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 CmdArgs.push_back(Elt: Output.getFilename());
248
249 for (const auto &II : Inputs) {
250 if (II.isFilename()) {
251 CmdArgs.push_back(Elt: II.getFilename());
252 }
253 }
254
255 // Delete old output archive file if it already exists before generating a new
256 // archive file.
257 auto OutputFileName = Output.getFilename();
258 if (Output.isFilename() && llvm::sys::fs::exists(Path: OutputFileName)) {
259 if (std::error_code EC = llvm::sys::fs::remove(path: OutputFileName)) {
260 D.Diag(DiagID: diag::err_drv_unable_to_remove_file) << EC.message();
261 return;
262 }
263 }
264
265 const char *Exec = Args.MakeArgString(Str: getToolChain().GetStaticLibToolPath());
266 C.addCommand(Cmd: std::make_unique<Command>(args: JA, args: *this,
267 args: ResponseFileSupport::AtFileCurCP(),
268 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
269}
270
271void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
272 const InputInfo &Output,
273 const InputInfoList &Inputs,
274 const ArgList &Args,
275 const char *LinkingOutput) const {
276 // FIXME: The Linker class constructor takes a ToolChain and not a
277 // Generic_ELF, so the static_cast might return a reference to a invalid
278 // instance (see PR45061). Ideally, the Linker constructor needs to take a
279 // Generic_ELF instead.
280 const auto &ToolChain = static_cast<const Generic_ELF &>(getToolChain());
281 const Driver &D = ToolChain.getDriver();
282
283 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
284
285 const llvm::Triple::ArchType Arch = ToolChain.getArch();
286 const bool isOHOSFamily = ToolChain.getTriple().isOHOSFamily();
287 const bool isAndroid = ToolChain.getTriple().isAndroid();
288 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
289 const bool IsVE = ToolChain.getTriple().isVE();
290 const bool IsStaticPIE = getStaticPIE(Args, TC: ToolChain);
291 const bool IsStatic = getStatic(Args);
292 const bool HasCRTBeginEndFiles =
293 ToolChain.getTriple().hasEnvironment() ||
294 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
295
296 ArgStringList CmdArgs;
297
298 // Silence warning for "clang -g foo.o -o foo"
299 Args.ClaimAllArgs(Id0: options::OPT_g_Group);
300 // and "clang -emit-llvm foo.o -o foo"
301 Args.ClaimAllArgs(Id0: options::OPT_emit_llvm);
302 // and for "clang -w foo.o -o foo". Other warning options are already
303 // handled somewhere else.
304 Args.ClaimAllArgs(Id0: options::OPT_w);
305
306 if (!D.SysRoot.empty())
307 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "--sysroot=" + D.SysRoot));
308
309 if (Triple.isARM() || Triple.isThumb()) {
310 bool IsBigEndian = arm::isARMBigEndian(Triple, Args);
311 if (IsBigEndian)
312 arm::appendBE8LinkFlag(Args, CmdArgs, Triple);
313 CmdArgs.push_back(Elt: IsBigEndian ? "-EB" : "-EL");
314 } else if (Triple.isAArch64()) {
315 CmdArgs.push_back(Elt: Arch == llvm::Triple::aarch64_be ? "-EB" : "-EL");
316 }
317
318 // Most Android ARM64 targets should enable the linker fix for erratum
319 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
320 if (Arch == llvm::Triple::aarch64 && (isAndroid || isOHOSFamily) &&
321 Args.hasFlag(Pos: options::OPT_mfix_cortex_a53_843419,
322 Neg: options::OPT_mno_fix_cortex_a53_843419, Default: true)) {
323 std::string CPU = getCPUName(D, Args, T: Triple);
324 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
325 CmdArgs.push_back(Elt: "--fix-cortex-a53-843419");
326 }
327
328 ToolChain.addExtraOpts(CmdArgs);
329
330 CmdArgs.push_back(Elt: "--eh-frame-hdr");
331
332 if (const char *LDMOption = getLDMOption(T: ToolChain.getTriple(), Args)) {
333 CmdArgs.push_back(Elt: "-m");
334 CmdArgs.push_back(Elt: LDMOption);
335 } else {
336 D.Diag(DiagID: diag::err_target_unknown_triple) << Triple.str();
337 return;
338 }
339
340 if (Triple.isLoongArch() || Triple.isRISCV()) {
341 CmdArgs.push_back(Elt: "-X");
342 if (Args.hasArg(Ids: options::OPT_mno_relax))
343 CmdArgs.push_back(Elt: "--no-relax");
344 }
345
346 const bool IsShared = Args.hasArg(Ids: options::OPT_shared);
347 if (IsShared)
348 CmdArgs.push_back(Elt: "-shared");
349 bool IsPIE = false;
350 if (IsStaticPIE) {
351 CmdArgs.push_back(Elt: "-static");
352 CmdArgs.push_back(Elt: "-pie");
353 CmdArgs.push_back(Elt: "--no-dynamic-linker");
354 CmdArgs.push_back(Elt: "-z");
355 CmdArgs.push_back(Elt: "text");
356 } else if (IsStatic) {
357 CmdArgs.push_back(Elt: "-static");
358 } else if (!Args.hasArg(Ids: options::OPT_r)) {
359 if (Args.hasArg(Ids: options::OPT_rdynamic))
360 CmdArgs.push_back(Elt: "-export-dynamic");
361 if (!IsShared) {
362 IsPIE = Args.hasFlag(Pos: options::OPT_pie, Neg: options::OPT_no_pie,
363 Default: ToolChain.isPIEDefault(Args));
364 if (IsPIE)
365 CmdArgs.push_back(Elt: "-pie");
366 CmdArgs.push_back(Elt: "-dynamic-linker");
367 CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine(D.DyldPrefix) +
368 ToolChain.getDynamicLinker(Args)));
369 }
370 }
371
372 CmdArgs.push_back(Elt: "-o");
373 CmdArgs.push_back(Elt: Output.getFilename());
374
375 Args.addAllArgs(Output&: CmdArgs, Ids: {options::OPT_s, options::OPT_t, options::OPT_u});
376
377 if (!Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nostartfiles,
378 Ids: options::OPT_r)) {
379 if (!isAndroid && !IsIAMCU) {
380 const char *crt1 = nullptr;
381 if (!Args.hasArg(Ids: options::OPT_shared)) {
382 if (Args.hasArg(Ids: options::OPT_pg))
383 crt1 = "gcrt1.o";
384 else if (IsPIE)
385 crt1 = "Scrt1.o";
386 else if (IsStaticPIE)
387 crt1 = "rcrt1.o";
388 else
389 crt1 = "crt1.o";
390 }
391 if (crt1)
392 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: crt1)));
393
394 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crti.o")));
395 }
396
397 if (IsVE) {
398 CmdArgs.push_back(Elt: "-z");
399 CmdArgs.push_back(Elt: "max-page-size=0x4000000");
400 }
401
402 if (IsIAMCU)
403 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crt0.o")));
404 else if (HasCRTBeginEndFiles) {
405 std::string P;
406 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
407 !isAndroid) {
408 std::string crtbegin = ToolChain.getCompilerRT(Args, Component: "crtbegin",
409 Type: ToolChain::FT_Object);
410 if (ToolChain.getVFS().exists(Path: crtbegin))
411 P = crtbegin;
412 }
413 if (P.empty()) {
414 const char *crtbegin;
415 if (Args.hasArg(Ids: options::OPT_shared))
416 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
417 else if (IsStatic)
418 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
419 else if (IsPIE || IsStaticPIE)
420 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
421 else
422 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
423 P = ToolChain.GetFilePath(Name: crtbegin);
424 }
425 CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
426 }
427
428 // Add crtfastmath.o if available and fast math is enabled.
429 ToolChain.addFastMathRuntimeIfAvailable(Args, CmdArgs);
430
431 if (isAndroid && Args.hasFlag(Pos: options::OPT_fandroid_pad_segment,
432 Neg: options::OPT_fno_android_pad_segment, Default: false))
433 CmdArgs.push_back(
434 Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crt_pad_segment.o")));
435 }
436
437 Args.addAllArgs(Output&: CmdArgs, Ids: {options::OPT_L});
438
439 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
440
441 if (auto LTO = ToolChain.getLTOMode(Args); LTO != LTOK_None)
442 addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs, IsThinLTO: LTO == LTOK_Thin);
443
444 if (Args.hasArg(Ids: options::OPT_Z_Xlinker__no_demangle))
445 CmdArgs.push_back(Elt: "--no-demangle");
446
447 bool NeedsSanitizerDeps = addSanitizerRuntimes(TC: ToolChain, Args, CmdArgs);
448 bool NeedsXRayDeps = addXRayRuntime(TC: ToolChain, Args, CmdArgs);
449 addLinkerCompressDebugSectionsOption(TC: ToolChain, Args, CmdArgs);
450 AddLinkerInputs(TC: ToolChain, Inputs, Args, CmdArgs, JA);
451
452 ToolChain.addOffloadRTLibs(ActiveKinds: C.getActiveOffloadKinds(), Args, CmdArgs);
453
454 // The profile runtime also needs access to system libraries.
455 getToolChain().addProfileRTLibs(Args, CmdArgs);
456
457 if (D.CCCIsCXX() &&
458 !Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nodefaultlibs,
459 Ids: options::OPT_r)) {
460 if (ToolChain.ShouldLinkCXXStdlib(Args)) {
461 bool OnlyLibstdcxxStatic = Args.hasArg(Ids: options::OPT_static_libstdcxx) &&
462 !Args.hasArg(Ids: options::OPT_static);
463 if (OnlyLibstdcxxStatic)
464 CmdArgs.push_back(Elt: "-Bstatic");
465 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
466 if (OnlyLibstdcxxStatic)
467 CmdArgs.push_back(Elt: "-Bdynamic");
468 }
469 CmdArgs.push_back(Elt: "-lm");
470 }
471
472 // Silence warnings when linking C code with a C++ '-stdlib' argument.
473 Args.ClaimAllArgs(Id0: options::OPT_stdlib_EQ);
474
475 // Additional linker set-up and flags for Fortran. This is required in order
476 // to generate executables. As Fortran runtime depends on the C runtime,
477 // these dependencies need to be listed before the C runtime below (i.e.
478 // AddRunTimeLibs).
479 if (D.IsFlangMode() &&
480 !Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nodefaultlibs)) {
481 ToolChain.addFortranRuntimeLibraryPath(Args, CmdArgs);
482 ToolChain.addFortranRuntimeLibs(Args, CmdArgs);
483 CmdArgs.push_back(Elt: "-lm");
484 }
485
486 if (!Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_r)) {
487 if (!Args.hasArg(Ids: options::OPT_nodefaultlibs)) {
488 if (IsStatic || IsStaticPIE)
489 CmdArgs.push_back(Elt: "--start-group");
490
491 if (NeedsSanitizerDeps)
492 linkSanitizerRuntimeDeps(TC: ToolChain, Args, CmdArgs);
493
494 if (NeedsXRayDeps)
495 linkXRayRuntimeDeps(TC: ToolChain, Args, CmdArgs);
496
497 bool WantPthread = Args.hasArg(Ids: options::OPT_pthread) ||
498 Args.hasArg(Ids: options::OPT_pthreads);
499
500 // Use the static OpenMP runtime with -static-openmp
501 bool StaticOpenMP = Args.hasArg(Ids: options::OPT_static_openmp) &&
502 !Args.hasArg(Ids: options::OPT_static);
503
504 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
505 // require librt. Most modern Linux platforms do, but some may not.
506 if (addOpenMPRuntime(C, CmdArgs, TC: ToolChain, Args, ForceStaticHostRuntime: StaticOpenMP,
507 IsOffloadingHost: JA.isHostOffloading(OKind: Action::OFK_OpenMP),
508 /* GompNeedsRT= */ true))
509 // OpenMP runtimes implies pthreads when using the GNU toolchain.
510 // FIXME: Does this really make sense for all GNU toolchains?
511 WantPthread = true;
512
513 AddRunTimeLibs(TC: ToolChain, D, CmdArgs, Args);
514
515 // LLVM support for atomics on 32-bit SPARC V8+ is incomplete, so
516 // forcibly link with libatomic as a workaround.
517 // TODO: Issue #41880 and D118021.
518 if (getToolChain().getTriple().getArch() == llvm::Triple::sparc) {
519 CmdArgs.push_back(Elt: "--push-state");
520 CmdArgs.push_back(Elt: "--as-needed");
521 CmdArgs.push_back(Elt: "-latomic");
522 CmdArgs.push_back(Elt: "--pop-state");
523 }
524
525 // We don't need libpthread neither for bionic (Android) nor for musl,
526 // (used by OHOS as runtime library).
527 if (WantPthread && !isAndroid && !isOHOSFamily)
528 CmdArgs.push_back(Elt: "-lpthread");
529
530 if (Args.hasArg(Ids: options::OPT_fsplit_stack))
531 CmdArgs.push_back(Elt: "--wrap=pthread_create");
532
533 if (!Args.hasArg(Ids: options::OPT_nolibc))
534 CmdArgs.push_back(Elt: "-lc");
535
536 // Add IAMCU specific libs, if needed.
537 if (IsIAMCU)
538 CmdArgs.push_back(Elt: "-lgloss");
539
540 if (IsStatic || IsStaticPIE)
541 CmdArgs.push_back(Elt: "--end-group");
542 else
543 AddRunTimeLibs(TC: ToolChain, D, CmdArgs, Args);
544
545 // Add IAMCU specific libs (outside the group), if needed.
546 if (IsIAMCU) {
547 CmdArgs.push_back(Elt: "--as-needed");
548 CmdArgs.push_back(Elt: "-lsoftfp");
549 CmdArgs.push_back(Elt: "--no-as-needed");
550 }
551 }
552
553 if (!Args.hasArg(Ids: options::OPT_nostartfiles) && !IsIAMCU) {
554 if (HasCRTBeginEndFiles) {
555 std::string P;
556 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
557 !isAndroid) {
558 std::string crtend = ToolChain.getCompilerRT(Args, Component: "crtend",
559 Type: ToolChain::FT_Object);
560 if (ToolChain.getVFS().exists(Path: crtend))
561 P = crtend;
562 }
563 if (P.empty()) {
564 const char *crtend;
565 if (Args.hasArg(Ids: options::OPT_shared))
566 crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
567 else if (IsPIE || IsStaticPIE)
568 crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
569 else
570 crtend = isAndroid ? "crtend_android.o" : "crtend.o";
571 P = ToolChain.GetFilePath(Name: crtend);
572 }
573 CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
574 }
575 if (!isAndroid)
576 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crtn.o")));
577 }
578 }
579
580 // Emit -T after -L paths so that INPUT()/GROUP() directives in the linker
581 // script resolve against the user-supplied and toolchain search paths in GNU
582 // ld.
583 Args.addAllArgs(Output&: CmdArgs, Ids: {options::OPT_T});
584
585 const char *Exec = Args.MakeArgString(Str: ToolChain.GetLinkerPath());
586 C.addCommand(Cmd: std::make_unique<Command>(args: JA, args: *this,
587 args: ResponseFileSupport::AtFileCurCP(),
588 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
589}
590
591void tools::gnutools::Assembler::ConstructJob(Compilation &C,
592 const JobAction &JA,
593 const InputInfo &Output,
594 const InputInfoList &Inputs,
595 const ArgList &Args,
596 const char *LinkingOutput) const {
597 const auto &D = getToolChain().getDriver();
598
599 claimNoWarnArgs(Args);
600
601 ArgStringList CmdArgs;
602
603 llvm::Reloc::Model RelocationModel;
604 unsigned PICLevel;
605 bool IsPIE;
606 const char *DefaultAssembler = "as";
607 // Enforce GNU as on Solaris; the native assembler's input syntax isn't fully
608 // compatible.
609 if (getToolChain().getTriple().isOSSolaris())
610 DefaultAssembler = "gas";
611 std::tie(args&: RelocationModel, args&: PICLevel, args&: IsPIE) =
612 ParsePICArgs(ToolChain: getToolChain(), Args);
613
614 if (const Arg *A = Args.getLastArg(Ids: options::OPT_gz, Ids: options::OPT_gz_EQ)) {
615 if (A->getOption().getID() == options::OPT_gz) {
616 CmdArgs.push_back(Elt: "--compress-debug-sections");
617 } else {
618 StringRef Value = A->getValue();
619 if (Value == "none" || Value == "zlib" || Value == "zstd") {
620 CmdArgs.push_back(
621 Elt: Args.MakeArgString(Str: "--compress-debug-sections=" + Twine(Value)));
622 } else {
623 D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
624 << A->getSpelling() << Value;
625 }
626 }
627 }
628
629 switch (getToolChain().getArch()) {
630 default:
631 break;
632 // Add --32/--64 to make sure we get the format we want.
633 // This is incomplete
634 case llvm::Triple::x86:
635 CmdArgs.push_back(Elt: "--32");
636 break;
637 case llvm::Triple::x86_64:
638 if (getToolChain().getTriple().isX32())
639 CmdArgs.push_back(Elt: "--x32");
640 else
641 CmdArgs.push_back(Elt: "--64");
642 break;
643 case llvm::Triple::ppc: {
644 CmdArgs.push_back(Elt: "-a32");
645 CmdArgs.push_back(Elt: "-mppc");
646 CmdArgs.push_back(Elt: "-mbig-endian");
647 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
648 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
649 break;
650 }
651 case llvm::Triple::ppcle: {
652 CmdArgs.push_back(Elt: "-a32");
653 CmdArgs.push_back(Elt: "-mppc");
654 CmdArgs.push_back(Elt: "-mlittle-endian");
655 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
656 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
657 break;
658 }
659 case llvm::Triple::ppc64: {
660 CmdArgs.push_back(Elt: "-a64");
661 CmdArgs.push_back(Elt: "-mppc64");
662 CmdArgs.push_back(Elt: "-mbig-endian");
663 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
664 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
665 break;
666 }
667 case llvm::Triple::ppc64le: {
668 CmdArgs.push_back(Elt: "-a64");
669 CmdArgs.push_back(Elt: "-mppc64");
670 CmdArgs.push_back(Elt: "-mlittle-endian");
671 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
672 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
673 break;
674 }
675 case llvm::Triple::riscv32:
676 case llvm::Triple::riscv64:
677 case llvm::Triple::riscv32be:
678 case llvm::Triple::riscv64be: {
679 StringRef ABIName = riscv::getRISCVABI(Args, Triple: getToolChain().getTriple());
680 CmdArgs.push_back(Elt: "-mabi");
681 CmdArgs.push_back(Elt: ABIName.data());
682 std::string MArchName =
683 riscv::getRISCVArch(Args, Triple: getToolChain().getTriple());
684 CmdArgs.push_back(Elt: "-march");
685 CmdArgs.push_back(Elt: Args.MakeArgString(Str: MArchName));
686 if (!Args.hasFlag(Pos: options::OPT_mrelax, Neg: options::OPT_mno_relax, Default: true))
687 Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_mrelax, Neg: options::OPT_mno_relax);
688 break;
689 }
690 case llvm::Triple::sparc:
691 case llvm::Triple::sparcel: {
692 CmdArgs.push_back(Elt: "-32");
693 std::string CPU = getCPUName(D, Args, T: getToolChain().getTriple());
694 CmdArgs.push_back(
695 Elt: sparc::getSparcAsmModeForCPU(Name: CPU, Triple: getToolChain().getTriple()));
696 AddAssemblerKPIC(ToolChain: getToolChain(), Args, CmdArgs);
697 break;
698 }
699 case llvm::Triple::sparcv9: {
700 CmdArgs.push_back(Elt: "-64");
701 std::string CPU = getCPUName(D, Args, T: getToolChain().getTriple());
702 CmdArgs.push_back(
703 Elt: sparc::getSparcAsmModeForCPU(Name: CPU, Triple: getToolChain().getTriple()));
704 AddAssemblerKPIC(ToolChain: getToolChain(), Args, CmdArgs);
705 break;
706 }
707 case llvm::Triple::arm:
708 case llvm::Triple::armeb:
709 case llvm::Triple::thumb:
710 case llvm::Triple::thumbeb: {
711 const llvm::Triple &Triple2 = getToolChain().getTriple();
712 CmdArgs.push_back(Elt: arm::isARMBigEndian(Triple: Triple2, Args) ? "-EB" : "-EL");
713 switch (Triple2.getSubArch()) {
714 case llvm::Triple::ARMSubArch_v7:
715 CmdArgs.push_back(Elt: "-mfpu=neon");
716 break;
717 case llvm::Triple::ARMSubArch_v8:
718 CmdArgs.push_back(Elt: "-mfpu=crypto-neon-fp-armv8");
719 break;
720 default:
721 break;
722 }
723
724 switch (arm::getARMFloatABI(TC: getToolChain(), Args)) {
725 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
726 case arm::FloatABI::Soft:
727 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mfloat-abi=soft"));
728 break;
729 case arm::FloatABI::SoftFP:
730 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mfloat-abi=softfp"));
731 break;
732 case arm::FloatABI::Hard:
733 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mfloat-abi=hard"));
734 break;
735 }
736
737 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_march_EQ);
738 normalizeCPUNamesForAssembler(Args, CmdArgs);
739
740 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mfpu_EQ);
741 // The integrated assembler doesn't implement e_flags setting behavior for
742 // -meabi=gnu (gcc -mabi={apcs-gnu,atpcs} passes -meabi=gnu to gas). For
743 // compatibility we accept but warn.
744 if (Arg *A = Args.getLastArgNoClaim(Ids: options::OPT_mabi_EQ))
745 A->ignoreTargetSpecific();
746 break;
747 }
748 case llvm::Triple::aarch64:
749 case llvm::Triple::aarch64_be: {
750 CmdArgs.push_back(
751 Elt: getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL");
752 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_march_EQ);
753 normalizeCPUNamesForAssembler(Args, CmdArgs);
754
755 break;
756 }
757 case llvm::Triple::loongarch32: {
758 StringRef ABIName =
759 loongarch::getLoongArchABI(D, Args, Triple: getToolChain().getTriple());
760 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mabi=" + ABIName));
761 break;
762 }
763 case llvm::Triple::loongarch64: {
764 StringRef ABIName =
765 loongarch::getLoongArchABI(D, Args, Triple: getToolChain().getTriple());
766 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mabi=" + ABIName));
767 break;
768 }
769 case llvm::Triple::mips:
770 case llvm::Triple::mipsel:
771 case llvm::Triple::mips64:
772 case llvm::Triple::mips64el: {
773 StringRef CPUName;
774 StringRef ABIName;
775 mips::getMipsCPUAndABI(Args, Triple: getToolChain().getTriple(), CPUName, ABIName);
776 ABIName = mips::getGnuCompatibleMipsABIName(ABI: ABIName);
777
778 CmdArgs.push_back(Elt: "-march");
779 CmdArgs.push_back(Elt: CPUName.data());
780
781 CmdArgs.push_back(Elt: "-mabi");
782 CmdArgs.push_back(Elt: ABIName.data());
783
784 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
785 // or -mshared (not implemented) is in effect.
786 if (RelocationModel == llvm::Reloc::Static)
787 CmdArgs.push_back(Elt: "-mno-shared");
788
789 // LLVM doesn't support -mplt yet and acts as if it is always given.
790 // However, -mplt has no effect with the N64 ABI.
791 if (ABIName != "64" && !Args.hasArg(Ids: options::OPT_mno_abicalls))
792 CmdArgs.push_back(Elt: "-call_nonpic");
793
794 if (getToolChain().getTriple().isLittleEndian())
795 CmdArgs.push_back(Elt: "-EL");
796 else
797 CmdArgs.push_back(Elt: "-EB");
798
799 if (Arg *A = Args.getLastArg(Ids: options::OPT_mnan_EQ)) {
800 if (StringRef(A->getValue()) == "2008")
801 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mnan=2008"));
802 }
803
804 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
805 if (Arg *A = Args.getLastArg(Ids: options::OPT_mfp32, Ids: options::OPT_mfpxx,
806 Ids: options::OPT_mfp64)) {
807 A->claim();
808 A->render(Args, Output&: CmdArgs);
809 } else if (mips::shouldUseFPXX(
810 Args, Triple: getToolChain().getTriple(), CPUName, ABIName,
811 FloatABI: mips::getMipsFloatABI(D: getToolChain().getDriver(), Args,
812 Triple: getToolChain().getTriple())))
813 CmdArgs.push_back(Elt: "-mfpxx");
814
815 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
816 // -mno-mips16 is actually -no-mips16.
817 if (Arg *A =
818 Args.getLastArg(Ids: options::OPT_mips16, Ids: options::OPT_mno_mips16)) {
819 if (A->getOption().matches(ID: options::OPT_mips16)) {
820 A->claim();
821 A->render(Args, Output&: CmdArgs);
822 } else {
823 A->claim();
824 CmdArgs.push_back(Elt: "-no-mips16");
825 }
826 }
827
828 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mmicromips,
829 Ids: options::OPT_mno_micromips);
830 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mdsp, Ids: options::OPT_mno_dsp);
831 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mdspr2, Ids: options::OPT_mno_dspr2);
832
833 if (Arg *A = Args.getLastArg(Ids: options::OPT_mmsa, Ids: options::OPT_mno_msa)) {
834 // Do not use AddLastArg because not all versions of MIPS assembler
835 // support -mmsa / -mno-msa options.
836 if (A->getOption().matches(ID: options::OPT_mmsa))
837 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mmsa"));
838 }
839
840 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mhard_float,
841 Ids: options::OPT_msoft_float);
842
843 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mdouble_float,
844 Ids: options::OPT_msingle_float);
845
846 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_modd_spreg,
847 Ids: options::OPT_mno_odd_spreg);
848
849 AddAssemblerKPIC(ToolChain: getToolChain(), Args, CmdArgs);
850 break;
851 }
852 case llvm::Triple::systemz: {
853 // Always pass an -march option, since our default of z10 is later
854 // than the GNU assembler's default.
855 std::string CPUName =
856 systemz::getSystemZTargetCPU(Args, T: getToolChain().getTriple());
857 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-march=" + CPUName));
858 break;
859 }
860 case llvm::Triple::ve:
861 DefaultAssembler = "nas";
862 }
863
864 for (const Arg *A : Args.filtered(Ids: options::OPT_ffile_prefix_map_EQ,
865 Ids: options::OPT_fdebug_prefix_map_EQ)) {
866 StringRef Map = A->getValue();
867 if (!Map.contains(C: '='))
868 D.Diag(DiagID: diag::err_drv_invalid_argument_to_option)
869 << Map << A->getOption().getName();
870 else {
871 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "--debug-prefix-map"));
872 CmdArgs.push_back(Elt: Args.MakeArgString(Str: Map));
873 }
874 A->claim();
875 }
876
877 Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_I);
878 Args.AddAllArgValues(Output&: CmdArgs, Id0: options::OPT_Wa_COMMA, Id1: options::OPT_Xassembler);
879
880 CmdArgs.push_back(Elt: "-o");
881 CmdArgs.push_back(Elt: Output.getFilename());
882
883 for (const auto &II : Inputs)
884 CmdArgs.push_back(Elt: II.getFilename());
885
886 if (Arg *A = Args.getLastArg(Ids: options::OPT_g_Flag, Ids: options::OPT_gN_Group,
887 Ids: options::OPT_gdwarf_2, Ids: options::OPT_gdwarf_3,
888 Ids: options::OPT_gdwarf_4, Ids: options::OPT_gdwarf_5,
889 Ids: options::OPT_gdwarf))
890 if (!A->getOption().matches(ID: options::OPT_g0)) {
891 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_g_Flag);
892
893 unsigned DwarfVersion = getDwarfVersion(TC: getToolChain(), Args);
894 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-gdwarf-" + Twine(DwarfVersion)));
895 }
896
897 const char *Exec =
898 Args.MakeArgString(Str: getToolChain().GetProgramPath(Name: DefaultAssembler));
899 C.addCommand(Cmd: std::make_unique<Command>(args: JA, args: *this,
900 args: ResponseFileSupport::AtFileCurCP(),
901 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
902
903 // Handle the debug info splitting at object creation time if we're
904 // creating an object.
905 // TODO: Currently only works on linux with newer objcopy.
906 if (Args.hasArg(Ids: options::OPT_gsplit_dwarf) &&
907 getToolChain().getTriple().isOSLinux())
908 SplitDebugInfo(TC: getToolChain(), C, T: *this, JA, Args, Output,
909 OutFile: SplitDebugName(JA, Args, Input: Inputs[0], Output));
910}
911
912namespace {
913// Filter to remove Multilibs that don't exist as a suffix to Path
914class FilterNonExistent {
915 StringRef Base, File;
916 llvm::vfs::FileSystem &VFS;
917
918public:
919 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS)
920 : Base(Base), File(File), VFS(VFS) {}
921 bool operator()(const Multilib &M) {
922 return !VFS.exists(Path: Base + M.gccSuffix() + File);
923 }
924};
925} // end anonymous namespace
926
927static bool isSoftFloatABI(const ArgList &Args) {
928 Arg *A = Args.getLastArg(Ids: options::OPT_msoft_float, Ids: options::OPT_mhard_float,
929 Ids: options::OPT_mfloat_abi_EQ);
930 if (!A)
931 return false;
932
933 return A->getOption().matches(ID: options::OPT_msoft_float) ||
934 (A->getOption().matches(ID: options::OPT_mfloat_abi_EQ) &&
935 A->getValue() == StringRef("soft"));
936}
937
938static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
939 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
940}
941
942static bool isMipsEL(llvm::Triple::ArchType Arch) {
943 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
944}
945
946static bool isMips16(const ArgList &Args) {
947 Arg *A = Args.getLastArg(Ids: options::OPT_mips16, Ids: options::OPT_mno_mips16);
948 return A && A->getOption().matches(ID: options::OPT_mips16);
949}
950
951static bool isMicroMips(const ArgList &Args) {
952 Arg *A = Args.getLastArg(Ids: options::OPT_mmicromips, Ids: options::OPT_mno_micromips);
953 return A && A->getOption().matches(ID: options::OPT_mmicromips);
954}
955
956static bool isMSP430(llvm::Triple::ArchType Arch) {
957 return Arch == llvm::Triple::msp430;
958}
959
960static bool findMipsCsMultilibs(const Driver &D,
961 const Multilib::flags_list &Flags,
962 FilterNonExistent &NonExistent,
963 DetectedMultilibs &Result) {
964 // Check for Code Sourcery toolchain multilibs
965 MultilibSet CSMipsMultilibs;
966 {
967 auto MArchMips16 = MultilibBuilder("/mips16").flag(Flag: "-m32").flag(Flag: "-mips16");
968
969 auto MArchMicroMips =
970 MultilibBuilder("/micromips").flag(Flag: "-m32").flag(Flag: "-mmicromips");
971
972 auto MArchDefault = MultilibBuilder("")
973 .flag(Flag: "-mips16", /*Disallow=*/true)
974 .flag(Flag: "-mmicromips", /*Disallow=*/true);
975
976 auto UCLibc = MultilibBuilder("/uclibc").flag(Flag: "-muclibc");
977
978 auto SoftFloat = MultilibBuilder("/soft-float").flag(Flag: "-msoft-float");
979
980 auto Nan2008 = MultilibBuilder("/nan2008").flag(Flag: "-mnan=2008");
981
982 auto DefaultFloat = MultilibBuilder("")
983 .flag(Flag: "-msoft-float", /*Disallow=*/true)
984 .flag(Flag: "-mnan=2008", /*Disallow=*/true);
985
986 auto BigEndian =
987 MultilibBuilder("").flag(Flag: "-EB").flag(Flag: "-EL", /*Disallow=*/true);
988
989 auto LittleEndian =
990 MultilibBuilder("/el").flag(Flag: "-EL").flag(Flag: "-EB", /*Disallow=*/true);
991
992 // Note that this one's osSuffix is ""
993 auto MAbi64 = MultilibBuilder("")
994 .gccSuffix(S: "/64")
995 .includeSuffix(S: "/64")
996 .flag(Flag: "-mabi=n64")
997 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
998 .flag(Flag: "-m32", /*Disallow=*/true);
999
1000 CSMipsMultilibs =
1001 MultilibSetBuilder()
1002 .Either(M1: MArchMips16, M2: MArchMicroMips, M3: MArchDefault)
1003 .Maybe(M: UCLibc)
1004 .Either(M1: SoftFloat, M2: Nan2008, M3: DefaultFloat)
1005 .FilterOut(Regex: "/micromips/nan2008")
1006 .FilterOut(Regex: "/mips16/nan2008")
1007 .Either(M1: BigEndian, M2: LittleEndian)
1008 .Maybe(M: MAbi64)
1009 .FilterOut(Regex: "/mips16.*/64")
1010 .FilterOut(Regex: "/micromips.*/64")
1011 .makeMultilibSet()
1012 .FilterOut(F: NonExistent)
1013 .setIncludeDirsCallback([](const Multilib &M) {
1014 std::vector<std::string> Dirs({"/include"});
1015 if (StringRef(M.includeSuffix()).starts_with(Prefix: "/uclibc"))
1016 Dirs.push_back(
1017 x: "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
1018 else
1019 Dirs.push_back(x: "/../../../../mips-linux-gnu/libc/usr/include");
1020 return Dirs;
1021 });
1022 }
1023
1024 MultilibSet DebianMipsMultilibs;
1025 {
1026 MultilibBuilder MAbiN32 =
1027 MultilibBuilder().gccSuffix(S: "/n32").includeSuffix(S: "/n32").flag(
1028 Flag: "-mabi=n32");
1029
1030 MultilibBuilder M64 = MultilibBuilder()
1031 .gccSuffix(S: "/64")
1032 .includeSuffix(S: "/64")
1033 .flag(Flag: "-m64")
1034 .flag(Flag: "-m32", /*Disallow=*/true)
1035 .flag(Flag: "-mabi=n32", /*Disallow=*/true);
1036
1037 MultilibBuilder M32 = MultilibBuilder()
1038 .gccSuffix(S: "/32")
1039 .flag(Flag: "-m64", /*Disallow=*/true)
1040 .flag(Flag: "-m32")
1041 .flag(Flag: "-mabi=n32", /*Disallow=*/true);
1042
1043 DebianMipsMultilibs = MultilibSetBuilder()
1044 .Either(M1: M32, M2: M64, M3: MAbiN32)
1045 .makeMultilibSet()
1046 .FilterOut(F: NonExistent);
1047 }
1048
1049 // Sort candidates. Toolchain that best meets the directories tree goes first.
1050 // Then select the first toolchains matches command line flags.
1051 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
1052 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
1053 std::iter_swap(a: Candidates, b: Candidates + 1);
1054 for (const MultilibSet *Candidate : Candidates) {
1055 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1056 if (Candidate == &DebianMipsMultilibs)
1057 Result.BiarchSibling = Multilib();
1058 Result.Multilibs = *Candidate;
1059 return true;
1060 }
1061 }
1062 return false;
1063}
1064
1065static bool findMipsMuslMultilibs(const Driver &D,
1066 const Multilib::flags_list &Flags,
1067 FilterNonExistent &NonExistent,
1068 DetectedMultilibs &Result) {
1069 // Musl toolchain multilibs
1070 MultilibSet MuslMipsMultilibs;
1071 {
1072 auto MArchMipsR2 = MultilibBuilder("")
1073 .osSuffix(S: "/mips-r2-hard-musl")
1074 .flag(Flag: "-EB")
1075 .flag(Flag: "-EL", /*Disallow=*/true)
1076 .flag(Flag: "-march=mips32r2");
1077
1078 auto MArchMipselR2 = MultilibBuilder("/mipsel-r2-hard-musl")
1079 .flag(Flag: "-EB", /*Disallow=*/true)
1080 .flag(Flag: "-EL")
1081 .flag(Flag: "-march=mips32r2");
1082
1083 MuslMipsMultilibs = MultilibSetBuilder()
1084 .Either(M1: MArchMipsR2, M2: MArchMipselR2)
1085 .makeMultilibSet();
1086
1087 // Specify the callback that computes the include directories.
1088 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1089 return std::vector<std::string>(
1090 {"/../sysroot" + M.osSuffix() + "/usr/include"});
1091 });
1092 }
1093 if (MuslMipsMultilibs.select(D, Flags, Result.SelectedMultilibs)) {
1094 Result.Multilibs = std::move(MuslMipsMultilibs);
1095 return true;
1096 }
1097 return false;
1098}
1099
1100static bool findMipsMtiMultilibs(const Driver &D,
1101 const Multilib::flags_list &Flags,
1102 FilterNonExistent &NonExistent,
1103 DetectedMultilibs &Result) {
1104 // CodeScape MTI toolchain v1.2 and early.
1105 MultilibSet MtiMipsMultilibsV1;
1106 {
1107 auto MArchMips32 = MultilibBuilder("/mips32")
1108 .flag(Flag: "-m32")
1109 .flag(Flag: "-m64", /*Disallow=*/true)
1110 .flag(Flag: "-mmicromips", /*Disallow=*/true)
1111 .flag(Flag: "-march=mips32");
1112
1113 auto MArchMicroMips = MultilibBuilder("/micromips")
1114 .flag(Flag: "-m32")
1115 .flag(Flag: "-m64", /*Disallow=*/true)
1116 .flag(Flag: "-mmicromips");
1117
1118 auto MArchMips64r2 = MultilibBuilder("/mips64r2")
1119 .flag(Flag: "-m32", /*Disallow=*/true)
1120 .flag(Flag: "-m64")
1121 .flag(Flag: "-march=mips64r2");
1122
1123 auto MArchMips64 = MultilibBuilder("/mips64")
1124 .flag(Flag: "-m32", /*Disallow=*/true)
1125 .flag(Flag: "-m64")
1126 .flag(Flag: "-march=mips64r2", /*Disallow=*/true);
1127
1128 auto MArchDefault = MultilibBuilder("")
1129 .flag(Flag: "-m32")
1130 .flag(Flag: "-m64", /*Disallow=*/true)
1131 .flag(Flag: "-mmicromips", /*Disallow=*/true)
1132 .flag(Flag: "-march=mips32r2");
1133
1134 auto Mips16 = MultilibBuilder("/mips16").flag(Flag: "-mips16");
1135
1136 auto UCLibc = MultilibBuilder("/uclibc").flag(Flag: "-muclibc");
1137
1138 auto MAbi64 = MultilibBuilder("/64")
1139 .flag(Flag: "-mabi=n64")
1140 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1141 .flag(Flag: "-m32", /*Disallow=*/true);
1142
1143 auto BigEndian =
1144 MultilibBuilder("").flag(Flag: "-EB").flag(Flag: "-EL", /*Disallow=*/true);
1145
1146 auto LittleEndian =
1147 MultilibBuilder("/el").flag(Flag: "-EL").flag(Flag: "-EB", /*Disallow=*/true);
1148
1149 auto SoftFloat = MultilibBuilder("/sof").flag(Flag: "-msoft-float");
1150
1151 auto Nan2008 = MultilibBuilder("/nan2008").flag(Flag: "-mnan=2008");
1152
1153 MtiMipsMultilibsV1 =
1154 MultilibSetBuilder()
1155 .Either(M1: MArchMips32, M2: MArchMicroMips, M3: MArchMips64r2, M4: MArchMips64,
1156 M5: MArchDefault)
1157 .Maybe(M: UCLibc)
1158 .Maybe(M: Mips16)
1159 .FilterOut(Regex: "/mips64/mips16")
1160 .FilterOut(Regex: "/mips64r2/mips16")
1161 .FilterOut(Regex: "/micromips/mips16")
1162 .Maybe(M: MAbi64)
1163 .FilterOut(Regex: "/micromips/64")
1164 .FilterOut(Regex: "/mips32/64")
1165 .FilterOut(Regex: "^/64")
1166 .FilterOut(Regex: "/mips16/64")
1167 .Either(M1: BigEndian, M2: LittleEndian)
1168 .Maybe(M: SoftFloat)
1169 .Maybe(M: Nan2008)
1170 .FilterOut(Regex: ".*sof/nan2008")
1171 .makeMultilibSet()
1172 .FilterOut(F: NonExistent)
1173 .setIncludeDirsCallback([](const Multilib &M) {
1174 std::vector<std::string> Dirs({"/include"});
1175 if (StringRef(M.includeSuffix()).starts_with(Prefix: "/uclibc"))
1176 Dirs.push_back(x: "/../../../../sysroot/uclibc/usr/include");
1177 else
1178 Dirs.push_back(x: "/../../../../sysroot/usr/include");
1179 return Dirs;
1180 });
1181 }
1182
1183 // CodeScape IMG toolchain starting from v1.3.
1184 MultilibSet MtiMipsMultilibsV2;
1185 {
1186 auto BeHard = MultilibBuilder("/mips-r2-hard")
1187 .flag(Flag: "-EB")
1188 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1189 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1190 .flag(Flag: "-muclibc", /*Disallow=*/true);
1191 auto BeSoft = MultilibBuilder("/mips-r2-soft")
1192 .flag(Flag: "-EB")
1193 .flag(Flag: "-msoft-float")
1194 .flag(Flag: "-mnan=2008", /*Disallow=*/true);
1195 auto ElHard = MultilibBuilder("/mipsel-r2-hard")
1196 .flag(Flag: "-EL")
1197 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1198 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1199 .flag(Flag: "-muclibc", /*Disallow=*/true);
1200 auto ElSoft = MultilibBuilder("/mipsel-r2-soft")
1201 .flag(Flag: "-EL")
1202 .flag(Flag: "-msoft-float")
1203 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1204 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1205 auto BeHardNan = MultilibBuilder("/mips-r2-hard-nan2008")
1206 .flag(Flag: "-EB")
1207 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1208 .flag(Flag: "-mnan=2008")
1209 .flag(Flag: "-muclibc", /*Disallow=*/true);
1210 auto ElHardNan = MultilibBuilder("/mipsel-r2-hard-nan2008")
1211 .flag(Flag: "-EL")
1212 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1213 .flag(Flag: "-mnan=2008")
1214 .flag(Flag: "-muclibc", /*Disallow=*/true)
1215 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1216 auto BeHardNanUclibc = MultilibBuilder("/mips-r2-hard-nan2008-uclibc")
1217 .flag(Flag: "-EB")
1218 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1219 .flag(Flag: "-mnan=2008")
1220 .flag(Flag: "-muclibc");
1221 auto ElHardNanUclibc = MultilibBuilder("/mipsel-r2-hard-nan2008-uclibc")
1222 .flag(Flag: "-EL")
1223 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1224 .flag(Flag: "-mnan=2008")
1225 .flag(Flag: "-muclibc");
1226 auto BeHardUclibc = MultilibBuilder("/mips-r2-hard-uclibc")
1227 .flag(Flag: "-EB")
1228 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1229 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1230 .flag(Flag: "-muclibc");
1231 auto ElHardUclibc = MultilibBuilder("/mipsel-r2-hard-uclibc")
1232 .flag(Flag: "-EL")
1233 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1234 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1235 .flag(Flag: "-muclibc");
1236 auto ElMicroHardNan = MultilibBuilder("/micromipsel-r2-hard-nan2008")
1237 .flag(Flag: "-EL")
1238 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1239 .flag(Flag: "-mnan=2008")
1240 .flag(Flag: "-mmicromips");
1241 auto ElMicroSoft = MultilibBuilder("/micromipsel-r2-soft")
1242 .flag(Flag: "-EL")
1243 .flag(Flag: "-msoft-float")
1244 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1245 .flag(Flag: "-mmicromips");
1246
1247 auto O32 = MultilibBuilder("/lib")
1248 .osSuffix(S: "")
1249 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1250 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1251 auto N32 = MultilibBuilder("/lib32")
1252 .osSuffix(S: "")
1253 .flag(Flag: "-mabi=n32")
1254 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1255 auto N64 = MultilibBuilder("/lib64")
1256 .osSuffix(S: "")
1257 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1258 .flag(Flag: "-mabi=n64");
1259
1260 MtiMipsMultilibsV2 =
1261 MultilibSetBuilder()
1262 .Either(Ms: {BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1263 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1264 ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1265 .Either(M1: O32, M2: N32, M3: N64)
1266 .makeMultilibSet()
1267 .FilterOut(F: NonExistent)
1268 .setIncludeDirsCallback([](const Multilib &M) {
1269 return std::vector<std::string>({"/../../../../sysroot" +
1270 M.includeSuffix() +
1271 "/../usr/include"});
1272 })
1273 .setFilePathsCallback([](const Multilib &M) {
1274 return std::vector<std::string>(
1275 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1276 });
1277 }
1278 for (auto *Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1279 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1280 Result.Multilibs = *Candidate;
1281 return true;
1282 }
1283 }
1284 return false;
1285}
1286
1287static bool findMipsImgMultilibs(const Driver &D,
1288 const Multilib::flags_list &Flags,
1289 FilterNonExistent &NonExistent,
1290 DetectedMultilibs &Result) {
1291 // CodeScape IMG toolchain v1.2 and early.
1292 MultilibSet ImgMultilibsV1;
1293 {
1294 auto Mips64r6 = MultilibBuilder("/mips64r6")
1295 .flag(Flag: "-m64")
1296 .flag(Flag: "-m32", /*Disallow=*/true);
1297
1298 auto LittleEndian =
1299 MultilibBuilder("/el").flag(Flag: "-EL").flag(Flag: "-EB", /*Disallow=*/true);
1300
1301 auto MAbi64 = MultilibBuilder("/64")
1302 .flag(Flag: "-mabi=n64")
1303 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1304 .flag(Flag: "-m32", /*Disallow=*/true);
1305
1306 ImgMultilibsV1 =
1307 MultilibSetBuilder()
1308 .Maybe(M: Mips64r6)
1309 .Maybe(M: MAbi64)
1310 .Maybe(M: LittleEndian)
1311 .makeMultilibSet()
1312 .FilterOut(F: NonExistent)
1313 .setIncludeDirsCallback([](const Multilib &M) {
1314 return std::vector<std::string>(
1315 {"/include", "/../../../../sysroot/usr/include"});
1316 });
1317 }
1318
1319 // CodeScape IMG toolchain starting from v1.3.
1320 MultilibSet ImgMultilibsV2;
1321 {
1322 auto BeHard = MultilibBuilder("/mips-r6-hard")
1323 .flag(Flag: "-EB")
1324 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1325 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1326 auto BeSoft = MultilibBuilder("/mips-r6-soft")
1327 .flag(Flag: "-EB")
1328 .flag(Flag: "-msoft-float")
1329 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1330 auto ElHard = MultilibBuilder("/mipsel-r6-hard")
1331 .flag(Flag: "-EL")
1332 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1333 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1334 auto ElSoft = MultilibBuilder("/mipsel-r6-soft")
1335 .flag(Flag: "-EL")
1336 .flag(Flag: "-msoft-float")
1337 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1338 auto BeMicroHard = MultilibBuilder("/micromips-r6-hard")
1339 .flag(Flag: "-EB")
1340 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1341 .flag(Flag: "-mmicromips");
1342 auto BeMicroSoft = MultilibBuilder("/micromips-r6-soft")
1343 .flag(Flag: "-EB")
1344 .flag(Flag: "-msoft-float")
1345 .flag(Flag: "-mmicromips");
1346 auto ElMicroHard = MultilibBuilder("/micromipsel-r6-hard")
1347 .flag(Flag: "-EL")
1348 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1349 .flag(Flag: "-mmicromips");
1350 auto ElMicroSoft = MultilibBuilder("/micromipsel-r6-soft")
1351 .flag(Flag: "-EL")
1352 .flag(Flag: "-msoft-float")
1353 .flag(Flag: "-mmicromips");
1354
1355 auto O32 = MultilibBuilder("/lib")
1356 .osSuffix(S: "")
1357 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1358 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1359 auto N32 = MultilibBuilder("/lib32")
1360 .osSuffix(S: "")
1361 .flag(Flag: "-mabi=n32")
1362 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1363 auto N64 = MultilibBuilder("/lib64")
1364 .osSuffix(S: "")
1365 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1366 .flag(Flag: "-mabi=n64");
1367
1368 ImgMultilibsV2 =
1369 MultilibSetBuilder()
1370 .Either(Ms: {BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1371 ElMicroHard, ElMicroSoft})
1372 .Either(M1: O32, M2: N32, M3: N64)
1373 .makeMultilibSet()
1374 .FilterOut(F: NonExistent)
1375 .setIncludeDirsCallback([](const Multilib &M) {
1376 return std::vector<std::string>({"/../../../../sysroot" +
1377 M.includeSuffix() +
1378 "/../usr/include"});
1379 })
1380 .setFilePathsCallback([](const Multilib &M) {
1381 return std::vector<std::string>(
1382 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1383 });
1384 }
1385 for (auto *Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1386 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1387 Result.Multilibs = *Candidate;
1388 return true;
1389 }
1390 }
1391 return false;
1392}
1393
1394bool clang::driver::findMIPSMultilibs(const Driver &D,
1395 const llvm::Triple &TargetTriple,
1396 StringRef Path, const ArgList &Args,
1397 DetectedMultilibs &Result) {
1398 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1399
1400 StringRef CPUName;
1401 StringRef ABIName;
1402 tools::mips::getMipsCPUAndABI(Args, Triple: TargetTriple, CPUName, ABIName);
1403
1404 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1405
1406 Multilib::flags_list Flags;
1407 addMultilibFlag(Enabled: TargetTriple.isMIPS32(), Flag: "-m32", Flags);
1408 addMultilibFlag(Enabled: TargetTriple.isMIPS64(), Flag: "-m64", Flags);
1409 addMultilibFlag(Enabled: isMips16(Args), Flag: "-mips16", Flags);
1410 addMultilibFlag(Enabled: CPUName == "mips32", Flag: "-march=mips32", Flags);
1411 addMultilibFlag(Enabled: CPUName == "mips32r2" || CPUName == "mips32r3" ||
1412 CPUName == "mips32r5" || CPUName == "p5600",
1413 Flag: "-march=mips32r2", Flags);
1414 addMultilibFlag(Enabled: CPUName == "mips32r6", Flag: "-march=mips32r6", Flags);
1415 addMultilibFlag(Enabled: CPUName == "mips64", Flag: "-march=mips64", Flags);
1416 addMultilibFlag(Enabled: CPUName == "mips64r2" || CPUName == "mips64r3" ||
1417 CPUName == "mips64r5" || CPUName == "octeon" ||
1418 CPUName == "octeon+",
1419 Flag: "-march=mips64r2", Flags);
1420 addMultilibFlag(Enabled: CPUName == "mips64r6" || CPUName == "i6400" ||
1421 CPUName == "i6500",
1422 Flag: "-march=mips64r6", Flags);
1423 addMultilibFlag(Enabled: isMicroMips(Args), Flag: "-mmicromips", Flags);
1424 addMultilibFlag(Enabled: tools::mips::isUCLibc(Args), Flag: "-muclibc", Flags);
1425 addMultilibFlag(Enabled: tools::mips::isNaN2008(D, Args, Triple: TargetTriple), Flag: "-mnan=2008",
1426 Flags);
1427 addMultilibFlag(Enabled: ABIName == "n32", Flag: "-mabi=n32", Flags);
1428 addMultilibFlag(Enabled: ABIName == "n64", Flag: "-mabi=n64", Flags);
1429 addMultilibFlag(Enabled: isSoftFloatABI(Args), Flag: "-msoft-float", Flags);
1430 addMultilibFlag(Enabled: !isSoftFloatABI(Args), Flag: "-mhard-float", Flags);
1431 addMultilibFlag(Enabled: isMipsEL(Arch: TargetArch), Flag: "-EL", Flags);
1432 addMultilibFlag(Enabled: !isMipsEL(Arch: TargetArch), Flag: "-EB", Flags);
1433
1434 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1435 TargetTriple.getOS() == llvm::Triple::Linux &&
1436 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1437 return findMipsMuslMultilibs(D, Flags, NonExistent, Result);
1438
1439 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1440 TargetTriple.getOS() == llvm::Triple::Linux &&
1441 TargetTriple.isGNUEnvironment())
1442 return findMipsMtiMultilibs(D, Flags, NonExistent, Result);
1443
1444 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1445 TargetTriple.getOS() == llvm::Triple::Linux &&
1446 TargetTriple.isGNUEnvironment())
1447 return findMipsImgMultilibs(D, Flags, NonExistent, Result);
1448
1449 if (findMipsCsMultilibs(D, Flags, NonExistent, Result))
1450 return true;
1451
1452 // Fallback to the regular toolchain-tree structure.
1453 Multilib Default;
1454 Result.Multilibs.push_back(M: Default);
1455 Result.Multilibs.FilterOut(F: NonExistent);
1456
1457 if (Result.Multilibs.select(D, Flags, Result.SelectedMultilibs)) {
1458 Result.BiarchSibling = Multilib();
1459 return true;
1460 }
1461
1462 return false;
1463}
1464
1465static void findAndroidArmMultilibs(const Driver &D,
1466 const llvm::Triple &TargetTriple,
1467 StringRef Path, const ArgList &Args,
1468 DetectedMultilibs &Result) {
1469 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1470 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1471 MultilibBuilder ArmV7Multilib = MultilibBuilder("/armv7-a")
1472 .flag(Flag: "-march=armv7-a")
1473 .flag(Flag: "-mthumb", /*Disallow=*/true);
1474 MultilibBuilder ThumbMultilib = MultilibBuilder("/thumb")
1475 .flag(Flag: "-march=armv7-a", /*Disallow=*/true)
1476 .flag(Flag: "-mthumb");
1477 MultilibBuilder ArmV7ThumbMultilib =
1478 MultilibBuilder("/armv7-a/thumb").flag(Flag: "-march=armv7-a").flag(Flag: "-mthumb");
1479 MultilibBuilder DefaultMultilib =
1480 MultilibBuilder("")
1481 .flag(Flag: "-march=armv7-a", /*Disallow=*/true)
1482 .flag(Flag: "-mthumb", /*Disallow=*/true);
1483 MultilibSet AndroidArmMultilibs =
1484 MultilibSetBuilder()
1485 .Either(M1: ThumbMultilib, M2: ArmV7Multilib, M3: ArmV7ThumbMultilib,
1486 M4: DefaultMultilib)
1487 .makeMultilibSet()
1488 .FilterOut(F: NonExistent);
1489
1490 Multilib::flags_list Flags;
1491 llvm::StringRef Arch = Args.getLastArgValue(Id: options::OPT_march_EQ);
1492 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1493 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1494 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1495 bool IsThumbMode = IsThumbArch ||
1496 Args.hasFlag(Pos: options::OPT_mthumb, Neg: options::OPT_mno_thumb, Default: false) ||
1497 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB);
1498 bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1499 (llvm::ARM::parseArchVersion(Arch) == 7 ||
1500 (IsArmArch && Arch == "" && IsV7SubArch));
1501 addMultilibFlag(Enabled: IsArmV7Mode, Flag: "-march=armv7-a", Flags);
1502 addMultilibFlag(Enabled: IsThumbMode, Flag: "-mthumb", Flags);
1503
1504 if (AndroidArmMultilibs.select(D, Flags, Result.SelectedMultilibs))
1505 Result.Multilibs = std::move(AndroidArmMultilibs);
1506}
1507
1508static bool findMSP430Multilibs(const Driver &D,
1509 const llvm::Triple &TargetTriple,
1510 StringRef Path, const ArgList &Args,
1511 DetectedMultilibs &Result) {
1512 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1513 MultilibBuilder WithoutExceptions =
1514 MultilibBuilder("/430").flag(Flag: "-exceptions", /*Disallow=*/true);
1515 MultilibBuilder WithExceptions =
1516 MultilibBuilder("/430/exceptions").flag(Flag: "-exceptions");
1517
1518 // FIXME: when clang starts to support msp430x ISA additional logic
1519 // to select between multilib must be implemented
1520 // MultilibBuilder MSP430xMultilib = MultilibBuilder("/large");
1521
1522 Result.Multilibs.push_back(M: WithoutExceptions.makeMultilib());
1523 Result.Multilibs.push_back(M: WithExceptions.makeMultilib());
1524 Result.Multilibs.FilterOut(F: NonExistent);
1525
1526 Multilib::flags_list Flags;
1527 addMultilibFlag(Enabled: Args.hasFlag(Pos: options::OPT_fexceptions,
1528 Neg: options::OPT_fno_exceptions, Default: false),
1529 Flag: "-exceptions", Flags);
1530 if (Result.Multilibs.select(D, Flags, Result.SelectedMultilibs))
1531 return true;
1532
1533 return false;
1534}
1535
1536static void findCSKYMultilibs(const Driver &D, const llvm::Triple &TargetTriple,
1537 StringRef Path, const ArgList &Args,
1538 DetectedMultilibs &Result) {
1539 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1540
1541 tools::csky::FloatABI TheFloatABI = tools::csky::getCSKYFloatABI(D, Args);
1542 std::optional<llvm::StringRef> Res =
1543 tools::csky::getCSKYArchName(D, Args, Triple: TargetTriple);
1544
1545 if (!Res)
1546 return;
1547 auto ARCHName = *Res;
1548
1549 Multilib::flags_list Flags;
1550 addMultilibFlag(Enabled: TheFloatABI == tools::csky::FloatABI::Hard, Flag: "-hard-fp",
1551 Flags);
1552 addMultilibFlag(Enabled: TheFloatABI == tools::csky::FloatABI::SoftFP, Flag: "-soft-fp",
1553 Flags);
1554 addMultilibFlag(Enabled: TheFloatABI == tools::csky::FloatABI::Soft, Flag: "-soft", Flags);
1555 addMultilibFlag(Enabled: ARCHName == "ck801", Flag: "-march=ck801", Flags);
1556 addMultilibFlag(Enabled: ARCHName == "ck802", Flag: "-march=ck802", Flags);
1557 addMultilibFlag(Enabled: ARCHName == "ck803", Flag: "-march=ck803", Flags);
1558 addMultilibFlag(Enabled: ARCHName == "ck804", Flag: "-march=ck804", Flags);
1559 addMultilibFlag(Enabled: ARCHName == "ck805", Flag: "-march=ck805", Flags);
1560 addMultilibFlag(Enabled: ARCHName == "ck807", Flag: "-march=ck807", Flags);
1561 addMultilibFlag(Enabled: ARCHName == "ck810", Flag: "-march=ck810", Flags);
1562 addMultilibFlag(Enabled: ARCHName == "ck810v", Flag: "-march=ck810v", Flags);
1563 addMultilibFlag(Enabled: ARCHName == "ck860", Flag: "-march=ck860", Flags);
1564 addMultilibFlag(Enabled: ARCHName == "ck860v", Flag: "-march=ck860v", Flags);
1565
1566 bool isBigEndian = false;
1567 if (Arg *A = Args.getLastArg(Ids: options::OPT_mlittle_endian,
1568 Ids: options::OPT_mbig_endian))
1569 isBigEndian = !A->getOption().matches(ID: options::OPT_mlittle_endian);
1570 addMultilibFlag(Enabled: isBigEndian, Flag: "-EB", Flags);
1571
1572 auto HardFloat = MultilibBuilder("/hard-fp").flag(Flag: "-hard-fp");
1573 auto SoftFpFloat = MultilibBuilder("/soft-fp").flag(Flag: "-soft-fp");
1574 auto SoftFloat = MultilibBuilder("").flag(Flag: "-soft");
1575 auto Arch801 = MultilibBuilder("/ck801").flag(Flag: "-march=ck801");
1576 auto Arch802 = MultilibBuilder("/ck802").flag(Flag: "-march=ck802");
1577 auto Arch803 = MultilibBuilder("/ck803").flag(Flag: "-march=ck803");
1578 // CK804 use the same library as CK803
1579 auto Arch804 = MultilibBuilder("/ck803").flag(Flag: "-march=ck804");
1580 auto Arch805 = MultilibBuilder("/ck805").flag(Flag: "-march=ck805");
1581 auto Arch807 = MultilibBuilder("/ck807").flag(Flag: "-march=ck807");
1582 auto Arch810 = MultilibBuilder("").flag(Flag: "-march=ck810");
1583 auto Arch810v = MultilibBuilder("/ck810v").flag(Flag: "-march=ck810v");
1584 auto Arch860 = MultilibBuilder("/ck860").flag(Flag: "-march=ck860");
1585 auto Arch860v = MultilibBuilder("/ck860v").flag(Flag: "-march=ck860v");
1586 auto BigEndian = MultilibBuilder("/big").flag(Flag: "-EB");
1587
1588 MultilibSet CSKYMultilibs =
1589 MultilibSetBuilder()
1590 .Maybe(M: BigEndian)
1591 .Either(Ms: {Arch801, Arch802, Arch803, Arch804, Arch805, Arch807,
1592 Arch810, Arch810v, Arch860, Arch860v})
1593 .Either(M1: HardFloat, M2: SoftFpFloat, M3: SoftFloat)
1594 .makeMultilibSet()
1595 .FilterOut(F: NonExistent);
1596
1597 if (CSKYMultilibs.select(D, Flags, Result.SelectedMultilibs))
1598 Result.Multilibs = std::move(CSKYMultilibs);
1599}
1600
1601/// Extend the multi-lib re-use selection mechanism for RISC-V.
1602/// This function will try to re-use multi-lib if they are compatible.
1603/// Definition of compatible:
1604/// - ABI must be the same.
1605/// - multi-lib is a subset of current arch, e.g. multi-lib=march=rv32im
1606/// is a subset of march=rv32imc.
1607/// - march that contains atomic extension can't reuse multi-lib that
1608/// doesn't have atomic, vice versa. e.g. multi-lib=march=rv32im and
1609/// march=rv32ima are not compatible, because software and hardware
1610/// atomic operation can't work together correctly.
1611static bool
1612selectRISCVMultilib(const Driver &D, const MultilibSet &RISCVMultilibSet,
1613 const Multilib::flags_list &Flags,
1614 llvm::SmallVectorImpl<Multilib> &SelectedMultilibs) {
1615 // Try to find the perfect matching multi-lib first.
1616 if (RISCVMultilibSet.select(D, Flags, SelectedMultilibs))
1617 return true;
1618
1619 Multilib::flags_list NewFlags;
1620 std::vector<MultilibBuilder> NewMultilibs;
1621
1622 // Collect all flags and extract Arch from march
1623 StringRef Arch;
1624 for (StringRef Flag : Flags) {
1625 if (Flag.consume_front(Prefix: "-march=")) {
1626 Arch = Flag;
1627 continue;
1628 }
1629
1630 NewFlags.push_back(x: Flag.str());
1631 }
1632
1633 llvm::Expected<std::unique_ptr<llvm::RISCVISAInfo>> ParseResult =
1634 llvm::RISCVISAInfo::parseArchString(
1635 Arch, /*EnableExperimentalExtension=*/true,
1636 /*ExperimentalExtensionVersionCheck=*/false);
1637 // Ignore any error here, we assume it will be handled in another place.
1638 if (llvm::errorToBool(Err: ParseResult.takeError()))
1639 return false;
1640
1641 auto &ISAInfo = *ParseResult;
1642
1643 addMultilibFlag(Enabled: ISAInfo->getXLen() == 32, Flag: "-m32", Flags&: NewFlags);
1644 addMultilibFlag(Enabled: ISAInfo->getXLen() == 64, Flag: "-m64", Flags&: NewFlags);
1645
1646 llvm::StringSet<> AllArchExts;
1647 // Reconstruct multi-lib list, and break march option into separated
1648 // extension. e.g. march=rv32im -> +i +m
1649 for (const auto &M : RISCVMultilibSet) {
1650 bool Skip = false;
1651
1652 MultilibBuilder NewMultilib =
1653 MultilibBuilder(M.gccSuffix(), M.osSuffix(), M.includeSuffix());
1654 for (StringRef Flag : M.flags()) {
1655 // Add back all flags except -march.
1656 if (!Flag.consume_front(Prefix: "-march=")) {
1657 NewMultilib.flag(Flag);
1658 continue;
1659 }
1660
1661 // Break down -march into individual extension.
1662 llvm::Expected<std::unique_ptr<llvm::RISCVISAInfo>> MLConfigParseResult =
1663 llvm::RISCVISAInfo::parseArchString(
1664 Arch: Flag, /*EnableExperimentalExtension=*/true,
1665 /*ExperimentalExtensionVersionCheck=*/false);
1666 // Ignore any error here, we assume it will handled in another place.
1667 if (llvm::errorToBool(Err: MLConfigParseResult.takeError())) {
1668 // We might get a parsing error if rv32e in the list, we could just skip
1669 // that and process the rest of multi-lib configs.
1670 Skip = true;
1671 continue;
1672 }
1673 auto &MLConfigISAInfo = *MLConfigParseResult;
1674
1675 for (auto &MLConfigArchExt : MLConfigISAInfo->getExtensions()) {
1676 auto ExtName = MLConfigArchExt.first;
1677 NewMultilib.flag(Flag: Twine("-", ExtName).str());
1678
1679 if (AllArchExts.insert(key: ExtName).second) {
1680 addMultilibFlag(Enabled: ISAInfo->hasExtension(Ext: ExtName),
1681 Flag: Twine("-", ExtName).str(), Flags&: NewFlags);
1682 }
1683 }
1684
1685 // Check the XLEN explicitly.
1686 if (MLConfigISAInfo->getXLen() == 32) {
1687 NewMultilib.flag(Flag: "-m32");
1688 NewMultilib.flag(Flag: "-m64", /*Disallow*/ true);
1689 } else {
1690 NewMultilib.flag(Flag: "-m32", /*Disallow*/ true);
1691 NewMultilib.flag(Flag: "-m64");
1692 }
1693
1694 // Atomic extension must be explicitly checked, soft and hard atomic
1695 // operation never co-work correctly.
1696 if (!MLConfigISAInfo->hasExtension(Ext: "a"))
1697 NewMultilib.flag(Flag: "-a", /*Disallow*/ true);
1698 }
1699
1700 if (Skip)
1701 continue;
1702
1703 NewMultilibs.emplace_back(args&: NewMultilib);
1704 }
1705
1706 // Build an internal used only multi-lib list, used for checking any
1707 // compatible multi-lib.
1708 MultilibSet NewRISCVMultilibs =
1709 MultilibSetBuilder().Either(Ms: NewMultilibs).makeMultilibSet();
1710
1711 if (NewRISCVMultilibs.select(D, Flags: NewFlags, SelectedMultilibs))
1712 for (const Multilib &NewSelectedM : SelectedMultilibs)
1713 for (const auto &M : RISCVMultilibSet)
1714 // Look up the corresponding multi-lib entry in original multi-lib set.
1715 if (M.gccSuffix() == NewSelectedM.gccSuffix())
1716 return true;
1717
1718 return false;
1719}
1720
1721static void findRISCVBareMetalMultilibs(const Driver &D,
1722 const llvm::Triple &TargetTriple,
1723 StringRef Path, const ArgList &Args,
1724 DetectedMultilibs &Result) {
1725 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1726 struct RiscvMultilib {
1727 StringRef march;
1728 StringRef mabi;
1729 };
1730 // currently only support the set of multilibs like riscv-gnu-toolchain does.
1731 // TODO: support MULTILIB_REUSE
1732 constexpr RiscvMultilib RISCVMultilibSet[] = {
1733 {.march: "rv32i", .mabi: "ilp32"}, {.march: "rv32im", .mabi: "ilp32"}, {.march: "rv32iac", .mabi: "ilp32"},
1734 {.march: "rv32imac", .mabi: "ilp32"}, {.march: "rv32imafc", .mabi: "ilp32f"}, {.march: "rv64imac", .mabi: "lp64"},
1735 {.march: "rv64imafdc", .mabi: "lp64d"}};
1736
1737 std::vector<MultilibBuilder> Ms;
1738 for (auto Element : RISCVMultilibSet) {
1739 // multilib path rule is ${march}/${mabi}
1740 Ms.emplace_back(
1741 args&: MultilibBuilder(
1742 (Twine(Element.march) + "/" + Twine(Element.mabi)).str())
1743 .flag(Flag: Twine("-march=", Element.march).str())
1744 .flag(Flag: Twine("-mabi=", Element.mabi).str()));
1745 }
1746
1747 StringRef EndiannessSuffix = TargetTriple.isLittleEndian() ? "" : "be";
1748 MultilibSet RISCVMultilibs =
1749 MultilibSetBuilder()
1750 .Either(Ms)
1751 .makeMultilibSet()
1752 .FilterOut(F: NonExistent)
1753 .setFilePathsCallback([EndiannessSuffix](const Multilib &M) {
1754 return std::vector<std::string>(
1755 {M.gccSuffix(),
1756 "/../../../../riscv64" + EndiannessSuffix.str() +
1757 "-unknown-elf/lib" + M.gccSuffix(),
1758 "/../../../../riscv32" + EndiannessSuffix.str() +
1759 "-unknown-elf/lib" + M.gccSuffix()});
1760 });
1761
1762 Multilib::flags_list Flags;
1763 StringRef ABIName = tools::riscv::getRISCVABI(Args, Triple: TargetTriple);
1764 std::string MArch = tools::riscv::getRISCVArch(Args, Triple: TargetTriple);
1765 Flags.push_back(x: "-march=" + MArch);
1766 Flags.push_back(x: "-mabi=" + ABIName.str());
1767
1768 if (selectRISCVMultilib(D, RISCVMultilibSet: RISCVMultilibs, Flags, SelectedMultilibs&: Result.SelectedMultilibs))
1769 Result.Multilibs = std::move(RISCVMultilibs);
1770}
1771
1772static void findRISCVMultilibs(const Driver &D,
1773 const llvm::Triple &TargetTriple, StringRef Path,
1774 const ArgList &Args, DetectedMultilibs &Result) {
1775 if (TargetTriple.getOS() == llvm::Triple::UnknownOS)
1776 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result);
1777
1778 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1779 MultilibBuilder Ilp32 =
1780 MultilibBuilder("lib32/ilp32").flag(Flag: "-m32").flag(Flag: "-mabi=ilp32");
1781 MultilibBuilder Ilp32f =
1782 MultilibBuilder("lib32/ilp32f").flag(Flag: "-m32").flag(Flag: "-mabi=ilp32f");
1783 MultilibBuilder Ilp32d =
1784 MultilibBuilder("lib32/ilp32d").flag(Flag: "-m32").flag(Flag: "-mabi=ilp32d");
1785 MultilibBuilder Lp64 =
1786 MultilibBuilder("lib64/lp64").flag(Flag: "-m64").flag(Flag: "-mabi=lp64");
1787 MultilibBuilder Lp64f =
1788 MultilibBuilder("lib64/lp64f").flag(Flag: "-m64").flag(Flag: "-mabi=lp64f");
1789 MultilibBuilder Lp64d =
1790 MultilibBuilder("lib64/lp64d").flag(Flag: "-m64").flag(Flag: "-mabi=lp64d");
1791 MultilibSet RISCVMultilibs =
1792 MultilibSetBuilder()
1793 .Either(Ms: {Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d})
1794 .makeMultilibSet()
1795 .FilterOut(F: NonExistent);
1796
1797 Multilib::flags_list Flags;
1798 bool IsRV64 = TargetTriple.isRISCV64();
1799 StringRef ABIName = tools::riscv::getRISCVABI(Args, Triple: TargetTriple);
1800
1801 addMultilibFlag(Enabled: !IsRV64, Flag: "-m32", Flags);
1802 addMultilibFlag(Enabled: IsRV64, Flag: "-m64", Flags);
1803 addMultilibFlag(Enabled: ABIName == "ilp32", Flag: "-mabi=ilp32", Flags);
1804 addMultilibFlag(Enabled: ABIName == "ilp32f", Flag: "-mabi=ilp32f", Flags);
1805 addMultilibFlag(Enabled: ABIName == "ilp32d", Flag: "-mabi=ilp32d", Flags);
1806 addMultilibFlag(Enabled: ABIName == "lp64", Flag: "-mabi=lp64", Flags);
1807 addMultilibFlag(Enabled: ABIName == "lp64f", Flag: "-mabi=lp64f", Flags);
1808 addMultilibFlag(Enabled: ABIName == "lp64d", Flag: "-mabi=lp64d", Flags);
1809
1810 if (RISCVMultilibs.select(D, Flags, Result.SelectedMultilibs))
1811 Result.Multilibs = std::move(RISCVMultilibs);
1812}
1813
1814static bool findBiarchMultilibs(const Driver &D,
1815 const llvm::Triple &TargetTriple,
1816 StringRef Path, const ArgList &Args,
1817 bool NeedsBiarchSuffix,
1818 DetectedMultilibs &Result) {
1819 MultilibBuilder DefaultBuilder;
1820
1821 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1822 // in what would normally be GCCInstallPath and put the 64-bit
1823 // libs in a subdirectory named 64. The simple logic we follow is that
1824 // *if* there is a subdirectory of the right name with crtbegin.o in it,
1825 // we use that. If not, and if not a biarch triple alias, we look for
1826 // crtbegin.o without the subdirectory.
1827
1828 StringRef Suff64 = "/64";
1829 // Solaris uses platform-specific suffixes instead of /64.
1830 if (TargetTriple.isOSSolaris()) {
1831 switch (TargetTriple.getArch()) {
1832 case llvm::Triple::x86:
1833 case llvm::Triple::x86_64:
1834 Suff64 = "/amd64";
1835 break;
1836 case llvm::Triple::sparc:
1837 case llvm::Triple::sparcv9:
1838 Suff64 = "/sparcv9";
1839 break;
1840 default:
1841 break;
1842 }
1843 }
1844
1845 Multilib Alt64 = MultilibBuilder()
1846 .gccSuffix(S: Suff64)
1847 .includeSuffix(S: Suff64)
1848 .flag(Flag: "-m32", /*Disallow=*/true)
1849 .flag(Flag: "-m64")
1850 .flag(Flag: "-mx32", /*Disallow=*/true)
1851 .makeMultilib();
1852 Multilib Alt32 = MultilibBuilder()
1853 .gccSuffix(S: "/32")
1854 .includeSuffix(S: "/32")
1855 .flag(Flag: "-m32")
1856 .flag(Flag: "-m64", /*Disallow=*/true)
1857 .flag(Flag: "-mx32", /*Disallow=*/true)
1858 .makeMultilib();
1859 Multilib Altx32 = MultilibBuilder()
1860 .gccSuffix(S: "/x32")
1861 .includeSuffix(S: "/x32")
1862 .flag(Flag: "-m32", /*Disallow=*/true)
1863 .flag(Flag: "-m64", /*Disallow=*/true)
1864 .flag(Flag: "-mx32")
1865 .makeMultilib();
1866 Multilib Alt32sparc = MultilibBuilder()
1867 .gccSuffix(S: "/sparcv8plus")
1868 .includeSuffix(S: "/sparcv8plus")
1869 .flag(Flag: "-m32")
1870 .flag(Flag: "-m64", /*Disallow=*/true)
1871 .makeMultilib();
1872
1873 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
1874 FilterNonExistent NonExistent(
1875 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
1876
1877 // Determine default multilib from: 32, 64, x32
1878 // Also handle cases such as 64 on 32, 32 on 64, etc.
1879 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
1880 const bool IsX32 = TargetTriple.isX32();
1881 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
1882 Want = WANT64;
1883 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32sparc))
1884 Want = WANT64;
1885 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
1886 Want = WANT64;
1887 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
1888 Want = WANT32;
1889 else if (TargetTriple.isArch64Bit() && !NonExistent(Alt32sparc))
1890 Want = WANT64;
1891 else {
1892 if (TargetTriple.isArch32Bit())
1893 Want = NeedsBiarchSuffix ? WANT64 : WANT32;
1894 else if (IsX32)
1895 Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
1896 else
1897 Want = NeedsBiarchSuffix ? WANT32 : WANT64;
1898 }
1899
1900 if (Want == WANT32)
1901 DefaultBuilder.flag(Flag: "-m32")
1902 .flag(Flag: "-m64", /*Disallow=*/true)
1903 .flag(Flag: "-mx32", /*Disallow=*/true);
1904 else if (Want == WANT64)
1905 DefaultBuilder.flag(Flag: "-m32", /*Disallow=*/true)
1906 .flag(Flag: "-m64")
1907 .flag(Flag: "-mx32", /*Disallow=*/true);
1908 else if (Want == WANTX32)
1909 DefaultBuilder.flag(Flag: "-m32", /*Disallow=*/true)
1910 .flag(Flag: "-m64", /*Disallow=*/true)
1911 .flag(Flag: "-mx32");
1912 else
1913 return false;
1914
1915 Multilib Default = DefaultBuilder.makeMultilib();
1916
1917 Result.Multilibs.push_back(M: Default);
1918 Result.Multilibs.push_back(M: Alt64);
1919 Result.Multilibs.push_back(M: Alt32);
1920 Result.Multilibs.push_back(M: Altx32);
1921 Result.Multilibs.push_back(M: Alt32sparc);
1922
1923 Result.Multilibs.FilterOut(F: NonExistent);
1924
1925 Multilib::flags_list Flags;
1926 addMultilibFlag(Enabled: TargetTriple.isArch64Bit() && !IsX32, Flag: "-m64", Flags);
1927 addMultilibFlag(Enabled: TargetTriple.isArch32Bit(), Flag: "-m32", Flags);
1928 addMultilibFlag(Enabled: TargetTriple.isArch64Bit() && IsX32, Flag: "-mx32", Flags);
1929
1930 if (!Result.Multilibs.select(D, Flags, Result.SelectedMultilibs))
1931 return false;
1932
1933 if (Result.SelectedMultilibs.back() == Alt64 ||
1934 Result.SelectedMultilibs.back() == Alt32 ||
1935 Result.SelectedMultilibs.back() == Altx32 ||
1936 Result.SelectedMultilibs.back() == Alt32sparc)
1937 Result.BiarchSibling = Default;
1938
1939 return true;
1940}
1941
1942/// Generic_GCC - A tool chain using the 'gcc' command to perform
1943/// all subcommands; this relies on gcc translating the majority of
1944/// command line options.
1945
1946/// Less-than for GCCVersion, implementing a Strict Weak Ordering.
1947bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
1948 int RHSPatch,
1949 StringRef RHSPatchSuffix) const {
1950 if (Major != RHSMajor)
1951 return Major < RHSMajor;
1952 if (Minor != RHSMinor) {
1953 // Note that versions without a specified minor sort higher than those with
1954 // a minor.
1955 if (RHSMinor == -1)
1956 return true;
1957 if (Minor == -1)
1958 return false;
1959 return Minor < RHSMinor;
1960 }
1961 if (Patch != RHSPatch) {
1962 // Note that versions without a specified patch sort higher than those with
1963 // a patch.
1964 if (RHSPatch == -1)
1965 return true;
1966 if (Patch == -1)
1967 return false;
1968
1969 // Otherwise just sort on the patch itself.
1970 return Patch < RHSPatch;
1971 }
1972 if (PatchSuffix != RHSPatchSuffix) {
1973 // Sort empty suffixes higher.
1974 if (RHSPatchSuffix.empty())
1975 return true;
1976 if (PatchSuffix.empty())
1977 return false;
1978
1979 // Provide a lexicographic sort to make this a total ordering.
1980 return PatchSuffix < RHSPatchSuffix;
1981 }
1982
1983 // The versions are equal.
1984 return false;
1985}
1986
1987/// Parse a GCCVersion object out of a string of text.
1988///
1989/// This is the primary means of forming GCCVersion objects.
1990/*static*/
1991Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) {
1992 const GCCVersion BadVersion = {.Text: VersionText.str(), .Major: -1, .Minor: -1, .Patch: -1, .MajorStr: "", .MinorStr: "", .PatchSuffix: ""};
1993 std::pair<StringRef, StringRef> First = VersionText.split(Separator: '.');
1994 std::pair<StringRef, StringRef> Second = First.second.split(Separator: '.');
1995
1996 StringRef MajorStr = First.first;
1997 StringRef MinorStr = Second.first;
1998 StringRef PatchStr = Second.second;
1999
2000 GCCVersion GoodVersion = {.Text: VersionText.str(), .Major: -1, .Minor: -1, .Patch: -1, .MajorStr: "", .MinorStr: "", .PatchSuffix: ""};
2001
2002 // Parse version number strings such as:
2003 // 5
2004 // 4.4
2005 // 4.4-patched
2006 // 4.4.0
2007 // 4.4.x
2008 // 4.4.2-rc4
2009 // 4.4.x-patched
2010 // 10-win32
2011 // Split on '.', handle 1, 2 or 3 such segments. Each segment must contain
2012 // purely a number, except for the last one, where a non-number suffix
2013 // is stored in PatchSuffix. The third segment is allowed to not contain
2014 // a number at all.
2015
2016 auto TryParseLastNumber = [&](StringRef Segment, int &Number,
2017 std::string &OutStr) -> bool {
2018 // Look for a number prefix and parse that, and split out any trailing
2019 // string into GoodVersion.PatchSuffix.
2020
2021 if (size_t EndNumber = Segment.find_first_not_of(Chars: "0123456789")) {
2022 StringRef NumberStr = Segment.slice(Start: 0, End: EndNumber);
2023 if (NumberStr.getAsInteger(Radix: 10, Result&: Number) || Number < 0)
2024 return false;
2025 OutStr = NumberStr;
2026 GoodVersion.PatchSuffix = Segment.substr(Start: EndNumber);
2027 return true;
2028 }
2029 return false;
2030 };
2031 auto TryParseNumber = [](StringRef Segment, int &Number) -> bool {
2032 if (Segment.getAsInteger(Radix: 10, Result&: Number) || Number < 0)
2033 return false;
2034 return true;
2035 };
2036
2037 if (MinorStr.empty()) {
2038 // If no minor string, major is the last segment
2039 if (!TryParseLastNumber(MajorStr, GoodVersion.Major, GoodVersion.MajorStr))
2040 return BadVersion;
2041 return GoodVersion;
2042 }
2043
2044 if (!TryParseNumber(MajorStr, GoodVersion.Major))
2045 return BadVersion;
2046 GoodVersion.MajorStr = MajorStr;
2047
2048 if (PatchStr.empty()) {
2049 // If no patch string, minor is the last segment
2050 if (!TryParseLastNumber(MinorStr, GoodVersion.Minor, GoodVersion.MinorStr))
2051 return BadVersion;
2052 return GoodVersion;
2053 }
2054
2055 if (!TryParseNumber(MinorStr, GoodVersion.Minor))
2056 return BadVersion;
2057 GoodVersion.MinorStr = MinorStr;
2058
2059 // For the last segment, tolerate a missing number.
2060 std::string DummyStr;
2061 TryParseLastNumber(PatchStr, GoodVersion.Patch, DummyStr);
2062 return GoodVersion;
2063}
2064
2065static llvm::StringRef getGCCToolchainDir(const ArgList &Args,
2066 llvm::StringRef SysRoot) {
2067 const Arg *A = Args.getLastArg(Ids: options::OPT_gcc_toolchain);
2068 if (A)
2069 return A->getValue();
2070
2071 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX.
2072 // GCC_INSTALL_PREFIX specifies the gcc installation for the default
2073 // sysroot and is likely not valid with a different sysroot.
2074 if (!SysRoot.empty())
2075 return "";
2076
2077 return GCC_INSTALL_PREFIX;
2078}
2079
2080/// Initialize a GCCInstallationDetector from the driver.
2081///
2082/// This performs all of the autodetection and sets up the various paths.
2083/// Once constructed, a GCCInstallationDetector is essentially immutable.
2084///
2085/// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
2086/// should instead pull the target out of the driver. This is currently
2087/// necessary because the driver doesn't store the final version of the target
2088/// triple.
2089void Generic_GCC::GCCInstallationDetector::init(
2090 const llvm::Triple &TargetTriple, const ArgList &Args) {
2091 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
2092 ? TargetTriple.get64BitArchVariant()
2093 : TargetTriple.get32BitArchVariant();
2094 // The library directories which may contain GCC installations.
2095 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
2096 // The compatible GCC triples for this particular architecture.
2097 SmallVector<StringRef, 16> CandidateTripleAliases;
2098 SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
2099 // Add some triples that we want to check first.
2100 CandidateTripleAliases.push_back(Elt: TargetTriple.str());
2101 std::string TripleNoVendor, BiarchTripleNoVendor;
2102 if (TargetTriple.getVendor() == llvm::Triple::UnknownVendor) {
2103 StringRef OSEnv = TargetTriple.getOSAndEnvironmentName();
2104 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32)
2105 OSEnv = "linux-gnu";
2106 TripleNoVendor = (TargetTriple.getArchName().str() + '-' + OSEnv).str();
2107 CandidateTripleAliases.push_back(Elt: TripleNoVendor);
2108 if (BiarchVariantTriple.getArch() != llvm::Triple::UnknownArch) {
2109 BiarchTripleNoVendor =
2110 (BiarchVariantTriple.getArchName().str() + '-' + OSEnv).str();
2111 CandidateBiarchTripleAliases.push_back(Elt: BiarchTripleNoVendor);
2112 }
2113 }
2114
2115 CollectLibDirsAndTriples(TargetTriple, BiarchTriple: BiarchVariantTriple, LibDirs&: CandidateLibDirs,
2116 TripleAliases&: CandidateTripleAliases, BiarchLibDirs&: CandidateBiarchLibDirs,
2117 BiarchTripleAliases&: CandidateBiarchTripleAliases);
2118
2119 // If --gcc-install-dir= is specified, skip filesystem detection.
2120 if (const Arg *A = Args.getLastArg(Ids: options::OPT_gcc_install_dir_EQ);
2121 A && A->getValue()[0]) {
2122 StringRef InstallDir = A->getValue();
2123 if (!ScanGCCForMultilibs(TargetTriple, Args, Path: InstallDir, NeedsBiarchSuffix: false)) {
2124 D.Diag(DiagID: diag::err_drv_invalid_gcc_install_dir) << InstallDir;
2125 } else {
2126 (void)InstallDir.consume_back(Suffix: "/");
2127 StringRef VersionText = llvm::sys::path::filename(path: InstallDir);
2128 StringRef TripleText =
2129 llvm::sys::path::filename(path: llvm::sys::path::parent_path(path: InstallDir));
2130
2131 SelectedInstallation.Version = GCCVersion::Parse(VersionText);
2132 SelectedInstallation.GCCTriple.setTriple(TripleText);
2133 SelectedInstallation.GCCInstallPath = std::string(InstallDir);
2134 SelectedInstallation.GCCParentLibPath =
2135 SelectedInstallation.GCCInstallPath + "/../../..";
2136 IsValid = true;
2137 }
2138 return;
2139 }
2140
2141 // If --gcc-triple is specified use this instead of trying to
2142 // auto-detect a triple.
2143 if (const Arg *A = Args.getLastArg(Ids: options::OPT_gcc_triple_EQ)) {
2144 StringRef GCCTriple = A->getValue();
2145 CandidateTripleAliases.clear();
2146 CandidateTripleAliases.push_back(Elt: GCCTriple);
2147 }
2148
2149 // Compute the set of prefixes for our search.
2150 SmallVector<std::string, 8> Prefixes;
2151 StringRef GCCToolchainDir = getGCCToolchainDir(Args, SysRoot: D.SysRoot);
2152 if (GCCToolchainDir != "") {
2153 if (GCCToolchainDir.back() == '/')
2154 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
2155
2156 Prefixes.push_back(Elt: std::string(GCCToolchainDir));
2157 } else {
2158 // If we have a SysRoot, try that first.
2159 if (!D.SysRoot.empty()) {
2160 Prefixes.push_back(Elt: D.SysRoot);
2161 AddDefaultGCCPrefixes(TargetTriple, Prefixes, SysRoot: D.SysRoot);
2162 }
2163
2164 // Then look for gcc installed alongside clang.
2165 Prefixes.push_back(Elt: D.Dir + "/..");
2166
2167 // Next, look for prefix(es) that correspond to distribution-supplied gcc
2168 // installations.
2169 if (D.SysRoot.empty()) {
2170 // Typically /usr.
2171 AddDefaultGCCPrefixes(TargetTriple, Prefixes, SysRoot: D.SysRoot);
2172 }
2173
2174 // Try to respect gcc-config on Gentoo if --gcc-toolchain is not provided.
2175 // This avoids accidentally enforcing the system GCC version when using a
2176 // custom toolchain.
2177 SmallVector<StringRef, 16> GentooTestTriples;
2178 // Try to match an exact triple as target triple first.
2179 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for
2180 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu"
2181 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching
2182 // triple x86_64-gentoo-linux-gnu is present.
2183 GentooTestTriples.push_back(Elt: TargetTriple.str());
2184 GentooTestTriples.append(in_start: CandidateTripleAliases.begin(),
2185 in_end: CandidateTripleAliases.end());
2186 if (ScanGentooConfigs(TargetTriple, Args, CandidateTriples: GentooTestTriples,
2187 BiarchTriples: CandidateBiarchTripleAliases))
2188 return;
2189 }
2190
2191 // Loop over the various components which exist and select the best GCC
2192 // installation available. GCC installs are ranked by version number.
2193 const GCCVersion VersionZero = GCCVersion::Parse(VersionText: "0.0.0");
2194 SelectedInstallation.Version = VersionZero;
2195 for (const std::string &Prefix : Prefixes) {
2196 auto &VFS = D.getVFS();
2197 if (!VFS.exists(Path: Prefix))
2198 continue;
2199 for (StringRef Suffix : CandidateLibDirs) {
2200 const std::string LibDir = concat(Path: Prefix, A: Suffix);
2201 if (!VFS.exists(Path: LibDir))
2202 continue;
2203 // Maybe filter out <libdir>/gcc and <libdir>/gcc-cross.
2204 bool GCCDirExists = VFS.exists(Path: LibDir + "/gcc");
2205 bool GCCCrossDirExists = VFS.exists(Path: LibDir + "/gcc-cross");
2206 for (StringRef Candidate : CandidateTripleAliases)
2207 ScanLibDirForGCCTriple(TargetArch: TargetTriple, Args, LibDir, CandidateTriple: Candidate, NeedsBiarchSuffix: false,
2208 GCCDirExists, GCCCrossDirExists);
2209 }
2210 for (StringRef Suffix : CandidateBiarchLibDirs) {
2211 const std::string LibDir = Prefix + Suffix.str();
2212 if (!VFS.exists(Path: LibDir))
2213 continue;
2214 bool GCCDirExists = VFS.exists(Path: LibDir + "/gcc");
2215 bool GCCCrossDirExists = VFS.exists(Path: LibDir + "/gcc-cross");
2216 for (StringRef Candidate : CandidateBiarchTripleAliases)
2217 ScanLibDirForGCCTriple(TargetArch: TargetTriple, Args, LibDir, CandidateTriple: Candidate, NeedsBiarchSuffix: true,
2218 GCCDirExists, GCCCrossDirExists);
2219 }
2220
2221 // Skip other prefixes once a GCC installation is found.
2222 if (SelectedInstallation.Version > VersionZero)
2223 break;
2224 }
2225}
2226
2227void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
2228 for (const auto &InstallPath : CandidateGCCInstallPaths)
2229 OS << "Found candidate GCC installation: " << InstallPath << "\n";
2230
2231 if (!SelectedInstallation.GCCInstallPath.empty())
2232 OS << "Selected GCC installation: " << SelectedInstallation.GCCInstallPath
2233 << "\n";
2234
2235 for (const auto &Multilib : Multilibs)
2236 OS << "Candidate multilib: " << Multilib << "\n";
2237
2238 if (Multilibs.size() != 0 ||
2239 !SelectedInstallation.SelectedMultilib.isDefault())
2240 OS << "Selected multilib: " << SelectedInstallation.SelectedMultilib
2241 << "\n";
2242}
2243
2244bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const {
2245 if (BiarchSibling) {
2246 M = *BiarchSibling;
2247 return true;
2248 }
2249 return false;
2250}
2251
2252void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
2253 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes,
2254 StringRef SysRoot) {
2255
2256 if (TargetTriple.isOSHaiku()) {
2257 Prefixes.push_back(Elt: concat(Path: SysRoot, A: "/boot/system/develop/tools"));
2258 return;
2259 }
2260
2261 if (TargetTriple.isOSSolaris()) {
2262 // Solaris is a special case.
2263 // The GCC installation is under
2264 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/
2265 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with
2266 // /usr/gcc/<version> as a prefix.
2267
2268 SmallVector<std::pair<GCCVersion, std::string>, 8> SolarisPrefixes;
2269 std::string PrefixDir = concat(Path: SysRoot, A: "/usr/gcc");
2270 std::error_code EC;
2271 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(Dir: PrefixDir, EC),
2272 LE;
2273 !EC && LI != LE; LI = LI.increment(EC)) {
2274 StringRef VersionText = llvm::sys::path::filename(path: LI->path());
2275 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2276
2277 // Filter out obviously bad entries.
2278 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(RHSMajor: 4, RHSMinor: 1, RHSPatch: 1))
2279 continue;
2280
2281 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str();
2282 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc";
2283 if (!D.getVFS().exists(Path: CandidateLibPath))
2284 continue;
2285
2286 SolarisPrefixes.emplace_back(
2287 Args: std::make_pair(x&: CandidateVersion, y&: CandidatePrefix));
2288 }
2289 // Sort in reverse order so GCCInstallationDetector::init picks the latest.
2290 std::sort(first: SolarisPrefixes.rbegin(), last: SolarisPrefixes.rend());
2291 for (auto p : SolarisPrefixes)
2292 Prefixes.emplace_back(Args&: p.second);
2293 return;
2294 }
2295
2296 // For Linux, if --sysroot is not specified, look for RHEL/CentOS devtoolsets
2297 // and gcc-toolsets.
2298 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux &&
2299 D.getVFS().exists(Path: "/opt/rh")) {
2300 // TODO: We may want to remove this, since the functionality
2301 // can be achieved using config files.
2302 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-13/root/usr");
2303 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-12/root/usr");
2304 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-11/root/usr");
2305 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-10/root/usr");
2306 Prefixes.push_back(Elt: "/opt/rh/devtoolset-12/root/usr");
2307 Prefixes.push_back(Elt: "/opt/rh/devtoolset-11/root/usr");
2308 Prefixes.push_back(Elt: "/opt/rh/devtoolset-10/root/usr");
2309 Prefixes.push_back(Elt: "/opt/rh/devtoolset-9/root/usr");
2310 Prefixes.push_back(Elt: "/opt/rh/devtoolset-8/root/usr");
2311 Prefixes.push_back(Elt: "/opt/rh/devtoolset-7/root/usr");
2312 Prefixes.push_back(Elt: "/opt/rh/devtoolset-6/root/usr");
2313 Prefixes.push_back(Elt: "/opt/rh/devtoolset-4/root/usr");
2314 Prefixes.push_back(Elt: "/opt/rh/devtoolset-3/root/usr");
2315 Prefixes.push_back(Elt: "/opt/rh/devtoolset-2/root/usr");
2316 }
2317
2318 // Fall back to /usr which is used by most non-Solaris systems.
2319 Prefixes.push_back(Elt: concat(Path: SysRoot, A: "/usr"));
2320}
2321
2322/*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
2323 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
2324 SmallVectorImpl<StringRef> &LibDirs,
2325 SmallVectorImpl<StringRef> &TripleAliases,
2326 SmallVectorImpl<StringRef> &BiarchLibDirs,
2327 SmallVectorImpl<StringRef> &BiarchTripleAliases) {
2328 // Declare a bunch of static data sets that we'll select between below. These
2329 // are specifically designed to always refer to string literals to avoid any
2330 // lifetime or initialization issues.
2331 //
2332 // The *Triples variables hard code some triples so that, for example,
2333 // --target=aarch64 (incomplete triple) can detect lib/aarch64-linux-gnu.
2334 // They are not needed when the user has correct LLVM_DEFAULT_TARGET_TRIPLE
2335 // and always uses the full --target (e.g. --target=aarch64-linux-gnu). The
2336 // lists should shrink over time. Please don't add more elements to *Triples.
2337 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
2338 static const char *const AArch64Triples[] = {
2339 "aarch64-none-linux-gnu", "aarch64-redhat-linux", "aarch64-suse-linux"};
2340 static const char *const AArch64beLibDirs[] = {"/lib"};
2341 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu"};
2342
2343 static const char *const ARMLibDirs[] = {"/lib"};
2344 static const char *const ARMTriples[] = {"arm-linux-gnueabi"};
2345 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
2346 "armv7hl-redhat-linux-gnueabi",
2347 "armv6hl-suse-linux-gnueabi",
2348 "armv7hl-suse-linux-gnueabi"};
2349 static const char *const ARMebLibDirs[] = {"/lib"};
2350 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi"};
2351 static const char *const ARMebHFTriples[] = {
2352 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
2353
2354 static const char *const AVRLibDirs[] = {"/lib"};
2355 static const char *const AVRTriples[] = {"avr"};
2356
2357 static const char *const CSKYLibDirs[] = {"/lib"};
2358 static const char *const CSKYTriples[] = {
2359 "csky-linux-gnuabiv2", "csky-linux-uclibcabiv2", "csky-elf-noneabiv2"};
2360
2361 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
2362 static const char *const X86_64Triples[] = {
2363 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
2364 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
2365 "x86_64-redhat-linux", "x86_64-suse-linux",
2366 "x86_64-manbo-linux-gnu", "x86_64-slackware-linux",
2367 "x86_64-unknown-linux", "x86_64-amazon-linux"};
2368 static const char *const X32Triples[] = {"x86_64-linux-gnux32",
2369 "x86_64-pc-linux-gnux32"};
2370 static const char *const X32LibDirs[] = {"/libx32", "/lib"};
2371 static const char *const X86LibDirs[] = {"/lib32", "/lib"};
2372 static const char *const X86Triples[] = {
2373 "i586-linux-gnu", "i686-linux-gnu", "i686-pc-linux-gnu",
2374 "i386-redhat-linux6E", "i686-redhat-linux", "i386-redhat-linux",
2375 "i586-suse-linux", "i686-montavista-linux",
2376 };
2377
2378 static const char *const LoongArch32LibDirs[] = {"/lib32", "/lib"};
2379 static const char *const LoongArch32Triples[] = {
2380 "loongarch32-linux-gnu", "loongarch32-unknown-linux-gnu",
2381 "loongarch32-linux-gnuf32", "loongarch32-unknown-linux-gnuf32",
2382 "loongarch32-linux-gnusf", "loongarch32-unknown-linux-gnusf"};
2383
2384 static const char *const LoongArch64LibDirs[] = {"/lib64", "/lib"};
2385 static const char *const LoongArch64Triples[] = {
2386 "loongarch64-linux-gnu", "loongarch64-unknown-linux-gnu"};
2387
2388 static const char *const M68kLibDirs[] = {"/lib"};
2389 static const char *const M68kTriples[] = {"m68k-unknown-linux-gnu",
2390 "m68k-suse-linux"};
2391
2392 static const char *const MIPSLibDirs[] = {"/libo32", "/lib"};
2393 static const char *const MIPSTriples[] = {
2394 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu",
2395 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"};
2396 static const char *const MIPSELLibDirs[] = {"/libo32", "/lib"};
2397 static const char *const MIPSELTriples[] = {"mipsel-linux-gnu",
2398 "mips-img-linux-gnu"};
2399
2400 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
2401 static const char *const MIPS64Triples[] = {
2402 "mips-mti-linux-gnu", "mips-img-linux-gnu", "mips64-linux-gnuabi64",
2403 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"};
2404 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
2405 static const char *const MIPS64ELTriples[] = {
2406 "mips-mti-linux-gnu", "mips-img-linux-gnu", "mips64el-linux-gnuabi64",
2407 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64"};
2408
2409 static const char *const MIPSN32LibDirs[] = {"/lib32"};
2410 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32",
2411 "mipsisa64r6-linux-gnuabin32"};
2412 static const char *const MIPSN32ELLibDirs[] = {"/lib32"};
2413 static const char *const MIPSN32ELTriples[] = {
2414 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"};
2415
2416 static const char *const MSP430LibDirs[] = {"/lib"};
2417 static const char *const MSP430Triples[] = {"msp430-elf"};
2418
2419 static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
2420 static const char *const PPCTriples[] = {
2421 "powerpc-unknown-linux-gnu",
2422 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a
2423 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux".
2424 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"};
2425 static const char *const PPCLELibDirs[] = {"/lib32", "/lib"};
2426 static const char *const PPCLETriples[] = {"powerpcle-unknown-linux-gnu",
2427 "powerpcle-linux-musl"};
2428
2429 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
2430 static const char *const PPC64Triples[] = {"powerpc64-unknown-linux-gnu",
2431 "powerpc64-suse-linux",
2432 "ppc64-redhat-linux"};
2433 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
2434 static const char *const PPC64LETriples[] = {
2435 "powerpc64le-unknown-linux-gnu", "powerpc64le-none-linux-gnu",
2436 "powerpc64le-suse-linux", "ppc64le-redhat-linux"};
2437
2438 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"};
2439 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu",
2440 "riscv32-unknown-elf"};
2441 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"};
2442 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu",
2443 "riscv64-unknown-elf"};
2444
2445 static const char *const RISCV32beLibDirs[] = {"/lib32", "/lib"};
2446 static const char *const RISCV32beTriples[] = {"riscv32be-unknown-linux-gnu",
2447 "riscv32be-linux-gnu",
2448 "riscv32be-unknown-elf"};
2449 static const char *const RISCV64beLibDirs[] = {"/lib64", "/lib"};
2450 static const char *const RISCV64beTriples[] = {"riscv64be-unknown-linux-gnu",
2451 "riscv64be-linux-gnu",
2452 "riscv64be-unknown-elf"};
2453
2454 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
2455 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
2456 "sparcv8-linux-gnu"};
2457 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
2458 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
2459 "sparcv9-linux-gnu"};
2460
2461 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
2462 static const char *const SystemZTriples[] = {
2463 "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu", "s390x-suse-linux",
2464 "s390x-redhat-linux"};
2465
2466 using std::begin;
2467 using std::end;
2468
2469 if (TargetTriple.isOSSolaris()) {
2470 static const char *const SolarisLibDirs[] = {"/lib"};
2471 static const char *const SolarisSparcV8Triples[] = {
2472 "sparc-sun-solaris2.11"};
2473 static const char *const SolarisSparcV9Triples[] = {
2474 "sparcv9-sun-solaris2.11"};
2475 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11"};
2476 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11"};
2477 LibDirs.append(in_start: begin(arr: SolarisLibDirs), in_end: end(arr: SolarisLibDirs));
2478 BiarchLibDirs.append(in_start: begin(arr: SolarisLibDirs), in_end: end(arr: SolarisLibDirs));
2479 switch (TargetTriple.getArch()) {
2480 case llvm::Triple::x86:
2481 TripleAliases.append(in_start: begin(arr: SolarisX86Triples), in_end: end(arr: SolarisX86Triples));
2482 BiarchTripleAliases.append(in_start: begin(arr: SolarisX86_64Triples),
2483 in_end: end(arr: SolarisX86_64Triples));
2484 break;
2485 case llvm::Triple::x86_64:
2486 TripleAliases.append(in_start: begin(arr: SolarisX86_64Triples),
2487 in_end: end(arr: SolarisX86_64Triples));
2488 BiarchTripleAliases.append(in_start: begin(arr: SolarisX86Triples),
2489 in_end: end(arr: SolarisX86Triples));
2490 break;
2491 case llvm::Triple::sparc:
2492 TripleAliases.append(in_start: begin(arr: SolarisSparcV8Triples),
2493 in_end: end(arr: SolarisSparcV8Triples));
2494 BiarchTripleAliases.append(in_start: begin(arr: SolarisSparcV9Triples),
2495 in_end: end(arr: SolarisSparcV9Triples));
2496 break;
2497 case llvm::Triple::sparcv9:
2498 TripleAliases.append(in_start: begin(arr: SolarisSparcV9Triples),
2499 in_end: end(arr: SolarisSparcV9Triples));
2500 BiarchTripleAliases.append(in_start: begin(arr: SolarisSparcV8Triples),
2501 in_end: end(arr: SolarisSparcV8Triples));
2502 break;
2503 default:
2504 break;
2505 }
2506 return;
2507 }
2508
2509 // Android targets should not use GNU/Linux tools or libraries.
2510 if (TargetTriple.isAndroid()) {
2511 static const char *const AArch64AndroidTriples[] = {
2512 "aarch64-linux-android"};
2513 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"};
2514 static const char *const X86AndroidTriples[] = {"i686-linux-android"};
2515 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"};
2516
2517 switch (TargetTriple.getArch()) {
2518 case llvm::Triple::aarch64:
2519 LibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2520 TripleAliases.append(in_start: begin(arr: AArch64AndroidTriples),
2521 in_end: end(arr: AArch64AndroidTriples));
2522 break;
2523 case llvm::Triple::arm:
2524 case llvm::Triple::thumb:
2525 LibDirs.append(in_start: begin(arr: ARMLibDirs), in_end: end(arr: ARMLibDirs));
2526 TripleAliases.append(in_start: begin(arr: ARMAndroidTriples), in_end: end(arr: ARMAndroidTriples));
2527 break;
2528 case llvm::Triple::x86_64:
2529 LibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2530 TripleAliases.append(in_start: begin(arr: X86_64AndroidTriples),
2531 in_end: end(arr: X86_64AndroidTriples));
2532 BiarchLibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2533 BiarchTripleAliases.append(in_start: begin(arr: X86AndroidTriples),
2534 in_end: end(arr: X86AndroidTriples));
2535 break;
2536 case llvm::Triple::x86:
2537 LibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2538 TripleAliases.append(in_start: begin(arr: X86AndroidTriples), in_end: end(arr: X86AndroidTriples));
2539 BiarchLibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2540 BiarchTripleAliases.append(in_start: begin(arr: X86_64AndroidTriples),
2541 in_end: end(arr: X86_64AndroidTriples));
2542 break;
2543 default:
2544 break;
2545 }
2546
2547 return;
2548 }
2549
2550 if (TargetTriple.isOSHurd()) {
2551 switch (TargetTriple.getArch()) {
2552 case llvm::Triple::aarch64:
2553 LibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2554 TripleAliases.push_back(Elt: "aarch64-gnu");
2555 break;
2556 case llvm::Triple::riscv64:
2557 LibDirs.append(in_start: begin(arr: RISCV64LibDirs), in_end: end(arr: RISCV64LibDirs));
2558 TripleAliases.push_back(Elt: "riscv64-gnu");
2559 break;
2560 case llvm::Triple::x86_64:
2561 LibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2562 TripleAliases.push_back(Elt: "x86_64-gnu");
2563 break;
2564 case llvm::Triple::x86:
2565 LibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2566 TripleAliases.push_back(Elt: "i686-gnu");
2567 break;
2568 default:
2569 break;
2570 }
2571
2572 return;
2573 }
2574
2575 if (TargetTriple.isWindowsCygwinEnvironment()) {
2576 LibDirs.push_back(Elt: "/lib");
2577 switch (TargetTriple.getArch()) {
2578 case llvm::Triple::x86_64:
2579 TripleAliases.append(IL: {"x86_64-pc-cygwin", "x86_64-pc-msys"});
2580 break;
2581 case llvm::Triple::x86:
2582 TripleAliases.append(IL: {"i686-pc-cygwin", "i686-pc-msys"});
2583 break;
2584 default:
2585 break;
2586 }
2587
2588 return;
2589 }
2590
2591 switch (TargetTriple.getArch()) {
2592 case llvm::Triple::aarch64:
2593 LibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2594 TripleAliases.append(in_start: begin(arr: AArch64Triples), in_end: end(arr: AArch64Triples));
2595 BiarchLibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2596 BiarchTripleAliases.append(in_start: begin(arr: AArch64Triples), in_end: end(arr: AArch64Triples));
2597 break;
2598 case llvm::Triple::aarch64_be:
2599 LibDirs.append(in_start: begin(arr: AArch64beLibDirs), in_end: end(arr: AArch64beLibDirs));
2600 TripleAliases.append(in_start: begin(arr: AArch64beTriples), in_end: end(arr: AArch64beTriples));
2601 BiarchLibDirs.append(in_start: begin(arr: AArch64beLibDirs), in_end: end(arr: AArch64beLibDirs));
2602 BiarchTripleAliases.append(in_start: begin(arr: AArch64beTriples), in_end: end(arr: AArch64beTriples));
2603 break;
2604 case llvm::Triple::arm:
2605 case llvm::Triple::thumb:
2606 LibDirs.append(in_start: begin(arr: ARMLibDirs), in_end: end(arr: ARMLibDirs));
2607 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF ||
2608 TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHFT64 ||
2609 TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF ||
2610 TargetTriple.getEnvironment() == llvm::Triple::EABIHF) {
2611 TripleAliases.append(in_start: begin(arr: ARMHFTriples), in_end: end(arr: ARMHFTriples));
2612 } else {
2613 TripleAliases.append(in_start: begin(arr: ARMTriples), in_end: end(arr: ARMTriples));
2614 }
2615 break;
2616 case llvm::Triple::armeb:
2617 case llvm::Triple::thumbeb:
2618 LibDirs.append(in_start: begin(arr: ARMebLibDirs), in_end: end(arr: ARMebLibDirs));
2619 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF ||
2620 TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHFT64 ||
2621 TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF ||
2622 TargetTriple.getEnvironment() == llvm::Triple::EABIHF) {
2623 TripleAliases.append(in_start: begin(arr: ARMebHFTriples), in_end: end(arr: ARMebHFTriples));
2624 } else {
2625 TripleAliases.append(in_start: begin(arr: ARMebTriples), in_end: end(arr: ARMebTriples));
2626 }
2627 break;
2628 case llvm::Triple::avr:
2629 LibDirs.append(in_start: begin(arr: AVRLibDirs), in_end: end(arr: AVRLibDirs));
2630 TripleAliases.append(in_start: begin(arr: AVRTriples), in_end: end(arr: AVRTriples));
2631 break;
2632 case llvm::Triple::csky:
2633 LibDirs.append(in_start: begin(arr: CSKYLibDirs), in_end: end(arr: CSKYLibDirs));
2634 TripleAliases.append(in_start: begin(arr: CSKYTriples), in_end: end(arr: CSKYTriples));
2635 break;
2636 case llvm::Triple::x86_64:
2637 if (TargetTriple.isX32()) {
2638 LibDirs.append(in_start: begin(arr: X32LibDirs), in_end: end(arr: X32LibDirs));
2639 TripleAliases.append(in_start: begin(arr: X32Triples), in_end: end(arr: X32Triples));
2640 BiarchLibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2641 BiarchTripleAliases.append(in_start: begin(arr: X86_64Triples), in_end: end(arr: X86_64Triples));
2642 } else {
2643 LibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2644 TripleAliases.append(in_start: begin(arr: X86_64Triples), in_end: end(arr: X86_64Triples));
2645 BiarchLibDirs.append(in_start: begin(arr: X32LibDirs), in_end: end(arr: X32LibDirs));
2646 BiarchTripleAliases.append(in_start: begin(arr: X32Triples), in_end: end(arr: X32Triples));
2647 }
2648 BiarchLibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2649 BiarchTripleAliases.append(in_start: begin(arr: X86Triples), in_end: end(arr: X86Triples));
2650 break;
2651 case llvm::Triple::x86:
2652 LibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2653 // MCU toolchain is 32 bit only and its triple alias is TargetTriple
2654 // itself, which will be appended below.
2655 if (!TargetTriple.isOSIAMCU()) {
2656 TripleAliases.append(in_start: begin(arr: X86Triples), in_end: end(arr: X86Triples));
2657 BiarchLibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2658 BiarchTripleAliases.append(in_start: begin(arr: X86_64Triples), in_end: end(arr: X86_64Triples));
2659 BiarchLibDirs.append(in_start: begin(arr: X32LibDirs), in_end: end(arr: X32LibDirs));
2660 BiarchTripleAliases.append(in_start: begin(arr: X32Triples), in_end: end(arr: X32Triples));
2661 }
2662 break;
2663 case llvm::Triple::loongarch32:
2664 LibDirs.append(in_start: begin(arr: LoongArch32LibDirs), in_end: end(arr: LoongArch32LibDirs));
2665 TripleAliases.append(in_start: begin(arr: LoongArch32Triples), in_end: end(arr: LoongArch32Triples));
2666 break;
2667 case llvm::Triple::loongarch64:
2668 LibDirs.append(in_start: begin(arr: LoongArch64LibDirs), in_end: end(arr: LoongArch64LibDirs));
2669 TripleAliases.append(in_start: begin(arr: LoongArch64Triples), in_end: end(arr: LoongArch64Triples));
2670 break;
2671 case llvm::Triple::m68k:
2672 LibDirs.append(in_start: begin(arr: M68kLibDirs), in_end: end(arr: M68kLibDirs));
2673 TripleAliases.append(in_start: begin(arr: M68kTriples), in_end: end(arr: M68kTriples));
2674 break;
2675 case llvm::Triple::mips:
2676 LibDirs.append(in_start: begin(arr: MIPSLibDirs), in_end: end(arr: MIPSLibDirs));
2677 TripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2678 BiarchLibDirs.append(in_start: begin(arr: MIPS64LibDirs), in_end: end(arr: MIPS64LibDirs));
2679 BiarchTripleAliases.append(in_start: begin(arr: MIPS64Triples), in_end: end(arr: MIPS64Triples));
2680 BiarchLibDirs.append(in_start: begin(arr: MIPSN32LibDirs), in_end: end(arr: MIPSN32LibDirs));
2681 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32Triples), in_end: end(arr: MIPSN32Triples));
2682 break;
2683 case llvm::Triple::mipsel:
2684 LibDirs.append(in_start: begin(arr: MIPSELLibDirs), in_end: end(arr: MIPSELLibDirs));
2685 TripleAliases.append(in_start: begin(arr: MIPSELTriples), in_end: end(arr: MIPSELTriples));
2686 TripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2687 BiarchLibDirs.append(in_start: begin(arr: MIPS64ELLibDirs), in_end: end(arr: MIPS64ELLibDirs));
2688 BiarchTripleAliases.append(in_start: begin(arr: MIPS64ELTriples), in_end: end(arr: MIPS64ELTriples));
2689 BiarchLibDirs.append(in_start: begin(arr: MIPSN32ELLibDirs), in_end: end(arr: MIPSN32ELLibDirs));
2690 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32ELTriples), in_end: end(arr: MIPSN32ELTriples));
2691 break;
2692 case llvm::Triple::mips64:
2693 LibDirs.append(in_start: begin(arr: MIPS64LibDirs), in_end: end(arr: MIPS64LibDirs));
2694 TripleAliases.append(in_start: begin(arr: MIPS64Triples), in_end: end(arr: MIPS64Triples));
2695 BiarchLibDirs.append(in_start: begin(arr: MIPSLibDirs), in_end: end(arr: MIPSLibDirs));
2696 BiarchTripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2697 BiarchLibDirs.append(in_start: begin(arr: MIPSN32LibDirs), in_end: end(arr: MIPSN32LibDirs));
2698 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32Triples), in_end: end(arr: MIPSN32Triples));
2699 break;
2700 case llvm::Triple::mips64el:
2701 LibDirs.append(in_start: begin(arr: MIPS64ELLibDirs), in_end: end(arr: MIPS64ELLibDirs));
2702 TripleAliases.append(in_start: begin(arr: MIPS64ELTriples), in_end: end(arr: MIPS64ELTriples));
2703 BiarchLibDirs.append(in_start: begin(arr: MIPSELLibDirs), in_end: end(arr: MIPSELLibDirs));
2704 BiarchTripleAliases.append(in_start: begin(arr: MIPSELTriples), in_end: end(arr: MIPSELTriples));
2705 BiarchLibDirs.append(in_start: begin(arr: MIPSN32ELLibDirs), in_end: end(arr: MIPSN32ELLibDirs));
2706 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32ELTriples), in_end: end(arr: MIPSN32ELTriples));
2707 BiarchTripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2708 break;
2709 case llvm::Triple::msp430:
2710 LibDirs.append(in_start: begin(arr: MSP430LibDirs), in_end: end(arr: MSP430LibDirs));
2711 TripleAliases.append(in_start: begin(arr: MSP430Triples), in_end: end(arr: MSP430Triples));
2712 break;
2713 case llvm::Triple::ppc:
2714 LibDirs.append(in_start: begin(arr: PPCLibDirs), in_end: end(arr: PPCLibDirs));
2715 TripleAliases.append(in_start: begin(arr: PPCTriples), in_end: end(arr: PPCTriples));
2716 BiarchLibDirs.append(in_start: begin(arr: PPC64LibDirs), in_end: end(arr: PPC64LibDirs));
2717 BiarchTripleAliases.append(in_start: begin(arr: PPC64Triples), in_end: end(arr: PPC64Triples));
2718 break;
2719 case llvm::Triple::ppcle:
2720 LibDirs.append(in_start: begin(arr: PPCLELibDirs), in_end: end(arr: PPCLELibDirs));
2721 TripleAliases.append(in_start: begin(arr: PPCLETriples), in_end: end(arr: PPCLETriples));
2722 BiarchLibDirs.append(in_start: begin(arr: PPC64LELibDirs), in_end: end(arr: PPC64LELibDirs));
2723 BiarchTripleAliases.append(in_start: begin(arr: PPC64LETriples), in_end: end(arr: PPC64LETriples));
2724 break;
2725 case llvm::Triple::ppc64:
2726 LibDirs.append(in_start: begin(arr: PPC64LibDirs), in_end: end(arr: PPC64LibDirs));
2727 TripleAliases.append(in_start: begin(arr: PPC64Triples), in_end: end(arr: PPC64Triples));
2728 BiarchLibDirs.append(in_start: begin(arr: PPCLibDirs), in_end: end(arr: PPCLibDirs));
2729 BiarchTripleAliases.append(in_start: begin(arr: PPCTriples), in_end: end(arr: PPCTriples));
2730 break;
2731 case llvm::Triple::ppc64le:
2732 LibDirs.append(in_start: begin(arr: PPC64LELibDirs), in_end: end(arr: PPC64LELibDirs));
2733 TripleAliases.append(in_start: begin(arr: PPC64LETriples), in_end: end(arr: PPC64LETriples));
2734 BiarchLibDirs.append(in_start: begin(arr: PPCLELibDirs), in_end: end(arr: PPCLELibDirs));
2735 BiarchTripleAliases.append(in_start: begin(arr: PPCLETriples), in_end: end(arr: PPCLETriples));
2736 break;
2737 case llvm::Triple::riscv32:
2738 LibDirs.append(in_start: begin(arr: RISCV32LibDirs), in_end: end(arr: RISCV32LibDirs));
2739 TripleAliases.append(in_start: begin(arr: RISCV32Triples), in_end: end(arr: RISCV32Triples));
2740 BiarchLibDirs.append(in_start: begin(arr: RISCV64LibDirs), in_end: end(arr: RISCV64LibDirs));
2741 BiarchTripleAliases.append(in_start: begin(arr: RISCV64Triples), in_end: end(arr: RISCV64Triples));
2742 break;
2743 case llvm::Triple::riscv64:
2744 LibDirs.append(in_start: begin(arr: RISCV64LibDirs), in_end: end(arr: RISCV64LibDirs));
2745 TripleAliases.append(in_start: begin(arr: RISCV64Triples), in_end: end(arr: RISCV64Triples));
2746 BiarchLibDirs.append(in_start: begin(arr: RISCV32LibDirs), in_end: end(arr: RISCV32LibDirs));
2747 BiarchTripleAliases.append(in_start: begin(arr: RISCV32Triples), in_end: end(arr: RISCV32Triples));
2748 break;
2749 case llvm::Triple::riscv32be:
2750 LibDirs.append(in_start: begin(arr: RISCV32beLibDirs), in_end: end(arr: RISCV32beLibDirs));
2751 TripleAliases.append(in_start: begin(arr: RISCV32beTriples), in_end: end(arr: RISCV32beTriples));
2752 BiarchLibDirs.append(in_start: begin(arr: RISCV64beLibDirs), in_end: end(arr: RISCV64beLibDirs));
2753 BiarchTripleAliases.append(in_start: begin(arr: RISCV64beTriples), in_end: end(arr: RISCV64beTriples));
2754 break;
2755 case llvm::Triple::riscv64be:
2756 LibDirs.append(in_start: begin(arr: RISCV64beLibDirs), in_end: end(arr: RISCV64beLibDirs));
2757 TripleAliases.append(in_start: begin(arr: RISCV64beTriples), in_end: end(arr: RISCV64beTriples));
2758 BiarchLibDirs.append(in_start: begin(arr: RISCV32beLibDirs), in_end: end(arr: RISCV32beLibDirs));
2759 BiarchTripleAliases.append(in_start: begin(arr: RISCV32beTriples), in_end: end(arr: RISCV32beTriples));
2760 break;
2761 case llvm::Triple::sparc:
2762 case llvm::Triple::sparcel:
2763 LibDirs.append(in_start: begin(arr: SPARCv8LibDirs), in_end: end(arr: SPARCv8LibDirs));
2764 TripleAliases.append(in_start: begin(arr: SPARCv8Triples), in_end: end(arr: SPARCv8Triples));
2765 BiarchLibDirs.append(in_start: begin(arr: SPARCv9LibDirs), in_end: end(arr: SPARCv9LibDirs));
2766 BiarchTripleAliases.append(in_start: begin(arr: SPARCv9Triples), in_end: end(arr: SPARCv9Triples));
2767 break;
2768 case llvm::Triple::sparcv9:
2769 LibDirs.append(in_start: begin(arr: SPARCv9LibDirs), in_end: end(arr: SPARCv9LibDirs));
2770 TripleAliases.append(in_start: begin(arr: SPARCv9Triples), in_end: end(arr: SPARCv9Triples));
2771 BiarchLibDirs.append(in_start: begin(arr: SPARCv8LibDirs), in_end: end(arr: SPARCv8LibDirs));
2772 BiarchTripleAliases.append(in_start: begin(arr: SPARCv8Triples), in_end: end(arr: SPARCv8Triples));
2773 break;
2774 case llvm::Triple::systemz:
2775 LibDirs.append(in_start: begin(arr: SystemZLibDirs), in_end: end(arr: SystemZLibDirs));
2776 TripleAliases.append(in_start: begin(arr: SystemZTriples), in_end: end(arr: SystemZTriples));
2777 break;
2778 default:
2779 // By default, just rely on the standard lib directories and the original
2780 // triple.
2781 break;
2782 }
2783
2784 // Also include the multiarch variant if it's different.
2785 if (TargetTriple.str() != BiarchTriple.str())
2786 BiarchTripleAliases.push_back(Elt: BiarchTriple.str());
2787}
2788
2789bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2790 const llvm::Triple &TargetTriple, const ArgList &Args,
2791 StringRef Path, bool NeedsBiarchSuffix) {
2792 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2793 DetectedMultilibs Detected;
2794
2795 // Android standalone toolchain could have multilibs for ARM and Thumb.
2796 // Debian mips multilibs behave more like the rest of the biarch ones,
2797 // so handle them there
2798 if (isArmOrThumbArch(Arch: TargetArch) && TargetTriple.isAndroid()) {
2799 // It should also work without multilibs in a simplified toolchain.
2800 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Result&: Detected);
2801 } else if (TargetTriple.isCSKY()) {
2802 findCSKYMultilibs(D, TargetTriple, Path, Args, Result&: Detected);
2803 } else if (TargetTriple.isMIPS()) {
2804 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Result&: Detected))
2805 return false;
2806 } else if (TargetTriple.isRISCV()) {
2807 findRISCVMultilibs(D, TargetTriple, Path, Args, Result&: Detected);
2808 } else if (isMSP430(Arch: TargetArch)) {
2809 findMSP430Multilibs(D, TargetTriple, Path, Args, Result&: Detected);
2810 } else if (TargetArch == llvm::Triple::avr) {
2811 // AVR has no multilibs.
2812 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2813 NeedsBiarchSuffix, Result&: Detected)) {
2814 return false;
2815 }
2816
2817 Multilibs = Detected.Multilibs;
2818 SelectedInstallation.SelectedMultilib =
2819 Detected.SelectedMultilibs.empty() ? Multilib()
2820 : Detected.SelectedMultilibs.back();
2821 BiarchSibling = Detected.BiarchSibling;
2822
2823 return true;
2824}
2825
2826bool Generic_GCC::GCCInstallationDetector::SelectGCCInstallationDirectory(
2827 const SmallVector<Generic_GCC::GCCInstallCandidate, 3> &Installations,
2828 const ArgList &Args,
2829 Generic_GCC::GCCInstallCandidate &SelectedInstallation) const {
2830 if (Installations.empty())
2831 return false;
2832
2833 SelectedInstallation =
2834 *max_element(Range: Installations, C: [](const auto &Max, const auto &I) {
2835 return I.Version > Max.Version;
2836 });
2837
2838 // FIXME Start selecting installation with libstdc++ in clang 22,
2839 // using the current way of selecting the installation as a fallback
2840 // only. For now, warn if the installation with libstdc++ differs
2841 // from SelectedInstallation.
2842 const GCCInstallCandidate *InstallWithIncludes = nullptr;
2843 for (const auto &I : Installations) {
2844 if ((!InstallWithIncludes || I.Version > InstallWithIncludes->Version) &&
2845 GCCInstallationHasLibStdcxxIncludePaths(GCCInstallation: I, DriverArgs: Args))
2846 InstallWithIncludes = &I;
2847 }
2848
2849 if (InstallWithIncludes && SelectedInstallation.GCCInstallPath !=
2850 InstallWithIncludes->GCCInstallPath)
2851 D.Diag(DiagID: diag::warn_drv_gcc_install_dir_libstdcxx)
2852 << InstallWithIncludes->GCCInstallPath
2853 << SelectedInstallation.GCCInstallPath;
2854
2855 // TODO Warn if SelectedInstallation does not contain libstdc++ includes
2856 // although compiler flags indicate that it is required (C++ compilation,
2857 // libstdc++ not explicitly disabled).
2858
2859 return true;
2860}
2861
2862void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2863 const llvm::Triple &TargetTriple, const ArgList &Args,
2864 const std::string &LibDir, StringRef CandidateTriple,
2865 bool NeedsBiarchSuffix, bool GCCDirExists, bool GCCCrossDirExists) {
2866 // Locations relative to the system lib directory where GCC's triple-specific
2867 // directories might reside.
2868 struct GCCLibSuffix {
2869 // Path from system lib directory to GCC triple-specific directory.
2870 std::string LibSuffix;
2871 // Path from GCC triple-specific directory back to system lib directory.
2872 // This is one '..' component per component in LibSuffix.
2873 StringRef ReversePath;
2874 // Whether this library suffix is relevant for the triple.
2875 bool Active;
2876 } Suffixes[] = {
2877 // This is the normal place.
2878 {.LibSuffix: "gcc/" + CandidateTriple.str(), .ReversePath: "../..", .Active: GCCDirExists},
2879
2880 // Debian puts cross-compilers in gcc-cross.
2881 {.LibSuffix: "gcc-cross/" + CandidateTriple.str(), .ReversePath: "../..", .Active: GCCCrossDirExists},
2882
2883 // The Freescale PPC SDK has the gcc libraries in
2884 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2885 // this on Freescale triples, though, since some systems put a *lot* of
2886 // files in that location, not just GCC installation data.
2887 {.LibSuffix: CandidateTriple.str(), .ReversePath: "..",
2888 .Active: TargetTriple.getVendor() == llvm::Triple::Freescale ||
2889 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}};
2890
2891 SmallVector<GCCInstallCandidate, 3> Installations;
2892 for (auto &Suffix : Suffixes) {
2893 if (!Suffix.Active)
2894 continue;
2895
2896 StringRef LibSuffix = Suffix.LibSuffix;
2897 std::error_code EC;
2898 for (llvm::vfs::directory_iterator
2899 LI = D.getVFS().dir_begin(Dir: LibDir + "/" + LibSuffix, EC),
2900 LE;
2901 !EC && LI != LE; LI = LI.increment(EC)) {
2902 StringRef VersionText = llvm::sys::path::filename(path: LI->path());
2903 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2904 if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2905 if (!CandidateGCCInstallPaths.insert(x: std::string(LI->path())).second)
2906 continue; // Saw this path before; no need to look at it again.
2907 if (CandidateVersion.isOlderThan(RHSMajor: 4, RHSMinor: 1, RHSPatch: 1))
2908 continue;
2909 if (CandidateVersion <= SelectedInstallation.Version && IsValid)
2910 continue;
2911
2912 if (!ScanGCCForMultilibs(TargetTriple, Args, Path: LI->path(),
2913 NeedsBiarchSuffix))
2914 continue;
2915
2916 GCCInstallCandidate Installation;
2917 Installation.Version = CandidateVersion;
2918 Installation.GCCTriple.setTriple(CandidateTriple);
2919 // FIXME: We hack together the directory name here instead of
2920 // using LI to ensure stable path separators across Windows and
2921 // Linux.
2922 Installation.GCCInstallPath =
2923 (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2924 Installation.GCCParentLibPath =
2925 (Installation.GCCInstallPath + "/../" + Suffix.ReversePath).str();
2926 Installation.SelectedMultilib = getMultilib();
2927
2928 Installations.push_back(Elt: Installation);
2929 }
2930 }
2931
2932 IsValid |=
2933 SelectGCCInstallationDirectory(Installations, Args, SelectedInstallation);
2934}
2935
2936bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs(
2937 const llvm::Triple &TargetTriple, const ArgList &Args,
2938 const SmallVectorImpl<StringRef> &CandidateTriples,
2939 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) {
2940 if (!D.getVFS().exists(Path: concat(Path: D.SysRoot, A: GentooConfigDir)))
2941 return false;
2942
2943 for (StringRef CandidateTriple : CandidateTriples) {
2944 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
2945 return true;
2946 }
2947
2948 for (StringRef CandidateTriple : CandidateBiarchTriples) {
2949 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, NeedsBiarchSuffix: true))
2950 return true;
2951 }
2952 return false;
2953}
2954
2955bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2956 const llvm::Triple &TargetTriple, const ArgList &Args,
2957 StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2958 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2959 D.getVFS().getBufferForFile(Name: concat(Path: D.SysRoot, A: GentooConfigDir,
2960 B: "/config-" + CandidateTriple.str()));
2961 if (File) {
2962 SmallVector<StringRef, 2> Lines;
2963 File.get()->getBuffer().split(A&: Lines, Separator: "\n");
2964 for (StringRef Line : Lines) {
2965 Line = Line.trim();
2966 // CURRENT=triple-version
2967 if (!Line.consume_front(Prefix: "CURRENT="))
2968 continue;
2969 // Process the config file pointed to by CURRENT.
2970 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile =
2971 D.getVFS().getBufferForFile(
2972 Name: concat(Path: D.SysRoot, A: GentooConfigDir, B: "/" + Line));
2973 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit(Separator: '-');
2974 // List of paths to scan for libraries.
2975 SmallVector<StringRef, 4> GentooScanPaths;
2976 // Scan the Config file to find installed GCC libraries path.
2977 // Typical content of the GCC config file:
2978 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/
2979 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32"
2980 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man"
2981 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info"
2982 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4"
2983 // We are looking for the paths listed in LDPATH=... .
2984 if (ConfigFile) {
2985 SmallVector<StringRef, 2> ConfigLines;
2986 ConfigFile.get()->getBuffer().split(A&: ConfigLines, Separator: "\n");
2987 for (StringRef ConfLine : ConfigLines) {
2988 ConfLine = ConfLine.trim();
2989 if (ConfLine.consume_front(Prefix: "LDPATH=")) {
2990 // Drop '"' from front and back if present.
2991 ConfLine.consume_back(Suffix: "\"");
2992 ConfLine.consume_front(Prefix: "\"");
2993 // Get all paths sperated by ':'
2994 ConfLine.split(A&: GentooScanPaths, Separator: ':', MaxSplit: -1, /*AllowEmpty*/ KeepEmpty: false);
2995 }
2996 }
2997 }
2998 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}.
2999 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/"
3000 + ActiveVersion.second.str();
3001 GentooScanPaths.push_back(Elt: StringRef(basePath));
3002
3003 // Scan all paths for GCC libraries.
3004 for (const auto &GentooScanPath : GentooScanPaths) {
3005 std::string GentooPath = concat(Path: D.SysRoot, A: GentooScanPath);
3006 if (D.getVFS().exists(Path: GentooPath + "/crtbegin.o")) {
3007 if (!ScanGCCForMultilibs(TargetTriple, Args, Path: GentooPath,
3008 NeedsBiarchSuffix))
3009 continue;
3010
3011 SelectedInstallation.Version =
3012 GCCVersion::Parse(VersionText: ActiveVersion.second);
3013 SelectedInstallation.GCCInstallPath = GentooPath;
3014 SelectedInstallation.GCCParentLibPath =
3015 GentooPath + std::string("/../../..");
3016 SelectedInstallation.GCCTriple.setTriple(ActiveVersion.first);
3017 IsValid = true;
3018 return true;
3019 }
3020 }
3021 }
3022 }
3023
3024 return false;
3025}
3026
3027Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
3028 const ArgList &Args)
3029 : ToolChain(D, Triple, Args), GCCInstallation(D),
3030 CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args),
3031 SYCLInstallation(D, Triple, Args) {
3032 getProgramPaths().push_back(Elt: getDriver().Dir);
3033}
3034
3035Generic_GCC::~Generic_GCC() {}
3036
3037Tool *Generic_GCC::getTool(Action::ActionClass AC) const {
3038 switch (AC) {
3039 case Action::PreprocessJobClass:
3040 if (!Preprocess)
3041 Preprocess.reset(p: new clang::driver::tools::gcc::Preprocessor(*this));
3042 return Preprocess.get();
3043 case Action::CompileJobClass:
3044 if (!Compile)
3045 Compile.reset(p: new tools::gcc::Compiler(*this));
3046 return Compile.get();
3047 default:
3048 return ToolChain::getTool(AC);
3049 }
3050}
3051
3052Tool *Generic_GCC::buildAssembler() const {
3053 return new tools::gnutools::Assembler(*this);
3054}
3055
3056Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
3057
3058void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
3059 // Print the information about how we detected the GCC installation.
3060 GCCInstallation.print(OS);
3061 CudaInstallation->print(OS);
3062 RocmInstallation->print(OS);
3063}
3064
3065ToolChain::UnwindTableLevel
3066Generic_GCC::getDefaultUnwindTableLevel(const ArgList &Args) const {
3067 switch (getArch()) {
3068 case llvm::Triple::aarch64:
3069 case llvm::Triple::aarch64_be:
3070 case llvm::Triple::amdgcn:
3071 case llvm::Triple::ppc:
3072 case llvm::Triple::ppcle:
3073 case llvm::Triple::ppc64:
3074 case llvm::Triple::ppc64le:
3075 case llvm::Triple::riscv32:
3076 case llvm::Triple::riscv64:
3077 case llvm::Triple::riscv32be:
3078 case llvm::Triple::riscv64be:
3079 case llvm::Triple::x86:
3080 case llvm::Triple::x86_64:
3081 return UnwindTableLevel::Asynchronous;
3082 default:
3083 return UnwindTableLevel::None;
3084 }
3085}
3086
3087bool Generic_GCC::isPICDefault() const {
3088 switch (getArch()) {
3089 case llvm::Triple::x86_64:
3090 return getTriple().isOSWindows();
3091 case llvm::Triple::mips64:
3092 case llvm::Triple::mips64el:
3093 return true;
3094 default:
3095 return false;
3096 }
3097}
3098
3099bool Generic_GCC::isPIEDefault(const llvm::opt::ArgList &Args) const {
3100 return false;
3101}
3102
3103bool Generic_GCC::isPICDefaultForced() const {
3104 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
3105}
3106
3107bool Generic_GCC::IsIntegratedAssemblerDefault() const {
3108 switch (getTriple().getArch()) {
3109 case llvm::Triple::nvptx:
3110 case llvm::Triple::nvptx64:
3111 case llvm::Triple::xcore:
3112 return false;
3113 default:
3114 return true;
3115 }
3116}
3117
3118void Generic_GCC::PushPPaths(ToolChain::path_list &PPaths) {
3119 // Cross-compiling binutils and GCC installations (vanilla and openSUSE at
3120 // least) put various tools in a triple-prefixed directory off of the parent
3121 // of the GCC installation. We use the GCC triple here to ensure that we end
3122 // up with tools that support the same amount of cross compiling as the
3123 // detected GCC installation. For example, if we find a GCC installation
3124 // targeting x86_64, but it is a bi-arch GCC installation, it can also be
3125 // used to target i386.
3126 if (GCCInstallation.isValid()) {
3127 PPaths.push_back(Elt: Twine(GCCInstallation.getParentLibPath() + "/../" +
3128 GCCInstallation.getTriple().str() + "/bin")
3129 .str());
3130 }
3131}
3132
3133void Generic_GCC::AddMultilibPaths(const Driver &D,
3134 const std::string &SysRoot,
3135 const std::string &OSLibDir,
3136 const std::string &MultiarchTriple,
3137 path_list &Paths) {
3138 // Add the multilib suffixed paths where they are available.
3139 if (GCCInstallation.isValid()) {
3140 const Multilib &GCCMultilib = GCCInstallation.getMultilib();
3141 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3142 const std::string &LibPath =
3143 std::string(GCCInstallation.getParentLibPath());
3144
3145 // Sourcery CodeBench MIPS toolchain holds some libraries under
3146 // a biarch-like suffix of the GCC installation.
3147 if (const auto &PathsCallback =
3148 GCCInstallation.getMultilibs().filePathsCallback())
3149 for (const auto &Path : PathsCallback(GCCMultilib))
3150 addPathIfExists(D, Path: GCCInstallation.getInstallPath() + Path, Paths);
3151
3152 // Add lib/gcc/$triple/$version, with an optional /multilib suffix.
3153 addPathIfExists(
3154 D, Path: GCCInstallation.getInstallPath() + GCCMultilib.gccSuffix(), Paths);
3155
3156 // Add lib/gcc/$triple/$libdir
3157 // For GCC built with --enable-version-specific-runtime-libs.
3158 addPathIfExists(D, Path: GCCInstallation.getInstallPath() + "/../" + OSLibDir,
3159 Paths);
3160
3161 // GCC cross compiling toolchains will install target libraries which ship
3162 // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as
3163 // any part of the GCC installation in
3164 // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat
3165 // debatable, but is the reality today. We need to search this tree even
3166 // when we have a sysroot somewhere else. It is the responsibility of
3167 // whomever is doing the cross build targeting a sysroot using a GCC
3168 // installation that is *not* within the system root to ensure two things:
3169 //
3170 // 1) Any DSOs that are linked in from this tree or from the install path
3171 // above must be present on the system root and found via an
3172 // appropriate rpath.
3173 // 2) There must not be libraries installed into
3174 // <prefix>/<triple>/<libdir> unless they should be preferred over
3175 // those within the system root.
3176 //
3177 // Note that this matches the GCC behavior. See the below comment for where
3178 // Clang diverges from GCC's behavior.
3179 addPathIfExists(D,
3180 Path: LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir +
3181 GCCMultilib.osSuffix(),
3182 Paths);
3183
3184 // If the GCC installation we found is inside of the sysroot, we want to
3185 // prefer libraries installed in the parent prefix of the GCC installation.
3186 // It is important to *not* use these paths when the GCC installation is
3187 // outside of the system root as that can pick up unintended libraries.
3188 // This usually happens when there is an external cross compiler on the
3189 // host system, and a more minimal sysroot available that is the target of
3190 // the cross. Note that GCC does include some of these directories in some
3191 // configurations but this seems somewhere between questionable and simply
3192 // a bug.
3193 if (StringRef(LibPath).starts_with(Prefix: SysRoot))
3194 addPathIfExists(D, Path: LibPath + "/../" + OSLibDir, Paths);
3195 }
3196}
3197
3198void Generic_GCC::AddMultiarchPaths(const Driver &D,
3199 const std::string &SysRoot,
3200 const std::string &OSLibDir,
3201 path_list &Paths) {
3202 if (GCCInstallation.isValid()) {
3203 const std::string &LibPath =
3204 std::string(GCCInstallation.getParentLibPath());
3205 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3206 const Multilib &Multilib = GCCInstallation.getMultilib();
3207 addPathIfExists(
3208 D, Path: LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(),
3209 Paths);
3210 }
3211}
3212
3213void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs,
3214 ArgStringList &CC1Args) const {
3215 // Add include directories specific to the selected multilib set and multilib.
3216 if (!GCCInstallation.isValid())
3217 return;
3218 // gcc TOOL_INCLUDE_DIR.
3219 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3220 std::string LibPath(GCCInstallation.getParentLibPath());
3221 ToolChain::addSystemInclude(DriverArgs, CC1Args,
3222 Path: Twine(LibPath) + "/../" + GCCTriple.str() +
3223 "/include");
3224
3225 const auto &Callback = GCCInstallation.getMultilibs().includeDirsCallback();
3226 if (Callback) {
3227 for (const auto &Path : Callback(GCCInstallation.getMultilib()))
3228 addExternCSystemIncludeIfExists(DriverArgs, CC1Args,
3229 Path: GCCInstallation.getInstallPath() + Path);
3230 }
3231}
3232
3233void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
3234 ArgStringList &CC1Args) const {
3235 if (DriverArgs.hasArg(Ids: options::OPT_nostdinc, Ids: options::OPT_nostdincxx,
3236 Ids: options::OPT_nostdlibinc))
3237 return;
3238
3239 switch (GetCXXStdlibType(Args: DriverArgs)) {
3240 case ToolChain::CST_Libcxx:
3241 addLibCxxIncludePaths(DriverArgs, CC1Args);
3242 break;
3243
3244 case ToolChain::CST_Libstdcxx:
3245 addLibStdCxxIncludePaths(DriverArgs, CC1Args);
3246 break;
3247 }
3248}
3249
3250void Generic_GCC::addSYCLIncludeArgs(const ArgList &DriverArgs,
3251 ArgStringList &CC1Args) const {
3252 SYCLInstallation->addSYCLIncludeArgs(DriverArgs, CC1Args);
3253}
3254
3255void
3256Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3257 llvm::opt::ArgStringList &CC1Args) const {
3258 const Driver &D = getDriver();
3259 std::string SysRoot = computeSysRoot();
3260 if (SysRoot.empty())
3261 SysRoot = llvm::sys::path::get_separator();
3262
3263 auto AddIncludePath = [&](StringRef Path, bool TargetDirRequired = false) {
3264 std::string Version = detectLibcxxVersion(IncludePath: Path);
3265 if (Version.empty())
3266 return false;
3267
3268 // First add the per-target include path if it exists.
3269 bool TargetDirExists = false;
3270 std::optional<std::string> TargetIncludeDir = getTargetSubDirPath(BaseDir: Path);
3271 if (TargetIncludeDir) {
3272 SmallString<128> TargetDir(*TargetIncludeDir);
3273 llvm::sys::path::append(path&: TargetDir, a: "c++", b: Version);
3274 if (D.getVFS().exists(Path: TargetDir)) {
3275 addSystemInclude(DriverArgs, CC1Args, Path: TargetDir);
3276 TargetDirExists = true;
3277 }
3278 }
3279 if (TargetDirRequired && !TargetDirExists)
3280 return false;
3281
3282 // Second add the generic one.
3283 SmallString<128> GenericDir(Path);
3284 llvm::sys::path::append(path&: GenericDir, a: "c++", b: Version);
3285 addSystemInclude(DriverArgs, CC1Args, Path: GenericDir);
3286 return true;
3287 };
3288
3289 // Android only uses the libc++ headers installed alongside the toolchain if
3290 // they contain an Android-specific target include path, otherwise they're
3291 // incompatible with the NDK libraries.
3292 SmallString<128> DriverIncludeDir(getDriver().Dir);
3293 llvm::sys::path::append(path&: DriverIncludeDir, a: "..", b: "include");
3294 if (AddIncludePath(DriverIncludeDir,
3295 /*TargetDirRequired=*/getTriple().isAndroid()))
3296 return;
3297 // If this is a development, non-installed, clang, libcxx will
3298 // not be found at ../include/c++ but it likely to be found at
3299 // one of the following two locations:
3300 SmallString<128> UsrLocalIncludeDir(SysRoot);
3301 llvm::sys::path::append(path&: UsrLocalIncludeDir, a: "usr", b: "local", c: "include");
3302 if (AddIncludePath(UsrLocalIncludeDir))
3303 return;
3304 SmallString<128> UsrIncludeDir(SysRoot);
3305 llvm::sys::path::append(path&: UsrIncludeDir, a: "usr", b: "include");
3306 if (AddIncludePath(UsrIncludeDir))
3307 return;
3308}
3309
3310static bool addLibStdCXXIncludePaths(llvm::vfs::FileSystem &vfs,
3311 Twine IncludeDir, StringRef Triple,
3312 Twine IncludeSuffix,
3313 const llvm::opt::ArgList &DriverArgs,
3314 llvm::opt::ArgStringList &CC1Args,
3315 bool DetectDebian = false) {
3316
3317 if (!vfs.exists(Path: IncludeDir))
3318 return false;
3319
3320 // Debian native gcc uses g++-multiarch-incdir.diff which uses
3321 // include/x86_64-linux-gnu/c++/10$IncludeSuffix instead of
3322 // include/c++/10/x86_64-linux-gnu$IncludeSuffix.
3323 std::string Dir = IncludeDir.str();
3324 StringRef Include =
3325 llvm::sys::path::parent_path(path: llvm::sys::path::parent_path(path: Dir));
3326 std::string Path =
3327 (Include + "/" + Triple + Dir.substr(pos: Include.size()) + IncludeSuffix)
3328 .str();
3329 if (DetectDebian && !vfs.exists(Path))
3330 return false;
3331
3332 // GPLUSPLUS_INCLUDE_DIR
3333 ToolChain::addSystemInclude(DriverArgs, CC1Args, Path: IncludeDir);
3334 // GPLUSPLUS_TOOL_INCLUDE_DIR. If Triple is not empty, add a target-dependent
3335 // include directory.
3336 if (DetectDebian)
3337 ToolChain::addSystemInclude(DriverArgs, CC1Args, Path);
3338 else if (!Triple.empty())
3339 ToolChain::addSystemInclude(DriverArgs, CC1Args,
3340 Path: IncludeDir + "/" + Triple + IncludeSuffix);
3341 // GPLUSPLUS_BACKWARD_INCLUDE_DIR
3342 ToolChain::addSystemInclude(DriverArgs, CC1Args, Path: IncludeDir + "/backward");
3343 return true;
3344}
3345
3346bool Generic_GCC::addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple,
3347 Twine IncludeSuffix,
3348 const llvm::opt::ArgList &DriverArgs,
3349 llvm::opt::ArgStringList &CC1Args,
3350 bool DetectDebian) const {
3351 return ::addLibStdCXXIncludePaths(vfs&: getVFS(), IncludeDir, Triple, IncludeSuffix,
3352 DriverArgs, CC1Args, DetectDebian);
3353}
3354
3355bool Generic_GCC::GCCInstallCandidate::addGCCLibStdCxxIncludePaths(
3356 llvm::vfs::FileSystem &vfs, const llvm::opt::ArgList &DriverArgs,
3357 llvm::opt::ArgStringList &CC1Args, StringRef DebianMultiarch) const {
3358
3359 // By default, look for the C++ headers in an include directory adjacent to
3360 // the lib directory of the GCC installation. Note that this is expect to be
3361 // equivalent to '/usr/include/c++/X.Y' in almost all cases.
3362 StringRef LibDir = getParentLibPath();
3363 StringRef InstallDir = getInstallPath();
3364 StringRef TripleStr = getTriple().str();
3365 const Multilib &Multilib = getMultilib();
3366 const GCCVersion &Version = getVersion();
3367
3368 // Try /../$triple/include/c++/$version (gcc --print-multiarch is not empty).
3369 if (::addLibStdCXXIncludePaths(
3370 vfs,
3371 IncludeDir: LibDir.str() + "/../" + TripleStr + "/include/c++/" + Version.Text,
3372 Triple: TripleStr, IncludeSuffix: Multilib.includeSuffix(), DriverArgs, CC1Args))
3373 return true;
3374
3375 // Try /gcc/$triple/$version/include/c++/ (gcc --print-multiarch is not
3376 // empty). Like above but for GCC built with
3377 // --enable-version-specific-runtime-libs.
3378 if (::addLibStdCXXIncludePaths(vfs,
3379 IncludeDir: LibDir.str() + "/gcc/" + TripleStr + "/" +
3380 Version.Text + "/include/c++/",
3381 Triple: TripleStr, IncludeSuffix: Multilib.includeSuffix(),
3382 DriverArgs, CC1Args))
3383 return true;
3384
3385 // Detect Debian g++-multiarch-incdir.diff.
3386 if (::addLibStdCXXIncludePaths(
3387 vfs, IncludeDir: LibDir.str() + "/../include/c++/" + Version.Text,
3388 Triple: DebianMultiarch, IncludeSuffix: Multilib.includeSuffix(), DriverArgs, CC1Args,
3389 /*Debian=*/DetectDebian: true))
3390 return true;
3391
3392 // Try /../include/c++/$version (gcc --print-multiarch is empty).
3393 if (::addLibStdCXXIncludePaths(
3394 vfs, IncludeDir: LibDir.str() + "/../include/c++/" + Version.Text, Triple: TripleStr,
3395 IncludeSuffix: Multilib.includeSuffix(), DriverArgs, CC1Args))
3396 return true;
3397
3398 // Otherwise, fall back on a bunch of options which don't use multiarch
3399 // layouts for simplicity.
3400 const std::string LibStdCXXIncludePathCandidates[] = {
3401 // Gentoo is weird and places its headers inside the GCC install,
3402 // so if the first attempt to find the headers fails, try these patterns.
3403 InstallDir.str() + "/include/g++-v" + Version.Text,
3404 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." +
3405 Version.MinorStr,
3406 InstallDir.str() + "/include/g++-v" + Version.MajorStr,
3407 };
3408
3409 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) {
3410 if (::addLibStdCXXIncludePaths(vfs, IncludeDir: IncludePath, Triple: TripleStr,
3411 IncludeSuffix: Multilib.includeSuffix(), DriverArgs,
3412 CC1Args))
3413 return true;
3414 }
3415 return false;
3416}
3417
3418bool Generic_GCC::GCCInstallationDetector::
3419 GCCInstallationHasLibStdcxxIncludePaths(
3420 const GCCInstallCandidate &GCCInstallation,
3421 const llvm::opt::ArgList &DriverArgs) const {
3422 StringRef DebianMultiarch =
3423 TripleToDebianMultiarch(GCCInstallation.getTriple());
3424
3425 // The following function checks for libstdc++ include paths and
3426 // adds them to the provided argument list. Here we just need the
3427 // check.
3428 llvm::opt::ArgStringList dummyCC1Args;
3429 return GCCInstallation.addGCCLibStdCxxIncludePaths(
3430 vfs&: D.getVFS(), DriverArgs, CC1Args&: dummyCC1Args, DebianMultiarch);
3431}
3432
3433bool Generic_GCC::addGCCLibStdCxxIncludePaths(
3434 const llvm::opt::ArgList &DriverArgs,
3435 llvm::opt::ArgStringList &CC1Args) const {
3436 assert(GCCInstallation.isValid());
3437
3438 // Detect Debian g++-multiarch-incdir.diff.
3439 StringRef DebianMultiarch =
3440 GCCInstallation.TripleToDebianMultiarch(GCCInstallation.getTriple());
3441
3442 return GCCInstallation.getSelectedInstallation().addGCCLibStdCxxIncludePaths(
3443 vfs&: getVFS(), DriverArgs, CC1Args, DebianMultiarch);
3444}
3445
3446void
3447Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3448 llvm::opt::ArgStringList &CC1Args) const {
3449 if (!GCCInstallation.isValid())
3450 return;
3451
3452 GCCInstallation.getSelectedInstallation().addGCCLibStdCxxIncludePaths(
3453 vfs&: getVFS(), DriverArgs, CC1Args, DebianMultiarch: GCCInstallation.getTriple().str());
3454}
3455
3456llvm::opt::DerivedArgList *
3457Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, BoundArch BA,
3458 Action::OffloadKind DeviceOffloadKind) const {
3459 if (DeviceOffloadKind == Action::OFK_None ||
3460 DeviceOffloadKind == Action::OFK_Host)
3461 return nullptr;
3462
3463 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
3464
3465 // Filter all the arguments we don't care passing to the offloading
3466 // toolchain as they can mess up with the creation of a shared library.
3467 const llvm::DenseSet<unsigned> OpenMPFiltered{
3468 options::OPT_shared, options::OPT_dynamic, options::OPT_static,
3469 options::OPT_fPIE, options::OPT_fno_PIE, options::OPT_fpie,
3470 options::OPT_fno_pie};
3471 for (auto *A : Args)
3472 if (DeviceOffloadKind != Action::OFK_OpenMP ||
3473 !OpenMPFiltered.contains(V: A->getOption().getID()))
3474 DAL->append(A);
3475
3476 // Request a shared library for CPU offloading. Given that these options
3477 // are decided implicitly, they do not refer to any base argument.
3478 const OptTable &Opts = getDriver().getOpts();
3479 if (DeviceOffloadKind == Action::OFK_OpenMP) {
3480 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opt: Opts.getOption(Opt: options::OPT_shared));
3481 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opt: Opts.getOption(Opt: options::OPT_fPIC));
3482 }
3483
3484 // Add the bound architecture to the arguments list if present.
3485 if (!BA.empty()) {
3486 options::ID Opt = getTriple().isARM() || getTriple().isPPC() ||
3487 getTriple().isAArch64() || getTriple().isAMDGPU()
3488 ? options::OPT_mcpu_EQ
3489 : options::OPT_march_EQ;
3490 DAL->eraseArg(Id: Opt);
3491 DAL->AddJoinedArg(BaseArg: nullptr, Opt: Opts.getOption(Opt), Value: BA.ArchName);
3492 }
3493
3494 return DAL;
3495}
3496
3497void Generic_ELF::anchor() {}
3498
3499void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
3500 ArgStringList &CC1Args, BoundArch BA,
3501 Action::OffloadKind) const {
3502 if (!DriverArgs.hasFlag(Pos: options::OPT_fuse_init_array,
3503 Neg: options::OPT_fno_use_init_array, Default: true))
3504 CC1Args.push_back(Elt: "-fno-use-init-array");
3505}
3506