110 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "Cygwin.h"10#include "clang/Config/config.h"11#include "clang/Driver/CommonArgs.h"12#include "clang/Driver/Driver.h"13#include "clang/Options/Options.h"14#include "llvm/Support/Path.h"15#include "llvm/Support/VirtualFileSystem.h"16 17using namespace clang::driver;18using namespace clang::driver::toolchains;19using namespace clang;20using namespace llvm::opt;21 22using tools::addPathIfExists;23 24Cygwin::Cygwin(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)25 : Generic_GCC(D, Triple, Args) {26 GCCInstallation.init(Triple, Args);27 std::string SysRoot = computeSysRoot();28 ToolChain::path_list &PPaths = getProgramPaths();29 30 Generic_GCC::PushPPaths(PPaths);31 32 path_list &Paths = getFilePaths();33 34 Generic_GCC::AddMultiarchPaths(D, SysRoot, "lib", Paths);35 36 // Similar to the logic for GCC above, if we are currently running Clang37 // inside of the requested system root, add its parent library path to those38 // searched.39 // FIXME: It's not clear whether we should use the driver's installed40 // directory ('Dir' below) or the ResourceDir.41 if (StringRef(D.Dir).starts_with(SysRoot))42 addPathIfExists(D, D.Dir + "/../lib", Paths);43 44 addPathIfExists(D, SysRoot + "/lib", Paths);45 addPathIfExists(D, SysRoot + "/usr/lib", Paths);46 addPathIfExists(D, SysRoot + "/usr/lib/w32api", Paths);47}48 49llvm::ExceptionHandling Cygwin::GetExceptionModel(const ArgList &Args) const {50 if (getArch() == llvm::Triple::x86_64 || getArch() == llvm::Triple::aarch64 ||51 getArch() == llvm::Triple::arm || getArch() == llvm::Triple::thumb)52 return llvm::ExceptionHandling::WinEH;53 return llvm::ExceptionHandling::DwarfCFI;54}55 56void Cygwin::AddClangSystemIncludeArgs(const ArgList &DriverArgs,57 ArgStringList &CC1Args) const {58 const Driver &D = getDriver();59 std::string SysRoot = computeSysRoot();60 61 if (DriverArgs.hasArg(options::OPT_nostdinc))62 return;63 64 if (!DriverArgs.hasArg(options::OPT_nostdlibinc))65 addSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/local/include");66 67 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {68 SmallString<128> P(D.ResourceDir);69 llvm::sys::path::append(P, "include");70 addSystemInclude(DriverArgs, CC1Args, P);71 }72 73 if (DriverArgs.hasArg(options::OPT_nostdlibinc))74 return;75 76 // Check for configure-time C include directories.77 StringRef CIncludeDirs(C_INCLUDE_DIRS);78 if (CIncludeDirs != "") {79 SmallVector<StringRef, 5> Dirs;80 CIncludeDirs.split(Dirs, ":");81 for (StringRef Dir : Dirs) {82 StringRef Prefix =83 llvm::sys::path::is_absolute(Dir) ? "" : StringRef(SysRoot);84 addExternCSystemInclude(DriverArgs, CC1Args, Prefix + Dir);85 }86 return;87 }88 89 // Lacking those, try to detect the correct set of system includes for the90 // target triple.91 92 AddMultilibIncludeArgs(DriverArgs, CC1Args);93 94 // On systems using multiarch, add /usr/include/$triple before95 // /usr/include.96 std::string MultiarchIncludeDir = getTriple().str();97 if (!MultiarchIncludeDir.empty() &&98 D.getVFS().exists(SysRoot + "/usr/include/" + MultiarchIncludeDir))99 addExternCSystemInclude(DriverArgs, CC1Args,100 SysRoot + "/usr/include/" + MultiarchIncludeDir);101 102 // Add an include of '/include' directly. This isn't provided by default by103 // system GCCs, but is often used with cross-compiling GCCs, and harmless to104 // add even when Clang is acting as-if it were a system compiler.105 addExternCSystemInclude(DriverArgs, CC1Args, SysRoot + "/include");106 107 addExternCSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/include");108 addExternCSystemInclude(DriverArgs, CC1Args, SysRoot + "/usr/include/w32api");109}110