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Diffstat (limited to 'Source/cmFindLibraryCommand.cxx')
| -rw-r--r-- | Source/cmFindLibraryCommand.cxx | 544 |
1 files changed, 544 insertions, 0 deletions
diff --git a/Source/cmFindLibraryCommand.cxx b/Source/cmFindLibraryCommand.cxx new file mode 100644 index 0000000..fe5e45f --- /dev/null +++ b/Source/cmFindLibraryCommand.cxx @@ -0,0 +1,544 @@ +/*============================================================================ + CMake - Cross Platform Makefile Generator + Copyright 2000-2009 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 "cmFindLibraryCommand.h" +#include "cmCacheManager.h" +#include <cmsys/Directory.hxx> +#include <cmsys/stl/algorithm> + +cmFindLibraryCommand::cmFindLibraryCommand() +{ + this->EnvironmentPath = "LIB"; + this->NamesPerDirAllowed = true; +} + +// cmFindLibraryCommand +bool cmFindLibraryCommand +::InitialPass(std::vector<std::string> const& argsIn, cmExecutionStatus &) +{ + this->VariableDocumentation = "Path to a library."; + this->CMakePathName = "LIBRARY"; + if(!this->ParseArguments(argsIn)) + { + return false; + } + if(this->AlreadyInCache) + { + // If the user specifies the entry on the command line without a + // type we should add the type and docstring but keep the original + // value. + if(this->AlreadyInCacheWithoutMetaInfo) + { + this->Makefile->AddCacheDefinition(this->VariableName, "", + this->VariableDocumentation.c_str(), + cmCacheManager::FILEPATH); + } + return true; + } + + if(const char* abi_name = + this->Makefile->GetDefinition("CMAKE_INTERNAL_PLATFORM_ABI")) + { + std::string abi = abi_name; + if(abi.find("ELF N32") != abi.npos) + { + // Convert lib to lib32. + this->AddArchitecturePaths("32"); + } + } + + if(this->Makefile->GetCMakeInstance() + ->GetPropertyAsBool("FIND_LIBRARY_USE_LIB64_PATHS")) + { + // add special 64 bit paths if this is a 64 bit compile. + if(this->Makefile->PlatformIs64Bit()) + { + this->AddArchitecturePaths("64"); + } + } + + std::string library = this->FindLibrary(); + if(library != "") + { + // Save the value in the cache + this->Makefile->AddCacheDefinition(this->VariableName, + library.c_str(), + this->VariableDocumentation.c_str(), + cmCacheManager::FILEPATH); + return true; + } + std::string notfound = this->VariableName + "-NOTFOUND"; + this->Makefile->AddCacheDefinition(this->VariableName, + notfound.c_str(), + this->VariableDocumentation.c_str(), + cmCacheManager::FILEPATH); + return true; +} + +//---------------------------------------------------------------------------- +void cmFindLibraryCommand::AddArchitecturePaths(const char* suffix) +{ + std::vector<std::string> original; + original.swap(this->SearchPaths); + for(std::vector<std::string>::iterator i = original.begin(); + i != original.end(); ++i) + { + this->AddArchitecturePath(*i, 0, suffix); + } +} + +//---------------------------------------------------------------------------- +void cmFindLibraryCommand::AddArchitecturePath( + std::string const& dir, std::string::size_type start_pos, + const char* suffix, bool fresh) +{ + std::string::size_type pos = dir.find("lib/", start_pos); + if(pos != std::string::npos) + { + std::string cur_dir = dir.substr(0,pos+3); + + // Follow "lib<suffix>". + std::string next_dir = cur_dir + suffix; + if(cmSystemTools::FileIsDirectory(next_dir.c_str())) + { + next_dir += dir.substr(pos+3); + std::string::size_type next_pos = pos+3+strlen(suffix)+1; + this->AddArchitecturePath(next_dir, next_pos, suffix); + } + + // Follow "lib". + if(cmSystemTools::FileIsDirectory(cur_dir.c_str())) + { + this->AddArchitecturePath(dir, pos+3+1, suffix, false); + } + } + if(fresh) + { + // Check for <dir><suffix>/. + std::string cur_dir = dir + suffix + "/"; + if(cmSystemTools::FileIsDirectory(cur_dir.c_str())) + { + this->SearchPaths.push_back(cur_dir); + } + + // Now add the original unchanged path + if(cmSystemTools::FileIsDirectory(dir.c_str())) + { + this->SearchPaths.push_back(dir); + } + } +} + +//---------------------------------------------------------------------------- +std::string cmFindLibraryCommand::FindLibrary() +{ + std::string library; + if(this->SearchFrameworkFirst || this->SearchFrameworkOnly) + { + library = this->FindFrameworkLibrary(); + } + if(library.empty() && !this->SearchFrameworkOnly) + { + library = this->FindNormalLibrary(); + } + if(library.empty() && this->SearchFrameworkLast) + { + library = this->FindFrameworkLibrary(); + } + return library; +} + +//---------------------------------------------------------------------------- +struct cmFindLibraryHelper +{ + cmFindLibraryHelper(cmMakefile* mf); + + // Context information. + cmMakefile* Makefile; + cmGlobalGenerator* GG; + + // List of valid prefixes and suffixes. + std::vector<std::string> Prefixes; + std::vector<std::string> Suffixes; + std::string PrefixRegexStr; + std::string SuffixRegexStr; + + // Keep track of the best library file found so far. + typedef std::vector<std::string>::size_type size_type; + std::string BestPath; + + // Support for OpenBSD shared library naming: lib<name>.so.<major>.<minor> + bool OpenBSD; + + // Current names under consideration. + struct Name + { + bool TryRaw; + std::string Raw; + cmsys::RegularExpression Regex; + Name(): TryRaw(false) {} + }; + std::vector<Name> Names; + + // Current full path under consideration. + std::string TestPath; + + void RegexFromLiteral(std::string& out, std::string const& in); + void RegexFromList(std::string& out, std::vector<std::string> const& in); + size_type GetPrefixIndex(std::string const& prefix) + { + return cmsys_stl::find(this->Prefixes.begin(), this->Prefixes.end(), + prefix) - this->Prefixes.begin(); + } + size_type GetSuffixIndex(std::string const& suffix) + { + return cmsys_stl::find(this->Suffixes.begin(), this->Suffixes.end(), + suffix) - this->Suffixes.begin(); + } + bool HasValidSuffix(std::string const& name); + void AddName(std::string const& name); + bool CheckDirectory(std::string const& path); + bool CheckDirectoryForName(std::string const& path, Name& name); +}; + +//---------------------------------------------------------------------------- +cmFindLibraryHelper::cmFindLibraryHelper(cmMakefile* mf): + Makefile(mf) +{ + this->GG = this->Makefile->GetLocalGenerator()->GetGlobalGenerator(); + + // Collect the list of library name prefixes/suffixes to try. + const char* prefixes_list = + this->Makefile->GetRequiredDefinition("CMAKE_FIND_LIBRARY_PREFIXES"); + const char* suffixes_list = + this->Makefile->GetRequiredDefinition("CMAKE_FIND_LIBRARY_SUFFIXES"); + cmSystemTools::ExpandListArgument(prefixes_list, this->Prefixes, true); + cmSystemTools::ExpandListArgument(suffixes_list, this->Suffixes, true); + this->RegexFromList(this->PrefixRegexStr, this->Prefixes); + this->RegexFromList(this->SuffixRegexStr, this->Suffixes); + + // Check whether to use OpenBSD-style library version comparisons. + this->OpenBSD = + this->Makefile->GetCMakeInstance() + ->GetPropertyAsBool("FIND_LIBRARY_USE_OPENBSD_VERSIONING"); +} + +//---------------------------------------------------------------------------- +void cmFindLibraryHelper::RegexFromLiteral(std::string& out, + std::string const& in) +{ + for(std::string::const_iterator ci = in.begin(); ci != in.end(); ++ci) + { + char ch = *ci; + if(ch == '[' || ch == ']' || ch == '(' || ch == ')' || ch == '\\' || + ch == '.' || ch == '*' || ch == '+' || ch == '?' || ch == '-' || + ch == '^' || ch == '$') + { + out += "\\"; + } +#if defined(_WIN32) || defined(__APPLE__) + out += tolower(ch); +#else + out += ch; +#endif + } +} + +//---------------------------------------------------------------------------- +void cmFindLibraryHelper::RegexFromList(std::string& out, + std::vector<std::string> const& in) +{ + // Surround the list in parens so the '|' does not apply to anything + // else and the result can be checked after matching. + out += "("; + const char* sep = ""; + for(std::vector<std::string>::const_iterator si = in.begin(); + si != in.end(); ++si) + { + // Separate from previous item. + out += sep; + sep = "|"; + + // Append this item. + this->RegexFromLiteral(out, *si); + } + out += ")"; +} + +//---------------------------------------------------------------------------- +bool cmFindLibraryHelper::HasValidSuffix(std::string const& name) +{ + for(std::vector<std::string>::const_iterator si = this->Suffixes.begin(); + si != this->Suffixes.end(); ++si) + { + std::string suffix = *si; + if(name.length() <= suffix.length()) + { + continue; + } + // Check if the given name ends in a valid library suffix. + if(name.substr(name.size()-suffix.length()) == suffix) + { + return true; + } + // Check if a valid library suffix is somewhere in the name, + // this may happen e.g. for versioned shared libraries: libfoo.so.2 + suffix += "."; + if(name.find(suffix) != name.npos) + { + return true; + } + } + return false; +} + +//---------------------------------------------------------------------------- +void cmFindLibraryHelper::AddName(std::string const& name) +{ + Name entry; + + // Consider checking the raw name too. + entry.TryRaw = this->HasValidSuffix(name); + entry.Raw = name; + + // Build a regular expression to match library names. + std::string regex = "^"; + regex += this->PrefixRegexStr; + this->RegexFromLiteral(regex, name); + regex += this->SuffixRegexStr; + if(this->OpenBSD) + { + regex += "(\\.[0-9]+\\.[0-9]+)?"; + } + regex += "$"; + entry.Regex.compile(regex.c_str()); + this->Names.push_back(entry); +} + +//---------------------------------------------------------------------------- +bool cmFindLibraryHelper::CheckDirectory(std::string const& path) +{ + for(std::vector<Name>::iterator i = this->Names.begin(); + i != this->Names.end(); ++i) + { + if(this->CheckDirectoryForName(path, *i)) + { + return true; + } + } + return false; +} + +//---------------------------------------------------------------------------- +bool cmFindLibraryHelper::CheckDirectoryForName(std::string const& path, + Name& name) +{ + // If the original library name provided by the user matches one of + // the suffixes, try it first. This allows users to search + // specifically for a static library on some platforms (on MS tools + // one cannot tell just from the library name whether it is a static + // library or an import library). + if(name.TryRaw) + { + this->TestPath = path; + this->TestPath += name.Raw; + if(cmSystemTools::FileExists(this->TestPath.c_str(), true)) + { + this->BestPath = + cmSystemTools::CollapseFullPath(this->TestPath.c_str()); + cmSystemTools::ConvertToUnixSlashes(this->BestPath); + return true; + } + } + + // No library file has yet been found. + size_type bestPrefix = this->Prefixes.size(); + size_type bestSuffix = this->Suffixes.size(); + unsigned int bestMajor = 0; + unsigned int bestMinor = 0; + + // Search for a file matching the library name regex. + std::string dir = path; + cmSystemTools::ConvertToUnixSlashes(dir); + std::set<std::string> const& files = this->GG->GetDirectoryContent(dir); + for(std::set<std::string>::const_iterator fi = files.begin(); + fi != files.end(); ++fi) + { + std::string const& origName = *fi; +#if defined(_WIN32) || defined(__APPLE__) + std::string testName = cmSystemTools::LowerCase(origName); +#else + std::string const& testName = origName; +#endif + if(name.Regex.find(testName)) + { + this->TestPath = path; + this->TestPath += origName; + if(!cmSystemTools::FileIsDirectory(this->TestPath.c_str())) + { + // This is a matching file. Check if it is better than the + // best name found so far. Earlier prefixes are preferred, + // followed by earlier suffixes. For OpenBSD, shared library + // version extensions are compared. + size_type prefix = this->GetPrefixIndex(name.Regex.match(1)); + size_type suffix = this->GetSuffixIndex(name.Regex.match(2)); + unsigned int major = 0; + unsigned int minor = 0; + if(this->OpenBSD) + { + sscanf(name.Regex.match(3).c_str(), ".%u.%u", &major, &minor); + } + if(this->BestPath.empty() || prefix < bestPrefix || + (prefix == bestPrefix && suffix < bestSuffix) || + (prefix == bestPrefix && suffix == bestSuffix && + (major > bestMajor || + (major == bestMajor && minor > bestMinor)))) + { + this->BestPath = this->TestPath; + bestPrefix = prefix; + bestSuffix = suffix; + bestMajor = major; + bestMinor = minor; + } + } + } + } + + // Use the best candidate found in this directory, if any. + return !this->BestPath.empty(); +} + +//---------------------------------------------------------------------------- +std::string cmFindLibraryCommand::FindNormalLibrary() +{ + if(this->NamesPerDir) + { + return this->FindNormalLibraryNamesPerDir(); + } + else + { + return this->FindNormalLibraryDirsPerName(); + } +} + +//---------------------------------------------------------------------------- +std::string cmFindLibraryCommand::FindNormalLibraryNamesPerDir() +{ + // Search for all names in each directory. + cmFindLibraryHelper helper(this->Makefile); + for(std::vector<std::string>::const_iterator ni = this->Names.begin(); + ni != this->Names.end() ; ++ni) + { + helper.AddName(*ni); + } + // Search every directory. + for(std::vector<std::string>::const_iterator + p = this->SearchPaths.begin(); p != this->SearchPaths.end(); ++p) + { + if(helper.CheckDirectory(*p)) + { + return helper.BestPath; + } + } + // Couldn't find the library. + return ""; +} + +//---------------------------------------------------------------------------- +std::string cmFindLibraryCommand::FindNormalLibraryDirsPerName() +{ + // Search the entire path for each name. + cmFindLibraryHelper helper(this->Makefile); + for(std::vector<std::string>::const_iterator ni = this->Names.begin(); + ni != this->Names.end() ; ++ni) + { + // Switch to searching for this name. + std::string const& name = *ni; + helper.AddName(name); + + // Search every directory. + for(std::vector<std::string>::const_iterator + p = this->SearchPaths.begin(); + p != this->SearchPaths.end(); ++p) + { + if(helper.CheckDirectory(*p)) + { + return helper.BestPath; + } + } + } + // Couldn't find the library. + return ""; +} + +//---------------------------------------------------------------------------- +std::string cmFindLibraryCommand::FindFrameworkLibrary() +{ + if(this->NamesPerDir) + { + return this->FindFrameworkLibraryNamesPerDir(); + } + else + { + return this->FindFrameworkLibraryDirsPerName(); + } +} + +//---------------------------------------------------------------------------- +std::string cmFindLibraryCommand::FindFrameworkLibraryNamesPerDir() +{ + std::string fwPath; + // Search for all names in each search path. + for(std::vector<std::string>::const_iterator di = this->SearchPaths.begin(); + di != this->SearchPaths.end(); ++di) + { + for(std::vector<std::string>::const_iterator ni = this->Names.begin(); + ni != this->Names.end() ; ++ni) + { + fwPath = *di; + fwPath += *ni; + fwPath += ".framework"; + if(cmSystemTools::FileIsDirectory(fwPath.c_str())) + { + return cmSystemTools::CollapseFullPath(fwPath.c_str()); + } + } + } + + // No framework found. + return ""; +} + +//---------------------------------------------------------------------------- +std::string cmFindLibraryCommand::FindFrameworkLibraryDirsPerName() +{ + std::string fwPath; + // Search for each name in all search paths. + for(std::vector<std::string>::const_iterator ni = this->Names.begin(); + ni != this->Names.end() ; ++ni) + { + for(std::vector<std::string>::const_iterator + di = this->SearchPaths.begin(); + di != this->SearchPaths.end(); ++di) + { + fwPath = *di; + fwPath += *ni; + fwPath += ".framework"; + if(cmSystemTools::FileIsDirectory(fwPath.c_str())) + { + return cmSystemTools::CollapseFullPath(fwPath.c_str()); + } + } + } + + // No framework found. + return ""; +} |