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
19#include "clang/Driver/CommonArgs.h"
20#include "clang/Driver/Compilation.h"
21#include "clang/Driver/Driver.h"
22#include "clang/Driver/MultilibBuilder.h"
23#include "clang/Driver/Tool.h"
24#include "clang/Driver/ToolChain.h"
25#include "clang/Options/Options.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
41using tools::addMultilibFlag;
42using tools::addPathIfExists;
43
44static bool forwardToGCC(const Option &O) {
45 // LinkerInput options have been forwarded. Don't duplicate.
46 if (O.hasFlag(Val: options::LinkerInput))
47 return false;
48 return O.matches(ID: options::OPT_Link_Group) || O.hasFlag(Val: 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(Ids: options::OPT_mcpu_EQ)) {
57 StringRef CPUArg(A->getValue());
58 if (CPUArg.equals_insensitive(RHS: "krait"))
59 CmdArgs.push_back(Elt: "-mcpu=cortex-a15");
60 else if (CPUArg.equals_insensitive(RHS: "kryo"))
61 CmdArgs.push_back(Elt: "-mcpu=cortex-a57");
62 else
63 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mcpu_EQ);
64 }
65}
66
67void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA,
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(O: 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, Output&: 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(Elt: "-arch");
92 CmdArgs.push_back(
93 Elt: Args.MakeArgString(Str: 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(Elt: "-m32");
108 break;
109 case llvm::Triple::x86_64:
110 case llvm::Triple::ppc64:
111 case llvm::Triple::ppc64le:
112 CmdArgs.push_back(Elt: "-m64");
113 break;
114 case llvm::Triple::sparcel:
115 CmdArgs.push_back(Elt: "-EL");
116 break;
117 }
118
119 assert((Output.isFilename() || Output.isNothing()) && "Invalid output.");
120 if (Output.isFilename()) {
121 CmdArgs.push_back(Elt: "-o");
122 CmdArgs.push_back(Elt: Output.getFilename());
123 } else {
124 CmdArgs.push_back(Elt: "-fsyntax-only");
125 }
126
127 Args.AddAllArgValues(Output&: CmdArgs, Id0: options::OPT_Wa_COMMA, Id1: 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(Id: II.getType()))
140 D.Diag(DiagID: clang::diag::err_drv_no_linker_llvm_support)
141 << getToolChain().getTripleString();
142 else if (II.getType() == types::TY_AST)
143 D.Diag(DiagID: diag::err_drv_no_ast_support) << getToolChain().getTripleString();
144 else if (II.getType() == types::TY_ModuleFile)
145 D.Diag(DiagID: diag::err_drv_no_module_support)
146 << getToolChain().getTripleString();
147
148 if (types::canTypeBeUserSpecified(Id: II.getType())) {
149 CmdArgs.push_back(Elt: "-x");
150 CmdArgs.push_back(Elt: types::getTypeName(Id: II.getType()));
151 }
152
153 if (II.isFilename())
154 CmdArgs.push_back(Elt: II.getFilename());
155 else {
156 const Arg &A = II.getInputArg();
157
158 // Reverse translate some rewritten options.
159 if (A.getOption().matches(ID: options::OPT_Z_reserved_lib_stdcxx)) {
160 CmdArgs.push_back(Elt: "-lstdc++");
161 continue;
162 }
163
164 // Don't render as input, we need gcc to do the translations.
165 A.render(Args, Output&: 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(Str: getToolChain().GetProgramPath(Name: GCCName));
179 C.addCommand(Cmd: std::make_unique<Command>(args: JA, args: *this,
180 args: ResponseFileSupport::AtFileCurCP(),
181 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
182}
183
184void tools::gcc::Preprocessor::RenderExtraToolArgs(
185 const JobAction &JA, ArgStringList &CmdArgs) const {
186 CmdArgs.push_back(Elt: "-E");
187}
188
189void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA,
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(Elt: "-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(Elt: "-c");
205 break;
206 case types::TY_PP_Asm:
207 CmdArgs.push_back(Elt: "-S");
208 break;
209 case types::TY_Nothing:
210 CmdArgs.push_back(Elt: "-fsyntax-only");
211 break;
212 default:
213 D.Diag(DiagID: diag::err_drv_invalid_gcc_output_type) << getTypeName(Id: JA.getType());
214 }
215}
216
217void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA,
218 ArgStringList &CmdArgs) const {
219 // The types are (hopefully) good enough.
220}
221
222static bool getStatic(const ArgList &Args) {
223 return Args.hasArg(Ids: options::OPT_static) &&
224 !Args.hasArg(Ids: options::OPT_static_pie);
225}
226
227void tools::gnutools::StaticLibTool::ConstructJob(
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(Id0: options::OPT_g_Group);
235 // and "clang -emit-llvm foo.o -o foo"
236 Args.ClaimAllArgs(Id0: 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(Id0: options::OPT_w);
240 // Silence warnings when linking C code with a C++ '-stdlib' argument.
241 Args.ClaimAllArgs(Id0: 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(Elt: "rcsD");
247 Args.AddAllArgValues(Output&: CmdArgs, Id0: options::OPT_Xstatic_lib_tool);
248 CmdArgs.push_back(Elt: Output.getFilename());
249
250 for (const auto &II : Inputs) {
251 if (II.isFilename()) {
252 CmdArgs.push_back(Elt: II.getFilename());
253 }
254 }
255
256 // Delete old output archive file if it already exists before generating a new
257 // archive file.
258 auto OutputFileName = Output.getFilename();
259 if (Output.isFilename() && llvm::sys::fs::exists(Path: OutputFileName)) {
260 if (std::error_code EC = llvm::sys::fs::remove(path: OutputFileName)) {
261 D.Diag(DiagID: diag::err_drv_unable_to_remove_file) << EC.message();
262 return;
263 }
264 }
265
266 const char *Exec = Args.MakeArgString(Str: getToolChain().GetStaticLibToolPath());
267 C.addCommand(Cmd: std::make_unique<Command>(args: JA, args: *this,
268 args: ResponseFileSupport::AtFileCurCP(),
269 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
270}
271
272void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
273 const InputInfo &Output,
274 const InputInfoList &Inputs,
275 const ArgList &Args,
276 const char *LinkingOutput) const {
277 // FIXME: The Linker class constructor takes a ToolChain and not a
278 // Generic_ELF, so the static_cast might return a reference to a invalid
279 // instance (see PR45061). Ideally, the Linker constructor needs to take a
280 // Generic_ELF instead.
281 const auto &ToolChain = static_cast<const Generic_ELF &>(getToolChain());
282 const Driver &D = ToolChain.getDriver();
283
284 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
285
286 const llvm::Triple::ArchType Arch = ToolChain.getArch();
287 const bool isOHOSFamily = ToolChain.getTriple().isOHOSFamily();
288 const bool isAndroid = ToolChain.getTriple().isAndroid();
289 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
290 const bool IsVE = ToolChain.getTriple().isVE();
291 const bool IsStaticPIE = getStaticPIE(Args, TC: ToolChain);
292 const bool IsStatic = getStatic(Args);
293 const bool HasCRTBeginEndFiles =
294 ToolChain.getTriple().hasEnvironment() ||
295 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
296
297 ArgStringList CmdArgs;
298
299 // Silence warning for "clang -g foo.o -o foo"
300 Args.ClaimAllArgs(Id0: options::OPT_g_Group);
301 // and "clang -emit-llvm foo.o -o foo"
302 Args.ClaimAllArgs(Id0: options::OPT_emit_llvm);
303 // and for "clang -w foo.o -o foo". Other warning options are already
304 // handled somewhere else.
305 Args.ClaimAllArgs(Id0: options::OPT_w);
306
307 if (!D.SysRoot.empty())
308 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "--sysroot=" + D.SysRoot));
309
310 if (Triple.isARM() || Triple.isThumb()) {
311 bool IsBigEndian = arm::isARMBigEndian(Triple, Args);
312 if (IsBigEndian)
313 arm::appendBE8LinkFlag(Args, CmdArgs, Triple);
314 CmdArgs.push_back(Elt: IsBigEndian ? "-EB" : "-EL");
315 } else if (Triple.isAArch64()) {
316 CmdArgs.push_back(Elt: Arch == llvm::Triple::aarch64_be ? "-EB" : "-EL");
317 }
318
319 // Most Android ARM64 targets should enable the linker fix for erratum
320 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
321 if (Arch == llvm::Triple::aarch64 && (isAndroid || isOHOSFamily) &&
322 Args.hasFlag(Pos: options::OPT_mfix_cortex_a53_843419,
323 Neg: options::OPT_mno_fix_cortex_a53_843419, Default: true)) {
324 std::string CPU = getCPUName(D, Args, T: Triple);
325 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
326 CmdArgs.push_back(Elt: "--fix-cortex-a53-843419");
327 }
328
329 ToolChain.addExtraOpts(CmdArgs);
330
331 CmdArgs.push_back(Elt: "--eh-frame-hdr");
332
333 if (const char *LDMOption = getLDMOption(T: ToolChain.getTriple(), Args)) {
334 CmdArgs.push_back(Elt: "-m");
335 CmdArgs.push_back(Elt: LDMOption);
336 } else {
337 D.Diag(DiagID: diag::err_target_unknown_triple) << Triple.str();
338 return;
339 }
340
341 if (Triple.isLoongArch() || Triple.isRISCV()) {
342 CmdArgs.push_back(Elt: "-X");
343 if (Args.hasArg(Ids: options::OPT_mno_relax))
344 CmdArgs.push_back(Elt: "--no-relax");
345 }
346
347 const bool IsShared = Args.hasArg(Ids: options::OPT_shared);
348 if (IsShared)
349 CmdArgs.push_back(Elt: "-shared");
350 bool IsPIE = false;
351 if (IsStaticPIE) {
352 CmdArgs.push_back(Elt: "-static");
353 CmdArgs.push_back(Elt: "-pie");
354 CmdArgs.push_back(Elt: "--no-dynamic-linker");
355 CmdArgs.push_back(Elt: "-z");
356 CmdArgs.push_back(Elt: "text");
357 } else if (IsStatic) {
358 CmdArgs.push_back(Elt: "-static");
359 } else if (!Args.hasArg(Ids: options::OPT_r)) {
360 if (Args.hasArg(Ids: options::OPT_rdynamic))
361 CmdArgs.push_back(Elt: "-export-dynamic");
362 if (!IsShared) {
363 IsPIE = Args.hasFlag(Pos: options::OPT_pie, Neg: options::OPT_no_pie,
364 Default: ToolChain.isPIEDefault(Args));
365 if (IsPIE)
366 CmdArgs.push_back(Elt: "-pie");
367 CmdArgs.push_back(Elt: "-dynamic-linker");
368 CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine(D.DyldPrefix) +
369 ToolChain.getDynamicLinker(Args)));
370 }
371 }
372
373 CmdArgs.push_back(Elt: "-o");
374 CmdArgs.push_back(Elt: Output.getFilename());
375
376 Args.addAllArgs(Output&: CmdArgs, Ids: {options::OPT_s, options::OPT_t, options::OPT_u});
377
378 if (!Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nostartfiles,
379 Ids: options::OPT_r)) {
380 if (!isAndroid && !IsIAMCU) {
381 const char *crt1 = nullptr;
382 if (!Args.hasArg(Ids: options::OPT_shared)) {
383 if (Args.hasArg(Ids: 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(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: crt1)));
394
395 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crti.o")));
396 }
397
398 if (IsVE) {
399 CmdArgs.push_back(Elt: "-z");
400 CmdArgs.push_back(Elt: "max-page-size=0x4000000");
401 }
402
403 if (IsIAMCU)
404 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crt0.o")));
405 else if (HasCRTBeginEndFiles) {
406 std::string P;
407 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
408 !isAndroid) {
409 std::string crtbegin = ToolChain.getCompilerRT(Args, Component: "crtbegin",
410 Type: ToolChain::FT_Object);
411 if (ToolChain.getVFS().exists(Path: crtbegin))
412 P = crtbegin;
413 }
414 if (P.empty()) {
415 const char *crtbegin;
416 if (Args.hasArg(Ids: 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(Name: crtbegin);
425 }
426 CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
427 }
428
429 // Add crtfastmath.o if available and fast math is enabled.
430 ToolChain.addFastMathRuntimeIfAvailable(Args, CmdArgs);
431
432 if (isAndroid && Args.hasFlag(Pos: options::OPT_fandroid_pad_segment,
433 Neg: options::OPT_fno_android_pad_segment, Default: false))
434 CmdArgs.push_back(
435 Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crt_pad_segment.o")));
436 }
437
438 Args.addAllArgs(Output&: CmdArgs, Ids: {options::OPT_L});
439
440 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
441
442 if (auto LTO = ToolChain.getLTOMode(Args); LTO != LTOK_None)
443 addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs, IsThinLTO: LTO == LTOK_Thin);
444
445 if (Args.hasArg(Ids: options::OPT_Z_Xlinker__no_demangle))
446 CmdArgs.push_back(Elt: "--no-demangle");
447
448 bool NeedsSanitizerDeps = addSanitizerRuntimes(TC: ToolChain, Args, CmdArgs);
449 bool NeedsXRayDeps = addXRayRuntime(TC: ToolChain, Args, CmdArgs);
450 addLinkerCompressDebugSectionsOption(TC: ToolChain, Args, CmdArgs);
451 AddLinkerInputs(TC: ToolChain, Inputs, Args, CmdArgs, JA);
452
453 ToolChain.addOffloadRTLibs(ActiveKinds: C.getActiveOffloadKinds(), Args, CmdArgs);
454
455 // The profile runtime also needs access to system libraries.
456 getToolChain().addProfileRTLibs(Args, CmdArgs);
457
458 if (D.CCCIsCXX() &&
459 !Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nodefaultlibs,
460 Ids: options::OPT_r)) {
461 if (ToolChain.ShouldLinkCXXStdlib(Args)) {
462 bool OnlyLibstdcxxStatic = Args.hasArg(Ids: options::OPT_static_libstdcxx) &&
463 !Args.hasArg(Ids: options::OPT_static);
464 if (OnlyLibstdcxxStatic)
465 CmdArgs.push_back(Elt: "-Bstatic");
466 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
467 if (OnlyLibstdcxxStatic)
468 CmdArgs.push_back(Elt: "-Bdynamic");
469 }
470 CmdArgs.push_back(Elt: "-lm");
471 }
472
473 // Silence warnings when linking C code with a C++ '-stdlib' argument.
474 Args.ClaimAllArgs(Id0: options::OPT_stdlib_EQ);
475
476 // Additional linker set-up and flags for Fortran. This is required in order
477 // to generate executables. As Fortran runtime depends on the C runtime,
478 // these dependencies need to be listed before the C runtime below (i.e.
479 // AddRunTimeLibs).
480 if (D.IsFlangMode() &&
481 !Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nodefaultlibs)) {
482 ToolChain.addFortranRuntimeLibraryPath(Args, CmdArgs);
483 ToolChain.addFortranRuntimeLibs(Args, CmdArgs);
484 CmdArgs.push_back(Elt: "-lm");
485 }
486
487 if (!Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_r)) {
488 if (!Args.hasArg(Ids: options::OPT_nodefaultlibs)) {
489 if (IsStatic || IsStaticPIE)
490 CmdArgs.push_back(Elt: "--start-group");
491
492 if (NeedsSanitizerDeps)
493 linkSanitizerRuntimeDeps(TC: ToolChain, Args, CmdArgs);
494
495 if (NeedsXRayDeps)
496 linkXRayRuntimeDeps(TC: ToolChain, Args, CmdArgs);
497
498 bool WantPthread = Args.hasArg(Ids: options::OPT_pthread) ||
499 Args.hasArg(Ids: options::OPT_pthreads);
500
501 // Use the static OpenMP runtime with -static-openmp
502 bool StaticOpenMP = Args.hasArg(Ids: options::OPT_static_openmp) &&
503 !Args.hasArg(Ids: options::OPT_static);
504
505 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
506 // require librt. Most modern Linux platforms do, but some may not.
507 if (addOpenMPRuntime(C, CmdArgs, TC: ToolChain, Args, ForceStaticHostRuntime: StaticOpenMP,
508 IsOffloadingHost: JA.isHostOffloading(OKind: Action::OFK_OpenMP),
509 /* GompNeedsRT= */ true))
510 // OpenMP runtimes implies pthreads when using the GNU toolchain.
511 // FIXME: Does this really make sense for all GNU toolchains?
512 WantPthread = true;
513
514 addLLVMOffloadingRuntime(C, CmdArgs, TC: ToolChain, Args);
515 AddRunTimeLibs(TC: 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(Elt: "--push-state");
522 CmdArgs.push_back(Elt: "--as-needed");
523 CmdArgs.push_back(Elt: "-latomic");
524 CmdArgs.push_back(Elt: "--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(Elt: "-lpthread");
531
532 if (Args.hasArg(Ids: options::OPT_fsplit_stack))
533 CmdArgs.push_back(Elt: "--wrap=pthread_create");
534
535 if (!Args.hasArg(Ids: options::OPT_nolibc))
536 CmdArgs.push_back(Elt: "-lc");
537
538 // Add IAMCU specific libs, if needed.
539 if (IsIAMCU)
540 CmdArgs.push_back(Elt: "-lgloss");
541
542 if (IsStatic || IsStaticPIE)
543 CmdArgs.push_back(Elt: "--end-group");
544 else
545 AddRunTimeLibs(TC: ToolChain, D, CmdArgs, Args);
546
547 // Add IAMCU specific libs (outside the group), if needed.
548 if (IsIAMCU) {
549 CmdArgs.push_back(Elt: "--as-needed");
550 CmdArgs.push_back(Elt: "-lsoftfp");
551 CmdArgs.push_back(Elt: "--no-as-needed");
552 }
553 }
554
555 if (!Args.hasArg(Ids: options::OPT_nostartfiles) && !IsIAMCU) {
556 if (HasCRTBeginEndFiles) {
557 std::string P;
558 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
559 !isAndroid) {
560 std::string crtend = ToolChain.getCompilerRT(Args, Component: "crtend",
561 Type: ToolChain::FT_Object);
562 if (ToolChain.getVFS().exists(Path: crtend))
563 P = crtend;
564 }
565 if (P.empty()) {
566 const char *crtend;
567 if (Args.hasArg(Ids: 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(Name: crtend);
574 }
575 CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
576 }
577 if (!isAndroid)
578 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crtn.o")));
579 }
580 }
581
582 // Emit -T after -L paths so that INPUT()/GROUP() directives in the linker
583 // script resolve against the user-supplied and toolchain search paths in GNU
584 // ld.
585 Args.addAllArgs(Output&: CmdArgs, Ids: {options::OPT_T});
586
587 const char *Exec = Args.MakeArgString(Str: ToolChain.GetLinkerPath());
588 C.addCommand(Cmd: std::make_unique<Command>(args: JA, args: *this,
589 args: ResponseFileSupport::AtFileCurCP(),
590 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
591}
592
593void tools::gnutools::Assembler::ConstructJob(Compilation &C,
594 const JobAction &JA,
595 const InputInfo &Output,
596 const InputInfoList &Inputs,
597 const ArgList &Args,
598 const char *LinkingOutput) const {
599 const auto &D = getToolChain().getDriver();
600
601 claimNoWarnArgs(Args);
602
603 ArgStringList CmdArgs;
604
605 llvm::Reloc::Model RelocationModel;
606 unsigned PICLevel;
607 bool IsPIE;
608 const char *DefaultAssembler = "as";
609 // Enforce GNU as on Solaris; the native assembler's input syntax isn't fully
610 // compatible.
611 if (getToolChain().getTriple().isOSSolaris())
612 DefaultAssembler = "gas";
613 std::tie(args&: RelocationModel, args&: PICLevel, args&: IsPIE) =
614 ParsePICArgs(ToolChain: getToolChain(), Args);
615
616 if (const Arg *A = Args.getLastArg(Ids: options::OPT_gz, Ids: options::OPT_gz_EQ)) {
617 if (A->getOption().getID() == options::OPT_gz) {
618 CmdArgs.push_back(Elt: "--compress-debug-sections");
619 } else {
620 StringRef Value = A->getValue();
621 if (Value == "none" || Value == "zlib" || Value == "zstd") {
622 CmdArgs.push_back(
623 Elt: Args.MakeArgString(Str: "--compress-debug-sections=" + Twine(Value)));
624 } else {
625 D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
626 << A->getSpelling() << Value;
627 }
628 }
629 }
630
631 switch (getToolChain().getArch()) {
632 default:
633 break;
634 // Add --32/--64 to make sure we get the format we want.
635 // This is incomplete
636 case llvm::Triple::x86:
637 CmdArgs.push_back(Elt: "--32");
638 break;
639 case llvm::Triple::x86_64:
640 if (getToolChain().getTriple().isX32())
641 CmdArgs.push_back(Elt: "--x32");
642 else
643 CmdArgs.push_back(Elt: "--64");
644 break;
645 case llvm::Triple::ppc: {
646 CmdArgs.push_back(Elt: "-a32");
647 CmdArgs.push_back(Elt: "-mppc");
648 CmdArgs.push_back(Elt: "-mbig-endian");
649 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
650 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
651 break;
652 }
653 case llvm::Triple::ppcle: {
654 CmdArgs.push_back(Elt: "-a32");
655 CmdArgs.push_back(Elt: "-mppc");
656 CmdArgs.push_back(Elt: "-mlittle-endian");
657 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
658 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
659 break;
660 }
661 case llvm::Triple::ppc64: {
662 CmdArgs.push_back(Elt: "-a64");
663 CmdArgs.push_back(Elt: "-mppc64");
664 CmdArgs.push_back(Elt: "-mbig-endian");
665 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
666 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
667 break;
668 }
669 case llvm::Triple::ppc64le: {
670 CmdArgs.push_back(Elt: "-a64");
671 CmdArgs.push_back(Elt: "-mppc64");
672 CmdArgs.push_back(Elt: "-mlittle-endian");
673 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
674 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
675 break;
676 }
677 case llvm::Triple::riscv32:
678 case llvm::Triple::riscv64:
679 case llvm::Triple::riscv32be:
680 case llvm::Triple::riscv64be: {
681 StringRef ABIName = riscv::getRISCVABI(Args, Triple: getToolChain().getTriple());
682 CmdArgs.push_back(Elt: "-mabi");
683 CmdArgs.push_back(Elt: ABIName.data());
684 std::string MArchName =
685 riscv::getRISCVArch(Args, Triple: getToolChain().getTriple());
686 CmdArgs.push_back(Elt: "-march");
687 CmdArgs.push_back(Elt: Args.MakeArgString(Str: MArchName));
688 if (!Args.hasFlag(Pos: options::OPT_mrelax, Neg: options::OPT_mno_relax, Default: true))
689 Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_mrelax, Neg: options::OPT_mno_relax);
690 break;
691 }
692 case llvm::Triple::sparc:
693 case llvm::Triple::sparcel: {
694 CmdArgs.push_back(Elt: "-32");
695 std::string CPU = getCPUName(D, Args, T: getToolChain().getTriple());
696 CmdArgs.push_back(
697 Elt: sparc::getSparcAsmModeForCPU(Name: CPU, Triple: getToolChain().getTriple()));
698 AddAssemblerKPIC(ToolChain: getToolChain(), Args, CmdArgs);
699 break;
700 }
701 case llvm::Triple::sparcv9: {
702 CmdArgs.push_back(Elt: "-64");
703 std::string CPU = getCPUName(D, Args, T: getToolChain().getTriple());
704 CmdArgs.push_back(
705 Elt: sparc::getSparcAsmModeForCPU(Name: CPU, Triple: getToolChain().getTriple()));
706 AddAssemblerKPIC(ToolChain: getToolChain(), Args, CmdArgs);
707 break;
708 }
709 case llvm::Triple::arm:
710 case llvm::Triple::armeb:
711 case llvm::Triple::thumb:
712 case llvm::Triple::thumbeb: {
713 const llvm::Triple &Triple2 = getToolChain().getTriple();
714 CmdArgs.push_back(Elt: arm::isARMBigEndian(Triple: Triple2, Args) ? "-EB" : "-EL");
715 switch (Triple2.getSubArch()) {
716 case llvm::Triple::ARMSubArch_v7:
717 CmdArgs.push_back(Elt: "-mfpu=neon");
718 break;
719 case llvm::Triple::ARMSubArch_v8:
720 CmdArgs.push_back(Elt: "-mfpu=crypto-neon-fp-armv8");
721 break;
722 default:
723 break;
724 }
725
726 switch (arm::getARMFloatABI(TC: getToolChain(), Args)) {
727 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
728 case arm::FloatABI::Soft:
729 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mfloat-abi=soft"));
730 break;
731 case arm::FloatABI::SoftFP:
732 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mfloat-abi=softfp"));
733 break;
734 case arm::FloatABI::Hard:
735 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mfloat-abi=hard"));
736 break;
737 }
738
739 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_march_EQ);
740 normalizeCPUNamesForAssembler(Args, CmdArgs);
741
742 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mfpu_EQ);
743 // The integrated assembler doesn't implement e_flags setting behavior for
744 // -meabi=gnu (gcc -mabi={apcs-gnu,atpcs} passes -meabi=gnu to gas). For
745 // compatibility we accept but warn.
746 if (Arg *A = Args.getLastArgNoClaim(Ids: options::OPT_mabi_EQ))
747 A->ignoreTargetSpecific();
748 break;
749 }
750 case llvm::Triple::aarch64:
751 case llvm::Triple::aarch64_be: {
752 CmdArgs.push_back(
753 Elt: getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL");
754 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_march_EQ);
755 normalizeCPUNamesForAssembler(Args, CmdArgs);
756
757 break;
758 }
759 case llvm::Triple::loongarch32: {
760 StringRef ABIName =
761 loongarch::getLoongArchABI(D, Args, Triple: getToolChain().getTriple());
762 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mabi=" + ABIName));
763 break;
764 }
765 case llvm::Triple::loongarch64: {
766 StringRef ABIName =
767 loongarch::getLoongArchABI(D, Args, Triple: getToolChain().getTriple());
768 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mabi=" + ABIName));
769 break;
770 }
771 case llvm::Triple::mips:
772 case llvm::Triple::mipsel:
773 case llvm::Triple::mips64:
774 case llvm::Triple::mips64el: {
775 StringRef CPUName;
776 StringRef ABIName;
777 mips::getMipsCPUAndABI(Args, Triple: getToolChain().getTriple(), CPUName, ABIName);
778 ABIName = mips::getGnuCompatibleMipsABIName(ABI: ABIName);
779
780 CmdArgs.push_back(Elt: "-march");
781 CmdArgs.push_back(Elt: CPUName.data());
782
783 CmdArgs.push_back(Elt: "-mabi");
784 CmdArgs.push_back(Elt: ABIName.data());
785
786 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
787 // or -mshared (not implemented) is in effect.
788 if (RelocationModel == llvm::Reloc::Static)
789 CmdArgs.push_back(Elt: "-mno-shared");
790
791 // LLVM doesn't support -mplt yet and acts as if it is always given.
792 // However, -mplt has no effect with the N64 ABI.
793 if (ABIName != "64" && !Args.hasArg(Ids: options::OPT_mno_abicalls))
794 CmdArgs.push_back(Elt: "-call_nonpic");
795
796 if (getToolChain().getTriple().isLittleEndian())
797 CmdArgs.push_back(Elt: "-EL");
798 else
799 CmdArgs.push_back(Elt: "-EB");
800
801 if (Arg *A = Args.getLastArg(Ids: options::OPT_mnan_EQ)) {
802 if (StringRef(A->getValue()) == "2008")
803 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mnan=2008"));
804 }
805
806 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
807 if (Arg *A = Args.getLastArg(Ids: options::OPT_mfp32, Ids: options::OPT_mfpxx,
808 Ids: options::OPT_mfp64)) {
809 A->claim();
810 A->render(Args, Output&: CmdArgs);
811 } else if (mips::shouldUseFPXX(
812 Args, Triple: getToolChain().getTriple(), CPUName, ABIName,
813 FloatABI: mips::getMipsFloatABI(D: getToolChain().getDriver(), Args,
814 Triple: getToolChain().getTriple())))
815 CmdArgs.push_back(Elt: "-mfpxx");
816
817 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
818 // -mno-mips16 is actually -no-mips16.
819 if (Arg *A =
820 Args.getLastArg(Ids: options::OPT_mips16, Ids: options::OPT_mno_mips16)) {
821 if (A->getOption().matches(ID: options::OPT_mips16)) {
822 A->claim();
823 A->render(Args, Output&: CmdArgs);
824 } else {
825 A->claim();
826 CmdArgs.push_back(Elt: "-no-mips16");
827 }
828 }
829
830 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mmicromips,
831 Ids: options::OPT_mno_micromips);
832 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mdsp, Ids: options::OPT_mno_dsp);
833 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mdspr2, Ids: options::OPT_mno_dspr2);
834
835 if (Arg *A = Args.getLastArg(Ids: options::OPT_mmsa, Ids: options::OPT_mno_msa)) {
836 // Do not use AddLastArg because not all versions of MIPS assembler
837 // support -mmsa / -mno-msa options.
838 if (A->getOption().matches(ID: options::OPT_mmsa))
839 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mmsa"));
840 }
841
842 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mhard_float,
843 Ids: options::OPT_msoft_float);
844
845 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mdouble_float,
846 Ids: options::OPT_msingle_float);
847
848 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_modd_spreg,
849 Ids: options::OPT_mno_odd_spreg);
850
851 AddAssemblerKPIC(ToolChain: getToolChain(), Args, CmdArgs);
852 break;
853 }
854 case llvm::Triple::systemz: {
855 // Always pass an -march option, since our default of z10 is later
856 // than the GNU assembler's default.
857 std::string CPUName =
858 systemz::getSystemZTargetCPU(Args, T: getToolChain().getTriple());
859 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-march=" + CPUName));
860 break;
861 }
862 case llvm::Triple::ve:
863 DefaultAssembler = "nas";
864 }
865
866 for (const Arg *A : Args.filtered(Ids: options::OPT_ffile_prefix_map_EQ,
867 Ids: options::OPT_fdebug_prefix_map_EQ)) {
868 StringRef Map = A->getValue();
869 if (!Map.contains(C: '='))
870 D.Diag(DiagID: diag::err_drv_invalid_argument_to_option)
871 << Map << A->getOption().getName();
872 else {
873 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "--debug-prefix-map"));
874 CmdArgs.push_back(Elt: Args.MakeArgString(Str: Map));
875 }
876 A->claim();
877 }
878
879 Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_I);
880 Args.AddAllArgValues(Output&: CmdArgs, Id0: options::OPT_Wa_COMMA, Id1: options::OPT_Xassembler);
881
882 CmdArgs.push_back(Elt: "-o");
883 CmdArgs.push_back(Elt: Output.getFilename());
884
885 for (const auto &II : Inputs)
886 CmdArgs.push_back(Elt: II.getFilename());
887
888 if (Arg *A = Args.getLastArg(Ids: options::OPT_g_Flag, Ids: options::OPT_gN_Group,
889 Ids: options::OPT_gdwarf_2, Ids: options::OPT_gdwarf_3,
890 Ids: options::OPT_gdwarf_4, Ids: options::OPT_gdwarf_5,
891 Ids: options::OPT_gdwarf))
892 if (!A->getOption().matches(ID: options::OPT_g0)) {
893 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_g_Flag);
894
895 unsigned DwarfVersion = getDwarfVersion(TC: getToolChain(), Args);
896 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-gdwarf-" + Twine(DwarfVersion)));
897 }
898
899 const char *Exec =
900 Args.MakeArgString(Str: getToolChain().GetProgramPath(Name: DefaultAssembler));
901 C.addCommand(Cmd: std::make_unique<Command>(args: JA, args: *this,
902 args: ResponseFileSupport::AtFileCurCP(),
903 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
904
905 // Handle the debug info splitting at object creation time if we're
906 // creating an object.
907 // TODO: Currently only works on linux with newer objcopy.
908 if (Args.hasArg(Ids: options::OPT_gsplit_dwarf) &&
909 getToolChain().getTriple().isOSLinux())
910 SplitDebugInfo(TC: getToolChain(), C, T: *this, JA, Args, Output,
911 OutFile: SplitDebugName(JA, Args, Input: Inputs[0], Output));
912}
913
914namespace {
915// Filter to remove Multilibs that don't exist as a suffix to Path
916class FilterNonExistent {
917 StringRef Base, File;
918 llvm::vfs::FileSystem &VFS;
919
920public:
921 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS)
922 : Base(Base), File(File), VFS(VFS) {}
923 bool operator()(const Multilib &M) {
924 return !VFS.exists(Path: Base + M.gccSuffix() + File);
925 }
926};
927} // end anonymous namespace
928
929static bool isSoftFloatABI(const ArgList &Args) {
930 Arg *A = Args.getLastArg(Ids: options::OPT_msoft_float, Ids: options::OPT_mhard_float,
931 Ids: options::OPT_mfloat_abi_EQ);
932 if (!A)
933 return false;
934
935 return A->getOption().matches(ID: options::OPT_msoft_float) ||
936 (A->getOption().matches(ID: options::OPT_mfloat_abi_EQ) &&
937 A->getValue() == StringRef("soft"));
938}
939
940static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
941 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
942}
943
944static bool isMipsEL(llvm::Triple::ArchType Arch) {
945 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
946}
947
948static bool isMips16(const ArgList &Args) {
949 Arg *A = Args.getLastArg(Ids: options::OPT_mips16, Ids: options::OPT_mno_mips16);
950 return A && A->getOption().matches(ID: options::OPT_mips16);
951}
952
953static bool isMicroMips(const ArgList &Args) {
954 Arg *A = Args.getLastArg(Ids: options::OPT_mmicromips, Ids: options::OPT_mno_micromips);
955 return A && A->getOption().matches(ID: options::OPT_mmicromips);
956}
957
958static bool isMSP430(llvm::Triple::ArchType Arch) {
959 return Arch == llvm::Triple::msp430;
960}
961
962static bool findMipsCsMultilibs(const Driver &D,
963 const Multilib::flags_list &Flags,
964 FilterNonExistent &NonExistent,
965 DetectedMultilibs &Result) {
966 // Check for Code Sourcery toolchain multilibs
967 MultilibSet CSMipsMultilibs;
968 {
969 auto MArchMips16 = MultilibBuilder("/mips16").flag(Flag: "-m32").flag(Flag: "-mips16");
970
971 auto MArchMicroMips =
972 MultilibBuilder("/micromips").flag(Flag: "-m32").flag(Flag: "-mmicromips");
973
974 auto MArchDefault = MultilibBuilder("")
975 .flag(Flag: "-mips16", /*Disallow=*/true)
976 .flag(Flag: "-mmicromips", /*Disallow=*/true);
977
978 auto UCLibc = MultilibBuilder("/uclibc").flag(Flag: "-muclibc");
979
980 auto SoftFloat = MultilibBuilder("/soft-float").flag(Flag: "-msoft-float");
981
982 auto Nan2008 = MultilibBuilder("/nan2008").flag(Flag: "-mnan=2008");
983
984 auto DefaultFloat = MultilibBuilder("")
985 .flag(Flag: "-msoft-float", /*Disallow=*/true)
986 .flag(Flag: "-mnan=2008", /*Disallow=*/true);
987
988 auto BigEndian =
989 MultilibBuilder("").flag(Flag: "-EB").flag(Flag: "-EL", /*Disallow=*/true);
990
991 auto LittleEndian =
992 MultilibBuilder("/el").flag(Flag: "-EL").flag(Flag: "-EB", /*Disallow=*/true);
993
994 // Note that this one's osSuffix is ""
995 auto MAbi64 = MultilibBuilder("")
996 .gccSuffix(S: "/64")
997 .includeSuffix(S: "/64")
998 .flag(Flag: "-mabi=n64")
999 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1000 .flag(Flag: "-m32", /*Disallow=*/true);
1001
1002 CSMipsMultilibs =
1003 MultilibSetBuilder()
1004 .Either(M1: MArchMips16, M2: MArchMicroMips, M3: MArchDefault)
1005 .Maybe(M: UCLibc)
1006 .Either(M1: SoftFloat, M2: Nan2008, M3: DefaultFloat)
1007 .FilterOut(Regex: "/micromips/nan2008")
1008 .FilterOut(Regex: "/mips16/nan2008")
1009 .Either(M1: BigEndian, M2: LittleEndian)
1010 .Maybe(M: MAbi64)
1011 .FilterOut(Regex: "/mips16.*/64")
1012 .FilterOut(Regex: "/micromips.*/64")
1013 .makeMultilibSet()
1014 .FilterOut(F: NonExistent)
1015 .setIncludeDirsCallback([](const Multilib &M) {
1016 std::vector<std::string> Dirs({"/include"});
1017 if (StringRef(M.includeSuffix()).starts_with(Prefix: "/uclibc"))
1018 Dirs.push_back(
1019 x: "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
1020 else
1021 Dirs.push_back(x: "/../../../../mips-linux-gnu/libc/usr/include");
1022 return Dirs;
1023 });
1024 }
1025
1026 MultilibSet DebianMipsMultilibs;
1027 {
1028 MultilibBuilder MAbiN32 =
1029 MultilibBuilder().gccSuffix(S: "/n32").includeSuffix(S: "/n32").flag(
1030 Flag: "-mabi=n32");
1031
1032 MultilibBuilder M64 = MultilibBuilder()
1033 .gccSuffix(S: "/64")
1034 .includeSuffix(S: "/64")
1035 .flag(Flag: "-m64")
1036 .flag(Flag: "-m32", /*Disallow=*/true)
1037 .flag(Flag: "-mabi=n32", /*Disallow=*/true);
1038
1039 MultilibBuilder M32 = MultilibBuilder()
1040 .gccSuffix(S: "/32")
1041 .flag(Flag: "-m64", /*Disallow=*/true)
1042 .flag(Flag: "-m32")
1043 .flag(Flag: "-mabi=n32", /*Disallow=*/true);
1044
1045 DebianMipsMultilibs = MultilibSetBuilder()
1046 .Either(M1: M32, M2: M64, M3: MAbiN32)
1047 .makeMultilibSet()
1048 .FilterOut(F: NonExistent);
1049 }
1050
1051 // Sort candidates. Toolchain that best meets the directories tree goes first.
1052 // Then select the first toolchains matches command line flags.
1053 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
1054 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
1055 std::iter_swap(a: Candidates, b: Candidates + 1);
1056 for (const MultilibSet *Candidate : Candidates) {
1057 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1058 if (Candidate == &DebianMipsMultilibs)
1059 Result.BiarchSibling = Multilib();
1060 Result.Multilibs = *Candidate;
1061 return true;
1062 }
1063 }
1064 return false;
1065}
1066
1067static bool findMipsMuslMultilibs(const Driver &D,
1068 const Multilib::flags_list &Flags,
1069 FilterNonExistent &NonExistent,
1070 DetectedMultilibs &Result) {
1071 // Musl toolchain multilibs
1072 MultilibSet MuslMipsMultilibs;
1073 {
1074 auto MArchMipsR2 = MultilibBuilder("")
1075 .osSuffix(S: "/mips-r2-hard-musl")
1076 .flag(Flag: "-EB")
1077 .flag(Flag: "-EL", /*Disallow=*/true)
1078 .flag(Flag: "-march=mips32r2");
1079
1080 auto MArchMipselR2 = MultilibBuilder("/mipsel-r2-hard-musl")
1081 .flag(Flag: "-EB", /*Disallow=*/true)
1082 .flag(Flag: "-EL")
1083 .flag(Flag: "-march=mips32r2");
1084
1085 MuslMipsMultilibs = MultilibSetBuilder()
1086 .Either(M1: MArchMipsR2, M2: MArchMipselR2)
1087 .makeMultilibSet();
1088
1089 // Specify the callback that computes the include directories.
1090 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1091 return std::vector<std::string>(
1092 {"/../sysroot" + M.osSuffix() + "/usr/include"});
1093 });
1094 }
1095 if (MuslMipsMultilibs.select(D, Flags, Result.SelectedMultilibs)) {
1096 Result.Multilibs = std::move(MuslMipsMultilibs);
1097 return true;
1098 }
1099 return false;
1100}
1101
1102static bool findMipsMtiMultilibs(const Driver &D,
1103 const Multilib::flags_list &Flags,
1104 FilterNonExistent &NonExistent,
1105 DetectedMultilibs &Result) {
1106 // CodeScape MTI toolchain v1.2 and early.
1107 MultilibSet MtiMipsMultilibsV1;
1108 {
1109 auto MArchMips32 = MultilibBuilder("/mips32")
1110 .flag(Flag: "-m32")
1111 .flag(Flag: "-m64", /*Disallow=*/true)
1112 .flag(Flag: "-mmicromips", /*Disallow=*/true)
1113 .flag(Flag: "-march=mips32");
1114
1115 auto MArchMicroMips = MultilibBuilder("/micromips")
1116 .flag(Flag: "-m32")
1117 .flag(Flag: "-m64", /*Disallow=*/true)
1118 .flag(Flag: "-mmicromips");
1119
1120 auto MArchMips64r2 = MultilibBuilder("/mips64r2")
1121 .flag(Flag: "-m32", /*Disallow=*/true)
1122 .flag(Flag: "-m64")
1123 .flag(Flag: "-march=mips64r2");
1124
1125 auto MArchMips64 = MultilibBuilder("/mips64")
1126 .flag(Flag: "-m32", /*Disallow=*/true)
1127 .flag(Flag: "-m64")
1128 .flag(Flag: "-march=mips64r2", /*Disallow=*/true);
1129
1130 auto MArchDefault = MultilibBuilder("")
1131 .flag(Flag: "-m32")
1132 .flag(Flag: "-m64", /*Disallow=*/true)
1133 .flag(Flag: "-mmicromips", /*Disallow=*/true)
1134 .flag(Flag: "-march=mips32r2");
1135
1136 auto Mips16 = MultilibBuilder("/mips16").flag(Flag: "-mips16");
1137
1138 auto UCLibc = MultilibBuilder("/uclibc").flag(Flag: "-muclibc");
1139
1140 auto MAbi64 = MultilibBuilder("/64")
1141 .flag(Flag: "-mabi=n64")
1142 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1143 .flag(Flag: "-m32", /*Disallow=*/true);
1144
1145 auto BigEndian =
1146 MultilibBuilder("").flag(Flag: "-EB").flag(Flag: "-EL", /*Disallow=*/true);
1147
1148 auto LittleEndian =
1149 MultilibBuilder("/el").flag(Flag: "-EL").flag(Flag: "-EB", /*Disallow=*/true);
1150
1151 auto SoftFloat = MultilibBuilder("/sof").flag(Flag: "-msoft-float");
1152
1153 auto Nan2008 = MultilibBuilder("/nan2008").flag(Flag: "-mnan=2008");
1154
1155 MtiMipsMultilibsV1 =
1156 MultilibSetBuilder()
1157 .Either(M1: MArchMips32, M2: MArchMicroMips, M3: MArchMips64r2, M4: MArchMips64,
1158 M5: MArchDefault)
1159 .Maybe(M: UCLibc)
1160 .Maybe(M: Mips16)
1161 .FilterOut(Regex: "/mips64/mips16")
1162 .FilterOut(Regex: "/mips64r2/mips16")
1163 .FilterOut(Regex: "/micromips/mips16")
1164 .Maybe(M: MAbi64)
1165 .FilterOut(Regex: "/micromips/64")
1166 .FilterOut(Regex: "/mips32/64")
1167 .FilterOut(Regex: "^/64")
1168 .FilterOut(Regex: "/mips16/64")
1169 .Either(M1: BigEndian, M2: LittleEndian)
1170 .Maybe(M: SoftFloat)
1171 .Maybe(M: Nan2008)
1172 .FilterOut(Regex: ".*sof/nan2008")
1173 .makeMultilibSet()
1174 .FilterOut(F: NonExistent)
1175 .setIncludeDirsCallback([](const Multilib &M) {
1176 std::vector<std::string> Dirs({"/include"});
1177 if (StringRef(M.includeSuffix()).starts_with(Prefix: "/uclibc"))
1178 Dirs.push_back(x: "/../../../../sysroot/uclibc/usr/include");
1179 else
1180 Dirs.push_back(x: "/../../../../sysroot/usr/include");
1181 return Dirs;
1182 });
1183 }
1184
1185 // CodeScape IMG toolchain starting from v1.3.
1186 MultilibSet MtiMipsMultilibsV2;
1187 {
1188 auto BeHard = MultilibBuilder("/mips-r2-hard")
1189 .flag(Flag: "-EB")
1190 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1191 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1192 .flag(Flag: "-muclibc", /*Disallow=*/true);
1193 auto BeSoft = MultilibBuilder("/mips-r2-soft")
1194 .flag(Flag: "-EB")
1195 .flag(Flag: "-msoft-float")
1196 .flag(Flag: "-mnan=2008", /*Disallow=*/true);
1197 auto ElHard = MultilibBuilder("/mipsel-r2-hard")
1198 .flag(Flag: "-EL")
1199 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1200 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1201 .flag(Flag: "-muclibc", /*Disallow=*/true);
1202 auto ElSoft = MultilibBuilder("/mipsel-r2-soft")
1203 .flag(Flag: "-EL")
1204 .flag(Flag: "-msoft-float")
1205 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1206 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1207 auto BeHardNan = MultilibBuilder("/mips-r2-hard-nan2008")
1208 .flag(Flag: "-EB")
1209 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1210 .flag(Flag: "-mnan=2008")
1211 .flag(Flag: "-muclibc", /*Disallow=*/true);
1212 auto ElHardNan = MultilibBuilder("/mipsel-r2-hard-nan2008")
1213 .flag(Flag: "-EL")
1214 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1215 .flag(Flag: "-mnan=2008")
1216 .flag(Flag: "-muclibc", /*Disallow=*/true)
1217 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1218 auto BeHardNanUclibc = MultilibBuilder("/mips-r2-hard-nan2008-uclibc")
1219 .flag(Flag: "-EB")
1220 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1221 .flag(Flag: "-mnan=2008")
1222 .flag(Flag: "-muclibc");
1223 auto ElHardNanUclibc = MultilibBuilder("/mipsel-r2-hard-nan2008-uclibc")
1224 .flag(Flag: "-EL")
1225 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1226 .flag(Flag: "-mnan=2008")
1227 .flag(Flag: "-muclibc");
1228 auto BeHardUclibc = MultilibBuilder("/mips-r2-hard-uclibc")
1229 .flag(Flag: "-EB")
1230 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1231 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1232 .flag(Flag: "-muclibc");
1233 auto ElHardUclibc = MultilibBuilder("/mipsel-r2-hard-uclibc")
1234 .flag(Flag: "-EL")
1235 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1236 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1237 .flag(Flag: "-muclibc");
1238 auto ElMicroHardNan = MultilibBuilder("/micromipsel-r2-hard-nan2008")
1239 .flag(Flag: "-EL")
1240 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1241 .flag(Flag: "-mnan=2008")
1242 .flag(Flag: "-mmicromips");
1243 auto ElMicroSoft = MultilibBuilder("/micromipsel-r2-soft")
1244 .flag(Flag: "-EL")
1245 .flag(Flag: "-msoft-float")
1246 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1247 .flag(Flag: "-mmicromips");
1248
1249 auto O32 = MultilibBuilder("/lib")
1250 .osSuffix(S: "")
1251 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1252 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1253 auto N32 = MultilibBuilder("/lib32")
1254 .osSuffix(S: "")
1255 .flag(Flag: "-mabi=n32")
1256 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1257 auto N64 = MultilibBuilder("/lib64")
1258 .osSuffix(S: "")
1259 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1260 .flag(Flag: "-mabi=n64");
1261
1262 MtiMipsMultilibsV2 =
1263 MultilibSetBuilder()
1264 .Either(Ms: {BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1265 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1266 ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1267 .Either(M1: O32, M2: N32, M3: N64)
1268 .makeMultilibSet()
1269 .FilterOut(F: NonExistent)
1270 .setIncludeDirsCallback([](const Multilib &M) {
1271 return std::vector<std::string>({"/../../../../sysroot" +
1272 M.includeSuffix() +
1273 "/../usr/include"});
1274 })
1275 .setFilePathsCallback([](const Multilib &M) {
1276 return std::vector<std::string>(
1277 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1278 });
1279 }
1280 for (auto *Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1281 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1282 Result.Multilibs = *Candidate;
1283 return true;
1284 }
1285 }
1286 return false;
1287}
1288
1289static bool findMipsImgMultilibs(const Driver &D,
1290 const Multilib::flags_list &Flags,
1291 FilterNonExistent &NonExistent,
1292 DetectedMultilibs &Result) {
1293 // CodeScape IMG toolchain v1.2 and early.
1294 MultilibSet ImgMultilibsV1;
1295 {
1296 auto Mips64r6 = MultilibBuilder("/mips64r6")
1297 .flag(Flag: "-m64")
1298 .flag(Flag: "-m32", /*Disallow=*/true);
1299
1300 auto LittleEndian =
1301 MultilibBuilder("/el").flag(Flag: "-EL").flag(Flag: "-EB", /*Disallow=*/true);
1302
1303 auto MAbi64 = MultilibBuilder("/64")
1304 .flag(Flag: "-mabi=n64")
1305 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1306 .flag(Flag: "-m32", /*Disallow=*/true);
1307
1308 ImgMultilibsV1 =
1309 MultilibSetBuilder()
1310 .Maybe(M: Mips64r6)
1311 .Maybe(M: MAbi64)
1312 .Maybe(M: LittleEndian)
1313 .makeMultilibSet()
1314 .FilterOut(F: NonExistent)
1315 .setIncludeDirsCallback([](const Multilib &M) {
1316 return std::vector<std::string>(
1317 {"/include", "/../../../../sysroot/usr/include"});
1318 });
1319 }
1320
1321 // CodeScape IMG toolchain starting from v1.3.
1322 MultilibSet ImgMultilibsV2;
1323 {
1324 auto BeHard = MultilibBuilder("/mips-r6-hard")
1325 .flag(Flag: "-EB")
1326 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1327 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1328 auto BeSoft = MultilibBuilder("/mips-r6-soft")
1329 .flag(Flag: "-EB")
1330 .flag(Flag: "-msoft-float")
1331 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1332 auto ElHard = MultilibBuilder("/mipsel-r6-hard")
1333 .flag(Flag: "-EL")
1334 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1335 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1336 auto ElSoft = MultilibBuilder("/mipsel-r6-soft")
1337 .flag(Flag: "-EL")
1338 .flag(Flag: "-msoft-float")
1339 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1340 auto BeMicroHard = MultilibBuilder("/micromips-r6-hard")
1341 .flag(Flag: "-EB")
1342 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1343 .flag(Flag: "-mmicromips");
1344 auto BeMicroSoft = MultilibBuilder("/micromips-r6-soft")
1345 .flag(Flag: "-EB")
1346 .flag(Flag: "-msoft-float")
1347 .flag(Flag: "-mmicromips");
1348 auto ElMicroHard = MultilibBuilder("/micromipsel-r6-hard")
1349 .flag(Flag: "-EL")
1350 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1351 .flag(Flag: "-mmicromips");
1352 auto ElMicroSoft = MultilibBuilder("/micromipsel-r6-soft")
1353 .flag(Flag: "-EL")
1354 .flag(Flag: "-msoft-float")
1355 .flag(Flag: "-mmicromips");
1356
1357 auto O32 = MultilibBuilder("/lib")
1358 .osSuffix(S: "")
1359 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1360 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1361 auto N32 = MultilibBuilder("/lib32")
1362 .osSuffix(S: "")
1363 .flag(Flag: "-mabi=n32")
1364 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1365 auto N64 = MultilibBuilder("/lib64")
1366 .osSuffix(S: "")
1367 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1368 .flag(Flag: "-mabi=n64");
1369
1370 ImgMultilibsV2 =
1371 MultilibSetBuilder()
1372 .Either(Ms: {BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1373 ElMicroHard, ElMicroSoft})
1374 .Either(M1: O32, M2: N32, M3: N64)
1375 .makeMultilibSet()
1376 .FilterOut(F: NonExistent)
1377 .setIncludeDirsCallback([](const Multilib &M) {
1378 return std::vector<std::string>({"/../../../../sysroot" +
1379 M.includeSuffix() +
1380 "/../usr/include"});
1381 })
1382 .setFilePathsCallback([](const Multilib &M) {
1383 return std::vector<std::string>(
1384 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1385 });
1386 }
1387 for (auto *Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1388 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1389 Result.Multilibs = *Candidate;
1390 return true;
1391 }
1392 }
1393 return false;
1394}
1395
1396bool clang::driver::findMIPSMultilibs(const Driver &D,
1397 const llvm::Triple &TargetTriple,
1398 StringRef Path, const ArgList &Args,
1399 DetectedMultilibs &Result) {
1400 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1401
1402 StringRef CPUName;
1403 StringRef ABIName;
1404 tools::mips::getMipsCPUAndABI(Args, Triple: TargetTriple, CPUName, ABIName);
1405
1406 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1407
1408 Multilib::flags_list Flags;
1409 addMultilibFlag(Enabled: TargetTriple.isMIPS32(), Flag: "-m32", Flags);
1410 addMultilibFlag(Enabled: TargetTriple.isMIPS64(), Flag: "-m64", Flags);
1411 addMultilibFlag(Enabled: isMips16(Args), Flag: "-mips16", Flags);
1412 addMultilibFlag(Enabled: CPUName == "mips32", Flag: "-march=mips32", Flags);
1413 addMultilibFlag(Enabled: CPUName == "mips32r2" || CPUName == "mips32r3" ||
1414 CPUName == "mips32r5" || CPUName == "p5600",
1415 Flag: "-march=mips32r2", Flags);
1416 addMultilibFlag(Enabled: CPUName == "mips32r6", Flag: "-march=mips32r6", Flags);
1417 addMultilibFlag(Enabled: CPUName == "mips64", Flag: "-march=mips64", Flags);
1418 addMultilibFlag(Enabled: CPUName == "mips64r2" || CPUName == "mips64r3" ||
1419 CPUName == "mips64r5" || CPUName == "octeon" ||
1420 CPUName == "octeon+",
1421 Flag: "-march=mips64r2", Flags);
1422 addMultilibFlag(Enabled: CPUName == "mips64r6" || CPUName == "i6400" ||
1423 CPUName == "i6500",
1424 Flag: "-march=mips64r6", Flags);
1425 addMultilibFlag(Enabled: isMicroMips(Args), Flag: "-mmicromips", Flags);
1426 addMultilibFlag(Enabled: tools::mips::isUCLibc(Args), Flag: "-muclibc", Flags);
1427 addMultilibFlag(Enabled: tools::mips::isNaN2008(D, Args, Triple: TargetTriple), Flag: "-mnan=2008",
1428 Flags);
1429 addMultilibFlag(Enabled: ABIName == "n32", Flag: "-mabi=n32", Flags);
1430 addMultilibFlag(Enabled: ABIName == "n64", Flag: "-mabi=n64", Flags);
1431 addMultilibFlag(Enabled: isSoftFloatABI(Args), Flag: "-msoft-float", Flags);
1432 addMultilibFlag(Enabled: !isSoftFloatABI(Args), Flag: "-mhard-float", Flags);
1433 addMultilibFlag(Enabled: isMipsEL(Arch: TargetArch), Flag: "-EL", Flags);
1434 addMultilibFlag(Enabled: !isMipsEL(Arch: TargetArch), Flag: "-EB", Flags);
1435
1436 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1437 TargetTriple.getOS() == llvm::Triple::Linux &&
1438 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1439 return findMipsMuslMultilibs(D, Flags, NonExistent, Result);
1440
1441 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1442 TargetTriple.getOS() == llvm::Triple::Linux &&
1443 TargetTriple.isGNUEnvironment())
1444 return findMipsMtiMultilibs(D, Flags, NonExistent, Result);
1445
1446 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1447 TargetTriple.getOS() == llvm::Triple::Linux &&
1448 TargetTriple.isGNUEnvironment())
1449 return findMipsImgMultilibs(D, Flags, NonExistent, Result);
1450
1451 if (findMipsCsMultilibs(D, Flags, NonExistent, Result))
1452 return true;
1453
1454 // Fallback to the regular toolchain-tree structure.
1455 Multilib Default;
1456 Result.Multilibs.push_back(M: Default);
1457 Result.Multilibs.FilterOut(F: NonExistent);
1458
1459 if (Result.Multilibs.select(D, Flags, Result.SelectedMultilibs)) {
1460 Result.BiarchSibling = Multilib();
1461 return true;
1462 }
1463
1464 return false;
1465}
1466
1467static void findAndroidArmMultilibs(const Driver &D,
1468 const llvm::Triple &TargetTriple,
1469 StringRef Path, const ArgList &Args,
1470 DetectedMultilibs &Result) {
1471 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1472 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1473 MultilibBuilder ArmV7Multilib = MultilibBuilder("/armv7-a")
1474 .flag(Flag: "-march=armv7-a")
1475 .flag(Flag: "-mthumb", /*Disallow=*/true);
1476 MultilibBuilder ThumbMultilib = MultilibBuilder("/thumb")
1477 .flag(Flag: "-march=armv7-a", /*Disallow=*/true)
1478 .flag(Flag: "-mthumb");
1479 MultilibBuilder ArmV7ThumbMultilib =
1480 MultilibBuilder("/armv7-a/thumb").flag(Flag: "-march=armv7-a").flag(Flag: "-mthumb");
1481 MultilibBuilder DefaultMultilib =
1482 MultilibBuilder("")
1483 .flag(Flag: "-march=armv7-a", /*Disallow=*/true)
1484 .flag(Flag: "-mthumb", /*Disallow=*/true);
1485 MultilibSet AndroidArmMultilibs =
1486 MultilibSetBuilder()
1487 .Either(M1: ThumbMultilib, M2: ArmV7Multilib, M3: ArmV7ThumbMultilib,
1488 M4: DefaultMultilib)
1489 .makeMultilibSet()
1490 .FilterOut(F: NonExistent);
1491
1492 Multilib::flags_list Flags;
1493 llvm::StringRef Arch = Args.getLastArgValue(Id: options::OPT_march_EQ);
1494 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1495 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1496 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1497 bool IsThumbMode = IsThumbArch ||
1498 Args.hasFlag(Pos: options::OPT_mthumb, Neg: options::OPT_mno_thumb, Default: false) ||
1499 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB);
1500 bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1501 (llvm::ARM::parseArchVersion(Arch) == 7 ||
1502 (IsArmArch && Arch == "" && IsV7SubArch));
1503 addMultilibFlag(Enabled: IsArmV7Mode, Flag: "-march=armv7-a", Flags);
1504 addMultilibFlag(Enabled: IsThumbMode, Flag: "-mthumb", Flags);
1505
1506 if (AndroidArmMultilibs.select(D, Flags, Result.SelectedMultilibs))
1507 Result.Multilibs = std::move(AndroidArmMultilibs);
1508}
1509
1510static bool findMSP430Multilibs(const Driver &D,
1511 const llvm::Triple &TargetTriple,
1512 StringRef Path, const ArgList &Args,
1513 DetectedMultilibs &Result) {
1514 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1515 MultilibBuilder WithoutExceptions =
1516 MultilibBuilder("/430").flag(Flag: "-exceptions", /*Disallow=*/true);
1517 MultilibBuilder WithExceptions =
1518 MultilibBuilder("/430/exceptions").flag(Flag: "-exceptions");
1519
1520 // FIXME: when clang starts to support msp430x ISA additional logic
1521 // to select between multilib must be implemented
1522 // MultilibBuilder MSP430xMultilib = MultilibBuilder("/large");
1523
1524 Result.Multilibs.push_back(M: WithoutExceptions.makeMultilib());
1525 Result.Multilibs.push_back(M: WithExceptions.makeMultilib());
1526 Result.Multilibs.FilterOut(F: NonExistent);
1527
1528 Multilib::flags_list Flags;
1529 addMultilibFlag(Enabled: Args.hasFlag(Pos: options::OPT_fexceptions,
1530 Neg: options::OPT_fno_exceptions, Default: false),
1531 Flag: "-exceptions", Flags);
1532 if (Result.Multilibs.select(D, Flags, Result.SelectedMultilibs))
1533 return true;
1534
1535 return false;
1536}
1537
1538static void findCSKYMultilibs(const Driver &D, const llvm::Triple &TargetTriple,
1539 StringRef Path, const ArgList &Args,
1540 DetectedMultilibs &Result) {
1541 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1542
1543 tools::csky::FloatABI TheFloatABI = tools::csky::getCSKYFloatABI(D, Args);
1544 std::optional<llvm::StringRef> Res =
1545 tools::csky::getCSKYArchName(D, Args, Triple: TargetTriple);
1546
1547 if (!Res)
1548 return;
1549 auto ARCHName = *Res;
1550
1551 Multilib::flags_list Flags;
1552 addMultilibFlag(Enabled: TheFloatABI == tools::csky::FloatABI::Hard, Flag: "-hard-fp",
1553 Flags);
1554 addMultilibFlag(Enabled: TheFloatABI == tools::csky::FloatABI::SoftFP, Flag: "-soft-fp",
1555 Flags);
1556 addMultilibFlag(Enabled: TheFloatABI == tools::csky::FloatABI::Soft, Flag: "-soft", Flags);
1557 addMultilibFlag(Enabled: ARCHName == "ck801", Flag: "-march=ck801", Flags);
1558 addMultilibFlag(Enabled: ARCHName == "ck802", Flag: "-march=ck802", Flags);
1559 addMultilibFlag(Enabled: ARCHName == "ck803", Flag: "-march=ck803", Flags);
1560 addMultilibFlag(Enabled: ARCHName == "ck804", Flag: "-march=ck804", Flags);
1561 addMultilibFlag(Enabled: ARCHName == "ck805", Flag: "-march=ck805", Flags);
1562 addMultilibFlag(Enabled: ARCHName == "ck807", Flag: "-march=ck807", Flags);
1563 addMultilibFlag(Enabled: ARCHName == "ck810", Flag: "-march=ck810", Flags);
1564 addMultilibFlag(Enabled: ARCHName == "ck810v", Flag: "-march=ck810v", Flags);
1565 addMultilibFlag(Enabled: ARCHName == "ck860", Flag: "-march=ck860", Flags);
1566 addMultilibFlag(Enabled: ARCHName == "ck860v", Flag: "-march=ck860v", Flags);
1567
1568 bool isBigEndian = false;
1569 if (Arg *A = Args.getLastArg(Ids: options::OPT_mlittle_endian,
1570 Ids: options::OPT_mbig_endian))
1571 isBigEndian = !A->getOption().matches(ID: options::OPT_mlittle_endian);
1572 addMultilibFlag(Enabled: isBigEndian, Flag: "-EB", Flags);
1573
1574 auto HardFloat = MultilibBuilder("/hard-fp").flag(Flag: "-hard-fp");
1575 auto SoftFpFloat = MultilibBuilder("/soft-fp").flag(Flag: "-soft-fp");
1576 auto SoftFloat = MultilibBuilder("").flag(Flag: "-soft");
1577 auto Arch801 = MultilibBuilder("/ck801").flag(Flag: "-march=ck801");
1578 auto Arch802 = MultilibBuilder("/ck802").flag(Flag: "-march=ck802");
1579 auto Arch803 = MultilibBuilder("/ck803").flag(Flag: "-march=ck803");
1580 // CK804 use the same library as CK803
1581 auto Arch804 = MultilibBuilder("/ck803").flag(Flag: "-march=ck804");
1582 auto Arch805 = MultilibBuilder("/ck805").flag(Flag: "-march=ck805");
1583 auto Arch807 = MultilibBuilder("/ck807").flag(Flag: "-march=ck807");
1584 auto Arch810 = MultilibBuilder("").flag(Flag: "-march=ck810");
1585 auto Arch810v = MultilibBuilder("/ck810v").flag(Flag: "-march=ck810v");
1586 auto Arch860 = MultilibBuilder("/ck860").flag(Flag: "-march=ck860");
1587 auto Arch860v = MultilibBuilder("/ck860v").flag(Flag: "-march=ck860v");
1588 auto BigEndian = MultilibBuilder("/big").flag(Flag: "-EB");
1589
1590 MultilibSet CSKYMultilibs =
1591 MultilibSetBuilder()
1592 .Maybe(M: BigEndian)
1593 .Either(Ms: {Arch801, Arch802, Arch803, Arch804, Arch805, Arch807,
1594 Arch810, Arch810v, Arch860, Arch860v})
1595 .Either(M1: HardFloat, M2: SoftFpFloat, M3: SoftFloat)
1596 .makeMultilibSet()
1597 .FilterOut(F: NonExistent);
1598
1599 if (CSKYMultilibs.select(D, Flags, Result.SelectedMultilibs))
1600 Result.Multilibs = std::move(CSKYMultilibs);
1601}
1602
1603/// Extend the multi-lib re-use selection mechanism for RISC-V.
1604/// This function will try to re-use multi-lib if they are compatible.
1605/// Definition of compatible:
1606/// - ABI must be the same.
1607/// - multi-lib is a subset of current arch, e.g. multi-lib=march=rv32im
1608/// is a subset of march=rv32imc.
1609/// - march that contains atomic extension can't reuse multi-lib that
1610/// doesn't have atomic, vice versa. e.g. multi-lib=march=rv32im and
1611/// march=rv32ima are not compatible, because software and hardware
1612/// atomic operation can't work together correctly.
1613static bool
1614selectRISCVMultilib(const Driver &D, const MultilibSet &RISCVMultilibSet,
1615 const Multilib::flags_list &Flags,
1616 llvm::SmallVectorImpl<Multilib> &SelectedMultilibs) {
1617 // Try to find the perfect matching multi-lib first.
1618 if (RISCVMultilibSet.select(D, Flags, SelectedMultilibs))
1619 return true;
1620
1621 Multilib::flags_list NewFlags;
1622 std::vector<MultilibBuilder> NewMultilibs;
1623
1624 // Collect all flags and extract Arch from march
1625 StringRef Arch;
1626 for (StringRef Flag : Flags) {
1627 if (Flag.consume_front(Prefix: "-march=")) {
1628 Arch = Flag;
1629 continue;
1630 }
1631
1632 NewFlags.push_back(x: Flag.str());
1633 }
1634
1635 llvm::Expected<std::unique_ptr<llvm::RISCVISAInfo>> ParseResult =
1636 llvm::RISCVISAInfo::parseArchString(
1637 Arch, /*EnableExperimentalExtension=*/true,
1638 /*ExperimentalExtensionVersionCheck=*/false);
1639 // Ignore any error here, we assume it will be handled in another place.
1640 if (llvm::errorToBool(Err: ParseResult.takeError()))
1641 return false;
1642
1643 auto &ISAInfo = *ParseResult;
1644
1645 addMultilibFlag(Enabled: ISAInfo->getXLen() == 32, Flag: "-m32", Flags&: NewFlags);
1646 addMultilibFlag(Enabled: ISAInfo->getXLen() == 64, Flag: "-m64", Flags&: NewFlags);
1647
1648 llvm::StringSet<> AllArchExts;
1649 // Reconstruct multi-lib list, and break march option into separated
1650 // extension. e.g. march=rv32im -> +i +m
1651 for (const auto &M : RISCVMultilibSet) {
1652 bool Skip = false;
1653
1654 MultilibBuilder NewMultilib =
1655 MultilibBuilder(M.gccSuffix(), M.osSuffix(), M.includeSuffix());
1656 for (StringRef Flag : M.flags()) {
1657 // Add back all flags except -march.
1658 if (!Flag.consume_front(Prefix: "-march=")) {
1659 NewMultilib.flag(Flag);
1660 continue;
1661 }
1662
1663 // Break down -march into individual extension.
1664 llvm::Expected<std::unique_ptr<llvm::RISCVISAInfo>> MLConfigParseResult =
1665 llvm::RISCVISAInfo::parseArchString(
1666 Arch: Flag, /*EnableExperimentalExtension=*/true,
1667 /*ExperimentalExtensionVersionCheck=*/false);
1668 // Ignore any error here, we assume it will handled in another place.
1669 if (llvm::errorToBool(Err: MLConfigParseResult.takeError())) {
1670 // We might get a parsing error if rv32e in the list, we could just skip
1671 // that and process the rest of multi-lib configs.
1672 Skip = true;
1673 continue;
1674 }
1675 auto &MLConfigISAInfo = *MLConfigParseResult;
1676
1677 for (auto &MLConfigArchExt : MLConfigISAInfo->getExtensions()) {
1678 auto ExtName = MLConfigArchExt.first;
1679 NewMultilib.flag(Flag: Twine("-", ExtName).str());
1680
1681 if (AllArchExts.insert(key: ExtName).second) {
1682 addMultilibFlag(Enabled: ISAInfo->hasExtension(Ext: ExtName),
1683 Flag: Twine("-", ExtName).str(), Flags&: NewFlags);
1684 }
1685 }
1686
1687 // Check the XLEN explicitly.
1688 if (MLConfigISAInfo->getXLen() == 32) {
1689 NewMultilib.flag(Flag: "-m32");
1690 NewMultilib.flag(Flag: "-m64", /*Disallow*/ true);
1691 } else {
1692 NewMultilib.flag(Flag: "-m32", /*Disallow*/ true);
1693 NewMultilib.flag(Flag: "-m64");
1694 }
1695
1696 // Atomic extension must be explicitly checked, soft and hard atomic
1697 // operation never co-work correctly.
1698 if (!MLConfigISAInfo->hasExtension(Ext: "a"))
1699 NewMultilib.flag(Flag: "-a", /*Disallow*/ true);
1700 }
1701
1702 if (Skip)
1703 continue;
1704
1705 NewMultilibs.emplace_back(args&: NewMultilib);
1706 }
1707
1708 // Build an internal used only multi-lib list, used for checking any
1709 // compatible multi-lib.
1710 MultilibSet NewRISCVMultilibs =
1711 MultilibSetBuilder().Either(Ms: NewMultilibs).makeMultilibSet();
1712
1713 if (NewRISCVMultilibs.select(D, Flags: NewFlags, SelectedMultilibs))
1714 for (const Multilib &NewSelectedM : SelectedMultilibs)
1715 for (const auto &M : RISCVMultilibSet)
1716 // Look up the corresponding multi-lib entry in original multi-lib set.
1717 if (M.gccSuffix() == NewSelectedM.gccSuffix())
1718 return true;
1719
1720 return false;
1721}
1722
1723static void findRISCVBareMetalMultilibs(const Driver &D,
1724 const llvm::Triple &TargetTriple,
1725 StringRef Path, const ArgList &Args,
1726 DetectedMultilibs &Result) {
1727 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1728 struct RiscvMultilib {
1729 StringRef march;
1730 StringRef mabi;
1731 };
1732 // currently only support the set of multilibs like riscv-gnu-toolchain does.
1733 // TODO: support MULTILIB_REUSE
1734 constexpr RiscvMultilib RISCVMultilibSet[] = {
1735 {.march: "rv32i", .mabi: "ilp32"}, {.march: "rv32im", .mabi: "ilp32"}, {.march: "rv32iac", .mabi: "ilp32"},
1736 {.march: "rv32imac", .mabi: "ilp32"}, {.march: "rv32imafc", .mabi: "ilp32f"}, {.march: "rv64imac", .mabi: "lp64"},
1737 {.march: "rv64imafdc", .mabi: "lp64d"}};
1738
1739 std::vector<MultilibBuilder> Ms;
1740 for (auto Element : RISCVMultilibSet) {
1741 // multilib path rule is ${march}/${mabi}
1742 Ms.emplace_back(
1743 args&: MultilibBuilder(
1744 (Twine(Element.march) + "/" + Twine(Element.mabi)).str())
1745 .flag(Flag: Twine("-march=", Element.march).str())
1746 .flag(Flag: Twine("-mabi=", Element.mabi).str()));
1747 }
1748
1749 StringRef EndiannessSuffix = TargetTriple.isLittleEndian() ? "" : "be";
1750 MultilibSet RISCVMultilibs =
1751 MultilibSetBuilder()
1752 .Either(Ms)
1753 .makeMultilibSet()
1754 .FilterOut(F: NonExistent)
1755 .setFilePathsCallback([EndiannessSuffix](const Multilib &M) {
1756 return std::vector<std::string>(
1757 {M.gccSuffix(),
1758 "/../../../../riscv64" + EndiannessSuffix.str() +
1759 "-unknown-elf/lib" + M.gccSuffix(),
1760 "/../../../../riscv32" + EndiannessSuffix.str() +
1761 "-unknown-elf/lib" + M.gccSuffix()});
1762 });
1763
1764 Multilib::flags_list Flags;
1765 StringRef ABIName = tools::riscv::getRISCVABI(Args, Triple: TargetTriple);
1766 std::string MArch = tools::riscv::getRISCVArch(Args, Triple: TargetTriple);
1767 Flags.push_back(x: "-march=" + MArch);
1768 Flags.push_back(x: "-mabi=" + ABIName.str());
1769
1770 if (selectRISCVMultilib(D, RISCVMultilibSet: RISCVMultilibs, Flags, SelectedMultilibs&: Result.SelectedMultilibs))
1771 Result.Multilibs = std::move(RISCVMultilibs);
1772}
1773
1774static void findRISCVMultilibs(const Driver &D,
1775 const llvm::Triple &TargetTriple, StringRef Path,
1776 const ArgList &Args, DetectedMultilibs &Result) {
1777 if (TargetTriple.getOS() == llvm::Triple::UnknownOS)
1778 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result);
1779
1780 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1781 MultilibBuilder Ilp32 =
1782 MultilibBuilder("lib32/ilp32").flag(Flag: "-m32").flag(Flag: "-mabi=ilp32");
1783 MultilibBuilder Ilp32f =
1784 MultilibBuilder("lib32/ilp32f").flag(Flag: "-m32").flag(Flag: "-mabi=ilp32f");
1785 MultilibBuilder Ilp32d =
1786 MultilibBuilder("lib32/ilp32d").flag(Flag: "-m32").flag(Flag: "-mabi=ilp32d");
1787 MultilibBuilder Lp64 =
1788 MultilibBuilder("lib64/lp64").flag(Flag: "-m64").flag(Flag: "-mabi=lp64");
1789 MultilibBuilder Lp64f =
1790 MultilibBuilder("lib64/lp64f").flag(Flag: "-m64").flag(Flag: "-mabi=lp64f");
1791 MultilibBuilder Lp64d =
1792 MultilibBuilder("lib64/lp64d").flag(Flag: "-m64").flag(Flag: "-mabi=lp64d");
1793 MultilibSet RISCVMultilibs =
1794 MultilibSetBuilder()
1795 .Either(Ms: {Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d})
1796 .makeMultilibSet()
1797 .FilterOut(F: NonExistent);
1798
1799 Multilib::flags_list Flags;
1800 bool IsRV64 = TargetTriple.isRISCV64();
1801 StringRef ABIName = tools::riscv::getRISCVABI(Args, Triple: TargetTriple);
1802
1803 addMultilibFlag(Enabled: !IsRV64, Flag: "-m32", Flags);
1804 addMultilibFlag(Enabled: IsRV64, Flag: "-m64", Flags);
1805 addMultilibFlag(Enabled: ABIName == "ilp32", Flag: "-mabi=ilp32", Flags);
1806 addMultilibFlag(Enabled: ABIName == "ilp32f", Flag: "-mabi=ilp32f", Flags);
1807 addMultilibFlag(Enabled: ABIName == "ilp32d", Flag: "-mabi=ilp32d", Flags);
1808 addMultilibFlag(Enabled: ABIName == "lp64", Flag: "-mabi=lp64", Flags);
1809 addMultilibFlag(Enabled: ABIName == "lp64f", Flag: "-mabi=lp64f", Flags);
1810 addMultilibFlag(Enabled: ABIName == "lp64d", Flag: "-mabi=lp64d", Flags);
1811
1812 if (RISCVMultilibs.select(D, Flags, Result.SelectedMultilibs))
1813 Result.Multilibs = std::move(RISCVMultilibs);
1814}
1815
1816static bool findBiarchMultilibs(const Driver &D,
1817 const llvm::Triple &TargetTriple,
1818 StringRef Path, const ArgList &Args,
1819 bool NeedsBiarchSuffix,
1820 DetectedMultilibs &Result) {
1821 MultilibBuilder DefaultBuilder;
1822
1823 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1824 // in what would normally be GCCInstallPath and put the 64-bit
1825 // libs in a subdirectory named 64. The simple logic we follow is that
1826 // *if* there is a subdirectory of the right name with crtbegin.o in it,
1827 // we use that. If not, and if not a biarch triple alias, we look for
1828 // crtbegin.o without the subdirectory.
1829
1830 StringRef Suff64 = "/64";
1831 // Solaris uses platform-specific suffixes instead of /64.
1832 if (TargetTriple.isOSSolaris()) {
1833 switch (TargetTriple.getArch()) {
1834 case llvm::Triple::x86:
1835 case llvm::Triple::x86_64:
1836 Suff64 = "/amd64";
1837 break;
1838 case llvm::Triple::sparc:
1839 case llvm::Triple::sparcv9:
1840 Suff64 = "/sparcv9";
1841 break;
1842 default:
1843 break;
1844 }
1845 }
1846
1847 Multilib Alt64 = MultilibBuilder()
1848 .gccSuffix(S: Suff64)
1849 .includeSuffix(S: Suff64)
1850 .flag(Flag: "-m32", /*Disallow=*/true)
1851 .flag(Flag: "-m64")
1852 .flag(Flag: "-mx32", /*Disallow=*/true)
1853 .makeMultilib();
1854 Multilib Alt32 = MultilibBuilder()
1855 .gccSuffix(S: "/32")
1856 .includeSuffix(S: "/32")
1857 .flag(Flag: "-m32")
1858 .flag(Flag: "-m64", /*Disallow=*/true)
1859 .flag(Flag: "-mx32", /*Disallow=*/true)
1860 .makeMultilib();
1861 Multilib Altx32 = MultilibBuilder()
1862 .gccSuffix(S: "/x32")
1863 .includeSuffix(S: "/x32")
1864 .flag(Flag: "-m32", /*Disallow=*/true)
1865 .flag(Flag: "-m64", /*Disallow=*/true)
1866 .flag(Flag: "-mx32")
1867 .makeMultilib();
1868 Multilib Alt32sparc = MultilibBuilder()
1869 .gccSuffix(S: "/sparcv8plus")
1870 .includeSuffix(S: "/sparcv8plus")
1871 .flag(Flag: "-m32")
1872 .flag(Flag: "-m64", /*Disallow=*/true)
1873 .makeMultilib();
1874
1875 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
1876 FilterNonExistent NonExistent(
1877 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
1878
1879 // Determine default multilib from: 32, 64, x32
1880 // Also handle cases such as 64 on 32, 32 on 64, etc.
1881 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
1882 const bool IsX32 = TargetTriple.isX32();
1883 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
1884 Want = WANT64;
1885 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32sparc))
1886 Want = WANT64;
1887 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
1888 Want = WANT64;
1889 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
1890 Want = WANT32;
1891 else if (TargetTriple.isArch64Bit() && !NonExistent(Alt32sparc))
1892 Want = WANT64;
1893 else {
1894 if (TargetTriple.isArch32Bit())
1895 Want = NeedsBiarchSuffix ? WANT64 : WANT32;
1896 else if (IsX32)
1897 Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
1898 else
1899 Want = NeedsBiarchSuffix ? WANT32 : WANT64;
1900 }
1901
1902 if (Want == WANT32)
1903 DefaultBuilder.flag(Flag: "-m32")
1904 .flag(Flag: "-m64", /*Disallow=*/true)
1905 .flag(Flag: "-mx32", /*Disallow=*/true);
1906 else if (Want == WANT64)
1907 DefaultBuilder.flag(Flag: "-m32", /*Disallow=*/true)
1908 .flag(Flag: "-m64")
1909 .flag(Flag: "-mx32", /*Disallow=*/true);
1910 else if (Want == WANTX32)
1911 DefaultBuilder.flag(Flag: "-m32", /*Disallow=*/true)
1912 .flag(Flag: "-m64", /*Disallow=*/true)
1913 .flag(Flag: "-mx32");
1914 else
1915 return false;
1916
1917 Multilib Default = DefaultBuilder.makeMultilib();
1918
1919 Result.Multilibs.push_back(M: Default);
1920 Result.Multilibs.push_back(M: Alt64);
1921 Result.Multilibs.push_back(M: Alt32);
1922 Result.Multilibs.push_back(M: Altx32);
1923 Result.Multilibs.push_back(M: Alt32sparc);
1924
1925 Result.Multilibs.FilterOut(F: NonExistent);
1926
1927 Multilib::flags_list Flags;
1928 addMultilibFlag(Enabled: TargetTriple.isArch64Bit() && !IsX32, Flag: "-m64", Flags);
1929 addMultilibFlag(Enabled: TargetTriple.isArch32Bit(), Flag: "-m32", Flags);
1930 addMultilibFlag(Enabled: TargetTriple.isArch64Bit() && IsX32, Flag: "-mx32", Flags);
1931
1932 if (!Result.Multilibs.select(D, Flags, Result.SelectedMultilibs))
1933 return false;
1934
1935 if (Result.SelectedMultilibs.back() == Alt64 ||
1936 Result.SelectedMultilibs.back() == Alt32 ||
1937 Result.SelectedMultilibs.back() == Altx32 ||
1938 Result.SelectedMultilibs.back() == Alt32sparc)
1939 Result.BiarchSibling = Default;
1940
1941 return true;
1942}
1943
1944/// Generic_GCC - A tool chain using the 'gcc' command to perform
1945/// all subcommands; this relies on gcc translating the majority of
1946/// command line options.
1947
1948/// Less-than for GCCVersion, implementing a Strict Weak Ordering.
1949bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
1950 int RHSPatch,
1951 StringRef RHSPatchSuffix) const {
1952 if (Major != RHSMajor)
1953 return Major < RHSMajor;
1954 if (Minor != RHSMinor) {
1955 // Note that versions without a specified minor sort higher than those with
1956 // a minor.
1957 if (RHSMinor == -1)
1958 return true;
1959 if (Minor == -1)
1960 return false;
1961 return Minor < RHSMinor;
1962 }
1963 if (Patch != RHSPatch) {
1964 // Note that versions without a specified patch sort higher than those with
1965 // a patch.
1966 if (RHSPatch == -1)
1967 return true;
1968 if (Patch == -1)
1969 return false;
1970
1971 // Otherwise just sort on the patch itself.
1972 return Patch < RHSPatch;
1973 }
1974 if (PatchSuffix != RHSPatchSuffix) {
1975 // Sort empty suffixes higher.
1976 if (RHSPatchSuffix.empty())
1977 return true;
1978 if (PatchSuffix.empty())
1979 return false;
1980
1981 // Provide a lexicographic sort to make this a total ordering.
1982 return PatchSuffix < RHSPatchSuffix;
1983 }
1984
1985 // The versions are equal.
1986 return false;
1987}
1988
1989/// Parse a GCCVersion object out of a string of text.
1990///
1991/// This is the primary means of forming GCCVersion objects.
1992/*static*/
1993Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) {
1994 const GCCVersion BadVersion = {.Text: VersionText.str(), .Major: -1, .Minor: -1, .Patch: -1, .MajorStr: "", .MinorStr: "", .PatchSuffix: ""};
1995 std::pair<StringRef, StringRef> First = VersionText.split(Separator: '.');
1996 std::pair<StringRef, StringRef> Second = First.second.split(Separator: '.');
1997
1998 StringRef MajorStr = First.first;
1999 StringRef MinorStr = Second.first;
2000 StringRef PatchStr = Second.second;
2001
2002 GCCVersion GoodVersion = {.Text: VersionText.str(), .Major: -1, .Minor: -1, .Patch: -1, .MajorStr: "", .MinorStr: "", .PatchSuffix: ""};
2003
2004 // Parse version number strings such as:
2005 // 5
2006 // 4.4
2007 // 4.4-patched
2008 // 4.4.0
2009 // 4.4.x
2010 // 4.4.2-rc4
2011 // 4.4.x-patched
2012 // 10-win32
2013 // Split on '.', handle 1, 2 or 3 such segments. Each segment must contain
2014 // purely a number, except for the last one, where a non-number suffix
2015 // is stored in PatchSuffix. The third segment is allowed to not contain
2016 // a number at all.
2017
2018 auto TryParseLastNumber = [&](StringRef Segment, int &Number,
2019 std::string &OutStr) -> bool {
2020 // Look for a number prefix and parse that, and split out any trailing
2021 // string into GoodVersion.PatchSuffix.
2022
2023 if (size_t EndNumber = Segment.find_first_not_of(Chars: "0123456789")) {
2024 StringRef NumberStr = Segment.slice(Start: 0, End: EndNumber);
2025 if (NumberStr.getAsInteger(Radix: 10, Result&: Number) || Number < 0)
2026 return false;
2027 OutStr = NumberStr;
2028 GoodVersion.PatchSuffix = Segment.substr(Start: EndNumber);
2029 return true;
2030 }
2031 return false;
2032 };
2033 auto TryParseNumber = [](StringRef Segment, int &Number) -> bool {
2034 if (Segment.getAsInteger(Radix: 10, Result&: Number) || Number < 0)
2035 return false;
2036 return true;
2037 };
2038
2039 if (MinorStr.empty()) {
2040 // If no minor string, major is the last segment
2041 if (!TryParseLastNumber(MajorStr, GoodVersion.Major, GoodVersion.MajorStr))
2042 return BadVersion;
2043 return GoodVersion;
2044 }
2045
2046 if (!TryParseNumber(MajorStr, GoodVersion.Major))
2047 return BadVersion;
2048 GoodVersion.MajorStr = MajorStr;
2049
2050 if (PatchStr.empty()) {
2051 // If no patch string, minor is the last segment
2052 if (!TryParseLastNumber(MinorStr, GoodVersion.Minor, GoodVersion.MinorStr))
2053 return BadVersion;
2054 return GoodVersion;
2055 }
2056
2057 if (!TryParseNumber(MinorStr, GoodVersion.Minor))
2058 return BadVersion;
2059 GoodVersion.MinorStr = MinorStr;
2060
2061 // For the last segment, tolerate a missing number.
2062 std::string DummyStr;
2063 TryParseLastNumber(PatchStr, GoodVersion.Patch, DummyStr);
2064 return GoodVersion;
2065}
2066
2067static llvm::StringRef getGCCToolchainDir(const ArgList &Args,
2068 llvm::StringRef SysRoot) {
2069 const Arg *A = Args.getLastArg(Ids: options::OPT_gcc_toolchain);
2070 if (A)
2071 return A->getValue();
2072
2073 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX.
2074 // GCC_INSTALL_PREFIX specifies the gcc installation for the default
2075 // sysroot and is likely not valid with a different sysroot.
2076 if (!SysRoot.empty())
2077 return "";
2078
2079 return GCC_INSTALL_PREFIX;
2080}
2081
2082/// Initialize a GCCInstallationDetector from the driver.
2083///
2084/// This performs all of the autodetection and sets up the various paths.
2085/// Once constructed, a GCCInstallationDetector is essentially immutable.
2086///
2087/// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
2088/// should instead pull the target out of the driver. This is currently
2089/// necessary because the driver doesn't store the final version of the target
2090/// triple.
2091void Generic_GCC::GCCInstallationDetector::init(
2092 const llvm::Triple &TargetTriple, const ArgList &Args) {
2093 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
2094 ? TargetTriple.get64BitArchVariant()
2095 : TargetTriple.get32BitArchVariant();
2096 // The library directories which may contain GCC installations.
2097 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
2098 // The compatible GCC triples for this particular architecture.
2099 SmallVector<StringRef, 16> CandidateTripleAliases;
2100 SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
2101 // Add some triples that we want to check first.
2102 CandidateTripleAliases.push_back(Elt: TargetTriple.str());
2103 std::string TripleNoVendor, BiarchTripleNoVendor;
2104 if (TargetTriple.getVendor() == llvm::Triple::UnknownVendor) {
2105 StringRef OSEnv = TargetTriple.getOSAndEnvironmentName();
2106 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32)
2107 OSEnv = "linux-gnu";
2108 TripleNoVendor = (TargetTriple.getArchName().str() + '-' + OSEnv).str();
2109 CandidateTripleAliases.push_back(Elt: TripleNoVendor);
2110 if (BiarchVariantTriple.getArch() != llvm::Triple::UnknownArch) {
2111 BiarchTripleNoVendor =
2112 (BiarchVariantTriple.getArchName().str() + '-' + OSEnv).str();
2113 CandidateBiarchTripleAliases.push_back(Elt: BiarchTripleNoVendor);
2114 }
2115 }
2116
2117 CollectLibDirsAndTriples(TargetTriple, BiarchTriple: BiarchVariantTriple, LibDirs&: CandidateLibDirs,
2118 TripleAliases&: CandidateTripleAliases, BiarchLibDirs&: CandidateBiarchLibDirs,
2119 BiarchTripleAliases&: CandidateBiarchTripleAliases);
2120
2121 // If --gcc-install-dir= is specified, skip filesystem detection.
2122 if (const Arg *A = Args.getLastArg(Ids: options::OPT_gcc_install_dir_EQ);
2123 A && A->getValue()[0]) {
2124 StringRef InstallDir = A->getValue();
2125 if (!ScanGCCForMultilibs(TargetTriple, Args, Path: InstallDir, NeedsBiarchSuffix: false)) {
2126 D.Diag(DiagID: diag::err_drv_invalid_gcc_install_dir) << InstallDir;
2127 } else {
2128 (void)InstallDir.consume_back(Suffix: "/");
2129 StringRef VersionText = llvm::sys::path::filename(path: InstallDir);
2130 StringRef TripleText =
2131 llvm::sys::path::filename(path: llvm::sys::path::parent_path(path: InstallDir));
2132
2133 SelectedInstallation.Version = GCCVersion::Parse(VersionText);
2134 SelectedInstallation.GCCTriple.setTriple(TripleText);
2135 SelectedInstallation.GCCInstallPath = std::string(InstallDir);
2136 SelectedInstallation.GCCParentLibPath =
2137 SelectedInstallation.GCCInstallPath + "/../../..";
2138 IsValid = true;
2139 }
2140 return;
2141 }
2142
2143 // If --gcc-triple is specified use this instead of trying to
2144 // auto-detect a triple.
2145 if (const Arg *A = Args.getLastArg(Ids: options::OPT_gcc_triple_EQ)) {
2146 StringRef GCCTriple = A->getValue();
2147 CandidateTripleAliases.clear();
2148 CandidateTripleAliases.push_back(Elt: GCCTriple);
2149 }
2150
2151 // Compute the set of prefixes for our search.
2152 SmallVector<std::string, 8> Prefixes;
2153 StringRef GCCToolchainDir = getGCCToolchainDir(Args, SysRoot: D.SysRoot);
2154 if (GCCToolchainDir != "") {
2155 if (GCCToolchainDir.back() == '/')
2156 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
2157
2158 Prefixes.push_back(Elt: std::string(GCCToolchainDir));
2159 } else {
2160 // If we have a SysRoot, try that first.
2161 if (!D.SysRoot.empty()) {
2162 Prefixes.push_back(Elt: D.SysRoot);
2163 AddDefaultGCCPrefixes(TargetTriple, Prefixes, SysRoot: D.SysRoot);
2164 }
2165
2166 // Then look for gcc installed alongside clang.
2167 Prefixes.push_back(Elt: D.Dir + "/..");
2168
2169 // Next, look for prefix(es) that correspond to distribution-supplied gcc
2170 // installations.
2171 if (D.SysRoot.empty()) {
2172 // Typically /usr.
2173 AddDefaultGCCPrefixes(TargetTriple, Prefixes, SysRoot: D.SysRoot);
2174 }
2175
2176 // Try to respect gcc-config on Gentoo if --gcc-toolchain is not provided.
2177 // This avoids accidentally enforcing the system GCC version when using a
2178 // custom toolchain.
2179 SmallVector<StringRef, 16> GentooTestTriples;
2180 // Try to match an exact triple as target triple first.
2181 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for
2182 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu"
2183 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching
2184 // triple x86_64-gentoo-linux-gnu is present.
2185 GentooTestTriples.push_back(Elt: TargetTriple.str());
2186 GentooTestTriples.append(in_start: CandidateTripleAliases.begin(),
2187 in_end: CandidateTripleAliases.end());
2188 if (ScanGentooConfigs(TargetTriple, Args, CandidateTriples: GentooTestTriples,
2189 BiarchTriples: CandidateBiarchTripleAliases))
2190 return;
2191 }
2192
2193 // Loop over the various components which exist and select the best GCC
2194 // installation available. GCC installs are ranked by version number.
2195 const GCCVersion VersionZero = GCCVersion::Parse(VersionText: "0.0.0");
2196 SelectedInstallation.Version = VersionZero;
2197 for (const std::string &Prefix : Prefixes) {
2198 auto &VFS = D.getVFS();
2199 if (!VFS.exists(Path: Prefix))
2200 continue;
2201 for (StringRef Suffix : CandidateLibDirs) {
2202 const std::string LibDir = concat(Path: Prefix, A: Suffix);
2203 if (!VFS.exists(Path: LibDir))
2204 continue;
2205 // Maybe filter out <libdir>/gcc and <libdir>/gcc-cross.
2206 bool GCCDirExists = VFS.exists(Path: LibDir + "/gcc");
2207 bool GCCCrossDirExists = VFS.exists(Path: LibDir + "/gcc-cross");
2208 for (StringRef Candidate : CandidateTripleAliases)
2209 ScanLibDirForGCCTriple(TargetArch: TargetTriple, Args, LibDir, CandidateTriple: Candidate, NeedsBiarchSuffix: false,
2210 GCCDirExists, GCCCrossDirExists);
2211 }
2212 for (StringRef Suffix : CandidateBiarchLibDirs) {
2213 const std::string LibDir = Prefix + Suffix.str();
2214 if (!VFS.exists(Path: LibDir))
2215 continue;
2216 bool GCCDirExists = VFS.exists(Path: LibDir + "/gcc");
2217 bool GCCCrossDirExists = VFS.exists(Path: LibDir + "/gcc-cross");
2218 for (StringRef Candidate : CandidateBiarchTripleAliases)
2219 ScanLibDirForGCCTriple(TargetArch: TargetTriple, Args, LibDir, CandidateTriple: Candidate, NeedsBiarchSuffix: true,
2220 GCCDirExists, GCCCrossDirExists);
2221 }
2222
2223 // Skip other prefixes once a GCC installation is found.
2224 if (SelectedInstallation.Version > VersionZero)
2225 break;
2226 }
2227}
2228
2229void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
2230 for (const auto &InstallPath : CandidateGCCInstallPaths)
2231 OS << "Found candidate GCC installation: " << InstallPath << "\n";
2232
2233 if (!SelectedInstallation.GCCInstallPath.empty())
2234 OS << "Selected GCC installation: " << SelectedInstallation.GCCInstallPath
2235 << "\n";
2236
2237 for (const auto &Multilib : Multilibs)
2238 OS << "Candidate multilib: " << Multilib << "\n";
2239
2240 if (Multilibs.size() != 0 ||
2241 !SelectedInstallation.SelectedMultilib.isDefault())
2242 OS << "Selected multilib: " << SelectedInstallation.SelectedMultilib
2243 << "\n";
2244}
2245
2246bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const {
2247 if (BiarchSibling) {
2248 M = *BiarchSibling;
2249 return true;
2250 }
2251 return false;
2252}
2253
2254void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
2255 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes,
2256 StringRef SysRoot) {
2257
2258 if (TargetTriple.isOSHaiku()) {
2259 Prefixes.push_back(Elt: concat(Path: SysRoot, A: "/boot/system/develop/tools"));
2260 return;
2261 }
2262
2263 if (TargetTriple.isOSSolaris()) {
2264 // Solaris is a special case.
2265 // The GCC installation is under
2266 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/
2267 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with
2268 // /usr/gcc/<version> as a prefix.
2269
2270 SmallVector<std::pair<GCCVersion, std::string>, 8> SolarisPrefixes;
2271 std::string PrefixDir = concat(Path: SysRoot, A: "/usr/gcc");
2272 std::error_code EC;
2273 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(Dir: PrefixDir, EC),
2274 LE;
2275 !EC && LI != LE; LI = LI.increment(EC)) {
2276 StringRef VersionText = llvm::sys::path::filename(path: LI->path());
2277 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2278
2279 // Filter out obviously bad entries.
2280 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(RHSMajor: 4, RHSMinor: 1, RHSPatch: 1))
2281 continue;
2282
2283 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str();
2284 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc";
2285 if (!D.getVFS().exists(Path: CandidateLibPath))
2286 continue;
2287
2288 SolarisPrefixes.emplace_back(
2289 Args: std::make_pair(x&: CandidateVersion, y&: CandidatePrefix));
2290 }
2291 // Sort in reverse order so GCCInstallationDetector::init picks the latest.
2292 std::sort(first: SolarisPrefixes.rbegin(), last: SolarisPrefixes.rend());
2293 for (auto p : SolarisPrefixes)
2294 Prefixes.emplace_back(Args&: p.second);
2295 return;
2296 }
2297
2298 // For Linux, if --sysroot is not specified, look for RHEL/CentOS devtoolsets
2299 // and gcc-toolsets.
2300 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux &&
2301 D.getVFS().exists(Path: "/opt/rh")) {
2302 // TODO: We may want to remove this, since the functionality
2303 // can be achieved using config files.
2304 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-13/root/usr");
2305 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-12/root/usr");
2306 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-11/root/usr");
2307 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-10/root/usr");
2308 Prefixes.push_back(Elt: "/opt/rh/devtoolset-12/root/usr");
2309 Prefixes.push_back(Elt: "/opt/rh/devtoolset-11/root/usr");
2310 Prefixes.push_back(Elt: "/opt/rh/devtoolset-10/root/usr");
2311 Prefixes.push_back(Elt: "/opt/rh/devtoolset-9/root/usr");
2312 Prefixes.push_back(Elt: "/opt/rh/devtoolset-8/root/usr");
2313 Prefixes.push_back(Elt: "/opt/rh/devtoolset-7/root/usr");
2314 Prefixes.push_back(Elt: "/opt/rh/devtoolset-6/root/usr");
2315 Prefixes.push_back(Elt: "/opt/rh/devtoolset-4/root/usr");
2316 Prefixes.push_back(Elt: "/opt/rh/devtoolset-3/root/usr");
2317 Prefixes.push_back(Elt: "/opt/rh/devtoolset-2/root/usr");
2318 }
2319
2320 // Fall back to /usr which is used by most non-Solaris systems.
2321 Prefixes.push_back(Elt: concat(Path: SysRoot, A: "/usr"));
2322}
2323
2324/*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
2325 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
2326 SmallVectorImpl<StringRef> &LibDirs,
2327 SmallVectorImpl<StringRef> &TripleAliases,
2328 SmallVectorImpl<StringRef> &BiarchLibDirs,
2329 SmallVectorImpl<StringRef> &BiarchTripleAliases) {
2330 // Declare a bunch of static data sets that we'll select between below. These
2331 // are specifically designed to always refer to string literals to avoid any
2332 // lifetime or initialization issues.
2333 //
2334 // The *Triples variables hard code some triples so that, for example,
2335 // --target=aarch64 (incomplete triple) can detect lib/aarch64-linux-gnu.
2336 // They are not needed when the user has correct LLVM_DEFAULT_TARGET_TRIPLE
2337 // and always uses the full --target (e.g. --target=aarch64-linux-gnu). The
2338 // lists should shrink over time. Please don't add more elements to *Triples.
2339 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
2340 static const char *const AArch64Triples[] = {
2341 "aarch64-none-linux-gnu", "aarch64-redhat-linux", "aarch64-suse-linux"};
2342 static const char *const AArch64beLibDirs[] = {"/lib"};
2343 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu"};
2344
2345 static const char *const ARMLibDirs[] = {"/lib"};
2346 static const char *const ARMTriples[] = {"arm-linux-gnueabi"};
2347 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
2348 "armv7hl-redhat-linux-gnueabi",
2349 "armv6hl-suse-linux-gnueabi",
2350 "armv7hl-suse-linux-gnueabi"};
2351 static const char *const ARMebLibDirs[] = {"/lib"};
2352 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi"};
2353 static const char *const ARMebHFTriples[] = {
2354 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
2355
2356 static const char *const AVRLibDirs[] = {"/lib"};
2357 static const char *const AVRTriples[] = {"avr"};
2358
2359 static const char *const CSKYLibDirs[] = {"/lib"};
2360 static const char *const CSKYTriples[] = {
2361 "csky-linux-gnuabiv2", "csky-linux-uclibcabiv2", "csky-elf-noneabiv2"};
2362
2363 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
2364 static const char *const X86_64Triples[] = {
2365 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
2366 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
2367 "x86_64-redhat-linux", "x86_64-suse-linux",
2368 "x86_64-manbo-linux-gnu", "x86_64-slackware-linux",
2369 "x86_64-unknown-linux", "x86_64-amazon-linux"};
2370 static const char *const X32Triples[] = {"x86_64-linux-gnux32",
2371 "x86_64-pc-linux-gnux32"};
2372 static const char *const X32LibDirs[] = {"/libx32", "/lib"};
2373 static const char *const X86LibDirs[] = {"/lib32", "/lib"};
2374 static const char *const X86Triples[] = {
2375 "i586-linux-gnu", "i686-linux-gnu", "i686-pc-linux-gnu",
2376 "i386-redhat-linux6E", "i686-redhat-linux", "i386-redhat-linux",
2377 "i586-suse-linux", "i686-montavista-linux",
2378 };
2379
2380 static const char *const LoongArch32LibDirs[] = {"/lib32", "/lib"};
2381 static const char *const LoongArch32Triples[] = {
2382 "loongarch32-linux-gnu", "loongarch32-unknown-linux-gnu",
2383 "loongarch32-linux-gnuf32", "loongarch32-unknown-linux-gnuf32",
2384 "loongarch32-linux-gnusf", "loongarch32-unknown-linux-gnusf"};
2385
2386 static const char *const LoongArch64LibDirs[] = {"/lib64", "/lib"};
2387 static const char *const LoongArch64Triples[] = {
2388 "loongarch64-linux-gnu", "loongarch64-unknown-linux-gnu"};
2389
2390 static const char *const M68kLibDirs[] = {"/lib"};
2391 static const char *const M68kTriples[] = {"m68k-unknown-linux-gnu",
2392 "m68k-suse-linux"};
2393
2394 static const char *const MIPSLibDirs[] = {"/libo32", "/lib"};
2395 static const char *const MIPSTriples[] = {
2396 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu",
2397 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"};
2398 static const char *const MIPSELLibDirs[] = {"/libo32", "/lib"};
2399 static const char *const MIPSELTriples[] = {"mipsel-linux-gnu",
2400 "mips-img-linux-gnu"};
2401
2402 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
2403 static const char *const MIPS64Triples[] = {
2404 "mips-mti-linux-gnu", "mips-img-linux-gnu", "mips64-linux-gnuabi64",
2405 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"};
2406 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
2407 static const char *const MIPS64ELTriples[] = {
2408 "mips-mti-linux-gnu", "mips-img-linux-gnu", "mips64el-linux-gnuabi64",
2409 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64"};
2410
2411 static const char *const MIPSN32LibDirs[] = {"/lib32"};
2412 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32",
2413 "mipsisa64r6-linux-gnuabin32"};
2414 static const char *const MIPSN32ELLibDirs[] = {"/lib32"};
2415 static const char *const MIPSN32ELTriples[] = {
2416 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"};
2417
2418 static const char *const MSP430LibDirs[] = {"/lib"};
2419 static const char *const MSP430Triples[] = {"msp430-elf"};
2420
2421 static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
2422 static const char *const PPCTriples[] = {
2423 "powerpc-unknown-linux-gnu",
2424 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a
2425 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux".
2426 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"};
2427 static const char *const PPCLELibDirs[] = {"/lib32", "/lib"};
2428 static const char *const PPCLETriples[] = {"powerpcle-unknown-linux-gnu",
2429 "powerpcle-linux-musl"};
2430
2431 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
2432 static const char *const PPC64Triples[] = {"powerpc64-unknown-linux-gnu",
2433 "powerpc64-suse-linux",
2434 "ppc64-redhat-linux"};
2435 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
2436 static const char *const PPC64LETriples[] = {
2437 "powerpc64le-unknown-linux-gnu", "powerpc64le-none-linux-gnu",
2438 "powerpc64le-suse-linux", "ppc64le-redhat-linux"};
2439
2440 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"};
2441 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu",
2442 "riscv32-unknown-elf"};
2443 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"};
2444 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu",
2445 "riscv64-unknown-elf"};
2446
2447 static const char *const RISCV32beLibDirs[] = {"/lib32", "/lib"};
2448 static const char *const RISCV32beTriples[] = {"riscv32be-unknown-linux-gnu",
2449 "riscv32be-linux-gnu",
2450 "riscv32be-unknown-elf"};
2451 static const char *const RISCV64beLibDirs[] = {"/lib64", "/lib"};
2452 static const char *const RISCV64beTriples[] = {"riscv64be-unknown-linux-gnu",
2453 "riscv64be-linux-gnu",
2454 "riscv64be-unknown-elf"};
2455
2456 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
2457 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
2458 "sparcv8-linux-gnu"};
2459 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
2460 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
2461 "sparcv9-linux-gnu"};
2462
2463 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
2464 static const char *const SystemZTriples[] = {
2465 "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu", "s390x-suse-linux",
2466 "s390x-redhat-linux"};
2467
2468 using std::begin;
2469 using std::end;
2470
2471 if (TargetTriple.isOSSolaris()) {
2472 static const char *const SolarisLibDirs[] = {"/lib"};
2473 static const char *const SolarisSparcV8Triples[] = {
2474 "sparc-sun-solaris2.11"};
2475 static const char *const SolarisSparcV9Triples[] = {
2476 "sparcv9-sun-solaris2.11"};
2477 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11"};
2478 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11"};
2479 LibDirs.append(in_start: begin(arr: SolarisLibDirs), in_end: end(arr: SolarisLibDirs));
2480 BiarchLibDirs.append(in_start: begin(arr: SolarisLibDirs), in_end: end(arr: SolarisLibDirs));
2481 switch (TargetTriple.getArch()) {
2482 case llvm::Triple::x86:
2483 TripleAliases.append(in_start: begin(arr: SolarisX86Triples), in_end: end(arr: SolarisX86Triples));
2484 BiarchTripleAliases.append(in_start: begin(arr: SolarisX86_64Triples),
2485 in_end: end(arr: SolarisX86_64Triples));
2486 break;
2487 case llvm::Triple::x86_64:
2488 TripleAliases.append(in_start: begin(arr: SolarisX86_64Triples),
2489 in_end: end(arr: SolarisX86_64Triples));
2490 BiarchTripleAliases.append(in_start: begin(arr: SolarisX86Triples),
2491 in_end: end(arr: SolarisX86Triples));
2492 break;
2493 case llvm::Triple::sparc:
2494 TripleAliases.append(in_start: begin(arr: SolarisSparcV8Triples),
2495 in_end: end(arr: SolarisSparcV8Triples));
2496 BiarchTripleAliases.append(in_start: begin(arr: SolarisSparcV9Triples),
2497 in_end: end(arr: SolarisSparcV9Triples));
2498 break;
2499 case llvm::Triple::sparcv9:
2500 TripleAliases.append(in_start: begin(arr: SolarisSparcV9Triples),
2501 in_end: end(arr: SolarisSparcV9Triples));
2502 BiarchTripleAliases.append(in_start: begin(arr: SolarisSparcV8Triples),
2503 in_end: end(arr: SolarisSparcV8Triples));
2504 break;
2505 default:
2506 break;
2507 }
2508 return;
2509 }
2510
2511 // Android targets should not use GNU/Linux tools or libraries.
2512 if (TargetTriple.isAndroid()) {
2513 static const char *const AArch64AndroidTriples[] = {
2514 "aarch64-linux-android"};
2515 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"};
2516 static const char *const X86AndroidTriples[] = {"i686-linux-android"};
2517 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"};
2518
2519 switch (TargetTriple.getArch()) {
2520 case llvm::Triple::aarch64:
2521 LibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2522 TripleAliases.append(in_start: begin(arr: AArch64AndroidTriples),
2523 in_end: end(arr: AArch64AndroidTriples));
2524 break;
2525 case llvm::Triple::arm:
2526 case llvm::Triple::thumb:
2527 LibDirs.append(in_start: begin(arr: ARMLibDirs), in_end: end(arr: ARMLibDirs));
2528 TripleAliases.append(in_start: begin(arr: ARMAndroidTriples), in_end: end(arr: ARMAndroidTriples));
2529 break;
2530 case llvm::Triple::x86_64:
2531 LibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2532 TripleAliases.append(in_start: begin(arr: X86_64AndroidTriples),
2533 in_end: end(arr: X86_64AndroidTriples));
2534 BiarchLibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2535 BiarchTripleAliases.append(in_start: begin(arr: X86AndroidTriples),
2536 in_end: end(arr: X86AndroidTriples));
2537 break;
2538 case llvm::Triple::x86:
2539 LibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2540 TripleAliases.append(in_start: begin(arr: X86AndroidTriples), in_end: end(arr: X86AndroidTriples));
2541 BiarchLibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2542 BiarchTripleAliases.append(in_start: begin(arr: X86_64AndroidTriples),
2543 in_end: end(arr: X86_64AndroidTriples));
2544 break;
2545 default:
2546 break;
2547 }
2548
2549 return;
2550 }
2551
2552 if (TargetTriple.isOSHurd()) {
2553 switch (TargetTriple.getArch()) {
2554 case llvm::Triple::aarch64:
2555 LibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2556 TripleAliases.push_back(Elt: "aarch64-gnu");
2557 break;
2558 case llvm::Triple::riscv64:
2559 LibDirs.append(in_start: begin(arr: RISCV64LibDirs), in_end: end(arr: RISCV64LibDirs));
2560 TripleAliases.push_back(Elt: "riscv64-gnu");
2561 break;
2562 case llvm::Triple::x86_64:
2563 LibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2564 TripleAliases.push_back(Elt: "x86_64-gnu");
2565 break;
2566 case llvm::Triple::x86:
2567 LibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2568 TripleAliases.push_back(Elt: "i686-gnu");
2569 break;
2570 default:
2571 break;
2572 }
2573
2574 return;
2575 }
2576
2577 if (TargetTriple.isWindowsCygwinEnvironment()) {
2578 LibDirs.push_back(Elt: "/lib");
2579 switch (TargetTriple.getArch()) {
2580 case llvm::Triple::x86_64:
2581 TripleAliases.append(IL: {"x86_64-pc-cygwin", "x86_64-pc-msys"});
2582 break;
2583 case llvm::Triple::x86:
2584 TripleAliases.append(IL: {"i686-pc-cygwin", "i686-pc-msys"});
2585 break;
2586 default:
2587 break;
2588 }
2589
2590 return;
2591 }
2592
2593 switch (TargetTriple.getArch()) {
2594 case llvm::Triple::aarch64:
2595 LibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2596 TripleAliases.append(in_start: begin(arr: AArch64Triples), in_end: end(arr: AArch64Triples));
2597 BiarchLibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2598 BiarchTripleAliases.append(in_start: begin(arr: AArch64Triples), in_end: end(arr: AArch64Triples));
2599 break;
2600 case llvm::Triple::aarch64_be:
2601 LibDirs.append(in_start: begin(arr: AArch64beLibDirs), in_end: end(arr: AArch64beLibDirs));
2602 TripleAliases.append(in_start: begin(arr: AArch64beTriples), in_end: end(arr: AArch64beTriples));
2603 BiarchLibDirs.append(in_start: begin(arr: AArch64beLibDirs), in_end: end(arr: AArch64beLibDirs));
2604 BiarchTripleAliases.append(in_start: begin(arr: AArch64beTriples), in_end: end(arr: AArch64beTriples));
2605 break;
2606 case llvm::Triple::arm:
2607 case llvm::Triple::thumb:
2608 LibDirs.append(in_start: begin(arr: ARMLibDirs), in_end: end(arr: ARMLibDirs));
2609 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF ||
2610 TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHFT64 ||
2611 TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF ||
2612 TargetTriple.getEnvironment() == llvm::Triple::EABIHF) {
2613 TripleAliases.append(in_start: begin(arr: ARMHFTriples), in_end: end(arr: ARMHFTriples));
2614 } else {
2615 TripleAliases.append(in_start: begin(arr: ARMTriples), in_end: end(arr: ARMTriples));
2616 }
2617 break;
2618 case llvm::Triple::armeb:
2619 case llvm::Triple::thumbeb:
2620 LibDirs.append(in_start: begin(arr: ARMebLibDirs), in_end: end(arr: ARMebLibDirs));
2621 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF ||
2622 TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHFT64 ||
2623 TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF ||
2624 TargetTriple.getEnvironment() == llvm::Triple::EABIHF) {
2625 TripleAliases.append(in_start: begin(arr: ARMebHFTriples), in_end: end(arr: ARMebHFTriples));
2626 } else {
2627 TripleAliases.append(in_start: begin(arr: ARMebTriples), in_end: end(arr: ARMebTriples));
2628 }
2629 break;
2630 case llvm::Triple::avr:
2631 LibDirs.append(in_start: begin(arr: AVRLibDirs), in_end: end(arr: AVRLibDirs));
2632 TripleAliases.append(in_start: begin(arr: AVRTriples), in_end: end(arr: AVRTriples));
2633 break;
2634 case llvm::Triple::csky:
2635 LibDirs.append(in_start: begin(arr: CSKYLibDirs), in_end: end(arr: CSKYLibDirs));
2636 TripleAliases.append(in_start: begin(arr: CSKYTriples), in_end: end(arr: CSKYTriples));
2637 break;
2638 case llvm::Triple::x86_64:
2639 if (TargetTriple.isX32()) {
2640 LibDirs.append(in_start: begin(arr: X32LibDirs), in_end: end(arr: X32LibDirs));
2641 TripleAliases.append(in_start: begin(arr: X32Triples), in_end: end(arr: X32Triples));
2642 BiarchLibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2643 BiarchTripleAliases.append(in_start: begin(arr: X86_64Triples), in_end: end(arr: X86_64Triples));
2644 } else {
2645 LibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2646 TripleAliases.append(in_start: begin(arr: X86_64Triples), in_end: end(arr: X86_64Triples));
2647 BiarchLibDirs.append(in_start: begin(arr: X32LibDirs), in_end: end(arr: X32LibDirs));
2648 BiarchTripleAliases.append(in_start: begin(arr: X32Triples), in_end: end(arr: X32Triples));
2649 }
2650 BiarchLibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2651 BiarchTripleAliases.append(in_start: begin(arr: X86Triples), in_end: end(arr: X86Triples));
2652 break;
2653 case llvm::Triple::x86:
2654 LibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2655 // MCU toolchain is 32 bit only and its triple alias is TargetTriple
2656 // itself, which will be appended below.
2657 if (!TargetTriple.isOSIAMCU()) {
2658 TripleAliases.append(in_start: begin(arr: X86Triples), in_end: end(arr: X86Triples));
2659 BiarchLibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2660 BiarchTripleAliases.append(in_start: begin(arr: X86_64Triples), in_end: end(arr: X86_64Triples));
2661 BiarchLibDirs.append(in_start: begin(arr: X32LibDirs), in_end: end(arr: X32LibDirs));
2662 BiarchTripleAliases.append(in_start: begin(arr: X32Triples), in_end: end(arr: X32Triples));
2663 }
2664 break;
2665 case llvm::Triple::loongarch32:
2666 LibDirs.append(in_start: begin(arr: LoongArch32LibDirs), in_end: end(arr: LoongArch32LibDirs));
2667 TripleAliases.append(in_start: begin(arr: LoongArch32Triples), in_end: end(arr: LoongArch32Triples));
2668 break;
2669 case llvm::Triple::loongarch64:
2670 LibDirs.append(in_start: begin(arr: LoongArch64LibDirs), in_end: end(arr: LoongArch64LibDirs));
2671 TripleAliases.append(in_start: begin(arr: LoongArch64Triples), in_end: end(arr: LoongArch64Triples));
2672 break;
2673 case llvm::Triple::m68k:
2674 LibDirs.append(in_start: begin(arr: M68kLibDirs), in_end: end(arr: M68kLibDirs));
2675 TripleAliases.append(in_start: begin(arr: M68kTriples), in_end: end(arr: M68kTriples));
2676 break;
2677 case llvm::Triple::mips:
2678 LibDirs.append(in_start: begin(arr: MIPSLibDirs), in_end: end(arr: MIPSLibDirs));
2679 TripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2680 BiarchLibDirs.append(in_start: begin(arr: MIPS64LibDirs), in_end: end(arr: MIPS64LibDirs));
2681 BiarchTripleAliases.append(in_start: begin(arr: MIPS64Triples), in_end: end(arr: MIPS64Triples));
2682 BiarchLibDirs.append(in_start: begin(arr: MIPSN32LibDirs), in_end: end(arr: MIPSN32LibDirs));
2683 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32Triples), in_end: end(arr: MIPSN32Triples));
2684 break;
2685 case llvm::Triple::mipsel:
2686 LibDirs.append(in_start: begin(arr: MIPSELLibDirs), in_end: end(arr: MIPSELLibDirs));
2687 TripleAliases.append(in_start: begin(arr: MIPSELTriples), in_end: end(arr: MIPSELTriples));
2688 TripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2689 BiarchLibDirs.append(in_start: begin(arr: MIPS64ELLibDirs), in_end: end(arr: MIPS64ELLibDirs));
2690 BiarchTripleAliases.append(in_start: begin(arr: MIPS64ELTriples), in_end: end(arr: MIPS64ELTriples));
2691 BiarchLibDirs.append(in_start: begin(arr: MIPSN32ELLibDirs), in_end: end(arr: MIPSN32ELLibDirs));
2692 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32ELTriples), in_end: end(arr: MIPSN32ELTriples));
2693 break;
2694 case llvm::Triple::mips64:
2695 LibDirs.append(in_start: begin(arr: MIPS64LibDirs), in_end: end(arr: MIPS64LibDirs));
2696 TripleAliases.append(in_start: begin(arr: MIPS64Triples), in_end: end(arr: MIPS64Triples));
2697 BiarchLibDirs.append(in_start: begin(arr: MIPSLibDirs), in_end: end(arr: MIPSLibDirs));
2698 BiarchTripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2699 BiarchLibDirs.append(in_start: begin(arr: MIPSN32LibDirs), in_end: end(arr: MIPSN32LibDirs));
2700 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32Triples), in_end: end(arr: MIPSN32Triples));
2701 break;
2702 case llvm::Triple::mips64el:
2703 LibDirs.append(in_start: begin(arr: MIPS64ELLibDirs), in_end: end(arr: MIPS64ELLibDirs));
2704 TripleAliases.append(in_start: begin(arr: MIPS64ELTriples), in_end: end(arr: MIPS64ELTriples));
2705 BiarchLibDirs.append(in_start: begin(arr: MIPSELLibDirs), in_end: end(arr: MIPSELLibDirs));
2706 BiarchTripleAliases.append(in_start: begin(arr: MIPSELTriples), in_end: end(arr: MIPSELTriples));
2707 BiarchLibDirs.append(in_start: begin(arr: MIPSN32ELLibDirs), in_end: end(arr: MIPSN32ELLibDirs));
2708 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32ELTriples), in_end: end(arr: MIPSN32ELTriples));
2709 BiarchTripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2710 break;
2711 case llvm::Triple::msp430:
2712 LibDirs.append(in_start: begin(arr: MSP430LibDirs), in_end: end(arr: MSP430LibDirs));
2713 TripleAliases.append(in_start: begin(arr: MSP430Triples), in_end: end(arr: MSP430Triples));
2714 break;
2715 case llvm::Triple::ppc:
2716 LibDirs.append(in_start: begin(arr: PPCLibDirs), in_end: end(arr: PPCLibDirs));
2717 TripleAliases.append(in_start: begin(arr: PPCTriples), in_end: end(arr: PPCTriples));
2718 BiarchLibDirs.append(in_start: begin(arr: PPC64LibDirs), in_end: end(arr: PPC64LibDirs));
2719 BiarchTripleAliases.append(in_start: begin(arr: PPC64Triples), in_end: end(arr: PPC64Triples));
2720 break;
2721 case llvm::Triple::ppcle:
2722 LibDirs.append(in_start: begin(arr: PPCLELibDirs), in_end: end(arr: PPCLELibDirs));
2723 TripleAliases.append(in_start: begin(arr: PPCLETriples), in_end: end(arr: PPCLETriples));
2724 BiarchLibDirs.append(in_start: begin(arr: PPC64LELibDirs), in_end: end(arr: PPC64LELibDirs));
2725 BiarchTripleAliases.append(in_start: begin(arr: PPC64LETriples), in_end: end(arr: PPC64LETriples));
2726 break;
2727 case llvm::Triple::ppc64:
2728 LibDirs.append(in_start: begin(arr: PPC64LibDirs), in_end: end(arr: PPC64LibDirs));
2729 TripleAliases.append(in_start: begin(arr: PPC64Triples), in_end: end(arr: PPC64Triples));
2730 BiarchLibDirs.append(in_start: begin(arr: PPCLibDirs), in_end: end(arr: PPCLibDirs));
2731 BiarchTripleAliases.append(in_start: begin(arr: PPCTriples), in_end: end(arr: PPCTriples));
2732 break;
2733 case llvm::Triple::ppc64le:
2734 LibDirs.append(in_start: begin(arr: PPC64LELibDirs), in_end: end(arr: PPC64LELibDirs));
2735 TripleAliases.append(in_start: begin(arr: PPC64LETriples), in_end: end(arr: PPC64LETriples));
2736 BiarchLibDirs.append(in_start: begin(arr: PPCLELibDirs), in_end: end(arr: PPCLELibDirs));
2737 BiarchTripleAliases.append(in_start: begin(arr: PPCLETriples), in_end: end(arr: PPCLETriples));
2738 break;
2739 case llvm::Triple::riscv32:
2740 LibDirs.append(in_start: begin(arr: RISCV32LibDirs), in_end: end(arr: RISCV32LibDirs));
2741 TripleAliases.append(in_start: begin(arr: RISCV32Triples), in_end: end(arr: RISCV32Triples));
2742 BiarchLibDirs.append(in_start: begin(arr: RISCV64LibDirs), in_end: end(arr: RISCV64LibDirs));
2743 BiarchTripleAliases.append(in_start: begin(arr: RISCV64Triples), in_end: end(arr: RISCV64Triples));
2744 break;
2745 case llvm::Triple::riscv64:
2746 LibDirs.append(in_start: begin(arr: RISCV64LibDirs), in_end: end(arr: RISCV64LibDirs));
2747 TripleAliases.append(in_start: begin(arr: RISCV64Triples), in_end: end(arr: RISCV64Triples));
2748 BiarchLibDirs.append(in_start: begin(arr: RISCV32LibDirs), in_end: end(arr: RISCV32LibDirs));
2749 BiarchTripleAliases.append(in_start: begin(arr: RISCV32Triples), in_end: end(arr: RISCV32Triples));
2750 break;
2751 case llvm::Triple::riscv32be:
2752 LibDirs.append(in_start: begin(arr: RISCV32beLibDirs), in_end: end(arr: RISCV32beLibDirs));
2753 TripleAliases.append(in_start: begin(arr: RISCV32beTriples), in_end: end(arr: RISCV32beTriples));
2754 BiarchLibDirs.append(in_start: begin(arr: RISCV64beLibDirs), in_end: end(arr: RISCV64beLibDirs));
2755 BiarchTripleAliases.append(in_start: begin(arr: RISCV64beTriples), in_end: end(arr: RISCV64beTriples));
2756 break;
2757 case llvm::Triple::riscv64be:
2758 LibDirs.append(in_start: begin(arr: RISCV64beLibDirs), in_end: end(arr: RISCV64beLibDirs));
2759 TripleAliases.append(in_start: begin(arr: RISCV64beTriples), in_end: end(arr: RISCV64beTriples));
2760 BiarchLibDirs.append(in_start: begin(arr: RISCV32beLibDirs), in_end: end(arr: RISCV32beLibDirs));
2761 BiarchTripleAliases.append(in_start: begin(arr: RISCV32beTriples), in_end: end(arr: RISCV32beTriples));
2762 break;
2763 case llvm::Triple::sparc:
2764 case llvm::Triple::sparcel:
2765 LibDirs.append(in_start: begin(arr: SPARCv8LibDirs), in_end: end(arr: SPARCv8LibDirs));
2766 TripleAliases.append(in_start: begin(arr: SPARCv8Triples), in_end: end(arr: SPARCv8Triples));
2767 BiarchLibDirs.append(in_start: begin(arr: SPARCv9LibDirs), in_end: end(arr: SPARCv9LibDirs));
2768 BiarchTripleAliases.append(in_start: begin(arr: SPARCv9Triples), in_end: end(arr: SPARCv9Triples));
2769 break;
2770 case llvm::Triple::sparcv9:
2771 LibDirs.append(in_start: begin(arr: SPARCv9LibDirs), in_end: end(arr: SPARCv9LibDirs));
2772 TripleAliases.append(in_start: begin(arr: SPARCv9Triples), in_end: end(arr: SPARCv9Triples));
2773 BiarchLibDirs.append(in_start: begin(arr: SPARCv8LibDirs), in_end: end(arr: SPARCv8LibDirs));
2774 BiarchTripleAliases.append(in_start: begin(arr: SPARCv8Triples), in_end: end(arr: SPARCv8Triples));
2775 break;
2776 case llvm::Triple::systemz:
2777 LibDirs.append(in_start: begin(arr: SystemZLibDirs), in_end: end(arr: SystemZLibDirs));
2778 TripleAliases.append(in_start: begin(arr: SystemZTriples), in_end: end(arr: SystemZTriples));
2779 break;
2780 default:
2781 // By default, just rely on the standard lib directories and the original
2782 // triple.
2783 break;
2784 }
2785
2786 // Also include the multiarch variant if it's different.
2787 if (TargetTriple.str() != BiarchTriple.str())
2788 BiarchTripleAliases.push_back(Elt: BiarchTriple.str());
2789}
2790
2791bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2792 const llvm::Triple &TargetTriple, const ArgList &Args,
2793 StringRef Path, bool NeedsBiarchSuffix) {
2794 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2795 DetectedMultilibs Detected;
2796
2797 // Android standalone toolchain could have multilibs for ARM and Thumb.
2798 // Debian mips multilibs behave more like the rest of the biarch ones,
2799 // so handle them there
2800 if (isArmOrThumbArch(Arch: TargetArch) && TargetTriple.isAndroid()) {
2801 // It should also work without multilibs in a simplified toolchain.
2802 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Result&: Detected);
2803 } else if (TargetTriple.isCSKY()) {
2804 findCSKYMultilibs(D, TargetTriple, Path, Args, Result&: Detected);
2805 } else if (TargetTriple.isMIPS()) {
2806 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Result&: Detected))
2807 return false;
2808 } else if (TargetTriple.isRISCV()) {
2809 findRISCVMultilibs(D, TargetTriple, Path, Args, Result&: Detected);
2810 } else if (isMSP430(Arch: TargetArch)) {
2811 findMSP430Multilibs(D, TargetTriple, Path, Args, Result&: Detected);
2812 } else if (TargetArch == llvm::Triple::avr) {
2813 // AVR has no multilibs.
2814 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2815 NeedsBiarchSuffix, Result&: Detected)) {
2816 return false;
2817 }
2818
2819 Multilibs = Detected.Multilibs;
2820 SelectedInstallation.SelectedMultilib =
2821 Detected.SelectedMultilibs.empty() ? Multilib()
2822 : Detected.SelectedMultilibs.back();
2823 BiarchSibling = Detected.BiarchSibling;
2824
2825 return true;
2826}
2827
2828bool Generic_GCC::GCCInstallationDetector::SelectGCCInstallationDirectory(
2829 const SmallVector<Generic_GCC::GCCInstallCandidate, 3> &Installations,
2830 const ArgList &Args,
2831 Generic_GCC::GCCInstallCandidate &SelectedInstallation) const {
2832 if (Installations.empty())
2833 return false;
2834
2835 SelectedInstallation =
2836 *max_element(Range: Installations, C: [](const auto &Max, const auto &I) {
2837 return I.Version > Max.Version;
2838 });
2839
2840 // FIXME Start selecting installation with libstdc++ in clang 22,
2841 // using the current way of selecting the installation as a fallback
2842 // only. For now, warn if the installation with libstdc++ differs
2843 // from SelectedInstallation.
2844 const GCCInstallCandidate *InstallWithIncludes = nullptr;
2845 for (const auto &I : Installations) {
2846 if ((!InstallWithIncludes || I.Version > InstallWithIncludes->Version) &&
2847 GCCInstallationHasLibStdcxxIncludePaths(GCCInstallation: I, DriverArgs: Args))
2848 InstallWithIncludes = &I;
2849 }
2850
2851 if (InstallWithIncludes && SelectedInstallation.GCCInstallPath !=
2852 InstallWithIncludes->GCCInstallPath)
2853 D.Diag(DiagID: diag::warn_drv_gcc_install_dir_libstdcxx)
2854 << InstallWithIncludes->GCCInstallPath
2855 << SelectedInstallation.GCCInstallPath;
2856
2857 // TODO Warn if SelectedInstallation does not contain libstdc++ includes
2858 // although compiler flags indicate that it is required (C++ compilation,
2859 // libstdc++ not explicitly disabled).
2860
2861 return true;
2862}
2863
2864void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2865 const llvm::Triple &TargetTriple, const ArgList &Args,
2866 const std::string &LibDir, StringRef CandidateTriple,
2867 bool NeedsBiarchSuffix, bool GCCDirExists, bool GCCCrossDirExists) {
2868 // Locations relative to the system lib directory where GCC's triple-specific
2869 // directories might reside.
2870 struct GCCLibSuffix {
2871 // Path from system lib directory to GCC triple-specific directory.
2872 std::string LibSuffix;
2873 // Path from GCC triple-specific directory back to system lib directory.
2874 // This is one '..' component per component in LibSuffix.
2875 StringRef ReversePath;
2876 // Whether this library suffix is relevant for the triple.
2877 bool Active;
2878 } Suffixes[] = {
2879 // This is the normal place.
2880 {.LibSuffix: "gcc/" + CandidateTriple.str(), .ReversePath: "../..", .Active: GCCDirExists},
2881
2882 // Debian puts cross-compilers in gcc-cross.
2883 {.LibSuffix: "gcc-cross/" + CandidateTriple.str(), .ReversePath: "../..", .Active: GCCCrossDirExists},
2884
2885 // The Freescale PPC SDK has the gcc libraries in
2886 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2887 // this on Freescale triples, though, since some systems put a *lot* of
2888 // files in that location, not just GCC installation data.
2889 {.LibSuffix: CandidateTriple.str(), .ReversePath: "..",
2890 .Active: TargetTriple.getVendor() == llvm::Triple::Freescale ||
2891 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}};
2892
2893 SmallVector<GCCInstallCandidate, 3> Installations;
2894 for (auto &Suffix : Suffixes) {
2895 if (!Suffix.Active)
2896 continue;
2897
2898 StringRef LibSuffix = Suffix.LibSuffix;
2899 std::error_code EC;
2900 for (llvm::vfs::directory_iterator
2901 LI = D.getVFS().dir_begin(Dir: LibDir + "/" + LibSuffix, EC),
2902 LE;
2903 !EC && LI != LE; LI = LI.increment(EC)) {
2904 StringRef VersionText = llvm::sys::path::filename(path: LI->path());
2905 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2906 if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2907 if (!CandidateGCCInstallPaths.insert(x: std::string(LI->path())).second)
2908 continue; // Saw this path before; no need to look at it again.
2909 if (CandidateVersion.isOlderThan(RHSMajor: 4, RHSMinor: 1, RHSPatch: 1))
2910 continue;
2911 if (CandidateVersion <= SelectedInstallation.Version && IsValid)
2912 continue;
2913
2914 if (!ScanGCCForMultilibs(TargetTriple, Args, Path: LI->path(),
2915 NeedsBiarchSuffix))
2916 continue;
2917
2918 GCCInstallCandidate Installation;
2919 Installation.Version = CandidateVersion;
2920 Installation.GCCTriple.setTriple(CandidateTriple);
2921 // FIXME: We hack together the directory name here instead of
2922 // using LI to ensure stable path separators across Windows and
2923 // Linux.
2924 Installation.GCCInstallPath =
2925 (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2926 Installation.GCCParentLibPath =
2927 (Installation.GCCInstallPath + "/../" + Suffix.ReversePath).str();
2928 Installation.SelectedMultilib = getMultilib();
2929
2930 Installations.push_back(Elt: Installation);
2931 }
2932 }
2933
2934 IsValid |=
2935 SelectGCCInstallationDirectory(Installations, Args, SelectedInstallation);
2936}
2937
2938bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs(
2939 const llvm::Triple &TargetTriple, const ArgList &Args,
2940 const SmallVectorImpl<StringRef> &CandidateTriples,
2941 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) {
2942 if (!D.getVFS().exists(Path: concat(Path: D.SysRoot, A: GentooConfigDir)))
2943 return false;
2944
2945 for (StringRef CandidateTriple : CandidateTriples) {
2946 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
2947 return true;
2948 }
2949
2950 for (StringRef CandidateTriple : CandidateBiarchTriples) {
2951 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, NeedsBiarchSuffix: true))
2952 return true;
2953 }
2954 return false;
2955}
2956
2957bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2958 const llvm::Triple &TargetTriple, const ArgList &Args,
2959 StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2960 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2961 D.getVFS().getBufferForFile(Name: concat(Path: D.SysRoot, A: GentooConfigDir,
2962 B: "/config-" + CandidateTriple.str()));
2963 if (File) {
2964 SmallVector<StringRef, 2> Lines;
2965 File.get()->getBuffer().split(A&: Lines, Separator: "\n");
2966 for (StringRef Line : Lines) {
2967 Line = Line.trim();
2968 // CURRENT=triple-version
2969 if (!Line.consume_front(Prefix: "CURRENT="))
2970 continue;
2971 // Process the config file pointed to by CURRENT.
2972 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile =
2973 D.getVFS().getBufferForFile(
2974 Name: concat(Path: D.SysRoot, A: GentooConfigDir, B: "/" + Line));
2975 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit(Separator: '-');
2976 // List of paths to scan for libraries.
2977 SmallVector<StringRef, 4> GentooScanPaths;
2978 // Scan the Config file to find installed GCC libraries path.
2979 // Typical content of the GCC config file:
2980 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/
2981 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32"
2982 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man"
2983 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info"
2984 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4"
2985 // We are looking for the paths listed in LDPATH=... .
2986 if (ConfigFile) {
2987 SmallVector<StringRef, 2> ConfigLines;
2988 ConfigFile.get()->getBuffer().split(A&: ConfigLines, Separator: "\n");
2989 for (StringRef ConfLine : ConfigLines) {
2990 ConfLine = ConfLine.trim();
2991 if (ConfLine.consume_front(Prefix: "LDPATH=")) {
2992 // Drop '"' from front and back if present.
2993 ConfLine.consume_back(Suffix: "\"");
2994 ConfLine.consume_front(Prefix: "\"");
2995 // Get all paths sperated by ':'
2996 ConfLine.split(A&: GentooScanPaths, Separator: ':', MaxSplit: -1, /*AllowEmpty*/ KeepEmpty: false);
2997 }
2998 }
2999 }
3000 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}.
3001 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/"
3002 + ActiveVersion.second.str();
3003 GentooScanPaths.push_back(Elt: StringRef(basePath));
3004
3005 // Scan all paths for GCC libraries.
3006 for (const auto &GentooScanPath : GentooScanPaths) {
3007 std::string GentooPath = concat(Path: D.SysRoot, A: GentooScanPath);
3008 if (D.getVFS().exists(Path: GentooPath + "/crtbegin.o")) {
3009 if (!ScanGCCForMultilibs(TargetTriple, Args, Path: GentooPath,
3010 NeedsBiarchSuffix))
3011 continue;
3012
3013 SelectedInstallation.Version =
3014 GCCVersion::Parse(VersionText: ActiveVersion.second);
3015 SelectedInstallation.GCCInstallPath = GentooPath;
3016 SelectedInstallation.GCCParentLibPath =
3017 GentooPath + std::string("/../../..");
3018 SelectedInstallation.GCCTriple.setTriple(ActiveVersion.first);
3019 IsValid = true;
3020 return true;
3021 }
3022 }
3023 }
3024 }
3025
3026 return false;
3027}
3028
3029Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
3030 const ArgList &Args)
3031 : ToolChain(D, Triple, Args), GCCInstallation(D),
3032 CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args),
3033 SYCLInstallation(D, Triple, Args) {
3034 getProgramPaths().push_back(Elt: getDriver().Dir);
3035}
3036
3037Generic_GCC::~Generic_GCC() {}
3038
3039Tool *Generic_GCC::getTool(Action::ActionClass AC) const {
3040 switch (AC) {
3041 case Action::PreprocessJobClass:
3042 if (!Preprocess)
3043 Preprocess.reset(p: new clang::driver::tools::gcc::Preprocessor(*this));
3044 return Preprocess.get();
3045 case Action::CompileJobClass:
3046 if (!Compile)
3047 Compile.reset(p: new tools::gcc::Compiler(*this));
3048 return Compile.get();
3049 default:
3050 return ToolChain::getTool(AC);
3051 }
3052}
3053
3054Tool *Generic_GCC::buildAssembler() const {
3055 return new tools::gnutools::Assembler(*this);
3056}
3057
3058Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
3059
3060void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
3061 // Print the information about how we detected the GCC installation.
3062 GCCInstallation.print(OS);
3063 CudaInstallation->print(OS);
3064 RocmInstallation->print(OS);
3065}
3066
3067ToolChain::UnwindTableLevel
3068Generic_GCC::getDefaultUnwindTableLevel(const ArgList &Args) const {
3069 switch (getArch()) {
3070 case llvm::Triple::aarch64:
3071 case llvm::Triple::aarch64_be:
3072 case llvm::Triple::amdgpu:
3073 case llvm::Triple::ppc:
3074 case llvm::Triple::ppcle:
3075 case llvm::Triple::ppc64:
3076 case llvm::Triple::ppc64le:
3077 case llvm::Triple::riscv32:
3078 case llvm::Triple::riscv64:
3079 case llvm::Triple::riscv32be:
3080 case llvm::Triple::riscv64be:
3081 case llvm::Triple::x86:
3082 case llvm::Triple::x86_64:
3083 return UnwindTableLevel::Asynchronous;
3084 default:
3085 return UnwindTableLevel::None;
3086 }
3087}
3088
3089bool Generic_GCC::isPICDefault() const {
3090 switch (getArch()) {
3091 case llvm::Triple::x86_64:
3092 return getTriple().isOSWindows();
3093 case llvm::Triple::mips64:
3094 case llvm::Triple::mips64el:
3095 return true;
3096 default:
3097 return false;
3098 }
3099}
3100
3101bool Generic_GCC::isPIEDefault(const llvm::opt::ArgList &Args) const {
3102 return false;
3103}
3104
3105bool Generic_GCC::isPICDefaultForced() const {
3106 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
3107}
3108
3109bool Generic_GCC::IsIntegratedAssemblerDefault() const {
3110 switch (getTriple().getArch()) {
3111 case llvm::Triple::nvptx:
3112 case llvm::Triple::nvptx64:
3113 case llvm::Triple::xcore:
3114 return false;
3115 default:
3116 return true;
3117 }
3118}
3119
3120void Generic_GCC::PushPPaths(ToolChain::path_list &PPaths) {
3121 // Cross-compiling binutils and GCC installations (vanilla and openSUSE at
3122 // least) put various tools in a triple-prefixed directory off of the parent
3123 // of the GCC installation. We use the GCC triple here to ensure that we end
3124 // up with tools that support the same amount of cross compiling as the
3125 // detected GCC installation. For example, if we find a GCC installation
3126 // targeting x86_64, but it is a bi-arch GCC installation, it can also be
3127 // used to target i386.
3128 if (GCCInstallation.isValid()) {
3129 PPaths.push_back(Elt: Twine(GCCInstallation.getParentLibPath() + "/../" +
3130 GCCInstallation.getTriple().str() + "/bin")
3131 .str());
3132 }
3133}
3134
3135void Generic_GCC::AddMultilibPaths(const Driver &D,
3136 const std::string &SysRoot,
3137 const std::string &OSLibDir,
3138 const std::string &MultiarchTriple,
3139 path_list &Paths) {
3140 // Add the multilib suffixed paths where they are available.
3141 if (GCCInstallation.isValid()) {
3142 const Multilib &GCCMultilib = GCCInstallation.getMultilib();
3143 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3144 const std::string &LibPath =
3145 std::string(GCCInstallation.getParentLibPath());
3146
3147 // Sourcery CodeBench MIPS toolchain holds some libraries under
3148 // a biarch-like suffix of the GCC installation.
3149 if (const auto &PathsCallback =
3150 GCCInstallation.getMultilibs().filePathsCallback())
3151 for (const auto &Path : PathsCallback(GCCMultilib))
3152 addPathIfExists(D, Path: GCCInstallation.getInstallPath() + Path, Paths);
3153
3154 // Add lib/gcc/$triple/$version, with an optional /multilib suffix.
3155 addPathIfExists(
3156 D, Path: GCCInstallation.getInstallPath() + GCCMultilib.gccSuffix(), Paths);
3157
3158 // Add lib/gcc/$triple/$libdir
3159 // For GCC built with --enable-version-specific-runtime-libs.
3160 addPathIfExists(D, Path: GCCInstallation.getInstallPath() + "/../" + OSLibDir,
3161 Paths);
3162
3163 // GCC cross compiling toolchains will install target libraries which ship
3164 // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as
3165 // any part of the GCC installation in
3166 // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat
3167 // debatable, but is the reality today. We need to search this tree even
3168 // when we have a sysroot somewhere else. It is the responsibility of
3169 // whomever is doing the cross build targeting a sysroot using a GCC
3170 // installation that is *not* within the system root to ensure two things:
3171 //
3172 // 1) Any DSOs that are linked in from this tree or from the install path
3173 // above must be present on the system root and found via an
3174 // appropriate rpath.
3175 // 2) There must not be libraries installed into
3176 // <prefix>/<triple>/<libdir> unless they should be preferred over
3177 // those within the system root.
3178 //
3179 // Note that this matches the GCC behavior. See the below comment for where
3180 // Clang diverges from GCC's behavior.
3181 addPathIfExists(D,
3182 Path: LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir +
3183 GCCMultilib.osSuffix(),
3184 Paths);
3185
3186 // If the GCC installation we found is inside of the sysroot, we want to
3187 // prefer libraries installed in the parent prefix of the GCC installation.
3188 // It is important to *not* use these paths when the GCC installation is
3189 // outside of the system root as that can pick up unintended libraries.
3190 // This usually happens when there is an external cross compiler on the
3191 // host system, and a more minimal sysroot available that is the target of
3192 // the cross. Note that GCC does include some of these directories in some
3193 // configurations but this seems somewhere between questionable and simply
3194 // a bug.
3195 if (StringRef(LibPath).starts_with(Prefix: SysRoot))
3196 addPathIfExists(D, Path: LibPath + "/../" + OSLibDir, Paths);
3197 }
3198}
3199
3200void Generic_GCC::AddMultiarchPaths(const Driver &D,
3201 const std::string &SysRoot,
3202 const std::string &OSLibDir,
3203 path_list &Paths) {
3204 if (GCCInstallation.isValid()) {
3205 const std::string &LibPath =
3206 std::string(GCCInstallation.getParentLibPath());
3207 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3208 const Multilib &Multilib = GCCInstallation.getMultilib();
3209 addPathIfExists(
3210 D, Path: LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(),
3211 Paths);
3212 }
3213}
3214
3215void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs,
3216 ArgStringList &CC1Args) const {
3217 // Add include directories specific to the selected multilib set and multilib.
3218 if (!GCCInstallation.isValid())
3219 return;
3220 // gcc TOOL_INCLUDE_DIR.
3221 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3222 std::string LibPath(GCCInstallation.getParentLibPath());
3223 ToolChain::addSystemInclude(DriverArgs, CC1Args,
3224 Path: Twine(LibPath) + "/../" + GCCTriple.str() +
3225 "/include");
3226
3227 const auto &Callback = GCCInstallation.getMultilibs().includeDirsCallback();
3228 if (Callback) {
3229 for (const auto &Path : Callback(GCCInstallation.getMultilib()))
3230 addExternCSystemIncludeIfExists(DriverArgs, CC1Args,
3231 Path: GCCInstallation.getInstallPath() + Path);
3232 }
3233}
3234
3235void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
3236 ArgStringList &CC1Args) const {
3237 if (DriverArgs.hasArg(Ids: options::OPT_nostdinc, Ids: options::OPT_nostdincxx,
3238 Ids: options::OPT_nostdlibinc))
3239 return;
3240
3241 switch (GetCXXStdlibType(Args: DriverArgs)) {
3242 case ToolChain::CST_Libcxx:
3243 addLibCxxIncludePaths(DriverArgs, CC1Args);
3244 break;
3245
3246 case ToolChain::CST_Libstdcxx:
3247 addLibStdCxxIncludePaths(DriverArgs, CC1Args);
3248 break;
3249 }
3250}
3251
3252void Generic_GCC::addSYCLIncludeArgs(const ArgList &DriverArgs,
3253 ArgStringList &CC1Args) const {
3254 SYCLInstallation->addSYCLIncludeArgs(DriverArgs, CC1Args);
3255}
3256
3257void
3258Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3259 llvm::opt::ArgStringList &CC1Args) const {
3260 const Driver &D = getDriver();
3261 std::string SysRoot = computeSysRoot();
3262 if (SysRoot.empty())
3263 SysRoot = llvm::sys::path::get_separator();
3264
3265 auto AddIncludePath = [&](StringRef Path, bool TargetDirRequired = false) {
3266 std::string Version = detectLibcxxVersion(IncludePath: Path);
3267 if (Version.empty())
3268 return false;
3269
3270 // First add the per-target include path if it exists.
3271 bool TargetDirExists = false;
3272 std::optional<std::string> TargetIncludeDir = getTargetSubDirPath(BaseDir: Path);
3273 if (TargetIncludeDir) {
3274 SmallString<128> TargetDir(*TargetIncludeDir);
3275 llvm::sys::path::append(path&: TargetDir, a: "c++", b: Version);
3276 if (D.getVFS().exists(Path: TargetDir)) {
3277 addSystemInclude(DriverArgs, CC1Args, Path: TargetDir);
3278 TargetDirExists = true;
3279 }
3280 }
3281 if (TargetDirRequired && !TargetDirExists)
3282 return false;
3283
3284 // Second add the generic one.
3285 SmallString<128> GenericDir(Path);
3286 llvm::sys::path::append(path&: GenericDir, a: "c++", b: Version);
3287 addSystemInclude(DriverArgs, CC1Args, Path: GenericDir);
3288 return true;
3289 };
3290
3291 // Android only uses the libc++ headers installed alongside the toolchain if
3292 // they contain an Android-specific target include path, otherwise they're
3293 // incompatible with the NDK libraries.
3294 SmallString<128> DriverIncludeDir(getDriver().Dir);
3295 llvm::sys::path::append(path&: DriverIncludeDir, a: "..", b: "include");
3296 if (AddIncludePath(DriverIncludeDir,
3297 /*TargetDirRequired=*/getTriple().isAndroid()))
3298 return;
3299 // If this is a development, non-installed, clang, libcxx will
3300 // not be found at ../include/c++ but it likely to be found at
3301 // one of the following two locations:
3302 SmallString<128> UsrLocalIncludeDir(SysRoot);
3303 llvm::sys::path::append(path&: UsrLocalIncludeDir, a: "usr", b: "local", c: "include");
3304 if (AddIncludePath(UsrLocalIncludeDir))
3305 return;
3306 SmallString<128> UsrIncludeDir(SysRoot);
3307 llvm::sys::path::append(path&: UsrIncludeDir, a: "usr", b: "include");
3308 if (AddIncludePath(UsrIncludeDir))
3309 return;
3310}
3311
3312static bool addLibStdCXXIncludePaths(llvm::vfs::FileSystem &vfs,
3313 Twine IncludeDir, StringRef Triple,
3314 Twine IncludeSuffix,
3315 const llvm::opt::ArgList &DriverArgs,
3316 llvm::opt::ArgStringList &CC1Args,
3317 bool DetectDebian = false) {
3318
3319 if (!vfs.exists(Path: IncludeDir))
3320 return false;
3321
3322 // Debian native gcc uses g++-multiarch-incdir.diff which uses
3323 // include/x86_64-linux-gnu/c++/10$IncludeSuffix instead of
3324 // include/c++/10/x86_64-linux-gnu$IncludeSuffix.
3325 std::string Dir = IncludeDir.str();
3326 StringRef Include =
3327 llvm::sys::path::parent_path(path: llvm::sys::path::parent_path(path: Dir));
3328 std::string Path =
3329 (Include + "/" + Triple + Dir.substr(pos: Include.size()) + IncludeSuffix)
3330 .str();
3331 if (DetectDebian && !vfs.exists(Path))
3332 return false;
3333
3334 // GPLUSPLUS_INCLUDE_DIR
3335 ToolChain::addSystemInclude(DriverArgs, CC1Args, Path: IncludeDir);
3336 // GPLUSPLUS_TOOL_INCLUDE_DIR. If Triple is not empty, add a target-dependent
3337 // include directory.
3338 if (DetectDebian)
3339 ToolChain::addSystemInclude(DriverArgs, CC1Args, Path);
3340 else if (!Triple.empty())
3341 ToolChain::addSystemInclude(DriverArgs, CC1Args,
3342 Path: IncludeDir + "/" + Triple + IncludeSuffix);
3343 // GPLUSPLUS_BACKWARD_INCLUDE_DIR
3344 ToolChain::addSystemInclude(DriverArgs, CC1Args, Path: IncludeDir + "/backward");
3345 return true;
3346}
3347
3348bool Generic_GCC::addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple,
3349 Twine IncludeSuffix,
3350 const llvm::opt::ArgList &DriverArgs,
3351 llvm::opt::ArgStringList &CC1Args,
3352 bool DetectDebian) const {
3353 return ::addLibStdCXXIncludePaths(vfs&: getVFS(), IncludeDir, Triple, IncludeSuffix,
3354 DriverArgs, CC1Args, DetectDebian);
3355}
3356
3357bool Generic_GCC::GCCInstallCandidate::addGCCLibStdCxxIncludePaths(
3358 llvm::vfs::FileSystem &vfs, const llvm::opt::ArgList &DriverArgs,
3359 llvm::opt::ArgStringList &CC1Args, StringRef DebianMultiarch) const {
3360
3361 // By default, look for the C++ headers in an include directory adjacent to
3362 // the lib directory of the GCC installation. Note that this is expect to be
3363 // equivalent to '/usr/include/c++/X.Y' in almost all cases.
3364 StringRef LibDir = getParentLibPath();
3365 StringRef InstallDir = getInstallPath();
3366 StringRef TripleStr = getTriple().str();
3367 const Multilib &Multilib = getMultilib();
3368 const GCCVersion &Version = getVersion();
3369
3370 // Try /../$triple/include/c++/$version (gcc --print-multiarch is not empty).
3371 if (::addLibStdCXXIncludePaths(
3372 vfs,
3373 IncludeDir: LibDir.str() + "/../" + TripleStr + "/include/c++/" + Version.Text,
3374 Triple: TripleStr, IncludeSuffix: Multilib.includeSuffix(), DriverArgs, CC1Args))
3375 return true;
3376
3377 // Try /gcc/$triple/$version/include/c++/ (gcc --print-multiarch is not
3378 // empty). Like above but for GCC built with
3379 // --enable-version-specific-runtime-libs.
3380 if (::addLibStdCXXIncludePaths(vfs,
3381 IncludeDir: LibDir.str() + "/gcc/" + TripleStr + "/" +
3382 Version.Text + "/include/c++/",
3383 Triple: TripleStr, IncludeSuffix: Multilib.includeSuffix(),
3384 DriverArgs, CC1Args))
3385 return true;
3386
3387 // Detect Debian g++-multiarch-incdir.diff.
3388 if (::addLibStdCXXIncludePaths(
3389 vfs, IncludeDir: LibDir.str() + "/../include/c++/" + Version.Text,
3390 Triple: DebianMultiarch, IncludeSuffix: Multilib.includeSuffix(), DriverArgs, CC1Args,
3391 /*Debian=*/DetectDebian: true))
3392 return true;
3393
3394 // Try /../include/c++/$version (gcc --print-multiarch is empty).
3395 if (::addLibStdCXXIncludePaths(
3396 vfs, IncludeDir: LibDir.str() + "/../include/c++/" + Version.Text, Triple: TripleStr,
3397 IncludeSuffix: Multilib.includeSuffix(), DriverArgs, CC1Args))
3398 return true;
3399
3400 // Otherwise, fall back on a bunch of options which don't use multiarch
3401 // layouts for simplicity.
3402 const std::string LibStdCXXIncludePathCandidates[] = {
3403 // Gentoo is weird and places its headers inside the GCC install,
3404 // so if the first attempt to find the headers fails, try these patterns.
3405 InstallDir.str() + "/include/g++-v" + Version.Text,
3406 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." +
3407 Version.MinorStr,
3408 InstallDir.str() + "/include/g++-v" + Version.MajorStr,
3409 };
3410
3411 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) {
3412 if (::addLibStdCXXIncludePaths(vfs, IncludeDir: IncludePath, Triple: TripleStr,
3413 IncludeSuffix: Multilib.includeSuffix(), DriverArgs,
3414 CC1Args))
3415 return true;
3416 }
3417 return false;
3418}
3419
3420bool Generic_GCC::GCCInstallationDetector::
3421 GCCInstallationHasLibStdcxxIncludePaths(
3422 const GCCInstallCandidate &GCCInstallation,
3423 const llvm::opt::ArgList &DriverArgs) const {
3424 StringRef DebianMultiarch =
3425 TripleToDebianMultiarch(GCCInstallation.getTriple());
3426
3427 // The following function checks for libstdc++ include paths and
3428 // adds them to the provided argument list. Here we just need the
3429 // check.
3430 llvm::opt::ArgStringList dummyCC1Args;
3431 return GCCInstallation.addGCCLibStdCxxIncludePaths(
3432 vfs&: D.getVFS(), DriverArgs, CC1Args&: dummyCC1Args, DebianMultiarch);
3433}
3434
3435bool Generic_GCC::addGCCLibStdCxxIncludePaths(
3436 const llvm::opt::ArgList &DriverArgs,
3437 llvm::opt::ArgStringList &CC1Args) const {
3438 assert(GCCInstallation.isValid());
3439
3440 // Detect Debian g++-multiarch-incdir.diff.
3441 StringRef DebianMultiarch =
3442 GCCInstallation.TripleToDebianMultiarch(GCCInstallation.getTriple());
3443
3444 return GCCInstallation.getSelectedInstallation().addGCCLibStdCxxIncludePaths(
3445 vfs&: getVFS(), DriverArgs, CC1Args, DebianMultiarch);
3446}
3447
3448void
3449Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3450 llvm::opt::ArgStringList &CC1Args) const {
3451 if (!GCCInstallation.isValid())
3452 return;
3453
3454 GCCInstallation.getSelectedInstallation().addGCCLibStdCxxIncludePaths(
3455 vfs&: getVFS(), DriverArgs, CC1Args, DebianMultiarch: GCCInstallation.getTriple().str());
3456}
3457
3458llvm::opt::DerivedArgList *
3459Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, BoundArch BA,
3460 Action::OffloadKind DeviceOffloadKind) const {
3461 if (DeviceOffloadKind == Action::OFK_None ||
3462 DeviceOffloadKind == Action::OFK_Host)
3463 return nullptr;
3464
3465 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
3466
3467 // Filter all the arguments we don't care passing to the offloading
3468 // toolchain as they can mess up with the creation of a shared library.
3469 const llvm::DenseSet<unsigned> OpenMPFiltered{
3470 options::OPT_shared, options::OPT_dynamic, options::OPT_static,
3471 options::OPT_fPIE, options::OPT_fno_PIE, options::OPT_fpie,
3472 options::OPT_fno_pie};
3473 for (auto *A : Args)
3474 if (DeviceOffloadKind != Action::OFK_OpenMP ||
3475 !OpenMPFiltered.contains(V: A->getOption().getID()))
3476 DAL->append(A);
3477
3478 // Request a shared library for CPU offloading. Given that these options
3479 // are decided implicitly, they do not refer to any base argument.
3480 const OptTable &Opts = getDriver().getOpts();
3481 if (DeviceOffloadKind == Action::OFK_OpenMP) {
3482 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opt: Opts.getOption(Opt: options::OPT_shared));
3483 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opt: Opts.getOption(Opt: options::OPT_fPIC));
3484 }
3485
3486 // Add the bound architecture to the arguments list if present.
3487 if (!BA.empty()) {
3488 options::ID Opt = getTriple().isARM() || getTriple().isPPC() ||
3489 getTriple().isAArch64() || getTriple().isAMDGPU()
3490 ? options::OPT_mcpu_EQ
3491 : options::OPT_march_EQ;
3492 DAL->eraseArg(Id: Opt);
3493 DAL->AddJoinedArg(BaseArg: nullptr, Opt: Opts.getOption(Opt), Value: BA.ArchName);
3494 }
3495
3496 return DAL;
3497}
3498
3499void Generic_ELF::anchor() {}
3500
3501void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
3502 ArgStringList &CC1Args, BoundArch BA,
3503 Action::OffloadKind) const {
3504 if (!DriverArgs.hasFlag(Pos: options::OPT_fuse_init_array,
3505 Neg: options::OPT_fno_use_init_array, Default: true))
3506 CC1Args.push_back(Elt: "-fno-use-init-array");
3507}
3508