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