diff options
Diffstat (limited to 'Source/cmCoreTryCompile.cxx')
-rw-r--r-- | Source/cmCoreTryCompile.cxx | 483 |
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; +} |