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