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Diffstat (limited to 'clang/lib/Frontend/InitHeaderSearch.cpp')
| -rw-r--r-- | clang/lib/Frontend/InitHeaderSearch.cpp | 651 |
1 files changed, 651 insertions, 0 deletions
diff --git a/clang/lib/Frontend/InitHeaderSearch.cpp b/clang/lib/Frontend/InitHeaderSearch.cpp new file mode 100644 index 000000000000..5d877ee9c0d7 --- /dev/null +++ b/clang/lib/Frontend/InitHeaderSearch.cpp @@ -0,0 +1,651 @@ +//===--- InitHeaderSearch.cpp - Initialize header search paths ------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the InitHeaderSearch class. +// +//===----------------------------------------------------------------------===// + +#include "clang/Basic/FileManager.h" +#include "clang/Basic/LangOptions.h" +#include "clang/Config/config.h" // C_INCLUDE_DIRS +#include "clang/Frontend/FrontendDiagnostic.h" +#include "clang/Frontend/Utils.h" +#include "clang/Lex/HeaderMap.h" +#include "clang/Lex/HeaderSearch.h" +#include "clang/Lex/HeaderSearchOptions.h" +#include "llvm/ADT/SmallPtrSet.h" +#include "llvm/ADT/SmallString.h" +#include "llvm/ADT/SmallVector.h" +#include "llvm/ADT/StringExtras.h" +#include "llvm/ADT/Triple.h" +#include "llvm/ADT/Twine.h" +#include "llvm/Support/ErrorHandling.h" +#include "llvm/Support/Path.h" +#include "llvm/Support/raw_ostream.h" + +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; + std::vector<std::pair<std::string, bool> > SystemHeaderPrefixes; + HeaderSearch &Headers; + bool Verbose; + std::string IncludeSysroot; + bool HasSysroot; + +public: + + InitHeaderSearch(HeaderSearch &HS, bool verbose, StringRef sysroot) + : Headers(HS), Verbose(verbose), IncludeSysroot(sysroot), + HasSysroot(!(sysroot.empty() || sysroot == "/")) { + } + + /// AddPath - Add the specified path to the specified group list, prefixing + /// the sysroot if used. + /// Returns true if the path exists, false if it was ignored. + bool AddPath(const Twine &Path, IncludeDirGroup Group, bool isFramework); + + /// AddUnmappedPath - Add the specified path to the specified group list, + /// without performing any sysroot remapping. + /// Returns true if the path exists, false if it was ignored. + bool AddUnmappedPath(const Twine &Path, IncludeDirGroup Group, + bool isFramework); + + /// AddSystemHeaderPrefix - Add the specified prefix to the system header + /// prefix list. + void AddSystemHeaderPrefix(StringRef Prefix, bool IsSystemHeader) { + SystemHeaderPrefixes.emplace_back(Prefix, IsSystemHeader); + } + + /// AddGnuCPlusPlusIncludePaths - Add the necessary paths to support a gnu + /// libstdc++. + /// Returns true if the \p Base path was found, false if it does not exist. + bool 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); + + // 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 LangOptions &LangOpts, + 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. + +static bool CanPrefixSysroot(StringRef Path) { +#if defined(_WIN32) + return !Path.empty() && llvm::sys::path::is_separator(Path[0]); +#else + return llvm::sys::path::is_absolute(Path); +#endif +} + +bool InitHeaderSearch::AddPath(const Twine &Path, IncludeDirGroup Group, + bool isFramework) { + // Add the path with sysroot prepended, if desired and this is a system header + // group. + if (HasSysroot) { + SmallString<256> MappedPathStorage; + StringRef MappedPathStr = Path.toStringRef(MappedPathStorage); + if (CanPrefixSysroot(MappedPathStr)) { + return AddUnmappedPath(IncludeSysroot + Path, Group, isFramework); + } + } + + return AddUnmappedPath(Path, Group, isFramework); +} + +bool InitHeaderSearch::AddUnmappedPath(const Twine &Path, IncludeDirGroup Group, + bool isFramework) { + assert(!Path.isTriviallyEmpty() && "can't handle empty path here"); + + FileManager &FM = Headers.getFileMgr(); + SmallString<256> MappedPathStorage; + StringRef MappedPathStr = Path.toStringRef(MappedPathStorage); + + // If use system headers while cross-compiling, emit the warning. + if (HasSysroot && (MappedPathStr.startswith("/usr/include") || + MappedPathStr.startswith("/usr/local/include"))) { + Headers.getDiags().Report(diag::warn_poison_system_directories) + << MappedPathStr; + } + + // Compute the DirectoryLookup type. + SrcMgr::CharacteristicKind Type; + if (Group == Quoted || Group == Angled || Group == IndexHeaderMap) { + Type = SrcMgr::C_User; + } else if (Group == ExternCSystem) { + Type = SrcMgr::C_ExternCSystem; + } else { + Type = SrcMgr::C_System; + } + + // If the directory exists, add it. + if (auto DE = FM.getOptionalDirectoryRef(MappedPathStr)) { + IncludePath.push_back( + std::make_pair(Group, DirectoryLookup(*DE, Type, isFramework))); + return true; + } + + // Check to see if this is an apple-style headermap (which are not allowed to + // be frameworks). + if (!isFramework) { + if (auto 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, Group == IndexHeaderMap))); + return true; + } + } + } + + if (Verbose) + llvm::errs() << "ignoring nonexistent directory \"" + << MappedPathStr << "\"\n"; + return false; +} + +bool InitHeaderSearch::AddGnuCPlusPlusIncludePaths(StringRef Base, + StringRef ArchDir, + StringRef Dir32, + StringRef Dir64, + const llvm::Triple &triple) { + // Add the base dir + bool IsBaseFound = AddPath(Base, CXXSystem, 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, false); + else + AddPath(Base + "/" + ArchDir + "/" + Dir32, CXXSystem, false); + + // Add the backward dir + AddPath(Base + "/backward", CXXSystem, false); + return IsBaseFound; +} + +void InitHeaderSearch::AddMinGWCPlusPlusIncludePaths(StringRef Base, + StringRef Arch, + StringRef Version) { + AddPath(Base + "/" + Arch + "/" + Version + "/include/c++", + CXXSystem, false); + AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/" + Arch, + CXXSystem, false); + AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/backward", + CXXSystem, false); +} + +void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple, + const HeaderSearchOptions &HSOpts) { + llvm::Triple::OSType os = triple.getOS(); + + if (triple.isOSDarwin()) { + llvm_unreachable("Include management is handled in the driver."); + } + + if (HSOpts.UseStandardSystemIncludes) { + switch (os) { + case llvm::Triple::CloudABI: + case llvm::Triple::FreeBSD: + case llvm::Triple::NetBSD: + case llvm::Triple::OpenBSD: + case llvm::Triple::NaCl: + case llvm::Triple::PS4: + case llvm::Triple::ELFIAMCU: + case llvm::Triple::Fuchsia: + break; + case llvm::Triple::Win32: + if (triple.getEnvironment() != llvm::Triple::Cygnus) + break; + LLVM_FALLTHROUGH; + default: + // FIXME: temporary hack: hard-coded paths. + AddPath("/usr/local/include", System, 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. + SmallString<128> P = StringRef(HSOpts.ResourceDir); + llvm::sys::path::append(P, "include"); + AddUnmappedPath(P, ExternCSystem, false); + } + + // 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 (StringRef dir : dirs) + AddPath(dir, ExternCSystem, false); + return; + } + + switch (os) { + case llvm::Triple::Linux: + case llvm::Triple::Hurd: + case llvm::Triple::Solaris: + llvm_unreachable("Include management is handled in the driver."); + + case llvm::Triple::CloudABI: { + // <sysroot>/<triple>/include + SmallString<128> P = StringRef(HSOpts.ResourceDir); + llvm::sys::path::append(P, "../../..", triple.str(), "include"); + AddPath(P, System, false); + break; + } + + case llvm::Triple::Haiku: + AddPath("/boot/system/non-packaged/develop/headers", System, false); + AddPath("/boot/system/develop/headers/os", System, false); + AddPath("/boot/system/develop/headers/os/app", System, false); + AddPath("/boot/system/develop/headers/os/arch", System, false); + AddPath("/boot/system/develop/headers/os/device", System, false); + AddPath("/boot/system/develop/headers/os/drivers", System, false); + AddPath("/boot/system/develop/headers/os/game", System, false); + AddPath("/boot/system/develop/headers/os/interface", System, false); + AddPath("/boot/system/develop/headers/os/kernel", System, false); + AddPath("/boot/system/develop/headers/os/locale", System, false); + AddPath("/boot/system/develop/headers/os/mail", System, false); + AddPath("/boot/system/develop/headers/os/media", System, false); + AddPath("/boot/system/develop/headers/os/midi", System, false); + AddPath("/boot/system/develop/headers/os/midi2", System, false); + AddPath("/boot/system/develop/headers/os/net", System, false); + AddPath("/boot/system/develop/headers/os/opengl", System, false); + AddPath("/boot/system/develop/headers/os/storage", System, false); + AddPath("/boot/system/develop/headers/os/support", System, false); + AddPath("/boot/system/develop/headers/os/translation", System, false); + AddPath("/boot/system/develop/headers/os/add-ons/graphics", System, false); + AddPath("/boot/system/develop/headers/os/add-ons/input_server", System, false); + AddPath("/boot/system/develop/headers/os/add-ons/mail_daemon", System, false); + AddPath("/boot/system/develop/headers/os/add-ons/registrar", System, false); + AddPath("/boot/system/develop/headers/os/add-ons/screen_saver", System, false); + AddPath("/boot/system/develop/headers/os/add-ons/tracker", System, false); + AddPath("/boot/system/develop/headers/os/be_apps/Deskbar", System, false); + AddPath("/boot/system/develop/headers/os/be_apps/NetPositive", System, false); + AddPath("/boot/system/develop/headers/os/be_apps/Tracker", System, false); + AddPath("/boot/system/develop/headers/3rdparty", System, false); + AddPath("/boot/system/develop/headers/bsd", System, false); + AddPath("/boot/system/develop/headers/glibc", System, false); + AddPath("/boot/system/develop/headers/posix", System, false); + AddPath("/boot/system/develop/headers", System, false); + break; + case llvm::Triple::RTEMS: + break; + case llvm::Triple::Win32: + switch (triple.getEnvironment()) { + default: llvm_unreachable("Include management is handled in the driver."); + case llvm::Triple::Cygnus: + AddPath("/usr/include/w32api", System, false); + break; + case llvm::Triple::GNU: + break; + } + break; + default: + break; + } + + switch (os) { + case llvm::Triple::CloudABI: + case llvm::Triple::RTEMS: + case llvm::Triple::NaCl: + case llvm::Triple::ELFIAMCU: + case llvm::Triple::Fuchsia: + break; + case llvm::Triple::PS4: { + // <isysroot> gets prepended later in AddPath(). + std::string BaseSDKPath = ""; + if (!HasSysroot) { + const char *envValue = getenv("SCE_ORBIS_SDK_DIR"); + if (envValue) + BaseSDKPath = envValue; + else { + // HSOpts.ResourceDir variable contains the location of Clang's + // resource files. + // Assuming that Clang is configured for PS4 without + // --with-clang-resource-dir option, the location of Clang's resource + // files is <SDK_DIR>/host_tools/lib/clang + SmallString<128> P = StringRef(HSOpts.ResourceDir); + llvm::sys::path::append(P, "../../.."); + BaseSDKPath = P.str(); + } + } + AddPath(BaseSDKPath + "/target/include", System, false); + if (triple.isPS4CPU()) + AddPath(BaseSDKPath + "/target/include_common", System, false); + LLVM_FALLTHROUGH; + } + default: + AddPath("/usr/include", ExternCSystem, false); + break; + } +} + +void InitHeaderSearch::AddDefaultCPlusPlusIncludePaths( + const LangOptions &LangOpts, const llvm::Triple &triple, + const HeaderSearchOptions &HSOpts) { + llvm::Triple::OSType os = triple.getOS(); + // FIXME: temporary hack: hard-coded paths. + + if (triple.isOSDarwin()) { + llvm_unreachable("Include management is handled in the driver."); + } + + switch (os) { + case llvm::Triple::Linux: + case llvm::Triple::Hurd: + case llvm::Triple::Solaris: + llvm_unreachable("Include management is handled in the driver."); + break; + case llvm::Triple::Win32: + switch (triple.getEnvironment()) { + default: llvm_unreachable("Include management is handled in the driver."); + case llvm::Triple::Cygnus: + // Cygwin-1.7 + AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.7.3"); + 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; + } + break; + case llvm::Triple::DragonFly: + AddPath("/usr/include/c++/5.0", CXXSystem, false); + break; + case llvm::Triple::Minix: + AddGnuCPlusPlusIncludePaths("/usr/gnu/include/c++/4.4.3", + "", "", "", 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::Emscripten: + case llvm::Triple::Linux: + case llvm::Triple::Hurd: + case llvm::Triple::Solaris: + case llvm::Triple::WASI: + return; + + case llvm::Triple::Win32: + if (triple.getEnvironment() != llvm::Triple::Cygnus || + triple.isOSBinFormatMachO()) + return; + break; + + case llvm::Triple::UnknownOS: + if (triple.getArch() == llvm::Triple::wasm32 || + triple.getArch() == llvm::Triple::wasm64) + return; + break; + } + + // All header search logic is handled in the Driver for Darwin. + if (triple.isOSDarwin()) { + if (HSOpts.UseStandardSystemIncludes) { + // Add the default framework include paths on Darwin. + AddPath("/System/Library/Frameworks", System, true); + AddPath("/Library/Frameworks", System, true); + } + return; + } + + if (Lang.CPlusPlus && !Lang.AsmPreprocessor && + HSOpts.UseStandardCXXIncludes && HSOpts.UseStandardSystemIncludes) { + if (HSOpts.UseLibcxx) { + AddPath("/usr/include/c++/v1", CXXSystem, false); + } else { + AddDefaultCPlusPlusIncludePaths(Lang, triple, HSOpts); + } + } + + AddDefaultCIncludePaths(triple, HSOpts); +} + +/// 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()).second) + 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()).second) + 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()).second) + 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 = First;; ++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 (auto &Include : IncludePath) + if (Include.first == Quoted) + SearchList.push_back(Include.second); + + // Deduplicate and remember index. + RemoveDuplicates(SearchList, 0, Verbose); + unsigned NumQuoted = SearchList.size(); + + for (auto &Include : IncludePath) + if (Include.first == Angled || Include.first == IndexHeaderMap) + SearchList.push_back(Include.second); + + RemoveDuplicates(SearchList, NumQuoted, Verbose); + unsigned NumAngled = SearchList.size(); + + for (auto &Include : IncludePath) + if (Include.first == System || Include.first == ExternCSystem || + (!Lang.ObjC && !Lang.CPlusPlus && Include.first == CSystem) || + (/*FIXME !Lang.ObjC && */ Lang.CPlusPlus && + Include.first == CXXSystem) || + (Lang.ObjC && !Lang.CPlusPlus && Include.first == ObjCSystem) || + (Lang.ObjC && Lang.CPlusPlus && Include.first == ObjCXXSystem)) + SearchList.push_back(Include.second); + + for (auto &Include : IncludePath) + if (Include.first == After) + SearchList.push_back(Include.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); + + Headers.SetSystemHeaderPrefixes(SystemHeaderPrefixes); + + // 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"; + StringRef 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]; + if (E.IgnoreSysRoot) { + Init.AddUnmappedPath(E.Path, E.Group, E.IsFramework); + } else { + Init.AddPath(E.Path, E.Group, E.IsFramework); + } + } + + Init.AddDefaultIncludePaths(Lang, Triple, HSOpts); + + for (unsigned i = 0, e = HSOpts.SystemHeaderPrefixes.size(); i != e; ++i) + Init.AddSystemHeaderPrefix(HSOpts.SystemHeaderPrefixes[i].Prefix, + HSOpts.SystemHeaderPrefixes[i].IsSystemHeader); + + if (HSOpts.UseBuiltinIncludes) { + // Set up the builtin include directory in the module map. + SmallString<128> P = StringRef(HSOpts.ResourceDir); + llvm::sys::path::append(P, "include"); + if (auto Dir = HS.getFileMgr().getDirectory(P)) + HS.getModuleMap().setBuiltinIncludeDir(*Dir); + } + + Init.Realize(Lang); +} |