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 <system_error>
22 
23 using namespace clang::diag;
24 using namespace clang::driver;
25 using namespace clang;
26 using namespace llvm::opt;
27 
28 /// MinGW Tools
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const29 void tools::MinGW::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
30                                            const InputInfo &Output,
31                                            const InputInfoList &Inputs,
32                                            const ArgList &Args,
33                                            const char *LinkingOutput) const {
34   claimNoWarnArgs(Args);
35   ArgStringList CmdArgs;
36 
37   if (getToolChain().getArch() == llvm::Triple::x86) {
38     CmdArgs.push_back("--32");
39   } else if (getToolChain().getArch() == llvm::Triple::x86_64) {
40     CmdArgs.push_back("--64");
41   }
42 
43   Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
44 
45   CmdArgs.push_back("-o");
46   CmdArgs.push_back(Output.getFilename());
47 
48   for (const auto &II : Inputs)
49     CmdArgs.push_back(II.getFilename());
50 
51   const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
52   C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
53 
54   if (Args.hasArg(options::OPT_gsplit_dwarf))
55     SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
56                    SplitDebugName(Args, Inputs[0], Output));
57 }
58 
AddLibGCC(const ArgList & Args,ArgStringList & CmdArgs) const59 void tools::MinGW::Linker::AddLibGCC(const ArgList &Args,
60                                      ArgStringList &CmdArgs) const {
61   if (Args.hasArg(options::OPT_mthreads))
62     CmdArgs.push_back("-lmingwthrd");
63   CmdArgs.push_back("-lmingw32");
64 
65   // Make use of compiler-rt if --rtlib option is used
66   ToolChain::RuntimeLibType RLT = getToolChain().GetRuntimeLibType(Args);
67   if (RLT == ToolChain::RLT_Libgcc) {
68     bool Static = Args.hasArg(options::OPT_static_libgcc) ||
69                   Args.hasArg(options::OPT_static);
70     bool Shared = Args.hasArg(options::OPT_shared);
71     bool CXX = getToolChain().getDriver().CCCIsCXX();
72 
73     if (Static || (!CXX && !Shared)) {
74       CmdArgs.push_back("-lgcc");
75       CmdArgs.push_back("-lgcc_eh");
76     } else {
77       CmdArgs.push_back("-lgcc_s");
78       CmdArgs.push_back("-lgcc");
79     }
80   } else {
81     AddRunTimeLibs(getToolChain(), getToolChain().getDriver(), CmdArgs, Args);
82   }
83 
84   CmdArgs.push_back("-lmoldname");
85   CmdArgs.push_back("-lmingwex");
86   for (auto Lib : Args.getAllArgValues(options::OPT_l))
87     if (StringRef(Lib).startswith("msvcr") || StringRef(Lib).startswith("ucrt"))
88       return;
89   CmdArgs.push_back("-lmsvcrt");
90 }
91 
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const92 void tools::MinGW::Linker::ConstructJob(Compilation &C, const JobAction &JA,
93                                         const InputInfo &Output,
94                                         const InputInfoList &Inputs,
95                                         const ArgList &Args,
96                                         const char *LinkingOutput) const {
97   const ToolChain &TC = getToolChain();
98   const Driver &D = TC.getDriver();
99   const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
100 
101   ArgStringList CmdArgs;
102 
103   // Silence warning for "clang -g foo.o -o foo"
104   Args.ClaimAllArgs(options::OPT_g_Group);
105   // and "clang -emit-llvm foo.o -o foo"
106   Args.ClaimAllArgs(options::OPT_emit_llvm);
107   // and for "clang -w foo.o -o foo". Other warning options are already
108   // handled somewhere else.
109   Args.ClaimAllArgs(options::OPT_w);
110 
111   if (!D.SysRoot.empty())
112     CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
113 
114   if (Args.hasArg(options::OPT_s))
115     CmdArgs.push_back("-s");
116 
117   CmdArgs.push_back("-m");
118   switch (TC.getArch()) {
119   case llvm::Triple::x86:
120     CmdArgs.push_back("i386pe");
121     break;
122   case llvm::Triple::x86_64:
123     CmdArgs.push_back("i386pep");
124     break;
125   case llvm::Triple::arm:
126   case llvm::Triple::thumb:
127     // FIXME: this is incorrect for WinCE
128     CmdArgs.push_back("thumb2pe");
129     break;
130   case llvm::Triple::aarch64:
131     CmdArgs.push_back("arm64pe");
132     break;
133   default:
134     llvm_unreachable("Unsupported target architecture.");
135   }
136 
137   if (Args.hasArg(options::OPT_mwindows)) {
138     CmdArgs.push_back("--subsystem");
139     CmdArgs.push_back("windows");
140   } else if (Args.hasArg(options::OPT_mconsole)) {
141     CmdArgs.push_back("--subsystem");
142     CmdArgs.push_back("console");
143   }
144 
145   if (Args.hasArg(options::OPT_mdll))
146     CmdArgs.push_back("--dll");
147   else if (Args.hasArg(options::OPT_shared))
148     CmdArgs.push_back("--shared");
149   if (Args.hasArg(options::OPT_static))
150     CmdArgs.push_back("-Bstatic");
151   else
152     CmdArgs.push_back("-Bdynamic");
153   if (Args.hasArg(options::OPT_mdll) || Args.hasArg(options::OPT_shared)) {
154     CmdArgs.push_back("-e");
155     if (TC.getArch() == llvm::Triple::x86)
156       CmdArgs.push_back("_DllMainCRTStartup@12");
157     else
158       CmdArgs.push_back("DllMainCRTStartup");
159     CmdArgs.push_back("--enable-auto-image-base");
160   }
161 
162   CmdArgs.push_back("-o");
163   CmdArgs.push_back(Output.getFilename());
164 
165   Args.AddAllArgs(CmdArgs, options::OPT_e);
166   // FIXME: add -N, -n flags
167   Args.AddLastArg(CmdArgs, options::OPT_r);
168   Args.AddLastArg(CmdArgs, options::OPT_s);
169   Args.AddLastArg(CmdArgs, options::OPT_t);
170   Args.AddAllArgs(CmdArgs, options::OPT_u_Group);
171   Args.AddLastArg(CmdArgs, options::OPT_Z_Flag);
172 
173   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
174     if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_mdll)) {
175       CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("dllcrt2.o")));
176     } else {
177       if (Args.hasArg(options::OPT_municode))
178         CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crt2u.o")));
179       else
180         CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crt2.o")));
181     }
182     if (Args.hasArg(options::OPT_pg))
183       CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("gcrt2.o")));
184     CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));
185   }
186 
187   Args.AddAllArgs(CmdArgs, options::OPT_L);
188   TC.AddFilePathLibArgs(Args, CmdArgs);
189   AddLinkerInputs(TC, Inputs, Args, CmdArgs, JA);
190 
191   // TODO: Add profile stuff here
192 
193   if (TC.ShouldLinkCXXStdlib(Args)) {
194     bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
195                                !Args.hasArg(options::OPT_static);
196     if (OnlyLibstdcxxStatic)
197       CmdArgs.push_back("-Bstatic");
198     TC.AddCXXStdlibLibArgs(Args, CmdArgs);
199     if (OnlyLibstdcxxStatic)
200       CmdArgs.push_back("-Bdynamic");
201   }
202 
203   bool HasWindowsApp = false;
204   for (auto Lib : Args.getAllArgValues(options::OPT_l)) {
205     if (Lib == "windowsapp") {
206       HasWindowsApp = true;
207       break;
208     }
209   }
210 
211   if (!Args.hasArg(options::OPT_nostdlib)) {
212     if (!Args.hasArg(options::OPT_nodefaultlibs)) {
213       if (Args.hasArg(options::OPT_static))
214         CmdArgs.push_back("--start-group");
215 
216       if (Args.hasArg(options::OPT_fstack_protector) ||
217           Args.hasArg(options::OPT_fstack_protector_strong) ||
218           Args.hasArg(options::OPT_fstack_protector_all)) {
219         CmdArgs.push_back("-lssp_nonshared");
220         CmdArgs.push_back("-lssp");
221       }
222 
223       if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,
224                        options::OPT_fno_openmp, false)) {
225         switch (TC.getDriver().getOpenMPRuntime(Args)) {
226         case Driver::OMPRT_OMP:
227           CmdArgs.push_back("-lomp");
228           break;
229         case Driver::OMPRT_IOMP5:
230           CmdArgs.push_back("-liomp5md");
231           break;
232         case Driver::OMPRT_GOMP:
233           CmdArgs.push_back("-lgomp");
234           break;
235         case Driver::OMPRT_Unknown:
236           // Already diagnosed.
237           break;
238         }
239       }
240 
241       AddLibGCC(Args, CmdArgs);
242 
243       if (Args.hasArg(options::OPT_pg))
244         CmdArgs.push_back("-lgmon");
245 
246       if (Args.hasArg(options::OPT_pthread))
247         CmdArgs.push_back("-lpthread");
248 
249       if (Sanitize.needsAsanRt()) {
250         // MinGW always links against a shared MSVCRT.
251         CmdArgs.push_back(TC.getCompilerRTArgString(Args, "asan_dynamic",
252                                                     ToolChain::FT_Shared));
253         CmdArgs.push_back(
254             TC.getCompilerRTArgString(Args, "asan_dynamic_runtime_thunk"));
255         CmdArgs.push_back("--require-defined");
256         CmdArgs.push_back(TC.getArch() == llvm::Triple::x86
257                               ? "___asan_seh_interceptor"
258                               : "__asan_seh_interceptor");
259         // Make sure the linker consider all object files from the dynamic
260         // runtime thunk.
261         CmdArgs.push_back("--whole-archive");
262         CmdArgs.push_back(
263             TC.getCompilerRTArgString(Args, "asan_dynamic_runtime_thunk"));
264         CmdArgs.push_back("--no-whole-archive");
265       }
266 
267       TC.addProfileRTLibs(Args, CmdArgs);
268 
269       if (!HasWindowsApp) {
270         // Add system libraries. If linking to libwindowsapp.a, that import
271         // library replaces all these and we shouldn't accidentally try to
272         // link to the normal desktop mode dlls.
273         if (Args.hasArg(options::OPT_mwindows)) {
274           CmdArgs.push_back("-lgdi32");
275           CmdArgs.push_back("-lcomdlg32");
276         }
277         CmdArgs.push_back("-ladvapi32");
278         CmdArgs.push_back("-lshell32");
279         CmdArgs.push_back("-luser32");
280         CmdArgs.push_back("-lkernel32");
281       }
282 
283       if (Args.hasArg(options::OPT_static))
284         CmdArgs.push_back("--end-group");
285       else
286         AddLibGCC(Args, CmdArgs);
287     }
288 
289     if (!Args.hasArg(options::OPT_nostartfiles)) {
290       // Add crtfastmath.o if available and fast math is enabled.
291       TC.AddFastMathRuntimeIfAvailable(Args, CmdArgs);
292 
293       CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
294     }
295   }
296   const char *Exec = Args.MakeArgString(TC.GetLinkerPath());
297   C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
298 }
299 
300 // Simplified from Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple.
findGccVersion(StringRef LibDir,std::string & GccLibDir,std::string & Ver)301 static bool findGccVersion(StringRef LibDir, std::string &GccLibDir,
302                            std::string &Ver) {
303   auto Version = toolchains::Generic_GCC::GCCVersion::Parse("0.0.0");
304   std::error_code EC;
305   for (llvm::sys::fs::directory_iterator LI(LibDir, EC), LE; !EC && LI != LE;
306        LI = LI.increment(EC)) {
307     StringRef VersionText = llvm::sys::path::filename(LI->path());
308     auto CandidateVersion =
309         toolchains::Generic_GCC::GCCVersion::Parse(VersionText);
310     if (CandidateVersion.Major == -1)
311       continue;
312     if (CandidateVersion <= Version)
313       continue;
314     Ver = VersionText;
315     GccLibDir = LI->path();
316   }
317   return Ver.size();
318 }
319 
findGccLibDir()320 void toolchains::MinGW::findGccLibDir() {
321   llvm::SmallVector<llvm::SmallString<32>, 2> Archs;
322   Archs.emplace_back(getTriple().getArchName());
323   Archs[0] += "-w64-mingw32";
324   Archs.emplace_back("mingw32");
325   if (Arch.empty())
326     Arch = Archs[0].str();
327   // lib: Arch Linux, Ubuntu, Windows
328   // lib64: openSUSE Linux
329   for (StringRef CandidateLib : {"lib", "lib64"}) {
330     for (StringRef CandidateArch : Archs) {
331       llvm::SmallString<1024> LibDir(Base);
332       llvm::sys::path::append(LibDir, CandidateLib, "gcc", CandidateArch);
333       if (findGccVersion(LibDir, GccLibDir, Ver)) {
334         Arch = CandidateArch;
335         return;
336       }
337     }
338   }
339 }
340 
findGcc()341 llvm::ErrorOr<std::string> toolchains::MinGW::findGcc() {
342   llvm::SmallVector<llvm::SmallString<32>, 2> Gccs;
343   Gccs.emplace_back(getTriple().getArchName());
344   Gccs[0] += "-w64-mingw32-gcc";
345   Gccs.emplace_back("mingw32-gcc");
346   // Please do not add "gcc" here
347   for (StringRef CandidateGcc : Gccs)
348     if (llvm::ErrorOr<std::string> GPPName = llvm::sys::findProgramByName(CandidateGcc))
349       return GPPName;
350   return make_error_code(std::errc::no_such_file_or_directory);
351 }
352 
findClangRelativeSysroot()353 llvm::ErrorOr<std::string> toolchains::MinGW::findClangRelativeSysroot() {
354   llvm::SmallVector<llvm::SmallString<32>, 2> Subdirs;
355   Subdirs.emplace_back(getTriple().str());
356   Subdirs.emplace_back(getTriple().getArchName());
357   Subdirs[1] += "-w64-mingw32";
358   StringRef ClangRoot =
359       llvm::sys::path::parent_path(getDriver().getInstalledDir());
360   StringRef Sep = llvm::sys::path::get_separator();
361   for (StringRef CandidateSubdir : Subdirs) {
362     if (llvm::sys::fs::is_directory(ClangRoot + Sep + CandidateSubdir)) {
363       Arch = CandidateSubdir;
364       return (ClangRoot + Sep + CandidateSubdir).str();
365     }
366   }
367   return make_error_code(std::errc::no_such_file_or_directory);
368 }
369 
MinGW(const Driver & D,const llvm::Triple & Triple,const ArgList & Args)370 toolchains::MinGW::MinGW(const Driver &D, const llvm::Triple &Triple,
371                          const ArgList &Args)
372     : ToolChain(D, Triple, Args), CudaInstallation(D, Triple, Args) {
373   getProgramPaths().push_back(getDriver().getInstalledDir());
374 
375   if (getDriver().SysRoot.size())
376     Base = getDriver().SysRoot;
377   // Look for <clang-bin>/../<triplet>; if found, use <clang-bin>/.. as the
378   // base as it could still be a base for a gcc setup with libgcc.
379   else if (llvm::ErrorOr<std::string> TargetSubdir = findClangRelativeSysroot())
380     Base = llvm::sys::path::parent_path(TargetSubdir.get());
381   else if (llvm::ErrorOr<std::string> GPPName = findGcc())
382     Base = llvm::sys::path::parent_path(
383         llvm::sys::path::parent_path(GPPName.get()));
384   else
385     Base = llvm::sys::path::parent_path(getDriver().getInstalledDir());
386 
387   Base += llvm::sys::path::get_separator();
388   findGccLibDir();
389   // GccLibDir must precede Base/lib so that the
390   // correct crtbegin.o ,cetend.o would be found.
391   getFilePaths().push_back(GccLibDir);
392   getFilePaths().push_back(
393       (Base + Arch + llvm::sys::path::get_separator() + "lib").str());
394   getFilePaths().push_back(Base + "lib");
395   // openSUSE
396   getFilePaths().push_back(Base + Arch + "/sys-root/mingw/lib");
397 
398   NativeLLVMSupport =
399       Args.getLastArgValue(options::OPT_fuse_ld_EQ, CLANG_DEFAULT_LINKER)
400           .equals_lower("lld");
401 }
402 
IsIntegratedAssemblerDefault() const403 bool toolchains::MinGW::IsIntegratedAssemblerDefault() const { return true; }
404 
getTool(Action::ActionClass AC) const405 Tool *toolchains::MinGW::getTool(Action::ActionClass AC) const {
406   switch (AC) {
407   case Action::PreprocessJobClass:
408     if (!Preprocessor)
409       Preprocessor.reset(new tools::gcc::Preprocessor(*this));
410     return Preprocessor.get();
411   case Action::CompileJobClass:
412     if (!Compiler)
413       Compiler.reset(new tools::gcc::Compiler(*this));
414     return Compiler.get();
415   default:
416     return ToolChain::getTool(AC);
417   }
418 }
419 
buildAssembler() const420 Tool *toolchains::MinGW::buildAssembler() const {
421   return new tools::MinGW::Assembler(*this);
422 }
423 
buildLinker() const424 Tool *toolchains::MinGW::buildLinker() const {
425   return new tools::MinGW::Linker(*this);
426 }
427 
HasNativeLLVMSupport() const428 bool toolchains::MinGW::HasNativeLLVMSupport() const {
429   return NativeLLVMSupport;
430 }
431 
IsUnwindTablesDefault(const ArgList & Args) const432 bool toolchains::MinGW::IsUnwindTablesDefault(const ArgList &Args) const {
433   Arg *ExceptionArg = Args.getLastArg(options::OPT_fsjlj_exceptions,
434                                       options::OPT_fseh_exceptions,
435                                       options::OPT_fdwarf_exceptions);
436   if (ExceptionArg &&
437       ExceptionArg->getOption().matches(options::OPT_fseh_exceptions))
438     return true;
439   return getArch() == llvm::Triple::x86_64 ||
440          getArch() == llvm::Triple::aarch64;
441 }
442 
isPICDefault() const443 bool toolchains::MinGW::isPICDefault() const {
444   return getArch() == llvm::Triple::x86_64;
445 }
446 
isPIEDefault() const447 bool toolchains::MinGW::isPIEDefault() const { return false; }
448 
isPICDefaultForced() const449 bool toolchains::MinGW::isPICDefaultForced() const {
450   return getArch() == llvm::Triple::x86_64;
451 }
452 
453 llvm::ExceptionHandling
GetExceptionModel(const ArgList & Args) const454 toolchains::MinGW::GetExceptionModel(const ArgList &Args) const {
455   if (getArch() == llvm::Triple::x86_64 || getArch() == llvm::Triple::aarch64)
456     return llvm::ExceptionHandling::WinEH;
457   return llvm::ExceptionHandling::DwarfCFI;
458 }
459 
getSupportedSanitizers() const460 SanitizerMask toolchains::MinGW::getSupportedSanitizers() const {
461   SanitizerMask Res = ToolChain::getSupportedSanitizers();
462   Res |= SanitizerKind::Address;
463   Res |= SanitizerKind::PointerCompare;
464   Res |= SanitizerKind::PointerSubtract;
465   return Res;
466 }
467 
AddCudaIncludeArgs(const ArgList & DriverArgs,ArgStringList & CC1Args) const468 void toolchains::MinGW::AddCudaIncludeArgs(const ArgList &DriverArgs,
469                                            ArgStringList &CC1Args) const {
470   CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
471 }
472 
printVerboseInfo(raw_ostream & OS) const473 void toolchains::MinGW::printVerboseInfo(raw_ostream &OS) const {
474   CudaInstallation.print(OS);
475 }
476 
477 // Include directories for various hosts:
478 
479 // Windows, mingw.org
480 // c:\mingw\lib\gcc\mingw32\4.8.1\include\c++
481 // c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\mingw32
482 // c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\backward
483 // c:\mingw\include
484 // c:\mingw\mingw32\include
485 
486 // Windows, mingw-w64 mingw-builds
487 // c:\mingw32\i686-w64-mingw32\include
488 // c:\mingw32\i686-w64-mingw32\include\c++
489 // c:\mingw32\i686-w64-mingw32\include\c++\i686-w64-mingw32
490 // c:\mingw32\i686-w64-mingw32\include\c++\backward
491 
492 // Windows, mingw-w64 msys2
493 // c:\msys64\mingw32\include
494 // c:\msys64\mingw32\i686-w64-mingw32\include
495 // c:\msys64\mingw32\include\c++\4.9.2
496 // c:\msys64\mingw32\include\c++\4.9.2\i686-w64-mingw32
497 // c:\msys64\mingw32\include\c++\4.9.2\backward
498 
499 // openSUSE
500 // /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++
501 // /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++/x86_64-w64-mingw32
502 // /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++/backward
503 // /usr/x86_64-w64-mingw32/sys-root/mingw/include
504 
505 // Arch Linux
506 // /usr/i686-w64-mingw32/include/c++/5.1.0
507 // /usr/i686-w64-mingw32/include/c++/5.1.0/i686-w64-mingw32
508 // /usr/i686-w64-mingw32/include/c++/5.1.0/backward
509 // /usr/i686-w64-mingw32/include
510 
511 // Ubuntu
512 // /usr/include/c++/4.8
513 // /usr/include/c++/4.8/x86_64-w64-mingw32
514 // /usr/include/c++/4.8/backward
515 // /usr/x86_64-w64-mingw32/include
516 
AddClangSystemIncludeArgs(const ArgList & DriverArgs,ArgStringList & CC1Args) const517 void toolchains::MinGW::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
518                                                   ArgStringList &CC1Args) const {
519   if (DriverArgs.hasArg(options::OPT_nostdinc))
520     return;
521 
522   if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
523     SmallString<1024> P(getDriver().ResourceDir);
524     llvm::sys::path::append(P, "include");
525     addSystemInclude(DriverArgs, CC1Args, P.str());
526   }
527 
528   if (DriverArgs.hasArg(options::OPT_nostdlibinc))
529     return;
530 
531   if (GetRuntimeLibType(DriverArgs) == ToolChain::RLT_Libgcc) {
532     // openSUSE
533     addSystemInclude(DriverArgs, CC1Args,
534                      Base + Arch + "/sys-root/mingw/include");
535   }
536 
537   addSystemInclude(DriverArgs, CC1Args,
538                    Base + Arch + llvm::sys::path::get_separator() + "include");
539   addSystemInclude(DriverArgs, CC1Args, Base + "include");
540 }
541 
AddClangCXXStdlibIncludeArgs(const ArgList & DriverArgs,ArgStringList & CC1Args) const542 void toolchains::MinGW::AddClangCXXStdlibIncludeArgs(
543     const ArgList &DriverArgs, ArgStringList &CC1Args) const {
544   if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
545       DriverArgs.hasArg(options::OPT_nostdincxx))
546     return;
547 
548   StringRef Slash = llvm::sys::path::get_separator();
549 
550   switch (GetCXXStdlibType(DriverArgs)) {
551   case ToolChain::CST_Libcxx:
552     addSystemInclude(DriverArgs, CC1Args, Base + Arch + Slash + "include" +
553                                               Slash + "c++" + Slash + "v1");
554     addSystemInclude(DriverArgs, CC1Args,
555                      Base + "include" + Slash + "c++" + Slash + "v1");
556     break;
557 
558   case ToolChain::CST_Libstdcxx:
559     llvm::SmallVector<llvm::SmallString<1024>, 4> CppIncludeBases;
560     CppIncludeBases.emplace_back(Base);
561     llvm::sys::path::append(CppIncludeBases[0], Arch, "include", "c++");
562     CppIncludeBases.emplace_back(Base);
563     llvm::sys::path::append(CppIncludeBases[1], Arch, "include", "c++", Ver);
564     CppIncludeBases.emplace_back(Base);
565     llvm::sys::path::append(CppIncludeBases[2], "include", "c++", Ver);
566     CppIncludeBases.emplace_back(GccLibDir);
567     llvm::sys::path::append(CppIncludeBases[3], "include", "c++");
568     for (auto &CppIncludeBase : CppIncludeBases) {
569       addSystemInclude(DriverArgs, CC1Args, CppIncludeBase);
570       CppIncludeBase += Slash;
571       addSystemInclude(DriverArgs, CC1Args, CppIncludeBase + Arch);
572       addSystemInclude(DriverArgs, CC1Args, CppIncludeBase + "backward");
573     }
574     break;
575   }
576 }
577