mirror of
https://github.com/reactos/CMake.git
synced 2024-12-14 23:29:57 +00:00
96afb12087
This converts the CMake license to a pure 3-clause OSI-approved BSD License. We drop the previous license clause requiring modified versions to be plainly marked. We also update the CMake copyright to cover the full development time range.
536 lines
19 KiB
C++
536 lines
19 KiB
C++
/*============================================================================
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CMake - Cross Platform Makefile Generator
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Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
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Distributed under the OSI-approved BSD License (the "License");
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see accompanying file Copyright.txt for details.
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This software is distributed WITHOUT ANY WARRANTY; without even the
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implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the License for more information.
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============================================================================*/
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#include "cmSourceFile.h"
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#include "cmGlobalGenerator.h"
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#include "cmLocalGenerator.h"
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#include "cmMakefile.h"
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#include "cmSystemTools.h"
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#include "cmake.h"
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//----------------------------------------------------------------------------
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cmSourceFile::cmSourceFile(cmMakefile* mf, const char* name):
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Location(mf, name)
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{
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this->CustomCommand = 0;
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this->Properties.SetCMakeInstance(mf->GetCMakeInstance());
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this->FindFullPathFailed = false;
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}
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//----------------------------------------------------------------------------
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cmSourceFile::~cmSourceFile()
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{
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this->SetCustomCommand(0);
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}
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//----------------------------------------------------------------------------
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std::string const& cmSourceFile::GetExtension() const
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{
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return this->Extension;
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}
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//----------------------------------------------------------------------------
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const char* cmSourceFile::GetLanguage()
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{
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// If the language was set explicitly by the user then use it.
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if(const char* lang = this->GetProperty("LANGUAGE"))
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{
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return lang;
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}
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// Perform computation needed to get the language if necessary.
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if(this->FullPath.empty() && this->Language.empty())
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{
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// If a known extension is given or a known full path is given
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// then trust that the current extension is sufficient to
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// determine the language. This will fail only if the user
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// specifies a full path to the source but leaves off the
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// extension, which is kind of weird.
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if(this->Location.ExtensionIsAmbiguous() &&
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this->Location.DirectoryIsAmbiguous())
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{
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// Finalize the file location to get the extension and set the
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// language.
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this->GetFullPath();
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}
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else
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{
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// Use the known extension to get the language if possible.
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std::string ext =
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cmSystemTools::GetFilenameLastExtension(this->Location.GetName());
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this->CheckLanguage(ext);
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}
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}
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// Now try to determine the language.
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return static_cast<cmSourceFile const*>(this)->GetLanguage();
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}
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//----------------------------------------------------------------------------
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const char* cmSourceFile::GetLanguage() const
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{
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// If the language was set explicitly by the user then use it.
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if(const char* lang = this->GetProperty("LANGUAGE"))
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{
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return lang;
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}
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// If the language was determined from the source file extension use it.
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if(!this->Language.empty())
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{
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return this->Language.c_str();
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}
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// The language is not known.
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return 0;
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}
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//----------------------------------------------------------------------------
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cmSourceFileLocation const& cmSourceFile::GetLocation() const
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{
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return this->Location;
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}
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//----------------------------------------------------------------------------
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std::string const& cmSourceFile::GetFullPath()
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{
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if(this->FullPath.empty())
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{
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if(this->FindFullPath())
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{
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this->CheckExtension();
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}
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}
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return this->FullPath;
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}
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//----------------------------------------------------------------------------
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std::string const& cmSourceFile::GetFullPath() const
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{
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return this->FullPath;
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}
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//----------------------------------------------------------------------------
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bool cmSourceFile::FindFullPath()
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{
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// If thie method has already failed once do not try again.
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if(this->FindFullPathFailed)
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{
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return false;
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}
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// If the file is generated compute the location without checking on
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// disk.
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if(this->GetPropertyAsBool("GENERATED"))
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{
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// The file is either already a full path or is relative to the
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// build directory for the target.
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this->Location.DirectoryUseBinary();
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this->FullPath = this->Location.GetDirectory();
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this->FullPath += "/";
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this->FullPath += this->Location.GetName();
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return true;
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}
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// The file is not generated. It must exist on disk.
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cmMakefile* mf = this->Location.GetMakefile();
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const char* tryDirs[3] = {0, 0, 0};
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if(this->Location.DirectoryIsAmbiguous())
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{
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tryDirs[0] = mf->GetCurrentDirectory();
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tryDirs[1] = mf->GetCurrentOutputDirectory();
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}
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else
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{
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tryDirs[0] = "";
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}
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const std::vector<std::string>& srcExts = mf->GetSourceExtensions();
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const std::vector<std::string>& hdrExts = mf->GetHeaderExtensions();
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for(const char* const* di = tryDirs; *di; ++di)
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{
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std::string tryPath = this->Location.GetDirectory();
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if(!tryPath.empty())
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{
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tryPath += "/";
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}
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tryPath += this->Location.GetName();
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tryPath = cmSystemTools::CollapseFullPath(tryPath.c_str(), *di);
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if(this->TryFullPath(tryPath.c_str(), 0))
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{
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return true;
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}
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for(std::vector<std::string>::const_iterator ei = srcExts.begin();
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ei != srcExts.end(); ++ei)
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{
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if(this->TryFullPath(tryPath.c_str(), ei->c_str()))
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{
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return true;
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}
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}
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for(std::vector<std::string>::const_iterator ei = hdrExts.begin();
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ei != hdrExts.end(); ++ei)
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{
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if(this->TryFullPath(tryPath.c_str(), ei->c_str()))
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{
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return true;
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}
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}
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}
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cmOStringStream e;
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e << "Cannot find source file \"" << this->Location.GetName() << "\"";
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e << ". Tried extensions";
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for(std::vector<std::string>::const_iterator ext = srcExts.begin();
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ext != srcExts.end(); ++ext)
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{
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e << " ." << *ext;
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}
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for(std::vector<std::string>::const_iterator ext = hdrExts.begin();
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ext != hdrExts.end(); ++ext)
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{
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e << " ." << *ext;
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}
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this->Location.GetMakefile()->IssueMessage(cmake::FATAL_ERROR, e.str());
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this->FindFullPathFailed = true;
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return false;
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}
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//----------------------------------------------------------------------------
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bool cmSourceFile::TryFullPath(const char* tp, const char* ext)
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{
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std::string tryPath = tp;
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if(ext && *ext)
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{
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tryPath += ".";
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tryPath += ext;
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}
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if(cmSystemTools::FileExists(tryPath.c_str()))
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{
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this->FullPath = tryPath;
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return true;
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}
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return false;
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}
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//----------------------------------------------------------------------------
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void cmSourceFile::CheckExtension()
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{
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// Compute the extension.
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std::string realExt =
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cmSystemTools::GetFilenameLastExtension(this->FullPath);
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if(!realExt.empty())
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{
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// Store the extension without the leading '.'.
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this->Extension = realExt.substr(1);
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}
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// Look for object files.
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if(this->Extension == "obj" ||
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this->Extension == "o" ||
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this->Extension == "lo")
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{
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this->SetProperty("EXTERNAL_OBJECT", "1");
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}
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// Try to identify the source file language from the extension.
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if(this->Language.empty())
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{
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this->CheckLanguage(this->Extension);
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}
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}
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//----------------------------------------------------------------------------
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void cmSourceFile::CheckLanguage(std::string const& ext)
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{
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// Try to identify the source file language from the extension.
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cmMakefile* mf = this->Location.GetMakefile();
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cmGlobalGenerator* gg = mf->GetLocalGenerator()->GetGlobalGenerator();
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if(const char* l = gg->GetLanguageFromExtension(ext.c_str()))
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{
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this->Language = l;
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}
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}
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//----------------------------------------------------------------------------
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bool cmSourceFile::Matches(cmSourceFileLocation const& loc)
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{
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return this->Location.Matches(loc);
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}
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//----------------------------------------------------------------------------
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void cmSourceFile::SetProperty(const char* prop, const char* value)
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{
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if (!prop)
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{
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return;
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}
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this->Properties.SetProperty(prop, value, cmProperty::SOURCE_FILE);
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}
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//----------------------------------------------------------------------------
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void cmSourceFile::AppendProperty(const char* prop, const char* value)
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{
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if (!prop)
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{
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return;
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}
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this->Properties.AppendProperty(prop, value, cmProperty::SOURCE_FILE);
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}
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//----------------------------------------------------------------------------
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const char* cmSourceFile::GetPropertyForUser(const char *prop)
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{
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// This method is a consequence of design history and backwards
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// compatibility. GetProperty is (and should be) a const method.
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// Computed properties should not be stored back in the property map
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// but instead reference information already known. If they need to
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// cache information in a mutable ivar to provide the return string
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// safely then so be it.
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//
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// The LOCATION property is particularly problematic. The CMake
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// language has very loose restrictions on the names that will match
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// a given source file (for historical reasons). Implementing
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// lookups correctly with such loose naming requires the
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// cmSourceFileLocation class to commit to a particular full path to
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// the source file as late as possible. If the users requests the
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// LOCATION property we must commit now.
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if(strcmp(prop, "LOCATION") == 0)
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{
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// Commit to a location.
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this->GetFullPath();
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}
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// Perform the normal property lookup.
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return this->GetProperty(prop);
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}
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//----------------------------------------------------------------------------
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const char* cmSourceFile::GetProperty(const char* prop) const
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{
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// Check for computed properties.
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if(strcmp(prop, "LOCATION") == 0)
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{
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if(this->FullPath.empty())
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{
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return 0;
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}
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else
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{
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return this->FullPath.c_str();
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}
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}
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bool chain = false;
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const char *retVal =
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this->Properties.GetPropertyValue(prop, cmProperty::SOURCE_FILE, chain);
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if (chain)
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{
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cmMakefile* mf = this->Location.GetMakefile();
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return mf->GetProperty(prop,cmProperty::SOURCE_FILE);
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}
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return retVal;
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}
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//----------------------------------------------------------------------------
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bool cmSourceFile::GetPropertyAsBool(const char* prop) const
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{
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return cmSystemTools::IsOn(this->GetProperty(prop));
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}
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//----------------------------------------------------------------------------
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cmCustomCommand* cmSourceFile::GetCustomCommand()
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{
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return this->CustomCommand;
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}
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//----------------------------------------------------------------------------
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cmCustomCommand const* cmSourceFile::GetCustomCommand() const
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{
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return this->CustomCommand;
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}
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//----------------------------------------------------------------------------
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void cmSourceFile::SetCustomCommand(cmCustomCommand* cc)
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{
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cmCustomCommand* old = this->CustomCommand;
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this->CustomCommand = cc;
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delete old;
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}
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//----------------------------------------------------------------------------
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void cmSourceFile::DefineProperties(cmake *cm)
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{
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// define properties
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cm->DefineProperty
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("ABSTRACT", cmProperty::SOURCE_FILE,
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"Is this source file an abstract class.",
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"A property on a source file that indicates if the source file "
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"represents a class that is abstract. This only makes sense for "
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"languages that have a notion of an abstract class and it is "
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"only used by some tools that wrap classes into other languages.");
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cm->DefineProperty
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("COMPILE_FLAGS", cmProperty::SOURCE_FILE,
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"Additional flags to be added when compiling this source file.",
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"These flags will be added to the list of compile flags when "
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"this source file builds. Use COMPILE_DEFINITIONS to pass additional "
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"preprocessor definitions.");
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cm->DefineProperty
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("COMPILE_DEFINITIONS", cmProperty::SOURCE_FILE,
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"Preprocessor definitions for compiling a source file.",
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"The COMPILE_DEFINITIONS property may be set to a "
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"semicolon-separated list of preprocessor "
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"definitions using the syntax VAR or VAR=value. Function-style "
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"definitions are not supported. CMake will automatically escape "
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"the value correctly for the native build system (note that CMake "
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"language syntax may require escapes to specify some values). "
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"This property may be set on a per-configuration basis using the name "
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"COMPILE_DEFINITIONS_<CONFIG> where <CONFIG> is an upper-case name "
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"(ex. \"COMPILE_DEFINITIONS_DEBUG\").\n"
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"CMake will automatically drop some definitions that "
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"are not supported by the native build tool. "
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"The VS6 IDE does not support definition values with spaces "
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"(but NMake does). Xcode does not support per-configuration "
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"definitions on source files.\n"
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"Dislaimer: Most native build tools have poor support for escaping "
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"certain values. CMake has work-arounds for many cases but some "
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"values may just not be possible to pass correctly. If a value "
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"does not seem to be escaped correctly, do not attempt to "
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"work-around the problem by adding escape sequences to the value. "
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"Your work-around may break in a future version of CMake that "
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"has improved escape support. Instead consider defining the macro "
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"in a (configured) header file. Then report the limitation.");
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cm->DefineProperty
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("COMPILE_DEFINITIONS_<CONFIG>", cmProperty::SOURCE_FILE,
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"Per-configuration preprocessor definitions on a source file.",
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"This is the configuration-specific version of "
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"COMPILE_DEFINITIONS. Note that Xcode does not support "
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"per-configuration source file flags so this property will "
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"be ignored by the Xcode generator.");
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cm->DefineProperty
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("EXTERNAL_OBJECT", cmProperty::SOURCE_FILE,
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"If set to true then this is an object file.",
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"If this property is set to true then the source file "
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"is really an object file and should not be compiled. "
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"It will still be linked into the target though.");
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cm->DefineProperty
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("GENERATED", cmProperty::SOURCE_FILE,
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"Is this source file generated as part of the build process.",
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"If a source file is generated by the build process CMake will "
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"handle it differently in temrs of dependency checking etc. "
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"Otherwise having a non-existent source file could create problems.");
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cm->DefineProperty
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("HEADER_FILE_ONLY", cmProperty::SOURCE_FILE,
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"Is this source file only a header file.",
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"A property on a source file that indicates if the source file "
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"is a header file with no associated implementation. This is "
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"set automatically based on the file extension and is used by "
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"CMake to determine is certain dependency information should be "
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"computed.");
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cm->DefineProperty
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("KEEP_EXTENSION", cmProperty::SOURCE_FILE,
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"Make the output file have the same extension as the source file.",
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"If this property is set then the file extension of the output "
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"file will be the same as that of the source file. Normally "
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"the output file extension is computed based on the language "
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"of the source file, for example .cxx will go to a .o extension.");
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cm->DefineProperty
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("LABELS", cmProperty::SOURCE_FILE,
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"Specify a list of text labels associated with a source file.",
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"This property has meaning only when the source file is listed in "
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"a target whose LABELS property is also set. "
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"No other semantics are currently specified.");
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cm->DefineProperty
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("LANGUAGE", cmProperty::SOURCE_FILE,
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"What programming language is the file.",
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"A property that can be set to indicate what programming language "
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"the source file is. If it is not set the language is determined "
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"based on the file extension. Typical values are CXX C etc.");
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cm->DefineProperty
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("LOCATION", cmProperty::SOURCE_FILE,
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"The full path to a source file.",
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"A read only property on a SOURCE FILE that contains the full path "
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"to the source file.");
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cm->DefineProperty
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("MACOSX_PACKAGE_LOCATION", cmProperty::SOURCE_FILE,
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"Place a source file inside a Mac OS X bundle or framework.",
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"Executable targets with the MACOSX_BUNDLE property set are built "
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"as Mac OS X application bundles on Apple platforms. "
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"Shared library targets with the FRAMEWORK property set are built "
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"as Mac OS X frameworks on Apple platforms. "
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"Source files listed in the target with this property set will "
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"be copied to a directory inside the bundle or framework content "
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"folder specified by the property value. "
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"For bundles the content folder is \"<name>.app/Contents\". "
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"For frameworks the content folder is "
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"\"<name>.framework/Versions/<version>\". "
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"See the PUBLIC_HEADER, PRIVATE_HEADER, and RESOURCE target "
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"properties for specifying files meant for Headers, PrivateHeadres, "
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"or Resources directories.");
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cm->DefineProperty
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("OBJECT_DEPENDS", cmProperty::SOURCE_FILE,
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"Additional files on which a compiled object file depends.",
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"Specifies a semicolon-separated list of full-paths to files on which "
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"any object files compiled from this source file depend. "
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"An object file will be recompiled if any of the named files is newer "
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"than it.\n"
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"This property need not be used to specify the dependency of a "
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"source file on a generated header file that it includes. "
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"Although the property was originally introduced for this purpose, it "
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"is no longer necessary. "
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"If the generated header file is created by a custom command in the "
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"same target as the source file, the automatic dependency scanning "
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"process will recognize the dependency. "
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"If the generated header file is created by another target, an "
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"inter-target dependency should be created with the add_dependencies "
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"command (if one does not already exist due to linking relationships).");
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cm->DefineProperty
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("OBJECT_OUTPUTS", cmProperty::SOURCE_FILE,
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"Additional outputs for a Makefile rule.",
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"Additional outputs created by compilation of this source file. "
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"If any of these outputs is missing the object will be recompiled. "
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"This is supported only on Makefile generators and will be ignored "
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"on other generators.");
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cm->DefineProperty
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("SYMBOLIC", cmProperty::SOURCE_FILE,
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"Is this just a name for a rule.",
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"If SYMBOLIC (boolean) is set to true the build system will be "
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"informed that the source file is not actually created on disk but "
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"instead used as a symbolic name for a build rule.");
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cm->DefineProperty
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("WRAP_EXCLUDE", cmProperty::SOURCE_FILE,
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"Exclude this source file from any code wrapping techniques.",
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"Some packages can wrap source files into alternate languages "
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"to provide additional functionality. For example, C++ code "
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"can be wrapped into Java or Python etc using SWIG etc. "
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"If WRAP_EXCLUDE is set to true (1 etc) that indicates then "
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"this source file should not be wrapped.");
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}
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