543 lines
16 KiB
C++
543 lines
16 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 "cmFindLibraryCommand.h"
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#include <cmsys/Directory.hxx>
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cmFindLibraryCommand::cmFindLibraryCommand()
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{
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this->EnvironmentPath = "LIB";
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this->NamesPerDirAllowed = true;
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}
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// cmFindLibraryCommand
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bool cmFindLibraryCommand
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::InitialPass(std::vector<std::string> const& argsIn, cmExecutionStatus &)
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{
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this->VariableDocumentation = "Path to a library.";
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this->CMakePathName = "LIBRARY";
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if(!this->ParseArguments(argsIn))
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{
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return false;
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}
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if(this->AlreadyInCache)
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{
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// If the user specifies the entry on the command line without a
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// type we should add the type and docstring but keep the original
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// value.
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if(this->AlreadyInCacheWithoutMetaInfo)
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{
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this->Makefile->AddCacheDefinition(this->VariableName, "",
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this->VariableDocumentation.c_str(),
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cmState::FILEPATH);
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}
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return true;
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}
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if(const char* abi_name =
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this->Makefile->GetDefinition("CMAKE_INTERNAL_PLATFORM_ABI"))
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{
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std::string abi = abi_name;
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if(abi.find("ELF N32") != abi.npos)
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{
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// Convert lib to lib32.
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this->AddArchitecturePaths("32");
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}
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}
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if(this->Makefile->GetState()
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->GetGlobalPropertyAsBool("FIND_LIBRARY_USE_LIB64_PATHS"))
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{
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// add special 64 bit paths if this is a 64 bit compile.
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if(this->Makefile->PlatformIs64Bit())
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{
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this->AddArchitecturePaths("64");
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}
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}
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std::string library = this->FindLibrary();
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if(library != "")
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{
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// Save the value in the cache
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this->Makefile->AddCacheDefinition(this->VariableName,
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library.c_str(),
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this->VariableDocumentation.c_str(),
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cmState::FILEPATH);
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return true;
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}
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std::string notfound = this->VariableName + "-NOTFOUND";
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this->Makefile->AddCacheDefinition(this->VariableName,
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notfound.c_str(),
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this->VariableDocumentation.c_str(),
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cmState::FILEPATH);
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return true;
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}
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//----------------------------------------------------------------------------
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void cmFindLibraryCommand::AddArchitecturePaths(const char* suffix)
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{
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std::vector<std::string> original;
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original.swap(this->SearchPaths);
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for(std::vector<std::string>::const_iterator i = original.begin();
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i != original.end(); ++i)
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{
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this->AddArchitecturePath(*i, 0, suffix);
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}
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}
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//----------------------------------------------------------------------------
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void cmFindLibraryCommand::AddArchitecturePath(
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std::string const& dir, std::string::size_type start_pos,
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const char* suffix, bool fresh)
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{
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std::string::size_type pos = dir.find("lib/", start_pos);
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if(pos != std::string::npos)
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{
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std::string cur_dir = dir.substr(0,pos+3);
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// Follow "lib<suffix>".
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std::string next_dir = cur_dir + suffix;
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if(cmSystemTools::FileIsDirectory(next_dir))
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{
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next_dir += dir.substr(pos+3);
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std::string::size_type next_pos = pos+3+strlen(suffix)+1;
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this->AddArchitecturePath(next_dir, next_pos, suffix);
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}
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// Follow "lib".
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if(cmSystemTools::FileIsDirectory(cur_dir))
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{
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this->AddArchitecturePath(dir, pos+3+1, suffix, false);
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}
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}
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if(fresh)
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{
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// Check for <dir><suffix>/.
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std::string cur_dir = dir + suffix + "/";
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if(cmSystemTools::FileIsDirectory(cur_dir))
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{
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this->SearchPaths.push_back(cur_dir);
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}
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// Now add the original unchanged path
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if(cmSystemTools::FileIsDirectory(dir))
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{
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this->SearchPaths.push_back(dir);
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}
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}
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}
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//----------------------------------------------------------------------------
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std::string cmFindLibraryCommand::FindLibrary()
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{
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std::string library;
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if(this->SearchFrameworkFirst || this->SearchFrameworkOnly)
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{
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library = this->FindFrameworkLibrary();
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}
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if(library.empty() && !this->SearchFrameworkOnly)
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{
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library = this->FindNormalLibrary();
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}
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if(library.empty() && this->SearchFrameworkLast)
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{
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library = this->FindFrameworkLibrary();
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}
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return library;
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}
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//----------------------------------------------------------------------------
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struct cmFindLibraryHelper
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{
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cmFindLibraryHelper(cmMakefile* mf);
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// Context information.
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cmMakefile* Makefile;
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cmGlobalGenerator* GG;
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// List of valid prefixes and suffixes.
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std::vector<std::string> Prefixes;
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std::vector<std::string> Suffixes;
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std::string PrefixRegexStr;
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std::string SuffixRegexStr;
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// Keep track of the best library file found so far.
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typedef std::vector<std::string>::size_type size_type;
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std::string BestPath;
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// Support for OpenBSD shared library naming: lib<name>.so.<major>.<minor>
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bool OpenBSD;
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// Current names under consideration.
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struct Name
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{
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bool TryRaw;
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std::string Raw;
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cmsys::RegularExpression Regex;
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Name(): TryRaw(false) {}
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};
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std::vector<Name> Names;
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// Current full path under consideration.
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std::string TestPath;
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void RegexFromLiteral(std::string& out, std::string const& in);
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void RegexFromList(std::string& out, std::vector<std::string> const& in);
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size_type GetPrefixIndex(std::string const& prefix)
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{
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return std::find(this->Prefixes.begin(), this->Prefixes.end(),
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prefix) - this->Prefixes.begin();
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}
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size_type GetSuffixIndex(std::string const& suffix)
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{
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return std::find(this->Suffixes.begin(), this->Suffixes.end(),
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suffix) - this->Suffixes.begin();
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}
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bool HasValidSuffix(std::string const& name);
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void AddName(std::string const& name);
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bool CheckDirectory(std::string const& path);
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bool CheckDirectoryForName(std::string const& path, Name& name);
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};
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//----------------------------------------------------------------------------
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cmFindLibraryHelper::cmFindLibraryHelper(cmMakefile* mf):
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Makefile(mf)
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{
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this->GG = this->Makefile->GetGlobalGenerator();
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// Collect the list of library name prefixes/suffixes to try.
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const char* prefixes_list =
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this->Makefile->GetRequiredDefinition("CMAKE_FIND_LIBRARY_PREFIXES");
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const char* suffixes_list =
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this->Makefile->GetRequiredDefinition("CMAKE_FIND_LIBRARY_SUFFIXES");
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cmSystemTools::ExpandListArgument(prefixes_list, this->Prefixes, true);
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cmSystemTools::ExpandListArgument(suffixes_list, this->Suffixes, true);
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this->RegexFromList(this->PrefixRegexStr, this->Prefixes);
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this->RegexFromList(this->SuffixRegexStr, this->Suffixes);
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// Check whether to use OpenBSD-style library version comparisons.
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this->OpenBSD =
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this->Makefile->GetState()
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->GetGlobalPropertyAsBool("FIND_LIBRARY_USE_OPENBSD_VERSIONING");
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}
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//----------------------------------------------------------------------------
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void cmFindLibraryHelper::RegexFromLiteral(std::string& out,
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std::string const& in)
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{
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for(std::string::const_iterator ci = in.begin(); ci != in.end(); ++ci)
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{
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char ch = *ci;
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if(ch == '[' || ch == ']' || ch == '(' || ch == ')' || ch == '\\' ||
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ch == '.' || ch == '*' || ch == '+' || ch == '?' || ch == '-' ||
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ch == '^' || ch == '$')
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{
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out += "\\";
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}
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#if defined(_WIN32) || defined(__APPLE__)
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out += tolower(ch);
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#else
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out += ch;
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#endif
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}
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}
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//----------------------------------------------------------------------------
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void cmFindLibraryHelper::RegexFromList(std::string& out,
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std::vector<std::string> const& in)
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{
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// Surround the list in parens so the '|' does not apply to anything
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// else and the result can be checked after matching.
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out += "(";
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const char* sep = "";
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for(std::vector<std::string>::const_iterator si = in.begin();
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si != in.end(); ++si)
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{
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// Separate from previous item.
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out += sep;
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sep = "|";
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// Append this item.
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this->RegexFromLiteral(out, *si);
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}
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out += ")";
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}
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//----------------------------------------------------------------------------
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bool cmFindLibraryHelper::HasValidSuffix(std::string const& name)
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{
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for(std::vector<std::string>::const_iterator si = this->Suffixes.begin();
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si != this->Suffixes.end(); ++si)
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{
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std::string suffix = *si;
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if(name.length() <= suffix.length())
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{
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continue;
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}
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// Check if the given name ends in a valid library suffix.
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if(name.substr(name.size()-suffix.length()) == suffix)
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{
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return true;
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}
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// Check if a valid library suffix is somewhere in the name,
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// this may happen e.g. for versioned shared libraries: libfoo.so.2
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suffix += ".";
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if(name.find(suffix) != name.npos)
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{
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return true;
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}
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}
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return false;
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}
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//----------------------------------------------------------------------------
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void cmFindLibraryHelper::AddName(std::string const& name)
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{
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Name entry;
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// Consider checking the raw name too.
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entry.TryRaw = this->HasValidSuffix(name);
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entry.Raw = name;
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// Build a regular expression to match library names.
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std::string regex = "^";
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regex += this->PrefixRegexStr;
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this->RegexFromLiteral(regex, name);
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regex += this->SuffixRegexStr;
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if(this->OpenBSD)
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{
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regex += "(\\.[0-9]+\\.[0-9]+)?";
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}
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regex += "$";
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entry.Regex.compile(regex.c_str());
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this->Names.push_back(entry);
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}
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//----------------------------------------------------------------------------
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bool cmFindLibraryHelper::CheckDirectory(std::string const& path)
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{
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for(std::vector<Name>::iterator i = this->Names.begin();
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i != this->Names.end(); ++i)
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{
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if(this->CheckDirectoryForName(path, *i))
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{
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return true;
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}
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}
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return false;
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}
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//----------------------------------------------------------------------------
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bool cmFindLibraryHelper::CheckDirectoryForName(std::string const& path,
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Name& name)
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{
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// If the original library name provided by the user matches one of
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// the suffixes, try it first. This allows users to search
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// specifically for a static library on some platforms (on MS tools
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// one cannot tell just from the library name whether it is a static
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// library or an import library).
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if(name.TryRaw)
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{
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this->TestPath = path;
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this->TestPath += name.Raw;
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if(cmSystemTools::FileExists(this->TestPath.c_str(), true))
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{
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this->BestPath =
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cmSystemTools::CollapseFullPath(this->TestPath);
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cmSystemTools::ConvertToUnixSlashes(this->BestPath);
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return true;
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}
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}
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// No library file has yet been found.
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size_type bestPrefix = this->Prefixes.size();
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size_type bestSuffix = this->Suffixes.size();
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unsigned int bestMajor = 0;
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unsigned int bestMinor = 0;
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// Search for a file matching the library name regex.
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std::string dir = path;
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cmSystemTools::ConvertToUnixSlashes(dir);
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std::set<std::string> const& files = this->GG->GetDirectoryContent(dir);
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for(std::set<std::string>::const_iterator fi = files.begin();
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fi != files.end(); ++fi)
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{
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std::string const& origName = *fi;
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#if defined(_WIN32) || defined(__APPLE__)
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std::string testName = cmSystemTools::LowerCase(origName);
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#else
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std::string const& testName = origName;
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#endif
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if(name.Regex.find(testName))
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{
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this->TestPath = path;
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this->TestPath += origName;
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if(!cmSystemTools::FileIsDirectory(this->TestPath))
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{
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// This is a matching file. Check if it is better than the
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// best name found so far. Earlier prefixes are preferred,
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// followed by earlier suffixes. For OpenBSD, shared library
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// version extensions are compared.
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size_type prefix = this->GetPrefixIndex(name.Regex.match(1));
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size_type suffix = this->GetSuffixIndex(name.Regex.match(2));
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unsigned int major = 0;
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unsigned int minor = 0;
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if(this->OpenBSD)
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{
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sscanf(name.Regex.match(3).c_str(), ".%u.%u", &major, &minor);
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}
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if(this->BestPath.empty() || prefix < bestPrefix ||
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(prefix == bestPrefix && suffix < bestSuffix) ||
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(prefix == bestPrefix && suffix == bestSuffix &&
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(major > bestMajor ||
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(major == bestMajor && minor > bestMinor))))
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{
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this->BestPath = this->TestPath;
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bestPrefix = prefix;
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bestSuffix = suffix;
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bestMajor = major;
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bestMinor = minor;
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}
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}
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}
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}
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// Use the best candidate found in this directory, if any.
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return !this->BestPath.empty();
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}
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//----------------------------------------------------------------------------
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std::string cmFindLibraryCommand::FindNormalLibrary()
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{
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if(this->NamesPerDir)
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{
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return this->FindNormalLibraryNamesPerDir();
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}
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else
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{
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return this->FindNormalLibraryDirsPerName();
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}
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}
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//----------------------------------------------------------------------------
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std::string cmFindLibraryCommand::FindNormalLibraryNamesPerDir()
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{
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// Search for all names in each directory.
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cmFindLibraryHelper helper(this->Makefile);
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for(std::vector<std::string>::const_iterator ni = this->Names.begin();
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ni != this->Names.end() ; ++ni)
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{
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helper.AddName(*ni);
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}
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// Search every directory.
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for(std::vector<std::string>::const_iterator
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p = this->SearchPaths.begin(); p != this->SearchPaths.end(); ++p)
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{
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if(helper.CheckDirectory(*p))
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{
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return helper.BestPath;
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}
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}
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// Couldn't find the library.
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return "";
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}
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//----------------------------------------------------------------------------
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std::string cmFindLibraryCommand::FindNormalLibraryDirsPerName()
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{
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// Search the entire path for each name.
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cmFindLibraryHelper helper(this->Makefile);
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for(std::vector<std::string>::const_iterator ni = this->Names.begin();
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ni != this->Names.end() ; ++ni)
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{
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// Switch to searching for this name.
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std::string const& name = *ni;
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helper.AddName(name);
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// Search every directory.
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for(std::vector<std::string>::const_iterator
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p = this->SearchPaths.begin();
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p != this->SearchPaths.end(); ++p)
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{
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if(helper.CheckDirectory(*p))
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{
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return helper.BestPath;
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}
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}
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}
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// Couldn't find the library.
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return "";
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}
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//----------------------------------------------------------------------------
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std::string cmFindLibraryCommand::FindFrameworkLibrary()
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{
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if(this->NamesPerDir)
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{
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return this->FindFrameworkLibraryNamesPerDir();
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}
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else
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{
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return this->FindFrameworkLibraryDirsPerName();
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}
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}
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//----------------------------------------------------------------------------
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std::string cmFindLibraryCommand::FindFrameworkLibraryNamesPerDir()
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{
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std::string fwPath;
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// Search for all names in each search path.
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for(std::vector<std::string>::const_iterator di = this->SearchPaths.begin();
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di != this->SearchPaths.end(); ++di)
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{
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for(std::vector<std::string>::const_iterator ni = this->Names.begin();
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ni != this->Names.end() ; ++ni)
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{
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fwPath = *di;
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fwPath += *ni;
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fwPath += ".framework";
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if(cmSystemTools::FileIsDirectory(fwPath))
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{
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return cmSystemTools::CollapseFullPath(fwPath);
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}
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}
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}
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// No framework found.
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return "";
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}
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//----------------------------------------------------------------------------
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std::string cmFindLibraryCommand::FindFrameworkLibraryDirsPerName()
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{
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std::string fwPath;
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// Search for each name in all search paths.
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for(std::vector<std::string>::const_iterator ni = this->Names.begin();
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ni != this->Names.end() ; ++ni)
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{
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for(std::vector<std::string>::const_iterator
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di = this->SearchPaths.begin();
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di != this->SearchPaths.end(); ++di)
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{
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fwPath = *di;
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fwPath += *ni;
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fwPath += ".framework";
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if(cmSystemTools::FileIsDirectory(fwPath))
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{
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return cmSystemTools::CollapseFullPath(fwPath);
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}
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}
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}
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// No framework found.
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return "";
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}
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