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;
38 using tools::addPathIfExists;
40 static bool forwardToGCC(const Option &O) {
41 // Don't forward inputs from the original command line. They are added from
43 return O.getKind() != Option::InputClass &&
44 !O.hasFlag(options::DriverOption) && !O.hasFlag(options::LinkerInput);
47 // Switch CPU names not recognized by GNU assembler to a close CPU that it does
48 // recognize, instead of a lower march from being picked in the absence of a cpu
50 static void normalizeCPUNamesForAssembler(const ArgList &Args,
51 ArgStringList &CmdArgs) {
52 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
53 StringRef CPUArg(A->getValue());
54 if (CPUArg.equals_lower("krait"))
55 CmdArgs.push_back("-mcpu=cortex-a15");
56 else if(CPUArg.equals_lower("kryo"))
57 CmdArgs.push_back("-mcpu=cortex-a57");
59 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
63 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA,
64 const InputInfo &Output,
65 const InputInfoList &Inputs,
67 const char *LinkingOutput) const {
68 const Driver &D = getToolChain().getDriver();
69 ArgStringList CmdArgs;
71 for (const auto &A : Args) {
72 if (forwardToGCC(A->getOption())) {
73 // It is unfortunate that we have to claim here, as this means
74 // we will basically never report anything interesting for
75 // platforms using a generic gcc, even if we are just using gcc
76 // to get to the assembler.
79 // Don't forward any -g arguments to assembly steps.
80 if (isa<AssembleJobAction>(JA) &&
81 A->getOption().matches(options::OPT_g_Group))
84 // Don't forward any -W arguments to assembly and link steps.
85 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) &&
86 A->getOption().matches(options::OPT_W_Group))
89 // Don't forward -mno-unaligned-access since GCC doesn't understand
90 // it and because it doesn't affect the assembly or link steps.
91 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) &&
92 (A->getOption().matches(options::OPT_munaligned_access) ||
93 A->getOption().matches(options::OPT_mno_unaligned_access)))
96 A->render(Args, CmdArgs);
100 RenderExtraToolArgs(JA, CmdArgs);
102 // If using a driver driver, force the arch.
103 if (getToolChain().getTriple().isOSDarwin()) {
104 CmdArgs.push_back("-arch");
106 Args.MakeArgString(getToolChain().getDefaultUniversalArchName()));
109 // Try to force gcc to match the tool chain we want, if we recognize
112 // FIXME: The triple class should directly provide the information we want
114 switch (getToolChain().getArch()) {
117 case llvm::Triple::x86:
118 case llvm::Triple::ppc:
119 CmdArgs.push_back("-m32");
121 case llvm::Triple::x86_64:
122 case llvm::Triple::ppc64:
123 case llvm::Triple::ppc64le:
124 CmdArgs.push_back("-m64");
126 case llvm::Triple::sparcel:
127 CmdArgs.push_back("-EL");
131 if (Output.isFilename()) {
132 CmdArgs.push_back("-o");
133 CmdArgs.push_back(Output.getFilename());
135 assert(Output.isNothing() && "Unexpected output");
136 CmdArgs.push_back("-fsyntax-only");
139 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
141 // Only pass -x if gcc will understand it; otherwise hope gcc
142 // understands the suffix correctly. The main use case this would go
143 // wrong in is for linker inputs if they happened to have an odd
144 // suffix; really the only way to get this to happen is a command
145 // like '-x foobar a.c' which will treat a.c like a linker input.
147 // FIXME: For the linker case specifically, can we safely convert
148 // inputs into '-Wl,' options?
149 for (const auto &II : Inputs) {
150 // Don't try to pass LLVM or AST inputs to a generic gcc.
151 if (types::isLLVMIR(II.getType()))
152 D.Diag(clang::diag::err_drv_no_linker_llvm_support)
153 << getToolChain().getTripleString();
154 else if (II.getType() == types::TY_AST)
155 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString();
156 else if (II.getType() == types::TY_ModuleFile)
157 D.Diag(diag::err_drv_no_module_support)
158 << getToolChain().getTripleString();
160 if (types::canTypeBeUserSpecified(II.getType())) {
161 CmdArgs.push_back("-x");
162 CmdArgs.push_back(types::getTypeName(II.getType()));
166 CmdArgs.push_back(II.getFilename());
168 const Arg &A = II.getInputArg();
170 // Reverse translate some rewritten options.
171 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) {
172 CmdArgs.push_back("-lstdc++");
176 // Don't render as input, we need gcc to do the translations.
177 A.render(Args, CmdArgs);
181 const std::string &customGCCName = D.getCCCGenericGCCName();
183 if (!customGCCName.empty())
184 GCCName = customGCCName.c_str();
185 else if (D.CCCIsCXX()) {
190 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
191 C.addCommand(std::make_unique<Command>(
192 JA, *this, ResponseFileSupport::AtFileCurCP(), 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";
307 case llvm::Triple::ve:
314 static bool getPIE(const ArgList &Args, const ToolChain &TC) {
315 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_static) ||
316 Args.hasArg(options::OPT_r) || Args.hasArg(options::OPT_static_pie))
319 Arg *A = Args.getLastArg(options::OPT_pie, options::OPT_no_pie,
322 return TC.isPIEDefault();
323 return A->getOption().matches(options::OPT_pie);
326 static bool getStaticPIE(const ArgList &Args, const ToolChain &TC) {
327 bool HasStaticPIE = Args.hasArg(options::OPT_static_pie);
328 // -no-pie is an alias for -nopie. So, handling -nopie takes care of
330 if (HasStaticPIE && Args.hasArg(options::OPT_nopie)) {
331 const Driver &D = TC.getDriver();
332 const llvm::opt::OptTable &Opts = D.getOpts();
333 const char *StaticPIEName = Opts.getOptionName(options::OPT_static_pie);
334 const char *NoPIEName = Opts.getOptionName(options::OPT_nopie);
335 D.Diag(diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName;
340 static bool getStatic(const ArgList &Args) {
341 return Args.hasArg(options::OPT_static) &&
342 !Args.hasArg(options::OPT_static_pie);
345 void tools::gnutools::StaticLibTool::ConstructJob(
346 Compilation &C, const JobAction &JA, const InputInfo &Output,
347 const InputInfoList &Inputs, const ArgList &Args,
348 const char *LinkingOutput) const {
349 const Driver &D = getToolChain().getDriver();
351 // Silence warning for "clang -g foo.o -o foo"
352 Args.ClaimAllArgs(options::OPT_g_Group);
353 // and "clang -emit-llvm foo.o -o foo"
354 Args.ClaimAllArgs(options::OPT_emit_llvm);
355 // and for "clang -w foo.o -o foo". Other warning options are already
356 // handled somewhere else.
357 Args.ClaimAllArgs(options::OPT_w);
358 // Silence warnings when linking C code with a C++ '-stdlib' argument.
359 Args.ClaimAllArgs(options::OPT_stdlib_EQ);
361 // GNU ar tool command "ar <options> <output_file> <input_files>".
362 ArgStringList CmdArgs;
363 // Create and insert file members with a deterministic index.
364 CmdArgs.push_back("rcsD");
365 CmdArgs.push_back(Output.getFilename());
366 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA);
368 // Delete old output archive file if it already exists before generating a new
370 auto OutputFileName = Output.getFilename();
371 if (Output.isFilename() && llvm::sys::fs::exists(OutputFileName)) {
372 if (std::error_code EC = llvm::sys::fs::remove(OutputFileName)) {
373 D.Diag(diag::err_drv_unable_to_remove_file) << EC.message();
378 const char *Exec = Args.MakeArgString(getToolChain().GetStaticLibToolPath());
379 C.addCommand(std::make_unique<Command>(
380 JA, *this, ResponseFileSupport::AtFileCurCP(), Exec, CmdArgs, Inputs));
383 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
384 const InputInfo &Output,
385 const InputInfoList &Inputs,
387 const char *LinkingOutput) const {
388 // FIXME: The Linker class constructor takes a ToolChain and not a
389 // Generic_ELF, so the static_cast might return a reference to a invalid
390 // instance (see PR45061). Ideally, the Linker constructor needs to take a
391 // Generic_ELF instead.
392 const toolchains::Generic_ELF &ToolChain =
393 static_cast<const toolchains::Generic_ELF &>(getToolChain());
394 const Driver &D = ToolChain.getDriver();
396 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
398 const llvm::Triple::ArchType Arch = ToolChain.getArch();
399 const bool isAndroid = ToolChain.getTriple().isAndroid();
400 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
401 const bool IsVE = ToolChain.getTriple().isVE();
402 const bool IsPIE = getPIE(Args, ToolChain);
403 const bool IsStaticPIE = getStaticPIE(Args, ToolChain);
404 const bool IsStatic = getStatic(Args);
405 const bool HasCRTBeginEndFiles =
406 ToolChain.getTriple().hasEnvironment() ||
407 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
409 ArgStringList CmdArgs;
411 // Silence warning for "clang -g foo.o -o foo"
412 Args.ClaimAllArgs(options::OPT_g_Group);
413 // and "clang -emit-llvm foo.o -o foo"
414 Args.ClaimAllArgs(options::OPT_emit_llvm);
415 // and for "clang -w foo.o -o foo". Other warning options are already
416 // handled somewhere else.
417 Args.ClaimAllArgs(options::OPT_w);
419 if (!D.SysRoot.empty())
420 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
423 CmdArgs.push_back("-pie");
426 CmdArgs.push_back("-static");
427 CmdArgs.push_back("-pie");
428 CmdArgs.push_back("--no-dynamic-linker");
429 CmdArgs.push_back("-z");
430 CmdArgs.push_back("text");
433 if (ToolChain.isNoExecStackDefault()) {
434 CmdArgs.push_back("-z");
435 CmdArgs.push_back("noexecstack");
438 if (Args.hasArg(options::OPT_rdynamic))
439 CmdArgs.push_back("-export-dynamic");
441 if (Args.hasArg(options::OPT_s))
442 CmdArgs.push_back("-s");
444 if (Triple.isARM() || Triple.isThumb() || Triple.isAArch64()) {
445 bool IsBigEndian = isArmBigEndian(Triple, Args);
447 arm::appendBE8LinkFlag(Args, CmdArgs, Triple);
448 IsBigEndian = IsBigEndian || Arch == llvm::Triple::aarch64_be;
449 CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL");
452 // Most Android ARM64 targets should enable the linker fix for erratum
453 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
454 if (Arch == llvm::Triple::aarch64 && isAndroid) {
455 std::string CPU = getCPUName(Args, Triple);
456 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
457 CmdArgs.push_back("--fix-cortex-a53-843419");
460 // Android does not allow shared text relocations. Emit a warning if the
461 // user's code contains any.
463 CmdArgs.push_back("--warn-shared-textrel");
465 ToolChain.addExtraOpts(CmdArgs);
467 CmdArgs.push_back("--eh-frame-hdr");
469 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) {
470 CmdArgs.push_back("-m");
471 CmdArgs.push_back(LDMOption);
473 D.Diag(diag::err_target_unknown_triple) << Triple.str();
478 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb ||
479 Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb)
480 CmdArgs.push_back("-Bstatic");
482 CmdArgs.push_back("-static");
483 } else if (Args.hasArg(options::OPT_shared)) {
484 CmdArgs.push_back("-shared");
488 if (Args.hasArg(options::OPT_rdynamic))
489 CmdArgs.push_back("-export-dynamic");
491 if (!Args.hasArg(options::OPT_shared) && !IsStaticPIE) {
492 CmdArgs.push_back("-dynamic-linker");
493 CmdArgs.push_back(Args.MakeArgString(Twine(D.DyldPrefix) +
494 ToolChain.getDynamicLinker(Args)));
498 CmdArgs.push_back("-o");
499 CmdArgs.push_back(Output.getFilename());
501 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
502 if (!isAndroid && !IsIAMCU) {
503 const char *crt1 = nullptr;
504 if (!Args.hasArg(options::OPT_shared)) {
505 if (Args.hasArg(options::OPT_pg))
509 else if (IsStaticPIE)
515 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
517 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
521 CmdArgs.push_back("-z");
522 CmdArgs.push_back("max-page-size=0x4000000");
526 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
527 else if (HasCRTBeginEndFiles) {
529 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
531 std::string crtbegin = ToolChain.getCompilerRT(Args, "crtbegin",
532 ToolChain::FT_Object);
533 if (ToolChain.getVFS().exists(crtbegin))
537 const char *crtbegin;
539 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
540 else if (Args.hasArg(options::OPT_shared))
541 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
542 else if (IsPIE || IsStaticPIE)
543 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
545 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
546 P = ToolChain.GetFilePath(crtbegin);
548 CmdArgs.push_back(Args.MakeArgString(P));
551 // Add crtfastmath.o if available and fast math is enabled.
552 ToolChain.addFastMathRuntimeIfAvailable(Args, CmdArgs);
555 Args.AddAllArgs(CmdArgs, options::OPT_L);
556 Args.AddAllArgs(CmdArgs, options::OPT_u);
558 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
560 if (D.isUsingLTO()) {
561 assert(!Inputs.empty() && "Must have at least one input.");
562 addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs[0],
563 D.getLTOMode() == LTOK_Thin);
566 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
567 CmdArgs.push_back("--no-demangle");
569 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
570 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
571 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
572 // The profile runtime also needs access to system libraries.
573 getToolChain().addProfileRTLibs(Args, CmdArgs);
576 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
577 if (ToolChain.ShouldLinkCXXStdlib(Args)) {
578 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
579 !Args.hasArg(options::OPT_static);
580 if (OnlyLibstdcxxStatic)
581 CmdArgs.push_back("-Bstatic");
582 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
583 if (OnlyLibstdcxxStatic)
584 CmdArgs.push_back("-Bdynamic");
586 CmdArgs.push_back("-lm");
588 // Silence warnings when linking C code with a C++ '-stdlib' argument.
589 Args.ClaimAllArgs(options::OPT_stdlib_EQ);
591 if (!Args.hasArg(options::OPT_nostdlib)) {
592 if (!Args.hasArg(options::OPT_nodefaultlibs)) {
593 if (IsStatic || IsStaticPIE)
594 CmdArgs.push_back("--start-group");
596 if (NeedsSanitizerDeps)
597 linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
600 linkXRayRuntimeDeps(ToolChain, CmdArgs);
602 bool WantPthread = Args.hasArg(options::OPT_pthread) ||
603 Args.hasArg(options::OPT_pthreads);
605 // Use the static OpenMP runtime with -static-openmp
606 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) &&
607 !Args.hasArg(options::OPT_static);
609 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
610 // require librt. Most modern Linux platforms do, but some may not.
611 if (addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP,
612 JA.isHostOffloading(Action::OFK_OpenMP),
613 /* GompNeedsRT= */ true))
614 // OpenMP runtimes implies pthreads when using the GNU toolchain.
615 // FIXME: Does this really make sense for all GNU toolchains?
618 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
620 if (WantPthread && !isAndroid)
621 CmdArgs.push_back("-lpthread");
623 if (Args.hasArg(options::OPT_fsplit_stack))
624 CmdArgs.push_back("--wrap=pthread_create");
626 if (!Args.hasArg(options::OPT_nolibc))
627 CmdArgs.push_back("-lc");
629 // Add IAMCU specific libs, if needed.
631 CmdArgs.push_back("-lgloss");
633 if (IsStatic || IsStaticPIE)
634 CmdArgs.push_back("--end-group");
636 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
638 // Add IAMCU specific libs (outside the group), if needed.
640 CmdArgs.push_back("--as-needed");
641 CmdArgs.push_back("-lsoftfp");
642 CmdArgs.push_back("--no-as-needed");
646 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) {
647 if (HasCRTBeginEndFiles) {
649 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
651 std::string crtend = ToolChain.getCompilerRT(Args, "crtend",
652 ToolChain::FT_Object);
653 if (ToolChain.getVFS().exists(crtend))
658 if (Args.hasArg(options::OPT_shared))
659 crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
660 else if (IsPIE || IsStaticPIE)
661 crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
663 crtend = isAndroid ? "crtend_android.o" : "crtend.o";
664 P = ToolChain.GetFilePath(crtend);
666 CmdArgs.push_back(Args.MakeArgString(P));
669 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
673 Args.AddAllArgs(CmdArgs, options::OPT_T);
675 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
676 C.addCommand(std::make_unique<Command>(
677 JA, *this, ResponseFileSupport::AtFileCurCP(), Exec, CmdArgs, Inputs));
680 void tools::gnutools::Assembler::ConstructJob(Compilation &C,
682 const InputInfo &Output,
683 const InputInfoList &Inputs,
685 const char *LinkingOutput) const {
686 const auto &D = getToolChain().getDriver();
688 claimNoWarnArgs(Args);
690 ArgStringList CmdArgs;
692 llvm::Reloc::Model RelocationModel;
695 const char *DefaultAssembler = "as";
696 std::tie(RelocationModel, PICLevel, IsPIE) =
697 ParsePICArgs(getToolChain(), Args);
699 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) {
700 if (A->getOption().getID() == options::OPT_gz) {
701 CmdArgs.push_back("--compress-debug-sections");
703 StringRef Value = A->getValue();
704 if (Value == "none" || Value == "zlib" || Value == "zlib-gnu") {
706 Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
708 D.Diag(diag::err_drv_unsupported_option_argument)
709 << A->getOption().getName() << Value;
714 if (getToolChain().isNoExecStackDefault()) {
715 CmdArgs.push_back("--noexecstack");
718 switch (getToolChain().getArch()) {
721 // Add --32/--64 to make sure we get the format we want.
722 // This is incomplete
723 case llvm::Triple::x86:
724 CmdArgs.push_back("--32");
726 case llvm::Triple::x86_64:
727 if (getToolChain().getTriple().getEnvironment() == llvm::Triple::GNUX32)
728 CmdArgs.push_back("--x32");
730 CmdArgs.push_back("--64");
732 case llvm::Triple::ppc: {
733 CmdArgs.push_back("-a32");
734 CmdArgs.push_back("-mppc");
736 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
739 case llvm::Triple::ppc64: {
740 CmdArgs.push_back("-a64");
741 CmdArgs.push_back("-mppc64");
743 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
746 case llvm::Triple::ppc64le: {
747 CmdArgs.push_back("-a64");
748 CmdArgs.push_back("-mppc64");
749 CmdArgs.push_back("-mlittle-endian");
751 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
754 case llvm::Triple::riscv32:
755 case llvm::Triple::riscv64: {
756 StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple());
757 CmdArgs.push_back("-mabi");
758 CmdArgs.push_back(ABIName.data());
759 StringRef MArchName = riscv::getRISCVArch(Args, getToolChain().getTriple());
760 CmdArgs.push_back("-march");
761 CmdArgs.push_back(MArchName.data());
764 case llvm::Triple::sparc:
765 case llvm::Triple::sparcel: {
766 CmdArgs.push_back("-32");
767 std::string CPU = getCPUName(Args, getToolChain().getTriple());
769 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
770 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
773 case llvm::Triple::sparcv9: {
774 CmdArgs.push_back("-64");
775 std::string CPU = getCPUName(Args, getToolChain().getTriple());
777 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
778 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
781 case llvm::Triple::arm:
782 case llvm::Triple::armeb:
783 case llvm::Triple::thumb:
784 case llvm::Triple::thumbeb: {
785 const llvm::Triple &Triple2 = getToolChain().getTriple();
786 CmdArgs.push_back(isArmBigEndian(Triple2, Args) ? "-EB" : "-EL");
787 switch (Triple2.getSubArch()) {
788 case llvm::Triple::ARMSubArch_v7:
789 CmdArgs.push_back("-mfpu=neon");
791 case llvm::Triple::ARMSubArch_v8:
792 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8");
798 switch (arm::getARMFloatABI(getToolChain(), Args)) {
799 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
800 case arm::FloatABI::Soft:
801 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft"));
803 case arm::FloatABI::SoftFP:
804 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp"));
806 case arm::FloatABI::Hard:
807 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard"));
811 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
812 normalizeCPUNamesForAssembler(Args, CmdArgs);
814 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ);
817 case llvm::Triple::aarch64:
818 case llvm::Triple::aarch64_be: {
820 getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL");
821 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
822 normalizeCPUNamesForAssembler(Args, CmdArgs);
826 case llvm::Triple::mips:
827 case llvm::Triple::mipsel:
828 case llvm::Triple::mips64:
829 case llvm::Triple::mips64el: {
832 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
833 ABIName = mips::getGnuCompatibleMipsABIName(ABIName);
835 CmdArgs.push_back("-march");
836 CmdArgs.push_back(CPUName.data());
838 CmdArgs.push_back("-mabi");
839 CmdArgs.push_back(ABIName.data());
841 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
842 // or -mshared (not implemented) is in effect.
843 if (RelocationModel == llvm::Reloc::Static)
844 CmdArgs.push_back("-mno-shared");
846 // LLVM doesn't support -mplt yet and acts as if it is always given.
847 // However, -mplt has no effect with the N64 ABI.
848 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls))
849 CmdArgs.push_back("-call_nonpic");
851 if (getToolChain().getTriple().isLittleEndian())
852 CmdArgs.push_back("-EL");
854 CmdArgs.push_back("-EB");
856 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) {
857 if (StringRef(A->getValue()) == "2008")
858 CmdArgs.push_back(Args.MakeArgString("-mnan=2008"));
861 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
862 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx,
863 options::OPT_mfp64)) {
865 A->render(Args, CmdArgs);
866 } else if (mips::shouldUseFPXX(
867 Args, getToolChain().getTriple(), CPUName, ABIName,
868 mips::getMipsFloatABI(getToolChain().getDriver(), Args,
869 getToolChain().getTriple())))
870 CmdArgs.push_back("-mfpxx");
872 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
873 // -mno-mips16 is actually -no-mips16.
875 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) {
876 if (A->getOption().matches(options::OPT_mips16)) {
878 A->render(Args, CmdArgs);
881 CmdArgs.push_back("-no-mips16");
885 Args.AddLastArg(CmdArgs, options::OPT_mmicromips,
886 options::OPT_mno_micromips);
887 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp);
888 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2);
890 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) {
891 // Do not use AddLastArg because not all versions of MIPS assembler
892 // support -mmsa / -mno-msa options.
893 if (A->getOption().matches(options::OPT_mmsa))
894 CmdArgs.push_back(Args.MakeArgString("-mmsa"));
897 Args.AddLastArg(CmdArgs, options::OPT_mhard_float,
898 options::OPT_msoft_float);
900 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float,
901 options::OPT_msingle_float);
903 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg,
904 options::OPT_mno_odd_spreg);
906 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
909 case llvm::Triple::systemz: {
910 // Always pass an -march option, since our default of z10 is later
911 // than the GNU assembler's default.
912 std::string CPUName = systemz::getSystemZTargetCPU(Args);
913 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName));
916 case llvm::Triple::ve:
917 DefaultAssembler = "nas";
920 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
921 options::OPT_fdebug_prefix_map_EQ)) {
922 StringRef Map = A->getValue();
923 if (Map.find('=') == StringRef::npos)
924 D.Diag(diag::err_drv_invalid_argument_to_option)
925 << Map << A->getOption().getName();
927 CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map"));
928 CmdArgs.push_back(Args.MakeArgString(Map));
933 Args.AddAllArgs(CmdArgs, options::OPT_I);
934 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
936 CmdArgs.push_back("-o");
937 CmdArgs.push_back(Output.getFilename());
939 for (const auto &II : Inputs)
940 CmdArgs.push_back(II.getFilename());
943 Args.MakeArgString(getToolChain().GetProgramPath(DefaultAssembler));
944 C.addCommand(std::make_unique<Command>(
945 JA, *this, ResponseFileSupport::AtFileCurCP(), Exec, CmdArgs, Inputs));
947 // Handle the debug info splitting at object creation time if we're
948 // creating an object.
949 // TODO: Currently only works on linux with newer objcopy.
950 if (Args.hasArg(options::OPT_gsplit_dwarf) &&
951 getToolChain().getTriple().isOSLinux())
952 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
953 SplitDebugName(Args, Inputs[0], Output));
957 // Filter to remove Multilibs that don't exist as a suffix to Path
958 class FilterNonExistent {
959 StringRef Base, File;
960 llvm::vfs::FileSystem &VFS;
963 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS)
964 : Base(Base), File(File), VFS(VFS) {}
965 bool operator()(const Multilib &M) {
966 return !VFS.exists(Base + M.gccSuffix() + File);
969 } // end anonymous namespace
971 static bool isSoftFloatABI(const ArgList &Args) {
972 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
973 options::OPT_mfloat_abi_EQ);
977 return A->getOption().matches(options::OPT_msoft_float) ||
978 (A->getOption().matches(options::OPT_mfloat_abi_EQ) &&
979 A->getValue() == StringRef("soft"));
982 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
983 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
986 static bool isMipsEL(llvm::Triple::ArchType Arch) {
987 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
990 static bool isMips16(const ArgList &Args) {
991 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16);
992 return A && A->getOption().matches(options::OPT_mips16);
995 static bool isMicroMips(const ArgList &Args) {
996 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips);
997 return A && A->getOption().matches(options::OPT_mmicromips);
1000 static bool isMSP430(llvm::Triple::ArchType Arch) {
1001 return Arch == llvm::Triple::msp430;
1004 static Multilib makeMultilib(StringRef commonSuffix) {
1005 return Multilib(commonSuffix, commonSuffix, commonSuffix);
1008 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags,
1009 FilterNonExistent &NonExistent,
1010 DetectedMultilibs &Result) {
1011 // Check for Code Sourcery toolchain multilibs
1012 MultilibSet CSMipsMultilibs;
1014 auto MArchMips16 = makeMultilib("/mips16").flag("+m32").flag("+mips16");
1016 auto MArchMicroMips =
1017 makeMultilib("/micromips").flag("+m32").flag("+mmicromips");
1019 auto MArchDefault = makeMultilib("").flag("-mips16").flag("-mmicromips");
1021 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
1023 auto SoftFloat = makeMultilib("/soft-float").flag("+msoft-float");
1025 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
1028 makeMultilib("").flag("-msoft-float").flag("-mnan=2008");
1030 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
1032 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1034 // Note that this one's osSuffix is ""
1035 auto MAbi64 = makeMultilib("")
1037 .includeSuffix("/64")
1044 .Either(MArchMips16, MArchMicroMips, MArchDefault)
1046 .Either(SoftFloat, Nan2008, DefaultFloat)
1047 .FilterOut("/micromips/nan2008")
1048 .FilterOut("/mips16/nan2008")
1049 .Either(BigEndian, LittleEndian)
1051 .FilterOut("/mips16.*/64")
1052 .FilterOut("/micromips.*/64")
1053 .FilterOut(NonExistent)
1054 .setIncludeDirsCallback([](const Multilib &M) {
1055 std::vector<std::string> Dirs({"/include"});
1056 if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1058 "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
1060 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include");
1065 MultilibSet DebianMipsMultilibs;
1068 Multilib().gccSuffix("/n32").includeSuffix("/n32").flag("+mabi=n32");
1070 Multilib M64 = Multilib()
1072 .includeSuffix("/64")
1077 Multilib M32 = Multilib().flag("-m64").flag("+m32").flag("-mabi=n32");
1079 DebianMipsMultilibs =
1080 MultilibSet().Either(M32, M64, MAbiN32).FilterOut(NonExistent);
1083 // Sort candidates. Toolchain that best meets the directories tree goes first.
1084 // Then select the first toolchains matches command line flags.
1085 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
1086 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
1087 std::iter_swap(Candidates, Candidates + 1);
1088 for (const MultilibSet *Candidate : Candidates) {
1089 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1090 if (Candidate == &DebianMipsMultilibs)
1091 Result.BiarchSibling = Multilib();
1092 Result.Multilibs = *Candidate;
1099 static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path,
1100 const Multilib::flags_list &Flags,
1101 FilterNonExistent &NonExistent,
1102 DetectedMultilibs &Result) {
1104 MultilibSet AndroidMipsMultilibs =
1106 .Maybe(Multilib("/mips-r2").flag("+march=mips32r2"))
1107 .Maybe(Multilib("/mips-r6").flag("+march=mips32r6"))
1108 .FilterOut(NonExistent);
1110 MultilibSet AndroidMipselMultilibs =
1112 .Either(Multilib().flag("+march=mips32"),
1113 Multilib("/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1114 Multilib("/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1115 .FilterOut(NonExistent);
1117 MultilibSet AndroidMips64elMultilibs =
1120 Multilib().flag("+march=mips64r6"),
1121 Multilib("/32/mips-r1", "", "/mips-r1").flag("+march=mips32"),
1122 Multilib("/32/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1123 Multilib("/32/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1124 .FilterOut(NonExistent);
1126 MultilibSet *MS = &AndroidMipsMultilibs;
1127 if (VFS.exists(Path + "/mips-r6"))
1128 MS = &AndroidMipselMultilibs;
1129 else if (VFS.exists(Path + "/32"))
1130 MS = &AndroidMips64elMultilibs;
1131 if (MS->select(Flags, Result.SelectedMultilib)) {
1132 Result.Multilibs = *MS;
1138 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags,
1139 FilterNonExistent &NonExistent,
1140 DetectedMultilibs &Result) {
1141 // Musl toolchain multilibs
1142 MultilibSet MuslMipsMultilibs;
1144 auto MArchMipsR2 = makeMultilib("")
1145 .osSuffix("/mips-r2-hard-musl")
1148 .flag("+march=mips32r2");
1150 auto MArchMipselR2 = makeMultilib("/mipsel-r2-hard-musl")
1153 .flag("+march=mips32r2");
1155 MuslMipsMultilibs = MultilibSet().Either(MArchMipsR2, MArchMipselR2);
1157 // Specify the callback that computes the include directories.
1158 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1159 return std::vector<std::string>(
1160 {"/../sysroot" + M.osSuffix() + "/usr/include"});
1163 if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilib)) {
1164 Result.Multilibs = MuslMipsMultilibs;
1170 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags,
1171 FilterNonExistent &NonExistent,
1172 DetectedMultilibs &Result) {
1173 // CodeScape MTI toolchain v1.2 and early.
1174 MultilibSet MtiMipsMultilibsV1;
1176 auto MArchMips32 = makeMultilib("/mips32")
1179 .flag("-mmicromips")
1180 .flag("+march=mips32");
1182 auto MArchMicroMips = makeMultilib("/micromips")
1185 .flag("+mmicromips");
1187 auto MArchMips64r2 = makeMultilib("/mips64r2")
1190 .flag("+march=mips64r2");
1192 auto MArchMips64 = makeMultilib("/mips64").flag("-m32").flag("+m64").flag(
1195 auto MArchDefault = makeMultilib("")
1198 .flag("-mmicromips")
1199 .flag("+march=mips32r2");
1201 auto Mips16 = makeMultilib("/mips16").flag("+mips16");
1203 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
1206 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1208 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
1210 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1212 auto SoftFloat = makeMultilib("/sof").flag("+msoft-float");
1214 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
1216 MtiMipsMultilibsV1 =
1218 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64,
1222 .FilterOut("/mips64/mips16")
1223 .FilterOut("/mips64r2/mips16")
1224 .FilterOut("/micromips/mips16")
1226 .FilterOut("/micromips/64")
1227 .FilterOut("/mips32/64")
1229 .FilterOut("/mips16/64")
1230 .Either(BigEndian, LittleEndian)
1233 .FilterOut(".*sof/nan2008")
1234 .FilterOut(NonExistent)
1235 .setIncludeDirsCallback([](const Multilib &M) {
1236 std::vector<std::string> Dirs({"/include"});
1237 if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1238 Dirs.push_back("/../../../../sysroot/uclibc/usr/include");
1240 Dirs.push_back("/../../../../sysroot/usr/include");
1245 // CodeScape IMG toolchain starting from v1.3.
1246 MultilibSet MtiMipsMultilibsV2;
1248 auto BeHard = makeMultilib("/mips-r2-hard")
1250 .flag("-msoft-float")
1253 auto BeSoft = makeMultilib("/mips-r2-soft")
1255 .flag("+msoft-float")
1256 .flag("-mnan=2008");
1257 auto ElHard = makeMultilib("/mipsel-r2-hard")
1259 .flag("-msoft-float")
1262 auto ElSoft = makeMultilib("/mipsel-r2-soft")
1264 .flag("+msoft-float")
1266 .flag("-mmicromips");
1267 auto BeHardNan = makeMultilib("/mips-r2-hard-nan2008")
1269 .flag("-msoft-float")
1272 auto ElHardNan = makeMultilib("/mipsel-r2-hard-nan2008")
1274 .flag("-msoft-float")
1277 .flag("-mmicromips");
1278 auto BeHardNanUclibc = makeMultilib("/mips-r2-hard-nan2008-uclibc")
1280 .flag("-msoft-float")
1283 auto ElHardNanUclibc = makeMultilib("/mipsel-r2-hard-nan2008-uclibc")
1285 .flag("-msoft-float")
1288 auto BeHardUclibc = makeMultilib("/mips-r2-hard-uclibc")
1290 .flag("-msoft-float")
1293 auto ElHardUclibc = makeMultilib("/mipsel-r2-hard-uclibc")
1295 .flag("-msoft-float")
1298 auto ElMicroHardNan = makeMultilib("/micromipsel-r2-hard-nan2008")
1300 .flag("-msoft-float")
1302 .flag("+mmicromips");
1303 auto ElMicroSoft = makeMultilib("/micromipsel-r2-soft")
1305 .flag("+msoft-float")
1307 .flag("+mmicromips");
1310 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1312 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1314 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1316 MtiMipsMultilibsV2 =
1318 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1319 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1320 ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1321 .Either(O32, N32, N64)
1322 .FilterOut(NonExistent)
1323 .setIncludeDirsCallback([](const Multilib &M) {
1324 return std::vector<std::string>({"/../../../../sysroot" +
1326 "/../usr/include"});
1328 .setFilePathsCallback([](const Multilib &M) {
1329 return std::vector<std::string>(
1330 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1333 for (auto Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1334 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1335 Result.Multilibs = *Candidate;
1342 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags,
1343 FilterNonExistent &NonExistent,
1344 DetectedMultilibs &Result) {
1345 // CodeScape IMG toolchain v1.2 and early.
1346 MultilibSet ImgMultilibsV1;
1348 auto Mips64r6 = makeMultilib("/mips64r6").flag("+m64").flag("-m32");
1350 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1353 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1359 .Maybe(LittleEndian)
1360 .FilterOut(NonExistent)
1361 .setIncludeDirsCallback([](const Multilib &M) {
1362 return std::vector<std::string>(
1363 {"/include", "/../../../../sysroot/usr/include"});
1367 // CodeScape IMG toolchain starting from v1.3.
1368 MultilibSet ImgMultilibsV2;
1370 auto BeHard = makeMultilib("/mips-r6-hard")
1372 .flag("-msoft-float")
1373 .flag("-mmicromips");
1374 auto BeSoft = makeMultilib("/mips-r6-soft")
1376 .flag("+msoft-float")
1377 .flag("-mmicromips");
1378 auto ElHard = makeMultilib("/mipsel-r6-hard")
1380 .flag("-msoft-float")
1381 .flag("-mmicromips");
1382 auto ElSoft = makeMultilib("/mipsel-r6-soft")
1384 .flag("+msoft-float")
1385 .flag("-mmicromips");
1386 auto BeMicroHard = makeMultilib("/micromips-r6-hard")
1388 .flag("-msoft-float")
1389 .flag("+mmicromips");
1390 auto BeMicroSoft = makeMultilib("/micromips-r6-soft")
1392 .flag("+msoft-float")
1393 .flag("+mmicromips");
1394 auto ElMicroHard = makeMultilib("/micromipsel-r6-hard")
1396 .flag("-msoft-float")
1397 .flag("+mmicromips");
1398 auto ElMicroSoft = makeMultilib("/micromipsel-r6-soft")
1400 .flag("+msoft-float")
1401 .flag("+mmicromips");
1404 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1406 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1408 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1412 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1413 ElMicroHard, ElMicroSoft})
1414 .Either(O32, N32, N64)
1415 .FilterOut(NonExistent)
1416 .setIncludeDirsCallback([](const Multilib &M) {
1417 return std::vector<std::string>({"/../../../../sysroot" +
1419 "/../usr/include"});
1421 .setFilePathsCallback([](const Multilib &M) {
1422 return std::vector<std::string>(
1423 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1426 for (auto Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1427 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1428 Result.Multilibs = *Candidate;
1435 bool clang::driver::findMIPSMultilibs(const Driver &D,
1436 const llvm::Triple &TargetTriple,
1437 StringRef Path, const ArgList &Args,
1438 DetectedMultilibs &Result) {
1439 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1443 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName);
1445 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1447 Multilib::flags_list Flags;
1448 addMultilibFlag(TargetTriple.isMIPS32(), "m32", Flags);
1449 addMultilibFlag(TargetTriple.isMIPS64(), "m64", Flags);
1450 addMultilibFlag(isMips16(Args), "mips16", Flags);
1451 addMultilibFlag(CPUName == "mips32", "march=mips32", Flags);
1452 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" ||
1453 CPUName == "mips32r5" || CPUName == "p5600",
1454 "march=mips32r2", Flags);
1455 addMultilibFlag(CPUName == "mips32r6", "march=mips32r6", Flags);
1456 addMultilibFlag(CPUName == "mips64", "march=mips64", Flags);
1457 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" ||
1458 CPUName == "mips64r5" || CPUName == "octeon" ||
1459 CPUName == "octeon+",
1460 "march=mips64r2", Flags);
1461 addMultilibFlag(CPUName == "mips64r6", "march=mips64r6", Flags);
1462 addMultilibFlag(isMicroMips(Args), "mmicromips", Flags);
1463 addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags);
1464 addMultilibFlag(tools::mips::isNaN2008(Args, TargetTriple), "mnan=2008",
1466 addMultilibFlag(ABIName == "n32", "mabi=n32", Flags);
1467 addMultilibFlag(ABIName == "n64", "mabi=n64", Flags);
1468 addMultilibFlag(isSoftFloatABI(Args), "msoft-float", Flags);
1469 addMultilibFlag(!isSoftFloatABI(Args), "mhard-float", Flags);
1470 addMultilibFlag(isMipsEL(TargetArch), "EL", Flags);
1471 addMultilibFlag(!isMipsEL(TargetArch), "EB", Flags);
1473 if (TargetTriple.isAndroid())
1474 return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent,
1477 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1478 TargetTriple.getOS() == llvm::Triple::Linux &&
1479 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1480 return findMipsMuslMultilibs(Flags, NonExistent, Result);
1482 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1483 TargetTriple.getOS() == llvm::Triple::Linux &&
1484 TargetTriple.isGNUEnvironment())
1485 return findMipsMtiMultilibs(Flags, NonExistent, Result);
1487 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1488 TargetTriple.getOS() == llvm::Triple::Linux &&
1489 TargetTriple.isGNUEnvironment())
1490 return findMipsImgMultilibs(Flags, NonExistent, Result);
1492 if (findMipsCsMultilibs(Flags, NonExistent, Result))
1495 // Fallback to the regular toolchain-tree structure.
1497 Result.Multilibs.push_back(Default);
1498 Result.Multilibs.FilterOut(NonExistent);
1500 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) {
1501 Result.BiarchSibling = Multilib();
1508 static void findAndroidArmMultilibs(const Driver &D,
1509 const llvm::Triple &TargetTriple,
1510 StringRef Path, const ArgList &Args,
1511 DetectedMultilibs &Result) {
1512 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1513 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1514 Multilib ArmV7Multilib = makeMultilib("/armv7-a")
1515 .flag("+march=armv7-a")
1517 Multilib ThumbMultilib = makeMultilib("/thumb")
1518 .flag("-march=armv7-a")
1520 Multilib ArmV7ThumbMultilib = makeMultilib("/armv7-a/thumb")
1521 .flag("+march=armv7-a")
1523 Multilib DefaultMultilib = makeMultilib("")
1524 .flag("-march=armv7-a")
1526 MultilibSet AndroidArmMultilibs =
1528 .Either(ThumbMultilib, ArmV7Multilib,
1529 ArmV7ThumbMultilib, DefaultMultilib)
1530 .FilterOut(NonExistent);
1532 Multilib::flags_list Flags;
1533 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ);
1534 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1535 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1536 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1537 bool IsThumbMode = IsThumbArch ||
1538 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) ||
1539 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB);
1540 bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1541 (llvm::ARM::parseArchVersion(Arch) == 7 ||
1542 (IsArmArch && Arch == "" && IsV7SubArch));
1543 addMultilibFlag(IsArmV7Mode, "march=armv7-a", Flags);
1544 addMultilibFlag(IsThumbMode, "mthumb", Flags);
1546 if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilib))
1547 Result.Multilibs = AndroidArmMultilibs;
1550 static bool findMSP430Multilibs(const Driver &D,
1551 const llvm::Triple &TargetTriple,
1552 StringRef Path, const ArgList &Args,
1553 DetectedMultilibs &Result) {
1554 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1555 Multilib MSP430Multilib = makeMultilib("/430");
1556 // FIXME: when clang starts to support msp430x ISA additional logic
1557 // to select between multilib must be implemented
1558 // Multilib MSP430xMultilib = makeMultilib("/large");
1560 Result.Multilibs.push_back(MSP430Multilib);
1561 Result.Multilibs.FilterOut(NonExistent);
1563 Multilib::flags_list Flags;
1564 if (Result.Multilibs.select(Flags, Result.SelectedMultilib))
1570 static void findRISCVBareMetalMultilibs(const Driver &D,
1571 const llvm::Triple &TargetTriple,
1572 StringRef Path, const ArgList &Args,
1573 DetectedMultilibs &Result) {
1574 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1575 struct RiscvMultilib {
1579 // currently only support the set of multilibs like riscv-gnu-toolchain does.
1580 // TODO: support MULTILIB_REUSE
1581 constexpr RiscvMultilib RISCVMultilibSet[] = {
1582 {"rv32i", "ilp32"}, {"rv32im", "ilp32"}, {"rv32iac", "ilp32"},
1583 {"rv32imac", "ilp32"}, {"rv32imafc", "ilp32f"}, {"rv64imac", "lp64"},
1584 {"rv64imafdc", "lp64d"}};
1586 std::vector<Multilib> Ms;
1587 for (auto Element : RISCVMultilibSet) {
1588 // multilib path rule is ${march}/${mabi}
1590 makeMultilib((Twine(Element.march) + "/" + Twine(Element.mabi)).str())
1591 .flag(Twine("+march=", Element.march).str())
1592 .flag(Twine("+mabi=", Element.mabi).str()));
1594 MultilibSet RISCVMultilibs =
1596 .Either(ArrayRef<Multilib>(Ms))
1597 .FilterOut(NonExistent)
1598 .setFilePathsCallback([](const Multilib &M) {
1599 return std::vector<std::string>(
1601 "/../../../../riscv64-unknown-elf/lib" + M.gccSuffix(),
1602 "/../../../../riscv32-unknown-elf/lib" + M.gccSuffix()});
1606 Multilib::flags_list Flags;
1607 llvm::StringSet<> Added_ABIs;
1608 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1609 StringRef MArch = tools::riscv::getRISCVArch(Args, TargetTriple);
1610 for (auto Element : RISCVMultilibSet) {
1611 addMultilibFlag(MArch == Element.march,
1612 Twine("march=", Element.march).str().c_str(), Flags);
1613 if (!Added_ABIs.count(Element.mabi)) {
1614 Added_ABIs.insert(Element.mabi);
1615 addMultilibFlag(ABIName == Element.mabi,
1616 Twine("mabi=", Element.mabi).str().c_str(), Flags);
1620 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib))
1621 Result.Multilibs = RISCVMultilibs;
1624 static void findRISCVMultilibs(const Driver &D,
1625 const llvm::Triple &TargetTriple, StringRef Path,
1626 const ArgList &Args, DetectedMultilibs &Result) {
1627 if (TargetTriple.getOS() == llvm::Triple::UnknownOS)
1628 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result);
1630 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1631 Multilib Ilp32 = makeMultilib("lib32/ilp32").flag("+m32").flag("+mabi=ilp32");
1633 makeMultilib("lib32/ilp32f").flag("+m32").flag("+mabi=ilp32f");
1635 makeMultilib("lib32/ilp32d").flag("+m32").flag("+mabi=ilp32d");
1636 Multilib Lp64 = makeMultilib("lib64/lp64").flag("+m64").flag("+mabi=lp64");
1637 Multilib Lp64f = makeMultilib("lib64/lp64f").flag("+m64").flag("+mabi=lp64f");
1638 Multilib Lp64d = makeMultilib("lib64/lp64d").flag("+m64").flag("+mabi=lp64d");
1639 MultilibSet RISCVMultilibs =
1641 .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d})
1642 .FilterOut(NonExistent);
1644 Multilib::flags_list Flags;
1645 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64;
1646 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1648 addMultilibFlag(!IsRV64, "m32", Flags);
1649 addMultilibFlag(IsRV64, "m64", Flags);
1650 addMultilibFlag(ABIName == "ilp32", "mabi=ilp32", Flags);
1651 addMultilibFlag(ABIName == "ilp32f", "mabi=ilp32f", Flags);
1652 addMultilibFlag(ABIName == "ilp32d", "mabi=ilp32d", Flags);
1653 addMultilibFlag(ABIName == "lp64", "mabi=lp64", Flags);
1654 addMultilibFlag(ABIName == "lp64f", "mabi=lp64f", Flags);
1655 addMultilibFlag(ABIName == "lp64d", "mabi=lp64d", Flags);
1657 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib))
1658 Result.Multilibs = RISCVMultilibs;
1661 static bool findBiarchMultilibs(const Driver &D,
1662 const llvm::Triple &TargetTriple,
1663 StringRef Path, const ArgList &Args,
1664 bool NeedsBiarchSuffix,
1665 DetectedMultilibs &Result) {
1668 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1669 // in what would normally be GCCInstallPath and put the 64-bit
1670 // libs in a subdirectory named 64. The simple logic we follow is that
1671 // *if* there is a subdirectory of the right name with crtbegin.o in it,
1672 // we use that. If not, and if not a biarch triple alias, we look for
1673 // crtbegin.o without the subdirectory.
1675 StringRef Suff64 = "/64";
1676 // Solaris uses platform-specific suffixes instead of /64.
1677 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
1678 switch (TargetTriple.getArch()) {
1679 case llvm::Triple::x86:
1680 case llvm::Triple::x86_64:
1683 case llvm::Triple::sparc:
1684 case llvm::Triple::sparcv9:
1685 Suff64 = "/sparcv9";
1692 Multilib Alt64 = Multilib()
1694 .includeSuffix(Suff64)
1698 Multilib Alt32 = Multilib()
1700 .includeSuffix("/32")
1704 Multilib Altx32 = Multilib()
1706 .includeSuffix("/x32")
1711 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
1712 FilterNonExistent NonExistent(
1713 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
1715 // Determine default multilib from: 32, 64, x32
1716 // Also handle cases such as 64 on 32, 32 on 64, etc.
1717 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
1718 const bool IsX32 = TargetTriple.getEnvironment() == llvm::Triple::GNUX32;
1719 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
1721 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
1723 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
1726 if (TargetTriple.isArch32Bit())
1727 Want = NeedsBiarchSuffix ? WANT64 : WANT32;
1729 Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
1731 Want = NeedsBiarchSuffix ? WANT32 : WANT64;
1735 Default.flag("+m32").flag("-m64").flag("-mx32");
1736 else if (Want == WANT64)
1737 Default.flag("-m32").flag("+m64").flag("-mx32");
1738 else if (Want == WANTX32)
1739 Default.flag("-m32").flag("-m64").flag("+mx32");
1743 Result.Multilibs.push_back(Default);
1744 Result.Multilibs.push_back(Alt64);
1745 Result.Multilibs.push_back(Alt32);
1746 Result.Multilibs.push_back(Altx32);
1748 Result.Multilibs.FilterOut(NonExistent);
1750 Multilib::flags_list Flags;
1751 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "m64", Flags);
1752 addMultilibFlag(TargetTriple.isArch32Bit(), "m32", Flags);
1753 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "mx32", Flags);
1755 if (!Result.Multilibs.select(Flags, Result.SelectedMultilib))
1758 if (Result.SelectedMultilib == Alt64 || Result.SelectedMultilib == Alt32 ||
1759 Result.SelectedMultilib == Altx32)
1760 Result.BiarchSibling = Default;
1765 /// Generic_GCC - A tool chain using the 'gcc' command to perform
1766 /// all subcommands; this relies on gcc translating the majority of
1767 /// command line options.
1769 /// Less-than for GCCVersion, implementing a Strict Weak Ordering.
1770 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
1772 StringRef RHSPatchSuffix) const {
1773 if (Major != RHSMajor)
1774 return Major < RHSMajor;
1775 if (Minor != RHSMinor)
1776 return Minor < RHSMinor;
1777 if (Patch != RHSPatch) {
1778 // Note that versions without a specified patch sort higher than those with
1785 // Otherwise just sort on the patch itself.
1786 return Patch < RHSPatch;
1788 if (PatchSuffix != RHSPatchSuffix) {
1789 // Sort empty suffixes higher.
1790 if (RHSPatchSuffix.empty())
1792 if (PatchSuffix.empty())
1795 // Provide a lexicographic sort to make this a total ordering.
1796 return PatchSuffix < RHSPatchSuffix;
1799 // The versions are equal.
1803 /// Parse a GCCVersion object out of a string of text.
1805 /// This is the primary means of forming GCCVersion objects.
1807 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) {
1808 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1809 std::pair<StringRef, StringRef> First = VersionText.split('.');
1810 std::pair<StringRef, StringRef> Second = First.second.split('.');
1812 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1813 if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0)
1815 GoodVersion.MajorStr = First.first.str();
1816 if (First.second.empty())
1818 StringRef MinorStr = Second.first;
1819 if (Second.second.empty()) {
1820 if (size_t EndNumber = MinorStr.find_first_not_of("0123456789")) {
1821 GoodVersion.PatchSuffix = std::string(MinorStr.substr(EndNumber));
1822 MinorStr = MinorStr.slice(0, EndNumber);
1825 if (MinorStr.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0)
1827 GoodVersion.MinorStr = MinorStr.str();
1829 // First look for a number prefix and parse that if present. Otherwise just
1830 // stash the entire patch string in the suffix, and leave the number
1831 // unspecified. This covers versions strings such as:
1832 // 5 (handled above)
1839 // And retains any patch number it finds.
1840 StringRef PatchText = Second.second;
1841 if (!PatchText.empty()) {
1842 if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) {
1843 // Try to parse the number and any suffix.
1844 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) ||
1845 GoodVersion.Patch < 0)
1847 GoodVersion.PatchSuffix = std::string(PatchText.substr(EndNumber));
1854 static llvm::StringRef getGCCToolchainDir(const ArgList &Args,
1855 llvm::StringRef SysRoot) {
1856 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain);
1858 return A->getValue();
1860 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX.
1861 // GCC_INSTALL_PREFIX specifies the gcc installation for the default
1862 // sysroot and is likely not valid with a different sysroot.
1863 if (!SysRoot.empty())
1866 return GCC_INSTALL_PREFIX;
1869 /// Initialize a GCCInstallationDetector from the driver.
1871 /// This performs all of the autodetection and sets up the various paths.
1872 /// Once constructed, a GCCInstallationDetector is essentially immutable.
1874 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
1875 /// should instead pull the target out of the driver. This is currently
1876 /// necessary because the driver doesn't store the final version of the target
1878 void Generic_GCC::GCCInstallationDetector::init(
1879 const llvm::Triple &TargetTriple, const ArgList &Args,
1880 ArrayRef<std::string> ExtraTripleAliases) {
1881 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
1882 ? TargetTriple.get64BitArchVariant()
1883 : TargetTriple.get32BitArchVariant();
1884 // The library directories which may contain GCC installations.
1885 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
1886 // The compatible GCC triples for this particular architecture.
1887 SmallVector<StringRef, 16> CandidateTripleAliases;
1888 SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
1889 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs,
1890 CandidateTripleAliases, CandidateBiarchLibDirs,
1891 CandidateBiarchTripleAliases);
1893 // Compute the set of prefixes for our search.
1894 SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(),
1895 D.PrefixDirs.end());
1897 StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot);
1898 if (GCCToolchainDir != "") {
1899 if (GCCToolchainDir.back() == '/')
1900 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
1902 Prefixes.push_back(std::string(GCCToolchainDir));
1904 // If we have a SysRoot, try that first.
1905 if (!D.SysRoot.empty()) {
1906 Prefixes.push_back(D.SysRoot);
1907 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
1910 // Then look for gcc installed alongside clang.
1911 Prefixes.push_back(D.InstalledDir + "/..");
1913 // Next, look for prefix(es) that correspond to distribution-supplied gcc
1915 if (D.SysRoot.empty()) {
1917 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
1921 // Try to respect gcc-config on Gentoo. However, do that only
1922 // if --gcc-toolchain is not provided or equal to the Gentoo install
1923 // in /usr. This avoids accidentally enforcing the system GCC version
1924 // when using a custom toolchain.
1925 if (GCCToolchainDir == "" || GCCToolchainDir == D.SysRoot + "/usr") {
1926 SmallVector<StringRef, 16> GentooTestTriples;
1927 // Try to match an exact triple as target triple first.
1928 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for
1929 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu"
1930 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching
1931 // triple x86_64-gentoo-linux-gnu is present.
1932 GentooTestTriples.push_back(TargetTriple.str());
1933 // Check rest of triples.
1934 GentooTestTriples.append(ExtraTripleAliases.begin(),
1935 ExtraTripleAliases.end());
1936 GentooTestTriples.append(CandidateTripleAliases.begin(),
1937 CandidateTripleAliases.end());
1938 if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples,
1939 CandidateBiarchTripleAliases))
1943 // Loop over the various components which exist and select the best GCC
1944 // installation available. GCC installs are ranked by version number.
1945 Version = GCCVersion::Parse("0.0.0");
1946 for (const std::string &Prefix : Prefixes) {
1947 if (!D.getVFS().exists(Prefix))
1949 for (StringRef Suffix : CandidateLibDirs) {
1950 const std::string LibDir = Prefix + Suffix.str();
1951 if (!D.getVFS().exists(LibDir))
1953 // Try to match the exact target triple first.
1954 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, TargetTriple.str());
1955 // Try rest of possible triples.
1956 for (StringRef Candidate : ExtraTripleAliases) // Try these first.
1957 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
1958 for (StringRef Candidate : CandidateTripleAliases)
1959 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
1961 for (StringRef Suffix : CandidateBiarchLibDirs) {
1962 const std::string LibDir = Prefix + Suffix.str();
1963 if (!D.getVFS().exists(LibDir))
1965 for (StringRef Candidate : CandidateBiarchTripleAliases)
1966 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate,
1967 /*NeedsBiarchSuffix=*/ true);
1972 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
1973 for (const auto &InstallPath : CandidateGCCInstallPaths)
1974 OS << "Found candidate GCC installation: " << InstallPath << "\n";
1976 if (!GCCInstallPath.empty())
1977 OS << "Selected GCC installation: " << GCCInstallPath << "\n";
1979 for (const auto &Multilib : Multilibs)
1980 OS << "Candidate multilib: " << Multilib << "\n";
1982 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault())
1983 OS << "Selected multilib: " << SelectedMultilib << "\n";
1986 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const {
1987 if (BiarchSibling.hasValue()) {
1988 M = BiarchSibling.getValue();
1994 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
1995 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes,
1996 StringRef SysRoot) {
1997 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
1998 // Solaris is a special case.
1999 // The GCC installation is under
2000 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/
2001 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with
2002 // /usr/gcc/<version> as a prefix.
2004 std::string PrefixDir = SysRoot.str() + "/usr/gcc";
2006 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC),
2008 !EC && LI != LE; LI = LI.increment(EC)) {
2009 StringRef VersionText = llvm::sys::path::filename(LI->path());
2010 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2012 // Filter out obviously bad entries.
2013 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1))
2016 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str();
2017 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc";
2018 if (!D.getVFS().exists(CandidateLibPath))
2021 Prefixes.push_back(CandidatePrefix);
2026 // Non-Solaris is much simpler - most systems just go with "/usr".
2027 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux) {
2028 // Yet, still look for RHEL devtoolsets.
2029 Prefixes.push_back("/opt/rh/devtoolset-9/root/usr");
2030 Prefixes.push_back("/opt/rh/devtoolset-8/root/usr");
2031 Prefixes.push_back("/opt/rh/devtoolset-7/root/usr");
2032 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr");
2033 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr");
2034 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr");
2035 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr");
2037 Prefixes.push_back(SysRoot.str() + "/usr");
2040 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
2041 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
2042 SmallVectorImpl<StringRef> &LibDirs,
2043 SmallVectorImpl<StringRef> &TripleAliases,
2044 SmallVectorImpl<StringRef> &BiarchLibDirs,
2045 SmallVectorImpl<StringRef> &BiarchTripleAliases) {
2046 // Declare a bunch of static data sets that we'll select between below. These
2047 // are specifically designed to always refer to string literals to avoid any
2048 // lifetime or initialization issues.
2049 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
2050 static const char *const AArch64Triples[] = {
2051 "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-redhat-linux",
2052 "aarch64-suse-linux", "aarch64-linux-android"};
2053 static const char *const AArch64beLibDirs[] = {"/lib"};
2054 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu",
2055 "aarch64_be-linux-gnu"};
2057 static const char *const ARMLibDirs[] = {"/lib"};
2058 static const char *const ARMTriples[] = {"arm-linux-gnueabi",
2059 "arm-linux-androideabi"};
2060 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
2061 "armv7hl-redhat-linux-gnueabi",
2062 "armv6hl-suse-linux-gnueabi",
2063 "armv7hl-suse-linux-gnueabi"};
2064 static const char *const ARMebLibDirs[] = {"/lib"};
2065 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi",
2066 "armeb-linux-androideabi"};
2067 static const char *const ARMebHFTriples[] = {
2068 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
2070 static const char *const AVRLibDirs[] = {"/lib"};
2071 static const char *const AVRTriples[] = {"avr"};
2073 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
2074 static const char *const X86_64Triples[] = {
2075 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
2076 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
2077 "x86_64-redhat-linux", "x86_64-suse-linux",
2078 "x86_64-manbo-linux-gnu", "x86_64-linux-gnu",
2079 "x86_64-slackware-linux", "x86_64-unknown-linux",
2080 "x86_64-amazon-linux", "x86_64-linux-android"};
2081 static const char *const X32LibDirs[] = {"/libx32"};
2082 static const char *const X86LibDirs[] = {"/lib32", "/lib"};
2083 static const char *const X86Triples[] = {
2084 "i686-linux-gnu", "i686-pc-linux-gnu", "i486-linux-gnu",
2085 "i386-linux-gnu", "i386-redhat-linux6E", "i686-redhat-linux",
2086 "i586-redhat-linux", "i386-redhat-linux", "i586-suse-linux",
2087 "i486-slackware-linux", "i686-montavista-linux", "i586-linux-gnu",
2088 "i686-linux-android", "i386-gnu", "i486-gnu",
2089 "i586-gnu", "i686-gnu"};
2091 static const char *const MIPSLibDirs[] = {"/lib"};
2092 static const char *const MIPSTriples[] = {
2093 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu",
2094 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"};
2095 static const char *const MIPSELLibDirs[] = {"/lib"};
2096 static const char *const MIPSELTriples[] = {
2097 "mipsel-linux-gnu", "mips-img-linux-gnu", "mipsisa32r6el-linux-gnu",
2098 "mipsel-linux-android"};
2100 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
2101 static const char *const MIPS64Triples[] = {
2102 "mips64-linux-gnu", "mips-mti-linux-gnu",
2103 "mips-img-linux-gnu", "mips64-linux-gnuabi64",
2104 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"};
2105 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
2106 static const char *const MIPS64ELTriples[] = {
2107 "mips64el-linux-gnu", "mips-mti-linux-gnu",
2108 "mips-img-linux-gnu", "mips64el-linux-gnuabi64",
2109 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64",
2110 "mips64el-linux-android"};
2112 static const char *const MIPSN32LibDirs[] = {"/lib32"};
2113 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32",
2114 "mipsisa64r6-linux-gnuabin32"};
2115 static const char *const MIPSN32ELLibDirs[] = {"/lib32"};
2116 static const char *const MIPSN32ELTriples[] = {
2117 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"};
2119 static const char *const MSP430LibDirs[] = {"/lib"};
2120 static const char *const MSP430Triples[] = {"msp430-elf"};
2122 static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
2123 static const char *const PPCTriples[] = {
2124 "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe",
2125 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a
2126 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux".
2127 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"};
2128 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
2129 static const char *const PPC64Triples[] = {
2130 "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu",
2131 "powerpc64-suse-linux", "ppc64-redhat-linux"};
2132 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
2133 static const char *const PPC64LETriples[] = {
2134 "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu",
2135 "powerpc64le-suse-linux", "ppc64le-redhat-linux"};
2137 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"};
2138 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu",
2139 "riscv32-linux-gnu",
2140 "riscv32-unknown-elf"};
2141 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"};
2142 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu",
2143 "riscv64-linux-gnu",
2144 "riscv64-unknown-elf",
2145 "riscv64-redhat-linux",
2146 "riscv64-suse-linux"};
2148 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
2149 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
2150 "sparcv8-linux-gnu"};
2151 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
2152 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
2153 "sparcv9-linux-gnu"};
2155 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
2156 static const char *const SystemZTriples[] = {
2157 "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu",
2158 "s390x-suse-linux", "s390x-redhat-linux"};
2164 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
2165 static const char *const SolarisLibDirs[] = {"/lib"};
2166 static const char *const SolarisSparcV8Triples[] = {
2167 "sparc-sun-solaris2.11", "sparc-sun-solaris2.12"};
2168 static const char *const SolarisSparcV9Triples[] = {
2169 "sparcv9-sun-solaris2.11", "sparcv9-sun-solaris2.12"};
2170 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11",
2171 "i386-pc-solaris2.12"};
2172 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11",
2173 "x86_64-pc-solaris2.12"};
2174 LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
2175 BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
2176 switch (TargetTriple.getArch()) {
2177 case llvm::Triple::x86:
2178 TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples));
2179 BiarchTripleAliases.append(begin(SolarisX86_64Triples),
2180 end(SolarisX86_64Triples));
2182 case llvm::Triple::x86_64:
2183 TripleAliases.append(begin(SolarisX86_64Triples),
2184 end(SolarisX86_64Triples));
2185 BiarchTripleAliases.append(begin(SolarisX86Triples),
2186 end(SolarisX86Triples));
2188 case llvm::Triple::sparc:
2189 TripleAliases.append(begin(SolarisSparcV8Triples),
2190 end(SolarisSparcV8Triples));
2191 BiarchTripleAliases.append(begin(SolarisSparcV9Triples),
2192 end(SolarisSparcV9Triples));
2194 case llvm::Triple::sparcv9:
2195 TripleAliases.append(begin(SolarisSparcV9Triples),
2196 end(SolarisSparcV9Triples));
2197 BiarchTripleAliases.append(begin(SolarisSparcV8Triples),
2198 end(SolarisSparcV8Triples));
2206 // Android targets should not use GNU/Linux tools or libraries.
2207 if (TargetTriple.isAndroid()) {
2208 static const char *const AArch64AndroidTriples[] = {
2209 "aarch64-linux-android"};
2210 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"};
2211 static const char *const MIPSELAndroidTriples[] = {"mipsel-linux-android"};
2212 static const char *const MIPS64ELAndroidTriples[] = {
2213 "mips64el-linux-android"};
2214 static const char *const X86AndroidTriples[] = {"i686-linux-android"};
2215 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"};
2217 switch (TargetTriple.getArch()) {
2218 case llvm::Triple::aarch64:
2219 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2220 TripleAliases.append(begin(AArch64AndroidTriples),
2221 end(AArch64AndroidTriples));
2223 case llvm::Triple::arm:
2224 case llvm::Triple::thumb:
2225 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2226 TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples));
2228 case llvm::Triple::mipsel:
2229 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2230 TripleAliases.append(begin(MIPSELAndroidTriples),
2231 end(MIPSELAndroidTriples));
2232 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2233 BiarchTripleAliases.append(begin(MIPS64ELAndroidTriples),
2234 end(MIPS64ELAndroidTriples));
2236 case llvm::Triple::mips64el:
2237 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2238 TripleAliases.append(begin(MIPS64ELAndroidTriples),
2239 end(MIPS64ELAndroidTriples));
2240 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2241 BiarchTripleAliases.append(begin(MIPSELAndroidTriples),
2242 end(MIPSELAndroidTriples));
2244 case llvm::Triple::x86_64:
2245 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2246 TripleAliases.append(begin(X86_64AndroidTriples),
2247 end(X86_64AndroidTriples));
2248 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2249 BiarchTripleAliases.append(begin(X86AndroidTriples),
2250 end(X86AndroidTriples));
2252 case llvm::Triple::x86:
2253 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2254 TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples));
2255 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2256 BiarchTripleAliases.append(begin(X86_64AndroidTriples),
2257 end(X86_64AndroidTriples));
2266 switch (TargetTriple.getArch()) {
2267 case llvm::Triple::aarch64:
2268 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2269 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2270 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2271 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2273 case llvm::Triple::aarch64_be:
2274 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2275 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2276 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2277 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2279 case llvm::Triple::arm:
2280 case llvm::Triple::thumb:
2281 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2282 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
2283 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples));
2285 TripleAliases.append(begin(ARMTriples), end(ARMTriples));
2288 case llvm::Triple::armeb:
2289 case llvm::Triple::thumbeb:
2290 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs));
2291 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
2292 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples));
2294 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples));
2297 case llvm::Triple::avr:
2298 LibDirs.append(begin(AVRLibDirs), end(AVRLibDirs));
2299 TripleAliases.append(begin(AVRTriples), end(AVRTriples));
2301 case llvm::Triple::x86_64:
2302 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2303 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2304 // x32 is always available when x86_64 is available, so adding it as
2305 // secondary arch with x86_64 triples
2306 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32) {
2307 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2308 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2310 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2311 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples));
2314 case llvm::Triple::x86:
2315 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2316 // MCU toolchain is 32 bit only and its triple alias is TargetTriple
2317 // itself, which will be appended below.
2318 if (!TargetTriple.isOSIAMCU()) {
2319 TripleAliases.append(begin(X86Triples), end(X86Triples));
2320 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2321 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2324 case llvm::Triple::mips:
2325 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2326 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2327 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2328 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2329 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2330 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2332 case llvm::Triple::mipsel:
2333 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2334 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2335 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2336 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2337 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2338 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2339 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2341 case llvm::Triple::mips64:
2342 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2343 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2344 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2345 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2346 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2347 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2349 case llvm::Triple::mips64el:
2350 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2351 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2352 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2353 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2354 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2355 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2356 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2358 case llvm::Triple::msp430:
2359 LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs));
2360 TripleAliases.append(begin(MSP430Triples), end(MSP430Triples));
2362 case llvm::Triple::ppc:
2363 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2364 TripleAliases.append(begin(PPCTriples), end(PPCTriples));
2365 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2366 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2368 case llvm::Triple::ppc64:
2369 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2370 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2371 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2372 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples));
2374 case llvm::Triple::ppc64le:
2375 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
2376 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
2378 case llvm::Triple::riscv32:
2379 LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2380 TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
2381 BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
2382 BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
2384 case llvm::Triple::riscv64:
2385 LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
2386 TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
2387 BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2388 BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
2390 case llvm::Triple::sparc:
2391 case llvm::Triple::sparcel:
2392 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2393 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2394 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2395 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2397 case llvm::Triple::sparcv9:
2398 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2399 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2400 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2401 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2403 case llvm::Triple::systemz:
2404 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs));
2405 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples));
2408 // By default, just rely on the standard lib directories and the original
2413 // Always append the drivers target triple to the end, in case it doesn't
2414 // match any of our aliases.
2415 TripleAliases.push_back(TargetTriple.str());
2417 // Also include the multiarch variant if it's different.
2418 if (TargetTriple.str() != BiarchTriple.str())
2419 BiarchTripleAliases.push_back(BiarchTriple.str());
2422 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2423 const llvm::Triple &TargetTriple, const ArgList &Args,
2424 StringRef Path, bool NeedsBiarchSuffix) {
2425 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2426 DetectedMultilibs Detected;
2428 // Android standalone toolchain could have multilibs for ARM and Thumb.
2429 // Debian mips multilibs behave more like the rest of the biarch ones,
2430 // so handle them there
2431 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) {
2432 // It should also work without multilibs in a simplified toolchain.
2433 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected);
2434 } else if (TargetTriple.isMIPS()) {
2435 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected))
2437 } else if (TargetTriple.isRISCV()) {
2438 findRISCVMultilibs(D, TargetTriple, Path, Args, Detected);
2439 } else if (isMSP430(TargetArch)) {
2440 findMSP430Multilibs(D, TargetTriple, Path, Args, Detected);
2441 } else if (TargetArch == llvm::Triple::avr) {
2442 // AVR has no multilibs.
2443 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2444 NeedsBiarchSuffix, Detected)) {
2448 Multilibs = Detected.Multilibs;
2449 SelectedMultilib = Detected.SelectedMultilib;
2450 BiarchSibling = Detected.BiarchSibling;
2455 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2456 const llvm::Triple &TargetTriple, const ArgList &Args,
2457 const std::string &LibDir, StringRef CandidateTriple,
2458 bool NeedsBiarchSuffix) {
2459 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2460 // Locations relative to the system lib directory where GCC's triple-specific
2461 // directories might reside.
2462 struct GCCLibSuffix {
2463 // Path from system lib directory to GCC triple-specific directory.
2464 std::string LibSuffix;
2465 // Path from GCC triple-specific directory back to system lib directory.
2466 // This is one '..' component per component in LibSuffix.
2467 StringRef ReversePath;
2468 // Whether this library suffix is relevant for the triple.
2471 // This is the normal place.
2472 {"gcc/" + CandidateTriple.str(), "../..", true},
2474 // Debian puts cross-compilers in gcc-cross.
2475 {"gcc-cross/" + CandidateTriple.str(), "../..",
2476 TargetTriple.getOS() != llvm::Triple::Solaris},
2478 // The Freescale PPC SDK has the gcc libraries in
2479 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2480 // this on Freescale triples, though, since some systems put a *lot* of
2481 // files in that location, not just GCC installation data.
2482 {CandidateTriple.str(), "..",
2483 TargetTriple.getVendor() == llvm::Triple::Freescale ||
2484 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded},
2486 // Natively multiarch systems sometimes put the GCC triple-specific
2487 // directory within their multiarch lib directory, resulting in the
2488 // triple appearing twice.
2489 {CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), "../../..",
2490 TargetTriple.getOS() != llvm::Triple::Solaris},
2492 // Deal with cases (on Ubuntu) where the system architecture could be i386
2493 // but the GCC target architecture could be (say) i686.
2494 // FIXME: It may be worthwhile to generalize this and look for a second
2496 {"i386-linux-gnu/gcc/" + CandidateTriple.str(), "../../..",
2497 (TargetArch == llvm::Triple::x86 &&
2498 TargetTriple.getOS() != llvm::Triple::Solaris)},
2499 {"i386-gnu/gcc/" + CandidateTriple.str(), "../../..",
2500 (TargetArch == llvm::Triple::x86 &&
2501 TargetTriple.getOS() != llvm::Triple::Solaris)}};
2503 for (auto &Suffix : Suffixes) {
2507 StringRef LibSuffix = Suffix.LibSuffix;
2509 for (llvm::vfs::directory_iterator
2510 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC),
2512 !EC && LI != LE; LI = LI.increment(EC)) {
2513 StringRef VersionText = llvm::sys::path::filename(LI->path());
2514 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2515 if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2516 if (!CandidateGCCInstallPaths.insert(std::string(LI->path())).second)
2517 continue; // Saw this path before; no need to look at it again.
2518 if (CandidateVersion.isOlderThan(4, 1, 1))
2520 if (CandidateVersion <= Version)
2523 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(),
2527 Version = CandidateVersion;
2528 GCCTriple.setTriple(CandidateTriple);
2529 // FIXME: We hack together the directory name here instead of
2530 // using LI to ensure stable path separators across Windows and
2532 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2533 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str();
2539 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs(
2540 const llvm::Triple &TargetTriple, const ArgList &Args,
2541 const SmallVectorImpl<StringRef> &CandidateTriples,
2542 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) {
2543 for (StringRef CandidateTriple : CandidateTriples) {
2544 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
2548 for (StringRef CandidateTriple : CandidateBiarchTriples) {
2549 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true))
2555 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2556 const llvm::Triple &TargetTriple, const ArgList &Args,
2557 StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2558 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2559 D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/config-" +
2560 CandidateTriple.str());
2562 SmallVector<StringRef, 2> Lines;
2563 File.get()->getBuffer().split(Lines, "\n");
2564 for (StringRef Line : Lines) {
2566 // CURRENT=triple-version
2567 if (!Line.consume_front("CURRENT="))
2569 // Process the config file pointed to by CURRENT.
2570 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile =
2571 D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/" +
2573 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-');
2574 // List of paths to scan for libraries.
2575 SmallVector<StringRef, 4> GentooScanPaths;
2576 // Scan the Config file to find installed GCC libraries path.
2577 // Typical content of the GCC config file:
2578 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/
2579 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32"
2580 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man"
2581 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info"
2582 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4"
2583 // We are looking for the paths listed in LDPATH=... .
2585 SmallVector<StringRef, 2> ConfigLines;
2586 ConfigFile.get()->getBuffer().split(ConfigLines, "\n");
2587 for (StringRef ConfLine : ConfigLines) {
2588 ConfLine = ConfLine.trim();
2589 if (ConfLine.consume_front("LDPATH=")) {
2590 // Drop '"' from front and back if present.
2591 ConfLine.consume_back("\"");
2592 ConfLine.consume_front("\"");
2593 // Get all paths sperated by ':'
2594 ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false);
2598 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}.
2599 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/"
2600 + ActiveVersion.second.str();
2601 GentooScanPaths.push_back(StringRef(basePath));
2603 // Scan all paths for GCC libraries.
2604 for (const auto &GentooScanPath : GentooScanPaths) {
2605 std::string GentooPath = D.SysRoot + std::string(GentooScanPath);
2606 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) {
2607 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath,
2611 Version = GCCVersion::Parse(ActiveVersion.second);
2612 GCCInstallPath = GentooPath;
2613 GCCParentLibPath = GentooPath + std::string("/../../..");
2614 GCCTriple.setTriple(ActiveVersion.first);
2625 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
2626 const ArgList &Args)
2627 : ToolChain(D, Triple, Args), GCCInstallation(D),
2628 CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args) {
2629 getProgramPaths().push_back(getDriver().getInstalledDir());
2630 if (getDriver().getInstalledDir() != getDriver().Dir)
2631 getProgramPaths().push_back(getDriver().Dir);
2634 Generic_GCC::~Generic_GCC() {}
2636 Tool *Generic_GCC::getTool(Action::ActionClass AC) const {
2638 case Action::PreprocessJobClass:
2640 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this));
2641 return Preprocess.get();
2642 case Action::CompileJobClass:
2644 Compile.reset(new tools::gcc::Compiler(*this));
2645 return Compile.get();
2647 return ToolChain::getTool(AC);
2651 Tool *Generic_GCC::buildAssembler() const {
2652 return new tools::gnutools::Assembler(*this);
2655 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
2657 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
2658 // Print the information about how we detected the GCC installation.
2659 GCCInstallation.print(OS);
2660 CudaInstallation.print(OS);
2661 RocmInstallation.print(OS);
2664 bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const {
2665 return getArch() == llvm::Triple::x86_64;
2668 bool Generic_GCC::isPICDefault() const {
2669 switch (getArch()) {
2670 case llvm::Triple::x86_64:
2671 return getTriple().isOSWindows();
2672 case llvm::Triple::mips64:
2673 case llvm::Triple::mips64el:
2680 bool Generic_GCC::isPIEDefault() const { return false; }
2682 bool Generic_GCC::isPICDefaultForced() const {
2683 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
2686 bool Generic_GCC::IsIntegratedAssemblerDefault() const {
2687 switch (getTriple().getArch()) {
2688 case llvm::Triple::x86:
2689 case llvm::Triple::x86_64:
2690 case llvm::Triple::aarch64:
2691 case llvm::Triple::aarch64_be:
2692 case llvm::Triple::arm:
2693 case llvm::Triple::armeb:
2694 case llvm::Triple::avr:
2695 case llvm::Triple::bpfel:
2696 case llvm::Triple::bpfeb:
2697 case llvm::Triple::thumb:
2698 case llvm::Triple::thumbeb:
2699 case llvm::Triple::ppc:
2700 case llvm::Triple::ppc64:
2701 case llvm::Triple::ppc64le:
2702 case llvm::Triple::riscv32:
2703 case llvm::Triple::riscv64:
2704 case llvm::Triple::systemz:
2705 case llvm::Triple::mips:
2706 case llvm::Triple::mipsel:
2707 case llvm::Triple::mips64:
2708 case llvm::Triple::mips64el:
2709 case llvm::Triple::msp430:
2711 case llvm::Triple::sparc:
2712 case llvm::Triple::sparcel:
2713 case llvm::Triple::sparcv9:
2714 if (getTriple().isOSFreeBSD() || getTriple().isOSOpenBSD() ||
2715 getTriple().isOSSolaris())
2723 static void addMultilibsFilePaths(const Driver &D, const MultilibSet &Multilibs,
2724 const Multilib &Multilib,
2725 StringRef InstallPath,
2726 ToolChain::path_list &Paths) {
2727 if (const auto &PathsCallback = Multilibs.filePathsCallback())
2728 for (const auto &Path : PathsCallback(Multilib))
2729 addPathIfExists(D, InstallPath + Path, Paths);
2732 void Generic_GCC::PushPPaths(ToolChain::path_list &PPaths) {
2733 // Cross-compiling binutils and GCC installations (vanilla and openSUSE at
2734 // least) put various tools in a triple-prefixed directory off of the parent
2735 // of the GCC installation. We use the GCC triple here to ensure that we end
2736 // up with tools that support the same amount of cross compiling as the
2737 // detected GCC installation. For example, if we find a GCC installation
2738 // targeting x86_64, but it is a bi-arch GCC installation, it can also be
2739 // used to target i386.
2740 if (GCCInstallation.isValid()) {
2741 PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" +
2742 GCCInstallation.getTriple().str() + "/bin")
2747 void Generic_GCC::AddMultilibPaths(const Driver &D,
2748 const std::string &SysRoot,
2749 const std::string &OSLibDir,
2750 const std::string &MultiarchTriple,
2752 // Add the multilib suffixed paths where they are available.
2753 if (GCCInstallation.isValid()) {
2754 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
2755 const std::string &LibPath =
2756 std::string(GCCInstallation.getParentLibPath());
2758 // Add toolchain / multilib specific file paths.
2759 addMultilibsFilePaths(D, Multilibs, SelectedMultilib,
2760 GCCInstallation.getInstallPath(), Paths);
2762 // Sourcery CodeBench MIPS toolchain holds some libraries under
2763 // a biarch-like suffix of the GCC installation.
2765 D, GCCInstallation.getInstallPath() + SelectedMultilib.gccSuffix(),
2768 // GCC cross compiling toolchains will install target libraries which ship
2769 // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as
2770 // any part of the GCC installation in
2771 // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat
2772 // debatable, but is the reality today. We need to search this tree even
2773 // when we have a sysroot somewhere else. It is the responsibility of
2774 // whomever is doing the cross build targeting a sysroot using a GCC
2775 // installation that is *not* within the system root to ensure two things:
2777 // 1) Any DSOs that are linked in from this tree or from the install path
2778 // above must be present on the system root and found via an
2779 // appropriate rpath.
2780 // 2) There must not be libraries installed into
2781 // <prefix>/<triple>/<libdir> unless they should be preferred over
2782 // those within the system root.
2784 // Note that this matches the GCC behavior. See the below comment for where
2785 // Clang diverges from GCC's behavior.
2787 LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir +
2788 SelectedMultilib.osSuffix(),
2791 // If the GCC installation we found is inside of the sysroot, we want to
2792 // prefer libraries installed in the parent prefix of the GCC installation.
2793 // It is important to *not* use these paths when the GCC installation is
2794 // outside of the system root as that can pick up unintended libraries.
2795 // This usually happens when there is an external cross compiler on the
2796 // host system, and a more minimal sysroot available that is the target of
2797 // the cross. Note that GCC does include some of these directories in some
2798 // configurations but this seems somewhere between questionable and simply
2800 if (StringRef(LibPath).startswith(SysRoot)) {
2801 addPathIfExists(D, LibPath + "/" + MultiarchTriple, Paths);
2802 addPathIfExists(D, LibPath + "/../" + OSLibDir, Paths);
2807 void Generic_GCC::AddMultiarchPaths(const Driver &D,
2808 const std::string &SysRoot,
2809 const std::string &OSLibDir,
2811 // Try walking via the GCC triple path in case of biarch or multiarch GCC
2812 // installations with strange symlinks.
2813 if (GCCInstallation.isValid()) {
2815 SysRoot + "/usr/lib/" + GCCInstallation.getTriple().str() +
2816 "/../../" + OSLibDir,
2819 // Add the 'other' biarch variant path
2820 Multilib BiarchSibling;
2821 if (GCCInstallation.getBiarchSibling(BiarchSibling)) {
2823 D, GCCInstallation.getInstallPath() + BiarchSibling.gccSuffix(),
2827 // See comments above on the multilib variant for details of why this is
2828 // included even from outside the sysroot.
2829 const std::string &LibPath =
2830 std::string(GCCInstallation.getParentLibPath());
2831 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
2832 const Multilib &Multilib = GCCInstallation.getMultilib();
2834 D, LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(),
2837 // See comments above on the multilib variant for details of why this is
2838 // only included from within the sysroot.
2839 if (StringRef(LibPath).startswith(SysRoot))
2840 addPathIfExists(D, LibPath, Paths);
2844 void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs,
2845 ArgStringList &CC1Args) const {
2846 // Add include directories specific to the selected multilib set and multilib.
2847 if (GCCInstallation.isValid()) {
2848 const auto &Callback = Multilibs.includeDirsCallback();
2850 for (const auto &Path : Callback(GCCInstallation.getMultilib()))
2851 addExternCSystemIncludeIfExists(
2852 DriverArgs, CC1Args, GCCInstallation.getInstallPath() + Path);
2857 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
2858 ArgStringList &CC1Args) const {
2859 if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
2860 DriverArgs.hasArg(options::OPT_nostdincxx))
2863 switch (GetCXXStdlibType(DriverArgs)) {
2864 case ToolChain::CST_Libcxx:
2865 addLibCxxIncludePaths(DriverArgs, CC1Args);
2868 case ToolChain::CST_Libstdcxx:
2869 addLibStdCxxIncludePaths(DriverArgs, CC1Args);
2874 static std::string DetectLibcxxIncludePath(llvm::vfs::FileSystem &vfs,
2878 std::string MaxVersionString;
2879 for (llvm::vfs::directory_iterator LI = vfs.dir_begin(base, EC), LE;
2880 !EC && LI != LE; LI = LI.increment(EC)) {
2881 StringRef VersionText = llvm::sys::path::filename(LI->path());
2883 if (VersionText[0] == 'v' &&
2884 !VersionText.slice(1, StringRef::npos).getAsInteger(10, Version)) {
2885 if (Version > MaxVersion) {
2886 MaxVersion = Version;
2887 MaxVersionString = std::string(VersionText);
2891 return MaxVersion ? (base + "/" + MaxVersionString).str() : "";
2895 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
2896 llvm::opt::ArgStringList &CC1Args) const {
2897 auto AddIncludePath = [&](std::string Path) {
2898 std::string IncludePath = DetectLibcxxIncludePath(getVFS(), Path);
2899 if (IncludePath.empty() || !getVFS().exists(IncludePath))
2901 addSystemInclude(DriverArgs, CC1Args, IncludePath);
2904 // Android never uses the libc++ headers installed alongside the toolchain,
2905 // which are generally incompatible with the NDK libraries anyway.
2906 if (!getTriple().isAndroid())
2907 if (AddIncludePath(getDriver().Dir + "/../include/c++"))
2909 // If this is a development, non-installed, clang, libcxx will
2910 // not be found at ../include/c++ but it likely to be found at
2911 // one of the following two locations:
2912 std::string SysRoot = computeSysRoot();
2913 if (AddIncludePath(SysRoot + "/usr/local/include/c++"))
2915 if (AddIncludePath(SysRoot + "/usr/include/c++"))
2919 /// Helper to add the variant paths of a libstdc++ installation.
2920 bool Generic_GCC::addLibStdCXXIncludePaths(
2921 Twine Base, Twine Suffix, StringRef GCCTriple, StringRef GCCMultiarchTriple,
2922 StringRef TargetMultiarchTriple, Twine IncludeSuffix,
2923 const ArgList &DriverArgs, ArgStringList &CC1Args) const {
2924 if (!getVFS().exists(Base + Suffix))
2927 addSystemInclude(DriverArgs, CC1Args, Base + Suffix);
2929 // The vanilla GCC layout of libstdc++ headers uses a triple subdirectory. If
2930 // that path exists or we have neither a GCC nor target multiarch triple, use
2931 // this vanilla search path.
2932 if ((GCCMultiarchTriple.empty() && TargetMultiarchTriple.empty()) ||
2933 getVFS().exists(Base + Suffix + "/" + GCCTriple + IncludeSuffix)) {
2934 addSystemInclude(DriverArgs, CC1Args,
2935 Base + Suffix + "/" + GCCTriple + IncludeSuffix);
2937 // Otherwise try to use multiarch naming schemes which have normalized the
2938 // triples and put the triple before the suffix.
2940 // GCC surprisingly uses *both* the GCC triple with a multilib suffix and
2941 // the target triple, so we support that here.
2942 addSystemInclude(DriverArgs, CC1Args,
2943 Base + "/" + GCCMultiarchTriple + Suffix + IncludeSuffix);
2944 addSystemInclude(DriverArgs, CC1Args,
2945 Base + "/" + TargetMultiarchTriple + Suffix);
2948 addSystemInclude(DriverArgs, CC1Args, Base + Suffix + "/backward");
2953 Generic_GCC::addGCCLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
2954 llvm::opt::ArgStringList &CC1Args) const {
2955 // Use GCCInstallation to know where libstdc++ headers are installed.
2956 if (!GCCInstallation.isValid())
2959 // By default, look for the C++ headers in an include directory adjacent to
2960 // the lib directory of the GCC installation. Note that this is expect to be
2961 // equivalent to '/usr/include/c++/X.Y' in almost all cases.
2962 StringRef LibDir = GCCInstallation.getParentLibPath();
2963 StringRef InstallDir = GCCInstallation.getInstallPath();
2964 StringRef TripleStr = GCCInstallation.getTriple().str();
2965 const Multilib &Multilib = GCCInstallation.getMultilib();
2966 const std::string GCCMultiarchTriple = getMultiarchTriple(
2967 getDriver(), GCCInstallation.getTriple(), getDriver().SysRoot);
2968 const std::string TargetMultiarchTriple =
2969 getMultiarchTriple(getDriver(), getTriple(), getDriver().SysRoot);
2970 const GCCVersion &Version = GCCInstallation.getVersion();
2972 // The primary search for libstdc++ supports multiarch variants.
2973 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include",
2974 "/c++/" + Version.Text, TripleStr,
2975 GCCMultiarchTriple, TargetMultiarchTriple,
2976 Multilib.includeSuffix(), DriverArgs, CC1Args))
2979 // Otherwise, fall back on a bunch of options which don't use multiarch
2980 // layouts for simplicity.
2981 const std::string LibStdCXXIncludePathCandidates[] = {
2982 // Gentoo is weird and places its headers inside the GCC install,
2983 // so if the first attempt to find the headers fails, try these patterns.
2984 InstallDir.str() + "/include/g++-v" + Version.Text,
2985 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." +
2987 InstallDir.str() + "/include/g++-v" + Version.MajorStr,
2990 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) {
2991 if (addLibStdCXXIncludePaths(IncludePath, /*Suffix*/ "", TripleStr,
2992 /*GCCMultiarchTriple*/ "",
2993 /*TargetMultiarchTriple*/ "",
2994 Multilib.includeSuffix(), DriverArgs, CC1Args))
3001 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3002 llvm::opt::ArgStringList &CC1Args) const {
3003 addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args);
3006 llvm::opt::DerivedArgList *
3007 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef,
3008 Action::OffloadKind DeviceOffloadKind) const {
3010 // If this tool chain is used for an OpenMP offloading device we have to make
3011 // sure we always generate a shared library regardless of the commands the
3012 // user passed to the host. This is required because the runtime library
3013 // is required to load the device image dynamically at run time.
3014 if (DeviceOffloadKind == Action::OFK_OpenMP) {
3015 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
3016 const OptTable &Opts = getDriver().getOpts();
3018 // Request the shared library. Given that these options are decided
3019 // implicitly, they do not refer to any base argument.
3020 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared));
3021 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC));
3023 // Filter all the arguments we don't care passing to the offloading
3024 // toolchain as they can mess up with the creation of a shared library.
3025 for (auto *A : Args) {
3026 switch ((options::ID)A->getOption().getID()) {
3030 case options::OPT_shared:
3031 case options::OPT_dynamic:
3032 case options::OPT_static:
3033 case options::OPT_fPIC:
3034 case options::OPT_fno_PIC:
3035 case options::OPT_fpic:
3036 case options::OPT_fno_pic:
3037 case options::OPT_fPIE:
3038 case options::OPT_fno_PIE:
3039 case options::OPT_fpie:
3040 case options::OPT_fno_pie:
3049 void Generic_ELF::anchor() {}
3051 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
3052 ArgStringList &CC1Args,
3053 Action::OffloadKind) const {
3054 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
3055 options::OPT_fno_use_init_array, true))
3056 CC1Args.push_back("-fno-use-init-array");