1 //===--- Gnu.cpp - Gnu Tool and ToolChain Implementations -------*- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
11 #include "Arch/Mips.h"
13 #include "Arch/RISCV.h"
14 #include "Arch/Sparc.h"
15 #include "Arch/SystemZ.h"
16 #include "CommonArgs.h"
18 #include "clang/Config/config.h" // for GCC_INSTALL_PREFIX
19 #include "clang/Driver/Compilation.h"
20 #include "clang/Driver/Driver.h"
21 #include "clang/Driver/DriverDiagnostic.h"
22 #include "clang/Driver/Options.h"
23 #include "clang/Driver/Tool.h"
24 #include "clang/Driver/ToolChain.h"
25 #include "llvm/Option/ArgList.h"
26 #include "llvm/Support/CodeGen.h"
27 #include "llvm/Support/Path.h"
28 #include "llvm/Support/TargetParser.h"
29 #include "llvm/Support/VirtualFileSystem.h"
30 #include <system_error>
32 using namespace clang::driver;
33 using namespace clang::driver::toolchains;
34 using namespace clang;
35 using namespace llvm::opt;
37 using tools::addMultilibFlag;
39 void tools::GnuTool::anchor() {}
41 static bool forwardToGCC(const Option &O) {
42 // Don't forward inputs from the original command line. They are added from
44 return O.getKind() != Option::InputClass &&
45 !O.hasFlag(options::DriverOption) && !O.hasFlag(options::LinkerInput);
48 // Switch CPU names not recognized by GNU assembler to a close CPU that it does
49 // recognize, instead of a lower march from being picked in the absence of a cpu
51 static void normalizeCPUNamesForAssembler(const ArgList &Args,
52 ArgStringList &CmdArgs) {
53 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
54 StringRef CPUArg(A->getValue());
55 if (CPUArg.equals_lower("krait"))
56 CmdArgs.push_back("-mcpu=cortex-a15");
57 else if(CPUArg.equals_lower("kryo"))
58 CmdArgs.push_back("-mcpu=cortex-a57");
60 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
64 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA,
65 const InputInfo &Output,
66 const InputInfoList &Inputs,
68 const char *LinkingOutput) const {
69 const Driver &D = getToolChain().getDriver();
70 ArgStringList CmdArgs;
72 for (const auto &A : Args) {
73 if (forwardToGCC(A->getOption())) {
74 // It is unfortunate that we have to claim here, as this means
75 // we will basically never report anything interesting for
76 // platforms using a generic gcc, even if we are just using gcc
77 // to get to the assembler.
80 // Don't forward any -g arguments to assembly steps.
81 if (isa<AssembleJobAction>(JA) &&
82 A->getOption().matches(options::OPT_g_Group))
85 // Don't forward any -W arguments to assembly and link steps.
86 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) &&
87 A->getOption().matches(options::OPT_W_Group))
90 // Don't forward -mno-unaligned-access since GCC doesn't understand
91 // it and because it doesn't affect the assembly or link steps.
92 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) &&
93 (A->getOption().matches(options::OPT_munaligned_access) ||
94 A->getOption().matches(options::OPT_mno_unaligned_access)))
97 A->render(Args, CmdArgs);
101 RenderExtraToolArgs(JA, CmdArgs);
103 // If using a driver driver, force the arch.
104 if (getToolChain().getTriple().isOSDarwin()) {
105 CmdArgs.push_back("-arch");
107 Args.MakeArgString(getToolChain().getDefaultUniversalArchName()));
110 // Try to force gcc to match the tool chain we want, if we recognize
113 // FIXME: The triple class should directly provide the information we want
115 switch (getToolChain().getArch()) {
118 case llvm::Triple::x86:
119 case llvm::Triple::ppc:
120 CmdArgs.push_back("-m32");
122 case llvm::Triple::x86_64:
123 case llvm::Triple::ppc64:
124 case llvm::Triple::ppc64le:
125 CmdArgs.push_back("-m64");
127 case llvm::Triple::sparcel:
128 CmdArgs.push_back("-EL");
132 if (Output.isFilename()) {
133 CmdArgs.push_back("-o");
134 CmdArgs.push_back(Output.getFilename());
136 assert(Output.isNothing() && "Unexpected output");
137 CmdArgs.push_back("-fsyntax-only");
140 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
142 // Only pass -x if gcc will understand it; otherwise hope gcc
143 // understands the suffix correctly. The main use case this would go
144 // wrong in is for linker inputs if they happened to have an odd
145 // suffix; really the only way to get this to happen is a command
146 // like '-x foobar a.c' which will treat a.c like a linker input.
148 // FIXME: For the linker case specifically, can we safely convert
149 // inputs into '-Wl,' options?
150 for (const auto &II : Inputs) {
151 // Don't try to pass LLVM or AST inputs to a generic gcc.
152 if (types::isLLVMIR(II.getType()))
153 D.Diag(clang::diag::err_drv_no_linker_llvm_support)
154 << getToolChain().getTripleString();
155 else if (II.getType() == types::TY_AST)
156 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString();
157 else if (II.getType() == types::TY_ModuleFile)
158 D.Diag(diag::err_drv_no_module_support)
159 << getToolChain().getTripleString();
161 if (types::canTypeBeUserSpecified(II.getType())) {
162 CmdArgs.push_back("-x");
163 CmdArgs.push_back(types::getTypeName(II.getType()));
167 CmdArgs.push_back(II.getFilename());
169 const Arg &A = II.getInputArg();
171 // Reverse translate some rewritten options.
172 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) {
173 CmdArgs.push_back("-lstdc++");
177 // Don't render as input, we need gcc to do the translations.
178 A.render(Args, CmdArgs);
182 const std::string &customGCCName = D.getCCCGenericGCCName();
184 if (!customGCCName.empty())
185 GCCName = customGCCName.c_str();
186 else if (D.CCCIsCXX()) {
191 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
192 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
195 void tools::gcc::Preprocessor::RenderExtraToolArgs(
196 const JobAction &JA, ArgStringList &CmdArgs) const {
197 CmdArgs.push_back("-E");
200 void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA,
201 ArgStringList &CmdArgs) const {
202 const Driver &D = getToolChain().getDriver();
204 switch (JA.getType()) {
205 // If -flto, etc. are present then make sure not to force assembly output.
206 case types::TY_LLVM_IR:
207 case types::TY_LTO_IR:
208 case types::TY_LLVM_BC:
209 case types::TY_LTO_BC:
210 CmdArgs.push_back("-c");
212 // We assume we've got an "integrated" assembler in that gcc will produce an
213 // object file itself.
214 case types::TY_Object:
215 CmdArgs.push_back("-c");
217 case types::TY_PP_Asm:
218 CmdArgs.push_back("-S");
220 case types::TY_Nothing:
221 CmdArgs.push_back("-fsyntax-only");
224 D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType());
228 void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA,
229 ArgStringList &CmdArgs) const {
230 // The types are (hopefully) good enough.
233 // On Arm the endianness of the output file is determined by the target and
234 // can be overridden by the pseudo-target flags '-mlittle-endian'/'-EL' and
235 // '-mbig-endian'/'-EB'. Unlike other targets the flag does not result in a
236 // normalized triple so we must handle the flag here.
237 static bool isArmBigEndian(const llvm::Triple &Triple,
238 const ArgList &Args) {
239 bool IsBigEndian = false;
240 switch (Triple.getArch()) {
241 case llvm::Triple::armeb:
242 case llvm::Triple::thumbeb:
245 case llvm::Triple::arm:
246 case llvm::Triple::thumb:
247 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
248 options::OPT_mbig_endian))
249 IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian);
257 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) {
258 switch (T.getArch()) {
259 case llvm::Triple::x86:
263 case llvm::Triple::aarch64:
264 return "aarch64linux";
265 case llvm::Triple::aarch64_be:
266 return "aarch64linuxb";
267 case llvm::Triple::arm:
268 case llvm::Triple::thumb:
269 case llvm::Triple::armeb:
270 case llvm::Triple::thumbeb:
271 return isArmBigEndian(T, Args) ? "armelfb_linux_eabi" : "armelf_linux_eabi";
272 case llvm::Triple::ppc:
273 return "elf32ppclinux";
274 case llvm::Triple::ppc64:
276 case llvm::Triple::ppc64le:
278 case llvm::Triple::riscv32:
279 return "elf32lriscv";
280 case llvm::Triple::riscv64:
281 return "elf64lriscv";
282 case llvm::Triple::sparc:
283 case llvm::Triple::sparcel:
284 return "elf32_sparc";
285 case llvm::Triple::sparcv9:
286 return "elf64_sparc";
287 case llvm::Triple::mips:
288 return "elf32btsmip";
289 case llvm::Triple::mipsel:
290 return "elf32ltsmip";
291 case llvm::Triple::mips64:
292 if (tools::mips::hasMipsAbiArg(Args, "n32") ||
293 T.getEnvironment() == llvm::Triple::GNUABIN32)
294 return "elf32btsmipn32";
295 return "elf64btsmip";
296 case llvm::Triple::mips64el:
297 if (tools::mips::hasMipsAbiArg(Args, "n32") ||
298 T.getEnvironment() == llvm::Triple::GNUABIN32)
299 return "elf32ltsmipn32";
300 return "elf64ltsmip";
301 case llvm::Triple::systemz:
303 case llvm::Triple::x86_64:
304 if (T.getEnvironment() == llvm::Triple::GNUX32)
305 return "elf32_x86_64";
312 static bool getPIE(const ArgList &Args, const toolchains::Linux &ToolChain) {
313 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_static) ||
314 Args.hasArg(options::OPT_r) || Args.hasArg(options::OPT_static_pie))
317 Arg *A = Args.getLastArg(options::OPT_pie, options::OPT_no_pie,
320 return ToolChain.isPIEDefault();
321 return A->getOption().matches(options::OPT_pie);
324 static bool getStaticPIE(const ArgList &Args,
325 const toolchains::Linux &ToolChain) {
326 bool HasStaticPIE = Args.hasArg(options::OPT_static_pie);
327 // -no-pie is an alias for -nopie. So, handling -nopie takes care of
329 if (HasStaticPIE && Args.hasArg(options::OPT_nopie)) {
330 const Driver &D = ToolChain.getDriver();
331 const llvm::opt::OptTable &Opts = D.getOpts();
332 const char *StaticPIEName = Opts.getOptionName(options::OPT_static_pie);
333 const char *NoPIEName = Opts.getOptionName(options::OPT_nopie);
334 D.Diag(diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName;
339 static bool getStatic(const ArgList &Args) {
340 return Args.hasArg(options::OPT_static) &&
341 !Args.hasArg(options::OPT_static_pie);
344 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
345 const InputInfo &Output,
346 const InputInfoList &Inputs,
348 const char *LinkingOutput) const {
349 const toolchains::Linux &ToolChain =
350 static_cast<const toolchains::Linux &>(getToolChain());
351 const Driver &D = ToolChain.getDriver();
353 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
355 const llvm::Triple::ArchType Arch = ToolChain.getArch();
356 const bool isAndroid = ToolChain.getTriple().isAndroid();
357 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
358 const bool IsPIE = getPIE(Args, ToolChain);
359 const bool IsStaticPIE = getStaticPIE(Args, ToolChain);
360 const bool IsStatic = getStatic(Args);
361 const bool HasCRTBeginEndFiles =
362 ToolChain.getTriple().hasEnvironment() ||
363 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
365 ArgStringList CmdArgs;
367 // Silence warning for "clang -g foo.o -o foo"
368 Args.ClaimAllArgs(options::OPT_g_Group);
369 // and "clang -emit-llvm foo.o -o foo"
370 Args.ClaimAllArgs(options::OPT_emit_llvm);
371 // and for "clang -w foo.o -o foo". Other warning options are already
372 // handled somewhere else.
373 Args.ClaimAllArgs(options::OPT_w);
375 if (!D.SysRoot.empty())
376 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
379 CmdArgs.push_back("-pie");
382 CmdArgs.push_back("-static");
383 CmdArgs.push_back("-pie");
384 CmdArgs.push_back("--no-dynamic-linker");
385 CmdArgs.push_back("-z");
386 CmdArgs.push_back("text");
389 if (ToolChain.isNoExecStackDefault()) {
390 CmdArgs.push_back("-z");
391 CmdArgs.push_back("noexecstack");
394 if (Args.hasArg(options::OPT_rdynamic))
395 CmdArgs.push_back("-export-dynamic");
397 if (Args.hasArg(options::OPT_s))
398 CmdArgs.push_back("-s");
400 if (Triple.isARM() || Triple.isThumb() || Triple.isAArch64()) {
401 bool IsBigEndian = isArmBigEndian(Triple, Args);
403 arm::appendBE8LinkFlag(Args, CmdArgs, Triple);
404 IsBigEndian = IsBigEndian || Arch == llvm::Triple::aarch64_be;
405 CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL");
408 // Most Android ARM64 targets should enable the linker fix for erratum
409 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
410 if (Arch == llvm::Triple::aarch64 && isAndroid) {
411 std::string CPU = getCPUName(Args, Triple);
412 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
413 CmdArgs.push_back("--fix-cortex-a53-843419");
416 // Android does not allow shared text relocations. Emit a warning if the
417 // user's code contains any.
419 CmdArgs.push_back("--warn-shared-textrel");
421 for (const auto &Opt : ToolChain.ExtraOpts)
422 CmdArgs.push_back(Opt.c_str());
424 CmdArgs.push_back("--eh-frame-hdr");
426 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) {
427 CmdArgs.push_back("-m");
428 CmdArgs.push_back(LDMOption);
430 D.Diag(diag::err_target_unknown_triple) << Triple.str();
435 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb ||
436 Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb)
437 CmdArgs.push_back("-Bstatic");
439 CmdArgs.push_back("-static");
440 } else if (Args.hasArg(options::OPT_shared)) {
441 CmdArgs.push_back("-shared");
445 if (Args.hasArg(options::OPT_rdynamic))
446 CmdArgs.push_back("-export-dynamic");
448 if (!Args.hasArg(options::OPT_shared) && !IsStaticPIE) {
449 const std::string Loader =
450 D.DyldPrefix + ToolChain.getDynamicLinker(Args);
451 CmdArgs.push_back("-dynamic-linker");
452 CmdArgs.push_back(Args.MakeArgString(Loader));
456 CmdArgs.push_back("-o");
457 CmdArgs.push_back(Output.getFilename());
459 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
460 if (!isAndroid && !IsIAMCU) {
461 const char *crt1 = nullptr;
462 if (!Args.hasArg(options::OPT_shared)) {
463 if (Args.hasArg(options::OPT_pg))
467 else if (IsStaticPIE)
473 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
475 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
479 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
480 else if (HasCRTBeginEndFiles) {
482 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
484 std::string crtbegin = ToolChain.getCompilerRT(Args, "crtbegin",
485 ToolChain::FT_Object);
486 if (ToolChain.getVFS().exists(crtbegin))
490 const char *crtbegin;
492 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
493 else if (Args.hasArg(options::OPT_shared))
494 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
495 else if (IsPIE || IsStaticPIE)
496 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
498 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
499 P = ToolChain.GetFilePath(crtbegin);
501 CmdArgs.push_back(Args.MakeArgString(P));
504 // Add crtfastmath.o if available and fast math is enabled.
505 ToolChain.AddFastMathRuntimeIfAvailable(Args, CmdArgs);
508 Args.AddAllArgs(CmdArgs, options::OPT_L);
509 Args.AddAllArgs(CmdArgs, options::OPT_u);
511 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
513 if (D.isUsingLTO()) {
514 assert(!Inputs.empty() && "Must have at least one input.");
515 AddGoldPlugin(ToolChain, Args, CmdArgs, Output, Inputs[0],
516 D.getLTOMode() == LTOK_Thin);
519 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
520 CmdArgs.push_back("--no-demangle");
522 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
523 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
524 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
525 // The profile runtime also needs access to system libraries.
526 getToolChain().addProfileRTLibs(Args, CmdArgs);
529 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
530 if (ToolChain.ShouldLinkCXXStdlib(Args)) {
531 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
532 !Args.hasArg(options::OPT_static);
533 if (OnlyLibstdcxxStatic)
534 CmdArgs.push_back("-Bstatic");
535 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
536 if (OnlyLibstdcxxStatic)
537 CmdArgs.push_back("-Bdynamic");
539 CmdArgs.push_back("-lm");
541 // Silence warnings when linking C code with a C++ '-stdlib' argument.
542 Args.ClaimAllArgs(options::OPT_stdlib_EQ);
544 if (!Args.hasArg(options::OPT_nostdlib)) {
545 if (!Args.hasArg(options::OPT_nodefaultlibs)) {
546 if (IsStatic || IsStaticPIE)
547 CmdArgs.push_back("--start-group");
549 if (NeedsSanitizerDeps)
550 linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
553 linkXRayRuntimeDeps(ToolChain, CmdArgs);
555 bool WantPthread = Args.hasArg(options::OPT_pthread) ||
556 Args.hasArg(options::OPT_pthreads);
558 // Use the static OpenMP runtime with -static-openmp
559 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) &&
560 !Args.hasArg(options::OPT_static);
562 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
563 // require librt. Most modern Linux platforms do, but some may not.
564 if (addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP,
565 JA.isHostOffloading(Action::OFK_OpenMP),
566 /* GompNeedsRT= */ true))
567 // OpenMP runtimes implies pthreads when using the GNU toolchain.
568 // FIXME: Does this really make sense for all GNU toolchains?
571 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
573 if (WantPthread && !isAndroid)
574 CmdArgs.push_back("-lpthread");
576 if (Args.hasArg(options::OPT_fsplit_stack))
577 CmdArgs.push_back("--wrap=pthread_create");
579 if (!Args.hasArg(options::OPT_nolibc))
580 CmdArgs.push_back("-lc");
582 // Add IAMCU specific libs, if needed.
584 CmdArgs.push_back("-lgloss");
586 if (IsStatic || IsStaticPIE)
587 CmdArgs.push_back("--end-group");
589 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
591 // Add IAMCU specific libs (outside the group), if needed.
593 CmdArgs.push_back("--as-needed");
594 CmdArgs.push_back("-lsoftfp");
595 CmdArgs.push_back("--no-as-needed");
599 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) {
600 if (HasCRTBeginEndFiles) {
602 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
604 std::string crtend = ToolChain.getCompilerRT(Args, "crtend",
605 ToolChain::FT_Object);
606 if (ToolChain.getVFS().exists(crtend))
611 if (Args.hasArg(options::OPT_shared))
612 crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
613 else if (IsPIE || IsStaticPIE)
614 crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
616 crtend = isAndroid ? "crtend_android.o" : "crtend.o";
617 P = ToolChain.GetFilePath(crtend);
619 CmdArgs.push_back(Args.MakeArgString(P));
622 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
626 // Add HIP offloading linker script args if required.
627 AddHIPLinkerScript(getToolChain(), C, Output, Inputs, Args, CmdArgs, JA,
630 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
631 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
634 void tools::gnutools::Assembler::ConstructJob(Compilation &C,
636 const InputInfo &Output,
637 const InputInfoList &Inputs,
639 const char *LinkingOutput) const {
640 const auto &D = getToolChain().getDriver();
642 claimNoWarnArgs(Args);
644 ArgStringList CmdArgs;
646 llvm::Reloc::Model RelocationModel;
649 std::tie(RelocationModel, PICLevel, IsPIE) =
650 ParsePICArgs(getToolChain(), Args);
652 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) {
653 if (A->getOption().getID() == options::OPT_gz) {
654 CmdArgs.push_back("--compress-debug-sections");
656 StringRef Value = A->getValue();
657 if (Value == "none" || Value == "zlib" || Value == "zlib-gnu") {
659 Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
661 D.Diag(diag::err_drv_unsupported_option_argument)
662 << A->getOption().getName() << Value;
667 if (getToolChain().isNoExecStackDefault()) {
668 CmdArgs.push_back("--noexecstack");
671 switch (getToolChain().getArch()) {
674 // Add --32/--64 to make sure we get the format we want.
675 // This is incomplete
676 case llvm::Triple::x86:
677 CmdArgs.push_back("--32");
679 case llvm::Triple::x86_64:
680 if (getToolChain().getTriple().getEnvironment() == llvm::Triple::GNUX32)
681 CmdArgs.push_back("--x32");
683 CmdArgs.push_back("--64");
685 case llvm::Triple::ppc: {
686 CmdArgs.push_back("-a32");
687 CmdArgs.push_back("-mppc");
689 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
692 case llvm::Triple::ppc64: {
693 CmdArgs.push_back("-a64");
694 CmdArgs.push_back("-mppc64");
696 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
699 case llvm::Triple::ppc64le: {
700 CmdArgs.push_back("-a64");
701 CmdArgs.push_back("-mppc64");
702 CmdArgs.push_back("-mlittle-endian");
704 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
707 case llvm::Triple::riscv32:
708 case llvm::Triple::riscv64: {
709 StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple());
710 CmdArgs.push_back("-mabi");
711 CmdArgs.push_back(ABIName.data());
712 StringRef MArchName = riscv::getRISCVArch(Args, getToolChain().getTriple());
713 CmdArgs.push_back("-march");
714 CmdArgs.push_back(MArchName.data());
717 case llvm::Triple::sparc:
718 case llvm::Triple::sparcel: {
719 CmdArgs.push_back("-32");
720 std::string CPU = getCPUName(Args, getToolChain().getTriple());
722 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
723 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
726 case llvm::Triple::sparcv9: {
727 CmdArgs.push_back("-64");
728 std::string CPU = getCPUName(Args, getToolChain().getTriple());
730 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
731 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
734 case llvm::Triple::arm:
735 case llvm::Triple::armeb:
736 case llvm::Triple::thumb:
737 case llvm::Triple::thumbeb: {
738 const llvm::Triple &Triple2 = getToolChain().getTriple();
739 CmdArgs.push_back(isArmBigEndian(Triple2, Args) ? "-EB" : "-EL");
740 switch (Triple2.getSubArch()) {
741 case llvm::Triple::ARMSubArch_v7:
742 CmdArgs.push_back("-mfpu=neon");
744 case llvm::Triple::ARMSubArch_v8:
745 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8");
751 switch (arm::getARMFloatABI(getToolChain(), Args)) {
752 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
753 case arm::FloatABI::Soft:
754 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft"));
756 case arm::FloatABI::SoftFP:
757 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp"));
759 case arm::FloatABI::Hard:
760 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard"));
764 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
765 normalizeCPUNamesForAssembler(Args, CmdArgs);
767 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ);
770 case llvm::Triple::aarch64:
771 case llvm::Triple::aarch64_be: {
773 getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL");
774 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
775 normalizeCPUNamesForAssembler(Args, CmdArgs);
779 case llvm::Triple::mips:
780 case llvm::Triple::mipsel:
781 case llvm::Triple::mips64:
782 case llvm::Triple::mips64el: {
785 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
786 ABIName = mips::getGnuCompatibleMipsABIName(ABIName);
788 CmdArgs.push_back("-march");
789 CmdArgs.push_back(CPUName.data());
791 CmdArgs.push_back("-mabi");
792 CmdArgs.push_back(ABIName.data());
794 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
795 // or -mshared (not implemented) is in effect.
796 if (RelocationModel == llvm::Reloc::Static)
797 CmdArgs.push_back("-mno-shared");
799 // LLVM doesn't support -mplt yet and acts as if it is always given.
800 // However, -mplt has no effect with the N64 ABI.
801 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls))
802 CmdArgs.push_back("-call_nonpic");
804 if (getToolChain().getTriple().isLittleEndian())
805 CmdArgs.push_back("-EL");
807 CmdArgs.push_back("-EB");
809 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) {
810 if (StringRef(A->getValue()) == "2008")
811 CmdArgs.push_back(Args.MakeArgString("-mnan=2008"));
814 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
815 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx,
816 options::OPT_mfp64)) {
818 A->render(Args, CmdArgs);
819 } else if (mips::shouldUseFPXX(
820 Args, getToolChain().getTriple(), CPUName, ABIName,
821 mips::getMipsFloatABI(getToolChain().getDriver(), Args,
822 getToolChain().getTriple())))
823 CmdArgs.push_back("-mfpxx");
825 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
826 // -mno-mips16 is actually -no-mips16.
828 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) {
829 if (A->getOption().matches(options::OPT_mips16)) {
831 A->render(Args, CmdArgs);
834 CmdArgs.push_back("-no-mips16");
838 Args.AddLastArg(CmdArgs, options::OPT_mmicromips,
839 options::OPT_mno_micromips);
840 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp);
841 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2);
843 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) {
844 // Do not use AddLastArg because not all versions of MIPS assembler
845 // support -mmsa / -mno-msa options.
846 if (A->getOption().matches(options::OPT_mmsa))
847 CmdArgs.push_back(Args.MakeArgString("-mmsa"));
850 Args.AddLastArg(CmdArgs, options::OPT_mhard_float,
851 options::OPT_msoft_float);
853 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float,
854 options::OPT_msingle_float);
856 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg,
857 options::OPT_mno_odd_spreg);
859 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
862 case llvm::Triple::systemz: {
863 // Always pass an -march option, since our default of z10 is later
864 // than the GNU assembler's default.
865 std::string CPUName = systemz::getSystemZTargetCPU(Args);
866 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName));
871 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
872 options::OPT_fdebug_prefix_map_EQ)) {
873 StringRef Map = A->getValue();
874 if (Map.find('=') == StringRef::npos)
875 D.Diag(diag::err_drv_invalid_argument_to_option)
876 << Map << A->getOption().getName();
878 CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map"));
879 CmdArgs.push_back(Args.MakeArgString(Map));
884 Args.AddAllArgs(CmdArgs, options::OPT_I);
885 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
887 CmdArgs.push_back("-o");
888 CmdArgs.push_back(Output.getFilename());
890 for (const auto &II : Inputs)
891 CmdArgs.push_back(II.getFilename());
893 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
894 C.addCommand(std::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
896 // Handle the debug info splitting at object creation time if we're
897 // creating an object.
898 // TODO: Currently only works on linux with newer objcopy.
899 if (Args.hasArg(options::OPT_gsplit_dwarf) &&
900 getToolChain().getTriple().isOSLinux())
901 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
902 SplitDebugName(Args, Inputs[0], Output));
906 // Filter to remove Multilibs that don't exist as a suffix to Path
907 class FilterNonExistent {
908 StringRef Base, File;
909 llvm::vfs::FileSystem &VFS;
912 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS)
913 : Base(Base), File(File), VFS(VFS) {}
914 bool operator()(const Multilib &M) {
915 return !VFS.exists(Base + M.gccSuffix() + File);
918 } // end anonymous namespace
920 static bool isSoftFloatABI(const ArgList &Args) {
921 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
922 options::OPT_mfloat_abi_EQ);
926 return A->getOption().matches(options::OPT_msoft_float) ||
927 (A->getOption().matches(options::OPT_mfloat_abi_EQ) &&
928 A->getValue() == StringRef("soft"));
931 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
932 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
935 static bool isMipsEL(llvm::Triple::ArchType Arch) {
936 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
939 static bool isMips16(const ArgList &Args) {
940 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16);
941 return A && A->getOption().matches(options::OPT_mips16);
944 static bool isMicroMips(const ArgList &Args) {
945 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips);
946 return A && A->getOption().matches(options::OPT_mmicromips);
949 static bool isMSP430(llvm::Triple::ArchType Arch) {
950 return Arch == llvm::Triple::msp430;
953 static Multilib makeMultilib(StringRef commonSuffix) {
954 return Multilib(commonSuffix, commonSuffix, commonSuffix);
957 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags,
958 FilterNonExistent &NonExistent,
959 DetectedMultilibs &Result) {
960 // Check for Code Sourcery toolchain multilibs
961 MultilibSet CSMipsMultilibs;
963 auto MArchMips16 = makeMultilib("/mips16").flag("+m32").flag("+mips16");
965 auto MArchMicroMips =
966 makeMultilib("/micromips").flag("+m32").flag("+mmicromips");
968 auto MArchDefault = makeMultilib("").flag("-mips16").flag("-mmicromips");
970 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
972 auto SoftFloat = makeMultilib("/soft-float").flag("+msoft-float");
974 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
977 makeMultilib("").flag("-msoft-float").flag("-mnan=2008");
979 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
981 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
983 // Note that this one's osSuffix is ""
984 auto MAbi64 = makeMultilib("")
986 .includeSuffix("/64")
993 .Either(MArchMips16, MArchMicroMips, MArchDefault)
995 .Either(SoftFloat, Nan2008, DefaultFloat)
996 .FilterOut("/micromips/nan2008")
997 .FilterOut("/mips16/nan2008")
998 .Either(BigEndian, LittleEndian)
1000 .FilterOut("/mips16.*/64")
1001 .FilterOut("/micromips.*/64")
1002 .FilterOut(NonExistent)
1003 .setIncludeDirsCallback([](const Multilib &M) {
1004 std::vector<std::string> Dirs({"/include"});
1005 if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1007 "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
1009 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include");
1014 MultilibSet DebianMipsMultilibs;
1017 Multilib().gccSuffix("/n32").includeSuffix("/n32").flag("+mabi=n32");
1019 Multilib M64 = Multilib()
1021 .includeSuffix("/64")
1026 Multilib M32 = Multilib().flag("-m64").flag("+m32").flag("-mabi=n32");
1028 DebianMipsMultilibs =
1029 MultilibSet().Either(M32, M64, MAbiN32).FilterOut(NonExistent);
1032 // Sort candidates. Toolchain that best meets the directories tree goes first.
1033 // Then select the first toolchains matches command line flags.
1034 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
1035 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
1036 std::iter_swap(Candidates, Candidates + 1);
1037 for (const MultilibSet *Candidate : Candidates) {
1038 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1039 if (Candidate == &DebianMipsMultilibs)
1040 Result.BiarchSibling = Multilib();
1041 Result.Multilibs = *Candidate;
1048 static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path,
1049 const Multilib::flags_list &Flags,
1050 FilterNonExistent &NonExistent,
1051 DetectedMultilibs &Result) {
1053 MultilibSet AndroidMipsMultilibs =
1055 .Maybe(Multilib("/mips-r2").flag("+march=mips32r2"))
1056 .Maybe(Multilib("/mips-r6").flag("+march=mips32r6"))
1057 .FilterOut(NonExistent);
1059 MultilibSet AndroidMipselMultilibs =
1061 .Either(Multilib().flag("+march=mips32"),
1062 Multilib("/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1063 Multilib("/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1064 .FilterOut(NonExistent);
1066 MultilibSet AndroidMips64elMultilibs =
1069 Multilib().flag("+march=mips64r6"),
1070 Multilib("/32/mips-r1", "", "/mips-r1").flag("+march=mips32"),
1071 Multilib("/32/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1072 Multilib("/32/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1073 .FilterOut(NonExistent);
1075 MultilibSet *MS = &AndroidMipsMultilibs;
1076 if (VFS.exists(Path + "/mips-r6"))
1077 MS = &AndroidMipselMultilibs;
1078 else if (VFS.exists(Path + "/32"))
1079 MS = &AndroidMips64elMultilibs;
1080 if (MS->select(Flags, Result.SelectedMultilib)) {
1081 Result.Multilibs = *MS;
1087 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags,
1088 FilterNonExistent &NonExistent,
1089 DetectedMultilibs &Result) {
1090 // Musl toolchain multilibs
1091 MultilibSet MuslMipsMultilibs;
1093 auto MArchMipsR2 = makeMultilib("")
1094 .osSuffix("/mips-r2-hard-musl")
1097 .flag("+march=mips32r2");
1099 auto MArchMipselR2 = makeMultilib("/mipsel-r2-hard-musl")
1102 .flag("+march=mips32r2");
1104 MuslMipsMultilibs = MultilibSet().Either(MArchMipsR2, MArchMipselR2);
1106 // Specify the callback that computes the include directories.
1107 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1108 return std::vector<std::string>(
1109 {"/../sysroot" + M.osSuffix() + "/usr/include"});
1112 if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilib)) {
1113 Result.Multilibs = MuslMipsMultilibs;
1119 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags,
1120 FilterNonExistent &NonExistent,
1121 DetectedMultilibs &Result) {
1122 // CodeScape MTI toolchain v1.2 and early.
1123 MultilibSet MtiMipsMultilibsV1;
1125 auto MArchMips32 = makeMultilib("/mips32")
1128 .flag("-mmicromips")
1129 .flag("+march=mips32");
1131 auto MArchMicroMips = makeMultilib("/micromips")
1134 .flag("+mmicromips");
1136 auto MArchMips64r2 = makeMultilib("/mips64r2")
1139 .flag("+march=mips64r2");
1141 auto MArchMips64 = makeMultilib("/mips64").flag("-m32").flag("+m64").flag(
1144 auto MArchDefault = makeMultilib("")
1147 .flag("-mmicromips")
1148 .flag("+march=mips32r2");
1150 auto Mips16 = makeMultilib("/mips16").flag("+mips16");
1152 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
1155 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1157 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
1159 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1161 auto SoftFloat = makeMultilib("/sof").flag("+msoft-float");
1163 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
1165 MtiMipsMultilibsV1 =
1167 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64,
1171 .FilterOut("/mips64/mips16")
1172 .FilterOut("/mips64r2/mips16")
1173 .FilterOut("/micromips/mips16")
1175 .FilterOut("/micromips/64")
1176 .FilterOut("/mips32/64")
1178 .FilterOut("/mips16/64")
1179 .Either(BigEndian, LittleEndian)
1182 .FilterOut(".*sof/nan2008")
1183 .FilterOut(NonExistent)
1184 .setIncludeDirsCallback([](const Multilib &M) {
1185 std::vector<std::string> Dirs({"/include"});
1186 if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1187 Dirs.push_back("/../../../../sysroot/uclibc/usr/include");
1189 Dirs.push_back("/../../../../sysroot/usr/include");
1194 // CodeScape IMG toolchain starting from v1.3.
1195 MultilibSet MtiMipsMultilibsV2;
1197 auto BeHard = makeMultilib("/mips-r2-hard")
1199 .flag("-msoft-float")
1202 auto BeSoft = makeMultilib("/mips-r2-soft")
1204 .flag("+msoft-float")
1205 .flag("-mnan=2008");
1206 auto ElHard = makeMultilib("/mipsel-r2-hard")
1208 .flag("-msoft-float")
1211 auto ElSoft = makeMultilib("/mipsel-r2-soft")
1213 .flag("+msoft-float")
1215 .flag("-mmicromips");
1216 auto BeHardNan = makeMultilib("/mips-r2-hard-nan2008")
1218 .flag("-msoft-float")
1221 auto ElHardNan = makeMultilib("/mipsel-r2-hard-nan2008")
1223 .flag("-msoft-float")
1226 .flag("-mmicromips");
1227 auto BeHardNanUclibc = makeMultilib("/mips-r2-hard-nan2008-uclibc")
1229 .flag("-msoft-float")
1232 auto ElHardNanUclibc = makeMultilib("/mipsel-r2-hard-nan2008-uclibc")
1234 .flag("-msoft-float")
1237 auto BeHardUclibc = makeMultilib("/mips-r2-hard-uclibc")
1239 .flag("-msoft-float")
1242 auto ElHardUclibc = makeMultilib("/mipsel-r2-hard-uclibc")
1244 .flag("-msoft-float")
1247 auto ElMicroHardNan = makeMultilib("/micromipsel-r2-hard-nan2008")
1249 .flag("-msoft-float")
1251 .flag("+mmicromips");
1252 auto ElMicroSoft = makeMultilib("/micromipsel-r2-soft")
1254 .flag("+msoft-float")
1256 .flag("+mmicromips");
1259 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1261 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1263 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1265 MtiMipsMultilibsV2 =
1267 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1268 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1269 ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1270 .Either(O32, N32, N64)
1271 .FilterOut(NonExistent)
1272 .setIncludeDirsCallback([](const Multilib &M) {
1273 return std::vector<std::string>({"/../../../../sysroot" +
1275 "/../usr/include"});
1277 .setFilePathsCallback([](const Multilib &M) {
1278 return std::vector<std::string>(
1279 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1282 for (auto Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1283 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1284 Result.Multilibs = *Candidate;
1291 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags,
1292 FilterNonExistent &NonExistent,
1293 DetectedMultilibs &Result) {
1294 // CodeScape IMG toolchain v1.2 and early.
1295 MultilibSet ImgMultilibsV1;
1297 auto Mips64r6 = makeMultilib("/mips64r6").flag("+m64").flag("-m32");
1299 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1302 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1308 .Maybe(LittleEndian)
1309 .FilterOut(NonExistent)
1310 .setIncludeDirsCallback([](const Multilib &M) {
1311 return std::vector<std::string>(
1312 {"/include", "/../../../../sysroot/usr/include"});
1316 // CodeScape IMG toolchain starting from v1.3.
1317 MultilibSet ImgMultilibsV2;
1319 auto BeHard = makeMultilib("/mips-r6-hard")
1321 .flag("-msoft-float")
1322 .flag("-mmicromips");
1323 auto BeSoft = makeMultilib("/mips-r6-soft")
1325 .flag("+msoft-float")
1326 .flag("-mmicromips");
1327 auto ElHard = makeMultilib("/mipsel-r6-hard")
1329 .flag("-msoft-float")
1330 .flag("-mmicromips");
1331 auto ElSoft = makeMultilib("/mipsel-r6-soft")
1333 .flag("+msoft-float")
1334 .flag("-mmicromips");
1335 auto BeMicroHard = makeMultilib("/micromips-r6-hard")
1337 .flag("-msoft-float")
1338 .flag("+mmicromips");
1339 auto BeMicroSoft = makeMultilib("/micromips-r6-soft")
1341 .flag("+msoft-float")
1342 .flag("+mmicromips");
1343 auto ElMicroHard = makeMultilib("/micromipsel-r6-hard")
1345 .flag("-msoft-float")
1346 .flag("+mmicromips");
1347 auto ElMicroSoft = makeMultilib("/micromipsel-r6-soft")
1349 .flag("+msoft-float")
1350 .flag("+mmicromips");
1353 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1355 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1357 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1361 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1362 ElMicroHard, ElMicroSoft})
1363 .Either(O32, N32, N64)
1364 .FilterOut(NonExistent)
1365 .setIncludeDirsCallback([](const Multilib &M) {
1366 return std::vector<std::string>({"/../../../../sysroot" +
1368 "/../usr/include"});
1370 .setFilePathsCallback([](const Multilib &M) {
1371 return std::vector<std::string>(
1372 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1375 for (auto Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1376 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1377 Result.Multilibs = *Candidate;
1384 bool clang::driver::findMIPSMultilibs(const Driver &D,
1385 const llvm::Triple &TargetTriple,
1386 StringRef Path, const ArgList &Args,
1387 DetectedMultilibs &Result) {
1388 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1392 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName);
1394 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1396 Multilib::flags_list Flags;
1397 addMultilibFlag(TargetTriple.isMIPS32(), "m32", Flags);
1398 addMultilibFlag(TargetTriple.isMIPS64(), "m64", Flags);
1399 addMultilibFlag(isMips16(Args), "mips16", Flags);
1400 addMultilibFlag(CPUName == "mips32", "march=mips32", Flags);
1401 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" ||
1402 CPUName == "mips32r5" || CPUName == "p5600",
1403 "march=mips32r2", Flags);
1404 addMultilibFlag(CPUName == "mips32r6", "march=mips32r6", Flags);
1405 addMultilibFlag(CPUName == "mips64", "march=mips64", Flags);
1406 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" ||
1407 CPUName == "mips64r5" || CPUName == "octeon" ||
1408 CPUName == "octeon+",
1409 "march=mips64r2", Flags);
1410 addMultilibFlag(CPUName == "mips64r6", "march=mips64r6", Flags);
1411 addMultilibFlag(isMicroMips(Args), "mmicromips", Flags);
1412 addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags);
1413 addMultilibFlag(tools::mips::isNaN2008(Args, TargetTriple), "mnan=2008",
1415 addMultilibFlag(ABIName == "n32", "mabi=n32", Flags);
1416 addMultilibFlag(ABIName == "n64", "mabi=n64", Flags);
1417 addMultilibFlag(isSoftFloatABI(Args), "msoft-float", Flags);
1418 addMultilibFlag(!isSoftFloatABI(Args), "mhard-float", Flags);
1419 addMultilibFlag(isMipsEL(TargetArch), "EL", Flags);
1420 addMultilibFlag(!isMipsEL(TargetArch), "EB", Flags);
1422 if (TargetTriple.isAndroid())
1423 return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent,
1426 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1427 TargetTriple.getOS() == llvm::Triple::Linux &&
1428 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1429 return findMipsMuslMultilibs(Flags, NonExistent, Result);
1431 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1432 TargetTriple.getOS() == llvm::Triple::Linux &&
1433 TargetTriple.isGNUEnvironment())
1434 return findMipsMtiMultilibs(Flags, NonExistent, Result);
1436 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1437 TargetTriple.getOS() == llvm::Triple::Linux &&
1438 TargetTriple.isGNUEnvironment())
1439 return findMipsImgMultilibs(Flags, NonExistent, Result);
1441 if (findMipsCsMultilibs(Flags, NonExistent, Result))
1444 // Fallback to the regular toolchain-tree structure.
1446 Result.Multilibs.push_back(Default);
1447 Result.Multilibs.FilterOut(NonExistent);
1449 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) {
1450 Result.BiarchSibling = Multilib();
1457 static void findAndroidArmMultilibs(const Driver &D,
1458 const llvm::Triple &TargetTriple,
1459 StringRef Path, const ArgList &Args,
1460 DetectedMultilibs &Result) {
1461 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1462 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1463 Multilib ArmV7Multilib = makeMultilib("/armv7-a")
1464 .flag("+march=armv7-a")
1466 Multilib ThumbMultilib = makeMultilib("/thumb")
1467 .flag("-march=armv7-a")
1469 Multilib ArmV7ThumbMultilib = makeMultilib("/armv7-a/thumb")
1470 .flag("+march=armv7-a")
1472 Multilib DefaultMultilib = makeMultilib("")
1473 .flag("-march=armv7-a")
1475 MultilibSet AndroidArmMultilibs =
1477 .Either(ThumbMultilib, ArmV7Multilib,
1478 ArmV7ThumbMultilib, DefaultMultilib)
1479 .FilterOut(NonExistent);
1481 Multilib::flags_list Flags;
1482 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ);
1483 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1484 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1485 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1486 bool IsThumbMode = IsThumbArch ||
1487 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) ||
1488 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB);
1489 bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1490 (llvm::ARM::parseArchVersion(Arch) == 7 ||
1491 (IsArmArch && Arch == "" && IsV7SubArch));
1492 addMultilibFlag(IsArmV7Mode, "march=armv7-a", Flags);
1493 addMultilibFlag(IsThumbMode, "mthumb", Flags);
1495 if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilib))
1496 Result.Multilibs = AndroidArmMultilibs;
1499 static bool findMSP430Multilibs(const Driver &D,
1500 const llvm::Triple &TargetTriple,
1501 StringRef Path, const ArgList &Args,
1502 DetectedMultilibs &Result) {
1503 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1504 Multilib MSP430Multilib = makeMultilib("/430");
1505 // FIXME: when clang starts to support msp430x ISA additional logic
1506 // to select between multilib must be implemented
1507 // Multilib MSP430xMultilib = makeMultilib("/large");
1509 Result.Multilibs.push_back(MSP430Multilib);
1510 Result.Multilibs.FilterOut(NonExistent);
1512 Multilib::flags_list Flags;
1513 if (Result.Multilibs.select(Flags, Result.SelectedMultilib))
1519 static void findRISCVBareMetalMultilibs(const Driver &D,
1520 const llvm::Triple &TargetTriple,
1521 StringRef Path, const ArgList &Args,
1522 DetectedMultilibs &Result) {
1523 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1524 struct RiscvMultilib {
1528 // currently only support the set of multilibs like riscv-gnu-toolchain does.
1529 // TODO: support MULTILIB_REUSE
1530 SmallVector<RiscvMultilib, 8> RISCVMultilibSet = {
1531 {"rv32i", "ilp32"}, {"rv32im", "ilp32"}, {"rv32iac", "ilp32"},
1532 {"rv32imac", "ilp32"}, {"rv32imafc", "ilp32f"}, {"rv64imac", "lp64"},
1533 {"rv64imafdc", "lp64d"}};
1535 std::vector<Multilib> Ms;
1536 for (auto Element : RISCVMultilibSet) {
1537 // multilib path rule is ${march}/${mabi}
1539 makeMultilib((Twine(Element.march) + "/" + Twine(Element.mabi)).str())
1540 .flag(Twine("+march=", Element.march).str())
1541 .flag(Twine("+mabi=", Element.mabi).str()));
1543 MultilibSet RISCVMultilibs =
1545 .Either(ArrayRef<Multilib>(Ms))
1546 .FilterOut(NonExistent)
1547 .setFilePathsCallback([](const Multilib &M) {
1548 return std::vector<std::string>(
1550 "/../../../../riscv64-unknown-elf/lib" + M.gccSuffix(),
1551 "/../../../../riscv32-unknown-elf/lib" + M.gccSuffix()});
1555 Multilib::flags_list Flags;
1556 llvm::StringSet<> Added_ABIs;
1557 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1558 StringRef MArch = tools::riscv::getRISCVArch(Args, TargetTriple);
1559 for (auto Element : RISCVMultilibSet) {
1560 addMultilibFlag(MArch == Element.march,
1561 Twine("march=", Element.march).str().c_str(), Flags);
1562 if (!Added_ABIs.count(Element.mabi)) {
1563 Added_ABIs.insert(Element.mabi);
1564 addMultilibFlag(ABIName == Element.mabi,
1565 Twine("mabi=", Element.mabi).str().c_str(), Flags);
1569 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib))
1570 Result.Multilibs = RISCVMultilibs;
1573 static void findRISCVMultilibs(const Driver &D,
1574 const llvm::Triple &TargetTriple, StringRef Path,
1575 const ArgList &Args, DetectedMultilibs &Result) {
1576 if (TargetTriple.getOS() == llvm::Triple::UnknownOS)
1577 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result);
1579 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1580 Multilib Ilp32 = makeMultilib("lib32/ilp32").flag("+m32").flag("+mabi=ilp32");
1582 makeMultilib("lib32/ilp32f").flag("+m32").flag("+mabi=ilp32f");
1584 makeMultilib("lib32/ilp32d").flag("+m32").flag("+mabi=ilp32d");
1585 Multilib Lp64 = makeMultilib("lib64/lp64").flag("+m64").flag("+mabi=lp64");
1586 Multilib Lp64f = makeMultilib("lib64/lp64f").flag("+m64").flag("+mabi=lp64f");
1587 Multilib Lp64d = makeMultilib("lib64/lp64d").flag("+m64").flag("+mabi=lp64d");
1588 MultilibSet RISCVMultilibs =
1590 .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d})
1591 .FilterOut(NonExistent);
1593 Multilib::flags_list Flags;
1594 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64;
1595 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1597 addMultilibFlag(!IsRV64, "m32", Flags);
1598 addMultilibFlag(IsRV64, "m64", Flags);
1599 addMultilibFlag(ABIName == "ilp32", "mabi=ilp32", Flags);
1600 addMultilibFlag(ABIName == "ilp32f", "mabi=ilp32f", Flags);
1601 addMultilibFlag(ABIName == "ilp32d", "mabi=ilp32d", Flags);
1602 addMultilibFlag(ABIName == "lp64", "mabi=lp64", Flags);
1603 addMultilibFlag(ABIName == "lp64f", "mabi=lp64f", Flags);
1604 addMultilibFlag(ABIName == "lp64d", "mabi=lp64d", Flags);
1606 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib))
1607 Result.Multilibs = RISCVMultilibs;
1610 static bool findBiarchMultilibs(const Driver &D,
1611 const llvm::Triple &TargetTriple,
1612 StringRef Path, const ArgList &Args,
1613 bool NeedsBiarchSuffix,
1614 DetectedMultilibs &Result) {
1617 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1618 // in what would normally be GCCInstallPath and put the 64-bit
1619 // libs in a subdirectory named 64. The simple logic we follow is that
1620 // *if* there is a subdirectory of the right name with crtbegin.o in it,
1621 // we use that. If not, and if not a biarch triple alias, we look for
1622 // crtbegin.o without the subdirectory.
1624 StringRef Suff64 = "/64";
1625 // Solaris uses platform-specific suffixes instead of /64.
1626 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
1627 switch (TargetTriple.getArch()) {
1628 case llvm::Triple::x86:
1629 case llvm::Triple::x86_64:
1632 case llvm::Triple::sparc:
1633 case llvm::Triple::sparcv9:
1634 Suff64 = "/sparcv9";
1641 Multilib Alt64 = Multilib()
1643 .includeSuffix(Suff64)
1647 Multilib Alt32 = Multilib()
1649 .includeSuffix("/32")
1653 Multilib Altx32 = Multilib()
1655 .includeSuffix("/x32")
1660 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
1661 FilterNonExistent NonExistent(
1662 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
1664 // Determine default multilib from: 32, 64, x32
1665 // Also handle cases such as 64 on 32, 32 on 64, etc.
1666 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
1667 const bool IsX32 = TargetTriple.getEnvironment() == llvm::Triple::GNUX32;
1668 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
1670 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
1672 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
1675 if (TargetTriple.isArch32Bit())
1676 Want = NeedsBiarchSuffix ? WANT64 : WANT32;
1678 Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
1680 Want = NeedsBiarchSuffix ? WANT32 : WANT64;
1684 Default.flag("+m32").flag("-m64").flag("-mx32");
1685 else if (Want == WANT64)
1686 Default.flag("-m32").flag("+m64").flag("-mx32");
1687 else if (Want == WANTX32)
1688 Default.flag("-m32").flag("-m64").flag("+mx32");
1692 Result.Multilibs.push_back(Default);
1693 Result.Multilibs.push_back(Alt64);
1694 Result.Multilibs.push_back(Alt32);
1695 Result.Multilibs.push_back(Altx32);
1697 Result.Multilibs.FilterOut(NonExistent);
1699 Multilib::flags_list Flags;
1700 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "m64", Flags);
1701 addMultilibFlag(TargetTriple.isArch32Bit(), "m32", Flags);
1702 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "mx32", Flags);
1704 if (!Result.Multilibs.select(Flags, Result.SelectedMultilib))
1707 if (Result.SelectedMultilib == Alt64 || Result.SelectedMultilib == Alt32 ||
1708 Result.SelectedMultilib == Altx32)
1709 Result.BiarchSibling = Default;
1714 /// Generic_GCC - A tool chain using the 'gcc' command to perform
1715 /// all subcommands; this relies on gcc translating the majority of
1716 /// command line options.
1718 /// Less-than for GCCVersion, implementing a Strict Weak Ordering.
1719 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
1721 StringRef RHSPatchSuffix) const {
1722 if (Major != RHSMajor)
1723 return Major < RHSMajor;
1724 if (Minor != RHSMinor)
1725 return Minor < RHSMinor;
1726 if (Patch != RHSPatch) {
1727 // Note that versions without a specified patch sort higher than those with
1734 // Otherwise just sort on the patch itself.
1735 return Patch < RHSPatch;
1737 if (PatchSuffix != RHSPatchSuffix) {
1738 // Sort empty suffixes higher.
1739 if (RHSPatchSuffix.empty())
1741 if (PatchSuffix.empty())
1744 // Provide a lexicographic sort to make this a total ordering.
1745 return PatchSuffix < RHSPatchSuffix;
1748 // The versions are equal.
1752 /// Parse a GCCVersion object out of a string of text.
1754 /// This is the primary means of forming GCCVersion objects.
1756 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) {
1757 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1758 std::pair<StringRef, StringRef> First = VersionText.split('.');
1759 std::pair<StringRef, StringRef> Second = First.second.split('.');
1761 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1762 if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0)
1764 GoodVersion.MajorStr = First.first.str();
1765 if (First.second.empty())
1767 StringRef MinorStr = Second.first;
1768 if (Second.second.empty()) {
1769 if (size_t EndNumber = MinorStr.find_first_not_of("0123456789")) {
1770 GoodVersion.PatchSuffix = MinorStr.substr(EndNumber);
1771 MinorStr = MinorStr.slice(0, EndNumber);
1774 if (MinorStr.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0)
1776 GoodVersion.MinorStr = MinorStr.str();
1778 // First look for a number prefix and parse that if present. Otherwise just
1779 // stash the entire patch string in the suffix, and leave the number
1780 // unspecified. This covers versions strings such as:
1781 // 5 (handled above)
1788 // And retains any patch number it finds.
1789 StringRef PatchText = Second.second;
1790 if (!PatchText.empty()) {
1791 if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) {
1792 // Try to parse the number and any suffix.
1793 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) ||
1794 GoodVersion.Patch < 0)
1796 GoodVersion.PatchSuffix = PatchText.substr(EndNumber);
1803 static llvm::StringRef getGCCToolchainDir(const ArgList &Args,
1804 llvm::StringRef SysRoot) {
1805 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain);
1807 return A->getValue();
1809 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX.
1810 // GCC_INSTALL_PREFIX specifies the gcc installation for the default
1811 // sysroot and is likely not valid with a different sysroot.
1812 if (!SysRoot.empty())
1815 return GCC_INSTALL_PREFIX;
1818 /// Initialize a GCCInstallationDetector from the driver.
1820 /// This performs all of the autodetection and sets up the various paths.
1821 /// Once constructed, a GCCInstallationDetector is essentially immutable.
1823 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
1824 /// should instead pull the target out of the driver. This is currently
1825 /// necessary because the driver doesn't store the final version of the target
1827 void Generic_GCC::GCCInstallationDetector::init(
1828 const llvm::Triple &TargetTriple, const ArgList &Args,
1829 ArrayRef<std::string> ExtraTripleAliases) {
1830 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
1831 ? TargetTriple.get64BitArchVariant()
1832 : TargetTriple.get32BitArchVariant();
1833 // The library directories which may contain GCC installations.
1834 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
1835 // The compatible GCC triples for this particular architecture.
1836 SmallVector<StringRef, 16> CandidateTripleAliases;
1837 SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
1838 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs,
1839 CandidateTripleAliases, CandidateBiarchLibDirs,
1840 CandidateBiarchTripleAliases);
1842 // Compute the set of prefixes for our search.
1843 SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(),
1844 D.PrefixDirs.end());
1846 StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot);
1847 if (GCCToolchainDir != "") {
1848 if (GCCToolchainDir.back() == '/')
1849 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
1851 Prefixes.push_back(GCCToolchainDir);
1853 // If we have a SysRoot, try that first.
1854 if (!D.SysRoot.empty()) {
1855 Prefixes.push_back(D.SysRoot);
1856 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
1859 // Then look for gcc installed alongside clang.
1860 Prefixes.push_back(D.InstalledDir + "/..");
1862 // Next, look for prefix(es) that correspond to distribution-supplied gcc
1864 if (D.SysRoot.empty()) {
1866 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
1870 // Try to respect gcc-config on Gentoo. However, do that only
1871 // if --gcc-toolchain is not provided or equal to the Gentoo install
1872 // in /usr. This avoids accidentally enforcing the system GCC version
1873 // when using a custom toolchain.
1874 if (GCCToolchainDir == "" || GCCToolchainDir == D.SysRoot + "/usr") {
1875 SmallVector<StringRef, 16> GentooTestTriples;
1876 // Try to match an exact triple as target triple first.
1877 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for
1878 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu"
1879 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching
1880 // triple x86_64-gentoo-linux-gnu is present.
1881 GentooTestTriples.push_back(TargetTriple.str());
1882 // Check rest of triples.
1883 GentooTestTriples.append(ExtraTripleAliases.begin(),
1884 ExtraTripleAliases.end());
1885 GentooTestTriples.append(CandidateTripleAliases.begin(),
1886 CandidateTripleAliases.end());
1887 if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples,
1888 CandidateBiarchTripleAliases))
1892 // Loop over the various components which exist and select the best GCC
1893 // installation available. GCC installs are ranked by version number.
1894 Version = GCCVersion::Parse("0.0.0");
1895 for (const std::string &Prefix : Prefixes) {
1896 if (!D.getVFS().exists(Prefix))
1898 for (StringRef Suffix : CandidateLibDirs) {
1899 const std::string LibDir = Prefix + Suffix.str();
1900 if (!D.getVFS().exists(LibDir))
1902 // Try to match the exact target triple first.
1903 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, TargetTriple.str());
1904 // Try rest of possible triples.
1905 for (StringRef Candidate : ExtraTripleAliases) // Try these first.
1906 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
1907 for (StringRef Candidate : CandidateTripleAliases)
1908 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
1910 for (StringRef Suffix : CandidateBiarchLibDirs) {
1911 const std::string LibDir = Prefix + Suffix.str();
1912 if (!D.getVFS().exists(LibDir))
1914 for (StringRef Candidate : CandidateBiarchTripleAliases)
1915 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate,
1916 /*NeedsBiarchSuffix=*/ true);
1921 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
1922 for (const auto &InstallPath : CandidateGCCInstallPaths)
1923 OS << "Found candidate GCC installation: " << InstallPath << "\n";
1925 if (!GCCInstallPath.empty())
1926 OS << "Selected GCC installation: " << GCCInstallPath << "\n";
1928 for (const auto &Multilib : Multilibs)
1929 OS << "Candidate multilib: " << Multilib << "\n";
1931 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault())
1932 OS << "Selected multilib: " << SelectedMultilib << "\n";
1935 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const {
1936 if (BiarchSibling.hasValue()) {
1937 M = BiarchSibling.getValue();
1943 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
1944 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes,
1945 StringRef SysRoot) {
1946 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
1947 // Solaris is a special case.
1948 // The GCC installation is under
1949 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/
1950 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with
1951 // /usr/gcc/<version> as a prefix.
1953 std::string PrefixDir = SysRoot.str() + "/usr/gcc";
1955 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC),
1957 !EC && LI != LE; LI = LI.increment(EC)) {
1958 StringRef VersionText = llvm::sys::path::filename(LI->path());
1959 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
1961 // Filter out obviously bad entries.
1962 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1))
1965 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str();
1966 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc";
1967 if (!D.getVFS().exists(CandidateLibPath))
1970 Prefixes.push_back(CandidatePrefix);
1975 // Non-Solaris is much simpler - most systems just go with "/usr".
1976 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux) {
1977 // Yet, still look for RHEL devtoolsets.
1978 Prefixes.push_back("/opt/rh/devtoolset-8/root/usr");
1979 Prefixes.push_back("/opt/rh/devtoolset-7/root/usr");
1980 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr");
1981 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr");
1982 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr");
1983 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr");
1985 Prefixes.push_back(SysRoot.str() + "/usr");
1988 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
1989 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
1990 SmallVectorImpl<StringRef> &LibDirs,
1991 SmallVectorImpl<StringRef> &TripleAliases,
1992 SmallVectorImpl<StringRef> &BiarchLibDirs,
1993 SmallVectorImpl<StringRef> &BiarchTripleAliases) {
1994 // Declare a bunch of static data sets that we'll select between below. These
1995 // are specifically designed to always refer to string literals to avoid any
1996 // lifetime or initialization issues.
1997 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
1998 static const char *const AArch64Triples[] = {
1999 "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-redhat-linux",
2000 "aarch64-suse-linux", "aarch64-linux-android"};
2001 static const char *const AArch64beLibDirs[] = {"/lib"};
2002 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu",
2003 "aarch64_be-linux-gnu"};
2005 static const char *const ARMLibDirs[] = {"/lib"};
2006 static const char *const ARMTriples[] = {"arm-linux-gnueabi",
2007 "arm-linux-androideabi"};
2008 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
2009 "armv7hl-redhat-linux-gnueabi",
2010 "armv6hl-suse-linux-gnueabi",
2011 "armv7hl-suse-linux-gnueabi"};
2012 static const char *const ARMebLibDirs[] = {"/lib"};
2013 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi",
2014 "armeb-linux-androideabi"};
2015 static const char *const ARMebHFTriples[] = {
2016 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
2018 static const char *const AVRLibDirs[] = {"/lib"};
2019 static const char *const AVRTriples[] = {"avr"};
2021 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
2022 static const char *const X86_64Triples[] = {
2023 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
2024 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
2025 "x86_64-redhat-linux", "x86_64-suse-linux",
2026 "x86_64-manbo-linux-gnu", "x86_64-linux-gnu",
2027 "x86_64-slackware-linux", "x86_64-unknown-linux",
2028 "x86_64-amazon-linux", "x86_64-linux-android"};
2029 static const char *const X32LibDirs[] = {"/libx32"};
2030 static const char *const X86LibDirs[] = {"/lib32", "/lib"};
2031 static const char *const X86Triples[] = {
2032 "i686-linux-gnu", "i686-pc-linux-gnu", "i486-linux-gnu",
2033 "i386-linux-gnu", "i386-redhat-linux6E", "i686-redhat-linux",
2034 "i586-redhat-linux", "i386-redhat-linux", "i586-suse-linux",
2035 "i486-slackware-linux", "i686-montavista-linux", "i586-linux-gnu",
2036 "i686-linux-android", "i386-gnu", "i486-gnu",
2037 "i586-gnu", "i686-gnu"};
2039 static const char *const MIPSLibDirs[] = {"/lib"};
2040 static const char *const MIPSTriples[] = {
2041 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu",
2042 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"};
2043 static const char *const MIPSELLibDirs[] = {"/lib"};
2044 static const char *const MIPSELTriples[] = {
2045 "mipsel-linux-gnu", "mips-img-linux-gnu", "mipsisa32r6el-linux-gnu",
2046 "mipsel-linux-android"};
2048 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
2049 static const char *const MIPS64Triples[] = {
2050 "mips64-linux-gnu", "mips-mti-linux-gnu",
2051 "mips-img-linux-gnu", "mips64-linux-gnuabi64",
2052 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"};
2053 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
2054 static const char *const MIPS64ELTriples[] = {
2055 "mips64el-linux-gnu", "mips-mti-linux-gnu",
2056 "mips-img-linux-gnu", "mips64el-linux-gnuabi64",
2057 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64",
2058 "mips64el-linux-android"};
2060 static const char *const MIPSN32LibDirs[] = {"/lib32"};
2061 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32",
2062 "mipsisa64r6-linux-gnuabin32"};
2063 static const char *const MIPSN32ELLibDirs[] = {"/lib32"};
2064 static const char *const MIPSN32ELTriples[] = {
2065 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"};
2067 static const char *const MSP430LibDirs[] = {"/lib"};
2068 static const char *const MSP430Triples[] = {"msp430-elf"};
2070 static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
2071 static const char *const PPCTriples[] = {
2072 "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe",
2073 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a
2074 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux".
2075 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"};
2076 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
2077 static const char *const PPC64Triples[] = {
2078 "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu",
2079 "powerpc64-suse-linux", "ppc64-redhat-linux"};
2080 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
2081 static const char *const PPC64LETriples[] = {
2082 "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu",
2083 "powerpc64le-suse-linux", "ppc64le-redhat-linux"};
2085 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"};
2086 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu",
2087 "riscv32-linux-gnu",
2088 "riscv32-unknown-elf"};
2089 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"};
2090 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu",
2091 "riscv64-linux-gnu",
2092 "riscv64-unknown-elf",
2093 "riscv64-suse-linux"};
2095 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
2096 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
2097 "sparcv8-linux-gnu"};
2098 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
2099 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
2100 "sparcv9-linux-gnu"};
2102 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
2103 static const char *const SystemZTriples[] = {
2104 "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu",
2105 "s390x-suse-linux", "s390x-redhat-linux"};
2111 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
2112 static const char *const SolarisLibDirs[] = {"/lib"};
2113 static const char *const SolarisSparcV8Triples[] = {
2114 "sparc-sun-solaris2.11", "sparc-sun-solaris2.12"};
2115 static const char *const SolarisSparcV9Triples[] = {
2116 "sparcv9-sun-solaris2.11", "sparcv9-sun-solaris2.12"};
2117 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11",
2118 "i386-pc-solaris2.12"};
2119 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11",
2120 "x86_64-pc-solaris2.12"};
2121 LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
2122 BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
2123 switch (TargetTriple.getArch()) {
2124 case llvm::Triple::x86:
2125 TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples));
2126 BiarchTripleAliases.append(begin(SolarisX86_64Triples),
2127 end(SolarisX86_64Triples));
2129 case llvm::Triple::x86_64:
2130 TripleAliases.append(begin(SolarisX86_64Triples),
2131 end(SolarisX86_64Triples));
2132 BiarchTripleAliases.append(begin(SolarisX86Triples),
2133 end(SolarisX86Triples));
2135 case llvm::Triple::sparc:
2136 TripleAliases.append(begin(SolarisSparcV8Triples),
2137 end(SolarisSparcV8Triples));
2138 BiarchTripleAliases.append(begin(SolarisSparcV9Triples),
2139 end(SolarisSparcV9Triples));
2141 case llvm::Triple::sparcv9:
2142 TripleAliases.append(begin(SolarisSparcV9Triples),
2143 end(SolarisSparcV9Triples));
2144 BiarchTripleAliases.append(begin(SolarisSparcV8Triples),
2145 end(SolarisSparcV8Triples));
2153 // Android targets should not use GNU/Linux tools or libraries.
2154 if (TargetTriple.isAndroid()) {
2155 static const char *const AArch64AndroidTriples[] = {
2156 "aarch64-linux-android"};
2157 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"};
2158 static const char *const MIPSELAndroidTriples[] = {"mipsel-linux-android"};
2159 static const char *const MIPS64ELAndroidTriples[] = {
2160 "mips64el-linux-android"};
2161 static const char *const X86AndroidTriples[] = {"i686-linux-android"};
2162 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"};
2164 switch (TargetTriple.getArch()) {
2165 case llvm::Triple::aarch64:
2166 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2167 TripleAliases.append(begin(AArch64AndroidTriples),
2168 end(AArch64AndroidTriples));
2170 case llvm::Triple::arm:
2171 case llvm::Triple::thumb:
2172 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2173 TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples));
2175 case llvm::Triple::mipsel:
2176 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2177 TripleAliases.append(begin(MIPSELAndroidTriples),
2178 end(MIPSELAndroidTriples));
2179 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2180 BiarchTripleAliases.append(begin(MIPS64ELAndroidTriples),
2181 end(MIPS64ELAndroidTriples));
2183 case llvm::Triple::mips64el:
2184 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2185 TripleAliases.append(begin(MIPS64ELAndroidTriples),
2186 end(MIPS64ELAndroidTriples));
2187 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2188 BiarchTripleAliases.append(begin(MIPSELAndroidTriples),
2189 end(MIPSELAndroidTriples));
2191 case llvm::Triple::x86_64:
2192 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2193 TripleAliases.append(begin(X86_64AndroidTriples),
2194 end(X86_64AndroidTriples));
2195 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2196 BiarchTripleAliases.append(begin(X86AndroidTriples),
2197 end(X86AndroidTriples));
2199 case llvm::Triple::x86:
2200 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2201 TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples));
2202 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2203 BiarchTripleAliases.append(begin(X86_64AndroidTriples),
2204 end(X86_64AndroidTriples));
2213 switch (TargetTriple.getArch()) {
2214 case llvm::Triple::aarch64:
2215 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2216 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2217 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2218 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2220 case llvm::Triple::aarch64_be:
2221 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2222 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2223 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2224 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2226 case llvm::Triple::arm:
2227 case llvm::Triple::thumb:
2228 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2229 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
2230 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples));
2232 TripleAliases.append(begin(ARMTriples), end(ARMTriples));
2235 case llvm::Triple::armeb:
2236 case llvm::Triple::thumbeb:
2237 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs));
2238 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
2239 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples));
2241 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples));
2244 case llvm::Triple::avr:
2245 LibDirs.append(begin(AVRLibDirs), end(AVRLibDirs));
2246 TripleAliases.append(begin(AVRTriples), end(AVRTriples));
2248 case llvm::Triple::x86_64:
2249 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2250 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2251 // x32 is always available when x86_64 is available, so adding it as
2252 // secondary arch with x86_64 triples
2253 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32) {
2254 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2255 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2257 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2258 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples));
2261 case llvm::Triple::x86:
2262 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2263 // MCU toolchain is 32 bit only and its triple alias is TargetTriple
2264 // itself, which will be appended below.
2265 if (!TargetTriple.isOSIAMCU()) {
2266 TripleAliases.append(begin(X86Triples), end(X86Triples));
2267 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2268 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2271 case llvm::Triple::mips:
2272 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2273 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2274 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2275 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2276 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2277 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2279 case llvm::Triple::mipsel:
2280 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2281 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2282 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2283 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2284 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2285 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2286 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2288 case llvm::Triple::mips64:
2289 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2290 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2291 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2292 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2293 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2294 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2296 case llvm::Triple::mips64el:
2297 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2298 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2299 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2300 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2301 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2302 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2303 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2305 case llvm::Triple::msp430:
2306 LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs));
2307 TripleAliases.append(begin(MSP430Triples), end(MSP430Triples));
2309 case llvm::Triple::ppc:
2310 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2311 TripleAliases.append(begin(PPCTriples), end(PPCTriples));
2312 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2313 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2315 case llvm::Triple::ppc64:
2316 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2317 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2318 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2319 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples));
2321 case llvm::Triple::ppc64le:
2322 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
2323 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
2325 case llvm::Triple::riscv32:
2326 LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2327 TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
2328 BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
2329 BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
2331 case llvm::Triple::riscv64:
2332 LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
2333 TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
2334 BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2335 BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
2337 case llvm::Triple::sparc:
2338 case llvm::Triple::sparcel:
2339 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2340 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2341 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2342 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2344 case llvm::Triple::sparcv9:
2345 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2346 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2347 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2348 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2350 case llvm::Triple::systemz:
2351 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs));
2352 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples));
2355 // By default, just rely on the standard lib directories and the original
2360 // Always append the drivers target triple to the end, in case it doesn't
2361 // match any of our aliases.
2362 TripleAliases.push_back(TargetTriple.str());
2364 // Also include the multiarch variant if it's different.
2365 if (TargetTriple.str() != BiarchTriple.str())
2366 BiarchTripleAliases.push_back(BiarchTriple.str());
2369 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2370 const llvm::Triple &TargetTriple, const ArgList &Args,
2371 StringRef Path, bool NeedsBiarchSuffix) {
2372 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2373 DetectedMultilibs Detected;
2375 // Android standalone toolchain could have multilibs for ARM and Thumb.
2376 // Debian mips multilibs behave more like the rest of the biarch ones,
2377 // so handle them there
2378 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) {
2379 // It should also work without multilibs in a simplified toolchain.
2380 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected);
2381 } else if (TargetTriple.isMIPS()) {
2382 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected))
2384 } else if (TargetTriple.isRISCV()) {
2385 findRISCVMultilibs(D, TargetTriple, Path, Args, Detected);
2386 } else if (isMSP430(TargetArch)) {
2387 findMSP430Multilibs(D, TargetTriple, Path, Args, Detected);
2388 } else if (TargetArch == llvm::Triple::avr) {
2389 // AVR has no multilibs.
2390 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2391 NeedsBiarchSuffix, Detected)) {
2395 Multilibs = Detected.Multilibs;
2396 SelectedMultilib = Detected.SelectedMultilib;
2397 BiarchSibling = Detected.BiarchSibling;
2402 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2403 const llvm::Triple &TargetTriple, const ArgList &Args,
2404 const std::string &LibDir, StringRef CandidateTriple,
2405 bool NeedsBiarchSuffix) {
2406 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2407 // Locations relative to the system lib directory where GCC's triple-specific
2408 // directories might reside.
2409 struct GCCLibSuffix {
2410 // Path from system lib directory to GCC triple-specific directory.
2411 std::string LibSuffix;
2412 // Path from GCC triple-specific directory back to system lib directory.
2413 // This is one '..' component per component in LibSuffix.
2414 StringRef ReversePath;
2415 // Whether this library suffix is relevant for the triple.
2418 // This is the normal place.
2419 {"gcc/" + CandidateTriple.str(), "../..", true},
2421 // Debian puts cross-compilers in gcc-cross.
2422 {"gcc-cross/" + CandidateTriple.str(), "../..",
2423 TargetTriple.getOS() != llvm::Triple::Solaris},
2425 // The Freescale PPC SDK has the gcc libraries in
2426 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2427 // this on Freescale triples, though, since some systems put a *lot* of
2428 // files in that location, not just GCC installation data.
2429 {CandidateTriple.str(), "..",
2430 TargetTriple.getVendor() == llvm::Triple::Freescale ||
2431 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded},
2433 // Natively multiarch systems sometimes put the GCC triple-specific
2434 // directory within their multiarch lib directory, resulting in the
2435 // triple appearing twice.
2436 {CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), "../../..",
2437 TargetTriple.getOS() != llvm::Triple::Solaris},
2439 // Deal with cases (on Ubuntu) where the system architecture could be i386
2440 // but the GCC target architecture could be (say) i686.
2441 // FIXME: It may be worthwhile to generalize this and look for a second
2443 {"i386-linux-gnu/gcc/" + CandidateTriple.str(), "../../..",
2444 (TargetArch == llvm::Triple::x86 &&
2445 TargetTriple.getOS() != llvm::Triple::Solaris)},
2446 {"i386-gnu/gcc/" + CandidateTriple.str(), "../../..",
2447 (TargetArch == llvm::Triple::x86 &&
2448 TargetTriple.getOS() != llvm::Triple::Solaris)}};
2450 for (auto &Suffix : Suffixes) {
2454 StringRef LibSuffix = Suffix.LibSuffix;
2456 for (llvm::vfs::directory_iterator
2457 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC),
2459 !EC && LI != LE; LI = LI.increment(EC)) {
2460 StringRef VersionText = llvm::sys::path::filename(LI->path());
2461 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2462 if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2463 if (!CandidateGCCInstallPaths.insert(LI->path()).second)
2464 continue; // Saw this path before; no need to look at it again.
2465 if (CandidateVersion.isOlderThan(4, 1, 1))
2467 if (CandidateVersion <= Version)
2470 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(),
2474 Version = CandidateVersion;
2475 GCCTriple.setTriple(CandidateTriple);
2476 // FIXME: We hack together the directory name here instead of
2477 // using LI to ensure stable path separators across Windows and
2479 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2480 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str();
2486 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs(
2487 const llvm::Triple &TargetTriple, const ArgList &Args,
2488 const SmallVectorImpl<StringRef> &CandidateTriples,
2489 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) {
2490 for (StringRef CandidateTriple : CandidateTriples) {
2491 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
2495 for (StringRef CandidateTriple : CandidateBiarchTriples) {
2496 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true))
2502 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2503 const llvm::Triple &TargetTriple, const ArgList &Args,
2504 StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2505 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2506 D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/config-" +
2507 CandidateTriple.str());
2509 SmallVector<StringRef, 2> Lines;
2510 File.get()->getBuffer().split(Lines, "\n");
2511 for (StringRef Line : Lines) {
2513 // CURRENT=triple-version
2514 if (!Line.consume_front("CURRENT="))
2516 // Process the config file pointed to by CURRENT.
2517 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile =
2518 D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/" +
2520 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-');
2521 // List of paths to scan for libraries.
2522 SmallVector<StringRef, 4> GentooScanPaths;
2523 // Scan the Config file to find installed GCC libraries path.
2524 // Typical content of the GCC config file:
2525 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/
2526 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32"
2527 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man"
2528 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info"
2529 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4"
2530 // We are looking for the paths listed in LDPATH=... .
2532 SmallVector<StringRef, 2> ConfigLines;
2533 ConfigFile.get()->getBuffer().split(ConfigLines, "\n");
2534 for (StringRef ConfLine : ConfigLines) {
2535 ConfLine = ConfLine.trim();
2536 if (ConfLine.consume_front("LDPATH=")) {
2537 // Drop '"' from front and back if present.
2538 ConfLine.consume_back("\"");
2539 ConfLine.consume_front("\"");
2540 // Get all paths sperated by ':'
2541 ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false);
2545 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}.
2546 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/"
2547 + ActiveVersion.second.str();
2548 GentooScanPaths.push_back(StringRef(basePath));
2550 // Scan all paths for GCC libraries.
2551 for (const auto &GentooScanPath : GentooScanPaths) {
2552 std::string GentooPath = D.SysRoot + std::string(GentooScanPath);
2553 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) {
2554 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath,
2558 Version = GCCVersion::Parse(ActiveVersion.second);
2559 GCCInstallPath = GentooPath;
2560 GCCParentLibPath = GentooPath + std::string("/../../..");
2561 GCCTriple.setTriple(ActiveVersion.first);
2572 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
2573 const ArgList &Args)
2574 : ToolChain(D, Triple, Args), GCCInstallation(D),
2575 CudaInstallation(D, Triple, Args) {
2576 getProgramPaths().push_back(getDriver().getInstalledDir());
2577 if (getDriver().getInstalledDir() != getDriver().Dir)
2578 getProgramPaths().push_back(getDriver().Dir);
2581 Generic_GCC::~Generic_GCC() {}
2583 Tool *Generic_GCC::getTool(Action::ActionClass AC) const {
2585 case Action::PreprocessJobClass:
2587 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this));
2588 return Preprocess.get();
2589 case Action::CompileJobClass:
2591 Compile.reset(new tools::gcc::Compiler(*this));
2592 return Compile.get();
2594 return ToolChain::getTool(AC);
2598 Tool *Generic_GCC::buildAssembler() const {
2599 return new tools::gnutools::Assembler(*this);
2602 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
2604 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
2605 // Print the information about how we detected the GCC installation.
2606 GCCInstallation.print(OS);
2607 CudaInstallation.print(OS);
2610 bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const {
2611 return getArch() == llvm::Triple::x86_64;
2614 bool Generic_GCC::isPICDefault() const {
2615 switch (getArch()) {
2616 case llvm::Triple::x86_64:
2617 return getTriple().isOSWindows();
2618 case llvm::Triple::mips64:
2619 case llvm::Triple::mips64el:
2626 bool Generic_GCC::isPIEDefault() const { return false; }
2628 bool Generic_GCC::isPICDefaultForced() const {
2629 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
2632 bool Generic_GCC::IsIntegratedAssemblerDefault() const {
2633 switch (getTriple().getArch()) {
2634 case llvm::Triple::x86:
2635 case llvm::Triple::x86_64:
2636 case llvm::Triple::aarch64:
2637 case llvm::Triple::aarch64_be:
2638 case llvm::Triple::arm:
2639 case llvm::Triple::armeb:
2640 case llvm::Triple::avr:
2641 case llvm::Triple::bpfel:
2642 case llvm::Triple::bpfeb:
2643 case llvm::Triple::thumb:
2644 case llvm::Triple::thumbeb:
2645 case llvm::Triple::ppc:
2646 case llvm::Triple::ppc64:
2647 case llvm::Triple::ppc64le:
2648 case llvm::Triple::riscv32:
2649 case llvm::Triple::riscv64:
2650 case llvm::Triple::systemz:
2651 case llvm::Triple::mips:
2652 case llvm::Triple::mipsel:
2653 case llvm::Triple::mips64:
2654 case llvm::Triple::mips64el:
2655 case llvm::Triple::msp430:
2657 case llvm::Triple::sparc:
2658 case llvm::Triple::sparcel:
2659 case llvm::Triple::sparcv9:
2660 if (getTriple().isOSFreeBSD() || getTriple().isOSOpenBSD() ||
2661 getTriple().isOSSolaris())
2669 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
2670 ArgStringList &CC1Args) const {
2671 if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
2672 DriverArgs.hasArg(options::OPT_nostdincxx))
2675 switch (GetCXXStdlibType(DriverArgs)) {
2676 case ToolChain::CST_Libcxx:
2677 addLibCxxIncludePaths(DriverArgs, CC1Args);
2680 case ToolChain::CST_Libstdcxx:
2681 addLibStdCxxIncludePaths(DriverArgs, CC1Args);
2686 static std::string DetectLibcxxIncludePath(llvm::vfs::FileSystem &vfs,
2690 std::string MaxVersionString;
2691 for (llvm::vfs::directory_iterator LI = vfs.dir_begin(base, EC), LE;
2692 !EC && LI != LE; LI = LI.increment(EC)) {
2693 StringRef VersionText = llvm::sys::path::filename(LI->path());
2695 if (VersionText[0] == 'v' &&
2696 !VersionText.slice(1, StringRef::npos).getAsInteger(10, Version)) {
2697 if (Version > MaxVersion) {
2698 MaxVersion = Version;
2699 MaxVersionString = VersionText;
2703 return MaxVersion ? (base + "/" + MaxVersionString).str() : "";
2707 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
2708 llvm::opt::ArgStringList &CC1Args) const {
2709 const std::string& SysRoot = getDriver().SysRoot;
2710 auto AddIncludePath = [&](std::string Path) {
2711 std::string IncludePath = DetectLibcxxIncludePath(getVFS(), Path);
2712 if (IncludePath.empty() || !getVFS().exists(IncludePath))
2714 addSystemInclude(DriverArgs, CC1Args, IncludePath);
2717 // Android never uses the libc++ headers installed alongside the toolchain,
2718 // which are generally incompatible with the NDK libraries anyway.
2719 if (!getTriple().isAndroid())
2720 if (AddIncludePath(getDriver().Dir + "/../include/c++"))
2722 // If this is a development, non-installed, clang, libcxx will
2723 // not be found at ../include/c++ but it likely to be found at
2724 // one of the following two locations:
2725 if (AddIncludePath(SysRoot + "/usr/local/include/c++"))
2727 if (AddIncludePath(SysRoot + "/usr/include/c++"))
2731 /// Helper to add the variant paths of a libstdc++ installation.
2732 bool Generic_GCC::addLibStdCXXIncludePaths(
2733 Twine Base, Twine Suffix, StringRef GCCTriple, StringRef GCCMultiarchTriple,
2734 StringRef TargetMultiarchTriple, Twine IncludeSuffix,
2735 const ArgList &DriverArgs, ArgStringList &CC1Args) const {
2736 if (!getVFS().exists(Base + Suffix))
2739 addSystemInclude(DriverArgs, CC1Args, Base + Suffix);
2741 // The vanilla GCC layout of libstdc++ headers uses a triple subdirectory. If
2742 // that path exists or we have neither a GCC nor target multiarch triple, use
2743 // this vanilla search path.
2744 if ((GCCMultiarchTriple.empty() && TargetMultiarchTriple.empty()) ||
2745 getVFS().exists(Base + Suffix + "/" + GCCTriple + IncludeSuffix)) {
2746 addSystemInclude(DriverArgs, CC1Args,
2747 Base + Suffix + "/" + GCCTriple + IncludeSuffix);
2749 // Otherwise try to use multiarch naming schemes which have normalized the
2750 // triples and put the triple before the suffix.
2752 // GCC surprisingly uses *both* the GCC triple with a multilib suffix and
2753 // the target triple, so we support that here.
2754 addSystemInclude(DriverArgs, CC1Args,
2755 Base + "/" + GCCMultiarchTriple + Suffix + IncludeSuffix);
2756 addSystemInclude(DriverArgs, CC1Args,
2757 Base + "/" + TargetMultiarchTriple + Suffix);
2760 addSystemInclude(DriverArgs, CC1Args, Base + Suffix + "/backward");
2765 Generic_GCC::addGCCLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
2766 llvm::opt::ArgStringList &CC1Args) const {
2767 // Use GCCInstallation to know where libstdc++ headers are installed.
2768 if (!GCCInstallation.isValid())
2771 // By default, look for the C++ headers in an include directory adjacent to
2772 // the lib directory of the GCC installation. Note that this is expect to be
2773 // equivalent to '/usr/include/c++/X.Y' in almost all cases.
2774 StringRef LibDir = GCCInstallation.getParentLibPath();
2775 StringRef InstallDir = GCCInstallation.getInstallPath();
2776 StringRef TripleStr = GCCInstallation.getTriple().str();
2777 const Multilib &Multilib = GCCInstallation.getMultilib();
2778 const std::string GCCMultiarchTriple = getMultiarchTriple(
2779 getDriver(), GCCInstallation.getTriple(), getDriver().SysRoot);
2780 const std::string TargetMultiarchTriple =
2781 getMultiarchTriple(getDriver(), getTriple(), getDriver().SysRoot);
2782 const GCCVersion &Version = GCCInstallation.getVersion();
2784 // The primary search for libstdc++ supports multiarch variants.
2785 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include",
2786 "/c++/" + Version.Text, TripleStr,
2787 GCCMultiarchTriple, TargetMultiarchTriple,
2788 Multilib.includeSuffix(), DriverArgs, CC1Args))
2791 // Otherwise, fall back on a bunch of options which don't use multiarch
2792 // layouts for simplicity.
2793 const std::string LibStdCXXIncludePathCandidates[] = {
2794 // Gentoo is weird and places its headers inside the GCC install,
2795 // so if the first attempt to find the headers fails, try these patterns.
2796 InstallDir.str() + "/include/g++-v" + Version.Text,
2797 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." +
2799 InstallDir.str() + "/include/g++-v" + Version.MajorStr,
2802 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) {
2803 if (addLibStdCXXIncludePaths(IncludePath, /*Suffix*/ "", TripleStr,
2804 /*GCCMultiarchTriple*/ "",
2805 /*TargetMultiarchTriple*/ "",
2806 Multilib.includeSuffix(), DriverArgs, CC1Args))
2813 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
2814 llvm::opt::ArgStringList &CC1Args) const {
2815 addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args);
2818 llvm::opt::DerivedArgList *
2819 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef,
2820 Action::OffloadKind DeviceOffloadKind) const {
2822 // If this tool chain is used for an OpenMP offloading device we have to make
2823 // sure we always generate a shared library regardless of the commands the
2824 // user passed to the host. This is required because the runtime library
2825 // is required to load the device image dynamically at run time.
2826 if (DeviceOffloadKind == Action::OFK_OpenMP) {
2827 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
2828 const OptTable &Opts = getDriver().getOpts();
2830 // Request the shared library. Given that these options are decided
2831 // implicitly, they do not refer to any base argument.
2832 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared));
2833 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC));
2835 // Filter all the arguments we don't care passing to the offloading
2836 // toolchain as they can mess up with the creation of a shared library.
2837 for (auto *A : Args) {
2838 switch ((options::ID)A->getOption().getID()) {
2842 case options::OPT_shared:
2843 case options::OPT_dynamic:
2844 case options::OPT_static:
2845 case options::OPT_fPIC:
2846 case options::OPT_fno_PIC:
2847 case options::OPT_fpic:
2848 case options::OPT_fno_pic:
2849 case options::OPT_fPIE:
2850 case options::OPT_fno_PIE:
2851 case options::OPT_fpie:
2852 case options::OPT_fno_pie:
2861 void Generic_ELF::anchor() {}
2863 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
2864 ArgStringList &CC1Args,
2865 Action::OffloadKind) const {
2866 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
2867 options::OPT_fno_use_init_array, true))
2868 CC1Args.push_back("-fno-use-init-array");