begin();
-       pi != props.end(); ++pi) {
-    std::string pname = cmSystemTools::HelpFileName(*pi);
+  for (std::string const& p : props) {
+    std::string pname = cmSystemTools::HelpFileName(p);
     std::string pfile = pdir + pname + ".rst";
     if (cmSystemTools::FileExists(pfile.c_str(), true)) {
       std::ostringstream e;
-      e << "Target \"" << dependee->GetName() << "\" has property \"" << *pi
+      e << "Target \"" << dependee->GetName() << "\" has property \"" << p
         << "\" listed in its " << propName
         << " property.  "
            "This is not allowed.  Only user-defined properties may appear "
@@ -3626,9 +3549,9 @@ void checkPropertyConsistency(cmGeneratorTarget const* depender,
       depender->GetLocalGenerator()->IssueMessage(cmake::FATAL_ERROR, e.str());
       return;
     }
-    if (emitted.insert(*pi).second) {
-      getLinkInterfaceDependentProperty<PropertyType>(depender, *pi, config, t,
-                                                      CM_NULLPTR);
+    if (emitted.insert(p).second) {
+      getLinkInterfaceDependentProperty<PropertyType>(depender, p, config, t,
+                                                      nullptr);
       if (cmSystemTools::GetErrorOccuredFlag()) {
         return;
       }
@@ -3699,32 +3622,31 @@ void cmGeneratorTarget::CheckPropertyCompatibility(
   std::set<std::string> emittedMaxNumbers;
   static std::string strNumMax = "COMPATIBLE_INTERFACE_NUMBER_MAX";
 
-  for (cmComputeLinkInformation::ItemVector::const_iterator li = deps.begin();
-       li != deps.end(); ++li) {
-    if (!li->Target) {
+  for (auto const& dep : deps) {
+    if (!dep.Target) {
       continue;
     }
 
-    checkPropertyConsistency<bool>(this, li->Target, strBool, emittedBools,
-                                   config, BoolType, CM_NULLPTR);
+    checkPropertyConsistency<bool>(this, dep.Target, strBool, emittedBools,
+                                   config, BoolType, nullptr);
     if (cmSystemTools::GetErrorOccuredFlag()) {
       return;
     }
-    checkPropertyConsistency<const char*>(this, li->Target, strString,
+    checkPropertyConsistency<const char*>(this, dep.Target, strString,
                                           emittedStrings, config, StringType,
-                                          CM_NULLPTR);
+                                          nullptr);
     if (cmSystemTools::GetErrorOccuredFlag()) {
       return;
     }
-    checkPropertyConsistency<const char*>(this, li->Target, strNumMin,
+    checkPropertyConsistency<const char*>(this, dep.Target, strNumMin,
                                           emittedMinNumbers, config,
-                                          NumberMinType, CM_NULLPTR);
+                                          NumberMinType, nullptr);
     if (cmSystemTools::GetErrorOccuredFlag()) {
       return;
     }
-    checkPropertyConsistency<const char*>(this, li->Target, strNumMax,
+    checkPropertyConsistency<const char*>(this, dep.Target, strNumMax,
                                           emittedMaxNumbers, config,
-                                          NumberMaxType, CM_NULLPTR);
+                                          NumberMaxType, nullptr);
     if (cmSystemTools::GetErrorOccuredFlag()) {
       return;
     }
@@ -3858,7 +3780,7 @@ std::pair<bool, const char*> consistentStringProperty(const char* lhs,
                                                       const char* rhs)
 {
   const bool b = strcmp(lhs, rhs) == 0;
-  return std::make_pair(b, b ? lhs : CM_NULLPTR);
+  return std::make_pair(b, b ? lhs : nullptr);
 }
 
 std::pair<bool, const char*> consistentNumberProperty(const char* lhs,
@@ -3867,7 +3789,7 @@ std::pair<bool, const char*> consistentNumberProperty(const char* lhs,
 {
   char* pEnd;
 
-  const char* const null_ptr = CM_NULLPTR;
+  const char* const null_ptr = nullptr;
 
   long lnum = strtol(lhs, &pEnd, 0);
   if (pEnd == lhs || *pEnd != '\0' || errno == ERANGE) {
@@ -3900,7 +3822,7 @@ std::pair<bool, const char*> consistentProperty(const char* lhs,
     return std::make_pair(true, lhs);
   }
 
-  const char* const null_ptr = CM_NULLPTR;
+  const char* const null_ptr = nullptr;
 
   switch (t) {
     case BoolType:
@@ -3954,16 +3876,13 @@ PropertyType checkInterfacePropertyCompatibility(cmGeneratorTarget const* tgt,
   }
 
   std::string interfaceProperty = "INTERFACE_" + p;
-  for (std::vector<cmGeneratorTarget const*>::const_iterator li = deps.begin();
-       li != deps.end(); ++li) {
+  for (cmGeneratorTarget const* theTarget : deps) {
     // An error should be reported if one dependency
     // has INTERFACE_POSITION_INDEPENDENT_CODE ON and the other
     // has INTERFACE_POSITION_INDEPENDENT_CODE OFF, or if the
     // target itself has a POSITION_INDEPENDENT_CODE which disagrees
     // with a dependency.
 
-    cmGeneratorTarget const* theTarget = *li;
-
     std::vector<std::string> propKeys = theTarget->GetPropertyKeys();
 
     const bool ifaceIsSet = std::find(propKeys.begin(), propKeys.end(),
@@ -4063,28 +3982,28 @@ bool cmGeneratorTarget::GetLinkInterfaceDependentBoolProperty(
   const std::string& p, const std::string& config) const
 {
   return checkInterfacePropertyCompatibility<bool>(this, p, config, "FALSE",
-                                                   BoolType, CM_NULLPTR);
+                                                   BoolType, nullptr);
 }
 
 const char* cmGeneratorTarget::GetLinkInterfaceDependentStringProperty(
   const std::string& p, const std::string& config) const
 {
   return checkInterfacePropertyCompatibility<const char*>(
-    this, p, config, "empty", StringType, CM_NULLPTR);
+    this, p, config, "empty", StringType, nullptr);
 }
 
 const char* cmGeneratorTarget::GetLinkInterfaceDependentNumberMinProperty(
   const std::string& p, const std::string& config) const
 {
   return checkInterfacePropertyCompatibility<const char*>(
-    this, p, config, "empty", NumberMinType, CM_NULLPTR);
+    this, p, config, "empty", NumberMinType, nullptr);
 }
 
 const char* cmGeneratorTarget::GetLinkInterfaceDependentNumberMaxProperty(
   const std::string& p, const std::string& config) const
 {
   return checkInterfacePropertyCompatibility<const char*>(
-    this, p, config, "empty", NumberMaxType, CM_NULLPTR);
+    this, p, config, "empty", NumberMaxType, nullptr);
 }
 
 cmComputeLinkInformation* cmGeneratorTarget::GetLinkInformation(
@@ -4099,7 +4018,7 @@ cmComputeLinkInformation* cmGeneratorTarget::GetLinkInformation(
       new cmComputeLinkInformation(this, config);
     if (!info || !info->Compute()) {
       delete info;
-      info = CM_NULLPTR;
+      info = nullptr;
     }
 
     // Store the information for this configuration.
@@ -4233,9 +4152,8 @@ std::vector<std::string> cmGeneratorTarget::GetPropertyKeys() const
   cmPropertyMap const& propsObject = this->Target->GetProperties();
   std::vector<std::string> props;
   props.reserve(propsObject.size());
-  for (cmPropertyMap::const_iterator it = propsObject.begin();
-       it != propsObject.end(); ++it) {
-    props.push_back(it->first);
+  for (auto const& it : propsObject) {
+    props.push_back(it.first);
   }
   return props;
 }
@@ -4275,9 +4193,8 @@ void cmGeneratorTarget::ReportPropertyOrigin(
 void cmGeneratorTarget::LookupLinkItems(std::vector<std::string> const& names,
                                         std::vector<cmLinkItem>& items) const
 {
-  for (std::vector<std::string>::const_iterator i = names.begin();
-       i != names.end(); ++i) {
-    std::string name = this->CheckCMP0004(*i);
+  for (std::string const& n : names) {
+    std::string name = this->CheckCMP0004(n);
     if (name == this->GetName() || name.empty()) {
       continue;
     }
@@ -4291,15 +4208,15 @@ void cmGeneratorTarget::ExpandLinkItems(
   std::vector<cmLinkItem>& items, bool& hadHeadSensitiveCondition) const
 {
   cmGeneratorExpression ge;
-  cmGeneratorExpressionDAGChecker dagChecker(this->GetName(), prop, CM_NULLPTR,
-                                             CM_NULLPTR);
+  cmGeneratorExpressionDAGChecker dagChecker(this->GetName(), prop, nullptr,
+                                             nullptr);
   // The $<LINK_ONLY> expression may be in a link interface to specify private
   // link dependencies that are otherwise excluded from usage requirements.
   if (usage_requirements_only) {
     dagChecker.SetTransitivePropertiesOnly();
   }
   std::vector<std::string> libs;
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(value);
+  std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(value);
   cmSystemTools::ExpandListArgument(cge->Evaluate(this->LocalGenerator, config,
                                                   false, headTarget, this,
                                                   &dagChecker),
@@ -4320,7 +4237,7 @@ cmLinkInterface const* cmGeneratorTarget::GetLinkInterface(
   // export symbols.
   if (this->GetType() == cmStateEnums::EXECUTABLE &&
       !this->IsExecutableWithExports()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Lookup any existing link interface for this configuration.
@@ -4344,7 +4261,7 @@ cmLinkInterface const* cmGeneratorTarget::GetLinkInterface(
     }
   }
 
-  return iface.Exists ? &iface : CM_NULLPTR;
+  return iface.Exists ? &iface : nullptr;
 }
 
 void cmGeneratorTarget::ComputeLinkInterface(
@@ -4357,22 +4274,18 @@ void cmGeneratorTarget::ComputeLinkInterface(
         this->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       // Shared libraries may have runtime implementation dependencies
       // on other shared libraries that are not in the interface.
-      CM_UNORDERED_SET<std::string> emitted;
-      for (std::vector<cmLinkItem>::const_iterator li =
-             iface.Libraries.begin();
-           li != iface.Libraries.end(); ++li) {
-        emitted.insert(*li);
+      std::unordered_set<std::string> emitted;
+      for (cmLinkItem const& lib : iface.Libraries) {
+        emitted.insert(lib);
       }
       if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY) {
         cmLinkImplementation const* impl = this->GetLinkImplementation(config);
-        for (std::vector<cmLinkImplItem>::const_iterator li =
-               impl->Libraries.begin();
-             li != impl->Libraries.end(); ++li) {
-          if (emitted.insert(*li).second) {
-            if (li->Target) {
+        for (cmLinkImplItem const& lib : impl->Libraries) {
+          if (emitted.insert(lib).second) {
+            if (lib.Target) {
               // This is a runtime dependency on another shared library.
-              if (li->Target->GetType() == cmStateEnums::SHARED_LIBRARY) {
-                iface.SharedDeps.push_back(*li);
+              if (lib.Target->GetType() == cmStateEnums::SHARED_LIBRARY) {
+                iface.SharedDeps.push_back(lib);
               }
             } else {
               // TODO: Recognize shared library file names.  Perhaps this
@@ -4436,7 +4349,7 @@ const cmLinkInterfaceLibraries* cmGeneratorTarget::GetLinkInterfaceLibraries(
   // export symbols.
   if (this->GetType() == cmStateEnums::EXECUTABLE &&
       !this->IsExecutableWithExports()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Lookup any existing link interface for this configuration.
@@ -4459,7 +4372,7 @@ const cmLinkInterfaceLibraries* cmGeneratorTarget::GetLinkInterfaceLibraries(
                                         usage_requirements_only);
   }
 
-  return iface.Exists ? &iface : CM_NULLPTR;
+  return iface.Exists ? &iface : nullptr;
 }
 
 std::string cmGeneratorTarget::GetDirectory(
@@ -4494,7 +4407,7 @@ cmGeneratorTarget::OutputInfo const* cmGeneratorTarget::GetOutputInfo(
 {
   // There is no output information for imported targets.
   if (this->IsImported()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Only libraries and executables have well-defined output files.
@@ -4504,7 +4417,7 @@ cmGeneratorTarget::OutputInfo const* cmGeneratorTarget::GetOutputInfo(
     msg += " which has type ";
     msg += cmState::GetTargetTypeName(this->GetType());
     this->LocalGenerator->IssueMessage(cmake::INTERNAL_ERROR, msg);
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Lookup/compute/cache the output information for this configuration.
@@ -4537,7 +4450,7 @@ cmGeneratorTarget::OutputInfo const* cmGeneratorTarget::GetOutputInfo(
       cmake::FATAL_ERROR,
       "Target '" + this->GetName() + "' OUTPUT_DIRECTORY depends on itself.",
       this->GetBacktrace());
-    return CM_NULLPTR;
+    return nullptr;
   }
   return &i->second;
 }
@@ -4552,7 +4465,7 @@ bool cmGeneratorTarget::ComputeOutputDir(const std::string& config,
   // Look for a target property defining the target output directory
   // based on the target type.
   std::string targetTypeName = this->GetOutputTargetType(artifact);
-  const char* propertyName = CM_NULLPTR;
+  const char* propertyName = nullptr;
   std::string propertyNameStr = targetTypeName;
   if (!propertyNameStr.empty()) {
     propertyNameStr += "_OUTPUT_DIRECTORY";
@@ -4561,7 +4474,7 @@ bool cmGeneratorTarget::ComputeOutputDir(const std::string& config,
 
   // Check for a per-configuration output directory target property.
   std::string configUpper = cmSystemTools::UpperCase(conf);
-  const char* configProp = CM_NULLPTR;
+  const char* configProp = nullptr;
   std::string configPropStr = targetTypeName;
   if (!configPropStr.empty()) {
     configPropStr += "_OUTPUT_DIRECTORY_";
@@ -4573,21 +4486,22 @@ bool cmGeneratorTarget::ComputeOutputDir(const std::string& config,
   if (const char* config_outdir = this->GetProperty(configProp)) {
     // Use the user-specified per-configuration output directory.
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(config_outdir);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge =
+      ge.Parse(config_outdir);
     out = cge->Evaluate(this->LocalGenerator, config);
 
     // Skip per-configuration subdirectory.
-    conf = "";
+    conf.clear();
   } else if (const char* outdir = this->GetProperty(propertyName)) {
     // Use the user-specified output directory.
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(outdir);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(outdir);
     out = cge->Evaluate(this->LocalGenerator, config);
 
     // Skip per-configuration subdirectory if the value contained a
     // generator expression.
     if (out != outdir) {
-      conf = "";
+      conf.clear();
     }
   } else if (this->GetType() == cmStateEnums::EXECUTABLE) {
     // Lookup the output path for executables.
@@ -4629,7 +4543,7 @@ bool cmGeneratorTarget::ComputePDBOutputDir(const std::string& kind,
 {
   // Look for a target property defining the target output directory
   // based on the target type.
-  const char* propertyName = CM_NULLPTR;
+  const char* propertyName = nullptr;
   std::string propertyNameStr = kind;
   if (!propertyNameStr.empty()) {
     propertyNameStr += "_OUTPUT_DIRECTORY";
@@ -4639,7 +4553,7 @@ bool cmGeneratorTarget::ComputePDBOutputDir(const std::string& kind,
 
   // Check for a per-configuration output directory target property.
   std::string configUpper = cmSystemTools::UpperCase(conf);
-  const char* configProp = CM_NULLPTR;
+  const char* configProp = nullptr;
   std::string configPropStr = kind;
   if (!configPropStr.empty()) {
     configPropStr += "_OUTPUT_DIRECTORY_";
@@ -4653,7 +4567,7 @@ bool cmGeneratorTarget::ComputePDBOutputDir(const std::string& kind,
     out = config_outdir;
 
     // Skip per-configuration subdirectory.
-    conf = "";
+    conf.clear();
   } else if (const char* outdir = this->GetProperty(propertyName)) {
     // Use the user-specified output directory.
     out = outdir;
@@ -4697,7 +4611,7 @@ void cmGeneratorTarget::ComputeLinkInterfaceLibraries(
 
   // An explicit list of interface libraries may be set for shared
   // libraries and executables that export symbols.
-  const char* explicitLibraries = CM_NULLPTR;
+  const char* explicitLibraries = nullptr;
   std::string linkIfaceProp;
   if (this->GetPolicyStatusCMP0022() != cmPolicies::OLD &&
       this->GetPolicyStatusCMP0022() != cmPolicies::WARN) {
@@ -4740,7 +4654,7 @@ void cmGeneratorTarget::ComputeLinkInterfaceLibraries(
         "INTERFACE_LINK_LIBRARIES:\n"
         "  " << newExplicitLibraries << "\n" <<
         linkIfaceProp << ":\n"
-        "  " << (explicitLibraries ? explicitLibraries : "(empty)") << "\n";
+        "  " << explicitLibraries << "\n";
       /* clang-format on */
       this->LocalGenerator->IssueMessage(cmake::AUTHOR_WARNING, w.str());
       this->PolicyWarnedCMP0022 = true;
@@ -4824,7 +4738,7 @@ const cmLinkInterface* cmGeneratorTarget::GetImportLinkInterface(
 {
   cmGeneratorTarget::ImportInfo const* info = this->GetImportInfo(config);
   if (!info) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   std::string CONFIG = cmSystemTools::UpperCase(config);
@@ -4860,7 +4774,7 @@ cmGeneratorTarget::ImportInfo const* cmGeneratorTarget::GetImportInfo(
 {
   // There is no imported information for non-imported targets.
   if (!this->IsImported()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Lookup/compute/cache the import information for this
@@ -4886,7 +4800,7 @@ cmGeneratorTarget::ImportInfo const* cmGeneratorTarget::GetImportInfo(
   // If the location is empty then the target is not available for
   // this configuration.
   if (i->second.Location.empty() && i->second.ImportLibrary.empty()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Return the import information.
@@ -4903,8 +4817,8 @@ void cmGeneratorTarget::ComputeImportInfo(std::string const& desired_config,
   // Initialize members.
   info.NoSOName = false;
 
-  const char* loc = CM_NULLPTR;
-  const char* imp = CM_NULLPTR;
+  const char* loc = nullptr;
+  const char* imp = nullptr;
   std::string suffix;
   if (!this->Target->GetMappedConfig(desired_config, &loc, &imp, suffix)) {
     return;
@@ -5049,7 +4963,7 @@ const cmLinkImplementation* cmGeneratorTarget::GetLinkImplementation(
 {
   // There is no link implementation for imported targets.
   if (this->IsImported()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   std::string CONFIG = cmSystemTools::UpperCase(config);
@@ -5084,19 +4998,17 @@ bool cmGeneratorTarget::GetConfigCommonSourceFiles(
     if (configFiles != files) {
       std::string firstConfigFiles;
       const char* sep = "";
-      for (std::vector<cmSourceFile*>::const_iterator fi = files.begin();
-           fi != files.end(); ++fi) {
+      for (cmSourceFile* f : files) {
         firstConfigFiles += sep;
-        firstConfigFiles += (*fi)->GetFullPath();
+        firstConfigFiles += f->GetFullPath();
         sep = "\n  ";
       }
 
       std::string thisConfigFiles;
       sep = "";
-      for (std::vector<cmSourceFile*>::const_iterator fi = configFiles.begin();
-           fi != configFiles.end(); ++fi) {
+      for (cmSourceFile* f : configFiles) {
         thisConfigFiles += sep;
-        thisConfigFiles += (*fi)->GetFullPath();
+        thisConfigFiles += f->GetFullPath();
         sep = "\n  ";
       }
       std::ostringstream e;
@@ -5127,17 +5039,13 @@ void cmGeneratorTarget::GetObjectLibrariesCMP0026(
   // for TARGET_OBJECTS instead for backwards compatibility with OLD
   // behavior of CMP0024 and CMP0026 only.
   cmStringRange rng = this->Target->GetSourceEntries();
-  for (std::vector<std::string>::const_iterator i = rng.begin();
-       i != rng.end(); ++i) {
-    std::string const& entry = *i;
-
+  for (std::string const& entry : rng) {
     std::vector<std::string> files;
     cmSystemTools::ExpandListArgument(entry, files);
-    for (std::vector<std::string>::const_iterator li = files.begin();
-         li != files.end(); ++li) {
-      if (cmHasLiteralPrefix(*li, "$<TARGET_OBJECTS:") &&
-          (*li)[li->size() - 1] == '>') {
-        std::string objLibName = li->substr(17, li->size() - 18);
+    for (std::string const& li : files) {
+      if (cmHasLiteralPrefix(li, "$<TARGET_OBJECTS:") &&
+          li[li.size() - 1] == '>') {
+        std::string objLibName = li.substr(17, li.size() - 18);
 
         if (cmGeneratorExpression::Find(objLibName) != std::string::npos) {
           continue;
@@ -5203,9 +5111,8 @@ void cmGeneratorTarget::GetLanguages(std::set<std::string>& languages,
 {
   std::vector<cmSourceFile*> sourceFiles;
   this->GetSourceFiles(sourceFiles, config);
-  for (std::vector<cmSourceFile*>::const_iterator i = sourceFiles.begin();
-       i != sourceFiles.end(); ++i) {
-    const std::string& lang = (*i)->GetLanguage();
+  for (cmSourceFile* src : sourceFiles) {
+    const std::string& lang = src->GetLanguage();
     if (!lang.empty()) {
       languages.insert(lang);
     }
@@ -5217,27 +5124,21 @@ void cmGeneratorTarget::GetLanguages(std::set<std::string>& languages,
     std::vector<cmGeneratorTarget*> objectTargets;
     this->GetObjectLibrariesCMP0026(objectTargets);
     objectLibraries.reserve(objectTargets.size());
-    for (std::vector<cmGeneratorTarget*>::const_iterator it =
-           objectTargets.begin();
-         it != objectTargets.end(); ++it) {
-      objectLibraries.push_back(*it);
+    for (cmGeneratorTarget* gt : objectTargets) {
+      objectLibraries.push_back(gt);
     }
   } else {
     this->GetExternalObjects(externalObjects, config);
-    for (std::vector<cmSourceFile const*>::const_iterator i =
-           externalObjects.begin();
-         i != externalObjects.end(); ++i) {
-      std::string objLib = (*i)->GetObjectLibrary();
+    for (cmSourceFile const* extObj : externalObjects) {
+      std::string objLib = extObj->GetObjectLibrary();
       if (cmGeneratorTarget* tgt =
             this->LocalGenerator->FindGeneratorTargetToUse(objLib)) {
         objectLibraries.push_back(tgt);
       }
     }
   }
-  for (std::vector<cmGeneratorTarget*>::const_iterator i =
-         objectLibraries.begin();
-       i != objectLibraries.end(); ++i) {
-    (*i)->GetLanguages(languages, config);
+  for (cmGeneratorTarget* objLib : objectLibraries) {
+    objLib->GetLanguages(languages, config);
   }
 }
 
@@ -5281,7 +5182,7 @@ cmGeneratorTarget::GetLinkImplementationLibrariesInternal(
 {
   // There is no link implementation for imported targets.
   if (this->IsImported()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Populate the link implementation libraries for this configuration.
@@ -5322,9 +5223,9 @@ void cmGeneratorTarget::ComputeLinkImplementationLibraries(
        le != end; ++le, ++btIt) {
     std::vector<std::string> llibs;
     cmGeneratorExpressionDAGChecker dagChecker(
-      this->GetName(), "LINK_LIBRARIES", CM_NULLPTR, CM_NULLPTR);
+      this->GetName(), "LINK_LIBRARIES", nullptr, nullptr);
     cmGeneratorExpression ge(*btIt);
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> const cge = ge.Parse(*le);
+    std::unique_ptr<cmCompiledGeneratorExpression> const cge = ge.Parse(*le);
     std::string const evaluated =
       cge->Evaluate(this->LocalGenerator, config, false, head, &dagChecker);
     cmSystemTools::ExpandListArgument(evaluated, llibs);
@@ -5332,10 +5233,9 @@ void cmGeneratorTarget::ComputeLinkImplementationLibraries(
       impl.HadHeadSensitiveCondition = true;
     }
 
-    for (std::vector<std::string>::const_iterator li = llibs.begin();
-         li != llibs.end(); ++li) {
+    for (std::string const& lib : llibs) {
       // Skip entries that resolve to the target itself or are empty.
-      std::string name = this->CheckCMP0004(*li);
+      std::string name = this->CheckCMP0004(lib);
       if (name == this->GetName() || name.empty()) {
         if (name == this->GetName()) {
           bool noMessage = false;
@@ -5373,10 +5273,9 @@ void cmGeneratorTarget::ComputeLinkImplementationLibraries(
     }
 
     std::set<std::string> const& seenProps = cge->GetSeenTargetProperties();
-    for (std::set<std::string>::const_iterator it = seenProps.begin();
-         it != seenProps.end(); ++it) {
-      if (!this->GetProperty(*it)) {
-        this->LinkImplicitNullProperties.insert(*it);
+    for (std::string const& sp : seenProps) {
+      if (!this->GetProperty(sp)) {
+        this->LinkImplicitNullProperties.insert(sp);
       }
     }
     cge->GetMaxLanguageStandard(this, this->MaxLanguageStandards);
@@ -5390,10 +5289,9 @@ void cmGeneratorTarget::ComputeLinkImplementationLibraries(
     CMP0003_ComputeLinkType(config, debugConfigs);
   cmTarget::LinkLibraryVectorType const& oldllibs =
     this->Target->GetOriginalLinkLibraries();
-  for (cmTarget::LinkLibraryVectorType::const_iterator li = oldllibs.begin();
-       li != oldllibs.end(); ++li) {
-    if (li->second != GENERAL_LibraryType && li->second != linkType) {
-      std::string name = this->CheckCMP0004(li->first);
+  for (cmTarget::LibraryID const& oldllib : oldllibs) {
+    if (oldllib.second != GENERAL_LibraryType && oldllib.second != linkType) {
+      std::string name = this->CheckCMP0004(oldllib.first);
       if (name == this->GetName() || name.empty()) {
         continue;
       }
@@ -5415,7 +5313,7 @@ cmGeneratorTarget* cmGeneratorTarget::FindTargetToLink(
   // within the project.
   if (tgt && tgt->GetType() == cmStateEnums::EXECUTABLE &&
       !tgt->IsExecutableWithExports()) {
-    tgt = CM_NULLPTR;
+    tgt = nullptr;
   }
 
   if (tgt && tgt->GetType() == cmStateEnums::OBJECT_LIBRARY) {
@@ -5429,7 +5327,7 @@ cmGeneratorTarget* cmGeneratorTarget::FindTargetToLink(
          "with the ENABLE_EXPORTS property set.";
     cmake* cm = this->LocalGenerator->GetCMakeInstance();
     cm->IssueMessage(cmake::FATAL_ERROR, e.str(), this->GetBacktrace());
-    tgt = CM_NULLPTR;
+    tgt = nullptr;
   }
 
   return tgt;
diff --git a/Source/cmGeneratorTarget.h b/Source/cmGeneratorTarget.h
index 52147e319..1ee8a16fb 100644
--- a/Source/cmGeneratorTarget.h
+++ b/Source/cmGeneratorTarget.h
@@ -3,7 +3,7 @@
 #ifndef cmGeneratorTarget_h
 #define cmGeneratorTarget_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmLinkItem.h"
 #include "cmListFileCache.h"
@@ -491,6 +491,11 @@ public:
   std::string GetOutputName(const std::string& config,
                             cmStateEnums::ArtifactType artifact) const;
 
+  /** Clears cached meta data for local and external source files.
+    * The meta data will be recomputed on demand.
+    */
+  void ClearSourcesCache();
+
   void AddSource(const std::string& src);
   void AddTracedSources(std::vector<std::string> const& srcs);
 
@@ -519,7 +524,7 @@ public:
   {
     SourceFileFlags()
       : Type(SourceFileTypeNormal)
-      , MacFolder(CM_NULLPTR)
+      , MacFolder(nullptr)
     {
     }
     SourceFileType Type;
@@ -565,7 +570,7 @@ public:
   /** Convert the given GNU import library name (.dll.a) to a name with a new
       extension (.lib or ${CMAKE_IMPORT_LIBRARY_SUFFIX}).  */
   bool GetImplibGNUtoMS(std::string const& gnuName, std::string& out,
-                        const char* newExt = CM_NULLPTR) const;
+                        const char* newExt = nullptr) const;
 
   bool IsExecutableWithExports() const;
 
@@ -656,7 +661,7 @@ private:
   SourceEntriesType SourceDepends;
   mutable std::map<cmSourceFile const*, std::string> Objects;
   std::set<cmSourceFile const*> ExplicitObjectName;
-  mutable std::map<std::string, std::vector<std::string> > SystemIncludesCache;
+  mutable std::map<std::string, std::vector<std::string>> SystemIncludesCache;
 
   mutable std::string ExportMacro;
 
diff --git a/Source/cmGetCMakePropertyCommand.cxx b/Source/cmGetCMakePropertyCommand.cxx
index 5ba3326cb..fc82feef5 100644
--- a/Source/cmGetCMakePropertyCommand.cxx
+++ b/Source/cmGetCMakePropertyCommand.cxx
@@ -37,7 +37,7 @@ bool cmGetCMakePropertyCommand::InitialPass(
       this->Makefile->GetGlobalGenerator()->GetInstallComponents();
     output = cmJoin(*components, ";");
   } else {
-    const char* prop = CM_NULLPTR;
+    const char* prop = nullptr;
     if (!args[1].empty()) {
       prop = this->Makefile->GetState()->GetGlobalProperty(args[1]);
     }
diff --git a/Source/cmGetCMakePropertyCommand.h b/Source/cmGetCMakePropertyCommand.h
index 9dfc40fda..1f29c78dc 100644
--- a/Source/cmGetCMakePropertyCommand.h
+++ b/Source/cmGetCMakePropertyCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmGetCMakePropertyCommand_h
 #define cmGetCMakePropertyCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -15,14 +15,14 @@ class cmExecutionStatus;
 class cmGetCMakePropertyCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmGetCMakePropertyCommand; }
+  cmCommand* Clone() override { return new cmGetCMakePropertyCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the input file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmGetDirectoryPropertyCommand.cxx b/Source/cmGetDirectoryPropertyCommand.cxx
index 1005b1543..a8cf6ab9c 100644
--- a/Source/cmGetDirectoryPropertyCommand.cxx
+++ b/Source/cmGetDirectoryPropertyCommand.cxx
@@ -70,7 +70,7 @@ bool cmGetDirectoryPropertyCommand::InitialPass(
     return true;
   }
 
-  const char* prop = CM_NULLPTR;
+  const char* prop = nullptr;
   if (!i->empty()) {
     if (*i == "DEFINITIONS") {
       switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0059)) {
diff --git a/Source/cmGetDirectoryPropertyCommand.h b/Source/cmGetDirectoryPropertyCommand.h
index 7d9795065..02ea0566f 100644
--- a/Source/cmGetDirectoryPropertyCommand.h
+++ b/Source/cmGetDirectoryPropertyCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmGetDirectoryPropertyCommand_h
 #define cmGetDirectoryPropertyCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -15,14 +15,14 @@ class cmExecutionStatus;
 class cmGetDirectoryPropertyCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmGetDirectoryPropertyCommand; }
+  cmCommand* Clone() override { return new cmGetDirectoryPropertyCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the input file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   void StoreResult(const std::string& variable, const char* prop);
diff --git a/Source/cmGetFilenameComponentCommand.cxx b/Source/cmGetFilenameComponentCommand.cxx
index c23684c22..1b358aba8 100644
--- a/Source/cmGetFilenameComponentCommand.cxx
+++ b/Source/cmGetFilenameComponentCommand.cxx
@@ -60,7 +60,30 @@ bool cmGetFilenameComponentCommand::InitialPass(
         }
       }
     }
-    cmSystemTools::SplitProgramFromArgs(filename, result, programArgs);
+
+    // First assume the path to the program was specified with no
+    // arguments and with no quoting or escaping for spaces.
+    // Only bother doing this if there is non-whitespace.
+    if (!cmSystemTools::TrimWhitespace(filename).empty()) {
+      result = cmSystemTools::FindProgram(filename);
+    }
+
+    // If that failed then assume a command-line string was given
+    // and split the program part from the rest of the arguments.
+    if (result.empty()) {
+      std::string program;
+      if (cmSystemTools::SplitProgramFromArgs(filename, program,
+                                              programArgs)) {
+        if (cmSystemTools::FileExists(program)) {
+          result = program;
+        } else {
+          result = cmSystemTools::FindProgram(program);
+        }
+      }
+      if (result.empty()) {
+        programArgs.clear();
+      }
+    }
   } else if (args[2] == "EXT") {
     result = cmSystemTools::GetFilenameExtension(filename);
   } else if (args[2] == "NAME_WE") {
diff --git a/Source/cmGetFilenameComponentCommand.h b/Source/cmGetFilenameComponentCommand.h
index c8a23c70e..8c266552c 100644
--- a/Source/cmGetFilenameComponentCommand.h
+++ b/Source/cmGetFilenameComponentCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmGetFilenameComponentCommand_h
 #define cmGetFilenameComponentCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmGetFilenameComponentCommand; }
+  cmCommand* Clone() override { return new cmGetFilenameComponentCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmGetPropertyCommand.cxx b/Source/cmGetPropertyCommand.cxx
index ddecdf621..4494c3e87 100644
--- a/Source/cmGetPropertyCommand.cxx
+++ b/Source/cmGetPropertyCommand.cxx
@@ -258,9 +258,9 @@ bool cmGetPropertyCommand::HandleTargetMode()
       if (this->Makefile->IsAlias(this->Name)) {
         return this->StoreResult(target->GetName().c_str());
       }
-      return this->StoreResult(CM_NULLPTR);
+      return this->StoreResult(nullptr);
     }
-    const char* prop_cstr = CM_NULLPTR;
+    const char* prop_cstr = nullptr;
     cmListFileBacktrace bt = this->Makefile->GetBacktrace();
     cmMessenger* messenger = this->Makefile->GetMessenger();
     if (cmTargetPropertyComputer::PassesWhitelist(
@@ -333,7 +333,7 @@ bool cmGetPropertyCommand::HandleCacheMode()
     return false;
   }
 
-  const char* value = CM_NULLPTR;
+  const char* value = nullptr;
   if (this->Makefile->GetState()->GetCacheEntryValue(this->Name)) {
     value = this->Makefile->GetState()->GetCacheEntryProperty(
       this->Name, this->PropertyName);
@@ -357,7 +357,7 @@ bool cmGetPropertyCommand::HandleInstallMode()
     std::string value;
     bool isSet = file->GetProperty(this->PropertyName, value);
 
-    return this->StoreResult(isSet ? value.c_str() : CM_NULLPTR);
+    return this->StoreResult(isSet ? value.c_str() : nullptr);
   }
   std::ostringstream e;
   e << "given INSTALL name that could not be found or created: " << this->Name;
diff --git a/Source/cmGetPropertyCommand.h b/Source/cmGetPropertyCommand.h
index 649780168..c3f653e2e 100644
--- a/Source/cmGetPropertyCommand.h
+++ b/Source/cmGetPropertyCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmGetPropertyCommand_h
 #define cmGetPropertyCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -17,14 +17,14 @@ class cmGetPropertyCommand : public cmCommand
 public:
   cmGetPropertyCommand();
 
-  cmCommand* Clone() CM_OVERRIDE { return new cmGetPropertyCommand; }
+  cmCommand* Clone() override { return new cmGetPropertyCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the input file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   enum OutType
diff --git a/Source/cmGetSourceFilePropertyCommand.cxx b/Source/cmGetSourceFilePropertyCommand.cxx
index 1a5f08ef8..75879a553 100644
--- a/Source/cmGetSourceFilePropertyCommand.cxx
+++ b/Source/cmGetSourceFilePropertyCommand.cxx
@@ -28,7 +28,7 @@ bool cmGetSourceFilePropertyCommand::InitialPass(
       this->Makefile->AddDefinition(var, sf->GetLanguage().c_str());
       return true;
     }
-    const char* prop = CM_NULLPTR;
+    const char* prop = nullptr;
     if (!args[2].empty()) {
       prop = sf->GetPropertyForUser(args[2]);
     }
diff --git a/Source/cmGetSourceFilePropertyCommand.h b/Source/cmGetSourceFilePropertyCommand.h
index e96bb29ed..43bc330a8 100644
--- a/Source/cmGetSourceFilePropertyCommand.h
+++ b/Source/cmGetSourceFilePropertyCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmGetSourceFilePropertyCommand_h
 #define cmGetSourceFilePropertyCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -15,14 +15,14 @@ class cmExecutionStatus;
 class cmGetSourceFilePropertyCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmGetSourceFilePropertyCommand; }
+  cmCommand* Clone() override { return new cmGetSourceFilePropertyCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the input file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmGetTargetPropertyCommand.cxx b/Source/cmGetTargetPropertyCommand.cxx
index 0910a5324..ec485aa3e 100644
--- a/Source/cmGetTargetPropertyCommand.cxx
+++ b/Source/cmGetTargetPropertyCommand.cxx
@@ -34,7 +34,7 @@ bool cmGetTargetPropertyCommand::InitialPass(
         prop_exists = true;
       }
     } else if (!args[2].empty()) {
-      const char* prop_cstr = CM_NULLPTR;
+      const char* prop_cstr = nullptr;
       cmListFileBacktrace bt = this->Makefile->GetBacktrace();
       cmMessenger* messenger = this->Makefile->GetMessenger();
       if (cmTargetPropertyComputer::PassesWhitelist(tgt->GetType(), args[2],
diff --git a/Source/cmGetTargetPropertyCommand.h b/Source/cmGetTargetPropertyCommand.h
index 5de322563..63ee5fd9b 100644
--- a/Source/cmGetTargetPropertyCommand.h
+++ b/Source/cmGetTargetPropertyCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmGetTargetPropertyCommand_h
 #define cmGetTargetPropertyCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -15,14 +15,14 @@ class cmExecutionStatus;
 class cmGetTargetPropertyCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmGetTargetPropertyCommand; }
+  cmCommand* Clone() override { return new cmGetTargetPropertyCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the input file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmGetTestPropertyCommand.cxx b/Source/cmGetTestPropertyCommand.cxx
index 6424515ec..0b0d6eb3d 100644
--- a/Source/cmGetTestPropertyCommand.cxx
+++ b/Source/cmGetTestPropertyCommand.cxx
@@ -20,7 +20,7 @@ bool cmGetTestPropertyCommand::InitialPass(
   std::string const& var = args[2];
   cmTest* test = this->Makefile->GetTest(testName);
   if (test) {
-    const char* prop = CM_NULLPTR;
+    const char* prop = nullptr;
     if (!args[1].empty()) {
       prop = test->GetProperty(args[1]);
     }
diff --git a/Source/cmGetTestPropertyCommand.h b/Source/cmGetTestPropertyCommand.h
index b17e7a1cc..4a74f593f 100644
--- a/Source/cmGetTestPropertyCommand.h
+++ b/Source/cmGetTestPropertyCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmGetTestPropertyCommand_h
 #define cmGetTestPropertyCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -15,14 +15,14 @@ class cmExecutionStatus;
 class cmGetTestPropertyCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmGetTestPropertyCommand; }
+  cmCommand* Clone() override { return new cmGetTestPropertyCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the input file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmGhsMultiGpj.h b/Source/cmGhsMultiGpj.h
index 7bc7bfc46..b1eead101 100644
--- a/Source/cmGhsMultiGpj.h
+++ b/Source/cmGhsMultiGpj.h
@@ -3,7 +3,7 @@
 #ifndef cmGhsMultiGpj_h
 #define cmGhsMultiGpj_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 class cmGeneratedFileStream;
 
diff --git a/Source/cmGhsMultiTargetGenerator.cxx b/Source/cmGhsMultiTargetGenerator.cxx
index 7032cd582..a31e415b8 100644
--- a/Source/cmGhsMultiTargetGenerator.cxx
+++ b/Source/cmGhsMultiTargetGenerator.cxx
@@ -363,7 +363,7 @@ void cmGhsMultiTargetGenerator::WriteTargetLinkLibraries(
       this->GeneratorTarget->GetCreateRuleVariable(language, config);
     bool useWatcomQuote =
       this->Makefile->IsOn(createRule + "_USE_WATCOM_QUOTE");
-    CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+    std::unique_ptr<cmLinkLineComputer> linkLineComputer(
       this->GetGlobalGenerator()->CreateLinkLineComputer(
         this->LocalGenerator,
         this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -439,7 +439,7 @@ cmGhsMultiTargetGenerator::GetObjectNames(
   cmLocalGhsMultiGenerator* const localGhsMultiGenerator,
   cmGeneratorTarget* const generatorTarget)
 {
-  std::map<std::string, std::vector<cmSourceFile*> > filenameToSource;
+  std::map<std::string, std::vector<cmSourceFile*>> filenameToSource;
   std::map<cmSourceFile*, std::string> sourceToFilename;
   for (std::vector<cmSourceFile*>::const_iterator sf = objectSources->begin();
        sf != objectSources->end(); ++sf) {
@@ -451,7 +451,7 @@ cmGhsMultiTargetGenerator::GetObjectNames(
   }
 
   std::vector<cmSourceFile*> duplicateSources;
-  for (std::map<std::string, std::vector<cmSourceFile*> >::const_iterator
+  for (std::map<std::string, std::vector<cmSourceFile*>>::const_iterator
          msvSourceI = filenameToSource.begin();
        msvSourceI != filenameToSource.end(); ++msvSourceI) {
     if (msvSourceI->second.size() > 1) {
diff --git a/Source/cmGlobalCommonGenerator.h b/Source/cmGlobalCommonGenerator.h
index f2ad059de..e19118b50 100644
--- a/Source/cmGlobalCommonGenerator.h
+++ b/Source/cmGlobalCommonGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmGlobalCommonGenerator_h
 #define cmGlobalCommonGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmGlobalGenerator.h"
 
@@ -16,7 +16,7 @@ class cmGlobalCommonGenerator : public cmGlobalGenerator
 {
 public:
   cmGlobalCommonGenerator(cmake* cm);
-  ~cmGlobalCommonGenerator() CM_OVERRIDE;
+  ~cmGlobalCommonGenerator() override;
 };
 
 #endif
diff --git a/Source/cmGlobalGenerator.cxx b/Source/cmGlobalGenerator.cxx
index 099f705f4..05efff317 100644
--- a/Source/cmGlobalGenerator.cxx
+++ b/Source/cmGlobalGenerator.cxx
@@ -89,9 +89,9 @@ cmGlobalGenerator::cmGlobalGenerator(cmake* cm)
   // how long to let try compiles run
   this->TryCompileTimeout = 0;
 
-  this->ExtraGenerator = CM_NULLPTR;
-  this->CurrentMakefile = CM_NULLPTR;
-  this->TryCompileOuterMakefile = CM_NULLPTR;
+  this->ExtraGenerator = nullptr;
+  this->CurrentConfigureMakefile = nullptr;
+  this->TryCompileOuterMakefile = nullptr;
 
   this->ConfigureDoneCMP0026AndCMP0024 = false;
   this->FirstTimeProgress = 0.0f;
@@ -244,15 +244,13 @@ bool cmGlobalGenerator::GenerateImportFile(const std::string& file)
     bool result = it->second->GenerateImportFile();
 
     if (!this->ConfigureDoneCMP0026AndCMP0024) {
-      for (std::vector<cmMakefile*>::const_iterator mit =
-             this->Makefiles.begin();
-           mit != this->Makefiles.end(); ++mit) {
-        (*mit)->RemoveExportBuildFileGeneratorCMP0024(it->second);
+      for (cmMakefile* m : this->Makefiles) {
+        m->RemoveExportBuildFileGeneratorCMP0024(it->second);
       }
     }
 
     delete it->second;
-    it->second = CM_NULLPTR;
+    it->second = nullptr;
     this->BuildExportSets.erase(it);
     return result;
   }
@@ -383,12 +381,11 @@ void cmGlobalGenerator::EnableLanguage(
   }
 
   std::set<std::string> cur_languages(languages.begin(), languages.end());
-  for (std::set<std::string>::iterator li = cur_languages.begin();
-       li != cur_languages.end(); ++li) {
-    if (!this->LanguagesInProgress.insert(*li).second) {
+  for (std::string const& li : cur_languages) {
+    if (!this->LanguagesInProgress.insert(li).second) {
       std::ostringstream e;
-      e << "Language '" << *li << "' is currently being enabled.  "
-                                  "Recursive call not allowed.";
+      e << "Language '" << li << "' is currently being enabled.  "
+                                 "Recursive call not allowed.";
       mf->IssueMessage(cmake::FATAL_ERROR, e.str());
       cmSystemTools::SetFatalErrorOccured();
       return;
@@ -397,12 +394,11 @@ void cmGlobalGenerator::EnableLanguage(
 
   if (this->TryCompileOuterMakefile) {
     // In a try-compile we can only enable languages provided by caller.
-    for (std::vector<std::string>::const_iterator li = languages.begin();
-         li != languages.end(); ++li) {
-      if (*li == "NONE") {
+    for (std::string const& li : languages) {
+      if (li == "NONE") {
         this->SetLanguageEnabled("NONE", mf);
       } else {
-        const char* lang = li->c_str();
+        const char* lang = li.c_str();
         if (this->LanguagesReady.find(lang) == this->LanguagesReady.end()) {
           std::ostringstream e;
           e << "The test project needs language " << lang
@@ -451,15 +447,6 @@ void cmGlobalGenerator::EnableLanguage(
       "Platform information initialized", cmStateEnums::INTERNAL);
   }
 
-  // find and make sure CMAKE_MAKE_PROGRAM is defined
-  if (!this->FindMakeProgram(mf)) {
-    return;
-  }
-
-  if (!this->CheckLanguages(languages, mf)) {
-    return;
-  }
-
   // try and load the CMakeSystem.cmake if it is there
   std::string fpath = rootBin;
   bool const readCMakeSystem = !mf->GetDefinition("CMAKE_SYSTEM_LOADED");
@@ -490,7 +477,6 @@ void cmGlobalGenerator::EnableLanguage(
     windowsVersionString << osviex.dwMajorVersion << "."
                          << osviex.dwMinorVersion << "."
                          << osviex.dwBuildNumber;
-    windowsVersionString.str();
     mf->AddDefinition("CMAKE_HOST_SYSTEM_VERSION",
                       windowsVersionString.str().c_str());
 #endif
@@ -505,6 +491,11 @@ void cmGlobalGenerator::EnableLanguage(
   }
 
   if (readCMakeSystem) {
+    // Find the native build tool for this generator.
+    if (!this->FindMakeProgram(mf)) {
+      return;
+    }
+
     // Tell the generator about the target system.
     std::string system = mf->GetSafeDefinition("CMAKE_SYSTEM_NAME");
     if (!this->SetSystemName(system, mf)) {
@@ -527,6 +518,12 @@ void cmGlobalGenerator::EnableLanguage(
     }
   }
 
+  // Check that the languages are supported by the generator and its
+  // native build tool found above.
+  if (!this->CheckLanguages(languages, mf)) {
+    return;
+  }
+
   // **** Load the system specific initialization if not yet loaded
   if (!mf->GetDefinition("CMAKE_SYSTEM_SPECIFIC_INITIALIZE_LOADED")) {
     fpath = mf->GetModulesFile("CMakeSystemSpecificInitialize.cmake");
@@ -542,11 +539,10 @@ void cmGlobalGenerator::EnableLanguage(
   // load the CMakeDetermine(LANG)Compiler.cmake file to find
   // the compiler
 
-  for (std::vector<std::string>::const_iterator l = languages.begin();
-       l != languages.end(); ++l) {
-    const char* lang = l->c_str();
+  for (std::string const& l : languages) {
+    const char* lang = l.c_str();
     needSetLanguageEnabledMaps[lang] = false;
-    if (*l == "NONE") {
+    if (l == "NONE") {
       this->SetLanguageEnabled("NONE", mf);
       continue;
     }
@@ -648,10 +644,9 @@ void cmGlobalGenerator::EnableLanguage(
   }
   // loop over languages again loading CMake(LANG)Information.cmake
   //
-  for (std::vector<std::string>::const_iterator l = languages.begin();
-       l != languages.end(); ++l) {
-    const char* lang = l->c_str();
-    if (*l == "NONE") {
+  for (std::string const& l : languages) {
+    const char* lang = l.c_str();
+    if (l == "NONE") {
       this->SetLanguageEnabled("NONE", mf);
       continue;
     }
@@ -794,9 +789,8 @@ void cmGlobalGenerator::EnableLanguage(
     cmSystemTools::SetFatalErrorOccured();
   }
 
-  for (std::set<std::string>::iterator li = cur_languages.begin();
-       li != cur_languages.end(); ++li) {
-    this->LanguagesInProgress.erase(*li);
+  for (std::string const& lang : cur_languages) {
+    this->LanguagesInProgress.erase(lang);
   }
 }
 
@@ -1021,9 +1015,8 @@ void cmGlobalGenerator::SetLanguageEnabledMaps(const std::string& l,
   std::string ignoreExts = mf->GetSafeDefinition(ignoreExtensionsVar);
   std::vector<std::string> extensionList;
   cmSystemTools::ExpandListArgument(ignoreExts, extensionList);
-  for (std::vector<std::string>::iterator i = extensionList.begin();
-       i != extensionList.end(); ++i) {
-    this->IgnoreExtensions[*i] = true;
+  for (std::string const& i : extensionList) {
+    this->IgnoreExtensions[i] = true;
   }
 }
 
@@ -1035,9 +1028,8 @@ void cmGlobalGenerator::FillExtensionToLanguageMap(const std::string& l,
   std::string exts = mf->GetSafeDefinition(extensionsVar);
   std::vector<std::string> extensionList;
   cmSystemTools::ExpandListArgument(exts, extensionList);
-  for (std::vector<std::string>::iterator i = extensionList.begin();
-       i != extensionList.end(); ++i) {
-    this->ExtensionToLanguage[*i] = l;
+  for (std::string const& i : extensionList) {
+    this->ExtensionToLanguage[i] = l;
   }
 }
 
@@ -1075,7 +1067,7 @@ bool cmGlobalGenerator::GetLanguageEnabled(const std::string& l) const
 
 void cmGlobalGenerator::ClearEnabledLanguages()
 {
-  return this->CMakeInstance->GetState()->ClearEnabledLanguages();
+  this->CMakeInstance->GetState()->ClearEnabledLanguages();
 }
 
 void cmGlobalGenerator::CreateLocalGenerators()
@@ -1083,9 +1075,8 @@ void cmGlobalGenerator::CreateLocalGenerators()
   cmDeleteAll(this->LocalGenerators);
   this->LocalGenerators.clear();
   this->LocalGenerators.reserve(this->Makefiles.size());
-  for (std::vector<cmMakefile*>::const_iterator it = this->Makefiles.begin();
-       it != this->Makefiles.end(); ++it) {
-    this->LocalGenerators.push_back(this->CreateLocalGenerator(*it));
+  for (cmMakefile* m : this->Makefiles) {
+    this->LocalGenerators.push_back(this->CreateLocalGenerator(m));
   }
 }
 
@@ -1119,13 +1110,11 @@ void cmGlobalGenerator::Configure()
   std::vector<GlobalTargetInfo> globalTargets;
   this->CreateDefaultGlobalTargets(globalTargets);
 
-  for (unsigned int i = 0; i < this->Makefiles.size(); ++i) {
-    cmMakefile* mf = this->Makefiles[i];
+  for (cmMakefile* mf : this->Makefiles) {
     cmTargets* targets = &(mf->GetTargets());
-    for (std::vector<GlobalTargetInfo>::iterator gti = globalTargets.begin();
-         gti != globalTargets.end(); ++gti) {
-      targets->insert(
-        cmTargets::value_type(gti->Name, this->CreateGlobalTarget(*gti, mf)));
+    for (GlobalTargetInfo const& globalTarget : globalTargets) {
+      targets->insert(cmTargets::value_type(
+        globalTarget.Name, this->CreateGlobalTarget(globalTarget, mf)));
     }
   }
 
@@ -1145,7 +1134,7 @@ void cmGlobalGenerator::Configure()
     std::ostringstream msg;
     if (cmSystemTools::GetErrorOccuredFlag()) {
       msg << "Configuring incomplete, errors occurred!";
-      const char* logs[] = { "CMakeOutput.log", "CMakeError.log", CM_NULLPTR };
+      const char* logs[] = { "CMakeOutput.log", "CMakeError.log", nullptr };
       for (const char** log = logs; *log; ++log) {
         std::string f = this->CMakeInstance->GetHomeOutputDirectory();
         f += this->CMakeInstance->GetCMakeFilesDirectory();
@@ -1178,9 +1167,8 @@ void cmGlobalGenerator::CreateImportedGenerationObjects(
     std::find(this->Makefiles.begin(), this->Makefiles.end(), mf);
   cmLocalGenerator* lg =
     this->LocalGenerators[std::distance(this->Makefiles.begin(), mfit)];
-  for (std::vector<std::string>::const_iterator it = targets.begin();
-       it != targets.end(); ++it) {
-    cmGeneratorTarget* gt = lg->FindGeneratorTargetToUse(*it);
+  for (std::string const& t : targets) {
+    cmGeneratorTarget* gt = lg->FindGeneratorTargetToUse(t);
     if (gt) {
       exports.push_back(gt);
     }
@@ -1192,7 +1180,7 @@ cmExportBuildFileGenerator* cmGlobalGenerator::GetExportedTargetsFile(
 {
   std::map<std::string, cmExportBuildFileGenerator*>::const_iterator it =
     this->BuildExportSets.find(filename);
-  return it == this->BuildExportSets.end() ? CM_NULLPTR : it->second;
+  return it == this->BuildExportSets.end() ? nullptr : it->second;
 }
 
 void cmGlobalGenerator::AddCMP0042WarnTarget(const std::string& target)
@@ -1230,10 +1218,8 @@ void cmGlobalGenerator::ComputeBuildFileGenerators()
   for (unsigned int i = 0; i < this->LocalGenerators.size(); ++i) {
     std::vector<cmExportBuildFileGenerator*> gens =
       this->Makefiles[i]->GetExportBuildFileGenerators();
-    for (std::vector<cmExportBuildFileGenerator*>::const_iterator it =
-           gens.begin();
-         it != gens.end(); ++it) {
-      (*it)->Compute(this->LocalGenerators[i]);
+    for (cmExportBuildFileGenerator* g : gens) {
+      g->Compute(this->LocalGenerators[i]);
     }
   }
 }
@@ -1264,15 +1250,12 @@ bool cmGlobalGenerator::Compute()
 #ifdef CMAKE_BUILD_WITH_CMAKE
   // Iterate through all targets and set up automoc for those which have
   // the AUTOMOC, AUTOUIC or AUTORCC property set
-  std::vector<cmGeneratorTarget const*> autogenTargets =
-    this->CreateQtAutoGeneratorsTargets();
+  cmQtAutoGenDigestUPV autogenDigests = this->CreateQtAutoGeneratorsTargets();
 #endif
 
-  unsigned int i;
-
   // Add generator specific helper commands
-  for (i = 0; i < this->LocalGenerators.size(); ++i) {
-    this->LocalGenerators[i]->AddHelperCommands();
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
+    localGen->AddHelperCommands();
   }
 
   // Finalize the set of compile features for each target.
@@ -1281,26 +1264,23 @@ bool cmGlobalGenerator::Compute()
   // on the original cmTarget instance.  It accumulates features
   // across all configurations.  Some refactoring is needed to
   // compute a per-config resulta purely during generation.
-  for (i = 0; i < this->LocalGenerators.size(); ++i) {
-    if (!this->LocalGenerators[i]->ComputeTargetCompileFeatures()) {
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
+    if (!localGen->ComputeTargetCompileFeatures()) {
       return false;
     }
   }
 
 #ifdef CMAKE_BUILD_WITH_CMAKE
-  for (std::vector<cmGeneratorTarget const*>::iterator it =
-         autogenTargets.begin();
-       it != autogenTargets.end(); ++it) {
-    cmQtAutoGeneratorInitializer::SetupAutoGenerateTarget(*it);
+  for (cmQtAutoGenDigestUP const& digest : autogenDigests) {
+    cmQtAutoGeneratorInitializer::SetupAutoGenerateTarget(*digest);
   }
+  autogenDigests.clear();
 #endif
 
-  for (i = 0; i < this->LocalGenerators.size(); ++i) {
-    cmMakefile* mf = this->LocalGenerators[i]->GetMakefile();
-    std::vector<cmInstallGenerator*>& gens = mf->GetInstallGenerators();
-    for (std::vector<cmInstallGenerator*>::const_iterator git = gens.begin();
-         git != gens.end(); ++git) {
-      (*git)->Compute(this->LocalGenerators[i]);
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
+    cmMakefile* mf = localGen->GetMakefile();
+    for (cmInstallGenerator* g : mf->GetInstallGenerators()) {
+      g->Compute(localGen);
     }
   }
 
@@ -1308,15 +1288,15 @@ bool cmGlobalGenerator::Compute()
 
   // Trace the dependencies, after that no custom commands should be added
   // because their dependencies might not be handled correctly
-  for (i = 0; i < this->LocalGenerators.size(); ++i) {
-    this->LocalGenerators[i]->TraceDependencies();
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
+    localGen->TraceDependencies();
   }
 
   this->ForceLinkerLanguages();
 
   // Compute the manifest of main targets generated.
-  for (i = 0; i < this->LocalGenerators.size(); ++i) {
-    this->LocalGenerators[i]->ComputeTargetManifest();
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
+    localGen->ComputeTargetManifest();
   }
 
   // Compute the inter-target dependencies.
@@ -1324,8 +1304,8 @@ bool cmGlobalGenerator::Compute()
     return false;
   }
 
-  for (i = 0; i < this->LocalGenerators.size(); ++i) {
-    this->LocalGenerators[i]->ComputeHomeRelativeOutputPath();
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
+    localGen->ComputeHomeRelativeOutputPath();
   }
 
   return true;
@@ -1352,17 +1332,15 @@ void cmGlobalGenerator::Generate()
       "Generating", (static_cast<float>(i) + 1.0f) /
         static_cast<float>(this->LocalGenerators.size()));
   }
-  this->SetCurrentMakefile(CM_NULLPTR);
+  this->SetCurrentMakefile(nullptr);
 
   if (!this->GenerateCPackPropertiesFile()) {
     this->GetCMakeInstance()->IssueMessage(
       cmake::FATAL_ERROR, "Could not write CPack properties file.");
   }
 
-  for (std::map<std::string, cmExportBuildFileGenerator*>::iterator it =
-         this->BuildExportSets.begin();
-       it != this->BuildExportSets.end(); ++it) {
-    if (!it->second->GenerateImportFile()) {
+  for (auto& buildExpSet : this->BuildExportSets) {
+    if (!buildExpSet.second->GenerateImportFile()) {
       if (!cmSystemTools::GetErrorOccuredFlag()) {
         this->GetCMakeInstance()->IssueMessage(cmake::FATAL_ERROR,
                                                "Could not write export file.");
@@ -1375,7 +1353,7 @@ void cmGlobalGenerator::Generate()
 
   this->WriteSummary();
 
-  if (this->ExtraGenerator != CM_NULLPTR) {
+  if (this->ExtraGenerator != nullptr) {
     this->ExtraGenerator->Generate();
   }
 
@@ -1384,10 +1362,8 @@ void cmGlobalGenerator::Generate()
     w << cmPolicies::GetPolicyWarning(cmPolicies::CMP0042) << "\n";
     w << "MACOSX_RPATH is not specified for"
          " the following targets:\n";
-    for (std::set<std::string>::iterator iter =
-           this->CMP0042WarnTargets.begin();
-         iter != this->CMP0042WarnTargets.end(); ++iter) {
-      w << " " << *iter << "\n";
+    for (std::string const& t : this->CMP0042WarnTargets) {
+      w << " " << t << "\n";
     }
     this->GetCMakeInstance()->IssueMessage(cmake::AUTHOR_WARNING, w.str());
   }
@@ -1402,10 +1378,8 @@ void cmGlobalGenerator::Generate()
       "settings:\n"
       ;
     /* clang-format on */
-    for (std::set<std::string>::iterator iter =
-           this->CMP0068WarnTargets.begin();
-         iter != this->CMP0068WarnTargets.end(); ++iter) {
-      w << " " << *iter << "\n";
+    for (std::string const& t : this->CMP0068WarnTargets) {
+      w << " " << t << "\n";
     }
     this->GetCMakeInstance()->IssueMessage(cmake::AUTHOR_WARNING, w.str());
   }
@@ -1420,68 +1394,69 @@ bool cmGlobalGenerator::ComputeTargetDepends()
     return false;
   }
   std::vector<cmGeneratorTarget const*> const& targets = ctd.GetTargets();
-  for (std::vector<cmGeneratorTarget const*>::const_iterator ti =
-         targets.begin();
-       ti != targets.end(); ++ti) {
-    ctd.GetTargetDirectDepends(*ti, this->TargetDependencies[*ti]);
+  for (cmGeneratorTarget const* target : targets) {
+    ctd.GetTargetDirectDepends(target, this->TargetDependencies[target]);
   }
   return true;
 }
 
-std::vector<const cmGeneratorTarget*>
-cmGlobalGenerator::CreateQtAutoGeneratorsTargets()
+cmQtAutoGenDigestUPV cmGlobalGenerator::CreateQtAutoGeneratorsTargets()
 {
-  std::vector<const cmGeneratorTarget*> autogenTargets;
+  cmQtAutoGenDigestUPV autogenDigests;
 
 #ifdef CMAKE_BUILD_WITH_CMAKE
-  for (unsigned int i = 0; i < this->LocalGenerators.size(); ++i) {
-    std::vector<cmGeneratorTarget*> targets =
-      this->LocalGenerators[i]->GetGeneratorTargets();
-    std::vector<cmGeneratorTarget*> filteredTargets;
-    filteredTargets.reserve(targets.size());
-    for (std::vector<cmGeneratorTarget*>::iterator ti = targets.begin();
-         ti != targets.end(); ++ti) {
-      if ((*ti)->GetType() == cmStateEnums::GLOBAL_TARGET) {
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
+    const std::vector<cmGeneratorTarget*>& targets =
+      localGen->GetGeneratorTargets();
+    // Find targets that require AUTOGEN processing
+    for (cmGeneratorTarget* target : targets) {
+      if (target->GetType() == cmStateEnums::GLOBAL_TARGET) {
         continue;
       }
-      if ((*ti)->GetType() != cmStateEnums::EXECUTABLE &&
-          (*ti)->GetType() != cmStateEnums::STATIC_LIBRARY &&
-          (*ti)->GetType() != cmStateEnums::SHARED_LIBRARY &&
-          (*ti)->GetType() != cmStateEnums::MODULE_LIBRARY &&
-          (*ti)->GetType() != cmStateEnums::OBJECT_LIBRARY) {
+      if (target->GetType() != cmStateEnums::EXECUTABLE &&
+          target->GetType() != cmStateEnums::STATIC_LIBRARY &&
+          target->GetType() != cmStateEnums::SHARED_LIBRARY &&
+          target->GetType() != cmStateEnums::MODULE_LIBRARY &&
+          target->GetType() != cmStateEnums::OBJECT_LIBRARY) {
         continue;
       }
-      if ((!(*ti)->GetPropertyAsBool("AUTOMOC") &&
-           !(*ti)->GetPropertyAsBool("AUTOUIC") &&
-           !(*ti)->GetPropertyAsBool("AUTORCC")) ||
-          (*ti)->IsImported()) {
+      if (target->IsImported()) {
         continue;
       }
-      // don't do anything if there is no Qt4 or Qt5Core (which contains moc):
-      cmMakefile* mf = (*ti)->Target->GetMakefile();
-      std::string qtMajorVersion = mf->GetSafeDefinition("QT_VERSION_MAJOR");
-      if (qtMajorVersion == "") {
-        qtMajorVersion = mf->GetSafeDefinition("Qt5Core_VERSION_MAJOR");
-      }
-      if (qtMajorVersion != "4" && qtMajorVersion != "5") {
+
+      const bool mocEnabled = target->GetPropertyAsBool("AUTOMOC");
+      const bool uicEnabled = target->GetPropertyAsBool("AUTOUIC");
+      const bool rccEnabled = target->GetPropertyAsBool("AUTORCC");
+      if (!mocEnabled && !uicEnabled && !rccEnabled) {
         continue;
       }
 
-      cmGeneratorTarget* gt = *ti;
+      std::string qtVersionMajor =
+        cmQtAutoGeneratorInitializer::GetQtMajorVersion(target);
+      // don't do anything if there is no Qt4 or Qt5Core (which contains moc)
+      if (qtVersionMajor != "4" && qtVersionMajor != "5") {
+        continue;
+      }
 
-      cmQtAutoGeneratorInitializer::InitializeAutogenSources(gt);
-      filteredTargets.push_back(gt);
-    }
-    for (std::vector<cmGeneratorTarget*>::iterator ti =
-           filteredTargets.begin();
-         ti != filteredTargets.end(); ++ti) {
-      cmQtAutoGeneratorInitializer::InitializeAutogenTarget(
-        this->LocalGenerators[i], *ti);
-      autogenTargets.push_back(*ti);
+      {
+        cmQtAutoGenDigestUP digest(new cmQtAutoGenDigest(target));
+        digest->QtVersionMajor = std::move(qtVersionMajor);
+        digest->QtVersionMinor =
+          cmQtAutoGeneratorInitializer::GetQtMinorVersion(
+            target, digest->QtVersionMajor);
+        digest->MocEnabled = mocEnabled;
+        digest->UicEnabled = uicEnabled;
+        digest->RccEnabled = rccEnabled;
+        autogenDigests.emplace_back(std::move(digest));
+      }
     }
   }
+  // Initialize autogen targets
+  for (const cmQtAutoGenDigestUP& digest : autogenDigests) {
+    cmQtAutoGeneratorInitializer::InitializeAutogenTarget(*digest);
+  }
 #endif
-  return autogenTargets;
+  return autogenDigests;
 }
 
 cmLinkLineComputer* cmGlobalGenerator::CreateLinkLineComputer(
@@ -1502,17 +1477,15 @@ void cmGlobalGenerator::FinalizeTargetCompileInfo()
     this->CMakeInstance->GetState()->GetEnabledLanguages();
 
   // Construct per-target generator information.
-  for (unsigned int i = 0; i < this->Makefiles.size(); ++i) {
-    cmMakefile* mf = this->Makefiles[i];
-
+  for (cmMakefile* mf : this->Makefiles) {
     const cmStringRange noconfig_compile_definitions =
       mf->GetCompileDefinitionsEntries();
     const cmBacktraceRange noconfig_compile_definitions_bts =
       mf->GetCompileDefinitionsBacktraces();
 
     cmTargets& targets = mf->GetTargets();
-    for (cmTargets::iterator ti = targets.begin(); ti != targets.end(); ++ti) {
-      cmTarget* t = &ti->second;
+    for (auto& target : targets) {
+      cmTarget* t = &target.second;
       if (t->GetType() == cmStateEnums::GLOBAL_TARGET) {
         continue;
       }
@@ -1537,10 +1510,9 @@ void cmGlobalGenerator::FinalizeTargetCompileInfo()
         std::vector<std::string> configs;
         mf->GetConfigurations(configs);
 
-        for (std::vector<std::string>::const_iterator ci = configs.begin();
-             ci != configs.end(); ++ci) {
+        for (std::string const& c : configs) {
           std::string defPropName = "COMPILE_DEFINITIONS_";
-          defPropName += cmSystemTools::UpperCase(*ci);
+          defPropName += cmSystemTools::UpperCase(c);
           t->AppendProperty(defPropName, mf->GetProperty(defPropName));
         }
       }
@@ -1549,10 +1521,9 @@ void cmGlobalGenerator::FinalizeTargetCompileInfo()
     // The standard include directories for each language
     // should be treated as system include directories.
     std::set<std::string> standardIncludesSet;
-    for (std::vector<std::string>::const_iterator li = langs.begin();
-         li != langs.end(); ++li) {
+    for (std::string const& li : langs) {
       std::string const standardIncludesVar =
-        "CMAKE_" + *li + "_STANDARD_INCLUDE_DIRECTORIES";
+        "CMAKE_" + li + "_STANDARD_INCLUDE_DIRECTORIES";
       std::string const standardIncludesStr =
         mf->GetSafeDefinition(standardIncludesVar);
       std::vector<std::string> standardIncludesVec;
@@ -1571,8 +1542,8 @@ void cmGlobalGenerator::CreateGeneratorTargets(
 {
   if (targetTypes == AllTargets) {
     cmTargets& targets = mf->GetTargets();
-    for (cmTargets::iterator ti = targets.begin(); ti != targets.end(); ++ti) {
-      cmTarget* t = &ti->second;
+    for (auto& target : targets) {
+      cmTarget* t = &target.second;
       cmGeneratorTarget* gt = new cmGeneratorTarget(t, lg);
       lg->AddGeneratorTarget(gt);
     }
@@ -1580,9 +1551,8 @@ void cmGlobalGenerator::CreateGeneratorTargets(
 
   std::vector<cmTarget*> itgts = mf->GetImportedTargets();
 
-  for (std::vector<cmTarget*>::const_iterator j = itgts.begin();
-       j != itgts.end(); ++j) {
-    lg->AddImportedGeneratorTarget(importedMap.find(*j)->second);
+  for (cmTarget* t : itgts) {
+    lg->AddImportedGeneratorTarget(importedMap.find(t)->second);
   }
 }
 
@@ -1591,13 +1561,11 @@ void cmGlobalGenerator::CreateGeneratorTargets(TargetTypes targetTypes)
   std::map<cmTarget*, cmGeneratorTarget*> importedMap;
   for (unsigned int i = 0; i < this->Makefiles.size(); ++i) {
     cmMakefile* mf = this->Makefiles[i];
-    for (std::vector<cmTarget*>::const_iterator j =
-           mf->GetOwnedImportedTargets().begin();
-         j != mf->GetOwnedImportedTargets().end(); ++j) {
+    for (cmTarget* ownedImpTgt : mf->GetOwnedImportedTargets()) {
       cmLocalGenerator* lg = this->LocalGenerators[i];
-      cmGeneratorTarget* gt = new cmGeneratorTarget(*j, lg);
+      cmGeneratorTarget* gt = new cmGeneratorTarget(ownedImpTgt, lg);
       lg->AddOwnedImportedGeneratorTarget(gt);
-      importedMap[*j] = gt;
+      importedMap[ownedImpTgt] = gt;
     }
   }
 
@@ -1644,30 +1612,30 @@ void cmGlobalGenerator::CheckTargetProperties()
   for (unsigned int i = 0; i < this->Makefiles.size(); ++i) {
     this->Makefiles[i]->ConfigureFinalPass();
     cmTargets& targets = this->Makefiles[i]->GetTargets();
-    for (cmTargets::iterator l = targets.begin(); l != targets.end(); l++) {
-      if (l->second.GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    for (auto const& target : targets) {
+      if (target.second.GetType() == cmStateEnums::INTERFACE_LIBRARY) {
         continue;
       }
       const cmTarget::LinkLibraryVectorType& libs =
-        l->second.GetOriginalLinkLibraries();
-      for (cmTarget::LinkLibraryVectorType::const_iterator lib = libs.begin();
-           lib != libs.end(); ++lib) {
-        if (lib->first.size() > 9 &&
-            cmSystemTools::IsNOTFOUND(lib->first.c_str())) {
-          std::string varName = lib->first.substr(0, lib->first.size() - 9);
+        target.second.GetOriginalLinkLibraries();
+      for (auto const& lib : libs) {
+        if (lib.first.size() > 9 &&
+            cmSystemTools::IsNOTFOUND(lib.first.c_str())) {
+          std::string varName = lib.first.substr(0, lib.first.size() - 9);
           if (state->GetCacheEntryPropertyAsBool(varName, "ADVANCED")) {
             varName += " (ADVANCED)";
           }
           std::string text = notFoundMap[varName];
           text += "\n    linked by target \"";
-          text += l->second.GetName();
+          text += target.second.GetName();
           text += "\" in directory ";
           text += this->Makefiles[i]->GetCurrentSourceDirectory();
           notFoundMap[varName] = text;
         }
       }
       std::vector<std::string> incs;
-      const char* incDirProp = l->second.GetProperty("INCLUDE_DIRECTORIES");
+      const char* incDirProp =
+        target.second.GetProperty("INCLUDE_DIRECTORIES");
       if (!incDirProp) {
         continue;
       }
@@ -1677,10 +1645,9 @@ void cmGlobalGenerator::CheckTargetProperties()
 
       cmSystemTools::ExpandListArgument(incDirs, incs);
 
-      for (std::vector<std::string>::const_iterator incDir = incs.begin();
-           incDir != incs.end(); ++incDir) {
-        if (incDir->size() > 9 && cmSystemTools::IsNOTFOUND(incDir->c_str())) {
-          std::string varName = incDir->substr(0, incDir->size() - 9);
+      for (std::string const& incDir : incs) {
+        if (incDir.size() > 9 && cmSystemTools::IsNOTFOUND(incDir.c_str())) {
+          std::string varName = incDir.substr(0, incDir.size() - 9);
           if (state->GetCacheEntryPropertyAsBool(varName, "ADVANCED")) {
             varName += " (ADVANCED)";
           }
@@ -1699,11 +1666,9 @@ void cmGlobalGenerator::CheckTargetProperties()
 
   if (!notFoundMap.empty()) {
     std::string notFoundVars;
-    for (std::map<std::string, std::string>::const_iterator ii =
-           notFoundMap.begin();
-         ii != notFoundMap.end(); ++ii) {
-      notFoundVars += ii->first;
-      notFoundVars += ii->second;
+    for (auto const& notFound : notFoundMap) {
+      notFoundVars += notFound.first;
+      notFoundVars += notFound.second;
       notFoundVars += "\n";
     }
     cmSystemTools::Error("The following variables are used in this project, "
@@ -1815,7 +1780,7 @@ int cmGlobalGenerator::Build(const std::string& /*unused*/,
     output += "\n";
 
     if (!cmSystemTools::RunSingleCommand(cleanCommand, outputPtr, outputPtr,
-                                         &retVal, CM_NULLPTR, outputflag,
+                                         &retVal, nullptr, outputflag,
                                          timeout)) {
       cmSystemTools::SetRunCommandHideConsole(hideconsole);
       cmSystemTools::Error("Generator: execution of make clean failed.");
@@ -1834,7 +1799,7 @@ int cmGlobalGenerator::Build(const std::string& /*unused*/,
   output += "\n";
 
   if (!cmSystemTools::RunSingleCommand(makeCommand, outputPtr, outputPtr,
-                                       &retVal, CM_NULLPTR, outputflag,
+                                       &retVal, nullptr, outputflag,
                                        timeout)) {
     cmSystemTools::SetRunCommandHideConsole(hideconsole);
     cmSystemTools::Error(
@@ -2035,16 +2000,15 @@ int cmGlobalGenerator::GetLinkerPreference(const std::string& lang) const
 void cmGlobalGenerator::FillProjectMap()
 {
   this->ProjectMap.clear(); // make sure we start with a clean map
-  unsigned int i;
-  for (i = 0; i < this->LocalGenerators.size(); ++i) {
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
     // for each local generator add all projects
-    cmStateSnapshot snp = this->LocalGenerators[i]->GetStateSnapshot();
+    cmStateSnapshot snp = localGen->GetStateSnapshot();
     std::string name;
     do {
       std::string snpProjName = snp.GetProjectName();
       if (name != snpProjName) {
         name = snpProjName;
-        this->ProjectMap[name].push_back(this->LocalGenerators[i]);
+        this->ProjectMap[name].push_back(localGen);
       }
       snp = snp.GetBuildsystemDirectoryParent();
     } while (snp.IsValid());
@@ -2057,22 +2021,20 @@ cmMakefile* cmGlobalGenerator::FindMakefile(const std::string& start_dir) const
   if (i != this->MakefileSearchIndex.end()) {
     return i->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 ///! Find a local generator by its startdirectory
 cmLocalGenerator* cmGlobalGenerator::FindLocalGenerator(
   const std::string& start_dir) const
 {
-  for (std::vector<cmLocalGenerator*>::const_iterator it =
-         this->LocalGenerators.begin();
-       it != this->LocalGenerators.end(); ++it) {
-    std::string sd = (*it)->GetCurrentSourceDirectory();
+  for (cmLocalGenerator* lg : this->LocalGenerators) {
+    std::string sd = lg->GetCurrentSourceDirectory();
     if (sd == start_dir) {
-      return *it;
+      return lg;
     }
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmGlobalGenerator::AddAlias(const std::string& name,
@@ -2117,7 +2079,7 @@ cmTarget* cmGlobalGenerator::FindTargetImpl(std::string const& name) const
   if (i != this->TargetSearchIndex.end()) {
     return i->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmGeneratorTarget* cmGlobalGenerator::FindGeneratorTargetImpl(
@@ -2128,7 +2090,7 @@ cmGeneratorTarget* cmGlobalGenerator::FindGeneratorTargetImpl(
   if (i != this->GeneratorTargetSearchIndex.end()) {
     return i->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmTarget* cmGlobalGenerator::FindTarget(const std::string& name,
@@ -2413,7 +2375,7 @@ void cmGlobalGenerator::AddGlobalTarget_Install(
 
     // install_strip
     const char* install_strip = this->GetInstallStripTargetName();
-    if ((install_strip != CM_NULLPTR) && (mf->IsSet("CMAKE_STRIP"))) {
+    if ((install_strip != nullptr) && (mf->IsSet("CMAKE_STRIP"))) {
       gti.Name = install_strip;
       gti.Message = "Installing the project stripped...";
       gti.UsesTerminal = true;
@@ -2470,16 +2432,15 @@ cmTarget cmGlobalGenerator::CreateGlobalTarget(GlobalTargetInfo const& gti,
   std::vector<std::string> no_byproducts;
   std::vector<std::string> no_depends;
   // Store the custom command in the target.
-  cmCustomCommand cc(CM_NULLPTR, no_outputs, no_byproducts, no_depends,
-                     gti.CommandLines, CM_NULLPTR, gti.WorkingDir.c_str());
+  cmCustomCommand cc(nullptr, no_outputs, no_byproducts, no_depends,
+                     gti.CommandLines, nullptr, gti.WorkingDir.c_str());
   cc.SetUsesTerminal(gti.UsesTerminal);
   target.AddPostBuildCommand(cc);
   if (!gti.Message.empty()) {
     target.SetProperty("EchoString", gti.Message.c_str());
   }
-  for (std::vector<std::string>::const_iterator dit = gti.Depends.begin();
-       dit != gti.Depends.end(); ++dit) {
-    target.AddUtility(*dit);
+  for (std::string const& d : gti.Depends) {
+    target.AddUtility(d);
   }
 
   // Organize in the "predefined targets" folder:
@@ -2556,7 +2517,7 @@ void cmGlobalGenerator::SetExternalMakefileProjectGenerator(
   cmExternalMakefileProjectGenerator* extraGenerator)
 {
   this->ExtraGenerator = extraGenerator;
-  if (this->ExtraGenerator != CM_NULLPTR) {
+  if (this->ExtraGenerator != nullptr) {
     this->ExtraGenerator->SetGlobalGenerator(this);
   }
 }
@@ -2587,18 +2548,16 @@ void cmGlobalGenerator::GetTargetSets(TargetDependSet& projectTargets,
                                       GeneratorVector const& generators)
 {
   // loop over all local generators
-  for (std::vector<cmLocalGenerator*>::const_iterator i = generators.begin();
-       i != generators.end(); ++i) {
+  for (cmLocalGenerator* generator : generators) {
     // check to make sure generator is not excluded
-    if (this->IsExcluded(root, *i)) {
+    if (this->IsExcluded(root, generator)) {
       continue;
     }
     // Get the targets in the makefile
-    std::vector<cmGeneratorTarget*> tgts = (*i)->GetGeneratorTargets();
+    const std::vector<cmGeneratorTarget*>& tgts =
+      generator->GetGeneratorTargets();
     // loop over all the targets
-    for (std::vector<cmGeneratorTarget*>::iterator l = tgts.begin();
-         l != tgts.end(); ++l) {
-      cmGeneratorTarget* target = *l;
+    for (cmGeneratorTarget* target : tgts) {
       if (this->IsRootOnlyTarget(target) &&
           target->GetLocalGenerator() != root) {
         continue;
@@ -2625,8 +2584,8 @@ void cmGlobalGenerator::AddTargetDepends(cmGeneratorTarget const* target,
     // This is the first time we have encountered the target.
     // Recursively follow its dependencies.
     TargetDependSet const& ts = this->GetTargetDirectDepends(target);
-    for (TargetDependSet::const_iterator i = ts.begin(); i != ts.end(); ++i) {
-      this->AddTargetDepends(*i, projectTargets);
+    for (auto const& t : ts) {
+      this->AddTargetDepends(t, projectTargets);
     }
   }
 }
@@ -2771,11 +2730,9 @@ void cmGlobalGenerator::WriteRuleHashes(std::string const& pfile)
   } else {
     cmGeneratedFileStream fout(pfile.c_str());
     fout << "# Hashes of file build rules.\n";
-    for (std::map<std::string, RuleHash>::const_iterator rhi =
-           this->RuleHashes.begin();
-         rhi != this->RuleHashes.end(); ++rhi) {
-      fout.write(rhi->second.Data, 32);
-      fout << " " << rhi->first << "\n";
+    for (auto const& rh : this->RuleHashes) {
+      fout.write(rh.second.Data, 32);
+      fout << " " << rh.first << "\n";
     }
   }
 }
@@ -2788,16 +2745,14 @@ void cmGlobalGenerator::WriteSummary()
   fname += "/TargetDirectories.txt";
   cmGeneratedFileStream fout(fname.c_str());
 
-  for (unsigned int i = 0; i < this->LocalGenerators.size(); ++i) {
-    std::vector<cmGeneratorTarget*> tgts =
-      this->LocalGenerators[i]->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::iterator it = tgts.begin();
-         it != tgts.end(); ++it) {
-      if ((*it)->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  for (cmLocalGenerator* lg : this->LocalGenerators) {
+    const std::vector<cmGeneratorTarget*>& tgts = lg->GetGeneratorTargets();
+    for (cmGeneratorTarget* tgt : tgts) {
+      if (tgt->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
         continue;
       }
-      this->WriteSummary(*it);
-      fout << (*it)->GetSupportDirectory() << "\n";
+      this->WriteSummary(tgt);
+      fout << tgt->GetSupportDirectory() << "\n";
     }
   }
 }
@@ -2812,7 +2767,12 @@ void cmGlobalGenerator::WriteSummary(cmGeneratorTarget* target)
 
 #ifdef CMAKE_BUILD_WITH_CMAKE
   // Check whether labels are enabled for this target.
-  if (const char* value = target->GetProperty("LABELS")) {
+  const char* targetLabels = target->GetProperty("LABELS");
+  const char* directoryLabels =
+    target->Target->GetMakefile()->GetProperty("LABELS");
+  const char* cmakeDirectoryLabels =
+    target->Target->GetMakefile()->GetDefinition("CMAKE_DIRECTORY_LABELS");
+  if (targetLabels || directoryLabels || cmakeDirectoryLabels) {
     Json::Value lj_root(Json::objectValue);
     Json::Value& lj_target = lj_root["target"] = Json::objectValue;
     lj_target["name"] = target->GetName();
@@ -2822,19 +2782,48 @@ void cmGlobalGenerator::WriteSummary(cmGeneratorTarget* target)
     cmSystemTools::MakeDirectory(dir.c_str());
     cmGeneratedFileStream fout(file.c_str());
 
+    std::vector<std::string> labels;
+
     // List the target-wide labels.  All sources in the target get
     // these labels.
-    std::vector<std::string> labels;
-    cmSystemTools::ExpandListArgument(value, labels);
-    if (!labels.empty()) {
-      fout << "# Target labels\n";
-      for (std::vector<std::string>::const_iterator li = labels.begin();
-           li != labels.end(); ++li) {
-        fout << " " << *li << "\n";
-        lj_target_labels.append(*li);
+    if (targetLabels) {
+      cmSystemTools::ExpandListArgument(targetLabels, labels);
+      if (!labels.empty()) {
+        fout << "# Target labels\n";
+        for (std::string const& l : labels) {
+          fout << " " << l << "\n";
+          lj_target_labels.append(l);
+        }
       }
     }
 
+    // List directory labels
+    std::vector<std::string> directoryLabelsList;
+    std::vector<std::string> cmakeDirectoryLabelsList;
+
+    if (directoryLabels) {
+      cmSystemTools::ExpandListArgument(directoryLabels, directoryLabelsList);
+    }
+
+    if (cmakeDirectoryLabels) {
+      cmSystemTools::ExpandListArgument(cmakeDirectoryLabels,
+                                        cmakeDirectoryLabelsList);
+    }
+
+    if (!directoryLabelsList.empty() || !cmakeDirectoryLabelsList.empty()) {
+      fout << "# Directory labels\n";
+    }
+
+    for (std::string const& li : directoryLabelsList) {
+      fout << " " << li << "\n";
+      lj_target_labels.append(li);
+    }
+
+    for (std::string const& li : cmakeDirectoryLabelsList) {
+      fout << " " << li << "\n";
+      lj_target_labels.append(li);
+    }
+
     // List the source files with any per-source labels.
     fout << "# Source files and their labels\n";
     std::vector<cmSourceFile*> sources;
@@ -2843,9 +2832,8 @@ void cmGlobalGenerator::WriteSummary(cmGeneratorTarget* target)
     if (configs.empty()) {
       configs.push_back("");
     }
-    for (std::vector<std::string>::const_iterator ci = configs.begin();
-         ci != configs.end(); ++ci) {
-      target->GetSourceFiles(sources, *ci);
+    for (std::string const& c : configs) {
+      target->GetSourceFiles(sources, c);
     }
     std::vector<cmSourceFile*>::const_iterator sourcesEnd =
       cmRemoveDuplicates(sources);
@@ -2860,10 +2848,9 @@ void cmGlobalGenerator::WriteSummary(cmGeneratorTarget* target)
         labels.clear();
         Json::Value& lj_source_labels = lj_source["labels"] = Json::arrayValue;
         cmSystemTools::ExpandListArgument(svalue, labels);
-        for (std::vector<std::string>::const_iterator li = labels.begin();
-             li != labels.end(); ++li) {
-          fout << " " << *li << "\n";
-          lj_source_labels.append(*li);
+        for (std::string const& label : labels) {
+          fout << " " << label << "\n";
+          lj_source_labels.append(label);
         }
       }
     }
@@ -2881,11 +2868,11 @@ void cmGlobalGenerator::WriteSummary(cmGeneratorTarget* target)
 std::string cmGlobalGenerator::EscapeJSON(const std::string& s)
 {
   std::string result;
-  for (std::string::size_type i = 0; i < s.size(); ++i) {
-    if (s[i] == '"' || s[i] == '\\') {
+  for (char i : s) {
+    if (i == '"' || i == '\\') {
       result += '\\';
     }
-    result += s[i];
+    result += i;
   }
   return result;
 }
@@ -2905,18 +2892,16 @@ cmGlobalGenerator::GetFilenameTargetDepends(cmSourceFile* sf) const
 void cmGlobalGenerator::CreateEvaluationSourceFiles(
   std::string const& config) const
 {
-  unsigned int i;
-  for (i = 0; i < this->LocalGenerators.size(); ++i) {
-    this->LocalGenerators[i]->CreateEvaluationFileOutputs(config);
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
+    localGen->CreateEvaluationFileOutputs(config);
   }
 }
 
 void cmGlobalGenerator::ProcessEvaluationFiles()
 {
   std::vector<std::string> generatedFiles;
-  unsigned int i;
-  for (i = 0; i < this->LocalGenerators.size(); ++i) {
-    this->LocalGenerators[i]->ProcessEvaluationFiles(generatedFiles);
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
+    localGen->ProcessEvaluationFiles(generatedFiles);
   }
 }
 
@@ -2947,9 +2932,8 @@ bool cmGlobalGenerator::GenerateCPackPropertiesFile()
   cmGeneratedFileStream file(path.c_str());
   file << "# CPack properties\n";
 
-  for (cmake::InstalledFilesMap::const_iterator i = installedFiles.begin();
-       i != installedFiles.end(); ++i) {
-    cmInstalledFile const& installedFile = i->second;
+  for (auto const& i : installedFiles) {
+    cmInstalledFile const& installedFile = i.second;
 
     cmCPackPropertiesGenerator cpackPropertiesGenerator(lg, installedFile,
                                                         configs);
diff --git a/Source/cmGlobalGenerator.h b/Source/cmGlobalGenerator.h
index 871178be1..18ca682c7 100644
--- a/Source/cmGlobalGenerator.h
+++ b/Source/cmGlobalGenerator.h
@@ -3,23 +3,24 @@
 #ifndef cmGlobalGenerator_h
 #define cmGlobalGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <map>
 #include <set>
 #include <string>
+#include <unordered_map>
 #include <utility>
 #include <vector>
 
 #include "cmCustomCommandLines.h"
 #include "cmExportSetMap.h"
+#include "cmQtAutoGenDigest.h"
 #include "cmStateSnapshot.h"
 #include "cmSystemTools.h"
 #include "cmTarget.h"
 #include "cmTargetDepend.h"
 #include "cm_codecvt.hxx"
-#include "cm_unordered_map.hxx"
 
 #if defined(CMAKE_BUILD_WITH_CMAKE)
 #include "cmFileLockPool.h"
@@ -187,9 +188,15 @@ public:
     return this->LocalGenerators;
   }
 
-  cmMakefile* GetCurrentMakefile() const { return this->CurrentMakefile; }
+  cmMakefile* GetCurrentMakefile() const
+  {
+    return this->CurrentConfigureMakefile;
+  }
 
-  void SetCurrentMakefile(cmMakefile* mf) { this->CurrentMakefile = mf; }
+  void SetCurrentMakefile(cmMakefile* mf)
+  {
+    this->CurrentConfigureMakefile = mf;
+  }
 
   void AddMakefile(cmMakefile* mf);
 
@@ -289,15 +296,15 @@ public:
 
   virtual const char* GetAllTargetName() const { return "ALL_BUILD"; }
   virtual const char* GetInstallTargetName() const { return "INSTALL"; }
-  virtual const char* GetInstallLocalTargetName() const { return CM_NULLPTR; }
-  virtual const char* GetInstallStripTargetName() const { return CM_NULLPTR; }
-  virtual const char* GetPreinstallTargetName() const { return CM_NULLPTR; }
+  virtual const char* GetInstallLocalTargetName() const { return nullptr; }
+  virtual const char* GetInstallStripTargetName() const { return nullptr; }
+  virtual const char* GetPreinstallTargetName() const { return nullptr; }
   virtual const char* GetTestTargetName() const { return "RUN_TESTS"; }
   virtual const char* GetPackageTargetName() const { return "PACKAGE"; }
-  virtual const char* GetPackageSourceTargetName() const { return CM_NULLPTR; }
-  virtual const char* GetEditCacheTargetName() const { return CM_NULLPTR; }
-  virtual const char* GetRebuildCacheTargetName() const { return CM_NULLPTR; }
-  virtual const char* GetCleanTargetName() const { return CM_NULLPTR; }
+  virtual const char* GetPackageSourceTargetName() const { return nullptr; }
+  virtual const char* GetEditCacheTargetName() const { return nullptr; }
+  virtual const char* GetRebuildCacheTargetName() const { return nullptr; }
+  virtual const char* GetCleanTargetName() const { return nullptr; }
 
   // Lookup edit_cache target command preferred by this generator.
   virtual std::string GetEditCacheCommand() const { return ""; }
@@ -310,7 +317,7 @@ public:
   TargetDependSet const& GetTargetDirectDepends(
     const cmGeneratorTarget* target);
 
-  const std::map<std::string, std::vector<cmLocalGenerator*> >& GetProjectMap()
+  const std::map<std::string, std::vector<cmLocalGenerator*>>& GetProjectMap()
     const
   {
     return this->ProjectMap;
@@ -416,7 +423,8 @@ protected:
 
   virtual bool CheckALLOW_DUPLICATE_CUSTOM_TARGETS() const;
 
-  std::vector<const cmGeneratorTarget*> CreateQtAutoGeneratorsTargets();
+  // Qt auto generators
+  cmQtAutoGenDigestUPV CreateQtAutoGeneratorsTargets();
 
   std::string SelectMakeProgram(const std::string& makeProgram,
                                 const std::string& makeDefault = "") const;
@@ -460,9 +468,9 @@ protected:
   cmake* CMakeInstance;
   std::vector<cmMakefile*> Makefiles;
   std::vector<cmLocalGenerator*> LocalGenerators;
-  cmMakefile* CurrentMakefile;
+  cmMakefile* CurrentConfigureMakefile;
   // map from project name to vector of local generators in that project
-  std::map<std::string, std::vector<cmLocalGenerator*> > ProjectMap;
+  std::map<std::string, std::vector<cmLocalGenerator*>> ProjectMap;
 
   // Set of named installation components requested by the project.
   std::set<std::string> InstallComponents;
@@ -482,9 +490,10 @@ protected:
   const char* GetPredefinedTargetsFolder();
 
 private:
-  typedef CM_UNORDERED_MAP<std::string, cmTarget*> TargetMap;
-  typedef CM_UNORDERED_MAP<std::string, cmGeneratorTarget*> GeneratorTargetMap;
-  typedef CM_UNORDERED_MAP<std::string, cmMakefile*> MakefileMap;
+  typedef std::unordered_map<std::string, cmTarget*> TargetMap;
+  typedef std::unordered_map<std::string, cmGeneratorTarget*>
+    GeneratorTargetMap;
+  typedef std::unordered_map<std::string, cmMakefile*> MakefileMap;
   // Map efficiently from target name to cmTarget instance.
   // Do not use this structure for looping over all targets.
   // It contains both normal and globally visible imported targets.
@@ -550,7 +559,7 @@ private:
 
   void IndexMakefile(cmMakefile* mf);
 
-  virtual const char* GetBuildIgnoreErrorsFlag() const { return CM_NULLPTR; }
+  virtual const char* GetBuildIgnoreErrorsFlag() const { return nullptr; }
 
   // Cache directory content and target files to be built.
   struct DirectoryContent
@@ -573,7 +582,7 @@ private:
   // track targets to issue CMP0068 warning for.
   std::set<std::string> CMP0068WarnTargets;
 
-  mutable std::map<cmSourceFile*, std::set<cmGeneratorTarget const*> >
+  mutable std::map<cmSourceFile*, std::set<cmGeneratorTarget const*>>
     FilenameTargetDepends;
 
 #if defined(CMAKE_BUILD_WITH_CMAKE)
diff --git a/Source/cmGlobalGeneratorFactory.h b/Source/cmGlobalGeneratorFactory.h
index d5a6db06e..4e3e7705b 100644
--- a/Source/cmGlobalGeneratorFactory.h
+++ b/Source/cmGlobalGeneratorFactory.h
@@ -3,7 +3,7 @@
 #ifndef cmGlobalGeneratorFactory_h
 #define cmGlobalGeneratorFactory_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -45,31 +45,31 @@ class cmGlobalGeneratorSimpleFactory : public cmGlobalGeneratorFactory
 public:
   /** Create a GlobalGenerator */
   cmGlobalGenerator* CreateGlobalGenerator(const std::string& name,
-                                           cmake* cm) const CM_OVERRIDE
+                                           cmake* cm) const override
   {
     if (name != T::GetActualName()) {
-      return CM_NULLPTR;
+      return nullptr;
     }
     return new T(cm);
   }
 
   /** Get the documentation entry for this factory */
-  void GetDocumentation(cmDocumentationEntry& entry) const CM_OVERRIDE
+  void GetDocumentation(cmDocumentationEntry& entry) const override
   {
     T::GetDocumentation(entry);
   }
 
   /** Get the names of the current registered generators */
-  void GetGenerators(std::vector<std::string>& names) const CM_OVERRIDE
+  void GetGenerators(std::vector<std::string>& names) const override
   {
     names.push_back(T::GetActualName());
   }
 
   /** Determine whether or not this generator supports toolsets */
-  bool SupportsToolset() const CM_OVERRIDE { return T::SupportsToolset(); }
+  bool SupportsToolset() const override { return T::SupportsToolset(); }
 
   /** Determine whether or not this generator supports platforms */
-  bool SupportsPlatform() const CM_OVERRIDE { return T::SupportsPlatform(); }
+  bool SupportsPlatform() const override { return T::SupportsPlatform(); }
 };
 
 #endif
diff --git a/Source/cmGlobalGhsMultiGenerator.cxx b/Source/cmGlobalGhsMultiGenerator.cxx
index 42ab4d98a..788a1798a 100644
--- a/Source/cmGlobalGhsMultiGenerator.cxx
+++ b/Source/cmGlobalGhsMultiGenerator.cxx
@@ -260,7 +260,7 @@ void cmGlobalGhsMultiGenerator::Generate()
     for (unsigned int i = 0; i < this->LocalGenerators.size(); ++i) {
       cmLocalGhsMultiGenerator* lg =
         static_cast<cmLocalGhsMultiGenerator*>(this->LocalGenerators[i]);
-      std::vector<cmGeneratorTarget*> tgts = lg->GetGeneratorTargets();
+      const std::vector<cmGeneratorTarget*>& tgts = lg->GetGeneratorTargets();
       this->UpdateBuildFiles(tgts);
     }
   }
@@ -436,9 +436,9 @@ std::string cmGlobalGhsMultiGenerator::GetFileNameFromPath(
 }
 
 void cmGlobalGhsMultiGenerator::UpdateBuildFiles(
-  std::vector<cmGeneratorTarget*> tgts)
+  const std::vector<cmGeneratorTarget*>& tgts)
 {
-  for (std::vector<cmGeneratorTarget*>::iterator tgtsI = tgts.begin();
+  for (std::vector<cmGeneratorTarget*>::const_iterator tgtsI = tgts.begin();
        tgtsI != tgts.end(); ++tgtsI) {
     const cmGeneratorTarget* tgt = *tgtsI;
     if (IsTgtForBuild(tgt)) {
diff --git a/Source/cmGlobalGhsMultiGenerator.h b/Source/cmGlobalGhsMultiGenerator.h
index 7b3eebbdf..7d4b2ba7f 100644
--- a/Source/cmGlobalGhsMultiGenerator.h
+++ b/Source/cmGlobalGhsMultiGenerator.h
@@ -57,7 +57,7 @@ public:
   /*
   * Determine what program to use for building the project.
   */
-  bool FindMakeProgram(cmMakefile* mf) CM_OVERRIDE;
+  bool FindMakeProgram(cmMakefile* mf) override;
 
   cmGeneratedFileStream* GetBuildFileStream()
   {
@@ -116,7 +116,7 @@ private:
     std::vector<cmsys::String>::const_iterator end,
     GhsMultiGpj::Types projType);
   static std::string GetFileNameFromPath(std::string const& path);
-  void UpdateBuildFiles(std::vector<cmGeneratorTarget*> tgts);
+  void UpdateBuildFiles(const std::vector<cmGeneratorTarget*>& tgts);
   bool IsTgtForBuild(const cmGeneratorTarget* tgt);
 
   std::vector<cmGeneratedFileStream*> TargetSubProjects;
diff --git a/Source/cmGlobalKdevelopGenerator.cxx b/Source/cmGlobalKdevelopGenerator.cxx
index e72c6e384..b1e630e29 100644
--- a/Source/cmGlobalKdevelopGenerator.cxx
+++ b/Source/cmGlobalKdevelopGenerator.cxx
@@ -16,7 +16,6 @@
 
 #include "cmsys/Directory.hxx"
 #include "cmsys/FStream.hxx"
-#include <map>
 #include <set>
 #include <string.h>
 #include <utility>
@@ -49,15 +48,13 @@ void cmGlobalKdevelopGenerator::Generate()
 {
   // for each sub project in the project create
   // a kdevelop project
-  for (std::map<std::string, std::vector<cmLocalGenerator*> >::const_iterator
-         it = this->GlobalGenerator->GetProjectMap().begin();
-       it != this->GlobalGenerator->GetProjectMap().end(); ++it) {
-    std::string outputDir = it->second[0]->GetCurrentBinaryDirectory();
-    std::string projectDir = it->second[0]->GetSourceDirectory();
-    std::string projectName = it->second[0]->GetProjectName();
+  for (auto const& it : this->GlobalGenerator->GetProjectMap()) {
+    std::string outputDir = it.second[0]->GetCurrentBinaryDirectory();
+    std::string projectDir = it.second[0]->GetSourceDirectory();
+    std::string projectName = it.second[0]->GetProjectName();
     std::string cmakeFilePattern("CMakeLists.txt;*.cmake;");
     std::string fileToOpen;
-    const std::vector<cmLocalGenerator*>& lgs = it->second;
+    const std::vector<cmLocalGenerator*>& lgs = it.second;
     // create the project.kdevelop.filelist file
     if (!this->CreateFilelistFile(lgs, outputDir, projectDir, projectName,
                                   cmakeFilePattern, fileToOpen)) {
@@ -67,15 +64,12 @@ void cmGlobalKdevelopGenerator::Generate()
     // try to find the name of an executable so we have something to
     // run from kdevelop for now just pick the first executable found
     std::string executable;
-    for (std::vector<cmLocalGenerator*>::const_iterator lg = lgs.begin();
-         lg != lgs.end(); lg++) {
+    for (cmLocalGenerator* lg : lgs) {
       std::vector<cmGeneratorTarget*> const& targets =
-        (*lg)->GetGeneratorTargets();
-      for (std::vector<cmGeneratorTarget*>::const_iterator ti =
-             targets.begin();
-           ti != targets.end(); ti++) {
-        if ((*ti)->GetType() == cmStateEnums::EXECUTABLE) {
-          executable = (*ti)->GetLocation("");
+        lg->GetGeneratorTargets();
+      for (cmGeneratorTarget* target : targets) {
+        if (target->GetType() == cmStateEnums::EXECUTABLE) {
+          executable = target->GetLocation("");
           break;
         }
       }
@@ -104,40 +98,35 @@ bool cmGlobalKdevelopGenerator::CreateFilelistFile(
   std::vector<std::string> const& hdrExts =
     this->GlobalGenerator->GetCMakeInstance()->GetHeaderExtensions();
 
-  for (std::vector<cmLocalGenerator*>::const_iterator it = lgs.begin();
-       it != lgs.end(); it++) {
-    cmMakefile* makefile = (*it)->GetMakefile();
+  for (cmLocalGenerator* lg : lgs) {
+    cmMakefile* makefile = lg->GetMakefile();
     const std::vector<std::string>& listFiles = makefile->GetListFiles();
-    for (std::vector<std::string>::const_iterator lt = listFiles.begin();
-         lt != listFiles.end(); lt++) {
-      tmp = *lt;
+    for (std::string const& listFile : listFiles) {
+      tmp = listFile;
       cmSystemTools::ReplaceString(tmp, projectDir.c_str(), "");
       // make sure the file is part of this source tree
       if ((tmp[0] != '/') &&
           (strstr(tmp.c_str(), cmake::GetCMakeFilesDirectoryPostSlash()) ==
-           CM_NULLPTR)) {
+           nullptr)) {
         files.insert(tmp);
         tmp = cmSystemTools::GetFilenameName(tmp);
         // add all files which dont match the default
         // */CMakeLists.txt;*cmake; to the file pattern
         if ((tmp != "CMakeLists.txt") &&
-            (strstr(tmp.c_str(), ".cmake") == CM_NULLPTR)) {
+            (strstr(tmp.c_str(), ".cmake") == nullptr)) {
           cmakeFilePattern += tmp + ";";
         }
       }
     }
 
     // get all sources
-    std::vector<cmGeneratorTarget*> targets = (*it)->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::iterator ti = targets.begin();
-         ti != targets.end(); ti++) {
+    const std::vector<cmGeneratorTarget*>& targets = lg->GetGeneratorTargets();
+    for (cmGeneratorTarget* gt : targets) {
       std::vector<cmSourceFile*> sources;
-      cmGeneratorTarget* gt = *ti;
       gt->GetSourceFiles(sources, gt->Target->GetMakefile()->GetSafeDefinition(
                                     "CMAKE_BUILD_TYPE"));
-      for (std::vector<cmSourceFile*>::const_iterator si = sources.begin();
-           si != sources.end(); si++) {
-        tmp = (*si)->GetFullPath();
+      for (cmSourceFile* sf : sources) {
+        tmp = sf->GetFullPath();
         std::string headerBasename = cmSystemTools::GetFilenamePath(tmp);
         headerBasename += "/";
         headerBasename += cmSystemTools::GetFilenameWithoutExtension(tmp);
@@ -146,16 +135,15 @@ bool cmGlobalKdevelopGenerator::CreateFilelistFile(
 
         if ((tmp[0] != '/') &&
             (strstr(tmp.c_str(), cmake::GetCMakeFilesDirectoryPostSlash()) ==
-             CM_NULLPTR) &&
+             nullptr) &&
             (cmSystemTools::GetFilenameExtension(tmp) != ".moc")) {
           files.insert(tmp);
 
           // check if there's a matching header around
-          for (std::vector<std::string>::const_iterator ext = hdrExts.begin();
-               ext != hdrExts.end(); ++ext) {
+          for (std::string const& hdrExt : hdrExts) {
             std::string hname = headerBasename;
             hname += ".";
-            hname += *ext;
+            hname += hdrExt;
             if (cmSystemTools::FileExists(hname.c_str())) {
               cmSystemTools::ReplaceString(hname, projectDir.c_str(), "");
               files.insert(hname);
@@ -164,13 +152,12 @@ bool cmGlobalKdevelopGenerator::CreateFilelistFile(
           }
         }
       }
-      for (std::vector<std::string>::const_iterator lt = listFiles.begin();
-           lt != listFiles.end(); lt++) {
-        tmp = *lt;
+      for (std::string const& listFile : listFiles) {
+        tmp = listFile;
         cmSystemTools::ReplaceString(tmp, projectDir.c_str(), "");
         if ((tmp[0] != '/') &&
             (strstr(tmp.c_str(), cmake::GetCMakeFilesDirectoryPostSlash()) ==
-             CM_NULLPTR)) {
+             nullptr)) {
           files.insert(tmp);
         }
       }
@@ -200,10 +187,9 @@ bool cmGlobalKdevelopGenerator::CreateFilelistFile(
   }
 
   fileToOpen = "";
-  for (std::set<std::string>::const_iterator it = files.begin();
-       it != files.end(); it++) {
+  for (std::string const& file : files) {
     // get the full path to the file
-    tmp = cmSystemTools::CollapseFullPath(*it, projectDir.c_str());
+    tmp = cmSystemTools::CollapseFullPath(file, projectDir.c_str());
     // just select the first source file
     if (fileToOpen.empty()) {
       std::string ext = cmSystemTools::GetFilenameExtension(tmp);
@@ -296,21 +282,20 @@ void cmGlobalKdevelopGenerator::MergeProjectFiles(
     return;
   }
 
-  for (std::vector<std::string>::const_iterator it = lines.begin();
-       it != lines.end(); it++) {
-    const char* line = (*it).c_str();
+  for (std::string const& l : lines) {
+    const char* line = l.c_str();
     // skip these tags as they are always replaced
-    if ((strstr(line, "<projectdirectory>") != CM_NULLPTR) ||
-        (strstr(line, "<projectmanagement>") != CM_NULLPTR) ||
-        (strstr(line, "<absoluteprojectpath>") != CM_NULLPTR) ||
-        (strstr(line, "<filelistdirectory>") != CM_NULLPTR) ||
-        (strstr(line, "<buildtool>") != CM_NULLPTR) ||
-        (strstr(line, "<builddir>") != CM_NULLPTR)) {
+    if ((strstr(line, "<projectdirectory>") != nullptr) ||
+        (strstr(line, "<projectmanagement>") != nullptr) ||
+        (strstr(line, "<absoluteprojectpath>") != nullptr) ||
+        (strstr(line, "<filelistdirectory>") != nullptr) ||
+        (strstr(line, "<buildtool>") != nullptr) ||
+        (strstr(line, "<builddir>") != nullptr)) {
       continue;
     }
 
     // output the line from the file if it is not one of the above tags
-    fout << *it << "\n";
+    fout << l << "\n";
     // if this is the <general> tag output the stuff that goes in the
     // general tag
     if (strstr(line, "<general>")) {
@@ -433,10 +418,8 @@ void cmGlobalKdevelopGenerator::CreateNewProjectFile(
   xml.EndElement(); // make
 
   xml.StartElement("blacklist");
-  for (std::vector<std::string>::const_iterator dirIt =
-         this->Blacklist.begin();
-       dirIt != this->Blacklist.end(); ++dirIt) {
-    xml.Element("path", *dirIt);
+  for (std::string const& dir : this->Blacklist) {
+    xml.Element("path", dir);
   }
   xml.EndElement();
 
diff --git a/Source/cmGlobalKdevelopGenerator.h b/Source/cmGlobalKdevelopGenerator.h
index bdcf8a190..d6c43f3f9 100644
--- a/Source/cmGlobalKdevelopGenerator.h
+++ b/Source/cmGlobalKdevelopGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmGlobalKdevelopGenerator_h
 #define cmGlobalKdevelopGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmExternalMakefileProjectGenerator.h"
 
@@ -30,7 +30,7 @@ public:
 
   static cmExternalMakefileProjectGeneratorFactory* GetFactory();
 
-  void Generate() CM_OVERRIDE;
+  void Generate() override;
 
 private:
   /*** Create the foo.kdevelop.filelist file, return false if it doesn't
diff --git a/Source/cmGlobalNMakeMakefileGenerator.h b/Source/cmGlobalNMakeMakefileGenerator.h
index 6eb21249d..05ab90435 100644
--- a/Source/cmGlobalNMakeMakefileGenerator.h
+++ b/Source/cmGlobalNMakeMakefileGenerator.h
@@ -27,7 +27,7 @@ public:
   static std::string GetActualName() { return "NMake Makefiles"; }
 
   /** Get encoding used by generator for makefile files */
-  codecvt::Encoding GetMakefileEncoding() const CM_OVERRIDE
+  codecvt::Encoding GetMakefileEncoding() const override
   {
     return codecvt::ANSI;
   }
diff --git a/Source/cmGlobalNinjaGenerator.cxx b/Source/cmGlobalNinjaGenerator.cxx
index 2eef9e492..d5531cbe8 100644
--- a/Source/cmGlobalNinjaGenerator.cxx
+++ b/Source/cmGlobalNinjaGenerator.cxx
@@ -10,6 +10,7 @@
 #include <ctype.h>
 #include <functional>
 #include <iterator>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 
@@ -32,7 +33,6 @@
 #include "cmTarget.h"
 #include "cmTargetDepend.h"
 #include "cmVersion.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 class cmLinkLineComputer;
@@ -90,12 +90,12 @@ std::string cmGlobalNinjaGenerator::EncodeRuleName(std::string const& name)
   // Ninja rule names must match "[a-zA-Z0-9_.-]+".  Use ".xx" to encode
   // "." and all invalid characters as hexadecimal.
   std::string encoded;
-  for (std::string::const_iterator i = name.begin(); i != name.end(); ++i) {
-    if (isalnum(*i) || *i == '_' || *i == '-') {
-      encoded += *i;
+  for (char i : name) {
+    if (isalnum(i) || i == '_' || i == '-') {
+      encoded += i;
     } else {
       char buf[16];
-      sprintf(buf, ".%02x", static_cast<unsigned int>(*i));
+      sprintf(buf, ".%02x", static_cast<unsigned int>(i));
       encoded += buf;
     }
   }
@@ -177,26 +177,23 @@ void cmGlobalNinjaGenerator::WriteBuild(
   // TODO: Better formatting for when there are multiple input/output files.
 
   // Write explicit dependencies.
-  for (cmNinjaDeps::const_iterator i = explicitDeps.begin();
-       i != explicitDeps.end(); ++i) {
-    arguments += " " + EncodeIdent(EncodePath(*i), os);
+  for (std::string const& explicitDep : explicitDeps) {
+    arguments += " " + EncodeIdent(EncodePath(explicitDep), os);
   }
 
   // Write implicit dependencies.
   if (!implicitDeps.empty()) {
     arguments += " |";
-    for (cmNinjaDeps::const_iterator i = implicitDeps.begin();
-         i != implicitDeps.end(); ++i) {
-      arguments += " " + EncodeIdent(EncodePath(*i), os);
+    for (std::string const& implicitDep : implicitDeps) {
+      arguments += " " + EncodeIdent(EncodePath(implicitDep), os);
     }
   }
 
   // Write order-only dependencies.
   if (!orderOnlyDeps.empty()) {
     arguments += " ||";
-    for (cmNinjaDeps::const_iterator i = orderOnlyDeps.begin();
-         i != orderOnlyDeps.end(); ++i) {
-      arguments += " " + EncodeIdent(EncodePath(*i), os);
+    for (std::string const& orderOnlyDep : orderOnlyDeps) {
+      arguments += " " + EncodeIdent(EncodePath(orderOnlyDep), os);
     }
   }
 
@@ -206,18 +203,16 @@ void cmGlobalNinjaGenerator::WriteBuild(
 
   // Write outputs files.
   build += "build";
-  for (cmNinjaDeps::const_iterator i = outputs.begin(); i != outputs.end();
-       ++i) {
-    build += " " + EncodeIdent(EncodePath(*i), os);
+  for (std::string const& output : outputs) {
+    build += " " + EncodeIdent(EncodePath(output), os);
     if (this->ComputingUnknownDependencies) {
-      this->CombinedBuildOutputs.insert(*i);
+      this->CombinedBuildOutputs.insert(output);
     }
   }
   if (!implicitOuts.empty()) {
     build += " |";
-    for (cmNinjaDeps::const_iterator i = implicitOuts.begin();
-         i != implicitOuts.end(); ++i) {
-      build += " " + EncodeIdent(EncodePath(*i), os);
+    for (std::string const& implicitOut : implicitOuts) {
+      build += " " + EncodeIdent(EncodePath(implicitOut), os);
     }
   }
   build += ":";
@@ -227,20 +222,18 @@ void cmGlobalNinjaGenerator::WriteBuild(
 
   // Write the variables bound to this build statement.
   std::ostringstream variable_assignments;
-  for (cmNinjaVars::const_iterator i = variables.begin(); i != variables.end();
-       ++i) {
-    cmGlobalNinjaGenerator::WriteVariable(variable_assignments, i->first,
-                                          i->second, "", 1);
+  for (auto const& variable : variables) {
+    cmGlobalNinjaGenerator::WriteVariable(variable_assignments, variable.first,
+                                          variable.second, "", 1);
   }
 
   // check if a response file rule should be used
   std::string buildstr = build;
   std::string assignments = variable_assignments.str();
-  const std::string& args = arguments;
   bool useResponseFile = false;
   if (cmdLineLimit < 0 ||
       (cmdLineLimit > 0 &&
-       (args.size() + buildstr.size() + assignments.size() + 1000) >
+       (arguments.size() + buildstr.size() + assignments.size() + 1000) >
          static_cast<size_t>(cmdLineLimit))) {
     variable_assignments.str(std::string());
     cmGlobalNinjaGenerator::WriteVariable(variable_assignments, "RSP_FILE",
@@ -252,7 +245,7 @@ void cmGlobalNinjaGenerator::WriteBuild(
     *usedResponseFile = useResponseFile;
   }
 
-  os << buildstr << args << assignments;
+  os << buildstr << arguments << assignments;
 }
 
 void cmGlobalNinjaGenerator::WritePhonyBuild(
@@ -311,8 +304,8 @@ void cmGlobalNinjaGenerator::WriteCustomCommandBuild(
   if (this->ComputingUnknownDependencies) {
     // we need to track every dependency that comes in, since we are trying
     // to find dependencies that are side effects of build commands
-    for (cmNinjaDeps::const_iterator i = deps.begin(); i != deps.end(); ++i) {
-      this->CombinedCustomCommandExplicitDependencies.insert(*i);
+    for (std::string const& dep : deps) {
+      this->CombinedCustomCommandExplicitDependencies.insert(dep);
     }
   }
 }
@@ -465,18 +458,17 @@ void cmGlobalNinjaGenerator::WriteDefault(std::ostream& os,
 {
   cmGlobalNinjaGenerator::WriteComment(os, comment);
   os << "default";
-  for (cmNinjaDeps::const_iterator i = targets.begin(); i != targets.end();
-       ++i) {
-    os << " " << *i;
+  for (std::string const& target : targets) {
+    os << " " << target;
   }
   os << "\n";
 }
 
 cmGlobalNinjaGenerator::cmGlobalNinjaGenerator(cmake* cm)
   : cmGlobalCommonGenerator(cm)
-  , BuildFileStream(CM_NULLPTR)
-  , RulesFileStream(CM_NULLPTR)
-  , CompileCommandsStream(CM_NULLPTR)
+  , BuildFileStream(nullptr)
+  , RulesFileStream(nullptr)
+  , CompileCommandsStream(nullptr)
   , Rules()
   , AllDependencies()
   , UsingGCCOnWindows(false)
@@ -582,8 +574,8 @@ bool cmGlobalNinjaGenerator::FindMakeProgram(cmMakefile* mf)
     command.push_back("--version");
     std::string version;
     std::string error;
-    if (!cmSystemTools::RunSingleCommand(command, &version, &error, CM_NULLPTR,
-                                         CM_NULLPTR,
+    if (!cmSystemTools::RunSingleCommand(command, &version, &error, nullptr,
+                                         nullptr,
                                          cmSystemTools::OUTPUT_NONE)) {
       mf->IssueMessage(cmake::FATAL_ERROR, "Running\n '" +
                          cmJoin(command, "' '") + "'\n"
@@ -670,12 +662,11 @@ void cmGlobalNinjaGenerator::EnableLanguage(
   std::vector<std::string> const& langs, cmMakefile* mf, bool optional)
 {
   this->cmGlobalGenerator::EnableLanguage(langs, mf, optional);
-  for (std::vector<std::string>::const_iterator l = langs.begin();
-       l != langs.end(); ++l) {
-    if (*l == "NONE") {
+  for (std::string const& l : langs) {
+    if (l == "NONE") {
       continue;
     }
-    this->ResolveLanguageCompiler(*l, mf, optional);
+    this->ResolveLanguageCompiler(l, mf, optional);
   }
 #ifdef _WIN32
   if (strcmp(mf->GetSafeDefinition("CMAKE_C_SIMULATE_ID"), "MSVC") != 0 &&
@@ -741,7 +732,7 @@ void cmGlobalNinjaGenerator::AddRule(
                                     description, comment, depfile, deptype,
                                     rspfile, rspcontent, restat, generator);
 
-  this->RuleCmdLength[name] = (int)command.size();
+  this->RuleCmdLength[name] = static_cast<int>(command.size());
 }
 
 bool cmGlobalNinjaGenerator::HasRule(const std::string& name)
@@ -805,7 +796,7 @@ void cmGlobalNinjaGenerator::CloseBuildFileStream()
 {
   if (this->BuildFileStream) {
     delete this->BuildFileStream;
-    this->BuildFileStream = CM_NULLPTR;
+    this->BuildFileStream = nullptr;
   } else {
     cmSystemTools::Error("Build file stream was not open.");
   }
@@ -847,7 +838,7 @@ void cmGlobalNinjaGenerator::CloseRulesFileStream()
 {
   if (this->RulesFileStream) {
     delete this->RulesFileStream;
-    this->RulesFileStream = CM_NULLPTR;
+    this->RulesFileStream = nullptr;
   } else {
     cmSystemTools::Error("Rules file stream was not open.");
   }
@@ -870,18 +861,24 @@ static void EnsureTrailingSlash(std::string& path)
 #endif
 }
 
-std::string cmGlobalNinjaGenerator::ConvertToNinjaPath(
+std::string const& cmGlobalNinjaGenerator::ConvertToNinjaPath(
   const std::string& path) const
 {
+  auto const f = ConvertToNinjaPathCache.find(path);
+  if (f != ConvertToNinjaPathCache.end()) {
+    return f->second;
+  }
+
   cmLocalNinjaGenerator* ng =
     static_cast<cmLocalNinjaGenerator*>(this->LocalGenerators[0]);
-  std::string convPath = ng->ConvertToRelativePath(
-    this->LocalGenerators[0]->GetState()->GetBinaryDirectory(), path);
+  const char* bin_dir = ng->GetState()->GetBinaryDirectory();
+  std::string convPath = ng->ConvertToRelativePath(bin_dir, path);
   convPath = this->NinjaOutputPath(convPath);
 #ifdef _WIN32
   std::replace(convPath.begin(), convPath.end(), '/', '\\');
 #endif
-  return convPath;
+  return ConvertToNinjaPathCache.emplace(path, std::move(convPath))
+    .first->second;
 }
 
 void cmGlobalNinjaGenerator::AddCXXCompileCommand(
@@ -928,7 +925,7 @@ void cmGlobalNinjaGenerator::CloseCompileCommandsStream()
   if (this->CompileCommandsStream) {
     *this->CompileCommandsStream << "\n]";
     delete this->CompileCommandsStream;
-    this->CompileCommandsStream = CM_NULLPTR;
+    this->CompileCommandsStream = nullptr;
   }
 }
 
@@ -952,15 +949,13 @@ void cmGlobalNinjaGenerator::AddDependencyToAll(const std::string& input)
 
 void cmGlobalNinjaGenerator::WriteAssumedSourceDependencies()
 {
-  for (std::map<std::string, std::set<std::string> >::iterator i =
-         this->AssumedSourceDependencies.begin();
-       i != this->AssumedSourceDependencies.end(); ++i) {
+  for (auto const& asd : this->AssumedSourceDependencies) {
     cmNinjaDeps deps;
-    std::copy(i->second.begin(), i->second.end(), std::back_inserter(deps));
+    std::copy(asd.second.begin(), asd.second.end(), std::back_inserter(deps));
     WriteCustomCommandBuild(/*command=*/"", /*description=*/"",
                             "Assume dependencies for generated source file.",
                             /*depfile*/ "", /*uses_terminal*/ false,
-                            /*restat*/ true, cmNinjaDeps(1, i->first), deps);
+                            /*restat*/ true, cmNinjaDeps(1, asd.first), deps);
   }
 }
 
@@ -1025,22 +1020,20 @@ void cmGlobalNinjaGenerator::AppendTargetDepends(
   if (target->GetType() == cmStateEnums::GLOBAL_TARGET) {
     // These depend only on other CMake-provided targets, e.g. "all".
     std::set<std::string> const& utils = target->GetUtilities();
-    for (std::set<std::string>::const_iterator i = utils.begin();
-         i != utils.end(); ++i) {
+    for (std::string const& util : utils) {
       std::string d =
         target->GetLocalGenerator()->GetCurrentBinaryDirectory() +
-        std::string("/") + *i;
+        std::string("/") + util;
       outputs.push_back(this->ConvertToNinjaPath(d));
     }
   } else {
     cmNinjaDeps outs;
     cmTargetDependSet const& targetDeps = this->GetTargetDirectDepends(target);
-    for (cmTargetDependSet::const_iterator i = targetDeps.begin();
-         i != targetDeps.end(); ++i) {
-      if ((*i)->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    for (cmTargetDepend const& targetDep : targetDeps) {
+      if (targetDep->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
         continue;
       }
-      this->AppendTargetOutputs(*i, outs, depends);
+      this->AppendTargetOutputs(targetDep, outs, depends);
     }
     std::sort(outs.begin(), outs.end());
     outputs.insert(outputs.end(), outs.begin(), outs.end());
@@ -1050,37 +1043,51 @@ void cmGlobalNinjaGenerator::AppendTargetDepends(
 void cmGlobalNinjaGenerator::AppendTargetDependsClosure(
   cmGeneratorTarget const* target, cmNinjaDeps& outputs)
 {
-  TargetDependsClosureMap::iterator i =
-    this->TargetDependsClosures.find(target);
-  if (i == this->TargetDependsClosures.end()) {
-    TargetDependsClosureMap::value_type e(
-      target, std::set<cmGeneratorTarget const*>());
-    i = this->TargetDependsClosures.insert(e).first;
-    this->ComputeTargetDependsClosure(target, i->second);
-  }
-  std::set<cmGeneratorTarget const*> const& targets = i->second;
-  cmNinjaDeps outs;
-  for (std::set<cmGeneratorTarget const*>::const_iterator ti = targets.begin();
-       ti != targets.end(); ++ti) {
-    this->AppendTargetOutputs(*ti, outs);
-  }
-  std::sort(outs.begin(), outs.end());
+  cmNinjaOuts outs;
+  this->AppendTargetDependsClosure(target, outs, true);
+
   outputs.insert(outputs.end(), outs.begin(), outs.end());
 }
 
-void cmGlobalNinjaGenerator::ComputeTargetDependsClosure(
-  cmGeneratorTarget const* target, std::set<cmGeneratorTarget const*>& depends)
+void cmGlobalNinjaGenerator::AppendTargetDependsClosure(
+  cmGeneratorTarget const* target, cmNinjaOuts& outputs, bool omit_self)
 {
-  cmTargetDependSet const& targetDeps = this->GetTargetDirectDepends(target);
-  for (cmTargetDependSet::const_iterator i = targetDeps.begin();
-       i != targetDeps.end(); ++i) {
-    if ((*i)->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
-      continue;
-    }
-    if (depends.insert(*i).second) {
-      this->ComputeTargetDependsClosure(*i, depends);
+
+  // try to locate the target in the cache
+  auto find = this->TargetDependsClosures.lower_bound(target);
+
+  if (find == this->TargetDependsClosures.end() || find->first != target) {
+    // We now calculate the closure outputs by inspecting the dependent
+    // targets recursively.
+    // For that we have to distinguish between a local result set that is only
+    // relevant for filling the cache entries properly isolated and a global
+    // result set that is relevant for the result of the top level call to
+    // AppendTargetDependsClosure.
+    auto const& targetDeps = this->GetTargetDirectDepends(target);
+    cmNinjaOuts this_outs; // this will be the new cache entry
+
+    for (auto const& dep_target : targetDeps) {
+      if (dep_target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+        continue;
+      }
+
+      // Collect the dependent targets for _this_ target
+      this->AppendTargetDependsClosure(dep_target, this_outs, false);
     }
+    find = this->TargetDependsClosures.emplace_hint(find, target,
+                                                    std::move(this_outs));
   }
+
+  // now fill the outputs of the final result from the newly generated cache
+  // entry
+  outputs.insert(find->second.begin(), find->second.end());
+
+  // finally generate the outputs of the target itself, if applicable
+  cmNinjaDeps outs;
+  if (!omit_self) {
+    this->AppendTargetOutputs(target, outs);
+  }
+  outputs.insert(outs.begin(), outs.end());
 }
 
 void cmGlobalNinjaGenerator::AddTargetAlias(const std::string& alias,
@@ -1091,8 +1098,8 @@ void cmGlobalNinjaGenerator::AddTargetAlias(const std::string& alias,
   this->AppendTargetOutputs(target, outputs);
   // Mark the target's outputs as ambiguous to ensure that no other target uses
   // the output as an alias.
-  for (cmNinjaDeps::iterator i = outputs.begin(); i != outputs.end(); ++i) {
-    TargetAliases[*i] = CM_NULLPTR;
+  for (std::string const& output : outputs) {
+    TargetAliases[output] = nullptr;
   }
 
   // Insert the alias into the map.  If the alias was already present in the
@@ -1100,7 +1107,7 @@ void cmGlobalNinjaGenerator::AddTargetAlias(const std::string& alias,
   std::pair<TargetAliasMap::iterator, bool> newAlias =
     TargetAliases.insert(std::make_pair(buildAlias, target));
   if (newAlias.second && newAlias.first->second != target) {
-    newAlias.first->second = CM_NULLPTR;
+    newAlias.first->second = nullptr;
   }
 }
 
@@ -1109,17 +1116,16 @@ void cmGlobalNinjaGenerator::WriteTargetAliases(std::ostream& os)
   cmGlobalNinjaGenerator::WriteDivider(os);
   os << "# Target aliases.\n\n";
 
-  for (TargetAliasMap::const_iterator i = TargetAliases.begin();
-       i != TargetAliases.end(); ++i) {
+  for (auto const& ta : TargetAliases) {
     // Don't write ambiguous aliases.
-    if (!i->second) {
+    if (!ta.second) {
       continue;
     }
 
     cmNinjaDeps deps;
-    this->AppendTargetOutputs(i->second, deps);
+    this->AppendTargetOutputs(ta.second, deps);
 
-    this->WritePhonyBuild(os, "", cmNinjaDeps(1, i->first), deps);
+    this->WritePhonyBuild(os, "", cmNinjaDeps(1, ta.first), deps);
   }
 }
 
@@ -1129,19 +1135,13 @@ void cmGlobalNinjaGenerator::WriteFolderTargets(std::ostream& os)
   os << "# Folder targets.\n\n";
 
   std::map<std::string, cmNinjaDeps> targetsPerFolder;
-  for (std::vector<cmLocalGenerator*>::const_iterator lgi =
-         this->LocalGenerators.begin();
-       lgi != this->LocalGenerators.end(); ++lgi) {
-    cmLocalGenerator const* lg = *lgi;
+  for (cmLocalGenerator const* lg : this->LocalGenerators) {
     const std::string currentBinaryFolder(
       lg->GetStateSnapshot().GetDirectory().GetCurrentBinary());
     // The directory-level rule should depend on the target-level rules
     // for all targets in the directory.
     targetsPerFolder[currentBinaryFolder] = cmNinjaDeps();
-    for (std::vector<cmGeneratorTarget*>::const_iterator ti =
-           lg->GetGeneratorTargets().begin();
-         ti != lg->GetGeneratorTargets().end(); ++ti) {
-      cmGeneratorTarget const* gt = *ti;
+    for (auto gt : lg->GetGeneratorTargets()) {
       cmStateEnums::TargetType const type = gt->GetType();
       if ((type == cmStateEnums::EXECUTABLE ||
            type == cmStateEnums::STATIC_LIBRARY ||
@@ -1158,11 +1158,9 @@ void cmGlobalNinjaGenerator::WriteFolderTargets(std::ostream& os)
     // rules of the subdirectories.
     std::vector<cmStateSnapshot> const& children =
       lg->GetStateSnapshot().GetChildren();
-    for (std::vector<cmStateSnapshot>::const_iterator stateIt =
-           children.begin();
-         stateIt != children.end(); ++stateIt) {
+    for (cmStateSnapshot const& state : children) {
       std::string const currentBinaryDir =
-        stateIt->GetDirectory().GetCurrentBinary();
+        state.GetDirectory().GetCurrentBinary();
 
       targetsPerFolder[currentBinaryFolder].push_back(
         this->ConvertToNinjaPath(currentBinaryDir + "/all"));
@@ -1171,11 +1169,9 @@ void cmGlobalNinjaGenerator::WriteFolderTargets(std::ostream& os)
 
   std::string const rootBinaryDir =
     this->LocalGenerators[0]->GetBinaryDirectory();
-  for (std::map<std::string, cmNinjaDeps>::const_iterator it =
-         targetsPerFolder.begin();
-       it != targetsPerFolder.end(); ++it) {
+  for (auto const& it : targetsPerFolder) {
     cmGlobalNinjaGenerator::WriteDivider(os);
-    std::string const& currentBinaryDir = it->first;
+    std::string const& currentBinaryDir = it.first;
 
     // Do not generate a rule for the root binary dir.
     if (rootBinaryDir.length() >= currentBinaryDir.length()) {
@@ -1186,7 +1182,7 @@ void cmGlobalNinjaGenerator::WriteFolderTargets(std::ostream& os)
     cmNinjaDeps output(1);
     output.push_back(this->ConvertToNinjaPath(currentBinaryDir + "/all"));
 
-    this->WritePhonyBuild(os, comment, output, it->second);
+    this->WritePhonyBuild(os, comment, output, it.second);
   }
 }
 
@@ -1220,50 +1216,40 @@ void cmGlobalNinjaGenerator::WriteUnknownExplicitDependencies(std::ostream& os)
   // get the list of files that cmake itself has generated as a
   // product of configuration.
 
-  for (std::vector<cmLocalGenerator*>::const_iterator i =
-         this->LocalGenerators.begin();
-       i != this->LocalGenerators.end(); ++i) {
+  for (cmLocalGenerator* lg : this->LocalGenerators) {
     // get the vector of files created by this makefile and convert them
     // to ninja paths, which are all relative in respect to the build directory
     const std::vector<std::string>& files =
-      (*i)->GetMakefile()->GetOutputFiles();
-    typedef std::vector<std::string>::const_iterator vect_it;
-    for (vect_it j = files.begin(); j != files.end(); ++j) {
-      knownDependencies.insert(this->ConvertToNinjaPath(*j));
+      lg->GetMakefile()->GetOutputFiles();
+    for (std::string const& file : files) {
+      knownDependencies.insert(this->ConvertToNinjaPath(file));
     }
     // get list files which are implicit dependencies as well and will be phony
     // for rebuild manifest
-    std::vector<std::string> const& lf = (*i)->GetMakefile()->GetListFiles();
-    typedef std::vector<std::string>::const_iterator vect_it;
-    for (vect_it j = lf.begin(); j != lf.end(); ++j) {
-      knownDependencies.insert(this->ConvertToNinjaPath(*j));
+    std::vector<std::string> const& lf = lg->GetMakefile()->GetListFiles();
+    for (std::string const& j : lf) {
+      knownDependencies.insert(this->ConvertToNinjaPath(j));
     }
     std::vector<cmGeneratorExpressionEvaluationFile*> const& ef =
-      (*i)->GetMakefile()->GetEvaluationFiles();
-    for (std::vector<cmGeneratorExpressionEvaluationFile*>::const_iterator li =
-           ef.begin();
-         li != ef.end(); ++li) {
+      lg->GetMakefile()->GetEvaluationFiles();
+    for (cmGeneratorExpressionEvaluationFile* li : ef) {
       // get all the files created by generator expressions and convert them
       // to ninja paths
-      std::vector<std::string> evaluationFiles = (*li)->GetFiles();
-      for (vect_it j = evaluationFiles.begin(); j != evaluationFiles.end();
-           ++j) {
-        knownDependencies.insert(this->ConvertToNinjaPath(*j));
+      std::vector<std::string> evaluationFiles = li->GetFiles();
+      for (std::string const& evaluationFile : evaluationFiles) {
+        knownDependencies.insert(this->ConvertToNinjaPath(evaluationFile));
       }
     }
   }
   knownDependencies.insert(this->CMakeCacheFile);
 
-  for (TargetAliasMap::const_iterator i = this->TargetAliases.begin();
-       i != this->TargetAliases.end(); ++i) {
-    knownDependencies.insert(this->ConvertToNinjaPath(i->first));
+  for (auto const& ta : this->TargetAliases) {
+    knownDependencies.insert(this->ConvertToNinjaPath(ta.first));
   }
 
   // remove all source files we know will exist.
-  typedef std::map<std::string, std::set<std::string> >::const_iterator map_it;
-  for (map_it i = this->AssumedSourceDependencies.begin();
-       i != this->AssumedSourceDependencies.end(); ++i) {
-    knownDependencies.insert(this->ConvertToNinjaPath(i->first));
+  for (auto const& i : this->AssumedSourceDependencies) {
+    knownDependencies.insert(this->ConvertToNinjaPath(i.first));
   }
 
   // now we difference with CombinedCustomCommandExplicitDependencies to find
@@ -1285,20 +1271,18 @@ void cmGlobalNinjaGenerator::WriteUnknownExplicitDependencies(std::ostream& os)
   bool const inSourceBuild =
     (rootBuildDirectory == this->GetCMakeInstance()->GetHomeDirectory());
   std::vector<std::string> warnExplicitDepends;
-  for (std::vector<std::string>::const_iterator i =
-         unknownExplicitDepends.begin();
-       i != unknownExplicitDepends.end(); ++i) {
+  for (std::string const& i : unknownExplicitDepends) {
     // verify the file is in the build directory
     std::string const absDepPath =
-      cmSystemTools::CollapseFullPath(*i, rootBuildDirectory.c_str());
+      cmSystemTools::CollapseFullPath(i, rootBuildDirectory.c_str());
     bool const inBuildDir =
       cmSystemTools::IsSubDirectory(absDepPath, rootBuildDirectory);
     if (inBuildDir) {
-      cmNinjaDeps deps(1, *i);
+      cmNinjaDeps deps(1, i);
       this->WritePhonyBuild(os, "", deps, cmNinjaDeps());
       if (this->PolicyCMP0058 == cmPolicies::WARN && !inSourceBuild &&
           warnExplicitDepends.size() < 10) {
-        warnExplicitDepends.push_back(*i);
+        warnExplicitDepends.push_back(i);
       }
     }
   }
@@ -1373,13 +1357,11 @@ void cmGlobalNinjaGenerator::WriteTargetRebuildManifest(std::ostream& os)
             /*generator=*/true);
 
   cmNinjaDeps implicitDeps;
-  for (std::vector<cmLocalGenerator*>::const_iterator i =
-         this->LocalGenerators.begin();
-       i != this->LocalGenerators.end(); ++i) {
-    std::vector<std::string> const& lf = (*i)->GetMakefile()->GetListFiles();
-    for (std::vector<std::string>::const_iterator fi = lf.begin();
-         fi != lf.end(); ++fi) {
-      implicitDeps.push_back(this->ConvertToNinjaPath(*fi));
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
+    std::vector<std::string> const& lf =
+      localGen->GetMakefile()->GetListFiles();
+    for (std::string const& fi : lf) {
+      implicitDeps.push_back(this->ConvertToNinjaPath(fi));
     }
   }
   implicitDeps.push_back(this->CMakeCacheFile);
@@ -1636,9 +1618,8 @@ int cmcmd_cmake_ninja_depends(std::vector<std::string>::const_iterator argBeg,
 
     Json::Value const& tdi_include_dirs = tdi["include-dirs"];
     if (tdi_include_dirs.isArray()) {
-      for (Json::Value::const_iterator i = tdi_include_dirs.begin();
-           i != tdi_include_dirs.end(); ++i) {
-        includes.push_back(i->asString());
+      for (auto const& tdi_include_dir : tdi_include_dirs) {
+        includes.push_back(tdi_include_dir.asString());
       }
     }
   }
@@ -1659,9 +1640,8 @@ int cmcmd_cmake_ninja_depends(std::vector<std::string>::const_iterator argBeg,
   {
     cmGeneratedFileStream depfile(arg_dep.c_str());
     depfile << cmSystemTools::ConvertToUnixOutputPath(arg_pp) << ":";
-    for (std::set<std::string>::iterator i = info.Includes.begin();
-         i != info.Includes.end(); ++i) {
-      depfile << " \\\n " << cmSystemTools::ConvertToUnixOutputPath(*i);
+    for (std::string const& include : info.Includes) {
+      depfile << " \\\n " << cmSystemTools::ConvertToUnixOutputPath(include);
     }
     depfile << "\n";
   }
@@ -1670,16 +1650,14 @@ int cmcmd_cmake_ninja_depends(std::vector<std::string>::const_iterator argBeg,
   ddi["object"] = arg_obj;
 
   Json::Value& ddi_provides = ddi["provides"] = Json::arrayValue;
-  for (std::set<std::string>::iterator i = info.Provides.begin();
-       i != info.Provides.end(); ++i) {
-    ddi_provides.append(*i);
+  for (std::string const& provide : info.Provides) {
+    ddi_provides.append(provide);
   }
   Json::Value& ddi_requires = ddi["requires"] = Json::arrayValue;
-  for (std::set<std::string>::iterator i = info.Requires.begin();
-       i != info.Requires.end(); ++i) {
+  for (std::string const& r : info.Requires) {
     // Require modules not provided in the same source.
-    if (!info.Provides.count(*i)) {
-      ddi_requires.append(*i);
+    if (!info.Provides.count(r)) {
+      ddi_requires.append(r);
     }
   }
 
@@ -1714,24 +1692,24 @@ bool cmGlobalNinjaGenerator::WriteDyndepFile(
     snapshot.GetDirectory().SetCurrentBinary(dir_cur_bld);
     snapshot.GetDirectory().SetRelativePathTopSource(dir_top_src.c_str());
     snapshot.GetDirectory().SetRelativePathTopBinary(dir_top_bld.c_str());
-    CM_AUTO_PTR<cmMakefile> mfd(new cmMakefile(this, snapshot));
-    CM_AUTO_PTR<cmLocalNinjaGenerator> lgd(static_cast<cmLocalNinjaGenerator*>(
-      this->CreateLocalGenerator(mfd.get())));
+    auto mfd = cm::make_unique<cmMakefile>(this, snapshot);
+    std::unique_ptr<cmLocalNinjaGenerator> lgd(
+      static_cast<cmLocalNinjaGenerator*>(
+        this->CreateLocalGenerator(mfd.get())));
     this->Makefiles.push_back(mfd.release());
     this->LocalGenerators.push_back(lgd.release());
   }
 
   std::vector<cmFortranObjectInfo> objects;
-  for (std::vector<std::string>::const_iterator ddii = arg_ddis.begin();
-       ddii != arg_ddis.end(); ++ddii) {
+  for (std::string const& arg_ddi : arg_ddis) {
     // Load the ddi file and compute the module file paths it provides.
     Json::Value ddio;
     Json::Value const& ddi = ddio;
-    cmsys::ifstream ddif(ddii->c_str(), std::ios::in | std::ios::binary);
+    cmsys::ifstream ddif(arg_ddi.c_str(), std::ios::in | std::ios::binary);
     Json::Reader reader;
     if (!reader.parse(ddif, ddio, false)) {
       cmSystemTools::Error("-E cmake_ninja_dyndep failed to parse ",
-                           ddii->c_str(),
+                           arg_ddi.c_str(),
                            reader.getFormattedErrorMessages().c_str());
       return false;
     }
@@ -1740,16 +1718,14 @@ bool cmGlobalNinjaGenerator::WriteDyndepFile(
     info.Object = ddi["object"].asString();
     Json::Value const& ddi_provides = ddi["provides"];
     if (ddi_provides.isArray()) {
-      for (Json::Value::const_iterator i = ddi_provides.begin();
-           i != ddi_provides.end(); ++i) {
-        info.Provides.push_back(i->asString());
+      for (auto const& ddi_provide : ddi_provides) {
+        info.Provides.push_back(ddi_provide.asString());
       }
     }
     Json::Value const& ddi_requires = ddi["requires"];
     if (ddi_requires.isArray()) {
-      for (Json::Value::const_iterator i = ddi_requires.begin();
-           i != ddi_requires.end(); ++i) {
-        info.Requires.push_back(i->asString());
+      for (auto const& ddi_require : ddi_requires) {
+        info.Requires.push_back(ddi_require.asString());
       }
     }
     objects.push_back(info);
@@ -1759,16 +1735,14 @@ bool cmGlobalNinjaGenerator::WriteDyndepFile(
   std::map<std::string, std::string> mod_files;
 
   // Populate the module map with those provided by linked targets first.
-  for (std::vector<std::string>::const_iterator di =
-         linked_target_dirs.begin();
-       di != linked_target_dirs.end(); ++di) {
-    std::string const ltmn = *di + "/FortranModules.json";
+  for (std::string const& linked_target_dir : linked_target_dirs) {
+    std::string const ltmn = linked_target_dir + "/FortranModules.json";
     Json::Value ltm;
     cmsys::ifstream ltmf(ltmn.c_str(), std::ios::in | std::ios::binary);
     Json::Reader reader;
     if (ltmf && !reader.parse(ltmf, ltm, false)) {
       cmSystemTools::Error("-E cmake_ninja_dyndep failed to parse ",
-                           di->c_str(),
+                           linked_target_dir.c_str(),
                            reader.getFormattedErrorMessages().c_str());
       return false;
     }
@@ -1783,21 +1757,18 @@ bool cmGlobalNinjaGenerator::WriteDyndepFile(
   // We do this after loading the modules provided by linked targets
   // in case we have one of the same name that must be preferred.
   Json::Value tm = Json::objectValue;
-  for (std::vector<cmFortranObjectInfo>::iterator oi = objects.begin();
-       oi != objects.end(); ++oi) {
-    for (std::vector<std::string>::iterator i = oi->Provides.begin();
-         i != oi->Provides.end(); ++i) {
-      std::string const mod = module_dir + *i + ".mod";
-      mod_files[*i] = mod;
-      tm[*i] = mod;
+  for (cmFortranObjectInfo const& object : objects) {
+    for (std::string const& p : object.Provides) {
+      std::string const mod = module_dir + p + ".mod";
+      mod_files[p] = mod;
+      tm[p] = mod;
     }
   }
 
   cmGeneratedFileStream ddf(arg_dd.c_str());
   ddf << "ninja_dyndep_version = 1.0\n";
 
-  for (std::vector<cmFortranObjectInfo>::iterator oi = objects.begin();
-       oi != objects.end(); ++oi) {
+  for (cmFortranObjectInfo const& object : objects) {
     std::string const ddComment;
     std::string const ddRule = "dyndep";
     cmNinjaDeps ddOutputs;
@@ -1807,19 +1778,17 @@ bool cmGlobalNinjaGenerator::WriteDyndepFile(
     cmNinjaDeps ddOrderOnlyDeps;
     cmNinjaVars ddVars;
 
-    ddOutputs.push_back(oi->Object);
-    for (std::vector<std::string>::iterator i = oi->Provides.begin();
-         i != oi->Provides.end(); ++i) {
-      ddImplicitOuts.push_back(this->ConvertToNinjaPath(mod_files[*i]));
+    ddOutputs.push_back(object.Object);
+    for (std::string const& p : object.Provides) {
+      ddImplicitOuts.push_back(this->ConvertToNinjaPath(mod_files[p]));
     }
-    for (std::vector<std::string>::iterator i = oi->Requires.begin();
-         i != oi->Requires.end(); ++i) {
-      std::map<std::string, std::string>::iterator m = mod_files.find(*i);
+    for (std::string const& r : object.Requires) {
+      std::map<std::string, std::string>::iterator m = mod_files.find(r);
       if (m != mod_files.end()) {
         ddImplicitDeps.push_back(this->ConvertToNinjaPath(m->second));
       }
     }
-    if (!oi->Provides.empty()) {
+    if (!object.Provides.empty()) {
       ddVars["restat"] = "1";
     }
 
@@ -1846,9 +1815,7 @@ int cmcmd_cmake_ninja_dyndep(std::vector<std::string>::const_iterator argBeg,
   std::string arg_dd;
   std::string arg_tdi;
   std::vector<std::string> arg_ddis;
-  for (std::vector<std::string>::const_iterator a = arg_full.begin();
-       a != arg_full.end(); ++a) {
-    std::string const& arg = *a;
+  for (std::string const& arg : arg_full) {
     if (cmHasLiteralPrefix(arg, "--tdi=")) {
       arg_tdi = arg.substr(6);
     } else if (cmHasLiteralPrefix(arg, "--dd=")) {
@@ -1895,16 +1862,15 @@ int cmcmd_cmake_ninja_dyndep(std::vector<std::string>::const_iterator argBeg,
   std::vector<std::string> linked_target_dirs;
   Json::Value const& tdi_linked_target_dirs = tdi["linked-target-dirs"];
   if (tdi_linked_target_dirs.isArray()) {
-    for (Json::Value::const_iterator i = tdi_linked_target_dirs.begin();
-         i != tdi_linked_target_dirs.end(); ++i) {
-      linked_target_dirs.push_back(i->asString());
+    for (auto const& tdi_linked_target_dir : tdi_linked_target_dirs) {
+      linked_target_dirs.push_back(tdi_linked_target_dir.asString());
     }
   }
 
   cmake cm(cmake::RoleInternal);
   cm.SetHomeDirectory(dir_top_src);
   cm.SetHomeOutputDirectory(dir_top_bld);
-  CM_AUTO_PTR<cmGlobalNinjaGenerator> ggd(
+  std::unique_ptr<cmGlobalNinjaGenerator> ggd(
     static_cast<cmGlobalNinjaGenerator*>(cm.CreateGlobalGenerator("Ninja")));
   if (!ggd.get() ||
       !ggd->WriteDyndepFile(dir_top_src, dir_top_bld, dir_cur_src, dir_cur_bld,
diff --git a/Source/cmGlobalNinjaGenerator.h b/Source/cmGlobalNinjaGenerator.h
index b0008f74a..7f80d0806 100644
--- a/Source/cmGlobalNinjaGenerator.h
+++ b/Source/cmGlobalNinjaGenerator.h
@@ -3,12 +3,13 @@
 #ifndef cmGlobalNinjaGenerator_h
 #define cmGlobalNinjaGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <map>
 #include <set>
 #include <string>
+#include <unordered_map>
 #include <utility>
 #include <vector>
 
@@ -78,7 +79,7 @@ public:
 
   cmLinkLineComputer* CreateLinkLineComputer(
     cmOutputConverter* outputConverter,
-    cmStateDirectory const& stateDir) const CM_OVERRIDE;
+    cmStateDirectory const& stateDir) const override;
 
   /**
    * Write the given @a comment to the output stream @a os. It
@@ -98,7 +99,7 @@ public:
    */
   static bool SupportsPlatform() { return false; }
 
-  bool IsIPOSupported() const CM_OVERRIDE { return true; }
+  bool IsIPOSupported() const override { return true; }
 
   /**
    * Write a build statement to @a os with the @a comment using
@@ -114,7 +115,7 @@ public:
                   const cmNinjaDeps& orderOnlyDeps,
                   const cmNinjaVars& variables,
                   const std::string& rspfile = std::string(),
-                  int cmdLineLimit = 0, bool* usedResponseFile = CM_NULLPTR);
+                  int cmdLineLimit = 0, bool* usedResponseFile = nullptr);
 
   /**
    * Helper to write a build statement with the special 'phony' rule.
@@ -183,11 +184,11 @@ public:
     return new cmGlobalGeneratorSimpleFactory<cmGlobalNinjaGenerator>();
   }
 
-  ~cmGlobalNinjaGenerator() CM_OVERRIDE {}
+  ~cmGlobalNinjaGenerator() override {}
 
-  cmLocalGenerator* CreateLocalGenerator(cmMakefile* mf) CM_OVERRIDE;
+  cmLocalGenerator* CreateLocalGenerator(cmMakefile* mf) override;
 
-  std::string GetName() const CM_OVERRIDE
+  std::string GetName() const override
   {
     return cmGlobalNinjaGenerator::GetActualName();
   }
@@ -195,12 +196,12 @@ public:
   static std::string GetActualName() { return "Ninja"; }
 
   /** Get encoding used by generator for ninja files */
-  codecvt::Encoding GetMakefileEncoding() const CM_OVERRIDE;
+  codecvt::Encoding GetMakefileEncoding() const override;
 
   static void GetDocumentation(cmDocumentationEntry& entry);
 
   void EnableLanguage(std::vector<std::string> const& languages,
-                      cmMakefile* mf, bool optional) CM_OVERRIDE;
+                      cmMakefile* mf, bool optional) override;
 
   void GenerateBuildCommand(std::vector<std::string>& makeCommand,
                             const std::string& makeProgram,
@@ -209,34 +210,31 @@ public:
                             const std::string& targetName,
                             const std::string& config, bool fast, bool verbose,
                             std::vector<std::string> const& makeOptions =
-                              std::vector<std::string>()) CM_OVERRIDE;
+                              std::vector<std::string>()) override;
 
   // Setup target names
-  const char* GetAllTargetName() const CM_OVERRIDE { return "all"; }
-  const char* GetInstallTargetName() const CM_OVERRIDE { return "install"; }
-  const char* GetInstallLocalTargetName() const CM_OVERRIDE
+  const char* GetAllTargetName() const override { return "all"; }
+  const char* GetInstallTargetName() const override { return "install"; }
+  const char* GetInstallLocalTargetName() const override
   {
     return "install/local";
   }
-  const char* GetInstallStripTargetName() const CM_OVERRIDE
+  const char* GetInstallStripTargetName() const override
   {
     return "install/strip";
   }
-  const char* GetTestTargetName() const CM_OVERRIDE { return "test"; }
-  const char* GetPackageTargetName() const CM_OVERRIDE { return "package"; }
-  const char* GetPackageSourceTargetName() const CM_OVERRIDE
+  const char* GetTestTargetName() const override { return "test"; }
+  const char* GetPackageTargetName() const override { return "package"; }
+  const char* GetPackageSourceTargetName() const override
   {
     return "package_source";
   }
-  const char* GetEditCacheTargetName() const CM_OVERRIDE
-  {
-    return "edit_cache";
-  }
-  const char* GetRebuildCacheTargetName() const CM_OVERRIDE
+  const char* GetEditCacheTargetName() const override { return "edit_cache"; }
+  const char* GetRebuildCacheTargetName() const override
   {
     return "rebuild_cache";
   }
-  const char* GetCleanTargetName() const CM_OVERRIDE { return "clean"; }
+  const char* GetCleanTargetName() const override { return "clean"; }
 
   cmGeneratedFileStream* GetBuildFileStream() const
   {
@@ -248,7 +246,7 @@ public:
     return this->RulesFileStream;
   }
 
-  std::string ConvertToNinjaPath(const std::string& path) const;
+  std::string const& ConvertToNinjaPath(const std::string& path) const;
 
   struct MapToNinjaPathImpl
   {
@@ -323,6 +321,8 @@ public:
     cmNinjaTargetDepends depends = DependOnTargetArtifact);
   void AppendTargetDependsClosure(cmGeneratorTarget const* target,
                                   cmNinjaDeps& outputs);
+  void AppendTargetDependsClosure(cmGeneratorTarget const* target,
+                                  cmNinjaOuts& outputs, bool omit_self);
   void AddDependencyToAll(cmGeneratorTarget* target);
   void AddDependencyToAll(const std::string& input);
 
@@ -340,7 +340,7 @@ public:
 
   void AddTargetAlias(const std::string& alias, cmGeneratorTarget* target);
 
-  void ComputeTargetObjectDirectory(cmGeneratorTarget* gt) const CM_OVERRIDE;
+  void ComputeTargetObjectDirectory(cmGeneratorTarget* gt) const override;
 
   // Ninja generator uses 'deps' and 'msvc_deps_prefix' introduced in 1.3
   static std::string RequiredNinjaVersion() { return "1.3"; }
@@ -363,16 +363,16 @@ public:
                        std::vector<std::string> const& linked_target_dirs);
 
 protected:
-  void Generate() CM_OVERRIDE;
+  void Generate() override;
 
-  bool CheckALLOW_DUPLICATE_CUSTOM_TARGETS() const CM_OVERRIDE { return true; }
+  bool CheckALLOW_DUPLICATE_CUSTOM_TARGETS() const override { return true; }
 
 private:
-  std::string GetEditCacheCommand() const CM_OVERRIDE;
-  bool FindMakeProgram(cmMakefile* mf) CM_OVERRIDE;
+  std::string GetEditCacheCommand() const override;
+  bool FindMakeProgram(cmMakefile* mf) override;
   void CheckNinjaFeatures();
   bool CheckLanguages(std::vector<std::string> const& languages,
-                      cmMakefile* mf) const CM_OVERRIDE;
+                      cmMakefile* mf) const override;
   bool CheckFortran(cmMakefile* mf) const;
 
   void OpenBuildFileStream();
@@ -446,15 +446,15 @@ private:
   std::set<std::string> CombinedBuildOutputs;
 
   /// The mapping from source file to assumed dependencies.
-  std::map<std::string, std::set<std::string> > AssumedSourceDependencies;
+  std::map<std::string, std::set<std::string>> AssumedSourceDependencies;
 
   typedef std::map<std::string, cmGeneratorTarget*> TargetAliasMap;
   TargetAliasMap TargetAliases;
 
-  typedef std::map<cmGeneratorTarget const*,
-                   std::set<cmGeneratorTarget const*> >
-    TargetDependsClosureMap;
-  TargetDependsClosureMap TargetDependsClosures;
+  std::map<cmGeneratorTarget const*, cmNinjaOuts> TargetDependsClosures;
+
+  /// the local cache for calls to ConvertToNinjaPath
+  mutable std::unordered_map<std::string, std::string> ConvertToNinjaPathCache;
 
   std::string NinjaCommand;
   std::string NinjaVersion;
diff --git a/Source/cmGlobalUnixMakefileGenerator3.cxx b/Source/cmGlobalUnixMakefileGenerator3.cxx
index 23b3718dc..be4012680 100644
--- a/Source/cmGlobalUnixMakefileGenerator3.cxx
+++ b/Source/cmGlobalUnixMakefileGenerator3.cxx
@@ -38,7 +38,7 @@ cmGlobalUnixMakefileGenerator3::cmGlobalUnixMakefileGenerator3(cmake* cm)
 #else
   this->UseLinkScript = true;
 #endif
-  this->CommandDatabase = CM_NULLPTR;
+  this->CommandDatabase = nullptr;
 
   this->IncludeDirective = "include";
   this->DefineWindowsNULL = false;
@@ -50,12 +50,11 @@ void cmGlobalUnixMakefileGenerator3::EnableLanguage(
   std::vector<std::string> const& languages, cmMakefile* mf, bool optional)
 {
   this->cmGlobalGenerator::EnableLanguage(languages, mf, optional);
-  for (std::vector<std::string>::const_iterator l = languages.begin();
-       l != languages.end(); ++l) {
-    if (*l == "NONE") {
+  for (std::string const& language : languages) {
+    if (language == "NONE") {
       continue;
     }
-    this->ResolveLanguageCompiler(*l, mf, optional);
+    this->ResolveLanguageCompiler(language, mf, optional);
   }
 }
 
@@ -130,9 +129,8 @@ void cmGlobalUnixMakefileGenerator3::Generate()
 
   // initialize progress
   unsigned long total = 0;
-  for (ProgressMapType::const_iterator pmi = this->ProgressMap.begin();
-       pmi != this->ProgressMap.end(); ++pmi) {
-    total += pmi->second.NumberOfActions;
+  for (auto const& pmi : this->ProgressMap) {
+    total += pmi.second.NumberOfActions;
   }
 
   // write each target's progress.make this loop is done twice. Bascially the
@@ -143,12 +141,10 @@ void cmGlobalUnixMakefileGenerator3::Generate()
   // well. This is because the all targets require more information that is
   // computed in the first loop.
   unsigned long current = 0;
-  for (ProgressMapType::iterator pmi = this->ProgressMap.begin();
-       pmi != this->ProgressMap.end(); ++pmi) {
-    pmi->second.WriteProgressVariables(total, current);
+  for (auto& pmi : this->ProgressMap) {
+    pmi.second.WriteProgressVariables(total, current);
   }
-  for (unsigned int i = 0; i < this->LocalGenerators.size(); ++i) {
-    cmLocalGenerator* lg = this->LocalGenerators[i];
+  for (cmLocalGenerator* lg : this->LocalGenerators) {
     std::string markFileName = lg->GetCurrentBinaryDirectory();
     markFileName += "/";
     markFileName += cmake::GetCMakeFilesDirectory();
@@ -161,10 +157,10 @@ void cmGlobalUnixMakefileGenerator3::Generate()
   this->WriteMainMakefile2();
   this->WriteMainCMakefile();
 
-  if (this->CommandDatabase != CM_NULLPTR) {
+  if (this->CommandDatabase != nullptr) {
     *this->CommandDatabase << std::endl << "]";
     delete this->CommandDatabase;
-    this->CommandDatabase = CM_NULLPTR;
+    this->CommandDatabase = nullptr;
   }
 }
 
@@ -172,7 +168,7 @@ void cmGlobalUnixMakefileGenerator3::AddCXXCompileCommand(
   const std::string& sourceFile, const std::string& workingDirectory,
   const std::string& compileCommand)
 {
-  if (this->CommandDatabase == CM_NULLPTR) {
+  if (this->CommandDatabase == nullptr) {
     std::string commandDatabaseName =
       std::string(this->GetCMakeInstance()->GetHomeOutputDirectory()) +
       "/compile_commands.json";
@@ -234,7 +230,7 @@ void cmGlobalUnixMakefileGenerator3::WriteMainMakefile2()
 
   // The all and preinstall rules might never have any dependencies
   // added to them.
-  if (this->EmptyRuleHackDepends != "") {
+  if (!this->EmptyRuleHackDepends.empty()) {
     depends.push_back(this->EmptyRuleHackDepends);
   }
 
@@ -250,9 +246,8 @@ void cmGlobalUnixMakefileGenerator3::WriteMainMakefile2()
   lg->WriteSpecialTargetsTop(makefileStream);
 
   // write the target convenience rules
-  unsigned int i;
-  for (i = 0; i < this->LocalGenerators.size(); ++i) {
-    lg = static_cast<cmLocalUnixMakefileGenerator3*>(this->LocalGenerators[i]);
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
+    lg = static_cast<cmLocalUnixMakefileGenerator3*>(localGen);
     this->WriteConvenienceRules2(makefileStream, lg);
   }
 
@@ -292,8 +287,8 @@ void cmGlobalUnixMakefileGenerator3::WriteMainCMakefile()
 
   // for each cmMakefile get its list of dependencies
   std::vector<std::string> lfiles;
-  for (unsigned int i = 0; i < this->LocalGenerators.size(); ++i) {
-    lg = static_cast<cmLocalUnixMakefileGenerator3*>(this->LocalGenerators[i]);
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
+    lg = static_cast<cmLocalUnixMakefileGenerator3*>(localGen);
 
     // Get the list of files contributing to this generation step.
     lfiles.insert(lfiles.end(), lg->GetMakefile()->GetListFiles().begin(),
@@ -316,9 +311,8 @@ void cmGlobalUnixMakefileGenerator3::WriteMainCMakefile()
     << "# The top level Makefile was generated from the following files:\n"
     << "set(CMAKE_MAKEFILE_DEPENDS\n"
     << "  \"CMakeCache.txt\"\n";
-  for (std::vector<std::string>::const_iterator i = lfiles.begin();
-       i != lfiles.end(); ++i) {
-    cmakefileStream << "  \"" << lg->ConvertToRelativePath(currentBinDir, *i)
+  for (std::string const& f : lfiles) {
+    cmakefileStream << "  \"" << lg->ConvertToRelativePath(currentBinDir, f)
                     << "\"\n";
   }
   cmakefileStream << "  )\n\n";
@@ -346,17 +340,15 @@ void cmGlobalUnixMakefileGenerator3::WriteMainCMakefile()
                     << "set(CMAKE_MAKEFILE_PRODUCTS\n";
     const std::vector<std::string>& outfiles =
       lg->GetMakefile()->GetOutputFiles();
-    for (std::vector<std::string>::const_iterator k = outfiles.begin();
-         k != outfiles.end(); ++k) {
-      cmakefileStream << "  \"" << lg->ConvertToRelativePath(binDir, *k)
+    for (std::string const& outfile : outfiles) {
+      cmakefileStream << "  \"" << lg->ConvertToRelativePath(binDir, outfile)
                       << "\"\n";
     }
 
     // add in all the directory information files
     std::string tmpStr;
-    for (unsigned int i = 0; i < this->LocalGenerators.size(); ++i) {
-      lg =
-        static_cast<cmLocalUnixMakefileGenerator3*>(this->LocalGenerators[i]);
+    for (cmLocalGenerator* localGen : this->LocalGenerators) {
+      lg = static_cast<cmLocalUnixMakefileGenerator3*>(localGen);
       tmpStr = lg->GetCurrentBinaryDirectory();
       tmpStr += cmake::GetCMakeFilesDirectory();
       tmpStr += "/CMakeDirectoryInformation.cmake";
@@ -379,19 +371,18 @@ void cmGlobalUnixMakefileGenerator3::WriteMainCMakefileLanguageRules(
   // now list all the target info files
   cmakefileStream << "# Dependency information for all targets:\n";
   cmakefileStream << "set(CMAKE_DEPEND_INFO_FILES\n";
-  for (unsigned int i = 0; i < lGenerators.size(); ++i) {
-    lg = static_cast<cmLocalUnixMakefileGenerator3*>(lGenerators[i]);
+  for (cmLocalGenerator* lGenerator : lGenerators) {
+    lg = static_cast<cmLocalUnixMakefileGenerator3*>(lGenerator);
     // for all of out targets
-    std::vector<cmGeneratorTarget*> tgts = lg->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::iterator l = tgts.begin();
-         l != tgts.end(); l++) {
-      if (((*l)->GetType() == cmStateEnums::EXECUTABLE) ||
-          ((*l)->GetType() == cmStateEnums::STATIC_LIBRARY) ||
-          ((*l)->GetType() == cmStateEnums::SHARED_LIBRARY) ||
-          ((*l)->GetType() == cmStateEnums::MODULE_LIBRARY) ||
-          ((*l)->GetType() == cmStateEnums::OBJECT_LIBRARY) ||
-          ((*l)->GetType() == cmStateEnums::UTILITY)) {
-        cmGeneratorTarget* gt = *l;
+    const std::vector<cmGeneratorTarget*>& tgts = lg->GetGeneratorTargets();
+    for (cmGeneratorTarget* tgt : tgts) {
+      if ((tgt->GetType() == cmStateEnums::EXECUTABLE) ||
+          (tgt->GetType() == cmStateEnums::STATIC_LIBRARY) ||
+          (tgt->GetType() == cmStateEnums::SHARED_LIBRARY) ||
+          (tgt->GetType() == cmStateEnums::MODULE_LIBRARY) ||
+          (tgt->GetType() == cmStateEnums::OBJECT_LIBRARY) ||
+          (tgt->GetType() == cmStateEnums::UTILITY)) {
+        cmGeneratorTarget* gt = tgt;
         std::string tname = lg->GetRelativeTargetDirectory(gt);
         tname += "/DependInfo.cmake";
         cmSystemTools::ConvertToUnixSlashes(tname);
@@ -414,10 +405,8 @@ void cmGlobalUnixMakefileGenerator3::WriteDirectoryRule2(
   // The directory-level rule should depend on the target-level rules
   // for all targets in the directory.
   std::vector<std::string> depends;
-  std::vector<cmGeneratorTarget*> targets = lg->GetGeneratorTargets();
-  for (std::vector<cmGeneratorTarget*>::iterator l = targets.begin();
-       l != targets.end(); ++l) {
-    cmGeneratorTarget* gtarget = *l;
+  const std::vector<cmGeneratorTarget*>& targets = lg->GetGeneratorTargets();
+  for (cmGeneratorTarget* gtarget : targets) {
     int type = gtarget->GetType();
     if ((type == cmStateEnums::EXECUTABLE) ||
         (type == cmStateEnums::STATIC_LIBRARY) ||
@@ -440,9 +429,8 @@ void cmGlobalUnixMakefileGenerator3::WriteDirectoryRule2(
   // The directory-level rule should depend on the directory-level
   // rules of the subdirectories.
   std::vector<cmStateSnapshot> children = lg->GetStateSnapshot().GetChildren();
-  for (std::vector<cmStateSnapshot>::const_iterator ci = children.begin();
-       ci != children.end(); ++ci) {
-    std::string subdir = ci->GetDirectory().GetCurrentBinary();
+  for (cmStateSnapshot const& c : children) {
+    std::string subdir = c.GetDirectory().GetCurrentBinary();
     subdir += "/";
     subdir += pass;
     depends.push_back(subdir);
@@ -450,7 +438,7 @@ void cmGlobalUnixMakefileGenerator3::WriteDirectoryRule2(
 
   // Work-around for makes that drop rules that have no dependencies
   // or commands.
-  if (depends.empty() && this->EmptyRuleHackDepends != "") {
+  if (depends.empty() && !this->EmptyRuleHackDepends.empty()) {
     depends.push_back(this->EmptyRuleHackDepends);
   }
 
@@ -542,15 +530,12 @@ void cmGlobalUnixMakefileGenerator3::WriteConvenienceRules(
   depends.push_back("cmake_check_build_system");
 
   // write the target convenience rules
-  unsigned int i;
-  cmLocalUnixMakefileGenerator3* lg;
-  for (i = 0; i < this->LocalGenerators.size(); ++i) {
-    lg = static_cast<cmLocalUnixMakefileGenerator3*>(this->LocalGenerators[i]);
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
+    cmLocalUnixMakefileGenerator3* lg =
+      static_cast<cmLocalUnixMakefileGenerator3*>(localGen);
     // for each target Generate the rule files for each target.
-    std::vector<cmGeneratorTarget*> targets = lg->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::iterator t = targets.begin();
-         t != targets.end(); ++t) {
-      cmGeneratorTarget* gtarget = *t;
+    const std::vector<cmGeneratorTarget*>& targets = lg->GetGeneratorTargets();
+    for (cmGeneratorTarget* gtarget : targets) {
       // Don't emit the same rule twice (e.g. two targets with the same
       // simple name)
       int type = gtarget->GetType();
@@ -629,10 +614,8 @@ void cmGlobalUnixMakefileGenerator3::WriteConvenienceRules2(
   depends.push_back("cmake_check_build_system");
 
   // for each target Generate the rule files for each target.
-  std::vector<cmGeneratorTarget*> targets = lg->GetGeneratorTargets();
-  for (std::vector<cmGeneratorTarget*>::iterator t = targets.begin();
-       t != targets.end(); ++t) {
-    cmGeneratorTarget* gtarget = *t;
+  const std::vector<cmGeneratorTarget*>& targets = lg->GetGeneratorTargets();
+  for (cmGeneratorTarget* gtarget : targets) {
     int type = gtarget->GetType();
     std::string name = gtarget->GetName();
     if (!name.empty() && ((type == cmStateEnums::EXECUTABLE) ||
@@ -680,11 +663,10 @@ void cmGlobalUnixMakefileGenerator3::WriteConvenienceRules2(
       {
         std::ostringstream progressArg;
         const char* sep = "";
-        std::vector<unsigned long>& progFiles =
+        std::vector<unsigned long> const& progFiles =
           this->ProgressMap[gtarget].Marks;
-        for (std::vector<unsigned long>::iterator i = progFiles.begin();
-             i != progFiles.end(); ++i) {
-          progressArg << sep << *i;
+        for (unsigned long progFile : progFiles) {
+          progressArg << sep << progFile;
           sep = ",";
         }
         progress.Arg = progressArg.str();
@@ -803,15 +785,9 @@ void cmGlobalUnixMakefileGenerator3::InitializeProgressMarks()
 {
   this->DirectoryTargetsMap.clear();
   // Loop over all targets in all local generators.
-  for (std::vector<cmLocalGenerator*>::const_iterator lgi =
-         this->LocalGenerators.begin();
-       lgi != this->LocalGenerators.end(); ++lgi) {
-    cmLocalGenerator* lg = *lgi;
-    std::vector<cmGeneratorTarget*> targets = lg->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::const_iterator t = targets.begin();
-         t != targets.end(); ++t) {
-      cmGeneratorTarget* gt = *t;
-
+  for (cmLocalGenerator* lg : this->LocalGenerators) {
+    const std::vector<cmGeneratorTarget*>& targets = lg->GetGeneratorTargets();
+    for (cmGeneratorTarget* gt : targets) {
       cmLocalGenerator* tlg = gt->GetLocalGenerator();
 
       if (gt->GetType() == cmStateEnums::INTERFACE_LIBRARY ||
@@ -835,9 +811,8 @@ void cmGlobalUnixMakefileGenerator3::InitializeProgressMarks()
         // target may still be included if it is a dependency of a
         // non-excluded target.
         TargetDependSet const& tgtdeps = this->GetTargetDirectDepends(gt);
-        for (TargetDependSet::const_iterator ti = tgtdeps.begin();
-             ti != tgtdeps.end(); ++ti) {
-          targetSet.insert(*ti);
+        for (cmTargetDepend const& tgtdep : tgtdeps) {
+          targetSet.insert(tgtdep);
         }
       }
     }
@@ -851,12 +826,11 @@ size_t cmGlobalUnixMakefileGenerator3::CountProgressMarksInTarget(
   if (emitted.insert(target).second) {
     count = this->ProgressMap[target].Marks.size();
     TargetDependSet const& depends = this->GetTargetDirectDepends(target);
-    for (TargetDependSet::const_iterator di = depends.begin();
-         di != depends.end(); ++di) {
-      if ((*di)->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+    for (cmTargetDepend const& depend : depends) {
+      if (depend->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
         continue;
       }
-      count += this->CountProgressMarksInTarget(*di, emitted);
+      count += this->CountProgressMarksInTarget(depend, emitted);
     }
   }
   return count;
@@ -869,9 +843,8 @@ size_t cmGlobalUnixMakefileGenerator3::CountProgressMarksInAll(
   std::set<cmGeneratorTarget const*> emitted;
   std::set<cmGeneratorTarget const*> const& targets =
     this->DirectoryTargetsMap[lg->GetStateSnapshot()];
-  for (std::set<cmGeneratorTarget const*>::const_iterator t = targets.begin();
-       t != targets.end(); ++t) {
-    count += this->CountProgressMarksInTarget(*t, emitted);
+  for (cmGeneratorTarget const* target : targets) {
+    count += this->CountProgressMarksInTarget(target, emitted);
   }
   return count;
 }
@@ -910,10 +883,9 @@ void cmGlobalUnixMakefileGenerator3::AppendGlobalTargetDepends(
   std::vector<std::string>& depends, cmGeneratorTarget* target)
 {
   TargetDependSet const& depends_set = this->GetTargetDirectDepends(target);
-  for (TargetDependSet::const_iterator i = depends_set.begin();
-       i != depends_set.end(); ++i) {
+  for (cmTargetDepend const& i : depends_set) {
     // Create the target-level dependency.
-    cmGeneratorTarget const* dep = *i;
+    cmGeneratorTarget const* dep = i;
     if (dep->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
     }
@@ -943,19 +915,16 @@ void cmGlobalUnixMakefileGenerator3::WriteHelpRule(
   std::set<std::string> emittedTargets;
 
   // for each local generator
-  unsigned int i;
-  cmLocalUnixMakefileGenerator3* lg2;
-  for (i = 0; i < this->LocalGenerators.size(); ++i) {
-    lg2 =
-      static_cast<cmLocalUnixMakefileGenerator3*>(this->LocalGenerators[i]);
+  for (cmLocalGenerator* localGen : this->LocalGenerators) {
+    cmLocalUnixMakefileGenerator3* lg2 =
+      static_cast<cmLocalUnixMakefileGenerator3*>(localGen);
     // for the passed in makefile or if this is the top Makefile wripte out
     // the targets
     if (lg2 == lg || lg->IsRootMakefile()) {
       // for each target Generate the rule files for each target.
-      std::vector<cmGeneratorTarget*> targets = lg2->GetGeneratorTargets();
-      for (std::vector<cmGeneratorTarget*>::iterator t = targets.begin();
-           t != targets.end(); ++t) {
-        cmGeneratorTarget* target = *t;
+      const std::vector<cmGeneratorTarget*>& targets =
+        lg2->GetGeneratorTargets();
+      for (cmGeneratorTarget* target : targets) {
         cmStateEnums::TargetType type = target->GetType();
         if ((type == cmStateEnums::EXECUTABLE) ||
             (type == cmStateEnums::STATIC_LIBRARY) ||
@@ -974,11 +943,9 @@ void cmGlobalUnixMakefileGenerator3::WriteHelpRule(
       }
     }
   }
-  std::vector<std::string> const& localHelp = lg->GetLocalHelp();
-  for (std::vector<std::string>::const_iterator o = localHelp.begin();
-       o != localHelp.end(); ++o) {
+  for (std::string const& o : lg->GetLocalHelp()) {
     path = "... ";
-    path += *o;
+    path += o;
     lg->AppendEcho(commands, path);
   }
   lg->WriteMakeRule(ruleFileStream, "Help Target", "help", no_depends,
@@ -993,10 +960,9 @@ bool cmGlobalUnixMakefileGenerator3::NeedRequiresStep(
   target->GetLanguages(
     languages,
     target->Target->GetMakefile()->GetSafeDefinition("CMAKE_BUILD_TYPE"));
-  for (std::set<std::string>::const_iterator l = languages.begin();
-       l != languages.end(); ++l) {
+  for (std::string const& l : languages) {
     std::string var = "CMAKE_NEEDS_REQUIRES_STEP_";
-    var += *l;
+    var += l;
     var += "_FLAG";
     if (target->Target->GetMakefile()->GetDefinition(var)) {
       return true;
diff --git a/Source/cmGlobalUnixMakefileGenerator3.h b/Source/cmGlobalUnixMakefileGenerator3.h
index a656102fb..d601f8845 100644
--- a/Source/cmGlobalUnixMakefileGenerator3.h
+++ b/Source/cmGlobalUnixMakefileGenerator3.h
@@ -3,7 +3,7 @@
 #ifndef cmGlobalUnixMakefileGenerator3_h
 #define cmGlobalUnixMakefileGenerator3_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <map>
@@ -68,7 +68,7 @@ public:
   }
 
   ///! Get the name for the generator.
-  std::string GetName() const CM_OVERRIDE
+  std::string GetName() const override
   {
     return cmGlobalUnixMakefileGenerator3::GetActualName();
   }
@@ -89,23 +89,23 @@ public:
   /** Get the documentation entry for this generator.  */
   static void GetDocumentation(cmDocumentationEntry& entry);
 
-  cmLocalGenerator* CreateLocalGenerator(cmMakefile* mf) CM_OVERRIDE;
+  cmLocalGenerator* CreateLocalGenerator(cmMakefile* mf) override;
 
   /**
    * Try to determine system information such as shared library
    * extension, pthreads, byte order etc.
    */
   void EnableLanguage(std::vector<std::string> const& languages, cmMakefile*,
-                      bool optional) CM_OVERRIDE;
+                      bool optional) override;
 
-  void Configure() CM_OVERRIDE;
+  void Configure() override;
 
   /**
    * Generate the all required files for building this project/tree. This
    * basically creates a series of LocalGenerators for each directory and
    * requests that they Generate.
    */
-  void Generate() CM_OVERRIDE;
+  void Generate() override;
 
   void WriteMainCMakefileLanguageRules(cmGeneratedFileStream& cmakefileStream,
                                        std::vector<cmLocalGenerator*>&);
@@ -134,7 +134,7 @@ public:
                             const std::string& targetName,
                             const std::string& config, bool fast, bool verbose,
                             std::vector<std::string> const& makeOptions =
-                              std::vector<std::string>()) CM_OVERRIDE;
+                              std::vector<std::string>()) override;
 
   /** Record per-target progress information.  */
   void RecordTargetProgress(cmMakefileTargetGenerator* tg);
@@ -149,9 +149,9 @@ public:
   /** Does the make tool tolerate .DELETE_ON_ERROR? */
   virtual bool AllowDeleteOnError() const { return true; }
 
-  bool IsIPOSupported() const CM_OVERRIDE { return true; }
+  bool IsIPOSupported() const override { return true; }
 
-  void ComputeTargetObjectDirectory(cmGeneratorTarget* gt) const CM_OVERRIDE;
+  void ComputeTargetObjectDirectory(cmGeneratorTarget* gt) const override;
 
   std::string IncludeDirective;
   bool DefineWindowsNULL;
@@ -178,37 +178,31 @@ protected:
   bool NeedRequiresStep(cmGeneratorTarget const*);
 
   // Target name hooks for superclass.
-  const char* GetAllTargetName() const CM_OVERRIDE { return "all"; }
-  const char* GetInstallTargetName() const CM_OVERRIDE { return "install"; }
-  const char* GetInstallLocalTargetName() const CM_OVERRIDE
+  const char* GetAllTargetName() const override { return "all"; }
+  const char* GetInstallTargetName() const override { return "install"; }
+  const char* GetInstallLocalTargetName() const override
   {
     return "install/local";
   }
-  const char* GetInstallStripTargetName() const CM_OVERRIDE
+  const char* GetInstallStripTargetName() const override
   {
     return "install/strip";
   }
-  const char* GetPreinstallTargetName() const CM_OVERRIDE
-  {
-    return "preinstall";
-  }
-  const char* GetTestTargetName() const CM_OVERRIDE { return "test"; }
-  const char* GetPackageTargetName() const CM_OVERRIDE { return "package"; }
-  const char* GetPackageSourceTargetName() const CM_OVERRIDE
+  const char* GetPreinstallTargetName() const override { return "preinstall"; }
+  const char* GetTestTargetName() const override { return "test"; }
+  const char* GetPackageTargetName() const override { return "package"; }
+  const char* GetPackageSourceTargetName() const override
   {
     return "package_source";
   }
-  const char* GetEditCacheTargetName() const CM_OVERRIDE
-  {
-    return "edit_cache";
-  }
-  const char* GetRebuildCacheTargetName() const CM_OVERRIDE
+  const char* GetEditCacheTargetName() const override { return "edit_cache"; }
+  const char* GetRebuildCacheTargetName() const override
   {
     return "rebuild_cache";
   }
-  const char* GetCleanTargetName() const CM_OVERRIDE { return "clean"; }
+  const char* GetCleanTargetName() const override { return "clean"; }
 
-  bool CheckALLOW_DUPLICATE_CUSTOM_TARGETS() const CM_OVERRIDE { return true; }
+  bool CheckALLOW_DUPLICATE_CUSTOM_TARGETS() const override { return true; }
 
   // Some make programs (Borland) do not keep a rule if there are no
   // dependencies or commands.  This is a problem for creating rules
@@ -247,13 +241,13 @@ protected:
   cmGeneratedFileStream* CommandDatabase;
 
 private:
-  const char* GetBuildIgnoreErrorsFlag() const CM_OVERRIDE { return "-i"; }
-  std::string GetEditCacheCommand() const CM_OVERRIDE;
+  const char* GetBuildIgnoreErrorsFlag() const override { return "-i"; }
+  std::string GetEditCacheCommand() const override;
 
   std::map<cmStateSnapshot, std::set<cmGeneratorTarget const*>,
            cmStateSnapshot::StrictWeakOrder>
     DirectoryTargetsMap;
-  void InitializeProgressMarks() CM_OVERRIDE;
+  void InitializeProgressMarks() override;
 };
 
 #endif
diff --git a/Source/cmGlobalVisualStudio10Generator.cxx b/Source/cmGlobalVisualStudio10Generator.cxx
index 4fff11a9f..8c9e4616e 100644
--- a/Source/cmGlobalVisualStudio10Generator.cxx
+++ b/Source/cmGlobalVisualStudio10Generator.cxx
@@ -51,7 +51,7 @@ class cmGlobalVisualStudio10Generator::Factory
 {
 public:
   cmGlobalGenerator* CreateGlobalGenerator(const std::string& name,
-                                           cmake* cm) const CM_OVERRIDE
+                                           cmake* cm) const override
   {
     std::string genName;
     const char* p = cmVS10GenName(name, genName);
@@ -73,22 +73,22 @@ public:
     return 0;
   }
 
-  void GetDocumentation(cmDocumentationEntry& entry) const CM_OVERRIDE
+  void GetDocumentation(cmDocumentationEntry& entry) const override
   {
     entry.Name = std::string(vs10generatorName) + " [arch]";
     entry.Brief = "Generates Visual Studio 2010 project files.  "
                   "Optional [arch] can be \"Win64\" or \"IA64\".";
   }
 
-  void GetGenerators(std::vector<std::string>& names) const CM_OVERRIDE
+  void GetGenerators(std::vector<std::string>& names) const override
   {
     names.push_back(vs10generatorName);
     names.push_back(vs10generatorName + std::string(" IA64"));
     names.push_back(vs10generatorName + std::string(" Win64"));
   }
 
-  bool SupportsToolset() const CM_OVERRIDE { return true; }
-  bool SupportsPlatform() const CM_OVERRIDE { return true; }
+  bool SupportsToolset() const override { return true; }
+  bool SupportsPlatform() const override { return true; }
 };
 
 cmGlobalGeneratorFactory* cmGlobalVisualStudio10Generator::NewFactory()
@@ -407,14 +407,14 @@ bool cmGlobalVisualStudio10Generator::InitializeWindowsStore(cmMakefile* mf)
 bool cmGlobalVisualStudio10Generator::SelectWindowsPhoneToolset(
   std::string& toolset) const
 {
-  toolset = "";
+  toolset.clear();
   return false;
 }
 
 bool cmGlobalVisualStudio10Generator::SelectWindowsStoreToolset(
   std::string& toolset) const
 {
-  toolset = "";
+  toolset.clear();
   return false;
 }
 
@@ -495,7 +495,7 @@ const char* cmGlobalVisualStudio10Generator::GetPlatformToolset() const
 {
   std::string const& toolset = this->GetPlatformToolsetString();
   if (toolset.empty()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return toolset.c_str();
 }
@@ -519,7 +519,7 @@ cmGlobalVisualStudio10Generator::GetPlatformToolsetHostArchitecture() const
   if (!this->GeneratorToolsetHostArchitecture.empty()) {
     return this->GeneratorToolsetHostArchitecture.c_str();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 const char* cmGlobalVisualStudio10Generator::GetPlatformToolsetCuda() const
@@ -527,7 +527,7 @@ const char* cmGlobalVisualStudio10Generator::GetPlatformToolsetCuda() const
   if (!this->GeneratorToolsetCuda.empty()) {
     return this->GeneratorToolsetCuda.c_str();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 std::string const&
@@ -695,7 +695,12 @@ bool cmGlobalVisualStudio10Generator::FindVCTargetsPath(cmMakefile* mf)
         xw.Content(this->WindowsTargetPlatformVersion);
        xw.EndElement(); // WindowsTargetPlatformVersion
      }
-     if (this->GetPlatformName() == "ARM") {
+     if (this->GetPlatformName() == "ARM64") {
+       xw.StartElement("WindowsSDKDesktopARM64Support");
+        xw.Content("true");
+       xw.EndElement(); // WindowsSDK64DesktopARMSupport
+     }
+     else if (this->GetPlatformName() == "ARM") {
        xw.StartElement("WindowsSDKDesktopARMSupport");
         xw.Content("true");
        xw.EndElement(); // WindowsSDKDesktopARMSupport
@@ -971,7 +976,7 @@ cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetClFlagTable() const
   cmIDEFlagTable const* table = this->ToolsetOptions.GetClFlagTable(
     this->GetPlatformName(), this->GetPlatformToolsetString());
 
-  return (table != CM_NULLPTR) ? table : this->DefaultClFlagTable;
+  return (table != nullptr) ? table : this->DefaultClFlagTable;
 }
 
 cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetCSharpFlagTable()
@@ -980,7 +985,7 @@ cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetCSharpFlagTable()
   cmIDEFlagTable const* table = this->ToolsetOptions.GetCSharpFlagTable(
     this->GetPlatformName(), this->GetPlatformToolsetString());
 
-  return (table != CM_NULLPTR) ? table : this->DefaultCSharpFlagTable;
+  return (table != nullptr) ? table : this->DefaultCSharpFlagTable;
 }
 
 cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetRcFlagTable() const
@@ -988,7 +993,7 @@ cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetRcFlagTable() const
   cmIDEFlagTable const* table = this->ToolsetOptions.GetRcFlagTable(
     this->GetPlatformName(), this->GetPlatformToolsetString());
 
-  return (table != CM_NULLPTR) ? table : this->DefaultRcFlagTable;
+  return (table != nullptr) ? table : this->DefaultRcFlagTable;
 }
 
 cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetLibFlagTable() const
@@ -996,7 +1001,7 @@ cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetLibFlagTable() const
   cmIDEFlagTable const* table = this->ToolsetOptions.GetLibFlagTable(
     this->GetPlatformName(), this->GetPlatformToolsetString());
 
-  return (table != CM_NULLPTR) ? table : this->DefaultLibFlagTable;
+  return (table != nullptr) ? table : this->DefaultLibFlagTable;
 }
 
 cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetLinkFlagTable() const
@@ -1004,7 +1009,7 @@ cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetLinkFlagTable() const
   cmIDEFlagTable const* table = this->ToolsetOptions.GetLinkFlagTable(
     this->GetPlatformName(), this->GetPlatformToolsetString());
 
-  return (table != CM_NULLPTR) ? table : this->DefaultLinkFlagTable;
+  return (table != nullptr) ? table : this->DefaultLinkFlagTable;
 }
 
 cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetCudaFlagTable() const
@@ -1023,7 +1028,7 @@ cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetMasmFlagTable() const
   cmIDEFlagTable const* table = this->ToolsetOptions.GetMasmFlagTable(
     this->GetPlatformName(), this->GetPlatformToolsetString());
 
-  return (table != CM_NULLPTR) ? table : this->DefaultMasmFlagTable;
+  return (table != nullptr) ? table : this->DefaultMasmFlagTable;
 }
 
 cmIDEFlagTable const* cmGlobalVisualStudio10Generator::GetNasmFlagTable() const
diff --git a/Source/cmGlobalVisualStudio10Generator.h b/Source/cmGlobalVisualStudio10Generator.h
index 4a5c2454b..5f80c7342 100644
--- a/Source/cmGlobalVisualStudio10Generator.h
+++ b/Source/cmGlobalVisualStudio10Generator.h
@@ -98,7 +98,7 @@ public:
 
   virtual const char* GetToolsVersion() { return "4.0"; }
 
-  bool FindMakeProgram(cmMakefile* mf) CM_OVERRIDE;
+  bool FindMakeProgram(cmMakefile* mf) override;
 
   static std::string GetInstalledNsightTegraVersion();
 
diff --git a/Source/cmGlobalVisualStudio11Generator.cxx b/Source/cmGlobalVisualStudio11Generator.cxx
index d37d4b095..cb3b0477f 100644
--- a/Source/cmGlobalVisualStudio11Generator.cxx
+++ b/Source/cmGlobalVisualStudio11Generator.cxx
@@ -35,7 +35,7 @@ class cmGlobalVisualStudio11Generator::Factory
 {
 public:
   cmGlobalGenerator* CreateGlobalGenerator(const std::string& name,
-                                           cmake* cm) const CM_OVERRIDE
+                                           cmake* cm) const override
   {
     std::string genName;
     const char* p = cmVS11GenName(name, genName);
@@ -68,14 +68,14 @@ public:
     return ret;
   }
 
-  void GetDocumentation(cmDocumentationEntry& entry) const CM_OVERRIDE
+  void GetDocumentation(cmDocumentationEntry& entry) const override
   {
     entry.Name = std::string(vs11generatorName) + " [arch]";
     entry.Brief = "Generates Visual Studio 2012 project files.  "
                   "Optional [arch] can be \"Win64\" or \"ARM\".";
   }
 
-  void GetGenerators(std::vector<std::string>& names) const CM_OVERRIDE
+  void GetGenerators(std::vector<std::string>& names) const override
   {
     names.push_back(vs11generatorName);
     names.push_back(vs11generatorName + std::string(" ARM"));
@@ -89,8 +89,8 @@ public:
     }
   }
 
-  bool SupportsToolset() const CM_OVERRIDE { return true; }
-  bool SupportsPlatform() const CM_OVERRIDE { return true; }
+  bool SupportsToolset() const override { return true; }
+  bool SupportsPlatform() const override { return true; }
 };
 
 cmGlobalGeneratorFactory* cmGlobalVisualStudio11Generator::NewFactory()
diff --git a/Source/cmGlobalVisualStudio11Generator.h b/Source/cmGlobalVisualStudio11Generator.h
index b4b327d8a..8b75aadbf 100644
--- a/Source/cmGlobalVisualStudio11Generator.h
+++ b/Source/cmGlobalVisualStudio11Generator.h
@@ -3,7 +3,7 @@
 #ifndef cmGlobalVisualStudio11Generator_h
 #define cmGlobalVisualStudio11Generator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <set>
diff --git a/Source/cmGlobalVisualStudio12Generator.cxx b/Source/cmGlobalVisualStudio12Generator.cxx
index de62ff0ac..a9c605cad 100644
--- a/Source/cmGlobalVisualStudio12Generator.cxx
+++ b/Source/cmGlobalVisualStudio12Generator.cxx
@@ -35,7 +35,7 @@ class cmGlobalVisualStudio12Generator::Factory
 {
 public:
   cmGlobalGenerator* CreateGlobalGenerator(const std::string& name,
-                                           cmake* cm) const CM_OVERRIDE
+                                           cmake* cm) const override
   {
     std::string genName;
     const char* p = cmVS12GenName(name, genName);
@@ -57,22 +57,22 @@ public:
     return 0;
   }
 
-  void GetDocumentation(cmDocumentationEntry& entry) const CM_OVERRIDE
+  void GetDocumentation(cmDocumentationEntry& entry) const override
   {
     entry.Name = std::string(vs12generatorName) + " [arch]";
     entry.Brief = "Generates Visual Studio 2013 project files.  "
                   "Optional [arch] can be \"Win64\" or \"ARM\".";
   }
 
-  void GetGenerators(std::vector<std::string>& names) const CM_OVERRIDE
+  void GetGenerators(std::vector<std::string>& names) const override
   {
     names.push_back(vs12generatorName);
     names.push_back(vs12generatorName + std::string(" ARM"));
     names.push_back(vs12generatorName + std::string(" Win64"));
   }
 
-  bool SupportsToolset() const CM_OVERRIDE { return true; }
-  bool SupportsPlatform() const CM_OVERRIDE { return true; }
+  bool SupportsToolset() const override { return true; }
+  bool SupportsPlatform() const override { return true; }
 };
 
 cmGlobalGeneratorFactory* cmGlobalVisualStudio12Generator::NewFactory()
diff --git a/Source/cmGlobalVisualStudio12Generator.h b/Source/cmGlobalVisualStudio12Generator.h
index ebc95bb63..5ba21a662 100644
--- a/Source/cmGlobalVisualStudio12Generator.h
+++ b/Source/cmGlobalVisualStudio12Generator.h
@@ -3,7 +3,7 @@
 #ifndef cmGlobalVisualStudio12Generator_h
 #define cmGlobalVisualStudio12Generator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <string>
@@ -32,7 +32,7 @@ public:
   virtual const char* GetToolsVersion() { return "12.0"; }
 protected:
   bool ProcessGeneratorToolsetField(std::string const& key,
-                                    std::string const& value) CM_OVERRIDE;
+                                    std::string const& value) override;
 
   virtual bool InitializeWindowsPhone(cmMakefile* mf);
   virtual bool InitializeWindowsStore(cmMakefile* mf);
diff --git a/Source/cmGlobalVisualStudio14Generator.cxx b/Source/cmGlobalVisualStudio14Generator.cxx
index c8cf02cdd..97d531378 100644
--- a/Source/cmGlobalVisualStudio14Generator.cxx
+++ b/Source/cmGlobalVisualStudio14Generator.cxx
@@ -35,7 +35,7 @@ class cmGlobalVisualStudio14Generator::Factory
 {
 public:
   cmGlobalGenerator* CreateGlobalGenerator(const std::string& name,
-                                           cmake* cm) const CM_OVERRIDE
+                                           cmake* cm) const override
   {
     std::string genName;
     const char* p = cmVS14GenName(name, genName);
@@ -57,22 +57,22 @@ public:
     return 0;
   }
 
-  void GetDocumentation(cmDocumentationEntry& entry) const CM_OVERRIDE
+  void GetDocumentation(cmDocumentationEntry& entry) const override
   {
     entry.Name = std::string(vs14generatorName) + " [arch]";
     entry.Brief = "Generates Visual Studio 2015 project files.  "
                   "Optional [arch] can be \"Win64\" or \"ARM\".";
   }
 
-  void GetGenerators(std::vector<std::string>& names) const CM_OVERRIDE
+  void GetGenerators(std::vector<std::string>& names) const override
   {
     names.push_back(vs14generatorName);
     names.push_back(vs14generatorName + std::string(" ARM"));
     names.push_back(vs14generatorName + std::string(" Win64"));
   }
 
-  bool SupportsToolset() const CM_OVERRIDE { return true; }
-  bool SupportsPlatform() const CM_OVERRIDE { return true; }
+  bool SupportsToolset() const override { return true; }
+  bool SupportsPlatform() const override { return true; }
 };
 
 cmGlobalGeneratorFactory* cmGlobalVisualStudio14Generator::NewFactory()
@@ -151,6 +151,13 @@ bool cmGlobalVisualStudio14Generator::SelectWindows10SDK(cmMakefile* mf,
     mf->IssueMessage(cmake::FATAL_ERROR, e.str());
     return false;
   }
+  if (!cmSystemTools::VersionCompareEqual(this->WindowsTargetPlatformVersion,
+                                          this->SystemVersion)) {
+    std::ostringstream e;
+    e << "Selecting Windows SDK version " << this->WindowsTargetPlatformVersion
+      << " to target Windows " << this->SystemVersion << ".";
+    mf->DisplayStatus(e.str().c_str(), -1);
+  }
   mf->AddDefinition("CMAKE_VS_WINDOWS_TARGET_PLATFORM_VERSION",
                     this->WindowsTargetPlatformVersion.c_str());
   return true;
diff --git a/Source/cmGlobalVisualStudio14Generator.h b/Source/cmGlobalVisualStudio14Generator.h
index 0ce9a5641..425fb227f 100644
--- a/Source/cmGlobalVisualStudio14Generator.h
+++ b/Source/cmGlobalVisualStudio14Generator.h
@@ -3,7 +3,7 @@
 #ifndef cmGlobalVisualStudio14Generator_h
 #define cmGlobalVisualStudio14Generator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <string>
diff --git a/Source/cmGlobalVisualStudio15Generator.cxx b/Source/cmGlobalVisualStudio15Generator.cxx
index ce1ba007f..d2bf7cca6 100644
--- a/Source/cmGlobalVisualStudio15Generator.cxx
+++ b/Source/cmGlobalVisualStudio15Generator.cxx
@@ -69,8 +69,8 @@ public:
     names.push_back(vs15generatorName + std::string(" Win64"));
   }
 
-  bool SupportsToolset() const CM_OVERRIDE { return true; }
-  bool SupportsPlatform() const CM_OVERRIDE { return true; }
+  bool SupportsToolset() const override { return true; }
+  bool SupportsPlatform() const override { return true; }
 };
 
 cmGlobalGeneratorFactory* cmGlobalVisualStudio15Generator::NewFactory()
diff --git a/Source/cmGlobalVisualStudio15Generator.h b/Source/cmGlobalVisualStudio15Generator.h
index 4be88f44f..e93488243 100644
--- a/Source/cmGlobalVisualStudio15Generator.h
+++ b/Source/cmGlobalVisualStudio15Generator.h
@@ -3,7 +3,7 @@
 #ifndef cmGlobalVisualStudio15Generator_h
 #define cmGlobalVisualStudio15Generator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <string>
@@ -28,7 +28,7 @@ public:
 
   virtual const char* GetToolsVersion() { return "15.0"; }
 protected:
-  bool InitializeWindows(cmMakefile* mf) CM_OVERRIDE;
+  bool InitializeWindows(cmMakefile* mf) override;
   virtual bool SelectWindowsStoreToolset(std::string& toolset) const;
 
   virtual const char* GetIDEVersion() { return "15.0"; }
@@ -44,8 +44,8 @@ protected:
   // Check for a Win 8 SDK known to the registry or VS installer tool.
   bool IsWin81SDKInstalled() const;
 
-  std::string FindMSBuildCommand() CM_OVERRIDE;
-  std::string FindDevEnvCommand() CM_OVERRIDE;
+  std::string FindMSBuildCommand() override;
+  std::string FindDevEnvCommand() override;
 
 private:
   class Factory;
diff --git a/Source/cmGlobalVisualStudio7Generator.cxx b/Source/cmGlobalVisualStudio7Generator.cxx
index b155f5b55..a14b5f753 100644
--- a/Source/cmGlobalVisualStudio7Generator.cxx
+++ b/Source/cmGlobalVisualStudio7Generator.cxx
@@ -334,7 +334,7 @@ void cmGlobalVisualStudio7Generator::OutputSLNFile(
 // output the SLN file
 void cmGlobalVisualStudio7Generator::OutputSLNFile()
 {
-  std::map<std::string, std::vector<cmLocalGenerator*> >::iterator it;
+  std::map<std::string, std::vector<cmLocalGenerator*>>::iterator it;
   for (it = this->ProjectMap.begin(); it != this->ProjectMap.end(); ++it) {
     this->OutputSLNFile(it->second[0], it->second);
   }
@@ -403,7 +403,7 @@ void cmGlobalVisualStudio7Generator::WriteTargetsToSolution(
         std::string dir = lg->GetCurrentBinaryDirectory();
         dir = root->ConvertToRelativePath(rootBinaryDir, dir.c_str());
         if (dir == ".") {
-          dir = ""; // msbuild cannot handle ".\" prefix
+          dir.clear(); // msbuild cannot handle ".\" prefix
         }
         this->WriteProject(fout, vcprojName, dir.c_str(), target);
         written = true;
@@ -418,7 +418,7 @@ void cmGlobalVisualStudio7Generator::WriteTargetsToSolution(
         std::vector<cmsys::String> tokens =
           cmSystemTools::SplitString(targetFolder, '/', false);
 
-        std::string cumulativePath = "";
+        std::string cumulativePath;
 
         for (std::vector<cmsys::String>::iterator iter = tokens.begin();
              iter != tokens.end(); ++iter) {
@@ -467,7 +467,7 @@ void cmGlobalVisualStudio7Generator::WriteFolders(std::ostream& fout)
   const char* prefix = "CMAKE_FOLDER_GUID_";
   const std::string::size_type skip_prefix = strlen(prefix);
   std::string guidProjectTypeFolder = "2150E333-8FDC-42A3-9474-1A3956D46DE8";
-  for (std::map<std::string, std::set<std::string> >::iterator iter =
+  for (std::map<std::string, std::set<std::string>>::iterator iter =
          VisualStudioFolders.begin();
        iter != VisualStudioFolders.end(); ++iter) {
     std::string fullName = iter->first;
@@ -487,7 +487,7 @@ void cmGlobalVisualStudio7Generator::WriteFolders(std::ostream& fout)
 
 void cmGlobalVisualStudio7Generator::WriteFoldersContent(std::ostream& fout)
 {
-  for (std::map<std::string, std::set<std::string> >::iterator iter =
+  for (std::map<std::string, std::set<std::string>>::iterator iter =
          VisualStudioFolders.begin();
        iter != VisualStudioFolders.end(); ++iter) {
     std::string key(iter->first);
@@ -708,7 +708,7 @@ std::set<std::string> cmGlobalVisualStudio7Generator::IsPartOfDefaultBuild(
           const char* propertyValue =
             target->Target->GetMakefile()->GetDefinition(propertyName);
           cmGeneratorExpression ge;
-          CM_AUTO_PTR<cmCompiledGeneratorExpression> cge =
+          std::unique_ptr<cmCompiledGeneratorExpression> cge =
             ge.Parse(propertyValue);
           if (cmSystemTools::IsOn(
                 cge->Evaluate(target->GetLocalGenerator(), *i))) {
diff --git a/Source/cmGlobalVisualStudio7Generator.h b/Source/cmGlobalVisualStudio7Generator.h
index 32a8d6056..c5aced44f 100644
--- a/Source/cmGlobalVisualStudio7Generator.h
+++ b/Source/cmGlobalVisualStudio7Generator.h
@@ -91,7 +91,7 @@ public:
 
   const char* GetIntelProjectVersion();
 
-  bool FindMakeProgram(cmMakefile* mf) CM_OVERRIDE;
+  bool FindMakeProgram(cmMakefile* mf) override;
 
   /** Is the Microsoft Assembler enabled?  */
   bool IsMasmEnabled() const { return this->MasmEnabled; }
@@ -156,7 +156,7 @@ protected:
 
   virtual void WriteFolders(std::ostream& fout);
   virtual void WriteFoldersContent(std::ostream& fout);
-  std::map<std::string, std::set<std::string> > VisualStudioFolders;
+  std::map<std::string, std::set<std::string>> VisualStudioFolders;
 
   // Set during OutputSLNFile with the name of the current project.
   // There is one SLN file per project.
diff --git a/Source/cmGlobalVisualStudio8Generator.cxx b/Source/cmGlobalVisualStudio8Generator.cxx
index f06a8a1c6..cc1d1a27b 100644
--- a/Source/cmGlobalVisualStudio8Generator.cxx
+++ b/Source/cmGlobalVisualStudio8Generator.cxx
@@ -17,7 +17,7 @@ class cmGlobalVisualStudio8Generator::Factory : public cmGlobalGeneratorFactory
 {
 public:
   cmGlobalGenerator* CreateGlobalGenerator(const std::string& name,
-                                           cmake* cm) const CM_OVERRIDE
+                                           cmake* cm) const override
   {
     if (strncmp(name.c_str(), vs8generatorName,
                 sizeof(vs8generatorName) - 1) != 0) {
@@ -51,14 +51,14 @@ public:
     return ret;
   }
 
-  void GetDocumentation(cmDocumentationEntry& entry) const CM_OVERRIDE
+  void GetDocumentation(cmDocumentationEntry& entry) const override
   {
     entry.Name = std::string(vs8generatorName) + " [arch]";
     entry.Brief = "Deprecated.  Generates Visual Studio 2005 project files.  "
                   "Optional [arch] can be \"Win64\".";
   }
 
-  void GetGenerators(std::vector<std::string>& names) const CM_OVERRIDE
+  void GetGenerators(std::vector<std::string>& names) const override
   {
     names.push_back(vs8generatorName);
     names.push_back(vs8generatorName + std::string(" Win64"));
@@ -73,8 +73,8 @@ public:
     }
   }
 
-  bool SupportsToolset() const CM_OVERRIDE { return false; }
-  bool SupportsPlatform() const CM_OVERRIDE { return true; }
+  bool SupportsToolset() const override { return false; }
+  bool SupportsPlatform() const override { return true; }
 };
 
 cmGlobalGeneratorFactory* cmGlobalVisualStudio8Generator::NewFactory()
@@ -301,7 +301,7 @@ bool cmGlobalVisualStudio8Generator::AddCheckTarget()
     // file as the main dependency because it would get
     // overwritten by the CreateVCProjBuildRule.
     // (this could be avoided with per-target source files)
-    std::string no_main_dependency = "";
+    std::string no_main_dependency;
     std::vector<std::string> no_byproducts;
     if (cmSourceFile* file = mf->AddCustomCommandToOutput(
           stamps, no_byproducts, listFiles, no_main_dependency, commandLines,
@@ -320,10 +320,10 @@ void cmGlobalVisualStudio8Generator::AddExtraIDETargets()
   cmGlobalVisualStudio7Generator::AddExtraIDETargets();
   if (this->AddCheckTarget()) {
     for (unsigned int i = 0; i < this->LocalGenerators.size(); ++i) {
-      std::vector<cmGeneratorTarget*> tgts =
+      const std::vector<cmGeneratorTarget*>& tgts =
         this->LocalGenerators[i]->GetGeneratorTargets();
       // All targets depend on the build-system check target.
-      for (std::vector<cmGeneratorTarget*>::iterator ti = tgts.begin();
+      for (std::vector<cmGeneratorTarget*>::const_iterator ti = tgts.begin();
            ti != tgts.end(); ++ti) {
         if ((*ti)->GetName() != CMAKE_CHECK_BUILD_SYSTEM_TARGET) {
           (*ti)->Target->AddUtility(CMAKE_CHECK_BUILD_SYSTEM_TARGET);
diff --git a/Source/cmGlobalVisualStudio9Generator.cxx b/Source/cmGlobalVisualStudio9Generator.cxx
index b1634e2ca..0abb3488e 100644
--- a/Source/cmGlobalVisualStudio9Generator.cxx
+++ b/Source/cmGlobalVisualStudio9Generator.cxx
@@ -14,7 +14,7 @@ class cmGlobalVisualStudio9Generator::Factory : public cmGlobalGeneratorFactory
 {
 public:
   cmGlobalGenerator* CreateGlobalGenerator(const std::string& name,
-                                           cmake* cm) const CM_OVERRIDE
+                                           cmake* cm) const override
   {
     if (strncmp(name.c_str(), vs9generatorName,
                 sizeof(vs9generatorName) - 1) != 0) {
@@ -52,14 +52,14 @@ public:
     return ret;
   }
 
-  void GetDocumentation(cmDocumentationEntry& entry) const CM_OVERRIDE
+  void GetDocumentation(cmDocumentationEntry& entry) const override
   {
     entry.Name = std::string(vs9generatorName) + " [arch]";
     entry.Brief = "Generates Visual Studio 2008 project files.  "
                   "Optional [arch] can be \"Win64\" or \"IA64\".";
   }
 
-  void GetGenerators(std::vector<std::string>& names) const CM_OVERRIDE
+  void GetGenerators(std::vector<std::string>& names) const override
   {
     names.push_back(vs9generatorName);
     names.push_back(vs9generatorName + std::string(" Win64"));
@@ -75,8 +75,8 @@ public:
     }
   }
 
-  bool SupportsToolset() const CM_OVERRIDE { return false; }
-  bool SupportsPlatform() const CM_OVERRIDE { return true; }
+  bool SupportsToolset() const override { return false; }
+  bool SupportsPlatform() const override { return true; }
 };
 
 cmGlobalGeneratorFactory* cmGlobalVisualStudio9Generator::NewFactory()
diff --git a/Source/cmGlobalVisualStudioGenerator.cxx b/Source/cmGlobalVisualStudioGenerator.cxx
index bbff48eb6..0651536a9 100644
--- a/Source/cmGlobalVisualStudioGenerator.cxx
+++ b/Source/cmGlobalVisualStudioGenerator.cxx
@@ -58,7 +58,7 @@ void cmGlobalVisualStudioGenerator::AddExtraIDETargets()
   const char* no_working_dir = 0;
   std::vector<std::string> no_depends;
   cmCustomCommandLines no_commands;
-  std::map<std::string, std::vector<cmLocalGenerator*> >::iterator it;
+  std::map<std::string, std::vector<cmLocalGenerator*>>::iterator it;
   for (it = this->ProjectMap.begin(); it != this->ProjectMap.end(); ++it) {
     std::vector<cmLocalGenerator*>& gen = it->second;
     // add the ALL_BUILD to the first local generator of each project
@@ -82,8 +82,10 @@ void cmGlobalVisualStudioGenerator::AddExtraIDETargets()
       // Now make all targets depend on the ALL_BUILD target
       for (std::vector<cmLocalGenerator*>::iterator i = gen.begin();
            i != gen.end(); ++i) {
-        std::vector<cmGeneratorTarget*> targets = (*i)->GetGeneratorTargets();
-        for (std::vector<cmGeneratorTarget*>::iterator t = targets.begin();
+        const std::vector<cmGeneratorTarget*>& targets =
+          (*i)->GetGeneratorTargets();
+        for (std::vector<cmGeneratorTarget*>::const_iterator t =
+               targets.begin();
              t != targets.end(); ++t) {
           cmGeneratorTarget* tgt = *t;
           if (tgt->GetType() == cmStateEnums::GLOBAL_TARGET ||
@@ -148,7 +150,7 @@ void cmGlobalVisualStudioGenerator::ConfigureCMakeVisualStudioMacros()
 {
   std::string dir = this->GetUserMacrosDirectory();
 
-  if (dir != "") {
+  if (!dir.empty()) {
     std::string src = cmSystemTools::GetCMakeRoot();
     src += "/Templates/" CMAKE_VSMACROS_FILENAME;
 
@@ -188,7 +190,7 @@ void cmGlobalVisualStudioGenerator::CallVisualStudioMacro(
   //  - the CMake vsmacros file is registered
   //  - there were .sln/.vcproj files changed during generation
   //
-  if (dir != "") {
+  if (!dir.empty()) {
     std::string macrosFile = dir + "/CMakeMacros/" CMAKE_VSMACROS_FILENAME;
     std::string nextSubkeyName;
     if (cmSystemTools::FileExists(macrosFile.c_str()) &&
@@ -293,13 +295,15 @@ bool cmGlobalVisualStudioGenerator::ComputeTargetDepends()
   if (!this->cmGlobalGenerator::ComputeTargetDepends()) {
     return false;
   }
-  std::map<std::string, std::vector<cmLocalGenerator*> >::iterator it;
+  std::map<std::string, std::vector<cmLocalGenerator*>>::iterator it;
   for (it = this->ProjectMap.begin(); it != this->ProjectMap.end(); ++it) {
     std::vector<cmLocalGenerator*>& gen = it->second;
     for (std::vector<cmLocalGenerator*>::iterator i = gen.begin();
          i != gen.end(); ++i) {
-      std::vector<cmGeneratorTarget*> targets = (*i)->GetGeneratorTargets();
-      for (std::vector<cmGeneratorTarget*>::iterator ti = targets.begin();
+      const std::vector<cmGeneratorTarget*>& targets =
+        (*i)->GetGeneratorTargets();
+      for (std::vector<cmGeneratorTarget*>::const_iterator ti =
+             targets.begin();
            ti != targets.end(); ++ti) {
         this->ComputeVSTargetDepends(*ti);
       }
diff --git a/Source/cmGlobalVisualStudioGenerator.h b/Source/cmGlobalVisualStudioGenerator.h
index 3c43ccdd2..62bfd3bdb 100644
--- a/Source/cmGlobalVisualStudioGenerator.h
+++ b/Source/cmGlobalVisualStudioGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmGlobalVisualStudioGenerator_h
 #define cmGlobalVisualStudioGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <map>
@@ -118,7 +118,7 @@ public:
   };
   class OrderedTargetDependSet;
 
-  bool FindMakeProgram(cmMakefile*) CM_OVERRIDE;
+  bool FindMakeProgram(cmMakefile*) override;
 
   virtual std::string ExpandCFGIntDir(const std::string& str,
                                       const std::string& config) const;
diff --git a/Source/cmGlobalWatcomWMakeGenerator.h b/Source/cmGlobalWatcomWMakeGenerator.h
index b2d6d5d71..e8b3a73c9 100644
--- a/Source/cmGlobalWatcomWMakeGenerator.h
+++ b/Source/cmGlobalWatcomWMakeGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmGlobalWatcomWMakeGenerator_h
 #define cmGlobalWatcomWMakeGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmGlobalGeneratorFactory.h"
 #include "cmGlobalUnixMakefileGenerator3.h"
@@ -29,7 +29,7 @@ public:
     return new cmGlobalGeneratorSimpleFactory<cmGlobalWatcomWMakeGenerator>();
   }
   ///! Get the name for the generator.
-  std::string GetName() const CM_OVERRIDE
+  std::string GetName() const override
   {
     return cmGlobalWatcomWMakeGenerator::GetActualName();
   }
@@ -43,10 +43,10 @@ public:
    * extension, pthreads, byte order etc.
    */
   void EnableLanguage(std::vector<std::string> const& languages, cmMakefile*,
-                      bool optional) CM_OVERRIDE;
+                      bool optional) override;
 
-  bool AllowNotParallel() const CM_OVERRIDE { return false; }
-  bool AllowDeleteOnError() const CM_OVERRIDE { return false; }
+  bool AllowNotParallel() const override { return false; }
+  bool AllowDeleteOnError() const override { return false; }
 };
 
 #endif
diff --git a/Source/cmGlobalXCodeGenerator.cxx b/Source/cmGlobalXCodeGenerator.cxx
index 903796123..c79ee475c 100644
--- a/Source/cmGlobalXCodeGenerator.cxx
+++ b/Source/cmGlobalXCodeGenerator.cxx
@@ -5,10 +5,12 @@
 #include "cmsys/RegularExpression.hxx"
 #include <assert.h>
 #include <iomanip>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <string.h>
 
+#include "cmAlgorithms.h"
 #include "cmComputeLinkInformation.h"
 #include "cmCustomCommandGenerator.h"
 #include "cmDocumentationEntry.h"
@@ -29,7 +31,6 @@
 #include "cmXCode21Object.h"
 #include "cmXCodeObject.h"
 #include "cmXCodeScheme.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 struct cmLinkImplementation;
@@ -46,8 +47,11 @@ public:
     : Version("1.5")
   {
   }
-  void StartElement(const std::string&, const char**) { this->Data = ""; }
-  void EndElement(const std::string& name)
+  void StartElement(const std::string&, const char**) override
+  {
+    this->Data = "";
+  }
+  void EndElement(const std::string& name) override
   {
     if (name == "key") {
       this->Key = this->Data;
@@ -57,7 +61,7 @@ public:
       }
     }
   }
-  void CharacterDataHandler(const char* data, int length)
+  void CharacterDataHandler(const char* data, int length) override
   {
     this->Data.append(data, length);
   }
@@ -79,7 +83,7 @@ class cmGlobalXCodeGenerator::BuildObjectListOrString
 public:
   BuildObjectListOrString(cmGlobalXCodeGenerator* gen, bool buildObjectList)
     : Generator(gen)
-    , Group(0)
+    , Group(nullptr)
     , Empty(true)
   {
     if (buildObjectList) {
@@ -107,9 +111,8 @@ public:
   {
     if (this->Group) {
       return this->Group;
-    } else {
-      return this->Generator->CreateString(this->String);
     }
+    return this->Generator->CreateString(this->String);
   }
 };
 
@@ -117,20 +120,20 @@ class cmGlobalXCodeGenerator::Factory : public cmGlobalGeneratorFactory
 {
 public:
   cmGlobalGenerator* CreateGlobalGenerator(const std::string& name,
-                                           cmake* cm) const CM_OVERRIDE;
+                                           cmake* cm) const override;
 
-  void GetDocumentation(cmDocumentationEntry& entry) const CM_OVERRIDE
+  void GetDocumentation(cmDocumentationEntry& entry) const override
   {
     cmGlobalXCodeGenerator::GetDocumentation(entry);
   }
 
-  void GetGenerators(std::vector<std::string>& names) const CM_OVERRIDE
+  void GetGenerators(std::vector<std::string>& names) const override
   {
     names.push_back(cmGlobalXCodeGenerator::GetActualName());
   }
 
-  bool SupportsToolset() const CM_OVERRIDE { return true; }
-  bool SupportsPlatform() const CM_OVERRIDE { return false; }
+  bool SupportsToolset() const override { return true; }
+  bool SupportsPlatform() const override { return false; }
 };
 
 cmGlobalXCodeGenerator::cmGlobalXCodeGenerator(
@@ -140,10 +143,10 @@ cmGlobalXCodeGenerator::cmGlobalXCodeGenerator(
   this->VersionString = version_string;
   this->XcodeVersion = version_number;
 
-  this->RootObject = 0;
-  this->MainGroupChildren = 0;
-  this->CurrentMakefile = 0;
-  this->CurrentLocalGenerator = 0;
+  this->RootObject = nullptr;
+  this->MainGroupChildren = nullptr;
+  this->CurrentMakefile = nullptr;
+  this->CurrentLocalGenerator = nullptr;
   this->XcodeBuildCommandInitialized = false;
 
   this->ObjectDirArchDefault = "$(CURRENT_ARCH)";
@@ -160,16 +163,18 @@ cmGlobalGeneratorFactory* cmGlobalXCodeGenerator::NewFactory()
 cmGlobalGenerator* cmGlobalXCodeGenerator::Factory::CreateGlobalGenerator(
   const std::string& name, cmake* cm) const
 {
-  if (name != GetActualName())
-    return 0;
+  if (name != GetActualName()) {
+    return nullptr;
+  }
 #if defined(CMAKE_BUILD_WITH_CMAKE)
   cmXcodeVersionParser parser;
   std::string versionFile;
   {
     std::string out;
     std::string::size_type pos;
-    if (cmSystemTools::RunSingleCommand("xcode-select --print-path", &out, 0,
-                                        0, 0, cmSystemTools::OUTPUT_NONE) &&
+    if (cmSystemTools::RunSingleCommand("xcode-select --print-path", &out,
+                                        nullptr, nullptr, nullptr,
+                                        cmSystemTools::OUTPUT_NONE) &&
         (pos = out.find(".app/"), pos != std::string::npos)) {
       versionFile = out.substr(0, pos + 5) + "Contents/version.plist";
     }
@@ -193,11 +198,11 @@ cmGlobalGenerator* cmGlobalXCodeGenerator::Factory::CreateGlobalGenerator(
   if (version_number < 30) {
     cm->IssueMessage(cmake::FATAL_ERROR,
                      "Xcode " + version_string + " not supported.");
-    return CM_NULLPTR;
+    return nullptr;
   }
 
-  CM_AUTO_PTR<cmGlobalXCodeGenerator> gg(
-    new cmGlobalXCodeGenerator(cm, version_string, version_number));
+  auto gg = cm::make_unique<cmGlobalXCodeGenerator>(cm, version_string,
+                                                    version_number);
   return gg.release();
 #else
   std::cerr << "CMake should be built with cmake to use Xcode, "
@@ -235,10 +240,9 @@ std::string cmGlobalXCodeGenerator::FindXcodeBuildCommand()
       makeProgram = "xcodebuild";
     }
     return makeProgram;
-  } else {
-    // Use cmakexbuild wrapper to suppress environment dump from output.
-    return cmSystemTools::GetCMakeCommand() + "xbuild";
   }
+  // Use cmakexbuild wrapper to suppress environment dump from output.
+  return cmSystemTools::GetCMakeCommand() + "xbuild";
 }
 
 bool cmGlobalXCodeGenerator::SetGeneratorToolset(std::string const& ts,
@@ -330,7 +334,7 @@ cmLocalGenerator* cmGlobalXCodeGenerator::CreateLocalGenerator(cmMakefile* mf)
 
 void cmGlobalXCodeGenerator::AddExtraIDETargets()
 {
-  std::map<std::string, std::vector<cmLocalGenerator*> >::iterator it;
+  std::map<std::string, std::vector<cmLocalGenerator*>>::iterator it;
   // make sure extra targets are added before calling
   // the parent generate which will call trace depends
   for (it = this->ProjectMap.begin(); it != this->ProjectMap.end(); ++it) {
@@ -347,7 +351,7 @@ void cmGlobalXCodeGenerator::Generate()
   if (cmSystemTools::GetErrorOccuredFlag()) {
     return;
   }
-  std::map<std::string, std::vector<cmLocalGenerator*> >::iterator it;
+  std::map<std::string, std::vector<cmLocalGenerator*>>::iterator it;
   for (it = this->ProjectMap.begin(); it != this->ProjectMap.end(); ++it) {
     cmLocalGenerator* root = it->second[0];
     this->SetGenerationRoot(root);
@@ -391,7 +395,7 @@ void cmGlobalXCodeGenerator::AddExtraTargets(
   cmMakefile* mf = root->GetMakefile();
 
   // Add ALL_BUILD
-  const char* no_working_directory = 0;
+  const char* no_working_directory = nullptr;
   std::vector<std::string> no_depends;
   cmTarget* allbuild =
     mf->AddUtilityCommand("ALL_BUILD", true, no_depends, no_working_directory,
@@ -433,18 +437,13 @@ void cmGlobalXCodeGenerator::AddExtraTargets(
 
   // now make the allbuild depend on all the non-utility targets
   // in the project
-  for (std::vector<cmLocalGenerator*>::iterator i = gens.begin();
-       i != gens.end(); ++i) {
-    cmLocalGenerator* lg = *i;
-    if (this->IsExcluded(root, *i)) {
+  for (auto& gen : gens) {
+    if (this->IsExcluded(root, gen)) {
       continue;
     }
 
-    std::vector<cmGeneratorTarget*> tgts = lg->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::iterator l = tgts.begin();
-         l != tgts.end(); l++) {
-      cmGeneratorTarget* target = *l;
-
+    const std::vector<cmGeneratorTarget*>& tgts = gen->GetGeneratorTargets();
+    for (auto target : tgts) {
       if (target->GetType() == cmStateEnums::GLOBAL_TARGET) {
         continue;
       }
@@ -470,7 +469,7 @@ void cmGlobalXCodeGenerator::AddExtraTargets(
         cmCustomCommandLines commandLines;
         commandLines.push_back(makeHelper);
         std::vector<std::string> no_byproducts;
-        lg->GetMakefile()->AddCustomCommandToTarget(
+        gen->GetMakefile()->AddCustomCommandToTarget(
           target->GetName(), no_byproducts, no_depends, commandLines,
           cmTarget::POST_BUILD, "Depend check for xcode", dir.c_str(), true,
           false, "", false, cmMakefile::AcceptObjectLibraryCommands);
@@ -482,7 +481,7 @@ void cmGlobalXCodeGenerator::AddExtraTargets(
       }
 
       // Refer to the build configuration file for easy editing.
-      listfile = lg->GetCurrentSourceDirectory();
+      listfile = gen->GetCurrentSourceDirectory();
       listfile += "/";
       listfile += "CMakeLists.txt";
       target->AddSource(listfile);
@@ -494,9 +493,8 @@ void cmGlobalXCodeGenerator::CreateReRunCMakeFile(
   cmLocalGenerator* root, std::vector<cmLocalGenerator*> const& gens)
 {
   std::vector<std::string> lfiles;
-  for (std::vector<cmLocalGenerator*>::const_iterator gi = gens.begin();
-       gi != gens.end(); ++gi) {
-    std::vector<std::string> const& lf = (*gi)->GetMakefile()->GetListFiles();
+  for (auto gen : gens) {
+    std::vector<std::string> const& lf = gen->GetMakefile()->GetListFiles();
     lfiles.insert(lfiles.end(), lf.begin(), lf.end());
   }
 
@@ -556,8 +554,8 @@ void cmGlobalXCodeGenerator::SortXCodeObjects()
 void cmGlobalXCodeGenerator::ClearXCodeObjects()
 {
   this->TargetDoneSet.clear();
-  for (unsigned int i = 0; i < this->XCodeObjects.size(); ++i) {
-    delete this->XCodeObjects[i];
+  for (auto& obj : this->XCodeObjects) {
+    delete obj;
   }
   this->XCodeObjects.clear();
   this->XCodeObjectIDs.clear();
@@ -571,7 +569,7 @@ void cmGlobalXCodeGenerator::ClearXCodeObjects()
 void cmGlobalXCodeGenerator::addObject(cmXCodeObject* obj)
 {
   if (obj->GetType() == cmXCodeObject::OBJECT) {
-    std::string id = obj->GetId();
+    const std::string& id = obj->GetId();
 
     // If this is a duplicate id, it's an error:
     //
@@ -668,8 +666,10 @@ cmXCodeObject* cmGlobalXCodeGenerator::CreateXCodeSourceFile(
   if (const char* cflags = sf->GetProperty("COMPILE_FLAGS")) {
     cmGeneratorExpression ge;
     std::string configName = "NO-PER-CONFIG-SUPPORT-IN-XCODE";
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> compiledExpr = ge.Parse(cflags);
-    const char* processed = compiledExpr->Evaluate(lg, configName);
+    std::unique_ptr<cmCompiledGeneratorExpression> compiledExpr =
+      ge.Parse(cflags);
+    const char* processed =
+      compiledExpr->Evaluate(lg, configName, false, gtgt);
     if (compiledExpr->GetHadContextSensitiveCondition()) {
       std::ostringstream e;
       /* clang-format off */
@@ -925,18 +925,16 @@ bool cmGlobalXCodeGenerator::CreateXCodeTargets(
   cmLocalGenerator* gen, std::vector<cmXCodeObject*>& targets)
 {
   this->SetCurrentLocalGenerator(gen);
-  std::vector<cmGeneratorTarget*> tgts =
+  const std::vector<cmGeneratorTarget*>& tgts =
     this->CurrentLocalGenerator->GetGeneratorTargets();
   typedef std::map<std::string, cmGeneratorTarget*, cmCompareTargets>
     cmSortedTargets;
   cmSortedTargets sortedTargets;
-  for (std::vector<cmGeneratorTarget*>::iterator l = tgts.begin();
-       l != tgts.end(); l++) {
-    sortedTargets[(*l)->GetName()] = *l;
+  for (auto tgt : tgts) {
+    sortedTargets[tgt->GetName()] = tgt;
   }
-  for (cmSortedTargets::iterator l = sortedTargets.begin();
-       l != sortedTargets.end(); l++) {
-    cmGeneratorTarget* gtgt = l->second;
+  for (auto& sortedTarget : sortedTargets) {
+    cmGeneratorTarget* gtgt = sortedTarget.second;
 
     std::string targetName = gtgt->GetName();
 
@@ -1018,7 +1016,7 @@ bool cmGlobalXCodeGenerator::CreateXCodeTargets(
         }
         std::string const& obj = (*oi)->GetFullPath();
         cmXCodeObject* xsf =
-          this->CreateXCodeSourceFileFromPath(obj, gtgt, "", 0);
+          this->CreateXCodeSourceFileFromPath(obj, gtgt, "", nullptr);
         externalObjFiles.push_back(xsf);
       }
     }
@@ -1028,10 +1026,10 @@ bool cmGlobalXCodeGenerator::CreateXCodeTargets(
     bool isBundleTarget = gtgt->GetPropertyAsBool("MACOSX_BUNDLE");
     bool isCFBundleTarget = gtgt->IsCFBundleOnApple();
 
-    cmXCodeObject* buildFiles = 0;
+    cmXCodeObject* buildFiles = nullptr;
 
     // create source build phase
-    cmXCodeObject* sourceBuildPhase = 0;
+    cmXCodeObject* sourceBuildPhase = nullptr;
     if (!sourceFiles.empty()) {
       sourceBuildPhase =
         this->CreateObject(cmXCodeObject::PBXSourcesBuildPhase);
@@ -1039,9 +1037,8 @@ bool cmGlobalXCodeGenerator::CreateXCodeTargets(
       sourceBuildPhase->AddAttribute("buildActionMask",
                                      this->CreateString("2147483647"));
       buildFiles = this->CreateObject(cmXCodeObject::OBJECT_LIST);
-      for (std::vector<cmXCodeObject*>::iterator i = sourceFiles.begin();
-           i != sourceFiles.end(); ++i) {
-        buildFiles->AddObject(*i);
+      for (auto& sourceFile : sourceFiles) {
+        buildFiles->AddObject(sourceFile);
       }
       sourceBuildPhase->AddAttribute("files", buildFiles);
       sourceBuildPhase->AddAttribute("runOnlyForDeploymentPostprocessing",
@@ -1049,7 +1046,7 @@ bool cmGlobalXCodeGenerator::CreateXCodeTargets(
     }
 
     // create header build phase - only for framework targets
-    cmXCodeObject* headerBuildPhase = 0;
+    cmXCodeObject* headerBuildPhase = nullptr;
     if (!headerFiles.empty() && isFrameworkTarget) {
       headerBuildPhase =
         this->CreateObject(cmXCodeObject::PBXHeadersBuildPhase);
@@ -1057,9 +1054,8 @@ bool cmGlobalXCodeGenerator::CreateXCodeTargets(
       headerBuildPhase->AddAttribute("buildActionMask",
                                      this->CreateString("2147483647"));
       buildFiles = this->CreateObject(cmXCodeObject::OBJECT_LIST);
-      for (std::vector<cmXCodeObject*>::iterator i = headerFiles.begin();
-           i != headerFiles.end(); ++i) {
-        buildFiles->AddObject(*i);
+      for (auto& headerFile : headerFiles) {
+        buildFiles->AddObject(headerFile);
       }
       headerBuildPhase->AddAttribute("files", buildFiles);
       headerBuildPhase->AddAttribute("runOnlyForDeploymentPostprocessing",
@@ -1067,7 +1063,7 @@ bool cmGlobalXCodeGenerator::CreateXCodeTargets(
     }
 
     // create resource build phase - only for framework or bundle targets
-    cmXCodeObject* resourceBuildPhase = 0;
+    cmXCodeObject* resourceBuildPhase = nullptr;
     if (!resourceFiles.empty() &&
         (isFrameworkTarget || isBundleTarget || isCFBundleTarget)) {
       resourceBuildPhase =
@@ -1076,9 +1072,8 @@ bool cmGlobalXCodeGenerator::CreateXCodeTargets(
       resourceBuildPhase->AddAttribute("buildActionMask",
                                        this->CreateString("2147483647"));
       buildFiles = this->CreateObject(cmXCodeObject::OBJECT_LIST);
-      for (std::vector<cmXCodeObject*>::iterator i = resourceFiles.begin();
-           i != resourceFiles.end(); ++i) {
-        buildFiles->AddObject(*i);
+      for (auto& resourceFile : resourceFiles) {
+        buildFiles->AddObject(resourceFile);
       }
       resourceBuildPhase->AddAttribute("files", buildFiles);
       resourceBuildPhase->AddAttribute("runOnlyForDeploymentPostprocessing",
@@ -1089,7 +1084,7 @@ bool cmGlobalXCodeGenerator::CreateXCodeTargets(
     // framework or bundle targets
     std::vector<cmXCodeObject*> contentBuildPhases;
     if (isFrameworkTarget || isBundleTarget || isCFBundleTarget) {
-      typedef std::map<std::string, std::vector<cmSourceFile*> >
+      typedef std::map<std::string, std::vector<cmSourceFile*>>
         mapOfVectorOfSourceFiles;
       mapOfVectorOfSourceFiles bundleFiles;
       for (std::vector<cmSourceFile*>::const_iterator i = classes.begin();
@@ -1140,7 +1135,7 @@ bool cmGlobalXCodeGenerator::CreateXCodeTargets(
     // create vector of "resource content file" build phases - only for
     // framework or bundle targets
     if (isFrameworkTarget || isBundleTarget || isCFBundleTarget) {
-      typedef std::map<std::string, std::vector<cmSourceFile*> >
+      typedef std::map<std::string, std::vector<cmSourceFile*>>
         mapOfVectorOfSourceFiles;
       mapOfVectorOfSourceFiles bundleFiles;
       for (std::vector<cmSourceFile*>::const_iterator i = classes.begin();
@@ -1177,7 +1172,7 @@ bool cmGlobalXCodeGenerator::CreateXCodeTargets(
     }
 
     // create framework build phase
-    cmXCodeObject* frameworkBuildPhase = 0;
+    cmXCodeObject* frameworkBuildPhase = nullptr;
     if (!externalObjFiles.empty()) {
       frameworkBuildPhase =
         this->CreateObject(cmXCodeObject::PBXFrameworksBuildPhase);
@@ -1186,9 +1181,8 @@ bool cmGlobalXCodeGenerator::CreateXCodeTargets(
                                         this->CreateString("2147483647"));
       buildFiles = this->CreateObject(cmXCodeObject::OBJECT_LIST);
       frameworkBuildPhase->AddAttribute("files", buildFiles);
-      for (std::vector<cmXCodeObject*>::iterator i = externalObjFiles.begin();
-           i != externalObjFiles.end(); ++i) {
-        buildFiles->AddObject(*i);
+      for (auto& externalObjFile : externalObjFiles) {
+        buildFiles->AddObject(externalObjFile);
       }
       frameworkBuildPhase->AddAttribute("runOnlyForDeploymentPostprocessing",
                                         this->CreateString("0"));
@@ -1209,14 +1203,13 @@ bool cmGlobalXCodeGenerator::CreateXCodeTargets(
 
 void cmGlobalXCodeGenerator::ForceLinkerLanguages()
 {
-  for (unsigned int i = 0; i < this->LocalGenerators.size(); ++i) {
-    std::vector<cmGeneratorTarget*> tgts =
-      this->LocalGenerators[i]->GetGeneratorTargets();
+  for (auto& localGenerator : this->LocalGenerators) {
+    const std::vector<cmGeneratorTarget*>& tgts =
+      localGenerator->GetGeneratorTargets();
     // All targets depend on the build-system check target.
-    for (std::vector<cmGeneratorTarget*>::const_iterator ti = tgts.begin();
-         ti != tgts.end(); ++ti) {
+    for (auto tgt : tgts) {
       // This makes sure all targets link using the proper language.
-      this->ForceLinkerLanguage(*ti);
+      this->ForceLinkerLanguage(tgt);
     }
   }
 }
@@ -1237,9 +1230,8 @@ void cmGlobalXCodeGenerator::ForceLinkerLanguage(cmGeneratorTarget* gtgt)
 
   // If the language is compiled as a source trust Xcode to link with it.
   cmLinkImplementation const* impl = gtgt->GetLinkImplementation("NOCONFIG");
-  for (std::vector<std::string>::const_iterator li = impl->Languages.begin();
-       li != impl->Languages.end(); ++li) {
-    if (*li == llang) {
+  for (auto const& Language : impl->Languages) {
+    if (Language == llang) {
       return;
     }
   }
@@ -1277,8 +1269,8 @@ cmXCodeObject* cmGlobalXCodeGenerator::CreateBuildPhase(
   const char* name, const char* name2, cmGeneratorTarget* target,
   const std::vector<cmCustomCommand>& commands)
 {
-  if (commands.size() == 0 && strcmp(name, "CMake ReRun") != 0) {
-    return 0;
+  if (commands.empty() && strcmp(name, "CMake ReRun") != 0) {
+    return nullptr;
   }
   cmXCodeObject* buildPhase =
     this->CreateObject(cmXCodeObject::PBXShellScriptBuildPhase);
@@ -1465,7 +1457,7 @@ void cmGlobalXCodeGenerator::FilterConfigurationAttribute(
     return;
   }
 
-  std::string::size_type endVariant = attribute.find("]", beginVariant + 9);
+  std::string::size_type endVariant = attribute.find(']', beginVariant + 9);
   if (endVariant == std::string::npos) {
     // There is no terminating bracket.
     return;
@@ -1541,16 +1533,15 @@ void cmGlobalXCodeGenerator::CreateCustomRulesMakefile(
   makefileStream << "all: ";
   std::map<const cmCustomCommand*, std::string> tname;
   int count = 0;
-  for (std::vector<cmCustomCommand>::const_iterator i = commands.begin();
-       i != commands.end(); ++i) {
-    cmCustomCommandGenerator ccg(*i, configName, this->CurrentLocalGenerator);
+  for (auto const& command : commands) {
+    cmCustomCommandGenerator ccg(command, configName,
+                                 this->CurrentLocalGenerator);
     if (ccg.GetNumberOfCommands() > 0) {
       const std::vector<std::string>& outputs = ccg.GetOutputs();
       if (!outputs.empty()) {
-        for (std::vector<std::string>::const_iterator o = outputs.begin();
-             o != outputs.end(); ++o) {
+        for (auto const& output : outputs) {
           makefileStream << "\\\n\t"
-                         << this->ConvertToRelativeForMake(o->c_str());
+                         << this->ConvertToRelativeForMake(output.c_str());
         }
       } else {
         std::ostringstream str;
@@ -1561,18 +1552,18 @@ void cmGlobalXCodeGenerator::CreateCustomRulesMakefile(
     }
   }
   makefileStream << "\n\n";
-  for (std::vector<cmCustomCommand>::const_iterator i = commands.begin();
-       i != commands.end(); ++i) {
-    cmCustomCommandGenerator ccg(*i, configName, this->CurrentLocalGenerator);
+  for (auto const& command : commands) {
+    cmCustomCommandGenerator ccg(command, configName,
+                                 this->CurrentLocalGenerator);
     if (ccg.GetNumberOfCommands() > 0) {
       makefileStream << "\n";
       const std::vector<std::string>& outputs = ccg.GetOutputs();
       if (!outputs.empty()) {
         // There is at least one output, start the rule for it
         const char* sep = "";
-        for (std::vector<std::string>::const_iterator oi = outputs.begin();
-             oi != outputs.end(); ++oi) {
-          makefileStream << sep << this->ConvertToRelativeForMake(oi->c_str());
+        for (auto const& output : outputs) {
+          makefileStream << sep
+                         << this->ConvertToRelativeForMake(output.c_str());
           sep = " ";
         }
         makefileStream << ": ";
@@ -1580,11 +1571,9 @@ void cmGlobalXCodeGenerator::CreateCustomRulesMakefile(
         // There are no outputs.  Use the generated force rule name.
         makefileStream << tname[&ccg.GetCC()] << ": ";
       }
-      for (std::vector<std::string>::const_iterator d =
-             ccg.GetDepends().begin();
-           d != ccg.GetDepends().end(); ++d) {
+      for (auto const& d : ccg.GetDepends()) {
         std::string dep;
-        if (this->CurrentLocalGenerator->GetRealDependency(*d, configName,
+        if (this->CurrentLocalGenerator->GetRealDependency(d, configName,
                                                            dep)) {
           makefileStream << "\\\n"
                          << this->ConvertToRelativeForMake(dep.c_str());
@@ -1639,9 +1628,7 @@ void cmGlobalXCodeGenerator::CreateBuildSettings(cmGeneratorTarget* gtgt,
   std::set<std::string> languages;
   gtgt->GetLanguages(languages, configName);
   std::map<std::string, std::string> cflags;
-  for (std::set<std::string>::iterator li = languages.begin();
-       li != languages.end(); ++li) {
-    std::string const& lang = *li;
+  for (auto const& lang : languages) {
     std::string& flags = cflags[lang];
 
     // Add language-specific flags.
@@ -1737,9 +1724,8 @@ void cmGlobalXCodeGenerator::CreateBuildSettings(cmGeneratorTarget* gtgt,
     } else {
       cmXCodeObject* archObjects =
         this->CreateObject(cmXCodeObject::OBJECT_LIST);
-      for (std::vector<std::string>::iterator i = archs.begin();
-           i != archs.end(); i++) {
-        archObjects->AddObject(this->CreateString(*i));
+      for (auto& arch : archs) {
+        archObjects->AddObject(this->CreateString(arch));
       }
       buildSettings->AddAttribute("ARCHS", archObjects);
     }
@@ -1754,8 +1740,8 @@ void cmGlobalXCodeGenerator::CreateBuildSettings(cmGeneratorTarget* gtgt,
   const char* version = gtgt->GetProperty("VERSION");
   const char* soversion = gtgt->GetProperty("SOVERSION");
   if (!gtgt->HasSOName(configName) || gtgt->IsFrameworkOnApple()) {
-    version = 0;
-    soversion = 0;
+    version = nullptr;
+    soversion = nullptr;
   }
   if (version && !soversion) {
     soversion = version;
@@ -1964,10 +1950,9 @@ void cmGlobalXCodeGenerator::CreateBuildSettings(cmGeneratorTarget* gtgt,
   std::set<std::string> emitted;
   emitted.insert("/System/Library/Frameworks");
 
-  for (std::vector<std::string>::iterator i = includes.begin();
-       i != includes.end(); ++i) {
-    if (this->NameResolvesToFramework(*i)) {
-      std::string frameworkDir = *i;
+  for (auto& include : includes) {
+    if (this->NameResolvesToFramework(include)) {
+      std::string frameworkDir = include;
       frameworkDir += "/../";
       frameworkDir = cmSystemTools::CollapseFullPath(frameworkDir);
       if (emitted.insert(frameworkDir).second) {
@@ -1980,9 +1965,9 @@ void cmGlobalXCodeGenerator::CreateBuildSettings(cmGeneratorTarget* gtgt,
         }
       }
     } else {
-      std::string incpath = this->XCodeEscapePath(*i);
+      std::string incpath = this->XCodeEscapePath(include);
       if (emitSystemIncludes &&
-          gtgt->IsSystemIncludeDirectory(*i, configName)) {
+          gtgt->IsSystemIncludeDirectory(include, configName)) {
         sysdirs.Add(incpath);
       } else {
         dirs.Add(incpath);
@@ -1992,12 +1977,11 @@ void cmGlobalXCodeGenerator::CreateBuildSettings(cmGeneratorTarget* gtgt,
   // Add framework search paths needed for linking.
   if (cmComputeLinkInformation* cli = gtgt->GetLinkInformation(configName)) {
     std::vector<std::string> const& fwDirs = cli->GetFrameworkPaths();
-    for (std::vector<std::string>::const_iterator fdi = fwDirs.begin();
-         fdi != fwDirs.end(); ++fdi) {
-      if (emitted.insert(*fdi).second) {
-        std::string incpath = this->XCodeEscapePath(*fdi);
+    for (auto const& fwDir : fwDirs) {
+      if (emitted.insert(fwDir).second) {
+        std::string incpath = this->XCodeEscapePath(fwDir);
         if (emitSystemIncludes &&
-            gtgt->IsSystemIncludeDirectory(*fdi, configName)) {
+            gtgt->IsSystemIncludeDirectory(fwDir, configName)) {
           sysfdirs.Add(incpath);
         } else {
           fdirs.Add(incpath);
@@ -2025,27 +2009,25 @@ void cmGlobalXCodeGenerator::CreateBuildSettings(cmGeneratorTarget* gtgt,
     // system include directory awareness. We need to also keep on setting
     // HEADER_SEARCH_PATHS to work around a missing compile options flag for
     // GNU assembly files (#16449)
-    for (std::set<std::string>::iterator li = languages.begin();
-         li != languages.end(); ++li) {
+    for (auto const& language : languages) {
       std::string includeFlags = this->CurrentLocalGenerator->GetIncludeFlags(
-        includes, gtgt, *li, true, false, configName);
+        includes, gtgt, language, true, false, configName);
 
       if (!includeFlags.empty()) {
-        cflags[*li] += " " + includeFlags;
+        cflags[language] += " " + includeFlags;
       }
     }
   }
 
   bool same_gflags = true;
   std::map<std::string, std::string> gflags;
-  std::string const* last_gflag = 0;
+  std::string const* last_gflag = nullptr;
   std::string optLevel = "0";
 
   // Minimal map of flags to build settings.
-  for (std::set<std::string>::iterator li = languages.begin();
-       li != languages.end(); ++li) {
-    std::string& flags = cflags[*li];
-    std::string& gflag = gflags[*li];
+  for (auto const& language : languages) {
+    std::string& flags = cflags[language];
+    std::string& gflag = gflags[language];
     std::string oflag =
       this->ExtractFlagRegex("(^| )(-Ofast|-Os|-O[0-9]*)( |$)", 2, flags);
     if (oflag.size() == 2) {
@@ -2070,10 +2052,9 @@ void cmGlobalXCodeGenerator::CreateBuildSettings(cmGeneratorTarget* gtgt,
   if (!same_gflags) {
     // We can't set the Xcode flag differently depending on the language,
     // so put them back in this case.
-    for (std::set<std::string>::iterator li = languages.begin();
-         li != languages.end(); ++li) {
-      cflags[*li] += " ";
-      cflags[*li] += gflags[*li];
+    for (auto const& language : languages) {
+      cflags[language] += " ";
+      cflags[language] += gflags[language];
     }
     debugStr = "NO";
   } else if (last_gflag && (last_gflag->empty() || *last_gflag == "-g0")) {
@@ -2090,25 +2071,24 @@ void cmGlobalXCodeGenerator::CreateBuildSettings(cmGeneratorTarget* gtgt,
                               this->CreateString("NO"));
   buildSettings->AddAttribute("GCC_INLINES_ARE_PRIVATE_EXTERN",
                               this->CreateString("NO"));
-  for (std::set<std::string>::iterator li = languages.begin();
-       li != languages.end(); ++li) {
-    std::string flags = cflags[*li] + " " + defFlags;
-    if (*li == "CXX") {
+  for (auto const& language : languages) {
+    std::string flags = cflags[language] + " " + defFlags;
+    if (language == "CXX") {
       buildSettings->AddAttribute("OTHER_CPLUSPLUSFLAGS",
                                   this->CreateString(flags));
-    } else if (*li == "Fortran") {
+    } else if (language == "Fortran") {
       buildSettings->AddAttribute("IFORT_OTHER_FLAGS",
                                   this->CreateString(flags));
-    } else if (*li == "C") {
+    } else if (language == "C") {
       buildSettings->AddAttribute("OTHER_CFLAGS", this->CreateString(flags));
-    } else if (*li == "Swift") {
+    } else if (language == "Swift") {
       buildSettings->AddAttribute("OTHER_SWIFT_FLAGS",
                                   this->CreateString(flags));
     }
   }
 
   // Add Fortran source format attribute if property is set.
-  const char* format = 0;
+  const char* format = nullptr;
   const char* tgtfmt = gtgt->GetProperty("Fortran_FORMAT");
   switch (cmOutputConverter::GetFortranFormat(tgtfmt)) {
     case cmOutputConverter::FortranFormatFixed:
@@ -2225,15 +2205,14 @@ void cmGlobalXCodeGenerator::CreateBuildSettings(cmGeneratorTarget* gtgt,
   // Convert "XCODE_ATTRIBUTE_*" properties directly.
   {
     std::vector<std::string> const& props = gtgt->GetPropertyKeys();
-    for (std::vector<std::string>::const_iterator i = props.begin();
-         i != props.end(); ++i) {
-      if (i->find("XCODE_ATTRIBUTE_") == 0) {
-        std::string attribute = i->substr(16);
+    for (auto const& prop : props) {
+      if (prop.find("XCODE_ATTRIBUTE_") == 0) {
+        std::string attribute = prop.substr(16);
         this->FilterConfigurationAttribute(configName, attribute);
         if (!attribute.empty()) {
           cmGeneratorExpression ge;
           std::string processed =
-            ge.Parse(gtgt->GetProperty(*i))
+            ge.Parse(gtgt->GetProperty(prop))
               ->Evaluate(this->CurrentLocalGenerator, configName);
           buildSettings->AddAttribute(attribute,
                                       this->CreateString(processed));
@@ -2268,8 +2247,8 @@ cmXCodeObject* cmGlobalXCodeGenerator::CreateUtilityTarget(
   target->SetComment(gtgt->GetName());
   cmXCodeObject* buildPhases = this->CreateObject(cmXCodeObject::OBJECT_LIST);
   std::vector<cmXCodeObject*> emptyContentVector;
-  this->CreateCustomCommands(buildPhases, 0, 0, 0, emptyContentVector, 0,
-                             gtgt);
+  this->CreateCustomCommands(buildPhases, nullptr, nullptr, nullptr,
+                             emptyContentVector, nullptr, gtgt);
   target->AddAttribute("buildPhases", buildPhases);
   this->AddConfigurations(target, gtgt);
   cmXCodeObject* dependencies = this->CreateObject(cmXCodeObject::OBJECT_LIST);
@@ -2283,7 +2262,7 @@ cmXCodeObject* cmGlobalXCodeGenerator::CreateUtilityTarget(
   if (gtgt->GetType() == cmStateEnums::UTILITY) {
     std::vector<cmSourceFile*> sources;
     if (!gtgt->GetConfigCommonSourceFiles(sources)) {
-      return 0;
+      return nullptr;
     }
 
     for (std::vector<cmSourceFile*>::const_iterator i = sources.begin();
@@ -2321,15 +2300,15 @@ std::string cmGlobalXCodeGenerator::AddConfigurations(cmXCodeObject* target,
   configlist->SetComment(comment);
   target->AddAttribute("buildConfigurationList",
                        this->CreateObjectReference(configlist));
-  for (unsigned int i = 0; i < configVector.size(); ++i) {
+  for (auto const& i : configVector) {
     cmXCodeObject* config =
       this->CreateObject(cmXCodeObject::XCBuildConfiguration);
     buildConfigurations->AddObject(config);
     cmXCodeObject* buildSettings =
       this->CreateObject(cmXCodeObject::ATTRIBUTE_GROUP);
-    this->CreateBuildSettings(gtgt, buildSettings, configVector[i]);
-    config->AddAttribute("name", this->CreateString(configVector[i]));
-    config->SetComment(configVector[i]);
+    this->CreateBuildSettings(gtgt, buildSettings, i);
+    config->AddAttribute("name", this->CreateString(i));
+    config->SetComment(i);
     config->AddAttribute("buildSettings", buildSettings);
   }
   if (!configVector.empty()) {
@@ -2349,9 +2328,8 @@ const char* cmGlobalXCodeGenerator::GetTargetLinkFlagsVar(
       (target->GetType() == cmStateEnums::STATIC_LIBRARY ||
        target->GetType() == cmStateEnums::OBJECT_LIBRARY)) {
     return "OTHER_LIBTOOLFLAGS";
-  } else {
-    return "OTHER_LDFLAGS";
   }
+  return "OTHER_LDFLAGS";
 }
 
 const char* cmGlobalXCodeGenerator::GetTargetFileType(
@@ -2368,12 +2346,13 @@ const char* cmGlobalXCodeGenerator::GetTargetFileType(
       return (target->GetPropertyAsBool("FRAMEWORK") ? "wrapper.framework"
                                                      : "archive.ar");
     case cmStateEnums::MODULE_LIBRARY:
-      if (target->IsXCTestOnApple())
+      if (target->IsXCTestOnApple()) {
         return "wrapper.cfbundle";
-      else if (target->IsCFBundleOnApple())
+      }
+      if (target->IsCFBundleOnApple()) {
         return "wrapper.plug-in";
-      else
-        return "compiled.mach-o.executable";
+      }
+      return "compiled.mach-o.executable";
     case cmStateEnums::SHARED_LIBRARY:
       return (target->GetPropertyAsBool("FRAMEWORK")
                 ? "wrapper.framework"
@@ -2383,7 +2362,7 @@ const char* cmGlobalXCodeGenerator::GetTargetFileType(
     default:
       break;
   }
-  return 0;
+  return nullptr;
 }
 
 const char* cmGlobalXCodeGenerator::GetTargetProductType(
@@ -2401,12 +2380,13 @@ const char* cmGlobalXCodeGenerator::GetTargetProductType(
                 ? "com.apple.product-type.framework"
                 : "com.apple.product-type.library.static");
     case cmStateEnums::MODULE_LIBRARY:
-      if (target->IsXCTestOnApple())
+      if (target->IsXCTestOnApple()) {
         return "com.apple.product-type.bundle.unit-test";
-      else if (target->IsCFBundleOnApple())
+      } else if (target->IsCFBundleOnApple()) {
         return "com.apple.product-type.bundle";
-      else
+      } else {
         return "com.apple.product-type.tool";
+      }
     case cmStateEnums::SHARED_LIBRARY:
       return (target->GetPropertyAsBool("FRAMEWORK")
                 ? "com.apple.product-type.framework"
@@ -2418,14 +2398,14 @@ const char* cmGlobalXCodeGenerator::GetTargetProductType(
     default:
       break;
   }
-  return 0;
+  return nullptr;
 }
 
 cmXCodeObject* cmGlobalXCodeGenerator::CreateXCodeTarget(
   cmGeneratorTarget* gtgt, cmXCodeObject* buildPhases)
 {
   if (gtgt->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
-    return 0;
+    return nullptr;
   }
   cmXCodeObject* target = this->CreateObject(cmXCodeObject::PBXNativeTarget);
   target->AddAttribute("buildPhases", buildPhases);
@@ -2469,13 +2449,13 @@ cmXCodeObject* cmGlobalXCodeGenerator::FindXCodeTarget(
   cmGeneratorTarget const* t)
 {
   if (!t) {
-    return 0;
+    return nullptr;
   }
 
   std::map<cmGeneratorTarget const*, cmXCodeObject*>::const_iterator const i =
     this->XCodeObjectMap.find(t);
   if (i == this->XCodeObjectMap.end()) {
-    return 0;
+    return nullptr;
   }
   return i->second;
 }
@@ -2560,15 +2540,14 @@ void cmGlobalXCodeGenerator::AppendBuildSettingAttribute(
   std::vector<cmXCodeObject*> list = buildConfigs->GetObjectList();
   // each configuration and the target itself has a buildSettings in it
   // list.push_back(target);
-  for (std::vector<cmXCodeObject*>::iterator i = list.begin(); i != list.end();
-       ++i) {
+  for (auto& i : list) {
     if (!configName.empty()) {
-      if ((*i)->GetObject("name")->GetString() == configName) {
-        cmXCodeObject* settings = (*i)->GetObject("buildSettings");
+      if (i->GetObject("name")->GetString() == configName) {
+        cmXCodeObject* settings = i->GetObject("buildSettings");
         this->AppendOrAddBuildSetting(settings, attribute, value);
       }
     } else {
-      cmXCodeObject* settings = (*i)->GetObject("buildSettings");
+      cmXCodeObject* settings = i->GetObject("buildSettings");
       this->AppendOrAddBuildSetting(settings, attribute, value);
     }
   }
@@ -2587,20 +2566,15 @@ void cmGlobalXCodeGenerator::AddDependAndLinkInformation(cmXCodeObject* target)
 
   // Add dependencies on other CMake targets.
   TargetDependSet const& deps = this->GetTargetDirectDepends(gt);
-  for (TargetDependSet::const_iterator i = deps.begin(); i != deps.end();
-       ++i) {
-    if (cmXCodeObject* dptarget = this->FindXCodeTarget(*i)) {
+  for (auto dep : deps) {
+    if (cmXCodeObject* dptarget = this->FindXCodeTarget(dep)) {
       this->AddDependTarget(target, dptarget);
     }
   }
 
   // Loop over configuration types and set per-configuration info.
-  for (std::vector<std::string>::iterator i =
-         this->CurrentConfigurationTypes.begin();
-       i != this->CurrentConfigurationTypes.end(); ++i) {
+  for (auto const& configName : this->CurrentConfigurationTypes) {
     // Get the current configuration name.
-    std::string configName = *i;
-
     if (this->XcodeVersion >= 50) {
       // Add object library contents as link flags.
       std::string linkObjs;
@@ -2636,9 +2610,8 @@ void cmGlobalXCodeGenerator::AddDependAndLinkInformation(cmXCodeObject* target)
     // Add dependencies directly on library files.
     {
       std::vector<std::string> const& libDeps = cli.GetDepends();
-      for (std::vector<std::string>::const_iterator j = libDeps.begin();
-           j != libDeps.end(); ++j) {
-        target->AddDependLibrary(configName, *j);
+      for (auto const& libDep : libDeps) {
+        target->AddDependLibrary(configName, libDep);
       }
     }
 
@@ -2646,16 +2619,15 @@ void cmGlobalXCodeGenerator::AddDependAndLinkInformation(cmXCodeObject* target)
     {
       std::vector<std::string> const& libDirs = cli.GetDirectories();
       std::string linkDirs;
-      for (std::vector<std::string>::const_iterator libDir = libDirs.begin();
-           libDir != libDirs.end(); ++libDir) {
-        if (libDir->size() && *libDir != "/usr/lib") {
+      for (auto const& libDir : libDirs) {
+        if (!libDir.empty() && libDir != "/usr/lib") {
           // Now add the same one but append
           // $(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME) to it:
           linkDirs += " ";
           linkDirs += this->XCodeEscapePath(
-            *libDir + "/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)");
+            libDir + "/$(CONFIGURATION)$(EFFECTIVE_PLATFORM_NAME)");
           linkDirs += " ";
-          linkDirs += this->XCodeEscapePath(*libDir);
+          linkDirs += this->XCodeEscapePath(libDir);
         }
       }
       this->AppendBuildSettingAttribute(target, "LIBRARY_SEARCH_PATHS",
@@ -2668,18 +2640,18 @@ void cmGlobalXCodeGenerator::AddDependAndLinkInformation(cmXCodeObject* target)
       const char* sep = "";
       typedef cmComputeLinkInformation::ItemVector ItemVector;
       ItemVector const& libNames = cli.GetItems();
-      for (ItemVector::const_iterator li = libNames.begin();
-           li != libNames.end(); ++li) {
+      for (auto const& libName : libNames) {
         linkLibs += sep;
         sep = " ";
-        if (li->IsPath) {
-          linkLibs += this->XCodeEscapePath(li->Value);
-        } else if (!li->Target ||
-                   li->Target->GetType() != cmStateEnums::INTERFACE_LIBRARY) {
-          linkLibs += li->Value;
+        if (libName.IsPath) {
+          linkLibs += this->XCodeEscapePath(libName.Value);
+        } else if (!libName.Target ||
+                   libName.Target->GetType() !=
+                     cmStateEnums::INTERFACE_LIBRARY) {
+          linkLibs += libName.Value;
         }
-        if (li->Target && !li->Target->IsImported()) {
-          target->AddDependTarget(configName, li->Target->GetName());
+        if (libName.Target && !libName.Target->IsImported()) {
+          target->AddDependTarget(configName, libName.Target->GetName());
         }
       }
       this->AppendBuildSettingAttribute(
@@ -2691,15 +2663,12 @@ void cmGlobalXCodeGenerator::AddDependAndLinkInformation(cmXCodeObject* target)
 bool cmGlobalXCodeGenerator::CreateGroups(
   std::vector<cmLocalGenerator*>& generators)
 {
-  for (std::vector<cmLocalGenerator*>::iterator i = generators.begin();
-       i != generators.end(); ++i) {
-    cmMakefile* mf = (*i)->GetMakefile();
+  for (auto& generator : generators) {
+    cmMakefile* mf = generator->GetMakefile();
     std::vector<cmSourceGroup> sourceGroups = mf->GetSourceGroups();
-    std::vector<cmGeneratorTarget*> tgts = (*i)->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::iterator l = tgts.begin();
-         l != tgts.end(); l++) {
-      cmGeneratorTarget* gtgt = *l;
-
+    const std::vector<cmGeneratorTarget*>& tgts =
+      generator->GetGeneratorTargets();
+    for (auto gtgt : tgts) {
       // Same skipping logic here as in CreateXCodeTargets so that we do not
       // end up with (empty anyhow) ALL_BUILD and XCODE_DEPEND_HELPER source
       // groups:
@@ -2723,10 +2692,8 @@ bool cmGlobalXCodeGenerator::CreateGroups(
         gtgt->GetAllConfigSources();
 
       // Put cmSourceFile instances in proper groups:
-      for (std::vector<cmGeneratorTarget::AllConfigSource>::const_iterator si =
-             sources.begin();
-           si != sources.end(); ++si) {
-        cmSourceFile const* sf = si->Source;
+      for (auto const& si : sources) {
+        cmSourceFile const* sf = si.Source;
         if (this->XcodeVersion >= 50 && !sf->GetObjectLibrary().empty()) {
           // Object library files go on the link line instead.
           continue;
@@ -2745,19 +2712,21 @@ bool cmGlobalXCodeGenerator::CreateGroups(
 }
 
 cmXCodeObject* cmGlobalXCodeGenerator::CreatePBXGroup(cmXCodeObject* parent,
-                                                      std::string name)
+                                                      const std::string& name)
 {
-  cmXCodeObject* parentChildren = NULL;
-  if (parent)
+  cmXCodeObject* parentChildren = nullptr;
+  if (parent) {
     parentChildren = parent->GetObject("children");
+  }
   cmXCodeObject* group = this->CreateObject(cmXCodeObject::PBXGroup);
   cmXCodeObject* groupChildren =
     this->CreateObject(cmXCodeObject::OBJECT_LIST);
   group->AddAttribute("name", this->CreateString(name));
   group->AddAttribute("children", groupChildren);
   group->AddAttribute("sourceTree", this->CreateString("<group>"));
-  if (parentChildren)
+  if (parentChildren) {
     parentChildren->AddObject(group);
+  }
   return group;
 }
 
@@ -2781,7 +2750,7 @@ cmXCodeObject* cmGlobalXCodeGenerator::CreateOrGetPBXGroup(
   }
 
   it = this->TargetGroup.find(target);
-  cmXCodeObject* tgroup = 0;
+  cmXCodeObject* tgroup = nullptr;
   if (it != this->TargetGroup.end()) {
     tgroup = it->second;
   } else {
@@ -2811,7 +2780,7 @@ cmXCodeObject* cmGlobalXCodeGenerator::CreateOrGetPBXGroup(
   // If it's the default source group (empty name) then put the source file
   // directly in the tgroup...
   //
-  if (std::string(sg->GetFullName()) == "") {
+  if (std::string(sg->GetFullName()).empty()) {
     this->GroupNameMap[s] = tgroup;
     return tgroup;
   }
@@ -2822,13 +2791,13 @@ cmXCodeObject* cmGlobalXCodeGenerator::CreateOrGetPBXGroup(
       cmSystemTools::tokenize(sg->GetFullName(), "\\");
     std::string curr_folder = target;
     curr_folder += "/";
-    for (std::vector<std::string>::size_type i = 0; i < folders.size(); i++) {
-      curr_folder += folders[i];
+    for (auto const& folder : folders) {
+      curr_folder += folder;
       std::map<std::string, cmXCodeObject*>::iterator i_folder =
         this->GroupNameMap.find(curr_folder);
       // Create new folder
       if (i_folder == this->GroupNameMap.end()) {
-        cmXCodeObject* group = this->CreatePBXGroup(tgroup, folders[i]);
+        cmXCodeObject* group = this->CreatePBXGroup(tgroup, folder);
         this->GroupNameMap[curr_folder] = group;
         tgroup = group;
       } else {
@@ -2847,15 +2816,15 @@ bool cmGlobalXCodeGenerator::CreateXCodeObjects(
   cmLocalGenerator* root, std::vector<cmLocalGenerator*>& generators)
 {
   this->ClearXCodeObjects();
-  this->RootObject = 0;
-  this->MainGroupChildren = 0;
+  this->RootObject = nullptr;
+  this->MainGroupChildren = nullptr;
   cmXCodeObject* group = this->CreateObject(cmXCodeObject::ATTRIBUTE_GROUP);
   group->AddAttribute("COPY_PHASE_STRIP", this->CreateString("NO"));
   cmXCodeObject* listObjs = this->CreateObject(cmXCodeObject::OBJECT_LIST);
-  for (unsigned int i = 0; i < this->CurrentConfigurationTypes.size(); ++i) {
+  for (auto& CurrentConfigurationType : this->CurrentConfigurationTypes) {
     cmXCodeObject* buildStyle =
       this->CreateObject(cmXCodeObject::PBXBuildStyle);
-    const char* name = this->CurrentConfigurationTypes[i].c_str();
+    const char* name = CurrentConfigurationType.c_str();
     buildStyle->AddAttribute("name", this->CreateString(name));
     buildStyle->SetComment(name);
     cmXCodeObject* sgroup = this->CreateObject(cmXCodeObject::ATTRIBUTE_GROUP);
@@ -2888,7 +2857,7 @@ bool cmGlobalXCodeGenerator::CreateXCodeObjects(
   std::string project_id = "PROJECT_";
   project_id += root->GetProjectName();
   this->RootObject->SetId(
-    this->GetOrCreateId(project_id.c_str(), this->RootObject->GetId()));
+    this->GetOrCreateId(project_id, this->RootObject->GetId()));
 
   group = this->CreateObject(cmXCodeObject::ATTRIBUTE_GROUP);
   this->RootObject->AddAttribute("mainGroup",
@@ -2904,15 +2873,16 @@ bool cmGlobalXCodeGenerator::CreateXCodeObjects(
   v << std::setfill('0') << std::setw(4) << XcodeVersion * 10;
   group->AddAttribute("LastUpgradeCheck", this->CreateString(v.str()));
   this->RootObject->AddAttribute("attributes", group);
-  if (this->XcodeVersion >= 32)
+  if (this->XcodeVersion >= 32) {
     this->RootObject->AddAttribute("compatibilityVersion",
                                    this->CreateString("Xcode 3.2"));
-  else if (this->XcodeVersion >= 31)
+  } else if (this->XcodeVersion >= 31) {
     this->RootObject->AddAttribute("compatibilityVersion",
                                    this->CreateString("Xcode 3.1"));
-  else
+  } else {
     this->RootObject->AddAttribute("compatibilityVersion",
                                    this->CreateString("Xcode 3.0"));
+  }
   // Point Xcode at the top of the source tree.
   {
     std::string pdir =
@@ -2924,7 +2894,7 @@ bool cmGlobalXCodeGenerator::CreateXCodeObjects(
     this->CreateObject(cmXCodeObject::XCConfigurationList);
   cmXCodeObject* buildConfigurations =
     this->CreateObject(cmXCodeObject::OBJECT_LIST);
-  typedef std::vector<std::pair<std::string, cmXCodeObject*> > Configs;
+  typedef std::vector<std::pair<std::string, cmXCodeObject*>> Configs;
   Configs configs;
   const char* defaultConfigName = "Debug";
   for (unsigned int i = 0; i < this->CurrentConfigurationTypes.size(); ++i) {
@@ -2937,8 +2907,8 @@ bool cmGlobalXCodeGenerator::CreateXCodeObjects(
     config->AddAttribute("name", this->CreateString(name));
     configs.push_back(std::make_pair(name, config));
   }
-  for (Configs::iterator c = configs.begin(); c != configs.end(); ++c) {
-    buildConfigurations->AddObject(c->second);
+  for (auto& config : configs) {
+    buildConfigurations->AddObject(config.second);
   }
   configlist->AddAttribute("buildConfigurations", buildConfigurations);
 
@@ -2996,7 +2966,7 @@ bool cmGlobalXCodeGenerator::CreateXCodeObjects(
   symroot += "/build";
   buildSettings->AddAttribute("SYMROOT", this->CreateString(symroot));
 
-  for (Configs::iterator i = configs.begin(); i != configs.end(); ++i) {
+  for (auto& config : configs) {
     cmXCodeObject* buildSettingsForCfg = this->CreateFlatClone(buildSettings);
 
     // Put this last so it can override existing settings
@@ -3006,43 +2976,38 @@ bool cmGlobalXCodeGenerator::CreateXCodeObjects(
          d != vars.end(); ++d) {
       if (d->find("CMAKE_XCODE_ATTRIBUTE_") == 0) {
         std::string attribute = d->substr(22);
-        this->FilterConfigurationAttribute(i->first, attribute);
+        this->FilterConfigurationAttribute(config.first, attribute);
         if (!attribute.empty()) {
           cmGeneratorExpression ge;
           std::string processed =
             ge.Parse(this->CurrentMakefile->GetDefinition(*d))
-              ->Evaluate(this->CurrentLocalGenerator, i->first);
+              ->Evaluate(this->CurrentLocalGenerator, config.first);
           buildSettingsForCfg->AddAttribute(attribute,
                                             this->CreateString(processed));
         }
       }
     }
     // store per-config buildSettings into configuration object
-    i->second->AddAttribute("buildSettings", buildSettingsForCfg);
+    config.second->AddAttribute("buildSettings", buildSettingsForCfg);
   }
 
   this->RootObject->AddAttribute("buildConfigurationList",
                                  this->CreateObjectReference(configlist));
 
   std::vector<cmXCodeObject*> targets;
-  for (std::vector<cmLocalGenerator*>::iterator i = generators.begin();
-       i != generators.end(); ++i) {
-    if (!this->CreateXCodeTargets(*i, targets)) {
+  for (auto& generator : generators) {
+    if (!this->CreateXCodeTargets(generator, targets)) {
       return false;
     }
   }
   // loop over all targets and add link and depend info
-  for (std::vector<cmXCodeObject*>::iterator i = targets.begin();
-       i != targets.end(); ++i) {
-    cmXCodeObject* t = *i;
+  for (auto t : targets) {
     this->AddDependAndLinkInformation(t);
   }
   this->CreateXCodeDependHackTarget(targets);
   // now add all targets to the root object
   cmXCodeObject* allTargets = this->CreateObject(cmXCodeObject::OBJECT_LIST);
-  for (std::vector<cmXCodeObject*>::iterator i = targets.begin();
-       i != targets.end(); ++i) {
-    cmXCodeObject* t = *i;
+  for (auto t : targets) {
     allTargets->AddObject(t);
     cmXCodeObject* productRef = t->GetObject("productReference");
     if (productRef) {
@@ -3135,9 +3100,7 @@ void cmGlobalXCodeGenerator::CreateXCodeDependHackTarget(
          this->CurrentConfigurationTypes.begin();
        ct != this->CurrentConfigurationTypes.end(); ++ct) {
     std::string configName = *ct;
-    for (std::vector<cmXCodeObject*>::iterator i = targets.begin();
-         i != targets.end(); ++i) {
-      cmXCodeObject* target = *i;
+    for (auto target : targets) {
       cmGeneratorTarget* gt = target->GetTarget();
 
       if (gt->GetType() == cmStateEnums::EXECUTABLE ||
@@ -3162,9 +3125,8 @@ void cmGlobalXCodeGenerator::CreateXCodeDependHackTarget(
           target->GetDependTargets().find(*ct);
         if (y != target->GetDependTargets().end()) {
           std::vector<std::string> const& deptgts = y->second;
-          for (std::vector<std::string>::const_iterator d = deptgts.begin();
-               d != deptgts.end(); ++d) {
-            makefileStream << this->PostBuildMakeTarget(*d, *ct) << ": "
+          for (auto const& deptgt : deptgts) {
+            makefileStream << this->PostBuildMakeTarget(deptgt, *ct) << ": "
                            << trel << "\n";
           }
         }
@@ -3186,9 +3148,8 @@ void cmGlobalXCodeGenerator::CreateXCodeDependHackTarget(
           target->GetDependLibraries().find(*ct);
         if (x != target->GetDependLibraries().end()) {
           std::vector<std::string> const& deplibs = x->second;
-          for (std::vector<std::string>::const_iterator d = deplibs.begin();
-               d != deplibs.end(); ++d) {
-            std::string file = this->ConvertToRelativeForMake(d->c_str());
+          for (auto const& deplib : deplibs) {
+            std::string file = this->ConvertToRelativeForMake(deplib.c_str());
             makefileStream << "\\\n\t" << file;
             dummyRules.insert(file);
           }
@@ -3220,11 +3181,9 @@ void cmGlobalXCodeGenerator::CreateXCodeDependHackTarget(
         if (this->Architectures.size() > 1) {
           std::string universal = this->GetObjectsNormalDirectory(
             this->CurrentProject, configName, gt);
-          for (std::vector<std::string>::iterator arch =
-                 this->Architectures.begin();
-               arch != this->Architectures.end(); ++arch) {
+          for (auto& architecture : this->Architectures) {
             std::string universalFile = universal;
-            universalFile += *arch;
+            universalFile += architecture;
             universalFile += "/";
             universalFile += gt->GetFullName(configName);
             makefileStream << "\t/bin/rm -f "
@@ -3241,22 +3200,20 @@ void cmGlobalXCodeGenerator::CreateXCodeDependHackTarget(
   makefileStream << "\n\n"
                  << "# For each target create a dummy rule"
                  << "so the target does not have to exist\n";
-  for (std::set<std::string>::const_iterator it = dummyRules.begin();
-       it != dummyRules.end(); ++it) {
-    makefileStream << *it << ":\n";
+  for (auto const& dummyRule : dummyRules) {
+    makefileStream << dummyRule << ":\n";
   }
 }
 
 void cmGlobalXCodeGenerator::OutputXCodeProject(
   cmLocalGenerator* root, std::vector<cmLocalGenerator*>& generators)
 {
-  if (generators.size() == 0) {
+  if (generators.empty()) {
     return;
   }
   // Skip local generators that are excluded from this project.
-  for (std::vector<cmLocalGenerator*>::iterator g = generators.begin();
-       g != generators.end(); ++g) {
-    if (this->IsExcluded(root, *g)) {
+  for (auto& generator : generators) {
+    if (this->IsExcluded(root, generator)) {
       continue;
     }
   }
@@ -3298,6 +3255,31 @@ void cmGlobalXCodeGenerator::OutputXCodeProject(
 void cmGlobalXCodeGenerator::OutputXCodeSharedSchemes(
   const std::string& xcProjDir)
 {
+  // collect all tests for the targets
+  std::map<std::string, cmXCodeScheme::TestObjects> testables;
+
+  for (std::vector<cmXCodeObject*>::const_iterator i =
+         this->XCodeObjects.begin();
+       i != this->XCodeObjects.end(); ++i) {
+    cmXCodeObject* obj = *i;
+    if (obj->GetType() != cmXCodeObject::OBJECT ||
+        obj->GetIsA() != cmXCodeObject::PBXNativeTarget) {
+      continue;
+    }
+
+    if (!obj->GetTarget()->IsXCTestOnApple()) {
+      continue;
+    }
+
+    const char* testee = obj->GetTarget()->GetProperty("XCTEST_TESTEE");
+    if (!testee) {
+      continue;
+    }
+
+    testables[testee].push_back(obj);
+  }
+
+  // generate scheme
   for (std::vector<cmXCodeObject*>::const_iterator i =
          this->XCodeObjects.begin();
        i != this->XCodeObjects.end(); ++i) {
@@ -3305,8 +3287,9 @@ void cmGlobalXCodeGenerator::OutputXCodeSharedSchemes(
     if (obj->GetType() == cmXCodeObject::OBJECT &&
         (obj->GetIsA() == cmXCodeObject::PBXNativeTarget ||
          obj->GetIsA() == cmXCodeObject::PBXAggregateTarget)) {
-      cmXCodeScheme schm(obj, this->CurrentConfigurationTypes,
-                         this->XcodeVersion);
+      const std::string& targetName = obj->GetTarget()->GetName();
+      cmXCodeScheme schm(obj, testables[targetName],
+                         this->CurrentConfigurationTypes, this->XcodeVersion);
       schm.WriteXCodeSharedScheme(xcProjDir,
                                   this->RelativeToSource(xcProjDir.c_str()));
     }
@@ -3358,12 +3341,13 @@ void cmGlobalXCodeGenerator::WriteXCodePBXProj(std::ostream& fout,
   cmXCodeObject::Indent(1, fout);
   fout << "};\n";
   cmXCodeObject::Indent(1, fout);
-  if (this->XcodeVersion >= 32)
+  if (this->XcodeVersion >= 32) {
     fout << "objectVersion = 46;\n";
-  else if (this->XcodeVersion >= 31)
+  } else if (this->XcodeVersion >= 31) {
     fout << "objectVersion = 45;\n";
-  else
+  } else {
     fout << "objectVersion = 44;\n";
+  }
   cmXCode21Object::PrintList(this->XCodeObjects, fout);
   cmXCodeObject::Indent(1, fout);
   fout << "rootObject = " << this->RootObject->GetId()
@@ -3483,11 +3467,10 @@ void cmGlobalXCodeGenerator::AppendDefines(
 {
   // GCC_PREPROCESSOR_DEFINITIONS is a space-separated list of definitions.
   std::string def;
-  for (std::vector<std::string>::const_iterator di = defines.begin();
-       di != defines.end(); ++di) {
+  for (auto const& define : defines) {
     // Start with -D if requested.
     def = dflag ? "-D" : "";
-    def += *di;
+    def += define;
 
     // Append the flag with needed escapes.
     std::string tmp;
@@ -3572,7 +3555,7 @@ bool cmGlobalXCodeGenerator::HasKnownObjectFileLocation(
   std::string* reason) const
 {
   if (this->ObjectDirArch.find('$') != std::string::npos) {
-    if (reason != CM_NULLPTR) {
+    if (reason != nullptr) {
       *reason = " under Xcode with multiple architectures";
     }
     return false;
diff --git a/Source/cmGlobalXCodeGenerator.h b/Source/cmGlobalXCodeGenerator.h
index e69793bcc..e9ca91ce4 100644
--- a/Source/cmGlobalXCodeGenerator.h
+++ b/Source/cmGlobalXCodeGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmGlobalXCodeGenerator_h
 #define cmGlobalXCodeGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <map>
@@ -37,7 +37,7 @@ public:
   static cmGlobalGeneratorFactory* NewFactory();
 
   ///! Get the name for the generator.
-  std::string GetName() const CM_OVERRIDE
+  std::string GetName() const override
   {
     return cmGlobalXCodeGenerator::GetActualName();
   }
@@ -47,14 +47,14 @@ public:
   static void GetDocumentation(cmDocumentationEntry& entry);
 
   ///! Create a local generator appropriate to this Global Generator
-  cmLocalGenerator* CreateLocalGenerator(cmMakefile* mf) CM_OVERRIDE;
+  cmLocalGenerator* CreateLocalGenerator(cmMakefile* mf) override;
 
   /**
    * Try to determine system information such as shared library
    * extension, pthreads, byte order etc.
    */
   void EnableLanguage(std::vector<std::string> const& languages, cmMakefile*,
-                      bool optional) CM_OVERRIDE;
+                      bool optional) override;
   /**
    * Try running cmake and building a file. This is used for dynalically
    * loaded commands, not as part of the usual build process.
@@ -66,47 +66,48 @@ public:
                             const std::string& targetName,
                             const std::string& config, bool fast, bool verbose,
                             std::vector<std::string> const& makeOptions =
-                              std::vector<std::string>()) CM_OVERRIDE;
+                              std::vector<std::string>()) override;
 
   /** Append the subdirectory for the given configuration.  */
   void AppendDirectoryForConfig(const std::string& prefix,
                                 const std::string& config,
                                 const std::string& suffix,
-                                std::string& dir) CM_OVERRIDE;
+                                std::string& dir) override;
 
-  bool FindMakeProgram(cmMakefile*) CM_OVERRIDE;
+  bool FindMakeProgram(cmMakefile*) override;
 
   ///! What is the configurations directory variable called?
-  const char* GetCMakeCFGIntDir() const CM_OVERRIDE;
+  const char* GetCMakeCFGIntDir() const override;
   ///! expand CFGIntDir
   std::string ExpandCFGIntDir(const std::string& str,
-                              const std::string& config) const CM_OVERRIDE;
+                              const std::string& config) const override;
 
   void SetCurrentLocalGenerator(cmLocalGenerator*);
 
   /** Return true if the generated build tree may contain multiple builds.
       i.e. "Can I build Debug and Release in the same tree?" */
-  bool IsMultiConfig() const CM_OVERRIDE;
+  bool IsMultiConfig() const override;
 
-  bool HasKnownObjectFileLocation(std::string* reason) const CM_OVERRIDE;
+  bool HasKnownObjectFileLocation(std::string* reason) const override;
 
-  bool IsIPOSupported() const CM_OVERRIDE { return true; }
+  bool IsIPOSupported() const override { return true; }
 
-  bool UseEffectivePlatformName(cmMakefile* mf) const CM_OVERRIDE;
+  bool UseEffectivePlatformName(cmMakefile* mf) const override;
 
-  bool ShouldStripResourcePath(cmMakefile*) const CM_OVERRIDE;
+  bool ShouldStripResourcePath(cmMakefile*) const override;
 
-  bool SetGeneratorToolset(std::string const& ts, cmMakefile* mf) CM_OVERRIDE;
+  bool SetGeneratorToolset(std::string const& ts, cmMakefile* mf) override;
   void AppendFlag(std::string& flags, std::string const& flag);
 
 protected:
-  void AddExtraIDETargets() CM_OVERRIDE;
-  void Generate() CM_OVERRIDE;
+  void AddExtraIDETargets() override;
+  void Generate() override;
 
 private:
   cmXCodeObject* CreateOrGetPBXGroup(cmGeneratorTarget* gtgt,
                                      cmSourceGroup* sg);
-  cmXCodeObject* CreatePBXGroup(cmXCodeObject* parent, std::string name);
+  cmXCodeObject* CreatePBXGroup(cmXCodeObject* parent,
+                                const std::string& name);
   bool CreateGroups(std::vector<cmLocalGenerator*>& generators);
   std::string XCodeEscapePath(const std::string& p);
   std::string RelativeToSource(const char* p);
@@ -144,7 +145,7 @@ private:
   cmXCodeObject* CreateFlatClone(cmXCodeObject*);
   cmXCodeObject* CreateXCodeTarget(cmGeneratorTarget* gtgt,
                                    cmXCodeObject* buildPhases);
-  void ForceLinkerLanguages() CM_OVERRIDE;
+  void ForceLinkerLanguages() override;
   void ForceLinkerLanguage(cmGeneratorTarget* gtgt);
   const char* GetTargetLinkFlagsVar(const cmGeneratorTarget* target) const;
   const char* GetTargetFileType(cmGeneratorTarget* target);
@@ -219,11 +220,11 @@ private:
                      std::vector<std::string> const& defines,
                      bool dflag = false);
 
-  void ComputeTargetObjectDirectory(cmGeneratorTarget* gt) const CM_OVERRIDE;
+  void ComputeTargetObjectDirectory(cmGeneratorTarget* gt) const override;
 
 protected:
-  const char* GetInstallTargetName() const CM_OVERRIDE { return "install"; }
-  const char* GetPackageTargetName() const CM_OVERRIDE { return "package"; }
+  const char* GetInstallTargetName() const override { return "install"; }
+  const char* GetPackageTargetName() const override { return "package"; }
 
   unsigned int XcodeVersion;
   std::string VersionString;
@@ -238,7 +239,7 @@ private:
   bool XcodeBuildCommandInitialized;
 
   void PrintCompilerAdvice(std::ostream&, std::string const&,
-                           const char*) const CM_OVERRIDE
+                           const char*) const override
   {
   }
 
diff --git a/Source/cmGraphVizWriter.cxx b/Source/cmGraphVizWriter.cxx
index 7e953cef1..dd2993d70 100644
--- a/Source/cmGraphVizWriter.cxx
+++ b/Source/cmGraphVizWriter.cxx
@@ -2,8 +2,9 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmGraphVizWriter.h"
 
-#include "cmConfigure.h"
+#include <cstddef>
 #include <iostream>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <utility>
 
@@ -15,10 +16,20 @@
 #include "cmStateSnapshot.h"
 #include "cmSystemTools.h"
 #include "cmTarget.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
-static const char* getShapeForTarget(const cmGeneratorTarget* target)
+namespace {
+enum LinkLibraryScopeType
+{
+  LLT_SCOPE_PUBLIC,
+  LLT_SCOPE_PRIVATE,
+  LLT_SCOPE_INTERFACE
+};
+
+const char* const GRAPHVIZ_PRIVATE_EDEGE_STYLE = "dashed";
+const char* const GRAPHVIZ_INTERFACE_EDEGE_STYLE = "dotted";
+
+const char* getShapeForTarget(const cmGeneratorTarget* target)
 {
   if (!target) {
     return "ellipse";
@@ -40,6 +51,76 @@ static const char* getShapeForTarget(const cmGeneratorTarget* target)
   return "box";
 }
 
+std::map<std::string, LinkLibraryScopeType> getScopedLinkLibrariesFromTarget(
+  cmTarget* Target)
+{
+  char sep = ';';
+  std::map<std::string, LinkLibraryScopeType> tokens;
+  size_t start = 0, end = 0;
+
+  const char* pInterfaceLinkLibraries =
+    Target->GetProperty("INTERFACE_LINK_LIBRARIES");
+  const char* pLinkLibraries = Target->GetProperty("LINK_LIBRARIES");
+
+  if (!pInterfaceLinkLibraries && !pLinkLibraries) {
+    return tokens; // target is not linked against any other libraries
+  }
+
+  // make sure we don't touch a null-ptr
+  auto interfaceLinkLibraries =
+    std::string(pInterfaceLinkLibraries ? pInterfaceLinkLibraries : "");
+  auto linkLibraries = std::string(pLinkLibraries ? pLinkLibraries : "");
+
+  // first extract interfaceLinkLibraries
+  while (start < interfaceLinkLibraries.length()) {
+
+    if ((end = interfaceLinkLibraries.find(sep, start)) == std::string::npos) {
+      end = interfaceLinkLibraries.length();
+    }
+
+    std::string element = interfaceLinkLibraries.substr(start, end - start);
+    if (std::string::npos == element.find("$<LINK_ONLY:", 0)) {
+      // we assume first, that this library is an interface library.
+      // if we find it again in the linklibraries property, we promote it to an
+      // public library.
+      tokens[element] = LLT_SCOPE_INTERFACE;
+    } else {
+      // this is an private linked static library.
+      // we take care of this case in the second iterator.
+    }
+    start = end + 1;
+  }
+
+  // second extract linkLibraries
+  start = 0;
+  while (start < linkLibraries.length()) {
+
+    if ((end = linkLibraries.find(sep, start)) == std::string::npos) {
+      end = linkLibraries.length();
+    }
+
+    std::string element = linkLibraries.substr(start, end - start);
+
+    if (tokens.find(element) == tokens.end()) {
+      // this library is not found in interfaceLinkLibraries but in
+      // linkLibraries.
+      // this results in a private linked library.
+      tokens[element] = LLT_SCOPE_PRIVATE;
+    } else if (LLT_SCOPE_INTERFACE == tokens[element]) {
+      // this library is found in interfaceLinkLibraries and linkLibraries.
+      // this results in a public linked library.
+      tokens[element] = LLT_SCOPE_PUBLIC;
+    } else {
+      // private and public linked libraries should not be changed anymore.
+    }
+
+    start = end + 1;
+  }
+
+  return tokens;
+}
+}
+
 cmGraphVizWriter::cmGraphVizWriter(
   const std::vector<cmLocalGenerator*>& localGenerators)
   : GraphType("digraph")
@@ -66,8 +147,8 @@ void cmGraphVizWriter::ReadSettings(const char* settingsFileName,
   cm.SetHomeOutputDirectory("");
   cm.GetCurrentSnapshot().SetDefaultDefinitions();
   cmGlobalGenerator ggi(&cm);
-  CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(&ggi, cm.GetCurrentSnapshot()));
-  CM_AUTO_PTR<cmLocalGenerator> lg(ggi.CreateLocalGenerator(mf.get()));
+  cmMakefile mf(&ggi, cm.GetCurrentSnapshot());
+  std::unique_ptr<cmLocalGenerator> lg(ggi.CreateLocalGenerator(&mf));
 
   const char* inFileName = settingsFileName;
 
@@ -78,7 +159,7 @@ void cmGraphVizWriter::ReadSettings(const char* settingsFileName,
     }
   }
 
-  if (!mf->ReadListFile(inFileName)) {
+  if (!mf.ReadListFile(inFileName)) {
     cmSystemTools::Error("Problem opening GraphViz options file: ",
                          inFileName);
     return;
@@ -88,7 +169,7 @@ void cmGraphVizWriter::ReadSettings(const char* settingsFileName,
 
 #define __set_if_set(var, cmakeDefinition)                                    \
   {                                                                           \
-    const char* value = mf->GetDefinition(cmakeDefinition);                   \
+    const char* value = mf.GetDefinition(cmakeDefinition);                    \
     if (value) {                                                              \
       (var) = value;                                                          \
     }                                                                         \
@@ -101,9 +182,9 @@ void cmGraphVizWriter::ReadSettings(const char* settingsFileName,
 
 #define __set_bool_if_set(var, cmakeDefinition)                               \
   {                                                                           \
-    const char* value = mf->GetDefinition(cmakeDefinition);                   \
+    const char* value = mf.GetDefinition(cmakeDefinition);                    \
     if (value) {                                                              \
-      (var) = mf->IsOn(cmakeDefinition);                                      \
+      (var) = mf.IsOn(cmakeDefinition);                                       \
     }                                                                         \
   }
 
@@ -123,10 +204,7 @@ void cmGraphVizWriter::ReadSettings(const char* settingsFileName,
     std::vector<std::string> ignoreTargetsRegExVector;
     cmSystemTools::ExpandListArgument(ignoreTargetsRegexes,
                                       ignoreTargetsRegExVector);
-    for (std::vector<std::string>::const_iterator itvIt =
-           ignoreTargetsRegExVector.begin();
-         itvIt != ignoreTargetsRegExVector.end(); ++itvIt) {
-      std::string currentRegexString(*itvIt);
+    for (std::string const& currentRegexString : ignoreTargetsRegExVector) {
       cmsys::RegularExpression currentRegex;
       if (!currentRegex.compile(currentRegexString.c_str())) {
         std::cerr << "Could not compile bad regex \"" << currentRegexString
@@ -147,20 +225,18 @@ void cmGraphVizWriter::WriteTargetDependersFiles(const char* fileName)
 
   this->CollectTargetsAndLibs();
 
-  for (std::map<std::string, const cmGeneratorTarget*>::const_iterator ptrIt =
-         this->TargetPtrs.begin();
-       ptrIt != this->TargetPtrs.end(); ++ptrIt) {
-    if (ptrIt->second == CM_NULLPTR) {
+  for (auto const& ptr : this->TargetPtrs) {
+    if (ptr.second == nullptr) {
       continue;
     }
 
-    if (!this->GenerateForTargetType(ptrIt->second->GetType())) {
+    if (!this->GenerateForTargetType(ptr.second->GetType())) {
       continue;
     }
 
     std::string currentFilename = fileName;
     currentFilename += ".";
-    currentFilename += ptrIt->first;
+    currentFilename += ptr.first;
     currentFilename += ".dependers";
 
     cmGeneratedFileStream str(currentFilename.c_str());
@@ -174,7 +250,7 @@ void cmGraphVizWriter::WriteTargetDependersFiles(const char* fileName)
     std::cout << "Writing " << currentFilename << "..." << std::endl;
     this->WriteHeader(str);
 
-    this->WriteDependerConnections(ptrIt->first, insertedNodes,
+    this->WriteDependerConnections(ptr.first, insertedNodes,
                                    insertedConnections, str);
 
     this->WriteFooter(str);
@@ -191,14 +267,12 @@ void cmGraphVizWriter::WritePerTargetFiles(const char* fileName)
 
   this->CollectTargetsAndLibs();
 
-  for (std::map<std::string, const cmGeneratorTarget*>::const_iterator ptrIt =
-         this->TargetPtrs.begin();
-       ptrIt != this->TargetPtrs.end(); ++ptrIt) {
-    if (ptrIt->second == CM_NULLPTR) {
+  for (auto const& ptr : this->TargetPtrs) {
+    if (ptr.second == nullptr) {
       continue;
     }
 
-    if (!this->GenerateForTargetType(ptrIt->second->GetType())) {
+    if (!this->GenerateForTargetType(ptr.second->GetType())) {
       continue;
     }
 
@@ -207,7 +281,7 @@ void cmGraphVizWriter::WritePerTargetFiles(const char* fileName)
 
     std::string currentFilename = fileName;
     currentFilename += ".";
-    currentFilename += ptrIt->first;
+    currentFilename += ptr.first;
     cmGeneratedFileStream str(currentFilename.c_str());
     if (!str) {
       return;
@@ -216,8 +290,7 @@ void cmGraphVizWriter::WritePerTargetFiles(const char* fileName)
     std::cout << "Writing " << currentFilename << "..." << std::endl;
     this->WriteHeader(str);
 
-    this->WriteConnections(ptrIt->first, insertedNodes, insertedConnections,
-                           str);
+    this->WriteConnections(ptr.first, insertedNodes, insertedConnections, str);
     this->WriteFooter(str);
   }
 }
@@ -237,19 +310,16 @@ void cmGraphVizWriter::WriteGlobalFile(const char* fileName)
   std::set<std::string> insertedConnections;
   std::set<std::string> insertedNodes;
 
-  for (std::map<std::string, const cmGeneratorTarget*>::const_iterator ptrIt =
-         this->TargetPtrs.begin();
-       ptrIt != this->TargetPtrs.end(); ++ptrIt) {
-    if (ptrIt->second == CM_NULLPTR) {
+  for (auto const& ptr : this->TargetPtrs) {
+    if (ptr.second == nullptr) {
       continue;
     }
 
-    if (!this->GenerateForTargetType(ptrIt->second->GetType())) {
+    if (!this->GenerateForTargetType(ptr.second->GetType())) {
       continue;
     }
 
-    this->WriteConnections(ptrIt->first, insertedNodes, insertedConnections,
-                           str);
+    this->WriteConnections(ptr.first, insertedNodes, insertedConnections, str);
   }
   this->WriteFooter(str);
 }
@@ -279,19 +349,17 @@ void cmGraphVizWriter::WriteConnections(
 
   this->WriteNode(targetName, targetPtrIt->second, insertedNodes, str);
 
-  if (targetPtrIt->second == CM_NULLPTR) // it's an external library
+  if (targetPtrIt->second == nullptr) // it's an external library
   {
     return;
   }
 
   std::string myNodeName = this->TargetNamesNodes.find(targetName)->second;
+  std::map<std::string, LinkLibraryScopeType> ll =
+    getScopedLinkLibrariesFromTarget(targetPtrIt->second->Target);
 
-  const cmTarget::LinkLibraryVectorType* ll =
-    &(targetPtrIt->second->Target->GetOriginalLinkLibraries());
-
-  for (cmTarget::LinkLibraryVectorType::const_iterator llit = ll->begin();
-       llit != ll->end(); ++llit) {
-    const char* libName = llit->first.c_str();
+  for (auto const& llit : ll) {
+    const char* libName = llit.first.c_str();
     std::map<std::string, std::string>::const_iterator libNameIt =
       this->TargetNamesNodes.find(libName);
 
@@ -310,6 +378,18 @@ void cmGraphVizWriter::WriteConnections(
                       insertedNodes, str);
 
       str << "    \"" << myNodeName << "\" -> \"" << libNameIt->second << "\"";
+
+      switch (llit.second) {
+        case LLT_SCOPE_PRIVATE:
+          str << "[style = " << GRAPHVIZ_PRIVATE_EDEGE_STYLE << "]";
+          break;
+        case LLT_SCOPE_INTERFACE:
+          str << "[style = " << GRAPHVIZ_INTERFACE_EDEGE_STYLE << "]";
+          break;
+        default:
+          break;
+      }
+
       str << " // " << targetName << " -> " << libName << std::endl;
       this->WriteConnections(libName, insertedNodes, insertedConnections, str);
     }
@@ -330,7 +410,7 @@ void cmGraphVizWriter::WriteDependerConnections(
 
   this->WriteNode(targetName, targetPtrIt->second, insertedNodes, str);
 
-  if (targetPtrIt->second == CM_NULLPTR) // it's an external library
+  if (targetPtrIt->second == nullptr) // it's an external library
   {
     return;
   }
@@ -338,29 +418,26 @@ void cmGraphVizWriter::WriteDependerConnections(
   std::string myNodeName = this->TargetNamesNodes.find(targetName)->second;
 
   // now search who links against me
-  for (std::map<std::string, const cmGeneratorTarget*>::const_iterator
-         dependerIt = this->TargetPtrs.begin();
-       dependerIt != this->TargetPtrs.end(); ++dependerIt) {
-    if (dependerIt->second == CM_NULLPTR) {
+  for (auto const& tptr : this->TargetPtrs) {
+    if (tptr.second == nullptr) {
       continue;
     }
 
-    if (!this->GenerateForTargetType(dependerIt->second->GetType())) {
+    if (!this->GenerateForTargetType(tptr.second->GetType())) {
       continue;
     }
 
     // Now we have a target, check whether it links against targetName.
     // If so, draw a connection, and then continue with dependers on that one.
     const cmTarget::LinkLibraryVectorType* ll =
-      &(dependerIt->second->Target->GetOriginalLinkLibraries());
+      &(tptr.second->Target->GetOriginalLinkLibraries());
 
-    for (cmTarget::LinkLibraryVectorType::const_iterator llit = ll->begin();
-         llit != ll->end(); ++llit) {
-      std::string libName = llit->first;
+    for (auto const& llit : *ll) {
+      std::string libName = llit.first;
       if (libName == targetName) {
         // So this target links against targetName.
         std::map<std::string, std::string>::const_iterator dependerNodeNameIt =
-          this->TargetNamesNodes.find(dependerIt->first);
+          this->TargetNamesNodes.find(tptr.first);
 
         if (dependerNodeNameIt != this->TargetNamesNodes.end()) {
           std::string connectionName = dependerNodeNameIt->second;
@@ -370,14 +447,12 @@ void cmGraphVizWriter::WriteDependerConnections(
           if (insertedConnections.find(connectionName) ==
               insertedConnections.end()) {
             insertedConnections.insert(connectionName);
-            this->WriteNode(dependerIt->first, dependerIt->second,
-                            insertedNodes, str);
+            this->WriteNode(tptr.first, tptr.second, insertedNodes, str);
 
             str << "    \"" << dependerNodeNameIt->second << "\" -> \""
                 << myNodeName << "\"";
-            str << " // " << targetName << " -> " << dependerIt->first
-                << std::endl;
-            this->WriteDependerConnections(dependerIt->first, insertedNodes,
+            str << " // " << targetName << " -> " << tptr.first << std::endl;
+            this->WriteDependerConnections(tptr.first, insertedNodes,
                                            insertedConnections, str);
           }
         }
@@ -417,13 +492,10 @@ int cmGraphVizWriter::CollectAllTargets()
 {
   int cnt = 0;
   // First pass get the list of all cmake targets
-  for (std::vector<cmLocalGenerator*>::const_iterator lit =
-         this->LocalGenerators.begin();
-       lit != this->LocalGenerators.end(); ++lit) {
-    std::vector<cmGeneratorTarget*> targets = (*lit)->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::const_iterator it = targets.begin();
-         it != targets.end(); ++it) {
-      const char* realTargetName = (*it)->GetName().c_str();
+  for (cmLocalGenerator* lg : this->LocalGenerators) {
+    const std::vector<cmGeneratorTarget*>& targets = lg->GetGeneratorTargets();
+    for (cmGeneratorTarget* target : targets) {
+      const char* realTargetName = target->GetName().c_str();
       if (this->IgnoreThisTarget(realTargetName)) {
         // Skip ignored targets
         continue;
@@ -432,7 +504,7 @@ int cmGraphVizWriter::CollectAllTargets()
       std::ostringstream ostr;
       ostr << this->GraphNodePrefix << cnt++;
       this->TargetNamesNodes[realTargetName] = ostr.str();
-      this->TargetPtrs[realTargetName] = *it;
+      this->TargetPtrs[realTargetName] = target;
     }
   }
 
@@ -442,22 +514,18 @@ int cmGraphVizWriter::CollectAllTargets()
 int cmGraphVizWriter::CollectAllExternalLibs(int cnt)
 {
   // Ok, now find all the stuff we link to that is not in cmake
-  for (std::vector<cmLocalGenerator*>::const_iterator lit =
-         this->LocalGenerators.begin();
-       lit != this->LocalGenerators.end(); ++lit) {
-    std::vector<cmGeneratorTarget*> targets = (*lit)->GetGeneratorTargets();
-    for (std::vector<cmGeneratorTarget*>::const_iterator it = targets.begin();
-         it != targets.end(); ++it) {
-      const char* realTargetName = (*it)->GetName().c_str();
+  for (cmLocalGenerator* lg : this->LocalGenerators) {
+    const std::vector<cmGeneratorTarget*>& targets = lg->GetGeneratorTargets();
+    for (cmGeneratorTarget* target : targets) {
+      const char* realTargetName = target->GetName().c_str();
       if (this->IgnoreThisTarget(realTargetName)) {
         // Skip ignored targets
         continue;
       }
       const cmTarget::LinkLibraryVectorType* ll =
-        &((*it)->Target->GetOriginalLinkLibraries());
-      for (cmTarget::LinkLibraryVectorType::const_iterator llit = ll->begin();
-           llit != ll->end(); ++llit) {
-        const char* libName = llit->first.c_str();
+        &(target->Target->GetOriginalLinkLibraries());
+      for (auto const& llit : *ll) {
+        const char* libName = llit.first.c_str();
         if (this->IgnoreThisTarget(libName)) {
           // Skip ignored targets
           continue;
@@ -469,7 +537,7 @@ int cmGraphVizWriter::CollectAllExternalLibs(int cnt)
           std::ostringstream ostr;
           ostr << this->GraphNodePrefix << cnt++;
           this->TargetNamesNodes[libName] = ostr.str();
-          this->TargetPtrs[libName] = CM_NULLPTR;
+          this->TargetPtrs[libName] = nullptr;
           // str << "    \"" << ostr << "\" [ label=\"" << libName
           // <<  "\" shape=\"ellipse\"];" << std::endl;
         }
@@ -481,10 +549,7 @@ int cmGraphVizWriter::CollectAllExternalLibs(int cnt)
 
 bool cmGraphVizWriter::IgnoreThisTarget(const std::string& name)
 {
-  for (std::vector<cmsys::RegularExpression>::iterator itvIt =
-         this->TargetsToIgnoreRegex.begin();
-       itvIt != this->TargetsToIgnoreRegex.end(); ++itvIt) {
-    cmsys::RegularExpression& regEx = *itvIt;
+  for (cmsys::RegularExpression& regEx : this->TargetsToIgnoreRegex) {
     if (regEx.is_valid()) {
       if (regEx.find(name)) {
         return true;
diff --git a/Source/cmHexFileConverter.cxx b/Source/cmHexFileConverter.cxx
index 78dceb794..8deb8c183 100644
--- a/Source/cmHexFileConverter.cxx
+++ b/Source/cmHexFileConverter.cxx
@@ -2,7 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmHexFileConverter.h"
 
-#include "cmConfigure.h"
 #include <stdio.h>
 #include <string.h>
 
@@ -22,7 +21,7 @@ static bool cm_IsHexChar(char c)
 
 static unsigned int ChompStrlen(const char* line)
 {
-  if (line == CM_NULLPTR) {
+  if (line == nullptr) {
     return 0;
   }
   unsigned int length = static_cast<unsigned int>(strlen(line));
@@ -139,7 +138,7 @@ cmHexFileConverter::FileType cmHexFileConverter::DetermineFileType(
 {
   char buf[1024];
   FILE* inFile = cmsys::SystemTools::Fopen(inFileName, "rb");
-  if (inFile == CM_NULLPTR) {
+  if (inFile == nullptr) {
     return Binary;
   }
 
@@ -188,11 +187,11 @@ bool cmHexFileConverter::TryConvert(const char* inFileName,
   // try to open the file
   FILE* inFile = cmsys::SystemTools::Fopen(inFileName, "rb");
   FILE* outFile = cmsys::SystemTools::Fopen(outFileName, "wb");
-  if ((inFile == CM_NULLPTR) || (outFile == CM_NULLPTR)) {
-    if (inFile != CM_NULLPTR) {
+  if ((inFile == nullptr) || (outFile == nullptr)) {
+    if (inFile != nullptr) {
       fclose(inFile);
     }
-    if (outFile != CM_NULLPTR) {
+    if (outFile != nullptr) {
       fclose(outFile);
     }
     return false;
@@ -201,7 +200,7 @@ bool cmHexFileConverter::TryConvert(const char* inFileName,
   // convert them line by line
   bool success = false;
   char buf[1024];
-  while (fgets(buf, 1024, inFile) != CM_NULLPTR) {
+  while (fgets(buf, 1024, inFile) != nullptr) {
     if (type == MotorolaSrec) {
       success = ConvertMotorolaSrecLine(buf, outFile);
     } else if (type == IntelHex) {
diff --git a/Source/cmHexFileConverter.h b/Source/cmHexFileConverter.h
index 1050bc1b4..25278e4a3 100644
--- a/Source/cmHexFileConverter.h
+++ b/Source/cmHexFileConverter.h
@@ -3,6 +3,8 @@
 #ifndef cmHexFileConverter_h
 #define cmHexFileConverter_h
 
+#include "cmConfigure.h" // IWYU pragma: keep
+
 /** \class cmHexFileConverter
  * \brief Can detects Intel Hex and Motorola S-record files and convert them
  *        to binary files.
diff --git a/Source/cmIDEOptions.h b/Source/cmIDEOptions.h
index 19e96bd44..af0312874 100644
--- a/Source/cmIDEOptions.h
+++ b/Source/cmIDEOptions.h
@@ -3,7 +3,7 @@
 #ifndef cmIDEOptions_h
 #define cmIDEOptions_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <map>
 #include <string>
diff --git a/Source/cmIfCommand.cxx b/Source/cmIfCommand.cxx
index 0972664a2..4926f22d0 100644
--- a/Source/cmIfCommand.cxx
+++ b/Source/cmIfCommand.cxx
@@ -8,17 +8,17 @@
 #include "cmMakefile.h"
 #include "cmOutputConverter.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
+#include <memory> // IWYU pragma: keep
+
 static std::string cmIfCommandError(
   std::vector<cmExpandedCommandArgument> const& args)
 {
   std::string err = "given arguments:\n ";
-  for (std::vector<cmExpandedCommandArgument>::const_iterator i = args.begin();
-       i != args.end(); ++i) {
+  for (cmExpandedCommandArgument const& i : args) {
     err += " ";
-    err += cmOutputConverter::EscapeForCMake(i->GetValue());
+    err += cmOutputConverter::EscapeForCMake(i.GetValue());
   }
   err += "\n";
   return err;
@@ -37,7 +37,8 @@ bool cmIfFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
     // if this is the endif for this if statement, then start executing
     if (!this->ScopeDepth) {
       // Remove the function blocker for this scope or bail.
-      CM_AUTO_PTR<cmFunctionBlocker> fb(mf.RemoveFunctionBlocker(this, lff));
+      std::unique_ptr<cmFunctionBlocker> fb(
+        mf.RemoveFunctionBlocker(this, lff));
       if (!fb.get()) {
         return false;
       }
@@ -45,21 +46,20 @@ bool cmIfFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
       // execute the functions for the true parts of the if statement
       cmExecutionStatus status;
       int scopeDepth = 0;
-      for (unsigned int c = 0; c < this->Functions.size(); ++c) {
+      for (cmListFileFunction const& func : this->Functions) {
         // keep track of scope depth
-        if (!cmSystemTools::Strucmp(this->Functions[c].Name.c_str(), "if")) {
+        if (!cmSystemTools::Strucmp(func.Name.c_str(), "if")) {
           scopeDepth++;
         }
-        if (!cmSystemTools::Strucmp(this->Functions[c].Name.c_str(),
-                                    "endif")) {
+        if (!cmSystemTools::Strucmp(func.Name.c_str(), "endif")) {
           scopeDepth--;
         }
         // watch for our state change
         if (scopeDepth == 0 &&
-            !cmSystemTools::Strucmp(this->Functions[c].Name.c_str(), "else")) {
+            !cmSystemTools::Strucmp(func.Name.c_str(), "else")) {
 
           if (this->ElseSeen) {
-            cmListFileBacktrace bt = mf.GetBacktrace(this->Functions[c]);
+            cmListFileBacktrace bt = mf.GetBacktrace(func);
             mf.GetCMakeInstance()->IssueMessage(
               cmake::FATAL_ERROR,
               "A duplicate ELSE command was found inside an IF block.", bt);
@@ -74,13 +74,12 @@ bool cmIfFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
           // if trace is enabled, print a (trivially) evaluated "else"
           // statement
           if (!this->IsBlocking && mf.GetCMakeInstance()->GetTrace()) {
-            mf.PrintCommandTrace(this->Functions[c]);
+            mf.PrintCommandTrace(func);
           }
         } else if (scopeDepth == 0 &&
-                   !cmSystemTools::Strucmp(this->Functions[c].Name.c_str(),
-                                           "elseif")) {
+                   !cmSystemTools::Strucmp(func.Name.c_str(), "elseif")) {
           if (this->ElseSeen) {
-            cmListFileBacktrace bt = mf.GetBacktrace(this->Functions[c]);
+            cmListFileBacktrace bt = mf.GetBacktrace(func);
             mf.GetCMakeInstance()->IssueMessage(
               cmake::FATAL_ERROR,
               "An ELSEIF command was found after an ELSE command.", bt);
@@ -93,23 +92,22 @@ bool cmIfFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
           } else {
             // if trace is enabled, print the evaluated "elseif" statement
             if (mf.GetCMakeInstance()->GetTrace()) {
-              mf.PrintCommandTrace(this->Functions[c]);
+              mf.PrintCommandTrace(func);
             }
 
             std::string errorString;
 
             std::vector<cmExpandedCommandArgument> expandedArguments;
-            mf.ExpandArguments(this->Functions[c].Arguments,
-                               expandedArguments);
+            mf.ExpandArguments(func.Arguments, expandedArguments);
 
             cmake::MessageType messType;
 
             cmListFileContext conditionContext =
               cmListFileContext::FromCommandContext(
-                this->Functions[c], this->GetStartingContext().FilePath);
+                func, this->GetStartingContext().FilePath);
 
-            cmConditionEvaluator conditionEvaluator(
-              mf, conditionContext, mf.GetBacktrace(this->Functions[c]));
+            cmConditionEvaluator conditionEvaluator(mf, conditionContext,
+                                                    mf.GetBacktrace(func));
 
             bool isTrue = conditionEvaluator.IsTrue(expandedArguments,
                                                     errorString, messType);
@@ -117,7 +115,7 @@ bool cmIfFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
             if (!errorString.empty()) {
               std::string err = cmIfCommandError(expandedArguments);
               err += errorString;
-              cmListFileBacktrace bt = mf.GetBacktrace(this->Functions[c]);
+              cmListFileBacktrace bt = mf.GetBacktrace(func);
               mf.GetCMakeInstance()->IssueMessage(messType, err, bt);
               if (messType == cmake::FATAL_ERROR) {
                 cmSystemTools::SetFatalErrorOccured();
@@ -135,7 +133,7 @@ bool cmIfFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
         // should we execute?
         else if (!this->IsBlocking) {
           status.Clear();
-          mf.ExecuteCommand(this->Functions[c], status);
+          mf.ExecuteCommand(func, status);
           if (status.GetReturnInvoked()) {
             inStatus.SetReturnInvoked();
             return true;
diff --git a/Source/cmIfCommand.h b/Source/cmIfCommand.h
index 5877a7d12..e3d30ddbd 100644
--- a/Source/cmIfCommand.h
+++ b/Source/cmIfCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmIfCommand_h
 #define cmIfCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -25,10 +25,10 @@ public:
     this->ElseSeen = false;
     this->ScopeDepth = 0;
   }
-  ~cmIfFunctionBlocker() CM_OVERRIDE {}
+  ~cmIfFunctionBlocker() override {}
   bool IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile& mf,
-                         cmExecutionStatus&) CM_OVERRIDE;
-  bool ShouldRemove(const cmListFileFunction& lff, cmMakefile& mf) CM_OVERRIDE;
+                         cmExecutionStatus&) override;
+  bool ShouldRemove(const cmListFileFunction& lff, cmMakefile& mf) override;
 
   std::vector<cmListFileArgument> Args;
   std::vector<cmListFileFunction> Functions;
@@ -45,21 +45,21 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmIfCommand; }
+  cmCommand* Clone() override { return new cmIfCommand; }
 
   /**
    * This overrides the default InvokeInitialPass implementation.
    * It records the arguments before expansion.
    */
   bool InvokeInitialPass(const std::vector<cmListFileArgument>& args,
-                         cmExecutionStatus&) CM_OVERRIDE;
+                         cmExecutionStatus&) override;
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const&,
-                   cmExecutionStatus&) CM_OVERRIDE
+                   cmExecutionStatus&) override
   {
     return false;
   }
diff --git a/Source/cmIncludeCommand.cxx b/Source/cmIncludeCommand.cxx
index 12e0c9ab3..cd4d85030 100644
--- a/Source/cmIncludeCommand.cxx
+++ b/Source/cmIncludeCommand.cxx
@@ -78,7 +78,7 @@ bool cmIncludeCommand::InitialPass(std::vector<std::string> const& args,
 
   cmGlobalGenerator* gg = this->Makefile->GetGlobalGenerator();
   if (gg->IsExportedTargetsFile(fname_abs)) {
-    const char* modal = CM_NULLPTR;
+    const char* modal = nullptr;
     std::ostringstream e;
     cmake::MessageType messageType = cmake::AUTHOR_WARNING;
 
diff --git a/Source/cmIncludeCommand.h b/Source/cmIncludeCommand.h
index 16dda0ef5..3b843b206 100644
--- a/Source/cmIncludeCommand.h
+++ b/Source/cmIncludeCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmIncludeCommand_h
 #define cmIncludeCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmIncludeCommand; }
+  cmCommand* Clone() override { return new cmIncludeCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmIncludeDirectoryCommand.cxx b/Source/cmIncludeDirectoryCommand.cxx
index b81f7cb2d..4c3060797 100644
--- a/Source/cmIncludeDirectoryCommand.cxx
+++ b/Source/cmIncludeDirectoryCommand.cxx
@@ -116,7 +116,7 @@ void cmIncludeDirectoryCommand::NormalizeInclude(std::string& inc)
   if ((b != std::string::npos) && (e != std::string::npos)) {
     inc.assign(inc, b, 1 + e - b); // copy the remaining substring
   } else {
-    inc = "";
+    inc.clear();
     return;
   }
 
diff --git a/Source/cmIncludeDirectoryCommand.h b/Source/cmIncludeDirectoryCommand.h
index 12de698cb..01d98dbc0 100644
--- a/Source/cmIncludeDirectoryCommand.h
+++ b/Source/cmIncludeDirectoryCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmIncludeDirectoryCommand_h
 #define cmIncludeDirectoryCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmIncludeDirectoryCommand; }
+  cmCommand* Clone() override { return new cmIncludeDirectoryCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 protected:
   // used internally
diff --git a/Source/cmIncludeExternalMSProjectCommand.cxx b/Source/cmIncludeExternalMSProjectCommand.cxx
index 03388c7e9..bd16b1d92 100644
--- a/Source/cmIncludeExternalMSProjectCommand.cxx
+++ b/Source/cmIncludeExternalMSProjectCommand.cxx
@@ -91,9 +91,8 @@ bool cmIncludeExternalMSProjectCommand::InitialPass(
     if (!platformMapping.empty())
       target->SetProperty("VS_PLATFORM_MAPPING", platformMapping.c_str());
 
-    for (std::vector<std::string>::const_iterator it = depends.begin();
-         it != depends.end(); ++it) {
-      target->AddUtility(it->c_str());
+    for (std::string const& d : depends) {
+      target->AddUtility(d.c_str());
     }
   }
 #endif
diff --git a/Source/cmIncludeExternalMSProjectCommand.h b/Source/cmIncludeExternalMSProjectCommand.h
index 375646fa6..945acdc13 100644
--- a/Source/cmIncludeExternalMSProjectCommand.h
+++ b/Source/cmIncludeExternalMSProjectCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmIncludeExternalMSProjectCommand_h
 #define cmIncludeExternalMSProjectCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -25,17 +25,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
-  {
-    return new cmIncludeExternalMSProjectCommand;
-  }
+  cmCommand* Clone() override { return new cmIncludeExternalMSProjectCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmIncludeGuardCommand.cxx b/Source/cmIncludeGuardCommand.cxx
new file mode 100644
index 000000000..505b07cad
--- /dev/null
+++ b/Source/cmIncludeGuardCommand.cxx
@@ -0,0 +1,108 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#include "cmIncludeGuardCommand.h"
+
+#include "cmExecutionStatus.h"
+#include "cmMakefile.h"
+#include "cmStateDirectory.h"
+#include "cmStateSnapshot.h"
+#include "cmSystemTools.h"
+#include "cmake.h"
+
+namespace {
+
+enum IncludeGuardScope
+{
+  VARIABLE,
+  DIRECTORY,
+  GLOBAL
+};
+
+std::string GetIncludeGuardVariableName(std::string const& filePath)
+{
+  std::string result = "__INCGUARD_";
+#ifdef CMAKE_BUILD_WITH_CMAKE
+  result += cmSystemTools::ComputeStringMD5(filePath);
+#else
+  result += cmSystemTools::MakeCidentifier(filePath);
+#endif
+  result += "__";
+  return result;
+}
+
+bool CheckIncludeGuardIsSet(cmMakefile* mf, std::string const& includeGuardVar)
+{
+  if (mf->GetProperty(includeGuardVar)) {
+    return true;
+  }
+  cmStateSnapshot dirSnapshot =
+    mf->GetStateSnapshot().GetBuildsystemDirectoryParent();
+  while (dirSnapshot.GetState()) {
+    cmStateDirectory stateDir = dirSnapshot.GetDirectory();
+    if (stateDir.GetProperty(includeGuardVar)) {
+      return true;
+    }
+    dirSnapshot = dirSnapshot.GetBuildsystemDirectoryParent();
+  }
+  return false;
+}
+
+} // anonymous namespace
+
+// cmIncludeGuardCommand
+bool cmIncludeGuardCommand::InitialPass(std::vector<std::string> const& args,
+                                        cmExecutionStatus& status)
+{
+  if (args.size() > 1) {
+    this->SetError(
+      "given an invalid number of arguments. The command takes at "
+      "most 1 argument.");
+    return false;
+  }
+
+  IncludeGuardScope scope = VARIABLE;
+
+  if (!args.empty()) {
+    std::string const& arg = args[0];
+    if (arg == "DIRECTORY") {
+      scope = DIRECTORY;
+    } else if (arg == "GLOBAL") {
+      scope = GLOBAL;
+    } else {
+      this->SetError("given an invalid scope: " + arg);
+      return false;
+    }
+  }
+
+  std::string includeGuardVar = GetIncludeGuardVariableName(
+    this->Makefile->GetDefinition("CMAKE_CURRENT_LIST_FILE"));
+
+  cmMakefile* const mf = this->Makefile;
+
+  switch (scope) {
+    case VARIABLE:
+      if (mf->IsDefinitionSet(includeGuardVar)) {
+        status.SetReturnInvoked();
+        return true;
+      }
+      mf->AddDefinition(includeGuardVar, true);
+      break;
+    case DIRECTORY:
+      if (CheckIncludeGuardIsSet(mf, includeGuardVar)) {
+        status.SetReturnInvoked();
+        return true;
+      }
+      mf->SetProperty(includeGuardVar, "TRUE");
+      break;
+    case GLOBAL:
+      cmake* const cm = mf->GetCMakeInstance();
+      if (cm->GetProperty(includeGuardVar)) {
+        status.SetReturnInvoked();
+        return true;
+      }
+      cm->SetProperty(includeGuardVar, "TRUE");
+      break;
+  }
+
+  return true;
+}
diff --git a/Source/cmIncludeGuardCommand.h b/Source/cmIncludeGuardCommand.h
new file mode 100644
index 000000000..eaad9b89a
--- /dev/null
+++ b/Source/cmIncludeGuardCommand.h
@@ -0,0 +1,37 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#ifndef cmIncludeGuardCommand_h
+#define cmIncludeGuardCommand_h
+
+#include "cmConfigure.h" // IWYU pragma: keep
+
+#include <string>
+#include <vector>
+
+#include "cmCommand.h"
+
+class cmExecutionStatus;
+
+/** \class cmIncludeGuardCommand
+ * \brief cmIncludeGuardCommand identical to C++ #pragma_once command
+ * Can work in 3 modes: GLOBAL (works on global properties),
+ * DIRECTORY(use directory property), VARIABLE(unnamed overload without
+ * arguments) define an ordinary variable to be used as include guard checker
+ */
+class cmIncludeGuardCommand : public cmCommand
+{
+public:
+  /**
+   * This is a virtual constructor for the command.
+   */
+  cmCommand* Clone() override { return new cmIncludeGuardCommand; }
+
+  /**
+   * This is called when the command is first encountered in
+   * the CMakeLists.txt file.
+   */
+  bool InitialPass(std::vector<std::string> const& args,
+                   cmExecutionStatus& status) override;
+};
+
+#endif
diff --git a/Source/cmIncludeRegularExpressionCommand.h b/Source/cmIncludeRegularExpressionCommand.h
index bac4b8fc3..8da991d08 100644
--- a/Source/cmIncludeRegularExpressionCommand.h
+++ b/Source/cmIncludeRegularExpressionCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmIncludeRegularExpressionCommand_h
 #define cmIncludeRegularExpressionCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,17 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
-  {
-    return new cmIncludeRegularExpressionCommand;
-  }
+  cmCommand* Clone() override { return new cmIncludeRegularExpressionCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmInstallCommand.cxx b/Source/cmInstallCommand.cxx
index 294fb178d..685fc671c 100644
--- a/Source/cmInstallCommand.cxx
+++ b/Source/cmInstallCommand.cxx
@@ -141,23 +141,23 @@ bool cmInstallCommand::HandleScriptMode(std::vector<std::string> const& args)
   // Scan the args again, this time adding install generators each time we
   // encounter a SCRIPT or CODE arg:
   //
-  for (size_t i = 0; i < args.size(); ++i) {
-    if (args[i] == "SCRIPT") {
+  for (std::string const& arg : args) {
+    if (arg == "SCRIPT") {
       doing_script = true;
       doing_code = false;
-    } else if (args[i] == "CODE") {
+    } else if (arg == "CODE") {
       doing_script = false;
       doing_code = true;
-    } else if (args[i] == "COMPONENT") {
+    } else if (arg == "COMPONENT") {
       doing_script = false;
       doing_code = false;
     } else if (doing_script) {
       doing_script = false;
-      std::string script = args[i];
+      std::string script = arg;
       if (!cmSystemTools::FileIsFullPath(script.c_str())) {
         script = this->Makefile->GetCurrentSourceDirectory();
         script += "/";
-        script += args[i];
+        script += arg;
       }
       if (cmSystemTools::FileIsDirectory(script)) {
         this->SetError("given a directory as value of SCRIPT argument.");
@@ -167,7 +167,7 @@ bool cmInstallCommand::HandleScriptMode(std::vector<std::string> const& args)
         script.c_str(), false, component.c_str(), exclude_from_all));
     } else if (doing_code) {
       doing_code = false;
-      std::string const& code = args[i];
+      std::string const& code = arg;
       this->Makefile->AddInstallGenerator(new cmInstallScriptGenerator(
         code.c_str(), true, component.c_str(), exclude_from_all));
     }
@@ -204,7 +204,7 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
 
   cmCommandArgumentsHelper argHelper;
   cmCommandArgumentGroup group;
-  cmCAStringVector genericArgVector(&argHelper, CM_NULLPTR);
+  cmCAStringVector genericArgVector(&argHelper, nullptr);
   cmCAStringVector archiveArgVector(&argHelper, "ARCHIVE", &group);
   cmCAStringVector libraryArgVector(&argHelper, "LIBRARY", &group);
   cmCAStringVector runtimeArgVector(&argHelper, "RUNTIME", &group);
@@ -216,10 +216,10 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
                                           &group);
   cmCAStringVector publicHeaderArgVector(&argHelper, "PUBLIC_HEADER", &group);
   cmCAStringVector resourceArgVector(&argHelper, "RESOURCE", &group);
-  genericArgVector.Follows(CM_NULLPTR);
+  genericArgVector.Follows(nullptr);
   group.Follows(&genericArgVector);
 
-  argHelper.Parse(&args, CM_NULLPTR);
+  argHelper.Parse(&args, nullptr);
 
   // now parse the generic args (i.e. the ones not specialized on LIBRARY/
   // ARCHIVE, RUNTIME etc. (see above)
@@ -229,7 +229,7 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
   cmCAStringVector targetList(&genericArgs.Parser, "TARGETS");
   cmCAString exports(&genericArgs.Parser, "EXPORT",
                      &genericArgs.ArgumentGroup);
-  targetList.Follows(CM_NULLPTR);
+  targetList.Follows(nullptr);
   genericArgs.ArgumentGroup.Follows(&targetList);
   genericArgs.Parse(&genericArgVector.GetVector(), &unknownArgs);
   bool success = genericArgs.Finalize();
@@ -336,19 +336,16 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
     (this->Makefile->IsOn("WIN32") || this->Makefile->IsOn("CYGWIN") ||
      this->Makefile->IsOn("MINGW"));
 
-  for (std::vector<std::string>::const_iterator targetIt =
-         targetList.GetVector().begin();
-       targetIt != targetList.GetVector().end(); ++targetIt) {
+  for (std::string const& tgt : targetList.GetVector()) {
 
-    if (this->Makefile->IsAlias(*targetIt)) {
+    if (this->Makefile->IsAlias(tgt)) {
       std::ostringstream e;
-      e << "TARGETS given target \"" << (*targetIt) << "\" which is an alias.";
+      e << "TARGETS given target \"" << tgt << "\" which is an alias.";
       this->SetError(e.str());
       return false;
     }
     // Lookup this target in the current directory.
-    if (cmTarget* target =
-          this->Makefile->FindLocalNonAliasTarget(*targetIt)) {
+    if (cmTarget* target = this->Makefile->FindLocalNonAliasTarget(tgt)) {
       // Found the target.  Check its type.
       if (target->GetType() != cmStateEnums::EXECUTABLE &&
           target->GetType() != cmStateEnums::STATIC_LIBRARY &&
@@ -357,7 +354,7 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
           target->GetType() != cmStateEnums::OBJECT_LIBRARY &&
           target->GetType() != cmStateEnums::INTERFACE_LIBRARY) {
         std::ostringstream e;
-        e << "TARGETS given target \"" << (*targetIt)
+        e << "TARGETS given target \"" << tgt
           << "\" which is not an executable, library, or module.";
         this->SetError(e.str());
         return false;
@@ -367,7 +364,7 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
         if (!this->Makefile->GetGlobalGenerator()->HasKnownObjectFileLocation(
               &reason)) {
           std::ostringstream e;
-          e << "TARGETS given OBJECT library \"" << (*targetIt)
+          e << "TARGETS given OBJECT library \"" << tgt
             << "\" which may not be installed" << reason << ".";
           this->SetError(e.str());
           return false;
@@ -378,7 +375,7 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
     } else {
       // Did not find the target.
       std::ostringstream e;
-      e << "TARGETS given target \"" << (*targetIt)
+      e << "TARGETS given target \"" << tgt
         << "\" which does not exist in this directory.";
       this->SetError(e.str());
       return false;
@@ -398,19 +395,18 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
   bool installsResource = false;
 
   // Generate install script code to install the given targets.
-  for (std::vector<cmTarget*>::iterator ti = targets.begin();
-       ti != targets.end(); ++ti) {
+  for (cmTarget* ti : targets) {
     // Handle each target type.
-    cmTarget& target = *(*ti);
-    cmInstallTargetGenerator* archiveGenerator = CM_NULLPTR;
-    cmInstallTargetGenerator* libraryGenerator = CM_NULLPTR;
-    cmInstallTargetGenerator* runtimeGenerator = CM_NULLPTR;
-    cmInstallTargetGenerator* objectGenerator = CM_NULLPTR;
-    cmInstallTargetGenerator* frameworkGenerator = CM_NULLPTR;
-    cmInstallTargetGenerator* bundleGenerator = CM_NULLPTR;
-    cmInstallFilesGenerator* privateHeaderGenerator = CM_NULLPTR;
-    cmInstallFilesGenerator* publicHeaderGenerator = CM_NULLPTR;
-    cmInstallFilesGenerator* resourceGenerator = CM_NULLPTR;
+    cmTarget& target = *ti;
+    cmInstallTargetGenerator* archiveGenerator = nullptr;
+    cmInstallTargetGenerator* libraryGenerator = nullptr;
+    cmInstallTargetGenerator* runtimeGenerator = nullptr;
+    cmInstallTargetGenerator* objectGenerator = nullptr;
+    cmInstallTargetGenerator* frameworkGenerator = nullptr;
+    cmInstallTargetGenerator* bundleGenerator = nullptr;
+    cmInstallFilesGenerator* privateHeaderGenerator = nullptr;
+    cmInstallFilesGenerator* publicHeaderGenerator = nullptr;
+    cmInstallFilesGenerator* resourceGenerator = nullptr;
 
     // Track whether this is a namelink-only rule.
     bool namelinkOnly = false;
@@ -437,8 +433,7 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
             runtimeGenerator =
               CreateInstallTargetGenerator(target, runtimeArgs, false);
           }
-          if ((archiveGenerator == CM_NULLPTR) &&
-              (runtimeGenerator == CM_NULLPTR)) {
+          if ((archiveGenerator == nullptr) && (runtimeGenerator == nullptr)) {
             this->SetError("Library TARGETS given no DESTINATION!");
             return false;
           }
@@ -688,16 +683,16 @@ bool cmInstallCommand::HandleTargetsMode(std::vector<std::string> const& args)
     }
 
     // Keep track of whether we're installing anything in each category
-    installsArchive = installsArchive || archiveGenerator != CM_NULLPTR;
-    installsLibrary = installsLibrary || libraryGenerator != CM_NULLPTR;
-    installsRuntime = installsRuntime || runtimeGenerator != CM_NULLPTR;
-    installsObject = installsObject || objectGenerator != CM_NULLPTR;
-    installsFramework = installsFramework || frameworkGenerator != CM_NULLPTR;
-    installsBundle = installsBundle || bundleGenerator != CM_NULLPTR;
+    installsArchive = installsArchive || archiveGenerator != nullptr;
+    installsLibrary = installsLibrary || libraryGenerator != nullptr;
+    installsRuntime = installsRuntime || runtimeGenerator != nullptr;
+    installsObject = installsObject || objectGenerator != nullptr;
+    installsFramework = installsFramework || frameworkGenerator != nullptr;
+    installsBundle = installsBundle || bundleGenerator != nullptr;
     installsPrivateHeader =
-      installsPrivateHeader || privateHeaderGenerator != CM_NULLPTR;
+      installsPrivateHeader || privateHeaderGenerator != nullptr;
     installsPublicHeader =
-      installsPublicHeader || publicHeaderGenerator != CM_NULLPTR;
+      installsPublicHeader || publicHeaderGenerator != nullptr;
     installsResource = installsResource || resourceGenerator;
 
     this->Makefile->AddInstallGenerator(archiveGenerator);
@@ -779,7 +774,7 @@ bool cmInstallCommand::HandleFilesMode(std::vector<std::string> const& args)
   bool programs = (args[0] == "PROGRAMS");
   cmInstallCommandArguments ica(this->DefaultComponentName);
   cmCAStringVector files(&ica.Parser, programs ? "PROGRAMS" : "FILES");
-  files.Follows(CM_NULLPTR);
+  files.Follows(nullptr);
   ica.ArgumentGroup.Follows(&files);
   std::vector<std::string> unknownArgs;
   ica.Parse(&args, &unknownArgs);
@@ -816,10 +811,9 @@ bool cmInstallCommand::HandleFilesMode(std::vector<std::string> const& args)
     this->Makefile->GetPolicyStatus(cmPolicies::CMP0062);
 
   cmGlobalGenerator* gg = this->Makefile->GetGlobalGenerator();
-  for (std::vector<std::string>::const_iterator fileIt = filesVector.begin();
-       fileIt != filesVector.end(); ++fileIt) {
-    if (gg->IsExportedTargetsFile(*fileIt)) {
-      const char* modal = CM_NULLPTR;
+  for (std::string const& file : filesVector) {
+    if (gg->IsExportedTargetsFile(file)) {
+      const char* modal = nullptr;
       std::ostringstream e;
       cmake::MessageType messageType = cmake::AUTHOR_WARNING;
 
@@ -836,8 +830,8 @@ bool cmInstallCommand::HandleFilesMode(std::vector<std::string> const& args)
           messageType = cmake::FATAL_ERROR;
       }
       if (modal) {
-        e << "The file\n  " << *fileIt << "\nwas generated by the export() "
-                                          "command.  It "
+        e << "The file\n  " << file << "\nwas generated by the export() "
+                                       "command.  It "
           << modal << " not be installed with the "
                       "install() command.  Use the install(EXPORT) mechanism "
                       "instead.  See the cmake-packages(7) manual for more.\n";
@@ -895,7 +889,7 @@ bool cmInstallCommand::HandleDirectoryMode(
   bool exclude_from_all = false;
   bool message_never = false;
   std::vector<std::string> dirs;
-  const char* destination = CM_NULLPTR;
+  const char* destination = nullptr;
   std::string permissions_file;
   std::string permissions_dir;
   std::vector<std::string> configurations;
@@ -1181,7 +1175,7 @@ bool cmInstallCommand::HandleExportAndroidMKMode(
   cmCAEnabler exportOld(&ica.Parser, "EXPORT_LINK_INTERFACE_LIBRARIES",
                         &ica.ArgumentGroup);
   cmCAString filename(&ica.Parser, "FILE", &ica.ArgumentGroup);
-  exp.Follows(CM_NULLPTR);
+  exp.Follows(nullptr);
 
   ica.ArgumentGroup.Follows(&exp);
   std::vector<std::string> unknownArgs;
@@ -1273,7 +1267,7 @@ bool cmInstallCommand::HandleExportMode(std::vector<std::string> const& args)
   cmCAEnabler exportOld(&ica.Parser, "EXPORT_LINK_INTERFACE_LIBRARIES",
                         &ica.ArgumentGroup);
   cmCAString filename(&ica.Parser, "FILE", &ica.ArgumentGroup);
-  exp.Follows(CM_NULLPTR);
+  exp.Follows(nullptr);
 
   ica.ArgumentGroup.Follows(&exp);
   std::vector<std::string> unknownArgs;
@@ -1340,10 +1334,7 @@ bool cmInstallCommand::HandleExportMode(std::vector<std::string> const& args)
   cmExportSet* exportSet =
     this->Makefile->GetGlobalGenerator()->GetExportSets()[exp.GetString()];
   if (exportOld.IsEnabled()) {
-    for (std::vector<cmTargetExport*>::const_iterator tei =
-           exportSet->GetTargetExports()->begin();
-         tei != exportSet->GetTargetExports()->end(); ++tei) {
-      cmTargetExport const* te = *tei;
+    for (cmTargetExport* te : *exportSet->GetTargetExports()) {
       cmTarget* tgt =
         this->Makefile->GetGlobalGenerator()->FindTarget(te->TargetName);
       const bool newCMP0022Behavior =
@@ -1380,20 +1371,19 @@ bool cmInstallCommand::MakeFilesFullPath(
   const char* modeName, const std::vector<std::string>& relFiles,
   std::vector<std::string>& absFiles)
 {
-  for (std::vector<std::string>::const_iterator fileIt = relFiles.begin();
-       fileIt != relFiles.end(); ++fileIt) {
-    std::string file = (*fileIt);
+  for (std::string const& relFile : relFiles) {
+    std::string file = relFile;
     std::string::size_type gpos = cmGeneratorExpression::Find(file);
     if (gpos != 0 && !cmSystemTools::FileIsFullPath(file.c_str())) {
       file = this->Makefile->GetCurrentSourceDirectory();
       file += "/";
-      file += *fileIt;
+      file += relFile;
     }
 
     // Make sure the file is not a directory.
     if (gpos == std::string::npos && cmSystemTools::FileIsDirectory(file)) {
       std::ostringstream e;
-      e << modeName << " given directory \"" << (*fileIt) << "\" to install.";
+      e << modeName << " given directory \"" << relFile << "\" to install.";
       this->SetError(e.str());
       return false;
     }
diff --git a/Source/cmInstallCommand.h b/Source/cmInstallCommand.h
index f5d1f9265..8bd015933 100644
--- a/Source/cmInstallCommand.h
+++ b/Source/cmInstallCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmInstallCommand_h
 #define cmInstallCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmInstallCommand; }
+  cmCommand* Clone() override { return new cmInstallCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   bool HandleScriptMode(std::vector<std::string> const& args);
diff --git a/Source/cmInstallCommandArguments.cxx b/Source/cmInstallCommandArguments.cxx
index b73414dd0..12abac81b 100644
--- a/Source/cmInstallCommandArguments.cxx
+++ b/Source/cmInstallCommandArguments.cxx
@@ -2,15 +2,13 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmInstallCommandArguments.h"
 
-#include "cmConfigure.h"
-
 #include "cmSystemTools.h"
 
 // Table of valid permissions.
 const char* cmInstallCommandArguments::PermissionsTable[] = {
   "OWNER_READ",    "OWNER_WRITE",   "OWNER_EXECUTE", "GROUP_READ",
   "GROUP_WRITE",   "GROUP_EXECUTE", "WORLD_READ",    "WORLD_WRITE",
-  "WORLD_EXECUTE", "SETUID",        "SETGID",        CM_NULLPTR
+  "WORLD_EXECUTE", "SETUID",        "SETGID",        nullptr
 };
 
 const std::string cmInstallCommandArguments::EmptyString;
@@ -28,7 +26,7 @@ cmInstallCommandArguments::cmInstallCommandArguments(
   , Optional(&Parser, "OPTIONAL", &ArgumentGroup)
   , NamelinkOnly(&Parser, "NAMELINK_ONLY", &ArgumentGroup)
   , NamelinkSkip(&Parser, "NAMELINK_SKIP", &ArgumentGroup)
-  , GenericArguments(CM_NULLPTR)
+  , GenericArguments(nullptr)
   , DefaultComponentName(defaultComponent)
 {
 }
@@ -38,10 +36,10 @@ const std::string& cmInstallCommandArguments::GetDestination() const
   if (!this->DestinationString.empty()) {
     return this->DestinationString;
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetDestination();
   }
-  return this->EmptyString;
+  return EmptyString;
 }
 
 const std::string& cmInstallCommandArguments::GetComponent() const
@@ -49,7 +47,7 @@ const std::string& cmInstallCommandArguments::GetComponent() const
   if (!this->Component.GetString().empty()) {
     return this->Component.GetString();
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetComponent();
   }
   if (!this->DefaultComponentName.empty()) {
@@ -64,10 +62,10 @@ const std::string& cmInstallCommandArguments::GetRename() const
   if (!this->Rename.GetString().empty()) {
     return this->Rename.GetString();
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetRename();
   }
-  return this->EmptyString;
+  return EmptyString;
 }
 
 const std::string& cmInstallCommandArguments::GetPermissions() const
@@ -75,10 +73,10 @@ const std::string& cmInstallCommandArguments::GetPermissions() const
   if (!this->PermissionsString.empty()) {
     return this->PermissionsString;
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetPermissions();
   }
-  return this->EmptyString;
+  return EmptyString;
 }
 
 bool cmInstallCommandArguments::GetOptional() const
@@ -86,7 +84,7 @@ bool cmInstallCommandArguments::GetOptional() const
   if (this->Optional.IsEnabled()) {
     return true;
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetOptional();
   }
   return false;
@@ -97,7 +95,7 @@ bool cmInstallCommandArguments::GetExcludeFromAll() const
   if (this->ExcludeFromAll.IsEnabled()) {
     return true;
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetExcludeFromAll();
   }
   return false;
@@ -108,7 +106,7 @@ bool cmInstallCommandArguments::GetNamelinkOnly() const
   if (this->NamelinkOnly.IsEnabled()) {
     return true;
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetNamelinkOnly();
   }
   return false;
@@ -119,7 +117,7 @@ bool cmInstallCommandArguments::GetNamelinkSkip() const
   if (this->NamelinkSkip.IsEnabled()) {
     return true;
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetNamelinkSkip();
   }
   return false;
@@ -131,7 +129,7 @@ const std::vector<std::string>& cmInstallCommandArguments::GetConfigurations()
   if (!this->Configurations.GetVector().empty()) {
     return this->Configurations.GetVector();
   }
-  if (this->GenericArguments != CM_NULLPTR) {
+  if (this->GenericArguments != nullptr) {
     return this->GenericArguments->GetConfigurations();
   }
   return this->Configurations.GetVector();
@@ -155,11 +153,9 @@ void cmInstallCommandArguments::Parse(const std::vector<std::string>* args,
 
 bool cmInstallCommandArguments::CheckPermissions()
 {
-  this->PermissionsString = "";
-  for (std::vector<std::string>::const_iterator permIt =
-         this->Permissions.GetVector().begin();
-       permIt != this->Permissions.GetVector().end(); ++permIt) {
-    if (!this->CheckPermissions(*permIt, this->PermissionsString)) {
+  this->PermissionsString.clear();
+  for (std::string const& perm : this->Permissions.GetVector()) {
+    if (!this->CheckPermissions(perm, this->PermissionsString)) {
       return false;
     }
   }
diff --git a/Source/cmInstallDirectoryGenerator.cxx b/Source/cmInstallDirectoryGenerator.cxx
index 54ad85c3b..e4209bd22 100644
--- a/Source/cmInstallDirectoryGenerator.cxx
+++ b/Source/cmInstallDirectoryGenerator.cxx
@@ -7,7 +7,8 @@
 #include "cmLocalGenerator.h"
 #include "cmMakefile.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
+
+#include <memory> // IWYU pragma: keep
 
 cmInstallDirectoryGenerator::cmInstallDirectoryGenerator(
   std::vector<std::string> const& dirs, const char* dest,
@@ -17,7 +18,7 @@ cmInstallDirectoryGenerator::cmInstallDirectoryGenerator(
   bool optional)
   : cmInstallGenerator(dest, configurations, component, message,
                        exclude_from_all)
-  , LocalGenerator(CM_NULLPTR)
+  , LocalGenerator(nullptr)
   , Directories(dirs)
   , FilePermissions(file_permissions)
   , DirPermissions(dir_permissions)
@@ -62,19 +63,17 @@ void cmInstallDirectoryGenerator::GenerateScriptForConfig(
 {
   std::vector<std::string> dirs;
   cmGeneratorExpression ge;
-  for (std::vector<std::string>::const_iterator i = this->Directories.begin();
-       i != this->Directories.end(); ++i) {
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(*i);
+  for (std::string const& d : this->Directories) {
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(d);
     cmSystemTools::ExpandListArgument(
       cge->Evaluate(this->LocalGenerator, config), dirs);
   }
 
   // Make sure all dirs have absolute paths.
   cmMakefile const& mf = *this->LocalGenerator->GetMakefile();
-  for (std::vector<std::string>::iterator i = dirs.begin(); i != dirs.end();
-       ++i) {
-    if (!cmSystemTools::FileIsFullPath(i->c_str())) {
-      *i = std::string(mf.GetCurrentSourceDirectory()) + "/" + *i;
+  for (std::string& d : dirs) {
+    if (!cmSystemTools::FileIsFullPath(d.c_str())) {
+      d = std::string(mf.GetCurrentSourceDirectory()) + "/" + d;
     }
   }
 
@@ -86,7 +85,7 @@ void cmInstallDirectoryGenerator::AddDirectoryInstallRule(
   std::vector<std::string> const& dirs)
 {
   // Write code to install the directories.
-  const char* no_rename = CM_NULLPTR;
+  const char* no_rename = nullptr;
   this->AddInstallRule(os, this->GetDestination(config),
                        cmInstallType_DIRECTORY, dirs, this->Optional,
                        this->FilePermissions.c_str(),
diff --git a/Source/cmInstallDirectoryGenerator.h b/Source/cmInstallDirectoryGenerator.h
index aa2cbc690..ac6e50457 100644
--- a/Source/cmInstallDirectoryGenerator.h
+++ b/Source/cmInstallDirectoryGenerator.h
@@ -6,7 +6,7 @@
 #include "cmInstallGenerator.h"
 #include "cmScriptGenerator.h"
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <string>
@@ -27,16 +27,16 @@ public:
                               const char* component, MessageLevel message,
                               bool exclude_from_all, const char* literal_args,
                               bool optional = false);
-  ~cmInstallDirectoryGenerator() CM_OVERRIDE;
+  ~cmInstallDirectoryGenerator() override;
 
-  void Compute(cmLocalGenerator* lg) CM_OVERRIDE;
+  void Compute(cmLocalGenerator* lg) override;
 
   std::string GetDestination(std::string const& config) const;
 
 protected:
-  void GenerateScriptActions(std::ostream& os, Indent indent) CM_OVERRIDE;
+  void GenerateScriptActions(std::ostream& os, Indent indent) override;
   void GenerateScriptForConfig(std::ostream& os, const std::string& config,
-                               Indent indent) CM_OVERRIDE;
+                               Indent indent) override;
   void AddDirectoryInstallRule(std::ostream& os, const std::string& config,
                                Indent indent,
                                std::vector<std::string> const& dirs);
diff --git a/Source/cmInstallExportAndroidMKGenerator.cxx b/Source/cmInstallExportAndroidMKGenerator.cxx
index 8eeaa9c7c..dd85b8843 100644
--- a/Source/cmInstallExportAndroidMKGenerator.cxx
+++ b/Source/cmInstallExportAndroidMKGenerator.cxx
@@ -95,8 +95,8 @@ void cmInstallExportAndroidMKGenerator::GenerateScriptConfigs(
     std::string config_test = this->CreateConfigTest(i->first);
     os << indent << "if(" << config_test << ")\n";
     this->AddInstallRule(os, this->Destination, cmInstallType_FILES, files,
-                         false, this->FilePermissions.c_str(), CM_NULLPTR,
-                         CM_NULLPTR, CM_NULLPTR, indent.Next());
+                         false, this->FilePermissions.c_str(), nullptr,
+                         nullptr, nullptr, indent.Next());
     os << indent << "endif()\n";
     files.clear();
   }
@@ -135,6 +135,6 @@ void cmInstallExportAndroidMKGenerator::GenerateScriptActions(
   std::vector<std::string> files;
   files.push_back(this->MainImportFile);
   this->AddInstallRule(os, this->Destination, cmInstallType_FILES, files,
-                       false, this->FilePermissions.c_str(), CM_NULLPTR,
-                       CM_NULLPTR, CM_NULLPTR, indent);
+                       false, this->FilePermissions.c_str(), nullptr, nullptr,
+                       nullptr, indent);
 }
diff --git a/Source/cmInstallExportGenerator.cxx b/Source/cmInstallExportGenerator.cxx
index b176e85c5..fdd231ca7 100644
--- a/Source/cmInstallExportGenerator.cxx
+++ b/Source/cmInstallExportGenerator.cxx
@@ -3,7 +3,6 @@
 #include "cmInstallExportGenerator.h"
 
 #include <algorithm>
-#include <map>
 #include <sstream>
 #include <utility>
 
@@ -29,7 +28,7 @@ cmInstallExportGenerator::cmInstallExportGenerator(
   , FileName(filename)
   , Namespace(name_space)
   , ExportOld(exportOld)
-  , LocalGenerator(CM_NULLPTR)
+  , LocalGenerator(nullptr)
 {
   if (android) {
 #ifdef CMAKE_BUILD_WITH_CMAKE
@@ -111,11 +110,9 @@ size_t cmInstallExportGenerator::GetMaxConfigLength() const
       len = this->ConfigurationName.size();
     }
   } else {
-    for (std::vector<std::string>::const_iterator ci =
-           this->ConfigurationTypes->begin();
-         ci != this->ConfigurationTypes->end(); ++ci) {
-      if (ci->size() > len) {
-        len = ci->size();
+    for (std::string const& c : *this->ConfigurationTypes) {
+      if (c.size() > len) {
+        len = c.size();
       }
     }
   }
@@ -153,10 +150,8 @@ void cmInstallExportGenerator::GenerateScript(std::ostream& os)
       this->EFGen->AddConfiguration("");
     }
   } else {
-    for (std::vector<std::string>::const_iterator ci =
-           this->ConfigurationTypes->begin();
-         ci != this->ConfigurationTypes->end(); ++ci) {
-      this->EFGen->AddConfiguration(*ci);
+    for (std::string const& c : *this->ConfigurationTypes) {
+      this->EFGen->AddConfiguration(c);
     }
   }
   this->EFGen->GenerateImportFile();
@@ -174,15 +169,13 @@ void cmInstallExportGenerator::GenerateScriptConfigs(std::ostream& os,
   // Now create a configuration-specific install rule for the import
   // file of each configuration.
   std::vector<std::string> files;
-  for (std::map<std::string, std::string>::const_iterator i =
-         this->EFGen->GetConfigImportFiles().begin();
-       i != this->EFGen->GetConfigImportFiles().end(); ++i) {
-    files.push_back(i->second);
-    std::string config_test = this->CreateConfigTest(i->first);
+  for (auto const& i : this->EFGen->GetConfigImportFiles()) {
+    files.push_back(i.second);
+    std::string config_test = this->CreateConfigTest(i.first);
     os << indent << "if(" << config_test << ")\n";
     this->AddInstallRule(os, this->Destination, cmInstallType_FILES, files,
-                         false, this->FilePermissions.c_str(), CM_NULLPTR,
-                         CM_NULLPTR, CM_NULLPTR, indent.Next());
+                         false, this->FilePermissions.c_str(), nullptr,
+                         nullptr, nullptr, indent.Next());
     os << indent << "endif()\n";
     files.clear();
   }
@@ -221,6 +214,6 @@ void cmInstallExportGenerator::GenerateScriptActions(std::ostream& os,
   std::vector<std::string> files;
   files.push_back(this->MainImportFile);
   this->AddInstallRule(os, this->Destination, cmInstallType_FILES, files,
-                       false, this->FilePermissions.c_str(), CM_NULLPTR,
-                       CM_NULLPTR, CM_NULLPTR, indent);
+                       false, this->FilePermissions.c_str(), nullptr, nullptr,
+                       nullptr, indent);
 }
diff --git a/Source/cmInstallExportGenerator.h b/Source/cmInstallExportGenerator.h
index 047e6b3cd..d23cf063d 100644
--- a/Source/cmInstallExportGenerator.h
+++ b/Source/cmInstallExportGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmInstallExportGenerator_h
 #define cmInstallExportGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmInstallGenerator.h"
 #include "cmScriptGenerator.h"
@@ -30,11 +30,11 @@ public:
                            bool exclude_from_all, const char* filename,
                            const char* name_space, bool exportOld,
                            bool android);
-  ~cmInstallExportGenerator() CM_OVERRIDE;
+  ~cmInstallExportGenerator() override;
 
   cmExportSet* GetExportSet() { return this->ExportSet; }
 
-  void Compute(cmLocalGenerator* lg) CM_OVERRIDE;
+  void Compute(cmLocalGenerator* lg) override;
 
   cmLocalGenerator* GetLocalGenerator() const { return this->LocalGenerator; }
 
@@ -43,9 +43,9 @@ public:
   std::string const& GetDestination() const { return this->Destination; }
 
 protected:
-  void GenerateScript(std::ostream& os) CM_OVERRIDE;
-  void GenerateScriptConfigs(std::ostream& os, Indent indent) CM_OVERRIDE;
-  void GenerateScriptActions(std::ostream& os, Indent indent) CM_OVERRIDE;
+  void GenerateScript(std::ostream& os) override;
+  void GenerateScriptConfigs(std::ostream& os, Indent indent) override;
+  void GenerateScriptActions(std::ostream& os, Indent indent) override;
   void GenerateImportFile(cmExportSet const* exportSet);
   void GenerateImportFile(const char* config, cmExportSet const* exportSet);
   void ComputeTempDir();
diff --git a/Source/cmInstallFilesCommand.h b/Source/cmInstallFilesCommand.h
index b3c27b827..19f255902 100644
--- a/Source/cmInstallFilesCommand.h
+++ b/Source/cmInstallFilesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmInstallFilesCommand_h
 #define cmInstallFilesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmInstallFilesCommand; }
+  cmCommand* Clone() override { return new cmInstallFilesCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   /**
    * This is called at the end after all the information
@@ -39,8 +39,8 @@ public:
    * not implement this method.  At this point, reading and
    * writing to the cache can be done.
    */
-  void FinalPass() CM_OVERRIDE;
-  bool HasFinalPass() const CM_OVERRIDE { return !this->IsFilesForm; }
+  void FinalPass() override;
+  bool HasFinalPass() const override { return !this->IsFilesForm; }
 
 protected:
   void CreateInstallGenerator() const;
diff --git a/Source/cmInstallFilesGenerator.cxx b/Source/cmInstallFilesGenerator.cxx
index 6323a9189..68e3f86d1 100644
--- a/Source/cmInstallFilesGenerator.cxx
+++ b/Source/cmInstallFilesGenerator.cxx
@@ -5,7 +5,8 @@
 #include "cmGeneratorExpression.h"
 #include "cmInstallType.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
+
+#include <memory> // IWYU pragma: keep
 
 class cmLocalGenerator;
 
@@ -16,7 +17,7 @@ cmInstallFilesGenerator::cmInstallFilesGenerator(
   const char* rename, bool optional)
   : cmInstallGenerator(dest, configurations, component, message,
                        exclude_from_all)
-  , LocalGenerator(CM_NULLPTR)
+  , LocalGenerator(nullptr)
   , Files(files)
   , FilePermissions(file_permissions)
   , Rename(rename)
@@ -58,12 +59,12 @@ void cmInstallFilesGenerator::AddFilesInstallRule(
   std::vector<std::string> const& files)
 {
   // Write code to install the files.
-  const char* no_dir_permissions = CM_NULLPTR;
+  const char* no_dir_permissions = nullptr;
   this->AddInstallRule(
     os, this->GetDestination(config),
     (this->Programs ? cmInstallType_PROGRAMS : cmInstallType_FILES), files,
     this->Optional, this->FilePermissions.c_str(), no_dir_permissions,
-    this->Rename.c_str(), CM_NULLPTR, indent);
+    this->Rename.c_str(), nullptr, indent);
 }
 
 void cmInstallFilesGenerator::GenerateScriptActions(std::ostream& os,
@@ -81,9 +82,8 @@ void cmInstallFilesGenerator::GenerateScriptForConfig(
 {
   std::vector<std::string> files;
   cmGeneratorExpression ge;
-  for (std::vector<std::string>::const_iterator i = this->Files.begin();
-       i != this->Files.end(); ++i) {
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(*i);
+  for (std::string const& f : this->Files) {
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(f);
     cmSystemTools::ExpandListArgument(
       cge->Evaluate(this->LocalGenerator, config), files);
   }
diff --git a/Source/cmInstallFilesGenerator.h b/Source/cmInstallFilesGenerator.h
index 62b57f9c7..0ef2a06b0 100644
--- a/Source/cmInstallFilesGenerator.h
+++ b/Source/cmInstallFilesGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmInstallFilesGenerator_h
 #define cmInstallFilesGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmInstallGenerator.h"
 #include "cmScriptGenerator.h"
@@ -27,16 +27,16 @@ public:
                           const char* component, MessageLevel message,
                           bool exclude_from_all, const char* rename,
                           bool optional = false);
-  ~cmInstallFilesGenerator() CM_OVERRIDE;
+  ~cmInstallFilesGenerator() override;
 
-  void Compute(cmLocalGenerator* lg) CM_OVERRIDE;
+  void Compute(cmLocalGenerator* lg) override;
 
   std::string GetDestination(std::string const& config) const;
 
 protected:
-  void GenerateScriptActions(std::ostream& os, Indent indent) CM_OVERRIDE;
+  void GenerateScriptActions(std::ostream& os, Indent indent) override;
   void GenerateScriptForConfig(std::ostream& os, const std::string& config,
-                               Indent indent) CM_OVERRIDE;
+                               Indent indent) override;
   void AddFilesInstallRule(std::ostream& os, std::string const& config,
                            Indent indent,
                            std::vector<std::string> const& files);
diff --git a/Source/cmInstallGenerator.cxx b/Source/cmInstallGenerator.cxx
index 13b588efb..4d019782b 100644
--- a/Source/cmInstallGenerator.cxx
+++ b/Source/cmInstallGenerator.cxx
@@ -113,9 +113,8 @@ void cmInstallGenerator::AddInstallRule(
   if (files.size() == 1) {
     os << " \"" << files[0] << "\"";
   } else {
-    for (std::vector<std::string>::const_iterator fi = files.begin();
-         fi != files.end(); ++fi) {
-      os << "\n" << indent << "  \"" << *fi << "\"";
+    for (std::string const& f : files) {
+      os << "\n" << indent << "  \"" << f << "\"";
     }
     os << "\n" << indent << " ";
     if (!(literal_args && *literal_args)) {
@@ -131,9 +130,9 @@ void cmInstallGenerator::AddInstallRule(
 std::string cmInstallGenerator::CreateComponentTest(const char* component,
                                                     bool exclude_from_all)
 {
-  std::string result = "\"${CMAKE_INSTALL_COMPONENT}\" STREQUAL \"";
+  std::string result = "\"x${CMAKE_INSTALL_COMPONENT}x\" STREQUAL \"x";
   result += component;
-  result += "\"";
+  result += "x\"";
   if (!exclude_from_all) {
     result += " OR NOT CMAKE_INSTALL_COMPONENT";
   }
diff --git a/Source/cmInstallGenerator.h b/Source/cmInstallGenerator.h
index 8f8701f1a..fc1ce864f 100644
--- a/Source/cmInstallGenerator.h
+++ b/Source/cmInstallGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmInstallGenerator_h
 #define cmInstallGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmInstallType.h"
 #include "cmScriptGenerator.h"
@@ -36,14 +36,14 @@ public:
                      std::vector<std::string> const& configurations,
                      const char* component, MessageLevel message,
                      bool exclude_from_all);
-  ~cmInstallGenerator() CM_OVERRIDE;
+  ~cmInstallGenerator() override;
 
   void AddInstallRule(
     std::ostream& os, std::string const& dest, cmInstallType type,
     std::vector<std::string> const& files, bool optional = false,
-    const char* permissions_file = CM_NULLPTR,
-    const char* permissions_dir = CM_NULLPTR, const char* rename = CM_NULLPTR,
-    const char* literal_args = CM_NULLPTR, Indent indent = Indent());
+    const char* permissions_file = nullptr,
+    const char* permissions_dir = nullptr, const char* rename = nullptr,
+    const char* literal_args = nullptr, Indent indent = Indent());
 
   /** Get the install destination as it should appear in the
       installation script.  */
@@ -58,7 +58,7 @@ public:
   virtual void Compute(cmLocalGenerator*) {}
 
 protected:
-  void GenerateScript(std::ostream& os) CM_OVERRIDE;
+  void GenerateScript(std::ostream& os) override;
 
   std::string CreateComponentTest(const char* component,
                                   bool exclude_from_all);
diff --git a/Source/cmInstallProgramsCommand.h b/Source/cmInstallProgramsCommand.h
index 242fb953d..5c705ebf6 100644
--- a/Source/cmInstallProgramsCommand.h
+++ b/Source/cmInstallProgramsCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmInstallProgramsCommand_h
 #define cmInstallProgramsCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmInstallProgramsCommand; }
+  cmCommand* Clone() override { return new cmInstallProgramsCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   /**
    * This is called at the end after all the information
@@ -39,9 +39,9 @@ public:
    * not implement this method.  At this point, reading and
    * writing to the cache can be done.
    */
-  void FinalPass() CM_OVERRIDE;
+  void FinalPass() override;
 
-  bool HasFinalPass() const CM_OVERRIDE { return true; }
+  bool HasFinalPass() const override { return true; }
 
 protected:
   std::string FindInstallSource(const char* name) const;
diff --git a/Source/cmInstallScriptGenerator.cxx b/Source/cmInstallScriptGenerator.cxx
index b39a622f5..f7e6e44a3 100644
--- a/Source/cmInstallScriptGenerator.cxx
+++ b/Source/cmInstallScriptGenerator.cxx
@@ -11,7 +11,7 @@ cmInstallScriptGenerator::cmInstallScriptGenerator(const char* script,
                                                    bool code,
                                                    const char* component,
                                                    bool exclude_from_all)
-  : cmInstallGenerator(CM_NULLPTR, std::vector<std::string>(), component,
+  : cmInstallGenerator(nullptr, std::vector<std::string>(), component,
                        MessageDefault, exclude_from_all)
   , Script(script)
   , Code(code)
diff --git a/Source/cmInstallScriptGenerator.h b/Source/cmInstallScriptGenerator.h
index e183999d0..fe0f7c6f1 100644
--- a/Source/cmInstallScriptGenerator.h
+++ b/Source/cmInstallScriptGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmInstallScriptGenerator_h
 #define cmInstallScriptGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmInstallGenerator.h"
 
@@ -18,10 +18,10 @@ class cmInstallScriptGenerator : public cmInstallGenerator
 public:
   cmInstallScriptGenerator(const char* script, bool code,
                            const char* component, bool exclude_from_all);
-  ~cmInstallScriptGenerator() CM_OVERRIDE;
+  ~cmInstallScriptGenerator() override;
 
 protected:
-  void GenerateScript(std::ostream& os) CM_OVERRIDE;
+  void GenerateScript(std::ostream& os) override;
   std::string Script;
   bool Code;
 };
diff --git a/Source/cmInstallTargetGenerator.cxx b/Source/cmInstallTargetGenerator.cxx
index 84d6f7ac9..b964794ed 100644
--- a/Source/cmInstallTargetGenerator.cxx
+++ b/Source/cmInstallTargetGenerator.cxx
@@ -28,7 +28,7 @@ cmInstallTargetGenerator::cmInstallTargetGenerator(
   : cmInstallGenerator(dest, configurations, component, message,
                        exclude_from_all)
   , TargetName(targetName)
-  , Target(CM_NULLPTR)
+  , Target(nullptr)
   , FilePermissions(file_permissions)
   , ImportLibrary(implib)
   , Optional(optional)
@@ -312,8 +312,8 @@ void cmInstallTargetGenerator::GenerateScriptForConfig(
                  &cmInstallTargetGenerator::PreReplacementTweaks);
 
   // Write code to install the target file.
-  const char* no_dir_permissions = CM_NULLPTR;
-  const char* no_rename = CM_NULLPTR;
+  const char* no_dir_permissions = nullptr;
+  const char* no_rename = nullptr;
   bool optional = this->Optional || this->ImportLibrary;
   this->AddInstallRule(os, this->GetDestination(config), type, filesFrom,
                        optional, this->FilePermissions.c_str(),
@@ -351,8 +351,8 @@ void cmInstallTargetGenerator::GenerateScriptForConfigObjectLibrary(
   std::string const obj_dir = this->Target->GetObjectDirectory(config);
   std::string const literal_args = " FILES_FROM_DIR \"" + obj_dir + "\"";
 
-  const char* no_dir_permissions = CM_NULLPTR;
-  const char* no_rename = CM_NULLPTR;
+  const char* no_dir_permissions = nullptr;
+  const char* no_rename = nullptr;
   this->AddInstallRule(os, dest, cmInstallType_FILES, objects, this->Optional,
                        this->FilePermissions.c_str(), no_dir_permissions,
                        no_rename, literal_args.c_str(), indent);
@@ -362,9 +362,8 @@ void cmInstallTargetGenerator::GetInstallObjectNames(
   std::string const& config, std::vector<std::string>& objects) const
 {
   this->Target->GetTargetObjectNames(config, objects);
-  for (std::vector<std::string>::iterator i = objects.begin();
-       i != objects.end(); ++i) {
-    *i = computeInstallObjectDir(this->Target, config) + "/" + *i;
+  for (std::string& o : objects) {
+    o = computeInstallObjectDir(this->Target, config) + "/" + o;
   }
 }
 
@@ -476,9 +475,8 @@ void cmInstallTargetGenerator::AddTweak(std::ostream& os, Indent indent,
     if (!tws.empty()) {
       Indent indent2 = indent.Next().Next();
       os << indent << "foreach(file\n";
-      for (std::vector<std::string>::const_iterator i = files.begin();
-           i != files.end(); ++i) {
-        os << indent2 << "\"" << this->GetDestDirPath(*i) << "\"\n";
+      for (std::string const& f : files) {
+        os << indent2 << "\"" << this->GetDestDirPath(f) << "\"\n";
       }
       os << indent2 << ")\n";
       os << tws;
@@ -546,11 +544,7 @@ void cmInstallTargetGenerator::AddInstallNamePatchRule(
         this->Target->GetLinkInformation(config)) {
     std::set<cmGeneratorTarget const*> const& sharedLibs =
       cli->GetSharedLibrariesLinked();
-    for (std::set<cmGeneratorTarget const*>::const_iterator j =
-           sharedLibs.begin();
-         j != sharedLibs.end(); ++j) {
-      cmGeneratorTarget const* tgt = *j;
-
+    for (cmGeneratorTarget const* tgt : sharedLibs) {
       // The install_name of an imported target does not change.
       if (tgt->IsImported()) {
         continue;
@@ -609,12 +603,9 @@ void cmInstallTargetGenerator::AddInstallNamePatchRule(
     if (!new_id.empty()) {
       os << "\n" << indent << "  -id \"" << new_id << "\"";
     }
-    for (std::map<std::string, std::string>::const_iterator i =
-           install_name_remap.begin();
-         i != install_name_remap.end(); ++i) {
+    for (auto const& i : install_name_remap) {
       os << "\n"
-         << indent << "  -change \"" << i->first << "\" \"" << i->second
-         << "\"";
+         << indent << "  -change \"" << i.first << "\" \"" << i.second << "\"";
     }
     os << "\n" << indent << "  \"" << toDestDirPath << "\")\n";
   }
@@ -702,10 +693,9 @@ void cmInstallTargetGenerator::AddChrpathPatchRule(
       // Note: These paths are kept unique to avoid
       // install_name_tool corruption.
       std::set<std::string> runpaths;
-      for (std::vector<std::string>::const_iterator i = oldRuntimeDirs.begin();
-           i != oldRuntimeDirs.end(); ++i) {
+      for (std::string const& i : oldRuntimeDirs) {
         std::string runpath =
-          mf->GetGlobalGenerator()->ExpandCFGIntDir(*i, config);
+          mf->GetGlobalGenerator()->ExpandCFGIntDir(i, config);
 
         if (runpaths.find(runpath) == runpaths.end()) {
           runpaths.insert(runpath);
@@ -717,10 +707,9 @@ void cmInstallTargetGenerator::AddChrpathPatchRule(
       }
 
       runpaths.clear();
-      for (std::vector<std::string>::const_iterator i = newRuntimeDirs.begin();
-           i != newRuntimeDirs.end(); ++i) {
+      for (std::string const& i : newRuntimeDirs) {
         std::string runpath =
-          mf->GetGlobalGenerator()->ExpandCFGIntDir(*i, config);
+          mf->GetGlobalGenerator()->ExpandCFGIntDir(i, config);
 
         if (runpaths.find(runpath) == runpaths.end()) {
           os << indent << "execute_process(COMMAND " << installNameTool
diff --git a/Source/cmInstallTargetGenerator.h b/Source/cmInstallTargetGenerator.h
index cf2de58f9..f6bec20b3 100644
--- a/Source/cmInstallTargetGenerator.h
+++ b/Source/cmInstallTargetGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmInstallTargetGenerator_h
 #define cmInstallTargetGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmInstallGenerator.h"
 #include "cmScriptGenerator.h"
@@ -26,7 +26,7 @@ public:
                            std::vector<std::string> const& configurations,
                            const char* component, MessageLevel message,
                            bool exclude_from_all, bool optional);
-  ~cmInstallTargetGenerator() CM_OVERRIDE;
+  ~cmInstallTargetGenerator() override;
 
   /** Select the policy for installing shared library linkable name
       symlinks.  */
@@ -56,7 +56,7 @@ public:
                                         const std::string& config,
                                         NameType nameType = NameNormal);
 
-  void Compute(cmLocalGenerator* lg) CM_OVERRIDE;
+  void Compute(cmLocalGenerator* lg) override;
 
   cmGeneratorTarget* GetTarget() const { return this->Target; }
 
@@ -65,9 +65,9 @@ public:
   std::string GetDestination(std::string const& config) const;
 
 protected:
-  void GenerateScript(std::ostream& os) CM_OVERRIDE;
+  void GenerateScript(std::ostream& os) override;
   void GenerateScriptForConfig(std::ostream& os, const std::string& config,
-                               Indent indent) CM_OVERRIDE;
+                               Indent indent) override;
   void GenerateScriptForConfigObjectLibrary(std::ostream& os,
                                             const std::string& config,
                                             Indent indent);
diff --git a/Source/cmInstallTargetsCommand.cxx b/Source/cmInstallTargetsCommand.cxx
index e00eba012..d721ca0ee 100644
--- a/Source/cmInstallTargetsCommand.cxx
+++ b/Source/cmInstallTargetsCommand.cxx
@@ -2,12 +2,12 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmInstallTargetsCommand.h"
 
+#include <unordered_map>
 #include <utility>
 
 #include "cmGlobalGenerator.h"
 #include "cmMakefile.h"
 #include "cmTarget.h"
-#include "cm_unordered_map.hxx"
 
 class cmExecutionStatus;
 
diff --git a/Source/cmInstallTargetsCommand.h b/Source/cmInstallTargetsCommand.h
index cc8484365..9950fb7db 100644
--- a/Source/cmInstallTargetsCommand.h
+++ b/Source/cmInstallTargetsCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmInstallTargetsCommand_h
 #define cmInstallTargetsCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -25,14 +25,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmInstallTargetsCommand; }
+  cmCommand* Clone() override { return new cmInstallTargetsCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmInstalledFile.cxx b/Source/cmInstalledFile.cxx
index d51fd8d74..3ffeabdb5 100644
--- a/Source/cmInstalledFile.cxx
+++ b/Source/cmInstalledFile.cxx
@@ -7,19 +7,16 @@
 #include "cmMakefile.h"
 #include "cmSystemTools.h"
 
-#include "cmConfigure.h"
 #include <utility>
 
 cmInstalledFile::cmInstalledFile()
-  : NameExpression(CM_NULLPTR)
+  : NameExpression(nullptr)
 {
 }
 
 cmInstalledFile::~cmInstalledFile()
 {
-  if (NameExpression) {
-    delete NameExpression;
-  }
+  delete NameExpression;
 }
 
 cmInstalledFile::Property::Property()
@@ -91,11 +88,9 @@ bool cmInstalledFile::GetProperty(const std::string& prop,
   std::string output;
   std::string separator;
 
-  for (ExpressionVectorType::const_iterator j =
-         property.ValueExpressions.begin();
-       j != property.ValueExpressions.end(); ++j) {
+  for (auto ve : property.ValueExpressions) {
     output += separator;
-    output += (*j)->GetInput();
+    output += ve->GetInput();
     separator = ";";
   }
 
diff --git a/Source/cmInstalledFile.h b/Source/cmInstalledFile.h
index fbf754ffd..47a49590d 100644
--- a/Source/cmInstalledFile.h
+++ b/Source/cmInstalledFile.h
@@ -6,9 +6,9 @@
 #include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmGeneratorExpression.h"
-#include "cm_auto_ptr.hxx"
 
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <string>
 #include <vector>
 
@@ -22,7 +22,7 @@ class cmMakefile;
 class cmInstalledFile
 {
 public:
-  typedef CM_AUTO_PTR<cmCompiledGeneratorExpression>
+  typedef std::unique_ptr<cmCompiledGeneratorExpression>
     CompiledGeneratorExpressionPtrType;
 
   typedef std::vector<cmCompiledGeneratorExpression*> ExpressionVectorType;
diff --git a/Source/cmLinkDirectoriesCommand.cxx b/Source/cmLinkDirectoriesCommand.cxx
index 9b0c28817..98ab7e7b3 100644
--- a/Source/cmLinkDirectoriesCommand.cxx
+++ b/Source/cmLinkDirectoriesCommand.cxx
@@ -19,9 +19,8 @@ bool cmLinkDirectoriesCommand::InitialPass(
     return true;
   }
 
-  for (std::vector<std::string>::const_iterator i = args.begin();
-       i != args.end(); ++i) {
-    this->AddLinkDir(*i);
+  for (std::string const& i : args) {
+    this->AddLinkDir(i);
   }
   return true;
 }
diff --git a/Source/cmLinkDirectoriesCommand.h b/Source/cmLinkDirectoriesCommand.h
index b64e48d70..3fd4e50ab 100644
--- a/Source/cmLinkDirectoriesCommand.h
+++ b/Source/cmLinkDirectoriesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmLinkDirectoriesCommand_h
 #define cmLinkDirectoriesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -26,14 +26,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmLinkDirectoriesCommand; }
+  cmCommand* Clone() override { return new cmLinkDirectoriesCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   void AddLinkDir(std::string const& dir);
diff --git a/Source/cmLinkItem.h b/Source/cmLinkItem.h
index f0fded21f..e8c94871b 100644
--- a/Source/cmLinkItem.h
+++ b/Source/cmLinkItem.h
@@ -3,7 +3,7 @@
 #ifndef cmLinkItem_h
 #define cmLinkItem_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <algorithm>
 #include <map>
@@ -24,7 +24,7 @@ class cmLinkItem : public std::string
 public:
   cmLinkItem()
     : std_string()
-    , Target(CM_NULLPTR)
+    , Target(nullptr)
   {
   }
   cmLinkItem(const std_string& n, cmGeneratorTarget const* t)
@@ -105,7 +105,7 @@ struct cmOptionalLinkInterface : public cmLinkInterface
     , AllDone(false)
     , Exists(false)
     , HadHeadSensitiveCondition(false)
-    , ExplicitLibraries(CM_NULLPTR)
+    , ExplicitLibraries(nullptr)
   {
   }
   bool LibrariesDone;
diff --git a/Source/cmLinkLibrariesCommand.h b/Source/cmLinkLibrariesCommand.h
index f1b3a6816..af25fba4a 100644
--- a/Source/cmLinkLibrariesCommand.h
+++ b/Source/cmLinkLibrariesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmLinkLibrariesCommand_h
 #define cmLinkLibrariesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -25,14 +25,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmLinkLibrariesCommand; }
+  cmCommand* Clone() override { return new cmLinkLibrariesCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmLinkLineComputer.cxx b/Source/cmLinkLineComputer.cxx
index c0f702e25..7511fd21b 100644
--- a/Source/cmLinkLineComputer.cxx
+++ b/Source/cmLinkLineComputer.cxx
@@ -59,17 +59,16 @@ std::string cmLinkLineComputer::ComputeLinkLibs(cmComputeLinkInformation& cli)
   std::string linkLibs;
   typedef cmComputeLinkInformation::ItemVector ItemVector;
   ItemVector const& items = cli.GetItems();
-  for (ItemVector::const_iterator li = items.begin(); li != items.end();
-       ++li) {
-    if (li->Target &&
-        li->Target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  for (auto const& item : items) {
+    if (item.Target &&
+        item.Target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
     }
-    if (li->IsPath) {
+    if (item.IsPath) {
       linkLibs +=
-        this->ConvertToOutputFormat(this->ConvertToLinkReference(li->Value));
+        this->ConvertToOutputFormat(this->ConvertToLinkReference(item.Value));
     } else {
-      linkLibs += li->Value;
+      linkLibs += item.Value;
     }
     linkLibs += " ";
   }
@@ -103,9 +102,8 @@ std::string cmLinkLineComputer::ComputeLinkPath(
 {
   std::string linkPath;
   std::vector<std::string> const& libDirs = cli.GetDirectories();
-  for (std::vector<std::string>::const_iterator libDir = libDirs.begin();
-       libDir != libDirs.end(); ++libDir) {
-    std::string libpath = this->ConvertToOutputForExisting(*libDir);
+  for (std::string const& libDir : libDirs) {
+    std::string libpath = this->ConvertToOutputForExisting(libDir);
     linkPath += " " + libPathFlag;
     linkPath += libpath;
     linkPath += libPathTerminator;
@@ -123,10 +121,9 @@ std::string cmLinkLineComputer::ComputeRPath(cmComputeLinkInformation& cli)
     std::vector<std::string> runtimeDirs;
     cli.GetRPath(runtimeDirs, this->Relink);
 
-    for (std::vector<std::string>::iterator ri = runtimeDirs.begin();
-         ri != runtimeDirs.end(); ++ri) {
+    for (std::string const& rd : runtimeDirs) {
       rpath += cli.GetRuntimeFlag();
-      rpath += this->ConvertToOutputFormat(*ri);
+      rpath += this->ConvertToOutputFormat(rd);
       rpath += " ";
     }
   } else {
@@ -150,10 +147,9 @@ std::string cmLinkLineComputer::ComputeFrameworkPath(
   std::string frameworkPath;
   if (!fwSearchFlag.empty()) {
     std::vector<std::string> const& fwDirs = cli.GetFrameworkPaths();
-    for (std::vector<std::string>::const_iterator fdi = fwDirs.begin();
-         fdi != fwDirs.end(); ++fdi) {
+    for (std::string const& fd : fwDirs) {
       frameworkPath += fwSearchFlag;
-      frameworkPath += this->ConvertToOutputFormat(*fdi);
+      frameworkPath += this->ConvertToOutputFormat(fd);
       frameworkPath += " ";
     }
   }
diff --git a/Source/cmLinkLineComputer.h b/Source/cmLinkLineComputer.h
index d33e8d1ff..a016358fa 100644
--- a/Source/cmLinkLineComputer.h
+++ b/Source/cmLinkLineComputer.h
@@ -4,7 +4,7 @@
 #ifndef cmLinkLineComputer_h
 #define cmLinkLineComputer_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
diff --git a/Source/cmLinkLineDeviceComputer.cxx b/Source/cmLinkLineDeviceComputer.cxx
index 942e9b92c..3beeae321 100644
--- a/Source/cmLinkLineDeviceComputer.cxx
+++ b/Source/cmLinkLineDeviceComputer.cxx
@@ -5,7 +5,6 @@
 
 #include <set>
 #include <sstream>
-#include <vector>
 
 #include "cmComputeLinkInformation.h"
 #include "cmGeneratorTarget.h"
@@ -32,14 +31,13 @@ std::string cmLinkLineDeviceComputer::ComputeLinkLibraries(
   typedef cmComputeLinkInformation::ItemVector ItemVector;
   ItemVector const& items = cli.GetItems();
   std::string config = cli.GetConfig();
-  for (ItemVector::const_iterator li = items.begin(); li != items.end();
-       ++li) {
-    if (!li->Target) {
+  for (auto const& item : items) {
+    if (!item.Target) {
       continue;
     }
 
     bool skippable = false;
-    switch (li->Target->GetType()) {
+    switch (item.Target->GetType()) {
       case cmStateEnums::SHARED_LIBRARY:
       case cmStateEnums::MODULE_LIBRARY:
       case cmStateEnums::INTERFACE_LIBRARY:
@@ -49,7 +47,7 @@ std::string cmLinkLineDeviceComputer::ComputeLinkLibraries(
         // If a static library is resolving its device linking, it should
         // be removed for other device linking
         skippable =
-          li->Target->GetPropertyAsBool("CUDA_RESOLVE_DEVICE_SYMBOLS");
+          item.Target->GetPropertyAsBool("CUDA_RESOLVE_DEVICE_SYMBOLS");
         break;
       default:
         break;
@@ -60,16 +58,16 @@ std::string cmLinkLineDeviceComputer::ComputeLinkLibraries(
     }
 
     std::set<std::string> langs;
-    li->Target->GetLanguages(langs, config);
+    item.Target->GetLanguages(langs, config);
     if (langs.count("CUDA") == 0) {
       continue;
     }
 
-    if (li->IsPath) {
+    if (item.IsPath) {
       fout << this->ConvertToOutputFormat(
-        this->ConvertToLinkReference(li->Value));
+        this->ConvertToLinkReference(item.Value));
     } else {
-      fout << li->Value;
+      fout << item.Value;
     }
     fout << " ";
   }
diff --git a/Source/cmLinkLineDeviceComputer.h b/Source/cmLinkLineDeviceComputer.h
index c3fac6182..81b48b3d4 100644
--- a/Source/cmLinkLineDeviceComputer.h
+++ b/Source/cmLinkLineDeviceComputer.h
@@ -4,7 +4,7 @@
 #ifndef cmLinkLineDeviceComputer_h
 #define cmLinkLineDeviceComputer_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
@@ -23,14 +23,13 @@ class cmLinkLineDeviceComputer : public cmLinkLineComputer
 public:
   cmLinkLineDeviceComputer(cmOutputConverter* outputConverter,
                            cmStateDirectory const& stateDir);
-  ~cmLinkLineDeviceComputer() CM_OVERRIDE;
+  ~cmLinkLineDeviceComputer() override;
 
   std::string ComputeLinkLibraries(cmComputeLinkInformation& cli,
-                                   std::string const& stdLibString)
-    CM_OVERRIDE;
+                                   std::string const& stdLibString) override;
 
   std::string GetLinkerLanguage(cmGeneratorTarget* target,
-                                std::string const& config) CM_OVERRIDE;
+                                std::string const& config) override;
 };
 
 class cmNinjaLinkLineDeviceComputer : public cmLinkLineDeviceComputer
@@ -42,8 +41,7 @@ public:
                                 cmStateDirectory const& stateDir,
                                 cmGlobalNinjaGenerator const* gg);
 
-  std::string ConvertToLinkReference(std::string const& input) const
-    CM_OVERRIDE;
+  std::string ConvertToLinkReference(std::string const& input) const override;
 
 private:
   cmGlobalNinjaGenerator const* GG;
diff --git a/Source/cmLinkedTree.h b/Source/cmLinkedTree.h
index 55592cb35..8865e23a1 100644
--- a/Source/cmLinkedTree.h
+++ b/Source/cmLinkedTree.h
@@ -3,7 +3,7 @@
 #ifndef cmLinkedTree_h
 #define cmLinkedTree_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <assert.h>
 #include <iterator>
@@ -49,7 +49,7 @@ public:
 
   public:
     iterator()
-      : Tree(CM_NULLPTR)
+      : Tree(nullptr)
       , Position(0)
     {
     }
diff --git a/Source/cmListCommand.cxx b/Source/cmListCommand.cxx
index 0542c4fce..ae4f0a84e 100644
--- a/Source/cmListCommand.cxx
+++ b/Source/cmListCommand.cxx
@@ -182,9 +182,9 @@ bool cmListCommand::HandleGetCommand(std::vector<std::string> const& args)
     value += sep;
     sep = ";";
     if (item < 0) {
-      item = (int)nitem + item;
+      item = static_cast<int>(nitem) + item;
     }
-    if (item < 0 || nitem <= (size_t)item) {
+    if (item < 0 || nitem <= static_cast<size_t>(item)) {
       std::ostringstream str;
       str << "index: " << item << " out of range (-" << nitem << ", "
           << nitem - 1 << ")";
@@ -273,9 +273,9 @@ bool cmListCommand::HandleInsertCommand(std::vector<std::string> const& args)
   if (!varArgsExpanded.empty()) {
     size_t nitem = varArgsExpanded.size();
     if (item < 0) {
-      item = (int)nitem + item;
+      item = static_cast<int>(nitem) + item;
     }
-    if (item < 0 || nitem <= (size_t)item) {
+    if (item < 0 || nitem <= static_cast<size_t>(item)) {
       std::ostringstream str;
       str << "index: " << item << " out of range (-" << varArgsExpanded.size()
           << ", "
@@ -423,9 +423,9 @@ bool cmListCommand::HandleRemoveAtCommand(std::vector<std::string> const& args)
   for (cc = 2; cc < args.size(); ++cc) {
     int item = atoi(args[cc].c_str());
     if (item < 0) {
-      item = (int)nitem + item;
+      item = static_cast<int>(nitem) + item;
     }
-    if (item < 0 || nitem <= (size_t)item) {
+    if (item < 0 || nitem <= static_cast<size_t>(item)) {
       std::ostringstream str;
       str << "index: " << item << " out of range (-" << nitem << ", "
           << nitem - 1 << ")";
diff --git a/Source/cmListCommand.h b/Source/cmListCommand.h
index 7789f7df1..29653998c 100644
--- a/Source/cmListCommand.h
+++ b/Source/cmListCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmListCommand_h
 #define cmListCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -22,14 +22,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmListCommand; }
+  cmCommand* Clone() override { return new cmListCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 protected:
   bool HandleLengthCommand(std::vector<std::string> const& args);
diff --git a/Source/cmListFileCache.cxx b/Source/cmListFileCache.cxx
index 0c73cd725..8e8a54d5f 100644
--- a/Source/cmListFileCache.cxx
+++ b/Source/cmListFileCache.cxx
@@ -9,7 +9,6 @@
 #include "cmSystemTools.h"
 #include "cmake.h"
 
-#include "cmConfigure.h"
 #include <algorithm>
 #include <assert.h>
 #include <sstream>
@@ -82,7 +81,7 @@ bool cmListFileParser::ParseFile()
   }
 
   if (bom == cmListFileLexer_BOM_Broken) {
-    cmListFileLexer_SetFileName(this->Lexer, CM_NULLPTR, CM_NULLPTR);
+    cmListFileLexer_SetFileName(this->Lexer, nullptr, nullptr);
     this->IssueFileOpenError("Error while reading Byte-Order-Mark. "
                              "File not seekable?");
     return false;
@@ -90,7 +89,7 @@ bool cmListFileParser::ParseFile()
 
   // Verify the Byte-Order-Mark, if any.
   if (bom != cmListFileLexer_BOM_None && bom != cmListFileLexer_BOM_UTF8) {
-    cmListFileLexer_SetFileName(this->Lexer, CM_NULLPTR, CM_NULLPTR);
+    cmListFileLexer_SetFileName(this->Lexer, nullptr, nullptr);
     this->IssueFileOpenError(
       "File starts with a Byte-Order-Mark that is not UTF-8.");
     return false;
@@ -330,13 +329,13 @@ cmListFileBacktrace::cmListFileBacktrace(cmStateSnapshot const& bottom,
 
 cmListFileBacktrace::cmListFileBacktrace()
   : Bottom()
-  , Cur(CM_NULLPTR)
+  , Cur(nullptr)
 {
 }
 
 cmListFileBacktrace::cmListFileBacktrace(cmStateSnapshot const& snapshot)
   : Bottom(snapshot.GetCallStackBottom())
-  , Cur(CM_NULLPTR)
+  , Cur(nullptr)
 {
 }
 
diff --git a/Source/cmLoadCacheCommand.cxx b/Source/cmLoadCacheCommand.cxx
index 00a30bf0e..32fdef51c 100644
--- a/Source/cmLoadCacheCommand.cxx
+++ b/Source/cmLoadCacheCommand.cxx
@@ -27,17 +27,16 @@ bool cmLoadCacheCommand::InitialPass(std::vector<std::string> const& args,
   // If this set is empty, all cache entries are brought in
   // and they can not be overridden.
   bool excludeFiles = false;
-  unsigned int i;
   std::set<std::string> excludes;
 
-  for (i = 0; i < args.size(); i++) {
+  for (std::string const& arg : args) {
     if (excludeFiles) {
-      excludes.insert(args[i]);
+      excludes.insert(arg);
     }
-    if (args[i] == "EXCLUDE") {
+    if (arg == "EXCLUDE") {
       excludeFiles = true;
     }
-    if (excludeFiles && (args[i] == "INCLUDE_INTERNALS")) {
+    if (excludeFiles && (arg == "INCLUDE_INTERNALS")) {
       break;
     }
   }
@@ -48,25 +47,25 @@ bool cmLoadCacheCommand::InitialPass(std::vector<std::string> const& args,
   bool includeFiles = false;
   std::set<std::string> includes;
 
-  for (i = 0; i < args.size(); i++) {
+  for (std::string const& arg : args) {
     if (includeFiles) {
-      includes.insert(args[i]);
+      includes.insert(arg);
     }
-    if (args[i] == "INCLUDE_INTERNALS") {
+    if (arg == "INCLUDE_INTERNALS") {
       includeFiles = true;
     }
-    if (includeFiles && (args[i] == "EXCLUDE")) {
+    if (includeFiles && (arg == "EXCLUDE")) {
       break;
     }
   }
 
   // Loop over each build directory listed in the arguments.  Each
   // directory has a cache file.
-  for (i = 0; i < args.size(); i++) {
-    if ((args[i] == "EXCLUDE") || (args[i] == "INCLUDE_INTERNALS")) {
+  for (std::string const& arg : args) {
+    if ((arg == "EXCLUDE") || (arg == "INCLUDE_INTERNALS")) {
       break;
     }
-    this->Makefile->GetCMakeInstance()->LoadCache(args[i], false, excludes,
+    this->Makefile->GetCMakeInstance()->LoadCache(arg, false, excludes,
                                                   includes);
   }
 
@@ -125,7 +124,7 @@ bool cmLoadCacheCommand::ReadWithPrefix(std::vector<std::string> const& args)
         if (i != end) {
           // Completed a line.
           this->CheckLine(line.c_str());
-          line = "";
+          line.clear();
 
           // Skip the newline character.
           ++i;
diff --git a/Source/cmLoadCacheCommand.h b/Source/cmLoadCacheCommand.h
index 1a8a0fc4c..e0f6e4f48 100644
--- a/Source/cmLoadCacheCommand.h
+++ b/Source/cmLoadCacheCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmLoadCacheCommand_h
 #define cmLoadCacheCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <set>
 #include <string>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmLoadCacheCommand; }
+  cmCommand* Clone() override { return new cmLoadCacheCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 protected:
   std::set<std::string> VariablesToRead;
diff --git a/Source/cmLoadCommandCommand.cxx b/Source/cmLoadCommandCommand.cxx
index 92a32a147..6bfac172f 100644
--- a/Source/cmLoadCommandCommand.cxx
+++ b/Source/cmLoadCommandCommand.cxx
@@ -34,12 +34,12 @@ public:
   }
 
   ///! clean up any memory allocated by the plugin
-  ~cmLoadedCommand() CM_OVERRIDE;
+  ~cmLoadedCommand() override;
 
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmLoadedCommand* newC = new cmLoadedCommand;
     // we must copy when we clone
@@ -52,7 +52,7 @@ public:
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus&) CM_OVERRIDE;
+                   cmExecutionStatus&) override;
 
   /**
    * This is called at the end after all the information
@@ -60,10 +60,10 @@ public:
    * not implement this method.  At this point, reading and
    * writing to the cache can be done.
    */
-  void FinalPass() CM_OVERRIDE;
-  bool HasFinalPass() const CM_OVERRIDE
+  void FinalPass() override;
+  bool HasFinalPass() const override
   {
-    return this->info.FinalPass != CM_NULLPTR;
+    return this->info.FinalPass != nullptr;
   }
 
   static const char* LastName;
@@ -86,11 +86,11 @@ public:
 #endif
       signal(SIGILL, TrapsForSignalsCFunction);
     } else {
-      signal(SIGSEGV, CM_NULLPTR);
+      signal(SIGSEGV, nullptr);
 #ifdef SIGBUS
-      signal(SIGBUS, CM_NULLPTR);
+      signal(SIGBUS, nullptr);
 #endif
-      signal(SIGILL, CM_NULLPTR);
+      signal(SIGILL, nullptr);
     }
   }
 
@@ -102,7 +102,7 @@ extern "C" void TrapsForSignalsCFunction(int sig)
   cmLoadedCommand::TrapsForSignals(sig);
 }
 
-const char* cmLoadedCommand::LastName = CM_NULLPTR;
+const char* cmLoadedCommand::LastName = nullptr;
 
 bool cmLoadedCommand::InitialPass(std::vector<std::string> const& args,
                                   cmExecutionStatus&)
@@ -118,17 +118,16 @@ bool cmLoadedCommand::InitialPass(std::vector<std::string> const& args,
 
   // create argc and argv and then invoke the command
   int argc = static_cast<int>(args.size());
-  char** argv = CM_NULLPTR;
+  char** argv = nullptr;
   if (argc) {
-    argv = (char**)malloc(argc * sizeof(char*));
+    argv = static_cast<char**>(malloc(argc * sizeof(char*)));
   }
   int i;
   for (i = 0; i < argc; ++i) {
     argv[i] = strdup(args[i].c_str());
   }
   cmLoadedCommand::InstallSignalHandlers(info.Name);
-  int result =
-    info.InitialPass((void*)&info, (void*)this->Makefile, argc, argv);
+  int result = info.InitialPass(&info, this->Makefile, argc, argv);
   cmLoadedCommand::InstallSignalHandlers(info.Name, 1);
   cmFreeArguments(argc, argv);
 
@@ -147,7 +146,7 @@ void cmLoadedCommand::FinalPass()
 {
   if (this->info.FinalPass) {
     cmLoadedCommand::InstallSignalHandlers(info.Name);
-    this->info.FinalPass((void*)&this->info, (void*)this->Makefile);
+    this->info.FinalPass(&this->info, this->Makefile);
     cmLoadedCommand::InstallSignalHandlers(info.Name, 1);
   }
 }
@@ -156,7 +155,7 @@ cmLoadedCommand::~cmLoadedCommand()
 {
   if (this->info.Destructor) {
     cmLoadedCommand::InstallSignalHandlers(info.Name);
-    this->info.Destructor((void*)&this->info);
+    this->info.Destructor(&this->info);
     cmLoadedCommand::InstallSignalHandlers(info.Name, 1);
   }
   if (this->info.Error) {
@@ -198,7 +197,7 @@ bool cmLoadCommandCommand::InitialPass(std::vector<std::string> const& args,
 
   // Try to find the program.
   std::string fullPath = cmSystemTools::FindFile(moduleName, path);
-  if (fullPath == "") {
+  if (fullPath.empty()) {
     std::ostringstream e;
     e << "Attempt to load command failed from file \"" << moduleName << "\"";
     this->SetError(e.str());
@@ -225,14 +224,13 @@ bool cmLoadCommandCommand::InitialPass(std::vector<std::string> const& args,
 
   // find the init function
   std::string initFuncName = args[0] + "Init";
-  CM_INIT_FUNCTION initFunction =
-    (CM_INIT_FUNCTION)cmsys::DynamicLoader::GetSymbolAddress(lib,
-                                                             initFuncName);
+  CM_INIT_FUNCTION initFunction = reinterpret_cast<CM_INIT_FUNCTION>(
+    cmsys::DynamicLoader::GetSymbolAddress(lib, initFuncName));
   if (!initFunction) {
     initFuncName = "_";
     initFuncName += args[0];
     initFuncName += "Init";
-    initFunction = (CM_INIT_FUNCTION)(
+    initFunction = reinterpret_cast<CM_INIT_FUNCTION>(
       cmsys::DynamicLoader::GetSymbolAddress(lib, initFuncName));
   }
   // if the symbol is found call it to set the name on the
diff --git a/Source/cmLoadCommandCommand.h b/Source/cmLoadCommandCommand.h
index 030786e3d..021e6c7bb 100644
--- a/Source/cmLoadCommandCommand.h
+++ b/Source/cmLoadCommandCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmLoadCommandCommand_h
 #define cmLoadCommandCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -15,9 +15,9 @@ class cmExecutionStatus;
 class cmLoadCommandCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmLoadCommandCommand; }
+  cmCommand* Clone() override { return new cmLoadCommandCommand; }
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmLocalCommonGenerator.cxx b/Source/cmLocalCommonGenerator.cxx
index 6524db401..50ebfa119 100644
--- a/Source/cmLocalCommonGenerator.cxx
+++ b/Source/cmLocalCommonGenerator.cxx
@@ -22,7 +22,7 @@ cmLocalCommonGenerator::cmLocalCommonGenerator(cmGlobalGenerator* gg,
     this->ConfigName = config;
   } else {
     // No configuration type given.
-    this->ConfigName = "";
+    this->ConfigName.clear();
   }
 }
 
@@ -67,10 +67,9 @@ std::string cmLocalCommonGenerator::GetTargetFortranFlags(
         this->Makefile->GetDefinition("CMAKE_Fortran_MODPATH_FLAG")) {
     std::vector<std::string> includes;
     this->GetIncludeDirectories(includes, target, "C", config);
-    for (std::vector<std::string>::const_iterator idi = includes.begin();
-         idi != includes.end(); ++idi) {
+    for (std::string const& id : includes) {
       std::string flg = modpath_flag;
-      flg += this->ConvertToOutputFormat(*idi, cmOutputConverter::SHELL);
+      flg += this->ConvertToOutputFormat(id, cmOutputConverter::SHELL);
       this->AppendFlags(flags, flg);
     }
   }
diff --git a/Source/cmLocalCommonGenerator.h b/Source/cmLocalCommonGenerator.h
index a5afcd87d..a60573ca6 100644
--- a/Source/cmLocalCommonGenerator.h
+++ b/Source/cmLocalCommonGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmLocalCommonGenerator_h
 #define cmLocalCommonGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
@@ -21,14 +21,14 @@ class cmLocalCommonGenerator : public cmLocalGenerator
 public:
   cmLocalCommonGenerator(cmGlobalGenerator* gg, cmMakefile* mf,
                          std::string const& wd);
-  ~cmLocalCommonGenerator() CM_OVERRIDE;
+  ~cmLocalCommonGenerator() override;
 
   std::string const& GetConfigName() { return this->ConfigName; }
 
   std::string GetWorkingDirectory() const { return this->WorkingDirectory; }
 
   std::string GetTargetFortranFlags(cmGeneratorTarget const* target,
-                                    std::string const& config) CM_OVERRIDE;
+                                    std::string const& config) override;
 
 protected:
   std::string WorkingDirectory;
diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index 6ce31c5ea..1a088ea9e 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -102,9 +102,7 @@ cmLocalGenerator::cmLocalGenerator(cmGlobalGenerator* gg, cmMakefile* makefile)
     this->LinkerSysroot = this->Makefile->GetSafeDefinition("CMAKE_SYSROOT");
   }
 
-  for (std::vector<std::string>::iterator i = enabledLanguages.begin();
-       i != enabledLanguages.end(); ++i) {
-    std::string const& lang = *i;
+  for (std::string const& lang : enabledLanguages) {
     if (lang == "NONE") {
       continue;
     }
@@ -209,18 +207,16 @@ void cmLocalGenerator::TraceDependencies()
   if (configs.empty()) {
     configs.push_back("");
   }
-  for (std::vector<std::string>::const_iterator ci = configs.begin();
-       ci != configs.end(); ++ci) {
-    this->GlobalGenerator->CreateEvaluationSourceFiles(*ci);
+  for (std::string const& c : configs) {
+    this->GlobalGenerator->CreateEvaluationSourceFiles(c);
   }
   // Generate the rule files for each target.
-  std::vector<cmGeneratorTarget*> targets = this->GetGeneratorTargets();
-  for (std::vector<cmGeneratorTarget*>::iterator t = targets.begin();
-       t != targets.end(); ++t) {
-    if ((*t)->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  const std::vector<cmGeneratorTarget*>& targets = this->GetGeneratorTargets();
+  for (cmGeneratorTarget* target : targets) {
+    if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
     }
-    (*t)->TraceDependencies();
+    target->TraceDependencies();
   }
 }
 
@@ -259,34 +255,60 @@ void cmLocalGenerator::GenerateTestFiles()
     fout << "include(\"" << testIncludeFile << "\")" << std::endl;
   }
 
+  const char* testIncludeFiles =
+    this->Makefile->GetProperty("TEST_INCLUDE_FILES");
+  if (testIncludeFiles) {
+    std::vector<std::string> includesList;
+    cmSystemTools::ExpandListArgument(testIncludeFiles, includesList);
+    for (std::string const& i : includesList) {
+      fout << "include(\"" << i << "\")" << std::endl;
+    }
+  }
+
   // Ask each test generator to write its code.
   std::vector<cmTestGenerator*> const& testers =
     this->Makefile->GetTestGenerators();
-  for (std::vector<cmTestGenerator*>::const_iterator gi = testers.begin();
-       gi != testers.end(); ++gi) {
-    (*gi)->Compute(this);
-    (*gi)->Generate(fout, config, configurationTypes);
+  for (cmTestGenerator* tester : testers) {
+    tester->Compute(this);
+    tester->Generate(fout, config, configurationTypes);
   }
   typedef std::vector<cmStateSnapshot> vec_t;
   vec_t const& children = this->Makefile->GetStateSnapshot().GetChildren();
   std::string parentBinDir = this->GetCurrentBinaryDirectory();
-  for (vec_t::const_iterator i = children.begin(); i != children.end(); ++i) {
+  for (cmStateSnapshot const& i : children) {
     // TODO: Use add_subdirectory instead?
-    std::string outP = i->GetDirectory().GetCurrentBinary();
+    std::string outP = i.GetDirectory().GetCurrentBinary();
     outP = this->ConvertToRelativePath(parentBinDir, outP);
     outP = cmOutputConverter::EscapeForCMake(outP);
     fout << "subdirs(" << outP << ")" << std::endl;
   }
+
+  // Add directory labels property
+  const char* directoryLabels =
+    this->Makefile->GetDefinition("CMAKE_DIRECTORY_LABELS");
+  const char* labels = this->Makefile->GetProperty("LABELS");
+
+  if (labels || directoryLabels) {
+    fout << "set_directory_properties(PROPERTIES LABELS ";
+    if (labels) {
+      fout << cmOutputConverter::EscapeForCMake(labels);
+    }
+    if (labels && directoryLabels) {
+      fout << ";";
+    }
+    if (directoryLabels) {
+      fout << cmOutputConverter::EscapeForCMake(directoryLabels);
+    }
+    fout << ")" << std::endl;
+  }
 }
 
 void cmLocalGenerator::CreateEvaluationFileOutputs(std::string const& config)
 {
   std::vector<cmGeneratorExpressionEvaluationFile*> ef =
     this->Makefile->GetEvaluationFiles();
-  for (std::vector<cmGeneratorExpressionEvaluationFile*>::const_iterator li =
-         ef.begin();
-       li != ef.end(); ++li) {
-    (*li)->CreateOutputFile(this, config);
+  for (cmGeneratorExpressionEvaluationFile* geef : ef) {
+    geef->CreateOutputFile(this, config);
   }
 }
 
@@ -295,14 +317,12 @@ void cmLocalGenerator::ProcessEvaluationFiles(
 {
   std::vector<cmGeneratorExpressionEvaluationFile*> ef =
     this->Makefile->GetEvaluationFiles();
-  for (std::vector<cmGeneratorExpressionEvaluationFile*>::const_iterator li =
-         ef.begin();
-       li != ef.end(); ++li) {
-    (*li)->Generate(this);
+  for (cmGeneratorExpressionEvaluationFile* geef : ef) {
+    geef->Generate(this);
     if (cmSystemTools::GetFatalErrorOccured()) {
       return;
     }
-    std::vector<std::string> files = (*li)->GetFiles();
+    std::vector<std::string> files = geef->GetFiles();
     std::sort(files.begin(), files.end());
 
     std::vector<std::string> intersection;
@@ -327,6 +347,7 @@ void cmLocalGenerator::GenerateInstallRules()
 {
   // Compute the install prefix.
   const char* prefix = this->Makefile->GetDefinition("CMAKE_INSTALL_PREFIX");
+
 #if defined(_WIN32) && !defined(__CYGWIN__)
   std::string prefix_win32;
   if (!prefix) {
@@ -370,12 +391,11 @@ void cmLocalGenerator::GenerateInstallRules()
   // Choose a default install configuration.
   std::string default_config = config;
   const char* default_order[] = { "RELEASE", "MINSIZEREL", "RELWITHDEBINFO",
-                                  "DEBUG", CM_NULLPTR };
+                                  "DEBUG", nullptr };
   for (const char** c = default_order; *c && default_config.empty(); ++c) {
-    for (std::vector<std::string>::iterator i = configurationTypes.begin();
-         i != configurationTypes.end(); ++i) {
-      if (cmSystemTools::UpperCase(*i) == *c) {
-        default_config = *i;
+    for (std::string const& configurationType : configurationTypes) {
+      if (cmSystemTools::UpperCase(configurationType) == *c) {
+        default_config = configurationType;
       }
     }
   }
@@ -451,13 +471,24 @@ void cmLocalGenerator::GenerateInstallRules()
     /* clang-format on */
   }
 
+  // Copy cmake cross compile state to install code.
+  if (const char* crosscompiling =
+        this->Makefile->GetDefinition("CMAKE_CROSSCOMPILING")) {
+    /* clang-format off */
+    fout <<
+      "# Is this installation the result of a crosscompile?\n"
+      "if(NOT DEFINED CMAKE_CROSSCOMPILING)\n"
+      "  set(CMAKE_CROSSCOMPILING \"" << crosscompiling << "\")\n"
+      "endif()\n"
+      "\n";
+    /* clang-format on */
+  }
+
   // Ask each install generator to write its code.
   std::vector<cmInstallGenerator*> const& installers =
     this->Makefile->GetInstallGenerators();
-  for (std::vector<cmInstallGenerator*>::const_iterator gi =
-         installers.begin();
-       gi != installers.end(); ++gi) {
-    (*gi)->Generate(fout, config, configurationTypes);
+  for (cmInstallGenerator* installer : installers) {
+    installer->Generate(fout, config, configurationTypes);
   }
 
   // Write rules from old-style specification stored in targets.
@@ -469,10 +500,9 @@ void cmLocalGenerator::GenerateInstallRules()
   if (!children.empty()) {
     fout << "if(NOT CMAKE_INSTALL_LOCAL_ONLY)\n";
     fout << "  # Include the install script for each subdirectory.\n";
-    for (std::vector<cmStateSnapshot>::const_iterator ci = children.begin();
-         ci != children.end(); ++ci) {
-      if (!ci->GetDirectory().GetPropertyAsBool("EXCLUDE_FROM_ALL")) {
-        std::string odir = ci->GetDirectory().GetCurrentBinary();
+    for (cmStateSnapshot const& c : children) {
+      if (!c.GetDirectory().GetPropertyAsBool("EXCLUDE_FROM_ALL")) {
+        std::string odir = c.GetDirectory().GetCurrentBinary();
         cmSystemTools::ConvertToUnixSlashes(odir);
         fout << "  include(\"" << odir << "/cmake_install.cmake\")"
              << std::endl;
@@ -504,6 +534,8 @@ void cmLocalGenerator::GenerateInstallRules()
 void cmLocalGenerator::AddGeneratorTarget(cmGeneratorTarget* gt)
 {
   this->GeneratorTargets.push_back(gt);
+  this->GeneratorTargetSearchIndex.insert(
+    std::pair<std::string, cmGeneratorTarget*>(gt->GetName(), gt));
   this->GlobalGenerator->IndexGeneratorTarget(gt);
 }
 
@@ -537,13 +569,12 @@ private:
 cmGeneratorTarget* cmLocalGenerator::FindLocalNonAliasGeneratorTarget(
   const std::string& name) const
 {
-  std::vector<cmGeneratorTarget*>::const_iterator ti =
-    std::find_if(this->GeneratorTargets.begin(), this->GeneratorTargets.end(),
-                 NamedGeneratorTargetFinder(name));
-  if (ti != this->GeneratorTargets.end()) {
-    return *ti;
+  GeneratorTargetMap::const_iterator ti =
+    this->GeneratorTargetSearchIndex.find(name);
+  if (ti != this->GeneratorTargetSearchIndex.end()) {
+    return ti->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmLocalGenerator::ComputeTargetManifest()
@@ -556,17 +587,13 @@ void cmLocalGenerator::ComputeTargetManifest()
   }
 
   // Add our targets to the manifest for each configuration.
-  std::vector<cmGeneratorTarget*> targets = this->GetGeneratorTargets();
-  for (std::vector<cmGeneratorTarget*>::iterator t = targets.begin();
-       t != targets.end(); ++t) {
-    cmGeneratorTarget* target = *t;
+  const std::vector<cmGeneratorTarget*>& targets = this->GetGeneratorTargets();
+  for (cmGeneratorTarget* target : targets) {
     if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
     }
-    for (std::vector<std::string>::iterator ci = configNames.begin();
-         ci != configNames.end(); ++ci) {
-      const char* config = ci->c_str();
-      target->ComputeTargetManifest(config);
+    for (std::string const& c : configNames) {
+      target->ComputeTargetManifest(c);
     }
   }
 }
@@ -581,13 +608,10 @@ bool cmLocalGenerator::ComputeTargetCompileFeatures()
   }
 
   // Process compile features of all targets.
-  std::vector<cmGeneratorTarget*> targets = this->GetGeneratorTargets();
-  for (std::vector<cmGeneratorTarget*>::iterator t = targets.begin();
-       t != targets.end(); ++t) {
-    cmGeneratorTarget* target = *t;
-    for (std::vector<std::string>::iterator ci = configNames.begin();
-         ci != configNames.end(); ++ci) {
-      if (!target->ComputeCompileFeatures(*ci)) {
+  const std::vector<cmGeneratorTarget*>& targets = this->GetGeneratorTargets();
+  for (cmGeneratorTarget* target : targets) {
+    for (std::string const& c : configNames) {
+      if (!target->ComputeCompileFeatures(c)) {
         return false;
       }
     }
@@ -663,7 +687,7 @@ std::string cmLocalGenerator::GetIncludeFlags(
   // normal flag is repeated for each directory.
   std::string sysFlagVar = "CMAKE_INCLUDE_SYSTEM_FLAG_";
   sysFlagVar += lang;
-  const char* sysIncludeFlag = CM_NULLPTR;
+  const char* sysIncludeFlag = nullptr;
   if (repeatFlag) {
     sysIncludeFlag = this->Makefile->GetDefinition(sysFlagVar);
   }
@@ -684,16 +708,15 @@ std::string cmLocalGenerator::GetIncludeFlags(
 #ifdef __APPLE__
   emitted.insert("/System/Library/Frameworks");
 #endif
-  std::vector<std::string>::const_iterator i;
-  for (i = includes.begin(); i != includes.end(); ++i) {
+  for (std::string const& i : includes) {
     if (fwSearchFlag && *fwSearchFlag && this->Makefile->IsOn("APPLE") &&
-        cmSystemTools::IsPathToFramework(i->c_str())) {
-      std::string frameworkDir = *i;
+        cmSystemTools::IsPathToFramework(i.c_str())) {
+      std::string frameworkDir = i;
       frameworkDir += "/../";
       frameworkDir = cmSystemTools::CollapseFullPath(frameworkDir);
       if (emitted.insert(frameworkDir).second) {
         if (sysFwSearchFlag && target &&
-            target->IsSystemIncludeDirectory(*i, config)) {
+            target->IsSystemIncludeDirectory(i, config)) {
           includeFlags << sysFwSearchFlag;
         } else {
           includeFlags << fwSearchFlag;
@@ -706,7 +729,7 @@ std::string cmLocalGenerator::GetIncludeFlags(
 
     if (!flagUsed || repeatFlag) {
       if (sysIncludeFlag && target &&
-          target->IsSystemIncludeDirectory(*i, config)) {
+          target->IsSystemIncludeDirectory(i, config)) {
         includeFlags << sysIncludeFlag;
       } else {
         includeFlags << includeFlag;
@@ -714,7 +737,7 @@ std::string cmLocalGenerator::GetIncludeFlags(
       flagUsed = true;
     }
     std::string includePath =
-      this->ConvertToIncludeReference(*i, shellFormat, forceFullPaths);
+      this->ConvertToIncludeReference(i, shellFormat, forceFullPaths);
     if (quotePaths && !includePath.empty() && includePath[0] != '\"') {
       includeFlags << "\"";
     }
@@ -758,12 +781,11 @@ void cmLocalGenerator::AddCompileOptions(std::string& flags,
       cmSystemTools::ParseWindowsCommandLine(targetFlags, opts);
     }
     target->GetCompileOptions(opts, config, lang);
-    for (std::vector<std::string>::const_iterator i = opts.begin();
-         i != opts.end(); ++i) {
-      if (r.find(i->c_str())) {
+    for (std::string const& opt : opts) {
+      if (r.find(opt.c_str())) {
         // (Re-)Escape this flag.  COMPILE_FLAGS were already parsed
         // as a command line above, and COMPILE_OPTIONS are escaped.
-        this->AppendFlagEscape(flags, *i);
+        this->AppendFlagEscape(flags, opt);
       }
     }
   } else {
@@ -774,30 +796,27 @@ void cmLocalGenerator::AddCompileOptions(std::string& flags,
     }
     std::vector<std::string> opts;
     target->GetCompileOptions(opts, config, lang);
-    for (std::vector<std::string>::const_iterator i = opts.begin();
-         i != opts.end(); ++i) {
+    for (std::string const& opt : opts) {
       // COMPILE_OPTIONS are escaped.
-      this->AppendFlagEscape(flags, *i);
+      this->AppendFlagEscape(flags, opt);
     }
   }
 
-  for (std::map<std::string, std::string>::const_iterator it =
-         target->GetMaxLanguageStandards().begin();
-       it != target->GetMaxLanguageStandards().end(); ++it) {
-    const char* standard = target->GetProperty(it->first + "_STANDARD");
+  for (auto const& it : target->GetMaxLanguageStandards()) {
+    const char* standard = target->GetProperty(it.first + "_STANDARD");
     if (!standard) {
       continue;
     }
-    if (this->Makefile->IsLaterStandard(it->first, standard, it->second)) {
+    if (this->Makefile->IsLaterStandard(it.first, standard, it.second)) {
       std::ostringstream e;
       e << "The COMPILE_FEATURES property of target \"" << target->GetName()
         << "\" was evaluated when computing the link "
            "implementation, and the \""
-        << it->first << "_STANDARD\" was \"" << it->second
+        << it.first << "_STANDARD\" was \"" << it.second
         << "\" for that computation.  Computing the "
            "COMPILE_FEATURES based on the link implementation resulted in a "
            "higher \""
-        << it->first << "_STANDARD\" \"" << standard
+        << it.first << "_STANDARD\" \"" << standard
         << "\".  "
            "This is not permitted. The COMPILE_FEATURES may not both depend "
            "on "
@@ -872,13 +891,12 @@ void cmLocalGenerator::GetIncludeDirectories(std::vector<std::string>& dirs,
   if (const char* value = this->Makefile->GetDefinition(impDirVar)) {
     std::vector<std::string> impDirVec;
     cmSystemTools::ExpandListArgument(value, impDirVec);
-    for (std::vector<std::string>::const_iterator i = impDirVec.begin();
-         i != impDirVec.end(); ++i) {
-      std::string d = rootPath + *i;
+    for (std::string const& i : impDirVec) {
+      std::string d = rootPath + i;
       cmSystemTools::ConvertToUnixSlashes(d);
       emitted.insert(d);
       if (!stripImplicitInclDirs) {
-        implicitDirs.push_back(*i);
+        implicitDirs.push_back(i);
       }
     }
   }
@@ -893,26 +911,24 @@ void cmLocalGenerator::GetIncludeDirectories(std::vector<std::string>& dirs,
   if (this->Makefile->IsOn("CMAKE_INCLUDE_DIRECTORIES_PROJECT_BEFORE")) {
     const char* topSourceDir = this->GetState()->GetSourceDirectory();
     const char* topBinaryDir = this->GetState()->GetBinaryDirectory();
-    for (std::vector<std::string>::const_iterator i = includes.begin();
-         i != includes.end(); ++i) {
+    for (std::string const& i : includes) {
       // Emit this directory only if it is a subdirectory of the
       // top-level source or binary tree.
-      if (cmSystemTools::ComparePath(*i, topSourceDir) ||
-          cmSystemTools::ComparePath(*i, topBinaryDir) ||
-          cmSystemTools::IsSubDirectory(*i, topSourceDir) ||
-          cmSystemTools::IsSubDirectory(*i, topBinaryDir)) {
-        if (emitted.insert(*i).second) {
-          dirs.push_back(*i);
+      if (cmSystemTools::ComparePath(i, topSourceDir) ||
+          cmSystemTools::ComparePath(i, topBinaryDir) ||
+          cmSystemTools::IsSubDirectory(i, topSourceDir) ||
+          cmSystemTools::IsSubDirectory(i, topBinaryDir)) {
+        if (emitted.insert(i).second) {
+          dirs.push_back(i);
         }
       }
     }
   }
 
   // Construct the final ordered include directory list.
-  for (std::vector<std::string>::const_iterator i = includes.begin();
-       i != includes.end(); ++i) {
-    if (emitted.insert(*i).second) {
-      dirs.push_back(*i);
+  for (std::string const& i : includes) {
+    if (emitted.insert(i).second) {
+      dirs.push_back(i);
     }
   }
 
@@ -930,10 +946,9 @@ void cmLocalGenerator::GetIncludeDirectories(std::vector<std::string>& dirs,
     dirs.push_back(*i);
   }
 
-  for (std::vector<std::string>::const_iterator i = implicitDirs.begin();
-       i != implicitDirs.end(); ++i) {
-    if (std::find(includes.begin(), includes.end(), *i) != includes.end()) {
-      dirs.push_back(*i);
+  for (std::string const& i : implicitDirs) {
+    if (std::find(includes.begin(), includes.end(), i) != includes.end()) {
+      dirs.push_back(i);
     }
   }
 }
@@ -991,9 +1006,7 @@ void cmLocalGenerator::GetTargetFlags(
         target->GetSourceFiles(sources, buildType);
         std::string defFlag =
           this->Makefile->GetSafeDefinition("CMAKE_LINK_DEF_FILE_FLAG");
-        for (std::vector<cmSourceFile*>::const_iterator i = sources.begin();
-             i != sources.end(); ++i) {
-          cmSourceFile* sf = *i;
+        for (cmSourceFile* sf : sources) {
           if (sf->GetExtension() == "def") {
             linkFlags += defFlag;
             linkFlags += this->ConvertToOutputFormat(
@@ -1144,10 +1157,9 @@ static std::string GetFrameworkFlags(const std::string& lang,
   lg->GetIncludeDirectories(includes, target, "C", config);
   // check all include directories for frameworks as this
   // will already have added a -F for the framework
-  for (std::vector<std::string>::iterator i = includes.begin();
-       i != includes.end(); ++i) {
-    if (lg->GetGlobalGenerator()->NameResolvesToFramework(*i)) {
-      std::string frameworkDir = *i;
+  for (std::string const& include : includes) {
+    if (lg->GetGlobalGenerator()->NameResolvesToFramework(include)) {
+      std::string frameworkDir = include;
       frameworkDir += "/../";
       frameworkDir = cmSystemTools::CollapseFullPath(frameworkDir);
       emitted.insert(frameworkDir);
@@ -1157,11 +1169,11 @@ static std::string GetFrameworkFlags(const std::string& lang,
   std::string flags;
   if (cmComputeLinkInformation* cli = target->GetLinkInformation(config)) {
     std::vector<std::string> const& frameworks = cli->GetFrameworkPaths();
-    for (std::vector<std::string>::const_iterator i = frameworks.begin();
-         i != frameworks.end(); ++i) {
-      if (emitted.insert(*i).second) {
+    for (std::string const& framework : frameworks) {
+      if (emitted.insert(framework).second) {
         flags += fwSearchFlag;
-        flags += lg->ConvertToOutputFormat(*i, cmOutputConverter::SHELL);
+        flags +=
+          lg->ConvertToOutputFormat(framework, cmOutputConverter::SHELL);
         flags += " ";
       }
     }
@@ -1301,7 +1313,7 @@ void cmLocalGenerator::AddArchitectureFlags(std::string& flags,
     target->GetAppleArchs(config, archs);
     const char* sysroot = this->Makefile->GetDefinition("CMAKE_OSX_SYSROOT");
     if (sysroot && sysroot[0] == '/' && !sysroot[1]) {
-      sysroot = CM_NULLPTR;
+      sysroot = nullptr;
     }
     std::string sysrootFlagVar =
       std::string("CMAKE_") + lang + "_SYSROOT_FLAG";
@@ -1314,10 +1326,9 @@ void cmLocalGenerator::AddArchitectureFlags(std::string& flags,
       this->Makefile->GetDefinition(deploymentTargetFlagVar);
     if (!archs.empty() && !lang.empty() &&
         (lang[0] == 'C' || lang[0] == 'F')) {
-      for (std::vector<std::string>::iterator i = archs.begin();
-           i != archs.end(); ++i) {
+      for (std::string const& arch : archs) {
         flags += " -arch ";
-        flags += *i;
+        flags += arch;
       }
     }
 
@@ -1399,7 +1410,7 @@ bool cmLocalGenerator::GetRealDependency(const std::string& inName,
 
   // If the input name is the empty string, there is no real
   // dependency. Short-circuit the other checks:
-  if (name == "") {
+  if (name.empty()) {
     return false;
   }
 
@@ -1502,20 +1513,34 @@ void cmLocalGenerator::AddCompilerRequirementFlag(
     // This compiler has no notion of language standard levels.
     return;
   }
-  std::string stdProp = lang + "_STANDARD";
-  const char* standardProp = target->GetProperty(stdProp);
-  if (!standardProp) {
-    return;
-  }
   std::string extProp = lang + "_EXTENSIONS";
-  std::string type = "EXTENSION";
   bool ext = true;
   if (const char* extPropValue = target->GetProperty(extProp)) {
     if (cmSystemTools::IsOff(extPropValue)) {
       ext = false;
-      type = "STANDARD";
     }
   }
+  std::string stdProp = lang + "_STANDARD";
+  const char* standardProp = target->GetProperty(stdProp);
+  if (!standardProp) {
+    if (ext) {
+      // No language standard is specified and extensions are not disabled.
+      // Check if this compiler needs a flag to enable extensions.
+      std::string const option_flag =
+        "CMAKE_" + lang + "_EXTENSION_COMPILE_OPTION";
+      if (const char* opt =
+            target->Target->GetMakefile()->GetDefinition(option_flag)) {
+        std::vector<std::string> optVec;
+        cmSystemTools::ExpandListArgument(opt, optVec);
+        for (std::string const& i : optVec) {
+          this->AppendFlagEscape(flags, i);
+        }
+      }
+    }
+    return;
+  }
+
+  std::string const type = ext ? "EXTENSION" : "STANDARD";
 
   if (target->GetPropertyAsBool(lang + "_STANDARD_REQUIRED")) {
     std::string option_flag =
@@ -1535,14 +1560,14 @@ void cmLocalGenerator::AddCompilerRequirementFlag(
     } else {
       std::vector<std::string> optVec;
       cmSystemTools::ExpandListArgument(opt, optVec);
-      for (size_t i = 0; i < optVec.size(); ++i) {
-        this->AppendFlagEscape(flags, optVec[i]);
+      for (std::string const& i : optVec) {
+        this->AppendFlagEscape(flags, i);
       }
     }
     return;
   }
 
-  static std::map<std::string, std::vector<std::string> > langStdMap;
+  static std::map<std::string, std::vector<std::string>> langStdMap;
   if (langStdMap.empty()) {
     // Maintain sorted order, most recent first.
     langStdMap["CXX"].push_back("17");
@@ -1583,8 +1608,10 @@ void cmLocalGenerator::AddCompilerRequirementFlag(
     return;
   }
 
-  // Greater or equal because the standards are stored in
-  // backward chronological order.
+  // If the standard requested is older than the compiler's default
+  // then we need to use a flag to change it.  The comparison is
+  // greater-or-equal because the standards are stored in backward
+  // chronological order.
   if (stdIt >= defaultStdIt) {
     std::string option_flag =
       "CMAKE_" + lang + *stdIt + "_" + type + "_COMPILE_OPTION";
@@ -1593,12 +1620,15 @@ void cmLocalGenerator::AddCompilerRequirementFlag(
       target->Target->GetMakefile()->GetRequiredDefinition(option_flag);
     std::vector<std::string> optVec;
     cmSystemTools::ExpandListArgument(opt, optVec);
-    for (size_t i = 0; i < optVec.size(); ++i) {
-      this->AppendFlagEscape(flags, optVec[i]);
+    for (std::string const& i : optVec) {
+      this->AppendFlagEscape(flags, i);
     }
     return;
   }
 
+  // The standard requested is at least as new as the compiler's default,
+  // and the standard request is not required.  Decay to the newest standard
+  // for which a flag is defined.
   for (; stdIt < defaultStdIt; ++stdIt) {
     std::string option_flag =
       "CMAKE_" + lang + *stdIt + "_" + type + "_COMPILE_OPTION";
@@ -1607,8 +1637,8 @@ void cmLocalGenerator::AddCompilerRequirementFlag(
           target->Target->GetMakefile()->GetDefinition(option_flag)) {
       std::vector<std::string> optVec;
       cmSystemTools::ExpandListArgument(opt, optVec);
-      for (size_t i = 0; i < optVec.size(); ++i) {
-        this->AppendFlagEscape(flags, optVec[i]);
+      for (std::string const& i : optVec) {
+        this->AppendFlagEscape(flags, i);
       }
       return;
     }
@@ -1679,7 +1709,7 @@ void cmLocalGenerator::AddVisibilityPresetFlags(
   }
 
   std::string warnCMP0063;
-  std::string* pWarnCMP0063 = CM_NULLPTR;
+  std::string* pWarnCMP0063 = nullptr;
   if (target->GetType() != cmStateEnums::SHARED_LIBRARY &&
       target->GetType() != cmStateEnums::MODULE_LIBRARY &&
       !target->IsExecutableWithExports()) {
@@ -1790,7 +1820,7 @@ void cmLocalGenerator::AddPositionIndependentFlags(std::string& flags,
                                                    std::string const& lang,
                                                    int targetType)
 {
-  const char* picFlags = CM_NULLPTR;
+  const char* picFlags = nullptr;
 
   if (targetType == cmStateEnums::EXECUTABLE) {
     std::string flagsVar = "CMAKE_";
@@ -1807,9 +1837,8 @@ void cmLocalGenerator::AddPositionIndependentFlags(std::string& flags,
   if (picFlags) {
     std::vector<std::string> options;
     cmSystemTools::ExpandListArgument(picFlags, options);
-    for (std::vector<std::string>::const_iterator oi = options.begin();
-         oi != options.end(); ++oi) {
-      this->AppendFlagEscape(flags, *oi);
+    for (std::string const& o : options) {
+      this->AppendFlagEscape(flags, o);
     }
   }
 }
@@ -1873,15 +1902,14 @@ void cmLocalGenerator::AppendIPOLinkerFlags(std::string& flags,
 
   const std::string name = "CMAKE_" + lang + "_LINK_OPTIONS_IPO";
   const char* rawFlagsList = this->Makefile->GetDefinition(name);
-  if (rawFlagsList == CM_NULLPTR) {
+  if (rawFlagsList == nullptr) {
     return;
   }
 
   std::vector<std::string> flagsList;
   cmSystemTools::ExpandListArgument(rawFlagsList, flagsList);
-  for (std::vector<std::string>::const_iterator oi = flagsList.begin();
-       oi != flagsList.end(); ++oi) {
-    this->AppendFlagEscape(flags, *oi);
+  for (std::string const& o : flagsList) {
+    this->AppendFlagEscape(flags, o);
   }
 }
 
@@ -1903,13 +1931,12 @@ void cmLocalGenerator::AppendDefines(
   std::set<std::string>& defines,
   const std::vector<std::string>& defines_vec) const
 {
-  for (std::vector<std::string>::const_iterator di = defines_vec.begin();
-       di != defines_vec.end(); ++di) {
+  for (std::string const& d : defines_vec) {
     // Skip unsupported definitions.
-    if (!this->CheckDefinition(*di)) {
+    if (!this->CheckDefinition(d)) {
       continue;
     }
-    defines.insert(*di);
+    defines.insert(d);
   }
 }
 
@@ -1979,9 +2006,8 @@ void cmLocalGenerator::AppendFeatureOptions(std::string& flags,
   if (const char* optionList = this->Makefile->GetDefinition(optVar)) {
     std::vector<std::string> options;
     cmSystemTools::ExpandListArgument(optionList, options);
-    for (std::vector<std::string>::const_iterator oi = options.begin();
-         oi != options.end(); ++oi) {
-      this->AppendFlagEscape(flags, *oi);
+    for (std::string const& o : options) {
+      this->AppendFlagEscape(flags, o);
     }
   }
 }
@@ -2003,7 +2029,7 @@ const char* cmLocalGenerator::GetFeature(const std::string& feature,
     }
     snp = snp.GetBuildsystemDirectoryParent();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 std::string cmLocalGenerator::GetProjectName() const
@@ -2025,10 +2051,9 @@ std::string cmLocalGenerator::ConstructComment(
     comment = "Generating ";
     const char* sep = "";
     std::string currentBinaryDir = this->GetCurrentBinaryDirectory();
-    for (std::vector<std::string>::const_iterator o = ccg.GetOutputs().begin();
-         o != ccg.GetOutputs().end(); ++o) {
+    for (std::string const& o : ccg.GetOutputs()) {
       comment += sep;
-      comment += this->ConvertToRelativePath(currentBinaryDir, *o);
+      comment += this->ConvertToRelativePath(currentBinaryDir, o);
       sep = ", ";
     }
     return comment;
@@ -2058,37 +2083,36 @@ void cmLocalGenerator::GenerateTargetInstallRules(
 {
   // Convert the old-style install specification from each target to
   // an install generator and run it.
-  std::vector<cmGeneratorTarget*> tgts = this->GetGeneratorTargets();
-  for (std::vector<cmGeneratorTarget*>::iterator l = tgts.begin();
-       l != tgts.end(); ++l) {
-    if ((*l)->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  const std::vector<cmGeneratorTarget*>& tgts = this->GetGeneratorTargets();
+  for (cmGeneratorTarget* l : tgts) {
+    if (l->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
     }
 
     // Include the user-specified pre-install script for this target.
-    if (const char* preinstall = (*l)->GetProperty("PRE_INSTALL_SCRIPT")) {
-      cmInstallScriptGenerator g(preinstall, false, CM_NULLPTR, false);
+    if (const char* preinstall = l->GetProperty("PRE_INSTALL_SCRIPT")) {
+      cmInstallScriptGenerator g(preinstall, false, nullptr, false);
       g.Generate(os, config, configurationTypes);
     }
 
     // Install this target if a destination is given.
-    if ((*l)->Target->GetInstallPath() != "") {
+    if (!l->Target->GetInstallPath().empty()) {
       // Compute the full install destination.  Note that converting
       // to unix slashes also removes any trailing slash.
       // We also skip over the leading slash given by the user.
-      std::string destination = (*l)->Target->GetInstallPath().substr(1);
+      std::string destination = l->Target->GetInstallPath().substr(1);
       cmSystemTools::ConvertToUnixSlashes(destination);
       if (destination.empty()) {
         destination = ".";
       }
 
       // Generate the proper install generator for this target type.
-      switch ((*l)->GetType()) {
+      switch (l->GetType()) {
         case cmStateEnums::EXECUTABLE:
         case cmStateEnums::STATIC_LIBRARY:
         case cmStateEnums::MODULE_LIBRARY: {
           // Use a target install generator.
-          cmInstallTargetGeneratorLocal g(this, (*l)->GetName(),
+          cmInstallTargetGeneratorLocal g(this, l->GetName(),
                                           destination.c_str(), false);
           g.Generate(os, config, configurationTypes);
         } break;
@@ -2097,18 +2121,18 @@ void cmLocalGenerator::GenerateTargetInstallRules(
           // Special code to handle DLL.  Install the import library
           // to the normal destination and the DLL to the runtime
           // destination.
-          cmInstallTargetGeneratorLocal g1(this, (*l)->GetName(),
+          cmInstallTargetGeneratorLocal g1(this, l->GetName(),
                                            destination.c_str(), true);
           g1.Generate(os, config, configurationTypes);
           // We also skip over the leading slash given by the user.
-          destination = (*l)->Target->GetRuntimeInstallPath().substr(1);
+          destination = l->Target->GetRuntimeInstallPath().substr(1);
           cmSystemTools::ConvertToUnixSlashes(destination);
-          cmInstallTargetGeneratorLocal g2(this, (*l)->GetName(),
+          cmInstallTargetGeneratorLocal g2(this, l->GetName(),
                                            destination.c_str(), false);
           g2.Generate(os, config, configurationTypes);
 #else
           // Use a target install generator.
-          cmInstallTargetGeneratorLocal g(this, (*l)->GetName(),
+          cmInstallTargetGeneratorLocal g(this, l->GetName(),
                                           destination.c_str(), false);
           g.Generate(os, config, configurationTypes);
 #endif
@@ -2119,8 +2143,8 @@ void cmLocalGenerator::GenerateTargetInstallRules(
     }
 
     // Include the user-specified post-install script for this target.
-    if (const char* postinstall = (*l)->GetProperty("POST_INSTALL_SCRIPT")) {
-      cmInstallScriptGenerator g(postinstall, false, CM_NULLPTR, false);
+    if (const char* postinstall = l->GetProperty("POST_INSTALL_SCRIPT")) {
+      cmInstallScriptGenerator g(postinstall, false, nullptr, false);
       g.Generate(os, config, configurationTypes);
     }
   }
diff --git a/Source/cmLocalGenerator.h b/Source/cmLocalGenerator.h
index 9f78be465..4a7d2ca64 100644
--- a/Source/cmLocalGenerator.h
+++ b/Source/cmLocalGenerator.h
@@ -3,13 +3,14 @@
 #ifndef cmLocalGenerator_h
 #define cmLocalGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cm_kwiml.h"
 #include <iosfwd>
 #include <map>
 #include <set>
 #include <string>
+#include <unordered_map>
 #include <vector>
 
 #include "cmListFileCache.h"
@@ -282,8 +283,8 @@ public:
   // Compute object file names.
   std::string GetObjectFileNameWithoutTarget(
     const cmSourceFile& source, std::string const& dir_max,
-    bool* hasSourceExtension = CM_NULLPTR,
-    char const* customOutputExtension = CM_NULLPTR);
+    bool* hasSourceExtension = nullptr,
+    char const* customOutputExtension = nullptr);
 
   /** Fill out the static linker flags for the given target.  */
   void GetStaticLibraryFlags(std::string& flags, std::string const& config,
@@ -311,7 +312,7 @@ public:
 
   virtual void ComputeObjectFilenames(
     std::map<cmSourceFile const*, std::string>& mapping,
-    cmGeneratorTarget const* gt = CM_NULLPTR);
+    cmGeneratorTarget const* gt = nullptr);
 
   bool IsWindowsShell() const;
   bool IsWatcomWMake() const;
@@ -353,8 +354,12 @@ protected:
   std::string::size_type ObjectPathMax;
   std::set<std::string> ObjectMaxPathViolations;
 
-  std::set<cmGeneratorTarget const*> WarnCMP0063;
+  typedef std::unordered_map<std::string, cmGeneratorTarget*>
+    GeneratorTargetMap;
+  GeneratorTargetMap GeneratorTargetSearchIndex;
   std::vector<cmGeneratorTarget*> GeneratorTargets;
+
+  std::set<cmGeneratorTarget const*> WarnCMP0063;
   std::vector<cmGeneratorTarget*> ImportedGeneratorTargets;
   std::vector<cmGeneratorTarget*> OwnedImportedGeneratorTargets;
   std::map<std::string, std::string> AliasTargets;
diff --git a/Source/cmLocalGhsMultiGenerator.cxx b/Source/cmLocalGhsMultiGenerator.cxx
index 5f37af528..ab6774e00 100644
--- a/Source/cmLocalGhsMultiGenerator.cxx
+++ b/Source/cmLocalGhsMultiGenerator.cxx
@@ -20,9 +20,9 @@ cmLocalGhsMultiGenerator::~cmLocalGhsMultiGenerator()
 
 void cmLocalGhsMultiGenerator::Generate()
 {
-  std::vector<cmGeneratorTarget*> tgts = this->GetGeneratorTargets();
+  const std::vector<cmGeneratorTarget*>& tgts = this->GetGeneratorTargets();
 
-  for (std::vector<cmGeneratorTarget*>::iterator l = tgts.begin();
+  for (std::vector<cmGeneratorTarget*>::const_iterator l = tgts.begin();
        l != tgts.end(); ++l) {
     if ((*l)->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
diff --git a/Source/cmLocalNinjaGenerator.cxx b/Source/cmLocalNinjaGenerator.cxx
index 266710cb1..477ce51f0 100644
--- a/Source/cmLocalNinjaGenerator.cxx
+++ b/Source/cmLocalNinjaGenerator.cxx
@@ -5,6 +5,7 @@
 #include <algorithm>
 #include <assert.h>
 #include <iterator>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <utility>
@@ -22,7 +23,6 @@
 #include "cmState.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmLocalNinjaGenerator::cmLocalNinjaGenerator(cmGlobalGenerator* gg,
@@ -55,7 +55,7 @@ void cmLocalNinjaGenerator::Generate()
   this->HomeRelativeOutputPath = this->ConvertToRelativePath(
     this->GetBinaryDirectory(), this->GetCurrentBinaryDirectory());
   if (this->HomeRelativeOutputPath == ".") {
-    this->HomeRelativeOutputPath = "";
+    this->HomeRelativeOutputPath.clear();
   }
 
   this->WriteProcessedMakefile(this->GetBuildFileStream());
@@ -79,19 +79,19 @@ void cmLocalNinjaGenerator::Generate()
     }
   }
 
-  std::vector<cmGeneratorTarget*> targets = this->GetGeneratorTargets();
-  for (std::vector<cmGeneratorTarget*>::iterator t = targets.begin();
-       t != targets.end(); ++t) {
-    if ((*t)->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  const std::vector<cmGeneratorTarget*>& targets = this->GetGeneratorTargets();
+  for (cmGeneratorTarget* target : targets) {
+    if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
     }
-    cmNinjaTargetGenerator* tg = cmNinjaTargetGenerator::New(*t);
+    cmNinjaTargetGenerator* tg = cmNinjaTargetGenerator::New(target);
     if (tg) {
       tg->Generate();
       // Add the target to "all" if required.
       if (!this->GetGlobalNinjaGenerator()->IsExcluded(
-            this->GetGlobalNinjaGenerator()->GetLocalGenerators()[0], *t)) {
-        this->GetGlobalNinjaGenerator()->AddDependencyToAll(*t);
+            this->GetGlobalNinjaGenerator()->GetLocalGenerators()[0],
+            target)) {
+        this->GetGlobalNinjaGenerator()->AddDependencyToAll(target);
       }
       delete tg;
     }
@@ -212,8 +212,7 @@ void cmLocalNinjaGenerator::WritePools(std::ostream& os)
       os, "Pools defined by global property JOB_POOLS");
     std::vector<std::string> pools;
     cmSystemTools::ExpandListArgument(jobpools, pools);
-    for (size_t i = 0; i < pools.size(); ++i) {
-      std::string const& pool = pools[i];
+    for (std::string const& pool : pools) {
       const std::string::size_type eq = pool.find('=');
       unsigned int jobs;
       if (eq != std::string::npos &&
@@ -250,12 +249,10 @@ void cmLocalNinjaGenerator::ComputeObjectFilenames(
 {
   // Determine if these object files should use a custom extension
   char const* custom_ext = gt->GetCustomObjectExtension();
-  for (std::map<cmSourceFile const*, std::string>::iterator si =
-         mapping.begin();
-       si != mapping.end(); ++si) {
-    cmSourceFile const* sf = si->first;
+  for (auto& si : mapping) {
+    cmSourceFile const* sf = si.first;
     bool keptSourceExtension;
-    si->second = this->GetObjectFileNameWithoutTarget(
+    si.second = this->GetObjectFileNameWithoutTarget(
       *sf, gt->ObjectDirectory, &keptSourceExtension, custom_ext);
   }
 }
@@ -291,10 +288,9 @@ void cmLocalNinjaGenerator::AppendCustomCommandDeps(
   cmCustomCommandGenerator const& ccg, cmNinjaDeps& ninjaDeps)
 {
   const std::vector<std::string>& deps = ccg.GetDepends();
-  for (std::vector<std::string>::const_iterator i = deps.begin();
-       i != deps.end(); ++i) {
+  for (std::string const& i : deps) {
     std::string dep;
-    if (this->GetRealDependency(*i, this->GetConfigName(), dep)) {
+    if (this->GetRealDependency(i, this->GetConfigName(), dep)) {
       ninjaDeps.push_back(
         this->GetGlobalNinjaGenerator()->ConvertToNinjaPath(dep));
     }
@@ -408,9 +404,8 @@ void cmLocalNinjaGenerator::WriteCustomCommandBuildStatement(
                  this->GetGlobalNinjaGenerator()->MapToNinjaPath());
   this->AppendCustomCommandDeps(ccg, ninjaDeps);
 
-  for (cmNinjaDeps::iterator i = ninjaOutputs.begin(); i != ninjaOutputs.end();
-       ++i) {
-    this->GetGlobalNinjaGenerator()->SeenCustomCommandOutput(*i);
+  for (std::string const& ninjaOutput : ninjaOutputs) {
+    this->GetGlobalNinjaGenerator()->SeenCustomCommandOutput(ninjaOutput);
   }
 
   std::vector<std::string> cmdLines;
@@ -445,10 +440,9 @@ void cmLocalNinjaGenerator::AddCustomCommandTarget(cmCustomCommand const* cc,
 
 void cmLocalNinjaGenerator::WriteCustomCommandBuildStatements()
 {
-  for (std::vector<cmCustomCommand const*>::iterator vi =
-         this->CustomCommands.begin();
-       vi != this->CustomCommands.end(); ++vi) {
-    CustomCommandTargetMap::iterator i = this->CustomCommandTargets.find(*vi);
+  for (cmCustomCommand const* customCommand : this->CustomCommands) {
+    CustomCommandTargetMap::iterator i =
+      this->CustomCommandTargets.find(customCommand);
     assert(i != this->CustomCommandTargets.end());
 
     // A custom command may appear on multiple targets.  However, some build
@@ -511,7 +505,7 @@ std::string cmLocalNinjaGenerator::MakeCustomLauncher(
   std::string launcher = property_value;
   launcher += " ";
 
-  CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+  std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
     this->CreateRulePlaceholderExpander());
 
   rulePlaceholderExpander->ExpandRuleVariables(this, launcher, vars);
diff --git a/Source/cmLocalNinjaGenerator.h b/Source/cmLocalNinjaGenerator.h
index a45e01851..bb16899be 100644
--- a/Source/cmLocalNinjaGenerator.h
+++ b/Source/cmLocalNinjaGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmLocalNinjaGenerator_h
 #define cmLocalNinjaGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <map>
@@ -38,14 +38,14 @@ class cmLocalNinjaGenerator : public cmLocalCommonGenerator
 public:
   cmLocalNinjaGenerator(cmGlobalGenerator* gg, cmMakefile* mf);
 
-  ~cmLocalNinjaGenerator() CM_OVERRIDE;
+  ~cmLocalNinjaGenerator() override;
 
-  void Generate() CM_OVERRIDE;
+  void Generate() override;
 
-  cmRulePlaceholderExpander* CreateRulePlaceholderExpander() const CM_OVERRIDE;
+  cmRulePlaceholderExpander* CreateRulePlaceholderExpander() const override;
 
-  std::string GetTargetDirectory(cmGeneratorTarget const* target) const
-    CM_OVERRIDE;
+  std::string GetTargetDirectory(
+    cmGeneratorTarget const* target) const override;
 
   const cmGlobalNinjaGenerator* GetGlobalNinjaGenerator() const;
   cmGlobalNinjaGenerator* GetGlobalNinjaGenerator();
@@ -76,13 +76,13 @@ public:
 
   void ComputeObjectFilenames(
     std::map<cmSourceFile const*, std::string>& mapping,
-    cmGeneratorTarget const* gt = CM_NULLPTR) CM_OVERRIDE;
+    cmGeneratorTarget const* gt = nullptr) override;
 
 protected:
   std::string ConvertToIncludeReference(
     std::string const& path,
     cmOutputConverter::OutputFormat format = cmOutputConverter::SHELL,
-    bool forceFullPaths = false) CM_OVERRIDE;
+    bool forceFullPaths = false) override;
 
 private:
   cmGeneratedFileStream& GetBuildFileStream() const;
@@ -105,7 +105,7 @@ private:
 
   std::string HomeRelativeOutputPath;
 
-  typedef std::map<cmCustomCommand const*, std::set<cmGeneratorTarget*> >
+  typedef std::map<cmCustomCommand const*, std::set<cmGeneratorTarget*>>
     CustomCommandTargetMap;
   CustomCommandTargetMap CustomCommandTargets;
   std::vector<cmCustomCommand const*> CustomCommands;
diff --git a/Source/cmLocalUnixMakefileGenerator3.cxx b/Source/cmLocalUnixMakefileGenerator3.cxx
index 9b9d22cf5..e26182a15 100644
--- a/Source/cmLocalUnixMakefileGenerator3.cxx
+++ b/Source/cmLocalUnixMakefileGenerator3.cxx
@@ -5,13 +5,12 @@
 #include "cmsys/FStream.hxx"
 #include "cmsys/Terminal.h"
 #include <algorithm>
-#include <functional>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <utility>
 
 #include "cmAlgorithms.h"
-#include "cmCustomCommand.h"
 #include "cmCustomCommandGenerator.h"
 #include "cmFileTimeComparison.h"
 #include "cmGeneratedFileStream.h"
@@ -30,7 +29,6 @@
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
 #include "cmVersion.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 // Include dependency scanners for supported languages.  Only the
@@ -116,17 +114,16 @@ void cmLocalUnixMakefileGenerator3::Generate()
     this->Makefile->IsOn("CMAKE_SKIP_ASSEMBLY_SOURCE_RULES");
 
   // Generate the rule files for each target.
-  std::vector<cmGeneratorTarget*> targets = this->GetGeneratorTargets();
+  const std::vector<cmGeneratorTarget*>& targets = this->GetGeneratorTargets();
   cmGlobalUnixMakefileGenerator3* gg =
     static_cast<cmGlobalUnixMakefileGenerator3*>(this->GlobalGenerator);
-  for (std::vector<cmGeneratorTarget*>::iterator t = targets.begin();
-       t != targets.end(); ++t) {
-    if ((*t)->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
+  for (cmGeneratorTarget* target : targets) {
+    if (target->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
     }
-    CM_AUTO_PTR<cmMakefileTargetGenerator> tg(
-      cmMakefileTargetGenerator::New(*t));
-    if (tg.get()) {
+    std::unique_ptr<cmMakefileTargetGenerator> tg(
+      cmMakefileTargetGenerator::New(target));
+    if (tg) {
       tg->WriteRuleFiles();
       gg->RecordTargetProgress(tg.get());
     }
@@ -146,7 +143,7 @@ void cmLocalUnixMakefileGenerator3::ComputeHomeRelativeOutputPath()
   this->HomeRelativeOutputPath = this->MaybeConvertToRelativePath(
     this->GetBinaryDirectory(), this->GetCurrentBinaryDirectory());
   if (this->HomeRelativeOutputPath == ".") {
-    this->HomeRelativeOutputPath = "";
+    this->HomeRelativeOutputPath.clear();
   }
   if (!this->HomeRelativeOutputPath.empty()) {
     this->HomeRelativeOutputPath += "/";
@@ -159,12 +156,10 @@ void cmLocalUnixMakefileGenerator3::ComputeObjectFilenames(
 {
   // Determine if these object files should use a custom extension
   char const* custom_ext = gt->GetCustomObjectExtension();
-  for (std::map<cmSourceFile const*, std::string>::iterator si =
-         mapping.begin();
-       si != mapping.end(); ++si) {
-    cmSourceFile const* sf = si->first;
+  for (auto& si : mapping) {
+    cmSourceFile const* sf = si.first;
     bool keptSourceExtension;
-    si->second = this->GetObjectFileNameWithoutTarget(
+    si.second = this->GetObjectFileNameWithoutTarget(
       *sf, gt->ObjectDirectory, &keptSourceExtension, custom_ext);
   }
 }
@@ -172,10 +167,8 @@ void cmLocalUnixMakefileGenerator3::ComputeObjectFilenames(
 void cmLocalUnixMakefileGenerator3::GetLocalObjectFiles(
   std::map<std::string, LocalObjectInfo>& localObjectFiles)
 {
-  std::vector<cmGeneratorTarget*> targets = this->GetGeneratorTargets();
-  for (std::vector<cmGeneratorTarget*>::iterator ti = targets.begin();
-       ti != targets.end(); ++ti) {
-    cmGeneratorTarget* gt = *ti;
+  const std::vector<cmGeneratorTarget*>& targets = this->GetGeneratorTargets();
+  for (cmGeneratorTarget* gt : targets) {
     if (gt->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
     }
@@ -189,9 +182,7 @@ void cmLocalUnixMakefileGenerator3::GetLocalObjectFiles(
     dir += this->GetTargetDirectory(gt);
     dir += "/";
     // Compute the name of each object file.
-    for (std::vector<cmSourceFile const*>::iterator si = objectSources.begin();
-         si != objectSources.end(); ++si) {
-      cmSourceFile const* sf = *si;
+    for (cmSourceFile const* sf : objectSources) {
       bool hasSourceExtension = true;
       std::string objectName =
         this->GetObjectFileNameWithoutTarget(*sf, dir, &hasSourceExtension);
@@ -210,18 +201,16 @@ void cmLocalUnixMakefileGenerator3::GetIndividualFileTargets(
 {
   std::map<std::string, LocalObjectInfo> localObjectFiles;
   this->GetLocalObjectFiles(localObjectFiles);
-  for (std::map<std::string, LocalObjectInfo>::iterator lo =
-         localObjectFiles.begin();
-       lo != localObjectFiles.end(); ++lo) {
-    targets.push_back(lo->first);
-
-    std::string::size_type dot_pos = lo->first.rfind(".");
-    std::string base = lo->first.substr(0, dot_pos);
-    if (lo->second.HasPreprocessRule) {
+  for (auto const& localObjectFile : localObjectFiles) {
+    targets.push_back(localObjectFile.first);
+
+    std::string::size_type dot_pos = localObjectFile.first.rfind(".");
+    std::string base = localObjectFile.first.substr(0, dot_pos);
+    if (localObjectFile.second.HasPreprocessRule) {
       targets.push_back(base + ".i");
     }
 
-    if (lo->second.HasAssembleRule) {
+    if (localObjectFile.second.HasAssembleRule) {
       targets.push_back(base + ".s");
     }
   }
@@ -270,23 +259,20 @@ void cmLocalUnixMakefileGenerator3::WriteLocalMakefile()
 
   // now write out the object rules
   // for each object file name
-  for (std::map<std::string, LocalObjectInfo>::iterator lo =
-         localObjectFiles.begin();
-       lo != localObjectFiles.end(); ++lo) {
+  for (auto& localObjectFile : localObjectFiles) {
     // Add a convenience rule for building the object file.
-    this->WriteObjectConvenienceRule(ruleFileStream,
-                                     "target to build an object file",
-                                     lo->first.c_str(), lo->second);
+    this->WriteObjectConvenienceRule(
+      ruleFileStream, "target to build an object file",
+      localObjectFile.first.c_str(), localObjectFile.second);
 
     // Check whether preprocessing and assembly rules make sense.
     // They make sense only for C and C++ sources.
     bool lang_has_preprocessor = false;
     bool lang_has_assembly = false;
 
-    for (std::vector<LocalObjectEntry>::const_iterator ei = lo->second.begin();
-         ei != lo->second.end(); ++ei) {
-      if (ei->Language == "C" || ei->Language == "CXX" ||
-          ei->Language == "CUDA" || ei->Language == "Fortran") {
+    for (LocalObjectEntry const& entry : localObjectFile.second) {
+      if (entry.Language == "C" || entry.Language == "CXX" ||
+          entry.Language == "CUDA" || entry.Language == "Fortran") {
         // Right now, C, C++, Fortran and CUDA have both a preprocessor and the
         // ability to generate assembly code
         lang_has_preprocessor = true;
@@ -297,21 +283,21 @@ void cmLocalUnixMakefileGenerator3::WriteLocalMakefile()
 
     // Add convenience rules for preprocessed and assembly files.
     if (lang_has_preprocessor && do_preprocess_rules) {
-      std::string::size_type dot_pos = lo->first.rfind(".");
-      std::string base = lo->first.substr(0, dot_pos);
-      this->WriteObjectConvenienceRule(ruleFileStream,
-                                       "target to preprocess a source file",
-                                       (base + ".i").c_str(), lo->second);
-      lo->second.HasPreprocessRule = true;
+      std::string::size_type dot_pos = localObjectFile.first.rfind(".");
+      std::string base = localObjectFile.first.substr(0, dot_pos);
+      this->WriteObjectConvenienceRule(
+        ruleFileStream, "target to preprocess a source file",
+        (base + ".i").c_str(), localObjectFile.second);
+      localObjectFile.second.HasPreprocessRule = true;
     }
 
     if (lang_has_assembly && do_assembly_rules) {
-      std::string::size_type dot_pos = lo->first.rfind(".");
-      std::string base = lo->first.substr(0, dot_pos);
+      std::string::size_type dot_pos = localObjectFile.first.rfind(".");
+      std::string base = localObjectFile.first.substr(0, dot_pos);
       this->WriteObjectConvenienceRule(
         ruleFileStream, "target to generate assembly for a file",
-        (base + ".s").c_str(), lo->second);
-      lo->second.HasAssembleRule = true;
+        (base + ".s").c_str(), localObjectFile.second);
+      localObjectFile.second.HasAssembleRule = true;
     }
   }
 
@@ -348,16 +334,15 @@ void cmLocalUnixMakefileGenerator3::WriteObjectConvenienceRule(
     std::vector<std::string> depends;
     depends.push_back(output);
     std::vector<std::string> no_commands;
-    this->WriteMakeRule(ruleFileStream, CM_NULLPTR, outNoExt, depends,
+    this->WriteMakeRule(ruleFileStream, nullptr, outNoExt, depends,
                         no_commands, true, true);
     inHelp = false;
   }
 
   // Recursively make the rule for each target using the object file.
   std::vector<std::string> commands;
-  for (std::vector<LocalObjectEntry>::const_iterator t = info.begin();
-       t != info.end(); ++t) {
-    std::string tgtMakefileName = this->GetRelativeTargetDirectory(t->Target);
+  for (LocalObjectEntry const& t : info) {
+    std::string tgtMakefileName = this->GetRelativeTargetDirectory(t.Target);
     std::string targetName = tgtMakefileName;
     tgtMakefileName += "/build.make";
     targetName += "/";
@@ -382,20 +367,19 @@ void cmLocalUnixMakefileGenerator3::WriteLocalMakefileTargets(
 
   // for each target we just provide a rule to cd up to the top and do a make
   // on the target
-  std::vector<cmGeneratorTarget*> targets = this->GetGeneratorTargets();
+  const std::vector<cmGeneratorTarget*>& targets = this->GetGeneratorTargets();
   std::string localName;
-  for (std::vector<cmGeneratorTarget*>::iterator t = targets.begin();
-       t != targets.end(); ++t) {
-    if (((*t)->GetType() == cmStateEnums::EXECUTABLE) ||
-        ((*t)->GetType() == cmStateEnums::STATIC_LIBRARY) ||
-        ((*t)->GetType() == cmStateEnums::SHARED_LIBRARY) ||
-        ((*t)->GetType() == cmStateEnums::MODULE_LIBRARY) ||
-        ((*t)->GetType() == cmStateEnums::OBJECT_LIBRARY) ||
-        ((*t)->GetType() == cmStateEnums::UTILITY)) {
-      emitted.insert((*t)->GetName());
+  for (cmGeneratorTarget* target : targets) {
+    if ((target->GetType() == cmStateEnums::EXECUTABLE) ||
+        (target->GetType() == cmStateEnums::STATIC_LIBRARY) ||
+        (target->GetType() == cmStateEnums::SHARED_LIBRARY) ||
+        (target->GetType() == cmStateEnums::MODULE_LIBRARY) ||
+        (target->GetType() == cmStateEnums::OBJECT_LIBRARY) ||
+        (target->GetType() == cmStateEnums::UTILITY)) {
+      emitted.insert(target->GetName());
 
       // for subdirs add a rule to build this specific target by name.
-      localName = this->GetRelativeTargetDirectory(*t);
+      localName = this->GetRelativeTargetDirectory(target);
       localName += "/rule";
       commands.clear();
       depends.clear();
@@ -411,20 +395,20 @@ void cmLocalUnixMakefileGenerator3::WriteLocalMakefileTargets(
                           localName, depends, commands, true);
 
       // Add a target with the canonical name (no prefix, suffix or path).
-      if (localName != (*t)->GetName()) {
+      if (localName != target->GetName()) {
         commands.clear();
         depends.push_back(localName);
         this->WriteMakeRule(ruleFileStream, "Convenience name for target.",
-                            (*t)->GetName(), depends, commands, true);
+                            target->GetName(), depends, commands, true);
       }
 
       // Add a fast rule to build the target
-      std::string makefileName = this->GetRelativeTargetDirectory(*t);
+      std::string makefileName = this->GetRelativeTargetDirectory(target);
       makefileName += "/build.make";
       // make sure the makefile name is suitable for a makefile
-      std::string makeTargetName = this->GetRelativeTargetDirectory(*t);
+      std::string makeTargetName = this->GetRelativeTargetDirectory(target);
       makeTargetName += "/build";
-      localName = (*t)->GetName();
+      localName = target->GetName();
       localName += "/fast";
       depends.clear();
       commands.clear();
@@ -437,10 +421,10 @@ void cmLocalUnixMakefileGenerator3::WriteLocalMakefileTargets(
 
       // Add a local name for the rule to relink the target before
       // installation.
-      if ((*t)->NeedRelinkBeforeInstall(this->ConfigName)) {
-        makeTargetName = this->GetRelativeTargetDirectory(*t);
+      if (target->NeedRelinkBeforeInstall(this->ConfigName)) {
+        makeTargetName = this->GetRelativeTargetDirectory(target);
         makeTargetName += "/preinstall";
-        localName = (*t)->GetName();
+        localName = target->GetName();
         localName += "/preinstall";
         depends.clear();
         commands.clear();
@@ -581,9 +565,8 @@ void cmLocalUnixMakefileGenerator3::WriteMakeRule(
     // Split dependencies into multiple rule lines.  This allows for
     // very long dependency lists even on older make implementations.
     std::string binDir = this->GetBinaryDirectory();
-    for (std::vector<std::string>::const_iterator dep = depends.begin();
-         dep != depends.end(); ++dep) {
-      replace = *dep;
+    for (std::string const& depend : depends) {
+      replace = depend;
       replace = cmSystemTools::ConvertToOutputPath(
         this->MaybeConvertToRelativePath(binDir, replace).c_str());
       os << cmMakeSafe(tgt) << space << ": " << cmMakeSafe(replace) << "\n";
@@ -718,7 +701,7 @@ void cmLocalUnixMakefileGenerator3::WriteSpecialTargetsTop(
   // Add a fake suffix to keep HP happy.  Must be max 32 chars for SGI make.
   std::vector<std::string> depends;
   depends.push_back(".hpux_make_needs_suffix_list");
-  this->WriteMakeRule(makefileStream, CM_NULLPTR, ".SUFFIXES", depends,
+  this->WriteMakeRule(makefileStream, nullptr, ".SUFFIXES", depends,
                       no_commands, false);
   if (this->IsWatcomWMake()) {
     // Switch on WMake feature, if an error or interrupt occurs during
@@ -892,9 +875,8 @@ void cmLocalUnixMakefileGenerator3::AppendRuleDepends(
 void cmLocalUnixMakefileGenerator3::AppendCustomDepends(
   std::vector<std::string>& depends, const std::vector<cmCustomCommand>& ccs)
 {
-  for (std::vector<cmCustomCommand>::const_iterator i = ccs.begin();
-       i != ccs.end(); ++i) {
-    cmCustomCommandGenerator ccg(*i, this->ConfigName, this);
+  for (cmCustomCommand const& cc : ccs) {
+    cmCustomCommandGenerator ccg(cc, this->ConfigName, this);
     this->AppendCustomDepend(depends, ccg);
   }
 }
@@ -902,11 +884,10 @@ void cmLocalUnixMakefileGenerator3::AppendCustomDepends(
 void cmLocalUnixMakefileGenerator3::AppendCustomDepend(
   std::vector<std::string>& depends, cmCustomCommandGenerator const& ccg)
 {
-  for (std::vector<std::string>::const_iterator d = ccg.GetDepends().begin();
-       d != ccg.GetDepends().end(); ++d) {
+  for (std::string const& d : ccg.GetDepends()) {
     // Lookup the real name of the dependency in case it is a CMake target.
     std::string dep;
-    if (this->GetRealDependency(*d, this->ConfigName, dep)) {
+    if (this->GetRealDependency(d, this->ConfigName, dep)) {
       depends.push_back(dep);
     }
   }
@@ -916,9 +897,8 @@ void cmLocalUnixMakefileGenerator3::AppendCustomCommands(
   std::vector<std::string>& commands, const std::vector<cmCustomCommand>& ccs,
   cmGeneratorTarget* target, std::string const& relative)
 {
-  for (std::vector<cmCustomCommand>::const_iterator i = ccs.begin();
-       i != ccs.end(); ++i) {
-    cmCustomCommandGenerator ccg(*i, this->ConfigName, this);
+  for (cmCustomCommand const& cc : ccs) {
+    cmCustomCommandGenerator ccg(cc, this->ConfigName, this);
     this->AppendCustomCommand(commands, ccg, target, relative, true);
   }
 }
@@ -950,7 +930,7 @@ void cmLocalUnixMakefileGenerator3::AppendCustomCommand(
     *content << dir;
   }
 
-  CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+  std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
     this->CreateRulePlaceholderExpander());
 
   // Add each command line to the set of commands.
@@ -1089,9 +1069,8 @@ void cmLocalUnixMakefileGenerator3::AppendCleanCommand(
   }
   if (!files.empty()) {
     fout << "file(REMOVE_RECURSE\n";
-    for (std::vector<std::string>::const_iterator f = files.begin();
-         f != files.end(); ++f) {
-      std::string fc = this->MaybeConvertToRelativePath(currentBinDir, *f);
+    for (std::string const& file : files) {
+      std::string fc = this->MaybeConvertToRelativePath(currentBinDir, file);
       fout << "  " << cmOutputConverter::EscapeForCMake(fc) << "\n";
     }
     fout << ")\n";
@@ -1183,10 +1162,10 @@ void cmLocalUnixMakefileGenerator3::AppendEcho(
       }
 
       // Reset the line to emtpy.
-      line = "";
+      line.clear();
 
       // Progress appears only on first line.
-      progress = CM_NULLPTR;
+      progress = nullptr;
 
       // Terminate on end-of-string.
       if (*c == '\0') {
@@ -1454,13 +1433,10 @@ bool cmLocalUnixMakefileGenerator3::ScanDependencies(
   const char* langStr = mf->GetSafeDefinition("CMAKE_DEPENDS_LANGUAGES");
   std::vector<std::string> langs;
   cmSystemTools::ExpandListArgument(langStr, langs);
-  for (std::vector<std::string>::iterator li = langs.begin();
-       li != langs.end(); ++li) {
+  for (std::string const& lang : langs) {
     // construct the checker
-    std::string lang = *li;
-
     // Create the scanner for this language
-    cmDepends* scanner = CM_NULLPTR;
+    cmDepends* scanner = nullptr;
     if (lang == "C" || lang == "CXX" || lang == "RC" || lang == "ASM" ||
         lang == "CUDA") {
       // TODO: Handle RC (resource files) dependencies correctly.
@@ -1562,26 +1538,23 @@ void cmLocalUnixMakefileGenerator3::WriteLocalAllRules(
   this->WriteDivider(ruleFileStream);
   ruleFileStream << "# Targets provided globally by CMake.\n"
                  << "\n";
-  std::vector<cmGeneratorTarget*> targets = this->GetGeneratorTargets();
-  std::vector<cmGeneratorTarget*>::iterator glIt;
-  for (glIt = targets.begin(); glIt != targets.end(); ++glIt) {
-    if ((*glIt)->GetType() == cmStateEnums::GLOBAL_TARGET) {
+  const std::vector<cmGeneratorTarget*>& targets = this->GetGeneratorTargets();
+  for (cmGeneratorTarget* gt : targets) {
+    if (gt->GetType() == cmStateEnums::GLOBAL_TARGET) {
       std::string targetString =
-        "Special rule for the target " + (*glIt)->GetName();
+        "Special rule for the target " + gt->GetName();
       std::vector<std::string> commands;
       std::vector<std::string> depends;
 
-      const char* text = (*glIt)->GetProperty("EchoString");
+      const char* text = gt->GetProperty("EchoString");
       if (!text) {
         text = "Running external command ...";
       }
-      depends.insert(depends.end(), (*glIt)->GetUtilities().begin(),
-                     (*glIt)->GetUtilities().end());
+      depends.insert(depends.end(), gt->GetUtilities().begin(),
+                     gt->GetUtilities().end());
       this->AppendEcho(commands, text,
                        cmLocalUnixMakefileGenerator3::EchoGlobal);
 
-      cmGeneratorTarget* gt = *glIt;
-
       // Global targets store their rules in pre- and post-build commands.
       this->AppendCustomDepends(depends, gt->GetPreBuildCommands());
       this->AppendCustomDepends(depends, gt->GetPostBuildCommands());
@@ -1728,9 +1701,8 @@ void cmLocalUnixMakefileGenerator3::ClearDependencies(cmMakefile* mf,
   // dependencies for that target.
   cmDepends clearer;
   clearer.SetVerbose(verbose);
-  for (std::vector<std::string>::iterator l = files.begin(); l != files.end();
-       ++l) {
-    std::string dir = cmSystemTools::GetFilenamePath(*l);
+  for (std::string const& file : files) {
+    std::string dir = cmSystemTools::GetFilenamePath(file);
 
     // Clear the implicit dependency makefile.
     std::string dependFile = dir + "/depend.make";
@@ -1802,54 +1774,51 @@ void cmLocalUnixMakefileGenerator3::WriteDependLanguageInfo(
   cmakefileStream
     << "# The set of languages for which implicit dependencies are needed:\n";
   cmakefileStream << "set(CMAKE_DEPENDS_LANGUAGES\n";
-  for (ImplicitDependLanguageMap::const_iterator l = implicitLangs.begin();
-       l != implicitLangs.end(); ++l) {
-    cmakefileStream << "  \"" << l->first << "\"\n";
+  for (auto const& implicitLang : implicitLangs) {
+    cmakefileStream << "  \"" << implicitLang.first << "\"\n";
   }
   cmakefileStream << "  )\n";
 
   // now list the files for each language
   cmakefileStream
     << "# The set of files for implicit dependencies of each language:\n";
-  for (ImplicitDependLanguageMap::const_iterator l = implicitLangs.begin();
-       l != implicitLangs.end(); ++l) {
-    cmakefileStream << "set(CMAKE_DEPENDS_CHECK_" << l->first << "\n";
-    ImplicitDependFileMap const& implicitPairs = l->second;
+  for (auto const& implicitLang : implicitLangs) {
+    cmakefileStream << "set(CMAKE_DEPENDS_CHECK_" << implicitLang.first
+                    << "\n";
+    ImplicitDependFileMap const& implicitPairs = implicitLang.second;
 
     // for each file pair
-    for (ImplicitDependFileMap::const_iterator pi = implicitPairs.begin();
-         pi != implicitPairs.end(); ++pi) {
-      for (cmDepends::DependencyVector::const_iterator di = pi->second.begin();
-           di != pi->second.end(); ++di) {
-        cmakefileStream << "  \"" << *di << "\" ";
-        cmakefileStream << "\"" << pi->first << "\"\n";
+    for (auto const& implicitPair : implicitPairs) {
+      for (auto const& di : implicitPair.second) {
+        cmakefileStream << "  \"" << di << "\" ";
+        cmakefileStream << "\"" << implicitPair.first << "\"\n";
       }
     }
     cmakefileStream << "  )\n";
 
     // Tell the dependency scanner what compiler is used.
     std::string cidVar = "CMAKE_";
-    cidVar += l->first;
+    cidVar += implicitLang.first;
     cidVar += "_COMPILER_ID";
     const char* cid = this->Makefile->GetDefinition(cidVar);
     if (cid && *cid) {
-      cmakefileStream << "set(CMAKE_" << l->first << "_COMPILER_ID \"" << cid
-                      << "\")\n";
+      cmakefileStream << "set(CMAKE_" << implicitLang.first
+                      << "_COMPILER_ID \"" << cid << "\")\n";
     }
 
     // Build a list of preprocessor definitions for the target.
     std::set<std::string> defines;
-    this->AddCompileDefinitions(defines, target, this->ConfigName, l->first);
+    this->AddCompileDefinitions(defines, target, this->ConfigName,
+                                implicitLang.first);
     if (!defines.empty()) {
       /* clang-format off */
       cmakefileStream
         << "\n"
         << "# Preprocessor definitions for this target.\n"
-        << "set(CMAKE_TARGET_DEFINITIONS_" << l->first << "\n";
+        << "set(CMAKE_TARGET_DEFINITIONS_" << implicitLang.first << "\n";
       /* clang-format on */
-      for (std::set<std::string>::const_iterator di = defines.begin();
-           di != defines.end(); ++di) {
-        cmakefileStream << "  " << cmOutputConverter::EscapeForCMake(*di)
+      for (std::string const& define : defines) {
+        cmakefileStream << "  " << cmOutputConverter::EscapeForCMake(define)
                         << "\n";
       }
       cmakefileStream << "  )\n";
@@ -1858,21 +1827,21 @@ void cmLocalUnixMakefileGenerator3::WriteDependLanguageInfo(
     // Target-specific include directories:
     cmakefileStream << "\n"
                     << "# The include file search paths:\n";
-    cmakefileStream << "set(CMAKE_" << l->first << "_TARGET_INCLUDE_PATH\n";
+    cmakefileStream << "set(CMAKE_" << implicitLang.first
+                    << "_TARGET_INCLUDE_PATH\n";
     std::vector<std::string> includes;
 
     const std::string& config =
       this->Makefile->GetSafeDefinition("CMAKE_BUILD_TYPE");
-    this->GetIncludeDirectories(includes, target, l->first, config);
+    this->GetIncludeDirectories(includes, target, implicitLang.first, config);
     std::string binaryDir = this->GetState()->GetBinaryDirectory();
     if (this->Makefile->IsOn("CMAKE_DEPENDS_IN_PROJECT_ONLY")) {
       const char* sourceDir = this->GetState()->GetSourceDirectory();
       cmEraseIf(includes, ::NotInProjectDir(sourceDir, binaryDir));
     }
-    for (std::vector<std::string>::iterator i = includes.begin();
-         i != includes.end(); ++i) {
+    for (std::string const& include : includes) {
       cmakefileStream << "  \""
-                      << this->MaybeConvertToRelativePath(binaryDir, *i)
+                      << this->MaybeConvertToRelativePath(binaryDir, include)
                       << "\"\n";
     }
     cmakefileStream << "  )\n";
@@ -1891,10 +1860,8 @@ void cmLocalUnixMakefileGenerator3::WriteDependLanguageInfo(
   }
   if (!transformRules.empty()) {
     cmakefileStream << "set(CMAKE_INCLUDE_TRANSFORMS\n";
-    for (std::vector<std::string>::const_iterator tri = transformRules.begin();
-         tri != transformRules.end(); ++tri) {
-      cmakefileStream << "  " << cmOutputConverter::EscapeForCMake(*tri)
-                      << "\n";
+    for (std::string const& tr : transformRules) {
+      cmakefileStream << "  " << cmOutputConverter::EscapeForCMake(tr) << "\n";
     }
     cmakefileStream << "  )\n";
   }
@@ -2004,10 +1971,9 @@ std::string cmLocalUnixMakefileGenerator3::ConvertToQuotedOutputPath(
 #if defined(_WIN32) && !defined(__CYGWIN__)
     if (!cmSystemTools::GetForceUnixPaths()) {
       slash = "\\";
-      for (std::string::iterator i = components[0].begin();
-           i != components[0].end(); ++i) {
-        if (*i == '/') {
-          *i = '\\';
+      for (char& i : components[0]) {
+        if (i == '/') {
+          i = '\\';
         }
       }
     }
@@ -2106,7 +2072,7 @@ void cmLocalUnixMakefileGenerator3::CreateCDCommand(
     std::string outputForExisting = this->ConvertToOutputForExisting(tgtDir);
     std::string prefix = cd_cmd + outputForExisting + " && ";
     std::transform(commands.begin(), commands.end(), commands.begin(),
-                   std::bind1st(std::plus<std::string>(), prefix));
+                   [&prefix](std::string const& s) { return prefix + s; });
   }
 }
 
diff --git a/Source/cmLocalUnixMakefileGenerator3.h b/Source/cmLocalUnixMakefileGenerator3.h
index f64409cba..b149524b6 100644
--- a/Source/cmLocalUnixMakefileGenerator3.h
+++ b/Source/cmLocalUnixMakefileGenerator3.h
@@ -3,7 +3,7 @@
 #ifndef cmLocalUnixMakefileGenerator3_h
 #define cmLocalUnixMakefileGenerator3_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmDepends.h"
 #include "cmLocalCommonGenerator.h"
@@ -31,14 +31,14 @@ class cmLocalUnixMakefileGenerator3 : public cmLocalCommonGenerator
 {
 public:
   cmLocalUnixMakefileGenerator3(cmGlobalGenerator* gg, cmMakefile* mf);
-  ~cmLocalUnixMakefileGenerator3() CM_OVERRIDE;
+  ~cmLocalUnixMakefileGenerator3() override;
 
-  void ComputeHomeRelativeOutputPath() CM_OVERRIDE;
+  void ComputeHomeRelativeOutputPath() override;
 
   /**
    * Generate the makefile for this directory.
    */
-  void Generate() CM_OVERRIDE;
+  void Generate() override;
 
   // this returns the relative path between the HomeOutputDirectory and this
   // local generators StartOutputDirectory
@@ -88,9 +88,8 @@ public:
                                    const std::string& tgt);
 
   // append flags to a string
-  void AppendFlags(std::string& flags,
-                   const std::string& newFlags) CM_OVERRIDE;
-  void AppendFlags(std::string& flags, const char* newFlags) CM_OVERRIDE;
+  void AppendFlags(std::string& flags, const std::string& newFlags) override;
+  void AppendFlags(std::string& flags, const char* newFlags) override;
 
   // append an echo command
   enum EchoColor
@@ -108,14 +107,13 @@ public:
     std::string Arg;
   };
   void AppendEcho(std::vector<std::string>& commands, std::string const& text,
-                  EchoColor color = EchoNormal,
-                  EchoProgress const* = CM_NULLPTR);
+                  EchoColor color = EchoNormal, EchoProgress const* = nullptr);
 
   /** Get whether the makefile is to have color.  */
   bool GetColorMakefile() const { return this->ColorMakefile; }
 
-  std::string GetTargetDirectory(cmGeneratorTarget const* target) const
-    CM_OVERRIDE;
+  std::string GetTargetDirectory(
+    cmGeneratorTarget const* target) const override;
 
   // create a command that cds to the start dir then runs the commands
   void CreateCDCommand(std::vector<std::string>& commands,
@@ -130,10 +128,10 @@ public:
   /** Called from command-line hook to bring dependencies up to date
       for a target.  */
   bool UpdateDependencies(const char* tgtInfo, bool verbose,
-                          bool color) CM_OVERRIDE;
+                          bool color) override;
 
   /** Called from command-line hook to clear dependencies.  */
-  void ClearDependencies(cmMakefile* mf, bool verbose) CM_OVERRIDE;
+  void ClearDependencies(cmMakefile* mf, bool verbose) override;
 
   /** write some extra rules such as make test etc */
   void WriteSpecialTargetsTop(std::ostream& makefileStream);
@@ -238,11 +236,11 @@ protected:
                            cmGeneratorTarget* target,
                            std::string const& relative,
                            bool echo_comment = false,
-                           std::ostream* content = CM_NULLPTR);
+                           std::ostream* content = nullptr);
   void AppendCleanCommand(std::vector<std::string>& commands,
                           const std::vector<std::string>& files,
                           cmGeneratorTarget* target,
-                          const char* filename = CM_NULLPTR);
+                          const char* filename = nullptr);
 
   // Helper methods for dependeny updates.
   bool ScanDependencies(
@@ -255,7 +253,7 @@ private:
 
   void ComputeObjectFilenames(
     std::map<cmSourceFile const*, std::string>& mapping,
-    cmGeneratorTarget const* gt = CM_NULLPTR) CM_OVERRIDE;
+    cmGeneratorTarget const* gt = nullptr) override;
 
   friend class cmMakefileTargetGenerator;
   friend class cmMakefileExecutableTargetGenerator;
@@ -272,7 +270,7 @@ private:
     cmGeneratorTarget* Target;
     std::string Language;
     LocalObjectEntry()
-      : Target(CM_NULLPTR)
+      : Target(nullptr)
       , Language()
     {
     }
diff --git a/Source/cmLocalVisualStudio10Generator.cxx b/Source/cmLocalVisualStudio10Generator.cxx
index 85d4a73b7..5e81514d4 100644
--- a/Source/cmLocalVisualStudio10Generator.cxx
+++ b/Source/cmLocalVisualStudio10Generator.cxx
@@ -17,7 +17,12 @@ public:
   virtual void CharacterDataHandler(const char* data, int length)
   {
     if (this->DoGUID) {
-      this->GUID.assign(data + 1, length - 2);
+      if (data[0] == '{') {
+        // remove surrounding curly brackets
+        this->GUID.assign(data + 1, length - 2);
+      } else {
+        this->GUID.assign(data, length);
+      }
       this->DoGUID = false;
     }
   }
@@ -60,8 +65,8 @@ cmLocalVisualStudio10Generator::~cmLocalVisualStudio10Generator()
 void cmLocalVisualStudio10Generator::Generate()
 {
 
-  std::vector<cmGeneratorTarget*> tgts = this->GetGeneratorTargets();
-  for (std::vector<cmGeneratorTarget*>::iterator l = tgts.begin();
+  const std::vector<cmGeneratorTarget*>& tgts = this->GetGeneratorTargets();
+  for (std::vector<cmGeneratorTarget*>::const_iterator l = tgts.begin();
        l != tgts.end(); ++l) {
     if ((*l)->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
diff --git a/Source/cmLocalVisualStudio10Generator.h b/Source/cmLocalVisualStudio10Generator.h
index e57dd8f20..4cd56dde3 100644
--- a/Source/cmLocalVisualStudio10Generator.h
+++ b/Source/cmLocalVisualStudio10Generator.h
@@ -3,7 +3,7 @@
 #ifndef cmLocalVisualStudio10Generator_h
 #define cmLocalVisualStudio10Generator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
diff --git a/Source/cmLocalVisualStudio7Generator.cxx b/Source/cmLocalVisualStudio7Generator.cxx
index dd08e5bdb..d8030b7fb 100644
--- a/Source/cmLocalVisualStudio7Generator.cxx
+++ b/Source/cmLocalVisualStudio7Generator.cxx
@@ -62,8 +62,8 @@ cmLocalVisualStudio7Generator::~cmLocalVisualStudio7Generator()
 void cmLocalVisualStudio7Generator::AddHelperCommands()
 {
   // Now create GUIDs for targets
-  std::vector<cmGeneratorTarget*> tgts = this->GetGeneratorTargets();
-  for (std::vector<cmGeneratorTarget*>::iterator l = tgts.begin();
+  const std::vector<cmGeneratorTarget*>& tgts = this->GetGeneratorTargets();
+  for (std::vector<cmGeneratorTarget*>::const_iterator l = tgts.begin();
        l != tgts.end(); ++l) {
     if ((*l)->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
@@ -91,8 +91,9 @@ void cmLocalVisualStudio7Generator::AddCMakeListsRules()
     // specification source changes.
     if (cmSourceFile* sf = this->CreateVCProjBuildRule()) {
       // Add the rule to targets that need it.
-      std::vector<cmGeneratorTarget*> tgts = this->GetGeneratorTargets();
-      for (std::vector<cmGeneratorTarget*>::iterator l = tgts.begin();
+      const std::vector<cmGeneratorTarget*>& tgts =
+        this->GetGeneratorTargets();
+      for (std::vector<cmGeneratorTarget*>::const_iterator l = tgts.begin();
            l != tgts.end(); ++l) {
         if ((*l)->GetType() == cmStateEnums::GLOBAL_TARGET) {
           continue;
@@ -110,8 +111,8 @@ void cmLocalVisualStudio7Generator::FixGlobalTargets()
   // Visual Studio .NET 2003 Service Pack 1 will not run post-build
   // commands for targets in which no sources are built.  Add dummy
   // rules to force these targets to build.
-  std::vector<cmGeneratorTarget*> tgts = this->GetGeneratorTargets();
-  for (std::vector<cmGeneratorTarget*>::iterator l = tgts.begin();
+  const std::vector<cmGeneratorTarget*>& tgts = this->GetGeneratorTargets();
+  for (std::vector<cmGeneratorTarget*>::const_iterator l = tgts.begin();
        l != tgts.end(); l++) {
     if ((*l)->GetType() == cmStateEnums::GLOBAL_TARGET) {
       std::vector<std::string> no_depends;
@@ -120,7 +121,7 @@ void cmLocalVisualStudio7Generator::FixGlobalTargets()
       force_command.push_back(".");
       cmCustomCommandLines force_commands;
       force_commands.push_back(force_command);
-      std::string no_main_dependency = "";
+      std::string no_main_dependency;
       std::string force = this->GetCurrentBinaryDirectory();
       force += cmake::GetCMakeFilesDirectory();
       force += "/";
@@ -150,10 +151,10 @@ void cmLocalVisualStudio7Generator::WriteProjectFiles()
   }
 
   // Get the set of targets in this directory.
-  std::vector<cmGeneratorTarget*> tgts = this->GetGeneratorTargets();
+  const std::vector<cmGeneratorTarget*>& tgts = this->GetGeneratorTargets();
 
   // Create the project file for each target.
-  for (std::vector<cmGeneratorTarget*>::iterator l = tgts.begin();
+  for (std::vector<cmGeneratorTarget*>::const_iterator l = tgts.begin();
        l != tgts.end(); l++) {
     if ((*l)->GetType() == cmStateEnums::INTERFACE_LIBRARY) {
       continue;
@@ -525,6 +526,7 @@ cmVS7FlagTable cmLocalVisualStudio7GeneratorLinkFlagTable[] = {
   { "TargetMachine", "MACHINE:SH5", "Machine SH5", "15", 0 },
   { "TargetMachine", "MACHINE:THUMB", "Machine THUMB", "16", 0 },
   { "TargetMachine", "MACHINE:X64", "Machine x64", "17", 0 },
+  { "TargetMachine", "MACHINE:ARM64", "Machine ARM64", "18", 0 },
   { "TurnOffAssemblyGeneration", "NOASSEMBLY",
     "No assembly even if CLR information is present in objects.", "true", 0 },
   { "ModuleDefinitionFile", "DEF:", "add an export def file", "",
@@ -1451,8 +1453,8 @@ cmLocalVisualStudio7GeneratorFCInfo::cmLocalVisualStudio7GeneratorFCInfo(
     }
     if (const char* cflags = sf.GetProperty("COMPILE_FLAGS")) {
       cmGeneratorExpression ge;
-      CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(cflags);
-      fc.CompileFlags = cge->Evaluate(lg, *i);
+      std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(cflags);
+      fc.CompileFlags = cge->Evaluate(lg, *i, false, gt);
       needfc = true;
     }
     if (lg->FortranProject) {
@@ -1589,7 +1591,7 @@ bool cmLocalVisualStudio7Generator::WriteGroup(
 
   // If the group has a name, write the header.
   std::string name = sg->GetName();
-  if (name != "") {
+  if (!name.empty()) {
     this->WriteVCProjBeginGroup(fout, name.c_str(), "");
   }
 
@@ -1707,7 +1709,7 @@ bool cmLocalVisualStudio7Generator::WriteGroup(
   }
 
   // If the group has a name, write the footer.
-  if (name != "") {
+  if (!name.empty()) {
     this->WriteVCProjEndGroup(fout);
   }
 
@@ -1847,7 +1849,7 @@ void cmLocalVisualStudio7Generator::OutputTargetRules(
   if (!addedPrelink) {
     event.Write(target->GetPreLinkCommands());
   }
-  CM_AUTO_PTR<cmCustomCommand> pcc(
+  std::unique_ptr<cmCustomCommand> pcc(
     this->MaybeCreateImplibDir(target, configName, this->FortranProject));
   if (pcc.get()) {
     event.Write(*pcc);
@@ -2004,7 +2006,7 @@ void cmLocalVisualStudio7Generator::WriteVCProjFooter(
        i != props.end(); ++i) {
     if (i->find("VS_GLOBAL_") == 0) {
       std::string name = i->substr(10);
-      if (name != "") {
+      if (!name.empty()) {
         /* clang-format off */
         fout << "\t\t<Global\n"
              << "\t\t\tName=\"" << name << "\"\n"
@@ -2077,9 +2079,12 @@ public:
         if (strcmp(atts[i], "ProjectGUID") == 0) {
           if (atts[i + 1]) {
             this->GUID = atts[i + 1];
-            this->GUID = this->GUID.substr(1, this->GUID.size() - 2);
+            if (this->GUID[0] == '{') {
+              // remove surrounding curly brackets
+              this->GUID = this->GUID.substr(1, this->GUID.size() - 2);
+            }
           } else {
-            this->GUID = "";
+            this->GUID.clear();
           }
           return;
         }
diff --git a/Source/cmLocalVisualStudio7Generator.h b/Source/cmLocalVisualStudio7Generator.h
index 89a3ee353..7a77574fa 100644
--- a/Source/cmLocalVisualStudio7Generator.h
+++ b/Source/cmLocalVisualStudio7Generator.h
@@ -3,7 +3,7 @@
 #ifndef cmLocalVisualStudio7Generator_h
 #define cmLocalVisualStudio7Generator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <string>
diff --git a/Source/cmLocalVisualStudioGenerator.cxx b/Source/cmLocalVisualStudioGenerator.cxx
index 41025af6c..bbb91e04b 100644
--- a/Source/cmLocalVisualStudioGenerator.cxx
+++ b/Source/cmLocalVisualStudioGenerator.cxx
@@ -78,12 +78,12 @@ void cmLocalVisualStudioGenerator::ComputeObjectFilenames(
   }
 }
 
-CM_AUTO_PTR<cmCustomCommand>
+std::unique_ptr<cmCustomCommand>
 cmLocalVisualStudioGenerator::MaybeCreateImplibDir(cmGeneratorTarget* target,
                                                    const std::string& config,
                                                    bool isFortran)
 {
-  CM_AUTO_PTR<cmCustomCommand> pcc;
+  std::unique_ptr<cmCustomCommand> pcc;
 
   // If an executable exports symbols then VS wants to create an
   // import library but forgets to create the output directory.
@@ -135,7 +135,7 @@ std::string cmLocalVisualStudioGenerator::ConstructScript(
   std::string workingDirectory = ccg.GetWorkingDirectory();
 
   // Avoid leading or trailing newlines.
-  std::string newline = "";
+  std::string newline;
 
   // Line to check for error between commands.
   std::string check_error = newline_text;
@@ -191,13 +191,17 @@ std::string cmLocalVisualStudioGenerator::ConstructScript(
 
   // Write each command on a single line.
   for (unsigned int c = 0; c < ccg.GetNumberOfCommands(); ++c) {
+    // Add this command line.
+    std::string cmd = ccg.GetCommand(c);
+
+    if (cmd.empty()) {
+      continue;
+    }
+
     // Start a new line.
     script += newline;
     newline = newline_text;
 
-    // Add this command line.
-    std::string cmd = ccg.GetCommand(c);
-
     // Use "call " before any invocations of .bat or .cmd files
     // invoked as custom commands.
     //
diff --git a/Source/cmLocalVisualStudioGenerator.h b/Source/cmLocalVisualStudioGenerator.h
index 85fb8a511..cba24fed7 100644
--- a/Source/cmLocalVisualStudioGenerator.h
+++ b/Source/cmLocalVisualStudioGenerator.h
@@ -3,15 +3,14 @@
 #ifndef cmLocalVisualStudioGenerator_h
 #define cmLocalVisualStudioGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <map>
-#include <memory>
+#include <memory> // IWYU pragma: keep
 #include <string>
 
 #include "cmGlobalVisualStudioGenerator.h"
 #include "cmLocalGenerator.h"
-#include "cm_auto_ptr.hxx"
 
 class cmCustomCommand;
 class cmCustomCommandGenerator;
@@ -56,9 +55,8 @@ protected:
   virtual bool CustomCommandUseLocal() const { return false; }
 
   /** Construct a custom command to make exe import lib dir.  */
-  CM_AUTO_PTR<cmCustomCommand> MaybeCreateImplibDir(cmGeneratorTarget* target,
-                                                    const std::string& config,
-                                                    bool isFortran);
+  std::unique_ptr<cmCustomCommand> MaybeCreateImplibDir(
+    cmGeneratorTarget* target, const std::string& config, bool isFortran);
 };
 
 #endif
diff --git a/Source/cmLocalXCodeGenerator.cxx b/Source/cmLocalXCodeGenerator.cxx
index 739ef4367..853e66c23 100644
--- a/Source/cmLocalXCodeGenerator.cxx
+++ b/Source/cmLocalXCodeGenerator.cxx
@@ -42,10 +42,9 @@ void cmLocalXCodeGenerator::Generate()
 {
   cmLocalGenerator::Generate();
 
-  std::vector<cmGeneratorTarget*> targets = this->GetGeneratorTargets();
-  for (std::vector<cmGeneratorTarget*>::iterator iter = targets.begin();
-       iter != targets.end(); ++iter) {
-    (*iter)->HasMacOSXRpathInstallNameDir("");
+  const std::vector<cmGeneratorTarget*>& targets = this->GetGeneratorTargets();
+  for (auto target : targets) {
+    target->HasMacOSXRpathInstallNameDir("");
   }
 }
 
@@ -53,10 +52,9 @@ void cmLocalXCodeGenerator::GenerateInstallRules()
 {
   cmLocalGenerator::GenerateInstallRules();
 
-  std::vector<cmGeneratorTarget*> targets = this->GetGeneratorTargets();
-  for (std::vector<cmGeneratorTarget*>::iterator iter = targets.begin();
-       iter != targets.end(); ++iter) {
-    (*iter)->HasMacOSXRpathInstallNameDir("");
+  const std::vector<cmGeneratorTarget*>& targets = this->GetGeneratorTargets();
+  for (auto target : targets) {
+    target->HasMacOSXRpathInstallNameDir("");
   }
 }
 
@@ -69,10 +67,8 @@ void cmLocalXCodeGenerator::ComputeObjectFilenames(
   // to avoid exact duplicate file names. Note that Mac file names are not
   // typically case sensitive, hence the LowerCase.
   std::map<std::string, int> counts;
-  for (std::map<cmSourceFile const*, std::string>::iterator si =
-         mapping.begin();
-       si != mapping.end(); ++si) {
-    cmSourceFile const* sf = si->first;
+  for (auto& si : mapping) {
+    cmSourceFile const* sf = si.first;
     std::string objectName =
       cmSystemTools::GetFilenameWithoutLastExtension(sf->GetFullPath());
     objectName += ".o";
@@ -82,6 +78,6 @@ void cmLocalXCodeGenerator::ComputeObjectFilenames(
     if (2 == counts[objectNameLower]) {
       // TODO: emit warning about duplicate name?
     }
-    si->second = objectName;
+    si.second = objectName;
   }
 }
diff --git a/Source/cmLocalXCodeGenerator.h b/Source/cmLocalXCodeGenerator.h
index 4ca02a9d0..8c9596f85 100644
--- a/Source/cmLocalXCodeGenerator.h
+++ b/Source/cmLocalXCodeGenerator.h
@@ -27,16 +27,16 @@ public:
   ///! Set cache only and recurse to false by default.
   cmLocalXCodeGenerator(cmGlobalGenerator* gg, cmMakefile* mf);
 
-  virtual ~cmLocalXCodeGenerator();
-  virtual std::string GetTargetDirectory(
-    cmGeneratorTarget const* target) const;
-  virtual void AppendFlagEscape(std::string& flags,
-                                const std::string& rawFlag);
-  virtual void Generate();
+  ~cmLocalXCodeGenerator() override;
+  std::string GetTargetDirectory(
+    cmGeneratorTarget const* target) const override;
+  void AppendFlagEscape(std::string& flags,
+                        const std::string& rawFlag) override;
+  void Generate() override;
   virtual void GenerateInstallRules();
-  virtual void ComputeObjectFilenames(
+  void ComputeObjectFilenames(
     std::map<cmSourceFile const*, std::string>& mapping,
-    cmGeneratorTarget const* gt = 0);
+    cmGeneratorTarget const* gt = nullptr) override;
 
 private:
 };
diff --git a/Source/cmLocale.h b/Source/cmLocale.h
index 9f90a3a99..174f0f0f2 100644
--- a/Source/cmLocale.h
+++ b/Source/cmLocale.h
@@ -3,7 +3,7 @@
 #ifndef cmLocale_h
 #define cmLocale_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <locale.h>
 #include <string>
@@ -14,7 +14,7 @@ class cmLocaleRAII
 
 public:
   cmLocaleRAII()
-    : OldLocale(setlocale(LC_CTYPE, CM_NULLPTR))
+    : OldLocale(setlocale(LC_CTYPE, nullptr))
   {
     setlocale(LC_CTYPE, "");
   }
diff --git a/Source/cmMSVC60LinkLineComputer.h b/Source/cmMSVC60LinkLineComputer.h
index f2892d53f..31223ecd4 100644
--- a/Source/cmMSVC60LinkLineComputer.h
+++ b/Source/cmMSVC60LinkLineComputer.h
@@ -4,7 +4,7 @@
 #ifndef cmMSVC60LinkLineComputer_h
 #define cmMSVC60LinkLineComputer_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
@@ -21,8 +21,7 @@ public:
   cmMSVC60LinkLineComputer(cmOutputConverter* outputConverter,
                            cmStateDirectory const& stateDir);
 
-  std::string ConvertToLinkReference(std::string const& input) const
-    CM_OVERRIDE;
+  std::string ConvertToLinkReference(std::string const& input) const override;
 };
 
 #endif
diff --git a/Source/cmMachO.cxx b/Source/cmMachO.cxx
index a4350f7ce..7294c1cbf 100644
--- a/Source/cmMachO.cxx
+++ b/Source/cmMachO.cxx
@@ -134,7 +134,7 @@ public:
     : cmMachOHeaderAndLoadCommands(_swap)
   {
   }
-  bool read_mach_o(cmsys::ifstream& fin)
+  bool read_mach_o(cmsys::ifstream& fin) override
   {
     if (!read(fin, this->Header)) {
       return false;
@@ -251,8 +251,7 @@ cmMachOInternal::cmMachOInternal(const char* fname)
     }
 
     // parse each Mach-O file
-    for (size_t i = 0; i < this->FatArchs.size(); i++) {
-      const fat_arch& arch = this->FatArchs[i];
+    for (const auto& arch : this->FatArchs) {
       if (!this->read_mach_o(OSSwapBigToHostInt32(arch.offset))) {
         return;
       }
@@ -265,8 +264,8 @@ cmMachOInternal::cmMachOInternal(const char* fname)
 
 cmMachOInternal::~cmMachOInternal()
 {
-  for (size_t i = 0; i < this->MachOList.size(); i++) {
-    delete this->MachOList[i];
+  for (auto& i : this->MachOList) {
+    delete i;
   }
 }
 
@@ -283,7 +282,7 @@ bool cmMachOInternal::read_mach_o(uint32_t file_offset)
     return false;
   }
 
-  cmMachOHeaderAndLoadCommands* f = NULL;
+  cmMachOHeaderAndLoadCommands* f = nullptr;
   if (magic == MH_CIGAM || magic == MH_MAGIC) {
     bool swap = false;
     if (magic == MH_CIGAM) {
@@ -313,7 +312,7 @@ bool cmMachOInternal::read_mach_o(uint32_t file_offset)
 // External class implementation.
 
 cmMachO::cmMachO(const char* fname)
-  : Internal(0)
+  : Internal(nullptr)
 {
   this->Internal = new cmMachOInternal(fname);
 }
diff --git a/Source/cmMachO.h b/Source/cmMachO.h
index 42745cf60..aa17c6a77 100644
--- a/Source/cmMachO.h
+++ b/Source/cmMachO.h
@@ -3,7 +3,7 @@
 #ifndef cmMachO_h
 #define cmMachO_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <string>
diff --git a/Source/cmMacroCommand.cxx b/Source/cmMacroCommand.cxx
index a6a9ea316..74a1da00e 100644
--- a/Source/cmMacroCommand.cxx
+++ b/Source/cmMacroCommand.cxx
@@ -19,12 +19,12 @@ public:
   cmMacroHelperCommand() {}
 
   ///! clean up any memory allocated by the macro
-  ~cmMacroHelperCommand() CM_OVERRIDE {}
+  ~cmMacroHelperCommand() override {}
 
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     cmMacroHelperCommand* newC = new cmMacroHelperCommand;
     // we must copy when we clone
@@ -40,10 +40,10 @@ public:
    * the CMakeLists.txt file.
    */
   bool InvokeInitialPass(const std::vector<cmListFileArgument>& args,
-                         cmExecutionStatus&) CM_OVERRIDE;
+                         cmExecutionStatus&) override;
 
   bool InitialPass(std::vector<std::string> const&,
-                   cmExecutionStatus&) CM_OVERRIDE
+                   cmExecutionStatus&) override
   {
     return false;
   }
@@ -98,20 +98,18 @@ bool cmMacroHelperCommand::InvokeInitialPass(
   // Invoke all the functions that were collected in the block.
   cmListFileFunction newLFF;
   // for each function
-  for (unsigned int c = 0; c < this->Functions.size(); ++c) {
+  for (cmListFileFunction const& func : this->Functions) {
     // Replace the formal arguments and then invoke the command.
     newLFF.Arguments.clear();
-    newLFF.Arguments.reserve(this->Functions[c].Arguments.size());
-    newLFF.Name = this->Functions[c].Name;
-    newLFF.Line = this->Functions[c].Line;
+    newLFF.Arguments.reserve(func.Arguments.size());
+    newLFF.Name = func.Name;
+    newLFF.Line = func.Line;
 
     // for each argument of the current function
-    for (std::vector<cmListFileArgument>::iterator k =
-           this->Functions[c].Arguments.begin();
-         k != this->Functions[c].Arguments.end(); ++k) {
+    for (cmListFileArgument const& k : func.Arguments) {
       cmListFileArgument arg;
-      arg.Value = k->Value;
-      if (k->Delim != cmListFileArgument::Bracket) {
+      arg.Value = k.Value;
+      if (k.Delim != cmListFileArgument::Bracket) {
         // replace formal arguments
         for (unsigned int j = 0; j < variables.size(); ++j) {
           cmSystemTools::ReplaceString(arg.Value, variables[j],
@@ -131,8 +129,8 @@ bool cmMacroHelperCommand::InvokeInitialPass(
           }
         }
       }
-      arg.Delim = k->Delim;
-      arg.Line = k->Line;
+      arg.Delim = k.Delim;
+      arg.Line = k.Line;
       newLFF.Arguments.push_back(arg);
     }
     cmExecutionStatus status;
diff --git a/Source/cmMacroCommand.h b/Source/cmMacroCommand.h
index 0d35fe06e..d967388bf 100644
--- a/Source/cmMacroCommand.h
+++ b/Source/cmMacroCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmMacroCommand_h
 #define cmMacroCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -19,10 +19,10 @@ class cmMacroFunctionBlocker : public cmFunctionBlocker
 {
 public:
   cmMacroFunctionBlocker() { this->Depth = 0; }
-  ~cmMacroFunctionBlocker() CM_OVERRIDE {}
+  ~cmMacroFunctionBlocker() override {}
   bool IsFunctionBlocked(const cmListFileFunction&, cmMakefile& mf,
-                         cmExecutionStatus&) CM_OVERRIDE;
-  bool ShouldRemove(const cmListFileFunction&, cmMakefile& mf) CM_OVERRIDE;
+                         cmExecutionStatus&) override;
+  bool ShouldRemove(const cmListFileFunction&, cmMakefile& mf) override;
 
   std::vector<std::string> Args;
   std::vector<cmListFileFunction> Functions;
@@ -36,14 +36,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmMacroCommand; }
+  cmCommand* Clone() override { return new cmMacroCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmMakeDirectoryCommand.h b/Source/cmMakeDirectoryCommand.h
index af72eab96..d2637f388 100644
--- a/Source/cmMakeDirectoryCommand.h
+++ b/Source/cmMakeDirectoryCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmMakeDirectoryCommand_h
 #define cmMakeDirectoryCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -27,14 +27,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmMakeDirectoryCommand; }
+  cmCommand* Clone() override { return new cmMakeDirectoryCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmMakefile.cxx b/Source/cmMakefile.cxx
index 608b18a46..5643c978d 100644
--- a/Source/cmMakefile.cxx
+++ b/Source/cmMakefile.cxx
@@ -7,6 +7,7 @@
 #include <algorithm>
 #include <assert.h>
 #include <ctype.h>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdlib.h>
 #include <string.h>
@@ -37,7 +38,6 @@
 #include "cmTestGenerator.h" // IWYU pragma: keep
 #include "cmVersion.h"
 #include "cmWorkingDirectory.h"
-#include "cm_auto_ptr.hxx"
 #include "cm_sys_stat.h"
 #include "cmake.h"
 
@@ -66,8 +66,8 @@ cmMakefile::cmMakefile(cmGlobalGenerator* globalGenerator,
 
   this->DefineFlags = " ";
 
-  this->cmDefineRegex.compile("#cmakedefine[ \t]+([A-Za-z_0-9]*)");
-  this->cmDefine01Regex.compile("#cmakedefine01[ \t]+([A-Za-z_0-9]*)");
+  this->cmDefineRegex.compile("#([ \t]*)cmakedefine[ \t]+([A-Za-z_0-9]*)");
+  this->cmDefine01Regex.compile("#([ \t]*)cmakedefine01[ \t]+([A-Za-z_0-9]*)");
   this->cmAtVarRegex.compile("(@[A-Za-z_0-9/.+-]+@)");
   this->cmNamedCurly.compile("^[A-Za-z0-9/_.+-]+{");
 
@@ -87,12 +87,10 @@ cmMakefile::cmMakefile(cmGlobalGenerator* globalGenerator,
 
 #if defined(CMAKE_BUILD_WITH_CMAKE)
   this->AddSourceGroup("", "^.*$");
-  this->AddSourceGroup("Source Files",
-                       "\\.(C|M|c|c\\+\\+|cc|cpp|cxx|f|f90|for|fpp"
-                       "|ftn|m|mm|rc|def|r|odl|idl|hpj|bat)$");
+  this->AddSourceGroup("Source Files", CM_SOURCE_REGEX);
   this->AddSourceGroup("Header Files", CM_HEADER_REGEX);
   this->AddSourceGroup("CMake Rules", "\\.rule$");
-  this->AddSourceGroup("Resources", "\\.plist$");
+  this->AddSourceGroup("Resources", CM_RESOURCE_REGEX);
   this->AddSourceGroup("Object Files", "\\.(lo|o|obj)$");
 
   this->ObjectLibrariesSourceGroupIndex = this->SourceGroups.size();
@@ -208,15 +206,13 @@ void cmMakefile::PrintCommandTrace(const cmListFileFunction& lff) const
   msg << lff.Name << "(";
   bool expand = this->GetCMakeInstance()->GetTraceExpand();
   std::string temp;
-  for (std::vector<cmListFileArgument>::const_iterator i =
-         lff.Arguments.begin();
-       i != lff.Arguments.end(); ++i) {
+  for (cmListFileArgument const& arg : lff.Arguments) {
     if (expand) {
-      temp = i->Value;
+      temp = arg.Value;
       this->ExpandVariablesInString(temp);
       msg << temp;
     } else {
-      msg << i->Value;
+      msg << arg.Value;
     }
     msg << " ";
   }
@@ -268,7 +264,7 @@ bool cmMakefile::ExecuteCommand(const cmListFileFunction& lff,
   // Lookup the command prototype.
   if (cmCommand* proto = this->GetState()->GetCommand(name)) {
     // Clone the prototype.
-    CM_AUTO_PTR<cmCommand> pcmd(proto->Clone());
+    std::unique_ptr<cmCommand> pcmd(proto->Clone());
     pcmd->SetMakefile(this);
 
     // Decide whether to invoke the command.
@@ -588,11 +584,13 @@ void cmMakefile::EnforceDirectoryLevelRules() const
 
 void cmMakefile::AddEvaluationFile(
   const std::string& inputFile,
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> outputName,
-  CM_AUTO_PTR<cmCompiledGeneratorExpression> condition, bool inputIsContent)
+  std::unique_ptr<cmCompiledGeneratorExpression> outputName,
+  std::unique_ptr<cmCompiledGeneratorExpression> condition,
+  bool inputIsContent)
 {
   this->EvaluationFiles.push_back(new cmGeneratorExpressionEvaluationFile(
-    inputFile, outputName, condition, inputIsContent));
+    inputFile, std::move(outputName), std::move(condition), inputIsContent,
+    this->GetPolicyStatus(cmPolicies::CMP0070)));
 }
 
 std::vector<cmGeneratorExpressionEvaluationFile*>
@@ -641,9 +639,8 @@ void cmMakefile::FinalPass()
 
   // give all the commands a chance to do something
   // after the file has been parsed before generation
-  for (std::vector<cmCommand*>::iterator i = this->FinalPassCommands.begin();
-       i != this->FinalPassCommands.end(); ++i) {
-    (*i)->FinalPass();
+  for (cmCommand* fpCommand : this->FinalPassCommands) {
+    fpCommand->FinalPass();
   }
 
   // go through all configured files and see which ones still exist.
@@ -740,9 +737,8 @@ void cmMakefile::AddCustomCommandToTarget(
   }
 
   // Always create the byproduct sources and mark them generated.
-  for (std::vector<std::string>::const_iterator o = byproducts.begin();
-       o != byproducts.end(); ++o) {
-    if (cmSourceFile* out = this->GetOrCreateSource(*o, true)) {
+  for (std::string const& o : byproducts) {
+    if (cmSourceFile* out = this->GetOrCreateSource(o, true)) {
       out->SetProperty("GENERATED", "1");
     }
   }
@@ -780,23 +776,21 @@ cmSourceFile* cmMakefile::AddCustomCommandToOutput(
   // Make sure there is at least one output.
   if (outputs.empty()) {
     cmSystemTools::Error("Attempt to add a custom rule with no output!");
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   // Validate custom commands.  TODO: More strict?
-  for (cmCustomCommandLines::const_iterator i = commandLines.begin();
-       i != commandLines.end(); ++i) {
-    cmCustomCommandLine const& cl = *i;
+  for (cmCustomCommandLine const& cl : commandLines) {
     if (!cl.empty() && !cl[0].empty() && cl[0][0] == '"') {
       std::ostringstream e;
       e << "COMMAND may not contain literal quotes:\n  " << cl[0] << "\n";
       this->IssueMessage(cmake::FATAL_ERROR, e.str());
-      return CM_NULLPTR;
+      return nullptr;
     }
   }
 
   // Choose a source file on which to store the custom command.
-  cmSourceFile* file = CM_NULLPTR;
+  cmSourceFile* file = nullptr;
   if (!commandLines.empty() && !main_dependency.empty()) {
     // The main dependency was specified.  Use it unless a different
     // custom command already used it.
@@ -810,7 +804,7 @@ cmSourceFile* cmMakefile::AddCustomCommandToOutput(
       }
       // The existing custom command is different.  We need to
       // generate a rule file for this new command.
-      file = CM_NULLPTR;
+      file = nullptr;
     } else if (!file) {
       file = this->CreateSource(main_dependency);
     }
@@ -843,15 +837,13 @@ cmSourceFile* cmMakefile::AddCustomCommandToOutput(
   }
 
   // Always create the output sources and mark them generated.
-  for (std::vector<std::string>::const_iterator o = outputs.begin();
-       o != outputs.end(); ++o) {
-    if (cmSourceFile* out = this->GetOrCreateSource(*o, true)) {
+  for (std::string const& o : outputs) {
+    if (cmSourceFile* out = this->GetOrCreateSource(o, true)) {
       out->SetProperty("GENERATED", "1");
     }
   }
-  for (std::vector<std::string>::const_iterator o = byproducts.begin();
-       o != byproducts.end(); ++o) {
-    if (cmSourceFile* out = this->GetOrCreateSource(*o, true)) {
+  for (std::string const& o : byproducts) {
+    if (cmSourceFile* out = this->GetOrCreateSource(o, true)) {
       out->SetProperty("GENERATED", "1");
     }
   }
@@ -880,9 +872,8 @@ cmSourceFile* cmMakefile::AddCustomCommandToOutput(
 void cmMakefile::UpdateOutputToSourceMap(
   std::vector<std::string> const& outputs, cmSourceFile* source)
 {
-  for (std::vector<std::string>::const_iterator o = outputs.begin();
-       o != outputs.end(); ++o) {
-    this->UpdateOutputToSourceMap(*o, source);
+  for (std::string const& o : outputs) {
+    this->UpdateOutputToSourceMap(o, source);
   }
 }
 
@@ -934,7 +925,7 @@ void cmMakefile::AddCustomCommandOldStyle(
     std::vector<std::string> no_byproducts;
     this->AddCustomCommandToTarget(target, no_byproducts, depends,
                                    commandLines, cmTarget::POST_BUILD, comment,
-                                   CM_NULLPTR);
+                                   nullptr);
     return;
   }
 
@@ -942,24 +933,23 @@ void cmMakefile::AddCustomCommandOldStyle(
   cmsys::RegularExpression sourceFiles("\\.(C|M|c|c\\+\\+|cc|cpp|cxx|m|mm|"
                                        "rc|def|r|odl|idl|hpj|bat|h|h\\+\\+|"
                                        "hm|hpp|hxx|in|txx|inl)$");
-  for (std::vector<std::string>::const_iterator oi = outputs.begin();
-       oi != outputs.end(); ++oi) {
+  for (std::string const& oi : outputs) {
     // Get the name of this output.
-    const char* output = oi->c_str();
+    const char* output = oi.c_str();
     cmSourceFile* sf;
 
     // Choose whether to use a main dependency.
     if (sourceFiles.find(source)) {
       // The source looks like a real file.  Use it as the main dependency.
       sf = this->AddCustomCommandToOutput(output, depends, source,
-                                          commandLines, comment, CM_NULLPTR);
+                                          commandLines, comment, nullptr);
     } else {
       // The source may not be a real file.  Do not use a main dependency.
       std::string no_main_dependency;
       std::vector<std::string> depends2 = depends;
       depends2.push_back(source);
       sf = this->AddCustomCommandToOutput(output, depends2, no_main_dependency,
-                                          commandLines, comment, CM_NULLPTR);
+                                          commandLines, comment, nullptr);
     }
 
     // If the rule was added to the source (and not a .rule file),
@@ -1063,9 +1053,8 @@ cmTarget* cmMakefile::AddUtilityCommand(
     }
 
     // Always create the byproduct sources and mark them generated.
-    for (std::vector<std::string>::const_iterator o = byproducts.begin();
-         o != byproducts.end(); ++o) {
-      if (cmSourceFile* out = this->GetOrCreateSource(*o, true)) {
+    for (std::string const& byproduct : byproducts) {
+      if (cmSourceFile* out = this->GetOrCreateSource(byproduct, true)) {
         out->SetProperty("GENERATED", "1");
       }
     }
@@ -1227,15 +1216,17 @@ void cmMakefile::InitializeFromParent(cmMakefile* parent)
                       parent->GetProperty("COMPILE_DEFINITIONS"));
     std::vector<std::string> configs;
     this->GetConfigurations(configs);
-    for (std::vector<std::string>::const_iterator ci = configs.begin();
-         ci != configs.end(); ++ci) {
+    for (std::string const& config : configs) {
       std::string defPropName = "COMPILE_DEFINITIONS_";
-      defPropName += cmSystemTools::UpperCase(*ci);
+      defPropName += cmSystemTools::UpperCase(config);
       const char* prop = parent->GetProperty(defPropName);
       this->SetProperty(defPropName, prop);
     }
   }
 
+  // labels
+  this->SetProperty("LABELS", parent->GetProperty("LABELS"));
+
   // link libraries
   this->SetProperty("LINK_LIBRARIES", parent->GetProperty("LINK_LIBRARIES"));
 
@@ -1389,10 +1380,8 @@ void cmMakefile::Configure()
   if (this->IsRootMakefile()) {
     bool hasVersion = false;
     // search for the right policy command
-    for (std::vector<cmListFileFunction>::iterator i =
-           listFile.Functions.begin();
-         i != listFile.Functions.end(); ++i) {
-      if (cmSystemTools::LowerCase(i->Name) == "cmake_minimum_required") {
+    for (cmListFileFunction const& func : listFile.Functions) {
+      if (cmSystemTools::LowerCase(func.Name) == "cmake_minimum_required") {
         hasVersion = true;
         break;
       }
@@ -1418,10 +1407,8 @@ void cmMakefile::Configure()
         allowedCommands.insert("option");
         allowedCommands.insert("message");
         isProblem = false;
-        for (std::vector<cmListFileFunction>::iterator i =
-               listFile.Functions.begin();
-             i != listFile.Functions.end(); ++i) {
-          std::string name = cmSystemTools::LowerCase(i->Name);
+        for (cmListFileFunction const& func : listFile.Functions) {
+          std::string name = cmSystemTools::LowerCase(func.Name);
           if (allowedCommands.find(name) == allowedCommands.end()) {
             isProblem = true;
             break;
@@ -1440,10 +1427,8 @@ void cmMakefile::Configure()
     }
     bool hasProject = false;
     // search for a project command
-    for (std::vector<cmListFileFunction>::iterator i =
-           listFile.Functions.begin();
-         i != listFile.Functions.end(); ++i) {
-      if (cmSystemTools::LowerCase(i->Name) == "project") {
+    for (cmListFileFunction const& func : listFile.Functions) {
+      if (cmSystemTools::LowerCase(func.Name) == "project") {
         hasProject = true;
         break;
       }
@@ -1575,9 +1560,8 @@ std::vector<cmTarget*> cmMakefile::GetImportedTargets() const
 {
   std::vector<cmTarget*> tgts;
   tgts.reserve(this->ImportedTargets.size());
-  for (TargetMap::const_iterator it = this->ImportedTargets.begin();
-       it != this->ImportedTargets.end(); ++it) {
-    tgts.push_back(it->second);
+  for (auto const& impTarget : this->ImportedTargets) {
+    tgts.push_back(impTarget.second);
   }
   return tgts;
 }
@@ -1600,9 +1584,8 @@ void cmMakefile::AddIncludeDirectories(const std::vector<std::string>& incs,
   }
 
   // Property on each target:
-  for (cmTargets::iterator l = this->Targets.begin(); l != this->Targets.end();
-       ++l) {
-    cmTarget& t = l->second;
+  for (auto& target : this->Targets) {
+    cmTarget& t = target.second;
     t.InsertInclude(entryString, lfbt, before);
   }
 }
@@ -1615,9 +1598,8 @@ void cmMakefile::AddSystemIncludeDirectories(const std::set<std::string>& incs)
 
   this->SystemIncludeDirectories.insert(incs.begin(), incs.end());
 
-  for (cmTargets::iterator l = this->Targets.begin(); l != this->Targets.end();
-       ++l) {
-    cmTarget& t = l->second;
+  for (auto& target : this->Targets) {
+    cmTarget& t = target.second;
     t.AddSystemIncludeDirectories(incs);
   }
 }
@@ -1664,7 +1646,7 @@ void cmMakefile::AddCacheDefinition(const std::string& name, const char* value,
       nvalue = value ? value : "";
 
       cmSystemTools::ExpandListArgument(nvalue, files);
-      nvalue = "";
+      nvalue.clear();
       for (cc = 0; cc < files.size(); cc++) {
         if (!cmSystemTools::IsOff(files[cc].c_str())) {
           files[cc] = cmSystemTools::CollapseFullPath(files[cc]);
@@ -1757,7 +1739,7 @@ void cmMakefile::RemoveDefinition(const std::string& name)
   cmVariableWatch* vv = this->GetVariableWatch();
   if (vv) {
     vv->VariableAccessed(name, cmVariableWatch::VARIABLE_REMOVED_ACCESS,
-                         CM_NULLPTR, this);
+                         nullptr, this);
   }
 #endif
 }
@@ -1786,14 +1768,13 @@ void cmMakefile::AddGlobalLinkInformation(cmTarget& target)
     std::vector<std::string> linkDirs;
     cmSystemTools::ExpandListArgument(linkDirsProp, linkDirs);
 
-    for (std::vector<std::string>::iterator j = linkDirs.begin();
-         j != linkDirs.end(); ++j) {
-      std::string newdir = *j;
+    for (std::string const& linkDir : linkDirs) {
+      std::string newdir = linkDir;
       // remove trailing slashes
-      if (*j->rbegin() == '/') {
-        newdir = j->substr(0, j->size() - 1);
+      if (*linkDir.rbegin() == '/') {
+        newdir = linkDir.substr(0, linkDir.size() - 1);
       }
-      target.AddLinkDirectory(*j);
+      target.AddLinkDirectory(linkDir);
     }
   }
 
@@ -1886,29 +1867,26 @@ cmSourceFile* cmMakefile::LinearGetSourceFileWithOutput(
 
   // look through all the source files that have custom commands
   // and see if the custom command has the passed source file as an output
-  for (std::vector<cmSourceFile*>::const_iterator i =
-         this->SourceFiles.begin();
-       i != this->SourceFiles.end(); ++i) {
+  for (cmSourceFile* src : this->SourceFiles) {
     // does this source file have a custom command?
-    if ((*i)->GetCustomCommand()) {
+    if (src->GetCustomCommand()) {
       // Does the output of the custom command match the source file name?
       const std::vector<std::string>& outputs =
-        (*i)->GetCustomCommand()->GetOutputs();
-      for (std::vector<std::string>::const_iterator o = outputs.begin();
-           o != outputs.end(); ++o) {
-        out = *o;
+        src->GetCustomCommand()->GetOutputs();
+      for (std::string const& output : outputs) {
+        out = output;
         std::string::size_type pos = out.rfind(name);
         // If the output matches exactly
         if (pos != std::string::npos && pos == out.size() - name.size() &&
             (pos == 0 || out[pos - 1] == '/')) {
-          return *i;
+          return src;
         }
       }
     }
   }
 
   // otherwise return NULL
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmSourceFile* cmMakefile::GetSourceFileWithOutput(
@@ -1924,31 +1902,29 @@ cmSourceFile* cmMakefile::GetSourceFileWithOutput(
   if (o != this->OutputToSource.end()) {
     return (*o).second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 #if defined(CMAKE_BUILD_WITH_CMAKE)
 cmSourceGroup* cmMakefile::GetSourceGroup(
   const std::vector<std::string>& name) const
 {
-  cmSourceGroup* sg = CM_NULLPTR;
+  cmSourceGroup* sg = nullptr;
 
   // first look for source group starting with the same as the one we want
-  for (std::vector<cmSourceGroup>::const_iterator sgIt =
-         this->SourceGroups.begin();
-       sgIt != this->SourceGroups.end(); ++sgIt) {
-    std::string sgName = sgIt->GetName();
+  for (cmSourceGroup const& srcGroup : this->SourceGroups) {
+    std::string sgName = srcGroup.GetName();
     if (sgName == name[0]) {
-      sg = const_cast<cmSourceGroup*>(&(*sgIt));
+      sg = const_cast<cmSourceGroup*>(&srcGroup);
       break;
     }
   }
 
-  if (sg != CM_NULLPTR) {
+  if (sg != nullptr) {
     // iterate through its children to find match source group
     for (unsigned int i = 1; i < name.size(); ++i) {
       sg = sg->LookupChild(name[i].c_str());
-      if (sg == CM_NULLPTR) {
+      if (sg == nullptr) {
         break;
       }
     }
@@ -1966,14 +1942,14 @@ void cmMakefile::AddSourceGroup(const std::string& name, const char* regex)
 void cmMakefile::AddSourceGroup(const std::vector<std::string>& name,
                                 const char* regex)
 {
-  cmSourceGroup* sg = CM_NULLPTR;
+  cmSourceGroup* sg = nullptr;
   std::vector<std::string> currentName;
   int i = 0;
   const int lastElement = static_cast<int>(name.size() - 1);
   for (i = lastElement; i >= 0; --i) {
     currentName.assign(name.begin(), name.begin() + i + 1);
     sg = this->GetSourceGroup(currentName);
-    if (sg != CM_NULLPTR) {
+    if (sg != nullptr) {
       break;
     }
   }
@@ -2001,14 +1977,65 @@ void cmMakefile::AddSourceGroup(const std::vector<std::string>& name,
   }
   // build the whole source group path
   for (++i; i <= lastElement; ++i) {
-    sg->AddChild(
-      cmSourceGroup(name[i].c_str(), CM_NULLPTR, sg->GetFullName()));
+    sg->AddChild(cmSourceGroup(name[i].c_str(), nullptr, sg->GetFullName()));
     sg = sg->LookupChild(name[i].c_str());
   }
 
   sg->SetGroupRegex(regex);
 }
 
+cmSourceGroup* cmMakefile::GetOrCreateSourceGroup(
+  const std::vector<std::string>& folders)
+{
+  cmSourceGroup* sg = this->GetSourceGroup(folders);
+  if (sg == nullptr) {
+    this->AddSourceGroup(folders);
+    sg = this->GetSourceGroup(folders);
+  }
+  return sg;
+}
+
+cmSourceGroup* cmMakefile::GetOrCreateSourceGroup(const std::string& name)
+{
+  const char* delimiter = this->GetDefinition("SOURCE_GROUP_DELIMITER");
+  if (delimiter == nullptr) {
+    delimiter = "\\";
+  }
+  return this->GetOrCreateSourceGroup(
+    cmSystemTools::tokenize(name, delimiter));
+}
+
+/**
+ * Find a source group whose regular expression matches the filename
+ * part of the given source name.  Search backward through the list of
+ * source groups, and take the first matching group found.  This way
+ * non-inherited SOURCE_GROUP commands will have precedence over
+ * inherited ones.
+ */
+cmSourceGroup* cmMakefile::FindSourceGroup(
+  const char* source, std::vector<cmSourceGroup>& groups) const
+{
+  // First search for a group that lists the file explicitly.
+  for (std::vector<cmSourceGroup>::reverse_iterator sg = groups.rbegin();
+       sg != groups.rend(); ++sg) {
+    cmSourceGroup* result = sg->MatchChildrenFiles(source);
+    if (result) {
+      return result;
+    }
+  }
+
+  // Now search for a group whose regex matches the file.
+  for (std::vector<cmSourceGroup>::reverse_iterator sg = groups.rbegin();
+       sg != groups.rend(); ++sg) {
+    cmSourceGroup* result = sg->MatchChildrenRegex(source);
+    if (result) {
+      return result;
+    }
+  }
+
+  // Shouldn't get here, but just in case, return the default group.
+  return &groups.front();
+}
 #endif
 
 static bool mightExpandVariablesCMP0019(const char* s)
@@ -2041,9 +2068,8 @@ void cmMakefile::ExpandVariablesCMP0019()
   }
 
   // Also for each target's INCLUDE_DIRECTORIES property:
-  for (cmTargets::iterator l = this->Targets.begin(); l != this->Targets.end();
-       ++l) {
-    cmTarget& t = l->second;
+  for (auto& target : this->Targets) {
+    cmTarget& t = target.second;
     if (t.GetType() == cmStateEnums::INTERFACE_LIBRARY ||
         t.GetType() == cmStateEnums::GLOBAL_TARGET) {
       continue;
@@ -2190,9 +2216,9 @@ bool cmMakefile::PlatformIsAppleIos() const
     "iphonesimulator", "watchos",          "watchsimulator",
   };
 
-  for (size_t i = 0; i < sizeof(embedded) / sizeof(embedded[0]); ++i) {
-    if (sdkRoot.find(embedded[i]) == 0 ||
-        sdkRoot.find(std::string("/") + embedded[i]) != std::string::npos) {
+  for (std::string const& i : embedded) {
+    if (sdkRoot.find(i) == 0 ||
+        sdkRoot.find(std::string("/") + i) != std::string::npos) {
       return true;
     }
   }
@@ -2252,7 +2278,7 @@ bool cmMakefile::IsDefinitionSet(const std::string& name) const
     }
   }
 #endif
-  return def != CM_NULLPTR;
+  return def != nullptr;
 }
 
 const char* cmMakefile::GetDefinition(const std::string& name) const
@@ -2423,7 +2449,7 @@ cmake::MessageType cmMakefile::ExpandVariablesInStringOld(
     std::string input = source;
 
     // Start with empty output.
-    source = "";
+    source.clear();
 
     // Look for one @VAR@ at a time.
     const char* in = input.c_str();
@@ -2561,7 +2587,7 @@ cmake::MessageType cmMakefile::ExpandVariablesInStringNew(
           openstack.pop_back();
           result.append(last, in - last);
           std::string const& lookup = result.substr(var.loc);
-          const char* value = CM_NULLPTR;
+          const char* value = nullptr;
           std::string varresult;
           std::string svalue;
           static const std::string lineVar = "CMAKE_CURRENT_LIST_LINE";
@@ -2617,7 +2643,7 @@ cmake::MessageType cmMakefile::ExpandVariablesInStringNew(
         if (!atOnly) {
           t_lookup lookup;
           const char* next = in + 1;
-          const char* start = CM_NULLPTR;
+          const char* start = nullptr;
           char nextc = *next;
           if (nextc == '{') {
             // Looking for a variable.
@@ -2817,40 +2843,6 @@ std::string cmMakefile::GetConfigurations(std::vector<std::string>& configs,
   return buildType;
 }
 
-#if defined(CMAKE_BUILD_WITH_CMAKE)
-/**
- * Find a source group whose regular expression matches the filename
- * part of the given source name.  Search backward through the list of
- * source groups, and take the first matching group found.  This way
- * non-inherited SOURCE_GROUP commands will have precedence over
- * inherited ones.
- */
-cmSourceGroup* cmMakefile::FindSourceGroup(
-  const char* source, std::vector<cmSourceGroup>& groups) const
-{
-  // First search for a group that lists the file explicitly.
-  for (std::vector<cmSourceGroup>::reverse_iterator sg = groups.rbegin();
-       sg != groups.rend(); ++sg) {
-    cmSourceGroup* result = sg->MatchChildrenFiles(source);
-    if (result) {
-      return result;
-    }
-  }
-
-  // Now search for a group whose regex matches the file.
-  for (std::vector<cmSourceGroup>::reverse_iterator sg = groups.rbegin();
-       sg != groups.rend(); ++sg) {
-    cmSourceGroup* result = sg->MatchChildrenRegex(source);
-    if (result) {
-      return result;
-    }
-  }
-
-  // Shouldn't get here, but just in case, return the default group.
-  return &groups.front();
-}
-#endif
-
 bool cmMakefile::IsFunctionBlocked(const cmListFileFunction& lff,
                                    cmExecutionStatus& status)
 {
@@ -2883,7 +2875,7 @@ void cmMakefile::PopFunctionBlockerBarrier(bool reportError)
   FunctionBlockersType::size_type barrier =
     this->FunctionBlockerBarriers.back();
   while (this->FunctionBlockers.size() > barrier) {
-    CM_AUTO_PTR<cmFunctionBlocker> fb(this->FunctionBlockers.back());
+    std::unique_ptr<cmFunctionBlocker> fb(this->FunctionBlockers.back());
     this->FunctionBlockers.pop_back();
     if (reportError) {
       // Report the context in which the unclosed block was opened.
@@ -2948,23 +2940,22 @@ bool cmMakefile::ExpandArguments(std::vector<cmListFileArgument> const& inArgs,
   if (!filename) {
     filename = efp.c_str();
   }
-  std::vector<cmListFileArgument>::const_iterator i;
   std::string value;
   outArgs.reserve(inArgs.size());
-  for (i = inArgs.begin(); i != inArgs.end(); ++i) {
+  for (cmListFileArgument const& i : inArgs) {
     // No expansion in a bracket argument.
-    if (i->Delim == cmListFileArgument::Bracket) {
-      outArgs.push_back(i->Value);
+    if (i.Delim == cmListFileArgument::Bracket) {
+      outArgs.push_back(i.Value);
       continue;
     }
     // Expand the variables in the argument.
-    value = i->Value;
-    this->ExpandVariablesInString(value, false, false, false, filename,
-                                  i->Line, false, false);
+    value = i.Value;
+    this->ExpandVariablesInString(value, false, false, false, filename, i.Line,
+                                  false, false);
 
     // If the argument is quoted, it should be one argument.
     // Otherwise, it may be a list of arguments.
-    if (i->Delim == cmListFileArgument::Quoted) {
+    if (i.Delim == cmListFileArgument::Quoted) {
       outArgs.push_back(value);
     } else {
       cmSystemTools::ExpandListArgument(value, outArgs);
@@ -2981,29 +2972,28 @@ bool cmMakefile::ExpandArguments(
   if (!filename) {
     filename = efp.c_str();
   }
-  std::vector<cmListFileArgument>::const_iterator i;
   std::string value;
   outArgs.reserve(inArgs.size());
-  for (i = inArgs.begin(); i != inArgs.end(); ++i) {
+  for (cmListFileArgument const& i : inArgs) {
     // No expansion in a bracket argument.
-    if (i->Delim == cmListFileArgument::Bracket) {
-      outArgs.push_back(cmExpandedCommandArgument(i->Value, true));
+    if (i.Delim == cmListFileArgument::Bracket) {
+      outArgs.push_back(cmExpandedCommandArgument(i.Value, true));
       continue;
     }
     // Expand the variables in the argument.
-    value = i->Value;
-    this->ExpandVariablesInString(value, false, false, false, filename,
-                                  i->Line, false, false);
+    value = i.Value;
+    this->ExpandVariablesInString(value, false, false, false, filename, i.Line,
+                                  false, false);
 
     // If the argument is quoted, it should be one argument.
     // Otherwise, it may be a list of arguments.
-    if (i->Delim == cmListFileArgument::Quoted) {
+    if (i.Delim == cmListFileArgument::Quoted) {
       outArgs.push_back(cmExpandedCommandArgument(value, true));
     } else {
       std::vector<std::string> stringArgs;
       cmSystemTools::ExpandListArgument(value, stringArgs);
-      for (size_t j = 0; j < stringArgs.size(); ++j) {
-        outArgs.push_back(cmExpandedCommandArgument(stringArgs[j], false));
+      for (std::string const& stringArg : stringArgs) {
+        outArgs.push_back(cmExpandedCommandArgument(stringArg, false));
       }
     }
   }
@@ -3020,7 +3010,7 @@ void cmMakefile::AddFunctionBlocker(cmFunctionBlocker* fb)
   this->FunctionBlockers.push_back(fb);
 }
 
-CM_AUTO_PTR<cmFunctionBlocker> cmMakefile::RemoveFunctionBlocker(
+std::unique_ptr<cmFunctionBlocker> cmMakefile::RemoveFunctionBlocker(
   cmFunctionBlocker* fb, const cmListFileFunction& lff)
 {
   // Find the function blocker stack barrier for the current scope.
@@ -3053,11 +3043,11 @@ CM_AUTO_PTR<cmFunctionBlocker> cmMakefile::RemoveFunctionBlocker(
       }
       cmFunctionBlocker* b = *pos;
       this->FunctionBlockers.erase(pos);
-      return CM_AUTO_PTR<cmFunctionBlocker>(b);
+      return std::unique_ptr<cmFunctionBlocker>(b);
     }
   }
 
-  return CM_AUTO_PTR<cmFunctionBlocker>();
+  return std::unique_ptr<cmFunctionBlocker>();
 }
 
 const char* cmMakefile::GetHomeDirectory() const
@@ -3093,15 +3083,12 @@ void cmMakefile::SetArgcArgv(const std::vector<std::string>& args)
 cmSourceFile* cmMakefile::GetSource(const std::string& sourceName) const
 {
   cmSourceFileLocation sfl(this, sourceName);
-  for (std::vector<cmSourceFile*>::const_iterator sfi =
-         this->SourceFiles.begin();
-       sfi != this->SourceFiles.end(); ++sfi) {
-    cmSourceFile* sf = *sfi;
+  for (cmSourceFile* sf : this->SourceFiles) {
     if (sf->Matches(sfl)) {
       return sf;
     }
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmSourceFile* cmMakefile::CreateSource(const std::string& sourceName,
@@ -3147,12 +3134,11 @@ void cmMakefile::EnableLanguage(std::vector<std::string> const& lang,
   std::vector<std::string> langs;
   std::vector<std::string> langsRC;
   langs.reserve(lang.size());
-  for (std::vector<std::string>::const_iterator i = lang.begin();
-       i != lang.end(); ++i) {
-    if (*i == "RC") {
-      langsRC.push_back(*i);
+  for (std::string const& i : lang) {
+    if (i == "RC") {
+      langsRC.push_back(i);
     } else {
-      langs.push_back(*i);
+      langs.push_back(i);
     }
   }
   if (!langs.empty()) {
@@ -3200,8 +3186,8 @@ int cmMakefile::TryCompile(const std::string& srcdir,
   // do a configure
   cm.SetHomeDirectory(srcdir);
   cm.SetHomeOutputDirectory(bindir);
-  cm.SetGeneratorPlatform(this->GetCMakeInstance()->GetGeneratorPlatform());
-  cm.SetGeneratorToolset(this->GetCMakeInstance()->GetGeneratorToolset());
+  cm.SetGeneratorPlatform(this->GetSafeDefinition("CMAKE_GENERATOR_PLATFORM"));
+  cm.SetGeneratorToolset(this->GetSafeDefinition("CMAKE_GENERATOR_TOOLSET"));
   cm.LoadCache();
   if (!gg->IsMultiConfig()) {
     if (const char* config =
@@ -3302,7 +3288,7 @@ cmVariableWatch* cmMakefile::GetVariableWatch() const
       this->GetCMakeInstance()->GetVariableWatch()) {
     return this->GetCMakeInstance()->GetVariableWatch();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 #endif
 
@@ -3346,9 +3332,7 @@ std::string cmMakefile::GetModulesFile(const char* filename) const
     cmSystemTools::ExpandListArgument(cmakeModulePath, modulePath);
 
     // Look through the possible module directories.
-    for (std::vector<std::string>::iterator i = modulePath.begin();
-         i != modulePath.end(); ++i) {
-      std::string itempl = *i;
+    for (std::string itempl : modulePath) {
       cmSystemTools::ConvertToUnixSlashes(itempl);
       itempl += "/";
       itempl += filename;
@@ -3365,7 +3349,7 @@ std::string cmMakefile::GetModulesFile(const char* filename) const
   moduleInCMakeRoot += filename;
   cmSystemTools::ConvertToUnixSlashes(moduleInCMakeRoot);
   if (!cmSystemTools::FileExists(moduleInCMakeRoot.c_str())) {
-    moduleInCMakeRoot = "";
+    moduleInCMakeRoot.clear();
   }
 
   // Normally, prefer the files found in CMAKE_MODULE_PATH. Only when the file
@@ -3432,18 +3416,22 @@ void cmMakefile::ConfigureString(const std::string& input, std::string& output,
 
     // Replace #cmakedefine instances.
     if (this->cmDefineRegex.find(line)) {
-      const char* def = this->GetDefinition(this->cmDefineRegex.match(1));
+      const char* def = this->GetDefinition(this->cmDefineRegex.match(2));
       if (!cmSystemTools::IsOff(def)) {
-        cmSystemTools::ReplaceString(line, "#cmakedefine", "#define");
+        const std::string indentation = this->cmDefineRegex.match(1);
+        cmSystemTools::ReplaceString(line, "#" + indentation + "cmakedefine",
+                                     "#" + indentation + "define");
         output += line;
       } else {
         output += "/* #undef ";
-        output += this->cmDefineRegex.match(1);
+        output += this->cmDefineRegex.match(2);
         output += " */";
       }
     } else if (this->cmDefine01Regex.find(line)) {
-      const char* def = this->GetDefinition(this->cmDefine01Regex.match(1));
-      cmSystemTools::ReplaceString(line, "#cmakedefine01", "#define");
+      const std::string indentation = this->cmDefine01Regex.match(1);
+      const char* def = this->GetDefinition(this->cmDefine01Regex.match(2));
+      cmSystemTools::ReplaceString(line, "#" + indentation + "cmakedefine01",
+                                   "#" + indentation + "define");
       output += line;
       if (!cmSystemTools::IsOff(def)) {
         output += " 1";
@@ -3463,7 +3451,7 @@ void cmMakefile::ConfigureString(const std::string& input, std::string& output,
   }
 
   // Perform variable replacements.
-  this->ExpandVariablesInString(output, escapeQuotes, true, atOnly, CM_NULLPTR,
+  this->ExpandVariablesInString(output, escapeQuotes, true, atOnly, nullptr,
                                 -1, true, true);
 }
 
@@ -3545,7 +3533,7 @@ int cmMakefile::ConfigureFile(const char* infile, const char* outfile,
     std::string inLine;
     std::string outLine;
     while (cmSystemTools::GetLineFromStream(fin, inLine)) {
-      outLine = "";
+      outLine.clear();
       this->ConfigureString(inLine, outLine, atOnly, escapeQuotes);
       fout << outLine << newLineCharacters;
     }
@@ -3603,7 +3591,7 @@ cmTarget* cmMakefile::FindLocalNonAliasTarget(const std::string& name) const
   if (i != this->Targets.end()) {
     return &i->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmTest* cmMakefile::CreateTest(const std::string& testName)
@@ -3625,7 +3613,7 @@ cmTest* cmMakefile::GetTest(const std::string& testName) const
   if (mi != this->Tests.end()) {
     return mi->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmMakefile::AddCMakeDependFilesFromUser()
@@ -3634,14 +3622,13 @@ void cmMakefile::AddCMakeDependFilesFromUser()
   if (const char* deps_str = this->GetProperty("CMAKE_CONFIGURE_DEPENDS")) {
     cmSystemTools::ExpandListArgument(deps_str, deps);
   }
-  for (std::vector<std::string>::iterator i = deps.begin(); i != deps.end();
-       ++i) {
-    if (cmSystemTools::FileIsFullPath(i->c_str())) {
-      this->AddCMakeDependFile(*i);
+  for (std::string const& dep : deps) {
+    if (cmSystemTools::FileIsFullPath(dep.c_str())) {
+      this->AddCMakeDependFile(dep);
     } else {
       std::string f = this->GetCurrentSourceDirectory();
       f += "/";
-      f += *i;
+      f += dep;
       this->AddCMakeDependFile(f);
     }
   }
@@ -3717,7 +3704,7 @@ cmTarget* cmMakefile::AddImportedTarget(const std::string& name,
                                         bool global)
 {
   // Create the target.
-  CM_AUTO_PTR<cmTarget> target(
+  std::unique_ptr<cmTarget> target(
     new cmTarget(name, type, global ? cmTarget::VisibilityImportedGlobally
                                     : cmTarget::VisibilityImported,
                  this));
@@ -3896,16 +3883,6 @@ bool cmMakefile::EnforceUniqueDir(const std::string& srcPath,
   return false;
 }
 
-void cmMakefile::AddQtUiFileWithOptions(cmSourceFile* sf)
-{
-  this->QtUiFilesWithOptions.push_back(sf);
-}
-
-std::vector<cmSourceFile*> cmMakefile::GetQtUiFilesWithOptions() const
-{
-  return this->QtUiFilesWithOptions;
-}
-
 static std::string const matchVariables[] = {
   "CMAKE_MATCH_0", "CMAKE_MATCH_1", "CMAKE_MATCH_2", "CMAKE_MATCH_3",
   "CMAKE_MATCH_4", "CMAKE_MATCH_5", "CMAKE_MATCH_6", "CMAKE_MATCH_7",
@@ -4093,10 +4070,10 @@ bool cmMakefile::IgnoreErrorsCMP0061() const
 }
 
 #define FEATURE_STRING(F) , #F
-static const char* const C_FEATURES[] = { CM_NULLPTR FOR_EACH_C_FEATURE(
+static const char* const C_FEATURES[] = { nullptr FOR_EACH_C_FEATURE(
   FEATURE_STRING) };
 
-static const char* const CXX_FEATURES[] = { CM_NULLPTR FOR_EACH_CXX_FEATURE(
+static const char* const CXX_FEATURES[] = { nullptr FOR_EACH_CXX_FEATURE(
   FEATURE_STRING) };
 #undef FEATURE_STRING
 
@@ -4204,7 +4181,7 @@ const char* cmMakefile::CompileFeaturesAvailable(const std::string& lang,
       this->GetCMakeInstance()->IssueMessage(cmake::FATAL_ERROR, e.str(),
                                              this->Backtrace);
     }
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   const char* featuresKnown =
@@ -4227,7 +4204,7 @@ const char* cmMakefile::CompileFeaturesAvailable(const std::string& lang,
       this->GetCMakeInstance()->IssueMessage(cmake::FATAL_ERROR, e.str(),
                                              this->Backtrace);
     }
-    return CM_NULLPTR;
+    return nullptr;
   }
   return featuresKnown;
 }
@@ -4375,6 +4352,18 @@ bool cmMakefile::HaveCxxStandardAvailable(cmTarget const* target,
                    cmStrCmp(existingCxxStandard))
     : cmArrayEnd(CXX_STANDARDS);
 
+  if (needCxx17 &&
+      existingCxxIt < std::find_if(cmArrayBegin(CXX_STANDARDS),
+                                   cmArrayEnd(CXX_STANDARDS),
+                                   cmStrCmp("17"))) {
+    return false;
+  }
+  if (needCxx14 &&
+      existingCxxIt < std::find_if(cmArrayBegin(CXX_STANDARDS),
+                                   cmArrayEnd(CXX_STANDARDS),
+                                   cmStrCmp("14"))) {
+    return false;
+  }
   if (needCxx11 &&
       existingCxxIt < std::find_if(cmArrayBegin(CXX_STANDARDS),
                                    cmArrayEnd(CXX_STANDARDS),
diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index e65ba468f..0273f5bae 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -3,15 +3,17 @@
 #ifndef cmMakefile_h
 #define cmMakefile_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmsys/RegularExpression.hxx"
 #include <deque>
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <set>
 #include <stack>
 #include <stddef.h>
 #include <string>
+#include <unordered_map>
 #include <vector>
 
 #include "cmAlgorithms.h"
@@ -21,8 +23,6 @@
 #include "cmStateSnapshot.h"
 #include "cmStateTypes.h"
 #include "cmTarget.h"
-#include "cm_auto_ptr.hxx"
-#include "cm_unordered_map.hxx"
 #include "cmake.h"
 
 #if defined(CMAKE_BUILD_WITH_CMAKE)
@@ -92,7 +92,7 @@ public:
    * Remove the function blocker whose scope ends with the given command.
    * This returns ownership of the function blocker object.
    */
-  CM_AUTO_PTR<cmFunctionBlocker> RemoveFunctionBlocker(
+  std::unique_ptr<cmFunctionBlocker> RemoveFunctionBlocker(
     cmFunctionBlocker* fb, const cmListFileFunction& lff);
 
   /**
@@ -187,24 +187,26 @@ public:
    * Add a utility to the build.  A utiltity target is a command that
    * is run every time the target is built.
    */
-  cmTarget* AddUtilityCommand(
-    const std::string& utilityName, bool excludeFromAll,
-    const std::vector<std::string>& depends, const char* workingDirectory,
-    const char* command, const char* arg1 = CM_NULLPTR,
-    const char* arg2 = CM_NULLPTR, const char* arg3 = CM_NULLPTR,
-    const char* arg4 = CM_NULLPTR);
+  cmTarget* AddUtilityCommand(const std::string& utilityName,
+                              bool excludeFromAll,
+                              const std::vector<std::string>& depends,
+                              const char* workingDirectory,
+                              const char* command, const char* arg1 = nullptr,
+                              const char* arg2 = nullptr,
+                              const char* arg3 = nullptr,
+                              const char* arg4 = nullptr);
   cmTarget* AddUtilityCommand(
     const std::string& utilityName, bool excludeFromAll,
     const char* workingDirectory, const std::vector<std::string>& depends,
     const cmCustomCommandLines& commandLines, bool escapeOldStyle = true,
-    const char* comment = CM_NULLPTR, bool uses_terminal = false,
+    const char* comment = nullptr, bool uses_terminal = false,
     bool command_expand_lists = false);
   cmTarget* AddUtilityCommand(
     const std::string& utilityName, bool excludeFromAll,
     const char* workingDirectory, const std::vector<std::string>& byproducts,
     const std::vector<std::string>& depends,
     const cmCustomCommandLines& commandLines, bool escapeOldStyle = true,
-    const char* comment = CM_NULLPTR, bool uses_terminal = false,
+    const char* comment = nullptr, bool uses_terminal = false,
     bool command_expand_lists = false);
 
   /**
@@ -268,21 +270,6 @@ public:
                        bool excludeFromAll = false);
   void AddAlias(const std::string& libname, const std::string& tgt);
 
-#if defined(CMAKE_BUILD_WITH_CMAKE)
-  /**
-   * Add a root source group for consideration when adding a new source.
-   */
-  void AddSourceGroup(const std::string& name, const char* regex = CM_NULLPTR);
-
-  /**
-   * Add a source group for consideration when adding a new source.
-   * name is tokenized.
-   */
-  void AddSourceGroup(const std::vector<std::string>& name,
-                      const char* regex = CM_NULLPTR);
-
-#endif
-
   //@{
   /**
      * Set, Push, Pop policy values for CMake.
@@ -474,6 +461,36 @@ public:
    * Get the source group
    */
   cmSourceGroup* GetSourceGroup(const std::vector<std::string>& name) const;
+
+  /**
+   * Add a root source group for consideration when adding a new source.
+   */
+  void AddSourceGroup(const std::string& name, const char* regex = nullptr);
+
+  /**
+   * Add a source group for consideration when adding a new source.
+   * name is tokenized.
+   */
+  void AddSourceGroup(const std::vector<std::string>& name,
+                      const char* regex = nullptr);
+
+  /**
+   * Get and existing or create a new source group.
+   */
+  cmSourceGroup* GetOrCreateSourceGroup(
+    const std::vector<std::string>& folders);
+
+  /**
+   * Get and existing or create a new source group.
+   * The name will be tokenized.
+   */
+  cmSourceGroup* GetOrCreateSourceGroup(const std::string& name);
+
+  /**
+   * find what source group this source is in
+   */
+  cmSourceGroup* FindSourceGroup(const char* source,
+                                 std::vector<cmSourceGroup>& groups) const;
 #endif
 
   /**
@@ -521,7 +538,7 @@ public:
   const char* ExpandVariablesInString(std::string& source) const;
   const char* ExpandVariablesInString(std::string& source, bool escapeQuotes,
                                       bool noEscapes, bool atOnly = false,
-                                      const char* filename = CM_NULLPTR,
+                                      const char* filename = nullptr,
                                       long line = -1, bool removeEmpty = false,
                                       bool replaceAt = false) const;
 
@@ -550,14 +567,6 @@ public:
                     bool atOnly, bool escapeQuotes,
                     cmNewLineStyle = cmNewLineStyle());
 
-#if defined(CMAKE_BUILD_WITH_CMAKE)
-  /**
-   * find what source group this source is in
-   */
-  cmSourceGroup* FindSourceGroup(const char* source,
-                                 std::vector<cmSourceGroup>& groups) const;
-#endif
-
   /**
    * Print a command's invocation
    */
@@ -594,11 +603,11 @@ public:
    */
   bool ExpandArguments(std::vector<cmListFileArgument> const& inArgs,
                        std::vector<std::string>& outArgs,
-                       const char* filename = CM_NULLPTR) const;
+                       const char* filename = nullptr) const;
 
   bool ExpandArguments(std::vector<cmListFileArgument> const& inArgs,
                        std::vector<cmExpandedCommandArgument>& outArgs,
-                       const char* filename = CM_NULLPTR) const;
+                       const char* filename = nullptr) const;
 
   /**
    * Get the instance
@@ -614,7 +623,6 @@ public:
   {
     return this->SourceFiles;
   }
-  std::vector<cmSourceFile*>& GetSourceFiles() { return this->SourceFiles; }
 
   /**
    * Is there a source file that has the provided source file as an output?
@@ -736,9 +744,6 @@ public:
   cmStringRange GetCompileDefinitionsEntries() const;
   cmBacktraceRange GetCompileDefinitionsBacktraces() const;
 
-  void AddQtUiFileWithOptions(cmSourceFile* sf);
-  std::vector<cmSourceFile*> GetQtUiFilesWithOptions() const;
-
   std::set<std::string> const& GetSystemIncludeDirectories() const
   {
     return this->SystemIncludeDirectories;
@@ -747,7 +752,7 @@ public:
   bool PolicyOptionalWarningEnabled(std::string const& var);
 
   bool AddRequiredTargetFeature(cmTarget* target, const std::string& feature,
-                                std::string* error = CM_NULLPTR) const;
+                                std::string* error = nullptr) const;
 
   bool CompileFeatureKnown(cmTarget const* target, const std::string& feature,
                            std::string& lang, std::string* error) const;
@@ -776,10 +781,11 @@ public:
 
   void EnforceDirectoryLevelRules() const;
 
-  void AddEvaluationFile(const std::string& inputFile,
-                         CM_AUTO_PTR<cmCompiledGeneratorExpression> outputName,
-                         CM_AUTO_PTR<cmCompiledGeneratorExpression> condition,
-                         bool inputIsContent);
+  void AddEvaluationFile(
+    const std::string& inputFile,
+    std::unique_ptr<cmCompiledGeneratorExpression> outputName,
+    std::unique_ptr<cmCompiledGeneratorExpression> condition,
+    bool inputIsContent);
   std::vector<cmGeneratorExpressionEvaluationFile*> GetEvaluationFiles() const;
 
   std::vector<cmExportBuildFileGenerator*> GetExportBuildFileGenerators()
@@ -871,7 +877,7 @@ private:
   friend class cmParseFileScope;
 
   std::vector<cmTarget*> ImportedTargetsOwned;
-  typedef CM_UNORDERED_MAP<std::string, cmTarget*> TargetMap;
+  typedef std::unordered_map<std::string, cmTarget*> TargetMap;
   TargetMap ImportedTargets;
 
   // Internal policy stack management.
@@ -909,7 +915,7 @@ private:
   cmSourceFile* LinearGetSourceFileWithOutput(const std::string& cname) const;
 
   // A map for fast output to input look up.
-  typedef CM_UNORDERED_MAP<std::string, cmSourceFile*> OutputToSourceMap;
+  typedef std::unordered_map<std::string, cmSourceFile*> OutputToSourceMap;
   OutputToSourceMap OutputToSource;
 
   void UpdateOutputToSourceMap(std::vector<std::string> const& outputs,
@@ -917,14 +923,12 @@ private:
   void UpdateOutputToSourceMap(std::string const& output,
                                cmSourceFile* source);
 
-  std::vector<cmSourceFile*> QtUiFilesWithOptions;
-
   bool AddRequiredTargetCFeature(cmTarget* target, const std::string& feature,
-                                 std::string* error = CM_NULLPTR) const;
+                                 std::string* error = nullptr) const;
 
   bool AddRequiredTargetCxxFeature(cmTarget* target,
                                    const std::string& feature,
-                                   std::string* error = CM_NULLPTR) const;
+                                   std::string* error = nullptr) const;
 
   void CheckNeededCLanguage(const std::string& feature, bool& needC90,
                             bool& needC99, bool& needC11) const;
diff --git a/Source/cmMakefileExecutableTargetGenerator.cxx b/Source/cmMakefileExecutableTargetGenerator.cxx
index 359b9fdbb..801f72ab6 100644
--- a/Source/cmMakefileExecutableTargetGenerator.cxx
+++ b/Source/cmMakefileExecutableTargetGenerator.cxx
@@ -3,6 +3,7 @@
 #include "cmMakefileExecutableTargetGenerator.h"
 
 #include <algorithm>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <string>
 #include <vector>
@@ -23,7 +24,6 @@
 #include "cmStateSnapshot.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmMakefileExecutableTargetGenerator::cmMakefileExecutableTargetGenerator(
@@ -193,7 +193,7 @@ void cmMakefileExecutableTargetGenerator::WriteDeviceExecutableRule(
     // Set path conversion for link script shells.
     this->LocalGenerator->SetLinkScriptShell(useLinkScript);
 
-    CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+    std::unique_ptr<cmLinkLineComputer> linkLineComputer(
       new cmLinkLineDeviceComputer(
         this->LocalGenerator,
         this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -251,16 +251,15 @@ void cmMakefileExecutableTargetGenerator::WriteDeviceExecutableRule(
       launcher += " ";
     }
 
-    CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+    std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
       this->LocalGenerator->CreateRulePlaceholderExpander());
 
     // Expand placeholders in the commands.
     rulePlaceholderExpander->SetTargetImpLib(targetOutputReal);
-    for (std::vector<std::string>::iterator i = real_link_commands.begin();
-         i != real_link_commands.end(); ++i) {
-      *i = launcher + *i;
-      rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator, *i,
-                                                   vars);
+    for (std::string& real_link_command : real_link_commands) {
+      real_link_command = launcher + real_link_command;
+      rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator,
+                                                   real_link_command, vars);
     }
 
     // Restore path conversion to normal shells.
@@ -284,7 +283,7 @@ void cmMakefileExecutableTargetGenerator::WriteDeviceExecutableRule(
   commands1.clear();
 
   // Write the build rule.
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       targetOutputReal, depends, commands,
                                       false);
 
@@ -449,7 +448,7 @@ void cmMakefileExecutableTargetGenerator::WriteExecutableRule(bool relink)
     linkFlags, this->GeneratorTarget->GetProperty(linkFlagsConfig));
 
   {
-    CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+    std::unique_ptr<cmLinkLineComputer> linkLineComputer(
       this->CreateLinkLineComputer(
         this->LocalGenerator,
         this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -539,7 +538,7 @@ void cmMakefileExecutableTargetGenerator::WriteExecutableRule(bool relink)
     // Set path conversion for link script shells.
     this->LocalGenerator->SetLinkScriptShell(useLinkScript);
 
-    CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+    std::unique_ptr<cmLinkLineComputer> linkLineComputer(
       this->CreateLinkLineComputer(
         this->LocalGenerator,
         this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -619,7 +618,7 @@ void cmMakefileExecutableTargetGenerator::WriteExecutableRule(bool relink)
     if (this->GeneratorTarget->GetPropertyAsBool("LINK_WHAT_YOU_USE")) {
       std::string cmakeCommand = this->LocalGenerator->ConvertToOutputFormat(
         cmSystemTools::GetCMakeCommand(), cmLocalGenerator::SHELL);
-      cmakeCommand += " -E __run_iwyu --lwyu=";
+      cmakeCommand += " -E __run_co_compile --lwyu=";
       cmakeCommand += targetOutPathReal;
       real_link_commands.push_back(cmakeCommand);
     }
@@ -633,16 +632,15 @@ void cmMakefileExecutableTargetGenerator::WriteExecutableRule(bool relink)
       launcher += " ";
     }
 
-    CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+    std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
       this->LocalGenerator->CreateRulePlaceholderExpander());
 
     // Expand placeholders in the commands.
     rulePlaceholderExpander->SetTargetImpLib(targetOutPathImport);
-    for (std::vector<std::string>::iterator i = real_link_commands.begin();
-         i != real_link_commands.end(); ++i) {
-      *i = launcher + *i;
-      rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator, *i,
-                                                   vars);
+    for (std::string& real_link_command : real_link_commands) {
+      real_link_command = launcher + real_link_command;
+      rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator,
+                                                   real_link_command, vars);
     }
 
     // Restore path conversion to normal shells.
@@ -687,7 +685,7 @@ void cmMakefileExecutableTargetGenerator::WriteExecutableRule(bool relink)
   }
 
   // Write the build rule.
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       targetFullPathReal, depends, commands,
                                       false);
 
@@ -698,7 +696,7 @@ void cmMakefileExecutableTargetGenerator::WriteExecutableRule(bool relink)
     depends.clear();
     commands.clear();
     depends.push_back(targetFullPathReal);
-    this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+    this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                         targetFullPath, depends, commands,
                                         false);
   }
diff --git a/Source/cmMakefileExecutableTargetGenerator.h b/Source/cmMakefileExecutableTargetGenerator.h
index 01aa6270c..b9bbe8667 100644
--- a/Source/cmMakefileExecutableTargetGenerator.h
+++ b/Source/cmMakefileExecutableTargetGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmMakefileExecutableTargetGenerator_h
 #define cmMakefileExecutableTargetGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
@@ -15,11 +15,11 @@ class cmMakefileExecutableTargetGenerator : public cmMakefileTargetGenerator
 {
 public:
   cmMakefileExecutableTargetGenerator(cmGeneratorTarget* target);
-  ~cmMakefileExecutableTargetGenerator() CM_OVERRIDE;
+  ~cmMakefileExecutableTargetGenerator() override;
 
   /* the main entry point for this class. Writes the Makefiles associated
      with this target */
-  void WriteRuleFiles() CM_OVERRIDE;
+  void WriteRuleFiles() override;
 
 protected:
   virtual void WriteExecutableRule(bool relink);
diff --git a/Source/cmMakefileLibraryTargetGenerator.cxx b/Source/cmMakefileLibraryTargetGenerator.cxx
index 3d1594bdb..80c62d10f 100644
--- a/Source/cmMakefileLibraryTargetGenerator.cxx
+++ b/Source/cmMakefileLibraryTargetGenerator.cxx
@@ -3,6 +3,7 @@
 #include "cmMakefileLibraryTargetGenerator.h"
 
 #include <algorithm>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <vector>
 
@@ -22,7 +23,6 @@
 #include "cmStateSnapshot.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmMakefileLibraryTargetGenerator::cmMakefileLibraryTargetGenerator(
@@ -117,7 +117,7 @@ void cmMakefileLibraryTargetGenerator::WriteObjectLibraryRules()
   this->AppendObjectDepends(depends);
 
   // Write the rule.
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       this->GeneratorTarget->GetName(),
                                       depends, commands, true);
 
@@ -199,7 +199,7 @@ void cmMakefileLibraryTargetGenerator::WriteSharedLibraryRules(bool relink)
   this->LocalGenerator->AddConfigVariableFlags(
     extraFlags, "CMAKE_SHARED_LINKER_FLAGS", this->ConfigName);
 
-  CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+  std::unique_ptr<cmLinkLineComputer> linkLineComputer(
     this->CreateLinkLineComputer(
       this->LocalGenerator,
       this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -248,7 +248,7 @@ void cmMakefileLibraryTargetGenerator::WriteModuleLibraryRules(bool relink)
   this->LocalGenerator->AddConfigVariableFlags(
     extraFlags, "CMAKE_MODULE_LINKER_FLAGS", this->ConfigName);
 
-  CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+  std::unique_ptr<cmLinkLineComputer> linkLineComputer(
     this->CreateLinkLineComputer(
       this->LocalGenerator,
       this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -348,7 +348,7 @@ void cmMakefileLibraryTargetGenerator::WriteDeviceLibraryRules(
     std::string linkLibs;
     if (this->GeneratorTarget->GetType() != cmStateEnums::STATIC_LIBRARY) {
 
-      CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+      std::unique_ptr<cmLinkLineComputer> linkLineComputer(
         new cmLinkLineDeviceComputer(
           this->LocalGenerator,
           this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -410,7 +410,7 @@ void cmMakefileLibraryTargetGenerator::WriteDeviceLibraryRules(
       launcher += " ";
     }
 
-    CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+    std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
       this->LocalGenerator->CreateRulePlaceholderExpander());
 
     // Construct the main link rule and expand placeholders.
@@ -419,11 +419,10 @@ void cmMakefileLibraryTargetGenerator::WriteDeviceLibraryRules(
     cmSystemTools::ExpandListArgument(linkRule, real_link_commands);
 
     // Expand placeholders.
-    for (std::vector<std::string>::iterator i = real_link_commands.begin();
-         i != real_link_commands.end(); ++i) {
-      *i = launcher + *i;
-      rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator, *i,
-                                                   vars);
+    for (std::string& real_link_command : real_link_commands) {
+      real_link_command = launcher + real_link_command;
+      rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator,
+                                                   real_link_command, vars);
     }
     // Restore path conversion to normal shells.
     this->LocalGenerator->SetLinkScriptShell(false);
@@ -454,7 +453,7 @@ void cmMakefileLibraryTargetGenerator::WriteDeviceLibraryRules(
   std::vector<std::string> outputs(1, targetOutputReal);
 
   // Write the build rule.
-  this->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR, outputs, depends,
+  this->WriteMakeRule(*this->BuildFileStream, nullptr, outputs, depends,
                       commands, false);
 
   // Write the main driver rule to build everything in this target.
@@ -755,7 +754,7 @@ void cmMakefileLibraryTargetGenerator::WriteLibraryRules(
     std::string linkLibs;
     if (this->GeneratorTarget->GetType() != cmStateEnums::STATIC_LIBRARY) {
 
-      CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+      std::unique_ptr<cmLinkLineComputer> linkLineComputer(
         this->CreateLinkLineComputer(
           this->LocalGenerator,
           this->LocalGenerator->GetStateSnapshot().GetDirectory()));
@@ -874,7 +873,7 @@ void cmMakefileLibraryTargetGenerator::WriteLibraryRules(
       launcher += " ";
     }
 
-    CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+    std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
       this->LocalGenerator->CreateRulePlaceholderExpander());
     // Construct the main link rule and expand placeholders.
     rulePlaceholderExpander->SetTargetImpLib(targetOutPathImport);
@@ -897,10 +896,8 @@ void cmMakefileLibraryTargetGenerator::WriteLibraryRules(
       std::vector<std::string>::iterator osi = object_strings.begin();
       {
         vars.Objects = osi->c_str();
-        for (std::vector<std::string>::const_iterator i =
-               archiveCreateCommands.begin();
-             i != archiveCreateCommands.end(); ++i) {
-          std::string cmd = launcher + *i;
+        for (std::string const& acc : archiveCreateCommands) {
+          std::string cmd = launcher + acc;
           rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator,
                                                        cmd, vars);
           real_link_commands.push_back(cmd);
@@ -909,10 +906,8 @@ void cmMakefileLibraryTargetGenerator::WriteLibraryRules(
       // Append to the archive with the other object sets.
       for (++osi; osi != object_strings.end(); ++osi) {
         vars.Objects = osi->c_str();
-        for (std::vector<std::string>::const_iterator i =
-               archiveAppendCommands.begin();
-             i != archiveAppendCommands.end(); ++i) {
-          std::string cmd = launcher + *i;
+        for (std::string const& aac : archiveAppendCommands) {
+          std::string cmd = launcher + aac;
           rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator,
                                                        cmd, vars);
           real_link_commands.push_back(cmd);
@@ -920,10 +915,8 @@ void cmMakefileLibraryTargetGenerator::WriteLibraryRules(
       }
       // Finish the archive.
       vars.Objects = "";
-      for (std::vector<std::string>::const_iterator i =
-             archiveFinishCommands.begin();
-           i != archiveFinishCommands.end(); ++i) {
-        std::string cmd = launcher + *i;
+      for (std::string const& afc : archiveFinishCommands) {
+        std::string cmd = launcher + afc;
         rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator, cmd,
                                                      vars);
         // If there is no ranlib the command will be ":".  Skip it.
@@ -939,17 +932,16 @@ void cmMakefileLibraryTargetGenerator::WriteLibraryRules(
           (this->GeneratorTarget->GetType() == cmStateEnums::SHARED_LIBRARY)) {
         std::string cmakeCommand = this->LocalGenerator->ConvertToOutputFormat(
           cmSystemTools::GetCMakeCommand(), cmLocalGenerator::SHELL);
-        cmakeCommand += " -E __run_iwyu --lwyu=";
+        cmakeCommand += " -E __run_co_compile --lwyu=";
         cmakeCommand += targetOutPathReal;
         real_link_commands.push_back(cmakeCommand);
       }
 
       // Expand placeholders.
-      for (std::vector<std::string>::iterator i = real_link_commands.begin();
-           i != real_link_commands.end(); ++i) {
-        *i = launcher + *i;
-        rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator, *i,
-                                                     vars);
+      for (std::string& real_link_command : real_link_commands) {
+        real_link_command = launcher + real_link_command;
+        rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator,
+                                                     real_link_command, vars);
       }
     }
 
@@ -1008,7 +1000,7 @@ void cmMakefileLibraryTargetGenerator::WriteLibraryRules(
   }
 
   // Write the build rule.
-  this->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR, outputs, depends,
+  this->WriteMakeRule(*this->BuildFileStream, nullptr, outputs, depends,
                       commands, false);
 
   // Write the main driver rule to build everything in this target.
diff --git a/Source/cmMakefileLibraryTargetGenerator.h b/Source/cmMakefileLibraryTargetGenerator.h
index da1d8b65c..02fa029cd 100644
--- a/Source/cmMakefileLibraryTargetGenerator.h
+++ b/Source/cmMakefileLibraryTargetGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmMakefileLibraryTargetGenerator_h
 #define cmMakefileLibraryTargetGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmMakefileTargetGenerator.h"
 
@@ -15,11 +15,11 @@ class cmMakefileLibraryTargetGenerator : public cmMakefileTargetGenerator
 {
 public:
   cmMakefileLibraryTargetGenerator(cmGeneratorTarget* target);
-  ~cmMakefileLibraryTargetGenerator() CM_OVERRIDE;
+  ~cmMakefileLibraryTargetGenerator() override;
 
   /* the main entry point for this class. Writes the Makefiles associated
      with this target */
-  void WriteRuleFiles() CM_OVERRIDE;
+  void WriteRuleFiles() override;
 
 protected:
   void WriteObjectLibraryRules();
diff --git a/Source/cmMakefileTargetGenerator.cxx b/Source/cmMakefileTargetGenerator.cxx
index a4511b63b..7db010c24 100644
--- a/Source/cmMakefileTargetGenerator.cxx
+++ b/Source/cmMakefileTargetGenerator.cxx
@@ -2,6 +2,7 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmMakefileTargetGenerator.h"
 
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <utility>
@@ -27,17 +28,16 @@
 #include "cmStateSnapshot.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmMakefileTargetGenerator::cmMakefileTargetGenerator(cmGeneratorTarget* target)
   : cmCommonTargetGenerator(target)
-  , OSXBundleGenerator(CM_NULLPTR)
-  , MacOSXContentGenerator(CM_NULLPTR)
+  , OSXBundleGenerator(nullptr)
+  , MacOSXContentGenerator(nullptr)
 {
-  this->BuildFileStream = CM_NULLPTR;
-  this->InfoFileStream = CM_NULLPTR;
-  this->FlagFileStream = CM_NULLPTR;
+  this->BuildFileStream = nullptr;
+  this->InfoFileStream = nullptr;
+  this->FlagFileStream = nullptr;
   this->CustomCommandDriver = OnBuild;
   this->LocalGenerator =
     static_cast<cmLocalUnixMakefileGenerator3*>(target->GetLocalGenerator());
@@ -60,7 +60,7 @@ cmMakefileTargetGenerator::~cmMakefileTargetGenerator()
 cmMakefileTargetGenerator* cmMakefileTargetGenerator::New(
   cmGeneratorTarget* tgt)
 {
-  cmMakefileTargetGenerator* result = CM_NULLPTR;
+  cmMakefileTargetGenerator* result = nullptr;
 
   switch (tgt->GetType()) {
     case cmStateEnums::EXECUTABLE:
@@ -134,12 +134,12 @@ void cmMakefileTargetGenerator::WriteTargetBuildRules()
   if (const char* additional_clean_files =
         this->Makefile->GetProperty("ADDITIONAL_MAKE_CLEAN_FILES")) {
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge =
+    std::unique_ptr<cmCompiledGeneratorExpression> cge =
       ge.Parse(additional_clean_files);
 
     cmSystemTools::ExpandListArgument(
       cge->Evaluate(this->LocalGenerator, config, false, this->GeneratorTarget,
-                    CM_NULLPTR, CM_NULLPTR),
+                    nullptr, nullptr),
       this->CleanFiles);
   }
 
@@ -153,18 +153,16 @@ void cmMakefileTargetGenerator::WriteTargetBuildRules()
   this->GeneratorTarget->GetCustomCommands(customCommands, config);
   std::string currentBinDir =
     this->LocalGenerator->GetCurrentBinaryDirectory();
-  for (std::vector<cmSourceFile const*>::const_iterator si =
-         customCommands.begin();
-       si != customCommands.end(); ++si) {
-    cmCustomCommandGenerator ccg(*(*si)->GetCustomCommand(), this->ConfigName,
+  for (cmSourceFile const* sf : customCommands) {
+    cmCustomCommandGenerator ccg(*sf->GetCustomCommand(), this->ConfigName,
                                  this->LocalGenerator);
     this->GenerateCustomRuleFile(ccg);
     if (clean) {
       const std::vector<std::string>& outputs = ccg.GetOutputs();
-      for (std::vector<std::string>::const_iterator o = outputs.begin();
-           o != outputs.end(); ++o) {
+      for (std::string const& output : outputs) {
         this->CleanFiles.push_back(
-          this->LocalGenerator->MaybeConvertToRelativePath(currentBinDir, *o));
+          this->LocalGenerator->MaybeConvertToRelativePath(currentBinDir,
+                                                           output));
       }
     }
   }
@@ -178,18 +176,14 @@ void cmMakefileTargetGenerator::WriteTargetBuildRules()
     extraSources, this->MacOSXContentGenerator);
   std::vector<cmSourceFile const*> externalObjects;
   this->GeneratorTarget->GetExternalObjects(externalObjects, config);
-  for (std::vector<cmSourceFile const*>::const_iterator si =
-         externalObjects.begin();
-       si != externalObjects.end(); ++si) {
-    this->ExternalObjects.push_back((*si)->GetFullPath());
+  for (cmSourceFile const* sf : externalObjects) {
+    this->ExternalObjects.push_back(sf->GetFullPath());
   }
   std::vector<cmSourceFile const*> objectSources;
   this->GeneratorTarget->GetObjectSources(objectSources, config);
-  for (std::vector<cmSourceFile const*>::const_iterator si =
-         objectSources.begin();
-       si != objectSources.end(); ++si) {
+  for (cmSourceFile const* sf : objectSources) {
     // Generate this object file's rule file.
-    this->WriteObjectRuleFiles(**si);
+    this->WriteObjectRuleFiles(*sf);
   }
 }
 
@@ -272,28 +266,26 @@ void cmMakefileTargetGenerator::WriteTargetLanguageFlags()
     languages, this->Makefile->GetSafeDefinition("CMAKE_BUILD_TYPE"));
   // put the compiler in the rules.make file so that if it changes
   // things rebuild
-  for (std::set<std::string>::const_iterator l = languages.begin();
-       l != languages.end(); ++l) {
+  for (std::string const& language : languages) {
     std::string compiler = "CMAKE_";
-    compiler += *l;
+    compiler += language;
     compiler += "_COMPILER";
-    *this->FlagFileStream << "# compile " << *l << " with "
+    *this->FlagFileStream << "# compile " << language << " with "
                           << this->Makefile->GetSafeDefinition(compiler)
                           << "\n";
   }
 
-  for (std::set<std::string>::const_iterator l = languages.begin();
-       l != languages.end(); ++l) {
-    std::string flags = this->GetFlags(*l);
-    std::string defines = this->GetDefines(*l);
-    std::string includes = this->GetIncludes(*l);
+  for (std::string const& language : languages) {
+    std::string flags = this->GetFlags(language);
+    std::string defines = this->GetDefines(language);
+    std::string includes = this->GetIncludes(language);
     // Escape comment characters so they do not terminate assignment.
     cmSystemTools::ReplaceString(flags, "#", "\\#");
     cmSystemTools::ReplaceString(defines, "#", "\\#");
     cmSystemTools::ReplaceString(includes, "#", "\\#");
-    *this->FlagFileStream << *l << "_FLAGS = " << flags << "\n\n";
-    *this->FlagFileStream << *l << "_DEFINES = " << defines << "\n\n";
-    *this->FlagFileStream << *l << "_INCLUDES = " << includes << "\n\n";
+    *this->FlagFileStream << language << "_FLAGS = " << flags << "\n\n";
+    *this->FlagFileStream << language << "_DEFINES = " << defines << "\n\n";
+    *this->FlagFileStream << language << "_INCLUDES = " << includes << "\n\n";
   }
 }
 
@@ -337,7 +329,7 @@ void cmMakefileTargetGenerator::MacOSXContentGeneratorType::operator()(
     output, cmOutputConverter::SHELL);
   commands.push_back(copyCommand);
   this->Generator->LocalGenerator->WriteMakeRule(
-    *this->Generator->BuildFileStream, CM_NULLPTR, output, depends, commands,
+    *this->Generator->BuildFileStream, nullptr, output, depends, commands,
     false);
   this->Generator->ExtraFiles.insert(output);
 }
@@ -442,7 +434,7 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
   // Add flags from source file properties.
   if (const char* cflags = source.GetProperty("COMPILE_FLAGS")) {
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(cflags);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(cflags);
     const char* evaluatedFlags = cge->Evaluate(this->LocalGenerator, config,
                                                false, this->GeneratorTarget);
     this->LocalGenerator->AppendFlags(flags, evaluatedFlags);
@@ -578,7 +570,7 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
   bool const lang_has_assembly = lang_has_preprocessor;
   bool const lang_can_export_cmds = lang_has_preprocessor;
 
-  CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+  std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
     this->LocalGenerator->CreateRulePlaceholderExpander());
 
   // Construct the compile rules.
@@ -633,8 +625,11 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
       const char* tidy = this->GeneratorTarget->GetProperty(tidy_prop);
       std::string const cpplint_prop = lang + "_CPPLINT";
       const char* cpplint = this->GeneratorTarget->GetProperty(cpplint_prop);
-      if ((iwyu && *iwyu) || (tidy && *tidy) || (cpplint && *cpplint)) {
-        std::string run_iwyu = "$(CMAKE_COMMAND) -E __run_iwyu";
+      std::string const cppcheck_prop = lang + "_CPPCHECK";
+      const char* cppcheck = this->GeneratorTarget->GetProperty(cppcheck_prop);
+      if ((iwyu && *iwyu) || (tidy && *tidy) || (cpplint && *cpplint) ||
+          (cppcheck && *cppcheck)) {
+        std::string run_iwyu = "$(CMAKE_COMMAND) -E __run_co_compile";
         if (iwyu && *iwyu) {
           run_iwyu += " --iwyu=";
           run_iwyu += this->LocalGenerator->EscapeForShell(iwyu);
@@ -647,7 +642,12 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
           run_iwyu += " --cpplint=";
           run_iwyu += this->LocalGenerator->EscapeForShell(cpplint);
         }
-        if ((tidy && *tidy) || (cpplint && *cpplint)) {
+        if (cppcheck && *cppcheck) {
+          run_iwyu += " --cppcheck=";
+          run_iwyu += this->LocalGenerator->EscapeForShell(cppcheck);
+        }
+        if ((tidy && *tidy) || (cpplint && *cpplint) ||
+            (cppcheck && *cppcheck)) {
           run_iwyu += " --source=";
           run_iwyu += sourceFile;
         }
@@ -657,17 +657,16 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
     }
 
     // Maybe insert a compiler launcher like ccache or distcc
-    if (!compileCommands.empty() && (lang == "C" || lang == "CXX")) {
+    if (!compileCommands.empty() &&
+        (lang == "C" || lang == "CXX" || lang == "CUDA")) {
       std::string const clauncher_prop = lang + "_COMPILER_LAUNCHER";
       const char* clauncher =
         this->GeneratorTarget->GetProperty(clauncher_prop);
       if (clauncher && *clauncher) {
         std::vector<std::string> launcher_cmd;
         cmSystemTools::ExpandListArgument(clauncher, launcher_cmd, true);
-        for (std::vector<std::string>::iterator i = launcher_cmd.begin(),
-                                                e = launcher_cmd.end();
-             i != e; ++i) {
-          *i = this->LocalGenerator->EscapeForShell(*i);
+        for (std::string& i : launcher_cmd) {
+          i = this->LocalGenerator->EscapeForShell(i);
         }
         std::string const& run_launcher = cmJoin(launcher_cmd, " ") + " ";
         compileCommands.front().insert(0, run_launcher);
@@ -685,11 +684,10 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
     }
 
     // Expand placeholders in the commands.
-    for (std::vector<std::string>::iterator i = compileCommands.begin();
-         i != compileCommands.end(); ++i) {
-      *i = launcher + *i;
-      rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator, *i,
-                                                   vars);
+    for (std::string& compileCommand : compileCommands) {
+      compileCommand = launcher + compileCommand;
+      rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator,
+                                                   compileCommand, vars);
     }
 
     // Change the command working directory to the local build tree.
@@ -710,7 +708,7 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
   }
 
   // Write the rule.
-  this->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR, outputs, depends,
+  this->WriteMakeRule(*this->BuildFileStream, nullptr, outputs, depends,
                       commands);
 
   bool do_preprocess_rules = lang_has_preprocessor &&
@@ -750,11 +748,10 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
         vars.PreprocessedSource = shellObjI.c_str();
 
         // Expand placeholders in the commands.
-        for (std::vector<std::string>::iterator i = preprocessCommands.begin();
-             i != preprocessCommands.end(); ++i) {
+        for (std::string& preprocessCommand : preprocessCommands) {
           // no launcher for preprocessor commands
-          rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator,
-                                                       *i, vars);
+          rulePlaceholderExpander->ExpandRuleVariables(
+            this->LocalGenerator, preprocessCommand, vars);
         }
 
         this->LocalGenerator->CreateCDCommand(
@@ -769,7 +766,7 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
         commands.push_back(cmd);
       }
 
-      this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+      this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                           relativeObjI, force_depends,
                                           commands, false);
     }
@@ -799,11 +796,10 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
         vars.AssemblySource = shellObjS.c_str();
 
         // Expand placeholders in the commands.
-        for (std::vector<std::string>::iterator i = assemblyCommands.begin();
-             i != assemblyCommands.end(); ++i) {
+        for (std::string& assemblyCommand : assemblyCommands) {
           // no launcher for assembly commands
           rulePlaceholderExpander->ExpandRuleVariables(this->LocalGenerator,
-                                                       *i, vars);
+                                                       assemblyCommand, vars);
         }
 
         this->LocalGenerator->CreateCDCommand(
@@ -817,7 +813,7 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
         commands.push_back(cmd);
       }
 
-      this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+      this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                           relativeObjS, force_depends,
                                           commands, false);
     }
@@ -829,7 +825,7 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
   objectRequires += ".requires";
   std::vector<std::string> p_depends;
   // always provide an empty requires target
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       objectRequires, p_depends, no_commands,
                                       true);
 
@@ -847,14 +843,14 @@ void cmMakefileTargetGenerator::WriteObjectBuildFile(
 
   p_depends.clear();
   p_depends.push_back(objectRequires);
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       objectProvides, p_depends, r_commands,
                                       true);
 
   // write the provides.build rule dependency on the obj file
   p_depends.clear();
   p_depends.push_back(relativeObj);
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR, temp,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr, temp,
                                       p_depends, no_commands, false);
 }
 
@@ -871,16 +867,15 @@ void cmMakefileTargetGenerator::WriteTargetRequiresRules()
   // This target drives dependency generation for all object files.
   std::string relPath = this->LocalGenerator->GetHomeRelativeOutputPath();
   std::string objTarget;
-  for (std::vector<std::string>::const_iterator obj = this->Objects.begin();
-       obj != this->Objects.end(); ++obj) {
+  for (std::string const& obj : this->Objects) {
     objTarget = relPath;
-    objTarget += *obj;
+    objTarget += obj;
     objTarget += ".requires";
     depends.push_back(objTarget);
   }
 
   // Write the rule.
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       depTarget, depends, no_commands, true);
 }
 
@@ -902,7 +897,7 @@ void cmMakefileTargetGenerator::WriteTargetCleanRules()
     this->LocalGenerator->GetBinaryDirectory());
 
   // Write the rule.
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       cleanTarget, depends, commands, true);
 }
 
@@ -959,7 +954,7 @@ bool cmMakefileTargetGenerator::WriteMakeRule(
     if (!o_symbolic) {
       output_commands.push_back("@$(CMAKE_COMMAND) -E touch_nocreate " + out);
     }
-    this->LocalGenerator->WriteMakeRule(os, CM_NULLPTR, *o, output_depends,
+    this->LocalGenerator->WriteMakeRule(os, nullptr, *o, output_depends,
                                         output_commands, o_symbolic, in_help);
 
     if (!o_symbolic) {
@@ -998,12 +993,10 @@ void cmMakefileTargetGenerator::WriteTargetDependRules()
       << "# Pairs of files generated by the same build rule.\n"
       << "set(CMAKE_MULTIPLE_OUTPUT_PAIRS\n";
     /* clang-format on */
-    for (MultipleOutputPairsType::const_iterator pi =
-           this->MultipleOutputPairs.begin();
-         pi != this->MultipleOutputPairs.end(); ++pi) {
+    for (auto const& pi : this->MultipleOutputPairs) {
       *this->InfoFileStream
-        << "  " << cmOutputConverter::EscapeForCMake(pi->first) << " "
-        << cmOutputConverter::EscapeForCMake(pi->second) << "\n";
+        << "  " << cmOutputConverter::EscapeForCMake(pi.first) << " "
+        << cmOutputConverter::EscapeForCMake(pi.second) << "\n";
     }
     *this->InfoFileStream << "  )\n\n";
   }
@@ -1017,9 +1010,8 @@ void cmMakefileTargetGenerator::WriteTargetDependRules()
     << "set(CMAKE_TARGET_LINKED_INFO_FILES\n";
     /* clang-format on */
     std::vector<std::string> dirs = this->GetLinkedTargetDirectories();
-    for (std::vector<std::string>::iterator i = dirs.begin(); i != dirs.end();
-         ++i) {
-      *this->InfoFileStream << "  \"" << *i << "/DependInfo.cmake\"\n";
+    for (std::string const& d : dirs) {
+      *this->InfoFileStream << "  \"" << d << "/DependInfo.cmake\"\n";
     }
     *this->InfoFileStream << "  )\n";
   }
@@ -1106,7 +1098,7 @@ void cmMakefileTargetGenerator::WriteTargetDependRules()
   }
 
   // Write the rule.
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       depTarget, depends, commands, true);
 }
 
@@ -1117,9 +1109,8 @@ void cmMakefileTargetGenerator::DriveCustomCommands(
   std::vector<cmSourceFile*> sources;
   this->GeneratorTarget->GetSourceFiles(
     sources, this->Makefile->GetSafeDefinition("CMAKE_BUILD_TYPE"));
-  for (std::vector<cmSourceFile*>::const_iterator source = sources.begin();
-       source != sources.end(); ++source) {
-    if (cmCustomCommand* cc = (*source)->GetCustomCommand()) {
+  for (cmSourceFile* source : sources) {
+    if (cmCustomCommand* cc = source->GetCustomCommand()) {
       cmCustomCommandGenerator ccg(*cc, this->ConfigName,
                                    this->LocalGenerator);
       const std::vector<std::string>& outputs = ccg.GetOutputs();
@@ -1169,8 +1160,8 @@ void cmMakefileTargetGenerator::GenerateCustomRuleFile(
 
   // Write the rule.
   const std::vector<std::string>& outputs = ccg.GetOutputs();
-  bool symbolic = this->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
-                                      outputs, depends, commands);
+  bool symbolic = this->WriteMakeRule(*this->BuildFileStream, nullptr, outputs,
+                                      depends, commands);
 
   // If the rule has changed make sure the output is rebuilt.
   if (!symbolic) {
@@ -1178,12 +1169,10 @@ void cmMakefileTargetGenerator::GenerateCustomRuleFile(
   }
 
   // Setup implicit dependency scanning.
-  for (cmCustomCommand::ImplicitDependsList::const_iterator idi =
-         ccg.GetCC().GetImplicitDepends().begin();
-       idi != ccg.GetCC().GetImplicitDepends().end(); ++idi) {
+  for (auto const& idi : ccg.GetCC().GetImplicitDepends()) {
     std::string objFullPath = cmSystemTools::CollapseFullPath(outputs[0]);
-    std::string srcFullPath = cmSystemTools::CollapseFullPath(idi->second);
-    this->LocalGenerator->AddImplicitDepends(this->GeneratorTarget, idi->first,
+    std::string srcFullPath = cmSystemTools::CollapseFullPath(idi.second);
+    this->LocalGenerator->AddImplicitDepends(this->GeneratorTarget, idi.first,
                                              objFullPath.c_str(),
                                              srcFullPath.c_str());
   }
@@ -1216,11 +1205,10 @@ void cmMakefileTargetGenerator::WriteObjectsVariable(
   if (!lineContinue) {
     lineContinue = "\\";
   }
-  for (std::vector<std::string>::const_iterator i = this->Objects.begin();
-       i != this->Objects.end(); ++i) {
+  for (std::string const& obj : this->Objects) {
     *this->BuildFileStream << " " << lineContinue << "\n";
     *this->BuildFileStream << this->LocalGenerator->ConvertToQuotedOutputPath(
-      i->c_str(), useWatcomQuote);
+      obj.c_str(), useWatcomQuote);
   }
   *this->BuildFileStream << "\n";
 
@@ -1237,14 +1225,12 @@ void cmMakefileTargetGenerator::WriteObjectsVariable(
   /* clang-format on */
   std::string currentBinDir =
     this->LocalGenerator->GetCurrentBinaryDirectory();
-  for (std::vector<std::string>::const_iterator i =
-         this->ExternalObjects.begin();
-       i != this->ExternalObjects.end(); ++i) {
+  for (std::string const& obj : this->ExternalObjects) {
     object =
-      this->LocalGenerator->MaybeConvertToRelativePath(currentBinDir, *i);
+      this->LocalGenerator->MaybeConvertToRelativePath(currentBinDir, obj);
     *this->BuildFileStream << " " << lineContinue << "\n";
     *this->BuildFileStream << this->LocalGenerator->ConvertToQuotedOutputPath(
-      i->c_str(), useWatcomQuote);
+      obj.c_str(), useWatcomQuote);
   }
   *this->BuildFileStream << "\n"
                          << "\n";
@@ -1275,7 +1261,7 @@ public:
         (this->CurrentString.length() + 1 + this->NextObject.length() >
          this->LengthLimit)) {
       this->Strings.push_back(this->CurrentString);
-      this->CurrentString = "";
+      this->CurrentString.clear();
       this->Space = "";
     }
 
@@ -1314,14 +1300,11 @@ void cmMakefileTargetGenerator::WriteObjectsStrings(
   cmMakefileTargetGeneratorObjectStrings helper(
     objStrings, this->LocalGenerator,
     this->LocalGenerator->GetStateSnapshot().GetDirectory(), limit);
-  for (std::vector<std::string>::const_iterator i = this->Objects.begin();
-       i != this->Objects.end(); ++i) {
-    helper.Feed(*i);
+  for (std::string const& obj : this->Objects) {
+    helper.Feed(obj);
   }
-  for (std::vector<std::string>::const_iterator i =
-         this->ExternalObjects.begin();
-       i != this->ExternalObjects.end(); ++i) {
-    helper.Feed(*i);
+  for (std::string const& obj : this->ExternalObjects) {
+    helper.Feed(obj);
   }
   helper.Done();
 }
@@ -1341,7 +1324,7 @@ void cmMakefileTargetGenerator::WriteTargetDriverRule(
   std::vector<std::string> depends;
   depends.push_back(main_output);
 
-  const char* comment = CM_NULLPTR;
+  const char* comment = nullptr;
   if (relink) {
     // Setup the comment for the preinstall driver.
     comment = "Rule to relink during preinstall.";
@@ -1389,10 +1372,9 @@ void cmMakefileTargetGenerator::AppendObjectDepends(
   // Add dependencies on the compiled object files.
   std::string relPath = this->LocalGenerator->GetHomeRelativeOutputPath();
   std::string objTarget;
-  for (std::vector<std::string>::const_iterator obj = this->Objects.begin();
-       obj != this->Objects.end(); ++obj) {
+  for (std::string const& obj : this->Objects) {
     objTarget = relPath;
-    objTarget += *obj;
+    objTarget += obj;
     depends.push_back(objTarget);
   }
 
@@ -1417,19 +1399,16 @@ void cmMakefileTargetGenerator::AppendLinkDepends(
   if (cmGeneratorTarget::ModuleDefinitionInfo const* mdi =
         this->GeneratorTarget->GetModuleDefinitionInfo(
           this->GetConfigName())) {
-    for (std::vector<cmSourceFile const*>::const_iterator i =
-           mdi->Sources.begin();
-         i != mdi->Sources.end(); ++i) {
-      depends.push_back((*i)->GetFullPath());
+    for (cmSourceFile const* src : mdi->Sources) {
+      depends.push_back(src->GetFullPath());
     }
   }
 
   // Add a dependency on user-specified manifest files, if any.
   std::vector<cmSourceFile const*> manifest_srcs;
   this->GeneratorTarget->GetManifests(manifest_srcs, this->ConfigName);
-  for (std::vector<cmSourceFile const*>::iterator mi = manifest_srcs.begin();
-       mi != manifest_srcs.end(); ++mi) {
-    depends.push_back((*mi)->GetFullPath());
+  for (cmSourceFile const* manifest_src : manifest_srcs) {
+    depends.push_back(manifest_src->GetFullPath());
   }
 
   // Add user-specified dependencies.
@@ -1472,12 +1451,11 @@ void cmMakefileTargetGenerator::CreateLinkScript(
   linkScriptName += name;
   cmGeneratedFileStream linkScriptStream(linkScriptName.c_str());
   linkScriptStream.SetCopyIfDifferent(true);
-  for (std::vector<std::string>::const_iterator cmd = link_commands.begin();
-       cmd != link_commands.end(); ++cmd) {
+  for (std::string const& link_command : link_commands) {
     // Do not write out empty commands or commands beginning in the
     // shell no-op ":".
-    if (!cmd->empty() && (*cmd)[0] != ':') {
-      linkScriptStream << *cmd << "\n";
+    if (!link_command.empty() && link_command[0] != ':') {
+      linkScriptStream << link_command << "\n";
     }
   }
 
@@ -1512,14 +1490,11 @@ bool cmMakefileTargetGenerator::CheckUseResponseFileForObjects(
     // actual list will likely be much shorter than this.  However, in the
     // worst case all objects will remain as absolute paths.
     size_t length = 0;
-    for (std::vector<std::string>::const_iterator i = this->Objects.begin();
-         i != this->Objects.end(); ++i) {
-      length += i->size() + 3;
+    for (std::string const& obj : this->Objects) {
+      length += obj.size() + 3;
     }
-    for (std::vector<std::string>::const_iterator i =
-           this->ExternalObjects.begin();
-         i != this->ExternalObjects.end(); ++i) {
-      length += i->size() + 3;
+    for (std::string const& ext_obj : this->ExternalObjects) {
+      length += ext_obj.size() + 3;
     }
 
     // We need to guarantee room for both objects and libraries, so
@@ -1742,22 +1717,17 @@ void cmMakefileTargetGenerator::GenDefFile(
   cmGeneratedFileStream fout(objlist_file.c_str());
 
   if (mdi->WindowsExportAllSymbols) {
-    for (std::vector<std::string>::const_iterator i = this->Objects.begin();
-         i != this->Objects.end(); ++i) {
-      if (cmHasLiteralSuffix(*i, ".obj")) {
-        fout << *i << "\n";
+    for (std::string const& obj : this->Objects) {
+      if (cmHasLiteralSuffix(obj, ".obj")) {
+        fout << obj << "\n";
       }
     }
-    for (std::vector<std::string>::const_iterator i =
-           this->ExternalObjects.begin();
-         i != this->ExternalObjects.end(); ++i) {
-      fout << *i << "\n";
+    for (std::string const& obj : this->ExternalObjects) {
+      fout << obj << "\n";
     }
   }
 
-  for (std::vector<cmSourceFile const*>::const_iterator i =
-         mdi->Sources.begin();
-       i != mdi->Sources.end(); ++i) {
-    fout << (*i)->GetFullPath() << "\n";
+  for (cmSourceFile const* src : mdi->Sources) {
+    fout << src->GetFullPath() << "\n";
   }
 }
diff --git a/Source/cmMakefileTargetGenerator.h b/Source/cmMakefileTargetGenerator.h
index 92c9f60b0..5ab7e36b0 100644
--- a/Source/cmMakefileTargetGenerator.h
+++ b/Source/cmMakefileTargetGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmMakefileTargetGenerator_h
 #define cmMakefileTargetGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <map>
@@ -33,7 +33,7 @@ class cmMakefileTargetGenerator : public cmCommonTargetGenerator
 public:
   // constructor to set the ivars
   cmMakefileTargetGenerator(cmGeneratorTarget* target);
-  ~cmMakefileTargetGenerator() CM_OVERRIDE;
+  ~cmMakefileTargetGenerator() override;
 
   // construct using this factory call
   static cmMakefileTargetGenerator* New(cmGeneratorTarget* tgt);
@@ -81,8 +81,7 @@ protected:
     {
     }
 
-    void operator()(cmSourceFile const& source,
-                    const char* pkgloc) CM_OVERRIDE;
+    void operator()(cmSourceFile const& source, const char* pkgloc) override;
 
   private:
     cmMakefileTargetGenerator* Generator;
@@ -168,8 +167,7 @@ protected:
   /** Add commands for generate def files */
   void GenDefFile(std::vector<std::string>& real_link_commands);
 
-  void AddIncludeFlags(std::string& flags,
-                       const std::string& lang) CM_OVERRIDE;
+  void AddIncludeFlags(std::string& flags, const std::string& lang) override;
 
   virtual void CloseFileStreams();
   cmLocalUnixMakefileGenerator3* LocalGenerator;
diff --git a/Source/cmMakefileUtilityTargetGenerator.cxx b/Source/cmMakefileUtilityTargetGenerator.cxx
index a7c5d27f2..46df0d89c 100644
--- a/Source/cmMakefileUtilityTargetGenerator.cxx
+++ b/Source/cmMakefileUtilityTargetGenerator.cxx
@@ -95,7 +95,7 @@ void cmMakefileUtilityTargetGenerator::WriteRuleFiles()
   }
 
   // Write the rule.
-  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, CM_NULLPTR,
+  this->LocalGenerator->WriteMakeRule(*this->BuildFileStream, nullptr,
                                       this->GeneratorTarget->GetName(),
                                       depends, commands, true);
 
diff --git a/Source/cmMakefileUtilityTargetGenerator.h b/Source/cmMakefileUtilityTargetGenerator.h
index 8df5dd46f..be243a7f5 100644
--- a/Source/cmMakefileUtilityTargetGenerator.h
+++ b/Source/cmMakefileUtilityTargetGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmMakefileUtilityTargetGenerator_h
 #define cmMakefileUtilityTargetGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmMakefileTargetGenerator.h"
 
@@ -13,11 +13,11 @@ class cmMakefileUtilityTargetGenerator : public cmMakefileTargetGenerator
 {
 public:
   cmMakefileUtilityTargetGenerator(cmGeneratorTarget* target);
-  ~cmMakefileUtilityTargetGenerator() CM_OVERRIDE;
+  ~cmMakefileUtilityTargetGenerator() override;
 
   /* the main entry point for this class. Writes the Makefiles associated
      with this target */
-  void WriteRuleFiles() CM_OVERRIDE;
+  void WriteRuleFiles() override;
 
 protected:
 };
diff --git a/Source/cmMarkAsAdvancedCommand.cxx b/Source/cmMarkAsAdvancedCommand.cxx
index 14fd96f08..45c59b999 100644
--- a/Source/cmMarkAsAdvancedCommand.cxx
+++ b/Source/cmMarkAsAdvancedCommand.cxx
@@ -34,7 +34,7 @@ bool cmMarkAsAdvancedCommand::InitialPass(std::vector<std::string> const& args,
     cmState* state = this->Makefile->GetState();
     if (!state->GetCacheEntryValue(variable)) {
       this->Makefile->GetCMakeInstance()->AddCacheEntry(
-        variable, CM_NULLPTR, CM_NULLPTR, cmStateEnums::UNINITIALIZED);
+        variable, nullptr, nullptr, cmStateEnums::UNINITIALIZED);
       overwrite = true;
     }
     if (!state->GetCacheEntryValue(variable)) {
diff --git a/Source/cmMarkAsAdvancedCommand.h b/Source/cmMarkAsAdvancedCommand.h
index a7791a932..5dd198f62 100644
--- a/Source/cmMarkAsAdvancedCommand.h
+++ b/Source/cmMarkAsAdvancedCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmMarkAsAdvancedCommand_h
 #define cmMarkAsAdvancedCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmMarkAsAdvancedCommand; }
+  cmCommand* Clone() override { return new cmMarkAsAdvancedCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmMathCommand.h b/Source/cmMathCommand.h
index 67dbdda37..0c6c76bb1 100644
--- a/Source/cmMathCommand.h
+++ b/Source/cmMathCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmMathCommand_h
 #define cmMathCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -19,14 +19,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmMathCommand; }
+  cmCommand* Clone() override { return new cmMathCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 protected:
   bool HandleExprCommand(std::vector<std::string> const& args);
diff --git a/Source/cmMessageCommand.h b/Source/cmMessageCommand.h
index 96939e514..819ebdacf 100644
--- a/Source/cmMessageCommand.h
+++ b/Source/cmMessageCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmMessageCommand_h
 #define cmMessageCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -22,14 +22,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmMessageCommand; }
+  cmCommand* Clone() override { return new cmMessageCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmNinjaLinkLineComputer.h b/Source/cmNinjaLinkLineComputer.h
index 13f05a838..0ed53f45a 100644
--- a/Source/cmNinjaLinkLineComputer.h
+++ b/Source/cmNinjaLinkLineComputer.h
@@ -4,7 +4,7 @@
 #ifndef cmNinjaLinkLineComputer_h
 #define cmNinjaLinkLineComputer_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
@@ -23,8 +23,7 @@ public:
                           cmStateDirectory const& stateDir,
                           cmGlobalNinjaGenerator const* gg);
 
-  std::string ConvertToLinkReference(std::string const& input) const
-    CM_OVERRIDE;
+  std::string ConvertToLinkReference(std::string const& input) const override;
 
 private:
   cmGlobalNinjaGenerator const* GG;
diff --git a/Source/cmNinjaNormalTargetGenerator.cxx b/Source/cmNinjaNormalTargetGenerator.cxx
index 14a4ef824..e0cc35a15 100644
--- a/Source/cmNinjaNormalTargetGenerator.cxx
+++ b/Source/cmNinjaNormalTargetGenerator.cxx
@@ -6,11 +6,11 @@
 #include <assert.h>
 #include <iterator>
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <set>
 #include <sstream>
 
 #include "cmAlgorithms.h"
-#include "cmCustomCommand.h"
 #include "cmCustomCommandGenerator.h"
 #include "cmGeneratedFileStream.h"
 #include "cmGeneratorTarget.h"
@@ -30,9 +30,10 @@
 #include "cmStateSnapshot.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
+class cmCustomCommand;
+
 cmNinjaNormalTargetGenerator::cmNinjaNormalTargetGenerator(
   cmGeneratorTarget* target)
   : cmNinjaTargetGenerator(target)
@@ -112,17 +113,14 @@ void cmNinjaNormalTargetGenerator::WriteLanguagesRules()
   std::vector<cmSourceFile const*> sourceFiles;
   this->GetGeneratorTarget()->GetObjectSources(
     sourceFiles, this->GetMakefile()->GetSafeDefinition("CMAKE_BUILD_TYPE"));
-  for (std::vector<cmSourceFile const*>::const_iterator i =
-         sourceFiles.begin();
-       i != sourceFiles.end(); ++i) {
-    const std::string& lang = (*i)->GetLanguage();
+  for (cmSourceFile const* sf : sourceFiles) {
+    std::string const lang = sf->GetLanguage();
     if (!lang.empty()) {
       languages.insert(lang);
     }
   }
-  for (std::set<std::string>::const_iterator l = languages.begin();
-       l != languages.end(); ++l) {
-    this->WriteLanguageRules(*l);
+  for (std::string const& language : languages) {
+    this->WriteLanguageRules(language);
   }
 }
 
@@ -142,7 +140,7 @@ const char* cmNinjaNormalTargetGenerator::GetVisibleTypeName() const
     case cmStateEnums::EXECUTABLE:
       return "executable";
     default:
-      return CM_NULLPTR;
+      return nullptr;
   }
 }
 
@@ -243,16 +241,15 @@ void cmNinjaNormalTargetGenerator::WriteDeviceLinkRule(bool useResponseFile)
       launcher += " ";
     }
 
-    CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+    std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
       this->GetLocalGenerator()->CreateRulePlaceholderExpander());
 
     // Rule for linking library/executable.
     std::vector<std::string> linkCmds = this->ComputeDeviceLinkCmd();
-    for (std::vector<std::string>::iterator i = linkCmds.begin();
-         i != linkCmds.end(); ++i) {
-      *i = launcher + *i;
+    for (std::string& linkCmd : linkCmds) {
+      linkCmd = launcher + linkCmd;
       rulePlaceholderExpander->ExpandRuleVariables(this->GetLocalGenerator(),
-                                                   *i, vars);
+                                                   linkCmd, vars);
     }
 
     // If there is no ranlib the command will be ":".  Skip it.
@@ -368,16 +365,15 @@ void cmNinjaNormalTargetGenerator::WriteLinkRule(bool useResponseFile)
       launcher += " ";
     }
 
-    CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+    std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
       this->GetLocalGenerator()->CreateRulePlaceholderExpander());
 
     // Rule for linking library/executable.
     std::vector<std::string> linkCmds = this->ComputeLinkCmd();
-    for (std::vector<std::string>::iterator i = linkCmds.begin();
-         i != linkCmds.end(); ++i) {
-      *i = launcher + *i;
+    for (std::string& linkCmd : linkCmds) {
+      linkCmd = launcher + linkCmd;
       rulePlaceholderExpander->ExpandRuleVariables(this->GetLocalGenerator(),
-                                                   *i, vars);
+                                                   linkCmd, vars);
     }
 
     // If there is no ranlib the command will be ":".  Skip it.
@@ -409,10 +405,14 @@ void cmNinjaNormalTargetGenerator::WriteLinkRule(bool useResponseFile)
       this->GetLocalGenerator()->ConvertToOutputFormat(
         cmSystemTools::GetCMakeCommand(), cmOutputConverter::SHELL);
     if (targetType == cmStateEnums::EXECUTABLE) {
+      std::vector<std::string> commandLines;
+      commandLines.push_back(cmakeCommand +
+                             " -E cmake_symlink_executable $in $out");
+      commandLines.push_back("$POST_BUILD");
+
       this->GetGlobalGenerator()->AddRule(
         "CMAKE_SYMLINK_EXECUTABLE",
-        cmakeCommand + " -E cmake_symlink_executable"
-                       " $in $out && $POST_BUILD",
+        this->GetLocalGenerator()->BuildCommandLine(commandLines),
         "Creating executable symlink $out", "Rule for creating "
                                             "executable symlink.",
         /*depfile*/ "",
@@ -422,10 +422,14 @@ void cmNinjaNormalTargetGenerator::WriteLinkRule(bool useResponseFile)
         /*restat*/ "",
         /*generator*/ false);
     } else {
+      std::vector<std::string> commandLines;
+      commandLines.push_back(cmakeCommand +
+                             " -E cmake_symlink_library $in $SONAME $out");
+      commandLines.push_back("$POST_BUILD");
+
       this->GetGlobalGenerator()->AddRule(
         "CMAKE_SYMLINK_LIBRARY",
-        cmakeCommand + " -E cmake_symlink_library"
-                       " $in $SONAME $out && $POST_BUILD",
+        this->GetLocalGenerator()->BuildCommandLine(commandLines),
         "Creating library symlink $out", "Rule for creating "
                                          "library symlink.",
         /*depfile*/ "",
@@ -477,12 +481,21 @@ std::vector<std::string> cmNinjaNormalTargetGenerator::ComputeLinkCmd()
       this->TargetLinkLanguage, this->GetConfigName());
     const char* linkCmd = mf->GetDefinition(linkCmdVar);
     if (linkCmd) {
-      cmSystemTools::ExpandListArgument(linkCmd, linkCmds);
+      std::string linkCmdStr = linkCmd;
+      if (this->GetGeneratorTarget()->HasImplibGNUtoMS()) {
+        std::string ruleVar = "CMAKE_";
+        ruleVar += this->GeneratorTarget->GetLinkerLanguage(this->ConfigName);
+        ruleVar += "_GNUtoMS_RULE";
+        if (const char* rule = this->Makefile->GetDefinition(ruleVar)) {
+          linkCmdStr += rule;
+        }
+      }
+      cmSystemTools::ExpandListArgument(linkCmdStr, linkCmds);
       if (this->GetGeneratorTarget()->GetPropertyAsBool("LINK_WHAT_YOU_USE")) {
         std::string cmakeCommand =
           this->GetLocalGenerator()->ConvertToOutputFormat(
             cmSystemTools::GetCMakeCommand(), cmLocalGenerator::SHELL);
-        cmakeCommand += " -E __run_iwyu --lwyu=";
+        cmakeCommand += " -E __run_co_compile --lwyu=";
         cmGeneratorTarget& gt = *this->GetGeneratorTarget();
         const std::string cfgName = this->GetConfigName();
         std::string targetOutput = ConvertToNinjaPath(gt.GetFullPath(cfgName));
@@ -623,7 +636,7 @@ void cmNinjaNormalTargetGenerator::WriteDeviceLinkStatement()
   vars["TARGET_FILE"] =
     localGen.ConvertToOutputFormat(targetOutputReal, cmOutputConverter::SHELL);
 
-  CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+  std::unique_ptr<cmLinkLineComputer> linkLineComputer(
     new cmNinjaLinkLineDeviceComputer(
       this->GetLocalGenerator(),
       this->GetLocalGenerator()->GetStateSnapshot().GetDirectory(),
@@ -654,7 +667,7 @@ void cmNinjaNormalTargetGenerator::WriteDeviceLinkStatement()
     std::string t = vars["ARCH_FLAGS"];
     localGen.AddArchitectureFlags(t, &genTarget, cudaLinkLanguage, cfgName);
     vars["ARCH_FLAGS"] = t;
-    t = "";
+    t.clear();
     localGen.AddLanguageFlagsForLinking(t, &genTarget, cudaLinkLanguage,
                                         cfgName);
     vars["LANGUAGE_COMPILE_FLAGS"] = t;
@@ -714,10 +727,8 @@ void cmNinjaNormalTargetGenerator::WriteDeviceLinkStatement()
                                                 &postBuildCmdLines };
 
   for (unsigned i = 0; i != 3; ++i) {
-    for (std::vector<cmCustomCommand>::const_iterator ci =
-           cmdLists[i]->begin();
-         ci != cmdLists[i]->end(); ++ci) {
-      cmCustomCommandGenerator ccg(*ci, cfgName, this->GetLocalGenerator());
+    for (cmCustomCommand const& cc : *cmdLists[i]) {
+      cmCustomCommandGenerator ccg(cc, cfgName, this->GetLocalGenerator());
       localGen.AppendCustomCommandLines(ccg, *cmdLineLists[i]);
       std::vector<std::string> const& ccByproducts = ccg.GetByproducts();
       std::transform(ccByproducts.begin(), ccByproducts.end(),
@@ -828,7 +839,7 @@ void cmNinjaNormalTargetGenerator::WriteLinkStatement()
   vars["TARGET_FILE"] =
     localGen.ConvertToOutputFormat(targetOutputReal, cmOutputConverter::SHELL);
 
-  CM_AUTO_PTR<cmLinkLineComputer> linkLineComputer(
+  std::unique_ptr<cmLinkLineComputer> linkLineComputer(
     this->GetGlobalGenerator()->CreateLinkLineComputer(
       this->GetLocalGenerator(),
       this->GetLocalGenerator()->GetStateSnapshot().GetDirectory()));
@@ -873,7 +884,7 @@ void cmNinjaNormalTargetGenerator::WriteLinkStatement()
     std::string t = vars["ARCH_FLAGS"];
     localGen.AddArchitectureFlags(t, &genTarget, TargetLinkLanguage, cfgName);
     vars["ARCH_FLAGS"] = t;
-    t = "";
+    t.clear();
     t += lwyuFlags;
     localGen.AddLanguageFlagsForLinking(t, &genTarget, TargetLinkLanguage,
                                         cfgName);
@@ -943,10 +954,8 @@ void cmNinjaNormalTargetGenerator::WriteLinkStatement()
                                                 &postBuildCmdLines };
 
   for (unsigned i = 0; i != 3; ++i) {
-    for (std::vector<cmCustomCommand>::const_iterator ci =
-           cmdLists[i]->begin();
-         ci != cmdLists[i]->end(); ++ci) {
-      cmCustomCommandGenerator ccg(*ci, cfgName, this->GetLocalGenerator());
+    for (cmCustomCommand const& cc : *cmdLists[i]) {
+      cmCustomCommandGenerator ccg(cc, cfgName, this->GetLocalGenerator());
       localGen.AppendCustomCommandLines(ccg, *cmdLineLists[i]);
       std::vector<std::string> const& ccByproducts = ccg.GetByproducts();
       std::transform(ccByproducts.begin(), ccByproducts.end(),
@@ -976,17 +985,15 @@ void cmNinjaNormalTargetGenerator::WriteLinkStatement()
 
     if (mdi->WindowsExportAllSymbols) {
       cmNinjaDeps objs = this->GetObjects();
-      for (cmNinjaDeps::iterator i = objs.begin(); i != objs.end(); ++i) {
-        if (cmHasLiteralSuffix(*i, ".obj")) {
-          fout << *i << "\n";
+      for (std::string const& obj : objs) {
+        if (cmHasLiteralSuffix(obj, ".obj")) {
+          fout << obj << "\n";
         }
       }
     }
 
-    for (std::vector<cmSourceFile const*>::const_iterator i =
-           mdi->Sources.begin();
-         i != mdi->Sources.end(); ++i) {
-      fout << (*i)->GetFullPath() << "\n";
+    for (cmSourceFile const* src : mdi->Sources) {
+      fout << src->GetFullPath() << "\n";
     }
   }
   // If we have any PRE_LINK commands, we need to go back to CMAKE_BINARY_DIR
@@ -1033,11 +1040,9 @@ void cmNinjaNormalTargetGenerator::WriteLinkStatement()
   // Ninja should restat after linking if and only if there are byproducts.
   vars["RESTAT"] = byproducts.empty() ? "" : "1";
 
-  for (cmNinjaDeps::const_iterator oi = byproducts.begin(),
-                                   oe = byproducts.end();
-       oi != oe; ++oi) {
-    this->GetGlobalGenerator()->SeenCustomCommandOutput(*oi);
-    outputs.push_back(*oi);
+  for (std::string const& o : byproducts) {
+    this->GetGlobalGenerator()->SeenCustomCommandOutput(o);
+    outputs.push_back(o);
   }
 
   // Write the build statement for this target.
@@ -1065,7 +1070,7 @@ void cmNinjaNormalTargetGenerator::WriteLinkStatement()
       if (targetOutputReal == soName || targetOutput == soName) {
         symlinkVars["SONAME"] = soName;
       } else {
-        symlinkVars["SONAME"] = "";
+        symlinkVars["SONAME"].clear();
         symlinks.push_back(soName);
       }
       symlinks.push_back(targetOutput);
diff --git a/Source/cmNinjaNormalTargetGenerator.h b/Source/cmNinjaNormalTargetGenerator.h
index 677b1c666..01cc8816e 100644
--- a/Source/cmNinjaNormalTargetGenerator.h
+++ b/Source/cmNinjaNormalTargetGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmNinjaNormalTargetGenerator_h
 #define cmNinjaNormalTargetGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmNinjaTargetGenerator.h"
 
@@ -16,9 +16,9 @@ class cmNinjaNormalTargetGenerator : public cmNinjaTargetGenerator
 {
 public:
   cmNinjaNormalTargetGenerator(cmGeneratorTarget* target);
-  ~cmNinjaNormalTargetGenerator() CM_OVERRIDE;
+  ~cmNinjaNormalTargetGenerator() override;
 
-  void Generate() CM_OVERRIDE;
+  void Generate() override;
 
 private:
   std::string LanguageLinkerRule() const;
diff --git a/Source/cmNinjaTargetGenerator.cxx b/Source/cmNinjaTargetGenerator.cxx
index d38dbcb09..5805259a5 100644
--- a/Source/cmNinjaTargetGenerator.cxx
+++ b/Source/cmNinjaTargetGenerator.cxx
@@ -8,6 +8,7 @@
 #include <assert.h>
 #include <iterator>
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <string.h>
 
@@ -29,7 +30,6 @@
 #include "cmState.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 cmNinjaTargetGenerator* cmNinjaTargetGenerator::New(cmGeneratorTarget* target)
@@ -47,14 +47,14 @@ cmNinjaTargetGenerator* cmNinjaTargetGenerator::New(cmGeneratorTarget* target)
       return new cmNinjaUtilityTargetGenerator(target);
 
     default:
-      return CM_NULLPTR;
+      return nullptr;
   }
 }
 
 cmNinjaTargetGenerator::cmNinjaTargetGenerator(cmGeneratorTarget* target)
   : cmCommonTargetGenerator(target)
-  , MacOSXContentGenerator(CM_NULLPTR)
-  , OSXBundleGenerator(CM_NULLPTR)
+  , MacOSXContentGenerator(nullptr)
+  , OSXBundleGenerator(nullptr)
   , MacContentFolders()
   , LocalGenerator(
       static_cast<cmLocalNinjaGenerator*>(target->GetLocalGenerator()))
@@ -138,7 +138,7 @@ std::string cmNinjaTargetGenerator::ComputeFlagsForObject(
   if (const char* cflags = source->GetProperty("COMPILE_FLAGS")) {
     std::string config = this->LocalGenerator->GetConfigName();
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(cflags);
+    std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(cflags);
     const char* evaluatedFlags = cge->Evaluate(this->LocalGenerator, config,
                                                false, this->GeneratorTarget);
     this->LocalGenerator->AppendFlags(flags, evaluatedFlags);
@@ -215,19 +215,16 @@ cmNinjaDeps cmNinjaTargetGenerator::ComputeLinkDeps() const
   if (cmGeneratorTarget::ModuleDefinitionInfo const* mdi =
         this->GeneratorTarget->GetModuleDefinitionInfo(
           this->GetConfigName())) {
-    for (std::vector<cmSourceFile const*>::const_iterator i =
-           mdi->Sources.begin();
-         i != mdi->Sources.end(); ++i) {
-      result.push_back(this->ConvertToNinjaPath((*i)->GetFullPath()));
+    for (cmSourceFile const* src : mdi->Sources) {
+      result.push_back(this->ConvertToNinjaPath(src->GetFullPath()));
     }
   }
 
   // Add a dependency on user-specified manifest files, if any.
   std::vector<cmSourceFile const*> manifest_srcs;
   this->GeneratorTarget->GetManifests(manifest_srcs, this->ConfigName);
-  for (std::vector<cmSourceFile const*>::iterator mi = manifest_srcs.begin();
-       mi != manifest_srcs.end(); ++mi) {
-    result.push_back(this->ConvertToNinjaPath((*mi)->GetFullPath()));
+  for (cmSourceFile const* manifest_src : manifest_srcs) {
+    result.push_back(this->ConvertToNinjaPath(manifest_src->GetFullPath()));
   }
 
   // Add user-specified dependencies.
@@ -428,7 +425,7 @@ void cmNinjaTargetGenerator::WriteCompileRule(const std::string& lang)
     // The explicit preprocessing step will handle dependency scanning.
   } else if (this->NeedDepTypeMSVC(lang)) {
     deptype = "msvc";
-    depfile = "";
+    depfile.clear();
     flags += " /showIncludes";
   } else if (mf->IsOn("CMAKE_NINJA_CMCLDEPS_" + lang)) {
     // For the MS resource compiler we need cmcldeps, but skip dependencies
@@ -441,7 +438,7 @@ void cmNinjaTargetGenerator::WriteCompileRule(const std::string& lang)
         : mf->GetSafeDefinition("CMAKE_CXX_COMPILER");
       cldeps = "\"";
       cldeps += cmSystemTools::GetCMClDepsCommand();
-      cldeps += "\" " + lang + " " + vars.Source + " \"$DEP_FILE\" $out \"";
+      cldeps += "\" " + lang + " " + vars.Source + " $DEP_FILE $out \"";
       cldeps += mf->GetSafeDefinition("CMAKE_CL_SHOWINCLUDES_PREFIX");
       cldeps += "\" \"" + cl + "\" ";
     }
@@ -466,7 +463,7 @@ void cmNinjaTargetGenerator::WriteCompileRule(const std::string& lang)
   vars.Flags = flags.c_str();
   vars.DependencyFile = depfile.c_str();
 
-  CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+  std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
     this->GetLocalGenerator()->CreateRulePlaceholderExpander());
 
   std::string const tdi = this->GetLocalGenerator()->ConvertToOutputFormat(
@@ -519,11 +516,10 @@ void cmNinjaTargetGenerator::WriteCompileRule(const std::string& lang)
     std::vector<std::string> ppCmds;
     cmSystemTools::ExpandListArgument(ppCmd, ppCmds);
 
-    for (std::vector<std::string>::iterator i = ppCmds.begin();
-         i != ppCmds.end(); ++i) {
-      *i = launcher + *i;
+    for (std::string& i : ppCmds) {
+      i = launcher + i;
       rulePlaceholderExpander->ExpandRuleVariables(this->GetLocalGenerator(),
-                                                   *i, ppVars);
+                                                   i, ppVars);
     }
 
     // Run CMake dependency scanner on preprocessed output.
@@ -557,17 +553,11 @@ void cmNinjaTargetGenerator::WriteCompileRule(const std::string& lang)
     // Write the rule for ninja dyndep file generation.
     std::vector<std::string> ddCmds;
 
-#ifdef _WIN32
-    // Windows command line length is limited -> use response file for dyndep
-    // rules
+    // Command line length is almost always limited -> use response file for
+    // dyndep rules
     std::string ddRspFile = "$out.rsp";
     std::string ddRspContent = "$in";
     std::string ddInput = "@" + ddRspFile;
-#else
-    std::string ddRspFile;
-    std::string ddRspContent;
-    std::string ddInput = "$in";
-#endif
 
     // Run CMake dependency scanner on preprocessed output.
     std::string const cmake = this->GetLocalGenerator()->ConvertToOutputFormat(
@@ -623,10 +613,13 @@ void cmNinjaTargetGenerator::WriteCompileRule(const std::string& lang)
     const char* tidy = this->GeneratorTarget->GetProperty(tidy_prop);
     std::string const cpplint_prop = lang + "_CPPLINT";
     const char* cpplint = this->GeneratorTarget->GetProperty(cpplint_prop);
-    if ((iwyu && *iwyu) || (tidy && *tidy) || (cpplint && *cpplint)) {
+    std::string const cppcheck_prop = lang + "_CPPCHECK";
+    const char* cppcheck = this->GeneratorTarget->GetProperty(cppcheck_prop);
+    if ((iwyu && *iwyu) || (tidy && *tidy) || (cpplint && *cpplint) ||
+        (cppcheck && *cppcheck)) {
       std::string run_iwyu = this->GetLocalGenerator()->ConvertToOutputFormat(
         cmSystemTools::GetCMakeCommand(), cmOutputConverter::SHELL);
-      run_iwyu += " -E __run_iwyu";
+      run_iwyu += " -E __run_co_compile";
       if (iwyu && *iwyu) {
         run_iwyu += " --iwyu=";
         run_iwyu += this->GetLocalGenerator()->EscapeForShell(iwyu);
@@ -639,7 +632,12 @@ void cmNinjaTargetGenerator::WriteCompileRule(const std::string& lang)
         run_iwyu += " --cpplint=";
         run_iwyu += this->GetLocalGenerator()->EscapeForShell(cpplint);
       }
-      if ((tidy && *tidy) || (cpplint && *cpplint)) {
+      if (cppcheck && *cppcheck) {
+        run_iwyu += " --cppcheck=";
+        run_iwyu += this->GetLocalGenerator()->EscapeForShell(cppcheck);
+      }
+      if ((tidy && *tidy) || (cpplint && *cpplint) ||
+          (cppcheck && *cppcheck)) {
         run_iwyu += " --source=$in";
       }
       run_iwyu += " -- ";
@@ -648,16 +646,15 @@ void cmNinjaTargetGenerator::WriteCompileRule(const std::string& lang)
   }
 
   // Maybe insert a compiler launcher like ccache or distcc
-  if (!compileCmds.empty() && (lang == "C" || lang == "CXX")) {
+  if (!compileCmds.empty() &&
+      (lang == "C" || lang == "CXX" || lang == "CUDA")) {
     std::string const clauncher_prop = lang + "_COMPILER_LAUNCHER";
     const char* clauncher = this->GeneratorTarget->GetProperty(clauncher_prop);
     if (clauncher && *clauncher) {
       std::vector<std::string> launcher_cmd;
       cmSystemTools::ExpandListArgument(clauncher, launcher_cmd, true);
-      for (std::vector<std::string>::iterator i = launcher_cmd.begin(),
-                                              e = launcher_cmd.end();
-           i != e; ++i) {
-        *i = this->LocalGenerator->EscapeForShell(*i);
+      for (std::string& i : launcher_cmd) {
+        i = this->LocalGenerator->EscapeForShell(i);
       }
       std::string const& run_launcher = cmJoin(launcher_cmd, " ") + " ";
       compileCmds.front().insert(0, run_launcher);
@@ -668,10 +665,9 @@ void cmNinjaTargetGenerator::WriteCompileRule(const std::string& lang)
     compileCmds.front().insert(0, cldeps);
   }
 
-  for (std::vector<std::string>::iterator i = compileCmds.begin();
-       i != compileCmds.end(); ++i) {
-    *i = launcher + *i;
-    rulePlaceholderExpander->ExpandRuleVariables(this->GetLocalGenerator(), *i,
+  for (std::string& i : compileCmds) {
+    i = launcher + i;
+    rulePlaceholderExpander->ExpandRuleVariables(this->GetLocalGenerator(), i,
                                                  vars);
   }
 
@@ -702,10 +698,8 @@ void cmNinjaTargetGenerator::WriteObjectBuildStatements()
   std::string config = this->Makefile->GetSafeDefinition("CMAKE_BUILD_TYPE");
   std::vector<cmSourceFile const*> customCommands;
   this->GeneratorTarget->GetCustomCommands(customCommands, config);
-  for (std::vector<cmSourceFile const*>::const_iterator si =
-         customCommands.begin();
-       si != customCommands.end(); ++si) {
-    cmCustomCommand const* cc = (*si)->GetCustomCommand();
+  for (cmSourceFile const* sf : customCommands) {
+    cmCustomCommand const* cc = sf->GetCustomCommand();
     this->GetLocalGenerator()->AddCustomCommandTarget(
       cc, this->GetGeneratorTarget());
     // Record the custom commands for this target. The container is used
@@ -722,10 +716,8 @@ void cmNinjaTargetGenerator::WriteObjectBuildStatements()
     extraSources, this->MacOSXContentGenerator);
   std::vector<cmSourceFile const*> externalObjects;
   this->GeneratorTarget->GetExternalObjects(externalObjects, config);
-  for (std::vector<cmSourceFile const*>::const_iterator si =
-         externalObjects.begin();
-       si != externalObjects.end(); ++si) {
-    this->Objects.push_back(this->GetSourceFilePath(*si));
+  for (cmSourceFile const* sf : externalObjects) {
+    this->Objects.push_back(this->GetSourceFilePath(sf));
   }
 
   cmNinjaDeps orderOnlyDeps;
@@ -737,10 +729,7 @@ void cmNinjaTargetGenerator::WriteObjectBuildStatements()
                        this->ExtraFiles.end());
 
   // Add order-only dependencies on custom command outputs.
-  for (std::vector<cmCustomCommand const*>::const_iterator cci =
-         this->CustomCommands.begin();
-       cci != this->CustomCommands.end(); ++cci) {
-    cmCustomCommand const* cc = *cci;
+  for (cmCustomCommand const* cc : this->CustomCommands) {
     cmCustomCommandGenerator ccg(*cc, this->GetConfigName(),
                                  this->GetLocalGenerator());
     const std::vector<std::string>& ccoutputs = ccg.GetOutputs();
@@ -765,10 +754,8 @@ void cmNinjaTargetGenerator::WriteObjectBuildStatements()
   }
   std::vector<cmSourceFile const*> objectSources;
   this->GeneratorTarget->GetObjectSources(objectSources, config);
-  for (std::vector<cmSourceFile const*>::const_iterator si =
-         objectSources.begin();
-       si != objectSources.end(); ++si) {
-    this->WriteObjectBuildStatement(*si);
+  for (cmSourceFile const* sf : objectSources) {
+    this->WriteObjectBuildStatement(sf);
   }
 
   if (!this->DDIFiles.empty()) {
@@ -845,10 +832,9 @@ void cmNinjaTargetGenerator::WriteObjectBuildStatement(
   if (const char* objectDeps = source->GetProperty("OBJECT_DEPENDS")) {
     std::vector<std::string> depList;
     cmSystemTools::ExpandListArgument(objectDeps, depList);
-    for (std::vector<std::string>::iterator odi = depList.begin();
-         odi != depList.end(); ++odi) {
-      if (cmSystemTools::FileIsFullPath(*odi)) {
-        *odi = cmSystemTools::CollapseFullPath(*odi);
+    for (std::string& odi : depList) {
+      if (cmSystemTools::FileIsFullPath(odi)) {
+        odi = cmSystemTools::CollapseFullPath(odi);
       }
     }
     std::transform(depList.begin(), depList.end(),
@@ -896,9 +882,15 @@ void cmNinjaTargetGenerator::WriteObjectBuildStatement(
     // The actual compilation will now use the preprocessed source.
     explicitDeps.push_back(ppFileName);
 
-    // Preprocessing and compilation use the same flags.
+    // Preprocessing and compilation generally use the same flags.
     ppVars["FLAGS"] = vars["FLAGS"];
 
+    // In case compilation requires flags that are incompatible with
+    // preprocessing, include them here.
+    std::string const postFlag =
+      this->Makefile->GetSafeDefinition("CMAKE_Fortran_POSTPROCESS_FLAG");
+    this->LocalGenerator->AppendFlags(vars["FLAGS"], postFlag);
+
     // Move preprocessor definitions to the preprocessor build statement.
     std::swap(ppVars["DEFINES"], vars["DEFINES"]);
 
@@ -1010,19 +1002,17 @@ void cmNinjaTargetGenerator::WriteTargetDependInfo(std::string const& lang)
   std::vector<std::string> includes;
   this->LocalGenerator->GetIncludeDirectories(includes, this->GeneratorTarget,
                                               lang, this->GetConfigName());
-  for (std::vector<std::string>::iterator i = includes.begin();
-       i != includes.end(); ++i) {
+  for (std::string const& i : includes) {
     // Convert the include directories the same way we do for -I flags.
     // See upstream ninja issue 1251.
-    tdi_include_dirs.append(this->ConvertToNinjaPath(*i));
+    tdi_include_dirs.append(this->ConvertToNinjaPath(i));
   }
 
   Json::Value& tdi_linked_target_dirs = tdi["linked-target-dirs"] =
     Json::arrayValue;
   std::vector<std::string> linked = this->GetLinkedTargetDirectories();
-  for (std::vector<std::string>::iterator i = linked.begin();
-       i != linked.end(); ++i) {
-    tdi_linked_target_dirs.append(*i);
+  for (std::string const& l : linked) {
+    tdi_linked_target_dirs.append(l);
   }
 
   std::string const tdin = this->GetTargetDependInfoPath(lang);
@@ -1087,13 +1077,12 @@ void cmNinjaTargetGenerator::ExportObjectCompileCommand(
     cmSystemTools::ExpandListArgument(compileCmd, compileCmds);
   }
 
-  CM_AUTO_PTR<cmRulePlaceholderExpander> rulePlaceholderExpander(
+  std::unique_ptr<cmRulePlaceholderExpander> rulePlaceholderExpander(
     this->GetLocalGenerator()->CreateRulePlaceholderExpander());
 
-  for (std::vector<std::string>::iterator i = compileCmds.begin();
-       i != compileCmds.end(); ++i) {
+  for (std::string& i : compileCmds) {
     // no launcher for CMAKE_EXPORT_COMPILE_COMMANDS
-    rulePlaceholderExpander->ExpandRuleVariables(this->GetLocalGenerator(), *i,
+    rulePlaceholderExpander->ExpandRuleVariables(this->GetLocalGenerator(), i,
                                                  compileObjectVars);
   }
 
diff --git a/Source/cmNinjaTargetGenerator.h b/Source/cmNinjaTargetGenerator.h
index 5eb7a9a49..770a99d7f 100644
--- a/Source/cmNinjaTargetGenerator.h
+++ b/Source/cmNinjaTargetGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmNinjaTargetGenerator_h
 #define cmNinjaTargetGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmCommonTargetGenerator.h"
 #include "cmGlobalNinjaGenerator.h"
@@ -31,7 +31,7 @@ public:
   cmNinjaTargetGenerator(cmGeneratorTarget* target);
 
   /// Destructor.
-  ~cmNinjaTargetGenerator() CM_OVERRIDE;
+  ~cmNinjaTargetGenerator() override;
 
   virtual void Generate() = 0;
 
@@ -77,8 +77,7 @@ protected:
   std::string ComputeFlagsForObject(cmSourceFile const* source,
                                     const std::string& language);
 
-  void AddIncludeFlags(std::string& flags,
-                       std::string const& lang) CM_OVERRIDE;
+  void AddIncludeFlags(std::string& flags, std::string const& lang) override;
 
   std::string ComputeDefines(cmSourceFile const* source,
                              const std::string& language);
@@ -142,8 +141,7 @@ protected:
     {
     }
 
-    void operator()(cmSourceFile const& source,
-                    const char* pkgloc) CM_OVERRIDE;
+    void operator()(cmSourceFile const& source, const char* pkgloc) override;
 
   private:
     cmNinjaTargetGenerator* Generator;
diff --git a/Source/cmNinjaTypes.h b/Source/cmNinjaTypes.h
index ec435d9dd..9e962f135 100644
--- a/Source/cmNinjaTypes.h
+++ b/Source/cmNinjaTypes.h
@@ -6,6 +6,7 @@
 #include "cmConfigure.h" // IWYU pragma: keep
 
 #include <map>
+#include <set>
 #include <string>
 #include <vector>
 
@@ -16,6 +17,7 @@ enum cmNinjaTargetDepends
 };
 
 typedef std::vector<std::string> cmNinjaDeps;
+typedef std::set<std::string> cmNinjaOuts;
 typedef std::map<std::string, std::string> cmNinjaVars;
 
 #endif // ! cmNinjaTypes_h
diff --git a/Source/cmNinjaUtilityTargetGenerator.cxx b/Source/cmNinjaUtilityTargetGenerator.cxx
index 500ff4a45..7adeb8e2b 100644
--- a/Source/cmNinjaUtilityTargetGenerator.cxx
+++ b/Source/cmNinjaUtilityTargetGenerator.cxx
@@ -51,17 +51,15 @@ void cmNinjaUtilityTargetGenerator::Generate()
   bool uses_terminal = false;
 
   for (unsigned i = 0; i != 2; ++i) {
-    for (std::vector<cmCustomCommand>::const_iterator ci =
-           cmdLists[i]->begin();
-         ci != cmdLists[i]->end(); ++ci) {
-      cmCustomCommandGenerator ccg(*ci, this->GetConfigName(),
+    for (cmCustomCommand const& ci : *cmdLists[i]) {
+      cmCustomCommandGenerator ccg(ci, this->GetConfigName(),
                                    this->GetLocalGenerator());
       this->GetLocalGenerator()->AppendCustomCommandDeps(ccg, deps);
       this->GetLocalGenerator()->AppendCustomCommandLines(ccg, commands);
       std::vector<std::string> const& ccByproducts = ccg.GetByproducts();
       std::transform(ccByproducts.begin(), ccByproducts.end(),
                      std::back_inserter(util_outputs), MapToNinjaPath());
-      if (ci->GetUsesTerminal()) {
+      if (ci.GetUsesTerminal()) {
         uses_terminal = true;
       }
     }
@@ -71,9 +69,8 @@ void cmNinjaUtilityTargetGenerator::Generate()
   std::string config =
     this->GetMakefile()->GetSafeDefinition("CMAKE_BUILD_TYPE");
   this->GetGeneratorTarget()->GetSourceFiles(sources, config);
-  for (std::vector<cmSourceFile*>::const_iterator source = sources.begin();
-       source != sources.end(); ++source) {
-    if (cmCustomCommand* cc = (*source)->GetCustomCommand()) {
+  for (cmSourceFile const* source : sources) {
+    if (cmCustomCommand const* cc = source->GetCustomCommand()) {
       cmCustomCommandGenerator ccg(*cc, this->GetConfigName(),
                                    this->GetLocalGenerator());
       this->GetLocalGenerator()->AddCustomCommandTarget(
@@ -132,10 +129,8 @@ void cmNinjaUtilityTargetGenerator::Generate()
       return;
     }
 
-    for (cmNinjaDeps::const_iterator oi = util_outputs.begin(),
-                                     oe = util_outputs.end();
-         oi != oe; ++oi) {
-      this->GetGlobalGenerator()->SeenCustomCommandOutput(*oi);
+    for (std::string const& util_output : util_outputs) {
+      this->GetGlobalGenerator()->SeenCustomCommandOutput(util_output);
     }
 
     this->GetGlobalGenerator()->WriteCustomCommandBuild(
diff --git a/Source/cmNinjaUtilityTargetGenerator.h b/Source/cmNinjaUtilityTargetGenerator.h
index 9256e369c..01cc4595f 100644
--- a/Source/cmNinjaUtilityTargetGenerator.h
+++ b/Source/cmNinjaUtilityTargetGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmNinjaUtilityTargetGenerator_h
 #define cmNinjaUtilityTargetGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmNinjaTargetGenerator.h"
 
@@ -13,9 +13,9 @@ class cmNinjaUtilityTargetGenerator : public cmNinjaTargetGenerator
 {
 public:
   cmNinjaUtilityTargetGenerator(cmGeneratorTarget* target);
-  ~cmNinjaUtilityTargetGenerator() CM_OVERRIDE;
+  ~cmNinjaUtilityTargetGenerator() override;
 
-  void Generate() CM_OVERRIDE;
+  void Generate() override;
 };
 
 #endif // ! cmNinjaUtilityTargetGenerator_h
diff --git a/Source/cmOSXBundleGenerator.cxx b/Source/cmOSXBundleGenerator.cxx
index beddc6e6d..c85c82d84 100644
--- a/Source/cmOSXBundleGenerator.cxx
+++ b/Source/cmOSXBundleGenerator.cxx
@@ -2,8 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmOSXBundleGenerator.h"
 
-#include "cmConfigure.h"
-
 #include "cmGeneratorTarget.h"
 #include "cmLocalGenerator.h"
 #include "cmMakefile.h"
@@ -21,7 +19,7 @@ cmOSXBundleGenerator::cmOSXBundleGenerator(cmGeneratorTarget* target,
   , Makefile(target->Target->GetMakefile())
   , LocalGenerator(target->GetLocalGenerator())
   , ConfigName(configName)
-  , MacContentFolders(CM_NULLPTR)
+  , MacContentFolders(nullptr)
 {
   if (this->MustSkip()) {
     return;
@@ -197,12 +195,11 @@ void cmOSXBundleGenerator::GenerateMacOSXContentStatements(
     return;
   }
 
-  for (std::vector<cmSourceFile const*>::const_iterator si = sources.begin();
-       si != sources.end(); ++si) {
+  for (cmSourceFile const* source : sources) {
     cmGeneratorTarget::SourceFileFlags tsFlags =
-      this->GT->GetTargetSourceFileFlags(*si);
+      this->GT->GetTargetSourceFileFlags(source);
     if (tsFlags.Type != cmGeneratorTarget::SourceFileTypeNormal) {
-      (*generator)(**si, tsFlags.MacFolder);
+      (*generator)(*source, tsFlags.MacFolder);
     }
   }
 }
diff --git a/Source/cmOptionCommand.h b/Source/cmOptionCommand.h
index 634e3a824..34e0e6f01 100644
--- a/Source/cmOptionCommand.h
+++ b/Source/cmOptionCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmOptionCommand_h
 #define cmOptionCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmOptionCommand; }
+  cmCommand* Clone() override { return new cmOptionCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmOrderDirectories.cxx b/Source/cmOrderDirectories.cxx
index 333e3134c..27ad71037 100644
--- a/Source/cmOrderDirectories.cxx
+++ b/Source/cmOrderDirectories.cxx
@@ -75,9 +75,8 @@ public:
   void FindImplicitConflicts(std::ostringstream& w)
   {
     bool first = true;
-    for (unsigned int i = 0; i < this->OD->OriginalDirectories.size(); ++i) {
+    for (std::string const& dir : this->OD->OriginalDirectories) {
       // Check if this directory conflicts with the entry.
-      std::string const& dir = this->OD->OriginalDirectories[i];
       if (dir != this->Directory &&
           cmSystemTools::GetRealPath(dir) !=
             cmSystemTools::GetRealPath(this->Directory) &&
@@ -150,7 +149,7 @@ public:
     }
   }
 
-  void Report(std::ostream& e) CM_OVERRIDE
+  void Report(std::ostream& e) override
   {
     e << "runtime library [";
     if (this->SOName.empty()) {
@@ -161,7 +160,7 @@ public:
     e << "]";
   }
 
-  bool FindConflict(std::string const& dir) CM_OVERRIDE;
+  bool FindConflict(std::string const& dir) override;
 
 private:
   // The soname of the shared library if it is known.
@@ -205,12 +204,12 @@ public:
   {
   }
 
-  void Report(std::ostream& e) CM_OVERRIDE
+  void Report(std::ostream& e) override
   {
     e << "link library [" << this->FileName << "]";
   }
 
-  bool FindConflict(std::string const& dir) CM_OVERRIDE;
+  bool FindConflict(std::string const& dir) override;
 };
 
 bool cmOrderDirectoriesConstraintLibrary::FindConflict(std::string const& dir)
@@ -226,12 +225,10 @@ bool cmOrderDirectoriesConstraintLibrary::FindConflict(std::string const& dir)
       this->OD->RemoveLibraryExtension.find(this->FileName)) {
     std::string lib = this->OD->RemoveLibraryExtension.match(1);
     std::string ext = this->OD->RemoveLibraryExtension.match(2);
-    for (std::vector<std::string>::iterator i =
-           this->OD->LinkExtensions.begin();
-         i != this->OD->LinkExtensions.end(); ++i) {
-      if (*i != ext) {
+    for (std::string const& LinkExtension : this->OD->LinkExtensions) {
+      if (LinkExtension != ext) {
         std::string fname = lib;
-        fname += *i;
+        fname += LinkExtension;
         if (this->FileMayConflict(dir, fname)) {
           return true;
         }
@@ -346,9 +343,8 @@ void cmOrderDirectories::SetImplicitDirectories(
   std::set<std::string> const& implicitDirs)
 {
   this->ImplicitDirectories.clear();
-  for (std::set<std::string>::const_iterator i = implicitDirs.begin();
-       i != implicitDirs.end(); ++i) {
-    this->ImplicitDirectories.insert(this->GetRealPath(*i));
+  for (std::string const& implicitDir : implicitDirs) {
+    this->ImplicitDirectories.insert(this->GetRealPath(implicitDir));
   }
 }
 
@@ -375,8 +371,8 @@ void cmOrderDirectories::CollectOriginalDirectories()
   this->AddOriginalDirectories(this->UserDirectories);
 
   // Add directories containing constraints.
-  for (unsigned int i = 0; i < this->ConstraintEntries.size(); ++i) {
-    this->ConstraintEntries[i]->AddDirectory();
+  for (cmOrderDirectoriesConstraint* entry : this->ConstraintEntries) {
+    entry->AddDirectory();
   }
 
   // Add language runtime directories last.
@@ -400,20 +396,19 @@ int cmOrderDirectories::AddOriginalDirectory(std::string const& dir)
 void cmOrderDirectories::AddOriginalDirectories(
   std::vector<std::string> const& dirs)
 {
-  for (std::vector<std::string>::const_iterator di = dirs.begin();
-       di != dirs.end(); ++di) {
+  for (std::string const& dir : dirs) {
     // We never explicitly specify implicit link directories.
-    if (this->IsImplicitDirectory(*di)) {
+    if (this->IsImplicitDirectory(dir)) {
       continue;
     }
 
     // Skip the empty string.
-    if (di->empty()) {
+    if (dir.empty()) {
       continue;
     }
 
     // Add this directory.
-    this->AddOriginalDirectory(*di);
+    this->AddOriginalDirectory(dir);
   }
 }
 
@@ -442,16 +437,15 @@ void cmOrderDirectories::FindConflicts()
   }
 
   // Clean up the conflict graph representation.
-  for (std::vector<ConflictList>::iterator i = this->ConflictGraph.begin();
-       i != this->ConflictGraph.end(); ++i) {
+  for (ConflictList& cl : this->ConflictGraph) {
     // Sort the outgoing edges for each graph node so that the
     // original order will be preserved as much as possible.
-    std::sort(i->begin(), i->end());
+    std::sort(cl.begin(), cl.end());
 
     // Make the edge list unique so cycle detection will be reliable.
     ConflictList::iterator last =
-      std::unique(i->begin(), i->end(), cmOrderDirectoriesCompare());
-    i->erase(last, i->end());
+      std::unique(cl.begin(), cl.end(), cmOrderDirectoriesCompare());
+    cl.erase(last, cl.end());
   }
 
   // Check items in implicit link directories.
@@ -463,12 +457,12 @@ void cmOrderDirectories::FindImplicitConflicts()
   // Check for items in implicit link directories that have conflicts
   // in the explicit directories.
   std::ostringstream conflicts;
-  for (unsigned int i = 0; i < this->ImplicitDirEntries.size(); ++i) {
-    this->ImplicitDirEntries[i]->FindImplicitConflicts(conflicts);
+  for (cmOrderDirectoriesConstraint* entry : this->ImplicitDirEntries) {
+    entry->FindImplicitConflicts(conflicts);
   }
 
   // Skip warning if there were no conflicts.
-  std::string text = conflicts.str();
+  std::string const text = conflicts.str();
   if (text.empty()) {
     return;
   }
@@ -515,8 +509,8 @@ void cmOrderDirectories::VisitDirectory(unsigned int i)
 
   // Visit the neighbors of the node first.
   ConflictList const& clist = this->ConflictGraph[i];
-  for (ConflictList::const_iterator j = clist.begin(); j != clist.end(); ++j) {
-    this->VisitDirectory(j->first);
+  for (ConflictPair const& j : clist) {
+    this->VisitDirectory(j.first);
   }
 
   // Now that all directories required to come before this one have
@@ -542,10 +536,9 @@ void cmOrderDirectories::DiagnoseCycle()
   for (unsigned int i = 0; i < this->ConflictGraph.size(); ++i) {
     ConflictList const& clist = this->ConflictGraph[i];
     e << "  dir " << i << " is [" << this->OriginalDirectories[i] << "]\n";
-    for (ConflictList::const_iterator j = clist.begin(); j != clist.end();
-         ++j) {
-      e << "    dir " << j->first << " must precede it due to ";
-      this->ConstraintEntries[j->second]->Report(e);
+    for (ConflictPair const& j : clist) {
+      e << "    dir " << j.first << " must precede it due to ";
+      this->ConstraintEntries[j.second]->Report(e);
       e << "\n";
     }
   }
diff --git a/Source/cmOrderDirectories.h b/Source/cmOrderDirectories.h
index 3a0637afb..5916f7ab4 100644
--- a/Source/cmOrderDirectories.h
+++ b/Source/cmOrderDirectories.h
@@ -3,7 +3,7 @@
 #ifndef cmOrderDirectories_h
 #define cmOrderDirectories_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmsys/RegularExpression.hxx"
 #include <map>
@@ -26,7 +26,7 @@ public:
                      const char* purpose);
   ~cmOrderDirectories();
   void AddRuntimeLibrary(std::string const& fullPath,
-                         const char* soname = CM_NULLPTR);
+                         const char* soname = nullptr);
   void AddLinkLibrary(std::string const& fullPath);
   void AddUserDirectories(std::vector<std::string> const& extra);
   void AddLanguageDirectories(std::vector<std::string> const& dirs);
diff --git a/Source/cmOutputConverter.cxx b/Source/cmOutputConverter.cxx
index 14c986dd8..dac656912 100644
--- a/Source/cmOutputConverter.cxx
+++ b/Source/cmOutputConverter.cxx
@@ -285,12 +285,11 @@ cmOutputConverter::FortranFormat cmOutputConverter::GetFortranFormat(
   if (value && *value) {
     std::vector<std::string> fmt;
     cmSystemTools::ExpandListArgument(value, fmt);
-    for (std::vector<std::string>::iterator fi = fmt.begin(); fi != fmt.end();
-         ++fi) {
-      if (*fi == "FIXED") {
+    for (std::string const& fi : fmt) {
+      if (fi == "FIXED") {
         format = FortranFormatFixed;
       }
-      if (*fi == "FREE") {
+      if (fi == "FREE") {
         format = FortranFormatFree;
       }
     }
@@ -389,7 +388,7 @@ int cmOutputConverter::Shell__CharNeedsQuotes(char c, int flags)
 
 int cmOutputConverter::Shell__CharIsMakeVariableName(char c)
 {
-  return c && (c == '_' || isalpha(((int)c)));
+  return c && (c == '_' || isalpha((static_cast<int>(c))));
 }
 
 const char* cmOutputConverter::Shell__SkipMakeVariables(const char* c)
diff --git a/Source/cmOutputRequiredFilesCommand.cxx b/Source/cmOutputRequiredFilesCommand.cxx
index 2339d6876..cde90375f 100644
--- a/Source/cmOutputRequiredFilesCommand.cxx
+++ b/Source/cmOutputRequiredFilesCommand.cxx
@@ -13,7 +13,6 @@
 #include "cmSourceFile.h"
 #include "cmSystemTools.h"
 #include "cmTarget.h"
-#include "cm_unordered_map.hxx"
 
 class cmExecutionStatus;
 
@@ -31,7 +30,7 @@ public:
    */
   cmDependInformation()
     : DependDone(false)
-    , SourceFile(CM_NULLPTR)
+    , SourceFile(nullptr)
   {
   }
 
@@ -114,8 +113,9 @@ public:
     std::set<std::string> uniqueIncludes;
     std::vector<std::string> orderedAndUniqueIncludes;
     cmTargets& targets = this->Makefile->GetTargets();
-    for (cmTargets::iterator l = targets.begin(); l != targets.end(); ++l) {
-      const char* incDirProp = l->second.GetProperty("INCLUDE_DIRECTORIES");
+    for (auto const& target : targets) {
+      const char* incDirProp =
+        target.second.GetProperty("INCLUDE_DIRECTORIES");
       if (!incDirProp) {
         continue;
       }
@@ -126,9 +126,7 @@ public:
       std::vector<std::string> includes;
       cmSystemTools::ExpandListArgument(incDirs, includes);
 
-      for (std::vector<std::string>::const_iterator j = includes.begin();
-           j != includes.end(); ++j) {
-        std::string path = *j;
+      for (std::string& path : includes) {
         this->Makefile->ExpandVariablesInString(path);
         if (uniqueIncludes.insert(path).second) {
           orderedAndUniqueIncludes.push_back(path);
@@ -136,10 +134,8 @@ public:
       }
     }
 
-    for (std::vector<std::string>::const_iterator it =
-           orderedAndUniqueIncludes.begin();
-         it != orderedAndUniqueIncludes.end(); ++it) {
-      this->AddSearchPath(*it);
+    for (std::string const& inc : orderedAndUniqueIncludes) {
+      this->AddSearchPath(inc);
     }
   }
 
@@ -157,7 +153,7 @@ public:
    */
   const cmDependInformation* FindDependencies(const char* file)
   {
-    cmDependInformation* info = this->GetDependInformation(file, CM_NULLPTR);
+    cmDependInformation* info = this->GetDependInformation(file, nullptr);
     this->GenerateDependInformation(info);
     return info;
   }
@@ -202,7 +198,7 @@ protected:
             message += includeFile;
             message += " for file ";
             message += info->FullPath;
-            cmSystemTools::Error(message.c_str(), CM_NULLPTR);
+            cmSystemTools::Error(message.c_str(), nullptr);
           }
           continue;
         }
@@ -220,10 +216,7 @@ protected:
           if (cmSystemTools::FileExists(cxxFile.c_str())) {
             found = true;
           }
-          for (std::vector<std::string>::iterator i =
-                 this->IncludeDirectories.begin();
-               i != this->IncludeDirectories.end(); ++i) {
-            std::string path = *i;
+          for (std::string path : this->IncludeDirectories) {
             path = path + "/";
             path = path + cxxFile;
             if (cmSystemTools::FileExists(path.c_str())) {
@@ -235,10 +228,7 @@ protected:
             if (cmSystemTools::FileExists(cxxFile.c_str())) {
               found = true;
             }
-            for (std::vector<std::string>::iterator i =
-                   this->IncludeDirectories.begin();
-                 i != this->IncludeDirectories.end(); ++i) {
-              std::string path = *i;
+            for (std::string path : this->IncludeDirectories) {
               path = path + "/";
               path = path + cxxFile;
               if (cmSystemTools::FileExists(path.c_str())) {
@@ -251,10 +241,7 @@ protected:
             if (cmSystemTools::FileExists(cxxFile.c_str())) {
               found = true;
             }
-            for (std::vector<std::string>::iterator i =
-                   this->IncludeDirectories.begin();
-                 i != this->IncludeDirectories.end(); ++i) {
-              std::string path = *i;
+            for (std::string path : this->IncludeDirectories) {
               path = path + "/";
               path = path + cxxFile;
               if (cmSystemTools::FileExists(path.c_str())) {
@@ -267,10 +254,7 @@ protected:
             if (cmSystemTools::FileExists(cxxFile.c_str())) {
               found = true;
             }
-            for (std::vector<std::string>::iterator i =
-                   this->IncludeDirectories.begin();
-                 i != this->IncludeDirectories.end(); ++i) {
-              std::string path = *i;
+            for (std::string path : this->IncludeDirectories) {
               path = path + "/";
               path = path + cxxFile;
               if (cmSystemTools::FileExists(path.c_str())) {
@@ -328,7 +312,7 @@ protected:
 
     // See if the cmSourceFile for it has any files specified as
     // dependency hints.
-    if (info->SourceFile != CM_NULLPTR) {
+    if (info->SourceFile != nullptr) {
 
       // Get the cmSourceFile corresponding to this.
       const cmSourceFile& cFile = *(info->SourceFile);
@@ -337,10 +321,8 @@ protected:
       if (!cFile.GetDepends().empty()) {
         // Dependency hints have been given.  Use them to begin the
         // recursion.
-        for (std::vector<std::string>::const_iterator file =
-               cFile.GetDepends().begin();
-             file != cFile.GetDepends().end(); ++file) {
-          this->AddDependency(info, file->c_str());
+        for (std::string const& file : cFile.GetDepends()) {
+          this->AddDependency(info, file.c_str());
         }
 
         // Found dependency information.  We are done.
@@ -357,10 +339,7 @@ protected:
           found = true;
         } else {
           // try to guess which include path to use
-          for (std::vector<std::string>::iterator t =
-                 this->IncludeDirectories.begin();
-               t != this->IncludeDirectories.end(); ++t) {
-            std::string incpath = *t;
+          for (std::string incpath : this->IncludeDirectories) {
             if (!incpath.empty() && incpath[incpath.size() - 1] != '/') {
               incpath = incpath + "/";
             }
@@ -383,7 +362,7 @@ protected:
       } else {
         // Destroy the name of the file so that it won't be output as a
         // dependency.
-        info->FullPath = "";
+        info->FullPath.clear();
       }
     }
   }
@@ -442,10 +421,7 @@ protected:
       return fp;
     }
 
-    for (std::vector<std::string>::iterator i =
-           this->IncludeDirectories.begin();
-         i != this->IncludeDirectories.end(); ++i) {
-      std::string path = *i;
+    for (std::string path : this->IncludeDirectories) {
       if (!path.empty() && path[path.size() - 1] != '/') {
         path = path + "/";
       }
@@ -532,19 +508,17 @@ void cmOutputRequiredFilesCommand::ListDependencies(
   // add info to the visited set
   visited->insert(info);
   // now recurse with info's dependencies
-  for (cmDependInformation::DependencySetType::const_iterator d =
-         info->DependencySet.begin();
-       d != info->DependencySet.end(); ++d) {
-    if (visited->find(*d) == visited->end()) {
-      if (info->FullPath != "") {
-        std::string tmp = (*d)->FullPath;
+  for (cmDependInformation* d : info->DependencySet) {
+    if (visited->find(d) == visited->end()) {
+      if (!info->FullPath.empty()) {
+        std::string tmp = d->FullPath;
         std::string::size_type pos = tmp.rfind('.');
         if (pos != std::string::npos && (tmp.substr(pos) != ".h")) {
           tmp = tmp.substr(0, pos);
-          fprintf(fout, "%s\n", (*d)->FullPath.c_str());
+          fprintf(fout, "%s\n", d->FullPath.c_str());
         }
       }
-      this->ListDependencies(*d, fout, visited);
+      this->ListDependencies(d, fout, visited);
     }
   }
 }
diff --git a/Source/cmOutputRequiredFilesCommand.h b/Source/cmOutputRequiredFilesCommand.h
index d20bfbdc1..09e622b41 100644
--- a/Source/cmOutputRequiredFilesCommand.h
+++ b/Source/cmOutputRequiredFilesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmOutputRequiredFilesCommand_h
 #define cmOutputRequiredFilesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <set>
 #include <stdio.h>
@@ -18,9 +18,9 @@ class cmExecutionStatus;
 class cmOutputRequiredFilesCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmOutputRequiredFilesCommand; }
+  cmCommand* Clone() override { return new cmOutputRequiredFilesCommand; }
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   void ListDependencies(cmDependInformation const* info, FILE* fout,
                         std::set<cmDependInformation const*>* visited);
diff --git a/Source/cmParseArgumentsCommand.cxx b/Source/cmParseArgumentsCommand.cxx
index d75ee8e86..0922e6e24 100644
--- a/Source/cmParseArgumentsCommand.cxx
+++ b/Source/cmParseArgumentsCommand.cxx
@@ -5,7 +5,6 @@
 #include <map>
 #include <set>
 #include <sstream>
-#include <stddef.h>
 #include <utility>
 
 #include "cmAlgorithms.h"
@@ -19,11 +18,11 @@ static std::string escape_arg(const std::string& arg)
 {
   // replace ";" with "\;" so output argument lists will split correctly
   std::string escapedArg;
-  for (size_t i = 0; i < arg.size(); ++i) {
-    if (arg[i] == ';') {
+  for (char i : arg) {
+    if (i == ';') {
       escapedArg += '\\';
     }
-    escapedArg += arg[i];
+    escapedArg += i;
   }
   return escapedArg;
 }
@@ -70,7 +69,7 @@ bool cmParseArgumentsCommand::InitialPass(std::vector<std::string> const& args,
   // options, single values and multi values
   typedef std::map<std::string, bool> options_map;
   typedef std::map<std::string, std::string> single_map;
-  typedef std::map<std::string, std::vector<std::string> > multi_map;
+  typedef std::map<std::string, std::vector<std::string>> multi_map;
   options_map options;
   single_map single;
   multi_map multi;
@@ -85,37 +84,31 @@ bool cmParseArgumentsCommand::InitialPass(std::vector<std::string> const& args,
   // the second argument is a (cmake) list of options without argument
   std::vector<std::string> list;
   cmSystemTools::ExpandListArgument(*argIter++, list);
-  for (std::vector<std::string>::const_iterator iter = list.begin(),
-                                                end = list.end();
-       iter != end; ++iter) {
-    if (!used_keywords.insert(*iter).second) {
-      this->GetMakefile()->IssueMessage(cmake::WARNING, dup_warning + *iter);
+  for (std::string const& iter : list) {
+    if (!used_keywords.insert(iter).second) {
+      this->GetMakefile()->IssueMessage(cmake::WARNING, dup_warning + iter);
     }
-    options[*iter]; // default initialize
+    options[iter]; // default initialize
   }
 
   // the third argument is a (cmake) list of single argument options
   list.clear();
   cmSystemTools::ExpandListArgument(*argIter++, list);
-  for (std::vector<std::string>::const_iterator iter = list.begin(),
-                                                end = list.end();
-       iter != end; ++iter) {
-    if (!used_keywords.insert(*iter).second) {
-      this->GetMakefile()->IssueMessage(cmake::WARNING, dup_warning + *iter);
+  for (std::string const& iter : list) {
+    if (!used_keywords.insert(iter).second) {
+      this->GetMakefile()->IssueMessage(cmake::WARNING, dup_warning + iter);
     }
-    single[*iter]; // default initialize
+    single[iter]; // default initialize
   }
 
   // the fourth argument is a (cmake) list of multi argument options
   list.clear();
   cmSystemTools::ExpandListArgument(*argIter++, list);
-  for (std::vector<std::string>::const_iterator iter = list.begin(),
-                                                end = list.end();
-       iter != end; ++iter) {
-    if (!used_keywords.insert(*iter).second) {
-      this->GetMakefile()->IssueMessage(cmake::WARNING, dup_warning + *iter);
+  for (std::string const& iter : list) {
+    if (!used_keywords.insert(iter).second) {
+      this->GetMakefile()->IssueMessage(cmake::WARNING, dup_warning + iter);
     }
-    multi[*iter]; // default initialize
+    multi[iter]; // default initialize
   }
 
   enum insideValues
@@ -160,46 +153,45 @@ bool cmParseArgumentsCommand::InitialPass(std::vector<std::string> const& args,
   }
 
   // iterate over the arguments list and fill in the values where applicable
-  for (argIter = list.begin(), argEnd = list.end(); argIter != argEnd;
-       ++argIter) {
-    const options_map::iterator optIter = options.find(*argIter);
+  for (std::string const& arg : list) {
+    const options_map::iterator optIter = options.find(arg);
     if (optIter != options.end()) {
       insideValues = NONE;
       optIter->second = true;
       continue;
     }
 
-    const single_map::iterator singleIter = single.find(*argIter);
+    const single_map::iterator singleIter = single.find(arg);
     if (singleIter != single.end()) {
       insideValues = SINGLE;
-      currentArgName = *argIter;
+      currentArgName = arg;
       continue;
     }
 
-    const multi_map::iterator multiIter = multi.find(*argIter);
+    const multi_map::iterator multiIter = multi.find(arg);
     if (multiIter != multi.end()) {
       insideValues = MULTI;
-      currentArgName = *argIter;
+      currentArgName = arg;
       continue;
     }
 
     switch (insideValues) {
       case SINGLE:
-        single[currentArgName] = *argIter;
+        single[currentArgName] = arg;
         insideValues = NONE;
         break;
       case MULTI:
         if (parseFromArgV) {
-          multi[currentArgName].push_back(escape_arg(*argIter));
+          multi[currentArgName].push_back(escape_arg(arg));
         } else {
-          multi[currentArgName].push_back(*argIter);
+          multi[currentArgName].push_back(arg);
         }
         break;
       default:
         if (parseFromArgV) {
-          unparsed.push_back(escape_arg(*argIter));
+          unparsed.push_back(escape_arg(arg));
         } else {
-          unparsed.push_back(*argIter);
+          unparsed.push_back(arg);
         }
         break;
     }
@@ -208,28 +200,24 @@ bool cmParseArgumentsCommand::InitialPass(std::vector<std::string> const& args,
   // now iterate over the collected values and update their definition
   // within the current scope. undefine if necessary.
 
-  for (options_map::const_iterator iter = options.begin(), end = options.end();
-       iter != end; ++iter) {
-    this->Makefile->AddDefinition(prefix + iter->first,
-                                  iter->second ? "TRUE" : "FALSE");
+  for (auto const& iter : options) {
+    this->Makefile->AddDefinition(prefix + iter.first,
+                                  iter.second ? "TRUE" : "FALSE");
   }
-  for (single_map::const_iterator iter = single.begin(), end = single.end();
-       iter != end; ++iter) {
-    if (!iter->second.empty()) {
-      this->Makefile->AddDefinition(prefix + iter->first,
-                                    iter->second.c_str());
+  for (auto const& iter : single) {
+    if (!iter.second.empty()) {
+      this->Makefile->AddDefinition(prefix + iter.first, iter.second.c_str());
     } else {
-      this->Makefile->RemoveDefinition(prefix + iter->first);
+      this->Makefile->RemoveDefinition(prefix + iter.first);
     }
   }
 
-  for (multi_map::const_iterator iter = multi.begin(), end = multi.end();
-       iter != end; ++iter) {
-    if (!iter->second.empty()) {
+  for (auto const& iter : multi) {
+    if (!iter.second.empty()) {
       this->Makefile->AddDefinition(
-        prefix + iter->first, cmJoin(cmMakeRange(iter->second), ";").c_str());
+        prefix + iter.first, cmJoin(cmMakeRange(iter.second), ";").c_str());
     } else {
-      this->Makefile->RemoveDefinition(prefix + iter->first);
+      this->Makefile->RemoveDefinition(prefix + iter.first);
     }
   }
 
diff --git a/Source/cmParseArgumentsCommand.h b/Source/cmParseArgumentsCommand.h
index 359fb85b9..b8ba61d21 100644
--- a/Source/cmParseArgumentsCommand.h
+++ b/Source/cmParseArgumentsCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmParseArgumentsCommand_h
 #define cmParseArgumentsCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -21,14 +21,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmParseArgumentsCommand; }
+  cmCommand* Clone() override { return new cmParseArgumentsCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmPathLabel.cxx b/Source/cmPathLabel.cxx
index 30ba08151..4793206f9 100644
--- a/Source/cmPathLabel.cxx
+++ b/Source/cmPathLabel.cxx
@@ -2,15 +2,13 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmPathLabel.h"
 
-#include <stddef.h>
-
 cmPathLabel::cmPathLabel(const std::string& label)
   : Label(label)
   , Hash(0)
 {
   // Use a Jenkins one-at-a-time hash with under/over-flow protection
-  for (size_t i = 0; i < this->Label.size(); ++i) {
-    this->Hash += this->Label[i];
+  for (char i : this->Label) {
+    this->Hash += i;
     this->Hash += ((this->Hash & 0x003FFFFF) << 10);
     this->Hash ^= ((this->Hash & 0xFFFFFFC0) >> 6);
   }
diff --git a/Source/cmPipeConnection.cxx b/Source/cmPipeConnection.cxx
new file mode 100644
index 000000000..9e565f60a
--- /dev/null
+++ b/Source/cmPipeConnection.cxx
@@ -0,0 +1,82 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#include "cmPipeConnection.h"
+
+#include "cmServer.h"
+
+cmPipeConnection::cmPipeConnection(const std::string& name,
+                                   cmConnectionBufferStrategy* bufferStrategy)
+  : cmEventBasedConnection(bufferStrategy)
+  , PipeName(name)
+{
+}
+
+void cmPipeConnection::Connect(uv_stream_t* server)
+{
+  if (this->ClientPipe) {
+    // Accept and close all pipes but the first:
+    uv_pipe_t* rejectPipe = new uv_pipe_t();
+
+    uv_pipe_init(this->Server->GetLoop(), rejectPipe, 0);
+    uv_accept(server, reinterpret_cast<uv_stream_t*>(rejectPipe));
+    uv_close(reinterpret_cast<uv_handle_t*>(rejectPipe),
+             &on_close_delete<uv_pipe_t>);
+    return;
+  }
+
+  this->ClientPipe = new uv_pipe_t();
+  uv_pipe_init(this->Server->GetLoop(), this->ClientPipe, 0);
+  this->ClientPipe->data = static_cast<cmEventBasedConnection*>(this);
+  auto client = reinterpret_cast<uv_stream_t*>(this->ClientPipe);
+  if (uv_accept(server, client) != 0) {
+    uv_close(reinterpret_cast<uv_handle_t*>(client),
+             &on_close_delete<uv_pipe_t>);
+    this->ClientPipe = nullptr;
+    return;
+  }
+  this->ReadStream = client;
+  this->WriteStream = client;
+
+  uv_read_start(this->ReadStream, on_alloc_buffer, on_read);
+  Server->OnConnected(this);
+}
+
+bool cmPipeConnection::OnServeStart(std::string* errorMessage)
+{
+  this->ServerPipe = new uv_pipe_t();
+  uv_pipe_init(this->Server->GetLoop(), this->ServerPipe, 0);
+  this->ServerPipe->data = static_cast<cmEventBasedConnection*>(this);
+
+  int r;
+  if ((r = uv_pipe_bind(this->ServerPipe, this->PipeName.c_str())) != 0) {
+    *errorMessage = std::string("Internal Error with ") + this->PipeName +
+      ": " + uv_err_name(r);
+    return false;
+  }
+  auto serverStream = reinterpret_cast<uv_stream_t*>(this->ServerPipe);
+  if ((r = uv_listen(serverStream, 1, on_new_connection)) != 0) {
+    *errorMessage = std::string("Internal Error listening on ") +
+      this->PipeName + ": " + uv_err_name(r);
+    return false;
+  }
+
+  return cmConnection::OnServeStart(errorMessage);
+}
+
+bool cmPipeConnection::OnConnectionShuttingDown()
+{
+  if (this->ClientPipe) {
+    uv_close(reinterpret_cast<uv_handle_t*>(this->ClientPipe),
+             &on_close_delete<uv_pipe_t>);
+    this->WriteStream->data = nullptr;
+  }
+  uv_close(reinterpret_cast<uv_handle_t*>(this->ServerPipe),
+           &on_close_delete<uv_pipe_t>);
+
+  this->ClientPipe = nullptr;
+  this->ServerPipe = nullptr;
+  this->WriteStream = nullptr;
+  this->ReadStream = nullptr;
+
+  return cmEventBasedConnection::OnConnectionShuttingDown();
+}
diff --git a/Source/cmPipeConnection.h b/Source/cmPipeConnection.h
new file mode 100644
index 000000000..7b8984296
--- /dev/null
+++ b/Source/cmPipeConnection.h
@@ -0,0 +1,28 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#pragma once
+
+#include "cmConfigure.h" // IWYU pragma: keep
+
+#include <string>
+
+#include "cmConnection.h"
+#include "cm_uv.h"
+
+class cmPipeConnection : public cmEventBasedConnection
+{
+public:
+  cmPipeConnection(const std::string& name,
+                   cmConnectionBufferStrategy* bufferStrategy = nullptr);
+
+  bool OnServeStart(std::string* pString) override;
+
+  bool OnConnectionShuttingDown() override;
+
+  void Connect(uv_stream_t* server) override;
+
+private:
+  const std::string PipeName;
+  uv_pipe_t* ServerPipe = nullptr;
+  uv_pipe_t* ClientPipe = nullptr;
+};
diff --git a/Source/cmPolicies.cxx b/Source/cmPolicies.cxx
index da3edd427..e7d1b7218 100644
--- a/Source/cmPolicies.cxx
+++ b/Source/cmPolicies.cxx
@@ -8,7 +8,6 @@
 #include "cmVersion.h"
 #include "cmake.h"
 
-#include "cmConfigure.h"
 #include <assert.h>
 #include <ctype.h>
 #include <sstream>
@@ -62,9 +61,9 @@ static const char* idToString(cmPolicies::PolicyID id)
     CM_FOR_EACH_POLICY_ID(POLICY_CASE)
 #undef POLICY_CASE
     case cmPolicies::CMPCOUNT:
-      return CM_NULLPTR;
+      return nullptr;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 static const char* idToVersion(cmPolicies::PolicyID id)
@@ -76,9 +75,9 @@ static const char* idToVersion(cmPolicies::PolicyID id)
     CM_FOR_EACH_POLICY_ID_VERSION(POLICY_CASE)
 #undef POLICY_CASE
     case cmPolicies::CMPCOUNT:
-      return CM_NULLPTR;
+      return nullptr;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 static bool isPolicyNewerThan(cmPolicies::PolicyID id, unsigned int majorV,
@@ -108,9 +107,9 @@ const char* idToShortDescription(cmPolicies::PolicyID id)
     CM_FOR_EACH_POLICY_ID_DOC(POLICY_CASE)
 #undef POLICY_CASE
     case cmPolicies::CMPCOUNT:
-      return CM_NULLPTR;
+      return nullptr;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 static void DiagnoseAncientPolicies(
@@ -121,9 +120,8 @@ static void DiagnoseAncientPolicies(
   e << "The project requests behavior compatible with CMake version \""
     << majorVer << "." << minorVer << "." << patchVer
     << "\", which requires the OLD behavior for some policies:\n";
-  for (std::vector<cmPolicies::PolicyID>::const_iterator i = ancient.begin();
-       i != ancient.end(); ++i) {
-    e << "  " << idToString(*i) << ": " << idToShortDescription(*i) << "\n";
+  for (cmPolicies::PolicyID i : ancient) {
+    e << "  " << idToString(i) << ": " << idToShortDescription(i) << "\n";
   }
   e << "However, this version of CMake no longer supports the OLD "
     << "behavior for these policies.  "
@@ -142,7 +140,7 @@ static bool GetPolicyDefault(cmMakefile* mf, std::string const& policy,
     *defaultSetting = cmPolicies::NEW;
   } else if (defaultValue == "OLD") {
     *defaultSetting = cmPolicies::OLD;
-  } else if (defaultValue == "") {
+  } else if (defaultValue.empty()) {
     *defaultSetting = cmPolicies::WARN;
   } else {
     std::ostringstream e;
diff --git a/Source/cmPolicies.h b/Source/cmPolicies.h
index 69cbc1844..6c33e2b0f 100644
--- a/Source/cmPolicies.h
+++ b/Source/cmPolicies.h
@@ -126,7 +126,7 @@ class cmMakefile;
          3, 0, 0, cmPolicies::WARN)                                           \
   SELECT(POLICY, CMP0040,                                                     \
          "The target in the TARGET signature of add_custom_command() must "   \
-         "exist.",                                                            \
+         "exist and must be defined in the current directory.",               \
          3, 0, 0, cmPolicies::WARN)                                           \
   SELECT(POLICY, CMP0041,                                                     \
          "Error on relative include with generator expression.", 3, 0, 0,     \
@@ -206,7 +206,12 @@ class cmMakefile;
          cmPolicies::WARN)                                                    \
   SELECT(POLICY, CMP0069,                                                     \
          "INTERPROCEDURAL_OPTIMIZATION is enforced when enabled.", 3, 9, 0,   \
-         cmPolicies::WARN)
+         cmPolicies::WARN)                                                    \
+  SELECT(POLICY, CMP0070,                                                     \
+         "Define file(GENERATE) behavior for relative paths.", 3, 10, 0,      \
+         cmPolicies::WARN)                                                    \
+  SELECT(POLICY, CMP0071, "Let AUTOMOC and AUTOUIC process GENERATED files.", \
+         3, 10, 0, cmPolicies::WARN)
 
 #define CM_SELECT_ID(F, A1, A2, A3, A4, A5, A6) F(A1)
 #define CM_FOR_EACH_POLICY_ID(POLICY)                                         \
diff --git a/Source/cmProcessTools.cxx b/Source/cmProcessTools.cxx
index de7b06126..7ab1fa3fc 100644
--- a/Source/cmProcessTools.cxx
+++ b/Source/cmProcessTools.cxx
@@ -10,22 +10,22 @@ void cmProcessTools::RunProcess(struct cmsysProcess_s* cp, OutputParser* out,
                                 OutputParser* err, Encoding encoding)
 {
   cmsysProcess_Execute(cp);
-  char* data = CM_NULLPTR;
+  char* data = nullptr;
   int length = 0;
   int p;
   cmProcessOutput processOutput(encoding);
   std::string strdata;
   while ((out || err) &&
-         (p = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR), p)) {
+         (p = cmsysProcess_WaitForData(cp, &data, &length, nullptr), p)) {
     if (out && p == cmsysProcess_Pipe_STDOUT) {
       processOutput.DecodeText(data, length, strdata, 1);
       if (!out->Process(strdata.c_str(), int(strdata.size()))) {
-        out = CM_NULLPTR;
+        out = nullptr;
       }
     } else if (err && p == cmsysProcess_Pipe_STDERR) {
       processOutput.DecodeText(data, length, strdata, 2);
       if (!err->Process(strdata.c_str(), int(strdata.size()))) {
-        err = CM_NULLPTR;
+        err = nullptr;
       }
     }
   }
@@ -38,15 +38,15 @@ void cmProcessTools::RunProcess(struct cmsysProcess_s* cp, OutputParser* out,
   if (err) {
     processOutput.DecodeText(std::string(), strdata, 2);
     if (!strdata.empty()) {
-      out->Process(strdata.c_str(), int(strdata.size()));
+      err->Process(strdata.c_str(), int(strdata.size()));
     }
   }
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
 }
 
 cmProcessTools::LineParser::LineParser(char sep, bool ignoreCR)
-  : Log(CM_NULLPTR)
-  , Prefix(CM_NULLPTR)
+  : Log(nullptr)
+  , Prefix(nullptr)
   , Separator(sep)
   , LineEnd('\0')
   , IgnoreCR(ignoreCR)
@@ -73,11 +73,11 @@ bool cmProcessTools::LineParser::ProcessChunk(const char* first, int length)
 
       // Hand this line to the subclass implementation.
       if (!this->ProcessLine()) {
-        this->Line = "";
+        this->Line.clear();
         return false;
       }
 
-      this->Line = "";
+      this->Line.clear();
     } else if (*c != '\r' || !this->IgnoreCR) {
       // Append this character to the line under construction.
       this->Line.append(1, *c);
diff --git a/Source/cmProcessTools.h b/Source/cmProcessTools.h
index e7d9a10eb..23fa74e85 100644
--- a/Source/cmProcessTools.h
+++ b/Source/cmProcessTools.h
@@ -3,7 +3,7 @@
 #ifndef cmProcessTools_h
 #define cmProcessTools_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 #include "cmProcessOutput.h"
 
 #include <iosfwd>
@@ -59,7 +59,7 @@ public:
     char Separator;
     char LineEnd;
     bool IgnoreCR;
-    bool ProcessChunk(const char* data, int length) CM_OVERRIDE;
+    bool ProcessChunk(const char* data, int length) override;
 
     /** Implement in a subclass to process one line of input.  It
         should return true only if it is interested in more data.  */
@@ -70,18 +70,18 @@ public:
   class OutputLogger : public LineParser
   {
   public:
-    OutputLogger(std::ostream& log, const char* prefix = CM_NULLPTR)
+    OutputLogger(std::ostream& log, const char* prefix = nullptr)
     {
       this->SetLog(&log, prefix);
     }
 
   private:
-    bool ProcessLine() CM_OVERRIDE { return true; }
+    bool ProcessLine() override { return true; }
   };
 
   /** Run a process and send output to given parsers.  */
   static void RunProcess(struct cmsysProcess_s* cp, OutputParser* out,
-                         OutputParser* err = CM_NULLPTR,
+                         OutputParser* err = nullptr,
                          Encoding encoding = cmProcessOutput::Auto);
 };
 
diff --git a/Source/cmProjectCommand.cxx b/Source/cmProjectCommand.cxx
index d72c7909c..fea8a9dde 100644
--- a/Source/cmProjectCommand.cxx
+++ b/Source/cmProjectCommand.cxx
@@ -195,15 +195,14 @@ bool cmProjectCommand::InitialPass(std::vector<std::string> const& args,
     vv.push_back(projectName + "_VERSION_PATCH");
     vv.push_back(projectName + "_VERSION_TWEAK");
     std::string vw;
-    for (std::vector<std::string>::iterator i = vv.begin(); i != vv.end();
-         ++i) {
-      const char* v = this->Makefile->GetDefinition(*i);
+    for (std::string const& i : vv) {
+      const char* v = this->Makefile->GetDefinition(i);
       if (v && *v) {
         if (cmp0048 == cmPolicies::WARN) {
           vw += "\n  ";
-          vw += *i;
+          vw += i;
         } else {
-          this->Makefile->AddDefinition(*i, "");
+          this->Makefile->AddDefinition(i, "");
         }
       }
     }
diff --git a/Source/cmProjectCommand.h b/Source/cmProjectCommand.h
index 3c579ac9d..80fa235e2 100644
--- a/Source/cmProjectCommand.h
+++ b/Source/cmProjectCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmProjectCommand_h
 #define cmProjectCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -26,14 +26,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmProjectCommand; }
+  cmCommand* Clone() override { return new cmProjectCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmProperty.cxx b/Source/cmProperty.cxx
index 222afb497..27f0ecd71 100644
--- a/Source/cmProperty.cxx
+++ b/Source/cmProperty.cxx
@@ -2,8 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmProperty.h"
 
-#include "cmConfigure.h"
-
 void cmProperty::Set(const char* value)
 {
   this->Value = value;
@@ -24,5 +22,5 @@ const char* cmProperty::GetValue() const
   if (this->ValueHasBeenSet) {
     return this->Value.c_str();
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
diff --git a/Source/cmPropertyMap.cxx b/Source/cmPropertyMap.cxx
index 1e089d1c8..3f6d7c8a9 100644
--- a/Source/cmPropertyMap.cxx
+++ b/Source/cmPropertyMap.cxx
@@ -2,7 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmPropertyMap.h"
 
-#include "cmConfigure.h"
 #include <algorithm>
 #include <assert.h>
 #include <utility>
@@ -22,9 +21,8 @@ cmProperty* cmPropertyMap::GetOrCreateProperty(const std::string& name)
 std::vector<std::string> cmPropertyMap::GetPropertyList() const
 {
   std::vector<std::string> keyList;
-  for (cmPropertyMap::const_iterator i = this->begin(), e = this->end();
-       i != e; ++i) {
-    keyList.push_back(i->first);
+  for (auto const& i : *this) {
+    keyList.push_back(i.first);
   }
   std::sort(keyList.begin(), keyList.end());
   return keyList;
@@ -59,7 +57,7 @@ const char* cmPropertyMap::GetPropertyValue(const std::string& name) const
 
   cmPropertyMap::const_iterator it = this->find(name);
   if (it == this->end()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return it->second.GetValue();
 }
diff --git a/Source/cmQTWrapCPPCommand.cxx b/Source/cmQTWrapCPPCommand.cxx
index de9e54505..ae1fdfae2 100644
--- a/Source/cmQTWrapCPPCommand.cxx
+++ b/Source/cmQTWrapCPPCommand.cxx
@@ -78,7 +78,7 @@ bool cmQTWrapCPPCommand::InitialPass(std::vector<std::string> const& args,
       depends.push_back(hname);
 
       std::string no_main_dependency;
-      const char* no_working_dir = CM_NULLPTR;
+      const char* no_working_dir = nullptr;
       this->Makefile->AddCustomCommandToOutput(
         newName, depends, no_main_dependency, commandLines, "Qt Wrapped File",
         no_working_dir);
diff --git a/Source/cmQTWrapCPPCommand.h b/Source/cmQTWrapCPPCommand.h
index ad1ccf38d..c1dcd545e 100644
--- a/Source/cmQTWrapCPPCommand.h
+++ b/Source/cmQTWrapCPPCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmQTWrapCPPCommand_h
 #define cmQTWrapCPPCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmQTWrapCPPCommand; }
+  cmCommand* Clone() override { return new cmQTWrapCPPCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmQTWrapUICommand.cxx b/Source/cmQTWrapUICommand.cxx
index d3c663176..3d586d6bd 100644
--- a/Source/cmQTWrapUICommand.cxx
+++ b/Source/cmQTWrapUICommand.cxx
@@ -109,8 +109,8 @@ bool cmQTWrapUICommand::InitialPass(std::vector<std::string> const& args,
       std::vector<std::string> depends;
       depends.push_back(uiName);
       std::string no_main_dependency;
-      const char* no_comment = CM_NULLPTR;
-      const char* no_working_dir = CM_NULLPTR;
+      const char* no_comment = nullptr;
+      const char* no_working_dir = nullptr;
       this->Makefile->AddCustomCommandToOutput(
         hName, depends, no_main_dependency, hCommandLines, no_comment,
         no_working_dir);
diff --git a/Source/cmQTWrapUICommand.h b/Source/cmQTWrapUICommand.h
index ac7ab01c7..15cab406f 100644
--- a/Source/cmQTWrapUICommand.h
+++ b/Source/cmQTWrapUICommand.h
@@ -3,7 +3,7 @@
 #ifndef cmQTWrapUICommand_h
 #define cmQTWrapUICommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmQTWrapUICommand; }
+  cmCommand* Clone() override { return new cmQTWrapUICommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmQtAutoGen.cxx b/Source/cmQtAutoGen.cxx
new file mode 100644
index 000000000..5e89978b9
--- /dev/null
+++ b/Source/cmQtAutoGen.cxx
@@ -0,0 +1,374 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#include "cmQtAutoGen.h"
+#include "cmAlgorithms.h"
+#include "cmProcessOutput.h"
+#include "cmSystemTools.h"
+
+#include "cmsys/FStream.hxx"
+#include "cmsys/RegularExpression.hxx"
+
+#include <algorithm>
+#include <sstream>
+#include <stddef.h>
+
+// - Static variables
+
+std::string const genNameGen = "AutoGen";
+std::string const genNameMoc = "AutoMoc";
+std::string const genNameUic = "AutoUic";
+std::string const genNameRcc = "AutoRcc";
+
+std::string const mcNameSingle = "SINGLE";
+std::string const mcNameWrap = "WRAP";
+std::string const mcNameFull = "FULL";
+
+// - Static functions
+
+/// @brief Merges newOpts into baseOpts
+/// @arg valueOpts list of options that accept a value
+void MergeOptions(std::vector<std::string>& baseOpts,
+                  std::vector<std::string> const& newOpts,
+                  std::vector<std::string> const& valueOpts, bool isQt5)
+{
+  typedef std::vector<std::string>::iterator Iter;
+  typedef std::vector<std::string>::const_iterator CIter;
+  if (newOpts.empty()) {
+    return;
+  }
+  if (baseOpts.empty()) {
+    baseOpts = newOpts;
+    return;
+  }
+
+  std::vector<std::string> extraOpts;
+  for (CIter fit = newOpts.begin(), fitEnd = newOpts.end(); fit != fitEnd;
+       ++fit) {
+    std::string const& newOpt = *fit;
+    Iter existIt = std::find(baseOpts.begin(), baseOpts.end(), newOpt);
+    if (existIt != baseOpts.end()) {
+      if (newOpt.size() >= 2) {
+        // Acquire the option name
+        std::string optName;
+        {
+          auto oit = newOpt.begin();
+          if (*oit == '-') {
+            ++oit;
+            if (isQt5 && (*oit == '-')) {
+              ++oit;
+            }
+            optName.assign(oit, newOpt.end());
+          }
+        }
+        // Test if this is a value option and change the existing value
+        if (!optName.empty() && (std::find(valueOpts.begin(), valueOpts.end(),
+                                           optName) != valueOpts.end())) {
+          const Iter existItNext(existIt + 1);
+          const CIter fitNext(fit + 1);
+          if ((existItNext != baseOpts.end()) && (fitNext != fitEnd)) {
+            *existItNext = *fitNext;
+            ++fit;
+          }
+        }
+      }
+    } else {
+      extraOpts.push_back(newOpt);
+    }
+  }
+  // Append options
+  baseOpts.insert(baseOpts.end(), extraOpts.begin(), extraOpts.end());
+}
+
+static std::string utilStripCR(std::string const& line)
+{
+  // Strip CR characters rcc may have printed (possibly more than one!).
+  std::string::size_type cr = line.find('\r');
+  if (cr != std::string::npos) {
+    return line.substr(0, cr);
+  }
+  return line;
+}
+
+/// @brief Reads the resource files list from from a .qrc file - Qt4 version
+/// @return True if the .qrc file was successfully parsed
+static bool RccListInputsQt4(std::string const& fileName,
+                             std::vector<std::string>& files,
+                             std::string* errorMessage)
+{
+  bool allGood = true;
+  // Read qrc file content into string
+  std::string qrcContents;
+  {
+    cmsys::ifstream ifs(fileName.c_str());
+    if (ifs) {
+      std::ostringstream osst;
+      osst << ifs.rdbuf();
+      qrcContents = osst.str();
+    } else {
+      if (errorMessage != nullptr) {
+        std::ostringstream ost;
+        ost << "rcc file not readable:\n"
+            << "  " << cmQtAutoGen::Quoted(fileName) << "\n";
+        *errorMessage = ost.str();
+      }
+      allGood = false;
+    }
+  }
+  if (allGood) {
+    // qrc file directory
+    std::string qrcDir(cmSystemTools::GetFilenamePath(fileName));
+    if (!qrcDir.empty()) {
+      qrcDir += '/';
+    }
+
+    cmsys::RegularExpression fileMatchRegex("(<file[^<]+)");
+    cmsys::RegularExpression fileReplaceRegex("(^<file[^>]*>)");
+
+    size_t offset = 0;
+    while (fileMatchRegex.find(qrcContents.c_str() + offset)) {
+      std::string qrcEntry = fileMatchRegex.match(1);
+      offset += qrcEntry.size();
+      {
+        fileReplaceRegex.find(qrcEntry);
+        std::string tag = fileReplaceRegex.match(1);
+        qrcEntry = qrcEntry.substr(tag.size());
+      }
+      if (!cmSystemTools::FileIsFullPath(qrcEntry.c_str())) {
+        qrcEntry = qrcDir + qrcEntry;
+      }
+      files.push_back(qrcEntry);
+    }
+  }
+  return allGood;
+}
+
+/// @brief Reads the resource files list from from a .qrc file - Qt5 version
+/// @return True if the .qrc file was successfully parsed
+static bool RccListInputsQt5(std::string const& rccCommand,
+                             std::string const& fileName,
+                             std::vector<std::string>& files,
+                             std::string* errorMessage)
+{
+  if (rccCommand.empty()) {
+    cmSystemTools::Error("rcc executable not available");
+    return false;
+  }
+
+  // Read rcc features
+  bool hasDashDashList = false;
+  {
+    std::vector<std::string> command;
+    command.push_back(rccCommand);
+    command.push_back("--help");
+    std::string rccStdOut;
+    std::string rccStdErr;
+    int retVal = 0;
+    bool result = cmSystemTools::RunSingleCommand(
+      command, &rccStdOut, &rccStdErr, &retVal, nullptr,
+      cmSystemTools::OUTPUT_NONE, 0.0, cmProcessOutput::Auto);
+    if (result && retVal == 0 &&
+        rccStdOut.find("--list") != std::string::npos) {
+      hasDashDashList = true;
+    }
+  }
+
+  std::string const fileDir = cmSystemTools::GetFilenamePath(fileName);
+  std::string const fileNameName = cmSystemTools::GetFilenameName(fileName);
+
+  // Run rcc list command
+  bool result = false;
+  int retVal = 0;
+  std::string rccStdOut;
+  std::string rccStdErr;
+  {
+    std::vector<std::string> command;
+    command.push_back(rccCommand);
+    command.push_back(hasDashDashList ? "--list" : "-list");
+    command.push_back(fileNameName);
+    result = cmSystemTools::RunSingleCommand(
+      command, &rccStdOut, &rccStdErr, &retVal, fileDir.c_str(),
+      cmSystemTools::OUTPUT_NONE, 0.0, cmProcessOutput::Auto);
+  }
+  if (!result || retVal) {
+    if (errorMessage != nullptr) {
+      std::ostringstream ost;
+      ost << "rcc list process failed for\n  " << cmQtAutoGen::Quoted(fileName)
+          << "\n"
+          << rccStdOut << "\n"
+          << rccStdErr << "\n";
+      *errorMessage = ost.str();
+    }
+    return false;
+  }
+
+  // Parse rcc std output
+  {
+    std::istringstream ostr(rccStdOut);
+    std::string oline;
+    while (std::getline(ostr, oline)) {
+      oline = utilStripCR(oline);
+      if (!oline.empty()) {
+        files.push_back(oline);
+      }
+    }
+  }
+  // Parse rcc error output
+  {
+    std::istringstream estr(rccStdErr);
+    std::string eline;
+    while (std::getline(estr, eline)) {
+      eline = utilStripCR(eline);
+      if (cmHasLiteralPrefix(eline, "RCC: Error in")) {
+        static std::string searchString = "Cannot find file '";
+
+        std::string::size_type pos = eline.find(searchString);
+        if (pos == std::string::npos) {
+          if (errorMessage != nullptr) {
+            std::ostringstream ost;
+            ost << "rcc lists unparsable output:\n"
+                << cmQtAutoGen::Quoted(eline) << "\n";
+            *errorMessage = ost.str();
+          }
+          return false;
+        }
+        pos += searchString.length();
+        std::string::size_type sz = eline.size() - pos - 1;
+        files.push_back(eline.substr(pos, sz));
+      }
+    }
+  }
+
+  // Convert relative paths to absolute paths
+  for (std::string& resFile : files) {
+    resFile = cmSystemTools::CollapseCombinedPath(fileDir, resFile);
+  }
+
+  return true;
+}
+
+// - Class definitions
+
+std::string const cmQtAutoGen::listSep = "@LSEP@";
+
+std::string const& cmQtAutoGen::GeneratorName(Generator type)
+{
+  switch (type) {
+    case Generator::GEN:
+      return genNameGen;
+    case Generator::MOC:
+      return genNameMoc;
+    case Generator::UIC:
+      return genNameUic;
+    case Generator::RCC:
+      return genNameRcc;
+  }
+  return genNameGen;
+}
+
+std::string cmQtAutoGen::GeneratorNameUpper(Generator genType)
+{
+  return cmSystemTools::UpperCase(cmQtAutoGen::GeneratorName(genType));
+}
+
+std::string const& cmQtAutoGen::MultiConfigName(MultiConfig config)
+{
+  switch (config) {
+    case MultiConfig::SINGLE:
+      return mcNameSingle;
+    case MultiConfig::WRAP:
+      return mcNameWrap;
+    case MultiConfig::FULL:
+      return mcNameFull;
+  }
+  return mcNameWrap;
+}
+
+cmQtAutoGen::MultiConfig cmQtAutoGen::MultiConfigType(std::string const& name)
+{
+  if (name == mcNameSingle) {
+    return MultiConfig::SINGLE;
+  }
+  if (name == mcNameFull) {
+    return MultiConfig::FULL;
+  }
+  return MultiConfig::WRAP;
+}
+
+std::string cmQtAutoGen::Quoted(std::string const& text)
+{
+  static const char* rep[18] = { "\\", "\\\\", "\"", "\\\"", "\a", "\\a",
+                                 "\b", "\\b",  "\f", "\\f",  "\n", "\\n",
+                                 "\r", "\\r",  "\t", "\\t",  "\v", "\\v" };
+
+  std::string res = text;
+  for (const char* const* it = cmArrayBegin(rep); it != cmArrayEnd(rep);
+       it += 2) {
+    cmSystemTools::ReplaceString(res, *it, *(it + 1));
+  }
+  res = '"' + res;
+  res += '"';
+  return res;
+}
+
+std::string cmQtAutoGen::AppendFilenameSuffix(std::string const& filename,
+                                              std::string const& suffix)
+{
+  std::string res;
+  auto pos = filename.rfind('.');
+  if (pos != std::string::npos) {
+    const auto it_dot = filename.begin() + pos;
+    res.assign(filename.begin(), it_dot);
+    res.append(suffix);
+    res.append(it_dot, filename.end());
+  } else {
+    res = filename;
+    res.append(suffix);
+  }
+  return res;
+}
+
+void cmQtAutoGen::UicMergeOptions(std::vector<std::string>& baseOpts,
+                                  std::vector<std::string> const& newOpts,
+                                  bool isQt5)
+{
+  static std::vector<std::string> const valueOpts = {
+    "tr",      "translate", "postfix", "generator",
+    "include", // Since Qt 5.3
+    "g"
+  };
+  MergeOptions(baseOpts, newOpts, valueOpts, isQt5);
+}
+
+void cmQtAutoGen::RccMergeOptions(std::vector<std::string>& baseOpts,
+                                  std::vector<std::string> const& newOpts,
+                                  bool isQt5)
+{
+  static std::vector<std::string> const valueOpts = { "name", "root",
+                                                      "compress",
+                                                      "threshold" };
+  MergeOptions(baseOpts, newOpts, valueOpts, isQt5);
+}
+
+bool cmQtAutoGen::RccListInputs(std::string const& qtMajorVersion,
+                                std::string const& rccCommand,
+                                std::string const& fileName,
+                                std::vector<std::string>& files,
+                                std::string* errorMessage)
+{
+  bool allGood = false;
+  if (cmSystemTools::FileExists(fileName.c_str())) {
+    if (qtMajorVersion == "4") {
+      allGood = RccListInputsQt4(fileName, files, errorMessage);
+    } else {
+      allGood = RccListInputsQt5(rccCommand, fileName, files, errorMessage);
+    }
+  } else {
+    if (errorMessage != nullptr) {
+      std::ostringstream ost;
+      ost << "rcc file does not exist:\n"
+          << "  " << cmQtAutoGen::Quoted(fileName) << "\n";
+      *errorMessage = ost.str();
+    }
+  }
+  return allGood;
+}
diff --git a/Source/cmQtAutoGen.h b/Source/cmQtAutoGen.h
new file mode 100644
index 000000000..acc092fb3
--- /dev/null
+++ b/Source/cmQtAutoGen.h
@@ -0,0 +1,72 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#ifndef cmQtAutoGen_h
+#define cmQtAutoGen_h
+
+#include "cmConfigure.h" // IWYU pragma: keep
+
+#include <string>
+#include <vector>
+
+/** \class cmQtAutoGen
+ * \brief Class used as namespace for QtAutogen related types  and functions
+ */
+class cmQtAutoGen
+{
+public:
+  static std::string const listSep;
+
+  enum Generator
+  {
+    GEN, // General
+    MOC,
+    UIC,
+    RCC
+  };
+
+  enum MultiConfig
+  {
+    SINGLE, // Single configuration
+    WRAP,   // Multi configuration using wrapper files
+    FULL    // Full multi configuration using per config sources
+  };
+
+public:
+  /// @brief Returns the generator name
+  static std::string const& GeneratorName(Generator genType);
+  /// @brief Returns the generator name in upper case
+  static std::string GeneratorNameUpper(Generator genType);
+
+  /// @brief Returns the multi configuration name string
+  static std::string const& MultiConfigName(MultiConfig config);
+  /// @brief Returns the multi configuration type
+  static MultiConfig MultiConfigType(std::string const& name);
+
+  /// @brief Returns a the string escaped and enclosed in quotes
+  static std::string Quoted(std::string const& text);
+
+  /// @brief Appends the suffix to the filename before the last dot
+  static std::string AppendFilenameSuffix(std::string const& filename,
+                                          std::string const& suffix);
+
+  /// @brief Merges newOpts into baseOpts
+  static void UicMergeOptions(std::vector<std::string>& baseOpts,
+                              std::vector<std::string> const& newOpts,
+                              bool isQt5);
+
+  /// @brief Merges newOpts into baseOpts
+  static void RccMergeOptions(std::vector<std::string>& baseOpts,
+                              std::vector<std::string> const& newOpts,
+                              bool isQt5);
+
+  /// @brief Reads the resource files list from from a .qrc file
+  /// @arg fileName Must be the absolute path of the .qrc file
+  /// @return True if the rcc file was successfully parsed
+  static bool RccListInputs(std::string const& qtMajorVersion,
+                            std::string const& rccCommand,
+                            std::string const& fileName,
+                            std::vector<std::string>& files,
+                            std::string* errorMessage = nullptr);
+};
+
+#endif
diff --git a/Source/cmQtAutoGenDigest.h b/Source/cmQtAutoGenDigest.h
new file mode 100644
index 000000000..677c39792
--- /dev/null
+++ b/Source/cmQtAutoGenDigest.h
@@ -0,0 +1,64 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#ifndef cmQtAutoGenDigest_h
+#define cmQtAutoGenDigest_h
+
+#include "cmConfigure.h" // IWYU pragma: keep
+
+#include <memory>
+#include <string>
+#include <vector>
+
+class cmGeneratorTarget;
+
+class cmQtAutoGenDigestQrc
+{
+public:
+  cmQtAutoGenDigestQrc()
+    : Generated(false)
+    , Unique(false)
+  {
+  }
+
+public:
+  std::string QrcFile;
+  std::string QrcName;
+  std::string PathChecksum;
+  std::string RccFile;
+  bool Generated;
+  bool Unique;
+  std::vector<std::string> Options;
+  std::vector<std::string> Resources;
+};
+
+/** \class cmQtAutoGenDigest
+ * \brief Filtered set of QtAutogen variables for a specific target
+ */
+class cmQtAutoGenDigest
+{
+public:
+  cmQtAutoGenDigest(cmGeneratorTarget* target)
+    : Target(target)
+    , MocEnabled(false)
+    , UicEnabled(false)
+    , RccEnabled(false)
+  {
+  }
+
+public:
+  cmGeneratorTarget* Target;
+  std::string QtVersionMajor;
+  std::string QtVersionMinor;
+  bool MocEnabled;
+  bool UicEnabled;
+  bool RccEnabled;
+  std::vector<std::string> Headers;
+  std::vector<std::string> Sources;
+  std::vector<cmQtAutoGenDigestQrc> Qrcs;
+};
+
+// Utility types
+typedef std::unique_ptr<cmQtAutoGenDigest> cmQtAutoGenDigestUP;
+typedef std::vector<cmQtAutoGenDigestUP> cmQtAutoGenDigestUPV;
+
+#endif
diff --git a/Source/cmQtAutoGeneratorCommon.cxx b/Source/cmQtAutoGeneratorCommon.cxx
deleted file mode 100644
index 3e1b58caa..000000000
--- a/Source/cmQtAutoGeneratorCommon.cxx
+++ /dev/null
@@ -1,216 +0,0 @@
-/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
-   file Copyright.txt or https://cmake.org/licensing for details.  */
-#include "cmQtAutoGeneratorCommon.h"
-#include "cmAlgorithms.h"
-#include "cmSystemTools.h"
-
-#include "cmsys/FStream.hxx"
-#include "cmsys/RegularExpression.hxx"
-
-#include <sstream>
-#include <stddef.h>
-
-// - Static functions
-
-static std::string utilStripCR(std::string const& line)
-{
-  // Strip CR characters rcc may have printed (possibly more than one!).
-  std::string::size_type cr = line.find('\r');
-  if (cr != std::string::npos) {
-    return line.substr(0, cr);
-  }
-  return line;
-}
-
-/// @brief Reads the resource files list from from a .qrc file - Qt4 version
-/// @return True if the .qrc file was successfully parsed
-static bool RccListInputsQt4(const std::string& fileName,
-                             std::vector<std::string>& files,
-                             std::string* errorMessage)
-{
-  bool allGood = true;
-  // Read qrc file content into string
-  std::string qrcContents;
-  {
-    cmsys::ifstream ifs(fileName.c_str());
-    if (ifs) {
-      std::ostringstream osst;
-      osst << ifs.rdbuf();
-      qrcContents = osst.str();
-    } else {
-      if (errorMessage != CM_NULLPTR) {
-        std::ostringstream ost;
-        ost << "AutoRcc: Error: Rcc file not readable:\n"
-            << cmQtAutoGeneratorCommon::Quoted(fileName) << "\n";
-        *errorMessage = ost.str();
-      }
-      allGood = false;
-    }
-  }
-  if (allGood) {
-    // qrc file directory
-    std::string qrcDir(cmsys::SystemTools::GetFilenamePath(fileName));
-    if (!qrcDir.empty()) {
-      qrcDir += '/';
-    }
-
-    cmsys::RegularExpression fileMatchRegex("(<file[^<]+)");
-    cmsys::RegularExpression fileReplaceRegex("(^<file[^>]*>)");
-
-    size_t offset = 0;
-    while (fileMatchRegex.find(qrcContents.c_str() + offset)) {
-      std::string qrcEntry = fileMatchRegex.match(1);
-      offset += qrcEntry.size();
-      {
-        fileReplaceRegex.find(qrcEntry);
-        std::string tag = fileReplaceRegex.match(1);
-        qrcEntry = qrcEntry.substr(tag.size());
-      }
-      if (!cmSystemTools::FileIsFullPath(qrcEntry.c_str())) {
-        qrcEntry = qrcDir + qrcEntry;
-      }
-      files.push_back(qrcEntry);
-    }
-  }
-  return allGood;
-}
-
-/// @brief Reads the resource files list from from a .qrc file - Qt5 version
-/// @return True if the .qrc file was successfully parsed
-static bool RccListInputsQt5(const std::string& rccCommand,
-                             const std::string& fileName,
-                             std::vector<std::string>& files,
-                             std::string* errorMessage)
-{
-  if (rccCommand.empty()) {
-    cmSystemTools::Error("AutoRcc: Error: rcc executable not available\n");
-    return false;
-  }
-
-  // Read rcc features
-  bool hasDashDashList = false;
-  {
-    std::vector<std::string> command;
-    command.push_back(rccCommand);
-    command.push_back("--help");
-    std::string rccStdOut;
-    std::string rccStdErr;
-    int retVal = 0;
-    bool result =
-      cmSystemTools::RunSingleCommand(command, &rccStdOut, &rccStdErr, &retVal,
-                                      CM_NULLPTR, cmSystemTools::OUTPUT_NONE);
-    if (result && retVal == 0 &&
-        rccStdOut.find("--list") != std::string::npos) {
-      hasDashDashList = true;
-    }
-  }
-
-  // Run rcc list command
-  bool result = false;
-  int retVal = 0;
-  std::string rccStdOut;
-  std::string rccStdErr;
-  {
-    std::vector<std::string> command;
-    command.push_back(rccCommand);
-    command.push_back(hasDashDashList ? "--list" : "-list");
-    command.push_back(fileName);
-    result =
-      cmSystemTools::RunSingleCommand(command, &rccStdOut, &rccStdErr, &retVal,
-                                      CM_NULLPTR, cmSystemTools::OUTPUT_NONE);
-  }
-  if (!result || retVal) {
-    if (errorMessage != CM_NULLPTR) {
-      std::ostringstream ost;
-      ost << "AutoRcc: Error: Rcc list process for " << fileName
-          << " failed:\n"
-          << rccStdOut << "\n"
-          << rccStdErr << "\n";
-      *errorMessage = ost.str();
-    }
-    return false;
-  }
-
-  // Parse rcc std output
-  {
-    std::istringstream ostr(rccStdOut);
-    std::string oline;
-    while (std::getline(ostr, oline)) {
-      oline = utilStripCR(oline);
-      if (!oline.empty()) {
-        files.push_back(oline);
-      }
-    }
-  }
-  // Parse rcc error output
-  {
-    std::istringstream estr(rccStdErr);
-    std::string eline;
-    while (std::getline(estr, eline)) {
-      eline = utilStripCR(eline);
-      if (cmHasLiteralPrefix(eline, "RCC: Error in")) {
-        static std::string searchString = "Cannot find file '";
-
-        std::string::size_type pos = eline.find(searchString);
-        if (pos == std::string::npos) {
-          if (errorMessage != CM_NULLPTR) {
-            std::ostringstream ost;
-            ost << "AutoRcc: Error: Rcc lists unparsable output:\n"
-                << cmQtAutoGeneratorCommon::Quoted(eline) << "\n";
-            *errorMessage = ost.str();
-          }
-          return false;
-        }
-        pos += searchString.length();
-        std::string::size_type sz = eline.size() - pos - 1;
-        files.push_back(eline.substr(pos, sz));
-      }
-    }
-  }
-
-  return true;
-}
-
-// - Class definitions
-
-const char* cmQtAutoGeneratorCommon::listSep = "@LSEP@";
-
-std::string cmQtAutoGeneratorCommon::Quoted(const std::string& text)
-{
-  static const char* rep[18] = { "\\", "\\\\", "\"", "\\\"", "\a", "\\a",
-                                 "\b", "\\b",  "\f", "\\f",  "\n", "\\n",
-                                 "\r", "\\r",  "\t", "\\t",  "\v", "\\v" };
-
-  std::string res = text;
-  for (const char* const* it = cmArrayBegin(rep); it != cmArrayEnd(rep);
-       it += 2) {
-    cmSystemTools::ReplaceString(res, *it, *(it + 1));
-  }
-  res = '"' + res;
-  res += '"';
-  return res;
-}
-
-bool cmQtAutoGeneratorCommon::RccListInputs(const std::string& qtMajorVersion,
-                                            const std::string& rccCommand,
-                                            const std::string& fileName,
-                                            std::vector<std::string>& files,
-                                            std::string* errorMessage)
-{
-  bool allGood = false;
-  if (cmsys::SystemTools::FileExists(fileName.c_str())) {
-    if (qtMajorVersion == "4") {
-      allGood = RccListInputsQt4(fileName, files, errorMessage);
-    } else {
-      allGood = RccListInputsQt5(rccCommand, fileName, files, errorMessage);
-    }
-  } else {
-    if (errorMessage != CM_NULLPTR) {
-      std::ostringstream ost;
-      ost << "AutoRcc: Error: Rcc file does not exist:\n"
-          << cmQtAutoGeneratorCommon::Quoted(fileName) << "\n";
-      *errorMessage = ost.str();
-    }
-  }
-  return allGood;
-}
diff --git a/Source/cmQtAutoGeneratorCommon.h b/Source/cmQtAutoGeneratorCommon.h
deleted file mode 100644
index a131baf20..000000000
--- a/Source/cmQtAutoGeneratorCommon.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
-   file Copyright.txt or https://cmake.org/licensing for details.  */
-#ifndef cmQtAutoGeneratorCommon_h
-#define cmQtAutoGeneratorCommon_h
-
-#include "cmConfigure.h"
-
-#include <string>
-#include <vector>
-
-class cmQtAutoGeneratorCommon
-{
-  // - Types and statics
-public:
-  static const char* listSep;
-
-  enum GeneratorType
-  {
-    MOC,
-    UIC,
-    RCC
-  };
-
-public:
-  /// @brief Returns a the string escaped and enclosed in quotes
-  ///
-  static std::string Quoted(const std::string& text);
-
-  /// @brief Reads the resource files list from from a .qrc file
-  /// @arg fileName Must be the absolute path of the .qrc file
-  /// @return True if the rcc file was successfully parsed
-  static bool RccListInputs(const std::string& qtMajorVersion,
-                            const std::string& rccCommand,
-                            const std::string& fileName,
-                            std::vector<std::string>& files,
-                            std::string* errorMessage = CM_NULLPTR);
-};
-
-#endif
diff --git a/Source/cmQtAutoGeneratorInitializer.cxx b/Source/cmQtAutoGeneratorInitializer.cxx
index 3e3be54d1..c7550e60e 100644
--- a/Source/cmQtAutoGeneratorInitializer.cxx
+++ b/Source/cmQtAutoGeneratorInitializer.cxx
@@ -1,57 +1,76 @@
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
+#include "cmQtAutoGen.h"
 #include "cmQtAutoGeneratorInitializer.h"
-#include "cmQtAutoGeneratorCommon.h"
 
 #include "cmAlgorithms.h"
+#include "cmCustomCommand.h"
 #include "cmCustomCommandLines.h"
 #include "cmFilePathChecksum.h"
 #include "cmGeneratorTarget.h"
 #include "cmGlobalGenerator.h"
+#include "cmLinkItem.h"
 #include "cmLocalGenerator.h"
 #include "cmMakefile.h"
 #include "cmOutputConverter.h"
+#include "cmPolicies.h"
 #include "cmSourceFile.h"
 #include "cmSourceGroup.h"
 #include "cmState.h"
+#include "cmStateTypes.h"
 #include "cmSystemTools.h"
 #include "cmTarget.h"
 #include "cm_sys_stat.h"
 #include "cmake.h"
-
-#if defined(_WIN32) && !defined(__CYGWIN__)
-#include "cmGlobalVisualStudioGenerator.h"
-#endif
-
-#include "cmConfigure.h"
 #include "cmsys/FStream.hxx"
+
 #include <algorithm>
+#include <array>
+#include <deque>
 #include <map>
 #include <set>
+#include <sstream>
 #include <string>
 #include <utility>
 #include <vector>
 
-static void utilCopyTargetProperty(cmTarget* destinationTarget,
-                                   cmTarget* sourceTarget,
-                                   const std::string& propertyName)
+inline static const char* SafeString(const char* value)
 {
-  const char* propertyValue = sourceTarget->GetProperty(propertyName);
-  if (propertyValue) {
-    destinationTarget->SetProperty(propertyName, propertyValue);
-  }
+  return (value != nullptr) ? value : "";
 }
 
-inline static bool PropertyEnabled(cmSourceFile* sourceFile, const char* key)
+inline static std::string GetSafeProperty(cmGeneratorTarget const* target,
+                                          const char* key)
 {
-  return cmSystemTools::IsOn(sourceFile->GetPropertyForUser(key));
+  return std::string(SafeString(target->GetProperty(key)));
 }
 
-static std::string GetSafeProperty(cmGeneratorTarget const* target,
-                                   const char* key)
+inline static std::string GetSafeProperty(cmSourceFile const* sf,
+                                          const char* key)
 {
-  const char* tmp = target->GetProperty(key);
-  return std::string((tmp != CM_NULLPTR) ? tmp : "");
+  return std::string(SafeString(sf->GetProperty(key)));
+}
+
+static cmQtAutoGen::MultiConfig AutogenMultiConfig(
+  cmGlobalGenerator* globalGen)
+{
+  if (!globalGen->IsMultiConfig()) {
+    return cmQtAutoGen::SINGLE;
+  }
+
+  // FIXME: Xcode does not support per-config sources, yet.
+  //        (EXCLUDED_SOURCE_FILE_NAMES)
+  // if (globalGen->GetName().find("Xcode") != std::string::npos) {
+  //  return cmQtAutoGen::FULL;
+  //}
+
+  // FIXME: Visual Studio does not support per-config sources, yet.
+  //        (EXCLUDED_SOURCE_FILE_NAMES)
+  // if (globalGen->GetName().find("Visual Studio") != std::string::npos) {
+  //  return cmQtAutoGen::FULL;
+  //}
+
+  return cmQtAutoGen::WRAP;
 }
 
 static std::string GetAutogenTargetName(cmGeneratorTarget const* target)
@@ -84,43 +103,44 @@ static std::string GetAutogenTargetBuildDir(cmGeneratorTarget const* target)
   return targetDir;
 }
 
-static std::string GetQtMajorVersion(cmGeneratorTarget const* target)
+std::string cmQtAutoGeneratorInitializer::GetQtMajorVersion(
+  cmGeneratorTarget const* target)
 {
   cmMakefile* makefile = target->Target->GetMakefile();
-  std::string qtMajorVersion = makefile->GetSafeDefinition("QT_VERSION_MAJOR");
-  if (qtMajorVersion.empty()) {
-    qtMajorVersion = makefile->GetSafeDefinition("Qt5Core_VERSION_MAJOR");
+  std::string qtMajor = makefile->GetSafeDefinition("QT_VERSION_MAJOR");
+  if (qtMajor.empty()) {
+    qtMajor = makefile->GetSafeDefinition("Qt5Core_VERSION_MAJOR");
   }
   const char* targetQtVersion =
     target->GetLinkInterfaceDependentStringProperty("QT_MAJOR_VERSION", "");
-  if (targetQtVersion != CM_NULLPTR) {
-    qtMajorVersion = targetQtVersion;
+  if (targetQtVersion != nullptr) {
+    qtMajor = targetQtVersion;
   }
-  return qtMajorVersion;
+  return qtMajor;
 }
 
-static std::string GetQtMinorVersion(cmGeneratorTarget const* target,
-                                     const std::string& qtMajorVersion)
+std::string cmQtAutoGeneratorInitializer::GetQtMinorVersion(
+  cmGeneratorTarget const* target, std::string const& qtVersionMajor)
 {
   cmMakefile* makefile = target->Target->GetMakefile();
-  std::string qtMinorVersion;
-  if (qtMajorVersion == "5") {
-    qtMinorVersion = makefile->GetSafeDefinition("Qt5Core_VERSION_MINOR");
+  std::string qtMinor;
+  if (qtVersionMajor == "5") {
+    qtMinor = makefile->GetSafeDefinition("Qt5Core_VERSION_MINOR");
   }
-  if (qtMinorVersion.empty()) {
-    qtMinorVersion = makefile->GetSafeDefinition("QT_VERSION_MINOR");
+  if (qtMinor.empty()) {
+    qtMinor = makefile->GetSafeDefinition("QT_VERSION_MINOR");
   }
 
   const char* targetQtVersion =
     target->GetLinkInterfaceDependentStringProperty("QT_MINOR_VERSION", "");
-  if (targetQtVersion != CM_NULLPTR) {
-    qtMinorVersion = targetQtVersion;
+  if (targetQtVersion != nullptr) {
+    qtMinor = targetQtVersion;
   }
-  return qtMinorVersion;
+  return qtMinor;
 }
 
-static bool QtVersionGreaterOrEqual(const std::string& major,
-                                    const std::string& minor,
+static bool QtVersionGreaterOrEqual(std::string const& major,
+                                    std::string const& minor,
                                     unsigned long requestMajor,
                                     unsigned long requestMinor)
 {
@@ -134,76 +154,17 @@ static bool QtVersionGreaterOrEqual(const std::string& major,
   return false;
 }
 
-static void GetCompileDefinitionsAndDirectories(
-  cmGeneratorTarget const* target, const std::string& config,
-  std::string& incs, std::string& defs)
-{
-  cmLocalGenerator* localGen = target->GetLocalGenerator();
-  {
-    std::vector<std::string> includeDirs;
-    // Get the include dirs for this target, without stripping the implicit
-    // include dirs off, see
-    // https://gitlab.kitware.com/cmake/cmake/issues/13667
-    localGen->GetIncludeDirectories(includeDirs, target, "CXX", config, false);
-    incs = cmJoin(includeDirs, ";");
-  }
-  {
-    std::set<std::string> defines;
-    localGen->AddCompileDefinitions(defines, target, config, "CXX");
-    defs += cmJoin(defines, ";");
-  }
-}
-
-static bool IsMultiConfig(cmGlobalGenerator* globalGen)
-{
-  // FIXME: Xcode does not support per-config sources, yet.
-  //        (EXCLUDED_SOURCE_FILE_NAMES)
-  //        Treat it as a single configuration generator meanwhile.
-  if (globalGen->GetName().find("Xcode") != std::string::npos) {
-    return false;
-  }
-  // FIXME: Visual Studio does not fully support per-config sources yet.
-  if (globalGen->GetName().find("Visual Studio") != std::string::npos) {
-    return false;
-  }
-  return globalGen->IsMultiConfig();
-}
-
-static std::vector<std::string> GetConfigurations(
-  cmMakefile* makefile, std::string* config = CM_NULLPTR)
-{
-  std::vector<std::string> configs;
-  {
-    std::string cfg = makefile->GetConfigurations(configs);
-    if (config != CM_NULLPTR) {
-      *config = cfg;
-    }
-  }
-  // Add empty configuration on demand
-  if (configs.empty()) {
-    configs.push_back("");
-  }
-  return configs;
-}
-
-static std::vector<std::string> GetConfigurationSuffixes(cmMakefile* makefile)
+static void GetConfigs(cmMakefile* makefile, std::string& configDefault,
+                       std::vector<std::string>& configsList)
 {
-  std::vector<std::string> suffixes;
-  if (IsMultiConfig(makefile->GetGlobalGenerator())) {
-    makefile->GetConfigurations(suffixes);
-    for (std::vector<std::string>::iterator it = suffixes.begin();
-         it != suffixes.end(); ++it) {
-      it->insert(0, "_");
-    }
+  configDefault = makefile->GetConfigurations(configsList);
+  if (configsList.empty()) {
+    configsList.push_back(configDefault);
   }
-  if (suffixes.empty()) {
-    suffixes.push_back("");
-  }
-  return suffixes;
 }
 
 static void AddDefinitionEscaped(cmMakefile* makefile, const char* key,
-                                 const std::string& value)
+                                 std::string const& value)
 {
   makefile->AddDefinition(key,
                           cmOutputConverter::EscapeForCMake(value).c_str());
@@ -216,290 +177,389 @@ static void AddDefinitionEscaped(cmMakefile* makefile, const char* key,
     key, cmOutputConverter::EscapeForCMake(cmJoin(values, ";")).c_str());
 }
 
-static bool AddToSourceGroup(cmMakefile* makefile, const std::string& fileName,
-                             cmQtAutoGeneratorCommon::GeneratorType genType)
+static void AddDefinitionEscaped(cmMakefile* makefile, const char* key,
+                                 const std::set<std::string>& values)
 {
-  cmSourceGroup* sourceGroup = CM_NULLPTR;
+  makefile->AddDefinition(
+    key, cmOutputConverter::EscapeForCMake(cmJoin(values, ";")).c_str());
+}
+
+static void AddDefinitionEscaped(
+  cmMakefile* makefile, const char* key,
+  const std::vector<std::vector<std::string>>& lists)
+{
+  std::vector<std::string> seplist;
+  for (const std::vector<std::string>& list : lists) {
+    std::string blist = "{";
+    blist += cmJoin(list, ";");
+    blist += "}";
+    seplist.push_back(std::move(blist));
+  }
+  makefile->AddDefinition(key, cmOutputConverter::EscapeForCMake(
+                                 cmJoin(seplist, cmQtAutoGen::listSep))
+                                 .c_str());
+}
+
+static bool AddToSourceGroup(cmMakefile* makefile, std::string const& fileName,
+                             cmQtAutoGen::Generator genType)
+{
+  cmSourceGroup* sourceGroup = nullptr;
   // Acquire source group
   {
-    const char* groupName = CM_NULLPTR;
-    // Use generator specific group name
-    switch (genType) {
-      case cmQtAutoGeneratorCommon::MOC:
-        groupName =
-          makefile->GetState()->GetGlobalProperty("AUTOMOC_SOURCE_GROUP");
-        break;
-      case cmQtAutoGeneratorCommon::RCC:
-        groupName =
-          makefile->GetState()->GetGlobalProperty("AUTORCC_SOURCE_GROUP");
-        break;
-      default:
-        break;
-    }
-    // Use default group name on demand
-    if ((groupName == CM_NULLPTR) || (*groupName == 0)) {
-      groupName =
-        makefile->GetState()->GetGlobalProperty("AUTOGEN_SOURCE_GROUP");
-    }
-    // Generate a source group on demand
-    if ((groupName != CM_NULLPTR) && (*groupName != 0)) {
-      {
-        const char* delimiter =
-          makefile->GetDefinition("SOURCE_GROUP_DELIMITER");
-        if (delimiter == CM_NULLPTR) {
-          delimiter = "\\";
-        }
-        std::vector<std::string> folders =
-          cmSystemTools::tokenize(groupName, delimiter);
-        sourceGroup = makefile->GetSourceGroup(folders);
-        if (sourceGroup == CM_NULLPTR) {
-          makefile->AddSourceGroup(folders);
-          sourceGroup = makefile->GetSourceGroup(folders);
+    std::string property;
+    std::string groupName;
+    {
+      std::array<std::string, 2> props;
+      // Use generator specific group name
+      switch (genType) {
+        case cmQtAutoGen::MOC:
+          props[0] = "AUTOMOC_SOURCE_GROUP";
+          break;
+        case cmQtAutoGen::RCC:
+          props[0] = "AUTORCC_SOURCE_GROUP";
+          break;
+        default:
+          props[0] = "AUTOGEN_SOURCE_GROUP";
+          break;
+      }
+      props[1] = "AUTOGEN_SOURCE_GROUP";
+      for (std::string& prop : props) {
+        const char* propName = makefile->GetState()->GetGlobalProperty(prop);
+        if ((propName != nullptr) && (*propName != '\0')) {
+          groupName = propName;
+          property = std::move(prop);
+          break;
         }
       }
-      if (sourceGroup == CM_NULLPTR) {
-        cmSystemTools::Error(
-          "Autogen: Could not create or find source group: ",
-          cmQtAutoGeneratorCommon::Quoted(groupName).c_str());
+    }
+    // Generate a source group on demand
+    if (!groupName.empty()) {
+      sourceGroup = makefile->GetOrCreateSourceGroup(groupName);
+      if (sourceGroup == nullptr) {
+        std::ostringstream ost;
+        ost << cmQtAutoGen::GeneratorNameUpper(genType);
+        ost << ": " << property;
+        ost << ": Could not find or create the source group ";
+        ost << cmQtAutoGen::Quoted(groupName);
+        cmSystemTools::Error(ost.str().c_str());
         return false;
       }
     }
   }
-  if (sourceGroup != CM_NULLPTR) {
+  if (sourceGroup != nullptr) {
     sourceGroup->AddGroupFile(fileName);
   }
   return true;
 }
 
-static void AddGeneratedSource(cmMakefile* makefile,
-                               const std::string& filename,
-                               cmQtAutoGeneratorCommon::GeneratorType genType)
+static void AddCleanFile(cmMakefile* makefile, std::string const& fileName)
 {
-  cmSourceFile* gFile = makefile->GetOrCreateSource(filename, true);
-  gFile->SetProperty("GENERATED", "1");
-  gFile->SetProperty("SKIP_AUTOGEN", "On");
-
-  AddToSourceGroup(makefile, filename, genType);
+  makefile->AppendProperty("ADDITIONAL_MAKE_CLEAN_FILES", fileName.c_str(),
+                           false);
 }
 
-static void AcquireScanFiles(cmGeneratorTarget const* target,
-                             std::vector<std::string>& mocUicSources,
-                             std::vector<std::string>& mocUicHeaders,
-                             std::vector<std::string>& mocSkipList,
-                             std::vector<std::string>& uicSkipList)
+static std::vector<std::string> AddGeneratedSource(
+  cmGeneratorTarget* target, std::string const& filename,
+  cmQtAutoGen::MultiConfig multiConfig,
+  const std::vector<std::string>& configsList, cmQtAutoGen::Generator genType)
 {
-  const bool mocTarget = target->GetPropertyAsBool("AUTOMOC");
-  const bool uicTarget = target->GetPropertyAsBool("AUTOUIC");
-
-  std::vector<cmSourceFile*> srcFiles;
-  target->GetConfigCommonSourceFiles(srcFiles);
-  for (std::vector<cmSourceFile*>::const_iterator fileIt = srcFiles.begin();
-       fileIt != srcFiles.end(); ++fileIt) {
-    cmSourceFile* sf = *fileIt;
-    const cmSystemTools::FileFormat fileType =
-      cmSystemTools::GetFileFormat(sf->GetExtension().c_str());
-
-    if (!(fileType == cmSystemTools::CXX_FILE_FORMAT) &&
-        !(fileType == cmSystemTools::HEADER_FILE_FORMAT)) {
-      continue;
+  std::vector<std::string> genFiles;
+  // Register source file in makefile and source group
+  if (multiConfig != cmQtAutoGen::FULL) {
+    genFiles.push_back(filename);
+  } else {
+    for (std::string const& cfg : configsList) {
+      genFiles.push_back(
+        cmQtAutoGen::AppendFilenameSuffix(filename, "_" + cfg));
     }
-    if (PropertyEnabled(sf, "GENERATED") &&
-        !target->GetPropertyAsBool("__UNDOCUMENTED_AUTOGEN_GENERATED_FILES")) {
-      // FIXME: Add a policy whose NEW behavior allows generated files.
-      // The implementation already works.  We disable it here to avoid
-      // changing behavior for existing projects that do not expect it.
-      continue;
+  }
+  {
+    cmMakefile* makefile = target->Target->GetMakefile();
+    for (std::string const& genFile : genFiles) {
+      {
+        cmSourceFile* gFile = makefile->GetOrCreateSource(genFile, true);
+        gFile->SetProperty("GENERATED", "1");
+        gFile->SetProperty("SKIP_AUTOGEN", "On");
+      }
+      AddToSourceGroup(makefile, genFile, genType);
     }
-    const std::string absFile =
-      cmsys::SystemTools::GetRealPath(sf->GetFullPath());
-    // Skip flags
-    const bool skipAll = PropertyEnabled(sf, "SKIP_AUTOGEN");
-    const bool mocSkip = skipAll || PropertyEnabled(sf, "SKIP_AUTOMOC");
-    const bool uicSkip = skipAll || PropertyEnabled(sf, "SKIP_AUTOUIC");
-    // Add file name to skip lists.
-    // Do this even when the file is not added to the sources/headers lists
-    // because the file name may be extracted from an other file when
-    // processing
-    if (mocSkip) {
-      mocSkipList.push_back(absFile);
+  }
+
+  // Add source file to target
+  if (multiConfig != cmQtAutoGen::FULL) {
+    target->AddSource(filename);
+  } else {
+    for (std::string const& cfg : configsList) {
+      std::string src = "$<$<CONFIG:";
+      src += cfg;
+      src += ">:";
+      src += cmQtAutoGen::AppendFilenameSuffix(filename, "_" + cfg);
+      src += ">";
+      target->AddSource(src);
     }
-    if (uicSkip) {
-      uicSkipList.push_back(absFile);
+  }
+
+  return genFiles;
+}
+
+/* @brief Tests if targetDepend is a STATIC_LIBRARY and if any of its
+ * recursive STATIC_LIBRARY dependencies depends on targetOrigin
+ * (STATIC_LIBRARY cycle).
+ */
+static bool StaticLibraryCycle(cmGeneratorTarget const* targetOrigin,
+                               cmGeneratorTarget const* targetDepend,
+                               std::string const& config)
+{
+  bool cycle = false;
+  if ((targetOrigin->GetType() == cmStateEnums::STATIC_LIBRARY) &&
+      (targetDepend->GetType() == cmStateEnums::STATIC_LIBRARY)) {
+    std::set<cmGeneratorTarget const*> knownLibs;
+    std::deque<cmGeneratorTarget const*> testLibs;
+
+    // Insert initial static_library dependency
+    knownLibs.insert(targetDepend);
+    testLibs.push_back(targetDepend);
+
+    while (!testLibs.empty()) {
+      cmGeneratorTarget const* testTarget = testLibs.front();
+      testLibs.pop_front();
+      // Check if the test target is the origin target (cycle)
+      if (testTarget == targetOrigin) {
+        cycle = true;
+        break;
+      }
+      // Collect all static_library dependencies from the test target
+      cmLinkImplementationLibraries const* libs =
+        testTarget->GetLinkImplementationLibraries(config);
+      if (libs != nullptr) {
+        for (cmLinkItem const& item : libs->Libraries) {
+          cmGeneratorTarget const* depTarget = item.Target;
+          if ((depTarget != nullptr) &&
+              (depTarget->GetType() == cmStateEnums::STATIC_LIBRARY) &&
+              knownLibs.insert(depTarget).second) {
+            testLibs.push_back(depTarget);
+          }
+        }
+      }
     }
+  }
+  return cycle;
+}
 
-    if ((mocTarget && !mocSkip) || (uicTarget && !uicSkip)) {
-      // Add file name to sources or headers list
-      switch (fileType) {
-        case cmSystemTools::CXX_FILE_FORMAT:
-          mocUicSources.push_back(absFile);
-          break;
-        case cmSystemTools::HEADER_FILE_FORMAT:
-          mocUicHeaders.push_back(absFile);
-          break;
-        default:
-          break;
+struct cmQtAutoGenSetup
+{
+  std::set<std::string> MocSkip;
+  std::set<std::string> UicSkip;
+
+  std::map<std::string, std::string> ConfigMocIncludes;
+  std::map<std::string, std::string> ConfigMocDefines;
+  std::map<std::string, std::string> ConfigUicOptions;
+};
+
+static void SetupAcquireSkipFiles(cmQtAutoGenDigest const& digest,
+                                  cmQtAutoGenSetup& setup)
+{
+  // Read skip files from makefile sources
+  {
+    const std::vector<cmSourceFile*>& allSources =
+      digest.Target->Makefile->GetSourceFiles();
+    for (cmSourceFile* sf : allSources) {
+      // sf->GetExtension() is only valid after sf->GetFullPath() ...
+      std::string const& fPath = sf->GetFullPath();
+      cmSystemTools::FileFormat const fileType =
+        cmSystemTools::GetFileFormat(sf->GetExtension().c_str());
+      if (!(fileType == cmSystemTools::CXX_FILE_FORMAT) &&
+          !(fileType == cmSystemTools::HEADER_FILE_FORMAT)) {
+        continue;
+      }
+      const bool skipAll = sf->GetPropertyAsBool("SKIP_AUTOGEN");
+      const bool mocSkip = digest.MocEnabled &&
+        (skipAll || sf->GetPropertyAsBool("SKIP_AUTOMOC"));
+      const bool uicSkip = digest.UicEnabled &&
+        (skipAll || sf->GetPropertyAsBool("SKIP_AUTOUIC"));
+      if (mocSkip || uicSkip) {
+        std::string const absFile = cmSystemTools::GetRealPath(fPath);
+        if (mocSkip) {
+          setup.MocSkip.insert(absFile);
+        }
+        if (uicSkip) {
+          setup.UicSkip.insert(absFile);
+        }
       }
     }
   }
 }
 
-static void MocSetupAutoTarget(
-  cmGeneratorTarget const* target, const std::string& autogenTargetName,
-  std::string const& qtMajorVersion, std::string const& config,
-  std::vector<std::string> const& configs,
-  std::vector<std::string> const& mocSkipList,
-  std::map<std::string, std::string>& configMocIncludes,
-  std::map<std::string, std::string>& configMocDefines)
+static void SetupAutoTargetMoc(cmQtAutoGenDigest const& digest,
+                               std::string const& configDefault,
+                               std::vector<std::string> const& configsList,
+                               cmQtAutoGenSetup& setup)
 {
-  cmLocalGenerator* lg = target->GetLocalGenerator();
+  cmGeneratorTarget const* target = digest.Target;
+  cmLocalGenerator* localGen = target->GetLocalGenerator();
   cmMakefile* makefile = target->Target->GetMakefile();
 
+  AddDefinitionEscaped(makefile, "_moc_skip", setup.MocSkip);
   AddDefinitionEscaped(makefile, "_moc_options",
                        GetSafeProperty(target, "AUTOMOC_MOC_OPTIONS"));
-  AddDefinitionEscaped(makefile, "_moc_skip", mocSkipList);
   AddDefinitionEscaped(makefile, "_moc_relaxed_mode",
                        makefile->IsOn("CMAKE_AUTOMOC_RELAXED_MODE") ? "TRUE"
                                                                     : "FALSE");
+  AddDefinitionEscaped(makefile, "_moc_macro_names",
+                       GetSafeProperty(target, "AUTOMOC_MACRO_NAMES"));
   AddDefinitionEscaped(makefile, "_moc_depend_filters",
                        GetSafeProperty(target, "AUTOMOC_DEPEND_FILTERS"));
 
-  if (QtVersionGreaterOrEqual(
-        qtMajorVersion, GetQtMinorVersion(target, qtMajorVersion), 5, 8)) {
-    AddDefinitionEscaped(
-      makefile, "_moc_predefs_cmd",
-      makefile->GetSafeDefinition("CMAKE_CXX_COMPILER_PREDEFINES_COMMAND"));
+  // Compiler predefines
+  if (target->GetPropertyAsBool("AUTOMOC_COMPILER_PREDEFINES")) {
+    if (QtVersionGreaterOrEqual(digest.QtVersionMajor, digest.QtVersionMinor,
+                                5, 8)) {
+      AddDefinitionEscaped(
+        makefile, "_moc_predefs_cmd",
+        makefile->GetSafeDefinition("CMAKE_CXX_COMPILER_PREDEFINES_COMMAND"));
+    }
   }
   // Moc includes and compile definitions
   {
-    // Default settings
-    std::string incs;
-    std::string compileDefs;
-    GetCompileDefinitionsAndDirectories(target, config, incs, compileDefs);
-    AddDefinitionEscaped(makefile, "_moc_incs", incs);
-    AddDefinitionEscaped(makefile, "_moc_compile_defs", compileDefs);
-
-    // Configuration specific settings
-    for (std::vector<std::string>::const_iterator li = configs.begin();
-         li != configs.end(); ++li) {
-      std::string configIncs;
-      std::string configCompileDefs;
-      GetCompileDefinitionsAndDirectories(target, *li, configIncs,
-                                          configCompileDefs);
-      if (configIncs != incs) {
-        configMocIncludes[*li] = cmOutputConverter::EscapeForCMake(configIncs);
+    auto GetIncludeDirs = [target,
+                           localGen](std::string const& cfg) -> std::string {
+      // Get the include dirs for this target, without stripping the implicit
+      // include dirs off, see
+      // https://gitlab.kitware.com/cmake/cmake/issues/13667
+      std::vector<std::string> includeDirs;
+      localGen->GetIncludeDirectories(includeDirs, target, "CXX", cfg, false);
+      return cmJoin(includeDirs, ";");
+    };
+    auto GetCompileDefinitions =
+      [target, localGen](std::string const& cfg) -> std::string {
+      std::set<std::string> defines;
+      localGen->AddCompileDefinitions(defines, target, cfg, "CXX");
+      return cmJoin(defines, ";");
+    };
+
+    // Default configuration settings
+    std::string const includeDirs = GetIncludeDirs(configDefault);
+    std::string const compileDefs = GetCompileDefinitions(configDefault);
+    // Other configuration settings
+    for (std::string const& cfg : configsList) {
+      {
+        std::string const configIncludeDirs = GetIncludeDirs(cfg);
+        if (configIncludeDirs != includeDirs) {
+          setup.ConfigMocIncludes[cfg] = configIncludeDirs;
+        }
       }
-      if (configCompileDefs != compileDefs) {
-        configMocDefines[*li] =
-          cmOutputConverter::EscapeForCMake(configCompileDefs);
+      {
+        std::string const configCompileDefs = GetCompileDefinitions(cfg);
+        if (configCompileDefs != compileDefs) {
+          setup.ConfigMocDefines[cfg] = configCompileDefs;
+        }
       }
     }
+    AddDefinitionEscaped(makefile, "_moc_include_dirs", includeDirs);
+    AddDefinitionEscaped(makefile, "_moc_compile_defs", compileDefs);
   }
 
   // Moc executable
   {
+    std::string mocExec;
     std::string err;
-    const char* mocExec = CM_NULLPTR;
-    if (qtMajorVersion == "5") {
-      cmGeneratorTarget* qt5Moc = lg->FindGeneratorTargetToUse("Qt5::moc");
-      if (qt5Moc != CM_NULLPTR) {
-        mocExec = qt5Moc->ImportedGetLocation("");
+
+    if (digest.QtVersionMajor == "5") {
+      cmGeneratorTarget* tgt = localGen->FindGeneratorTargetToUse("Qt5::moc");
+      if (tgt != nullptr) {
+        mocExec = SafeString(tgt->ImportedGetLocation(""));
       } else {
-        err = "Qt5::moc target not found " + autogenTargetName;
+        err = "AUTOMOC: Qt5::moc target not found";
       }
-    } else if (qtMajorVersion == "4") {
-      cmGeneratorTarget* qt4Moc = lg->FindGeneratorTargetToUse("Qt4::moc");
-      if (qt4Moc != CM_NULLPTR) {
-        mocExec = qt4Moc->ImportedGetLocation("");
+    } else if (digest.QtVersionMajor == "4") {
+      cmGeneratorTarget* tgt = localGen->FindGeneratorTargetToUse("Qt4::moc");
+      if (tgt != nullptr) {
+        mocExec = SafeString(tgt->ImportedGetLocation(""));
       } else {
-        err = "Qt4::moc target not found " + autogenTargetName;
+        err = "AUTOMOC: Qt4::moc target not found";
       }
     } else {
-      err = "The CMAKE_AUTOMOC feature supports only Qt 4 and Qt 5 ";
-      err += autogenTargetName;
+      err = "The AUTOMOC feature supports only Qt 4 and Qt 5";
     }
-    // Add definition or error
+
     if (err.empty()) {
-      AddDefinitionEscaped(makefile, "_qt_moc_executable",
-                           mocExec ? mocExec : "");
+      AddDefinitionEscaped(makefile, "_qt_moc_executable", mocExec);
     } else {
+      err += " (" + target->GetName() + ")";
       cmSystemTools::Error(err.c_str());
     }
   }
 }
 
-static void UicGetOpts(cmGeneratorTarget const* target,
-                       const std::string& config, std::string& optString)
+static void SetupAutoTargetUic(cmQtAutoGenDigest const& digest,
+                               std::string const& config,
+                               std::vector<std::string> const& configs,
+                               cmQtAutoGenSetup& setup)
 {
-  std::vector<std::string> opts;
-  target->GetAutoUicOptions(opts, config);
-  optString = cmJoin(opts, ";");
-}
-
-static void UicSetupAutoTarget(
-  cmGeneratorTarget const* target, std::string const& qtMajorVersion,
-  std::string const& config, std::vector<std::string> const& configs,
-  std::vector<std::string> const& uicSkipList,
-  std::map<std::string, std::string>& configUicOptions)
-{
-  cmLocalGenerator* lg = target->GetLocalGenerator();
+  cmGeneratorTarget const* target = digest.Target;
   cmMakefile* makefile = target->Target->GetMakefile();
 
-  AddDefinitionEscaped(makefile, "_uic_skip", uicSkipList);
-
   // Uic search paths
   {
     std::vector<std::string> uicSearchPaths;
-    cmSystemTools::ExpandListArgument(
-      GetSafeProperty(target, "AUTOUIC_SEARCH_PATHS"), uicSearchPaths);
-    const std::string srcDir = makefile->GetCurrentSourceDirectory();
-    for (std::vector<std::string>::iterator it = uicSearchPaths.begin();
-         it != uicSearchPaths.end(); ++it) {
-      *it = cmSystemTools::CollapseFullPath(*it, srcDir);
+    {
+      std::string const usp = GetSafeProperty(target, "AUTOUIC_SEARCH_PATHS");
+      if (!usp.empty()) {
+        cmSystemTools::ExpandListArgument(usp, uicSearchPaths);
+        std::string const srcDir = makefile->GetCurrentSourceDirectory();
+        for (std::string& path : uicSearchPaths) {
+          path = cmSystemTools::CollapseFullPath(path, srcDir);
+        }
+      }
     }
     AddDefinitionEscaped(makefile, "_uic_search_paths", uicSearchPaths);
   }
   // Uic target options
   {
+    auto UicGetOpts = [target](std::string const& cfg) -> std::string {
+      std::vector<std::string> opts;
+      target->GetAutoUicOptions(opts, cfg);
+      return cmJoin(opts, ";");
+    };
+
     // Default settings
-    std::string uicOpts;
-    UicGetOpts(target, config, uicOpts);
+    std::string const uicOpts = UicGetOpts(config);
     AddDefinitionEscaped(makefile, "_uic_target_options", uicOpts);
 
     // Configuration specific settings
-    for (std::vector<std::string>::const_iterator li = configs.begin();
-         li != configs.end(); ++li) {
-      std::string configUicOpts;
-      UicGetOpts(target, *li, configUicOpts);
+    for (std::string const& cfg : configs) {
+      std::string const configUicOpts = UicGetOpts(cfg);
       if (configUicOpts != uicOpts) {
-        configUicOptions[*li] =
-          cmOutputConverter::EscapeForCMake(configUicOpts);
+        setup.ConfigUicOptions[cfg] = configUicOpts;
       }
     }
   }
-  // Uic files options
+  // .ui files skip and options
   {
     std::vector<std::string> uiFileFiles;
-    std::vector<std::string> uiFileOptions;
+    std::vector<std::vector<std::string>> uiFileOptions;
     {
-      std::set<std::string> skipped;
-      skipped.insert(uicSkipList.begin(), uicSkipList.end());
-
-      const std::vector<cmSourceFile*> uiFilesWithOptions =
-        makefile->GetQtUiFilesWithOptions();
-      for (std::vector<cmSourceFile*>::const_iterator fileIt =
-             uiFilesWithOptions.begin();
-           fileIt != uiFilesWithOptions.end(); ++fileIt) {
-        cmSourceFile* sf = *fileIt;
-        const std::string absFile =
-          cmsys::SystemTools::GetRealPath(sf->GetFullPath());
-        if (skipped.insert(absFile).second) {
-          // The file wasn't skipped
-          uiFileFiles.push_back(absFile);
-          {
-            std::string opts = sf->GetProperty("AUTOUIC_OPTIONS");
-            cmSystemTools::ReplaceString(opts, ";",
-                                         cmQtAutoGeneratorCommon::listSep);
-            uiFileOptions.push_back(opts);
+      std::string const uiExt = "ui";
+      for (cmSourceFile* sf : makefile->GetSourceFiles()) {
+        // sf->GetExtension() is only valid after sf->GetFullPath() ...
+        std::string const& fPath = sf->GetFullPath();
+        if (sf->GetExtension() == uiExt) {
+          std::string const absFile = cmSystemTools::GetRealPath(fPath);
+          // Check if the file should be skipped
+          if (sf->GetPropertyAsBool("SKIP_AUTOUIC") ||
+              sf->GetPropertyAsBool("SKIP_AUTOGEN")) {
+            setup.UicSkip.insert(absFile);
+          }
+          // Check if the files has uic options
+          std::string const uicOpts = GetSafeProperty(sf, "AUTOUIC_OPTIONS");
+          if (!uicOpts.empty()) {
+            // Check if file isn't skipped
+            if (setup.UicSkip.count(absFile) == 0) {
+              uiFileFiles.push_back(absFile);
+              std::vector<std::string> optsVec;
+              cmSystemTools::ExpandListArgument(uicOpts, optsVec);
+              uiFileOptions.push_back(std::move(optsVec));
+            }
           }
         }
       }
@@ -508,233 +568,134 @@ static void UicSetupAutoTarget(
     AddDefinitionEscaped(makefile, "_qt_uic_options_options", uiFileOptions);
   }
 
+  AddDefinitionEscaped(makefile, "_uic_skip", setup.UicSkip);
+
   // Uic executable
   {
     std::string err;
-    const char* uicExec = CM_NULLPTR;
-    if (qtMajorVersion == "5") {
-      cmGeneratorTarget* qt5Uic = lg->FindGeneratorTargetToUse("Qt5::uic");
-      if (qt5Uic != CM_NULLPTR) {
-        uicExec = qt5Uic->ImportedGetLocation("");
+    std::string uicExec;
+
+    cmLocalGenerator* localGen = target->GetLocalGenerator();
+    if (digest.QtVersionMajor == "5") {
+      cmGeneratorTarget* tgt = localGen->FindGeneratorTargetToUse("Qt5::uic");
+      if (tgt != nullptr) {
+        uicExec = SafeString(tgt->ImportedGetLocation(""));
       } else {
         // Project does not use Qt5Widgets, but has AUTOUIC ON anyway
       }
-    } else if (qtMajorVersion == "4") {
-      cmGeneratorTarget* qt4Uic = lg->FindGeneratorTargetToUse("Qt4::uic");
-      if (qt4Uic != CM_NULLPTR) {
-        uicExec = qt4Uic->ImportedGetLocation("");
+    } else if (digest.QtVersionMajor == "4") {
+      cmGeneratorTarget* tgt = localGen->FindGeneratorTargetToUse("Qt4::uic");
+      if (tgt != nullptr) {
+        uicExec = SafeString(tgt->ImportedGetLocation(""));
       } else {
-        err = "Qt4::uic target not found " + target->GetName();
+        err = "AUTOUIC: Qt4::uic target not found";
       }
     } else {
-      err = "The CMAKE_AUTOUIC feature supports only Qt 4 and Qt 5 ";
-      err += target->GetName();
+      err = "The AUTOUIC feature supports only Qt 4 and Qt 5";
     }
-    // Add definition or error
+
     if (err.empty()) {
-      AddDefinitionEscaped(makefile, "_qt_uic_executable",
-                           uicExec ? uicExec : "");
+      AddDefinitionEscaped(makefile, "_qt_uic_executable", uicExec);
     } else {
+      err += " (" + target->GetName() + ")";
       cmSystemTools::Error(err.c_str());
     }
   }
 }
 
 static std::string RccGetExecutable(cmGeneratorTarget const* target,
-                                    const std::string& qtMajorVersion)
+                                    std::string const& qtMajorVersion)
 {
   std::string rccExec;
-  cmLocalGenerator* lg = target->GetLocalGenerator();
+  std::string err;
+
+  cmLocalGenerator* localGen = target->GetLocalGenerator();
   if (qtMajorVersion == "5") {
-    cmGeneratorTarget* qt5Rcc = lg->FindGeneratorTargetToUse("Qt5::rcc");
-    if (qt5Rcc != CM_NULLPTR) {
-      rccExec = qt5Rcc->ImportedGetLocation("");
+    cmGeneratorTarget* tgt = localGen->FindGeneratorTargetToUse("Qt5::rcc");
+    if (tgt != nullptr) {
+      rccExec = SafeString(tgt->ImportedGetLocation(""));
     } else {
-      cmSystemTools::Error("Qt5::rcc target not found ",
-                           target->GetName().c_str());
+      err = "AUTORCC: Qt5::rcc target not found";
     }
   } else if (qtMajorVersion == "4") {
-    cmGeneratorTarget* qt4Rcc = lg->FindGeneratorTargetToUse("Qt4::rcc");
-    if (qt4Rcc != CM_NULLPTR) {
-      rccExec = qt4Rcc->ImportedGetLocation("");
+    cmGeneratorTarget* tgt = localGen->FindGeneratorTargetToUse("Qt4::rcc");
+    if (tgt != nullptr) {
+      rccExec = SafeString(tgt->ImportedGetLocation(""));
     } else {
-      cmSystemTools::Error("Qt4::rcc target not found ",
-                           target->GetName().c_str());
+      err = "AUTORCC: Qt4::rcc target not found";
     }
   } else {
-    cmSystemTools::Error(
-      "The CMAKE_AUTORCC feature supports only Qt 4 and Qt 5 ",
-      target->GetName().c_str());
+    err = "The AUTORCC feature supports only Qt 4 and Qt 5";
   }
-  return rccExec;
-}
 
-static void RccMergeOptions(std::vector<std::string>& opts,
-                            const std::vector<std::string>& fileOpts,
-                            bool isQt5)
-{
-  static const char* valueOptions[] = { "name", "root", "compress",
-                                        "threshold" };
-  std::vector<std::string> extraOpts;
-  for (std::vector<std::string>::const_iterator fit = fileOpts.begin();
-       fit != fileOpts.end(); ++fit) {
-    std::vector<std::string>::iterator existingIt =
-      std::find(opts.begin(), opts.end(), *fit);
-    if (existingIt != opts.end()) {
-      const char* optName = fit->c_str();
-      if (*optName == '-') {
-        ++optName;
-        if (isQt5 && *optName == '-') {
-          ++optName;
-        }
-      }
-      // Test if this is a value option and change the existing value
-      if ((optName != fit->c_str()) &&
-          std::find_if(cmArrayBegin(valueOptions), cmArrayEnd(valueOptions),
-                       cmStrCmp(optName)) != cmArrayEnd(valueOptions)) {
-        const std::vector<std::string>::iterator existValueIt(existingIt + 1);
-        const std::vector<std::string>::const_iterator fileValueIt(fit + 1);
-        if ((existValueIt != opts.end()) && (fileValueIt != fileOpts.end())) {
-          *existValueIt = *fileValueIt;
-          ++fit;
-        }
-      }
-    } else {
-      extraOpts.push_back(*fit);
-    }
+  if (!err.empty()) {
+    err += " (" + target->GetName() + ")";
+    cmSystemTools::Error(err.c_str());
   }
-  opts.insert(opts.end(), extraOpts.begin(), extraOpts.end());
+  return rccExec;
 }
 
-static void RccSetupAutoTarget(cmGeneratorTarget const* target,
-                               const std::string& qtMajorVersion)
+static void SetupAutoTargetRcc(cmQtAutoGenDigest const& digest)
 {
-  cmMakefile* makefile = target->Target->GetMakefile();
-  const bool qtMajorVersion5 = (qtMajorVersion == "5");
-  const std::string rccCommand = RccGetExecutable(target, qtMajorVersion);
-  std::vector<std::string> _rcc_files;
-  std::vector<std::string> _rcc_inputs;
-  std::vector<std::string> rccFileFiles;
-  std::vector<std::string> rccFileOptions;
-  std::vector<std::string> rccOptionsTarget;
-  if (const char* opts = target->GetProperty("AUTORCC_OPTIONS")) {
-    cmSystemTools::ExpandListArgument(opts, rccOptionsTarget);
+  std::vector<std::string> rccFiles;
+  std::vector<std::string> rccBuilds;
+  std::vector<std::vector<std::string>> rccOptions;
+  std::vector<std::vector<std::string>> rccInputs;
+
+  for (cmQtAutoGenDigestQrc const& qrcDigest : digest.Qrcs) {
+    rccFiles.push_back(qrcDigest.QrcFile);
+    rccBuilds.push_back(qrcDigest.RccFile);
+    rccOptions.push_back(qrcDigest.Options);
+    rccInputs.push_back(qrcDigest.Resources);
   }
 
-  std::vector<cmSourceFile*> srcFiles;
-  target->GetConfigCommonSourceFiles(srcFiles);
-  for (std::vector<cmSourceFile*>::const_iterator fileIt = srcFiles.begin();
-       fileIt != srcFiles.end(); ++fileIt) {
-    cmSourceFile* sf = *fileIt;
-    if ((sf->GetExtension() == "qrc") &&
-        !PropertyEnabled(sf, "SKIP_AUTOGEN") &&
-        !PropertyEnabled(sf, "SKIP_AUTORCC")) {
-      const std::string absFile =
-        cmsys::SystemTools::GetRealPath(sf->GetFullPath());
-      // qrc file
-      _rcc_files.push_back(absFile);
-      // qrc file entries
-      {
-        std::string entriesList = "{";
-        // Read input file list only for non generated .qrc files.
-        if (!PropertyEnabled(sf, "GENERATED")) {
-          std::string error;
-          std::vector<std::string> files;
-          if (cmQtAutoGeneratorCommon::RccListInputs(
-                qtMajorVersion, rccCommand, absFile, files, &error)) {
-            entriesList += cmJoin(files, cmQtAutoGeneratorCommon::listSep);
-          } else {
-            cmSystemTools::Error(error.c_str());
-          }
-        }
-        entriesList += "}";
-        _rcc_inputs.push_back(entriesList);
-      }
-      // rcc options for this qrc file
-      {
-        // Merged target and file options
-        std::vector<std::string> rccOptions(rccOptionsTarget);
-        if (const char* prop = sf->GetProperty("AUTORCC_OPTIONS")) {
-          std::vector<std::string> optsVec;
-          cmSystemTools::ExpandListArgument(prop, optsVec);
-          RccMergeOptions(rccOptions, optsVec, qtMajorVersion5);
-        }
-        // Only store non empty options lists
-        if (!rccOptions.empty()) {
-          rccFileFiles.push_back(absFile);
-          rccFileOptions.push_back(
-            cmJoin(rccOptions, cmQtAutoGeneratorCommon::listSep));
-        }
-      }
-    }
-  }
-
-  AddDefinitionEscaped(makefile, "_qt_rcc_executable", rccCommand);
-  AddDefinitionEscaped(makefile, "_rcc_files", _rcc_files);
-  AddDefinitionEscaped(makefile, "_rcc_inputs", _rcc_inputs);
-  AddDefinitionEscaped(makefile, "_rcc_options_files", rccFileFiles);
-  AddDefinitionEscaped(makefile, "_rcc_options_options", rccFileOptions);
-}
-
-void cmQtAutoGeneratorInitializer::InitializeAutogenSources(
-  cmGeneratorTarget* target)
-{
-  if (target->GetPropertyAsBool("AUTOMOC")) {
-    cmMakefile* makefile = target->Target->GetMakefile();
-    const std::vector<std::string> suffixes =
-      GetConfigurationSuffixes(makefile);
-    // Get build directory
-    const std::string autogenBuildDir = GetAutogenTargetBuildDir(target);
-    // Register all compilation files as generated
-    for (std::vector<std::string>::const_iterator it = suffixes.begin();
-         it != suffixes.end(); ++it) {
-      std::string mcFile = autogenBuildDir + "/mocs_compilation";
-      mcFile += *it;
-      mcFile += ".cpp";
-      AddGeneratedSource(makefile, mcFile, cmQtAutoGeneratorCommon::MOC);
-    }
-    // Mocs compilation file
-    if (IsMultiConfig(target->GetGlobalGenerator())) {
-      target->AddSource(autogenBuildDir + "/mocs_compilation_$<CONFIG>.cpp");
-    } else {
-      target->AddSource(autogenBuildDir + "/mocs_compilation.cpp");
-    }
-  }
+  cmMakefile* makefile = digest.Target->Target->GetMakefile();
+  AddDefinitionEscaped(makefile, "_qt_rcc_executable",
+                       RccGetExecutable(digest.Target, digest.QtVersionMajor));
+  AddDefinitionEscaped(makefile, "_rcc_files", rccFiles);
+  AddDefinitionEscaped(makefile, "_rcc_builds", rccBuilds);
+  AddDefinitionEscaped(makefile, "_rcc_options", rccOptions);
+  AddDefinitionEscaped(makefile, "_rcc_inputs", rccInputs);
 }
 
 void cmQtAutoGeneratorInitializer::InitializeAutogenTarget(
-  cmLocalGenerator* lg, cmGeneratorTarget* target)
+  cmQtAutoGenDigest& digest)
 {
+  cmGeneratorTarget* target = digest.Target;
   cmMakefile* makefile = target->Target->GetMakefile();
+  cmLocalGenerator* localGen = target->GetLocalGenerator();
+  cmGlobalGenerator* globalGen = localGen->GetGlobalGenerator();
 
-  // Create a custom target for running generators at buildtime
-  const bool mocEnabled = target->GetPropertyAsBool("AUTOMOC");
-  const bool uicEnabled = target->GetPropertyAsBool("AUTOUIC");
-  const bool rccEnabled = target->GetPropertyAsBool("AUTORCC");
-  const bool multiConfig = IsMultiConfig(target->GetGlobalGenerator());
-  const std::string autogenTargetName = GetAutogenTargetName(target);
-  const std::string autogenBuildDir = GetAutogenTargetBuildDir(target);
-  const std::string workingDirectory =
+  std::string const autogenTargetName = GetAutogenTargetName(target);
+  std::string const autogenInfoDir = GetAutogenTargetFilesDir(target);
+  std::string const autogenBuildDir = GetAutogenTargetBuildDir(target);
+  std::string const workingDirectory =
     cmSystemTools::CollapseFullPath("", makefile->GetCurrentBinaryDirectory());
-  const std::string qtMajorVersion = GetQtMajorVersion(target);
-  const std::string rccCommand = RccGetExecutable(target, qtMajorVersion);
-  const std::vector<std::string> suffixes = GetConfigurationSuffixes(makefile);
-  std::vector<std::string> autogenDependFiles;
-  std::vector<std::string> autogenDependTargets;
+
+  cmQtAutoGen::MultiConfig const multiConfig = AutogenMultiConfig(globalGen);
+  std::string configDefault;
+  std::vector<std::string> configsList;
+  GetConfigs(makefile, configDefault, configsList);
+
+  std::set<std::string> autogenDependFiles;
+  std::set<cmTarget*> autogenDependTargets;
   std::vector<std::string> autogenProvides;
 
   // Remove build directories on cleanup
-  makefile->AppendProperty("ADDITIONAL_MAKE_CLEAN_FILES",
-                           autogenBuildDir.c_str(), false);
-
+  AddCleanFile(makefile, autogenBuildDir);
   // Remove old settings on cleanup
   {
-    std::string base = GetAutogenTargetFilesDir(target);
-    for (std::vector<std::string>::const_iterator it = suffixes.begin();
-         it != suffixes.end(); ++it) {
-      std::string fname = base + "/AutogenOldSettings" + *it + ".cmake";
-      makefile->AppendProperty("ADDITIONAL_MAKE_CLEAN_FILES", fname.c_str(),
-                               false);
+    std::string base = autogenInfoDir + "/AutogenOldSettings";
+    if (multiConfig == cmQtAutoGen::SINGLE) {
+      AddCleanFile(makefile, base.append(".cmake"));
+    } else {
+      for (std::string const& cfg : configsList) {
+        std::string filename = base;
+        filename += "_";
+        filename += cfg;
+        filename += ".cmake";
+        AddCleanFile(makefile, filename);
+      }
     }
   }
 
@@ -745,7 +706,7 @@ void cmQtAutoGeneratorInitializer::InitializeAutogenTarget(
     currentLine.push_back(cmSystemTools::GetCMakeCommand());
     currentLine.push_back("-E");
     currentLine.push_back("cmake_autogen");
-    currentLine.push_back(GetAutogenTargetFilesDir(target));
+    currentLine.push_back(autogenInfoDir);
     currentLine.push_back("$<CONFIGURATION>");
     commandLines.push_back(currentLine);
   }
@@ -754,327 +715,477 @@ void cmQtAutoGeneratorInitializer::InitializeAutogenTarget(
   std::string autogenComment;
   {
     std::vector<std::string> toolNames;
-    if (mocEnabled) {
-      toolNames.push_back("MOC");
+    if (digest.MocEnabled) {
+      toolNames.emplace_back("MOC");
     }
-    if (uicEnabled) {
-      toolNames.push_back("UIC");
+    if (digest.UicEnabled) {
+      toolNames.emplace_back("UIC");
     }
-    if (rccEnabled) {
-      toolNames.push_back("RCC");
+    if (digest.RccEnabled) {
+      toolNames.emplace_back("RCC");
     }
 
-    std::string tools = toolNames[0];
+    std::string tools = toolNames.front();
     toolNames.erase(toolNames.begin());
-    while (toolNames.size() > 1) {
-      tools += ", " + toolNames[0];
-      toolNames.erase(toolNames.begin());
-    }
-    if (toolNames.size() == 1) {
-      tools += " and " + toolNames[0];
+    if (!toolNames.empty()) {
+      while (toolNames.size() > 1) {
+        tools += ", ";
+        tools += toolNames.front();
+        toolNames.erase(toolNames.begin());
+      }
+      tools += " and " + toolNames.front();
     }
     autogenComment = "Automatic " + tools + " for target " + target->GetName();
   }
 
   // Add moc compilation to generated files list
-  if (mocEnabled) {
-    for (std::vector<std::string>::const_iterator it = suffixes.begin();
-         it != suffixes.end(); ++it) {
-      std::string mcFile = autogenBuildDir + "/mocs_compilation";
-      mcFile += *it;
-      mcFile += ".cpp";
-      autogenProvides.push_back(mcFile);
+  if (digest.MocEnabled) {
+    std::string const mocsComp = autogenBuildDir + "/mocs_compilation.cpp";
+    auto files = AddGeneratedSource(target, mocsComp, multiConfig, configsList,
+                                    cmQtAutoGen::MOC);
+    for (std::string& file : files) {
+      autogenProvides.push_back(std::move(file));
     }
   }
 
   // Add autogen includes directory to the origin target INCLUDE_DIRECTORIES
-  if (mocEnabled || uicEnabled) {
-    if (multiConfig) {
-      target->AddIncludeDirectory(autogenBuildDir + "/include_$<CONFIG>",
-                                  true);
-
-    } else {
-      target->AddIncludeDirectory(autogenBuildDir + "/include", true);
+  if (digest.MocEnabled || digest.UicEnabled) {
+    std::string includeDir = autogenBuildDir + "/include";
+    if (multiConfig != cmQtAutoGen::SINGLE) {
+      includeDir += "_$<CONFIG>";
     }
+    target->AddIncludeDirectory(includeDir, true);
   }
 
-#if defined(_WIN32) && !defined(__CYGWIN__)
-  bool usePRE_BUILD = false;
-  cmGlobalGenerator* gg = lg->GetGlobalGenerator();
-  if (gg->GetName().find("Visual Studio") != std::string::npos) {
-    // Under VS use a PRE_BUILD event instead of a separate target to
-    // reduce the number of targets loaded into the IDE.
-    // This also works around a VS 11 bug that may skip updating the target:
-    //  https://connect.microsoft.com/VisualStudio/feedback/details/769495
-    usePRE_BUILD = true;
-  }
-#endif
-
-  // Initialize autogen target dependencies
-  if (const char* extraDeps = target->GetProperty("AUTOGEN_TARGET_DEPENDS")) {
-    std::vector<std::string> deps;
-    cmSystemTools::ExpandListArgument(extraDeps, deps);
-    for (std::vector<std::string>::const_iterator itC = deps.begin(),
-                                                  itE = deps.end();
-         itC != itE; ++itC) {
-      if (makefile->FindTargetToUse(*itC) != CM_NULLPTR) {
-        autogenDependTargets.push_back(*itC);
-      } else {
-        autogenDependFiles.push_back(*itC);
-      }
-    }
-  }
+  // Extract relevant source files
+  std::vector<std::string> generatedSources;
+  std::vector<std::string> generatedHeaders;
   {
-    cmFilePathChecksum fpathCheckSum(makefile);
-    // Iterate over all source files
+    std::string const qrcExt = "qrc";
     std::vector<cmSourceFile*> srcFiles;
     target->GetConfigCommonSourceFiles(srcFiles);
-    for (std::vector<cmSourceFile*>::const_iterator fileIt = srcFiles.begin();
-         fileIt != srcFiles.end(); ++fileIt) {
-      cmSourceFile* sf = *fileIt;
-      if (!PropertyEnabled(sf, "SKIP_AUTOGEN")) {
-        std::string const& ext = sf->GetExtension();
-        // Add generated file that will be scanned by moc or uic to
-        // the dependencies
-        if (mocEnabled || uicEnabled) {
-          const cmSystemTools::FileFormat fileType =
-            cmSystemTools::GetFileFormat(ext.c_str());
-          if ((fileType == cmSystemTools::CXX_FILE_FORMAT) ||
-              (fileType == cmSystemTools::HEADER_FILE_FORMAT)) {
-            if (PropertyEnabled(sf, "GENERATED")) {
-              if ((mocEnabled && !PropertyEnabled(sf, "SKIP_AUTOMOC")) ||
-                  (uicEnabled && !PropertyEnabled(sf, "SKIP_AUTOUIC"))) {
-                autogenDependFiles.push_back(
-                  cmsys::SystemTools::GetRealPath(sf->GetFullPath()));
-#if defined(_WIN32) && !defined(__CYGWIN__)
-                // Cannot use PRE_BUILD with generated files
-                usePRE_BUILD = false;
-#endif
+    for (cmSourceFile* sf : srcFiles) {
+      if (sf->GetPropertyAsBool("SKIP_AUTOGEN")) {
+        continue;
+      }
+      // sf->GetExtension() is only valid after sf->GetFullPath() ...
+      std::string const& fPath = sf->GetFullPath();
+      std::string const& ext = sf->GetExtension();
+      // Register generated files that will be scanned by moc or uic
+      if (digest.MocEnabled || digest.UicEnabled) {
+        cmSystemTools::FileFormat const fileType =
+          cmSystemTools::GetFileFormat(ext.c_str());
+        if ((fileType == cmSystemTools::CXX_FILE_FORMAT) ||
+            (fileType == cmSystemTools::HEADER_FILE_FORMAT)) {
+          std::string const absPath = cmSystemTools::GetRealPath(fPath);
+          if ((digest.MocEnabled && !sf->GetPropertyAsBool("SKIP_AUTOMOC")) ||
+              (digest.UicEnabled && !sf->GetPropertyAsBool("SKIP_AUTOUIC"))) {
+            // Register source
+            const bool generated = sf->GetPropertyAsBool("GENERATED");
+            if (fileType == cmSystemTools::HEADER_FILE_FORMAT) {
+              if (generated) {
+                generatedHeaders.push_back(absPath);
+              } else {
+                digest.Headers.push_back(absPath);
+              }
+            } else {
+              if (generated) {
+                generatedSources.push_back(absPath);
+              } else {
+                digest.Sources.push_back(absPath);
               }
             }
           }
         }
-        // Process rcc enabled files
-        if (rccEnabled && (ext == "qrc") &&
-            !PropertyEnabled(sf, "SKIP_AUTORCC")) {
-          const std::string absFile =
-            cmsys::SystemTools::GetRealPath(sf->GetFullPath());
-
-          // Compose rcc output file name
+      }
+      // Register rcc enabled files
+      if (digest.RccEnabled && (ext == qrcExt) &&
+          !sf->GetPropertyAsBool("SKIP_AUTORCC")) {
+        // Register qrc file
+        {
+          cmQtAutoGenDigestQrc qrcDigest;
+          qrcDigest.QrcFile = cmSystemTools::GetRealPath(fPath);
+          qrcDigest.QrcName =
+            cmSystemTools::GetFilenameWithoutLastExtension(qrcDigest.QrcFile);
+          qrcDigest.Generated = sf->GetPropertyAsBool("GENERATED");
+          // RCC options
           {
-            std::string rccOutBase = autogenBuildDir + "/";
-            rccOutBase += fpathCheckSum.getPart(absFile);
-            rccOutBase += "/qrc_";
-            rccOutBase +=
-              cmsys::SystemTools::GetFilenameWithoutLastExtension(absFile);
-
-            // Register rcc ouput file as generated
-            for (std::vector<std::string>::const_iterator it =
-                   suffixes.begin();
-                 it != suffixes.end(); ++it) {
-              std::string rccOutCfg = rccOutBase;
-              rccOutCfg += *it;
-              rccOutCfg += ".cpp";
-              AddGeneratedSource(makefile, rccOutCfg,
-                                 cmQtAutoGeneratorCommon::RCC);
-              autogenProvides.push_back(rccOutCfg);
-            }
-            // Add rcc output file to origin target sources
-            if (multiConfig) {
-              target->AddSource(rccOutBase + "_$<CONFIG>.cpp");
-            } else {
-              target->AddSource(rccOutBase + ".cpp");
+            std::string const opts = GetSafeProperty(sf, "AUTORCC_OPTIONS");
+            if (!opts.empty()) {
+              cmSystemTools::ExpandListArgument(opts, qrcDigest.Options);
             }
           }
+          digest.Qrcs.push_back(std::move(qrcDigest));
+        }
+      }
+    }
+    // cmGeneratorTarget::GetConfigCommonSourceFiles computes the target's
+    // sources meta data cache. Clear it so that OBJECT library targets that
+    // are AUTOGEN initialized after this target get their added
+    // mocs_compilation.cpp source acknowledged by this target.
+    target->ClearSourcesCache();
+  }
 
-          if (PropertyEnabled(sf, "GENERATED")) {
-            // Add generated qrc file to the dependencies
-            autogenDependFiles.push_back(absFile);
-          } else {
-            // Run cmake again when .qrc file changes
-            makefile->AddCMakeDependFile(absFile);
-
-            // Add the qrc input files to the dependencies
-            std::string error;
-            if (!cmQtAutoGeneratorCommon::RccListInputs(
-                  qtMajorVersion, rccCommand, absFile, autogenDependFiles,
-                  &error)) {
-              cmSystemTools::Error(error.c_str());
+  // Process GENERATED sources and headers
+  if (!generatedSources.empty() || !generatedHeaders.empty()) {
+    // Check status of policy CMP0071
+    bool policyAccept = false;
+    bool policyWarn = false;
+    cmPolicies::PolicyStatus const CMP0071_status =
+      target->Makefile->GetPolicyStatus(cmPolicies::CMP0071);
+    switch (CMP0071_status) {
+      case cmPolicies::WARN:
+        policyWarn = true;
+        CM_FALLTHROUGH;
+      case cmPolicies::OLD:
+        // Ignore GENERATED file
+        break;
+      case cmPolicies::REQUIRED_IF_USED:
+      case cmPolicies::REQUIRED_ALWAYS:
+      case cmPolicies::NEW:
+        // Process GENERATED file
+        policyAccept = true;
+        break;
+    }
+
+    if (policyAccept) {
+      // Accept GENERATED sources
+      for (std::string const& absFile : generatedHeaders) {
+        digest.Headers.push_back(absFile);
+        autogenDependFiles.insert(absFile);
+      }
+      for (std::string const& absFile : generatedSources) {
+        digest.Sources.push_back(absFile);
+        autogenDependFiles.insert(absFile);
+      }
+    } else {
+      if (policyWarn) {
+        std::string msg;
+        msg += cmPolicies::GetPolicyWarning(cmPolicies::CMP0071);
+        msg += "\n";
+        std::string tools;
+        std::string property;
+        if (digest.MocEnabled && digest.UicEnabled) {
+          tools = "AUTOMOC and AUTOUIC";
+          property = "SKIP_AUTOGEN";
+        } else if (digest.MocEnabled) {
+          tools = "AUTOMOC";
+          property = "SKIP_AUTOMOC";
+        } else if (digest.UicEnabled) {
+          tools = "AUTOUIC";
+          property = "SKIP_AUTOUIC";
+        }
+        msg += "For compatibility, CMake is excluding the GENERATED source "
+               "file(s):\n";
+        for (const std::string& absFile : generatedHeaders) {
+          msg.append("  ").append(cmQtAutoGen::Quoted(absFile)).append("\n");
+        }
+        for (const std::string& absFile : generatedSources) {
+          msg.append("  ").append(cmQtAutoGen::Quoted(absFile)).append("\n");
+        }
+        msg += "from processing by ";
+        msg += tools;
+        msg +=
+          ". If any of the files should be processed, set CMP0071 to NEW. "
+          "If any of the files should not be processed, "
+          "explicitly exclude them by setting the source file property ";
+        msg += property;
+        msg += ":\n  set_property(SOURCE file.h PROPERTY ";
+        msg += property;
+        msg += " ON)\n";
+        makefile->IssueMessage(cmake::AUTHOR_WARNING, msg);
+      }
+    }
+  }
+  // Sort headers and sources
+  std::sort(digest.Headers.begin(), digest.Headers.end());
+  std::sort(digest.Sources.begin(), digest.Sources.end());
+
+  // Process qrc files
+  if (!digest.Qrcs.empty()) {
+    const bool QtV5 = (digest.QtVersionMajor == "5");
+    std::string const rcc = RccGetExecutable(target, digest.QtVersionMajor);
+    // Target rcc options
+    std::vector<std::string> optionsTarget;
+    cmSystemTools::ExpandListArgument(
+      GetSafeProperty(target, "AUTORCC_OPTIONS"), optionsTarget);
+
+    // Check if file name is unique
+    for (cmQtAutoGenDigestQrc& qrcDigest : digest.Qrcs) {
+      qrcDigest.Unique = true;
+      for (cmQtAutoGenDigestQrc const& qrcDig2 : digest.Qrcs) {
+        if ((&qrcDigest != &qrcDig2) &&
+            (qrcDigest.QrcName == qrcDig2.QrcName)) {
+          qrcDigest.Unique = false;
+          break;
+        }
+      }
+    }
+    // Path checksum
+    {
+      cmFilePathChecksum const fpathCheckSum(makefile);
+      for (cmQtAutoGenDigestQrc& qrcDigest : digest.Qrcs) {
+        qrcDigest.PathChecksum = fpathCheckSum.getPart(qrcDigest.QrcFile);
+        // RCC output file name
+        std::string rccFile = autogenBuildDir + "/";
+        rccFile += qrcDigest.PathChecksum;
+        rccFile += "/qrc_";
+        rccFile += qrcDigest.QrcName;
+        rccFile += ".cpp";
+        qrcDigest.RccFile = std::move(rccFile);
+      }
+    }
+    // RCC options
+    for (cmQtAutoGenDigestQrc& qrcDigest : digest.Qrcs) {
+      // Target options
+      std::vector<std::string> opts = optionsTarget;
+      // Merge computed "-name XYZ" option
+      {
+        std::string name = qrcDigest.QrcName;
+        // Replace '-' with '_'. The former is not valid for symbol names.
+        std::replace(name.begin(), name.end(), '-', '_');
+        if (!qrcDigest.Unique) {
+          name += "_";
+          name += qrcDigest.PathChecksum;
+        }
+        std::vector<std::string> nameOpts;
+        nameOpts.emplace_back("-name");
+        nameOpts.emplace_back(std::move(name));
+        cmQtAutoGen::RccMergeOptions(opts, nameOpts, QtV5);
+      }
+      // Merge file option
+      cmQtAutoGen::RccMergeOptions(opts, qrcDigest.Options, QtV5);
+      qrcDigest.Options = std::move(opts);
+    }
+    for (cmQtAutoGenDigestQrc& qrcDigest : digest.Qrcs) {
+      // Register file at target
+      {
+        auto files = AddGeneratedSource(target, qrcDigest.RccFile, multiConfig,
+                                        configsList, cmQtAutoGen::RCC);
+        for (std::string& file : files) {
+          autogenProvides.push_back(std::move(file));
+        }
+      }
+      // Dependencies
+      if (qrcDigest.Generated) {
+        // Add the GENERATED .qrc file to the dependencies
+        autogenDependFiles.insert(qrcDigest.QrcFile);
+      } else {
+        // Add the resource files to the dependencies
+        {
+          std::string error;
+          if (cmQtAutoGen::RccListInputs(digest.QtVersionMajor, rcc,
+                                         qrcDigest.QrcFile,
+                                         qrcDigest.Resources, &error)) {
+            for (std::string const& fileName : qrcDigest.Resources) {
+              autogenDependFiles.insert(fileName);
             }
+          } else {
+            cmSystemTools::Error(error.c_str());
           }
-#if defined(_WIN32) && !defined(__CYGWIN__)
-          // Cannot use PRE_BUILD because the resource files themselves
-          // may not be sources within the target so VS may not know the
-          // target needs to re-build at all.
-          usePRE_BUILD = false;
-#endif
         }
+        // Run cmake again when .qrc file changes
+        makefile->AddCMakeDependFile(qrcDigest.QrcFile);
       }
     }
   }
 
-#if defined(_WIN32) && !defined(__CYGWIN__)
+  // Add user defined autogen target dependencies
+  {
+    std::string const deps = GetSafeProperty(target, "AUTOGEN_TARGET_DEPENDS");
+    if (!deps.empty()) {
+      std::vector<std::string> extraDeps;
+      cmSystemTools::ExpandListArgument(deps, extraDeps);
+      for (std::string const& depName : extraDeps) {
+        // Allow target and file dependencies
+        auto* depTarget = makefile->FindTargetToUse(depName);
+        if (depTarget != nullptr) {
+          autogenDependTargets.insert(depTarget);
+        } else {
+          autogenDependFiles.insert(depName);
+        }
+      }
+    }
+  }
+
+  // Use PRE_BUILD on demand
+  bool usePRE_BUILD = false;
+  if (globalGen->GetName().find("Visual Studio") != std::string::npos) {
+    // Under VS use a PRE_BUILD event instead of a separate target to
+    // reduce the number of targets loaded into the IDE.
+    // This also works around a VS 11 bug that may skip updating the target:
+    //  https://connect.microsoft.com/VisualStudio/feedback/details/769495
+    usePRE_BUILD = true;
+  }
+  // Disable PRE_BUILD in some cases
   if (usePRE_BUILD) {
-    // We can't use pre-build if we depend on additional files
+    // Cannot use PRE_BUILD with file depends
     if (!autogenDependFiles.empty()) {
       usePRE_BUILD = false;
     }
   }
+  // Create the autogen target/command
   if (usePRE_BUILD) {
+    // Add additional autogen target dependencies to origin target
+    for (cmTarget* depTarget : autogenDependTargets) {
+      target->Target->AddUtility(depTarget->GetName(), makefile);
+    }
+
     // Add the pre-build command directly to bypass the OBJECT_LIBRARY
     // rejection in cmMakefile::AddCustomCommandToTarget because we know
     // PRE_BUILD will work for an OBJECT_LIBRARY in this specific case.
-    std::vector<std::string> no_output;
-    std::vector<std::string> no_depends;
-    cmCustomCommand cc(makefile, no_output, autogenProvides, no_depends,
+    //
+    // PRE_BUILD does not support file dependencies!
+    const std::vector<std::string> no_output;
+    const std::vector<std::string> no_deps;
+    cmCustomCommand cc(makefile, no_output, autogenProvides, no_deps,
                        commandLines, autogenComment.c_str(),
                        workingDirectory.c_str());
     cc.SetEscapeOldStyle(false);
     cc.SetEscapeAllowMakeVars(true);
     target->Target->AddPreBuildCommand(cc);
+  } else {
 
-    // Add additional target dependencies to the origin target
-    for (std::vector<std::string>::const_iterator
-           itC = autogenDependTargets.begin(),
-           itE = autogenDependTargets.end();
-         itC != itE; ++itC) {
-      target->Target->AddUtility(*itC);
+    // Convert file dependencies std::set to std::vector
+    std::vector<std::string> autogenDepends(autogenDependFiles.begin(),
+                                            autogenDependFiles.end());
+
+    // Add link library target dependencies to the autogen target dependencies
+    for (std::string const& config : configsList) {
+      cmLinkImplementationLibraries const* libs =
+        target->GetLinkImplementationLibraries(config);
+      if (libs != nullptr) {
+        for (cmLinkItem const& item : libs->Libraries) {
+          cmGeneratorTarget const* libTarget = item.Target;
+          if ((libTarget != nullptr) &&
+              !StaticLibraryCycle(target, libTarget, config)) {
+            std::string util;
+            if (configsList.size() > 1) {
+              util += "$<$<CONFIG:";
+              util += config;
+              util += ">:";
+            }
+            util += libTarget->GetName();
+            if (configsList.size() > 1) {
+              util += ">";
+            }
+            autogenDepends.push_back(util);
+          }
+        }
+      }
     }
-  } else
-#endif
-  {
+
+    // Create autogen target
     cmTarget* autogenTarget = makefile->AddUtilityCommand(
       autogenTargetName, true, workingDirectory.c_str(),
-      /*byproducts=*/autogenProvides, autogenDependFiles, commandLines, false,
+      /*byproducts=*/autogenProvides, autogenDepends, commandLines, false,
       autogenComment.c_str());
+    // Create autogen generator target
+    localGen->AddGeneratorTarget(
+      new cmGeneratorTarget(autogenTarget, localGen));
 
-    cmGeneratorTarget* gt = new cmGeneratorTarget(autogenTarget, lg);
-    lg->AddGeneratorTarget(gt);
+    // Forward origin utilities to autogen target
+    for (std::string const& depName : target->Target->GetUtilities()) {
+      autogenTarget->AddUtility(depName, makefile);
+    }
+    // Add additional autogen target dependencies to autogen target
+    for (cmTarget* depTarget : autogenDependTargets) {
+      autogenTarget->AddUtility(depTarget->GetName(), makefile);
+    }
 
-    // Add origin link library targets to the autogen target dependencies
+    // Set FOLDER property in autogen target
     {
-      const cmTarget::LinkLibraryVectorType& libVec =
-        target->Target->GetOriginalLinkLibraries();
-      for (cmTarget::LinkLibraryVectorType::const_iterator
-             itC = libVec.begin(),
-             itE = libVec.end();
-           itC != itE; ++itC) {
-        const std::string& libName = itC->first;
-        if (makefile->FindTargetToUse(libName) != CM_NULLPTR) {
-          autogenDependTargets.push_back(libName);
-        }
+      const char* autogenFolder =
+        makefile->GetState()->GetGlobalProperty("AUTOMOC_TARGETS_FOLDER");
+      if (autogenFolder == nullptr) {
+        autogenFolder =
+          makefile->GetState()->GetGlobalProperty("AUTOGEN_TARGETS_FOLDER");
       }
-    }
-    // Add origin utility targets to the autogen target dependencies
-    {
-      const std::set<std::string>& utils = target->Target->GetUtilities();
-      for (std::set<std::string>::const_iterator itC = utils.begin(),
-                                                 itE = utils.end();
-           itC != itE; ++itC) {
-        autogenDependTargets.push_back(*itC);
+      // Inherit FOLDER property from target (#13688)
+      if (autogenFolder == nullptr) {
+        autogenFolder = SafeString(target->Target->GetProperty("FOLDER"));
+      }
+      if ((autogenFolder != nullptr) && (*autogenFolder != '\0')) {
+        autogenTarget->SetProperty("FOLDER", autogenFolder);
       }
-    }
-    // Add additional target dependencies to the autogen target
-    for (std::vector<std::string>::const_iterator
-           itC = autogenDependTargets.begin(),
-           itE = autogenDependTargets.end();
-         itC != itE; ++itC) {
-      autogenTarget->AddUtility(*itC);
-    }
-
-    // Set target folder
-    const char* autogenFolder =
-      makefile->GetState()->GetGlobalProperty("AUTOMOC_TARGETS_FOLDER");
-    if (!autogenFolder) {
-      autogenFolder =
-        makefile->GetState()->GetGlobalProperty("AUTOGEN_TARGETS_FOLDER");
-    }
-    if (autogenFolder && *autogenFolder) {
-      autogenTarget->SetProperty("FOLDER", autogenFolder);
-    } else {
-      // inherit FOLDER property from target (#13688)
-      utilCopyTargetProperty(gt->Target, target->Target, "FOLDER");
     }
 
-    target->Target->AddUtility(autogenTargetName);
+    // Add autogen target to the origin target dependencies
+    target->Target->AddUtility(autogenTargetName, makefile);
   }
 }
 
 void cmQtAutoGeneratorInitializer::SetupAutoGenerateTarget(
-  cmGeneratorTarget const* target)
+  cmQtAutoGenDigest const& digest)
 {
+  cmGeneratorTarget const* target = digest.Target;
   cmMakefile* makefile = target->Target->GetMakefile();
+  cmQtAutoGen::MultiConfig const multiConfig =
+    AutogenMultiConfig(target->GetGlobalGenerator());
 
   // forget the variables added here afterwards again:
   cmMakefile::ScopePushPop varScope(makefile);
   static_cast<void>(varScope);
 
-  // Get configurations
-  std::string config;
-  const std::vector<std::string> configs(GetConfigurations(makefile, &config));
-
-  // Configurations settings buffers
-  std::map<std::string, std::string> configSuffix;
-  std::map<std::string, std::string> configMocIncludes;
-  std::map<std::string, std::string> configMocDefines;
-  std::map<std::string, std::string> configUicOptions;
-
-  // Configuration suffix
-  if (IsMultiConfig(target->GetGlobalGenerator())) {
-    for (std::vector<std::string>::const_iterator it = configs.begin();
-         it != configs.end(); ++it) {
-      configSuffix[*it] = "_" + *it;
+  // Configurations
+  std::string configDefault;
+  std::vector<std::string> configsList;
+  std::map<std::string, std::string> configSuffixes;
+  {
+    configDefault = makefile->GetConfigurations(configsList);
+    if (configsList.empty()) {
+      configsList.push_back("");
     }
   }
+  for (std::string const& cfg : configsList) {
+    configSuffixes[cfg] = "_" + cfg;
+  }
+
+  // Configurations settings buffers
+  cmQtAutoGenSetup setup;
 
   // Basic setup
+  AddDefinitionEscaped(makefile, "_multi_config",
+                       cmQtAutoGen::MultiConfigName(multiConfig));
+  AddDefinitionEscaped(makefile, "_build_dir",
+                       GetAutogenTargetBuildDir(target));
+  AddDefinitionEscaped(makefile, "_sources", digest.Sources);
+  AddDefinitionEscaped(makefile, "_headers", digest.Headers);
+  AddDefinitionEscaped(makefile, "_qt_version_major", digest.QtVersionMajor);
+  AddDefinitionEscaped(makefile, "_qt_version_minor", digest.QtVersionMinor);
   {
-    const bool mocEnabled = target->GetPropertyAsBool("AUTOMOC");
-    const bool uicEnabled = target->GetPropertyAsBool("AUTOUIC");
-    const bool rccEnabled = target->GetPropertyAsBool("AUTORCC");
-    const std::string autogenTargetName = GetAutogenTargetName(target);
-    const std::string qtMajorVersion = GetQtMajorVersion(target);
-
-    std::vector<std::string> sources;
-    std::vector<std::string> headers;
-
-    if (mocEnabled || uicEnabled || rccEnabled) {
-      std::vector<std::string> mocSkipList;
-      std::vector<std::string> uicSkipList;
-      AcquireScanFiles(target, sources, headers, mocSkipList, uicSkipList);
-      if (mocEnabled) {
-        MocSetupAutoTarget(target, autogenTargetName, qtMajorVersion, config,
-                           configs, mocSkipList, configMocIncludes,
-                           configMocDefines);
-      }
-      if (uicEnabled) {
-        UicSetupAutoTarget(target, qtMajorVersion, config, configs,
-                           uicSkipList, configUicOptions);
+    if (digest.MocEnabled || digest.UicEnabled) {
+      SetupAcquireSkipFiles(digest, setup);
+      if (digest.MocEnabled) {
+        SetupAutoTargetMoc(digest, configDefault, configsList, setup);
       }
-      if (rccEnabled) {
-        RccSetupAutoTarget(target, qtMajorVersion);
+      if (digest.UicEnabled) {
+        SetupAutoTargetUic(digest, configDefault, configsList, setup);
       }
     }
-
-    AddDefinitionEscaped(makefile, "_autogen_build_dir",
-                         GetAutogenTargetBuildDir(target));
-    AddDefinitionEscaped(makefile, "_qt_version_major", qtMajorVersion);
-    AddDefinitionEscaped(makefile, "_sources", sources);
-    AddDefinitionEscaped(makefile, "_headers", headers);
+    if (digest.RccEnabled) {
+      SetupAutoTargetRcc(digest);
+    }
   }
 
   // Generate info file
-  std::string infoFile = GetAutogenTargetFilesDir(target);
-  infoFile += "/AutogenInfo.cmake";
   {
-    std::string inf = cmSystemTools::GetCMakeRoot();
-    inf += "/Modules/AutogenInfo.cmake.in";
-    makefile->ConfigureFile(inf.c_str(), infoFile.c_str(), false, true, false);
-  }
+    std::string const infoDir = GetAutogenTargetFilesDir(target);
+    if (!cmSystemTools::MakeDirectory(infoDir)) {
+      std::string emsg = ("Could not create directory: ");
+      emsg += cmQtAutoGen::Quoted(infoDir);
+      cmSystemTools::Error(emsg.c_str());
+    }
+    std::string const infoFile = infoDir + "/AutogenInfo.cmake";
+    {
+      std::string infoFileIn = cmSystemTools::GetCMakeRoot();
+      infoFileIn += "/Modules/AutogenInfo.cmake.in";
+      makefile->ConfigureFile(infoFileIn.c_str(), infoFile.c_str(), false,
+                              true, false);
+    }
 
-  // Append custom definitions to info file on demand
-  if (!configSuffix.empty() || !configMocDefines.empty() ||
-      !configMocIncludes.empty() || !configUicOptions.empty()) {
+    // Append custom definitions to info file
+    // --------------------------------------
 
     // Ensure we have write permission in case .in was read-only.
     mode_t perm = 0;
@@ -1091,39 +1202,22 @@ void cmQtAutoGeneratorInitializer::SetupAutoGenerateTarget(
     // Open and write file
     cmsys::ofstream ofs(infoFile.c_str(), std::ios::app);
     if (ofs) {
-      ofs << "# Configuration specific options\n";
-      for (std::map<std::string, std::string>::iterator
-             it = configSuffix.begin(),
-             end = configSuffix.end();
-           it != end; ++it) {
-        ofs << "set(AM_CONFIG_SUFFIX_" << it->first << " " << it->second
-            << ")\n";
-      }
-      for (std::map<std::string, std::string>::iterator
-             it = configMocDefines.begin(),
-             end = configMocDefines.end();
-           it != end; ++it) {
-        ofs << "set(AM_MOC_DEFINITIONS_" << it->first << " " << it->second
-            << ")\n";
-      }
-      for (std::map<std::string, std::string>::iterator
-             it = configMocIncludes.begin(),
-             end = configMocIncludes.end();
-           it != end; ++it) {
-        ofs << "set(AM_MOC_INCLUDES_" << it->first << " " << it->second
-            << ")\n";
-      }
-      for (std::map<std::string, std::string>::iterator
-             it = configUicOptions.begin(),
-             end = configUicOptions.end();
-           it != end; ++it) {
-        ofs << "set(AM_UIC_TARGET_OPTIONS_" << it->first << " " << it->second
-            << ")\n";
-      }
+      auto OfsWriteMap = [&ofs](
+        const char* key, std::map<std::string, std::string> const& map) {
+        for (auto const& item : map) {
+          ofs << "set(" << key << "_" << item.first << " "
+              << cmOutputConverter::EscapeForCMake(item.second) << ")\n";
+        }
+      };
+      ofs << "# Configurations options\n";
+      OfsWriteMap("AM_CONFIG_SUFFIX", configSuffixes);
+      OfsWriteMap("AM_MOC_DEFINITIONS", setup.ConfigMocDefines);
+      OfsWriteMap("AM_MOC_INCLUDES", setup.ConfigMocIncludes);
+      OfsWriteMap("AM_UIC_TARGET_OPTIONS", setup.ConfigUicOptions);
     } else {
       // File open error
       std::string error = "Internal CMake error when trying to open file: ";
-      error += cmQtAutoGeneratorCommon::Quoted(infoFile);
+      error += cmQtAutoGen::Quoted(infoFile);
       error += " for writing.";
       cmSystemTools::Error(error.c_str());
     }
diff --git a/Source/cmQtAutoGeneratorInitializer.h b/Source/cmQtAutoGeneratorInitializer.h
index ca806f5a9..b8a5ae480 100644
--- a/Source/cmQtAutoGeneratorInitializer.h
+++ b/Source/cmQtAutoGeneratorInitializer.h
@@ -4,17 +4,21 @@
 #define cmQtAutoGeneratorInitializer_h
 
 #include "cmConfigure.h" // IWYU pragma: keep
+#include "cmQtAutoGenDigest.h"
+
+#include <string>
 
 class cmGeneratorTarget;
-class cmLocalGenerator;
 
 class cmQtAutoGeneratorInitializer
 {
 public:
-  static void InitializeAutogenSources(cmGeneratorTarget* target);
-  static void InitializeAutogenTarget(cmLocalGenerator* lg,
-                                      cmGeneratorTarget* target);
-  static void SetupAutoGenerateTarget(cmGeneratorTarget const* target);
+  static std::string GetQtMajorVersion(cmGeneratorTarget const* target);
+  static std::string GetQtMinorVersion(cmGeneratorTarget const* target,
+                                       std::string const& qtVersionMajor);
+
+  static void InitializeAutogenTarget(cmQtAutoGenDigest& digest);
+  static void SetupAutoGenerateTarget(cmQtAutoGenDigest const& digest);
 };
 
 #endif
diff --git a/Source/cmQtAutoGenerators.cxx b/Source/cmQtAutoGenerators.cxx
index c3ecb51b8..b329d3828 100644
--- a/Source/cmQtAutoGenerators.cxx
+++ b/Source/cmQtAutoGenerators.cxx
@@ -1,16 +1,15 @@
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
+#include "cmQtAutoGen.h"
 #include "cmQtAutoGenerators.h"
-#include "cmQtAutoGeneratorCommon.h"
 
-#include "cmConfigure.h"
 #include "cmsys/FStream.hxx"
 #include "cmsys/Terminal.h"
 #include <algorithm>
-#include <assert.h>
+#include <array>
 #include <list>
+#include <memory>
 #include <sstream>
-#include <stdlib.h>
 #include <string.h>
 #include <utility>
 
@@ -23,7 +22,6 @@
 #include "cmStateDirectory.h"
 #include "cmStateSnapshot.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
 #if defined(__APPLE__)
@@ -38,253 +36,119 @@ static const char* SettingsKeyRcc = "AM_RCC_SETTINGS_HASH";
 
 // -- Static functions
 
-inline static std::string Quoted(const std::string& text)
+static std::string HeadLine(std::string const& title)
 {
-  return cmQtAutoGeneratorCommon::Quoted(text);
+  std::string head = title;
+  head += '\n';
+  head.append(head.size() - 1, '-');
+  head += '\n';
+  return head;
 }
 
-static std::string QuotedCommand(const std::vector<std::string>& command)
+static std::string QuotedCommand(std::vector<std::string> const& command)
 {
   std::string res;
-  for (std::vector<std::string>::const_iterator cit = command.begin();
-       cit != command.end(); ++cit) {
+  for (std::string const& item : command) {
     if (!res.empty()) {
       res.push_back(' ');
     }
-    const std::string cesc = Quoted(*cit);
-    if (cit->empty() || (cesc.size() > (cit->size() + 2)) ||
+    std::string const cesc = cmQtAutoGen::Quoted(item);
+    if (item.empty() || (cesc.size() > (item.size() + 2)) ||
         (cesc.find(' ') != std::string::npos)) {
       res += cesc;
     } else {
-      res += *cit;
+      res += item;
     }
   }
   return res;
 }
 
-static void InfoGet(cmMakefile* makefile, const char* key, std::string& value)
+static std::string SubDirPrefix(std::string const& fileName)
 {
-  value = makefile->GetSafeDefinition(key);
-}
-
-static void InfoGet(cmMakefile* makefile, const char* key, bool& value)
-{
-  value = makefile->IsOn(key);
-}
-
-static void InfoGet(cmMakefile* makefile, const char* key,
-                    std::vector<std::string>& list)
-{
-  cmSystemTools::ExpandListArgument(makefile->GetSafeDefinition(key), list);
-}
-
-static void InfoGetConfig(cmMakefile* makefile, const char* key,
-                          const std::string& config, std::string& value)
-{
-  const char* valueConf = CM_NULLPTR;
-  {
-    std::string keyConf = key;
-    if (!config.empty()) {
-      keyConf += "_";
-      keyConf += config;
-    }
-    valueConf = makefile->GetDefinition(keyConf);
-  }
-  if (valueConf == CM_NULLPTR) {
-    valueConf = makefile->GetSafeDefinition(key);
-  }
-  value = valueConf;
-}
-
-static void InfoGetConfig(cmMakefile* makefile, const char* key,
-                          const std::string& config,
-                          std::vector<std::string>& list)
-{
-  std::string value;
-  InfoGetConfig(makefile, key, config, value);
-  cmSystemTools::ExpandListArgument(value, list);
-}
-
-inline static bool SettingsMatch(cmMakefile* makefile, const char* key,
-                                 const std::string& value)
-{
-  return (value == makefile->GetSafeDefinition(key));
-}
-
-static void SettingAppend(std::string& str, const char* key,
-                          const std::string& value)
-{
-  if (!value.empty()) {
-    str += "set(";
-    str += key;
-    str += " ";
-    str += cmOutputConverter::EscapeForCMake(value);
-    str += ")\n";
-  }
-}
-
-static std::string SubDirPrefix(const std::string& fileName)
-{
-  std::string res(cmsys::SystemTools::GetFilenamePath(fileName));
+  std::string res(cmSystemTools::GetFilenamePath(fileName));
   if (!res.empty()) {
     res += '/';
   }
   return res;
 }
 
-static bool FileNameIsUnique(const std::string& filePath,
-                             const std::map<std::string, std::string>& fileMap)
-{
-  size_t count(0);
-  const std::string fileName = cmsys::SystemTools::GetFilenameName(filePath);
-  for (std::map<std::string, std::string>::const_iterator si = fileMap.begin();
-       si != fileMap.end(); ++si) {
-    if (cmsys::SystemTools::GetFilenameName(si->first) == fileName) {
-      ++count;
-      if (count > 1) {
-        return false;
-      }
-    }
-  }
-  return true;
-}
-
-static bool ReadAll(std::string& content, const std::string& filename)
+static bool ReadFile(std::string& content, std::string const& filename,
+                     std::string* error = nullptr)
 {
   bool success = false;
-  {
-    cmsys::ifstream ifs(filename.c_str());
+  if (cmSystemTools::FileExists(filename)) {
+    std::size_t const length = cmSystemTools::FileLength(filename);
+    cmsys::ifstream ifs(filename.c_str(), (std::ios::in | std::ios::binary));
     if (ifs) {
-      std::ostringstream osst;
-      osst << ifs.rdbuf();
-      content = osst.str();
-      success = true;
+      content.resize(length);
+      ifs.read(&content.front(), content.size());
+      if (ifs) {
+        success = true;
+      } else {
+        content.clear();
+        if (error != nullptr) {
+          error->append("Reading from the file failed.");
+        }
+      }
+    } else if (error != nullptr) {
+      error->append("Opening the file for reading failed.");
     }
+  } else if (error != nullptr) {
+    error->append("The file does not exist.");
   }
   return success;
 }
 
 /**
- * @brief Tests if buildFile doesn't exist or is older than sourceFile
- * @return True if buildFile doesn't exist or is older than sourceFile
+ * @brief Tests if buildFile is older than sourceFile
+ * @return True if buildFile  is older than sourceFile.
+ *         False may indicate an error.
  */
-static bool FileAbsentOrOlder(const std::string& buildFile,
-                              const std::string& sourceFile)
+static bool FileIsOlderThan(std::string const& buildFile,
+                            std::string const& sourceFile,
+                            std::string* error = nullptr)
 {
   int result = 0;
-  bool success =
-    cmsys::SystemTools::FileTimeCompare(buildFile, sourceFile, &result);
-  return (!success || (result <= 0));
-}
-
-static bool ListContains(const std::vector<std::string>& list,
-                         const std::string& entry)
-{
-  return (std::find(list.begin(), list.end(), entry) != list.end());
-}
-
-static std::string JoinOptionsList(const std::vector<std::string>& opts)
-{
-  return cmOutputConverter::EscapeForCMake(cmJoin(opts, ";"));
-}
-
-static std::string JoinOptionsMap(
-  const std::map<std::string, std::string>& opts)
-{
-  std::string result;
-  for (std::map<std::string, std::string>::const_iterator it = opts.begin();
-       it != opts.end(); ++it) {
-    if (it != opts.begin()) {
-      result += cmQtAutoGeneratorCommon::listSep;
-    }
-    result += it->first;
-    result += "===";
-    result += it->second;
+  if (cmSystemTools::FileTimeCompare(buildFile, sourceFile, &result)) {
+    return (result < 0);
   }
-  return result;
-}
-
-static std::string JoinExts(const std::vector<std::string>& lst)
-{
-  std::string result;
-  if (!lst.empty()) {
-    const std::string separator = ",";
-    for (std::vector<std::string>::const_iterator it = lst.begin();
-         it != lst.end(); ++it) {
-      if (it != lst.begin()) {
-        result += separator;
-      }
-      result += '.';
-      result += *it;
-    }
+  if (error != nullptr) {
+    error->append(
+      "File modification time comparison failed for the files\n  ");
+    error->append(cmQtAutoGen::Quoted(buildFile));
+    error->append("\nand\n  ");
+    error->append(cmQtAutoGen::Quoted(sourceFile));
   }
-  return result;
+  return false;
 }
 
-static void UicMergeOptions(std::vector<std::string>& opts,
-                            const std::vector<std::string>& fileOpts,
-                            bool isQt5)
+static bool ListContains(std::vector<std::string> const& list,
+                         std::string const& entry)
 {
-  static const char* valueOptions[] = { "tr",      "translate",
-                                        "postfix", "generator",
-                                        "include", // Since Qt 5.3
-                                        "g" };
-  std::vector<std::string> extraOpts;
-  for (std::vector<std::string>::const_iterator it = fileOpts.begin();
-       it != fileOpts.end(); ++it) {
-    std::vector<std::string>::iterator existingIt =
-      std::find(opts.begin(), opts.end(), *it);
-    if (existingIt != opts.end()) {
-      const char* o = it->c_str();
-      if (*o == '-') {
-        ++o;
-      }
-      if (isQt5 && *o == '-') {
-        ++o;
-      }
-      if (std::find_if(cmArrayBegin(valueOptions), cmArrayEnd(valueOptions),
-                       cmStrCmp(*it)) != cmArrayEnd(valueOptions)) {
-        assert(existingIt + 1 != opts.end());
-        *(existingIt + 1) = *(it + 1);
-        ++it;
-      }
-    } else {
-      extraOpts.push_back(*it);
-    }
-  }
-  opts.insert(opts.end(), extraOpts.begin(), extraOpts.end());
+  return (std::find(list.begin(), list.end(), entry) != list.end());
 }
 
 // -- Class methods
 
 cmQtAutoGenerators::cmQtAutoGenerators()
-  : Verbose(cmsys::SystemTools::HasEnv("VERBOSE"))
+  : MultiConfig(cmQtAutoGen::WRAP)
+  , IncludeProjectDirsBefore(false)
+  , Verbose(cmSystemTools::HasEnv("VERBOSE"))
   , ColorOutput(true)
   , MocSettingsChanged(false)
   , MocPredefsChanged(false)
-  , MocRunFailed(false)
+  , MocRelaxedMode(false)
   , UicSettingsChanged(false)
-  , UicRunFailed(false)
   , RccSettingsChanged(false)
-  , RccRunFailed(false)
 {
-
-  std::string colorEnv;
-  cmsys::SystemTools::GetEnv("COLOR", colorEnv);
-  if (!colorEnv.empty()) {
-    if (cmSystemTools::IsOn(colorEnv.c_str())) {
-      this->ColorOutput = true;
-    } else {
-      this->ColorOutput = false;
+  {
+    std::string colorEnv;
+    cmSystemTools::GetEnv("COLOR", colorEnv);
+    if (!colorEnv.empty()) {
+      this->ColorOutput = cmSystemTools::IsOn(colorEnv.c_str());
     }
   }
 
-  // Moc macro filters
-  this->MocMacroFilters[0].first = "Q_OBJECT";
-  this->MocMacroFilters[0].second.compile("[\n][ \t]*Q_OBJECT[^a-zA-Z0-9_]");
-  this->MocMacroFilters[1].first = "Q_GADGET";
-  this->MocMacroFilters[1].second.compile("[\n][ \t]*Q_GADGET[^a-zA-Z0-9_]");
-
   // Precompile regular expressions
   this->MocRegExpInclude.compile(
     "[\n][ \t]*#[ \t]*include[ \t]+"
@@ -293,8 +157,8 @@ cmQtAutoGenerators::cmQtAutoGenerators()
                                  "[\"<](([^ \">]+/)?ui_[^ \">/]+\\.h)[\">]");
 }
 
-bool cmQtAutoGenerators::Run(const std::string& targetDirectory,
-                             const std::string& config)
+bool cmQtAutoGenerators::Run(std::string const& targetDirectory,
+                             std::string const& config)
 {
   cmake cm(cmake::RoleScript);
   cm.SetHomeOutputDirectory(targetDirectory);
@@ -306,16 +170,14 @@ bool cmQtAutoGenerators::Run(const std::string& targetDirectory,
   snapshot.GetDirectory().SetCurrentBinary(targetDirectory);
   snapshot.GetDirectory().SetCurrentSource(targetDirectory);
 
-  CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(&gg, snapshot));
-  gg.SetCurrentMakefile(mf.get());
+  auto makefile = cm::make_unique<cmMakefile>(&gg, snapshot);
+  gg.SetCurrentMakefile(makefile.get());
 
   bool success = false;
-  if (this->ReadAutogenInfoFile(mf.get(), targetDirectory, config)) {
-    // Read old settings
-    this->SettingsFileRead(mf.get());
-    // Init and run
-    this->Init(mf.get());
-    if (this->RunAutogen()) {
+  if (this->InitInfoFile(makefile.get(), targetDirectory, config)) {
+    // Read latest settings
+    this->SettingsFileRead(makefile.get());
+    if (this->Process()) {
       // Write current settings
       if (this->SettingsFileWrite()) {
         success = true;
@@ -325,108 +187,145 @@ bool cmQtAutoGenerators::Run(const std::string& targetDirectory,
   return success;
 }
 
-bool cmQtAutoGenerators::MocDependFilterPush(const std::string& key,
-                                             const std::string& regExp)
+bool cmQtAutoGenerators::InitInfoFile(cmMakefile* makefile,
+                                      std::string const& targetDirectory,
+                                      std::string const& config)
 {
-  bool success = false;
-  if (!key.empty()) {
-    if (!regExp.empty()) {
-      MocDependFilter filter;
-      filter.key = key;
-      if (filter.regExp.compile(regExp)) {
-        this->MocDependFilters.push_back(filter);
-        success = true;
-      } else {
-        this->LogError("AutoMoc: Error in AUTOMOC_DEPEND_FILTERS: Compiling "
-                       "regular expression failed.\nKey:  " +
-                       Quoted(key) + "\nExp.: " + Quoted(regExp));
+  // -- Meta
+  this->HeaderExtensions = makefile->GetCMakeInstance()->GetHeaderExtensions();
+
+  // Utility lambdas
+  auto InfoGet = [makefile](const char* key) {
+    return makefile->GetSafeDefinition(key);
+  };
+  auto InfoGetBool = [makefile](const char* key) {
+    return makefile->IsOn(key);
+  };
+  auto InfoGetList = [makefile](const char* key) -> std::vector<std::string> {
+    std::vector<std::string> list;
+    cmSystemTools::ExpandListArgument(makefile->GetSafeDefinition(key), list);
+    return list;
+  };
+  auto InfoGetLists =
+    [makefile](const char* key) -> std::vector<std::vector<std::string>> {
+    std::vector<std::vector<std::string>> lists;
+    {
+      std::string const value = makefile->GetSafeDefinition(key);
+      std::string::size_type pos = 0;
+      while (pos < value.size()) {
+        std::string::size_type next = value.find(cmQtAutoGen::listSep, pos);
+        std::string::size_type length =
+          (next != std::string::npos) ? next - pos : value.size() - pos;
+        // Remove enclosing braces
+        if (length >= 2) {
+          std::string::const_iterator itBeg = value.begin() + (pos + 1);
+          std::string::const_iterator itEnd = itBeg + (length - 2);
+          {
+            std::string subValue(itBeg, itEnd);
+            std::vector<std::string> list;
+            cmSystemTools::ExpandListArgument(subValue, list);
+            lists.push_back(std::move(list));
+          }
+        }
+        pos += length;
+        pos += cmQtAutoGen::listSep.size();
       }
-    } else {
-      this->LogError("AutoMoc: Error in AUTOMOC_DEPEND_FILTERS: Regular "
-                     "expression is empty");
     }
-  } else {
-    this->LogError("AutoMoc: Error in AUTOMOC_DEPEND_FILTERS: Key is empty");
-  }
-  return success;
-}
-
-bool cmQtAutoGenerators::ReadAutogenInfoFile(
-  cmMakefile* makefile, const std::string& targetDirectory,
-  const std::string& config)
-{
-  std::string filename(cmSystemTools::CollapseFullPath(targetDirectory));
-  cmSystemTools::ConvertToUnixSlashes(filename);
-  filename += "/AutogenInfo.cmake";
+    return lists;
+  };
+  auto InfoGetConfig = [makefile, &config](const char* key) -> std::string {
+    const char* valueConf = nullptr;
+    {
+      std::string keyConf = key;
+      keyConf += '_';
+      keyConf += config;
+      valueConf = makefile->GetDefinition(keyConf);
+    }
+    if (valueConf == nullptr) {
+      valueConf = makefile->GetSafeDefinition(key);
+    }
+    return std::string(valueConf);
+  };
+  auto InfoGetConfigList =
+    [&InfoGetConfig](const char* key) -> std::vector<std::string> {
+    std::vector<std::string> list;
+    cmSystemTools::ExpandListArgument(InfoGetConfig(key), list);
+    return list;
+  };
 
-  if (!makefile->ReadListFile(filename.c_str())) {
-    this->LogError("AutoGen: Error processing file: " + filename);
+  // -- Read info file
+  this->InfoFile = cmSystemTools::CollapseFullPath(targetDirectory);
+  cmSystemTools::ConvertToUnixSlashes(this->InfoFile);
+  this->InfoFile += "/AutogenInfo.cmake";
+  if (!makefile->ReadListFile(this->InfoFile.c_str())) {
+    this->LogFileError(cmQtAutoGen::GEN, this->InfoFile,
+                       "File processing failed");
     return false;
   }
 
-  // - Old settings file
-  {
-    this->SettingsFile = cmSystemTools::CollapseFullPath(targetDirectory);
-    cmSystemTools::ConvertToUnixSlashes(this->SettingsFile);
-    this->SettingsFile += "/AutogenOldSettings";
-    this->SettingsFile += this->ConfigSuffix;
-    this->SettingsFile += ".cmake";
-  }
-
   // -- Meta
-  InfoGetConfig(makefile, "AM_CONFIG_SUFFIX", config, this->ConfigSuffix);
+  this->MultiConfig = cmQtAutoGen::MultiConfigType(InfoGet("AM_MULTI_CONFIG"));
+  this->ConfigSuffix = InfoGetConfig("AM_CONFIG_SUFFIX");
+  if (this->ConfigSuffix.empty()) {
+    this->ConfigSuffix = "_";
+    this->ConfigSuffix += config;
+  }
 
   // - Files and directories
-  InfoGet(makefile, "AM_CMAKE_SOURCE_DIR", this->ProjectSourceDir);
-  InfoGet(makefile, "AM_CMAKE_BINARY_DIR", this->ProjectBinaryDir);
-  InfoGet(makefile, "AM_CMAKE_CURRENT_SOURCE_DIR", this->CurrentSourceDir);
-  InfoGet(makefile, "AM_CMAKE_CURRENT_BINARY_DIR", this->CurrentBinaryDir);
-  InfoGet(makefile, "AM_CMAKE_INCLUDE_DIRECTORIES_PROJECT_BEFORE",
-          this->IncludeProjectDirsBefore);
-  InfoGet(makefile, "AM_BUILD_DIR", this->AutogenBuildDir);
+  this->ProjectSourceDir = InfoGet("AM_CMAKE_SOURCE_DIR");
+  this->ProjectBinaryDir = InfoGet("AM_CMAKE_BINARY_DIR");
+  this->CurrentSourceDir = InfoGet("AM_CMAKE_CURRENT_SOURCE_DIR");
+  this->CurrentBinaryDir = InfoGet("AM_CMAKE_CURRENT_BINARY_DIR");
+  this->IncludeProjectDirsBefore =
+    InfoGetBool("AM_CMAKE_INCLUDE_DIRECTORIES_PROJECT_BEFORE");
+  this->AutogenBuildDir = InfoGet("AM_BUILD_DIR");
   if (this->AutogenBuildDir.empty()) {
-    this->LogError("AutoGen: Error: Missing autogen build directory ");
+    this->LogFileError(cmQtAutoGen::GEN, this->InfoFile,
+                       "Autogen build directory missing");
     return false;
   }
-  InfoGet(makefile, "AM_SOURCES", this->Sources);
-  InfoGet(makefile, "AM_HEADERS", this->Headers);
 
   // - Qt environment
-  InfoGet(makefile, "AM_QT_VERSION_MAJOR", this->QtMajorVersion);
-  if (this->QtMajorVersion.empty()) {
-    InfoGet(makefile, "AM_Qt5Core_VERSION_MAJOR", this->QtMajorVersion);
-  }
-  InfoGet(makefile, "AM_QT_MOC_EXECUTABLE", this->MocExecutable);
-  InfoGet(makefile, "AM_QT_UIC_EXECUTABLE", this->UicExecutable);
-  InfoGet(makefile, "AM_QT_RCC_EXECUTABLE", this->RccExecutable);
+  this->QtMajorVersion = InfoGet("AM_QT_VERSION_MAJOR");
+  this->QtMinorVersion = InfoGet("AM_QT_VERSION_MINOR");
+  this->MocExecutable = InfoGet("AM_QT_MOC_EXECUTABLE");
+  this->UicExecutable = InfoGet("AM_QT_UIC_EXECUTABLE");
+  this->RccExecutable = InfoGet("AM_QT_RCC_EXECUTABLE");
 
-  InfoGet(makefile, "AM_MOC_PREDEFS_CMD", this->MocPredefsCmd);
   // Check Qt version
   if ((this->QtMajorVersion != "4") && (this->QtMajorVersion != "5")) {
-    this->LogError("AutoGen: Error: Unsupported Qt version: " +
-                   Quoted(this->QtMajorVersion));
+    this->LogFileError(cmQtAutoGen::GEN, this->InfoFile,
+                       "Unsupported Qt version: " +
+                         cmQtAutoGen::Quoted(this->QtMajorVersion));
     return false;
   }
 
   // - Moc
   if (this->MocEnabled()) {
-    InfoGet(makefile, "AM_MOC_SKIP", this->MocSkipList);
-    InfoGetConfig(makefile, "AM_MOC_DEFINITIONS", config,
-                  this->MocDefinitions);
+    this->MocSkipList = InfoGetList("AM_MOC_SKIP");
+    this->MocDefinitions = InfoGetConfigList("AM_MOC_DEFINITIONS");
 #ifdef _WIN32
     {
-      const std::string win32("WIN32");
+      std::string const win32("WIN32");
       if (!ListContains(this->MocDefinitions, win32)) {
         this->MocDefinitions.push_back(win32);
       }
     }
 #endif
-    InfoGetConfig(makefile, "AM_MOC_INCLUDES", config, this->MocIncludePaths);
-    InfoGet(makefile, "AM_MOC_OPTIONS", this->MocOptions);
-    InfoGet(makefile, "AM_MOC_RELAXED_MODE", this->MocRelaxedMode);
+    this->MocIncludePaths = InfoGetConfigList("AM_MOC_INCLUDES");
+    this->MocOptions = InfoGetList("AM_MOC_OPTIONS");
+    this->MocRelaxedMode = InfoGetBool("AM_MOC_RELAXED_MODE");
+    {
+      std::vector<std::string> const MocMacroNames =
+        InfoGetList("AM_MOC_MACRO_NAMES");
+      for (std::string const& item : MocMacroNames) {
+        this->MocMacroFilters.emplace_back(
+          item, ("[\n][ \t]*{?[ \t]*" + item).append("[^a-zA-Z0-9_]"));
+      }
+    }
     {
-      std::vector<std::string> mocDependFilters;
-      InfoGet(makefile, "AM_MOC_DEPEND_FILTERS", mocDependFilters);
+      std::vector<std::string> const mocDependFilters =
+        InfoGetList("AM_MOC_DEPEND_FILTERS");
       // Insert Q_PLUGIN_METADATA dependency filter
       if (this->QtMajorVersion != "4") {
         this->MocDependFilterPush("Q_PLUGIN_METADATA",
@@ -435,104 +334,266 @@ bool cmQtAutoGenerators::ReadAutogenInfoFile(
       }
       // Insert user defined dependency filters
       if ((mocDependFilters.size() % 2) == 0) {
-        for (std::vector<std::string>::const_iterator dit =
-               mocDependFilters.begin();
-             dit != mocDependFilters.end(); dit += 2) {
+        for (std::vector<std::string>::const_iterator
+               dit = mocDependFilters.begin(),
+               ditEnd = mocDependFilters.end();
+             dit != ditEnd; dit += 2) {
           if (!this->MocDependFilterPush(*dit, *(dit + 1))) {
             return false;
           }
         }
       } else {
-        this->LogError(
-          "AutoMoc: Error: AUTOMOC_DEPEND_FILTERS list size is not "
-          "a multiple of 2 in:\n" +
-          Quoted(filename));
+        this->LogFileError(
+          cmQtAutoGen::MOC, this->InfoFile,
+          "AUTOMOC_DEPEND_FILTERS list size is not a multiple of 2");
         return false;
       }
     }
+    this->MocPredefsCmd = InfoGetList("AM_MOC_PREDEFS_CMD");
   }
 
   // - Uic
   if (this->UicEnabled()) {
-    InfoGet(makefile, "AM_UIC_SKIP", this->UicSkipList);
-    InfoGet(makefile, "AM_UIC_SEARCH_PATHS", this->UicSearchPaths);
-    InfoGetConfig(makefile, "AM_UIC_TARGET_OPTIONS", config,
-                  this->UicTargetOptions);
+    this->UicSkipList = InfoGetList("AM_UIC_SKIP");
+    this->UicSearchPaths = InfoGetList("AM_UIC_SEARCH_PATHS");
+    this->UicTargetOptions = InfoGetConfigList("AM_UIC_TARGET_OPTIONS");
     {
-      std::vector<std::string> uicFilesVec;
-      std::vector<std::string> uicOptionsVec;
-      InfoGet(makefile, "AM_UIC_OPTIONS_FILES", uicFilesVec);
-      InfoGet(makefile, "AM_UIC_OPTIONS_OPTIONS", uicOptionsVec);
+      auto sources = InfoGetList("AM_UIC_OPTIONS_FILES");
+      auto options = InfoGetLists("AM_UIC_OPTIONS_OPTIONS");
       // Compare list sizes
-      if (uicFilesVec.size() == uicOptionsVec.size()) {
-        for (std::vector<std::string>::iterator
-               fileIt = uicFilesVec.begin(),
-               optionIt = uicOptionsVec.begin();
-             fileIt != uicFilesVec.end(); ++fileIt, ++optionIt) {
-          cmSystemTools::ReplaceString(*optionIt,
-                                       cmQtAutoGeneratorCommon::listSep, ";");
-          this->UicOptions[*fileIt] = *optionIt;
-        }
-      } else {
-        this->LogError(
-          "AutoGen: Error: Uic files/options lists size missmatch in:\n" +
-          Quoted(filename));
+      if (sources.size() != options.size()) {
+        std::ostringstream ost;
+        ost << "files/options lists sizes missmatch (" << sources.size() << "/"
+            << options.size() << ")";
+        this->LogFileError(cmQtAutoGen::UIC, this->InfoFile, ost.str());
         return false;
       }
+      auto fitEnd = sources.cend();
+      auto fit = sources.begin();
+      auto oit = options.begin();
+      while (fit != fitEnd) {
+        this->UicOptions[*fit] = std::move(*oit);
+        ++fit;
+        ++oit;
+      }
     }
   }
 
   // - Rcc
   if (this->RccEnabled()) {
-    InfoGet(makefile, "AM_RCC_SOURCES", this->RccSources);
-    // File options
+    // File lists
+    auto sources = InfoGetList("AM_RCC_SOURCES");
+    auto builds = InfoGetList("AM_RCC_BUILDS");
+    auto options = InfoGetLists("AM_RCC_OPTIONS");
+    auto inputs = InfoGetLists("AM_RCC_INPUTS");
+
+    if (sources.size() != builds.size()) {
+      std::ostringstream ost;
+      ost << "sources, builds lists sizes missmatch (" << sources.size() << "/"
+          << builds.size() << ")";
+      this->LogFileError(cmQtAutoGen::RCC, this->InfoFile, ost.str());
+      return false;
+    }
+    if (sources.size() != options.size()) {
+      std::ostringstream ost;
+      ost << "sources, options lists sizes missmatch (" << sources.size()
+          << "/" << options.size() << ")";
+      this->LogFileError(cmQtAutoGen::RCC, this->InfoFile, ost.str());
+      return false;
+    }
+    if (sources.size() != inputs.size()) {
+      std::ostringstream ost;
+      ost << "sources, inputs lists sizes missmatch (" << sources.size() << "/"
+          << inputs.size() << ")";
+      this->LogFileError(cmQtAutoGen::RCC, this->InfoFile, ost.str());
+      return false;
+    }
+    {
+      auto srcItEnd = sources.end();
+      auto srcIt = sources.begin();
+      auto bldIt = builds.begin();
+      auto optIt = options.begin();
+      auto inpIt = inputs.begin();
+      while (srcIt != srcItEnd) {
+        this->RccJobs.push_back(RccJob{ std::move(*srcIt), std::move(*bldIt),
+                                        std::move(*optIt),
+                                        std::move(*inpIt) });
+        ++srcIt;
+        ++bldIt;
+        ++optIt;
+        ++inpIt;
+      }
+    }
+  }
+
+  // Initialize source file jobs
+  {
+    // Utility lambdas
+    auto AddJob = [this](std::map<std::string, SourceJob>& jobs,
+                         std::string&& sourceFile) {
+      const bool moc = !this->MocSkip(sourceFile);
+      const bool uic = !this->UicSkip(sourceFile);
+      if (moc || uic) {
+        SourceJob& job = jobs[std::move(sourceFile)];
+        job.Moc = moc;
+        job.Uic = uic;
+      }
+    };
+
+    // Add header jobs
+    for (std::string& hdr : InfoGetList("AM_HEADERS")) {
+      AddJob(this->HeaderJobs, std::move(hdr));
+    }
+    // Add source jobs
     {
-      std::vector<std::string> rccFilesVec;
-      std::vector<std::string> rccOptionsVec;
-      InfoGet(makefile, "AM_RCC_OPTIONS_FILES", rccFilesVec);
-      InfoGet(makefile, "AM_RCC_OPTIONS_OPTIONS", rccOptionsVec);
-      if (rccFilesVec.size() == rccOptionsVec.size()) {
-        for (std::vector<std::string>::iterator
-               fileIt = rccFilesVec.begin(),
-               optionIt = rccOptionsVec.begin();
-             fileIt != rccFilesVec.end(); ++fileIt, ++optionIt) {
-          // Replace item separator
-          cmSystemTools::ReplaceString(*optionIt,
-                                       cmQtAutoGeneratorCommon::listSep, ";");
-          this->RccOptions[*fileIt] = *optionIt;
+      std::vector<std::string> sources = InfoGetList("AM_SOURCES");
+      // Add header(s) for the source file
+      for (std::string const& src : sources) {
+        const bool srcMoc = !this->MocSkip(src);
+        const bool srcUic = !this->UicSkip(src);
+        if (!srcMoc && !srcUic) {
+          continue;
         }
-      } else {
-        this->LogError(
-          "AutoGen: Error: RCC files/options lists size missmatch in:\n" +
-          Quoted(filename));
-        return false;
+        // Search for the default header file and a private header
+        std::array<std::string, 2> headerBases;
+        headerBases[0] = SubDirPrefix(src);
+        headerBases[0] += cmSystemTools::GetFilenameWithoutLastExtension(src);
+        headerBases[1] = headerBases[0];
+        headerBases[1] += "_p";
+        for (std::string const& headerBase : headerBases) {
+          std::string header;
+          if (this->FindHeader(header, headerBase)) {
+            const bool moc = srcMoc && !this->MocSkip(header);
+            const bool uic = srcUic && !this->UicSkip(header);
+            if (moc || uic) {
+              SourceJob& job = this->HeaderJobs[std::move(header)];
+              job.Moc = moc;
+              job.Uic = uic;
+            }
+          }
+        }
+      }
+      // Add Source jobs
+      for (std::string& src : sources) {
+        AddJob(this->SourceJobs, std::move(src));
       }
     }
-    // File lists
+  }
+
+  // Init derived information
+  // ------------------------
+
+  // Init file path checksum generator
+  this->FilePathChecksum.setupParentDirs(
+    this->CurrentSourceDir, this->CurrentBinaryDir, this->ProjectSourceDir,
+    this->ProjectBinaryDir);
+
+  // include directory
+  this->AutogenIncludeDir = "include";
+  if (this->MultiConfig != cmQtAutoGen::SINGLE) {
+    this->AutogenIncludeDir += this->ConfigSuffix;
+  }
+  this->AutogenIncludeDir += "/";
+
+  // Moc variables
+  if (this->MocEnabled()) {
+    // Mocs compilation file
+    this->MocCompFileRel = "mocs_compilation";
+    if (this->MultiConfig == cmQtAutoGen::FULL) {
+      this->MocCompFileRel += this->ConfigSuffix;
+    }
+    this->MocCompFileRel += ".cpp";
+    this->MocCompFileAbs = cmSystemTools::CollapseCombinedPath(
+      this->AutogenBuildDir, this->MocCompFileRel);
+
+    // Moc predefs file
+    if (!this->MocPredefsCmd.empty()) {
+      this->MocPredefsFileRel = "moc_predefs";
+      if (this->MultiConfig != cmQtAutoGen::SINGLE) {
+        this->MocPredefsFileRel += this->ConfigSuffix;
+      }
+      this->MocPredefsFileRel += ".h";
+      this->MocPredefsFileAbs = cmSystemTools::CollapseCombinedPath(
+        this->AutogenBuildDir, this->MocPredefsFileRel);
+    }
+
+    // Sort include directories on demand
+    if (this->IncludeProjectDirsBefore) {
+      // Move strings to temporary list
+      std::list<std::string> includes;
+      includes.insert(includes.end(), this->MocIncludePaths.begin(),
+                      this->MocIncludePaths.end());
+      this->MocIncludePaths.clear();
+      this->MocIncludePaths.reserve(includes.size());
+      // Append project directories only
+      {
+        std::array<std::string const*, 2> const movePaths = {
+          { &this->ProjectBinaryDir, &this->ProjectSourceDir }
+        };
+        for (std::string const* ppath : movePaths) {
+          std::list<std::string>::iterator it = includes.begin();
+          while (it != includes.end()) {
+            std::string const& path = *it;
+            if (cmSystemTools::StringStartsWith(path, ppath->c_str())) {
+              this->MocIncludePaths.push_back(path);
+              it = includes.erase(it);
+            } else {
+              ++it;
+            }
+          }
+        }
+      }
+      // Append remaining directories
+      this->MocIncludePaths.insert(this->MocIncludePaths.end(),
+                                   includes.begin(), includes.end());
+    }
+    // Compose moc includes list
     {
-      std::vector<std::string> rccInputLists;
-      InfoGet(makefile, "AM_RCC_INPUTS", rccInputLists);
-      if (this->RccSources.size() == rccInputLists.size()) {
-        for (std::vector<std::string>::iterator
-               fileIt = this->RccSources.begin(),
-               inputIt = rccInputLists.begin();
-             fileIt != this->RccSources.end(); ++fileIt, ++inputIt) {
-          // Remove braces
-          *inputIt = inputIt->substr(1, inputIt->size() - 2);
-          // Replace item separator
-          cmSystemTools::ReplaceString(*inputIt,
-                                       cmQtAutoGeneratorCommon::listSep, ";");
-          std::vector<std::string> rccInputFiles;
-          cmSystemTools::ExpandListArgument(*inputIt, rccInputFiles);
-          this->RccInputs[*fileIt] = rccInputFiles;
+      std::set<std::string> frameworkPaths;
+      for (std::string const& path : this->MocIncludePaths) {
+        this->MocIncludes.push_back("-I" + path);
+        // Extract framework path
+        if (cmHasLiteralSuffix(path, ".framework/Headers")) {
+          // Go up twice to get to the framework root
+          std::vector<std::string> pathComponents;
+          cmSystemTools::SplitPath(path, pathComponents);
+          std::string frameworkPath = cmSystemTools::JoinPath(
+            pathComponents.begin(), pathComponents.end() - 2);
+          frameworkPaths.insert(frameworkPath);
         }
-      } else {
-        this->LogError(
-          "AutoGen: Error: RCC sources/inputs lists size missmatch in:\n" +
-          Quoted(filename));
-        return false;
       }
+      // Append framework includes
+      for (std::string const& path : frameworkPaths) {
+        this->MocIncludes.push_back("-F");
+        this->MocIncludes.push_back(path);
+      }
+    }
+    // Setup single list with all options
+    {
+      // Add includes
+      this->MocAllOptions.insert(this->MocAllOptions.end(),
+                                 this->MocIncludes.begin(),
+                                 this->MocIncludes.end());
+      // Add definitions
+      for (std::string const& def : this->MocDefinitions) {
+        this->MocAllOptions.push_back("-D" + def);
+      }
+      // Add options
+      this->MocAllOptions.insert(this->MocAllOptions.end(),
+                                 this->MocOptions.begin(),
+                                 this->MocOptions.end());
+    }
+  }
+
+  // - Old settings file
+  {
+    this->SettingsFile = cmSystemTools::CollapseFullPath(targetDirectory);
+    cmSystemTools::ConvertToUnixSlashes(this->SettingsFile);
+    this->SettingsFile += "/AutogenOldSettings";
+    if (this->MultiConfig != cmQtAutoGen::SINGLE) {
+      this->SettingsFile += this->ConfigSuffix;
     }
+    this->SettingsFile += ".cmake";
   }
 
   return true;
@@ -543,20 +604,16 @@ void cmQtAutoGenerators::SettingsFileRead(cmMakefile* makefile)
   // Compose current settings strings
   {
     cmCryptoHash crypt(cmCryptoHash::AlgoSHA256);
-    const std::string sep(" ~~~ ");
+    std::string const sep(" ~~~ ");
     if (this->MocEnabled()) {
       std::string str;
       str += this->MocExecutable;
       str += sep;
-      str += JoinOptionsList(this->MocDefinitions);
-      str += sep;
-      str += JoinOptionsList(this->MocIncludePaths);
-      str += sep;
-      str += JoinOptionsList(this->MocOptions);
+      str += cmJoin(this->MocAllOptions, ";");
       str += sep;
       str += this->IncludeProjectDirsBefore ? "TRUE" : "FALSE";
       str += sep;
-      str += JoinOptionsList(this->MocPredefsCmd);
+      str += cmJoin(this->MocPredefsCmd, ";");
       str += sep;
       this->SettingsStringMoc = crypt.HashString(str);
     }
@@ -564,17 +621,27 @@ void cmQtAutoGenerators::SettingsFileRead(cmMakefile* makefile)
       std::string str;
       str += this->UicExecutable;
       str += sep;
-      str += JoinOptionsList(this->UicTargetOptions);
-      str += sep;
-      str += JoinOptionsMap(this->UicOptions);
+      str += cmJoin(this->UicTargetOptions, ";");
+      for (const auto& item : this->UicOptions) {
+        str += sep;
+        str += item.first;
+        str += sep;
+        str += cmJoin(item.second, ";");
+      }
       str += sep;
       this->SettingsStringUic = crypt.HashString(str);
     }
     if (this->RccEnabled()) {
       std::string str;
       str += this->RccExecutable;
-      str += sep;
-      str += JoinOptionsMap(this->RccOptions);
+      for (const RccJob& rccJob : this->RccJobs) {
+        str += sep;
+        str += rccJob.QrcFile;
+        str += sep;
+        str += rccJob.RccFile;
+        str += sep;
+        str += cmJoin(rccJob.Options, ";");
+      }
       str += sep;
       this->SettingsStringRcc = crypt.HashString(str);
     }
@@ -582,19 +649,24 @@ void cmQtAutoGenerators::SettingsFileRead(cmMakefile* makefile)
 
   // Read old settings
   if (makefile->ReadListFile(this->SettingsFile.c_str())) {
-    if (!SettingsMatch(makefile, SettingsKeyMoc, this->SettingsStringMoc)) {
-      this->MocSettingsChanged = true;
-    }
-    if (!SettingsMatch(makefile, SettingsKeyUic, this->SettingsStringUic)) {
-      this->UicSettingsChanged = true;
-    }
-    if (!SettingsMatch(makefile, SettingsKeyRcc, this->SettingsStringRcc)) {
-      this->RccSettingsChanged = true;
+    {
+      auto SMatch = [makefile](const char* key, std::string const& value) {
+        return (value == makefile->GetSafeDefinition(key));
+      };
+      if (!SMatch(SettingsKeyMoc, this->SettingsStringMoc)) {
+        this->MocSettingsChanged = true;
+      }
+      if (!SMatch(SettingsKeyUic, this->SettingsStringUic)) {
+        this->UicSettingsChanged = true;
+      }
+      if (!SMatch(SettingsKeyRcc, this->SettingsStringRcc)) {
+        this->RccSettingsChanged = true;
+      }
     }
     // In case any setting changed remove the old settings file.
     // This triggers a full rebuild on the next run if the current
     // build is aborted before writing the current settings in the end.
-    if (this->AnySettingsChanged()) {
+    if (this->SettingsChanged()) {
       cmSystemTools::RemoveFile(this->SettingsFile);
     }
   } else {
@@ -609,20 +681,30 @@ bool cmQtAutoGenerators::SettingsFileWrite()
 {
   bool success = true;
   // Only write if any setting changed
-  if (this->AnySettingsChanged()) {
+  if (this->SettingsChanged()) {
     if (this->Verbose) {
-      this->LogInfo("AutoGen: Writing settings file " +
-                    Quoted(this->SettingsFile));
+      this->LogInfo(cmQtAutoGen::GEN, "Writing settings file " +
+                      cmQtAutoGen::Quoted(this->SettingsFile));
     }
     // Compose settings file content
     std::string settings;
-    SettingAppend(settings, SettingsKeyMoc, this->SettingsStringMoc);
-    SettingAppend(settings, SettingsKeyUic, this->SettingsStringUic);
-    SettingAppend(settings, SettingsKeyRcc, this->SettingsStringRcc);
+    {
+      auto SettingAppend = [&settings](const char* key,
+                                       std::string const& value) {
+        settings += "set(";
+        settings += key;
+        settings += " ";
+        settings += cmOutputConverter::EscapeForCMake(value);
+        settings += ")\n";
+      };
+      SettingAppend(SettingsKeyMoc, this->SettingsStringMoc);
+      SettingAppend(SettingsKeyUic, this->SettingsStringUic);
+      SettingAppend(SettingsKeyRcc, this->SettingsStringRcc);
+    }
     // Write settings file
-    if (!this->FileWrite("AutoGen", this->SettingsFile, settings)) {
-      this->LogError("AutoGen: Error: Could not write old settings file " +
-                     Quoted(this->SettingsFile));
+    if (!this->FileWrite(cmQtAutoGen::GEN, this->SettingsFile, settings)) {
+      this->LogFileError(cmQtAutoGen::GEN, this->SettingsFile,
+                         "Settings file writing failed");
       // Remove old settings file to trigger a full rebuild on the next run
       cmSystemTools::RemoveFile(this->SettingsFile);
       success = false;
@@ -631,157 +713,49 @@ bool cmQtAutoGenerators::SettingsFileWrite()
   return success;
 }
 
-void cmQtAutoGenerators::Init(cmMakefile* makefile)
-{
-  // Mocs compilation file
-  this->MocCompFileRel = "mocs_compilation";
-  this->MocCompFileRel += this->ConfigSuffix;
-  this->MocCompFileRel += ".cpp";
-  this->MocCompFileAbs = cmSystemTools::CollapseCombinedPath(
-    this->AutogenBuildDir, this->MocCompFileRel);
-
-  // Mocs include directory
-  this->AutogenIncludeDir = "include";
-  this->AutogenIncludeDir += this->ConfigSuffix;
-  this->AutogenIncludeDir += "/";
-
-  // Moc predefs file
-  if (!this->MocPredefsCmd.empty()) {
-    this->MocPredefsFileRel = "moc_predefs.h";
-    this->MocPredefsFileAbs = cmSystemTools::CollapseCombinedPath(
-      this->AutogenBuildDir, this->MocPredefsFileRel);
-  }
-
-  // Init file path checksum generator
-  FPathChecksum.setupParentDirs(this->CurrentSourceDir, this->CurrentBinaryDir,
-                                this->ProjectSourceDir,
-                                this->ProjectBinaryDir);
-
-  // Acquire header extensions
-  this->HeaderExtensions = makefile->GetCMakeInstance()->GetHeaderExtensions();
-
-  // Sort include directories on demand
-  if (this->IncludeProjectDirsBefore) {
-    // Move strings to temporary list
-    std::list<std::string> includes;
-    includes.insert(includes.end(), this->MocIncludePaths.begin(),
-                    this->MocIncludePaths.end());
-    this->MocIncludePaths.clear();
-    this->MocIncludePaths.reserve(includes.size());
-    // Append project directories only
-    {
-      const char* movePaths[2] = { this->ProjectBinaryDir.c_str(),
-                                   this->ProjectSourceDir.c_str() };
-      for (const char* const* mpit = cmArrayBegin(movePaths);
-           mpit != cmArrayEnd(movePaths); ++mpit) {
-        std::list<std::string>::iterator it = includes.begin();
-        while (it != includes.end()) {
-          const std::string& path = *it;
-          if (cmsys::SystemTools::StringStartsWith(path, *mpit)) {
-            this->MocIncludePaths.push_back(path);
-            it = includes.erase(it);
-          } else {
-            ++it;
-          }
-        }
-      }
-    }
-    // Append remaining directories
-    this->MocIncludePaths.insert(this->MocIncludePaths.end(), includes.begin(),
-                                 includes.end());
-  }
-  // Compose moc includes list
-  {
-    std::set<std::string> frameworkPaths;
-    for (std::vector<std::string>::const_iterator it =
-           this->MocIncludePaths.begin();
-         it != this->MocIncludePaths.end(); ++it) {
-      const std::string& path = *it;
-      this->MocIncludes.push_back("-I" + path);
-      // Extract framework path
-      if (cmHasLiteralSuffix(path, ".framework/Headers")) {
-        // Go up twice to get to the framework root
-        std::vector<std::string> pathComponents;
-        cmsys::SystemTools::SplitPath(path, pathComponents);
-        std::string frameworkPath = cmsys::SystemTools::JoinPath(
-          pathComponents.begin(), pathComponents.end() - 2);
-        frameworkPaths.insert(frameworkPath);
-      }
-    }
-    // Append framework includes
-    for (std::set<std::string>::const_iterator it = frameworkPaths.begin();
-         it != frameworkPaths.end(); ++it) {
-      this->MocIncludes.push_back("-F");
-      this->MocIncludes.push_back(*it);
-    }
-  }
-}
-
-bool cmQtAutoGenerators::RunAutogen()
+bool cmQtAutoGenerators::Process()
 {
   // the program goes through all .cpp files to see which moc files are
   // included. It is not really interesting how the moc file is named, but
   // what file the moc is created from. Once a moc is included the same moc
-  // may not be included in the mocs_compilation_$<CONFIG>.cpp file anymore.
+  // may not be included in the mocs_compilation.cpp file anymore.
   // OTOH if there's a header containing Q_OBJECT where no corresponding
   // moc file is included anywhere a moc_<filename>.cpp file is created and
-  // included in the mocs_compilation_$<CONFIG>.cpp file.
+  // included in the mocs_compilation.cpp file.
 
   // Create AUTOGEN include directory
   {
-    const std::string incDirAbs = cmSystemTools::CollapseCombinedPath(
+    std::string const incDirAbs = cmSystemTools::CollapseCombinedPath(
       this->AutogenBuildDir, this->AutogenIncludeDir);
-    if (!cmsys::SystemTools::MakeDirectory(incDirAbs)) {
-      this->LogError("AutoGen: Error: Could not create include directory " +
-                     Quoted(incDirAbs));
+    if (!cmSystemTools::MakeDirectory(incDirAbs)) {
+      this->LogFileError(cmQtAutoGen::GEN, incDirAbs,
+                         "Could not create directory");
       return false;
     }
   }
 
-  // key = moc source filepath, value = moc output filepath
-  std::map<std::string, std::string> mocsIncluded;
-  std::map<std::string, std::string> mocsNotIncluded;
-  std::map<std::string, std::set<std::string> > mocDepends;
-  std::map<std::string, std::vector<std::string> > uisIncluded;
-  // collects all headers which may need to be mocced
-  std::set<std::string> mocHeaderFiles;
-  std::set<std::string> uicHeaderFiles;
-
-  // Parse sources
-  for (std::vector<std::string>::const_iterator it = this->Sources.begin();
-       it != this->Sources.end(); ++it) {
-    const std::string& absFilename = cmsys::SystemTools::GetRealPath(*it);
-    // Parse source file for MOC/UIC
-    if (!this->ParseSourceFile(absFilename, mocsIncluded, mocDepends,
-                               uisIncluded, this->MocRelaxedMode)) {
+  // Parse source files
+  for (const auto& item : this->SourceJobs) {
+    if (!this->ParseSourceFile(item.first, item.second)) {
       return false;
     }
-    // Find additional headers
-    this->SearchHeadersForSourceFile(absFilename, mocHeaderFiles,
-                                     uicHeaderFiles);
   }
-
-  // Parse headers
-  for (std::vector<std::string>::const_iterator it = this->Headers.begin();
-       it != this->Headers.end(); ++it) {
-    const std::string& headerName = cmsys::SystemTools::GetRealPath(*it);
-    if (!this->MocSkip(headerName)) {
-      mocHeaderFiles.insert(headerName);
-    }
-    if (!this->UicSkip(headerName)) {
-      uicHeaderFiles.insert(headerName);
+  // Parse header files
+  for (const auto& item : this->HeaderJobs) {
+    if (!this->ParseHeaderFile(item.first, item.second)) {
+      return false;
     }
   }
-  if (!this->ParseHeaders(mocHeaderFiles, uicHeaderFiles, mocsIncluded,
-                          mocsNotIncluded, mocDepends, uisIncluded)) {
+  // Read missing dependency information
+  if (!this->ParsePostprocess()) {
     return false;
-  };
+  }
 
   // Generate files
-  if (!this->MocGenerateAll(mocsIncluded, mocsNotIncluded, mocDepends)) {
+  if (!this->MocGenerateAll()) {
     return false;
   }
-  if (!this->UicGenerateAll(uisIncluded)) {
+  if (!this->UicGenerateAll()) {
     return false;
   }
   if (!this->RccGenerateAll()) {
@@ -792,72 +766,96 @@ bool cmQtAutoGenerators::RunAutogen()
 }
 
 /**
- * @brief Tests if the C++ content requires moc processing
- * @return True if moc is required
+ * @return True on success
  */
-bool cmQtAutoGenerators::MocRequired(const std::string& contentText,
-                                     std::string* macroName)
+bool cmQtAutoGenerators::ParseSourceFile(std::string const& absFilename,
+                                         const SourceJob& job)
 {
-  for (unsigned int ii = 0; ii != cmArraySize(this->MocMacroFilters); ++ii) {
-    MocMacroFilter& filter = this->MocMacroFilters[ii];
-    // Run a simple find string operation before the expensive
-    // regular expression check
-    if (contentText.find(filter.first) != std::string::npos) {
-      if (filter.second.find(contentText)) {
-        // Return macro name on demand
-        if (macroName != CM_NULLPTR) {
-          *macroName = filter.first;
-        }
-        return true;
+  std::string contentText;
+  std::string error;
+  bool success = ReadFile(contentText, absFilename, &error);
+  if (success) {
+    if (!contentText.empty()) {
+      if (job.Moc) {
+        success = this->MocParseSourceContent(absFilename, contentText);
       }
+      if (success && job.Uic) {
+        success = this->UicParseContent(absFilename, contentText);
+      }
+    } else {
+      this->LogFileWarning(cmQtAutoGen::GEN, absFilename,
+                           "The source file is empty");
     }
+  } else {
+    this->LogFileError(cmQtAutoGen::GEN, absFilename,
+                       "Could not read the source file: " + error);
   }
-  return false;
+  return success;
 }
 
-void cmQtAutoGenerators::MocFindDepends(
-  const std::string& absFilename, const std::string& contentText,
-  std::map<std::string, std::set<std::string> >& mocDepends)
+/**
+ * @return True on success
+ */
+bool cmQtAutoGenerators::ParseHeaderFile(std::string const& absFilename,
+                                         const SourceJob& job)
 {
-  for (std::vector<MocDependFilter>::iterator fit =
-         this->MocDependFilters.begin();
-       fit != this->MocDependFilters.end(); ++fit) {
-    MocDependFilter& filter = *fit;
-    // Run a simple find string operation before the expensive
-    // regular expression check
-    if (contentText.find(filter.key) != std::string::npos) {
-      // Run regular expression check loop
-      const std::string sourcePath = SubDirPrefix(absFilename);
-      const char* contentChars = contentText.c_str();
-      while (filter.regExp.find(contentChars)) {
-        // Evaluate match
-        const std::string match = filter.regExp.match(1);
-        if (!match.empty()) {
-          // Find the dependency file
-          std::string incFile;
-          if (this->MocFindIncludedFile(incFile, sourcePath, match)) {
-            mocDepends[absFilename].insert(incFile);
-            if (this->Verbose) {
-              this->LogInfo("AutoMoc: Found dependency:\n  " +
-                            Quoted(absFilename) + "\n  " + Quoted(incFile));
-            }
-          } else {
-            this->LogWarning("AutoMoc: Warning: " + Quoted(absFilename) +
-                             "\n" + "Could not find dependency file " +
-                             Quoted(match));
-          }
-        }
-        contentChars += filter.regExp.end();
+  std::string contentText;
+  std::string error;
+  bool success = ReadFile(contentText, absFilename, &error);
+  if (success) {
+    if (!contentText.empty()) {
+      if (job.Moc) {
+        this->MocParseHeaderContent(absFilename, contentText);
+      }
+      if (job.Uic) {
+        success = this->UicParseContent(absFilename, contentText);
+      }
+    } else {
+      this->LogFileWarning(cmQtAutoGen::GEN, absFilename,
+                           "The header file is empty");
+    }
+  } else {
+    this->LogFileError(cmQtAutoGen::GEN, absFilename,
+                       "Could not read the header file: " + error);
+  }
+  return success;
+}
+
+/**
+ * @return True on success
+ */
+bool cmQtAutoGenerators::ParsePostprocess()
+{
+  bool success = true;
+  // Read missin dependecies
+  for (auto& item : this->MocJobsIncluded) {
+    if (!item->DependsValid) {
+      std::string content;
+      std::string error;
+      if (ReadFile(content, item->SourceFile, &error)) {
+        this->MocFindDepends(item->SourceFile, content, item->Depends);
+        item->DependsValid = true;
+      } else {
+        std::string emsg = "Could not read file\n  ";
+        emsg += item->SourceFile;
+        emsg += "\nrequired by moc include \"";
+        emsg += item->IncludeString;
+        emsg += "\".\n";
+        emsg += error;
+        this->LogFileError(cmQtAutoGen::MOC, item->Includer, emsg);
+        success = false;
+        break;
       }
     }
   }
+  return success;
 }
 
 /**
  * @brief Tests if the file should be ignored for moc scanning
  * @return True if the file should be ignored
  */
-bool cmQtAutoGenerators::MocSkip(const std::string& absFilename) const
+bool cmQtAutoGenerators::MocSkip(std::string const& absFilename) const
 {
   if (this->MocEnabled()) {
     // Test if the file name is on the skip list
@@ -869,68 +867,189 @@ bool cmQtAutoGenerators::MocSkip(const std::string& absFilename) const
 }
 
 /**
- * @brief Tests if the file name is in the skip list
+ * @brief Tests if the C++ content requires moc processing
+ * @return True if moc is required
  */
-bool cmQtAutoGenerators::UicSkip(const std::string& absFilename) const
+bool cmQtAutoGenerators::MocRequired(std::string const& contentText,
+                                     std::string* macroName)
 {
-  if (this->UicEnabled()) {
-    // Test if the file name is on the skip list
-    if (!ListContains(this->UicSkipList, absFilename)) {
-      return false;
+  for (KeyRegExp& filter : this->MocMacroFilters) {
+    // Run a simple find string operation before the expensive
+    // regular expression check
+    if (contentText.find(filter.Key) != std::string::npos) {
+      if (filter.RegExp.find(contentText)) {
+        // Return macro name on demand
+        if (macroName != nullptr) {
+          *macroName = filter.Key;
+        }
+        return true;
+      }
     }
   }
-  return true;
+  return false;
 }
 
-/**
- * @return True on success
- */
-bool cmQtAutoGenerators::ParseSourceFile(
-  const std::string& absFilename,
-  std::map<std::string, std::string>& mocsIncluded,
-  std::map<std::string, std::set<std::string> >& mocDepends,
-  std::map<std::string, std::vector<std::string> >& uisIncluded, bool relaxed)
+std::string cmQtAutoGenerators::MocStringMacros() const
 {
-  std::string contentText;
-  bool success = ReadAll(contentText, absFilename);
-  if (success) {
-    if (!contentText.empty()) {
-      // Parse source contents for MOC
-      if (success && !this->MocSkip(absFilename)) {
-        success = this->MocParseSourceContent(
-          absFilename, contentText, mocsIncluded, mocDepends, relaxed);
+  std::string res;
+  const auto itB = this->MocMacroFilters.cbegin();
+  const auto itE = this->MocMacroFilters.cend();
+  const auto itL = itE - 1;
+  auto itC = itB;
+  for (; itC != itE; ++itC) {
+    // Separator
+    if (itC != itB) {
+      if (itC != itL) {
+        res += ", ";
+      } else {
+        res += " or ";
+      }
+    }
+    // Key
+    res += itC->Key;
+  }
+  return res;
+}
+
+std::string cmQtAutoGenerators::MocStringHeaders(
+  std::string const& fileBase) const
+{
+  std::string res = fileBase;
+  res += ".{";
+  res += cmJoin(this->HeaderExtensions, ",");
+  res += "}";
+  return res;
+}
+
+std::string cmQtAutoGenerators::MocFindIncludedHeader(
+  std::string const& sourcePath, std::string const& includeBase) const
+{
+  std::string header;
+  // Search in vicinity of the source
+  if (!this->FindHeader(header, sourcePath + includeBase)) {
+    // Search in include directories
+    for (std::string const& path : this->MocIncludePaths) {
+      std::string fullPath = path;
+      fullPath.push_back('/');
+      fullPath += includeBase;
+      if (this->FindHeader(header, fullPath)) {
+        break;
+      }
+    }
+  }
+  // Sanitize
+  if (!header.empty()) {
+    header = cmSystemTools::GetRealPath(header);
+  }
+  return header;
+}
+
+bool cmQtAutoGenerators::MocFindIncludedFile(
+  std::string& absFile, std::string const& sourcePath,
+  std::string const& includeString) const
+{
+  bool success = false;
+  // Search in vicinity of the source
+  {
+    std::string testPath = sourcePath;
+    testPath += includeString;
+    if (cmSystemTools::FileExists(testPath.c_str())) {
+      absFile = cmSystemTools::GetRealPath(testPath);
+      success = true;
+    }
+  }
+  // Search in include directories
+  if (!success) {
+    for (std::string const& path : this->MocIncludePaths) {
+      std::string fullPath = path;
+      fullPath.push_back('/');
+      fullPath += includeString;
+      if (cmSystemTools::FileExists(fullPath.c_str())) {
+        absFile = cmSystemTools::GetRealPath(fullPath);
+        success = true;
+        break;
       }
-      // Parse source contents for UIC
-      if (success && !this->UicSkip(absFilename)) {
-        this->UicParseContent(absFilename, contentText, uisIncluded);
+    }
+  }
+  return success;
+}
+
+bool cmQtAutoGenerators::MocDependFilterPush(std::string const& key,
+                                             std::string const& regExp)
+{
+  std::string error;
+  if (!key.empty()) {
+    if (!regExp.empty()) {
+      KeyRegExp filter;
+      filter.Key = key;
+      if (filter.RegExp.compile(regExp)) {
+        this->MocDependFilters.push_back(std::move(filter));
+      } else {
+        error = "Regular expression compiling failed";
       }
     } else {
-      std::ostringstream ost;
-      ost << "AutoGen: Warning: The file is empty:\n"
-          << Quoted(absFilename) << "\n";
-      this->LogWarning(ost.str());
+      error = "Regular expression is empty";
     }
   } else {
-    std::ostringstream ost;
-    ost << "AutoGen: Error: Could not read file:\n" << Quoted(absFilename);
-    this->LogError(ost.str());
+    error = "Key is empty";
   }
-  return success;
+  if (!error.empty()) {
+    std::string emsg = "AUTOMOC_DEPEND_FILTERS: ";
+    emsg += error;
+    emsg += "\n";
+    emsg += "  Key:    ";
+    emsg += cmQtAutoGen::Quoted(key);
+    emsg += "\n";
+    emsg += "  RegExp: ";
+    emsg += cmQtAutoGen::Quoted(regExp);
+    emsg += "\n";
+    this->LogError(cmQtAutoGen::MOC, emsg);
+    return false;
+  }
+  return true;
 }
 
-void cmQtAutoGenerators::UicParseContent(
-  const std::string& absFilename, const std::string& contentText,
-  std::map<std::string, std::vector<std::string> >& uisIncluded)
+void cmQtAutoGenerators::MocFindDepends(std::string const& absFilename,
+                                        std::string const& contentText,
+                                        std::set<std::string>& depends)
 {
-  if (this->Verbose) {
-    this->LogInfo("AutoUic: Checking " + absFilename);
+  if (this->MocDependFilters.empty() && contentText.empty()) {
+    return;
   }
 
-  const char* contentChars = contentText.c_str();
-  if (strstr(contentChars, "ui_") != CM_NULLPTR) {
-    while (this->UicRegExpInclude.find(contentChars)) {
-      uisIncluded[absFilename].push_back(this->UicRegExpInclude.match(1));
-      contentChars += this->UicRegExpInclude.end();
+  std::vector<std::string> matches;
+  for (KeyRegExp& filter : this->MocDependFilters) {
+    // Run a simple find string check
+    if (contentText.find(filter.Key) != std::string::npos) {
+      // Run the expensive regular expression check loop
+      const char* contentChars = contentText.c_str();
+      while (filter.RegExp.find(contentChars)) {
+        std::string match = filter.RegExp.match(1);
+        if (!match.empty()) {
+          matches.emplace_back(std::move(match));
+        }
+        contentChars += filter.RegExp.end();
+      }
+    }
+  }
+
+  if (!matches.empty()) {
+    std::string const sourcePath = SubDirPrefix(absFilename);
+    for (std::string const& match : matches) {
+      // Find the dependency file
+      std::string incFile;
+      if (this->MocFindIncludedFile(incFile, sourcePath, match)) {
+        depends.insert(incFile);
+        if (this->Verbose) {
+          this->LogInfo(cmQtAutoGen::MOC, "Found dependency:\n  " +
+                          cmQtAutoGen::Quoted(absFilename) + "\n  " +
+                          cmQtAutoGen::Quoted(incFile));
+        }
+      } else {
+        this->LogFileWarning(cmQtAutoGen::MOC, absFilename,
+                             "Could not find dependency file " +
+                               cmQtAutoGen::Quoted(match));
+      }
     }
   }
 }
@@ -938,322 +1057,336 @@ void cmQtAutoGenerators::UicParseContent(
 /**
  * @return True on success
  */
-bool cmQtAutoGenerators::MocParseSourceContent(
-  const std::string& absFilename, const std::string& contentText,
-  std::map<std::string, std::string>& mocsIncluded,
-  std::map<std::string, std::set<std::string> >& mocDepends, bool relaxed)
+bool cmQtAutoGenerators::MocParseSourceContent(std::string const& absFilename,
+                                               std::string const& contentText)
 {
   if (this->Verbose) {
-    this->LogInfo("AutoMoc: Checking " + absFilename);
-  }
+    this->LogInfo(cmQtAutoGen::MOC, "Checking: " + absFilename);
+  }
+
+  auto AddJob = [this, &absFilename](std::string const& sourceFile,
+                                     std::string const& includeString,
+                                     std::string const* content) {
+    auto job = cm::make_unique<MocJobIncluded>();
+    job->SourceFile = sourceFile;
+    job->BuildFileRel = this->AutogenIncludeDir;
+    job->BuildFileRel += includeString;
+    job->Includer = absFilename;
+    job->IncludeString = includeString;
+    job->DependsValid = (content != nullptr);
+    if (job->DependsValid) {
+      this->MocFindDepends(sourceFile, *content, job->Depends);
+    }
+    this->MocJobsIncluded.push_back(std::move(job));
+  };
 
-  const std::string scannedFileAbsPath = SubDirPrefix(absFilename);
-  const std::string scannedFileBasename =
-    cmsys::SystemTools::GetFilenameWithoutLastExtension(absFilename);
+  struct MocInc
+  {
+    std::string Inc;  // full include string
+    std::string Dir;  // include string directory
+    std::string Base; // include string file base
+  };
 
-  std::string macroName;
-  const bool requiresMoc = this->MocRequired(contentText, &macroName);
-  bool ownDotMocIncluded = false;
-  std::string ownMocUnderscoreInclude;
-  std::string ownMocUnderscoreHeader;
-
-  // first a simple string check for "moc" is *much* faster than the regexp,
-  // and if the string search already fails, we don't have to try the
-  // expensive regexp
-  const char* contentChars = contentText.c_str();
-  if (strstr(contentChars, "moc") != CM_NULLPTR) {
-    // Iterate over all included moc files
-    while (this->MocRegExpInclude.find(contentChars)) {
-      const std::string incString = this->MocRegExpInclude.match(1);
-      // Basename of the moc include
-      const std::string incSubDir(SubDirPrefix(incString));
-      const std::string incBasename =
-        cmsys::SystemTools::GetFilenameWithoutLastExtension(incString);
-
-      // If the moc include is of the moc_foo.cpp style we expect
-      // the Q_OBJECT class declaration in a header file.
-      // If the moc include is of the foo.moc style we need to look for
-      // a Q_OBJECT macro in the current source file, if it contains the
-      // macro we generate the moc file from the source file.
-      if (cmHasLiteralPrefix(incBasename, "moc_")) {
-        // Include: moc_FOO.cxx
-        // Remove the moc_ part
-        const std::string incRealBasename = incBasename.substr(4);
-        const std::string headerToMoc =
-          this->MocFindHeader(scannedFileAbsPath, incSubDir + incRealBasename);
-        if (!headerToMoc.empty()) {
-          if (!this->MocSkip(headerToMoc)) {
-            // Register moc job
-            mocsIncluded[headerToMoc] = incString;
-            this->MocFindDepends(headerToMoc, contentText, mocDepends);
-            // Store meta information for relaxed mode
-            if (relaxed && (incRealBasename == scannedFileBasename)) {
-              ownMocUnderscoreInclude = incString;
-              ownMocUnderscoreHeader = headerToMoc;
-            }
-          }
+  // Extract moc includes from file
+  std::vector<MocInc> mocIncsUsc;
+  std::vector<MocInc> mocIncsDot;
+  {
+    const char* contentChars = contentText.c_str();
+    if (strstr(contentChars, "moc") != nullptr) {
+      while (this->MocRegExpInclude.find(contentChars)) {
+        std::string incString = this->MocRegExpInclude.match(1);
+        std::string incDir(SubDirPrefix(incString));
+        std::string incBase =
+          cmSystemTools::GetFilenameWithoutLastExtension(incString);
+        if (cmHasLiteralPrefix(incBase, "moc_")) {
+          // moc_<BASE>.cxx
+          // Remove the moc_ part from the base name
+          mocIncsUsc.push_back(MocInc{ std::move(incString), std::move(incDir),
+                                       incBase.substr(4) });
         } else {
-          std::ostringstream ost;
-          ost << "AutoMoc: Error: " << Quoted(absFilename) << "\n"
-              << "The file includes the moc file " << Quoted(incString)
-              << ", but could not find header "
-              << Quoted(incRealBasename + "{" +
-                        JoinExts(this->HeaderExtensions) + "}");
-          ;
-          this->LogError(ost.str());
-          return false;
+          // <BASE>.moc
+          mocIncsDot.push_back(MocInc{ std::move(incString), std::move(incDir),
+                                       std::move(incBase) });
         }
+        // Forward content pointer
+        contentChars += this->MocRegExpInclude.end();
+      }
+    }
+  }
+
+  std::string selfMacroName;
+  const bool selfRequiresMoc = this->MocRequired(contentText, &selfMacroName);
+
+  // Check if there is anything to do
+  if (!selfRequiresMoc && mocIncsUsc.empty() && mocIncsDot.empty()) {
+    return true;
+  }
+
+  // Scan file variables
+  std::string const scanFileDir = SubDirPrefix(absFilename);
+  std::string const scanFileBase =
+    cmSystemTools::GetFilenameWithoutLastExtension(absFilename);
+  // Relaxed mode variables
+  bool ownDotMocIncluded = false;
+  std::string ownMocUscInclude;
+  std::string ownMocUscHeader;
+
+  // Process moc_<BASE>.cxx includes
+  for (const MocInc& mocInc : mocIncsUsc) {
+    std::string const header =
+      this->MocFindIncludedHeader(scanFileDir, mocInc.Dir + mocInc.Base);
+    if (!header.empty()) {
+      // Check if header is skipped
+      if (this->MocSkip(header)) {
+        continue;
+      }
+      // Register moc job
+      AddJob(header, mocInc.Inc, nullptr);
+      // Store meta information for relaxed mode
+      if (this->MocRelaxedMode && (mocInc.Base == scanFileBase)) {
+        ownMocUscInclude = mocInc.Inc;
+        ownMocUscHeader = header;
+      }
+    } else {
+      std::string emsg = "The file includes the moc file ";
+      emsg += cmQtAutoGen::Quoted(mocInc.Inc);
+      emsg += ", but could not find the header ";
+      emsg += cmQtAutoGen::Quoted(this->MocStringHeaders(mocInc.Base));
+      this->LogFileError(cmQtAutoGen::MOC, absFilename, emsg);
+      return false;
+    }
+  }
+
+  // Process <BASE>.moc includes
+  for (const MocInc& mocInc : mocIncsDot) {
+    const bool ownMoc = (mocInc.Base == scanFileBase);
+    if (this->MocRelaxedMode) {
+      // Relaxed mode
+      if (selfRequiresMoc && ownMoc) {
+        // Add self
+        AddJob(absFilename, mocInc.Inc, &contentText);
+        ownDotMocIncluded = true;
       } else {
-        // Include: FOO.moc
-        std::string fileToMoc;
-        if (relaxed) {
-          // Mode: Relaxed
-          if (requiresMoc && (incBasename == scannedFileBasename)) {
-            // Include self
-            fileToMoc = absFilename;
-            ownDotMocIncluded = true;
-          } else {
-            // In relaxed mode try to find a header instead but issue a warning
-            const std::string headerToMoc =
-              this->MocFindHeader(scannedFileAbsPath, incSubDir + incBasename);
-            if (!headerToMoc.empty()) {
-              if (!this->MocSkip(headerToMoc)) {
-                // This is for KDE4 compatibility:
-                fileToMoc = headerToMoc;
-                if (!requiresMoc && (incBasename == scannedFileBasename)) {
-                  std::ostringstream ost;
-                  ost
-                    << "AutoMoc: Warning: " << Quoted(absFilename) << "\n"
-                    << "The file includes the moc file " << Quoted(incString)
-                    << ", but does not contain a Q_OBJECT or Q_GADGET macro.\n"
-                    << "Running moc on " << Quoted(headerToMoc) << "!\n"
-                    << "Include " << Quoted("moc_" + incBasename + ".cpp")
-                    << " for a compatibility with strict mode (see "
-                       "CMAKE_AUTOMOC_RELAXED_MODE).\n";
-                  this->LogWarning(ost.str());
-                } else {
-                  std::ostringstream ost;
-                  ost << "AutoMoc: Warning: " << Quoted(absFilename) << "\n"
-                      << "The file includes the moc file " << Quoted(incString)
-                      << " instead of "
-                      << Quoted("moc_" + incBasename + ".cpp") << ".\n"
-                      << "Running moc on " << Quoted(headerToMoc) << "!\n"
-                      << "Include " << Quoted("moc_" + incBasename + ".cpp")
-                      << " for compatibility with strict mode (see "
-                         "CMAKE_AUTOMOC_RELAXED_MODE).\n";
-                  this->LogWarning(ost.str());
-                }
-              }
+        // In relaxed mode try to find a header instead but issue a warning.
+        // This is for KDE4 compatibility
+        std::string const header =
+          this->MocFindIncludedHeader(scanFileDir, mocInc.Dir + mocInc.Base);
+        if (!header.empty()) {
+          // Check if header is skipped
+          if (this->MocSkip(header)) {
+            continue;
+          }
+          // Register moc job
+          AddJob(header, mocInc.Inc, nullptr);
+          if (!selfRequiresMoc) {
+            if (ownMoc) {
+              std::string emsg = "The file includes the moc file ";
+              emsg += cmQtAutoGen::Quoted(mocInc.Inc);
+              emsg += ", but does not contain a ";
+              emsg += this->MocStringMacros();
+              emsg += " macro.\nRunning moc on\n  ";
+              emsg += cmQtAutoGen::Quoted(header);
+              emsg += "!\nBetter include ";
+              emsg += cmQtAutoGen::Quoted("moc_" + mocInc.Base + ".cpp");
+              emsg += " for a compatibility with strict mode.\n"
+                      "(CMAKE_AUTOMOC_RELAXED_MODE warning)\n";
+              this->LogFileWarning(cmQtAutoGen::MOC, absFilename, emsg);
             } else {
-              std::ostringstream ost;
-              ost << "AutoMoc: Error: " << Quoted(absFilename) << "\n"
-                  << "The file includes the moc file " << Quoted(incString)
-                  << ", which seems to be the moc file from a different "
-                     "source file. CMake also could not find a matching "
-                     "header.";
-              this->LogError(ost.str());
-              return false;
+              std::string emsg = "The file includes the moc file ";
+              emsg += cmQtAutoGen::Quoted(mocInc.Inc);
+              emsg += " instead of ";
+              emsg += cmQtAutoGen::Quoted("moc_" + mocInc.Base + ".cpp");
+              emsg += ".\nRunning moc on\n  ";
+              emsg += cmQtAutoGen::Quoted(header);
+              emsg += "!\nBetter include ";
+              emsg += cmQtAutoGen::Quoted("moc_" + mocInc.Base + ".cpp");
+              emsg += " for compatibility with strict mode.\n"
+                      "(CMAKE_AUTOMOC_RELAXED_MODE warning)\n";
+              this->LogFileWarning(cmQtAutoGen::MOC, absFilename, emsg);
             }
           }
         } else {
-          // Mode: Strict
-          if (incBasename == scannedFileBasename) {
-            // Include self
-            fileToMoc = absFilename;
-            ownDotMocIncluded = true;
-            // Accept but issue a warning if moc isn't required
-            if (!requiresMoc) {
-              std::ostringstream ost;
-              ost << "AutoMoc: Warning: " << Quoted(absFilename) << "\n"
-                  << "The file includes the moc file " << Quoted(incString)
-                  << ", but does not contain a Q_OBJECT or Q_GADGET "
-                     "macro.";
-              this->LogWarning(ost.str());
-            }
-          } else {
-            // Don't allow FOO.moc include other than self in strict mode
-            std::ostringstream ost;
-            ost << "AutoMoc: Error: " << Quoted(absFilename) << "\n"
-                << "The file includes the moc file " << Quoted(incString)
-                << ", which seems to be the moc file from a different "
-                   "source file. This is not supported. Include "
-                << Quoted(scannedFileBasename + ".moc")
-                << " to run moc on this source file.";
-            this->LogError(ost.str());
-            return false;
-          }
+          std::string emsg = "The file includes the moc file ";
+          emsg += cmQtAutoGen::Quoted(mocInc.Inc);
+          emsg += ", which seems to be the moc file from a different "
+                  "source file. CMake also could not find a matching "
+                  "header.";
+          this->LogFileError(cmQtAutoGen::MOC, absFilename, emsg);
+          return false;
         }
-        if (!fileToMoc.empty()) {
-          mocsIncluded[fileToMoc] = incString;
-          this->MocFindDepends(fileToMoc, contentText, mocDepends);
+      }
+    } else {
+      // Strict mode
+      if (ownMoc) {
+        // Include self
+        AddJob(absFilename, mocInc.Inc, &contentText);
+        ownDotMocIncluded = true;
+        // Accept but issue a warning if moc isn't required
+        if (!selfRequiresMoc) {
+          std::string emsg = "The file includes the moc file ";
+          emsg += cmQtAutoGen::Quoted(mocInc.Inc);
+          emsg += ", but does not contain a ";
+          emsg += this->MocStringMacros();
+          emsg += " macro.";
+          this->LogFileWarning(cmQtAutoGen::MOC, absFilename, emsg);
         }
+      } else {
+        // Don't allow <BASE>.moc include other than self in strict mode
+        std::string emsg = "The file includes the moc file ";
+        emsg += cmQtAutoGen::Quoted(mocInc.Inc);
+        emsg += ", which seems to be the moc file from a different "
+                "source file.\nThis is not supported. Include ";
+        emsg += cmQtAutoGen::Quoted(scanFileBase + ".moc");
+        emsg += " to run moc on this source file.";
+        this->LogFileError(cmQtAutoGen::MOC, absFilename, emsg);
+        return false;
       }
-      // Forward content pointer
-      contentChars += this->MocRegExpInclude.end();
     }
   }
 
-  if (requiresMoc && !ownDotMocIncluded) {
+  if (selfRequiresMoc && !ownDotMocIncluded) {
     // In this case, check whether the scanned file itself contains a Q_OBJECT.
     // If this is the case, the moc_foo.cpp should probably be generated from
     // foo.cpp instead of foo.h, because otherwise it won't build.
     // But warn, since this is not how it is supposed to be used.
-    if (relaxed && !ownMocUnderscoreInclude.empty()) {
+    if (this->MocRelaxedMode && !ownMocUscInclude.empty()) {
       // This is for KDE4 compatibility:
-      std::ostringstream ost;
-      ost << "AutoMoc: Warning: " << Quoted(absFilename) << "\n"
-          << "The file contains a " << macroName
-          << " macro, but does not include "
-          << Quoted(scannedFileBasename + ".moc") << ", but instead includes "
-          << Quoted(ownMocUnderscoreInclude) << ".\n"
-          << "Running moc on " << Quoted(absFilename) << "!\n"
-          << "Better include " << Quoted(scannedFileBasename + ".moc")
-          << " for compatibility with strict mode (see "
-             "CMAKE_AUTOMOC_RELAXED_MODE).";
-      this->LogWarning(ost.str());
-
-      // Use scanned source file instead of scanned header file as moc source
-      mocsIncluded[absFilename] = ownMocUnderscoreInclude;
-      this->MocFindDepends(absFilename, contentText, mocDepends);
-      // Remove
-      mocsIncluded.erase(ownMocUnderscoreHeader);
+      std::string emsg = "The file contains a ";
+      emsg += selfMacroName;
+      emsg += " macro, but does not include ";
+      emsg += cmQtAutoGen::Quoted(scanFileBase + ".moc");
+      emsg += ". Instead it includes ";
+      emsg += cmQtAutoGen::Quoted(ownMocUscInclude);
+      emsg += ".\nRunning moc on\n  ";
+      emsg += cmQtAutoGen::Quoted(absFilename);
+      emsg += "!\nBetter include ";
+      emsg += cmQtAutoGen::Quoted(scanFileBase + ".moc");
+      emsg += " for compatibility with strict mode.\n"
+              "(CMAKE_AUTOMOC_RELAXED_MODE warning)";
+      this->LogFileWarning(cmQtAutoGen::MOC, absFilename, emsg);
+
+      // Remove own header job
+      {
+        auto itC = this->MocJobsIncluded.begin();
+        auto itE = this->MocJobsIncluded.end();
+        for (; itC != itE; ++itC) {
+          if ((*itC)->SourceFile == ownMocUscHeader) {
+            if ((*itC)->IncludeString == ownMocUscInclude) {
+              this->MocJobsIncluded.erase(itC);
+              break;
+            }
+          }
+        }
+      }
+      // Add own source job
+      AddJob(absFilename, ownMocUscInclude, &contentText);
     } else {
       // Otherwise always error out since it will not compile:
-      std::ostringstream ost;
-      ost << "AutoMoc: Error: " << Quoted(absFilename) << "\n"
-          << "The file contains a " << macroName
-          << " macro, but does not include "
-          << Quoted(scannedFileBasename + ".moc") << "!\n"
-          << "Consider adding the include or enabling SKIP_AUTOMOC for this "
-             "file.";
-      this->LogError(ost.str());
+      std::string emsg = "The file contains a ";
+      emsg += selfMacroName;
+      emsg += " macro, but does not include ";
+      emsg += cmQtAutoGen::Quoted(scanFileBase + ".moc");
+      emsg += "!\nConsider to\n - add #include \"";
+      emsg += scanFileBase;
+      emsg += ".moc\"\n - enable SKIP_AUTOMOC for this file";
+      this->LogFileError(cmQtAutoGen::MOC, absFilename, emsg);
       return false;
     }
   }
-
   return true;
 }
 
-void cmQtAutoGenerators::MocParseHeaderContent(
-  const std::string& absFilename, const std::string& contentText,
-  std::map<std::string, std::string>& mocsNotIncluded,
-  std::map<std::string, std::set<std::string> >& mocDepends)
+void cmQtAutoGenerators::MocParseHeaderContent(std::string const& absFilename,
+                                               std::string const& contentText)
 {
-  // Log
   if (this->Verbose) {
-    this->LogInfo("AutoMoc: Checking " + absFilename);
-  }
-  if (this->MocRequired(contentText)) {
-    // Register moc job
-    mocsNotIncluded[absFilename] =
-      this->ChecksumedPath(absFilename, "moc_", this->ConfigSuffix + ".cpp");
-    this->MocFindDepends(absFilename, contentText, mocDepends);
-  }
-}
-
-void cmQtAutoGenerators::SearchHeadersForSourceFile(
-  const std::string& absFilename, std::set<std::string>& mocHeaderFiles,
-  std::set<std::string>& uicHeaderFiles) const
-{
-  std::string basepaths[2];
-  {
-    std::string bpath = SubDirPrefix(absFilename);
-    bpath += cmsys::SystemTools::GetFilenameWithoutLastExtension(absFilename);
-    // search for default header files and private header files
-    basepaths[0] = bpath;
-    basepaths[1] = bpath + "_p";
-  }
-
-  for (const std::string* bpit = cmArrayBegin(basepaths);
-       bpit != cmArrayEnd(basepaths); ++bpit) {
-    std::string headerName;
-    if (this->FindHeader(headerName, *bpit)) {
-      // Moc headers
-      if (!this->MocSkip(absFilename) && !this->MocSkip(headerName)) {
-        mocHeaderFiles.insert(headerName);
-      }
-      // Uic headers
-      if (!this->UicSkip(absFilename) && !this->UicSkip(headerName)) {
-        uicHeaderFiles.insert(headerName);
-      }
-    }
-  }
-}
-
-bool cmQtAutoGenerators::ParseHeaders(
-  const std::set<std::string>& mocHeaderFiles,
-  const std::set<std::string>& uicHeaderFiles,
-  const std::map<std::string, std::string>& mocsIncluded,
-  std::map<std::string, std::string>& mocsNotIncluded,
-  std::map<std::string, std::set<std::string> >& mocDepends,
-  std::map<std::string, std::vector<std::string> >& uisIncluded)
-{
-  bool success = true;
-  // Merged header files list to read files only once
-  std::set<std::string> headerFiles;
-  headerFiles.insert(mocHeaderFiles.begin(), mocHeaderFiles.end());
-  headerFiles.insert(uicHeaderFiles.begin(), uicHeaderFiles.end());
-
-  for (std::set<std::string>::const_iterator hIt = headerFiles.begin();
-       hIt != headerFiles.end(); ++hIt) {
-    const std::string& headerName = *hIt;
-    std::string contentText;
-    if (ReadAll(contentText, headerName)) {
-      // Parse header content for MOC
-      if ((mocHeaderFiles.find(headerName) != mocHeaderFiles.end()) &&
-          (mocsIncluded.find(headerName) == mocsIncluded.end())) {
-        this->MocParseHeaderContent(headerName, contentText, mocsNotIncluded,
-                                    mocDepends);
-      }
-      // Parse header content for UIC
-      if (uicHeaderFiles.find(headerName) != uicHeaderFiles.end()) {
-        this->UicParseContent(headerName, contentText, uisIncluded);
+    this->LogInfo(cmQtAutoGen::MOC, "Checking: " + absFilename);
+  }
+
+  auto const fit =
+    std::find_if(this->MocJobsIncluded.cbegin(), this->MocJobsIncluded.cend(),
+                 [&absFilename](std::unique_ptr<MocJobIncluded> const& job) {
+                   return job->SourceFile == absFilename;
+                 });
+  if (fit == this->MocJobsIncluded.cend()) {
+    if (this->MocRequired(contentText)) {
+      auto job = cm::make_unique<MocJobAuto>();
+      job->SourceFile = absFilename;
+      {
+        std::string& bld = job->BuildFileRel;
+        bld = this->FilePathChecksum.getPart(absFilename);
+        bld += '/';
+        bld += "moc_";
+        bld += cmSystemTools::GetFilenameWithoutLastExtension(absFilename);
+        if (this->MultiConfig != cmQtAutoGen::SINGLE) {
+          bld += this->ConfigSuffix;
+        }
+        bld += ".cpp";
       }
-    } else {
-      std::ostringstream ost;
-      ost << "AutoGen: Error: Could not read header file:\n"
-          << Quoted(headerName);
-      this->LogError(ost.str());
-      success = false;
-      break;
+      this->MocFindDepends(absFilename, contentText, job->Depends);
+      this->MocJobsAuto.push_back(std::move(job));
     }
   }
-  return success;
 }
 
-bool cmQtAutoGenerators::MocGenerateAll(
-  const std::map<std::string, std::string>& mocsIncluded,
-  const std::map<std::string, std::string>& mocsNotIncluded,
-  const std::map<std::string, std::set<std::string> >& mocDepends)
+bool cmQtAutoGenerators::MocGenerateAll()
 {
   if (!this->MocEnabled()) {
     return true;
   }
 
-  // Look for name collisions
+  // Look for name collisions in included moc files
   {
-    std::multimap<std::string, std::string> collisions;
-    // Test merged map of included and notIncluded
-    std::map<std::string, std::string> mergedMocs(mocsIncluded);
-    mergedMocs.insert(mocsNotIncluded.begin(), mocsNotIncluded.end());
-    if (this->NameCollisionTest(mergedMocs, collisions)) {
-      std::ostringstream ost;
-      ost << "AutoMoc: Error: "
-             "The same moc file will be generated "
-             "from different sources.\n"
-             "To avoid this error either\n"
-             "- rename the source files or\n"
-             "- do not include the (moc_NAME.cpp|NAME.moc) file";
-      this->LogErrorNameCollision(ost.str(), collisions);
+    bool collision = false;
+    std::map<std::string, std::vector<MocJobIncluded const*>> collisions;
+    for (auto const& job : this->MocJobsIncluded) {
+      auto& list = collisions[job->IncludeString];
+      if (!list.empty()) {
+        collision = true;
+      }
+      list.push_back(job.get());
+    }
+    if (collision) {
+      std::string emsg =
+        "Included moc files with the same name will be "
+        "generated from different sources.\n"
+        "Consider to\n"
+        " - not include the \"moc_<NAME>.cpp\" file\n"
+        " - add a directory prefix to a \"<NAME>.moc\" include "
+        "(e.g \"sub/<NAME>.moc\")\n"
+        " - rename the source file(s)\n"
+        "Include conflicts\n"
+        "-----------------\n";
+      const auto& colls = collisions;
+      for (auto const& coll : colls) {
+        if (coll.second.size() > 1) {
+          emsg += cmQtAutoGen::Quoted(coll.first);
+          emsg += " included in\n";
+          for (const MocJobIncluded* job : coll.second) {
+            emsg += " - ";
+            emsg += cmQtAutoGen::Quoted(job->Includer);
+            emsg += "\n";
+          }
+          emsg += "would be generated from\n";
+          for (const MocJobIncluded* job : coll.second) {
+            emsg += " - ";
+            emsg += cmQtAutoGen::Quoted(job->SourceFile);
+            emsg += "\n";
+          }
+        }
+      }
+      this->LogError(cmQtAutoGen::MOC, emsg);
       return false;
     }
   }
 
-  // Generate moc_predefs
+  // (Re)generate moc_predefs.h on demand
   if (!this->MocPredefsCmd.empty()) {
     if (this->MocSettingsChanged ||
-        FileAbsentOrOlder(this->MocPredefsFileAbs, this->SettingsFile)) {
-      this->LogBold("Generating MOC predefs " + this->MocPredefsFileRel);
+        !cmSystemTools::FileExists(this->MocPredefsFileAbs)) {
+      if (this->Verbose) {
+        this->LogBold("Generating MOC predefs " + this->MocPredefsFileRel);
+      }
 
       std::string output;
       {
@@ -1263,149 +1396,200 @@ bool cmQtAutoGenerators::MocGenerateAll(
         cmd.insert(cmd.end(), this->MocIncludes.begin(),
                    this->MocIncludes.end());
         // Add definitions
-        for (std::vector<std::string>::const_iterator it =
-               this->MocDefinitions.begin();
-             it != this->MocDefinitions.end(); ++it) {
-          cmd.push_back("-D" + (*it));
+        for (std::string const& def : this->MocDefinitions) {
+          cmd.push_back("-D" + def);
         }
         // Execute command
-        if (!this->RunCommand(cmd, output, false)) {
-          {
-            std::ostringstream ost;
-            ost << "AutoMoc: Error: moc predefs generation command failed\n";
-            ost << "AutoMoc: Command:\n" << QuotedCommand(cmd) << "\n";
-            ost << "AutoMoc: Command output:\n" << output << "\n";
-            this->LogError(ost.str());
-          }
+        if (!this->RunCommand(cmd, output)) {
+          this->LogCommandError(cmQtAutoGen::MOC,
+                                "moc_predefs generation failed", cmd, output);
           return false;
         }
       }
+
       // (Re)write predefs file only on demand
       if (this->FileDiffers(this->MocPredefsFileAbs, output)) {
-        if (this->FileWrite("AutoMoc", this->MocPredefsFileAbs, output)) {
+        if (this->FileWrite(cmQtAutoGen::MOC, this->MocPredefsFileAbs,
+                            output)) {
           this->MocPredefsChanged = true;
         } else {
+          this->LogFileError(cmQtAutoGen::MOC, this->MocPredefsFileAbs,
+                             "moc_predefs file writing failed");
           return false;
         }
+      } else {
+        // Touch to update the time stamp
+        if (this->Verbose) {
+          this->LogInfo(cmQtAutoGen::MOC,
+                        "Touching moc_predefs " + this->MocPredefsFileRel);
+        }
+        cmSystemTools::Touch(this->MocPredefsFileAbs, false);
       }
     }
+
+    // Add moc_predefs.h to moc file dependecies
+    for (auto const& item : this->MocJobsIncluded) {
+      item->Depends.insert(this->MocPredefsFileAbs);
+    }
+    for (auto const& item : this->MocJobsAuto) {
+      item->Depends.insert(this->MocPredefsFileAbs);
+    }
   }
 
   // Generate moc files that are included by source files.
-  for (std::map<std::string, std::string>::const_iterator it =
-         mocsIncluded.begin();
-       it != mocsIncluded.end(); ++it) {
-    if (!this->MocGenerateFile(it->first, it->second, mocDepends, true)) {
-      if (this->MocRunFailed) {
-        return false;
-      }
+  for (auto const& item : this->MocJobsIncluded) {
+    if (!this->MocGenerateFile(*item)) {
+      return false;
     }
   }
-
   // Generate moc files that are _not_ included by source files.
-  bool mocCompFileGenerated = false;
-  for (std::map<std::string, std::string>::const_iterator it =
-         mocsNotIncluded.begin();
-       it != mocsNotIncluded.end(); ++it) {
-    if (this->MocGenerateFile(it->first, it->second, mocDepends, false)) {
-      mocCompFileGenerated = true;
-    } else {
-      if (this->MocRunFailed) {
-        return false;
-      }
+  bool autoNameGenerated = false;
+  for (auto const& item : this->MocJobsAuto) {
+    if (!this->MocGenerateFile(*item, &autoNameGenerated)) {
+      return false;
     }
   }
 
   // Compose mocs compilation file content
-  std::string automocSource;
   {
-    std::ostringstream ost;
-    ost << "/* This file is autogenerated, do not edit*/\n";
-    if (mocsNotIncluded.empty()) {
-      // Dummy content
-      ost << "enum some_compilers { need_more_than_nothing };\n";
+    std::string mocs =
+      "// This file is autogenerated. Changes will be overwritten.\n";
+    if (this->MocJobsAuto.empty()) {
+      // Placeholder content
+      mocs +=
+        "// No files found that require moc or the moc files are included\n";
+      mocs += "enum some_compilers { need_more_than_nothing };\n";
     } else {
       // Valid content
-      for (std::map<std::string, std::string>::const_iterator it =
-             mocsNotIncluded.begin();
-           it != mocsNotIncluded.end(); ++it) {
-        ost << "#include \"" << it->second << "\"\n";
+      for (const auto& item : this->MocJobsAuto) {
+        mocs += "#include \"";
+        mocs += item->BuildFileRel;
+        mocs += "\"\n";
       }
     }
-    automocSource = ost.str();
-  }
 
-  if (this->FileDiffers(this->MocCompFileAbs, automocSource)) {
-    // Actually write mocs compilation file
-    this->LogBold("Generating MOC compilation " + this->MocCompFileRel);
-    if (!this->FileWrite("AutoMoc", this->MocCompFileAbs, automocSource)) {
-      return false;
-    }
-  } else if (mocCompFileGenerated) {
-    // Only touch mocs compilation file
-    if (this->Verbose) {
-      this->LogInfo("Touching MOC compilation " + this->MocCompFileRel);
+    if (this->FileDiffers(this->MocCompFileAbs, mocs)) {
+      // Actually write mocs compilation file
+      if (this->Verbose) {
+        this->LogBold("Generating MOC compilation " + this->MocCompFileRel);
+      }
+      if (!this->FileWrite(cmQtAutoGen::MOC, this->MocCompFileAbs, mocs)) {
+        this->LogFileError(cmQtAutoGen::MOC, this->MocCompFileAbs,
+                           "mocs compilation file writing failed");
+        return false;
+      }
+    } else if (autoNameGenerated) {
+      // Only touch mocs compilation file
+      if (this->Verbose) {
+        this->LogInfo(cmQtAutoGen::MOC,
+                      "Touching mocs compilation " + this->MocCompFileRel);
+      }
+      cmSystemTools::Touch(this->MocCompFileAbs, false);
     }
-    cmSystemTools::Touch(this->MocCompFileAbs, false);
   }
 
   return true;
 }
 
 /**
- * @return True if a moc file was created. False may indicate an error.
+ * @return True on success
  */
-bool cmQtAutoGenerators::MocGenerateFile(
-  const std::string& sourceFile, const std::string& mocFileName,
-  const std::map<std::string, std::set<std::string> >& mocDepends,
-  bool included)
+bool cmQtAutoGenerators::MocGenerateFile(const MocJobAuto& mocJob,
+                                         bool* generated)
 {
-  bool mocGenerated = false;
-  bool generateMoc = this->MocSettingsChanged || this->MocPredefsChanged;
-
-  const std::string mocFileRel =
-    included ? (this->AutogenIncludeDir + mocFileName) : mocFileName;
-  const std::string mocFileAbs =
-    cmSystemTools::CollapseCombinedPath(this->AutogenBuildDir, mocFileRel);
-
-  if (!generateMoc) {
-    // Test if the source file is newer that the build file
-    generateMoc = FileAbsentOrOlder(mocFileAbs, sourceFile);
-    if (!generateMoc) {
-      // Test if a dependency file changed
-      std::map<std::string, std::set<std::string> >::const_iterator dit =
-        mocDepends.find(sourceFile);
-      if (dit != mocDepends.end()) {
-        for (std::set<std::string>::const_iterator fit = dit->second.begin();
-             fit != dit->second.end(); ++fit) {
-          if (FileAbsentOrOlder(mocFileAbs, *fit)) {
-            generateMoc = true;
-            break;
-          }
+  bool success = true;
+
+  std::string const mocFileAbs = cmSystemTools::CollapseCombinedPath(
+    this->AutogenBuildDir, mocJob.BuildFileRel);
+
+  bool generate = false;
+  std::string generateReason;
+  if (!generate && !cmSystemTools::FileExists(mocFileAbs.c_str())) {
+    if (this->Verbose) {
+      generateReason = "Generating ";
+      generateReason += cmQtAutoGen::Quoted(mocFileAbs);
+      generateReason += " from its source file ";
+      generateReason += cmQtAutoGen::Quoted(mocJob.SourceFile);
+      generateReason += " because it doesn't exist";
+    }
+    generate = true;
+  }
+  if (!generate && this->MocSettingsChanged) {
+    if (this->Verbose) {
+      generateReason = "Generating ";
+      generateReason += cmQtAutoGen::Quoted(mocFileAbs);
+      generateReason += " from ";
+      generateReason += cmQtAutoGen::Quoted(mocJob.SourceFile);
+      generateReason += " because the MOC settings changed";
+    }
+    generate = true;
+  }
+  if (!generate && this->MocPredefsChanged) {
+    if (this->Verbose) {
+      generateReason = "Generating ";
+      generateReason += cmQtAutoGen::Quoted(mocFileAbs);
+      generateReason += " from ";
+      generateReason += cmQtAutoGen::Quoted(mocJob.SourceFile);
+      generateReason += " because moc_predefs.h changed";
+    }
+    generate = true;
+  }
+  if (!generate) {
+    std::string error;
+    if (FileIsOlderThan(mocFileAbs, mocJob.SourceFile, &error)) {
+      if (this->Verbose) {
+        generateReason = "Generating ";
+        generateReason += cmQtAutoGen::Quoted(mocFileAbs);
+        generateReason += " because it's older than its source file ";
+        generateReason += cmQtAutoGen::Quoted(mocJob.SourceFile);
+      }
+      generate = true;
+    } else {
+      if (!error.empty()) {
+        this->LogError(cmQtAutoGen::MOC, error);
+        success = false;
+      }
+    }
+  }
+  if (success && !generate) {
+    // Test if a dependency file is newer
+    std::string error;
+    for (std::string const& depFile : mocJob.Depends) {
+      if (FileIsOlderThan(mocFileAbs, depFile, &error)) {
+        if (this->Verbose) {
+          generateReason = "Generating ";
+          generateReason += cmQtAutoGen::Quoted(mocFileAbs);
+          generateReason += " from ";
+          generateReason += cmQtAutoGen::Quoted(mocJob.SourceFile);
+          generateReason += " because it is older than ";
+          generateReason += cmQtAutoGen::Quoted(depFile);
         }
+        generate = true;
+        break;
+      }
+      if (!error.empty()) {
+        this->LogError(cmQtAutoGen::MOC, error);
+        success = false;
+        break;
       }
     }
   }
-  if (generateMoc) {
+
+  if (generate) {
     // Log
-    this->LogBold("Generating MOC source " + mocFileRel);
+    if (this->Verbose) {
+      this->LogBold("Generating MOC source " + mocJob.BuildFileRel);
+      this->LogInfo(cmQtAutoGen::MOC, generateReason);
+    }
 
     // Make sure the parent directory exists
-    if (this->MakeParentDirectory("AutoMoc", mocFileAbs)) {
+    if (this->MakeParentDirectory(cmQtAutoGen::MOC, mocFileAbs)) {
       // Compose moc command
       std::vector<std::string> cmd;
       cmd.push_back(this->MocExecutable);
-      // Add includes
-      cmd.insert(cmd.end(), this->MocIncludes.begin(),
-                 this->MocIncludes.end());
-      // Add definitions
-      for (std::vector<std::string>::const_iterator it =
-             this->MocDefinitions.begin();
-           it != this->MocDefinitions.end(); ++it) {
-        cmd.push_back("-D" + (*it));
-      }
       // Add options
-      cmd.insert(cmd.end(), this->MocOptions.begin(), this->MocOptions.end());
+      cmd.insert(cmd.end(), this->MocAllOptions.begin(),
+                 this->MocAllOptions.end());
       // Add predefs include
       if (!this->MocPredefsFileAbs.empty()) {
         cmd.push_back("--include");
@@ -1413,47 +1597,119 @@ bool cmQtAutoGenerators::MocGenerateFile(
       }
       cmd.push_back("-o");
       cmd.push_back(mocFileAbs);
-      cmd.push_back(sourceFile);
+      cmd.push_back(mocJob.SourceFile);
 
       // Execute moc command
       std::string output;
       if (this->RunCommand(cmd, output)) {
         // Success
-        mocGenerated = true;
+        if (generated != nullptr) {
+          *generated = true;
+        }
       } else {
-        // Command failed
+        // Moc command failed
         {
-          std::ostringstream ost;
-          ost << "AutoMoc: Error: moc process failed for\n";
-          ost << Quoted(mocFileRel) << "\n";
-          ost << "AutoMoc: Command:\n" << QuotedCommand(cmd) << "\n";
-          ost << "AutoMoc: Command output:\n" << output << "\n";
-          this->LogError(ost.str());
+          std::string emsg = "moc failed for\n  ";
+          emsg += cmQtAutoGen::Quoted(mocJob.SourceFile);
+          this->LogCommandError(cmQtAutoGen::MOC, emsg, cmd, output);
         }
         cmSystemTools::RemoveFile(mocFileAbs);
-        this->MocRunFailed = true;
+        success = false;
       }
     } else {
       // Parent directory creation failed
-      this->MocRunFailed = true;
+      success = false;
+    }
+  }
+  return success;
+}
+
+/**
+ * @brief Tests if the file name is in the skip list
+ */
+bool cmQtAutoGenerators::UicSkip(std::string const& absFilename) const
+{
+  if (this->UicEnabled()) {
+    // Test if the file name is on the skip list
+    if (!ListContains(this->UicSkipList, absFilename)) {
+      return false;
+    }
+  }
+  return true;
+}
+
+bool cmQtAutoGenerators::UicParseContent(std::string const& absFilename,
+                                         std::string const& contentText)
+{
+  if (this->Verbose) {
+    this->LogInfo(cmQtAutoGen::UIC, "Checking: " + absFilename);
+  }
+
+  std::vector<std::string> includes;
+  // Extracte includes
+  {
+    const char* contentChars = contentText.c_str();
+    if (strstr(contentChars, "ui_") != nullptr) {
+      while (this->UicRegExpInclude.find(contentChars)) {
+        includes.push_back(this->UicRegExpInclude.match(1));
+        contentChars += this->UicRegExpInclude.end();
+      }
+    }
+  }
+
+  for (std::string const& includeString : includes) {
+    std::string uiInputFile;
+    if (!UicFindIncludedFile(uiInputFile, absFilename, includeString)) {
+      return false;
+    }
+    // Check if this file should be skipped
+    if (this->UicSkip(uiInputFile)) {
+      continue;
+    }
+    // Check if the job already exists
+    bool jobExists = false;
+    for (const auto& job : this->UicJobs) {
+      if ((job->SourceFile == uiInputFile) &&
+          (job->IncludeString == includeString)) {
+        jobExists = true;
+        break;
+      }
+    }
+    if (!jobExists) {
+      auto job = cm::make_unique<UicJob>();
+      job->SourceFile = uiInputFile;
+      job->BuildFileRel = this->AutogenIncludeDir;
+      job->BuildFileRel += includeString;
+      job->Includer = absFilename;
+      job->IncludeString = includeString;
+      this->UicJobs.push_back(std::move(job));
     }
   }
-  return mocGenerated;
+
+  return true;
 }
 
 bool cmQtAutoGenerators::UicFindIncludedFile(std::string& absFile,
-                                             const std::string& sourceFile,
-                                             const std::string& searchPath,
-                                             const std::string& searchFile)
+                                             std::string const& sourceFile,
+                                             std::string const& includeString)
 {
   bool success = false;
-  std::vector<std::string> testFiles;
+  std::string searchFile =
+    cmSystemTools::GetFilenameWithoutLastExtension(includeString).substr(3);
+  searchFile += ".ui";
   // Collect search paths list
+  std::vector<std::string> testFiles;
   {
-    const std::string searchFileFull = searchPath + searchFile;
+    std::string const searchPath = SubDirPrefix(includeString);
+
+    std::string searchFileFull;
+    if (!searchPath.empty()) {
+      searchFileFull = searchPath;
+      searchFileFull += searchFile;
+    }
     // Vicinity of the source
     {
-      const std::string sourcePath = SubDirPrefix(sourceFile);
+      std::string const sourcePath = SubDirPrefix(sourceFile);
       testFiles.push_back(sourcePath + searchFile);
       if (!searchPath.empty()) {
         testFiles.push_back(sourcePath + searchFileFull);
@@ -1461,27 +1717,21 @@ bool cmQtAutoGenerators::UicFindIncludedFile(std::string& absFile,
     }
     // AUTOUIC search paths
     if (!this->UicSearchPaths.empty()) {
-      for (std::vector<std::string>::const_iterator iit =
-             this->UicSearchPaths.begin();
-           iit != this->UicSearchPaths.end(); ++iit) {
-        testFiles.push_back(*iit + "/" + searchFile);
+      for (std::string const& sPath : this->UicSearchPaths) {
+        testFiles.push_back((sPath + "/").append(searchFile));
       }
       if (!searchPath.empty()) {
-        for (std::vector<std::string>::const_iterator iit =
-               this->UicSearchPaths.begin();
-             iit != this->UicSearchPaths.end(); ++iit) {
-          testFiles.push_back(*iit + "/" + searchFileFull);
+        for (std::string const& sPath : this->UicSearchPaths) {
+          testFiles.push_back((sPath + "/").append(searchFileFull));
         }
       }
     }
   }
 
   // Search for the .ui file!
-  for (std::vector<std::string>::const_iterator iit = testFiles.begin();
-       iit != testFiles.end(); ++iit) {
-    const std::string& testFile = *iit;
-    if (cmsys::SystemTools::FileExists(testFile.c_str())) {
-      absFile = cmsys::SystemTools::GetRealPath(testFile);
+  for (std::string const& testFile : testFiles) {
+    if (cmSystemTools::FileExists(testFile.c_str())) {
+      absFile = cmSystemTools::GetRealPath(testFile);
       success = true;
       break;
     }
@@ -1489,84 +1739,75 @@ bool cmQtAutoGenerators::UicFindIncludedFile(std::string& absFile,
 
   // Log error
   if (!success) {
-    std::ostringstream ost;
-    ost << "AutoUic: Error: " << Quoted(sourceFile) << "\n";
-    ost << "Could not find " << Quoted(searchFile) << " in\n";
-    for (std::vector<std::string>::const_iterator iit = testFiles.begin();
-         iit != testFiles.end(); ++iit) {
-      ost << "  " << Quoted(*iit) << "\n";
+    std::string emsg = "Could not find ";
+    emsg += cmQtAutoGen::Quoted(searchFile);
+    emsg += " in\n";
+    for (std::string const& testFile : testFiles) {
+      emsg += "  ";
+      emsg += cmQtAutoGen::Quoted(testFile);
+      emsg += "\n";
     }
-    this->LogError(ost.str());
+    this->LogFileError(cmQtAutoGen::UIC, sourceFile, emsg);
   }
 
   return success;
 }
 
-bool cmQtAutoGenerators::UicGenerateAll(
-  const std::map<std::string, std::vector<std::string> >& uisIncluded)
+bool cmQtAutoGenerators::UicGenerateAll()
 {
   if (!this->UicEnabled()) {
     return true;
   }
 
-  // single map with input / output names
-  std::map<std::string, std::map<std::string, std::string> > sourceGenMap;
+  // Look for name collisions in included uic files
   {
-    // Collision lookup map
-    std::map<std::string, std::string> testMap;
-    // Compile maps
-    for (std::map<std::string, std::vector<std::string> >::const_iterator sit =
-           uisIncluded.begin();
-         sit != uisIncluded.end(); ++sit) {
-      const std::string& source(sit->first);
-      const std::vector<std::string>& sourceIncs(sit->second);
-      // insert new source/destination map
-      std::map<std::string, std::string>& uiGenMap = sourceGenMap[source];
-      for (std::vector<std::string>::const_iterator uit = sourceIncs.begin();
-           uit != sourceIncs.end(); ++uit) {
-        // Remove ui_ from the begin filename by substr()
-        const std::string uiBasePath = SubDirPrefix(*uit);
-        const std::string uiBaseName =
-          cmsys::SystemTools::GetFilenameWithoutLastExtension(*uit).substr(3);
-        const std::string uiFileName = uiBaseName + ".ui";
-        std::string uiInputFile;
-        if (UicFindIncludedFile(uiInputFile, source, uiBasePath, uiFileName)) {
-          std::string uiOutputFile = uiBasePath + "ui_" + uiBaseName + ".h";
-          cmSystemTools::ReplaceString(uiOutputFile, "..", "__");
-          uiGenMap[uiInputFile] = uiOutputFile;
-          testMap[uiInputFile] = uiOutputFile;
-        } else {
-          return false;
-        }
+    bool collision = false;
+    std::map<std::string, std::vector<UicJob const*>> collisions;
+    for (auto const& job : this->UicJobs) {
+      auto& list = collisions[job->IncludeString];
+      if (!list.empty()) {
+        collision = true;
       }
-    }
-    // look for name collisions
-    {
-      std::multimap<std::string, std::string> collisions;
-      if (this->NameCollisionTest(testMap, collisions)) {
-        std::ostringstream ost;
-        ost << "AutoUic: Error: The same ui_NAME.h file will be generated "
-               "from different sources.\n"
-               "To avoid this error rename the source files.\n";
-        this->LogErrorNameCollision(ost.str(), collisions);
-        return false;
+      list.push_back(job.get());
+    }
+    if (collision) {
+      std::string emsg =
+        "Included uic files with the same name will be "
+        "generated from different sources.\n"
+        "Consider to\n"
+        " - add a directory prefix to a \"ui_<NAME>.h\" include "
+        "(e.g \"sub/ui_<NAME>.h\")\n"
+        " - rename the <NAME>.ui file(s) and adjust the \"ui_<NAME>.h\" "
+        "include(s)\n"
+        "Include conflicts\n"
+        "-----------------\n";
+      const auto& colls = collisions;
+      for (auto const& coll : colls) {
+        if (coll.second.size() > 1) {
+          emsg += cmQtAutoGen::Quoted(coll.first);
+          emsg += " included in\n";
+          for (const UicJob* job : coll.second) {
+            emsg += " - ";
+            emsg += cmQtAutoGen::Quoted(job->Includer);
+            emsg += "\n";
+          }
+          emsg += "would be generated from\n";
+          for (const UicJob* job : coll.second) {
+            emsg += " - ";
+            emsg += cmQtAutoGen::Quoted(job->SourceFile);
+            emsg += "\n";
+          }
+        }
       }
+      this->LogError(cmQtAutoGen::UIC, emsg);
+      return false;
     }
   }
 
-  // generate ui files
-  for (std::map<std::string,
-                std::map<std::string, std::string> >::const_iterator it =
-         sourceGenMap.begin();
-       it != sourceGenMap.end(); ++it) {
-    for (std::map<std::string, std::string>::const_iterator sit =
-           it->second.begin();
-         sit != it->second.end(); ++sit) {
-      if (!this->UicGenerateFile(it->first, sit->first, sit->second)) {
-        if (this->UicRunFailed) {
-          return false;
-        }
-      }
+  // Generate ui header files
+  for (const auto& item : this->UicJobs) {
+    if (!this->UicGenerateFile(*item)) {
+      return false;
     }
   }
 
@@ -1574,71 +1815,100 @@ bool cmQtAutoGenerators::UicGenerateAll(
 }
 
 /**
- * @return True if a uic file was created. False may indicate an error.
+ * @return True on success
  */
-bool cmQtAutoGenerators::UicGenerateFile(const std::string& realName,
-                                         const std::string& uiInputFile,
-                                         const std::string& uiOutputFile)
+bool cmQtAutoGenerators::UicGenerateFile(const UicJob& uicJob)
 {
-  bool uicGenerated = false;
-  bool generateUic = this->UicSettingsChanged;
+  bool success = true;
 
-  const std::string uicFileRel = this->AutogenIncludeDir + uiOutputFile;
-  const std::string uicFileAbs =
-    cmSystemTools::CollapseCombinedPath(this->AutogenBuildDir, uicFileRel);
+  std::string const uicFileAbs = cmSystemTools::CollapseCombinedPath(
+    this->AutogenBuildDir, uicJob.BuildFileRel);
 
-  if (!generateUic) {
-    // Test if the source file is newer that the build file
-    generateUic = FileAbsentOrOlder(uicFileAbs, uiInputFile);
+  bool generate = false;
+  std::string generateReason;
+  if (!generate && !cmSystemTools::FileExists(uicFileAbs.c_str())) {
+    if (this->Verbose) {
+      generateReason = "Generating ";
+      generateReason += cmQtAutoGen::Quoted(uicFileAbs);
+      generateReason += " from its source file ";
+      generateReason += cmQtAutoGen::Quoted(uicJob.SourceFile);
+      generateReason += " because it doesn't exist";
+    }
+    generate = true;
+  }
+  if (!generate && this->UicSettingsChanged) {
+    if (this->Verbose) {
+      generateReason = "Generating ";
+      generateReason += cmQtAutoGen::Quoted(uicFileAbs);
+      generateReason += " from ";
+      generateReason += cmQtAutoGen::Quoted(uicJob.SourceFile);
+      generateReason += " because the UIC settings changed";
+    }
+    generate = true;
+  }
+  if (!generate) {
+    std::string error;
+    if (FileIsOlderThan(uicFileAbs, uicJob.SourceFile, &error)) {
+      if (this->Verbose) {
+        generateReason = "Generating ";
+        generateReason += cmQtAutoGen::Quoted(uicFileAbs);
+        generateReason += " because it's older than its source file ";
+        generateReason += cmQtAutoGen::Quoted(uicJob.SourceFile);
+      }
+      generate = true;
+    } else {
+      if (!error.empty()) {
+        this->LogError(cmQtAutoGen::UIC, error);
+        success = false;
+      }
+    }
   }
-  if (generateUic) {
+  if (generate) {
     // Log
-    this->LogBold("Generating UIC header " + uicFileRel);
+    if (this->Verbose) {
+      this->LogBold("Generating UIC header " + uicJob.BuildFileRel);
+      this->LogInfo(cmQtAutoGen::UIC, generateReason);
+    }
 
     // Make sure the parent directory exists
-    if (this->MakeParentDirectory("AutoUic", uicFileAbs)) {
+    if (this->MakeParentDirectory(cmQtAutoGen::UIC, uicFileAbs)) {
       // Compose uic command
       std::vector<std::string> cmd;
       cmd.push_back(this->UicExecutable);
       {
         std::vector<std::string> allOpts = this->UicTargetOptions;
-        std::map<std::string, std::string>::const_iterator optionIt =
-          this->UicOptions.find(uiInputFile);
+        auto optionIt = this->UicOptions.find(uicJob.SourceFile);
         if (optionIt != this->UicOptions.end()) {
-          std::vector<std::string> fileOpts;
-          cmSystemTools::ExpandListArgument(optionIt->second, fileOpts);
-          UicMergeOptions(allOpts, fileOpts, (this->QtMajorVersion == "5"));
+          cmQtAutoGen::UicMergeOptions(allOpts, optionIt->second,
+                                       (this->QtMajorVersion == "5"));
         }
         cmd.insert(cmd.end(), allOpts.begin(), allOpts.end());
       }
       cmd.push_back("-o");
       cmd.push_back(uicFileAbs);
-      cmd.push_back(uiInputFile);
+      cmd.push_back(uicJob.SourceFile);
 
       std::string output;
       if (this->RunCommand(cmd, output)) {
         // Success
-        uicGenerated = true;
       } else {
         // Command failed
         {
-          std::ostringstream ost;
-          ost << "AutoUic: Error: uic process failed for\n";
-          ost << Quoted(uicFileRel) << " needed by\n";
-          ost << Quoted(realName) << "\n";
-          ost << "AutoUic: Command:\n" << QuotedCommand(cmd) << "\n";
-          ost << "AutoUic: Command output:\n" << output << "\n";
-          this->LogError(ost.str());
+          std::string emsg = "uic failed for\n  ";
+          emsg += cmQtAutoGen::Quoted(uicJob.SourceFile);
+          emsg += "\nincluded by\n  ";
+          emsg += cmQtAutoGen::Quoted(uicJob.Includer);
+          this->LogCommandError(cmQtAutoGen::UIC, emsg, cmd, output);
         }
         cmSystemTools::RemoveFile(uicFileAbs);
-        this->UicRunFailed = true;
+        success = false;
       }
     } else {
       // Parent directory creation failed
-      this->UicRunFailed = true;
+      success = false;
     }
   }
-  return uicGenerated;
+  return success;
 }
 
 bool cmQtAutoGenerators::RccGenerateAll()
@@ -1647,322 +1917,375 @@ bool cmQtAutoGenerators::RccGenerateAll()
     return true;
   }
 
-  // generate single map with input / output names
-  std::map<std::string, std::string> qrcGenMap;
-  {
-    const std::string qrcPrefix = "qrc_";
-    const std::string qrcSuffix = this->ConfigSuffix + ".cpp";
-    for (std::vector<std::string>::const_iterator si =
-           this->RccSources.begin();
-         si != this->RccSources.end(); ++si) {
-      const std::string ext =
-        cmsys::SystemTools::GetFilenameLastExtension(*si);
-      if (ext == ".qrc") {
-        qrcGenMap[*si] = this->ChecksumedPath(*si, qrcPrefix, qrcSuffix);
-      }
-    }
-  }
-
-  // look for name collisions
-  {
-    std::multimap<std::string, std::string> collisions;
-    if (this->NameCollisionTest(qrcGenMap, collisions)) {
-      std::ostringstream ost;
-      ost << "AutoRcc: Error: The same qrc_NAME.cpp file"
-             " will be generated from different sources.\n"
-             "To avoid this error rename the source .qrc files.\n";
-      this->LogErrorNameCollision(ost.str(), collisions);
+  // Generate rcc files
+  for (const RccJob& rccJob : this->RccJobs) {
+    if (!this->RccGenerateFile(rccJob)) {
       return false;
     }
   }
-
-  // generate qrc files
-  for (std::map<std::string, std::string>::const_iterator si =
-         qrcGenMap.begin();
-       si != qrcGenMap.end(); ++si) {
-    bool unique = FileNameIsUnique(si->first, qrcGenMap);
-    if (!this->RccGenerateFile(si->first, si->second, unique)) {
-      if (this->RccRunFailed) {
-        return false;
-      }
-    }
-  }
   return true;
 }
 
 /**
- * @return True if a rcc file was created. False may indicate an error.
+ * @return True on success
  */
-bool cmQtAutoGenerators::RccGenerateFile(const std::string& rccInputFile,
-                                         const std::string& rccOutputFile,
-                                         bool unique_n)
+bool cmQtAutoGenerators::RccGenerateFile(const RccJob& rccJob)
 {
+  bool success = true;
   bool rccGenerated = false;
-  bool generateRcc = this->RccSettingsChanged;
-
-  const std::string rccBuildFile =
-    cmSystemTools::CollapseCombinedPath(this->AutogenBuildDir, rccOutputFile);
-
-  if (!generateRcc) {
-    // Test if the resources list file is newer than build file
-    generateRcc = FileAbsentOrOlder(rccBuildFile, rccInputFile);
-    if (!generateRcc) {
-      // Acquire input file list
-      std::vector<std::string> readFiles;
-      const std::vector<std::string>* files = &this->RccInputs[rccInputFile];
-      if (files->empty()) {
-        // Read input file list from qrc file
-        std::string error;
-        if (cmQtAutoGeneratorCommon::RccListInputs(
-              this->QtMajorVersion, this->RccExecutable, rccInputFile,
-              readFiles, &error)) {
-          files = &readFiles;
-        } else {
-          files = CM_NULLPTR;
-          this->LogError(error);
-          this->RccRunFailed = true;
-        }
+
+  std::string rccFileAbs;
+  {
+    std::string suffix;
+    switch (this->MultiConfig) {
+      case cmQtAutoGen::SINGLE:
+        break;
+      case cmQtAutoGen::WRAP:
+        suffix = "_CMAKE";
+        suffix += this->ConfigSuffix;
+        suffix += "_";
+        break;
+      case cmQtAutoGen::FULL:
+        suffix = this->ConfigSuffix;
+        break;
+    }
+    rccFileAbs = cmQtAutoGen::AppendFilenameSuffix(rccJob.RccFile, suffix);
+  }
+  std::string const rccFileRel = cmSystemTools::RelativePath(
+    this->AutogenBuildDir.c_str(), rccFileAbs.c_str());
+
+  // Check if regeneration is required
+  bool generate = false;
+  std::string generateReason;
+  if (!cmSystemTools::FileExists(rccJob.QrcFile)) {
+    {
+      std::string error = "Could not find the file\n  ";
+      error += cmQtAutoGen::Quoted(rccJob.QrcFile);
+      this->LogError(cmQtAutoGen::RCC, error);
+    }
+    success = false;
+  }
+  if (success && !generate && !cmSystemTools::FileExists(rccFileAbs.c_str())) {
+    if (this->Verbose) {
+      generateReason = "Generating ";
+      generateReason += cmQtAutoGen::Quoted(rccFileAbs);
+      generateReason += " from its source file ";
+      generateReason += cmQtAutoGen::Quoted(rccJob.QrcFile);
+      generateReason += " because it doesn't exist";
+    }
+    generate = true;
+  }
+  if (success && !generate && this->RccSettingsChanged) {
+    if (this->Verbose) {
+      generateReason = "Generating ";
+      generateReason += cmQtAutoGen::Quoted(rccFileAbs);
+      generateReason += " from ";
+      generateReason += cmQtAutoGen::Quoted(rccJob.QrcFile);
+      generateReason += " because the RCC settings changed";
+    }
+    generate = true;
+  }
+  if (success && !generate) {
+    std::string error;
+    if (FileIsOlderThan(rccFileAbs, rccJob.QrcFile, &error)) {
+      if (this->Verbose) {
+        generateReason = "Generating ";
+        generateReason += cmQtAutoGen::Quoted(rccFileAbs);
+        generateReason += " because it is older than ";
+        generateReason += cmQtAutoGen::Quoted(rccJob.QrcFile);
+      }
+      generate = true;
+    } else {
+      if (!error.empty()) {
+        this->LogError(cmQtAutoGen::RCC, error);
+        success = false;
+      }
+    }
+  }
+  if (success && !generate) {
+    // Acquire input file list
+    std::vector<std::string> readFiles;
+    std::vector<std::string> const* files = nullptr;
+    if (!rccJob.Inputs.empty()) {
+      files = &rccJob.Inputs;
+    } else {
+      // Read input file list from qrc file
+      std::string error;
+      if (cmQtAutoGen::RccListInputs(this->QtMajorVersion, this->RccExecutable,
+                                     rccJob.QrcFile, readFiles, &error)) {
+        files = &readFiles;
+      } else {
+        this->LogFileError(cmQtAutoGen::RCC, rccJob.QrcFile, error);
+        success = false;
       }
-      // Test if any input file is newer than the build file
-      if (files != CM_NULLPTR) {
-        for (std::vector<std::string>::const_iterator it = files->begin();
-             it != files->end(); ++it) {
-          if (FileAbsentOrOlder(rccBuildFile, *it)) {
-            generateRcc = true;
-            break;
+    }
+    // Test if any input file is newer than the build file
+    if (files != nullptr) {
+      std::string error;
+      for (std::string const& resFile : *files) {
+        if (!cmSystemTools::FileExists(resFile.c_str())) {
+          error = "Could not find the file\n  ";
+          error += cmQtAutoGen::Quoted(resFile);
+          error += "\nwhich is listed in\n  ";
+          error += cmQtAutoGen::Quoted(rccJob.QrcFile);
+          break;
+        }
+        if (FileIsOlderThan(rccFileAbs, resFile, &error)) {
+          if (this->Verbose) {
+            generateReason = "Generating ";
+            generateReason += cmQtAutoGen::Quoted(rccFileAbs);
+            generateReason += " from ";
+            generateReason += cmQtAutoGen::Quoted(rccJob.QrcFile);
+            generateReason += " because it is older than ";
+            generateReason += cmQtAutoGen::Quoted(resFile);
           }
+          generate = true;
+          break;
+        }
+        if (!error.empty()) {
+          break;
         }
       }
+      // Print error
+      if (!error.empty()) {
+        this->LogError(cmQtAutoGen::RCC, error);
+        success = false;
+      }
     }
   }
-  if (generateRcc) {
+  // Regenerate on demand
+  if (generate) {
     // Log
-    this->LogBold("Generating RCC source " + rccOutputFile);
+    if (this->Verbose) {
+      this->LogBold("Generating RCC source " + rccFileRel);
+      this->LogInfo(cmQtAutoGen::RCC, generateReason);
+    }
 
     // Make sure the parent directory exists
-    if (this->MakeParentDirectory("AutoRcc", rccBuildFile)) {
-      // Compose symbol name
-      std::string symbolName =
-        cmsys::SystemTools::GetFilenameWithoutLastExtension(rccInputFile);
-      if (!unique_n) {
-        symbolName += "_";
-        symbolName += FPathChecksum.getPart(rccInputFile);
-      }
-      // Replace '-' with '_'. The former is valid for
-      // file names but not for symbol names.
-      std::replace(symbolName.begin(), symbolName.end(), '-', '_');
-
+    if (this->MakeParentDirectory(cmQtAutoGen::RCC, rccFileAbs)) {
       // Compose rcc command
       std::vector<std::string> cmd;
       cmd.push_back(this->RccExecutable);
-      {
-        std::map<std::string, std::string>::const_iterator optionIt =
-          this->RccOptions.find(rccInputFile);
-        if (optionIt != this->RccOptions.end()) {
-          cmSystemTools::ExpandListArgument(optionIt->second, cmd);
-        }
-      }
-      cmd.push_back("-name");
-      cmd.push_back(symbolName);
+      cmd.insert(cmd.end(), rccJob.Options.begin(), rccJob.Options.end());
       cmd.push_back("-o");
-      cmd.push_back(rccBuildFile);
-      cmd.push_back(rccInputFile);
+      cmd.push_back(rccFileAbs);
+      cmd.push_back(rccJob.QrcFile);
 
       std::string output;
       if (this->RunCommand(cmd, output)) {
         // Success
         rccGenerated = true;
       } else {
-        // Command failed
         {
-          std::ostringstream ost;
-          ost << "AutoRcc: Error: rcc process failed for\n";
-          ost << Quoted(rccOutputFile) << "\n";
-          ost << "AutoRcc: Command:\n" << QuotedCommand(cmd) << "\n";
-          ost << "AutoRcc: Command output:\n" << output << "\n";
-          this->LogError(ost.str());
+          std::string emsg = "rcc failed for\n  ";
+          emsg += cmQtAutoGen::Quoted(rccJob.QrcFile);
+          this->LogCommandError(cmQtAutoGen::RCC, emsg, cmd, output);
         }
-        cmSystemTools::RemoveFile(rccBuildFile);
-        this->RccRunFailed = true;
+        cmSystemTools::RemoveFile(rccFileAbs);
+        success = false;
       }
     } else {
       // Parent directory creation failed
-      this->RccRunFailed = true;
+      success = false;
     }
   }
-  return rccGenerated;
-}
 
-void cmQtAutoGenerators::LogErrorNameCollision(
-  const std::string& message,
-  const std::multimap<std::string, std::string>& collisions) const
-{
-  typedef std::multimap<std::string, std::string>::const_iterator Iter;
-
-  std::ostringstream ost;
-  // Add message
-  if (!message.empty()) {
-    ost << message;
-    if (message[message.size() - 1] != '\n') {
-      ost << '\n';
+  // Generate a wrapper source file on demand
+  if (success && (this->MultiConfig == cmQtAutoGen::WRAP)) {
+    // Wrapper file name
+    std::string const& wrapperFileAbs = rccJob.RccFile;
+    std::string const wrapperFileRel = cmSystemTools::RelativePath(
+      this->AutogenBuildDir.c_str(), wrapperFileAbs.c_str());
+    // Wrapper file content
+    std::string content = "// This is an autogenerated configuration "
+                          "wrapper file. Changes will be overwritten.\n"
+                          "#include \"";
+    content += cmSystemTools::GetFilenameName(rccFileRel);
+    content += "\"\n";
+    // Write content to file
+    if (this->FileDiffers(wrapperFileAbs, content)) {
+      // Write new wrapper file
+      if (this->Verbose) {
+        this->LogBold("Generating RCC wrapper " + wrapperFileRel);
+      }
+      if (!this->FileWrite(cmQtAutoGen::RCC, wrapperFileAbs, content)) {
+        this->LogFileError(cmQtAutoGen::RCC, wrapperFileAbs,
+                           "rcc wrapper file writing failed");
+        success = false;
+      }
+    } else if (rccGenerated) {
+      // Just touch the wrapper file
+      if (this->Verbose) {
+        this->LogInfo(cmQtAutoGen::RCC,
+                      "Touching RCC wrapper " + wrapperFileRel);
+      }
+      cmSystemTools::Touch(wrapperFileAbs, false);
     }
   }
-  // Append collision list
-  for (Iter it = collisions.begin(); it != collisions.end(); ++it) {
-    ost << it->first << " : " << it->second << '\n';
-  }
-  this->LogError(ost.str());
+
+  return success;
 }
 
-void cmQtAutoGenerators::LogBold(const std::string& message) const
+void cmQtAutoGenerators::LogBold(std::string const& message) const
 {
   cmSystemTools::MakefileColorEcho(cmsysTerminal_Color_ForegroundBlue |
                                      cmsysTerminal_Color_ForegroundBold,
                                    message.c_str(), true, this->ColorOutput);
 }
 
-void cmQtAutoGenerators::LogInfo(const std::string& message) const
+void cmQtAutoGenerators::LogInfo(cmQtAutoGen::Generator genType,
+                                 std::string const& message) const
 {
-  std::string msg(message);
-  if (!msg.empty()) {
-    if (msg[msg.size() - 1] != '\n') {
-      msg.push_back('\n');
-    }
-    cmSystemTools::Stdout(msg.c_str(), msg.size());
+  std::string msg = cmQtAutoGen::GeneratorName(genType);
+  msg += ": ";
+  msg += message;
+  if (msg.back() != '\n') {
+    msg.push_back('\n');
   }
+  cmSystemTools::Stdout(msg.c_str(), msg.size());
 }
 
-void cmQtAutoGenerators::LogWarning(const std::string& message) const
+void cmQtAutoGenerators::LogWarning(cmQtAutoGen::Generator genType,
+                                    std::string const& message) const
 {
-  std::string msg(message);
-  if (!msg.empty()) {
-    if (msg[msg.size() - 1] != '\n') {
-      msg.push_back('\n');
-    }
-    // Append empty line
+  std::string msg = cmQtAutoGen::GeneratorName(genType);
+  msg += " warning:";
+  if (message.find('\n') == std::string::npos) {
+    // Single line message
+    msg.push_back(' ');
+  } else {
+    // Multi line message
+    msg.push_back('\n');
+  }
+  // Message
+  msg += message;
+  if (msg.back() != '\n') {
     msg.push_back('\n');
-    cmSystemTools::Stdout(msg.c_str(), msg.size());
   }
+  msg.push_back('\n');
+  cmSystemTools::Stdout(msg.c_str(), msg.size());
 }
 
-void cmQtAutoGenerators::LogError(const std::string& message) const
+void cmQtAutoGenerators::LogFileWarning(cmQtAutoGen::Generator genType,
+                                        std::string const& filename,
+                                        std::string const& message) const
 {
-  std::string msg(message);
-  if (!msg.empty()) {
-    if (msg[msg.size() - 1] != '\n') {
-      msg.push_back('\n');
-    }
-    // Append empty line
-    msg.push_back('\n');
-    cmSystemTools::Stderr(msg.c_str(), msg.size());
-  }
+  std::string msg = "  ";
+  msg += cmQtAutoGen::Quoted(filename);
+  msg.push_back('\n');
+  // Message
+  msg += message;
+  this->LogWarning(genType, msg);
 }
 
-/**
- * @brief Collects name collisions as output/input pairs
- * @return True if there were collisions
- */
-bool cmQtAutoGenerators::NameCollisionTest(
-  const std::map<std::string, std::string>& genFiles,
-  std::multimap<std::string, std::string>& collisions) const
+void cmQtAutoGenerators::LogError(cmQtAutoGen::Generator genType,
+                                  std::string const& message) const
 {
-  typedef std::map<std::string, std::string>::const_iterator Iter;
-  typedef std::map<std::string, std::string>::value_type VType;
-  for (Iter ait = genFiles.begin(); ait != genFiles.end(); ++ait) {
-    bool first_match(true);
-    for (Iter bit = (++Iter(ait)); bit != genFiles.end(); ++bit) {
-      if (ait->second == bit->second) {
-        if (first_match) {
-          if (collisions.find(ait->second) != collisions.end()) {
-            // We already know of this collision from before
-            break;
-          }
-          collisions.insert(VType(ait->second, ait->first));
-          first_match = false;
-        }
-        collisions.insert(VType(bit->second, bit->first));
-      }
-    }
+  std::string msg;
+  msg.push_back('\n');
+  msg += HeadLine(cmQtAutoGen::GeneratorName(genType) + " error");
+  // Message
+  msg += message;
+  if (msg.back() != '\n') {
+    msg.push_back('\n');
   }
+  msg.push_back('\n');
+  cmSystemTools::Stderr(msg.c_str(), msg.size());
+}
 
-  return !collisions.empty();
+void cmQtAutoGenerators::LogFileError(cmQtAutoGen::Generator genType,
+                                      std::string const& filename,
+                                      std::string const& message) const
+{
+  std::string emsg = "  ";
+  emsg += cmQtAutoGen::Quoted(filename);
+  emsg += '\n';
+  // Message
+  emsg += message;
+  this->LogError(genType, emsg);
 }
 
-/**
- * @brief Generates a file path based on the checksum of the source file path
- * @return The path
- */
-std::string cmQtAutoGenerators::ChecksumedPath(
-  const std::string& sourceFile, const std::string& basePrefix,
-  const std::string& baseSuffix) const
+void cmQtAutoGenerators::LogCommandError(
+  cmQtAutoGen::Generator genType, std::string const& message,
+  std::vector<std::string> const& command, std::string const& output) const
 {
-  std::string res = FPathChecksum.getPart(sourceFile);
-  res += "/";
-  res += basePrefix;
-  res += cmsys::SystemTools::GetFilenameWithoutLastExtension(sourceFile);
-  res += baseSuffix;
-  return res;
+  std::string msg;
+  msg.push_back('\n');
+  msg += HeadLine(cmQtAutoGen::GeneratorName(genType) + " subprocess error");
+  msg += message;
+  if (msg.back() != '\n') {
+    msg.push_back('\n');
+  }
+  msg.push_back('\n');
+  msg += HeadLine("Command");
+  msg += QuotedCommand(command);
+  if (msg.back() != '\n') {
+    msg.push_back('\n');
+  }
+  msg.push_back('\n');
+  msg += HeadLine("Output");
+  msg += output;
+  if (msg.back() != '\n') {
+    msg.push_back('\n');
+  }
+  msg.push_back('\n');
+  cmSystemTools::Stderr(msg.c_str(), msg.size());
 }
 
 /**
  * @brief Generates the parent directory of the given file on demand
  * @return True on success
  */
-bool cmQtAutoGenerators::MakeParentDirectory(const char* logPrefix,
-                                             const std::string& filename) const
+bool cmQtAutoGenerators::MakeParentDirectory(cmQtAutoGen::Generator genType,
+                                             std::string const& filename) const
 {
   bool success = true;
-  const std::string dirName = cmSystemTools::GetFilenamePath(filename);
+  std::string const dirName = cmSystemTools::GetFilenamePath(filename);
   if (!dirName.empty()) {
-    success = cmsys::SystemTools::MakeDirectory(dirName);
-    if (!success) {
-      std::string error = logPrefix;
-      error += ": Error: Parent directory creation failed for ";
-      error += Quoted(filename);
-      this->LogError(error);
+    if (!cmSystemTools::MakeDirectory(dirName)) {
+      this->LogFileError(genType, filename,
+                         "Could not create parent directory");
+      success = false;
     }
   }
   return success;
 }
 
-bool cmQtAutoGenerators::FileDiffers(const std::string& filename,
-                                     const std::string& content)
+bool cmQtAutoGenerators::FileDiffers(std::string const& filename,
+                                     std::string const& content)
 {
   bool differs = true;
   {
     std::string oldContents;
-    if (ReadAll(oldContents, filename)) {
+    if (ReadFile(oldContents, filename)) {
       differs = (oldContents != content);
     }
   }
   return differs;
 }
 
-bool cmQtAutoGenerators::FileWrite(const char* logPrefix,
-                                   const std::string& filename,
-                                   const std::string& content)
+bool cmQtAutoGenerators::FileWrite(cmQtAutoGen::Generator genType,
+                                   std::string const& filename,
+                                   std::string const& content)
 {
   std::string error;
   // Make sure the parent directory exists
-  if (this->MakeParentDirectory(logPrefix, filename)) {
+  if (this->MakeParentDirectory(genType, filename)) {
     cmsys::ofstream outfile;
-    outfile.open(filename.c_str(), std::ios::trunc);
+    outfile.open(filename.c_str(),
+                 (std::ios::out | std::ios::binary | std::ios::trunc));
     if (outfile) {
       outfile << content;
       // Check for write errors
       if (!outfile.good()) {
-        error = logPrefix;
-        error += ": Error writing ";
-        error += Quoted(filename);
+        error = "File writing failed";
       }
     } else {
-      error = logPrefix;
-      error = ": Error opening ";
-      error += Quoted(filename);
+      error = "Opening file for writing failed";
     }
   }
   if (!error.empty()) {
-    this->LogError(error);
+    this->LogFileError(genType, filename, error);
     return false;
   }
   return true;
@@ -1972,18 +2295,19 @@ bool cmQtAutoGenerators::FileWrite(const char* logPrefix,
  * @brief Runs a command and returns true on success
  * @return True on success
  */
-bool cmQtAutoGenerators::RunCommand(const std::vector<std::string>& command,
-                                    std::string& output, bool verbose) const
+bool cmQtAutoGenerators::RunCommand(std::vector<std::string> const& command,
+                                    std::string& output) const
 {
   // Log command
   if (this->Verbose) {
-    this->LogInfo(QuotedCommand(command));
+    std::string qcmd = QuotedCommand(command);
+    qcmd.push_back('\n');
+    cmSystemTools::Stdout(qcmd.c_str(), qcmd.size());
   }
   // Execute command
   int retVal = 0;
   bool res = cmSystemTools::RunSingleCommand(
-    command, &output, &output, &retVal, CM_NULLPTR,
-    verbose ? cmSystemTools::OUTPUT_MERGE : cmSystemTools::OUTPUT_NONE);
+    command, &output, &output, &retVal, nullptr, cmSystemTools::OUTPUT_NONE);
   return (res && (retVal == 0));
 }
 
@@ -1993,71 +2317,16 @@ bool cmQtAutoGenerators::RunCommand(const std::vector<std::string>& command,
  * @return True on success
  */
 bool cmQtAutoGenerators::FindHeader(std::string& header,
-                                    const std::string& testBasePath) const
+                                    std::string const& testBasePath) const
 {
-  for (std::vector<std::string>::const_iterator ext =
-         this->HeaderExtensions.begin();
-       ext != this->HeaderExtensions.end(); ++ext) {
+  for (std::string const& ext : this->HeaderExtensions) {
     std::string testFilePath(testBasePath);
-    testFilePath += '.';
-    testFilePath += (*ext);
-    if (cmsys::SystemTools::FileExists(testFilePath.c_str())) {
+    testFilePath.push_back('.');
+    testFilePath += ext;
+    if (cmSystemTools::FileExists(testFilePath.c_str())) {
       header = testFilePath;
       return true;
     }
   }
   return false;
 }
-
-std::string cmQtAutoGenerators::MocFindHeader(
-  const std::string& sourcePath, const std::string& includeBase) const
-{
-  std::string header;
-  // Search in vicinity of the source
-  if (!this->FindHeader(header, sourcePath + includeBase)) {
-    // Search in include directories
-    for (std::vector<std::string>::const_iterator iit =
-           this->MocIncludePaths.begin();
-         iit != this->MocIncludePaths.end(); ++iit) {
-      const std::string fullPath = ((*iit) + '/' + includeBase);
-      if (FindHeader(header, fullPath)) {
-        break;
-      }
-    }
-  }
-  // Sanitize
-  if (!header.empty()) {
-    header = cmsys::SystemTools::GetRealPath(header);
-  }
-  return header;
-}
-
-bool cmQtAutoGenerators::MocFindIncludedFile(
-  std::string& absFile, const std::string& sourcePath,
-  const std::string& includeString) const
-{
-  bool success = false;
-  // Search in vicinity of the source
-  {
-    std::string testPath = sourcePath;
-    testPath += includeString;
-    if (cmsys::SystemTools::FileExists(testPath.c_str())) {
-      absFile = cmsys::SystemTools::GetRealPath(testPath);
-      success = true;
-    }
-  }
-  // Search in include directories
-  if (!success) {
-    for (std::vector<std::string>::const_iterator iit =
-           this->MocIncludePaths.begin();
-         iit != this->MocIncludePaths.end(); ++iit) {
-      const std::string fullPath = ((*iit) + '/' + includeString);
-      if (cmsys::SystemTools::FileExists(fullPath.c_str())) {
-        absFile = cmsys::SystemTools::GetRealPath(fullPath);
-        success = true;
-        break;
-      }
-    }
-  }
-  return success;
-}
diff --git a/Source/cmQtAutoGenerators.h b/Source/cmQtAutoGenerators.h
index 337aa17fd..a7bb53840 100644
--- a/Source/cmQtAutoGenerators.h
+++ b/Source/cmQtAutoGenerators.h
@@ -6,160 +6,194 @@
 #include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmFilePathChecksum.h"
+#include "cmQtAutoGen.h"
 #include "cmsys/RegularExpression.hxx"
 
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <set>
 #include <string>
-#include <utility>
 #include <vector>
 
 class cmMakefile;
 
 class cmQtAutoGenerators
 {
+  CM_DISABLE_COPY(cmQtAutoGenerators)
 public:
   cmQtAutoGenerators();
-  bool Run(const std::string& targetDirectory, const std::string& config);
+  bool Run(std::string const& targetDirectory, std::string const& config);
 
 private:
   // -- Types
 
-  /// @brief Used to extract additional dependencies from content text
-  struct MocDependFilter
+  /// @brief Search key plus regular expression pair
+  struct KeyRegExp
   {
-    std::string key;
-    cmsys::RegularExpression regExp;
+    KeyRegExp() = default;
+
+    KeyRegExp(const char* key, const char* regExp)
+      : Key(key)
+      , RegExp(regExp)
+    {
+    }
+
+    KeyRegExp(std::string const& key, std::string const& regExp)
+      : Key(key)
+      , RegExp(regExp)
+    {
+    }
+
+    std::string Key;
+    cmsys::RegularExpression RegExp;
   };
-  typedef std::pair<std::string, cmsys::RegularExpression> MocMacroFilter;
 
-  // -- Configuration
-  bool MocDependFilterPush(const std::string& key, const std::string& regExp);
-  bool ReadAutogenInfoFile(cmMakefile* makefile,
-                           const std::string& targetDirectory,
-                           const std::string& config);
+  /// @brief Source file job
+  struct SourceJob
+  {
+    bool Moc = false;
+    bool Uic = false;
+  };
 
-  bool MocEnabled() const { return !this->MocExecutable.empty(); }
-  bool UicEnabled() const { return !this->UicExecutable.empty(); }
-  bool RccEnabled() const { return !this->RccExecutable.empty(); }
+  /// @brief MOC job
+  struct MocJobAuto
+  {
+    std::string SourceFile;
+    std::string BuildFileRel;
+    std::set<std::string> Depends;
+  };
+
+  /// @brief MOC job
+  struct MocJobIncluded : MocJobAuto
+  {
+    bool DependsValid = false;
+    std::string Includer;
+    std::string IncludeString;
+  };
+
+  /// @brief UIC job
+  struct UicJob
+  {
+    std::string SourceFile;
+    std::string BuildFileRel;
+    std::string Includer;
+    std::string IncludeString;
+  };
+
+  /// @brief RCC job
+  struct RccJob
+  {
+    std::string QrcFile;
+    std::string RccFile;
+    std::vector<std::string> Options;
+    std::vector<std::string> Inputs;
+  };
+
+  // -- Initialization
+  bool InitInfoFile(cmMakefile* makefile, std::string const& targetDirectory,
+                    std::string const& config);
 
   // -- Settings file
   void SettingsFileRead(cmMakefile* makefile);
   bool SettingsFileWrite();
-
-  bool AnySettingsChanged() const
+  bool SettingsChanged() const
   {
     return (this->MocSettingsChanged || this->RccSettingsChanged ||
             this->UicSettingsChanged);
   }
 
-  // -- Init and run
-  void Init(cmMakefile* makefile);
-  bool RunAutogen();
-
-  // -- Content analysis
-  bool MocRequired(const std::string& contentText,
-                   std::string* macroName = CM_NULLPTR);
-  void MocFindDepends(
-    const std::string& absFilename, const std::string& contentText,
-    std::map<std::string, std::set<std::string> >& mocDepends);
-
-  bool MocSkip(const std::string& absFilename) const;
-  bool UicSkip(const std::string& absFilename) const;
-
-  bool ParseSourceFile(
-    const std::string& absFilename,
-    std::map<std::string, std::string>& mocsIncluded,
-    std::map<std::string, std::set<std::string> >& mocDepends,
-    std::map<std::string, std::vector<std::string> >& includedUis,
-    bool relaxed);
-
-  void SearchHeadersForSourceFile(const std::string& absFilename,
-                                  std::set<std::string>& mocHeaderFiles,
-                                  std::set<std::string>& uicHeaderFiles) const;
-
-  bool ParseHeaders(
-    const std::set<std::string>& mocHeaderFiles,
-    const std::set<std::string>& uicHeaderFiles,
-    const std::map<std::string, std::string>& mocsIncluded,
-    std::map<std::string, std::string>& mocsNotIncluded,
-    std::map<std::string, std::set<std::string> >& mocDepends,
-    std::map<std::string, std::vector<std::string> >& includedUis);
-
-  void UicParseContent(
-    const std::string& fileName, const std::string& contentText,
-    std::map<std::string, std::vector<std::string> >& includedUis);
-
-  bool MocParseSourceContent(
-    const std::string& absFilename, const std::string& contentText,
-    std::map<std::string, std::string>& mocsIncluded,
-    std::map<std::string, std::set<std::string> >& mocDepends, bool relaxed);
-
-  void MocParseHeaderContent(
-    const std::string& absFilename, const std::string& contentText,
-    std::map<std::string, std::string>& mocsNotIncluded,
-    std::map<std::string, std::set<std::string> >& mocDepends);
-
-  // -- Moc file generation
-  bool MocGenerateAll(
-    const std::map<std::string, std::string>& mocsIncluded,
-    const std::map<std::string, std::string>& mocsNotIncluded,
-    const std::map<std::string, std::set<std::string> >& mocDepends);
-  bool MocGenerateFile(
-    const std::string& sourceFile, const std::string& mocFileName,
-    const std::map<std::string, std::set<std::string> >& mocDepends,
-    bool included);
-
-  // -- Uic file generation
-  bool UicFindIncludedFile(std::string& absFile, const std::string& sourceFile,
-                           const std::string& searchPath,
-                           const std::string& searchFile);
-  bool UicGenerateAll(
-    const std::map<std::string, std::vector<std::string> >& includedUis);
-  bool UicGenerateFile(const std::string& realName,
-                       const std::string& uiInputFile,
-                       const std::string& uiOutputFile);
-
-  // -- Rcc file generation
+  // -- Central processing
+  bool Process();
+
+  // -- Source parsing
+  bool ParseSourceFile(std::string const& absFilename, const SourceJob& job);
+  bool ParseHeaderFile(std::string const& absFilename, const SourceJob& job);
+  bool ParsePostprocess();
+
+  // -- Moc
+  bool MocEnabled() const { return !this->MocExecutable.empty(); }
+  bool MocSkip(std::string const& absFilename) const;
+  bool MocRequired(std::string const& contentText,
+                   std::string* macroName = nullptr);
+  // Moc strings
+  std::string MocStringMacros() const;
+  std::string MocStringHeaders(std::string const& fileBase) const;
+  std::string MocFindIncludedHeader(std::string const& sourcePath,
+                                    std::string const& includeBase) const;
+  bool MocFindIncludedFile(std::string& absFile, std::string const& sourceFile,
+                           std::string const& includeString) const;
+  // Moc depends
+  bool MocDependFilterPush(std::string const& key, std::string const& regExp);
+  void MocFindDepends(std::string const& absFilename,
+                      std::string const& contentText,
+                      std::set<std::string>& depends);
+  // Moc
+  bool MocParseSourceContent(std::string const& absFilename,
+                             std::string const& contentText);
+  void MocParseHeaderContent(std::string const& absFilename,
+                             std::string const& contentText);
+
+  bool MocGenerateAll();
+  bool MocGenerateFile(const MocJobAuto& mocJob, bool* generated = nullptr);
+
+  // -- Uic
+  bool UicEnabled() const { return !this->UicExecutable.empty(); }
+  bool UicSkip(std::string const& absFilename) const;
+  bool UicParseContent(std::string const& fileName,
+                       std::string const& contentText);
+  bool UicFindIncludedFile(std::string& absFile, std::string const& sourceFile,
+                           std::string const& includeString);
+  bool UicGenerateAll();
+  bool UicGenerateFile(const UicJob& uicJob);
+
+  // -- Rcc
+  bool RccEnabled() const { return !this->RccExecutable.empty(); }
   bool RccGenerateAll();
-  bool RccGenerateFile(const std::string& qrcInputFile,
-                       const std::string& qrcOutputFile, bool unique_n);
-
-  // -- Logging
-  void LogErrorNameCollision(
-    const std::string& message,
-    const std::multimap<std::string, std::string>& collisions) const;
-  void LogBold(const std::string& message) const;
-  void LogInfo(const std::string& message) const;
-  void LogWarning(const std::string& message) const;
-  void LogError(const std::string& message) const;
-  void LogCommand(const std::vector<std::string>& command) const;
+  bool RccGenerateFile(const RccJob& rccJob);
+
+  // -- Log info
+  void LogBold(std::string const& message) const;
+  void LogInfo(cmQtAutoGen::Generator genType,
+               std::string const& message) const;
+  // -- Log warning
+  void LogWarning(cmQtAutoGen::Generator genType,
+                  std::string const& message) const;
+  void LogFileWarning(cmQtAutoGen::Generator genType,
+                      std::string const& filename,
+                      std::string const& message) const;
+  // -- Log error
+  void LogError(cmQtAutoGen::Generator genType,
+                std::string const& message) const;
+  void LogFileError(cmQtAutoGen::Generator genType,
+                    std::string const& filename,
+                    std::string const& message) const;
+  void LogCommandError(cmQtAutoGen::Generator genType,
+                       std::string const& message,
+                       std::vector<std::string> const& command,
+                       std::string const& output) const;
 
   // -- Utility
-  bool NameCollisionTest(
-    const std::map<std::string, std::string>& genFiles,
-    std::multimap<std::string, std::string>& collisions) const;
-  std::string ChecksumedPath(const std::string& sourceFile,
-                             const std::string& basePrefix,
-                             const std::string& baseSuffix) const;
-  bool MakeParentDirectory(const char* logPrefix,
-                           const std::string& filename) const;
-  bool FileDiffers(const std::string& filename, const std::string& content);
-  bool FileWrite(const char* logPrefix, const std::string& filename,
-                 const std::string& content);
-
-  bool RunCommand(const std::vector<std::string>& command, std::string& output,
-                  bool verbose = true) const;
-
-  bool FindHeader(std::string& header, const std::string& testBasePath) const;
-
-  std::string MocFindHeader(const std::string& sourcePath,
-                            const std::string& includeBase) const;
-  bool MocFindIncludedFile(std::string& absFile, const std::string& sourceFile,
-                           const std::string& includeString) const;
+  bool MakeParentDirectory(cmQtAutoGen::Generator genType,
+                           std::string const& filename) const;
+  bool FileDiffers(std::string const& filename, std::string const& content);
+  bool FileWrite(cmQtAutoGen::Generator genType, std::string const& filename,
+                 std::string const& content);
+  bool FindHeader(std::string& header, std::string const& testBasePath) const;
+  bool RunCommand(std::vector<std::string> const& command,
+                  std::string& output) const;
 
   // -- Meta
+  std::string InfoFile;
   std::string ConfigSuffix;
+  cmQtAutoGen::MultiConfig MultiConfig;
+  // -- Settings
+  bool IncludeProjectDirsBefore;
+  bool Verbose;
+  bool ColorOutput;
+  std::string SettingsFile;
+  std::string SettingsStringMoc;
+  std::string SettingsStringUic;
+  std::string SettingsStringRcc;
   // -- Directories
   std::string ProjectSourceDir;
   std::string ProjectBinaryDir;
@@ -169,27 +203,19 @@ private:
   std::string AutogenIncludeDir;
   // -- Qt environment
   std::string QtMajorVersion;
+  std::string QtMinorVersion;
   std::string MocExecutable;
   std::string UicExecutable;
   std::string RccExecutable;
   // -- File lists
-  std::vector<std::string> Sources;
-  std::vector<std::string> Headers;
+  std::map<std::string, SourceJob> HeaderJobs;
+  std::map<std::string, SourceJob> SourceJobs;
   std::vector<std::string> HeaderExtensions;
-  cmFilePathChecksum FPathChecksum;
-  // -- Settings
-  bool IncludeProjectDirsBefore;
-  bool Verbose;
-  bool ColorOutput;
-  std::string SettingsFile;
-  std::string SettingsStringMoc;
-  std::string SettingsStringUic;
-  std::string SettingsStringRcc;
+  cmFilePathChecksum FilePathChecksum;
   // -- Moc
   bool MocSettingsChanged;
   bool MocPredefsChanged;
   bool MocRelaxedMode;
-  bool MocRunFailed;
   std::string MocCompFileRel;
   std::string MocCompFileAbs;
   std::string MocPredefsFileRel;
@@ -199,24 +225,24 @@ private:
   std::vector<std::string> MocIncludes;
   std::vector<std::string> MocDefinitions;
   std::vector<std::string> MocOptions;
+  std::vector<std::string> MocAllOptions;
   std::vector<std::string> MocPredefsCmd;
-  std::vector<MocDependFilter> MocDependFilters;
-  MocMacroFilter MocMacroFilters[2];
+  std::vector<KeyRegExp> MocDependFilters;
+  std::vector<KeyRegExp> MocMacroFilters;
   cmsys::RegularExpression MocRegExpInclude;
+  std::vector<std::unique_ptr<MocJobIncluded>> MocJobsIncluded;
+  std::vector<std::unique_ptr<MocJobAuto>> MocJobsAuto;
   // -- Uic
   bool UicSettingsChanged;
-  bool UicRunFailed;
   std::vector<std::string> UicSkipList;
   std::vector<std::string> UicTargetOptions;
-  std::map<std::string, std::string> UicOptions;
+  std::map<std::string, std::vector<std::string>> UicOptions;
   std::vector<std::string> UicSearchPaths;
   cmsys::RegularExpression UicRegExpInclude;
+  std::vector<std::unique_ptr<UicJob>> UicJobs;
   // -- Rcc
   bool RccSettingsChanged;
-  bool RccRunFailed;
-  std::vector<std::string> RccSources;
-  std::map<std::string, std::string> RccOptions;
-  std::map<std::string, std::vector<std::string> > RccInputs;
+  std::vector<RccJob> RccJobs;
 };
 
 #endif
diff --git a/Source/cmRST.cxx b/Source/cmRST.cxx
index 5364f76f4..112be4d37 100644
--- a/Source/cmRST.cxx
+++ b/Source/cmRST.cxx
@@ -86,7 +86,7 @@ void cmRST::ProcessModule(std::istream& is)
         if (line[0] != '#') {
           this->ProcessLine(line.substr(0, pos));
         }
-        rst = "";
+        rst.clear();
         this->Reset();
         this->OutputLinePending = true;
       }
@@ -101,7 +101,7 @@ void cmRST::ProcessModule(std::istream& is)
           this->ProcessLine(line.substr(2));
           continue;
         }
-        rst = "";
+        rst.clear();
         this->Reset();
         this->OutputLinePending = true;
       }
@@ -292,9 +292,7 @@ std::string cmRST::ReplaceSubstitutions(std::string const& line)
 
 void cmRST::OutputMarkupLines(bool inlineMarkup)
 {
-  for (std::vector<std::string>::iterator i = this->MarkupLines.begin();
-       i != this->MarkupLines.end(); ++i) {
-    std::string line = *i;
+  for (auto line : this->MarkupLines) {
     if (!line.empty()) {
       line = " " + line;
     }
@@ -347,15 +345,13 @@ void cmRST::ProcessDirectiveReplace()
   // Record markup lines as replacement text.
   std::string& replacement = this->Replace[this->ReplaceName];
   replacement += cmJoin(this->MarkupLines, " ");
-  this->ReplaceName = "";
+  this->ReplaceName.clear();
 }
 
 void cmRST::ProcessDirectiveTocTree()
 {
   // Process documents referenced by toctree directive.
-  for (std::vector<std::string>::iterator i = this->MarkupLines.begin();
-       i != this->MarkupLines.end(); ++i) {
-    std::string const& line = *i;
+  for (std::string const& line : this->MarkupLines) {
     if (!line.empty() && line[0] != ':') {
       if (this->TocTreeLink.find(line)) {
         std::string const& link = this->TocTreeLink.match(1);
diff --git a/Source/cmRemoveCommand.cxx b/Source/cmRemoveCommand.cxx
index 1db84414a..bb14e687d 100644
--- a/Source/cmRemoveCommand.cxx
+++ b/Source/cmRemoveCommand.cxx
@@ -37,10 +37,10 @@ bool cmRemoveCommand::InitialPass(std::vector<std::string> const& args,
 
   // now create the new value
   std::string value;
-  for (unsigned int j = 0; j < varArgsExpanded.size(); ++j) {
+  for (std::string const& varArgExpanded : varArgsExpanded) {
     int found = 0;
-    for (unsigned int k = 0; k < argsExpanded.size(); ++k) {
-      if (varArgsExpanded[j] == argsExpanded[k]) {
+    for (std::string const& argExpanded : argsExpanded) {
+      if (varArgExpanded == argExpanded) {
         found = 1;
         break;
       }
@@ -49,7 +49,7 @@ bool cmRemoveCommand::InitialPass(std::vector<std::string> const& args,
       if (!value.empty()) {
         value += ";";
       }
-      value += varArgsExpanded[j];
+      value += varArgExpanded;
     }
   }
 
diff --git a/Source/cmRemoveCommand.h b/Source/cmRemoveCommand.h
index f2e89f6e1..7b118497b 100644
--- a/Source/cmRemoveCommand.h
+++ b/Source/cmRemoveCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmRemoveCommand_h
 #define cmRemoveCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmRemoveCommand; }
+  cmCommand* Clone() override { return new cmRemoveCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmRemoveDefinitionsCommand.cxx b/Source/cmRemoveDefinitionsCommand.cxx
index f5fe2dfb7..8311b4b2f 100644
--- a/Source/cmRemoveDefinitionsCommand.cxx
+++ b/Source/cmRemoveDefinitionsCommand.cxx
@@ -15,9 +15,8 @@ bool cmRemoveDefinitionsCommand::InitialPass(
     return true;
   }
 
-  for (std::vector<std::string>::const_iterator i = args.begin();
-       i != args.end(); ++i) {
-    this->Makefile->RemoveDefineFlag(i->c_str());
+  for (std::string const& i : args) {
+    this->Makefile->RemoveDefineFlag(i.c_str());
   }
   return true;
 }
diff --git a/Source/cmRemoveDefinitionsCommand.h b/Source/cmRemoveDefinitionsCommand.h
index 9a9a5d535..a5cb2044d 100644
--- a/Source/cmRemoveDefinitionsCommand.h
+++ b/Source/cmRemoveDefinitionsCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmRemoveDefinitionsCommand_h
 #define cmRemoveDefinitionsCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -25,14 +25,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmRemoveDefinitionsCommand; }
+  cmCommand* Clone() override { return new cmRemoveDefinitionsCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmReturnCommand.h b/Source/cmReturnCommand.h
index 87900e7e9..ef3961459 100644
--- a/Source/cmReturnCommand.h
+++ b/Source/cmReturnCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmReturnCommand_h
 #define cmReturnCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmReturnCommand; }
+  cmCommand* Clone() override { return new cmReturnCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmScriptGenerator.cxx b/Source/cmScriptGenerator.cxx
index 753a1ba6f..2cae71436 100644
--- a/Source/cmScriptGenerator.cxx
+++ b/Source/cmScriptGenerator.cxx
@@ -10,7 +10,7 @@ cmScriptGenerator::cmScriptGenerator(
   : RuntimeConfigVariable(config_var)
   , Configurations(configurations)
   , ConfigurationName("")
-  , ConfigurationTypes(CM_NULLPTR)
+  , ConfigurationTypes(nullptr)
   , ActionsPerConfig(false)
 {
 }
@@ -26,8 +26,8 @@ void cmScriptGenerator::Generate(
   this->ConfigurationName = config;
   this->ConfigurationTypes = &configurationTypes;
   this->GenerateScript(os);
-  this->ConfigurationName = "";
-  this->ConfigurationTypes = CM_NULLPTR;
+  this->ConfigurationName.clear();
+  this->ConfigurationTypes = nullptr;
 }
 
 static void cmScriptGeneratorEncodeConfig(const std::string& config,
@@ -69,11 +69,10 @@ std::string cmScriptGenerator::CreateConfigTest(
   result += this->RuntimeConfigVariable;
   result += "}\" MATCHES \"^(";
   const char* sep = "";
-  for (std::vector<std::string>::const_iterator ci = configs.begin();
-       ci != configs.end(); ++ci) {
+  for (std::string const& config : configs) {
     result += sep;
     sep = "|";
-    cmScriptGeneratorEncodeConfig(*ci, result);
+    cmScriptGeneratorEncodeConfig(config, result);
   }
   result += ")$\"";
   return result;
@@ -123,10 +122,8 @@ bool cmScriptGenerator::GeneratesForConfig(const std::string& config)
   // This is a configuration-specific rule.  Check if the config
   // matches this rule.
   std::string config_upper = cmSystemTools::UpperCase(config);
-  for (std::vector<std::string>::const_iterator i =
-         this->Configurations.begin();
-       i != this->Configurations.end(); ++i) {
-    if (cmSystemTools::UpperCase(*i) == config_upper) {
+  for (std::string const& cfg : this->Configurations) {
+    if (cmSystemTools::UpperCase(cfg) == config_upper) {
       return true;
     }
   }
@@ -163,15 +160,12 @@ void cmScriptGenerator::GenerateScriptActionsPerConfig(std::ostream& os,
     // in a block for each configuration that is built.  We restrict
     // the list of configurations to those to which this rule applies.
     bool first = true;
-    for (std::vector<std::string>::const_iterator i =
-           this->ConfigurationTypes->begin();
-         i != this->ConfigurationTypes->end(); ++i) {
-      const char* config = i->c_str();
-      if (this->GeneratesForConfig(config)) {
+    for (std::string const& cfgType : *this->ConfigurationTypes) {
+      if (this->GeneratesForConfig(cfgType)) {
         // Generate a per-configuration block.
-        std::string config_test = this->CreateConfigTest(config);
+        std::string config_test = this->CreateConfigTest(cfgType);
         os << indent << (first ? "if(" : "elseif(") << config_test << ")\n";
-        this->GenerateScriptForConfig(os, config, indent.Next());
+        this->GenerateScriptForConfig(os, cfgType, indent.Next());
         first = false;
       }
     }
diff --git a/Source/cmScriptGenerator.h b/Source/cmScriptGenerator.h
index d0879c687..c8fed1950 100644
--- a/Source/cmScriptGenerator.h
+++ b/Source/cmScriptGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmScriptGenerator_h
 #define cmScriptGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <ostream>
 #include <string>
diff --git a/Source/cmSearchPath.cxx b/Source/cmSearchPath.cxx
index 0df6e0c06..a40c98706 100644
--- a/Source/cmSearchPath.cxx
+++ b/Source/cmSearchPath.cxx
@@ -27,10 +27,9 @@ void cmSearchPath::ExtractWithout(const std::set<std::string>& ignore,
   if (clear) {
     outPaths.clear();
   }
-  for (std::vector<std::string>::const_iterator p = this->Paths.begin();
-       p != this->Paths.end(); ++p) {
-    if (ignore.count(*p) == 0) {
-      outPaths.push_back(*p);
+  for (std::string const& path : this->Paths) {
+    if (ignore.count(path) == 0) {
+      outPaths.push_back(path);
     }
   }
 }
@@ -42,7 +41,7 @@ void cmSearchPath::AddPath(const std::string& path)
 
 void cmSearchPath::AddUserPath(const std::string& path)
 {
-  assert(this->FC != CM_NULLPTR);
+  assert(this->FC != nullptr);
 
   std::vector<std::string> outPaths;
 
@@ -69,24 +68,22 @@ void cmSearchPath::AddUserPath(const std::string& path)
   }
 
   // Process them all from the current directory
-  for (std::vector<std::string>::const_iterator p = outPaths.begin();
-       p != outPaths.end(); ++p) {
-    this->AddPathInternal(*p, this->FC->Makefile->GetCurrentSourceDirectory());
+  for (std::string const& p : outPaths) {
+    this->AddPathInternal(p, this->FC->Makefile->GetCurrentSourceDirectory());
   }
 }
 
 void cmSearchPath::AddCMakePath(const std::string& variable)
 {
-  assert(this->FC != CM_NULLPTR);
+  assert(this->FC != nullptr);
 
   // Get a path from a CMake variable.
   if (const char* value = this->FC->Makefile->GetDefinition(variable)) {
     std::vector<std::string> expanded;
     cmSystemTools::ExpandListArgument(value, expanded);
 
-    for (std::vector<std::string>::const_iterator p = expanded.begin();
-         p != expanded.end(); ++p) {
-      this->AddPathInternal(*p,
+    for (std::string const& p : expanded) {
+      this->AddPathInternal(p,
                             this->FC->Makefile->GetCurrentSourceDirectory());
     }
   }
@@ -96,15 +93,14 @@ void cmSearchPath::AddEnvPath(const std::string& variable)
 {
   std::vector<std::string> expanded;
   cmSystemTools::GetPath(expanded, variable.c_str());
-  for (std::vector<std::string>::const_iterator p = expanded.begin();
-       p != expanded.end(); ++p) {
-    this->AddPathInternal(*p);
+  for (std::string const& p : expanded) {
+    this->AddPathInternal(p);
   }
 }
 
 void cmSearchPath::AddCMakePrefixPath(const std::string& variable)
 {
-  assert(this->FC != CM_NULLPTR);
+  assert(this->FC != nullptr);
 
   // Get a path from a CMake variable.
   if (const char* value = this->FC->Makefile->GetDefinition(variable)) {
@@ -142,33 +138,31 @@ void cmSearchPath::AddSuffixes(const std::vector<std::string>& suffixes)
   inPaths.swap(this->Paths);
   this->Paths.reserve(inPaths.size() * (suffixes.size() + 1));
 
-  for (std::vector<std::string>::iterator ip = inPaths.begin();
-       ip != inPaths.end(); ++ip) {
-    cmSystemTools::ConvertToUnixSlashes(*ip);
+  for (std::string& inPath : inPaths) {
+    cmSystemTools::ConvertToUnixSlashes(inPath);
 
     // if *i is only / then do not add a //
     // this will get incorrectly considered a network
     // path on windows and cause huge delays.
-    std::string p = *ip;
+    std::string p = inPath;
     if (!p.empty() && *p.rbegin() != '/') {
       p += "/";
     }
 
     // Combine with all the suffixes
-    for (std::vector<std::string>::const_iterator s = suffixes.begin();
-         s != suffixes.end(); ++s) {
-      this->Paths.push_back(p + *s);
+    for (std::string const& suffix : suffixes) {
+      this->Paths.push_back(p + suffix);
     }
 
     // And now the original w/o any suffix
-    this->Paths.push_back(*ip);
+    this->Paths.push_back(inPath);
   }
 }
 
 void cmSearchPath::AddPrefixPaths(const std::vector<std::string>& paths,
                                   const char* base)
 {
-  assert(this->FC != CM_NULLPTR);
+  assert(this->FC != nullptr);
 
   // default for programs
   std::string subdir = "bin";
@@ -178,12 +172,11 @@ void cmSearchPath::AddPrefixPaths(const std::vector<std::string>& paths,
   } else if (this->FC->CMakePathName == "LIBRARY") {
     subdir = "lib";
   } else if (this->FC->CMakePathName == "FRAMEWORK") {
-    subdir = ""; // ? what to do for frameworks ?
+    subdir.clear(); // ? what to do for frameworks ?
   }
 
-  for (std::vector<std::string>::const_iterator p = paths.begin();
-       p != paths.end(); ++p) {
-    std::string dir = *p;
+  for (std::string const& path : paths) {
+    std::string dir = path;
     if (!subdir.empty() && !dir.empty() && *dir.rbegin() != '/') {
       dir += "/";
     }
@@ -201,15 +194,15 @@ void cmSearchPath::AddPrefixPaths(const std::vector<std::string>& paths,
     if (subdir == "bin") {
       this->AddPathInternal(dir + "sbin", base);
     }
-    if (!subdir.empty() && *p != "/") {
-      this->AddPathInternal(*p, base);
+    if (!subdir.empty() && path != "/") {
+      this->AddPathInternal(path, base);
     }
   }
 }
 
 void cmSearchPath::AddPathInternal(const std::string& path, const char* base)
 {
-  assert(this->FC != CM_NULLPTR);
+  assert(this->FC != nullptr);
 
   std::string collapsed = cmSystemTools::CollapseFullPath(path, base);
 
diff --git a/Source/cmSearchPath.h b/Source/cmSearchPath.h
index 932022aa1..fd0c7c52e 100644
--- a/Source/cmSearchPath.h
+++ b/Source/cmSearchPath.h
@@ -3,7 +3,7 @@
 #ifndef cmSearchPath_h
 #define cmSearchPath_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <set>
 #include <string>
@@ -23,7 +23,7 @@ public:
   // cmSearchPath must be initialized from a valid pointer.  The only reason
   // for the default is to allow it to be easily used in stl containers.
   // Attempting to initialize with a NULL value will fail an assertion
-  cmSearchPath(cmFindCommon* findCmd = CM_NULLPTR);
+  cmSearchPath(cmFindCommon* findCmd = nullptr);
   ~cmSearchPath();
 
   const std::vector<std::string>& GetPaths() const { return this->Paths; }
@@ -42,8 +42,8 @@ public:
 
 protected:
   void AddPrefixPaths(const std::vector<std::string>& paths,
-                      const char* base = CM_NULLPTR);
-  void AddPathInternal(const std::string& path, const char* base = CM_NULLPTR);
+                      const char* base = nullptr);
+  void AddPathInternal(const std::string& path, const char* base = nullptr);
 
   cmFindCommon* FC;
   std::vector<std::string> Paths;
diff --git a/Source/cmSeparateArgumentsCommand.cxx b/Source/cmSeparateArgumentsCommand.cxx
index 7b222a041..28cbdc0ad 100644
--- a/Source/cmSeparateArgumentsCommand.cxx
+++ b/Source/cmSeparateArgumentsCommand.cxx
@@ -36,29 +36,29 @@ bool cmSeparateArgumentsCommand::InitialPass(
     DoingCommand
   };
   Doing doing = DoingVariable;
-  for (unsigned int i = 0; i < args.size(); ++i) {
+  for (std::string const& arg : args) {
     if (doing == DoingVariable) {
-      var = args[i];
+      var = arg;
       doing = DoingMode;
-    } else if (doing == DoingMode && args[i] == "NATIVE_COMMAND") {
+    } else if (doing == DoingMode && arg == "NATIVE_COMMAND") {
 #ifdef _WIN32
       mode = ModeWindows;
 #else
       mode = ModeUnix;
 #endif
       doing = DoingCommand;
-    } else if (doing == DoingMode && args[i] == "UNIX_COMMAND") {
+    } else if (doing == DoingMode && arg == "UNIX_COMMAND") {
       mode = ModeUnix;
       doing = DoingCommand;
-    } else if (doing == DoingMode && args[i] == "WINDOWS_COMMAND") {
+    } else if (doing == DoingMode && arg == "WINDOWS_COMMAND") {
       mode = ModeWindows;
       doing = DoingCommand;
     } else if (doing == DoingCommand) {
-      command = args[i];
+      command = arg;
       doing = DoingNone;
     } else {
       std::ostringstream e;
-      e << "given unknown argument " << args[i];
+      e << "given unknown argument " << arg;
       this->SetError(e.str());
       return false;
     }
@@ -84,19 +84,17 @@ bool cmSeparateArgumentsCommand::InitialPass(
     // Construct the result list value.
     std::string value;
     const char* sep = "";
-    for (std::vector<std::string>::const_iterator vi = vec.begin();
-         vi != vec.end(); ++vi) {
+    for (std::string const& vi : vec) {
       // Separate from the previous argument.
       value += sep;
       sep = ";";
 
       // Preserve semicolons.
-      for (std::string::const_iterator si = vi->begin(); si != vi->end();
-           ++si) {
-        if (*si == ';') {
+      for (char si : vi) {
+        if (si == ';') {
           value += '\\';
         }
-        value += *si;
+        value += si;
       }
     }
     this->Makefile->AddDefinition(var, value.c_str());
diff --git a/Source/cmSeparateArgumentsCommand.h b/Source/cmSeparateArgumentsCommand.h
index 6bf8549cf..988ad23ae 100644
--- a/Source/cmSeparateArgumentsCommand.h
+++ b/Source/cmSeparateArgumentsCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmSeparateArgumentsCommand_h
 #define cmSeparateArgumentsCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmSeparateArgumentsCommand; }
+  cmCommand* Clone() override { return new cmSeparateArgumentsCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmServer.cxx b/Source/cmServer.cxx
index 7fc6ed755..e923c228a 100644
--- a/Source/cmServer.cxx
+++ b/Source/cmServer.cxx
@@ -2,7 +2,9 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmServer.h"
 
-#include "cmServerConnection.h"
+#include "cmAlgorithms.h"
+#include "cmConnection.h"
+#include "cmFileMonitor.h"
 #include "cmServerDictionary.h"
 #include "cmServerProtocol.h"
 #include "cmSystemTools.h"
@@ -14,8 +16,24 @@
 #include <algorithm>
 #include <cassert>
 #include <cstdint>
+#include <iostream>
+#include <memory>
 #include <utility>
 
+void on_signal(uv_signal_t* signal, int signum)
+{
+  auto conn = reinterpret_cast<cmServerBase*>(signal->data);
+  conn->OnSignal(signum);
+}
+
+static void on_walk_to_shutdown(uv_handle_t* handle, void* arg)
+{
+  (void)arg;
+  if (!uv_is_closing(handle)) {
+    uv_close(handle, &cmEventBasedConnection::on_close);
+  }
+}
+
 class cmServer::DebugInfo
 {
 public:
@@ -30,59 +48,46 @@ public:
   uint64_t StartTime;
 };
 
-cmServer::cmServer(cmServerConnection* conn, bool supportExperimental)
-  : Connection(conn)
+cmServer::cmServer(cmConnection* conn, bool supportExperimental)
+  : cmServerBase(conn)
   , SupportExperimental(supportExperimental)
 {
-  this->Connection->SetServer(this);
   // Register supported protocols:
-  this->RegisterProtocol(new cmServerProtocol1_0);
+  this->RegisterProtocol(new cmServerProtocol1);
 }
 
 cmServer::~cmServer()
 {
-  if (!this->Protocol) { // Server was never fully started!
-    return;
-  }
-
   for (cmServerProtocol* p : this->SupportedProtocols) {
     delete p;
   }
-
-  delete this->Connection;
 }
 
-void cmServer::PopOne()
+void cmServer::ProcessRequest(cmConnection* connection,
+                              const std::string& input)
 {
-  if (this->Queue.empty()) {
-    return;
-  }
-
   Json::Reader reader;
   Json::Value value;
-  const std::string input = this->Queue.front();
-  this->Queue.erase(this->Queue.begin());
-
   if (!reader.parse(input, value)) {
-    this->WriteParseError("Failed to parse JSON input.");
+    this->WriteParseError(connection, "Failed to parse JSON input.");
     return;
   }
 
   std::unique_ptr<DebugInfo> debug;
   Json::Value debugValue = value["debug"];
   if (!debugValue.isNull()) {
-    debug = std::make_unique<DebugInfo>();
+    debug = cm::make_unique<DebugInfo>();
     debug->OutputFile = debugValue["dumpToFile"].asString();
     debug->PrintStatistics = debugValue["showStats"].asBool();
   }
 
-  const cmServerRequest request(this, value[kTYPE_KEY].asString(),
+  const cmServerRequest request(this, connection, value[kTYPE_KEY].asString(),
                                 value[kCOOKIE_KEY].asString(), value);
 
-  if (request.Type == "") {
+  if (request.Type.empty()) {
     cmServerResponse response(request);
     response.SetError("No type given in request.");
-    this->WriteResponse(response, nullptr);
+    this->WriteResponse(connection, response, nullptr);
     return;
   }
 
@@ -91,15 +96,18 @@ void cmServer::PopOne()
   if (this->Protocol) {
     this->Protocol->CMakeInstance()->SetProgressCallback(
       reportProgress, const_cast<cmServerRequest*>(&request));
-    this->WriteResponse(this->Protocol->Process(request), debug.get());
+    this->WriteResponse(connection, this->Protocol->Process(request),
+                        debug.get());
   } else {
-    this->WriteResponse(this->SetProtocolVersion(request), debug.get());
+    this->WriteResponse(connection, this->SetProtocolVersion(request),
+                        debug.get());
   }
 }
 
 void cmServer::RegisterProtocol(cmServerProtocol* protocol)
 {
   if (protocol->IsExperimental() && !this->SupportExperimental) {
+    delete protocol;
     return;
   }
   auto version = protocol->ProtocolVersion();
@@ -115,7 +123,7 @@ void cmServer::RegisterProtocol(cmServerProtocol* protocol)
   }
 }
 
-void cmServer::PrintHello() const
+void cmServer::PrintHello(cmConnection* connection) const
 {
   Json::Value hello = Json::objectValue;
   hello[kTYPE_KEY] = "hello";
@@ -134,13 +142,7 @@ void cmServer::PrintHello() const
     protocolVersions.append(tmp);
   }
 
-  this->WriteJsonObject(hello, nullptr);
-}
-
-void cmServer::QueueRequest(const std::string& request)
-{
-  this->Queue.push_back(request);
-  this->PopOne();
+  this->WriteJsonObject(connection, hello, nullptr);
 }
 
 void cmServer::reportProgress(const char* msg, float progress, void* data)
@@ -216,7 +218,7 @@ cmServerResponse cmServer::SetProtocolVersion(const cmServerRequest& request)
 
   std::string errorMessage;
   if (!this->Protocol->Activate(this, request, &errorMessage)) {
-    this->Protocol = CM_NULLPTR;
+    this->Protocol = nullptr;
     return request.ReportError("Failed to activate protocol version: " +
                                errorMessage);
   }
@@ -232,17 +234,28 @@ bool cmServer::Serve(std::string* errorMessage)
   }
   assert(!this->Protocol);
 
-  return Connection->ProcessEvents(errorMessage);
+  return cmServerBase::Serve(errorMessage);
 }
 
 cmFileMonitor* cmServer::FileMonitor() const
 {
-  return Connection->FileMonitor();
+  return fileMonitor.get();
 }
 
 void cmServer::WriteJsonObject(const Json::Value& jsonValue,
                                const DebugInfo* debug) const
 {
+  uv_rwlock_rdlock(&ConnectionsMutex);
+  for (auto& connection : this->Connections) {
+    WriteJsonObject(connection.get(), jsonValue, debug);
+  }
+  uv_rwlock_rdunlock(&ConnectionsMutex);
+}
+
+void cmServer::WriteJsonObject(cmConnection* connection,
+                               const Json::Value& jsonValue,
+                               const DebugInfo* debug) const
+{
   Json::FastWriter writer;
 
   auto beforeJson = uv_hrtime();
@@ -272,8 +285,7 @@ void cmServer::WriteJsonObject(const Json::Value& jsonValue,
     }
   }
 
-  Connection->WriteData(std::string("\n") + kSTART_MAGIC + std::string("\n") +
-                        result + kEND_MAGIC + std::string("\n"));
+  connection->WriteData(result);
 }
 
 cmServerProtocol* cmServer::FindMatchingProtocol(
@@ -311,7 +323,7 @@ void cmServer::WriteProgress(const cmServerRequest& request, int min,
   obj[kPROGRESS_MAXIMUM_KEY] = max;
   obj[kPROGRESS_CURRENT_KEY] = current;
 
-  this->WriteJsonObject(obj, nullptr);
+  this->WriteJsonObject(request.Connection, obj, nullptr);
 }
 
 void cmServer::WriteMessage(const cmServerRequest& request,
@@ -331,10 +343,11 @@ void cmServer::WriteMessage(const cmServerRequest& request,
     obj[kTITLE_KEY] = title;
   }
 
-  WriteJsonObject(obj, nullptr);
+  WriteJsonObject(request.Connection, obj, nullptr);
 }
 
-void cmServer::WriteParseError(const std::string& message) const
+void cmServer::WriteParseError(cmConnection* connection,
+                               const std::string& message) const
 {
   Json::Value obj = Json::objectValue;
   obj[kTYPE_KEY] = kERROR_TYPE;
@@ -342,7 +355,7 @@ void cmServer::WriteParseError(const std::string& message) const
   obj[kREPLY_TO_KEY] = "";
   obj[kCOOKIE_KEY] = "";
 
-  this->WriteJsonObject(obj, nullptr);
+  this->WriteJsonObject(connection, obj, nullptr);
 }
 
 void cmServer::WriteSignal(const std::string& name,
@@ -358,7 +371,8 @@ void cmServer::WriteSignal(const std::string& name,
   WriteJsonObject(obj, nullptr);
 }
 
-void cmServer::WriteResponse(const cmServerResponse& response,
+void cmServer::WriteResponse(cmConnection* connection,
+                             const cmServerResponse& response,
                              const DebugInfo* debug) const
 {
   assert(response.IsComplete());
@@ -371,5 +385,188 @@ void cmServer::WriteResponse(const cmServerResponse& response,
     obj[kERROR_MESSAGE_KEY] = response.ErrorMessage();
   }
 
-  this->WriteJsonObject(obj, debug);
+  this->WriteJsonObject(connection, obj, debug);
+}
+
+void cmServer::OnConnected(cmConnection* connection)
+{
+  PrintHello(connection);
+}
+
+void cmServer::OnServeStart()
+{
+  cmServerBase::OnServeStart();
+  fileMonitor = std::make_shared<cmFileMonitor>(GetLoop());
+}
+
+void cmServer::StartShutDown()
+{
+  if (fileMonitor) {
+    fileMonitor->StopMonitoring();
+    fileMonitor.reset();
+  }
+  cmServerBase::StartShutDown();
+}
+
+static void __start_thread(void* arg)
+{
+  auto server = reinterpret_cast<cmServerBase*>(arg);
+  std::string error;
+  bool success = server->Serve(&error);
+  if (!success || error.empty() == false) {
+    std::cerr << "Error during serve: " << error << std::endl;
+  }
+}
+
+static void __shutdownThread(uv_async_t* arg)
+{
+  auto server = reinterpret_cast<cmServerBase*>(arg->data);
+  on_walk_to_shutdown(reinterpret_cast<uv_handle_t*>(arg), nullptr);
+  server->StartShutDown();
+}
+
+bool cmServerBase::StartServeThread()
+{
+  ServeThreadRunning = true;
+  uv_async_init(&Loop, &this->ShutdownSignal, __shutdownThread);
+  this->ShutdownSignal.data = this;
+  uv_thread_create(&ServeThread, __start_thread, this);
+  return true;
+}
+
+bool cmServerBase::Serve(std::string* errorMessage)
+{
+#ifndef NDEBUG
+  uv_thread_t blank_thread_t = {};
+  assert(uv_thread_equal(&blank_thread_t, &ServeThreadId));
+  ServeThreadId = uv_thread_self();
+#endif
+
+  errorMessage->clear();
+
+  uv_signal_init(&Loop, &this->SIGINTHandler);
+  uv_signal_init(&Loop, &this->SIGHUPHandler);
+
+  this->SIGINTHandler.data = this;
+  this->SIGHUPHandler.data = this;
+
+  uv_signal_start(&this->SIGINTHandler, &on_signal, SIGINT);
+  uv_signal_start(&this->SIGHUPHandler, &on_signal, SIGHUP);
+
+  OnServeStart();
+
+  {
+    uv_rwlock_rdlock(&ConnectionsMutex);
+    for (auto& connection : Connections) {
+      if (!connection->OnServeStart(errorMessage)) {
+        uv_rwlock_rdunlock(&ConnectionsMutex);
+        return false;
+      }
+    }
+    uv_rwlock_rdunlock(&ConnectionsMutex);
+  }
+
+  if (uv_run(&Loop, UV_RUN_DEFAULT) != 0) {
+    // It is important we don't ever let the event loop exit with open handles
+    // at best this is a memory leak, but it can also introduce race conditions
+    // which can hang the program.
+    assert(false && "Event loop stopped in unclean state.");
+
+    *errorMessage = "Internal Error: Event loop stopped in unclean state.";
+    return false;
+  }
+
+  ServeThreadRunning = false;
+  return true;
+}
+
+void cmServerBase::OnConnected(cmConnection*)
+{
+}
+
+void cmServerBase::OnServeStart()
+{
+}
+
+void cmServerBase::StartShutDown()
+{
+  if (!uv_is_closing(
+        reinterpret_cast<const uv_handle_t*>(&this->SIGINTHandler))) {
+    uv_signal_stop(&this->SIGINTHandler);
+  }
+
+  if (!uv_is_closing(
+        reinterpret_cast<const uv_handle_t*>(&this->SIGHUPHandler))) {
+    uv_signal_stop(&this->SIGHUPHandler);
+  }
+
+  {
+    uv_rwlock_wrlock(&ConnectionsMutex);
+    for (auto& connection : Connections) {
+      connection->OnConnectionShuttingDown();
+    }
+    Connections.clear();
+    uv_rwlock_wrunlock(&ConnectionsMutex);
+  }
+
+  uv_walk(&Loop, on_walk_to_shutdown, nullptr);
+}
+
+bool cmServerBase::OnSignal(int signum)
+{
+  (void)signum;
+  StartShutDown();
+  return true;
+}
+
+cmServerBase::cmServerBase(cmConnection* connection)
+{
+  auto err = uv_loop_init(&Loop);
+  (void)err;
+  assert(err == 0);
+
+  err = uv_rwlock_init(&ConnectionsMutex);
+  assert(err == 0);
+
+  AddNewConnection(connection);
+}
+
+cmServerBase::~cmServerBase()
+{
+
+  if (ServeThreadRunning) {
+    uv_async_send(&this->ShutdownSignal);
+    uv_thread_join(&ServeThread);
+  }
+
+  uv_loop_close(&Loop);
+  uv_rwlock_destroy(&ConnectionsMutex);
+}
+
+void cmServerBase::AddNewConnection(cmConnection* ownedConnection)
+{
+  uv_rwlock_wrlock(&ConnectionsMutex);
+  Connections.emplace_back(ownedConnection);
+  uv_rwlock_wrunlock(&ConnectionsMutex);
+  ownedConnection->SetServer(this);
+}
+
+uv_loop_t* cmServerBase::GetLoop()
+{
+  return &Loop;
+}
+
+void cmServerBase::OnDisconnect(cmConnection* pConnection)
+{
+  auto pred = [pConnection](const std::unique_ptr<cmConnection>& m) {
+    return m.get() == pConnection;
+  };
+  uv_rwlock_wrlock(&ConnectionsMutex);
+  Connections.erase(
+    std::remove_if(Connections.begin(), Connections.end(), pred),
+    Connections.end());
+  uv_rwlock_wrunlock(&ConnectionsMutex);
+  if (Connections.empty()) {
+    StartShutDown();
+  }
 }
diff --git a/Source/cmServer.h b/Source/cmServer.h
index b8140504c..15fd2baee 100644
--- a/Source/cmServer.h
+++ b/Source/cmServer.h
@@ -2,31 +2,98 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #pragma once
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cm_jsoncpp_value.h"
 #include "cm_uv.h"
 
+#include <memory> // IWYU pragma: keep
 #include <string>
 #include <vector>
 
+class cmConnection;
 class cmFileMonitor;
-class cmServerConnection;
 class cmServerProtocol;
 class cmServerRequest;
 class cmServerResponse;
 
-class cmServer
+/***
+ * This essentially hold and manages a libuv event queue and responds to
+ * messages
+ * on any of its connections.
+ */
+class cmServerBase
+{
+public:
+  cmServerBase(cmConnection* connection);
+  virtual ~cmServerBase();
+
+  virtual void AddNewConnection(cmConnection* ownedConnection);
+
+  /***
+   * The main override responsible for tailoring behavior towards
+   * whatever the given server is supposed to do
+   *
+   * This should almost always be called by the given connections
+   * directly.
+   *
+   * @param connection The connection the request was received on
+   * @param request The actual request
+   */
+  virtual void ProcessRequest(cmConnection* connection,
+                              const std::string& request) = 0;
+  virtual void OnConnected(cmConnection* connection);
+
+  /***
+   * Start a dedicated thread. If this is used to start the server, it will
+   * join on the
+   * servers dtor.
+   */
+  virtual bool StartServeThread();
+  virtual bool Serve(std::string* errorMessage);
+
+  virtual void OnServeStart();
+  virtual void StartShutDown();
+
+  virtual bool OnSignal(int signum);
+  uv_loop_t* GetLoop();
+
+  void OnDisconnect(cmConnection* pConnection);
+
+protected:
+  mutable uv_rwlock_t ConnectionsMutex;
+  std::vector<std::unique_ptr<cmConnection>> Connections;
+
+  bool ServeThreadRunning = false;
+  uv_thread_t ServeThread;
+  uv_async_t ShutdownSignal;
+#ifndef NDEBUG
+public:
+  // When the server starts it will mark down it's current thread ID,
+  // which is useful in other contexts to just assert that operations
+  // are performed on that same thread.
+  uv_thread_t ServeThreadId = {};
+
+protected:
+#endif
+
+  uv_loop_t Loop;
+
+  uv_signal_t SIGINTHandler;
+  uv_signal_t SIGHUPHandler;
+};
+
+class cmServer : public cmServerBase
 {
   CM_DISABLE_COPY(cmServer)
 
 public:
   class DebugInfo;
 
-  cmServer(cmServerConnection* conn, bool supportExperimental);
-  ~cmServer();
+  cmServer(cmConnection* conn, bool supportExperimental);
+  ~cmServer() override;
 
-  bool Serve(std::string* errorMessage);
+  bool Serve(std::string* errorMessage) override;
 
   cmFileMonitor* FileMonitor() const;
 
@@ -34,9 +101,20 @@ private:
   void RegisterProtocol(cmServerProtocol* protocol);
 
   // Callbacks from cmServerConnection:
-  void PopOne();
-  void QueueRequest(const std::string& request);
 
+  void ProcessRequest(cmConnection* connection,
+                      const std::string& request) override;
+  std::shared_ptr<cmFileMonitor> fileMonitor;
+
+public:
+  void OnServeStart() override;
+
+  void StartShutDown() override;
+
+public:
+  void OnConnected(cmConnection* connection) override;
+
+private:
   static void reportProgress(const char* msg, float progress, void* data);
   static void reportMessage(const char* msg, const char* title, bool& cancel,
                             void* data);
@@ -44,50 +122,34 @@ private:
   // Handle requests:
   cmServerResponse SetProtocolVersion(const cmServerRequest& request);
 
-  void PrintHello() const;
+  void PrintHello(cmConnection* connection) const;
 
   // Write responses:
   void WriteProgress(const cmServerRequest& request, int min, int current,
                      int max, const std::string& message) const;
   void WriteMessage(const cmServerRequest& request, const std::string& message,
                     const std::string& title) const;
-  void WriteResponse(const cmServerResponse& response,
+  void WriteResponse(cmConnection* connection,
+                     const cmServerResponse& response,
                      const DebugInfo* debug) const;
-  void WriteParseError(const std::string& message) const;
+  void WriteParseError(cmConnection* connection,
+                       const std::string& message) const;
   void WriteSignal(const std::string& name, const Json::Value& obj) const;
 
   void WriteJsonObject(Json::Value const& jsonValue,
                        const DebugInfo* debug) const;
 
+  void WriteJsonObject(cmConnection* connection, Json::Value const& jsonValue,
+                       const DebugInfo* debug) const;
+
   static cmServerProtocol* FindMatchingProtocol(
     const std::vector<cmServerProtocol*>& protocols, int major, int minor);
 
-  cmServerConnection* Connection = nullptr;
   const bool SupportExperimental;
 
   cmServerProtocol* Protocol = nullptr;
   std::vector<cmServerProtocol*> SupportedProtocols;
-  std::vector<std::string> Queue;
-
-  std::string DataBuffer;
-  std::string JsonData;
-
-  uv_loop_t* Loop = nullptr;
-
-  typedef union
-  {
-    uv_tty_t tty;
-    uv_pipe_t pipe;
-  } InOutUnion;
-
-  InOutUnion Input;
-  InOutUnion Output;
-  uv_stream_t* InputStream = nullptr;
-  uv_stream_t* OutputStream = nullptr;
-
-  mutable bool Writing = false;
 
-  friend class cmServerConnection;
   friend class cmServerProtocol;
   friend class cmServerRequest;
 };
diff --git a/Source/cmServerConnection.cxx b/Source/cmServerConnection.cxx
index 36312edf4..44af75f82 100644
--- a/Source/cmServerConnection.cxx
+++ b/Source/cmServerConnection.cxx
@@ -2,376 +2,193 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmServerConnection.h"
 
-#include "cmFileMonitor.h"
+#include "cmConfigure.h"
 #include "cmServer.h"
 #include "cmServerDictionary.h"
+#ifdef _WIN32
+#include "io.h"
+#else
+#include <unistd.h>
+#endif
+#include <cassert>
 
-#include <assert.h>
-#include <string.h>
-
-namespace {
-
-struct write_req_t
-{
-  uv_write_t req;
-  uv_buf_t buf;
-};
-
-void on_alloc_buffer(uv_handle_t* handle, size_t suggested_size, uv_buf_t* buf)
+cmStdIoConnection::cmStdIoConnection(
+  cmConnectionBufferStrategy* bufferStrategy)
+  : cmEventBasedConnection(bufferStrategy)
 {
-  (void)(handle);
-  char* rawBuffer = new char[suggested_size];
-  *buf = uv_buf_init(rawBuffer, static_cast<unsigned int>(suggested_size));
 }
 
-void on_read(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf)
+void cmStdIoConnection::SetupStream(uv_stream_t*& stream, int file_id)
 {
-  auto conn = reinterpret_cast<cmServerConnection*>(stream->data);
-  if (nread >= 0) {
-    conn->ReadData(std::string(buf->base, buf->base + nread));
-  } else {
-    conn->TriggerShutdown();
+  assert(stream == nullptr);
+  switch (uv_guess_handle(file_id)) {
+    case UV_TTY: {
+      auto tty = new uv_tty_t();
+      uv_tty_init(this->Server->GetLoop(), tty, file_id, file_id == 0);
+      uv_tty_set_mode(tty, UV_TTY_MODE_NORMAL);
+      stream = reinterpret_cast<uv_stream_t*>(tty);
+      break;
+    }
+    case UV_FILE:
+      if (file_id == 0) {
+        return;
+      }
+      // Intentional fallthrough; stdin can _not_ be treated as a named
+      // pipe, however stdout can be.
+      CM_FALLTHROUGH;
+    case UV_NAMED_PIPE: {
+      auto pipe = new uv_pipe_t();
+      uv_pipe_init(this->Server->GetLoop(), pipe, 0);
+      uv_pipe_open(pipe, file_id);
+      stream = reinterpret_cast<uv_stream_t*>(pipe);
+      break;
+    }
+    default:
+      assert(false && "Unable to determine stream type");
+      return;
   }
-
-  delete[](buf->base);
+  stream->data = static_cast<cmEventBasedConnection*>(this);
 }
 
-void on_write(uv_write_t* req, int status)
+void cmStdIoConnection::SetServer(cmServerBase* s)
 {
-  (void)(status);
-  auto conn = reinterpret_cast<cmServerConnection*>(req->data);
-
-  // Free req and buffer
-  write_req_t* wr = reinterpret_cast<write_req_t*>(req);
-  delete[](wr->buf.base);
-  delete wr;
+  cmConnection::SetServer(s);
+  if (!s) {
+    return;
+  }
 
-  conn->ProcessNextRequest();
+  SetupStream(this->ReadStream, 0);
+  SetupStream(this->WriteStream, 1);
 }
 
-void on_new_connection(uv_stream_t* stream, int status)
+void shutdown_connection(uv_prepare_t* prepare)
 {
-  (void)(status);
-  auto conn = reinterpret_cast<cmServerConnection*>(stream->data);
-  conn->Connect(stream);
-}
+  cmStdIoConnection* connection =
+    reinterpret_cast<cmStdIoConnection*>(prepare->data);
 
-void on_signal(uv_signal_t* signal, int signum)
-{
-  auto conn = reinterpret_cast<cmServerConnection*>(signal->data);
-  (void)(signum);
-  conn->TriggerShutdown();
+  if (!uv_is_closing(reinterpret_cast<uv_handle_t*>(prepare))) {
+    uv_close(reinterpret_cast<uv_handle_t*>(prepare),
+             &cmEventBasedConnection::on_close_delete<uv_prepare_t>);
+  }
+  connection->OnDisconnect(0);
 }
 
-void on_signal_close(uv_handle_t* handle)
+bool cmStdIoConnection::OnServeStart(std::string* pString)
 {
-  delete reinterpret_cast<uv_signal_t*>(handle);
-}
+  Server->OnConnected(this);
+  if (this->ReadStream) {
+    uv_read_start(this->ReadStream, on_alloc_buffer, on_read);
+  } else if (uv_guess_handle(0) == UV_FILE) {
+    char buffer[1024];
+    while (auto len = read(0, buffer, sizeof(buffer))) {
+      ReadData(std::string(buffer, buffer + len));
+    }
 
-void on_pipe_close(uv_handle_t* handle)
-{
-  delete reinterpret_cast<uv_pipe_t*>(handle);
+    // We can't start the disconnect from here, add a prepare hook to do that
+    // for us
+    auto prepare = new uv_prepare_t();
+    prepare->data = this;
+    uv_prepare_init(Server->GetLoop(), prepare);
+    uv_prepare_start(prepare, shutdown_connection);
+  }
+  return cmConnection::OnServeStart(pString);
 }
 
-void on_tty_close(uv_handle_t* handle)
+void cmStdIoConnection::ShutdownStream(uv_stream_t*& stream)
 {
-  delete reinterpret_cast<uv_tty_t*>(handle);
-}
+  if (!stream) {
+    return;
+  }
+  switch (stream->type) {
+    case UV_TTY: {
+      assert(!uv_is_closing(reinterpret_cast<uv_handle_t*>(stream)));
+      if (!uv_is_closing(reinterpret_cast<uv_handle_t*>(stream))) {
+        uv_close(reinterpret_cast<uv_handle_t*>(stream),
+                 &on_close_delete<uv_tty_t>);
+      }
+      break;
+    }
+    case UV_FILE:
+    case UV_NAMED_PIPE: {
+      assert(!uv_is_closing(reinterpret_cast<uv_handle_t*>(stream)));
+      if (!uv_is_closing(reinterpret_cast<uv_handle_t*>(stream))) {
+        uv_close(reinterpret_cast<uv_handle_t*>(stream),
+                 &on_close_delete<uv_pipe_t>);
+      }
+      break;
+    }
+    default:
+      assert(false && "Unable to determine stream type");
+  }
 
-} // namespace
+  stream = nullptr;
+}
 
-class LoopGuard
+bool cmStdIoConnection::OnConnectionShuttingDown()
 {
-public:
-  LoopGuard(cmServerConnection* connection)
-    : Connection(connection)
-  {
-    this->Connection->mLoop = uv_default_loop();
-    if (!this->Connection->mLoop) {
-      return;
-    }
-    this->Connection->mFileMonitor =
-      new cmFileMonitor(this->Connection->mLoop);
+  if (ReadStream) {
+    uv_read_stop(ReadStream);
   }
 
-  ~LoopGuard()
-  {
-    if (!this->Connection->mLoop) {
-      return;
-    }
+  ShutdownStream(ReadStream);
+  ShutdownStream(WriteStream);
 
-    if (this->Connection->mFileMonitor) {
-      delete this->Connection->mFileMonitor;
-    }
-    uv_loop_close(this->Connection->mLoop);
-    this->Connection->mLoop = nullptr;
-  }
+  cmEventBasedConnection::OnConnectionShuttingDown();
 
-private:
-  cmServerConnection* Connection;
-};
+  return true;
+}
 
-cmServerConnection::cmServerConnection()
+cmServerPipeConnection::cmServerPipeConnection(const std::string& name)
+  : cmPipeConnection(name, new cmServerBufferStrategy)
 {
 }
 
-cmServerConnection::~cmServerConnection()
+cmServerStdIoConnection::cmServerStdIoConnection()
+  : cmStdIoConnection(new cmServerBufferStrategy)
 {
 }
 
-void cmServerConnection::SetServer(cmServer* s)
+cmConnectionBufferStrategy::~cmConnectionBufferStrategy()
 {
-  this->Server = s;
 }
 
-bool cmServerConnection::ProcessEvents(std::string* errorMessage)
+void cmConnectionBufferStrategy::clear()
 {
-  assert(this->Server);
-  errorMessage->clear();
-
-  this->RawReadBuffer.clear();
-  this->RequestBuffer.clear();
-
-  LoopGuard guard(this);
-  (void)(guard);
-  if (!this->mLoop) {
-    *errorMessage = "Internal Error: Failed to create event loop.";
-    return false;
-  }
-
-  this->SIGINTHandler = new uv_signal_t;
-  uv_signal_init(this->mLoop, this->SIGINTHandler);
-  this->SIGINTHandler->data = static_cast<void*>(this);
-  uv_signal_start(this->SIGINTHandler, &on_signal, SIGINT);
-
-  this->SIGHUPHandler = new uv_signal_t;
-  uv_signal_init(this->mLoop, this->SIGHUPHandler);
-  this->SIGHUPHandler->data = static_cast<void*>(this);
-  uv_signal_start(this->SIGHUPHandler, &on_signal, SIGHUP);
-
-  if (!DoSetup(errorMessage)) {
-    return false;
-  }
-
-  if (uv_run(this->mLoop, UV_RUN_DEFAULT) != 0) {
-    *errorMessage = "Internal Error: Event loop stopped in unclean state.";
-    return false;
-  }
-
-  // These need to be cleaned up by now:
-  assert(!this->ReadStream);
-  assert(!this->WriteStream);
-
-  this->RawReadBuffer.clear();
-  this->RequestBuffer.clear();
-
-  return true;
 }
 
-void cmServerConnection::ReadData(const std::string& data)
+std::string cmServerBufferStrategy::BufferOutMessage(
+  const std::string& rawBuffer) const
 {
-  this->RawReadBuffer += data;
+  return std::string("\n") + kSTART_MAGIC + std::string("\n") + rawBuffer +
+    kEND_MAGIC + std::string("\n");
+}
 
+std::string cmServerBufferStrategy::BufferMessage(std::string& RawReadBuffer)
+{
   for (;;) {
-    auto needle = this->RawReadBuffer.find('\n');
+    auto needle = RawReadBuffer.find('\n');
 
     if (needle == std::string::npos) {
-      return;
+      return "";
     }
-    std::string line = this->RawReadBuffer.substr(0, needle);
+    std::string line = RawReadBuffer.substr(0, needle);
     const auto ls = line.size();
     if (ls > 1 && line.at(ls - 1) == '\r') {
       line.erase(ls - 1, 1);
     }
-    this->RawReadBuffer.erase(this->RawReadBuffer.begin(),
-                              this->RawReadBuffer.begin() +
-                                static_cast<long>(needle) + 1);
+    RawReadBuffer.erase(RawReadBuffer.begin(),
+                        RawReadBuffer.begin() + static_cast<long>(needle) + 1);
     if (line == kSTART_MAGIC) {
-      this->RequestBuffer.clear();
+      RequestBuffer.clear();
       continue;
     }
     if (line == kEND_MAGIC) {
-      this->Server->QueueRequest(this->RequestBuffer);
-      this->RequestBuffer.clear();
-    } else {
-      this->RequestBuffer += line;
-      this->RequestBuffer += "\n";
+      std::string rtn;
+      rtn.swap(this->RequestBuffer);
+      return rtn;
     }
-  }
-}
-
-void cmServerConnection::TriggerShutdown()
-{
-  this->FileMonitor()->StopMonitoring();
-
-  uv_signal_stop(this->SIGINTHandler);
-  uv_signal_stop(this->SIGHUPHandler);
-
-  uv_close(reinterpret_cast<uv_handle_t*>(this->SIGINTHandler),
-           &on_signal_close); // delete handle
-  uv_close(reinterpret_cast<uv_handle_t*>(this->SIGHUPHandler),
-           &on_signal_close); // delete handle
-
-  this->SIGINTHandler = nullptr;
-  this->SIGHUPHandler = nullptr;
 
-  this->TearDown();
-}
-
-void cmServerConnection::WriteData(const std::string& data)
-{
-  assert(this->WriteStream);
-
-  auto ds = data.size();
-
-  write_req_t* req = new write_req_t;
-  req->req.data = this;
-  req->buf = uv_buf_init(new char[ds], static_cast<unsigned int>(ds));
-  memcpy(req->buf.base, data.c_str(), ds);
-
-  uv_write(reinterpret_cast<uv_write_t*>(req),
-           static_cast<uv_stream_t*>(this->WriteStream), &req->buf, 1,
-           on_write);
-}
-
-void cmServerConnection::ProcessNextRequest()
-{
-  Server->PopOne();
-}
-
-void cmServerConnection::SendGreetings()
-{
-  Server->PrintHello();
-}
-
-cmServerStdIoConnection::cmServerStdIoConnection()
-{
-  this->Input.tty = nullptr;
-  this->Output.tty = nullptr;
-}
-
-bool cmServerStdIoConnection::DoSetup(std::string* errorMessage)
-{
-  (void)(errorMessage);
-
-  if (uv_guess_handle(1) == UV_TTY) {
-    usesTty = true;
-    this->Input.tty = new uv_tty_t;
-    uv_tty_init(this->Loop(), this->Input.tty, 0, 1);
-    uv_tty_set_mode(this->Input.tty, UV_TTY_MODE_NORMAL);
-    Input.tty->data = this;
-    this->ReadStream = reinterpret_cast<uv_stream_t*>(this->Input.tty);
-
-    this->Output.tty = new uv_tty_t;
-    uv_tty_init(this->Loop(), this->Output.tty, 1, 0);
-    uv_tty_set_mode(this->Output.tty, UV_TTY_MODE_NORMAL);
-    Output.tty->data = this;
-    this->WriteStream = reinterpret_cast<uv_stream_t*>(this->Output.tty);
-  } else {
-    usesTty = false;
-    this->Input.pipe = new uv_pipe_t;
-    uv_pipe_init(this->Loop(), this->Input.pipe, 0);
-    uv_pipe_open(this->Input.pipe, 0);
-    Input.pipe->data = this;
-    this->ReadStream = reinterpret_cast<uv_stream_t*>(this->Input.pipe);
-
-    this->Output.pipe = new uv_pipe_t;
-    uv_pipe_init(this->Loop(), this->Output.pipe, 0);
-    uv_pipe_open(this->Output.pipe, 1);
-    Output.pipe->data = this;
-    this->WriteStream = reinterpret_cast<uv_stream_t*>(this->Output.pipe);
-  }
-
-  SendGreetings();
-  uv_read_start(this->ReadStream, on_alloc_buffer, on_read);
-
-  return true;
-}
-
-void cmServerStdIoConnection::TearDown()
-{
-  if (usesTty) {
-    uv_close(reinterpret_cast<uv_handle_t*>(this->Input.tty), &on_tty_close);
-    uv_close(reinterpret_cast<uv_handle_t*>(this->Output.tty), &on_tty_close);
-    this->Input.tty = nullptr;
-    this->Output.tty = nullptr;
-  } else {
-    uv_close(reinterpret_cast<uv_handle_t*>(this->Input.pipe), &on_pipe_close);
-    uv_close(reinterpret_cast<uv_handle_t*>(this->Output.pipe),
-             &on_pipe_close);
-    this->Input.pipe = nullptr;
-    this->Input.pipe = nullptr;
+    this->RequestBuffer += line;
+    this->RequestBuffer += "\n";
   }
-  this->ReadStream = nullptr;
-  this->WriteStream = nullptr;
-}
-
-cmServerPipeConnection::cmServerPipeConnection(const std::string& name)
-  : PipeName(name)
-{
-}
-
-bool cmServerPipeConnection::DoSetup(std::string* errorMessage)
-{
-  this->ServerPipe = new uv_pipe_t;
-  uv_pipe_init(this->Loop(), this->ServerPipe, 0);
-  this->ServerPipe->data = this;
-
-  int r;
-  if ((r = uv_pipe_bind(this->ServerPipe, this->PipeName.c_str())) != 0) {
-    *errorMessage = std::string("Internal Error with ") + this->PipeName +
-      ": " + uv_err_name(r);
-    return false;
-  }
-  auto serverStream = reinterpret_cast<uv_stream_t*>(this->ServerPipe);
-  if ((r = uv_listen(serverStream, 1, on_new_connection)) != 0) {
-    *errorMessage = std::string("Internal Error listening on ") +
-      this->PipeName + ": " + uv_err_name(r);
-    return false;
-  }
-
-  return true;
-}
-
-void cmServerPipeConnection::TearDown()
-{
-  if (this->ClientPipe) {
-    uv_close(reinterpret_cast<uv_handle_t*>(this->ClientPipe), &on_pipe_close);
-    this->WriteStream->data = nullptr;
-  }
-  uv_close(reinterpret_cast<uv_handle_t*>(this->ServerPipe), &on_pipe_close);
-
-  this->ClientPipe = nullptr;
-  this->ServerPipe = nullptr;
-  this->WriteStream = nullptr;
-  this->ReadStream = nullptr;
-}
-
-void cmServerPipeConnection::Connect(uv_stream_t* server)
-{
-  if (this->ClientPipe) {
-    // Accept and close all pipes but the first:
-    uv_pipe_t* rejectPipe = new uv_pipe_t;
-
-    uv_pipe_init(this->Loop(), rejectPipe, 0);
-    auto rejecter = reinterpret_cast<uv_stream_t*>(rejectPipe);
-    uv_accept(server, rejecter);
-    uv_close(reinterpret_cast<uv_handle_t*>(rejecter), &on_pipe_close);
-    return;
-  }
-
-  this->ClientPipe = new uv_pipe_t;
-  uv_pipe_init(this->Loop(), this->ClientPipe, 0);
-  this->ClientPipe->data = this;
-  auto client = reinterpret_cast<uv_stream_t*>(this->ClientPipe);
-  if (uv_accept(server, client) != 0) {
-    uv_close(reinterpret_cast<uv_handle_t*>(client), nullptr);
-    return;
-  }
-  this->ReadStream = client;
-  this->WriteStream = client;
-
-  uv_read_start(this->ReadStream, on_alloc_buffer, on_read);
-
-  this->SendGreetings();
 }
diff --git a/Source/cmServerConnection.h b/Source/cmServerConnection.h
index b96bf3c54..4ca908ddf 100644
--- a/Source/cmServerConnection.h
+++ b/Source/cmServerConnection.h
@@ -2,94 +2,66 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #pragma once
 
-#include "cmConfigure.h"
-
-#include "cm_uv.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
-class cmFileMonitor;
-class cmServer;
+#include "cmConnection.h"
+#include "cmPipeConnection.h"
+#include "cm_uv.h"
 
-class cmServerConnection
-{
-  CM_DISABLE_COPY(cmServerConnection)
+class cmServerBase;
 
+/***
+ * This connection buffer strategy accepts messages in the form of
+ * [== "CMake Server" ==[
+{
+  ... some JSON message ...
+}
+]== "CMake Server" ==]
+ * and only passes on the core json; it discards the envelope.
+ */
+class cmServerBufferStrategy : public cmConnectionBufferStrategy
+{
 public:
-  cmServerConnection();
-  virtual ~cmServerConnection();
-
-  void SetServer(cmServer* s);
+  std::string BufferMessage(std::string& rawBuffer) override;
+  std::string BufferOutMessage(const std::string& rawBuffer) const override;
 
-  bool ProcessEvents(std::string* errorMessage);
-
-  void ReadData(const std::string& data);
-  void TriggerShutdown();
-  void WriteData(const std::string& data);
-  void ProcessNextRequest();
-
-  virtual void Connect(uv_stream_t* server) { (void)(server); }
-
-  cmFileMonitor* FileMonitor() const { return this->mFileMonitor; }
-
-protected:
-  virtual bool DoSetup(std::string* errorMessage) = 0;
-  virtual void TearDown() = 0;
+private:
+  std::string RequestBuffer;
+};
 
-  void SendGreetings();
+/***
+ * Generic connection over std io interfaces -- tty
+ */
+class cmStdIoConnection : public cmEventBasedConnection
+{
+public:
+  cmStdIoConnection(cmConnectionBufferStrategy* bufferStrategy);
 
-  uv_loop_t* Loop() const { return mLoop; }
+  void SetServer(cmServerBase* s) override;
 
-protected:
-  std::string RawReadBuffer;
-  std::string RequestBuffer;
+  bool OnConnectionShuttingDown() override;
 
-  uv_stream_t* ReadStream = nullptr;
-  uv_stream_t* WriteStream = nullptr;
+  bool OnServeStart(std::string* pString) override;
 
 private:
-  uv_loop_t* mLoop = nullptr;
-  cmFileMonitor* mFileMonitor = nullptr;
-  cmServer* Server = nullptr;
-  uv_signal_t* SIGINTHandler = nullptr;
-  uv_signal_t* SIGHUPHandler = nullptr;
-
-  friend class LoopGuard;
+  void SetupStream(uv_stream_t*& stream, int file_id);
+  void ShutdownStream(uv_stream_t*& stream);
 };
 
-class cmServerStdIoConnection : public cmServerConnection
+/***
+ * These specific connections use the cmake server
+ * buffering strategy.
+ */
+class cmServerStdIoConnection : public cmStdIoConnection
 {
 public:
   cmServerStdIoConnection();
-  bool DoSetup(std::string* errorMessage) override;
-
-  void TearDown() override;
-
-private:
-  typedef union
-  {
-    uv_tty_t* tty;
-    uv_pipe_t* pipe;
-  } InOutUnion;
-
-  bool usesTty = false;
-
-  InOutUnion Input;
-  InOutUnion Output;
 };
 
-class cmServerPipeConnection : public cmServerConnection
+class cmServerPipeConnection : public cmPipeConnection
 {
 public:
   cmServerPipeConnection(const std::string& name);
-  bool DoSetup(std::string* errorMessage) override;
-
-  void TearDown() override;
-
-  void Connect(uv_stream_t* server) override;
-
-private:
-  const std::string PipeName;
-  uv_pipe_t* ServerPipe = nullptr;
-  uv_pipe_t* ClientPipe = nullptr;
 };
diff --git a/Source/cmServerDictionary.h b/Source/cmServerDictionary.h
index e6a7ae6ca..405ff6b12 100644
--- a/Source/cmServerDictionary.h
+++ b/Source/cmServerDictionary.h
@@ -89,6 +89,11 @@ static const std::string kWARN_UNUSED_KEY = "warnUnused";
 static const std::string kWATCHED_DIRECTORIES_KEY = "watchedDirectories";
 static const std::string kWATCHED_FILES_KEY = "watchedFiles";
 
+static const std::string kTARGET_CROSS_REFERENCES_KEY = "crossReferences";
+static const std::string kLINE_NUMBER_KEY = "line";
+static const std::string kBACKTRACE_KEY = "backtrace";
+static const std::string kRELATED_STATEMENTS_KEY = "relatedStatements";
+
 static const std::string kSTART_MAGIC = "[== \"CMake Server\" ==[";
 static const std::string kEND_MAGIC = "]== \"CMake Server\" ==]";
 
diff --git a/Source/cmServerProtocol.cxx b/Source/cmServerProtocol.cxx
index c5b7f6064..e835b7a2c 100644
--- a/Source/cmServerProtocol.cxx
+++ b/Source/cmServerProtocol.cxx
@@ -2,12 +2,14 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmServerProtocol.h"
 
+#include "cmAlgorithms.h"
 #include "cmExternalMakefileProjectGenerator.h"
 #include "cmFileMonitor.h"
 #include "cmGeneratorExpression.h"
 #include "cmGeneratorTarget.h"
 #include "cmGlobalGenerator.h"
 #include "cmLinkLineComputer.h"
+#include "cmListFileCache.h"
 #include "cmLocalGenerator.h"
 #include "cmMakefile.h"
 #include "cmServer.h"
@@ -18,6 +20,7 @@
 #include "cmStateSnapshot.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
+#include "cmTarget.h"
 #include "cm_uv.h"
 #include "cmake.h"
 
@@ -63,7 +66,7 @@ template <class T>
 Json::Value fromStringList(const T& in)
 {
   Json::Value result = Json::arrayValue;
-  for (const std::string& i : in) {
+  for (std::string const& i : in) {
     result.append(i);
   }
   return result;
@@ -72,7 +75,7 @@ Json::Value fromStringList(const T& in)
 std::vector<std::string> toStringList(const Json::Value& in)
 {
   std::vector<std::string> result;
-  for (const auto& it : in) {
+  for (auto const& it : in) {
     result.push_back(it.asString());
   }
   return result;
@@ -86,19 +89,17 @@ void getCMakeInputs(const cmGlobalGenerator* gg, const std::string& sourceDir,
 {
   const std::string cmakeRootDir = cmSystemTools::GetCMakeRoot() + '/';
   std::vector<cmMakefile*> const& makefiles = gg->GetMakefiles();
-  for (auto it = makefiles.begin(); it != makefiles.end(); ++it) {
-    const std::vector<std::string> listFiles = (*it)->GetListFiles();
+  for (cmMakefile const* mf : makefiles) {
+    for (std::string const& lf : mf->GetListFiles()) {
 
-    for (auto jt = listFiles.begin(); jt != listFiles.end(); ++jt) {
-
-      const std::string startOfFile = jt->substr(0, cmakeRootDir.size());
+      const std::string startOfFile = lf.substr(0, cmakeRootDir.size());
       const bool isInternal = (startOfFile == cmakeRootDir);
-      const bool isTemporary = !isInternal && (jt->find(buildDir + '/') == 0);
+      const bool isTemporary = !isInternal && (lf.find(buildDir + '/') == 0);
 
-      std::string toAdd = *jt;
+      std::string toAdd = lf;
       if (!sourceDir.empty()) {
         const std::string& relative =
-          cmSystemTools::RelativePath(sourceDir.c_str(), jt->c_str());
+          cmSystemTools::RelativePath(sourceDir.c_str(), lf.c_str());
         if (toAdd.size() > relative.size()) {
           toAdd = relative;
         }
@@ -125,11 +126,13 @@ void getCMakeInputs(const cmGlobalGenerator* gg, const std::string& sourceDir,
 
 } // namespace
 
-cmServerRequest::cmServerRequest(cmServer* server, const std::string& t,
-                                 const std::string& c, const Json::Value& d)
+cmServerRequest::cmServerRequest(cmServer* server, cmConnection* connection,
+                                 const std::string& t, const std::string& c,
+                                 const Json::Value& d)
   : Type(t)
   , Cookie(c)
   , Data(d)
+  , Connection(connection)
   , m_Server(server)
 {
 }
@@ -215,10 +218,10 @@ bool cmServerProtocol::Activate(cmServer* server,
 {
   assert(server);
   this->m_Server = server;
-  this->m_CMakeInstance = std::make_unique<cmake>(cmake::RoleProject);
+  this->m_CMakeInstance = cm::make_unique<cmake>(cmake::RoleProject);
   const bool result = this->DoActivate(request, errorMessage);
   if (!result) {
-    this->m_CMakeInstance = CM_NULLPTR;
+    this->m_CMakeInstance = nullptr;
   }
   return result;
 }
@@ -247,9 +250,9 @@ bool cmServerProtocol::DoActivate(const cmServerRequest& /*request*/,
   return true;
 }
 
-std::pair<int, int> cmServerProtocol1_0::ProtocolVersion() const
+std::pair<int, int> cmServerProtocol1::ProtocolVersion() const
 {
-  return std::make_pair(1, 0);
+  return std::make_pair(1, 1);
 }
 
 static void setErrorMessage(std::string* errorMessage, const std::string& text)
@@ -264,6 +267,10 @@ static bool testHomeDirectory(cmState* state, std::string& value,
 {
   const std::string cachedValue =
     std::string(state->GetCacheEntryValue("CMAKE_HOME_DIRECTORY"));
+  if (value.empty()) {
+    value = cachedValue;
+    return true;
+  }
   const std::string suffix = "/CMakeLists.txt";
   const std::string cachedValueCML = cachedValue + suffix;
   const std::string valueCML = value + suffix;
@@ -274,9 +281,6 @@ static bool testHomeDirectory(cmState* state, std::string& value,
                                 "source directory value."));
     return false;
   }
-  if (value.empty()) {
-    value = cachedValue;
-  }
   return true;
 }
 
@@ -287,20 +291,20 @@ static bool testValue(cmState* state, const std::string& key,
   const char* entry = state->GetCacheEntryValue(key);
   const std::string cachedValue =
     entry == nullptr ? std::string() : std::string(entry);
-  if (!cachedValue.empty() && !value.empty() && cachedValue != value) {
+  if (value.empty()) {
+    value = cachedValue;
+  }
+  if (!cachedValue.empty() && cachedValue != value) {
     setErrorMessage(errorMessage, std::string("\"") + key +
                       "\" is set but incompatible with configured " +
                       keyDescription + " value.");
     return false;
   }
-  if (value.empty()) {
-    value = cachedValue;
-  }
   return true;
 }
 
-bool cmServerProtocol1_0::DoActivate(const cmServerRequest& request,
-                                     std::string* errorMessage)
+bool cmServerProtocol1::DoActivate(const cmServerRequest& request,
+                                   std::string* errorMessage)
 {
   std::string sourceDirectory = request.Data[kSOURCE_DIRECTORY_KEY].asString();
   const std::string buildDirectory =
@@ -419,8 +423,8 @@ bool cmServerProtocol1_0::DoActivate(const cmServerRequest& request,
   return true;
 }
 
-void cmServerProtocol1_0::HandleCMakeFileChanges(const std::string& path,
-                                                 int event, int status)
+void cmServerProtocol1::HandleCMakeFileChanges(const std::string& path,
+                                               int event, int status)
 {
   assert(status == 0);
   static_cast<void>(status);
@@ -443,7 +447,7 @@ void cmServerProtocol1_0::HandleCMakeFileChanges(const std::string& path,
   SendSignal(kFILE_CHANGE_SIGNAL, obj);
 }
 
-const cmServerResponse cmServerProtocol1_0::Process(
+const cmServerResponse cmServerProtocol1::Process(
   const cmServerRequest& request)
 {
   assert(this->m_State >= STATE_ACTIVE);
@@ -476,18 +480,14 @@ const cmServerResponse cmServerProtocol1_0::Process(
   return request.ReportError("Unknown command!");
 }
 
-bool cmServerProtocol1_0::IsExperimental() const
+bool cmServerProtocol1::IsExperimental() const
 {
   return true;
 }
 
-cmServerResponse cmServerProtocol1_0::ProcessCache(
+cmServerResponse cmServerProtocol1::ProcessCache(
   const cmServerRequest& request)
 {
-  if (this->m_State < STATE_CONFIGURED) {
-    return request.ReportError("This project was not configured yet.");
-  }
-
   cmState* state = this->CMakeInstance()->GetState();
 
   Json::Value result = Json::objectValue;
@@ -499,14 +499,14 @@ cmServerResponse cmServerProtocol1_0::ProcessCache(
   if (keys.empty()) {
     keys = allKeys;
   } else {
-    for (const auto& i : keys) {
+    for (auto const& i : keys) {
       if (std::find(allKeys.begin(), allKeys.end(), i) == allKeys.end()) {
         return request.ReportError("Key \"" + i + "\" not found in cache.");
       }
     }
   }
   std::sort(keys.begin(), keys.end());
-  for (const auto& key : keys) {
+  for (auto const& key : keys) {
     Json::Value entry = Json::objectValue;
     entry[kKEY_KEY] = key;
     entry[kTYPE_KEY] =
@@ -515,7 +515,7 @@ cmServerResponse cmServerProtocol1_0::ProcessCache(
 
     Json::Value props = Json::objectValue;
     bool haveProperties = false;
-    for (const auto& prop : state->GetCacheEntryPropertyList(key)) {
+    for (auto const& prop : state->GetCacheEntryPropertyList(key)) {
       haveProperties = true;
       props[prop] = state->GetCacheEntryProperty(key, prop);
     }
@@ -530,7 +530,7 @@ cmServerResponse cmServerProtocol1_0::ProcessCache(
   return request.Reply(result);
 }
 
-cmServerResponse cmServerProtocol1_0::ProcessCMakeInputs(
+cmServerResponse cmServerProtocol1::ProcessCMakeInputs(
   const cmServerRequest& request)
 {
   if (this->m_State < STATE_CONFIGURED) {
@@ -589,7 +589,7 @@ public:
   std::string Language;
   std::string Flags;
   std::vector<std::string> Defines;
-  std::vector<std::pair<std::string, bool> > IncludePathList;
+  std::vector<std::pair<std::string, bool>> IncludePathList;
 };
 
 bool LanguageData::operator==(const LanguageData& other) const
@@ -602,11 +602,12 @@ bool LanguageData::operator==(const LanguageData& other) const
 void LanguageData::SetDefines(const std::set<std::string>& defines)
 {
   std::vector<std::string> result;
-  for (const auto& i : defines) {
+  result.reserve(defines.size());
+  for (std::string const& i : defines) {
     result.push_back(i);
   }
   std::sort(result.begin(), result.end());
-  Defines = result;
+  Defines = std::move(result);
 }
 
 namespace std {
@@ -619,11 +620,11 @@ struct hash<LanguageData>
     using std::hash;
     size_t result =
       hash<std::string>()(in.Language) ^ hash<std::string>()(in.Flags);
-    for (const auto& i : in.IncludePathList) {
+    for (auto const& i : in.IncludePathList) {
       result = result ^ (hash<std::string>()(i.first) ^
                          (i.second ? std::numeric_limits<size_t>::max() : 0));
     }
-    for (const auto& i : in.Defines) {
+    for (auto const& i : in.Defines) {
       result = result ^ hash<std::string>()(i);
     }
     result =
@@ -647,7 +648,7 @@ static Json::Value DumpSourceFileGroup(const LanguageData& data,
     }
     if (!data.IncludePathList.empty()) {
       Json::Value includes = Json::arrayValue;
-      for (const auto& i : data.IncludePathList) {
+      for (auto const& i : data.IncludePathList) {
         Json::Value tmp = Json::objectValue;
         tmp[kPATH_KEY] = i.first;
         if (i.second) {
@@ -665,7 +666,7 @@ static Json::Value DumpSourceFileGroup(const LanguageData& data,
   result[kIS_GENERATED_KEY] = data.IsGenerated;
 
   Json::Value sourcesValue = Json::arrayValue;
-  for (const auto& i : files) {
+  for (auto const& i : files) {
     const std::string relPath =
       cmSystemTools::RelativePath(baseDir.c_str(), i.c_str());
     sourcesValue.append(relPath.size() < i.size() ? relPath : i);
@@ -684,7 +685,7 @@ static Json::Value DumpSourceFilesList(
   std::vector<cmSourceFile*> files;
   target->GetSourceFiles(files, config);
 
-  std::unordered_map<LanguageData, std::vector<std::string> > fileGroups;
+  std::unordered_map<LanguageData, std::vector<std::string>> fileGroups;
   for (cmSourceFile* file : files) {
     LanguageData fileData;
     fileData.Language = file->GetLanguage();
@@ -721,8 +722,8 @@ static Json::Value DumpSourceFilesList(
 
   const std::string baseDir = target->Makefile->GetCurrentSourceDirectory();
   Json::Value result = Json::arrayValue;
-  for (auto it = fileGroups.begin(); it != fileGroups.end(); ++it) {
-    Json::Value group = DumpSourceFileGroup(it->first, it->second, baseDir);
+  for (auto const& it : fileGroups) {
+    Json::Value group = DumpSourceFileGroup(it.first, it.second, baseDir);
     if (!group.isNull()) {
       result.append(group);
     }
@@ -731,6 +732,37 @@ static Json::Value DumpSourceFilesList(
   return result;
 }
 
+static Json::Value DumpBacktrace(const cmListFileBacktrace& backtrace)
+{
+  Json::Value result = Json::arrayValue;
+
+  cmListFileBacktrace backtraceCopy = backtrace;
+  while (!backtraceCopy.Top().FilePath.empty()) {
+    Json::Value entry = Json::objectValue;
+    entry[kPATH_KEY] = backtraceCopy.Top().FilePath;
+    if (backtraceCopy.Top().Line) {
+      entry[kLINE_NUMBER_KEY] = static_cast<int>(backtraceCopy.Top().Line);
+    }
+    if (!backtraceCopy.Top().Name.empty()) {
+      entry[kNAME_KEY] = backtraceCopy.Top().Name;
+    }
+    result.append(entry);
+    backtraceCopy = backtraceCopy.Pop();
+  }
+  return result;
+}
+
+static void DumpBacktraceRange(Json::Value& result, const std::string& type,
+                               cmBacktraceRange range)
+{
+  for (auto const& bt : range) {
+    Json::Value obj = Json::objectValue;
+    obj[kTYPE_KEY] = type;
+    obj[kBACKTRACE_KEY] = DumpBacktrace(bt);
+    result.append(obj);
+  }
+}
+
 static Json::Value DumpTarget(cmGeneratorTarget* target,
                               const std::string& config)
 {
@@ -765,6 +797,22 @@ static Json::Value DumpTarget(cmGeneratorTarget* target,
 
   result[kFULL_NAME_KEY] = target->GetFullName(config);
 
+  Json::Value crossRefs = Json::objectValue;
+  crossRefs[kBACKTRACE_KEY] = DumpBacktrace(target->Target->GetBacktrace());
+
+  Json::Value statements = Json::arrayValue;
+  DumpBacktraceRange(statements, "target_compile_definitions",
+                     target->Target->GetCompileDefinitionsBacktraces());
+  DumpBacktraceRange(statements, "target_include_directories",
+                     target->Target->GetIncludeDirectoriesBacktraces());
+  DumpBacktraceRange(statements, "target_compile_options",
+                     target->Target->GetCompileOptionsBacktraces());
+  DumpBacktraceRange(statements, "target_link_libraries",
+                     target->Target->GetLinkImplementationBacktraces());
+
+  crossRefs[kRELATED_STATEMENTS_KEY] = std::move(statements);
+  result[kTARGET_CROSS_REFERENCES_KEY] = std::move(crossRefs);
+
   if (target->HaveWellDefinedOutputFiles()) {
     Json::Value artifacts = Json::arrayValue;
     artifacts.append(
@@ -823,7 +871,7 @@ static Json::Value DumpTarget(cmGeneratorTarget* target,
   std::set<std::string> languages;
   target->GetLanguages(languages, config);
   std::map<std::string, LanguageData> languageDataMap;
-  for (const auto& lang : languages) {
+  for (std::string const& lang : languages) {
     LanguageData& ld = languageDataMap[lang];
     ld.Language = lang;
     lg->GetTargetCompileFlags(target, config, lang, ld.Flags);
@@ -832,7 +880,7 @@ static Json::Value DumpTarget(cmGeneratorTarget* target,
     ld.SetDefines(defines);
     std::vector<std::string> includePathList;
     lg->GetIncludeDirectories(includePathList, target, lang, config, true);
-    for (auto i : includePathList) {
+    for (std::string const& i : includePathList) {
       ld.IncludePathList.push_back(
         std::make_pair(i, target->IsSystemIncludeDirectory(i, config)));
     }
@@ -853,8 +901,8 @@ static Json::Value DumpTargetsList(
   Json::Value result = Json::arrayValue;
 
   std::vector<cmGeneratorTarget*> targetList;
-  for (const auto& lgIt : generators) {
-    auto list = lgIt->GetGeneratorTargets();
+  for (auto const& lgIt : generators) {
+    const auto& list = lgIt->GetGeneratorTargets();
     targetList.insert(targetList.end(), list.begin(), list.end());
   }
   std::sort(targetList.begin(), targetList.end());
@@ -875,7 +923,7 @@ static Json::Value DumpProjectList(const cmake* cm, std::string const& config)
 
   auto globalGen = cm->GetGlobalGenerator();
 
-  for (const auto& projectIt : globalGen->GetProjectMap()) {
+  for (auto const& projectIt : globalGen->GetProjectMap()) {
     Json::Value pObj = Json::objectValue;
     pObj[kNAME_KEY] = projectIt.first;
 
@@ -910,14 +958,14 @@ static Json::Value DumpConfigurationsList(const cmake* cm)
 {
   Json::Value result = Json::arrayValue;
 
-  for (const std::string& c : getConfigurations(cm)) {
+  for (std::string const& c : getConfigurations(cm)) {
     result.append(DumpConfiguration(cm, c));
   }
 
   return result;
 }
 
-cmServerResponse cmServerProtocol1_0::ProcessCodeModel(
+cmServerResponse cmServerProtocol1::ProcessCodeModel(
   const cmServerRequest& request)
 {
   if (this->m_State != STATE_COMPUTED) {
@@ -929,7 +977,7 @@ cmServerResponse cmServerProtocol1_0::ProcessCodeModel(
   return request.Reply(result);
 }
 
-cmServerResponse cmServerProtocol1_0::ProcessCompute(
+cmServerResponse cmServerProtocol1::ProcessCompute(
   const cmServerRequest& request)
 {
   if (this->m_State > STATE_CONFIGURED) {
@@ -949,7 +997,7 @@ cmServerResponse cmServerProtocol1_0::ProcessCompute(
   return request.Reply(Json::Value());
 }
 
-cmServerResponse cmServerProtocol1_0::ProcessConfigure(
+cmServerResponse cmServerProtocol1::ProcessConfigure(
   const cmServerRequest& request)
 {
   if (this->m_State == STATE_INACTIVE) {
@@ -973,12 +1021,12 @@ cmServerResponse cmServerProtocol1_0::ProcessConfigure(
     if (passedArgs.isString()) {
       cacheArgs.push_back(passedArgs.asString());
     } else if (passedArgs.isArray()) {
-      for (auto i = passedArgs.begin(); i != passedArgs.end(); ++i) {
-        if (!i->isString()) {
+      for (auto const& arg : passedArgs) {
+        if (!arg.isString()) {
           cacheArgumentsError = true;
           break;
         }
-        cacheArgs.push_back(i->asString());
+        cacheArgs.push_back(arg.asString());
       }
     } else {
       cacheArgumentsError = true;
@@ -1055,7 +1103,7 @@ cmServerResponse cmServerProtocol1_0::ProcessConfigure(
   return request.Reply(Json::Value());
 }
 
-cmServerResponse cmServerProtocol1_0::ProcessGlobalSettings(
+cmServerResponse cmServerProtocol1::ProcessGlobalSettings(
   const cmServerRequest& request)
 {
   cmake* cm = this->CMakeInstance();
@@ -1091,7 +1139,7 @@ static void setBool(const cmServerRequest& request, const std::string& key,
   setter(request.Data[key].asBool());
 }
 
-cmServerResponse cmServerProtocol1_0::ProcessSetGlobalSettings(
+cmServerResponse cmServerProtocol1::ProcessSetGlobalSettings(
   const cmServerRequest& request)
 {
   const std::vector<std::string> boolValues = {
@@ -1099,7 +1147,7 @@ cmServerResponse cmServerProtocol1_0::ProcessSetGlobalSettings(
     kWARN_UNINITIALIZED_KEY, kWARN_UNUSED_KEY, kWARN_UNUSED_CLI_KEY,
     kCHECK_SYSTEM_VARS_KEY
   };
-  for (const auto& i : boolValues) {
+  for (std::string const& i : boolValues) {
     if (!request.Data[i].isNull() && !request.Data[i].isBool()) {
       return request.ReportError("\"" + i +
                                  "\" must be unset or a bool value.");
@@ -1123,17 +1171,17 @@ cmServerResponse cmServerProtocol1_0::ProcessSetGlobalSettings(
   return request.Reply(Json::Value());
 }
 
-cmServerResponse cmServerProtocol1_0::ProcessFileSystemWatchers(
+cmServerResponse cmServerProtocol1::ProcessFileSystemWatchers(
   const cmServerRequest& request)
 {
   const cmFileMonitor* const fm = FileMonitor();
   Json::Value result = Json::objectValue;
   Json::Value files = Json::arrayValue;
-  for (const auto& f : fm->WatchedFiles()) {
+  for (auto const& f : fm->WatchedFiles()) {
     files.append(f);
   }
   Json::Value directories = Json::arrayValue;
-  for (const auto& d : fm->WatchedDirectories()) {
+  for (auto const& d : fm->WatchedDirectories()) {
     directories.append(d);
   }
   result[kWATCHED_FILES_KEY] = files;
@@ -1142,7 +1190,7 @@ cmServerResponse cmServerProtocol1_0::ProcessFileSystemWatchers(
   return request.Reply(result);
 }
 
-cmServerProtocol1_0::GeneratorInformation::GeneratorInformation(
+cmServerProtocol1::GeneratorInformation::GeneratorInformation(
   const std::string& generatorName, const std::string& extraGeneratorName,
   const std::string& toolset, const std::string& platform,
   const std::string& sourceDirectory, const std::string& buildDirectory)
@@ -1155,7 +1203,7 @@ cmServerProtocol1_0::GeneratorInformation::GeneratorInformation(
 {
 }
 
-void cmServerProtocol1_0::GeneratorInformation::SetupGenerator(
+void cmServerProtocol1::GeneratorInformation::SetupGenerator(
   cmake* cm, std::string* errorMessage)
 {
   const std::string fullGeneratorName =
diff --git a/Source/cmServerProtocol.h b/Source/cmServerProtocol.h
index 83b3d58de..124ac7f67 100644
--- a/Source/cmServerProtocol.h
+++ b/Source/cmServerProtocol.h
@@ -2,7 +2,7 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #pragma once
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cm_jsoncpp_value.h"
 #include "cmake.h"
@@ -11,6 +11,7 @@
 #include <string>
 #include <utility>
 
+class cmConnection;
 class cmFileMonitor;
 class cmServer;
 class cmServerRequest;
@@ -52,9 +53,11 @@ public:
   const std::string Type;
   const std::string Cookie;
   const Json::Value Data;
+  cmConnection* Connection;
 
 private:
-  cmServerRequest(cmServer* server, const std::string& t, const std::string& c,
+  cmServerRequest(cmServer* server, cmConnection* connection,
+                  const std::string& t, const std::string& c,
                   const Json::Value& d);
 
   void ReportProgress(int min, int current, int max,
@@ -98,7 +101,7 @@ private:
   friend class cmServer;
 };
 
-class cmServerProtocol1_0 : public cmServerProtocol
+class cmServerProtocol1 : public cmServerProtocol
 {
 public:
   std::pair<int, int> ProtocolVersion() const override;
diff --git a/Source/cmSetCommand.cxx b/Source/cmSetCommand.cxx
index 820e7f695..b32cda3cd 100644
--- a/Source/cmSetCommand.cxx
+++ b/Source/cmSetCommand.cxx
@@ -61,7 +61,7 @@ bool cmSetCommand::InitialPass(std::vector<std::string> const& args,
   // SET (VAR PARENT_SCOPE) // Removes the definition of VAR
   // in the parent scope.
   if (args.size() == 2 && args[args.size() - 1] == "PARENT_SCOPE") {
-    this->Makefile->RaiseScope(variable, CM_NULLPTR);
+    this->Makefile->RaiseScope(variable, nullptr);
     return true;
   }
 
@@ -75,8 +75,8 @@ bool cmSetCommand::InitialPass(std::vector<std::string> const& args,
   bool force = false; // optional
   bool parentScope = false;
   cmStateEnums::CacheEntryType type =
-    cmStateEnums::STRING;             // required if cache
-  const char* docstring = CM_NULLPTR; // required if cache
+    cmStateEnums::STRING;          // required if cache
+  const char* docstring = nullptr; // required if cache
 
   unsigned int ignoreLastArgs = 0;
   // look for PARENT_SCOPE argument
diff --git a/Source/cmSetCommand.h b/Source/cmSetCommand.h
index c0858b15b..76e3eae9b 100644
--- a/Source/cmSetCommand.h
+++ b/Source/cmSetCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmSetCommand_h
 #define cmSetCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmSetCommand; }
+  cmCommand* Clone() override { return new cmSetCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmSetDirectoryPropertiesCommand.h b/Source/cmSetDirectoryPropertiesCommand.h
index 8832b3389..473347c1a 100644
--- a/Source/cmSetDirectoryPropertiesCommand.h
+++ b/Source/cmSetDirectoryPropertiesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmSetDirectoryPropertiesCommand_h
 #define cmSetDirectoryPropertiesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -16,17 +16,14 @@ class cmMakefile;
 class cmSetDirectoryPropertiesCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE
-  {
-    return new cmSetDirectoryPropertiesCommand;
-  }
+  cmCommand* Clone() override { return new cmSetDirectoryPropertiesCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the input file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   /**
    * Static entry point for use by other commands
diff --git a/Source/cmSetPropertyCommand.cxx b/Source/cmSetPropertyCommand.cxx
index b57f62a50..7efcc0403 100644
--- a/Source/cmSetPropertyCommand.cxx
+++ b/Source/cmSetPropertyCommand.cxx
@@ -141,7 +141,7 @@ bool cmSetPropertyCommand::HandleGlobalMode()
   std::string const& name = this->PropertyName;
   const char* value = this->PropertyValue.c_str();
   if (this->Remove) {
-    value = CM_NULLPTR;
+    value = nullptr;
   }
   if (this->AppendMode) {
     cm->AppendProperty(name, value ? value : "", this->AppendAsString);
@@ -191,7 +191,7 @@ bool cmSetPropertyCommand::HandleDirectoryMode()
   std::string const& name = this->PropertyName;
   const char* value = this->PropertyValue.c_str();
   if (this->Remove) {
-    value = CM_NULLPTR;
+    value = nullptr;
   }
   if (this->AppendMode) {
     mf->AppendProperty(name, value ? value : "", this->AppendAsString);
@@ -204,20 +204,19 @@ bool cmSetPropertyCommand::HandleDirectoryMode()
 
 bool cmSetPropertyCommand::HandleTargetMode()
 {
-  for (std::set<std::string>::const_iterator ni = this->Names.begin();
-       ni != this->Names.end(); ++ni) {
-    if (this->Makefile->IsAlias(*ni)) {
+  for (std::string const& name : this->Names) {
+    if (this->Makefile->IsAlias(name)) {
       this->SetError("can not be used on an ALIAS target.");
       return false;
     }
-    if (cmTarget* target = this->Makefile->FindTargetToUse(*ni)) {
+    if (cmTarget* target = this->Makefile->FindTargetToUse(name)) {
       // Handle the current target.
       if (!this->HandleTarget(target)) {
         return false;
       }
     } else {
       std::ostringstream e;
-      e << "could not find TARGET " << *ni
+      e << "could not find TARGET " << name
         << ".  Perhaps it has not yet been created.";
       this->SetError(e.str());
       return false;
@@ -232,7 +231,7 @@ bool cmSetPropertyCommand::HandleTarget(cmTarget* target)
   std::string const& name = this->PropertyName;
   const char* value = this->PropertyValue.c_str();
   if (this->Remove) {
-    value = CM_NULLPTR;
+    value = nullptr;
   }
   if (this->AppendMode) {
     target->AppendProperty(name, value, this->AppendAsString);
@@ -248,16 +247,15 @@ bool cmSetPropertyCommand::HandleTarget(cmTarget* target)
 
 bool cmSetPropertyCommand::HandleSourceMode()
 {
-  for (std::set<std::string>::const_iterator ni = this->Names.begin();
-       ni != this->Names.end(); ++ni) {
+  for (std::string const& name : this->Names) {
     // Get the source file.
-    if (cmSourceFile* sf = this->Makefile->GetOrCreateSource(*ni)) {
+    if (cmSourceFile* sf = this->Makefile->GetOrCreateSource(name)) {
       if (!this->HandleSource(sf)) {
         return false;
       }
     } else {
       std::ostringstream e;
-      e << "given SOURCE name that could not be found or created: " << *ni;
+      e << "given SOURCE name that could not be found or created: " << name;
       this->SetError(e.str());
       return false;
     }
@@ -271,7 +269,7 @@ bool cmSetPropertyCommand::HandleSource(cmSourceFile* sf)
   std::string const& name = this->PropertyName;
   const char* value = this->PropertyValue.c_str();
   if (this->Remove) {
-    value = CM_NULLPTR;
+    value = nullptr;
   }
 
   if (this->AppendMode) {
@@ -303,9 +301,8 @@ bool cmSetPropertyCommand::HandleTestMode()
   if (!this->Names.empty()) {
     std::ostringstream e;
     e << "given TEST names that do not exist:\n";
-    for (std::set<std::string>::const_iterator ni = this->Names.begin();
-         ni != this->Names.end(); ++ni) {
-      e << "  " << *ni << "\n";
+    for (std::string const& name : this->Names) {
+      e << "  " << name << "\n";
     }
     this->SetError(e.str());
     return false;
@@ -319,7 +316,7 @@ bool cmSetPropertyCommand::HandleTest(cmTest* test)
   std::string const& name = this->PropertyName;
   const char* value = this->PropertyValue.c_str();
   if (this->Remove) {
-    value = CM_NULLPTR;
+    value = nullptr;
   }
   if (this->AppendMode) {
     test->AppendProperty(name, value, this->AppendAsString);
@@ -359,19 +356,18 @@ bool cmSetPropertyCommand::HandleCacheMode()
     return false;
   }
 
-  for (std::set<std::string>::const_iterator ni = this->Names.begin();
-       ni != this->Names.end(); ++ni) {
+  for (std::string const& name : this->Names) {
     // Get the source file.
     cmMakefile* mf = this->GetMakefile();
     cmake* cm = mf->GetCMakeInstance();
-    const char* existingValue = cm->GetState()->GetCacheEntryValue(*ni);
+    const char* existingValue = cm->GetState()->GetCacheEntryValue(name);
     if (existingValue) {
-      if (!this->HandleCacheEntry(*ni)) {
+      if (!this->HandleCacheEntry(name)) {
         return false;
       }
     } else {
       std::ostringstream e;
-      e << "could not find CACHE variable " << *ni
+      e << "could not find CACHE variable " << name
         << ".  Perhaps it has not yet been created.";
       this->SetError(e.str());
       return false;
@@ -403,16 +399,15 @@ bool cmSetPropertyCommand::HandleInstallMode()
 {
   cmake* cm = this->Makefile->GetCMakeInstance();
 
-  for (std::set<std::string>::const_iterator i = this->Names.begin();
-       i != this->Names.end(); ++i) {
+  for (std::string const& name : this->Names) {
     if (cmInstalledFile* file =
-          cm->GetOrCreateInstalledFile(this->Makefile, *i)) {
+          cm->GetOrCreateInstalledFile(this->Makefile, name)) {
       if (!this->HandleInstall(file)) {
         return false;
       }
     } else {
       std::ostringstream e;
-      e << "given INSTALL name that could not be found or created: " << *i;
+      e << "given INSTALL name that could not be found or created: " << name;
       this->SetError(e.str());
       return false;
     }
diff --git a/Source/cmSetPropertyCommand.h b/Source/cmSetPropertyCommand.h
index 08158244a..f1126bb7e 100644
--- a/Source/cmSetPropertyCommand.h
+++ b/Source/cmSetPropertyCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmSetsPropertiesCommand_h
 #define cmSetsPropertiesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <set>
 #include <string>
@@ -22,14 +22,14 @@ class cmSetPropertyCommand : public cmCommand
 public:
   cmSetPropertyCommand();
 
-  cmCommand* Clone() CM_OVERRIDE { return new cmSetPropertyCommand; }
+  cmCommand* Clone() override { return new cmSetPropertyCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the input file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   std::set<std::string> Names;
diff --git a/Source/cmSetSourceFilesPropertiesCommand.h b/Source/cmSetSourceFilesPropertiesCommand.h
index 2e22dc9ef..afb19f6e6 100644
--- a/Source/cmSetSourceFilesPropertiesCommand.h
+++ b/Source/cmSetSourceFilesPropertiesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmSetSourceFilesPropertiesCommand_h
 #define cmSetSourceFilesPropertiesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -16,17 +16,14 @@ class cmMakefile;
 class cmSetSourceFilesPropertiesCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE
-  {
-    return new cmSetSourceFilesPropertiesCommand;
-  }
+  cmCommand* Clone() override { return new cmSetSourceFilesPropertiesCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the input file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   static bool RunCommand(cmMakefile* mf,
                          std::vector<std::string>::const_iterator filebeg,
diff --git a/Source/cmSetTargetPropertiesCommand.h b/Source/cmSetTargetPropertiesCommand.h
index 425618157..c9755da91 100644
--- a/Source/cmSetTargetPropertiesCommand.h
+++ b/Source/cmSetTargetPropertiesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmSetTargetsPropertiesCommand_h
 #define cmSetTargetsPropertiesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -16,14 +16,14 @@ class cmMakefile;
 class cmSetTargetPropertiesCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmSetTargetPropertiesCommand; }
+  cmCommand* Clone() override { return new cmSetTargetPropertiesCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the input file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   /**
    *  Used by this command and cmSetPropertiesCommand
diff --git a/Source/cmSetTestsPropertiesCommand.h b/Source/cmSetTestsPropertiesCommand.h
index 90f004c34..84b2645b3 100644
--- a/Source/cmSetTestsPropertiesCommand.h
+++ b/Source/cmSetTestsPropertiesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmSetTestsPropertiesCommand_h
 #define cmSetTestsPropertiesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -16,14 +16,14 @@ class cmMakefile;
 class cmSetTestsPropertiesCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmSetTestsPropertiesCommand; }
+  cmCommand* Clone() override { return new cmSetTestsPropertiesCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the input file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   static bool SetOneTest(const std::string& tname,
                          std::vector<std::string>& propertyPairs,
diff --git a/Source/cmSiteNameCommand.cxx b/Source/cmSiteNameCommand.cxx
index 7eace268f..d2e83a6aa 100644
--- a/Source/cmSiteNameCommand.cxx
+++ b/Source/cmSiteNameCommand.cxx
@@ -52,8 +52,8 @@ bool cmSiteNameCommand::InitialPass(std::vector<std::string> const& args,
   // try to find the hostname for this computer
   if (!cmSystemTools::IsOff(hostname_cmd.c_str())) {
     std::string host;
-    cmSystemTools::RunSingleCommand(hostname_cmd.c_str(), &host, CM_NULLPTR,
-                                    CM_NULLPTR, CM_NULLPTR,
+    cmSystemTools::RunSingleCommand(hostname_cmd.c_str(), &host, nullptr,
+                                    nullptr, nullptr,
                                     cmSystemTools::OUTPUT_NONE);
 
     // got the hostname
diff --git a/Source/cmSiteNameCommand.h b/Source/cmSiteNameCommand.h
index 6c65480ed..2d8dc1768 100644
--- a/Source/cmSiteNameCommand.h
+++ b/Source/cmSiteNameCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmSiteNameCommand_h
 #define cmSiteNameCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmSiteNameCommand; }
+  cmCommand* Clone() override { return new cmSiteNameCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmSourceFile.cxx b/Source/cmSourceFile.cxx
index 5c4f18b40..0964bea6b 100644
--- a/Source/cmSourceFile.cxx
+++ b/Source/cmSourceFile.cxx
@@ -15,15 +15,13 @@
 cmSourceFile::cmSourceFile(cmMakefile* mf, const std::string& name)
   : Location(mf, name)
 {
-  this->CustomCommand = CM_NULLPTR;
+  this->CustomCommand = nullptr;
   this->FindFullPathFailed = false;
-  this->IsUiFile = (".ui" == cmSystemTools::GetFilenameLastExtension(
-                               this->Location.GetName()));
 }
 
 cmSourceFile::~cmSourceFile()
 {
-  this->SetCustomCommand(CM_NULLPTR);
+  this->SetCustomCommand(nullptr);
 }
 
 std::string const& cmSourceFile::GetExtension() const
@@ -131,17 +129,17 @@ bool cmSourceFile::FindFullPath(std::string* error)
 
   // The file is not generated.  It must exist on disk.
   cmMakefile const* mf = this->Location.GetMakefile();
-  const char* tryDirs[3] = { CM_NULLPTR, CM_NULLPTR, CM_NULLPTR };
+  const char* tryDirs[3] = { nullptr, nullptr, nullptr };
   if (this->Location.DirectoryIsAmbiguous()) {
     tryDirs[0] = mf->GetCurrentSourceDirectory();
     tryDirs[1] = mf->GetCurrentBinaryDirectory();
   } else {
     tryDirs[0] = "";
   }
-  const std::vector<std::string>& srcExts =
-    mf->GetCMakeInstance()->GetSourceExtensions();
-  std::vector<std::string> hdrExts =
-    mf->GetCMakeInstance()->GetHeaderExtensions();
+
+  cmake const* const cmakeInst = mf->GetCMakeInstance();
+  std::vector<std::string> const& srcExts = cmakeInst->GetSourceExtensions();
+  std::vector<std::string> const& hdrExts = cmakeInst->GetHeaderExtensions();
   for (const char* const* di = tryDirs; *di; ++di) {
     std::string tryPath = this->Location.GetDirectory();
     if (!tryPath.empty()) {
@@ -152,15 +150,13 @@ bool cmSourceFile::FindFullPath(std::string* error)
     if (this->TryFullPath(tryPath, "")) {
       return true;
     }
-    for (std::vector<std::string>::const_iterator ei = srcExts.begin();
-         ei != srcExts.end(); ++ei) {
-      if (this->TryFullPath(tryPath, *ei)) {
+    for (std::string const& ext : srcExts) {
+      if (this->TryFullPath(tryPath, ext)) {
         return true;
       }
     }
-    for (std::vector<std::string>::const_iterator ei = hdrExts.begin();
-         ei != hdrExts.end(); ++ei) {
-      if (this->TryFullPath(tryPath, *ei)) {
+    for (std::string const& ext : hdrExts) {
+      if (this->TryFullPath(tryPath, ext)) {
         return true;
       }
     }
@@ -173,13 +169,11 @@ bool cmSourceFile::FindFullPath(std::string* error)
   }
   missing += this->Location.GetName();
   e << "Cannot find source file:\n  " << missing << "\nTried extensions";
-  for (std::vector<std::string>::const_iterator ext = srcExts.begin();
-       ext != srcExts.end(); ++ext) {
-    e << " ." << *ext;
+  for (std::string const& srcExt : srcExts) {
+    e << " ." << srcExt;
   }
-  for (std::vector<std::string>::const_iterator ext = hdrExts.begin();
-       ext != hdrExts.end(); ++ext) {
-    e << " ." << *ext;
+  for (std::string const& ext : hdrExts) {
+    e << " ." << ext;
   }
   if (error) {
     *error = e.str();
@@ -245,13 +239,6 @@ bool cmSourceFile::Matches(cmSourceFileLocation const& loc)
 void cmSourceFile::SetProperty(const std::string& prop, const char* value)
 {
   this->Properties.SetProperty(prop, value);
-
-  if (this->IsUiFile) {
-    cmMakefile const* mf = this->Location.GetMakefile();
-    if (prop == "AUTOUIC_OPTIONS") {
-      const_cast<cmMakefile*>(mf)->AddQtUiFileWithOptions(this);
-    }
-  }
 }
 
 void cmSourceFile::AppendProperty(const std::string& prop, const char* value,
@@ -290,7 +277,7 @@ const char* cmSourceFile::GetProperty(const std::string& prop) const
   // Check for computed properties.
   if (prop == "LOCATION") {
     if (this->FullPath.empty()) {
-      return CM_NULLPTR;
+      return nullptr;
     }
     return this->FullPath.c_str();
   }
diff --git a/Source/cmSourceFile.h b/Source/cmSourceFile.h
index 0be659c5f..c2105d224 100644
--- a/Source/cmSourceFile.h
+++ b/Source/cmSourceFile.h
@@ -3,7 +3,7 @@
 #ifndef cmSourceFile_h
 #define cmSourceFile_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmPropertyMap.h"
 #include "cmSourceFileLocation.h"
@@ -57,7 +57,7 @@ public:
    * horrible interface, but is necessary for backwards
    * compatibility).
    */
-  std::string const& GetFullPath(std::string* error = CM_NULLPTR);
+  std::string const& GetFullPath(std::string* error = nullptr);
   std::string const& GetFullPath() const;
 
   /**
@@ -107,7 +107,6 @@ private:
   std::string ObjectLibrary;
   std::vector<std::string> Depends;
   bool FindFullPathFailed;
-  bool IsUiFile;
 
   bool FindFullPath(std::string* error);
   bool TryFullPath(const std::string& path, const std::string& ext);
@@ -120,4 +119,10 @@ private:
 // TODO: Factor out into platform information modules.
 #define CM_HEADER_REGEX "\\.(h|hh|h\\+\\+|hm|hpp|hxx|in|txx|inl)$"
 
+#define CM_SOURCE_REGEX                                                       \
+  "\\.(C|M|c|c\\+\\+|cc|cpp|cxx|f|f90|for|fpp|ftn|m|mm|rc|def|r|odl|idl|hpj"  \
+  "|bat)$"
+
+#define CM_RESOURCE_REGEX "\\.(pdf|plist|png|jpeg|jpg|storyboard|xcassets)$"
+
 #endif
diff --git a/Source/cmSourceFileLocation.cxx b/Source/cmSourceFileLocation.cxx
index 86711d784..4f337f246 100644
--- a/Source/cmSourceFileLocation.cxx
+++ b/Source/cmSourceFileLocation.cxx
@@ -2,8 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmSourceFileLocation.h"
 
-#include "cmConfigure.h"
-
 #include "cmAlgorithms.h"
 #include "cmGlobalGenerator.h"
 #include "cmMakefile.h"
@@ -15,7 +13,7 @@
 #include <vector>
 
 cmSourceFileLocation::cmSourceFileLocation()
-  : Makefile(CM_NULLPTR)
+  : Makefile(nullptr)
   , AmbiguousDirectory(true)
   , AmbiguousExtension(true)
 {
@@ -30,21 +28,6 @@ cmSourceFileLocation::cmSourceFileLocation(const cmSourceFileLocation& loc)
   this->Name = loc.Name;
 }
 
-cmSourceFileLocation& cmSourceFileLocation::operator=(
-  const cmSourceFileLocation& loc)
-{
-  if (this == &loc) {
-    return *this;
-  }
-  this->Makefile = loc.Makefile;
-  this->AmbiguousDirectory = loc.AmbiguousDirectory;
-  this->AmbiguousExtension = loc.AmbiguousExtension;
-  this->Directory = loc.Directory;
-  this->Name = loc.Name;
-  this->UpdateExtension(this->Name);
-  return *this;
-}
-
 cmSourceFileLocation::cmSourceFileLocation(cmMakefile const* mf,
                                            const std::string& name)
   : Makefile(mf)
diff --git a/Source/cmSourceFileLocation.h b/Source/cmSourceFileLocation.h
index 6dbc2daed..467682db9 100644
--- a/Source/cmSourceFileLocation.h
+++ b/Source/cmSourceFileLocation.h
@@ -29,7 +29,6 @@ public:
   cmSourceFileLocation(cmMakefile const* mf, const std::string& name);
   cmSourceFileLocation();
   cmSourceFileLocation(const cmSourceFileLocation& loc);
-  cmSourceFileLocation& operator=(const cmSourceFileLocation& loc);
 
   /**
    * Return whether the given source file location could refers to the
@@ -79,7 +78,7 @@ public:
    */
   cmMakefile const* GetMakefile() const { return this->Makefile; }
 private:
-  cmMakefile const* Makefile;
+  cmMakefile const* const Makefile;
   bool AmbiguousDirectory;
   bool AmbiguousExtension;
   std::string Directory;
@@ -90,6 +89,8 @@ private:
   // Update the location with additional knowledge.
   void Update(cmSourceFileLocation const& loc);
   void UpdateExtension(const std::string& name);
+
+  cmSourceFileLocation& operator=(const cmSourceFileLocation& loc) = delete;
 };
 
 #endif
diff --git a/Source/cmSourceGroup.cxx b/Source/cmSourceGroup.cxx
index 104e959a9..fba4c31d3 100644
--- a/Source/cmSourceGroup.cxx
+++ b/Source/cmSourceGroup.cxx
@@ -114,7 +114,7 @@ cmSourceGroup* cmSourceGroup::LookupChild(const char* name) const
   }
 
   // if no child with this name was found return NULL
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmSourceGroup* cmSourceGroup::MatchChildrenFiles(const char* name)
@@ -134,7 +134,7 @@ cmSourceGroup* cmSourceGroup::MatchChildrenFiles(const char* name)
       return result;
     }
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 cmSourceGroup* cmSourceGroup::MatchChildrenRegex(const char* name)
@@ -155,7 +155,7 @@ cmSourceGroup* cmSourceGroup::MatchChildrenRegex(const char* name)
     return this;
   }
 
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 std::vector<cmSourceGroup> const& cmSourceGroup::GetGroupChildren() const
diff --git a/Source/cmSourceGroup.h b/Source/cmSourceGroup.h
index 97affed6e..e8bd69767 100644
--- a/Source/cmSourceGroup.h
+++ b/Source/cmSourceGroup.h
@@ -3,7 +3,7 @@
 #ifndef cmSourceGroup_h
 #define cmSourceGroup_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmsys/RegularExpression.hxx"
 #include <set>
@@ -27,7 +27,7 @@ class cmSourceGroup
 {
 public:
   cmSourceGroup(const char* name, const char* regex,
-                const char* parentName = CM_NULLPTR);
+                const char* parentName = nullptr);
   cmSourceGroup(cmSourceGroup const& r);
   ~cmSourceGroup();
   cmSourceGroup& operator=(cmSourceGroup const&);
diff --git a/Source/cmSourceGroupCommand.cxx b/Source/cmSourceGroupCommand.cxx
index a966300c0..69983a875 100644
--- a/Source/cmSourceGroupCommand.cxx
+++ b/Source/cmSourceGroupCommand.cxx
@@ -41,8 +41,8 @@ std::set<std::string> getSourceGroupFilesPaths(
   std::set<std::string> ret;
   const std::string::size_type rootLength = root.length();
 
-  for (size_t i = 0; i < files.size(); ++i) {
-    ret.insert(files[i].substr(rootLength + 1)); // +1 to also omnit last '/'
+  for (std::string const& file : files) {
+    ret.insert(file.substr(rootLength + 1)); // +1 to also omnit last '/'
   }
 
   return ret;
@@ -51,9 +51,9 @@ std::set<std::string> getSourceGroupFilesPaths(
 bool rootIsPrefix(const std::string& root,
                   const std::vector<std::string>& files, std::string& error)
 {
-  for (size_t i = 0; i < files.size(); ++i) {
-    if (!cmSystemTools::StringStartsWith(files[i], root.c_str())) {
-      error = "ROOT: " + root + " is not a prefix of file: " + files[i];
+  for (std::string const& file : files) {
+    if (!cmSystemTools::StringStartsWith(file, root.c_str())) {
+      error = "ROOT: " + root + " is not a prefix of file: " + file;
       return false;
     }
   }
@@ -61,23 +61,6 @@ bool rootIsPrefix(const std::string& root,
   return true;
 }
 
-cmSourceGroup* addSourceGroup(const std::vector<std::string>& tokenizedPath,
-                              cmMakefile& makefile)
-{
-  cmSourceGroup* sg;
-
-  sg = makefile.GetSourceGroup(tokenizedPath);
-  if (!sg) {
-    makefile.AddSourceGroup(tokenizedPath);
-    sg = makefile.GetSourceGroup(tokenizedPath);
-    if (!sg) {
-      return CM_NULLPTR;
-    }
-  }
-
-  return sg;
-}
-
 std::string prepareFilePathForTree(const std::string& path,
                                    const std::string& currentSourceDir)
 {
@@ -108,26 +91,25 @@ bool addFilesToItsSourceGroups(const std::string& root,
 {
   cmSourceGroup* sg;
 
-  for (std::set<std::string>::const_iterator it = sgFilesPaths.begin();
-       it != sgFilesPaths.end(); ++it) {
+  for (std::string const& sgFilesPath : sgFilesPaths) {
 
     std::vector<std::string> tokenizedPath;
     if (!prefix.empty()) {
-      tokenizedPath = tokenizePath(prefix + '/' + *it);
+      tokenizedPath = tokenizePath(prefix + '/' + sgFilesPath);
     } else {
-      tokenizedPath = tokenizePath(*it);
+      tokenizedPath = tokenizePath(sgFilesPath);
     }
 
     if (tokenizedPath.size() > 1) {
       tokenizedPath.pop_back();
 
-      sg = addSourceGroup(tokenizedPath, makefile);
+      sg = makefile.GetOrCreateSourceGroup(tokenizedPath);
 
       if (!sg) {
-        errorMsg = "Could not create source group for file: " + *it;
+        errorMsg = "Could not create source group for file: " + sgFilesPath;
         return false;
       }
-      const std::string fullPath = getFullFilePath(root, *it);
+      const std::string fullPath = getFullFilePath(root, sgFilesPath);
       sg->AddGroupFile(fullPath);
     }
   }
@@ -158,20 +140,7 @@ bool cmSourceGroupCommand::InitialPass(std::vector<std::string> const& args,
     return true;
   }
 
-  std::string delimiter = "\\";
-  if (this->Makefile->GetDefinition("SOURCE_GROUP_DELIMITER")) {
-    delimiter = this->Makefile->GetDefinition("SOURCE_GROUP_DELIMITER");
-  }
-
-  std::vector<std::string> folders =
-    cmSystemTools::tokenize(args[0], delimiter);
-
-  cmSourceGroup* sg = CM_NULLPTR;
-  sg = this->Makefile->GetSourceGroup(folders);
-  if (!sg) {
-    this->Makefile->AddSourceGroup(folders);
-    sg = this->Makefile->GetSourceGroup(folders);
-  }
+  cmSourceGroup* sg = this->Makefile->GetOrCreateSourceGroup(args[0]);
 
   if (!sg) {
     this->SetError("Could not create or find source group");
diff --git a/Source/cmSourceGroupCommand.h b/Source/cmSourceGroupCommand.h
index 7d56b0d65..ed02ca59a 100644
--- a/Source/cmSourceGroupCommand.h
+++ b/Source/cmSourceGroupCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmSourceGroupCommand_h
 #define cmSourceGroupCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmSourceGroupCommand; }
+  cmCommand* Clone() override { return new cmSourceGroupCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   bool processTree(const std::vector<std::string>& args,
diff --git a/Source/cmState.cxx b/Source/cmState.cxx
index 92e47f748..5957b5bb2 100644
--- a/Source/cmState.cxx
+++ b/Source/cmState.cxx
@@ -63,12 +63,12 @@ const char* cmState::GetTargetTypeName(cmStateEnums::TargetType targetType)
       return "UNKNOWN_LIBRARY";
   }
   assert(false && "Unexpected target type");
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 const char* cmCacheEntryTypes[] = { "BOOL",          "PATH",     "FILEPATH",
                                     "STRING",        "INTERNAL", "STATIC",
-                                    "UNINITIALIZED", CM_NULLPTR };
+                                    "UNINITIALIZED", nullptr };
 
 const char* cmState::CacheEntryTypeToString(cmStateEnums::CacheEntryType type)
 {
@@ -132,7 +132,7 @@ const char* cmState::GetCacheEntryValue(std::string const& key) const
 {
   cmCacheManager::CacheEntry* e = this->CacheManager->GetCacheEntry(key);
   if (!e) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return e->Value.c_str();
 }
@@ -188,7 +188,7 @@ const char* cmState::GetCacheEntryProperty(std::string const& key,
   cmCacheManager::CacheIterator it =
     this->CacheManager->GetCacheIterator(key.c_str());
   if (!it.PropertyExists(propertyName)) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return it.GetProperty(propertyName);
 }
@@ -224,7 +224,7 @@ void cmState::RemoveCacheEntryProperty(std::string const& key,
                                        std::string const& propertyName)
 {
   this->CacheManager->GetCacheIterator(key.c_str())
-    .SetProperty(propertyName, (void*)CM_NULLPTR);
+    .SetProperty(propertyName, nullptr);
 }
 
 cmStateSnapshot cmState::Reset()
@@ -303,7 +303,7 @@ cmPropertyDefinition const* cmState::GetPropertyDefinition(
       this->PropertyDefinitions.find(scope)->second;
     return &defs.find(name)->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 bool cmState::IsPropertyDefined(const std::string& name,
@@ -436,7 +436,7 @@ cmCommand* cmState::GetCommand(std::string const& name) const
   if (pos != this->BuiltinCommands.end()) {
     return pos->second;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 std::vector<std::string> cmState::GetCommandNames() const
@@ -444,15 +444,11 @@ std::vector<std::string> cmState::GetCommandNames() const
   std::vector<std::string> commandNames;
   commandNames.reserve(this->BuiltinCommands.size() +
                        this->ScriptedCommands.size());
-  for (std::map<std::string, cmCommand*>::const_iterator cmds =
-         this->BuiltinCommands.begin();
-       cmds != this->BuiltinCommands.end(); ++cmds) {
-    commandNames.push_back(cmds->first);
+  for (auto const& bc : this->BuiltinCommands) {
+    commandNames.push_back(bc.first);
   }
-  for (std::map<std::string, cmCommand*>::const_iterator cmds =
-         this->ScriptedCommands.begin();
-       cmds != this->ScriptedCommands.end(); ++cmds) {
-    commandNames.push_back(cmds->first);
+  for (auto const& sc : this->ScriptedCommands) {
+    commandNames.push_back(sc.first);
   }
   std::sort(commandNames.begin(), commandNames.end());
   commandNames.erase(std::unique(commandNames.begin(), commandNames.end()),
diff --git a/Source/cmStateDirectory.cxx b/Source/cmStateDirectory.cxx
index 46a185848..85e6366d9 100644
--- a/Source/cmStateDirectory.cxx
+++ b/Source/cmStateDirectory.cxx
@@ -6,7 +6,6 @@
 #include <algorithm>
 #include <assert.h>
 #include <iterator>
-#include <map>
 #include <utility>
 
 #include "cmProperty.h"
@@ -81,7 +80,7 @@ void cmStateDirectory::ComputeRelativePathTopBinary()
   if (result.size() < 2 || result.substr(0, 2) != "//") {
     this->DirectoryState->RelativePathTopBinary = result;
   } else {
-    this->DirectoryState->RelativePathTopBinary = "";
+    this->DirectoryState->RelativePathTopBinary.clear();
   }
 }
 
@@ -423,7 +422,7 @@ const char* cmStateDirectory::GetProperty(const std::string& prop,
                                           bool chain) const
 {
   static std::string output;
-  output = "";
+  output.clear();
   if (prop == "PARENT_DIRECTORY") {
     cmStateSnapshot parent = this->Snapshot_.GetBuildsystemDirectoryParent();
     if (parent.IsValid()) {
@@ -443,9 +442,9 @@ const char* cmStateDirectory::GetProperty(const std::string& prop,
     std::vector<std::string> child_dirs;
     std::vector<cmStateSnapshot> const& children =
       this->DirectoryState->Children;
-    for (std::vector<cmStateSnapshot>::const_iterator ci = children.begin();
-         ci != children.end(); ++ci) {
-      child_dirs.push_back(ci->GetDirectory().GetCurrentSource());
+    child_dirs.reserve(children.size());
+    for (cmStateSnapshot const& ci : children) {
+      child_dirs.push_back(ci.GetDirectory().GetCurrentSource());
     }
     output = cmJoin(child_dirs, ";");
     return output.c_str();
@@ -514,10 +513,8 @@ std::vector<std::string> cmStateDirectory::GetPropertyKeys() const
 {
   std::vector<std::string> keys;
   keys.reserve(this->DirectoryState->Properties.size());
-  for (cmPropertyMap::const_iterator it =
-         this->DirectoryState->Properties.begin();
-       it != this->DirectoryState->Properties.end(); ++it) {
-    keys.push_back(it->first);
+  for (auto const& it : this->DirectoryState->Properties) {
+    keys.push_back(it.first);
   }
   return keys;
 }
diff --git a/Source/cmStateSnapshot.cxx b/Source/cmStateSnapshot.cxx
index 77413c7b5..bdef3e529 100644
--- a/Source/cmStateSnapshot.cxx
+++ b/Source/cmStateSnapshot.cxx
@@ -220,7 +220,7 @@ void cmStateSnapshot::SetDefinition(std::string const& name,
 
 void cmStateSnapshot::RemoveDefinition(std::string const& name)
 {
-  this->Position->Vars->Set(name, CM_NULLPTR);
+  this->Position->Vars->Set(name, nullptr);
 }
 
 std::vector<std::string> cmStateSnapshot::UnusedKeys() const
diff --git a/Source/cmStateSnapshot.h b/Source/cmStateSnapshot.h
index 6293803b9..94d6274b9 100644
--- a/Source/cmStateSnapshot.h
+++ b/Source/cmStateSnapshot.h
@@ -19,7 +19,7 @@ class cmStateDirectory;
 class cmStateSnapshot
 {
 public:
-  cmStateSnapshot(cmState* state = CM_NULLPTR);
+  cmStateSnapshot(cmState* state = nullptr);
   cmStateSnapshot(cmState* state, cmStateDetail::PositionType position);
 
   const char* GetDefinition(std::string const& name) const;
diff --git a/Source/cmStringCommand.cxx b/Source/cmStringCommand.cxx
index 7a097ba21..55af0785d 100644
--- a/Source/cmStringCommand.cxx
+++ b/Source/cmStringCommand.cxx
@@ -4,6 +4,7 @@
 
 #include "cmsys/RegularExpression.hxx"
 #include <ctype.h>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
@@ -15,7 +16,6 @@
 #include "cmSystemTools.h"
 #include "cmTimestamp.h"
 #include "cmUuid.h"
-#include "cm_auto_ptr.hxx"
 
 class cmExecutionStatus;
 
@@ -62,6 +62,9 @@ bool cmStringCommand::InitialPass(std::vector<std::string> const& args,
   if (subCommand == "APPEND") {
     return this->HandleAppendCommand(args);
   }
+  if (subCommand == "PREPEND") {
+    return this->HandlePrependCommand(args);
+  }
   if (subCommand == "CONCAT") {
     return this->HandleConcatCommand(args);
   }
@@ -105,8 +108,8 @@ bool cmStringCommand::HandleHashCommand(std::vector<std::string> const& args)
     return false;
   }
 
-  CM_AUTO_PTR<cmCryptoHash> hash(cmCryptoHash::New(args[0].c_str()));
-  if (hash.get()) {
+  std::unique_ptr<cmCryptoHash> hash(cmCryptoHash::New(args[0].c_str()));
+  if (hash) {
     std::string out = hash->HashString(args[2]);
     this->Makefile->AddDefinition(args[1], out.c_str());
     return true;
@@ -309,6 +312,7 @@ bool cmStringCommand::RegexMatchAll(std::vector<std::string> const& args)
   std::string output;
   const char* p = input.c_str();
   while (re.find(p)) {
+    this->Makefile->ClearMatches();
     this->Makefile->StoreMatches(re);
     std::string::size_type l = re.start();
     std::string::size_type r = re.end();
@@ -391,6 +395,7 @@ bool cmStringCommand::RegexReplace(std::vector<std::string> const& args)
   std::string output;
   std::string::size_type base = 0;
   while (re.find(input.c_str() + base)) {
+    this->Makefile->ClearMatches();
     this->Makefile->StoreMatches(re);
     std::string::size_type l2 = re.start();
     std::string::size_type r = re.end();
@@ -407,13 +412,13 @@ bool cmStringCommand::RegexReplace(std::vector<std::string> const& args)
     }
 
     // Concatenate the replacement for the match.
-    for (unsigned int i = 0; i < replacement.size(); ++i) {
-      if (replacement[i].number < 0) {
+    for (RegexReplacement const& i : replacement) {
+      if (i.number < 0) {
         // This is just a plain-text part of the replacement.
-        output += replacement[i].value;
+        output += i.value;
       } else {
         // Replace with part of the match.
-        int n = replacement[i].number;
+        int n = i.number;
         std::string::size_type start = re.start(n);
         std::string::size_type end = re.end(n);
         std::string::size_type len = input.length() - base;
@@ -641,6 +646,30 @@ bool cmStringCommand::HandleAppendCommand(std::vector<std::string> const& args)
   return true;
 }
 
+bool cmStringCommand::HandlePrependCommand(
+  std::vector<std::string> const& args)
+{
+  if (args.size() < 2) {
+    this->SetError("sub-command PREPEND requires at least one argument.");
+    return false;
+  }
+
+  // Skip if nothing to prepend.
+  if (args.size() < 3) {
+    return true;
+  }
+
+  const std::string& variable = args[1];
+
+  std::string value = cmJoin(cmMakeRange(args).advance(2), std::string());
+  const char* oldValue = this->Makefile->GetDefinition(variable);
+  if (oldValue) {
+    value += oldValue;
+  }
+  this->Makefile->AddDefinition(variable, value.c_str());
+  return true;
+}
+
 bool cmStringCommand::HandleConcatCommand(std::vector<std::string> const& args)
 {
   if (args.size() < 2) {
@@ -789,7 +818,7 @@ bool cmStringCommand::HandleRandomCommand(std::vector<std::string> const& args)
   const char* alphaPtr = alphabet.c_str();
   int cc;
   for (cc = 0; cc < length; cc++) {
-    int idx = (int)(sizeofAlphabet * rand() / (RAND_MAX + 1.0));
+    int idx = static_cast<int>(sizeofAlphabet * rand() / (RAND_MAX + 1.0));
     result.push_back(*(alphaPtr + idx));
   }
   result.push_back(0);
diff --git a/Source/cmStringCommand.h b/Source/cmStringCommand.h
index 88015ad5e..b287e37b7 100644
--- a/Source/cmStringCommand.h
+++ b/Source/cmStringCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmStringCommand_h
 #define cmStringCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -22,14 +22,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmStringCommand; }
+  cmCommand* Clone() override { return new cmStringCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 protected:
   bool HandleConfigureCommand(std::vector<std::string> const& args);
@@ -46,6 +46,7 @@ protected:
   bool HandleLengthCommand(std::vector<std::string> const& args);
   bool HandleSubstringCommand(std::vector<std::string> const& args);
   bool HandleAppendCommand(std::vector<std::string> const& args);
+  bool HandlePrependCommand(std::vector<std::string> const& args);
   bool HandleConcatCommand(std::vector<std::string> const& args);
   bool HandleStripCommand(std::vector<std::string> const& args);
   bool HandleRandomCommand(std::vector<std::string> const& args);
diff --git a/Source/cmSubdirCommand.cxx b/Source/cmSubdirCommand.cxx
index 3727dfa25..c74ca59bb 100644
--- a/Source/cmSubdirCommand.cxx
+++ b/Source/cmSubdirCommand.cxx
@@ -18,36 +18,35 @@ bool cmSubdirCommand::InitialPass(std::vector<std::string> const& args,
   bool res = true;
   bool excludeFromAll = false;
 
-  for (std::vector<std::string>::const_iterator i = args.begin();
-       i != args.end(); ++i) {
-    if (*i == "EXCLUDE_FROM_ALL") {
+  for (std::string const& i : args) {
+    if (i == "EXCLUDE_FROM_ALL") {
       excludeFromAll = true;
       continue;
     }
-    if (*i == "PREORDER") {
+    if (i == "PREORDER") {
       // Ignored
       continue;
     }
 
     // if they specified a relative path then compute the full
     std::string srcPath =
-      std::string(this->Makefile->GetCurrentSourceDirectory()) + "/" + *i;
+      std::string(this->Makefile->GetCurrentSourceDirectory()) + "/" + i;
     if (cmSystemTools::FileIsDirectory(srcPath)) {
       std::string binPath =
-        std::string(this->Makefile->GetCurrentBinaryDirectory()) + "/" + *i;
+        std::string(this->Makefile->GetCurrentBinaryDirectory()) + "/" + i;
       this->Makefile->AddSubDirectory(srcPath, binPath, excludeFromAll, false);
     }
     // otherwise it is a full path
-    else if (cmSystemTools::FileIsDirectory(*i)) {
+    else if (cmSystemTools::FileIsDirectory(i)) {
       // we must compute the binPath from the srcPath, we just take the last
       // element from the source path and use that
       std::string binPath =
         std::string(this->Makefile->GetCurrentBinaryDirectory()) + "/" +
-        cmSystemTools::GetFilenameName(*i);
-      this->Makefile->AddSubDirectory(*i, binPath, excludeFromAll, false);
+        cmSystemTools::GetFilenameName(i);
+      this->Makefile->AddSubDirectory(i, binPath, excludeFromAll, false);
     } else {
       std::string error = "Incorrect SUBDIRS command. Directory: ";
-      error += *i + " does not exist.";
+      error += i + " does not exist.";
       this->SetError(error);
       res = false;
     }
diff --git a/Source/cmSubdirCommand.h b/Source/cmSubdirCommand.h
index a2af0fd58..adab75711 100644
--- a/Source/cmSubdirCommand.h
+++ b/Source/cmSubdirCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmSubdirCommand_h
 #define cmSubdirCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -25,14 +25,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmSubdirCommand; }
+  cmCommand* Clone() override { return new cmSubdirCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmSubdirDependsCommand.h b/Source/cmSubdirDependsCommand.h
index d8ea9284f..2db28c66c 100644
--- a/Source/cmSubdirDependsCommand.h
+++ b/Source/cmSubdirDependsCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmSubdirDependsCommand_h
 #define cmSubdirDependsCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -15,9 +15,9 @@ class cmExecutionStatus;
 class cmSubdirDependsCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmSubdirDependsCommand; }
+  cmCommand* Clone() override { return new cmSubdirDependsCommand; }
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmSystemTools.cxx b/Source/cmSystemTools.cxx
index f7192e0b6..63c1452e6 100644
--- a/Source/cmSystemTools.cxx
+++ b/Source/cmSystemTools.cxx
@@ -353,8 +353,8 @@ bool cmSystemTools::IsInternallyOn(const char* val)
     return false;
   }
 
-  for (std::string::iterator c = v.begin(); c != v.end(); c++) {
-    *c = static_cast<char>(toupper(*c));
+  for (char& c : v) {
+    c = static_cast<char>(toupper(c));
   }
   return v == "I_ON";
 }
@@ -378,8 +378,8 @@ bool cmSystemTools::IsOn(const char* val)
     onValues.insert("TRUE");
     onValues.insert("Y");
   }
-  for (std::string::iterator c = v.begin(); c != v.end(); c++) {
-    *c = static_cast<char>(toupper(*c));
+  for (char& c : v) {
+    c = static_cast<char>(toupper(c));
   }
   return (onValues.count(v) > 0);
 }
@@ -414,8 +414,8 @@ bool cmSystemTools::IsOff(const char* val)
   }
   // Try and avoid toupper().
   std::string v(val, len);
-  for (std::string::iterator c = v.begin(); c != v.end(); c++) {
-    *c = static_cast<char>(toupper(*c));
+  for (char& c : v) {
+    c = static_cast<char>(toupper(c));
   }
   return (offValues.count(v) > 0);
 }
@@ -458,7 +458,7 @@ void cmSystemTools::ParseWindowsCommandLine(const char* command,
           arg.append(1, *c);
         } else if (in_argument) {
           args.push_back(arg);
-          arg = "";
+          arg.clear();
           in_argument = false;
         }
       } else {
@@ -559,7 +559,7 @@ std::vector<std::string> cmSystemTools::ParseArguments(const char* command)
     while (*c == ' ' || *c == '\t') {
       ++c;
     }
-    arg = "";
+    arg.clear();
     if (*c == '"') {
       // Parse a quoted argument.
       ++c;
@@ -603,6 +603,56 @@ std::vector<std::string> cmSystemTools::ParseArguments(const char* command)
   return args;
 }
 
+bool cmSystemTools::SplitProgramFromArgs(std::string const& command,
+                                         std::string& program,
+                                         std::string& args)
+{
+  const char* c = command.c_str();
+
+  // Skip leading whitespace.
+  while (isspace(static_cast<unsigned char>(*c))) {
+    ++c;
+  }
+
+  // Parse one command-line element up to an unquoted space.
+  bool in_escape = false;
+  bool in_double = false;
+  bool in_single = false;
+  for (; *c; ++c) {
+    if (in_single) {
+      if (*c == '\'') {
+        in_single = false;
+      } else {
+        program += *c;
+      }
+    } else if (in_escape) {
+      in_escape = false;
+      program += *c;
+    } else if (*c == '\\') {
+      in_escape = true;
+    } else if (in_double) {
+      if (*c == '"') {
+        in_double = false;
+      } else {
+        program += *c;
+      }
+    } else if (*c == '"') {
+      in_double = true;
+    } else if (*c == '\'') {
+      in_single = true;
+    } else if (isspace(static_cast<unsigned char>(*c))) {
+      break;
+    } else {
+      program += *c;
+    }
+  }
+
+  // The remainder of the command line holds unparsed arguments.
+  args = c;
+
+  return !in_single && !in_escape && !in_double;
+}
+
 size_t cmSystemTools::CalculateCommandLineLengthLimit()
 {
   size_t sz =
@@ -650,11 +700,11 @@ bool cmSystemTools::RunSingleCommand(std::vector<std::string> const& command,
                                      double timeout, Encoding encoding)
 {
   std::vector<const char*> argv;
-  for (std::vector<std::string>::const_iterator a = command.begin();
-       a != command.end(); ++a) {
-    argv.push_back(a->c_str());
+  argv.reserve(command.size() + 1);
+  for (std::string const& cmd : command) {
+    argv.push_back(cmd.c_str());
   }
-  argv.push_back(CM_NULLPTR);
+  argv.push_back(nullptr);
 
   cmsysProcess* cp = cmsysProcess_New();
   cmsysProcess_SetCommand(cp, &*argv.begin());
@@ -666,12 +716,12 @@ bool cmSystemTools::RunSingleCommand(std::vector<std::string> const& command,
   if (outputflag == OUTPUT_PASSTHROUGH) {
     cmsysProcess_SetPipeShared(cp, cmsysProcess_Pipe_STDOUT, 1);
     cmsysProcess_SetPipeShared(cp, cmsysProcess_Pipe_STDERR, 1);
-    captureStdOut = CM_NULLPTR;
-    captureStdErr = CM_NULLPTR;
+    captureStdOut = nullptr;
+    captureStdErr = nullptr;
   } else if (outputflag == OUTPUT_MERGE ||
              (captureStdErr && captureStdErr == captureStdOut)) {
     cmsysProcess_SetOption(cp, cmsysProcess_Option_MergeOutput, 1);
-    captureStdErr = CM_NULLPTR;
+    captureStdErr = nullptr;
   }
   assert(!captureStdErr || captureStdErr != captureStdOut);
 
@@ -687,7 +737,7 @@ bool cmSystemTools::RunSingleCommand(std::vector<std::string> const& command,
   std::string strdata;
   if (outputflag != OUTPUT_PASSTHROUGH &&
       (captureStdOut || captureStdErr || outputflag != OUTPUT_NONE)) {
-    while ((pipe = cmsysProcess_WaitForData(cp, &data, &length, CM_NULLPTR)) >
+    while ((pipe = cmsysProcess_WaitForData(cp, &data, &length, nullptr)) >
            0) {
       // Translate NULL characters in the output into valid text.
       for (int i = 0; i < length; ++i) {
@@ -727,7 +777,7 @@ bool cmSystemTools::RunSingleCommand(std::vector<std::string> const& command,
     }
   }
 
-  cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+  cmsysProcess_WaitForExit(cp, nullptr);
 
   if (captureStdOut) {
     captureStdOut->assign(tempStdOut.begin(), tempStdOut.end());
@@ -754,6 +804,8 @@ bool cmSystemTools::RunSingleCommand(std::vector<std::string> const& command,
     }
     if (captureStdErr) {
       captureStdErr->append(exception_str, strlen(exception_str));
+    } else if (captureStdOut) {
+      captureStdOut->append(exception_str, strlen(exception_str));
     }
     result = false;
   } else if (cmsysProcess_GetState(cp) == cmsysProcess_State_Error) {
@@ -763,6 +815,8 @@ bool cmSystemTools::RunSingleCommand(std::vector<std::string> const& command,
     }
     if (captureStdErr) {
       captureStdErr->append(error_str, strlen(error_str));
+    } else if (captureStdOut) {
+      captureStdOut->append(error_str, strlen(error_str));
     }
     result = false;
   } else if (cmsysProcess_GetState(cp) == cmsysProcess_State_Expired) {
@@ -814,11 +868,10 @@ bool cmSystemTools::DoesFileExistWithExtensions(
 {
   std::string hname;
 
-  for (std::vector<std::string>::const_iterator ext = headerExts.begin();
-       ext != headerExts.end(); ++ext) {
+  for (std::string const& headerExt : headerExts) {
     hname = name;
     hname += ".";
-    hname += *ext;
+    hname += headerExt;
     if (cmSystemTools::FileExists(hname.c_str())) {
       return true;
     }
@@ -934,19 +987,17 @@ bool cmSystemTools::RenameFile(const char* oldname, const char* newname)
 #endif
 }
 
-bool cmSystemTools::ComputeFileMD5(const std::string& source, char* md5out)
+std::string cmSystemTools::ComputeFileHash(const std::string& source,
+                                           cmCryptoHash::Algo algo)
 {
 #if defined(CMAKE_BUILD_WITH_CMAKE)
-  cmCryptoHash md5(cmCryptoHash::AlgoMD5);
-  std::string const str = md5.HashFile(source);
-  strncpy(md5out, str.c_str(), 32);
-  return !str.empty();
+  cmCryptoHash hash(algo);
+  return hash.HashFile(source);
 #else
   (void)source;
-  (void)md5out;
-  cmSystemTools::Message("md5sum not supported in bootstrapping mode",
+  cmSystemTools::Message("hashsum not supported in bootstrapping mode",
                          "Error");
-  return false;
+  return std::string();
 #endif
 }
 
@@ -1138,7 +1189,7 @@ void cmSystemTools::ExpandListArgument(const std::string& arg,
           if (!newArg.empty() || emptyArgs) {
             // Add the last argument if the string is not empty.
             newargs.push_back(newArg);
-            newArg = "";
+            newArg.clear();
           }
         }
       } break;
@@ -1329,7 +1380,7 @@ std::string cmSystemTools::CollapseCombinedPath(std::string const& dir,
   if (fileComponents.empty()) {
     return dir;
   }
-  if (fileComponents[0] != "") {
+  if (!fileComponents[0].empty()) {
     // File is not a relative path.
     return file;
   }
@@ -1369,9 +1420,8 @@ std::vector<std::string> cmSystemTools::GetEnvironmentVariables()
 
 void cmSystemTools::AppendEnv(std::vector<std::string> const& env)
 {
-  for (std::vector<std::string>::const_iterator eit = env.begin();
-       eit != env.end(); ++eit) {
-    cmSystemTools::PutEnv(*eit);
+  for (std::string const& eit : env) {
+    cmSystemTools::PutEnv(eit);
   }
 }
 
@@ -1384,10 +1434,7 @@ cmSystemTools::SaveRestoreEnvironment::~SaveRestoreEnvironment()
 {
   // First clear everything in the current environment:
   std::vector<std::string> currentEnv = GetEnvironmentVariables();
-  for (std::vector<std::string>::const_iterator eit = currentEnv.begin();
-       eit != currentEnv.end(); ++eit) {
-    std::string var(*eit);
-
+  for (std::string var : currentEnv) {
     std::string::size_type pos = var.find('=');
     if (pos != std::string::npos) {
       var = var.substr(0, pos);
@@ -1466,9 +1513,7 @@ bool cmSystemTools::CreateTar(const char* outFileName,
 
   a.SetMTime(mtime);
   a.SetVerbose(verbose);
-  for (std::vector<std::string>::const_iterator i = files.begin();
-       i != files.end(); ++i) {
-    std::string path = *i;
+  for (auto path : files) {
     if (cmSystemTools::FileIsFullPath(path.c_str())) {
       // Get the relative path to the file.
       path = cmSystemTools::RelativePath(cwd.c_str(), path.c_str());
@@ -1520,22 +1565,22 @@ void list_item_verbose(FILE* out, struct archive_entry* entry)
 
   /* Use uname if it's present, else uid. */
   p = archive_entry_uname(entry);
-  if ((p == CM_NULLPTR) || (*p == '\0')) {
-    sprintf(tmp, "%lu ", (unsigned long)archive_entry_uid(entry));
+  if ((p == nullptr) || (*p == '\0')) {
+    sprintf(tmp, "%lu ", static_cast<unsigned long>(archive_entry_uid(entry)));
     p = tmp;
   }
   w = strlen(p);
   if (w > u_width) {
     u_width = w;
   }
-  fprintf(out, "%-*s ", (int)u_width, p);
+  fprintf(out, "%-*s ", static_cast<int>(u_width), p);
   /* Use gname if it's present, else gid. */
   p = archive_entry_gname(entry);
-  if (p != CM_NULLPTR && p[0] != '\0') {
+  if (p != nullptr && p[0] != '\0') {
     fprintf(out, "%s", p);
     w = strlen(p);
   } else {
-    sprintf(tmp, "%lu", (unsigned long)archive_entry_gid(entry));
+    sprintf(tmp, "%lu", static_cast<unsigned long>(archive_entry_gid(entry)));
     w = strlen(tmp);
     fprintf(out, "%s", tmp);
   }
@@ -1547,8 +1592,9 @@ void list_item_verbose(FILE* out, struct archive_entry* entry)
    */
   if (archive_entry_filetype(entry) == AE_IFCHR ||
       archive_entry_filetype(entry) == AE_IFBLK) {
-    sprintf(tmp, "%lu,%lu", (unsigned long)archive_entry_rdevmajor(entry),
-            (unsigned long)archive_entry_rdevminor(entry));
+    unsigned long rdevmajor = archive_entry_rdevmajor(entry);
+    unsigned long rdevminor = archive_entry_rdevminor(entry);
+    sprintf(tmp, "%lu,%lu", rdevmajor, rdevminor);
   } else {
     /*
      * Note the use of platform-dependent macros to format
@@ -1556,12 +1602,12 @@ void list_item_verbose(FILE* out, struct archive_entry* entry)
      * corresponding type for the cast.
      */
     sprintf(tmp, BSDTAR_FILESIZE_PRINTF,
-            (BSDTAR_FILESIZE_TYPE)archive_entry_size(entry));
+            static_cast<BSDTAR_FILESIZE_TYPE>(archive_entry_size(entry)));
   }
   if (w + strlen(tmp) >= gs_width) {
     gs_width = w + strlen(tmp) + 1;
   }
-  fprintf(out, "%*s", (int)(gs_width - w), tmp);
+  fprintf(out, "%*s", static_cast<int>(gs_width - w), tmp);
 
   /* Format the time using 'ls -l' conventions. */
   tim = archive_entry_mtime(entry);
@@ -1730,7 +1776,7 @@ int cmSystemTools::WaitForLine(cmsysProcess* process, std::string& line,
                                double timeout, std::vector<char>& out,
                                std::vector<char>& err)
 {
-  line = "";
+  line.clear();
   std::vector<char>::iterator outiter = out.begin();
   std::vector<char>::iterator erriter = err.begin();
   cmProcessOutput processOutput;
@@ -1973,7 +2019,7 @@ unsigned int cmSystemTools::RandomSeed()
 
   // Try using a real random source.
   cmsys::ifstream fin;
-  fin.rdbuf()->pubsetbuf(CM_NULLPTR, 0); // Unbuffered read.
+  fin.rdbuf()->pubsetbuf(nullptr, 0); // Unbuffered read.
   fin.open("/dev/urandom");
   if (fin.good() && fin.read(seed.bytes, sizeof(seed)) &&
       fin.gcount() == sizeof(seed)) {
@@ -1982,7 +2028,7 @@ unsigned int cmSystemTools::RandomSeed()
 
   // Fall back to the time and pid.
   struct timeval t;
-  gettimeofday(&t, CM_NULLPTR);
+  gettimeofday(&t, nullptr);
   unsigned int pid = static_cast<unsigned int>(getpid());
   unsigned int tv_sec = static_cast<unsigned int>(t.tv_sec);
   unsigned int tv_usec = static_cast<unsigned int>(t.tv_usec);
@@ -2020,7 +2066,7 @@ void cmSystemTools::FindCMakeResources(const char* argv0)
 #undef CM_EXE_PATH_LOCAL_SIZE
   char* exe_path = exe_path_local;
   if (_NSGetExecutablePath(exe_path, &exe_path_size) < 0) {
-    exe_path = (char*)malloc(exe_path_size);
+    exe_path = static_cast<char*>(malloc(exe_path_size));
     _NSGetExecutablePath(exe_path, &exe_path_size);
   }
   exe_dir =
@@ -2070,19 +2116,19 @@ void cmSystemTools::FindCMakeResources(const char* argv0)
   cmSystemToolsCMakeGUICommand += "/cmake-gui";
   cmSystemToolsCMakeGUICommand += cmSystemTools::GetExecutableExtension();
   if (!cmSystemTools::FileExists(cmSystemToolsCMakeGUICommand.c_str())) {
-    cmSystemToolsCMakeGUICommand = "";
+    cmSystemToolsCMakeGUICommand.clear();
   }
   cmSystemToolsCMakeCursesCommand = exe_dir;
   cmSystemToolsCMakeCursesCommand += "/ccmake";
   cmSystemToolsCMakeCursesCommand += cmSystemTools::GetExecutableExtension();
   if (!cmSystemTools::FileExists(cmSystemToolsCMakeCursesCommand.c_str())) {
-    cmSystemToolsCMakeCursesCommand = "";
+    cmSystemToolsCMakeCursesCommand.clear();
   }
   cmSystemToolsCMClDepsCommand = exe_dir;
   cmSystemToolsCMClDepsCommand += "/cmcldeps";
   cmSystemToolsCMClDepsCommand += cmSystemTools::GetExecutableExtension();
   if (!cmSystemTools::FileExists(cmSystemToolsCMClDepsCommand.c_str())) {
-    cmSystemToolsCMClDepsCommand = "";
+    cmSystemToolsCMClDepsCommand.clear();
   }
 
 #ifdef CMAKE_BUILD_WITH_CMAKE
@@ -2280,12 +2326,12 @@ struct cmSystemToolsRPathInfo
 };
 #endif
 
+#if defined(CMAKE_USE_ELF_PARSER)
 bool cmSystemTools::ChangeRPath(std::string const& file,
                                 std::string const& oldRPath,
                                 std::string const& newRPath, std::string* emsg,
                                 bool* changed)
 {
-#if defined(CMAKE_USE_ELF_PARSER)
   if (changed) {
     *changed = false;
   }
@@ -2298,8 +2344,8 @@ bool cmSystemTools::ChangeRPath(std::string const& file,
 
     // Get the RPATH and RUNPATH entries from it.
     int se_count = 0;
-    cmELF::StringEntry const* se[2] = { CM_NULLPTR, CM_NULLPTR };
-    const char* se_name[2] = { CM_NULLPTR, CM_NULLPTR };
+    cmELF::StringEntry const* se[2] = { nullptr, nullptr };
+    const char* se_name[2] = { nullptr, nullptr };
     if (cmELF::StringEntry const* se_rpath = elf.GetRPath()) {
       se[se_count] = se_rpath;
       se_name[se_count] = "RPATH";
@@ -2451,15 +2497,16 @@ bool cmSystemTools::ChangeRPath(std::string const& file,
     *changed = true;
   }
   return true;
+}
 #else
-  (void)file;
-  (void)oldRPath;
-  (void)newRPath;
-  (void)emsg;
-  (void)changed;
+bool cmSystemTools::ChangeRPath(std::string const& /*file*/,
+                                std::string const& /*oldRPath*/,
+                                std::string const& /*newRPath*/,
+                                std::string* /*emsg*/, bool* /*changed*/)
+{
   return false;
-#endif
 }
+#endif
 
 bool cmSystemTools::VersionCompare(cmSystemTools::CompareOp op,
                                    const char* lhss, const char* rhss)
@@ -2593,10 +2640,10 @@ int cmSystemTools::strverscmp(std::string const& lhs, std::string const& rhs)
   return cm_strverscmp(lhs.c_str(), rhs.c_str());
 }
 
+#if defined(CMAKE_USE_ELF_PARSER)
 bool cmSystemTools::RemoveRPath(std::string const& file, std::string* emsg,
                                 bool* removed)
 {
-#if defined(CMAKE_USE_ELF_PARSER)
   if (removed) {
     *removed = false;
   }
@@ -2612,7 +2659,7 @@ bool cmSystemTools::RemoveRPath(std::string const& file, std::string* emsg,
     // Get the RPATH and RUNPATH entries from it and sort them by index
     // in the dynamic section header.
     int se_count = 0;
-    cmELF::StringEntry const* se[2] = { CM_NULLPTR, CM_NULLPTR };
+    cmELF::StringEntry const* se[2] = { nullptr, nullptr };
     if (cmELF::StringEntry const* se_rpath = elf.GetRPath()) {
       se[se_count++] = se_rpath;
     }
@@ -2734,13 +2781,14 @@ bool cmSystemTools::RemoveRPath(std::string const& file, std::string* emsg,
     *removed = true;
   }
   return true;
+}
 #else
-  (void)file;
-  (void)emsg;
-  (void)removed;
+bool cmSystemTools::RemoveRPath(std::string const& /*file*/,
+                                std::string* /*emsg*/, bool* /*removed*/)
+{
   return false;
-#endif
 }
+#endif
 
 bool cmSystemTools::CheckRPath(std::string const& file,
                                std::string const& newRPath)
diff --git a/Source/cmSystemTools.h b/Source/cmSystemTools.h
index 9de796728..e7082e6b1 100644
--- a/Source/cmSystemTools.h
+++ b/Source/cmSystemTools.h
@@ -3,8 +3,9 @@
 #ifndef cmSystemTools_h
 #define cmSystemTools_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
+#include "cmCryptoHash.h"
 #include "cmProcessOutput.h"
 #include "cmsys/Process.h"
 #include "cmsys/SystemTools.hxx" // IWYU pragma: export
@@ -61,34 +62,34 @@ public:
    *  set to false, will disable furthur messages (cancel).
    */
   static void SetMessageCallback(MessageCallback f,
-                                 void* clientData = CM_NULLPTR);
+                                 void* clientData = nullptr);
 
   /**
    * Display an error message.
    */
-  static void Error(const char* m, const char* m2 = CM_NULLPTR,
-                    const char* m3 = CM_NULLPTR, const char* m4 = CM_NULLPTR);
+  static void Error(const char* m, const char* m2 = nullptr,
+                    const char* m3 = nullptr, const char* m4 = nullptr);
 
   /**
    * Display a message.
    */
-  static void Message(const char* m, const char* title = CM_NULLPTR);
+  static void Message(const char* m, const char* title = nullptr);
 
   typedef void (*OutputCallback)(const char*, size_t length, void*);
 
   ///! Send a string to stdout
   static void Stdout(const char* s);
   static void Stdout(const char* s, size_t length);
-  static void SetStdoutCallback(OutputCallback, void* clientData = CM_NULLPTR);
+  static void SetStdoutCallback(OutputCallback, void* clientData = nullptr);
 
   ///! Send a string to stderr
   static void Stderr(const char* s);
   static void Stderr(const char* s, size_t length);
-  static void SetStderrCallback(OutputCallback, void* clientData = CM_NULLPTR);
+  static void SetStderrCallback(OutputCallback, void* clientData = nullptr);
 
   typedef bool (*InterruptCallback)(void*);
   static void SetInterruptCallback(InterruptCallback f,
-                                   void* clientData = CM_NULLPTR);
+                                   void* clientData = nullptr);
   static bool GetInterruptFlag();
 
   ///! Return true if there was an error at any point.
@@ -179,8 +180,9 @@ public:
       if possible).  */
   static bool RenameFile(const char* oldname, const char* newname);
 
-  ///! Compute the md5sum of a file
-  static bool ComputeFileMD5(const std::string& source, char* md5out);
+  ///! Compute the hash of a file
+  static std::string ComputeFileHash(const std::string& source,
+                                     cmCryptoHash::Algo algo);
 
   /** Compute the md5sum of a string.  */
   static std::string ComputeStringMD5(const std::string& input);
@@ -218,10 +220,10 @@ public:
     OUTPUT_PASSTHROUGH
   };
   static bool RunSingleCommand(const char* command,
-                               std::string* captureStdOut = CM_NULLPTR,
-                               std::string* captureStdErr = CM_NULLPTR,
-                               int* retVal = CM_NULLPTR,
-                               const char* dir = CM_NULLPTR,
+                               std::string* captureStdOut = nullptr,
+                               std::string* captureStdErr = nullptr,
+                               int* retVal = nullptr,
+                               const char* dir = nullptr,
                                OutputOption outputflag = OUTPUT_MERGE,
                                double timeout = 0.0);
   /**
@@ -230,10 +232,10 @@ public:
    * be in comand[1]...command[command.size()]
    */
   static bool RunSingleCommand(std::vector<std::string> const& command,
-                               std::string* captureStdOut = CM_NULLPTR,
-                               std::string* captureStdErr = CM_NULLPTR,
-                               int* retVal = CM_NULLPTR,
-                               const char* dir = CM_NULLPTR,
+                               std::string* captureStdOut = nullptr,
+                               std::string* captureStdErr = nullptr,
+                               int* retVal = nullptr,
+                               const char* dir = nullptr,
                                OutputOption outputflag = OUTPUT_MERGE,
                                double timeout = 0.0,
                                Encoding encoding = cmProcessOutput::Auto);
@@ -253,6 +255,11 @@ public:
   static void ParseUnixCommandLine(const char* command,
                                    std::vector<std::string>& args);
 
+  /** Split a command-line string into the parsed command and the unparsed
+      arguments.  Returns false on unfinished quoting or escaping.  */
+  static bool SplitProgramFromArgs(std::string const& command,
+                                   std::string& program, std::string& args);
+
   /**
    * Handle response file in an argument list and return a new argument list
    * **/
@@ -461,13 +468,12 @@ public:
   /** Try to set the RPATH in an ELF binary.  */
   static bool ChangeRPath(std::string const& file, std::string const& oldRPath,
                           std::string const& newRPath,
-                          std::string* emsg = CM_NULLPTR,
-                          bool* changed = CM_NULLPTR);
+                          std::string* emsg = nullptr,
+                          bool* changed = nullptr);
 
   /** Try to remove the RPATH from an ELF binary.  */
-  static bool RemoveRPath(std::string const& file,
-                          std::string* emsg = CM_NULLPTR,
-                          bool* removed = CM_NULLPTR);
+  static bool RemoveRPath(std::string const& file, std::string* emsg = nullptr,
+                          bool* removed = nullptr);
 
   /** Check whether the RPATH in an ELF binary contains the path
       given.  */
diff --git a/Source/cmTarget.cxx b/Source/cmTarget.cxx
index c95a3ca2c..c6cd5026f 100644
--- a/Source/cmTarget.cxx
+++ b/Source/cmTarget.cxx
@@ -5,10 +5,12 @@
 #include "cmsys/RegularExpression.hxx"
 #include <algorithm>
 #include <assert.h>
+#include <iterator>
 #include <map>
 #include <set>
 #include <sstream>
 #include <string.h>
+#include <unordered_set>
 
 #include "cmAlgorithms.h"
 #include "cmGeneratorExpression.h"
@@ -26,7 +28,6 @@
 #include "cmStateSnapshot.h"
 #include "cmSystemTools.h"
 #include "cmTargetPropertyComputer.h"
-#include "cm_unordered_set.hxx"
 #include "cmake.h"
 
 template <>
@@ -75,27 +76,23 @@ const char* cmTargetPropertyComputer::GetSources<cmTarget>(
 {
   cmStringRange entries = tgt->GetSourceEntries();
   if (entries.empty()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   std::ostringstream ss;
   const char* sep = "";
-  for (std::vector<std::string>::const_iterator i = entries.begin();
-       i != entries.end(); ++i) {
-    std::string const& entry = *i;
-
+  for (std::string const& entry : entries) {
     std::vector<std::string> files;
     cmSystemTools::ExpandListArgument(entry, files);
-    for (std::vector<std::string>::const_iterator li = files.begin();
-         li != files.end(); ++li) {
-      if (cmHasLiteralPrefix(*li, "$<TARGET_OBJECTS:") &&
-          (*li)[li->size() - 1] == '>') {
-        std::string objLibName = li->substr(17, li->size() - 18);
+    for (std::string const& file : files) {
+      if (cmHasLiteralPrefix(file, "$<TARGET_OBJECTS:") &&
+          file[file.size() - 1] == '>') {
+        std::string objLibName = file.substr(17, file.size() - 18);
 
         if (cmGeneratorExpression::Find(objLibName) != std::string::npos) {
           ss << sep;
           sep = ";";
-          ss << *li;
+          ss << file;
           continue;
         }
 
@@ -130,14 +127,14 @@ const char* cmTargetPropertyComputer::GetSources<cmTarget>(
         if (addContent) {
           ss << sep;
           sep = ";";
-          ss << *li;
+          ss << file;
         }
-      } else if (cmGeneratorExpression::Find(*li) == std::string::npos) {
+      } else if (cmGeneratorExpression::Find(file) == std::string::npos) {
         ss << sep;
         sep = ";";
-        ss << *li;
+        ss << file;
       } else {
-        cmSourceFile* sf = tgt->GetMakefile()->GetOrCreateSource(*li);
+        cmSourceFile* sf = tgt->GetMakefile()->GetOrCreateSource(file);
         // Construct what is known about this source file location.
         cmSourceFileLocation const& location = sf->GetLocation();
         std::string sname = location.GetDirectory();
@@ -211,77 +208,79 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
   // Setup default property values.
   if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
       this->GetType() != cmStateEnums::UTILITY) {
-    this->SetPropertyDefault("ANDROID_API", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_API_MIN", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_ARCH", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_STL_TYPE", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_SKIP_ANT_STEP", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_PROCESS_MAX", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_PROGUARD", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_PROGUARD_CONFIG_PATH", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_SECURE_PROPS_PATH", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_NATIVE_LIB_DIRECTORIES", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_NATIVE_LIB_DEPENDENCIES", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_JAVA_SOURCE_DIR", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_JAR_DIRECTORIES", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_JAR_DEPENDENCIES", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_ASSETS_DIRECTORIES", CM_NULLPTR);
-    this->SetPropertyDefault("ANDROID_ANT_ADDITIONAL_OPTIONS", CM_NULLPTR);
-    this->SetPropertyDefault("BUILD_RPATH", CM_NULLPTR);
-    this->SetPropertyDefault("INSTALL_NAME_DIR", CM_NULLPTR);
+    this->SetPropertyDefault("ANDROID_API", nullptr);
+    this->SetPropertyDefault("ANDROID_API_MIN", nullptr);
+    this->SetPropertyDefault("ANDROID_ARCH", nullptr);
+    this->SetPropertyDefault("ANDROID_STL_TYPE", nullptr);
+    this->SetPropertyDefault("ANDROID_SKIP_ANT_STEP", nullptr);
+    this->SetPropertyDefault("ANDROID_PROCESS_MAX", nullptr);
+    this->SetPropertyDefault("ANDROID_PROGUARD", nullptr);
+    this->SetPropertyDefault("ANDROID_PROGUARD_CONFIG_PATH", nullptr);
+    this->SetPropertyDefault("ANDROID_SECURE_PROPS_PATH", nullptr);
+    this->SetPropertyDefault("ANDROID_NATIVE_LIB_DIRECTORIES", nullptr);
+    this->SetPropertyDefault("ANDROID_NATIVE_LIB_DEPENDENCIES", nullptr);
+    this->SetPropertyDefault("ANDROID_JAVA_SOURCE_DIR", nullptr);
+    this->SetPropertyDefault("ANDROID_JAR_DIRECTORIES", nullptr);
+    this->SetPropertyDefault("ANDROID_JAR_DEPENDENCIES", nullptr);
+    this->SetPropertyDefault("ANDROID_ASSETS_DIRECTORIES", nullptr);
+    this->SetPropertyDefault("ANDROID_ANT_ADDITIONAL_OPTIONS", nullptr);
+    this->SetPropertyDefault("BUILD_RPATH", nullptr);
+    this->SetPropertyDefault("INSTALL_NAME_DIR", nullptr);
     this->SetPropertyDefault("INSTALL_RPATH", "");
     this->SetPropertyDefault("INSTALL_RPATH_USE_LINK_PATH", "OFF");
-    this->SetPropertyDefault("INTERPROCEDURAL_OPTIMIZATION", CM_NULLPTR);
+    this->SetPropertyDefault("INTERPROCEDURAL_OPTIMIZATION", nullptr);
     this->SetPropertyDefault("SKIP_BUILD_RPATH", "OFF");
     this->SetPropertyDefault("BUILD_WITH_INSTALL_RPATH", "OFF");
-    this->SetPropertyDefault("ARCHIVE_OUTPUT_DIRECTORY", CM_NULLPTR);
-    this->SetPropertyDefault("LIBRARY_OUTPUT_DIRECTORY", CM_NULLPTR);
-    this->SetPropertyDefault("RUNTIME_OUTPUT_DIRECTORY", CM_NULLPTR);
-    this->SetPropertyDefault("PDB_OUTPUT_DIRECTORY", CM_NULLPTR);
-    this->SetPropertyDefault("COMPILE_PDB_OUTPUT_DIRECTORY", CM_NULLPTR);
-    this->SetPropertyDefault("Fortran_FORMAT", CM_NULLPTR);
-    this->SetPropertyDefault("Fortran_MODULE_DIRECTORY", CM_NULLPTR);
-    this->SetPropertyDefault("GNUtoMS", CM_NULLPTR);
-    this->SetPropertyDefault("OSX_ARCHITECTURES", CM_NULLPTR);
-    this->SetPropertyDefault("IOS_INSTALL_COMBINED", CM_NULLPTR);
-    this->SetPropertyDefault("AUTOMOC", CM_NULLPTR);
-    this->SetPropertyDefault("AUTOUIC", CM_NULLPTR);
-    this->SetPropertyDefault("AUTORCC", CM_NULLPTR);
-    this->SetPropertyDefault("AUTOMOC_DEPEND_FILTERS", CM_NULLPTR);
-    this->SetPropertyDefault("AUTOMOC_MOC_OPTIONS", CM_NULLPTR);
-    this->SetPropertyDefault("AUTOUIC_OPTIONS", CM_NULLPTR);
-    this->SetPropertyDefault("AUTOUIC_SEARCH_PATHS", CM_NULLPTR);
-    this->SetPropertyDefault("AUTORCC_OPTIONS", CM_NULLPTR);
-    this->SetPropertyDefault("LINK_DEPENDS_NO_SHARED", CM_NULLPTR);
-    this->SetPropertyDefault("LINK_INTERFACE_LIBRARIES", CM_NULLPTR);
-    this->SetPropertyDefault("WIN32_EXECUTABLE", CM_NULLPTR);
-    this->SetPropertyDefault("MACOSX_BUNDLE", CM_NULLPTR);
-    this->SetPropertyDefault("MACOSX_RPATH", CM_NULLPTR);
-    this->SetPropertyDefault("BUILD_WITH_INSTALL_NAME_DIR", CM_NULLPTR);
-    this->SetPropertyDefault("C_CLANG_TIDY", CM_NULLPTR);
-    this->SetPropertyDefault("C_COMPILER_LAUNCHER", CM_NULLPTR);
-    this->SetPropertyDefault("C_CPPLINT", CM_NULLPTR);
-    this->SetPropertyDefault("C_INCLUDE_WHAT_YOU_USE", CM_NULLPTR);
-    this->SetPropertyDefault("LINK_WHAT_YOU_USE", CM_NULLPTR);
-    this->SetPropertyDefault("C_STANDARD", CM_NULLPTR);
-    this->SetPropertyDefault("C_STANDARD_REQUIRED", CM_NULLPTR);
-    this->SetPropertyDefault("C_EXTENSIONS", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_CLANG_TIDY", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_COMPILER_LAUNCHER", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_CPPLINT", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_INCLUDE_WHAT_YOU_USE", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_STANDARD", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_STANDARD_REQUIRED", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_EXTENSIONS", CM_NULLPTR);
-    this->SetPropertyDefault("CUDA_STANDARD", CM_NULLPTR);
-    this->SetPropertyDefault("CUDA_STANDARD_REQUIRED", CM_NULLPTR);
-    this->SetPropertyDefault("CUDA_EXTENSIONS", CM_NULLPTR);
-    this->SetPropertyDefault("LINK_SEARCH_START_STATIC", CM_NULLPTR);
-    this->SetPropertyDefault("LINK_SEARCH_END_STATIC", CM_NULLPTR);
-  }
-
-  if (this->GetType() != cmStateEnums::UTILITY) {
-    this->SetPropertyDefault("NO_SYSTEM_FROM_IMPORTED", CM_NULLPTR);
+    this->SetPropertyDefault("ARCHIVE_OUTPUT_DIRECTORY", nullptr);
+    this->SetPropertyDefault("LIBRARY_OUTPUT_DIRECTORY", nullptr);
+    this->SetPropertyDefault("RUNTIME_OUTPUT_DIRECTORY", nullptr);
+    this->SetPropertyDefault("PDB_OUTPUT_DIRECTORY", nullptr);
+    this->SetPropertyDefault("COMPILE_PDB_OUTPUT_DIRECTORY", nullptr);
+    this->SetPropertyDefault("Fortran_FORMAT", nullptr);
+    this->SetPropertyDefault("Fortran_MODULE_DIRECTORY", nullptr);
+    this->SetPropertyDefault("GNUtoMS", nullptr);
+    this->SetPropertyDefault("OSX_ARCHITECTURES", nullptr);
+    this->SetPropertyDefault("IOS_INSTALL_COMBINED", nullptr);
+    this->SetPropertyDefault("AUTOMOC", nullptr);
+    this->SetPropertyDefault("AUTOUIC", nullptr);
+    this->SetPropertyDefault("AUTORCC", nullptr);
+    this->SetPropertyDefault("AUTOMOC_COMPILER_PREDEFINES", nullptr);
+    this->SetPropertyDefault("AUTOMOC_DEPEND_FILTERS", nullptr);
+    this->SetPropertyDefault("AUTOMOC_MACRO_NAMES", nullptr);
+    this->SetPropertyDefault("AUTOMOC_MOC_OPTIONS", nullptr);
+    this->SetPropertyDefault("AUTOUIC_OPTIONS", nullptr);
+    this->SetPropertyDefault("AUTOUIC_SEARCH_PATHS", nullptr);
+    this->SetPropertyDefault("AUTORCC_OPTIONS", nullptr);
+    this->SetPropertyDefault("LINK_DEPENDS_NO_SHARED", nullptr);
+    this->SetPropertyDefault("LINK_INTERFACE_LIBRARIES", nullptr);
+    this->SetPropertyDefault("WIN32_EXECUTABLE", nullptr);
+    this->SetPropertyDefault("MACOSX_BUNDLE", nullptr);
+    this->SetPropertyDefault("MACOSX_RPATH", nullptr);
+    this->SetPropertyDefault("NO_SYSTEM_FROM_IMPORTED", nullptr);
+    this->SetPropertyDefault("BUILD_WITH_INSTALL_NAME_DIR", nullptr);
+    this->SetPropertyDefault("C_CLANG_TIDY", nullptr);
+    this->SetPropertyDefault("C_COMPILER_LAUNCHER", nullptr);
+    this->SetPropertyDefault("C_CPPLINT", nullptr);
+    this->SetPropertyDefault("C_CPPCHECK", nullptr);
+    this->SetPropertyDefault("C_INCLUDE_WHAT_YOU_USE", nullptr);
+    this->SetPropertyDefault("LINK_WHAT_YOU_USE", nullptr);
+    this->SetPropertyDefault("C_STANDARD", nullptr);
+    this->SetPropertyDefault("C_STANDARD_REQUIRED", nullptr);
+    this->SetPropertyDefault("C_EXTENSIONS", nullptr);
+    this->SetPropertyDefault("CXX_CLANG_TIDY", nullptr);
+    this->SetPropertyDefault("CXX_COMPILER_LAUNCHER", nullptr);
+    this->SetPropertyDefault("CXX_CPPLINT", nullptr);
+    this->SetPropertyDefault("CXX_CPPCHECK", nullptr);
+    this->SetPropertyDefault("CXX_INCLUDE_WHAT_YOU_USE", nullptr);
+    this->SetPropertyDefault("CXX_STANDARD", nullptr);
+    this->SetPropertyDefault("CXX_STANDARD_REQUIRED", nullptr);
+    this->SetPropertyDefault("CXX_EXTENSIONS", nullptr);
+    this->SetPropertyDefault("CUDA_STANDARD", nullptr);
+    this->SetPropertyDefault("CUDA_STANDARD_REQUIRED", nullptr);
+    this->SetPropertyDefault("CUDA_EXTENSIONS", nullptr);
+    this->SetPropertyDefault("CUDA_COMPILER_LAUNCHER", nullptr);
+    this->SetPropertyDefault("LINK_SEARCH_START_STATIC", nullptr);
+    this->SetPropertyDefault("LINK_SEARCH_END_STATIC", nullptr);
   }
 
   // Collect the set of configuration types.
@@ -295,11 +294,10 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
       "ARCHIVE_OUTPUT_DIRECTORY_",     "LIBRARY_OUTPUT_DIRECTORY_",
       "RUNTIME_OUTPUT_DIRECTORY_",     "PDB_OUTPUT_DIRECTORY_",
       "COMPILE_PDB_OUTPUT_DIRECTORY_", "MAP_IMPORTED_CONFIG_",
-      "INTERPROCEDURAL_OPTIMIZATION_", CM_NULLPTR
+      "INTERPROCEDURAL_OPTIMIZATION_", nullptr
     };
-    for (std::vector<std::string>::iterator ci = configNames.begin();
-         ci != configNames.end(); ++ci) {
-      std::string configUpper = cmSystemTools::UpperCase(*ci);
+    for (std::string const& configName : configNames) {
+      std::string configUpper = cmSystemTools::UpperCase(configName);
       for (const char** p = configProps; *p; ++p) {
         // Interface libraries have no output locations, so honor only
         // the configuration map.
@@ -309,7 +307,7 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
         }
         std::string property = *p;
         property += configUpper;
-        this->SetPropertyDefault(property, CM_NULLPTR);
+        this->SetPropertyDefault(property, nullptr);
       }
 
       // Initialize per-configuration name postfix property from the
@@ -319,9 +317,9 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
       // property directly.
       if (this->TargetTypeValue != cmStateEnums::EXECUTABLE &&
           this->TargetTypeValue != cmStateEnums::INTERFACE_LIBRARY) {
-        std::string property = cmSystemTools::UpperCase(*ci);
+        std::string property = cmSystemTools::UpperCase(configName);
         property += "_POSTFIX";
-        this->SetPropertyDefault(property, CM_NULLPTR);
+        this->SetPropertyDefault(property, nullptr);
       }
     }
   }
@@ -365,16 +363,16 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
 
   if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
       this->GetType() != cmStateEnums::UTILITY) {
-    this->SetPropertyDefault("C_VISIBILITY_PRESET", CM_NULLPTR);
-    this->SetPropertyDefault("CXX_VISIBILITY_PRESET", CM_NULLPTR);
-    this->SetPropertyDefault("CUDA_VISIBILITY_PRESET", CM_NULLPTR);
-    this->SetPropertyDefault("VISIBILITY_INLINES_HIDDEN", CM_NULLPTR);
+    this->SetPropertyDefault("C_VISIBILITY_PRESET", nullptr);
+    this->SetPropertyDefault("CXX_VISIBILITY_PRESET", nullptr);
+    this->SetPropertyDefault("CUDA_VISIBILITY_PRESET", nullptr);
+    this->SetPropertyDefault("VISIBILITY_INLINES_HIDDEN", nullptr);
   }
 
   if (this->TargetTypeValue == cmStateEnums::EXECUTABLE) {
-    this->SetPropertyDefault("ANDROID_GUI", CM_NULLPTR);
-    this->SetPropertyDefault("CROSSCOMPILING_EMULATOR", CM_NULLPTR);
-    this->SetPropertyDefault("ENABLE_EXPORTS", CM_NULLPTR);
+    this->SetPropertyDefault("ANDROID_GUI", nullptr);
+    this->SetPropertyDefault("CROSSCOMPILING_EMULATOR", nullptr);
+    this->SetPropertyDefault("ENABLE_EXPORTS", nullptr);
   }
   if (this->TargetTypeValue == cmStateEnums::SHARED_LIBRARY ||
       this->TargetTypeValue == cmStateEnums::MODULE_LIBRARY) {
@@ -382,12 +380,12 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
   }
   if (this->TargetTypeValue == cmStateEnums::SHARED_LIBRARY ||
       this->TargetTypeValue == cmStateEnums::EXECUTABLE) {
-    this->SetPropertyDefault("WINDOWS_EXPORT_ALL_SYMBOLS", CM_NULLPTR);
+    this->SetPropertyDefault("WINDOWS_EXPORT_ALL_SYMBOLS", nullptr);
   }
 
   if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
       this->GetType() != cmStateEnums::UTILITY) {
-    this->SetPropertyDefault("POSITION_INDEPENDENT_CODE", CM_NULLPTR);
+    this->SetPropertyDefault("POSITION_INDEPENDENT_CODE", nullptr);
   }
 
   // Record current policies for later use.
@@ -403,8 +401,8 @@ cmTarget::cmTarget(std::string const& name, cmStateEnums::TargetType type,
 
   if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
       this->GetType() != cmStateEnums::UTILITY) {
-    this->SetPropertyDefault("JOB_POOL_COMPILE", CM_NULLPTR);
-    this->SetPropertyDefault("JOB_POOL_LINK", CM_NULLPTR);
+    this->SetPropertyDefault("JOB_POOL_COMPILE", nullptr);
+    this->SetPropertyDefault("JOB_POOL_LINK", nullptr);
   }
 }
 
@@ -427,7 +425,7 @@ cmListFileBacktrace const* cmTarget::GetUtilityBacktrace(
   std::map<std::string, cmListFileBacktrace>::const_iterator i =
     this->UtilityBacktraces.find(u);
   if (i == this->UtilityBacktraces.end()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   return &i->second;
@@ -479,9 +477,7 @@ void cmTarget::AddSources(std::vector<std::string> const& srcs)
 {
   std::string srcFiles;
   const char* sep = "";
-  for (std::vector<std::string>::const_iterator i = srcs.begin();
-       i != srcs.end(); ++i) {
-    std::string filename = *i;
+  for (auto filename : srcs) {
     const char* src = filename.c_str();
 
     if (!(src[0] == '$' && src[1] == '<')) {
@@ -545,7 +541,7 @@ cmSourceFile* cmTarget::AddSourceCMP0049(const std::string& s)
 {
   std::string src = this->ProcessSourceItemCMP0049(s);
   if (!s.empty() && src.empty()) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return this->AddSource(src);
 }
@@ -595,8 +591,9 @@ public:
   {
     std::vector<std::string> files;
     cmSystemTools::ExpandListArgument(entry, files);
-    std::vector<cmSourceFileLocation> locations(files.size());
-    std::transform(files.begin(), files.end(), locations.begin(),
+    std::vector<cmSourceFileLocation> locations;
+    locations.reserve(files.size());
+    std::transform(files.begin(), files.end(), std::back_inserter(locations),
                    CreateLocation(this->Needle.GetMakefile()));
 
     return std::find_if(locations.begin(), locations.end(),
@@ -616,7 +613,7 @@ cmSourceFile* cmTarget::AddSource(const std::string& src)
     this->Internal->SourceBacktraces.push_back(lfbt);
   }
   if (cmGeneratorExpression::Find(src) != std::string::npos) {
-    return CM_NULLPTR;
+    return nullptr;
   }
   return this->Makefile->GetOrCreateSource(src);
 }
@@ -710,12 +707,10 @@ void cmTarget::GetTllSignatureTraces(std::ostream& s, TLLSignature sig) const
   const char* sigString =
     (sig == cmTarget::KeywordTLLSignature ? "keyword" : "plain");
   s << "The uses of the " << sigString << " signature are here:\n";
-  typedef std::vector<std::pair<TLLSignature, cmListFileContext> > Container;
   cmOutputConverter converter(this->GetMakefile()->GetStateSnapshot());
-  for (Container::const_iterator it = this->TLLCommands.begin();
-       it != this->TLLCommands.end(); ++it) {
-    if (it->first == sig) {
-      cmListFileContext lfc = it->second;
+  for (auto const& cmd : this->TLLCommands) {
+    if (cmd.first == sig) {
+      cmListFileContext lfc = cmd.second;
       lfc.FilePath = converter.ConvertToRelativePath(
         this->Makefile->GetState()->GetSourceDirectory(), lfc.FilePath);
       s << " * " << lfc << std::endl;
@@ -1178,7 +1173,7 @@ const char* cmTarget::GetComputedProperty(
 
 const char* cmTarget::GetProperty(const std::string& prop) const
 {
-  static CM_UNORDERED_SET<std::string> specialProps;
+  static std::unordered_set<std::string> specialProps;
 #define MAKE_STATIC_PROP(PROP) static const std::string prop##PROP = #PROP
   MAKE_STATIC_PROP(LINK_LIBRARIES);
   MAKE_STATIC_PROP(TYPE);
@@ -1210,7 +1205,7 @@ const char* cmTarget::GetProperty(const std::string& prop) const
   if (specialProps.count(prop)) {
     if (prop == propLINK_LIBRARIES) {
       if (this->Internal->LinkImplementationPropertyEntries.empty()) {
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       static std::string output;
@@ -1223,7 +1218,7 @@ const char* cmTarget::GetProperty(const std::string& prop) const
     }
     if (prop == propINCLUDE_DIRECTORIES) {
       if (this->Internal->IncludeDirectoriesEntries.empty()) {
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       static std::string output;
@@ -1232,7 +1227,7 @@ const char* cmTarget::GetProperty(const std::string& prop) const
     }
     if (prop == propCOMPILE_FEATURES) {
       if (this->Internal->CompileFeaturesEntries.empty()) {
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       static std::string output;
@@ -1241,7 +1236,7 @@ const char* cmTarget::GetProperty(const std::string& prop) const
     }
     if (prop == propCOMPILE_OPTIONS) {
       if (this->Internal->CompileOptionsEntries.empty()) {
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       static std::string output;
@@ -1250,7 +1245,7 @@ const char* cmTarget::GetProperty(const std::string& prop) const
     }
     if (prop == propCOMPILE_DEFINITIONS) {
       if (this->Internal->CompileDefinitionsEntries.empty()) {
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       static std::string output;
@@ -1259,7 +1254,7 @@ const char* cmTarget::GetProperty(const std::string& prop) const
     }
     if (prop == propMANUALLY_ADDED_DEPENDENCIES) {
       if (this->Utilities.empty()) {
-        return CM_NULLPTR;
+        return nullptr;
       }
 
       static std::string output;
@@ -1397,8 +1392,8 @@ std::string cmTarget::ImportedGetFullPath(
 
   std::string result;
 
-  const char* loc = CM_NULLPTR;
-  const char* imp = CM_NULLPTR;
+  const char* loc = nullptr;
+  const char* imp = nullptr;
   std::string suffix;
 
   if (this->GetType() != cmStateEnums::INTERFACE_LIBRARY &&
@@ -1535,7 +1530,7 @@ bool cmTarget::GetMappedConfig(std::string const& desired_config,
       }
       // If it was found, set the suffix.
       if (*loc || *imp) {
-        suffix = "";
+        suffix.clear();
       }
     } else {
       std::string mcUpper = cmSystemTools::UpperCase(*mci);
@@ -1582,7 +1577,7 @@ bool cmTarget::GetMappedConfig(std::string const& desired_config,
   // configurations and no exact match.
   if (!*loc && !*imp) {
     // The suffix computed above is not useful.
-    suffix = "";
+    suffix.clear();
 
     // Look for a configuration-less location.  This may be set by
     // manually-written code.
diff --git a/Source/cmTarget.h b/Source/cmTarget.h
index 1f00c0155..940e26c69 100644
--- a/Source/cmTarget.h
+++ b/Source/cmTarget.h
@@ -9,6 +9,7 @@
 #include <map>
 #include <set>
 #include <string>
+#include <unordered_map>
 #include <utility>
 #include <vector>
 
@@ -19,7 +20,6 @@
 #include "cmPropertyMap.h"
 #include "cmStateTypes.h"
 #include "cmTargetLinkLibraryType.h"
-#include "cm_unordered_map.hxx"
 
 class cmGlobalGenerator;
 class cmMakefile;
@@ -184,7 +184,7 @@ public:
    * name as would be specified to the ADD_EXECUTABLE or UTILITY_SOURCE
    * commands. It is not a full path nor does it have an extension.
    */
-  void AddUtility(const std::string& u, cmMakefile* makefile = CM_NULLPTR);
+  void AddUtility(const std::string& u, cmMakefile* makefile = nullptr);
   ///! Get the utilities used by this target
   std::set<std::string> const& GetUtilities() const { return this->Utilities; }
   cmListFileBacktrace const* GetUtilityBacktrace(const std::string& u) const;
@@ -297,7 +297,7 @@ private:
   std::vector<cmCustomCommand> PreBuildCommands;
   std::vector<cmCustomCommand> PreLinkCommands;
   std::vector<cmCustomCommand> PostBuildCommands;
-  std::vector<std::pair<TLLSignature, cmListFileContext> > TLLCommands;
+  std::vector<std::pair<TLLSignature, cmListFileContext>> TLLCommands;
   LinkLibraryVectorType OriginalLinkLibraries;
   cmMakefile* Makefile;
   cmTargetInternalPointer Internal;
@@ -323,7 +323,7 @@ private:
   cmListFileBacktrace Backtrace;
 };
 
-typedef CM_UNORDERED_MAP<std::string, cmTarget> cmTargets;
+typedef std::unordered_map<std::string, cmTarget> cmTargets;
 
 class cmTargetSet : public std::set<std::string>
 {
diff --git a/Source/cmTargetCompileDefinitionsCommand.cxx b/Source/cmTargetCompileDefinitionsCommand.cxx
index 008d1a210..d159d4178 100644
--- a/Source/cmTargetCompileDefinitionsCommand.cxx
+++ b/Source/cmTargetCompileDefinitionsCommand.cxx
@@ -41,12 +41,11 @@ std::string cmTargetCompileDefinitionsCommand::Join(
 {
   std::string defs;
   std::string sep;
-  for (std::vector<std::string>::const_iterator it = content.begin();
-       it != content.end(); ++it) {
-    if (cmHasLiteralPrefix(it->c_str(), "-D")) {
-      defs += sep + it->substr(2);
+  for (std::string const& it : content) {
+    if (cmHasLiteralPrefix(it.c_str(), "-D")) {
+      defs += sep + it.substr(2);
     } else {
-      defs += sep + *it;
+      defs += sep + it;
     }
     sep = ";";
   }
diff --git a/Source/cmTargetCompileDefinitionsCommand.h b/Source/cmTargetCompileDefinitionsCommand.h
index 11abf571c..f91045225 100644
--- a/Source/cmTargetCompileDefinitionsCommand.h
+++ b/Source/cmTargetCompileDefinitionsCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmTargetCompileDefinitionsCommand_h
 #define cmTargetCompileDefinitionsCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -20,26 +20,23 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
-  {
-    return new cmTargetCompileDefinitionsCommand;
-  }
+  cmCommand* Clone() override { return new cmTargetCompileDefinitionsCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
-  void HandleImportedTarget(const std::string& tgt) CM_OVERRIDE;
-  void HandleMissingTarget(const std::string& name) CM_OVERRIDE;
+  void HandleImportedTarget(const std::string& tgt) override;
+  void HandleMissingTarget(const std::string& name) override;
 
   bool HandleDirectContent(cmTarget* tgt,
                            const std::vector<std::string>& content,
-                           bool prepend, bool system) CM_OVERRIDE;
-  std::string Join(const std::vector<std::string>& content) CM_OVERRIDE;
+                           bool prepend, bool system) override;
+  std::string Join(const std::vector<std::string>& content) override;
 };
 
 #endif
diff --git a/Source/cmTargetCompileFeaturesCommand.cxx b/Source/cmTargetCompileFeaturesCommand.cxx
index 1b6c00887..722bbe56c 100644
--- a/Source/cmTargetCompileFeaturesCommand.cxx
+++ b/Source/cmTargetCompileFeaturesCommand.cxx
@@ -45,10 +45,9 @@ std::string cmTargetCompileFeaturesCommand::Join(
 bool cmTargetCompileFeaturesCommand::HandleDirectContent(
   cmTarget* tgt, const std::vector<std::string>& content, bool, bool)
 {
-  for (std::vector<std::string>::const_iterator it = content.begin();
-       it != content.end(); ++it) {
+  for (std::string const& it : content) {
     std::string error;
-    if (!this->Makefile->AddRequiredTargetFeature(tgt, *it, &error)) {
+    if (!this->Makefile->AddRequiredTargetFeature(tgt, it, &error)) {
       this->SetError(error);
       return false;
     }
diff --git a/Source/cmTargetCompileFeaturesCommand.h b/Source/cmTargetCompileFeaturesCommand.h
index 990868004..444d26069 100644
--- a/Source/cmTargetCompileFeaturesCommand.h
+++ b/Source/cmTargetCompileFeaturesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmTargetCompileFeaturesCommand_h
 #define cmTargetCompileFeaturesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -16,19 +16,19 @@ class cmTarget;
 
 class cmTargetCompileFeaturesCommand : public cmTargetPropCommandBase
 {
-  cmCommand* Clone() CM_OVERRIDE { return new cmTargetCompileFeaturesCommand; }
+  cmCommand* Clone() override { return new cmTargetCompileFeaturesCommand; }
 
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
-  void HandleImportedTarget(const std::string& tgt) CM_OVERRIDE;
-  void HandleMissingTarget(const std::string& name) CM_OVERRIDE;
+  void HandleImportedTarget(const std::string& tgt) override;
+  void HandleMissingTarget(const std::string& name) override;
 
   bool HandleDirectContent(cmTarget* tgt,
                            const std::vector<std::string>& content,
-                           bool prepend, bool system) CM_OVERRIDE;
-  std::string Join(const std::vector<std::string>& content) CM_OVERRIDE;
+                           bool prepend, bool system) override;
+  std::string Join(const std::vector<std::string>& content) override;
 };
 
 #endif
diff --git a/Source/cmTargetCompileOptionsCommand.h b/Source/cmTargetCompileOptionsCommand.h
index b5408f7cb..3fab238f2 100644
--- a/Source/cmTargetCompileOptionsCommand.h
+++ b/Source/cmTargetCompileOptionsCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmTargetCompileOptionsCommand_h
 #define cmTargetCompileOptionsCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -20,23 +20,23 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmTargetCompileOptionsCommand; }
+  cmCommand* Clone() override { return new cmTargetCompileOptionsCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
-  void HandleImportedTarget(const std::string& tgt) CM_OVERRIDE;
-  void HandleMissingTarget(const std::string& name) CM_OVERRIDE;
+  void HandleImportedTarget(const std::string& tgt) override;
+  void HandleMissingTarget(const std::string& name) override;
 
   bool HandleDirectContent(cmTarget* tgt,
                            const std::vector<std::string>& content,
-                           bool prepend, bool system) CM_OVERRIDE;
-  std::string Join(const std::vector<std::string>& content) CM_OVERRIDE;
+                           bool prepend, bool system) override;
+  std::string Join(const std::vector<std::string>& content) override;
 };
 
 #endif
diff --git a/Source/cmTargetIncludeDirectoriesCommand.cxx b/Source/cmTargetIncludeDirectoriesCommand.cxx
index 65a31490f..4646c7ee1 100644
--- a/Source/cmTargetIncludeDirectoriesCommand.cxx
+++ b/Source/cmTargetIncludeDirectoriesCommand.cxx
@@ -47,13 +47,12 @@ std::string cmTargetIncludeDirectoriesCommand::Join(
   std::string sep;
   std::string prefix =
     this->Makefile->GetCurrentSourceDirectory() + std::string("/");
-  for (std::vector<std::string>::const_iterator it = content.begin();
-       it != content.end(); ++it) {
-    if (cmSystemTools::FileIsFullPath(it->c_str()) ||
-        cmGeneratorExpression::Find(*it) == 0) {
-      dirs += sep + *it;
+  for (std::string const& it : content) {
+    if (cmSystemTools::FileIsFullPath(it.c_str()) ||
+        cmGeneratorExpression::Find(it) == 0) {
+      dirs += sep + it;
     } else {
-      dirs += sep + prefix + *it;
+      dirs += sep + prefix + it;
     }
     sep = ";";
   }
@@ -70,13 +69,12 @@ bool cmTargetIncludeDirectoriesCommand::HandleDirectContent(
     std::string prefix =
       this->Makefile->GetCurrentSourceDirectory() + std::string("/");
     std::set<std::string> sdirs;
-    for (std::vector<std::string>::const_iterator it = content.begin();
-         it != content.end(); ++it) {
-      if (cmSystemTools::FileIsFullPath(it->c_str()) ||
-          cmGeneratorExpression::Find(*it) == 0) {
-        sdirs.insert(*it);
+    for (std::string const& it : content) {
+      if (cmSystemTools::FileIsFullPath(it.c_str()) ||
+          cmGeneratorExpression::Find(it) == 0) {
+        sdirs.insert(it);
       } else {
-        sdirs.insert(prefix + *it);
+        sdirs.insert(prefix + it);
       }
     }
     tgt->AddSystemIncludeDirectories(sdirs);
diff --git a/Source/cmTargetIncludeDirectoriesCommand.h b/Source/cmTargetIncludeDirectoriesCommand.h
index 374a867dc..27a2f437a 100644
--- a/Source/cmTargetIncludeDirectoriesCommand.h
+++ b/Source/cmTargetIncludeDirectoriesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmTargetIncludeDirectoriesCommand_h
 #define cmTargetIncludeDirectoriesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -20,30 +20,27 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE
-  {
-    return new cmTargetIncludeDirectoriesCommand;
-  }
+  cmCommand* Clone() override { return new cmTargetIncludeDirectoriesCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
-  void HandleImportedTarget(const std::string& tgt) CM_OVERRIDE;
-  void HandleMissingTarget(const std::string& name) CM_OVERRIDE;
+  void HandleImportedTarget(const std::string& tgt) override;
+  void HandleMissingTarget(const std::string& name) override;
 
   bool HandleDirectContent(cmTarget* tgt,
                            const std::vector<std::string>& content,
-                           bool prepend, bool system) CM_OVERRIDE;
+                           bool prepend, bool system) override;
   void HandleInterfaceContent(cmTarget* tgt,
                               const std::vector<std::string>& content,
-                              bool prepend, bool system) CM_OVERRIDE;
+                              bool prepend, bool system) override;
 
-  std::string Join(const std::vector<std::string>& content) CM_OVERRIDE;
+  std::string Join(const std::vector<std::string>& content) override;
 };
 
 #endif
diff --git a/Source/cmTargetLinkLibrariesCommand.cxx b/Source/cmTargetLinkLibrariesCommand.cxx
index e17303645..dda0464de 100644
--- a/Source/cmTargetLinkLibrariesCommand.cxx
+++ b/Source/cmTargetLinkLibrariesCommand.cxx
@@ -95,7 +95,7 @@ bool cmTargetLinkLibrariesCommand::InitialPass(
 
   if (this->Target->GetType() == cmStateEnums::UTILITY) {
     std::ostringstream e;
-    const char* modal = CM_NULLPTR;
+    const char* modal = nullptr;
     cmake::MessageType messageType = cmake::AUTHOR_WARNING;
     switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0039)) {
       case cmPolicies::WARN:
@@ -311,7 +311,7 @@ bool cmTargetLinkLibrariesCommand::HandleLibrary(const std::string& lib,
   if (!this->Target->PushTLLCommandTrace(
         sig, this->Makefile->GetExecutionContext())) {
     std::ostringstream e;
-    const char* modal = CM_NULLPTR;
+    const char* modal = nullptr;
     cmake::MessageType messageType = cmake::AUTHOR_WARNING;
     switch (this->Makefile->GetPolicyStatus(cmPolicies::CMP0023)) {
       case cmPolicies::WARN:
@@ -366,6 +366,7 @@ bool cmTargetLinkLibrariesCommand::HandleLibrary(const std::string& lib,
 
       if (tgt && (tgt->GetType() != cmStateEnums::STATIC_LIBRARY) &&
           (tgt->GetType() != cmStateEnums::SHARED_LIBRARY) &&
+          (tgt->GetType() != cmStateEnums::UNKNOWN_LIBRARY) &&
           (tgt->GetType() != cmStateEnums::INTERFACE_LIBRARY) &&
           !tgt->IsExecutableWithExports()) {
         std::ostringstream e;
@@ -428,10 +429,9 @@ bool cmTargetLinkLibrariesCommand::HandleLibrary(const std::string& lib,
   // Include this library in the link interface for the target.
   if (llt == DEBUG_LibraryType || llt == GENERAL_LibraryType) {
     // Put in the DEBUG configuration interfaces.
-    for (std::vector<std::string>::const_iterator i = debugConfigs.begin();
-         i != debugConfigs.end(); ++i) {
+    for (std::string const& dc : debugConfigs) {
       prop = "LINK_INTERFACE_LIBRARIES_";
-      prop += *i;
+      prop += dc;
       this->Target->AppendProperty(prop, lib.c_str());
     }
   }
@@ -441,10 +441,9 @@ bool cmTargetLinkLibrariesCommand::HandleLibrary(const std::string& lib,
 
     // Make sure the DEBUG configuration interfaces exist so that the
     // general one will not be used as a fall-back.
-    for (std::vector<std::string>::const_iterator i = debugConfigs.begin();
-         i != debugConfigs.end(); ++i) {
+    for (std::string const& dc : debugConfigs) {
       prop = "LINK_INTERFACE_LIBRARIES_";
-      prop += *i;
+      prop += dc;
       if (!this->Target->GetProperty(prop)) {
         this->Target->SetProperty(prop, "");
       }
diff --git a/Source/cmTargetLinkLibrariesCommand.h b/Source/cmTargetLinkLibrariesCommand.h
index 3fd20accd..f41af49d2 100644
--- a/Source/cmTargetLinkLibrariesCommand.h
+++ b/Source/cmTargetLinkLibrariesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmTargetLinkLibrariesCommand_h
 #define cmTargetLinkLibrariesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -27,14 +27,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmTargetLinkLibrariesCommand; }
+  cmCommand* Clone() override { return new cmTargetLinkLibrariesCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   void LinkLibraryTypeSpecifierWarning(int left, int right);
diff --git a/Source/cmTargetPropertyComputer.cxx b/Source/cmTargetPropertyComputer.cxx
index a57bc5aea..1d2520d4b 100644
--- a/Source/cmTargetPropertyComputer.cxx
+++ b/Source/cmTargetPropertyComputer.cxx
@@ -4,11 +4,11 @@
 #include "cmTargetPropertyComputer.h"
 
 #include <sstream>
+#include <unordered_set>
 
 #include "cmMessenger.h"
 #include "cmPolicies.h"
 #include "cmStateSnapshot.h"
-#include "cm_unordered_set.hxx"
 #include "cmake.h"
 
 bool cmTargetPropertyComputer::HandleLocationPropertyPolicy(
@@ -16,7 +16,7 @@ bool cmTargetPropertyComputer::HandleLocationPropertyPolicy(
   cmListFileBacktrace const& context)
 {
   std::ostringstream e;
-  const char* modal = CM_NULLPTR;
+  const char* modal = nullptr;
   cmake::MessageType messageType = cmake::AUTHOR_WARNING;
   switch (context.GetBottom().GetPolicy(cmPolicies::CMP0026)) {
     case cmPolicies::WARN:
@@ -49,7 +49,7 @@ bool cmTargetPropertyComputer::WhiteListedInterfaceProperty(
   if (cmHasLiteralPrefix(prop, "INTERFACE_")) {
     return true;
   }
-  static CM_UNORDERED_SET<std::string> builtIns;
+  static std::unordered_set<std::string> builtIns;
   if (builtIns.empty()) {
     builtIns.insert("COMPATIBLE_INTERFACE_BOOL");
     builtIns.insert("COMPATIBLE_INTERFACE_NUMBER_MAX");
@@ -66,12 +66,19 @@ bool cmTargetPropertyComputer::WhiteListedInterfaceProperty(
   }
 
   if (prop == "IMPORTED_CONFIGURATIONS" || prop == "IMPORTED_LIBNAME" ||
-      prop == "NO_SYSTEM_FROM_IMPORTED" ||
       cmHasLiteralPrefix(prop, "IMPORTED_LIBNAME_") ||
       cmHasLiteralPrefix(prop, "MAP_IMPORTED_CONFIG_")) {
     return true;
   }
 
+  // This property should not be allowed but was incorrectly added in
+  // CMake 3.8.  We can't remove it from the whitelist without breaking
+  // projects that try to set it.  One day we could warn about this, but
+  // for now silently accept it.
+  if (prop == "NO_SYSTEM_FROM_IMPORTED") {
+    return true;
+  }
+
   return false;
 }
 
diff --git a/Source/cmTargetPropertyComputer.h b/Source/cmTargetPropertyComputer.h
index 94688e313..97e4fba2c 100644
--- a/Source/cmTargetPropertyComputer.h
+++ b/Source/cmTargetPropertyComputer.h
@@ -26,12 +26,12 @@ public:
       return loc;
     }
     if (cmSystemTools::GetFatalErrorOccured()) {
-      return CM_NULLPTR;
+      return nullptr;
     }
     if (prop == "SOURCES") {
       return GetSources(tgt, messenger, context);
     }
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   static bool WhiteListedInterfaceProperty(const std::string& prop);
@@ -69,7 +69,7 @@ private:
         if (!tgt->IsImported() &&
             !HandleLocationPropertyPolicy(tgt->GetName(), messenger,
                                           context)) {
-          return CM_NULLPTR;
+          return nullptr;
         }
         return ComputeLocationForBuild(tgt);
       }
@@ -79,7 +79,7 @@ private:
         if (!tgt->IsImported() &&
             !HandleLocationPropertyPolicy(tgt->GetName(), messenger,
                                           context)) {
-          return CM_NULLPTR;
+          return nullptr;
         }
         const char* configName = prop.c_str() + 9;
         return ComputeLocation(tgt, configName);
@@ -93,13 +93,13 @@ private:
           if (!tgt->IsImported() &&
               !HandleLocationPropertyPolicy(tgt->GetName(), messenger,
                                             context)) {
-            return CM_NULLPTR;
+            return nullptr;
           }
           return ComputeLocation(tgt, configName);
         }
       }
     }
-    return CM_NULLPTR;
+    return nullptr;
   }
 
   template <typename Target>
diff --git a/Source/cmTargetSourcesCommand.h b/Source/cmTargetSourcesCommand.h
index 09ba72915..0639e980e 100644
--- a/Source/cmTargetSourcesCommand.h
+++ b/Source/cmTargetSourcesCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmTargetSourcesCommand_h
 #define cmTargetSourcesCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -20,24 +20,24 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmTargetSourcesCommand; }
+  cmCommand* Clone() override { return new cmTargetSourcesCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
-  void HandleImportedTarget(const std::string& tgt) CM_OVERRIDE;
-  void HandleMissingTarget(const std::string& name) CM_OVERRIDE;
+  void HandleImportedTarget(const std::string& tgt) override;
+  void HandleMissingTarget(const std::string& name) override;
 
   bool HandleDirectContent(cmTarget* tgt,
                            const std::vector<std::string>& content,
-                           bool prepend, bool system) CM_OVERRIDE;
+                           bool prepend, bool system) override;
 
-  std::string Join(const std::vector<std::string>& content) CM_OVERRIDE;
+  std::string Join(const std::vector<std::string>& content) override;
 };
 
 #endif
diff --git a/Source/cmTestGenerator.cxx b/Source/cmTestGenerator.cxx
index be4b37847..78ca6bca3 100644
--- a/Source/cmTestGenerator.cxx
+++ b/Source/cmTestGenerator.cxx
@@ -2,7 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmTestGenerator.h"
 
-#include <map>
 #include <ostream>
 #include <utility>
 
@@ -23,7 +22,7 @@ cmTestGenerator::cmTestGenerator(
 {
   this->ActionsPerConfig = !test->GetOldStyle();
   this->TestGenerated = false;
-  this->LG = CM_NULLPTR;
+  this->LG = nullptr;
 }
 
 cmTestGenerator::~cmTestGenerator()
@@ -80,7 +79,7 @@ void cmTestGenerator::GenerateScriptForConfig(std::ostream& os,
 
     // Prepend with the emulator when cross compiling if required.
     const char* emulator = target->GetProperty("CROSSCOMPILING_EMULATOR");
-    if (emulator != CM_NULLPTR) {
+    if (emulator != nullptr) {
       std::vector<std::string> emulatorWithArgs;
       cmSystemTools::ExpandListArgument(emulator, emulatorWithArgs);
       std::string emulatorExe(emulatorWithArgs[0]);
@@ -114,10 +113,10 @@ void cmTestGenerator::GenerateScriptForConfig(std::ostream& os,
   if (!pm.empty()) {
     os << indent << "set_tests_properties(" << this->Test->GetName()
        << " PROPERTIES ";
-    for (cmPropertyMap::const_iterator i = pm.begin(); i != pm.end(); ++i) {
-      os << " " << i->first << " "
+    for (auto const& i : pm) {
+      os << " " << i.first << " "
          << cmOutputConverter::EscapeForCMake(
-              ge.Parse(i->second.GetValue())->Evaluate(this->LG, config));
+              ge.Parse(i.second.GetValue())->Evaluate(this->LG, config));
     }
     os << ")" << std::endl;
   }
@@ -154,15 +153,14 @@ void cmTestGenerator::GenerateOldStyle(std::ostream& fout, Indent indent)
     // Just double-quote all arguments so they are re-parsed
     // correctly by the test system.
     fout << " \"";
-    for (std::string::const_iterator c = argit->begin(); c != argit->end();
-         ++c) {
+    for (char c : *argit) {
       // Escape quotes within arguments.  We should escape
       // backslashes too but we cannot because it makes the result
       // inconsistent with previous behavior of this command.
-      if ((*c == '"')) {
+      if (c == '"') {
         fout << '\\';
       }
-      fout << *c;
+      fout << c;
     }
     fout << "\"";
   }
@@ -173,9 +171,9 @@ void cmTestGenerator::GenerateOldStyle(std::ostream& fout, Indent indent)
   if (!pm.empty()) {
     fout << indent << "set_tests_properties(" << this->Test->GetName()
          << " PROPERTIES ";
-    for (cmPropertyMap::const_iterator i = pm.begin(); i != pm.end(); ++i) {
-      fout << " " << i->first << " "
-           << cmOutputConverter::EscapeForCMake(i->second.GetValue());
+    for (auto const& i : pm) {
+      fout << " " << i.first << " "
+           << cmOutputConverter::EscapeForCMake(i.second.GetValue());
     }
     fout << ")" << std::endl;
   }
diff --git a/Source/cmTestGenerator.h b/Source/cmTestGenerator.h
index b2273050f..1ca61c210 100644
--- a/Source/cmTestGenerator.h
+++ b/Source/cmTestGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmTestGenerator_h
 #define cmTestGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmScriptGenerator.h"
 
@@ -26,17 +26,17 @@ public:
   cmTestGenerator(cmTest* test,
                   std::vector<std::string> const& configurations =
                     std::vector<std::string>());
-  ~cmTestGenerator() CM_OVERRIDE;
+  ~cmTestGenerator() override;
 
   void Compute(cmLocalGenerator* lg);
 
 protected:
-  void GenerateScriptConfigs(std::ostream& os, Indent indent) CM_OVERRIDE;
-  void GenerateScriptActions(std::ostream& os, Indent indent) CM_OVERRIDE;
+  void GenerateScriptConfigs(std::ostream& os, Indent indent) override;
+  void GenerateScriptActions(std::ostream& os, Indent indent) override;
   void GenerateScriptForConfig(std::ostream& os, const std::string& config,
-                               Indent indent) CM_OVERRIDE;
-  void GenerateScriptNoConfig(std::ostream& os, Indent indent) CM_OVERRIDE;
-  bool NeedsScriptNoConfig() const CM_OVERRIDE;
+                               Indent indent) override;
+  void GenerateScriptNoConfig(std::ostream& os, Indent indent) override;
+  bool NeedsScriptNoConfig() const override;
   void GenerateOldStyle(std::ostream& os, Indent indent);
 
   cmLocalGenerator* LG;
diff --git a/Source/cmTimestamp.cxx b/Source/cmTimestamp.cxx
index 4b9718847..9fb79d945 100644
--- a/Source/cmTimestamp.cxx
+++ b/Source/cmTimestamp.cxx
@@ -2,7 +2,6 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmTimestamp.h"
 
-#include "cmConfigure.h"
 #include <cstring>
 #include <sstream>
 #include <stdlib.h>
@@ -12,7 +11,7 @@
 std::string cmTimestamp::CurrentTime(const std::string& formatString,
                                      bool utcFlag)
 {
-  time_t currentTimeT = time(CM_NULLPTR);
+  time_t currentTimeT = time(nullptr);
   std::string source_date_epoch;
   cmSystemTools::GetEnv("SOURCE_DATE_EPOCH", source_date_epoch);
   if (!source_date_epoch.empty()) {
@@ -56,14 +55,14 @@ std::string cmTimestamp::CreateTimestampFromTimeT(time_t timeT,
   struct tm timeStruct;
   memset(&timeStruct, 0, sizeof(timeStruct));
 
-  struct tm* ptr = (struct tm*)CM_NULLPTR;
+  struct tm* ptr = nullptr;
   if (utcFlag) {
     ptr = gmtime(&timeT);
   } else {
     ptr = localtime(&timeT);
   }
 
-  if (ptr == CM_NULLPTR) {
+  if (ptr == nullptr) {
     return std::string();
   }
 
@@ -124,7 +123,9 @@ std::string cmTimestamp::AddTimestampComponent(char flag,
 
   switch (flag) {
     case 'a':
+    case 'A':
     case 'b':
+    case 'B':
     case 'd':
     case 'H':
     case 'I':
diff --git a/Source/cmTryCompileCommand.h b/Source/cmTryCompileCommand.h
index 483654822..fbe0d78b6 100644
--- a/Source/cmTryCompileCommand.h
+++ b/Source/cmTryCompileCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmTryCompileCommand_h
 #define cmTryCompileCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmTryCompileCommand; }
+  cmCommand* Clone() override { return new cmTryCompileCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmTryRunCommand.cxx b/Source/cmTryRunCommand.cxx
index 07e20e62f..dcaa4939e 100644
--- a/Source/cmTryRunCommand.cxx
+++ b/Source/cmTryRunCommand.cxx
@@ -33,11 +33,11 @@ bool cmTryRunCommand::InitialPass(std::vector<std::string> const& argv,
   // build an arg list for TryCompile and extract the runArgs,
   std::vector<std::string> tryCompile;
 
-  this->CompileResultVariable = "";
-  this->RunResultVariable = "";
-  this->OutputVariable = "";
-  this->RunOutputVariable = "";
-  this->CompileOutputVariable = "";
+  this->CompileResultVariable.clear();
+  this->RunResultVariable.clear();
+  this->OutputVariable.clear();
+  this->RunOutputVariable.clear();
+  this->CompileOutputVariable.clear();
 
   std::string runArgs;
   unsigned int i;
@@ -125,9 +125,8 @@ bool cmTryRunCommand::InitialPass(std::vector<std::string> const& argv,
       std::string runOutputContents;
       if (this->Makefile->IsOn("CMAKE_CROSSCOMPILING") &&
           !this->Makefile->IsDefinitionSet("CMAKE_CROSSCOMPILING_EMULATOR")) {
-        this->DoNotRunExecutable(runArgs, argv[3], captureRunOutput
-                                   ? &runOutputContents
-                                   : CM_NULLPTR);
+        this->DoNotRunExecutable(
+          runArgs, argv[3], captureRunOutput ? &runOutputContents : nullptr);
       } else {
         this->RunExecutable(runArgs, &runOutputContents);
       }
@@ -189,7 +188,7 @@ void cmTryRunCommand::RunExecutable(const std::string& runArgs,
   }
   int timeout = 0;
   bool worked = cmSystemTools::RunSingleCommand(
-    finalCommand.c_str(), out, out, &retVal, CM_NULLPTR,
+    finalCommand.c_str(), out, out, &retVal, nullptr,
     cmSystemTools::OUTPUT_NONE, timeout);
   // set the run var
   char retChar[1000];
@@ -233,7 +232,7 @@ void cmTryRunCommand::DoNotRunExecutable(const std::string& runArgs,
     this->RunResultVariable + "__TRYRUN_OUTPUT";
   bool error = false;
 
-  if (this->Makefile->GetDefinition(this->RunResultVariable) == CM_NULLPTR) {
+  if (this->Makefile->GetDefinition(this->RunResultVariable) == nullptr) {
     // if the variables doesn't exist, create it with a helpful error text
     // and mark it as advanced
     std::string comment;
@@ -255,8 +254,8 @@ void cmTryRunCommand::DoNotRunExecutable(const std::string& runArgs,
   }
 
   // is the output from the executable used ?
-  if (out != CM_NULLPTR) {
-    if (this->Makefile->GetDefinition(internalRunOutputName) == CM_NULLPTR) {
+  if (out != nullptr) {
+    if (this->Makefile->GetDefinition(internalRunOutputName) == nullptr) {
       // if the variables doesn't exist, create it with a helpful error text
       // and mark it as advanced
       std::string comment;
@@ -304,7 +303,7 @@ void cmTryRunCommand::DoNotRunExecutable(const std::string& runArgs,
       comment += " to\n"
                  "   the exit code (in many cases 0 for success), otherwise "
                  "enter \"FAILED_TO_RUN\".\n";
-      if (out != CM_NULLPTR) {
+      if (out != nullptr) {
         comment += internalRunOutputName;
         comment +=
           "\n   contains the text the executable "
@@ -335,7 +334,7 @@ void cmTryRunCommand::DoNotRunExecutable(const std::string& runArgs,
            << this->Makefile->GetDefinition(this->RunResultVariable)
            << "\"\n     CACHE STRING \"Result from TRY_RUN\" FORCE)\n\n";
 
-      if (out != CM_NULLPTR) {
+      if (out != nullptr) {
         file << "set( " << internalRunOutputName << " \n     \""
              << this->Makefile->GetDefinition(internalRunOutputName)
              << "\"\n     CACHE STRING \"Output from TRY_RUN\" FORCE)\n\n";
@@ -348,7 +347,7 @@ void cmTryRunCommand::DoNotRunExecutable(const std::string& runArgs,
                                "please set the following cache variables "
                                "appropriately:\n";
     errorMessage += "   " + this->RunResultVariable + " (advanced)\n";
-    if (out != CM_NULLPTR) {
+    if (out != nullptr) {
       errorMessage += "   " + internalRunOutputName + " (advanced)\n";
     }
     errorMessage += detailsString;
@@ -356,7 +355,7 @@ void cmTryRunCommand::DoNotRunExecutable(const std::string& runArgs,
     return;
   }
 
-  if (out != CM_NULLPTR) {
+  if (out != nullptr) {
     (*out) = this->Makefile->GetDefinition(internalRunOutputName);
   }
 }
diff --git a/Source/cmTryRunCommand.h b/Source/cmTryRunCommand.h
index c27b026ad..b632ef580 100644
--- a/Source/cmTryRunCommand.h
+++ b/Source/cmTryRunCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmTryRunCommand_h
 #define cmTryRunCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -24,14 +24,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmTryRunCommand; }
+  cmCommand* Clone() override { return new cmTryRunCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   void RunExecutable(const std::string& runArgs,
diff --git a/Source/cmUnexpectedCommand.h b/Source/cmUnexpectedCommand.h
index 995d8a5d6..7154881a4 100644
--- a/Source/cmUnexpectedCommand.h
+++ b/Source/cmUnexpectedCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmUnexpectedCommand_h
 #define cmUnexpectedCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -21,13 +21,13 @@ public:
   {
   }
 
-  cmCommand* Clone() CM_OVERRIDE
+  cmCommand* Clone() override
   {
     return new cmUnexpectedCommand(this->Name, this->Error);
   }
 
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 private:
   std::string Name;
diff --git a/Source/cmUnsetCommand.cxx b/Source/cmUnsetCommand.cxx
index 31525ba4a..18bbdd748 100644
--- a/Source/cmUnsetCommand.cxx
+++ b/Source/cmUnsetCommand.cxx
@@ -46,7 +46,7 @@ bool cmUnsetCommand::InitialPass(std::vector<std::string> const& args,
   }
   // unset(VAR PARENT_SCOPE)
   if ((args.size() == 2) && (args[1] == "PARENT_SCOPE")) {
-    this->Makefile->RaiseScope(variable, CM_NULLPTR);
+    this->Makefile->RaiseScope(variable, nullptr);
     return true;
   }
   // ERROR: second argument isn't CACHE or PARENT_SCOPE
diff --git a/Source/cmUnsetCommand.h b/Source/cmUnsetCommand.h
index 2a1f3f0a6..4e1208a45 100644
--- a/Source/cmUnsetCommand.h
+++ b/Source/cmUnsetCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmUnsetCommand_h
 #define cmUnsetCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -23,14 +23,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmUnsetCommand; }
+  cmCommand* Clone() override { return new cmUnsetCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmUseMangledMesaCommand.cxx b/Source/cmUseMangledMesaCommand.cxx
index 07095b137..c04a68327 100644
--- a/Source/cmUseMangledMesaCommand.cxx
+++ b/Source/cmUseMangledMesaCommand.cxx
@@ -38,11 +38,10 @@ bool cmUseMangledMesaCommand::InitialPass(std::vector<std::string> const& args,
     return false;
   }
   cmSystemTools::MakeDirectory(destDir);
-  for (std::vector<std::string>::iterator i = files.begin(); i != files.end();
-       ++i) {
+  for (std::string const& f : files) {
     std::string path = inputDir;
     path += "/";
-    path += *i;
+    path += f;
     this->CopyAndFullPathMesaHeader(path.c_str(), destDir);
   }
 
diff --git a/Source/cmUseMangledMesaCommand.h b/Source/cmUseMangledMesaCommand.h
index 511882989..78f86167b 100644
--- a/Source/cmUseMangledMesaCommand.h
+++ b/Source/cmUseMangledMesaCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmUseMangledMesaCommand_h
 #define cmUseMangledMesaCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -15,9 +15,9 @@ class cmExecutionStatus;
 class cmUseMangledMesaCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmUseMangledMesaCommand; }
+  cmCommand* Clone() override { return new cmUseMangledMesaCommand; }
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
 protected:
   void CopyAndFullPathMesaHeader(const char* source, const char* outdir);
diff --git a/Source/cmUtilitySourceCommand.cxx b/Source/cmUtilitySourceCommand.cxx
index eabd7ef31..0ce437c1a 100644
--- a/Source/cmUtilitySourceCommand.cxx
+++ b/Source/cmUtilitySourceCommand.cxx
@@ -33,7 +33,7 @@ bool cmUtilitySourceCommand::InitialPass(std::vector<std::string> const& args,
 
   bool haveCacheValue = false;
   if (this->Makefile->IsOn("CMAKE_CROSSCOMPILING")) {
-    haveCacheValue = (cacheValue != CM_NULLPTR);
+    haveCacheValue = (cacheValue != nullptr);
     if (!haveCacheValue) {
       std::string msg = "UTILITY_SOURCE is used in cross compiling mode for ";
       msg += cacheEntry;
@@ -45,7 +45,7 @@ bool cmUtilitySourceCommand::InitialPass(std::vector<std::string> const& args,
   } else {
     cmState* state = this->Makefile->GetState();
     haveCacheValue =
-      (cacheValue && (strstr(cacheValue, "(IntDir)") == CM_NULLPTR ||
+      (cacheValue && (strstr(cacheValue, "(IntDir)") == nullptr ||
                       (intDir && strcmp(intDir, "$(IntDir)") == 0)) &&
        (state->GetCacheMajorVersion() != 0 &&
         state->GetCacheMinorVersion() != 0));
diff --git a/Source/cmUtilitySourceCommand.h b/Source/cmUtilitySourceCommand.h
index a95b48d6a..165eceff6 100644
--- a/Source/cmUtilitySourceCommand.h
+++ b/Source/cmUtilitySourceCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmUtilitySourceCommand_h
 #define cmUtilitySourceCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -15,9 +15,9 @@ class cmExecutionStatus;
 class cmUtilitySourceCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmUtilitySourceCommand; }
+  cmCommand* Clone() override { return new cmUtilitySourceCommand; }
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmVS10CLFlagTable.h b/Source/cmVS10CLFlagTable.h
index dbd760ed1..df4d58c03 100644
--- a/Source/cmVS10CLFlagTable.h
+++ b/Source/cmVS10CLFlagTable.h
@@ -70,7 +70,8 @@ static cmVS7FlagTable cmVS10CLFlagTable[] = {
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
   { "PrecompiledHeader", "Yu", "Use", "Use",
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
-  { "PrecompiledHeader", "", "Not Using Precompiled Headers", "NotUsing", 0 },
+  { "PrecompiledHeader", "Y-", "Not Using Precompiled Headers", "NotUsing",
+    0 },
 
   { "AssemblerOutput", "", "No Listing", "NoListing", 0 },
   { "AssemblerOutput", "FA", "Assembly-Only Listing", "AssemblyCode", 0 },
diff --git a/Source/cmVS10CSharpFlagTable.h b/Source/cmVS10CSharpFlagTable.h
index 493ec2b12..18d587c50 100644
--- a/Source/cmVS10CSharpFlagTable.h
+++ b/Source/cmVS10CSharpFlagTable.h
@@ -25,7 +25,8 @@ static cmVS7FlagTable cmVS10CSharpFlagTable[] = {
   { "ApplicationIcon", "win32icon", "", "",
     cmIDEFlagTable::UserValueRequired },
 
-  { "Win32Manifest", "win32manifest:", "", "true", 0 },
+  { "ApplicationManifest", "win32manifest:", "", "",
+    cmIDEFlagTable::UserValueRequired },
 
   { "NoWin32Manifest", "nowin32manifest", "", "true", 0 },
 
diff --git a/Source/cmVS10LinkFlagTable.h b/Source/cmVS10LinkFlagTable.h
index c30ea9a66..6a0313a2f 100644
--- a/Source/cmVS10LinkFlagTable.h
+++ b/Source/cmVS10LinkFlagTable.h
@@ -29,6 +29,8 @@ static cmVS7FlagTable cmVS10LinkFlagTable[] = {
   { "CreateHotPatchableImage", "FUNCTIONPADMIN:16", "Itanium Image Only",
     "ItaniumImage", 0 },
 
+  // correct flags for uac should be /MANIFESTUAC, but some projects already
+  // use this bug to access uac field, so keep these for compatibility
   { "UACExecutionLevel", "level='asInvoker'", "asInvoker", "AsInvoker", 0 },
   { "UACExecutionLevel", "level='highestAvailable'", "highestAvailable",
     "HighestAvailable", 0 },
@@ -123,8 +125,12 @@ static cmVS7FlagTable cmVS10LinkFlagTable[] = {
   { "GenerateManifest", "MANIFEST:NO", "", "false", 0 },
   { "GenerateManifest", "MANIFEST", "", "true", 0 },
   { "AllowIsolation", "ALLOWISOLATION:NO", "", "false", 0 },
+
+  // correct flags for uac should be /MANIFESTUAC, but some projects already
+  // use this bug to access uac field, so keep these for compatibility
   { "UACUIAccess", "uiAccess='false'", "", "false", 0 },
   { "UACUIAccess", "uiAccess='true'", "", "true", 0 },
+
   { "GenerateDebugInformation", "DEBUG", "", "true",
     cmVS7FlagTable::CaseInsensitive },
   { "MapExports", "MAPINFO:EXPORTS", "", "true", 0 },
@@ -162,11 +168,8 @@ static cmVS7FlagTable cmVS10LinkFlagTable[] = {
   { "LinkDLL", "DLL", "", "true", 0 },
 
   // Bool Properties With Argument
-  { "EnableUAC", "MANIFESTUAC:NO", "", "false", 0 },
-  { "EnableUAC", "MANIFESTUAC:", "", "true",
-    cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
-  { "UACUIAccess", "MANIFESTUAC:", "Enable User Account Control (UAC)", "",
-    cmVS7FlagTable::UserValueRequired },
+  { "EnableUAC", "MANIFESTUAC:", "", "",
+    cmVS7FlagTable::UserValueRequired | cmVS7FlagTable::SpaceAppendable },
   { "GenerateMapFile", "MAP", "", "true",
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
   { "MapFileName", "MAP:", "Generate Map File", "",
diff --git a/Source/cmVS11CLFlagTable.h b/Source/cmVS11CLFlagTable.h
index 75317093f..d156938e1 100644
--- a/Source/cmVS11CLFlagTable.h
+++ b/Source/cmVS11CLFlagTable.h
@@ -74,7 +74,8 @@ static cmVS7FlagTable cmVS11CLFlagTable[] = {
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
   { "PrecompiledHeader", "Yu", "Use", "Use",
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
-  { "PrecompiledHeader", "", "Not Using Precompiled Headers", "NotUsing", 0 },
+  { "PrecompiledHeader", "Y-", "Not Using Precompiled Headers", "NotUsing",
+    0 },
 
   { "AssemblerOutput", "", "No Listing", "NoListing", 0 },
   { "AssemblerOutput", "FA", "Assembly-Only Listing", "AssemblyCode", 0 },
diff --git a/Source/cmVS11CSharpFlagTable.h b/Source/cmVS11CSharpFlagTable.h
index 71870b698..e3ba83c2c 100644
--- a/Source/cmVS11CSharpFlagTable.h
+++ b/Source/cmVS11CSharpFlagTable.h
@@ -25,7 +25,8 @@ static cmVS7FlagTable cmVS11CSharpFlagTable[] = {
   { "ApplicationIcon", "win32icon", "", "",
     cmIDEFlagTable::UserValueRequired },
 
-  { "Win32Manifest", "win32manifest:", "", "true", 0 },
+  { "ApplicationManifest", "win32manifest:", "", "",
+    cmIDEFlagTable::UserValueRequired },
 
   { "NoWin32Manifest", "nowin32manifest", "", "true", 0 },
 
diff --git a/Source/cmVS11LinkFlagTable.h b/Source/cmVS11LinkFlagTable.h
index 1b3a046f6..24ba8fded 100644
--- a/Source/cmVS11LinkFlagTable.h
+++ b/Source/cmVS11LinkFlagTable.h
@@ -29,6 +29,8 @@ static cmVS7FlagTable cmVS11LinkFlagTable[] = {
   { "CreateHotPatchableImage", "FUNCTIONPADMIN:16", "Itanium Image Only",
     "ItaniumImage", 0 },
 
+  // correct flags for uac should be /MANIFESTUAC, but some projects already
+  // use this bug to access uac field, so keep these for compatibility
   { "UACExecutionLevel", "level='asInvoker'", "asInvoker", "AsInvoker", 0 },
   { "UACExecutionLevel", "level='highestAvailable'", "highestAvailable",
     "HighestAvailable", 0 },
@@ -135,8 +137,12 @@ static cmVS7FlagTable cmVS11LinkFlagTable[] = {
   { "GenerateManifest", "MANIFEST:NO", "", "false", 0 },
   { "GenerateManifest", "MANIFEST", "", "true", 0 },
   { "AllowIsolation", "ALLOWISOLATION:NO", "", "false", 0 },
+
+  // correct flags for uac should be /MANIFESTUAC, but some projects already
+  // use this bug to access uac field, so keep these for compatibility
   { "UACUIAccess", "uiAccess='false'", "", "false", 0 },
   { "UACUIAccess", "uiAccess='true'", "", "true", 0 },
+
   { "ManifestEmbed", "manifest:embed", "", "true", 0 },
   { "GenerateDebugInformation", "DEBUG", "", "true",
     cmVS7FlagTable::CaseInsensitive },
@@ -179,11 +185,8 @@ static cmVS7FlagTable cmVS11LinkFlagTable[] = {
   { "LinkDLL", "DLL", "", "true", 0 },
 
   // Bool Properties With Argument
-  { "EnableUAC", "MANIFESTUAC:NO", "", "false", 0 },
-  { "EnableUAC", "MANIFESTUAC:", "", "true",
-    cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
-  { "UACUIAccess", "MANIFESTUAC:", "Enable User Account Control (UAC)", "",
-    cmVS7FlagTable::UserValueRequired },
+  { "EnableUAC", "MANIFESTUAC:", "", "",
+    cmVS7FlagTable::UserValueRequired | cmVS7FlagTable::SpaceAppendable },
   { "GenerateMapFile", "MAP", "", "true",
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
   { "MapFileName", "MAP:", "Generate Map File", "",
diff --git a/Source/cmVS12CLFlagTable.h b/Source/cmVS12CLFlagTable.h
index 9515c91b8..a4f251808 100644
--- a/Source/cmVS12CLFlagTable.h
+++ b/Source/cmVS12CLFlagTable.h
@@ -78,7 +78,8 @@ static cmVS7FlagTable cmVS12CLFlagTable[] = {
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
   { "PrecompiledHeader", "Yu", "Use", "Use",
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
-  { "PrecompiledHeader", "", "Not Using Precompiled Headers", "NotUsing", 0 },
+  { "PrecompiledHeader", "Y-", "Not Using Precompiled Headers", "NotUsing",
+    0 },
 
   { "AssemblerOutput", "", "No Listing", "NoListing", 0 },
   { "AssemblerOutput", "FA", "Assembly-Only Listing", "AssemblyCode", 0 },
diff --git a/Source/cmVS12CSharpFlagTable.h b/Source/cmVS12CSharpFlagTable.h
index f98b1840d..f8db63670 100644
--- a/Source/cmVS12CSharpFlagTable.h
+++ b/Source/cmVS12CSharpFlagTable.h
@@ -25,7 +25,8 @@ static cmVS7FlagTable cmVS12CSharpFlagTable[] = {
   { "ApplicationIcon", "win32icon", "", "",
     cmIDEFlagTable::UserValueRequired },
 
-  { "Win32Manifest", "win32manifest:", "", "true", 0 },
+  { "ApplicationManifest", "win32manifest:", "", "",
+    cmIDEFlagTable::UserValueRequired },
 
   { "NoWin32Manifest", "nowin32manifest", "", "true", 0 },
 
diff --git a/Source/cmVS12LinkFlagTable.h b/Source/cmVS12LinkFlagTable.h
index 168c34c22..fc667c359 100644
--- a/Source/cmVS12LinkFlagTable.h
+++ b/Source/cmVS12LinkFlagTable.h
@@ -29,6 +29,8 @@ static cmVS7FlagTable cmVS12LinkFlagTable[] = {
   { "CreateHotPatchableImage", "FUNCTIONPADMIN:16", "Itanium Image Only",
     "ItaniumImage", 0 },
 
+  // correct flags for uac should be /MANIFESTUAC, but some projects already
+  // use this bug to access uac field, so keep these for compatibility
   { "UACExecutionLevel", "level='asInvoker'", "asInvoker", "AsInvoker", 0 },
   { "UACExecutionLevel", "level='highestAvailable'", "highestAvailable",
     "HighestAvailable", 0 },
@@ -135,8 +137,12 @@ static cmVS7FlagTable cmVS12LinkFlagTable[] = {
   { "GenerateManifest", "MANIFEST:NO", "", "false", 0 },
   { "GenerateManifest", "MANIFEST", "", "true", 0 },
   { "AllowIsolation", "ALLOWISOLATION:NO", "", "false", 0 },
+
+  // correct flags for uac should be /MANIFESTUAC, but some projects already
+  // use this bug to access uac field, so keep these for compatibility
   { "UACUIAccess", "uiAccess='false'", "", "false", 0 },
   { "UACUIAccess", "uiAccess='true'", "", "true", 0 },
+
   { "ManifestEmbed", "manifest:embed", "", "true", 0 },
   { "GenerateDebugInformation", "DEBUG", "", "true",
     cmVS7FlagTable::CaseInsensitive },
@@ -179,11 +185,8 @@ static cmVS7FlagTable cmVS12LinkFlagTable[] = {
   { "LinkDLL", "DLL", "", "true", 0 },
 
   // Bool Properties With Argument
-  { "EnableUAC", "MANIFESTUAC:NO", "", "false", 0 },
-  { "EnableUAC", "MANIFESTUAC:", "", "true",
-    cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
-  { "UACUIAccess", "MANIFESTUAC:", "Enable User Account Control (UAC)", "",
-    cmVS7FlagTable::UserValueRequired },
+  { "EnableUAC", "MANIFESTUAC:", "", "",
+    cmVS7FlagTable::UserValueRequired | cmVS7FlagTable::SpaceAppendable },
   { "GenerateMapFile", "MAP", "", "true",
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
   { "MapFileName", "MAP:", "Generate Map File", "",
diff --git a/Source/cmVS140CLFlagTable.h b/Source/cmVS140CLFlagTable.h
index 60b437974..2b89042c8 100644
--- a/Source/cmVS140CLFlagTable.h
+++ b/Source/cmVS140CLFlagTable.h
@@ -80,7 +80,8 @@ static cmVS7FlagTable cmVS140CLFlagTable[] = {
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
   { "PrecompiledHeader", "Yu", "Use", "Use",
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
-  { "PrecompiledHeader", "", "Not Using Precompiled Headers", "NotUsing", 0 },
+  { "PrecompiledHeader", "Y-", "Not Using Precompiled Headers", "NotUsing",
+    0 },
 
   { "AssemblerOutput", "", "No Listing", "NoListing", 0 },
   { "AssemblerOutput", "FA", "Assembly-Only Listing", "AssemblyCode", 0 },
diff --git a/Source/cmVS140CSharpFlagTable.h b/Source/cmVS140CSharpFlagTable.h
index 256c35f70..055d5cba0 100644
--- a/Source/cmVS140CSharpFlagTable.h
+++ b/Source/cmVS140CSharpFlagTable.h
@@ -25,7 +25,8 @@ static cmVS7FlagTable cmVS140CSharpFlagTable[] = {
   { "ApplicationIcon", "win32icon", "", "",
     cmIDEFlagTable::UserValueRequired },
 
-  { "Win32Manifest", "win32manifest:", "", "true", 0 },
+  { "ApplicationManifest", "win32manifest:", "", "",
+    cmIDEFlagTable::UserValueRequired },
 
   { "NoWin32Manifest", "nowin32manifest", "", "true", 0 },
 
diff --git a/Source/cmVS140LinkFlagTable.h b/Source/cmVS140LinkFlagTable.h
index b9a4dc30a..7c9452abf 100644
--- a/Source/cmVS140LinkFlagTable.h
+++ b/Source/cmVS140LinkFlagTable.h
@@ -29,6 +29,8 @@ static cmVS7FlagTable cmVS140LinkFlagTable[] = {
   { "CreateHotPatchableImage", "FUNCTIONPADMIN:16", "Itanium Image Only",
     "ItaniumImage", 0 },
 
+  // correct flags for uac should be /MANIFESTUAC, but some projects already
+  // use this bug to access uac field, so keep these for compatibility
   { "UACExecutionLevel", "level='asInvoker'", "asInvoker", "AsInvoker", 0 },
   { "UACExecutionLevel", "level='highestAvailable'", "highestAvailable",
     "HighestAvailable", 0 },
@@ -148,8 +150,12 @@ static cmVS7FlagTable cmVS140LinkFlagTable[] = {
   { "GenerateManifest", "MANIFEST:NO", "", "false", 0 },
   { "GenerateManifest", "MANIFEST", "", "true", 0 },
   { "AllowIsolation", "ALLOWISOLATION:NO", "", "false", 0 },
+
+  // correct flags for uac should be /MANIFESTUAC, but some projects already
+  // use this bug to access uac field, so keep these for compatibility
   { "UACUIAccess", "uiAccess='false'", "", "false", 0 },
   { "UACUIAccess", "uiAccess='true'", "", "true", 0 },
+
   { "ManifestEmbed", "manifest:embed", "", "true", 0 },
   { "MapExports", "MAPINFO:EXPORTS", "", "true", 0 },
   { "AssemblyDebug", "ASSEMBLYDEBUG:DISABLE", "", "false", 0 },
@@ -190,11 +196,8 @@ static cmVS7FlagTable cmVS140LinkFlagTable[] = {
   { "LinkDLL", "DLL", "", "true", 0 },
 
   // Bool Properties With Argument
-  { "EnableUAC", "MANIFESTUAC:NO", "", "false", 0 },
-  { "EnableUAC", "MANIFESTUAC:", "", "true",
-    cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
-  { "UACUIAccess", "MANIFESTUAC:", "Enable User Account Control (UAC)", "",
-    cmVS7FlagTable::UserValueRequired },
+  { "EnableUAC", "MANIFESTUAC:", "", "",
+    cmVS7FlagTable::UserValueRequired | cmVS7FlagTable::SpaceAppendable },
   { "GenerateMapFile", "MAP", "", "true",
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
   { "MapFileName", "MAP:", "Generate Map File", "",
diff --git a/Source/cmVS141CLFlagTable.h b/Source/cmVS141CLFlagTable.h
index f751fc875..c780d469a 100644
--- a/Source/cmVS141CLFlagTable.h
+++ b/Source/cmVS141CLFlagTable.h
@@ -79,6 +79,7 @@ static cmVS7FlagTable cmVS141CLFlagTable[] = {
   { "FloatingPointModel", "fp:strict", "Strict", "Strict", 0 },
   { "FloatingPointModel", "fp:fast", "Fast", "Fast", 0 },
 
+  { "LanguageStandard", "std:c++17", "ISO C++17 Standard", "stdcpp17", 0 },
   { "LanguageStandard", "std:c++14", "ISO C++14 Standard", "stdcpp14", 0 },
   { "LanguageStandard", "std:c++latest", "ISO C++ Latest Draft Standard",
     "stdcpplatest", 0 },
@@ -87,7 +88,8 @@ static cmVS7FlagTable cmVS141CLFlagTable[] = {
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
   { "PrecompiledHeader", "Yu", "Use", "Use",
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
-  { "PrecompiledHeader", "", "Not Using Precompiled Headers", "NotUsing", 0 },
+  { "PrecompiledHeader", "Y-", "Not Using Precompiled Headers", "NotUsing",
+    0 },
 
   { "AssemblerOutput", "", "No Listing", "NoListing", 0 },
   { "AssemblerOutput", "FA", "Assembly-Only Listing", "AssemblyCode", 0 },
diff --git a/Source/cmVS141CSharpFlagTable.h b/Source/cmVS141CSharpFlagTable.h
index 85085817c..5de9bf33f 100644
--- a/Source/cmVS141CSharpFlagTable.h
+++ b/Source/cmVS141CSharpFlagTable.h
@@ -25,7 +25,8 @@ static cmVS7FlagTable cmVS141CSharpFlagTable[] = {
   { "ApplicationIcon", "win32icon", "", "",
     cmIDEFlagTable::UserValueRequired },
 
-  { "Win32Manifest", "win32manifest:", "", "true", 0 },
+  { "ApplicationManifest", "win32manifest:", "", "",
+    cmIDEFlagTable::UserValueRequired },
 
   { "NoWin32Manifest", "nowin32manifest", "", "true", 0 },
 
diff --git a/Source/cmVS141LinkFlagTable.h b/Source/cmVS141LinkFlagTable.h
index 8f0f1f42d..f159f7061 100644
--- a/Source/cmVS141LinkFlagTable.h
+++ b/Source/cmVS141LinkFlagTable.h
@@ -29,6 +29,8 @@ static cmVS7FlagTable cmVS141LinkFlagTable[] = {
   { "CreateHotPatchableImage", "FUNCTIONPADMIN:16", "Itanium Image Only",
     "ItaniumImage", 0 },
 
+  // correct flags for uac should be /MANIFESTUAC, but some projects already
+  // use this bug to access uac field, so keep these for compatibility
   { "UACExecutionLevel", "level='asInvoker'", "asInvoker", "AsInvoker", 0 },
   { "UACExecutionLevel", "level='highestAvailable'", "highestAvailable",
     "HighestAvailable", 0 },
@@ -87,6 +89,7 @@ static cmVS7FlagTable cmVS141LinkFlagTable[] = {
 
   { "TargetMachine", "", "Not Set", "NotSet", 0 },
   { "TargetMachine", "MACHINE:ARM", "MachineARM", "MachineARM", 0 },
+  { "TargetMachine", "MACHINE:ARM64", "MachineARM64", "MachineARM64", 0 },
   { "TargetMachine", "MACHINE:EBC", "MachineEBC", "MachineEBC", 0 },
   { "TargetMachine", "MACHINE:IA64", "MachineIA64", "MachineIA64", 0 },
   { "TargetMachine", "MACHINE:MIPS", "MachineMIPS", "MachineMIPS", 0 },
@@ -149,8 +152,12 @@ static cmVS7FlagTable cmVS141LinkFlagTable[] = {
   { "GenerateManifest", "MANIFEST:NO", "", "false", 0 },
   { "GenerateManifest", "MANIFEST", "", "true", 0 },
   { "AllowIsolation", "ALLOWISOLATION:NO", "", "false", 0 },
+
+  // correct flags for uac should be /MANIFESTUAC, but some projects already
+  // use this bug to access uac field, so keep these for compatibility
   { "UACUIAccess", "uiAccess='false'", "", "false", 0 },
   { "UACUIAccess", "uiAccess='true'", "", "true", 0 },
+
   { "ManifestEmbed", "manifest:embed", "", "true", 0 },
   { "MapExports", "MAPINFO:EXPORTS", "", "true", 0 },
   { "AssemblyDebug", "ASSEMBLYDEBUG:DISABLE", "", "false", 0 },
@@ -191,11 +198,8 @@ static cmVS7FlagTable cmVS141LinkFlagTable[] = {
   { "LinkDLL", "DLL", "", "true", 0 },
 
   // Bool Properties With Argument
-  { "EnableUAC", "MANIFESTUAC:NO", "", "false", 0 },
-  { "EnableUAC", "MANIFESTUAC:", "", "true",
-    cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
-  { "UACUIAccess", "MANIFESTUAC:", "Enable User Account Control (UAC)", "",
-    cmVS7FlagTable::UserValueRequired },
+  { "EnableUAC", "MANIFESTUAC:", "", "",
+    cmVS7FlagTable::UserValueRequired | cmVS7FlagTable::SpaceAppendable },
   { "GenerateMapFile", "MAP", "", "true",
     cmVS7FlagTable::UserValueIgnored | cmVS7FlagTable::Continue },
   { "MapFileName", "MAP:", "Generate Map File", "",
diff --git a/Source/cmVS14LibFlagTable.h b/Source/cmVS14LibFlagTable.h
index 7fa713893..be4652c68 100644
--- a/Source/cmVS14LibFlagTable.h
+++ b/Source/cmVS14LibFlagTable.h
@@ -11,6 +11,7 @@ static cmVS7FlagTable cmVS14LibFlagTable[] = {
     0 },
 
   { "TargetMachine", "MACHINE:ARM", "MachineARM", "MachineARM", 0 },
+  { "TargetMachine", "MACHINE:ARM64", "MachineARM64", "MachineARM64", 0 },
   { "TargetMachine", "MACHINE:EBC", "MachineEBC", "MachineEBC", 0 },
   { "TargetMachine", "MACHINE:IA64", "MachineIA64", "MachineIA64", 0 },
   { "TargetMachine", "MACHINE:MIPS", "MachineMIPS", "MachineMIPS", 0 },
diff --git a/Source/cmVSSetupHelper.cxx b/Source/cmVSSetupHelper.cxx
index 7168f266c..ea13649c2 100644
--- a/Source/cmVSSetupHelper.cxx
+++ b/Source/cmVSSetupHelper.cxx
@@ -1,7 +1,10 @@
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmVSSetupHelper.h"
+
 #include "cmSystemTools.h"
+#include "cmsys/Encoding.hxx"
+#include "cmsys/FStream.hxx"
 
 #ifndef VSSetupConstants
 #define VSSetupConstants
@@ -41,14 +44,19 @@ const CLSID CLSID_SetupConfiguration = {
 /* clang-format on */
 #endif
 
-const WCHAR* VCToolsetComponent =
-  L"Microsoft.VisualStudio.Component.VC.Tools.x86.x64";
 const WCHAR* Win10SDKComponent =
   L"Microsoft.VisualStudio.Component.Windows10SDK";
 const WCHAR* Win81SDKComponent =
   L"Microsoft.VisualStudio.Component.Windows81SDK";
 const WCHAR* ComponentType = L"Component";
 
+std::string VSInstanceInfo::GetInstallLocation() const
+{
+  std::string loc = cmsys::Encoding::ToNarrow(this->VSInstallLocation);
+  cmSystemTools::ConvertToUnixSlashes(loc);
+  return loc;
+}
+
 cmVSSetupAPIHelper::cmVSSetupAPIHelper()
   : setupConfig(NULL)
   , setupConfig2(NULL)
@@ -90,11 +98,11 @@ bool cmVSSetupAPIHelper::IsWin81SDKInstalled()
 }
 
 bool cmVSSetupAPIHelper::CheckInstalledComponent(
-  SmartCOMPtr<ISetupPackageReference> package, bool& bVCToolset,
-  bool& bWin10SDK, bool& bWin81SDK)
+  SmartCOMPtr<ISetupPackageReference> package, bool& bWin10SDK,
+  bool& bWin81SDK)
 {
   bool ret = false;
-  bVCToolset = bWin10SDK = bWin81SDK = false;
+  bWin10SDK = bWin81SDK = false;
   SmartBSTR bstrId;
   if (FAILED(package->GetId(&bstrId))) {
     return ret;
@@ -107,11 +115,6 @@ bool cmVSSetupAPIHelper::CheckInstalledComponent(
 
   std::wstring id = std::wstring(bstrId);
   std::wstring type = std::wstring(bstrType);
-  if (id.compare(VCToolsetComponent) == 0 &&
-      type.compare(ComponentType) == 0) {
-    bVCToolset = true;
-    ret = true;
-  }
 
   // Checks for any version of Win10 SDK. The version is appended at the end of
   // the
@@ -135,7 +138,6 @@ bool cmVSSetupAPIHelper::CheckInstalledComponent(
 bool cmVSSetupAPIHelper::GetVSInstanceInfo(
   SmartCOMPtr<ISetupInstance2> pInstance, VSInstanceInfo& vsInstanceInfo)
 {
-  bool isVCToolSetInstalled = false;
   if (pInstance == NULL)
     return false;
 
@@ -174,6 +176,23 @@ bool cmVSSetupAPIHelper::GetVSInstanceInfo(
     }
   }
 
+  // Check if a compiler is installed with this instance.
+  {
+    std::string const vcRoot = vsInstanceInfo.GetInstallLocation();
+    std::string const vcToolsVersionFile =
+      vcRoot + "/VC/Auxiliary/Build/Microsoft.VCToolsVersion.default.txt";
+    std::string vcToolsVersion;
+    cmsys::ifstream fin(vcToolsVersionFile.c_str());
+    if (!fin || !cmSystemTools::GetLineFromStream(fin, vcToolsVersion)) {
+      return false;
+    }
+    vcToolsVersion = cmSystemTools::TrimWhitespace(vcToolsVersion);
+    std::string const vcToolsDir = vcRoot + "/VC/Tools/MSVC/" + vcToolsVersion;
+    if (!cmSystemTools::FileIsDirectory(vcToolsDir)) {
+      return false;
+    }
+  }
+
   // Reboot may have been required before the product package was registered
   // (last).
   if ((eRegistered & state) == eRegistered) {
@@ -199,12 +218,11 @@ bool cmVSSetupAPIHelper::GetVSInstanceInfo(
           package == NULL)
         continue;
 
-      bool vcToolsetInstalled = false, win10SDKInstalled = false,
-           win81SDkInstalled = false;
-      bool ret = CheckInstalledComponent(package, vcToolsetInstalled,
-                                         win10SDKInstalled, win81SDkInstalled);
+      bool win10SDKInstalled = false;
+      bool win81SDkInstalled = false;
+      bool ret =
+        CheckInstalledComponent(package, win10SDKInstalled, win81SDkInstalled);
       if (ret) {
-        isVCToolSetInstalled |= vcToolsetInstalled;
         vsInstanceInfo.IsWin10SDKInstalled |= win10SDKInstalled;
         vsInstanceInfo.IsWin81SDKInstalled |= win81SDkInstalled;
       }
@@ -213,18 +231,16 @@ bool cmVSSetupAPIHelper::GetVSInstanceInfo(
     SafeArrayDestroy(lpsaPackages);
   }
 
-  return isVCToolSetInstalled;
+  return true;
 }
 
 bool cmVSSetupAPIHelper::GetVSInstanceInfo(std::string& vsInstallLocation)
 {
-  vsInstallLocation = "";
+  vsInstallLocation.clear();
   bool isInstalled = this->EnumerateAndChooseVSInstance();
 
   if (isInstalled) {
-    std::string str(chosenInstanceInfo.VSInstallLocation.begin(),
-                    chosenInstanceInfo.VSInstallLocation.end());
-    vsInstallLocation = str;
+    vsInstallLocation = chosenInstanceInfo.GetInstallLocation();
   }
 
   return isInstalled;
@@ -281,9 +297,7 @@ bool cmVSSetupAPIHelper::EnumerateAndChooseVSInstance()
 
     if (isInstalled) {
       if (!envVSCommonToolsDir.empty()) {
-        std::string currentVSLocation(instanceInfo.VSInstallLocation.begin(),
-                                      instanceInfo.VSInstallLocation.end());
-        cmSystemTools::ConvertToUnixSlashes(currentVSLocation);
+        std::string currentVSLocation = instanceInfo.GetInstallLocation();
         currentVSLocation += "/Common7/Tools";
         if (cmSystemTools::ComparePath(currentVSLocation,
                                        envVSCommonToolsDir)) {
diff --git a/Source/cmVSSetupHelper.h b/Source/cmVSSetupHelper.h
index d2f514c63..74a7ec04a 100644
--- a/Source/cmVSSetupHelper.h
+++ b/Source/cmVSSetupHelper.h
@@ -116,6 +116,8 @@ struct VSInstanceInfo
     ullVersion = 0;
     IsWin10SDKInstalled = IsWin81SDKInstalled = false;
   }
+
+  std::string GetInstallLocation() const;
 };
 
 class cmVSSetupAPIHelper
@@ -134,8 +136,7 @@ private:
   bool GetVSInstanceInfo(SmartCOMPtr<ISetupInstance2> instance2,
                          VSInstanceInfo& vsInstanceInfo);
   bool CheckInstalledComponent(SmartCOMPtr<ISetupPackageReference> package,
-                               bool& bVCToolset, bool& bWin10SDK,
-                               bool& bWin81SDK);
+                               bool& bWin10SDK, bool& bWin81SDK);
   int ChooseVSInstance(const std::vector<VSInstanceInfo>& vecVSInstances);
   bool EnumerateAndChooseVSInstance();
 
diff --git a/Source/cmVariableRequiresCommand.h b/Source/cmVariableRequiresCommand.h
index 9808d5f0c..94970c584 100644
--- a/Source/cmVariableRequiresCommand.h
+++ b/Source/cmVariableRequiresCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmVariableRequiresCommand_h
 #define cmVariableRequiresCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -15,9 +15,9 @@ class cmExecutionStatus;
 class cmVariableRequiresCommand : public cmCommand
 {
 public:
-  cmCommand* Clone() CM_OVERRIDE { return new cmVariableRequiresCommand; }
+  cmCommand* Clone() override { return new cmVariableRequiresCommand; }
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmVariableWatch.cxx b/Source/cmVariableWatch.cxx
index 419e1a411..bd5d19c39 100644
--- a/Source/cmVariableWatch.cxx
+++ b/Source/cmVariableWatch.cxx
@@ -2,11 +2,9 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmVariableWatch.h"
 
-#include "cmAlgorithms.h"
-
-#include "cm_auto_ptr.hxx"
-#include <algorithm>
+#include <memory>
 #include <utility>
+#include <vector>
 
 static const char* const cmVariableWatchAccessStrings[] = {
   "READ_ACCESS",     "UNKNOWN_READ_ACCESS", "UNKNOWN_DEFINED_ACCESS",
@@ -25,37 +23,27 @@ cmVariableWatch::cmVariableWatch()
 {
 }
 
-template <typename C>
-void deleteAllSecond(typename C::value_type it)
-{
-  cmDeleteAll(it.second);
-}
-
 cmVariableWatch::~cmVariableWatch()
 {
-  std::for_each(this->WatchMap.begin(), this->WatchMap.end(),
-                deleteAllSecond<cmVariableWatch::StringToVectorOfPairs>);
 }
 
 bool cmVariableWatch::AddWatch(const std::string& variable, WatchMethod method,
                                void* client_data /*=0*/,
                                DeleteData delete_data /*=0*/)
 {
-  CM_AUTO_PTR<cmVariableWatch::Pair> p(new cmVariableWatch::Pair);
+  auto p = std::make_shared<cmVariableWatch::Pair>();
   p->Method = method;
   p->ClientData = client_data;
   p->DeleteDataCall = delete_data;
-  cmVariableWatch::VectorOfPairs* vp = &this->WatchMap[variable];
-  cmVariableWatch::VectorOfPairs::size_type cc;
-  for (cc = 0; cc < vp->size(); cc++) {
-    cmVariableWatch::Pair* pair = (*vp)[cc];
+  cmVariableWatch::VectorOfPairs& vp = this->WatchMap[variable];
+  for (auto& pair : vp) {
     if (pair->Method == method && client_data &&
         client_data == pair->ClientData) {
       // Callback already exists
       return false;
     }
   }
-  vp->push_back(p.release());
+  vp.push_back(std::move(p));
   return true;
 }
 
@@ -72,7 +60,6 @@ void cmVariableWatch::RemoveWatch(const std::string& variable,
         // If client_data is NULL, we want to disconnect all watches against
         // the given method; otherwise match ClientData as well.
         (!client_data || (client_data == (*it)->ClientData))) {
-      delete *it;
       vp->erase(it);
       return;
     }
@@ -86,10 +73,17 @@ bool cmVariableWatch::VariableAccessed(const std::string& variable,
   cmVariableWatch::StringToVectorOfPairs::const_iterator mit =
     this->WatchMap.find(variable);
   if (mit != this->WatchMap.end()) {
-    const cmVariableWatch::VectorOfPairs* vp = &mit->second;
-    cmVariableWatch::VectorOfPairs::const_iterator it;
-    for (it = vp->begin(); it != vp->end(); it++) {
-      (*it)->Method(variable, access_type, (*it)->ClientData, newValue, mf);
+    // The strategy here is to copy the list of callbacks, and ignore
+    // new callbacks that existing ones may add.
+    std::vector<std::weak_ptr<Pair>> vp(mit->second.begin(),
+                                        mit->second.end());
+    for (auto& weak_it : vp) {
+      // In the case where a callback was removed, the weak_ptr will not be
+      // lockable, and so this ensures we don't attempt to call into freed
+      // memory
+      if (auto it = weak_it.lock()) {
+        it->Method(variable, access_type, it->ClientData, newValue, mf);
+      }
     }
     return true;
   }
diff --git a/Source/cmVariableWatch.h b/Source/cmVariableWatch.h
index a575afe9d..27d1b12df 100644
--- a/Source/cmVariableWatch.h
+++ b/Source/cmVariableWatch.h
@@ -6,6 +6,7 @@
 #include "cmConfigure.h" // IWYU pragma: keep
 
 #include <map>
+#include <memory> // IWYU pragma: keep
 #include <string>
 #include <vector>
 
@@ -31,10 +32,9 @@ public:
    * Add watch to the variable
    */
   bool AddWatch(const std::string& variable, WatchMethod method,
-                void* client_data = CM_NULLPTR,
-                DeleteData delete_data = CM_NULLPTR);
+                void* client_data = nullptr, DeleteData delete_data = nullptr);
   void RemoveWatch(const std::string& variable, WatchMethod method,
-                   void* client_data = CM_NULLPTR);
+                   void* client_data = nullptr);
 
   /**
    * This method is called when variable is accessed
@@ -67,9 +67,9 @@ protected:
     void* ClientData;
     DeleteData DeleteDataCall;
     Pair()
-      : Method(CM_NULLPTR)
-      , ClientData(CM_NULLPTR)
-      , DeleteDataCall(CM_NULLPTR)
+      : Method(nullptr)
+      , ClientData(nullptr)
+      , DeleteDataCall(nullptr)
     {
     }
     ~Pair()
@@ -80,7 +80,7 @@ protected:
     }
   };
 
-  typedef std::vector<Pair*> VectorOfPairs;
+  typedef std::vector<std::shared_ptr<Pair>> VectorOfPairs;
   typedef std::map<std::string, VectorOfPairs> StringToVectorOfPairs;
 
   StringToVectorOfPairs WatchMap;
diff --git a/Source/cmVariableWatchCommand.cxx b/Source/cmVariableWatchCommand.cxx
index 281850ecc..9930086f4 100644
--- a/Source/cmVariableWatchCommand.cxx
+++ b/Source/cmVariableWatchCommand.cxx
@@ -91,11 +91,9 @@ cmVariableWatchCommand::cmVariableWatchCommand()
 
 cmVariableWatchCommand::~cmVariableWatchCommand()
 {
-  std::set<std::string>::const_iterator it;
-  for (it = this->WatchedVariables.begin(); it != this->WatchedVariables.end();
-       ++it) {
+  for (std::string const& wv : this->WatchedVariables) {
     this->Makefile->GetCMakeInstance()->GetVariableWatch()->RemoveWatch(
-      *it, cmVariableWatchCommandVariableAccessed);
+      wv, cmVariableWatchCommandVariableAccessed);
   }
 }
 
diff --git a/Source/cmVariableWatchCommand.h b/Source/cmVariableWatchCommand.h
index 9f0439175..6a8115d74 100644
--- a/Source/cmVariableWatchCommand.h
+++ b/Source/cmVariableWatchCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmVariableWatchCommand_h
 #define cmVariableWatchCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <set>
 #include <string>
@@ -23,24 +23,24 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmVariableWatchCommand; }
+  cmCommand* Clone() override { return new cmVariableWatchCommand; }
 
   //! Default constructor
   cmVariableWatchCommand();
 
   //! Destructor.
-  ~cmVariableWatchCommand() CM_OVERRIDE;
+  ~cmVariableWatchCommand() override;
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 
   /** This command does not really have a final pass but it needs to
       stay alive since it owns variable watch callback information. */
-  bool HasFinalPass() const CM_OVERRIDE { return true; }
+  bool HasFinalPass() const override { return true; }
 
 protected:
   std::set<std::string> WatchedVariables;
diff --git a/Source/cmVisualStudio10TargetGenerator.cxx b/Source/cmVisualStudio10TargetGenerator.cxx
index dee153f6b..c61902ab6 100644
--- a/Source/cmVisualStudio10TargetGenerator.cxx
+++ b/Source/cmVisualStudio10TargetGenerator.cxx
@@ -15,7 +15,7 @@
 #include "cmVisualStudioGeneratorOptions.h"
 #include "windows.h"
 
-#include "cm_auto_ptr.hxx"
+#include <memory> // IWYU pragma: keep
 
 static std::string cmVS10EscapeXML(std::string arg)
 {
@@ -25,6 +25,12 @@ static std::string cmVS10EscapeXML(std::string arg)
   return arg;
 }
 
+static std::string cmVS10EscapeQuotes(std::string arg)
+{
+  cmSystemTools::ReplaceString(arg, "\"", "&quot;");
+  return arg;
+}
+
 static std::string cmVS10EscapeComment(std::string comment)
 {
   // MSBuild takes the CDATA of a <Message></Message> element and just
@@ -79,7 +85,7 @@ cmVisualStudio10TargetGenerator::cmVisualStudio10TargetGenerator(
   this->LocalGenerator =
     (cmLocalVisualStudio7Generator*)this->GeneratorTarget->GetLocalGenerator();
   this->Name = this->GeneratorTarget->GetName();
-  this->GUID = this->GlobalGenerator->GetGUID(this->Name.c_str());
+  this->GUID = this->GlobalGenerator->GetGUID(this->Name);
   this->Platform = gg->GetPlatformName();
   this->NsightTegra = gg->IsNsightTegra();
   for (int i = 0; i < 4; ++i) {
@@ -144,7 +150,7 @@ void cmVisualStudio10TargetGenerator::WritePlatformConfigTag(
   (*stream) << config << "|" << this->Platform;
   (*stream) << "'";
   // handle special case for 32 bit C# targets
-  if (csproj == this->ProjectType && this->Platform == "Win32") {
+  if (this->ProjectType == csproj && this->Platform == "Win32") {
     (*stream) << " Or ";
     (*stream) << "'$(Configuration)|$(Platform)'=='";
     (*stream) << config << "|x86";
@@ -292,7 +298,7 @@ void cmVisualStudio10TargetGenerator::Generate()
     this->WriteString("</PropertyGroup>\n", 1);
   }
 
-  if (csproj != this->ProjectType) {
+  if (this->ProjectType != csproj) {
     this->WriteProjectConfigurations();
   }
   this->WriteString("<PropertyGroup Label=\"Globals\">\n", 1);
@@ -309,7 +315,7 @@ void cmVisualStudio10TargetGenerator::Generate()
     this->GeneratorTarget->GetProperty("VS_GLOBAL_PROJECT_TYPES");
   if (vsProjectTypes) {
     std::string tagName = "ProjectTypes";
-    if (csproj == this->ProjectType) {
+    if (this->ProjectType == csproj) {
       tagName = "ProjectTypeGuids";
     }
     this->WriteString("", 2);
@@ -401,11 +407,11 @@ void cmVisualStudio10TargetGenerator::Generate()
       continue;
     std::string globalKey = keyIt->substr(strlen(prefix));
     // Skip invalid or separately-handled properties.
-    if (globalKey == "" || globalKey == "PROJECT_TYPES" ||
+    if (globalKey.empty() || globalKey == "PROJECT_TYPES" ||
         globalKey == "ROOTNAMESPACE" || globalKey == "KEYWORD") {
       continue;
     }
-    const char* value = this->GeneratorTarget->GetProperty(keyIt->c_str());
+    const char* value = this->GeneratorTarget->GetProperty(*keyIt);
     if (!value)
       continue;
     this->WriteString("<", 2);
@@ -463,7 +469,7 @@ void cmVisualStudio10TargetGenerator::Generate()
 
   this->WriteProjectConfigurationValues();
 
-  if (vcxproj == this->ProjectType) {
+  if (this->ProjectType == vcxproj) {
     this->WriteString("<Import Project=\"" VS10_CXX_PROPS "\" />\n", 1);
   }
   this->WriteString("<ImportGroup Label=\"ExtensionSettings\">\n", 1);
@@ -566,7 +572,7 @@ void cmVisualStudio10TargetGenerator::Generate()
     this->WriteString(import.c_str(), 2);
   }
   this->WriteString("</ImportGroup>\n", 1);
-  if (csproj == this->ProjectType) {
+  if (this->ProjectType == csproj) {
     for (std::vector<std::string>::const_iterator i =
            this->Configurations.begin();
          i != this->Configurations.end(); ++i) {
@@ -576,6 +582,18 @@ void cmVisualStudio10TargetGenerator::Generate()
       this->WriteEvents(*i);
       this->WriteString("</PropertyGroup>\n", 1);
     }
+    // make sure custom commands are executed before build (if necessary)
+    this->WriteString("<PropertyGroup>\n", 1);
+    this->WriteString("<BuildDependsOn>\n", 2);
+    for (std::set<std::string>::const_iterator i =
+           this->CSharpCustomCommandNames.begin();
+         i != this->CSharpCustomCommandNames.end(); ++i) {
+      this->WriteString(i->c_str(), 3);
+      (*this->BuildFileStream) << ";\n";
+    }
+    this->WriteString("$(BuildDependsOn)\n", 3);
+    this->WriteString("</BuildDependsOn>\n", 2);
+    this->WriteString("</PropertyGroup>\n", 1);
   }
   this->WriteString("</Project>", 0);
   // The groups are stored in a separate file for VS 10
@@ -596,7 +614,7 @@ void cmVisualStudio10TargetGenerator::WriteDotNetReferences()
        ++i) {
     if (i->first.find("VS_DOTNET_REFERENCE_") == 0) {
       std::string name = i->first.substr(20);
-      if (name != "") {
+      if (!name.empty()) {
         std::string path = i->second.GetValue();
         if (!cmsys::SystemTools::FileIsFullPath(path)) {
           path = std::string(this->GeneratorTarget->Target->GetMakefile()
@@ -624,7 +642,7 @@ void cmVisualStudio10TargetGenerator::WriteDotNetReferences()
         this->WriteDotNetReference(*ri, "");
       }
     }
-    for (std::vector<std::pair<std::string, std::string> >::const_iterator i =
+    for (std::vector<std::pair<std::string, std::string>>::const_iterator i =
            hintReferences.begin();
          i != hintReferences.end(); ++i) {
       this->WriteDotNetReference(i->first, i->second);
@@ -657,9 +675,39 @@ void cmVisualStudio10TargetGenerator::WriteDotNetReference(
     this->WriteString("<HintPath>", 3);
     (*this->BuildFileStream) << hint << "</HintPath>\n";
   }
+  this->WriteDotNetReferenceCustomTags(ref);
   this->WriteString("</Reference>\n", 2);
 }
 
+void cmVisualStudio10TargetGenerator::WriteDotNetReferenceCustomTags(
+  std::string const& ref)
+{
+
+  static const std::string refpropPrefix = "VS_DOTNET_REFERENCEPROP_";
+  static const std::string refpropInfix = "_TAG_";
+  const std::string refPropFullPrefix = refpropPrefix + ref + refpropInfix;
+  typedef std::map<std::string, std::string> CustomTags;
+  CustomTags tags;
+  cmPropertyMap const& props = this->GeneratorTarget->Target->GetProperties();
+  for (cmPropertyMap::const_iterator i = props.begin(); i != props.end();
+       ++i) {
+    if (i->first.find(refPropFullPrefix) == 0) {
+      std::string refTag = i->first.substr(refPropFullPrefix.length());
+      std::string refVal = i->second.GetValue();
+      if (!refTag.empty() && !refVal.empty()) {
+        tags[refTag] = refVal;
+      }
+    }
+  }
+  for (CustomTags::const_iterator tag = tags.begin(); tag != tags.end();
+       ++tag) {
+    this->WriteString("<", 3);
+    (*this->BuildFileStream) << tag->first << ">"
+                             << cmVS10EscapeXML(tag->second) << "</"
+                             << tag->first << ">\n";
+  }
+}
+
 void cmVisualStudio10TargetGenerator::WriteEmbeddedResourceGroup()
 {
   std::vector<cmSourceFile const*> resxObjs;
@@ -675,7 +723,7 @@ void cmVisualStudio10TargetGenerator::WriteEmbeddedResourceGroup()
       this->WriteString("<EmbeddedResource Include=\"", 2);
       this->ConvertToWindowsSlash(obj);
       bool useRelativePath = false;
-      if (csproj == this->ProjectType && this->InSourceBuild) {
+      if (this->ProjectType == csproj && this->InSourceBuild) {
         // If we do an in-source build and the resource file is in a
         // subdirectory
         // of the .csproj file, we have to use relative pathnames, otherwise
@@ -688,7 +736,7 @@ void cmVisualStudio10TargetGenerator::WriteEmbeddedResourceGroup()
       }
       (*this->BuildFileStream) << obj << "\">\n";
 
-      if (csproj != this->ProjectType) {
+      if (this->ProjectType != csproj) {
         this->WriteString("<DependentUpon>", 3);
         std::string hFileName = obj.substr(0, obj.find_last_of(".")) + ".h";
         (*this->BuildFileStream) << hFileName << "</DependentUpon>\n";
@@ -696,7 +744,7 @@ void cmVisualStudio10TargetGenerator::WriteEmbeddedResourceGroup()
         for (std::vector<std::string>::const_iterator i =
                this->Configurations.begin();
              i != this->Configurations.end(); ++i) {
-          this->WritePlatformConfigTag("LogicalName", i->c_str(), 3);
+          this->WritePlatformConfigTag("LogicalName", *i, 3);
           if (this->GeneratorTarget->GetProperty("VS_GLOBAL_ROOTNAMESPACE") ||
               // Handle variant of VS_GLOBAL_<variable> for RootNamespace.
               this->GeneratorTarget->GetProperty("VS_GLOBAL_RootNamespace")) {
@@ -758,7 +806,7 @@ void cmVisualStudio10TargetGenerator::WriteEmbeddedResourceGroup()
         for (cmPropertyMap::const_iterator p = props.begin(); p != props.end();
              ++p) {
           static const std::string propNamePrefix = "VS_CSHARP_";
-          if (p->first.find(propNamePrefix.c_str()) == 0) {
+          if (p->first.find(propNamePrefix) == 0) {
             std::string tagName = p->first.substr(propNamePrefix.length());
             if (!tagName.empty()) {
               std::string value = props.GetPropertyValue(p->first);
@@ -798,7 +846,7 @@ void cmVisualStudio10TargetGenerator::WriteXamlFilesGroup()
       }
 
       this->WriteSource(xamlType, *oi, ">\n");
-      if (csproj == this->ProjectType && !this->InSourceBuild) {
+      if (this->ProjectType == csproj && !this->InSourceBuild) {
         // add <Link> tag to written XAML source if necessary
         const std::string srcDir = this->Makefile->GetCurrentSourceDirectory();
         const std::string binDir = this->Makefile->GetCurrentBinaryDirectory();
@@ -914,10 +962,10 @@ void cmVisualStudio10TargetGenerator::WriteProjectConfigurationValues()
   for (std::vector<std::string>::const_iterator i =
          this->Configurations.begin();
        i != this->Configurations.end(); ++i) {
-    this->WritePlatformConfigTag("PropertyGroup", i->c_str(), 1,
+    this->WritePlatformConfigTag("PropertyGroup", *i, 1,
                                  " Label=\"Configuration\"", "\n");
 
-    if (csproj != this->ProjectType) {
+    if (this->ProjectType != csproj) {
       std::string configType = "<ConfigurationType>";
       if (const char* vsConfigurationType =
             this->GeneratorTarget->GetProperty("VS_CONFIGURATION_TYPE")) {
@@ -1038,8 +1086,7 @@ void cmVisualStudio10TargetGenerator::WriteMSToolConfigurationValuesManaged(
     this->WriteString("<DefineDebug>true</DefineDebug>\n", 2);
   }
 
-  std::string outDir =
-    this->GeneratorTarget->GetDirectory(config.c_str()) + "/";
+  std::string outDir = this->GeneratorTarget->GetDirectory(config) + "/";
   this->ConvertToWindowsSlash(outDir);
   this->WriteString("<OutputPath>", 2);
   (*this->BuildFileStream) << cmVS10EscapeXML(outDir) << "</OutputPath>\n";
@@ -1119,6 +1166,7 @@ void cmVisualStudio10TargetGenerator::WriteNsightTegraConfigurationValues(
 void cmVisualStudio10TargetGenerator::WriteCustomCommands()
 {
   this->SourcesVisited.clear();
+  this->CSharpCustomCommandNames.clear();
   std::vector<cmSourceFile const*> customCommands;
   this->GeneratorTarget->GetCustomCommands(customCommands, "");
   for (std::vector<cmSourceFile const*>::const_iterator si =
@@ -1140,9 +1188,14 @@ void cmVisualStudio10TargetGenerator::WriteCustomCommand(
       }
     }
     if (cmCustomCommand const* command = sf->GetCustomCommand()) {
-      this->WriteString("<ItemGroup>\n", 1);
+      // C# projects write their <Target> within WriteCustomRule()
+      if (this->ProjectType != csproj) {
+        this->WriteString("<ItemGroup>\n", 1);
+      }
       this->WriteCustomRule(sf, *command);
-      this->WriteString("</ItemGroup>\n", 1);
+      if (this->ProjectType != csproj) {
+        this->WriteString("</ItemGroup>\n", 1);
+      }
     }
   }
 }
@@ -1177,8 +1230,20 @@ void cmVisualStudio10TargetGenerator::WriteCustomRule(
   }
   cmLocalVisualStudio7Generator* lg = this->LocalGenerator;
 
-  this->WriteSource("CustomBuild", source, ">\n");
-
+  if (this->ProjectType != csproj) {
+    this->WriteSource("CustomBuild", source, ">\n");
+  } else {
+    this->WriteString("<ItemGroup>\n", 1);
+    std::string link;
+    this->GetCSharpSourceLink(source, link);
+    this->WriteSource("None", source, ">\n");
+    if (!link.empty()) {
+      this->WriteString("<Link>", 3);
+      (*this->BuildFileStream) << link << "</Link>\n";
+    }
+    this->WriteString("</None>\n", 2);
+    this->WriteString("</ItemGroup>\n", 1);
+  }
   for (std::vector<std::string>::const_iterator i =
          this->Configurations.begin();
        i != this->Configurations.end(); ++i) {
@@ -1186,41 +1251,90 @@ void cmVisualStudio10TargetGenerator::WriteCustomRule(
     std::string comment = lg->ConstructComment(ccg);
     comment = cmVS10EscapeComment(comment);
     std::string script = cmVS10EscapeXML(lg->ConstructScript(ccg));
-    this->WritePlatformConfigTag("Message", i->c_str(), 3);
-    (*this->BuildFileStream) << cmVS10EscapeXML(comment) << "</Message>\n";
-    this->WritePlatformConfigTag("Command", i->c_str(), 3);
-    (*this->BuildFileStream) << script << "</Command>\n";
-    this->WritePlatformConfigTag("AdditionalInputs", i->c_str(), 3);
-
-    (*this->BuildFileStream) << cmVS10EscapeXML(source->GetFullPath());
+    // input files for custom command
+    std::stringstream inputs;
+    inputs << cmVS10EscapeXML(source->GetFullPath());
     for (std::vector<std::string>::const_iterator d = ccg.GetDepends().begin();
          d != ccg.GetDepends().end(); ++d) {
       std::string dep;
-      if (this->LocalGenerator->GetRealDependency(d->c_str(), i->c_str(),
-                                                  dep)) {
+      if (this->LocalGenerator->GetRealDependency(*d, *i, dep)) {
         this->ConvertToWindowsSlash(dep);
-        (*this->BuildFileStream) << ";" << cmVS10EscapeXML(dep);
+        inputs << ";" << cmVS10EscapeXML(dep);
       }
     }
-    (*this->BuildFileStream) << ";%(AdditionalInputs)</AdditionalInputs>\n";
-    this->WritePlatformConfigTag("Outputs", i->c_str(), 3);
+    // output files for custom command
+    std::stringstream outputs;
     const char* sep = "";
     for (std::vector<std::string>::const_iterator o = ccg.GetOutputs().begin();
          o != ccg.GetOutputs().end(); ++o) {
       std::string out = *o;
       this->ConvertToWindowsSlash(out);
-      (*this->BuildFileStream) << sep << cmVS10EscapeXML(out);
+      outputs << sep << cmVS10EscapeXML(out);
       sep = ";";
     }
-    (*this->BuildFileStream) << "</Outputs>\n";
-    if (this->LocalGenerator->GetVersion() >
-        cmGlobalVisualStudioGenerator::VS10) {
-      // VS >= 11 let us turn off linking of custom command outputs.
-      this->WritePlatformConfigTag("LinkObjects", i->c_str(), 3);
-      (*this->BuildFileStream) << "false</LinkObjects>\n";
+    if (this->ProjectType == csproj) {
+      std::string name = "CustomCommand_" + *i + "_" +
+        cmSystemTools::ComputeStringMD5(sourcePath);
+      std::string inputs_s = inputs.str();
+      std::string outputs_s = outputs.str();
+      comment = cmVS10EscapeQuotes(comment);
+      script = cmVS10EscapeQuotes(script);
+      inputs_s = cmVS10EscapeQuotes(inputs_s);
+      outputs_s = cmVS10EscapeQuotes(outputs_s);
+      this->WriteCustomRuleCSharp(*i, name, script, inputs_s, outputs_s,
+                                  comment);
+    } else {
+      this->WriteCustomRuleCpp(*i, script, inputs.str(), outputs.str(),
+                               comment);
     }
   }
-  this->WriteString("</CustomBuild>\n", 2);
+  if (this->ProjectType != csproj) {
+    this->WriteString("</CustomBuild>\n", 2);
+  }
+}
+
+void cmVisualStudio10TargetGenerator::WriteCustomRuleCpp(
+  std::string const& config, std::string const& script,
+  std::string const& inputs, std::string const& outputs,
+  std::string const& comment)
+{
+  this->WritePlatformConfigTag("Message", config, 3);
+  (*this->BuildFileStream) << cmVS10EscapeXML(comment) << "</Message>\n";
+  this->WritePlatformConfigTag("Command", config, 3);
+  (*this->BuildFileStream) << script << "</Command>\n";
+  this->WritePlatformConfigTag("AdditionalInputs", config, 3);
+  (*this->BuildFileStream) << inputs;
+  (*this->BuildFileStream) << ";%(AdditionalInputs)</AdditionalInputs>\n";
+  this->WritePlatformConfigTag("Outputs", config, 3);
+  (*this->BuildFileStream) << outputs << "</Outputs>\n";
+  if (this->LocalGenerator->GetVersion() >
+      cmGlobalVisualStudioGenerator::VS10) {
+    // VS >= 11 let us turn off linking of custom command outputs.
+    this->WritePlatformConfigTag("LinkObjects", config, 3);
+    (*this->BuildFileStream) << "false</LinkObjects>\n";
+  }
+}
+
+void cmVisualStudio10TargetGenerator::WriteCustomRuleCSharp(
+  std::string const& config, std::string const& name,
+  std::string const& script, std::string const& inputs,
+  std::string const& outputs, std::string const& comment)
+{
+  this->CSharpCustomCommandNames.insert(name);
+  std::stringstream attributes;
+  attributes << "\n    Name=\"" << name << "\"";
+  attributes << "\n    Inputs=\"" << inputs << "\"";
+  attributes << "\n    Outputs=\"" << outputs << "\"";
+  this->WritePlatformConfigTag("Target", config, 1, attributes.str().c_str(),
+                               "\n");
+  if (!comment.empty()) {
+    this->WriteString("<Exec Command=\"", 2);
+    (*this->BuildFileStream) << "echo " << cmVS10EscapeXML(comment)
+                             << "\" />\n";
+  }
+  this->WriteString("<Exec Command=\"", 2);
+  (*this->BuildFileStream) << script << "\" />\n";
+  this->WriteString("</Target>\n", 1);
 }
 
 std::string cmVisualStudio10TargetGenerator::ConvertPath(
@@ -1243,7 +1357,7 @@ void cmVisualStudio10TargetGenerator::ConvertToWindowsSlash(std::string& s)
 }
 void cmVisualStudio10TargetGenerator::WriteGroups()
 {
-  if (csproj == this->ProjectType) {
+  if (this->ProjectType == csproj) {
     return;
   }
 
@@ -1355,7 +1469,7 @@ void cmVisualStudio10TargetGenerator::WriteGroups()
       std::string guidName = "SG_Filter_";
       guidName += name;
       this->WriteString("<UniqueIdentifier>", 3);
-      std::string guid = this->GlobalGenerator->GetGUID(guidName.c_str());
+      std::string guid = this->GlobalGenerator->GetGUID(guidName);
       (*this->BuildFileStream) << "{" << guid << "}"
                                << "</UniqueIdentifier>\n";
       this->WriteString("</Filter>\n", 2);
@@ -1366,7 +1480,7 @@ void cmVisualStudio10TargetGenerator::WriteGroups()
     this->WriteString("<Filter Include=\"Resource Files\">\n", 2);
     std::string guidName = "SG_Filter_Resource Files";
     this->WriteString("<UniqueIdentifier>", 3);
-    std::string guid = this->GlobalGenerator->GetGUID(guidName.c_str());
+    std::string guid = this->GlobalGenerator->GetGUID(guidName);
     (*this->BuildFileStream) << "{" << guid << "}"
                              << "</UniqueIdentifier>\n";
     this->WriteString("<Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;", 3);
@@ -1478,6 +1592,8 @@ void cmVisualStudio10TargetGenerator::WriteExtraSource(cmSourceFile const* sf)
   std::string shaderEntryPoint;
   std::string shaderModel;
   std::string shaderAdditionalFlags;
+  std::string outputHeaderFile;
+  std::string variableName;
   std::string settingsGenerator;
   std::string settingsLastGenOutput;
   std::string sourceLink;
@@ -1485,7 +1601,7 @@ void cmVisualStudio10TargetGenerator::WriteExtraSource(cmSourceFile const* sf)
   std::string copyToOutDir;
   std::string includeInVsix;
   std::string ext = cmSystemTools::LowerCase(sf->GetExtension());
-  if (csproj == this->ProjectType) {
+  if (this->ProjectType == csproj) {
     // EVERY extra source file must have a <Link>, otherwise it might not
     // be visible in Visual Studio at all. The path relative to current
     // source- or binary-dir is used within the link, if the file is
@@ -1498,7 +1614,7 @@ void cmVisualStudio10TargetGenerator::WriteExtraSource(cmSourceFile const* sf)
       std::string srcDir = this->Makefile->GetCurrentSourceDirectory();
       std::string binDir = this->Makefile->GetCurrentBinaryDirectory();
       if (fullFileName.find(binDir) != std::string::npos) {
-        sourceLink = "";
+        sourceLink.clear();
       } else if (fullFileName.find(srcDir) != std::string::npos) {
         sourceLink = fullFileName.substr(srcDir.length() + 1);
       } else {
@@ -1527,6 +1643,16 @@ void cmVisualStudio10TargetGenerator::WriteExtraSource(cmSourceFile const* sf)
       shaderModel = sm;
       toolHasSettings = true;
     }
+    // Figure out which output header file to use if any
+    if (const char* ohf = sf->GetProperty("VS_SHADER_OUTPUT_HEADER_FILE")) {
+      outputHeaderFile = ohf;
+      toolHasSettings = true;
+    }
+    // Figure out which variable name to use if any
+    if (const char* vn = sf->GetProperty("VS_SHADER_VARIABLE_NAME")) {
+      variableName = vn;
+      toolHasSettings = true;
+    }
     // Figure out if there's any additional flags to use
     if (const char* saf = sf->GetProperty("VS_SHADER_FLAGS")) {
       shaderAdditionalFlags = saf;
@@ -1564,6 +1690,10 @@ void cmVisualStudio10TargetGenerator::WriteExtraSource(cmSourceFile const* sf)
     toolHasSettings = true;
   }
 
+  // Collect VS_CSHARP_* property values (if some are set)
+  std::map<std::string, std::string> sourceFileTags;
+  this->GetCSharpSourceProperties(sf, sourceFileTags);
+
   if (this->NsightTegra) {
     // Nsight Tegra needs specific file types to check up-to-dateness.
     std::string name = cmSystemTools::LowerCase(sf->GetLocation().GetName());
@@ -1604,7 +1734,8 @@ void cmVisualStudio10TargetGenerator::WriteExtraSource(cmSourceFile const* sf)
 
     if (!deployContent.empty()) {
       cmGeneratorExpression ge;
-      CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(deployContent);
+      std::unique_ptr<cmCompiledGeneratorExpression> cge =
+        ge.Parse(deployContent);
       // Deployment location cannot be set on a configuration basis
       if (!deployLocation.empty()) {
         this->WriteString("<Link>", 3);
@@ -1647,6 +1778,28 @@ void cmVisualStudio10TargetGenerator::WriteExtraSource(cmSourceFile const* sf)
       (*this->BuildFileStream) << cmVS10EscapeXML(shaderModel)
                                << "</ShaderModel>\n";
     }
+    if (!outputHeaderFile.empty()) {
+      for (size_t i = 0; i != this->Configurations.size(); ++i) {
+        this->WriteString("<HeaderFileOutput Condition=\""
+                          "'$(Configuration)|$(Platform)'=='",
+                          3);
+        (*this->BuildFileStream) << this->Configurations[i] << "|"
+                                 << this->Platform << "'\">"
+                                 << cmVS10EscapeXML(outputHeaderFile);
+        this->WriteString("</HeaderFileOutput>\n", 0);
+      }
+    }
+    if (!variableName.empty()) {
+      for (size_t i = 0; i != this->Configurations.size(); ++i) {
+        this->WriteString("<VariableName Condition=\""
+                          "'$(Configuration)|$(Platform)'=='",
+                          3);
+        (*this->BuildFileStream) << this->Configurations[i] << "|"
+                                 << this->Platform << "'\">"
+                                 << cmVS10EscapeXML(variableName);
+        this->WriteString("</VariableName>\n", 0);
+      }
+    }
     if (!shaderAdditionalFlags.empty()) {
       this->WriteString("<AdditionalOptions>", 3);
       (*this->BuildFileStream) << cmVS10EscapeXML(shaderAdditionalFlags)
@@ -1680,7 +1833,8 @@ void cmVisualStudio10TargetGenerator::WriteExtraSource(cmSourceFile const* sf)
       (*this->BuildFileStream) << cmVS10EscapeXML(includeInVsix)
                                << "</IncludeInVSIX>\n";
     }
-
+    // write source file specific tags
+    this->WriteCSharpSourceProperties(sourceFileTags);
     this->WriteString("</", 2);
     (*this->BuildFileStream) << tool << ">\n";
   } else {
@@ -1929,7 +2083,7 @@ bool cmVisualStudio10TargetGenerator::OutputSourceSpecificFlags(
     std::string configDefines = defines;
     std::string defPropName = "COMPILE_DEFINITIONS_";
     defPropName += configUpper;
-    if (const char* ccdefs = sf.GetProperty(defPropName.c_str())) {
+    if (const char* ccdefs = sf.GetProperty(defPropName)) {
       if (!configDefines.empty()) {
         configDefines += ";";
       }
@@ -1944,7 +2098,7 @@ bool cmVisualStudio10TargetGenerator::OutputSourceSpecificFlags(
       hasFlags = true;
       cmGlobalVisualStudio10Generator* gg =
         static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-      cmIDEFlagTable const* flagtable = CM_NULLPTR;
+      cmIDEFlagTable const* flagtable = nullptr;
       const std::string& srclang = source->GetLanguage();
       if (srclang == "C" || srclang == "CXX") {
         flagtable = gg->GetClFlagTable();
@@ -1970,9 +2124,9 @@ bool cmVisualStudio10TargetGenerator::OutputSourceSpecificFlags(
       }
       if (configDependentFlags) {
         cmGeneratorExpression ge;
-        CM_AUTO_PTR<cmCompiledGeneratorExpression> cge = ge.Parse(flags);
-        std::string evaluatedFlags =
-          cge->Evaluate(this->LocalGenerator, *config);
+        std::unique_ptr<cmCompiledGeneratorExpression> cge = ge.Parse(flags);
+        std::string evaluatedFlags = cge->Evaluate(
+          this->LocalGenerator, *config, false, this->GeneratorTarget);
         clOptions.Parse(evaluatedFlags.c_str());
       } else {
         clOptions.Parse(flags.c_str());
@@ -2002,48 +2156,23 @@ bool cmVisualStudio10TargetGenerator::OutputSourceSpecificFlags(
     std::string xamlFileName = fileName.substr(0, fileName.find_last_of("."));
     (*this->BuildFileStream) << xamlFileName << "</DependentUpon>\n";
   }
-  if (csproj == this->ProjectType) {
+  if (this->ProjectType == csproj) {
     std::string f = source->GetFullPath();
     typedef std::map<std::string, std::string> CsPropMap;
     CsPropMap sourceFileTags;
     // set <Link> tag if necessary
-    if (!this->InSourceBuild) {
-      const std::string stripFromPath =
-        this->Makefile->GetCurrentSourceDirectory();
-      if (f.find(stripFromPath) != std::string::npos) {
-        std::string link = f.substr(stripFromPath.length() + 1);
-        this->ConvertToWindowsSlash(link);
-        sourceFileTags["Link"] = link;
-      }
-    }
-    const cmPropertyMap& props = sf.GetProperties();
-    for (cmPropertyMap::const_iterator p = props.begin(); p != props.end();
-         ++p) {
-      static const std::string propNamePrefix = "VS_CSHARP_";
-      if (p->first.find(propNamePrefix.c_str()) == 0) {
-        std::string tagName = p->first.substr(propNamePrefix.length());
-        if (!tagName.empty()) {
-          const std::string val = props.GetPropertyValue(p->first);
-          if (!val.empty()) {
-            sourceFileTags[tagName] = val;
-          } else {
-            sourceFileTags.erase(tagName);
-          }
-        }
-      }
+    std::string link;
+    this->GetCSharpSourceLink(source, link);
+    if (!link.empty()) {
+      sourceFileTags["Link"] = link;
     }
+    this->GetCSharpSourceProperties(&sf, sourceFileTags);
     // write source file specific tags
     if (!sourceFileTags.empty()) {
       hasFlags = true;
       (*this->BuildFileStream) << firstString;
       firstString = "";
-      for (CsPropMap::const_iterator i = sourceFileTags.begin();
-           i != sourceFileTags.end(); ++i) {
-        this->WriteString("<", 3);
-        (*this->BuildFileStream)
-          << i->first << ">" << cmVS10EscapeXML(i->second) << "</" << i->first
-          << ">\n";
-      }
+      this->WriteCSharpSourceProperties(sourceFileTags);
     }
   }
 
@@ -2069,7 +2198,7 @@ void cmVisualStudio10TargetGenerator::WritePathAndIncrementalLinkOptions()
   if (ttype > cmStateEnums::GLOBAL_TARGET) {
     return;
   }
-  if (csproj == this->ProjectType) {
+  if (this->ProjectType == csproj) {
     return;
   }
 
@@ -2081,7 +2210,7 @@ void cmVisualStudio10TargetGenerator::WritePathAndIncrementalLinkOptions()
          this->Configurations.begin();
        config != this->Configurations.end(); ++config) {
     if (ttype >= cmStateEnums::UTILITY) {
-      this->WritePlatformConfigTag("IntDir", config->c_str(), 2);
+      this->WritePlatformConfigTag("IntDir", *config, 2);
       *this->BuildFileStream
         << "$(Platform)\\$(Configuration)\\$(ProjectName)\\"
         << "</IntDir>\n";
@@ -2098,30 +2227,30 @@ void cmVisualStudio10TargetGenerator::WritePathAndIncrementalLinkOptions()
         targetNameFull = this->GeneratorTarget->GetName();
         targetNameFull += ".lib";
       } else {
-        outDir = this->GeneratorTarget->GetDirectory(config->c_str()) + "/";
-        targetNameFull = this->GeneratorTarget->GetFullName(config->c_str());
+        outDir = this->GeneratorTarget->GetDirectory(*config) + "/";
+        targetNameFull = this->GeneratorTarget->GetFullName(*config);
       }
       this->ConvertToWindowsSlash(intermediateDir);
       this->ConvertToWindowsSlash(outDir);
 
-      this->WritePlatformConfigTag("OutDir", config->c_str(), 2);
+      this->WritePlatformConfigTag("OutDir", *config, 2);
       *this->BuildFileStream << cmVS10EscapeXML(outDir) << "</OutDir>\n";
 
-      this->WritePlatformConfigTag("IntDir", config->c_str(), 2);
+      this->WritePlatformConfigTag("IntDir", *config, 2);
       *this->BuildFileStream << cmVS10EscapeXML(intermediateDir)
                              << "</IntDir>\n";
 
       if (const char* workingDir = this->GeneratorTarget->GetProperty(
             "VS_DEBUGGER_WORKING_DIRECTORY")) {
-        this->WritePlatformConfigTag("LocalDebuggerWorkingDirectory",
-                                     config->c_str(), 2);
+        this->WritePlatformConfigTag("LocalDebuggerWorkingDirectory", *config,
+                                     2);
         *this->BuildFileStream << cmVS10EscapeXML(workingDir)
                                << "</LocalDebuggerWorkingDirectory>\n";
       }
 
       std::string name =
         cmSystemTools::GetFilenameWithoutLastExtension(targetNameFull);
-      this->WritePlatformConfigTag("TargetName", config->c_str(), 2);
+      this->WritePlatformConfigTag("TargetName", *config, 2);
       *this->BuildFileStream << cmVS10EscapeXML(name) << "</TargetName>\n";
 
       std::string ext =
@@ -2131,7 +2260,7 @@ void cmVisualStudio10TargetGenerator::WritePathAndIncrementalLinkOptions()
         // A single "." appears to be treated as an empty extension.
         ext = ".";
       }
-      this->WritePlatformConfigTag("TargetExt", config->c_str(), 2);
+      this->WritePlatformConfigTag("TargetExt", *config, 2);
       *this->BuildFileStream << cmVS10EscapeXML(ext) << "</TargetExt>\n";
 
       this->OutputLinkIncremental(*config);
@@ -2146,7 +2275,7 @@ void cmVisualStudio10TargetGenerator::OutputLinkIncremental(
   if (!this->MSTools) {
     return;
   }
-  if (csproj == this->ProjectType) {
+  if (this->ProjectType == csproj) {
     return;
   }
   // static libraries and things greater than modules do not need
@@ -2158,13 +2287,13 @@ void cmVisualStudio10TargetGenerator::OutputLinkIncremental(
   Options& linkOptions = *(this->LinkOptions[configName]);
 
   const char* incremental = linkOptions.GetFlag("LinkIncremental");
-  this->WritePlatformConfigTag("LinkIncremental", configName.c_str(), 2);
+  this->WritePlatformConfigTag("LinkIncremental", configName, 2);
   *this->BuildFileStream << (incremental ? incremental : "true")
                          << "</LinkIncremental>\n";
   linkOptions.RemoveFlag("LinkIncremental");
 
   const char* manifest = linkOptions.GetFlag("GenerateManifest");
-  this->WritePlatformConfigTag("GenerateManifest", configName.c_str(), 2);
+  this->WritePlatformConfigTag("GenerateManifest", configName, 2);
   *this->BuildFileStream << (manifest ? manifest : "true")
                          << "</GenerateManifest>\n";
   linkOptions.RemoveFlag("GenerateManifest");
@@ -2175,7 +2304,7 @@ void cmVisualStudio10TargetGenerator::OutputLinkIncremental(
   for (const char** f = flags; *f; ++f) {
     const char* flag = *f;
     if (const char* value = linkOptions.GetFlag(flag)) {
-      this->WritePlatformConfigTag(flag, configName.c_str(), 2);
+      this->WritePlatformConfigTag(flag, configName, 2);
       *this->BuildFileStream << value << "</" << flag << ">\n";
       linkOptions.RemoveFlag(flag);
     }
@@ -2203,23 +2332,23 @@ bool cmVisualStudio10TargetGenerator::ComputeClOptions(
 
   cmGlobalVisualStudio10Generator* gg =
     static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-  CM_AUTO_PTR<Options> pOptions;
+  std::unique_ptr<Options> pOptions;
   switch (this->ProjectType) {
     case vcxproj:
-      pOptions = CM_AUTO_PTR<Options>(new Options(
-        this->LocalGenerator, Options::Compiler, gg->GetClFlagTable()));
+      pOptions = cm::make_unique<Options>(
+        this->LocalGenerator, Options::Compiler, gg->GetClFlagTable());
       break;
     case csproj:
-      pOptions = CM_AUTO_PTR<Options>(new Options(this->LocalGenerator,
-                                                  Options::CSharpCompiler,
-                                                  gg->GetCSharpFlagTable()));
+      pOptions =
+        cm::make_unique<Options>(this->LocalGenerator, Options::CSharpCompiler,
+                                 gg->GetCSharpFlagTable());
       break;
   }
   Options& clOptions = *pOptions;
 
   std::string flags;
   const std::string& linkLanguage =
-    this->GeneratorTarget->GetLinkerLanguage(configName.c_str());
+    this->GeneratorTarget->GetLinkerLanguage(configName);
   if (linkLanguage.empty()) {
     cmSystemTools::Error(
       "CMake can not determine linker language for target: ",
@@ -2250,13 +2379,13 @@ bool cmVisualStudio10TargetGenerator::ComputeClOptions(
     baseFlagVar += "_FLAGS";
     flags =
       this->GeneratorTarget->Target->GetMakefile()->GetRequiredDefinition(
-        baseFlagVar.c_str());
+        baseFlagVar);
     std::string flagVar =
       baseFlagVar + std::string("_") + cmSystemTools::UpperCase(configName);
     flags += " ";
     flags +=
       this->GeneratorTarget->Target->GetMakefile()->GetRequiredDefinition(
-        flagVar.c_str());
+        flagVar);
     this->LocalGenerator->AddCompileOptions(flags, this->GeneratorTarget,
                                             langForClCompile, configName);
   }
@@ -2275,7 +2404,7 @@ bool cmVisualStudio10TargetGenerator::ComputeClOptions(
   std::string defineFlags =
     this->GeneratorTarget->Target->GetMakefile()->GetDefineFlags();
   if (this->MSTools) {
-    if (vcxproj == this->ProjectType) {
+    if (this->ProjectType == vcxproj) {
       clOptions.FixExceptionHandlingDefault();
       clOptions.AddFlag("PrecompiledHeader", "NotUsing");
       std::string asmLocation = configName + "/";
@@ -2287,12 +2416,12 @@ bool cmVisualStudio10TargetGenerator::ComputeClOptions(
   std::vector<std::string> targetDefines;
   switch (this->ProjectType) {
     case vcxproj:
-      this->GeneratorTarget->GetCompileDefinitions(targetDefines,
-                                                   configName.c_str(), "CXX");
+      this->GeneratorTarget->GetCompileDefinitions(targetDefines, configName,
+                                                   "CXX");
       break;
     case csproj:
-      this->GeneratorTarget->GetCompileDefinitions(
-        targetDefines, configName.c_str(), "CSharp");
+      this->GeneratorTarget->GetCompileDefinitions(targetDefines, configName,
+                                                   "CSharp");
       break;
   }
   clOptions.AddDefines(targetDefines);
@@ -2332,7 +2461,7 @@ bool cmVisualStudio10TargetGenerator::ComputeClOptions(
     }
   }
 
-  if (csproj != this->ProjectType && clOptions.IsManaged()) {
+  if (this->ProjectType != csproj && clOptions.IsManaged()) {
     this->Managed = true;
     std::string managedType = clOptions.GetFlag("CompileAsManaged");
     if (managedType == "Safe") {
@@ -2340,6 +2469,12 @@ bool cmVisualStudio10TargetGenerator::ComputeClOptions(
       clOptions.AddFlag("CallingConvention", "");
     }
   }
+  if (this->ProjectType == csproj) {
+    // /nowin32manifest overrides /win32manifest: parameter
+    if (clOptions.HasFlag("NoWin32Manifest")) {
+      clOptions.RemoveFlag("ApplicationManifest");
+    }
+  }
 
   this->ClOptions[configName] = pOptions.release();
   return true;
@@ -2371,8 +2506,7 @@ void cmVisualStudio10TargetGenerator::WriteClOptions(
   }
 
   if (this->MSTools) {
-    cmsys::RegularExpression clangToolset(
-      "(v[0-9]+_clang_.*|LLVM-vs[0-9]+.*)");
+    cmsys::RegularExpression clangToolset("v[0-9]+_clang_.*");
     const char* toolset = this->GlobalGenerator->GetPlatformToolset();
     if (toolset && clangToolset.find(toolset)) {
       this->WriteString("<ObjectFileName>"
@@ -2392,8 +2526,7 @@ void cmVisualStudio10TargetGenerator::WriteClOptions(
     }
 
     // Specify the compiler program database file if configured.
-    std::string pdb =
-      this->GeneratorTarget->GetCompilePDBPath(configName.c_str());
+    std::string pdb = this->GeneratorTarget->GetCompilePDBPath(configName);
     if (!pdb.empty()) {
       this->ConvertToWindowsSlash(pdb);
       this->WriteString("<ProgramDataBaseFileName>", 3);
@@ -2422,8 +2555,8 @@ bool cmVisualStudio10TargetGenerator::ComputeRcOptions(
 {
   cmGlobalVisualStudio10Generator* gg =
     static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-  CM_AUTO_PTR<Options> pOptions(new Options(
-    this->LocalGenerator, Options::ResourceCompiler, gg->GetRcFlagTable()));
+  auto pOptions = cm::make_unique<Options>(
+    this->LocalGenerator, Options::ResourceCompiler, gg->GetRcFlagTable());
   Options& rcOptions = *pOptions;
 
   std::string CONFIG = cmSystemTools::UpperCase(configName);
@@ -2483,8 +2616,8 @@ bool cmVisualStudio10TargetGenerator::ComputeCudaOptions(
 {
   cmGlobalVisualStudio10Generator* gg =
     static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-  CM_AUTO_PTR<Options> pOptions(new Options(
-    this->LocalGenerator, Options::CudaCompiler, gg->GetCudaFlagTable()));
+  auto pOptions = cm::make_unique<Options>(
+    this->LocalGenerator, Options::CudaCompiler, gg->GetCudaFlagTable());
   Options& cudaOptions = *pOptions;
 
   // Get compile flags for CUDA in this directory.
@@ -2515,6 +2648,13 @@ bool cmVisualStudio10TargetGenerator::ComputeCudaOptions(
     cudaOptions.AddFlag("CompileOut", "$(IntDir)%(Filename).ptx");
   }
 
+  // CUDA automatically passes the proper '--machine' flag to nvcc
+  // for the current architecture, but does not reflect this default
+  // in the user-visible IDE settings.  Set it explicitly.
+  if (this->Platform == "x64") {
+    cudaOptions.AddFlag("TargetMachinePlatform", "64");
+  }
+
   // Convert the host compiler options to the toolset's abstractions
   // using a secondary flag table.
   cudaOptions.ClearTables();
@@ -2535,8 +2675,8 @@ bool cmVisualStudio10TargetGenerator::ComputeCudaOptions(
   cudaOptions.FixCudaCodeGeneration();
 
   std::vector<std::string> targetDefines;
-  this->GeneratorTarget->GetCompileDefinitions(targetDefines,
-                                               configName.c_str(), "CUDA");
+  this->GeneratorTarget->GetCompileDefinitions(targetDefines, configName,
+                                               "CUDA");
   cudaOptions.AddDefines(targetDefines);
 
   // Add a definition for the configuration name.
@@ -2591,8 +2731,8 @@ bool cmVisualStudio10TargetGenerator::ComputeCudaLinkOptions(
 {
   cmGlobalVisualStudio10Generator* gg =
     static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-  CM_AUTO_PTR<Options> pOptions(new Options(
-    this->LocalGenerator, Options::CudaCompiler, gg->GetCudaFlagTable()));
+  auto pOptions = cm::make_unique<Options>(
+    this->LocalGenerator, Options::CudaCompiler, gg->GetCudaFlagTable());
   Options& cudaLinkOptions = *pOptions;
 
   // Determine if we need to do a device link
@@ -2662,8 +2802,8 @@ bool cmVisualStudio10TargetGenerator::ComputeMasmOptions(
 {
   cmGlobalVisualStudio10Generator* gg =
     static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-  CM_AUTO_PTR<Options> pOptions(new Options(
-    this->LocalGenerator, Options::MasmCompiler, gg->GetMasmFlagTable()));
+  auto pOptions = cm::make_unique<Options>(
+    this->LocalGenerator, Options::MasmCompiler, gg->GetMasmFlagTable());
   Options& masmOptions = *pOptions;
 
   std::string CONFIG = cmSystemTools::UpperCase(configName);
@@ -2720,8 +2860,8 @@ bool cmVisualStudio10TargetGenerator::ComputeNasmOptions(
 {
   cmGlobalVisualStudio10Generator* gg =
     static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-  CM_AUTO_PTR<Options> pOptions(new Options(
-    this->LocalGenerator, Options::NasmCompiler, gg->GetNasmFlagTable()));
+  auto pOptions = cm::make_unique<Options>(
+    this->LocalGenerator, Options::NasmCompiler, gg->GetNasmFlagTable());
   Options& nasmOptions = *pOptions;
 
   std::string CONFIG = cmSystemTools::UpperCase(configName);
@@ -2882,7 +3022,7 @@ void cmVisualStudio10TargetGenerator::WriteAntBuildOptions(
   if (const char* nativeLibDirectoriesExpression =
         this->GeneratorTarget->GetProperty("ANDROID_NATIVE_LIB_DIRECTORIES")) {
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge =
+    std::unique_ptr<cmCompiledGeneratorExpression> cge =
       ge.Parse(nativeLibDirectoriesExpression);
     std::string nativeLibDirs =
       cge->Evaluate(this->LocalGenerator, configName);
@@ -2895,7 +3035,7 @@ void cmVisualStudio10TargetGenerator::WriteAntBuildOptions(
         this->GeneratorTarget->GetProperty(
           "ANDROID_NATIVE_LIB_DEPENDENCIES")) {
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge =
+    std::unique_ptr<cmCompiledGeneratorExpression> cge =
       ge.Parse(nativeLibDependenciesExpression);
     std::string nativeLibDeps =
       cge->Evaluate(this->LocalGenerator, configName);
@@ -2914,7 +3054,7 @@ void cmVisualStudio10TargetGenerator::WriteAntBuildOptions(
   if (const char* jarDirectoriesExpression =
         this->GeneratorTarget->GetProperty("ANDROID_JAR_DIRECTORIES")) {
     cmGeneratorExpression ge;
-    CM_AUTO_PTR<cmCompiledGeneratorExpression> cge =
+    std::unique_ptr<cmCompiledGeneratorExpression> cge =
       ge.Parse(jarDirectoriesExpression);
     std::string jarDirectories =
       cge->Evaluate(this->LocalGenerator, configName);
@@ -2976,8 +3116,9 @@ bool cmVisualStudio10TargetGenerator::ComputeLinkOptions(
 {
   cmGlobalVisualStudio10Generator* gg =
     static_cast<cmGlobalVisualStudio10Generator*>(this->GlobalGenerator);
-  CM_AUTO_PTR<Options> pOptions(new Options(
-    this->LocalGenerator, Options::Linker, gg->GetLinkFlagTable(), 0, this));
+  auto pOptions =
+    cm::make_unique<Options>(this->LocalGenerator, Options::Linker,
+                             gg->GetLinkFlagTable(), nullptr, this);
   Options& linkOptions = *pOptions;
 
   cmGeneratorTarget::LinkClosure const* linkClosure =
@@ -3006,11 +3147,11 @@ bool cmVisualStudio10TargetGenerator::ComputeLinkOptions(
   linkFlagVarBase += "_LINKER_FLAGS";
   flags += " ";
   flags += this->GeneratorTarget->Target->GetMakefile()->GetRequiredDefinition(
-    linkFlagVarBase.c_str());
+    linkFlagVarBase);
   std::string linkFlagVar = linkFlagVarBase + "_" + CONFIG;
   flags += " ";
   flags += this->GeneratorTarget->Target->GetMakefile()->GetRequiredDefinition(
-    linkFlagVar.c_str());
+    linkFlagVar);
   const char* targetLinkFlags =
     this->GeneratorTarget->GetProperty("LINK_FLAGS");
   if (targetLinkFlags) {
@@ -3020,13 +3161,13 @@ bool cmVisualStudio10TargetGenerator::ComputeLinkOptions(
   std::string flagsProp = "LINK_FLAGS_";
   flagsProp += CONFIG;
   if (const char* flagsConfig =
-        this->GeneratorTarget->GetProperty(flagsProp.c_str())) {
+        this->GeneratorTarget->GetProperty(flagsProp)) {
     flags += " ";
     flags += flagsConfig;
   }
 
   cmComputeLinkInformation* pcli =
-    this->GeneratorTarget->GetLinkInformation(config.c_str());
+    this->GeneratorTarget->GetLinkInformation(config);
   if (!pcli) {
     cmSystemTools::Error(
       "CMake can not compute cmComputeLinkInformation for target: ",
@@ -3054,8 +3195,7 @@ bool cmVisualStudio10TargetGenerator::ComputeLinkOptions(
   std::string standardLibsVar = "CMAKE_";
   standardLibsVar += linkLanguage;
   standardLibsVar += "_STANDARD_LIBRARIES";
-  std::string const libs =
-    this->Makefile->GetSafeDefinition(standardLibsVar.c_str());
+  std::string const libs = this->Makefile->GetSafeDefinition(standardLibsVar);
   cmSystemTools::ParseWindowsCommandLine(libs.c_str(), libVec);
   linkOptions.AddFlag("AdditionalDependencies", libVec);
 
@@ -3083,18 +3223,15 @@ bool cmVisualStudio10TargetGenerator::ComputeLinkOptions(
   std::string targetNameImport;
   std::string targetNamePDB;
   if (this->GeneratorTarget->GetType() == cmStateEnums::EXECUTABLE) {
-    this->GeneratorTarget->GetExecutableNames(targetName, targetNameFull,
-                                              targetNameImport, targetNamePDB,
-                                              config.c_str());
+    this->GeneratorTarget->GetExecutableNames(
+      targetName, targetNameFull, targetNameImport, targetNamePDB, config);
   } else {
     this->GeneratorTarget->GetLibraryNames(targetName, targetNameSO,
                                            targetNameFull, targetNameImport,
-                                           targetNamePDB, config.c_str());
+                                           targetNamePDB, config);
   }
 
   if (this->MSTools) {
-    linkOptions.AddFlag("Version", "");
-
     if (this->GeneratorTarget->GetPropertyAsBool("WIN32_EXECUTABLE")) {
       if (this->GlobalGenerator->TargetsWindowsCE()) {
         linkOptions.AddFlag("SubSystem", "WindowsCE");
@@ -3130,11 +3267,11 @@ bool cmVisualStudio10TargetGenerator::ComputeLinkOptions(
 
     linkOptions.AddFlag("GenerateDebugInformation", "false");
 
-    std::string pdb = this->GeneratorTarget->GetPDBDirectory(config.c_str());
+    std::string pdb = this->GeneratorTarget->GetPDBDirectory(config);
     pdb += "/";
     pdb += targetNamePDB;
     std::string imLib = this->GeneratorTarget->GetDirectory(
-      config.c_str(), cmStateEnums::ImportLibraryArtifact);
+      config, cmStateEnums::ImportLibraryArtifact);
     imLib += "/";
     imLib += targetNameImport;
 
@@ -3164,6 +3301,7 @@ bool cmVisualStudio10TargetGenerator::ComputeLinkOptions(
   }
 
   linkOptions.Parse(flags.c_str());
+  linkOptions.FixManifestUACFlags();
 
   if (this->MSTools) {
     cmGeneratorTarget::ModuleDefinitionInfo const* mdi =
@@ -3209,7 +3347,7 @@ bool cmVisualStudio10TargetGenerator::ComputeLibOptions(
   std::string const& config)
 {
   cmComputeLinkInformation* pcli =
-    this->GeneratorTarget->GetLinkInformation(config.c_str());
+    this->GeneratorTarget->GetLinkInformation(config);
   if (!pcli) {
     cmSystemTools::Error(
       "CMake can not compute cmComputeLinkInformation for target: ",
@@ -3224,8 +3362,8 @@ bool cmVisualStudio10TargetGenerator::ComputeLibOptions(
     this->LocalGenerator->GetCurrentBinaryDirectory();
   for (ItemVector::const_iterator l = libs.begin(); l != libs.end(); ++l) {
     if (l->IsPath && cmVS10IsTargetsFile(l->Value)) {
-      std::string path = this->LocalGenerator->ConvertToRelativePath(
-        currentBinDir, l->Value.c_str());
+      std::string path =
+        this->LocalGenerator->ConvertToRelativePath(currentBinDir, l->Value);
       this->ConvertToWindowsSlash(path);
       this->AddTargetsFileAndConfigPair(path, config);
     }
@@ -3241,7 +3379,7 @@ void cmVisualStudio10TargetGenerator::WriteLinkOptions(
       this->GeneratorTarget->GetType() > cmStateEnums::MODULE_LIBRARY) {
     return;
   }
-  if (csproj == this->ProjectType) {
+  if (this->ProjectType == csproj) {
     return;
   }
   Options& linkOptions = *(this->LinkOptions[config]);
@@ -3270,8 +3408,8 @@ void cmVisualStudio10TargetGenerator::AddLibraries(
     this->LocalGenerator->GetCurrentBinaryDirectory();
   for (ItemVector::const_iterator l = libs.begin(); l != libs.end(); ++l) {
     if (l->IsPath) {
-      std::string path = this->LocalGenerator->ConvertToRelativePath(
-        currentBinDir, l->Value.c_str());
+      std::string path =
+        this->LocalGenerator->ConvertToRelativePath(currentBinDir, l->Value);
       this->ConvertToWindowsSlash(path);
       if (cmVS10IsTargetsFile(l->Value)) {
         vsTargetVec.push_back(path);
@@ -3311,7 +3449,7 @@ void cmVisualStudio10TargetGenerator::WriteMidlOptions(
   if (!this->MSTools) {
     return;
   }
-  if (csproj == this->ProjectType) {
+  if (this->ProjectType == csproj) {
     return;
   }
 
@@ -3353,17 +3491,20 @@ void cmVisualStudio10TargetGenerator::WriteMidlOptions(
 
 void cmVisualStudio10TargetGenerator::WriteItemDefinitionGroups()
 {
+  if (this->ProjectType == csproj) {
+    return;
+  }
   for (std::vector<std::string>::const_iterator i =
          this->Configurations.begin();
        i != this->Configurations.end(); ++i) {
     std::vector<std::string> includes;
     this->LocalGenerator->GetIncludeDirectories(
-      includes, this->GeneratorTarget, "C", i->c_str());
+      includes, this->GeneratorTarget, "C", *i);
     for (std::vector<std::string>::iterator ii = includes.begin();
          ii != includes.end(); ++ii) {
       this->ConvertToWindowsSlash(*ii);
     }
-    this->WritePlatformConfigTag("ItemDefinitionGroup", i->c_str(), 1);
+    this->WritePlatformConfigTag("ItemDefinitionGroup", *i, 1);
     *this->BuildFileStream << "\n";
     //    output cl compile flags <ClCompile></ClCompile>
     if (this->GeneratorTarget->GetType() <= cmStateEnums::OBJECT_LIBRARY) {
@@ -3377,7 +3518,7 @@ void cmVisualStudio10TargetGenerator::WriteItemDefinitionGroups()
     //    output midl flags       <Midl></Midl>
     this->WriteMidlOptions(*i, includes);
     // write events
-    if (csproj != this->ProjectType) {
+    if (this->ProjectType != csproj) {
       this->WriteEvents(*i);
     }
     //    output link flags       <Link></Link>
@@ -3436,24 +3577,30 @@ void cmVisualStudio10TargetGenerator::WriteEvent(
   for (std::vector<cmCustomCommand>::const_iterator i = commands.begin();
        i != commands.end(); ++i) {
     cmCustomCommandGenerator ccg(*i, configName, this->LocalGenerator);
-    comment += pre;
-    comment += lg->ConstructComment(ccg);
-    script += pre;
-    pre = "\n";
-    script += cmVS10EscapeXML(lg->ConstructScript(ccg));
+    if (!ccg.HasOnlyEmptyCommandLines()) {
+      comment += pre;
+      comment += lg->ConstructComment(ccg);
+      script += pre;
+      pre = "\n";
+      script += cmVS10EscapeXML(lg->ConstructScript(ccg));
+    }
   }
   comment = cmVS10EscapeComment(comment);
-  if (csproj != this->ProjectType) {
+  if (this->ProjectType != csproj) {
     this->WriteString("<Message>", 3);
     (*this->BuildFileStream) << cmVS10EscapeXML(comment) << "</Message>\n";
     this->WriteString("<Command>", 3);
   } else {
-    if (!comment.empty()) {
+    std::string strippedComment = comment;
+    strippedComment.erase(
+      std::remove(strippedComment.begin(), strippedComment.end(), '\t'),
+      strippedComment.end());
+    if (!comment.empty() && !strippedComment.empty()) {
       (*this->BuildFileStream) << "echo " << cmVS10EscapeXML(comment) << "\n";
     }
   }
   (*this->BuildFileStream) << script;
-  if (csproj != this->ProjectType) {
+  if (this->ProjectType != csproj) {
     (*this->BuildFileStream) << "</Command>";
   }
   (*this->BuildFileStream) << "\n";
@@ -3497,11 +3644,12 @@ void cmVisualStudio10TargetGenerator::WriteProjectReferences()
     this->ConvertToWindowsSlash(path);
     (*this->BuildFileStream) << cmVS10EscapeXML(path) << "\">\n";
     this->WriteString("<Project>", 3);
-    (*this->BuildFileStream)
-      << "{" << this->GlobalGenerator->GetGUID(name.c_str()) << "}";
+    (*this->BuildFileStream) << "{" << this->GlobalGenerator->GetGUID(name)
+                             << "}";
     (*this->BuildFileStream) << "</Project>\n";
     this->WriteString("<Name>", 3);
     (*this->BuildFileStream) << name << "</Name>\n";
+    this->WriteDotNetReferenceCustomTags(name);
     if (csproj == this->ProjectType) {
       if (!static_cast<cmGlobalVisualStudioGenerator*>(this->GlobalGenerator)
              ->TargetCanBeReferenced(dt)) {
@@ -3600,10 +3748,10 @@ void cmVisualStudio10TargetGenerator::WriteSDKReferences()
         this->WriteSingleSDKReference("WindowsIoT", iotExtensionsVersion);
       }
     }
+  }
 
-    if (hasWrittenItemGroup) {
-      this->WriteString("</ItemGroup>\n", 1);
-    }
+  if (hasWrittenItemGroup) {
+    this->WriteString("</ItemGroup>\n", 1);
   }
 }
 
@@ -3777,7 +3925,7 @@ void cmVisualStudio10TargetGenerator::WriteApplicationTypeSettings()
         this->WriteString("<XapOutputs>true</XapOutputs>\n", 2);
         this->WriteString("<XapFilename>", 2);
         (*this->BuildFileStream)
-          << cmVS10EscapeXML(this->Name.c_str())
+          << cmVS10EscapeXML(this->Name)
           << "_$(Configuration)_$(Platform).xap</XapFilename>\n";
       }
     }
@@ -3786,6 +3934,10 @@ void cmVisualStudio10TargetGenerator::WriteApplicationTypeSettings()
     this->WriteString("<AppContainerApplication>true"
                       "</AppContainerApplication>\n",
                       2);
+  } else if (this->Platform == "ARM64") {
+    this->WriteString("<WindowsSDKDesktopARM64Support>true"
+                      "</WindowsSDKDesktopARM64Support>\n",
+                      2);
   } else if (this->Platform == "ARM") {
     this->WriteString("<WindowsSDKDesktopARMSupport>true"
                       "</WindowsSDKDesktopARMSupport>\n",
@@ -4296,6 +4448,59 @@ bool cmVisualStudio10TargetGenerator::ForceOld(const std::string& source) const
   return true;
 }
 
+void cmVisualStudio10TargetGenerator::GetCSharpSourceProperties(
+  cmSourceFile const* sf, std::map<std::string, std::string>& tags)
+{
+  if (this->ProjectType == csproj) {
+    const cmPropertyMap& props = sf->GetProperties();
+    for (cmPropertyMap::const_iterator p = props.begin(); p != props.end();
+         ++p) {
+      static const std::string propNamePrefix = "VS_CSHARP_";
+      if (p->first.find(propNamePrefix) == 0) {
+        std::string tagName = p->first.substr(propNamePrefix.length());
+        if (!tagName.empty()) {
+          const std::string val = props.GetPropertyValue(p->first);
+          if (!val.empty()) {
+            tags[tagName] = val;
+          } else {
+            tags.erase(tagName);
+          }
+        }
+      }
+    }
+  }
+}
+
+void cmVisualStudio10TargetGenerator::WriteCSharpSourceProperties(
+  const std::map<std::string, std::string>& tags)
+{
+  if (!tags.empty()) {
+    for (std::map<std::string, std::string>::const_iterator i = tags.begin();
+         i != tags.end(); ++i) {
+      this->WriteString("<", 3);
+      (*this->BuildFileStream) << i->first << ">" << cmVS10EscapeXML(i->second)
+                               << "</" << i->first << ">\n";
+    }
+  }
+}
+
+void cmVisualStudio10TargetGenerator::GetCSharpSourceLink(
+  cmSourceFile const* sf, std::string& link)
+{
+  std::string f = sf->GetFullPath();
+  if (!this->InSourceBuild) {
+    const std::string stripFromPath =
+      this->Makefile->GetCurrentSourceDirectory();
+    if (f.find(stripFromPath) != std::string::npos) {
+      link = f.substr(stripFromPath.length() + 1);
+      if (const char* l = sf->GetProperty("VS_CSHARP_Link")) {
+        link = l;
+      }
+      this->ConvertToWindowsSlash(link);
+    }
+  }
+}
+
 std::string cmVisualStudio10TargetGenerator::GetCMakeFilePath(
   const char* relativeFilePath) const
 {
diff --git a/Source/cmVisualStudio10TargetGenerator.h b/Source/cmVisualStudio10TargetGenerator.h
index 61066158c..fb24f1ac5 100644
--- a/Source/cmVisualStudio10TargetGenerator.h
+++ b/Source/cmVisualStudio10TargetGenerator.h
@@ -3,7 +3,7 @@
 #ifndef cmVisualStudioTargetGenerator_h
 #define cmVisualStudioTargetGenerator_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <map>
@@ -66,6 +66,7 @@ private:
   void WriteAllSources();
   void WriteDotNetReferences();
   void WriteDotNetReference(std::string const& ref, std::string const& hint);
+  void WriteDotNetReferenceCustomTags(std::string const& ref);
   void WriteEmbeddedResourceGroup();
   void WriteWinRTReferences();
   void WriteWinRTPackageCertificateKeyFile();
@@ -126,6 +127,16 @@ private:
   void OutputLinkIncremental(std::string const& configName);
   void WriteCustomRule(cmSourceFile const* source,
                        cmCustomCommand const& command);
+  void WriteCustomRuleCpp(std::string const& config, std::string const& script,
+                          std::string const& inputs,
+                          std::string const& outputs,
+                          std::string const& comment);
+  void WriteCustomRuleCSharp(std::string const& config,
+                             std::string const& commandName,
+                             std::string const& script,
+                             std::string const& inputs,
+                             std::string const& outputs,
+                             std::string const& comment);
   void WriteCustomCommands();
   void WriteCustomCommand(cmSourceFile const* sf);
   void WriteGroups();
@@ -153,6 +164,12 @@ private:
 
   bool ForceOld(const std::string& source) const;
 
+  void GetCSharpSourceProperties(cmSourceFile const* sf,
+                                 std::map<std::string, std::string>& tags);
+  void WriteCSharpSourceProperties(
+    const std::map<std::string, std::string>& tags);
+  void GetCSharpSourceLink(cmSourceFile const* sf, std::string& link);
+
 private:
   typedef cmVisualStudioGeneratorOptions Options;
   typedef std::map<std::string, Options*> OptionsMap;
@@ -187,6 +204,7 @@ private:
   cmGeneratedFileStream* BuildFileStream;
   cmLocalVisualStudio7Generator* LocalGenerator;
   std::set<cmSourceFile const*> SourcesVisited;
+  std::set<std::string> CSharpCustomCommandNames;
   bool IsMissingFiles;
   std::vector<std::string> AddedFiles;
   std::string DefaultArtifactDir;
diff --git a/Source/cmVisualStudio10ToolsetOptions.h b/Source/cmVisualStudio10ToolsetOptions.h
index 4233337ba..c736a49f5 100644
--- a/Source/cmVisualStudio10ToolsetOptions.h
+++ b/Source/cmVisualStudio10ToolsetOptions.h
@@ -3,7 +3,7 @@
 #ifndef cmVisualStudio10ToolsetOptions_h
 #define cmVisualStudio10ToolsetOptions_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 
diff --git a/Source/cmVisualStudioGeneratorOptions.cxx b/Source/cmVisualStudioGeneratorOptions.cxx
index 1f808c8b2..b1686bec1 100644
--- a/Source/cmVisualStudioGeneratorOptions.cxx
+++ b/Source/cmVisualStudioGeneratorOptions.cxx
@@ -89,7 +89,7 @@ void cmVisualStudioGeneratorOptions::AddTable(cmVS7FlagTable const* table)
 void cmVisualStudioGeneratorOptions::ClearTables()
 {
   for (int i = 0; i < FlagTableCount; ++i) {
-    this->FlagTable[i] = CM_NULLPTR;
+    this->FlagTable[i] = nullptr;
   }
 }
 
@@ -256,6 +256,74 @@ void cmVisualStudioGeneratorOptions::FixCudaCodeGeneration()
   }
 }
 
+void cmVisualStudioGeneratorOptions::FixManifestUACFlags()
+{
+  static const char* ENABLE_UAC = "EnableUAC";
+  if (!HasFlag(ENABLE_UAC)) {
+    return;
+  }
+
+  const std::string uacFlag = GetFlag(ENABLE_UAC);
+  std::vector<std::string> subOptions;
+  cmsys::SystemTools::Split(uacFlag, subOptions, ' ');
+  if (subOptions.empty()) {
+    AddFlag(ENABLE_UAC, "true");
+    return;
+  }
+
+  if (subOptions.size() == 1 && subOptions[0] == "NO") {
+    AddFlag(ENABLE_UAC, "false");
+    return;
+  }
+
+  std::map<std::string, std::string> uacMap;
+  uacMap["level"] = "UACExecutionLevel";
+  uacMap["uiAccess"] = "UACUIAccess";
+
+  std::map<std::string, std::string> uacExecuteLevelMap;
+  uacExecuteLevelMap["asInvoker"] = "AsInvoker";
+  uacExecuteLevelMap["highestAvailable"] = "HighestAvailable";
+  uacExecuteLevelMap["requireAdministrator"] = "RequireAdministrator";
+
+  for (auto const& subopt : subOptions) {
+    std::vector<std::string> keyValue;
+    cmsys::SystemTools::Split(subopt, keyValue, '=');
+    if (keyValue.size() != 2 || (uacMap.find(keyValue[0]) == uacMap.end())) {
+      // ignore none key=value option or unknown flags
+      continue;
+    }
+
+    if (keyValue[1].front() == '\'' && keyValue[1].back() == '\'') {
+      keyValue[1] =
+        keyValue[1].substr(1, std::max<int>(0, keyValue[1].size() - 2));
+    }
+
+    if (keyValue[0] == "level") {
+      if (uacExecuteLevelMap.find(keyValue[1]) == uacExecuteLevelMap.end()) {
+        // unknown level value
+        continue;
+      }
+
+      AddFlag(uacMap[keyValue[0]].c_str(),
+              uacExecuteLevelMap[keyValue[1]].c_str());
+      continue;
+    }
+
+    if (keyValue[0] == "uiAccess") {
+      if (keyValue[1] != "true" && keyValue[1] != "false") {
+        // unknown uiAccess value
+        continue;
+      }
+      AddFlag(uacMap[keyValue[0]].c_str(), keyValue[1].c_str());
+      continue;
+    }
+
+    // unknwon sub option
+  }
+
+  AddFlag(ENABLE_UAC, "true");
+}
+
 void cmVisualStudioGeneratorOptions::Parse(const char* flags)
 {
   // Parse the input string as a windows command line since the string
diff --git a/Source/cmVisualStudioGeneratorOptions.h b/Source/cmVisualStudioGeneratorOptions.h
index 44d271908..7c08a2c30 100644
--- a/Source/cmVisualStudioGeneratorOptions.h
+++ b/Source/cmVisualStudioGeneratorOptions.h
@@ -3,7 +3,7 @@
 #ifndef cmVisualStudioGeneratorOptions_h
 #define cmVisualStudioGeneratorOptions_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <iosfwd>
 #include <string>
@@ -77,6 +77,8 @@ public:
 
   void FixCudaCodeGeneration();
 
+  void FixManifestUACFlags();
+
   bool IsDebug() const;
   bool IsWinRt() const;
   bool IsManaged() const;
diff --git a/Source/cmVisualStudioSlnData.h b/Source/cmVisualStudioSlnData.h
index e12047fb5..9c1dffc05 100644
--- a/Source/cmVisualStudioSlnData.h
+++ b/Source/cmVisualStudioSlnData.h
@@ -3,7 +3,7 @@
 #ifndef cmVisualStudioSlnData_h
 #define cmVisualStudioSlnData_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <map>
 #include <string>
diff --git a/Source/cmVisualStudioSlnParser.cxx b/Source/cmVisualStudioSlnParser.cxx
index 1a32abacf..a9acb3fce 100644
--- a/Source/cmVisualStudioSlnParser.cxx
+++ b/Source/cmVisualStudioSlnParser.cxx
@@ -329,7 +329,7 @@ bool cmVisualStudioSlnParser::State::Process(
     case FileStateIgnore:
       if (line.GetTag() == this->EndIgnoreTag) {
         this->Stack.pop();
-        this->EndIgnoreTag = "";
+        this->EndIgnoreTag.clear();
       }
       break;
     default:
diff --git a/Source/cmVisualStudioSlnParser.h b/Source/cmVisualStudioSlnParser.h
index d51732407..d6345a84d 100644
--- a/Source/cmVisualStudioSlnParser.h
+++ b/Source/cmVisualStudioSlnParser.h
@@ -3,7 +3,7 @@
 #ifndef cmVisualStudioSlnParser_h
 #define cmVisualStudioSlnParser_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <bitset>
 #include <iosfwd>
diff --git a/Source/cmVisualStudioWCEPlatformParser.cxx b/Source/cmVisualStudioWCEPlatformParser.cxx
index fc64d0fb0..3b113aadb 100644
--- a/Source/cmVisualStudioWCEPlatformParser.cxx
+++ b/Source/cmVisualStudioWCEPlatformParser.cxx
@@ -56,12 +56,12 @@ void cmVisualStudioWCEPlatformParser::StartElement(const std::string& name,
     return;
   }
 
-  this->CharacterData = "";
+  this->CharacterData.clear();
 
   if (name == "PlatformData") {
-    this->PlatformName = "";
-    this->OSMajorVersion = "";
-    this->OSMinorVersion = "";
+    this->PlatformName.clear();
+    this->OSMajorVersion.clear();
+    this->OSMinorVersion.clear();
     this->Macros.clear();
   }
 
diff --git a/Source/cmVisualStudioWCEPlatformParser.h b/Source/cmVisualStudioWCEPlatformParser.h
index 75c3d1a39..c19691aa2 100644
--- a/Source/cmVisualStudioWCEPlatformParser.h
+++ b/Source/cmVisualStudioWCEPlatformParser.h
@@ -3,7 +3,7 @@
 #ifndef cmVisualStudioWCEPlatformParser_h
 #define cmVisualStudioWCEPlatformParser_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <map>
 #include <stddef.h>
diff --git a/Source/cmWhileCommand.cxx b/Source/cmWhileCommand.cxx
index 24d7bf1bf..a08003450 100644
--- a/Source/cmWhileCommand.cxx
+++ b/Source/cmWhileCommand.cxx
@@ -7,9 +7,10 @@
 #include "cmExpandedCommandArgument.h"
 #include "cmMakefile.h"
 #include "cmSystemTools.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
+#include <memory> // IWYU pragma: keep
+
 cmWhileFunctionBlocker::cmWhileFunctionBlocker(cmMakefile* mf)
   : Makefile(mf)
   , Depth(0)
@@ -34,7 +35,8 @@ bool cmWhileFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
     // if this is the endwhile for this while loop then execute
     if (!this->Depth) {
       // Remove the function blocker for this scope or bail.
-      CM_AUTO_PTR<cmFunctionBlocker> fb(mf.RemoveFunctionBlocker(this, lff));
+      std::unique_ptr<cmFunctionBlocker> fb(
+        mf.RemoveFunctionBlocker(this, lff));
       if (!fb.get()) {
         return false;
       }
@@ -60,11 +62,10 @@ bool cmWhileFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
       while (isTrue) {
         if (!errorString.empty()) {
           std::string err = "had incorrect arguments: ";
-          unsigned int i;
-          for (i = 0; i < this->Args.size(); ++i) {
-            err += (this->Args[i].Delim ? "\"" : "");
-            err += this->Args[i].Value;
-            err += (this->Args[i].Delim ? "\"" : "");
+          for (cmListFileArgument const& arg : this->Args) {
+            err += (arg.Delim ? "\"" : "");
+            err += arg.Value;
+            err += (arg.Delim ? "\"" : "");
             err += " ";
           }
           err += "(";
@@ -78,9 +79,9 @@ bool cmWhileFunctionBlocker::IsFunctionBlocked(const cmListFileFunction& lff,
         }
 
         // Invoke all the functions that were collected in the block.
-        for (unsigned int c = 0; c < this->Functions.size(); ++c) {
+        for (cmListFileFunction const& fn : this->Functions) {
           cmExecutionStatus status;
-          mf.ExecuteCommand(this->Functions[c], status);
+          mf.ExecuteCommand(fn, status);
           if (status.GetReturnInvoked()) {
             inStatus.SetReturnInvoked();
             return true;
diff --git a/Source/cmWhileCommand.h b/Source/cmWhileCommand.h
index a95e4c30c..6f6d40549 100644
--- a/Source/cmWhileCommand.h
+++ b/Source/cmWhileCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmWhileCommand_h
 #define cmWhileCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -19,10 +19,10 @@ class cmWhileFunctionBlocker : public cmFunctionBlocker
 {
 public:
   cmWhileFunctionBlocker(cmMakefile* mf);
-  ~cmWhileFunctionBlocker() CM_OVERRIDE;
+  ~cmWhileFunctionBlocker() override;
   bool IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile& mf,
-                         cmExecutionStatus&) CM_OVERRIDE;
-  bool ShouldRemove(const cmListFileFunction& lff, cmMakefile& mf) CM_OVERRIDE;
+                         cmExecutionStatus&) override;
+  bool ShouldRemove(const cmListFileFunction& lff, cmMakefile& mf) override;
 
   std::vector<cmListFileArgument> Args;
   std::vector<cmListFileFunction> Functions;
@@ -39,21 +39,21 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmWhileCommand; }
+  cmCommand* Clone() override { return new cmWhileCommand; }
 
   /**
    * This overrides the default InvokeInitialPass implementation.
    * It records the arguments before expansion.
    */
   bool InvokeInitialPass(const std::vector<cmListFileArgument>& args,
-                         cmExecutionStatus&) CM_OVERRIDE;
+                         cmExecutionStatus&) override;
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const&,
-                   cmExecutionStatus&) CM_OVERRIDE
+                   cmExecutionStatus&) override
   {
     return false;
   }
diff --git a/Source/cmWriteFileCommand.h b/Source/cmWriteFileCommand.h
index 19922cdf3..9028f84aa 100644
--- a/Source/cmWriteFileCommand.h
+++ b/Source/cmWriteFileCommand.h
@@ -3,7 +3,7 @@
 #ifndef cmWriteFileCommand_h
 #define cmWriteFileCommand_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <string>
 #include <vector>
@@ -22,14 +22,14 @@ public:
   /**
    * This is a virtual constructor for the command.
    */
-  cmCommand* Clone() CM_OVERRIDE { return new cmWriteFileCommand; }
+  cmCommand* Clone() override { return new cmWriteFileCommand; }
 
   /**
    * This is called when the command is first encountered in
    * the CMakeLists.txt file.
    */
   bool InitialPass(std::vector<std::string> const& args,
-                   cmExecutionStatus& status) CM_OVERRIDE;
+                   cmExecutionStatus& status) override;
 };
 
 #endif
diff --git a/Source/cmXCode21Object.cxx b/Source/cmXCode21Object.cxx
index 719e62765..a9bb2ef54 100644
--- a/Source/cmXCode21Object.cxx
+++ b/Source/cmXCode21Object.cxx
@@ -34,9 +34,7 @@ void cmXCode21Object::PrintList(std::vector<cmXCodeObject*> const& v,
                                 std::ostream& out, PBXType t)
 {
   bool hasOne = false;
-  for (std::vector<cmXCodeObject*>::const_iterator i = v.begin(); i != v.end();
-       ++i) {
-    cmXCodeObject* obj = *i;
+  for (auto obj : v) {
     if (obj->GetType() == OBJECT && obj->GetIsA() == t) {
       hasOne = true;
       break;
@@ -46,9 +44,7 @@ void cmXCode21Object::PrintList(std::vector<cmXCodeObject*> const& v,
     return;
   }
   out << "\n/* Begin " << PBXTypeNames[t] << " section */\n";
-  for (std::vector<cmXCodeObject*>::const_iterator i = v.begin(); i != v.end();
-       ++i) {
-    cmXCodeObject* obj = *i;
+  for (auto obj : v) {
     if (obj->GetType() == OBJECT && obj->GetIsA() == t) {
       obj->Print(out);
     }
diff --git a/Source/cmXCode21Object.h b/Source/cmXCode21Object.h
index bcd8d93e1..8e4b80fc1 100644
--- a/Source/cmXCode21Object.h
+++ b/Source/cmXCode21Object.h
@@ -14,7 +14,7 @@ class cmXCode21Object : public cmXCodeObject
 {
 public:
   cmXCode21Object(PBXType ptype, Type type);
-  virtual void PrintComment(std::ostream&);
+  void PrintComment(std::ostream&) override;
   static void PrintList(std::vector<cmXCodeObject*> const&, std::ostream& out,
                         PBXType t);
   static void PrintList(std::vector<cmXCodeObject*> const&, std::ostream& out);
diff --git a/Source/cmXCodeObject.cxx b/Source/cmXCodeObject.cxx
index 0def8c321..e54f1f356 100644
--- a/Source/cmXCodeObject.cxx
+++ b/Source/cmXCodeObject.cxx
@@ -42,8 +42,8 @@ cmXCodeObject::~cmXCodeObject()
 cmXCodeObject::cmXCodeObject(PBXType ptype, Type type)
 {
   this->Version = 15;
-  this->Target = 0;
-  this->Object = 0;
+  this->Target = nullptr;
+  this->Object = nullptr;
 
   this->IsA = ptype;
 
@@ -71,7 +71,7 @@ cmXCodeObject::cmXCodeObject(PBXType ptype, Type type)
 
   this->TypeValue = type;
   if (this->TypeValue == OBJECT) {
-    this->AddAttribute("isa", 0);
+    this->AddAttribute("isa", nullptr);
   }
 }
 
@@ -86,7 +86,7 @@ bool cmXCodeObject::IsEmpty() const
       return this->ObjectAttributes.empty();
     case OBJECT_REF:
     case OBJECT:
-      return this->Object == 0;
+      return this->Object == nullptr;
   }
   return true; // unreachable, but quiets warnings
 }
@@ -120,8 +120,9 @@ void cmXCodeObject::Print(std::ostream& out)
   out << "isa = " << PBXTypeNames[this->IsA] << ";" << separator;
   for (i = this->ObjectAttributes.begin(); i != this->ObjectAttributes.end();
        ++i) {
-    if (i->first == "isa")
+    if (i->first == "isa") {
       continue;
+    }
 
     PrintAttribute(out, 3, separator, indentFactor, i->first, i->second, this);
   }
@@ -129,9 +130,9 @@ void cmXCodeObject::Print(std::ostream& out)
   out << "};\n";
 }
 
-void cmXCodeObject::PrintAttribute(std::ostream& out, const int level,
-                                   const std::string separator,
-                                   const int factor, const std::string& name,
+void cmXCodeObject::PrintAttribute(std::ostream& out, int level,
+                                   const std::string& separator, int factor,
+                                   const std::string& name,
                                    const cmXCodeObject* object,
                                    const cmXCodeObject* parent)
 {
@@ -203,9 +204,9 @@ void cmXCodeObject::PrintList(std::vector<cmXCodeObject*> const& objs,
 {
   cmXCodeObject::Indent(1, out);
   out << "objects = {\n";
-  for (unsigned int i = 0; i < objs.size(); ++i) {
-    if (objs[i]->TypeValue == OBJECT) {
-      objs[i]->Print(out);
+  for (auto obj : objs) {
+    if (obj->TypeValue == OBJECT) {
+      obj->Print(out);
     }
   }
   cmXCodeObject::Indent(1, out);
diff --git a/Source/cmXCodeObject.h b/Source/cmXCodeObject.h
index b92e6e33e..b0f1d31af 100644
--- a/Source/cmXCodeObject.h
+++ b/Source/cmXCodeObject.h
@@ -94,8 +94,8 @@ public:
   }
   static void Indent(int level, std::ostream& out);
   void Print(std::ostream& out);
-  void PrintAttribute(std::ostream& out, const int level,
-                      const std::string separator, const int factor,
+  void PrintAttribute(std::ostream& out, int level,
+                      const std::string& separator, int factor,
                       const std::string& name, const cmXCodeObject* object,
                       const cmXCodeObject* parent);
   virtual void PrintComment(std::ostream&) {}
@@ -114,19 +114,17 @@ public:
     if (i != this->ObjectAttributes.end()) {
       return i->second;
     }
-    return 0;
+    return nullptr;
   }
   // search the attribute list for an object of the specified type
   cmXCodeObject* GetObject(cmXCodeObject::PBXType t) const
   {
-    for (std::vector<cmXCodeObject*>::const_iterator i = this->List.begin();
-         i != this->List.end(); ++i) {
-      cmXCodeObject* o = *i;
+    for (auto o : this->List) {
       if (o->IsA == t) {
         return o;
       }
     }
-    return 0;
+    return nullptr;
   }
 
   void CopyAttributes(cmXCodeObject*);
diff --git a/Source/cmXCodeScheme.cxx b/Source/cmXCodeScheme.cxx
index 5c22531d4..f1dce6420 100644
--- a/Source/cmXCodeScheme.cxx
+++ b/Source/cmXCodeScheme.cxx
@@ -10,13 +10,12 @@
 #include "cmGeneratorTarget.h"
 #include "cmXMLSafe.h"
 
-cmXCodeScheme::cmXCodeScheme(cmXCodeObject* xcObj,
+cmXCodeScheme::cmXCodeScheme(cmXCodeObject* xcObj, const TestObjects& tests,
                              const std::vector<std::string>& configList,
                              unsigned int xcVersion)
   : Target(xcObj)
+  , Tests(tests)
   , TargetName(xcObj->GetTarget()->GetName())
-  , BuildableName(xcObj->GetTarget()->GetFullName())
-  , TargetId(xcObj->GetId())
   , ConfigList(configList)
   , XcodeVersion(xcVersion)
 {
@@ -58,7 +57,7 @@ void cmXCodeScheme::WriteXCodeXCScheme(std::ostream& fout,
   xout.Attribute("version", "1.3");
 
   WriteBuildAction(xout, container);
-  WriteTestAction(xout, FindConfiguration("Debug"));
+  WriteTestAction(xout, FindConfiguration("Debug"), container);
   WriteLaunchAction(xout, FindConfiguration("Debug"), container);
   WriteProfileAction(xout, FindConfiguration("Release"));
   WriteAnalyzeAction(xout, FindConfiguration("Debug"));
@@ -84,14 +83,7 @@ void cmXCodeScheme::WriteBuildAction(cmXMLWriter& xout,
   xout.Attribute("buildForArchiving", "YES");
   xout.Attribute("buildForAnalyzing", "YES");
 
-  xout.StartElement("BuildableReference");
-  xout.BreakAttributes();
-  xout.Attribute("BuildableIdentifier", "primary");
-  xout.Attribute("BlueprintIdentifier", this->TargetId);
-  xout.Attribute("BuildableName", this->BuildableName);
-  xout.Attribute("BlueprintName", this->TargetName);
-  xout.Attribute("ReferencedContainer", "container:" + container);
-  xout.EndElement();
+  WriteBuildableReference(xout, this->Target, container);
 
   xout.EndElement(); // BuildActionEntry
   xout.EndElement(); // BuildActionEntries
@@ -99,7 +91,8 @@ void cmXCodeScheme::WriteBuildAction(cmXMLWriter& xout,
 }
 
 void cmXCodeScheme::WriteTestAction(cmXMLWriter& xout,
-                                    std::string configuration)
+                                    const std::string& configuration,
+                                    const std::string& container)
 {
   xout.StartElement("TestAction");
   xout.BreakAttributes();
@@ -111,8 +104,21 @@ void cmXCodeScheme::WriteTestAction(cmXMLWriter& xout,
   xout.Attribute("shouldUseLaunchSchemeArgsEnv", "YES");
 
   xout.StartElement("Testables");
+  for (auto test : this->Tests) {
+    xout.StartElement("TestableReference");
+    xout.BreakAttributes();
+    xout.Attribute("skipped", "NO");
+    WriteBuildableReference(xout, test, container);
+    xout.EndElement(); // TestableReference
+  }
   xout.EndElement();
 
+  if (IsTestable()) {
+    xout.StartElement("MacroExpansion");
+    WriteBuildableReference(xout, this->Target, container);
+    xout.EndElement(); // MacroExpansion
+  }
+
   xout.StartElement("AdditionalOptions");
   xout.EndElement();
 
@@ -120,7 +126,7 @@ void cmXCodeScheme::WriteTestAction(cmXMLWriter& xout,
 }
 
 void cmXCodeScheme::WriteLaunchAction(cmXMLWriter& xout,
-                                      std::string configuration,
+                                      const std::string& configuration,
                                       const std::string& container)
 {
   xout.StartElement("LaunchAction");
@@ -146,14 +152,7 @@ void cmXCodeScheme::WriteLaunchAction(cmXMLWriter& xout,
     xout.StartElement("MacroExpansion");
   }
 
-  xout.StartElement("BuildableReference");
-  xout.BreakAttributes();
-  xout.Attribute("BuildableIdentifier", "primary");
-  xout.Attribute("BlueprintIdentifier", this->TargetId);
-  xout.Attribute("BuildableName", this->BuildableName);
-  xout.Attribute("BlueprintName", this->TargetName);
-  xout.Attribute("ReferencedContainer", "container:" + container);
-  xout.EndElement();
+  WriteBuildableReference(xout, this->Target, container);
 
   xout.EndElement(); // MacroExpansion
 
@@ -164,7 +163,7 @@ void cmXCodeScheme::WriteLaunchAction(cmXMLWriter& xout,
 }
 
 void cmXCodeScheme::WriteProfileAction(cmXMLWriter& xout,
-                                       std::string configuration)
+                                       const std::string& configuration)
 {
   xout.StartElement("ProfileAction");
   xout.BreakAttributes();
@@ -177,7 +176,7 @@ void cmXCodeScheme::WriteProfileAction(cmXMLWriter& xout,
 }
 
 void cmXCodeScheme::WriteAnalyzeAction(cmXMLWriter& xout,
-                                       std::string configuration)
+                                       const std::string& configuration)
 {
   xout.StartElement("AnalyzeAction");
   xout.BreakAttributes();
@@ -186,7 +185,7 @@ void cmXCodeScheme::WriteAnalyzeAction(cmXMLWriter& xout,
 }
 
 void cmXCodeScheme::WriteArchiveAction(cmXMLWriter& xout,
-                                       std::string configuration)
+                                       const std::string& configuration)
 {
   xout.StartElement("ArchiveAction");
   xout.BreakAttributes();
@@ -195,6 +194,20 @@ void cmXCodeScheme::WriteArchiveAction(cmXMLWriter& xout,
   xout.EndElement();
 }
 
+void cmXCodeScheme::WriteBuildableReference(cmXMLWriter& xout,
+                                            const cmXCodeObject* xcObj,
+                                            const std::string& container)
+{
+  xout.StartElement("BuildableReference");
+  xout.BreakAttributes();
+  xout.Attribute("BuildableIdentifier", "primary");
+  xout.Attribute("BlueprintIdentifier", xcObj->GetId());
+  xout.Attribute("BuildableName", xcObj->GetTarget()->GetFullName());
+  xout.Attribute("BlueprintName", xcObj->GetTarget()->GetName());
+  xout.Attribute("ReferencedContainer", "container:" + container);
+  xout.EndElement();
+}
+
 std::string cmXCodeScheme::WriteVersionString()
 {
   std::ostringstream v;
@@ -209,12 +222,18 @@ std::string cmXCodeScheme::FindConfiguration(const std::string& name)
   //
   if (std::find(this->ConfigList.begin(), this->ConfigList.end(), name) ==
         this->ConfigList.end() &&
-      this->ConfigList.size() > 0)
+      !this->ConfigList.empty()) {
     return this->ConfigList[0];
+  }
 
   return name;
 }
 
+bool cmXCodeScheme::IsTestable() const
+{
+  return !this->Tests.empty() || IsExecutable(this->Target);
+}
+
 bool cmXCodeScheme::IsExecutable(const cmXCodeObject* target)
 {
   cmGeneratorTarget* gt = target->GetTarget();
diff --git a/Source/cmXCodeScheme.h b/Source/cmXCodeScheme.h
index 379afed42..e5e501a6f 100644
--- a/Source/cmXCodeScheme.h
+++ b/Source/cmXCodeScheme.h
@@ -5,6 +5,8 @@
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
+#include <vector>
+
 #include "cmGlobalXCodeGenerator.h"
 #include "cmSystemTools.h"
 #include "cmXCodeObject.h"
@@ -16,7 +18,9 @@
 class cmXCodeScheme
 {
 public:
-  cmXCodeScheme(cmXCodeObject* xcObj,
+  typedef std::vector<const cmXCodeObject*> TestObjects;
+
+  cmXCodeScheme(cmXCodeObject* xcObj, const TestObjects& tests,
                 const std::vector<std::string>& configList,
                 unsigned int xcVersion);
 
@@ -25,25 +29,30 @@ public:
 
 private:
   const cmXCodeObject* const Target;
+  const TestObjects Tests;
   const std::string& TargetName;
-  const std::string BuildableName;
-  const std::string& TargetId;
   const std::vector<std::string>& ConfigList;
   const unsigned int XcodeVersion;
 
   void WriteXCodeXCScheme(std::ostream& fout, const std::string& container);
 
   void WriteBuildAction(cmXMLWriter& xout, const std::string& container);
-  void WriteTestAction(cmXMLWriter& xout, std::string configuration);
-  void WriteLaunchAction(cmXMLWriter& xout, std::string configuration,
+  void WriteTestAction(cmXMLWriter& xout, const std::string& configuration,
+                       const std::string& container);
+  void WriteLaunchAction(cmXMLWriter& xout, const std::string& configuration,
                          const std::string& container);
-  void WriteProfileAction(cmXMLWriter& xout, std::string configuration);
-  void WriteAnalyzeAction(cmXMLWriter& xout, std::string configuration);
-  void WriteArchiveAction(cmXMLWriter& xout, std::string configuration);
+  void WriteProfileAction(cmXMLWriter& xout, const std::string& configuration);
+  void WriteAnalyzeAction(cmXMLWriter& xout, const std::string& configuration);
+  void WriteArchiveAction(cmXMLWriter& xout, const std::string& configuration);
+
+  void WriteBuildableReference(cmXMLWriter& xout, const cmXCodeObject* xcObj,
+                               const std::string& container);
 
   std::string WriteVersionString();
   std::string FindConfiguration(const std::string& name);
 
+  bool IsTestable() const;
+
   static bool IsExecutable(const cmXCodeObject* target);
 };
 
diff --git a/Source/cmXMLParser.cxx b/Source/cmXMLParser.cxx
index 18afbf370..920e3a5e9 100644
--- a/Source/cmXMLParser.cxx
+++ b/Source/cmXMLParser.cxx
@@ -11,10 +11,10 @@
 
 cmXMLParser::cmXMLParser()
 {
-  this->Parser = CM_NULLPTR;
+  this->Parser = nullptr;
   this->ParseError = 0;
-  this->ReportCallback = CM_NULLPTR;
-  this->ReportCallbackData = CM_NULLPTR;
+  this->ReportCallback = nullptr;
+  this->ReportCallbackData = nullptr;
 }
 
 cmXMLParser::~cmXMLParser()
@@ -26,7 +26,7 @@ cmXMLParser::~cmXMLParser()
 
 int cmXMLParser::Parse(const char* string)
 {
-  return (int)this->InitializeParser() &&
+  return this->InitializeParser() &&
     this->ParseChunk(string, strlen(string)) && this->CleanupParser();
 }
 
@@ -55,7 +55,7 @@ int cmXMLParser::InitializeParser()
   }
 
   // Create the expat XML parser.
-  this->Parser = XML_ParserCreate(CM_NULLPTR);
+  this->Parser = XML_ParserCreate(nullptr);
   XML_SetElementHandler(static_cast<XML_Parser>(this->Parser),
                         &cmXMLParserStartElement, &cmXMLParserEndElement);
   XML_SetCharacterDataHandler(static_cast<XML_Parser>(this->Parser),
@@ -99,7 +99,7 @@ int cmXMLParser::CleanupParser()
 
   // Clean up the parser.
   XML_ParserFree(static_cast<XML_Parser>(this->Parser));
-  this->Parser = CM_NULLPTR;
+  this->Parser = nullptr;
 
   return result;
 }
@@ -156,7 +156,7 @@ const char* cmXMLParser::FindAttribute(const char** atts,
       }
     }
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 void cmXMLParserStartElement(void* parser, const char* name, const char** atts)
diff --git a/Source/cmXMLWriter.h b/Source/cmXMLWriter.h
index ed76a88c7..981255d41 100644
--- a/Source/cmXMLWriter.h
+++ b/Source/cmXMLWriter.h
@@ -3,7 +3,7 @@
 #ifndef cmXMLWiter_h
 #define cmXMLWiter_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include "cmXMLSafe.h"
 
@@ -107,7 +107,7 @@ private:
 
 private:
   std::ostream& Output;
-  std::stack<std::string, std::vector<std::string> > Elements;
+  std::stack<std::string, std::vector<std::string>> Elements;
   std::string IndentationElement;
   std::size_t Level;
   bool ElementOpen;
diff --git a/Source/cm_auto_ptr.hxx b/Source/cm_auto_ptr.hxx
deleted file mode 100644
index 773602af9..000000000
--- a/Source/cm_auto_ptr.hxx
+++ /dev/null
@@ -1,220 +0,0 @@
-/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
-   file Copyright.txt or https://cmake.org/licensing for details.  */
-#ifndef CM_AUTO_PTR_HXX
-#define CM_AUTO_PTR_HXX
-
-#include "cmConfigure.h"
-
-#ifdef CMake_HAVE_CXX_AUTO_PTR
-
-#include <memory>
-#define CM_AUTO_PTR std::auto_ptr
-
-#else
-
-#define CM_AUTO_PTR cm::auto_ptr
-
-// The HP compiler cannot handle the conversions necessary to use
-// auto_ptr_ref to pass an auto_ptr returned from one function
-// directly to another function as in use_auto_ptr(get_auto_ptr()).
-// We instead use const_cast to achieve the syntax on those platforms.
-// We do not use const_cast on other platforms to maintain the C++
-// standard design and guarantee that if an auto_ptr is bound
-// to a reference-to-const then ownership will be maintained.
-#if defined(__HP_aCC)
-#define cm_AUTO_PTR_REF 0
-#define cm_AUTO_PTR_CONST const
-#define cm_AUTO_PTR_CAST(a) cast(a)
-#else
-#define cm_AUTO_PTR_REF 1
-#define cm_AUTO_PTR_CONST
-#define cm_AUTO_PTR_CAST(a) a
-#endif
-
-// In C++11, clang will warn about using dynamic exception specifications
-// as they are deprecated.  But as this class is trying to faithfully
-// mimic std::auto_ptr, we want to keep the 'throw()' decorations below.
-// So we suppress the warning.
-#if defined(__clang__) && defined(__has_warning)
-#if __has_warning("-Wdeprecated")
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wdeprecated"
-#endif
-#endif
-
-namespace cm {
-
-template <class X>
-class auto_ptr;
-
-#if cm_AUTO_PTR_REF
-namespace detail {
-// The auto_ptr_ref template is supposed to be a private member of
-// auto_ptr but Borland 5.8 cannot handle it.  Instead put it in
-// a private namespace.
-template <class Y>
-struct auto_ptr_ref
-{
-  Y* p_;
-
-  // The extra constructor argument prevents implicit conversion to
-  // auto_ptr_ref from auto_ptr through the constructor.  Normally
-  // this should be done with the explicit keyword but Borland 5.x
-  // generates code in the conversion operator to call itself
-  // infinately.
-  auto_ptr_ref(Y* p, int)
-    : p_(p)
-  {
-  }
-};
-}
-#endif
-
-/** C++98 Standard Section 20.4.5 - Template class auto_ptr.  */
-template <class X>
-class auto_ptr
-{
-#if !cm_AUTO_PTR_REF
-  template <typename Y>
-  static inline auto_ptr<Y>& cast(auto_ptr<Y> const& a)
-  {
-    return const_cast<auto_ptr<Y>&>(a);
-  }
-#endif
-
-  /** The pointer to the object held.  */
-  X* x_;
-
-public:
-  /** The type of object held by the auto_ptr.  */
-  typedef X element_type;
-
-  /** Construct from an auto_ptr holding a compatible object.  This
-      transfers ownership to the newly constructed auto_ptr.  */
-  template <class Y>
-  auto_ptr(auto_ptr<Y> cm_AUTO_PTR_CONST& a) throw()
-    : x_(cm_AUTO_PTR_CAST(a).release())
-  {
-  }
-
-  /** Assign from an auto_ptr holding a compatible object.  This
-      transfers ownership to the left-hand-side of the assignment.  */
-  template <class Y>
-  auto_ptr& operator=(auto_ptr<Y> cm_AUTO_PTR_CONST& a) throw() // NOLINT
-  {
-    this->reset(cm_AUTO_PTR_CAST(a).release());
-    return *this; // NOLINT
-  }
-
-  /**
-   * Explicitly construct from a raw pointer.  This is typically
-   * called with the result of operator new.  For example:
-   *
-   *   auto_ptr<X> ptr(new X());
-   */
-  explicit auto_ptr(X* p = CM_NULLPTR) throw()
-    : x_(p)
-  {
-  }
-
-  /** Construct from another auto_ptr holding an object of the same
-      type.  This transfers ownership to the newly constructed
-      auto_ptr.  */
-  auto_ptr(auto_ptr cm_AUTO_PTR_CONST& a) throw()
-    : x_(cm_AUTO_PTR_CAST(a).release())
-  {
-  }
-
-  /** Assign from another auto_ptr holding an object of the same type.
-      This transfers ownership to the newly constructed auto_ptr.  */
-  auto_ptr& operator=(auto_ptr cm_AUTO_PTR_CONST& a) throw() // NOLINT
-  {
-    this->reset(cm_AUTO_PTR_CAST(a).release());
-    return *this; // NOLINT
-  }
-
-  /** Destruct and delete the object held.  */
-  ~auto_ptr() throw()
-  {
-    // Assume object destructor is nothrow.
-    delete this->x_;
-  }
-
-  /** Dereference and return a reference to the object held.  */
-  X& operator*() const throw() { return *this->x_; }
-
-  /** Return a pointer to the object held.  */
-  X* operator->() const throw() { return this->x_; }
-
-  /** Return a pointer to the object held.  */
-  X* get() const throw() { return this->x_; }
-
-  /** Return a pointer to the object held and reset to hold no object.
-      This transfers ownership to the caller.  */
-  X* release() throw()
-  {
-    X* x = this->x_;
-    this->x_ = CM_NULLPTR;
-    return x;
-  }
-
-  /** Assume ownership of the given object.  The object previously
-      held is deleted.  */
-  void reset(X* p = 0) throw()
-  {
-    if (this->x_ != p) {
-      // Assume object destructor is nothrow.
-      delete this->x_;
-      this->x_ = p;
-    }
-  }
-
-  /** Convert to an auto_ptr holding an object of a compatible type.
-      This transfers ownership to the returned auto_ptr.  */
-  template <class Y>
-  operator auto_ptr<Y>() throw()
-  {
-    return auto_ptr<Y>(this->release());
-  }
-
-#if cm_AUTO_PTR_REF
-  /** Construct from an auto_ptr_ref.  This is used when the
-      constructor argument is a call to a function returning an
-      auto_ptr.  */
-  auto_ptr(detail::auto_ptr_ref<X> r) throw()
-    : x_(r.p_)
-  {
-  }
-
-  /** Assign from an auto_ptr_ref.  This is used when a function
-      returning an auto_ptr is passed on the right-hand-side of an
-      assignment.  */
-  auto_ptr& operator=(detail::auto_ptr_ref<X> r) throw()
-  {
-    this->reset(r.p_);
-    return *this; // NOLINT
-  }
-
-  /** Convert to an auto_ptr_ref.  This is used when a function
-      returning an auto_ptr is the argument to the constructor of
-      another auto_ptr.  */
-  template <class Y>
-  operator detail::auto_ptr_ref<Y>() throw()
-  {
-    return detail::auto_ptr_ref<Y>(this->release(), 1);
-  }
-#endif
-};
-
-} // namespace cm
-
-// Undo warning suppression.
-#if defined(__clang__) && defined(__has_warning)
-#if __has_warning("-Wdeprecated")
-#pragma clang diagnostic pop
-#endif
-#endif
-
-#endif
-
-#endif
diff --git a/Source/cm_codecvt.hxx b/Source/cm_codecvt.hxx
index 30c6d5407..3a5606b3d 100644
--- a/Source/cm_codecvt.hxx
+++ b/Source/cm_codecvt.hxx
@@ -3,7 +3,7 @@
 #ifndef cm_codecvt_hxx
 #define cm_codecvt_hxx
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <locale>
 #include <wchar.h>
@@ -23,15 +23,15 @@ public:
   codecvt(Encoding e);
 
 protected:
-  ~codecvt() CM_OVERRIDE;
-  bool do_always_noconv() const throw() CM_OVERRIDE;
+  ~codecvt() override;
+  bool do_always_noconv() const throw() override;
   result do_out(mbstate_t& state, const char* from, const char* from_end,
                 const char*& from_next, char* to, char* to_end,
-                char*& to_next) const CM_OVERRIDE;
+                char*& to_next) const override;
   result do_unshift(mbstate_t& state, char* to, char*,
-                    char*& to_next) const CM_OVERRIDE;
-  int do_max_length() const throw() CM_OVERRIDE;
-  int do_encoding() const throw() CM_OVERRIDE;
+                    char*& to_next) const override;
+  int do_max_length() const throw() override;
+  int do_encoding() const throw() override;
 
 private:
   // The mbstate_t argument to do_out and do_unshift is responsible
diff --git a/Source/cm_sys_stat.h b/Source/cm_sys_stat.h
index 26e4baa03..796f027c1 100644
--- a/Source/cm_sys_stat.h
+++ b/Source/cm_sys_stat.h
@@ -7,6 +7,11 @@
 typedef unsigned short mode_t;
 #endif
 
+#if defined(WIN32)
+typedef unsigned short uid_t;
+typedef unsigned short gid_t;
+#endif
+
 #include <sys/types.h>
 // include sys/stat.h after sys/types.h
 #include <sys/stat.h>
diff --git a/Source/cm_unordered_map.hxx b/Source/cm_unordered_map.hxx
deleted file mode 100644
index bf3890314..000000000
--- a/Source/cm_unordered_map.hxx
+++ /dev/null
@@ -1,25 +0,0 @@
-/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
-   file Copyright.txt or https://cmake.org/licensing for details.  */
-#ifndef CM_UNORDERED_MAP_HXX
-#define CM_UNORDERED_MAP_HXX
-
-#include "cmConfigure.h"
-
-#if defined(CMake_HAVE_CXX_UNORDERED_MAP)
-
-#include <unordered_map>
-#define CM_UNORDERED_MAP std::unordered_map
-
-#elif defined(CMAKE_BUILD_WITH_CMAKE)
-
-#include "cmsys/hash_map.hxx"
-#define CM_UNORDERED_MAP cmsys::hash_map
-
-#else
-
-#include <map>
-#define CM_UNORDERED_MAP std::map
-
-#endif
-
-#endif
diff --git a/Source/cm_unordered_set.hxx b/Source/cm_unordered_set.hxx
deleted file mode 100644
index dd1a9a115..000000000
--- a/Source/cm_unordered_set.hxx
+++ /dev/null
@@ -1,25 +0,0 @@
-/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
-   file Copyright.txt or https://cmake.org/licensing for details.  */
-#ifndef CM_UNORDERED_SET_HXX
-#define CM_UNORDERED_SET_HXX
-
-#include "cmConfigure.h"
-
-#if defined(CMake_HAVE_CXX_UNORDERED_SET)
-
-#include <unordered_set>
-#define CM_UNORDERED_SET std::unordered_set
-
-#elif defined(CMAKE_BUILD_WITH_CMAKE)
-
-#include "cmsys/hash_set.hxx"
-#define CM_UNORDERED_SET cmsys::hash_set
-
-#else
-
-#include <set>
-#define CM_UNORDERED_SET std::set
-
-#endif
-
-#endif
diff --git a/Source/cmake.cxx b/Source/cmake.cxx
index 689439378..fd7151f08 100644
--- a/Source/cmake.cxx
+++ b/Source/cmake.cxx
@@ -24,7 +24,6 @@
 #include "cmUtils.hxx"
 #include "cmVersionConfig.h"
 #include "cmWorkingDirectory.h"
-#include "cm_auto_ptr.hxx"
 #include "cm_sys_stat.h"
 
 #if defined(CMAKE_BUILD_WITH_CMAKE)
@@ -32,7 +31,7 @@
 
 #include "cmGraphVizWriter.h"
 #include "cmVariableWatch.h"
-#include "cm_unordered_map.hxx"
+#include <unordered_map>
 #endif
 
 // only build kdevelop generator on non-windows platforms
@@ -111,6 +110,7 @@
 #include "cmsys/RegularExpression.hxx"
 #include <algorithm>
 #include <iostream>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
@@ -120,7 +120,7 @@
 namespace {
 
 #if defined(CMAKE_BUILD_WITH_CMAKE)
-typedef CM_UNORDERED_MAP<std::string, Json::Value> JsonValueMapType;
+typedef std::unordered_map<std::string, Json::Value> JsonValueMapType;
 #endif
 
 } // namespace
@@ -163,9 +163,9 @@ cmake::cmake(Role role)
   }
 #endif
 
-  this->GlobalGenerator = CM_NULLPTR;
-  this->ProgressCallback = CM_NULLPTR;
-  this->ProgressCallbackClientData = CM_NULLPTR;
+  this->GlobalGenerator = nullptr;
+  this->ProgressCallback = nullptr;
+  this->ProgressCallbackClientData = nullptr;
   this->CurrentWorkingMode = NORMAL_MODE;
 
 #ifdef CMAKE_BUILD_WITH_CMAKE
@@ -215,7 +215,7 @@ cmake::~cmake()
   delete this->Messenger;
   if (this->GlobalGenerator) {
     delete this->GlobalGenerator;
-    this->GlobalGenerator = CM_NULLPTR;
+    this->GlobalGenerator = nullptr;
   }
   cmDeleteAll(this->Generators);
 #ifdef CMAKE_BUILD_WITH_CMAKE
@@ -244,31 +244,28 @@ Json::Value cmake::ReportCapabilitiesJson(bool haveServerMode) const
   this->GetRegisteredGenerators(generatorInfoList);
 
   JsonValueMapType generatorMap;
-  for (std::vector<cmake::GeneratorInfo>::const_iterator i =
-         generatorInfoList.begin();
-       i != generatorInfoList.end(); ++i) {
-    if (i->isAlias) { // skip aliases, they are there for compatibility reasons
+  for (cmake::GeneratorInfo const& gi : generatorInfoList) {
+    if (gi.isAlias) { // skip aliases, they are there for compatibility reasons
                       // only
       continue;
     }
 
-    if (i->extraName.empty()) {
+    if (gi.extraName.empty()) {
       Json::Value gen = Json::objectValue;
-      gen["name"] = i->name;
-      gen["toolsetSupport"] = i->supportsToolset;
-      gen["platformSupport"] = i->supportsPlatform;
+      gen["name"] = gi.name;
+      gen["toolsetSupport"] = gi.supportsToolset;
+      gen["platformSupport"] = gi.supportsPlatform;
       gen["extraGenerators"] = Json::arrayValue;
-      generatorMap[i->name] = gen;
+      generatorMap[gi.name] = gen;
     } else {
-      Json::Value& gen = generatorMap[i->baseName];
-      gen["extraGenerators"].append(i->extraName);
+      Json::Value& gen = generatorMap[gi.baseName];
+      gen["extraGenerators"].append(gi.extraName);
     }
   }
 
   Json::Value generators = Json::arrayValue;
-  for (JsonValueMapType::const_iterator i = generatorMap.begin();
-       i != generatorMap.end(); ++i) {
-    generators.append(i->second);
+  for (auto const& i : generatorMap) {
+    generators.append(i.second);
   }
   obj["generators"] = generators;
   obj["serverMode"] = haveServerMode;
@@ -407,21 +404,18 @@ bool cmake::SetCacheArgs(const std::vector<std::string>& args)
       // removed
       std::vector<std::string> entriesToDelete;
       std::vector<std::string> cacheKeys = this->State->GetCacheEntryKeys();
-      for (std::vector<std::string>::const_iterator it = cacheKeys.begin();
-           it != cacheKeys.end(); ++it) {
-        cmStateEnums::CacheEntryType t = this->State->GetCacheEntryType(*it);
+      for (std::string const& ck : cacheKeys) {
+        cmStateEnums::CacheEntryType t = this->State->GetCacheEntryType(ck);
         if (t != cmStateEnums::STATIC) {
-          if (regex.find(it->c_str())) {
-            entriesToDelete.push_back(*it);
+          if (regex.find(ck.c_str())) {
+            entriesToDelete.push_back(ck);
           }
         }
       }
 
       // now remove them from the cache
-      for (std::vector<std::string>::const_iterator currentEntry =
-             entriesToDelete.begin();
-           currentEntry != entriesToDelete.end(); ++currentEntry) {
-        this->State->RemoveCacheEntry(*currentEntry);
+      for (std::string const& currentEntry : entriesToDelete) {
+        this->State->RemoveCacheEntry(currentEntry);
       }
     } else if (arg.find("-C", 0) == 0) {
       std::string path = arg.substr(2);
@@ -488,15 +482,15 @@ void cmake::ReadListFile(const std::vector<std::string>& args,
     snapshot.GetDirectory().SetCurrentSource(
       cmSystemTools::GetCurrentWorkingDirectory());
     snapshot.SetDefaultDefinitions();
-    CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(gg, snapshot));
+    cmMakefile mf(gg, snapshot);
     if (this->GetWorkingMode() != NORMAL_MODE) {
       std::string file(cmSystemTools::CollapseFullPath(path));
       cmSystemTools::ConvertToUnixSlashes(file);
-      mf->SetScriptModeFile(file.c_str());
+      mf.SetScriptModeFile(file.c_str());
 
-      mf->SetArgcArgv(args);
+      mf.SetArgcArgv(args);
     }
-    if (!mf->ReadListFile(path)) {
+    if (!mf.ReadListFile(path)) {
       cmSystemTools::Error("Error processing file: ", path);
     }
     this->SetHomeDirectory(homeDir);
@@ -555,7 +549,7 @@ bool cmake::FindPackage(const std::vector<std::string>& args)
     gg->CreateGenerationObjects();
     cmLocalGenerator* lg = gg->LocalGenerators[0];
     std::string includeFlags =
-      lg->GetIncludeFlags(includeDirs, CM_NULLPTR, language);
+      lg->GetIncludeFlags(includeDirs, nullptr, language);
 
     std::string definitions = mf->GetSafeDefinition("PACKAGE_DEFINITIONS");
     printf("%s %s\n", includeFlags.c_str(), definitions.c_str());
@@ -568,9 +562,8 @@ bool cmake::FindPackage(const std::vector<std::string>& args)
     std::string libs = mf->GetSafeDefinition("PACKAGE_LIBRARIES");
     std::vector<std::string> libList;
     cmSystemTools::ExpandListArgument(libs, libList);
-    for (std::vector<std::string>::const_iterator libIt = libList.begin();
-         libIt != libList.end(); ++libIt) {
-      tgt->AddLinkLibrary(*mf, *libIt, GENERAL_LibraryType);
+    for (std::string const& lib : libList) {
+      tgt->AddLinkLibrary(*mf, lib, GENERAL_LibraryType);
     }
 
     std::string buildType = mf->GetSafeDefinition("CMAKE_BUILD_TYPE");
@@ -906,49 +899,42 @@ void cmake::AddDefaultExtraGenerators()
 void cmake::GetRegisteredGenerators(
   std::vector<GeneratorInfo>& generators) const
 {
-  for (RegisteredGeneratorsVector::const_iterator i = this->Generators.begin(),
-                                                  e = this->Generators.end();
-       i != e; ++i) {
+  for (cmGlobalGeneratorFactory* gen : this->Generators) {
     std::vector<std::string> names;
-    (*i)->GetGenerators(names);
+    gen->GetGenerators(names);
 
-    for (size_t j = 0; j < names.size(); ++j) {
+    for (std::string const& name : names) {
       GeneratorInfo info;
-      info.supportsToolset = (*i)->SupportsToolset();
-      info.supportsPlatform = (*i)->SupportsPlatform();
-      info.name = names[j];
-      info.baseName = names[j];
+      info.supportsToolset = gen->SupportsToolset();
+      info.supportsPlatform = gen->SupportsPlatform();
+      info.name = name;
+      info.baseName = name;
       info.isAlias = false;
       generators.push_back(info);
     }
   }
 
-  for (RegisteredExtraGeneratorsVector::const_iterator
-         i = this->ExtraGenerators.begin(),
-         e = this->ExtraGenerators.end();
-       i != e; ++i) {
+  for (cmExternalMakefileProjectGeneratorFactory* eg : this->ExtraGenerators) {
     const std::vector<std::string> genList =
-      (*i)->GetSupportedGlobalGenerators();
-    for (std::vector<std::string>::const_iterator gen = genList.begin();
-         gen != genList.end(); ++gen) {
+      eg->GetSupportedGlobalGenerators();
+    for (std::string const& gen : genList) {
       GeneratorInfo info;
       info.name = cmExternalMakefileProjectGenerator::CreateFullGeneratorName(
-        *gen, (*i)->GetName());
-      info.baseName = *gen;
-      info.extraName = (*i)->GetName();
+        gen, eg->GetName());
+      info.baseName = gen;
+      info.extraName = eg->GetName();
       info.supportsPlatform = false;
       info.supportsToolset = false;
       info.isAlias = false;
       generators.push_back(info);
     }
-    for (std::vector<std::string>::const_iterator a = (*i)->Aliases.begin();
-         a != (*i)->Aliases.end(); ++a) {
+    for (std::string const& a : eg->Aliases) {
       GeneratorInfo info;
-      info.name = *a;
+      info.name = a;
       if (!genList.empty()) {
         info.baseName = genList.at(0);
       }
-      info.extraName = (*i)->GetName();
+      info.extraName = eg->GetName();
       info.supportsPlatform = false;
       info.supportsToolset = false;
       info.isAlias = true;
@@ -962,28 +948,24 @@ createExtraGenerator(
   const std::vector<cmExternalMakefileProjectGeneratorFactory*>& in,
   const std::string& name)
 {
-  for (std::vector<cmExternalMakefileProjectGeneratorFactory*>::const_iterator
-         i = in.begin();
-       i != in.end(); ++i) {
+  for (cmExternalMakefileProjectGeneratorFactory* i : in) {
     const std::vector<std::string> generators =
-      (*i)->GetSupportedGlobalGenerators();
-    if ((*i)->GetName() == name) { // Match aliases
-      return std::make_pair((*i)->CreateExternalMakefileProjectGenerator(),
+      i->GetSupportedGlobalGenerators();
+    if (i->GetName() == name) { // Match aliases
+      return std::make_pair(i->CreateExternalMakefileProjectGenerator(),
                             generators.at(0));
     }
-    for (std::vector<std::string>::const_iterator g = generators.begin();
-         g != generators.end(); ++g) {
+    for (std::string const& g : generators) {
       const std::string fullName =
         cmExternalMakefileProjectGenerator::CreateFullGeneratorName(
-          *g, (*i)->GetName());
+          g, i->GetName());
       if (fullName == name) {
-        return std::make_pair((*i)->CreateExternalMakefileProjectGenerator(),
-                              *g);
+        return std::make_pair(i->CreateExternalMakefileProjectGenerator(), g);
       }
     }
   }
   return std::make_pair(
-    static_cast<cmExternalMakefileProjectGenerator*>(CM_NULLPTR), name);
+    static_cast<cmExternalMakefileProjectGenerator*>(nullptr), name);
 }
 
 cmGlobalGenerator* cmake::CreateGlobalGenerator(const std::string& gname)
@@ -993,10 +975,9 @@ cmGlobalGenerator* cmake::CreateGlobalGenerator(const std::string& gname)
   cmExternalMakefileProjectGenerator* extraGenerator = extra.first;
   const std::string name = extra.second;
 
-  cmGlobalGenerator* generator = CM_NULLPTR;
-  for (RegisteredGeneratorsVector::const_iterator i = this->Generators.begin();
-       i != this->Generators.end(); ++i) {
-    generator = (*i)->CreateGlobalGenerator(name, this);
+  cmGlobalGenerator* generator = nullptr;
+  for (cmGlobalGeneratorFactory* g : this->Generators) {
+    generator = g->CreateGlobalGenerator(name, this);
     if (generator) {
       break;
     }
@@ -1091,10 +1072,10 @@ void cmake::SetGlobalGenerator(cmGlobalGenerator* gg)
 
   // Save the environment variables CXX and CC
   if (!cmSystemTools::GetEnv("CXX", this->CXXEnvironment)) {
-    this->CXXEnvironment = "";
+    this->CXXEnvironment.clear();
   }
   if (!cmSystemTools::GetEnv("CC", this->CCEnvironment)) {
-    this->CCEnvironment = "";
+    this->CCEnvironment.clear();
   }
 }
 
@@ -1192,9 +1173,8 @@ int cmake::HandleDeleteCacheVariables(const std::string& var)
   // load the empty cache
   this->LoadCache();
   // restore the changed compilers
-  for (std::vector<SaveCacheEntry>::iterator i = saved.begin();
-       i != saved.end(); ++i) {
-    this->AddCacheEntry(i->key, i->value.c_str(), i->help.c_str(), i->type);
+  for (SaveCacheEntry const& i : saved) {
+    this->AddCacheEntry(i.key, i.value.c_str(), i.help.c_str(), i.type);
   }
   cmSystemTools::Message(warning.str().c_str());
   // avoid reconfigure if there were errors
@@ -1348,9 +1328,8 @@ int cmake::ActualConfigure()
 
   if (const char* platformName =
         this->State->GetInitializedCacheValue("CMAKE_GENERATOR_PLATFORM")) {
-    if (this->GeneratorPlatform.empty()) {
-      this->GeneratorPlatform = platformName;
-    } else if (this->GeneratorPlatform != platformName) {
+    if (!this->GeneratorPlatform.empty() &&
+        this->GeneratorPlatform != platformName) {
       std::string message = "Error: generator platform: ";
       message += this->GeneratorPlatform;
       message += "\nDoes not match the platform used previously: ";
@@ -1368,9 +1347,7 @@ int cmake::ActualConfigure()
 
   if (const char* tsName =
         this->State->GetInitializedCacheValue("CMAKE_GENERATOR_TOOLSET")) {
-    if (this->GeneratorToolset.empty()) {
-      this->GeneratorToolset = tsName;
-    } else if (this->GeneratorToolset != tsName) {
+    if (!this->GeneratorToolset.empty() && this->GeneratorToolset != tsName) {
       std::string message = "Error: generator toolset: ";
       message += this->GeneratorToolset;
       message += "\nDoes not match the toolset used previously: ";
@@ -1791,35 +1768,30 @@ void cmake::SetIsInTryCompile(bool b)
 
 void cmake::GetGeneratorDocumentation(std::vector<cmDocumentationEntry>& v)
 {
-  for (RegisteredGeneratorsVector::const_iterator i = this->Generators.begin();
-       i != this->Generators.end(); ++i) {
+  for (cmGlobalGeneratorFactory* g : this->Generators) {
     cmDocumentationEntry e;
-    (*i)->GetDocumentation(e);
+    g->GetDocumentation(e);
     v.push_back(e);
   }
-  for (RegisteredExtraGeneratorsVector::const_iterator i =
-         this->ExtraGenerators.begin();
-       i != this->ExtraGenerators.end(); ++i) {
-    const std::string doc = (*i)->GetDocumentation();
-    const std::string name = (*i)->GetName();
+  for (cmExternalMakefileProjectGeneratorFactory* eg : this->ExtraGenerators) {
+    const std::string doc = eg->GetDocumentation();
+    const std::string name = eg->GetName();
 
     // Aliases:
-    for (std::vector<std::string>::const_iterator a = (*i)->Aliases.begin();
-         a != (*i)->Aliases.end(); ++a) {
+    for (std::string const& a : eg->Aliases) {
       cmDocumentationEntry e;
-      e.Name = *a;
+      e.Name = a;
       e.Brief = doc;
       v.push_back(e);
     }
 
     // Full names:
     const std::vector<std::string> generators =
-      (*i)->GetSupportedGlobalGenerators();
-    for (std::vector<std::string>::const_iterator g = generators.begin();
-         g != generators.end(); ++g) {
+      eg->GetSupportedGlobalGenerators();
+    for (std::string const& g : generators) {
       cmDocumentationEntry e;
       e.Name =
-        cmExternalMakefileProjectGenerator::CreateFullGeneratorName(*g, name);
+        cmExternalMakefileProjectGenerator::CreateFullGeneratorName(g, name);
       e.Brief = doc;
       v.push_back(e);
     }
@@ -1899,8 +1871,8 @@ int cmake::CheckBuildSystem()
   cm.SetHomeOutputDirectory("");
   cm.GetCurrentSnapshot().SetDefaultDefinitions();
   cmGlobalGenerator gg(&cm);
-  CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(&gg, cm.GetCurrentSnapshot()));
-  if (!mf->ReadListFile(this->CheckBuildSystemArgument.c_str()) ||
+  cmMakefile mf(&gg, cm.GetCurrentSnapshot());
+  if (!mf.ReadListFile(this->CheckBuildSystemArgument.c_str()) ||
       cmSystemTools::GetErrorOccuredFlag()) {
     if (verbose) {
       std::ostringstream msg;
@@ -1914,34 +1886,33 @@ int cmake::CheckBuildSystem()
 
   if (this->ClearBuildSystem) {
     // Get the generator used for this build system.
-    const char* genName = mf->GetDefinition("CMAKE_DEPENDS_GENERATOR");
+    const char* genName = mf.GetDefinition("CMAKE_DEPENDS_GENERATOR");
     if (!genName || genName[0] == '\0') {
       genName = "Unix Makefiles";
     }
 
     // Create the generator and use it to clear the dependencies.
-    CM_AUTO_PTR<cmGlobalGenerator> ggd(this->CreateGlobalGenerator(genName));
-    if (ggd.get()) {
+    std::unique_ptr<cmGlobalGenerator> ggd(
+      this->CreateGlobalGenerator(genName));
+    if (ggd) {
       cm.GetCurrentSnapshot().SetDefaultDefinitions();
-      CM_AUTO_PTR<cmMakefile> mfd(
-        new cmMakefile(ggd.get(), cm.GetCurrentSnapshot()));
-      CM_AUTO_PTR<cmLocalGenerator> lgd(ggd->CreateLocalGenerator(mfd.get()));
-      lgd->ClearDependencies(mfd.get(), verbose);
+      cmMakefile mfd(ggd.get(), cm.GetCurrentSnapshot());
+      std::unique_ptr<cmLocalGenerator> lgd(ggd->CreateLocalGenerator(&mfd));
+      lgd->ClearDependencies(&mfd, verbose);
     }
   }
 
   // If any byproduct of makefile generation is missing we must re-run.
   std::vector<std::string> products;
-  if (const char* productStr = mf->GetDefinition("CMAKE_MAKEFILE_PRODUCTS")) {
+  if (const char* productStr = mf.GetDefinition("CMAKE_MAKEFILE_PRODUCTS")) {
     cmSystemTools::ExpandListArgument(productStr, products);
   }
-  for (std::vector<std::string>::const_iterator pi = products.begin();
-       pi != products.end(); ++pi) {
-    if (!(cmSystemTools::FileExists(pi->c_str()) ||
-          cmSystemTools::FileIsSymlink(*pi))) {
+  for (std::string const& p : products) {
+    if (!(cmSystemTools::FileExists(p.c_str()) ||
+          cmSystemTools::FileIsSymlink(p))) {
       if (verbose) {
         std::ostringstream msg;
-        msg << "Re-run cmake, missing byproduct: " << *pi << "\n";
+        msg << "Re-run cmake, missing byproduct: " << p << "\n";
         cmSystemTools::Stdout(msg.str().c_str());
       }
       return 1;
@@ -1951,8 +1922,8 @@ int cmake::CheckBuildSystem()
   // Get the set of dependencies and outputs.
   std::vector<std::string> depends;
   std::vector<std::string> outputs;
-  const char* dependsStr = mf->GetDefinition("CMAKE_MAKEFILE_DEPENDS");
-  const char* outputsStr = mf->GetDefinition("CMAKE_MAKEFILE_OUTPUTS");
+  const char* dependsStr = mf.GetDefinition("CMAKE_MAKEFILE_DEPENDS");
+  const char* outputsStr = mf.GetDefinition("CMAKE_MAKEFILE_OUTPUTS");
   if (dependsStr && outputsStr) {
     cmSystemTools::ExpandListArgument(dependsStr, depends);
     cmSystemTools::ExpandListArgument(outputsStr, outputs);
@@ -2065,19 +2036,18 @@ void cmake::MarkCliAsUsed(const std::string& variable)
 void cmake::GenerateGraphViz(const char* fileName) const
 {
 #ifdef CMAKE_BUILD_WITH_CMAKE
-  CM_AUTO_PTR<cmGraphVizWriter> gvWriter(
-    new cmGraphVizWriter(this->GetGlobalGenerator()->GetLocalGenerators()));
+  cmGraphVizWriter gvWriter(this->GetGlobalGenerator()->GetLocalGenerators());
 
   std::string settingsFile = this->GetHomeOutputDirectory();
   settingsFile += "/CMakeGraphVizOptions.cmake";
   std::string fallbackSettingsFile = this->GetHomeDirectory();
   fallbackSettingsFile += "/CMakeGraphVizOptions.cmake";
 
-  gvWriter->ReadSettings(settingsFile.c_str(), fallbackSettingsFile.c_str());
+  gvWriter.ReadSettings(settingsFile.c_str(), fallbackSettingsFile.c_str());
 
-  gvWriter->WritePerTargetFiles(fileName);
-  gvWriter->WriteTargetDependersFiles(fileName);
-  gvWriter->WriteGlobalFile(fileName);
+  gvWriter.WritePerTargetFiles(fileName);
+  gvWriter.WriteTargetDependersFiles(fileName);
+  gvWriter.WriteGlobalFile(fileName);
 
 #endif
 }
@@ -2127,7 +2097,7 @@ cmInstalledFile const* cmake::GetInstalledFile(const std::string& name) const
     cmInstalledFile const& file = i->second;
     return &file;
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 int cmake::GetSystemInformation(std::vector<std::string>& args)
@@ -2383,7 +2353,7 @@ int cmake::Build(const std::string& dir, const std::string& target,
     std::cerr << "Error: could not find CMAKE_GENERATOR in Cache\n";
     return 1;
   }
-  CM_AUTO_PTR<cmGlobalGenerator> gen(
+  std::unique_ptr<cmGlobalGenerator> gen(
     this->CreateGlobalGenerator(cachedGenerator));
   if (!gen.get()) {
     std::cerr << "Error: could create CMAKE_GENERATOR \"" << cachedGenerator
@@ -2479,12 +2449,10 @@ void cmake::RunCheckForUnusedVariables()
   bool haveUnused = false;
   std::ostringstream msg;
   msg << "Manually-specified variables were not used by the project:";
-  for (std::map<std::string, bool>::const_iterator it =
-         this->UsedCliVariables.begin();
-       it != this->UsedCliVariables.end(); ++it) {
-    if (!it->second) {
+  for (auto const& it : this->UsedCliVariables) {
+    if (!it.second) {
       haveUnused = true;
-      msg << "\n  " << it->first;
+      msg << "\n  " << it.first;
     }
   }
   if (haveUnused) {
diff --git a/Source/cmake.h b/Source/cmake.h
index 4ddacf701..b31b6f5ce 100644
--- a/Source/cmake.h
+++ b/Source/cmake.h
@@ -3,7 +3,7 @@
 #ifndef cmake_h
 #define cmake_h
 
-#include "cmConfigure.h"
+#include "cmConfigure.h" // IWYU pragma: keep
 
 #include <map>
 #include <set>
@@ -209,24 +209,12 @@ public:
     this->GeneratorPlatform = ts;
   }
 
-  ///! Get the name of the selected generator-specific platform.
-  std::string const& GetGeneratorPlatform() const
-  {
-    return this->GeneratorPlatform;
-  }
-
   ///! Set the name of the selected generator-specific toolset.
   void SetGeneratorToolset(std::string const& ts)
   {
     this->GeneratorToolset = ts;
   }
 
-  ///! Get the name of the selected generator-specific toolset.
-  std::string const& GetGeneratorToolset() const
-  {
-    return this->GeneratorToolset;
-  }
-
   const std::vector<std::string>& GetSourceExtensions() const
   {
     return this->SourceFileExtensions;
@@ -268,8 +256,7 @@ public:
    *  number provided may be negative in cases where a message is
    *  to be displayed without any progress percentage.
    */
-  void SetProgressCallback(ProgressCallbackType f,
-                           void* clientData = CM_NULLPTR);
+  void SetProgressCallback(ProgressCallbackType f, void* clientData = nullptr);
 
   ///! this is called by generators to update the progress
   void UpdateProgress(const char* msg, float prog);
diff --git a/Source/cmakemain.cxx b/Source/cmakemain.cxx
index da1fe6d64..a1dfc3e89 100644
--- a/Source/cmakemain.cxx
+++ b/Source/cmakemain.cxx
@@ -1,7 +1,7 @@
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
-#include "cmConfigure.h"
 
+#include "cmake.h"
 #include "cmAlgorithms.h"
 #include "cmDocumentationEntry.h"
 #include "cmGlobalGenerator.h"
@@ -9,7 +9,6 @@
 #include "cmState.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
-#include "cmake.h"
 #include "cmcmd.h"
 
 #ifdef CMAKE_BUILD_WITH_CMAKE
@@ -17,6 +16,12 @@
 #include "cmDynamicLoader.h"
 #endif
 
+#ifdef _WIN32
+#include <fcntl.h>  /* _O_TEXT */
+#include <stdlib.h> /* _set_fmode, _fmode */
+#endif
+#include "cm_uv.h"
+
 #include "cmsys/Encoding.hxx"
 #if defined(_WIN32) && defined(CMAKE_BUILD_WITH_CMAKE)
 #include "cmsys/ConsoleBuf.hxx"
@@ -26,33 +31,24 @@
 #include <string>
 #include <vector>
 
-#ifdef CMAKE_USE_LIBUV
-#ifdef _WIN32
-#include <fcntl.h>  /* _O_TEXT */
-#include <stdlib.h> /* _set_fmode, _fmode */
-#endif
-#include "cm_uv.h"
-#endif
-
 #ifdef CMAKE_BUILD_WITH_CMAKE
 static const char* cmDocumentationName[][2] = {
-  { CM_NULLPTR, "  cmake - Cross-Platform Makefile Generator." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  cmake - Cross-Platform Makefile Generator." },
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationUsage[][2] = {
-  { CM_NULLPTR, "  cmake [options] <path-to-source>\n"
-                "  cmake [options] <path-to-existing-build>" },
-  { CM_NULLPTR,
-    "Specify a source directory to (re-)generate a build system for "
-    "it in the current working directory.  Specify an existing build "
-    "directory to re-generate its build system." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  cmake [options] <path-to-source>\n"
+             "  cmake [options] <path-to-existing-build>" },
+  { nullptr, "Specify a source directory to (re-)generate a build system for "
+             "it in the current working directory.  Specify an existing build "
+             "directory to re-generate its build system." },
+  { nullptr, nullptr }
 };
 
 static const char* cmDocumentationUsageNote[][2] = {
-  { CM_NULLPTR, "Run 'cmake --help' for more information." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "Run 'cmake --help' for more information." },
+  { nullptr, nullptr }
 };
 
 #define CMAKE_BUILD_OPTIONS                                                   \
@@ -88,7 +84,7 @@ static const char* cmDocumentationOptions[][2] = {
   { "--no-warn-unused-cli", "Don't warn about command line options." },
   { "--check-system-vars", "Find problems with variable usage in system "
                            "files." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, nullptr }
 };
 
 #endif
@@ -107,14 +103,14 @@ static int do_build(int ac, char const* const* av);
 
 static cmMakefile* cmakemainGetMakefile(void* clientdata)
 {
-  cmake* cm = (cmake*)clientdata;
+  cmake* cm = static_cast<cmake*>(clientdata);
   if (cm && cm->GetDebugOutput()) {
     cmGlobalGenerator* gg = cm->GetGlobalGenerator();
     if (gg) {
       return gg->GetCurrentMakefile();
     }
   }
-  return CM_NULLPTR;
+  return nullptr;
 }
 
 static std::string cmakemainGetStack(void* clientdata)
@@ -172,7 +168,7 @@ int main(int ac, char const* const* av)
   ac = args.argc();
   av = args.argv();
 
-#if defined(CMAKE_USE_LIBUV) && defined(_WIN32)
+#if defined(_WIN32)
   // Perform libuv one-time initialization now, and then un-do its
   // global _fmode setting so that using libuv does not change the
   // default file text/binary mode.  See libuv issue 840.
@@ -198,9 +194,7 @@ int main(int ac, char const* const* av)
 #ifdef CMAKE_BUILD_WITH_CMAKE
   cmDynamicLoader::FlushCache();
 #endif
-#ifdef CMAKE_USE_LIBUV
   uv_loop_close(uv_default_loop());
-#endif
   return ret;
 }
 
@@ -310,30 +304,28 @@ int do_cmake(int ac, char const* const* av)
   cmake cm(role);
   cm.SetHomeDirectory("");
   cm.SetHomeOutputDirectory("");
-  cmSystemTools::SetMessageCallback(cmakemainMessageCallback, (void*)&cm);
-  cm.SetProgressCallback(cmakemainProgressCallback, (void*)&cm);
+  cmSystemTools::SetMessageCallback(cmakemainMessageCallback, &cm);
+  cm.SetProgressCallback(cmakemainProgressCallback, &cm);
   cm.SetWorkingMode(workingMode);
 
   int res = cm.Run(args, view_only);
   if (list_cached || list_all_cached) {
     std::cout << "-- Cache values" << std::endl;
     std::vector<std::string> keys = cm.GetState()->GetCacheEntryKeys();
-    for (std::vector<std::string>::const_iterator it = keys.begin();
-         it != keys.end(); ++it) {
-      cmStateEnums::CacheEntryType t = cm.GetState()->GetCacheEntryType(*it);
+    for (std::string const& k : keys) {
+      cmStateEnums::CacheEntryType t = cm.GetState()->GetCacheEntryType(k);
       if (t != cmStateEnums::INTERNAL && t != cmStateEnums::STATIC &&
           t != cmStateEnums::UNINITIALIZED) {
         const char* advancedProp =
-          cm.GetState()->GetCacheEntryProperty(*it, "ADVANCED");
+          cm.GetState()->GetCacheEntryProperty(k, "ADVANCED");
         if (list_all_cached || !advancedProp) {
           if (list_help) {
             std::cout << "// "
-                      << cm.GetState()->GetCacheEntryProperty(*it,
-                                                              "HELPSTRING")
+                      << cm.GetState()->GetCacheEntryProperty(k, "HELPSTRING")
                       << std::endl;
           }
-          std::cout << *it << ":" << cmState::CacheEntryTypeToString(t) << "="
-                    << cm.GetState()->GetCacheEntryValue(*it) << std::endl;
+          std::cout << k << ":" << cmState::CacheEntryTypeToString(t) << "="
+                    << cm.GetState()->GetCacheEntryValue(k) << std::endl;
           if (list_help) {
             std::cout << std::endl;
           }
@@ -381,7 +373,7 @@ static int do_build(int ac, char const* const* av)
         hasTarget = true;
       } else {
         std::cerr << "'--target' may not be specified more than once.\n\n";
-        dir = "";
+        dir.clear();
         break;
       }
     } else if (strcmp(av[i], "--config") == 0) {
@@ -409,7 +401,7 @@ static int do_build(int ac, char const* const* av)
           break;
         default:
           std::cerr << "Unknown argument " << av[i] << std::endl;
-          dir = "";
+          dir.clear();
           break;
       }
     }
@@ -426,8 +418,8 @@ static int do_build(int ac, char const* const* av)
   }
 
   cmake cm(cmake::RoleInternal);
-  cmSystemTools::SetMessageCallback(cmakemainMessageCallback, (void*)&cm);
-  cm.SetProgressCallback(cmakemainProgressCallback, (void*)&cm);
+  cmSystemTools::SetMessageCallback(cmakemainMessageCallback, &cm);
+  cm.SetProgressCallback(cmakemainProgressCallback, &cm);
   return cm.Build(dir, target, config, nativeOptions, clean);
 #endif
 }
diff --git a/Source/cmakexbuild.cxx b/Source/cmakexbuild.cxx
index 72da456d4..20ead4785 100644
--- a/Source/cmakexbuild.cxx
+++ b/Source/cmakexbuild.cxx
@@ -47,7 +47,7 @@ int RunXCode(std::vector<const char*>& argv, bool& hitbug)
     }
     pipe = cmSystemTools::WaitForLine(cp, line, 100, out, err);
   }
-  cmsysProcess_WaitForExit(cp, 0);
+  cmsysProcess_WaitForExit(cp, nullptr);
   if (cmsysProcess_GetState(cp) == cmsysProcess_State_Exited) {
     return cmsysProcess_GetExitValue(cp);
   }
@@ -64,7 +64,7 @@ int main(int ac, char* av[])
   for (int i = 1; i < ac; i++) {
     argv.push_back(av[i]);
   }
-  argv.push_back(0);
+  argv.push_back(nullptr);
   bool hitbug = true;
   int ret = 0;
   while (hitbug) {
diff --git a/Source/cmcmd.cxx b/Source/cmcmd.cxx
index d5b086174..69339b448 100644
--- a/Source/cmcmd.cxx
+++ b/Source/cmcmd.cxx
@@ -12,16 +12,12 @@
 #include "cmSystemTools.h"
 #include "cmUtils.hxx"
 #include "cmVersion.h"
-#include "cm_auto_ptr.hxx"
 #include "cmake.h"
 
-#if defined(HAVE_SERVER_MODE) && HAVE_SERVER_MODE
-#include "cmServer.h"
-#include "cmServerConnection.h"
-#endif
-
 #if defined(CMAKE_BUILD_WITH_CMAKE)
 #include "cmDependsFortran.h" // For -E cmake_copy_f90_mod callback.
+#include "cmServer.h"
+#include "cmServerConnection.h"
 #endif
 
 #if defined(CMAKE_BUILD_WITH_CMAKE) && defined(_WIN32)
@@ -32,18 +28,21 @@
 #include "cmVisualStudioWCEPlatformParser.h"
 #endif
 
-#include "cmConfigure.h"
 #include "cmsys/Directory.hxx"
 #include "cmsys/FStream.hxx"
 #include "cmsys/Process.h"
 #include "cmsys/Terminal.h"
 #include <algorithm>
 #include <iostream>
+#include <memory> // IWYU pragma: keep
 #include <sstream>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <time.h>
 
+class cmConnection;
+
 int cmcmd_cmake_ninja_depends(std::vector<std::string>::const_iterator argBeg,
                               std::vector<std::string>::const_iterator argEnd);
 int cmcmd_cmake_ninja_dyndep(std::vector<std::string>::const_iterator argBeg,
@@ -88,6 +87,11 @@ void CMakeCommandUsage(const char* program)
     << "  environment               - display the current environment\n"
     << "  make_directory <dir>...   - create parent and <dir> directories\n"
     << "  md5sum <file>...          - create MD5 checksum of files\n"
+    << "  sha1sum <file>...         - create SHA1 checksum of files\n"
+    << "  sha224sum <file>...       - create SHA224 checksum of files\n"
+    << "  sha256sum <file>...       - create SHA256 checksum of files\n"
+    << "  sha384sum <file>...       - create SHA384 checksum of files\n"
+    << "  sha512sum <file>...       - create SHA512 checksum of files\n"
     << "  remove [-f] <file>...     - remove the file(s), use -f to force "
        "it\n"
     << "  remove_directory dir      - remove a directory and its contents\n"
@@ -154,6 +158,291 @@ static bool cmTarFilesFrom(std::string const& file,
   return true;
 }
 
+static int HandleIWYU(const std::string& runCmd,
+                      const std::string& /* sourceFile */,
+                      const std::vector<std::string>& orig_cmd)
+{
+  // Construct the iwyu command line by taking what was given
+  // and adding all the arguments we give to the compiler.
+  std::vector<std::string> iwyu_cmd;
+  cmSystemTools::ExpandListArgument(runCmd, iwyu_cmd, true);
+  iwyu_cmd.insert(iwyu_cmd.end(), orig_cmd.begin() + 1, orig_cmd.end());
+  // Run the iwyu command line.  Capture its stderr and hide its stdout.
+  // Ignore its return code because the tool always returns non-zero.
+  std::string stdErr;
+  int ret;
+  if (!cmSystemTools::RunSingleCommand(iwyu_cmd, nullptr, &stdErr, &ret,
+                                       nullptr, cmSystemTools::OUTPUT_NONE)) {
+    std::cerr << "Error running '" << iwyu_cmd[0] << "': " << stdErr << "\n";
+    return 1;
+  }
+  // Warn if iwyu reported anything.
+  if (stdErr.find("should remove these lines:") != std::string::npos ||
+      stdErr.find("should add these lines:") != std::string::npos) {
+    std::cerr << "Warning: include-what-you-use reported diagnostics:\n"
+              << stdErr << "\n";
+  }
+  // always return 0 we don't want to break the compile
+  return 0;
+}
+
+static int HandleTidy(const std::string& runCmd, const std::string& sourceFile,
+                      const std::vector<std::string>& orig_cmd)
+{
+  // Construct the clang-tidy command line by taking what was given
+  // and adding our compiler command line.  The clang-tidy tool will
+  // automatically skip over the compiler itself and extract the
+  // options.
+  int ret;
+  std::vector<std::string> tidy_cmd;
+  cmSystemTools::ExpandListArgument(runCmd, tidy_cmd, true);
+  tidy_cmd.push_back(sourceFile);
+  tidy_cmd.push_back("--");
+  tidy_cmd.insert(tidy_cmd.end(), orig_cmd.begin(), orig_cmd.end());
+
+  // Run the tidy command line.  Capture its stdout and hide its stderr.
+  std::string stdOut;
+  std::string stdErr;
+  if (!cmSystemTools::RunSingleCommand(tidy_cmd, &stdOut, &stdErr, &ret,
+                                       nullptr, cmSystemTools::OUTPUT_NONE)) {
+    std::cerr << "Error running '" << tidy_cmd[0] << "': " << stdErr << "\n";
+    return 1;
+  }
+  // Output the stdout from clang-tidy to stderr
+  std::cerr << stdOut;
+  // If clang-tidy exited with an error do the same.
+  if (ret != 0) {
+    std::cerr << stdErr;
+  }
+  return ret;
+}
+
+static int HandleLWYU(const std::string& runCmd,
+                      const std::string& /* sourceFile */,
+                      const std::vector<std::string>&)
+{
+  // Construct the ldd -r -u (link what you use lwyu) command line
+  // ldd -u -r lwuy target
+  std::vector<std::string> lwyu_cmd;
+  lwyu_cmd.push_back("ldd");
+  lwyu_cmd.push_back("-u");
+  lwyu_cmd.push_back("-r");
+  lwyu_cmd.push_back(runCmd);
+
+  // Run the ldd -u -r command line.
+  // Capture its stdout and hide its stderr.
+  // Ignore its return code because the tool always returns non-zero
+  // if there are any warnings, but we just want to warn.
+  std::string stdOut;
+  std::string stdErr;
+  int ret;
+  if (!cmSystemTools::RunSingleCommand(lwyu_cmd, &stdOut, &stdErr, &ret,
+                                       nullptr, cmSystemTools::OUTPUT_NONE)) {
+    std::cerr << "Error running '" << lwyu_cmd[0] << "': " << stdErr << "\n";
+    return 1;
+  }
+
+  // Output the stdout from ldd -r -u to stderr
+  // Warn if lwyu reported anything.
+  if (stdOut.find("Unused direct dependencies:") != std::string::npos) {
+    std::cerr << "Warning: " << stdOut;
+  }
+  return 0;
+}
+
+static int HandleCppLint(const std::string& runCmd,
+                         const std::string& sourceFile,
+                         const std::vector<std::string>&)
+{
+  // Construct the cpplint command line.
+  std::vector<std::string> cpplint_cmd;
+  cmSystemTools::ExpandListArgument(runCmd, cpplint_cmd, true);
+  cpplint_cmd.push_back(sourceFile);
+
+  // Run the cpplint command line.  Capture its output.
+  std::string stdOut;
+  int ret;
+  if (!cmSystemTools::RunSingleCommand(cpplint_cmd, &stdOut, &stdOut, &ret,
+                                       nullptr, cmSystemTools::OUTPUT_NONE)) {
+    std::cerr << "Error running '" << cpplint_cmd[0] << "': " << stdOut
+              << "\n";
+    return 1;
+  }
+
+  // Output the output from cpplint to stderr
+  std::cerr << stdOut;
+  return ret;
+}
+
+static int HandleCppCheck(const std::string& runCmd,
+                          const std::string& sourceFile,
+                          const std::vector<std::string>& orig_cmd)
+{
+  // Construct the cpplint command line.
+  std::vector<std::string> cppcheck_cmd;
+  cmSystemTools::ExpandListArgument(runCmd, cppcheck_cmd, true);
+  // extract all the -D, -U, and -I options from the compile line
+  for (auto const& opt : orig_cmd) {
+    if (opt.size() > 2) {
+      if ((opt[0] == '-') &&
+          ((opt[1] == 'D') || (opt[1] == 'I') || (opt[1] == 'U'))) {
+        cppcheck_cmd.push_back(opt);
+// convert cl / options to - options if needed
+#if defined(_WIN32)
+      } else if ((opt[0] == '/') &&
+                 ((opt[1] == 'D') || (opt[1] == 'I') || (opt[1] == 'U'))) {
+        std::string optcopy = opt;
+        optcopy[0] = '-';
+        cppcheck_cmd.push_back(optcopy);
+#endif
+      }
+    }
+  }
+  // add the source file
+  cppcheck_cmd.push_back(sourceFile);
+
+  // Run the cpplint command line.  Capture its output.
+  std::string stdOut;
+  std::string stdErr;
+  int ret;
+  if (!cmSystemTools::RunSingleCommand(cppcheck_cmd, &stdOut, &stdErr, &ret,
+                                       nullptr, cmSystemTools::OUTPUT_NONE)) {
+    std::cerr << "Error running '" << cppcheck_cmd[0] << "': " << stdOut
+              << "\n";
+    return 1;
+  }
+  std::cerr << stdOut;
+  // Output the output from cpplint to stderr
+  if (stdErr.find("(error)") != std::string::npos ||
+      stdErr.find("(warning)") != std::string::npos ||
+      stdErr.find("(style)") != std::string::npos ||
+      stdErr.find("(performance)") != std::string::npos ||
+      stdErr.find("(portability)") != std::string::npos ||
+      stdErr.find("(information)") != std::string::npos) {
+    std::cerr << "Warning: cppcheck reported diagnostics:\n";
+  }
+  std::cerr << stdErr;
+  // ignore errors so build continues
+  return 0;
+}
+
+typedef int (*CoCompileHandler)(const std::string&, const std::string&,
+                                const std::vector<std::string>&);
+
+struct CoCompiler
+{
+  const char* Option;
+  CoCompileHandler Handler;
+  bool NoOriginalCommand;
+};
+
+static CoCompiler CoCompilers[] = { // Table of options and handlers.
+  { "--cppcheck=", HandleCppCheck, false },
+  { "--cpplint=", HandleCppLint, false },
+  { "--iwyu=", HandleIWYU, false },
+  { "--lwyu=", HandleLWYU, true },
+  { "--tidy=", HandleTidy, false }
+};
+
+struct CoCompileJob
+{
+  std::string Command;
+  CoCompileHandler Handler;
+};
+
+// called when args[0] == "__run_co_compile"
+int cmcmd::HandleCoCompileCommands(std::vector<std::string>& args)
+{
+  std::vector<CoCompileJob> jobs;
+  std::string sourceFile; // store --source=
+
+  // Default is to run the original command found after -- if the option
+  // does not need to do that, it should be specified here, currently only
+  // lwyu does that.
+  bool runOriginalCmd = true;
+
+  std::vector<std::string> orig_cmd;
+  bool doing_options = true;
+  for (std::string::size_type i = 2; i < args.size(); ++i) {
+    std::string const& arg = args[i];
+    // if the arg is -- then the rest of the args after
+    // go into orig_cmd
+    if (arg == "--") {
+      doing_options = false;
+    } else if (doing_options) {
+      bool optionFound = false;
+      for (CoCompiler const* cc = cmArrayBegin(CoCompilers);
+           cc != cmArrayEnd(CoCompilers); ++cc) {
+        size_t optionLen = strlen(cc->Option);
+        if (arg.compare(0, optionLen, cc->Option) == 0) {
+          optionFound = true;
+          CoCompileJob job;
+          job.Command = arg.substr(optionLen);
+          job.Handler = cc->Handler;
+          jobs.push_back(std::move(job));
+          if (cc->NoOriginalCommand) {
+            runOriginalCmd = false;
+          }
+        }
+      }
+      if (cmHasLiteralPrefix(arg, "--source=")) {
+        sourceFile = arg.substr(9);
+        optionFound = true;
+      }
+      // if it was not a co-compiler or --source then error
+      if (!optionFound) {
+        std::cerr << "__run_co_compile given unknown argument: " << arg
+                  << "\n";
+        return 1;
+      }
+    } else { // if not doing_options then push to orig_cmd
+      orig_cmd.push_back(arg);
+    }
+  }
+  if (jobs.empty()) {
+    std::cerr << "__run_co_compile missing command to run. "
+                 "Looking for one or more of the following:\n";
+    for (CoCompiler const* cc = cmArrayBegin(CoCompilers);
+         cc != cmArrayEnd(CoCompilers); ++cc) {
+      std::cerr << cc->Option << "\n";
+    }
+    return 1;
+  }
+
+  if (runOriginalCmd && orig_cmd.empty()) {
+    std::cerr << "__run_co_compile missing compile command after --\n";
+    return 1;
+  }
+
+  for (CoCompileJob const& job : jobs) {
+    // call the command handler here
+    int ret = job.Handler(job.Command, sourceFile, orig_cmd);
+
+    // if the command returns non-zero then return and fail.
+    // for commands that do not want to break the build, they should return
+    // 0 no matter what.
+    if (ret != 0) {
+      return ret;
+    }
+  }
+
+  // if there is no original command to run return now
+  if (!runOriginalCmd) {
+    return 0;
+  }
+
+  // Now run the real compiler command and return its result value
+  int ret;
+  if (!cmSystemTools::RunSingleCommand(orig_cmd, nullptr, nullptr, &ret,
+                                       nullptr,
+                                       cmSystemTools::OUTPUT_PASSTHROUGH)) {
+    std::cerr << "Error running '" << orig_cmd[0] << "'\n";
+    return 1;
+  }
+  // return the return value from the original compiler command
+  return ret;
+}
+
 int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
 {
   // IF YOU ADD A NEW COMMAND, DOCUMENT IT ABOVE and in cmakemain.cxx
@@ -277,181 +566,8 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
       return 0;
     }
 #endif
-    // run include what you use command and then run the compile
-    // command. This is an internal undocumented option and should
-    // only be used by CMake itself when running iwyu.
-    if (args[1] == "__run_iwyu") {
-      if (args.size() < 3) {
-        std::cerr << "__run_iwyu Usage: -E __run_iwyu [--iwyu=/path/iwyu]"
-                     " [--cpplint=/path/cpplint] [--tidy=/path/tidy]"
-                     " -- compile command\n";
-        return 1;
-      }
-      bool doing_options = true;
-      std::vector<std::string> orig_cmd;
-      std::string iwyu;
-      std::string tidy;
-      std::string sourceFile;
-      std::string lwyu;
-      std::string cpplint;
-      for (std::string::size_type cc = 2; cc < args.size(); cc++) {
-        std::string const& arg = args[cc];
-        if (arg == "--") {
-          doing_options = false;
-        } else if (doing_options && cmHasLiteralPrefix(arg, "--iwyu=")) {
-          iwyu = arg.substr(7);
-        } else if (doing_options && cmHasLiteralPrefix(arg, "--tidy=")) {
-          tidy = arg.substr(7);
-        } else if (doing_options && cmHasLiteralPrefix(arg, "--source=")) {
-          sourceFile = arg.substr(9);
-        } else if (doing_options && cmHasLiteralPrefix(arg, "--lwyu=")) {
-          lwyu = arg.substr(7);
-        } else if (doing_options && cmHasLiteralPrefix(arg, "--cpplint=")) {
-          cpplint = arg.substr(10);
-        } else if (doing_options) {
-          std::cerr << "__run_iwyu given unknown argument: " << arg << "\n";
-          return 1;
-        } else {
-          orig_cmd.push_back(arg);
-        }
-      }
-      if (tidy.empty() && iwyu.empty() && lwyu.empty() && cpplint.empty()) {
-        std::cerr << "__run_iwyu missing --cpplint=, --iwyu=, --lwyu=, and/or"
-                     " --tidy=\n";
-        return 1;
-      }
-      if ((!cpplint.empty() || !tidy.empty()) && sourceFile.empty()) {
-        std::cerr << "__run_iwyu --cpplint= and/or __run_iwyu --tidy="
-                     " require --source=\n";
-        return 1;
-      }
-      if (orig_cmd.empty() && lwyu.empty()) {
-        std::cerr << "__run_iwyu missing compile command after --\n";
-        return 1;
-      }
-
-      int ret = 0;
-
-      if (!iwyu.empty()) {
-        // Construct the iwyu command line by taking what was given
-        // and adding all the arguments we give to the compiler.
-        std::vector<std::string> iwyu_cmd;
-        cmSystemTools::ExpandListArgument(iwyu, iwyu_cmd, true);
-        iwyu_cmd.insert(iwyu_cmd.end(), orig_cmd.begin() + 1, orig_cmd.end());
-
-        // Run the iwyu command line.  Capture its stderr and hide its stdout.
-        // Ignore its return code because the tool always returns non-zero.
-        std::string stdErr;
-        if (!cmSystemTools::RunSingleCommand(iwyu_cmd, CM_NULLPTR, &stdErr,
-                                             &ret, CM_NULLPTR,
-                                             cmSystemTools::OUTPUT_NONE)) {
-          std::cerr << "Error running '" << iwyu_cmd[0] << "': " << stdErr
-                    << "\n";
-          return 1;
-        }
-
-        // Warn if iwyu reported anything.
-        if (stdErr.find("should remove these lines:") != std::string::npos ||
-            stdErr.find("should add these lines:") != std::string::npos) {
-          std::cerr << "Warning: include-what-you-use reported diagnostics:\n"
-                    << stdErr << "\n";
-        }
-      }
-
-      if (!tidy.empty()) {
-        // Construct the clang-tidy command line by taking what was given
-        // and adding our compiler command line.  The clang-tidy tool will
-        // automatically skip over the compiler itself and extract the
-        // options.
-        std::vector<std::string> tidy_cmd;
-        cmSystemTools::ExpandListArgument(tidy, tidy_cmd, true);
-        tidy_cmd.push_back(sourceFile);
-        tidy_cmd.push_back("--");
-        tidy_cmd.insert(tidy_cmd.end(), orig_cmd.begin(), orig_cmd.end());
-
-        // Run the tidy command line.  Capture its stdout and hide its stderr.
-        std::string stdOut;
-        std::string stdErr;
-        if (!cmSystemTools::RunSingleCommand(tidy_cmd, &stdOut, &stdErr, &ret,
-                                             CM_NULLPTR,
-                                             cmSystemTools::OUTPUT_NONE)) {
-          std::cerr << "Error running '" << tidy_cmd[0] << "': " << stdErr
-                    << "\n";
-          return 1;
-        }
-        // Output the stdout from clang-tidy to stderr
-        std::cerr << stdOut;
-        // If clang-tidy exited with an error do the same.
-        if (ret != 0) {
-          std::cerr << stdErr;
-          return ret;
-        }
-      }
-      if (!lwyu.empty()) {
-        // Construct the ldd -r -u (link what you use lwyu) command line
-        // ldd -u -r lwuy target
-        std::vector<std::string> lwyu_cmd;
-        lwyu_cmd.push_back("ldd");
-        lwyu_cmd.push_back("-u");
-        lwyu_cmd.push_back("-r");
-        lwyu_cmd.push_back(lwyu);
-
-        // Run the ldd -u -r command line.
-        // Capture its stdout and hide its stderr.
-        // Ignore its return code because the tool always returns non-zero
-        // if there are any warnings, but we just want to warn.
-        std::string stdOut;
-        std::string stdErr;
-        if (!cmSystemTools::RunSingleCommand(lwyu_cmd, &stdOut, &stdErr, &ret,
-                                             CM_NULLPTR,
-                                             cmSystemTools::OUTPUT_NONE)) {
-          std::cerr << "Error running '" << lwyu_cmd[0] << "': " << stdErr
-                    << "\n";
-          return 1;
-        }
-
-        // Output the stdout from ldd -r -u to stderr
-        // Warn if lwyu reported anything.
-        if (stdOut.find("Unused direct dependencies:") != std::string::npos) {
-          std::cerr << "Warning: " << stdOut;
-        }
-      }
-
-      if (!cpplint.empty()) {
-        // Construct the cpplint command line.
-        std::vector<std::string> cpplint_cmd;
-        cmSystemTools::ExpandListArgument(cpplint, cpplint_cmd, true);
-        cpplint_cmd.push_back(sourceFile);
-
-        // Run the cpplint command line.  Capture its output.
-        std::string stdOut;
-        if (!cmSystemTools::RunSingleCommand(cpplint_cmd, &stdOut, &stdOut,
-                                             &ret, CM_NULLPTR,
-                                             cmSystemTools::OUTPUT_NONE)) {
-          std::cerr << "Error running '" << cpplint_cmd[0] << "': " << stdOut
-                    << "\n";
-          return 1;
-        }
-
-        // Output the output from cpplint to stderr
-        std::cerr << stdOut;
-
-        // If cpplint exited with an error do the same.
-        if (ret != 0) {
-          return ret;
-        }
-      }
-
-      ret = 0;
-      // Now run the real compiler command and return its result value.
-      if (lwyu.empty() &&
-          !cmSystemTools::RunSingleCommand(
-            orig_cmd, CM_NULLPTR, CM_NULLPTR, &ret, CM_NULLPTR,
-            cmSystemTools::OUTPUT_PASSTHROUGH)) {
-        std::cerr << "Error running '" << orig_cmd[0] << "'\n";
-        return 1;
-      }
-      return ret;
+    if (args[1] == "__run_co_compile") {
+      return cmcmd::HandleCoCompileCommands(args);
     }
 
     // Echo string
@@ -497,8 +613,8 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
       // Execute command from remaining arguments.
       std::vector<std::string> cmd(ai, ae);
       int retval;
-      if (cmSystemTools::RunSingleCommand(cmd, CM_NULLPTR, CM_NULLPTR, &retval,
-                                          CM_NULLPTR,
+      if (cmSystemTools::RunSingleCommand(cmd, nullptr, nullptr, &retval,
+                                          nullptr,
                                           cmSystemTools::OUTPUT_PASSTHROUGH)) {
         return retval;
       }
@@ -584,7 +700,7 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
         return 1;
       }
       cmake cm(cmake::RoleInternal);
-#if defined(HAVE_SERVER_MODE) && HAVE_SERVER_MODE
+#if defined(CMAKE_BUILD_WITH_CMAKE)
       std::cout << cm.ReportCapabilities(true);
 #else
       std::cout << cm.ReportCapabilities(false);
@@ -623,7 +739,7 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
       time(&time_start);
       clock_start = clock();
       int ret = 0;
-      cmSystemTools::RunSingleCommand(command, CM_NULLPTR, CM_NULLPTR, &ret);
+      cmSystemTools::RunSingleCommand(command, nullptr, nullptr, &ret);
 
       clock_finish = clock();
       time(&time_finish);
@@ -641,24 +757,28 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
 
     // Command to calculate the md5sum of a file
     if (args[1] == "md5sum" && args.size() >= 3) {
-      char md5out[32];
-      int retval = 0;
-      for (std::string::size_type cc = 2; cc < args.size(); cc++) {
-        const char* filename = args[cc].c_str();
-        // Cannot compute md5sum of a directory
-        if (cmSystemTools::FileIsDirectory(filename)) {
-          std::cerr << "Error: " << filename << " is a directory" << std::endl;
-          retval++;
-        } else if (!cmSystemTools::ComputeFileMD5(filename, md5out)) {
-          // To mimic md5sum behavior in a shell:
-          std::cerr << filename << ": No such file or directory" << std::endl;
-          retval++;
-        } else {
-          std::cout << std::string(md5out, 32) << "  " << filename
-                    << std::endl;
-        }
-      }
-      return retval;
+      return HashSumFile(args, cmCryptoHash::AlgoMD5);
+    }
+
+    // Command to calculate the sha1sum of a file
+    if (args[1] == "sha1sum" && args.size() >= 3) {
+      return HashSumFile(args, cmCryptoHash::AlgoSHA1);
+    }
+
+    if (args[1] == "sha224sum" && args.size() >= 3) {
+      return HashSumFile(args, cmCryptoHash::AlgoSHA224);
+    }
+
+    if (args[1] == "sha256sum" && args.size() >= 3) {
+      return HashSumFile(args, cmCryptoHash::AlgoSHA256);
+    }
+
+    if (args[1] == "sha384sum" && args.size() >= 3) {
+      return HashSumFile(args, cmCryptoHash::AlgoSHA384);
+    }
+
+    if (args[1] == "sha512sum" && args.size() >= 3) {
+      return HashSumFile(args, cmCryptoHash::AlgoSHA512);
     }
 
     // Command to change directory and run a program.
@@ -675,8 +795,8 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
       int retval = 0;
       int timeout = 0;
       if (cmSystemTools::RunSingleCommand(
-            command.c_str(), CM_NULLPTR, CM_NULLPTR, &retval,
-            directory.c_str(), cmSystemTools::OUTPUT_PASSTHROUGH, timeout)) {
+            command.c_str(), nullptr, nullptr, &retval, directory.c_str(),
+            cmSystemTools::OUTPUT_PASSTHROUGH, timeout)) {
         return retval;
       }
 
@@ -820,8 +940,8 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
         cmStateSnapshot snapshot = cm.GetCurrentSnapshot();
         snapshot.GetDirectory().SetCurrentBinary(startOutDir);
         snapshot.GetDirectory().SetCurrentSource(startDir);
-        CM_AUTO_PTR<cmMakefile> mf(new cmMakefile(ggd, snapshot));
-        CM_AUTO_PTR<cmLocalGenerator> lgd(ggd->CreateLocalGenerator(mf.get()));
+        cmMakefile mf(ggd, snapshot);
+        std::unique_ptr<cmLocalGenerator> lgd(ggd->CreateLocalGenerator(&mf));
 
         // Actually scan dependencies.
         return lgd->UpdateDependencies(depInfo.c_str(), verbose, color) ? 0
@@ -1012,8 +1132,8 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
           return 1;
         }
       }
-#if defined(HAVE_SERVER_MODE) && HAVE_SERVER_MODE
-      cmServerConnection* conn;
+#if defined(CMAKE_BUILD_WITH_CMAKE)
+      cmConnection* conn;
       if (isDebug) {
         conn = new cmServerStdIoConnection;
       } else {
@@ -1074,6 +1194,33 @@ int cmcmd::ExecuteCMakeCommand(std::vector<std::string>& args)
   return 1;
 }
 
+int cmcmd::HashSumFile(std::vector<std::string>& args, cmCryptoHash::Algo algo)
+{
+  if (args.size() < 3) {
+    return -1;
+  }
+  int retval = 0;
+
+  for (std::string::size_type cc = 2; cc < args.size(); cc++) {
+    const char* filename = args[cc].c_str();
+    // Cannot compute sum of a directory
+    if (cmSystemTools::FileIsDirectory(filename)) {
+      std::cerr << "Error: " << filename << " is a directory" << std::endl;
+      retval++;
+    } else {
+      std::string value = cmSystemTools::ComputeFileHash(filename, algo);
+      if (value.empty()) {
+        // To mimic "md5sum/shasum" behavior in a shell:
+        std::cerr << filename << ": No such file or directory" << std::endl;
+        retval++;
+      } else {
+        std::cout << value << "  " << filename << std::endl;
+      }
+    }
+  }
+  return retval;
+}
+
 int cmcmd::SymlinkLibrary(std::vector<std::string>& args)
 {
   int result = 0;
@@ -1277,7 +1424,7 @@ int cmcmd::ExecuteLinkScript(std::vector<std::string>& args)
     }
 
     // Setup this command line.
-    const char* cmd[2] = { command.c_str(), CM_NULLPTR };
+    const char* cmd[2] = { command.c_str(), nullptr };
     cmsysProcess_SetCommand(cp, cmd);
 
     // Report the command if verbose output is enabled.
@@ -1287,7 +1434,7 @@ int cmcmd::ExecuteLinkScript(std::vector<std::string>& args)
 
     // Run the command and wait for it to exit.
     cmsysProcess_Execute(cp);
-    cmsysProcess_WaitForExit(cp, CM_NULLPTR);
+    cmsysProcess_WaitForExit(cp, nullptr);
 
     // Report failure if any.
     switch (cmsysProcess_GetState(cp)) {
@@ -1375,24 +1522,23 @@ private:
 // For visual studio 2005 and newer manifest files need to be embedded into
 // exe and dll's.  This code does that in such a way that incremental linking
 // still works.
-int cmcmd::VisualStudioLink(std::vector<std::string>& args, int type)
+int cmcmd::VisualStudioLink(std::vector<std::string> const& args, int type)
 {
   if (args.size() < 2) {
     return -1;
   }
   const bool verbose = cmSystemTools::HasEnv("VERBOSE");
   std::vector<std::string> expandedArgs;
-  for (std::vector<std::string>::iterator i = args.begin(); i != args.end();
-       ++i) {
+  for (std::string const& i : args) {
     // check for nmake temporary files
-    if ((*i)[0] == '@' && i->find("@CMakeFiles") != 0) {
-      cmsys::ifstream fin(i->substr(1).c_str());
+    if (i[0] == '@' && i.find("@CMakeFiles") != 0) {
+      cmsys::ifstream fin(i.substr(1).c_str());
       std::string line;
       while (cmSystemTools::GetLineFromStream(fin, line)) {
         cmSystemTools::ParseWindowsCommandLine(line.c_str(), expandedArgs);
       }
     } else {
-      expandedArgs.push_back(*i);
+      expandedArgs.push_back(i);
     }
   }
 
@@ -1403,8 +1549,38 @@ int cmcmd::VisualStudioLink(std::vector<std::string>& args, int type)
   return vsLink.Link();
 }
 
+enum NumberFormat
+{
+  FORMAT_DECIMAL,
+  FORMAT_HEX
+};
+struct NumberFormatter
+{
+  NumberFormat Format;
+  int Value;
+  NumberFormatter(NumberFormat format, int value)
+    : Format(format)
+    , Value(value)
+  {
+  }
+};
+std::ostream& operator<<(std::ostream& stream,
+                         NumberFormatter const& formatter)
+{
+  auto const& flags = stream.flags();
+  if (formatter.Format == FORMAT_DECIMAL) {
+    stream << std::dec << formatter.Value;
+  } else {
+    stream << "0x" << std::hex << formatter.Value;
+  }
+  stream.flags(flags);
+  return stream;
+}
+
 static bool RunCommand(const char* comment, std::vector<std::string>& command,
-                       bool verbose, int* retCodeOut = CM_NULLPTR)
+                       bool verbose, NumberFormat exitFormat,
+                       int* retCodeOut = nullptr,
+                       bool (*retCodeOkay)(int) = nullptr)
 {
   if (verbose) {
     std::cout << comment << ":\n";
@@ -1412,32 +1588,32 @@ static bool RunCommand(const char* comment, std::vector<std::string>& command,
   }
   std::string output;
   int retCode = 0;
-  // use rc command to create .res file
-  bool res =
-    cmSystemTools::RunSingleCommand(command, &output, &output, &retCode,
-                                    CM_NULLPTR, cmSystemTools::OUTPUT_NONE);
-  // always print the output of the command, unless
-  // it is the dumb rc command banner, but if the command
-  // returned an error code then print the output anyway as
-  // the banner may be mixed with some other important information.
-  if (output.find("Resource Compiler Version") == std::string::npos || !res ||
-      retCode) {
-    std::cout << output;
-  }
-  if (!res) {
-    std::cout << comment << " failed to run." << std::endl;
-    return false;
-  }
-  // if retCodeOut is requested then always return true
-  // and set the retCodeOut to retCode
+  bool commandResult = cmSystemTools::RunSingleCommand(
+    command, &output, &output, &retCode, nullptr, cmSystemTools::OUTPUT_NONE);
+  bool const retCodeSuccess =
+    retCode == 0 || (retCodeOkay && retCodeOkay(retCode));
+  bool const success = commandResult && retCodeSuccess;
   if (retCodeOut) {
-    *retCodeOut = retCode;
-    return true;
+    if (commandResult || !retCodeSuccess) {
+      *retCodeOut = retCode;
+    } else {
+      *retCodeOut = -1;
+    }
   }
-  if (retCode != 0) {
-    std::cout << comment << " failed. with " << retCode << "\n";
+  if (!success) {
+    std::cout << comment << ": command \"" << cmJoin(command, " ")
+              << "\" failed (exit code "
+              << NumberFormatter(exitFormat, retCode)
+              << ") with the following output:\n"
+              << output;
+  } else {
+    // always print the output of the command, unless
+    // it is the dumb rc command banner
+    if (output.find("Resource Compiler Version") == std::string::npos) {
+      std::cout << output;
+    }
   }
-  return retCode == 0;
+  return success;
 }
 
 bool cmVSLink::Parse(std::vector<std::string>::const_iterator argBeg,
@@ -1535,6 +1711,13 @@ int cmVSLink::Link()
   return LinkNonIncremental();
 }
 
+static bool mtRetIsUpdate(int mtRet)
+{
+  // 'mt /notify_update' returns a special value (differing between
+  // Windows and POSIX hosts) when it updated the manifest file.
+  return mtRet == 0x41020001 || mtRet == 0xbb;
+}
+
 int cmVSLink::LinkIncremental()
 {
   // This follows the steps listed here:
@@ -1587,10 +1770,10 @@ int cmVSLink::LinkIncremental()
 
   // Compile the resource file.
   std::vector<std::string> rcCommand;
-  rcCommand.push_back(cmSystemTools::FindProgram("rc.exe"));
+  rcCommand.push_back("rc");
   rcCommand.push_back("/fo" + this->ManifestFileRes);
   rcCommand.push_back(this->ManifestFileRC);
-  if (!RunCommand("RC Pass 1", rcCommand, this->Verbose)) {
+  if (!RunCommand("RC Pass 1", rcCommand, this->Verbose, FORMAT_DECIMAL)) {
     return -1;
   }
 
@@ -1598,26 +1781,28 @@ int cmVSLink::LinkIncremental()
   this->LinkCommand.push_back(this->ManifestFileRes);
 
   // Run the link command (possibly generates intermediate manifest).
-  if (!RunCommand("LINK Pass 1", this->LinkCommand, this->Verbose)) {
+  if (!RunCommand("LINK Pass 1", this->LinkCommand, this->Verbose,
+                  FORMAT_DECIMAL)) {
     return -1;
   }
 
   // Run the manifest tool to create the final manifest.
   int mtRet = this->RunMT("/out:" + this->ManifestFile, true);
 
-  // If mt returns 1090650113 (or 187 on a posix host) then it updated the
-  // manifest file so we need to embed it again.  Otherwise we are done.
-  if (mtRet != 1090650113 && mtRet != 187) {
+  // If mt returns a special value then it updated the manifest file so
+  // we need to embed it again.  Otherwise we are done.
+  if (!mtRetIsUpdate(mtRet)) {
     return mtRet;
   }
 
   // Compile the resource file again.
-  if (!RunCommand("RC Pass 2", rcCommand, this->Verbose)) {
+  if (!RunCommand("RC Pass 2", rcCommand, this->Verbose, FORMAT_DECIMAL)) {
     return -1;
   }
 
   // Link incrementally again to use the updated resource.
-  if (!RunCommand("FINAL LINK", this->LinkCommand, this->Verbose)) {
+  if (!RunCommand("FINAL LINK", this->LinkCommand, this->Verbose,
+                  FORMAT_DECIMAL)) {
     return -1;
   }
   return 0;
@@ -1626,7 +1811,7 @@ int cmVSLink::LinkIncremental()
 int cmVSLink::LinkNonIncremental()
 {
   // Run the link command (possibly generates intermediate manifest).
-  if (!RunCommand("LINK", this->LinkCommand, this->Verbose)) {
+  if (!RunCommand("LINK", this->LinkCommand, this->Verbose, FORMAT_DECIMAL)) {
     return -1;
   }
 
@@ -1644,7 +1829,7 @@ int cmVSLink::LinkNonIncremental()
 int cmVSLink::RunMT(std::string const& out, bool notify)
 {
   std::vector<std::string> mtCommand;
-  mtCommand.push_back(cmSystemTools::FindProgram("mt.exe"));
+  mtCommand.push_back("mt");
   mtCommand.push_back("/nologo");
   mtCommand.push_back("/manifest");
   if (this->LinkGeneratesManifest) {
@@ -1659,7 +1844,8 @@ int cmVSLink::RunMT(std::string const& out, bool notify)
     mtCommand.push_back("/notify_update");
   }
   int mtRet = 0;
-  if (!RunCommand("MT", mtCommand, this->Verbose, &mtRet)) {
+  if (!RunCommand("MT", mtCommand, this->Verbose, FORMAT_HEX, &mtRet,
+                  mtRetIsUpdate)) {
     return -1;
   }
   return mtRet;
diff --git a/Source/cmcmd.h b/Source/cmcmd.h
index 929f1ae47..d1e03d01f 100644
--- a/Source/cmcmd.h
+++ b/Source/cmcmd.h
@@ -4,6 +4,7 @@
 #define cmcmd_h
 
 #include "cmConfigure.h" // IWYU pragma: keep
+#include "cmCryptoHash.h"
 
 #include <string>
 #include <vector>
@@ -18,6 +19,9 @@ public:
   static int ExecuteCMakeCommand(std::vector<std::string>&);
 
 protected:
+  static int HandleCoCompileCommands(std::vector<std::string>& args);
+  static int HashSumFile(std::vector<std::string>& args,
+                         cmCryptoHash::Algo algo);
   static int SymlinkLibrary(std::vector<std::string>& args);
   static int SymlinkExecutable(std::vector<std::string>& args);
   static bool SymlinkInternal(std::string const& file,
@@ -26,7 +30,7 @@ protected:
   static int ExecuteLinkScript(std::vector<std::string>& args);
   static int WindowsCEEnvironment(const char* version,
                                   const std::string& name);
-  static int VisualStudioLink(std::vector<std::string>& args, int type);
+  static int VisualStudioLink(std::vector<std::string> const& args, int type);
 };
 
 #endif
diff --git a/Source/ctest.cxx b/Source/ctest.cxx
index 84e815d1d..f6466fad7 100644
--- a/Source/ctest.cxx
+++ b/Source/ctest.cxx
@@ -1,6 +1,5 @@
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
-#include "cmConfigure.h"
 
 #include "CTest/cmCTestLaunch.h"
 #include "CTest/cmCTestScriptHandler.h"
@@ -18,13 +17,13 @@
 #include <vector>
 
 static const char* cmDocumentationName[][2] = {
-  { CM_NULLPTR, "  ctest - Testing driver provided by CMake." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, "  ctest - Testing driver provided by CMake." },
+  { nullptr, nullptr }
 };
 
-static const char* cmDocumentationUsage[][2] = { { CM_NULLPTR,
+static const char* cmDocumentationUsage[][2] = { { nullptr,
                                                    "  ctest [options]" },
-                                                 { CM_NULLPTR, CM_NULLPTR } };
+                                                 { nullptr, nullptr } };
 
 static const char* cmDocumentationOptions[][2] = {
   { "-C <cfg>, --build-config <cfg>", "Choose configuration to test." },
@@ -83,6 +82,8 @@ static const char* cmDocumentationOptions[][2] = {
   { "--max-width <width>", "Set the max width for a test name to output" },
   { "--interactive-debug-mode [0|1]", "Set the interactive mode to 0 or 1." },
   { "--no-label-summary", "Disable timing summary information for labels." },
+  { "--no-subproject-summary", "Disable timing summary information for "
+                               "subprojects." },
   { "--build-and-test", "Configure, build and run a test." },
   { "--build-target", "Specify a specific target to build." },
   { "--build-nocmake", "Run the build without running cmake first." },
@@ -118,7 +119,7 @@ static const char* cmDocumentationOptions[][2] = {
   { "--http1.0", "Submit using HTTP 1.0." },
   { "--no-compress-output", "Do not compress test output when submitting." },
   { "--print-labels", "Print all available test labels." },
-  { CM_NULLPTR, CM_NULLPTR }
+  { nullptr, nullptr }
 };
 
 // this is a test driver program for cmCTest.
@@ -185,6 +186,7 @@ int main(int argc, char const* const* argv)
 
   // copy the args to a vector
   std::vector<std::string> args;
+  args.reserve(argc);
   for (int i = 0; i < argc; ++i) {
     args.push_back(argv[i]);
   }
diff --git a/Source/kwsys/.gitattributes b/Source/kwsys/.gitattributes
deleted file mode 100644
index 7065eb5cb..000000000
--- a/Source/kwsys/.gitattributes
+++ /dev/null
@@ -1,13 +0,0 @@
-.git*            export-ignore
-
-*.c              kwsys-c-style
-*.c.in           kwsys-c-style
-*.cxx            kwsys-c-style
-*.h              kwsys-c-style
-*.h.in           kwsys-c-style
-*.hxx            kwsys-c-style
-*.hxx.in         kwsys-c-style
-
-*.cmake          whitespace=tab-in-indent
-*.rst            whitespace=tab-in-indent conflict-marker-size=79
-*.txt            whitespace=tab-in-indent
diff --git a/Source/kwsys/CMakeLists.txt b/Source/kwsys/CMakeLists.txt
index e915b1a80..21568bbed 100644
--- a/Source/kwsys/CMakeLists.txt
+++ b/Source/kwsys/CMakeLists.txt
@@ -20,6 +20,21 @@
 #  KWSYS_HEADER_ROOT = The directory into which to generate the kwsys headers.
 #                      A directory called "${KWSYS_NAMESPACE}" will be
 #                      created under this root directory to hold the files.
+#  KWSYS_SPLIT_OBJECTS_FROM_INTERFACE
+#                    = Instead of creating a single ${KWSYS_NAMESPACE} library
+#                      target, create three separate targets:
+#                        ${KWSYS_NAMESPACE}
+#                          - An INTERFACE library only containing usage
+#                            requirements.
+#                        ${KWSYS_NAMESPACE}_objects
+#                          - An OBJECT library for the built kwsys objects.
+#                            Note: This is omitted from the install rules
+#                        ${KWSYS_NAMESPACE}_private
+#                          - An INTERFACE library combining both that is
+#                            appropriate for use with PRIVATE linking in
+#                            target_link_libraries. Because of how interface
+#                            properties propagate, this target is not suitable
+#                            for use with PUBLIC or INTERFACE linking.
 #
 #    Example:
 #
@@ -79,6 +94,10 @@ FOREACH(p
 ENDFOREACH()
 SET(CMAKE_LEGACY_CYGWIN_WIN32 0)
 
+IF(CMAKE_VERSION VERSION_LESS 3.0)
+  SET(KWSYS_SPLIT_OBJECTS_FROM_INTERFACE 0)
+ENDIF()
+
 #-----------------------------------------------------------------------------
 # If a namespace is not specified, use "kwsys" and enable testing.
 # This should be the case only when kwsys is not included inside
@@ -430,6 +449,11 @@ SET_SOURCE_FILES_PROPERTIES(ProcessUNIX.c System.c PROPERTIES
   COMPILE_FLAGS "-DKWSYS_C_HAS_PTRDIFF_T=${KWSYS_C_HAS_PTRDIFF_T} -DKWSYS_C_HAS_SSIZE_T=${KWSYS_C_HAS_SSIZE_T}"
   )
 
+IF(DEFINED KWSYS_PROCESS_USE_SELECT)
+  GET_PROPERTY(ProcessUNIX_FLAGS SOURCE ProcessUNIX.c PROPERTY COMPILE_FLAGS)
+  SET_PROPERTY(SOURCE ProcessUNIX.c PROPERTY COMPILE_FLAGS "${ProcessUNIX_FLAGS} -DKWSYSPE_USE_SELECT=${KWSYSPE_USE_SELECT}")
+ENDIF()
+
 IF(KWSYS_USE_DynamicLoader)
   GET_PROPERTY(KWSYS_SUPPORTS_SHARED_LIBS GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS)
   IF(KWSYS_SUPPORTS_SHARED_LIBS)
@@ -795,68 +819,144 @@ ENDFOREACH()
 #-----------------------------------------------------------------------------
 # Add the library with the configured name and list of sources.
 IF(KWSYS_C_SRCS OR KWSYS_CXX_SRCS)
-  ADD_LIBRARY(${KWSYS_NAMESPACE} ${KWSYS_LIBRARY_TYPE}
-    ${KWSYS_C_SRCS} ${KWSYS_CXX_SRCS})
-  SET_PROPERTY(TARGET ${KWSYS_NAMESPACE} PROPERTY C_CLANG_TIDY "")
-  SET_PROPERTY(TARGET ${KWSYS_NAMESPACE} PROPERTY CXX_CLANG_TIDY "")
-  SET_PROPERTY(TARGET ${KWSYS_NAMESPACE} PROPERTY C_INCLUDE_WHAT_YOU_USE "")
-  SET_PROPERTY(TARGET ${KWSYS_NAMESPACE} PROPERTY CXX_INCLUDE_WHAT_YOU_USE "")
-  SET_PROPERTY(TARGET ${KWSYS_NAMESPACE} PROPERTY LABELS ${KWSYS_LABELS_LIB})
+  IF(KWSYS_SPLIT_OBJECTS_FROM_INTERFACE)
+    SET(KWSYS_TARGET_INTERFACE ${KWSYS_NAMESPACE})
+    SET(KWSYS_TARGET_OBJECT ${KWSYS_NAMESPACE}_objects)
+    SET(KWSYS_TARGET_LINK ${KWSYS_NAMESPACE}_private)
+    SET(KWSYS_TARGET_INSTALL ${KWSYS_TARGET_INTERFACE} ${KWSYS_TARGET_LINK})
+    SET(KWSYS_LINK_DEPENDENCY INTERFACE)
+    ADD_LIBRARY(${KWSYS_TARGET_OBJECT} OBJECT
+      ${KWSYS_C_SRCS} ${KWSYS_CXX_SRCS})
+    IF(KWSYS_BUILD_SHARED)
+      SET_PROPERTY(TARGET ${KWSYS_TARGET_OBJECT} PROPERTY
+        POSITION_INDEPENDENT_CODE TRUE)
+    ENDIF()
+    ADD_LIBRARY(${KWSYS_TARGET_INTERFACE} INTERFACE)
+    ADD_LIBRARY(${KWSYS_TARGET_LINK} INTERFACE)
+    TARGET_LINK_LIBRARIES(${KWSYS_TARGET_LINK} INTERFACE
+      ${KWSYS_TARGET_INTERFACE})
+    TARGET_SOURCES(${KWSYS_TARGET_LINK} INTERFACE
+      $<TARGET_OBJECTS:${KWSYS_TARGET_OBJECT}>)
+  ELSE()
+    SET(KWSYS_TARGET_INTERFACE ${KWSYS_NAMESPACE})
+    SET(KWSYS_TARGET_OBJECT ${KWSYS_NAMESPACE})
+    SET(KWSYS_TARGET_LINK ${KWSYS_NAMESPACE})
+    set(KWSYS_TARGET_INSTALL ${KWSYS_TARGET_LINK})
+    SET(KWSYS_LINK_DEPENDENCY PUBLIC)
+    ADD_LIBRARY(${KWSYS_TARGET_INTERFACE} ${KWSYS_LIBRARY_TYPE}
+      ${KWSYS_C_SRCS} ${KWSYS_CXX_SRCS})
+  ENDIF()
+  SET_TARGET_PROPERTIES(${KWSYS_TARGET_OBJECT} PROPERTIES
+    C_CLANG_TIDY ""
+    CXX_CLANG_TIDY ""
+    C_INCLUDE_WHAT_YOU_USE ""
+    CXX_INCLUDE_WHAT_YOU_USE ""
+    LABELS "${KWSYS_LABELS_LIB}")
   IF(KWSYS_USE_DynamicLoader)
     IF(UNIX)
-      TARGET_LINK_LIBRARIES(${KWSYS_NAMESPACE} ${CMAKE_DL_LIBS})
+      TARGET_LINK_LIBRARIES(${KWSYS_TARGET_INTERFACE} ${KWSYS_LINK_DEPENDENCY}
+        ${CMAKE_DL_LIBS})
     ENDIF()
   ENDIF()
 
   IF(KWSYS_USE_SystemInformation)
     IF(WIN32)
-      TARGET_LINK_LIBRARIES(${KWSYS_NAMESPACE} ws2_32)
+      TARGET_LINK_LIBRARIES(${KWSYS_TARGET_INTERFACE} ${KWSYS_LINK_DEPENDENCY} ws2_32)
       IF(KWSYS_SYS_HAS_PSAPI)
-        TARGET_LINK_LIBRARIES(${KWSYS_NAMESPACE} Psapi)
+        TARGET_LINK_LIBRARIES(${KWSYS_TARGET_INTERFACE} ${KWSYS_LINK_DEPENDENCY}
+          Psapi)
       ENDIF()
     ELSEIF(UNIX)
       IF (EXECINFO_LIB AND KWSYS_CXX_HAS_BACKTRACE)
         # backtrace on FreeBSD is not in libc
-        TARGET_LINK_LIBRARIES(${KWSYS_NAMESPACE} ${EXECINFO_LIB})
+        TARGET_LINK_LIBRARIES(${KWSYS_TARGET_INTERFACE} ${KWSYS_LINK_DEPENDENCY}
+          ${EXECINFO_LIB})
       ENDIF()
       IF (KWSYS_CXX_HAS_DLADDR)
         # for symbol lookup using dladdr
-        TARGET_LINK_LIBRARIES(${KWSYS_NAMESPACE} ${CMAKE_DL_LIBS})
+        TARGET_LINK_LIBRARIES(${KWSYS_TARGET_INTERFACE} ${KWSYS_LINK_DEPENDENCY}
+          ${CMAKE_DL_LIBS})
       ENDIF()
       IF (CMAKE_SYSTEM_NAME STREQUAL "SunOS")
-        TARGET_LINK_LIBRARIES(${KWSYS_NAMESPACE} socket)
+        TARGET_LINK_LIBRARIES(${KWSYS_TARGET_INTERFACE} ${KWSYS_LINK_DEPENDENCY}
+          socket)
       ENDIF()
     ENDIF()
   ENDIF()
 
   # Apply user-defined target properties to the library.
   IF(KWSYS_PROPERTIES_CXX)
-    SET_TARGET_PROPERTIES(${KWSYS_NAMESPACE} PROPERTIES
-      ${KWSYS_PROPERTIES_CXX}
-      )
+    SET_TARGET_PROPERTIES(${KWSYS_TARGET_INTERFACE} PROPERTIES
+      ${KWSYS_PROPERTIES_CXX})
+  ENDIF()
+
+  # Set up include usage requirement
+  IF(COMMAND TARGET_INCLUDE_DIRECTORIES)
+    TARGET_INCLUDE_DIRECTORIES(${KWSYS_TARGET_INTERFACE} INTERFACE
+      $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
+    IF(KWSYS_INSTALL_INCLUDE_DIR)
+      TARGET_INCLUDE_DIRECTORIES(${KWSYS_TARGET_INTERFACE} INTERFACE
+        $<INSTALL_INTERFACE:${KWSYS_INSTALL_INCLUDE_DIR}>)
+    ENDIF()
   ENDIF()
 
   # Create an install target for the library.
   IF(KWSYS_INSTALL_LIBRARY_RULE)
-    INSTALL(TARGETS ${KWSYS_NAMESPACE} ${KWSYS_INSTALL_LIBRARY_RULE})
+    INSTALL(TARGETS ${KWSYS_TARGET_INSTALL} ${KWSYS_INSTALL_LIBRARY_RULE})
   ENDIF()
 ENDIF()
 
 # Add a C-only library if requested.
 IF(KWSYS_ENABLE_C AND KWSYS_C_SRCS)
-  ADD_LIBRARY(${KWSYS_NAMESPACE}_c ${KWSYS_LIBRARY_TYPE} ${KWSYS_C_SRCS})
-  SET_PROPERTY(TARGET ${KWSYS_NAMESPACE}_c PROPERTY LABELS ${KWSYS_LABELS_LIB})
+ IF(KWSYS_SPLIT_OBJECTS_FROM_INTERFACE)
+    SET(KWSYS_TARGET_C_INTERFACE ${KWSYS_NAMESPACE}_c)
+    SET(KWSYS_TARGET_C_OBJECT ${KWSYS_NAMESPACE}_c_objects)
+    SET(KWSYS_TARGET_C_LINK ${KWSYS_NAMESPACE}_c_private)
+    SET(KWSYS_TARGET_C_INSTALL
+      ${KWSYS_TARGET_C_INTERFACE} ${KWSYS_TARGET_C_LINK})
+    SET(KWSYS_LINK_DEPENDENCY INTERFACE)
+    ADD_LIBRARY(${KWSYS_TARGET_C_OBJECT} OBJECT ${KWSYS_C_SRCS})
+    IF(KWSYS_BUILD_SHARED)
+      SET_PROPERTY(TARGET ${KWSYS_TARGET_C_OBJECT} PROPERTY
+        POSITION_INDEPENDENT_CODE TRUE)
+    ENDIF()
+    ADD_LIBRARY(${KWSYS_TARGET_C_INTERFACE} INTERFACE)
+    ADD_LIBRARY(${KWSYS_TARGET_C_LINK} INTERFACE)
+    TARGET_LINK_LIBRARIES(${KWSYS_TARGET_C_LINK} INTERFACE
+      ${KWSYS_TARGET_C_INTERFACE})
+    TARGET_SOURCES(${KWSYS_TARGET_C_LINK} INTERFACE
+      $<TARGET_OBJECTS:${KWSYS_TARGET_C_OBJECT}>)
+  ELSE()
+    SET(KWSYS_TARGET_C_INTERFACE ${KWSYS_NAMESPACE}_c)
+    SET(KWSYS_TARGET_C_OBJECT ${KWSYS_NAMESPACE}_c)
+    SET(KWSYS_TARGET_C_LINK ${KWSYS_NAMESPACE}_c)
+    SET(KWSYS_TARGET_C_INSTALL ${KWSYS_TARGET_C_LINK})
+    SET(KWSYS_LINK_DEPENDENCY PUBLIC)
+    ADD_LIBRARY(${KWSYS_TARGET_C_INTERFACE} ${KWSYS_LIBRARY_TYPE}
+      ${KWSYS_C_SRCS})
+  ENDIF()
+  SET_TARGET_PROPERTIES(${KWSYS_TARGET_C_OBJECT} PROPERTIES
+    LABELS "${KWSYS_LABELS_LIB}")
 
   # Apply user-defined target properties to the library.
   IF(KWSYS_PROPERTIES_C)
-    SET_TARGET_PROPERTIES(${KWSYS_NAMESPACE}_c PROPERTIES
-      ${KWSYS_PROPERTIES_C}
-      )
+    SET_TARGET_PROPERTIES(${KWSYS_TARGET_C_INTERFACE} PROPERTIES
+      ${KWSYS_PROPERTIES_C})
+  ENDIF()
+
+  # Set up include usage requirement
+  IF(COMMAND TARGET_INCLUDE_DIRECTORIES)
+    TARGET_INCLUDE_DIRECTORIES(${KWSYS_TARGET_C_INTERFACE} INTERFACE
+      $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
+    IF(KWSYS_INSTALL_INCLUDE_DIR)
+      TARGET_INCLUDE_DIRECTORIES(${KWSYS_TARGET_C_INTERFACE} INTERFACE
+        $<INSTALL_INTERFACE:${KWSYS_INSTALL_INCLUDE_DIR}>)
+    ENDIF()
   ENDIF()
 
   # Create an install target for the library.
   IF(KWSYS_INSTALL_LIBRARY_RULE)
-    INSTALL(TARGETS ${KWSYS_NAMESPACE}_c ${KWSYS_INSTALL_LIBRARY_RULE})
+    INSTALL(TARGETS ${KWSYS_TARGET_C_INSTALL})
   ENDIF()
 ENDIF()
 
@@ -915,7 +1015,7 @@ IF(KWSYS_STANDALONE OR CMake_SOURCE_DIR)
       )
     ADD_EXECUTABLE(${KWSYS_NAMESPACE}TestsC ${KWSYS_C_TEST_SRCS})
     SET_PROPERTY(TARGET ${KWSYS_NAMESPACE}TestsC PROPERTY LABELS ${KWSYS_LABELS_EXE})
-    TARGET_LINK_LIBRARIES(${KWSYS_NAMESPACE}TestsC ${KWSYS_NAMESPACE}_c)
+    TARGET_LINK_LIBRARIES(${KWSYS_NAMESPACE}TestsC ${KWSYS_TARGET_C_LINK})
     FOREACH(test ${KWSYS_C_TESTS})
       ADD_TEST(kwsys.${test} ${EXEC_DIR}/${KWSYS_NAMESPACE}TestsC ${test} ${KWSYS_TEST_ARGS_${test}})
       SET_PROPERTY(TEST kwsys.${test} PROPERTY LABELS ${KWSYS_LABELS_TEST})
@@ -928,10 +1028,10 @@ IF(KWSYS_STANDALONE OR CMake_SOURCE_DIR)
         )
     ENDIF()
     SET(KWSYS_CXX_TESTS ${KWSYS_CXX_TESTS}
-      testIOS
       testSystemTools
       testCommandLineArguments
       testCommandLineArguments1
+      testDirectory
       )
     IF(KWSYS_STL_HAS_WSTRING)
       SET(KWSYS_CXX_TESTS ${KWSYS_CXX_TESTS}
@@ -950,7 +1050,7 @@ IF(KWSYS_STANDALONE OR CMake_SOURCE_DIR)
       SET_PROPERTY(TARGET testConsoleBufChild PROPERTY C_INCLUDE_WHAT_YOU_USE "")
       SET_PROPERTY(TARGET testConsoleBufChild PROPERTY CXX_INCLUDE_WHAT_YOU_USE "")
       SET_PROPERTY(TARGET testConsoleBufChild PROPERTY LABELS ${KWSYS_LABELS_EXE})
-      TARGET_LINK_LIBRARIES(testConsoleBufChild ${KWSYS_NAMESPACE})
+      TARGET_LINK_LIBRARIES(testConsoleBufChild ${KWSYS_TARGET_LINK})
       SET(KWSYS_CXX_TESTS ${KWSYS_CXX_TESTS}
         testConsoleBuf
         )
@@ -969,7 +1069,7 @@ IF(KWSYS_STANDALONE OR CMake_SOURCE_DIR)
       # If kwsys contains the DynamicLoader, need extra library
       ADD_LIBRARY(${KWSYS_NAMESPACE}TestDynload MODULE testDynload.c)
       SET_PROPERTY(TARGET ${KWSYS_NAMESPACE}TestDynload PROPERTY LABELS ${KWSYS_LABELS_LIB})
-      ADD_DEPENDENCIES(${KWSYS_NAMESPACE}TestDynload ${KWSYS_NAMESPACE})
+      ADD_DEPENDENCIES(${KWSYS_NAMESPACE}TestDynload ${KWSYS_TARGET_INTERFACE})
     ENDIF()
     CREATE_TEST_SOURCELIST(
       KWSYS_CXX_TEST_SRCS ${KWSYS_NAMESPACE}TestsCxx.cxx
@@ -981,7 +1081,7 @@ IF(KWSYS_STANDALONE OR CMake_SOURCE_DIR)
     SET_PROPERTY(TARGET ${KWSYS_NAMESPACE}TestsCxx PROPERTY C_INCLUDE_WHAT_YOU_USE "")
     SET_PROPERTY(TARGET ${KWSYS_NAMESPACE}TestsCxx PROPERTY CXX_INCLUDE_WHAT_YOU_USE "")
     SET_PROPERTY(TARGET ${KWSYS_NAMESPACE}TestsCxx PROPERTY LABELS ${KWSYS_LABELS_EXE})
-    TARGET_LINK_LIBRARIES(${KWSYS_NAMESPACE}TestsCxx ${KWSYS_NAMESPACE})
+    TARGET_LINK_LIBRARIES(${KWSYS_NAMESPACE}TestsCxx ${KWSYS_TARGET_LINK})
 
     SET(TEST_SYSTEMTOOLS_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
     SET(TEST_SYSTEMTOOLS_BINARY_DIR "${CMAKE_CURRENT_BINARY_DIR}")
@@ -1032,7 +1132,7 @@ IF(KWSYS_STANDALONE OR CMake_SOURCE_DIR)
     # Process tests.
     ADD_EXECUTABLE(${KWSYS_NAMESPACE}TestProcess testProcess.c)
     SET_PROPERTY(TARGET ${KWSYS_NAMESPACE}TestProcess PROPERTY LABELS ${KWSYS_LABELS_EXE})
-    TARGET_LINK_LIBRARIES(${KWSYS_NAMESPACE}TestProcess ${KWSYS_NAMESPACE}_c)
+    TARGET_LINK_LIBRARIES(${KWSYS_NAMESPACE}TestProcess ${KWSYS_TARGET_C_LINK})
     IF(NOT CYGWIN)
       SET(KWSYS_TEST_PROCESS_7 7)
     ENDIF()
@@ -1060,7 +1160,7 @@ IF(KWSYS_STANDALONE OR CMake_SOURCE_DIR)
     ADD_EXECUTABLE(${KWSYS_NAMESPACE}TestSharedForward
                    ${PROJECT_BINARY_DIR}/testSharedForward.c)
     SET_PROPERTY(TARGET ${KWSYS_NAMESPACE}TestSharedForward PROPERTY LABELS ${KWSYS_LABELS_EXE})
-    ADD_DEPENDENCIES(${KWSYS_NAMESPACE}TestSharedForward ${KWSYS_NAMESPACE}_c)
+    ADD_DEPENDENCIES(${KWSYS_NAMESPACE}TestSharedForward ${KWSYS_TARGET_C_LINK})
     ADD_TEST(kwsys.testSharedForward ${EXEC_DIR}/${KWSYS_NAMESPACE}TestSharedForward 1)
     SET_PROPERTY(TEST kwsys.testSharedForward PROPERTY LABELS ${KWSYS_LABELS_TEST})
 
diff --git a/Source/kwsys/Directory.cxx b/Source/kwsys/Directory.cxx
index 5141d4519..69068aaf8 100644
--- a/Source/kwsys/Directory.cxx
+++ b/Source/kwsys/Directory.cxx
@@ -118,8 +118,8 @@ bool Directory::Load(const std::string& name)
   struct _wfinddata_t data; // data of current file
 
   // Now put them into the file array
-  srchHandle =
-    _wfindfirst_func((wchar_t*)Encoding::ToWide(buf).c_str(), &data);
+  srchHandle = _wfindfirst_func(
+    (wchar_t*)Encoding::ToWindowsExtendedPath(buf).c_str(), &data);
   delete[] buf;
 
   if (srchHandle == -1) {
diff --git a/Source/kwsys/ProcessUNIX.c b/Source/kwsys/ProcessUNIX.c
index 9ebcfce59..3b32ca7d0 100644
--- a/Source/kwsys/ProcessUNIX.c
+++ b/Source/kwsys/ProcessUNIX.c
@@ -99,7 +99,8 @@ static inline void kwsysProcess_usleep(unsigned int msec)
  * pipes' file handles to be non-blocking and just poll them directly
  * without select().
  */
-#if !defined(__BEOS__) && !defined(__VMS) && !defined(__MINT__)
+#if !defined(__BEOS__) && !defined(__VMS) && !defined(__MINT__) &&            \
+  !defined(KWSYSPE_USE_SELECT)
 #define KWSYSPE_USE_SELECT 1
 #endif
 
diff --git a/Source/kwsys/RegularExpression.cxx b/Source/kwsys/RegularExpression.cxx
index 6d7f83295..26e84e04e 100644
--- a/Source/kwsys/RegularExpression.cxx
+++ b/Source/kwsys/RegularExpression.cxx
@@ -258,11 +258,6 @@ const unsigned char MAGIC = 0234;
 
 #define UCHARAT(p) (reinterpret_cast<const unsigned char*>(p))[0]
 
-#define FAIL(m)                                                               \
-  {                                                                           \
-    regerror(m);                                                              \
-    return (0);                                                               \
-  }
 #define ISMULT(c) ((c) == '*' || (c) == '+' || (c) == '?')
 #define META "^$.[()|?+*\\"
 
diff --git a/Source/kwsys/SystemTools.cxx b/Source/kwsys/SystemTools.cxx
index 1c4fe3389..ecfa3319b 100644
--- a/Source/kwsys/SystemTools.cxx
+++ b/Source/kwsys/SystemTools.cxx
@@ -22,7 +22,6 @@
 #include KWSYS_HEADER(FStream.hxx)
 #include KWSYS_HEADER(Encoding.hxx)
 
-#include <algorithm>
 #include <fstream>
 #include <iostream>
 #include <set>
@@ -848,6 +847,8 @@ void SystemTools::ReplaceString(std::string& source, const char* replace,
   free(orig);
 }
 
+#if defined(_WIN32) && !defined(__CYGWIN__)
+
 #if defined(KEY_WOW64_32KEY) && defined(KEY_WOW64_64KEY)
 #define KWSYS_ST_KEY_WOW64_32KEY KEY_WOW64_32KEY
 #define KWSYS_ST_KEY_WOW64_64KEY KEY_WOW64_64KEY
@@ -856,7 +857,6 @@ void SystemTools::ReplaceString(std::string& source, const char* replace,
 #define KWSYS_ST_KEY_WOW64_64KEY 0x0100
 #endif
 
-#if defined(_WIN32) && !defined(__CYGWIN__)
 static bool SystemToolsParseRegistryKey(const std::string& key,
                                         HKEY& primaryKey, std::string& second,
                                         std::string& valuename)
@@ -2269,11 +2269,7 @@ bool SystemTools::CopyADirectory(const std::string& source,
                                  const std::string& destination, bool always)
 {
   Directory dir;
-#ifdef _WIN32
-  dir.Load(Encoding::ToNarrow(Encoding::ToWindowsExtendedPath(source)));
-#else
   dir.Load(source);
-#endif
   size_t fileNum;
   if (!SystemTools::MakeDirectory(destination)) {
     return false;
@@ -2375,104 +2371,6 @@ long int SystemTools::CreationTime(const std::string& filename)
   return ct;
 }
 
-bool SystemTools::ConvertDateMacroString(const char* str, time_t* tmt)
-{
-  if (!str || !tmt || strlen(str) > 11) {
-    return false;
-  }
-
-  struct tm tmt2;
-
-  // __DATE__
-  // The compilation date of the current source file. The date is a string
-  // literal of the form Mmm dd yyyy. The month name Mmm is the same as for
-  // dates generated by the library function asctime declared in TIME.H.
-
-  // index:   012345678901
-  // format:  Mmm dd yyyy
-  // example: Dec 19 2003
-
-  static char month_names[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
-
-  char buffer[12];
-  strcpy(buffer, str);
-
-  buffer[3] = 0;
-  char* ptr = strstr(month_names, buffer);
-  if (!ptr) {
-    return false;
-  }
-
-  int month = static_cast<int>((ptr - month_names) / 3);
-  int day = atoi(buffer + 4);
-  int year = atoi(buffer + 7);
-
-  tmt2.tm_isdst = -1;
-  tmt2.tm_hour = 0;
-  tmt2.tm_min = 0;
-  tmt2.tm_sec = 0;
-  tmt2.tm_wday = 0;
-  tmt2.tm_yday = 0;
-  tmt2.tm_mday = day;
-  tmt2.tm_mon = month;
-  tmt2.tm_year = year - 1900;
-
-  *tmt = mktime(&tmt2);
-  return true;
-}
-
-bool SystemTools::ConvertTimeStampMacroString(const char* str, time_t* tmt)
-{
-  if (!str || !tmt || strlen(str) > 26) {
-    return false;
-  }
-
-  struct tm tmt2;
-
-  // __TIMESTAMP__
-  // The date and time of the last modification of the current source file,
-  // expressed as a string literal in the form Ddd Mmm Date hh:mm:ss yyyy,
-  /// where Ddd is the abbreviated day of the week and Date is an integer
-  // from 1 to 31.
-
-  // index:   0123456789
-  //                    0123456789
-  //                              0123456789
-  // format:  Ddd Mmm Date hh:mm:ss yyyy
-  // example: Fri Dec 19 14:34:58 2003
-
-  static char month_names[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
-
-  char buffer[27];
-  strcpy(buffer, str);
-
-  buffer[7] = 0;
-  char* ptr = strstr(month_names, buffer + 4);
-  if (!ptr) {
-    return false;
-  }
-
-  int month = static_cast<int>((ptr - month_names) / 3);
-  int day = atoi(buffer + 8);
-  int hour = atoi(buffer + 11);
-  int min = atoi(buffer + 14);
-  int sec = atoi(buffer + 17);
-  int year = atoi(buffer + 20);
-
-  tmt2.tm_isdst = -1;
-  tmt2.tm_hour = hour;
-  tmt2.tm_min = min;
-  tmt2.tm_sec = sec;
-  tmt2.tm_wday = 0;
-  tmt2.tm_yday = 0;
-  tmt2.tm_mday = day;
-  tmt2.tm_mon = month;
-  tmt2.tm_year = year - 1900;
-
-  *tmt = mktime(&tmt2);
-  return true;
-}
-
 std::string SystemTools::GetLastSystemError()
 {
   int e = errno;
@@ -2626,11 +2524,7 @@ bool SystemTools::RemoveADirectory(const std::string& source)
   }
 
   Directory dir;
-#ifdef _WIN32
-  dir.Load(Encoding::ToNarrow(Encoding::ToWindowsExtendedPath(source)));
-#else
   dir.Load(source);
-#endif
   size_t fileNum;
   for (fileNum = 0; fileNum < dir.GetNumberOfFiles(); ++fileNum) {
     if (strcmp(dir.GetFile(static_cast<unsigned long>(fileNum)), ".") &&
@@ -3709,16 +3603,6 @@ std::string SystemTools::JoinPath(
   return result;
 }
 
-void SystemTools::RemoveEmptyPathElements(std::vector<std::string>& path)
-{
-  if (path.empty()) {
-    return;
-  }
-
-  path.erase(std::remove(path.begin() + 1, path.end(), std::string("")),
-             path.end());
-}
-
 bool SystemTools::ComparePath(const std::string& c1, const std::string& c2)
 {
 #if defined(_WIN32) || defined(__APPLE__)
@@ -3807,11 +3691,7 @@ std::string SystemTools::GetFilenamePath(const std::string& filename)
  */
 std::string SystemTools::GetFilenameName(const std::string& filename)
 {
-#if defined(_WIN32)
   std::string::size_type slash_pos = filename.find_last_of("/\\");
-#else
-  std::string::size_type slash_pos = filename.rfind('/');
-#endif
   if (slash_pos != std::string::npos) {
     return filename.substr(slash_pos + 1);
   } else {
@@ -4124,66 +4004,6 @@ bool SystemTools::GetShortPath(const std::string& path, std::string& shortPath)
 #endif
 }
 
-void SystemTools::SplitProgramFromArgs(const std::string& path,
-                                       std::string& program, std::string& args)
-{
-  // see if this is a full path to a program
-  // if so then set program to path and args to nothing
-  if (SystemTools::FileExists(path)) {
-    program = path;
-    args = "";
-    return;
-  }
-  // Try to find the program in the path, note the program
-  // may have spaces in its name so we have to look for it
-  std::vector<std::string> e;
-  std::string findProg = SystemTools::FindProgram(path, e);
-  if (!findProg.empty()) {
-    program = findProg;
-    args = "";
-    return;
-  }
-
-  // Now try and peel off space separated chunks from the end of the string
-  // so the largest path possible is found allowing for spaces in the path
-  std::string dir = path;
-  std::string::size_type spacePos = dir.rfind(' ');
-  while (spacePos != std::string::npos) {
-    std::string tryProg = dir.substr(0, spacePos);
-    // See if the file exists
-    if (SystemTools::FileExists(tryProg)) {
-      program = tryProg;
-      // remove trailing spaces from program
-      std::string::size_type pos = program.size() - 1;
-      while (program[pos] == ' ') {
-        program.erase(pos);
-        pos--;
-      }
-      args = dir.substr(spacePos, dir.size() - spacePos);
-      return;
-    }
-    // Now try and find the program in the path
-    findProg = SystemTools::FindProgram(tryProg, e);
-    if (!findProg.empty()) {
-      program = findProg;
-      // remove trailing spaces from program
-      std::string::size_type pos = program.size() - 1;
-      while (program[pos] == ' ') {
-        program.erase(pos);
-        pos--;
-      }
-      args = dir.substr(spacePos, dir.size() - spacePos);
-      return;
-    }
-    // move past the space for the next search
-    spacePos--;
-    spacePos = dir.rfind(' ', spacePos);
-  }
-
-  program = "";
-  args = "";
-}
-
 std::string SystemTools::GetCurrentDateTime(const char* format)
 {
   char buf[1024];
diff --git a/Source/kwsys/SystemTools.hxx.in b/Source/kwsys/SystemTools.hxx.in
index 5e091c2af..35bc1b19b 100644
--- a/Source/kwsys/SystemTools.hxx.in
+++ b/Source/kwsys/SystemTools.hxx.in
@@ -206,13 +206,6 @@ public:
   static int Strucmp(const char* s1, const char* s2);
 
   /**
-   * Convert a string in __DATE__ or __TIMESTAMP__ format into a time_t.
-   * Return false on error, true on success
-   */
-  static bool ConvertDateMacroString(const char* str, time_t* tmt);
-  static bool ConvertTimeStampMacroString(const char* str, time_t* tmt);
-
-  /**
    * Split a string on its newlines into multiple lines
    * Return false only if the last line stored had no newline
    */
@@ -461,6 +454,10 @@ public:
    * produce the original path.  Home directory references are
    * automatically expanded if expand_home_dir is true and this
    * platform supports them.
+   *
+   * This does *not* normalize the input path.  All components are
+   * preserved, including empty ones.  Typically callers should use
+   * this only on paths that have already been normalized.
    */
   static void SplitPath(const std::string& p,
                         std::vector<std::string>& components,
@@ -469,15 +466,15 @@ public:
   /**
    * Join components of a path name into a single string.  See
    * SplitPath for the format of the components.
+   *
+   * This does *not* normalize the input path.  All components are
+   * preserved, including empty ones.  Typically callers should use
+   * this only on paths that have already been normalized.
    */
   static std::string JoinPath(const std::vector<std::string>& components);
   static std::string JoinPath(std::vector<std::string>::const_iterator first,
                               std::vector<std::string>::const_iterator last);
 
-  /** Removes empty components from path.
-   */
-  static void RemoveEmptyPathElements(std::vector<std::string>& path);
-
   /**
    * Compare a path or components of a path.
    */
@@ -494,12 +491,6 @@ public:
   static std::string GetFilenameName(const std::string&);
 
   /**
-   * Split a program from its arguments and handle spaces in the paths
-   */
-  static void SplitProgramFromArgs(const std::string& path,
-                                   std::string& program, std::string& args);
-
-  /**
    * Return longest file extension of a full filename (dot included)
    */
   static std::string GetFilenameExtension(const std::string&);
diff --git a/Source/kwsys/kwsysPlatformTestsCXX.cxx b/Source/kwsys/kwsysPlatformTestsCXX.cxx
index 01c69514c..e67d43662 100644
--- a/Source/kwsys/kwsysPlatformTestsCXX.cxx
+++ b/Source/kwsys/kwsysPlatformTestsCXX.cxx
@@ -265,6 +265,12 @@ int main()
 #ifdef TEST_KWSYS_CXX_HAS_UTIMENSAT
 #include <fcntl.h>
 #include <sys/stat.h>
+#if defined(__APPLE__)
+#include <AvailabilityMacros.h>
+#if MAC_OS_X_VERSION_MIN_REQUIRED < 101300
+#error "utimensat not available on macOS < 10.13"
+#endif
+#endif
 int main()
 {
   struct timespec times[2] = { { 0, UTIME_OMIT }, { 0, UTIME_NOW } };
diff --git a/Source/kwsys/testDirectory.cxx b/Source/kwsys/testDirectory.cxx
new file mode 100644
index 000000000..983f2c631
--- /dev/null
+++ b/Source/kwsys/testDirectory.cxx
@@ -0,0 +1,79 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+file Copyright.txt or https://cmake.org/licensing#kwsys for details.  */
+#include "kwsysPrivate.h"
+#include KWSYS_HEADER(Directory.hxx)
+#include KWSYS_HEADER(Encoding.hxx)
+#include KWSYS_HEADER(SystemTools.hxx)
+
+// Work-around CMake dependency scanning limitation.  This must
+// duplicate the above list of headers.
+#if 0
+#include "Directory.hxx.in"
+#include "Encoding.hxx.in"
+#include "SystemTools.hxx.in"
+#endif
+
+#include <fstream>
+#include <iostream>
+#include <sstream>
+
+#include <testSystemTools.h>
+
+int _doLongPathTest()
+{
+  using namespace kwsys;
+  static const int LONG_PATH_THRESHOLD = 512;
+  int res = 0;
+  std::string topdir(TEST_SYSTEMTOOLS_BINARY_DIR "/directory_testing/");
+  std::stringstream testpathstrm;
+  std::string testdirpath;
+  std::string extendedtestdirpath;
+
+  testpathstrm << topdir;
+  size_t pathlen = testpathstrm.str().length();
+  testpathstrm.seekp(0, std::ios_base::end);
+  while (pathlen < LONG_PATH_THRESHOLD) {
+    testpathstrm << "0123456789/";
+    pathlen = testpathstrm.str().length();
+  }
+
+  testdirpath = testpathstrm.str();
+#ifdef _WIN32
+  extendedtestdirpath =
+    Encoding::ToNarrow(SystemTools::ConvertToWindowsExtendedPath(testdirpath));
+#else
+  extendedtestdirpath = testdirpath;
+#endif
+
+  if (SystemTools::MakeDirectory(extendedtestdirpath)) {
+    std::ofstream testfile1(
+      (extendedtestdirpath + "longfilepathtest1.txt").c_str());
+    std::ofstream testfile2(
+      (extendedtestdirpath + "longfilepathtest2.txt").c_str());
+    testfile1 << "foo";
+    testfile2 << "bar";
+    testfile1.close();
+    testfile2.close();
+
+    Directory testdir;
+    // Set res to failure if the directory doesn't load
+    res += !testdir.Load(testdirpath);
+    // Increment res failure if the directory appears empty
+    res += testdir.GetNumberOfFiles() == 0;
+    // Increment res failures if the path has changed from
+    // what was provided.
+    res += testdirpath != testdir.GetPath();
+
+    SystemTools::RemoveADirectory(topdir);
+  } else {
+    std::cerr << "Failed to create directory with long path: "
+              << extendedtestdirpath << std::endl;
+    res += 1;
+  }
+  return res;
+}
+
+int testDirectory(int, char* [])
+{
+  return _doLongPathTest();
+}
diff --git a/Source/kwsys/testIOS.cxx b/Source/kwsys/testIOS.cxx
deleted file mode 100644
index 3e4c325c7..000000000
--- a/Source/kwsys/testIOS.cxx
+++ /dev/null
@@ -1,139 +0,0 @@
-/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
-   file Copyright.txt or https://cmake.org/licensing#kwsys for details.  */
-#include "kwsysPrivate.h"
-#include KWSYS_HEADER(Configure.hxx)
-
-#include <fstream>
-#include <iostream>
-#include <sstream>
-#include <string.h> /* strlen */
-#include <vector>
-
-// Work-around CMake dependency scanning limitation.  This must
-// duplicate the above list of headers.
-#if 0
-#include "Configure.hxx.in"
-#endif
-
-int testIOS(int, char* [])
-{
-  std::ostringstream ostr;
-  const char hello[] = "hello";
-  ostr << hello;
-  if (ostr.str() != hello) {
-    std::cerr << "failed to write hello to ostr" << std::endl;
-    return 1;
-  }
-  const char world[] = "world";
-  std::ostringstream ostr2;
-  ostr2.write(hello, strlen(hello)); /* I could do sizeof */
-  ostr2.put('\0');
-  ostr2.write(world, strlen(world));
-  if (ostr2.str().size() != strlen(hello) + 1 + strlen(world)) {
-    std::cerr << "failed to write hello to ostr2" << std::endl;
-    return 1;
-  }
-  static const unsigned char array[] = {
-    0xff, 0x4f, 0xff, 0x51, 0x00, 0x29, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30,
-    0x00, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-    0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x00, 0x00,
-    0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x07, 0x01, 0x01, 0xff, 0x52, 0x00,
-    0x0c, 0x00, 0x00, 0x00, 0x01, 0x00, 0x05, 0x04, 0x04, 0x00, 0x01, 0xff,
-    0x5c, 0x00, 0x13, 0x40, 0x40, 0x48, 0x48, 0x50, 0x48, 0x48, 0x50, 0x48,
-    0x48, 0x50, 0x48, 0x48, 0x50, 0x48, 0x48, 0x50, 0xff, 0x64, 0x00, 0x2c,
-    0x00, 0x00, 0x43, 0x72, 0x65, 0x61, 0x74, 0x65, 0x64, 0x20, 0x62, 0x79,
-    0x20, 0x49, 0x54, 0x4b, 0x2f, 0x47, 0x44, 0x43, 0x4d, 0x2f, 0x4f, 0x70,
-    0x65, 0x6e, 0x4a, 0x50, 0x45, 0x47, 0x20, 0x76, 0x65, 0x72, 0x73, 0x69,
-    0x6f, 0x6e, 0x20, 0x31, 0x2e, 0x30, 0xff, 0x90, 0x00, 0x0a, 0x00, 0x00,
-    0x00, 0x00, 0x06, 0x2c, 0x00, 0x01, 0xff, 0x93, 0xcf, 0xb0, 0x18, 0x08,
-    0x7f, 0xc6, 0x99, 0xbf, 0xff, 0xc0, 0xf8, 0xc1, 0xc1, 0xf3, 0x05, 0x81,
-    0xf2, 0x83, 0x0a, 0xa5, 0xff, 0x10, 0x90, 0xbf, 0x2f, 0xff, 0x04, 0xa8,
-    0x7f, 0xc0, 0xf8, 0xc4, 0xc1, 0xf3, 0x09, 0x81, 0xf3, 0x0c, 0x19, 0x34
-  };
-  const size_t narray = sizeof(array); // 180
-  std::stringstream strstr;
-  strstr.write((char*)array, narray);
-  // strstr.seekp( narray / 2 ); // set position of put pointer in mid string
-  if (strstr.str().size() != narray) {
-    std::cerr << "failed to write array to strstr" << std::endl;
-    return 1;
-  }
-
-  std::istringstream istr(" 10 20 str ");
-  std::string s;
-  int x;
-  if (istr >> x) {
-    if (x != 10) {
-      std::cerr << "x != 10" << std::endl;
-      return 1;
-    }
-  } else {
-    std::cerr << "Failed to read 10 from istr" << std::endl;
-    return 1;
-  }
-  if (istr >> x) {
-    if (x != 20) {
-      std::cerr << "x != 20" << std::endl;
-      return 1;
-    }
-  } else {
-    std::cerr << "Failed to read 20 from istr" << std::endl;
-    return 1;
-  }
-  if (istr >> s) {
-    if (s != "str") {
-      std::cerr << "s != \"str\"" << std::endl;
-      return 1;
-    }
-  } else {
-    std::cerr << "Failed to read str from istr" << std::endl;
-    return 1;
-  }
-  if (istr >> s) {
-    std::cerr << "Able to read past end of stream" << std::endl;
-    return 1;
-  } else {
-    // Clear the failure.
-    istr.clear(istr.rdstate() & ~std::ios::eofbit);
-    istr.clear(istr.rdstate() & ~std::ios::failbit);
-  }
-  istr.str("30");
-  if (istr >> x) {
-    if (x != 30) {
-      std::cerr << "x != 30" << std::endl;
-      return 1;
-    }
-  } else {
-    std::cerr << "Failed to read 30 from istr" << std::endl;
-    return 1;
-  }
-
-  std::stringstream sstr;
-  sstr << "40 str2";
-  if (sstr >> x) {
-    if (x != 40) {
-      std::cerr << "x != 40" << std::endl;
-      return 1;
-    }
-  } else {
-    std::cerr << "Failed to read 40 from sstr" << std::endl;
-    return 1;
-  }
-  if (sstr >> s) {
-    if (s != "str2") {
-      std::cerr << "s != \"str2\"" << std::endl;
-      return 1;
-    }
-  } else {
-    std::cerr << "Failed to read str2 from sstr" << std::endl;
-    return 1;
-  }
-
-  // Just try to compile this.
-  if (x == 12345) {
-    std::ifstream fin("/does_not_exist", std::ios::in | std::ios::binary);
-  }
-
-  std::cout << "IOS tests passed" << std::endl;
-  return 0;
-}
diff --git a/Source/kwsys/testSystemTools.cxx b/Source/kwsys/testSystemTools.cxx
index e6fbf6cda..768eb4d12 100644
--- a/Source/kwsys/testSystemTools.cxx
+++ b/Source/kwsys/testSystemTools.cxx
@@ -22,6 +22,7 @@
 
 #include <iostream>
 #include <sstream>
+#include <stdlib.h> /* free */
 #include <string.h> /* strcmp */
 #if defined(_WIN32) && !defined(__CYGWIN__)
 #include <io.h> /* _umask (MSVC) / umask (Borland) */
@@ -535,15 +536,14 @@ static bool CheckStringOperations()
   }
   delete[] cres;
 
-  char* cres2 = new char[strlen("Mary Had A Little Lamb.") + 1];
-  strcpy(cres2, "Mary Had A Little Lamb.");
+  char* cres2 = strdup("Mary Had A Little Lamb.");
   kwsys::SystemTools::ReplaceChars(cres2, "aeiou", 'X');
   if (strcmp(cres2, "MXry HXd A LXttlX LXmb.")) {
     std::cerr << "Problem with ReplaceChars "
               << "\"Mary Had A Little Lamb.\"" << std::endl;
     res = false;
   }
-  delete[] cres2;
+  free(cres2);
 
   if (!kwsys::SystemTools::StringStartsWith("Mary Had A Little Lamb.",
                                             "Mary ")) {
@@ -758,6 +758,30 @@ static bool CheckGetPath()
   return res;
 }
 
+static bool CheckGetFilenameName()
+{
+  const char* windowsFilepath = "C:\\somewhere\\something";
+  const char* unixFilepath = "/somewhere/something";
+
+  std::string expectedFilename = "something";
+
+  bool res = true;
+  std::string filename = kwsys::SystemTools::GetFilenameName(windowsFilepath);
+  if (filename != expectedFilename) {
+    std::cerr << "GetFilenameName(" << windowsFilepath << ") yielded "
+              << filename << " instead of " << expectedFilename << std::endl;
+    res = false;
+  }
+
+  filename = kwsys::SystemTools::GetFilenameName(unixFilepath);
+  if (filename != expectedFilename) {
+    std::cerr << "GetFilenameName(" << unixFilepath << ") yielded " << filename
+              << " instead of " << expectedFilename << std::endl;
+    res = false;
+  }
+  return res;
+}
+
 static bool CheckFind()
 {
   bool res = true;
@@ -875,5 +899,7 @@ int testSystemTools(int, char* [])
 
   res &= CheckGetLineFromStream();
 
+  res &= CheckGetFilenameName();
+
   return res ? 0 : 1;
 }