Home | History | Annotate | Line # | Download | only in ToolChains 
      1 //===--- MinGW.cpp - MinGWToolChain Implementation ------------------------===//
      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-exception
      6 //
      7 //===----------------------------------------------------------------------===//
      8 
      9 #include "MinGW.h"
     10 #include "InputInfo.h"
     11 #include "CommonArgs.h"
     12 #include "clang/Config/config.h"
     13 #include "clang/Driver/Compilation.h"
     14 #include "clang/Driver/Driver.h"
     15 #include "clang/Driver/DriverDiagnostic.h"
     16 #include "clang/Driver/Options.h"
     17 #include "clang/Driver/SanitizerArgs.h"
     18 #include "llvm/Option/ArgList.h"
     19 #include "llvm/Support/FileSystem.h"
     20 #include "llvm/Support/Path.h"
     21 #include "llvm/Support/VirtualFileSystem.h"
     22 #include <system_error>
     23 
     24 using namespace clang::diag;
     25 using namespace clang::driver;
     26 using namespace clang;
     27 using namespace llvm::opt;
     28 
     29 /// MinGW Tools
     30 void tools::MinGW::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
     31                                            const InputInfo &Output,
     32                                            const InputInfoList &Inputs,
     33                                            const ArgList &Args,
     34                                            const char *LinkingOutput) const {
     35   claimNoWarnArgs(Args);
     36   ArgStringList CmdArgs;
     37 
     38   if (getToolChain().getArch() == llvm::Triple::x86) {
     39     CmdArgs.push_back("--32");
     40   } else if (getToolChain().getArch() == llvm::Triple::x86_64) {
     41     CmdArgs.push_back("--64");
     42   }
     43 
     44   Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
     45 
     46   CmdArgs.push_back("-o");
     47   CmdArgs.push_back(Output.getFilename());
     48 
     49   for (const auto &II : Inputs)
     50     CmdArgs.push_back(II.getFilename());
     51 
     52   const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
     53   C.addCommand(std::make_unique<Command>(JA, *this, ResponseFileSupport::None(),
     54                                          Exec, CmdArgs, Inputs, Output));
     55 
     56   if (Args.hasArg(options::OPT_gsplit_dwarf))
     57     SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
     58                    SplitDebugName(JA, Args, Inputs[0], Output));
     59 }
     60 
     61 void tools::MinGW::Linker::AddLibGCC(const ArgList &Args,
     62                                      ArgStringList &CmdArgs) const {
     63   if (Args.hasArg(options::OPT_mthreads))
     64     CmdArgs.push_back("-lmingwthrd");
     65   CmdArgs.push_back("-lmingw32");
     66 
     67   // Make use of compiler-rt if --rtlib option is used
     68   ToolChain::RuntimeLibType RLT = getToolChain().GetRuntimeLibType(Args);
     69   if (RLT == ToolChain::RLT_Libgcc) {
     70     bool Static = Args.hasArg(options::OPT_static_libgcc) ||
     71                   Args.hasArg(options::OPT_static);
     72     bool Shared = Args.hasArg(options::OPT_shared);
     73     bool CXX = getToolChain().getDriver().CCCIsCXX();
     74 
     75     if (Static || (!CXX && !Shared)) {
     76       CmdArgs.push_back("-lgcc");
     77       CmdArgs.push_back("-lgcc_eh");
     78     } else {
     79       CmdArgs.push_back("-lgcc_s");
     80       CmdArgs.push_back("-lgcc");
     81     }
     82   } else {
     83     AddRunTimeLibs(getToolChain(), getToolChain().getDriver(), CmdArgs, Args);
     84   }
     85 
     86   CmdArgs.push_back("-lmoldname");
     87   CmdArgs.push_back("-lmingwex");
     88   for (auto Lib : Args.getAllArgValues(options::OPT_l))
     89     if (StringRef(Lib).startswith("msvcr") || StringRef(Lib).startswith("ucrt"))
     90       return;
     91   CmdArgs.push_back("-lmsvcrt");
     92 }
     93 
     94 void tools::MinGW::Linker::ConstructJob(Compilation &C, const JobAction &JA,
     95                                         const InputInfo &Output,
     96                                         const InputInfoList &Inputs,
     97                                         const ArgList &Args,
     98                                         const char *LinkingOutput) const {
     99   const ToolChain &TC = getToolChain();
    100   const Driver &D = TC.getDriver();
    101   const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
    102 
    103   ArgStringList CmdArgs;
    104 
    105   // Silence warning for "clang -g foo.o -o foo"
    106   Args.ClaimAllArgs(options::OPT_g_Group);
    107   // and "clang -emit-llvm foo.o -o foo"
    108   Args.ClaimAllArgs(options::OPT_emit_llvm);
    109   // and for "clang -w foo.o -o foo". Other warning options are already
    110   // handled somewhere else.
    111   Args.ClaimAllArgs(options::OPT_w);
    112 
    113   if (!D.SysRoot.empty())
    114     CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
    115 
    116   if (Args.hasArg(options::OPT_s))
    117     CmdArgs.push_back("-s");
    118 
    119   CmdArgs.push_back("-m");
    120   switch (TC.getArch()) {
    121   case llvm::Triple::x86:
    122     CmdArgs.push_back("i386pe");
    123     break;
    124   case llvm::Triple::x86_64:
    125     CmdArgs.push_back("i386pep");
    126     break;
    127   case llvm::Triple::arm:
    128   case llvm::Triple::thumb:
    129     // FIXME: this is incorrect for WinCE
    130     CmdArgs.push_back("thumb2pe");
    131     break;
    132   case llvm::Triple::aarch64:
    133     CmdArgs.push_back("arm64pe");
    134     break;
    135   default:
    136     llvm_unreachable("Unsupported target architecture.");
    137   }
    138 
    139   if (Args.hasArg(options::OPT_mwindows)) {
    140     CmdArgs.push_back("--subsystem");
    141     CmdArgs.push_back("windows");
    142   } else if (Args.hasArg(options::OPT_mconsole)) {
    143     CmdArgs.push_back("--subsystem");
    144     CmdArgs.push_back("console");
    145   }
    146 
    147   if (Args.hasArg(options::OPT_mdll))
    148     CmdArgs.push_back("--dll");
    149   else if (Args.hasArg(options::OPT_shared))
    150     CmdArgs.push_back("--shared");
    151   if (Args.hasArg(options::OPT_static))
    152     CmdArgs.push_back("-Bstatic");
    153   else
    154     CmdArgs.push_back("-Bdynamic");
    155   if (Args.hasArg(options::OPT_mdll) || Args.hasArg(options::OPT_shared)) {
    156     CmdArgs.push_back("-e");
    157     if (TC.getArch() == llvm::Triple::x86)
    158       CmdArgs.push_back("_DllMainCRTStartup@12");
    159     else
    160       CmdArgs.push_back("DllMainCRTStartup");
    161     CmdArgs.push_back("--enable-auto-image-base");
    162   }
    163 
    164   CmdArgs.push_back("-o");
    165   const char *OutputFile = Output.getFilename();
    166   // GCC implicitly adds an .exe extension if it is given an output file name
    167   // that lacks an extension.
    168   // GCC used to do this only when the compiler itself runs on windows, but
    169   // since GCC 8 it does the same when cross compiling as well.
    170   if (!llvm::sys::path::has_extension(OutputFile)) {
    171     CmdArgs.push_back(Args.MakeArgString(Twine(OutputFile) + ".exe"));
    172     OutputFile = CmdArgs.back();
    173   } else
    174     CmdArgs.push_back(OutputFile);
    175 
    176   Args.AddAllArgs(CmdArgs, options::OPT_e);
    177   // FIXME: add -N, -n flags
    178   Args.AddLastArg(CmdArgs, options::OPT_r);
    179   Args.AddLastArg(CmdArgs, options::OPT_s);
    180   Args.AddLastArg(CmdArgs, options::OPT_t);
    181   Args.AddAllArgs(CmdArgs, options::OPT_u_Group);
    182   Args.AddLastArg(CmdArgs, options::OPT_Z_Flag);
    183 
    184   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
    185     if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_mdll)) {
    186       CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("dllcrt2.o")));
    187     } else {
    188       if (Args.hasArg(options::OPT_municode))
    189         CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crt2u.o")));
    190       else
    191         CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crt2.o")));
    192     }
    193     if (Args.hasArg(options::OPT_pg))
    194       CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("gcrt2.o")));
    195     CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));
    196   }
    197 
    198   Args.AddAllArgs(CmdArgs, options::OPT_L);
    199   TC.AddFilePathLibArgs(Args, CmdArgs);
    200 
    201   // Add the compiler-rt library directories if they exist to help
    202   // the linker find the various sanitizer, builtin, and profiling runtimes.
    203   for (const auto &LibPath : TC.getLibraryPaths()) {
    204     if (TC.getVFS().exists(LibPath))
    205       CmdArgs.push_back(Args.MakeArgString("-L" + LibPath));
    206   }
    207   auto CRTPath = TC.getCompilerRTPath();
    208   if (TC.getVFS().exists(CRTPath))
    209     CmdArgs.push_back(Args.MakeArgString("-L" + CRTPath));
    210 
    211   AddLinkerInputs(TC, Inputs, Args, CmdArgs, JA);
    212 
    213   // TODO: Add profile stuff here
    214 
    215   if (TC.ShouldLinkCXXStdlib(Args)) {
    216     bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
    217                                !Args.hasArg(options::OPT_static);
    218     if (OnlyLibstdcxxStatic)
    219       CmdArgs.push_back("-Bstatic");
    220     TC.AddCXXStdlibLibArgs(Args, CmdArgs);
    221     if (OnlyLibstdcxxStatic)
    222       CmdArgs.push_back("-Bdynamic");
    223   }
    224 
    225   bool HasWindowsApp = false;
    226   for (auto Lib : Args.getAllArgValues(options::OPT_l)) {
    227     if (Lib == "windowsapp") {
    228       HasWindowsApp = true;
    229       break;
    230     }
    231   }
    232 
    233   if (!Args.hasArg(options::OPT_nostdlib)) {
    234     if (!Args.hasArg(options::OPT_nodefaultlibs)) {
    235       if (Args.hasArg(options::OPT_static))
    236         CmdArgs.push_back("--start-group");
    237 
    238       if (Args.hasArg(options::OPT_fstack_protector) ||
    239           Args.hasArg(options::OPT_fstack_protector_strong) ||
    240           Args.hasArg(options::OPT_fstack_protector_all)) {
    241         CmdArgs.push_back("-lssp_nonshared");
    242         CmdArgs.push_back("-lssp");
    243       }
    244 
    245       if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
    246                        options::OPT_fno_openmp, false)) {
    247         switch (TC.getDriver().getOpenMPRuntime(Args)) {
    248         case Driver::OMPRT_OMP:
    249           CmdArgs.push_back("-lomp");
    250           break;
    251         case Driver::OMPRT_IOMP5:
    252           CmdArgs.push_back("-liomp5md");
    253           break;
    254         case Driver::OMPRT_GOMP:
    255           CmdArgs.push_back("-lgomp");
    256           break;
    257         case Driver::OMPRT_Unknown:
    258           // Already diagnosed.
    259           break;
    260         }
    261       }
    262 
    263       AddLibGCC(Args, CmdArgs);
    264 
    265       if (Args.hasArg(options::OPT_pg))
    266         CmdArgs.push_back("-lgmon");
    267 
    268       if (Args.hasArg(options::OPT_pthread))
    269         CmdArgs.push_back("-lpthread");
    270 
    271       if (Sanitize.needsAsanRt()) {
    272         // MinGW always links against a shared MSVCRT.
    273         CmdArgs.push_back(TC.getCompilerRTArgString(Args, "asan_dynamic",
    274                                                     ToolChain::FT_Shared));
    275         CmdArgs.push_back(
    276             TC.getCompilerRTArgString(Args, "asan_dynamic_runtime_thunk"));
    277         CmdArgs.push_back("--require-defined");
    278         CmdArgs.push_back(TC.getArch() == llvm::Triple::x86
    279                               ? "___asan_seh_interceptor"
    280                               : "__asan_seh_interceptor");
    281         // Make sure the linker consider all object files from the dynamic
    282         // runtime thunk.
    283         CmdArgs.push_back("--whole-archive");
    284         CmdArgs.push_back(
    285             TC.getCompilerRTArgString(Args, "asan_dynamic_runtime_thunk"));
    286         CmdArgs.push_back("--no-whole-archive");
    287       }
    288 
    289       TC.addProfileRTLibs(Args, CmdArgs);
    290 
    291       if (!HasWindowsApp) {
    292         // Add system libraries. If linking to libwindowsapp.a, that import
    293         // library replaces all these and we shouldn't accidentally try to
    294         // link to the normal desktop mode dlls.
    295         if (Args.hasArg(options::OPT_mwindows)) {
    296           CmdArgs.push_back("-lgdi32");
    297           CmdArgs.push_back("-lcomdlg32");
    298         }
    299         CmdArgs.push_back("-ladvapi32");
    300         CmdArgs.push_back("-lshell32");
    301         CmdArgs.push_back("-luser32");
    302         CmdArgs.push_back("-lkernel32");
    303       }
    304 
    305       if (Args.hasArg(options::OPT_static)) {
    306         CmdArgs.push_back("--end-group");
    307       } else {
    308         AddLibGCC(Args, CmdArgs);
    309         if (!HasWindowsApp)
    310           CmdArgs.push_back("-lkernel32");
    311       }
    312     }
    313 
    314     if (!Args.hasArg(options::OPT_nostartfiles)) {
    315       // Add crtfastmath.o if available and fast math is enabled.
    316       TC.addFastMathRuntimeIfAvailable(Args, CmdArgs);
    317 
    318       CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
    319     }
    320   }
    321   const char *Exec = Args.MakeArgString(TC.GetLinkerPath());
    322   C.addCommand(std::make_unique<Command>(JA, *this,
    323                                          ResponseFileSupport::AtFileUTF8(),
    324                                          Exec, CmdArgs, Inputs, Output));
    325 }
    326 
    327 // Simplified from Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple.
    328 static bool findGccVersion(StringRef LibDir, std::string &GccLibDir,
    329                            std::string &Ver) {
    330   auto Version = toolchains::Generic_GCC::GCCVersion::Parse("0.0.0");
    331   std::error_code EC;
    332   for (llvm::sys::fs::directory_iterator LI(LibDir, EC), LE; !EC && LI != LE;
    333        LI = LI.increment(EC)) {
    334     StringRef VersionText = llvm::sys::path::filename(LI->path());
    335     auto CandidateVersion =
    336         toolchains::Generic_GCC::GCCVersion::Parse(VersionText);
    337     if (CandidateVersion.Major == -1)
    338       continue;
    339     if (CandidateVersion <= Version)
    340       continue;
    341     Ver = std::string(VersionText);
    342     GccLibDir = LI->path();
    343   }
    344   return Ver.size();
    345 }
    346 
    347 void toolchains::MinGW::findGccLibDir() {
    348   llvm::SmallVector<llvm::SmallString<32>, 2> Archs;
    349   Archs.emplace_back(getTriple().getArchName());
    350   Archs[0] += "-w64-mingw32";
    351   Archs.emplace_back("mingw32");
    352   if (Arch.empty())
    353     Arch = std::string(Archs[0].str());
    354   // lib: Arch Linux, Ubuntu, Windows
    355   // lib64: openSUSE Linux
    356   for (StringRef CandidateLib : {"lib", "lib64"}) {
    357     for (StringRef CandidateArch : Archs) {
    358       llvm::SmallString<1024> LibDir(Base);
    359       llvm::sys::path::append(LibDir, CandidateLib, "gcc", CandidateArch);
    360       if (findGccVersion(LibDir, GccLibDir, Ver)) {
    361         Arch = std::string(CandidateArch);
    362         return;
    363       }
    364     }
    365   }
    366 }
    367 
    368 llvm::ErrorOr<std::string> toolchains::MinGW::findGcc() {
    369   llvm::SmallVector<llvm::SmallString<32>, 2> Gccs;
    370   Gccs.emplace_back(getTriple().getArchName());
    371   Gccs[0] += "-w64-mingw32-gcc";
    372   Gccs.emplace_back("mingw32-gcc");
    373   // Please do not add "gcc" here
    374   for (StringRef CandidateGcc : Gccs)
    375     if (llvm::ErrorOr<std::string> GPPName = llvm::sys::findProgramByName(CandidateGcc))
    376       return GPPName;
    377   return make_error_code(std::errc::no_such_file_or_directory);
    378 }
    379 
    380 llvm::ErrorOr<std::string> toolchains::MinGW::findClangRelativeSysroot() {
    381   llvm::SmallVector<llvm::SmallString<32>, 2> Subdirs;
    382   Subdirs.emplace_back(getTriple().str());
    383   Subdirs.emplace_back(getTriple().getArchName());
    384   Subdirs[1] += "-w64-mingw32";
    385   StringRef ClangRoot =
    386       llvm::sys::path::parent_path(getDriver().getInstalledDir());
    387   StringRef Sep = llvm::sys::path::get_separator();
    388   for (StringRef CandidateSubdir : Subdirs) {
    389     if (llvm::sys::fs::is_directory(ClangRoot + Sep + CandidateSubdir)) {
    390       Arch = std::string(CandidateSubdir);
    391       return (ClangRoot + Sep + CandidateSubdir).str();
    392     }
    393   }
    394   return make_error_code(std::errc::no_such_file_or_directory);
    395 }
    396 
    397 toolchains::MinGW::MinGW(const Driver &D, const llvm::Triple &Triple,
    398                          const ArgList &Args)
    399     : ToolChain(D, Triple, Args), CudaInstallation(D, Triple, Args),
    400       RocmInstallation(D, Triple, Args) {
    401   getProgramPaths().push_back(getDriver().getInstalledDir());
    402 
    403   if (getDriver().SysRoot.size())
    404     Base = getDriver().SysRoot;
    405   // Look for <clang-bin>/../<triplet>; if found, use <clang-bin>/.. as the
    406   // base as it could still be a base for a gcc setup with libgcc.
    407   else if (llvm::ErrorOr<std::string> TargetSubdir = findClangRelativeSysroot())
    408     Base = std::string(llvm::sys::path::parent_path(TargetSubdir.get()));
    409   else if (llvm::ErrorOr<std::string> GPPName = findGcc())
    410     Base = std::string(llvm::sys::path::parent_path(
    411         llvm::sys::path::parent_path(GPPName.get())));
    412   else
    413     Base = std::string(
    414         llvm::sys::path::parent_path(getDriver().getInstalledDir()));
    415 
    416   Base += llvm::sys::path::get_separator();
    417   findGccLibDir();
    418   // GccLibDir must precede Base/lib so that the
    419   // correct crtbegin.o ,cetend.o would be found.
    420   getFilePaths().push_back(GccLibDir);
    421   getFilePaths().push_back(
    422       (Base + Arch + llvm::sys::path::get_separator() + "lib").str());
    423   getFilePaths().push_back(Base + "lib");
    424   // openSUSE
    425   getFilePaths().push_back(Base + Arch + "/sys-root/mingw/lib");
    426 
    427   NativeLLVMSupport =
    428       Args.getLastArgValue(options::OPT_fuse_ld_EQ, CLANG_DEFAULT_LINKER)
    429           .equals_lower("lld");
    430 }
    431 
    432 bool toolchains::MinGW::IsIntegratedAssemblerDefault() const { return true; }
    433 
    434 Tool *toolchains::MinGW::getTool(Action::ActionClass AC) const {
    435   switch (AC) {
    436   case Action::PreprocessJobClass:
    437     if (!Preprocessor)
    438       Preprocessor.reset(new tools::gcc::Preprocessor(*this));
    439     return Preprocessor.get();
    440   case Action::CompileJobClass:
    441     if (!Compiler)
    442       Compiler.reset(new tools::gcc::Compiler(*this));
    443     return Compiler.get();
    444   default:
    445     return ToolChain::getTool(AC);
    446   }
    447 }
    448 
    449 Tool *toolchains::MinGW::buildAssembler() const {
    450   return new tools::MinGW::Assembler(*this);
    451 }
    452 
    453 Tool *toolchains::MinGW::buildLinker() const {
    454   return new tools::MinGW::Linker(*this);
    455 }
    456 
    457 bool toolchains::MinGW::HasNativeLLVMSupport() const {
    458   return NativeLLVMSupport;
    459 }
    460 
    461 bool toolchains::MinGW::IsUnwindTablesDefault(const ArgList &Args) const {
    462   Arg *ExceptionArg = Args.getLastArg(options::OPT_fsjlj_exceptions,
    463                                       options::OPT_fseh_exceptions,
    464                                       options::OPT_fdwarf_exceptions);
    465   if (ExceptionArg &&
    466       ExceptionArg->getOption().matches(options::OPT_fseh_exceptions))
    467     return true;
    468   return getArch() == llvm::Triple::x86_64 ||
    469          getArch() == llvm::Triple::aarch64;
    470 }
    471 
    472 bool toolchains::MinGW::isPICDefault() const {
    473   return getArch() == llvm::Triple::x86_64;
    474 }
    475 
    476 bool toolchains::MinGW::isPIEDefault() const { return false; }
    477 
    478 bool toolchains::MinGW::isPICDefaultForced() const {
    479   return getArch() == llvm::Triple::x86_64;
    480 }
    481 
    482 llvm::ExceptionHandling
    483 toolchains::MinGW::GetExceptionModel(const ArgList &Args) const {
    484   if (getArch() == llvm::Triple::x86_64 || getArch() == llvm::Triple::aarch64)
    485     return llvm::ExceptionHandling::WinEH;
    486   return llvm::ExceptionHandling::DwarfCFI;
    487 }
    488 
    489 SanitizerMask toolchains::MinGW::getSupportedSanitizers() const {
    490   SanitizerMask Res = ToolChain::getSupportedSanitizers();
    491   Res |= SanitizerKind::Address;
    492   Res |= SanitizerKind::PointerCompare;
    493   Res |= SanitizerKind::PointerSubtract;
    494   Res |= SanitizerKind::Vptr;
    495   return Res;
    496 }
    497 
    498 void toolchains::MinGW::AddCudaIncludeArgs(const ArgList &DriverArgs,
    499                                            ArgStringList &CC1Args) const {
    500   CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
    501 }
    502 
    503 void toolchains::MinGW::AddHIPIncludeArgs(const ArgList &DriverArgs,
    504                                           ArgStringList &CC1Args) const {
    505   RocmInstallation.AddHIPIncludeArgs(DriverArgs, CC1Args);
    506 }
    507 
    508 void toolchains::MinGW::printVerboseInfo(raw_ostream &OS) const {
    509   CudaInstallation.print(OS);
    510   RocmInstallation.print(OS);
    511 }
    512 
    513 // Include directories for various hosts:
    514 
    515 // Windows, mingw.org
    516 // c:\mingw\lib\gcc\mingw32\4.8.1\include\c++
    517 // c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\mingw32
    518 // c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\backward
    519 // c:\mingw\include
    520 // c:\mingw\mingw32\include
    521 
    522 // Windows, mingw-w64 mingw-builds
    523 // c:\mingw32\i686-w64-mingw32\include
    524 // c:\mingw32\i686-w64-mingw32\include\c++
    525 // c:\mingw32\i686-w64-mingw32\include\c++\i686-w64-mingw32
    526 // c:\mingw32\i686-w64-mingw32\include\c++\backward
    527 
    528 // Windows, mingw-w64 msys2
    529 // c:\msys64\mingw32\include
    530 // c:\msys64\mingw32\i686-w64-mingw32\include
    531 // c:\msys64\mingw32\include\c++\4.9.2
    532 // c:\msys64\mingw32\include\c++\4.9.2\i686-w64-mingw32
    533 // c:\msys64\mingw32\include\c++\4.9.2\backward
    534 
    535 // openSUSE
    536 // /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++
    537 // /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++/x86_64-w64-mingw32
    538 // /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++/backward
    539 // /usr/x86_64-w64-mingw32/sys-root/mingw/include
    540 
    541 // Arch Linux
    542 // /usr/i686-w64-mingw32/include/c++/5.1.0
    543 // /usr/i686-w64-mingw32/include/c++/5.1.0/i686-w64-mingw32
    544 // /usr/i686-w64-mingw32/include/c++/5.1.0/backward
    545 // /usr/i686-w64-mingw32/include
    546 
    547 // Ubuntu
    548 // /usr/include/c++/4.8
    549 // /usr/include/c++/4.8/x86_64-w64-mingw32
    550 // /usr/include/c++/4.8/backward
    551 // /usr/x86_64-w64-mingw32/include
    552 
    553 void toolchains::MinGW::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
    554                                                   ArgStringList &CC1Args) const {
    555   if (DriverArgs.hasArg(options::OPT_nostdinc))
    556     return;
    557 
    558   if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
    559     SmallString<1024> P(getDriver().ResourceDir);
    560     llvm::sys::path::append(P, "include");
    561     addSystemInclude(DriverArgs, CC1Args, P.str());
    562   }
    563 
    564   if (DriverArgs.hasArg(options::OPT_nostdlibinc))
    565     return;
    566 
    567   if (GetRuntimeLibType(DriverArgs) == ToolChain::RLT_Libgcc) {
    568     // openSUSE
    569     addSystemInclude(DriverArgs, CC1Args,
    570                      Base + Arch + "/sys-root/mingw/include");
    571   }
    572 
    573   addSystemInclude(DriverArgs, CC1Args,
    574                    Base + Arch + llvm::sys::path::get_separator() + "include");
    575   addSystemInclude(DriverArgs, CC1Args, Base + "include");
    576 }
    577 
    578 void toolchains::MinGW::AddClangCXXStdlibIncludeArgs(
    579     const ArgList &DriverArgs, ArgStringList &CC1Args) const {
    580   if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
    581       DriverArgs.hasArg(options::OPT_nostdincxx))
    582     return;
    583 
    584   StringRef Slash = llvm::sys::path::get_separator();
    585 
    586   switch (GetCXXStdlibType(DriverArgs)) {
    587   case ToolChain::CST_Libcxx:
    588     addSystemInclude(DriverArgs, CC1Args, Base + Arch + Slash + "include" +
    589                                               Slash + "c++" + Slash + "v1");
    590     addSystemInclude(DriverArgs, CC1Args,
    591                      Base + "include" + Slash + "c++" + Slash + "v1");
    592     break;
    593 
    594   case ToolChain::CST_Libstdcxx:
    595     llvm::SmallVector<llvm::SmallString<1024>, 4> CppIncludeBases;
    596     CppIncludeBases.emplace_back(Base);
    597     llvm::sys::path::append(CppIncludeBases[0], Arch, "include", "c++");
    598     CppIncludeBases.emplace_back(Base);
    599     llvm::sys::path::append(CppIncludeBases[1], Arch, "include", "c++", Ver);
    600     CppIncludeBases.emplace_back(Base);
    601     llvm::sys::path::append(CppIncludeBases[2], "include", "c++", Ver);
    602     CppIncludeBases.emplace_back(GccLibDir);
    603     llvm::sys::path::append(CppIncludeBases[3], "include", "c++");
    604     for (auto &CppIncludeBase : CppIncludeBases) {
    605       addSystemInclude(DriverArgs, CC1Args, CppIncludeBase);
    606       CppIncludeBase += Slash;
    607       addSystemInclude(DriverArgs, CC1Args, CppIncludeBase + Arch);
    608       addSystemInclude(DriverArgs, CC1Args, CppIncludeBase + "backward");
    609     }
    610     break;
    611   }
    612 }
    613