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/Driver/Compilation.h"
  14 #include "clang/Driver/Driver.h"
  15 #include "clang/Driver/DriverDiagnostic.h"
  16 #include "clang/Driver/Options.h"
  17 #include "llvm/Option/ArgList.h"
  18 #include "llvm/Support/FileSystem.h"
  19 #include "llvm/Support/Path.h"
  20 #include <system_error>
  21
  22 using namespace clang::diag;
  23 using namespace clang::driver;
  24 using namespace clang;
  25 using namespace llvm::opt;
  26
  27 /// MinGW Tools
  28 void tools::MinGW::Assembler::ConstructJob(Compilation &C, const JobAction &JA,
  29                                            const InputInfo &Output,
  30                                            const InputInfoList &Inputs,
  31                                            const ArgList &Args,
  32                                            const char *LinkingOutput) const {
  33   claimNoWarnArgs(Args);
  34   ArgStringList CmdArgs;
  35
  36   if (getToolChain().getArch() == llvm::Triple::x86) {
  37     CmdArgs.push_back("--32");
  38   } else if (getToolChain().getArch() == llvm::Triple::x86_64) {
  39     CmdArgs.push_back("--64");
  40   }
  41
  42   Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
  43
  44   CmdArgs.push_back("-o");
  45   CmdArgs.push_back(Output.getFilename());
  46
  47   for (const auto &II : Inputs)
  48     CmdArgs.push_back(II.getFilename());
  49
  50   const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
  51   C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
  52
  53   if (Args.hasArg(options::OPT_gsplit_dwarf))
  54     SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
  55                    SplitDebugName(Args, Inputs[0]));
  56 }
  57
  58 void tools::MinGW::Linker::AddLibGCC(const ArgList &Args,
  59                                      ArgStringList &CmdArgs) const {
  60   if (Args.hasArg(options::OPT_mthreads))
  61     CmdArgs.push_back("-lmingwthrd");
  62   CmdArgs.push_back("-lmingw32");
  63
  64   // Make use of compiler-rt if --rtlib option is used
  65   ToolChain::RuntimeLibType RLT = getToolChain().GetRuntimeLibType(Args);
  66   if (RLT == ToolChain::RLT_Libgcc) {
  67     bool Static = Args.hasArg(options::OPT_static_libgcc) ||
  68                   Args.hasArg(options::OPT_static);
  69     bool Shared = Args.hasArg(options::OPT_shared);
  70     bool CXX = getToolChain().getDriver().CCCIsCXX();
  71
  72     if (Static || (!CXX && !Shared)) {
  73       CmdArgs.push_back("-lgcc");
  74       CmdArgs.push_back("-lgcc_eh");
  75     } else {
  76       CmdArgs.push_back("-lgcc_s");
  77       CmdArgs.push_back("-lgcc");
  78     }
  79   } else {
  80     AddRunTimeLibs(getToolChain(), getToolChain().getDriver(), CmdArgs, Args);
  81   }
  82
  83   CmdArgs.push_back("-lmoldname");
  84   CmdArgs.push_back("-lmingwex");
  85   for (auto Lib : Args.getAllArgValues(options::OPT_l))
  86     if (StringRef(Lib).startswith("msvcr") || Lib == "ucrtbase")
  87       return;
  88   CmdArgs.push_back("-lmsvcrt");
  89 }
  90
  91 void tools::MinGW::Linker::ConstructJob(Compilation &C, const JobAction &JA,
  92                                         const InputInfo &Output,
  93                                         const InputInfoList &Inputs,
  94                                         const ArgList &Args,
  95                                         const char *LinkingOutput) const {
  96   const ToolChain &TC = getToolChain();
  97   const Driver &D = TC.getDriver();
  98   // const SanitizerArgs &Sanitize = TC.getSanitizerArgs();
  99
 100   ArgStringList CmdArgs;
 101
 102   // Silence warning for "clang -g foo.o -o foo"
 103   Args.ClaimAllArgs(options::OPT_g_Group);
 104   // and "clang -emit-llvm foo.o -o foo"
 105   Args.ClaimAllArgs(options::OPT_emit_llvm);
 106   // and for "clang -w foo.o -o foo". Other warning options are already
 107   // handled somewhere else.
 108   Args.ClaimAllArgs(options::OPT_w);
 109
 110   if (!D.SysRoot.empty())
 111     CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
 112
 113   if (Args.hasArg(options::OPT_s))
 114     CmdArgs.push_back("-s");
 115
 116   CmdArgs.push_back("-m");
 117   switch (TC.getArch()) {
 118   case llvm::Triple::x86:
 119     CmdArgs.push_back("i386pe");
 120     break;
 121   case llvm::Triple::x86_64:
 122     CmdArgs.push_back("i386pep");
 123     break;
 124   case llvm::Triple::arm:
 125   case llvm::Triple::thumb:
 126     // FIXME: this is incorrect for WinCE
 127     CmdArgs.push_back("thumb2pe");
 128     break;
 129   case llvm::Triple::aarch64:
 130     CmdArgs.push_back("arm64pe");
 131     break;
 132   default:
 133     llvm_unreachable("Unsupported target architecture.");
 134   }
 135
 136   if (Args.hasArg(options::OPT_mwindows)) {
 137     CmdArgs.push_back("--subsystem");
 138     CmdArgs.push_back("windows");
 139   } else if (Args.hasArg(options::OPT_mconsole)) {
 140     CmdArgs.push_back("--subsystem");
 141     CmdArgs.push_back("console");
 142   }
 143
 144   if (Args.hasArg(options::OPT_static))
 145     CmdArgs.push_back("-Bstatic");
 146   else {
 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     CmdArgs.push_back("-Bdynamic");
 152     if (Args.hasArg(options::OPT_mdll) || Args.hasArg(options::OPT_shared)) {
 153       CmdArgs.push_back("-e");
 154       if (TC.getArch() == llvm::Triple::x86)
 155         CmdArgs.push_back("_DllMainCRTStartup@12");
 156       else
 157         CmdArgs.push_back("DllMainCRTStartup");
 158       CmdArgs.push_back("--enable-auto-image-base");
 159     }
 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 ASan stuff here
 192
 193   // TODO: Add profile stuff here
 194
 195   if (TC.ShouldLinkCXXStdlib(Args)) {
 196     bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
 197                                !Args.hasArg(options::OPT_static);
 198     if (OnlyLibstdcxxStatic)
 199       CmdArgs.push_back("-Bstatic");
 200     TC.AddCXXStdlibLibArgs(Args, CmdArgs);
 201     if (OnlyLibstdcxxStatic)
 202       CmdArgs.push_back("-Bdynamic");
 203   }
 204
 205   if (!Args.hasArg(options::OPT_nostdlib)) {
 206     if (!Args.hasArg(options::OPT_nodefaultlibs)) {
 207       if (Args.hasArg(options::OPT_static))
 208         CmdArgs.push_back("--start-group");
 209
 210       if (Args.hasArg(options::OPT_fstack_protector) ||
 211           Args.hasArg(options::OPT_fstack_protector_strong) ||
 212           Args.hasArg(options::OPT_fstack_protector_all)) {
 213         CmdArgs.push_back("-lssp_nonshared");
 214         CmdArgs.push_back("-lssp");
 215       }
 216       if (Args.hasArg(options::OPT_fopenmp))
 217         CmdArgs.push_back("-lgomp");
 218
 219       AddLibGCC(Args, CmdArgs);
 220
 221       if (Args.hasArg(options::OPT_pg))
 222         CmdArgs.push_back("-lgmon");
 223
 224       if (Args.hasArg(options::OPT_pthread))
 225         CmdArgs.push_back("-lpthread");
 226
 227       // add system libraries
 228       if (Args.hasArg(options::OPT_mwindows)) {
 229         CmdArgs.push_back("-lgdi32");
 230         CmdArgs.push_back("-lcomdlg32");
 231       }
 232       CmdArgs.push_back("-ladvapi32");
 233       CmdArgs.push_back("-lshell32");
 234       CmdArgs.push_back("-luser32");
 235       CmdArgs.push_back("-lkernel32");
 236
 237       if (Args.hasArg(options::OPT_static))
 238         CmdArgs.push_back("--end-group");
 239       else
 240         AddLibGCC(Args, CmdArgs);
 241     }
 242
 243     if (!Args.hasArg(options::OPT_nostartfiles)) {
 244       // Add crtfastmath.o if available and fast math is enabled.
 245       TC.AddFastMathRuntimeIfAvailable(Args, CmdArgs);
 246
 247       CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));
 248     }
 249   }
 250   const char *Exec = Args.MakeArgString(TC.GetLinkerPath());
 251   C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
 252 }
 253
 254 // Simplified from Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple.
 255 static bool findGccVersion(StringRef LibDir, std::string &GccLibDir,
 256                            std::string &Ver) {
 257   auto Version = toolchains::Generic_GCC::GCCVersion::Parse("0.0.0");
 258   std::error_code EC;
 259   for (llvm::sys::fs::directory_iterator LI(LibDir, EC), LE; !EC && LI != LE;
 260        LI = LI.increment(EC)) {
 261     StringRef VersionText = llvm::sys::path::filename(LI->path());
 262     auto CandidateVersion =
 263         toolchains::Generic_GCC::GCCVersion::Parse(VersionText);
 264     if (CandidateVersion.Major == -1)
 265       continue;
 266     if (CandidateVersion <= Version)
 267       continue;
 268     Ver = VersionText;
 269     GccLibDir = LI->path();
 270   }
 271   return Ver.size();
 272 }
 273
 274 void toolchains::MinGW::findGccLibDir() {
 275   llvm::SmallVector<llvm::SmallString<32>, 2> Archs;
 276   Archs.emplace_back(getTriple().getArchName());
 277   Archs[0] += "-w64-mingw32";
 278   Archs.emplace_back("mingw32");
 279   Arch = Archs[0].str();
 280   // lib: Arch Linux, Ubuntu, Windows
 281   // lib64: openSUSE Linux
 282   for (StringRef CandidateLib : {"lib", "lib64"}) {
 283     for (StringRef CandidateArch : Archs) {
 284       llvm::SmallString<1024> LibDir(Base);
 285       llvm::sys::path::append(LibDir, CandidateLib, "gcc", CandidateArch);
 286       if (findGccVersion(LibDir, GccLibDir, Ver)) {
 287         Arch = CandidateArch;
 288         return;
 289       }
 290     }
 291   }
 292 }
 293
 294 llvm::ErrorOr<std::string> toolchains::MinGW::findGcc() {
 295   llvm::SmallVector<llvm::SmallString<32>, 2> Gccs;
 296   Gccs.emplace_back(getTriple().getArchName());
 297   Gccs[0] += "-w64-mingw32-gcc";
 298   Gccs.emplace_back("mingw32-gcc");
 299   // Please do not add "gcc" here
 300   for (StringRef CandidateGcc : Gccs)
 301     if (llvm::ErrorOr<std::string> GPPName = llvm::sys::findProgramByName(CandidateGcc))
 302       return GPPName;
 303   return make_error_code(std::errc::no_such_file_or_directory);
 304 }
 305
 306 toolchains::MinGW::MinGW(const Driver &D, const llvm::Triple &Triple,
 307                          const ArgList &Args)
 308     : ToolChain(D, Triple, Args), CudaInstallation(D, Triple, Args) {
 309   getProgramPaths().push_back(getDriver().getInstalledDir());
 310
 311   if (getDriver().SysRoot.size())
 312     Base = getDriver().SysRoot;
 313   else if (llvm::ErrorOr<std::string> GPPName = findGcc())
 314     Base = llvm::sys::path::parent_path(
 315         llvm::sys::path::parent_path(GPPName.get()));
 316   else
 317     Base = llvm::sys::path::parent_path(getDriver().getInstalledDir());
 318
 319   Base += llvm::sys::path::get_separator();
 320   findGccLibDir();
 321   // GccLibDir must precede Base/lib so that the
 322   // correct crtbegin.o ,cetend.o would be found.
 323   getFilePaths().push_back(GccLibDir);
 324   getFilePaths().push_back(
 325       (Base + Arch + llvm::sys::path::get_separator() + "lib").str());
 326   getFilePaths().push_back(Base + "lib");
 327   // openSUSE
 328   getFilePaths().push_back(Base + Arch + "/sys-root/mingw/lib");
 329 }
 330
 331 bool toolchains::MinGW::IsIntegratedAssemblerDefault() const { return true; }
 332
 333 Tool *toolchains::MinGW::getTool(Action::ActionClass AC) const {
 334   switch (AC) {
 335   case Action::PreprocessJobClass:
 336     if (!Preprocessor)
 337       Preprocessor.reset(new tools::gcc::Preprocessor(*this));
 338     return Preprocessor.get();
 339   case Action::CompileJobClass:
 340     if (!Compiler)
 341       Compiler.reset(new tools::gcc::Compiler(*this));
 342     return Compiler.get();
 343   default:
 344     return ToolChain::getTool(AC);
 345   }
 346 }
 347
 348 Tool *toolchains::MinGW::buildAssembler() const {
 349   return new tools::MinGW::Assembler(*this);
 350 }
 351
 352 Tool *toolchains::MinGW::buildLinker() const {
 353   return new tools::MinGW::Linker(*this);
 354 }
 355
 356 bool toolchains::MinGW::IsUnwindTablesDefault(const ArgList &Args) const {
 357   return getArch() == llvm::Triple::x86_64;
 358 }
 359
 360 bool toolchains::MinGW::isPICDefault() const {
 361   return getArch() == llvm::Triple::x86_64;
 362 }
 363
 364 bool toolchains::MinGW::isPIEDefault() const { return false; }
 365
 366 bool toolchains::MinGW::isPICDefaultForced() const {
 367   return getArch() == llvm::Triple::x86_64;
 368 }
 369
 370 llvm::ExceptionHandling
 371 toolchains::MinGW::GetExceptionModel(const ArgList &Args) const {
 372   if (getArch() == llvm::Triple::x86_64)
 373     return llvm::ExceptionHandling::WinEH;
 374   return llvm::ExceptionHandling::DwarfCFI;
 375 }
 376
 377 void toolchains::MinGW::AddCudaIncludeArgs(const ArgList &DriverArgs,
 378                                            ArgStringList &CC1Args) const {
 379   CudaInstallation.AddCudaIncludeArgs(DriverArgs, CC1Args);
 380 }
 381
 382 void toolchains::MinGW::printVerboseInfo(raw_ostream &OS) const {
 383   CudaInstallation.print(OS);
 384 }
 385
 386 // Include directories for various hosts:
 387
 388 // Windows, mingw.org
 389 // c:\mingw\lib\gcc\mingw32\4.8.1\include\c++
 390 // c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\mingw32
 391 // c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\backward
 392 // c:\mingw\include
 393 // c:\mingw\mingw32\include
 394
 395 // Windows, mingw-w64 mingw-builds
 396 // c:\mingw32\i686-w64-mingw32\include
 397 // c:\mingw32\i686-w64-mingw32\include\c++
 398 // c:\mingw32\i686-w64-mingw32\include\c++\i686-w64-mingw32
 399 // c:\mingw32\i686-w64-mingw32\include\c++\backward
 400
 401 // Windows, mingw-w64 msys2
 402 // c:\msys64\mingw32\include
 403 // c:\msys64\mingw32\i686-w64-mingw32\include
 404 // c:\msys64\mingw32\include\c++\4.9.2
 405 // c:\msys64\mingw32\include\c++\4.9.2\i686-w64-mingw32
 406 // c:\msys64\mingw32\include\c++\4.9.2\backward
 407
 408 // openSUSE
 409 // /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++
 410 // /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++/x86_64-w64-mingw32
 411 // /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++/backward
 412 // /usr/x86_64-w64-mingw32/sys-root/mingw/include
 413
 414 // Arch Linux
 415 // /usr/i686-w64-mingw32/include/c++/5.1.0
 416 // /usr/i686-w64-mingw32/include/c++/5.1.0/i686-w64-mingw32
 417 // /usr/i686-w64-mingw32/include/c++/5.1.0/backward
 418 // /usr/i686-w64-mingw32/include
 419
 420 // Ubuntu
 421 // /usr/include/c++/4.8
 422 // /usr/include/c++/4.8/x86_64-w64-mingw32
 423 // /usr/include/c++/4.8/backward
 424 // /usr/x86_64-w64-mingw32/include
 425
 426 void toolchains::MinGW::AddClangSystemIncludeArgs(const ArgList &DriverArgs,
 427                                                   ArgStringList &CC1Args) const {
 428   if (DriverArgs.hasArg(options::OPT_nostdinc))
 429     return;
 430
 431   if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
 432     SmallString<1024> P(getDriver().ResourceDir);
 433     llvm::sys::path::append(P, "include");
 434     addSystemInclude(DriverArgs, CC1Args, P.str());
 435   }
 436
 437   if (DriverArgs.hasArg(options::OPT_nostdlibinc))
 438     return;
 439
 440   if (GetRuntimeLibType(DriverArgs) == ToolChain::RLT_Libgcc) {
 441     // openSUSE
 442     addSystemInclude(DriverArgs, CC1Args,
 443                      Base + Arch + "/sys-root/mingw/include");
 444   }
 445
 446   addSystemInclude(DriverArgs, CC1Args,
 447                    Base + Arch + llvm::sys::path::get_separator() + "include");
 448   addSystemInclude(DriverArgs, CC1Args, Base + "include");
 449 }
 450
 451 void toolchains::MinGW::AddClangCXXStdlibIncludeArgs(
 452     const ArgList &DriverArgs, ArgStringList &CC1Args) const {
 453   if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
 454       DriverArgs.hasArg(options::OPT_nostdincxx))
 455     return;
 456
 457   switch (GetCXXStdlibType(DriverArgs)) {
 458   case ToolChain::CST_Libcxx:
 459     addSystemInclude(DriverArgs, CC1Args,
 460                      Base + "include" + llvm::sys::path::get_separator() +
 461                          "c++" + llvm::sys::path::get_separator() + "v1");
 462     break;
 463
 464   case ToolChain::CST_Libstdcxx:
 465     llvm::SmallVector<llvm::SmallString<1024>, 4> CppIncludeBases;
 466     CppIncludeBases.emplace_back(Base);
 467     llvm::sys::path::append(CppIncludeBases[0], Arch, "include", "c++");
 468     CppIncludeBases.emplace_back(Base);
 469     llvm::sys::path::append(CppIncludeBases[1], Arch, "include", "c++", Ver);
 470     CppIncludeBases.emplace_back(Base);
 471     llvm::sys::path::append(CppIncludeBases[2], "include", "c++", Ver);
 472     CppIncludeBases.emplace_back(GccLibDir);
 473     llvm::sys::path::append(CppIncludeBases[3], "include", "c++");
 474     for (auto &CppIncludeBase : CppIncludeBases) {
 475       addSystemInclude(DriverArgs, CC1Args, CppIncludeBase);
 476       CppIncludeBase += llvm::sys::path::get_separator();
 477       addSystemInclude(DriverArgs, CC1Args, CppIncludeBase + Arch);
 478       addSystemInclude(DriverArgs, CC1Args, CppIncludeBase + "backward");
 479     }
 480     break;
 481   }
 482 }