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"
14 #include "Arch/Sparc.h"
15 #include "Arch/SystemZ.h"
16 #include "CommonArgs.h"
17 #include "clang/Basic/VirtualFileSystem.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 "llvm/Option/ArgList.h"
25 #include "llvm/Support/CodeGen.h"
26 #include "llvm/Support/Path.h"
27 #include "llvm/Support/TargetParser.h"
28 #include <system_error>
30 using namespace clang::driver;
31 using namespace clang::driver::toolchains;
32 using namespace clang;
33 using namespace llvm::opt;
35 void tools::GnuTool::anchor() {}
37 static bool forwardToGCC(const Option &O) {
38 // Don't forward inputs from the original command line. They are added from
40 return O.getKind() != Option::InputClass &&
41 !O.hasFlag(options::DriverOption) && !O.hasFlag(options::LinkerInput);
44 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA,
45 const InputInfo &Output,
46 const InputInfoList &Inputs,
48 const char *LinkingOutput) const {
49 const Driver &D = getToolChain().getDriver();
50 ArgStringList CmdArgs;
52 for (const auto &A : Args) {
53 if (forwardToGCC(A->getOption())) {
54 // It is unfortunate that we have to claim here, as this means
55 // we will basically never report anything interesting for
56 // platforms using a generic gcc, even if we are just using gcc
57 // to get to the assembler.
60 // Don't forward any -g arguments to assembly steps.
61 if (isa<AssembleJobAction>(JA) &&
62 A->getOption().matches(options::OPT_g_Group))
65 // Don't forward any -W arguments to assembly and link steps.
66 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) &&
67 A->getOption().matches(options::OPT_W_Group))
70 A->render(Args, CmdArgs);
74 RenderExtraToolArgs(JA, CmdArgs);
76 // If using a driver driver, force the arch.
77 if (getToolChain().getTriple().isOSDarwin()) {
78 CmdArgs.push_back("-arch");
80 Args.MakeArgString(getToolChain().getDefaultUniversalArchName()));
83 // Try to force gcc to match the tool chain we want, if we recognize
86 // FIXME: The triple class should directly provide the information we want
88 switch (getToolChain().getArch()) {
91 case llvm::Triple::x86:
92 case llvm::Triple::ppc:
93 CmdArgs.push_back("-m32");
95 case llvm::Triple::x86_64:
96 case llvm::Triple::ppc64:
97 case llvm::Triple::ppc64le:
98 CmdArgs.push_back("-m64");
100 case llvm::Triple::sparcel:
101 CmdArgs.push_back("-EL");
105 if (Output.isFilename()) {
106 CmdArgs.push_back("-o");
107 CmdArgs.push_back(Output.getFilename());
109 assert(Output.isNothing() && "Unexpected output");
110 CmdArgs.push_back("-fsyntax-only");
113 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
115 // Only pass -x if gcc will understand it; otherwise hope gcc
116 // understands the suffix correctly. The main use case this would go
117 // wrong in is for linker inputs if they happened to have an odd
118 // suffix; really the only way to get this to happen is a command
119 // like '-x foobar a.c' which will treat a.c like a linker input.
121 // FIXME: For the linker case specifically, can we safely convert
122 // inputs into '-Wl,' options?
123 for (const auto &II : Inputs) {
124 // Don't try to pass LLVM or AST inputs to a generic gcc.
125 if (types::isLLVMIR(II.getType()))
126 D.Diag(clang::diag::err_drv_no_linker_llvm_support)
127 << getToolChain().getTripleString();
128 else if (II.getType() == types::TY_AST)
129 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString();
130 else if (II.getType() == types::TY_ModuleFile)
131 D.Diag(diag::err_drv_no_module_support)
132 << getToolChain().getTripleString();
134 if (types::canTypeBeUserSpecified(II.getType())) {
135 CmdArgs.push_back("-x");
136 CmdArgs.push_back(types::getTypeName(II.getType()));
140 CmdArgs.push_back(II.getFilename());
142 const Arg &A = II.getInputArg();
144 // Reverse translate some rewritten options.
145 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) {
146 CmdArgs.push_back("-lstdc++");
150 // Don't render as input, we need gcc to do the translations.
151 A.render(Args, CmdArgs);
155 const std::string &customGCCName = D.getCCCGenericGCCName();
157 if (!customGCCName.empty())
158 GCCName = customGCCName.c_str();
159 else if (D.CCCIsCXX()) {
164 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
165 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
168 void tools::gcc::Preprocessor::RenderExtraToolArgs(
169 const JobAction &JA, ArgStringList &CmdArgs) const {
170 CmdArgs.push_back("-E");
173 void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA,
174 ArgStringList &CmdArgs) const {
175 const Driver &D = getToolChain().getDriver();
177 switch (JA.getType()) {
178 // If -flto, etc. are present then make sure not to force assembly output.
179 case types::TY_LLVM_IR:
180 case types::TY_LTO_IR:
181 case types::TY_LLVM_BC:
182 case types::TY_LTO_BC:
183 CmdArgs.push_back("-c");
185 // We assume we've got an "integrated" assembler in that gcc will produce an
186 // object file itself.
187 case types::TY_Object:
188 CmdArgs.push_back("-c");
190 case types::TY_PP_Asm:
191 CmdArgs.push_back("-S");
193 case types::TY_Nothing:
194 CmdArgs.push_back("-fsyntax-only");
197 D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType());
201 void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA,
202 ArgStringList &CmdArgs) const {
203 // The types are (hopefully) good enough.
206 /// Add OpenMP linker script arguments at the end of the argument list so that
207 /// the fat binary is built by embedding each of the device images into the
208 /// host. The linker script also defines a few symbols required by the code
209 /// generation so that the images can be easily retrieved at runtime by the
210 /// offloading library. This should be used only in tool chains that support
212 static void AddOpenMPLinkerScript(const ToolChain &TC, Compilation &C,
213 const InputInfo &Output,
214 const InputInfoList &Inputs,
215 const ArgList &Args, ArgStringList &CmdArgs,
216 const JobAction &JA) {
218 // If this is not an OpenMP host toolchain, we don't need to do anything.
219 if (!JA.isHostOffloading(Action::OFK_OpenMP))
222 // Create temporary linker script. Keep it if save-temps is enabled.
224 SmallString<256> Name = llvm::sys::path::filename(Output.getFilename());
225 if (C.getDriver().isSaveTempsEnabled()) {
226 llvm::sys::path::replace_extension(Name, "lk");
227 LKS = C.getArgs().MakeArgString(Name.c_str());
229 llvm::sys::path::replace_extension(Name, "");
230 Name = C.getDriver().GetTemporaryPath(Name, "lk");
231 LKS = C.addTempFile(C.getArgs().MakeArgString(Name.c_str()));
234 // Add linker script option to the command.
235 CmdArgs.push_back("-T");
236 CmdArgs.push_back(LKS);
238 // Create a buffer to write the contents of the linker script.
239 std::string LksBuffer;
240 llvm::raw_string_ostream LksStream(LksBuffer);
242 // Get the OpenMP offload tool chains so that we can extract the triple
243 // associated with each device input.
244 auto OpenMPToolChains = C.getOffloadToolChains<Action::OFK_OpenMP>();
245 assert(OpenMPToolChains.first != OpenMPToolChains.second &&
246 "No OpenMP toolchains??");
248 // Track the input file name and device triple in order to build the script,
249 // inserting binaries in the designated sections.
250 SmallVector<std::pair<std::string, const char *>, 8> InputBinaryInfo;
252 // Add commands to embed target binaries. We ensure that each section and
253 // image is 16-byte aligned. This is not mandatory, but increases the
254 // likelihood of data to be aligned with a cache block in several main host
257 LksStream << " OpenMP Offload Linker Script\n";
258 LksStream << " *** Automatically generated by Clang ***\n";
260 LksStream << "TARGET(binary)\n";
261 auto DTC = OpenMPToolChains.first;
262 for (auto &II : Inputs) {
263 const Action *A = II.getAction();
264 // Is this a device linking action?
265 if (A && isa<LinkJobAction>(A) &&
266 A->isDeviceOffloading(Action::OFK_OpenMP)) {
267 assert(DTC != OpenMPToolChains.second &&
268 "More device inputs than device toolchains??");
269 InputBinaryInfo.push_back(std::make_pair(
270 DTC->second->getTriple().normalize(), II.getFilename()));
272 LksStream << "INPUT(" << II.getFilename() << ")\n";
276 assert(DTC == OpenMPToolChains.second &&
277 "Less device inputs than device toolchains??");
279 LksStream << "SECTIONS\n";
281 LksStream << " .omp_offloading :\n";
282 LksStream << " ALIGN(0x10)\n";
285 for (auto &BI : InputBinaryInfo) {
286 LksStream << " . = ALIGN(0x10);\n";
287 LksStream << " PROVIDE_HIDDEN(.omp_offloading.img_start." << BI.first
289 LksStream << " " << BI.second << "\n";
290 LksStream << " PROVIDE_HIDDEN(.omp_offloading.img_end." << BI.first
295 // Add commands to define host entries begin and end. We use 1-byte subalign
296 // so that the linker does not add any padding and the elements in this
297 // section form an array.
298 LksStream << " .omp_offloading.entries :\n";
299 LksStream << " ALIGN(0x10)\n";
300 LksStream << " SUBALIGN(0x01)\n";
302 LksStream << " PROVIDE_HIDDEN(.omp_offloading.entries_begin = .);\n";
303 LksStream << " *(.omp_offloading.entries)\n";
304 LksStream << " PROVIDE_HIDDEN(.omp_offloading.entries_end = .);\n";
307 LksStream << "INSERT BEFORE .data\n";
310 // Dump the contents of the linker script if the user requested that. We
311 // support this option to enable testing of behavior with -###.
312 if (C.getArgs().hasArg(options::OPT_fopenmp_dump_offload_linker_script))
313 llvm::errs() << LksBuffer;
315 // If this is a dry run, do not create the linker script file.
316 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH))
319 // Open script file and write the contents.
321 llvm::raw_fd_ostream Lksf(LKS, EC, llvm::sys::fs::F_None);
324 C.getDriver().Diag(clang::diag::err_unable_to_make_temp) << EC.message();
331 static bool addXRayRuntime(const ToolChain &TC, const ArgList &Args,
332 ArgStringList &CmdArgs) {
333 if (Args.hasFlag(options::OPT_fxray_instrument,
334 options::OPT_fnoxray_instrument, false)) {
335 CmdArgs.push_back("-whole-archive");
336 CmdArgs.push_back(TC.getCompilerRTArgString(Args, "xray", false));
337 CmdArgs.push_back("-no-whole-archive");
343 static void linkXRayRuntimeDeps(const ToolChain &TC, const ArgList &Args,
344 ArgStringList &CmdArgs) {
345 CmdArgs.push_back("--no-as-needed");
346 CmdArgs.push_back("-lpthread");
347 CmdArgs.push_back("-lrt");
348 CmdArgs.push_back("-lm");
350 if (TC.getTriple().getOS() != llvm::Triple::FreeBSD)
351 CmdArgs.push_back("-ldl");
354 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) {
355 switch (T.getArch()) {
356 case llvm::Triple::x86:
360 case llvm::Triple::aarch64:
361 return "aarch64linux";
362 case llvm::Triple::aarch64_be:
363 return "aarch64_be_linux";
364 case llvm::Triple::arm:
365 case llvm::Triple::thumb:
366 return "armelf_linux_eabi";
367 case llvm::Triple::armeb:
368 case llvm::Triple::thumbeb:
369 return "armelfb_linux_eabi";
370 case llvm::Triple::ppc:
371 return "elf32ppclinux";
372 case llvm::Triple::ppc64:
374 case llvm::Triple::ppc64le:
376 case llvm::Triple::sparc:
377 case llvm::Triple::sparcel:
378 return "elf32_sparc";
379 case llvm::Triple::sparcv9:
380 return "elf64_sparc";
381 case llvm::Triple::mips:
382 return "elf32btsmip";
383 case llvm::Triple::mipsel:
384 return "elf32ltsmip";
385 case llvm::Triple::mips64:
386 if (tools::mips::hasMipsAbiArg(Args, "n32"))
387 return "elf32btsmipn32";
388 return "elf64btsmip";
389 case llvm::Triple::mips64el:
390 if (tools::mips::hasMipsAbiArg(Args, "n32"))
391 return "elf32ltsmipn32";
392 return "elf64ltsmip";
393 case llvm::Triple::systemz:
395 case llvm::Triple::x86_64:
396 if (T.getEnvironment() == llvm::Triple::GNUX32)
397 return "elf32_x86_64";
404 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
405 const InputInfo &Output,
406 const InputInfoList &Inputs,
408 const char *LinkingOutput) const {
409 const toolchains::Linux &ToolChain =
410 static_cast<const toolchains::Linux &>(getToolChain());
411 const Driver &D = ToolChain.getDriver();
413 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
415 const llvm::Triple::ArchType Arch = ToolChain.getArch();
416 const bool isAndroid = ToolChain.getTriple().isAndroid();
417 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
419 !Args.hasArg(options::OPT_shared) && !Args.hasArg(options::OPT_static) &&
420 (Args.hasArg(options::OPT_pie) || ToolChain.isPIEDefault());
421 const bool HasCRTBeginEndFiles =
422 ToolChain.getTriple().hasEnvironment() ||
423 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
425 ArgStringList CmdArgs;
427 // Silence warning for "clang -g foo.o -o foo"
428 Args.ClaimAllArgs(options::OPT_g_Group);
429 // and "clang -emit-llvm foo.o -o foo"
430 Args.ClaimAllArgs(options::OPT_emit_llvm);
431 // and for "clang -w foo.o -o foo". Other warning options are already
432 // handled somewhere else.
433 Args.ClaimAllArgs(options::OPT_w);
435 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
436 if (llvm::sys::path::stem(Exec) == "lld") {
437 CmdArgs.push_back("-flavor");
438 CmdArgs.push_back("old-gnu");
439 CmdArgs.push_back("-target");
440 CmdArgs.push_back(Args.MakeArgString(getToolChain().getTripleString()));
443 if (!D.SysRoot.empty())
444 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
447 CmdArgs.push_back("-pie");
449 if (Args.hasArg(options::OPT_rdynamic))
450 CmdArgs.push_back("-export-dynamic");
452 if (Args.hasArg(options::OPT_s))
453 CmdArgs.push_back("-s");
455 if (Arch == llvm::Triple::armeb || Arch == llvm::Triple::thumbeb)
456 arm::appendEBLinkFlags(Args, CmdArgs, Triple);
458 // Most Android ARM64 targets should enable the linker fix for erratum
459 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
460 if (Arch == llvm::Triple::aarch64 && isAndroid) {
461 std::string CPU = getCPUName(Args, Triple);
462 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
463 CmdArgs.push_back("--fix-cortex-a53-843419");
466 for (const auto &Opt : ToolChain.ExtraOpts)
467 CmdArgs.push_back(Opt.c_str());
469 if (!Args.hasArg(options::OPT_static)) {
470 CmdArgs.push_back("--eh-frame-hdr");
473 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) {
474 CmdArgs.push_back("-m");
475 CmdArgs.push_back(LDMOption);
477 D.Diag(diag::err_target_unknown_triple) << Triple.str();
481 if (Args.hasArg(options::OPT_static)) {
482 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb ||
483 Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb)
484 CmdArgs.push_back("-Bstatic");
486 CmdArgs.push_back("-static");
487 } else if (Args.hasArg(options::OPT_shared)) {
488 CmdArgs.push_back("-shared");
491 if (!Args.hasArg(options::OPT_static)) {
492 if (Args.hasArg(options::OPT_rdynamic))
493 CmdArgs.push_back("-export-dynamic");
495 if (!Args.hasArg(options::OPT_shared)) {
496 const std::string Loader =
497 D.DyldPrefix + ToolChain.getDynamicLinker(Args);
498 CmdArgs.push_back("-dynamic-linker");
499 CmdArgs.push_back(Args.MakeArgString(Loader));
503 CmdArgs.push_back("-o");
504 CmdArgs.push_back(Output.getFilename());
506 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
507 if (!isAndroid && !IsIAMCU) {
508 const char *crt1 = nullptr;
509 if (!Args.hasArg(options::OPT_shared)) {
510 if (Args.hasArg(options::OPT_pg))
518 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
520 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
524 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
526 const char *crtbegin;
527 if (Args.hasArg(options::OPT_static))
528 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
529 else if (Args.hasArg(options::OPT_shared))
530 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
532 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
534 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
536 if (HasCRTBeginEndFiles)
537 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin)));
540 // Add crtfastmath.o if available and fast math is enabled.
541 ToolChain.AddFastMathRuntimeIfAvailable(Args, CmdArgs);
544 Args.AddAllArgs(CmdArgs, options::OPT_L);
545 Args.AddAllArgs(CmdArgs, options::OPT_u);
547 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
550 AddGoldPlugin(ToolChain, Args, CmdArgs, D.getLTOMode() == LTOK_Thin, D);
552 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
553 CmdArgs.push_back("--no-demangle");
555 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
556 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
557 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
558 // The profile runtime also needs access to system libraries.
559 getToolChain().addProfileRTLibs(Args, CmdArgs);
562 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
563 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
564 !Args.hasArg(options::OPT_static);
565 if (OnlyLibstdcxxStatic)
566 CmdArgs.push_back("-Bstatic");
567 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
568 if (OnlyLibstdcxxStatic)
569 CmdArgs.push_back("-Bdynamic");
570 CmdArgs.push_back("-lm");
572 // Silence warnings when linking C code with a C++ '-stdlib' argument.
573 Args.ClaimAllArgs(options::OPT_stdlib_EQ);
575 if (!Args.hasArg(options::OPT_nostdlib)) {
576 if (!Args.hasArg(options::OPT_nodefaultlibs)) {
577 if (Args.hasArg(options::OPT_static))
578 CmdArgs.push_back("--start-group");
580 if (NeedsSanitizerDeps)
581 linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
584 linkXRayRuntimeDeps(ToolChain, Args, CmdArgs);
586 bool WantPthread = Args.hasArg(options::OPT_pthread) ||
587 Args.hasArg(options::OPT_pthreads);
589 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
590 // require librt. Most modern Linux platforms do, but some may not.
591 if (addOpenMPRuntime(CmdArgs, ToolChain, Args,
592 JA.isHostOffloading(Action::OFK_OpenMP),
593 /* GompNeedsRT= */ true))
594 // OpenMP runtimes implies pthreads when using the GNU toolchain.
595 // FIXME: Does this really make sense for all GNU toolchains?
598 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
600 if (WantPthread && !isAndroid)
601 CmdArgs.push_back("-lpthread");
603 if (Args.hasArg(options::OPT_fsplit_stack))
604 CmdArgs.push_back("--wrap=pthread_create");
606 CmdArgs.push_back("-lc");
608 // Add IAMCU specific libs, if needed.
610 CmdArgs.push_back("-lgloss");
612 if (Args.hasArg(options::OPT_static))
613 CmdArgs.push_back("--end-group");
615 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
617 // Add IAMCU specific libs (outside the group), if needed.
619 CmdArgs.push_back("--as-needed");
620 CmdArgs.push_back("-lsoftfp");
621 CmdArgs.push_back("--no-as-needed");
625 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) {
627 if (Args.hasArg(options::OPT_shared))
628 crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
630 crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
632 crtend = isAndroid ? "crtend_android.o" : "crtend.o";
634 if (HasCRTBeginEndFiles)
635 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtend)));
637 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
641 // Add OpenMP offloading linker script args if required.
642 AddOpenMPLinkerScript(getToolChain(), C, Output, Inputs, Args, CmdArgs, JA);
644 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
647 void tools::gnutools::Assembler::ConstructJob(Compilation &C,
649 const InputInfo &Output,
650 const InputInfoList &Inputs,
652 const char *LinkingOutput) const {
653 claimNoWarnArgs(Args);
655 ArgStringList CmdArgs;
657 llvm::Reloc::Model RelocationModel;
660 std::tie(RelocationModel, PICLevel, IsPIE) =
661 ParsePICArgs(getToolChain(), Args);
663 switch (getToolChain().getArch()) {
666 // Add --32/--64 to make sure we get the format we want.
667 // This is incomplete
668 case llvm::Triple::x86:
669 CmdArgs.push_back("--32");
671 case llvm::Triple::x86_64:
672 if (getToolChain().getTriple().getEnvironment() == llvm::Triple::GNUX32)
673 CmdArgs.push_back("--x32");
675 CmdArgs.push_back("--64");
677 case llvm::Triple::ppc:
678 CmdArgs.push_back("-a32");
679 CmdArgs.push_back("-mppc");
680 CmdArgs.push_back("-many");
682 case llvm::Triple::ppc64:
683 CmdArgs.push_back("-a64");
684 CmdArgs.push_back("-mppc64");
685 CmdArgs.push_back("-many");
687 case llvm::Triple::ppc64le:
688 CmdArgs.push_back("-a64");
689 CmdArgs.push_back("-mppc64");
690 CmdArgs.push_back("-many");
691 CmdArgs.push_back("-mlittle-endian");
693 case llvm::Triple::sparc:
694 case llvm::Triple::sparcel: {
695 CmdArgs.push_back("-32");
696 std::string CPU = getCPUName(Args, getToolChain().getTriple());
697 CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
698 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
701 case llvm::Triple::sparcv9: {
702 CmdArgs.push_back("-64");
703 std::string CPU = getCPUName(Args, getToolChain().getTriple());
704 CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
705 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
708 case llvm::Triple::arm:
709 case llvm::Triple::armeb:
710 case llvm::Triple::thumb:
711 case llvm::Triple::thumbeb: {
712 const llvm::Triple &Triple2 = getToolChain().getTriple();
713 switch (Triple2.getSubArch()) {
714 case llvm::Triple::ARMSubArch_v7:
715 CmdArgs.push_back("-mfpu=neon");
717 case llvm::Triple::ARMSubArch_v8:
718 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8");
724 switch (arm::getARMFloatABI(getToolChain(), Args)) {
725 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
726 case arm::FloatABI::Soft:
727 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft"));
729 case arm::FloatABI::SoftFP:
730 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp"));
732 case arm::FloatABI::Hard:
733 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard"));
737 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
739 // FIXME: remove krait check when GNU tools support krait cpu
740 // for now replace it with -mcpu=cortex-a15 to avoid a lower
741 // march from being picked in the absence of a cpu flag.
743 if ((A = Args.getLastArg(options::OPT_mcpu_EQ)) &&
744 StringRef(A->getValue()).equals_lower("krait"))
745 CmdArgs.push_back("-mcpu=cortex-a15");
747 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
748 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ);
751 case llvm::Triple::aarch64:
752 case llvm::Triple::aarch64_be: {
753 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
754 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
757 case llvm::Triple::mips:
758 case llvm::Triple::mipsel:
759 case llvm::Triple::mips64:
760 case llvm::Triple::mips64el: {
763 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
764 ABIName = mips::getGnuCompatibleMipsABIName(ABIName);
766 CmdArgs.push_back("-march");
767 CmdArgs.push_back(CPUName.data());
769 CmdArgs.push_back("-mabi");
770 CmdArgs.push_back(ABIName.data());
772 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
773 // or -mshared (not implemented) is in effect.
774 if (RelocationModel == llvm::Reloc::Static)
775 CmdArgs.push_back("-mno-shared");
777 // LLVM doesn't support -mplt yet and acts as if it is always given.
778 // However, -mplt has no effect with the N64 ABI.
779 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls))
780 CmdArgs.push_back("-call_nonpic");
782 if (getToolChain().getArch() == llvm::Triple::mips ||
783 getToolChain().getArch() == llvm::Triple::mips64)
784 CmdArgs.push_back("-EB");
786 CmdArgs.push_back("-EL");
788 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) {
789 if (StringRef(A->getValue()) == "2008")
790 CmdArgs.push_back(Args.MakeArgString("-mnan=2008"));
793 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
794 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx,
795 options::OPT_mfp64)) {
797 A->render(Args, CmdArgs);
798 } else if (mips::shouldUseFPXX(
799 Args, getToolChain().getTriple(), CPUName, ABIName,
800 mips::getMipsFloatABI(getToolChain().getDriver(), Args)))
801 CmdArgs.push_back("-mfpxx");
803 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
804 // -mno-mips16 is actually -no-mips16.
806 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) {
807 if (A->getOption().matches(options::OPT_mips16)) {
809 A->render(Args, CmdArgs);
812 CmdArgs.push_back("-no-mips16");
816 Args.AddLastArg(CmdArgs, options::OPT_mmicromips,
817 options::OPT_mno_micromips);
818 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp);
819 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2);
821 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) {
822 // Do not use AddLastArg because not all versions of MIPS assembler
823 // support -mmsa / -mno-msa options.
824 if (A->getOption().matches(options::OPT_mmsa))
825 CmdArgs.push_back(Args.MakeArgString("-mmsa"));
828 Args.AddLastArg(CmdArgs, options::OPT_mhard_float,
829 options::OPT_msoft_float);
831 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float,
832 options::OPT_msingle_float);
834 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg,
835 options::OPT_mno_odd_spreg);
837 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
840 case llvm::Triple::systemz: {
841 // Always pass an -march option, since our default of z10 is later
842 // than the GNU assembler's default.
843 StringRef CPUName = systemz::getSystemZTargetCPU(Args);
844 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName));
849 Args.AddAllArgs(CmdArgs, options::OPT_I);
850 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
852 CmdArgs.push_back("-o");
853 CmdArgs.push_back(Output.getFilename());
855 for (const auto &II : Inputs)
856 CmdArgs.push_back(II.getFilename());
858 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as"));
859 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs));
861 // Handle the debug info splitting at object creation time if we're
862 // creating an object.
863 // TODO: Currently only works on linux with newer objcopy.
864 if (Args.hasArg(options::OPT_gsplit_dwarf) &&
865 getToolChain().getTriple().isOSLinux())
866 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
867 SplitDebugName(Args, Inputs[0]));
871 // Filter to remove Multilibs that don't exist as a suffix to Path
872 class FilterNonExistent {
873 StringRef Base, File;
874 vfs::FileSystem &VFS;
877 FilterNonExistent(StringRef Base, StringRef File, vfs::FileSystem &VFS)
878 : Base(Base), File(File), VFS(VFS) {}
879 bool operator()(const Multilib &M) {
880 return !VFS.exists(Base + M.gccSuffix() + File);
883 } // end anonymous namespace
885 static bool isSoftFloatABI(const ArgList &Args) {
886 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
887 options::OPT_mfloat_abi_EQ);
891 return A->getOption().matches(options::OPT_msoft_float) ||
892 (A->getOption().matches(options::OPT_mfloat_abi_EQ) &&
893 A->getValue() == StringRef("soft"));
896 static void addMultilibFlag(bool Enabled, const char *const Flag,
897 std::vector<std::string> &Flags) {
899 Flags.push_back(std::string("+") + Flag);
901 Flags.push_back(std::string("-") + Flag);
904 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
905 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
908 static bool isMips32(llvm::Triple::ArchType Arch) {
909 return Arch == llvm::Triple::mips || Arch == llvm::Triple::mipsel;
912 static bool isMips64(llvm::Triple::ArchType Arch) {
913 return Arch == llvm::Triple::mips64 || Arch == llvm::Triple::mips64el;
916 static bool isMipsEL(llvm::Triple::ArchType Arch) {
917 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
920 static bool isMips16(const ArgList &Args) {
921 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16);
922 return A && A->getOption().matches(options::OPT_mips16);
925 static bool isMicroMips(const ArgList &Args) {
926 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips);
927 return A && A->getOption().matches(options::OPT_mmicromips);
930 static Multilib makeMultilib(StringRef commonSuffix) {
931 return Multilib(commonSuffix, commonSuffix, commonSuffix);
934 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags,
935 FilterNonExistent &NonExistent,
936 DetectedMultilibs &Result) {
937 // Check for Code Sourcery toolchain multilibs
938 MultilibSet CSMipsMultilibs;
940 auto MArchMips16 = makeMultilib("/mips16").flag("+m32").flag("+mips16");
942 auto MArchMicroMips =
943 makeMultilib("/micromips").flag("+m32").flag("+mmicromips");
945 auto MArchDefault = makeMultilib("").flag("-mips16").flag("-mmicromips");
947 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
949 auto SoftFloat = makeMultilib("/soft-float").flag("+msoft-float");
951 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
954 makeMultilib("").flag("-msoft-float").flag("-mnan=2008");
956 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
958 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
960 // Note that this one's osSuffix is ""
961 auto MAbi64 = makeMultilib("")
963 .includeSuffix("/64")
970 .Either(MArchMips16, MArchMicroMips, MArchDefault)
972 .Either(SoftFloat, Nan2008, DefaultFloat)
973 .FilterOut("/micromips/nan2008")
974 .FilterOut("/mips16/nan2008")
975 .Either(BigEndian, LittleEndian)
977 .FilterOut("/mips16.*/64")
978 .FilterOut("/micromips.*/64")
979 .FilterOut(NonExistent)
980 .setIncludeDirsCallback([](const Multilib &M) {
981 std::vector<std::string> Dirs({"/include"});
982 if (StringRef(M.includeSuffix()).startswith("/uclibc"))
984 "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
986 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include");
991 MultilibSet DebianMipsMultilibs;
994 Multilib().gccSuffix("/n32").includeSuffix("/n32").flag("+mabi=n32");
996 Multilib M64 = Multilib()
998 .includeSuffix("/64")
1003 Multilib M32 = Multilib().flag("-m64").flag("+m32").flag("-mabi=n32");
1005 DebianMipsMultilibs =
1006 MultilibSet().Either(M32, M64, MAbiN32).FilterOut(NonExistent);
1009 // Sort candidates. Toolchain that best meets the directories tree goes first.
1010 // Then select the first toolchains matches command line flags.
1011 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
1012 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
1013 std::iter_swap(Candidates, Candidates + 1);
1014 for (const MultilibSet *Candidate : Candidates) {
1015 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1016 if (Candidate == &DebianMipsMultilibs)
1017 Result.BiarchSibling = Multilib();
1018 Result.Multilibs = *Candidate;
1025 static bool findMipsAndroidMultilibs(vfs::FileSystem &VFS, StringRef Path,
1026 const Multilib::flags_list &Flags,
1027 FilterNonExistent &NonExistent,
1028 DetectedMultilibs &Result) {
1030 MultilibSet AndroidMipsMultilibs =
1032 .Maybe(Multilib("/mips-r2").flag("+march=mips32r2"))
1033 .Maybe(Multilib("/mips-r6").flag("+march=mips32r6"))
1034 .FilterOut(NonExistent);
1036 MultilibSet AndroidMipselMultilibs =
1038 .Either(Multilib().flag("+march=mips32"),
1039 Multilib("/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1040 Multilib("/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1041 .FilterOut(NonExistent);
1043 MultilibSet AndroidMips64elMultilibs =
1046 Multilib().flag("+march=mips64r6"),
1047 Multilib("/32/mips-r1", "", "/mips-r1").flag("+march=mips32"),
1048 Multilib("/32/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1049 Multilib("/32/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1050 .FilterOut(NonExistent);
1052 MultilibSet *MS = &AndroidMipsMultilibs;
1053 if (VFS.exists(Path + "/mips-r6"))
1054 MS = &AndroidMipselMultilibs;
1055 else if (VFS.exists(Path + "/32"))
1056 MS = &AndroidMips64elMultilibs;
1057 if (MS->select(Flags, Result.SelectedMultilib)) {
1058 Result.Multilibs = *MS;
1064 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags,
1065 FilterNonExistent &NonExistent,
1066 DetectedMultilibs &Result) {
1067 // Musl toolchain multilibs
1068 MultilibSet MuslMipsMultilibs;
1070 auto MArchMipsR2 = makeMultilib("")
1071 .osSuffix("/mips-r2-hard-musl")
1074 .flag("+march=mips32r2");
1076 auto MArchMipselR2 = makeMultilib("/mipsel-r2-hard-musl")
1079 .flag("+march=mips32r2");
1081 MuslMipsMultilibs = MultilibSet().Either(MArchMipsR2, MArchMipselR2);
1083 // Specify the callback that computes the include directories.
1084 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1085 return std::vector<std::string>(
1086 {"/../sysroot" + M.osSuffix() + "/usr/include"});
1089 if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilib)) {
1090 Result.Multilibs = MuslMipsMultilibs;
1096 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags,
1097 FilterNonExistent &NonExistent,
1098 DetectedMultilibs &Result) {
1099 // CodeScape MTI toolchain v1.2 and early.
1100 MultilibSet MtiMipsMultilibsV1;
1102 auto MArchMips32 = makeMultilib("/mips32")
1105 .flag("-mmicromips")
1106 .flag("+march=mips32");
1108 auto MArchMicroMips = makeMultilib("/micromips")
1111 .flag("+mmicromips");
1113 auto MArchMips64r2 = makeMultilib("/mips64r2")
1116 .flag("+march=mips64r2");
1118 auto MArchMips64 = makeMultilib("/mips64").flag("-m32").flag("+m64").flag(
1121 auto MArchDefault = makeMultilib("")
1124 .flag("-mmicromips")
1125 .flag("+march=mips32r2");
1127 auto Mips16 = makeMultilib("/mips16").flag("+mips16");
1129 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
1132 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1134 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
1136 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1138 auto SoftFloat = makeMultilib("/sof").flag("+msoft-float");
1140 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
1142 MtiMipsMultilibsV1 =
1144 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64,
1148 .FilterOut("/mips64/mips16")
1149 .FilterOut("/mips64r2/mips16")
1150 .FilterOut("/micromips/mips16")
1152 .FilterOut("/micromips/64")
1153 .FilterOut("/mips32/64")
1155 .FilterOut("/mips16/64")
1156 .Either(BigEndian, LittleEndian)
1159 .FilterOut(".*sof/nan2008")
1160 .FilterOut(NonExistent)
1161 .setIncludeDirsCallback([](const Multilib &M) {
1162 std::vector<std::string> Dirs({"/include"});
1163 if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1164 Dirs.push_back("/../../../../sysroot/uclibc/usr/include");
1166 Dirs.push_back("/../../../../sysroot/usr/include");
1171 // CodeScape IMG toolchain starting from v1.3.
1172 MultilibSet MtiMipsMultilibsV2;
1174 auto BeHard = makeMultilib("/mips-r2-hard")
1176 .flag("-msoft-float")
1179 auto BeSoft = makeMultilib("/mips-r2-soft")
1181 .flag("+msoft-float")
1182 .flag("-mnan=2008");
1183 auto ElHard = makeMultilib("/mipsel-r2-hard")
1185 .flag("-msoft-float")
1188 auto ElSoft = makeMultilib("/mipsel-r2-soft")
1190 .flag("+msoft-float")
1192 .flag("-mmicromips");
1193 auto BeHardNan = makeMultilib("/mips-r2-hard-nan2008")
1195 .flag("-msoft-float")
1198 auto ElHardNan = makeMultilib("/mipsel-r2-hard-nan2008")
1200 .flag("-msoft-float")
1203 .flag("-mmicromips");
1204 auto BeHardNanUclibc = makeMultilib("/mips-r2-hard-nan2008-uclibc")
1206 .flag("-msoft-float")
1209 auto ElHardNanUclibc = makeMultilib("/mipsel-r2-hard-nan2008-uclibc")
1211 .flag("-msoft-float")
1214 auto BeHardUclibc = makeMultilib("/mips-r2-hard-uclibc")
1216 .flag("-msoft-float")
1219 auto ElHardUclibc = makeMultilib("/mipsel-r2-hard-uclibc")
1221 .flag("-msoft-float")
1224 auto ElMicroHardNan = makeMultilib("/micromipsel-r2-hard-nan2008")
1226 .flag("-msoft-float")
1228 .flag("+mmicromips");
1229 auto ElMicroSoft = makeMultilib("/micromipsel-r2-soft")
1231 .flag("+msoft-float")
1233 .flag("+mmicromips");
1236 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1238 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1240 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1242 MtiMipsMultilibsV2 =
1244 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1245 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1246 ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1247 .Either(O32, N32, N64)
1248 .FilterOut(NonExistent)
1249 .setIncludeDirsCallback([](const Multilib &M) {
1250 return std::vector<std::string>({"/../../../../sysroot" +
1252 "/../usr/include"});
1254 .setFilePathsCallback([](const Multilib &M) {
1255 return std::vector<std::string>(
1256 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1259 for (auto Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1260 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1261 Result.Multilibs = *Candidate;
1268 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags,
1269 FilterNonExistent &NonExistent,
1270 DetectedMultilibs &Result) {
1271 // CodeScape IMG toolchain v1.2 and early.
1272 MultilibSet ImgMultilibsV1;
1274 auto Mips64r6 = makeMultilib("/mips64r6").flag("+m64").flag("-m32");
1276 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1279 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1285 .Maybe(LittleEndian)
1286 .FilterOut(NonExistent)
1287 .setIncludeDirsCallback([](const Multilib &M) {
1288 return std::vector<std::string>(
1289 {"/include", "/../../../../sysroot/usr/include"});
1293 // CodeScape IMG toolchain starting from v1.3.
1294 MultilibSet ImgMultilibsV2;
1296 auto BeHard = makeMultilib("/mips-r6-hard")
1298 .flag("-msoft-float")
1299 .flag("-mmicromips");
1300 auto BeSoft = makeMultilib("/mips-r6-soft")
1302 .flag("+msoft-float")
1303 .flag("-mmicromips");
1304 auto ElHard = makeMultilib("/mipsel-r6-hard")
1306 .flag("-msoft-float")
1307 .flag("-mmicromips");
1308 auto ElSoft = makeMultilib("/mipsel-r6-soft")
1310 .flag("+msoft-float")
1311 .flag("-mmicromips");
1312 auto BeMicroHard = makeMultilib("/micromips-r6-hard")
1314 .flag("-msoft-float")
1315 .flag("+mmicromips");
1316 auto BeMicroSoft = makeMultilib("/micromips-r6-soft")
1318 .flag("+msoft-float")
1319 .flag("+mmicromips");
1320 auto ElMicroHard = makeMultilib("/micromipsel-r6-hard")
1322 .flag("-msoft-float")
1323 .flag("+mmicromips");
1324 auto ElMicroSoft = makeMultilib("/micromipsel-r6-soft")
1326 .flag("+msoft-float")
1327 .flag("+mmicromips");
1330 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1332 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1334 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1338 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1339 ElMicroHard, ElMicroSoft})
1340 .Either(O32, N32, N64)
1341 .FilterOut(NonExistent)
1342 .setIncludeDirsCallback([](const Multilib &M) {
1343 return std::vector<std::string>({"/../../../../sysroot" +
1345 "/../usr/include"});
1347 .setFilePathsCallback([](const Multilib &M) {
1348 return std::vector<std::string>(
1349 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1352 for (auto Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1353 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1354 Result.Multilibs = *Candidate;
1361 bool clang::driver::findMIPSMultilibs(const Driver &D,
1362 const llvm::Triple &TargetTriple,
1363 StringRef Path, const ArgList &Args,
1364 DetectedMultilibs &Result) {
1365 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1369 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName);
1371 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1373 Multilib::flags_list Flags;
1374 addMultilibFlag(isMips32(TargetArch), "m32", Flags);
1375 addMultilibFlag(isMips64(TargetArch), "m64", Flags);
1376 addMultilibFlag(isMips16(Args), "mips16", Flags);
1377 addMultilibFlag(CPUName == "mips32", "march=mips32", Flags);
1378 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" ||
1379 CPUName == "mips32r5" || CPUName == "p5600",
1380 "march=mips32r2", Flags);
1381 addMultilibFlag(CPUName == "mips32r6", "march=mips32r6", Flags);
1382 addMultilibFlag(CPUName == "mips64", "march=mips64", Flags);
1383 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" ||
1384 CPUName == "mips64r5" || CPUName == "octeon",
1385 "march=mips64r2", Flags);
1386 addMultilibFlag(CPUName == "mips64r6", "march=mips64r6", Flags);
1387 addMultilibFlag(isMicroMips(Args), "mmicromips", Flags);
1388 addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags);
1389 addMultilibFlag(tools::mips::isNaN2008(Args, TargetTriple), "mnan=2008",
1391 addMultilibFlag(ABIName == "n32", "mabi=n32", Flags);
1392 addMultilibFlag(ABIName == "n64", "mabi=n64", Flags);
1393 addMultilibFlag(isSoftFloatABI(Args), "msoft-float", Flags);
1394 addMultilibFlag(!isSoftFloatABI(Args), "mhard-float", Flags);
1395 addMultilibFlag(isMipsEL(TargetArch), "EL", Flags);
1396 addMultilibFlag(!isMipsEL(TargetArch), "EB", Flags);
1398 if (TargetTriple.isAndroid())
1399 return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent,
1402 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1403 TargetTriple.getOS() == llvm::Triple::Linux &&
1404 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1405 return findMipsMuslMultilibs(Flags, NonExistent, Result);
1407 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1408 TargetTriple.getOS() == llvm::Triple::Linux &&
1409 TargetTriple.getEnvironment() == llvm::Triple::GNU)
1410 return findMipsMtiMultilibs(Flags, NonExistent, Result);
1412 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1413 TargetTriple.getOS() == llvm::Triple::Linux &&
1414 TargetTriple.getEnvironment() == llvm::Triple::GNU)
1415 return findMipsImgMultilibs(Flags, NonExistent, Result);
1417 if (findMipsCsMultilibs(Flags, NonExistent, Result))
1420 // Fallback to the regular toolchain-tree structure.
1422 Result.Multilibs.push_back(Default);
1423 Result.Multilibs.FilterOut(NonExistent);
1425 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) {
1426 Result.BiarchSibling = Multilib();
1433 static void findAndroidArmMultilibs(const Driver &D,
1434 const llvm::Triple &TargetTriple,
1435 StringRef Path, const ArgList &Args,
1436 DetectedMultilibs &Result) {
1437 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1438 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1439 Multilib ArmV7Multilib = makeMultilib("/armv7-a")
1442 Multilib ThumbMultilib = makeMultilib("/thumb")
1445 Multilib ArmV7ThumbMultilib = makeMultilib("/armv7-a/thumb")
1448 Multilib DefaultMultilib = makeMultilib("")
1451 MultilibSet AndroidArmMultilibs =
1453 .Either(ThumbMultilib, ArmV7Multilib,
1454 ArmV7ThumbMultilib, DefaultMultilib)
1455 .FilterOut(NonExistent);
1457 Multilib::flags_list Flags;
1458 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ);
1459 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1460 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1461 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1462 bool IsThumbMode = IsThumbArch ||
1463 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) ||
1464 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::IK_THUMB);
1465 bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1466 (llvm::ARM::parseArchVersion(Arch) == 7 ||
1467 (IsArmArch && Arch == "" && IsV7SubArch));
1468 addMultilibFlag(IsArmV7Mode, "armv7", Flags);
1469 addMultilibFlag(IsThumbMode, "thumb", Flags);
1471 if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilib))
1472 Result.Multilibs = AndroidArmMultilibs;
1475 static bool findBiarchMultilibs(const Driver &D,
1476 const llvm::Triple &TargetTriple,
1477 StringRef Path, const ArgList &Args,
1478 bool NeedsBiarchSuffix,
1479 DetectedMultilibs &Result) {
1480 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1481 // in what would normally be GCCInstallPath and put the 64-bit
1482 // libs in a subdirectory named 64. The simple logic we follow is that
1483 // *if* there is a subdirectory of the right name with crtbegin.o in it,
1484 // we use that. If not, and if not a biarch triple alias, we look for
1485 // crtbegin.o without the subdirectory.
1488 Multilib Alt64 = Multilib()
1490 .includeSuffix("/64")
1494 Multilib Alt32 = Multilib()
1496 .includeSuffix("/32")
1500 Multilib Altx32 = Multilib()
1502 .includeSuffix("/x32")
1507 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
1508 FilterNonExistent NonExistent(
1509 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
1511 // Determine default multilib from: 32, 64, x32
1512 // Also handle cases such as 64 on 32, 32 on 64, etc.
1513 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
1514 const bool IsX32 = TargetTriple.getEnvironment() == llvm::Triple::GNUX32;
1515 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
1517 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
1519 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
1522 if (TargetTriple.isArch32Bit())
1523 Want = NeedsBiarchSuffix ? WANT64 : WANT32;
1525 Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
1527 Want = NeedsBiarchSuffix ? WANT32 : WANT64;
1531 Default.flag("+m32").flag("-m64").flag("-mx32");
1532 else if (Want == WANT64)
1533 Default.flag("-m32").flag("+m64").flag("-mx32");
1534 else if (Want == WANTX32)
1535 Default.flag("-m32").flag("-m64").flag("+mx32");
1539 Result.Multilibs.push_back(Default);
1540 Result.Multilibs.push_back(Alt64);
1541 Result.Multilibs.push_back(Alt32);
1542 Result.Multilibs.push_back(Altx32);
1544 Result.Multilibs.FilterOut(NonExistent);
1546 Multilib::flags_list Flags;
1547 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "m64", Flags);
1548 addMultilibFlag(TargetTriple.isArch32Bit(), "m32", Flags);
1549 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "mx32", Flags);
1551 if (!Result.Multilibs.select(Flags, Result.SelectedMultilib))
1554 if (Result.SelectedMultilib == Alt64 || Result.SelectedMultilib == Alt32 ||
1555 Result.SelectedMultilib == Altx32)
1556 Result.BiarchSibling = Default;
1561 /// Generic_GCC - A tool chain using the 'gcc' command to perform
1562 /// all subcommands; this relies on gcc translating the majority of
1563 /// command line options.
1565 /// \brief Less-than for GCCVersion, implementing a Strict Weak Ordering.
1566 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
1568 StringRef RHSPatchSuffix) const {
1569 if (Major != RHSMajor)
1570 return Major < RHSMajor;
1571 if (Minor != RHSMinor)
1572 return Minor < RHSMinor;
1573 if (Patch != RHSPatch) {
1574 // Note that versions without a specified patch sort higher than those with
1581 // Otherwise just sort on the patch itself.
1582 return Patch < RHSPatch;
1584 if (PatchSuffix != RHSPatchSuffix) {
1585 // Sort empty suffixes higher.
1586 if (RHSPatchSuffix.empty())
1588 if (PatchSuffix.empty())
1591 // Provide a lexicographic sort to make this a total ordering.
1592 return PatchSuffix < RHSPatchSuffix;
1595 // The versions are equal.
1599 static llvm::StringRef getGCCToolchainDir(const ArgList &Args) {
1600 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain);
1602 return A->getValue();
1603 return GCC_INSTALL_PREFIX;
1606 /// \brief Initialize a GCCInstallationDetector from the driver.
1608 /// This performs all of the autodetection and sets up the various paths.
1609 /// Once constructed, a GCCInstallationDetector is essentially immutable.
1611 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
1612 /// should instead pull the target out of the driver. This is currently
1613 /// necessary because the driver doesn't store the final version of the target
1615 void Generic_GCC::GCCInstallationDetector::init(
1616 const llvm::Triple &TargetTriple, const ArgList &Args,
1617 ArrayRef<std::string> ExtraTripleAliases) {
1618 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
1619 ? TargetTriple.get64BitArchVariant()
1620 : TargetTriple.get32BitArchVariant();
1621 // The library directories which may contain GCC installations.
1622 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
1623 // The compatible GCC triples for this particular architecture.
1624 SmallVector<StringRef, 16> CandidateTripleAliases;
1625 SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
1626 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs,
1627 CandidateTripleAliases, CandidateBiarchLibDirs,
1628 CandidateBiarchTripleAliases);
1630 // Compute the set of prefixes for our search.
1631 SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(),
1632 D.PrefixDirs.end());
1634 StringRef GCCToolchainDir = getGCCToolchainDir(Args);
1635 if (GCCToolchainDir != "") {
1636 if (GCCToolchainDir.back() == '/')
1637 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
1639 Prefixes.push_back(GCCToolchainDir);
1641 // If we have a SysRoot, try that first.
1642 if (!D.SysRoot.empty()) {
1643 Prefixes.push_back(D.SysRoot);
1644 Prefixes.push_back(D.SysRoot + "/usr");
1647 // Then look for gcc installed alongside clang.
1648 Prefixes.push_back(D.InstalledDir + "/..");
1650 // Then look for distribution supplied gcc installations.
1651 if (D.SysRoot.empty()) {
1652 // Look for RHEL devtoolsets.
1653 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr");
1654 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr");
1655 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr");
1656 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr");
1657 // And finally in /usr.
1658 Prefixes.push_back("/usr");
1662 // Try to respect gcc-config on Gentoo. However, do that only
1663 // if --gcc-toolchain is not provided or equal to the Gentoo install
1664 // in /usr. This avoids accidentally enforcing the system GCC version
1665 // when using a custom toolchain.
1666 if (GCCToolchainDir == "" || GCCToolchainDir == D.SysRoot + "/usr") {
1667 for (StringRef CandidateTriple : ExtraTripleAliases) {
1668 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
1671 for (StringRef CandidateTriple : CandidateTripleAliases) {
1672 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
1675 for (StringRef CandidateTriple : CandidateBiarchTripleAliases) {
1676 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true))
1681 // Loop over the various components which exist and select the best GCC
1682 // installation available. GCC installs are ranked by version number.
1683 Version = GCCVersion::Parse("0.0.0");
1684 for (const std::string &Prefix : Prefixes) {
1685 if (!D.getVFS().exists(Prefix))
1687 for (StringRef Suffix : CandidateLibDirs) {
1688 const std::string LibDir = Prefix + Suffix.str();
1689 if (!D.getVFS().exists(LibDir))
1691 for (StringRef Candidate : ExtraTripleAliases) // Try these first.
1692 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
1693 for (StringRef Candidate : CandidateTripleAliases)
1694 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate);
1696 for (StringRef Suffix : CandidateBiarchLibDirs) {
1697 const std::string LibDir = Prefix + Suffix.str();
1698 if (!D.getVFS().exists(LibDir))
1700 for (StringRef Candidate : CandidateBiarchTripleAliases)
1701 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate,
1702 /*NeedsBiarchSuffix=*/ true);
1707 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
1708 for (const auto &InstallPath : CandidateGCCInstallPaths)
1709 OS << "Found candidate GCC installation: " << InstallPath << "\n";
1711 if (!GCCInstallPath.empty())
1712 OS << "Selected GCC installation: " << GCCInstallPath << "\n";
1714 for (const auto &Multilib : Multilibs)
1715 OS << "Candidate multilib: " << Multilib << "\n";
1717 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault())
1718 OS << "Selected multilib: " << SelectedMultilib << "\n";
1721 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const {
1722 if (BiarchSibling.hasValue()) {
1723 M = BiarchSibling.getValue();
1729 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
1730 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
1731 SmallVectorImpl<StringRef> &LibDirs,
1732 SmallVectorImpl<StringRef> &TripleAliases,
1733 SmallVectorImpl<StringRef> &BiarchLibDirs,
1734 SmallVectorImpl<StringRef> &BiarchTripleAliases) {
1735 // Declare a bunch of static data sets that we'll select between below. These
1736 // are specifically designed to always refer to string literals to avoid any
1737 // lifetime or initialization issues.
1738 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
1739 static const char *const AArch64Triples[] = {
1740 "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-linux-android",
1741 "aarch64-redhat-linux", "aarch64-suse-linux"};
1742 static const char *const AArch64beLibDirs[] = {"/lib"};
1743 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu",
1744 "aarch64_be-linux-gnu"};
1746 static const char *const ARMLibDirs[] = {"/lib"};
1747 static const char *const ARMTriples[] = {"arm-linux-gnueabi",
1748 "arm-linux-androideabi"};
1749 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
1750 "armv7hl-redhat-linux-gnueabi"};
1751 static const char *const ARMebLibDirs[] = {"/lib"};
1752 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi",
1753 "armeb-linux-androideabi"};
1754 static const char *const ARMebHFTriples[] = {
1755 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
1757 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
1758 static const char *const X86_64Triples[] = {
1759 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
1760 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
1761 "x86_64-redhat-linux", "x86_64-suse-linux",
1762 "x86_64-manbo-linux-gnu", "x86_64-linux-gnu",
1763 "x86_64-slackware-linux", "x86_64-linux-android",
1764 "x86_64-unknown-linux"};
1765 static const char *const X32LibDirs[] = {"/libx32"};
1766 static const char *const X86LibDirs[] = {"/lib32", "/lib"};
1767 static const char *const X86Triples[] = {
1768 "i686-linux-gnu", "i686-pc-linux-gnu", "i486-linux-gnu",
1769 "i386-linux-gnu", "i386-redhat-linux6E", "i686-redhat-linux",
1770 "i586-redhat-linux", "i386-redhat-linux", "i586-suse-linux",
1771 "i486-slackware-linux", "i686-montavista-linux", "i686-linux-android",
1774 static const char *const MIPSLibDirs[] = {"/lib"};
1775 static const char *const MIPSTriples[] = {"mips-linux-gnu", "mips-mti-linux",
1776 "mips-mti-linux-gnu",
1777 "mips-img-linux-gnu"};
1778 static const char *const MIPSELLibDirs[] = {"/lib"};
1779 static const char *const MIPSELTriples[] = {"mipsel-linux-gnu",
1780 "mips-img-linux-gnu"};
1782 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
1783 static const char *const MIPS64Triples[] = {
1784 "mips64-linux-gnu", "mips-mti-linux-gnu", "mips-img-linux-gnu",
1785 "mips64-linux-gnuabi64"};
1786 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
1787 static const char *const MIPS64ELTriples[] = {
1788 "mips64el-linux-gnu", "mips-mti-linux-gnu", "mips-img-linux-gnu",
1789 "mips64el-linux-gnuabi64"};
1791 static const char *const MIPSELAndroidLibDirs[] = {"/lib", "/libr2",
1793 static const char *const MIPSELAndroidTriples[] = {"mipsel-linux-android"};
1794 static const char *const MIPS64ELAndroidLibDirs[] = {"/lib64", "/lib",
1795 "/libr2", "/libr6"};
1796 static const char *const MIPS64ELAndroidTriples[] = {
1797 "mips64el-linux-android"};
1799 static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
1800 static const char *const PPCTriples[] = {
1801 "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe",
1802 "powerpc-suse-linux", "powerpc-montavista-linuxspe"};
1803 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
1804 static const char *const PPC64Triples[] = {
1805 "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu",
1806 "powerpc64-suse-linux", "ppc64-redhat-linux"};
1807 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
1808 static const char *const PPC64LETriples[] = {
1809 "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu",
1810 "powerpc64le-suse-linux", "ppc64le-redhat-linux"};
1812 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
1813 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
1814 "sparcv8-linux-gnu"};
1815 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
1816 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
1817 "sparcv9-linux-gnu"};
1819 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
1820 static const char *const SystemZTriples[] = {
1821 "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu",
1822 "s390x-suse-linux", "s390x-redhat-linux"};
1825 static const char *const SolarisSPARCLibDirs[] = {"/gcc"};
1826 static const char *const SolarisSPARCTriples[] = {"sparc-sun-solaris2.11",
1827 "i386-pc-solaris2.11"};
1832 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
1833 LibDirs.append(begin(SolarisSPARCLibDirs), end(SolarisSPARCLibDirs));
1834 TripleAliases.append(begin(SolarisSPARCTriples), end(SolarisSPARCTriples));
1838 switch (TargetTriple.getArch()) {
1839 case llvm::Triple::aarch64:
1840 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
1841 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
1842 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
1843 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
1845 case llvm::Triple::aarch64_be:
1846 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
1847 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
1848 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
1849 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
1851 case llvm::Triple::arm:
1852 case llvm::Triple::thumb:
1853 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
1854 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
1855 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples));
1857 TripleAliases.append(begin(ARMTriples), end(ARMTriples));
1860 case llvm::Triple::armeb:
1861 case llvm::Triple::thumbeb:
1862 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs));
1863 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
1864 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples));
1866 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples));
1869 case llvm::Triple::x86_64:
1870 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
1871 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
1872 // x32 is always available when x86_64 is available, so adding it as
1873 // secondary arch with x86_64 triples
1874 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32) {
1875 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
1876 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
1878 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
1879 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples));
1882 case llvm::Triple::x86:
1883 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
1884 // MCU toolchain is 32 bit only and its triple alias is TargetTriple
1885 // itself, which will be appended below.
1886 if (!TargetTriple.isOSIAMCU()) {
1887 TripleAliases.append(begin(X86Triples), end(X86Triples));
1888 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
1889 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
1892 case llvm::Triple::mips:
1893 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
1894 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
1895 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
1896 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
1898 case llvm::Triple::mipsel:
1899 if (TargetTriple.isAndroid()) {
1900 LibDirs.append(begin(MIPSELAndroidLibDirs), end(MIPSELAndroidLibDirs));
1901 TripleAliases.append(begin(MIPSELAndroidTriples),
1902 end(MIPSELAndroidTriples));
1903 BiarchLibDirs.append(begin(MIPS64ELAndroidLibDirs),
1904 end(MIPS64ELAndroidLibDirs));
1905 BiarchTripleAliases.append(begin(MIPS64ELAndroidTriples),
1906 end(MIPS64ELAndroidTriples));
1909 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
1910 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
1911 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
1912 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
1913 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
1916 case llvm::Triple::mips64:
1917 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
1918 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
1919 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
1920 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
1922 case llvm::Triple::mips64el:
1923 if (TargetTriple.isAndroid()) {
1924 LibDirs.append(begin(MIPS64ELAndroidLibDirs),
1925 end(MIPS64ELAndroidLibDirs));
1926 TripleAliases.append(begin(MIPS64ELAndroidTriples),
1927 end(MIPS64ELAndroidTriples));
1928 BiarchLibDirs.append(begin(MIPSELAndroidLibDirs),
1929 end(MIPSELAndroidLibDirs));
1930 BiarchTripleAliases.append(begin(MIPSELAndroidTriples),
1931 end(MIPSELAndroidTriples));
1934 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
1935 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
1936 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
1937 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
1938 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
1941 case llvm::Triple::ppc:
1942 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
1943 TripleAliases.append(begin(PPCTriples), end(PPCTriples));
1944 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
1945 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
1947 case llvm::Triple::ppc64:
1948 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
1949 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
1950 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
1951 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples));
1953 case llvm::Triple::ppc64le:
1954 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
1955 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
1957 case llvm::Triple::sparc:
1958 case llvm::Triple::sparcel:
1959 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
1960 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
1961 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
1962 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
1964 case llvm::Triple::sparcv9:
1965 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
1966 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
1967 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
1968 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
1970 case llvm::Triple::systemz:
1971 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs));
1972 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples));
1975 // By default, just rely on the standard lib directories and the original
1980 // Always append the drivers target triple to the end, in case it doesn't
1981 // match any of our aliases.
1982 TripleAliases.push_back(TargetTriple.str());
1984 // Also include the multiarch variant if it's different.
1985 if (TargetTriple.str() != BiarchTriple.str())
1986 BiarchTripleAliases.push_back(BiarchTriple.str());
1989 void Generic_GCC::GCCInstallationDetector::scanLibDirForGCCTripleSolaris(
1990 const llvm::Triple &TargetArch, const llvm::opt::ArgList &Args,
1991 const std::string &LibDir, StringRef CandidateTriple,
1992 bool NeedsBiarchSuffix) {
1993 // Solaris is a special case. The GCC installation is under
1994 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/, so we
1995 // need to iterate twice.
1997 for (vfs::directory_iterator LI = D.getVFS().dir_begin(LibDir, EC), LE;
1998 !EC && LI != LE; LI = LI.increment(EC)) {
1999 StringRef VersionText = llvm::sys::path::filename(LI->getName());
2000 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2002 if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2003 if (!CandidateGCCInstallPaths.insert(LI->getName()).second)
2004 continue; // Saw this path before; no need to look at it again.
2005 if (CandidateVersion.isOlderThan(4, 1, 1))
2007 if (CandidateVersion <= Version)
2011 LibDir + "/" + VersionText.str() + "/lib/gcc/" + CandidateTriple.str();
2012 if (!D.getVFS().exists(GCCInstallPath))
2015 // If we make it here there has to be at least one GCC version, let's just
2016 // use the latest one.
2017 std::error_code EEC;
2018 for (vfs::directory_iterator
2019 LLI = D.getVFS().dir_begin(GCCInstallPath, EEC),
2021 !EEC && LLI != LLE; LLI = LLI.increment(EEC)) {
2023 StringRef SubVersionText = llvm::sys::path::filename(LLI->getName());
2024 GCCVersion CandidateSubVersion = GCCVersion::Parse(SubVersionText);
2026 if (CandidateSubVersion > Version)
2027 Version = CandidateSubVersion;
2030 GCCTriple.setTriple(CandidateTriple);
2032 GCCInstallPath += "/" + Version.Text;
2033 GCCParentLibPath = GCCInstallPath + "/../../../../";
2039 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2040 const llvm::Triple &TargetTriple, const ArgList &Args,
2041 StringRef Path, bool NeedsBiarchSuffix) {
2042 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2043 DetectedMultilibs Detected;
2045 // Android standalone toolchain could have multilibs for ARM and Thumb.
2046 // Debian mips multilibs behave more like the rest of the biarch ones,
2047 // so handle them there
2048 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) {
2049 // It should also work without multilibs in a simplified toolchain.
2050 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected);
2051 } else if (tools::isMipsArch(TargetArch)) {
2052 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected))
2054 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2055 NeedsBiarchSuffix, Detected)) {
2059 Multilibs = Detected.Multilibs;
2060 SelectedMultilib = Detected.SelectedMultilib;
2061 BiarchSibling = Detected.BiarchSibling;
2066 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2067 const llvm::Triple &TargetTriple, const ArgList &Args,
2068 const std::string &LibDir, StringRef CandidateTriple,
2069 bool NeedsBiarchSuffix) {
2070 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
2071 scanLibDirForGCCTripleSolaris(TargetTriple, Args, LibDir, CandidateTriple,
2076 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2077 // Locations relative to the system lib directory where GCC's triple-specific
2078 // directories might reside.
2079 struct GCCLibSuffix {
2080 // Path from system lib directory to GCC triple-specific directory.
2081 std::string LibSuffix;
2082 // Path from GCC triple-specific directory back to system lib directory.
2083 // This is one '..' component per component in LibSuffix.
2084 StringRef ReversePath;
2085 // Whether this library suffix is relevant for the triple.
2088 // This is the normal place.
2089 {"gcc/" + CandidateTriple.str(), "../..", true},
2091 // Debian puts cross-compilers in gcc-cross.
2092 {"gcc-cross/" + CandidateTriple.str(), "../..", true},
2094 // The Freescale PPC SDK has the gcc libraries in
2095 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2096 // this on Freescale triples, though, since some systems put a *lot* of
2097 // files in that location, not just GCC installation data.
2098 {CandidateTriple.str(), "..",
2099 TargetTriple.getVendor() == llvm::Triple::Freescale},
2101 // Natively multiarch systems sometimes put the GCC triple-specific
2102 // directory within their multiarch lib directory, resulting in the
2103 // triple appearing twice.
2104 {CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), "../../..", true},
2106 // Deal with cases (on Ubuntu) where the system architecture could be i386
2107 // but the GCC target architecture could be (say) i686.
2108 // FIXME: It may be worthwhile to generalize this and look for a second
2110 {"i386-linux-gnu/gcc/" + CandidateTriple.str(), "../../..",
2111 TargetArch == llvm::Triple::x86}
2114 for (auto &Suffix : Suffixes) {
2118 StringRef LibSuffix = Suffix.LibSuffix;
2120 for (vfs::directory_iterator
2121 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC),
2123 !EC && LI != LE; LI = LI.increment(EC)) {
2124 StringRef VersionText = llvm::sys::path::filename(LI->getName());
2125 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2126 if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2127 if (!CandidateGCCInstallPaths.insert(LI->getName()).second)
2128 continue; // Saw this path before; no need to look at it again.
2129 if (CandidateVersion.isOlderThan(4, 1, 1))
2131 if (CandidateVersion <= Version)
2134 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->getName(),
2138 Version = CandidateVersion;
2139 GCCTriple.setTriple(CandidateTriple);
2140 // FIXME: We hack together the directory name here instead of
2141 // using LI to ensure stable path separators across Windows and
2143 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2144 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str();
2150 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2151 const llvm::Triple &TargetTriple, const ArgList &Args,
2152 StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2153 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2154 D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/config-" +
2155 CandidateTriple.str());
2157 SmallVector<StringRef, 2> Lines;
2158 File.get()->getBuffer().split(Lines, "\n");
2159 for (StringRef Line : Lines) {
2161 // CURRENT=triple-version
2162 if (Line.consume_front("CURRENT=")) {
2163 const std::pair<StringRef, StringRef> ActiveVersion =
2165 // Note: Strictly speaking, we should be reading
2166 // /etc/env.d/gcc/${CURRENT} now. However, the file doesn't
2167 // contain anything new or especially useful to us.
2168 const std::string GentooPath = D.SysRoot + "/usr/lib/gcc/" +
2169 ActiveVersion.first.str() + "/" +
2170 ActiveVersion.second.str();
2171 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) {
2172 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath,
2176 Version = GCCVersion::Parse(ActiveVersion.second);
2177 GCCInstallPath = GentooPath;
2178 GCCParentLibPath = GentooPath + "/../../..";
2179 GCCTriple.setTriple(ActiveVersion.first);
2190 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
2191 const ArgList &Args)
2192 : ToolChain(D, Triple, Args), GCCInstallation(D),
2193 CudaInstallation(D, Triple, Args) {
2194 getProgramPaths().push_back(getDriver().getInstalledDir());
2195 if (getDriver().getInstalledDir() != getDriver().Dir)
2196 getProgramPaths().push_back(getDriver().Dir);
2199 Generic_GCC::~Generic_GCC() {}
2201 Tool *Generic_GCC::getTool(Action::ActionClass AC) const {
2203 case Action::PreprocessJobClass:
2205 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this));
2206 return Preprocess.get();
2207 case Action::CompileJobClass:
2209 Compile.reset(new tools::gcc::Compiler(*this));
2210 return Compile.get();
2212 return ToolChain::getTool(AC);
2216 Tool *Generic_GCC::buildAssembler() const {
2217 return new tools::gnutools::Assembler(*this);
2220 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
2222 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
2223 // Print the information about how we detected the GCC installation.
2224 GCCInstallation.print(OS);
2225 CudaInstallation.print(OS);
2228 bool Generic_GCC::IsUnwindTablesDefault() const {
2229 return getArch() == llvm::Triple::x86_64;
2232 bool Generic_GCC::isPICDefault() const {
2233 switch (getArch()) {
2234 case llvm::Triple::x86_64:
2235 return getTriple().isOSWindows();
2236 case llvm::Triple::ppc64:
2237 case llvm::Triple::ppc64le:
2238 return !getTriple().isOSBinFormatMachO() && !getTriple().isMacOSX();
2239 case llvm::Triple::mips64:
2240 case llvm::Triple::mips64el:
2247 bool Generic_GCC::isPIEDefault() const { return false; }
2249 bool Generic_GCC::isPICDefaultForced() const {
2250 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
2253 bool Generic_GCC::IsIntegratedAssemblerDefault() const {
2254 switch (getTriple().getArch()) {
2255 case llvm::Triple::x86:
2256 case llvm::Triple::x86_64:
2257 case llvm::Triple::aarch64:
2258 case llvm::Triple::aarch64_be:
2259 case llvm::Triple::arm:
2260 case llvm::Triple::armeb:
2261 case llvm::Triple::avr:
2262 case llvm::Triple::bpfel:
2263 case llvm::Triple::bpfeb:
2264 case llvm::Triple::thumb:
2265 case llvm::Triple::thumbeb:
2266 case llvm::Triple::ppc:
2267 case llvm::Triple::ppc64:
2268 case llvm::Triple::ppc64le:
2269 case llvm::Triple::systemz:
2270 case llvm::Triple::mips:
2271 case llvm::Triple::mipsel:
2273 case llvm::Triple::mips64:
2274 case llvm::Triple::mips64el:
2275 // Enabled for Debian mips64/mips64el only. Other targets are unable to
2276 // distinguish N32 from N64.
2277 if (getTriple().getEnvironment() == llvm::Triple::GNUABI64)
2285 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
2286 ArgStringList &CC1Args) const {
2287 if (DriverArgs.hasArg(options::OPT_nostdlibinc) ||
2288 DriverArgs.hasArg(options::OPT_nostdincxx))
2291 switch (GetCXXStdlibType(DriverArgs)) {
2292 case ToolChain::CST_Libcxx: {
2293 std::string Path = findLibCxxIncludePath();
2295 addSystemInclude(DriverArgs, CC1Args, Path);
2299 case ToolChain::CST_Libstdcxx:
2300 addLibStdCxxIncludePaths(DriverArgs, CC1Args);
2305 std::string Generic_GCC::findLibCxxIncludePath() const {
2306 // FIXME: The Linux behavior would probaby be a better approach here.
2307 return getDriver().SysRoot + "/usr/include/c++/v1";
2311 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
2312 llvm::opt::ArgStringList &CC1Args) const {
2313 // By default, we don't assume we know where libstdc++ might be installed.
2314 // FIXME: If we have a valid GCCInstallation, use it.
2317 /// \brief Helper to add the variant paths of a libstdc++ installation.
2318 bool Generic_GCC::addLibStdCXXIncludePaths(
2319 Twine Base, Twine Suffix, StringRef GCCTriple, StringRef GCCMultiarchTriple,
2320 StringRef TargetMultiarchTriple, Twine IncludeSuffix,
2321 const ArgList &DriverArgs, ArgStringList &CC1Args) const {
2322 if (!getVFS().exists(Base + Suffix))
2325 addSystemInclude(DriverArgs, CC1Args, Base + Suffix);
2327 // The vanilla GCC layout of libstdc++ headers uses a triple subdirectory. If
2328 // that path exists or we have neither a GCC nor target multiarch triple, use
2329 // this vanilla search path.
2330 if ((GCCMultiarchTriple.empty() && TargetMultiarchTriple.empty()) ||
2331 getVFS().exists(Base + Suffix + "/" + GCCTriple + IncludeSuffix)) {
2332 addSystemInclude(DriverArgs, CC1Args,
2333 Base + Suffix + "/" + GCCTriple + IncludeSuffix);
2335 // Otherwise try to use multiarch naming schemes which have normalized the
2336 // triples and put the triple before the suffix.
2338 // GCC surprisingly uses *both* the GCC triple with a multilib suffix and
2339 // the target triple, so we support that here.
2340 addSystemInclude(DriverArgs, CC1Args,
2341 Base + "/" + GCCMultiarchTriple + Suffix + IncludeSuffix);
2342 addSystemInclude(DriverArgs, CC1Args,
2343 Base + "/" + TargetMultiarchTriple + Suffix);
2346 addSystemInclude(DriverArgs, CC1Args, Base + Suffix + "/backward");
2350 llvm::opt::DerivedArgList *
2351 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef,
2352 Action::OffloadKind DeviceOffloadKind) const {
2354 // If this tool chain is used for an OpenMP offloading device we have to make
2355 // sure we always generate a shared library regardless of the commands the
2356 // user passed to the host. This is required because the runtime library
2357 // is required to load the device image dynamically at run time.
2358 if (DeviceOffloadKind == Action::OFK_OpenMP) {
2359 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
2360 const OptTable &Opts = getDriver().getOpts();
2362 // Request the shared library. Given that these options are decided
2363 // implicitly, they do not refer to any base argument.
2364 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared));
2365 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC));
2367 // Filter all the arguments we don't care passing to the offloading
2368 // toolchain as they can mess up with the creation of a shared library.
2369 for (auto *A : Args) {
2370 switch ((options::ID)A->getOption().getID()) {
2374 case options::OPT_shared:
2375 case options::OPT_dynamic:
2376 case options::OPT_static:
2377 case options::OPT_fPIC:
2378 case options::OPT_fno_PIC:
2379 case options::OPT_fpic:
2380 case options::OPT_fno_pic:
2381 case options::OPT_fPIE:
2382 case options::OPT_fno_PIE:
2383 case options::OPT_fpie:
2384 case options::OPT_fno_pie:
2393 void Generic_ELF::anchor() {}
2395 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
2396 ArgStringList &CC1Args) const {
2397 const Generic_GCC::GCCVersion &V = GCCInstallation.getVersion();
2398 bool UseInitArrayDefault =
2399 getTriple().getArch() == llvm::Triple::aarch64 ||
2400 getTriple().getArch() == llvm::Triple::aarch64_be ||
2401 (getTriple().getOS() == llvm::Triple::Linux &&
2402 (!V.isOlderThan(4, 7, 0) || getTriple().isAndroid())) ||
2403 getTriple().getOS() == llvm::Triple::NaCl ||
2404 (getTriple().getVendor() == llvm::Triple::MipsTechnologies &&
2405 !getTriple().hasEnvironment());
2407 if (DriverArgs.hasFlag(options::OPT_fuse_init_array,
2408 options::OPT_fno_use_init_array, UseInitArrayDefault))
2409 CC1Args.push_back("-fuse-init-array");