clang 22.0.0git
Gnu.cpp
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1//===--- Gnu.cpp - Gnu Tool and ToolChain Implementations -------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "Gnu.h"
10#include "Arch/ARM.h"
11#include "Arch/CSKY.h"
12#include "Arch/LoongArch.h"
13#include "Arch/Mips.h"
14#include "Arch/PPC.h"
15#include "Arch/RISCV.h"
16#include "Arch/Sparc.h"
17#include "Arch/SystemZ.h"
18#include "clang/Config/config.h" // for GCC_INSTALL_PREFIX
21#include "clang/Driver/Driver.h"
24#include "clang/Driver/Tool.h"
26#include "llvm/ADT/StringSet.h"
27#include "llvm/ADT/Twine.h"
28#include "llvm/Option/ArgList.h"
29#include "llvm/Support/CodeGen.h"
30#include "llvm/Support/Path.h"
31#include "llvm/Support/VirtualFileSystem.h"
32#include "llvm/TargetParser/RISCVISAInfo.h"
33#include "llvm/TargetParser/TargetParser.h"
34#include <system_error>
35
36using namespace clang::driver;
37using namespace clang::driver::toolchains;
38using namespace clang;
39using namespace llvm::opt;
40
43
44static bool forwardToGCC(const Option &O) {
45 // LinkerInput options have been forwarded. Don't duplicate.
46 if (O.hasFlag(options::LinkerInput))
47 return false;
48 return O.matches(options::OPT_Link_Group) || O.hasFlag(options::LinkOption);
49}
50
51// Switch CPU names not recognized by GNU assembler to a close CPU that it does
52// recognize, instead of a lower march from being picked in the absence of a cpu
53// flag.
54static void normalizeCPUNamesForAssembler(const ArgList &Args,
55 ArgStringList &CmdArgs) {
56 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) {
57 StringRef CPUArg(A->getValue());
58 if (CPUArg.equals_insensitive("krait"))
59 CmdArgs.push_back("-mcpu=cortex-a15");
60 else if (CPUArg.equals_insensitive("kryo"))
61 CmdArgs.push_back("-mcpu=cortex-a57");
62 else
63 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ);
64 }
65}
66
68 const InputInfo &Output,
69 const InputInfoList &Inputs,
70 const ArgList &Args,
71 const char *LinkingOutput) const {
72 const Driver &D = getToolChain().getDriver();
73 ArgStringList CmdArgs;
74
75 for (const auto &A : Args) {
76 if (forwardToGCC(A->getOption())) {
77 // It is unfortunate that we have to claim here, as this means
78 // we will basically never report anything interesting for
79 // platforms using a generic gcc, even if we are just using gcc
80 // to get to the assembler.
81 A->claim();
82
83 A->render(Args, CmdArgs);
84 }
85 }
86
87 RenderExtraToolArgs(JA, CmdArgs);
88
89 // If using a driver, force the arch.
90 if (getToolChain().getTriple().isOSDarwin()) {
91 CmdArgs.push_back("-arch");
92 CmdArgs.push_back(
93 Args.MakeArgString(getToolChain().getDefaultUniversalArchName()));
94 }
95
96 // Try to force gcc to match the tool chain we want, if we recognize
97 // the arch.
98 //
99 // FIXME: The triple class should directly provide the information we want
100 // here.
101 switch (getToolChain().getArch()) {
102 default:
103 break;
104 case llvm::Triple::x86:
105 case llvm::Triple::ppc:
106 case llvm::Triple::ppcle:
107 CmdArgs.push_back("-m32");
108 break;
109 case llvm::Triple::x86_64:
110 case llvm::Triple::ppc64:
111 case llvm::Triple::ppc64le:
112 CmdArgs.push_back("-m64");
113 break;
114 case llvm::Triple::sparcel:
115 CmdArgs.push_back("-EL");
116 break;
117 }
118
119 assert((Output.isFilename() || Output.isNothing()) && "Invalid output.");
120 if (Output.isFilename()) {
121 CmdArgs.push_back("-o");
122 CmdArgs.push_back(Output.getFilename());
123 } else {
124 CmdArgs.push_back("-fsyntax-only");
125 }
126
127 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
128
129 // Only pass -x if gcc will understand it; otherwise hope gcc
130 // understands the suffix correctly. The main use case this would go
131 // wrong in is for linker inputs if they happened to have an odd
132 // suffix; really the only way to get this to happen is a command
133 // like '-x foobar a.c' which will treat a.c like a linker input.
134 //
135 // FIXME: For the linker case specifically, can we safely convert
136 // inputs into '-Wl,' options?
137 for (const auto &II : Inputs) {
138 // Don't try to pass LLVM or AST inputs to a generic gcc.
139 if (types::isLLVMIR(II.getType()))
140 D.Diag(clang::diag::err_drv_no_linker_llvm_support)
142 else if (II.getType() == types::TY_AST)
143 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString();
144 else if (II.getType() == types::TY_ModuleFile)
145 D.Diag(diag::err_drv_no_module_support)
147
148 if (types::canTypeBeUserSpecified(II.getType())) {
149 CmdArgs.push_back("-x");
150 CmdArgs.push_back(types::getTypeName(II.getType()));
151 }
152
153 if (II.isFilename())
154 CmdArgs.push_back(II.getFilename());
155 else {
156 const Arg &A = II.getInputArg();
157
158 // Reverse translate some rewritten options.
159 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) {
160 CmdArgs.push_back("-lstdc++");
161 continue;
162 }
163
164 // Don't render as input, we need gcc to do the translations.
165 A.render(Args, CmdArgs);
166 }
167 }
168
169 const std::string &customGCCName = D.getCCCGenericGCCName();
170 const char *GCCName;
171 if (!customGCCName.empty())
172 GCCName = customGCCName.c_str();
173 else if (D.CCCIsCXX()) {
174 GCCName = "g++";
175 } else
176 GCCName = "gcc";
177
178 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName));
179 C.addCommand(std::make_unique<Command>(JA, *this,
181 Exec, CmdArgs, Inputs, Output));
182}
183
185 const JobAction &JA, ArgStringList &CmdArgs) const {
186 CmdArgs.push_back("-E");
187}
188
190 ArgStringList &CmdArgs) const {
191 const Driver &D = getToolChain().getDriver();
192
193 switch (JA.getType()) {
194 // If -flto, etc. are present then make sure not to force assembly output.
195 case types::TY_LLVM_IR:
196 case types::TY_LTO_IR:
197 case types::TY_LLVM_BC:
198 case types::TY_LTO_BC:
199 CmdArgs.push_back("-c");
200 break;
201 // We assume we've got an "integrated" assembler in that gcc will produce an
202 // object file itself.
203 case types::TY_Object:
204 CmdArgs.push_back("-c");
205 break;
206 case types::TY_PP_Asm:
207 CmdArgs.push_back("-S");
208 break;
209 case types::TY_Nothing:
210 CmdArgs.push_back("-fsyntax-only");
211 break;
212 default:
213 D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType());
214 }
215}
216
218 ArgStringList &CmdArgs) const {
219 // The types are (hopefully) good enough.
220}
221
222static bool getStatic(const ArgList &Args) {
223 return Args.hasArg(options::OPT_static) &&
224 !Args.hasArg(options::OPT_static_pie);
225}
226
228 Compilation &C, const JobAction &JA, const InputInfo &Output,
229 const InputInfoList &Inputs, const ArgList &Args,
230 const char *LinkingOutput) const {
231 const Driver &D = getToolChain().getDriver();
232
233 // Silence warning for "clang -g foo.o -o foo"
234 Args.ClaimAllArgs(options::OPT_g_Group);
235 // and "clang -emit-llvm foo.o -o foo"
236 Args.ClaimAllArgs(options::OPT_emit_llvm);
237 // and for "clang -w foo.o -o foo". Other warning options are already
238 // handled somewhere else.
239 Args.ClaimAllArgs(options::OPT_w);
240 // Silence warnings when linking C code with a C++ '-stdlib' argument.
241 Args.ClaimAllArgs(options::OPT_stdlib_EQ);
242
243 // ar tool command "llvm-ar <options> <output_file> <input_files>".
244 ArgStringList CmdArgs;
245 // Create and insert file members with a deterministic index.
246 CmdArgs.push_back("rcsD");
247 CmdArgs.push_back(Output.getFilename());
248
249 for (const auto &II : Inputs) {
250 if (II.isFilename()) {
251 CmdArgs.push_back(II.getFilename());
252 }
253 }
254
255 // Delete old output archive file if it already exists before generating a new
256 // archive file.
257 auto OutputFileName = Output.getFilename();
258 if (Output.isFilename() && llvm::sys::fs::exists(OutputFileName)) {
259 if (std::error_code EC = llvm::sys::fs::remove(OutputFileName)) {
260 D.Diag(diag::err_drv_unable_to_remove_file) << EC.message();
261 return;
262 }
263 }
264
265 const char *Exec = Args.MakeArgString(getToolChain().GetStaticLibToolPath());
266 C.addCommand(std::make_unique<Command>(JA, *this,
268 Exec, CmdArgs, Inputs, Output));
269}
270
272 const InputInfo &Output,
273 const InputInfoList &Inputs,
274 const ArgList &Args,
275 const char *LinkingOutput) const {
276 // FIXME: The Linker class constructor takes a ToolChain and not a
277 // Generic_ELF, so the static_cast might return a reference to a invalid
278 // instance (see PR45061). Ideally, the Linker constructor needs to take a
279 // Generic_ELF instead.
280 const auto &ToolChain = static_cast<const Generic_ELF &>(getToolChain());
281 const Driver &D = ToolChain.getDriver();
282
283 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
284
285 const llvm::Triple::ArchType Arch = ToolChain.getArch();
286 const bool isOHOSFamily = ToolChain.getTriple().isOHOSFamily();
287 const bool isAndroid = ToolChain.getTriple().isAndroid();
288 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
289 const bool IsVE = ToolChain.getTriple().isVE();
290 const bool IsStaticPIE = getStaticPIE(Args, ToolChain);
291 const bool IsStatic = getStatic(Args);
292 const bool HasCRTBeginEndFiles =
293 ToolChain.getTriple().hasEnvironment() ||
294 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
295
296 ArgStringList CmdArgs;
297
298 // Silence warning for "clang -g foo.o -o foo"
299 Args.ClaimAllArgs(options::OPT_g_Group);
300 // and "clang -emit-llvm foo.o -o foo"
301 Args.ClaimAllArgs(options::OPT_emit_llvm);
302 // and for "clang -w foo.o -o foo". Other warning options are already
303 // handled somewhere else.
304 Args.ClaimAllArgs(options::OPT_w);
305
306 if (!D.SysRoot.empty())
307 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot));
308
309 if (Args.hasArg(options::OPT_s))
310 CmdArgs.push_back("-s");
311
312 if (Triple.isARM() || Triple.isThumb()) {
313 bool IsBigEndian = arm::isARMBigEndian(Triple, Args);
314 if (IsBigEndian)
315 arm::appendBE8LinkFlag(Args, CmdArgs, Triple);
316 CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL");
317 } else if (Triple.isAArch64()) {
318 CmdArgs.push_back(Arch == llvm::Triple::aarch64_be ? "-EB" : "-EL");
319 }
320
321 // Most Android ARM64 targets should enable the linker fix for erratum
322 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
323 if (Arch == llvm::Triple::aarch64 && (isAndroid || isOHOSFamily) &&
324 Args.hasFlag(options::OPT_mfix_cortex_a53_843419,
325 options::OPT_mno_fix_cortex_a53_843419, true)) {
326 std::string CPU = getCPUName(D, Args, Triple);
327 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
328 CmdArgs.push_back("--fix-cortex-a53-843419");
329 }
330
331 ToolChain.addExtraOpts(CmdArgs);
332
333 CmdArgs.push_back("--eh-frame-hdr");
334
335 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) {
336 CmdArgs.push_back("-m");
337 CmdArgs.push_back(LDMOption);
338 } else {
339 D.Diag(diag::err_target_unknown_triple) << Triple.str();
340 return;
341 }
342
343 if (Triple.isLoongArch() || Triple.isRISCV()) {
344 CmdArgs.push_back("-X");
345 if (Args.hasArg(options::OPT_mno_relax))
346 CmdArgs.push_back("--no-relax");
347 }
348
349 const bool IsShared = Args.hasArg(options::OPT_shared);
350 if (IsShared)
351 CmdArgs.push_back("-shared");
352 bool IsPIE = false;
353 if (IsStaticPIE) {
354 CmdArgs.push_back("-static");
355 CmdArgs.push_back("-pie");
356 CmdArgs.push_back("--no-dynamic-linker");
357 CmdArgs.push_back("-z");
358 CmdArgs.push_back("text");
359 } else if (IsStatic) {
360 CmdArgs.push_back("-static");
361 } else if (!Args.hasArg(options::OPT_r)) {
362 if (Args.hasArg(options::OPT_rdynamic))
363 CmdArgs.push_back("-export-dynamic");
364 if (!IsShared) {
365 IsPIE = Args.hasFlag(options::OPT_pie, options::OPT_no_pie,
366 ToolChain.isPIEDefault(Args));
367 if (IsPIE)
368 CmdArgs.push_back("-pie");
369 CmdArgs.push_back("-dynamic-linker");
370 CmdArgs.push_back(Args.MakeArgString(Twine(D.DyldPrefix) +
371 ToolChain.getDynamicLinker(Args)));
372 }
373 }
374
375 CmdArgs.push_back("-o");
376 CmdArgs.push_back(Output.getFilename());
377
378 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles,
379 options::OPT_r)) {
380 if (!isAndroid && !IsIAMCU) {
381 const char *crt1 = nullptr;
382 if (!Args.hasArg(options::OPT_shared)) {
383 if (Args.hasArg(options::OPT_pg))
384 crt1 = "gcrt1.o";
385 else if (IsPIE)
386 crt1 = "Scrt1.o";
387 else if (IsStaticPIE)
388 crt1 = "rcrt1.o";
389 else
390 crt1 = "crt1.o";
391 }
392 if (crt1)
393 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1)));
394
395 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o")));
396 }
397
398 if (IsVE) {
399 CmdArgs.push_back("-z");
400 CmdArgs.push_back("max-page-size=0x4000000");
401 }
402
403 if (IsIAMCU)
404 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o")));
405 else if (HasCRTBeginEndFiles) {
406 std::string P;
408 !isAndroid) {
409 std::string crtbegin = ToolChain.getCompilerRT(Args, "crtbegin",
411 if (ToolChain.getVFS().exists(crtbegin))
412 P = crtbegin;
413 }
414 if (P.empty()) {
415 const char *crtbegin;
416 if (Args.hasArg(options::OPT_shared))
417 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
418 else if (IsStatic)
419 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
420 else if (IsPIE || IsStaticPIE)
421 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
422 else
423 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
424 P = ToolChain.GetFilePath(crtbegin);
425 }
426 CmdArgs.push_back(Args.MakeArgString(P));
427 }
428
429 // Add crtfastmath.o if available and fast math is enabled.
431
432 if (isAndroid && Args.hasFlag(options::OPT_fandroid_pad_segment,
433 options::OPT_fno_android_pad_segment, false))
434 CmdArgs.push_back(
435 Args.MakeArgString(ToolChain.GetFilePath("crt_pad_segment.o")));
436 }
437
438 Args.addAllArgs(CmdArgs, {options::OPT_L, options::OPT_u});
439
440 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
441
442 if (D.isUsingLTO())
443 addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs,
444 D.getLTOMode() == LTOK_Thin);
445
446 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle))
447 CmdArgs.push_back("--no-demangle");
448
449 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs);
450 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs);
452 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA);
453
454 addHIPRuntimeLibArgs(ToolChain, C, Args, CmdArgs);
455
456 // The profile runtime also needs access to system libraries.
457 getToolChain().addProfileRTLibs(Args, CmdArgs);
458
459 if (D.CCCIsCXX() &&
460 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs,
461 options::OPT_r)) {
462 if (ToolChain.ShouldLinkCXXStdlib(Args)) {
463 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) &&
464 !Args.hasArg(options::OPT_static);
465 if (OnlyLibstdcxxStatic)
466 CmdArgs.push_back("-Bstatic");
467 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
468 if (OnlyLibstdcxxStatic)
469 CmdArgs.push_back("-Bdynamic");
470 }
471 CmdArgs.push_back("-lm");
472 }
473
474 // Silence warnings when linking C code with a C++ '-stdlib' argument.
475 Args.ClaimAllArgs(options::OPT_stdlib_EQ);
476
477 // Additional linker set-up and flags for Fortran. This is required in order
478 // to generate executables. As Fortran runtime depends on the C runtime,
479 // these dependencies need to be listed before the C runtime below (i.e.
480 // AddRunTimeLibs).
481 if (D.IsFlangMode() &&
482 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) {
484 ToolChain.addFortranRuntimeLibs(Args, CmdArgs);
485 CmdArgs.push_back("-lm");
486 }
487
488 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_r)) {
489 if (!Args.hasArg(options::OPT_nodefaultlibs)) {
490 if (IsStatic || IsStaticPIE)
491 CmdArgs.push_back("--start-group");
492
493 if (NeedsSanitizerDeps)
494 linkSanitizerRuntimeDeps(ToolChain, Args, CmdArgs);
495
496 if (NeedsXRayDeps)
497 linkXRayRuntimeDeps(ToolChain, Args, CmdArgs);
498
499 bool WantPthread = Args.hasArg(options::OPT_pthread) ||
500 Args.hasArg(options::OPT_pthreads);
501
502 // Use the static OpenMP runtime with -static-openmp
503 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) &&
504 !Args.hasArg(options::OPT_static);
505
506 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
507 // require librt. Most modern Linux platforms do, but some may not.
508 if (addOpenMPRuntime(C, CmdArgs, ToolChain, Args, StaticOpenMP,
510 /* GompNeedsRT= */ true))
511 // OpenMP runtimes implies pthreads when using the GNU toolchain.
512 // FIXME: Does this really make sense for all GNU toolchains?
513 WantPthread = true;
514
515 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
516
517 // LLVM support for atomics on 32-bit SPARC V8+ is incomplete, so
518 // forcibly link with libatomic as a workaround.
519 // TODO: Issue #41880 and D118021.
520 if (getToolChain().getTriple().getArch() == llvm::Triple::sparc) {
521 CmdArgs.push_back("--push-state");
522 CmdArgs.push_back("--as-needed");
523 CmdArgs.push_back("-latomic");
524 CmdArgs.push_back("--pop-state");
525 }
526
527 // We don't need libpthread neither for bionic (Android) nor for musl,
528 // (used by OHOS as runtime library).
529 if (WantPthread && !isAndroid && !isOHOSFamily)
530 CmdArgs.push_back("-lpthread");
531
532 if (Args.hasArg(options::OPT_fsplit_stack))
533 CmdArgs.push_back("--wrap=pthread_create");
534
535 if (!Args.hasArg(options::OPT_nolibc))
536 CmdArgs.push_back("-lc");
537
538 // Add IAMCU specific libs, if needed.
539 if (IsIAMCU)
540 CmdArgs.push_back("-lgloss");
541
542 if (IsStatic || IsStaticPIE)
543 CmdArgs.push_back("--end-group");
544 else
545 AddRunTimeLibs(ToolChain, D, CmdArgs, Args);
546
547 // Add IAMCU specific libs (outside the group), if needed.
548 if (IsIAMCU) {
549 CmdArgs.push_back("--as-needed");
550 CmdArgs.push_back("-lsoftfp");
551 CmdArgs.push_back("--no-as-needed");
552 }
553 }
554
555 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) {
556 if (HasCRTBeginEndFiles) {
557 std::string P;
559 !isAndroid) {
560 std::string crtend = ToolChain.getCompilerRT(Args, "crtend",
562 if (ToolChain.getVFS().exists(crtend))
563 P = crtend;
564 }
565 if (P.empty()) {
566 const char *crtend;
567 if (Args.hasArg(options::OPT_shared))
568 crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
569 else if (IsPIE || IsStaticPIE)
570 crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
571 else
572 crtend = isAndroid ? "crtend_android.o" : "crtend.o";
573 P = ToolChain.GetFilePath(crtend);
574 }
575 CmdArgs.push_back(Args.MakeArgString(P));
576 }
577 if (!isAndroid)
578 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o")));
579 }
580 }
581
582 Args.addAllArgs(CmdArgs, {options::OPT_T, options::OPT_t});
583
584 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath());
585 C.addCommand(std::make_unique<Command>(JA, *this,
587 Exec, CmdArgs, Inputs, Output));
588}
589
591 const JobAction &JA,
592 const InputInfo &Output,
593 const InputInfoList &Inputs,
594 const ArgList &Args,
595 const char *LinkingOutput) const {
596 const auto &D = getToolChain().getDriver();
597
598 claimNoWarnArgs(Args);
599
600 ArgStringList CmdArgs;
601
602 llvm::Reloc::Model RelocationModel;
603 unsigned PICLevel;
604 bool IsPIE;
605 const char *DefaultAssembler = "as";
606 // Enforce GNU as on Solaris; the native assembler's input syntax isn't fully
607 // compatible.
608 if (getToolChain().getTriple().isOSSolaris())
609 DefaultAssembler = "gas";
610 std::tie(RelocationModel, PICLevel, IsPIE) =
611 ParsePICArgs(getToolChain(), Args);
612
613 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) {
614 if (A->getOption().getID() == options::OPT_gz) {
615 CmdArgs.push_back("--compress-debug-sections");
616 } else {
617 StringRef Value = A->getValue();
618 if (Value == "none" || Value == "zlib" || Value == "zstd") {
619 CmdArgs.push_back(
620 Args.MakeArgString("--compress-debug-sections=" + Twine(Value)));
621 } else {
622 D.Diag(diag::err_drv_unsupported_option_argument)
623 << A->getSpelling() << Value;
624 }
625 }
626 }
627
628 switch (getToolChain().getArch()) {
629 default:
630 break;
631 // Add --32/--64 to make sure we get the format we want.
632 // This is incomplete
633 case llvm::Triple::x86:
634 CmdArgs.push_back("--32");
635 break;
636 case llvm::Triple::x86_64:
637 if (getToolChain().getTriple().isX32())
638 CmdArgs.push_back("--x32");
639 else
640 CmdArgs.push_back("--64");
641 break;
642 case llvm::Triple::ppc: {
643 CmdArgs.push_back("-a32");
644 CmdArgs.push_back("-mppc");
645 CmdArgs.push_back("-mbig-endian");
646 CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
647 getCPUName(D, Args, getToolChain().getTriple())));
648 break;
649 }
650 case llvm::Triple::ppcle: {
651 CmdArgs.push_back("-a32");
652 CmdArgs.push_back("-mppc");
653 CmdArgs.push_back("-mlittle-endian");
654 CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
655 getCPUName(D, Args, getToolChain().getTriple())));
656 break;
657 }
658 case llvm::Triple::ppc64: {
659 CmdArgs.push_back("-a64");
660 CmdArgs.push_back("-mppc64");
661 CmdArgs.push_back("-mbig-endian");
662 CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
663 getCPUName(D, Args, getToolChain().getTriple())));
664 break;
665 }
666 case llvm::Triple::ppc64le: {
667 CmdArgs.push_back("-a64");
668 CmdArgs.push_back("-mppc64");
669 CmdArgs.push_back("-mlittle-endian");
670 CmdArgs.push_back(ppc::getPPCAsmModeForCPU(
671 getCPUName(D, Args, getToolChain().getTriple())));
672 break;
673 }
674 case llvm::Triple::riscv32:
675 case llvm::Triple::riscv64: {
676 StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple());
677 CmdArgs.push_back("-mabi");
678 CmdArgs.push_back(ABIName.data());
679 std::string MArchName =
680 riscv::getRISCVArch(Args, getToolChain().getTriple());
681 CmdArgs.push_back("-march");
682 CmdArgs.push_back(Args.MakeArgString(MArchName));
683 if (!Args.hasFlag(options::OPT_mrelax, options::OPT_mno_relax, true))
684 Args.addOptOutFlag(CmdArgs, options::OPT_mrelax, options::OPT_mno_relax);
685 break;
686 }
687 case llvm::Triple::sparc:
688 case llvm::Triple::sparcel: {
689 CmdArgs.push_back("-32");
690 std::string CPU = getCPUName(D, Args, getToolChain().getTriple());
691 CmdArgs.push_back(
692 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
693 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
694 break;
695 }
696 case llvm::Triple::sparcv9: {
697 CmdArgs.push_back("-64");
698 std::string CPU = getCPUName(D, Args, getToolChain().getTriple());
699 CmdArgs.push_back(
700 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple()));
701 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
702 break;
703 }
704 case llvm::Triple::arm:
705 case llvm::Triple::armeb:
706 case llvm::Triple::thumb:
707 case llvm::Triple::thumbeb: {
708 const llvm::Triple &Triple2 = getToolChain().getTriple();
709 CmdArgs.push_back(arm::isARMBigEndian(Triple2, Args) ? "-EB" : "-EL");
710 switch (Triple2.getSubArch()) {
711 case llvm::Triple::ARMSubArch_v7:
712 CmdArgs.push_back("-mfpu=neon");
713 break;
714 case llvm::Triple::ARMSubArch_v8:
715 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8");
716 break;
717 default:
718 break;
719 }
720
721 switch (arm::getARMFloatABI(getToolChain(), Args)) {
722 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
724 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft"));
725 break;
727 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp"));
728 break;
730 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard"));
731 break;
732 }
733
734 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
735 normalizeCPUNamesForAssembler(Args, CmdArgs);
736
737 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ);
738 // The integrated assembler doesn't implement e_flags setting behavior for
739 // -meabi=gnu (gcc -mabi={apcs-gnu,atpcs} passes -meabi=gnu to gas). For
740 // compatibility we accept but warn.
741 if (Arg *A = Args.getLastArgNoClaim(options::OPT_mabi_EQ))
742 A->ignoreTargetSpecific();
743 break;
744 }
745 case llvm::Triple::aarch64:
746 case llvm::Triple::aarch64_be: {
747 CmdArgs.push_back(
748 getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL");
749 Args.AddLastArg(CmdArgs, options::OPT_march_EQ);
750 normalizeCPUNamesForAssembler(Args, CmdArgs);
751
752 break;
753 }
754 // TODO: handle loongarch32.
755 case llvm::Triple::loongarch64: {
756 StringRef ABIName =
757 loongarch::getLoongArchABI(D, Args, getToolChain().getTriple());
758 CmdArgs.push_back(Args.MakeArgString("-mabi=" + ABIName));
759 break;
760 }
761 case llvm::Triple::mips:
762 case llvm::Triple::mipsel:
763 case llvm::Triple::mips64:
764 case llvm::Triple::mips64el: {
765 StringRef CPUName;
766 StringRef ABIName;
767 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName);
768 ABIName = mips::getGnuCompatibleMipsABIName(ABIName);
769
770 CmdArgs.push_back("-march");
771 CmdArgs.push_back(CPUName.data());
772
773 CmdArgs.push_back("-mabi");
774 CmdArgs.push_back(ABIName.data());
775
776 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
777 // or -mshared (not implemented) is in effect.
778 if (RelocationModel == llvm::Reloc::Static)
779 CmdArgs.push_back("-mno-shared");
780
781 // LLVM doesn't support -mplt yet and acts as if it is always given.
782 // However, -mplt has no effect with the N64 ABI.
783 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls))
784 CmdArgs.push_back("-call_nonpic");
785
786 if (getToolChain().getTriple().isLittleEndian())
787 CmdArgs.push_back("-EL");
788 else
789 CmdArgs.push_back("-EB");
790
791 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) {
792 if (StringRef(A->getValue()) == "2008")
793 CmdArgs.push_back(Args.MakeArgString("-mnan=2008"));
794 }
795
796 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
797 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx,
798 options::OPT_mfp64)) {
799 A->claim();
800 A->render(Args, CmdArgs);
801 } else if (mips::shouldUseFPXX(
802 Args, getToolChain().getTriple(), CPUName, ABIName,
803 mips::getMipsFloatABI(getToolChain().getDriver(), Args,
804 getToolChain().getTriple())))
805 CmdArgs.push_back("-mfpxx");
806
807 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
808 // -mno-mips16 is actually -no-mips16.
809 if (Arg *A =
810 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) {
811 if (A->getOption().matches(options::OPT_mips16)) {
812 A->claim();
813 A->render(Args, CmdArgs);
814 } else {
815 A->claim();
816 CmdArgs.push_back("-no-mips16");
817 }
818 }
819
820 Args.AddLastArg(CmdArgs, options::OPT_mmicromips,
821 options::OPT_mno_micromips);
822 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp);
823 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2);
824
825 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) {
826 // Do not use AddLastArg because not all versions of MIPS assembler
827 // support -mmsa / -mno-msa options.
828 if (A->getOption().matches(options::OPT_mmsa))
829 CmdArgs.push_back(Args.MakeArgString("-mmsa"));
830 }
831
832 Args.AddLastArg(CmdArgs, options::OPT_mhard_float,
833 options::OPT_msoft_float);
834
835 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float,
836 options::OPT_msingle_float);
837
838 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg,
839 options::OPT_mno_odd_spreg);
840
841 AddAssemblerKPIC(getToolChain(), Args, CmdArgs);
842 break;
843 }
844 case llvm::Triple::systemz: {
845 // Always pass an -march option, since our default of z10 is later
846 // than the GNU assembler's default.
847 std::string CPUName =
848 systemz::getSystemZTargetCPU(Args, getToolChain().getTriple());
849 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName));
850 break;
851 }
852 case llvm::Triple::ve:
853 DefaultAssembler = "nas";
854 }
855
856 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ,
857 options::OPT_fdebug_prefix_map_EQ)) {
858 StringRef Map = A->getValue();
859 if (!Map.contains('='))
860 D.Diag(diag::err_drv_invalid_argument_to_option)
861 << Map << A->getOption().getName();
862 else {
863 CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map"));
864 CmdArgs.push_back(Args.MakeArgString(Map));
865 }
866 A->claim();
867 }
868
869 Args.AddAllArgs(CmdArgs, options::OPT_I);
870 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler);
871
872 CmdArgs.push_back("-o");
873 CmdArgs.push_back(Output.getFilename());
874
875 for (const auto &II : Inputs)
876 CmdArgs.push_back(II.getFilename());
877
878 if (Arg *A = Args.getLastArg(options::OPT_g_Flag, options::OPT_gN_Group,
879 options::OPT_gdwarf_2, options::OPT_gdwarf_3,
880 options::OPT_gdwarf_4, options::OPT_gdwarf_5,
881 options::OPT_gdwarf))
882 if (!A->getOption().matches(options::OPT_g0)) {
883 Args.AddLastArg(CmdArgs, options::OPT_g_Flag);
884
885 unsigned DwarfVersion = getDwarfVersion(getToolChain(), Args);
886 CmdArgs.push_back(Args.MakeArgString("-gdwarf-" + Twine(DwarfVersion)));
887 }
888
889 const char *Exec =
890 Args.MakeArgString(getToolChain().GetProgramPath(DefaultAssembler));
891 C.addCommand(std::make_unique<Command>(JA, *this,
893 Exec, CmdArgs, Inputs, Output));
894
895 // Handle the debug info splitting at object creation time if we're
896 // creating an object.
897 // TODO: Currently only works on linux with newer objcopy.
898 if (Args.hasArg(options::OPT_gsplit_dwarf) &&
899 getToolChain().getTriple().isOSLinux())
900 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output,
901 SplitDebugName(JA, Args, Inputs[0], Output));
902}
903
904namespace {
905// Filter to remove Multilibs that don't exist as a suffix to Path
906class FilterNonExistent {
907 StringRef Base, File;
908 llvm::vfs::FileSystem &VFS;
909
910public:
911 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS)
912 : Base(Base), File(File), VFS(VFS) {}
913 bool operator()(const Multilib &M) {
914 return !VFS.exists(Base + M.gccSuffix() + File);
915 }
916};
917} // end anonymous namespace
918
919static bool isSoftFloatABI(const ArgList &Args) {
920 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float,
921 options::OPT_mfloat_abi_EQ);
922 if (!A)
923 return false;
924
925 return A->getOption().matches(options::OPT_msoft_float) ||
926 (A->getOption().matches(options::OPT_mfloat_abi_EQ) &&
927 A->getValue() == StringRef("soft"));
928}
929
930static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
931 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
932}
933
934static bool isMipsEL(llvm::Triple::ArchType Arch) {
935 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
936}
937
938static bool isMips16(const ArgList &Args) {
939 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16);
940 return A && A->getOption().matches(options::OPT_mips16);
941}
942
943static bool isMicroMips(const ArgList &Args) {
944 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips);
945 return A && A->getOption().matches(options::OPT_mmicromips);
946}
947
948static bool isMSP430(llvm::Triple::ArchType Arch) {
949 return Arch == llvm::Triple::msp430;
950}
951
952static bool findMipsCsMultilibs(const Driver &D,
953 const Multilib::flags_list &Flags,
954 FilterNonExistent &NonExistent,
956 // Check for Code Sourcery toolchain multilibs
957 MultilibSet CSMipsMultilibs;
958 {
959 auto MArchMips16 = MultilibBuilder("/mips16").flag("-m32").flag("-mips16");
960
961 auto MArchMicroMips =
962 MultilibBuilder("/micromips").flag("-m32").flag("-mmicromips");
963
964 auto MArchDefault = MultilibBuilder("")
965 .flag("-mips16", /*Disallow=*/true)
966 .flag("-mmicromips", /*Disallow=*/true);
967
968 auto UCLibc = MultilibBuilder("/uclibc").flag("-muclibc");
969
970 auto SoftFloat = MultilibBuilder("/soft-float").flag("-msoft-float");
971
972 auto Nan2008 = MultilibBuilder("/nan2008").flag("-mnan=2008");
973
974 auto DefaultFloat = MultilibBuilder("")
975 .flag("-msoft-float", /*Disallow=*/true)
976 .flag("-mnan=2008", /*Disallow=*/true);
977
978 auto BigEndian =
979 MultilibBuilder("").flag("-EB").flag("-EL", /*Disallow=*/true);
980
981 auto LittleEndian =
982 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true);
983
984 // Note that this one's osSuffix is ""
985 auto MAbi64 = MultilibBuilder("")
986 .gccSuffix("/64")
987 .includeSuffix("/64")
988 .flag("-mabi=n64")
989 .flag("-mabi=n32", /*Disallow=*/true)
990 .flag("-m32", /*Disallow=*/true);
991
992 CSMipsMultilibs =
994 .Either(MArchMips16, MArchMicroMips, MArchDefault)
995 .Maybe(UCLibc)
996 .Either(SoftFloat, Nan2008, DefaultFloat)
997 .FilterOut("/micromips/nan2008")
998 .FilterOut("/mips16/nan2008")
999 .Either(BigEndian, LittleEndian)
1000 .Maybe(MAbi64)
1001 .FilterOut("/mips16.*/64")
1002 .FilterOut("/micromips.*/64")
1004 .FilterOut(NonExistent)
1005 .setIncludeDirsCallback([](const Multilib &M) {
1006 std::vector<std::string> Dirs({"/include"});
1007 if (StringRef(M.includeSuffix()).starts_with("/uclibc"))
1008 Dirs.push_back(
1009 "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
1010 else
1011 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include");
1012 return Dirs;
1013 });
1014 }
1015
1016 MultilibSet DebianMipsMultilibs;
1017 {
1018 MultilibBuilder MAbiN32 =
1019 MultilibBuilder().gccSuffix("/n32").includeSuffix("/n32").flag(
1020 "-mabi=n32");
1021
1023 .gccSuffix("/64")
1024 .includeSuffix("/64")
1025 .flag("-m64")
1026 .flag("-m32", /*Disallow=*/true)
1027 .flag("-mabi=n32", /*Disallow=*/true);
1028
1030 .gccSuffix("/32")
1031 .flag("-m64", /*Disallow=*/true)
1032 .flag("-m32")
1033 .flag("-mabi=n32", /*Disallow=*/true);
1034
1035 DebianMipsMultilibs = MultilibSetBuilder()
1036 .Either(M32, M64, MAbiN32)
1038 .FilterOut(NonExistent);
1039 }
1040
1041 // Sort candidates. Toolchain that best meets the directories tree goes first.
1042 // Then select the first toolchains matches command line flags.
1043 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
1044 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
1045 std::iter_swap(Candidates, Candidates + 1);
1046 for (const MultilibSet *Candidate : Candidates) {
1047 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1048 if (Candidate == &DebianMipsMultilibs)
1049 Result.BiarchSibling = Multilib();
1050 Result.Multilibs = *Candidate;
1051 return true;
1052 }
1053 }
1054 return false;
1055}
1056
1057static bool findMipsMuslMultilibs(const Driver &D,
1058 const Multilib::flags_list &Flags,
1059 FilterNonExistent &NonExistent,
1061 // Musl toolchain multilibs
1062 MultilibSet MuslMipsMultilibs;
1063 {
1064 auto MArchMipsR2 = MultilibBuilder("")
1065 .osSuffix("/mips-r2-hard-musl")
1066 .flag("-EB")
1067 .flag("-EL", /*Disallow=*/true)
1068 .flag("-march=mips32r2");
1069
1070 auto MArchMipselR2 = MultilibBuilder("/mipsel-r2-hard-musl")
1071 .flag("-EB", /*Disallow=*/true)
1072 .flag("-EL")
1073 .flag("-march=mips32r2");
1074
1075 MuslMipsMultilibs = MultilibSetBuilder()
1076 .Either(MArchMipsR2, MArchMipselR2)
1077 .makeMultilibSet();
1078
1079 // Specify the callback that computes the include directories.
1080 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1081 return std::vector<std::string>(
1082 {"/../sysroot" + M.osSuffix() + "/usr/include"});
1083 });
1084 }
1085 if (MuslMipsMultilibs.select(D, Flags, Result.SelectedMultilibs)) {
1086 Result.Multilibs = MuslMipsMultilibs;
1087 return true;
1088 }
1089 return false;
1090}
1091
1092static bool findMipsMtiMultilibs(const Driver &D,
1093 const Multilib::flags_list &Flags,
1094 FilterNonExistent &NonExistent,
1096 // CodeScape MTI toolchain v1.2 and early.
1097 MultilibSet MtiMipsMultilibsV1;
1098 {
1099 auto MArchMips32 = MultilibBuilder("/mips32")
1100 .flag("-m32")
1101 .flag("-m64", /*Disallow=*/true)
1102 .flag("-mmicromips", /*Disallow=*/true)
1103 .flag("-march=mips32");
1104
1105 auto MArchMicroMips = MultilibBuilder("/micromips")
1106 .flag("-m32")
1107 .flag("-m64", /*Disallow=*/true)
1108 .flag("-mmicromips");
1109
1110 auto MArchMips64r2 = MultilibBuilder("/mips64r2")
1111 .flag("-m32", /*Disallow=*/true)
1112 .flag("-m64")
1113 .flag("-march=mips64r2");
1114
1115 auto MArchMips64 = MultilibBuilder("/mips64")
1116 .flag("-m32", /*Disallow=*/true)
1117 .flag("-m64")
1118 .flag("-march=mips64r2", /*Disallow=*/true);
1119
1120 auto MArchDefault = MultilibBuilder("")
1121 .flag("-m32")
1122 .flag("-m64", /*Disallow=*/true)
1123 .flag("-mmicromips", /*Disallow=*/true)
1124 .flag("-march=mips32r2");
1125
1126 auto Mips16 = MultilibBuilder("/mips16").flag("-mips16");
1127
1128 auto UCLibc = MultilibBuilder("/uclibc").flag("-muclibc");
1129
1130 auto MAbi64 = MultilibBuilder("/64")
1131 .flag("-mabi=n64")
1132 .flag("-mabi=n32", /*Disallow=*/true)
1133 .flag("-m32", /*Disallow=*/true);
1134
1135 auto BigEndian =
1136 MultilibBuilder("").flag("-EB").flag("-EL", /*Disallow=*/true);
1137
1138 auto LittleEndian =
1139 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true);
1140
1141 auto SoftFloat = MultilibBuilder("/sof").flag("-msoft-float");
1142
1143 auto Nan2008 = MultilibBuilder("/nan2008").flag("-mnan=2008");
1144
1145 MtiMipsMultilibsV1 =
1147 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64,
1148 MArchDefault)
1149 .Maybe(UCLibc)
1150 .Maybe(Mips16)
1151 .FilterOut("/mips64/mips16")
1152 .FilterOut("/mips64r2/mips16")
1153 .FilterOut("/micromips/mips16")
1154 .Maybe(MAbi64)
1155 .FilterOut("/micromips/64")
1156 .FilterOut("/mips32/64")
1157 .FilterOut("^/64")
1158 .FilterOut("/mips16/64")
1159 .Either(BigEndian, LittleEndian)
1160 .Maybe(SoftFloat)
1161 .Maybe(Nan2008)
1162 .FilterOut(".*sof/nan2008")
1164 .FilterOut(NonExistent)
1165 .setIncludeDirsCallback([](const Multilib &M) {
1166 std::vector<std::string> Dirs({"/include"});
1167 if (StringRef(M.includeSuffix()).starts_with("/uclibc"))
1168 Dirs.push_back("/../../../../sysroot/uclibc/usr/include");
1169 else
1170 Dirs.push_back("/../../../../sysroot/usr/include");
1171 return Dirs;
1172 });
1173 }
1174
1175 // CodeScape IMG toolchain starting from v1.3.
1176 MultilibSet MtiMipsMultilibsV2;
1177 {
1178 auto BeHard = MultilibBuilder("/mips-r2-hard")
1179 .flag("-EB")
1180 .flag("-msoft-float", /*Disallow=*/true)
1181 .flag("-mnan=2008", /*Disallow=*/true)
1182 .flag("-muclibc", /*Disallow=*/true);
1183 auto BeSoft = MultilibBuilder("/mips-r2-soft")
1184 .flag("-EB")
1185 .flag("-msoft-float")
1186 .flag("-mnan=2008", /*Disallow=*/true);
1187 auto ElHard = MultilibBuilder("/mipsel-r2-hard")
1188 .flag("-EL")
1189 .flag("-msoft-float", /*Disallow=*/true)
1190 .flag("-mnan=2008", /*Disallow=*/true)
1191 .flag("-muclibc", /*Disallow=*/true);
1192 auto ElSoft = MultilibBuilder("/mipsel-r2-soft")
1193 .flag("-EL")
1194 .flag("-msoft-float")
1195 .flag("-mnan=2008", /*Disallow=*/true)
1196 .flag("-mmicromips", /*Disallow=*/true);
1197 auto BeHardNan = MultilibBuilder("/mips-r2-hard-nan2008")
1198 .flag("-EB")
1199 .flag("-msoft-float", /*Disallow=*/true)
1200 .flag("-mnan=2008")
1201 .flag("-muclibc", /*Disallow=*/true);
1202 auto ElHardNan = MultilibBuilder("/mipsel-r2-hard-nan2008")
1203 .flag("-EL")
1204 .flag("-msoft-float", /*Disallow=*/true)
1205 .flag("-mnan=2008")
1206 .flag("-muclibc", /*Disallow=*/true)
1207 .flag("-mmicromips", /*Disallow=*/true);
1208 auto BeHardNanUclibc = MultilibBuilder("/mips-r2-hard-nan2008-uclibc")
1209 .flag("-EB")
1210 .flag("-msoft-float", /*Disallow=*/true)
1211 .flag("-mnan=2008")
1212 .flag("-muclibc");
1213 auto ElHardNanUclibc = MultilibBuilder("/mipsel-r2-hard-nan2008-uclibc")
1214 .flag("-EL")
1215 .flag("-msoft-float", /*Disallow=*/true)
1216 .flag("-mnan=2008")
1217 .flag("-muclibc");
1218 auto BeHardUclibc = MultilibBuilder("/mips-r2-hard-uclibc")
1219 .flag("-EB")
1220 .flag("-msoft-float", /*Disallow=*/true)
1221 .flag("-mnan=2008", /*Disallow=*/true)
1222 .flag("-muclibc");
1223 auto ElHardUclibc = MultilibBuilder("/mipsel-r2-hard-uclibc")
1224 .flag("-EL")
1225 .flag("-msoft-float", /*Disallow=*/true)
1226 .flag("-mnan=2008", /*Disallow=*/true)
1227 .flag("-muclibc");
1228 auto ElMicroHardNan = MultilibBuilder("/micromipsel-r2-hard-nan2008")
1229 .flag("-EL")
1230 .flag("-msoft-float", /*Disallow=*/true)
1231 .flag("-mnan=2008")
1232 .flag("-mmicromips");
1233 auto ElMicroSoft = MultilibBuilder("/micromipsel-r2-soft")
1234 .flag("-EL")
1235 .flag("-msoft-float")
1236 .flag("-mnan=2008", /*Disallow=*/true)
1237 .flag("-mmicromips");
1238
1239 auto O32 = MultilibBuilder("/lib")
1240 .osSuffix("")
1241 .flag("-mabi=n32", /*Disallow=*/true)
1242 .flag("-mabi=n64", /*Disallow=*/true);
1243 auto N32 = MultilibBuilder("/lib32")
1244 .osSuffix("")
1245 .flag("-mabi=n32")
1246 .flag("-mabi=n64", /*Disallow=*/true);
1247 auto N64 = MultilibBuilder("/lib64")
1248 .osSuffix("")
1249 .flag("-mabi=n32", /*Disallow=*/true)
1250 .flag("-mabi=n64");
1251
1252 MtiMipsMultilibsV2 =
1254 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1255 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1256 ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1257 .Either(O32, N32, N64)
1259 .FilterOut(NonExistent)
1260 .setIncludeDirsCallback([](const Multilib &M) {
1261 return std::vector<std::string>({"/../../../../sysroot" +
1262 M.includeSuffix() +
1263 "/../usr/include"});
1264 })
1265 .setFilePathsCallback([](const Multilib &M) {
1266 return std::vector<std::string>(
1267 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1268 });
1269 }
1270 for (auto *Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1271 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1272 Result.Multilibs = *Candidate;
1273 return true;
1274 }
1275 }
1276 return false;
1277}
1278
1279static bool findMipsImgMultilibs(const Driver &D,
1280 const Multilib::flags_list &Flags,
1281 FilterNonExistent &NonExistent,
1283 // CodeScape IMG toolchain v1.2 and early.
1284 MultilibSet ImgMultilibsV1;
1285 {
1286 auto Mips64r6 = MultilibBuilder("/mips64r6")
1287 .flag("-m64")
1288 .flag("-m32", /*Disallow=*/true);
1289
1290 auto LittleEndian =
1291 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true);
1292
1293 auto MAbi64 = MultilibBuilder("/64")
1294 .flag("-mabi=n64")
1295 .flag("-mabi=n32", /*Disallow=*/true)
1296 .flag("-m32", /*Disallow=*/true);
1297
1298 ImgMultilibsV1 =
1300 .Maybe(Mips64r6)
1301 .Maybe(MAbi64)
1302 .Maybe(LittleEndian)
1304 .FilterOut(NonExistent)
1305 .setIncludeDirsCallback([](const Multilib &M) {
1306 return std::vector<std::string>(
1307 {"/include", "/../../../../sysroot/usr/include"});
1308 });
1309 }
1310
1311 // CodeScape IMG toolchain starting from v1.3.
1312 MultilibSet ImgMultilibsV2;
1313 {
1314 auto BeHard = MultilibBuilder("/mips-r6-hard")
1315 .flag("-EB")
1316 .flag("-msoft-float", /*Disallow=*/true)
1317 .flag("-mmicromips", /*Disallow=*/true);
1318 auto BeSoft = MultilibBuilder("/mips-r6-soft")
1319 .flag("-EB")
1320 .flag("-msoft-float")
1321 .flag("-mmicromips", /*Disallow=*/true);
1322 auto ElHard = MultilibBuilder("/mipsel-r6-hard")
1323 .flag("-EL")
1324 .flag("-msoft-float", /*Disallow=*/true)
1325 .flag("-mmicromips", /*Disallow=*/true);
1326 auto ElSoft = MultilibBuilder("/mipsel-r6-soft")
1327 .flag("-EL")
1328 .flag("-msoft-float")
1329 .flag("-mmicromips", /*Disallow=*/true);
1330 auto BeMicroHard = MultilibBuilder("/micromips-r6-hard")
1331 .flag("-EB")
1332 .flag("-msoft-float", /*Disallow=*/true)
1333 .flag("-mmicromips");
1334 auto BeMicroSoft = MultilibBuilder("/micromips-r6-soft")
1335 .flag("-EB")
1336 .flag("-msoft-float")
1337 .flag("-mmicromips");
1338 auto ElMicroHard = MultilibBuilder("/micromipsel-r6-hard")
1339 .flag("-EL")
1340 .flag("-msoft-float", /*Disallow=*/true)
1341 .flag("-mmicromips");
1342 auto ElMicroSoft = MultilibBuilder("/micromipsel-r6-soft")
1343 .flag("-EL")
1344 .flag("-msoft-float")
1345 .flag("-mmicromips");
1346
1347 auto O32 = MultilibBuilder("/lib")
1348 .osSuffix("")
1349 .flag("-mabi=n32", /*Disallow=*/true)
1350 .flag("-mabi=n64", /*Disallow=*/true);
1351 auto N32 = MultilibBuilder("/lib32")
1352 .osSuffix("")
1353 .flag("-mabi=n32")
1354 .flag("-mabi=n64", /*Disallow=*/true);
1355 auto N64 = MultilibBuilder("/lib64")
1356 .osSuffix("")
1357 .flag("-mabi=n32", /*Disallow=*/true)
1358 .flag("-mabi=n64");
1359
1360 ImgMultilibsV2 =
1362 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1363 ElMicroHard, ElMicroSoft})
1364 .Either(O32, N32, N64)
1366 .FilterOut(NonExistent)
1367 .setIncludeDirsCallback([](const Multilib &M) {
1368 return std::vector<std::string>({"/../../../../sysroot" +
1369 M.includeSuffix() +
1370 "/../usr/include"});
1371 })
1372 .setFilePathsCallback([](const Multilib &M) {
1373 return std::vector<std::string>(
1374 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1375 });
1376 }
1377 for (auto *Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1378 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1379 Result.Multilibs = *Candidate;
1380 return true;
1381 }
1382 }
1383 return false;
1384}
1385
1387 const llvm::Triple &TargetTriple,
1388 StringRef Path, const ArgList &Args,
1390 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1391
1392 StringRef CPUName;
1393 StringRef ABIName;
1394 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName);
1395
1396 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1397
1399 addMultilibFlag(TargetTriple.isMIPS32(), "-m32", Flags);
1400 addMultilibFlag(TargetTriple.isMIPS64(), "-m64", Flags);
1401 addMultilibFlag(isMips16(Args), "-mips16", Flags);
1402 addMultilibFlag(CPUName == "mips32", "-march=mips32", Flags);
1403 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" ||
1404 CPUName == "mips32r5" || CPUName == "p5600",
1405 "-march=mips32r2", Flags);
1406 addMultilibFlag(CPUName == "mips32r6", "-march=mips32r6", Flags);
1407 addMultilibFlag(CPUName == "mips64", "-march=mips64", Flags);
1408 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" ||
1409 CPUName == "mips64r5" || CPUName == "octeon" ||
1410 CPUName == "octeon+",
1411 "-march=mips64r2", Flags);
1412 addMultilibFlag(CPUName == "mips64r6" || CPUName == "i6400" ||
1413 CPUName == "i6500",
1414 "-march=mips64r6", Flags);
1415 addMultilibFlag(isMicroMips(Args), "-mmicromips", Flags);
1416 addMultilibFlag(tools::mips::isUCLibc(Args), "-muclibc", Flags);
1417 addMultilibFlag(tools::mips::isNaN2008(D, Args, TargetTriple), "-mnan=2008",
1418 Flags);
1419 addMultilibFlag(ABIName == "n32", "-mabi=n32", Flags);
1420 addMultilibFlag(ABIName == "n64", "-mabi=n64", Flags);
1421 addMultilibFlag(isSoftFloatABI(Args), "-msoft-float", Flags);
1422 addMultilibFlag(!isSoftFloatABI(Args), "-mhard-float", Flags);
1423 addMultilibFlag(isMipsEL(TargetArch), "-EL", Flags);
1424 addMultilibFlag(!isMipsEL(TargetArch), "-EB", Flags);
1425
1426 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1427 TargetTriple.getOS() == llvm::Triple::Linux &&
1428 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1429 return findMipsMuslMultilibs(D, Flags, NonExistent, Result);
1430
1431 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1432 TargetTriple.getOS() == llvm::Triple::Linux &&
1433 TargetTriple.isGNUEnvironment())
1434 return findMipsMtiMultilibs(D, Flags, NonExistent, Result);
1435
1436 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1437 TargetTriple.getOS() == llvm::Triple::Linux &&
1438 TargetTriple.isGNUEnvironment())
1439 return findMipsImgMultilibs(D, Flags, NonExistent, Result);
1440
1441 if (findMipsCsMultilibs(D, Flags, NonExistent, Result))
1442 return true;
1443
1444 // Fallback to the regular toolchain-tree structure.
1446 Result.Multilibs.push_back(Default);
1447 Result.Multilibs.FilterOut(NonExistent);
1448
1449 if (Result.Multilibs.select(D, Flags, Result.SelectedMultilibs)) {
1450 Result.BiarchSibling = Multilib();
1451 return true;
1452 }
1453
1454 return false;
1455}
1456
1458 const llvm::Triple &TargetTriple,
1459 StringRef Path, const ArgList &Args,
1461 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1462 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1463 MultilibBuilder ArmV7Multilib = MultilibBuilder("/armv7-a")
1464 .flag("-march=armv7-a")
1465 .flag("-mthumb", /*Disallow=*/true);
1466 MultilibBuilder ThumbMultilib = MultilibBuilder("/thumb")
1467 .flag("-march=armv7-a", /*Disallow=*/true)
1468 .flag("-mthumb");
1469 MultilibBuilder ArmV7ThumbMultilib =
1470 MultilibBuilder("/armv7-a/thumb").flag("-march=armv7-a").flag("-mthumb");
1471 MultilibBuilder DefaultMultilib =
1472 MultilibBuilder("")
1473 .flag("-march=armv7-a", /*Disallow=*/true)
1474 .flag("-mthumb", /*Disallow=*/true);
1475 MultilibSet AndroidArmMultilibs =
1477 .Either(ThumbMultilib, ArmV7Multilib, ArmV7ThumbMultilib,
1478 DefaultMultilib)
1480 .FilterOut(NonExistent);
1481
1483 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ);
1484 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1485 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1486 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1487 bool IsThumbMode = IsThumbArch ||
1488 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) ||
1489 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB);
1490 bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1491 (llvm::ARM::parseArchVersion(Arch) == 7 ||
1492 (IsArmArch && Arch == "" && IsV7SubArch));
1493 addMultilibFlag(IsArmV7Mode, "-march=armv7-a", Flags);
1494 addMultilibFlag(IsThumbMode, "-mthumb", Flags);
1495
1496 if (AndroidArmMultilibs.select(D, Flags, Result.SelectedMultilibs))
1497 Result.Multilibs = AndroidArmMultilibs;
1498}
1499
1500static bool findMSP430Multilibs(const Driver &D,
1501 const llvm::Triple &TargetTriple,
1502 StringRef Path, const ArgList &Args,
1504 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1505 MultilibBuilder WithoutExceptions =
1506 MultilibBuilder("/430").flag("-exceptions", /*Disallow=*/true);
1507 MultilibBuilder WithExceptions =
1508 MultilibBuilder("/430/exceptions").flag("-exceptions");
1509
1510 // FIXME: when clang starts to support msp430x ISA additional logic
1511 // to select between multilib must be implemented
1512 // MultilibBuilder MSP430xMultilib = MultilibBuilder("/large");
1513
1514 Result.Multilibs.push_back(WithoutExceptions.makeMultilib());
1515 Result.Multilibs.push_back(WithExceptions.makeMultilib());
1516 Result.Multilibs.FilterOut(NonExistent);
1517
1519 addMultilibFlag(Args.hasFlag(options::OPT_fexceptions,
1520 options::OPT_fno_exceptions, false),
1521 "-exceptions", Flags);
1522 if (Result.Multilibs.select(D, Flags, Result.SelectedMultilibs))
1523 return true;
1524
1525 return false;
1526}
1527
1528static void findCSKYMultilibs(const Driver &D, const llvm::Triple &TargetTriple,
1529 StringRef Path, const ArgList &Args,
1531 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1532
1534 std::optional<llvm::StringRef> Res =
1535 tools::csky::getCSKYArchName(D, Args, TargetTriple);
1536
1537 if (!Res)
1538 return;
1539 auto ARCHName = *Res;
1540
1542 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Hard, "-hard-fp",
1543 Flags);
1544 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::SoftFP, "-soft-fp",
1545 Flags);
1546 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Soft, "-soft", Flags);
1547 addMultilibFlag(ARCHName == "ck801", "-march=ck801", Flags);
1548 addMultilibFlag(ARCHName == "ck802", "-march=ck802", Flags);
1549 addMultilibFlag(ARCHName == "ck803", "-march=ck803", Flags);
1550 addMultilibFlag(ARCHName == "ck804", "-march=ck804", Flags);
1551 addMultilibFlag(ARCHName == "ck805", "-march=ck805", Flags);
1552 addMultilibFlag(ARCHName == "ck807", "-march=ck807", Flags);
1553 addMultilibFlag(ARCHName == "ck810", "-march=ck810", Flags);
1554 addMultilibFlag(ARCHName == "ck810v", "-march=ck810v", Flags);
1555 addMultilibFlag(ARCHName == "ck860", "-march=ck860", Flags);
1556 addMultilibFlag(ARCHName == "ck860v", "-march=ck860v", Flags);
1557
1558 bool isBigEndian = false;
1559 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian,
1560 options::OPT_mbig_endian))
1561 isBigEndian = !A->getOption().matches(options::OPT_mlittle_endian);
1562 addMultilibFlag(isBigEndian, "-EB", Flags);
1563
1564 auto HardFloat = MultilibBuilder("/hard-fp").flag("-hard-fp");
1565 auto SoftFpFloat = MultilibBuilder("/soft-fp").flag("-soft-fp");
1566 auto SoftFloat = MultilibBuilder("").flag("-soft");
1567 auto Arch801 = MultilibBuilder("/ck801").flag("-march=ck801");
1568 auto Arch802 = MultilibBuilder("/ck802").flag("-march=ck802");
1569 auto Arch803 = MultilibBuilder("/ck803").flag("-march=ck803");
1570 // CK804 use the same library as CK803
1571 auto Arch804 = MultilibBuilder("/ck803").flag("-march=ck804");
1572 auto Arch805 = MultilibBuilder("/ck805").flag("-march=ck805");
1573 auto Arch807 = MultilibBuilder("/ck807").flag("-march=ck807");
1574 auto Arch810 = MultilibBuilder("").flag("-march=ck810");
1575 auto Arch810v = MultilibBuilder("/ck810v").flag("-march=ck810v");
1576 auto Arch860 = MultilibBuilder("/ck860").flag("-march=ck860");
1577 auto Arch860v = MultilibBuilder("/ck860v").flag("-march=ck860v");
1578 auto BigEndian = MultilibBuilder("/big").flag("-EB");
1579
1580 MultilibSet CSKYMultilibs =
1582 .Maybe(BigEndian)
1583 .Either({Arch801, Arch802, Arch803, Arch804, Arch805, Arch807,
1584 Arch810, Arch810v, Arch860, Arch860v})
1585 .Either(HardFloat, SoftFpFloat, SoftFloat)
1587 .FilterOut(NonExistent);
1588
1589 if (CSKYMultilibs.select(D, Flags, Result.SelectedMultilibs))
1590 Result.Multilibs = CSKYMultilibs;
1591}
1592
1593/// Extend the multi-lib re-use selection mechanism for RISC-V.
1594/// This function will try to re-use multi-lib if they are compatible.
1595/// Definition of compatible:
1596/// - ABI must be the same.
1597/// - multi-lib is a subset of current arch, e.g. multi-lib=march=rv32im
1598/// is a subset of march=rv32imc.
1599/// - march that contains atomic extension can't reuse multi-lib that
1600/// doesn't have atomic, vice versa. e.g. multi-lib=march=rv32im and
1601/// march=rv32ima are not compatible, because software and hardware
1602/// atomic operation can't work together correctly.
1603static bool
1604selectRISCVMultilib(const Driver &D, const MultilibSet &RISCVMultilibSet,
1605 StringRef Arch, const Multilib::flags_list &Flags,
1606 llvm::SmallVectorImpl<Multilib> &SelectedMultilibs) {
1607 // Try to find the perfect matching multi-lib first.
1608 if (RISCVMultilibSet.select(D, Flags, SelectedMultilibs))
1609 return true;
1610
1611 Multilib::flags_list NewFlags;
1612 std::vector<MultilibBuilder> NewMultilibs;
1613
1615 llvm::RISCVISAInfo::parseArchString(
1616 Arch, /*EnableExperimentalExtension=*/true,
1617 /*ExperimentalExtensionVersionCheck=*/false);
1618 // Ignore any error here, we assume it will be handled in another place.
1619 if (llvm::errorToBool(ParseResult.takeError()))
1620 return false;
1621
1622 auto &ISAInfo = *ParseResult;
1623
1624 addMultilibFlag(ISAInfo->getXLen() == 32, "-m32", NewFlags);
1625 addMultilibFlag(ISAInfo->getXLen() == 64, "-m64", NewFlags);
1626
1627 // Collect all flags except march=*
1628 for (StringRef Flag : Flags) {
1629 if (Flag.starts_with("!march=") || Flag.starts_with("-march="))
1630 continue;
1631
1632 NewFlags.push_back(Flag.str());
1633 }
1634
1635 llvm::StringSet<> AllArchExts;
1636 // Reconstruct multi-lib list, and break march option into separated
1637 // extension. e.g. march=rv32im -> +i +m
1638 for (const auto &M : RISCVMultilibSet) {
1639 bool Skip = false;
1640
1641 MultilibBuilder NewMultilib =
1642 MultilibBuilder(M.gccSuffix(), M.osSuffix(), M.includeSuffix());
1643 for (StringRef Flag : M.flags()) {
1644 // Add back all flags except -march.
1645 if (!Flag.consume_front("-march=")) {
1646 NewMultilib.flag(Flag);
1647 continue;
1648 }
1649
1650 // Break down -march into individual extension.
1652 llvm::RISCVISAInfo::parseArchString(
1653 Flag, /*EnableExperimentalExtension=*/true,
1654 /*ExperimentalExtensionVersionCheck=*/false);
1655 // Ignore any error here, we assume it will handled in another place.
1656 if (llvm::errorToBool(MLConfigParseResult.takeError())) {
1657 // We might get a parsing error if rv32e in the list, we could just skip
1658 // that and process the rest of multi-lib configs.
1659 Skip = true;
1660 continue;
1661 }
1662 auto &MLConfigISAInfo = *MLConfigParseResult;
1663
1664 for (auto &MLConfigArchExt : MLConfigISAInfo->getExtensions()) {
1665 auto ExtName = MLConfigArchExt.first;
1666 NewMultilib.flag(Twine("-", ExtName).str());
1667
1668 if (AllArchExts.insert(ExtName).second) {
1669 addMultilibFlag(ISAInfo->hasExtension(ExtName),
1670 Twine("-", ExtName).str(), NewFlags);
1671 }
1672 }
1673
1674 // Check the XLEN explicitly.
1675 if (MLConfigISAInfo->getXLen() == 32) {
1676 NewMultilib.flag("-m32");
1677 NewMultilib.flag("-m64", /*Disallow*/ true);
1678 } else {
1679 NewMultilib.flag("-m32", /*Disallow*/ true);
1680 NewMultilib.flag("-m64");
1681 }
1682
1683 // Atomic extension must be explicitly checked, soft and hard atomic
1684 // operation never co-work correctly.
1685 if (!MLConfigISAInfo->hasExtension("a"))
1686 NewMultilib.flag("-a", /*Disallow*/ true);
1687 }
1688
1689 if (Skip)
1690 continue;
1691
1692 NewMultilibs.emplace_back(NewMultilib);
1693 }
1694
1695 // Build an internal used only multi-lib list, used for checking any
1696 // compatible multi-lib.
1697 MultilibSet NewRISCVMultilibs =
1698 MultilibSetBuilder().Either(NewMultilibs).makeMultilibSet();
1699
1700 if (NewRISCVMultilibs.select(D, NewFlags, SelectedMultilibs))
1701 for (const Multilib &NewSelectedM : SelectedMultilibs)
1702 for (const auto &M : RISCVMultilibSet)
1703 // Look up the corresponding multi-lib entry in original multi-lib set.
1704 if (M.gccSuffix() == NewSelectedM.gccSuffix())
1705 return true;
1706
1707 return false;
1708}
1709
1711 const llvm::Triple &TargetTriple,
1712 StringRef Path, const ArgList &Args,
1714 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1715 struct RiscvMultilib {
1716 StringRef march;
1717 StringRef mabi;
1718 };
1719 // currently only support the set of multilibs like riscv-gnu-toolchain does.
1720 // TODO: support MULTILIB_REUSE
1721 constexpr RiscvMultilib RISCVMultilibSet[] = {
1722 {"rv32i", "ilp32"}, {"rv32im", "ilp32"}, {"rv32iac", "ilp32"},
1723 {"rv32imac", "ilp32"}, {"rv32imafc", "ilp32f"}, {"rv64imac", "lp64"},
1724 {"rv64imafdc", "lp64d"}};
1725
1726 std::vector<MultilibBuilder> Ms;
1727 for (auto Element : RISCVMultilibSet) {
1728 // multilib path rule is ${march}/${mabi}
1729 Ms.emplace_back(
1731 (Twine(Element.march) + "/" + Twine(Element.mabi)).str())
1732 .flag(Twine("-march=", Element.march).str())
1733 .flag(Twine("-mabi=", Element.mabi).str()));
1734 }
1735 MultilibSet RISCVMultilibs =
1737 .Either(Ms)
1739 .FilterOut(NonExistent)
1740 .setFilePathsCallback([](const Multilib &M) {
1741 return std::vector<std::string>(
1742 {M.gccSuffix(),
1743 "/../../../../riscv64-unknown-elf/lib" + M.gccSuffix(),
1744 "/../../../../riscv32-unknown-elf/lib" + M.gccSuffix()});
1745 });
1746
1748 llvm::StringSet<> Added_ABIs;
1749 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1750 std::string MArch = tools::riscv::getRISCVArch(Args, TargetTriple);
1751 for (auto Element : RISCVMultilibSet) {
1752 addMultilibFlag(MArch == Element.march,
1753 Twine("-march=", Element.march).str().c_str(), Flags);
1754 if (!Added_ABIs.count(Element.mabi)) {
1755 Added_ABIs.insert(Element.mabi);
1756 addMultilibFlag(ABIName == Element.mabi,
1757 Twine("-mabi=", Element.mabi).str().c_str(), Flags);
1758 }
1759 }
1760
1761 if (selectRISCVMultilib(D, RISCVMultilibs, MArch, Flags,
1762 Result.SelectedMultilibs))
1763 Result.Multilibs = RISCVMultilibs;
1764}
1765
1766static void findRISCVMultilibs(const Driver &D,
1767 const llvm::Triple &TargetTriple, StringRef Path,
1768 const ArgList &Args, DetectedMultilibs &Result) {
1769 if (TargetTriple.getOS() == llvm::Triple::UnknownOS)
1770 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result);
1771
1772 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1773 MultilibBuilder Ilp32 =
1774 MultilibBuilder("lib32/ilp32").flag("-m32").flag("-mabi=ilp32");
1775 MultilibBuilder Ilp32f =
1776 MultilibBuilder("lib32/ilp32f").flag("-m32").flag("-mabi=ilp32f");
1777 MultilibBuilder Ilp32d =
1778 MultilibBuilder("lib32/ilp32d").flag("-m32").flag("-mabi=ilp32d");
1779 MultilibBuilder Lp64 =
1780 MultilibBuilder("lib64/lp64").flag("-m64").flag("-mabi=lp64");
1781 MultilibBuilder Lp64f =
1782 MultilibBuilder("lib64/lp64f").flag("-m64").flag("-mabi=lp64f");
1783 MultilibBuilder Lp64d =
1784 MultilibBuilder("lib64/lp64d").flag("-m64").flag("-mabi=lp64d");
1785 MultilibSet RISCVMultilibs =
1787 .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d})
1788 .makeMultilibSet()
1789 .FilterOut(NonExistent);
1790
1792 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64;
1793 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple);
1794
1795 addMultilibFlag(!IsRV64, "-m32", Flags);
1796 addMultilibFlag(IsRV64, "-m64", Flags);
1797 addMultilibFlag(ABIName == "ilp32", "-mabi=ilp32", Flags);
1798 addMultilibFlag(ABIName == "ilp32f", "-mabi=ilp32f", Flags);
1799 addMultilibFlag(ABIName == "ilp32d", "-mabi=ilp32d", Flags);
1800 addMultilibFlag(ABIName == "lp64", "-mabi=lp64", Flags);
1801 addMultilibFlag(ABIName == "lp64f", "-mabi=lp64f", Flags);
1802 addMultilibFlag(ABIName == "lp64d", "-mabi=lp64d", Flags);
1803
1804 if (RISCVMultilibs.select(D, Flags, Result.SelectedMultilibs))
1805 Result.Multilibs = RISCVMultilibs;
1806}
1807
1808static bool findBiarchMultilibs(const Driver &D,
1809 const llvm::Triple &TargetTriple,
1810 StringRef Path, const ArgList &Args,
1811 bool NeedsBiarchSuffix,
1813 MultilibBuilder DefaultBuilder;
1814
1815 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1816 // in what would normally be GCCInstallPath and put the 64-bit
1817 // libs in a subdirectory named 64. The simple logic we follow is that
1818 // *if* there is a subdirectory of the right name with crtbegin.o in it,
1819 // we use that. If not, and if not a biarch triple alias, we look for
1820 // crtbegin.o without the subdirectory.
1821
1822 StringRef Suff64 = "/64";
1823 // Solaris uses platform-specific suffixes instead of /64.
1824 if (TargetTriple.isOSSolaris()) {
1825 switch (TargetTriple.getArch()) {
1826 case llvm::Triple::x86:
1827 case llvm::Triple::x86_64:
1828 Suff64 = "/amd64";
1829 break;
1830 case llvm::Triple::sparc:
1831 case llvm::Triple::sparcv9:
1832 Suff64 = "/sparcv9";
1833 break;
1834 default:
1835 break;
1836 }
1837 }
1838
1839 Multilib Alt64 = MultilibBuilder()
1840 .gccSuffix(Suff64)
1841 .includeSuffix(Suff64)
1842 .flag("-m32", /*Disallow=*/true)
1843 .flag("-m64")
1844 .flag("-mx32", /*Disallow=*/true)
1845 .makeMultilib();
1846 Multilib Alt32 = MultilibBuilder()
1847 .gccSuffix("/32")
1848 .includeSuffix("/32")
1849 .flag("-m32")
1850 .flag("-m64", /*Disallow=*/true)
1851 .flag("-mx32", /*Disallow=*/true)
1852 .makeMultilib();
1853 Multilib Altx32 = MultilibBuilder()
1854 .gccSuffix("/x32")
1855 .includeSuffix("/x32")
1856 .flag("-m32", /*Disallow=*/true)
1857 .flag("-m64", /*Disallow=*/true)
1858 .flag("-mx32")
1859 .makeMultilib();
1860 Multilib Alt32sparc = MultilibBuilder()
1861 .gccSuffix("/sparcv8plus")
1862 .includeSuffix("/sparcv8plus")
1863 .flag("-m32")
1864 .flag("-m64", /*Disallow=*/true)
1865 .makeMultilib();
1866
1867 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
1868 FilterNonExistent NonExistent(
1869 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
1870
1871 // Determine default multilib from: 32, 64, x32
1872 // Also handle cases such as 64 on 32, 32 on 64, etc.
1873 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
1874 const bool IsX32 = TargetTriple.isX32();
1875 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
1876 Want = WANT64;
1877 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32sparc))
1878 Want = WANT64;
1879 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
1880 Want = WANT64;
1881 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
1882 Want = WANT32;
1883 else if (TargetTriple.isArch64Bit() && !NonExistent(Alt32sparc))
1884 Want = WANT64;
1885 else {
1886 if (TargetTriple.isArch32Bit())
1887 Want = NeedsBiarchSuffix ? WANT64 : WANT32;
1888 else if (IsX32)
1889 Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
1890 else
1891 Want = NeedsBiarchSuffix ? WANT32 : WANT64;
1892 }
1893
1894 if (Want == WANT32)
1895 DefaultBuilder.flag("-m32")
1896 .flag("-m64", /*Disallow=*/true)
1897 .flag("-mx32", /*Disallow=*/true);
1898 else if (Want == WANT64)
1899 DefaultBuilder.flag("-m32", /*Disallow=*/true)
1900 .flag("-m64")
1901 .flag("-mx32", /*Disallow=*/true);
1902 else if (Want == WANTX32)
1903 DefaultBuilder.flag("-m32", /*Disallow=*/true)
1904 .flag("-m64", /*Disallow=*/true)
1905 .flag("-mx32");
1906 else
1907 return false;
1908
1909 Multilib Default = DefaultBuilder.makeMultilib();
1910
1911 Result.Multilibs.push_back(Default);
1912 Result.Multilibs.push_back(Alt64);
1913 Result.Multilibs.push_back(Alt32);
1914 Result.Multilibs.push_back(Altx32);
1915 Result.Multilibs.push_back(Alt32sparc);
1916
1917 Result.Multilibs.FilterOut(NonExistent);
1918
1920 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "-m64", Flags);
1921 addMultilibFlag(TargetTriple.isArch32Bit(), "-m32", Flags);
1922 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "-mx32", Flags);
1923
1924 if (!Result.Multilibs.select(D, Flags, Result.SelectedMultilibs))
1925 return false;
1926
1927 if (Result.SelectedMultilibs.back() == Alt64 ||
1928 Result.SelectedMultilibs.back() == Alt32 ||
1929 Result.SelectedMultilibs.back() == Altx32 ||
1930 Result.SelectedMultilibs.back() == Alt32sparc)
1931 Result.BiarchSibling = Default;
1932
1933 return true;
1934}
1935
1936/// Generic_GCC - A tool chain using the 'gcc' command to perform
1937/// all subcommands; this relies on gcc translating the majority of
1938/// command line options.
1939
1940/// Less-than for GCCVersion, implementing a Strict Weak Ordering.
1941bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
1942 int RHSPatch,
1943 StringRef RHSPatchSuffix) const {
1944 if (Major != RHSMajor)
1945 return Major < RHSMajor;
1946 if (Minor != RHSMinor) {
1947 // Note that versions without a specified minor sort higher than those with
1948 // a minor.
1949 if (RHSMinor == -1)
1950 return true;
1951 if (Minor == -1)
1952 return false;
1953 return Minor < RHSMinor;
1954 }
1955 if (Patch != RHSPatch) {
1956 // Note that versions without a specified patch sort higher than those with
1957 // a patch.
1958 if (RHSPatch == -1)
1959 return true;
1960 if (Patch == -1)
1961 return false;
1962
1963 // Otherwise just sort on the patch itself.
1964 return Patch < RHSPatch;
1965 }
1966 if (PatchSuffix != RHSPatchSuffix) {
1967 // Sort empty suffixes higher.
1968 if (RHSPatchSuffix.empty())
1969 return true;
1970 if (PatchSuffix.empty())
1971 return false;
1972
1973 // Provide a lexicographic sort to make this a total ordering.
1974 return PatchSuffix < RHSPatchSuffix;
1975 }
1976
1977 // The versions are equal.
1978 return false;
1979}
1980
1981/// Parse a GCCVersion object out of a string of text.
1982///
1983/// This is the primary means of forming GCCVersion objects.
1984/*static*/
1986 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1987 std::pair<StringRef, StringRef> First = VersionText.split('.');
1988 std::pair<StringRef, StringRef> Second = First.second.split('.');
1989
1990 StringRef MajorStr = First.first;
1991 StringRef MinorStr = Second.first;
1992 StringRef PatchStr = Second.second;
1993
1994 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""};
1995
1996 // Parse version number strings such as:
1997 // 5
1998 // 4.4
1999 // 4.4-patched
2000 // 4.4.0
2001 // 4.4.x
2002 // 4.4.2-rc4
2003 // 4.4.x-patched
2004 // 10-win32
2005 // Split on '.', handle 1, 2 or 3 such segments. Each segment must contain
2006 // purely a number, except for the last one, where a non-number suffix
2007 // is stored in PatchSuffix. The third segment is allowed to not contain
2008 // a number at all.
2009
2010 auto TryParseLastNumber = [&](StringRef Segment, int &Number,
2011 std::string &OutStr) -> bool {
2012 // Look for a number prefix and parse that, and split out any trailing
2013 // string into GoodVersion.PatchSuffix.
2014
2015 if (size_t EndNumber = Segment.find_first_not_of("0123456789")) {
2016 StringRef NumberStr = Segment.slice(0, EndNumber);
2017 if (NumberStr.getAsInteger(10, Number) || Number < 0)
2018 return false;
2019 OutStr = NumberStr;
2020 GoodVersion.PatchSuffix = Segment.substr(EndNumber);
2021 return true;
2022 }
2023 return false;
2024 };
2025 auto TryParseNumber = [](StringRef Segment, int &Number) -> bool {
2026 if (Segment.getAsInteger(10, Number) || Number < 0)
2027 return false;
2028 return true;
2029 };
2030
2031 if (MinorStr.empty()) {
2032 // If no minor string, major is the last segment
2033 if (!TryParseLastNumber(MajorStr, GoodVersion.Major, GoodVersion.MajorStr))
2034 return BadVersion;
2035 return GoodVersion;
2036 }
2037
2038 if (!TryParseNumber(MajorStr, GoodVersion.Major))
2039 return BadVersion;
2040 GoodVersion.MajorStr = MajorStr;
2041
2042 if (PatchStr.empty()) {
2043 // If no patch string, minor is the last segment
2044 if (!TryParseLastNumber(MinorStr, GoodVersion.Minor, GoodVersion.MinorStr))
2045 return BadVersion;
2046 return GoodVersion;
2047 }
2048
2049 if (!TryParseNumber(MinorStr, GoodVersion.Minor))
2050 return BadVersion;
2051 GoodVersion.MinorStr = MinorStr;
2052
2053 // For the last segment, tolerate a missing number.
2054 std::string DummyStr;
2055 TryParseLastNumber(PatchStr, GoodVersion.Patch, DummyStr);
2056 return GoodVersion;
2057}
2058
2059static llvm::StringRef getGCCToolchainDir(const ArgList &Args,
2060 llvm::StringRef SysRoot) {
2061 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain);
2062 if (A)
2063 return A->getValue();
2064
2065 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX.
2066 // GCC_INSTALL_PREFIX specifies the gcc installation for the default
2067 // sysroot and is likely not valid with a different sysroot.
2068 if (!SysRoot.empty())
2069 return "";
2070
2071 return GCC_INSTALL_PREFIX;
2072}
2073
2074/// Initialize a GCCInstallationDetector from the driver.
2075///
2076/// This performs all of the autodetection and sets up the various paths.
2077/// Once constructed, a GCCInstallationDetector is essentially immutable.
2078///
2079/// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
2080/// should instead pull the target out of the driver. This is currently
2081/// necessary because the driver doesn't store the final version of the target
2082/// triple.
2084 const llvm::Triple &TargetTriple, const ArgList &Args) {
2085 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
2086 ? TargetTriple.get64BitArchVariant()
2087 : TargetTriple.get32BitArchVariant();
2088 // The library directories which may contain GCC installations.
2089 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
2090 // The compatible GCC triples for this particular architecture.
2091 SmallVector<StringRef, 16> CandidateTripleAliases;
2092 SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
2093 // Add some triples that we want to check first.
2094 CandidateTripleAliases.push_back(TargetTriple.str());
2095 std::string TripleNoVendor, BiarchTripleNoVendor;
2096 if (TargetTriple.getVendor() == llvm::Triple::UnknownVendor) {
2097 StringRef OSEnv = TargetTriple.getOSAndEnvironmentName();
2098 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32)
2099 OSEnv = "linux-gnu";
2100 TripleNoVendor = (TargetTriple.getArchName().str() + '-' + OSEnv).str();
2101 CandidateTripleAliases.push_back(TripleNoVendor);
2102 if (BiarchVariantTriple.getArch() != llvm::Triple::UnknownArch) {
2103 BiarchTripleNoVendor =
2104 (BiarchVariantTriple.getArchName().str() + '-' + OSEnv).str();
2105 CandidateBiarchTripleAliases.push_back(BiarchTripleNoVendor);
2106 }
2107 }
2108
2109 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs,
2110 CandidateTripleAliases, CandidateBiarchLibDirs,
2111 CandidateBiarchTripleAliases);
2112
2113 // If --gcc-install-dir= is specified, skip filesystem detection.
2114 if (const Arg *A =
2115 Args.getLastArg(clang::driver::options::OPT_gcc_install_dir_EQ);
2116 A && A->getValue()[0]) {
2117 StringRef InstallDir = A->getValue();
2118 if (!ScanGCCForMultilibs(TargetTriple, Args, InstallDir, false)) {
2119 D.Diag(diag::err_drv_invalid_gcc_install_dir) << InstallDir;
2120 } else {
2121 (void)InstallDir.consume_back("/");
2122 StringRef VersionText = llvm::sys::path::filename(InstallDir);
2123 StringRef TripleText =
2124 llvm::sys::path::filename(llvm::sys::path::parent_path(InstallDir));
2125
2126 SelectedInstallation.Version = GCCVersion::Parse(VersionText);
2127 SelectedInstallation.GCCTriple.setTriple(TripleText);
2128 SelectedInstallation.GCCInstallPath = std::string(InstallDir);
2129 SelectedInstallation.GCCParentLibPath =
2130 SelectedInstallation.GCCInstallPath + "/../../..";
2131 IsValid = true;
2132 }
2133 return;
2134 }
2135
2136 // If --gcc-triple is specified use this instead of trying to
2137 // auto-detect a triple.
2138 if (const Arg *A =
2139 Args.getLastArg(clang::driver::options::OPT_gcc_triple_EQ)) {
2140 StringRef GCCTriple = A->getValue();
2141 CandidateTripleAliases.clear();
2142 CandidateTripleAliases.push_back(GCCTriple);
2143 }
2144
2145 // Compute the set of prefixes for our search.
2147 StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot);
2148 if (GCCToolchainDir != "") {
2149 if (GCCToolchainDir.back() == '/')
2150 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
2151
2152 Prefixes.push_back(std::string(GCCToolchainDir));
2153 } else {
2154 // If we have a SysRoot, try that first.
2155 if (!D.SysRoot.empty()) {
2156 Prefixes.push_back(D.SysRoot);
2157 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
2158 }
2159
2160 // Then look for gcc installed alongside clang.
2161 Prefixes.push_back(D.Dir + "/..");
2162
2163 // Next, look for prefix(es) that correspond to distribution-supplied gcc
2164 // installations.
2165 if (D.SysRoot.empty()) {
2166 // Typically /usr.
2167 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot);
2168 }
2169
2170 // Try to respect gcc-config on Gentoo if --gcc-toolchain is not provided.
2171 // This avoids accidentally enforcing the system GCC version when using a
2172 // custom toolchain.
2173 SmallVector<StringRef, 16> GentooTestTriples;
2174 // Try to match an exact triple as target triple first.
2175 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for
2176 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu"
2177 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching
2178 // triple x86_64-gentoo-linux-gnu is present.
2179 GentooTestTriples.push_back(TargetTriple.str());
2180 GentooTestTriples.append(CandidateTripleAliases.begin(),
2181 CandidateTripleAliases.end());
2182 if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples,
2183 CandidateBiarchTripleAliases))
2184 return;
2185 }
2186
2187 // Loop over the various components which exist and select the best GCC
2188 // installation available. GCC installs are ranked by version number.
2189 const GCCVersion VersionZero = GCCVersion::Parse("0.0.0");
2190 SelectedInstallation.Version = VersionZero;
2191 for (const std::string &Prefix : Prefixes) {
2192 auto &VFS = D.getVFS();
2193 if (!VFS.exists(Prefix))
2194 continue;
2195 for (StringRef Suffix : CandidateLibDirs) {
2196 const std::string LibDir = concat(Prefix, Suffix);
2197 if (!VFS.exists(LibDir))
2198 continue;
2199 // Maybe filter out <libdir>/gcc and <libdir>/gcc-cross.
2200 bool GCCDirExists = VFS.exists(LibDir + "/gcc");
2201 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross");
2202 for (StringRef Candidate : CandidateTripleAliases)
2203 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, false,
2204 GCCDirExists, GCCCrossDirExists);
2205 }
2206 for (StringRef Suffix : CandidateBiarchLibDirs) {
2207 const std::string LibDir = Prefix + Suffix.str();
2208 if (!VFS.exists(LibDir))
2209 continue;
2210 bool GCCDirExists = VFS.exists(LibDir + "/gcc");
2211 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross");
2212 for (StringRef Candidate : CandidateBiarchTripleAliases)
2213 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, true,
2214 GCCDirExists, GCCCrossDirExists);
2215 }
2216
2217 // Skip other prefixes once a GCC installation is found.
2218 if (SelectedInstallation.Version > VersionZero)
2219 break;
2220 }
2221}
2222
2224 for (const auto &InstallPath : CandidateGCCInstallPaths)
2225 OS << "Found candidate GCC installation: " << InstallPath << "\n";
2226
2227 if (!SelectedInstallation.GCCInstallPath.empty())
2228 OS << "Selected GCC installation: " << SelectedInstallation.GCCInstallPath
2229 << "\n";
2230
2231 for (const auto &Multilib : Multilibs)
2232 OS << "Candidate multilib: " << Multilib << "\n";
2233
2234 if (Multilibs.size() != 0 ||
2235 !SelectedInstallation.SelectedMultilib.isDefault())
2236 OS << "Selected multilib: " << SelectedInstallation.SelectedMultilib
2237 << "\n";
2238}
2239
2241 if (BiarchSibling) {
2242 M = *BiarchSibling;
2243 return true;
2244 }
2245 return false;
2246}
2247
2248void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
2249 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes,
2250 StringRef SysRoot) {
2251
2252 if (TargetTriple.isOSHaiku()) {
2253 Prefixes.push_back(concat(SysRoot, "/boot/system/develop/tools"));
2254 return;
2255 }
2256
2257 if (TargetTriple.isOSSolaris()) {
2258 // Solaris is a special case.
2259 // The GCC installation is under
2260 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/
2261 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with
2262 // /usr/gcc/<version> as a prefix.
2263
2265 std::string PrefixDir = concat(SysRoot, "/usr/gcc");
2266 std::error_code EC;
2267 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC),
2268 LE;
2269 !EC && LI != LE; LI = LI.increment(EC)) {
2270 StringRef VersionText = llvm::sys::path::filename(LI->path());
2271 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2272
2273 // Filter out obviously bad entries.
2274 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1))
2275 continue;
2276
2277 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str();
2278 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc";
2279 if (!D.getVFS().exists(CandidateLibPath))
2280 continue;
2281
2282 SolarisPrefixes.emplace_back(
2283 std::make_pair(CandidateVersion, CandidatePrefix));
2284 }
2285 // Sort in reverse order so GCCInstallationDetector::init picks the latest.
2286 std::sort(SolarisPrefixes.rbegin(), SolarisPrefixes.rend());
2287 for (auto p : SolarisPrefixes)
2288 Prefixes.emplace_back(p.second);
2289 return;
2290 }
2291
2292 // For Linux, if --sysroot is not specified, look for RHEL/CentOS devtoolsets
2293 // and gcc-toolsets.
2294 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux &&
2295 D.getVFS().exists("/opt/rh")) {
2296 // TODO: We may want to remove this, since the functionality
2297 // can be achieved using config files.
2298 Prefixes.push_back("/opt/rh/gcc-toolset-12/root/usr");
2299 Prefixes.push_back("/opt/rh/gcc-toolset-11/root/usr");
2300 Prefixes.push_back("/opt/rh/gcc-toolset-10/root/usr");
2301 Prefixes.push_back("/opt/rh/devtoolset-12/root/usr");
2302 Prefixes.push_back("/opt/rh/devtoolset-11/root/usr");
2303 Prefixes.push_back("/opt/rh/devtoolset-10/root/usr");
2304 Prefixes.push_back("/opt/rh/devtoolset-9/root/usr");
2305 Prefixes.push_back("/opt/rh/devtoolset-8/root/usr");
2306 Prefixes.push_back("/opt/rh/devtoolset-7/root/usr");
2307 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr");
2308 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr");
2309 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr");
2310 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr");
2311 }
2312
2313 // Fall back to /usr which is used by most non-Solaris systems.
2314 Prefixes.push_back(concat(SysRoot, "/usr"));
2315}
2316
2317/*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
2318 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
2320 SmallVectorImpl<StringRef> &TripleAliases,
2321 SmallVectorImpl<StringRef> &BiarchLibDirs,
2322 SmallVectorImpl<StringRef> &BiarchTripleAliases) {
2323 // Declare a bunch of static data sets that we'll select between below. These
2324 // are specifically designed to always refer to string literals to avoid any
2325 // lifetime or initialization issues.
2326 //
2327 // The *Triples variables hard code some triples so that, for example,
2328 // --target=aarch64 (incomplete triple) can detect lib/aarch64-linux-gnu.
2329 // They are not needed when the user has correct LLVM_DEFAULT_TARGET_TRIPLE
2330 // and always uses the full --target (e.g. --target=aarch64-linux-gnu). The
2331 // lists should shrink over time. Please don't add more elements to *Triples.
2332 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
2333 static const char *const AArch64Triples[] = {
2334 "aarch64-none-linux-gnu", "aarch64-redhat-linux", "aarch64-suse-linux"};
2335 static const char *const AArch64beLibDirs[] = {"/lib"};
2336 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu"};
2337
2338 static const char *const ARMLibDirs[] = {"/lib"};
2339 static const char *const ARMTriples[] = {"arm-linux-gnueabi"};
2340 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
2341 "armv7hl-redhat-linux-gnueabi",
2342 "armv6hl-suse-linux-gnueabi",
2343 "armv7hl-suse-linux-gnueabi"};
2344 static const char *const ARMebLibDirs[] = {"/lib"};
2345 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi"};
2346 static const char *const ARMebHFTriples[] = {
2347 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
2348
2349 static const char *const AVRLibDirs[] = {"/lib"};
2350 static const char *const AVRTriples[] = {"avr"};
2351
2352 static const char *const CSKYLibDirs[] = {"/lib"};
2353 static const char *const CSKYTriples[] = {
2354 "csky-linux-gnuabiv2", "csky-linux-uclibcabiv2", "csky-elf-noneabiv2"};
2355
2356 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
2357 static const char *const X86_64Triples[] = {
2358 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
2359 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
2360 "x86_64-redhat-linux", "x86_64-suse-linux",
2361 "x86_64-manbo-linux-gnu", "x86_64-slackware-linux",
2362 "x86_64-unknown-linux", "x86_64-amazon-linux"};
2363 static const char *const X32Triples[] = {"x86_64-linux-gnux32",
2364 "x86_64-pc-linux-gnux32"};
2365 static const char *const X32LibDirs[] = {"/libx32", "/lib"};
2366 static const char *const X86LibDirs[] = {"/lib32", "/lib"};
2367 static const char *const X86Triples[] = {
2368 "i586-linux-gnu", "i686-linux-gnu", "i686-pc-linux-gnu",
2369 "i386-redhat-linux6E", "i686-redhat-linux", "i386-redhat-linux",
2370 "i586-suse-linux", "i686-montavista-linux",
2371 };
2372
2373 static const char *const LoongArch64LibDirs[] = {"/lib64", "/lib"};
2374 static const char *const LoongArch64Triples[] = {
2375 "loongarch64-linux-gnu", "loongarch64-unknown-linux-gnu"};
2376
2377 static const char *const M68kLibDirs[] = {"/lib"};
2378 static const char *const M68kTriples[] = {"m68k-unknown-linux-gnu",
2379 "m68k-suse-linux"};
2380
2381 static const char *const MIPSLibDirs[] = {"/libo32", "/lib"};
2382 static const char *const MIPSTriples[] = {
2383 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu",
2384 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"};
2385 static const char *const MIPSELLibDirs[] = {"/libo32", "/lib"};
2386 static const char *const MIPSELTriples[] = {"mipsel-linux-gnu",
2387 "mips-img-linux-gnu"};
2388
2389 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
2390 static const char *const MIPS64Triples[] = {
2391 "mips-mti-linux-gnu", "mips-img-linux-gnu", "mips64-linux-gnuabi64",
2392 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"};
2393 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
2394 static const char *const MIPS64ELTriples[] = {
2395 "mips-mti-linux-gnu", "mips-img-linux-gnu", "mips64el-linux-gnuabi64",
2396 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64"};
2397
2398 static const char *const MIPSN32LibDirs[] = {"/lib32"};
2399 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32",
2400 "mipsisa64r6-linux-gnuabin32"};
2401 static const char *const MIPSN32ELLibDirs[] = {"/lib32"};
2402 static const char *const MIPSN32ELTriples[] = {
2403 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"};
2404
2405 static const char *const MSP430LibDirs[] = {"/lib"};
2406 static const char *const MSP430Triples[] = {"msp430-elf"};
2407
2408 static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
2409 static const char *const PPCTriples[] = {
2410 "powerpc-unknown-linux-gnu",
2411 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a
2412 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux".
2413 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"};
2414 static const char *const PPCLELibDirs[] = {"/lib32", "/lib"};
2415 static const char *const PPCLETriples[] = {"powerpcle-unknown-linux-gnu",
2416 "powerpcle-linux-musl"};
2417
2418 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
2419 static const char *const PPC64Triples[] = {"powerpc64-unknown-linux-gnu",
2420 "powerpc64-suse-linux",
2421 "ppc64-redhat-linux"};
2422 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
2423 static const char *const PPC64LETriples[] = {
2424 "powerpc64le-unknown-linux-gnu", "powerpc64le-none-linux-gnu",
2425 "powerpc64le-suse-linux", "ppc64le-redhat-linux"};
2426
2427 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"};
2428 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu",
2429 "riscv32-unknown-elf"};
2430 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"};
2431 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu",
2432 "riscv64-unknown-elf"};
2433
2434 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
2435 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
2436 "sparcv8-linux-gnu"};
2437 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
2438 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
2439 "sparcv9-linux-gnu"};
2440
2441 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
2442 static const char *const SystemZTriples[] = {
2443 "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu", "s390x-suse-linux",
2444 "s390x-redhat-linux"};
2445
2446 using std::begin;
2447 using std::end;
2448
2449 if (TargetTriple.isOSSolaris()) {
2450 static const char *const SolarisLibDirs[] = {"/lib"};
2451 static const char *const SolarisSparcV8Triples[] = {
2452 "sparc-sun-solaris2.11"};
2453 static const char *const SolarisSparcV9Triples[] = {
2454 "sparcv9-sun-solaris2.11"};
2455 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11"};
2456 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11"};
2457 LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
2458 BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs));
2459 switch (TargetTriple.getArch()) {
2460 case llvm::Triple::x86:
2461 TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples));
2462 BiarchTripleAliases.append(begin(SolarisX86_64Triples),
2463 end(SolarisX86_64Triples));
2464 break;
2465 case llvm::Triple::x86_64:
2466 TripleAliases.append(begin(SolarisX86_64Triples),
2467 end(SolarisX86_64Triples));
2468 BiarchTripleAliases.append(begin(SolarisX86Triples),
2469 end(SolarisX86Triples));
2470 break;
2471 case llvm::Triple::sparc:
2472 TripleAliases.append(begin(SolarisSparcV8Triples),
2473 end(SolarisSparcV8Triples));
2474 BiarchTripleAliases.append(begin(SolarisSparcV9Triples),
2475 end(SolarisSparcV9Triples));
2476 break;
2477 case llvm::Triple::sparcv9:
2478 TripleAliases.append(begin(SolarisSparcV9Triples),
2479 end(SolarisSparcV9Triples));
2480 BiarchTripleAliases.append(begin(SolarisSparcV8Triples),
2481 end(SolarisSparcV8Triples));
2482 break;
2483 default:
2484 break;
2485 }
2486 return;
2487 }
2488
2489 // Android targets should not use GNU/Linux tools or libraries.
2490 if (TargetTriple.isAndroid()) {
2491 static const char *const AArch64AndroidTriples[] = {
2492 "aarch64-linux-android"};
2493 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"};
2494 static const char *const X86AndroidTriples[] = {"i686-linux-android"};
2495 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"};
2496
2497 switch (TargetTriple.getArch()) {
2498 case llvm::Triple::aarch64:
2499 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2500 TripleAliases.append(begin(AArch64AndroidTriples),
2501 end(AArch64AndroidTriples));
2502 break;
2503 case llvm::Triple::arm:
2504 case llvm::Triple::thumb:
2505 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2506 TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples));
2507 break;
2508 case llvm::Triple::x86_64:
2509 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2510 TripleAliases.append(begin(X86_64AndroidTriples),
2511 end(X86_64AndroidTriples));
2512 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2513 BiarchTripleAliases.append(begin(X86AndroidTriples),
2514 end(X86AndroidTriples));
2515 break;
2516 case llvm::Triple::x86:
2517 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2518 TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples));
2519 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2520 BiarchTripleAliases.append(begin(X86_64AndroidTriples),
2521 end(X86_64AndroidTriples));
2522 break;
2523 default:
2524 break;
2525 }
2526
2527 return;
2528 }
2529
2530 if (TargetTriple.isOSHurd()) {
2531 switch (TargetTriple.getArch()) {
2532 case llvm::Triple::x86_64:
2533 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2534 TripleAliases.push_back("x86_64-gnu");
2535 break;
2536 case llvm::Triple::x86:
2537 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2538 TripleAliases.push_back("i686-gnu");
2539 break;
2540 default:
2541 break;
2542 }
2543
2544 return;
2545 }
2546
2547 if (TargetTriple.isWindowsCygwinEnvironment()) {
2548 LibDirs.push_back("/lib");
2549 switch (TargetTriple.getArch()) {
2550 case llvm::Triple::x86_64:
2551 TripleAliases.append({"x86_64-pc-cygwin", "x86_64-pc-msys"});
2552 break;
2553 case llvm::Triple::x86:
2554 TripleAliases.append({"i686-pc-cygwin", "i686-pc-msys"});
2555 break;
2556 default:
2557 break;
2558 }
2559
2560 return;
2561 }
2562
2563 switch (TargetTriple.getArch()) {
2564 case llvm::Triple::aarch64:
2565 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2566 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2567 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs));
2568 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples));
2569 break;
2570 case llvm::Triple::aarch64_be:
2571 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2572 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2573 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs));
2574 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples));
2575 break;
2576 case llvm::Triple::arm:
2577 case llvm::Triple::thumb:
2578 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs));
2579 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF ||
2580 TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHFT64 ||
2581 TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF ||
2582 TargetTriple.getEnvironment() == llvm::Triple::EABIHF) {
2583 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples));
2584 } else {
2585 TripleAliases.append(begin(ARMTriples), end(ARMTriples));
2586 }
2587 break;
2588 case llvm::Triple::armeb:
2589 case llvm::Triple::thumbeb:
2590 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs));
2591 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF ||
2592 TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHFT64 ||
2593 TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF ||
2594 TargetTriple.getEnvironment() == llvm::Triple::EABIHF) {
2595 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples));
2596 } else {
2597 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples));
2598 }
2599 break;
2600 case llvm::Triple::avr:
2601 LibDirs.append(begin(AVRLibDirs), end(AVRLibDirs));
2602 TripleAliases.append(begin(AVRTriples), end(AVRTriples));
2603 break;
2604 case llvm::Triple::csky:
2605 LibDirs.append(begin(CSKYLibDirs), end(CSKYLibDirs));
2606 TripleAliases.append(begin(CSKYTriples), end(CSKYTriples));
2607 break;
2608 case llvm::Triple::x86_64:
2609 if (TargetTriple.isX32()) {
2610 LibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2611 TripleAliases.append(begin(X32Triples), end(X32Triples));
2612 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2613 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2614 } else {
2615 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2616 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2617 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2618 BiarchTripleAliases.append(begin(X32Triples), end(X32Triples));
2619 }
2620 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2621 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples));
2622 break;
2623 case llvm::Triple::x86:
2624 LibDirs.append(begin(X86LibDirs), end(X86LibDirs));
2625 // MCU toolchain is 32 bit only and its triple alias is TargetTriple
2626 // itself, which will be appended below.
2627 if (!TargetTriple.isOSIAMCU()) {
2628 TripleAliases.append(begin(X86Triples), end(X86Triples));
2629 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs));
2630 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples));
2631 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs));
2632 BiarchTripleAliases.append(begin(X32Triples), end(X32Triples));
2633 }
2634 break;
2635 // TODO: Handle loongarch32.
2636 case llvm::Triple::loongarch64:
2637 LibDirs.append(begin(LoongArch64LibDirs), end(LoongArch64LibDirs));
2638 TripleAliases.append(begin(LoongArch64Triples), end(LoongArch64Triples));
2639 break;
2640 case llvm::Triple::m68k:
2641 LibDirs.append(begin(M68kLibDirs), end(M68kLibDirs));
2642 TripleAliases.append(begin(M68kTriples), end(M68kTriples));
2643 break;
2644 case llvm::Triple::mips:
2645 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2646 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2647 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2648 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2649 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2650 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2651 break;
2652 case llvm::Triple::mipsel:
2653 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2654 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2655 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2656 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2657 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2658 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2659 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2660 break;
2661 case llvm::Triple::mips64:
2662 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs));
2663 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples));
2664 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs));
2665 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2666 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs));
2667 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples));
2668 break;
2669 case llvm::Triple::mips64el:
2670 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs));
2671 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples));
2672 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs));
2673 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples));
2674 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs));
2675 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples));
2676 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples));
2677 break;
2678 case llvm::Triple::msp430:
2679 LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs));
2680 TripleAliases.append(begin(MSP430Triples), end(MSP430Triples));
2681 break;
2682 case llvm::Triple::ppc:
2683 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2684 TripleAliases.append(begin(PPCTriples), end(PPCTriples));
2685 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2686 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2687 break;
2688 case llvm::Triple::ppcle:
2689 LibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs));
2690 TripleAliases.append(begin(PPCLETriples), end(PPCLETriples));
2691 BiarchLibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
2692 BiarchTripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
2693 break;
2694 case llvm::Triple::ppc64:
2695 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs));
2696 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples));
2697 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs));
2698 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples));
2699 break;
2700 case llvm::Triple::ppc64le:
2701 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs));
2702 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples));
2703 BiarchLibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs));
2704 BiarchTripleAliases.append(begin(PPCLETriples), end(PPCLETriples));
2705 break;
2706 case llvm::Triple::riscv32:
2707 LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2708 TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
2709 BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
2710 BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
2711 break;
2712 case llvm::Triple::riscv64:
2713 LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs));
2714 TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples));
2715 BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs));
2716 BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples));
2717 break;
2718 case llvm::Triple::sparc:
2719 case llvm::Triple::sparcel:
2720 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2721 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2722 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2723 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2724 break;
2725 case llvm::Triple::sparcv9:
2726 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs));
2727 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples));
2728 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs));
2729 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples));
2730 break;
2731 case llvm::Triple::systemz:
2732 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs));
2733 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples));
2734 break;
2735 default:
2736 // By default, just rely on the standard lib directories and the original
2737 // triple.
2738 break;
2739 }
2740
2741 // Also include the multiarch variant if it's different.
2742 if (TargetTriple.str() != BiarchTriple.str())
2743 BiarchTripleAliases.push_back(BiarchTriple.str());
2744}
2745
2746bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2747 const llvm::Triple &TargetTriple, const ArgList &Args,
2748 StringRef Path, bool NeedsBiarchSuffix) {
2749 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2750 DetectedMultilibs Detected;
2751
2752 // Android standalone toolchain could have multilibs for ARM and Thumb.
2753 // Debian mips multilibs behave more like the rest of the biarch ones,
2754 // so handle them there
2755 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) {
2756 // It should also work without multilibs in a simplified toolchain.
2757 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected);
2758 } else if (TargetTriple.isCSKY()) {
2759 findCSKYMultilibs(D, TargetTriple, Path, Args, Detected);
2760 } else if (TargetTriple.isMIPS()) {
2761 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected))
2762 return false;
2763 } else if (TargetTriple.isRISCV()) {
2764 findRISCVMultilibs(D, TargetTriple, Path, Args, Detected);
2765 } else if (isMSP430(TargetArch)) {
2766 findMSP430Multilibs(D, TargetTriple, Path, Args, Detected);
2767 } else if (TargetArch == llvm::Triple::avr) {
2768 // AVR has no multilibs.
2769 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2770 NeedsBiarchSuffix, Detected)) {
2771 return false;
2772 }
2773
2774 Multilibs = Detected.Multilibs;
2775 SelectedInstallation.SelectedMultilib =
2776 Detected.SelectedMultilibs.empty() ? Multilib()
2777 : Detected.SelectedMultilibs.back();
2778 BiarchSibling = Detected.BiarchSibling;
2779
2780 return true;
2781}
2782
2783bool Generic_GCC::GCCInstallationDetector::SelectGCCInstallationDirectory(
2785 const ArgList &Args,
2786 Generic_GCC::GCCInstallCandidate &SelectedInstallation) const {
2787 if (Installations.empty())
2788 return false;
2789
2790 SelectedInstallation =
2791 *max_element(Installations, [](const auto &Max, const auto &I) {
2792 return I.Version > Max.Version;
2793 });
2794
2795 // FIXME Start selecting installation with libstdc++ in clang 22,
2796 // using the current way of selecting the installation as a fallback
2797 // only. For now, warn if the installation with libstdc++ differs
2798 // from SelectedInstallation.
2799 const GCCInstallCandidate *InstallWithIncludes = nullptr;
2800 for (const auto &I : Installations) {
2801 if ((!InstallWithIncludes || I.Version > InstallWithIncludes->Version) &&
2802 GCCInstallationHasLibStdcxxIncludePaths(I, Args))
2803 InstallWithIncludes = &I;
2804 }
2805
2806 if (InstallWithIncludes && SelectedInstallation.GCCInstallPath !=
2807 InstallWithIncludes->GCCInstallPath)
2808 D.Diag(diag::warn_drv_gcc_install_dir_libstdcxx)
2809 << InstallWithIncludes->GCCInstallPath
2810 << SelectedInstallation.GCCInstallPath;
2811
2812 // TODO Warn if SelectedInstallation does not contain libstdc++ includes
2813 // although compiler flags indicate that it is required (C++ compilation,
2814 // libstdc++ not explicitly disabled).
2815
2816 return true;
2817}
2818
2819void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2820 const llvm::Triple &TargetTriple, const ArgList &Args,
2821 const std::string &LibDir, StringRef CandidateTriple,
2822 bool NeedsBiarchSuffix, bool GCCDirExists, bool GCCCrossDirExists) {
2823 // Locations relative to the system lib directory where GCC's triple-specific
2824 // directories might reside.
2825 struct GCCLibSuffix {
2826 // Path from system lib directory to GCC triple-specific directory.
2827 std::string LibSuffix;
2828 // Path from GCC triple-specific directory back to system lib directory.
2829 // This is one '..' component per component in LibSuffix.
2830 StringRef ReversePath;
2831 // Whether this library suffix is relevant for the triple.
2832 bool Active;
2833 } Suffixes[] = {
2834 // This is the normal place.
2835 {"gcc/" + CandidateTriple.str(), "../..", GCCDirExists},
2836
2837 // Debian puts cross-compilers in gcc-cross.
2838 {"gcc-cross/" + CandidateTriple.str(), "../..", GCCCrossDirExists},
2839
2840 // The Freescale PPC SDK has the gcc libraries in
2841 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2842 // this on Freescale triples, though, since some systems put a *lot* of
2843 // files in that location, not just GCC installation data.
2844 {CandidateTriple.str(), "..",
2845 TargetTriple.getVendor() == llvm::Triple::Freescale ||
2846 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}};
2847
2849 for (auto &Suffix : Suffixes) {
2850 if (!Suffix.Active)
2851 continue;
2852
2853 StringRef LibSuffix = Suffix.LibSuffix;
2854 std::error_code EC;
2855 for (llvm::vfs::directory_iterator
2856 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC),
2857 LE;
2858 !EC && LI != LE; LI = LI.increment(EC)) {
2859 StringRef VersionText = llvm::sys::path::filename(LI->path());
2860 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2861 if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2862 if (!CandidateGCCInstallPaths.insert(std::string(LI->path())).second)
2863 continue; // Saw this path before; no need to look at it again.
2864 if (CandidateVersion.isOlderThan(4, 1, 1))
2865 continue;
2866 if (CandidateVersion <= SelectedInstallation.Version && IsValid)
2867 continue;
2868
2869 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(),
2870 NeedsBiarchSuffix))
2871 continue;
2872
2873 GCCInstallCandidate Installation;
2874 Installation.Version = CandidateVersion;
2875 Installation.GCCTriple.setTriple(CandidateTriple);
2876 // FIXME: We hack together the directory name here instead of
2877 // using LI to ensure stable path separators across Windows and
2878 // Linux.
2879 Installation.GCCInstallPath =
2880 (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2881 Installation.GCCParentLibPath =
2882 (Installation.GCCInstallPath + "/../" + Suffix.ReversePath).str();
2883 Installation.SelectedMultilib = getMultilib();
2884
2885 Installations.push_back(Installation);
2886 }
2887 }
2888
2889 IsValid |=
2890 SelectGCCInstallationDirectory(Installations, Args, SelectedInstallation);
2891}
2892
2893bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs(
2894 const llvm::Triple &TargetTriple, const ArgList &Args,
2895 const SmallVectorImpl<StringRef> &CandidateTriples,
2896 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) {
2897 if (!D.getVFS().exists(concat(D.SysRoot, GentooConfigDir)))
2898 return false;
2899
2900 for (StringRef CandidateTriple : CandidateTriples) {
2901 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
2902 return true;
2903 }
2904
2905 for (StringRef CandidateTriple : CandidateBiarchTriples) {
2906 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true))
2907 return true;
2908 }
2909 return false;
2910}
2911
2912bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2913 const llvm::Triple &TargetTriple, const ArgList &Args,
2914 StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2915 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2916 D.getVFS().getBufferForFile(concat(D.SysRoot, GentooConfigDir,
2917 "/config-" + CandidateTriple.str()));
2918 if (File) {
2920 File.get()->getBuffer().split(Lines, "\n");
2921 for (StringRef Line : Lines) {
2922 Line = Line.trim();
2923 // CURRENT=triple-version
2924 if (!Line.consume_front("CURRENT="))
2925 continue;
2926 // Process the config file pointed to by CURRENT.
2927 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile =
2928 D.getVFS().getBufferForFile(
2929 concat(D.SysRoot, GentooConfigDir, "/" + Line));
2930 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-');
2931 // List of paths to scan for libraries.
2932 SmallVector<StringRef, 4> GentooScanPaths;
2933 // Scan the Config file to find installed GCC libraries path.
2934 // Typical content of the GCC config file:
2935 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/
2936 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32"
2937 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man"
2938 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info"
2939 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4"
2940 // We are looking for the paths listed in LDPATH=... .
2941 if (ConfigFile) {
2942 SmallVector<StringRef, 2> ConfigLines;
2943 ConfigFile.get()->getBuffer().split(ConfigLines, "\n");
2944 for (StringRef ConfLine : ConfigLines) {
2945 ConfLine = ConfLine.trim();
2946 if (ConfLine.consume_front("LDPATH=")) {
2947 // Drop '"' from front and back if present.
2948 ConfLine.consume_back("\"");
2949 ConfLine.consume_front("\"");
2950 // Get all paths sperated by ':'
2951 ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false);
2952 }
2953 }
2954 }
2955 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}.
2956 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/"
2957 + ActiveVersion.second.str();
2958 GentooScanPaths.push_back(StringRef(basePath));
2959
2960 // Scan all paths for GCC libraries.
2961 for (const auto &GentooScanPath : GentooScanPaths) {
2962 std::string GentooPath = concat(D.SysRoot, GentooScanPath);
2963 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) {
2964 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath,
2965 NeedsBiarchSuffix))
2966 continue;
2967
2968 SelectedInstallation.Version =
2969 GCCVersion::Parse(ActiveVersion.second);
2970 SelectedInstallation.GCCInstallPath = GentooPath;
2971 SelectedInstallation.GCCParentLibPath =
2972 GentooPath + std::string("/../../..");
2973 SelectedInstallation.GCCTriple.setTriple(ActiveVersion.first);
2974 IsValid = true;
2975 return true;
2976 }
2977 }
2978 }
2979 }
2980
2981 return false;
2982}
2983
2984Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
2985 const ArgList &Args)
2986 : ToolChain(D, Triple, Args), GCCInstallation(D),
2987 CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args),
2988 SYCLInstallation(D, Triple, Args) {
2989 getProgramPaths().push_back(getDriver().Dir);
2990}
2991
2993
2995 switch (AC) {
2997 if (!Preprocess)
2998 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this));
2999 return Preprocess.get();
3001 if (!Compile)
3002 Compile.reset(new tools::gcc::Compiler(*this));
3003 return Compile.get();
3004 default:
3005 return ToolChain::getTool(AC);
3006 }
3007}
3008
3010 return new tools::gnutools::Assembler(*this);
3011}
3012
3013Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
3014
3015void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
3016 // Print the information about how we detected the GCC installation.
3018 CudaInstallation->print(OS);
3019 RocmInstallation->print(OS);
3020}
3021
3024 switch (getArch()) {
3025 case llvm::Triple::aarch64:
3026 case llvm::Triple::aarch64_be:
3027 case llvm::Triple::ppc:
3028 case llvm::Triple::ppcle:
3029 case llvm::Triple::ppc64:
3030 case llvm::Triple::ppc64le:
3031 case llvm::Triple::riscv32:
3032 case llvm::Triple::riscv64:
3033 case llvm::Triple::x86:
3034 case llvm::Triple::x86_64:
3036 default:
3038 }
3039}
3040
3042 switch (getArch()) {
3043 case llvm::Triple::x86_64:
3044 return getTriple().isOSWindows();
3045 case llvm::Triple::mips64:
3046 case llvm::Triple::mips64el:
3047 return true;
3048 default:
3049 return false;
3050 }
3051}
3052
3053bool Generic_GCC::isPIEDefault(const llvm::opt::ArgList &Args) const {
3054 return false;
3055}
3056
3058 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
3059}
3060
3062 switch (getTriple().getArch()) {
3063 case llvm::Triple::nvptx:
3064 case llvm::Triple::nvptx64:
3065 case llvm::Triple::xcore:
3066 return false;
3067 default:
3068 return true;
3069 }
3070}
3071
3073 // Cross-compiling binutils and GCC installations (vanilla and openSUSE at
3074 // least) put various tools in a triple-prefixed directory off of the parent
3075 // of the GCC installation. We use the GCC triple here to ensure that we end
3076 // up with tools that support the same amount of cross compiling as the
3077 // detected GCC installation. For example, if we find a GCC installation
3078 // targeting x86_64, but it is a bi-arch GCC installation, it can also be
3079 // used to target i386.
3080 if (GCCInstallation.isValid()) {
3081 PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" +
3082 GCCInstallation.getTriple().str() + "/bin")
3083 .str());
3084 }
3085}
3086
3088 const std::string &SysRoot,
3089 const std::string &OSLibDir,
3090 const std::string &MultiarchTriple,
3091 path_list &Paths) {
3092 // Add the multilib suffixed paths where they are available.
3093 if (GCCInstallation.isValid()) {
3094 assert(!SelectedMultilibs.empty());
3095 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3096 const std::string &LibPath =
3097 std::string(GCCInstallation.getParentLibPath());
3098
3099 // Sourcery CodeBench MIPS toolchain holds some libraries under
3100 // a biarch-like suffix of the GCC installation.
3101 if (const auto &PathsCallback = Multilibs.filePathsCallback())
3102 for (const auto &Path : PathsCallback(SelectedMultilibs.back()))
3103 addPathIfExists(D, GCCInstallation.getInstallPath() + Path, Paths);
3104
3105 // Add lib/gcc/$triple/$version, with an optional /multilib suffix.
3106 addPathIfExists(D,
3108 SelectedMultilibs.back().gccSuffix(),
3109 Paths);
3110
3111 // Add lib/gcc/$triple/$libdir
3112 // For GCC built with --enable-version-specific-runtime-libs.
3113 addPathIfExists(D, GCCInstallation.getInstallPath() + "/../" + OSLibDir,
3114 Paths);
3115
3116 // GCC cross compiling toolchains will install target libraries which ship
3117 // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as
3118 // any part of the GCC installation in
3119 // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat
3120 // debatable, but is the reality today. We need to search this tree even
3121 // when we have a sysroot somewhere else. It is the responsibility of
3122 // whomever is doing the cross build targeting a sysroot using a GCC
3123 // installation that is *not* within the system root to ensure two things:
3124 //
3125 // 1) Any DSOs that are linked in from this tree or from the install path
3126 // above must be present on the system root and found via an
3127 // appropriate rpath.
3128 // 2) There must not be libraries installed into
3129 // <prefix>/<triple>/<libdir> unless they should be preferred over
3130 // those within the system root.
3131 //
3132 // Note that this matches the GCC behavior. See the below comment for where
3133 // Clang diverges from GCC's behavior.
3134 addPathIfExists(D,
3135 LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir +
3136 SelectedMultilibs.back().osSuffix(),
3137 Paths);
3138
3139 // If the GCC installation we found is inside of the sysroot, we want to
3140 // prefer libraries installed in the parent prefix of the GCC installation.
3141 // It is important to *not* use these paths when the GCC installation is
3142 // outside of the system root as that can pick up unintended libraries.
3143 // This usually happens when there is an external cross compiler on the
3144 // host system, and a more minimal sysroot available that is the target of
3145 // the cross. Note that GCC does include some of these directories in some
3146 // configurations but this seems somewhere between questionable and simply
3147 // a bug.
3148 if (StringRef(LibPath).starts_with(SysRoot))
3149 addPathIfExists(D, LibPath + "/../" + OSLibDir, Paths);
3150 }
3151}
3152
3154 const std::string &SysRoot,
3155 const std::string &OSLibDir,
3156 path_list &Paths) {
3157 if (GCCInstallation.isValid()) {
3158 const std::string &LibPath =
3159 std::string(GCCInstallation.getParentLibPath());
3160 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3162 addPathIfExists(
3163 D, LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(),
3164 Paths);
3165 }
3166}
3167
3168void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs,
3169 ArgStringList &CC1Args) const {
3170 // Add include directories specific to the selected multilib set and multilib.
3171 if (!GCCInstallation.isValid())
3172 return;
3173 // gcc TOOL_INCLUDE_DIR.
3174 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3175 std::string LibPath(GCCInstallation.getParentLibPath());
3176 ToolChain::addSystemInclude(DriverArgs, CC1Args,
3177 Twine(LibPath) + "/../" + GCCTriple.str() +
3178 "/include");
3179
3180 const auto &Callback = Multilibs.includeDirsCallback();
3181 if (Callback) {
3182 for (const auto &Path : Callback(GCCInstallation.getMultilib()))
3183 addExternCSystemIncludeIfExists(DriverArgs, CC1Args,
3185 }
3186}
3187
3188void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
3189 ArgStringList &CC1Args) const {
3190 if (DriverArgs.hasArg(options::OPT_nostdinc, options::OPT_nostdincxx,
3191 options::OPT_nostdlibinc))
3192 return;
3193
3194 switch (GetCXXStdlibType(DriverArgs)) {
3196 addLibCxxIncludePaths(DriverArgs, CC1Args);
3197 break;
3198
3200 addLibStdCxxIncludePaths(DriverArgs, CC1Args);
3201 break;
3202 }
3203}
3204
3205void Generic_GCC::addSYCLIncludeArgs(const ArgList &DriverArgs,
3206 ArgStringList &CC1Args) const {
3207 SYCLInstallation->addSYCLIncludeArgs(DriverArgs, CC1Args);
3208}
3209
3210void
3211Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3212 llvm::opt::ArgStringList &CC1Args) const {
3213 const Driver &D = getDriver();
3214 std::string SysRoot = computeSysRoot();
3215 if (SysRoot.empty())
3216 SysRoot = llvm::sys::path::get_separator();
3217
3218 auto AddIncludePath = [&](StringRef Path, bool TargetDirRequired = false) {
3219 std::string Version = detectLibcxxVersion(Path);
3220 if (Version.empty())
3221 return false;
3222
3223 // First add the per-target include path if it exists.
3224 bool TargetDirExists = false;
3225 std::optional<std::string> TargetIncludeDir = getTargetSubDirPath(Path);
3226 if (TargetIncludeDir) {
3227 SmallString<128> TargetDir(*TargetIncludeDir);
3228 llvm::sys::path::append(TargetDir, "c++", Version);
3229 if (D.getVFS().exists(TargetDir)) {
3230 addSystemInclude(DriverArgs, CC1Args, TargetDir);
3231 TargetDirExists = true;
3232 }
3233 }
3234 if (TargetDirRequired && !TargetDirExists)
3235 return false;
3236
3237 // Second add the generic one.
3238 SmallString<128> GenericDir(Path);
3239 llvm::sys::path::append(GenericDir, "c++", Version);
3240 addSystemInclude(DriverArgs, CC1Args, GenericDir);
3241 return true;
3242 };
3243
3244 // Android only uses the libc++ headers installed alongside the toolchain if
3245 // they contain an Android-specific target include path, otherwise they're
3246 // incompatible with the NDK libraries.
3247 SmallString<128> DriverIncludeDir(getDriver().Dir);
3248 llvm::sys::path::append(DriverIncludeDir, "..", "include");
3249 if (AddIncludePath(DriverIncludeDir,
3250 /*TargetDirRequired=*/getTriple().isAndroid()))
3251 return;
3252 // If this is a development, non-installed, clang, libcxx will
3253 // not be found at ../include/c++ but it likely to be found at
3254 // one of the following two locations:
3255 SmallString<128> UsrLocalIncludeDir(SysRoot);
3256 llvm::sys::path::append(UsrLocalIncludeDir, "usr", "local", "include");
3257 if (AddIncludePath(UsrLocalIncludeDir))
3258 return;
3259 SmallString<128> UsrIncludeDir(SysRoot);
3260 llvm::sys::path::append(UsrIncludeDir, "usr", "include");
3261 if (AddIncludePath(UsrIncludeDir))
3262 return;
3263}
3264
3265static bool addLibStdCXXIncludePaths(llvm::vfs::FileSystem &vfs,
3266 Twine IncludeDir, StringRef Triple,
3267 Twine IncludeSuffix,
3268 const llvm::opt::ArgList &DriverArgs,
3269 llvm::opt::ArgStringList &CC1Args,
3270 bool DetectDebian = false) {
3271
3272 if (!vfs.exists(IncludeDir))
3273 return false;
3274
3275 // Debian native gcc uses g++-multiarch-incdir.diff which uses
3276 // include/x86_64-linux-gnu/c++/10$IncludeSuffix instead of
3277 // include/c++/10/x86_64-linux-gnu$IncludeSuffix.
3278 std::string Dir = IncludeDir.str();
3279 StringRef Include =
3280 llvm::sys::path::parent_path(llvm::sys::path::parent_path(Dir));
3281 std::string Path =
3282 (Include + "/" + Triple + Dir.substr(Include.size()) + IncludeSuffix)
3283 .str();
3284 if (DetectDebian && !vfs.exists(Path))
3285 return false;
3286
3287 // GPLUSPLUS_INCLUDE_DIR
3288 ToolChain::addSystemInclude(DriverArgs, CC1Args, IncludeDir);
3289 // GPLUSPLUS_TOOL_INCLUDE_DIR. If Triple is not empty, add a target-dependent
3290 // include directory.
3291 if (DetectDebian)
3292 ToolChain::addSystemInclude(DriverArgs, CC1Args, Path);
3293 else if (!Triple.empty())
3294 ToolChain::addSystemInclude(DriverArgs, CC1Args,
3295 IncludeDir + "/" + Triple + IncludeSuffix);
3296 // GPLUSPLUS_BACKWARD_INCLUDE_DIR
3297 ToolChain::addSystemInclude(DriverArgs, CC1Args, IncludeDir + "/backward");
3298 return true;
3299}
3300
3301bool Generic_GCC::addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple,
3302 Twine IncludeSuffix,
3303 const llvm::opt::ArgList &DriverArgs,
3304 llvm::opt::ArgStringList &CC1Args,
3305 bool DetectDebian) const {
3306 return ::addLibStdCXXIncludePaths(getVFS(), IncludeDir, Triple, IncludeSuffix,
3307 DriverArgs, CC1Args, DetectDebian);
3308}
3309
3311 llvm::vfs::FileSystem &vfs, const llvm::opt::ArgList &DriverArgs,
3312 llvm::opt::ArgStringList &CC1Args, StringRef DebianMultiarch) const {
3313
3314 // By default, look for the C++ headers in an include directory adjacent to
3315 // the lib directory of the GCC installation. Note that this is expect to be
3316 // equivalent to '/usr/include/c++/X.Y' in almost all cases.
3317 StringRef LibDir = getParentLibPath();
3318 StringRef InstallDir = getInstallPath();
3319 StringRef TripleStr = getTriple().str();
3320 const Multilib &Multilib = getMultilib();
3321 const GCCVersion &Version = getVersion();
3322
3323 // Try /../$triple/include/c++/$version (gcc --print-multiarch is not empty).
3325 vfs,
3326 LibDir.str() + "/../" + TripleStr + "/include/c++/" + Version.Text,
3327 TripleStr, Multilib.includeSuffix(), DriverArgs, CC1Args))
3328 return true;
3329
3330 // Try /gcc/$triple/$version/include/c++/ (gcc --print-multiarch is not
3331 // empty). Like above but for GCC built with
3332 // --enable-version-specific-runtime-libs.
3334 LibDir.str() + "/gcc/" + TripleStr + "/" +
3335 Version.Text + "/include/c++/",
3336 TripleStr, Multilib.includeSuffix(),
3337 DriverArgs, CC1Args))
3338 return true;
3339
3340 // Detect Debian g++-multiarch-incdir.diff.
3342 vfs, LibDir.str() + "/../include/c++/" + Version.Text,
3343 DebianMultiarch, Multilib.includeSuffix(), DriverArgs, CC1Args,
3344 /*Debian=*/true))
3345 return true;
3346
3347 // Try /../include/c++/$version (gcc --print-multiarch is empty).
3349 vfs, LibDir.str() + "/../include/c++/" + Version.Text, TripleStr,
3350 Multilib.includeSuffix(), DriverArgs, CC1Args))
3351 return true;
3352
3353 // Otherwise, fall back on a bunch of options which don't use multiarch
3354 // layouts for simplicity.
3355 const std::string LibStdCXXIncludePathCandidates[] = {
3356 // Gentoo is weird and places its headers inside the GCC install,
3357 // so if the first attempt to find the headers fails, try these patterns.
3358 InstallDir.str() + "/include/g++-v" + Version.Text,
3359 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." +
3361 InstallDir.str() + "/include/g++-v" + Version.MajorStr,
3362 };
3363
3364 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) {
3365 if (::addLibStdCXXIncludePaths(vfs, IncludePath, TripleStr,
3366 Multilib.includeSuffix(), DriverArgs,
3367 CC1Args))
3368 return true;
3369 }
3370 return false;
3371}
3372
3373bool Generic_GCC::GCCInstallationDetector::
3374 GCCInstallationHasLibStdcxxIncludePaths(
3376 const llvm::opt::ArgList &DriverArgs) const {
3377 StringRef DebianMultiarch =
3378 TripleToDebianMultiarch(GCCInstallation.getTriple());
3379
3380 // The following function checks for libstdc++ include paths and
3381 // adds them to the provided argument list. Here we just need the
3382 // check.
3383 llvm::opt::ArgStringList dummyCC1Args;
3384 return GCCInstallation.addGCCLibStdCxxIncludePaths(
3385 D.getVFS(), DriverArgs, dummyCC1Args, DebianMultiarch);
3386}
3387
3389 const llvm::opt::ArgList &DriverArgs,
3390 llvm::opt::ArgStringList &CC1Args) const {
3391 assert(GCCInstallation.isValid());
3392
3393 // Detect Debian g++-multiarch-incdir.diff.
3394 StringRef DebianMultiarch =
3396
3398 getVFS(), DriverArgs, CC1Args, DebianMultiarch);
3399}
3400
3401void
3402Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3403 llvm::opt::ArgStringList &CC1Args) const {
3404 if (!GCCInstallation.isValid())
3405 return;
3406
3408 getVFS(), DriverArgs, CC1Args, GCCInstallation.getTriple().str());
3409}
3410
3411llvm::opt::DerivedArgList *
3412Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args,
3413 StringRef BoundArch,
3414 Action::OffloadKind DeviceOffloadKind) const {
3415 if (DeviceOffloadKind != Action::OFK_SYCL &&
3416 DeviceOffloadKind != Action::OFK_OpenMP)
3417 return nullptr;
3418
3419 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
3420
3421 // Filter all the arguments we don't care passing to the offloading
3422 // toolchain as they can mess up with the creation of a shared library.
3423 const llvm::DenseSet<unsigned> OpenMPFiltered{
3424 options::OPT_shared, options::OPT_dynamic, options::OPT_static,
3425 options::OPT_fPIE, options::OPT_fno_PIE, options::OPT_fpie,
3426 options::OPT_fno_pie};
3427 for (auto *A : Args)
3428 if (DeviceOffloadKind != Action::OFK_OpenMP ||
3429 !OpenMPFiltered.contains(A->getOption().getID()))
3430 DAL->append(A);
3431
3432 // Request a shared library for CPU offloading. Given that these options
3433 // are decided implicitly, they do not refer to any base argument.
3434 const OptTable &Opts = getDriver().getOpts();
3435 if (DeviceOffloadKind == Action::OFK_OpenMP) {
3436 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared));
3437 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC));
3438 }
3439
3440 // Add the bound architecture to the arguments list if present.
3441 if (!BoundArch.empty()) {
3442 options::ID Opt =
3443 getTriple().isARM() || getTriple().isPPC() || getTriple().isAArch64()
3444 ? options::OPT_mcpu_EQ
3445 : options::OPT_march_EQ;
3446 DAL->eraseArg(Opt);
3447 DAL->AddJoinedArg(nullptr, Opts.getOption(Opt), BoundArch);
3448 }
3449 return DAL;
3450}
3451
3452void Generic_ELF::anchor() {}
3453
3454void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
3455 ArgStringList &CC1Args,
3456 Action::OffloadKind) const {
3457 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array,
3458 options::OPT_fno_use_init_array, true))
3459 CC1Args.push_back("-fno-use-init-array");
3460}
StringRef P
static bool findRISCVMultilibs(const Driver &D, const llvm::Triple &TargetTriple, const ArgList &Args, DetectedMultilibs &Result)
Definition: BareMetal.cpp:54
static constexpr CPUSuffix Suffixes[]
Definition: Hexagon.cpp:247
const Decl * D
IndirectLocalPath & Path
bool IsStatic
Definition: Format.cpp:3189
static void findCSKYMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, DetectedMultilibs &Result)
Definition: Gnu.cpp:1528
static void findAndroidArmMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, DetectedMultilibs &Result)
Definition: Gnu.cpp:1457
static bool findMipsCsMultilibs(const Driver &D, const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:952
static bool isArmOrThumbArch(llvm::Triple::ArchType Arch)
Definition: Gnu.cpp:930
static bool selectRISCVMultilib(const Driver &D, const MultilibSet &RISCVMultilibSet, StringRef Arch, const Multilib::flags_list &Flags, llvm::SmallVectorImpl< Multilib > &SelectedMultilibs)
Extend the multi-lib re-use selection mechanism for RISC-V.
Definition: Gnu.cpp:1604
static void normalizeCPUNamesForAssembler(const ArgList &Args, ArgStringList &CmdArgs)
Definition: Gnu.cpp:54
static bool findBiarchMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, bool NeedsBiarchSuffix, DetectedMultilibs &Result)
Definition: Gnu.cpp:1808
static bool isMips16(const ArgList &Args)
Definition: Gnu.cpp:938
static llvm::StringRef getGCCToolchainDir(const ArgList &Args, llvm::StringRef SysRoot)
Definition: Gnu.cpp:2059
static bool findMSP430Multilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, DetectedMultilibs &Result)
Definition: Gnu.cpp:1500
static bool getStatic(const ArgList &Args)
Definition: Gnu.cpp:222
static bool isMipsEL(llvm::Triple::ArchType Arch)
Definition: Gnu.cpp:934
static bool findMipsMuslMultilibs(const Driver &D, const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1057
static void findRISCVBareMetalMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const ArgList &Args, DetectedMultilibs &Result)
Definition: Gnu.cpp:1710
static bool isMSP430(llvm::Triple::ArchType Arch)
Definition: Gnu.cpp:948
static bool isSoftFloatABI(const ArgList &Args)
Definition: Gnu.cpp:919
static bool addLibStdCXXIncludePaths(llvm::vfs::FileSystem &vfs, Twine IncludeDir, StringRef Triple, Twine IncludeSuffix, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, bool DetectDebian=false)
Definition: Gnu.cpp:3265
static bool findMipsImgMultilibs(const Driver &D, const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1279
static bool forwardToGCC(const Option &O)
Definition: Gnu.cpp:44
static bool findMipsMtiMultilibs(const Driver &D, const Multilib::flags_list &Flags, FilterNonExistent &NonExistent, DetectedMultilibs &Result)
Definition: Gnu.cpp:1092
static bool isMicroMips(const ArgList &Args)
Definition: Gnu.cpp:943
OffloadArch Arch
Definition: OffloadArch.cpp:10
types::ID getType() const
Definition: Action.h:150
bool isHostOffloading(unsigned int OKind) const
Check if this action have any offload kinds.
Definition: Action.h:220
Compilation - A set of tasks to perform for a single driver invocation.
Definition: Compilation.h:45
Driver - Encapsulate logic for constructing compilation processes from a set of gcc-driver-like comma...
Definition: Driver.h:99
const llvm::opt::OptTable & getOpts() const
Definition: Driver.h:428
InputInfo - Wrapper for information about an input source.
Definition: InputInfo.h:22
const char * getFilename() const
Definition: InputInfo.h:83
bool isNothing() const
Definition: InputInfo.h:74
bool isFilename() const
Definition: InputInfo.h:75
This corresponds to a single GCC multilib, or a segment of one controlled by a command line flag.
MultilibBuilder & flag(StringRef Flag, bool Disallow=false)
Add a flag to the flags list Flag must be a flag accepted by the driver.
const std::string & gccSuffix() const
Get the detected GCC installation path suffix for the multi-arch target variant.
const std::string & osSuffix() const
Get the detected os path suffix for the multi-arch target variant.
This class can be used to create a MultilibSet, and contains helper functions to add combinations of ...
MultilibSetBuilder & Maybe(const MultilibBuilder &M)
Add an optional Multilib segment.
MultilibSetBuilder & FilterOut(const char *Regex)
Filter out those Multilibs whose gccSuffix matches the given expression.
MultilibSetBuilder & Either(const MultilibBuilder &M1, const MultilibBuilder &M2)
Add a set of mutually incompatible Multilib segments.
See also MultilibSetBuilder for combining multilibs into a set.
Definition: Multilib.h:129
bool select(const Driver &D, const Multilib::flags_list &Flags, llvm::SmallVectorImpl< Multilib > &, llvm::SmallVector< StringRef > *=nullptr) const
Select compatible variants,.
Definition: Multilib.cpp:216
MultilibSet & setFilePathsCallback(IncludeDirsFunc F)
Definition: Multilib.h:201
unsigned size() const
Definition: Multilib.h:184
MultilibSet & FilterOut(FilterCallback F)
Filter out some subset of the Multilibs using a user defined callback.
Definition: Multilib.cpp:86
const IncludeDirsFunc & filePathsCallback() const
Definition: Multilib.h:206
const IncludeDirsFunc & includeDirsCallback() const
Definition: Multilib.h:199
MultilibSet & setIncludeDirsCallback(IncludeDirsFunc F)
Definition: Multilib.h:194
This corresponds to a single GCC Multilib, or a segment of one controlled by a command line flag.
Definition: Multilib.h:35
const std::string & gccSuffix() const
Get the detected GCC installation path suffix for the multi-arch target variant.
Definition: Multilib.h:70
const std::string & osSuffix() const
Get the detected os path suffix for the multi-arch target variant.
Definition: Multilib.h:74
std::vector< std::string > flags_list
Definition: Multilib.h:37
const std::string & includeSuffix() const
Get the include directory suffix.
Definition: Multilib.h:78
bool isDefault() const
Check whether the default is selected.
Definition: Multilib.h:92
ToolChain - Access to tools for a single platform.
Definition: ToolChain.h:92
static void addSystemInclude(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, const Twine &Path)
Utility function to add a system include directory to CC1 arguments.
Definition: ToolChain.cpp:1436
virtual std::string computeSysRoot() const
Return the sysroot, possibly searching for a default sysroot using target-specific logic.
Definition: ToolChain.cpp:1292
virtual RuntimeLibType GetRuntimeLibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:1318
bool ShouldLinkCXXStdlib(const llvm::opt::ArgList &Args) const
Returns if the C++ standard library should be linked in.
Definition: ToolChain.cpp:1525
virtual void addFortranRuntimeLibraryPath(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Adds the path for the Fortran runtime libraries to CmdArgs.
Definition: ToolChain.cpp:857
std::string GetFilePath(const char *Name) const
Definition: ToolChain.cpp:1090
virtual void addFortranRuntimeLibs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
Adds Fortran runtime libraries to CmdArgs.
Definition: ToolChain.cpp:821
llvm::Triple::ArchType getArch() const
Definition: ToolChain.h:269
const Driver & getDriver() const
Definition: ToolChain.h:253
virtual std::string detectLibcxxVersion(StringRef IncludePath) const
Definition: ToolChain.cpp:1470
llvm::vfs::FileSystem & getVFS() const
Definition: ToolChain.cpp:115
virtual std::string getCompilerRT(const llvm::opt::ArgList &Args, StringRef Component, FileType Type=ToolChain::FT_Static, bool IsFortran=false) const
Definition: ToolChain.cpp:784
virtual bool isPIEDefault(const llvm::opt::ArgList &Args) const =0
Test whether this toolchain defaults to PIE.
bool addFastMathRuntimeIfAvailable(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddFastMathRuntimeIfAvailable - If a runtime library exists that sets global flags for unsafe floatin...
Definition: ToolChain.cpp:1598
path_list & getProgramPaths()
Definition: ToolChain.h:298
static void addExternCSystemIncludeIfExists(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, const Twine &Path)
Definition: ToolChain.cpp:1428
virtual void AddCXXStdlibLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddCXXStdlibLibArgs - Add the system specific linker arguments to use for the given C++ standard libr...
Definition: ToolChain.cpp:1531
const llvm::Triple & getTriple() const
Definition: ToolChain.h:255
std::optional< std::string > getTargetSubDirPath(StringRef BaseDir) const
Find the target-specific subdirectory for the current target triple under BaseDir,...
Definition: ToolChain.cpp:954
std::string GetLinkerPath(bool *LinkerIsLLD=nullptr) const
Returns the linker path, respecting the -fuse-ld= argument to determine the linker suffix or name.
Definition: ToolChain.cpp:1098
void AddFilePathLibArgs(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs) const
AddFilePathLibArgs - Add each thing in getFilePaths() as a "-L" option.
Definition: ToolChain.cpp:1550
std::string getTripleString() const
Definition: ToolChain.h:278
virtual CXXStdlibType GetCXXStdlibType(const llvm::opt::ArgList &Args) const
Definition: ToolChain.cpp:1380
llvm::SmallVector< Multilib > SelectedMultilibs
Definition: ToolChain.h:200
virtual Tool * getTool(Action::ActionClass AC) const
Definition: ToolChain.cpp:633
Tool - Information on a specific compilation tool.
Definition: Tool.h:32
const ToolChain & getToolChain() const
Definition: Tool.h:52
void addClangTargetOptions(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, Action::OffloadKind DeviceOffloadKind) const override
Add options that need to be passed to cc1 for this target.
Definition: Gnu.cpp:3454
void print(raw_ostream &OS) const
Print information about the detected GCC installation.
Definition: Gnu.cpp:2223
const Multilib & getMultilib() const
Get the detected Multilib.
Definition: Gnu.h:289
const GCCInstallCandidate & getSelectedInstallation() const
Definition: Gnu.h:269
std::function< StringRef(const llvm::Triple &)> TripleToDebianMultiarch
Function for converting a triple to a Debian multiarch.
Definition: Gnu.h:251
const llvm::Triple & getTriple() const
Get the GCC triple for the detected install.
Definition: Gnu.h:274
bool isValid() const
Check whether we detected a valid GCC install.
Definition: Gnu.h:267
bool getBiarchSibling(Multilib &M) const
Get the biarch sibling multilib (if it exists).
Definition: Gnu.cpp:2240
void init(const llvm::Triple &TargetTriple, const llvm::opt::ArgList &Args)
Initialize a GCCInstallationDetector from the driver.
Definition: Gnu.cpp:2083
StringRef getParentLibPath() const
Get the detected GCC parent lib path.
Definition: Gnu.h:284
StringRef getInstallPath() const
Get the detected GCC installation path.
Definition: Gnu.h:279
llvm::opt::DerivedArgList * TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef BoundArch, Action::OffloadKind DeviceOffloadKind) const override
TranslateArgs - Create a new derived argument list for any argument translations this ToolChain may w...
Definition: Gnu.cpp:3412
void AddMultilibPaths(const Driver &D, const std::string &SysRoot, const std::string &OSLibDir, const std::string &MultiarchTriple, path_list &Paths)
Definition: Gnu.cpp:3087
LazyDetector< CudaInstallationDetector > CudaInstallation
Definition: Gnu.h:358
void PushPPaths(ToolChain::path_list &PPaths)
Definition: Gnu.cpp:3072
Tool * getTool(Action::ActionClass AC) const override
Definition: Gnu.cpp:2994
Generic_GCC(const Driver &D, const llvm::Triple &Triple, const llvm::opt::ArgList &Args)
Definition: Gnu.cpp:2984
GCCInstallationDetector GCCInstallation
Definition: Gnu.h:357
LazyDetector< SYCLInstallationDetector > SYCLInstallation
Definition: Gnu.h:360
void AddMultilibIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Gnu.cpp:3168
bool IsIntegratedAssemblerDefault() const override
IsIntegratedAssemblerDefault - Does this tool chain enable -integrated-as by default.
Definition: Gnu.cpp:3061
void AddClangCXXStdlibIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
AddClangCXXStdlibIncludeArgs - Add the clang -cc1 level arguments to set the include paths to use for...
Definition: Gnu.cpp:3188
Tool * buildLinker() const override
Definition: Gnu.cpp:3013
bool isPICDefaultForced() const override
Tests whether this toolchain forces its default for PIC, PIE or non-PIC.
Definition: Gnu.cpp:3057
bool isPIEDefault(const llvm::opt::ArgList &Args) const override
Test whether this toolchain defaults to PIE.
Definition: Gnu.cpp:3053
void printVerboseInfo(raw_ostream &OS) const override
Dispatch to the specific toolchain for verbose printing.
Definition: Gnu.cpp:3015
void addSYCLIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override
Add arguments to use system-specific SYCL includes.
Definition: Gnu.cpp:3205
void AddMultiarchPaths(const Driver &D, const std::string &SysRoot, const std::string &OSLibDir, path_list &Paths)
Definition: Gnu.cpp:3153
Tool * buildAssembler() const override
Definition: Gnu.cpp:3009
UnwindTableLevel getDefaultUnwindTableLevel(const llvm::opt::ArgList &Args) const override
How detailed should the unwind tables be by default.
Definition: Gnu.cpp:3023
bool addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple, Twine IncludeSuffix, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, bool DetectDebian=false) const
Definition: Gnu.cpp:3301
bool isPICDefault() const override
Test whether this toolchain defaults to PIC.
Definition: Gnu.cpp:3041
bool addGCCLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC) const
Definition: Gnu.cpp:3388
virtual void addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Gnu.cpp:3211
LazyDetector< RocmInstallationDetector > RocmInstallation
Definition: Gnu.h:359
virtual void addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const
Definition: Gnu.cpp:3402
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs,...
Definition: Gnu.cpp:67
virtual void RenderExtraToolArgs(const JobAction &JA, llvm::opt::ArgStringList &CmdArgs) const =0
RenderExtraToolArgs - Render any arguments necessary to force the particular tool mode.
void RenderExtraToolArgs(const JobAction &JA, llvm::opt::ArgStringList &CmdArgs) const override
RenderExtraToolArgs - Render any arguments necessary to force the particular tool mode.
Definition: Gnu.cpp:189
void RenderExtraToolArgs(const JobAction &JA, llvm::opt::ArgStringList &CmdArgs) const override
RenderExtraToolArgs - Render any arguments necessary to force the particular tool mode.
Definition: Gnu.cpp:217
void RenderExtraToolArgs(const JobAction &JA, llvm::opt::ArgStringList &CmdArgs) const override
RenderExtraToolArgs - Render any arguments necessary to force the particular tool mode.
Definition: Gnu.cpp:184
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs,...
Definition: Gnu.cpp:590
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs,...
Definition: Gnu.cpp:271
void ConstructJob(Compilation &C, const JobAction &JA, const InputInfo &Output, const InputInfoList &Inputs, const llvm::opt::ArgList &TCArgs, const char *LinkingOutput) const override
ConstructJob - Construct jobs to perform the action JA, writing to Output and with Inputs,...
Definition: Gnu.cpp:227
void appendBE8LinkFlag(const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const llvm::Triple &Triple)
FloatABI getARMFloatABI(const ToolChain &TC, const llvm::opt::ArgList &Args)
bool isARMBigEndian(const llvm::Triple &Triple, const llvm::opt::ArgList &Args)
FloatABI getCSKYFloatABI(const Driver &D, const llvm::opt::ArgList &Args)
std::optional< llvm::StringRef > getCSKYArchName(const Driver &D, const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
StringRef getLoongArchABI(const Driver &D, const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
StringRef getGnuCompatibleMipsABIName(StringRef ABI)
Definition: Mips.cpp:138
bool isNaN2008(const Driver &D, const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
mips::FloatABI getMipsFloatABI(const Driver &D, const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
bool shouldUseFPXX(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef CPUName, StringRef ABIName, mips::FloatABI FloatABI)
bool isUCLibc(const llvm::opt::ArgList &Args)
void getMipsCPUAndABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple, StringRef &CPUName, StringRef &ABIName)
const char * getPPCAsmModeForCPU(StringRef Name)
Definition: PPC.cpp:22
std::string getRISCVArch(const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
Definition: RISCV.cpp:246
StringRef getRISCVABI(const llvm::opt::ArgList &Args, const llvm::Triple &Triple)
const char * getSparcAsmModeForCPU(llvm::StringRef Name, const llvm::Triple &Triple)
std::string getSystemZTargetCPU(const llvm::opt::ArgList &Args, const llvm::Triple &T)
const char * SplitDebugName(const JobAction &JA, const llvm::opt::ArgList &Args, const InputInfo &Input, const InputInfo &Output)
bool getStaticPIE(const llvm::opt::ArgList &Args, const ToolChain &TC)
std::string getCPUName(const Driver &D, const llvm::opt::ArgList &Args, const llvm::Triple &T, bool FromAs=false)
void addHIPRuntimeLibArgs(const ToolChain &TC, Compilation &C, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
void addLTOOptions(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const InputInfo &Output, const InputInfoList &Inputs, bool IsThinLTO)
void addMultilibFlag(bool Enabled, const StringRef Flag, Multilib::flags_list &Flags)
Flag must be a flag accepted by the driver.
void linkXRayRuntimeDeps(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
void AddRunTimeLibs(const ToolChain &TC, const Driver &D, llvm::opt::ArgStringList &CmdArgs, const llvm::opt::ArgList &Args)
void SplitDebugInfo(const ToolChain &TC, Compilation &C, const Tool &T, const JobAction &JA, const llvm::opt::ArgList &Args, const InputInfo &Output, const char *OutFile)
void linkSanitizerRuntimeDeps(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
bool addSanitizerRuntimes(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
bool addXRayRuntime(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
void AddAssemblerKPIC(const ToolChain &ToolChain, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
void addPathIfExists(const Driver &D, const Twine &Path, ToolChain::path_list &Paths)
Definition: CommonArgs.cpp:354
void addLinkerCompressDebugSectionsOption(const ToolChain &TC, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs)
Definition: CommonArgs.cpp:626
bool addOpenMPRuntime(const Compilation &C, llvm::opt::ArgStringList &CmdArgs, const ToolChain &TC, const llvm::opt::ArgList &Args, bool ForceStaticHostRuntime=false, bool IsOffloadingHost=false, bool GompNeedsRT=false)
Returns true, if an OpenMP runtime has been added.
std::tuple< llvm::Reloc::Model, unsigned, bool > ParsePICArgs(const ToolChain &ToolChain, const llvm::opt::ArgList &Args)
void claimNoWarnArgs(const llvm::opt::ArgList &Args)
void AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs, const llvm::opt::ArgList &Args, llvm::opt::ArgStringList &CmdArgs, const JobAction &JA)
unsigned getDwarfVersion(const ToolChain &TC, const llvm::opt::ArgList &Args)
const char * getLDMOption(const llvm::Triple &T, const llvm::opt::ArgList &Args)
bool isLLVMIR(ID Id)
Is this LLVM IR.
Definition: Types.cpp:266
const char * getTypeName(ID Id)
getTypeName - Return the name of the type for Id.
Definition: Types.cpp:49
bool canTypeBeUserSpecified(ID Id)
canTypeBeUserSpecified - Can this type be specified on the command line (by the type name); this is u...
Definition: Types.cpp:102
bool findMIPSMultilibs(const Driver &D, const llvm::Triple &TargetTriple, StringRef Path, const llvm::opt::ArgList &Args, DetectedMultilibs &Result)
The JSON file list parser is used to communicate input to InstallAPI.
@ Result
The result type of a method or function.
MultilibSet Multilibs
The set of multilibs that the detected installation supports.
Definition: Gnu.h:25
std::optional< Multilib > BiarchSibling
On Biarch systems, this corresponds to the default multilib when targeting the non-default multilib.
Definition: Gnu.h:32
llvm::SmallVector< Multilib > SelectedMultilibs
The multilibs appropriate for the given flags.
Definition: Gnu.h:28
static constexpr ResponseFileSupport AtFileCurCP()
Definition: Job.h:92
const llvm::Triple & getTriple() const
Get the GCC triple for the detected install.
Definition: Gnu.h:200
StringRef getInstallPath() const
Get the detected GCC installation path.
Definition: Gnu.h:203
StringRef getParentLibPath() const
Get the detected GCC parent lib path.
Definition: Gnu.h:206
const Multilib & getMultilib() const
Get the detected Multilib.
Definition: Gnu.h:209
bool addGCCLibStdCxxIncludePaths(llvm::vfs::FileSystem &vfs, const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, StringRef DebianMultiarch) const
Definition: Gnu.cpp:3310
const GCCVersion & getVersion() const
Get the detected GCC version string.
Definition: Gnu.h:212
Struct to store and manipulate GCC versions.
Definition: Gnu.h:163
std::string MajorStr
The text of the parsed major, and major+minor versions.
Definition: Gnu.h:171
bool isOlderThan(int RHSMajor, int RHSMinor, int RHSPatch, StringRef RHSPatchSuffix=StringRef()) const
Generic_GCC - A tool chain using the 'gcc' command to perform all subcommands; this relies on gcc tra...
Definition: Gnu.cpp:1941
std::string PatchSuffix
Any textual suffix on the patch number.
Definition: Gnu.h:174
int Major
The parsed major, minor, and patch numbers.
Definition: Gnu.h:168
std::string Text
The unparsed text of the version.
Definition: Gnu.h:165
static GCCVersion Parse(StringRef VersionText)
Parse a GCCVersion object out of a string of text.
Definition: Gnu.cpp:1985