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/Options.h"
24#include "clang/Driver/Tool.h"
25#include "clang/Driver/ToolChain.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 getStaticPIE(const ArgList &Args, const ToolChain &TC) {
223 bool HasStaticPIE = Args.hasArg(Ids: options::OPT_static_pie);
224 if (HasStaticPIE && Args.hasArg(Ids: options::OPT_no_pie)) {
225 const Driver &D = TC.getDriver();
226 const llvm::opt::OptTable &Opts = D.getOpts();
227 StringRef StaticPIEName = Opts.getOptionName(id: options::OPT_static_pie);
228 StringRef NoPIEName = Opts.getOptionName(id: options::OPT_nopie);
229 D.Diag(DiagID: diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName;
230 }
231 return HasStaticPIE;
232}
233
234static bool getStatic(const ArgList &Args) {
235 return Args.hasArg(Ids: options::OPT_static) &&
236 !Args.hasArg(Ids: options::OPT_static_pie);
237}
238
239void tools::gnutools::StaticLibTool::ConstructJob(
240 Compilation &C, const JobAction &JA, const InputInfo &Output,
241 const InputInfoList &Inputs, const ArgList &Args,
242 const char *LinkingOutput) const {
243 const Driver &D = getToolChain().getDriver();
244
245 // Silence warning for "clang -g foo.o -o foo"
246 Args.ClaimAllArgs(Id0: options::OPT_g_Group);
247 // and "clang -emit-llvm foo.o -o foo"
248 Args.ClaimAllArgs(Id0: options::OPT_emit_llvm);
249 // and for "clang -w foo.o -o foo". Other warning options are already
250 // handled somewhere else.
251 Args.ClaimAllArgs(Id0: options::OPT_w);
252 // Silence warnings when linking C code with a C++ '-stdlib' argument.
253 Args.ClaimAllArgs(Id0: options::OPT_stdlib_EQ);
254
255 // ar tool command "llvm-ar <options> <output_file> <input_files>".
256 ArgStringList CmdArgs;
257 // Create and insert file members with a deterministic index.
258 CmdArgs.push_back(Elt: "rcsD");
259 CmdArgs.push_back(Elt: Output.getFilename());
260
261 for (const auto &II : Inputs) {
262 if (II.isFilename()) {
263 CmdArgs.push_back(Elt: II.getFilename());
264 }
265 }
266
267 // Delete old output archive file if it already exists before generating a new
268 // archive file.
269 auto OutputFileName = Output.getFilename();
270 if (Output.isFilename() && llvm::sys::fs::exists(Path: OutputFileName)) {
271 if (std::error_code EC = llvm::sys::fs::remove(path: OutputFileName)) {
272 D.Diag(DiagID: diag::err_drv_unable_to_remove_file) << EC.message();
273 return;
274 }
275 }
276
277 const char *Exec = Args.MakeArgString(Str: getToolChain().GetStaticLibToolPath());
278 C.addCommand(C: std::make_unique<Command>(args: JA, args: *this,
279 args: ResponseFileSupport::AtFileCurCP(),
280 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
281}
282
283void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
284 const InputInfo &Output,
285 const InputInfoList &Inputs,
286 const ArgList &Args,
287 const char *LinkingOutput) const {
288 // FIXME: The Linker class constructor takes a ToolChain and not a
289 // Generic_ELF, so the static_cast might return a reference to a invalid
290 // instance (see PR45061). Ideally, the Linker constructor needs to take a
291 // Generic_ELF instead.
292 const auto &ToolChain = static_cast<const Generic_ELF &>(getToolChain());
293 const Driver &D = ToolChain.getDriver();
294
295 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
296
297 const llvm::Triple::ArchType Arch = ToolChain.getArch();
298 const bool isOHOSFamily = ToolChain.getTriple().isOHOSFamily();
299 const bool isAndroid = ToolChain.getTriple().isAndroid();
300 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
301 const bool IsVE = ToolChain.getTriple().isVE();
302 const bool IsStaticPIE = getStaticPIE(Args, TC: ToolChain);
303 const bool IsStatic = getStatic(Args);
304 const bool HasCRTBeginEndFiles =
305 ToolChain.getTriple().hasEnvironment() ||
306 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
307
308 ArgStringList CmdArgs;
309
310 // Silence warning for "clang -g foo.o -o foo"
311 Args.ClaimAllArgs(Id0: options::OPT_g_Group);
312 // and "clang -emit-llvm foo.o -o foo"
313 Args.ClaimAllArgs(Id0: options::OPT_emit_llvm);
314 // and for "clang -w foo.o -o foo". Other warning options are already
315 // handled somewhere else.
316 Args.ClaimAllArgs(Id0: options::OPT_w);
317
318 if (!D.SysRoot.empty())
319 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "--sysroot=" + D.SysRoot));
320
321 if (Args.hasArg(Ids: options::OPT_s))
322 CmdArgs.push_back(Elt: "-s");
323
324 if (Triple.isARM() || Triple.isThumb()) {
325 bool IsBigEndian = arm::isARMBigEndian(Triple, Args);
326 if (IsBigEndian)
327 arm::appendBE8LinkFlag(Args, CmdArgs, Triple);
328 CmdArgs.push_back(Elt: IsBigEndian ? "-EB" : "-EL");
329 } else if (Triple.isAArch64()) {
330 CmdArgs.push_back(Elt: Arch == llvm::Triple::aarch64_be ? "-EB" : "-EL");
331 }
332
333 // Most Android ARM64 targets should enable the linker fix for erratum
334 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
335 if (Arch == llvm::Triple::aarch64 && (isAndroid || isOHOSFamily) &&
336 Args.hasFlag(Pos: options::OPT_mfix_cortex_a53_843419,
337 Neg: options::OPT_mno_fix_cortex_a53_843419, Default: true)) {
338 std::string CPU = getCPUName(D, Args, T: Triple);
339 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
340 CmdArgs.push_back(Elt: "--fix-cortex-a53-843419");
341 }
342
343 ToolChain.addExtraOpts(CmdArgs);
344
345 CmdArgs.push_back(Elt: "--eh-frame-hdr");
346
347 if (const char *LDMOption = getLDMOption(T: ToolChain.getTriple(), Args)) {
348 CmdArgs.push_back(Elt: "-m");
349 CmdArgs.push_back(Elt: LDMOption);
350 } else {
351 D.Diag(DiagID: diag::err_target_unknown_triple) << Triple.str();
352 return;
353 }
354
355 if (Triple.isLoongArch() || Triple.isRISCV()) {
356 CmdArgs.push_back(Elt: "-X");
357 if (Args.hasArg(Ids: options::OPT_mno_relax))
358 CmdArgs.push_back(Elt: "--no-relax");
359 }
360
361 const bool IsShared = Args.hasArg(Ids: options::OPT_shared);
362 if (IsShared)
363 CmdArgs.push_back(Elt: "-shared");
364 bool IsPIE = false;
365 if (IsStaticPIE) {
366 CmdArgs.push_back(Elt: "-static");
367 CmdArgs.push_back(Elt: "-pie");
368 CmdArgs.push_back(Elt: "--no-dynamic-linker");
369 CmdArgs.push_back(Elt: "-z");
370 CmdArgs.push_back(Elt: "text");
371 } else if (IsStatic) {
372 CmdArgs.push_back(Elt: "-static");
373 } else if (!Args.hasArg(Ids: options::OPT_r)) {
374 if (Args.hasArg(Ids: options::OPT_rdynamic))
375 CmdArgs.push_back(Elt: "-export-dynamic");
376 if (!IsShared) {
377 IsPIE = Args.hasFlag(Pos: options::OPT_pie, Neg: options::OPT_no_pie,
378 Default: ToolChain.isPIEDefault(Args));
379 if (IsPIE)
380 CmdArgs.push_back(Elt: "-pie");
381 CmdArgs.push_back(Elt: "-dynamic-linker");
382 CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine(D.DyldPrefix) +
383 ToolChain.getDynamicLinker(Args)));
384 }
385 }
386
387 CmdArgs.push_back(Elt: "-o");
388 CmdArgs.push_back(Elt: Output.getFilename());
389
390 if (!Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nostartfiles,
391 Ids: options::OPT_r)) {
392 if (!isAndroid && !IsIAMCU) {
393 const char *crt1 = nullptr;
394 if (!Args.hasArg(Ids: options::OPT_shared)) {
395 if (Args.hasArg(Ids: options::OPT_pg))
396 crt1 = "gcrt1.o";
397 else if (IsPIE)
398 crt1 = "Scrt1.o";
399 else if (IsStaticPIE)
400 crt1 = "rcrt1.o";
401 else
402 crt1 = "crt1.o";
403 }
404 if (crt1)
405 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: crt1)));
406
407 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crti.o")));
408 }
409
410 if (IsVE) {
411 CmdArgs.push_back(Elt: "-z");
412 CmdArgs.push_back(Elt: "max-page-size=0x4000000");
413 }
414
415 if (IsIAMCU)
416 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crt0.o")));
417 else if (HasCRTBeginEndFiles) {
418 std::string P;
419 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
420 !isAndroid) {
421 std::string crtbegin = ToolChain.getCompilerRT(Args, Component: "crtbegin",
422 Type: ToolChain::FT_Object);
423 if (ToolChain.getVFS().exists(Path: crtbegin))
424 P = crtbegin;
425 }
426 if (P.empty()) {
427 const char *crtbegin;
428 if (Args.hasArg(Ids: options::OPT_shared))
429 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
430 else if (IsStatic)
431 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
432 else if (IsPIE || IsStaticPIE)
433 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
434 else
435 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
436 P = ToolChain.GetFilePath(Name: crtbegin);
437 }
438 CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
439 }
440
441 // Add crtfastmath.o if available and fast math is enabled.
442 ToolChain.addFastMathRuntimeIfAvailable(Args, CmdArgs);
443
444 if (isAndroid && Args.hasFlag(Pos: options::OPT_fandroid_pad_segment,
445 Neg: options::OPT_fno_android_pad_segment, Default: false))
446 CmdArgs.push_back(
447 Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crt_pad_segment.o")));
448 }
449
450 Args.addAllArgs(Output&: CmdArgs, Ids: {options::OPT_L, options::OPT_u});
451
452 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
453
454 if (D.isUsingLTO())
455 addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs,
456 IsThinLTO: D.getLTOMode() == LTOK_Thin);
457
458 if (Args.hasArg(Ids: options::OPT_Z_Xlinker__no_demangle))
459 CmdArgs.push_back(Elt: "--no-demangle");
460
461 bool NeedsSanitizerDeps = addSanitizerRuntimes(TC: ToolChain, Args, CmdArgs);
462 bool NeedsXRayDeps = addXRayRuntime(TC: ToolChain, Args, CmdArgs);
463 addLinkerCompressDebugSectionsOption(TC: ToolChain, Args, CmdArgs);
464 AddLinkerInputs(TC: ToolChain, Inputs, Args, CmdArgs, JA);
465
466 addHIPRuntimeLibArgs(TC: ToolChain, C, Args, CmdArgs);
467
468 // The profile runtime also needs access to system libraries.
469 getToolChain().addProfileRTLibs(Args, CmdArgs);
470
471 if (D.CCCIsCXX() &&
472 !Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nodefaultlibs,
473 Ids: options::OPT_r)) {
474 if (ToolChain.ShouldLinkCXXStdlib(Args)) {
475 bool OnlyLibstdcxxStatic = Args.hasArg(Ids: options::OPT_static_libstdcxx) &&
476 !Args.hasArg(Ids: options::OPT_static);
477 if (OnlyLibstdcxxStatic)
478 CmdArgs.push_back(Elt: "-Bstatic");
479 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
480 if (OnlyLibstdcxxStatic)
481 CmdArgs.push_back(Elt: "-Bdynamic");
482 }
483 CmdArgs.push_back(Elt: "-lm");
484 }
485
486 // Silence warnings when linking C code with a C++ '-stdlib' argument.
487 Args.ClaimAllArgs(Id0: options::OPT_stdlib_EQ);
488
489 // Additional linker set-up and flags for Fortran. This is required in order
490 // to generate executables. As Fortran runtime depends on the C runtime,
491 // these dependencies need to be listed before the C runtime below (i.e.
492 // AddRunTimeLibs).
493 if (D.IsFlangMode() &&
494 !Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nodefaultlibs)) {
495 ToolChain.addFortranRuntimeLibraryPath(Args, CmdArgs);
496 ToolChain.addFortranRuntimeLibs(Args, CmdArgs);
497 CmdArgs.push_back(Elt: "-lm");
498 }
499
500 if (!Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_r)) {
501 if (!Args.hasArg(Ids: options::OPT_nodefaultlibs)) {
502 if (IsStatic || IsStaticPIE)
503 CmdArgs.push_back(Elt: "--start-group");
504
505 if (NeedsSanitizerDeps)
506 linkSanitizerRuntimeDeps(TC: ToolChain, Args, CmdArgs);
507
508 if (NeedsXRayDeps)
509 linkXRayRuntimeDeps(TC: ToolChain, Args, CmdArgs);
510
511 bool WantPthread = Args.hasArg(Ids: options::OPT_pthread) ||
512 Args.hasArg(Ids: options::OPT_pthreads);
513
514 // Use the static OpenMP runtime with -static-openmp
515 bool StaticOpenMP = Args.hasArg(Ids: options::OPT_static_openmp) &&
516 !Args.hasArg(Ids: options::OPT_static);
517
518 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
519 // require librt. Most modern Linux platforms do, but some may not.
520 if (addOpenMPRuntime(C, CmdArgs, TC: ToolChain, Args, ForceStaticHostRuntime: StaticOpenMP,
521 IsOffloadingHost: JA.isHostOffloading(OKind: Action::OFK_OpenMP),
522 /* GompNeedsRT= */ true))
523 // OpenMP runtimes implies pthreads when using the GNU toolchain.
524 // FIXME: Does this really make sense for all GNU toolchains?
525 WantPthread = true;
526
527 AddRunTimeLibs(TC: ToolChain, D, CmdArgs, Args);
528
529 // LLVM support for atomics on 32-bit SPARC V8+ is incomplete, so
530 // forcibly link with libatomic as a workaround.
531 // TODO: Issue #41880 and D118021.
532 if (getToolChain().getTriple().getArch() == llvm::Triple::sparc) {
533 CmdArgs.push_back(Elt: "--push-state");
534 CmdArgs.push_back(Elt: "--as-needed");
535 CmdArgs.push_back(Elt: "-latomic");
536 CmdArgs.push_back(Elt: "--pop-state");
537 }
538
539 // We don't need libpthread neither for bionic (Android) nor for musl,
540 // (used by OHOS as runtime library).
541 if (WantPthread && !isAndroid && !isOHOSFamily)
542 CmdArgs.push_back(Elt: "-lpthread");
543
544 if (Args.hasArg(Ids: options::OPT_fsplit_stack))
545 CmdArgs.push_back(Elt: "--wrap=pthread_create");
546
547 if (!Args.hasArg(Ids: options::OPT_nolibc))
548 CmdArgs.push_back(Elt: "-lc");
549
550 // Add IAMCU specific libs, if needed.
551 if (IsIAMCU)
552 CmdArgs.push_back(Elt: "-lgloss");
553
554 if (IsStatic || IsStaticPIE)
555 CmdArgs.push_back(Elt: "--end-group");
556 else
557 AddRunTimeLibs(TC: ToolChain, D, CmdArgs, Args);
558
559 // Add IAMCU specific libs (outside the group), if needed.
560 if (IsIAMCU) {
561 CmdArgs.push_back(Elt: "--as-needed");
562 CmdArgs.push_back(Elt: "-lsoftfp");
563 CmdArgs.push_back(Elt: "--no-as-needed");
564 }
565 }
566
567 if (!Args.hasArg(Ids: options::OPT_nostartfiles) && !IsIAMCU) {
568 if (HasCRTBeginEndFiles) {
569 std::string P;
570 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
571 !isAndroid) {
572 std::string crtend = ToolChain.getCompilerRT(Args, Component: "crtend",
573 Type: ToolChain::FT_Object);
574 if (ToolChain.getVFS().exists(Path: crtend))
575 P = crtend;
576 }
577 if (P.empty()) {
578 const char *crtend;
579 if (Args.hasArg(Ids: options::OPT_shared))
580 crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
581 else if (IsPIE || IsStaticPIE)
582 crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
583 else
584 crtend = isAndroid ? "crtend_android.o" : "crtend.o";
585 P = ToolChain.GetFilePath(Name: crtend);
586 }
587 CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
588 }
589 if (!isAndroid)
590 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crtn.o")));
591 }
592 }
593
594 Args.addAllArgs(Output&: CmdArgs, Ids: {options::OPT_T, options::OPT_t});
595
596 const char *Exec = Args.MakeArgString(Str: ToolChain.GetLinkerPath());
597 C.addCommand(C: std::make_unique<Command>(args: JA, args: *this,
598 args: ResponseFileSupport::AtFileCurCP(),
599 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
600}
601
602void tools::gnutools::Assembler::ConstructJob(Compilation &C,
603 const JobAction &JA,
604 const InputInfo &Output,
605 const InputInfoList &Inputs,
606 const ArgList &Args,
607 const char *LinkingOutput) const {
608 const auto &D = getToolChain().getDriver();
609
610 claimNoWarnArgs(Args);
611
612 ArgStringList CmdArgs;
613
614 llvm::Reloc::Model RelocationModel;
615 unsigned PICLevel;
616 bool IsPIE;
617 const char *DefaultAssembler = "as";
618 // Enforce GNU as on Solaris; the native assembler's input syntax isn't fully
619 // compatible.
620 if (getToolChain().getTriple().isOSSolaris())
621 DefaultAssembler = "gas";
622 std::tie(args&: RelocationModel, args&: PICLevel, args&: IsPIE) =
623 ParsePICArgs(ToolChain: getToolChain(), Args);
624
625 if (const Arg *A = Args.getLastArg(Ids: options::OPT_gz, Ids: options::OPT_gz_EQ)) {
626 if (A->getOption().getID() == options::OPT_gz) {
627 CmdArgs.push_back(Elt: "--compress-debug-sections");
628 } else {
629 StringRef Value = A->getValue();
630 if (Value == "none" || Value == "zlib" || Value == "zstd") {
631 CmdArgs.push_back(
632 Elt: Args.MakeArgString(Str: "--compress-debug-sections=" + Twine(Value)));
633 } else {
634 D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
635 << A->getSpelling() << Value;
636 }
637 }
638 }
639
640 switch (getToolChain().getArch()) {
641 default:
642 break;
643 // Add --32/--64 to make sure we get the format we want.
644 // This is incomplete
645 case llvm::Triple::x86:
646 CmdArgs.push_back(Elt: "--32");
647 break;
648 case llvm::Triple::x86_64:
649 if (getToolChain().getTriple().isX32())
650 CmdArgs.push_back(Elt: "--x32");
651 else
652 CmdArgs.push_back(Elt: "--64");
653 break;
654 case llvm::Triple::ppc: {
655 CmdArgs.push_back(Elt: "-a32");
656 CmdArgs.push_back(Elt: "-mppc");
657 CmdArgs.push_back(Elt: "-mbig-endian");
658 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
659 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
660 break;
661 }
662 case llvm::Triple::ppcle: {
663 CmdArgs.push_back(Elt: "-a32");
664 CmdArgs.push_back(Elt: "-mppc");
665 CmdArgs.push_back(Elt: "-mlittle-endian");
666 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
667 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
668 break;
669 }
670 case llvm::Triple::ppc64: {
671 CmdArgs.push_back(Elt: "-a64");
672 CmdArgs.push_back(Elt: "-mppc64");
673 CmdArgs.push_back(Elt: "-mbig-endian");
674 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
675 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
676 break;
677 }
678 case llvm::Triple::ppc64le: {
679 CmdArgs.push_back(Elt: "-a64");
680 CmdArgs.push_back(Elt: "-mppc64");
681 CmdArgs.push_back(Elt: "-mlittle-endian");
682 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
683 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
684 break;
685 }
686 case llvm::Triple::riscv32:
687 case llvm::Triple::riscv64: {
688 StringRef ABIName = riscv::getRISCVABI(Args, Triple: getToolChain().getTriple());
689 CmdArgs.push_back(Elt: "-mabi");
690 CmdArgs.push_back(Elt: ABIName.data());
691 std::string MArchName =
692 riscv::getRISCVArch(Args, Triple: getToolChain().getTriple());
693 CmdArgs.push_back(Elt: "-march");
694 CmdArgs.push_back(Elt: Args.MakeArgString(Str: MArchName));
695 if (!Args.hasFlag(Pos: options::OPT_mrelax, Neg: options::OPT_mno_relax, Default: true))
696 Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_mrelax, Neg: options::OPT_mno_relax);
697 break;
698 }
699 case llvm::Triple::sparc:
700 case llvm::Triple::sparcel: {
701 CmdArgs.push_back(Elt: "-32");
702 std::string CPU = getCPUName(D, Args, T: getToolChain().getTriple());
703 CmdArgs.push_back(
704 Elt: sparc::getSparcAsmModeForCPU(Name: CPU, Triple: getToolChain().getTriple()));
705 AddAssemblerKPIC(ToolChain: getToolChain(), Args, CmdArgs);
706 break;
707 }
708 case llvm::Triple::sparcv9: {
709 CmdArgs.push_back(Elt: "-64");
710 std::string CPU = getCPUName(D, Args, T: getToolChain().getTriple());
711 CmdArgs.push_back(
712 Elt: sparc::getSparcAsmModeForCPU(Name: CPU, Triple: getToolChain().getTriple()));
713 AddAssemblerKPIC(ToolChain: getToolChain(), Args, CmdArgs);
714 break;
715 }
716 case llvm::Triple::arm:
717 case llvm::Triple::armeb:
718 case llvm::Triple::thumb:
719 case llvm::Triple::thumbeb: {
720 const llvm::Triple &Triple2 = getToolChain().getTriple();
721 CmdArgs.push_back(Elt: arm::isARMBigEndian(Triple: Triple2, Args) ? "-EB" : "-EL");
722 switch (Triple2.getSubArch()) {
723 case llvm::Triple::ARMSubArch_v7:
724 CmdArgs.push_back(Elt: "-mfpu=neon");
725 break;
726 case llvm::Triple::ARMSubArch_v8:
727 CmdArgs.push_back(Elt: "-mfpu=crypto-neon-fp-armv8");
728 break;
729 default:
730 break;
731 }
732
733 switch (arm::getARMFloatABI(TC: getToolChain(), Args)) {
734 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
735 case arm::FloatABI::Soft:
736 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mfloat-abi=soft"));
737 break;
738 case arm::FloatABI::SoftFP:
739 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mfloat-abi=softfp"));
740 break;
741 case arm::FloatABI::Hard:
742 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mfloat-abi=hard"));
743 break;
744 }
745
746 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_march_EQ);
747 normalizeCPUNamesForAssembler(Args, CmdArgs);
748
749 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mfpu_EQ);
750 // The integrated assembler doesn't implement e_flags setting behavior for
751 // -meabi=gnu (gcc -mabi={apcs-gnu,atpcs} passes -meabi=gnu to gas). For
752 // compatibility we accept but warn.
753 if (Arg *A = Args.getLastArgNoClaim(Ids: options::OPT_mabi_EQ))
754 A->ignoreTargetSpecific();
755 break;
756 }
757 case llvm::Triple::aarch64:
758 case llvm::Triple::aarch64_be: {
759 CmdArgs.push_back(
760 Elt: getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL");
761 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_march_EQ);
762 normalizeCPUNamesForAssembler(Args, CmdArgs);
763
764 break;
765 }
766 // TODO: handle loongarch32.
767 case llvm::Triple::loongarch64: {
768 StringRef ABIName =
769 loongarch::getLoongArchABI(D, Args, Triple: getToolChain().getTriple());
770 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mabi=" + ABIName));
771 break;
772 }
773 case llvm::Triple::mips:
774 case llvm::Triple::mipsel:
775 case llvm::Triple::mips64:
776 case llvm::Triple::mips64el: {
777 StringRef CPUName;
778 StringRef ABIName;
779 mips::getMipsCPUAndABI(Args, Triple: getToolChain().getTriple(), CPUName, ABIName);
780 ABIName = mips::getGnuCompatibleMipsABIName(ABI: ABIName);
781
782 CmdArgs.push_back(Elt: "-march");
783 CmdArgs.push_back(Elt: CPUName.data());
784
785 CmdArgs.push_back(Elt: "-mabi");
786 CmdArgs.push_back(Elt: ABIName.data());
787
788 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
789 // or -mshared (not implemented) is in effect.
790 if (RelocationModel == llvm::Reloc::Static)
791 CmdArgs.push_back(Elt: "-mno-shared");
792
793 // LLVM doesn't support -mplt yet and acts as if it is always given.
794 // However, -mplt has no effect with the N64 ABI.
795 if (ABIName != "64" && !Args.hasArg(Ids: options::OPT_mno_abicalls))
796 CmdArgs.push_back(Elt: "-call_nonpic");
797
798 if (getToolChain().getTriple().isLittleEndian())
799 CmdArgs.push_back(Elt: "-EL");
800 else
801 CmdArgs.push_back(Elt: "-EB");
802
803 if (Arg *A = Args.getLastArg(Ids: options::OPT_mnan_EQ)) {
804 if (StringRef(A->getValue()) == "2008")
805 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mnan=2008"));
806 }
807
808 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
809 if (Arg *A = Args.getLastArg(Ids: options::OPT_mfp32, Ids: options::OPT_mfpxx,
810 Ids: options::OPT_mfp64)) {
811 A->claim();
812 A->render(Args, Output&: CmdArgs);
813 } else if (mips::shouldUseFPXX(
814 Args, Triple: getToolChain().getTriple(), CPUName, ABIName,
815 FloatABI: mips::getMipsFloatABI(D: getToolChain().getDriver(), Args,
816 Triple: getToolChain().getTriple())))
817 CmdArgs.push_back(Elt: "-mfpxx");
818
819 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
820 // -mno-mips16 is actually -no-mips16.
821 if (Arg *A =
822 Args.getLastArg(Ids: options::OPT_mips16, Ids: options::OPT_mno_mips16)) {
823 if (A->getOption().matches(ID: options::OPT_mips16)) {
824 A->claim();
825 A->render(Args, Output&: CmdArgs);
826 } else {
827 A->claim();
828 CmdArgs.push_back(Elt: "-no-mips16");
829 }
830 }
831
832 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mmicromips,
833 Ids: options::OPT_mno_micromips);
834 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mdsp, Ids: options::OPT_mno_dsp);
835 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mdspr2, Ids: options::OPT_mno_dspr2);
836
837 if (Arg *A = Args.getLastArg(Ids: options::OPT_mmsa, Ids: options::OPT_mno_msa)) {
838 // Do not use AddLastArg because not all versions of MIPS assembler
839 // support -mmsa / -mno-msa options.
840 if (A->getOption().matches(ID: options::OPT_mmsa))
841 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mmsa"));
842 }
843
844 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mhard_float,
845 Ids: options::OPT_msoft_float);
846
847 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mdouble_float,
848 Ids: options::OPT_msingle_float);
849
850 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_modd_spreg,
851 Ids: options::OPT_mno_odd_spreg);
852
853 AddAssemblerKPIC(ToolChain: getToolChain(), Args, CmdArgs);
854 break;
855 }
856 case llvm::Triple::systemz: {
857 // Always pass an -march option, since our default of z10 is later
858 // than the GNU assembler's default.
859 std::string CPUName =
860 systemz::getSystemZTargetCPU(Args, T: getToolChain().getTriple());
861 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-march=" + CPUName));
862 break;
863 }
864 case llvm::Triple::ve:
865 DefaultAssembler = "nas";
866 }
867
868 for (const Arg *A : Args.filtered(Ids: options::OPT_ffile_prefix_map_EQ,
869 Ids: options::OPT_fdebug_prefix_map_EQ)) {
870 StringRef Map = A->getValue();
871 if (!Map.contains(C: '='))
872 D.Diag(DiagID: diag::err_drv_invalid_argument_to_option)
873 << Map << A->getOption().getName();
874 else {
875 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "--debug-prefix-map"));
876 CmdArgs.push_back(Elt: Args.MakeArgString(Str: Map));
877 }
878 A->claim();
879 }
880
881 Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_I);
882 Args.AddAllArgValues(Output&: CmdArgs, Id0: options::OPT_Wa_COMMA, Id1: options::OPT_Xassembler);
883
884 CmdArgs.push_back(Elt: "-o");
885 CmdArgs.push_back(Elt: Output.getFilename());
886
887 for (const auto &II : Inputs)
888 CmdArgs.push_back(Elt: II.getFilename());
889
890 if (Arg *A = Args.getLastArg(Ids: options::OPT_g_Flag, Ids: options::OPT_gN_Group,
891 Ids: options::OPT_gdwarf_2, Ids: options::OPT_gdwarf_3,
892 Ids: options::OPT_gdwarf_4, Ids: options::OPT_gdwarf_5,
893 Ids: options::OPT_gdwarf))
894 if (!A->getOption().matches(ID: options::OPT_g0)) {
895 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_g_Flag);
896
897 unsigned DwarfVersion = getDwarfVersion(TC: getToolChain(), Args);
898 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-gdwarf-" + Twine(DwarfVersion)));
899 }
900
901 const char *Exec =
902 Args.MakeArgString(Str: getToolChain().GetProgramPath(Name: DefaultAssembler));
903 C.addCommand(C: std::make_unique<Command>(args: JA, args: *this,
904 args: ResponseFileSupport::AtFileCurCP(),
905 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
906
907 // Handle the debug info splitting at object creation time if we're
908 // creating an object.
909 // TODO: Currently only works on linux with newer objcopy.
910 if (Args.hasArg(Ids: options::OPT_gsplit_dwarf) &&
911 getToolChain().getTriple().isOSLinux())
912 SplitDebugInfo(TC: getToolChain(), C, T: *this, JA, Args, Output,
913 OutFile: SplitDebugName(JA, Args, Input: Inputs[0], Output));
914}
915
916namespace {
917// Filter to remove Multilibs that don't exist as a suffix to Path
918class FilterNonExistent {
919 StringRef Base, File;
920 llvm::vfs::FileSystem &VFS;
921
922public:
923 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS)
924 : Base(Base), File(File), VFS(VFS) {}
925 bool operator()(const Multilib &M) {
926 return !VFS.exists(Path: Base + M.gccSuffix() + File);
927 }
928};
929} // end anonymous namespace
930
931static bool isSoftFloatABI(const ArgList &Args) {
932 Arg *A = Args.getLastArg(Ids: options::OPT_msoft_float, Ids: options::OPT_mhard_float,
933 Ids: options::OPT_mfloat_abi_EQ);
934 if (!A)
935 return false;
936
937 return A->getOption().matches(ID: options::OPT_msoft_float) ||
938 (A->getOption().matches(ID: options::OPT_mfloat_abi_EQ) &&
939 A->getValue() == StringRef("soft"));
940}
941
942static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
943 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
944}
945
946static bool isMipsEL(llvm::Triple::ArchType Arch) {
947 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
948}
949
950static bool isMips16(const ArgList &Args) {
951 Arg *A = Args.getLastArg(Ids: options::OPT_mips16, Ids: options::OPT_mno_mips16);
952 return A && A->getOption().matches(ID: options::OPT_mips16);
953}
954
955static bool isMicroMips(const ArgList &Args) {
956 Arg *A = Args.getLastArg(Ids: options::OPT_mmicromips, Ids: options::OPT_mno_micromips);
957 return A && A->getOption().matches(ID: options::OPT_mmicromips);
958}
959
960static bool isMSP430(llvm::Triple::ArchType Arch) {
961 return Arch == llvm::Triple::msp430;
962}
963
964static bool findMipsCsMultilibs(const Driver &D,
965 const Multilib::flags_list &Flags,
966 FilterNonExistent &NonExistent,
967 DetectedMultilibs &Result) {
968 // Check for Code Sourcery toolchain multilibs
969 MultilibSet CSMipsMultilibs;
970 {
971 auto MArchMips16 = MultilibBuilder("/mips16").flag(Flag: "-m32").flag(Flag: "-mips16");
972
973 auto MArchMicroMips =
974 MultilibBuilder("/micromips").flag(Flag: "-m32").flag(Flag: "-mmicromips");
975
976 auto MArchDefault = MultilibBuilder("")
977 .flag(Flag: "-mips16", /*Disallow=*/true)
978 .flag(Flag: "-mmicromips", /*Disallow=*/true);
979
980 auto UCLibc = MultilibBuilder("/uclibc").flag(Flag: "-muclibc");
981
982 auto SoftFloat = MultilibBuilder("/soft-float").flag(Flag: "-msoft-float");
983
984 auto Nan2008 = MultilibBuilder("/nan2008").flag(Flag: "-mnan=2008");
985
986 auto DefaultFloat = MultilibBuilder("")
987 .flag(Flag: "-msoft-float", /*Disallow=*/true)
988 .flag(Flag: "-mnan=2008", /*Disallow=*/true);
989
990 auto BigEndian =
991 MultilibBuilder("").flag(Flag: "-EB").flag(Flag: "-EL", /*Disallow=*/true);
992
993 auto LittleEndian =
994 MultilibBuilder("/el").flag(Flag: "-EL").flag(Flag: "-EB", /*Disallow=*/true);
995
996 // Note that this one's osSuffix is ""
997 auto MAbi64 = MultilibBuilder("")
998 .gccSuffix(S: "/64")
999 .includeSuffix(S: "/64")
1000 .flag(Flag: "-mabi=n64")
1001 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1002 .flag(Flag: "-m32", /*Disallow=*/true);
1003
1004 CSMipsMultilibs =
1005 MultilibSetBuilder()
1006 .Either(M1: MArchMips16, M2: MArchMicroMips, M3: MArchDefault)
1007 .Maybe(M: UCLibc)
1008 .Either(M1: SoftFloat, M2: Nan2008, M3: DefaultFloat)
1009 .FilterOut(Regex: "/micromips/nan2008")
1010 .FilterOut(Regex: "/mips16/nan2008")
1011 .Either(M1: BigEndian, M2: LittleEndian)
1012 .Maybe(M: MAbi64)
1013 .FilterOut(Regex: "/mips16.*/64")
1014 .FilterOut(Regex: "/micromips.*/64")
1015 .makeMultilibSet()
1016 .FilterOut(F: NonExistent)
1017 .setIncludeDirsCallback([](const Multilib &M) {
1018 std::vector<std::string> Dirs({"/include"});
1019 if (StringRef(M.includeSuffix()).starts_with(Prefix: "/uclibc"))
1020 Dirs.push_back(
1021 x: "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
1022 else
1023 Dirs.push_back(x: "/../../../../mips-linux-gnu/libc/usr/include");
1024 return Dirs;
1025 });
1026 }
1027
1028 MultilibSet DebianMipsMultilibs;
1029 {
1030 MultilibBuilder MAbiN32 =
1031 MultilibBuilder().gccSuffix(S: "/n32").includeSuffix(S: "/n32").flag(
1032 Flag: "-mabi=n32");
1033
1034 MultilibBuilder M64 = MultilibBuilder()
1035 .gccSuffix(S: "/64")
1036 .includeSuffix(S: "/64")
1037 .flag(Flag: "-m64")
1038 .flag(Flag: "-m32", /*Disallow=*/true)
1039 .flag(Flag: "-mabi=n32", /*Disallow=*/true);
1040
1041 MultilibBuilder M32 = MultilibBuilder()
1042 .gccSuffix(S: "/32")
1043 .flag(Flag: "-m64", /*Disallow=*/true)
1044 .flag(Flag: "-m32")
1045 .flag(Flag: "-mabi=n32", /*Disallow=*/true);
1046
1047 DebianMipsMultilibs = MultilibSetBuilder()
1048 .Either(M1: M32, M2: M64, M3: MAbiN32)
1049 .makeMultilibSet()
1050 .FilterOut(F: NonExistent);
1051 }
1052
1053 // Sort candidates. Toolchain that best meets the directories tree goes first.
1054 // Then select the first toolchains matches command line flags.
1055 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
1056 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
1057 std::iter_swap(a: Candidates, b: Candidates + 1);
1058 for (const MultilibSet *Candidate : Candidates) {
1059 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1060 if (Candidate == &DebianMipsMultilibs)
1061 Result.BiarchSibling = Multilib();
1062 Result.Multilibs = *Candidate;
1063 return true;
1064 }
1065 }
1066 return false;
1067}
1068
1069static bool findMipsMuslMultilibs(const Driver &D,
1070 const Multilib::flags_list &Flags,
1071 FilterNonExistent &NonExistent,
1072 DetectedMultilibs &Result) {
1073 // Musl toolchain multilibs
1074 MultilibSet MuslMipsMultilibs;
1075 {
1076 auto MArchMipsR2 = MultilibBuilder("")
1077 .osSuffix(S: "/mips-r2-hard-musl")
1078 .flag(Flag: "-EB")
1079 .flag(Flag: "-EL", /*Disallow=*/true)
1080 .flag(Flag: "-march=mips32r2");
1081
1082 auto MArchMipselR2 = MultilibBuilder("/mipsel-r2-hard-musl")
1083 .flag(Flag: "-EB", /*Disallow=*/true)
1084 .flag(Flag: "-EL")
1085 .flag(Flag: "-march=mips32r2");
1086
1087 MuslMipsMultilibs = MultilibSetBuilder()
1088 .Either(M1: MArchMipsR2, M2: MArchMipselR2)
1089 .makeMultilibSet();
1090
1091 // Specify the callback that computes the include directories.
1092 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1093 return std::vector<std::string>(
1094 {"/../sysroot" + M.osSuffix() + "/usr/include"});
1095 });
1096 }
1097 if (MuslMipsMultilibs.select(D, Flags, Result.SelectedMultilibs)) {
1098 Result.Multilibs = MuslMipsMultilibs;
1099 return true;
1100 }
1101 return false;
1102}
1103
1104static bool findMipsMtiMultilibs(const Driver &D,
1105 const Multilib::flags_list &Flags,
1106 FilterNonExistent &NonExistent,
1107 DetectedMultilibs &Result) {
1108 // CodeScape MTI toolchain v1.2 and early.
1109 MultilibSet MtiMipsMultilibsV1;
1110 {
1111 auto MArchMips32 = MultilibBuilder("/mips32")
1112 .flag(Flag: "-m32")
1113 .flag(Flag: "-m64", /*Disallow=*/true)
1114 .flag(Flag: "-mmicromips", /*Disallow=*/true)
1115 .flag(Flag: "-march=mips32");
1116
1117 auto MArchMicroMips = MultilibBuilder("/micromips")
1118 .flag(Flag: "-m32")
1119 .flag(Flag: "-m64", /*Disallow=*/true)
1120 .flag(Flag: "-mmicromips");
1121
1122 auto MArchMips64r2 = MultilibBuilder("/mips64r2")
1123 .flag(Flag: "-m32", /*Disallow=*/true)
1124 .flag(Flag: "-m64")
1125 .flag(Flag: "-march=mips64r2");
1126
1127 auto MArchMips64 = MultilibBuilder("/mips64")
1128 .flag(Flag: "-m32", /*Disallow=*/true)
1129 .flag(Flag: "-m64")
1130 .flag(Flag: "-march=mips64r2", /*Disallow=*/true);
1131
1132 auto MArchDefault = MultilibBuilder("")
1133 .flag(Flag: "-m32")
1134 .flag(Flag: "-m64", /*Disallow=*/true)
1135 .flag(Flag: "-mmicromips", /*Disallow=*/true)
1136 .flag(Flag: "-march=mips32r2");
1137
1138 auto Mips16 = MultilibBuilder("/mips16").flag(Flag: "-mips16");
1139
1140 auto UCLibc = MultilibBuilder("/uclibc").flag(Flag: "-muclibc");
1141
1142 auto MAbi64 = MultilibBuilder("/64")
1143 .flag(Flag: "-mabi=n64")
1144 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1145 .flag(Flag: "-m32", /*Disallow=*/true);
1146
1147 auto BigEndian =
1148 MultilibBuilder("").flag(Flag: "-EB").flag(Flag: "-EL", /*Disallow=*/true);
1149
1150 auto LittleEndian =
1151 MultilibBuilder("/el").flag(Flag: "-EL").flag(Flag: "-EB", /*Disallow=*/true);
1152
1153 auto SoftFloat = MultilibBuilder("/sof").flag(Flag: "-msoft-float");
1154
1155 auto Nan2008 = MultilibBuilder("/nan2008").flag(Flag: "-mnan=2008");
1156
1157 MtiMipsMultilibsV1 =
1158 MultilibSetBuilder()
1159 .Either(M1: MArchMips32, M2: MArchMicroMips, M3: MArchMips64r2, M4: MArchMips64,
1160 M5: MArchDefault)
1161 .Maybe(M: UCLibc)
1162 .Maybe(M: Mips16)
1163 .FilterOut(Regex: "/mips64/mips16")
1164 .FilterOut(Regex: "/mips64r2/mips16")
1165 .FilterOut(Regex: "/micromips/mips16")
1166 .Maybe(M: MAbi64)
1167 .FilterOut(Regex: "/micromips/64")
1168 .FilterOut(Regex: "/mips32/64")
1169 .FilterOut(Regex: "^/64")
1170 .FilterOut(Regex: "/mips16/64")
1171 .Either(M1: BigEndian, M2: LittleEndian)
1172 .Maybe(M: SoftFloat)
1173 .Maybe(M: Nan2008)
1174 .FilterOut(Regex: ".*sof/nan2008")
1175 .makeMultilibSet()
1176 .FilterOut(F: NonExistent)
1177 .setIncludeDirsCallback([](const Multilib &M) {
1178 std::vector<std::string> Dirs({"/include"});
1179 if (StringRef(M.includeSuffix()).starts_with(Prefix: "/uclibc"))
1180 Dirs.push_back(x: "/../../../../sysroot/uclibc/usr/include");
1181 else
1182 Dirs.push_back(x: "/../../../../sysroot/usr/include");
1183 return Dirs;
1184 });
1185 }
1186
1187 // CodeScape IMG toolchain starting from v1.3.
1188 MultilibSet MtiMipsMultilibsV2;
1189 {
1190 auto BeHard = MultilibBuilder("/mips-r2-hard")
1191 .flag(Flag: "-EB")
1192 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1193 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1194 .flag(Flag: "-muclibc", /*Disallow=*/true);
1195 auto BeSoft = MultilibBuilder("/mips-r2-soft")
1196 .flag(Flag: "-EB")
1197 .flag(Flag: "-msoft-float")
1198 .flag(Flag: "-mnan=2008", /*Disallow=*/true);
1199 auto ElHard = MultilibBuilder("/mipsel-r2-hard")
1200 .flag(Flag: "-EL")
1201 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1202 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1203 .flag(Flag: "-muclibc", /*Disallow=*/true);
1204 auto ElSoft = MultilibBuilder("/mipsel-r2-soft")
1205 .flag(Flag: "-EL")
1206 .flag(Flag: "-msoft-float")
1207 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1208 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1209 auto BeHardNan = MultilibBuilder("/mips-r2-hard-nan2008")
1210 .flag(Flag: "-EB")
1211 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1212 .flag(Flag: "-mnan=2008")
1213 .flag(Flag: "-muclibc", /*Disallow=*/true);
1214 auto ElHardNan = MultilibBuilder("/mipsel-r2-hard-nan2008")
1215 .flag(Flag: "-EL")
1216 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1217 .flag(Flag: "-mnan=2008")
1218 .flag(Flag: "-muclibc", /*Disallow=*/true)
1219 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1220 auto BeHardNanUclibc = MultilibBuilder("/mips-r2-hard-nan2008-uclibc")
1221 .flag(Flag: "-EB")
1222 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1223 .flag(Flag: "-mnan=2008")
1224 .flag(Flag: "-muclibc");
1225 auto ElHardNanUclibc = MultilibBuilder("/mipsel-r2-hard-nan2008-uclibc")
1226 .flag(Flag: "-EL")
1227 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1228 .flag(Flag: "-mnan=2008")
1229 .flag(Flag: "-muclibc");
1230 auto BeHardUclibc = MultilibBuilder("/mips-r2-hard-uclibc")
1231 .flag(Flag: "-EB")
1232 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1233 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1234 .flag(Flag: "-muclibc");
1235 auto ElHardUclibc = MultilibBuilder("/mipsel-r2-hard-uclibc")
1236 .flag(Flag: "-EL")
1237 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1238 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1239 .flag(Flag: "-muclibc");
1240 auto ElMicroHardNan = MultilibBuilder("/micromipsel-r2-hard-nan2008")
1241 .flag(Flag: "-EL")
1242 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1243 .flag(Flag: "-mnan=2008")
1244 .flag(Flag: "-mmicromips");
1245 auto ElMicroSoft = MultilibBuilder("/micromipsel-r2-soft")
1246 .flag(Flag: "-EL")
1247 .flag(Flag: "-msoft-float")
1248 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1249 .flag(Flag: "-mmicromips");
1250
1251 auto O32 = MultilibBuilder("/lib")
1252 .osSuffix(S: "")
1253 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1254 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1255 auto N32 = MultilibBuilder("/lib32")
1256 .osSuffix(S: "")
1257 .flag(Flag: "-mabi=n32")
1258 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1259 auto N64 = MultilibBuilder("/lib64")
1260 .osSuffix(S: "")
1261 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1262 .flag(Flag: "-mabi=n64");
1263
1264 MtiMipsMultilibsV2 =
1265 MultilibSetBuilder()
1266 .Either(Ms: {BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1267 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1268 ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1269 .Either(M1: O32, M2: N32, M3: N64)
1270 .makeMultilibSet()
1271 .FilterOut(F: NonExistent)
1272 .setIncludeDirsCallback([](const Multilib &M) {
1273 return std::vector<std::string>({"/../../../../sysroot" +
1274 M.includeSuffix() +
1275 "/../usr/include"});
1276 })
1277 .setFilePathsCallback([](const Multilib &M) {
1278 return std::vector<std::string>(
1279 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1280 });
1281 }
1282 for (auto *Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1283 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1284 Result.Multilibs = *Candidate;
1285 return true;
1286 }
1287 }
1288 return false;
1289}
1290
1291static bool findMipsImgMultilibs(const Driver &D,
1292 const Multilib::flags_list &Flags,
1293 FilterNonExistent &NonExistent,
1294 DetectedMultilibs &Result) {
1295 // CodeScape IMG toolchain v1.2 and early.
1296 MultilibSet ImgMultilibsV1;
1297 {
1298 auto Mips64r6 = MultilibBuilder("/mips64r6")
1299 .flag(Flag: "-m64")
1300 .flag(Flag: "-m32", /*Disallow=*/true);
1301
1302 auto LittleEndian =
1303 MultilibBuilder("/el").flag(Flag: "-EL").flag(Flag: "-EB", /*Disallow=*/true);
1304
1305 auto MAbi64 = MultilibBuilder("/64")
1306 .flag(Flag: "-mabi=n64")
1307 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1308 .flag(Flag: "-m32", /*Disallow=*/true);
1309
1310 ImgMultilibsV1 =
1311 MultilibSetBuilder()
1312 .Maybe(M: Mips64r6)
1313 .Maybe(M: MAbi64)
1314 .Maybe(M: LittleEndian)
1315 .makeMultilibSet()
1316 .FilterOut(F: NonExistent)
1317 .setIncludeDirsCallback([](const Multilib &M) {
1318 return std::vector<std::string>(
1319 {"/include", "/../../../../sysroot/usr/include"});
1320 });
1321 }
1322
1323 // CodeScape IMG toolchain starting from v1.3.
1324 MultilibSet ImgMultilibsV2;
1325 {
1326 auto BeHard = MultilibBuilder("/mips-r6-hard")
1327 .flag(Flag: "-EB")
1328 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1329 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1330 auto BeSoft = MultilibBuilder("/mips-r6-soft")
1331 .flag(Flag: "-EB")
1332 .flag(Flag: "-msoft-float")
1333 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1334 auto ElHard = MultilibBuilder("/mipsel-r6-hard")
1335 .flag(Flag: "-EL")
1336 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1337 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1338 auto ElSoft = MultilibBuilder("/mipsel-r6-soft")
1339 .flag(Flag: "-EL")
1340 .flag(Flag: "-msoft-float")
1341 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1342 auto BeMicroHard = MultilibBuilder("/micromips-r6-hard")
1343 .flag(Flag: "-EB")
1344 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1345 .flag(Flag: "-mmicromips");
1346 auto BeMicroSoft = MultilibBuilder("/micromips-r6-soft")
1347 .flag(Flag: "-EB")
1348 .flag(Flag: "-msoft-float")
1349 .flag(Flag: "-mmicromips");
1350 auto ElMicroHard = MultilibBuilder("/micromipsel-r6-hard")
1351 .flag(Flag: "-EL")
1352 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1353 .flag(Flag: "-mmicromips");
1354 auto ElMicroSoft = MultilibBuilder("/micromipsel-r6-soft")
1355 .flag(Flag: "-EL")
1356 .flag(Flag: "-msoft-float")
1357 .flag(Flag: "-mmicromips");
1358
1359 auto O32 = MultilibBuilder("/lib")
1360 .osSuffix(S: "")
1361 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1362 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1363 auto N32 = MultilibBuilder("/lib32")
1364 .osSuffix(S: "")
1365 .flag(Flag: "-mabi=n32")
1366 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1367 auto N64 = MultilibBuilder("/lib64")
1368 .osSuffix(S: "")
1369 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1370 .flag(Flag: "-mabi=n64");
1371
1372 ImgMultilibsV2 =
1373 MultilibSetBuilder()
1374 .Either(Ms: {BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1375 ElMicroHard, ElMicroSoft})
1376 .Either(M1: O32, M2: N32, M3: N64)
1377 .makeMultilibSet()
1378 .FilterOut(F: NonExistent)
1379 .setIncludeDirsCallback([](const Multilib &M) {
1380 return std::vector<std::string>({"/../../../../sysroot" +
1381 M.includeSuffix() +
1382 "/../usr/include"});
1383 })
1384 .setFilePathsCallback([](const Multilib &M) {
1385 return std::vector<std::string>(
1386 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1387 });
1388 }
1389 for (auto *Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1390 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1391 Result.Multilibs = *Candidate;
1392 return true;
1393 }
1394 }
1395 return false;
1396}
1397
1398bool clang::driver::findMIPSMultilibs(const Driver &D,
1399 const llvm::Triple &TargetTriple,
1400 StringRef Path, const ArgList &Args,
1401 DetectedMultilibs &Result) {
1402 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1403
1404 StringRef CPUName;
1405 StringRef ABIName;
1406 tools::mips::getMipsCPUAndABI(Args, Triple: TargetTriple, CPUName, ABIName);
1407
1408 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1409
1410 Multilib::flags_list Flags;
1411 addMultilibFlag(Enabled: TargetTriple.isMIPS32(), Flag: "-m32", Flags);
1412 addMultilibFlag(Enabled: TargetTriple.isMIPS64(), Flag: "-m64", Flags);
1413 addMultilibFlag(Enabled: isMips16(Args), Flag: "-mips16", Flags);
1414 addMultilibFlag(Enabled: CPUName == "mips32", Flag: "-march=mips32", Flags);
1415 addMultilibFlag(Enabled: CPUName == "mips32r2" || CPUName == "mips32r3" ||
1416 CPUName == "mips32r5" || CPUName == "p5600",
1417 Flag: "-march=mips32r2", Flags);
1418 addMultilibFlag(Enabled: CPUName == "mips32r6", Flag: "-march=mips32r6", Flags);
1419 addMultilibFlag(Enabled: CPUName == "mips64", Flag: "-march=mips64", Flags);
1420 addMultilibFlag(Enabled: CPUName == "mips64r2" || CPUName == "mips64r3" ||
1421 CPUName == "mips64r5" || CPUName == "octeon" ||
1422 CPUName == "octeon+",
1423 Flag: "-march=mips64r2", Flags);
1424 addMultilibFlag(Enabled: CPUName == "mips64r6" || CPUName == "i6400" ||
1425 CPUName == "i6500",
1426 Flag: "-march=mips64r6", Flags);
1427 addMultilibFlag(Enabled: isMicroMips(Args), Flag: "-mmicromips", Flags);
1428 addMultilibFlag(Enabled: tools::mips::isUCLibc(Args), Flag: "-muclibc", Flags);
1429 addMultilibFlag(Enabled: tools::mips::isNaN2008(D, Args, Triple: TargetTriple), Flag: "-mnan=2008",
1430 Flags);
1431 addMultilibFlag(Enabled: ABIName == "n32", Flag: "-mabi=n32", Flags);
1432 addMultilibFlag(Enabled: ABIName == "n64", Flag: "-mabi=n64", Flags);
1433 addMultilibFlag(Enabled: isSoftFloatABI(Args), Flag: "-msoft-float", Flags);
1434 addMultilibFlag(Enabled: !isSoftFloatABI(Args), Flag: "-mhard-float", Flags);
1435 addMultilibFlag(Enabled: isMipsEL(Arch: TargetArch), Flag: "-EL", Flags);
1436 addMultilibFlag(Enabled: !isMipsEL(Arch: TargetArch), Flag: "-EB", Flags);
1437
1438 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1439 TargetTriple.getOS() == llvm::Triple::Linux &&
1440 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1441 return findMipsMuslMultilibs(D, Flags, NonExistent, Result);
1442
1443 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1444 TargetTriple.getOS() == llvm::Triple::Linux &&
1445 TargetTriple.isGNUEnvironment())
1446 return findMipsMtiMultilibs(D, Flags, NonExistent, Result);
1447
1448 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1449 TargetTriple.getOS() == llvm::Triple::Linux &&
1450 TargetTriple.isGNUEnvironment())
1451 return findMipsImgMultilibs(D, Flags, NonExistent, Result);
1452
1453 if (findMipsCsMultilibs(D, Flags, NonExistent, Result))
1454 return true;
1455
1456 // Fallback to the regular toolchain-tree structure.
1457 Multilib Default;
1458 Result.Multilibs.push_back(M: Default);
1459 Result.Multilibs.FilterOut(F: NonExistent);
1460
1461 if (Result.Multilibs.select(D, Flags, Result.SelectedMultilibs)) {
1462 Result.BiarchSibling = Multilib();
1463 return true;
1464 }
1465
1466 return false;
1467}
1468
1469static void findAndroidArmMultilibs(const Driver &D,
1470 const llvm::Triple &TargetTriple,
1471 StringRef Path, const ArgList &Args,
1472 DetectedMultilibs &Result) {
1473 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1474 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1475 MultilibBuilder ArmV7Multilib = MultilibBuilder("/armv7-a")
1476 .flag(Flag: "-march=armv7-a")
1477 .flag(Flag: "-mthumb", /*Disallow=*/true);
1478 MultilibBuilder ThumbMultilib = MultilibBuilder("/thumb")
1479 .flag(Flag: "-march=armv7-a", /*Disallow=*/true)
1480 .flag(Flag: "-mthumb");
1481 MultilibBuilder ArmV7ThumbMultilib =
1482 MultilibBuilder("/armv7-a/thumb").flag(Flag: "-march=armv7-a").flag(Flag: "-mthumb");
1483 MultilibBuilder DefaultMultilib =
1484 MultilibBuilder("")
1485 .flag(Flag: "-march=armv7-a", /*Disallow=*/true)
1486 .flag(Flag: "-mthumb", /*Disallow=*/true);
1487 MultilibSet AndroidArmMultilibs =
1488 MultilibSetBuilder()
1489 .Either(M1: ThumbMultilib, M2: ArmV7Multilib, M3: ArmV7ThumbMultilib,
1490 M4: DefaultMultilib)
1491 .makeMultilibSet()
1492 .FilterOut(F: NonExistent);
1493
1494 Multilib::flags_list Flags;
1495 llvm::StringRef Arch = Args.getLastArgValue(Id: options::OPT_march_EQ);
1496 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1497 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1498 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1499 bool IsThumbMode = IsThumbArch ||
1500 Args.hasFlag(Pos: options::OPT_mthumb, Neg: options::OPT_mno_thumb, Default: false) ||
1501 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB);
1502 bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1503 (llvm::ARM::parseArchVersion(Arch) == 7 ||
1504 (IsArmArch && Arch == "" && IsV7SubArch));
1505 addMultilibFlag(Enabled: IsArmV7Mode, Flag: "-march=armv7-a", Flags);
1506 addMultilibFlag(Enabled: IsThumbMode, Flag: "-mthumb", Flags);
1507
1508 if (AndroidArmMultilibs.select(D, Flags, Result.SelectedMultilibs))
1509 Result.Multilibs = AndroidArmMultilibs;
1510}
1511
1512static bool findMSP430Multilibs(const Driver &D,
1513 const llvm::Triple &TargetTriple,
1514 StringRef Path, const ArgList &Args,
1515 DetectedMultilibs &Result) {
1516 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1517 MultilibBuilder WithoutExceptions =
1518 MultilibBuilder("/430").flag(Flag: "-exceptions", /*Disallow=*/true);
1519 MultilibBuilder WithExceptions =
1520 MultilibBuilder("/430/exceptions").flag(Flag: "-exceptions");
1521
1522 // FIXME: when clang starts to support msp430x ISA additional logic
1523 // to select between multilib must be implemented
1524 // MultilibBuilder MSP430xMultilib = MultilibBuilder("/large");
1525
1526 Result.Multilibs.push_back(M: WithoutExceptions.makeMultilib());
1527 Result.Multilibs.push_back(M: WithExceptions.makeMultilib());
1528 Result.Multilibs.FilterOut(F: NonExistent);
1529
1530 Multilib::flags_list Flags;
1531 addMultilibFlag(Enabled: Args.hasFlag(Pos: options::OPT_fexceptions,
1532 Neg: options::OPT_fno_exceptions, Default: false),
1533 Flag: "-exceptions", Flags);
1534 if (Result.Multilibs.select(D, Flags, Result.SelectedMultilibs))
1535 return true;
1536
1537 return false;
1538}
1539
1540static void findCSKYMultilibs(const Driver &D, const llvm::Triple &TargetTriple,
1541 StringRef Path, const ArgList &Args,
1542 DetectedMultilibs &Result) {
1543 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1544
1545 tools::csky::FloatABI TheFloatABI = tools::csky::getCSKYFloatABI(D, Args);
1546 std::optional<llvm::StringRef> Res =
1547 tools::csky::getCSKYArchName(D, Args, Triple: TargetTriple);
1548
1549 if (!Res)
1550 return;
1551 auto ARCHName = *Res;
1552
1553 Multilib::flags_list Flags;
1554 addMultilibFlag(Enabled: TheFloatABI == tools::csky::FloatABI::Hard, Flag: "-hard-fp",
1555 Flags);
1556 addMultilibFlag(Enabled: TheFloatABI == tools::csky::FloatABI::SoftFP, Flag: "-soft-fp",
1557 Flags);
1558 addMultilibFlag(Enabled: TheFloatABI == tools::csky::FloatABI::Soft, Flag: "-soft", Flags);
1559 addMultilibFlag(Enabled: ARCHName == "ck801", Flag: "-march=ck801", Flags);
1560 addMultilibFlag(Enabled: ARCHName == "ck802", Flag: "-march=ck802", Flags);
1561 addMultilibFlag(Enabled: ARCHName == "ck803", Flag: "-march=ck803", Flags);
1562 addMultilibFlag(Enabled: ARCHName == "ck804", Flag: "-march=ck804", Flags);
1563 addMultilibFlag(Enabled: ARCHName == "ck805", Flag: "-march=ck805", Flags);
1564 addMultilibFlag(Enabled: ARCHName == "ck807", Flag: "-march=ck807", Flags);
1565 addMultilibFlag(Enabled: ARCHName == "ck810", Flag: "-march=ck810", Flags);
1566 addMultilibFlag(Enabled: ARCHName == "ck810v", Flag: "-march=ck810v", Flags);
1567 addMultilibFlag(Enabled: ARCHName == "ck860", Flag: "-march=ck860", Flags);
1568 addMultilibFlag(Enabled: ARCHName == "ck860v", Flag: "-march=ck860v", Flags);
1569
1570 bool isBigEndian = false;
1571 if (Arg *A = Args.getLastArg(Ids: options::OPT_mlittle_endian,
1572 Ids: options::OPT_mbig_endian))
1573 isBigEndian = !A->getOption().matches(ID: options::OPT_mlittle_endian);
1574 addMultilibFlag(Enabled: isBigEndian, Flag: "-EB", Flags);
1575
1576 auto HardFloat = MultilibBuilder("/hard-fp").flag(Flag: "-hard-fp");
1577 auto SoftFpFloat = MultilibBuilder("/soft-fp").flag(Flag: "-soft-fp");
1578 auto SoftFloat = MultilibBuilder("").flag(Flag: "-soft");
1579 auto Arch801 = MultilibBuilder("/ck801").flag(Flag: "-march=ck801");
1580 auto Arch802 = MultilibBuilder("/ck802").flag(Flag: "-march=ck802");
1581 auto Arch803 = MultilibBuilder("/ck803").flag(Flag: "-march=ck803");
1582 // CK804 use the same library as CK803
1583 auto Arch804 = MultilibBuilder("/ck803").flag(Flag: "-march=ck804");
1584 auto Arch805 = MultilibBuilder("/ck805").flag(Flag: "-march=ck805");
1585 auto Arch807 = MultilibBuilder("/ck807").flag(Flag: "-march=ck807");
1586 auto Arch810 = MultilibBuilder("").flag(Flag: "-march=ck810");
1587 auto Arch810v = MultilibBuilder("/ck810v").flag(Flag: "-march=ck810v");
1588 auto Arch860 = MultilibBuilder("/ck860").flag(Flag: "-march=ck860");
1589 auto Arch860v = MultilibBuilder("/ck860v").flag(Flag: "-march=ck860v");
1590 auto BigEndian = MultilibBuilder("/big").flag(Flag: "-EB");
1591
1592 MultilibSet CSKYMultilibs =
1593 MultilibSetBuilder()
1594 .Maybe(M: BigEndian)
1595 .Either(Ms: {Arch801, Arch802, Arch803, Arch804, Arch805, Arch807,
1596 Arch810, Arch810v, Arch860, Arch860v})
1597 .Either(M1: HardFloat, M2: SoftFpFloat, M3: SoftFloat)
1598 .makeMultilibSet()
1599 .FilterOut(F: NonExistent);
1600
1601 if (CSKYMultilibs.select(D, Flags, Result.SelectedMultilibs))
1602 Result.Multilibs = CSKYMultilibs;
1603}
1604
1605/// Extend the multi-lib re-use selection mechanism for RISC-V.
1606/// This function will try to re-use multi-lib if they are compatible.
1607/// Definition of compatible:
1608/// - ABI must be the same.
1609/// - multi-lib is a subset of current arch, e.g. multi-lib=march=rv32im
1610/// is a subset of march=rv32imc.
1611/// - march that contains atomic extension can't reuse multi-lib that
1612/// doesn't have atomic, vice versa. e.g. multi-lib=march=rv32im and
1613/// march=rv32ima are not compatible, because software and hardware
1614/// atomic operation can't work together correctly.
1615static bool
1616selectRISCVMultilib(const Driver &D, const MultilibSet &RISCVMultilibSet,
1617 StringRef Arch, const Multilib::flags_list &Flags,
1618 llvm::SmallVectorImpl<Multilib> &SelectedMultilibs) {
1619 // Try to find the perfect matching multi-lib first.
1620 if (RISCVMultilibSet.select(D, Flags, SelectedMultilibs))
1621 return true;
1622
1623 Multilib::flags_list NewFlags;
1624 std::vector<MultilibBuilder> NewMultilibs;
1625
1626 llvm::Expected<std::unique_ptr<llvm::RISCVISAInfo>> ParseResult =
1627 llvm::RISCVISAInfo::parseArchString(
1628 Arch, /*EnableExperimentalExtension=*/true,
1629 /*ExperimentalExtensionVersionCheck=*/false);
1630 // Ignore any error here, we assume it will be handled in another place.
1631 if (llvm::errorToBool(Err: ParseResult.takeError()))
1632 return false;
1633
1634 auto &ISAInfo = *ParseResult;
1635
1636 addMultilibFlag(Enabled: ISAInfo->getXLen() == 32, Flag: "-m32", Flags&: NewFlags);
1637 addMultilibFlag(Enabled: ISAInfo->getXLen() == 64, Flag: "-m64", Flags&: NewFlags);
1638
1639 // Collect all flags except march=*
1640 for (StringRef Flag : Flags) {
1641 if (Flag.starts_with(Prefix: "!march=") || Flag.starts_with(Prefix: "-march="))
1642 continue;
1643
1644 NewFlags.push_back(x: Flag.str());
1645 }
1646
1647 llvm::StringSet<> AllArchExts;
1648 // Reconstruct multi-lib list, and break march option into separated
1649 // extension. e.g. march=rv32im -> +i +m
1650 for (const auto &M : RISCVMultilibSet) {
1651 bool Skip = false;
1652
1653 MultilibBuilder NewMultilib =
1654 MultilibBuilder(M.gccSuffix(), M.osSuffix(), M.includeSuffix());
1655 for (StringRef Flag : M.flags()) {
1656 // Add back all flags except -march.
1657 if (!Flag.consume_front(Prefix: "-march=")) {
1658 NewMultilib.flag(Flag);
1659 continue;
1660 }
1661
1662 // Break down -march into individual extension.
1663 llvm::Expected<std::unique_ptr<llvm::RISCVISAInfo>> MLConfigParseResult =
1664 llvm::RISCVISAInfo::parseArchString(
1665 Arch: Flag, /*EnableExperimentalExtension=*/true,
1666 /*ExperimentalExtensionVersionCheck=*/false);
1667 // Ignore any error here, we assume it will handled in another place.
1668 if (llvm::errorToBool(Err: MLConfigParseResult.takeError())) {
1669 // We might get a parsing error if rv32e in the list, we could just skip
1670 // that and process the rest of multi-lib configs.
1671 Skip = true;
1672 continue;
1673 }
1674 auto &MLConfigISAInfo = *MLConfigParseResult;
1675
1676 for (auto &MLConfigArchExt : MLConfigISAInfo->getExtensions()) {
1677 auto ExtName = MLConfigArchExt.first;
1678 NewMultilib.flag(Flag: Twine("-", ExtName).str());
1679
1680 if (AllArchExts.insert(key: ExtName).second) {
1681 addMultilibFlag(Enabled: ISAInfo->hasExtension(Ext: ExtName),
1682 Flag: Twine("-", ExtName).str(), Flags&: NewFlags);
1683 }
1684 }
1685
1686 // Check the XLEN explicitly.
1687 if (MLConfigISAInfo->getXLen() == 32) {
1688 NewMultilib.flag(Flag: "-m32");
1689 NewMultilib.flag(Flag: "-m64", /*Disallow*/ true);
1690 } else {
1691 NewMultilib.flag(Flag: "-m32", /*Disallow*/ true);
1692 NewMultilib.flag(Flag: "-m64");
1693 }
1694
1695 // Atomic extension must be explicitly checked, soft and hard atomic
1696 // operation never co-work correctly.
1697 if (!MLConfigISAInfo->hasExtension(Ext: "a"))
1698 NewMultilib.flag(Flag: "-a", /*Disallow*/ true);
1699 }
1700
1701 if (Skip)
1702 continue;
1703
1704 NewMultilibs.emplace_back(args&: NewMultilib);
1705 }
1706
1707 // Build an internal used only multi-lib list, used for checking any
1708 // compatible multi-lib.
1709 MultilibSet NewRISCVMultilibs =
1710 MultilibSetBuilder().Either(Ms: NewMultilibs).makeMultilibSet();
1711
1712 if (NewRISCVMultilibs.select(D, Flags: NewFlags, SelectedMultilibs))
1713 for (const Multilib &NewSelectedM : SelectedMultilibs)
1714 for (const auto &M : RISCVMultilibSet)
1715 // Look up the corresponding multi-lib entry in original multi-lib set.
1716 if (M.gccSuffix() == NewSelectedM.gccSuffix())
1717 return true;
1718
1719 return false;
1720}
1721
1722static void findRISCVBareMetalMultilibs(const Driver &D,
1723 const llvm::Triple &TargetTriple,
1724 StringRef Path, const ArgList &Args,
1725 DetectedMultilibs &Result) {
1726 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1727 struct RiscvMultilib {
1728 StringRef march;
1729 StringRef mabi;
1730 };
1731 // currently only support the set of multilibs like riscv-gnu-toolchain does.
1732 // TODO: support MULTILIB_REUSE
1733 constexpr RiscvMultilib RISCVMultilibSet[] = {
1734 {.march: "rv32i", .mabi: "ilp32"}, {.march: "rv32im", .mabi: "ilp32"}, {.march: "rv32iac", .mabi: "ilp32"},
1735 {.march: "rv32imac", .mabi: "ilp32"}, {.march: "rv32imafc", .mabi: "ilp32f"}, {.march: "rv64imac", .mabi: "lp64"},
1736 {.march: "rv64imafdc", .mabi: "lp64d"}};
1737
1738 std::vector<MultilibBuilder> Ms;
1739 for (auto Element : RISCVMultilibSet) {
1740 // multilib path rule is ${march}/${mabi}
1741 Ms.emplace_back(
1742 args&: MultilibBuilder(
1743 (Twine(Element.march) + "/" + Twine(Element.mabi)).str())
1744 .flag(Flag: Twine("-march=", Element.march).str())
1745 .flag(Flag: Twine("-mabi=", Element.mabi).str()));
1746 }
1747 MultilibSet RISCVMultilibs =
1748 MultilibSetBuilder()
1749 .Either(Ms)
1750 .makeMultilibSet()
1751 .FilterOut(F: NonExistent)
1752 .setFilePathsCallback([](const Multilib &M) {
1753 return std::vector<std::string>(
1754 {M.gccSuffix(),
1755 "/../../../../riscv64-unknown-elf/lib" + M.gccSuffix(),
1756 "/../../../../riscv32-unknown-elf/lib" + M.gccSuffix()});
1757 });
1758
1759 Multilib::flags_list Flags;
1760 llvm::StringSet<> Added_ABIs;
1761 StringRef ABIName = tools::riscv::getRISCVABI(Args, Triple: TargetTriple);
1762 std::string MArch = tools::riscv::getRISCVArch(Args, Triple: TargetTriple);
1763 for (auto Element : RISCVMultilibSet) {
1764 addMultilibFlag(Enabled: MArch == Element.march,
1765 Flag: Twine("-march=", Element.march).str().c_str(), Flags);
1766 if (!Added_ABIs.count(Key: Element.mabi)) {
1767 Added_ABIs.insert(key: Element.mabi);
1768 addMultilibFlag(Enabled: ABIName == Element.mabi,
1769 Flag: Twine("-mabi=", Element.mabi).str().c_str(), Flags);
1770 }
1771 }
1772
1773 if (selectRISCVMultilib(D, RISCVMultilibSet: RISCVMultilibs, Arch: MArch, Flags,
1774 SelectedMultilibs&: Result.SelectedMultilibs))
1775 Result.Multilibs = RISCVMultilibs;
1776}
1777
1778static void findRISCVMultilibs(const Driver &D,
1779 const llvm::Triple &TargetTriple, StringRef Path,
1780 const ArgList &Args, DetectedMultilibs &Result) {
1781 if (TargetTriple.getOS() == llvm::Triple::UnknownOS)
1782 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result);
1783
1784 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1785 MultilibBuilder Ilp32 =
1786 MultilibBuilder("lib32/ilp32").flag(Flag: "-m32").flag(Flag: "-mabi=ilp32");
1787 MultilibBuilder Ilp32f =
1788 MultilibBuilder("lib32/ilp32f").flag(Flag: "-m32").flag(Flag: "-mabi=ilp32f");
1789 MultilibBuilder Ilp32d =
1790 MultilibBuilder("lib32/ilp32d").flag(Flag: "-m32").flag(Flag: "-mabi=ilp32d");
1791 MultilibBuilder Lp64 =
1792 MultilibBuilder("lib64/lp64").flag(Flag: "-m64").flag(Flag: "-mabi=lp64");
1793 MultilibBuilder Lp64f =
1794 MultilibBuilder("lib64/lp64f").flag(Flag: "-m64").flag(Flag: "-mabi=lp64f");
1795 MultilibBuilder Lp64d =
1796 MultilibBuilder("lib64/lp64d").flag(Flag: "-m64").flag(Flag: "-mabi=lp64d");
1797 MultilibSet RISCVMultilibs =
1798 MultilibSetBuilder()
1799 .Either(Ms: {Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d})
1800 .makeMultilibSet()
1801 .FilterOut(F: NonExistent);
1802
1803 Multilib::flags_list Flags;
1804 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64;
1805 StringRef ABIName = tools::riscv::getRISCVABI(Args, Triple: TargetTriple);
1806
1807 addMultilibFlag(Enabled: !IsRV64, Flag: "-m32", Flags);
1808 addMultilibFlag(Enabled: IsRV64, Flag: "-m64", Flags);
1809 addMultilibFlag(Enabled: ABIName == "ilp32", Flag: "-mabi=ilp32", Flags);
1810 addMultilibFlag(Enabled: ABIName == "ilp32f", Flag: "-mabi=ilp32f", Flags);
1811 addMultilibFlag(Enabled: ABIName == "ilp32d", Flag: "-mabi=ilp32d", Flags);
1812 addMultilibFlag(Enabled: ABIName == "lp64", Flag: "-mabi=lp64", Flags);
1813 addMultilibFlag(Enabled: ABIName == "lp64f", Flag: "-mabi=lp64f", Flags);
1814 addMultilibFlag(Enabled: ABIName == "lp64d", Flag: "-mabi=lp64d", Flags);
1815
1816 if (RISCVMultilibs.select(D, Flags, Result.SelectedMultilibs))
1817 Result.Multilibs = RISCVMultilibs;
1818}
1819
1820static bool findBiarchMultilibs(const Driver &D,
1821 const llvm::Triple &TargetTriple,
1822 StringRef Path, const ArgList &Args,
1823 bool NeedsBiarchSuffix,
1824 DetectedMultilibs &Result) {
1825 MultilibBuilder DefaultBuilder;
1826
1827 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1828 // in what would normally be GCCInstallPath and put the 64-bit
1829 // libs in a subdirectory named 64. The simple logic we follow is that
1830 // *if* there is a subdirectory of the right name with crtbegin.o in it,
1831 // we use that. If not, and if not a biarch triple alias, we look for
1832 // crtbegin.o without the subdirectory.
1833
1834 StringRef Suff64 = "/64";
1835 // Solaris uses platform-specific suffixes instead of /64.
1836 if (TargetTriple.isOSSolaris()) {
1837 switch (TargetTriple.getArch()) {
1838 case llvm::Triple::x86:
1839 case llvm::Triple::x86_64:
1840 Suff64 = "/amd64";
1841 break;
1842 case llvm::Triple::sparc:
1843 case llvm::Triple::sparcv9:
1844 Suff64 = "/sparcv9";
1845 break;
1846 default:
1847 break;
1848 }
1849 }
1850
1851 Multilib Alt64 = MultilibBuilder()
1852 .gccSuffix(S: Suff64)
1853 .includeSuffix(S: Suff64)
1854 .flag(Flag: "-m32", /*Disallow=*/true)
1855 .flag(Flag: "-m64")
1856 .flag(Flag: "-mx32", /*Disallow=*/true)
1857 .makeMultilib();
1858 Multilib Alt32 = MultilibBuilder()
1859 .gccSuffix(S: "/32")
1860 .includeSuffix(S: "/32")
1861 .flag(Flag: "-m32")
1862 .flag(Flag: "-m64", /*Disallow=*/true)
1863 .flag(Flag: "-mx32", /*Disallow=*/true)
1864 .makeMultilib();
1865 Multilib Altx32 = MultilibBuilder()
1866 .gccSuffix(S: "/x32")
1867 .includeSuffix(S: "/x32")
1868 .flag(Flag: "-m32", /*Disallow=*/true)
1869 .flag(Flag: "-m64", /*Disallow=*/true)
1870 .flag(Flag: "-mx32")
1871 .makeMultilib();
1872 Multilib Alt32sparc = MultilibBuilder()
1873 .gccSuffix(S: "/sparcv8plus")
1874 .includeSuffix(S: "/sparcv8plus")
1875 .flag(Flag: "-m32")
1876 .flag(Flag: "-m64", /*Disallow=*/true)
1877 .makeMultilib();
1878
1879 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
1880 FilterNonExistent NonExistent(
1881 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
1882
1883 // Determine default multilib from: 32, 64, x32
1884 // Also handle cases such as 64 on 32, 32 on 64, etc.
1885 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
1886 const bool IsX32 = TargetTriple.isX32();
1887 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
1888 Want = WANT64;
1889 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32sparc))
1890 Want = WANT64;
1891 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
1892 Want = WANT64;
1893 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
1894 Want = WANT32;
1895 else if (TargetTriple.isArch64Bit() && !NonExistent(Alt32sparc))
1896 Want = WANT64;
1897 else {
1898 if (TargetTriple.isArch32Bit())
1899 Want = NeedsBiarchSuffix ? WANT64 : WANT32;
1900 else if (IsX32)
1901 Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
1902 else
1903 Want = NeedsBiarchSuffix ? WANT32 : WANT64;
1904 }
1905
1906 if (Want == WANT32)
1907 DefaultBuilder.flag(Flag: "-m32")
1908 .flag(Flag: "-m64", /*Disallow=*/true)
1909 .flag(Flag: "-mx32", /*Disallow=*/true);
1910 else if (Want == WANT64)
1911 DefaultBuilder.flag(Flag: "-m32", /*Disallow=*/true)
1912 .flag(Flag: "-m64")
1913 .flag(Flag: "-mx32", /*Disallow=*/true);
1914 else if (Want == WANTX32)
1915 DefaultBuilder.flag(Flag: "-m32", /*Disallow=*/true)
1916 .flag(Flag: "-m64", /*Disallow=*/true)
1917 .flag(Flag: "-mx32");
1918 else
1919 return false;
1920
1921 Multilib Default = DefaultBuilder.makeMultilib();
1922
1923 Result.Multilibs.push_back(M: Default);
1924 Result.Multilibs.push_back(M: Alt64);
1925 Result.Multilibs.push_back(M: Alt32);
1926 Result.Multilibs.push_back(M: Altx32);
1927 Result.Multilibs.push_back(M: Alt32sparc);
1928
1929 Result.Multilibs.FilterOut(F: NonExistent);
1930
1931 Multilib::flags_list Flags;
1932 addMultilibFlag(Enabled: TargetTriple.isArch64Bit() && !IsX32, Flag: "-m64", Flags);
1933 addMultilibFlag(Enabled: TargetTriple.isArch32Bit(), Flag: "-m32", Flags);
1934 addMultilibFlag(Enabled: TargetTriple.isArch64Bit() && IsX32, Flag: "-mx32", Flags);
1935
1936 if (!Result.Multilibs.select(D, Flags, Result.SelectedMultilibs))
1937 return false;
1938
1939 if (Result.SelectedMultilibs.back() == Alt64 ||
1940 Result.SelectedMultilibs.back() == Alt32 ||
1941 Result.SelectedMultilibs.back() == Altx32 ||
1942 Result.SelectedMultilibs.back() == Alt32sparc)
1943 Result.BiarchSibling = Default;
1944
1945 return true;
1946}
1947
1948/// Generic_GCC - A tool chain using the 'gcc' command to perform
1949/// all subcommands; this relies on gcc translating the majority of
1950/// command line options.
1951
1952/// Less-than for GCCVersion, implementing a Strict Weak Ordering.
1953bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
1954 int RHSPatch,
1955 StringRef RHSPatchSuffix) const {
1956 if (Major != RHSMajor)
1957 return Major < RHSMajor;
1958 if (Minor != RHSMinor) {
1959 // Note that versions without a specified minor sort higher than those with
1960 // a minor.
1961 if (RHSMinor == -1)
1962 return true;
1963 if (Minor == -1)
1964 return false;
1965 return Minor < RHSMinor;
1966 }
1967 if (Patch != RHSPatch) {
1968 // Note that versions without a specified patch sort higher than those with
1969 // a patch.
1970 if (RHSPatch == -1)
1971 return true;
1972 if (Patch == -1)
1973 return false;
1974
1975 // Otherwise just sort on the patch itself.
1976 return Patch < RHSPatch;
1977 }
1978 if (PatchSuffix != RHSPatchSuffix) {
1979 // Sort empty suffixes higher.
1980 if (RHSPatchSuffix.empty())
1981 return true;
1982 if (PatchSuffix.empty())
1983 return false;
1984
1985 // Provide a lexicographic sort to make this a total ordering.
1986 return PatchSuffix < RHSPatchSuffix;
1987 }
1988
1989 // The versions are equal.
1990 return false;
1991}
1992
1993/// Parse a GCCVersion object out of a string of text.
1994///
1995/// This is the primary means of forming GCCVersion objects.
1996/*static*/
1997Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) {
1998 const GCCVersion BadVersion = {.Text: VersionText.str(), .Major: -1, .Minor: -1, .Patch: -1, .MajorStr: "", .MinorStr: "", .PatchSuffix: ""};
1999 std::pair<StringRef, StringRef> First = VersionText.split(Separator: '.');
2000 std::pair<StringRef, StringRef> Second = First.second.split(Separator: '.');
2001
2002 StringRef MajorStr = First.first;
2003 StringRef MinorStr = Second.first;
2004 StringRef PatchStr = Second.second;
2005
2006 GCCVersion GoodVersion = {.Text: VersionText.str(), .Major: -1, .Minor: -1, .Patch: -1, .MajorStr: "", .MinorStr: "", .PatchSuffix: ""};
2007
2008 // Parse version number strings such as:
2009 // 5
2010 // 4.4
2011 // 4.4-patched
2012 // 4.4.0
2013 // 4.4.x
2014 // 4.4.2-rc4
2015 // 4.4.x-patched
2016 // 10-win32
2017 // Split on '.', handle 1, 2 or 3 such segments. Each segment must contain
2018 // purely a number, except for the last one, where a non-number suffix
2019 // is stored in PatchSuffix. The third segment is allowed to not contain
2020 // a number at all.
2021
2022 auto TryParseLastNumber = [&](StringRef Segment, int &Number,
2023 std::string &OutStr) -> bool {
2024 // Look for a number prefix and parse that, and split out any trailing
2025 // string into GoodVersion.PatchSuffix.
2026
2027 if (size_t EndNumber = Segment.find_first_not_of(Chars: "0123456789")) {
2028 StringRef NumberStr = Segment.slice(Start: 0, End: EndNumber);
2029 if (NumberStr.getAsInteger(Radix: 10, Result&: Number) || Number < 0)
2030 return false;
2031 OutStr = NumberStr;
2032 GoodVersion.PatchSuffix = Segment.substr(Start: EndNumber);
2033 return true;
2034 }
2035 return false;
2036 };
2037 auto TryParseNumber = [](StringRef Segment, int &Number) -> bool {
2038 if (Segment.getAsInteger(Radix: 10, Result&: Number) || Number < 0)
2039 return false;
2040 return true;
2041 };
2042
2043 if (MinorStr.empty()) {
2044 // If no minor string, major is the last segment
2045 if (!TryParseLastNumber(MajorStr, GoodVersion.Major, GoodVersion.MajorStr))
2046 return BadVersion;
2047 return GoodVersion;
2048 }
2049
2050 if (!TryParseNumber(MajorStr, GoodVersion.Major))
2051 return BadVersion;
2052 GoodVersion.MajorStr = MajorStr;
2053
2054 if (PatchStr.empty()) {
2055 // If no patch string, minor is the last segment
2056 if (!TryParseLastNumber(MinorStr, GoodVersion.Minor, GoodVersion.MinorStr))
2057 return BadVersion;
2058 return GoodVersion;
2059 }
2060
2061 if (!TryParseNumber(MinorStr, GoodVersion.Minor))
2062 return BadVersion;
2063 GoodVersion.MinorStr = MinorStr;
2064
2065 // For the last segment, tolerate a missing number.
2066 std::string DummyStr;
2067 TryParseLastNumber(PatchStr, GoodVersion.Patch, DummyStr);
2068 return GoodVersion;
2069}
2070
2071static llvm::StringRef getGCCToolchainDir(const ArgList &Args,
2072 llvm::StringRef SysRoot) {
2073 const Arg *A = Args.getLastArg(Ids: clang::driver::options::OPT_gcc_toolchain);
2074 if (A)
2075 return A->getValue();
2076
2077 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX.
2078 // GCC_INSTALL_PREFIX specifies the gcc installation for the default
2079 // sysroot and is likely not valid with a different sysroot.
2080 if (!SysRoot.empty())
2081 return "";
2082
2083 return GCC_INSTALL_PREFIX;
2084}
2085
2086/// Initialize a GCCInstallationDetector from the driver.
2087///
2088/// This performs all of the autodetection and sets up the various paths.
2089/// Once constructed, a GCCInstallationDetector is essentially immutable.
2090///
2091/// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
2092/// should instead pull the target out of the driver. This is currently
2093/// necessary because the driver doesn't store the final version of the target
2094/// triple.
2095void Generic_GCC::GCCInstallationDetector::init(
2096 const llvm::Triple &TargetTriple, const ArgList &Args) {
2097 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
2098 ? TargetTriple.get64BitArchVariant()
2099 : TargetTriple.get32BitArchVariant();
2100 // The library directories which may contain GCC installations.
2101 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
2102 // The compatible GCC triples for this particular architecture.
2103 SmallVector<StringRef, 16> CandidateTripleAliases;
2104 SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
2105 // Add some triples that we want to check first.
2106 CandidateTripleAliases.push_back(Elt: TargetTriple.str());
2107 std::string TripleNoVendor, BiarchTripleNoVendor;
2108 if (TargetTriple.getVendor() == llvm::Triple::UnknownVendor) {
2109 StringRef OSEnv = TargetTriple.getOSAndEnvironmentName();
2110 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32)
2111 OSEnv = "linux-gnu";
2112 TripleNoVendor = (TargetTriple.getArchName().str() + '-' + OSEnv).str();
2113 CandidateTripleAliases.push_back(Elt: TripleNoVendor);
2114 if (BiarchVariantTriple.getArch() != llvm::Triple::UnknownArch) {
2115 BiarchTripleNoVendor =
2116 (BiarchVariantTriple.getArchName().str() + '-' + OSEnv).str();
2117 CandidateBiarchTripleAliases.push_back(Elt: BiarchTripleNoVendor);
2118 }
2119 }
2120
2121 CollectLibDirsAndTriples(TargetTriple, BiarchTriple: BiarchVariantTriple, LibDirs&: CandidateLibDirs,
2122 TripleAliases&: CandidateTripleAliases, BiarchLibDirs&: CandidateBiarchLibDirs,
2123 BiarchTripleAliases&: CandidateBiarchTripleAliases);
2124
2125 // If --gcc-install-dir= is specified, skip filesystem detection.
2126 if (const Arg *A =
2127 Args.getLastArg(Ids: clang::driver::options::OPT_gcc_install_dir_EQ);
2128 A && A->getValue()[0]) {
2129 StringRef InstallDir = A->getValue();
2130 if (!ScanGCCForMultilibs(TargetTriple, Args, Path: InstallDir, NeedsBiarchSuffix: false)) {
2131 D.Diag(DiagID: diag::err_drv_invalid_gcc_install_dir) << InstallDir;
2132 } else {
2133 (void)InstallDir.consume_back(Suffix: "/");
2134 StringRef VersionText = llvm::sys::path::filename(path: InstallDir);
2135 StringRef TripleText =
2136 llvm::sys::path::filename(path: llvm::sys::path::parent_path(path: InstallDir));
2137
2138 Version = GCCVersion::Parse(VersionText);
2139 GCCTriple.setTriple(TripleText);
2140 GCCInstallPath = std::string(InstallDir);
2141 GCCParentLibPath = GCCInstallPath + "/../../..";
2142 IsValid = true;
2143 }
2144 return;
2145 }
2146
2147 // If --gcc-triple is specified use this instead of trying to
2148 // auto-detect a triple.
2149 if (const Arg *A =
2150 Args.getLastArg(Ids: clang::driver::options::OPT_gcc_triple_EQ)) {
2151 StringRef GCCTriple = A->getValue();
2152 CandidateTripleAliases.clear();
2153 CandidateTripleAliases.push_back(Elt: GCCTriple);
2154 }
2155
2156 // Compute the set of prefixes for our search.
2157 SmallVector<std::string, 8> Prefixes;
2158 StringRef GCCToolchainDir = getGCCToolchainDir(Args, SysRoot: D.SysRoot);
2159 if (GCCToolchainDir != "") {
2160 if (GCCToolchainDir.back() == '/')
2161 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
2162
2163 Prefixes.push_back(Elt: std::string(GCCToolchainDir));
2164 } else {
2165 // If we have a SysRoot, try that first.
2166 if (!D.SysRoot.empty()) {
2167 Prefixes.push_back(Elt: D.SysRoot);
2168 AddDefaultGCCPrefixes(TargetTriple, Prefixes, SysRoot: D.SysRoot);
2169 }
2170
2171 // Then look for gcc installed alongside clang.
2172 Prefixes.push_back(Elt: D.Dir + "/..");
2173
2174 // Next, look for prefix(es) that correspond to distribution-supplied gcc
2175 // installations.
2176 if (D.SysRoot.empty()) {
2177 // Typically /usr.
2178 AddDefaultGCCPrefixes(TargetTriple, Prefixes, SysRoot: D.SysRoot);
2179 }
2180
2181 // Try to respect gcc-config on Gentoo if --gcc-toolchain is not provided.
2182 // This avoids accidentally enforcing the system GCC version when using a
2183 // custom toolchain.
2184 SmallVector<StringRef, 16> GentooTestTriples;
2185 // Try to match an exact triple as target triple first.
2186 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for
2187 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu"
2188 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching
2189 // triple x86_64-gentoo-linux-gnu is present.
2190 GentooTestTriples.push_back(Elt: TargetTriple.str());
2191 GentooTestTriples.append(in_start: CandidateTripleAliases.begin(),
2192 in_end: CandidateTripleAliases.end());
2193 if (ScanGentooConfigs(TargetTriple, Args, CandidateTriples: GentooTestTriples,
2194 BiarchTriples: CandidateBiarchTripleAliases))
2195 return;
2196 }
2197
2198 // Loop over the various components which exist and select the best GCC
2199 // installation available. GCC installs are ranked by version number.
2200 const GCCVersion VersionZero = GCCVersion::Parse(VersionText: "0.0.0");
2201 Version = VersionZero;
2202 for (const std::string &Prefix : Prefixes) {
2203 auto &VFS = D.getVFS();
2204 if (!VFS.exists(Path: Prefix))
2205 continue;
2206 for (StringRef Suffix : CandidateLibDirs) {
2207 const std::string LibDir = concat(Path: Prefix, A: Suffix);
2208 if (!VFS.exists(Path: LibDir))
2209 continue;
2210 // Maybe filter out <libdir>/gcc and <libdir>/gcc-cross.
2211 bool GCCDirExists = VFS.exists(Path: LibDir + "/gcc");
2212 bool GCCCrossDirExists = VFS.exists(Path: LibDir + "/gcc-cross");
2213 for (StringRef Candidate : CandidateTripleAliases)
2214 ScanLibDirForGCCTriple(TargetArch: TargetTriple, Args, LibDir, CandidateTriple: Candidate, NeedsBiarchSuffix: false,
2215 GCCDirExists, GCCCrossDirExists);
2216 }
2217 for (StringRef Suffix : CandidateBiarchLibDirs) {
2218 const std::string LibDir = Prefix + Suffix.str();
2219 if (!VFS.exists(Path: LibDir))
2220 continue;
2221 bool GCCDirExists = VFS.exists(Path: LibDir + "/gcc");
2222 bool GCCCrossDirExists = VFS.exists(Path: LibDir + "/gcc-cross");
2223 for (StringRef Candidate : CandidateBiarchTripleAliases)
2224 ScanLibDirForGCCTriple(TargetArch: TargetTriple, Args, LibDir, CandidateTriple: Candidate, NeedsBiarchSuffix: true,
2225 GCCDirExists, GCCCrossDirExists);
2226 }
2227
2228 // Skip other prefixes once a GCC installation is found.
2229 if (Version > VersionZero)
2230 break;
2231 }
2232}
2233
2234void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
2235 for (const auto &InstallPath : CandidateGCCInstallPaths)
2236 OS << "Found candidate GCC installation: " << InstallPath << "\n";
2237
2238 if (!GCCInstallPath.empty())
2239 OS << "Selected GCC installation: " << GCCInstallPath << "\n";
2240
2241 for (const auto &Multilib : Multilibs)
2242 OS << "Candidate multilib: " << Multilib << "\n";
2243
2244 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault())
2245 OS << "Selected multilib: " << SelectedMultilib << "\n";
2246}
2247
2248bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const {
2249 if (BiarchSibling) {
2250 M = *BiarchSibling;
2251 return true;
2252 }
2253 return false;
2254}
2255
2256void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
2257 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes,
2258 StringRef SysRoot) {
2259
2260 if (TargetTriple.isOSHaiku()) {
2261 Prefixes.push_back(Elt: concat(Path: SysRoot, A: "/boot/system/develop/tools"));
2262 return;
2263 }
2264
2265 if (TargetTriple.isOSSolaris()) {
2266 // Solaris is a special case.
2267 // The GCC installation is under
2268 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/
2269 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with
2270 // /usr/gcc/<version> as a prefix.
2271
2272 SmallVector<std::pair<GCCVersion, std::string>, 8> SolarisPrefixes;
2273 std::string PrefixDir = concat(Path: SysRoot, A: "/usr/gcc");
2274 std::error_code EC;
2275 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(Dir: PrefixDir, EC),
2276 LE;
2277 !EC && LI != LE; LI = LI.increment(EC)) {
2278 StringRef VersionText = llvm::sys::path::filename(path: LI->path());
2279 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2280
2281 // Filter out obviously bad entries.
2282 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(RHSMajor: 4, RHSMinor: 1, RHSPatch: 1))
2283 continue;
2284
2285 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str();
2286 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc";
2287 if (!D.getVFS().exists(Path: CandidateLibPath))
2288 continue;
2289
2290 SolarisPrefixes.emplace_back(
2291 Args: std::make_pair(x&: CandidateVersion, y&: CandidatePrefix));
2292 }
2293 // Sort in reverse order so GCCInstallationDetector::init picks the latest.
2294 std::sort(first: SolarisPrefixes.rbegin(), last: SolarisPrefixes.rend());
2295 for (auto p : SolarisPrefixes)
2296 Prefixes.emplace_back(Args&: p.second);
2297 return;
2298 }
2299
2300 // For Linux, if --sysroot is not specified, look for RHEL/CentOS devtoolsets
2301 // and gcc-toolsets.
2302 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux &&
2303 D.getVFS().exists(Path: "/opt/rh")) {
2304 // TODO: We may want to remove this, since the functionality
2305 // can be achieved using config files.
2306 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-12/root/usr");
2307 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-11/root/usr");
2308 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-10/root/usr");
2309 Prefixes.push_back(Elt: "/opt/rh/devtoolset-12/root/usr");
2310 Prefixes.push_back(Elt: "/opt/rh/devtoolset-11/root/usr");
2311 Prefixes.push_back(Elt: "/opt/rh/devtoolset-10/root/usr");
2312 Prefixes.push_back(Elt: "/opt/rh/devtoolset-9/root/usr");
2313 Prefixes.push_back(Elt: "/opt/rh/devtoolset-8/root/usr");
2314 Prefixes.push_back(Elt: "/opt/rh/devtoolset-7/root/usr");
2315 Prefixes.push_back(Elt: "/opt/rh/devtoolset-6/root/usr");
2316 Prefixes.push_back(Elt: "/opt/rh/devtoolset-4/root/usr");
2317 Prefixes.push_back(Elt: "/opt/rh/devtoolset-3/root/usr");
2318 Prefixes.push_back(Elt: "/opt/rh/devtoolset-2/root/usr");
2319 }
2320
2321 // Fall back to /usr which is used by most non-Solaris systems.
2322 Prefixes.push_back(Elt: concat(Path: SysRoot, A: "/usr"));
2323}
2324
2325/*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
2326 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
2327 SmallVectorImpl<StringRef> &LibDirs,
2328 SmallVectorImpl<StringRef> &TripleAliases,
2329 SmallVectorImpl<StringRef> &BiarchLibDirs,
2330 SmallVectorImpl<StringRef> &BiarchTripleAliases) {
2331 // Declare a bunch of static data sets that we'll select between below. These
2332 // are specifically designed to always refer to string literals to avoid any
2333 // lifetime or initialization issues.
2334 //
2335 // The *Triples variables hard code some triples so that, for example,
2336 // --target=aarch64 (incomplete triple) can detect lib/aarch64-linux-gnu.
2337 // They are not needed when the user has correct LLVM_DEFAULT_TARGET_TRIPLE
2338 // and always uses the full --target (e.g. --target=aarch64-linux-gnu). The
2339 // lists should shrink over time. Please don't add more elements to *Triples.
2340 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
2341 static const char *const AArch64Triples[] = {
2342 "aarch64-none-linux-gnu", "aarch64-redhat-linux", "aarch64-suse-linux"};
2343 static const char *const AArch64beLibDirs[] = {"/lib"};
2344 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu"};
2345
2346 static const char *const ARMLibDirs[] = {"/lib"};
2347 static const char *const ARMTriples[] = {"arm-linux-gnueabi"};
2348 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
2349 "armv7hl-redhat-linux-gnueabi",
2350 "armv6hl-suse-linux-gnueabi",
2351 "armv7hl-suse-linux-gnueabi"};
2352 static const char *const ARMebLibDirs[] = {"/lib"};
2353 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi"};
2354 static const char *const ARMebHFTriples[] = {
2355 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
2356
2357 static const char *const AVRLibDirs[] = {"/lib"};
2358 static const char *const AVRTriples[] = {"avr"};
2359
2360 static const char *const CSKYLibDirs[] = {"/lib"};
2361 static const char *const CSKYTriples[] = {
2362 "csky-linux-gnuabiv2", "csky-linux-uclibcabiv2", "csky-elf-noneabiv2"};
2363
2364 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
2365 static const char *const X86_64Triples[] = {
2366 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
2367 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
2368 "x86_64-redhat-linux", "x86_64-suse-linux",
2369 "x86_64-manbo-linux-gnu", "x86_64-slackware-linux",
2370 "x86_64-unknown-linux", "x86_64-amazon-linux"};
2371 static const char *const X32Triples[] = {"x86_64-linux-gnux32",
2372 "x86_64-pc-linux-gnux32"};
2373 static const char *const X32LibDirs[] = {"/libx32", "/lib"};
2374 static const char *const X86LibDirs[] = {"/lib32", "/lib"};
2375 static const char *const X86Triples[] = {
2376 "i586-linux-gnu", "i686-linux-gnu", "i686-pc-linux-gnu",
2377 "i386-redhat-linux6E", "i686-redhat-linux", "i386-redhat-linux",
2378 "i586-suse-linux", "i686-montavista-linux",
2379 };
2380
2381 static const char *const LoongArch64LibDirs[] = {"/lib64", "/lib"};
2382 static const char *const LoongArch64Triples[] = {
2383 "loongarch64-linux-gnu", "loongarch64-unknown-linux-gnu"};
2384
2385 static const char *const M68kLibDirs[] = {"/lib"};
2386 static const char *const M68kTriples[] = {"m68k-unknown-linux-gnu",
2387 "m68k-suse-linux"};
2388
2389 static const char *const MIPSLibDirs[] = {"/libo32", "/lib"};
2390 static const char *const MIPSTriples[] = {
2391 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu",
2392 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"};
2393 static const char *const MIPSELLibDirs[] = {"/libo32", "/lib"};
2394 static const char *const MIPSELTriples[] = {"mipsel-linux-gnu",
2395 "mips-img-linux-gnu"};
2396
2397 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
2398 static const char *const MIPS64Triples[] = {
2399 "mips-mti-linux-gnu", "mips-img-linux-gnu", "mips64-linux-gnuabi64",
2400 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"};
2401 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
2402 static const char *const MIPS64ELTriples[] = {
2403 "mips-mti-linux-gnu", "mips-img-linux-gnu", "mips64el-linux-gnuabi64",
2404 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64"};
2405
2406 static const char *const MIPSN32LibDirs[] = {"/lib32"};
2407 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32",
2408 "mipsisa64r6-linux-gnuabin32"};
2409 static const char *const MIPSN32ELLibDirs[] = {"/lib32"};
2410 static const char *const MIPSN32ELTriples[] = {
2411 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"};
2412
2413 static const char *const MSP430LibDirs[] = {"/lib"};
2414 static const char *const MSP430Triples[] = {"msp430-elf"};
2415
2416 static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
2417 static const char *const PPCTriples[] = {
2418 "powerpc-unknown-linux-gnu",
2419 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a
2420 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux".
2421 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"};
2422 static const char *const PPCLELibDirs[] = {"/lib32", "/lib"};
2423 static const char *const PPCLETriples[] = {"powerpcle-unknown-linux-gnu",
2424 "powerpcle-linux-musl"};
2425
2426 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
2427 static const char *const PPC64Triples[] = {"powerpc64-unknown-linux-gnu",
2428 "powerpc64-suse-linux",
2429 "ppc64-redhat-linux"};
2430 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
2431 static const char *const PPC64LETriples[] = {
2432 "powerpc64le-unknown-linux-gnu", "powerpc64le-none-linux-gnu",
2433 "powerpc64le-suse-linux", "ppc64le-redhat-linux"};
2434
2435 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"};
2436 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu",
2437 "riscv32-unknown-elf"};
2438 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"};
2439 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu",
2440 "riscv64-unknown-elf"};
2441
2442 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
2443 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
2444 "sparcv8-linux-gnu"};
2445 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
2446 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
2447 "sparcv9-linux-gnu"};
2448
2449 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
2450 static const char *const SystemZTriples[] = {
2451 "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu", "s390x-suse-linux",
2452 "s390x-redhat-linux"};
2453
2454 using std::begin;
2455 using std::end;
2456
2457 if (TargetTriple.isOSSolaris()) {
2458 static const char *const SolarisLibDirs[] = {"/lib"};
2459 static const char *const SolarisSparcV8Triples[] = {
2460 "sparc-sun-solaris2.11"};
2461 static const char *const SolarisSparcV9Triples[] = {
2462 "sparcv9-sun-solaris2.11"};
2463 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11"};
2464 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11"};
2465 LibDirs.append(in_start: begin(arr: SolarisLibDirs), in_end: end(arr: SolarisLibDirs));
2466 BiarchLibDirs.append(in_start: begin(arr: SolarisLibDirs), in_end: end(arr: SolarisLibDirs));
2467 switch (TargetTriple.getArch()) {
2468 case llvm::Triple::x86:
2469 TripleAliases.append(in_start: begin(arr: SolarisX86Triples), in_end: end(arr: SolarisX86Triples));
2470 BiarchTripleAliases.append(in_start: begin(arr: SolarisX86_64Triples),
2471 in_end: end(arr: SolarisX86_64Triples));
2472 break;
2473 case llvm::Triple::x86_64:
2474 TripleAliases.append(in_start: begin(arr: SolarisX86_64Triples),
2475 in_end: end(arr: SolarisX86_64Triples));
2476 BiarchTripleAliases.append(in_start: begin(arr: SolarisX86Triples),
2477 in_end: end(arr: SolarisX86Triples));
2478 break;
2479 case llvm::Triple::sparc:
2480 TripleAliases.append(in_start: begin(arr: SolarisSparcV8Triples),
2481 in_end: end(arr: SolarisSparcV8Triples));
2482 BiarchTripleAliases.append(in_start: begin(arr: SolarisSparcV9Triples),
2483 in_end: end(arr: SolarisSparcV9Triples));
2484 break;
2485 case llvm::Triple::sparcv9:
2486 TripleAliases.append(in_start: begin(arr: SolarisSparcV9Triples),
2487 in_end: end(arr: SolarisSparcV9Triples));
2488 BiarchTripleAliases.append(in_start: begin(arr: SolarisSparcV8Triples),
2489 in_end: end(arr: SolarisSparcV8Triples));
2490 break;
2491 default:
2492 break;
2493 }
2494 return;
2495 }
2496
2497 // Android targets should not use GNU/Linux tools or libraries.
2498 if (TargetTriple.isAndroid()) {
2499 static const char *const AArch64AndroidTriples[] = {
2500 "aarch64-linux-android"};
2501 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"};
2502 static const char *const X86AndroidTriples[] = {"i686-linux-android"};
2503 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"};
2504
2505 switch (TargetTriple.getArch()) {
2506 case llvm::Triple::aarch64:
2507 LibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2508 TripleAliases.append(in_start: begin(arr: AArch64AndroidTriples),
2509 in_end: end(arr: AArch64AndroidTriples));
2510 break;
2511 case llvm::Triple::arm:
2512 case llvm::Triple::thumb:
2513 LibDirs.append(in_start: begin(arr: ARMLibDirs), in_end: end(arr: ARMLibDirs));
2514 TripleAliases.append(in_start: begin(arr: ARMAndroidTriples), in_end: end(arr: ARMAndroidTriples));
2515 break;
2516 case llvm::Triple::x86_64:
2517 LibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2518 TripleAliases.append(in_start: begin(arr: X86_64AndroidTriples),
2519 in_end: end(arr: X86_64AndroidTriples));
2520 BiarchLibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2521 BiarchTripleAliases.append(in_start: begin(arr: X86AndroidTriples),
2522 in_end: end(arr: X86AndroidTriples));
2523 break;
2524 case llvm::Triple::x86:
2525 LibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2526 TripleAliases.append(in_start: begin(arr: X86AndroidTriples), in_end: end(arr: X86AndroidTriples));
2527 BiarchLibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2528 BiarchTripleAliases.append(in_start: begin(arr: X86_64AndroidTriples),
2529 in_end: end(arr: X86_64AndroidTriples));
2530 break;
2531 default:
2532 break;
2533 }
2534
2535 return;
2536 }
2537
2538 if (TargetTriple.isOSHurd()) {
2539 switch (TargetTriple.getArch()) {
2540 case llvm::Triple::x86_64:
2541 LibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2542 TripleAliases.push_back(Elt: "x86_64-gnu");
2543 break;
2544 case llvm::Triple::x86:
2545 LibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2546 TripleAliases.push_back(Elt: "i686-gnu");
2547 break;
2548 default:
2549 break;
2550 }
2551
2552 return;
2553 }
2554
2555 if (TargetTriple.isWindowsCygwinEnvironment()) {
2556 LibDirs.push_back(Elt: "/lib");
2557 switch (TargetTriple.getArch()) {
2558 case llvm::Triple::x86_64:
2559 TripleAliases.append(IL: {"x86_64-pc-cygwin", "x86_64-pc-msys"});
2560 break;
2561 case llvm::Triple::x86:
2562 TripleAliases.append(IL: {"i686-pc-cygwin", "i686-pc-msys"});
2563 break;
2564 default:
2565 break;
2566 }
2567
2568 return;
2569 }
2570
2571 switch (TargetTriple.getArch()) {
2572 case llvm::Triple::aarch64:
2573 LibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2574 TripleAliases.append(in_start: begin(arr: AArch64Triples), in_end: end(arr: AArch64Triples));
2575 BiarchLibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2576 BiarchTripleAliases.append(in_start: begin(arr: AArch64Triples), in_end: end(arr: AArch64Triples));
2577 break;
2578 case llvm::Triple::aarch64_be:
2579 LibDirs.append(in_start: begin(arr: AArch64beLibDirs), in_end: end(arr: AArch64beLibDirs));
2580 TripleAliases.append(in_start: begin(arr: AArch64beTriples), in_end: end(arr: AArch64beTriples));
2581 BiarchLibDirs.append(in_start: begin(arr: AArch64beLibDirs), in_end: end(arr: AArch64beLibDirs));
2582 BiarchTripleAliases.append(in_start: begin(arr: AArch64beTriples), in_end: end(arr: AArch64beTriples));
2583 break;
2584 case llvm::Triple::arm:
2585 case llvm::Triple::thumb:
2586 LibDirs.append(in_start: begin(arr: ARMLibDirs), in_end: end(arr: ARMLibDirs));
2587 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF ||
2588 TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHFT64 ||
2589 TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF ||
2590 TargetTriple.getEnvironment() == llvm::Triple::EABIHF) {
2591 TripleAliases.append(in_start: begin(arr: ARMHFTriples), in_end: end(arr: ARMHFTriples));
2592 } else {
2593 TripleAliases.append(in_start: begin(arr: ARMTriples), in_end: end(arr: ARMTriples));
2594 }
2595 break;
2596 case llvm::Triple::armeb:
2597 case llvm::Triple::thumbeb:
2598 LibDirs.append(in_start: begin(arr: ARMebLibDirs), in_end: end(arr: ARMebLibDirs));
2599 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF ||
2600 TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHFT64 ||
2601 TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF ||
2602 TargetTriple.getEnvironment() == llvm::Triple::EABIHF) {
2603 TripleAliases.append(in_start: begin(arr: ARMebHFTriples), in_end: end(arr: ARMebHFTriples));
2604 } else {
2605 TripleAliases.append(in_start: begin(arr: ARMebTriples), in_end: end(arr: ARMebTriples));
2606 }
2607 break;
2608 case llvm::Triple::avr:
2609 LibDirs.append(in_start: begin(arr: AVRLibDirs), in_end: end(arr: AVRLibDirs));
2610 TripleAliases.append(in_start: begin(arr: AVRTriples), in_end: end(arr: AVRTriples));
2611 break;
2612 case llvm::Triple::csky:
2613 LibDirs.append(in_start: begin(arr: CSKYLibDirs), in_end: end(arr: CSKYLibDirs));
2614 TripleAliases.append(in_start: begin(arr: CSKYTriples), in_end: end(arr: CSKYTriples));
2615 break;
2616 case llvm::Triple::x86_64:
2617 if (TargetTriple.isX32()) {
2618 LibDirs.append(in_start: begin(arr: X32LibDirs), in_end: end(arr: X32LibDirs));
2619 TripleAliases.append(in_start: begin(arr: X32Triples), in_end: end(arr: X32Triples));
2620 BiarchLibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2621 BiarchTripleAliases.append(in_start: begin(arr: X86_64Triples), in_end: end(arr: X86_64Triples));
2622 } else {
2623 LibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2624 TripleAliases.append(in_start: begin(arr: X86_64Triples), in_end: end(arr: X86_64Triples));
2625 BiarchLibDirs.append(in_start: begin(arr: X32LibDirs), in_end: end(arr: X32LibDirs));
2626 BiarchTripleAliases.append(in_start: begin(arr: X32Triples), in_end: end(arr: X32Triples));
2627 }
2628 BiarchLibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2629 BiarchTripleAliases.append(in_start: begin(arr: X86Triples), in_end: end(arr: X86Triples));
2630 break;
2631 case llvm::Triple::x86:
2632 LibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2633 // MCU toolchain is 32 bit only and its triple alias is TargetTriple
2634 // itself, which will be appended below.
2635 if (!TargetTriple.isOSIAMCU()) {
2636 TripleAliases.append(in_start: begin(arr: X86Triples), in_end: end(arr: X86Triples));
2637 BiarchLibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2638 BiarchTripleAliases.append(in_start: begin(arr: X86_64Triples), in_end: end(arr: X86_64Triples));
2639 BiarchLibDirs.append(in_start: begin(arr: X32LibDirs), in_end: end(arr: X32LibDirs));
2640 BiarchTripleAliases.append(in_start: begin(arr: X32Triples), in_end: end(arr: X32Triples));
2641 }
2642 break;
2643 // TODO: Handle loongarch32.
2644 case llvm::Triple::loongarch64:
2645 LibDirs.append(in_start: begin(arr: LoongArch64LibDirs), in_end: end(arr: LoongArch64LibDirs));
2646 TripleAliases.append(in_start: begin(arr: LoongArch64Triples), in_end: end(arr: LoongArch64Triples));
2647 break;
2648 case llvm::Triple::m68k:
2649 LibDirs.append(in_start: begin(arr: M68kLibDirs), in_end: end(arr: M68kLibDirs));
2650 TripleAliases.append(in_start: begin(arr: M68kTriples), in_end: end(arr: M68kTriples));
2651 break;
2652 case llvm::Triple::mips:
2653 LibDirs.append(in_start: begin(arr: MIPSLibDirs), in_end: end(arr: MIPSLibDirs));
2654 TripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2655 BiarchLibDirs.append(in_start: begin(arr: MIPS64LibDirs), in_end: end(arr: MIPS64LibDirs));
2656 BiarchTripleAliases.append(in_start: begin(arr: MIPS64Triples), in_end: end(arr: MIPS64Triples));
2657 BiarchLibDirs.append(in_start: begin(arr: MIPSN32LibDirs), in_end: end(arr: MIPSN32LibDirs));
2658 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32Triples), in_end: end(arr: MIPSN32Triples));
2659 break;
2660 case llvm::Triple::mipsel:
2661 LibDirs.append(in_start: begin(arr: MIPSELLibDirs), in_end: end(arr: MIPSELLibDirs));
2662 TripleAliases.append(in_start: begin(arr: MIPSELTriples), in_end: end(arr: MIPSELTriples));
2663 TripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2664 BiarchLibDirs.append(in_start: begin(arr: MIPS64ELLibDirs), in_end: end(arr: MIPS64ELLibDirs));
2665 BiarchTripleAliases.append(in_start: begin(arr: MIPS64ELTriples), in_end: end(arr: MIPS64ELTriples));
2666 BiarchLibDirs.append(in_start: begin(arr: MIPSN32ELLibDirs), in_end: end(arr: MIPSN32ELLibDirs));
2667 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32ELTriples), in_end: end(arr: MIPSN32ELTriples));
2668 break;
2669 case llvm::Triple::mips64:
2670 LibDirs.append(in_start: begin(arr: MIPS64LibDirs), in_end: end(arr: MIPS64LibDirs));
2671 TripleAliases.append(in_start: begin(arr: MIPS64Triples), in_end: end(arr: MIPS64Triples));
2672 BiarchLibDirs.append(in_start: begin(arr: MIPSLibDirs), in_end: end(arr: MIPSLibDirs));
2673 BiarchTripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2674 BiarchLibDirs.append(in_start: begin(arr: MIPSN32LibDirs), in_end: end(arr: MIPSN32LibDirs));
2675 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32Triples), in_end: end(arr: MIPSN32Triples));
2676 break;
2677 case llvm::Triple::mips64el:
2678 LibDirs.append(in_start: begin(arr: MIPS64ELLibDirs), in_end: end(arr: MIPS64ELLibDirs));
2679 TripleAliases.append(in_start: begin(arr: MIPS64ELTriples), in_end: end(arr: MIPS64ELTriples));
2680 BiarchLibDirs.append(in_start: begin(arr: MIPSELLibDirs), in_end: end(arr: MIPSELLibDirs));
2681 BiarchTripleAliases.append(in_start: begin(arr: MIPSELTriples), in_end: end(arr: MIPSELTriples));
2682 BiarchLibDirs.append(in_start: begin(arr: MIPSN32ELLibDirs), in_end: end(arr: MIPSN32ELLibDirs));
2683 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32ELTriples), in_end: end(arr: MIPSN32ELTriples));
2684 BiarchTripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2685 break;
2686 case llvm::Triple::msp430:
2687 LibDirs.append(in_start: begin(arr: MSP430LibDirs), in_end: end(arr: MSP430LibDirs));
2688 TripleAliases.append(in_start: begin(arr: MSP430Triples), in_end: end(arr: MSP430Triples));
2689 break;
2690 case llvm::Triple::ppc:
2691 LibDirs.append(in_start: begin(arr: PPCLibDirs), in_end: end(arr: PPCLibDirs));
2692 TripleAliases.append(in_start: begin(arr: PPCTriples), in_end: end(arr: PPCTriples));
2693 BiarchLibDirs.append(in_start: begin(arr: PPC64LibDirs), in_end: end(arr: PPC64LibDirs));
2694 BiarchTripleAliases.append(in_start: begin(arr: PPC64Triples), in_end: end(arr: PPC64Triples));
2695 break;
2696 case llvm::Triple::ppcle:
2697 LibDirs.append(in_start: begin(arr: PPCLELibDirs), in_end: end(arr: PPCLELibDirs));
2698 TripleAliases.append(in_start: begin(arr: PPCLETriples), in_end: end(arr: PPCLETriples));
2699 BiarchLibDirs.append(in_start: begin(arr: PPC64LELibDirs), in_end: end(arr: PPC64LELibDirs));
2700 BiarchTripleAliases.append(in_start: begin(arr: PPC64LETriples), in_end: end(arr: PPC64LETriples));
2701 break;
2702 case llvm::Triple::ppc64:
2703 LibDirs.append(in_start: begin(arr: PPC64LibDirs), in_end: end(arr: PPC64LibDirs));
2704 TripleAliases.append(in_start: begin(arr: PPC64Triples), in_end: end(arr: PPC64Triples));
2705 BiarchLibDirs.append(in_start: begin(arr: PPCLibDirs), in_end: end(arr: PPCLibDirs));
2706 BiarchTripleAliases.append(in_start: begin(arr: PPCTriples), in_end: end(arr: PPCTriples));
2707 break;
2708 case llvm::Triple::ppc64le:
2709 LibDirs.append(in_start: begin(arr: PPC64LELibDirs), in_end: end(arr: PPC64LELibDirs));
2710 TripleAliases.append(in_start: begin(arr: PPC64LETriples), in_end: end(arr: PPC64LETriples));
2711 BiarchLibDirs.append(in_start: begin(arr: PPCLELibDirs), in_end: end(arr: PPCLELibDirs));
2712 BiarchTripleAliases.append(in_start: begin(arr: PPCLETriples), in_end: end(arr: PPCLETriples));
2713 break;
2714 case llvm::Triple::riscv32:
2715 LibDirs.append(in_start: begin(arr: RISCV32LibDirs), in_end: end(arr: RISCV32LibDirs));
2716 TripleAliases.append(in_start: begin(arr: RISCV32Triples), in_end: end(arr: RISCV32Triples));
2717 BiarchLibDirs.append(in_start: begin(arr: RISCV64LibDirs), in_end: end(arr: RISCV64LibDirs));
2718 BiarchTripleAliases.append(in_start: begin(arr: RISCV64Triples), in_end: end(arr: RISCV64Triples));
2719 break;
2720 case llvm::Triple::riscv64:
2721 LibDirs.append(in_start: begin(arr: RISCV64LibDirs), in_end: end(arr: RISCV64LibDirs));
2722 TripleAliases.append(in_start: begin(arr: RISCV64Triples), in_end: end(arr: RISCV64Triples));
2723 BiarchLibDirs.append(in_start: begin(arr: RISCV32LibDirs), in_end: end(arr: RISCV32LibDirs));
2724 BiarchTripleAliases.append(in_start: begin(arr: RISCV32Triples), in_end: end(arr: RISCV32Triples));
2725 break;
2726 case llvm::Triple::sparc:
2727 case llvm::Triple::sparcel:
2728 LibDirs.append(in_start: begin(arr: SPARCv8LibDirs), in_end: end(arr: SPARCv8LibDirs));
2729 TripleAliases.append(in_start: begin(arr: SPARCv8Triples), in_end: end(arr: SPARCv8Triples));
2730 BiarchLibDirs.append(in_start: begin(arr: SPARCv9LibDirs), in_end: end(arr: SPARCv9LibDirs));
2731 BiarchTripleAliases.append(in_start: begin(arr: SPARCv9Triples), in_end: end(arr: SPARCv9Triples));
2732 break;
2733 case llvm::Triple::sparcv9:
2734 LibDirs.append(in_start: begin(arr: SPARCv9LibDirs), in_end: end(arr: SPARCv9LibDirs));
2735 TripleAliases.append(in_start: begin(arr: SPARCv9Triples), in_end: end(arr: SPARCv9Triples));
2736 BiarchLibDirs.append(in_start: begin(arr: SPARCv8LibDirs), in_end: end(arr: SPARCv8LibDirs));
2737 BiarchTripleAliases.append(in_start: begin(arr: SPARCv8Triples), in_end: end(arr: SPARCv8Triples));
2738 break;
2739 case llvm::Triple::systemz:
2740 LibDirs.append(in_start: begin(arr: SystemZLibDirs), in_end: end(arr: SystemZLibDirs));
2741 TripleAliases.append(in_start: begin(arr: SystemZTriples), in_end: end(arr: SystemZTriples));
2742 break;
2743 default:
2744 // By default, just rely on the standard lib directories and the original
2745 // triple.
2746 break;
2747 }
2748
2749 // Also include the multiarch variant if it's different.
2750 if (TargetTriple.str() != BiarchTriple.str())
2751 BiarchTripleAliases.push_back(Elt: BiarchTriple.str());
2752}
2753
2754bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2755 const llvm::Triple &TargetTriple, const ArgList &Args,
2756 StringRef Path, bool NeedsBiarchSuffix) {
2757 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2758 DetectedMultilibs Detected;
2759
2760 // Android standalone toolchain could have multilibs for ARM and Thumb.
2761 // Debian mips multilibs behave more like the rest of the biarch ones,
2762 // so handle them there
2763 if (isArmOrThumbArch(Arch: TargetArch) && TargetTriple.isAndroid()) {
2764 // It should also work without multilibs in a simplified toolchain.
2765 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Result&: Detected);
2766 } else if (TargetTriple.isCSKY()) {
2767 findCSKYMultilibs(D, TargetTriple, Path, Args, Result&: Detected);
2768 } else if (TargetTriple.isMIPS()) {
2769 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Result&: Detected))
2770 return false;
2771 } else if (TargetTriple.isRISCV()) {
2772 findRISCVMultilibs(D, TargetTriple, Path, Args, Result&: Detected);
2773 } else if (isMSP430(Arch: TargetArch)) {
2774 findMSP430Multilibs(D, TargetTriple, Path, Args, Result&: Detected);
2775 } else if (TargetArch == llvm::Triple::avr) {
2776 // AVR has no multilibs.
2777 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2778 NeedsBiarchSuffix, Result&: Detected)) {
2779 return false;
2780 }
2781
2782 Multilibs = Detected.Multilibs;
2783 SelectedMultilib = Detected.SelectedMultilibs.empty()
2784 ? Multilib()
2785 : Detected.SelectedMultilibs.back();
2786 BiarchSibling = Detected.BiarchSibling;
2787
2788 return true;
2789}
2790
2791void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2792 const llvm::Triple &TargetTriple, const ArgList &Args,
2793 const std::string &LibDir, StringRef CandidateTriple,
2794 bool NeedsBiarchSuffix, bool GCCDirExists, bool GCCCrossDirExists) {
2795 // Locations relative to the system lib directory where GCC's triple-specific
2796 // directories might reside.
2797 struct GCCLibSuffix {
2798 // Path from system lib directory to GCC triple-specific directory.
2799 std::string LibSuffix;
2800 // Path from GCC triple-specific directory back to system lib directory.
2801 // This is one '..' component per component in LibSuffix.
2802 StringRef ReversePath;
2803 // Whether this library suffix is relevant for the triple.
2804 bool Active;
2805 } Suffixes[] = {
2806 // This is the normal place.
2807 {.LibSuffix: "gcc/" + CandidateTriple.str(), .ReversePath: "../..", .Active: GCCDirExists},
2808
2809 // Debian puts cross-compilers in gcc-cross.
2810 {.LibSuffix: "gcc-cross/" + CandidateTriple.str(), .ReversePath: "../..", .Active: GCCCrossDirExists},
2811
2812 // The Freescale PPC SDK has the gcc libraries in
2813 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2814 // this on Freescale triples, though, since some systems put a *lot* of
2815 // files in that location, not just GCC installation data.
2816 {.LibSuffix: CandidateTriple.str(), .ReversePath: "..",
2817 .Active: TargetTriple.getVendor() == llvm::Triple::Freescale ||
2818 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}};
2819
2820 for (auto &Suffix : Suffixes) {
2821 if (!Suffix.Active)
2822 continue;
2823
2824 StringRef LibSuffix = Suffix.LibSuffix;
2825 std::error_code EC;
2826 for (llvm::vfs::directory_iterator
2827 LI = D.getVFS().dir_begin(Dir: LibDir + "/" + LibSuffix, EC),
2828 LE;
2829 !EC && LI != LE; LI = LI.increment(EC)) {
2830 StringRef VersionText = llvm::sys::path::filename(path: LI->path());
2831 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2832 if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2833 if (!CandidateGCCInstallPaths.insert(x: std::string(LI->path())).second)
2834 continue; // Saw this path before; no need to look at it again.
2835 if (CandidateVersion.isOlderThan(RHSMajor: 4, RHSMinor: 1, RHSPatch: 1))
2836 continue;
2837 if (CandidateVersion <= Version)
2838 continue;
2839
2840 if (!ScanGCCForMultilibs(TargetTriple, Args, Path: LI->path(),
2841 NeedsBiarchSuffix))
2842 continue;
2843
2844 Version = CandidateVersion;
2845 GCCTriple.setTriple(CandidateTriple);
2846 // FIXME: We hack together the directory name here instead of
2847 // using LI to ensure stable path separators across Windows and
2848 // Linux.
2849 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2850 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str();
2851 IsValid = true;
2852 }
2853 }
2854}
2855
2856bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs(
2857 const llvm::Triple &TargetTriple, const ArgList &Args,
2858 const SmallVectorImpl<StringRef> &CandidateTriples,
2859 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) {
2860 if (!D.getVFS().exists(Path: concat(Path: D.SysRoot, A: GentooConfigDir)))
2861 return false;
2862
2863 for (StringRef CandidateTriple : CandidateTriples) {
2864 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
2865 return true;
2866 }
2867
2868 for (StringRef CandidateTriple : CandidateBiarchTriples) {
2869 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, NeedsBiarchSuffix: true))
2870 return true;
2871 }
2872 return false;
2873}
2874
2875bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2876 const llvm::Triple &TargetTriple, const ArgList &Args,
2877 StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2878 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2879 D.getVFS().getBufferForFile(Name: concat(Path: D.SysRoot, A: GentooConfigDir,
2880 B: "/config-" + CandidateTriple.str()));
2881 if (File) {
2882 SmallVector<StringRef, 2> Lines;
2883 File.get()->getBuffer().split(A&: Lines, Separator: "\n");
2884 for (StringRef Line : Lines) {
2885 Line = Line.trim();
2886 // CURRENT=triple-version
2887 if (!Line.consume_front(Prefix: "CURRENT="))
2888 continue;
2889 // Process the config file pointed to by CURRENT.
2890 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile =
2891 D.getVFS().getBufferForFile(
2892 Name: concat(Path: D.SysRoot, A: GentooConfigDir, B: "/" + Line));
2893 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit(Separator: '-');
2894 // List of paths to scan for libraries.
2895 SmallVector<StringRef, 4> GentooScanPaths;
2896 // Scan the Config file to find installed GCC libraries path.
2897 // Typical content of the GCC config file:
2898 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/
2899 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32"
2900 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man"
2901 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info"
2902 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4"
2903 // We are looking for the paths listed in LDPATH=... .
2904 if (ConfigFile) {
2905 SmallVector<StringRef, 2> ConfigLines;
2906 ConfigFile.get()->getBuffer().split(A&: ConfigLines, Separator: "\n");
2907 for (StringRef ConfLine : ConfigLines) {
2908 ConfLine = ConfLine.trim();
2909 if (ConfLine.consume_front(Prefix: "LDPATH=")) {
2910 // Drop '"' from front and back if present.
2911 ConfLine.consume_back(Suffix: "\"");
2912 ConfLine.consume_front(Prefix: "\"");
2913 // Get all paths sperated by ':'
2914 ConfLine.split(A&: GentooScanPaths, Separator: ':', MaxSplit: -1, /*AllowEmpty*/ KeepEmpty: false);
2915 }
2916 }
2917 }
2918 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}.
2919 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/"
2920 + ActiveVersion.second.str();
2921 GentooScanPaths.push_back(Elt: StringRef(basePath));
2922
2923 // Scan all paths for GCC libraries.
2924 for (const auto &GentooScanPath : GentooScanPaths) {
2925 std::string GentooPath = concat(Path: D.SysRoot, A: GentooScanPath);
2926 if (D.getVFS().exists(Path: GentooPath + "/crtbegin.o")) {
2927 if (!ScanGCCForMultilibs(TargetTriple, Args, Path: GentooPath,
2928 NeedsBiarchSuffix))
2929 continue;
2930
2931 Version = GCCVersion::Parse(VersionText: ActiveVersion.second);
2932 GCCInstallPath = GentooPath;
2933 GCCParentLibPath = GentooPath + std::string("/../../..");
2934 GCCTriple.setTriple(ActiveVersion.first);
2935 IsValid = true;
2936 return true;
2937 }
2938 }
2939 }
2940 }
2941
2942 return false;
2943}
2944
2945Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
2946 const ArgList &Args)
2947 : ToolChain(D, Triple, Args), GCCInstallation(D),
2948 CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args),
2949 SYCLInstallation(D, Triple, Args) {
2950 getProgramPaths().push_back(Elt: getDriver().Dir);
2951}
2952
2953Generic_GCC::~Generic_GCC() {}
2954
2955Tool *Generic_GCC::getTool(Action::ActionClass AC) const {
2956 switch (AC) {
2957 case Action::PreprocessJobClass:
2958 if (!Preprocess)
2959 Preprocess.reset(p: new clang::driver::tools::gcc::Preprocessor(*this));
2960 return Preprocess.get();
2961 case Action::CompileJobClass:
2962 if (!Compile)
2963 Compile.reset(p: new tools::gcc::Compiler(*this));
2964 return Compile.get();
2965 default:
2966 return ToolChain::getTool(AC);
2967 }
2968}
2969
2970Tool *Generic_GCC::buildAssembler() const {
2971 return new tools::gnutools::Assembler(*this);
2972}
2973
2974Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
2975
2976void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
2977 // Print the information about how we detected the GCC installation.
2978 GCCInstallation.print(OS);
2979 CudaInstallation->print(OS);
2980 RocmInstallation->print(OS);
2981}
2982
2983ToolChain::UnwindTableLevel
2984Generic_GCC::getDefaultUnwindTableLevel(const ArgList &Args) const {
2985 switch (getArch()) {
2986 case llvm::Triple::aarch64:
2987 case llvm::Triple::aarch64_be:
2988 case llvm::Triple::ppc:
2989 case llvm::Triple::ppcle:
2990 case llvm::Triple::ppc64:
2991 case llvm::Triple::ppc64le:
2992 case llvm::Triple::riscv32:
2993 case llvm::Triple::riscv64:
2994 case llvm::Triple::x86:
2995 case llvm::Triple::x86_64:
2996 return UnwindTableLevel::Asynchronous;
2997 default:
2998 return UnwindTableLevel::None;
2999 }
3000}
3001
3002bool Generic_GCC::isPICDefault() const {
3003 switch (getArch()) {
3004 case llvm::Triple::x86_64:
3005 return getTriple().isOSWindows();
3006 case llvm::Triple::mips64:
3007 case llvm::Triple::mips64el:
3008 return true;
3009 default:
3010 return false;
3011 }
3012}
3013
3014bool Generic_GCC::isPIEDefault(const llvm::opt::ArgList &Args) const {
3015 return false;
3016}
3017
3018bool Generic_GCC::isPICDefaultForced() const {
3019 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
3020}
3021
3022bool Generic_GCC::IsIntegratedAssemblerDefault() const {
3023 switch (getTriple().getArch()) {
3024 case llvm::Triple::nvptx:
3025 case llvm::Triple::nvptx64:
3026 case llvm::Triple::xcore:
3027 return false;
3028 default:
3029 return true;
3030 }
3031}
3032
3033void Generic_GCC::PushPPaths(ToolChain::path_list &PPaths) {
3034 // Cross-compiling binutils and GCC installations (vanilla and openSUSE at
3035 // least) put various tools in a triple-prefixed directory off of the parent
3036 // of the GCC installation. We use the GCC triple here to ensure that we end
3037 // up with tools that support the same amount of cross compiling as the
3038 // detected GCC installation. For example, if we find a GCC installation
3039 // targeting x86_64, but it is a bi-arch GCC installation, it can also be
3040 // used to target i386.
3041 if (GCCInstallation.isValid()) {
3042 PPaths.push_back(Elt: Twine(GCCInstallation.getParentLibPath() + "/../" +
3043 GCCInstallation.getTriple().str() + "/bin")
3044 .str());
3045 }
3046}
3047
3048void Generic_GCC::AddMultilibPaths(const Driver &D,
3049 const std::string &SysRoot,
3050 const std::string &OSLibDir,
3051 const std::string &MultiarchTriple,
3052 path_list &Paths) {
3053 // Add the multilib suffixed paths where they are available.
3054 if (GCCInstallation.isValid()) {
3055 assert(!SelectedMultilibs.empty());
3056 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3057 const std::string &LibPath =
3058 std::string(GCCInstallation.getParentLibPath());
3059
3060 // Sourcery CodeBench MIPS toolchain holds some libraries under
3061 // a biarch-like suffix of the GCC installation.
3062 if (const auto &PathsCallback = Multilibs.filePathsCallback())
3063 for (const auto &Path : PathsCallback(SelectedMultilibs.back()))
3064 addPathIfExists(D, Path: GCCInstallation.getInstallPath() + Path, Paths);
3065
3066 // Add lib/gcc/$triple/$version, with an optional /multilib suffix.
3067 addPathIfExists(D,
3068 Path: GCCInstallation.getInstallPath() +
3069 SelectedMultilibs.back().gccSuffix(),
3070 Paths);
3071
3072 // Add lib/gcc/$triple/$libdir
3073 // For GCC built with --enable-version-specific-runtime-libs.
3074 addPathIfExists(D, Path: GCCInstallation.getInstallPath() + "/../" + OSLibDir,
3075 Paths);
3076
3077 // GCC cross compiling toolchains will install target libraries which ship
3078 // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as
3079 // any part of the GCC installation in
3080 // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat
3081 // debatable, but is the reality today. We need to search this tree even
3082 // when we have a sysroot somewhere else. It is the responsibility of
3083 // whomever is doing the cross build targeting a sysroot using a GCC
3084 // installation that is *not* within the system root to ensure two things:
3085 //
3086 // 1) Any DSOs that are linked in from this tree or from the install path
3087 // above must be present on the system root and found via an
3088 // appropriate rpath.
3089 // 2) There must not be libraries installed into
3090 // <prefix>/<triple>/<libdir> unless they should be preferred over
3091 // those within the system root.
3092 //
3093 // Note that this matches the GCC behavior. See the below comment for where
3094 // Clang diverges from GCC's behavior.
3095 addPathIfExists(D,
3096 Path: LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir +
3097 SelectedMultilibs.back().osSuffix(),
3098 Paths);
3099
3100 // If the GCC installation we found is inside of the sysroot, we want to
3101 // prefer libraries installed in the parent prefix of the GCC installation.
3102 // It is important to *not* use these paths when the GCC installation is
3103 // outside of the system root as that can pick up unintended libraries.
3104 // This usually happens when there is an external cross compiler on the
3105 // host system, and a more minimal sysroot available that is the target of
3106 // the cross. Note that GCC does include some of these directories in some
3107 // configurations but this seems somewhere between questionable and simply
3108 // a bug.
3109 if (StringRef(LibPath).starts_with(Prefix: SysRoot))
3110 addPathIfExists(D, Path: LibPath + "/../" + OSLibDir, Paths);
3111 }
3112}
3113
3114void Generic_GCC::AddMultiarchPaths(const Driver &D,
3115 const std::string &SysRoot,
3116 const std::string &OSLibDir,
3117 path_list &Paths) {
3118 if (GCCInstallation.isValid()) {
3119 const std::string &LibPath =
3120 std::string(GCCInstallation.getParentLibPath());
3121 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3122 const Multilib &Multilib = GCCInstallation.getMultilib();
3123 addPathIfExists(
3124 D, Path: LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(),
3125 Paths);
3126 }
3127}
3128
3129void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs,
3130 ArgStringList &CC1Args) const {
3131 // Add include directories specific to the selected multilib set and multilib.
3132 if (!GCCInstallation.isValid())
3133 return;
3134 // gcc TOOL_INCLUDE_DIR.
3135 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3136 std::string LibPath(GCCInstallation.getParentLibPath());
3137 addSystemInclude(DriverArgs, CC1Args,
3138 Path: Twine(LibPath) + "/../" + GCCTriple.str() + "/include");
3139
3140 const auto &Callback = Multilibs.includeDirsCallback();
3141 if (Callback) {
3142 for (const auto &Path : Callback(GCCInstallation.getMultilib()))
3143 addExternCSystemIncludeIfExists(DriverArgs, CC1Args,
3144 Path: GCCInstallation.getInstallPath() + Path);
3145 }
3146}
3147
3148void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
3149 ArgStringList &CC1Args) const {
3150 if (DriverArgs.hasArg(Ids: options::OPT_nostdinc, Ids: options::OPT_nostdincxx,
3151 Ids: options::OPT_nostdlibinc))
3152 return;
3153
3154 switch (GetCXXStdlibType(Args: DriverArgs)) {
3155 case ToolChain::CST_Libcxx:
3156 addLibCxxIncludePaths(DriverArgs, CC1Args);
3157 break;
3158
3159 case ToolChain::CST_Libstdcxx:
3160 addLibStdCxxIncludePaths(DriverArgs, CC1Args);
3161 break;
3162 }
3163}
3164
3165void Generic_GCC::addSYCLIncludeArgs(const ArgList &DriverArgs,
3166 ArgStringList &CC1Args) const {
3167 SYCLInstallation->addSYCLIncludeArgs(DriverArgs, CC1Args);
3168}
3169
3170void
3171Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3172 llvm::opt::ArgStringList &CC1Args) const {
3173 const Driver &D = getDriver();
3174 std::string SysRoot = computeSysRoot();
3175 if (SysRoot.empty())
3176 SysRoot = llvm::sys::path::get_separator();
3177
3178 auto AddIncludePath = [&](StringRef Path, bool TargetDirRequired = false) {
3179 std::string Version = detectLibcxxVersion(IncludePath: Path);
3180 if (Version.empty())
3181 return false;
3182
3183 // First add the per-target include path if it exists.
3184 bool TargetDirExists = false;
3185 std::optional<std::string> TargetIncludeDir = getTargetSubDirPath(BaseDir: Path);
3186 if (TargetIncludeDir) {
3187 SmallString<128> TargetDir(*TargetIncludeDir);
3188 llvm::sys::path::append(path&: TargetDir, a: "c++", b: Version);
3189 if (D.getVFS().exists(Path: TargetDir)) {
3190 addSystemInclude(DriverArgs, CC1Args, Path: TargetDir);
3191 TargetDirExists = true;
3192 }
3193 }
3194 if (TargetDirRequired && !TargetDirExists)
3195 return false;
3196
3197 // Second add the generic one.
3198 SmallString<128> GenericDir(Path);
3199 llvm::sys::path::append(path&: GenericDir, a: "c++", b: Version);
3200 addSystemInclude(DriverArgs, CC1Args, Path: GenericDir);
3201 return true;
3202 };
3203
3204 // Android only uses the libc++ headers installed alongside the toolchain if
3205 // they contain an Android-specific target include path, otherwise they're
3206 // incompatible with the NDK libraries.
3207 SmallString<128> DriverIncludeDir(getDriver().Dir);
3208 llvm::sys::path::append(path&: DriverIncludeDir, a: "..", b: "include");
3209 if (AddIncludePath(DriverIncludeDir,
3210 /*TargetDirRequired=*/getTriple().isAndroid()))
3211 return;
3212 // If this is a development, non-installed, clang, libcxx will
3213 // not be found at ../include/c++ but it likely to be found at
3214 // one of the following two locations:
3215 SmallString<128> UsrLocalIncludeDir(SysRoot);
3216 llvm::sys::path::append(path&: UsrLocalIncludeDir, a: "usr", b: "local", c: "include");
3217 if (AddIncludePath(UsrLocalIncludeDir))
3218 return;
3219 SmallString<128> UsrIncludeDir(SysRoot);
3220 llvm::sys::path::append(path&: UsrIncludeDir, a: "usr", b: "include");
3221 if (AddIncludePath(UsrIncludeDir))
3222 return;
3223}
3224
3225bool Generic_GCC::addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple,
3226 Twine IncludeSuffix,
3227 const llvm::opt::ArgList &DriverArgs,
3228 llvm::opt::ArgStringList &CC1Args,
3229 bool DetectDebian) const {
3230 if (!getVFS().exists(Path: IncludeDir))
3231 return false;
3232
3233 // Debian native gcc uses g++-multiarch-incdir.diff which uses
3234 // include/x86_64-linux-gnu/c++/10$IncludeSuffix instead of
3235 // include/c++/10/x86_64-linux-gnu$IncludeSuffix.
3236 std::string Dir = IncludeDir.str();
3237 StringRef Include =
3238 llvm::sys::path::parent_path(path: llvm::sys::path::parent_path(path: Dir));
3239 std::string Path =
3240 (Include + "/" + Triple + Dir.substr(pos: Include.size()) + IncludeSuffix)
3241 .str();
3242 if (DetectDebian && !getVFS().exists(Path))
3243 return false;
3244
3245 // GPLUSPLUS_INCLUDE_DIR
3246 addSystemInclude(DriverArgs, CC1Args, Path: IncludeDir);
3247 // GPLUSPLUS_TOOL_INCLUDE_DIR. If Triple is not empty, add a target-dependent
3248 // include directory.
3249 if (DetectDebian)
3250 addSystemInclude(DriverArgs, CC1Args, Path);
3251 else if (!Triple.empty())
3252 addSystemInclude(DriverArgs, CC1Args,
3253 Path: IncludeDir + "/" + Triple + IncludeSuffix);
3254 // GPLUSPLUS_BACKWARD_INCLUDE_DIR
3255 addSystemInclude(DriverArgs, CC1Args, Path: IncludeDir + "/backward");
3256 return true;
3257}
3258
3259bool Generic_GCC::addGCCLibStdCxxIncludePaths(
3260 const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args,
3261 StringRef DebianMultiarch) const {
3262 assert(GCCInstallation.isValid());
3263
3264 // By default, look for the C++ headers in an include directory adjacent to
3265 // the lib directory of the GCC installation. Note that this is expect to be
3266 // equivalent to '/usr/include/c++/X.Y' in almost all cases.
3267 StringRef LibDir = GCCInstallation.getParentLibPath();
3268 StringRef InstallDir = GCCInstallation.getInstallPath();
3269 StringRef TripleStr = GCCInstallation.getTriple().str();
3270 const Multilib &Multilib = GCCInstallation.getMultilib();
3271 const GCCVersion &Version = GCCInstallation.getVersion();
3272
3273 // Try /../$triple/include/c++/$version (gcc --print-multiarch is not empty).
3274 if (addLibStdCXXIncludePaths(
3275 IncludeDir: LibDir.str() + "/../" + TripleStr + "/include/c++/" + Version.Text,
3276 Triple: TripleStr, IncludeSuffix: Multilib.includeSuffix(), DriverArgs, CC1Args))
3277 return true;
3278
3279 // Try /gcc/$triple/$version/include/c++/ (gcc --print-multiarch is not
3280 // empty). Like above but for GCC built with
3281 // --enable-version-specific-runtime-libs.
3282 if (addLibStdCXXIncludePaths(IncludeDir: LibDir.str() + "/gcc/" + TripleStr + "/" +
3283 Version.Text + "/include/c++/",
3284 Triple: TripleStr, IncludeSuffix: Multilib.includeSuffix(), DriverArgs,
3285 CC1Args))
3286 return true;
3287
3288 // Detect Debian g++-multiarch-incdir.diff.
3289 if (addLibStdCXXIncludePaths(IncludeDir: LibDir.str() + "/../include/c++/" + Version.Text,
3290 Triple: DebianMultiarch, IncludeSuffix: Multilib.includeSuffix(),
3291 DriverArgs, CC1Args, /*Debian=*/DetectDebian: true))
3292 return true;
3293
3294 // Try /../include/c++/$version (gcc --print-multiarch is empty).
3295 if (addLibStdCXXIncludePaths(IncludeDir: LibDir.str() + "/../include/c++/" + Version.Text,
3296 Triple: TripleStr, IncludeSuffix: Multilib.includeSuffix(), DriverArgs,
3297 CC1Args))
3298 return true;
3299
3300 // Otherwise, fall back on a bunch of options which don't use multiarch
3301 // layouts for simplicity.
3302 const std::string LibStdCXXIncludePathCandidates[] = {
3303 // Gentoo is weird and places its headers inside the GCC install,
3304 // so if the first attempt to find the headers fails, try these patterns.
3305 InstallDir.str() + "/include/g++-v" + Version.Text,
3306 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." +
3307 Version.MinorStr,
3308 InstallDir.str() + "/include/g++-v" + Version.MajorStr,
3309 };
3310
3311 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) {
3312 if (addLibStdCXXIncludePaths(IncludeDir: IncludePath, Triple: TripleStr,
3313 IncludeSuffix: Multilib.includeSuffix(), DriverArgs, CC1Args))
3314 return true;
3315 }
3316 return false;
3317}
3318
3319void
3320Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3321 llvm::opt::ArgStringList &CC1Args) const {
3322 if (GCCInstallation.isValid()) {
3323 addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args,
3324 DebianMultiarch: GCCInstallation.getTriple().str());
3325 }
3326}
3327
3328llvm::opt::DerivedArgList *
3329Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args,
3330 StringRef BoundArch,
3331 Action::OffloadKind DeviceOffloadKind) const {
3332 if (DeviceOffloadKind != Action::OFK_SYCL &&
3333 DeviceOffloadKind != Action::OFK_OpenMP)
3334 return nullptr;
3335
3336 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
3337
3338 // Filter all the arguments we don't care passing to the offloading
3339 // toolchain as they can mess up with the creation of a shared library.
3340 const llvm::DenseSet<unsigned> OpenMPFiltered{
3341 options::OPT_shared, options::OPT_dynamic, options::OPT_static,
3342 options::OPT_fPIE, options::OPT_fno_PIE, options::OPT_fpie,
3343 options::OPT_fno_pie};
3344 for (auto *A : Args)
3345 if (DeviceOffloadKind != Action::OFK_OpenMP ||
3346 !OpenMPFiltered.contains(V: A->getOption().getID()))
3347 DAL->append(A);
3348
3349 // Request a shared library for CPU offloading. Given that these options
3350 // are decided implicitly, they do not refer to any base argument.
3351 const OptTable &Opts = getDriver().getOpts();
3352 if (DeviceOffloadKind == Action::OFK_OpenMP) {
3353 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opt: Opts.getOption(Opt: options::OPT_shared));
3354 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opt: Opts.getOption(Opt: options::OPT_fPIC));
3355 }
3356
3357 // Add the bound architecture to the arguments list if present.
3358 if (!BoundArch.empty()) {
3359 options::ID Opt =
3360 getTriple().isARM() || getTriple().isPPC() || getTriple().isAArch64()
3361 ? options::OPT_mcpu_EQ
3362 : options::OPT_march_EQ;
3363 DAL->eraseArg(Id: Opt);
3364 DAL->AddJoinedArg(BaseArg: nullptr, Opt: Opts.getOption(Opt), Value: BoundArch);
3365 }
3366 return DAL;
3367}
3368
3369void Generic_ELF::anchor() {}
3370
3371void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
3372 ArgStringList &CC1Args,
3373 Action::OffloadKind) const {
3374 if (!DriverArgs.hasFlag(Pos: options::OPT_fuse_init_array,
3375 Neg: options::OPT_fno_use_init_array, Default: true))
3376 CC1Args.push_back(Elt: "-fno-use-init-array");
3377}
3378