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/Mips.h" 13 #include "Arch/PPC.h" 14 #include "Arch/RISCV.h" 15 #include "Arch/Sparc.h" 16 #include "Arch/SystemZ.h" 17 #include "CommonArgs.h" 18 #include "Linux.h" 19 #include "clang/Config/config.h" // for GCC_INSTALL_PREFIX 20 #include "clang/Driver/Compilation.h" 21 #include "clang/Driver/Driver.h" 22 #include "clang/Driver/DriverDiagnostic.h" 23 #include "clang/Driver/Options.h" 24 #include "clang/Driver/Tool.h" 25 #include "clang/Driver/ToolChain.h" 26 #include "llvm/Option/ArgList.h" 27 #include "llvm/Support/CodeGen.h" 28 #include "llvm/Support/Path.h" 29 #include "llvm/Support/TargetParser.h" 30 #include "llvm/Support/VirtualFileSystem.h" 31 #include <system_error> 32 33 using namespace clang::driver; 34 using namespace clang::driver::toolchains; 35 using namespace clang; 36 using namespace llvm::opt; 37 38 using tools::addMultilibFlag; 39 using tools::addPathIfExists; 40 41 static bool forwardToGCC(const Option &O) { 42 // LinkerInput options have been forwarded. Don't duplicate. 43 if (O.hasFlag(options::LinkerInput)) 44 return false; 45 return O.matches(options::OPT_Link_Group) || O.hasFlag(options::LinkOption); 46 } 47 48 // Switch CPU names not recognized by GNU assembler to a close CPU that it does 49 // recognize, instead of a lower march from being picked in the absence of a cpu 50 // flag. 51 static void normalizeCPUNamesForAssembler(const ArgList &Args, 52 ArgStringList &CmdArgs) { 53 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) { 54 StringRef CPUArg(A->getValue()); 55 if (CPUArg.equals_insensitive("krait")) 56 CmdArgs.push_back("-mcpu=cortex-a15"); 57 else if (CPUArg.equals_insensitive("kryo")) 58 CmdArgs.push_back("-mcpu=cortex-a57"); 59 else 60 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ); 61 } 62 } 63 64 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA, 65 const InputInfo &Output, 66 const InputInfoList &Inputs, 67 const ArgList &Args, 68 const char *LinkingOutput) const { 69 const Driver &D = getToolChain().getDriver(); 70 ArgStringList CmdArgs; 71 72 for (const auto &A : Args) { 73 if (forwardToGCC(A->getOption())) { 74 // It is unfortunate that we have to claim here, as this means 75 // we will basically never report anything interesting for 76 // platforms using a generic gcc, even if we are just using gcc 77 // to get to the assembler. 78 A->claim(); 79 80 A->render(Args, CmdArgs); 81 } 82 } 83 84 RenderExtraToolArgs(JA, CmdArgs); 85 86 // If using a driver driver, force the arch. 87 if (getToolChain().getTriple().isOSDarwin()) { 88 CmdArgs.push_back("-arch"); 89 CmdArgs.push_back( 90 Args.MakeArgString(getToolChain().getDefaultUniversalArchName())); 91 } 92 93 // Try to force gcc to match the tool chain we want, if we recognize 94 // the arch. 95 // 96 // FIXME: The triple class should directly provide the information we want 97 // here. 98 switch (getToolChain().getArch()) { 99 default: 100 break; 101 case llvm::Triple::x86: 102 case llvm::Triple::ppc: 103 case llvm::Triple::ppcle: 104 CmdArgs.push_back("-m32"); 105 break; 106 case llvm::Triple::x86_64: 107 case llvm::Triple::ppc64: 108 case llvm::Triple::ppc64le: 109 CmdArgs.push_back("-m64"); 110 break; 111 case llvm::Triple::sparcel: 112 CmdArgs.push_back("-EL"); 113 break; 114 } 115 116 if (Output.isFilename()) { 117 CmdArgs.push_back("-o"); 118 CmdArgs.push_back(Output.getFilename()); 119 } else { 120 assert(Output.isNothing() && "Unexpected output"); 121 CmdArgs.push_back("-fsyntax-only"); 122 } 123 124 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 125 126 // Only pass -x if gcc will understand it; otherwise hope gcc 127 // understands the suffix correctly. The main use case this would go 128 // wrong in is for linker inputs if they happened to have an odd 129 // suffix; really the only way to get this to happen is a command 130 // like '-x foobar a.c' which will treat a.c like a linker input. 131 // 132 // FIXME: For the linker case specifically, can we safely convert 133 // inputs into '-Wl,' options? 134 for (const auto &II : Inputs) { 135 // Don't try to pass LLVM or AST inputs to a generic gcc. 136 if (types::isLLVMIR(II.getType())) 137 D.Diag(clang::diag::err_drv_no_linker_llvm_support) 138 << getToolChain().getTripleString(); 139 else if (II.getType() == types::TY_AST) 140 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString(); 141 else if (II.getType() == types::TY_ModuleFile) 142 D.Diag(diag::err_drv_no_module_support) 143 << getToolChain().getTripleString(); 144 145 if (types::canTypeBeUserSpecified(II.getType())) { 146 CmdArgs.push_back("-x"); 147 CmdArgs.push_back(types::getTypeName(II.getType())); 148 } 149 150 if (II.isFilename()) 151 CmdArgs.push_back(II.getFilename()); 152 else { 153 const Arg &A = II.getInputArg(); 154 155 // Reverse translate some rewritten options. 156 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) { 157 CmdArgs.push_back("-lstdc++"); 158 continue; 159 } 160 161 // Don't render as input, we need gcc to do the translations. 162 A.render(Args, CmdArgs); 163 } 164 } 165 166 const std::string &customGCCName = D.getCCCGenericGCCName(); 167 const char *GCCName; 168 if (!customGCCName.empty()) 169 GCCName = customGCCName.c_str(); 170 else if (D.CCCIsCXX()) { 171 GCCName = "g++"; 172 } else 173 GCCName = "gcc"; 174 175 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName)); 176 C.addCommand(std::make_unique<Command>(JA, *this, 177 ResponseFileSupport::AtFileCurCP(), 178 Exec, CmdArgs, Inputs, Output)); 179 } 180 181 void tools::gcc::Preprocessor::RenderExtraToolArgs( 182 const JobAction &JA, ArgStringList &CmdArgs) const { 183 CmdArgs.push_back("-E"); 184 } 185 186 void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA, 187 ArgStringList &CmdArgs) const { 188 const Driver &D = getToolChain().getDriver(); 189 190 switch (JA.getType()) { 191 // If -flto, etc. are present then make sure not to force assembly output. 192 case types::TY_LLVM_IR: 193 case types::TY_LTO_IR: 194 case types::TY_LLVM_BC: 195 case types::TY_LTO_BC: 196 CmdArgs.push_back("-c"); 197 break; 198 // We assume we've got an "integrated" assembler in that gcc will produce an 199 // object file itself. 200 case types::TY_Object: 201 CmdArgs.push_back("-c"); 202 break; 203 case types::TY_PP_Asm: 204 CmdArgs.push_back("-S"); 205 break; 206 case types::TY_Nothing: 207 CmdArgs.push_back("-fsyntax-only"); 208 break; 209 default: 210 D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType()); 211 } 212 } 213 214 void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA, 215 ArgStringList &CmdArgs) const { 216 // The types are (hopefully) good enough. 217 } 218 219 // On Arm the endianness of the output file is determined by the target and 220 // can be overridden by the pseudo-target flags '-mlittle-endian'/'-EL' and 221 // '-mbig-endian'/'-EB'. Unlike other targets the flag does not result in a 222 // normalized triple so we must handle the flag here. 223 static bool isArmBigEndian(const llvm::Triple &Triple, 224 const ArgList &Args) { 225 bool IsBigEndian = false; 226 switch (Triple.getArch()) { 227 case llvm::Triple::armeb: 228 case llvm::Triple::thumbeb: 229 IsBigEndian = true; 230 LLVM_FALLTHROUGH; 231 case llvm::Triple::arm: 232 case llvm::Triple::thumb: 233 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian, 234 options::OPT_mbig_endian)) 235 IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian); 236 break; 237 default: 238 break; 239 } 240 return IsBigEndian; 241 } 242 243 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) { 244 switch (T.getArch()) { 245 case llvm::Triple::x86: 246 if (T.isOSIAMCU()) 247 return "elf_iamcu"; 248 return "elf_i386"; 249 case llvm::Triple::aarch64: 250 return "aarch64linux"; 251 case llvm::Triple::aarch64_be: 252 return "aarch64linuxb"; 253 case llvm::Triple::arm: 254 case llvm::Triple::thumb: 255 case llvm::Triple::armeb: 256 case llvm::Triple::thumbeb: 257 return isArmBigEndian(T, Args) ? "armelfb_linux_eabi" : "armelf_linux_eabi"; 258 case llvm::Triple::m68k: 259 return "m68kelf"; 260 case llvm::Triple::ppc: 261 if (T.isOSLinux()) 262 return "elf32ppclinux"; 263 return "elf32ppc"; 264 case llvm::Triple::ppcle: 265 if (T.isOSLinux()) 266 return "elf32lppclinux"; 267 return "elf32lppc"; 268 case llvm::Triple::ppc64: 269 return "elf64ppc"; 270 case llvm::Triple::ppc64le: 271 return "elf64lppc"; 272 case llvm::Triple::riscv32: 273 return "elf32lriscv"; 274 case llvm::Triple::riscv64: 275 return "elf64lriscv"; 276 case llvm::Triple::sparc: 277 case llvm::Triple::sparcel: 278 return "elf32_sparc"; 279 case llvm::Triple::sparcv9: 280 return "elf64_sparc"; 281 case llvm::Triple::mips: 282 return "elf32btsmip"; 283 case llvm::Triple::mipsel: 284 return "elf32ltsmip"; 285 case llvm::Triple::mips64: 286 if (tools::mips::hasMipsAbiArg(Args, "n32") || 287 T.getEnvironment() == llvm::Triple::GNUABIN32) 288 return "elf32btsmipn32"; 289 return "elf64btsmip"; 290 case llvm::Triple::mips64el: 291 if (tools::mips::hasMipsAbiArg(Args, "n32") || 292 T.getEnvironment() == llvm::Triple::GNUABIN32) 293 return "elf32ltsmipn32"; 294 return "elf64ltsmip"; 295 case llvm::Triple::systemz: 296 return "elf64_s390"; 297 case llvm::Triple::x86_64: 298 if (T.isX32()) 299 return "elf32_x86_64"; 300 return "elf_x86_64"; 301 case llvm::Triple::ve: 302 return "elf64ve"; 303 case llvm::Triple::csky: 304 return "cskyelf_linux"; 305 default: 306 return nullptr; 307 } 308 } 309 310 static bool getPIE(const ArgList &Args, const ToolChain &TC) { 311 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_static) || 312 Args.hasArg(options::OPT_r) || Args.hasArg(options::OPT_static_pie)) 313 return false; 314 315 Arg *A = Args.getLastArg(options::OPT_pie, options::OPT_no_pie, 316 options::OPT_nopie); 317 if (!A) 318 return TC.isPIEDefault(Args); 319 return A->getOption().matches(options::OPT_pie); 320 } 321 322 static bool getStaticPIE(const ArgList &Args, const ToolChain &TC) { 323 bool HasStaticPIE = Args.hasArg(options::OPT_static_pie); 324 // -no-pie is an alias for -nopie. So, handling -nopie takes care of 325 // -no-pie as well. 326 if (HasStaticPIE && Args.hasArg(options::OPT_nopie)) { 327 const Driver &D = TC.getDriver(); 328 const llvm::opt::OptTable &Opts = D.getOpts(); 329 const char *StaticPIEName = Opts.getOptionName(options::OPT_static_pie); 330 const char *NoPIEName = Opts.getOptionName(options::OPT_nopie); 331 D.Diag(diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName; 332 } 333 return HasStaticPIE; 334 } 335 336 static bool getStatic(const ArgList &Args) { 337 return Args.hasArg(options::OPT_static) && 338 !Args.hasArg(options::OPT_static_pie); 339 } 340 341 void tools::gnutools::StaticLibTool::ConstructJob( 342 Compilation &C, const JobAction &JA, const InputInfo &Output, 343 const InputInfoList &Inputs, const ArgList &Args, 344 const char *LinkingOutput) const { 345 const Driver &D = getToolChain().getDriver(); 346 347 // Silence warning for "clang -g foo.o -o foo" 348 Args.ClaimAllArgs(options::OPT_g_Group); 349 // and "clang -emit-llvm foo.o -o foo" 350 Args.ClaimAllArgs(options::OPT_emit_llvm); 351 // and for "clang -w foo.o -o foo". Other warning options are already 352 // handled somewhere else. 353 Args.ClaimAllArgs(options::OPT_w); 354 // Silence warnings when linking C code with a C++ '-stdlib' argument. 355 Args.ClaimAllArgs(options::OPT_stdlib_EQ); 356 357 // ar tool command "llvm-ar <options> <output_file> <input_files>". 358 ArgStringList CmdArgs; 359 // Create and insert file members with a deterministic index. 360 CmdArgs.push_back("rcsD"); 361 CmdArgs.push_back(Output.getFilename()); 362 363 for (const auto &II : Inputs) { 364 if (II.isFilename()) { 365 CmdArgs.push_back(II.getFilename()); 366 } 367 } 368 369 // Delete old output archive file if it already exists before generating a new 370 // archive file. 371 auto OutputFileName = Output.getFilename(); 372 if (Output.isFilename() && llvm::sys::fs::exists(OutputFileName)) { 373 if (std::error_code EC = llvm::sys::fs::remove(OutputFileName)) { 374 D.Diag(diag::err_drv_unable_to_remove_file) << EC.message(); 375 return; 376 } 377 } 378 379 const char *Exec = Args.MakeArgString(getToolChain().GetStaticLibToolPath()); 380 C.addCommand(std::make_unique<Command>(JA, *this, 381 ResponseFileSupport::AtFileCurCP(), 382 Exec, CmdArgs, Inputs, Output)); 383 } 384 385 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA, 386 const InputInfo &Output, 387 const InputInfoList &Inputs, 388 const ArgList &Args, 389 const char *LinkingOutput) const { 390 // FIXME: The Linker class constructor takes a ToolChain and not a 391 // Generic_ELF, so the static_cast might return a reference to a invalid 392 // instance (see PR45061). Ideally, the Linker constructor needs to take a 393 // Generic_ELF instead. 394 const toolchains::Generic_ELF &ToolChain = 395 static_cast<const toolchains::Generic_ELF &>(getToolChain()); 396 const Driver &D = ToolChain.getDriver(); 397 398 const llvm::Triple &Triple = getToolChain().getEffectiveTriple(); 399 400 const llvm::Triple::ArchType Arch = ToolChain.getArch(); 401 const bool isAndroid = ToolChain.getTriple().isAndroid(); 402 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU(); 403 const bool IsVE = ToolChain.getTriple().isVE(); 404 const bool IsPIE = getPIE(Args, ToolChain); 405 const bool IsStaticPIE = getStaticPIE(Args, ToolChain); 406 const bool IsStatic = getStatic(Args); 407 const bool HasCRTBeginEndFiles = 408 ToolChain.getTriple().hasEnvironment() || 409 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies); 410 411 ArgStringList CmdArgs; 412 413 // Silence warning for "clang -g foo.o -o foo" 414 Args.ClaimAllArgs(options::OPT_g_Group); 415 // and "clang -emit-llvm foo.o -o foo" 416 Args.ClaimAllArgs(options::OPT_emit_llvm); 417 // and for "clang -w foo.o -o foo". Other warning options are already 418 // handled somewhere else. 419 Args.ClaimAllArgs(options::OPT_w); 420 421 if (!D.SysRoot.empty()) 422 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 423 424 if (IsPIE) 425 CmdArgs.push_back("-pie"); 426 427 if (IsStaticPIE) { 428 CmdArgs.push_back("-static"); 429 CmdArgs.push_back("-pie"); 430 CmdArgs.push_back("--no-dynamic-linker"); 431 CmdArgs.push_back("-z"); 432 CmdArgs.push_back("text"); 433 } 434 435 if (Args.hasArg(options::OPT_rdynamic)) 436 CmdArgs.push_back("-export-dynamic"); 437 438 if (Args.hasArg(options::OPT_s)) 439 CmdArgs.push_back("-s"); 440 441 if (Triple.isARM() || Triple.isThumb() || Triple.isAArch64()) { 442 bool IsBigEndian = isArmBigEndian(Triple, Args); 443 if (IsBigEndian) 444 arm::appendBE8LinkFlag(Args, CmdArgs, Triple); 445 IsBigEndian = IsBigEndian || Arch == llvm::Triple::aarch64_be; 446 CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL"); 447 } 448 449 // Most Android ARM64 targets should enable the linker fix for erratum 450 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag. 451 if (Arch == llvm::Triple::aarch64 && isAndroid) { 452 std::string CPU = getCPUName(D, Args, Triple); 453 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53") 454 CmdArgs.push_back("--fix-cortex-a53-843419"); 455 } 456 457 ToolChain.addExtraOpts(CmdArgs); 458 459 CmdArgs.push_back("--eh-frame-hdr"); 460 461 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) { 462 CmdArgs.push_back("-m"); 463 CmdArgs.push_back(LDMOption); 464 } else { 465 D.Diag(diag::err_target_unknown_triple) << Triple.str(); 466 return; 467 } 468 469 if (Args.hasArg(options::OPT_shared)) 470 CmdArgs.push_back("-shared"); 471 472 if (IsStatic) { 473 CmdArgs.push_back("-static"); 474 } else { 475 if (Args.hasArg(options::OPT_rdynamic)) 476 CmdArgs.push_back("-export-dynamic"); 477 478 if (!Args.hasArg(options::OPT_shared) && !IsStaticPIE) { 479 CmdArgs.push_back("-dynamic-linker"); 480 CmdArgs.push_back(Args.MakeArgString(Twine(D.DyldPrefix) + 481 ToolChain.getDynamicLinker(Args))); 482 } 483 } 484 485 CmdArgs.push_back("-o"); 486 CmdArgs.push_back(Output.getFilename()); 487 488 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles, 489 options::OPT_r)) { 490 if (!isAndroid && !IsIAMCU) { 491 const char *crt1 = nullptr; 492 if (!Args.hasArg(options::OPT_shared)) { 493 if (Args.hasArg(options::OPT_pg)) 494 crt1 = "gcrt1.o"; 495 else if (IsPIE) 496 crt1 = "Scrt1.o"; 497 else if (IsStaticPIE) 498 crt1 = "rcrt1.o"; 499 else 500 crt1 = "crt1.o"; 501 } 502 if (crt1) 503 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1))); 504 505 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o"))); 506 } 507 508 if (IsVE) { 509 CmdArgs.push_back("-z"); 510 CmdArgs.push_back("max-page-size=0x4000000"); 511 } 512 513 if (IsIAMCU) 514 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o"))); 515 else if (HasCRTBeginEndFiles) { 516 std::string P; 517 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT && 518 !isAndroid) { 519 std::string crtbegin = ToolChain.getCompilerRT(Args, "crtbegin", 520 ToolChain::FT_Object); 521 if (ToolChain.getVFS().exists(crtbegin)) 522 P = crtbegin; 523 } 524 if (P.empty()) { 525 const char *crtbegin; 526 if (Args.hasArg(options::OPT_shared)) 527 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o"; 528 else if (IsStatic) 529 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o"; 530 else if (IsPIE || IsStaticPIE) 531 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o"; 532 else 533 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o"; 534 P = ToolChain.GetFilePath(crtbegin); 535 } 536 CmdArgs.push_back(Args.MakeArgString(P)); 537 } 538 539 // Add crtfastmath.o if available and fast math is enabled. 540 ToolChain.addFastMathRuntimeIfAvailable(Args, CmdArgs); 541 } 542 543 Args.AddAllArgs(CmdArgs, options::OPT_L); 544 Args.AddAllArgs(CmdArgs, options::OPT_u); 545 546 ToolChain.AddFilePathLibArgs(Args, CmdArgs); 547 548 if (D.isUsingLTO()) { 549 assert(!Inputs.empty() && "Must have at least one input."); 550 addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs[0], 551 D.getLTOMode() == LTOK_Thin); 552 } 553 554 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle)) 555 CmdArgs.push_back("--no-demangle"); 556 557 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs); 558 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs); 559 addLinkerCompressDebugSectionsOption(ToolChain, Args, CmdArgs); 560 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA); 561 562 addHIPRuntimeLibArgs(ToolChain, Args, CmdArgs); 563 564 // The profile runtime also needs access to system libraries. 565 getToolChain().addProfileRTLibs(Args, CmdArgs); 566 567 if (D.CCCIsCXX() && 568 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs, 569 options::OPT_r)) { 570 if (ToolChain.ShouldLinkCXXStdlib(Args)) { 571 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) && 572 !Args.hasArg(options::OPT_static); 573 if (OnlyLibstdcxxStatic) 574 CmdArgs.push_back("-Bstatic"); 575 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs); 576 if (OnlyLibstdcxxStatic) 577 CmdArgs.push_back("-Bdynamic"); 578 } 579 CmdArgs.push_back("-lm"); 580 } 581 582 // If we are linking for the device all symbols should be bound locally. The 583 // symbols are already protected which makes this redundant. This is only 584 // necessary to work around a problem in bfd. 585 // TODO: Remove this once 'lld' becomes the only linker for offloading. 586 if (JA.isDeviceOffloading(Action::OFK_OpenMP)) 587 CmdArgs.push_back("-Bsymbolic"); 588 589 // Silence warnings when linking C code with a C++ '-stdlib' argument. 590 Args.ClaimAllArgs(options::OPT_stdlib_EQ); 591 592 // Additional linker set-up and flags for Fortran. This is required in order 593 // to generate executables. As Fortran runtime depends on the C runtime, 594 // these dependencies need to be listed before the C runtime below (i.e. 595 // AddRuntTimeLibs). 596 // 597 // NOTE: Generating executables by Flang is considered an "experimental" 598 // feature and hence this is guarded with a command line option. 599 // TODO: Make this work unconditionally once Flang is mature enough. 600 if (D.IsFlangMode() && Args.hasArg(options::OPT_flang_experimental_exec)) { 601 addFortranRuntimeLibraryPath(ToolChain, Args, CmdArgs); 602 addFortranRuntimeLibs(CmdArgs); 603 CmdArgs.push_back("-lm"); 604 } 605 606 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_r)) { 607 if (!Args.hasArg(options::OPT_nodefaultlibs)) { 608 if (IsStatic || IsStaticPIE) 609 CmdArgs.push_back("--start-group"); 610 611 if (NeedsSanitizerDeps) 612 linkSanitizerRuntimeDeps(ToolChain, CmdArgs); 613 614 if (NeedsXRayDeps) 615 linkXRayRuntimeDeps(ToolChain, CmdArgs); 616 617 bool WantPthread = Args.hasArg(options::OPT_pthread) || 618 Args.hasArg(options::OPT_pthreads); 619 620 // Use the static OpenMP runtime with -static-openmp 621 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) && 622 !Args.hasArg(options::OPT_static); 623 624 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that 625 // require librt. Most modern Linux platforms do, but some may not. 626 if (addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP, 627 JA.isHostOffloading(Action::OFK_OpenMP), 628 /* GompNeedsRT= */ true)) 629 // OpenMP runtimes implies pthreads when using the GNU toolchain. 630 // FIXME: Does this really make sense for all GNU toolchains? 631 WantPthread = true; 632 633 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 634 635 if (WantPthread && !isAndroid) 636 CmdArgs.push_back("-lpthread"); 637 638 if (Args.hasArg(options::OPT_fsplit_stack)) 639 CmdArgs.push_back("--wrap=pthread_create"); 640 641 if (!Args.hasArg(options::OPT_nolibc)) 642 CmdArgs.push_back("-lc"); 643 644 // Add IAMCU specific libs, if needed. 645 if (IsIAMCU) 646 CmdArgs.push_back("-lgloss"); 647 648 if (IsStatic || IsStaticPIE) 649 CmdArgs.push_back("--end-group"); 650 else 651 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 652 653 // Add IAMCU specific libs (outside the group), if needed. 654 if (IsIAMCU) { 655 CmdArgs.push_back("--as-needed"); 656 CmdArgs.push_back("-lsoftfp"); 657 CmdArgs.push_back("--no-as-needed"); 658 } 659 } 660 661 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) { 662 if (HasCRTBeginEndFiles) { 663 std::string P; 664 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT && 665 !isAndroid) { 666 std::string crtend = ToolChain.getCompilerRT(Args, "crtend", 667 ToolChain::FT_Object); 668 if (ToolChain.getVFS().exists(crtend)) 669 P = crtend; 670 } 671 if (P.empty()) { 672 const char *crtend; 673 if (Args.hasArg(options::OPT_shared)) 674 crtend = isAndroid ? "crtend_so.o" : "crtendS.o"; 675 else if (IsPIE || IsStaticPIE) 676 crtend = isAndroid ? "crtend_android.o" : "crtendS.o"; 677 else 678 crtend = isAndroid ? "crtend_android.o" : "crtend.o"; 679 P = ToolChain.GetFilePath(crtend); 680 } 681 CmdArgs.push_back(Args.MakeArgString(P)); 682 } 683 if (!isAndroid) 684 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o"))); 685 } 686 } 687 688 Args.AddAllArgs(CmdArgs, options::OPT_T); 689 690 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath()); 691 C.addCommand(std::make_unique<Command>(JA, *this, 692 ResponseFileSupport::AtFileCurCP(), 693 Exec, CmdArgs, Inputs, Output)); 694 } 695 696 void tools::gnutools::Assembler::ConstructJob(Compilation &C, 697 const JobAction &JA, 698 const InputInfo &Output, 699 const InputInfoList &Inputs, 700 const ArgList &Args, 701 const char *LinkingOutput) const { 702 const auto &D = getToolChain().getDriver(); 703 704 claimNoWarnArgs(Args); 705 706 ArgStringList CmdArgs; 707 708 llvm::Reloc::Model RelocationModel; 709 unsigned PICLevel; 710 bool IsPIE; 711 const char *DefaultAssembler = "as"; 712 std::tie(RelocationModel, PICLevel, IsPIE) = 713 ParsePICArgs(getToolChain(), Args); 714 715 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) { 716 if (A->getOption().getID() == options::OPT_gz) { 717 CmdArgs.push_back("--compress-debug-sections"); 718 } else { 719 StringRef Value = A->getValue(); 720 if (Value == "none" || Value == "zlib") { 721 CmdArgs.push_back( 722 Args.MakeArgString("--compress-debug-sections=" + Twine(Value))); 723 } else { 724 D.Diag(diag::err_drv_unsupported_option_argument) 725 << A->getOption().getName() << Value; 726 } 727 } 728 } 729 730 switch (getToolChain().getArch()) { 731 default: 732 break; 733 // Add --32/--64 to make sure we get the format we want. 734 // This is incomplete 735 case llvm::Triple::x86: 736 CmdArgs.push_back("--32"); 737 break; 738 case llvm::Triple::x86_64: 739 if (getToolChain().getTriple().isX32()) 740 CmdArgs.push_back("--x32"); 741 else 742 CmdArgs.push_back("--64"); 743 break; 744 case llvm::Triple::ppc: { 745 CmdArgs.push_back("-a32"); 746 CmdArgs.push_back("-mppc"); 747 CmdArgs.push_back("-mbig-endian"); 748 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 749 getCPUName(D, Args, getToolChain().getTriple()))); 750 break; 751 } 752 case llvm::Triple::ppcle: { 753 CmdArgs.push_back("-a32"); 754 CmdArgs.push_back("-mppc"); 755 CmdArgs.push_back("-mlittle-endian"); 756 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 757 getCPUName(D, Args, getToolChain().getTriple()))); 758 break; 759 } 760 case llvm::Triple::ppc64: { 761 CmdArgs.push_back("-a64"); 762 CmdArgs.push_back("-mppc64"); 763 CmdArgs.push_back("-mbig-endian"); 764 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 765 getCPUName(D, Args, getToolChain().getTriple()))); 766 break; 767 } 768 case llvm::Triple::ppc64le: { 769 CmdArgs.push_back("-a64"); 770 CmdArgs.push_back("-mppc64"); 771 CmdArgs.push_back("-mlittle-endian"); 772 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 773 getCPUName(D, Args, getToolChain().getTriple()))); 774 break; 775 } 776 case llvm::Triple::riscv32: 777 case llvm::Triple::riscv64: { 778 StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple()); 779 CmdArgs.push_back("-mabi"); 780 CmdArgs.push_back(ABIName.data()); 781 StringRef MArchName = riscv::getRISCVArch(Args, getToolChain().getTriple()); 782 CmdArgs.push_back("-march"); 783 CmdArgs.push_back(MArchName.data()); 784 if (!Args.hasFlag(options::OPT_mrelax, options::OPT_mno_relax, true)) 785 Args.addOptOutFlag(CmdArgs, options::OPT_mrelax, options::OPT_mno_relax); 786 break; 787 } 788 case llvm::Triple::sparc: 789 case llvm::Triple::sparcel: { 790 CmdArgs.push_back("-32"); 791 std::string CPU = getCPUName(D, Args, getToolChain().getTriple()); 792 CmdArgs.push_back( 793 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 794 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 795 break; 796 } 797 case llvm::Triple::sparcv9: { 798 CmdArgs.push_back("-64"); 799 std::string CPU = getCPUName(D, Args, getToolChain().getTriple()); 800 CmdArgs.push_back( 801 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 802 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 803 break; 804 } 805 case llvm::Triple::arm: 806 case llvm::Triple::armeb: 807 case llvm::Triple::thumb: 808 case llvm::Triple::thumbeb: { 809 const llvm::Triple &Triple2 = getToolChain().getTriple(); 810 CmdArgs.push_back(isArmBigEndian(Triple2, Args) ? "-EB" : "-EL"); 811 switch (Triple2.getSubArch()) { 812 case llvm::Triple::ARMSubArch_v7: 813 CmdArgs.push_back("-mfpu=neon"); 814 break; 815 case llvm::Triple::ARMSubArch_v8: 816 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8"); 817 break; 818 default: 819 break; 820 } 821 822 switch (arm::getARMFloatABI(getToolChain(), Args)) { 823 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!"); 824 case arm::FloatABI::Soft: 825 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft")); 826 break; 827 case arm::FloatABI::SoftFP: 828 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp")); 829 break; 830 case arm::FloatABI::Hard: 831 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard")); 832 break; 833 } 834 835 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 836 normalizeCPUNamesForAssembler(Args, CmdArgs); 837 838 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ); 839 break; 840 } 841 case llvm::Triple::aarch64: 842 case llvm::Triple::aarch64_be: { 843 CmdArgs.push_back( 844 getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL"); 845 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 846 normalizeCPUNamesForAssembler(Args, CmdArgs); 847 848 break; 849 } 850 case llvm::Triple::mips: 851 case llvm::Triple::mipsel: 852 case llvm::Triple::mips64: 853 case llvm::Triple::mips64el: { 854 StringRef CPUName; 855 StringRef ABIName; 856 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName); 857 ABIName = mips::getGnuCompatibleMipsABIName(ABIName); 858 859 CmdArgs.push_back("-march"); 860 CmdArgs.push_back(CPUName.data()); 861 862 CmdArgs.push_back("-mabi"); 863 CmdArgs.push_back(ABIName.data()); 864 865 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE, 866 // or -mshared (not implemented) is in effect. 867 if (RelocationModel == llvm::Reloc::Static) 868 CmdArgs.push_back("-mno-shared"); 869 870 // LLVM doesn't support -mplt yet and acts as if it is always given. 871 // However, -mplt has no effect with the N64 ABI. 872 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls)) 873 CmdArgs.push_back("-call_nonpic"); 874 875 if (getToolChain().getTriple().isLittleEndian()) 876 CmdArgs.push_back("-EL"); 877 else 878 CmdArgs.push_back("-EB"); 879 880 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) { 881 if (StringRef(A->getValue()) == "2008") 882 CmdArgs.push_back(Args.MakeArgString("-mnan=2008")); 883 } 884 885 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default. 886 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx, 887 options::OPT_mfp64)) { 888 A->claim(); 889 A->render(Args, CmdArgs); 890 } else if (mips::shouldUseFPXX( 891 Args, getToolChain().getTriple(), CPUName, ABIName, 892 mips::getMipsFloatABI(getToolChain().getDriver(), Args, 893 getToolChain().getTriple()))) 894 CmdArgs.push_back("-mfpxx"); 895 896 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of 897 // -mno-mips16 is actually -no-mips16. 898 if (Arg *A = 899 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) { 900 if (A->getOption().matches(options::OPT_mips16)) { 901 A->claim(); 902 A->render(Args, CmdArgs); 903 } else { 904 A->claim(); 905 CmdArgs.push_back("-no-mips16"); 906 } 907 } 908 909 Args.AddLastArg(CmdArgs, options::OPT_mmicromips, 910 options::OPT_mno_micromips); 911 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp); 912 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2); 913 914 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) { 915 // Do not use AddLastArg because not all versions of MIPS assembler 916 // support -mmsa / -mno-msa options. 917 if (A->getOption().matches(options::OPT_mmsa)) 918 CmdArgs.push_back(Args.MakeArgString("-mmsa")); 919 } 920 921 Args.AddLastArg(CmdArgs, options::OPT_mhard_float, 922 options::OPT_msoft_float); 923 924 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float, 925 options::OPT_msingle_float); 926 927 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg, 928 options::OPT_mno_odd_spreg); 929 930 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 931 break; 932 } 933 case llvm::Triple::systemz: { 934 // Always pass an -march option, since our default of z10 is later 935 // than the GNU assembler's default. 936 std::string CPUName = systemz::getSystemZTargetCPU(Args); 937 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName)); 938 break; 939 } 940 case llvm::Triple::ve: 941 DefaultAssembler = "nas"; 942 } 943 944 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ, 945 options::OPT_fdebug_prefix_map_EQ)) { 946 StringRef Map = A->getValue(); 947 if (!Map.contains('=')) 948 D.Diag(diag::err_drv_invalid_argument_to_option) 949 << Map << A->getOption().getName(); 950 else { 951 CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map")); 952 CmdArgs.push_back(Args.MakeArgString(Map)); 953 } 954 A->claim(); 955 } 956 957 Args.AddAllArgs(CmdArgs, options::OPT_I); 958 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 959 960 CmdArgs.push_back("-o"); 961 CmdArgs.push_back(Output.getFilename()); 962 963 for (const auto &II : Inputs) 964 CmdArgs.push_back(II.getFilename()); 965 966 const char *Exec = 967 Args.MakeArgString(getToolChain().GetProgramPath(DefaultAssembler)); 968 C.addCommand(std::make_unique<Command>(JA, *this, 969 ResponseFileSupport::AtFileCurCP(), 970 Exec, CmdArgs, Inputs, Output)); 971 972 // Handle the debug info splitting at object creation time if we're 973 // creating an object. 974 // TODO: Currently only works on linux with newer objcopy. 975 if (Args.hasArg(options::OPT_gsplit_dwarf) && 976 getToolChain().getTriple().isOSLinux()) 977 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, 978 SplitDebugName(JA, Args, Inputs[0], Output)); 979 } 980 981 namespace { 982 // Filter to remove Multilibs that don't exist as a suffix to Path 983 class FilterNonExistent { 984 StringRef Base, File; 985 llvm::vfs::FileSystem &VFS; 986 987 public: 988 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS) 989 : Base(Base), File(File), VFS(VFS) {} 990 bool operator()(const Multilib &M) { 991 return !VFS.exists(Base + M.gccSuffix() + File); 992 } 993 }; 994 } // end anonymous namespace 995 996 static bool isSoftFloatABI(const ArgList &Args) { 997 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float, 998 options::OPT_mfloat_abi_EQ); 999 if (!A) 1000 return false; 1001 1002 return A->getOption().matches(options::OPT_msoft_float) || 1003 (A->getOption().matches(options::OPT_mfloat_abi_EQ) && 1004 A->getValue() == StringRef("soft")); 1005 } 1006 1007 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) { 1008 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb; 1009 } 1010 1011 static bool isMipsEL(llvm::Triple::ArchType Arch) { 1012 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el; 1013 } 1014 1015 static bool isMips16(const ArgList &Args) { 1016 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16); 1017 return A && A->getOption().matches(options::OPT_mips16); 1018 } 1019 1020 static bool isMicroMips(const ArgList &Args) { 1021 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips); 1022 return A && A->getOption().matches(options::OPT_mmicromips); 1023 } 1024 1025 static bool isMSP430(llvm::Triple::ArchType Arch) { 1026 return Arch == llvm::Triple::msp430; 1027 } 1028 1029 static Multilib makeMultilib(StringRef commonSuffix) { 1030 return Multilib(commonSuffix, commonSuffix, commonSuffix); 1031 } 1032 1033 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags, 1034 FilterNonExistent &NonExistent, 1035 DetectedMultilibs &Result) { 1036 // Check for Code Sourcery toolchain multilibs 1037 MultilibSet CSMipsMultilibs; 1038 { 1039 auto MArchMips16 = makeMultilib("/mips16").flag("+m32").flag("+mips16"); 1040 1041 auto MArchMicroMips = 1042 makeMultilib("/micromips").flag("+m32").flag("+mmicromips"); 1043 1044 auto MArchDefault = makeMultilib("").flag("-mips16").flag("-mmicromips"); 1045 1046 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc"); 1047 1048 auto SoftFloat = makeMultilib("/soft-float").flag("+msoft-float"); 1049 1050 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008"); 1051 1052 auto DefaultFloat = 1053 makeMultilib("").flag("-msoft-float").flag("-mnan=2008"); 1054 1055 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL"); 1056 1057 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 1058 1059 // Note that this one's osSuffix is "" 1060 auto MAbi64 = makeMultilib("") 1061 .gccSuffix("/64") 1062 .includeSuffix("/64") 1063 .flag("+mabi=n64") 1064 .flag("-mabi=n32") 1065 .flag("-m32"); 1066 1067 CSMipsMultilibs = 1068 MultilibSet() 1069 .Either(MArchMips16, MArchMicroMips, MArchDefault) 1070 .Maybe(UCLibc) 1071 .Either(SoftFloat, Nan2008, DefaultFloat) 1072 .FilterOut("/micromips/nan2008") 1073 .FilterOut("/mips16/nan2008") 1074 .Either(BigEndian, LittleEndian) 1075 .Maybe(MAbi64) 1076 .FilterOut("/mips16.*/64") 1077 .FilterOut("/micromips.*/64") 1078 .FilterOut(NonExistent) 1079 .setIncludeDirsCallback([](const Multilib &M) { 1080 std::vector<std::string> Dirs({"/include"}); 1081 if (StringRef(M.includeSuffix()).startswith("/uclibc")) 1082 Dirs.push_back( 1083 "/../../../../mips-linux-gnu/libc/uclibc/usr/include"); 1084 else 1085 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include"); 1086 return Dirs; 1087 }); 1088 } 1089 1090 MultilibSet DebianMipsMultilibs; 1091 { 1092 Multilib MAbiN32 = 1093 Multilib().gccSuffix("/n32").includeSuffix("/n32").flag("+mabi=n32"); 1094 1095 Multilib M64 = Multilib() 1096 .gccSuffix("/64") 1097 .includeSuffix("/64") 1098 .flag("+m64") 1099 .flag("-m32") 1100 .flag("-mabi=n32"); 1101 1102 Multilib M32 = 1103 Multilib().gccSuffix("/32").flag("-m64").flag("+m32").flag("-mabi=n32"); 1104 1105 DebianMipsMultilibs = 1106 MultilibSet().Either(M32, M64, MAbiN32).FilterOut(NonExistent); 1107 } 1108 1109 // Sort candidates. Toolchain that best meets the directories tree goes first. 1110 // Then select the first toolchains matches command line flags. 1111 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs}; 1112 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size()) 1113 std::iter_swap(Candidates, Candidates + 1); 1114 for (const MultilibSet *Candidate : Candidates) { 1115 if (Candidate->select(Flags, Result.SelectedMultilib)) { 1116 if (Candidate == &DebianMipsMultilibs) 1117 Result.BiarchSibling = Multilib(); 1118 Result.Multilibs = *Candidate; 1119 return true; 1120 } 1121 } 1122 return false; 1123 } 1124 1125 static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path, 1126 const Multilib::flags_list &Flags, 1127 FilterNonExistent &NonExistent, 1128 DetectedMultilibs &Result) { 1129 1130 MultilibSet AndroidMipsMultilibs = 1131 MultilibSet() 1132 .Maybe(Multilib("/mips-r2").flag("+march=mips32r2")) 1133 .Maybe(Multilib("/mips-r6").flag("+march=mips32r6")) 1134 .FilterOut(NonExistent); 1135 1136 MultilibSet AndroidMipselMultilibs = 1137 MultilibSet() 1138 .Either(Multilib().flag("+march=mips32"), 1139 Multilib("/mips-r2", "", "/mips-r2").flag("+march=mips32r2"), 1140 Multilib("/mips-r6", "", "/mips-r6").flag("+march=mips32r6")) 1141 .FilterOut(NonExistent); 1142 1143 MultilibSet AndroidMips64elMultilibs = 1144 MultilibSet() 1145 .Either( 1146 Multilib().flag("+march=mips64r6"), 1147 Multilib("/32/mips-r1", "", "/mips-r1").flag("+march=mips32"), 1148 Multilib("/32/mips-r2", "", "/mips-r2").flag("+march=mips32r2"), 1149 Multilib("/32/mips-r6", "", "/mips-r6").flag("+march=mips32r6")) 1150 .FilterOut(NonExistent); 1151 1152 MultilibSet *MS = &AndroidMipsMultilibs; 1153 if (VFS.exists(Path + "/mips-r6")) 1154 MS = &AndroidMipselMultilibs; 1155 else if (VFS.exists(Path + "/32")) 1156 MS = &AndroidMips64elMultilibs; 1157 if (MS->select(Flags, Result.SelectedMultilib)) { 1158 Result.Multilibs = *MS; 1159 return true; 1160 } 1161 return false; 1162 } 1163 1164 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags, 1165 FilterNonExistent &NonExistent, 1166 DetectedMultilibs &Result) { 1167 // Musl toolchain multilibs 1168 MultilibSet MuslMipsMultilibs; 1169 { 1170 auto MArchMipsR2 = makeMultilib("") 1171 .osSuffix("/mips-r2-hard-musl") 1172 .flag("+EB") 1173 .flag("-EL") 1174 .flag("+march=mips32r2"); 1175 1176 auto MArchMipselR2 = makeMultilib("/mipsel-r2-hard-musl") 1177 .flag("-EB") 1178 .flag("+EL") 1179 .flag("+march=mips32r2"); 1180 1181 MuslMipsMultilibs = MultilibSet().Either(MArchMipsR2, MArchMipselR2); 1182 1183 // Specify the callback that computes the include directories. 1184 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) { 1185 return std::vector<std::string>( 1186 {"/../sysroot" + M.osSuffix() + "/usr/include"}); 1187 }); 1188 } 1189 if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilib)) { 1190 Result.Multilibs = MuslMipsMultilibs; 1191 return true; 1192 } 1193 return false; 1194 } 1195 1196 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags, 1197 FilterNonExistent &NonExistent, 1198 DetectedMultilibs &Result) { 1199 // CodeScape MTI toolchain v1.2 and early. 1200 MultilibSet MtiMipsMultilibsV1; 1201 { 1202 auto MArchMips32 = makeMultilib("/mips32") 1203 .flag("+m32") 1204 .flag("-m64") 1205 .flag("-mmicromips") 1206 .flag("+march=mips32"); 1207 1208 auto MArchMicroMips = makeMultilib("/micromips") 1209 .flag("+m32") 1210 .flag("-m64") 1211 .flag("+mmicromips"); 1212 1213 auto MArchMips64r2 = makeMultilib("/mips64r2") 1214 .flag("-m32") 1215 .flag("+m64") 1216 .flag("+march=mips64r2"); 1217 1218 auto MArchMips64 = makeMultilib("/mips64").flag("-m32").flag("+m64").flag( 1219 "-march=mips64r2"); 1220 1221 auto MArchDefault = makeMultilib("") 1222 .flag("+m32") 1223 .flag("-m64") 1224 .flag("-mmicromips") 1225 .flag("+march=mips32r2"); 1226 1227 auto Mips16 = makeMultilib("/mips16").flag("+mips16"); 1228 1229 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc"); 1230 1231 auto MAbi64 = 1232 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32"); 1233 1234 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL"); 1235 1236 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 1237 1238 auto SoftFloat = makeMultilib("/sof").flag("+msoft-float"); 1239 1240 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008"); 1241 1242 MtiMipsMultilibsV1 = 1243 MultilibSet() 1244 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64, 1245 MArchDefault) 1246 .Maybe(UCLibc) 1247 .Maybe(Mips16) 1248 .FilterOut("/mips64/mips16") 1249 .FilterOut("/mips64r2/mips16") 1250 .FilterOut("/micromips/mips16") 1251 .Maybe(MAbi64) 1252 .FilterOut("/micromips/64") 1253 .FilterOut("/mips32/64") 1254 .FilterOut("^/64") 1255 .FilterOut("/mips16/64") 1256 .Either(BigEndian, LittleEndian) 1257 .Maybe(SoftFloat) 1258 .Maybe(Nan2008) 1259 .FilterOut(".*sof/nan2008") 1260 .FilterOut(NonExistent) 1261 .setIncludeDirsCallback([](const Multilib &M) { 1262 std::vector<std::string> Dirs({"/include"}); 1263 if (StringRef(M.includeSuffix()).startswith("/uclibc")) 1264 Dirs.push_back("/../../../../sysroot/uclibc/usr/include"); 1265 else 1266 Dirs.push_back("/../../../../sysroot/usr/include"); 1267 return Dirs; 1268 }); 1269 } 1270 1271 // CodeScape IMG toolchain starting from v1.3. 1272 MultilibSet MtiMipsMultilibsV2; 1273 { 1274 auto BeHard = makeMultilib("/mips-r2-hard") 1275 .flag("+EB") 1276 .flag("-msoft-float") 1277 .flag("-mnan=2008") 1278 .flag("-muclibc"); 1279 auto BeSoft = makeMultilib("/mips-r2-soft") 1280 .flag("+EB") 1281 .flag("+msoft-float") 1282 .flag("-mnan=2008"); 1283 auto ElHard = makeMultilib("/mipsel-r2-hard") 1284 .flag("+EL") 1285 .flag("-msoft-float") 1286 .flag("-mnan=2008") 1287 .flag("-muclibc"); 1288 auto ElSoft = makeMultilib("/mipsel-r2-soft") 1289 .flag("+EL") 1290 .flag("+msoft-float") 1291 .flag("-mnan=2008") 1292 .flag("-mmicromips"); 1293 auto BeHardNan = makeMultilib("/mips-r2-hard-nan2008") 1294 .flag("+EB") 1295 .flag("-msoft-float") 1296 .flag("+mnan=2008") 1297 .flag("-muclibc"); 1298 auto ElHardNan = makeMultilib("/mipsel-r2-hard-nan2008") 1299 .flag("+EL") 1300 .flag("-msoft-float") 1301 .flag("+mnan=2008") 1302 .flag("-muclibc") 1303 .flag("-mmicromips"); 1304 auto BeHardNanUclibc = makeMultilib("/mips-r2-hard-nan2008-uclibc") 1305 .flag("+EB") 1306 .flag("-msoft-float") 1307 .flag("+mnan=2008") 1308 .flag("+muclibc"); 1309 auto ElHardNanUclibc = makeMultilib("/mipsel-r2-hard-nan2008-uclibc") 1310 .flag("+EL") 1311 .flag("-msoft-float") 1312 .flag("+mnan=2008") 1313 .flag("+muclibc"); 1314 auto BeHardUclibc = makeMultilib("/mips-r2-hard-uclibc") 1315 .flag("+EB") 1316 .flag("-msoft-float") 1317 .flag("-mnan=2008") 1318 .flag("+muclibc"); 1319 auto ElHardUclibc = makeMultilib("/mipsel-r2-hard-uclibc") 1320 .flag("+EL") 1321 .flag("-msoft-float") 1322 .flag("-mnan=2008") 1323 .flag("+muclibc"); 1324 auto ElMicroHardNan = makeMultilib("/micromipsel-r2-hard-nan2008") 1325 .flag("+EL") 1326 .flag("-msoft-float") 1327 .flag("+mnan=2008") 1328 .flag("+mmicromips"); 1329 auto ElMicroSoft = makeMultilib("/micromipsel-r2-soft") 1330 .flag("+EL") 1331 .flag("+msoft-float") 1332 .flag("-mnan=2008") 1333 .flag("+mmicromips"); 1334 1335 auto O32 = 1336 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64"); 1337 auto N32 = 1338 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64"); 1339 auto N64 = 1340 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64"); 1341 1342 MtiMipsMultilibsV2 = 1343 MultilibSet() 1344 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan, 1345 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc, 1346 ElHardUclibc, ElMicroHardNan, ElMicroSoft}) 1347 .Either(O32, N32, N64) 1348 .FilterOut(NonExistent) 1349 .setIncludeDirsCallback([](const Multilib &M) { 1350 return std::vector<std::string>({"/../../../../sysroot" + 1351 M.includeSuffix() + 1352 "/../usr/include"}); 1353 }) 1354 .setFilePathsCallback([](const Multilib &M) { 1355 return std::vector<std::string>( 1356 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()}); 1357 }); 1358 } 1359 for (auto Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) { 1360 if (Candidate->select(Flags, Result.SelectedMultilib)) { 1361 Result.Multilibs = *Candidate; 1362 return true; 1363 } 1364 } 1365 return false; 1366 } 1367 1368 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags, 1369 FilterNonExistent &NonExistent, 1370 DetectedMultilibs &Result) { 1371 // CodeScape IMG toolchain v1.2 and early. 1372 MultilibSet ImgMultilibsV1; 1373 { 1374 auto Mips64r6 = makeMultilib("/mips64r6").flag("+m64").flag("-m32"); 1375 1376 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 1377 1378 auto MAbi64 = 1379 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32"); 1380 1381 ImgMultilibsV1 = 1382 MultilibSet() 1383 .Maybe(Mips64r6) 1384 .Maybe(MAbi64) 1385 .Maybe(LittleEndian) 1386 .FilterOut(NonExistent) 1387 .setIncludeDirsCallback([](const Multilib &M) { 1388 return std::vector<std::string>( 1389 {"/include", "/../../../../sysroot/usr/include"}); 1390 }); 1391 } 1392 1393 // CodeScape IMG toolchain starting from v1.3. 1394 MultilibSet ImgMultilibsV2; 1395 { 1396 auto BeHard = makeMultilib("/mips-r6-hard") 1397 .flag("+EB") 1398 .flag("-msoft-float") 1399 .flag("-mmicromips"); 1400 auto BeSoft = makeMultilib("/mips-r6-soft") 1401 .flag("+EB") 1402 .flag("+msoft-float") 1403 .flag("-mmicromips"); 1404 auto ElHard = makeMultilib("/mipsel-r6-hard") 1405 .flag("+EL") 1406 .flag("-msoft-float") 1407 .flag("-mmicromips"); 1408 auto ElSoft = makeMultilib("/mipsel-r6-soft") 1409 .flag("+EL") 1410 .flag("+msoft-float") 1411 .flag("-mmicromips"); 1412 auto BeMicroHard = makeMultilib("/micromips-r6-hard") 1413 .flag("+EB") 1414 .flag("-msoft-float") 1415 .flag("+mmicromips"); 1416 auto BeMicroSoft = makeMultilib("/micromips-r6-soft") 1417 .flag("+EB") 1418 .flag("+msoft-float") 1419 .flag("+mmicromips"); 1420 auto ElMicroHard = makeMultilib("/micromipsel-r6-hard") 1421 .flag("+EL") 1422 .flag("-msoft-float") 1423 .flag("+mmicromips"); 1424 auto ElMicroSoft = makeMultilib("/micromipsel-r6-soft") 1425 .flag("+EL") 1426 .flag("+msoft-float") 1427 .flag("+mmicromips"); 1428 1429 auto O32 = 1430 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64"); 1431 auto N32 = 1432 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64"); 1433 auto N64 = 1434 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64"); 1435 1436 ImgMultilibsV2 = 1437 MultilibSet() 1438 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft, 1439 ElMicroHard, ElMicroSoft}) 1440 .Either(O32, N32, N64) 1441 .FilterOut(NonExistent) 1442 .setIncludeDirsCallback([](const Multilib &M) { 1443 return std::vector<std::string>({"/../../../../sysroot" + 1444 M.includeSuffix() + 1445 "/../usr/include"}); 1446 }) 1447 .setFilePathsCallback([](const Multilib &M) { 1448 return std::vector<std::string>( 1449 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()}); 1450 }); 1451 } 1452 for (auto Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) { 1453 if (Candidate->select(Flags, Result.SelectedMultilib)) { 1454 Result.Multilibs = *Candidate; 1455 return true; 1456 } 1457 } 1458 return false; 1459 } 1460 1461 bool clang::driver::findMIPSMultilibs(const Driver &D, 1462 const llvm::Triple &TargetTriple, 1463 StringRef Path, const ArgList &Args, 1464 DetectedMultilibs &Result) { 1465 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1466 1467 StringRef CPUName; 1468 StringRef ABIName; 1469 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName); 1470 1471 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 1472 1473 Multilib::flags_list Flags; 1474 addMultilibFlag(TargetTriple.isMIPS32(), "m32", Flags); 1475 addMultilibFlag(TargetTriple.isMIPS64(), "m64", Flags); 1476 addMultilibFlag(isMips16(Args), "mips16", Flags); 1477 addMultilibFlag(CPUName == "mips32", "march=mips32", Flags); 1478 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" || 1479 CPUName == "mips32r5" || CPUName == "p5600", 1480 "march=mips32r2", Flags); 1481 addMultilibFlag(CPUName == "mips32r6", "march=mips32r6", Flags); 1482 addMultilibFlag(CPUName == "mips64", "march=mips64", Flags); 1483 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" || 1484 CPUName == "mips64r5" || CPUName == "octeon" || 1485 CPUName == "octeon+", 1486 "march=mips64r2", Flags); 1487 addMultilibFlag(CPUName == "mips64r6", "march=mips64r6", Flags); 1488 addMultilibFlag(isMicroMips(Args), "mmicromips", Flags); 1489 addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags); 1490 addMultilibFlag(tools::mips::isNaN2008(D, Args, TargetTriple), "mnan=2008", 1491 Flags); 1492 addMultilibFlag(ABIName == "n32", "mabi=n32", Flags); 1493 addMultilibFlag(ABIName == "n64", "mabi=n64", Flags); 1494 addMultilibFlag(isSoftFloatABI(Args), "msoft-float", Flags); 1495 addMultilibFlag(!isSoftFloatABI(Args), "mhard-float", Flags); 1496 addMultilibFlag(isMipsEL(TargetArch), "EL", Flags); 1497 addMultilibFlag(!isMipsEL(TargetArch), "EB", Flags); 1498 1499 if (TargetTriple.isAndroid()) 1500 return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent, 1501 Result); 1502 1503 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1504 TargetTriple.getOS() == llvm::Triple::Linux && 1505 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment) 1506 return findMipsMuslMultilibs(Flags, NonExistent, Result); 1507 1508 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1509 TargetTriple.getOS() == llvm::Triple::Linux && 1510 TargetTriple.isGNUEnvironment()) 1511 return findMipsMtiMultilibs(Flags, NonExistent, Result); 1512 1513 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies && 1514 TargetTriple.getOS() == llvm::Triple::Linux && 1515 TargetTriple.isGNUEnvironment()) 1516 return findMipsImgMultilibs(Flags, NonExistent, Result); 1517 1518 if (findMipsCsMultilibs(Flags, NonExistent, Result)) 1519 return true; 1520 1521 // Fallback to the regular toolchain-tree structure. 1522 Multilib Default; 1523 Result.Multilibs.push_back(Default); 1524 Result.Multilibs.FilterOut(NonExistent); 1525 1526 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) { 1527 Result.BiarchSibling = Multilib(); 1528 return true; 1529 } 1530 1531 return false; 1532 } 1533 1534 static void findAndroidArmMultilibs(const Driver &D, 1535 const llvm::Triple &TargetTriple, 1536 StringRef Path, const ArgList &Args, 1537 DetectedMultilibs &Result) { 1538 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb. 1539 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1540 Multilib ArmV7Multilib = makeMultilib("/armv7-a") 1541 .flag("+march=armv7-a") 1542 .flag("-mthumb"); 1543 Multilib ThumbMultilib = makeMultilib("/thumb") 1544 .flag("-march=armv7-a") 1545 .flag("+mthumb"); 1546 Multilib ArmV7ThumbMultilib = makeMultilib("/armv7-a/thumb") 1547 .flag("+march=armv7-a") 1548 .flag("+mthumb"); 1549 Multilib DefaultMultilib = makeMultilib("") 1550 .flag("-march=armv7-a") 1551 .flag("-mthumb"); 1552 MultilibSet AndroidArmMultilibs = 1553 MultilibSet() 1554 .Either(ThumbMultilib, ArmV7Multilib, 1555 ArmV7ThumbMultilib, DefaultMultilib) 1556 .FilterOut(NonExistent); 1557 1558 Multilib::flags_list Flags; 1559 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ); 1560 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm; 1561 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb; 1562 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7; 1563 bool IsThumbMode = IsThumbArch || 1564 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) || 1565 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB); 1566 bool IsArmV7Mode = (IsArmArch || IsThumbArch) && 1567 (llvm::ARM::parseArchVersion(Arch) == 7 || 1568 (IsArmArch && Arch == "" && IsV7SubArch)); 1569 addMultilibFlag(IsArmV7Mode, "march=armv7-a", Flags); 1570 addMultilibFlag(IsThumbMode, "mthumb", Flags); 1571 1572 if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilib)) 1573 Result.Multilibs = AndroidArmMultilibs; 1574 } 1575 1576 static bool findMSP430Multilibs(const Driver &D, 1577 const llvm::Triple &TargetTriple, 1578 StringRef Path, const ArgList &Args, 1579 DetectedMultilibs &Result) { 1580 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1581 Multilib WithoutExceptions = makeMultilib("/430").flag("-exceptions"); 1582 Multilib WithExceptions = makeMultilib("/430/exceptions").flag("+exceptions"); 1583 1584 // FIXME: when clang starts to support msp430x ISA additional logic 1585 // to select between multilib must be implemented 1586 // Multilib MSP430xMultilib = makeMultilib("/large"); 1587 1588 Result.Multilibs.push_back(WithoutExceptions); 1589 Result.Multilibs.push_back(WithExceptions); 1590 Result.Multilibs.FilterOut(NonExistent); 1591 1592 Multilib::flags_list Flags; 1593 addMultilibFlag(Args.hasFlag(options::OPT_fexceptions, 1594 options::OPT_fno_exceptions, false), 1595 "exceptions", Flags); 1596 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) 1597 return true; 1598 1599 return false; 1600 } 1601 1602 static void findCSKYMultilibs(const Driver &D, const llvm::Triple &TargetTriple, 1603 StringRef Path, const ArgList &Args, 1604 DetectedMultilibs &Result) { 1605 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1606 1607 tools::csky::FloatABI TheFloatABI = tools::csky::getCSKYFloatABI(D, Args); 1608 llvm::Optional<llvm::StringRef> Res = tools::csky::getCSKYArchName(D, Args, TargetTriple); 1609 1610 if (!Res) 1611 return; 1612 auto ARCHName = *Res; 1613 1614 Multilib::flags_list Flags; 1615 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Hard, "hard-fp", Flags); 1616 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::SoftFP, "soft-fp", 1617 Flags); 1618 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Soft, "soft", Flags); 1619 addMultilibFlag(ARCHName == "ck801", "march=ck801", Flags); 1620 addMultilibFlag(ARCHName == "ck802", "march=ck802", Flags); 1621 addMultilibFlag(ARCHName == "ck803", "march=ck803", Flags); 1622 addMultilibFlag(ARCHName == "ck804", "march=ck804", Flags); 1623 addMultilibFlag(ARCHName == "ck805", "march=ck805", Flags); 1624 addMultilibFlag(ARCHName == "ck807", "march=ck807", Flags); 1625 addMultilibFlag(ARCHName == "ck810", "march=ck810", Flags); 1626 addMultilibFlag(ARCHName == "ck810v", "march=ck810v", Flags); 1627 addMultilibFlag(ARCHName == "ck860", "march=ck860", Flags); 1628 addMultilibFlag(ARCHName == "ck860v", "march=ck860v", Flags); 1629 1630 bool isBigEndian = false; 1631 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian, 1632 options::OPT_mbig_endian)) 1633 isBigEndian = !A->getOption().matches(options::OPT_mlittle_endian); 1634 addMultilibFlag(isBigEndian, "EB", Flags); 1635 1636 auto HardFloat = makeMultilib("/hard-fp").flag("+hard-fp"); 1637 auto SoftFpFloat = makeMultilib("/soft-fp").flag("+soft-fp"); 1638 auto SoftFloat = makeMultilib("").flag("+soft"); 1639 auto Arch801 = makeMultilib("/ck801").flag("+march=ck801"); 1640 auto Arch802 = makeMultilib("/ck802").flag("+march=ck802"); 1641 auto Arch803 = makeMultilib("/ck803").flag("+march=ck803"); 1642 // CK804 use the same library as CK803 1643 auto Arch804 = makeMultilib("/ck803").flag("+march=ck804"); 1644 auto Arch805 = makeMultilib("/ck805").flag("+march=ck805"); 1645 auto Arch807 = makeMultilib("/ck807").flag("+march=ck807"); 1646 auto Arch810 = makeMultilib("").flag("+march=ck810"); 1647 auto Arch810v = makeMultilib("/ck810v").flag("+march=ck810v"); 1648 auto Arch860 = makeMultilib("/ck860").flag("+march=ck860"); 1649 auto Arch860v = makeMultilib("/ck860v").flag("+march=ck860v"); 1650 auto BigEndian = makeMultilib("/big").flag("+EB"); 1651 1652 MultilibSet CSKYMultilibs = 1653 MultilibSet() 1654 .Maybe(BigEndian) 1655 .Either({Arch801, Arch802, Arch803, Arch804, Arch805, Arch807, 1656 Arch810, Arch810v, Arch860, Arch860v}) 1657 .Either(HardFloat, SoftFpFloat, SoftFloat) 1658 .FilterOut(NonExistent); 1659 1660 if (CSKYMultilibs.select(Flags, Result.SelectedMultilib)) 1661 Result.Multilibs = CSKYMultilibs; 1662 } 1663 1664 static void findRISCVBareMetalMultilibs(const Driver &D, 1665 const llvm::Triple &TargetTriple, 1666 StringRef Path, const ArgList &Args, 1667 DetectedMultilibs &Result) { 1668 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1669 struct RiscvMultilib { 1670 StringRef march; 1671 StringRef mabi; 1672 }; 1673 // currently only support the set of multilibs like riscv-gnu-toolchain does. 1674 // TODO: support MULTILIB_REUSE 1675 constexpr RiscvMultilib RISCVMultilibSet[] = { 1676 {"rv32i", "ilp32"}, {"rv32im", "ilp32"}, {"rv32iac", "ilp32"}, 1677 {"rv32imac", "ilp32"}, {"rv32imafc", "ilp32f"}, {"rv64imac", "lp64"}, 1678 {"rv64imafdc", "lp64d"}}; 1679 1680 std::vector<Multilib> Ms; 1681 for (auto Element : RISCVMultilibSet) { 1682 // multilib path rule is ${march}/${mabi} 1683 Ms.emplace_back( 1684 makeMultilib((Twine(Element.march) + "/" + Twine(Element.mabi)).str()) 1685 .flag(Twine("+march=", Element.march).str()) 1686 .flag(Twine("+mabi=", Element.mabi).str())); 1687 } 1688 MultilibSet RISCVMultilibs = 1689 MultilibSet() 1690 .Either(ArrayRef<Multilib>(Ms)) 1691 .FilterOut(NonExistent) 1692 .setFilePathsCallback([](const Multilib &M) { 1693 return std::vector<std::string>( 1694 {M.gccSuffix(), 1695 "/../../../../riscv64-unknown-elf/lib" + M.gccSuffix(), 1696 "/../../../../riscv32-unknown-elf/lib" + M.gccSuffix()}); 1697 }); 1698 1699 1700 Multilib::flags_list Flags; 1701 llvm::StringSet<> Added_ABIs; 1702 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple); 1703 StringRef MArch = tools::riscv::getRISCVArch(Args, TargetTriple); 1704 for (auto Element : RISCVMultilibSet) { 1705 addMultilibFlag(MArch == Element.march, 1706 Twine("march=", Element.march).str().c_str(), Flags); 1707 if (!Added_ABIs.count(Element.mabi)) { 1708 Added_ABIs.insert(Element.mabi); 1709 addMultilibFlag(ABIName == Element.mabi, 1710 Twine("mabi=", Element.mabi).str().c_str(), Flags); 1711 } 1712 } 1713 1714 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib)) 1715 Result.Multilibs = RISCVMultilibs; 1716 } 1717 1718 static void findRISCVMultilibs(const Driver &D, 1719 const llvm::Triple &TargetTriple, StringRef Path, 1720 const ArgList &Args, DetectedMultilibs &Result) { 1721 if (TargetTriple.getOS() == llvm::Triple::UnknownOS) 1722 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result); 1723 1724 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1725 Multilib Ilp32 = makeMultilib("lib32/ilp32").flag("+m32").flag("+mabi=ilp32"); 1726 Multilib Ilp32f = 1727 makeMultilib("lib32/ilp32f").flag("+m32").flag("+mabi=ilp32f"); 1728 Multilib Ilp32d = 1729 makeMultilib("lib32/ilp32d").flag("+m32").flag("+mabi=ilp32d"); 1730 Multilib Lp64 = makeMultilib("lib64/lp64").flag("+m64").flag("+mabi=lp64"); 1731 Multilib Lp64f = makeMultilib("lib64/lp64f").flag("+m64").flag("+mabi=lp64f"); 1732 Multilib Lp64d = makeMultilib("lib64/lp64d").flag("+m64").flag("+mabi=lp64d"); 1733 MultilibSet RISCVMultilibs = 1734 MultilibSet() 1735 .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d}) 1736 .FilterOut(NonExistent); 1737 1738 Multilib::flags_list Flags; 1739 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64; 1740 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple); 1741 1742 addMultilibFlag(!IsRV64, "m32", Flags); 1743 addMultilibFlag(IsRV64, "m64", Flags); 1744 addMultilibFlag(ABIName == "ilp32", "mabi=ilp32", Flags); 1745 addMultilibFlag(ABIName == "ilp32f", "mabi=ilp32f", Flags); 1746 addMultilibFlag(ABIName == "ilp32d", "mabi=ilp32d", Flags); 1747 addMultilibFlag(ABIName == "lp64", "mabi=lp64", Flags); 1748 addMultilibFlag(ABIName == "lp64f", "mabi=lp64f", Flags); 1749 addMultilibFlag(ABIName == "lp64d", "mabi=lp64d", Flags); 1750 1751 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib)) 1752 Result.Multilibs = RISCVMultilibs; 1753 } 1754 1755 static bool findBiarchMultilibs(const Driver &D, 1756 const llvm::Triple &TargetTriple, 1757 StringRef Path, const ArgList &Args, 1758 bool NeedsBiarchSuffix, 1759 DetectedMultilibs &Result) { 1760 Multilib Default; 1761 1762 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs 1763 // in what would normally be GCCInstallPath and put the 64-bit 1764 // libs in a subdirectory named 64. The simple logic we follow is that 1765 // *if* there is a subdirectory of the right name with crtbegin.o in it, 1766 // we use that. If not, and if not a biarch triple alias, we look for 1767 // crtbegin.o without the subdirectory. 1768 1769 StringRef Suff64 = "/64"; 1770 // Solaris uses platform-specific suffixes instead of /64. 1771 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 1772 switch (TargetTriple.getArch()) { 1773 case llvm::Triple::x86: 1774 case llvm::Triple::x86_64: 1775 Suff64 = "/amd64"; 1776 break; 1777 case llvm::Triple::sparc: 1778 case llvm::Triple::sparcv9: 1779 Suff64 = "/sparcv9"; 1780 break; 1781 default: 1782 break; 1783 } 1784 } 1785 1786 Multilib Alt64 = Multilib() 1787 .gccSuffix(Suff64) 1788 .includeSuffix(Suff64) 1789 .flag("-m32") 1790 .flag("+m64") 1791 .flag("-mx32"); 1792 Multilib Alt32 = Multilib() 1793 .gccSuffix("/32") 1794 .includeSuffix("/32") 1795 .flag("+m32") 1796 .flag("-m64") 1797 .flag("-mx32"); 1798 Multilib Altx32 = Multilib() 1799 .gccSuffix("/x32") 1800 .includeSuffix("/x32") 1801 .flag("-m32") 1802 .flag("-m64") 1803 .flag("+mx32"); 1804 1805 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a. 1806 FilterNonExistent NonExistent( 1807 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS()); 1808 1809 // Determine default multilib from: 32, 64, x32 1810 // Also handle cases such as 64 on 32, 32 on 64, etc. 1811 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN; 1812 const bool IsX32 = TargetTriple.isX32(); 1813 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32)) 1814 Want = WANT64; 1815 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32)) 1816 Want = WANT64; 1817 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64)) 1818 Want = WANT32; 1819 else { 1820 if (TargetTriple.isArch32Bit()) 1821 Want = NeedsBiarchSuffix ? WANT64 : WANT32; 1822 else if (IsX32) 1823 Want = NeedsBiarchSuffix ? WANT64 : WANTX32; 1824 else 1825 Want = NeedsBiarchSuffix ? WANT32 : WANT64; 1826 } 1827 1828 if (Want == WANT32) 1829 Default.flag("+m32").flag("-m64").flag("-mx32"); 1830 else if (Want == WANT64) 1831 Default.flag("-m32").flag("+m64").flag("-mx32"); 1832 else if (Want == WANTX32) 1833 Default.flag("-m32").flag("-m64").flag("+mx32"); 1834 else 1835 return false; 1836 1837 Result.Multilibs.push_back(Default); 1838 Result.Multilibs.push_back(Alt64); 1839 Result.Multilibs.push_back(Alt32); 1840 Result.Multilibs.push_back(Altx32); 1841 1842 Result.Multilibs.FilterOut(NonExistent); 1843 1844 Multilib::flags_list Flags; 1845 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "m64", Flags); 1846 addMultilibFlag(TargetTriple.isArch32Bit(), "m32", Flags); 1847 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "mx32", Flags); 1848 1849 if (!Result.Multilibs.select(Flags, Result.SelectedMultilib)) 1850 return false; 1851 1852 if (Result.SelectedMultilib == Alt64 || Result.SelectedMultilib == Alt32 || 1853 Result.SelectedMultilib == Altx32) 1854 Result.BiarchSibling = Default; 1855 1856 return true; 1857 } 1858 1859 /// Generic_GCC - A tool chain using the 'gcc' command to perform 1860 /// all subcommands; this relies on gcc translating the majority of 1861 /// command line options. 1862 1863 /// Less-than for GCCVersion, implementing a Strict Weak Ordering. 1864 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor, 1865 int RHSPatch, 1866 StringRef RHSPatchSuffix) const { 1867 if (Major != RHSMajor) 1868 return Major < RHSMajor; 1869 if (Minor != RHSMinor) 1870 return Minor < RHSMinor; 1871 if (Patch != RHSPatch) { 1872 // Note that versions without a specified patch sort higher than those with 1873 // a patch. 1874 if (RHSPatch == -1) 1875 return true; 1876 if (Patch == -1) 1877 return false; 1878 1879 // Otherwise just sort on the patch itself. 1880 return Patch < RHSPatch; 1881 } 1882 if (PatchSuffix != RHSPatchSuffix) { 1883 // Sort empty suffixes higher. 1884 if (RHSPatchSuffix.empty()) 1885 return true; 1886 if (PatchSuffix.empty()) 1887 return false; 1888 1889 // Provide a lexicographic sort to make this a total ordering. 1890 return PatchSuffix < RHSPatchSuffix; 1891 } 1892 1893 // The versions are equal. 1894 return false; 1895 } 1896 1897 /// Parse a GCCVersion object out of a string of text. 1898 /// 1899 /// This is the primary means of forming GCCVersion objects. 1900 /*static*/ 1901 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) { 1902 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 1903 std::pair<StringRef, StringRef> First = VersionText.split('.'); 1904 std::pair<StringRef, StringRef> Second = First.second.split('.'); 1905 1906 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 1907 if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0) 1908 return BadVersion; 1909 GoodVersion.MajorStr = First.first.str(); 1910 if (First.second.empty()) 1911 return GoodVersion; 1912 StringRef MinorStr = Second.first; 1913 if (Second.second.empty()) { 1914 if (size_t EndNumber = MinorStr.find_first_not_of("0123456789")) { 1915 GoodVersion.PatchSuffix = std::string(MinorStr.substr(EndNumber)); 1916 MinorStr = MinorStr.slice(0, EndNumber); 1917 } 1918 } 1919 if (MinorStr.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0) 1920 return BadVersion; 1921 GoodVersion.MinorStr = MinorStr.str(); 1922 1923 // First look for a number prefix and parse that if present. Otherwise just 1924 // stash the entire patch string in the suffix, and leave the number 1925 // unspecified. This covers versions strings such as: 1926 // 5 (handled above) 1927 // 4.4 1928 // 4.4-patched 1929 // 4.4.0 1930 // 4.4.x 1931 // 4.4.2-rc4 1932 // 4.4.x-patched 1933 // And retains any patch number it finds. 1934 StringRef PatchText = Second.second; 1935 if (!PatchText.empty()) { 1936 if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) { 1937 // Try to parse the number and any suffix. 1938 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) || 1939 GoodVersion.Patch < 0) 1940 return BadVersion; 1941 GoodVersion.PatchSuffix = std::string(PatchText.substr(EndNumber)); 1942 } 1943 } 1944 1945 return GoodVersion; 1946 } 1947 1948 static llvm::StringRef getGCCToolchainDir(const ArgList &Args, 1949 llvm::StringRef SysRoot) { 1950 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain); 1951 if (A) 1952 return A->getValue(); 1953 1954 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX. 1955 // GCC_INSTALL_PREFIX specifies the gcc installation for the default 1956 // sysroot and is likely not valid with a different sysroot. 1957 if (!SysRoot.empty()) 1958 return ""; 1959 1960 return GCC_INSTALL_PREFIX; 1961 } 1962 1963 /// Initialize a GCCInstallationDetector from the driver. 1964 /// 1965 /// This performs all of the autodetection and sets up the various paths. 1966 /// Once constructed, a GCCInstallationDetector is essentially immutable. 1967 /// 1968 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and 1969 /// should instead pull the target out of the driver. This is currently 1970 /// necessary because the driver doesn't store the final version of the target 1971 /// triple. 1972 void Generic_GCC::GCCInstallationDetector::init( 1973 const llvm::Triple &TargetTriple, const ArgList &Args, 1974 ArrayRef<std::string> ExtraTripleAliases) { 1975 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit() 1976 ? TargetTriple.get64BitArchVariant() 1977 : TargetTriple.get32BitArchVariant(); 1978 // The library directories which may contain GCC installations. 1979 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs; 1980 // The compatible GCC triples for this particular architecture. 1981 SmallVector<StringRef, 16> CandidateTripleAliases; 1982 SmallVector<StringRef, 16> CandidateBiarchTripleAliases; 1983 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs, 1984 CandidateTripleAliases, CandidateBiarchLibDirs, 1985 CandidateBiarchTripleAliases); 1986 1987 // Compute the set of prefixes for our search. 1988 SmallVector<std::string, 8> Prefixes; 1989 StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot); 1990 if (GCCToolchainDir != "") { 1991 if (GCCToolchainDir.back() == '/') 1992 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the / 1993 1994 Prefixes.push_back(std::string(GCCToolchainDir)); 1995 } else { 1996 // If we have a SysRoot, try that first. 1997 if (!D.SysRoot.empty()) { 1998 Prefixes.push_back(D.SysRoot); 1999 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 2000 } 2001 2002 // Then look for gcc installed alongside clang. 2003 Prefixes.push_back(D.InstalledDir + "/.."); 2004 2005 // Next, look for prefix(es) that correspond to distribution-supplied gcc 2006 // installations. 2007 if (D.SysRoot.empty()) { 2008 // Typically /usr. 2009 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 2010 } 2011 2012 // Try to respect gcc-config on Gentoo if --gcc-toolchain is not provided. 2013 // This avoids accidentally enforcing the system GCC version when using a 2014 // custom toolchain. 2015 SmallVector<StringRef, 16> GentooTestTriples; 2016 // Try to match an exact triple as target triple first. 2017 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for 2018 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu" 2019 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching 2020 // triple x86_64-gentoo-linux-gnu is present. 2021 GentooTestTriples.push_back(TargetTriple.str()); 2022 // Check rest of triples. 2023 GentooTestTriples.append(ExtraTripleAliases.begin(), 2024 ExtraTripleAliases.end()); 2025 GentooTestTriples.append(CandidateTripleAliases.begin(), 2026 CandidateTripleAliases.end()); 2027 if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples, 2028 CandidateBiarchTripleAliases)) 2029 return; 2030 } 2031 2032 // Loop over the various components which exist and select the best GCC 2033 // installation available. GCC installs are ranked by version number. 2034 const GCCVersion VersionZero = GCCVersion::Parse("0.0.0"); 2035 Version = VersionZero; 2036 for (const std::string &Prefix : Prefixes) { 2037 auto &VFS = D.getVFS(); 2038 if (!VFS.exists(Prefix)) 2039 continue; 2040 for (StringRef Suffix : CandidateLibDirs) { 2041 const std::string LibDir = concat(Prefix, Suffix); 2042 if (!VFS.exists(LibDir)) 2043 continue; 2044 // Maybe filter out <libdir>/gcc and <libdir>/gcc-cross. 2045 bool GCCDirExists = VFS.exists(LibDir + "/gcc"); 2046 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross"); 2047 // Try to match the exact target triple first. 2048 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, TargetTriple.str(), 2049 false, GCCDirExists, GCCCrossDirExists); 2050 // Try rest of possible triples. 2051 for (StringRef Candidate : ExtraTripleAliases) // Try these first. 2052 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, false, 2053 GCCDirExists, GCCCrossDirExists); 2054 for (StringRef Candidate : CandidateTripleAliases) 2055 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, false, 2056 GCCDirExists, GCCCrossDirExists); 2057 } 2058 for (StringRef Suffix : CandidateBiarchLibDirs) { 2059 const std::string LibDir = Prefix + Suffix.str(); 2060 if (!VFS.exists(LibDir)) 2061 continue; 2062 bool GCCDirExists = VFS.exists(LibDir + "/gcc"); 2063 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross"); 2064 for (StringRef Candidate : CandidateBiarchTripleAliases) 2065 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, true, 2066 GCCDirExists, GCCCrossDirExists); 2067 } 2068 2069 // Skip other prefixes once a GCC installation is found. 2070 if (Version > VersionZero) 2071 break; 2072 } 2073 } 2074 2075 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const { 2076 for (const auto &InstallPath : CandidateGCCInstallPaths) 2077 OS << "Found candidate GCC installation: " << InstallPath << "\n"; 2078 2079 if (!GCCInstallPath.empty()) 2080 OS << "Selected GCC installation: " << GCCInstallPath << "\n"; 2081 2082 for (const auto &Multilib : Multilibs) 2083 OS << "Candidate multilib: " << Multilib << "\n"; 2084 2085 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault()) 2086 OS << "Selected multilib: " << SelectedMultilib << "\n"; 2087 } 2088 2089 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const { 2090 if (BiarchSibling.hasValue()) { 2091 M = BiarchSibling.getValue(); 2092 return true; 2093 } 2094 return false; 2095 } 2096 2097 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes( 2098 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes, 2099 StringRef SysRoot) { 2100 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 2101 // Solaris is a special case. 2102 // The GCC installation is under 2103 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/ 2104 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with 2105 // /usr/gcc/<version> as a prefix. 2106 2107 std::string PrefixDir = concat(SysRoot, "/usr/gcc"); 2108 std::error_code EC; 2109 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC), 2110 LE; 2111 !EC && LI != LE; LI = LI.increment(EC)) { 2112 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2113 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 2114 2115 // Filter out obviously bad entries. 2116 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1)) 2117 continue; 2118 2119 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str(); 2120 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc"; 2121 if (!D.getVFS().exists(CandidateLibPath)) 2122 continue; 2123 2124 Prefixes.push_back(CandidatePrefix); 2125 } 2126 return; 2127 } 2128 2129 // For Linux, if --sysroot is not specified, look for RHEL/CentOS devtoolsets 2130 // and gcc-toolsets. 2131 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux && 2132 D.getVFS().exists("/opt/rh")) { 2133 Prefixes.push_back("/opt/rh/gcc-toolset-11/root/usr"); 2134 Prefixes.push_back("/opt/rh/gcc-toolset-10/root/usr"); 2135 Prefixes.push_back("/opt/rh/devtoolset-11/root/usr"); 2136 Prefixes.push_back("/opt/rh/devtoolset-10/root/usr"); 2137 Prefixes.push_back("/opt/rh/devtoolset-9/root/usr"); 2138 Prefixes.push_back("/opt/rh/devtoolset-8/root/usr"); 2139 Prefixes.push_back("/opt/rh/devtoolset-7/root/usr"); 2140 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr"); 2141 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr"); 2142 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr"); 2143 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr"); 2144 } 2145 2146 // Fall back to /usr which is used by most non-Solaris systems. 2147 Prefixes.push_back(concat(SysRoot, "/usr")); 2148 } 2149 2150 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples( 2151 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple, 2152 SmallVectorImpl<StringRef> &LibDirs, 2153 SmallVectorImpl<StringRef> &TripleAliases, 2154 SmallVectorImpl<StringRef> &BiarchLibDirs, 2155 SmallVectorImpl<StringRef> &BiarchTripleAliases) { 2156 // Declare a bunch of static data sets that we'll select between below. These 2157 // are specifically designed to always refer to string literals to avoid any 2158 // lifetime or initialization issues. 2159 // 2160 // The *Triples variables hard code some triples so that, for example, 2161 // --target=aarch64 (incomplete triple) can detect lib/aarch64-linux-gnu. 2162 // They are not needed when the user has correct LLVM_DEFAULT_TARGET_TRIPLE 2163 // and always uses the full --target (e.g. --target=aarch64-linux-gnu). The 2164 // lists should shrink over time. Please don't add more elements to *Triples. 2165 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"}; 2166 static const char *const AArch64Triples[] = { 2167 "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-redhat-linux", 2168 "aarch64-suse-linux"}; 2169 static const char *const AArch64beLibDirs[] = {"/lib"}; 2170 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu", 2171 "aarch64_be-linux-gnu"}; 2172 2173 static const char *const ARMLibDirs[] = {"/lib"}; 2174 static const char *const ARMTriples[] = {"arm-linux-gnueabi"}; 2175 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf", 2176 "armv7hl-redhat-linux-gnueabi", 2177 "armv6hl-suse-linux-gnueabi", 2178 "armv7hl-suse-linux-gnueabi"}; 2179 static const char *const ARMebLibDirs[] = {"/lib"}; 2180 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi"}; 2181 static const char *const ARMebHFTriples[] = { 2182 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"}; 2183 2184 static const char *const AVRLibDirs[] = {"/lib"}; 2185 static const char *const AVRTriples[] = {"avr"}; 2186 2187 static const char *const CSKYLibDirs[] = {"/lib"}; 2188 static const char *const CSKYTriples[] = { 2189 "csky-linux-gnuabiv2", "csky-linux-uclibcabiv2", "csky-elf-noneabiv2"}; 2190 2191 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"}; 2192 static const char *const X86_64Triples[] = { 2193 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu", 2194 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E", 2195 "x86_64-redhat-linux", "x86_64-suse-linux", 2196 "x86_64-manbo-linux-gnu", "x86_64-linux-gnu", 2197 "x86_64-slackware-linux", "x86_64-unknown-linux", 2198 "x86_64-amazon-linux"}; 2199 static const char *const X32Triples[] = {"x86_64-linux-gnux32", 2200 "x86_64-pc-linux-gnux32"}; 2201 static const char *const X32LibDirs[] = {"/libx32", "/lib"}; 2202 static const char *const X86LibDirs[] = {"/lib32", "/lib"}; 2203 static const char *const X86Triples[] = { 2204 "i586-linux-gnu", "i686-linux-gnu", "i686-pc-linux-gnu", 2205 "i386-redhat-linux6E", "i686-redhat-linux", "i386-redhat-linux", 2206 "i586-suse-linux", "i686-montavista-linux", "i686-gnu", 2207 }; 2208 2209 static const char *const M68kLibDirs[] = {"/lib"}; 2210 static const char *const M68kTriples[] = { 2211 "m68k-linux-gnu", "m68k-unknown-linux-gnu", "m68k-suse-linux"}; 2212 2213 static const char *const MIPSLibDirs[] = {"/libo32", "/lib"}; 2214 static const char *const MIPSTriples[] = { 2215 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu", 2216 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"}; 2217 static const char *const MIPSELLibDirs[] = {"/libo32", "/lib"}; 2218 static const char *const MIPSELTriples[] = { 2219 "mipsel-linux-gnu", "mips-img-linux-gnu", "mipsisa32r6el-linux-gnu"}; 2220 2221 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"}; 2222 static const char *const MIPS64Triples[] = { 2223 "mips64-linux-gnu", "mips-mti-linux-gnu", 2224 "mips-img-linux-gnu", "mips64-linux-gnuabi64", 2225 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"}; 2226 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"}; 2227 static const char *const MIPS64ELTriples[] = { 2228 "mips64el-linux-gnu", "mips-mti-linux-gnu", 2229 "mips-img-linux-gnu", "mips64el-linux-gnuabi64", 2230 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64"}; 2231 2232 static const char *const MIPSN32LibDirs[] = {"/lib32"}; 2233 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32", 2234 "mipsisa64r6-linux-gnuabin32"}; 2235 static const char *const MIPSN32ELLibDirs[] = {"/lib32"}; 2236 static const char *const MIPSN32ELTriples[] = { 2237 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"}; 2238 2239 static const char *const MSP430LibDirs[] = {"/lib"}; 2240 static const char *const MSP430Triples[] = {"msp430-elf"}; 2241 2242 static const char *const PPCLibDirs[] = {"/lib32", "/lib"}; 2243 static const char *const PPCTriples[] = { 2244 "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe", 2245 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a 2246 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux". 2247 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"}; 2248 static const char *const PPCLELibDirs[] = {"/lib32", "/lib"}; 2249 static const char *const PPCLETriples[] = {"powerpcle-linux-gnu", 2250 "powerpcle-unknown-linux-gnu", 2251 "powerpcle-linux-musl"}; 2252 2253 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"}; 2254 static const char *const PPC64Triples[] = { 2255 "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu", 2256 "powerpc64-suse-linux", "ppc64-redhat-linux"}; 2257 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"}; 2258 static const char *const PPC64LETriples[] = { 2259 "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu", 2260 "powerpc64le-none-linux-gnu", "powerpc64le-suse-linux", 2261 "ppc64le-redhat-linux"}; 2262 2263 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"}; 2264 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu", 2265 "riscv32-linux-gnu", 2266 "riscv32-unknown-elf"}; 2267 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"}; 2268 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu", 2269 "riscv64-linux-gnu", 2270 "riscv64-unknown-elf"}; 2271 2272 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"}; 2273 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu", 2274 "sparcv8-linux-gnu"}; 2275 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"}; 2276 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu", 2277 "sparcv9-linux-gnu"}; 2278 2279 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"}; 2280 static const char *const SystemZTriples[] = { 2281 "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu", 2282 "s390x-suse-linux", "s390x-redhat-linux"}; 2283 2284 2285 using std::begin; 2286 using std::end; 2287 2288 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 2289 static const char *const SolarisLibDirs[] = {"/lib"}; 2290 static const char *const SolarisSparcV8Triples[] = { 2291 "sparc-sun-solaris2.11", "sparc-sun-solaris2.12"}; 2292 static const char *const SolarisSparcV9Triples[] = { 2293 "sparcv9-sun-solaris2.11", "sparcv9-sun-solaris2.12"}; 2294 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11", 2295 "i386-pc-solaris2.12"}; 2296 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11", 2297 "x86_64-pc-solaris2.12"}; 2298 LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 2299 BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 2300 switch (TargetTriple.getArch()) { 2301 case llvm::Triple::x86: 2302 TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples)); 2303 BiarchTripleAliases.append(begin(SolarisX86_64Triples), 2304 end(SolarisX86_64Triples)); 2305 break; 2306 case llvm::Triple::x86_64: 2307 TripleAliases.append(begin(SolarisX86_64Triples), 2308 end(SolarisX86_64Triples)); 2309 BiarchTripleAliases.append(begin(SolarisX86Triples), 2310 end(SolarisX86Triples)); 2311 break; 2312 case llvm::Triple::sparc: 2313 TripleAliases.append(begin(SolarisSparcV8Triples), 2314 end(SolarisSparcV8Triples)); 2315 BiarchTripleAliases.append(begin(SolarisSparcV9Triples), 2316 end(SolarisSparcV9Triples)); 2317 break; 2318 case llvm::Triple::sparcv9: 2319 TripleAliases.append(begin(SolarisSparcV9Triples), 2320 end(SolarisSparcV9Triples)); 2321 BiarchTripleAliases.append(begin(SolarisSparcV8Triples), 2322 end(SolarisSparcV8Triples)); 2323 break; 2324 default: 2325 break; 2326 } 2327 return; 2328 } 2329 2330 // Android targets should not use GNU/Linux tools or libraries. 2331 if (TargetTriple.isAndroid()) { 2332 static const char *const AArch64AndroidTriples[] = { 2333 "aarch64-linux-android"}; 2334 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"}; 2335 static const char *const MIPSELAndroidTriples[] = {"mipsel-linux-android"}; 2336 static const char *const MIPS64ELAndroidTriples[] = { 2337 "mips64el-linux-android"}; 2338 static const char *const X86AndroidTriples[] = {"i686-linux-android"}; 2339 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"}; 2340 2341 switch (TargetTriple.getArch()) { 2342 case llvm::Triple::aarch64: 2343 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2344 TripleAliases.append(begin(AArch64AndroidTriples), 2345 end(AArch64AndroidTriples)); 2346 break; 2347 case llvm::Triple::arm: 2348 case llvm::Triple::thumb: 2349 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2350 TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples)); 2351 break; 2352 case llvm::Triple::mipsel: 2353 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2354 TripleAliases.append(begin(MIPSELAndroidTriples), 2355 end(MIPSELAndroidTriples)); 2356 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2357 BiarchTripleAliases.append(begin(MIPS64ELAndroidTriples), 2358 end(MIPS64ELAndroidTriples)); 2359 break; 2360 case llvm::Triple::mips64el: 2361 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2362 TripleAliases.append(begin(MIPS64ELAndroidTriples), 2363 end(MIPS64ELAndroidTriples)); 2364 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2365 BiarchTripleAliases.append(begin(MIPSELAndroidTriples), 2366 end(MIPSELAndroidTriples)); 2367 break; 2368 case llvm::Triple::x86_64: 2369 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2370 TripleAliases.append(begin(X86_64AndroidTriples), 2371 end(X86_64AndroidTriples)); 2372 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2373 BiarchTripleAliases.append(begin(X86AndroidTriples), 2374 end(X86AndroidTriples)); 2375 break; 2376 case llvm::Triple::x86: 2377 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2378 TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples)); 2379 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2380 BiarchTripleAliases.append(begin(X86_64AndroidTriples), 2381 end(X86_64AndroidTriples)); 2382 break; 2383 default: 2384 break; 2385 } 2386 2387 return; 2388 } 2389 2390 switch (TargetTriple.getArch()) { 2391 case llvm::Triple::aarch64: 2392 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2393 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2394 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2395 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2396 break; 2397 case llvm::Triple::aarch64_be: 2398 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2399 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2400 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2401 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2402 break; 2403 case llvm::Triple::arm: 2404 case llvm::Triple::thumb: 2405 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2406 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2407 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples)); 2408 } else { 2409 TripleAliases.append(begin(ARMTriples), end(ARMTriples)); 2410 } 2411 break; 2412 case llvm::Triple::armeb: 2413 case llvm::Triple::thumbeb: 2414 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs)); 2415 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2416 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples)); 2417 } else { 2418 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples)); 2419 } 2420 break; 2421 case llvm::Triple::avr: 2422 LibDirs.append(begin(AVRLibDirs), end(AVRLibDirs)); 2423 TripleAliases.append(begin(AVRTriples), end(AVRTriples)); 2424 break; 2425 case llvm::Triple::csky: 2426 LibDirs.append(begin(CSKYLibDirs), end(CSKYLibDirs)); 2427 TripleAliases.append(begin(CSKYTriples), end(CSKYTriples)); 2428 break; 2429 case llvm::Triple::x86_64: 2430 if (TargetTriple.isX32()) { 2431 LibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2432 TripleAliases.append(begin(X32Triples), end(X32Triples)); 2433 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2434 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2435 } else { 2436 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2437 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2438 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2439 BiarchTripleAliases.append(begin(X32Triples), end(X32Triples)); 2440 } 2441 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2442 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples)); 2443 break; 2444 case llvm::Triple::x86: 2445 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2446 // MCU toolchain is 32 bit only and its triple alias is TargetTriple 2447 // itself, which will be appended below. 2448 if (!TargetTriple.isOSIAMCU()) { 2449 TripleAliases.append(begin(X86Triples), end(X86Triples)); 2450 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2451 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2452 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2453 BiarchTripleAliases.append(begin(X32Triples), end(X32Triples)); 2454 } 2455 break; 2456 case llvm::Triple::m68k: 2457 LibDirs.append(begin(M68kLibDirs), end(M68kLibDirs)); 2458 TripleAliases.append(begin(M68kTriples), end(M68kTriples)); 2459 break; 2460 case llvm::Triple::mips: 2461 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2462 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2463 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2464 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2465 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs)); 2466 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples)); 2467 break; 2468 case llvm::Triple::mipsel: 2469 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2470 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2471 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2472 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2473 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2474 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs)); 2475 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples)); 2476 break; 2477 case llvm::Triple::mips64: 2478 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2479 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2480 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2481 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2482 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs)); 2483 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples)); 2484 break; 2485 case llvm::Triple::mips64el: 2486 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2487 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2488 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2489 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2490 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs)); 2491 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples)); 2492 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2493 break; 2494 case llvm::Triple::msp430: 2495 LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs)); 2496 TripleAliases.append(begin(MSP430Triples), end(MSP430Triples)); 2497 break; 2498 case llvm::Triple::ppc: 2499 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2500 TripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2501 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2502 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2503 break; 2504 case llvm::Triple::ppcle: 2505 LibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs)); 2506 TripleAliases.append(begin(PPCLETriples), end(PPCLETriples)); 2507 BiarchLibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs)); 2508 BiarchTripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples)); 2509 break; 2510 case llvm::Triple::ppc64: 2511 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2512 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2513 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2514 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2515 break; 2516 case llvm::Triple::ppc64le: 2517 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs)); 2518 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples)); 2519 BiarchLibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs)); 2520 BiarchTripleAliases.append(begin(PPCLETriples), end(PPCLETriples)); 2521 break; 2522 case llvm::Triple::riscv32: 2523 LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2524 TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples)); 2525 BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs)); 2526 BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples)); 2527 break; 2528 case llvm::Triple::riscv64: 2529 LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs)); 2530 TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples)); 2531 BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2532 BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples)); 2533 break; 2534 case llvm::Triple::sparc: 2535 case llvm::Triple::sparcel: 2536 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2537 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2538 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2539 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2540 break; 2541 case llvm::Triple::sparcv9: 2542 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2543 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2544 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2545 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2546 break; 2547 case llvm::Triple::systemz: 2548 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs)); 2549 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples)); 2550 break; 2551 default: 2552 // By default, just rely on the standard lib directories and the original 2553 // triple. 2554 break; 2555 } 2556 2557 // Always append the drivers target triple to the end, in case it doesn't 2558 // match any of our aliases. 2559 TripleAliases.push_back(TargetTriple.str()); 2560 2561 // Also include the multiarch variant if it's different. 2562 if (TargetTriple.str() != BiarchTriple.str()) 2563 BiarchTripleAliases.push_back(BiarchTriple.str()); 2564 } 2565 2566 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs( 2567 const llvm::Triple &TargetTriple, const ArgList &Args, 2568 StringRef Path, bool NeedsBiarchSuffix) { 2569 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 2570 DetectedMultilibs Detected; 2571 2572 // Android standalone toolchain could have multilibs for ARM and Thumb. 2573 // Debian mips multilibs behave more like the rest of the biarch ones, 2574 // so handle them there 2575 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) { 2576 // It should also work without multilibs in a simplified toolchain. 2577 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected); 2578 } else if (TargetTriple.isCSKY()) { 2579 findCSKYMultilibs(D, TargetTriple, Path, Args, Detected); 2580 } else if (TargetTriple.isMIPS()) { 2581 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected)) 2582 return false; 2583 } else if (TargetTriple.isRISCV()) { 2584 findRISCVMultilibs(D, TargetTriple, Path, Args, Detected); 2585 } else if (isMSP430(TargetArch)) { 2586 findMSP430Multilibs(D, TargetTriple, Path, Args, Detected); 2587 } else if (TargetArch == llvm::Triple::avr) { 2588 // AVR has no multilibs. 2589 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args, 2590 NeedsBiarchSuffix, Detected)) { 2591 return false; 2592 } 2593 2594 Multilibs = Detected.Multilibs; 2595 SelectedMultilib = Detected.SelectedMultilib; 2596 BiarchSibling = Detected.BiarchSibling; 2597 2598 return true; 2599 } 2600 2601 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple( 2602 const llvm::Triple &TargetTriple, const ArgList &Args, 2603 const std::string &LibDir, StringRef CandidateTriple, 2604 bool NeedsBiarchSuffix, bool GCCDirExists, bool GCCCrossDirExists) { 2605 // Locations relative to the system lib directory where GCC's triple-specific 2606 // directories might reside. 2607 struct GCCLibSuffix { 2608 // Path from system lib directory to GCC triple-specific directory. 2609 std::string LibSuffix; 2610 // Path from GCC triple-specific directory back to system lib directory. 2611 // This is one '..' component per component in LibSuffix. 2612 StringRef ReversePath; 2613 // Whether this library suffix is relevant for the triple. 2614 bool Active; 2615 } Suffixes[] = { 2616 // This is the normal place. 2617 {"gcc/" + CandidateTriple.str(), "../..", GCCDirExists}, 2618 2619 // Debian puts cross-compilers in gcc-cross. 2620 {"gcc-cross/" + CandidateTriple.str(), "../..", GCCCrossDirExists}, 2621 2622 // The Freescale PPC SDK has the gcc libraries in 2623 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do 2624 // this on Freescale triples, though, since some systems put a *lot* of 2625 // files in that location, not just GCC installation data. 2626 {CandidateTriple.str(), "..", 2627 TargetTriple.getVendor() == llvm::Triple::Freescale || 2628 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}}; 2629 2630 for (auto &Suffix : Suffixes) { 2631 if (!Suffix.Active) 2632 continue; 2633 2634 StringRef LibSuffix = Suffix.LibSuffix; 2635 std::error_code EC; 2636 for (llvm::vfs::directory_iterator 2637 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC), 2638 LE; 2639 !EC && LI != LE; LI = LI.increment(EC)) { 2640 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2641 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 2642 if (CandidateVersion.Major != -1) // Filter obviously bad entries. 2643 if (!CandidateGCCInstallPaths.insert(std::string(LI->path())).second) 2644 continue; // Saw this path before; no need to look at it again. 2645 if (CandidateVersion.isOlderThan(4, 1, 1)) 2646 continue; 2647 if (CandidateVersion <= Version) 2648 continue; 2649 2650 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(), 2651 NeedsBiarchSuffix)) 2652 continue; 2653 2654 Version = CandidateVersion; 2655 GCCTriple.setTriple(CandidateTriple); 2656 // FIXME: We hack together the directory name here instead of 2657 // using LI to ensure stable path separators across Windows and 2658 // Linux. 2659 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str(); 2660 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str(); 2661 IsValid = true; 2662 } 2663 } 2664 } 2665 2666 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs( 2667 const llvm::Triple &TargetTriple, const ArgList &Args, 2668 const SmallVectorImpl<StringRef> &CandidateTriples, 2669 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) { 2670 if (!D.getVFS().exists(concat(D.SysRoot, GentooConfigDir))) 2671 return false; 2672 2673 for (StringRef CandidateTriple : CandidateTriples) { 2674 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple)) 2675 return true; 2676 } 2677 2678 for (StringRef CandidateTriple : CandidateBiarchTriples) { 2679 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true)) 2680 return true; 2681 } 2682 return false; 2683 } 2684 2685 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig( 2686 const llvm::Triple &TargetTriple, const ArgList &Args, 2687 StringRef CandidateTriple, bool NeedsBiarchSuffix) { 2688 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File = 2689 D.getVFS().getBufferForFile(concat(D.SysRoot, GentooConfigDir, 2690 "/config-" + CandidateTriple.str())); 2691 if (File) { 2692 SmallVector<StringRef, 2> Lines; 2693 File.get()->getBuffer().split(Lines, "\n"); 2694 for (StringRef Line : Lines) { 2695 Line = Line.trim(); 2696 // CURRENT=triple-version 2697 if (!Line.consume_front("CURRENT=")) 2698 continue; 2699 // Process the config file pointed to by CURRENT. 2700 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile = 2701 D.getVFS().getBufferForFile( 2702 concat(D.SysRoot, GentooConfigDir, "/" + Line)); 2703 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-'); 2704 // List of paths to scan for libraries. 2705 SmallVector<StringRef, 4> GentooScanPaths; 2706 // Scan the Config file to find installed GCC libraries path. 2707 // Typical content of the GCC config file: 2708 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/ 2709 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32" 2710 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man" 2711 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info" 2712 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4" 2713 // We are looking for the paths listed in LDPATH=... . 2714 if (ConfigFile) { 2715 SmallVector<StringRef, 2> ConfigLines; 2716 ConfigFile.get()->getBuffer().split(ConfigLines, "\n"); 2717 for (StringRef ConfLine : ConfigLines) { 2718 ConfLine = ConfLine.trim(); 2719 if (ConfLine.consume_front("LDPATH=")) { 2720 // Drop '"' from front and back if present. 2721 ConfLine.consume_back("\""); 2722 ConfLine.consume_front("\""); 2723 // Get all paths sperated by ':' 2724 ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false); 2725 } 2726 } 2727 } 2728 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}. 2729 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/" 2730 + ActiveVersion.second.str(); 2731 GentooScanPaths.push_back(StringRef(basePath)); 2732 2733 // Scan all paths for GCC libraries. 2734 for (const auto &GentooScanPath : GentooScanPaths) { 2735 std::string GentooPath = concat(D.SysRoot, GentooScanPath); 2736 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) { 2737 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath, 2738 NeedsBiarchSuffix)) 2739 continue; 2740 2741 Version = GCCVersion::Parse(ActiveVersion.second); 2742 GCCInstallPath = GentooPath; 2743 GCCParentLibPath = GentooPath + std::string("/../../.."); 2744 GCCTriple.setTriple(ActiveVersion.first); 2745 IsValid = true; 2746 return true; 2747 } 2748 } 2749 } 2750 } 2751 2752 return false; 2753 } 2754 2755 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple, 2756 const ArgList &Args) 2757 : ToolChain(D, Triple, Args), GCCInstallation(D), 2758 CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args) { 2759 getProgramPaths().push_back(getDriver().getInstalledDir()); 2760 if (getDriver().getInstalledDir() != getDriver().Dir) 2761 getProgramPaths().push_back(getDriver().Dir); 2762 } 2763 2764 Generic_GCC::~Generic_GCC() {} 2765 2766 Tool *Generic_GCC::getTool(Action::ActionClass AC) const { 2767 switch (AC) { 2768 case Action::PreprocessJobClass: 2769 if (!Preprocess) 2770 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this)); 2771 return Preprocess.get(); 2772 case Action::CompileJobClass: 2773 if (!Compile) 2774 Compile.reset(new tools::gcc::Compiler(*this)); 2775 return Compile.get(); 2776 default: 2777 return ToolChain::getTool(AC); 2778 } 2779 } 2780 2781 Tool *Generic_GCC::buildAssembler() const { 2782 return new tools::gnutools::Assembler(*this); 2783 } 2784 2785 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); } 2786 2787 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const { 2788 // Print the information about how we detected the GCC installation. 2789 GCCInstallation.print(OS); 2790 CudaInstallation.print(OS); 2791 RocmInstallation.print(OS); 2792 } 2793 2794 bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const { 2795 switch (getArch()) { 2796 case llvm::Triple::aarch64: 2797 case llvm::Triple::ppc: 2798 case llvm::Triple::ppcle: 2799 case llvm::Triple::ppc64: 2800 case llvm::Triple::ppc64le: 2801 case llvm::Triple::x86: 2802 case llvm::Triple::x86_64: 2803 return true; 2804 default: 2805 return false; 2806 } 2807 } 2808 2809 bool Generic_GCC::isPICDefault() const { 2810 switch (getArch()) { 2811 case llvm::Triple::x86_64: 2812 return getTriple().isOSWindows(); 2813 case llvm::Triple::mips64: 2814 case llvm::Triple::mips64el: 2815 return true; 2816 default: 2817 return false; 2818 } 2819 } 2820 2821 bool Generic_GCC::isPIEDefault(const llvm::opt::ArgList &Args) const { 2822 return false; 2823 } 2824 2825 bool Generic_GCC::isPICDefaultForced() const { 2826 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows(); 2827 } 2828 2829 bool Generic_GCC::IsIntegratedAssemblerDefault() const { 2830 switch (getTriple().getArch()) { 2831 case llvm::Triple::aarch64: 2832 case llvm::Triple::aarch64_be: 2833 case llvm::Triple::arm: 2834 case llvm::Triple::armeb: 2835 case llvm::Triple::avr: 2836 case llvm::Triple::bpfel: 2837 case llvm::Triple::bpfeb: 2838 case llvm::Triple::csky: 2839 case llvm::Triple::hexagon: 2840 case llvm::Triple::lanai: 2841 case llvm::Triple::m68k: 2842 case llvm::Triple::mips: 2843 case llvm::Triple::mipsel: 2844 case llvm::Triple::mips64: 2845 case llvm::Triple::mips64el: 2846 case llvm::Triple::msp430: 2847 case llvm::Triple::ppc: 2848 case llvm::Triple::ppcle: 2849 case llvm::Triple::ppc64: 2850 case llvm::Triple::ppc64le: 2851 case llvm::Triple::riscv32: 2852 case llvm::Triple::riscv64: 2853 case llvm::Triple::sparc: 2854 case llvm::Triple::sparcel: 2855 case llvm::Triple::sparcv9: 2856 case llvm::Triple::systemz: 2857 case llvm::Triple::thumb: 2858 case llvm::Triple::thumbeb: 2859 case llvm::Triple::ve: 2860 case llvm::Triple::x86: 2861 case llvm::Triple::x86_64: 2862 return true; 2863 default: 2864 return false; 2865 } 2866 } 2867 2868 void Generic_GCC::PushPPaths(ToolChain::path_list &PPaths) { 2869 // Cross-compiling binutils and GCC installations (vanilla and openSUSE at 2870 // least) put various tools in a triple-prefixed directory off of the parent 2871 // of the GCC installation. We use the GCC triple here to ensure that we end 2872 // up with tools that support the same amount of cross compiling as the 2873 // detected GCC installation. For example, if we find a GCC installation 2874 // targeting x86_64, but it is a bi-arch GCC installation, it can also be 2875 // used to target i386. 2876 if (GCCInstallation.isValid()) { 2877 PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" + 2878 GCCInstallation.getTriple().str() + "/bin") 2879 .str()); 2880 } 2881 } 2882 2883 void Generic_GCC::AddMultilibPaths(const Driver &D, 2884 const std::string &SysRoot, 2885 const std::string &OSLibDir, 2886 const std::string &MultiarchTriple, 2887 path_list &Paths) { 2888 // Add the multilib suffixed paths where they are available. 2889 if (GCCInstallation.isValid()) { 2890 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2891 const std::string &LibPath = 2892 std::string(GCCInstallation.getParentLibPath()); 2893 2894 // Sourcery CodeBench MIPS toolchain holds some libraries under 2895 // a biarch-like suffix of the GCC installation. 2896 if (const auto &PathsCallback = Multilibs.filePathsCallback()) 2897 for (const auto &Path : PathsCallback(SelectedMultilib)) 2898 addPathIfExists(D, GCCInstallation.getInstallPath() + Path, Paths); 2899 2900 // Add lib/gcc/$triple/$version, with an optional /multilib suffix. 2901 addPathIfExists( 2902 D, GCCInstallation.getInstallPath() + SelectedMultilib.gccSuffix(), 2903 Paths); 2904 2905 // Add lib/gcc/$triple/$libdir 2906 // For GCC built with --enable-version-specific-runtime-libs. 2907 addPathIfExists(D, GCCInstallation.getInstallPath() + "/../" + OSLibDir, 2908 Paths); 2909 2910 // GCC cross compiling toolchains will install target libraries which ship 2911 // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as 2912 // any part of the GCC installation in 2913 // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat 2914 // debatable, but is the reality today. We need to search this tree even 2915 // when we have a sysroot somewhere else. It is the responsibility of 2916 // whomever is doing the cross build targeting a sysroot using a GCC 2917 // installation that is *not* within the system root to ensure two things: 2918 // 2919 // 1) Any DSOs that are linked in from this tree or from the install path 2920 // above must be present on the system root and found via an 2921 // appropriate rpath. 2922 // 2) There must not be libraries installed into 2923 // <prefix>/<triple>/<libdir> unless they should be preferred over 2924 // those within the system root. 2925 // 2926 // Note that this matches the GCC behavior. See the below comment for where 2927 // Clang diverges from GCC's behavior. 2928 addPathIfExists(D, 2929 LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir + 2930 SelectedMultilib.osSuffix(), 2931 Paths); 2932 2933 // If the GCC installation we found is inside of the sysroot, we want to 2934 // prefer libraries installed in the parent prefix of the GCC installation. 2935 // It is important to *not* use these paths when the GCC installation is 2936 // outside of the system root as that can pick up unintended libraries. 2937 // This usually happens when there is an external cross compiler on the 2938 // host system, and a more minimal sysroot available that is the target of 2939 // the cross. Note that GCC does include some of these directories in some 2940 // configurations but this seems somewhere between questionable and simply 2941 // a bug. 2942 if (StringRef(LibPath).startswith(SysRoot)) 2943 addPathIfExists(D, LibPath + "/../" + OSLibDir, Paths); 2944 } 2945 } 2946 2947 void Generic_GCC::AddMultiarchPaths(const Driver &D, 2948 const std::string &SysRoot, 2949 const std::string &OSLibDir, 2950 path_list &Paths) { 2951 if (GCCInstallation.isValid()) { 2952 const std::string &LibPath = 2953 std::string(GCCInstallation.getParentLibPath()); 2954 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2955 const Multilib &Multilib = GCCInstallation.getMultilib(); 2956 addPathIfExists( 2957 D, LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(), 2958 Paths); 2959 } 2960 } 2961 2962 void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs, 2963 ArgStringList &CC1Args) const { 2964 // Add include directories specific to the selected multilib set and multilib. 2965 if (!GCCInstallation.isValid()) 2966 return; 2967 // gcc TOOL_INCLUDE_DIR. 2968 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2969 std::string LibPath(GCCInstallation.getParentLibPath()); 2970 addSystemInclude(DriverArgs, CC1Args, 2971 Twine(LibPath) + "/../" + GCCTriple.str() + "/include"); 2972 2973 const auto &Callback = Multilibs.includeDirsCallback(); 2974 if (Callback) { 2975 for (const auto &Path : Callback(GCCInstallation.getMultilib())) 2976 addExternCSystemIncludeIfExists(DriverArgs, CC1Args, 2977 GCCInstallation.getInstallPath() + Path); 2978 } 2979 } 2980 2981 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 2982 ArgStringList &CC1Args) const { 2983 if (DriverArgs.hasArg(options::OPT_nostdinc, options::OPT_nostdincxx, 2984 options::OPT_nostdlibinc)) 2985 return; 2986 2987 switch (GetCXXStdlibType(DriverArgs)) { 2988 case ToolChain::CST_Libcxx: 2989 addLibCxxIncludePaths(DriverArgs, CC1Args); 2990 break; 2991 2992 case ToolChain::CST_Libstdcxx: 2993 addLibStdCxxIncludePaths(DriverArgs, CC1Args); 2994 break; 2995 } 2996 } 2997 2998 void 2999 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 3000 llvm::opt::ArgStringList &CC1Args) const { 3001 const Driver &D = getDriver(); 3002 std::string SysRoot = computeSysRoot(); 3003 std::string Target = getTripleString(); 3004 3005 auto AddIncludePath = [&](std::string Path) { 3006 std::string Version = detectLibcxxVersion(Path); 3007 if (Version.empty()) 3008 return false; 3009 3010 // First add the per-target include path if it exists. 3011 std::string TargetDir = Path + "/" + Target + "/c++/" + Version; 3012 if (D.getVFS().exists(TargetDir)) 3013 addSystemInclude(DriverArgs, CC1Args, TargetDir); 3014 3015 // Second add the generic one. 3016 addSystemInclude(DriverArgs, CC1Args, Path + "/c++/" + Version); 3017 return true; 3018 }; 3019 3020 // Android never uses the libc++ headers installed alongside the toolchain, 3021 // which are generally incompatible with the NDK libraries anyway. 3022 if (!getTriple().isAndroid()) 3023 if (AddIncludePath(getDriver().Dir + "/../include")) 3024 return; 3025 // If this is a development, non-installed, clang, libcxx will 3026 // not be found at ../include/c++ but it likely to be found at 3027 // one of the following two locations: 3028 if (AddIncludePath(concat(SysRoot, "/usr/local/include"))) 3029 return; 3030 if (AddIncludePath(concat(SysRoot, "/usr/include"))) 3031 return; 3032 } 3033 3034 bool Generic_GCC::addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple, 3035 Twine IncludeSuffix, 3036 const llvm::opt::ArgList &DriverArgs, 3037 llvm::opt::ArgStringList &CC1Args, 3038 bool DetectDebian) const { 3039 if (!getVFS().exists(IncludeDir)) 3040 return false; 3041 3042 // Debian native gcc uses g++-multiarch-incdir.diff which uses 3043 // include/x86_64-linux-gnu/c++/10$IncludeSuffix instead of 3044 // include/c++/10/x86_64-linux-gnu$IncludeSuffix. 3045 std::string Dir = IncludeDir.str(); 3046 StringRef Include = 3047 llvm::sys::path::parent_path(llvm::sys::path::parent_path(Dir)); 3048 std::string Path = 3049 (Include + "/" + Triple + Dir.substr(Include.size()) + IncludeSuffix) 3050 .str(); 3051 if (DetectDebian && !getVFS().exists(Path)) 3052 return false; 3053 3054 // GPLUSPLUS_INCLUDE_DIR 3055 addSystemInclude(DriverArgs, CC1Args, IncludeDir); 3056 // GPLUSPLUS_TOOL_INCLUDE_DIR. If Triple is not empty, add a target-dependent 3057 // include directory. 3058 if (DetectDebian) 3059 addSystemInclude(DriverArgs, CC1Args, Path); 3060 else if (!Triple.empty()) 3061 addSystemInclude(DriverArgs, CC1Args, 3062 IncludeDir + "/" + Triple + IncludeSuffix); 3063 // GPLUSPLUS_BACKWARD_INCLUDE_DIR 3064 addSystemInclude(DriverArgs, CC1Args, IncludeDir + "/backward"); 3065 return true; 3066 } 3067 3068 bool Generic_GCC::addGCCLibStdCxxIncludePaths( 3069 const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, 3070 StringRef DebianMultiarch) const { 3071 assert(GCCInstallation.isValid()); 3072 3073 // By default, look for the C++ headers in an include directory adjacent to 3074 // the lib directory of the GCC installation. Note that this is expect to be 3075 // equivalent to '/usr/include/c++/X.Y' in almost all cases. 3076 StringRef LibDir = GCCInstallation.getParentLibPath(); 3077 StringRef InstallDir = GCCInstallation.getInstallPath(); 3078 StringRef TripleStr = GCCInstallation.getTriple().str(); 3079 const Multilib &Multilib = GCCInstallation.getMultilib(); 3080 const GCCVersion &Version = GCCInstallation.getVersion(); 3081 3082 // Try /../$triple/include/c++/$version (gcc --print-multiarch is not empty). 3083 if (addLibStdCXXIncludePaths( 3084 LibDir.str() + "/../" + TripleStr + "/include/c++/" + Version.Text, 3085 TripleStr, Multilib.includeSuffix(), DriverArgs, CC1Args)) 3086 return true; 3087 3088 // Try /gcc/$triple/$version/include/c++/ (gcc --print-multiarch is not 3089 // empty). Like above but for GCC built with 3090 // --enable-version-specific-runtime-libs. 3091 if (addLibStdCXXIncludePaths(LibDir.str() + "/gcc/" + TripleStr + "/" + 3092 Version.Text + "/include/c++/", 3093 TripleStr, Multilib.includeSuffix(), DriverArgs, 3094 CC1Args)) 3095 return true; 3096 3097 // Detect Debian g++-multiarch-incdir.diff. 3098 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text, 3099 DebianMultiarch, Multilib.includeSuffix(), 3100 DriverArgs, CC1Args, /*Debian=*/true)) 3101 return true; 3102 3103 // Try /../include/c++/$version (gcc --print-multiarch is empty). 3104 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text, 3105 TripleStr, Multilib.includeSuffix(), DriverArgs, 3106 CC1Args)) 3107 return true; 3108 3109 // Otherwise, fall back on a bunch of options which don't use multiarch 3110 // layouts for simplicity. 3111 const std::string LibStdCXXIncludePathCandidates[] = { 3112 // Gentoo is weird and places its headers inside the GCC install, 3113 // so if the first attempt to find the headers fails, try these patterns. 3114 InstallDir.str() + "/include/g++-v" + Version.Text, 3115 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." + 3116 Version.MinorStr, 3117 InstallDir.str() + "/include/g++-v" + Version.MajorStr, 3118 }; 3119 3120 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) { 3121 if (addLibStdCXXIncludePaths(IncludePath, TripleStr, 3122 Multilib.includeSuffix(), DriverArgs, CC1Args)) 3123 return true; 3124 } 3125 return false; 3126 } 3127 3128 void 3129 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 3130 llvm::opt::ArgStringList &CC1Args) const { 3131 if (GCCInstallation.isValid()) { 3132 addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args, 3133 GCCInstallation.getTriple().str()); 3134 } 3135 } 3136 3137 llvm::opt::DerivedArgList * 3138 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef, 3139 Action::OffloadKind DeviceOffloadKind) const { 3140 3141 // If this tool chain is used for an OpenMP offloading device we have to make 3142 // sure we always generate a shared library regardless of the commands the 3143 // user passed to the host. This is required because the runtime library 3144 // is required to load the device image dynamically at run time. 3145 if (DeviceOffloadKind == Action::OFK_OpenMP) { 3146 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs()); 3147 const OptTable &Opts = getDriver().getOpts(); 3148 3149 // Request the shared library. Given that these options are decided 3150 // implicitly, they do not refer to any base argument. 3151 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared)); 3152 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC)); 3153 3154 // Filter all the arguments we don't care passing to the offloading 3155 // toolchain as they can mess up with the creation of a shared library. 3156 for (auto *A : Args) { 3157 switch ((options::ID)A->getOption().getID()) { 3158 default: 3159 DAL->append(A); 3160 break; 3161 case options::OPT_shared: 3162 case options::OPT_dynamic: 3163 case options::OPT_static: 3164 case options::OPT_fPIC: 3165 case options::OPT_fno_PIC: 3166 case options::OPT_fpic: 3167 case options::OPT_fno_pic: 3168 case options::OPT_fPIE: 3169 case options::OPT_fno_PIE: 3170 case options::OPT_fpie: 3171 case options::OPT_fno_pie: 3172 break; 3173 } 3174 } 3175 return DAL; 3176 } 3177 return nullptr; 3178 } 3179 3180 void Generic_ELF::anchor() {} 3181 3182 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs, 3183 ArgStringList &CC1Args, 3184 Action::OffloadKind) const { 3185 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array, 3186 options::OPT_fno_use_init_array, true)) 3187 CC1Args.push_back("-fno-use-init-array"); 3188 } 3189