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-rw-r--r--clang/lib/Frontend/InitHeaderSearch.cpp672
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diff --git a/clang/lib/Frontend/InitHeaderSearch.cpp b/clang/lib/Frontend/InitHeaderSearch.cpp
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+//===--- 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/Utils.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/Basic/LangOptions.h"
+#include "clang/Frontend/HeaderSearchOptions.h"
+#include "clang/Lex/HeaderSearch.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/ADT/Twine.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/Path.h"
+
+#include "clang/Config/config.h" // C_INCLUDE_DIRS
+
+using namespace clang;
+using namespace clang::frontend;
+
+namespace {
+
+/// InitHeaderSearch - This class makes it easier to set the search paths of
+/// a HeaderSearch object. InitHeaderSearch stores several search path lists
+/// internally, which can be sent to a HeaderSearch object in one swoop.
+class InitHeaderSearch {
+ std::vector<std::pair<IncludeDirGroup, DirectoryLookup> > IncludePath;
+ typedef std::vector<std::pair<IncludeDirGroup,
+ DirectoryLookup> >::const_iterator path_iterator;
+ HeaderSearch &Headers;
+ bool Verbose;
+ std::string IncludeSysroot;
+ bool IsNotEmptyOrRoot;
+
+public:
+
+ InitHeaderSearch(HeaderSearch &HS, bool verbose, StringRef sysroot)
+ : Headers(HS), Verbose(verbose), IncludeSysroot(sysroot),
+ IsNotEmptyOrRoot(!(sysroot.empty() || sysroot == "/")) {
+ }
+
+ /// AddPath - Add the specified path to the specified group list.
+ void AddPath(const Twine &Path, IncludeDirGroup Group,
+ bool isCXXAware, bool isUserSupplied,
+ bool isFramework, bool IgnoreSysRoot = false);
+
+ /// AddGnuCPlusPlusIncludePaths - Add the necessary paths to support a gnu
+ /// libstdc++.
+ void AddGnuCPlusPlusIncludePaths(StringRef Base,
+ StringRef ArchDir,
+ StringRef Dir32,
+ StringRef Dir64,
+ const llvm::Triple &triple);
+
+ /// AddMinGWCPlusPlusIncludePaths - Add the necessary paths to support a MinGW
+ /// libstdc++.
+ void AddMinGWCPlusPlusIncludePaths(StringRef Base,
+ StringRef Arch,
+ StringRef Version);
+
+ /// AddMinGW64CXXPaths - Add the necessary paths to support
+ /// libstdc++ of x86_64-w64-mingw32 aka mingw-w64.
+ void AddMinGW64CXXPaths(StringRef Base,
+ StringRef Version);
+
+ // AddDefaultCIncludePaths - Add paths that should always be searched.
+ void AddDefaultCIncludePaths(const llvm::Triple &triple,
+ const HeaderSearchOptions &HSOpts);
+
+ // AddDefaultCPlusPlusIncludePaths - Add paths that should be searched when
+ // compiling c++.
+ void AddDefaultCPlusPlusIncludePaths(const llvm::Triple &triple,
+ const HeaderSearchOptions &HSOpts);
+
+ /// AddDefaultSystemIncludePaths - Adds the default system include paths so
+ /// that e.g. stdio.h is found.
+ void AddDefaultIncludePaths(const LangOptions &Lang,
+ const llvm::Triple &triple,
+ const HeaderSearchOptions &HSOpts);
+
+ /// Realize - Merges all search path lists into one list and send it to
+ /// HeaderSearch.
+ void Realize(const LangOptions &Lang);
+};
+
+} // end anonymous namespace.
+
+void InitHeaderSearch::AddPath(const Twine &Path,
+ IncludeDirGroup Group, bool isCXXAware,
+ bool isUserSupplied, bool isFramework,
+ bool IgnoreSysRoot) {
+ assert(!Path.isTriviallyEmpty() && "can't handle empty path here");
+ FileManager &FM = Headers.getFileMgr();
+
+ // Compute the actual path, taking into consideration -isysroot.
+ SmallString<256> MappedPathStorage;
+ StringRef MappedPathStr = Path.toStringRef(MappedPathStorage);
+
+ // Handle isysroot.
+ if ((Group == System || Group == CXXSystem) && !IgnoreSysRoot &&
+#if defined(_WIN32)
+ !MappedPathStr.empty() &&
+ llvm::sys::path::is_separator(MappedPathStr[0]) &&
+#else
+ llvm::sys::path::is_absolute(MappedPathStr) &&
+#endif
+ IsNotEmptyOrRoot) {
+ MappedPathStorage.clear();
+ MappedPathStr =
+ (IncludeSysroot + Path).toStringRef(MappedPathStorage);
+ }
+
+ // Compute the DirectoryLookup type.
+ SrcMgr::CharacteristicKind Type;
+ if (Group == Quoted || Group == Angled || Group == IndexHeaderMap)
+ 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(MappedPathStr)) {
+ IncludePath.push_back(std::make_pair(Group, 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(MappedPathStr)) {
+ if (const HeaderMap *HM = Headers.CreateHeaderMap(FE)) {
+ // It is a headermap, add it to the search path.
+ IncludePath.push_back(std::make_pair(Group, DirectoryLookup(HM, Type,
+ isUserSupplied, Group == IndexHeaderMap)));
+ return;
+ }
+ }
+ }
+
+ if (Verbose)
+ llvm::errs() << "ignoring nonexistent directory \""
+ << MappedPathStr << "\"\n";
+}
+
+void InitHeaderSearch::AddGnuCPlusPlusIncludePaths(StringRef Base,
+ StringRef ArchDir,
+ StringRef Dir32,
+ StringRef Dir64,
+ const llvm::Triple &triple) {
+ // Add the base dir
+ AddPath(Base, CXXSystem, true, false, false);
+
+ // Add the multilib dirs
+ llvm::Triple::ArchType arch = triple.getArch();
+ bool is64bit = arch == llvm::Triple::ppc64 || arch == llvm::Triple::x86_64;
+ if (is64bit)
+ AddPath(Base + "/" + ArchDir + "/" + Dir64, CXXSystem, true, false, false);
+ else
+ AddPath(Base + "/" + ArchDir + "/" + Dir32, CXXSystem, true, false, false);
+
+ // Add the backward dir
+ AddPath(Base + "/backward", CXXSystem, true, false, false);
+}
+
+void InitHeaderSearch::AddMinGWCPlusPlusIncludePaths(StringRef Base,
+ StringRef Arch,
+ StringRef Version) {
+ AddPath(Base + "/" + Arch + "/" + Version + "/include/c++",
+ CXXSystem, true, false, false);
+ AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/" + Arch,
+ CXXSystem, true, false, false);
+ AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/backward",
+ CXXSystem, true, false, false);
+}
+
+void InitHeaderSearch::AddMinGW64CXXPaths(StringRef Base,
+ StringRef Version) {
+ // Assumes Base is HeaderSearchOpts' ResourceDir
+ AddPath(Base + "/../../../include/c++/" + Version,
+ CXXSystem, true, false, false);
+ AddPath(Base + "/../../../include/c++/" + Version + "/x86_64-w64-mingw32",
+ CXXSystem, true, false, false);
+ AddPath(Base + "/../../../include/c++/" + Version + "/i686-w64-mingw32",
+ CXXSystem, true, false, false);
+ AddPath(Base + "/../../../include/c++/" + Version + "/backward",
+ CXXSystem, true, false, false);
+}
+
+void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple,
+ const HeaderSearchOptions &HSOpts) {
+ llvm::Triple::OSType os = triple.getOS();
+
+ if (HSOpts.UseStandardSystemIncludes) {
+ switch (os) {
+ case llvm::Triple::FreeBSD:
+ case llvm::Triple::NetBSD:
+ break;
+ default:
+ // FIXME: temporary hack: hard-coded paths.
+ AddPath("/usr/local/include", System, true, false, false);
+ break;
+ }
+ }
+
+ // Builtin includes use #include_next directives and should be positioned
+ // just prior C include dirs.
+ if (HSOpts.UseBuiltinIncludes) {
+ // Ignore the sys root, we *always* look for clang headers relative to
+ // supplied path.
+ llvm::sys::Path P(HSOpts.ResourceDir);
+ P.appendComponent("include");
+ AddPath(P.str(), System, false, false, false, /*IgnoreSysRoot=*/ true);
+ }
+
+ // All remaining additions are for system include directories, early exit if
+ // we aren't using them.
+ if (!HSOpts.UseStandardSystemIncludes)
+ return;
+
+ // Add dirs specified via 'configure --with-c-include-dirs'.
+ StringRef CIncludeDirs(C_INCLUDE_DIRS);
+ if (CIncludeDirs != "") {
+ SmallVector<StringRef, 5> dirs;
+ CIncludeDirs.split(dirs, ":");
+ for (SmallVectorImpl<StringRef>::iterator i = dirs.begin();
+ i != dirs.end();
+ ++i)
+ AddPath(*i, System, false, false, false);
+ return;
+ }
+
+ switch (os) {
+ case llvm::Triple::Linux:
+ case llvm::Triple::Win32:
+ llvm_unreachable("Include management is handled in the driver.");
+
+ case llvm::Triple::Haiku:
+ AddPath("/boot/common/include", System, true, false, false);
+ AddPath("/boot/develop/headers/os", System, true, false, false);
+ AddPath("/boot/develop/headers/os/app", System, true, false, false);
+ AddPath("/boot/develop/headers/os/arch", System, true, false, false);
+ AddPath("/boot/develop/headers/os/device", System, true, false, false);
+ AddPath("/boot/develop/headers/os/drivers", System, true, false, false);
+ AddPath("/boot/develop/headers/os/game", System, true, false, false);
+ AddPath("/boot/develop/headers/os/interface", System, true, false, false);
+ AddPath("/boot/develop/headers/os/kernel", System, true, false, false);
+ AddPath("/boot/develop/headers/os/locale", System, true, false, false);
+ AddPath("/boot/develop/headers/os/mail", System, true, false, false);
+ AddPath("/boot/develop/headers/os/media", System, true, false, false);
+ AddPath("/boot/develop/headers/os/midi", System, true, false, false);
+ AddPath("/boot/develop/headers/os/midi2", System, true, false, false);
+ AddPath("/boot/develop/headers/os/net", System, true, false, false);
+ AddPath("/boot/develop/headers/os/storage", System, true, false, false);
+ AddPath("/boot/develop/headers/os/support", System, true, false, false);
+ AddPath("/boot/develop/headers/os/translation",
+ System, true, false, false);
+ AddPath("/boot/develop/headers/os/add-ons/graphics",
+ System, true, false, false);
+ AddPath("/boot/develop/headers/os/add-ons/input_server",
+ System, true, false, false);
+ AddPath("/boot/develop/headers/os/add-ons/screen_saver",
+ System, true, false, false);
+ AddPath("/boot/develop/headers/os/add-ons/tracker",
+ System, true, false, false);
+ AddPath("/boot/develop/headers/os/be_apps/Deskbar",
+ System, true, false, false);
+ AddPath("/boot/develop/headers/os/be_apps/NetPositive",
+ System, true, false, false);
+ AddPath("/boot/develop/headers/os/be_apps/Tracker",
+ System, true, false, false);
+ AddPath("/boot/develop/headers/cpp", System, true, false, false);
+ AddPath("/boot/develop/headers/cpp/i586-pc-haiku",
+ System, true, false, false);
+ AddPath("/boot/develop/headers/3rdparty", System, true, false, false);
+ AddPath("/boot/develop/headers/bsd", System, true, false, false);
+ AddPath("/boot/develop/headers/glibc", System, true, false, false);
+ AddPath("/boot/develop/headers/posix", System, true, false, false);
+ AddPath("/boot/develop/headers", System, true, false, false);
+ break;
+ case llvm::Triple::RTEMS:
+ break;
+ case llvm::Triple::Cygwin:
+ AddPath("/usr/include/w32api", System, true, false, false);
+ break;
+ case llvm::Triple::MinGW32: {
+ // mingw-w64 crt include paths
+ llvm::sys::Path P(HSOpts.ResourceDir);
+ P.appendComponent("../../../i686-w64-mingw32/include"); // <sysroot>/i686-w64-mingw32/include
+ AddPath(P.str(), System, true, false, false);
+ P = llvm::sys::Path(HSOpts.ResourceDir);
+ P.appendComponent("../../../x86_64-w64-mingw32/include"); // <sysroot>/x86_64-w64-mingw32/include
+ AddPath(P.str(), System, true, false, false);
+ // mingw.org crt include paths
+ P = llvm::sys::Path(HSOpts.ResourceDir);
+ P.appendComponent("../../../include"); // <sysroot>/include
+ AddPath(P.str(), System, true, false, false);
+ AddPath("/mingw/include", System, true, false, false);
+ AddPath("c:/mingw/include", System, true, false, false);
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ if ( os != llvm::Triple::RTEMS )
+ AddPath("/usr/include", System, false, false, false);
+}
+
+void InitHeaderSearch::
+AddDefaultCPlusPlusIncludePaths(const llvm::Triple &triple, const HeaderSearchOptions &HSOpts) {
+ llvm::Triple::OSType os = triple.getOS();
+ // FIXME: temporary hack: hard-coded paths.
+
+ if (triple.isOSDarwin()) {
+ switch (triple.getArch()) {
+ default: break;
+
+ case llvm::Triple::ppc:
+ case llvm::Triple::ppc64:
+ AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1",
+ "powerpc-apple-darwin10", "", "ppc64",
+ triple);
+ AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.0.0",
+ "powerpc-apple-darwin10", "", "ppc64",
+ triple);
+ break;
+
+ case llvm::Triple::x86:
+ case llvm::Triple::x86_64:
+ AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1",
+ "i686-apple-darwin10", "", "x86_64", triple);
+ AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.0.0",
+ "i686-apple-darwin8", "", "", triple);
+ break;
+
+ case llvm::Triple::arm:
+ case llvm::Triple::thumb:
+ AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1",
+ "arm-apple-darwin10", "v7", "", triple);
+ AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1",
+ "arm-apple-darwin10", "v6", "", triple);
+ break;
+ }
+ return;
+ }
+
+ switch (os) {
+ case llvm::Triple::Linux:
+ case llvm::Triple::Win32:
+ llvm_unreachable("Include management is handled in the driver.");
+
+ case llvm::Triple::Cygwin:
+ // Cygwin-1.7
+ AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.5.3");
+ AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.4");
+ // g++-4 / Cygwin-1.5
+ AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.2");
+ break;
+ case llvm::Triple::MinGW32:
+ // mingw-w64 C++ include paths (i686-w64-mingw32 and x86_64-w64-mingw32)
+ AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.5.0");
+ AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.5.1");
+ AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.5.2");
+ AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.5.3");
+ AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.5.4");
+ AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.6.0");
+ AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.6.1");
+ AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.6.2");
+ AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.6.3");
+ AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.7.0");
+ // mingw.org C++ include paths
+ AddMinGWCPlusPlusIncludePaths("/mingw/lib/gcc", "mingw32", "4.5.2"); //MSYS
+ AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.6.2");
+ AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.6.1");
+ AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.5.2");
+ AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.5.0");
+ AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.4.0");
+ AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.3.0");
+ break;
+ case llvm::Triple::DragonFly:
+ AddPath("/usr/include/c++/4.1", CXXSystem, true, false, false);
+ break;
+ case llvm::Triple::FreeBSD:
+ // FreeBSD 8.0
+ // FreeBSD 7.3
+ AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2", "", "", "", triple);
+ break;
+ case llvm::Triple::NetBSD:
+ AddGnuCPlusPlusIncludePaths("/usr/include/g++", "", "", "", triple);
+ break;
+ case llvm::Triple::OpenBSD: {
+ std::string t = triple.getTriple();
+ if (t.substr(0, 6) == "x86_64")
+ t.replace(0, 6, "amd64");
+ AddGnuCPlusPlusIncludePaths("/usr/include/g++",
+ t, "", "", triple);
+ break;
+ }
+ case llvm::Triple::Minix:
+ AddGnuCPlusPlusIncludePaths("/usr/gnu/include/c++/4.4.3",
+ "", "", "", triple);
+ break;
+ case llvm::Triple::Solaris:
+ AddGnuCPlusPlusIncludePaths("/usr/gcc/4.5/include/c++/4.5.2/",
+ "i386-pc-solaris2.11", "", "", triple);
+ // Solaris - Fall though..
+ case llvm::Triple::AuroraUX:
+ // AuroraUX
+ AddGnuCPlusPlusIncludePaths("/opt/gcc4/include/c++/4.2.4",
+ "i386-pc-solaris2.11", "", "", triple);
+ break;
+ default:
+ break;
+ }
+}
+
+void InitHeaderSearch::AddDefaultIncludePaths(const LangOptions &Lang,
+ const llvm::Triple &triple,
+ const HeaderSearchOptions &HSOpts) {
+ // NB: This code path is going away. All of the logic is moving into the
+ // driver which has the information necessary to do target-specific
+ // selections of default include paths. Each target which moves there will be
+ // exempted from this logic here until we can delete the entire pile of code.
+ switch (triple.getOS()) {
+ default:
+ break; // Everything else continues to use this routine's logic.
+
+ case llvm::Triple::Linux:
+ case llvm::Triple::Win32:
+ return;
+ }
+
+ if (Lang.CPlusPlus && HSOpts.UseStandardCXXIncludes &&
+ HSOpts.UseStandardSystemIncludes) {
+ if (HSOpts.UseLibcxx) {
+ if (triple.isOSDarwin()) {
+ // On Darwin, libc++ may be installed alongside the compiler in
+ // lib/c++/v1.
+ llvm::sys::Path P(HSOpts.ResourceDir);
+ if (!P.isEmpty()) {
+ P.eraseComponent(); // Remove version from foo/lib/clang/version
+ P.eraseComponent(); // Remove clang from foo/lib/clang
+
+ // Get foo/lib/c++/v1
+ P.appendComponent("c++");
+ P.appendComponent("v1");
+ AddPath(P.str(), CXXSystem, true, false, false, true);
+ }
+ }
+ // On Solaris, include the support directory for things like xlocale and
+ // fudged system headers.
+ if (triple.getOS() == llvm::Triple::Solaris)
+ AddPath("/usr/include/c++/v1/support/solaris", CXXSystem, true, false,
+ false);
+
+ AddPath("/usr/include/c++/v1", CXXSystem, true, false, false);
+ } else {
+ AddDefaultCPlusPlusIncludePaths(triple, HSOpts);
+ }
+ }
+
+ AddDefaultCIncludePaths(triple, HSOpts);
+
+ // Add the default framework include paths on Darwin.
+ if (HSOpts.UseStandardSystemIncludes) {
+ if (triple.isOSDarwin()) {
+ AddPath("/System/Library/Frameworks", System, true, false, true);
+ AddPath("/Library/Frameworks", System, true, false, true);
+ }
+ }
+}
+
+/// RemoveDuplicates - If there are duplicate directory entries in the specified
+/// search list, remove the later (dead) ones. Returns the number of non-system
+/// headers removed, which is used to update NumAngled.
+static unsigned RemoveDuplicates(std::vector<DirectoryLookup> &SearchList,
+ unsigned First, bool Verbose) {
+ llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenDirs;
+ llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenFrameworkDirs;
+ llvm::SmallPtrSet<const HeaderMap *, 8> SeenHeaderMaps;
+ unsigned NonSystemRemoved = 0;
+ for (unsigned i = First; 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) {
+ llvm::errs() << "ignoring duplicate directory \""
+ << CurEntry.getName() << "\"\n";
+ if (DirToRemove != i)
+ llvm::errs() << " as it is a non-system directory that duplicates "
+ << "a system directory\n";
+ }
+ if (DirToRemove != i)
+ ++NonSystemRemoved;
+
+ // This is reached if the current entry is a duplicate. Remove the
+ // DirToRemove (usually the current dir).
+ SearchList.erase(SearchList.begin()+DirToRemove);
+ --i;
+ }
+ return NonSystemRemoved;
+}
+
+
+void InitHeaderSearch::Realize(const LangOptions &Lang) {
+ // Concatenate ANGLE+SYSTEM+AFTER chains together into SearchList.
+ std::vector<DirectoryLookup> SearchList;
+ SearchList.reserve(IncludePath.size());
+
+ // Quoted arguments go first.
+ for (path_iterator it = IncludePath.begin(), ie = IncludePath.end();
+ it != ie; ++it) {
+ if (it->first == Quoted)
+ SearchList.push_back(it->second);
+ }
+ // Deduplicate and remember index.
+ RemoveDuplicates(SearchList, 0, Verbose);
+ unsigned NumQuoted = SearchList.size();
+
+ for (path_iterator it = IncludePath.begin(), ie = IncludePath.end();
+ it != ie; ++it) {
+ if (it->first == Angled || it->first == IndexHeaderMap)
+ SearchList.push_back(it->second);
+ }
+
+ RemoveDuplicates(SearchList, NumQuoted, Verbose);
+ unsigned NumAngled = SearchList.size();
+
+ for (path_iterator it = IncludePath.begin(), ie = IncludePath.end();
+ it != ie; ++it) {
+ if (it->first == System ||
+ (!Lang.ObjC1 && !Lang.CPlusPlus && it->first == CSystem) ||
+ (/*FIXME !Lang.ObjC1 && */Lang.CPlusPlus && it->first == CXXSystem) ||
+ (Lang.ObjC1 && !Lang.CPlusPlus && it->first == ObjCSystem) ||
+ (Lang.ObjC1 && Lang.CPlusPlus && it->first == ObjCXXSystem))
+ SearchList.push_back(it->second);
+ }
+
+ for (path_iterator it = IncludePath.begin(), ie = IncludePath.end();
+ it != ie; ++it) {
+ if (it->first == After)
+ SearchList.push_back(it->second);
+ }
+
+ // Remove duplicates across both the Angled and System directories. GCC does
+ // this and failing to remove duplicates across these two groups breaks
+ // #include_next.
+ unsigned NonSystemRemoved = RemoveDuplicates(SearchList, NumQuoted, Verbose);
+ NumAngled -= NonSystemRemoved;
+
+ bool DontSearchCurDir = false; // TODO: set to true if -I- is set?
+ Headers.SetSearchPaths(SearchList, NumQuoted, NumAngled, DontSearchCurDir);
+
+ // If verbose, print the list of directories that will be searched.
+ if (Verbose) {
+ llvm::errs() << "#include \"...\" search starts here:\n";
+ for (unsigned i = 0, e = SearchList.size(); i != e; ++i) {
+ if (i == NumQuoted)
+ llvm::errs() << "#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)";
+ }
+ llvm::errs() << " " << Name << Suffix << "\n";
+ }
+ llvm::errs() << "End of search list.\n";
+ }
+}
+
+void clang::ApplyHeaderSearchOptions(HeaderSearch &HS,
+ const HeaderSearchOptions &HSOpts,
+ const LangOptions &Lang,
+ const llvm::Triple &Triple) {
+ InitHeaderSearch Init(HS, HSOpts.Verbose, HSOpts.Sysroot);
+
+ // Add the user defined entries.
+ for (unsigned i = 0, e = HSOpts.UserEntries.size(); i != e; ++i) {
+ const HeaderSearchOptions::Entry &E = HSOpts.UserEntries[i];
+ Init.AddPath(E.Path, E.Group, !E.ImplicitExternC, E.IsUserSupplied,
+ E.IsFramework, E.IgnoreSysRoot);
+ }
+
+ Init.AddDefaultIncludePaths(Lang, Triple, HSOpts);
+
+ if (HSOpts.UseBuiltinIncludes) {
+ // Set up the builtin include directory in the module map.
+ llvm::sys::Path P(HSOpts.ResourceDir);
+ P.appendComponent("include");
+ if (const DirectoryEntry *Dir = HS.getFileMgr().getDirectory(P.str()))
+ HS.getModuleMap().setBuiltinIncludeDir(Dir);
+ }
+
+ Init.Realize(Lang);
+}