711 lines
22 KiB
C++
711 lines
22 KiB
C++
#include "cmOrderLinkDirectories.h"
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#include "cmSystemTools.h"
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#include "cmsys/RegularExpression.hxx"
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#include <ctype.h>
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//#define CM_ORDER_LINK_DIRECTORIES_DEBUG
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//-------------------------------------------------------------------
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cmOrderLinkDirectories::cmOrderLinkDirectories()
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{
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this->StartLinkType = LinkUnknown;
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this->LinkTypeEnabled = false;
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this->Debug = false;
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}
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//-------------------------------------------------------------------
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void
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cmOrderLinkDirectories
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::SetLinkTypeInformation(LinkType start_link_type,
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const char* static_link_type_flag,
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const char* shared_link_type_flag)
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{
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// We can support link type switching only if all needed flags are
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// known.
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this->StartLinkType = start_link_type;
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if(static_link_type_flag && *static_link_type_flag &&
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shared_link_type_flag && *shared_link_type_flag)
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{
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this->LinkTypeEnabled = true;
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this->StaticLinkTypeFlag = static_link_type_flag;
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this->SharedLinkTypeFlag = shared_link_type_flag;
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}
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else
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{
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this->LinkTypeEnabled = false;
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this->StaticLinkTypeFlag = "";
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this->SharedLinkTypeFlag = "";
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}
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}
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//-------------------------------------------------------------------
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void cmOrderLinkDirectories::SetCurrentLinkType(LinkType lt)
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{
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if(this->CurrentLinkType != lt)
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{
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this->CurrentLinkType = lt;
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if(this->LinkTypeEnabled)
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{
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switch(this->CurrentLinkType)
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{
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case LinkStatic:
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this->LinkItems.push_back(this->StaticLinkTypeFlag); break;
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case LinkShared:
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this->LinkItems.push_back(this->SharedLinkTypeFlag); break;
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default: break;
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}
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}
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}
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}
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//-------------------------------------------------------------------
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bool cmOrderLinkDirectories::LibraryInDirectory(const char* desiredLib,
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const char* dir,
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const char* libIn)
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{
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// first look for the library as given
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if(this->LibraryMayConflict(desiredLib, dir, libIn))
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{
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return true;
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}
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// next remove the extension (.a, .so ) and look for the library
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// under a different name as the linker can do either
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if(this->RemoveLibraryExtension.find(libIn))
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{
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cmStdString lib = this->RemoveLibraryExtension.match(1);
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cmStdString ext = this->RemoveLibraryExtension.match(2);
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for(std::vector<cmStdString>::iterator i = this->LinkExtensions.begin();
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i != this->LinkExtensions.end(); ++i)
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{
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if(ext != *i)
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{
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std::string fname = lib;
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lib += *i;
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if(this->LibraryMayConflict(desiredLib, dir, fname.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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}
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return false;
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}
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//-------------------------------------------------------------------
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void cmOrderLinkDirectories::FindLibrariesInSearchPaths()
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{
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for(std::set<cmStdString>::iterator dir = this->LinkPathSet.begin();
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dir != this->LinkPathSet.end(); ++dir)
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{
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for(std::map<cmStdString, Library>::iterator lib
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= this->FullPathLibraries.begin();
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lib != this->FullPathLibraries.end(); ++lib)
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{
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if(lib->second.Path != *dir)
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{
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if(this->LibraryInDirectory(lib->second.FullPath.c_str(),
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dir->c_str(), lib->second.File.c_str()))
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{
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this->LibraryToDirectories[lib->second.FullPath].push_back(*dir);
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}
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}
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}
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}
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}
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//-------------------------------------------------------------------
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void cmOrderLinkDirectories::FindIndividualLibraryOrders()
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{
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for(std::vector<Library>::iterator lib =
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this->MultiDirectoryLibraries.begin();
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lib != this->MultiDirectoryLibraries.end(); ++lib)
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{
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std::vector<cmStdString>& dirs =
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this->LibraryToDirectories[lib->FullPath];
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std::vector<std::pair<cmStdString, std::vector<cmStdString> >
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>::iterator i;
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for(i = this->DirectoryToAfterList.begin();
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i != this->DirectoryToAfterList.end(); ++i)
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{
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if(i->first == lib->Path)
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{
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break;
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}
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}
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if(i == this->DirectoryToAfterList.end())
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{
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std::cerr << "ERROR: should not happen\n";
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}
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else
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{
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for(std::vector<cmStdString>::iterator d = dirs.begin();
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d != dirs.end(); ++d)
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{
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i->second.push_back(*d);
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}
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}
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}
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}
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//-------------------------------------------------------------------
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std::string cmOrderLinkDirectories::NoCaseExpression(const char* str)
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{
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std::string ret;
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const char* s = str;
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while(*s)
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{
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if(*s == '.')
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{
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ret += *s;
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}
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else
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{
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ret += "[";
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ret += tolower(*s);
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ret += toupper(*s);
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ret += "]";
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}
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s++;
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}
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return ret;
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}
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//-------------------------------------------------------------------
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void cmOrderLinkDirectories::CreateRegularExpressions()
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{
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this->SplitFramework.compile("(.*)/(.*)\\.framework$");
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// Compute a regex to match link extensions.
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cmStdString libext = this->CreateExtensionRegex(this->LinkExtensions);
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// Create regex to remove any library extension.
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cmStdString reg("(.*)");
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reg += libext;
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this->RemoveLibraryExtension.compile(reg.c_str());
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// Create a regex to match a library name. Match index 1 will be
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// the prefix if it exists and empty otherwise. Match index 2 will
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// be the library name. Match index 3 will be the library
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// extension.
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reg = "^(";
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for(std::set<cmStdString>::iterator p = this->LinkPrefixes.begin();
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p != this->LinkPrefixes.end(); ++p)
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{
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reg += *p;
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reg += "|";
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}
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reg += ")";
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reg += "([^/]*)";
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// Create a regex to match any library name.
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cmStdString reg_any = reg;
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reg_any += libext;
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#ifdef CM_ORDER_LINK_DIRECTORIES_DEBUG
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fprintf(stderr, "any regex [%s]\n", reg_any.c_str());
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#endif
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this->ExtractAnyLibraryName.compile(reg_any.c_str());
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// Create a regex to match static library names.
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if(!this->StaticLinkExtensions.empty())
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{
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cmStdString reg_static = reg;
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reg_static += this->CreateExtensionRegex(this->StaticLinkExtensions);
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#ifdef CM_ORDER_LINK_DIRECTORIES_DEBUG
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fprintf(stderr, "static regex [%s]\n", reg_static.c_str());
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#endif
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this->ExtractStaticLibraryName.compile(reg_static.c_str());
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}
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// Create a regex to match shared library names.
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if(!this->SharedLinkExtensions.empty())
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{
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cmStdString reg_shared = reg;
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reg_shared += this->CreateExtensionRegex(this->SharedLinkExtensions);
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#ifdef CM_ORDER_LINK_DIRECTORIES_DEBUG
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fprintf(stderr, "shared regex [%s]\n", reg_shared.c_str());
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#endif
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this->ExtractSharedLibraryName.compile(reg_shared.c_str());
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}
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}
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//-------------------------------------------------------------------
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std::string
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cmOrderLinkDirectories::CreateExtensionRegex(
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std::vector<cmStdString> const& exts)
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{
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// Build a list of extension choices.
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cmStdString libext = "(";
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const char* sep = "";
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for(std::vector<cmStdString>::const_iterator i = exts.begin();
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i != exts.end(); ++i)
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{
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// Separate this choice from the previous one.
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libext += sep;
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sep = "|";
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// Store this extension choice with the "." escaped.
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libext += "\\";
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#if defined(_WIN32) && !defined(__CYGWIN__)
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libext += this->NoCaseExpression(i->c_str());
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#else
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libext += *i;
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#endif
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}
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// Finish the list.
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libext += ").*";
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return libext;
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}
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//-------------------------------------------------------------------
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void cmOrderLinkDirectories::PrepareLinkTargets()
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{
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std::vector<cmStdString> originalLinkItems = this->LinkItems;
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this->LinkItems.clear();
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this->CurrentLinkType = this->StartLinkType;
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for(std::vector<cmStdString>::iterator i = originalLinkItems.begin();
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i != originalLinkItems.end(); ++i)
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{
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// Parse out the prefix, base, and suffix components of the
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// library name. If the name matches that of a shared or static
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// library then set the link type accordingly.
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//
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// Search for shared library names first because some platforms
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// have shared libraries with names that match the static library
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// pattern. For example cygwin and msys use the convention
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// libfoo.dll.a for import libraries and libfoo.a for static
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// libraries. On AIX a library with the name libfoo.a can be
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// shared!
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if(this->ExtractSharedLibraryName.find(*i))
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{
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#ifdef CM_ORDER_LINK_DIRECTORIES_DEBUG
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fprintf(stderr, "shared regex matched [%s] [%s] [%s]\n",
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this->ExtractSharedLibraryName.match(1).c_str(),
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this->ExtractSharedLibraryName.match(2).c_str(),
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this->ExtractSharedLibraryName.match(3).c_str());
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#endif
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this->SetCurrentLinkType(LinkShared);
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this->LinkItems.push_back(this->ExtractSharedLibraryName.match(2));
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}
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else if(this->ExtractStaticLibraryName.find(*i))
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{
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#ifdef CM_ORDER_LINK_DIRECTORIES_DEBUG
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fprintf(stderr, "static regex matched [%s] [%s] [%s]\n",
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this->ExtractStaticLibraryName.match(1).c_str(),
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this->ExtractStaticLibraryName.match(2).c_str(),
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this->ExtractStaticLibraryName.match(3).c_str());
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#endif
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this->SetCurrentLinkType(LinkStatic);
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this->LinkItems.push_back(this->ExtractStaticLibraryName.match(2));
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}
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else if(this->ExtractAnyLibraryName.find(*i))
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{
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#ifdef CM_ORDER_LINK_DIRECTORIES_DEBUG
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fprintf(stderr, "any regex matched [%s] [%s] [%s]\n",
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this->ExtractAnyLibraryName.match(1).c_str(),
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this->ExtractAnyLibraryName.match(2).c_str(),
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this->ExtractAnyLibraryName.match(3).c_str());
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#endif
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this->SetCurrentLinkType(this->StartLinkType);
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this->LinkItems.push_back(this->ExtractAnyLibraryName.match(2));
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}
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else
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{
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this->SetCurrentLinkType(this->StartLinkType);
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this->LinkItems.push_back(*i);
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}
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}
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// Restore the original linking type so system runtime libraries are
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// linked properly.
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this->SetCurrentLinkType(this->StartLinkType);
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}
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//-------------------------------------------------------------------
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bool cmOrderLinkDirectories::FindPathNotInDirectoryToAfterList(
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cmStdString& path)
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{
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for(std::vector<std::pair<cmStdString, std::vector<cmStdString> >
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>::iterator i = this->DirectoryToAfterList.begin();
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i != this->DirectoryToAfterList.end(); ++i)
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{
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const cmStdString& p = i->first;
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bool found = false;
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for(std::vector<std::pair<cmStdString, std::vector<cmStdString> >
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>::iterator j = this->DirectoryToAfterList.begin();
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j != this->DirectoryToAfterList.end() && !found; ++j)
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{
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if(j != i)
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{
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found = (std::find(j->second.begin(), j->second.end(), p)
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!= j->second.end());
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}
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}
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if(!found)
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{
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path = p;
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this->DirectoryToAfterList.erase(i);
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return true;
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}
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}
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path = "";
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return false;
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}
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//-------------------------------------------------------------------
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void cmOrderLinkDirectories::OrderPaths(std::vector<cmStdString>&
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orderedPaths)
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{
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cmStdString path;
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// This is a topological sort implementation
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// One at a time find paths that are not in any other paths after list
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// and put them into the orderedPaths vector in that order
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// FindPathNotInDirectoryToAfterList removes the path from the
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// this->DirectoryToAfterList once it is found
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while(this->FindPathNotInDirectoryToAfterList(path))
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{
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orderedPaths.push_back(path);
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}
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// at this point if there are still paths in this->DirectoryToAfterList
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// then there is a cycle and we are stuck
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if(this->DirectoryToAfterList.size())
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{
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for(std::vector<std::pair<cmStdString, std::vector<cmStdString> >
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>::iterator i = this->DirectoryToAfterList.begin();
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i != this->DirectoryToAfterList.end(); ++i)
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{
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this->ImpossibleDirectories.insert(i->first);
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// still put it in the path list in the order we find them
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orderedPaths.push_back(i->first);
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}
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}
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}
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//-------------------------------------------------------------------
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void cmOrderLinkDirectories::SetLinkInformation(
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const char* targetName,
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const std::vector<std::string>& linkLibraries,
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const std::vector<std::string>& linkDirectories,
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const cmTargetManifest& manifest,
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const char* configSubdir
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)
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{
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// Save the target name.
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this->TargetName = targetName;
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// Save the subdirectory used for linking in this configuration.
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this->ConfigSubdir = configSubdir? configSubdir : "";
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// Merge the link directory search path given into our path set.
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std::vector<cmStdString> empty;
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for(std::vector<std::string>::const_iterator p = linkDirectories.begin();
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p != linkDirectories.end(); ++p)
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{
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std::string dir = *p;
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#ifdef _WIN32
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// Avoid case problems for windows paths.
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if(dir.size() > 2 && dir[1] == ':')
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{
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if(dir[0] >= 'A' && dir[0] <= 'Z')
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{
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dir[0] += 'a' - 'A';
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}
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}
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dir = cmSystemTools::GetActualCaseForPath(dir.c_str());
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#endif
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if(this->DirectoryToAfterListEmitted.insert(dir).second)
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{
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std::pair<cmStdString, std::vector<cmStdString> > dp;
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dp.first = dir;
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this->DirectoryToAfterList.push_back(dp);
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this->LinkPathSet.insert(dir);
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}
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}
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// Append the link library list into our raw list.
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for(std::vector<std::string>::const_iterator l = linkLibraries.begin();
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l != linkLibraries.end(); ++l)
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{
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this->RawLinkItems.push_back(*l);
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}
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// Construct a set of files that will exist after building.
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for(cmTargetManifest::const_iterator i = manifest.begin();
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i != manifest.end(); ++i)
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{
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for(cmTargetSet::const_iterator j = i->second.begin();
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j != i->second.end(); ++j)
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{
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this->ManifestFiles.insert(*j);
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}
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}
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}
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//-------------------------------------------------------------------
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bool cmOrderLinkDirectories::DetermineLibraryPathOrder()
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{
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// set up all the regular expressions
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this->CreateRegularExpressions();
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std::vector<cmStdString> finalOrderPaths;
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// find all libs that are full paths
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Library aLib;
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cmStdString dir;
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cmStdString file;
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std::vector<cmStdString> empty;
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// do not add a -F for the system frameworks
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this->EmittedFrameworkPaths.insert("/System/Library/Frameworks");
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for(unsigned int i=0; i < this->RawLinkItems.size(); ++i)
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{
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bool framework = false;
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#ifdef CM_ORDER_LINK_DIRECTORIES_DEBUG
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fprintf(stderr, "Raw link item [%s]\n", this->RawLinkItems[i].c_str());
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#endif
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// if it is a full path to an item then separate it from the path
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// this only works with files and paths
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cmStdString& item = this->RawLinkItems[i];
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if(cmSystemTools::FileIsFullPath(item.c_str()))
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{
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if(cmSystemTools::IsPathToFramework(item.c_str()))
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{
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this->SplitFramework.find(item.c_str());
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cmStdString path = this->SplitFramework.match(1);
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// Add the -F path if we have not yet done so
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if(this->EmittedFrameworkPaths.insert(path).second)
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{
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std::string fpath = "-F";
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fpath += cmSystemTools::ConvertToOutputPath(path.c_str());
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this->LinkItems.push_back(fpath);
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}
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// now add the -framework option
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std::string frame = "-framework ";
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frame += this->SplitFramework.match(2);
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this->LinkItems.push_back(frame);
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framework = true;
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}
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if(cmSystemTools::FileIsDirectory(item.c_str()))
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{
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if(!framework)
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{
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// A full path to a directory was found as a link item
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// warn user
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std::string message =
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"Warning: Ignoring path found in link libraries for target: ";
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message += this->TargetName;
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message += ", path is: ";
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message += this->RawLinkItems[i];
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message +=
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". Expected a library name or a full path to a library name.";
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cmSystemTools::Message(message.c_str());
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continue;
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}
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} // is it a directory
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if(!framework)
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{
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dir = cmSystemTools::GetFilenamePath(this->RawLinkItems[i]);
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file = cmSystemTools::GetFilenameName(this->RawLinkItems[i]);
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#ifdef _WIN32
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// Avoid case problems for windows paths.
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if(dir.size() > 2 && dir[1] == ':')
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{
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if(dir[0] >= 'A' && dir[0] <= 'Z')
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{
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dir[0] += 'a' - 'A';
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}
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}
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dir = cmSystemTools::GetActualCaseForPath(dir.c_str());
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#endif
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if(this->DirectoryToAfterListEmitted.insert(dir).second)
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{
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std::pair<cmStdString, std::vector<cmStdString> > dp;
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dp.first = dir;
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this->DirectoryToAfterList.push_back(dp);
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}
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this->LinkPathSet.insert(dir);
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aLib.FullPath = this->RawLinkItems[i];
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|
aLib.File = file;
|
|
aLib.Path = dir;
|
|
this->FullPathLibraries[aLib.FullPath] = aLib;
|
|
#ifdef CM_ORDER_LINK_DIRECTORIES_DEBUG
|
|
fprintf(stderr, "Storing item [%s]\n", file.c_str());
|
|
#endif
|
|
this->LinkItems.push_back(file);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
this->LinkItems.push_back(this->RawLinkItems[i]);
|
|
}
|
|
}
|
|
this->FindLibrariesInSearchPaths();
|
|
for(std::map<cmStdString, std::vector<cmStdString> >::iterator lib =
|
|
this->LibraryToDirectories.begin();
|
|
lib!= this->LibraryToDirectories.end();
|
|
++lib)
|
|
{
|
|
if(lib->second.size() > 0)
|
|
{
|
|
this->MultiDirectoryLibraries.push_back
|
|
(this->FullPathLibraries[lib->first]);
|
|
}
|
|
else
|
|
{
|
|
this->SingleDirectoryLibraries.push_back
|
|
(this->FullPathLibraries[lib->first]);
|
|
}
|
|
}
|
|
this->FindIndividualLibraryOrders();
|
|
this->SortedSearchPaths.clear();
|
|
if(this->Debug)
|
|
{
|
|
this->PrintMap("this->LibraryToDirectories", this->LibraryToDirectories);
|
|
this->PrintVector("this->DirectoryToAfterList",
|
|
this->DirectoryToAfterList);
|
|
}
|
|
this->OrderPaths(this->SortedSearchPaths);
|
|
// now turn libfoo.a into foo and foo.a into foo
|
|
// This will prepare the link items for -litem
|
|
this->PrepareLinkTargets();
|
|
if(this->ImpossibleDirectories.size())
|
|
{
|
|
cmSystemTools::Message(this->GetWarnings().c_str());
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
std::string cmOrderLinkDirectories::GetWarnings()
|
|
{
|
|
std::string warning =
|
|
"It is impossible to order the linker search path in such a way "
|
|
"that libraries specified as full paths will be picked by the "
|
|
"linker.\nDirectories and libraries involved are:\n";
|
|
|
|
for(std::set<cmStdString>::iterator i = this->ImpossibleDirectories.begin();
|
|
i != this->ImpossibleDirectories.end(); ++i)
|
|
{
|
|
warning += "Directory: ";
|
|
warning += *i;
|
|
warning += " contains:\n";
|
|
std::map<cmStdString, std::vector<cmStdString> >::iterator j;
|
|
for(j = this->LibraryToDirectories.begin();
|
|
j != this->LibraryToDirectories.end(); ++j)
|
|
{
|
|
if(std::find(j->second.begin(), j->second.end(), *i)
|
|
!= j->second.end())
|
|
{
|
|
warning += "Library: ";
|
|
warning += j->first;
|
|
warning += "\n";
|
|
}
|
|
}
|
|
warning += "\n";
|
|
}
|
|
warning += "\n";
|
|
return warning;
|
|
}
|
|
|
|
//-------------------------------------------------------------------
|
|
void
|
|
cmOrderLinkDirectories::PrintMap(const char* name,
|
|
std::map<cmStdString, std::vector<cmStdString> >& m)
|
|
{
|
|
std::cout << name << "\n";
|
|
for(std::map<cmStdString, std::vector<cmStdString> >::iterator i =
|
|
m.begin(); i != m.end();
|
|
++i)
|
|
{
|
|
std::cout << i->first << ": ";
|
|
for(std::vector<cmStdString>::iterator l = i->second.begin();
|
|
l != i->second.end(); ++l)
|
|
{
|
|
std::cout << *l << " ";
|
|
}
|
|
std::cout << "\n";
|
|
}
|
|
}
|
|
//-------------------------------------------------------------------
|
|
void
|
|
cmOrderLinkDirectories::PrintVector(const char* name,
|
|
std::vector<std::pair<cmStdString,
|
|
std::vector<cmStdString> > >& m)
|
|
{
|
|
std::cout << name << "\n";
|
|
for(std::vector<std::pair<cmStdString, std::vector<cmStdString> >
|
|
>::iterator i = m.begin(); i != m.end(); ++i)
|
|
{
|
|
std::cout << i->first << ": ";
|
|
for(std::vector<cmStdString>::iterator l = i->second.begin();
|
|
l != i->second.end(); ++l)
|
|
{
|
|
std::cout << *l << " ";
|
|
}
|
|
std::cout << "\n";
|
|
}
|
|
}
|
|
|
|
void cmOrderLinkDirectories::GetFullPathLibraries(std::vector<cmStdString>&
|
|
libs)
|
|
{
|
|
for(std::map<cmStdString, Library>::iterator i =
|
|
this->FullPathLibraries.begin();
|
|
i != this->FullPathLibraries.end(); ++i)
|
|
{
|
|
libs.push_back(i->first);
|
|
}
|
|
|
|
}
|
|
|
|
//----------------------------------------------------------------------------
|
|
bool cmOrderLinkDirectories::LibraryMayConflict(const char* desiredLib,
|
|
const char* dir,
|
|
const char* fname)
|
|
{
|
|
// We need to check whether the given file may be picked up by the
|
|
// linker. This will occur if it exists as given or may be built
|
|
// using the name given.
|
|
bool found = false;
|
|
std::string path = dir;
|
|
path += "/";
|
|
path += fname;
|
|
if(this->ManifestFiles.find(path) != this->ManifestFiles.end())
|
|
{
|
|
found = true;
|
|
}
|
|
else if(cmSystemTools::FileExists(path.c_str()))
|
|
{
|
|
found = true;
|
|
}
|
|
|
|
// When linking with a multi-configuration build tool the
|
|
// per-configuration subdirectory is added to each link path. Check
|
|
// this subdirectory too.
|
|
if(!found && !this->ConfigSubdir.empty())
|
|
{
|
|
path = dir;
|
|
path += "/";
|
|
path += this->ConfigSubdir;
|
|
path += "/";
|
|
path += fname;
|
|
if(this->ManifestFiles.find(path) != this->ManifestFiles.end())
|
|
{
|
|
found = true;
|
|
}
|
|
else if(cmSystemTools::FileExists(path.c_str()))
|
|
{
|
|
found = true;
|
|
}
|
|
}
|
|
|
|
// A library conflicts if it is found and is not a symlink back to
|
|
// the desired library.
|
|
if(found)
|
|
{
|
|
return !cmSystemTools::SameFile(desiredLib, path.c_str());
|
|
}
|
|
return false;
|
|
}
|