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/Mips.h"
13 #include "Arch/PPC.h"
14 #include "Arch/RISCV.h"
15 #include "Arch/Sparc.h"
16 #include "Arch/SystemZ.h"
17 #include "CommonArgs.h"
18 #include "Linux.h"
19 #include "clang/Config/config.h" // for GCC_INSTALL_PREFIX
20 #include "clang/Driver/Compilation.h"
21 #include "clang/Driver/Driver.h"
22 #include "clang/Driver/DriverDiagnostic.h"
23 #include "clang/Driver/Options.h"
24 #include "clang/Driver/Tool.h"
25 #include "clang/Driver/ToolChain.h"
26 #include "llvm/Option/ArgList.h"
27 #include "llvm/Support/CodeGen.h"
28 #include "llvm/Support/Path.h"
29 #include "llvm/Support/TargetParser.h"
30 #include "llvm/Support/VirtualFileSystem.h"
31 #include <system_error>
32
33 using namespace clang::driver;
34 using namespace clang::driver::toolchains;
35 using namespace clang;
36 using namespace llvm::opt;
37
38 using tools::addMultilibFlag;
39 using tools::addPathIfExists;
40
forwardToGCC(const Option & O)41 static bool forwardToGCC(const Option &O) {
42 // LinkerInput options have been forwarded. Don't duplicate.
43 if (O.hasFlag(options::LinkerInput))
44 return false;
45 return O.matches(options::OPT_Link_Group) || O.hasFlag(options::LinkOption);
46 }
47
48 // Switch CPU names not recognized by GNU assembler to a close CPU that it does
49 // recognize, instead of a lower march from being picked in the absence of a cpu
50 // flag.
normalizeCPUNamesForAssembler(const ArgList & Args,ArgStringList & CmdArgs)51 static void normalizeCPUNamesForAssembler(const ArgList &Args,
52 ArgStringList &CmdArgs) {
53 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
54 StringRef CPUArg(A->getValue());
55 if (CPUArg.equals_insensitive("krait"))
56 CmdArgs.push_back("-mcpu=cortex-a15");
57 else if (CPUArg.equals_insensitive("kryo"))
58 CmdArgs.push_back("-mcpu=cortex-a57");
59 else
60 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
61 }
62 }
63
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const64 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA,
65 const InputInfo &Output,
66 const InputInfoList &Inputs,
67 const ArgList &Args,
68 const char *LinkingOutput) const {
69 const Driver &D = getToolChain().getDriver();
70 ArgStringList CmdArgs;
71
72 for (const auto &A : Args) {
73 if (forwardToGCC(A->getOption())) {
74 // It is unfortunate that we have to claim here, as this means
75 // we will basically never report anything interesting for
76 // platforms using a generic gcc, even if we are just using gcc
77 // to get to the assembler.
78 A->claim();
79
80 A->render(Args, CmdArgs);
81 }
82 }
83
84 RenderExtraToolArgs(JA, CmdArgs);
85
86 // If using a driver driver, force the arch.
87 if (getToolChain().getTriple().isOSDarwin()) {
88 CmdArgs.push_back("-arch");
89 CmdArgs.push_back(
90 Args.MakeArgString(getToolChain().getDefaultUniversalArchName()));
91 }
92
93 // Try to force gcc to match the tool chain we want, if we recognize
94 // the arch.
95 //
96 // FIXME: The triple class should directly provide the information we want
97 // here.
98 switch (getToolChain().getArch()) {
99 default:
100 break;
101 case llvm::Triple::x86:
102 case llvm::Triple::ppc:
103 case llvm::Triple::ppcle:
104 CmdArgs.push_back("-m32");
105 break;
106 case llvm::Triple::x86_64:
107 case llvm::Triple::ppc64:
108 case llvm::Triple::ppc64le:
109 CmdArgs.push_back("-m64");
110 break;
111 case llvm::Triple::sparcel:
112 CmdArgs.push_back("-EL");
113 break;
114 }
115
116 if (Output.isFilename()) {
117 CmdArgs.push_back("-o");
118 CmdArgs.push_back(Output.getFilename());
119 } else {
120 assert(Output.isNothing() && "Unexpected output");
121 CmdArgs.push_back("-fsyntax-only");
122 }
123
124 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
125
126 // Only pass -x if gcc will understand it; otherwise hope gcc
127 // understands the suffix correctly. The main use case this would go
128 // wrong in is for linker inputs if they happened to have an odd
129 // suffix; really the only way to get this to happen is a command
130 // like '-x foobar a.c' which will treat a.c like a linker input.
131 //
132 // FIXME: For the linker case specifically, can we safely convert
133 // inputs into '-Wl,' options?
134 for (const auto &II : Inputs) {
135 // Don't try to pass LLVM or AST inputs to a generic gcc.
136 if (types::isLLVMIR(II.getType()))
137 D.Diag(clang::diag::err_drv_no_linker_llvm_support)
138 << getToolChain().getTripleString();
139 else if (II.getType() == types::TY_AST)
140 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString();
141 else if (II.getType() == types::TY_ModuleFile)
142 D.Diag(diag::err_drv_no_module_support)
143 << getToolChain().getTripleString();
144
145 if (types::canTypeBeUserSpecified(II.getType())) {
146 CmdArgs.push_back("-x");
147 CmdArgs.push_back(types::getTypeName(II.getType()));
148 }
149
150 if (II.isFilename())
151 CmdArgs.push_back(II.getFilename());
152 else {
153 const Arg &A = II.getInputArg();
154
155 // Reverse translate some rewritten options.
156 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) {
157 CmdArgs.push_back("-lstdc++");
158 continue;
159 }
160
161 // Don't render as input, we need gcc to do the translations.
162 A.render(Args, CmdArgs);
163 }
164 }
165
166 const std::string &customGCCName = D.getCCCGenericGCCName();
167 const char *GCCName;
168 if (!customGCCName.empty())
169 GCCName = customGCCName.c_str();
170 else if (D.CCCIsCXX()) {
171 GCCName = "g++";
172 } else
173 GCCName = "gcc";
174
175 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
176 C.addCommand(std::make_unique<Command>(JA, *this,
177 ResponseFileSupport::AtFileCurCP(),
178 Exec, CmdArgs, Inputs, Output));
179 }
180
RenderExtraToolArgs(const JobAction & JA,ArgStringList & CmdArgs) const181 void tools::gcc::Preprocessor::RenderExtraToolArgs(
182 const JobAction &JA, ArgStringList &CmdArgs) const {
183 CmdArgs.push_back("-E");
184 }
185
RenderExtraToolArgs(const JobAction & JA,ArgStringList & CmdArgs) const186 void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA,
187 ArgStringList &CmdArgs) const {
188 const Driver &D = getToolChain().getDriver();
189
190 switch (JA.getType()) {
191 // If -flto, etc. are present then make sure not to force assembly output.
192 case types::TY_LLVM_IR:
193 case types::TY_LTO_IR:
194 case types::TY_LLVM_BC:
195 case types::TY_LTO_BC:
196 CmdArgs.push_back("-c");
197 break;
198 // We assume we've got an "integrated" assembler in that gcc will produce an
199 // object file itself.
200 case types::TY_Object:
201 CmdArgs.push_back("-c");
202 break;
203 case types::TY_PP_Asm:
204 CmdArgs.push_back("-S");
205 break;
206 case types::TY_Nothing:
207 CmdArgs.push_back("-fsyntax-only");
208 break;
209 default:
210 D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType());
211 }
212 }
213
RenderExtraToolArgs(const JobAction & JA,ArgStringList & CmdArgs) const214 void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA,
215 ArgStringList &CmdArgs) const {
216 // The types are (hopefully) good enough.
217 }
218
219 // On Arm the endianness of the output file is determined by the target and
220 // can be overridden by the pseudo-target flags '-mlittle-endian'/'-EL' and
221 // '-mbig-endian'/'-EB'. Unlike other targets the flag does not result in a
222 // normalized triple so we must handle the flag here.
isArmBigEndian(const llvm::Triple & Triple,const ArgList & Args)223 static bool isArmBigEndian(const llvm::Triple &Triple,
224 const ArgList &Args) {
225 bool IsBigEndian = false;
226 switch (Triple.getArch()) {
227 case llvm::Triple::armeb:
228 case llvm::Triple::thumbeb:
229 IsBigEndian = true;
230 LLVM_FALLTHROUGH;
231 case llvm::Triple::arm:
232 case llvm::Triple::thumb:
233 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
234 options::OPT_mbig_endian))
235 IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian);
236 break;
237 default:
238 break;
239 }
240 return IsBigEndian;
241 }
242
getLDMOption(const llvm::Triple & T,const ArgList & Args)243 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) {
244 switch (T.getArch()) {
245 case llvm::Triple::x86:
246 if (T.isOSIAMCU())
247 return "elf_iamcu";
248 return "elf_i386";
249 case llvm::Triple::aarch64:
250 return "aarch64linux";
251 case llvm::Triple::aarch64_be:
252 return "aarch64linuxb";
253 case llvm::Triple::arm:
254 case llvm::Triple::thumb:
255 case llvm::Triple::armeb:
256 case llvm::Triple::thumbeb:
257 return isArmBigEndian(T, Args) ? "armelfb_linux_eabi" : "armelf_linux_eabi";
258 case llvm::Triple::m68k:
259 return "m68kelf";
260 case llvm::Triple::ppc:
261 if (T.isOSLinux())
262 return "elf32ppclinux";
263 return "elf32ppc";
264 case llvm::Triple::ppcle:
265 if (T.isOSLinux())
266 return "elf32lppclinux";
267 return "elf32lppc";
268 case llvm::Triple::ppc64:
269 return "elf64ppc";
270 case llvm::Triple::ppc64le:
271 return "elf64lppc";
272 case llvm::Triple::riscv32:
273 return "elf32lriscv";
274 case llvm::Triple::riscv64:
275 return "elf64lriscv";
276 case llvm::Triple::sparc:
277 case llvm::Triple::sparcel:
278 return "elf32_sparc";
279 case llvm::Triple::sparcv9:
280 return "elf64_sparc";
281 case llvm::Triple::mips:
282 return "elf32btsmip";
283 case llvm::Triple::mipsel:
284 return "elf32ltsmip";
285 case llvm::Triple::mips64:
286 if (tools::mips::hasMipsAbiArg(Args, "n32") ||
287 T.getEnvironment() == llvm::Triple::GNUABIN32)
288 return "elf32btsmipn32";
289 return "elf64btsmip";
290 case llvm::Triple::mips64el:
291 if (tools::mips::hasMipsAbiArg(Args, "n32") ||
292 T.getEnvironment() == llvm::Triple::GNUABIN32)
293 return "elf32ltsmipn32";
294 return "elf64ltsmip";
295 case llvm::Triple::systemz:
296 return "elf64_s390";
297 case llvm::Triple::x86_64:
298 if (T.isX32())
299 return "elf32_x86_64";
300 return "elf_x86_64";
301 case llvm::Triple::ve:
302 return "elf64ve";
303 case llvm::Triple::csky:
304 return "cskyelf_linux";
305 default:
306 return nullptr;
307 }
308 }
309
getPIE(const ArgList & Args,const ToolChain & TC)310 static bool getPIE(const ArgList &Args, const ToolChain &TC) {
311 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_static) ||
312 Args.hasArg(options::OPT_r) || Args.hasArg(options::OPT_static_pie))
313 return false;
314
315 Arg *A = Args.getLastArg(options::OPT_pie, options::OPT_no_pie,
316 options::OPT_nopie);
317 if (!A)
318 return TC.isPIEDefault(Args);
319 return A->getOption().matches(options::OPT_pie);
320 }
321
getStaticPIE(const ArgList & Args,const ToolChain & TC)322 static bool getStaticPIE(const ArgList &Args, const ToolChain &TC) {
323 bool HasStaticPIE = Args.hasArg(options::OPT_static_pie);
324 // -no-pie is an alias for -nopie. So, handling -nopie takes care of
325 // -no-pie as well.
326 if (HasStaticPIE && Args.hasArg(options::OPT_nopie)) {
327 const Driver &D = TC.getDriver();
328 const llvm::opt::OptTable &Opts = D.getOpts();
329 const char *StaticPIEName = Opts.getOptionName(options::OPT_static_pie);
330 const char *NoPIEName = Opts.getOptionName(options::OPT_nopie);
331 D.Diag(diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName;
332 }
333 return HasStaticPIE;
334 }
335
getStatic(const ArgList & Args)336 static bool getStatic(const ArgList &Args) {
337 return Args.hasArg(options::OPT_static) &&
338 !Args.hasArg(options::OPT_static_pie);
339 }
340
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const341 void tools::gnutools::StaticLibTool::ConstructJob(
342 Compilation &C, const JobAction &JA, const InputInfo &Output,
343 const InputInfoList &Inputs, const ArgList &Args,
344 const char *LinkingOutput) const {
345 const Driver &D = getToolChain().getDriver();
346
347 // Silence warning for "clang -g foo.o -o foo"
348 Args.ClaimAllArgs(options::OPT_g_Group);
349 // and "clang -emit-llvm foo.o -o foo"
350 Args.ClaimAllArgs(options::OPT_emit_llvm);
351 // and for "clang -w foo.o -o foo". Other warning options are already
352 // handled somewhere else.
353 Args.ClaimAllArgs(options::OPT_w);
354 // Silence warnings when linking C code with a C++ '-stdlib' argument.
355 Args.ClaimAllArgs(options::OPT_stdlib_EQ);
356
357 // ar tool command "llvm-ar <options> <output_file> <input_files>".
358 ArgStringList CmdArgs;
359 // Create and insert file members with a deterministic index.
360 CmdArgs.push_back("rcsD");
361 CmdArgs.push_back(Output.getFilename());
362
363 for (const auto &II : Inputs) {
364 if (II.isFilename()) {
365 CmdArgs.push_back(II.getFilename());
366 }
367 }
368
369 // Delete old output archive file if it already exists before generating a new
370 // archive file.
371 auto OutputFileName = Output.getFilename();
372 if (Output.isFilename() && llvm::sys::fs::exists(OutputFileName)) {
373 if (std::error_code EC = llvm::sys::fs::remove(OutputFileName)) {
374 D.Diag(diag::err_drv_unable_to_remove_file) << EC.message();
375 return;
376 }
377 }
378
379 const char *Exec = Args.MakeArgString(getToolChain().GetStaticLibToolPath());
380 C.addCommand(std::make_unique<Command>(JA, *this,
381 ResponseFileSupport::AtFileCurCP(),
382 Exec, CmdArgs, Inputs, Output));
383 }
384
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const385 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
386 const InputInfo &Output,
387 const InputInfoList &Inputs,
388 const ArgList &Args,
389 const char *LinkingOutput) const {
390 // FIXME: The Linker class constructor takes a ToolChain and not a
391 // Generic_ELF, so the static_cast might return a reference to a invalid
392 // instance (see PR45061). Ideally, the Linker constructor needs to take a
393 // Generic_ELF instead.
394 const toolchains::Generic_ELF &ToolChain =
395 static_cast<const toolchains::Generic_ELF &>(getToolChain());
396 const Driver &D = ToolChain.getDriver();
397
398 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
399
400 const llvm::Triple::ArchType Arch = ToolChain.getArch();
401 const bool isAndroid = ToolChain.getTriple().isAndroid();
402 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
403 const bool IsVE = ToolChain.getTriple().isVE();
404 const bool IsPIE = getPIE(Args, ToolChain);
405 const bool IsStaticPIE = getStaticPIE(Args, ToolChain);
406 const bool IsStatic = getStatic(Args);
407 const bool HasCRTBeginEndFiles =
408 ToolChain.getTriple().hasEnvironment() ||
409 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
410
411 ArgStringList CmdArgs;
412
413 // Silence warning for "clang -g foo.o -o foo"
414 Args.ClaimAllArgs(options::OPT_g_Group);
415 // and "clang -emit-llvm foo.o -o foo"
416 Args.ClaimAllArgs(options::OPT_emit_llvm);
417 // and for "clang -w foo.o -o foo". Other warning options are already
418 // handled somewhere else.
419 Args.ClaimAllArgs(options::OPT_w);
420
421 if (!D.SysRoot.empty())
422 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
423
424 if (IsPIE)
425 CmdArgs.push_back("-pie");
426
427 if (IsStaticPIE) {
428 CmdArgs.push_back("-static");
429 CmdArgs.push_back("-pie");
430 CmdArgs.push_back("--no-dynamic-linker");
431 CmdArgs.push_back("-z");
432 CmdArgs.push_back("text");
433 }
434
435 if (Args.hasArg(options::OPT_rdynamic))
436 CmdArgs.push_back("-export-dynamic");
437
438 if (Args.hasArg(options::OPT_s))
439 CmdArgs.push_back("-s");
440
441 if (Triple.isARM() || Triple.isThumb() || Triple.isAArch64()) {
442 bool IsBigEndian = isArmBigEndian(Triple, Args);
443 if (IsBigEndian)
444 arm::appendBE8LinkFlag(Args, CmdArgs, Triple);
445 IsBigEndian = IsBigEndian || Arch == llvm::Triple::aarch64_be;
446 CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL");
447 }
448
449 // Most Android ARM64 targets should enable the linker fix for erratum
450 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
451 if (Arch == llvm::Triple::aarch64 && isAndroid) {
452 std::string CPU = getCPUName(D, Args, Triple);
453 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
454 CmdArgs.push_back("--fix-cortex-a53-843419");
455 }
456
457 ToolChain.addExtraOpts(CmdArgs);
458
459 CmdArgs.push_back("--eh-frame-hdr");
460
461 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) {
462 CmdArgs.push_back("-m");
463 CmdArgs.push_back(LDMOption);
464 } else {
465 D.Diag(diag::err_target_unknown_triple) << Triple.str();
466 return;
467 }
468 if (Triple.isRISCV())
469 CmdArgs.push_back("-X");
470
471 if (Args.hasArg(options::OPT_shared))
472 CmdArgs.push_back("-shared");
473
474 if (IsStatic) {
475 CmdArgs.push_back("-static");
476 } else {
477 if (Args.hasArg(options::OPT_rdynamic))
478 CmdArgs.push_back("-export-dynamic");
479
480 if (!Args.hasArg(options::OPT_shared) && !IsStaticPIE &&
481 !Args.hasArg(options::OPT_r)) {
482 CmdArgs.push_back("-dynamic-linker");
483 CmdArgs.push_back(Args.MakeArgString(Twine(D.DyldPrefix) +
484 ToolChain.getDynamicLinker(Args)));
485 }
486 }
487
488 CmdArgs.push_back("-o");
489 CmdArgs.push_back(Output.getFilename());
490
491 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
492 options::OPT_r)) {
493 if (!isAndroid && !IsIAMCU) {
494 const char *crt1 = nullptr;
495 if (!Args.hasArg(options::OPT_shared)) {
496 if (Args.hasArg(options::OPT_pg))
497 crt1 = "gcrt1.o";
498 else if (IsPIE)
499 crt1 = "Scrt1.o";
500 else if (IsStaticPIE)
501 crt1 = "rcrt1.o";
502 else
503 crt1 = "crt1.o";
504 }
505 if (crt1)
506 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
507
508 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
509 }
510
511 if (IsVE) {
512 CmdArgs.push_back("-z");
513 CmdArgs.push_back("max-page-size=0x4000000");
514 }
515
516 if (IsIAMCU)
517 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
518 else if (HasCRTBeginEndFiles) {
519 std::string P;
520 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
521 !isAndroid) {
522 std::string crtbegin = ToolChain.getCompilerRT(Args, "crtbegin",
523 ToolChain::FT_Object);
524 if (ToolChain.getVFS().exists(crtbegin))
525 P = crtbegin;
526 }
527 if (P.empty()) {
528 const char *crtbegin;
529 if (Args.hasArg(options::OPT_shared))
530 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
531 else if (IsStatic)
532 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
533 else if (IsPIE || IsStaticPIE)
534 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
535 else
536 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
537 P = ToolChain.GetFilePath(crtbegin);
538 }
539 CmdArgs.push_back(Args.MakeArgString(P));
540 }
541
542 // Add crtfastmath.o if available and fast math is enabled.
543 ToolChain.addFastMathRuntimeIfAvailable(Args, CmdArgs);
544 }
545
546 Args.AddAllArgs(CmdArgs, options::OPT_L);
547 Args.AddAllArgs(CmdArgs, options::OPT_u);
548
549 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
550
551 if (D.isUsingLTO()) {
552 assert(!Inputs.empty() && "Must have at least one input.");
553 addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs[0],
554 D.getLTOMode() == LTOK_Thin);
555 }
556
557 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
558 CmdArgs.push_back("--no-demangle");
559
560 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
561 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
562 addLinkerCompressDebugSectionsOption(ToolChain, Args, CmdArgs);
563 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
564
565 addHIPRuntimeLibArgs(ToolChain, Args, CmdArgs);
566
567 // The profile runtime also needs access to system libraries.
568 getToolChain().addProfileRTLibs(Args, CmdArgs);
569
570 if (D.CCCIsCXX() &&
571 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,
572 options::OPT_r)) {
573 if (ToolChain.ShouldLinkCXXStdlib(Args)) {
574 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
575 !Args.hasArg(options::OPT_static);
576 if (OnlyLibstdcxxStatic)
577 CmdArgs.push_back("-Bstatic");
578 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
579 if (OnlyLibstdcxxStatic)
580 CmdArgs.push_back("-Bdynamic");
581 }
582 CmdArgs.push_back("-lm");
583 }
584
585 // If we are linking for the device all symbols should be bound locally. The
586 // symbols are already protected which makes this redundant. This is only
587 // necessary to work around a problem in bfd.
588 // TODO: Remove this once 'lld' becomes the only linker for offloading.
589 if (JA.isDeviceOffloading(Action::OFK_OpenMP))
590 CmdArgs.push_back("-Bsymbolic");
591
592 // Silence warnings when linking C code with a C++ '-stdlib' argument.
593 Args.ClaimAllArgs(options::OPT_stdlib_EQ);
594
595 // Additional linker set-up and flags for Fortran. This is required in order
596 // to generate executables. As Fortran runtime depends on the C runtime,
597 // these dependencies need to be listed before the C runtime below (i.e.
598 // AddRuntTimeLibs).
599 if (D.IsFlangMode()) {
600 addFortranRuntimeLibraryPath(ToolChain, Args, CmdArgs);
601 addFortranRuntimeLibs(ToolChain, CmdArgs);
602 CmdArgs.push_back("-lm");
603 }
604
605 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_r)) {
606 if (!Args.hasArg(options::OPT_nodefaultlibs)) {
607 if (IsStatic || IsStaticPIE)
608 CmdArgs.push_back("--start-group");
609
610 if (NeedsSanitizerDeps)
611 linkSanitizerRuntimeDeps(ToolChain, CmdArgs);
612
613 if (NeedsXRayDeps)
614 linkXRayRuntimeDeps(ToolChain, CmdArgs);
615
616 bool WantPthread = Args.hasArg(options::OPT_pthread) ||
617 Args.hasArg(options::OPT_pthreads);
618
619 // Use the static OpenMP runtime with -static-openmp
620 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) &&
621 !Args.hasArg(options::OPT_static);
622
623 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
624 // require librt. Most modern Linux platforms do, but some may not.
625 if (addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP,
626 JA.isHostOffloading(Action::OFK_OpenMP),
627 /* GompNeedsRT= */ true))
628 // OpenMP runtimes implies pthreads when using the GNU toolchain.
629 // FIXME: Does this really make sense for all GNU toolchains?
630 WantPthread = true;
631
632 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
633
634 // LLVM support for atomics on 32-bit SPARC V8+ is incomplete, so
635 // forcibly link with libatomic as a workaround.
636 // TODO: Issue #41880 and D118021.
637 if (getToolChain().getTriple().getArch() == llvm::Triple::sparc) {
638 CmdArgs.push_back("--push-state");
639 CmdArgs.push_back("--as-needed");
640 CmdArgs.push_back("-latomic");
641 CmdArgs.push_back("--pop-state");
642 }
643
644 if (WantPthread && !isAndroid)
645 CmdArgs.push_back("-lpthread");
646
647 if (Args.hasArg(options::OPT_fsplit_stack))
648 CmdArgs.push_back("--wrap=pthread_create");
649
650 if (!Args.hasArg(options::OPT_nolibc))
651 CmdArgs.push_back("-lc");
652
653 // Add IAMCU specific libs, if needed.
654 if (IsIAMCU)
655 CmdArgs.push_back("-lgloss");
656
657 if (IsStatic || IsStaticPIE)
658 CmdArgs.push_back("--end-group");
659 else
660 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
661
662 // Add IAMCU specific libs (outside the group), if needed.
663 if (IsIAMCU) {
664 CmdArgs.push_back("--as-needed");
665 CmdArgs.push_back("-lsoftfp");
666 CmdArgs.push_back("--no-as-needed");
667 }
668 }
669
670 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) {
671 if (HasCRTBeginEndFiles) {
672 std::string P;
673 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
674 !isAndroid) {
675 std::string crtend = ToolChain.getCompilerRT(Args, "crtend",
676 ToolChain::FT_Object);
677 if (ToolChain.getVFS().exists(crtend))
678 P = crtend;
679 }
680 if (P.empty()) {
681 const char *crtend;
682 if (Args.hasArg(options::OPT_shared))
683 crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
684 else if (IsPIE || IsStaticPIE)
685 crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
686 else
687 crtend = isAndroid ? "crtend_android.o" : "crtend.o";
688 P = ToolChain.GetFilePath(crtend);
689 }
690 CmdArgs.push_back(Args.MakeArgString(P));
691 }
692 if (!isAndroid)
693 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
694 }
695 }
696
697 Args.AddAllArgs(CmdArgs, options::OPT_T);
698
699 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
700 C.addCommand(std::make_unique<Command>(JA, *this,
701 ResponseFileSupport::AtFileCurCP(),
702 Exec, CmdArgs, Inputs, Output));
703 }
704
ConstructJob(Compilation & C,const JobAction & JA,const InputInfo & Output,const InputInfoList & Inputs,const ArgList & Args,const char * LinkingOutput) const705 void tools::gnutools::Assembler::ConstructJob(Compilation &C,
706 const JobAction &JA,
707 const InputInfo &Output,
708 const InputInfoList &Inputs,
709 const ArgList &Args,
710 const char *LinkingOutput) const {
711 const auto &D = getToolChain().getDriver();
712
713 claimNoWarnArgs(Args);
714
715 ArgStringList CmdArgs;
716
717 llvm::Reloc::Model RelocationModel;
718 unsigned PICLevel;
719 bool IsPIE;
720 const char *DefaultAssembler = "as";
721 std::tie(RelocationModel, PICLevel, IsPIE) =
722 ParsePICArgs(getToolChain(), Args);
723
724 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) {
725 if (A->getOption().getID() == options::OPT_gz) {
726 CmdArgs.push_back("--compress-debug-sections");
727 } else {
728 StringRef Value = A->getValue();
729 if (Value == "none" || Value == "zlib") {
730 CmdArgs.push_back(
731 Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
732 } else {
733 D.Diag(diag::err_drv_unsupported_option_argument)
734 << A->getOption().getName() << Value;
735 }
736 }
737 }
738
739 switch (getToolChain().getArch()) {
740 default:
741 break;
742 // Add --32/--64 to make sure we get the format we want.
743 // This is incomplete
744 case llvm::Triple::x86:
745 CmdArgs.push_back("--32");
746 break;
747 case llvm::Triple::x86_64:
748 if (getToolChain().getTriple().isX32())
749 CmdArgs.push_back("--x32");
750 else
751 CmdArgs.push_back("--64");
752 break;
753 case llvm::Triple::ppc: {
754 CmdArgs.push_back("-a32");
755 CmdArgs.push_back("-mppc");
756 CmdArgs.push_back("-mbig-endian");
757 CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
758 getCPUName(D, Args, getToolChain().getTriple())));
759 break;
760 }
761 case llvm::Triple::ppcle: {
762 CmdArgs.push_back("-a32");
763 CmdArgs.push_back("-mppc");
764 CmdArgs.push_back("-mlittle-endian");
765 CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
766 getCPUName(D, Args, getToolChain().getTriple())));
767 break;
768 }
769 case llvm::Triple::ppc64: {
770 CmdArgs.push_back("-a64");
771 CmdArgs.push_back("-mppc64");
772 CmdArgs.push_back("-mbig-endian");
773 CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
774 getCPUName(D, Args, getToolChain().getTriple())));
775 break;
776 }
777 case llvm::Triple::ppc64le: {
778 CmdArgs.push_back("-a64");
779 CmdArgs.push_back("-mppc64");
780 CmdArgs.push_back("-mlittle-endian");
781 CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
782 getCPUName(D, Args, getToolChain().getTriple())));
783 break;
784 }
785 case llvm::Triple::riscv32:
786 case llvm::Triple::riscv64: {
787 StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple());
788 CmdArgs.push_back("-mabi");
789 CmdArgs.push_back(ABIName.data());
790 StringRef MArchName = riscv::getRISCVArch(Args, getToolChain().getTriple());
791 CmdArgs.push_back("-march");
792 CmdArgs.push_back(MArchName.data());
793 if (!Args.hasFlag(options::OPT_mrelax, options::OPT_mno_relax, true))
794 Args.addOptOutFlag(CmdArgs, options::OPT_mrelax, options::OPT_mno_relax);
795 break;
796 }
797 case llvm::Triple::sparc:
798 case llvm::Triple::sparcel: {
799 CmdArgs.push_back("-32");
800 std::string CPU = getCPUName(D, Args, getToolChain().getTriple());
801 CmdArgs.push_back(
802 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
803 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
804 break;
805 }
806 case llvm::Triple::sparcv9: {
807 CmdArgs.push_back("-64");
808 std::string CPU = getCPUName(D, Args, getToolChain().getTriple());
809 CmdArgs.push_back(
810 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
811 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
812 break;
813 }
814 case llvm::Triple::arm:
815 case llvm::Triple::armeb:
816 case llvm::Triple::thumb:
817 case llvm::Triple::thumbeb: {
818 const llvm::Triple &Triple2 = getToolChain().getTriple();
819 CmdArgs.push_back(isArmBigEndian(Triple2, Args) ? "-EB" : "-EL");
820 switch (Triple2.getSubArch()) {
821 case llvm::Triple::ARMSubArch_v7:
822 CmdArgs.push_back("-mfpu=neon");
823 break;
824 case llvm::Triple::ARMSubArch_v8:
825 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8");
826 break;
827 default:
828 break;
829 }
830
831 switch (arm::getARMFloatABI(getToolChain(), Args)) {
832 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
833 case arm::FloatABI::Soft:
834 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft"));
835 break;
836 case arm::FloatABI::SoftFP:
837 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp"));
838 break;
839 case arm::FloatABI::Hard:
840 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard"));
841 break;
842 }
843
844 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
845 normalizeCPUNamesForAssembler(Args, CmdArgs);
846
847 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ);
848 break;
849 }
850 case llvm::Triple::aarch64:
851 case llvm::Triple::aarch64_be: {
852 CmdArgs.push_back(
853 getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL");
854 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
855 normalizeCPUNamesForAssembler(Args, CmdArgs);
856
857 break;
858 }
859 case llvm::Triple::mips:
860 case llvm::Triple::mipsel:
861 case llvm::Triple::mips64:
862 case llvm::Triple::mips64el: {
863 StringRef CPUName;
864 StringRef ABIName;
865 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
866 ABIName = mips::getGnuCompatibleMipsABIName(ABIName);
867
868 CmdArgs.push_back("-march");
869 CmdArgs.push_back(CPUName.data());
870
871 CmdArgs.push_back("-mabi");
872 CmdArgs.push_back(ABIName.data());
873
874 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
875 // or -mshared (not implemented) is in effect.
876 if (RelocationModel == llvm::Reloc::Static)
877 CmdArgs.push_back("-mno-shared");
878
879 // LLVM doesn't support -mplt yet and acts as if it is always given.
880 // However, -mplt has no effect with the N64 ABI.
881 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls))
882 CmdArgs.push_back("-call_nonpic");
883
884 if (getToolChain().getTriple().isLittleEndian())
885 CmdArgs.push_back("-EL");
886 else
887 CmdArgs.push_back("-EB");
888
889 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) {
890 if (StringRef(A->getValue()) == "2008")
891 CmdArgs.push_back(Args.MakeArgString("-mnan=2008"));
892 }
893
894 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
895 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx,
896 options::OPT_mfp64)) {
897 A->claim();
898 A->render(Args, CmdArgs);
899 } else if (mips::shouldUseFPXX(
900 Args, getToolChain().getTriple(), CPUName, ABIName,
901 mips::getMipsFloatABI(getToolChain().getDriver(), Args,
902 getToolChain().getTriple())))
903 CmdArgs.push_back("-mfpxx");
904
905 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
906 // -mno-mips16 is actually -no-mips16.
907 if (Arg *A =
908 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) {
909 if (A->getOption().matches(options::OPT_mips16)) {
910 A->claim();
911 A->render(Args, CmdArgs);
912 } else {
913 A->claim();
914 CmdArgs.push_back("-no-mips16");
915 }
916 }
917
918 Args.AddLastArg(CmdArgs, options::OPT_mmicromips,
919 options::OPT_mno_micromips);
920 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp);
921 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2);
922
923 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) {
924 // Do not use AddLastArg because not all versions of MIPS assembler
925 // support -mmsa / -mno-msa options.
926 if (A->getOption().matches(options::OPT_mmsa))
927 CmdArgs.push_back(Args.MakeArgString("-mmsa"));
928 }
929
930 Args.AddLastArg(CmdArgs, options::OPT_mhard_float,
931 options::OPT_msoft_float);
932
933 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float,
934 options::OPT_msingle_float);
935
936 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg,
937 options::OPT_mno_odd_spreg);
938
939 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
940 break;
941 }
942 case llvm::Triple::systemz: {
943 // Always pass an -march option, since our default of z10 is later
944 // than the GNU assembler's default.
945 std::string CPUName = systemz::getSystemZTargetCPU(Args);
946 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName));
947 break;
948 }
949 case llvm::Triple::ve:
950 DefaultAssembler = "nas";
951 }
952
953 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
954 options::OPT_fdebug_prefix_map_EQ)) {
955 StringRef Map = A->getValue();
956 if (!Map.contains('='))
957 D.Diag(diag::err_drv_invalid_argument_to_option)
958 << Map << A->getOption().getName();
959 else {
960 CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map"));
961 CmdArgs.push_back(Args.MakeArgString(Map));
962 }
963 A->claim();
964 }
965
966 Args.AddAllArgs(CmdArgs, options::OPT_I);
967 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
968
969 CmdArgs.push_back("-o");
970 CmdArgs.push_back(Output.getFilename());
971
972 for (const auto &II : Inputs)
973 CmdArgs.push_back(II.getFilename());
974
975 const char *Exec =
976 Args.MakeArgString(getToolChain().GetProgramPath(DefaultAssembler));
977 C.addCommand(std::make_unique<Command>(JA, *this,
978 ResponseFileSupport::AtFileCurCP(),
979 Exec, CmdArgs, Inputs, Output));
980
981 // Handle the debug info splitting at object creation time if we're
982 // creating an object.
983 // TODO: Currently only works on linux with newer objcopy.
984 if (Args.hasArg(options::OPT_gsplit_dwarf) &&
985 getToolChain().getTriple().isOSLinux())
986 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
987 SplitDebugName(JA, Args, Inputs[0], Output));
988 }
989
990 namespace {
991 // Filter to remove Multilibs that don't exist as a suffix to Path
992 class FilterNonExistent {
993 StringRef Base, File;
994 llvm::vfs::FileSystem &VFS;
995
996 public:
FilterNonExistent(StringRef Base,StringRef File,llvm::vfs::FileSystem & VFS)997 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS)
998 : Base(Base), File(File), VFS(VFS) {}
operator ()(const Multilib & M)999 bool operator()(const Multilib &M) {
1000 return !VFS.exists(Base + M.gccSuffix() + File);
1001 }
1002 };
1003 } // end anonymous namespace
1004
isSoftFloatABI(const ArgList & Args)1005 static bool isSoftFloatABI(const ArgList &Args) {
1006 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
1007 options::OPT_mfloat_abi_EQ);
1008 if (!A)
1009 return false;
1010
1011 return A->getOption().matches(options::OPT_msoft_float) ||
1012 (A->getOption().matches(options::OPT_mfloat_abi_EQ) &&
1013 A->getValue() == StringRef("soft"));
1014 }
1015
isArmOrThumbArch(llvm::Triple::ArchType Arch)1016 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
1017 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
1018 }
1019
isMipsEL(llvm::Triple::ArchType Arch)1020 static bool isMipsEL(llvm::Triple::ArchType Arch) {
1021 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
1022 }
1023
isMips16(const ArgList & Args)1024 static bool isMips16(const ArgList &Args) {
1025 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16);
1026 return A && A->getOption().matches(options::OPT_mips16);
1027 }
1028
isMicroMips(const ArgList & Args)1029 static bool isMicroMips(const ArgList &Args) {
1030 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips);
1031 return A && A->getOption().matches(options::OPT_mmicromips);
1032 }
1033
isMSP430(llvm::Triple::ArchType Arch)1034 static bool isMSP430(llvm::Triple::ArchType Arch) {
1035 return Arch == llvm::Triple::msp430;
1036 }
1037
makeMultilib(StringRef commonSuffix)1038 static Multilib makeMultilib(StringRef commonSuffix) {
1039 return Multilib(commonSuffix, commonSuffix, commonSuffix);
1040 }
1041
findMipsCsMultilibs(const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)1042 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags,
1043 FilterNonExistent &NonExistent,
1044 DetectedMultilibs &Result) {
1045 // Check for Code Sourcery toolchain multilibs
1046 MultilibSet CSMipsMultilibs;
1047 {
1048 auto MArchMips16 = makeMultilib("/mips16").flag("+m32").flag("+mips16");
1049
1050 auto MArchMicroMips =
1051 makeMultilib("/micromips").flag("+m32").flag("+mmicromips");
1052
1053 auto MArchDefault = makeMultilib("").flag("-mips16").flag("-mmicromips");
1054
1055 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
1056
1057 auto SoftFloat = makeMultilib("/soft-float").flag("+msoft-float");
1058
1059 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
1060
1061 auto DefaultFloat =
1062 makeMultilib("").flag("-msoft-float").flag("-mnan=2008");
1063
1064 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
1065
1066 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1067
1068 // Note that this one's osSuffix is ""
1069 auto MAbi64 = makeMultilib("")
1070 .gccSuffix("/64")
1071 .includeSuffix("/64")
1072 .flag("+mabi=n64")
1073 .flag("-mabi=n32")
1074 .flag("-m32");
1075
1076 CSMipsMultilibs =
1077 MultilibSet()
1078 .Either(MArchMips16, MArchMicroMips, MArchDefault)
1079 .Maybe(UCLibc)
1080 .Either(SoftFloat, Nan2008, DefaultFloat)
1081 .FilterOut("/micromips/nan2008")
1082 .FilterOut("/mips16/nan2008")
1083 .Either(BigEndian, LittleEndian)
1084 .Maybe(MAbi64)
1085 .FilterOut("/mips16.*/64")
1086 .FilterOut("/micromips.*/64")
1087 .FilterOut(NonExistent)
1088 .setIncludeDirsCallback([](const Multilib &M) {
1089 std::vector<std::string> Dirs({"/include"});
1090 if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1091 Dirs.push_back(
1092 "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
1093 else
1094 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include");
1095 return Dirs;
1096 });
1097 }
1098
1099 MultilibSet DebianMipsMultilibs;
1100 {
1101 Multilib MAbiN32 =
1102 Multilib().gccSuffix("/n32").includeSuffix("/n32").flag("+mabi=n32");
1103
1104 Multilib M64 = Multilib()
1105 .gccSuffix("/64")
1106 .includeSuffix("/64")
1107 .flag("+m64")
1108 .flag("-m32")
1109 .flag("-mabi=n32");
1110
1111 Multilib M32 =
1112 Multilib().gccSuffix("/32").flag("-m64").flag("+m32").flag("-mabi=n32");
1113
1114 DebianMipsMultilibs =
1115 MultilibSet().Either(M32, M64, MAbiN32).FilterOut(NonExistent);
1116 }
1117
1118 // Sort candidates. Toolchain that best meets the directories tree goes first.
1119 // Then select the first toolchains matches command line flags.
1120 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
1121 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
1122 std::iter_swap(Candidates, Candidates + 1);
1123 for (const MultilibSet *Candidate : Candidates) {
1124 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1125 if (Candidate == &DebianMipsMultilibs)
1126 Result.BiarchSibling = Multilib();
1127 Result.Multilibs = *Candidate;
1128 return true;
1129 }
1130 }
1131 return false;
1132 }
1133
findMipsAndroidMultilibs(llvm::vfs::FileSystem & VFS,StringRef Path,const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)1134 static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path,
1135 const Multilib::flags_list &Flags,
1136 FilterNonExistent &NonExistent,
1137 DetectedMultilibs &Result) {
1138
1139 MultilibSet AndroidMipsMultilibs =
1140 MultilibSet()
1141 .Maybe(Multilib("/mips-r2").flag("+march=mips32r2"))
1142 .Maybe(Multilib("/mips-r6").flag("+march=mips32r6"))
1143 .FilterOut(NonExistent);
1144
1145 MultilibSet AndroidMipselMultilibs =
1146 MultilibSet()
1147 .Either(Multilib().flag("+march=mips32"),
1148 Multilib("/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1149 Multilib("/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1150 .FilterOut(NonExistent);
1151
1152 MultilibSet AndroidMips64elMultilibs =
1153 MultilibSet()
1154 .Either(
1155 Multilib().flag("+march=mips64r6"),
1156 Multilib("/32/mips-r1", "", "/mips-r1").flag("+march=mips32"),
1157 Multilib("/32/mips-r2", "", "/mips-r2").flag("+march=mips32r2"),
1158 Multilib("/32/mips-r6", "", "/mips-r6").flag("+march=mips32r6"))
1159 .FilterOut(NonExistent);
1160
1161 MultilibSet *MS = &AndroidMipsMultilibs;
1162 if (VFS.exists(Path + "/mips-r6"))
1163 MS = &AndroidMipselMultilibs;
1164 else if (VFS.exists(Path + "/32"))
1165 MS = &AndroidMips64elMultilibs;
1166 if (MS->select(Flags, Result.SelectedMultilib)) {
1167 Result.Multilibs = *MS;
1168 return true;
1169 }
1170 return false;
1171 }
1172
findMipsMuslMultilibs(const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)1173 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags,
1174 FilterNonExistent &NonExistent,
1175 DetectedMultilibs &Result) {
1176 // Musl toolchain multilibs
1177 MultilibSet MuslMipsMultilibs;
1178 {
1179 auto MArchMipsR2 = makeMultilib("")
1180 .osSuffix("/mips-r2-hard-musl")
1181 .flag("+EB")
1182 .flag("-EL")
1183 .flag("+march=mips32r2");
1184
1185 auto MArchMipselR2 = makeMultilib("/mipsel-r2-hard-musl")
1186 .flag("-EB")
1187 .flag("+EL")
1188 .flag("+march=mips32r2");
1189
1190 MuslMipsMultilibs = MultilibSet().Either(MArchMipsR2, MArchMipselR2);
1191
1192 // Specify the callback that computes the include directories.
1193 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1194 return std::vector<std::string>(
1195 {"/../sysroot" + M.osSuffix() + "/usr/include"});
1196 });
1197 }
1198 if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilib)) {
1199 Result.Multilibs = MuslMipsMultilibs;
1200 return true;
1201 }
1202 return false;
1203 }
1204
findMipsMtiMultilibs(const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)1205 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags,
1206 FilterNonExistent &NonExistent,
1207 DetectedMultilibs &Result) {
1208 // CodeScape MTI toolchain v1.2 and early.
1209 MultilibSet MtiMipsMultilibsV1;
1210 {
1211 auto MArchMips32 = makeMultilib("/mips32")
1212 .flag("+m32")
1213 .flag("-m64")
1214 .flag("-mmicromips")
1215 .flag("+march=mips32");
1216
1217 auto MArchMicroMips = makeMultilib("/micromips")
1218 .flag("+m32")
1219 .flag("-m64")
1220 .flag("+mmicromips");
1221
1222 auto MArchMips64r2 = makeMultilib("/mips64r2")
1223 .flag("-m32")
1224 .flag("+m64")
1225 .flag("+march=mips64r2");
1226
1227 auto MArchMips64 = makeMultilib("/mips64").flag("-m32").flag("+m64").flag(
1228 "-march=mips64r2");
1229
1230 auto MArchDefault = makeMultilib("")
1231 .flag("+m32")
1232 .flag("-m64")
1233 .flag("-mmicromips")
1234 .flag("+march=mips32r2");
1235
1236 auto Mips16 = makeMultilib("/mips16").flag("+mips16");
1237
1238 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc");
1239
1240 auto MAbi64 =
1241 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1242
1243 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL");
1244
1245 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1246
1247 auto SoftFloat = makeMultilib("/sof").flag("+msoft-float");
1248
1249 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008");
1250
1251 MtiMipsMultilibsV1 =
1252 MultilibSet()
1253 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64,
1254 MArchDefault)
1255 .Maybe(UCLibc)
1256 .Maybe(Mips16)
1257 .FilterOut("/mips64/mips16")
1258 .FilterOut("/mips64r2/mips16")
1259 .FilterOut("/micromips/mips16")
1260 .Maybe(MAbi64)
1261 .FilterOut("/micromips/64")
1262 .FilterOut("/mips32/64")
1263 .FilterOut("^/64")
1264 .FilterOut("/mips16/64")
1265 .Either(BigEndian, LittleEndian)
1266 .Maybe(SoftFloat)
1267 .Maybe(Nan2008)
1268 .FilterOut(".*sof/nan2008")
1269 .FilterOut(NonExistent)
1270 .setIncludeDirsCallback([](const Multilib &M) {
1271 std::vector<std::string> Dirs({"/include"});
1272 if (StringRef(M.includeSuffix()).startswith("/uclibc"))
1273 Dirs.push_back("/../../../../sysroot/uclibc/usr/include");
1274 else
1275 Dirs.push_back("/../../../../sysroot/usr/include");
1276 return Dirs;
1277 });
1278 }
1279
1280 // CodeScape IMG toolchain starting from v1.3.
1281 MultilibSet MtiMipsMultilibsV2;
1282 {
1283 auto BeHard = makeMultilib("/mips-r2-hard")
1284 .flag("+EB")
1285 .flag("-msoft-float")
1286 .flag("-mnan=2008")
1287 .flag("-muclibc");
1288 auto BeSoft = makeMultilib("/mips-r2-soft")
1289 .flag("+EB")
1290 .flag("+msoft-float")
1291 .flag("-mnan=2008");
1292 auto ElHard = makeMultilib("/mipsel-r2-hard")
1293 .flag("+EL")
1294 .flag("-msoft-float")
1295 .flag("-mnan=2008")
1296 .flag("-muclibc");
1297 auto ElSoft = makeMultilib("/mipsel-r2-soft")
1298 .flag("+EL")
1299 .flag("+msoft-float")
1300 .flag("-mnan=2008")
1301 .flag("-mmicromips");
1302 auto BeHardNan = makeMultilib("/mips-r2-hard-nan2008")
1303 .flag("+EB")
1304 .flag("-msoft-float")
1305 .flag("+mnan=2008")
1306 .flag("-muclibc");
1307 auto ElHardNan = makeMultilib("/mipsel-r2-hard-nan2008")
1308 .flag("+EL")
1309 .flag("-msoft-float")
1310 .flag("+mnan=2008")
1311 .flag("-muclibc")
1312 .flag("-mmicromips");
1313 auto BeHardNanUclibc = makeMultilib("/mips-r2-hard-nan2008-uclibc")
1314 .flag("+EB")
1315 .flag("-msoft-float")
1316 .flag("+mnan=2008")
1317 .flag("+muclibc");
1318 auto ElHardNanUclibc = makeMultilib("/mipsel-r2-hard-nan2008-uclibc")
1319 .flag("+EL")
1320 .flag("-msoft-float")
1321 .flag("+mnan=2008")
1322 .flag("+muclibc");
1323 auto BeHardUclibc = makeMultilib("/mips-r2-hard-uclibc")
1324 .flag("+EB")
1325 .flag("-msoft-float")
1326 .flag("-mnan=2008")
1327 .flag("+muclibc");
1328 auto ElHardUclibc = makeMultilib("/mipsel-r2-hard-uclibc")
1329 .flag("+EL")
1330 .flag("-msoft-float")
1331 .flag("-mnan=2008")
1332 .flag("+muclibc");
1333 auto ElMicroHardNan = makeMultilib("/micromipsel-r2-hard-nan2008")
1334 .flag("+EL")
1335 .flag("-msoft-float")
1336 .flag("+mnan=2008")
1337 .flag("+mmicromips");
1338 auto ElMicroSoft = makeMultilib("/micromipsel-r2-soft")
1339 .flag("+EL")
1340 .flag("+msoft-float")
1341 .flag("-mnan=2008")
1342 .flag("+mmicromips");
1343
1344 auto O32 =
1345 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1346 auto N32 =
1347 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1348 auto N64 =
1349 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1350
1351 MtiMipsMultilibsV2 =
1352 MultilibSet()
1353 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1354 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1355 ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1356 .Either(O32, N32, N64)
1357 .FilterOut(NonExistent)
1358 .setIncludeDirsCallback([](const Multilib &M) {
1359 return std::vector<std::string>({"/../../../../sysroot" +
1360 M.includeSuffix() +
1361 "/../usr/include"});
1362 })
1363 .setFilePathsCallback([](const Multilib &M) {
1364 return std::vector<std::string>(
1365 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1366 });
1367 }
1368 for (auto Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1369 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1370 Result.Multilibs = *Candidate;
1371 return true;
1372 }
1373 }
1374 return false;
1375 }
1376
findMipsImgMultilibs(const Multilib::flags_list & Flags,FilterNonExistent & NonExistent,DetectedMultilibs & Result)1377 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags,
1378 FilterNonExistent &NonExistent,
1379 DetectedMultilibs &Result) {
1380 // CodeScape IMG toolchain v1.2 and early.
1381 MultilibSet ImgMultilibsV1;
1382 {
1383 auto Mips64r6 = makeMultilib("/mips64r6").flag("+m64").flag("-m32");
1384
1385 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB");
1386
1387 auto MAbi64 =
1388 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32");
1389
1390 ImgMultilibsV1 =
1391 MultilibSet()
1392 .Maybe(Mips64r6)
1393 .Maybe(MAbi64)
1394 .Maybe(LittleEndian)
1395 .FilterOut(NonExistent)
1396 .setIncludeDirsCallback([](const Multilib &M) {
1397 return std::vector<std::string>(
1398 {"/include", "/../../../../sysroot/usr/include"});
1399 });
1400 }
1401
1402 // CodeScape IMG toolchain starting from v1.3.
1403 MultilibSet ImgMultilibsV2;
1404 {
1405 auto BeHard = makeMultilib("/mips-r6-hard")
1406 .flag("+EB")
1407 .flag("-msoft-float")
1408 .flag("-mmicromips");
1409 auto BeSoft = makeMultilib("/mips-r6-soft")
1410 .flag("+EB")
1411 .flag("+msoft-float")
1412 .flag("-mmicromips");
1413 auto ElHard = makeMultilib("/mipsel-r6-hard")
1414 .flag("+EL")
1415 .flag("-msoft-float")
1416 .flag("-mmicromips");
1417 auto ElSoft = makeMultilib("/mipsel-r6-soft")
1418 .flag("+EL")
1419 .flag("+msoft-float")
1420 .flag("-mmicromips");
1421 auto BeMicroHard = makeMultilib("/micromips-r6-hard")
1422 .flag("+EB")
1423 .flag("-msoft-float")
1424 .flag("+mmicromips");
1425 auto BeMicroSoft = makeMultilib("/micromips-r6-soft")
1426 .flag("+EB")
1427 .flag("+msoft-float")
1428 .flag("+mmicromips");
1429 auto ElMicroHard = makeMultilib("/micromipsel-r6-hard")
1430 .flag("+EL")
1431 .flag("-msoft-float")
1432 .flag("+mmicromips");
1433 auto ElMicroSoft = makeMultilib("/micromipsel-r6-soft")
1434 .flag("+EL")
1435 .flag("+msoft-float")
1436 .flag("+mmicromips");
1437
1438 auto O32 =
1439 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64");
1440 auto N32 =
1441 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64");
1442 auto N64 =
1443 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64");
1444
1445 ImgMultilibsV2 =
1446 MultilibSet()
1447 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1448 ElMicroHard, ElMicroSoft})
1449 .Either(O32, N32, N64)
1450 .FilterOut(NonExistent)
1451 .setIncludeDirsCallback([](const Multilib &M) {
1452 return std::vector<std::string>({"/../../../../sysroot" +
1453 M.includeSuffix() +
1454 "/../usr/include"});
1455 })
1456 .setFilePathsCallback([](const Multilib &M) {
1457 return std::vector<std::string>(
1458 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1459 });
1460 }
1461 for (auto Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1462 if (Candidate->select(Flags, Result.SelectedMultilib)) {
1463 Result.Multilibs = *Candidate;
1464 return true;
1465 }
1466 }
1467 return false;
1468 }
1469
findMIPSMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1470 bool clang::driver::findMIPSMultilibs(const Driver &D,
1471 const llvm::Triple &TargetTriple,
1472 StringRef Path, const ArgList &Args,
1473 DetectedMultilibs &Result) {
1474 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1475
1476 StringRef CPUName;
1477 StringRef ABIName;
1478 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName);
1479
1480 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1481
1482 Multilib::flags_list Flags;
1483 addMultilibFlag(TargetTriple.isMIPS32(), "m32", Flags);
1484 addMultilibFlag(TargetTriple.isMIPS64(), "m64", Flags);
1485 addMultilibFlag(isMips16(Args), "mips16", Flags);
1486 addMultilibFlag(CPUName == "mips32", "march=mips32", Flags);
1487 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" ||
1488 CPUName == "mips32r5" || CPUName == "p5600",
1489 "march=mips32r2", Flags);
1490 addMultilibFlag(CPUName == "mips32r6", "march=mips32r6", Flags);
1491 addMultilibFlag(CPUName == "mips64", "march=mips64", Flags);
1492 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" ||
1493 CPUName == "mips64r5" || CPUName == "octeon" ||
1494 CPUName == "octeon+",
1495 "march=mips64r2", Flags);
1496 addMultilibFlag(CPUName == "mips64r6", "march=mips64r6", Flags);
1497 addMultilibFlag(isMicroMips(Args), "mmicromips", Flags);
1498 addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags);
1499 addMultilibFlag(tools::mips::isNaN2008(D, Args, TargetTriple), "mnan=2008",
1500 Flags);
1501 addMultilibFlag(ABIName == "n32", "mabi=n32", Flags);
1502 addMultilibFlag(ABIName == "n64", "mabi=n64", Flags);
1503 addMultilibFlag(isSoftFloatABI(Args), "msoft-float", Flags);
1504 addMultilibFlag(!isSoftFloatABI(Args), "mhard-float", Flags);
1505 addMultilibFlag(isMipsEL(TargetArch), "EL", Flags);
1506 addMultilibFlag(!isMipsEL(TargetArch), "EB", Flags);
1507
1508 if (TargetTriple.isAndroid())
1509 return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent,
1510 Result);
1511
1512 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1513 TargetTriple.getOS() == llvm::Triple::Linux &&
1514 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1515 return findMipsMuslMultilibs(Flags, NonExistent, Result);
1516
1517 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1518 TargetTriple.getOS() == llvm::Triple::Linux &&
1519 TargetTriple.isGNUEnvironment())
1520 return findMipsMtiMultilibs(Flags, NonExistent, Result);
1521
1522 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1523 TargetTriple.getOS() == llvm::Triple::Linux &&
1524 TargetTriple.isGNUEnvironment())
1525 return findMipsImgMultilibs(Flags, NonExistent, Result);
1526
1527 if (findMipsCsMultilibs(Flags, NonExistent, Result))
1528 return true;
1529
1530 // Fallback to the regular toolchain-tree structure.
1531 Multilib Default;
1532 Result.Multilibs.push_back(Default);
1533 Result.Multilibs.FilterOut(NonExistent);
1534
1535 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) {
1536 Result.BiarchSibling = Multilib();
1537 return true;
1538 }
1539
1540 return false;
1541 }
1542
findAndroidArmMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1543 static void findAndroidArmMultilibs(const Driver &D,
1544 const llvm::Triple &TargetTriple,
1545 StringRef Path, const ArgList &Args,
1546 DetectedMultilibs &Result) {
1547 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1548 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1549 Multilib ArmV7Multilib = makeMultilib("/armv7-a")
1550 .flag("+march=armv7-a")
1551 .flag("-mthumb");
1552 Multilib ThumbMultilib = makeMultilib("/thumb")
1553 .flag("-march=armv7-a")
1554 .flag("+mthumb");
1555 Multilib ArmV7ThumbMultilib = makeMultilib("/armv7-a/thumb")
1556 .flag("+march=armv7-a")
1557 .flag("+mthumb");
1558 Multilib DefaultMultilib = makeMultilib("")
1559 .flag("-march=armv7-a")
1560 .flag("-mthumb");
1561 MultilibSet AndroidArmMultilibs =
1562 MultilibSet()
1563 .Either(ThumbMultilib, ArmV7Multilib,
1564 ArmV7ThumbMultilib, DefaultMultilib)
1565 .FilterOut(NonExistent);
1566
1567 Multilib::flags_list Flags;
1568 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ);
1569 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1570 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1571 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1572 bool IsThumbMode = IsThumbArch ||
1573 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) ||
1574 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB);
1575 bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1576 (llvm::ARM::parseArchVersion(Arch) == 7 ||
1577 (IsArmArch && Arch == "" && IsV7SubArch));
1578 addMultilibFlag(IsArmV7Mode, "march=armv7-a", Flags);
1579 addMultilibFlag(IsThumbMode, "mthumb", Flags);
1580
1581 if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilib))
1582 Result.Multilibs = AndroidArmMultilibs;
1583 }
1584
findMSP430Multilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1585 static bool findMSP430Multilibs(const Driver &D,
1586 const llvm::Triple &TargetTriple,
1587 StringRef Path, const ArgList &Args,
1588 DetectedMultilibs &Result) {
1589 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1590 Multilib WithoutExceptions = makeMultilib("/430").flag("-exceptions");
1591 Multilib WithExceptions = makeMultilib("/430/exceptions").flag("+exceptions");
1592
1593 // FIXME: when clang starts to support msp430x ISA additional logic
1594 // to select between multilib must be implemented
1595 // Multilib MSP430xMultilib = makeMultilib("/large");
1596
1597 Result.Multilibs.push_back(WithoutExceptions);
1598 Result.Multilibs.push_back(WithExceptions);
1599 Result.Multilibs.FilterOut(NonExistent);
1600
1601 Multilib::flags_list Flags;
1602 addMultilibFlag(Args.hasFlag(options::OPT_fexceptions,
1603 options::OPT_fno_exceptions, false),
1604 "exceptions", Flags);
1605 if (Result.Multilibs.select(Flags, Result.SelectedMultilib))
1606 return true;
1607
1608 return false;
1609 }
1610
findCSKYMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1611 static void findCSKYMultilibs(const Driver &D, const llvm::Triple &TargetTriple,
1612 StringRef Path, const ArgList &Args,
1613 DetectedMultilibs &Result) {
1614 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1615
1616 tools::csky::FloatABI TheFloatABI = tools::csky::getCSKYFloatABI(D, Args);
1617 llvm::Optional<llvm::StringRef> Res = tools::csky::getCSKYArchName(D, Args, TargetTriple);
1618
1619 if (!Res)
1620 return;
1621 auto ARCHName = *Res;
1622
1623 Multilib::flags_list Flags;
1624 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Hard, "hard-fp", Flags);
1625 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::SoftFP, "soft-fp",
1626 Flags);
1627 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Soft, "soft", Flags);
1628 addMultilibFlag(ARCHName == "ck801", "march=ck801", Flags);
1629 addMultilibFlag(ARCHName == "ck802", "march=ck802", Flags);
1630 addMultilibFlag(ARCHName == "ck803", "march=ck803", Flags);
1631 addMultilibFlag(ARCHName == "ck804", "march=ck804", Flags);
1632 addMultilibFlag(ARCHName == "ck805", "march=ck805", Flags);
1633 addMultilibFlag(ARCHName == "ck807", "march=ck807", Flags);
1634 addMultilibFlag(ARCHName == "ck810", "march=ck810", Flags);
1635 addMultilibFlag(ARCHName == "ck810v", "march=ck810v", Flags);
1636 addMultilibFlag(ARCHName == "ck860", "march=ck860", Flags);
1637 addMultilibFlag(ARCHName == "ck860v", "march=ck860v", Flags);
1638
1639 bool isBigEndian = false;
1640 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
1641 options::OPT_mbig_endian))
1642 isBigEndian = !A->getOption().matches(options::OPT_mlittle_endian);
1643 addMultilibFlag(isBigEndian, "EB", Flags);
1644
1645 auto HardFloat = makeMultilib("/hard-fp").flag("+hard-fp");
1646 auto SoftFpFloat = makeMultilib("/soft-fp").flag("+soft-fp");
1647 auto SoftFloat = makeMultilib("").flag("+soft");
1648 auto Arch801 = makeMultilib("/ck801").flag("+march=ck801");
1649 auto Arch802 = makeMultilib("/ck802").flag("+march=ck802");
1650 auto Arch803 = makeMultilib("/ck803").flag("+march=ck803");
1651 // CK804 use the same library as CK803
1652 auto Arch804 = makeMultilib("/ck803").flag("+march=ck804");
1653 auto Arch805 = makeMultilib("/ck805").flag("+march=ck805");
1654 auto Arch807 = makeMultilib("/ck807").flag("+march=ck807");
1655 auto Arch810 = makeMultilib("").flag("+march=ck810");
1656 auto Arch810v = makeMultilib("/ck810v").flag("+march=ck810v");
1657 auto Arch860 = makeMultilib("/ck860").flag("+march=ck860");
1658 auto Arch860v = makeMultilib("/ck860v").flag("+march=ck860v");
1659 auto BigEndian = makeMultilib("/big").flag("+EB");
1660
1661 MultilibSet CSKYMultilibs =
1662 MultilibSet()
1663 .Maybe(BigEndian)
1664 .Either({Arch801, Arch802, Arch803, Arch804, Arch805, Arch807,
1665 Arch810, Arch810v, Arch860, Arch860v})
1666 .Either(HardFloat, SoftFpFloat, SoftFloat)
1667 .FilterOut(NonExistent);
1668
1669 if (CSKYMultilibs.select(Flags, Result.SelectedMultilib))
1670 Result.Multilibs = CSKYMultilibs;
1671 }
1672
findRISCVBareMetalMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1673 static void findRISCVBareMetalMultilibs(const Driver &D,
1674 const llvm::Triple &TargetTriple,
1675 StringRef Path, const ArgList &Args,
1676 DetectedMultilibs &Result) {
1677 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1678 struct RiscvMultilib {
1679 StringRef march;
1680 StringRef mabi;
1681 };
1682 // currently only support the set of multilibs like riscv-gnu-toolchain does.
1683 // TODO: support MULTILIB_REUSE
1684 constexpr RiscvMultilib RISCVMultilibSet[] = {
1685 {"rv32i", "ilp32"}, {"rv32im", "ilp32"}, {"rv32iac", "ilp32"},
1686 {"rv32imac", "ilp32"}, {"rv32imafc", "ilp32f"}, {"rv64imac", "lp64"},
1687 {"rv64imafdc", "lp64d"}};
1688
1689 std::vector<Multilib> Ms;
1690 for (auto Element : RISCVMultilibSet) {
1691 // multilib path rule is ${march}/${mabi}
1692 Ms.emplace_back(
1693 makeMultilib((Twine(Element.march) + "/" + Twine(Element.mabi)).str())
1694 .flag(Twine("+march=", Element.march).str())
1695 .flag(Twine("+mabi=", Element.mabi).str()));
1696 }
1697 MultilibSet RISCVMultilibs =
1698 MultilibSet()
1699 .Either(ArrayRef<Multilib>(Ms))
1700 .FilterOut(NonExistent)
1701 .setFilePathsCallback([](const Multilib &M) {
1702 return std::vector<std::string>(
1703 {M.gccSuffix(),
1704 "/../../../../riscv64-unknown-elf/lib" + M.gccSuffix(),
1705 "/../../../../riscv32-unknown-elf/lib" + M.gccSuffix()});
1706 });
1707
1708
1709 Multilib::flags_list Flags;
1710 llvm::StringSet<> Added_ABIs;
1711 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1712 StringRef MArch = tools::riscv::getRISCVArch(Args, TargetTriple);
1713 for (auto Element : RISCVMultilibSet) {
1714 addMultilibFlag(MArch == Element.march,
1715 Twine("march=", Element.march).str().c_str(), Flags);
1716 if (!Added_ABIs.count(Element.mabi)) {
1717 Added_ABIs.insert(Element.mabi);
1718 addMultilibFlag(ABIName == Element.mabi,
1719 Twine("mabi=", Element.mabi).str().c_str(), Flags);
1720 }
1721 }
1722
1723 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib))
1724 Result.Multilibs = RISCVMultilibs;
1725 }
1726
findRISCVMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,DetectedMultilibs & Result)1727 static void findRISCVMultilibs(const Driver &D,
1728 const llvm::Triple &TargetTriple, StringRef Path,
1729 const ArgList &Args, DetectedMultilibs &Result) {
1730 if (TargetTriple.getOS() == llvm::Triple::UnknownOS)
1731 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result);
1732
1733 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1734 Multilib Ilp32 = makeMultilib("lib32/ilp32").flag("+m32").flag("+mabi=ilp32");
1735 Multilib Ilp32f =
1736 makeMultilib("lib32/ilp32f").flag("+m32").flag("+mabi=ilp32f");
1737 Multilib Ilp32d =
1738 makeMultilib("lib32/ilp32d").flag("+m32").flag("+mabi=ilp32d");
1739 Multilib Lp64 = makeMultilib("lib64/lp64").flag("+m64").flag("+mabi=lp64");
1740 Multilib Lp64f = makeMultilib("lib64/lp64f").flag("+m64").flag("+mabi=lp64f");
1741 Multilib Lp64d = makeMultilib("lib64/lp64d").flag("+m64").flag("+mabi=lp64d");
1742 MultilibSet RISCVMultilibs =
1743 MultilibSet()
1744 .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d})
1745 .FilterOut(NonExistent);
1746
1747 Multilib::flags_list Flags;
1748 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64;
1749 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1750
1751 addMultilibFlag(!IsRV64, "m32", Flags);
1752 addMultilibFlag(IsRV64, "m64", Flags);
1753 addMultilibFlag(ABIName == "ilp32", "mabi=ilp32", Flags);
1754 addMultilibFlag(ABIName == "ilp32f", "mabi=ilp32f", Flags);
1755 addMultilibFlag(ABIName == "ilp32d", "mabi=ilp32d", Flags);
1756 addMultilibFlag(ABIName == "lp64", "mabi=lp64", Flags);
1757 addMultilibFlag(ABIName == "lp64f", "mabi=lp64f", Flags);
1758 addMultilibFlag(ABIName == "lp64d", "mabi=lp64d", Flags);
1759
1760 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib))
1761 Result.Multilibs = RISCVMultilibs;
1762 }
1763
findBiarchMultilibs(const Driver & D,const llvm::Triple & TargetTriple,StringRef Path,const ArgList & Args,bool NeedsBiarchSuffix,DetectedMultilibs & Result)1764 static bool findBiarchMultilibs(const Driver &D,
1765 const llvm::Triple &TargetTriple,
1766 StringRef Path, const ArgList &Args,
1767 bool NeedsBiarchSuffix,
1768 DetectedMultilibs &Result) {
1769 Multilib Default;
1770
1771 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1772 // in what would normally be GCCInstallPath and put the 64-bit
1773 // libs in a subdirectory named 64. The simple logic we follow is that
1774 // *if* there is a subdirectory of the right name with crtbegin.o in it,
1775 // we use that. If not, and if not a biarch triple alias, we look for
1776 // crtbegin.o without the subdirectory.
1777
1778 StringRef Suff64 = "/64";
1779 // Solaris uses platform-specific suffixes instead of /64.
1780 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
1781 switch (TargetTriple.getArch()) {
1782 case llvm::Triple::x86:
1783 case llvm::Triple::x86_64:
1784 Suff64 = "/amd64";
1785 break;
1786 case llvm::Triple::sparc:
1787 case llvm::Triple::sparcv9:
1788 Suff64 = "/sparcv9";
1789 break;
1790 default:
1791 break;
1792 }
1793 }
1794
1795 Multilib Alt64 = Multilib()
1796 .gccSuffix(Suff64)
1797 .includeSuffix(Suff64)
1798 .flag("-m32")
1799 .flag("+m64")
1800 .flag("-mx32");
1801 Multilib Alt32 = Multilib()
1802 .gccSuffix("/32")
1803 .includeSuffix("/32")
1804 .flag("+m32")
1805 .flag("-m64")
1806 .flag("-mx32");
1807 Multilib Altx32 = Multilib()
1808 .gccSuffix("/x32")
1809 .includeSuffix("/x32")
1810 .flag("-m32")
1811 .flag("-m64")
1812 .flag("+mx32");
1813
1814 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
1815 FilterNonExistent NonExistent(
1816 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
1817
1818 // Determine default multilib from: 32, 64, x32
1819 // Also handle cases such as 64 on 32, 32 on 64, etc.
1820 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
1821 const bool IsX32 = TargetTriple.isX32();
1822 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
1823 Want = WANT64;
1824 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
1825 Want = WANT64;
1826 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
1827 Want = WANT32;
1828 else {
1829 if (TargetTriple.isArch32Bit())
1830 Want = NeedsBiarchSuffix ? WANT64 : WANT32;
1831 else if (IsX32)
1832 Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
1833 else
1834 Want = NeedsBiarchSuffix ? WANT32 : WANT64;
1835 }
1836
1837 if (Want == WANT32)
1838 Default.flag("+m32").flag("-m64").flag("-mx32");
1839 else if (Want == WANT64)
1840 Default.flag("-m32").flag("+m64").flag("-mx32");
1841 else if (Want == WANTX32)
1842 Default.flag("-m32").flag("-m64").flag("+mx32");
1843 else
1844 return false;
1845
1846 Result.Multilibs.push_back(Default);
1847 Result.Multilibs.push_back(Alt64);
1848 Result.Multilibs.push_back(Alt32);
1849 Result.Multilibs.push_back(Altx32);
1850
1851 Result.Multilibs.FilterOut(NonExistent);
1852
1853 Multilib::flags_list Flags;
1854 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "m64", Flags);
1855 addMultilibFlag(TargetTriple.isArch32Bit(), "m32", Flags);
1856 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "mx32", Flags);
1857
1858 if (!Result.Multilibs.select(Flags, Result.SelectedMultilib))
1859 return false;
1860
1861 if (Result.SelectedMultilib == Alt64 || Result.SelectedMultilib == Alt32 ||
1862 Result.SelectedMultilib == Altx32)
1863 Result.BiarchSibling = Default;
1864
1865 return true;
1866 }
1867
1868 /// Generic_GCC - A tool chain using the 'gcc' command to perform
1869 /// all subcommands; this relies on gcc translating the majority of
1870 /// command line options.
1871
1872 /// Less-than for GCCVersion, implementing a Strict Weak Ordering.
isOlderThan(int RHSMajor,int RHSMinor,int RHSPatch,StringRef RHSPatchSuffix) const1873 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
1874 int RHSPatch,
1875 StringRef RHSPatchSuffix) const {
1876 if (Major != RHSMajor)
1877 return Major < RHSMajor;
1878 if (Minor != RHSMinor)
1879 return Minor < RHSMinor;
1880 if (Patch != RHSPatch) {
1881 // Note that versions without a specified patch sort higher than those with
1882 // a patch.
1883 if (RHSPatch == -1)
1884 return true;
1885 if (Patch == -1)
1886 return false;
1887
1888 // Otherwise just sort on the patch itself.
1889 return Patch < RHSPatch;
1890 }
1891 if (PatchSuffix != RHSPatchSuffix) {
1892 // Sort empty suffixes higher.
1893 if (RHSPatchSuffix.empty())
1894 return true;
1895 if (PatchSuffix.empty())
1896 return false;
1897
1898 // Provide a lexicographic sort to make this a total ordering.
1899 return PatchSuffix < RHSPatchSuffix;
1900 }
1901
1902 // The versions are equal.
1903 return false;
1904 }
1905
1906 /// Parse a GCCVersion object out of a string of text.
1907 ///
1908 /// This is the primary means of forming GCCVersion objects.
1909 /*static*/
Parse(StringRef VersionText)1910 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) {
1911 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1912 std::pair<StringRef, StringRef> First = VersionText.split('.');
1913 std::pair<StringRef, StringRef> Second = First.second.split('.');
1914
1915 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1916 if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0)
1917 return BadVersion;
1918 GoodVersion.MajorStr = First.first.str();
1919 if (First.second.empty())
1920 return GoodVersion;
1921 StringRef MinorStr = Second.first;
1922 if (Second.second.empty()) {
1923 if (size_t EndNumber = MinorStr.find_first_not_of("0123456789")) {
1924 GoodVersion.PatchSuffix = std::string(MinorStr.substr(EndNumber));
1925 MinorStr = MinorStr.slice(0, EndNumber);
1926 }
1927 }
1928 if (MinorStr.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0)
1929 return BadVersion;
1930 GoodVersion.MinorStr = MinorStr.str();
1931
1932 // First look for a number prefix and parse that if present. Otherwise just
1933 // stash the entire patch string in the suffix, and leave the number
1934 // unspecified. This covers versions strings such as:
1935 // 5 (handled above)
1936 // 4.4
1937 // 4.4-patched
1938 // 4.4.0
1939 // 4.4.x
1940 // 4.4.2-rc4
1941 // 4.4.x-patched
1942 // And retains any patch number it finds.
1943 StringRef PatchText = Second.second;
1944 if (!PatchText.empty()) {
1945 if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) {
1946 // Try to parse the number and any suffix.
1947 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) ||
1948 GoodVersion.Patch < 0)
1949 return BadVersion;
1950 GoodVersion.PatchSuffix = std::string(PatchText.substr(EndNumber));
1951 }
1952 }
1953
1954 return GoodVersion;
1955 }
1956
getGCCToolchainDir(const ArgList & Args,llvm::StringRef SysRoot)1957 static llvm::StringRef getGCCToolchainDir(const ArgList &Args,
1958 llvm::StringRef SysRoot) {
1959 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain);
1960 if (A)
1961 return A->getValue();
1962
1963 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX.
1964 // GCC_INSTALL_PREFIX specifies the gcc installation for the default
1965 // sysroot and is likely not valid with a different sysroot.
1966 if (!SysRoot.empty())
1967 return "";
1968
1969 return GCC_INSTALL_PREFIX;
1970 }
1971
1972 /// Initialize a GCCInstallationDetector from the driver.
1973 ///
1974 /// This performs all of the autodetection and sets up the various paths.
1975 /// Once constructed, a GCCInstallationDetector is essentially immutable.
1976 ///
1977 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
1978 /// should instead pull the target out of the driver. This is currently
1979 /// necessary because the driver doesn't store the final version of the target
1980 /// triple.
init(const llvm::Triple & TargetTriple,const ArgList & Args,ArrayRef<std::string> ExtraTripleAliases)1981 void Generic_GCC::GCCInstallationDetector::init(
1982 const llvm::Triple &TargetTriple, const ArgList &Args,
1983 ArrayRef<std::string> ExtraTripleAliases) {
1984 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
1985 ? TargetTriple.get64BitArchVariant()
1986 : TargetTriple.get32BitArchVariant();
1987 // The library directories which may contain GCC installations.
1988 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
1989 // The compatible GCC triples for this particular architecture.
1990 SmallVector<StringRef, 16> CandidateTripleAliases;
1991 SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
1992 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs,
1993 CandidateTripleAliases, CandidateBiarchLibDirs,
1994 CandidateBiarchTripleAliases);
1995
1996 // Compute the set of prefixes for our search.
1997 SmallVector<std::string, 8> Prefixes;
1998 StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot);
1999 if (GCCToolchainDir != "") {
2000 if (GCCToolchainDir.back() == '/')
2001 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
2002
2003 Prefixes.push_back(std::string(GCCToolchainDir));
2004 } else {
2005 // If we have a SysRoot, try that first.
2006 if (!D.SysRoot.empty()) {
2007 Prefixes.push_back(D.SysRoot);
2008 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
2009 }
2010
2011 // Then look for gcc installed alongside clang.
2012 Prefixes.push_back(D.InstalledDir + "/..");
2013
2014 // Next, look for prefix(es) that correspond to distribution-supplied gcc
2015 // installations.
2016 if (D.SysRoot.empty()) {
2017 // Typically /usr.
2018 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
2019 }
2020
2021 // Try to respect gcc-config on Gentoo if --gcc-toolchain is not provided.
2022 // This avoids accidentally enforcing the system GCC version when using a
2023 // custom toolchain.
2024 SmallVector<StringRef, 16> GentooTestTriples;
2025 // Try to match an exact triple as target triple first.
2026 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for
2027 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu"
2028 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching
2029 // triple x86_64-gentoo-linux-gnu is present.
2030 GentooTestTriples.push_back(TargetTriple.str());
2031 // Check rest of triples.
2032 GentooTestTriples.append(ExtraTripleAliases.begin(),
2033 ExtraTripleAliases.end());
2034 GentooTestTriples.append(CandidateTripleAliases.begin(),
2035 CandidateTripleAliases.end());
2036 if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples,
2037 CandidateBiarchTripleAliases))
2038 return;
2039 }
2040
2041 // Loop over the various components which exist and select the best GCC
2042 // installation available. GCC installs are ranked by version number.
2043 const GCCVersion VersionZero = GCCVersion::Parse("0.0.0");
2044 Version = VersionZero;
2045 for (const std::string &Prefix : Prefixes) {
2046 auto &VFS = D.getVFS();
2047 if (!VFS.exists(Prefix))
2048 continue;
2049 for (StringRef Suffix : CandidateLibDirs) {
2050 const std::string LibDir = concat(Prefix, Suffix);
2051 if (!VFS.exists(LibDir))
2052 continue;
2053 // Maybe filter out <libdir>/gcc and <libdir>/gcc-cross.
2054 bool GCCDirExists = VFS.exists(LibDir + "/gcc");
2055 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross");
2056 // Try to match the exact target triple first.
2057 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, TargetTriple.str(),
2058 false, GCCDirExists, GCCCrossDirExists);
2059 // Try rest of possible triples.
2060 for (StringRef Candidate : ExtraTripleAliases) // Try these first.
2061 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, false,
2062 GCCDirExists, GCCCrossDirExists);
2063 for (StringRef Candidate : CandidateTripleAliases)
2064 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, false,
2065 GCCDirExists, GCCCrossDirExists);
2066 }
2067 for (StringRef Suffix : CandidateBiarchLibDirs) {
2068 const std::string LibDir = Prefix + Suffix.str();
2069 if (!VFS.exists(LibDir))
2070 continue;
2071 bool GCCDirExists = VFS.exists(LibDir + "/gcc");
2072 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross");
2073 for (StringRef Candidate : CandidateBiarchTripleAliases)
2074 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, true,
2075 GCCDirExists, GCCCrossDirExists);
2076 }
2077
2078 // Skip other prefixes once a GCC installation is found.
2079 if (Version > VersionZero)
2080 break;
2081 }
2082 }
2083
print(raw_ostream & OS) const2084 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
2085 for (const auto &InstallPath : CandidateGCCInstallPaths)
2086 OS << "Found candidate GCC installation: " << InstallPath << "\n";
2087
2088 if (!GCCInstallPath.empty())
2089 OS << "Selected GCC installation: " << GCCInstallPath << "\n";
2090
2091 for (const auto &Multilib : Multilibs)
2092 OS << "Candidate multilib: " << Multilib << "\n";
2093
2094 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault())
2095 OS << "Selected multilib: " << SelectedMultilib << "\n";
2096 }
2097
getBiarchSibling(Multilib & M) const2098 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const {
2099 if (BiarchSibling) {
2100 M = BiarchSibling.value();
2101 return true;
2102 }
2103 return false;
2104 }
2105
AddDefaultGCCPrefixes(const llvm::Triple & TargetTriple,SmallVectorImpl<std::string> & Prefixes,StringRef SysRoot)2106 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
2107 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes,
2108 StringRef SysRoot) {
2109 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
2110 // Solaris is a special case.
2111 // The GCC installation is under
2112 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/
2113 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with
2114 // /usr/gcc/<version> as a prefix.
2115
2116 std::string PrefixDir = concat(SysRoot, "/usr/gcc");
2117 std::error_code EC;
2118 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC),
2119 LE;
2120 !EC && LI != LE; LI = LI.increment(EC)) {
2121 StringRef VersionText = llvm::sys::path::filename(LI->path());
2122 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2123
2124 // Filter out obviously bad entries.
2125 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1))
2126 continue;
2127
2128 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str();
2129 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc";
2130 if (!D.getVFS().exists(CandidateLibPath))
2131 continue;
2132
2133 Prefixes.push_back(CandidatePrefix);
2134 }
2135 return;
2136 }
2137
2138 // For Linux, if --sysroot is not specified, look for RHEL/CentOS devtoolsets
2139 // and gcc-toolsets.
2140 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux &&
2141 D.getVFS().exists("/opt/rh")) {
2142 // TODO: We may want to remove this, since the functionality
2143 // can be achieved using config files.
2144 Prefixes.push_back("/opt/rh/gcc-toolset-12/root/usr");
2145 Prefixes.push_back("/opt/rh/gcc-toolset-11/root/usr");
2146 Prefixes.push_back("/opt/rh/gcc-toolset-10/root/usr");
2147 Prefixes.push_back("/opt/rh/devtoolset-12/root/usr");
2148 Prefixes.push_back("/opt/rh/devtoolset-11/root/usr");
2149 Prefixes.push_back("/opt/rh/devtoolset-10/root/usr");
2150 Prefixes.push_back("/opt/rh/devtoolset-9/root/usr");
2151 Prefixes.push_back("/opt/rh/devtoolset-8/root/usr");
2152 Prefixes.push_back("/opt/rh/devtoolset-7/root/usr");
2153 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr");
2154 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr");
2155 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr");
2156 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr");
2157 }
2158
2159 // Fall back to /usr which is used by most non-Solaris systems.
2160 Prefixes.push_back(concat(SysRoot, "/usr"));
2161 }
2162
CollectLibDirsAndTriples(const llvm::Triple & TargetTriple,const llvm::Triple & BiarchTriple,SmallVectorImpl<StringRef> & LibDirs,SmallVectorImpl<StringRef> & TripleAliases,SmallVectorImpl<StringRef> & BiarchLibDirs,SmallVectorImpl<StringRef> & BiarchTripleAliases)2163 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
2164 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
2165 SmallVectorImpl<StringRef> &LibDirs,
2166 SmallVectorImpl<StringRef> &TripleAliases,
2167 SmallVectorImpl<StringRef> &BiarchLibDirs,
2168 SmallVectorImpl<StringRef> &BiarchTripleAliases) {
2169 // Declare a bunch of static data sets that we'll select between below. These
2170 // are specifically designed to always refer to string literals to avoid any
2171 // lifetime or initialization issues.
2172 //
2173 // The *Triples variables hard code some triples so that, for example,
2174 // --target=aarch64 (incomplete triple) can detect lib/aarch64-linux-gnu.
2175 // They are not needed when the user has correct LLVM_DEFAULT_TARGET_TRIPLE
2176 // and always uses the full --target (e.g. --target=aarch64-linux-gnu). The
2177 // lists should shrink over time. Please don't add more elements to *Triples.
2178 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
2179 static const char *const AArch64Triples[] = {
2180 "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-redhat-linux",
2181 "aarch64-suse-linux"};
2182 static const char *const AArch64beLibDirs[] = {"/lib"};
2183 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu",
2184 "aarch64_be-linux-gnu"};
2185
2186 static const char *const ARMLibDirs[] = {"/lib"};
2187 static const char *const ARMTriples[] = {"arm-linux-gnueabi"};
2188 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
2189 "armv7hl-redhat-linux-gnueabi",
2190 "armv6hl-suse-linux-gnueabi",
2191 "armv7hl-suse-linux-gnueabi"};
2192 static const char *const ARMebLibDirs[] = {"/lib"};
2193 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi"};
2194 static const char *const ARMebHFTriples[] = {
2195 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
2196
2197 static const char *const AVRLibDirs[] = {"/lib"};
2198 static const char *const AVRTriples[] = {"avr"};
2199
2200 static const char *const CSKYLibDirs[] = {"/lib"};
2201 static const char *const CSKYTriples[] = {
2202 "csky-linux-gnuabiv2", "csky-linux-uclibcabiv2", "csky-elf-noneabiv2"};
2203
2204 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
2205 static const char *const X86_64Triples[] = {
2206 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
2207 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
2208 "x86_64-redhat-linux", "x86_64-suse-linux",
2209 "x86_64-manbo-linux-gnu", "x86_64-linux-gnu",
2210 "x86_64-slackware-linux", "x86_64-unknown-linux",
2211 "x86_64-amazon-linux"};
2212 static const char *const X32Triples[] = {"x86_64-linux-gnux32",
2213 "x86_64-pc-linux-gnux32"};
2214 static const char *const X32LibDirs[] = {"/libx32", "/lib"};
2215 static const char *const X86LibDirs[] = {"/lib32", "/lib"};
2216 static const char *const X86Triples[] = {
2217 "i586-linux-gnu", "i686-linux-gnu", "i686-pc-linux-gnu",
2218 "i386-redhat-linux6E", "i686-redhat-linux", "i386-redhat-linux",
2219 "i586-suse-linux", "i686-montavista-linux", "i686-gnu",
2220 };
2221
2222 static const char *const M68kLibDirs[] = {"/lib"};
2223 static const char *const M68kTriples[] = {
2224 "m68k-linux-gnu", "m68k-unknown-linux-gnu", "m68k-suse-linux"};
2225
2226 static const char *const MIPSLibDirs[] = {"/libo32", "/lib"};
2227 static const char *const MIPSTriples[] = {
2228 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu",
2229 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"};
2230 static const char *const MIPSELLibDirs[] = {"/libo32", "/lib"};
2231 static const char *const MIPSELTriples[] = {
2232 "mipsel-linux-gnu", "mips-img-linux-gnu", "mipsisa32r6el-linux-gnu"};
2233
2234 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
2235 static const char *const MIPS64Triples[] = {
2236 "mips64-linux-gnu", "mips-mti-linux-gnu",
2237 "mips-img-linux-gnu", "mips64-linux-gnuabi64",
2238 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"};
2239 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
2240 static const char *const MIPS64ELTriples[] = {
2241 "mips64el-linux-gnu", "mips-mti-linux-gnu",
2242 "mips-img-linux-gnu", "mips64el-linux-gnuabi64",
2243 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64"};
2244
2245 static const char *const MIPSN32LibDirs[] = {"/lib32"};
2246 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32",
2247 "mipsisa64r6-linux-gnuabin32"};
2248 static const char *const MIPSN32ELLibDirs[] = {"/lib32"};
2249 static const char *const MIPSN32ELTriples[] = {
2250 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"};
2251
2252 static const char *const MSP430LibDirs[] = {"/lib"};
2253 static const char *const MSP430Triples[] = {"msp430-elf"};
2254
2255 static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
2256 static const char *const PPCTriples[] = {
2257 "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe",
2258 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a
2259 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux".
2260 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"};
2261 static const char *const PPCLELibDirs[] = {"/lib32", "/lib"};
2262 static const char *const PPCLETriples[] = {"powerpcle-linux-gnu",
2263 "powerpcle-unknown-linux-gnu",
2264 "powerpcle-linux-musl"};
2265
2266 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
2267 static const char *const PPC64Triples[] = {
2268 "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu",
2269 "powerpc64-suse-linux", "ppc64-redhat-linux"};
2270 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
2271 static const char *const PPC64LETriples[] = {
2272 "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu",
2273 "powerpc64le-none-linux-gnu", "powerpc64le-suse-linux",
2274 "ppc64le-redhat-linux"};
2275
2276 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"};
2277 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu",
2278 "riscv32-linux-gnu",
2279 "riscv32-unknown-elf"};
2280 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"};
2281 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu",
2282 "riscv64-linux-gnu",
2283 "riscv64-unknown-elf"};
2284
2285 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
2286 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
2287 "sparcv8-linux-gnu"};
2288 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
2289 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
2290 "sparcv9-linux-gnu"};
2291
2292 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
2293 static const char *const SystemZTriples[] = {
2294 "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu",
2295 "s390x-suse-linux", "s390x-redhat-linux"};
2296
2297
2298 using std::begin;
2299 using std::end;
2300
2301 if (TargetTriple.getOS() == llvm::Triple::Solaris) {
2302 static const char *const SolarisLibDirs[] = {"/lib"};
2303 static const char *const SolarisSparcV8Triples[] = {
2304 "sparc-sun-solaris2.11", "sparc-sun-solaris2.12"};
2305 static const char *const SolarisSparcV9Triples[] = {
2306 "sparcv9-sun-solaris2.11", "sparcv9-sun-solaris2.12"};
2307 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11",
2308 "i386-pc-solaris2.12"};
2309 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11",
2310 "x86_64-pc-solaris2.12"};
2311 LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
2312 BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
2313 switch (TargetTriple.getArch()) {
2314 case llvm::Triple::x86:
2315 TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples));
2316 BiarchTripleAliases.append(begin(SolarisX86_64Triples),
2317 end(SolarisX86_64Triples));
2318 break;
2319 case llvm::Triple::x86_64:
2320 TripleAliases.append(begin(SolarisX86_64Triples),
2321 end(SolarisX86_64Triples));
2322 BiarchTripleAliases.append(begin(SolarisX86Triples),
2323 end(SolarisX86Triples));
2324 break;
2325 case llvm::Triple::sparc:
2326 TripleAliases.append(begin(SolarisSparcV8Triples),
2327 end(SolarisSparcV8Triples));
2328 BiarchTripleAliases.append(begin(SolarisSparcV9Triples),
2329 end(SolarisSparcV9Triples));
2330 break;
2331 case llvm::Triple::sparcv9:
2332 TripleAliases.append(begin(SolarisSparcV9Triples),
2333 end(SolarisSparcV9Triples));
2334 BiarchTripleAliases.append(begin(SolarisSparcV8Triples),
2335 end(SolarisSparcV8Triples));
2336 break;
2337 default:
2338 break;
2339 }
2340 return;
2341 }
2342
2343 // Android targets should not use GNU/Linux tools or libraries.
2344 if (TargetTriple.isAndroid()) {
2345 static const char *const AArch64AndroidTriples[] = {
2346 "aarch64-linux-android"};
2347 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"};
2348 static const char *const MIPSELAndroidTriples[] = {"mipsel-linux-android"};
2349 static const char *const MIPS64ELAndroidTriples[] = {
2350 "mips64el-linux-android"};
2351 static const char *const X86AndroidTriples[] = {"i686-linux-android"};
2352 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"};
2353
2354 switch (TargetTriple.getArch()) {
2355 case llvm::Triple::aarch64:
2356 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2357 TripleAliases.append(begin(AArch64AndroidTriples),
2358 end(AArch64AndroidTriples));
2359 break;
2360 case llvm::Triple::arm:
2361 case llvm::Triple::thumb:
2362 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2363 TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples));
2364 break;
2365 case llvm::Triple::mipsel:
2366 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2367 TripleAliases.append(begin(MIPSELAndroidTriples),
2368 end(MIPSELAndroidTriples));
2369 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2370 BiarchTripleAliases.append(begin(MIPS64ELAndroidTriples),
2371 end(MIPS64ELAndroidTriples));
2372 break;
2373 case llvm::Triple::mips64el:
2374 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2375 TripleAliases.append(begin(MIPS64ELAndroidTriples),
2376 end(MIPS64ELAndroidTriples));
2377 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2378 BiarchTripleAliases.append(begin(MIPSELAndroidTriples),
2379 end(MIPSELAndroidTriples));
2380 break;
2381 case llvm::Triple::x86_64:
2382 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2383 TripleAliases.append(begin(X86_64AndroidTriples),
2384 end(X86_64AndroidTriples));
2385 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2386 BiarchTripleAliases.append(begin(X86AndroidTriples),
2387 end(X86AndroidTriples));
2388 break;
2389 case llvm::Triple::x86:
2390 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2391 TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples));
2392 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2393 BiarchTripleAliases.append(begin(X86_64AndroidTriples),
2394 end(X86_64AndroidTriples));
2395 break;
2396 default:
2397 break;
2398 }
2399
2400 return;
2401 }
2402
2403 switch (TargetTriple.getArch()) {
2404 case llvm::Triple::aarch64:
2405 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2406 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2407 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2408 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2409 break;
2410 case llvm::Triple::aarch64_be:
2411 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2412 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2413 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2414 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2415 break;
2416 case llvm::Triple::arm:
2417 case llvm::Triple::thumb:
2418 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2419 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
2420 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples));
2421 } else {
2422 TripleAliases.append(begin(ARMTriples), end(ARMTriples));
2423 }
2424 break;
2425 case llvm::Triple::armeb:
2426 case llvm::Triple::thumbeb:
2427 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs));
2428 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) {
2429 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples));
2430 } else {
2431 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples));
2432 }
2433 break;
2434 case llvm::Triple::avr:
2435 LibDirs.append(begin(AVRLibDirs), end(AVRLibDirs));
2436 TripleAliases.append(begin(AVRTriples), end(AVRTriples));
2437 break;
2438 case llvm::Triple::csky:
2439 LibDirs.append(begin(CSKYLibDirs), end(CSKYLibDirs));
2440 TripleAliases.append(begin(CSKYTriples), end(CSKYTriples));
2441 break;
2442 case llvm::Triple::x86_64:
2443 if (TargetTriple.isX32()) {
2444 LibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2445 TripleAliases.append(begin(X32Triples), end(X32Triples));
2446 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2447 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2448 } else {
2449 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2450 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2451 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2452 BiarchTripleAliases.append(begin(X32Triples), end(X32Triples));
2453 }
2454 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2455 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples));
2456 break;
2457 case llvm::Triple::x86:
2458 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2459 // MCU toolchain is 32 bit only and its triple alias is TargetTriple
2460 // itself, which will be appended below.
2461 if (!TargetTriple.isOSIAMCU()) {
2462 TripleAliases.append(begin(X86Triples), end(X86Triples));
2463 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2464 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2465 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2466 BiarchTripleAliases.append(begin(X32Triples), end(X32Triples));
2467 }
2468 break;
2469 case llvm::Triple::m68k:
2470 LibDirs.append(begin(M68kLibDirs), end(M68kLibDirs));
2471 TripleAliases.append(begin(M68kTriples), end(M68kTriples));
2472 break;
2473 case llvm::Triple::mips:
2474 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2475 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2476 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2477 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2478 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2479 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2480 break;
2481 case llvm::Triple::mipsel:
2482 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2483 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2484 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2485 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2486 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2487 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2488 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2489 break;
2490 case llvm::Triple::mips64:
2491 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2492 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2493 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2494 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2495 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2496 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2497 break;
2498 case llvm::Triple::mips64el:
2499 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2500 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2501 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2502 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2503 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2504 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2505 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2506 break;
2507 case llvm::Triple::msp430:
2508 LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs));
2509 TripleAliases.append(begin(MSP430Triples), end(MSP430Triples));
2510 break;
2511 case llvm::Triple::ppc:
2512 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2513 TripleAliases.append(begin(PPCTriples), end(PPCTriples));
2514 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2515 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2516 break;
2517 case llvm::Triple::ppcle:
2518 LibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs));
2519 TripleAliases.append(begin(PPCLETriples), end(PPCLETriples));
2520 BiarchLibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
2521 BiarchTripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
2522 break;
2523 case llvm::Triple::ppc64:
2524 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2525 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2526 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2527 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples));
2528 break;
2529 case llvm::Triple::ppc64le:
2530 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
2531 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
2532 BiarchLibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs));
2533 BiarchTripleAliases.append(begin(PPCLETriples), end(PPCLETriples));
2534 break;
2535 case llvm::Triple::riscv32:
2536 LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2537 TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
2538 BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
2539 BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
2540 break;
2541 case llvm::Triple::riscv64:
2542 LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
2543 TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
2544 BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2545 BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
2546 break;
2547 case llvm::Triple::sparc:
2548 case llvm::Triple::sparcel:
2549 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2550 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2551 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2552 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2553 break;
2554 case llvm::Triple::sparcv9:
2555 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2556 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2557 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2558 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2559 break;
2560 case llvm::Triple::systemz:
2561 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs));
2562 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples));
2563 break;
2564 default:
2565 // By default, just rely on the standard lib directories and the original
2566 // triple.
2567 break;
2568 }
2569
2570 // Always append the drivers target triple to the end, in case it doesn't
2571 // match any of our aliases.
2572 TripleAliases.push_back(TargetTriple.str());
2573
2574 // Also include the multiarch variant if it's different.
2575 if (TargetTriple.str() != BiarchTriple.str())
2576 BiarchTripleAliases.push_back(BiarchTriple.str());
2577 }
2578
ScanGCCForMultilibs(const llvm::Triple & TargetTriple,const ArgList & Args,StringRef Path,bool NeedsBiarchSuffix)2579 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2580 const llvm::Triple &TargetTriple, const ArgList &Args,
2581 StringRef Path, bool NeedsBiarchSuffix) {
2582 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2583 DetectedMultilibs Detected;
2584
2585 // Android standalone toolchain could have multilibs for ARM and Thumb.
2586 // Debian mips multilibs behave more like the rest of the biarch ones,
2587 // so handle them there
2588 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) {
2589 // It should also work without multilibs in a simplified toolchain.
2590 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected);
2591 } else if (TargetTriple.isCSKY()) {
2592 findCSKYMultilibs(D, TargetTriple, Path, Args, Detected);
2593 } else if (TargetTriple.isMIPS()) {
2594 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected))
2595 return false;
2596 } else if (TargetTriple.isRISCV()) {
2597 findRISCVMultilibs(D, TargetTriple, Path, Args, Detected);
2598 } else if (isMSP430(TargetArch)) {
2599 findMSP430Multilibs(D, TargetTriple, Path, Args, Detected);
2600 } else if (TargetArch == llvm::Triple::avr) {
2601 // AVR has no multilibs.
2602 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2603 NeedsBiarchSuffix, Detected)) {
2604 return false;
2605 }
2606
2607 Multilibs = Detected.Multilibs;
2608 SelectedMultilib = Detected.SelectedMultilib;
2609 BiarchSibling = Detected.BiarchSibling;
2610
2611 return true;
2612 }
2613
ScanLibDirForGCCTriple(const llvm::Triple & TargetTriple,const ArgList & Args,const std::string & LibDir,StringRef CandidateTriple,bool NeedsBiarchSuffix,bool GCCDirExists,bool GCCCrossDirExists)2614 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2615 const llvm::Triple &TargetTriple, const ArgList &Args,
2616 const std::string &LibDir, StringRef CandidateTriple,
2617 bool NeedsBiarchSuffix, bool GCCDirExists, bool GCCCrossDirExists) {
2618 // Locations relative to the system lib directory where GCC's triple-specific
2619 // directories might reside.
2620 struct GCCLibSuffix {
2621 // Path from system lib directory to GCC triple-specific directory.
2622 std::string LibSuffix;
2623 // Path from GCC triple-specific directory back to system lib directory.
2624 // This is one '..' component per component in LibSuffix.
2625 StringRef ReversePath;
2626 // Whether this library suffix is relevant for the triple.
2627 bool Active;
2628 } Suffixes[] = {
2629 // This is the normal place.
2630 {"gcc/" + CandidateTriple.str(), "../..", GCCDirExists},
2631
2632 // Debian puts cross-compilers in gcc-cross.
2633 {"gcc-cross/" + CandidateTriple.str(), "../..", GCCCrossDirExists},
2634
2635 // The Freescale PPC SDK has the gcc libraries in
2636 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2637 // this on Freescale triples, though, since some systems put a *lot* of
2638 // files in that location, not just GCC installation data.
2639 {CandidateTriple.str(), "..",
2640 TargetTriple.getVendor() == llvm::Triple::Freescale ||
2641 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}};
2642
2643 for (auto &Suffix : Suffixes) {
2644 if (!Suffix.Active)
2645 continue;
2646
2647 StringRef LibSuffix = Suffix.LibSuffix;
2648 std::error_code EC;
2649 for (llvm::vfs::directory_iterator
2650 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC),
2651 LE;
2652 !EC && LI != LE; LI = LI.increment(EC)) {
2653 StringRef VersionText = llvm::sys::path::filename(LI->path());
2654 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2655 if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2656 if (!CandidateGCCInstallPaths.insert(std::string(LI->path())).second)
2657 continue; // Saw this path before; no need to look at it again.
2658 if (CandidateVersion.isOlderThan(4, 1, 1))
2659 continue;
2660 if (CandidateVersion <= Version)
2661 continue;
2662
2663 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(),
2664 NeedsBiarchSuffix))
2665 continue;
2666
2667 Version = CandidateVersion;
2668 GCCTriple.setTriple(CandidateTriple);
2669 // FIXME: We hack together the directory name here instead of
2670 // using LI to ensure stable path separators across Windows and
2671 // Linux.
2672 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2673 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str();
2674 IsValid = true;
2675 }
2676 }
2677 }
2678
ScanGentooConfigs(const llvm::Triple & TargetTriple,const ArgList & Args,const SmallVectorImpl<StringRef> & CandidateTriples,const SmallVectorImpl<StringRef> & CandidateBiarchTriples)2679 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs(
2680 const llvm::Triple &TargetTriple, const ArgList &Args,
2681 const SmallVectorImpl<StringRef> &CandidateTriples,
2682 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) {
2683 if (!D.getVFS().exists(concat(D.SysRoot, GentooConfigDir)))
2684 return false;
2685
2686 for (StringRef CandidateTriple : CandidateTriples) {
2687 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
2688 return true;
2689 }
2690
2691 for (StringRef CandidateTriple : CandidateBiarchTriples) {
2692 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true))
2693 return true;
2694 }
2695 return false;
2696 }
2697
ScanGentooGccConfig(const llvm::Triple & TargetTriple,const ArgList & Args,StringRef CandidateTriple,bool NeedsBiarchSuffix)2698 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2699 const llvm::Triple &TargetTriple, const ArgList &Args,
2700 StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2701 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2702 D.getVFS().getBufferForFile(concat(D.SysRoot, GentooConfigDir,
2703 "/config-" + CandidateTriple.str()));
2704 if (File) {
2705 SmallVector<StringRef, 2> Lines;
2706 File.get()->getBuffer().split(Lines, "\n");
2707 for (StringRef Line : Lines) {
2708 Line = Line.trim();
2709 // CURRENT=triple-version
2710 if (!Line.consume_front("CURRENT="))
2711 continue;
2712 // Process the config file pointed to by CURRENT.
2713 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile =
2714 D.getVFS().getBufferForFile(
2715 concat(D.SysRoot, GentooConfigDir, "/" + Line));
2716 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-');
2717 // List of paths to scan for libraries.
2718 SmallVector<StringRef, 4> GentooScanPaths;
2719 // Scan the Config file to find installed GCC libraries path.
2720 // Typical content of the GCC config file:
2721 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/
2722 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32"
2723 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man"
2724 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info"
2725 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4"
2726 // We are looking for the paths listed in LDPATH=... .
2727 if (ConfigFile) {
2728 SmallVector<StringRef, 2> ConfigLines;
2729 ConfigFile.get()->getBuffer().split(ConfigLines, "\n");
2730 for (StringRef ConfLine : ConfigLines) {
2731 ConfLine = ConfLine.trim();
2732 if (ConfLine.consume_front("LDPATH=")) {
2733 // Drop '"' from front and back if present.
2734 ConfLine.consume_back("\"");
2735 ConfLine.consume_front("\"");
2736 // Get all paths sperated by ':'
2737 ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false);
2738 }
2739 }
2740 }
2741 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}.
2742 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/"
2743 + ActiveVersion.second.str();
2744 GentooScanPaths.push_back(StringRef(basePath));
2745
2746 // Scan all paths for GCC libraries.
2747 for (const auto &GentooScanPath : GentooScanPaths) {
2748 std::string GentooPath = concat(D.SysRoot, GentooScanPath);
2749 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) {
2750 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath,
2751 NeedsBiarchSuffix))
2752 continue;
2753
2754 Version = GCCVersion::Parse(ActiveVersion.second);
2755 GCCInstallPath = GentooPath;
2756 GCCParentLibPath = GentooPath + std::string("/../../..");
2757 GCCTriple.setTriple(ActiveVersion.first);
2758 IsValid = true;
2759 return true;
2760 }
2761 }
2762 }
2763 }
2764
2765 return false;
2766 }
2767
Generic_GCC(const Driver & D,const llvm::Triple & Triple,const ArgList & Args)2768 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
2769 const ArgList &Args)
2770 : ToolChain(D, Triple, Args), GCCInstallation(D),
2771 CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args) {
2772 getProgramPaths().push_back(getDriver().getInstalledDir());
2773 if (getDriver().getInstalledDir() != getDriver().Dir)
2774 getProgramPaths().push_back(getDriver().Dir);
2775 }
2776
~Generic_GCC()2777 Generic_GCC::~Generic_GCC() {}
2778
getTool(Action::ActionClass AC) const2779 Tool *Generic_GCC::getTool(Action::ActionClass AC) const {
2780 switch (AC) {
2781 case Action::PreprocessJobClass:
2782 if (!Preprocess)
2783 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this));
2784 return Preprocess.get();
2785 case Action::CompileJobClass:
2786 if (!Compile)
2787 Compile.reset(new tools::gcc::Compiler(*this));
2788 return Compile.get();
2789 default:
2790 return ToolChain::getTool(AC);
2791 }
2792 }
2793
buildAssembler() const2794 Tool *Generic_GCC::buildAssembler() const {
2795 return new tools::gnutools::Assembler(*this);
2796 }
2797
buildLinker() const2798 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
2799
printVerboseInfo(raw_ostream & OS) const2800 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
2801 // Print the information about how we detected the GCC installation.
2802 GCCInstallation.print(OS);
2803 CudaInstallation.print(OS);
2804 RocmInstallation.print(OS);
2805 }
2806
IsUnwindTablesDefault(const ArgList & Args) const2807 bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const {
2808 switch (getArch()) {
2809 case llvm::Triple::aarch64:
2810 case llvm::Triple::ppc:
2811 case llvm::Triple::ppcle:
2812 case llvm::Triple::ppc64:
2813 case llvm::Triple::ppc64le:
2814 case llvm::Triple::x86:
2815 case llvm::Triple::x86_64:
2816 return true;
2817 default:
2818 return false;
2819 }
2820 }
2821
isPICDefault() const2822 bool Generic_GCC::isPICDefault() const {
2823 switch (getArch()) {
2824 case llvm::Triple::x86_64:
2825 return getTriple().isOSWindows();
2826 case llvm::Triple::mips64:
2827 case llvm::Triple::mips64el:
2828 return true;
2829 default:
2830 return false;
2831 }
2832 }
2833
isPIEDefault(const llvm::opt::ArgList & Args) const2834 bool Generic_GCC::isPIEDefault(const llvm::opt::ArgList &Args) const {
2835 return false;
2836 }
2837
isPICDefaultForced() const2838 bool Generic_GCC::isPICDefaultForced() const {
2839 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
2840 }
2841
IsIntegratedAssemblerDefault() const2842 bool Generic_GCC::IsIntegratedAssemblerDefault() const {
2843 switch (getTriple().getArch()) {
2844 case llvm::Triple::aarch64:
2845 case llvm::Triple::aarch64_be:
2846 case llvm::Triple::arm:
2847 case llvm::Triple::armeb:
2848 case llvm::Triple::avr:
2849 case llvm::Triple::bpfel:
2850 case llvm::Triple::bpfeb:
2851 case llvm::Triple::csky:
2852 case llvm::Triple::hexagon:
2853 case llvm::Triple::lanai:
2854 case llvm::Triple::m68k:
2855 case llvm::Triple::mips:
2856 case llvm::Triple::mipsel:
2857 case llvm::Triple::mips64:
2858 case llvm::Triple::mips64el:
2859 case llvm::Triple::msp430:
2860 case llvm::Triple::ppc:
2861 case llvm::Triple::ppcle:
2862 case llvm::Triple::ppc64:
2863 case llvm::Triple::ppc64le:
2864 case llvm::Triple::riscv32:
2865 case llvm::Triple::riscv64:
2866 case llvm::Triple::sparc:
2867 case llvm::Triple::sparcel:
2868 case llvm::Triple::sparcv9:
2869 case llvm::Triple::systemz:
2870 case llvm::Triple::thumb:
2871 case llvm::Triple::thumbeb:
2872 case llvm::Triple::ve:
2873 case llvm::Triple::x86:
2874 case llvm::Triple::x86_64:
2875 return true;
2876 default:
2877 return false;
2878 }
2879 }
2880
PushPPaths(ToolChain::path_list & PPaths)2881 void Generic_GCC::PushPPaths(ToolChain::path_list &PPaths) {
2882 // Cross-compiling binutils and GCC installations (vanilla and openSUSE at
2883 // least) put various tools in a triple-prefixed directory off of the parent
2884 // of the GCC installation. We use the GCC triple here to ensure that we end
2885 // up with tools that support the same amount of cross compiling as the
2886 // detected GCC installation. For example, if we find a GCC installation
2887 // targeting x86_64, but it is a bi-arch GCC installation, it can also be
2888 // used to target i386.
2889 if (GCCInstallation.isValid()) {
2890 PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" +
2891 GCCInstallation.getTriple().str() + "/bin")
2892 .str());
2893 }
2894 }
2895
AddMultilibPaths(const Driver & D,const std::string & SysRoot,const std::string & OSLibDir,const std::string & MultiarchTriple,path_list & Paths)2896 void Generic_GCC::AddMultilibPaths(const Driver &D,
2897 const std::string &SysRoot,
2898 const std::string &OSLibDir,
2899 const std::string &MultiarchTriple,
2900 path_list &Paths) {
2901 // Add the multilib suffixed paths where they are available.
2902 if (GCCInstallation.isValid()) {
2903 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
2904 const std::string &LibPath =
2905 std::string(GCCInstallation.getParentLibPath());
2906
2907 // Sourcery CodeBench MIPS toolchain holds some libraries under
2908 // a biarch-like suffix of the GCC installation.
2909 if (const auto &PathsCallback = Multilibs.filePathsCallback())
2910 for (const auto &Path : PathsCallback(SelectedMultilib))
2911 addPathIfExists(D, GCCInstallation.getInstallPath() + Path, Paths);
2912
2913 // Add lib/gcc/$triple/$version, with an optional /multilib suffix.
2914 addPathIfExists(
2915 D, GCCInstallation.getInstallPath() + SelectedMultilib.gccSuffix(),
2916 Paths);
2917
2918 // Add lib/gcc/$triple/$libdir
2919 // For GCC built with --enable-version-specific-runtime-libs.
2920 addPathIfExists(D, GCCInstallation.getInstallPath() + "/../" + OSLibDir,
2921 Paths);
2922
2923 // GCC cross compiling toolchains will install target libraries which ship
2924 // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as
2925 // any part of the GCC installation in
2926 // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat
2927 // debatable, but is the reality today. We need to search this tree even
2928 // when we have a sysroot somewhere else. It is the responsibility of
2929 // whomever is doing the cross build targeting a sysroot using a GCC
2930 // installation that is *not* within the system root to ensure two things:
2931 //
2932 // 1) Any DSOs that are linked in from this tree or from the install path
2933 // above must be present on the system root and found via an
2934 // appropriate rpath.
2935 // 2) There must not be libraries installed into
2936 // <prefix>/<triple>/<libdir> unless they should be preferred over
2937 // those within the system root.
2938 //
2939 // Note that this matches the GCC behavior. See the below comment for where
2940 // Clang diverges from GCC's behavior.
2941 addPathIfExists(D,
2942 LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir +
2943 SelectedMultilib.osSuffix(),
2944 Paths);
2945
2946 // If the GCC installation we found is inside of the sysroot, we want to
2947 // prefer libraries installed in the parent prefix of the GCC installation.
2948 // It is important to *not* use these paths when the GCC installation is
2949 // outside of the system root as that can pick up unintended libraries.
2950 // This usually happens when there is an external cross compiler on the
2951 // host system, and a more minimal sysroot available that is the target of
2952 // the cross. Note that GCC does include some of these directories in some
2953 // configurations but this seems somewhere between questionable and simply
2954 // a bug.
2955 if (StringRef(LibPath).startswith(SysRoot))
2956 addPathIfExists(D, LibPath + "/../" + OSLibDir, Paths);
2957 }
2958 }
2959
AddMultiarchPaths(const Driver & D,const std::string & SysRoot,const std::string & OSLibDir,path_list & Paths)2960 void Generic_GCC::AddMultiarchPaths(const Driver &D,
2961 const std::string &SysRoot,
2962 const std::string &OSLibDir,
2963 path_list &Paths) {
2964 if (GCCInstallation.isValid()) {
2965 const std::string &LibPath =
2966 std::string(GCCInstallation.getParentLibPath());
2967 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
2968 const Multilib &Multilib = GCCInstallation.getMultilib();
2969 addPathIfExists(
2970 D, LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(),
2971 Paths);
2972 }
2973 }
2974
AddMultilibIncludeArgs(const ArgList & DriverArgs,ArgStringList & CC1Args) const2975 void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs,
2976 ArgStringList &CC1Args) const {
2977 // Add include directories specific to the selected multilib set and multilib.
2978 if (!GCCInstallation.isValid())
2979 return;
2980 // gcc TOOL_INCLUDE_DIR.
2981 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
2982 std::string LibPath(GCCInstallation.getParentLibPath());
2983 addSystemInclude(DriverArgs, CC1Args,
2984 Twine(LibPath) + "/../" + GCCTriple.str() + "/include");
2985
2986 const auto &Callback = Multilibs.includeDirsCallback();
2987 if (Callback) {
2988 for (const auto &Path : Callback(GCCInstallation.getMultilib()))
2989 addExternCSystemIncludeIfExists(DriverArgs, CC1Args,
2990 GCCInstallation.getInstallPath() + Path);
2991 }
2992 }
2993
AddClangCXXStdlibIncludeArgs(const ArgList & DriverArgs,ArgStringList & CC1Args) const2994 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
2995 ArgStringList &CC1Args) const {
2996 if (DriverArgs.hasArg(options::OPT_nostdinc, options::OPT_nostdincxx,
2997 options::OPT_nostdlibinc))
2998 return;
2999
3000 switch (GetCXXStdlibType(DriverArgs)) {
3001 case ToolChain::CST_Libcxx:
3002 addLibCxxIncludePaths(DriverArgs, CC1Args);
3003 break;
3004
3005 case ToolChain::CST_Libstdcxx:
3006 addLibStdCxxIncludePaths(DriverArgs, CC1Args);
3007 break;
3008 }
3009 }
3010
3011 void
addLibCxxIncludePaths(const llvm::opt::ArgList & DriverArgs,llvm::opt::ArgStringList & CC1Args) const3012 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3013 llvm::opt::ArgStringList &CC1Args) const {
3014 const Driver &D = getDriver();
3015 std::string SysRoot = computeSysRoot();
3016 std::string Target = getTripleString();
3017
3018 auto AddIncludePath = [&](std::string Path) {
3019 std::string Version = detectLibcxxVersion(Path);
3020 if (Version.empty())
3021 return false;
3022
3023 // First add the per-target include path if it exists.
3024 std::string TargetDir = Path + "/" + Target + "/c++/" + Version;
3025 if (D.getVFS().exists(TargetDir))
3026 addSystemInclude(DriverArgs, CC1Args, TargetDir);
3027
3028 // Second add the generic one.
3029 addSystemInclude(DriverArgs, CC1Args, Path + "/c++/" + Version);
3030 return true;
3031 };
3032
3033 // Android never uses the libc++ headers installed alongside the toolchain,
3034 // which are generally incompatible with the NDK libraries anyway.
3035 if (!getTriple().isAndroid())
3036 if (AddIncludePath(getDriver().Dir + "/../include"))
3037 return;
3038 // If this is a development, non-installed, clang, libcxx will
3039 // not be found at ../include/c++ but it likely to be found at
3040 // one of the following two locations:
3041 if (AddIncludePath(concat(SysRoot, "/usr/local/include")))
3042 return;
3043 if (AddIncludePath(concat(SysRoot, "/usr/include")))
3044 return;
3045 }
3046
addLibStdCXXIncludePaths(Twine IncludeDir,StringRef Triple,Twine IncludeSuffix,const llvm::opt::ArgList & DriverArgs,llvm::opt::ArgStringList & CC1Args,bool DetectDebian) const3047 bool Generic_GCC::addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple,
3048 Twine IncludeSuffix,
3049 const llvm::opt::ArgList &DriverArgs,
3050 llvm::opt::ArgStringList &CC1Args,
3051 bool DetectDebian) const {
3052 if (!getVFS().exists(IncludeDir))
3053 return false;
3054
3055 // Debian native gcc uses g++-multiarch-incdir.diff which uses
3056 // include/x86_64-linux-gnu/c++/10$IncludeSuffix instead of
3057 // include/c++/10/x86_64-linux-gnu$IncludeSuffix.
3058 std::string Dir = IncludeDir.str();
3059 StringRef Include =
3060 llvm::sys::path::parent_path(llvm::sys::path::parent_path(Dir));
3061 std::string Path =
3062 (Include + "/" + Triple + Dir.substr(Include.size()) + IncludeSuffix)
3063 .str();
3064 if (DetectDebian && !getVFS().exists(Path))
3065 return false;
3066
3067 // GPLUSPLUS_INCLUDE_DIR
3068 addSystemInclude(DriverArgs, CC1Args, IncludeDir);
3069 // GPLUSPLUS_TOOL_INCLUDE_DIR. If Triple is not empty, add a target-dependent
3070 // include directory.
3071 if (DetectDebian)
3072 addSystemInclude(DriverArgs, CC1Args, Path);
3073 else if (!Triple.empty())
3074 addSystemInclude(DriverArgs, CC1Args,
3075 IncludeDir + "/" + Triple + IncludeSuffix);
3076 // GPLUSPLUS_BACKWARD_INCLUDE_DIR
3077 addSystemInclude(DriverArgs, CC1Args, IncludeDir + "/backward");
3078 return true;
3079 }
3080
addGCCLibStdCxxIncludePaths(const llvm::opt::ArgList & DriverArgs,llvm::opt::ArgStringList & CC1Args,StringRef DebianMultiarch) const3081 bool Generic_GCC::addGCCLibStdCxxIncludePaths(
3082 const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args,
3083 StringRef DebianMultiarch) const {
3084 assert(GCCInstallation.isValid());
3085
3086 // By default, look for the C++ headers in an include directory adjacent to
3087 // the lib directory of the GCC installation. Note that this is expect to be
3088 // equivalent to '/usr/include/c++/X.Y' in almost all cases.
3089 StringRef LibDir = GCCInstallation.getParentLibPath();
3090 StringRef InstallDir = GCCInstallation.getInstallPath();
3091 StringRef TripleStr = GCCInstallation.getTriple().str();
3092 const Multilib &Multilib = GCCInstallation.getMultilib();
3093 const GCCVersion &Version = GCCInstallation.getVersion();
3094
3095 // Try /../$triple/include/c++/$version (gcc --print-multiarch is not empty).
3096 if (addLibStdCXXIncludePaths(
3097 LibDir.str() + "/../" + TripleStr + "/include/c++/" + Version.Text,
3098 TripleStr, Multilib.includeSuffix(), DriverArgs, CC1Args))
3099 return true;
3100
3101 // Try /gcc/$triple/$version/include/c++/ (gcc --print-multiarch is not
3102 // empty). Like above but for GCC built with
3103 // --enable-version-specific-runtime-libs.
3104 if (addLibStdCXXIncludePaths(LibDir.str() + "/gcc/" + TripleStr + "/" +
3105 Version.Text + "/include/c++/",
3106 TripleStr, Multilib.includeSuffix(), DriverArgs,
3107 CC1Args))
3108 return true;
3109
3110 // Detect Debian g++-multiarch-incdir.diff.
3111 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text,
3112 DebianMultiarch, Multilib.includeSuffix(),
3113 DriverArgs, CC1Args, /*Debian=*/true))
3114 return true;
3115
3116 // Try /../include/c++/$version (gcc --print-multiarch is empty).
3117 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text,
3118 TripleStr, Multilib.includeSuffix(), DriverArgs,
3119 CC1Args))
3120 return true;
3121
3122 // Otherwise, fall back on a bunch of options which don't use multiarch
3123 // layouts for simplicity.
3124 const std::string LibStdCXXIncludePathCandidates[] = {
3125 // Gentoo is weird and places its headers inside the GCC install,
3126 // so if the first attempt to find the headers fails, try these patterns.
3127 InstallDir.str() + "/include/g++-v" + Version.Text,
3128 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." +
3129 Version.MinorStr,
3130 InstallDir.str() + "/include/g++-v" + Version.MajorStr,
3131 };
3132
3133 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) {
3134 if (addLibStdCXXIncludePaths(IncludePath, TripleStr,
3135 Multilib.includeSuffix(), DriverArgs, CC1Args))
3136 return true;
3137 }
3138 return false;
3139 }
3140
3141 void
addLibStdCxxIncludePaths(const llvm::opt::ArgList & DriverArgs,llvm::opt::ArgStringList & CC1Args) const3142 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3143 llvm::opt::ArgStringList &CC1Args) const {
3144 if (GCCInstallation.isValid()) {
3145 addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args,
3146 GCCInstallation.getTriple().str());
3147 }
3148 }
3149
3150 llvm::opt::DerivedArgList *
TranslateArgs(const llvm::opt::DerivedArgList & Args,StringRef,Action::OffloadKind DeviceOffloadKind) const3151 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef,
3152 Action::OffloadKind DeviceOffloadKind) const {
3153
3154 // If this tool chain is used for an OpenMP offloading device we have to make
3155 // sure we always generate a shared library regardless of the commands the
3156 // user passed to the host. This is required because the runtime library
3157 // is required to load the device image dynamically at run time.
3158 if (DeviceOffloadKind == Action::OFK_OpenMP) {
3159 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
3160 const OptTable &Opts = getDriver().getOpts();
3161
3162 // Request the shared library. Given that these options are decided
3163 // implicitly, they do not refer to any base argument.
3164 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared));
3165 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC));
3166
3167 // Filter all the arguments we don't care passing to the offloading
3168 // toolchain as they can mess up with the creation of a shared library.
3169 for (auto *A : Args) {
3170 switch ((options::ID)A->getOption().getID()) {
3171 default:
3172 DAL->append(A);
3173 break;
3174 case options::OPT_shared:
3175 case options::OPT_dynamic:
3176 case options::OPT_static:
3177 case options::OPT_fPIC:
3178 case options::OPT_fno_PIC:
3179 case options::OPT_fpic:
3180 case options::OPT_fno_pic:
3181 case options::OPT_fPIE:
3182 case options::OPT_fno_PIE:
3183 case options::OPT_fpie:
3184 case options::OPT_fno_pie:
3185 break;
3186 }
3187 }
3188 return DAL;
3189 }
3190 return nullptr;
3191 }
3192
anchor()3193 void Generic_ELF::anchor() {}
3194
addClangTargetOptions(const ArgList & DriverArgs,ArgStringList & CC1Args,Action::OffloadKind) const3195 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
3196 ArgStringList &CC1Args,
3197 Action::OffloadKind) const {
3198 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
3199 options::OPT_fno_use_init_array, true))
3200 CC1Args.push_back("-fno-use-init-array");
3201 }
3202