1 //===--- Gnu.cpp - Gnu Tool and ToolChain Implementations -------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
13 #include "Arch/Mips.h"
15 #include "Arch/Sparc.h"
16 #include "Arch/SystemZ.h"
17 #include "CommonArgs.h"
18 #include "clang/Basic/VirtualFileSystem.h"
19 #include "clang/Config/config.h" // for GCC_INSTALL_PREFIX
20 #include "clang/Driver/Compilation.h"
21 #include "clang/Driver/Driver.h"
22 #include "clang/Driver/DriverDiagnostic.h"
23 #include "clang/Driver/Options.h"
24 #include "clang/Driver/Tool.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 <system_error>
31 using namespace clang::driver;
32 using namespace clang::driver::toolchains;
33 using namespace clang;
34 using namespace llvm::opt;
36 void tools::GnuTool::anchor() {}
38 static bool forwardToGCC(const Option &O) {
39 // Don't forward inputs from the original command line. They are added from
41 return O.getKind() != Option::InputClass &&
42 !O.hasFlag(options::DriverOption) && !O.hasFlag(options::LinkerInput);
45 // Switch CPU names not recognized by GNU assembler to a close CPU that it does
46 // recognize, instead of a lower march from being picked in the absence of a cpu
48 static void normalizeCPUNamesForAssembler(const ArgList &Args,
49 ArgStringList &CmdArgs) {
50 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
51 StringRef CPUArg(A->getValue());
52 if (CPUArg.equals_lower("krait"))
53 CmdArgs.push_back("-mcpu=cortex-a15");
54 else if(CPUArg.equals_lower("kryo"))
55 CmdArgs.push_back("-mcpu=cortex-a57");
57 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
61 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA,
62 const InputInfo &Output,
63 const InputInfoList &Inputs,
65 const char *LinkingOutput) const {
66 const Driver &D = getToolChain().getDriver();
67 ArgStringList CmdArgs;
69 for (const auto &A : Args) {
70 if (forwardToGCC(A->getOption())) {
71 // It is unfortunate that we have to claim here, as this means
72 // we will basically never report anything interesting for
73 // platforms using a generic gcc, even if we are just using gcc
74 // to get to the assembler.
77 // Don't forward any -g arguments to assembly steps.
78 if (isa<AssembleJobAction>(JA) &&
79 A->getOption().matches(options::OPT_g_Group))
82 // Don't forward any -W arguments to assembly and link steps.
83 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) &&
84 A->getOption().matches(options::OPT_W_Group))
87 A->render(Args, CmdArgs);
91 RenderExtraToolArgs(JA, CmdArgs);
93 // If using a driver driver, force the arch.
94 if (getToolChain().getTriple().isOSDarwin()) {
95 CmdArgs.push_back("-arch");
97 Args.MakeArgString(getToolChain().getDefaultUniversalArchName()));
100 // Try to force gcc to match the tool chain we want, if we recognize
103 // FIXME: The triple class should directly provide the information we want
105 switch (getToolChain().getArch()) {
108 case llvm::Triple::x86:
109 case llvm::Triple::ppc:
110 CmdArgs.push_back("-m32");
112 case llvm::Triple::x86_64:
113 case llvm::Triple::ppc64:
114 case llvm::Triple::ppc64le:
115 CmdArgs.push_back("-m64");
117 case llvm::Triple::sparcel:
118 CmdArgs.push_back("-EL");
122 if (Output.isFilename()) {
123 CmdArgs.push_back("-o");
124 CmdArgs.push_back(Output.getFilename());
126 assert(Output.isNothing() && "Unexpected output");
127 CmdArgs.push_back("-fsyntax-only");
130 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
132 // Only pass -x if gcc will understand it; otherwise hope gcc
133 // understands the suffix correctly. The main use case this would go
134 // wrong in is for linker inputs if they happened to have an odd
135 // suffix; really the only way to get this to happen is a command
136 // like '-x foobar a.c' which will treat a.c like a linker input.
138 // FIXME: For the linker case specifically, can we safely convert
139 // inputs into '-Wl,' options?
140 for (const auto &II : Inputs) {
141 // Don't try to pass LLVM or AST inputs to a generic gcc.
142 if (types::isLLVMIR(II.getType()))
143 D.Diag(clang::diag::err_drv_no_linker_llvm_support)
144 << getToolChain().getTripleString();
145 else if (II.getType() == types::TY_AST)
146 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString();
147 else if (II.getType() == types::TY_ModuleFile)
148 D.Diag(diag::err_drv_no_module_support)
149 << getToolChain().getTripleString();
151 if (types::canTypeBeUserSpecified(II.getType())) {
152 CmdArgs.push_back("-x");
153 CmdArgs.push_back(types::getTypeName(II.getType()));
157 CmdArgs.push_back(II.getFilename());
159 const Arg &A = II.getInputArg();
161 // Reverse translate some rewritten options.
162 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) {
163 CmdArgs.push_back("-lstdc++");
167 // Don't render as input, we need gcc to do the translations.
168 A.render(Args, CmdArgs);
172 const std::string &customGCCName = D.getCCCGenericGCCName();
174 if (!customGCCName.empty())
175 GCCName = customGCCName.c_str();
176 else if (D.CCCIsCXX()) {
181 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
182 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
185 void tools::gcc::Preprocessor::RenderExtraToolArgs(
186 const JobAction &JA, ArgStringList &CmdArgs) const {
187 CmdArgs.push_back("-E");
190 void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA,
191 ArgStringList &CmdArgs) const {
192 const Driver &D = getToolChain().getDriver();
194 switch (JA.getType()) {
195 // If -flto, etc. are present then make sure not to force assembly output.
196 case types::TY_LLVM_IR:
197 case types::TY_LTO_IR:
198 case types::TY_LLVM_BC:
199 case types::TY_LTO_BC:
200 CmdArgs.push_back("-c");
202 // We assume we've got an "integrated" assembler in that gcc will produce an
203 // object file itself.
204 case types::TY_Object:
205 CmdArgs.push_back("-c");
207 case types::TY_PP_Asm:
208 CmdArgs.push_back("-S");
210 case types::TY_Nothing:
211 CmdArgs.push_back("-fsyntax-only");
214 D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType());
218 void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA,
219 ArgStringList &CmdArgs) const {
220 // The types are (hopefully) good enough.
223 static bool addXRayRuntime(const ToolChain &TC, const ArgList &Args,
224 ArgStringList &CmdArgs) {
225 // Do not add the XRay runtime to shared libraries.
226 if (Args.hasArg(options::OPT_shared))
229 if (Args.hasFlag(options::OPT_fxray_instrument,
230 options::OPT_fnoxray_instrument, false)) {
231 CmdArgs.push_back("-whole-archive");
232 CmdArgs.push_back(TC.getCompilerRTArgString(Args, "xray", false));
233 CmdArgs.push_back("-no-whole-archive");
240 static void linkXRayRuntimeDeps(const ToolChain &TC, const ArgList &Args,
241 ArgStringList &CmdArgs) {
242 CmdArgs.push_back("--no-as-needed");
243 CmdArgs.push_back("-lpthread");
244 CmdArgs.push_back("-lrt");
245 CmdArgs.push_back("-lm");
247 if (TC.getTriple().getOS() != llvm::Triple::FreeBSD &&
248 TC.getTriple().getOS() != llvm::Triple::NetBSD)
249 CmdArgs.push_back("-ldl");
252 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) {
253 switch (T.getArch()) {
254 case llvm::Triple::x86:
258 case llvm::Triple::aarch64:
259 return "aarch64linux";
260 case llvm::Triple::aarch64_be:
261 return "aarch64_be_linux";
262 case llvm::Triple::arm:
263 case llvm::Triple::thumb:
264 return "armelf_linux_eabi";
265 case llvm::Triple::armeb:
266 case llvm::Triple::thumbeb:
267 return "armelfb_linux_eabi";
268 case llvm::Triple::ppc:
269 return "elf32ppclinux";
270 case llvm::Triple::ppc64:
272 case llvm::Triple::ppc64le:
274 case llvm::Triple::sparc:
275 case llvm::Triple::sparcel:
276 return "elf32_sparc";
277 case llvm::Triple::sparcv9:
278 return "elf64_sparc";
279 case llvm::Triple::mips:
280 return "elf32btsmip";
281 case llvm::Triple::mipsel:
282 return "elf32ltsmip";
283 case llvm::Triple::mips64:
284 if (tools::mips::hasMipsAbiArg(Args, "n32"))
285 return "elf32btsmipn32";
286 return "elf64btsmip";
287 case llvm::Triple::mips64el:
288 if (tools::mips::hasMipsAbiArg(Args, "n32"))
289 return "elf32ltsmipn32";
290 return "elf64ltsmip";
291 case llvm::Triple::systemz:
293 case llvm::Triple::x86_64:
294 if (T.getEnvironment() == llvm::Triple::GNUX32)
295 return "elf32_x86_64";
302 static bool getPIE(const ArgList &Args, const toolchains::Linux &ToolChain) {
303 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_static))
306 Arg *A = Args.getLastArg(options::OPT_pie, options::OPT_no_pie,
309 return ToolChain.isPIEDefault();
310 return A->getOption().matches(options::OPT_pie);
313 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
314 const InputInfo &Output,
315 const InputInfoList &Inputs,
317 const char *LinkingOutput) const {
318 const toolchains::Linux &ToolChain =
319 static_cast<const toolchains::Linux &>(getToolChain());
320 const Driver &D = ToolChain.getDriver();
322 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
324 const llvm::Triple::ArchType Arch = ToolChain.getArch();
325 const bool isAndroid = ToolChain.getTriple().isAndroid();
326 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
327 const bool IsPIE = getPIE(Args, ToolChain);
328 const bool HasCRTBeginEndFiles =
329 ToolChain.getTriple().hasEnvironment() ||
330 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
332 ArgStringList CmdArgs;
334 // Silence warning for "clang -g foo.o -o foo"
335 Args.ClaimAllArgs(options::OPT_g_Group);
336 // and "clang -emit-llvm foo.o -o foo"
337 Args.ClaimAllArgs(options::OPT_emit_llvm);
338 // and for "clang -w foo.o -o foo". Other warning options are already
339 // handled somewhere else.
340 Args.ClaimAllArgs(options::OPT_w);
342 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
343 if (llvm::sys::path::stem(Exec) == "lld") {
344 CmdArgs.push_back("-flavor");
345 CmdArgs.push_back("old-gnu");
346 CmdArgs.push_back("-target");
347 CmdArgs.push_back(Args.MakeArgString(getToolChain().getTripleString()));
350 if (!D.SysRoot.empty())
351 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
354 CmdArgs.push_back("-pie");
356 if (Args.hasArg(options::OPT_rdynamic))
357 CmdArgs.push_back("-export-dynamic");
359 if (Args.hasArg(options::OPT_s))
360 CmdArgs.push_back("-s");
362 if (Arch == llvm::Triple::armeb || Arch == llvm::Triple::thumbeb)
363 arm::appendEBLinkFlags(Args, CmdArgs, Triple);
365 // Most Android ARM64 targets should enable the linker fix for erratum
366 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
367 if (Arch == llvm::Triple::aarch64 && isAndroid) {
368 std::string CPU = getCPUName(Args, Triple);
369 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
370 CmdArgs.push_back("--fix-cortex-a53-843419");
373 for (const auto &Opt : ToolChain.ExtraOpts)
374 CmdArgs.push_back(Opt.c_str());
376 if (!Args.hasArg(options::OPT_static)) {
377 CmdArgs.push_back("--eh-frame-hdr");
380 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) {
381 CmdArgs.push_back("-m");
382 CmdArgs.push_back(LDMOption);
384 D.Diag(diag::err_target_unknown_triple) << Triple.str();
388 if (Args.hasArg(options::OPT_static)) {
389 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb ||
390 Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb)
391 CmdArgs.push_back("-Bstatic");
393 CmdArgs.push_back("-static");
394 } else if (Args.hasArg(options::OPT_shared)) {
395 CmdArgs.push_back("-shared");
398 if (!Args.hasArg(options::OPT_static)) {
399 if (Args.hasArg(options::OPT_rdynamic))
400 CmdArgs.push_back("-export-dynamic");
402 if (!Args.hasArg(options::OPT_shared)) {
403 const std::string Loader =
404 D.DyldPrefix + ToolChain.getDynamicLinker(Args);
405 CmdArgs.push_back("-dynamic-linker");
406 CmdArgs.push_back(Args.MakeArgString(Loader));
410 CmdArgs.push_back("-o");
411 CmdArgs.push_back(Output.getFilename());
413 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
414 if (!isAndroid && !IsIAMCU) {
415 const char *crt1 = nullptr;
416 if (!Args.hasArg(options::OPT_shared)) {
417 if (Args.hasArg(options::OPT_pg))
425 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
427 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
431 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
433 const char *crtbegin;
434 if (Args.hasArg(options::OPT_static))
435 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
436 else if (Args.hasArg(options::OPT_shared))
437 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
439 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
441 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
443 if (HasCRTBeginEndFiles)
444 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
447 // Add crtfastmath.o if available and fast math is enabled.
448 ToolChain.AddFastMathRuntimeIfAvailable(Args, CmdArgs);
451 Args.AddAllArgs(CmdArgs, options::OPT_L);
452 Args.AddAllArgs(CmdArgs, options::OPT_u);
454 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
457 AddGoldPlugin(ToolChain, Args, CmdArgs, D.getLTOMode() == LTOK_Thin, D);
459 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
460 CmdArgs.push_back("--no-demangle");
462 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
463 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
464 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
465 // The profile runtime also needs access to system libraries.
466 getToolChain().addProfileRTLibs(Args, CmdArgs);
469 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
470 if (ToolChain.ShouldLinkCXXStdlib(Args)) {
471 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
472 !Args.hasArg(options::OPT_static);
473 if (OnlyLibstdcxxStatic)
474 CmdArgs.push_back("-Bstatic");
475 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
476 if (OnlyLibstdcxxStatic)
477 CmdArgs.push_back("-Bdynamic");
479 CmdArgs.push_back("-lm");
481 // Silence warnings when linking C code with a C++ '-stdlib' argument.
482 Args.ClaimAllArgs(options::OPT_stdlib_EQ);
484 if (!Args.hasArg(options::OPT_nostdlib)) {
485 if (!Args.hasArg(options::OPT_nodefaultlibs)) {
486 if (Args.hasArg(options::OPT_static))
487 CmdArgs.push_back("--start-group");
489 if (NeedsSanitizerDeps)
490 linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
493 linkXRayRuntimeDeps(ToolChain, Args, CmdArgs);
495 bool WantPthread = Args.hasArg(options::OPT_pthread) ||
496 Args.hasArg(options::OPT_pthreads);
498 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
499 // require librt. Most modern Linux platforms do, but some may not.
500 if (addOpenMPRuntime(CmdArgs, ToolChain, Args,
501 JA.isHostOffloading(Action::OFK_OpenMP),
502 /* GompNeedsRT= */ true))
503 // OpenMP runtimes implies pthreads when using the GNU toolchain.
504 // FIXME: Does this really make sense for all GNU toolchains?
507 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
509 if (WantPthread && !isAndroid)
510 CmdArgs.push_back("-lpthread");
512 if (Args.hasArg(options::OPT_fsplit_stack))
513 CmdArgs.push_back("--wrap=pthread_create");
515 CmdArgs.push_back("-lc");
517 // Add IAMCU specific libs, if needed.
519 CmdArgs.push_back("-lgloss");
521 if (Args.hasArg(options::OPT_static))
522 CmdArgs.push_back("--end-group");
524 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
526 // Add IAMCU specific libs (outside the group), if needed.
528 CmdArgs.push_back("--as-needed");
529 CmdArgs.push_back("-lsoftfp");
530 CmdArgs.push_back("--no-as-needed");
534 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) {
536 if (Args.hasArg(options::OPT_shared))
537 crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
539 crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
541 crtend = isAndroid ? "crtend_android.o" : "crtend.o";
543 if (HasCRTBeginEndFiles)
544 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtend)));
546 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
550 // Add OpenMP offloading linker script args if required.
551 AddOpenMPLinkerScript(getToolChain(), C, Output, Inputs, Args, CmdArgs, JA);
553 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
556 void tools::gnutools::Assembler::ConstructJob(Compilation &C,
558 const InputInfo &Output,
559 const InputInfoList &Inputs,
561 const char *LinkingOutput) const {
562 const auto &D = getToolChain().getDriver();
564 claimNoWarnArgs(Args);
566 ArgStringList CmdArgs;
568 llvm::Reloc::Model RelocationModel;
571 std::tie(RelocationModel, PICLevel, IsPIE) =
572 ParsePICArgs(getToolChain(), Args);
574 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) {
575 if (A->getOption().getID() == options::OPT_gz) {
576 CmdArgs.push_back("-compress-debug-sections");
578 StringRef Value = A->getValue();
579 if (Value == "none") {
580 CmdArgs.push_back("-compress-debug-sections=none");
581 } else if (Value == "zlib" || Value == "zlib-gnu") {
583 Args.MakeArgString("-compress-debug-sections=" + Twine(Value)));
585 D.Diag(diag::err_drv_unsupported_option_argument)
586 << A->getOption().getName() << Value;
591 switch (getToolChain().getArch()) {
594 // Add --32/--64 to make sure we get the format we want.
595 // This is incomplete
596 case llvm::Triple::x86:
597 CmdArgs.push_back("--32");
599 case llvm::Triple::x86_64:
600 if (getToolChain().getTriple().getEnvironment() == llvm::Triple::GNUX32)
601 CmdArgs.push_back("--x32");
603 CmdArgs.push_back("--64");
605 case llvm::Triple::ppc: {
606 CmdArgs.push_back("-a32");
607 CmdArgs.push_back("-mppc");
609 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
612 case llvm::Triple::ppc64: {
613 CmdArgs.push_back("-a64");
614 CmdArgs.push_back("-mppc64");
616 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
619 case llvm::Triple::ppc64le: {
620 CmdArgs.push_back("-a64");
621 CmdArgs.push_back("-mppc64");
622 CmdArgs.push_back("-mlittle-endian");
624 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple())));
627 case llvm::Triple::sparc:
628 case llvm::Triple::sparcel: {
629 CmdArgs.push_back("-32");
630 std::string CPU = getCPUName(Args, getToolChain().getTriple());
631 CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
632 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
635 case llvm::Triple::sparcv9: {
636 CmdArgs.push_back("-64");
637 std::string CPU = getCPUName(Args, getToolChain().getTriple());
638 CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
639 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
642 case llvm::Triple::arm:
643 case llvm::Triple::armeb:
644 case llvm::Triple::thumb:
645 case llvm::Triple::thumbeb: {
646 const llvm::Triple &Triple2 = getToolChain().getTriple();
647 switch (Triple2.getSubArch()) {
648 case llvm::Triple::ARMSubArch_v7:
649 CmdArgs.push_back("-mfpu=neon");
651 case llvm::Triple::ARMSubArch_v8:
652 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8");
658 switch (arm::getARMFloatABI(getToolChain(), Args)) {
659 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
660 case arm::FloatABI::Soft:
661 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft"));
663 case arm::FloatABI::SoftFP:
664 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp"));
666 case arm::FloatABI::Hard:
667 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard"));
671 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
672 normalizeCPUNamesForAssembler(Args, CmdArgs);
674 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ);
677 case llvm::Triple::aarch64:
678 case llvm::Triple::aarch64_be: {
679 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
680 normalizeCPUNamesForAssembler(Args, CmdArgs);
684 case llvm::Triple::mips:
685 case llvm::Triple::mipsel:
686 case llvm::Triple::mips64:
687 case llvm::Triple::mips64el: {
690 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
691 ABIName = mips::getGnuCompatibleMipsABIName(ABIName);
693 CmdArgs.push_back("-march");
694 CmdArgs.push_back(CPUName.data());
696 CmdArgs.push_back("-mabi");
697 CmdArgs.push_back(ABIName.data());
699 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
700 // or -mshared (not implemented) is in effect.
701 if (RelocationModel == llvm::Reloc::Static)
702 CmdArgs.push_back("-mno-shared");
704 // LLVM doesn't support -mplt yet and acts as if it is always given.
705 // However, -mplt has no effect with the N64 ABI.
706 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls))
707 CmdArgs.push_back("-call_nonpic");
709 if (getToolChain().getArch() == llvm::Triple::mips ||
710 getToolChain().getArch() == llvm::Triple::mips64)
711 CmdArgs.push_back("-EB");
713 CmdArgs.push_back("-EL");
715 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) {
716 if (StringRef(A->getValue()) == "2008")
717 CmdArgs.push_back(Args.MakeArgString("-mnan=2008"));
720 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
721 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx,
722 options::OPT_mfp64)) {
724 A->render(Args, CmdArgs);
725 } else if (mips::shouldUseFPXX(
726 Args, getToolChain().getTriple(), CPUName, ABIName,
727 mips::getMipsFloatABI(getToolChain().getDriver(), Args)))
728 CmdArgs.push_back("-mfpxx");
730 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
731 // -mno-mips16 is actually -no-mips16.
733 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) {
734 if (A->getOption().matches(options::OPT_mips16)) {
736 A->render(Args, CmdArgs);
739 CmdArgs.push_back("-no-mips16");
743 Args.AddLastArg(CmdArgs, options::OPT_mmicromips,
744 options::OPT_mno_micromips);
745 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp);
746 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2);
748 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) {
749 // Do not use AddLastArg because not all versions of MIPS assembler
750 // support -mmsa / -mno-msa options.
751 if (A->getOption().matches(options::OPT_mmsa))
752 CmdArgs.push_back(Args.MakeArgString("-mmsa"));
755 Args.AddLastArg(CmdArgs, options::OPT_mhard_float,
756 options::OPT_msoft_float);
758 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float,
759 options::OPT_msingle_float);
761 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg,
762 options::OPT_mno_odd_spreg);
764 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
767 case llvm::Triple::systemz: {
768 // Always pass an -march option, since our default of z10 is later
769 // than the GNU assembler's default.
770 StringRef CPUName = systemz::getSystemZTargetCPU(Args);
771 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName));
776 Args.AddAllArgs(CmdArgs, options::OPT_I);
777 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
779 CmdArgs.push_back("-o");
780 CmdArgs.push_back(Output.getFilename());
782 for (const auto &II : Inputs)
783 CmdArgs.push_back(II.getFilename());
785 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
786 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
788 // Handle the debug info splitting at object creation time if we're
789 // creating an object.
790 // TODO: Currently only works on linux with newer objcopy.
791 if (Args.hasArg(options::OPT_gsplit_dwarf) &&
792 getToolChain().getTriple().isOSLinux())
793 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
794 SplitDebugName(Args, Inputs[0]));
798 // Filter to remove Multilibs that don't exist as a suffix to Path
799 class FilterNonExistent {
800 StringRef Base, File;
801 vfs::FileSystem &VFS;
804 FilterNonExistent(StringRef Base, StringRef File, vfs::FileSystem &VFS)
805 : Base(Base), File(File), VFS(VFS) {}
806 bool operator()(const Multilib &M) {
807 return !VFS.exists(Base + M.gccSuffix() + File);
810 } // end anonymous namespace
812 static bool isSoftFloatABI(const ArgList &Args) {
813 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
814 options::OPT_mfloat_abi_EQ);
818 return A->getOption().matches(options::OPT_msoft_float) ||
819 (A->getOption().matches(options::OPT_mfloat_abi_EQ) &&
820 A->getValue() == StringRef("soft"));
823 /// \p Flag must be a flag accepted by the driver with its leading '-' removed,
824 // otherwise '-print-multi-lib' will not emit them correctly.
825 static void addMultilibFlag(bool Enabled, const char *const Flag,
826 std::vector<std::string> &Flags) {
828 Flags.push_back(std::string("+") + Flag);
830 Flags.push_back(std::string("-") + Flag);
833 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
834 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
837 static bool isMips32(llvm::Triple::ArchType Arch) {
838 return Arch == llvm::Triple::mips || Arch == llvm::Triple::mipsel;
841 static bool isMips64(llvm::Triple::ArchType Arch) {
842 return Arch == llvm::Triple::mips64 || Arch == llvm::Triple::mips64el;
845 static bool isMipsEL(llvm::Triple::ArchType Arch) {
846 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
849 static bool isMips16(const ArgList &Args) {
850 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16);
851 return A && A->getOption().matches(options::OPT_mips16);
854 static bool isMicroMips(const ArgList &Args) {
855 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips);
856 return A && A->getOption().matches(options::OPT_mmicromips);
859 static Multilib makeMultilib(StringRef commonSuffix) {
860 return Multilib(commonSuffix, commonSuffix, commonSuffix);
863 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags,
864 FilterNonExistent &NonExistent,
865 DetectedMultilibs &Result) {
866 // Check for Code Sourcery toolchain multilibs
867 MultilibSet CSMipsMultilibs;
869 auto MArchMips16 = makeMultilib("/mips16").flag("+m32").flag("+mips16");
871 auto MArchMicroMips =
872 makeMultilib("/micromips").flag("+m32").flag("+mmicromips");
874 auto MArchDefault = makeMultilib("").flag("-mips16").flag("-mmicromips");
876 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
878 auto SoftFloat = makeMultilib("/soft-float").flag("+msoft-float");
880 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
883 makeMultilib("").flag("-msoft-float").flag("-mnan=2008");
885 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
887 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
889 // Note that this one's osSuffix is ""
890 auto MAbi64 = makeMultilib("")
892 .includeSuffix("/64")
899 .Either(MArchMips16, MArchMicroMips, MArchDefault)
901 .Either(SoftFloat, Nan2008, DefaultFloat)
902 .FilterOut("/micromips/nan2008")
903 .FilterOut("/mips16/nan2008")
904 .Either(BigEndian, LittleEndian)
906 .FilterOut("/mips16.*/64")
907 .FilterOut("/micromips.*/64")
908 .FilterOut(NonExistent)
909 .setIncludeDirsCallback([](const Multilib &M) {
910 std::vector<std::string> Dirs({"/include"});
911 if (StringRef(M.includeSuffix()).startswith("/uclibc"))
913 "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
915 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include");
920 MultilibSet DebianMipsMultilibs;
923 Multilib().gccSuffix("/n32").includeSuffix("/n32").flag("+mabi=n32");
925 Multilib M64 = Multilib()
927 .includeSuffix("/64")
932 Multilib M32 = Multilib().flag("-m64").flag("+m32").flag("-mabi=n32");
934 DebianMipsMultilibs =
935 MultilibSet().Either(M32, M64, MAbiN32).FilterOut(NonExistent);
938 // Sort candidates. Toolchain that best meets the directories tree goes first.
939 // Then select the first toolchains matches command line flags.
940 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
941 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
942 std::iter_swap(Candidates, Candidates + 1);
943 for (const MultilibSet *Candidate : Candidates) {
944 if (Candidate->select(Flags, Result.SelectedMultilib)) {
945 if (Candidate == &DebianMipsMultilibs)
946 Result.BiarchSibling = Multilib();
947 Result.Multilibs = *Candidate;
954 static bool findMipsAndroidMultilibs(vfs::FileSystem &VFS, StringRef Path,
955 const Multilib::flags_list &Flags,
956 FilterNonExistent &NonExistent,
957 DetectedMultilibs &Result) {
959 MultilibSet AndroidMipsMultilibs =
961 .Maybe(Multilib("/mips-r2").flag("+march=mips32r2"))
962 .Maybe(Multilib("/mips-r6").flag("+march=mips32r6"))
963 .FilterOut(NonExistent);
965 MultilibSet AndroidMipselMultilibs =
967 .Either(Multilib().flag("+march=mips32"),
968 Multilib("/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
969 Multilib("/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
970 .FilterOut(NonExistent);
972 MultilibSet AndroidMips64elMultilibs =
975 Multilib().flag("+march=mips64r6"),
976 Multilib("/32/mips-r1", "", "/mips-r1").flag("+march=mips32"),
977 Multilib("/32/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
978 Multilib("/32/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
979 .FilterOut(NonExistent);
981 MultilibSet *MS = &AndroidMipsMultilibs;
982 if (VFS.exists(Path + "/mips-r6"))
983 MS = &AndroidMipselMultilibs;
984 else if (VFS.exists(Path + "/32"))
985 MS = &AndroidMips64elMultilibs;
986 if (MS->select(Flags, Result.SelectedMultilib)) {
987 Result.Multilibs = *MS;
993 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags,
994 FilterNonExistent &NonExistent,
995 DetectedMultilibs &Result) {
996 // Musl toolchain multilibs
997 MultilibSet MuslMipsMultilibs;
999 auto MArchMipsR2 = makeMultilib("")
1000 .osSuffix("/mips-r2-hard-musl")
1003 .flag("+march=mips32r2");
1005 auto MArchMipselR2 = makeMultilib("/mipsel-r2-hard-musl")
1008 .flag("+march=mips32r2");
1010 MuslMipsMultilibs = MultilibSet().Either(MArchMipsR2, MArchMipselR2);
1012 // Specify the callback that computes the include directories.
1013 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1014 return std::vector<std::string>(
1015 {"/../sysroot" + M.osSuffix() + "/usr/include"});
1018 if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilib)) {
1019 Result.Multilibs = MuslMipsMultilibs;
1025 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags,
1026 FilterNonExistent &NonExistent,
1027 DetectedMultilibs &Result) {
1028 // CodeScape MTI toolchain v1.2 and early.
1029 MultilibSet MtiMipsMultilibsV1;
1031 auto MArchMips32 = makeMultilib("/mips32")
1034 .flag("-mmicromips")
1035 .flag("+march=mips32");
1037 auto MArchMicroMips = makeMultilib("/micromips")
1040 .flag("+mmicromips");
1042 auto MArchMips64r2 = makeMultilib("/mips64r2")
1045 .flag("+march=mips64r2");
1047 auto MArchMips64 = makeMultilib("/mips64").flag("-m32").flag("+m64").flag(
1050 auto MArchDefault = makeMultilib("")
1053 .flag("-mmicromips")
1054 .flag("+march=mips32r2");
1056 auto Mips16 = makeMultilib("/mips16").flag("+mips16");
1058 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
1061 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1063 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
1065 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1067 auto SoftFloat = makeMultilib("/sof").flag("+msoft-float");
1069 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
1071 MtiMipsMultilibsV1 =
1073 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64,
1077 .FilterOut("/mips64/mips16")
1078 .FilterOut("/mips64r2/mips16")
1079 .FilterOut("/micromips/mips16")
1081 .FilterOut("/micromips/64")
1082 .FilterOut("/mips32/64")
1084 .FilterOut("/mips16/64")
1085 .Either(BigEndian, LittleEndian)
1088 .FilterOut(".*sof/nan2008")
1089 .FilterOut(NonExistent)
1090 .setIncludeDirsCallback([](const Multilib &M) {
1091 std::vector<std::string> Dirs({"/include"});
1092 if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1093 Dirs.push_back("/../../../../sysroot/uclibc/usr/include");
1095 Dirs.push_back("/../../../../sysroot/usr/include");
1100 // CodeScape IMG toolchain starting from v1.3.
1101 MultilibSet MtiMipsMultilibsV2;
1103 auto BeHard = makeMultilib("/mips-r2-hard")
1105 .flag("-msoft-float")
1108 auto BeSoft = makeMultilib("/mips-r2-soft")
1110 .flag("+msoft-float")
1111 .flag("-mnan=2008");
1112 auto ElHard = makeMultilib("/mipsel-r2-hard")
1114 .flag("-msoft-float")
1117 auto ElSoft = makeMultilib("/mipsel-r2-soft")
1119 .flag("+msoft-float")
1121 .flag("-mmicromips");
1122 auto BeHardNan = makeMultilib("/mips-r2-hard-nan2008")
1124 .flag("-msoft-float")
1127 auto ElHardNan = makeMultilib("/mipsel-r2-hard-nan2008")
1129 .flag("-msoft-float")
1132 .flag("-mmicromips");
1133 auto BeHardNanUclibc = makeMultilib("/mips-r2-hard-nan2008-uclibc")
1135 .flag("-msoft-float")
1138 auto ElHardNanUclibc = makeMultilib("/mipsel-r2-hard-nan2008-uclibc")
1140 .flag("-msoft-float")
1143 auto BeHardUclibc = makeMultilib("/mips-r2-hard-uclibc")
1145 .flag("-msoft-float")
1148 auto ElHardUclibc = makeMultilib("/mipsel-r2-hard-uclibc")
1150 .flag("-msoft-float")
1153 auto ElMicroHardNan = makeMultilib("/micromipsel-r2-hard-nan2008")
1155 .flag("-msoft-float")
1157 .flag("+mmicromips");
1158 auto ElMicroSoft = makeMultilib("/micromipsel-r2-soft")
1160 .flag("+msoft-float")
1162 .flag("+mmicromips");
1165 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1167 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1169 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1171 MtiMipsMultilibsV2 =
1173 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1174 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1175 ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1176 .Either(O32, N32, N64)
1177 .FilterOut(NonExistent)
1178 .setIncludeDirsCallback([](const Multilib &M) {
1179 return std::vector<std::string>({"/../../../../sysroot" +
1181 "/../usr/include"});
1183 .setFilePathsCallback([](const Multilib &M) {
1184 return std::vector<std::string>(
1185 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1188 for (auto Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1189 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1190 Result.Multilibs = *Candidate;
1197 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags,
1198 FilterNonExistent &NonExistent,
1199 DetectedMultilibs &Result) {
1200 // CodeScape IMG toolchain v1.2 and early.
1201 MultilibSet ImgMultilibsV1;
1203 auto Mips64r6 = makeMultilib("/mips64r6").flag("+m64").flag("-m32");
1205 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1208 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1214 .Maybe(LittleEndian)
1215 .FilterOut(NonExistent)
1216 .setIncludeDirsCallback([](const Multilib &M) {
1217 return std::vector<std::string>(
1218 {"/include", "/../../../../sysroot/usr/include"});
1222 // CodeScape IMG toolchain starting from v1.3.
1223 MultilibSet ImgMultilibsV2;
1225 auto BeHard = makeMultilib("/mips-r6-hard")
1227 .flag("-msoft-float")
1228 .flag("-mmicromips");
1229 auto BeSoft = makeMultilib("/mips-r6-soft")
1231 .flag("+msoft-float")
1232 .flag("-mmicromips");
1233 auto ElHard = makeMultilib("/mipsel-r6-hard")
1235 .flag("-msoft-float")
1236 .flag("-mmicromips");
1237 auto ElSoft = makeMultilib("/mipsel-r6-soft")
1239 .flag("+msoft-float")
1240 .flag("-mmicromips");
1241 auto BeMicroHard = makeMultilib("/micromips-r6-hard")
1243 .flag("-msoft-float")
1244 .flag("+mmicromips");
1245 auto BeMicroSoft = makeMultilib("/micromips-r6-soft")
1247 .flag("+msoft-float")
1248 .flag("+mmicromips");
1249 auto ElMicroHard = makeMultilib("/micromipsel-r6-hard")
1251 .flag("-msoft-float")
1252 .flag("+mmicromips");
1253 auto ElMicroSoft = makeMultilib("/micromipsel-r6-soft")
1255 .flag("+msoft-float")
1256 .flag("+mmicromips");
1259 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1261 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1263 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1267 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1268 ElMicroHard, ElMicroSoft})
1269 .Either(O32, N32, N64)
1270 .FilterOut(NonExistent)
1271 .setIncludeDirsCallback([](const Multilib &M) {
1272 return std::vector<std::string>({"/../../../../sysroot" +
1274 "/../usr/include"});
1276 .setFilePathsCallback([](const Multilib &M) {
1277 return std::vector<std::string>(
1278 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1281 for (auto Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1282 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1283 Result.Multilibs = *Candidate;
1290 bool clang::driver::findMIPSMultilibs(const Driver &D,
1291 const llvm::Triple &TargetTriple,
1292 StringRef Path, const ArgList &Args,
1293 DetectedMultilibs &Result) {
1294 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1298 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName);
1300 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1302 Multilib::flags_list Flags;
1303 addMultilibFlag(isMips32(TargetArch), "m32", Flags);
1304 addMultilibFlag(isMips64(TargetArch), "m64", Flags);
1305 addMultilibFlag(isMips16(Args), "mips16", Flags);
1306 addMultilibFlag(CPUName == "mips32", "march=mips32", Flags);
1307 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" ||
1308 CPUName == "mips32r5" || CPUName == "p5600",
1309 "march=mips32r2", Flags);
1310 addMultilibFlag(CPUName == "mips32r6", "march=mips32r6", Flags);
1311 addMultilibFlag(CPUName == "mips64", "march=mips64", Flags);
1312 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" ||
1313 CPUName == "mips64r5" || CPUName == "octeon",
1314 "march=mips64r2", Flags);
1315 addMultilibFlag(CPUName == "mips64r6", "march=mips64r6", Flags);
1316 addMultilibFlag(isMicroMips(Args), "mmicromips", Flags);
1317 addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags);
1318 addMultilibFlag(tools::mips::isNaN2008(Args, TargetTriple), "mnan=2008",
1320 addMultilibFlag(ABIName == "n32", "mabi=n32", Flags);
1321 addMultilibFlag(ABIName == "n64", "mabi=n64", Flags);
1322 addMultilibFlag(isSoftFloatABI(Args), "msoft-float", Flags);
1323 addMultilibFlag(!isSoftFloatABI(Args), "mhard-float", Flags);
1324 addMultilibFlag(isMipsEL(TargetArch), "EL", Flags);
1325 addMultilibFlag(!isMipsEL(TargetArch), "EB", Flags);
1327 if (TargetTriple.isAndroid())
1328 return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent,
1331 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1332 TargetTriple.getOS() == llvm::Triple::Linux &&
1333 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1334 return findMipsMuslMultilibs(Flags, NonExistent, Result);
1336 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1337 TargetTriple.getOS() == llvm::Triple::Linux &&
1338 TargetTriple.isGNUEnvironment())
1339 return findMipsMtiMultilibs(Flags, NonExistent, Result);
1341 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1342 TargetTriple.getOS() == llvm::Triple::Linux &&
1343 TargetTriple.isGNUEnvironment())
1344 return findMipsImgMultilibs(Flags, NonExistent, Result);
1346 if (findMipsCsMultilibs(Flags, NonExistent, Result))
1349 // Fallback to the regular toolchain-tree structure.
1351 Result.Multilibs.push_back(Default);
1352 Result.Multilibs.FilterOut(NonExistent);
1354 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) {
1355 Result.BiarchSibling = Multilib();
1362 static void findAndroidArmMultilibs(const Driver &D,
1363 const llvm::Triple &TargetTriple,
1364 StringRef Path, const ArgList &Args,
1365 DetectedMultilibs &Result) {
1366 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1367 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1368 Multilib ArmV7Multilib = makeMultilib("/armv7-a")
1369 .flag("+march=armv7-a")
1371 Multilib ThumbMultilib = makeMultilib("/thumb")
1372 .flag("-march=armv7-a")
1374 Multilib ArmV7ThumbMultilib = makeMultilib("/armv7-a/thumb")
1375 .flag("+march=armv7-a")
1377 Multilib DefaultMultilib = makeMultilib("")
1378 .flag("-march=armv7-a")
1380 MultilibSet AndroidArmMultilibs =
1382 .Either(ThumbMultilib, ArmV7Multilib,
1383 ArmV7ThumbMultilib, DefaultMultilib)
1384 .FilterOut(NonExistent);
1386 Multilib::flags_list Flags;
1387 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ);
1388 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1389 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1390 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1391 bool IsThumbMode = IsThumbArch ||
1392 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) ||
1393 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB);
1394 bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1395 (llvm::ARM::parseArchVersion(Arch) == 7 ||
1396 (IsArmArch && Arch == "" && IsV7SubArch));
1397 addMultilibFlag(IsArmV7Mode, "march=armv7-a", Flags);
1398 addMultilibFlag(IsThumbMode, "mthumb", Flags);
1400 if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilib))
1401 Result.Multilibs = AndroidArmMultilibs;
1404 static bool findBiarchMultilibs(const Driver &D,
1405 const llvm::Triple &TargetTriple,
1406 StringRef Path, const ArgList &Args,
1407 bool NeedsBiarchSuffix,
1408 DetectedMultilibs &Result) {
1409 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1410 // in what would normally be GCCInstallPath and put the 64-bit
1411 // libs in a subdirectory named 64. The simple logic we follow is that
1412 // *if* there is a subdirectory of the right name with crtbegin.o in it,
1413 // we use that. If not, and if not a biarch triple alias, we look for
1414 // crtbegin.o without the subdirectory.
1417 Multilib Alt64 = Multilib()
1419 .includeSuffix("/64")
1423 Multilib Alt32 = Multilib()
1425 .includeSuffix("/32")
1429 Multilib Altx32 = Multilib()
1431 .includeSuffix("/x32")
1436 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
1437 FilterNonExistent NonExistent(
1438 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
1440 // Determine default multilib from: 32, 64, x32
1441 // Also handle cases such as 64 on 32, 32 on 64, etc.
1442 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
1443 const bool IsX32 = TargetTriple.getEnvironment() == llvm::Triple::GNUX32;
1444 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
1446 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
1448 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
1451 if (TargetTriple.isArch32Bit())
1452 Want = NeedsBiarchSuffix ? WANT64 : WANT32;
1454 Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
1456 Want = NeedsBiarchSuffix ? WANT32 : WANT64;
1460 Default.flag("+m32").flag("-m64").flag("-mx32");
1461 else if (Want == WANT64)
1462 Default.flag("-m32").flag("+m64").flag("-mx32");
1463 else if (Want == WANTX32)
1464 Default.flag("-m32").flag("-m64").flag("+mx32");
1468 Result.Multilibs.push_back(Default);
1469 Result.Multilibs.push_back(Alt64);
1470 Result.Multilibs.push_back(Alt32);
1471 Result.Multilibs.push_back(Altx32);
1473 Result.Multilibs.FilterOut(NonExistent);
1475 Multilib::flags_list Flags;
1476 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "m64", Flags);
1477 addMultilibFlag(TargetTriple.isArch32Bit(), "m32", Flags);
1478 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "mx32", Flags);
1480 if (!Result.Multilibs.select(Flags, Result.SelectedMultilib))
1483 if (Result.SelectedMultilib == Alt64 || Result.SelectedMultilib == Alt32 ||
1484 Result.SelectedMultilib == Altx32)
1485 Result.BiarchSibling = Default;
1490 /// Generic_GCC - A tool chain using the 'gcc' command to perform
1491 /// all subcommands; this relies on gcc translating the majority of
1492 /// command line options.
1494 /// \brief Less-than for GCCVersion, implementing a Strict Weak Ordering.
1495 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
1497 StringRef RHSPatchSuffix) const {
1498 if (Major != RHSMajor)
1499 return Major < RHSMajor;
1500 if (Minor != RHSMinor)
1501 return Minor < RHSMinor;
1502 if (Patch != RHSPatch) {
1503 // Note that versions without a specified patch sort higher than those with
1510 // Otherwise just sort on the patch itself.
1511 return Patch < RHSPatch;
1513 if (PatchSuffix != RHSPatchSuffix) {
1514 // Sort empty suffixes higher.
1515 if (RHSPatchSuffix.empty())
1517 if (PatchSuffix.empty())
1520 // Provide a lexicographic sort to make this a total ordering.
1521 return PatchSuffix < RHSPatchSuffix;
1524 // The versions are equal.
1528 /// \brief Parse a GCCVersion object out of a string of text.
1530 /// This is the primary means of forming GCCVersion objects.
1532 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) {
1533 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1534 std::pair<StringRef, StringRef> First = VersionText.split('.');
1535 std::pair<StringRef, StringRef> Second = First.second.split('.');
1537 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1538 if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0)
1540 GoodVersion.MajorStr = First.first.str();
1541 if (First.second.empty())
1543 if (Second.first.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0)
1545 GoodVersion.MinorStr = Second.first.str();
1547 // First look for a number prefix and parse that if present. Otherwise just
1548 // stash the entire patch string in the suffix, and leave the number
1549 // unspecified. This covers versions strings such as:
1550 // 5 (handled above)
1556 // And retains any patch number it finds.
1557 StringRef PatchText = GoodVersion.PatchSuffix = Second.second.str();
1558 if (!PatchText.empty()) {
1559 if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) {
1560 // Try to parse the number and any suffix.
1561 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) ||
1562 GoodVersion.Patch < 0)
1564 GoodVersion.PatchSuffix = PatchText.substr(EndNumber);
1571 static llvm::StringRef getGCCToolchainDir(const ArgList &Args) {
1572 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain);
1574 return A->getValue();
1575 return GCC_INSTALL_PREFIX;
1578 /// \brief Initialize a GCCInstallationDetector from the driver.
1580 /// This performs all of the autodetection and sets up the various paths.
1581 /// Once constructed, a GCCInstallationDetector is essentially immutable.
1583 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
1584 /// should instead pull the target out of the driver. This is currently
1585 /// necessary because the driver doesn't store the final version of the target
1587 void Generic_GCC::GCCInstallationDetector::init(
1588 const llvm::Triple &TargetTriple, const ArgList &Args,
1589 ArrayRef<std::string> ExtraTripleAliases) {
1590 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
1591 ? TargetTriple.get64BitArchVariant()
1592 : TargetTriple.get32BitArchVariant();
1593 // The library directories which may contain GCC installations.
1594 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
1595 // The compatible GCC triples for this particular architecture.
1596 SmallVector<StringRef, 16> CandidateTripleAliases;
1597 SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
1598 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs,
1599 CandidateTripleAliases, CandidateBiarchLibDirs,
1600 CandidateBiarchTripleAliases);
1602 // Compute the set of prefixes for our search.
1603 SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(),
1604 D.PrefixDirs.end());
1606 StringRef GCCToolchainDir = getGCCToolchainDir(Args);
1607 if (GCCToolchainDir != "") {
1608 if (GCCToolchainDir.back() == '/')
1609 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
1611 Prefixes.push_back(GCCToolchainDir);
1613 // If we have a SysRoot, try that first.
1614 if (!D.SysRoot.empty()) {
1615 Prefixes.push_back(D.SysRoot);
1616 Prefixes.push_back(D.SysRoot + "/usr");
1619 // Then look for gcc installed alongside clang.
1620 Prefixes.push_back(D.InstalledDir + "/..");
1622 // Then look for distribution supplied gcc installations.
1623 if (D.SysRoot.empty()) {
1624 // Look for RHEL devtoolsets.
1625 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr");
1626 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr");
1627 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr");
1628 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr");
1629 // And finally in /usr.
1630 Prefixes.push_back("/usr");
1634 // Try to respect gcc-config on Gentoo. However, do that only
1635 // if --gcc-toolchain is not provided or equal to the Gentoo install
1636 // in /usr. This avoids accidentally enforcing the system GCC version
1637 // when using a custom toolchain.
1638 if (GCCToolchainDir == "" || GCCToolchainDir == D.SysRoot + "/usr") {
1639 for (StringRef CandidateTriple : ExtraTripleAliases) {
1640 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
1643 for (StringRef CandidateTriple : CandidateTripleAliases) {
1644 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
1647 for (StringRef CandidateTriple : CandidateBiarchTripleAliases) {
1648 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true))
1653 // Loop over the various components which exist and select the best GCC
1654 // installation available. GCC installs are ranked by version number.
1655 Version = GCCVersion::Parse("0.0.0");
1656 for (const std::string &Prefix : Prefixes) {
1657 if (!D.getVFS().exists(Prefix))
1659 for (StringRef Suffix : CandidateLibDirs) {
1660 const std::string LibDir = Prefix + Suffix.str();
1661 if (!D.getVFS().exists(LibDir))
1663 for (StringRef Candidate : ExtraTripleAliases) // Try these first.
1664 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
1665 for (StringRef Candidate : CandidateTripleAliases)
1666 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
1668 for (StringRef Suffix : CandidateBiarchLibDirs) {
1669 const std::string LibDir = Prefix + Suffix.str();
1670 if (!D.getVFS().exists(LibDir))
1672 for (StringRef Candidate : CandidateBiarchTripleAliases)
1673 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate,
1674 /*NeedsBiarchSuffix=*/ true);
1679 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
1680 for (const auto &InstallPath : CandidateGCCInstallPaths)
1681 OS << "Found candidate GCC installation: " << InstallPath << "\n";
1683 if (!GCCInstallPath.empty())
1684 OS << "Selected GCC installation: " << GCCInstallPath << "\n";
1686 for (const auto &Multilib : Multilibs)
1687 OS << "Candidate multilib: " << Multilib << "\n";
1689 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault())
1690 OS << "Selected multilib: " << SelectedMultilib << "\n";
1693 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const {
1694 if (BiarchSibling.hasValue()) {
1695 M = BiarchSibling.getValue();
1701 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
1702 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
1703 SmallVectorImpl<StringRef> &LibDirs,
1704 SmallVectorImpl<StringRef> &TripleAliases,
1705 SmallVectorImpl<StringRef> &BiarchLibDirs,
1706 SmallVectorImpl<StringRef> &BiarchTripleAliases) {
1707 // Declare a bunch of static data sets that we'll select between below. These
1708 // are specifically designed to always refer to string literals to avoid any
1709 // lifetime or initialization issues.
1710 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
1711 static const char *const AArch64Triples[] = {
1712 "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-linux-android",
1713 "aarch64-redhat-linux", "aarch64-suse-linux"};
1714 static const char *const AArch64beLibDirs[] = {"/lib"};
1715 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu",
1716 "aarch64_be-linux-gnu"};
1718 static const char *const ARMLibDirs[] = {"/lib"};
1719 static const char *const ARMTriples[] = {"arm-linux-gnueabi",
1720 "arm-linux-androideabi"};
1721 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
1722 "armv7hl-redhat-linux-gnueabi",
1723 "armv6hl-suse-linux-gnueabi",
1724 "armv7hl-suse-linux-gnueabi"};
1725 static const char *const ARMebLibDirs[] = {"/lib"};
1726 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi",
1727 "armeb-linux-androideabi"};
1728 static const char *const ARMebHFTriples[] = {
1729 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
1731 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
1732 static const char *const X86_64Triples[] = {
1733 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
1734 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
1735 "x86_64-redhat-linux", "x86_64-suse-linux",
1736 "x86_64-manbo-linux-gnu", "x86_64-linux-gnu",
1737 "x86_64-slackware-linux", "x86_64-linux-android",
1738 "x86_64-unknown-linux"};
1739 static const char *const X32LibDirs[] = {"/libx32"};
1740 static const char *const X86LibDirs[] = {"/lib32", "/lib"};
1741 static const char *const X86Triples[] = {
1742 "i686-linux-gnu", "i686-pc-linux-gnu", "i486-linux-gnu",
1743 "i386-linux-gnu", "i386-redhat-linux6E", "i686-redhat-linux",
1744 "i586-redhat-linux", "i386-redhat-linux", "i586-suse-linux",
1745 "i486-slackware-linux", "i686-montavista-linux", "i686-linux-android",
1748 static const char *const MIPSLibDirs[] = {"/lib"};
1749 static const char *const MIPSTriples[] = {"mips-linux-gnu", "mips-mti-linux",
1750 "mips-mti-linux-gnu",
1751 "mips-img-linux-gnu"};
1752 static const char *const MIPSELLibDirs[] = {"/lib"};
1753 static const char *const MIPSELTriples[] = {"mipsel-linux-gnu",
1754 "mips-img-linux-gnu"};
1756 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
1757 static const char *const MIPS64Triples[] = {
1758 "mips64-linux-gnu", "mips-mti-linux-gnu", "mips-img-linux-gnu",
1759 "mips64-linux-gnuabi64"};
1760 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
1761 static const char *const MIPS64ELTriples[] = {
1762 "mips64el-linux-gnu", "mips-mti-linux-gnu", "mips-img-linux-gnu",
1763 "mips64el-linux-gnuabi64"};
1765 static const char *const MIPSELAndroidLibDirs[] = {"/lib", "/libr2",
1767 static const char *const MIPSELAndroidTriples[] = {"mipsel-linux-android"};
1768 static const char *const MIPS64ELAndroidLibDirs[] = {"/lib64", "/lib",
1769 "/libr2", "/libr6"};
1770 static const char *const MIPS64ELAndroidTriples[] = {
1771 "mips64el-linux-android"};
1773 static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
1774 static const char *const PPCTriples[] = {
1775 "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe",
1776 "powerpc-suse-linux", "powerpc-montavista-linuxspe"};
1777 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
1778 static const char *const PPC64Triples[] = {
1779 "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu",
1780 "powerpc64-suse-linux", "ppc64-redhat-linux"};
1781 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
1782 static const char *const PPC64LETriples[] = {
1783 "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu",
1784 "powerpc64le-suse-linux", "ppc64le-redhat-linux"};
1786 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
1787 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
1788 "sparcv8-linux-gnu"};
1789 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
1790 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
1791 "sparcv9-linux-gnu"};
1793 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
1794 static const char *const SystemZTriples[] = {
1795 "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu",
1796 "s390x-suse-linux", "s390x-redhat-linux"};
1799 static const char *const SolarisSPARCLibDirs[] = {"/gcc"};
1800 static const char *const SolarisSPARCTriples[] = {"sparc-sun-solaris2.11",
1801 "i386-pc-solaris2.11"};
1806 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
1807 LibDirs.append(begin(SolarisSPARCLibDirs), end(SolarisSPARCLibDirs));
1808 TripleAliases.append(begin(SolarisSPARCTriples), end(SolarisSPARCTriples));
1812 switch (TargetTriple.getArch()) {
1813 case llvm::Triple::aarch64:
1814 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
1815 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
1816 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
1817 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
1819 case llvm::Triple::aarch64_be:
1820 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
1821 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
1822 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
1823 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
1825 case llvm::Triple::arm:
1826 case llvm::Triple::thumb:
1827 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
1828 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
1829 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples));
1831 TripleAliases.append(begin(ARMTriples), end(ARMTriples));
1834 case llvm::Triple::armeb:
1835 case llvm::Triple::thumbeb:
1836 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs));
1837 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
1838 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples));
1840 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples));
1843 case llvm::Triple::x86_64:
1844 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
1845 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
1846 // x32 is always available when x86_64 is available, so adding it as
1847 // secondary arch with x86_64 triples
1848 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32) {
1849 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
1850 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
1852 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
1853 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples));
1856 case llvm::Triple::x86:
1857 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
1858 // MCU toolchain is 32 bit only and its triple alias is TargetTriple
1859 // itself, which will be appended below.
1860 if (!TargetTriple.isOSIAMCU()) {
1861 TripleAliases.append(begin(X86Triples), end(X86Triples));
1862 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
1863 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
1866 case llvm::Triple::mips:
1867 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
1868 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
1869 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
1870 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
1872 case llvm::Triple::mipsel:
1873 if (TargetTriple.isAndroid()) {
1874 LibDirs.append(begin(MIPSELAndroidLibDirs), end(MIPSELAndroidLibDirs));
1875 TripleAliases.append(begin(MIPSELAndroidTriples),
1876 end(MIPSELAndroidTriples));
1877 BiarchLibDirs.append(begin(MIPS64ELAndroidLibDirs),
1878 end(MIPS64ELAndroidLibDirs));
1879 BiarchTripleAliases.append(begin(MIPS64ELAndroidTriples),
1880 end(MIPS64ELAndroidTriples));
1883 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
1884 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
1885 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
1886 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
1887 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
1890 case llvm::Triple::mips64:
1891 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
1892 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
1893 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
1894 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
1896 case llvm::Triple::mips64el:
1897 if (TargetTriple.isAndroid()) {
1898 LibDirs.append(begin(MIPS64ELAndroidLibDirs),
1899 end(MIPS64ELAndroidLibDirs));
1900 TripleAliases.append(begin(MIPS64ELAndroidTriples),
1901 end(MIPS64ELAndroidTriples));
1902 BiarchLibDirs.append(begin(MIPSELAndroidLibDirs),
1903 end(MIPSELAndroidLibDirs));
1904 BiarchTripleAliases.append(begin(MIPSELAndroidTriples),
1905 end(MIPSELAndroidTriples));
1908 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
1909 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
1910 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
1911 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
1912 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
1915 case llvm::Triple::ppc:
1916 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
1917 TripleAliases.append(begin(PPCTriples), end(PPCTriples));
1918 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
1919 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
1921 case llvm::Triple::ppc64:
1922 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
1923 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
1924 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
1925 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples));
1927 case llvm::Triple::ppc64le:
1928 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
1929 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
1931 case llvm::Triple::sparc:
1932 case llvm::Triple::sparcel:
1933 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
1934 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
1935 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
1936 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
1938 case llvm::Triple::sparcv9:
1939 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
1940 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
1941 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
1942 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
1944 case llvm::Triple::systemz:
1945 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs));
1946 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples));
1949 // By default, just rely on the standard lib directories and the original
1954 // Always append the drivers target triple to the end, in case it doesn't
1955 // match any of our aliases.
1956 TripleAliases.push_back(TargetTriple.str());
1958 // Also include the multiarch variant if it's different.
1959 if (TargetTriple.str() != BiarchTriple.str())
1960 BiarchTripleAliases.push_back(BiarchTriple.str());
1963 void Generic_GCC::GCCInstallationDetector::scanLibDirForGCCTripleSolaris(
1964 const llvm::Triple &TargetArch, const llvm::opt::ArgList &Args,
1965 const std::string &LibDir, StringRef CandidateTriple,
1966 bool NeedsBiarchSuffix) {
1967 // Solaris is a special case. The GCC installation is under
1968 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/, so we
1969 // need to iterate twice.
1971 for (vfs::directory_iterator LI = D.getVFS().dir_begin(LibDir, EC), LE;
1972 !EC && LI != LE; LI = LI.increment(EC)) {
1973 StringRef VersionText = llvm::sys::path::filename(LI->getName());
1974 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
1976 if (CandidateVersion.Major != -1) // Filter obviously bad entries.
1977 if (!CandidateGCCInstallPaths.insert(LI->getName()).second)
1978 continue; // Saw this path before; no need to look at it again.
1979 if (CandidateVersion.isOlderThan(4, 1, 1))
1981 if (CandidateVersion <= Version)
1985 LibDir + "/" + VersionText.str() + "/lib/gcc/" + CandidateTriple.str();
1986 if (!D.getVFS().exists(GCCInstallPath))
1989 // If we make it here there has to be at least one GCC version, let's just
1990 // use the latest one.
1991 std::error_code EEC;
1992 for (vfs::directory_iterator
1993 LLI = D.getVFS().dir_begin(GCCInstallPath, EEC),
1995 !EEC && LLI != LLE; LLI = LLI.increment(EEC)) {
1997 StringRef SubVersionText = llvm::sys::path::filename(LLI->getName());
1998 GCCVersion CandidateSubVersion = GCCVersion::Parse(SubVersionText);
2000 if (CandidateSubVersion > Version)
2001 Version = CandidateSubVersion;
2004 GCCTriple.setTriple(CandidateTriple);
2006 GCCInstallPath += "/" + Version.Text;
2007 GCCParentLibPath = GCCInstallPath + "/../../../../";
2013 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2014 const llvm::Triple &TargetTriple, const ArgList &Args,
2015 StringRef Path, bool NeedsBiarchSuffix) {
2016 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2017 DetectedMultilibs Detected;
2019 // Android standalone toolchain could have multilibs for ARM and Thumb.
2020 // Debian mips multilibs behave more like the rest of the biarch ones,
2021 // so handle them there
2022 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) {
2023 // It should also work without multilibs in a simplified toolchain.
2024 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected);
2025 } else if (tools::isMipsArch(TargetArch)) {
2026 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected))
2028 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2029 NeedsBiarchSuffix, Detected)) {
2033 Multilibs = Detected.Multilibs;
2034 SelectedMultilib = Detected.SelectedMultilib;
2035 BiarchSibling = Detected.BiarchSibling;
2040 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2041 const llvm::Triple &TargetTriple, const ArgList &Args,
2042 const std::string &LibDir, StringRef CandidateTriple,
2043 bool NeedsBiarchSuffix) {
2044 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
2045 scanLibDirForGCCTripleSolaris(TargetTriple, Args, LibDir, CandidateTriple,
2050 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2051 // Locations relative to the system lib directory where GCC's triple-specific
2052 // directories might reside.
2053 struct GCCLibSuffix {
2054 // Path from system lib directory to GCC triple-specific directory.
2055 std::string LibSuffix;
2056 // Path from GCC triple-specific directory back to system lib directory.
2057 // This is one '..' component per component in LibSuffix.
2058 StringRef ReversePath;
2059 // Whether this library suffix is relevant for the triple.
2062 // This is the normal place.
2063 {"gcc/" + CandidateTriple.str(), "../..", true},
2065 // Debian puts cross-compilers in gcc-cross.
2066 {"gcc-cross/" + CandidateTriple.str(), "../..", true},
2068 // The Freescale PPC SDK has the gcc libraries in
2069 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2070 // this on Freescale triples, though, since some systems put a *lot* of
2071 // files in that location, not just GCC installation data.
2072 {CandidateTriple.str(), "..",
2073 TargetTriple.getVendor() == llvm::Triple::Freescale},
2075 // Natively multiarch systems sometimes put the GCC triple-specific
2076 // directory within their multiarch lib directory, resulting in the
2077 // triple appearing twice.
2078 {CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), "../../..", true},
2080 // Deal with cases (on Ubuntu) where the system architecture could be i386
2081 // but the GCC target architecture could be (say) i686.
2082 // FIXME: It may be worthwhile to generalize this and look for a second
2084 {"i386-linux-gnu/gcc/" + CandidateTriple.str(), "../../..",
2085 TargetArch == llvm::Triple::x86}
2088 for (auto &Suffix : Suffixes) {
2092 StringRef LibSuffix = Suffix.LibSuffix;
2094 for (vfs::directory_iterator
2095 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC),
2097 !EC && LI != LE; LI = LI.increment(EC)) {
2098 StringRef VersionText = llvm::sys::path::filename(LI->getName());
2099 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2100 if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2101 if (!CandidateGCCInstallPaths.insert(LI->getName()).second)
2102 continue; // Saw this path before; no need to look at it again.
2103 if (CandidateVersion.isOlderThan(4, 1, 1))
2105 if (CandidateVersion <= Version)
2108 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->getName(),
2112 Version = CandidateVersion;
2113 GCCTriple.setTriple(CandidateTriple);
2114 // FIXME: We hack together the directory name here instead of
2115 // using LI to ensure stable path separators across Windows and
2117 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2118 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str();
2124 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2125 const llvm::Triple &TargetTriple, const ArgList &Args,
2126 StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2127 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2128 D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/config-" +
2129 CandidateTriple.str());
2131 SmallVector<StringRef, 2> Lines;
2132 File.get()->getBuffer().split(Lines, "\n");
2133 for (StringRef Line : Lines) {
2135 // CURRENT=triple-version
2136 if (Line.consume_front("CURRENT=")) {
2137 const std::pair<StringRef, StringRef> ActiveVersion =
2139 // Note: Strictly speaking, we should be reading
2140 // /etc/env.d/gcc/${CURRENT} now. However, the file doesn't
2141 // contain anything new or especially useful to us.
2142 const std::string GentooPath = D.SysRoot + "/usr/lib/gcc/" +
2143 ActiveVersion.first.str() + "/" +
2144 ActiveVersion.second.str();
2145 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) {
2146 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath,
2150 Version = GCCVersion::Parse(ActiveVersion.second);
2151 GCCInstallPath = GentooPath;
2152 GCCParentLibPath = GentooPath + "/../../..";
2153 GCCTriple.setTriple(ActiveVersion.first);
2164 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
2165 const ArgList &Args)
2166 : ToolChain(D, Triple, Args), GCCInstallation(D),
2167 CudaInstallation(D, Triple, Args) {
2168 getProgramPaths().push_back(getDriver().getInstalledDir());
2169 if (getDriver().getInstalledDir() != getDriver().Dir)
2170 getProgramPaths().push_back(getDriver().Dir);
2173 Generic_GCC::~Generic_GCC() {}
2175 Tool *Generic_GCC::getTool(Action::ActionClass AC) const {
2177 case Action::PreprocessJobClass:
2179 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this));
2180 return Preprocess.get();
2181 case Action::CompileJobClass:
2183 Compile.reset(new tools::gcc::Compiler(*this));
2184 return Compile.get();
2186 return ToolChain::getTool(AC);
2190 Tool *Generic_GCC::buildAssembler() const {
2191 return new tools::gnutools::Assembler(*this);
2194 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
2196 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
2197 // Print the information about how we detected the GCC installation.
2198 GCCInstallation.print(OS);
2199 CudaInstallation.print(OS);
2202 bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const {
2203 return getArch() == llvm::Triple::x86_64;
2206 bool Generic_GCC::isPICDefault() const {
2207 switch (getArch()) {
2208 case llvm::Triple::x86_64:
2209 return getTriple().isOSWindows();
2210 case llvm::Triple::ppc64:
2211 case llvm::Triple::ppc64le:
2212 return !getTriple().isOSBinFormatMachO() && !getTriple().isMacOSX();
2213 case llvm::Triple::mips64:
2214 case llvm::Triple::mips64el:
2221 bool Generic_GCC::isPIEDefault() const { return false; }
2223 bool Generic_GCC::isPICDefaultForced() const {
2224 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
2227 bool Generic_GCC::IsIntegratedAssemblerDefault() const {
2228 switch (getTriple().getArch()) {
2229 case llvm::Triple::x86:
2230 case llvm::Triple::x86_64:
2231 case llvm::Triple::aarch64:
2232 case llvm::Triple::aarch64_be:
2233 case llvm::Triple::arm:
2234 case llvm::Triple::armeb:
2235 case llvm::Triple::avr:
2236 case llvm::Triple::bpfel:
2237 case llvm::Triple::bpfeb:
2238 case llvm::Triple::thumb:
2239 case llvm::Triple::thumbeb:
2240 case llvm::Triple::ppc:
2241 case llvm::Triple::ppc64:
2242 case llvm::Triple::ppc64le:
2243 case llvm::Triple::systemz:
2244 case llvm::Triple::mips:
2245 case llvm::Triple::mipsel:
2247 case llvm::Triple::mips64:
2248 case llvm::Triple::mips64el:
2249 // Enabled for Debian and Android mips64/mipsel, as they can precisely
2250 // identify the ABI in use (Debian) or only use N64 for MIPS64 (Android).
2251 // Other targets are unable to distinguish N32 from N64.
2252 if (getTriple().getEnvironment() == llvm::Triple::GNUABI64 ||
2253 getTriple().isAndroid())
2261 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
2262 ArgStringList &CC1Args) const {
2263 if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
2264 DriverArgs.hasArg(options::OPT_nostdincxx))
2267 switch (GetCXXStdlibType(DriverArgs)) {
2268 case ToolChain::CST_Libcxx: {
2269 std::string Path = findLibCxxIncludePath();
2271 addSystemInclude(DriverArgs, CC1Args, Path);
2275 case ToolChain::CST_Libstdcxx:
2276 addLibStdCxxIncludePaths(DriverArgs, CC1Args);
2281 std::string Generic_GCC::findLibCxxIncludePath() const {
2282 // FIXME: The Linux behavior would probaby be a better approach here.
2283 return getDriver().SysRoot + "/usr/include/c++/v1";
2287 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
2288 llvm::opt::ArgStringList &CC1Args) const {
2289 // By default, we don't assume we know where libstdc++ might be installed.
2290 // FIXME: If we have a valid GCCInstallation, use it.
2293 /// \brief Helper to add the variant paths of a libstdc++ installation.
2294 bool Generic_GCC::addLibStdCXXIncludePaths(
2295 Twine Base, Twine Suffix, StringRef GCCTriple, StringRef GCCMultiarchTriple,
2296 StringRef TargetMultiarchTriple, Twine IncludeSuffix,
2297 const ArgList &DriverArgs, ArgStringList &CC1Args) const {
2298 if (!getVFS().exists(Base + Suffix))
2301 addSystemInclude(DriverArgs, CC1Args, Base + Suffix);
2303 // The vanilla GCC layout of libstdc++ headers uses a triple subdirectory. If
2304 // that path exists or we have neither a GCC nor target multiarch triple, use
2305 // this vanilla search path.
2306 if ((GCCMultiarchTriple.empty() && TargetMultiarchTriple.empty()) ||
2307 getVFS().exists(Base + Suffix + "/" + GCCTriple + IncludeSuffix)) {
2308 addSystemInclude(DriverArgs, CC1Args,
2309 Base + Suffix + "/" + GCCTriple + IncludeSuffix);
2311 // Otherwise try to use multiarch naming schemes which have normalized the
2312 // triples and put the triple before the suffix.
2314 // GCC surprisingly uses *both* the GCC triple with a multilib suffix and
2315 // the target triple, so we support that here.
2316 addSystemInclude(DriverArgs, CC1Args,
2317 Base + "/" + GCCMultiarchTriple + Suffix + IncludeSuffix);
2318 addSystemInclude(DriverArgs, CC1Args,
2319 Base + "/" + TargetMultiarchTriple + Suffix);
2322 addSystemInclude(DriverArgs, CC1Args, Base + Suffix + "/backward");
2326 llvm::opt::DerivedArgList *
2327 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef,
2328 Action::OffloadKind DeviceOffloadKind) const {
2330 // If this tool chain is used for an OpenMP offloading device we have to make
2331 // sure we always generate a shared library regardless of the commands the
2332 // user passed to the host. This is required because the runtime library
2333 // is required to load the device image dynamically at run time.
2334 if (DeviceOffloadKind == Action::OFK_OpenMP) {
2335 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
2336 const OptTable &Opts = getDriver().getOpts();
2338 // Request the shared library. Given that these options are decided
2339 // implicitly, they do not refer to any base argument.
2340 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared));
2341 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC));
2343 // Filter all the arguments we don't care passing to the offloading
2344 // toolchain as they can mess up with the creation of a shared library.
2345 for (auto *A : Args) {
2346 switch ((options::ID)A->getOption().getID()) {
2350 case options::OPT_shared:
2351 case options::OPT_dynamic:
2352 case options::OPT_static:
2353 case options::OPT_fPIC:
2354 case options::OPT_fno_PIC:
2355 case options::OPT_fpic:
2356 case options::OPT_fno_pic:
2357 case options::OPT_fPIE:
2358 case options::OPT_fno_PIE:
2359 case options::OPT_fpie:
2360 case options::OPT_fno_pie:
2369 void Generic_ELF::anchor() {}
2371 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
2372 ArgStringList &CC1Args,
2373 Action::OffloadKind) const {
2374 const Generic_GCC::GCCVersion &V = GCCInstallation.getVersion();
2375 bool UseInitArrayDefault =
2376 getTriple().getArch() == llvm::Triple::aarch64 ||
2377 getTriple().getArch() == llvm::Triple::aarch64_be ||
2378 (getTriple().getOS() == llvm::Triple::Linux &&
2379 ((!GCCInstallation.isValid() || !V.isOlderThan(4, 7, 0)) ||
2380 getTriple().isAndroid())) ||
2381 getTriple().getOS() == llvm::Triple::NaCl ||
2382 (getTriple().getVendor() == llvm::Triple::MipsTechnologies &&
2383 !getTriple().hasEnvironment()) ||
2384 getTriple().getOS() == llvm::Triple::Solaris;
2386 if (DriverArgs.hasFlag(options::OPT_fuse_init_array,
2387 options::OPT_fno_use_init_array, UseInitArrayDefault))
2388 CC1Args.push_back("-fuse-init-array");