886 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9#include "MinGW.h"10#include "clang/Config/config.h"11#include "clang/Driver/CommonArgs.h"12#include "clang/Driver/Compilation.h"13#include "clang/Driver/Driver.h"14#include "clang/Driver/InputInfo.h"15#include "clang/Driver/SanitizerArgs.h"16#include "clang/Options/Options.h"17#include "llvm/Config/llvm-config.h" // for LLVM_HOST_TRIPLE18#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 24using namespace clang::diag;25using namespace clang::driver;26using namespace clang;27using namespace llvm::opt;28 29/// MinGW Tools30void 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 61void 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 used68 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).starts_with("msvcr") ||90 StringRef(Lib).starts_with("ucrt") ||91 StringRef(Lib).starts_with("crtdll")) {92 std::string CRTLib = (llvm::Twine("-l") + Lib).str();93 // Respect the user's chosen crt variant, but still provide it94 // again as the last linker argument, because some of the libraries95 // we added above may depend on it.96 CmdArgs.push_back(Args.MakeArgStringRef(CRTLib));97 return;98 }99 }100 CmdArgs.push_back("-lmsvcrt");101}102 103void tools::MinGW::Linker::ConstructJob(Compilation &C, const JobAction &JA,104 const InputInfo &Output,105 const InputInfoList &Inputs,106 const ArgList &Args,107 const char *LinkingOutput) const {108 const ToolChain &TC = getToolChain();109 const Driver &D = TC.getDriver();110 const SanitizerArgs &Sanitize = TC.getSanitizerArgs(Args);111 112 ArgStringList CmdArgs;113 114 // Silence warning for "clang -g foo.o -o foo"115 Args.ClaimAllArgs(options::OPT_g_Group);116 // and "clang -emit-llvm foo.o -o foo"117 Args.ClaimAllArgs(options::OPT_emit_llvm);118 // and for "clang -w foo.o -o foo". Other warning options are already119 // handled somewhere else.120 Args.ClaimAllArgs(options::OPT_w);121 122 if (!D.SysRoot.empty())123 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));124 125 if (Args.hasArg(options::OPT_s))126 CmdArgs.push_back("-s");127 128 CmdArgs.push_back("-m");129 switch (TC.getArch()) {130 case llvm::Triple::x86:131 CmdArgs.push_back("i386pe");132 break;133 case llvm::Triple::x86_64:134 CmdArgs.push_back("i386pep");135 break;136 case llvm::Triple::arm:137 case llvm::Triple::thumb:138 // FIXME: this is incorrect for WinCE139 CmdArgs.push_back("thumb2pe");140 break;141 case llvm::Triple::aarch64:142 if (Args.hasArg(options::OPT_marm64x))143 CmdArgs.push_back("arm64xpe");144 else if (TC.getEffectiveTriple().isWindowsArm64EC())145 CmdArgs.push_back("arm64ecpe");146 else147 CmdArgs.push_back("arm64pe");148 break;149 case llvm::Triple::mipsel:150 CmdArgs.push_back("mipspe");151 break;152 default:153 D.Diag(diag::err_target_unknown_triple) << TC.getEffectiveTriple().str();154 }155 156 Arg *SubsysArg =157 Args.getLastArg(options::OPT_mwindows, options::OPT_mconsole);158 if (SubsysArg && SubsysArg->getOption().matches(options::OPT_mwindows)) {159 CmdArgs.push_back("--subsystem");160 CmdArgs.push_back("windows");161 } else if (SubsysArg &&162 SubsysArg->getOption().matches(options::OPT_mconsole)) {163 CmdArgs.push_back("--subsystem");164 CmdArgs.push_back("console");165 }166 167 if (Args.hasArg(options::OPT_mdll))168 CmdArgs.push_back("--dll");169 else if (Args.hasArg(options::OPT_shared))170 CmdArgs.push_back("--shared");171 if (Args.hasArg(options::OPT_static))172 CmdArgs.push_back("-Bstatic");173 else174 CmdArgs.push_back("-Bdynamic");175 if (Args.hasArg(options::OPT_mdll) || Args.hasArg(options::OPT_shared)) {176 CmdArgs.push_back("-e");177 if (TC.getArch() == llvm::Triple::x86)178 CmdArgs.push_back("_DllMainCRTStartup@12");179 else180 CmdArgs.push_back("DllMainCRTStartup");181 CmdArgs.push_back("--enable-auto-image-base");182 }183 184 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))185 CmdArgs.push_back("--no-demangle");186 187 if (!Args.hasFlag(options::OPT_fauto_import, options::OPT_fno_auto_import,188 true))189 CmdArgs.push_back("--disable-auto-import");190 191 if (Arg *A = Args.getLastArg(options::OPT_mguard_EQ)) {192 StringRef GuardArgs = A->getValue();193 if (GuardArgs == "none")194 CmdArgs.push_back("--no-guard-cf");195 else if (GuardArgs == "cf" || GuardArgs == "cf-nochecks")196 CmdArgs.push_back("--guard-cf");197 else198 D.Diag(diag::err_drv_unsupported_option_argument)199 << A->getSpelling() << GuardArgs;200 }201 202 if (Args.hasArg(options::OPT_fms_hotpatch))203 CmdArgs.push_back("--functionpadmin");204 205 CmdArgs.push_back("-o");206 const char *OutputFile = Output.getFilename();207 // GCC implicitly adds an .exe extension if it is given an output file name208 // that lacks an extension.209 // GCC used to do this only when the compiler itself runs on windows, but210 // since GCC 8 it does the same when cross compiling as well.211 if (!llvm::sys::path::has_extension(OutputFile)) {212 CmdArgs.push_back(Args.MakeArgString(Twine(OutputFile) + ".exe"));213 OutputFile = CmdArgs.back();214 } else215 CmdArgs.push_back(OutputFile);216 217 // FIXME: add -N, -n flags218 Args.AddLastArg(CmdArgs, options::OPT_r);219 Args.AddLastArg(CmdArgs, options::OPT_s);220 Args.AddLastArg(CmdArgs, options::OPT_t);221 Args.AddAllArgs(CmdArgs, options::OPT_u_Group);222 223 // Add asan_dynamic as the first import lib before other libs. This allows224 // asan to be initialized as early as possible to increase its instrumentation225 // coverage to include other user DLLs which has not been built with asan.226 if (Sanitize.needsAsanRt() && !Args.hasArg(options::OPT_nostdlib) &&227 !Args.hasArg(options::OPT_nodefaultlibs)) {228 // MinGW always links against a shared MSVCRT.229 CmdArgs.push_back(230 TC.getCompilerRTArgString(Args, "asan_dynamic", ToolChain::FT_Shared));231 }232 233 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {234 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_mdll)) {235 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("dllcrt2.o")));236 } else {237 if (Args.hasArg(options::OPT_municode))238 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crt2u.o")));239 else240 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crt2.o")));241 }242 if (Args.hasArg(options::OPT_pg))243 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("gcrt2.o")));244 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtbegin.o")));245 }246 247 Args.AddAllArgs(CmdArgs, options::OPT_L);248 TC.AddFilePathLibArgs(Args, CmdArgs);249 250 // Add the compiler-rt library directories if they exist to help251 // the linker find the various sanitizer, builtin, and profiling runtimes.252 for (const auto &LibPath : TC.getLibraryPaths()) {253 if (TC.getVFS().exists(LibPath))254 CmdArgs.push_back(Args.MakeArgString("-L" + LibPath));255 }256 auto CRTPath = TC.getCompilerRTPath();257 if (TC.getVFS().exists(CRTPath))258 CmdArgs.push_back(Args.MakeArgString("-L" + CRTPath));259 260 AddLinkerInputs(TC, Inputs, Args, CmdArgs, JA);261 262 if (D.isUsingLTO())263 addLTOOptions(TC, Args, CmdArgs, Output, Inputs,264 D.getLTOMode() == LTOK_Thin);265 266 if (C.getDriver().IsFlangMode() &&267 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {268 TC.addFortranRuntimeLibraryPath(Args, CmdArgs);269 TC.addFortranRuntimeLibs(Args, CmdArgs);270 }271 272 // TODO: Add profile stuff here273 274 if (TC.ShouldLinkCXXStdlib(Args)) {275 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&276 !Args.hasArg(options::OPT_static);277 if (OnlyLibstdcxxStatic)278 CmdArgs.push_back("-Bstatic");279 TC.AddCXXStdlibLibArgs(Args, CmdArgs);280 if (OnlyLibstdcxxStatic)281 CmdArgs.push_back("-Bdynamic");282 }283 284 bool HasWindowsApp = false;285 for (auto Lib : Args.getAllArgValues(options::OPT_l)) {286 if (Lib == "windowsapp") {287 HasWindowsApp = true;288 break;289 }290 }291 292 if (!Args.hasArg(options::OPT_nostdlib)) {293 if (!Args.hasArg(options::OPT_nodefaultlibs)) {294 if (Args.hasArg(options::OPT_static))295 CmdArgs.push_back("--start-group");296 297 if (Args.hasArg(options::OPT_fstack_protector) ||298 Args.hasArg(options::OPT_fstack_protector_strong) ||299 Args.hasArg(options::OPT_fstack_protector_all)) {300 CmdArgs.push_back("-lssp_nonshared");301 CmdArgs.push_back("-lssp");302 }303 304 if (Args.hasFlag(options::OPT_fopenmp, options::OPT_fopenmp_EQ,305 options::OPT_fno_openmp, false)) {306 switch (TC.getDriver().getOpenMPRuntime(Args)) {307 case Driver::OMPRT_OMP:308 CmdArgs.push_back("-lomp");309 break;310 case Driver::OMPRT_IOMP5:311 CmdArgs.push_back("-liomp5md");312 break;313 case Driver::OMPRT_GOMP:314 CmdArgs.push_back("-lgomp");315 break;316 case Driver::OMPRT_Unknown:317 // Already diagnosed.318 break;319 }320 }321 322 AddLibGCC(Args, CmdArgs);323 324 if (Args.hasArg(options::OPT_pg))325 CmdArgs.push_back("-lgmon");326 327 if (Args.hasArg(options::OPT_pthread))328 CmdArgs.push_back("-lpthread");329 330 if (Sanitize.needsAsanRt()) {331 // MinGW always links against a shared MSVCRT.332 CmdArgs.push_back(TC.getCompilerRTArgString(Args, "asan_dynamic",333 ToolChain::FT_Shared));334 CmdArgs.push_back(335 TC.getCompilerRTArgString(Args, "asan_dynamic_runtime_thunk"));336 CmdArgs.push_back("--require-defined");337 CmdArgs.push_back(TC.getArch() == llvm::Triple::x86338 ? "___asan_seh_interceptor"339 : "__asan_seh_interceptor");340 // Make sure the linker consider all object files from the dynamic341 // runtime thunk.342 CmdArgs.push_back("--whole-archive");343 CmdArgs.push_back(344 TC.getCompilerRTArgString(Args, "asan_dynamic_runtime_thunk"));345 CmdArgs.push_back("--no-whole-archive");346 }347 348 TC.addProfileRTLibs(Args, CmdArgs);349 350 if (!HasWindowsApp) {351 // Add system libraries. If linking to libwindowsapp.a, that import352 // library replaces all these and we shouldn't accidentally try to353 // link to the normal desktop mode dlls.354 if (Args.hasArg(options::OPT_mwindows)) {355 CmdArgs.push_back("-lgdi32");356 CmdArgs.push_back("-lcomdlg32");357 }358 CmdArgs.push_back("-ladvapi32");359 CmdArgs.push_back("-lshell32");360 CmdArgs.push_back("-luser32");361 CmdArgs.push_back("-lkernel32");362 }363 364 if (Args.hasArg(options::OPT_static)) {365 CmdArgs.push_back("--end-group");366 } else {367 AddLibGCC(Args, CmdArgs);368 if (!HasWindowsApp)369 CmdArgs.push_back("-lkernel32");370 }371 }372 373 if (!Args.hasArg(options::OPT_nostartfiles)) {374 // Add crtfastmath.o if available and fast math is enabled.375 TC.addFastMathRuntimeIfAvailable(Args, CmdArgs);376 377 CmdArgs.push_back(Args.MakeArgString(TC.GetFilePath("crtend.o")));378 }379 }380 const char *Exec = Args.MakeArgString(TC.GetLinkerPath());381 C.addCommand(std::make_unique<Command>(JA, *this,382 ResponseFileSupport::AtFileUTF8(),383 Exec, CmdArgs, Inputs, Output));384}385 386static bool isCrossCompiling(const llvm::Triple &T, bool RequireArchMatch) {387 llvm::Triple HostTriple(llvm::Triple::normalize(LLVM_HOST_TRIPLE));388 if (HostTriple.getOS() != llvm::Triple::Win32)389 return true;390 if (RequireArchMatch && HostTriple.getArch() != T.getArch())391 return true;392 return false;393}394 395// Simplified from Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple.396static bool findGccVersion(StringRef LibDir, std::string &GccLibDir,397 std::string &Ver,398 toolchains::Generic_GCC::GCCVersion &Version) {399 Version = toolchains::Generic_GCC::GCCVersion::Parse("0.0.0");400 std::error_code EC;401 for (llvm::sys::fs::directory_iterator LI(LibDir, EC), LE; !EC && LI != LE;402 LI = LI.increment(EC)) {403 StringRef VersionText = llvm::sys::path::filename(LI->path());404 auto CandidateVersion =405 toolchains::Generic_GCC::GCCVersion::Parse(VersionText);406 if (CandidateVersion.Major == -1)407 continue;408 if (CandidateVersion <= Version)409 continue;410 Version = CandidateVersion;411 Ver = std::string(VersionText);412 GccLibDir = LI->path();413 }414 return Ver.size();415}416 417static llvm::Triple getLiteralTriple(const Driver &D, const llvm::Triple &T) {418 llvm::Triple LiteralTriple(D.getTargetTriple());419 // The arch portion of the triple may be overridden by -m32/-m64.420 LiteralTriple.setArchName(T.getArchName());421 return LiteralTriple;422}423 424void toolchains::MinGW::findGccLibDir(const llvm::Triple &LiteralTriple) {425 llvm::SmallVector<llvm::SmallString<32>, 5> SubdirNames;426 SubdirNames.emplace_back(LiteralTriple.str());427 SubdirNames.emplace_back(getTriple().str());428 SubdirNames.emplace_back(getTriple().getArchName());429 SubdirNames.back() += "-w64-mingw32";430 SubdirNames.emplace_back(getTriple().getArchName());431 SubdirNames.back() += "-w64-mingw32ucrt";432 SubdirNames.emplace_back("mingw32");433 if (SubdirName.empty()) {434 SubdirName = getTriple().getArchName();435 SubdirName += "-w64-mingw32";436 }437 // lib: Arch Linux, Ubuntu, Windows438 // lib64: openSUSE Linux439 for (StringRef CandidateLib : {"lib", "lib64"}) {440 for (StringRef CandidateSysroot : SubdirNames) {441 llvm::SmallString<1024> LibDir(Base);442 llvm::sys::path::append(LibDir, CandidateLib, "gcc", CandidateSysroot);443 if (findGccVersion(LibDir, GccLibDir, Ver, GccVer)) {444 SubdirName = std::string(CandidateSysroot);445 return;446 }447 }448 }449}450 451static llvm::ErrorOr<std::string> findGcc(const llvm::Triple &LiteralTriple,452 const llvm::Triple &T) {453 llvm::SmallVector<llvm::SmallString<32>, 5> Gccs;454 Gccs.emplace_back(LiteralTriple.str());455 Gccs.back() += "-gcc";456 Gccs.emplace_back(T.str());457 Gccs.back() += "-gcc";458 Gccs.emplace_back(T.getArchName());459 Gccs.back() += "-w64-mingw32-gcc";460 Gccs.emplace_back(T.getArchName());461 Gccs.back() += "-w64-mingw32ucrt-gcc";462 Gccs.emplace_back("mingw32-gcc");463 // Please do not add "gcc" here464 for (StringRef CandidateGcc : Gccs)465 if (llvm::ErrorOr<std::string> GPPName = llvm::sys::findProgramByName(CandidateGcc))466 return GPPName;467 return make_error_code(std::errc::no_such_file_or_directory);468}469 470static llvm::ErrorOr<std::string>471findClangRelativeSysroot(const Driver &D, const llvm::Triple &LiteralTriple,472 const llvm::Triple &T, std::string &SubdirName) {473 llvm::SmallVector<llvm::SmallString<32>, 4> Subdirs;474 Subdirs.emplace_back(LiteralTriple.str());475 Subdirs.emplace_back(T.str());476 Subdirs.emplace_back(T.getArchName());477 Subdirs.back() += "-w64-mingw32";478 Subdirs.emplace_back(T.getArchName());479 Subdirs.back() += "-w64-mingw32ucrt";480 StringRef ClangRoot = llvm::sys::path::parent_path(D.Dir);481 StringRef Sep = llvm::sys::path::get_separator();482 for (StringRef CandidateSubdir : Subdirs) {483 if (llvm::sys::fs::is_directory(ClangRoot + Sep + CandidateSubdir)) {484 SubdirName = std::string(CandidateSubdir);485 return (ClangRoot + Sep + CandidateSubdir).str();486 }487 }488 return make_error_code(std::errc::no_such_file_or_directory);489}490 491static bool looksLikeMinGWSysroot(const std::string &Directory) {492 StringRef Sep = llvm::sys::path::get_separator();493 if (!llvm::sys::fs::exists(Directory + Sep + "include" + Sep + "_mingw.h"))494 return false;495 if (!llvm::sys::fs::exists(Directory + Sep + "lib" + Sep + "libkernel32.a"))496 return false;497 return true;498}499 500toolchains::MinGW::MinGW(const Driver &D, const llvm::Triple &Triple,501 const ArgList &Args)502 : ToolChain(D, Triple, Args), CudaInstallation(D, Triple, Args),503 RocmInstallation(D, Triple, Args) {504 getProgramPaths().push_back(getDriver().Dir);505 506 std::string InstallBase =507 std::string(llvm::sys::path::parent_path(getDriver().Dir));508 // The sequence for detecting a sysroot here should be kept in sync with509 // the testTriple function below.510 llvm::Triple LiteralTriple = getLiteralTriple(D, getTriple());511 if (getDriver().SysRoot.size())512 Base = getDriver().SysRoot;513 // Look for <clang-bin>/../<triplet>; if found, use <clang-bin>/.. as the514 // base as it could still be a base for a gcc setup with libgcc.515 else if (llvm::ErrorOr<std::string> TargetSubdir = findClangRelativeSysroot(516 getDriver(), LiteralTriple, getTriple(), SubdirName))517 Base = std::string(llvm::sys::path::parent_path(TargetSubdir.get()));518 // If the install base of Clang seems to have mingw sysroot files directly519 // in the toplevel include and lib directories, use this as base instead of520 // looking for a triple prefixed GCC in the path.521 else if (looksLikeMinGWSysroot(InstallBase))522 Base = InstallBase;523 else if (llvm::ErrorOr<std::string> GPPName =524 findGcc(LiteralTriple, getTriple()))525 Base = std::string(llvm::sys::path::parent_path(526 llvm::sys::path::parent_path(GPPName.get())));527 else528 Base = InstallBase;529 530 Base += llvm::sys::path::get_separator();531 findGccLibDir(LiteralTriple);532 TripleDirName = SubdirName;533 // GccLibDir must precede Base/lib so that the534 // correct crtbegin.o ,cetend.o would be found.535 getFilePaths().push_back(GccLibDir);536 537 // openSUSE/Fedora538 std::string CandidateSubdir = SubdirName + "/sys-root/mingw";539 if (getDriver().getVFS().exists(Base + CandidateSubdir))540 SubdirName = CandidateSubdir;541 542 getFilePaths().push_back(543 (Base + SubdirName + llvm::sys::path::get_separator() + "lib").str());544 545 // Gentoo546 getFilePaths().push_back(547 (Base + SubdirName + llvm::sys::path::get_separator() + "mingw/lib").str());548 549 // Only include <base>/lib if we're not cross compiling (not even for550 // windows->windows to a different arch), or if the sysroot has been set551 // (where we presume the user has pointed it at an arch specific552 // subdirectory).553 if (!::isCrossCompiling(getTriple(), /*RequireArchMatch=*/true) ||554 getDriver().SysRoot.size())555 getFilePaths().push_back(Base + "lib");556 557 NativeLLVMSupport =558 Args.getLastArgValue(options::OPT_fuse_ld_EQ, D.getPreferredLinker())559 .equals_insensitive("lld");560}561 562Tool *toolchains::MinGW::getTool(Action::ActionClass AC) const {563 switch (AC) {564 case Action::PreprocessJobClass:565 if (!Preprocessor)566 Preprocessor.reset(new tools::gcc::Preprocessor(*this));567 return Preprocessor.get();568 case Action::CompileJobClass:569 if (!Compiler)570 Compiler.reset(new tools::gcc::Compiler(*this));571 return Compiler.get();572 default:573 return ToolChain::getTool(AC);574 }575}576 577Tool *toolchains::MinGW::buildAssembler() const {578 return new tools::MinGW::Assembler(*this);579}580 581Tool *toolchains::MinGW::buildLinker() const {582 return new tools::MinGW::Linker(*this);583}584 585bool toolchains::MinGW::HasNativeLLVMSupport() const {586 return NativeLLVMSupport;587}588 589ToolChain::UnwindTableLevel590toolchains::MinGW::getDefaultUnwindTableLevel(const ArgList &Args) const {591 Arg *ExceptionArg = Args.getLastArg(options::OPT_fsjlj_exceptions,592 options::OPT_fseh_exceptions,593 options::OPT_fdwarf_exceptions);594 if (ExceptionArg &&595 ExceptionArg->getOption().matches(options::OPT_fseh_exceptions))596 return UnwindTableLevel::Asynchronous;597 598 if (getArch() == llvm::Triple::x86_64 || getArch() == llvm::Triple::arm ||599 getArch() == llvm::Triple::thumb || getArch() == llvm::Triple::aarch64)600 return UnwindTableLevel::Asynchronous;601 return UnwindTableLevel::None;602}603 604bool toolchains::MinGW::isPICDefault() const {605 return getArch() == llvm::Triple::x86_64 ||606 getArch() == llvm::Triple::aarch64;607}608 609bool toolchains::MinGW::isPIEDefault(const llvm::opt::ArgList &Args) const {610 return false;611}612 613bool toolchains::MinGW::isPICDefaultForced() const { return true; }614 615llvm::ExceptionHandling616toolchains::MinGW::GetExceptionModel(const ArgList &Args) const {617 if (getArch() == llvm::Triple::x86_64 || getArch() == llvm::Triple::aarch64 ||618 getArch() == llvm::Triple::arm || getArch() == llvm::Triple::thumb)619 return llvm::ExceptionHandling::WinEH;620 return llvm::ExceptionHandling::DwarfCFI;621}622 623SanitizerMask toolchains::MinGW::getSupportedSanitizers() const {624 SanitizerMask Res = ToolChain::getSupportedSanitizers();625 Res |= SanitizerKind::Address;626 Res |= SanitizerKind::PointerCompare;627 Res |= SanitizerKind::PointerSubtract;628 Res |= SanitizerKind::Vptr;629 return Res;630}631 632void toolchains::MinGW::AddCudaIncludeArgs(const ArgList &DriverArgs,633 ArgStringList &CC1Args) const {634 CudaInstallation->AddCudaIncludeArgs(DriverArgs, CC1Args);635}636 637void toolchains::MinGW::AddHIPIncludeArgs(const ArgList &DriverArgs,638 ArgStringList &CC1Args) const {639 RocmInstallation->AddHIPIncludeArgs(DriverArgs, CC1Args);640}641 642void toolchains::MinGW::printVerboseInfo(raw_ostream &OS) const {643 CudaInstallation->print(OS);644 RocmInstallation->print(OS);645}646 647// Include directories for various hosts:648 649// Windows, mingw.org650// c:\mingw\lib\gcc\mingw32\4.8.1\include\c++651// c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\mingw32652// c:\mingw\lib\gcc\mingw32\4.8.1\include\c++\backward653// c:\mingw\include654// c:\mingw\mingw32\include655 656// Windows, mingw-w64 mingw-builds657// c:\mingw32\i686-w64-mingw32\include658// c:\mingw32\i686-w64-mingw32\include\c++659// c:\mingw32\i686-w64-mingw32\include\c++\i686-w64-mingw32660// c:\mingw32\i686-w64-mingw32\include\c++\backward661 662// Windows, mingw-w64 msys2663// c:\msys64\mingw32\include664// c:\msys64\mingw32\i686-w64-mingw32\include665// c:\msys64\mingw32\include\c++\4.9.2666// c:\msys64\mingw32\include\c++\4.9.2\i686-w64-mingw32667// c:\msys64\mingw32\include\c++\4.9.2\backward668 669// openSUSE670// /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++671// /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++/x86_64-w64-mingw32672// /usr/lib64/gcc/x86_64-w64-mingw32/5.1.0/include/c++/backward673// /usr/x86_64-w64-mingw32/sys-root/mingw/include674 675// Arch Linux676// /usr/i686-w64-mingw32/include/c++/5.1.0677// /usr/i686-w64-mingw32/include/c++/5.1.0/i686-w64-mingw32678// /usr/i686-w64-mingw32/include/c++/5.1.0/backward679// /usr/i686-w64-mingw32/include680 681// Ubuntu682// /usr/include/c++/4.8683// /usr/include/c++/4.8/x86_64-w64-mingw32684// /usr/include/c++/4.8/backward685// /usr/x86_64-w64-mingw32/include686 687// Fedora688// /usr/x86_64-w64-mingw32ucrt/sys-root/mingw/include/c++/x86_64-w64-mingw32ucrt689// /usr/x86_64-w64-mingw32ucrt/sys-root/mingw/include/c++/backward690// /usr/x86_64-w64-mingw32ucrt/sys-root/mingw/include691// /usr/lib/gcc/x86_64-w64-mingw32ucrt/12.2.1/include-fixed692 693void toolchains::MinGW::AddClangSystemIncludeArgs(const ArgList &DriverArgs,694 ArgStringList &CC1Args) const {695 if (DriverArgs.hasArg(options::OPT_nostdinc))696 return;697 698 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {699 SmallString<1024> P(getDriver().ResourceDir);700 llvm::sys::path::append(P, "include");701 addSystemInclude(DriverArgs, CC1Args, P.str());702 }703 704 if (DriverArgs.hasArg(options::OPT_nostdlibinc))705 return;706 707 addSystemInclude(DriverArgs, CC1Args,708 Base + SubdirName + llvm::sys::path::get_separator() +709 "include");710 711 // Gentoo712 addSystemInclude(DriverArgs, CC1Args,713 Base + SubdirName + llvm::sys::path::get_separator() + "usr/include");714 715 // Only include <base>/include if we're not cross compiling (but do allow it716 // if we're on Windows and building for Windows on another architecture),717 // or if the sysroot has been set (where we presume the user has pointed it718 // at an arch specific subdirectory).719 if (!::isCrossCompiling(getTriple(), /*RequireArchMatch=*/false) ||720 getDriver().SysRoot.size())721 addSystemInclude(DriverArgs, CC1Args, Base + "include");722}723 724void toolchains::MinGW::addClangTargetOptions(725 const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args,726 Action::OffloadKind DeviceOffloadKind) const {727 if (Arg *A = DriverArgs.getLastArg(options::OPT_mguard_EQ)) {728 StringRef GuardArgs = A->getValue();729 if (GuardArgs == "none") {730 // Do nothing.731 } else if (GuardArgs == "cf") {732 // Emit CFG instrumentation and the table of address-taken functions.733 CC1Args.push_back("-cfguard");734 } else if (GuardArgs == "cf-nochecks") {735 // Emit only the table of address-taken functions.736 CC1Args.push_back("-cfguard-no-checks");737 } else {738 getDriver().Diag(diag::err_drv_unsupported_option_argument)739 << A->getSpelling() << GuardArgs;740 }741 }742 743 // Default to not enabling sized deallocation, but let user provided options744 // override it.745 //746 // If using sized deallocation, user code that invokes delete will end up747 // calling delete(void*,size_t). If the user wanted to override the748 // operator delete(void*), there may be a fallback operator749 // delete(void*,size_t) which calls the regular operator delete(void*).750 //751 // However, if the C++ standard library is linked in the form of a DLL,752 // and the fallback operator delete(void*,size_t) is within this DLL (which is753 // the case for libc++ at least) it will only redirect towards the library's754 // default operator delete(void*), not towards the user's provided operator755 // delete(void*).756 //757 // This issue can be avoided, if the fallback operators are linked statically758 // into the callers, even if the C++ standard library is linked as a DLL.759 //760 // This is meant as a temporary workaround until libc++ implements this761 // technique, which is tracked in762 // https://github.com/llvm/llvm-project/issues/96899.763 if (!DriverArgs.hasArgNoClaim(options::OPT_fsized_deallocation,764 options::OPT_fno_sized_deallocation))765 CC1Args.push_back("-fno-sized-deallocation");766 767 CC1Args.push_back("-fno-use-init-array");768 769 for (auto Opt : {options::OPT_mthreads, options::OPT_mwindows,770 options::OPT_mconsole, options::OPT_mdll}) {771 if (Arg *A = DriverArgs.getLastArgNoClaim(Opt))772 A->ignoreTargetSpecific();773 }774}775 776void toolchains::MinGW::AddClangCXXStdlibIncludeArgs(777 const ArgList &DriverArgs, ArgStringList &CC1Args) const {778 if (DriverArgs.hasArg(options::OPT_nostdinc, options::OPT_nostdlibinc,779 options::OPT_nostdincxx))780 return;781 782 StringRef Slash = llvm::sys::path::get_separator();783 784 switch (GetCXXStdlibType(DriverArgs)) {785 case ToolChain::CST_Libcxx: {786 std::string TargetDir = (Base + "include" + Slash + getTripleString() +787 Slash + "c++" + Slash + "v1")788 .str();789 if (getDriver().getVFS().exists(TargetDir))790 addSystemInclude(DriverArgs, CC1Args, TargetDir);791 addSystemInclude(DriverArgs, CC1Args,792 Base + SubdirName + Slash + "include" + Slash + "c++" +793 Slash + "v1");794 addSystemInclude(DriverArgs, CC1Args,795 Base + "include" + Slash + "c++" + Slash + "v1");796 break;797 }798 799 case ToolChain::CST_Libstdcxx:800 llvm::SmallVector<llvm::SmallString<1024>, 7> CppIncludeBases;801 CppIncludeBases.emplace_back(Base);802 llvm::sys::path::append(CppIncludeBases[0], SubdirName, "include", "c++");803 CppIncludeBases.emplace_back(Base);804 llvm::sys::path::append(CppIncludeBases[1], SubdirName, "include", "c++",805 Ver);806 CppIncludeBases.emplace_back(Base);807 llvm::sys::path::append(CppIncludeBases[2], "include", "c++", Ver);808 CppIncludeBases.emplace_back(GccLibDir);809 llvm::sys::path::append(CppIncludeBases[3], "include", "c++");810 CppIncludeBases.emplace_back(GccLibDir);811 llvm::sys::path::append(CppIncludeBases[4], "include",812 "g++-v" + GccVer.Text);813 CppIncludeBases.emplace_back(GccLibDir);814 llvm::sys::path::append(CppIncludeBases[5], "include",815 "g++-v" + GccVer.MajorStr + "." + GccVer.MinorStr);816 CppIncludeBases.emplace_back(GccLibDir);817 llvm::sys::path::append(CppIncludeBases[6], "include",818 "g++-v" + GccVer.MajorStr);819 for (auto &CppIncludeBase : CppIncludeBases) {820 addSystemInclude(DriverArgs, CC1Args, CppIncludeBase);821 CppIncludeBase += Slash;822 addSystemInclude(DriverArgs, CC1Args, CppIncludeBase + TripleDirName);823 addSystemInclude(DriverArgs, CC1Args, CppIncludeBase + "backward");824 }825 break;826 }827}828 829static bool testTriple(const Driver &D, const llvm::Triple &Triple,830 const ArgList &Args) {831 // If an explicit sysroot is set, that will be used and we shouldn't try to832 // detect anything else.833 std::string SubdirName;834 if (D.SysRoot.size())835 return true;836 llvm::Triple LiteralTriple = getLiteralTriple(D, Triple);837 std::string InstallBase = std::string(llvm::sys::path::parent_path(D.Dir));838 if (llvm::ErrorOr<std::string> TargetSubdir =839 findClangRelativeSysroot(D, LiteralTriple, Triple, SubdirName))840 return true;841 // If the install base itself looks like a mingw sysroot, we'll use that842 // - don't use any potentially unrelated gcc to influence what triple to use.843 if (looksLikeMinGWSysroot(InstallBase))844 return false;845 if (llvm::ErrorOr<std::string> GPPName = findGcc(LiteralTriple, Triple))846 return true;847 // If we neither found a colocated sysroot or a matching gcc executable,848 // conclude that we can't know if this is the correct spelling of the triple.849 return false;850}851 852static llvm::Triple adjustTriple(const Driver &D, const llvm::Triple &Triple,853 const ArgList &Args) {854 // First test if the original triple can find a sysroot with the triple855 // name.856 if (testTriple(D, Triple, Args))857 return Triple;858 llvm::SmallVector<llvm::StringRef, 3> Archs;859 // If not, test a couple other possible arch names that might be what was860 // intended.861 if (Triple.getArch() == llvm::Triple::x86) {862 Archs.emplace_back("i386");863 Archs.emplace_back("i586");864 Archs.emplace_back("i686");865 } else if (Triple.getArch() == llvm::Triple::arm ||866 Triple.getArch() == llvm::Triple::thumb) {867 Archs.emplace_back("armv7");868 }869 for (auto A : Archs) {870 llvm::Triple TestTriple(Triple);871 TestTriple.setArchName(A);872 if (testTriple(D, TestTriple, Args))873 return TestTriple;874 }875 // If none was found, just proceed with the original value.876 return Triple;877}878 879void toolchains::MinGW::fixTripleArch(const Driver &D, llvm::Triple &Triple,880 const ArgList &Args) {881 if (Triple.getArch() == llvm::Triple::x86 ||882 Triple.getArch() == llvm::Triple::arm ||883 Triple.getArch() == llvm::Triple::thumb)884 Triple = adjustTriple(D, Triple, Args);885}886