1 //===--- Gnu.cpp - Gnu Tool and ToolChain Implementations -------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 #include "Gnu.h"
10 #include "Arch/ARM.h"
11 #include "Arch/CSKY.h"
12 #include "Arch/LoongArch.h"
13 #include "Arch/Mips.h"
14 #include "Arch/PPC.h"
15 #include "Arch/RISCV.h"
16 #include "Arch/Sparc.h"
17 #include "Arch/SystemZ.h"
18 #include "CommonArgs.h"
19 #include "Linux.h"
20 #include "clang/Config/config.h" // for GCC_INSTALL_PREFIX
21 #include "clang/Driver/Compilation.h"
22 #include "clang/Driver/Driver.h"
23 #include "clang/Driver/DriverDiagnostic.h"
24 #include "clang/Driver/MultilibBuilder.h"
25 #include "clang/Driver/Options.h"
26 #include "clang/Driver/Tool.h"
27 #include "clang/Driver/ToolChain.h"
28 #include "llvm/ADT/StringSet.h"
29 #include "llvm/ADT/Twine.h"
30 #include "llvm/Option/ArgList.h"
31 #include "llvm/Support/CodeGen.h"
32 #include "llvm/Support/Path.h"
33 #include "llvm/Support/RISCVISAInfo.h"
34 #include "llvm/Support/VirtualFileSystem.h"
35 #include "llvm/TargetParser/TargetParser.h"
36 #include <system_error>
37
38 using namespace clang::driver;
39 using namespace clang::driver::toolchains;
40 using namespace clang;
41 using namespace llvm::opt;
42
43 using tools::addMultilibFlag;
44 using tools::addPathIfExists;
45
forwardToGCC(const Option & O)46 static bool forwardToGCC(const Option &O) {
47 // LinkerInput options have been forwarded. Don't duplicate.
48 if (O.hasFlag(options::LinkerInput))
49 return false;
50 return O.matches(options::OPT_Link_Group) || O.hasFlag(options::LinkOption);
51 }
52
53 // Switch CPU names not recognized by GNU assembler to a close CPU that it does
54 // recognize, instead of a lower march from being picked in the absence of a cpu
55 // flag.
normalizeCPUNamesForAssembler(const ArgList & Args,ArgStringList & CmdArgs)56 static void normalizeCPUNamesForAssembler(const ArgList &Args,
57 ArgStringList &CmdArgs) {
58 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
59 StringRef CPUArg(A->getValue());
60 if (CPUArg.equals_insensitive("krait"))
61 CmdArgs.push_back("-mcpu=cortex-a15");
62 else if (CPUArg.equals_insensitive("kryo"))
63 CmdArgs.push_back("-mcpu=cortex-a57");
64 else
65 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
66 }
67 }
68
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const69 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA,
70 const InputInfo &Output,
71 const InputInfoList &Inputs,
72 const ArgList &Args,
73 const char *LinkingOutput) const {
74 const Driver &D = getToolChain().getDriver();
75 ArgStringList CmdArgs;
76
77 for (const auto &A : Args) {
78 if (forwardToGCC(A->getOption())) {
79 // It is unfortunate that we have to claim here, as this means
80 // we will basically never report anything interesting for
81 // platforms using a generic gcc, even if we are just using gcc
82 // to get to the assembler.
83 A->claim();
84
85 A->render(Args, CmdArgs);
86 }
87 }
88
89 RenderExtraToolArgs(JA, CmdArgs);
90
91 // If using a driver, force the arch.
92 if (getToolChain().getTriple().isOSDarwin()) {
93 CmdArgs.push_back("-arch");
94 CmdArgs.push_back(
95 Args.MakeArgString(getToolChain().getDefaultUniversalArchName()));
96 }
97
98 // Try to force gcc to match the tool chain we want, if we recognize
99 // the arch.
100 //
101 // FIXME: The triple class should directly provide the information we want
102 // here.
103 switch (getToolChain().getArch()) {
104 default:
105 break;
106 case llvm::Triple::x86:
107 case llvm::Triple::ppc:
108 case llvm::Triple::ppcle:
109 CmdArgs.push_back("-m32");
110 break;
111 case llvm::Triple::x86_64:
112 case llvm::Triple::ppc64:
113 case llvm::Triple::ppc64le:
114 CmdArgs.push_back("-m64");
115 break;
116 case llvm::Triple::sparcel:
117 CmdArgs.push_back("-EL");
118 break;
119 }
120
121 assert((Output.isFilename() || Output.isNothing()) && "Invalid output.");
122 if (Output.isFilename()) {
123 CmdArgs.push_back("-o");
124 CmdArgs.push_back(Output.getFilename());
125 } else {
126 CmdArgs.push_back("-fsyntax-only");
127 }
128
129 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
130
131 // Only pass -x if gcc will understand it; otherwise hope gcc
132 // understands the suffix correctly. The main use case this would go
133 // wrong in is for linker inputs if they happened to have an odd
134 // suffix; really the only way to get this to happen is a command
135 // like '-x foobar a.c' which will treat a.c like a linker input.
136 //
137 // FIXME: For the linker case specifically, can we safely convert
138 // inputs into '-Wl,' options?
139 for (const auto &II : Inputs) {
140 // Don't try to pass LLVM or AST inputs to a generic gcc.
141 if (types::isLLVMIR(II.getType()))
142 D.Diag(clang::diag::err_drv_no_linker_llvm_support)
143 << getToolChain().getTripleString();
144 else if (II.getType() == types::TY_AST)
145 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString();
146 else if (II.getType() == types::TY_ModuleFile)
147 D.Diag(diag::err_drv_no_module_support)
148 << getToolChain().getTripleString();
149
150 if (types::canTypeBeUserSpecified(II.getType())) {
151 CmdArgs.push_back("-x");
152 CmdArgs.push_back(types::getTypeName(II.getType()));
153 }
154
155 if (II.isFilename())
156 CmdArgs.push_back(II.getFilename());
157 else {
158 const Arg &A = II.getInputArg();
159
160 // Reverse translate some rewritten options.
161 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) {
162 CmdArgs.push_back("-lstdc++");
163 continue;
164 }
165
166 // Don't render as input, we need gcc to do the translations.
167 A.render(Args, CmdArgs);
168 }
169 }
170
171 const std::string &customGCCName = D.getCCCGenericGCCName();
172 const char *GCCName;
173 if (!customGCCName.empty())
174 GCCName = customGCCName.c_str();
175 else if (D.CCCIsCXX()) {
176 GCCName = "g++";
177 } else
178 GCCName = "gcc";
179
180 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
181 C.addCommand(std::make_unique<Command>(JA, *this,
182 ResponseFileSupport::AtFileCurCP(),
183 Exec, CmdArgs, Inputs, Output));
184 }
185
RenderExtraToolArgs(const JobAction & JA,ArgStringList & CmdArgs) const186 void tools::gcc::Preprocessor::RenderExtraToolArgs(
187 const JobAction &JA, ArgStringList &CmdArgs) const {
188 CmdArgs.push_back("-E");
189 }
190
RenderExtraToolArgs(const JobAction & JA,ArgStringList & CmdArgs) const191 void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA,
192 ArgStringList &CmdArgs) const {
193 const Driver &D = getToolChain().getDriver();
194
195 switch (JA.getType()) {
196 // If -flto, etc. are present then make sure not to force assembly output.
197 case types::TY_LLVM_IR:
198 case types::TY_LTO_IR:
199 case types::TY_LLVM_BC:
200 case types::TY_LTO_BC:
201 CmdArgs.push_back("-c");
202 break;
203 // We assume we've got an "integrated" assembler in that gcc will produce an
204 // object file itself.
205 case types::TY_Object:
206 CmdArgs.push_back("-c");
207 break;
208 case types::TY_PP_Asm:
209 CmdArgs.push_back("-S");
210 break;
211 case types::TY_Nothing:
212 CmdArgs.push_back("-fsyntax-only");
213 break;
214 default:
215 D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType());
216 }
217 }
218
RenderExtraToolArgs(const JobAction & JA,ArgStringList & CmdArgs) const219 void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA,
220 ArgStringList &CmdArgs) const {
221 // The types are (hopefully) good enough.
222 }
223
getLDMOption(const llvm::Triple & T,const ArgList & Args)224 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) {
225 switch (T.getArch()) {
226 case llvm::Triple::x86:
227 if (T.isOSIAMCU())
228 return "elf_iamcu";
229 return "elf_i386";
230 case llvm::Triple::aarch64:
231 return "aarch64linux";
232 case llvm::Triple::aarch64_be:
233 return "aarch64linuxb";
234 case llvm::Triple::arm:
235 case llvm::Triple::thumb:
236 case llvm::Triple::armeb:
237 case llvm::Triple::thumbeb:
238 return tools::arm::isARMBigEndian(T, Args) ? "armelfb_linux_eabi"
239 : "armelf_linux_eabi";
240 case llvm::Triple::m68k:
241 return "m68kelf";
242 case llvm::Triple::ppc:
243 if (T.isOSLinux())
244 return "elf32ppclinux";
245 return "elf32ppc";
246 case llvm::Triple::ppcle:
247 if (T.isOSLinux())
248 return "elf32lppclinux";
249 return "elf32lppc";
250 case llvm::Triple::ppc64:
251 return "elf64ppc";
252 case llvm::Triple::ppc64le:
253 return "elf64lppc";
254 case llvm::Triple::riscv32:
255 return "elf32lriscv";
256 case llvm::Triple::riscv64:
257 return "elf64lriscv";
258 case llvm::Triple::sparc:
259 case llvm::Triple::sparcel:
260 return "elf32_sparc";
261 case llvm::Triple::sparcv9:
262 return "elf64_sparc";
263 case llvm::Triple::loongarch32:
264 return "elf32loongarch";
265 case llvm::Triple::loongarch64:
266 return "elf64loongarch";
267 case llvm::Triple::mips:
268 return "elf32btsmip";
269 case llvm::Triple::mipsel:
270 return "elf32ltsmip";
271 case llvm::Triple::mips64:
272 if (tools::mips::hasMipsAbiArg(Args, "n32") ||
273 T.getEnvironment() == llvm::Triple::GNUABIN32)
274 return "elf32btsmipn32";
275 return "elf64btsmip";
276 case llvm::Triple::mips64el:
277 if (tools::mips::hasMipsAbiArg(Args, "n32") ||
278 T.getEnvironment() == llvm::Triple::GNUABIN32)
279 return "elf32ltsmipn32";
280 return "elf64ltsmip";
281 case llvm::Triple::systemz:
282 return "elf64_s390";
283 case llvm::Triple::x86_64:
284 if (T.isX32())
285 return "elf32_x86_64";
286 return "elf_x86_64";
287 case llvm::Triple::ve:
288 return "elf64ve";
289 case llvm::Triple::csky:
290 return "cskyelf_linux";
291 default:
292 return nullptr;
293 }
294 }
295
getStaticPIE(const ArgList & Args,const ToolChain & TC)296 static bool getStaticPIE(const ArgList &Args, const ToolChain &TC) {
297 bool HasStaticPIE = Args.hasArg(options::OPT_static_pie);
298 if (HasStaticPIE && Args.hasArg(options::OPT_no_pie)) {
299 const Driver &D = TC.getDriver();
300 const llvm::opt::OptTable &Opts = D.getOpts();
301 StringRef StaticPIEName = Opts.getOptionName(options::OPT_static_pie);
302 StringRef NoPIEName = Opts.getOptionName(options::OPT_nopie);
303 D.Diag(diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName;
304 }
305 return HasStaticPIE;
306 }
307
getStatic(const ArgList & Args)308 static bool getStatic(const ArgList &Args) {
309 return Args.hasArg(options::OPT_static) &&
310 !Args.hasArg(options::OPT_static_pie);
311 }
312
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const313 void tools::gnutools::StaticLibTool::ConstructJob(
314 Compilation &C, const JobAction &JA, const InputInfo &Output,
315 const InputInfoList &Inputs, const ArgList &Args,
316 const char *LinkingOutput) const {
317 const Driver &D = getToolChain().getDriver();
318
319 // Silence warning for "clang -g foo.o -o foo"
320 Args.ClaimAllArgs(options::OPT_g_Group);
321 // and "clang -emit-llvm foo.o -o foo"
322 Args.ClaimAllArgs(options::OPT_emit_llvm);
323 // and for "clang -w foo.o -o foo". Other warning options are already
324 // handled somewhere else.
325 Args.ClaimAllArgs(options::OPT_w);
326 // Silence warnings when linking C code with a C++ '-stdlib' argument.
327 Args.ClaimAllArgs(options::OPT_stdlib_EQ);
328
329 // ar tool command "llvm-ar <options> <output_file> <input_files>".
330 ArgStringList CmdArgs;
331 // Create and insert file members with a deterministic index.
332 CmdArgs.push_back("rcsD");
333 CmdArgs.push_back(Output.getFilename());
334
335 for (const auto &II : Inputs) {
336 if (II.isFilename()) {
337 CmdArgs.push_back(II.getFilename());
338 }
339 }
340
341 // Delete old output archive file if it already exists before generating a new
342 // archive file.
343 auto OutputFileName = Output.getFilename();
344 if (Output.isFilename() && llvm::sys::fs::exists(OutputFileName)) {
345 if (std::error_code EC = llvm::sys::fs::remove(OutputFileName)) {
346 D.Diag(diag::err_drv_unable_to_remove_file) << EC.message();
347 return;
348 }
349 }
350
351 const char *Exec = Args.MakeArgString(getToolChain().GetStaticLibToolPath());
352 C.addCommand(std::make_unique<Command>(JA, *this,
353 ResponseFileSupport::AtFileCurCP(),
354 Exec, CmdArgs, Inputs, Output));
355 }
356
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const357 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
358 const InputInfo &Output,
359 const InputInfoList &Inputs,
360 const ArgList &Args,
361 const char *LinkingOutput) const {
362 // FIXME: The Linker class constructor takes a ToolChain and not a
363 // Generic_ELF, so the static_cast might return a reference to a invalid
364 // instance (see PR45061). Ideally, the Linker constructor needs to take a
365 // Generic_ELF instead.
366 const auto &ToolChain = static_cast<const Generic_ELF &>(getToolChain());
367 const Driver &D = ToolChain.getDriver();
368
369 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
370
371 const llvm::Triple::ArchType Arch = ToolChain.getArch();
372 const bool isOHOSFamily = ToolChain.getTriple().isOHOSFamily();
373 const bool isAndroid = ToolChain.getTriple().isAndroid();
374 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
375 const bool IsVE = ToolChain.getTriple().isVE();
376 const bool IsStaticPIE = getStaticPIE(Args, ToolChain);
377 const bool IsStatic = getStatic(Args);
378 const bool HasCRTBeginEndFiles =
379 ToolChain.getTriple().hasEnvironment() ||
380 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
381
382 ArgStringList CmdArgs;
383
384 // Silence warning for "clang -g foo.o -o foo"
385 Args.ClaimAllArgs(options::OPT_g_Group);
386 // and "clang -emit-llvm foo.o -o foo"
387 Args.ClaimAllArgs(options::OPT_emit_llvm);
388 // and for "clang -w foo.o -o foo". Other warning options are already
389 // handled somewhere else.
390 Args.ClaimAllArgs(options::OPT_w);
391
392 if (!D.SysRoot.empty())
393 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
394
395 if (Args.hasArg(options::OPT_s))
396 CmdArgs.push_back("-s");
397
398 if (Triple.isARM() || Triple.isThumb()) {
399 bool IsBigEndian = arm::isARMBigEndian(Triple, Args);
400 if (IsBigEndian)
401 arm::appendBE8LinkFlag(Args, CmdArgs, Triple);
402 CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL");
403 } else if (Triple.isAArch64()) {
404 CmdArgs.push_back(Arch == llvm::Triple::aarch64_be ? "-EB" : "-EL");
405 }
406
407 // Most Android ARM64 targets should enable the linker fix for erratum
408 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
409 if (Arch == llvm::Triple::aarch64 && (isAndroid || isOHOSFamily)) {
410 std::string CPU = getCPUName(D, Args, Triple);
411 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
412 CmdArgs.push_back("--fix-cortex-a53-843419");
413 }
414
415 ToolChain.addExtraOpts(CmdArgs);
416
417 CmdArgs.push_back("--eh-frame-hdr");
418
419 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) {
420 CmdArgs.push_back("-m");
421 CmdArgs.push_back(LDMOption);
422 } else {
423 D.Diag(diag::err_target_unknown_triple) << Triple.str();
424 return;
425 }
426 if (Triple.isRISCV())
427 CmdArgs.push_back("-X");
428
429 const bool IsShared = Args.hasArg(options::OPT_shared);
430 if (IsShared)
431 CmdArgs.push_back("-shared");
432 bool IsPIE = false;
433 if (IsStaticPIE) {
434 CmdArgs.push_back("-static");
435 CmdArgs.push_back("-pie");
436 CmdArgs.push_back("--no-dynamic-linker");
437 CmdArgs.push_back("-z");
438 CmdArgs.push_back("text");
439 } else if (IsStatic) {
440 CmdArgs.push_back("-static");
441 } else if (!Args.hasArg(options::OPT_r)) {
442 if (Args.hasArg(options::OPT_rdynamic))
443 CmdArgs.push_back("-export-dynamic");
444 if (!IsShared) {
445 IsPIE = Args.hasFlag(options::OPT_pie, options::OPT_no_pie,
446 ToolChain.isPIEDefault(Args));
447 if (IsPIE)
448 CmdArgs.push_back("-pie");
449 CmdArgs.push_back("-dynamic-linker");
450 CmdArgs.push_back(Args.MakeArgString(Twine(D.DyldPrefix) +
451 ToolChain.getDynamicLinker(Args)));
452 }
453 }
454
455 CmdArgs.push_back("-o");
456 CmdArgs.push_back(Output.getFilename());
457
458 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
459 options::OPT_r)) {
460 if (!isAndroid && !IsIAMCU) {
461 const char *crt1 = nullptr;
462 if (!Args.hasArg(options::OPT_shared)) {
463 if (Args.hasArg(options::OPT_pg))
464 crt1 = "gcrt1.o";
465 else if (IsPIE)
466 crt1 = "Scrt1.o";
467 else if (IsStaticPIE)
468 crt1 = "rcrt1.o";
469 else
470 crt1 = "crt1.o";
471 }
472 if (crt1)
473 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
474
475 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
476 }
477
478 if (IsVE) {
479 CmdArgs.push_back("-z");
480 CmdArgs.push_back("max-page-size=0x4000000");
481 }
482
483 if (IsIAMCU)
484 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
485 else if (HasCRTBeginEndFiles) {
486 std::string P;
487 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
488 !isAndroid) {
489 std::string crtbegin = ToolChain.getCompilerRT(Args, "crtbegin",
490 ToolChain::FT_Object);
491 if (ToolChain.getVFS().exists(crtbegin))
492 P = crtbegin;
493 }
494 if (P.empty()) {
495 const char *crtbegin;
496 if (Args.hasArg(options::OPT_shared))
497 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
498 else if (IsStatic)
499 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
500 else if (IsPIE || IsStaticPIE)
501 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
502 else
503 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
504 P = ToolChain.GetFilePath(crtbegin);
505 }
506 CmdArgs.push_back(Args.MakeArgString(P));
507 }
508
509 // Add crtfastmath.o if available and fast math is enabled.
510 ToolChain.addFastMathRuntimeIfAvailable(Args, CmdArgs);
511
512 if (isAndroid && Args.hasFlag(options::OPT_fandroid_pad_segment,
513 options::OPT_fno_android_pad_segment, false))
514 CmdArgs.push_back(
515 Args.MakeArgString(ToolChain.GetFilePath("crt_pad_segment.o")));
516 }
517
518 Args.addAllArgs(CmdArgs, {options::OPT_L, options::OPT_u});
519
520 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
521
522 if (D.isUsingLTO()) {
523 assert(!Inputs.empty() && "Must have at least one input.");
524 // Find the first filename InputInfo object.
525 auto Input = llvm::find_if(
526 Inputs, [](const InputInfo &II) -> bool { return II.isFilename(); });
527 if (Input == Inputs.end())
528 // For a very rare case, all of the inputs to the linker are
529 // InputArg. If that happens, just use the first InputInfo.
530 Input = Inputs.begin();
531
532 addLTOOptions(ToolChain, Args, CmdArgs, Output, *Input,
533 D.getLTOMode() == LTOK_Thin);
534 }
535
536 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
537 CmdArgs.push_back("--no-demangle");
538
539 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
540 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
541 addLinkerCompressDebugSectionsOption(ToolChain, Args, CmdArgs);
542 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
543
544 addHIPRuntimeLibArgs(ToolChain, C, Args, CmdArgs);
545
546 // The profile runtime also needs access to system libraries.
547 getToolChain().addProfileRTLibs(Args, CmdArgs);
548
549 if (D.CCCIsCXX() &&
550 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,
551 options::OPT_r)) {
552 if (ToolChain.ShouldLinkCXXStdlib(Args)) {
553 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
554 !Args.hasArg(options::OPT_static);
555 if (OnlyLibstdcxxStatic)
556 CmdArgs.push_back("-Bstatic");
557 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
558 if (OnlyLibstdcxxStatic)
559 CmdArgs.push_back("-Bdynamic");
560 }
561 CmdArgs.push_back("-lm");
562 }
563
564 // Silence warnings when linking C code with a C++ '-stdlib' argument.
565 Args.ClaimAllArgs(options::OPT_stdlib_EQ);
566
567 // Additional linker set-up and flags for Fortran. This is required in order
568 // to generate executables. As Fortran runtime depends on the C runtime,
569 // these dependencies need to be listed before the C runtime below (i.e.
570 // AddRunTimeLibs).
571 if (D.IsFlangMode()) {
572 addFortranRuntimeLibraryPath(ToolChain, Args, CmdArgs);
573 addFortranRuntimeLibs(ToolChain, Args, CmdArgs);
574 CmdArgs.push_back("-lm");
575 }
576
577 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_r)) {
578 if (!Args.hasArg(options::OPT_nodefaultlibs)) {
579 if (IsStatic || IsStaticPIE)
580 CmdArgs.push_back("--start-group");
581
582 if (NeedsSanitizerDeps)
583 linkSanitizerRuntimeDeps(ToolChain, Args, CmdArgs);
584
585 if (NeedsXRayDeps)
586 linkXRayRuntimeDeps(ToolChain, Args, CmdArgs);
587
588 bool WantPthread = Args.hasArg(options::OPT_pthread) ||
589 Args.hasArg(options::OPT_pthreads);
590
591 // Use the static OpenMP runtime with -static-openmp
592 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) &&
593 !Args.hasArg(options::OPT_static);
594
595 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
596 // require librt. Most modern Linux platforms do, but some may not.
597 if (addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP,
598 JA.isHostOffloading(Action::OFK_OpenMP),
599 /* GompNeedsRT= */ true))
600 // OpenMP runtimes implies pthreads when using the GNU toolchain.
601 // FIXME: Does this really make sense for all GNU toolchains?
602 WantPthread = true;
603
604 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
605
606 // LLVM support for atomics on 32-bit SPARC V8+ is incomplete, so
607 // forcibly link with libatomic as a workaround.
608 // TODO: Issue #41880 and D118021.
609 if (getToolChain().getTriple().getArch() == llvm::Triple::sparc) {
610 CmdArgs.push_back("--push-state");
611 CmdArgs.push_back("--as-needed");
612 CmdArgs.push_back("-latomic");
613 CmdArgs.push_back("--pop-state");
614 }
615
616 // We don't need libpthread neither for bionic (Android) nor for musl,
617 // (used by OHOS as runtime library).
618 if (WantPthread && !isAndroid && !isOHOSFamily)
619 CmdArgs.push_back("-lpthread");
620
621 if (Args.hasArg(options::OPT_fsplit_stack))
622 CmdArgs.push_back("--wrap=pthread_create");
623
624 if (!Args.hasArg(options::OPT_nolibc))
625 CmdArgs.push_back("-lc");
626
627 // Add IAMCU specific libs, if needed.
628 if (IsIAMCU)
629 CmdArgs.push_back("-lgloss");
630
631 if (IsStatic || IsStaticPIE)
632 CmdArgs.push_back("--end-group");
633 else
634 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
635
636 // Add IAMCU specific libs (outside the group), if needed.
637 if (IsIAMCU) {
638 CmdArgs.push_back("--as-needed");
639 CmdArgs.push_back("-lsoftfp");
640 CmdArgs.push_back("--no-as-needed");
641 }
642 }
643
644 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) {
645 if (HasCRTBeginEndFiles) {
646 std::string P;
647 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
648 !isAndroid) {
649 std::string crtend = ToolChain.getCompilerRT(Args, "crtend",
650 ToolChain::FT_Object);
651 if (ToolChain.getVFS().exists(crtend))
652 P = crtend;
653 }
654 if (P.empty()) {
655 const char *crtend;
656 if (Args.hasArg(options::OPT_shared))
657 crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
658 else if (IsPIE || IsStaticPIE)
659 crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
660 else
661 crtend = isAndroid ? "crtend_android.o" : "crtend.o";
662 P = ToolChain.GetFilePath(crtend);
663 }
664 CmdArgs.push_back(Args.MakeArgString(P));
665 }
666 if (!isAndroid)
667 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
668 }
669 }
670
671 Args.AddAllArgs(CmdArgs, options::OPT_T);
672
673 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
674 C.addCommand(std::make_unique<Command>(JA, *this,
675 ResponseFileSupport::AtFileCurCP(),
676 Exec, CmdArgs, Inputs, Output));
677 }
678
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const679 void tools::gnutools::Assembler::ConstructJob(Compilation &C,
680 const JobAction &JA,
681 const InputInfo &Output,
682 const InputInfoList &Inputs,
683 const ArgList &Args,
684 const char *LinkingOutput) const {
685 const auto &D = getToolChain().getDriver();
686
687 claimNoWarnArgs(Args);
688
689 ArgStringList CmdArgs;
690
691 llvm::Reloc::Model RelocationModel;
692 unsigned PICLevel;
693 bool IsPIE;
694 const char *DefaultAssembler = "as";
695 // Enforce GNU as on Solaris; the native assembler's input syntax isn't fully
696 // compatible.
697 if (getToolChain().getTriple().isOSSolaris())
698 DefaultAssembler = "gas";
699 std::tie(RelocationModel, PICLevel, IsPIE) =
700 ParsePICArgs(getToolChain(), Args);
701
702 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) {
703 if (A->getOption().getID() == options::OPT_gz) {
704 CmdArgs.push_back("--compress-debug-sections");
705 } else {
706 StringRef Value = A->getValue();
707 if (Value == "none" || Value == "zlib" || Value == "zstd") {
708 CmdArgs.push_back(
709 Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
710 } else {
711 D.Diag(diag::err_drv_unsupported_option_argument)
712 << A->getSpelling() << Value;
713 }
714 }
715 }
716
717 switch (getToolChain().getArch()) {
718 default:
719 break;
720 // Add --32/--64 to make sure we get the format we want.
721 // This is incomplete
722 case llvm::Triple::x86:
723 CmdArgs.push_back("--32");
724 break;
725 case llvm::Triple::x86_64:
726 if (getToolChain().getTriple().isX32())
727 CmdArgs.push_back("--x32");
728 else
729 CmdArgs.push_back("--64");
730 break;
731 case llvm::Triple::ppc: {
732 CmdArgs.push_back("-a32");
733 CmdArgs.push_back("-mppc");
734 CmdArgs.push_back("-mbig-endian");
735 CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
736 getCPUName(D, Args, getToolChain().getTriple())));
737 break;
738 }
739 case llvm::Triple::ppcle: {
740 CmdArgs.push_back("-a32");
741 CmdArgs.push_back("-mppc");
742 CmdArgs.push_back("-mlittle-endian");
743 CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
744 getCPUName(D, Args, getToolChain().getTriple())));
745 break;
746 }
747 case llvm::Triple::ppc64: {
748 CmdArgs.push_back("-a64");
749 CmdArgs.push_back("-mppc64");
750 CmdArgs.push_back("-mbig-endian");
751 CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
752 getCPUName(D, Args, getToolChain().getTriple())));
753 break;
754 }
755 case llvm::Triple::ppc64le: {
756 CmdArgs.push_back("-a64");
757 CmdArgs.push_back("-mppc64");
758 CmdArgs.push_back("-mlittle-endian");
759 CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
760 getCPUName(D, Args, getToolChain().getTriple())));
761 break;
762 }
763 case llvm::Triple::riscv32:
764 case llvm::Triple::riscv64: {
765 StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple());
766 CmdArgs.push_back("-mabi");
767 CmdArgs.push_back(ABIName.data());
768 StringRef MArchName = riscv::getRISCVArch(Args, getToolChain().getTriple());
769 CmdArgs.push_back("-march");
770 CmdArgs.push_back(MArchName.data());
771 if (!Args.hasFlag(options::OPT_mrelax, options::OPT_mno_relax, true))
772 Args.addOptOutFlag(CmdArgs, options::OPT_mrelax, options::OPT_mno_relax);
773 break;
774 }
775 case llvm::Triple::sparc:
776 case llvm::Triple::sparcel: {
777 CmdArgs.push_back("-32");
778 std::string CPU = getCPUName(D, Args, getToolChain().getTriple());
779 CmdArgs.push_back(
780 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
781 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
782 break;
783 }
784 case llvm::Triple::sparcv9: {
785 CmdArgs.push_back("-64");
786 std::string CPU = getCPUName(D, Args, getToolChain().getTriple());
787 CmdArgs.push_back(
788 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
789 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
790 break;
791 }
792 case llvm::Triple::arm:
793 case llvm::Triple::armeb:
794 case llvm::Triple::thumb:
795 case llvm::Triple::thumbeb: {
796 const llvm::Triple &Triple2 = getToolChain().getTriple();
797 CmdArgs.push_back(arm::isARMBigEndian(Triple2, Args) ? "-EB" : "-EL");
798 switch (Triple2.getSubArch()) {
799 case llvm::Triple::ARMSubArch_v7:
800 CmdArgs.push_back("-mfpu=neon");
801 break;
802 case llvm::Triple::ARMSubArch_v8:
803 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8");
804 break;
805 default:
806 break;
807 }
808
809 switch (arm::getARMFloatABI(getToolChain(), Args)) {
810 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
811 case arm::FloatABI::Soft:
812 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft"));
813 break;
814 case arm::FloatABI::SoftFP:
815 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp"));
816 break;
817 case arm::FloatABI::Hard:
818 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard"));
819 break;
820 }
821
822 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
823 normalizeCPUNamesForAssembler(Args, CmdArgs);
824
825 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ);
826 // The integrated assembler doesn't implement e_flags setting behavior for
827 // -meabi=gnu (gcc -mabi={apcs-gnu,atpcs} passes -meabi=gnu to gas). For
828 // compatibility we accept but warn.
829 if (Arg *A = Args.getLastArgNoClaim(options::OPT_mabi_EQ))
830 A->ignoreTargetSpecific();
831 break;
832 }
833 case llvm::Triple::aarch64:
834 case llvm::Triple::aarch64_be: {
835 CmdArgs.push_back(
836 getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL");
837 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
838 normalizeCPUNamesForAssembler(Args, CmdArgs);
839
840 break;
841 }
842 // TODO: handle loongarch32.
843 case llvm::Triple::loongarch64: {
844 StringRef ABIName =
845 loongarch::getLoongArchABI(D, Args, getToolChain().getTriple());
846 CmdArgs.push_back(Args.MakeArgString("-mabi=" + ABIName));
847 break;
848 }
849 case llvm::Triple::mips:
850 case llvm::Triple::mipsel:
851 case llvm::Triple::mips64:
852 case llvm::Triple::mips64el: {
853 StringRef CPUName;
854 StringRef ABIName;
855 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
856 ABIName = mips::getGnuCompatibleMipsABIName(ABIName);
857
858 CmdArgs.push_back("-march");
859 CmdArgs.push_back(CPUName.data());
860
861 CmdArgs.push_back("-mabi");
862 CmdArgs.push_back(ABIName.data());
863
864 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
865 // or -mshared (not implemented) is in effect.
866 if (RelocationModel == llvm::Reloc::Static)
867 CmdArgs.push_back("-mno-shared");
868
869 // LLVM doesn't support -mplt yet and acts as if it is always given.
870 // However, -mplt has no effect with the N64 ABI.
871 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls))
872 CmdArgs.push_back("-call_nonpic");
873
874 if (getToolChain().getTriple().isLittleEndian())
875 CmdArgs.push_back("-EL");
876 else
877 CmdArgs.push_back("-EB");
878
879 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) {
880 if (StringRef(A->getValue()) == "2008")
881 CmdArgs.push_back(Args.MakeArgString("-mnan=2008"));
882 }
883
884 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
885 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx,
886 options::OPT_mfp64)) {
887 A->claim();
888 A->render(Args, CmdArgs);
889 } else if (mips::shouldUseFPXX(
890 Args, getToolChain().getTriple(), CPUName, ABIName,
891 mips::getMipsFloatABI(getToolChain().getDriver(), Args,
892 getToolChain().getTriple())))
893 CmdArgs.push_back("-mfpxx");
894
895 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
896 // -mno-mips16 is actually -no-mips16.
897 if (Arg *A =
898 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) {
899 if (A->getOption().matches(options::OPT_mips16)) {
900 A->claim();
901 A->render(Args, CmdArgs);
902 } else {
903 A->claim();
904 CmdArgs.push_back("-no-mips16");
905 }
906 }
907
908 Args.AddLastArg(CmdArgs, options::OPT_mmicromips,
909 options::OPT_mno_micromips);
910 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp);
911 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2);
912
913 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) {
914 // Do not use AddLastArg because not all versions of MIPS assembler
915 // support -mmsa / -mno-msa options.
916 if (A->getOption().matches(options::OPT_mmsa))
917 CmdArgs.push_back(Args.MakeArgString("-mmsa"));
918 }
919
920 Args.AddLastArg(CmdArgs, options::OPT_mhard_float,
921 options::OPT_msoft_float);
922
923 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float,
924 options::OPT_msingle_float);
925
926 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg,
927 options::OPT_mno_odd_spreg);
928
929 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
930 break;
931 }
932 case llvm::Triple::systemz: {
933 // Always pass an -march option, since our default of z10 is later
934 // than the GNU assembler's default.
935 std::string CPUName = systemz::getSystemZTargetCPU(Args);
936 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName));
937 break;
938 }
939 case llvm::Triple::ve:
940 DefaultAssembler = "nas";
941 }
942
943 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
944 options::OPT_fdebug_prefix_map_EQ)) {
945 StringRef Map = A->getValue();
946 if (!Map.contains('='))
947 D.Diag(diag::err_drv_invalid_argument_to_option)
948 << Map << A->getOption().getName();
949 else {
950 CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map"));
951 CmdArgs.push_back(Args.MakeArgString(Map));
952 }
953 A->claim();
954 }
955
956 Args.AddAllArgs(CmdArgs, options::OPT_I);
957 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
958
959 CmdArgs.push_back("-o");
960 CmdArgs.push_back(Output.getFilename());
961
962 for (const auto &II : Inputs)
963 CmdArgs.push_back(II.getFilename());
964
965 if (Arg *A = Args.getLastArg(options::OPT_g_Flag, options::OPT_gN_Group,
966 options::OPT_gdwarf_2, options::OPT_gdwarf_3,
967 options::OPT_gdwarf_4, options::OPT_gdwarf_5,
968 options::OPT_gdwarf))
969 if (!A->getOption().matches(options::OPT_g0)) {
970 Args.AddLastArg(CmdArgs, options::OPT_g_Flag);
971
972 unsigned DwarfVersion = getDwarfVersion(getToolChain(), Args);
973 CmdArgs.push_back(Args.MakeArgString("-gdwarf-" + Twine(DwarfVersion)));
974 }
975
976 const char *Exec =
977 Args.MakeArgString(getToolChain().GetProgramPath(DefaultAssembler));
978 C.addCommand(std::make_unique<Command>(JA, *this,
979 ResponseFileSupport::AtFileCurCP(),
980 Exec, CmdArgs, Inputs, Output));
981
982 // Handle the debug info splitting at object creation time if we're
983 // creating an object.
984 // TODO: Currently only works on linux with newer objcopy.
985 if (Args.hasArg(options::OPT_gsplit_dwarf) &&
986 getToolChain().getTriple().isOSLinux())
987 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
988 SplitDebugName(JA, Args, Inputs[0], Output));
989 }
990
991 namespace {
992 // Filter to remove Multilibs that don't exist as a suffix to Path
993 class FilterNonExistent {
994 StringRef Base, File;
995 llvm::vfs::FileSystem &VFS;
996
997 public:
FilterNonExistent(StringRef Base,StringRef File,llvm::vfs::FileSystem & VFS)998 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS)
999 : Base(Base), File(File), VFS(VFS) {}
operator ()(const Multilib & M)1000 bool operator()(const Multilib &M) {
1001 return !VFS.exists(Base + M.gccSuffix() + File);
1002 }
1003 };
1004 } // end anonymous namespace
1005
isSoftFloatABI(const ArgList & Args)1006 static bool isSoftFloatABI(const ArgList &Args) {
1007 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
1008 options::OPT_mfloat_abi_EQ);
1009 if (!A)
1010 return false;
1011
1012 return A->getOption().matches(options::OPT_msoft_float) ||
1013 (A->getOption().matches(options::OPT_mfloat_abi_EQ) &&
1014 A->getValue() == StringRef("soft"));
1015 }
1016
isArmOrThumbArch(llvm::Triple::ArchType Arch)1017 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
1018 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
1019 }
1020
isMipsEL(llvm::Triple::ArchType Arch)1021 static bool isMipsEL(llvm::Triple::ArchType Arch) {
1022 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
1023 }
1024
isMips16(const ArgList & Args)1025 static bool isMips16(const ArgList &Args) {
1026 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16);
1027 return A && A->getOption().matches(options::OPT_mips16);
1028 }
1029
isMicroMips(const ArgList & Args)1030 static bool isMicroMips(const ArgList &Args) {
1031 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips);
1032 return A && A->getOption().matches(options::OPT_mmicromips);
1033 }
1034
isMSP430(llvm::Triple::ArchType Arch)1035 static bool isMSP430(llvm::Triple::ArchType Arch) {
1036 return Arch == llvm::Triple::msp430;
1037 }
1038
findMipsCsMultilibs(const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)1039 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags,
1040 FilterNonExistent &NonExistent,
1041 DetectedMultilibs &Result) {
1042 // Check for Code Sourcery toolchain multilibs
1043 MultilibSet CSMipsMultilibs;
1044 {
1045 auto MArchMips16 = MultilibBuilder("/mips16").flag("-m32").flag("-mips16");
1046
1047 auto MArchMicroMips =
1048 MultilibBuilder("/micromips").flag("-m32").flag("-mmicromips");
1049
1050 auto MArchDefault = MultilibBuilder("")
1051 .flag("-mips16", /*Disallow=*/true)
1052 .flag("-mmicromips", /*Disallow=*/true);
1053
1054 auto UCLibc = MultilibBuilder("/uclibc").flag("-muclibc");
1055
1056 auto SoftFloat = MultilibBuilder("/soft-float").flag("-msoft-float");
1057
1058 auto Nan2008 = MultilibBuilder("/nan2008").flag("-mnan=2008");
1059
1060 auto DefaultFloat = MultilibBuilder("")
1061 .flag("-msoft-float", /*Disallow=*/true)
1062 .flag("-mnan=2008", /*Disallow=*/true);
1063
1064 auto BigEndian =
1065 MultilibBuilder("").flag("-EB").flag("-EL", /*Disallow=*/true);
1066
1067 auto LittleEndian =
1068 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true);
1069
1070 // Note that this one's osSuffix is ""
1071 auto MAbi64 = MultilibBuilder("")
1072 .gccSuffix("/64")
1073 .includeSuffix("/64")
1074 .flag("-mabi=n64")
1075 .flag("-mabi=n32", /*Disallow=*/true)
1076 .flag("-m32", /*Disallow=*/true);
1077
1078 CSMipsMultilibs =
1079 MultilibSetBuilder()
1080 .Either(MArchMips16, MArchMicroMips, MArchDefault)
1081 .Maybe(UCLibc)
1082 .Either(SoftFloat, Nan2008, DefaultFloat)
1083 .FilterOut("/micromips/nan2008")
1084 .FilterOut("/mips16/nan2008")
1085 .Either(BigEndian, LittleEndian)
1086 .Maybe(MAbi64)
1087 .FilterOut("/mips16.*/64")
1088 .FilterOut("/micromips.*/64")
1089 .makeMultilibSet()
1090 .FilterOut(NonExistent)
1091 .setIncludeDirsCallback([](const Multilib &M) {
1092 std::vector<std::string> Dirs({"/include"});
1093 if (StringRef(M.includeSuffix()).starts_with("/uclibc"))
1094 Dirs.push_back(
1095 "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
1096 else
1097 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include");
1098 return Dirs;
1099 });
1100 }
1101
1102 MultilibSet DebianMipsMultilibs;
1103 {
1104 MultilibBuilder MAbiN32 =
1105 MultilibBuilder().gccSuffix("/n32").includeSuffix("/n32").flag(
1106 "-mabi=n32");
1107
1108 MultilibBuilder M64 = MultilibBuilder()
1109 .gccSuffix("/64")
1110 .includeSuffix("/64")
1111 .flag("-m64")
1112 .flag("-m32", /*Disallow=*/true)
1113 .flag("-mabi=n32", /*Disallow=*/true);
1114
1115 MultilibBuilder M32 = MultilibBuilder()
1116 .gccSuffix("/32")
1117 .flag("-m64", /*Disallow=*/true)
1118 .flag("-m32")
1119 .flag("-mabi=n32", /*Disallow=*/true);
1120
1121 DebianMipsMultilibs = MultilibSetBuilder()
1122 .Either(M32, M64, MAbiN32)
1123 .makeMultilibSet()
1124 .FilterOut(NonExistent);
1125 }
1126
1127 // Sort candidates. Toolchain that best meets the directories tree goes first.
1128 // Then select the first toolchains matches command line flags.
1129 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
1130 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
1131 std::iter_swap(Candidates, Candidates + 1);
1132 for (const MultilibSet *Candidate : Candidates) {
1133 if (Candidate->select(Flags, Result.SelectedMultilibs)) {
1134 if (Candidate == &DebianMipsMultilibs)
1135 Result.BiarchSibling = Multilib();
1136 Result.Multilibs = *Candidate;
1137 return true;
1138 }
1139 }
1140 return false;
1141 }
1142
findMipsAndroidMultilibs(llvm::vfs::FileSystem & VFS,StringRef Path,const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)1143 static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path,
1144 const Multilib::flags_list &Flags,
1145 FilterNonExistent &NonExistent,
1146 DetectedMultilibs &Result) {
1147
1148 MultilibSet AndroidMipsMultilibs =
1149 MultilibSetBuilder()
1150 .Maybe(MultilibBuilder("/mips-r2", {}, {}).flag("-march=mips32r2"))
1151 .Maybe(MultilibBuilder("/mips-r6", {}, {}).flag("-march=mips32r6"))
1152 .makeMultilibSet()
1153 .FilterOut(NonExistent);
1154
1155 MultilibSet AndroidMipselMultilibs =
1156 MultilibSetBuilder()
1157 .Either(MultilibBuilder().flag("-march=mips32"),
1158 MultilibBuilder("/mips-r2", "", "/mips-r2")
1159 .flag("-march=mips32r2"),
1160 MultilibBuilder("/mips-r6", "", "/mips-r6")
1161 .flag("-march=mips32r6"))
1162 .makeMultilibSet()
1163 .FilterOut(NonExistent);
1164
1165 MultilibSet AndroidMips64elMultilibs =
1166 MultilibSetBuilder()
1167 .Either(MultilibBuilder().flag("-march=mips64r6"),
1168 MultilibBuilder("/32/mips-r1", "", "/mips-r1")
1169 .flag("-march=mips32"),
1170 MultilibBuilder("/32/mips-r2", "", "/mips-r2")
1171 .flag("-march=mips32r2"),
1172 MultilibBuilder("/32/mips-r6", "", "/mips-r6")
1173 .flag("-march=mips32r6"))
1174 .makeMultilibSet()
1175 .FilterOut(NonExistent);
1176
1177 MultilibSet *MS = &AndroidMipsMultilibs;
1178 if (VFS.exists(Path + "/mips-r6"))
1179 MS = &AndroidMipselMultilibs;
1180 else if (VFS.exists(Path + "/32"))
1181 MS = &AndroidMips64elMultilibs;
1182 if (MS->select(Flags, Result.SelectedMultilibs)) {
1183 Result.Multilibs = *MS;
1184 return true;
1185 }
1186 return false;
1187 }
1188
findMipsMuslMultilibs(const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)1189 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags,
1190 FilterNonExistent &NonExistent,
1191 DetectedMultilibs &Result) {
1192 // Musl toolchain multilibs
1193 MultilibSet MuslMipsMultilibs;
1194 {
1195 auto MArchMipsR2 = MultilibBuilder("")
1196 .osSuffix("/mips-r2-hard-musl")
1197 .flag("-EB")
1198 .flag("-EL", /*Disallow=*/true)
1199 .flag("-march=mips32r2");
1200
1201 auto MArchMipselR2 = MultilibBuilder("/mipsel-r2-hard-musl")
1202 .flag("-EB", /*Disallow=*/true)
1203 .flag("-EL")
1204 .flag("-march=mips32r2");
1205
1206 MuslMipsMultilibs = MultilibSetBuilder()
1207 .Either(MArchMipsR2, MArchMipselR2)
1208 .makeMultilibSet();
1209
1210 // Specify the callback that computes the include directories.
1211 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1212 return std::vector<std::string>(
1213 {"/../sysroot" + M.osSuffix() + "/usr/include"});
1214 });
1215 }
1216 if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilibs)) {
1217 Result.Multilibs = MuslMipsMultilibs;
1218 return true;
1219 }
1220 return false;
1221 }
1222
findMipsMtiMultilibs(const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)1223 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags,
1224 FilterNonExistent &NonExistent,
1225 DetectedMultilibs &Result) {
1226 // CodeScape MTI toolchain v1.2 and early.
1227 MultilibSet MtiMipsMultilibsV1;
1228 {
1229 auto MArchMips32 = MultilibBuilder("/mips32")
1230 .flag("-m32")
1231 .flag("-m64", /*Disallow=*/true)
1232 .flag("-mmicromips", /*Disallow=*/true)
1233 .flag("-march=mips32");
1234
1235 auto MArchMicroMips = MultilibBuilder("/micromips")
1236 .flag("-m32")
1237 .flag("-m64", /*Disallow=*/true)
1238 .flag("-mmicromips");
1239
1240 auto MArchMips64r2 = MultilibBuilder("/mips64r2")
1241 .flag("-m32", /*Disallow=*/true)
1242 .flag("-m64")
1243 .flag("-march=mips64r2");
1244
1245 auto MArchMips64 = MultilibBuilder("/mips64")
1246 .flag("-m32", /*Disallow=*/true)
1247 .flag("-m64")
1248 .flag("-march=mips64r2", /*Disallow=*/true);
1249
1250 auto MArchDefault = MultilibBuilder("")
1251 .flag("-m32")
1252 .flag("-m64", /*Disallow=*/true)
1253 .flag("-mmicromips", /*Disallow=*/true)
1254 .flag("-march=mips32r2");
1255
1256 auto Mips16 = MultilibBuilder("/mips16").flag("-mips16");
1257
1258 auto UCLibc = MultilibBuilder("/uclibc").flag("-muclibc");
1259
1260 auto MAbi64 = MultilibBuilder("/64")
1261 .flag("-mabi=n64")
1262 .flag("-mabi=n32", /*Disallow=*/true)
1263 .flag("-m32", /*Disallow=*/true);
1264
1265 auto BigEndian =
1266 MultilibBuilder("").flag("-EB").flag("-EL", /*Disallow=*/true);
1267
1268 auto LittleEndian =
1269 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true);
1270
1271 auto SoftFloat = MultilibBuilder("/sof").flag("-msoft-float");
1272
1273 auto Nan2008 = MultilibBuilder("/nan2008").flag("-mnan=2008");
1274
1275 MtiMipsMultilibsV1 =
1276 MultilibSetBuilder()
1277 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64,
1278 MArchDefault)
1279 .Maybe(UCLibc)
1280 .Maybe(Mips16)
1281 .FilterOut("/mips64/mips16")
1282 .FilterOut("/mips64r2/mips16")
1283 .FilterOut("/micromips/mips16")
1284 .Maybe(MAbi64)
1285 .FilterOut("/micromips/64")
1286 .FilterOut("/mips32/64")
1287 .FilterOut("^/64")
1288 .FilterOut("/mips16/64")
1289 .Either(BigEndian, LittleEndian)
1290 .Maybe(SoftFloat)
1291 .Maybe(Nan2008)
1292 .FilterOut(".*sof/nan2008")
1293 .makeMultilibSet()
1294 .FilterOut(NonExistent)
1295 .setIncludeDirsCallback([](const Multilib &M) {
1296 std::vector<std::string> Dirs({"/include"});
1297 if (StringRef(M.includeSuffix()).starts_with("/uclibc"))
1298 Dirs.push_back("/../../../../sysroot/uclibc/usr/include");
1299 else
1300 Dirs.push_back("/../../../../sysroot/usr/include");
1301 return Dirs;
1302 });
1303 }
1304
1305 // CodeScape IMG toolchain starting from v1.3.
1306 MultilibSet MtiMipsMultilibsV2;
1307 {
1308 auto BeHard = MultilibBuilder("/mips-r2-hard")
1309 .flag("-EB")
1310 .flag("-msoft-float", /*Disallow=*/true)
1311 .flag("-mnan=2008", /*Disallow=*/true)
1312 .flag("-muclibc", /*Disallow=*/true);
1313 auto BeSoft = MultilibBuilder("/mips-r2-soft")
1314 .flag("-EB")
1315 .flag("-msoft-float")
1316 .flag("-mnan=2008", /*Disallow=*/true);
1317 auto ElHard = MultilibBuilder("/mipsel-r2-hard")
1318 .flag("-EL")
1319 .flag("-msoft-float", /*Disallow=*/true)
1320 .flag("-mnan=2008", /*Disallow=*/true)
1321 .flag("-muclibc", /*Disallow=*/true);
1322 auto ElSoft = MultilibBuilder("/mipsel-r2-soft")
1323 .flag("-EL")
1324 .flag("-msoft-float")
1325 .flag("-mnan=2008", /*Disallow=*/true)
1326 .flag("-mmicromips", /*Disallow=*/true);
1327 auto BeHardNan = MultilibBuilder("/mips-r2-hard-nan2008")
1328 .flag("-EB")
1329 .flag("-msoft-float", /*Disallow=*/true)
1330 .flag("-mnan=2008")
1331 .flag("-muclibc", /*Disallow=*/true);
1332 auto ElHardNan = MultilibBuilder("/mipsel-r2-hard-nan2008")
1333 .flag("-EL")
1334 .flag("-msoft-float", /*Disallow=*/true)
1335 .flag("-mnan=2008")
1336 .flag("-muclibc", /*Disallow=*/true)
1337 .flag("-mmicromips", /*Disallow=*/true);
1338 auto BeHardNanUclibc = MultilibBuilder("/mips-r2-hard-nan2008-uclibc")
1339 .flag("-EB")
1340 .flag("-msoft-float", /*Disallow=*/true)
1341 .flag("-mnan=2008")
1342 .flag("-muclibc");
1343 auto ElHardNanUclibc = MultilibBuilder("/mipsel-r2-hard-nan2008-uclibc")
1344 .flag("-EL")
1345 .flag("-msoft-float", /*Disallow=*/true)
1346 .flag("-mnan=2008")
1347 .flag("-muclibc");
1348 auto BeHardUclibc = MultilibBuilder("/mips-r2-hard-uclibc")
1349 .flag("-EB")
1350 .flag("-msoft-float", /*Disallow=*/true)
1351 .flag("-mnan=2008", /*Disallow=*/true)
1352 .flag("-muclibc");
1353 auto ElHardUclibc = MultilibBuilder("/mipsel-r2-hard-uclibc")
1354 .flag("-EL")
1355 .flag("-msoft-float", /*Disallow=*/true)
1356 .flag("-mnan=2008", /*Disallow=*/true)
1357 .flag("-muclibc");
1358 auto ElMicroHardNan = MultilibBuilder("/micromipsel-r2-hard-nan2008")
1359 .flag("-EL")
1360 .flag("-msoft-float", /*Disallow=*/true)
1361 .flag("-mnan=2008")
1362 .flag("-mmicromips");
1363 auto ElMicroSoft = MultilibBuilder("/micromipsel-r2-soft")
1364 .flag("-EL")
1365 .flag("-msoft-float")
1366 .flag("-mnan=2008", /*Disallow=*/true)
1367 .flag("-mmicromips");
1368
1369 auto O32 = MultilibBuilder("/lib")
1370 .osSuffix("")
1371 .flag("-mabi=n32", /*Disallow=*/true)
1372 .flag("-mabi=n64", /*Disallow=*/true);
1373 auto N32 = MultilibBuilder("/lib32")
1374 .osSuffix("")
1375 .flag("-mabi=n32")
1376 .flag("-mabi=n64", /*Disallow=*/true);
1377 auto N64 = MultilibBuilder("/lib64")
1378 .osSuffix("")
1379 .flag("-mabi=n32", /*Disallow=*/true)
1380 .flag("-mabi=n64");
1381
1382 MtiMipsMultilibsV2 =
1383 MultilibSetBuilder()
1384 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1385 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1386 ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1387 .Either(O32, N32, N64)
1388 .makeMultilibSet()
1389 .FilterOut(NonExistent)
1390 .setIncludeDirsCallback([](const Multilib &M) {
1391 return std::vector<std::string>({"/../../../../sysroot" +
1392 M.includeSuffix() +
1393 "/../usr/include"});
1394 })
1395 .setFilePathsCallback([](const Multilib &M) {
1396 return std::vector<std::string>(
1397 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1398 });
1399 }
1400 for (auto *Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1401 if (Candidate->select(Flags, Result.SelectedMultilibs)) {
1402 Result.Multilibs = *Candidate;
1403 return true;
1404 }
1405 }
1406 return false;
1407 }
1408
findMipsImgMultilibs(const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)1409 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags,
1410 FilterNonExistent &NonExistent,
1411 DetectedMultilibs &Result) {
1412 // CodeScape IMG toolchain v1.2 and early.
1413 MultilibSet ImgMultilibsV1;
1414 {
1415 auto Mips64r6 = MultilibBuilder("/mips64r6")
1416 .flag("-m64")
1417 .flag("-m32", /*Disallow=*/true);
1418
1419 auto LittleEndian =
1420 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true);
1421
1422 auto MAbi64 = MultilibBuilder("/64")
1423 .flag("-mabi=n64")
1424 .flag("-mabi=n32", /*Disallow=*/true)
1425 .flag("-m32", /*Disallow=*/true);
1426
1427 ImgMultilibsV1 =
1428 MultilibSetBuilder()
1429 .Maybe(Mips64r6)
1430 .Maybe(MAbi64)
1431 .Maybe(LittleEndian)
1432 .makeMultilibSet()
1433 .FilterOut(NonExistent)
1434 .setIncludeDirsCallback([](const Multilib &M) {
1435 return std::vector<std::string>(
1436 {"/include", "/../../../../sysroot/usr/include"});
1437 });
1438 }
1439
1440 // CodeScape IMG toolchain starting from v1.3.
1441 MultilibSet ImgMultilibsV2;
1442 {
1443 auto BeHard = MultilibBuilder("/mips-r6-hard")
1444 .flag("-EB")
1445 .flag("-msoft-float", /*Disallow=*/true)
1446 .flag("-mmicromips", /*Disallow=*/true);
1447 auto BeSoft = MultilibBuilder("/mips-r6-soft")
1448 .flag("-EB")
1449 .flag("-msoft-float")
1450 .flag("-mmicromips", /*Disallow=*/true);
1451 auto ElHard = MultilibBuilder("/mipsel-r6-hard")
1452 .flag("-EL")
1453 .flag("-msoft-float", /*Disallow=*/true)
1454 .flag("-mmicromips", /*Disallow=*/true);
1455 auto ElSoft = MultilibBuilder("/mipsel-r6-soft")
1456 .flag("-EL")
1457 .flag("-msoft-float")
1458 .flag("-mmicromips", /*Disallow=*/true);
1459 auto BeMicroHard = MultilibBuilder("/micromips-r6-hard")
1460 .flag("-EB")
1461 .flag("-msoft-float", /*Disallow=*/true)
1462 .flag("-mmicromips");
1463 auto BeMicroSoft = MultilibBuilder("/micromips-r6-soft")
1464 .flag("-EB")
1465 .flag("-msoft-float")
1466 .flag("-mmicromips");
1467 auto ElMicroHard = MultilibBuilder("/micromipsel-r6-hard")
1468 .flag("-EL")
1469 .flag("-msoft-float", /*Disallow=*/true)
1470 .flag("-mmicromips");
1471 auto ElMicroSoft = MultilibBuilder("/micromipsel-r6-soft")
1472 .flag("-EL")
1473 .flag("-msoft-float")
1474 .flag("-mmicromips");
1475
1476 auto O32 = MultilibBuilder("/lib")
1477 .osSuffix("")
1478 .flag("-mabi=n32", /*Disallow=*/true)
1479 .flag("-mabi=n64", /*Disallow=*/true);
1480 auto N32 = MultilibBuilder("/lib32")
1481 .osSuffix("")
1482 .flag("-mabi=n32")
1483 .flag("-mabi=n64", /*Disallow=*/true);
1484 auto N64 = MultilibBuilder("/lib64")
1485 .osSuffix("")
1486 .flag("-mabi=n32", /*Disallow=*/true)
1487 .flag("-mabi=n64");
1488
1489 ImgMultilibsV2 =
1490 MultilibSetBuilder()
1491 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1492 ElMicroHard, ElMicroSoft})
1493 .Either(O32, N32, N64)
1494 .makeMultilibSet()
1495 .FilterOut(NonExistent)
1496 .setIncludeDirsCallback([](const Multilib &M) {
1497 return std::vector<std::string>({"/../../../../sysroot" +
1498 M.includeSuffix() +
1499 "/../usr/include"});
1500 })
1501 .setFilePathsCallback([](const Multilib &M) {
1502 return std::vector<std::string>(
1503 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1504 });
1505 }
1506 for (auto *Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1507 if (Candidate->select(Flags, Result.SelectedMultilibs)) {
1508 Result.Multilibs = *Candidate;
1509 return true;
1510 }
1511 }
1512 return false;
1513 }
1514
findMIPSMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1515 bool clang::driver::findMIPSMultilibs(const Driver &D,
1516 const llvm::Triple &TargetTriple,
1517 StringRef Path, const ArgList &Args,
1518 DetectedMultilibs &Result) {
1519 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1520
1521 StringRef CPUName;
1522 StringRef ABIName;
1523 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName);
1524
1525 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1526
1527 Multilib::flags_list Flags;
1528 addMultilibFlag(TargetTriple.isMIPS32(), "-m32", Flags);
1529 addMultilibFlag(TargetTriple.isMIPS64(), "-m64", Flags);
1530 addMultilibFlag(isMips16(Args), "-mips16", Flags);
1531 addMultilibFlag(CPUName == "mips32", "-march=mips32", Flags);
1532 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" ||
1533 CPUName == "mips32r5" || CPUName == "p5600",
1534 "-march=mips32r2", Flags);
1535 addMultilibFlag(CPUName == "mips32r6", "-march=mips32r6", Flags);
1536 addMultilibFlag(CPUName == "mips64", "-march=mips64", Flags);
1537 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" ||
1538 CPUName == "mips64r5" || CPUName == "octeon" ||
1539 CPUName == "octeon+",
1540 "-march=mips64r2", Flags);
1541 addMultilibFlag(CPUName == "mips64r6", "-march=mips64r6", Flags);
1542 addMultilibFlag(isMicroMips(Args), "-mmicromips", Flags);
1543 addMultilibFlag(tools::mips::isUCLibc(Args), "-muclibc", Flags);
1544 addMultilibFlag(tools::mips::isNaN2008(D, Args, TargetTriple), "-mnan=2008",
1545 Flags);
1546 addMultilibFlag(ABIName == "n32", "-mabi=n32", Flags);
1547 addMultilibFlag(ABIName == "n64", "-mabi=n64", Flags);
1548 addMultilibFlag(isSoftFloatABI(Args), "-msoft-float", Flags);
1549 addMultilibFlag(!isSoftFloatABI(Args), "-mhard-float", Flags);
1550 addMultilibFlag(isMipsEL(TargetArch), "-EL", Flags);
1551 addMultilibFlag(!isMipsEL(TargetArch), "-EB", Flags);
1552
1553 if (TargetTriple.isAndroid())
1554 return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent,
1555 Result);
1556
1557 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1558 TargetTriple.getOS() == llvm::Triple::Linux &&
1559 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1560 return findMipsMuslMultilibs(Flags, NonExistent, Result);
1561
1562 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1563 TargetTriple.getOS() == llvm::Triple::Linux &&
1564 TargetTriple.isGNUEnvironment())
1565 return findMipsMtiMultilibs(Flags, NonExistent, Result);
1566
1567 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1568 TargetTriple.getOS() == llvm::Triple::Linux &&
1569 TargetTriple.isGNUEnvironment())
1570 return findMipsImgMultilibs(Flags, NonExistent, Result);
1571
1572 if (findMipsCsMultilibs(Flags, NonExistent, Result))
1573 return true;
1574
1575 // Fallback to the regular toolchain-tree structure.
1576 Multilib Default;
1577 Result.Multilibs.push_back(Default);
1578 Result.Multilibs.FilterOut(NonExistent);
1579
1580 if (Result.Multilibs.select(Flags, Result.SelectedMultilibs)) {
1581 Result.BiarchSibling = Multilib();
1582 return true;
1583 }
1584
1585 return false;
1586 }
1587
findAndroidArmMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1588 static void findAndroidArmMultilibs(const Driver &D,
1589 const llvm::Triple &TargetTriple,
1590 StringRef Path, const ArgList &Args,
1591 DetectedMultilibs &Result) {
1592 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1593 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1594 MultilibBuilder ArmV7Multilib = MultilibBuilder("/armv7-a")
1595 .flag("-march=armv7-a")
1596 .flag("-mthumb", /*Disallow=*/true);
1597 MultilibBuilder ThumbMultilib = MultilibBuilder("/thumb")
1598 .flag("-march=armv7-a", /*Disallow=*/true)
1599 .flag("-mthumb");
1600 MultilibBuilder ArmV7ThumbMultilib =
1601 MultilibBuilder("/armv7-a/thumb").flag("-march=armv7-a").flag("-mthumb");
1602 MultilibBuilder DefaultMultilib =
1603 MultilibBuilder("")
1604 .flag("-march=armv7-a", /*Disallow=*/true)
1605 .flag("-mthumb", /*Disallow=*/true);
1606 MultilibSet AndroidArmMultilibs =
1607 MultilibSetBuilder()
1608 .Either(ThumbMultilib, ArmV7Multilib, ArmV7ThumbMultilib,
1609 DefaultMultilib)
1610 .makeMultilibSet()
1611 .FilterOut(NonExistent);
1612
1613 Multilib::flags_list Flags;
1614 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ);
1615 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1616 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1617 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1618 bool IsThumbMode = IsThumbArch ||
1619 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) ||
1620 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB);
1621 bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1622 (llvm::ARM::parseArchVersion(Arch) == 7 ||
1623 (IsArmArch && Arch == "" && IsV7SubArch));
1624 addMultilibFlag(IsArmV7Mode, "-march=armv7-a", Flags);
1625 addMultilibFlag(IsThumbMode, "-mthumb", Flags);
1626
1627 if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilibs))
1628 Result.Multilibs = AndroidArmMultilibs;
1629 }
1630
findMSP430Multilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1631 static bool findMSP430Multilibs(const Driver &D,
1632 const llvm::Triple &TargetTriple,
1633 StringRef Path, const ArgList &Args,
1634 DetectedMultilibs &Result) {
1635 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1636 MultilibBuilder WithoutExceptions =
1637 MultilibBuilder("/430").flag("-exceptions", /*Disallow=*/true);
1638 MultilibBuilder WithExceptions =
1639 MultilibBuilder("/430/exceptions").flag("-exceptions");
1640
1641 // FIXME: when clang starts to support msp430x ISA additional logic
1642 // to select between multilib must be implemented
1643 // MultilibBuilder MSP430xMultilib = MultilibBuilder("/large");
1644
1645 Result.Multilibs.push_back(WithoutExceptions.makeMultilib());
1646 Result.Multilibs.push_back(WithExceptions.makeMultilib());
1647 Result.Multilibs.FilterOut(NonExistent);
1648
1649 Multilib::flags_list Flags;
1650 addMultilibFlag(Args.hasFlag(options::OPT_fexceptions,
1651 options::OPT_fno_exceptions, false),
1652 "-exceptions", Flags);
1653 if (Result.Multilibs.select(Flags, Result.SelectedMultilibs))
1654 return true;
1655
1656 return false;
1657 }
1658
findCSKYMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1659 static void findCSKYMultilibs(const Driver &D, const llvm::Triple &TargetTriple,
1660 StringRef Path, const ArgList &Args,
1661 DetectedMultilibs &Result) {
1662 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1663
1664 tools::csky::FloatABI TheFloatABI = tools::csky::getCSKYFloatABI(D, Args);
1665 std::optional<llvm::StringRef> Res =
1666 tools::csky::getCSKYArchName(D, Args, TargetTriple);
1667
1668 if (!Res)
1669 return;
1670 auto ARCHName = *Res;
1671
1672 Multilib::flags_list Flags;
1673 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Hard, "-hard-fp",
1674 Flags);
1675 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::SoftFP, "-soft-fp",
1676 Flags);
1677 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Soft, "-soft", Flags);
1678 addMultilibFlag(ARCHName == "ck801", "-march=ck801", Flags);
1679 addMultilibFlag(ARCHName == "ck802", "-march=ck802", Flags);
1680 addMultilibFlag(ARCHName == "ck803", "-march=ck803", Flags);
1681 addMultilibFlag(ARCHName == "ck804", "-march=ck804", Flags);
1682 addMultilibFlag(ARCHName == "ck805", "-march=ck805", Flags);
1683 addMultilibFlag(ARCHName == "ck807", "-march=ck807", Flags);
1684 addMultilibFlag(ARCHName == "ck810", "-march=ck810", Flags);
1685 addMultilibFlag(ARCHName == "ck810v", "-march=ck810v", Flags);
1686 addMultilibFlag(ARCHName == "ck860", "-march=ck860", Flags);
1687 addMultilibFlag(ARCHName == "ck860v", "-march=ck860v", Flags);
1688
1689 bool isBigEndian = false;
1690 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
1691 options::OPT_mbig_endian))
1692 isBigEndian = !A->getOption().matches(options::OPT_mlittle_endian);
1693 addMultilibFlag(isBigEndian, "-EB", Flags);
1694
1695 auto HardFloat = MultilibBuilder("/hard-fp").flag("-hard-fp");
1696 auto SoftFpFloat = MultilibBuilder("/soft-fp").flag("-soft-fp");
1697 auto SoftFloat = MultilibBuilder("").flag("-soft");
1698 auto Arch801 = MultilibBuilder("/ck801").flag("-march=ck801");
1699 auto Arch802 = MultilibBuilder("/ck802").flag("-march=ck802");
1700 auto Arch803 = MultilibBuilder("/ck803").flag("-march=ck803");
1701 // CK804 use the same library as CK803
1702 auto Arch804 = MultilibBuilder("/ck803").flag("-march=ck804");
1703 auto Arch805 = MultilibBuilder("/ck805").flag("-march=ck805");
1704 auto Arch807 = MultilibBuilder("/ck807").flag("-march=ck807");
1705 auto Arch810 = MultilibBuilder("").flag("-march=ck810");
1706 auto Arch810v = MultilibBuilder("/ck810v").flag("-march=ck810v");
1707 auto Arch860 = MultilibBuilder("/ck860").flag("-march=ck860");
1708 auto Arch860v = MultilibBuilder("/ck860v").flag("-march=ck860v");
1709 auto BigEndian = MultilibBuilder("/big").flag("-EB");
1710
1711 MultilibSet CSKYMultilibs =
1712 MultilibSetBuilder()
1713 .Maybe(BigEndian)
1714 .Either({Arch801, Arch802, Arch803, Arch804, Arch805, Arch807,
1715 Arch810, Arch810v, Arch860, Arch860v})
1716 .Either(HardFloat, SoftFpFloat, SoftFloat)
1717 .makeMultilibSet()
1718 .FilterOut(NonExistent);
1719
1720 if (CSKYMultilibs.select(Flags, Result.SelectedMultilibs))
1721 Result.Multilibs = CSKYMultilibs;
1722 }
1723
1724 /// Extend the multi-lib re-use selection mechanism for RISC-V.
1725 /// This function will try to re-use multi-lib if they are compatible.
1726 /// Definition of compatible:
1727 /// - ABI must be the same.
1728 /// - multi-lib is a subset of current arch, e.g. multi-lib=march=rv32im
1729 /// is a subset of march=rv32imc.
1730 /// - march that contains atomic extension can't reuse multi-lib that
1731 /// doesn't have atomic, vice versa. e.g. multi-lib=march=rv32im and
1732 /// march=rv32ima are not compatible, because software and hardware
1733 /// atomic operation can't work together correctly.
1734 static bool
selectRISCVMultilib(const MultilibSet & RISCVMultilibSet,StringRef Arch,const Multilib::flags_list & Flags,llvm::SmallVectorImpl<Multilib> & SelectedMultilibs)1735 selectRISCVMultilib(const MultilibSet &RISCVMultilibSet, StringRef Arch,
1736 const Multilib::flags_list &Flags,
1737 llvm::SmallVectorImpl<Multilib> &SelectedMultilibs) {
1738 // Try to find the perfect matching multi-lib first.
1739 if (RISCVMultilibSet.select(Flags, SelectedMultilibs))
1740 return true;
1741
1742 Multilib::flags_list NewFlags;
1743 std::vector<MultilibBuilder> NewMultilibs;
1744
1745 llvm::Expected<std::unique_ptr<llvm::RISCVISAInfo>> ParseResult =
1746 llvm::RISCVISAInfo::parseArchString(
1747 Arch, /*EnableExperimentalExtension=*/true,
1748 /*ExperimentalExtensionVersionCheck=*/false);
1749 // Ignore any error here, we assume it will be handled in another place.
1750 if (llvm::errorToBool(ParseResult.takeError()))
1751 return false;
1752
1753 auto &ISAInfo = *ParseResult;
1754
1755 addMultilibFlag(ISAInfo->getXLen() == 32, "-m32", NewFlags);
1756 addMultilibFlag(ISAInfo->getXLen() == 64, "-m64", NewFlags);
1757
1758 // Collect all flags except march=*
1759 for (StringRef Flag : Flags) {
1760 if (Flag.starts_with("!march=") || Flag.starts_with("-march="))
1761 continue;
1762
1763 NewFlags.push_back(Flag.str());
1764 }
1765
1766 llvm::StringSet<> AllArchExts;
1767 // Reconstruct multi-lib list, and break march option into separated
1768 // extension. e.g. march=rv32im -> +i +m
1769 for (const auto &M : RISCVMultilibSet) {
1770 bool Skip = false;
1771
1772 MultilibBuilder NewMultilib =
1773 MultilibBuilder(M.gccSuffix(), M.osSuffix(), M.includeSuffix());
1774 for (StringRef Flag : M.flags()) {
1775 // Add back all flags except -march.
1776 if (!Flag.consume_front("-march=")) {
1777 NewMultilib.flag(Flag);
1778 continue;
1779 }
1780
1781 // Break down -march into individual extension.
1782 llvm::Expected<std::unique_ptr<llvm::RISCVISAInfo>> MLConfigParseResult =
1783 llvm::RISCVISAInfo::parseArchString(
1784 Flag, /*EnableExperimentalExtension=*/true,
1785 /*ExperimentalExtensionVersionCheck=*/false);
1786 // Ignore any error here, we assume it will handled in another place.
1787 if (llvm::errorToBool(MLConfigParseResult.takeError())) {
1788 // We might get a parsing error if rv32e in the list, we could just skip
1789 // that and process the rest of multi-lib configs.
1790 Skip = true;
1791 continue;
1792 }
1793 auto &MLConfigISAInfo = *MLConfigParseResult;
1794
1795 const llvm::RISCVISAInfo::OrderedExtensionMap &MLConfigArchExts =
1796 MLConfigISAInfo->getExtensions();
1797 for (auto MLConfigArchExt : MLConfigArchExts) {
1798 auto ExtName = MLConfigArchExt.first;
1799 NewMultilib.flag(Twine("-", ExtName).str());
1800
1801 if (AllArchExts.insert(ExtName).second) {
1802 addMultilibFlag(ISAInfo->hasExtension(ExtName),
1803 Twine("-", ExtName).str(), NewFlags);
1804 }
1805 }
1806
1807 // Check the XLEN explicitly.
1808 if (MLConfigISAInfo->getXLen() == 32) {
1809 NewMultilib.flag("-m32");
1810 NewMultilib.flag("-m64", /*Disallow*/ true);
1811 } else {
1812 NewMultilib.flag("-m32", /*Disallow*/ true);
1813 NewMultilib.flag("-m64");
1814 }
1815
1816 // Atomic extension must be explicitly checked, soft and hard atomic
1817 // operation never co-work correctly.
1818 if (!MLConfigISAInfo->hasExtension("a"))
1819 NewMultilib.flag("-a", /*Disallow*/ true);
1820 }
1821
1822 if (Skip)
1823 continue;
1824
1825 NewMultilibs.emplace_back(NewMultilib);
1826 }
1827
1828 // Build an internal used only multi-lib list, used for checking any
1829 // compatible multi-lib.
1830 MultilibSet NewRISCVMultilibs =
1831 MultilibSetBuilder().Either(NewMultilibs).makeMultilibSet();
1832
1833 if (NewRISCVMultilibs.select(NewFlags, SelectedMultilibs))
1834 for (const Multilib &NewSelectedM : SelectedMultilibs)
1835 for (const auto &M : RISCVMultilibSet)
1836 // Look up the corresponding multi-lib entry in original multi-lib set.
1837 if (M.gccSuffix() == NewSelectedM.gccSuffix())
1838 return true;
1839
1840 return false;
1841 }
1842
findRISCVBareMetalMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1843 static void findRISCVBareMetalMultilibs(const Driver &D,
1844 const llvm::Triple &TargetTriple,
1845 StringRef Path, const ArgList &Args,
1846 DetectedMultilibs &Result) {
1847 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1848 struct RiscvMultilib {
1849 StringRef march;
1850 StringRef mabi;
1851 };
1852 // currently only support the set of multilibs like riscv-gnu-toolchain does.
1853 // TODO: support MULTILIB_REUSE
1854 constexpr RiscvMultilib RISCVMultilibSet[] = {
1855 {"rv32i", "ilp32"}, {"rv32im", "ilp32"}, {"rv32iac", "ilp32"},
1856 {"rv32imac", "ilp32"}, {"rv32imafc", "ilp32f"}, {"rv64imac", "lp64"},
1857 {"rv64imafdc", "lp64d"}};
1858
1859 std::vector<MultilibBuilder> Ms;
1860 for (auto Element : RISCVMultilibSet) {
1861 // multilib path rule is ${march}/${mabi}
1862 Ms.emplace_back(
1863 MultilibBuilder(
1864 (Twine(Element.march) + "/" + Twine(Element.mabi)).str())
1865 .flag(Twine("-march=", Element.march).str())
1866 .flag(Twine("-mabi=", Element.mabi).str()));
1867 }
1868 MultilibSet RISCVMultilibs =
1869 MultilibSetBuilder()
1870 .Either(Ms)
1871 .makeMultilibSet()
1872 .FilterOut(NonExistent)
1873 .setFilePathsCallback([](const Multilib &M) {
1874 return std::vector<std::string>(
1875 {M.gccSuffix(),
1876 "/../../../../riscv64-unknown-elf/lib" + M.gccSuffix(),
1877 "/../../../../riscv32-unknown-elf/lib" + M.gccSuffix()});
1878 });
1879
1880 Multilib::flags_list Flags;
1881 llvm::StringSet<> Added_ABIs;
1882 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1883 StringRef MArch = tools::riscv::getRISCVArch(Args, TargetTriple);
1884 for (auto Element : RISCVMultilibSet) {
1885 addMultilibFlag(MArch == Element.march,
1886 Twine("-march=", Element.march).str().c_str(), Flags);
1887 if (!Added_ABIs.count(Element.mabi)) {
1888 Added_ABIs.insert(Element.mabi);
1889 addMultilibFlag(ABIName == Element.mabi,
1890 Twine("-mabi=", Element.mabi).str().c_str(), Flags);
1891 }
1892 }
1893
1894 if (selectRISCVMultilib(RISCVMultilibs, MArch, Flags,
1895 Result.SelectedMultilibs))
1896 Result.Multilibs = RISCVMultilibs;
1897 }
1898
findRISCVMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1899 static void findRISCVMultilibs(const Driver &D,
1900 const llvm::Triple &TargetTriple, StringRef Path,
1901 const ArgList &Args, DetectedMultilibs &Result) {
1902 if (TargetTriple.getOS() == llvm::Triple::UnknownOS)
1903 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result);
1904
1905 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1906 MultilibBuilder Ilp32 =
1907 MultilibBuilder("lib32/ilp32").flag("-m32").flag("-mabi=ilp32");
1908 MultilibBuilder Ilp32f =
1909 MultilibBuilder("lib32/ilp32f").flag("-m32").flag("-mabi=ilp32f");
1910 MultilibBuilder Ilp32d =
1911 MultilibBuilder("lib32/ilp32d").flag("-m32").flag("-mabi=ilp32d");
1912 MultilibBuilder Lp64 =
1913 MultilibBuilder("lib64/lp64").flag("-m64").flag("-mabi=lp64");
1914 MultilibBuilder Lp64f =
1915 MultilibBuilder("lib64/lp64f").flag("-m64").flag("-mabi=lp64f");
1916 MultilibBuilder Lp64d =
1917 MultilibBuilder("lib64/lp64d").flag("-m64").flag("-mabi=lp64d");
1918 MultilibSet RISCVMultilibs =
1919 MultilibSetBuilder()
1920 .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d})
1921 .makeMultilibSet()
1922 .FilterOut(NonExistent);
1923
1924 Multilib::flags_list Flags;
1925 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64;
1926 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1927
1928 addMultilibFlag(!IsRV64, "-m32", Flags);
1929 addMultilibFlag(IsRV64, "-m64", Flags);
1930 addMultilibFlag(ABIName == "ilp32", "-mabi=ilp32", Flags);
1931 addMultilibFlag(ABIName == "ilp32f", "-mabi=ilp32f", Flags);
1932 addMultilibFlag(ABIName == "ilp32d", "-mabi=ilp32d", Flags);
1933 addMultilibFlag(ABIName == "lp64", "-mabi=lp64", Flags);
1934 addMultilibFlag(ABIName == "lp64f", "-mabi=lp64f", Flags);
1935 addMultilibFlag(ABIName == "lp64d", "-mabi=lp64d", Flags);
1936
1937 if (RISCVMultilibs.select(Flags, Result.SelectedMultilibs))
1938 Result.Multilibs = RISCVMultilibs;
1939 }
1940
findBiarchMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,bool NeedsBiarchSuffix,DetectedMultilibs & Result)1941 static bool findBiarchMultilibs(const Driver &D,
1942 const llvm::Triple &TargetTriple,
1943 StringRef Path, const ArgList &Args,
1944 bool NeedsBiarchSuffix,
1945 DetectedMultilibs &Result) {
1946 MultilibBuilder DefaultBuilder;
1947
1948 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1949 // in what would normally be GCCInstallPath and put the 64-bit
1950 // libs in a subdirectory named 64. The simple logic we follow is that
1951 // *if* there is a subdirectory of the right name with crtbegin.o in it,
1952 // we use that. If not, and if not a biarch triple alias, we look for
1953 // crtbegin.o without the subdirectory.
1954
1955 StringRef Suff64 = "/64";
1956 // Solaris uses platform-specific suffixes instead of /64.
1957 if (TargetTriple.isOSSolaris()) {
1958 switch (TargetTriple.getArch()) {
1959 case llvm::Triple::x86:
1960 case llvm::Triple::x86_64:
1961 Suff64 = "/amd64";
1962 break;
1963 case llvm::Triple::sparc:
1964 case llvm::Triple::sparcv9:
1965 Suff64 = "/sparcv9";
1966 break;
1967 default:
1968 break;
1969 }
1970 }
1971
1972 Multilib Alt64 = MultilibBuilder()
1973 .gccSuffix(Suff64)
1974 .includeSuffix(Suff64)
1975 .flag("-m32", /*Disallow=*/true)
1976 .flag("-m64")
1977 .flag("-mx32", /*Disallow=*/true)
1978 .makeMultilib();
1979 Multilib Alt32 = MultilibBuilder()
1980 .gccSuffix("/32")
1981 .includeSuffix("/32")
1982 .flag("-m32")
1983 .flag("-m64", /*Disallow=*/true)
1984 .flag("-mx32", /*Disallow=*/true)
1985 .makeMultilib();
1986 Multilib Altx32 = MultilibBuilder()
1987 .gccSuffix("/x32")
1988 .includeSuffix("/x32")
1989 .flag("-m32", /*Disallow=*/true)
1990 .flag("-m64", /*Disallow=*/true)
1991 .flag("-mx32")
1992 .makeMultilib();
1993 Multilib Alt32sparc = MultilibBuilder()
1994 .gccSuffix("/sparcv8plus")
1995 .includeSuffix("/sparcv8plus")
1996 .flag("-m32")
1997 .flag("-m64", /*Disallow=*/true)
1998 .makeMultilib();
1999
2000 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
2001 FilterNonExistent NonExistent(
2002 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
2003
2004 // Determine default multilib from: 32, 64, x32
2005 // Also handle cases such as 64 on 32, 32 on 64, etc.
2006 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
2007 const bool IsX32 = TargetTriple.isX32();
2008 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
2009 Want = WANT64;
2010 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32sparc))
2011 Want = WANT64;
2012 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
2013 Want = WANT64;
2014 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
2015 Want = WANT32;
2016 else if (TargetTriple.isArch64Bit() && !NonExistent(Alt32sparc))
2017 Want = WANT64;
2018 else {
2019 if (TargetTriple.isArch32Bit())
2020 Want = NeedsBiarchSuffix ? WANT64 : WANT32;
2021 else if (IsX32)
2022 Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
2023 else
2024 Want = NeedsBiarchSuffix ? WANT32 : WANT64;
2025 }
2026
2027 if (Want == WANT32)
2028 DefaultBuilder.flag("-m32")
2029 .flag("-m64", /*Disallow=*/true)
2030 .flag("-mx32", /*Disallow=*/true);
2031 else if (Want == WANT64)
2032 DefaultBuilder.flag("-m32", /*Disallow=*/true)
2033 .flag("-m64")
2034 .flag("-mx32", /*Disallow=*/true);
2035 else if (Want == WANTX32)
2036 DefaultBuilder.flag("-m32", /*Disallow=*/true)
2037 .flag("-m64", /*Disallow=*/true)
2038 .flag("-mx32");
2039 else
2040 return false;
2041
2042 Multilib Default = DefaultBuilder.makeMultilib();
2043
2044 Result.Multilibs.push_back(Default);
2045 Result.Multilibs.push_back(Alt64);
2046 Result.Multilibs.push_back(Alt32);
2047 Result.Multilibs.push_back(Altx32);
2048 Result.Multilibs.push_back(Alt32sparc);
2049
2050 Result.Multilibs.FilterOut(NonExistent);
2051
2052 Multilib::flags_list Flags;
2053 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "-m64", Flags);
2054 addMultilibFlag(TargetTriple.isArch32Bit(), "-m32", Flags);
2055 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "-mx32", Flags);
2056
2057 if (!Result.Multilibs.select(Flags, Result.SelectedMultilibs))
2058 return false;
2059
2060 if (Result.SelectedMultilibs.back() == Alt64 ||
2061 Result.SelectedMultilibs.back() == Alt32 ||
2062 Result.SelectedMultilibs.back() == Altx32 ||
2063 Result.SelectedMultilibs.back() == Alt32sparc)
2064 Result.BiarchSibling = Default;
2065
2066 return true;
2067 }
2068
2069 /// Generic_GCC - A tool chain using the 'gcc' command to perform
2070 /// all subcommands; this relies on gcc translating the majority of
2071 /// command line options.
2072
2073 /// Less-than for GCCVersion, implementing a Strict Weak Ordering.
isOlderThan(int RHSMajor,int RHSMinor,int RHSPatch,StringRef RHSPatchSuffix) const2074 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
2075 int RHSPatch,
2076 StringRef RHSPatchSuffix) const {
2077 if (Major != RHSMajor)
2078 return Major < RHSMajor;
2079 if (Minor != RHSMinor) {
2080 // Note that versions without a specified minor sort higher than those with
2081 // a minor.
2082 if (RHSMinor == -1)
2083 return true;
2084 if (Minor == -1)
2085 return false;
2086 return Minor < RHSMinor;
2087 }
2088 if (Patch != RHSPatch) {
2089 // Note that versions without a specified patch sort higher than those with
2090 // a patch.
2091 if (RHSPatch == -1)
2092 return true;
2093 if (Patch == -1)
2094 return false;
2095
2096 // Otherwise just sort on the patch itself.
2097 return Patch < RHSPatch;
2098 }
2099 if (PatchSuffix != RHSPatchSuffix) {
2100 // Sort empty suffixes higher.
2101 if (RHSPatchSuffix.empty())
2102 return true;
2103 if (PatchSuffix.empty())
2104 return false;
2105
2106 // Provide a lexicographic sort to make this a total ordering.
2107 return PatchSuffix < RHSPatchSuffix;
2108 }
2109
2110 // The versions are equal.
2111 return false;
2112 }
2113
2114 /// Parse a GCCVersion object out of a string of text.
2115 ///
2116 /// This is the primary means of forming GCCVersion objects.
2117 /*static*/
Parse(StringRef VersionText)2118 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) {
2119 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
2120 std::pair<StringRef, StringRef> First = VersionText.split('.');
2121 std::pair<StringRef, StringRef> Second = First.second.split('.');
2122
2123 StringRef MajorStr = First.first;
2124 StringRef MinorStr = Second.first;
2125 StringRef PatchStr = Second.second;
2126
2127 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
2128
2129 // Parse version number strings such as:
2130 // 5
2131 // 4.4
2132 // 4.4-patched
2133 // 4.4.0
2134 // 4.4.x
2135 // 4.4.2-rc4
2136 // 4.4.x-patched
2137 // 10-win32
2138 // Split on '.', handle 1, 2 or 3 such segments. Each segment must contain
2139 // purely a number, except for the last one, where a non-number suffix
2140 // is stored in PatchSuffix. The third segment is allowed to not contain
2141 // a number at all.
2142
2143 auto TryParseLastNumber = [&](StringRef Segment, int &Number,
2144 std::string &OutStr) -> bool {
2145 // Look for a number prefix and parse that, and split out any trailing
2146 // string into GoodVersion.PatchSuffix.
2147
2148 if (size_t EndNumber = Segment.find_first_not_of("0123456789")) {
2149 StringRef NumberStr = Segment.slice(0, EndNumber);
2150 if (NumberStr.getAsInteger(10, Number) || Number < 0)
2151 return false;
2152 OutStr = NumberStr;
2153 GoodVersion.PatchSuffix = Segment.substr(EndNumber);
2154 return true;
2155 }
2156 return false;
2157 };
2158 auto TryParseNumber = [](StringRef Segment, int &Number) -> bool {
2159 if (Segment.getAsInteger(10, Number) || Number < 0)
2160 return false;
2161 return true;
2162 };
2163
2164 if (MinorStr.empty()) {
2165 // If no minor string, major is the last segment
2166 if (!TryParseLastNumber(MajorStr, GoodVersion.Major, GoodVersion.MajorStr))
2167 return BadVersion;
2168 return GoodVersion;
2169 }
2170
2171 if (!TryParseNumber(MajorStr, GoodVersion.Major))
2172 return BadVersion;
2173 GoodVersion.MajorStr = MajorStr;
2174
2175 if (PatchStr.empty()) {
2176 // If no patch string, minor is the last segment
2177 if (!TryParseLastNumber(MinorStr, GoodVersion.Minor, GoodVersion.MinorStr))
2178 return BadVersion;
2179 return GoodVersion;
2180 }
2181
2182 if (!TryParseNumber(MinorStr, GoodVersion.Minor))
2183 return BadVersion;
2184 GoodVersion.MinorStr = MinorStr;
2185
2186 // For the last segment, tolerate a missing number.
2187 std::string DummyStr;
2188 TryParseLastNumber(PatchStr, GoodVersion.Patch, DummyStr);
2189 return GoodVersion;
2190 }
2191
getGCCToolchainDir(const ArgList & Args,llvm::StringRef SysRoot)2192 static llvm::StringRef getGCCToolchainDir(const ArgList &Args,
2193 llvm::StringRef SysRoot) {
2194 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain);
2195 if (A)
2196 return A->getValue();
2197
2198 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX.
2199 // GCC_INSTALL_PREFIX specifies the gcc installation for the default
2200 // sysroot and is likely not valid with a different sysroot.
2201 if (!SysRoot.empty())
2202 return "";
2203
2204 return GCC_INSTALL_PREFIX;
2205 }
2206
2207 /// Initialize a GCCInstallationDetector from the driver.
2208 ///
2209 /// This performs all of the autodetection and sets up the various paths.
2210 /// Once constructed, a GCCInstallationDetector is essentially immutable.
2211 ///
2212 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
2213 /// should instead pull the target out of the driver. This is currently
2214 /// necessary because the driver doesn't store the final version of the target
2215 /// triple.
init(const llvm::Triple & TargetTriple,const ArgList & Args)2216 void Generic_GCC::GCCInstallationDetector::init(
2217 const llvm::Triple &TargetTriple, const ArgList &Args) {
2218 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
2219 ? TargetTriple.get64BitArchVariant()
2220 : TargetTriple.get32BitArchVariant();
2221 // The library directories which may contain GCC installations.
2222 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
2223 // The compatible GCC triples for this particular architecture.
2224 SmallVector<StringRef, 16> CandidateTripleAliases;
2225 SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
2226 // Add some triples that we want to check first.
2227 CandidateTripleAliases.push_back(TargetTriple.str());
2228 std::string TripleNoVendor = TargetTriple.getArchName().str() + "-" +
2229 TargetTriple.getOSAndEnvironmentName().str();
2230 if (TargetTriple.getVendor() == llvm::Triple::UnknownVendor)
2231 CandidateTripleAliases.push_back(TripleNoVendor);
2232
2233 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs,
2234 CandidateTripleAliases, CandidateBiarchLibDirs,
2235 CandidateBiarchTripleAliases);
2236
2237 // If --gcc-install-dir= is specified, skip filesystem detection.
2238 if (const Arg *A =
2239 Args.getLastArg(clang::driver::options::OPT_gcc_install_dir_EQ);
2240 A && A->getValue()[0]) {
2241 StringRef InstallDir = A->getValue();
2242 if (!ScanGCCForMultilibs(TargetTriple, Args, InstallDir, false)) {
2243 D.Diag(diag::err_drv_invalid_gcc_install_dir) << InstallDir;
2244 } else {
2245 (void)InstallDir.consume_back("/");
2246 StringRef VersionText = llvm::sys::path::filename(InstallDir);
2247 StringRef TripleText =
2248 llvm::sys::path::filename(llvm::sys::path::parent_path(InstallDir));
2249
2250 Version = GCCVersion::Parse(VersionText);
2251 GCCTriple.setTriple(TripleText);
2252 GCCInstallPath = std::string(InstallDir);
2253 GCCParentLibPath = GCCInstallPath + "/../../..";
2254 IsValid = true;
2255 }
2256 return;
2257 }
2258
2259 // If --gcc-triple is specified use this instead of trying to
2260 // auto-detect a triple.
2261 if (const Arg *A =
2262 Args.getLastArg(clang::driver::options::OPT_gcc_triple_EQ)) {
2263 StringRef GCCTriple = A->getValue();
2264 CandidateTripleAliases.clear();
2265 CandidateTripleAliases.push_back(GCCTriple);
2266 }
2267
2268 // Compute the set of prefixes for our search.
2269 SmallVector<std::string, 8> Prefixes;
2270 StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot);
2271 if (GCCToolchainDir != "") {
2272 if (GCCToolchainDir.back() == '/')
2273 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
2274
2275 Prefixes.push_back(std::string(GCCToolchainDir));
2276 } else {
2277 // If we have a SysRoot, try that first.
2278 if (!D.SysRoot.empty()) {
2279 Prefixes.push_back(D.SysRoot);
2280 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
2281 }
2282
2283 // Then look for gcc installed alongside clang.
2284 Prefixes.push_back(D.InstalledDir + "/..");
2285
2286 // Next, look for prefix(es) that correspond to distribution-supplied gcc
2287 // installations.
2288 if (D.SysRoot.empty()) {
2289 // Typically /usr.
2290 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
2291 }
2292
2293 // Try to respect gcc-config on Gentoo if --gcc-toolchain is not provided.
2294 // This avoids accidentally enforcing the system GCC version when using a
2295 // custom toolchain.
2296 SmallVector<StringRef, 16> GentooTestTriples;
2297 // Try to match an exact triple as target triple first.
2298 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for
2299 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu"
2300 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching
2301 // triple x86_64-gentoo-linux-gnu is present.
2302 GentooTestTriples.push_back(TargetTriple.str());
2303 GentooTestTriples.append(CandidateTripleAliases.begin(),
2304 CandidateTripleAliases.end());
2305 if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples,
2306 CandidateBiarchTripleAliases))
2307 return;
2308 }
2309
2310 // Loop over the various components which exist and select the best GCC
2311 // installation available. GCC installs are ranked by version number.
2312 const GCCVersion VersionZero = GCCVersion::Parse("0.0.0");
2313 Version = VersionZero;
2314 for (const std::string &Prefix : Prefixes) {
2315 auto &VFS = D.getVFS();
2316 if (!VFS.exists(Prefix))
2317 continue;
2318 for (StringRef Suffix : CandidateLibDirs) {
2319 const std::string LibDir = concat(Prefix, Suffix);
2320 if (!VFS.exists(LibDir))
2321 continue;
2322 // Maybe filter out <libdir>/gcc and <libdir>/gcc-cross.
2323 bool GCCDirExists = VFS.exists(LibDir + "/gcc");
2324 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross");
2325 for (StringRef Candidate : CandidateTripleAliases)
2326 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, false,
2327 GCCDirExists, GCCCrossDirExists);
2328 }
2329 for (StringRef Suffix : CandidateBiarchLibDirs) {
2330 const std::string LibDir = Prefix + Suffix.str();
2331 if (!VFS.exists(LibDir))
2332 continue;
2333 bool GCCDirExists = VFS.exists(LibDir + "/gcc");
2334 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross");
2335 for (StringRef Candidate : CandidateBiarchTripleAliases)
2336 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, true,
2337 GCCDirExists, GCCCrossDirExists);
2338 }
2339
2340 // Skip other prefixes once a GCC installation is found.
2341 if (Version > VersionZero)
2342 break;
2343 }
2344 }
2345
print(raw_ostream & OS) const2346 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
2347 for (const auto &InstallPath : CandidateGCCInstallPaths)
2348 OS << "Found candidate GCC installation: " << InstallPath << "\n";
2349
2350 if (!GCCInstallPath.empty())
2351 OS << "Selected GCC installation: " << GCCInstallPath << "\n";
2352
2353 for (const auto &Multilib : Multilibs)
2354 OS << "Candidate multilib: " << Multilib << "\n";
2355
2356 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault())
2357 OS << "Selected multilib: " << SelectedMultilib << "\n";
2358 }
2359
getBiarchSibling(Multilib & M) const2360 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const {
2361 if (BiarchSibling) {
2362 M = *BiarchSibling;
2363 return true;
2364 }
2365 return false;
2366 }
2367
AddDefaultGCCPrefixes(const llvm::Triple & TargetTriple,SmallVectorImpl<std::string> & Prefixes,StringRef SysRoot)2368 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
2369 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes,
2370 StringRef SysRoot) {
2371
2372 if (TargetTriple.isOSHaiku()) {
2373 Prefixes.push_back(concat(SysRoot, "/boot/system/develop/tools"));
2374 return;
2375 }
2376
2377 if (TargetTriple.isOSSolaris()) {
2378 // Solaris is a special case.
2379 // The GCC installation is under
2380 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/
2381 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with
2382 // /usr/gcc/<version> as a prefix.
2383
2384 SmallVector<std::pair<GCCVersion, std::string>, 8> SolarisPrefixes;
2385 std::string PrefixDir = concat(SysRoot, "/usr/gcc");
2386 std::error_code EC;
2387 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC),
2388 LE;
2389 !EC && LI != LE; LI = LI.increment(EC)) {
2390 StringRef VersionText = llvm::sys::path::filename(LI->path());
2391 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2392
2393 // Filter out obviously bad entries.
2394 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1))
2395 continue;
2396
2397 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str();
2398 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc";
2399 if (!D.getVFS().exists(CandidateLibPath))
2400 continue;
2401
2402 SolarisPrefixes.emplace_back(
2403 std::make_pair(CandidateVersion, CandidatePrefix));
2404 }
2405 // Sort in reverse order so GCCInstallationDetector::init picks the latest.
2406 std::sort(SolarisPrefixes.rbegin(), SolarisPrefixes.rend());
2407 for (auto p : SolarisPrefixes)
2408 Prefixes.emplace_back(p.second);
2409 return;
2410 }
2411
2412 // For Linux, if --sysroot is not specified, look for RHEL/CentOS devtoolsets
2413 // and gcc-toolsets.
2414 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux &&
2415 D.getVFS().exists("/opt/rh")) {
2416 // TODO: We may want to remove this, since the functionality
2417 // can be achieved using config files.
2418 Prefixes.push_back("/opt/rh/gcc-toolset-12/root/usr");
2419 Prefixes.push_back("/opt/rh/gcc-toolset-11/root/usr");
2420 Prefixes.push_back("/opt/rh/gcc-toolset-10/root/usr");
2421 Prefixes.push_back("/opt/rh/devtoolset-12/root/usr");
2422 Prefixes.push_back("/opt/rh/devtoolset-11/root/usr");
2423 Prefixes.push_back("/opt/rh/devtoolset-10/root/usr");
2424 Prefixes.push_back("/opt/rh/devtoolset-9/root/usr");
2425 Prefixes.push_back("/opt/rh/devtoolset-8/root/usr");
2426 Prefixes.push_back("/opt/rh/devtoolset-7/root/usr");
2427 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr");
2428 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr");
2429 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr");
2430 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr");
2431 }
2432
2433 // Fall back to /usr which is used by most non-Solaris systems.
2434 Prefixes.push_back(concat(SysRoot, "/usr"));
2435 }
2436
CollectLibDirsAndTriples(const llvm::Triple & TargetTriple,const llvm::Triple & BiarchTriple,SmallVectorImpl<StringRef> & LibDirs,SmallVectorImpl<StringRef> & TripleAliases,SmallVectorImpl<StringRef> & BiarchLibDirs,SmallVectorImpl<StringRef> & BiarchTripleAliases)2437 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
2438 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
2439 SmallVectorImpl<StringRef> &LibDirs,
2440 SmallVectorImpl<StringRef> &TripleAliases,
2441 SmallVectorImpl<StringRef> &BiarchLibDirs,
2442 SmallVectorImpl<StringRef> &BiarchTripleAliases) {
2443 // Declare a bunch of static data sets that we'll select between below. These
2444 // are specifically designed to always refer to string literals to avoid any
2445 // lifetime or initialization issues.
2446 //
2447 // The *Triples variables hard code some triples so that, for example,
2448 // --target=aarch64 (incomplete triple) can detect lib/aarch64-linux-gnu.
2449 // They are not needed when the user has correct LLVM_DEFAULT_TARGET_TRIPLE
2450 // and always uses the full --target (e.g. --target=aarch64-linux-gnu). The
2451 // lists should shrink over time. Please don't add more elements to *Triples.
2452 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
2453 static const char *const AArch64Triples[] = {
2454 "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-redhat-linux",
2455 "aarch64-suse-linux"};
2456 static const char *const AArch64beLibDirs[] = {"/lib"};
2457 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu",
2458 "aarch64_be-linux-gnu"};
2459
2460 static const char *const ARMLibDirs[] = {"/lib"};
2461 static const char *const ARMTriples[] = {"arm-linux-gnueabi"};
2462 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
2463 "armv7hl-redhat-linux-gnueabi",
2464 "armv6hl-suse-linux-gnueabi",
2465 "armv7hl-suse-linux-gnueabi"};
2466 static const char *const ARMebLibDirs[] = {"/lib"};
2467 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi"};
2468 static const char *const ARMebHFTriples[] = {
2469 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
2470
2471 static const char *const AVRLibDirs[] = {"/lib"};
2472 static const char *const AVRTriples[] = {"avr"};
2473
2474 static const char *const CSKYLibDirs[] = {"/lib"};
2475 static const char *const CSKYTriples[] = {
2476 "csky-linux-gnuabiv2", "csky-linux-uclibcabiv2", "csky-elf-noneabiv2"};
2477
2478 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
2479 static const char *const X86_64Triples[] = {
2480 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
2481 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
2482 "x86_64-redhat-linux", "x86_64-suse-linux",
2483 "x86_64-manbo-linux-gnu", "x86_64-linux-gnu",
2484 "x86_64-slackware-linux", "x86_64-unknown-linux",
2485 "x86_64-amazon-linux"};
2486 static const char *const X32Triples[] = {"x86_64-linux-gnux32",
2487 "x86_64-pc-linux-gnux32"};
2488 static const char *const X32LibDirs[] = {"/libx32", "/lib"};
2489 static const char *const X86LibDirs[] = {"/lib32", "/lib"};
2490 static const char *const X86Triples[] = {
2491 "i586-linux-gnu", "i686-linux-gnu", "i686-pc-linux-gnu",
2492 "i386-redhat-linux6E", "i686-redhat-linux", "i386-redhat-linux",
2493 "i586-suse-linux", "i686-montavista-linux",
2494 };
2495
2496 static const char *const LoongArch64LibDirs[] = {"/lib64", "/lib"};
2497 static const char *const LoongArch64Triples[] = {
2498 "loongarch64-linux-gnu", "loongarch64-unknown-linux-gnu"};
2499
2500 static const char *const M68kLibDirs[] = {"/lib"};
2501 static const char *const M68kTriples[] = {
2502 "m68k-linux-gnu", "m68k-unknown-linux-gnu", "m68k-suse-linux"};
2503
2504 static const char *const MIPSLibDirs[] = {"/libo32", "/lib"};
2505 static const char *const MIPSTriples[] = {
2506 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu",
2507 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"};
2508 static const char *const MIPSELLibDirs[] = {"/libo32", "/lib"};
2509 static const char *const MIPSELTriples[] = {
2510 "mipsel-linux-gnu", "mips-img-linux-gnu", "mipsisa32r6el-linux-gnu"};
2511
2512 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
2513 static const char *const MIPS64Triples[] = {
2514 "mips64-linux-gnu", "mips-mti-linux-gnu",
2515 "mips-img-linux-gnu", "mips64-linux-gnuabi64",
2516 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"};
2517 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
2518 static const char *const MIPS64ELTriples[] = {
2519 "mips64el-linux-gnu", "mips-mti-linux-gnu",
2520 "mips-img-linux-gnu", "mips64el-linux-gnuabi64",
2521 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64"};
2522
2523 static const char *const MIPSN32LibDirs[] = {"/lib32"};
2524 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32",
2525 "mipsisa64r6-linux-gnuabin32"};
2526 static const char *const MIPSN32ELLibDirs[] = {"/lib32"};
2527 static const char *const MIPSN32ELTriples[] = {
2528 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"};
2529
2530 static const char *const MSP430LibDirs[] = {"/lib"};
2531 static const char *const MSP430Triples[] = {"msp430-elf"};
2532
2533 static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
2534 static const char *const PPCTriples[] = {
2535 "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe",
2536 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a
2537 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux".
2538 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"};
2539 static const char *const PPCLELibDirs[] = {"/lib32", "/lib"};
2540 static const char *const PPCLETriples[] = {"powerpcle-linux-gnu",
2541 "powerpcle-unknown-linux-gnu",
2542 "powerpcle-linux-musl"};
2543
2544 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
2545 static const char *const PPC64Triples[] = {
2546 "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu",
2547 "powerpc64-suse-linux", "ppc64-redhat-linux"};
2548 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
2549 static const char *const PPC64LETriples[] = {
2550 "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu",
2551 "powerpc64le-none-linux-gnu", "powerpc64le-suse-linux",
2552 "ppc64le-redhat-linux"};
2553
2554 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"};
2555 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu",
2556 "riscv32-linux-gnu",
2557 "riscv32-unknown-elf"};
2558 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"};
2559 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu",
2560 "riscv64-linux-gnu",
2561 "riscv64-unknown-elf"};
2562
2563 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
2564 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
2565 "sparcv8-linux-gnu"};
2566 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
2567 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
2568 "sparcv9-linux-gnu"};
2569
2570 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
2571 static const char *const SystemZTriples[] = {
2572 "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu",
2573 "s390x-suse-linux", "s390x-redhat-linux"};
2574
2575
2576 using std::begin;
2577 using std::end;
2578
2579 if (TargetTriple.isOSSolaris()) {
2580 static const char *const SolarisLibDirs[] = {"/lib"};
2581 static const char *const SolarisSparcV8Triples[] = {
2582 "sparc-sun-solaris2.11"};
2583 static const char *const SolarisSparcV9Triples[] = {
2584 "sparcv9-sun-solaris2.11"};
2585 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11"};
2586 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11"};
2587 LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
2588 BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
2589 switch (TargetTriple.getArch()) {
2590 case llvm::Triple::x86:
2591 TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples));
2592 BiarchTripleAliases.append(begin(SolarisX86_64Triples),
2593 end(SolarisX86_64Triples));
2594 break;
2595 case llvm::Triple::x86_64:
2596 TripleAliases.append(begin(SolarisX86_64Triples),
2597 end(SolarisX86_64Triples));
2598 BiarchTripleAliases.append(begin(SolarisX86Triples),
2599 end(SolarisX86Triples));
2600 break;
2601 case llvm::Triple::sparc:
2602 TripleAliases.append(begin(SolarisSparcV8Triples),
2603 end(SolarisSparcV8Triples));
2604 BiarchTripleAliases.append(begin(SolarisSparcV9Triples),
2605 end(SolarisSparcV9Triples));
2606 break;
2607 case llvm::Triple::sparcv9:
2608 TripleAliases.append(begin(SolarisSparcV9Triples),
2609 end(SolarisSparcV9Triples));
2610 BiarchTripleAliases.append(begin(SolarisSparcV8Triples),
2611 end(SolarisSparcV8Triples));
2612 break;
2613 default:
2614 break;
2615 }
2616 return;
2617 }
2618
2619 // Android targets should not use GNU/Linux tools or libraries.
2620 if (TargetTriple.isAndroid()) {
2621 static const char *const AArch64AndroidTriples[] = {
2622 "aarch64-linux-android"};
2623 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"};
2624 static const char *const X86AndroidTriples[] = {"i686-linux-android"};
2625 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"};
2626
2627 switch (TargetTriple.getArch()) {
2628 case llvm::Triple::aarch64:
2629 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2630 TripleAliases.append(begin(AArch64AndroidTriples),
2631 end(AArch64AndroidTriples));
2632 break;
2633 case llvm::Triple::arm:
2634 case llvm::Triple::thumb:
2635 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2636 TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples));
2637 break;
2638 case llvm::Triple::x86_64:
2639 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2640 TripleAliases.append(begin(X86_64AndroidTriples),
2641 end(X86_64AndroidTriples));
2642 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2643 BiarchTripleAliases.append(begin(X86AndroidTriples),
2644 end(X86AndroidTriples));
2645 break;
2646 case llvm::Triple::x86:
2647 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2648 TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples));
2649 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2650 BiarchTripleAliases.append(begin(X86_64AndroidTriples),
2651 end(X86_64AndroidTriples));
2652 break;
2653 default:
2654 break;
2655 }
2656
2657 return;
2658 }
2659
2660 if (TargetTriple.isOSHurd()) {
2661 switch (TargetTriple.getArch()) {
2662 case llvm::Triple::x86_64:
2663 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2664 TripleAliases.push_back("x86_64-gnu");
2665 break;
2666 case llvm::Triple::x86:
2667 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2668 TripleAliases.push_back("i686-gnu");
2669 break;
2670 default:
2671 break;
2672 }
2673
2674 return;
2675 }
2676
2677 switch (TargetTriple.getArch()) {
2678 case llvm::Triple::aarch64:
2679 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2680 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2681 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2682 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2683 break;
2684 case llvm::Triple::aarch64_be:
2685 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2686 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2687 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2688 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2689 break;
2690 case llvm::Triple::arm:
2691 case llvm::Triple::thumb:
2692 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2693 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF ||
2694 TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF ||
2695 TargetTriple.getEnvironment() == llvm::Triple::EABIHF) {
2696 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples));
2697 } else {
2698 TripleAliases.append(begin(ARMTriples), end(ARMTriples));
2699 }
2700 break;
2701 case llvm::Triple::armeb:
2702 case llvm::Triple::thumbeb:
2703 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs));
2704 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF ||
2705 TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF ||
2706 TargetTriple.getEnvironment() == llvm::Triple::EABIHF) {
2707 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples));
2708 } else {
2709 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples));
2710 }
2711 break;
2712 case llvm::Triple::avr:
2713 LibDirs.append(begin(AVRLibDirs), end(AVRLibDirs));
2714 TripleAliases.append(begin(AVRTriples), end(AVRTriples));
2715 break;
2716 case llvm::Triple::csky:
2717 LibDirs.append(begin(CSKYLibDirs), end(CSKYLibDirs));
2718 TripleAliases.append(begin(CSKYTriples), end(CSKYTriples));
2719 break;
2720 case llvm::Triple::x86_64:
2721 if (TargetTriple.isX32()) {
2722 LibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2723 TripleAliases.append(begin(X32Triples), end(X32Triples));
2724 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2725 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2726 } else {
2727 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2728 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2729 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2730 BiarchTripleAliases.append(begin(X32Triples), end(X32Triples));
2731 }
2732 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2733 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples));
2734 break;
2735 case llvm::Triple::x86:
2736 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2737 // MCU toolchain is 32 bit only and its triple alias is TargetTriple
2738 // itself, which will be appended below.
2739 if (!TargetTriple.isOSIAMCU()) {
2740 TripleAliases.append(begin(X86Triples), end(X86Triples));
2741 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2742 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2743 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2744 BiarchTripleAliases.append(begin(X32Triples), end(X32Triples));
2745 }
2746 break;
2747 // TODO: Handle loongarch32.
2748 case llvm::Triple::loongarch64:
2749 LibDirs.append(begin(LoongArch64LibDirs), end(LoongArch64LibDirs));
2750 TripleAliases.append(begin(LoongArch64Triples), end(LoongArch64Triples));
2751 break;
2752 case llvm::Triple::m68k:
2753 LibDirs.append(begin(M68kLibDirs), end(M68kLibDirs));
2754 TripleAliases.append(begin(M68kTriples), end(M68kTriples));
2755 break;
2756 case llvm::Triple::mips:
2757 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2758 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2759 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2760 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2761 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2762 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2763 break;
2764 case llvm::Triple::mipsel:
2765 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2766 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2767 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2768 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2769 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2770 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2771 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2772 break;
2773 case llvm::Triple::mips64:
2774 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2775 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2776 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2777 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2778 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2779 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2780 break;
2781 case llvm::Triple::mips64el:
2782 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2783 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2784 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2785 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2786 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2787 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2788 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2789 break;
2790 case llvm::Triple::msp430:
2791 LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs));
2792 TripleAliases.append(begin(MSP430Triples), end(MSP430Triples));
2793 break;
2794 case llvm::Triple::ppc:
2795 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2796 TripleAliases.append(begin(PPCTriples), end(PPCTriples));
2797 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2798 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2799 break;
2800 case llvm::Triple::ppcle:
2801 LibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs));
2802 TripleAliases.append(begin(PPCLETriples), end(PPCLETriples));
2803 BiarchLibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
2804 BiarchTripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
2805 break;
2806 case llvm::Triple::ppc64:
2807 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2808 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2809 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2810 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples));
2811 break;
2812 case llvm::Triple::ppc64le:
2813 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
2814 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
2815 BiarchLibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs));
2816 BiarchTripleAliases.append(begin(PPCLETriples), end(PPCLETriples));
2817 break;
2818 case llvm::Triple::riscv32:
2819 LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2820 TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
2821 BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
2822 BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
2823 break;
2824 case llvm::Triple::riscv64:
2825 LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
2826 TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
2827 BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2828 BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
2829 break;
2830 case llvm::Triple::sparc:
2831 case llvm::Triple::sparcel:
2832 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2833 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2834 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2835 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2836 break;
2837 case llvm::Triple::sparcv9:
2838 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2839 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2840 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2841 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2842 break;
2843 case llvm::Triple::systemz:
2844 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs));
2845 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples));
2846 break;
2847 default:
2848 // By default, just rely on the standard lib directories and the original
2849 // triple.
2850 break;
2851 }
2852
2853 // Also include the multiarch variant if it's different.
2854 if (TargetTriple.str() != BiarchTriple.str())
2855 BiarchTripleAliases.push_back(BiarchTriple.str());
2856 }
2857
ScanGCCForMultilibs(const llvm::Triple & TargetTriple,const ArgList & Args,StringRef Path,bool NeedsBiarchSuffix)2858 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2859 const llvm::Triple &TargetTriple, const ArgList &Args,
2860 StringRef Path, bool NeedsBiarchSuffix) {
2861 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2862 DetectedMultilibs Detected;
2863
2864 // Android standalone toolchain could have multilibs for ARM and Thumb.
2865 // Debian mips multilibs behave more like the rest of the biarch ones,
2866 // so handle them there
2867 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) {
2868 // It should also work without multilibs in a simplified toolchain.
2869 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected);
2870 } else if (TargetTriple.isCSKY()) {
2871 findCSKYMultilibs(D, TargetTriple, Path, Args, Detected);
2872 } else if (TargetTriple.isMIPS()) {
2873 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected))
2874 return false;
2875 } else if (TargetTriple.isRISCV()) {
2876 findRISCVMultilibs(D, TargetTriple, Path, Args, Detected);
2877 } else if (isMSP430(TargetArch)) {
2878 findMSP430Multilibs(D, TargetTriple, Path, Args, Detected);
2879 } else if (TargetArch == llvm::Triple::avr) {
2880 // AVR has no multilibs.
2881 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2882 NeedsBiarchSuffix, Detected)) {
2883 return false;
2884 }
2885
2886 Multilibs = Detected.Multilibs;
2887 SelectedMultilib = Detected.SelectedMultilibs.empty()
2888 ? Multilib()
2889 : Detected.SelectedMultilibs.back();
2890 BiarchSibling = Detected.BiarchSibling;
2891
2892 return true;
2893 }
2894
ScanLibDirForGCCTriple(const llvm::Triple & TargetTriple,const ArgList & Args,const std::string & LibDir,StringRef CandidateTriple,bool NeedsBiarchSuffix,bool GCCDirExists,bool GCCCrossDirExists)2895 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2896 const llvm::Triple &TargetTriple, const ArgList &Args,
2897 const std::string &LibDir, StringRef CandidateTriple,
2898 bool NeedsBiarchSuffix, bool GCCDirExists, bool GCCCrossDirExists) {
2899 // Locations relative to the system lib directory where GCC's triple-specific
2900 // directories might reside.
2901 struct GCCLibSuffix {
2902 // Path from system lib directory to GCC triple-specific directory.
2903 std::string LibSuffix;
2904 // Path from GCC triple-specific directory back to system lib directory.
2905 // This is one '..' component per component in LibSuffix.
2906 StringRef ReversePath;
2907 // Whether this library suffix is relevant for the triple.
2908 bool Active;
2909 } Suffixes[] = {
2910 // This is the normal place.
2911 {"gcc/" + CandidateTriple.str(), "../..", GCCDirExists},
2912
2913 // Debian puts cross-compilers in gcc-cross.
2914 {"gcc-cross/" + CandidateTriple.str(), "../..", GCCCrossDirExists},
2915
2916 // The Freescale PPC SDK has the gcc libraries in
2917 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2918 // this on Freescale triples, though, since some systems put a *lot* of
2919 // files in that location, not just GCC installation data.
2920 {CandidateTriple.str(), "..",
2921 TargetTriple.getVendor() == llvm::Triple::Freescale ||
2922 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}};
2923
2924 for (auto &Suffix : Suffixes) {
2925 if (!Suffix.Active)
2926 continue;
2927
2928 StringRef LibSuffix = Suffix.LibSuffix;
2929 std::error_code EC;
2930 for (llvm::vfs::directory_iterator
2931 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC),
2932 LE;
2933 !EC && LI != LE; LI = LI.increment(EC)) {
2934 StringRef VersionText = llvm::sys::path::filename(LI->path());
2935 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2936 if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2937 if (!CandidateGCCInstallPaths.insert(std::string(LI->path())).second)
2938 continue; // Saw this path before; no need to look at it again.
2939 if (CandidateVersion.isOlderThan(4, 1, 1))
2940 continue;
2941 if (CandidateVersion <= Version)
2942 continue;
2943
2944 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(),
2945 NeedsBiarchSuffix))
2946 continue;
2947
2948 Version = CandidateVersion;
2949 GCCTriple.setTriple(CandidateTriple);
2950 // FIXME: We hack together the directory name here instead of
2951 // using LI to ensure stable path separators across Windows and
2952 // Linux.
2953 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2954 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str();
2955 IsValid = true;
2956 }
2957 }
2958 }
2959
ScanGentooConfigs(const llvm::Triple & TargetTriple,const ArgList & Args,const SmallVectorImpl<StringRef> & CandidateTriples,const SmallVectorImpl<StringRef> & CandidateBiarchTriples)2960 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs(
2961 const llvm::Triple &TargetTriple, const ArgList &Args,
2962 const SmallVectorImpl<StringRef> &CandidateTriples,
2963 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) {
2964 if (!D.getVFS().exists(concat(D.SysRoot, GentooConfigDir)))
2965 return false;
2966
2967 for (StringRef CandidateTriple : CandidateTriples) {
2968 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
2969 return true;
2970 }
2971
2972 for (StringRef CandidateTriple : CandidateBiarchTriples) {
2973 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true))
2974 return true;
2975 }
2976 return false;
2977 }
2978
ScanGentooGccConfig(const llvm::Triple & TargetTriple,const ArgList & Args,StringRef CandidateTriple,bool NeedsBiarchSuffix)2979 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2980 const llvm::Triple &TargetTriple, const ArgList &Args,
2981 StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2982 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2983 D.getVFS().getBufferForFile(concat(D.SysRoot, GentooConfigDir,
2984 "/config-" + CandidateTriple.str()));
2985 if (File) {
2986 SmallVector<StringRef, 2> Lines;
2987 File.get()->getBuffer().split(Lines, "\n");
2988 for (StringRef Line : Lines) {
2989 Line = Line.trim();
2990 // CURRENT=triple-version
2991 if (!Line.consume_front("CURRENT="))
2992 continue;
2993 // Process the config file pointed to by CURRENT.
2994 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile =
2995 D.getVFS().getBufferForFile(
2996 concat(D.SysRoot, GentooConfigDir, "/" + Line));
2997 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-');
2998 // List of paths to scan for libraries.
2999 SmallVector<StringRef, 4> GentooScanPaths;
3000 // Scan the Config file to find installed GCC libraries path.
3001 // Typical content of the GCC config file:
3002 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/
3003 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32"
3004 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man"
3005 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info"
3006 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4"
3007 // We are looking for the paths listed in LDPATH=... .
3008 if (ConfigFile) {
3009 SmallVector<StringRef, 2> ConfigLines;
3010 ConfigFile.get()->getBuffer().split(ConfigLines, "\n");
3011 for (StringRef ConfLine : ConfigLines) {
3012 ConfLine = ConfLine.trim();
3013 if (ConfLine.consume_front("LDPATH=")) {
3014 // Drop '"' from front and back if present.
3015 ConfLine.consume_back("\"");
3016 ConfLine.consume_front("\"");
3017 // Get all paths sperated by ':'
3018 ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false);
3019 }
3020 }
3021 }
3022 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}.
3023 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/"
3024 + ActiveVersion.second.str();
3025 GentooScanPaths.push_back(StringRef(basePath));
3026
3027 // Scan all paths for GCC libraries.
3028 for (const auto &GentooScanPath : GentooScanPaths) {
3029 std::string GentooPath = concat(D.SysRoot, GentooScanPath);
3030 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) {
3031 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath,
3032 NeedsBiarchSuffix))
3033 continue;
3034
3035 Version = GCCVersion::Parse(ActiveVersion.second);
3036 GCCInstallPath = GentooPath;
3037 GCCParentLibPath = GentooPath + std::string("/../../..");
3038 GCCTriple.setTriple(ActiveVersion.first);
3039 IsValid = true;
3040 return true;
3041 }
3042 }
3043 }
3044 }
3045
3046 return false;
3047 }
3048
Generic_GCC(const Driver & D,const llvm::Triple & Triple,const ArgList & Args)3049 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
3050 const ArgList &Args)
3051 : ToolChain(D, Triple, Args), GCCInstallation(D),
3052 CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args) {
3053 getProgramPaths().push_back(getDriver().getInstalledDir());
3054 if (getDriver().getInstalledDir() != getDriver().Dir)
3055 getProgramPaths().push_back(getDriver().Dir);
3056 }
3057
~Generic_GCC()3058 Generic_GCC::~Generic_GCC() {}
3059
getTool(Action::ActionClass AC) const3060 Tool *Generic_GCC::getTool(Action::ActionClass AC) const {
3061 switch (AC) {
3062 case Action::PreprocessJobClass:
3063 if (!Preprocess)
3064 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this));
3065 return Preprocess.get();
3066 case Action::CompileJobClass:
3067 if (!Compile)
3068 Compile.reset(new tools::gcc::Compiler(*this));
3069 return Compile.get();
3070 default:
3071 return ToolChain::getTool(AC);
3072 }
3073 }
3074
buildAssembler() const3075 Tool *Generic_GCC::buildAssembler() const {
3076 return new tools::gnutools::Assembler(*this);
3077 }
3078
buildLinker() const3079 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
3080
printVerboseInfo(raw_ostream & OS) const3081 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
3082 // Print the information about how we detected the GCC installation.
3083 GCCInstallation.print(OS);
3084 CudaInstallation->print(OS);
3085 RocmInstallation->print(OS);
3086 }
3087
3088 ToolChain::UnwindTableLevel
getDefaultUnwindTableLevel(const ArgList & Args) const3089 Generic_GCC::getDefaultUnwindTableLevel(const ArgList &Args) const {
3090 switch (getArch()) {
3091 case llvm::Triple::aarch64:
3092 case llvm::Triple::aarch64_be:
3093 case llvm::Triple::ppc:
3094 case llvm::Triple::ppcle:
3095 case llvm::Triple::ppc64:
3096 case llvm::Triple::ppc64le:
3097 case llvm::Triple::riscv32:
3098 case llvm::Triple::riscv64:
3099 case llvm::Triple::x86:
3100 case llvm::Triple::x86_64:
3101 return UnwindTableLevel::Asynchronous;
3102 default:
3103 return UnwindTableLevel::None;
3104 }
3105 }
3106
isPICDefault() const3107 bool Generic_GCC::isPICDefault() const {
3108 switch (getArch()) {
3109 case llvm::Triple::x86_64:
3110 return getTriple().isOSWindows();
3111 case llvm::Triple::mips64:
3112 case llvm::Triple::mips64el:
3113 return true;
3114 default:
3115 return false;
3116 }
3117 }
3118
isPIEDefault(const llvm::opt::ArgList & Args) const3119 bool Generic_GCC::isPIEDefault(const llvm::opt::ArgList &Args) const {
3120 return false;
3121 }
3122
isPICDefaultForced() const3123 bool Generic_GCC::isPICDefaultForced() const {
3124 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
3125 }
3126
IsIntegratedAssemblerDefault() const3127 bool Generic_GCC::IsIntegratedAssemblerDefault() const {
3128 switch (getTriple().getArch()) {
3129 case llvm::Triple::nvptx:
3130 case llvm::Triple::nvptx64:
3131 case llvm::Triple::xcore:
3132 return false;
3133 default:
3134 return true;
3135 }
3136 }
3137
PushPPaths(ToolChain::path_list & PPaths)3138 void Generic_GCC::PushPPaths(ToolChain::path_list &PPaths) {
3139 // Cross-compiling binutils and GCC installations (vanilla and openSUSE at
3140 // least) put various tools in a triple-prefixed directory off of the parent
3141 // of the GCC installation. We use the GCC triple here to ensure that we end
3142 // up with tools that support the same amount of cross compiling as the
3143 // detected GCC installation. For example, if we find a GCC installation
3144 // targeting x86_64, but it is a bi-arch GCC installation, it can also be
3145 // used to target i386.
3146 if (GCCInstallation.isValid()) {
3147 PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" +
3148 GCCInstallation.getTriple().str() + "/bin")
3149 .str());
3150 }
3151 }
3152
AddMultilibPaths(const Driver & D,const std::string & SysRoot,const std::string & OSLibDir,const std::string & MultiarchTriple,path_list & Paths)3153 void Generic_GCC::AddMultilibPaths(const Driver &D,
3154 const std::string &SysRoot,
3155 const std::string &OSLibDir,
3156 const std::string &MultiarchTriple,
3157 path_list &Paths) {
3158 // Add the multilib suffixed paths where they are available.
3159 if (GCCInstallation.isValid()) {
3160 assert(!SelectedMultilibs.empty());
3161 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3162 const std::string &LibPath =
3163 std::string(GCCInstallation.getParentLibPath());
3164
3165 // Sourcery CodeBench MIPS toolchain holds some libraries under
3166 // a biarch-like suffix of the GCC installation.
3167 if (const auto &PathsCallback = Multilibs.filePathsCallback())
3168 for (const auto &Path : PathsCallback(SelectedMultilibs.back()))
3169 addPathIfExists(D, GCCInstallation.getInstallPath() + Path, Paths);
3170
3171 // Add lib/gcc/$triple/$version, with an optional /multilib suffix.
3172 addPathIfExists(D,
3173 GCCInstallation.getInstallPath() +
3174 SelectedMultilibs.back().gccSuffix(),
3175 Paths);
3176
3177 // Add lib/gcc/$triple/$libdir
3178 // For GCC built with --enable-version-specific-runtime-libs.
3179 addPathIfExists(D, GCCInstallation.getInstallPath() + "/../" + OSLibDir,
3180 Paths);
3181
3182 // GCC cross compiling toolchains will install target libraries which ship
3183 // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as
3184 // any part of the GCC installation in
3185 // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat
3186 // debatable, but is the reality today. We need to search this tree even
3187 // when we have a sysroot somewhere else. It is the responsibility of
3188 // whomever is doing the cross build targeting a sysroot using a GCC
3189 // installation that is *not* within the system root to ensure two things:
3190 //
3191 // 1) Any DSOs that are linked in from this tree or from the install path
3192 // above must be present on the system root and found via an
3193 // appropriate rpath.
3194 // 2) There must not be libraries installed into
3195 // <prefix>/<triple>/<libdir> unless they should be preferred over
3196 // those within the system root.
3197 //
3198 // Note that this matches the GCC behavior. See the below comment for where
3199 // Clang diverges from GCC's behavior.
3200 addPathIfExists(D,
3201 LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir +
3202 SelectedMultilibs.back().osSuffix(),
3203 Paths);
3204
3205 // If the GCC installation we found is inside of the sysroot, we want to
3206 // prefer libraries installed in the parent prefix of the GCC installation.
3207 // It is important to *not* use these paths when the GCC installation is
3208 // outside of the system root as that can pick up unintended libraries.
3209 // This usually happens when there is an external cross compiler on the
3210 // host system, and a more minimal sysroot available that is the target of
3211 // the cross. Note that GCC does include some of these directories in some
3212 // configurations but this seems somewhere between questionable and simply
3213 // a bug.
3214 if (StringRef(LibPath).starts_with(SysRoot))
3215 addPathIfExists(D, LibPath + "/../" + OSLibDir, Paths);
3216 }
3217 }
3218
AddMultiarchPaths(const Driver & D,const std::string & SysRoot,const std::string & OSLibDir,path_list & Paths)3219 void Generic_GCC::AddMultiarchPaths(const Driver &D,
3220 const std::string &SysRoot,
3221 const std::string &OSLibDir,
3222 path_list &Paths) {
3223 if (GCCInstallation.isValid()) {
3224 const std::string &LibPath =
3225 std::string(GCCInstallation.getParentLibPath());
3226 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3227 const Multilib &Multilib = GCCInstallation.getMultilib();
3228 addPathIfExists(
3229 D, LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(),
3230 Paths);
3231 }
3232 }
3233
AddMultilibIncludeArgs(const ArgList & DriverArgs,ArgStringList & CC1Args) const3234 void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs,
3235 ArgStringList &CC1Args) const {
3236 // Add include directories specific to the selected multilib set and multilib.
3237 if (!GCCInstallation.isValid())
3238 return;
3239 // gcc TOOL_INCLUDE_DIR.
3240 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3241 std::string LibPath(GCCInstallation.getParentLibPath());
3242 addSystemInclude(DriverArgs, CC1Args,
3243 Twine(LibPath) + "/../" + GCCTriple.str() + "/include");
3244
3245 const auto &Callback = Multilibs.includeDirsCallback();
3246 if (Callback) {
3247 for (const auto &Path : Callback(GCCInstallation.getMultilib()))
3248 addExternCSystemIncludeIfExists(DriverArgs, CC1Args,
3249 GCCInstallation.getInstallPath() + Path);
3250 }
3251 }
3252
AddClangCXXStdlibIncludeArgs(const ArgList & DriverArgs,ArgStringList & CC1Args) const3253 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
3254 ArgStringList &CC1Args) const {
3255 if (DriverArgs.hasArg(options::OPT_nostdinc, options::OPT_nostdincxx,
3256 options::OPT_nostdlibinc))
3257 return;
3258
3259 switch (GetCXXStdlibType(DriverArgs)) {
3260 case ToolChain::CST_Libcxx:
3261 addLibCxxIncludePaths(DriverArgs, CC1Args);
3262 break;
3263
3264 case ToolChain::CST_Libstdcxx:
3265 addLibStdCxxIncludePaths(DriverArgs, CC1Args);
3266 break;
3267 }
3268 }
3269
3270 void
addLibCxxIncludePaths(const llvm::opt::ArgList & DriverArgs,llvm::opt::ArgStringList & CC1Args) const3271 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3272 llvm::opt::ArgStringList &CC1Args) const {
3273 const Driver &D = getDriver();
3274 std::string SysRoot = computeSysRoot();
3275 if (SysRoot.empty())
3276 SysRoot = llvm::sys::path::get_separator();
3277
3278 auto AddIncludePath = [&](StringRef Path, bool TargetDirRequired = false) {
3279 std::string Version = detectLibcxxVersion(Path);
3280 if (Version.empty())
3281 return false;
3282
3283 // First add the per-target include path if it exists.
3284 bool TargetDirExists = false;
3285 std::optional<std::string> TargetIncludeDir = getTargetSubDirPath(Path);
3286 if (TargetIncludeDir) {
3287 SmallString<128> TargetDir(*TargetIncludeDir);
3288 llvm::sys::path::append(TargetDir, "c++", Version);
3289 if (D.getVFS().exists(TargetDir)) {
3290 addSystemInclude(DriverArgs, CC1Args, TargetDir);
3291 TargetDirExists = true;
3292 }
3293 }
3294 if (TargetDirRequired && !TargetDirExists)
3295 return false;
3296
3297 // Second add the generic one.
3298 SmallString<128> GenericDir(Path);
3299 llvm::sys::path::append(GenericDir, "c++", Version);
3300 addSystemInclude(DriverArgs, CC1Args, GenericDir);
3301 return true;
3302 };
3303
3304 // Android only uses the libc++ headers installed alongside the toolchain if
3305 // they contain an Android-specific target include path, otherwise they're
3306 // incompatible with the NDK libraries.
3307 SmallString<128> DriverIncludeDir(getDriver().Dir);
3308 llvm::sys::path::append(DriverIncludeDir, "..", "include");
3309 if (AddIncludePath(DriverIncludeDir,
3310 /*TargetDirRequired=*/getTriple().isAndroid()))
3311 return;
3312 // If this is a development, non-installed, clang, libcxx will
3313 // not be found at ../include/c++ but it likely to be found at
3314 // one of the following two locations:
3315 SmallString<128> UsrLocalIncludeDir(SysRoot);
3316 llvm::sys::path::append(UsrLocalIncludeDir, "usr", "local", "include");
3317 if (AddIncludePath(UsrLocalIncludeDir))
3318 return;
3319 SmallString<128> UsrIncludeDir(SysRoot);
3320 llvm::sys::path::append(UsrIncludeDir, "usr", "include");
3321 if (AddIncludePath(UsrIncludeDir))
3322 return;
3323 }
3324
addLibStdCXXIncludePaths(Twine IncludeDir,StringRef Triple,Twine IncludeSuffix,const llvm::opt::ArgList & DriverArgs,llvm::opt::ArgStringList & CC1Args,bool DetectDebian) const3325 bool Generic_GCC::addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple,
3326 Twine IncludeSuffix,
3327 const llvm::opt::ArgList &DriverArgs,
3328 llvm::opt::ArgStringList &CC1Args,
3329 bool DetectDebian) const {
3330 if (!getVFS().exists(IncludeDir))
3331 return false;
3332
3333 // Debian native gcc uses g++-multiarch-incdir.diff which uses
3334 // include/x86_64-linux-gnu/c++/10$IncludeSuffix instead of
3335 // include/c++/10/x86_64-linux-gnu$IncludeSuffix.
3336 std::string Dir = IncludeDir.str();
3337 StringRef Include =
3338 llvm::sys::path::parent_path(llvm::sys::path::parent_path(Dir));
3339 std::string Path =
3340 (Include + "/" + Triple + Dir.substr(Include.size()) + IncludeSuffix)
3341 .str();
3342 if (DetectDebian && !getVFS().exists(Path))
3343 return false;
3344
3345 // GPLUSPLUS_INCLUDE_DIR
3346 addSystemInclude(DriverArgs, CC1Args, IncludeDir);
3347 // GPLUSPLUS_TOOL_INCLUDE_DIR. If Triple is not empty, add a target-dependent
3348 // include directory.
3349 if (DetectDebian)
3350 addSystemInclude(DriverArgs, CC1Args, Path);
3351 else if (!Triple.empty())
3352 addSystemInclude(DriverArgs, CC1Args,
3353 IncludeDir + "/" + Triple + IncludeSuffix);
3354 // GPLUSPLUS_BACKWARD_INCLUDE_DIR
3355 addSystemInclude(DriverArgs, CC1Args, IncludeDir + "/backward");
3356 return true;
3357 }
3358
addGCCLibStdCxxIncludePaths(const llvm::opt::ArgList & DriverArgs,llvm::opt::ArgStringList & CC1Args,StringRef DebianMultiarch) const3359 bool Generic_GCC::addGCCLibStdCxxIncludePaths(
3360 const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args,
3361 StringRef DebianMultiarch) const {
3362 assert(GCCInstallation.isValid());
3363
3364 // By default, look for the C++ headers in an include directory adjacent to
3365 // the lib directory of the GCC installation. Note that this is expect to be
3366 // equivalent to '/usr/include/c++/X.Y' in almost all cases.
3367 StringRef LibDir = GCCInstallation.getParentLibPath();
3368 StringRef InstallDir = GCCInstallation.getInstallPath();
3369 StringRef TripleStr = GCCInstallation.getTriple().str();
3370 const Multilib &Multilib = GCCInstallation.getMultilib();
3371 const GCCVersion &Version = GCCInstallation.getVersion();
3372
3373 // Try /../$triple/include/c++/$version (gcc --print-multiarch is not empty).
3374 if (addLibStdCXXIncludePaths(
3375 LibDir.str() + "/../" + TripleStr + "/include/c++/" + Version.Text,
3376 TripleStr, Multilib.includeSuffix(), DriverArgs, CC1Args))
3377 return true;
3378
3379 // Try /gcc/$triple/$version/include/c++/ (gcc --print-multiarch is not
3380 // empty). Like above but for GCC built with
3381 // --enable-version-specific-runtime-libs.
3382 if (addLibStdCXXIncludePaths(LibDir.str() + "/gcc/" + TripleStr + "/" +
3383 Version.Text + "/include/c++/",
3384 TripleStr, Multilib.includeSuffix(), DriverArgs,
3385 CC1Args))
3386 return true;
3387
3388 // Detect Debian g++-multiarch-incdir.diff.
3389 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text,
3390 DebianMultiarch, Multilib.includeSuffix(),
3391 DriverArgs, CC1Args, /*Debian=*/true))
3392 return true;
3393
3394 // Try /../include/c++/$version (gcc --print-multiarch is empty).
3395 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text,
3396 TripleStr, Multilib.includeSuffix(), DriverArgs,
3397 CC1Args))
3398 return true;
3399
3400 // Otherwise, fall back on a bunch of options which don't use multiarch
3401 // layouts for simplicity.
3402 const std::string LibStdCXXIncludePathCandidates[] = {
3403 // Gentoo is weird and places its headers inside the GCC install,
3404 // so if the first attempt to find the headers fails, try these patterns.
3405 InstallDir.str() + "/include/g++-v" + Version.Text,
3406 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." +
3407 Version.MinorStr,
3408 InstallDir.str() + "/include/g++-v" + Version.MajorStr,
3409 };
3410
3411 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) {
3412 if (addLibStdCXXIncludePaths(IncludePath, TripleStr,
3413 Multilib.includeSuffix(), DriverArgs, CC1Args))
3414 return true;
3415 }
3416 return false;
3417 }
3418
3419 void
addLibStdCxxIncludePaths(const llvm::opt::ArgList & DriverArgs,llvm::opt::ArgStringList & CC1Args) const3420 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3421 llvm::opt::ArgStringList &CC1Args) const {
3422 if (GCCInstallation.isValid()) {
3423 addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args,
3424 GCCInstallation.getTriple().str());
3425 }
3426 }
3427
3428 llvm::opt::DerivedArgList *
TranslateArgs(const llvm::opt::DerivedArgList & Args,StringRef,Action::OffloadKind DeviceOffloadKind) const3429 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef,
3430 Action::OffloadKind DeviceOffloadKind) const {
3431
3432 // If this tool chain is used for an OpenMP offloading device we have to make
3433 // sure we always generate a shared library regardless of the commands the
3434 // user passed to the host. This is required because the runtime library
3435 // is required to load the device image dynamically at run time.
3436 if (DeviceOffloadKind == Action::OFK_OpenMP) {
3437 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
3438 const OptTable &Opts = getDriver().getOpts();
3439
3440 // Request the shared library. Given that these options are decided
3441 // implicitly, they do not refer to any base argument.
3442 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared));
3443 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC));
3444
3445 // Filter all the arguments we don't care passing to the offloading
3446 // toolchain as they can mess up with the creation of a shared library.
3447 for (auto *A : Args) {
3448 switch ((options::ID)A->getOption().getID()) {
3449 default:
3450 DAL->append(A);
3451 break;
3452 case options::OPT_shared:
3453 case options::OPT_dynamic:
3454 case options::OPT_static:
3455 case options::OPT_fPIC:
3456 case options::OPT_fno_PIC:
3457 case options::OPT_fpic:
3458 case options::OPT_fno_pic:
3459 case options::OPT_fPIE:
3460 case options::OPT_fno_PIE:
3461 case options::OPT_fpie:
3462 case options::OPT_fno_pie:
3463 break;
3464 }
3465 }
3466 return DAL;
3467 }
3468 return nullptr;
3469 }
3470
anchor()3471 void Generic_ELF::anchor() {}
3472
addClangTargetOptions(const ArgList & DriverArgs,ArgStringList & CC1Args,Action::OffloadKind) const3473 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
3474 ArgStringList &CC1Args,
3475 Action::OffloadKind) const {
3476 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
3477 options::OPT_fno_use_init_array, true))
3478 CC1Args.push_back("-fno-use-init-array");
3479 }
3480