1//===--- Gnu.cpp - Gnu Tool and ToolChain Implementations -------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "Gnu.h"
10#include "Arch/ARM.h"
11#include "Arch/CSKY.h"
12#include "Arch/LoongArch.h"
13#include "Arch/Mips.h"
14#include "Arch/PPC.h"
15#include "Arch/RISCV.h"
16#include "Arch/Sparc.h"
17#include "Arch/SystemZ.h"
18#include "clang/Config/config.h" // for GCC_INSTALL_PREFIX
19#include "clang/Driver/CommonArgs.h"
20#include "clang/Driver/Compilation.h"
21#include "clang/Driver/Driver.h"
22#include "clang/Driver/MultilibBuilder.h"
23#include "clang/Driver/Tool.h"
24#include "clang/Driver/ToolChain.h"
25#include "clang/Options/Options.h"
26#include "llvm/ADT/StringSet.h"
27#include "llvm/ADT/Twine.h"
28#include "llvm/Option/ArgList.h"
29#include "llvm/Support/CodeGen.h"
30#include "llvm/Support/Path.h"
31#include "llvm/Support/VirtualFileSystem.h"
32#include "llvm/TargetParser/RISCVISAInfo.h"
33#include "llvm/TargetParser/TargetParser.h"
34#include <system_error>
35
36using namespace clang::driver;
37using namespace clang::driver::toolchains;
38using namespace clang;
39using namespace llvm::opt;
40
41using tools::addMultilibFlag;
42using tools::addPathIfExists;
43
44static bool forwardToGCC(const Option &O) {
45 // LinkerInput options have been forwarded. Don't duplicate.
46 if (O.hasFlag(Val: options::LinkerInput))
47 return false;
48 return O.matches(ID: options::OPT_Link_Group) || O.hasFlag(Val: options::LinkOption);
49}
50
51// Switch CPU names not recognized by GNU assembler to a close CPU that it does
52// recognize, instead of a lower march from being picked in the absence of a cpu
53// flag.
54static void normalizeCPUNamesForAssembler(const ArgList &Args,
55 ArgStringList &CmdArgs) {
56 if (Arg *A = Args.getLastArg(Ids: options::OPT_mcpu_EQ)) {
57 StringRef CPUArg(A->getValue());
58 if (CPUArg.equals_insensitive(RHS: "krait"))
59 CmdArgs.push_back(Elt: "-mcpu=cortex-a15");
60 else if (CPUArg.equals_insensitive(RHS: "kryo"))
61 CmdArgs.push_back(Elt: "-mcpu=cortex-a57");
62 else
63 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mcpu_EQ);
64 }
65}
66
67void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA,
68 const InputInfo &Output,
69 const InputInfoList &Inputs,
70 const ArgList &Args,
71 const char *LinkingOutput) const {
72 const Driver &D = getToolChain().getDriver();
73 ArgStringList CmdArgs;
74
75 for (const auto &A : Args) {
76 if (forwardToGCC(O: A->getOption())) {
77 // It is unfortunate that we have to claim here, as this means
78 // we will basically never report anything interesting for
79 // platforms using a generic gcc, even if we are just using gcc
80 // to get to the assembler.
81 A->claim();
82
83 A->render(Args, Output&: CmdArgs);
84 }
85 }
86
87 RenderExtraToolArgs(JA, CmdArgs);
88
89 // If using a driver, force the arch.
90 if (getToolChain().getTriple().isOSDarwin()) {
91 CmdArgs.push_back(Elt: "-arch");
92 CmdArgs.push_back(
93 Elt: Args.MakeArgString(Str: getToolChain().getDefaultUniversalArchName()));
94 }
95
96 // Try to force gcc to match the tool chain we want, if we recognize
97 // the arch.
98 //
99 // FIXME: The triple class should directly provide the information we want
100 // here.
101 switch (getToolChain().getArch()) {
102 default:
103 break;
104 case llvm::Triple::x86:
105 case llvm::Triple::ppc:
106 case llvm::Triple::ppcle:
107 CmdArgs.push_back(Elt: "-m32");
108 break;
109 case llvm::Triple::x86_64:
110 case llvm::Triple::ppc64:
111 case llvm::Triple::ppc64le:
112 CmdArgs.push_back(Elt: "-m64");
113 break;
114 case llvm::Triple::sparcel:
115 CmdArgs.push_back(Elt: "-EL");
116 break;
117 }
118
119 assert((Output.isFilename() || Output.isNothing()) && "Invalid output.");
120 if (Output.isFilename()) {
121 CmdArgs.push_back(Elt: "-o");
122 CmdArgs.push_back(Elt: Output.getFilename());
123 } else {
124 CmdArgs.push_back(Elt: "-fsyntax-only");
125 }
126
127 Args.AddAllArgValues(Output&: CmdArgs, Id0: options::OPT_Wa_COMMA, Id1: options::OPT_Xassembler);
128
129 // Only pass -x if gcc will understand it; otherwise hope gcc
130 // understands the suffix correctly. The main use case this would go
131 // wrong in is for linker inputs if they happened to have an odd
132 // suffix; really the only way to get this to happen is a command
133 // like '-x foobar a.c' which will treat a.c like a linker input.
134 //
135 // FIXME: For the linker case specifically, can we safely convert
136 // inputs into '-Wl,' options?
137 for (const auto &II : Inputs) {
138 // Don't try to pass LLVM or AST inputs to a generic gcc.
139 if (types::isLLVMIR(Id: II.getType()))
140 D.Diag(DiagID: clang::diag::err_drv_no_linker_llvm_support)
141 << getToolChain().getTripleString();
142 else if (II.getType() == types::TY_AST)
143 D.Diag(DiagID: diag::err_drv_no_ast_support) << getToolChain().getTripleString();
144 else if (II.getType() == types::TY_ModuleFile)
145 D.Diag(DiagID: diag::err_drv_no_module_support)
146 << getToolChain().getTripleString();
147
148 if (types::canTypeBeUserSpecified(Id: II.getType())) {
149 CmdArgs.push_back(Elt: "-x");
150 CmdArgs.push_back(Elt: types::getTypeName(Id: II.getType()));
151 }
152
153 if (II.isFilename())
154 CmdArgs.push_back(Elt: II.getFilename());
155 else {
156 const Arg &A = II.getInputArg();
157
158 // Reverse translate some rewritten options.
159 if (A.getOption().matches(ID: options::OPT_Z_reserved_lib_stdcxx)) {
160 CmdArgs.push_back(Elt: "-lstdc++");
161 continue;
162 }
163
164 // Don't render as input, we need gcc to do the translations.
165 A.render(Args, Output&: CmdArgs);
166 }
167 }
168
169 const std::string &customGCCName = D.getCCCGenericGCCName();
170 const char *GCCName;
171 if (!customGCCName.empty())
172 GCCName = customGCCName.c_str();
173 else if (D.CCCIsCXX()) {
174 GCCName = "g++";
175 } else
176 GCCName = "gcc";
177
178 const char *Exec = Args.MakeArgString(Str: getToolChain().GetProgramPath(Name: GCCName));
179 C.addCommand(C: std::make_unique<Command>(args: JA, args: *this,
180 args: ResponseFileSupport::AtFileCurCP(),
181 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
182}
183
184void tools::gcc::Preprocessor::RenderExtraToolArgs(
185 const JobAction &JA, ArgStringList &CmdArgs) const {
186 CmdArgs.push_back(Elt: "-E");
187}
188
189void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA,
190 ArgStringList &CmdArgs) const {
191 const Driver &D = getToolChain().getDriver();
192
193 switch (JA.getType()) {
194 // If -flto, etc. are present then make sure not to force assembly output.
195 case types::TY_LLVM_IR:
196 case types::TY_LTO_IR:
197 case types::TY_LLVM_BC:
198 case types::TY_LTO_BC:
199 CmdArgs.push_back(Elt: "-c");
200 break;
201 // We assume we've got an "integrated" assembler in that gcc will produce an
202 // object file itself.
203 case types::TY_Object:
204 CmdArgs.push_back(Elt: "-c");
205 break;
206 case types::TY_PP_Asm:
207 CmdArgs.push_back(Elt: "-S");
208 break;
209 case types::TY_Nothing:
210 CmdArgs.push_back(Elt: "-fsyntax-only");
211 break;
212 default:
213 D.Diag(DiagID: diag::err_drv_invalid_gcc_output_type) << getTypeName(Id: JA.getType());
214 }
215}
216
217void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA,
218 ArgStringList &CmdArgs) const {
219 // The types are (hopefully) good enough.
220}
221
222static bool getStatic(const ArgList &Args) {
223 return Args.hasArg(Ids: options::OPT_static) &&
224 !Args.hasArg(Ids: options::OPT_static_pie);
225}
226
227void tools::gnutools::StaticLibTool::ConstructJob(
228 Compilation &C, const JobAction &JA, const InputInfo &Output,
229 const InputInfoList &Inputs, const ArgList &Args,
230 const char *LinkingOutput) const {
231 const Driver &D = getToolChain().getDriver();
232
233 // Silence warning for "clang -g foo.o -o foo"
234 Args.ClaimAllArgs(Id0: options::OPT_g_Group);
235 // and "clang -emit-llvm foo.o -o foo"
236 Args.ClaimAllArgs(Id0: options::OPT_emit_llvm);
237 // and for "clang -w foo.o -o foo". Other warning options are already
238 // handled somewhere else.
239 Args.ClaimAllArgs(Id0: options::OPT_w);
240 // Silence warnings when linking C code with a C++ '-stdlib' argument.
241 Args.ClaimAllArgs(Id0: options::OPT_stdlib_EQ);
242
243 // ar tool command "llvm-ar <options> <output_file> <input_files>".
244 ArgStringList CmdArgs;
245 // Create and insert file members with a deterministic index.
246 CmdArgs.push_back(Elt: "rcsD");
247 CmdArgs.push_back(Elt: Output.getFilename());
248
249 for (const auto &II : Inputs) {
250 if (II.isFilename()) {
251 CmdArgs.push_back(Elt: II.getFilename());
252 }
253 }
254
255 // Delete old output archive file if it already exists before generating a new
256 // archive file.
257 auto OutputFileName = Output.getFilename();
258 if (Output.isFilename() && llvm::sys::fs::exists(Path: OutputFileName)) {
259 if (std::error_code EC = llvm::sys::fs::remove(path: OutputFileName)) {
260 D.Diag(DiagID: diag::err_drv_unable_to_remove_file) << EC.message();
261 return;
262 }
263 }
264
265 const char *Exec = Args.MakeArgString(Str: getToolChain().GetStaticLibToolPath());
266 C.addCommand(C: std::make_unique<Command>(args: JA, args: *this,
267 args: ResponseFileSupport::AtFileCurCP(),
268 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
269}
270
271void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA,
272 const InputInfo &Output,
273 const InputInfoList &Inputs,
274 const ArgList &Args,
275 const char *LinkingOutput) const {
276 // FIXME: The Linker class constructor takes a ToolChain and not a
277 // Generic_ELF, so the static_cast might return a reference to a invalid
278 // instance (see PR45061). Ideally, the Linker constructor needs to take a
279 // Generic_ELF instead.
280 const auto &ToolChain = static_cast<const Generic_ELF &>(getToolChain());
281 const Driver &D = ToolChain.getDriver();
282
283 const llvm::Triple &Triple = getToolChain().getEffectiveTriple();
284
285 const llvm::Triple::ArchType Arch = ToolChain.getArch();
286 const bool isOHOSFamily = ToolChain.getTriple().isOHOSFamily();
287 const bool isAndroid = ToolChain.getTriple().isAndroid();
288 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU();
289 const bool IsVE = ToolChain.getTriple().isVE();
290 const bool IsStaticPIE = getStaticPIE(Args, TC: ToolChain);
291 const bool IsStatic = getStatic(Args);
292 const bool HasCRTBeginEndFiles =
293 ToolChain.getTriple().hasEnvironment() ||
294 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies);
295
296 ArgStringList CmdArgs;
297
298 // Silence warning for "clang -g foo.o -o foo"
299 Args.ClaimAllArgs(Id0: options::OPT_g_Group);
300 // and "clang -emit-llvm foo.o -o foo"
301 Args.ClaimAllArgs(Id0: options::OPT_emit_llvm);
302 // and for "clang -w foo.o -o foo". Other warning options are already
303 // handled somewhere else.
304 Args.ClaimAllArgs(Id0: options::OPT_w);
305
306 if (!D.SysRoot.empty())
307 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "--sysroot=" + D.SysRoot));
308
309 if (Args.hasArg(Ids: options::OPT_s))
310 CmdArgs.push_back(Elt: "-s");
311
312 if (Triple.isARM() || Triple.isThumb()) {
313 bool IsBigEndian = arm::isARMBigEndian(Triple, Args);
314 if (IsBigEndian)
315 arm::appendBE8LinkFlag(Args, CmdArgs, Triple);
316 CmdArgs.push_back(Elt: IsBigEndian ? "-EB" : "-EL");
317 } else if (Triple.isAArch64()) {
318 CmdArgs.push_back(Elt: Arch == llvm::Triple::aarch64_be ? "-EB" : "-EL");
319 }
320
321 // Most Android ARM64 targets should enable the linker fix for erratum
322 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag.
323 if (Arch == llvm::Triple::aarch64 && (isAndroid || isOHOSFamily) &&
324 Args.hasFlag(Pos: options::OPT_mfix_cortex_a53_843419,
325 Neg: options::OPT_mno_fix_cortex_a53_843419, Default: true)) {
326 std::string CPU = getCPUName(D, Args, T: Triple);
327 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53")
328 CmdArgs.push_back(Elt: "--fix-cortex-a53-843419");
329 }
330
331 ToolChain.addExtraOpts(CmdArgs);
332
333 CmdArgs.push_back(Elt: "--eh-frame-hdr");
334
335 if (const char *LDMOption = getLDMOption(T: ToolChain.getTriple(), Args)) {
336 CmdArgs.push_back(Elt: "-m");
337 CmdArgs.push_back(Elt: LDMOption);
338 } else {
339 D.Diag(DiagID: diag::err_target_unknown_triple) << Triple.str();
340 return;
341 }
342
343 if (Triple.isLoongArch() || Triple.isRISCV()) {
344 CmdArgs.push_back(Elt: "-X");
345 if (Args.hasArg(Ids: options::OPT_mno_relax))
346 CmdArgs.push_back(Elt: "--no-relax");
347 }
348
349 const bool IsShared = Args.hasArg(Ids: options::OPT_shared);
350 if (IsShared)
351 CmdArgs.push_back(Elt: "-shared");
352 bool IsPIE = false;
353 if (IsStaticPIE) {
354 CmdArgs.push_back(Elt: "-static");
355 CmdArgs.push_back(Elt: "-pie");
356 CmdArgs.push_back(Elt: "--no-dynamic-linker");
357 CmdArgs.push_back(Elt: "-z");
358 CmdArgs.push_back(Elt: "text");
359 } else if (IsStatic) {
360 CmdArgs.push_back(Elt: "-static");
361 } else if (!Args.hasArg(Ids: options::OPT_r)) {
362 if (Args.hasArg(Ids: options::OPT_rdynamic))
363 CmdArgs.push_back(Elt: "-export-dynamic");
364 if (!IsShared) {
365 IsPIE = Args.hasFlag(Pos: options::OPT_pie, Neg: options::OPT_no_pie,
366 Default: ToolChain.isPIEDefault(Args));
367 if (IsPIE)
368 CmdArgs.push_back(Elt: "-pie");
369 CmdArgs.push_back(Elt: "-dynamic-linker");
370 CmdArgs.push_back(Elt: Args.MakeArgString(Str: Twine(D.DyldPrefix) +
371 ToolChain.getDynamicLinker(Args)));
372 }
373 }
374
375 CmdArgs.push_back(Elt: "-o");
376 CmdArgs.push_back(Elt: Output.getFilename());
377
378 if (!Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nostartfiles,
379 Ids: options::OPT_r)) {
380 if (!isAndroid && !IsIAMCU) {
381 const char *crt1 = nullptr;
382 if (!Args.hasArg(Ids: options::OPT_shared)) {
383 if (Args.hasArg(Ids: options::OPT_pg))
384 crt1 = "gcrt1.o";
385 else if (IsPIE)
386 crt1 = "Scrt1.o";
387 else if (IsStaticPIE)
388 crt1 = "rcrt1.o";
389 else
390 crt1 = "crt1.o";
391 }
392 if (crt1)
393 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: crt1)));
394
395 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crti.o")));
396 }
397
398 if (IsVE) {
399 CmdArgs.push_back(Elt: "-z");
400 CmdArgs.push_back(Elt: "max-page-size=0x4000000");
401 }
402
403 if (IsIAMCU)
404 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crt0.o")));
405 else if (HasCRTBeginEndFiles) {
406 std::string P;
407 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
408 !isAndroid) {
409 std::string crtbegin = ToolChain.getCompilerRT(Args, Component: "crtbegin",
410 Type: ToolChain::FT_Object);
411 if (ToolChain.getVFS().exists(Path: crtbegin))
412 P = crtbegin;
413 }
414 if (P.empty()) {
415 const char *crtbegin;
416 if (Args.hasArg(Ids: options::OPT_shared))
417 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o";
418 else if (IsStatic)
419 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o";
420 else if (IsPIE || IsStaticPIE)
421 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o";
422 else
423 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o";
424 P = ToolChain.GetFilePath(Name: crtbegin);
425 }
426 CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
427 }
428
429 // Add crtfastmath.o if available and fast math is enabled.
430 ToolChain.addFastMathRuntimeIfAvailable(Args, CmdArgs);
431
432 if (isAndroid && Args.hasFlag(Pos: options::OPT_fandroid_pad_segment,
433 Neg: options::OPT_fno_android_pad_segment, Default: false))
434 CmdArgs.push_back(
435 Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crt_pad_segment.o")));
436 }
437
438 Args.addAllArgs(Output&: CmdArgs, Ids: {options::OPT_L, options::OPT_u});
439
440 ToolChain.AddFilePathLibArgs(Args, CmdArgs);
441
442 if (D.isUsingLTO())
443 addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs,
444 IsThinLTO: D.getLTOMode() == LTOK_Thin);
445
446 if (Args.hasArg(Ids: options::OPT_Z_Xlinker__no_demangle))
447 CmdArgs.push_back(Elt: "--no-demangle");
448
449 bool NeedsSanitizerDeps = addSanitizerRuntimes(TC: ToolChain, Args, CmdArgs);
450 bool NeedsXRayDeps = addXRayRuntime(TC: ToolChain, Args, CmdArgs);
451 addLinkerCompressDebugSectionsOption(TC: ToolChain, Args, CmdArgs);
452 AddLinkerInputs(TC: ToolChain, Inputs, Args, CmdArgs, JA);
453
454 ToolChain.addOffloadRTLibs(ActiveKinds: C.getActiveOffloadKinds(), Args, CmdArgs);
455
456 // The profile runtime also needs access to system libraries.
457 getToolChain().addProfileRTLibs(Args, CmdArgs);
458
459 if (D.CCCIsCXX() &&
460 !Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nodefaultlibs,
461 Ids: options::OPT_r)) {
462 if (ToolChain.ShouldLinkCXXStdlib(Args)) {
463 bool OnlyLibstdcxxStatic = Args.hasArg(Ids: options::OPT_static_libstdcxx) &&
464 !Args.hasArg(Ids: options::OPT_static);
465 if (OnlyLibstdcxxStatic)
466 CmdArgs.push_back(Elt: "-Bstatic");
467 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs);
468 if (OnlyLibstdcxxStatic)
469 CmdArgs.push_back(Elt: "-Bdynamic");
470 }
471 CmdArgs.push_back(Elt: "-lm");
472 }
473
474 // Silence warnings when linking C code with a C++ '-stdlib' argument.
475 Args.ClaimAllArgs(Id0: options::OPT_stdlib_EQ);
476
477 // Additional linker set-up and flags for Fortran. This is required in order
478 // to generate executables. As Fortran runtime depends on the C runtime,
479 // these dependencies need to be listed before the C runtime below (i.e.
480 // AddRunTimeLibs).
481 if (D.IsFlangMode() &&
482 !Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_nodefaultlibs)) {
483 ToolChain.addFortranRuntimeLibraryPath(Args, CmdArgs);
484 ToolChain.addFortranRuntimeLibs(Args, CmdArgs);
485 CmdArgs.push_back(Elt: "-lm");
486 }
487
488 if (!Args.hasArg(Ids: options::OPT_nostdlib, Ids: options::OPT_r)) {
489 if (!Args.hasArg(Ids: options::OPT_nodefaultlibs)) {
490 if (IsStatic || IsStaticPIE)
491 CmdArgs.push_back(Elt: "--start-group");
492
493 if (NeedsSanitizerDeps)
494 linkSanitizerRuntimeDeps(TC: ToolChain, Args, CmdArgs);
495
496 if (NeedsXRayDeps)
497 linkXRayRuntimeDeps(TC: ToolChain, Args, CmdArgs);
498
499 bool WantPthread = Args.hasArg(Ids: options::OPT_pthread) ||
500 Args.hasArg(Ids: options::OPT_pthreads);
501
502 // Use the static OpenMP runtime with -static-openmp
503 bool StaticOpenMP = Args.hasArg(Ids: options::OPT_static_openmp) &&
504 !Args.hasArg(Ids: options::OPT_static);
505
506 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that
507 // require librt. Most modern Linux platforms do, but some may not.
508 if (addOpenMPRuntime(C, CmdArgs, TC: ToolChain, Args, ForceStaticHostRuntime: StaticOpenMP,
509 IsOffloadingHost: JA.isHostOffloading(OKind: Action::OFK_OpenMP),
510 /* GompNeedsRT= */ true))
511 // OpenMP runtimes implies pthreads when using the GNU toolchain.
512 // FIXME: Does this really make sense for all GNU toolchains?
513 WantPthread = true;
514
515 AddRunTimeLibs(TC: ToolChain, D, CmdArgs, Args);
516
517 // LLVM support for atomics on 32-bit SPARC V8+ is incomplete, so
518 // forcibly link with libatomic as a workaround.
519 // TODO: Issue #41880 and D118021.
520 if (getToolChain().getTriple().getArch() == llvm::Triple::sparc) {
521 CmdArgs.push_back(Elt: "--push-state");
522 CmdArgs.push_back(Elt: "--as-needed");
523 CmdArgs.push_back(Elt: "-latomic");
524 CmdArgs.push_back(Elt: "--pop-state");
525 }
526
527 // We don't need libpthread neither for bionic (Android) nor for musl,
528 // (used by OHOS as runtime library).
529 if (WantPthread && !isAndroid && !isOHOSFamily)
530 CmdArgs.push_back(Elt: "-lpthread");
531
532 if (Args.hasArg(Ids: options::OPT_fsplit_stack))
533 CmdArgs.push_back(Elt: "--wrap=pthread_create");
534
535 if (!Args.hasArg(Ids: options::OPT_nolibc))
536 CmdArgs.push_back(Elt: "-lc");
537
538 // Add IAMCU specific libs, if needed.
539 if (IsIAMCU)
540 CmdArgs.push_back(Elt: "-lgloss");
541
542 if (IsStatic || IsStaticPIE)
543 CmdArgs.push_back(Elt: "--end-group");
544 else
545 AddRunTimeLibs(TC: ToolChain, D, CmdArgs, Args);
546
547 // Add IAMCU specific libs (outside the group), if needed.
548 if (IsIAMCU) {
549 CmdArgs.push_back(Elt: "--as-needed");
550 CmdArgs.push_back(Elt: "-lsoftfp");
551 CmdArgs.push_back(Elt: "--no-as-needed");
552 }
553 }
554
555 if (!Args.hasArg(Ids: options::OPT_nostartfiles) && !IsIAMCU) {
556 if (HasCRTBeginEndFiles) {
557 std::string P;
558 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT &&
559 !isAndroid) {
560 std::string crtend = ToolChain.getCompilerRT(Args, Component: "crtend",
561 Type: ToolChain::FT_Object);
562 if (ToolChain.getVFS().exists(Path: crtend))
563 P = crtend;
564 }
565 if (P.empty()) {
566 const char *crtend;
567 if (Args.hasArg(Ids: options::OPT_shared))
568 crtend = isAndroid ? "crtend_so.o" : "crtendS.o";
569 else if (IsPIE || IsStaticPIE)
570 crtend = isAndroid ? "crtend_android.o" : "crtendS.o";
571 else
572 crtend = isAndroid ? "crtend_android.o" : "crtend.o";
573 P = ToolChain.GetFilePath(Name: crtend);
574 }
575 CmdArgs.push_back(Elt: Args.MakeArgString(Str: P));
576 }
577 if (!isAndroid)
578 CmdArgs.push_back(Elt: Args.MakeArgString(Str: ToolChain.GetFilePath(Name: "crtn.o")));
579 }
580 }
581
582 Args.addAllArgs(Output&: CmdArgs, Ids: {options::OPT_T, options::OPT_t});
583
584 const char *Exec = Args.MakeArgString(Str: ToolChain.GetLinkerPath());
585 C.addCommand(C: std::make_unique<Command>(args: JA, args: *this,
586 args: ResponseFileSupport::AtFileCurCP(),
587 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
588}
589
590void tools::gnutools::Assembler::ConstructJob(Compilation &C,
591 const JobAction &JA,
592 const InputInfo &Output,
593 const InputInfoList &Inputs,
594 const ArgList &Args,
595 const char *LinkingOutput) const {
596 const auto &D = getToolChain().getDriver();
597
598 claimNoWarnArgs(Args);
599
600 ArgStringList CmdArgs;
601
602 llvm::Reloc::Model RelocationModel;
603 unsigned PICLevel;
604 bool IsPIE;
605 const char *DefaultAssembler = "as";
606 // Enforce GNU as on Solaris; the native assembler's input syntax isn't fully
607 // compatible.
608 if (getToolChain().getTriple().isOSSolaris())
609 DefaultAssembler = "gas";
610 std::tie(args&: RelocationModel, args&: PICLevel, args&: IsPIE) =
611 ParsePICArgs(ToolChain: getToolChain(), Args);
612
613 if (const Arg *A = Args.getLastArg(Ids: options::OPT_gz, Ids: options::OPT_gz_EQ)) {
614 if (A->getOption().getID() == options::OPT_gz) {
615 CmdArgs.push_back(Elt: "--compress-debug-sections");
616 } else {
617 StringRef Value = A->getValue();
618 if (Value == "none" || Value == "zlib" || Value == "zstd") {
619 CmdArgs.push_back(
620 Elt: Args.MakeArgString(Str: "--compress-debug-sections=" + Twine(Value)));
621 } else {
622 D.Diag(DiagID: diag::err_drv_unsupported_option_argument)
623 << A->getSpelling() << Value;
624 }
625 }
626 }
627
628 switch (getToolChain().getArch()) {
629 default:
630 break;
631 // Add --32/--64 to make sure we get the format we want.
632 // This is incomplete
633 case llvm::Triple::x86:
634 CmdArgs.push_back(Elt: "--32");
635 break;
636 case llvm::Triple::x86_64:
637 if (getToolChain().getTriple().isX32())
638 CmdArgs.push_back(Elt: "--x32");
639 else
640 CmdArgs.push_back(Elt: "--64");
641 break;
642 case llvm::Triple::ppc: {
643 CmdArgs.push_back(Elt: "-a32");
644 CmdArgs.push_back(Elt: "-mppc");
645 CmdArgs.push_back(Elt: "-mbig-endian");
646 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
647 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
648 break;
649 }
650 case llvm::Triple::ppcle: {
651 CmdArgs.push_back(Elt: "-a32");
652 CmdArgs.push_back(Elt: "-mppc");
653 CmdArgs.push_back(Elt: "-mlittle-endian");
654 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
655 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
656 break;
657 }
658 case llvm::Triple::ppc64: {
659 CmdArgs.push_back(Elt: "-a64");
660 CmdArgs.push_back(Elt: "-mppc64");
661 CmdArgs.push_back(Elt: "-mbig-endian");
662 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
663 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
664 break;
665 }
666 case llvm::Triple::ppc64le: {
667 CmdArgs.push_back(Elt: "-a64");
668 CmdArgs.push_back(Elt: "-mppc64");
669 CmdArgs.push_back(Elt: "-mlittle-endian");
670 CmdArgs.push_back(Elt: ppc::getPPCAsmModeForCPU(
671 Name: getCPUName(D, Args, T: getToolChain().getTriple())));
672 break;
673 }
674 case llvm::Triple::riscv32:
675 case llvm::Triple::riscv64:
676 case llvm::Triple::riscv32be:
677 case llvm::Triple::riscv64be: {
678 StringRef ABIName = riscv::getRISCVABI(Args, Triple: getToolChain().getTriple());
679 CmdArgs.push_back(Elt: "-mabi");
680 CmdArgs.push_back(Elt: ABIName.data());
681 std::string MArchName =
682 riscv::getRISCVArch(Args, Triple: getToolChain().getTriple());
683 CmdArgs.push_back(Elt: "-march");
684 CmdArgs.push_back(Elt: Args.MakeArgString(Str: MArchName));
685 if (!Args.hasFlag(Pos: options::OPT_mrelax, Neg: options::OPT_mno_relax, Default: true))
686 Args.addOptOutFlag(Output&: CmdArgs, Pos: options::OPT_mrelax, Neg: options::OPT_mno_relax);
687 break;
688 }
689 case llvm::Triple::sparc:
690 case llvm::Triple::sparcel: {
691 CmdArgs.push_back(Elt: "-32");
692 std::string CPU = getCPUName(D, Args, T: getToolChain().getTriple());
693 CmdArgs.push_back(
694 Elt: sparc::getSparcAsmModeForCPU(Name: CPU, Triple: getToolChain().getTriple()));
695 AddAssemblerKPIC(ToolChain: getToolChain(), Args, CmdArgs);
696 break;
697 }
698 case llvm::Triple::sparcv9: {
699 CmdArgs.push_back(Elt: "-64");
700 std::string CPU = getCPUName(D, Args, T: getToolChain().getTriple());
701 CmdArgs.push_back(
702 Elt: sparc::getSparcAsmModeForCPU(Name: CPU, Triple: getToolChain().getTriple()));
703 AddAssemblerKPIC(ToolChain: getToolChain(), Args, CmdArgs);
704 break;
705 }
706 case llvm::Triple::arm:
707 case llvm::Triple::armeb:
708 case llvm::Triple::thumb:
709 case llvm::Triple::thumbeb: {
710 const llvm::Triple &Triple2 = getToolChain().getTriple();
711 CmdArgs.push_back(Elt: arm::isARMBigEndian(Triple: Triple2, Args) ? "-EB" : "-EL");
712 switch (Triple2.getSubArch()) {
713 case llvm::Triple::ARMSubArch_v7:
714 CmdArgs.push_back(Elt: "-mfpu=neon");
715 break;
716 case llvm::Triple::ARMSubArch_v8:
717 CmdArgs.push_back(Elt: "-mfpu=crypto-neon-fp-armv8");
718 break;
719 default:
720 break;
721 }
722
723 switch (arm::getARMFloatABI(TC: getToolChain(), Args)) {
724 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!");
725 case arm::FloatABI::Soft:
726 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mfloat-abi=soft"));
727 break;
728 case arm::FloatABI::SoftFP:
729 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mfloat-abi=softfp"));
730 break;
731 case arm::FloatABI::Hard:
732 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mfloat-abi=hard"));
733 break;
734 }
735
736 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_march_EQ);
737 normalizeCPUNamesForAssembler(Args, CmdArgs);
738
739 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mfpu_EQ);
740 // The integrated assembler doesn't implement e_flags setting behavior for
741 // -meabi=gnu (gcc -mabi={apcs-gnu,atpcs} passes -meabi=gnu to gas). For
742 // compatibility we accept but warn.
743 if (Arg *A = Args.getLastArgNoClaim(Ids: options::OPT_mabi_EQ))
744 A->ignoreTargetSpecific();
745 break;
746 }
747 case llvm::Triple::aarch64:
748 case llvm::Triple::aarch64_be: {
749 CmdArgs.push_back(
750 Elt: getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL");
751 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_march_EQ);
752 normalizeCPUNamesForAssembler(Args, CmdArgs);
753
754 break;
755 }
756 case llvm::Triple::loongarch32: {
757 StringRef ABIName =
758 loongarch::getLoongArchABI(D, Args, Triple: getToolChain().getTriple());
759 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mabi=" + ABIName));
760 break;
761 }
762 case llvm::Triple::loongarch64: {
763 StringRef ABIName =
764 loongarch::getLoongArchABI(D, Args, Triple: getToolChain().getTriple());
765 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mabi=" + ABIName));
766 break;
767 }
768 case llvm::Triple::mips:
769 case llvm::Triple::mipsel:
770 case llvm::Triple::mips64:
771 case llvm::Triple::mips64el: {
772 StringRef CPUName;
773 StringRef ABIName;
774 mips::getMipsCPUAndABI(Args, Triple: getToolChain().getTriple(), CPUName, ABIName);
775 ABIName = mips::getGnuCompatibleMipsABIName(ABI: ABIName);
776
777 CmdArgs.push_back(Elt: "-march");
778 CmdArgs.push_back(Elt: CPUName.data());
779
780 CmdArgs.push_back(Elt: "-mabi");
781 CmdArgs.push_back(Elt: ABIName.data());
782
783 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE,
784 // or -mshared (not implemented) is in effect.
785 if (RelocationModel == llvm::Reloc::Static)
786 CmdArgs.push_back(Elt: "-mno-shared");
787
788 // LLVM doesn't support -mplt yet and acts as if it is always given.
789 // However, -mplt has no effect with the N64 ABI.
790 if (ABIName != "64" && !Args.hasArg(Ids: options::OPT_mno_abicalls))
791 CmdArgs.push_back(Elt: "-call_nonpic");
792
793 if (getToolChain().getTriple().isLittleEndian())
794 CmdArgs.push_back(Elt: "-EL");
795 else
796 CmdArgs.push_back(Elt: "-EB");
797
798 if (Arg *A = Args.getLastArg(Ids: options::OPT_mnan_EQ)) {
799 if (StringRef(A->getValue()) == "2008")
800 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mnan=2008"));
801 }
802
803 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default.
804 if (Arg *A = Args.getLastArg(Ids: options::OPT_mfp32, Ids: options::OPT_mfpxx,
805 Ids: options::OPT_mfp64)) {
806 A->claim();
807 A->render(Args, Output&: CmdArgs);
808 } else if (mips::shouldUseFPXX(
809 Args, Triple: getToolChain().getTriple(), CPUName, ABIName,
810 FloatABI: mips::getMipsFloatABI(D: getToolChain().getDriver(), Args,
811 Triple: getToolChain().getTriple())))
812 CmdArgs.push_back(Elt: "-mfpxx");
813
814 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of
815 // -mno-mips16 is actually -no-mips16.
816 if (Arg *A =
817 Args.getLastArg(Ids: options::OPT_mips16, Ids: options::OPT_mno_mips16)) {
818 if (A->getOption().matches(ID: options::OPT_mips16)) {
819 A->claim();
820 A->render(Args, Output&: CmdArgs);
821 } else {
822 A->claim();
823 CmdArgs.push_back(Elt: "-no-mips16");
824 }
825 }
826
827 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mmicromips,
828 Ids: options::OPT_mno_micromips);
829 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mdsp, Ids: options::OPT_mno_dsp);
830 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mdspr2, Ids: options::OPT_mno_dspr2);
831
832 if (Arg *A = Args.getLastArg(Ids: options::OPT_mmsa, Ids: options::OPT_mno_msa)) {
833 // Do not use AddLastArg because not all versions of MIPS assembler
834 // support -mmsa / -mno-msa options.
835 if (A->getOption().matches(ID: options::OPT_mmsa))
836 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-mmsa"));
837 }
838
839 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mhard_float,
840 Ids: options::OPT_msoft_float);
841
842 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_mdouble_float,
843 Ids: options::OPT_msingle_float);
844
845 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_modd_spreg,
846 Ids: options::OPT_mno_odd_spreg);
847
848 AddAssemblerKPIC(ToolChain: getToolChain(), Args, CmdArgs);
849 break;
850 }
851 case llvm::Triple::systemz: {
852 // Always pass an -march option, since our default of z10 is later
853 // than the GNU assembler's default.
854 std::string CPUName =
855 systemz::getSystemZTargetCPU(Args, T: getToolChain().getTriple());
856 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-march=" + CPUName));
857 break;
858 }
859 case llvm::Triple::ve:
860 DefaultAssembler = "nas";
861 }
862
863 for (const Arg *A : Args.filtered(Ids: options::OPT_ffile_prefix_map_EQ,
864 Ids: options::OPT_fdebug_prefix_map_EQ)) {
865 StringRef Map = A->getValue();
866 if (!Map.contains(C: '='))
867 D.Diag(DiagID: diag::err_drv_invalid_argument_to_option)
868 << Map << A->getOption().getName();
869 else {
870 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "--debug-prefix-map"));
871 CmdArgs.push_back(Elt: Args.MakeArgString(Str: Map));
872 }
873 A->claim();
874 }
875
876 Args.AddAllArgs(Output&: CmdArgs, Id0: options::OPT_I);
877 Args.AddAllArgValues(Output&: CmdArgs, Id0: options::OPT_Wa_COMMA, Id1: options::OPT_Xassembler);
878
879 CmdArgs.push_back(Elt: "-o");
880 CmdArgs.push_back(Elt: Output.getFilename());
881
882 for (const auto &II : Inputs)
883 CmdArgs.push_back(Elt: II.getFilename());
884
885 if (Arg *A = Args.getLastArg(Ids: options::OPT_g_Flag, Ids: options::OPT_gN_Group,
886 Ids: options::OPT_gdwarf_2, Ids: options::OPT_gdwarf_3,
887 Ids: options::OPT_gdwarf_4, Ids: options::OPT_gdwarf_5,
888 Ids: options::OPT_gdwarf))
889 if (!A->getOption().matches(ID: options::OPT_g0)) {
890 Args.AddLastArg(Output&: CmdArgs, Ids: options::OPT_g_Flag);
891
892 unsigned DwarfVersion = getDwarfVersion(TC: getToolChain(), Args);
893 CmdArgs.push_back(Elt: Args.MakeArgString(Str: "-gdwarf-" + Twine(DwarfVersion)));
894 }
895
896 const char *Exec =
897 Args.MakeArgString(Str: getToolChain().GetProgramPath(Name: DefaultAssembler));
898 C.addCommand(C: std::make_unique<Command>(args: JA, args: *this,
899 args: ResponseFileSupport::AtFileCurCP(),
900 args&: Exec, args&: CmdArgs, args: Inputs, args: Output));
901
902 // Handle the debug info splitting at object creation time if we're
903 // creating an object.
904 // TODO: Currently only works on linux with newer objcopy.
905 if (Args.hasArg(Ids: options::OPT_gsplit_dwarf) &&
906 getToolChain().getTriple().isOSLinux())
907 SplitDebugInfo(TC: getToolChain(), C, T: *this, JA, Args, Output,
908 OutFile: SplitDebugName(JA, Args, Input: Inputs[0], Output));
909}
910
911namespace {
912// Filter to remove Multilibs that don't exist as a suffix to Path
913class FilterNonExistent {
914 StringRef Base, File;
915 llvm::vfs::FileSystem &VFS;
916
917public:
918 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS)
919 : Base(Base), File(File), VFS(VFS) {}
920 bool operator()(const Multilib &M) {
921 return !VFS.exists(Path: Base + M.gccSuffix() + File);
922 }
923};
924} // end anonymous namespace
925
926static bool isSoftFloatABI(const ArgList &Args) {
927 Arg *A = Args.getLastArg(Ids: options::OPT_msoft_float, Ids: options::OPT_mhard_float,
928 Ids: options::OPT_mfloat_abi_EQ);
929 if (!A)
930 return false;
931
932 return A->getOption().matches(ID: options::OPT_msoft_float) ||
933 (A->getOption().matches(ID: options::OPT_mfloat_abi_EQ) &&
934 A->getValue() == StringRef("soft"));
935}
936
937static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) {
938 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb;
939}
940
941static bool isMipsEL(llvm::Triple::ArchType Arch) {
942 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el;
943}
944
945static bool isMips16(const ArgList &Args) {
946 Arg *A = Args.getLastArg(Ids: options::OPT_mips16, Ids: options::OPT_mno_mips16);
947 return A && A->getOption().matches(ID: options::OPT_mips16);
948}
949
950static bool isMicroMips(const ArgList &Args) {
951 Arg *A = Args.getLastArg(Ids: options::OPT_mmicromips, Ids: options::OPT_mno_micromips);
952 return A && A->getOption().matches(ID: options::OPT_mmicromips);
953}
954
955static bool isMSP430(llvm::Triple::ArchType Arch) {
956 return Arch == llvm::Triple::msp430;
957}
958
959static bool findMipsCsMultilibs(const Driver &D,
960 const Multilib::flags_list &Flags,
961 FilterNonExistent &NonExistent,
962 DetectedMultilibs &Result) {
963 // Check for Code Sourcery toolchain multilibs
964 MultilibSet CSMipsMultilibs;
965 {
966 auto MArchMips16 = MultilibBuilder("/mips16").flag(Flag: "-m32").flag(Flag: "-mips16");
967
968 auto MArchMicroMips =
969 MultilibBuilder("/micromips").flag(Flag: "-m32").flag(Flag: "-mmicromips");
970
971 auto MArchDefault = MultilibBuilder("")
972 .flag(Flag: "-mips16", /*Disallow=*/true)
973 .flag(Flag: "-mmicromips", /*Disallow=*/true);
974
975 auto UCLibc = MultilibBuilder("/uclibc").flag(Flag: "-muclibc");
976
977 auto SoftFloat = MultilibBuilder("/soft-float").flag(Flag: "-msoft-float");
978
979 auto Nan2008 = MultilibBuilder("/nan2008").flag(Flag: "-mnan=2008");
980
981 auto DefaultFloat = MultilibBuilder("")
982 .flag(Flag: "-msoft-float", /*Disallow=*/true)
983 .flag(Flag: "-mnan=2008", /*Disallow=*/true);
984
985 auto BigEndian =
986 MultilibBuilder("").flag(Flag: "-EB").flag(Flag: "-EL", /*Disallow=*/true);
987
988 auto LittleEndian =
989 MultilibBuilder("/el").flag(Flag: "-EL").flag(Flag: "-EB", /*Disallow=*/true);
990
991 // Note that this one's osSuffix is ""
992 auto MAbi64 = MultilibBuilder("")
993 .gccSuffix(S: "/64")
994 .includeSuffix(S: "/64")
995 .flag(Flag: "-mabi=n64")
996 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
997 .flag(Flag: "-m32", /*Disallow=*/true);
998
999 CSMipsMultilibs =
1000 MultilibSetBuilder()
1001 .Either(M1: MArchMips16, M2: MArchMicroMips, M3: MArchDefault)
1002 .Maybe(M: UCLibc)
1003 .Either(M1: SoftFloat, M2: Nan2008, M3: DefaultFloat)
1004 .FilterOut(Regex: "/micromips/nan2008")
1005 .FilterOut(Regex: "/mips16/nan2008")
1006 .Either(M1: BigEndian, M2: LittleEndian)
1007 .Maybe(M: MAbi64)
1008 .FilterOut(Regex: "/mips16.*/64")
1009 .FilterOut(Regex: "/micromips.*/64")
1010 .makeMultilibSet()
1011 .FilterOut(F: NonExistent)
1012 .setIncludeDirsCallback([](const Multilib &M) {
1013 std::vector<std::string> Dirs({"/include"});
1014 if (StringRef(M.includeSuffix()).starts_with(Prefix: "/uclibc"))
1015 Dirs.push_back(
1016 x: "/../../../../mips-linux-gnu/libc/uclibc/usr/include");
1017 else
1018 Dirs.push_back(x: "/../../../../mips-linux-gnu/libc/usr/include");
1019 return Dirs;
1020 });
1021 }
1022
1023 MultilibSet DebianMipsMultilibs;
1024 {
1025 MultilibBuilder MAbiN32 =
1026 MultilibBuilder().gccSuffix(S: "/n32").includeSuffix(S: "/n32").flag(
1027 Flag: "-mabi=n32");
1028
1029 MultilibBuilder M64 = MultilibBuilder()
1030 .gccSuffix(S: "/64")
1031 .includeSuffix(S: "/64")
1032 .flag(Flag: "-m64")
1033 .flag(Flag: "-m32", /*Disallow=*/true)
1034 .flag(Flag: "-mabi=n32", /*Disallow=*/true);
1035
1036 MultilibBuilder M32 = MultilibBuilder()
1037 .gccSuffix(S: "/32")
1038 .flag(Flag: "-m64", /*Disallow=*/true)
1039 .flag(Flag: "-m32")
1040 .flag(Flag: "-mabi=n32", /*Disallow=*/true);
1041
1042 DebianMipsMultilibs = MultilibSetBuilder()
1043 .Either(M1: M32, M2: M64, M3: MAbiN32)
1044 .makeMultilibSet()
1045 .FilterOut(F: NonExistent);
1046 }
1047
1048 // Sort candidates. Toolchain that best meets the directories tree goes first.
1049 // Then select the first toolchains matches command line flags.
1050 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs};
1051 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size())
1052 std::iter_swap(a: Candidates, b: Candidates + 1);
1053 for (const MultilibSet *Candidate : Candidates) {
1054 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1055 if (Candidate == &DebianMipsMultilibs)
1056 Result.BiarchSibling = Multilib();
1057 Result.Multilibs = *Candidate;
1058 return true;
1059 }
1060 }
1061 return false;
1062}
1063
1064static bool findMipsMuslMultilibs(const Driver &D,
1065 const Multilib::flags_list &Flags,
1066 FilterNonExistent &NonExistent,
1067 DetectedMultilibs &Result) {
1068 // Musl toolchain multilibs
1069 MultilibSet MuslMipsMultilibs;
1070 {
1071 auto MArchMipsR2 = MultilibBuilder("")
1072 .osSuffix(S: "/mips-r2-hard-musl")
1073 .flag(Flag: "-EB")
1074 .flag(Flag: "-EL", /*Disallow=*/true)
1075 .flag(Flag: "-march=mips32r2");
1076
1077 auto MArchMipselR2 = MultilibBuilder("/mipsel-r2-hard-musl")
1078 .flag(Flag: "-EB", /*Disallow=*/true)
1079 .flag(Flag: "-EL")
1080 .flag(Flag: "-march=mips32r2");
1081
1082 MuslMipsMultilibs = MultilibSetBuilder()
1083 .Either(M1: MArchMipsR2, M2: MArchMipselR2)
1084 .makeMultilibSet();
1085
1086 // Specify the callback that computes the include directories.
1087 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) {
1088 return std::vector<std::string>(
1089 {"/../sysroot" + M.osSuffix() + "/usr/include"});
1090 });
1091 }
1092 if (MuslMipsMultilibs.select(D, Flags, Result.SelectedMultilibs)) {
1093 Result.Multilibs = std::move(MuslMipsMultilibs);
1094 return true;
1095 }
1096 return false;
1097}
1098
1099static bool findMipsMtiMultilibs(const Driver &D,
1100 const Multilib::flags_list &Flags,
1101 FilterNonExistent &NonExistent,
1102 DetectedMultilibs &Result) {
1103 // CodeScape MTI toolchain v1.2 and early.
1104 MultilibSet MtiMipsMultilibsV1;
1105 {
1106 auto MArchMips32 = MultilibBuilder("/mips32")
1107 .flag(Flag: "-m32")
1108 .flag(Flag: "-m64", /*Disallow=*/true)
1109 .flag(Flag: "-mmicromips", /*Disallow=*/true)
1110 .flag(Flag: "-march=mips32");
1111
1112 auto MArchMicroMips = MultilibBuilder("/micromips")
1113 .flag(Flag: "-m32")
1114 .flag(Flag: "-m64", /*Disallow=*/true)
1115 .flag(Flag: "-mmicromips");
1116
1117 auto MArchMips64r2 = MultilibBuilder("/mips64r2")
1118 .flag(Flag: "-m32", /*Disallow=*/true)
1119 .flag(Flag: "-m64")
1120 .flag(Flag: "-march=mips64r2");
1121
1122 auto MArchMips64 = MultilibBuilder("/mips64")
1123 .flag(Flag: "-m32", /*Disallow=*/true)
1124 .flag(Flag: "-m64")
1125 .flag(Flag: "-march=mips64r2", /*Disallow=*/true);
1126
1127 auto MArchDefault = MultilibBuilder("")
1128 .flag(Flag: "-m32")
1129 .flag(Flag: "-m64", /*Disallow=*/true)
1130 .flag(Flag: "-mmicromips", /*Disallow=*/true)
1131 .flag(Flag: "-march=mips32r2");
1132
1133 auto Mips16 = MultilibBuilder("/mips16").flag(Flag: "-mips16");
1134
1135 auto UCLibc = MultilibBuilder("/uclibc").flag(Flag: "-muclibc");
1136
1137 auto MAbi64 = MultilibBuilder("/64")
1138 .flag(Flag: "-mabi=n64")
1139 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1140 .flag(Flag: "-m32", /*Disallow=*/true);
1141
1142 auto BigEndian =
1143 MultilibBuilder("").flag(Flag: "-EB").flag(Flag: "-EL", /*Disallow=*/true);
1144
1145 auto LittleEndian =
1146 MultilibBuilder("/el").flag(Flag: "-EL").flag(Flag: "-EB", /*Disallow=*/true);
1147
1148 auto SoftFloat = MultilibBuilder("/sof").flag(Flag: "-msoft-float");
1149
1150 auto Nan2008 = MultilibBuilder("/nan2008").flag(Flag: "-mnan=2008");
1151
1152 MtiMipsMultilibsV1 =
1153 MultilibSetBuilder()
1154 .Either(M1: MArchMips32, M2: MArchMicroMips, M3: MArchMips64r2, M4: MArchMips64,
1155 M5: MArchDefault)
1156 .Maybe(M: UCLibc)
1157 .Maybe(M: Mips16)
1158 .FilterOut(Regex: "/mips64/mips16")
1159 .FilterOut(Regex: "/mips64r2/mips16")
1160 .FilterOut(Regex: "/micromips/mips16")
1161 .Maybe(M: MAbi64)
1162 .FilterOut(Regex: "/micromips/64")
1163 .FilterOut(Regex: "/mips32/64")
1164 .FilterOut(Regex: "^/64")
1165 .FilterOut(Regex: "/mips16/64")
1166 .Either(M1: BigEndian, M2: LittleEndian)
1167 .Maybe(M: SoftFloat)
1168 .Maybe(M: Nan2008)
1169 .FilterOut(Regex: ".*sof/nan2008")
1170 .makeMultilibSet()
1171 .FilterOut(F: NonExistent)
1172 .setIncludeDirsCallback([](const Multilib &M) {
1173 std::vector<std::string> Dirs({"/include"});
1174 if (StringRef(M.includeSuffix()).starts_with(Prefix: "/uclibc"))
1175 Dirs.push_back(x: "/../../../../sysroot/uclibc/usr/include");
1176 else
1177 Dirs.push_back(x: "/../../../../sysroot/usr/include");
1178 return Dirs;
1179 });
1180 }
1181
1182 // CodeScape IMG toolchain starting from v1.3.
1183 MultilibSet MtiMipsMultilibsV2;
1184 {
1185 auto BeHard = MultilibBuilder("/mips-r2-hard")
1186 .flag(Flag: "-EB")
1187 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1188 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1189 .flag(Flag: "-muclibc", /*Disallow=*/true);
1190 auto BeSoft = MultilibBuilder("/mips-r2-soft")
1191 .flag(Flag: "-EB")
1192 .flag(Flag: "-msoft-float")
1193 .flag(Flag: "-mnan=2008", /*Disallow=*/true);
1194 auto ElHard = MultilibBuilder("/mipsel-r2-hard")
1195 .flag(Flag: "-EL")
1196 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1197 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1198 .flag(Flag: "-muclibc", /*Disallow=*/true);
1199 auto ElSoft = MultilibBuilder("/mipsel-r2-soft")
1200 .flag(Flag: "-EL")
1201 .flag(Flag: "-msoft-float")
1202 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1203 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1204 auto BeHardNan = MultilibBuilder("/mips-r2-hard-nan2008")
1205 .flag(Flag: "-EB")
1206 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1207 .flag(Flag: "-mnan=2008")
1208 .flag(Flag: "-muclibc", /*Disallow=*/true);
1209 auto ElHardNan = MultilibBuilder("/mipsel-r2-hard-nan2008")
1210 .flag(Flag: "-EL")
1211 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1212 .flag(Flag: "-mnan=2008")
1213 .flag(Flag: "-muclibc", /*Disallow=*/true)
1214 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1215 auto BeHardNanUclibc = MultilibBuilder("/mips-r2-hard-nan2008-uclibc")
1216 .flag(Flag: "-EB")
1217 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1218 .flag(Flag: "-mnan=2008")
1219 .flag(Flag: "-muclibc");
1220 auto ElHardNanUclibc = MultilibBuilder("/mipsel-r2-hard-nan2008-uclibc")
1221 .flag(Flag: "-EL")
1222 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1223 .flag(Flag: "-mnan=2008")
1224 .flag(Flag: "-muclibc");
1225 auto BeHardUclibc = MultilibBuilder("/mips-r2-hard-uclibc")
1226 .flag(Flag: "-EB")
1227 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1228 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1229 .flag(Flag: "-muclibc");
1230 auto ElHardUclibc = MultilibBuilder("/mipsel-r2-hard-uclibc")
1231 .flag(Flag: "-EL")
1232 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1233 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1234 .flag(Flag: "-muclibc");
1235 auto ElMicroHardNan = MultilibBuilder("/micromipsel-r2-hard-nan2008")
1236 .flag(Flag: "-EL")
1237 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1238 .flag(Flag: "-mnan=2008")
1239 .flag(Flag: "-mmicromips");
1240 auto ElMicroSoft = MultilibBuilder("/micromipsel-r2-soft")
1241 .flag(Flag: "-EL")
1242 .flag(Flag: "-msoft-float")
1243 .flag(Flag: "-mnan=2008", /*Disallow=*/true)
1244 .flag(Flag: "-mmicromips");
1245
1246 auto O32 = MultilibBuilder("/lib")
1247 .osSuffix(S: "")
1248 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1249 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1250 auto N32 = MultilibBuilder("/lib32")
1251 .osSuffix(S: "")
1252 .flag(Flag: "-mabi=n32")
1253 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1254 auto N64 = MultilibBuilder("/lib64")
1255 .osSuffix(S: "")
1256 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1257 .flag(Flag: "-mabi=n64");
1258
1259 MtiMipsMultilibsV2 =
1260 MultilibSetBuilder()
1261 .Either(Ms: {BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan,
1262 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc,
1263 ElHardUclibc, ElMicroHardNan, ElMicroSoft})
1264 .Either(M1: O32, M2: N32, M3: N64)
1265 .makeMultilibSet()
1266 .FilterOut(F: NonExistent)
1267 .setIncludeDirsCallback([](const Multilib &M) {
1268 return std::vector<std::string>({"/../../../../sysroot" +
1269 M.includeSuffix() +
1270 "/../usr/include"});
1271 })
1272 .setFilePathsCallback([](const Multilib &M) {
1273 return std::vector<std::string>(
1274 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()});
1275 });
1276 }
1277 for (auto *Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) {
1278 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1279 Result.Multilibs = *Candidate;
1280 return true;
1281 }
1282 }
1283 return false;
1284}
1285
1286static bool findMipsImgMultilibs(const Driver &D,
1287 const Multilib::flags_list &Flags,
1288 FilterNonExistent &NonExistent,
1289 DetectedMultilibs &Result) {
1290 // CodeScape IMG toolchain v1.2 and early.
1291 MultilibSet ImgMultilibsV1;
1292 {
1293 auto Mips64r6 = MultilibBuilder("/mips64r6")
1294 .flag(Flag: "-m64")
1295 .flag(Flag: "-m32", /*Disallow=*/true);
1296
1297 auto LittleEndian =
1298 MultilibBuilder("/el").flag(Flag: "-EL").flag(Flag: "-EB", /*Disallow=*/true);
1299
1300 auto MAbi64 = MultilibBuilder("/64")
1301 .flag(Flag: "-mabi=n64")
1302 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1303 .flag(Flag: "-m32", /*Disallow=*/true);
1304
1305 ImgMultilibsV1 =
1306 MultilibSetBuilder()
1307 .Maybe(M: Mips64r6)
1308 .Maybe(M: MAbi64)
1309 .Maybe(M: LittleEndian)
1310 .makeMultilibSet()
1311 .FilterOut(F: NonExistent)
1312 .setIncludeDirsCallback([](const Multilib &M) {
1313 return std::vector<std::string>(
1314 {"/include", "/../../../../sysroot/usr/include"});
1315 });
1316 }
1317
1318 // CodeScape IMG toolchain starting from v1.3.
1319 MultilibSet ImgMultilibsV2;
1320 {
1321 auto BeHard = MultilibBuilder("/mips-r6-hard")
1322 .flag(Flag: "-EB")
1323 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1324 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1325 auto BeSoft = MultilibBuilder("/mips-r6-soft")
1326 .flag(Flag: "-EB")
1327 .flag(Flag: "-msoft-float")
1328 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1329 auto ElHard = MultilibBuilder("/mipsel-r6-hard")
1330 .flag(Flag: "-EL")
1331 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1332 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1333 auto ElSoft = MultilibBuilder("/mipsel-r6-soft")
1334 .flag(Flag: "-EL")
1335 .flag(Flag: "-msoft-float")
1336 .flag(Flag: "-mmicromips", /*Disallow=*/true);
1337 auto BeMicroHard = MultilibBuilder("/micromips-r6-hard")
1338 .flag(Flag: "-EB")
1339 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1340 .flag(Flag: "-mmicromips");
1341 auto BeMicroSoft = MultilibBuilder("/micromips-r6-soft")
1342 .flag(Flag: "-EB")
1343 .flag(Flag: "-msoft-float")
1344 .flag(Flag: "-mmicromips");
1345 auto ElMicroHard = MultilibBuilder("/micromipsel-r6-hard")
1346 .flag(Flag: "-EL")
1347 .flag(Flag: "-msoft-float", /*Disallow=*/true)
1348 .flag(Flag: "-mmicromips");
1349 auto ElMicroSoft = MultilibBuilder("/micromipsel-r6-soft")
1350 .flag(Flag: "-EL")
1351 .flag(Flag: "-msoft-float")
1352 .flag(Flag: "-mmicromips");
1353
1354 auto O32 = MultilibBuilder("/lib")
1355 .osSuffix(S: "")
1356 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1357 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1358 auto N32 = MultilibBuilder("/lib32")
1359 .osSuffix(S: "")
1360 .flag(Flag: "-mabi=n32")
1361 .flag(Flag: "-mabi=n64", /*Disallow=*/true);
1362 auto N64 = MultilibBuilder("/lib64")
1363 .osSuffix(S: "")
1364 .flag(Flag: "-mabi=n32", /*Disallow=*/true)
1365 .flag(Flag: "-mabi=n64");
1366
1367 ImgMultilibsV2 =
1368 MultilibSetBuilder()
1369 .Either(Ms: {BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft,
1370 ElMicroHard, ElMicroSoft})
1371 .Either(M1: O32, M2: N32, M3: N64)
1372 .makeMultilibSet()
1373 .FilterOut(F: NonExistent)
1374 .setIncludeDirsCallback([](const Multilib &M) {
1375 return std::vector<std::string>({"/../../../../sysroot" +
1376 M.includeSuffix() +
1377 "/../usr/include"});
1378 })
1379 .setFilePathsCallback([](const Multilib &M) {
1380 return std::vector<std::string>(
1381 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()});
1382 });
1383 }
1384 for (auto *Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) {
1385 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) {
1386 Result.Multilibs = *Candidate;
1387 return true;
1388 }
1389 }
1390 return false;
1391}
1392
1393bool clang::driver::findMIPSMultilibs(const Driver &D,
1394 const llvm::Triple &TargetTriple,
1395 StringRef Path, const ArgList &Args,
1396 DetectedMultilibs &Result) {
1397 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1398
1399 StringRef CPUName;
1400 StringRef ABIName;
1401 tools::mips::getMipsCPUAndABI(Args, Triple: TargetTriple, CPUName, ABIName);
1402
1403 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
1404
1405 Multilib::flags_list Flags;
1406 addMultilibFlag(Enabled: TargetTriple.isMIPS32(), Flag: "-m32", Flags);
1407 addMultilibFlag(Enabled: TargetTriple.isMIPS64(), Flag: "-m64", Flags);
1408 addMultilibFlag(Enabled: isMips16(Args), Flag: "-mips16", Flags);
1409 addMultilibFlag(Enabled: CPUName == "mips32", Flag: "-march=mips32", Flags);
1410 addMultilibFlag(Enabled: CPUName == "mips32r2" || CPUName == "mips32r3" ||
1411 CPUName == "mips32r5" || CPUName == "p5600",
1412 Flag: "-march=mips32r2", Flags);
1413 addMultilibFlag(Enabled: CPUName == "mips32r6", Flag: "-march=mips32r6", Flags);
1414 addMultilibFlag(Enabled: CPUName == "mips64", Flag: "-march=mips64", Flags);
1415 addMultilibFlag(Enabled: CPUName == "mips64r2" || CPUName == "mips64r3" ||
1416 CPUName == "mips64r5" || CPUName == "octeon" ||
1417 CPUName == "octeon+",
1418 Flag: "-march=mips64r2", Flags);
1419 addMultilibFlag(Enabled: CPUName == "mips64r6" || CPUName == "i6400" ||
1420 CPUName == "i6500",
1421 Flag: "-march=mips64r6", Flags);
1422 addMultilibFlag(Enabled: isMicroMips(Args), Flag: "-mmicromips", Flags);
1423 addMultilibFlag(Enabled: tools::mips::isUCLibc(Args), Flag: "-muclibc", Flags);
1424 addMultilibFlag(Enabled: tools::mips::isNaN2008(D, Args, Triple: TargetTriple), Flag: "-mnan=2008",
1425 Flags);
1426 addMultilibFlag(Enabled: ABIName == "n32", Flag: "-mabi=n32", Flags);
1427 addMultilibFlag(Enabled: ABIName == "n64", Flag: "-mabi=n64", Flags);
1428 addMultilibFlag(Enabled: isSoftFloatABI(Args), Flag: "-msoft-float", Flags);
1429 addMultilibFlag(Enabled: !isSoftFloatABI(Args), Flag: "-mhard-float", Flags);
1430 addMultilibFlag(Enabled: isMipsEL(Arch: TargetArch), Flag: "-EL", Flags);
1431 addMultilibFlag(Enabled: !isMipsEL(Arch: TargetArch), Flag: "-EB", Flags);
1432
1433 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1434 TargetTriple.getOS() == llvm::Triple::Linux &&
1435 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment)
1436 return findMipsMuslMultilibs(D, Flags, NonExistent, Result);
1437
1438 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies &&
1439 TargetTriple.getOS() == llvm::Triple::Linux &&
1440 TargetTriple.isGNUEnvironment())
1441 return findMipsMtiMultilibs(D, Flags, NonExistent, Result);
1442
1443 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies &&
1444 TargetTriple.getOS() == llvm::Triple::Linux &&
1445 TargetTriple.isGNUEnvironment())
1446 return findMipsImgMultilibs(D, Flags, NonExistent, Result);
1447
1448 if (findMipsCsMultilibs(D, Flags, NonExistent, Result))
1449 return true;
1450
1451 // Fallback to the regular toolchain-tree structure.
1452 Multilib Default;
1453 Result.Multilibs.push_back(M: Default);
1454 Result.Multilibs.FilterOut(F: NonExistent);
1455
1456 if (Result.Multilibs.select(D, Flags, Result.SelectedMultilibs)) {
1457 Result.BiarchSibling = Multilib();
1458 return true;
1459 }
1460
1461 return false;
1462}
1463
1464static void findAndroidArmMultilibs(const Driver &D,
1465 const llvm::Triple &TargetTriple,
1466 StringRef Path, const ArgList &Args,
1467 DetectedMultilibs &Result) {
1468 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb.
1469 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1470 MultilibBuilder ArmV7Multilib = MultilibBuilder("/armv7-a")
1471 .flag(Flag: "-march=armv7-a")
1472 .flag(Flag: "-mthumb", /*Disallow=*/true);
1473 MultilibBuilder ThumbMultilib = MultilibBuilder("/thumb")
1474 .flag(Flag: "-march=armv7-a", /*Disallow=*/true)
1475 .flag(Flag: "-mthumb");
1476 MultilibBuilder ArmV7ThumbMultilib =
1477 MultilibBuilder("/armv7-a/thumb").flag(Flag: "-march=armv7-a").flag(Flag: "-mthumb");
1478 MultilibBuilder DefaultMultilib =
1479 MultilibBuilder("")
1480 .flag(Flag: "-march=armv7-a", /*Disallow=*/true)
1481 .flag(Flag: "-mthumb", /*Disallow=*/true);
1482 MultilibSet AndroidArmMultilibs =
1483 MultilibSetBuilder()
1484 .Either(M1: ThumbMultilib, M2: ArmV7Multilib, M3: ArmV7ThumbMultilib,
1485 M4: DefaultMultilib)
1486 .makeMultilibSet()
1487 .FilterOut(F: NonExistent);
1488
1489 Multilib::flags_list Flags;
1490 llvm::StringRef Arch = Args.getLastArgValue(Id: options::OPT_march_EQ);
1491 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm;
1492 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb;
1493 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7;
1494 bool IsThumbMode = IsThumbArch ||
1495 Args.hasFlag(Pos: options::OPT_mthumb, Neg: options::OPT_mno_thumb, Default: false) ||
1496 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB);
1497 bool IsArmV7Mode = (IsArmArch || IsThumbArch) &&
1498 (llvm::ARM::parseArchVersion(Arch) == 7 ||
1499 (IsArmArch && Arch == "" && IsV7SubArch));
1500 addMultilibFlag(Enabled: IsArmV7Mode, Flag: "-march=armv7-a", Flags);
1501 addMultilibFlag(Enabled: IsThumbMode, Flag: "-mthumb", Flags);
1502
1503 if (AndroidArmMultilibs.select(D, Flags, Result.SelectedMultilibs))
1504 Result.Multilibs = std::move(AndroidArmMultilibs);
1505}
1506
1507static bool findMSP430Multilibs(const Driver &D,
1508 const llvm::Triple &TargetTriple,
1509 StringRef Path, const ArgList &Args,
1510 DetectedMultilibs &Result) {
1511 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1512 MultilibBuilder WithoutExceptions =
1513 MultilibBuilder("/430").flag(Flag: "-exceptions", /*Disallow=*/true);
1514 MultilibBuilder WithExceptions =
1515 MultilibBuilder("/430/exceptions").flag(Flag: "-exceptions");
1516
1517 // FIXME: when clang starts to support msp430x ISA additional logic
1518 // to select between multilib must be implemented
1519 // MultilibBuilder MSP430xMultilib = MultilibBuilder("/large");
1520
1521 Result.Multilibs.push_back(M: WithoutExceptions.makeMultilib());
1522 Result.Multilibs.push_back(M: WithExceptions.makeMultilib());
1523 Result.Multilibs.FilterOut(F: NonExistent);
1524
1525 Multilib::flags_list Flags;
1526 addMultilibFlag(Enabled: Args.hasFlag(Pos: options::OPT_fexceptions,
1527 Neg: options::OPT_fno_exceptions, Default: false),
1528 Flag: "-exceptions", Flags);
1529 if (Result.Multilibs.select(D, Flags, Result.SelectedMultilibs))
1530 return true;
1531
1532 return false;
1533}
1534
1535static void findCSKYMultilibs(const Driver &D, const llvm::Triple &TargetTriple,
1536 StringRef Path, const ArgList &Args,
1537 DetectedMultilibs &Result) {
1538 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1539
1540 tools::csky::FloatABI TheFloatABI = tools::csky::getCSKYFloatABI(D, Args);
1541 std::optional<llvm::StringRef> Res =
1542 tools::csky::getCSKYArchName(D, Args, Triple: TargetTriple);
1543
1544 if (!Res)
1545 return;
1546 auto ARCHName = *Res;
1547
1548 Multilib::flags_list Flags;
1549 addMultilibFlag(Enabled: TheFloatABI == tools::csky::FloatABI::Hard, Flag: "-hard-fp",
1550 Flags);
1551 addMultilibFlag(Enabled: TheFloatABI == tools::csky::FloatABI::SoftFP, Flag: "-soft-fp",
1552 Flags);
1553 addMultilibFlag(Enabled: TheFloatABI == tools::csky::FloatABI::Soft, Flag: "-soft", Flags);
1554 addMultilibFlag(Enabled: ARCHName == "ck801", Flag: "-march=ck801", Flags);
1555 addMultilibFlag(Enabled: ARCHName == "ck802", Flag: "-march=ck802", Flags);
1556 addMultilibFlag(Enabled: ARCHName == "ck803", Flag: "-march=ck803", Flags);
1557 addMultilibFlag(Enabled: ARCHName == "ck804", Flag: "-march=ck804", Flags);
1558 addMultilibFlag(Enabled: ARCHName == "ck805", Flag: "-march=ck805", Flags);
1559 addMultilibFlag(Enabled: ARCHName == "ck807", Flag: "-march=ck807", Flags);
1560 addMultilibFlag(Enabled: ARCHName == "ck810", Flag: "-march=ck810", Flags);
1561 addMultilibFlag(Enabled: ARCHName == "ck810v", Flag: "-march=ck810v", Flags);
1562 addMultilibFlag(Enabled: ARCHName == "ck860", Flag: "-march=ck860", Flags);
1563 addMultilibFlag(Enabled: ARCHName == "ck860v", Flag: "-march=ck860v", Flags);
1564
1565 bool isBigEndian = false;
1566 if (Arg *A = Args.getLastArg(Ids: options::OPT_mlittle_endian,
1567 Ids: options::OPT_mbig_endian))
1568 isBigEndian = !A->getOption().matches(ID: options::OPT_mlittle_endian);
1569 addMultilibFlag(Enabled: isBigEndian, Flag: "-EB", Flags);
1570
1571 auto HardFloat = MultilibBuilder("/hard-fp").flag(Flag: "-hard-fp");
1572 auto SoftFpFloat = MultilibBuilder("/soft-fp").flag(Flag: "-soft-fp");
1573 auto SoftFloat = MultilibBuilder("").flag(Flag: "-soft");
1574 auto Arch801 = MultilibBuilder("/ck801").flag(Flag: "-march=ck801");
1575 auto Arch802 = MultilibBuilder("/ck802").flag(Flag: "-march=ck802");
1576 auto Arch803 = MultilibBuilder("/ck803").flag(Flag: "-march=ck803");
1577 // CK804 use the same library as CK803
1578 auto Arch804 = MultilibBuilder("/ck803").flag(Flag: "-march=ck804");
1579 auto Arch805 = MultilibBuilder("/ck805").flag(Flag: "-march=ck805");
1580 auto Arch807 = MultilibBuilder("/ck807").flag(Flag: "-march=ck807");
1581 auto Arch810 = MultilibBuilder("").flag(Flag: "-march=ck810");
1582 auto Arch810v = MultilibBuilder("/ck810v").flag(Flag: "-march=ck810v");
1583 auto Arch860 = MultilibBuilder("/ck860").flag(Flag: "-march=ck860");
1584 auto Arch860v = MultilibBuilder("/ck860v").flag(Flag: "-march=ck860v");
1585 auto BigEndian = MultilibBuilder("/big").flag(Flag: "-EB");
1586
1587 MultilibSet CSKYMultilibs =
1588 MultilibSetBuilder()
1589 .Maybe(M: BigEndian)
1590 .Either(Ms: {Arch801, Arch802, Arch803, Arch804, Arch805, Arch807,
1591 Arch810, Arch810v, Arch860, Arch860v})
1592 .Either(M1: HardFloat, M2: SoftFpFloat, M3: SoftFloat)
1593 .makeMultilibSet()
1594 .FilterOut(F: NonExistent);
1595
1596 if (CSKYMultilibs.select(D, Flags, Result.SelectedMultilibs))
1597 Result.Multilibs = std::move(CSKYMultilibs);
1598}
1599
1600/// Extend the multi-lib re-use selection mechanism for RISC-V.
1601/// This function will try to re-use multi-lib if they are compatible.
1602/// Definition of compatible:
1603/// - ABI must be the same.
1604/// - multi-lib is a subset of current arch, e.g. multi-lib=march=rv32im
1605/// is a subset of march=rv32imc.
1606/// - march that contains atomic extension can't reuse multi-lib that
1607/// doesn't have atomic, vice versa. e.g. multi-lib=march=rv32im and
1608/// march=rv32ima are not compatible, because software and hardware
1609/// atomic operation can't work together correctly.
1610static bool
1611selectRISCVMultilib(const Driver &D, const MultilibSet &RISCVMultilibSet,
1612 const Multilib::flags_list &Flags,
1613 llvm::SmallVectorImpl<Multilib> &SelectedMultilibs) {
1614 // Try to find the perfect matching multi-lib first.
1615 if (RISCVMultilibSet.select(D, Flags, SelectedMultilibs))
1616 return true;
1617
1618 Multilib::flags_list NewFlags;
1619 std::vector<MultilibBuilder> NewMultilibs;
1620
1621 // Collect all flags and extract Arch from march
1622 StringRef Arch;
1623 for (StringRef Flag : Flags) {
1624 if (Flag.consume_front(Prefix: "-march=")) {
1625 Arch = Flag;
1626 continue;
1627 }
1628
1629 NewFlags.push_back(x: Flag.str());
1630 }
1631
1632 llvm::Expected<std::unique_ptr<llvm::RISCVISAInfo>> ParseResult =
1633 llvm::RISCVISAInfo::parseArchString(
1634 Arch, /*EnableExperimentalExtension=*/true,
1635 /*ExperimentalExtensionVersionCheck=*/false);
1636 // Ignore any error here, we assume it will be handled in another place.
1637 if (llvm::errorToBool(Err: ParseResult.takeError()))
1638 return false;
1639
1640 auto &ISAInfo = *ParseResult;
1641
1642 addMultilibFlag(Enabled: ISAInfo->getXLen() == 32, Flag: "-m32", Flags&: NewFlags);
1643 addMultilibFlag(Enabled: ISAInfo->getXLen() == 64, Flag: "-m64", Flags&: NewFlags);
1644
1645 llvm::StringSet<> AllArchExts;
1646 // Reconstruct multi-lib list, and break march option into separated
1647 // extension. e.g. march=rv32im -> +i +m
1648 for (const auto &M : RISCVMultilibSet) {
1649 bool Skip = false;
1650
1651 MultilibBuilder NewMultilib =
1652 MultilibBuilder(M.gccSuffix(), M.osSuffix(), M.includeSuffix());
1653 for (StringRef Flag : M.flags()) {
1654 // Add back all flags except -march.
1655 if (!Flag.consume_front(Prefix: "-march=")) {
1656 NewMultilib.flag(Flag);
1657 continue;
1658 }
1659
1660 // Break down -march into individual extension.
1661 llvm::Expected<std::unique_ptr<llvm::RISCVISAInfo>> MLConfigParseResult =
1662 llvm::RISCVISAInfo::parseArchString(
1663 Arch: Flag, /*EnableExperimentalExtension=*/true,
1664 /*ExperimentalExtensionVersionCheck=*/false);
1665 // Ignore any error here, we assume it will handled in another place.
1666 if (llvm::errorToBool(Err: MLConfigParseResult.takeError())) {
1667 // We might get a parsing error if rv32e in the list, we could just skip
1668 // that and process the rest of multi-lib configs.
1669 Skip = true;
1670 continue;
1671 }
1672 auto &MLConfigISAInfo = *MLConfigParseResult;
1673
1674 for (auto &MLConfigArchExt : MLConfigISAInfo->getExtensions()) {
1675 auto ExtName = MLConfigArchExt.first;
1676 NewMultilib.flag(Flag: Twine("-", ExtName).str());
1677
1678 if (AllArchExts.insert(key: ExtName).second) {
1679 addMultilibFlag(Enabled: ISAInfo->hasExtension(Ext: ExtName),
1680 Flag: Twine("-", ExtName).str(), Flags&: NewFlags);
1681 }
1682 }
1683
1684 // Check the XLEN explicitly.
1685 if (MLConfigISAInfo->getXLen() == 32) {
1686 NewMultilib.flag(Flag: "-m32");
1687 NewMultilib.flag(Flag: "-m64", /*Disallow*/ true);
1688 } else {
1689 NewMultilib.flag(Flag: "-m32", /*Disallow*/ true);
1690 NewMultilib.flag(Flag: "-m64");
1691 }
1692
1693 // Atomic extension must be explicitly checked, soft and hard atomic
1694 // operation never co-work correctly.
1695 if (!MLConfigISAInfo->hasExtension(Ext: "a"))
1696 NewMultilib.flag(Flag: "-a", /*Disallow*/ true);
1697 }
1698
1699 if (Skip)
1700 continue;
1701
1702 NewMultilibs.emplace_back(args&: NewMultilib);
1703 }
1704
1705 // Build an internal used only multi-lib list, used for checking any
1706 // compatible multi-lib.
1707 MultilibSet NewRISCVMultilibs =
1708 MultilibSetBuilder().Either(Ms: NewMultilibs).makeMultilibSet();
1709
1710 if (NewRISCVMultilibs.select(D, Flags: NewFlags, SelectedMultilibs))
1711 for (const Multilib &NewSelectedM : SelectedMultilibs)
1712 for (const auto &M : RISCVMultilibSet)
1713 // Look up the corresponding multi-lib entry in original multi-lib set.
1714 if (M.gccSuffix() == NewSelectedM.gccSuffix())
1715 return true;
1716
1717 return false;
1718}
1719
1720static void findRISCVBareMetalMultilibs(const Driver &D,
1721 const llvm::Triple &TargetTriple,
1722 StringRef Path, const ArgList &Args,
1723 DetectedMultilibs &Result) {
1724 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1725 struct RiscvMultilib {
1726 StringRef march;
1727 StringRef mabi;
1728 };
1729 // currently only support the set of multilibs like riscv-gnu-toolchain does.
1730 // TODO: support MULTILIB_REUSE
1731 constexpr RiscvMultilib RISCVMultilibSet[] = {
1732 {.march: "rv32i", .mabi: "ilp32"}, {.march: "rv32im", .mabi: "ilp32"}, {.march: "rv32iac", .mabi: "ilp32"},
1733 {.march: "rv32imac", .mabi: "ilp32"}, {.march: "rv32imafc", .mabi: "ilp32f"}, {.march: "rv64imac", .mabi: "lp64"},
1734 {.march: "rv64imafdc", .mabi: "lp64d"}};
1735
1736 std::vector<MultilibBuilder> Ms;
1737 for (auto Element : RISCVMultilibSet) {
1738 // multilib path rule is ${march}/${mabi}
1739 Ms.emplace_back(
1740 args&: MultilibBuilder(
1741 (Twine(Element.march) + "/" + Twine(Element.mabi)).str())
1742 .flag(Flag: Twine("-march=", Element.march).str())
1743 .flag(Flag: Twine("-mabi=", Element.mabi).str()));
1744 }
1745
1746 StringRef EndiannessSuffix = TargetTriple.isLittleEndian() ? "" : "be";
1747 MultilibSet RISCVMultilibs =
1748 MultilibSetBuilder()
1749 .Either(Ms)
1750 .makeMultilibSet()
1751 .FilterOut(F: NonExistent)
1752 .setFilePathsCallback([EndiannessSuffix](const Multilib &M) {
1753 return std::vector<std::string>(
1754 {M.gccSuffix(),
1755 "/../../../../riscv64" + EndiannessSuffix.str() +
1756 "-unknown-elf/lib" + M.gccSuffix(),
1757 "/../../../../riscv32" + EndiannessSuffix.str() +
1758 "-unknown-elf/lib" + M.gccSuffix()});
1759 });
1760
1761 Multilib::flags_list Flags;
1762 StringRef ABIName = tools::riscv::getRISCVABI(Args, Triple: TargetTriple);
1763 std::string MArch = tools::riscv::getRISCVArch(Args, Triple: TargetTriple);
1764 Flags.push_back(x: "-march=" + MArch);
1765 Flags.push_back(x: "-mabi=" + ABIName.str());
1766
1767 if (selectRISCVMultilib(D, RISCVMultilibSet: RISCVMultilibs, Flags, SelectedMultilibs&: Result.SelectedMultilibs))
1768 Result.Multilibs = std::move(RISCVMultilibs);
1769}
1770
1771static void findRISCVMultilibs(const Driver &D,
1772 const llvm::Triple &TargetTriple, StringRef Path,
1773 const ArgList &Args, DetectedMultilibs &Result) {
1774 if (TargetTriple.getOS() == llvm::Triple::UnknownOS)
1775 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result);
1776
1777 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS());
1778 MultilibBuilder Ilp32 =
1779 MultilibBuilder("lib32/ilp32").flag(Flag: "-m32").flag(Flag: "-mabi=ilp32");
1780 MultilibBuilder Ilp32f =
1781 MultilibBuilder("lib32/ilp32f").flag(Flag: "-m32").flag(Flag: "-mabi=ilp32f");
1782 MultilibBuilder Ilp32d =
1783 MultilibBuilder("lib32/ilp32d").flag(Flag: "-m32").flag(Flag: "-mabi=ilp32d");
1784 MultilibBuilder Lp64 =
1785 MultilibBuilder("lib64/lp64").flag(Flag: "-m64").flag(Flag: "-mabi=lp64");
1786 MultilibBuilder Lp64f =
1787 MultilibBuilder("lib64/lp64f").flag(Flag: "-m64").flag(Flag: "-mabi=lp64f");
1788 MultilibBuilder Lp64d =
1789 MultilibBuilder("lib64/lp64d").flag(Flag: "-m64").flag(Flag: "-mabi=lp64d");
1790 MultilibSet RISCVMultilibs =
1791 MultilibSetBuilder()
1792 .Either(Ms: {Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d})
1793 .makeMultilibSet()
1794 .FilterOut(F: NonExistent);
1795
1796 Multilib::flags_list Flags;
1797 bool IsRV64 = TargetTriple.isRISCV64();
1798 StringRef ABIName = tools::riscv::getRISCVABI(Args, Triple: TargetTriple);
1799
1800 addMultilibFlag(Enabled: !IsRV64, Flag: "-m32", Flags);
1801 addMultilibFlag(Enabled: IsRV64, Flag: "-m64", Flags);
1802 addMultilibFlag(Enabled: ABIName == "ilp32", Flag: "-mabi=ilp32", Flags);
1803 addMultilibFlag(Enabled: ABIName == "ilp32f", Flag: "-mabi=ilp32f", Flags);
1804 addMultilibFlag(Enabled: ABIName == "ilp32d", Flag: "-mabi=ilp32d", Flags);
1805 addMultilibFlag(Enabled: ABIName == "lp64", Flag: "-mabi=lp64", Flags);
1806 addMultilibFlag(Enabled: ABIName == "lp64f", Flag: "-mabi=lp64f", Flags);
1807 addMultilibFlag(Enabled: ABIName == "lp64d", Flag: "-mabi=lp64d", Flags);
1808
1809 if (RISCVMultilibs.select(D, Flags, Result.SelectedMultilibs))
1810 Result.Multilibs = std::move(RISCVMultilibs);
1811}
1812
1813static bool findBiarchMultilibs(const Driver &D,
1814 const llvm::Triple &TargetTriple,
1815 StringRef Path, const ArgList &Args,
1816 bool NeedsBiarchSuffix,
1817 DetectedMultilibs &Result) {
1818 MultilibBuilder DefaultBuilder;
1819
1820 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs
1821 // in what would normally be GCCInstallPath and put the 64-bit
1822 // libs in a subdirectory named 64. The simple logic we follow is that
1823 // *if* there is a subdirectory of the right name with crtbegin.o in it,
1824 // we use that. If not, and if not a biarch triple alias, we look for
1825 // crtbegin.o without the subdirectory.
1826
1827 StringRef Suff64 = "/64";
1828 // Solaris uses platform-specific suffixes instead of /64.
1829 if (TargetTriple.isOSSolaris()) {
1830 switch (TargetTriple.getArch()) {
1831 case llvm::Triple::x86:
1832 case llvm::Triple::x86_64:
1833 Suff64 = "/amd64";
1834 break;
1835 case llvm::Triple::sparc:
1836 case llvm::Triple::sparcv9:
1837 Suff64 = "/sparcv9";
1838 break;
1839 default:
1840 break;
1841 }
1842 }
1843
1844 Multilib Alt64 = MultilibBuilder()
1845 .gccSuffix(S: Suff64)
1846 .includeSuffix(S: Suff64)
1847 .flag(Flag: "-m32", /*Disallow=*/true)
1848 .flag(Flag: "-m64")
1849 .flag(Flag: "-mx32", /*Disallow=*/true)
1850 .makeMultilib();
1851 Multilib Alt32 = MultilibBuilder()
1852 .gccSuffix(S: "/32")
1853 .includeSuffix(S: "/32")
1854 .flag(Flag: "-m32")
1855 .flag(Flag: "-m64", /*Disallow=*/true)
1856 .flag(Flag: "-mx32", /*Disallow=*/true)
1857 .makeMultilib();
1858 Multilib Altx32 = MultilibBuilder()
1859 .gccSuffix(S: "/x32")
1860 .includeSuffix(S: "/x32")
1861 .flag(Flag: "-m32", /*Disallow=*/true)
1862 .flag(Flag: "-m64", /*Disallow=*/true)
1863 .flag(Flag: "-mx32")
1864 .makeMultilib();
1865 Multilib Alt32sparc = MultilibBuilder()
1866 .gccSuffix(S: "/sparcv8plus")
1867 .includeSuffix(S: "/sparcv8plus")
1868 .flag(Flag: "-m32")
1869 .flag(Flag: "-m64", /*Disallow=*/true)
1870 .makeMultilib();
1871
1872 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a.
1873 FilterNonExistent NonExistent(
1874 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS());
1875
1876 // Determine default multilib from: 32, 64, x32
1877 // Also handle cases such as 64 on 32, 32 on 64, etc.
1878 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN;
1879 const bool IsX32 = TargetTriple.isX32();
1880 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32))
1881 Want = WANT64;
1882 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32sparc))
1883 Want = WANT64;
1884 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32))
1885 Want = WANT64;
1886 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64))
1887 Want = WANT32;
1888 else if (TargetTriple.isArch64Bit() && !NonExistent(Alt32sparc))
1889 Want = WANT64;
1890 else {
1891 if (TargetTriple.isArch32Bit())
1892 Want = NeedsBiarchSuffix ? WANT64 : WANT32;
1893 else if (IsX32)
1894 Want = NeedsBiarchSuffix ? WANT64 : WANTX32;
1895 else
1896 Want = NeedsBiarchSuffix ? WANT32 : WANT64;
1897 }
1898
1899 if (Want == WANT32)
1900 DefaultBuilder.flag(Flag: "-m32")
1901 .flag(Flag: "-m64", /*Disallow=*/true)
1902 .flag(Flag: "-mx32", /*Disallow=*/true);
1903 else if (Want == WANT64)
1904 DefaultBuilder.flag(Flag: "-m32", /*Disallow=*/true)
1905 .flag(Flag: "-m64")
1906 .flag(Flag: "-mx32", /*Disallow=*/true);
1907 else if (Want == WANTX32)
1908 DefaultBuilder.flag(Flag: "-m32", /*Disallow=*/true)
1909 .flag(Flag: "-m64", /*Disallow=*/true)
1910 .flag(Flag: "-mx32");
1911 else
1912 return false;
1913
1914 Multilib Default = DefaultBuilder.makeMultilib();
1915
1916 Result.Multilibs.push_back(M: Default);
1917 Result.Multilibs.push_back(M: Alt64);
1918 Result.Multilibs.push_back(M: Alt32);
1919 Result.Multilibs.push_back(M: Altx32);
1920 Result.Multilibs.push_back(M: Alt32sparc);
1921
1922 Result.Multilibs.FilterOut(F: NonExistent);
1923
1924 Multilib::flags_list Flags;
1925 addMultilibFlag(Enabled: TargetTriple.isArch64Bit() && !IsX32, Flag: "-m64", Flags);
1926 addMultilibFlag(Enabled: TargetTriple.isArch32Bit(), Flag: "-m32", Flags);
1927 addMultilibFlag(Enabled: TargetTriple.isArch64Bit() && IsX32, Flag: "-mx32", Flags);
1928
1929 if (!Result.Multilibs.select(D, Flags, Result.SelectedMultilibs))
1930 return false;
1931
1932 if (Result.SelectedMultilibs.back() == Alt64 ||
1933 Result.SelectedMultilibs.back() == Alt32 ||
1934 Result.SelectedMultilibs.back() == Altx32 ||
1935 Result.SelectedMultilibs.back() == Alt32sparc)
1936 Result.BiarchSibling = Default;
1937
1938 return true;
1939}
1940
1941/// Generic_GCC - A tool chain using the 'gcc' command to perform
1942/// all subcommands; this relies on gcc translating the majority of
1943/// command line options.
1944
1945/// Less-than for GCCVersion, implementing a Strict Weak Ordering.
1946bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor,
1947 int RHSPatch,
1948 StringRef RHSPatchSuffix) const {
1949 if (Major != RHSMajor)
1950 return Major < RHSMajor;
1951 if (Minor != RHSMinor) {
1952 // Note that versions without a specified minor sort higher than those with
1953 // a minor.
1954 if (RHSMinor == -1)
1955 return true;
1956 if (Minor == -1)
1957 return false;
1958 return Minor < RHSMinor;
1959 }
1960 if (Patch != RHSPatch) {
1961 // Note that versions without a specified patch sort higher than those with
1962 // a patch.
1963 if (RHSPatch == -1)
1964 return true;
1965 if (Patch == -1)
1966 return false;
1967
1968 // Otherwise just sort on the patch itself.
1969 return Patch < RHSPatch;
1970 }
1971 if (PatchSuffix != RHSPatchSuffix) {
1972 // Sort empty suffixes higher.
1973 if (RHSPatchSuffix.empty())
1974 return true;
1975 if (PatchSuffix.empty())
1976 return false;
1977
1978 // Provide a lexicographic sort to make this a total ordering.
1979 return PatchSuffix < RHSPatchSuffix;
1980 }
1981
1982 // The versions are equal.
1983 return false;
1984}
1985
1986/// Parse a GCCVersion object out of a string of text.
1987///
1988/// This is the primary means of forming GCCVersion objects.
1989/*static*/
1990Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) {
1991 const GCCVersion BadVersion = {.Text: VersionText.str(), .Major: -1, .Minor: -1, .Patch: -1, .MajorStr: "", .MinorStr: "", .PatchSuffix: ""};
1992 std::pair<StringRef, StringRef> First = VersionText.split(Separator: '.');
1993 std::pair<StringRef, StringRef> Second = First.second.split(Separator: '.');
1994
1995 StringRef MajorStr = First.first;
1996 StringRef MinorStr = Second.first;
1997 StringRef PatchStr = Second.second;
1998
1999 GCCVersion GoodVersion = {.Text: VersionText.str(), .Major: -1, .Minor: -1, .Patch: -1, .MajorStr: "", .MinorStr: "", .PatchSuffix: ""};
2000
2001 // Parse version number strings such as:
2002 // 5
2003 // 4.4
2004 // 4.4-patched
2005 // 4.4.0
2006 // 4.4.x
2007 // 4.4.2-rc4
2008 // 4.4.x-patched
2009 // 10-win32
2010 // Split on '.', handle 1, 2 or 3 such segments. Each segment must contain
2011 // purely a number, except for the last one, where a non-number suffix
2012 // is stored in PatchSuffix. The third segment is allowed to not contain
2013 // a number at all.
2014
2015 auto TryParseLastNumber = [&](StringRef Segment, int &Number,
2016 std::string &OutStr) -> bool {
2017 // Look for a number prefix and parse that, and split out any trailing
2018 // string into GoodVersion.PatchSuffix.
2019
2020 if (size_t EndNumber = Segment.find_first_not_of(Chars: "0123456789")) {
2021 StringRef NumberStr = Segment.slice(Start: 0, End: EndNumber);
2022 if (NumberStr.getAsInteger(Radix: 10, Result&: Number) || Number < 0)
2023 return false;
2024 OutStr = NumberStr;
2025 GoodVersion.PatchSuffix = Segment.substr(Start: EndNumber);
2026 return true;
2027 }
2028 return false;
2029 };
2030 auto TryParseNumber = [](StringRef Segment, int &Number) -> bool {
2031 if (Segment.getAsInteger(Radix: 10, Result&: Number) || Number < 0)
2032 return false;
2033 return true;
2034 };
2035
2036 if (MinorStr.empty()) {
2037 // If no minor string, major is the last segment
2038 if (!TryParseLastNumber(MajorStr, GoodVersion.Major, GoodVersion.MajorStr))
2039 return BadVersion;
2040 return GoodVersion;
2041 }
2042
2043 if (!TryParseNumber(MajorStr, GoodVersion.Major))
2044 return BadVersion;
2045 GoodVersion.MajorStr = MajorStr;
2046
2047 if (PatchStr.empty()) {
2048 // If no patch string, minor is the last segment
2049 if (!TryParseLastNumber(MinorStr, GoodVersion.Minor, GoodVersion.MinorStr))
2050 return BadVersion;
2051 return GoodVersion;
2052 }
2053
2054 if (!TryParseNumber(MinorStr, GoodVersion.Minor))
2055 return BadVersion;
2056 GoodVersion.MinorStr = MinorStr;
2057
2058 // For the last segment, tolerate a missing number.
2059 std::string DummyStr;
2060 TryParseLastNumber(PatchStr, GoodVersion.Patch, DummyStr);
2061 return GoodVersion;
2062}
2063
2064static llvm::StringRef getGCCToolchainDir(const ArgList &Args,
2065 llvm::StringRef SysRoot) {
2066 const Arg *A = Args.getLastArg(Ids: options::OPT_gcc_toolchain);
2067 if (A)
2068 return A->getValue();
2069
2070 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX.
2071 // GCC_INSTALL_PREFIX specifies the gcc installation for the default
2072 // sysroot and is likely not valid with a different sysroot.
2073 if (!SysRoot.empty())
2074 return "";
2075
2076 return GCC_INSTALL_PREFIX;
2077}
2078
2079/// Initialize a GCCInstallationDetector from the driver.
2080///
2081/// This performs all of the autodetection and sets up the various paths.
2082/// Once constructed, a GCCInstallationDetector is essentially immutable.
2083///
2084/// FIXME: We shouldn't need an explicit TargetTriple parameter here, and
2085/// should instead pull the target out of the driver. This is currently
2086/// necessary because the driver doesn't store the final version of the target
2087/// triple.
2088void Generic_GCC::GCCInstallationDetector::init(
2089 const llvm::Triple &TargetTriple, const ArgList &Args) {
2090 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit()
2091 ? TargetTriple.get64BitArchVariant()
2092 : TargetTriple.get32BitArchVariant();
2093 // The library directories which may contain GCC installations.
2094 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs;
2095 // The compatible GCC triples for this particular architecture.
2096 SmallVector<StringRef, 16> CandidateTripleAliases;
2097 SmallVector<StringRef, 16> CandidateBiarchTripleAliases;
2098 // Add some triples that we want to check first.
2099 CandidateTripleAliases.push_back(Elt: TargetTriple.str());
2100 std::string TripleNoVendor, BiarchTripleNoVendor;
2101 if (TargetTriple.getVendor() == llvm::Triple::UnknownVendor) {
2102 StringRef OSEnv = TargetTriple.getOSAndEnvironmentName();
2103 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32)
2104 OSEnv = "linux-gnu";
2105 TripleNoVendor = (TargetTriple.getArchName().str() + '-' + OSEnv).str();
2106 CandidateTripleAliases.push_back(Elt: TripleNoVendor);
2107 if (BiarchVariantTriple.getArch() != llvm::Triple::UnknownArch) {
2108 BiarchTripleNoVendor =
2109 (BiarchVariantTriple.getArchName().str() + '-' + OSEnv).str();
2110 CandidateBiarchTripleAliases.push_back(Elt: BiarchTripleNoVendor);
2111 }
2112 }
2113
2114 CollectLibDirsAndTriples(TargetTriple, BiarchTriple: BiarchVariantTriple, LibDirs&: CandidateLibDirs,
2115 TripleAliases&: CandidateTripleAliases, BiarchLibDirs&: CandidateBiarchLibDirs,
2116 BiarchTripleAliases&: CandidateBiarchTripleAliases);
2117
2118 // If --gcc-install-dir= is specified, skip filesystem detection.
2119 if (const Arg *A = Args.getLastArg(Ids: options::OPT_gcc_install_dir_EQ);
2120 A && A->getValue()[0]) {
2121 StringRef InstallDir = A->getValue();
2122 if (!ScanGCCForMultilibs(TargetTriple, Args, Path: InstallDir, NeedsBiarchSuffix: false)) {
2123 D.Diag(DiagID: diag::err_drv_invalid_gcc_install_dir) << InstallDir;
2124 } else {
2125 (void)InstallDir.consume_back(Suffix: "/");
2126 StringRef VersionText = llvm::sys::path::filename(path: InstallDir);
2127 StringRef TripleText =
2128 llvm::sys::path::filename(path: llvm::sys::path::parent_path(path: InstallDir));
2129
2130 SelectedInstallation.Version = GCCVersion::Parse(VersionText);
2131 SelectedInstallation.GCCTriple.setTriple(TripleText);
2132 SelectedInstallation.GCCInstallPath = std::string(InstallDir);
2133 SelectedInstallation.GCCParentLibPath =
2134 SelectedInstallation.GCCInstallPath + "/../../..";
2135 IsValid = true;
2136 }
2137 return;
2138 }
2139
2140 // If --gcc-triple is specified use this instead of trying to
2141 // auto-detect a triple.
2142 if (const Arg *A = Args.getLastArg(Ids: options::OPT_gcc_triple_EQ)) {
2143 StringRef GCCTriple = A->getValue();
2144 CandidateTripleAliases.clear();
2145 CandidateTripleAliases.push_back(Elt: GCCTriple);
2146 }
2147
2148 // Compute the set of prefixes for our search.
2149 SmallVector<std::string, 8> Prefixes;
2150 StringRef GCCToolchainDir = getGCCToolchainDir(Args, SysRoot: D.SysRoot);
2151 if (GCCToolchainDir != "") {
2152 if (GCCToolchainDir.back() == '/')
2153 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the /
2154
2155 Prefixes.push_back(Elt: std::string(GCCToolchainDir));
2156 } else {
2157 // If we have a SysRoot, try that first.
2158 if (!D.SysRoot.empty()) {
2159 Prefixes.push_back(Elt: D.SysRoot);
2160 AddDefaultGCCPrefixes(TargetTriple, Prefixes, SysRoot: D.SysRoot);
2161 }
2162
2163 // Then look for gcc installed alongside clang.
2164 Prefixes.push_back(Elt: D.Dir + "/..");
2165
2166 // Next, look for prefix(es) that correspond to distribution-supplied gcc
2167 // installations.
2168 if (D.SysRoot.empty()) {
2169 // Typically /usr.
2170 AddDefaultGCCPrefixes(TargetTriple, Prefixes, SysRoot: D.SysRoot);
2171 }
2172
2173 // Try to respect gcc-config on Gentoo if --gcc-toolchain is not provided.
2174 // This avoids accidentally enforcing the system GCC version when using a
2175 // custom toolchain.
2176 SmallVector<StringRef, 16> GentooTestTriples;
2177 // Try to match an exact triple as target triple first.
2178 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for
2179 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu"
2180 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching
2181 // triple x86_64-gentoo-linux-gnu is present.
2182 GentooTestTriples.push_back(Elt: TargetTriple.str());
2183 GentooTestTriples.append(in_start: CandidateTripleAliases.begin(),
2184 in_end: CandidateTripleAliases.end());
2185 if (ScanGentooConfigs(TargetTriple, Args, CandidateTriples: GentooTestTriples,
2186 BiarchTriples: CandidateBiarchTripleAliases))
2187 return;
2188 }
2189
2190 // Loop over the various components which exist and select the best GCC
2191 // installation available. GCC installs are ranked by version number.
2192 const GCCVersion VersionZero = GCCVersion::Parse(VersionText: "0.0.0");
2193 SelectedInstallation.Version = VersionZero;
2194 for (const std::string &Prefix : Prefixes) {
2195 auto &VFS = D.getVFS();
2196 if (!VFS.exists(Path: Prefix))
2197 continue;
2198 for (StringRef Suffix : CandidateLibDirs) {
2199 const std::string LibDir = concat(Path: Prefix, A: Suffix);
2200 if (!VFS.exists(Path: LibDir))
2201 continue;
2202 // Maybe filter out <libdir>/gcc and <libdir>/gcc-cross.
2203 bool GCCDirExists = VFS.exists(Path: LibDir + "/gcc");
2204 bool GCCCrossDirExists = VFS.exists(Path: LibDir + "/gcc-cross");
2205 for (StringRef Candidate : CandidateTripleAliases)
2206 ScanLibDirForGCCTriple(TargetArch: TargetTriple, Args, LibDir, CandidateTriple: Candidate, NeedsBiarchSuffix: false,
2207 GCCDirExists, GCCCrossDirExists);
2208 }
2209 for (StringRef Suffix : CandidateBiarchLibDirs) {
2210 const std::string LibDir = Prefix + Suffix.str();
2211 if (!VFS.exists(Path: LibDir))
2212 continue;
2213 bool GCCDirExists = VFS.exists(Path: LibDir + "/gcc");
2214 bool GCCCrossDirExists = VFS.exists(Path: LibDir + "/gcc-cross");
2215 for (StringRef Candidate : CandidateBiarchTripleAliases)
2216 ScanLibDirForGCCTriple(TargetArch: TargetTriple, Args, LibDir, CandidateTriple: Candidate, NeedsBiarchSuffix: true,
2217 GCCDirExists, GCCCrossDirExists);
2218 }
2219
2220 // Skip other prefixes once a GCC installation is found.
2221 if (SelectedInstallation.Version > VersionZero)
2222 break;
2223 }
2224}
2225
2226void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const {
2227 for (const auto &InstallPath : CandidateGCCInstallPaths)
2228 OS << "Found candidate GCC installation: " << InstallPath << "\n";
2229
2230 if (!SelectedInstallation.GCCInstallPath.empty())
2231 OS << "Selected GCC installation: " << SelectedInstallation.GCCInstallPath
2232 << "\n";
2233
2234 for (const auto &Multilib : Multilibs)
2235 OS << "Candidate multilib: " << Multilib << "\n";
2236
2237 if (Multilibs.size() != 0 ||
2238 !SelectedInstallation.SelectedMultilib.isDefault())
2239 OS << "Selected multilib: " << SelectedInstallation.SelectedMultilib
2240 << "\n";
2241}
2242
2243bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const {
2244 if (BiarchSibling) {
2245 M = *BiarchSibling;
2246 return true;
2247 }
2248 return false;
2249}
2250
2251void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes(
2252 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes,
2253 StringRef SysRoot) {
2254
2255 if (TargetTriple.isOSHaiku()) {
2256 Prefixes.push_back(Elt: concat(Path: SysRoot, A: "/boot/system/develop/tools"));
2257 return;
2258 }
2259
2260 if (TargetTriple.isOSSolaris()) {
2261 // Solaris is a special case.
2262 // The GCC installation is under
2263 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/
2264 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with
2265 // /usr/gcc/<version> as a prefix.
2266
2267 SmallVector<std::pair<GCCVersion, std::string>, 8> SolarisPrefixes;
2268 std::string PrefixDir = concat(Path: SysRoot, A: "/usr/gcc");
2269 std::error_code EC;
2270 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(Dir: PrefixDir, EC),
2271 LE;
2272 !EC && LI != LE; LI = LI.increment(EC)) {
2273 StringRef VersionText = llvm::sys::path::filename(path: LI->path());
2274 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2275
2276 // Filter out obviously bad entries.
2277 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(RHSMajor: 4, RHSMinor: 1, RHSPatch: 1))
2278 continue;
2279
2280 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str();
2281 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc";
2282 if (!D.getVFS().exists(Path: CandidateLibPath))
2283 continue;
2284
2285 SolarisPrefixes.emplace_back(
2286 Args: std::make_pair(x&: CandidateVersion, y&: CandidatePrefix));
2287 }
2288 // Sort in reverse order so GCCInstallationDetector::init picks the latest.
2289 std::sort(first: SolarisPrefixes.rbegin(), last: SolarisPrefixes.rend());
2290 for (auto p : SolarisPrefixes)
2291 Prefixes.emplace_back(Args&: p.second);
2292 return;
2293 }
2294
2295 // For Linux, if --sysroot is not specified, look for RHEL/CentOS devtoolsets
2296 // and gcc-toolsets.
2297 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux &&
2298 D.getVFS().exists(Path: "/opt/rh")) {
2299 // TODO: We may want to remove this, since the functionality
2300 // can be achieved using config files.
2301 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-13/root/usr");
2302 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-12/root/usr");
2303 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-11/root/usr");
2304 Prefixes.push_back(Elt: "/opt/rh/gcc-toolset-10/root/usr");
2305 Prefixes.push_back(Elt: "/opt/rh/devtoolset-12/root/usr");
2306 Prefixes.push_back(Elt: "/opt/rh/devtoolset-11/root/usr");
2307 Prefixes.push_back(Elt: "/opt/rh/devtoolset-10/root/usr");
2308 Prefixes.push_back(Elt: "/opt/rh/devtoolset-9/root/usr");
2309 Prefixes.push_back(Elt: "/opt/rh/devtoolset-8/root/usr");
2310 Prefixes.push_back(Elt: "/opt/rh/devtoolset-7/root/usr");
2311 Prefixes.push_back(Elt: "/opt/rh/devtoolset-6/root/usr");
2312 Prefixes.push_back(Elt: "/opt/rh/devtoolset-4/root/usr");
2313 Prefixes.push_back(Elt: "/opt/rh/devtoolset-3/root/usr");
2314 Prefixes.push_back(Elt: "/opt/rh/devtoolset-2/root/usr");
2315 }
2316
2317 // Fall back to /usr which is used by most non-Solaris systems.
2318 Prefixes.push_back(Elt: concat(Path: SysRoot, A: "/usr"));
2319}
2320
2321/*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples(
2322 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple,
2323 SmallVectorImpl<StringRef> &LibDirs,
2324 SmallVectorImpl<StringRef> &TripleAliases,
2325 SmallVectorImpl<StringRef> &BiarchLibDirs,
2326 SmallVectorImpl<StringRef> &BiarchTripleAliases) {
2327 // Declare a bunch of static data sets that we'll select between below. These
2328 // are specifically designed to always refer to string literals to avoid any
2329 // lifetime or initialization issues.
2330 //
2331 // The *Triples variables hard code some triples so that, for example,
2332 // --target=aarch64 (incomplete triple) can detect lib/aarch64-linux-gnu.
2333 // They are not needed when the user has correct LLVM_DEFAULT_TARGET_TRIPLE
2334 // and always uses the full --target (e.g. --target=aarch64-linux-gnu). The
2335 // lists should shrink over time. Please don't add more elements to *Triples.
2336 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"};
2337 static const char *const AArch64Triples[] = {
2338 "aarch64-none-linux-gnu", "aarch64-redhat-linux", "aarch64-suse-linux"};
2339 static const char *const AArch64beLibDirs[] = {"/lib"};
2340 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu"};
2341
2342 static const char *const ARMLibDirs[] = {"/lib"};
2343 static const char *const ARMTriples[] = {"arm-linux-gnueabi"};
2344 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf",
2345 "armv7hl-redhat-linux-gnueabi",
2346 "armv6hl-suse-linux-gnueabi",
2347 "armv7hl-suse-linux-gnueabi"};
2348 static const char *const ARMebLibDirs[] = {"/lib"};
2349 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi"};
2350 static const char *const ARMebHFTriples[] = {
2351 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"};
2352
2353 static const char *const AVRLibDirs[] = {"/lib"};
2354 static const char *const AVRTriples[] = {"avr"};
2355
2356 static const char *const CSKYLibDirs[] = {"/lib"};
2357 static const char *const CSKYTriples[] = {
2358 "csky-linux-gnuabiv2", "csky-linux-uclibcabiv2", "csky-elf-noneabiv2"};
2359
2360 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"};
2361 static const char *const X86_64Triples[] = {
2362 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu",
2363 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E",
2364 "x86_64-redhat-linux", "x86_64-suse-linux",
2365 "x86_64-manbo-linux-gnu", "x86_64-slackware-linux",
2366 "x86_64-unknown-linux", "x86_64-amazon-linux"};
2367 static const char *const X32Triples[] = {"x86_64-linux-gnux32",
2368 "x86_64-pc-linux-gnux32"};
2369 static const char *const X32LibDirs[] = {"/libx32", "/lib"};
2370 static const char *const X86LibDirs[] = {"/lib32", "/lib"};
2371 static const char *const X86Triples[] = {
2372 "i586-linux-gnu", "i686-linux-gnu", "i686-pc-linux-gnu",
2373 "i386-redhat-linux6E", "i686-redhat-linux", "i386-redhat-linux",
2374 "i586-suse-linux", "i686-montavista-linux",
2375 };
2376
2377 static const char *const LoongArch32LibDirs[] = {"/lib32", "/lib"};
2378 static const char *const LoongArch32Triples[] = {
2379 "loongarch32-linux-gnu", "loongarch32-unknown-linux-gnu",
2380 "loongarch32-linux-gnuf32", "loongarch32-unknown-linux-gnuf32",
2381 "loongarch32-linux-gnusf", "loongarch32-unknown-linux-gnusf"};
2382
2383 static const char *const LoongArch64LibDirs[] = {"/lib64", "/lib"};
2384 static const char *const LoongArch64Triples[] = {
2385 "loongarch64-linux-gnu", "loongarch64-unknown-linux-gnu"};
2386
2387 static const char *const M68kLibDirs[] = {"/lib"};
2388 static const char *const M68kTriples[] = {"m68k-unknown-linux-gnu",
2389 "m68k-suse-linux"};
2390
2391 static const char *const MIPSLibDirs[] = {"/libo32", "/lib"};
2392 static const char *const MIPSTriples[] = {
2393 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu",
2394 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"};
2395 static const char *const MIPSELLibDirs[] = {"/libo32", "/lib"};
2396 static const char *const MIPSELTriples[] = {"mipsel-linux-gnu",
2397 "mips-img-linux-gnu"};
2398
2399 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"};
2400 static const char *const MIPS64Triples[] = {
2401 "mips-mti-linux-gnu", "mips-img-linux-gnu", "mips64-linux-gnuabi64",
2402 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"};
2403 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"};
2404 static const char *const MIPS64ELTriples[] = {
2405 "mips-mti-linux-gnu", "mips-img-linux-gnu", "mips64el-linux-gnuabi64",
2406 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64"};
2407
2408 static const char *const MIPSN32LibDirs[] = {"/lib32"};
2409 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32",
2410 "mipsisa64r6-linux-gnuabin32"};
2411 static const char *const MIPSN32ELLibDirs[] = {"/lib32"};
2412 static const char *const MIPSN32ELTriples[] = {
2413 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"};
2414
2415 static const char *const MSP430LibDirs[] = {"/lib"};
2416 static const char *const MSP430Triples[] = {"msp430-elf"};
2417
2418 static const char *const PPCLibDirs[] = {"/lib32", "/lib"};
2419 static const char *const PPCTriples[] = {
2420 "powerpc-unknown-linux-gnu",
2421 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a
2422 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux".
2423 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"};
2424 static const char *const PPCLELibDirs[] = {"/lib32", "/lib"};
2425 static const char *const PPCLETriples[] = {"powerpcle-unknown-linux-gnu",
2426 "powerpcle-linux-musl"};
2427
2428 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"};
2429 static const char *const PPC64Triples[] = {"powerpc64-unknown-linux-gnu",
2430 "powerpc64-suse-linux",
2431 "ppc64-redhat-linux"};
2432 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"};
2433 static const char *const PPC64LETriples[] = {
2434 "powerpc64le-unknown-linux-gnu", "powerpc64le-none-linux-gnu",
2435 "powerpc64le-suse-linux", "ppc64le-redhat-linux"};
2436
2437 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"};
2438 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu",
2439 "riscv32-unknown-elf"};
2440 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"};
2441 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu",
2442 "riscv64-unknown-elf"};
2443
2444 static const char *const RISCV32beLibDirs[] = {"/lib32", "/lib"};
2445 static const char *const RISCV32beTriples[] = {"riscv32be-unknown-linux-gnu",
2446 "riscv32be-linux-gnu",
2447 "riscv32be-unknown-elf"};
2448 static const char *const RISCV64beLibDirs[] = {"/lib64", "/lib"};
2449 static const char *const RISCV64beTriples[] = {"riscv64be-unknown-linux-gnu",
2450 "riscv64be-linux-gnu",
2451 "riscv64be-unknown-elf"};
2452
2453 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"};
2454 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu",
2455 "sparcv8-linux-gnu"};
2456 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"};
2457 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu",
2458 "sparcv9-linux-gnu"};
2459
2460 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"};
2461 static const char *const SystemZTriples[] = {
2462 "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu", "s390x-suse-linux",
2463 "s390x-redhat-linux"};
2464
2465 using std::begin;
2466 using std::end;
2467
2468 if (TargetTriple.isOSSolaris()) {
2469 static const char *const SolarisLibDirs[] = {"/lib"};
2470 static const char *const SolarisSparcV8Triples[] = {
2471 "sparc-sun-solaris2.11"};
2472 static const char *const SolarisSparcV9Triples[] = {
2473 "sparcv9-sun-solaris2.11"};
2474 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11"};
2475 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11"};
2476 LibDirs.append(in_start: begin(arr: SolarisLibDirs), in_end: end(arr: SolarisLibDirs));
2477 BiarchLibDirs.append(in_start: begin(arr: SolarisLibDirs), in_end: end(arr: SolarisLibDirs));
2478 switch (TargetTriple.getArch()) {
2479 case llvm::Triple::x86:
2480 TripleAliases.append(in_start: begin(arr: SolarisX86Triples), in_end: end(arr: SolarisX86Triples));
2481 BiarchTripleAliases.append(in_start: begin(arr: SolarisX86_64Triples),
2482 in_end: end(arr: SolarisX86_64Triples));
2483 break;
2484 case llvm::Triple::x86_64:
2485 TripleAliases.append(in_start: begin(arr: SolarisX86_64Triples),
2486 in_end: end(arr: SolarisX86_64Triples));
2487 BiarchTripleAliases.append(in_start: begin(arr: SolarisX86Triples),
2488 in_end: end(arr: SolarisX86Triples));
2489 break;
2490 case llvm::Triple::sparc:
2491 TripleAliases.append(in_start: begin(arr: SolarisSparcV8Triples),
2492 in_end: end(arr: SolarisSparcV8Triples));
2493 BiarchTripleAliases.append(in_start: begin(arr: SolarisSparcV9Triples),
2494 in_end: end(arr: SolarisSparcV9Triples));
2495 break;
2496 case llvm::Triple::sparcv9:
2497 TripleAliases.append(in_start: begin(arr: SolarisSparcV9Triples),
2498 in_end: end(arr: SolarisSparcV9Triples));
2499 BiarchTripleAliases.append(in_start: begin(arr: SolarisSparcV8Triples),
2500 in_end: end(arr: SolarisSparcV8Triples));
2501 break;
2502 default:
2503 break;
2504 }
2505 return;
2506 }
2507
2508 // Android targets should not use GNU/Linux tools or libraries.
2509 if (TargetTriple.isAndroid()) {
2510 static const char *const AArch64AndroidTriples[] = {
2511 "aarch64-linux-android"};
2512 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"};
2513 static const char *const X86AndroidTriples[] = {"i686-linux-android"};
2514 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"};
2515
2516 switch (TargetTriple.getArch()) {
2517 case llvm::Triple::aarch64:
2518 LibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2519 TripleAliases.append(in_start: begin(arr: AArch64AndroidTriples),
2520 in_end: end(arr: AArch64AndroidTriples));
2521 break;
2522 case llvm::Triple::arm:
2523 case llvm::Triple::thumb:
2524 LibDirs.append(in_start: begin(arr: ARMLibDirs), in_end: end(arr: ARMLibDirs));
2525 TripleAliases.append(in_start: begin(arr: ARMAndroidTriples), in_end: end(arr: ARMAndroidTriples));
2526 break;
2527 case llvm::Triple::x86_64:
2528 LibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2529 TripleAliases.append(in_start: begin(arr: X86_64AndroidTriples),
2530 in_end: end(arr: X86_64AndroidTriples));
2531 BiarchLibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2532 BiarchTripleAliases.append(in_start: begin(arr: X86AndroidTriples),
2533 in_end: end(arr: X86AndroidTriples));
2534 break;
2535 case llvm::Triple::x86:
2536 LibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2537 TripleAliases.append(in_start: begin(arr: X86AndroidTriples), in_end: end(arr: X86AndroidTriples));
2538 BiarchLibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2539 BiarchTripleAliases.append(in_start: begin(arr: X86_64AndroidTriples),
2540 in_end: end(arr: X86_64AndroidTriples));
2541 break;
2542 default:
2543 break;
2544 }
2545
2546 return;
2547 }
2548
2549 if (TargetTriple.isOSHurd()) {
2550 switch (TargetTriple.getArch()) {
2551 case llvm::Triple::aarch64:
2552 LibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2553 TripleAliases.push_back(Elt: "aarch64-gnu");
2554 break;
2555 case llvm::Triple::riscv64:
2556 LibDirs.append(in_start: begin(arr: RISCV64LibDirs), in_end: end(arr: RISCV64LibDirs));
2557 TripleAliases.push_back(Elt: "riscv64-gnu");
2558 break;
2559 case llvm::Triple::x86_64:
2560 LibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2561 TripleAliases.push_back(Elt: "x86_64-gnu");
2562 break;
2563 case llvm::Triple::x86:
2564 LibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2565 TripleAliases.push_back(Elt: "i686-gnu");
2566 break;
2567 default:
2568 break;
2569 }
2570
2571 return;
2572 }
2573
2574 if (TargetTriple.isWindowsCygwinEnvironment()) {
2575 LibDirs.push_back(Elt: "/lib");
2576 switch (TargetTriple.getArch()) {
2577 case llvm::Triple::x86_64:
2578 TripleAliases.append(IL: {"x86_64-pc-cygwin", "x86_64-pc-msys"});
2579 break;
2580 case llvm::Triple::x86:
2581 TripleAliases.append(IL: {"i686-pc-cygwin", "i686-pc-msys"});
2582 break;
2583 default:
2584 break;
2585 }
2586
2587 return;
2588 }
2589
2590 switch (TargetTriple.getArch()) {
2591 case llvm::Triple::aarch64:
2592 LibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2593 TripleAliases.append(in_start: begin(arr: AArch64Triples), in_end: end(arr: AArch64Triples));
2594 BiarchLibDirs.append(in_start: begin(arr: AArch64LibDirs), in_end: end(arr: AArch64LibDirs));
2595 BiarchTripleAliases.append(in_start: begin(arr: AArch64Triples), in_end: end(arr: AArch64Triples));
2596 break;
2597 case llvm::Triple::aarch64_be:
2598 LibDirs.append(in_start: begin(arr: AArch64beLibDirs), in_end: end(arr: AArch64beLibDirs));
2599 TripleAliases.append(in_start: begin(arr: AArch64beTriples), in_end: end(arr: AArch64beTriples));
2600 BiarchLibDirs.append(in_start: begin(arr: AArch64beLibDirs), in_end: end(arr: AArch64beLibDirs));
2601 BiarchTripleAliases.append(in_start: begin(arr: AArch64beTriples), in_end: end(arr: AArch64beTriples));
2602 break;
2603 case llvm::Triple::arm:
2604 case llvm::Triple::thumb:
2605 LibDirs.append(in_start: begin(arr: ARMLibDirs), in_end: end(arr: ARMLibDirs));
2606 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF ||
2607 TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHFT64 ||
2608 TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF ||
2609 TargetTriple.getEnvironment() == llvm::Triple::EABIHF) {
2610 TripleAliases.append(in_start: begin(arr: ARMHFTriples), in_end: end(arr: ARMHFTriples));
2611 } else {
2612 TripleAliases.append(in_start: begin(arr: ARMTriples), in_end: end(arr: ARMTriples));
2613 }
2614 break;
2615 case llvm::Triple::armeb:
2616 case llvm::Triple::thumbeb:
2617 LibDirs.append(in_start: begin(arr: ARMebLibDirs), in_end: end(arr: ARMebLibDirs));
2618 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF ||
2619 TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHFT64 ||
2620 TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF ||
2621 TargetTriple.getEnvironment() == llvm::Triple::EABIHF) {
2622 TripleAliases.append(in_start: begin(arr: ARMebHFTriples), in_end: end(arr: ARMebHFTriples));
2623 } else {
2624 TripleAliases.append(in_start: begin(arr: ARMebTriples), in_end: end(arr: ARMebTriples));
2625 }
2626 break;
2627 case llvm::Triple::avr:
2628 LibDirs.append(in_start: begin(arr: AVRLibDirs), in_end: end(arr: AVRLibDirs));
2629 TripleAliases.append(in_start: begin(arr: AVRTriples), in_end: end(arr: AVRTriples));
2630 break;
2631 case llvm::Triple::csky:
2632 LibDirs.append(in_start: begin(arr: CSKYLibDirs), in_end: end(arr: CSKYLibDirs));
2633 TripleAliases.append(in_start: begin(arr: CSKYTriples), in_end: end(arr: CSKYTriples));
2634 break;
2635 case llvm::Triple::x86_64:
2636 if (TargetTriple.isX32()) {
2637 LibDirs.append(in_start: begin(arr: X32LibDirs), in_end: end(arr: X32LibDirs));
2638 TripleAliases.append(in_start: begin(arr: X32Triples), in_end: end(arr: X32Triples));
2639 BiarchLibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2640 BiarchTripleAliases.append(in_start: begin(arr: X86_64Triples), in_end: end(arr: X86_64Triples));
2641 } else {
2642 LibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2643 TripleAliases.append(in_start: begin(arr: X86_64Triples), in_end: end(arr: X86_64Triples));
2644 BiarchLibDirs.append(in_start: begin(arr: X32LibDirs), in_end: end(arr: X32LibDirs));
2645 BiarchTripleAliases.append(in_start: begin(arr: X32Triples), in_end: end(arr: X32Triples));
2646 }
2647 BiarchLibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2648 BiarchTripleAliases.append(in_start: begin(arr: X86Triples), in_end: end(arr: X86Triples));
2649 break;
2650 case llvm::Triple::x86:
2651 LibDirs.append(in_start: begin(arr: X86LibDirs), in_end: end(arr: X86LibDirs));
2652 // MCU toolchain is 32 bit only and its triple alias is TargetTriple
2653 // itself, which will be appended below.
2654 if (!TargetTriple.isOSIAMCU()) {
2655 TripleAliases.append(in_start: begin(arr: X86Triples), in_end: end(arr: X86Triples));
2656 BiarchLibDirs.append(in_start: begin(arr: X86_64LibDirs), in_end: end(arr: X86_64LibDirs));
2657 BiarchTripleAliases.append(in_start: begin(arr: X86_64Triples), in_end: end(arr: X86_64Triples));
2658 BiarchLibDirs.append(in_start: begin(arr: X32LibDirs), in_end: end(arr: X32LibDirs));
2659 BiarchTripleAliases.append(in_start: begin(arr: X32Triples), in_end: end(arr: X32Triples));
2660 }
2661 break;
2662 case llvm::Triple::loongarch32:
2663 LibDirs.append(in_start: begin(arr: LoongArch32LibDirs), in_end: end(arr: LoongArch32LibDirs));
2664 TripleAliases.append(in_start: begin(arr: LoongArch32Triples), in_end: end(arr: LoongArch32Triples));
2665 break;
2666 case llvm::Triple::loongarch64:
2667 LibDirs.append(in_start: begin(arr: LoongArch64LibDirs), in_end: end(arr: LoongArch64LibDirs));
2668 TripleAliases.append(in_start: begin(arr: LoongArch64Triples), in_end: end(arr: LoongArch64Triples));
2669 break;
2670 case llvm::Triple::m68k:
2671 LibDirs.append(in_start: begin(arr: M68kLibDirs), in_end: end(arr: M68kLibDirs));
2672 TripleAliases.append(in_start: begin(arr: M68kTriples), in_end: end(arr: M68kTriples));
2673 break;
2674 case llvm::Triple::mips:
2675 LibDirs.append(in_start: begin(arr: MIPSLibDirs), in_end: end(arr: MIPSLibDirs));
2676 TripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2677 BiarchLibDirs.append(in_start: begin(arr: MIPS64LibDirs), in_end: end(arr: MIPS64LibDirs));
2678 BiarchTripleAliases.append(in_start: begin(arr: MIPS64Triples), in_end: end(arr: MIPS64Triples));
2679 BiarchLibDirs.append(in_start: begin(arr: MIPSN32LibDirs), in_end: end(arr: MIPSN32LibDirs));
2680 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32Triples), in_end: end(arr: MIPSN32Triples));
2681 break;
2682 case llvm::Triple::mipsel:
2683 LibDirs.append(in_start: begin(arr: MIPSELLibDirs), in_end: end(arr: MIPSELLibDirs));
2684 TripleAliases.append(in_start: begin(arr: MIPSELTriples), in_end: end(arr: MIPSELTriples));
2685 TripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2686 BiarchLibDirs.append(in_start: begin(arr: MIPS64ELLibDirs), in_end: end(arr: MIPS64ELLibDirs));
2687 BiarchTripleAliases.append(in_start: begin(arr: MIPS64ELTriples), in_end: end(arr: MIPS64ELTriples));
2688 BiarchLibDirs.append(in_start: begin(arr: MIPSN32ELLibDirs), in_end: end(arr: MIPSN32ELLibDirs));
2689 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32ELTriples), in_end: end(arr: MIPSN32ELTriples));
2690 break;
2691 case llvm::Triple::mips64:
2692 LibDirs.append(in_start: begin(arr: MIPS64LibDirs), in_end: end(arr: MIPS64LibDirs));
2693 TripleAliases.append(in_start: begin(arr: MIPS64Triples), in_end: end(arr: MIPS64Triples));
2694 BiarchLibDirs.append(in_start: begin(arr: MIPSLibDirs), in_end: end(arr: MIPSLibDirs));
2695 BiarchTripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2696 BiarchLibDirs.append(in_start: begin(arr: MIPSN32LibDirs), in_end: end(arr: MIPSN32LibDirs));
2697 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32Triples), in_end: end(arr: MIPSN32Triples));
2698 break;
2699 case llvm::Triple::mips64el:
2700 LibDirs.append(in_start: begin(arr: MIPS64ELLibDirs), in_end: end(arr: MIPS64ELLibDirs));
2701 TripleAliases.append(in_start: begin(arr: MIPS64ELTriples), in_end: end(arr: MIPS64ELTriples));
2702 BiarchLibDirs.append(in_start: begin(arr: MIPSELLibDirs), in_end: end(arr: MIPSELLibDirs));
2703 BiarchTripleAliases.append(in_start: begin(arr: MIPSELTriples), in_end: end(arr: MIPSELTriples));
2704 BiarchLibDirs.append(in_start: begin(arr: MIPSN32ELLibDirs), in_end: end(arr: MIPSN32ELLibDirs));
2705 BiarchTripleAliases.append(in_start: begin(arr: MIPSN32ELTriples), in_end: end(arr: MIPSN32ELTriples));
2706 BiarchTripleAliases.append(in_start: begin(arr: MIPSTriples), in_end: end(arr: MIPSTriples));
2707 break;
2708 case llvm::Triple::msp430:
2709 LibDirs.append(in_start: begin(arr: MSP430LibDirs), in_end: end(arr: MSP430LibDirs));
2710 TripleAliases.append(in_start: begin(arr: MSP430Triples), in_end: end(arr: MSP430Triples));
2711 break;
2712 case llvm::Triple::ppc:
2713 LibDirs.append(in_start: begin(arr: PPCLibDirs), in_end: end(arr: PPCLibDirs));
2714 TripleAliases.append(in_start: begin(arr: PPCTriples), in_end: end(arr: PPCTriples));
2715 BiarchLibDirs.append(in_start: begin(arr: PPC64LibDirs), in_end: end(arr: PPC64LibDirs));
2716 BiarchTripleAliases.append(in_start: begin(arr: PPC64Triples), in_end: end(arr: PPC64Triples));
2717 break;
2718 case llvm::Triple::ppcle:
2719 LibDirs.append(in_start: begin(arr: PPCLELibDirs), in_end: end(arr: PPCLELibDirs));
2720 TripleAliases.append(in_start: begin(arr: PPCLETriples), in_end: end(arr: PPCLETriples));
2721 BiarchLibDirs.append(in_start: begin(arr: PPC64LELibDirs), in_end: end(arr: PPC64LELibDirs));
2722 BiarchTripleAliases.append(in_start: begin(arr: PPC64LETriples), in_end: end(arr: PPC64LETriples));
2723 break;
2724 case llvm::Triple::ppc64:
2725 LibDirs.append(in_start: begin(arr: PPC64LibDirs), in_end: end(arr: PPC64LibDirs));
2726 TripleAliases.append(in_start: begin(arr: PPC64Triples), in_end: end(arr: PPC64Triples));
2727 BiarchLibDirs.append(in_start: begin(arr: PPCLibDirs), in_end: end(arr: PPCLibDirs));
2728 BiarchTripleAliases.append(in_start: begin(arr: PPCTriples), in_end: end(arr: PPCTriples));
2729 break;
2730 case llvm::Triple::ppc64le:
2731 LibDirs.append(in_start: begin(arr: PPC64LELibDirs), in_end: end(arr: PPC64LELibDirs));
2732 TripleAliases.append(in_start: begin(arr: PPC64LETriples), in_end: end(arr: PPC64LETriples));
2733 BiarchLibDirs.append(in_start: begin(arr: PPCLELibDirs), in_end: end(arr: PPCLELibDirs));
2734 BiarchTripleAliases.append(in_start: begin(arr: PPCLETriples), in_end: end(arr: PPCLETriples));
2735 break;
2736 case llvm::Triple::riscv32:
2737 LibDirs.append(in_start: begin(arr: RISCV32LibDirs), in_end: end(arr: RISCV32LibDirs));
2738 TripleAliases.append(in_start: begin(arr: RISCV32Triples), in_end: end(arr: RISCV32Triples));
2739 BiarchLibDirs.append(in_start: begin(arr: RISCV64LibDirs), in_end: end(arr: RISCV64LibDirs));
2740 BiarchTripleAliases.append(in_start: begin(arr: RISCV64Triples), in_end: end(arr: RISCV64Triples));
2741 break;
2742 case llvm::Triple::riscv64:
2743 LibDirs.append(in_start: begin(arr: RISCV64LibDirs), in_end: end(arr: RISCV64LibDirs));
2744 TripleAliases.append(in_start: begin(arr: RISCV64Triples), in_end: end(arr: RISCV64Triples));
2745 BiarchLibDirs.append(in_start: begin(arr: RISCV32LibDirs), in_end: end(arr: RISCV32LibDirs));
2746 BiarchTripleAliases.append(in_start: begin(arr: RISCV32Triples), in_end: end(arr: RISCV32Triples));
2747 break;
2748 case llvm::Triple::riscv32be:
2749 LibDirs.append(in_start: begin(arr: RISCV32beLibDirs), in_end: end(arr: RISCV32beLibDirs));
2750 TripleAliases.append(in_start: begin(arr: RISCV32beTriples), in_end: end(arr: RISCV32beTriples));
2751 BiarchLibDirs.append(in_start: begin(arr: RISCV64beLibDirs), in_end: end(arr: RISCV64beLibDirs));
2752 BiarchTripleAliases.append(in_start: begin(arr: RISCV64beTriples), in_end: end(arr: RISCV64beTriples));
2753 break;
2754 case llvm::Triple::riscv64be:
2755 LibDirs.append(in_start: begin(arr: RISCV64beLibDirs), in_end: end(arr: RISCV64beLibDirs));
2756 TripleAliases.append(in_start: begin(arr: RISCV64beTriples), in_end: end(arr: RISCV64beTriples));
2757 BiarchLibDirs.append(in_start: begin(arr: RISCV32beLibDirs), in_end: end(arr: RISCV32beLibDirs));
2758 BiarchTripleAliases.append(in_start: begin(arr: RISCV32beTriples), in_end: end(arr: RISCV32beTriples));
2759 break;
2760 case llvm::Triple::sparc:
2761 case llvm::Triple::sparcel:
2762 LibDirs.append(in_start: begin(arr: SPARCv8LibDirs), in_end: end(arr: SPARCv8LibDirs));
2763 TripleAliases.append(in_start: begin(arr: SPARCv8Triples), in_end: end(arr: SPARCv8Triples));
2764 BiarchLibDirs.append(in_start: begin(arr: SPARCv9LibDirs), in_end: end(arr: SPARCv9LibDirs));
2765 BiarchTripleAliases.append(in_start: begin(arr: SPARCv9Triples), in_end: end(arr: SPARCv9Triples));
2766 break;
2767 case llvm::Triple::sparcv9:
2768 LibDirs.append(in_start: begin(arr: SPARCv9LibDirs), in_end: end(arr: SPARCv9LibDirs));
2769 TripleAliases.append(in_start: begin(arr: SPARCv9Triples), in_end: end(arr: SPARCv9Triples));
2770 BiarchLibDirs.append(in_start: begin(arr: SPARCv8LibDirs), in_end: end(arr: SPARCv8LibDirs));
2771 BiarchTripleAliases.append(in_start: begin(arr: SPARCv8Triples), in_end: end(arr: SPARCv8Triples));
2772 break;
2773 case llvm::Triple::systemz:
2774 LibDirs.append(in_start: begin(arr: SystemZLibDirs), in_end: end(arr: SystemZLibDirs));
2775 TripleAliases.append(in_start: begin(arr: SystemZTriples), in_end: end(arr: SystemZTriples));
2776 break;
2777 default:
2778 // By default, just rely on the standard lib directories and the original
2779 // triple.
2780 break;
2781 }
2782
2783 // Also include the multiarch variant if it's different.
2784 if (TargetTriple.str() != BiarchTriple.str())
2785 BiarchTripleAliases.push_back(Elt: BiarchTriple.str());
2786}
2787
2788bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs(
2789 const llvm::Triple &TargetTriple, const ArgList &Args,
2790 StringRef Path, bool NeedsBiarchSuffix) {
2791 llvm::Triple::ArchType TargetArch = TargetTriple.getArch();
2792 DetectedMultilibs Detected;
2793
2794 // Android standalone toolchain could have multilibs for ARM and Thumb.
2795 // Debian mips multilibs behave more like the rest of the biarch ones,
2796 // so handle them there
2797 if (isArmOrThumbArch(Arch: TargetArch) && TargetTriple.isAndroid()) {
2798 // It should also work without multilibs in a simplified toolchain.
2799 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Result&: Detected);
2800 } else if (TargetTriple.isCSKY()) {
2801 findCSKYMultilibs(D, TargetTriple, Path, Args, Result&: Detected);
2802 } else if (TargetTriple.isMIPS()) {
2803 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Result&: Detected))
2804 return false;
2805 } else if (TargetTriple.isRISCV()) {
2806 findRISCVMultilibs(D, TargetTriple, Path, Args, Result&: Detected);
2807 } else if (isMSP430(Arch: TargetArch)) {
2808 findMSP430Multilibs(D, TargetTriple, Path, Args, Result&: Detected);
2809 } else if (TargetArch == llvm::Triple::avr) {
2810 // AVR has no multilibs.
2811 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args,
2812 NeedsBiarchSuffix, Result&: Detected)) {
2813 return false;
2814 }
2815
2816 Multilibs = Detected.Multilibs;
2817 SelectedInstallation.SelectedMultilib =
2818 Detected.SelectedMultilibs.empty() ? Multilib()
2819 : Detected.SelectedMultilibs.back();
2820 BiarchSibling = Detected.BiarchSibling;
2821
2822 return true;
2823}
2824
2825bool Generic_GCC::GCCInstallationDetector::SelectGCCInstallationDirectory(
2826 const SmallVector<Generic_GCC::GCCInstallCandidate, 3> &Installations,
2827 const ArgList &Args,
2828 Generic_GCC::GCCInstallCandidate &SelectedInstallation) const {
2829 if (Installations.empty())
2830 return false;
2831
2832 SelectedInstallation =
2833 *max_element(Range: Installations, C: [](const auto &Max, const auto &I) {
2834 return I.Version > Max.Version;
2835 });
2836
2837 // FIXME Start selecting installation with libstdc++ in clang 22,
2838 // using the current way of selecting the installation as a fallback
2839 // only. For now, warn if the installation with libstdc++ differs
2840 // from SelectedInstallation.
2841 const GCCInstallCandidate *InstallWithIncludes = nullptr;
2842 for (const auto &I : Installations) {
2843 if ((!InstallWithIncludes || I.Version > InstallWithIncludes->Version) &&
2844 GCCInstallationHasLibStdcxxIncludePaths(GCCInstallation: I, DriverArgs: Args))
2845 InstallWithIncludes = &I;
2846 }
2847
2848 if (InstallWithIncludes && SelectedInstallation.GCCInstallPath !=
2849 InstallWithIncludes->GCCInstallPath)
2850 D.Diag(DiagID: diag::warn_drv_gcc_install_dir_libstdcxx)
2851 << InstallWithIncludes->GCCInstallPath
2852 << SelectedInstallation.GCCInstallPath;
2853
2854 // TODO Warn if SelectedInstallation does not contain libstdc++ includes
2855 // although compiler flags indicate that it is required (C++ compilation,
2856 // libstdc++ not explicitly disabled).
2857
2858 return true;
2859}
2860
2861void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple(
2862 const llvm::Triple &TargetTriple, const ArgList &Args,
2863 const std::string &LibDir, StringRef CandidateTriple,
2864 bool NeedsBiarchSuffix, bool GCCDirExists, bool GCCCrossDirExists) {
2865 // Locations relative to the system lib directory where GCC's triple-specific
2866 // directories might reside.
2867 struct GCCLibSuffix {
2868 // Path from system lib directory to GCC triple-specific directory.
2869 std::string LibSuffix;
2870 // Path from GCC triple-specific directory back to system lib directory.
2871 // This is one '..' component per component in LibSuffix.
2872 StringRef ReversePath;
2873 // Whether this library suffix is relevant for the triple.
2874 bool Active;
2875 } Suffixes[] = {
2876 // This is the normal place.
2877 {.LibSuffix: "gcc/" + CandidateTriple.str(), .ReversePath: "../..", .Active: GCCDirExists},
2878
2879 // Debian puts cross-compilers in gcc-cross.
2880 {.LibSuffix: "gcc-cross/" + CandidateTriple.str(), .ReversePath: "../..", .Active: GCCCrossDirExists},
2881
2882 // The Freescale PPC SDK has the gcc libraries in
2883 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do
2884 // this on Freescale triples, though, since some systems put a *lot* of
2885 // files in that location, not just GCC installation data.
2886 {.LibSuffix: CandidateTriple.str(), .ReversePath: "..",
2887 .Active: TargetTriple.getVendor() == llvm::Triple::Freescale ||
2888 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}};
2889
2890 SmallVector<GCCInstallCandidate, 3> Installations;
2891 for (auto &Suffix : Suffixes) {
2892 if (!Suffix.Active)
2893 continue;
2894
2895 StringRef LibSuffix = Suffix.LibSuffix;
2896 std::error_code EC;
2897 for (llvm::vfs::directory_iterator
2898 LI = D.getVFS().dir_begin(Dir: LibDir + "/" + LibSuffix, EC),
2899 LE;
2900 !EC && LI != LE; LI = LI.increment(EC)) {
2901 StringRef VersionText = llvm::sys::path::filename(path: LI->path());
2902 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText);
2903 if (CandidateVersion.Major != -1) // Filter obviously bad entries.
2904 if (!CandidateGCCInstallPaths.insert(x: std::string(LI->path())).second)
2905 continue; // Saw this path before; no need to look at it again.
2906 if (CandidateVersion.isOlderThan(RHSMajor: 4, RHSMinor: 1, RHSPatch: 1))
2907 continue;
2908 if (CandidateVersion <= SelectedInstallation.Version && IsValid)
2909 continue;
2910
2911 if (!ScanGCCForMultilibs(TargetTriple, Args, Path: LI->path(),
2912 NeedsBiarchSuffix))
2913 continue;
2914
2915 GCCInstallCandidate Installation;
2916 Installation.Version = CandidateVersion;
2917 Installation.GCCTriple.setTriple(CandidateTriple);
2918 // FIXME: We hack together the directory name here instead of
2919 // using LI to ensure stable path separators across Windows and
2920 // Linux.
2921 Installation.GCCInstallPath =
2922 (LibDir + "/" + LibSuffix + "/" + VersionText).str();
2923 Installation.GCCParentLibPath =
2924 (Installation.GCCInstallPath + "/../" + Suffix.ReversePath).str();
2925 Installation.SelectedMultilib = getMultilib();
2926
2927 Installations.push_back(Elt: Installation);
2928 }
2929 }
2930
2931 IsValid |=
2932 SelectGCCInstallationDirectory(Installations, Args, SelectedInstallation);
2933}
2934
2935bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs(
2936 const llvm::Triple &TargetTriple, const ArgList &Args,
2937 const SmallVectorImpl<StringRef> &CandidateTriples,
2938 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) {
2939 if (!D.getVFS().exists(Path: concat(Path: D.SysRoot, A: GentooConfigDir)))
2940 return false;
2941
2942 for (StringRef CandidateTriple : CandidateTriples) {
2943 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple))
2944 return true;
2945 }
2946
2947 for (StringRef CandidateTriple : CandidateBiarchTriples) {
2948 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, NeedsBiarchSuffix: true))
2949 return true;
2950 }
2951 return false;
2952}
2953
2954bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig(
2955 const llvm::Triple &TargetTriple, const ArgList &Args,
2956 StringRef CandidateTriple, bool NeedsBiarchSuffix) {
2957 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
2958 D.getVFS().getBufferForFile(Name: concat(Path: D.SysRoot, A: GentooConfigDir,
2959 B: "/config-" + CandidateTriple.str()));
2960 if (File) {
2961 SmallVector<StringRef, 2> Lines;
2962 File.get()->getBuffer().split(A&: Lines, Separator: "\n");
2963 for (StringRef Line : Lines) {
2964 Line = Line.trim();
2965 // CURRENT=triple-version
2966 if (!Line.consume_front(Prefix: "CURRENT="))
2967 continue;
2968 // Process the config file pointed to by CURRENT.
2969 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile =
2970 D.getVFS().getBufferForFile(
2971 Name: concat(Path: D.SysRoot, A: GentooConfigDir, B: "/" + Line));
2972 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit(Separator: '-');
2973 // List of paths to scan for libraries.
2974 SmallVector<StringRef, 4> GentooScanPaths;
2975 // Scan the Config file to find installed GCC libraries path.
2976 // Typical content of the GCC config file:
2977 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/
2978 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32"
2979 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man"
2980 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info"
2981 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4"
2982 // We are looking for the paths listed in LDPATH=... .
2983 if (ConfigFile) {
2984 SmallVector<StringRef, 2> ConfigLines;
2985 ConfigFile.get()->getBuffer().split(A&: ConfigLines, Separator: "\n");
2986 for (StringRef ConfLine : ConfigLines) {
2987 ConfLine = ConfLine.trim();
2988 if (ConfLine.consume_front(Prefix: "LDPATH=")) {
2989 // Drop '"' from front and back if present.
2990 ConfLine.consume_back(Suffix: "\"");
2991 ConfLine.consume_front(Prefix: "\"");
2992 // Get all paths sperated by ':'
2993 ConfLine.split(A&: GentooScanPaths, Separator: ':', MaxSplit: -1, /*AllowEmpty*/ KeepEmpty: false);
2994 }
2995 }
2996 }
2997 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}.
2998 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/"
2999 + ActiveVersion.second.str();
3000 GentooScanPaths.push_back(Elt: StringRef(basePath));
3001
3002 // Scan all paths for GCC libraries.
3003 for (const auto &GentooScanPath : GentooScanPaths) {
3004 std::string GentooPath = concat(Path: D.SysRoot, A: GentooScanPath);
3005 if (D.getVFS().exists(Path: GentooPath + "/crtbegin.o")) {
3006 if (!ScanGCCForMultilibs(TargetTriple, Args, Path: GentooPath,
3007 NeedsBiarchSuffix))
3008 continue;
3009
3010 SelectedInstallation.Version =
3011 GCCVersion::Parse(VersionText: ActiveVersion.second);
3012 SelectedInstallation.GCCInstallPath = GentooPath;
3013 SelectedInstallation.GCCParentLibPath =
3014 GentooPath + std::string("/../../..");
3015 SelectedInstallation.GCCTriple.setTriple(ActiveVersion.first);
3016 IsValid = true;
3017 return true;
3018 }
3019 }
3020 }
3021 }
3022
3023 return false;
3024}
3025
3026Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple,
3027 const ArgList &Args)
3028 : ToolChain(D, Triple, Args), GCCInstallation(D),
3029 CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args),
3030 SYCLInstallation(D, Triple, Args) {
3031 getProgramPaths().push_back(Elt: getDriver().Dir);
3032}
3033
3034Generic_GCC::~Generic_GCC() {}
3035
3036Tool *Generic_GCC::getTool(Action::ActionClass AC) const {
3037 switch (AC) {
3038 case Action::PreprocessJobClass:
3039 if (!Preprocess)
3040 Preprocess.reset(p: new clang::driver::tools::gcc::Preprocessor(*this));
3041 return Preprocess.get();
3042 case Action::CompileJobClass:
3043 if (!Compile)
3044 Compile.reset(p: new tools::gcc::Compiler(*this));
3045 return Compile.get();
3046 default:
3047 return ToolChain::getTool(AC);
3048 }
3049}
3050
3051Tool *Generic_GCC::buildAssembler() const {
3052 return new tools::gnutools::Assembler(*this);
3053}
3054
3055Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); }
3056
3057void Generic_GCC::printVerboseInfo(raw_ostream &OS) const {
3058 // Print the information about how we detected the GCC installation.
3059 GCCInstallation.print(OS);
3060 CudaInstallation->print(OS);
3061 RocmInstallation->print(OS);
3062}
3063
3064ToolChain::UnwindTableLevel
3065Generic_GCC::getDefaultUnwindTableLevel(const ArgList &Args) const {
3066 switch (getArch()) {
3067 case llvm::Triple::aarch64:
3068 case llvm::Triple::aarch64_be:
3069 case llvm::Triple::ppc:
3070 case llvm::Triple::ppcle:
3071 case llvm::Triple::ppc64:
3072 case llvm::Triple::ppc64le:
3073 case llvm::Triple::riscv32:
3074 case llvm::Triple::riscv64:
3075 case llvm::Triple::riscv32be:
3076 case llvm::Triple::riscv64be:
3077 case llvm::Triple::x86:
3078 case llvm::Triple::x86_64:
3079 return UnwindTableLevel::Asynchronous;
3080 default:
3081 return UnwindTableLevel::None;
3082 }
3083}
3084
3085bool Generic_GCC::isPICDefault() const {
3086 switch (getArch()) {
3087 case llvm::Triple::x86_64:
3088 return getTriple().isOSWindows();
3089 case llvm::Triple::mips64:
3090 case llvm::Triple::mips64el:
3091 return true;
3092 default:
3093 return false;
3094 }
3095}
3096
3097bool Generic_GCC::isPIEDefault(const llvm::opt::ArgList &Args) const {
3098 return false;
3099}
3100
3101bool Generic_GCC::isPICDefaultForced() const {
3102 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows();
3103}
3104
3105bool Generic_GCC::IsIntegratedAssemblerDefault() const {
3106 switch (getTriple().getArch()) {
3107 case llvm::Triple::nvptx:
3108 case llvm::Triple::nvptx64:
3109 case llvm::Triple::xcore:
3110 return false;
3111 default:
3112 return true;
3113 }
3114}
3115
3116void Generic_GCC::PushPPaths(ToolChain::path_list &PPaths) {
3117 // Cross-compiling binutils and GCC installations (vanilla and openSUSE at
3118 // least) put various tools in a triple-prefixed directory off of the parent
3119 // of the GCC installation. We use the GCC triple here to ensure that we end
3120 // up with tools that support the same amount of cross compiling as the
3121 // detected GCC installation. For example, if we find a GCC installation
3122 // targeting x86_64, but it is a bi-arch GCC installation, it can also be
3123 // used to target i386.
3124 if (GCCInstallation.isValid()) {
3125 PPaths.push_back(Elt: Twine(GCCInstallation.getParentLibPath() + "/../" +
3126 GCCInstallation.getTriple().str() + "/bin")
3127 .str());
3128 }
3129}
3130
3131void Generic_GCC::AddMultilibPaths(const Driver &D,
3132 const std::string &SysRoot,
3133 const std::string &OSLibDir,
3134 const std::string &MultiarchTriple,
3135 path_list &Paths) {
3136 // Add the multilib suffixed paths where they are available.
3137 if (GCCInstallation.isValid()) {
3138 assert(!SelectedMultilibs.empty());
3139 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3140 const std::string &LibPath =
3141 std::string(GCCInstallation.getParentLibPath());
3142
3143 // Sourcery CodeBench MIPS toolchain holds some libraries under
3144 // a biarch-like suffix of the GCC installation.
3145 if (const auto &PathsCallback = Multilibs.filePathsCallback())
3146 for (const auto &Path : PathsCallback(SelectedMultilibs.back()))
3147 addPathIfExists(D, Path: GCCInstallation.getInstallPath() + Path, Paths);
3148
3149 // Add lib/gcc/$triple/$version, with an optional /multilib suffix.
3150 addPathIfExists(D,
3151 Path: GCCInstallation.getInstallPath() +
3152 SelectedMultilibs.back().gccSuffix(),
3153 Paths);
3154
3155 // Add lib/gcc/$triple/$libdir
3156 // For GCC built with --enable-version-specific-runtime-libs.
3157 addPathIfExists(D, Path: GCCInstallation.getInstallPath() + "/../" + OSLibDir,
3158 Paths);
3159
3160 // GCC cross compiling toolchains will install target libraries which ship
3161 // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as
3162 // any part of the GCC installation in
3163 // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat
3164 // debatable, but is the reality today. We need to search this tree even
3165 // when we have a sysroot somewhere else. It is the responsibility of
3166 // whomever is doing the cross build targeting a sysroot using a GCC
3167 // installation that is *not* within the system root to ensure two things:
3168 //
3169 // 1) Any DSOs that are linked in from this tree or from the install path
3170 // above must be present on the system root and found via an
3171 // appropriate rpath.
3172 // 2) There must not be libraries installed into
3173 // <prefix>/<triple>/<libdir> unless they should be preferred over
3174 // those within the system root.
3175 //
3176 // Note that this matches the GCC behavior. See the below comment for where
3177 // Clang diverges from GCC's behavior.
3178 addPathIfExists(D,
3179 Path: LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir +
3180 SelectedMultilibs.back().osSuffix(),
3181 Paths);
3182
3183 // If the GCC installation we found is inside of the sysroot, we want to
3184 // prefer libraries installed in the parent prefix of the GCC installation.
3185 // It is important to *not* use these paths when the GCC installation is
3186 // outside of the system root as that can pick up unintended libraries.
3187 // This usually happens when there is an external cross compiler on the
3188 // host system, and a more minimal sysroot available that is the target of
3189 // the cross. Note that GCC does include some of these directories in some
3190 // configurations but this seems somewhere between questionable and simply
3191 // a bug.
3192 if (StringRef(LibPath).starts_with(Prefix: SysRoot))
3193 addPathIfExists(D, Path: LibPath + "/../" + OSLibDir, Paths);
3194 }
3195}
3196
3197void Generic_GCC::AddMultiarchPaths(const Driver &D,
3198 const std::string &SysRoot,
3199 const std::string &OSLibDir,
3200 path_list &Paths) {
3201 if (GCCInstallation.isValid()) {
3202 const std::string &LibPath =
3203 std::string(GCCInstallation.getParentLibPath());
3204 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3205 const Multilib &Multilib = GCCInstallation.getMultilib();
3206 addPathIfExists(
3207 D, Path: LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(),
3208 Paths);
3209 }
3210}
3211
3212void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs,
3213 ArgStringList &CC1Args) const {
3214 // Add include directories specific to the selected multilib set and multilib.
3215 if (!GCCInstallation.isValid())
3216 return;
3217 // gcc TOOL_INCLUDE_DIR.
3218 const llvm::Triple &GCCTriple = GCCInstallation.getTriple();
3219 std::string LibPath(GCCInstallation.getParentLibPath());
3220 ToolChain::addSystemInclude(DriverArgs, CC1Args,
3221 Path: Twine(LibPath) + "/../" + GCCTriple.str() +
3222 "/include");
3223
3224 const auto &Callback = Multilibs.includeDirsCallback();
3225 if (Callback) {
3226 for (const auto &Path : Callback(GCCInstallation.getMultilib()))
3227 addExternCSystemIncludeIfExists(DriverArgs, CC1Args,
3228 Path: GCCInstallation.getInstallPath() + Path);
3229 }
3230}
3231
3232void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs,
3233 ArgStringList &CC1Args) const {
3234 if (DriverArgs.hasArg(Ids: options::OPT_nostdinc, Ids: options::OPT_nostdincxx,
3235 Ids: options::OPT_nostdlibinc))
3236 return;
3237
3238 switch (GetCXXStdlibType(Args: DriverArgs)) {
3239 case ToolChain::CST_Libcxx:
3240 addLibCxxIncludePaths(DriverArgs, CC1Args);
3241 break;
3242
3243 case ToolChain::CST_Libstdcxx:
3244 addLibStdCxxIncludePaths(DriverArgs, CC1Args);
3245 break;
3246 }
3247}
3248
3249void Generic_GCC::addSYCLIncludeArgs(const ArgList &DriverArgs,
3250 ArgStringList &CC1Args) const {
3251 SYCLInstallation->addSYCLIncludeArgs(DriverArgs, CC1Args);
3252}
3253
3254void
3255Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3256 llvm::opt::ArgStringList &CC1Args) const {
3257 const Driver &D = getDriver();
3258 std::string SysRoot = computeSysRoot();
3259 if (SysRoot.empty())
3260 SysRoot = llvm::sys::path::get_separator();
3261
3262 auto AddIncludePath = [&](StringRef Path, bool TargetDirRequired = false) {
3263 std::string Version = detectLibcxxVersion(IncludePath: Path);
3264 if (Version.empty())
3265 return false;
3266
3267 // First add the per-target include path if it exists.
3268 bool TargetDirExists = false;
3269 std::optional<std::string> TargetIncludeDir = getTargetSubDirPath(BaseDir: Path);
3270 if (TargetIncludeDir) {
3271 SmallString<128> TargetDir(*TargetIncludeDir);
3272 llvm::sys::path::append(path&: TargetDir, a: "c++", b: Version);
3273 if (D.getVFS().exists(Path: TargetDir)) {
3274 addSystemInclude(DriverArgs, CC1Args, Path: TargetDir);
3275 TargetDirExists = true;
3276 }
3277 }
3278 if (TargetDirRequired && !TargetDirExists)
3279 return false;
3280
3281 // Second add the generic one.
3282 SmallString<128> GenericDir(Path);
3283 llvm::sys::path::append(path&: GenericDir, a: "c++", b: Version);
3284 addSystemInclude(DriverArgs, CC1Args, Path: GenericDir);
3285 return true;
3286 };
3287
3288 // Android only uses the libc++ headers installed alongside the toolchain if
3289 // they contain an Android-specific target include path, otherwise they're
3290 // incompatible with the NDK libraries.
3291 SmallString<128> DriverIncludeDir(getDriver().Dir);
3292 llvm::sys::path::append(path&: DriverIncludeDir, a: "..", b: "include");
3293 if (AddIncludePath(DriverIncludeDir,
3294 /*TargetDirRequired=*/getTriple().isAndroid()))
3295 return;
3296 // If this is a development, non-installed, clang, libcxx will
3297 // not be found at ../include/c++ but it likely to be found at
3298 // one of the following two locations:
3299 SmallString<128> UsrLocalIncludeDir(SysRoot);
3300 llvm::sys::path::append(path&: UsrLocalIncludeDir, a: "usr", b: "local", c: "include");
3301 if (AddIncludePath(UsrLocalIncludeDir))
3302 return;
3303 SmallString<128> UsrIncludeDir(SysRoot);
3304 llvm::sys::path::append(path&: UsrIncludeDir, a: "usr", b: "include");
3305 if (AddIncludePath(UsrIncludeDir))
3306 return;
3307}
3308
3309static bool addLibStdCXXIncludePaths(llvm::vfs::FileSystem &vfs,
3310 Twine IncludeDir, StringRef Triple,
3311 Twine IncludeSuffix,
3312 const llvm::opt::ArgList &DriverArgs,
3313 llvm::opt::ArgStringList &CC1Args,
3314 bool DetectDebian = false) {
3315
3316 if (!vfs.exists(Path: IncludeDir))
3317 return false;
3318
3319 // Debian native gcc uses g++-multiarch-incdir.diff which uses
3320 // include/x86_64-linux-gnu/c++/10$IncludeSuffix instead of
3321 // include/c++/10/x86_64-linux-gnu$IncludeSuffix.
3322 std::string Dir = IncludeDir.str();
3323 StringRef Include =
3324 llvm::sys::path::parent_path(path: llvm::sys::path::parent_path(path: Dir));
3325 std::string Path =
3326 (Include + "/" + Triple + Dir.substr(pos: Include.size()) + IncludeSuffix)
3327 .str();
3328 if (DetectDebian && !vfs.exists(Path))
3329 return false;
3330
3331 // GPLUSPLUS_INCLUDE_DIR
3332 ToolChain::addSystemInclude(DriverArgs, CC1Args, Path: IncludeDir);
3333 // GPLUSPLUS_TOOL_INCLUDE_DIR. If Triple is not empty, add a target-dependent
3334 // include directory.
3335 if (DetectDebian)
3336 ToolChain::addSystemInclude(DriverArgs, CC1Args, Path);
3337 else if (!Triple.empty())
3338 ToolChain::addSystemInclude(DriverArgs, CC1Args,
3339 Path: IncludeDir + "/" + Triple + IncludeSuffix);
3340 // GPLUSPLUS_BACKWARD_INCLUDE_DIR
3341 ToolChain::addSystemInclude(DriverArgs, CC1Args, Path: IncludeDir + "/backward");
3342 return true;
3343}
3344
3345bool Generic_GCC::addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple,
3346 Twine IncludeSuffix,
3347 const llvm::opt::ArgList &DriverArgs,
3348 llvm::opt::ArgStringList &CC1Args,
3349 bool DetectDebian) const {
3350 return ::addLibStdCXXIncludePaths(vfs&: getVFS(), IncludeDir, Triple, IncludeSuffix,
3351 DriverArgs, CC1Args, DetectDebian);
3352}
3353
3354bool Generic_GCC::GCCInstallCandidate::addGCCLibStdCxxIncludePaths(
3355 llvm::vfs::FileSystem &vfs, const llvm::opt::ArgList &DriverArgs,
3356 llvm::opt::ArgStringList &CC1Args, StringRef DebianMultiarch) const {
3357
3358 // By default, look for the C++ headers in an include directory adjacent to
3359 // the lib directory of the GCC installation. Note that this is expect to be
3360 // equivalent to '/usr/include/c++/X.Y' in almost all cases.
3361 StringRef LibDir = getParentLibPath();
3362 StringRef InstallDir = getInstallPath();
3363 StringRef TripleStr = getTriple().str();
3364 const Multilib &Multilib = getMultilib();
3365 const GCCVersion &Version = getVersion();
3366
3367 // Try /../$triple/include/c++/$version (gcc --print-multiarch is not empty).
3368 if (::addLibStdCXXIncludePaths(
3369 vfs,
3370 IncludeDir: LibDir.str() + "/../" + TripleStr + "/include/c++/" + Version.Text,
3371 Triple: TripleStr, IncludeSuffix: Multilib.includeSuffix(), DriverArgs, CC1Args))
3372 return true;
3373
3374 // Try /gcc/$triple/$version/include/c++/ (gcc --print-multiarch is not
3375 // empty). Like above but for GCC built with
3376 // --enable-version-specific-runtime-libs.
3377 if (::addLibStdCXXIncludePaths(vfs,
3378 IncludeDir: LibDir.str() + "/gcc/" + TripleStr + "/" +
3379 Version.Text + "/include/c++/",
3380 Triple: TripleStr, IncludeSuffix: Multilib.includeSuffix(),
3381 DriverArgs, CC1Args))
3382 return true;
3383
3384 // Detect Debian g++-multiarch-incdir.diff.
3385 if (::addLibStdCXXIncludePaths(
3386 vfs, IncludeDir: LibDir.str() + "/../include/c++/" + Version.Text,
3387 Triple: DebianMultiarch, IncludeSuffix: Multilib.includeSuffix(), DriverArgs, CC1Args,
3388 /*Debian=*/DetectDebian: true))
3389 return true;
3390
3391 // Try /../include/c++/$version (gcc --print-multiarch is empty).
3392 if (::addLibStdCXXIncludePaths(
3393 vfs, IncludeDir: LibDir.str() + "/../include/c++/" + Version.Text, Triple: TripleStr,
3394 IncludeSuffix: Multilib.includeSuffix(), DriverArgs, CC1Args))
3395 return true;
3396
3397 // Otherwise, fall back on a bunch of options which don't use multiarch
3398 // layouts for simplicity.
3399 const std::string LibStdCXXIncludePathCandidates[] = {
3400 // Gentoo is weird and places its headers inside the GCC install,
3401 // so if the first attempt to find the headers fails, try these patterns.
3402 InstallDir.str() + "/include/g++-v" + Version.Text,
3403 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." +
3404 Version.MinorStr,
3405 InstallDir.str() + "/include/g++-v" + Version.MajorStr,
3406 };
3407
3408 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) {
3409 if (::addLibStdCXXIncludePaths(vfs, IncludeDir: IncludePath, Triple: TripleStr,
3410 IncludeSuffix: Multilib.includeSuffix(), DriverArgs,
3411 CC1Args))
3412 return true;
3413 }
3414 return false;
3415}
3416
3417bool Generic_GCC::GCCInstallationDetector::
3418 GCCInstallationHasLibStdcxxIncludePaths(
3419 const GCCInstallCandidate &GCCInstallation,
3420 const llvm::opt::ArgList &DriverArgs) const {
3421 StringRef DebianMultiarch =
3422 TripleToDebianMultiarch(GCCInstallation.getTriple());
3423
3424 // The following function checks for libstdc++ include paths and
3425 // adds them to the provided argument list. Here we just need the
3426 // check.
3427 llvm::opt::ArgStringList dummyCC1Args;
3428 return GCCInstallation.addGCCLibStdCxxIncludePaths(
3429 vfs&: D.getVFS(), DriverArgs, CC1Args&: dummyCC1Args, DebianMultiarch);
3430}
3431
3432bool Generic_GCC::addGCCLibStdCxxIncludePaths(
3433 const llvm::opt::ArgList &DriverArgs,
3434 llvm::opt::ArgStringList &CC1Args) const {
3435 assert(GCCInstallation.isValid());
3436
3437 // Detect Debian g++-multiarch-incdir.diff.
3438 StringRef DebianMultiarch =
3439 GCCInstallation.TripleToDebianMultiarch(GCCInstallation.getTriple());
3440
3441 return GCCInstallation.getSelectedInstallation().addGCCLibStdCxxIncludePaths(
3442 vfs&: getVFS(), DriverArgs, CC1Args, DebianMultiarch);
3443}
3444
3445void
3446Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
3447 llvm::opt::ArgStringList &CC1Args) const {
3448 if (!GCCInstallation.isValid())
3449 return;
3450
3451 GCCInstallation.getSelectedInstallation().addGCCLibStdCxxIncludePaths(
3452 vfs&: getVFS(), DriverArgs, CC1Args, DebianMultiarch: GCCInstallation.getTriple().str());
3453}
3454
3455llvm::opt::DerivedArgList *
3456Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args,
3457 StringRef BoundArch,
3458 Action::OffloadKind DeviceOffloadKind) const {
3459 if (DeviceOffloadKind != Action::OFK_SYCL &&
3460 DeviceOffloadKind != Action::OFK_OpenMP)
3461 return nullptr;
3462
3463 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs());
3464
3465 // Filter all the arguments we don't care passing to the offloading
3466 // toolchain as they can mess up with the creation of a shared library.
3467 const llvm::DenseSet<unsigned> OpenMPFiltered{
3468 options::OPT_shared, options::OPT_dynamic, options::OPT_static,
3469 options::OPT_fPIE, options::OPT_fno_PIE, options::OPT_fpie,
3470 options::OPT_fno_pie};
3471 for (auto *A : Args)
3472 if (DeviceOffloadKind != Action::OFK_OpenMP ||
3473 !OpenMPFiltered.contains(V: A->getOption().getID()))
3474 DAL->append(A);
3475
3476 // Request a shared library for CPU offloading. Given that these options
3477 // are decided implicitly, they do not refer to any base argument.
3478 const OptTable &Opts = getDriver().getOpts();
3479 if (DeviceOffloadKind == Action::OFK_OpenMP) {
3480 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opt: Opts.getOption(Opt: options::OPT_shared));
3481 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opt: Opts.getOption(Opt: options::OPT_fPIC));
3482 }
3483
3484 // Add the bound architecture to the arguments list if present.
3485 if (!BoundArch.empty()) {
3486 options::ID Opt =
3487 getTriple().isARM() || getTriple().isPPC() || getTriple().isAArch64()
3488 ? options::OPT_mcpu_EQ
3489 : options::OPT_march_EQ;
3490 DAL->eraseArg(Id: Opt);
3491 DAL->AddJoinedArg(BaseArg: nullptr, Opt: Opts.getOption(Opt), Value: BoundArch);
3492 }
3493 return DAL;
3494}
3495
3496void Generic_ELF::anchor() {}
3497
3498void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs,
3499 ArgStringList &CC1Args,
3500 Action::OffloadKind) const {
3501 if (!DriverArgs.hasFlag(Pos: options::OPT_fuse_init_array,
3502 Neg: options::OPT_fno_use_init_array, Default: true))
3503 CC1Args.push_back(Elt: "-fno-use-init-array");
3504}
3505