| //===--- InitHeaderSearch.cpp - Initialize header search paths ----------*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the InitHeaderSearch class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/Frontend/InitHeaderSearch.h" |
| #include "clang/Lex/HeaderSearch.h" |
| #include "clang/Basic/FileManager.h" |
| #include "clang/Basic/LangOptions.h" |
| #include "llvm/ADT/SmallString.h" |
| #include "llvm/ADT/SmallPtrSet.h" |
| #include "llvm/System/Path.h" |
| #include "llvm/Config/config.h" |
| #include <cstdio> |
| #include <vector> |
| using namespace clang; |
| |
| void InitHeaderSearch::AddPath(const std::string &Path, IncludeDirGroup Group, |
| bool isCXXAware, bool isUserSupplied, |
| bool isFramework, bool IgnoreSysRoot) { |
| assert(!Path.empty() && "can't handle empty path here"); |
| FileManager &FM = Headers.getFileMgr(); |
| |
| // Compute the actual path, taking into consideration -isysroot. |
| llvm::SmallString<256> MappedPath; |
| |
| // Handle isysroot. |
| if (Group == System && !IgnoreSysRoot) { |
| // FIXME: Portability. This should be a sys::Path interface, this doesn't |
| // handle things like C:\ right, nor win32 \\network\device\blah. |
| if (isysroot.size() != 1 || isysroot[0] != '/') // Add isysroot if present. |
| MappedPath.append(isysroot.begin(), isysroot.end()); |
| } |
| |
| MappedPath.append(Path.begin(), Path.end()); |
| |
| // Compute the DirectoryLookup type. |
| SrcMgr::CharacteristicKind Type; |
| if (Group == Quoted || Group == Angled) |
| Type = SrcMgr::C_User; |
| else if (isCXXAware) |
| Type = SrcMgr::C_System; |
| else |
| Type = SrcMgr::C_ExternCSystem; |
| |
| |
| // If the directory exists, add it. |
| if (const DirectoryEntry *DE = FM.getDirectory(&MappedPath[0], |
| &MappedPath[0]+ |
| MappedPath.size())) { |
| IncludeGroup[Group].push_back(DirectoryLookup(DE, Type, isUserSupplied, |
| isFramework)); |
| return; |
| } |
| |
| // Check to see if this is an apple-style headermap (which are not allowed to |
| // be frameworks). |
| if (!isFramework) { |
| if (const FileEntry *FE = FM.getFile(&MappedPath[0], |
| &MappedPath[0]+MappedPath.size())) { |
| if (const HeaderMap *HM = Headers.CreateHeaderMap(FE)) { |
| // It is a headermap, add it to the search path. |
| IncludeGroup[Group].push_back(DirectoryLookup(HM, Type,isUserSupplied)); |
| return; |
| } |
| } |
| } |
| |
| if (Verbose) |
| llvm::errs() << "ignoring nonexistent directory \"" |
| << MappedPath.str() << "\"\n"; |
| } |
| |
| |
| void InitHeaderSearch::AddEnvVarPaths(const char *Name) { |
| const char* at = getenv(Name); |
| if (!at || *at == 0) // Empty string should not add '.' path. |
| return; |
| |
| const char* delim = strchr(at, llvm::sys::PathSeparator); |
| while (delim != 0) { |
| if (delim-at == 0) |
| AddPath(".", Angled, false, true, false); |
| else |
| AddPath(std::string(at, std::string::size_type(delim-at)), Angled, false, |
| true, false); |
| at = delim + 1; |
| delim = strchr(at, llvm::sys::PathSeparator); |
| } |
| if (*at == 0) |
| AddPath(".", Angled, false, true, false); |
| else |
| AddPath(at, Angled, false, true, false); |
| } |
| |
| |
| void InitHeaderSearch::AddDefaultSystemIncludePaths(const LangOptions &Lang) { |
| // FIXME: temporary hack: hard-coded paths. |
| // FIXME: get these from the target? |
| |
| #ifdef LLVM_ON_WIN32 |
| if (Lang.CPlusPlus) { |
| // Mingw32 GCC version 4 |
| AddPath("c:/mingw/lib/gcc/mingw32/4.3.0/include/c++", |
| System, true, false, false); |
| AddPath("c:/mingw/lib/gcc/mingw32/4.3.0/include/c++/mingw32", |
| System, true, false, false); |
| AddPath("c:/mingw/lib/gcc/mingw32/4.3.0/include/c++/backward", |
| System, true, false, false); |
| } |
| |
| // Mingw32 GCC version 4 |
| AddPath("C:/mingw/include", System, false, false, false); |
| #else |
| |
| if (Lang.CPlusPlus) { |
| AddPath("/usr/include/c++/4.2.1", System, true, false, false); |
| AddPath("/usr/include/c++/4.2.1/i686-apple-darwin10", System, true, false, |
| false); |
| AddPath("/usr/include/c++/4.2.1/backward", System, true, false, false); |
| |
| AddPath("/usr/include/c++/4.0.0", System, true, false, false); |
| AddPath("/usr/include/c++/4.0.0/i686-apple-darwin8", System, true, false, |
| false); |
| AddPath("/usr/include/c++/4.0.0/backward", System, true, false, false); |
| |
| // Ubuntu 7.10 - Gutsy Gibbon |
| AddPath("/usr/include/c++/4.1.3", System, true, false, false); |
| AddPath("/usr/include/c++/4.1.3/i486-linux-gnu", System, true, false, |
| false); |
| AddPath("/usr/include/c++/4.1.3/backward", System, true, false, false); |
| |
| // Ubuntu 9.04 |
| AddPath("/usr/include/c++/4.3.3", System, true, false, false); |
| AddPath("/usr/include/c++/4.3.3/x86_64-linux-gnu/", System, true, false, |
| false); |
| AddPath("/usr/include/c++/4.3.3/backward", System, true, false, false); |
| |
| // Fedora 8 |
| AddPath("/usr/include/c++/4.1.2", System, true, false, false); |
| AddPath("/usr/include/c++/4.1.2/i386-redhat-linux", System, true, false, |
| false); |
| AddPath("/usr/include/c++/4.1.2/backward", System, true, false, false); |
| |
| // Fedora 9 |
| AddPath("/usr/include/c++/4.3.0", System, true, false, false); |
| AddPath("/usr/include/c++/4.3.0/i386-redhat-linux", System, true, false, |
| false); |
| AddPath("/usr/include/c++/4.3.0/backward", System, true, false, false); |
| |
| // Fedora 10 |
| AddPath("/usr/include/c++/4.3.2", System, true, false, false); |
| AddPath("/usr/include/c++/4.3.2/i386-redhat-linux", System, true, false, |
| false); |
| AddPath("/usr/include/c++/4.3.2/backward", System, true, false, false); |
| |
| // openSUSE 11.1 |
| AddPath("/usr/include/c++/4.3", System, true, false, false); |
| AddPath("/usr/include/c++/4.3/i586-suse-linux", System, true, false, |
| false); |
| AddPath("/usr/include/c++/4.3/x86_64-suse-linux", System, true, false, |
| false); |
| AddPath("/usr/include/c++/4.3/backward", System, true, false, false); |
| |
| // openSUSE 11.2 |
| AddPath("/usr/include/c++/4.4", System, true, false, false); |
| AddPath("/usr/include/c++/4.4/i586-suse-linux", System, true, false, |
| false); |
| AddPath("/usr/include/c++/4.4/x86_64-suse-linux", System, true, false, |
| false); |
| AddPath("/usr/include/c++/4.4/backward", System, true, false, false); |
| |
| // Arch Linux 2008-06-24 |
| AddPath("/usr/include/c++/4.3.1", System, true, false, false); |
| AddPath("/usr/include/c++/4.3.1/i686-pc-linux-gnu", System, true, false, |
| false); |
| AddPath("/usr/include/c++/4.3.1/backward", System, true, false, false); |
| AddPath("/usr/include/c++/4.3.1/x86_64-unknown-linux-gnu", System, true, |
| false, false); |
| |
| // Gentoo x86 2009.0 stable |
| AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.3.2/include/g++-v4", System, |
| true, false, false); |
| AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.3.2/include/g++-v4/" |
| "i686-pc-linux-gnu", System, true, false, false); |
| AddPath(" /usr/lib/gcc/i686-pc-linux-gnu/4.3.2/include/g++-v4/backward", |
| System, true, false, false); |
| |
| // Gentoo x86 2008.0 stable |
| AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4", System, |
| true, false, false); |
| AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4/" |
| "i686-pc-linux-gnu", System, true, false, false); |
| AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4/backward", |
| System, true, false, false); |
| |
| // Ubuntu 8.10 |
| AddPath("/usr/include/c++/4.3/i486-linux-gnu", System, true, false, false); |
| |
| // Gentoo amd64 stable |
| AddPath("/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include/g++-v4", System, |
| true, false, false); |
| AddPath("/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include/g++-v4/" |
| "i686-pc-linux-gnu", System, true, false, false); |
| AddPath("/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include/g++-v4/backward", |
| System, true, false, false); |
| |
| // DragonFly |
| AddPath("/usr/include/c++/4.1", System, true, false, false); |
| |
| // FreeBSD |
| AddPath("/usr/include/c++/4.2", System, true, false, false); |
| |
| // AuroraUX |
| AddPath("/opt/gcc4/include/c++/4.2.4", System, true, false, false); |
| AddPath("/opt/gcc4/include/c++/4.2.4/i386-pc-solaris2.11", System, true, false, false); |
| } |
| |
| AddPath("/usr/local/include", System, false, false, false); |
| |
| AddPath("/usr/include", System, false, false, false); |
| AddPath("/System/Library/Frameworks", System, true, false, true); |
| AddPath("/Library/Frameworks", System, true, false, true); |
| #endif |
| } |
| |
| void InitHeaderSearch::AddDefaultEnvVarPaths(const LangOptions &Lang) { |
| AddEnvVarPaths("CPATH"); |
| if (Lang.CPlusPlus && Lang.ObjC1) |
| AddEnvVarPaths("OBJCPLUS_INCLUDE_PATH"); |
| else if (Lang.CPlusPlus) |
| AddEnvVarPaths("CPLUS_INCLUDE_PATH"); |
| else if (Lang.ObjC1) |
| AddEnvVarPaths("OBJC_INCLUDE_PATH"); |
| else |
| AddEnvVarPaths("C_INCLUDE_PATH"); |
| } |
| |
| |
| /// RemoveDuplicates - If there are duplicate directory entries in the specified |
| /// search list, remove the later (dead) ones. |
| static void RemoveDuplicates(std::vector<DirectoryLookup> &SearchList, |
| bool Verbose) { |
| llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenDirs; |
| llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenFrameworkDirs; |
| llvm::SmallPtrSet<const HeaderMap *, 8> SeenHeaderMaps; |
| for (unsigned i = 0; i != SearchList.size(); ++i) { |
| unsigned DirToRemove = i; |
| |
| const DirectoryLookup &CurEntry = SearchList[i]; |
| |
| if (CurEntry.isNormalDir()) { |
| // If this isn't the first time we've seen this dir, remove it. |
| if (SeenDirs.insert(CurEntry.getDir())) |
| continue; |
| } else if (CurEntry.isFramework()) { |
| // If this isn't the first time we've seen this framework dir, remove it. |
| if (SeenFrameworkDirs.insert(CurEntry.getFrameworkDir())) |
| continue; |
| } else { |
| assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?"); |
| // If this isn't the first time we've seen this headermap, remove it. |
| if (SeenHeaderMaps.insert(CurEntry.getHeaderMap())) |
| continue; |
| } |
| |
| // If we have a normal #include dir/framework/headermap that is shadowed |
| // later in the chain by a system include location, we actually want to |
| // ignore the user's request and drop the user dir... keeping the system |
| // dir. This is weird, but required to emulate GCC's search path correctly. |
| // |
| // Since dupes of system dirs are rare, just rescan to find the original |
| // that we're nuking instead of using a DenseMap. |
| if (CurEntry.getDirCharacteristic() != SrcMgr::C_User) { |
| // Find the dir that this is the same of. |
| unsigned FirstDir; |
| for (FirstDir = 0; ; ++FirstDir) { |
| assert(FirstDir != i && "Didn't find dupe?"); |
| |
| const DirectoryLookup &SearchEntry = SearchList[FirstDir]; |
| |
| // If these are different lookup types, then they can't be the dupe. |
| if (SearchEntry.getLookupType() != CurEntry.getLookupType()) |
| continue; |
| |
| bool isSame; |
| if (CurEntry.isNormalDir()) |
| isSame = SearchEntry.getDir() == CurEntry.getDir(); |
| else if (CurEntry.isFramework()) |
| isSame = SearchEntry.getFrameworkDir() == CurEntry.getFrameworkDir(); |
| else { |
| assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?"); |
| isSame = SearchEntry.getHeaderMap() == CurEntry.getHeaderMap(); |
| } |
| |
| if (isSame) |
| break; |
| } |
| |
| // If the first dir in the search path is a non-system dir, zap it |
| // instead of the system one. |
| if (SearchList[FirstDir].getDirCharacteristic() == SrcMgr::C_User) |
| DirToRemove = FirstDir; |
| } |
| |
| if (Verbose) { |
| fprintf(stderr, "ignoring duplicate directory \"%s\"\n", |
| CurEntry.getName()); |
| if (DirToRemove != i) |
| fprintf(stderr, " as it is a non-system directory that duplicates" |
| " a system directory\n"); |
| } |
| |
| // This is reached if the current entry is a duplicate. Remove the |
| // DirToRemove (usually the current dir). |
| SearchList.erase(SearchList.begin()+DirToRemove); |
| --i; |
| } |
| } |
| |
| |
| void InitHeaderSearch::Realize() { |
| // Concatenate ANGLE+SYSTEM+AFTER chains together into SearchList. |
| std::vector<DirectoryLookup> SearchList; |
| SearchList = IncludeGroup[Angled]; |
| SearchList.insert(SearchList.end(), IncludeGroup[System].begin(), |
| IncludeGroup[System].end()); |
| SearchList.insert(SearchList.end(), IncludeGroup[After].begin(), |
| IncludeGroup[After].end()); |
| RemoveDuplicates(SearchList, Verbose); |
| RemoveDuplicates(IncludeGroup[Quoted], Verbose); |
| |
| // Prepend QUOTED list on the search list. |
| SearchList.insert(SearchList.begin(), IncludeGroup[Quoted].begin(), |
| IncludeGroup[Quoted].end()); |
| |
| |
| bool DontSearchCurDir = false; // TODO: set to true if -I- is set? |
| Headers.SetSearchPaths(SearchList, IncludeGroup[Quoted].size(), |
| DontSearchCurDir); |
| |
| // If verbose, print the list of directories that will be searched. |
| if (Verbose) { |
| fprintf(stderr, "#include \"...\" search starts here:\n"); |
| unsigned QuotedIdx = IncludeGroup[Quoted].size(); |
| for (unsigned i = 0, e = SearchList.size(); i != e; ++i) { |
| if (i == QuotedIdx) |
| fprintf(stderr, "#include <...> search starts here:\n"); |
| const char *Name = SearchList[i].getName(); |
| const char *Suffix; |
| if (SearchList[i].isNormalDir()) |
| Suffix = ""; |
| else if (SearchList[i].isFramework()) |
| Suffix = " (framework directory)"; |
| else { |
| assert(SearchList[i].isHeaderMap() && "Unknown DirectoryLookup"); |
| Suffix = " (headermap)"; |
| } |
| fprintf(stderr, " %s%s\n", Name, Suffix); |
| } |
| fprintf(stderr, "End of search list.\n"); |
| } |
| } |
| |
