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-rw-r--r--Source/cmCoreTryCompile.cxx483
1 files changed, 483 insertions, 0 deletions
diff --git a/Source/cmCoreTryCompile.cxx b/Source/cmCoreTryCompile.cxx
new file mode 100644
index 000000000..1ae70350b
--- /dev/null
+++ b/Source/cmCoreTryCompile.cxx
@@ -0,0 +1,483 @@
+/*============================================================================
+ CMake - Cross Platform Makefile Generator
+ Copyright 2000-2011 Kitware, Inc., Insight Software Consortium
+
+ Distributed under the OSI-approved BSD License (the "License");
+ see accompanying file Copyright.txt for details.
+
+ This software is distributed WITHOUT ANY WARRANTY; without even the
+ implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ See the License for more information.
+============================================================================*/
+#include "cmCoreTryCompile.h"
+#include "cmake.h"
+#include "cmCacheManager.h"
+#include "cmGlobalGenerator.h"
+#include <cmsys/Directory.hxx>
+
+int cmCoreTryCompile::TryCompileCode(std::vector<std::string> const& argv)
+{
+ this->BinaryDirectory = argv[1].c_str();
+ this->OutputFile = "";
+ // which signature were we called with ?
+ this->SrcFileSignature = false;
+ unsigned int i;
+
+ const char* sourceDirectory = argv[2].c_str();
+ const char* projectName = 0;
+ const char* targetName = 0;
+ char targetNameBuf[64];
+ int extraArgs = 0;
+
+ // look for CMAKE_FLAGS and store them
+ std::vector<std::string> cmakeFlags;
+ for (i = 3; i < argv.size(); ++i)
+ {
+ if (argv[i] == "CMAKE_FLAGS")
+ {
+ // CMAKE_FLAGS is the first argument because we need an argv[0] that
+ // is not used, so it matches regular command line parsing which has
+ // the program name as arg 0
+ for (; i < argv.size() && argv[i] != "COMPILE_DEFINITIONS" &&
+ argv[i] != "OUTPUT_VARIABLE";
+ ++i)
+ {
+ extraArgs++;
+ cmakeFlags.push_back(argv[i]);
+ }
+ break;
+ }
+ }
+
+ // look for OUTPUT_VARIABLE and store them
+ std::string outputVariable;
+ for (i = 3; i < argv.size(); ++i)
+ {
+ if (argv[i] == "OUTPUT_VARIABLE")
+ {
+ if ( argv.size() <= (i+1) )
+ {
+ this->Makefile->IssueMessage(cmake::FATAL_ERROR,
+ "OUTPUT_VARIABLE specified but there is no variable");
+ return -1;
+ }
+ extraArgs += 2;
+ outputVariable = argv[i+1];
+ break;
+ }
+ }
+
+ // look for COMPILE_DEFINITIONS and store them
+ std::vector<std::string> compileFlags;
+ for (i = 3; i < argv.size(); ++i)
+ {
+ if (argv[i] == "COMPILE_DEFINITIONS")
+ {
+ extraArgs++;
+ for (i = i + 1; i < argv.size() && argv[i] != "CMAKE_FLAGS" &&
+ argv[i] != "OUTPUT_VARIABLE";
+ ++i)
+ {
+ extraArgs++;
+ compileFlags.push_back(argv[i]);
+ }
+ break;
+ }
+ }
+
+ // look for COPY_FILE
+ std::string copyFile;
+ for (i = 3; i < argv.size(); ++i)
+ {
+ if (argv[i] == "COPY_FILE")
+ {
+ if ( argv.size() <= (i+1) )
+ {
+ this->Makefile->IssueMessage(cmake::FATAL_ERROR,
+ "COPY_FILE specified but there is no variable");
+ return -1;
+ }
+ extraArgs += 2;
+ copyFile = argv[i+1];
+ break;
+ }
+ }
+
+ // do we have a srcfile signature
+ if (argv.size() - extraArgs == 3)
+ {
+ this->SrcFileSignature = true;
+ }
+
+ // compute the binary dir when TRY_COMPILE is called with a src file
+ // signature
+ if (this->SrcFileSignature)
+ {
+ this->BinaryDirectory += cmake::GetCMakeFilesDirectory();
+ this->BinaryDirectory += "/CMakeTmp";
+ }
+ else
+ {
+ // only valid for srcfile signatures
+ if (compileFlags.size())
+ {
+ this->Makefile->IssueMessage(cmake::FATAL_ERROR,
+ "COMPILE_FLAGS specified on a srcdir type TRY_COMPILE");
+ return -1;
+ }
+ if (copyFile.size())
+ {
+ this->Makefile->IssueMessage(cmake::FATAL_ERROR,
+ "COPY_FILE specified on a srcdir type TRY_COMPILE");
+ return -1;
+ }
+ }
+ // make sure the binary directory exists
+ cmSystemTools::MakeDirectory(this->BinaryDirectory.c_str());
+
+ // do not allow recursive try Compiles
+ if (this->BinaryDirectory == this->Makefile->GetHomeOutputDirectory())
+ {
+ cmOStringStream e;
+ e << "Attempt at a recursive or nested TRY_COMPILE in directory\n"
+ << " " << this->BinaryDirectory << "\n";
+ this->Makefile->IssueMessage(cmake::FATAL_ERROR, e.str());
+ return -1;
+ }
+
+ std::string outFileName = this->BinaryDirectory + "/CMakeLists.txt";
+ // which signature are we using? If we are using var srcfile bindir
+ if (this->SrcFileSignature)
+ {
+ // remove any CMakeCache.txt files so we will have a clean test
+ std::string ccFile = this->BinaryDirectory + "/CMakeCache.txt";
+ cmSystemTools::RemoveFile(ccFile.c_str());
+
+ // we need to create a directory and CMakeLists file etc...
+ // first create the directories
+ sourceDirectory = this->BinaryDirectory.c_str();
+
+ // now create a CMakeLists.txt file in that directory
+ FILE *fout = fopen(outFileName.c_str(),"w");
+ if (!fout)
+ {
+ cmOStringStream e;
+ e << "Failed to open\n"
+ << " " << outFileName.c_str() << "\n"
+ << cmSystemTools::GetLastSystemError();
+ this->Makefile->IssueMessage(cmake::FATAL_ERROR, e.str());
+ return -1;
+ }
+
+ std::string source = argv[2];
+ std::string ext = cmSystemTools::GetFilenameLastExtension(source);
+ const char* lang =(this->Makefile->GetCMakeInstance()->GetGlobalGenerator()
+ ->GetLanguageFromExtension(ext.c_str()));
+ const char* def = this->Makefile->GetDefinition("CMAKE_MODULE_PATH");
+ fprintf(fout, "cmake_minimum_required(VERSION %u.%u.%u.%u)\n",
+ cmVersion::GetMajorVersion(), cmVersion::GetMinorVersion(),
+ cmVersion::GetPatchVersion(), cmVersion::GetTweakVersion());
+ if(def)
+ {
+ fprintf(fout, "SET(CMAKE_MODULE_PATH %s)\n", def);
+ }
+
+ const char* rulesOverrideBase = "CMAKE_USER_MAKE_RULES_OVERRIDE";
+ std::string rulesOverrideLang =
+ rulesOverrideBase + (lang ? std::string("_") + lang : std::string(""));
+ if(const char* rulesOverridePath =
+ this->Makefile->GetDefinition(rulesOverrideLang.c_str()))
+ {
+ fprintf(fout, "SET(%s \"%s\")\n",
+ rulesOverrideLang.c_str(), rulesOverridePath);
+ }
+ else if(const char* rulesOverridePath2 =
+ this->Makefile->GetDefinition(rulesOverrideBase))
+ {
+ fprintf(fout, "SET(%s \"%s\")\n",
+ rulesOverrideBase, rulesOverridePath2);
+ }
+
+ if(lang)
+ {
+ fprintf(fout, "PROJECT(CMAKE_TRY_COMPILE %s)\n", lang);
+ }
+ else
+ {
+ fclose(fout);
+ cmOStringStream err;
+ err << "Unknown extension \"" << ext << "\" for file\n"
+ << " " << source << "\n"
+ << "try_compile() works only for enabled languages. "
+ << "Currently these are:\n ";
+ std::vector<std::string> langs;
+ this->Makefile->GetCMakeInstance()->GetGlobalGenerator()->
+ GetEnabledLanguages(langs);
+ for(std::vector<std::string>::iterator l = langs.begin();
+ l != langs.end(); ++l)
+ {
+ err << " " << *l;
+ }
+ err << "\nSee project() command to enable other languages.";
+ this->Makefile->IssueMessage(cmake::FATAL_ERROR, err.str());
+ return -1;
+ }
+ std::string langFlags = "CMAKE_";
+ langFlags += lang;
+ langFlags += "_FLAGS";
+ fprintf(fout, "SET(CMAKE_VERBOSE_MAKEFILE 1)\n");
+ fprintf(fout, "SET(CMAKE_%s_FLAGS \"", lang);
+ const char* flags = this->Makefile->GetDefinition(langFlags.c_str());
+ if(flags)
+ {
+ fprintf(fout, " %s ", flags);
+ }
+ fprintf(fout, " ${COMPILE_DEFINITIONS}\")\n");
+ fprintf(fout, "INCLUDE_DIRECTORIES(${INCLUDE_DIRECTORIES})\n");
+ fprintf(fout, "SET(CMAKE_SUPPRESS_REGENERATION 1)\n");
+ fprintf(fout, "LINK_DIRECTORIES(${LINK_DIRECTORIES})\n");
+ // handle any compile flags we need to pass on
+ if (compileFlags.size())
+ {
+ fprintf(fout, "ADD_DEFINITIONS( ");
+ for (i = 0; i < compileFlags.size(); ++i)
+ {
+ fprintf(fout,"%s ",compileFlags[i].c_str());
+ }
+ fprintf(fout, ")\n");
+ }
+
+ /* for the TRY_COMPILEs we want to be able to specify the architecture.
+ So the user can set CMAKE_OSX_ARCHITECTURE to i386;ppc and then set
+ CMAKE_TRY_COMPILE_OSX_ARCHITECTURE first to i386 and then to ppc to
+ have the tests run for each specific architecture. Since
+ cmLocalGenerator doesn't allow building for "the other"
+ architecture only via CMAKE_OSX_ARCHITECTURES.
+ */
+ if(this->Makefile->GetDefinition("CMAKE_TRY_COMPILE_OSX_ARCHITECTURES")!=0)
+ {
+ std::string flag="-DCMAKE_OSX_ARCHITECTURES=";
+ flag += this->Makefile->GetSafeDefinition(
+ "CMAKE_TRY_COMPILE_OSX_ARCHITECTURES");
+ cmakeFlags.push_back(flag);
+ }
+ else if (this->Makefile->GetDefinition("CMAKE_OSX_ARCHITECTURES")!=0)
+ {
+ std::string flag="-DCMAKE_OSX_ARCHITECTURES=";
+ flag += this->Makefile->GetSafeDefinition("CMAKE_OSX_ARCHITECTURES");
+ cmakeFlags.push_back(flag);
+ }
+ /* on APPLE also pass CMAKE_OSX_SYSROOT to the try_compile */
+ if(this->Makefile->GetDefinition("CMAKE_OSX_SYSROOT")!=0)
+ {
+ std::string flag="-DCMAKE_OSX_SYSROOT=";
+ flag += this->Makefile->GetSafeDefinition("CMAKE_OSX_SYSROOT");
+ cmakeFlags.push_back(flag);
+ }
+ /* on APPLE also pass CMAKE_OSX_DEPLOYMENT_TARGET to the try_compile */
+ if(this->Makefile->GetDefinition("CMAKE_OSX_DEPLOYMENT_TARGET")!=0)
+ {
+ std::string flag="-DCMAKE_OSX_DEPLOYMENT_TARGET=";
+ flag += this->Makefile->GetSafeDefinition("CMAKE_OSX_DEPLOYMENT_TARGET");
+ cmakeFlags.push_back(flag);
+ }
+ if(this->Makefile->GetDefinition("CMAKE_POSITION_INDEPENDENT_CODE")!=0)
+ {
+ fprintf(fout, "SET(CMAKE_POSITION_INDEPENDENT_CODE \"ON\")\n");
+ }
+
+ /* Use a random file name to avoid rapid creation and deletion
+ of the same executable name (some filesystems fail on that). */
+ sprintf(targetNameBuf, "cmTryCompileExec%u",
+ cmSystemTools::RandomSeed());
+ targetName = targetNameBuf;
+
+ /* Put the executable at a known location (for COPY_FILE). */
+ fprintf(fout, "SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY \"%s\")\n",
+ this->BinaryDirectory.c_str());
+ /* Create the actual executable. */
+ fprintf(fout, "ADD_EXECUTABLE(%s \"%s\")\n", targetName, source.c_str());
+ fprintf(fout, "TARGET_LINK_LIBRARIES(%s ${LINK_LIBRARIES})\n",targetName);
+ fclose(fout);
+ projectName = "CMAKE_TRY_COMPILE";
+ // if the source is not in CMakeTmp
+ if(source.find("CMakeTmp") == source.npos)
+ {
+ this->Makefile->AddCMakeDependFile(source.c_str());
+ }
+
+ }
+ // else the srcdir bindir project target signature
+ else
+ {
+ projectName = argv[3].c_str();
+
+ if (argv.size() - extraArgs == 5)
+ {
+ targetName = argv[4].c_str();
+ }
+ }
+
+ bool erroroc = cmSystemTools::GetErrorOccuredFlag();
+ cmSystemTools::ResetErrorOccuredFlag();
+ std::string output;
+ // actually do the try compile now that everything is setup
+ int res = this->Makefile->TryCompile(sourceDirectory,
+ this->BinaryDirectory.c_str(),
+ projectName,
+ targetName,
+ this->SrcFileSignature,
+ &cmakeFlags,
+ &output);
+ if ( erroroc )
+ {
+ cmSystemTools::SetErrorOccured();
+ }
+
+ // set the result var to the return value to indicate success or failure
+ this->Makefile->AddCacheDefinition(argv[0].c_str(),
+ (res == 0 ? "TRUE" : "FALSE"),
+ "Result of TRY_COMPILE",
+ cmCacheManager::INTERNAL);
+
+ if ( outputVariable.size() > 0 )
+ {
+ this->Makefile->AddDefinition(outputVariable.c_str(), output.c_str());
+ }
+
+ if (this->SrcFileSignature)
+ {
+ this->FindOutputFile(targetName);
+
+ if ((res==0) && (copyFile.size()))
+ {
+ if(this->OutputFile.empty() ||
+ !cmSystemTools::CopyFileAlways(this->OutputFile.c_str(),
+ copyFile.c_str()))
+ {
+ cmOStringStream emsg;
+ emsg << "Cannot copy output executable\n"
+ << " '" << this->OutputFile.c_str() << "'\n"
+ << "to destination specified by COPY_FILE:\n"
+ << " '" << copyFile.c_str() << "'\n";
+ if(!this->FindErrorMessage.empty())
+ {
+ emsg << this->FindErrorMessage.c_str();
+ }
+ this->Makefile->IssueMessage(cmake::FATAL_ERROR, emsg.str());
+ return -1;
+ }
+ }
+ }
+ return res;
+}
+
+void cmCoreTryCompile::CleanupFiles(const char* binDir)
+{
+ if ( !binDir )
+ {
+ return;
+ }
+
+ std::string bdir = binDir;
+ if(bdir.find("CMakeTmp") == std::string::npos)
+ {
+ cmSystemTools::Error(
+ "TRY_COMPILE attempt to remove -rf directory that does not contain "
+ "CMakeTmp:", binDir);
+ return;
+ }
+
+ cmsys::Directory dir;
+ dir.Load(binDir);
+ size_t fileNum;
+ std::set<cmStdString> deletedFiles;
+ for (fileNum = 0; fileNum < dir.GetNumberOfFiles(); ++fileNum)
+ {
+ if (strcmp(dir.GetFile(static_cast<unsigned long>(fileNum)),".") &&
+ strcmp(dir.GetFile(static_cast<unsigned long>(fileNum)),".."))
+ {
+
+ if(deletedFiles.find( dir.GetFile(static_cast<unsigned long>(fileNum)))
+ == deletedFiles.end())
+ {
+ deletedFiles.insert(dir.GetFile(static_cast<unsigned long>(fileNum)));
+ std::string fullPath = binDir;
+ fullPath += "/";
+ fullPath += dir.GetFile(static_cast<unsigned long>(fileNum));
+ if(cmSystemTools::FileIsDirectory(fullPath.c_str()))
+ {
+ this->CleanupFiles(fullPath.c_str());
+ cmSystemTools::RemoveADirectory(fullPath.c_str());
+ }
+ else
+ {
+ // Sometimes anti-virus software hangs on to new files so we
+ // cannot delete them immediately. Try a few times.
+ int tries = 5;
+ while(!cmSystemTools::RemoveFile(fullPath.c_str()) &&
+ --tries && cmSystemTools::FileExists(fullPath.c_str()))
+ {
+ cmSystemTools::Delay(500);
+ }
+ if(tries == 0)
+ {
+ std::string m = "Remove failed on file: " + fullPath;
+ cmSystemTools::ReportLastSystemError(m.c_str());
+ }
+ }
+ }
+ }
+ }
+}
+
+void cmCoreTryCompile::FindOutputFile(const char* targetName)
+{
+ this->FindErrorMessage = "";
+ this->OutputFile = "";
+ std::string tmpOutputFile = "/";
+ tmpOutputFile += targetName;
+ tmpOutputFile +=this->Makefile->GetSafeDefinition("CMAKE_EXECUTABLE_SUFFIX");
+
+ // a list of directories where to search for the compilation result
+ // at first directly in the binary dir
+ std::vector<std::string> searchDirs;
+ searchDirs.push_back("");
+
+ const char* config = this->Makefile->GetDefinition(
+ "CMAKE_TRY_COMPILE_CONFIGURATION");
+ // if a config was specified try that first
+ if (config && config[0])
+ {
+ std::string tmp = "/";
+ tmp += config;
+ searchDirs.push_back(tmp);
+ }
+ searchDirs.push_back("/Debug");
+ searchDirs.push_back("/Development");
+
+ for(std::vector<std::string>::const_iterator it = searchDirs.begin();
+ it != searchDirs.end();
+ ++it)
+ {
+ std::string command = this->BinaryDirectory;
+ command += *it;
+ command += tmpOutputFile;
+ if(cmSystemTools::FileExists(command.c_str()))
+ {
+ tmpOutputFile = cmSystemTools::CollapseFullPath(command.c_str());
+ this->OutputFile = tmpOutputFile;
+ return;
+ }
+ }
+
+ cmOStringStream emsg;
+ emsg << "Unable to find the executable at any of:\n";
+ for (unsigned int i = 0; i < searchDirs.size(); ++i)
+ {
+ emsg << " " << this->BinaryDirectory << searchDirs[i]
+ << tmpOutputFile << "\n";
+ }
+ this->FindErrorMessage = emsg.str();
+ return;
+}