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