contrib/llvm/tools/clang/lib/Driver/ToolChains/MinGW.cpp

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