1 //===--- Gnu.cpp - Gnu Tool and ToolChain Implementations -------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "Gnu.h" 11 #include "Arch/ARM.h" 12 #include "Arch/Mips.h" 13 #include "Arch/PPC.h" 14 #include "Arch/RISCV.h" 15 #include "Arch/Sparc.h" 16 #include "Arch/SystemZ.h" 17 #include "CommonArgs.h" 18 #include "Linux.h" 19 #include "clang/Basic/VirtualFileSystem.h" 20 #include "clang/Config/config.h" // for GCC_INSTALL_PREFIX 21 #include "clang/Driver/Compilation.h" 22 #include "clang/Driver/Driver.h" 23 #include "clang/Driver/DriverDiagnostic.h" 24 #include "clang/Driver/Options.h" 25 #include "clang/Driver/Tool.h" 26 #include "llvm/Option/ArgList.h" 27 #include "llvm/Support/CodeGen.h" 28 #include "llvm/Support/Path.h" 29 #include "llvm/Support/TargetParser.h" 30 #include <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 void tools::GnuTool::anchor() {} 38 39 static bool forwardToGCC(const Option &O) { 40 // Don't forward inputs from the original command line. They are added from 41 // InputInfoList. 42 return O.getKind() != Option::InputClass && 43 !O.hasFlag(options::DriverOption) && !O.hasFlag(options::LinkerInput); 44 } 45 46 // Switch CPU names not recognized by GNU assembler to a close CPU that it does 47 // recognize, instead of a lower march from being picked in the absence of a cpu 48 // flag. 49 static void normalizeCPUNamesForAssembler(const ArgList &Args, 50 ArgStringList &CmdArgs) { 51 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) { 52 StringRef CPUArg(A->getValue()); 53 if (CPUArg.equals_lower("krait")) 54 CmdArgs.push_back("-mcpu=cortex-a15"); 55 else if(CPUArg.equals_lower("kryo")) 56 CmdArgs.push_back("-mcpu=cortex-a57"); 57 else 58 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ); 59 } 60 } 61 62 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA, 63 const InputInfo &Output, 64 const InputInfoList &Inputs, 65 const ArgList &Args, 66 const char *LinkingOutput) const { 67 const Driver &D = getToolChain().getDriver(); 68 ArgStringList CmdArgs; 69 70 for (const auto &A : Args) { 71 if (forwardToGCC(A->getOption())) { 72 // It is unfortunate that we have to claim here, as this means 73 // we will basically never report anything interesting for 74 // platforms using a generic gcc, even if we are just using gcc 75 // to get to the assembler. 76 A->claim(); 77 78 // Don't forward any -g arguments to assembly steps. 79 if (isa<AssembleJobAction>(JA) && 80 A->getOption().matches(options::OPT_g_Group)) 81 continue; 82 83 // Don't forward any -W arguments to assembly and link steps. 84 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) && 85 A->getOption().matches(options::OPT_W_Group)) 86 continue; 87 88 // Don't forward -mno-unaligned-access since GCC doesn't understand 89 // it and because it doesn't affect the assembly or link steps. 90 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) && 91 (A->getOption().matches(options::OPT_munaligned_access) || 92 A->getOption().matches(options::OPT_mno_unaligned_access))) 93 continue; 94 95 A->render(Args, CmdArgs); 96 } 97 } 98 99 RenderExtraToolArgs(JA, CmdArgs); 100 101 // If using a driver driver, force the arch. 102 if (getToolChain().getTriple().isOSDarwin()) { 103 CmdArgs.push_back("-arch"); 104 CmdArgs.push_back( 105 Args.MakeArgString(getToolChain().getDefaultUniversalArchName())); 106 } 107 108 // Try to force gcc to match the tool chain we want, if we recognize 109 // the arch. 110 // 111 // FIXME: The triple class should directly provide the information we want 112 // here. 113 switch (getToolChain().getArch()) { 114 default: 115 break; 116 case llvm::Triple::x86: 117 case llvm::Triple::ppc: 118 CmdArgs.push_back("-m32"); 119 break; 120 case llvm::Triple::x86_64: 121 case llvm::Triple::ppc64: 122 case llvm::Triple::ppc64le: 123 CmdArgs.push_back("-m64"); 124 break; 125 case llvm::Triple::sparcel: 126 CmdArgs.push_back("-EL"); 127 break; 128 } 129 130 if (Output.isFilename()) { 131 CmdArgs.push_back("-o"); 132 CmdArgs.push_back(Output.getFilename()); 133 } else { 134 assert(Output.isNothing() && "Unexpected output"); 135 CmdArgs.push_back("-fsyntax-only"); 136 } 137 138 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 139 140 // Only pass -x if gcc will understand it; otherwise hope gcc 141 // understands the suffix correctly. The main use case this would go 142 // wrong in is for linker inputs if they happened to have an odd 143 // suffix; really the only way to get this to happen is a command 144 // like '-x foobar a.c' which will treat a.c like a linker input. 145 // 146 // FIXME: For the linker case specifically, can we safely convert 147 // inputs into '-Wl,' options? 148 for (const auto &II : Inputs) { 149 // Don't try to pass LLVM or AST inputs to a generic gcc. 150 if (types::isLLVMIR(II.getType())) 151 D.Diag(clang::diag::err_drv_no_linker_llvm_support) 152 << getToolChain().getTripleString(); 153 else if (II.getType() == types::TY_AST) 154 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString(); 155 else if (II.getType() == types::TY_ModuleFile) 156 D.Diag(diag::err_drv_no_module_support) 157 << getToolChain().getTripleString(); 158 159 if (types::canTypeBeUserSpecified(II.getType())) { 160 CmdArgs.push_back("-x"); 161 CmdArgs.push_back(types::getTypeName(II.getType())); 162 } 163 164 if (II.isFilename()) 165 CmdArgs.push_back(II.getFilename()); 166 else { 167 const Arg &A = II.getInputArg(); 168 169 // Reverse translate some rewritten options. 170 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) { 171 CmdArgs.push_back("-lstdc++"); 172 continue; 173 } 174 175 // Don't render as input, we need gcc to do the translations. 176 A.render(Args, CmdArgs); 177 } 178 } 179 180 const std::string &customGCCName = D.getCCCGenericGCCName(); 181 const char *GCCName; 182 if (!customGCCName.empty()) 183 GCCName = customGCCName.c_str(); 184 else if (D.CCCIsCXX()) { 185 GCCName = "g++"; 186 } else 187 GCCName = "gcc"; 188 189 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName)); 190 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); 191 } 192 193 void tools::gcc::Preprocessor::RenderExtraToolArgs( 194 const JobAction &JA, ArgStringList &CmdArgs) const { 195 CmdArgs.push_back("-E"); 196 } 197 198 void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA, 199 ArgStringList &CmdArgs) const { 200 const Driver &D = getToolChain().getDriver(); 201 202 switch (JA.getType()) { 203 // If -flto, etc. are present then make sure not to force assembly output. 204 case types::TY_LLVM_IR: 205 case types::TY_LTO_IR: 206 case types::TY_LLVM_BC: 207 case types::TY_LTO_BC: 208 CmdArgs.push_back("-c"); 209 break; 210 // We assume we've got an "integrated" assembler in that gcc will produce an 211 // object file itself. 212 case types::TY_Object: 213 CmdArgs.push_back("-c"); 214 break; 215 case types::TY_PP_Asm: 216 CmdArgs.push_back("-S"); 217 break; 218 case types::TY_Nothing: 219 CmdArgs.push_back("-fsyntax-only"); 220 break; 221 default: 222 D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType()); 223 } 224 } 225 226 void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA, 227 ArgStringList &CmdArgs) const { 228 // The types are (hopefully) good enough. 229 } 230 231 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) { 232 switch (T.getArch()) { 233 case llvm::Triple::x86: 234 if (T.isOSIAMCU()) 235 return "elf_iamcu"; 236 return "elf_i386"; 237 case llvm::Triple::aarch64: 238 return "aarch64linux"; 239 case llvm::Triple::aarch64_be: 240 return "aarch64_be_linux"; 241 case llvm::Triple::arm: 242 case llvm::Triple::thumb: 243 return "armelf_linux_eabi"; 244 case llvm::Triple::armeb: 245 case llvm::Triple::thumbeb: 246 return "armelfb_linux_eabi"; 247 case llvm::Triple::ppc: 248 return "elf32ppclinux"; 249 case llvm::Triple::ppc64: 250 return "elf64ppc"; 251 case llvm::Triple::ppc64le: 252 return "elf64lppc"; 253 case llvm::Triple::riscv32: 254 return "elf32lriscv"; 255 case llvm::Triple::riscv64: 256 return "elf64lriscv"; 257 case llvm::Triple::sparc: 258 case llvm::Triple::sparcel: 259 return "elf32_sparc"; 260 case llvm::Triple::sparcv9: 261 return "elf64_sparc"; 262 case llvm::Triple::mips: 263 return "elf32btsmip"; 264 case llvm::Triple::mipsel: 265 return "elf32ltsmip"; 266 case llvm::Triple::mips64: 267 if (tools::mips::hasMipsAbiArg(Args, "n32")) 268 return "elf32btsmipn32"; 269 return "elf64btsmip"; 270 case llvm::Triple::mips64el: 271 if (tools::mips::hasMipsAbiArg(Args, "n32")) 272 return "elf32ltsmipn32"; 273 return "elf64ltsmip"; 274 case llvm::Triple::systemz: 275 return "elf64_s390"; 276 case llvm::Triple::x86_64: 277 if (T.getEnvironment() == llvm::Triple::GNUX32) 278 return "elf32_x86_64"; 279 return "elf_x86_64"; 280 default: 281 return nullptr; 282 } 283 } 284 285 static bool getPIE(const ArgList &Args, const toolchains::Linux &ToolChain) { 286 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_static) || 287 Args.hasArg(options::OPT_r)) 288 return false; 289 290 Arg *A = Args.getLastArg(options::OPT_pie, options::OPT_no_pie, 291 options::OPT_nopie); 292 if (!A) 293 return ToolChain.isPIEDefault(); 294 return A->getOption().matches(options::OPT_pie); 295 } 296 297 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA, 298 const InputInfo &Output, 299 const InputInfoList &Inputs, 300 const ArgList &Args, 301 const char *LinkingOutput) const { 302 const toolchains::Linux &ToolChain = 303 static_cast<const toolchains::Linux &>(getToolChain()); 304 const Driver &D = ToolChain.getDriver(); 305 306 const llvm::Triple &Triple = getToolChain().getEffectiveTriple(); 307 308 const llvm::Triple::ArchType Arch = ToolChain.getArch(); 309 const bool isAndroid = ToolChain.getTriple().isAndroid(); 310 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU(); 311 const bool IsPIE = getPIE(Args, ToolChain); 312 const bool HasCRTBeginEndFiles = 313 ToolChain.getTriple().hasEnvironment() || 314 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies); 315 316 ArgStringList CmdArgs; 317 318 // Silence warning for "clang -g foo.o -o foo" 319 Args.ClaimAllArgs(options::OPT_g_Group); 320 // and "clang -emit-llvm foo.o -o foo" 321 Args.ClaimAllArgs(options::OPT_emit_llvm); 322 // and for "clang -w foo.o -o foo". Other warning options are already 323 // handled somewhere else. 324 Args.ClaimAllArgs(options::OPT_w); 325 326 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath()); 327 if (llvm::sys::path::stem(Exec) == "lld") { 328 CmdArgs.push_back("-flavor"); 329 CmdArgs.push_back("old-gnu"); 330 CmdArgs.push_back("-target"); 331 CmdArgs.push_back(Args.MakeArgString(getToolChain().getTripleString())); 332 } 333 334 if (!D.SysRoot.empty()) 335 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 336 337 if (IsPIE) 338 CmdArgs.push_back("-pie"); 339 340 if (Args.hasArg(options::OPT_rdynamic)) 341 CmdArgs.push_back("-export-dynamic"); 342 343 if (Args.hasArg(options::OPT_s)) 344 CmdArgs.push_back("-s"); 345 346 if (Arch == llvm::Triple::armeb || Arch == llvm::Triple::thumbeb) 347 arm::appendEBLinkFlags(Args, CmdArgs, Triple); 348 349 // Most Android ARM64 targets should enable the linker fix for erratum 350 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag. 351 if (Arch == llvm::Triple::aarch64 && isAndroid) { 352 std::string CPU = getCPUName(Args, Triple); 353 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53") 354 CmdArgs.push_back("--fix-cortex-a53-843419"); 355 } 356 357 for (const auto &Opt : ToolChain.ExtraOpts) 358 CmdArgs.push_back(Opt.c_str()); 359 360 CmdArgs.push_back("--eh-frame-hdr"); 361 362 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) { 363 CmdArgs.push_back("-m"); 364 CmdArgs.push_back(LDMOption); 365 } else { 366 D.Diag(diag::err_target_unknown_triple) << Triple.str(); 367 return; 368 } 369 370 if (Args.hasArg(options::OPT_static)) { 371 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb || 372 Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb) 373 CmdArgs.push_back("-Bstatic"); 374 else 375 CmdArgs.push_back("-static"); 376 } else if (Args.hasArg(options::OPT_shared)) { 377 CmdArgs.push_back("-shared"); 378 } 379 380 if (!Args.hasArg(options::OPT_static)) { 381 if (Args.hasArg(options::OPT_rdynamic)) 382 CmdArgs.push_back("-export-dynamic"); 383 384 if (!Args.hasArg(options::OPT_shared)) { 385 const std::string Loader = 386 D.DyldPrefix + ToolChain.getDynamicLinker(Args); 387 CmdArgs.push_back("-dynamic-linker"); 388 CmdArgs.push_back(Args.MakeArgString(Loader)); 389 } 390 } 391 392 CmdArgs.push_back("-o"); 393 CmdArgs.push_back(Output.getFilename()); 394 395 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) { 396 if (!isAndroid && !IsIAMCU) { 397 const char *crt1 = nullptr; 398 if (!Args.hasArg(options::OPT_shared)) { 399 if (Args.hasArg(options::OPT_pg)) 400 crt1 = "gcrt1.o"; 401 else if (IsPIE) 402 crt1 = "Scrt1.o"; 403 else 404 crt1 = "crt1.o"; 405 } 406 if (crt1) 407 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1))); 408 409 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o"))); 410 } 411 412 if (IsIAMCU) 413 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o"))); 414 else { 415 const char *crtbegin; 416 if (Args.hasArg(options::OPT_static)) 417 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o"; 418 else if (Args.hasArg(options::OPT_shared)) 419 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o"; 420 else if (IsPIE) 421 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o"; 422 else 423 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o"; 424 425 if (HasCRTBeginEndFiles) 426 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtbegin))); 427 } 428 429 // Add crtfastmath.o if available and fast math is enabled. 430 ToolChain.AddFastMathRuntimeIfAvailable(Args, CmdArgs); 431 } 432 433 Args.AddAllArgs(CmdArgs, options::OPT_L); 434 Args.AddAllArgs(CmdArgs, options::OPT_u); 435 436 ToolChain.AddFilePathLibArgs(Args, CmdArgs); 437 438 if (D.isUsingLTO()) { 439 assert(!Inputs.empty() && "Must have at least one input."); 440 AddGoldPlugin(ToolChain, Args, CmdArgs, Output, Inputs[0], 441 D.getLTOMode() == LTOK_Thin); 442 } 443 444 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle)) 445 CmdArgs.push_back("--no-demangle"); 446 447 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs); 448 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs); 449 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA); 450 // The profile runtime also needs access to system libraries. 451 getToolChain().addProfileRTLibs(Args, CmdArgs); 452 453 if (D.CCCIsCXX() && 454 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) { 455 if (ToolChain.ShouldLinkCXXStdlib(Args)) { 456 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) && 457 !Args.hasArg(options::OPT_static); 458 if (OnlyLibstdcxxStatic) 459 CmdArgs.push_back("-Bstatic"); 460 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs); 461 if (OnlyLibstdcxxStatic) 462 CmdArgs.push_back("-Bdynamic"); 463 } 464 CmdArgs.push_back("-lm"); 465 } 466 // Silence warnings when linking C code with a C++ '-stdlib' argument. 467 Args.ClaimAllArgs(options::OPT_stdlib_EQ); 468 469 if (!Args.hasArg(options::OPT_nostdlib)) { 470 if (!Args.hasArg(options::OPT_nodefaultlibs)) { 471 if (Args.hasArg(options::OPT_static)) 472 CmdArgs.push_back("--start-group"); 473 474 if (NeedsSanitizerDeps) 475 linkSanitizerRuntimeDeps(ToolChain, CmdArgs); 476 477 if (NeedsXRayDeps) 478 linkXRayRuntimeDeps(ToolChain, CmdArgs); 479 480 bool WantPthread = Args.hasArg(options::OPT_pthread) || 481 Args.hasArg(options::OPT_pthreads); 482 483 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that 484 // require librt. Most modern Linux platforms do, but some may not. 485 if (addOpenMPRuntime(CmdArgs, ToolChain, Args, 486 JA.isHostOffloading(Action::OFK_OpenMP), 487 /* GompNeedsRT= */ true)) 488 // OpenMP runtimes implies pthreads when using the GNU toolchain. 489 // FIXME: Does this really make sense for all GNU toolchains? 490 WantPthread = true; 491 492 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 493 494 if (WantPthread && !isAndroid) 495 CmdArgs.push_back("-lpthread"); 496 497 if (Args.hasArg(options::OPT_fsplit_stack)) 498 CmdArgs.push_back("--wrap=pthread_create"); 499 500 CmdArgs.push_back("-lc"); 501 502 // Add IAMCU specific libs, if needed. 503 if (IsIAMCU) 504 CmdArgs.push_back("-lgloss"); 505 506 if (Args.hasArg(options::OPT_static)) 507 CmdArgs.push_back("--end-group"); 508 else 509 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 510 511 // Add IAMCU specific libs (outside the group), if needed. 512 if (IsIAMCU) { 513 CmdArgs.push_back("--as-needed"); 514 CmdArgs.push_back("-lsoftfp"); 515 CmdArgs.push_back("--no-as-needed"); 516 } 517 } 518 519 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) { 520 const char *crtend; 521 if (Args.hasArg(options::OPT_shared)) 522 crtend = isAndroid ? "crtend_so.o" : "crtendS.o"; 523 else if (IsPIE) 524 crtend = isAndroid ? "crtend_android.o" : "crtendS.o"; 525 else 526 crtend = isAndroid ? "crtend_android.o" : "crtend.o"; 527 528 if (HasCRTBeginEndFiles) 529 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crtend))); 530 if (!isAndroid) 531 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o"))); 532 } 533 } 534 535 // Add OpenMP offloading linker script args if required. 536 AddOpenMPLinkerScript(getToolChain(), C, Output, Inputs, Args, CmdArgs, JA); 537 538 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); 539 } 540 541 void tools::gnutools::Assembler::ConstructJob(Compilation &C, 542 const JobAction &JA, 543 const InputInfo &Output, 544 const InputInfoList &Inputs, 545 const ArgList &Args, 546 const char *LinkingOutput) const { 547 const auto &D = getToolChain().getDriver(); 548 549 claimNoWarnArgs(Args); 550 551 ArgStringList CmdArgs; 552 553 llvm::Reloc::Model RelocationModel; 554 unsigned PICLevel; 555 bool IsPIE; 556 std::tie(RelocationModel, PICLevel, IsPIE) = 557 ParsePICArgs(getToolChain(), Args); 558 559 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) { 560 if (A->getOption().getID() == options::OPT_gz) { 561 CmdArgs.push_back("-compress-debug-sections"); 562 } else { 563 StringRef Value = A->getValue(); 564 if (Value == "none") { 565 CmdArgs.push_back("-compress-debug-sections=none"); 566 } else if (Value == "zlib" || Value == "zlib-gnu") { 567 CmdArgs.push_back( 568 Args.MakeArgString("-compress-debug-sections=" + Twine(Value))); 569 } else { 570 D.Diag(diag::err_drv_unsupported_option_argument) 571 << A->getOption().getName() << Value; 572 } 573 } 574 } 575 576 switch (getToolChain().getArch()) { 577 default: 578 break; 579 // Add --32/--64 to make sure we get the format we want. 580 // This is incomplete 581 case llvm::Triple::x86: 582 CmdArgs.push_back("--32"); 583 break; 584 case llvm::Triple::x86_64: 585 if (getToolChain().getTriple().getEnvironment() == llvm::Triple::GNUX32) 586 CmdArgs.push_back("--x32"); 587 else 588 CmdArgs.push_back("--64"); 589 break; 590 case llvm::Triple::ppc: { 591 CmdArgs.push_back("-a32"); 592 CmdArgs.push_back("-mppc"); 593 CmdArgs.push_back( 594 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple()))); 595 break; 596 } 597 case llvm::Triple::ppc64: { 598 CmdArgs.push_back("-a64"); 599 CmdArgs.push_back("-mppc64"); 600 CmdArgs.push_back( 601 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple()))); 602 break; 603 } 604 case llvm::Triple::ppc64le: { 605 CmdArgs.push_back("-a64"); 606 CmdArgs.push_back("-mppc64"); 607 CmdArgs.push_back("-mlittle-endian"); 608 CmdArgs.push_back( 609 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple()))); 610 break; 611 } 612 case llvm::Triple::riscv32: 613 case llvm::Triple::riscv64: { 614 StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple()); 615 CmdArgs.push_back("-mabi"); 616 CmdArgs.push_back(ABIName.data()); 617 if (const Arg *A = Args.getLastArg(options::OPT_march_EQ)) { 618 StringRef MArch = A->getValue(); 619 CmdArgs.push_back("-march"); 620 CmdArgs.push_back(MArch.data()); 621 } 622 break; 623 } 624 case llvm::Triple::sparc: 625 case llvm::Triple::sparcel: { 626 CmdArgs.push_back("-32"); 627 std::string CPU = getCPUName(Args, getToolChain().getTriple()); 628 CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 629 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 630 break; 631 } 632 case llvm::Triple::sparcv9: { 633 CmdArgs.push_back("-64"); 634 std::string CPU = getCPUName(Args, getToolChain().getTriple()); 635 CmdArgs.push_back(sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 636 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 637 break; 638 } 639 case llvm::Triple::arm: 640 case llvm::Triple::armeb: 641 case llvm::Triple::thumb: 642 case llvm::Triple::thumbeb: { 643 const llvm::Triple &Triple2 = getToolChain().getTriple(); 644 switch (Triple2.getSubArch()) { 645 case llvm::Triple::ARMSubArch_v7: 646 CmdArgs.push_back("-mfpu=neon"); 647 break; 648 case llvm::Triple::ARMSubArch_v8: 649 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8"); 650 break; 651 default: 652 break; 653 } 654 655 switch (arm::getARMFloatABI(getToolChain(), Args)) { 656 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!"); 657 case arm::FloatABI::Soft: 658 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft")); 659 break; 660 case arm::FloatABI::SoftFP: 661 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp")); 662 break; 663 case arm::FloatABI::Hard: 664 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard")); 665 break; 666 } 667 668 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 669 normalizeCPUNamesForAssembler(Args, CmdArgs); 670 671 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ); 672 break; 673 } 674 case llvm::Triple::aarch64: 675 case llvm::Triple::aarch64_be: { 676 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 677 normalizeCPUNamesForAssembler(Args, CmdArgs); 678 679 break; 680 } 681 case llvm::Triple::mips: 682 case llvm::Triple::mipsel: 683 case llvm::Triple::mips64: 684 case llvm::Triple::mips64el: { 685 StringRef CPUName; 686 StringRef ABIName; 687 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName); 688 ABIName = mips::getGnuCompatibleMipsABIName(ABIName); 689 690 CmdArgs.push_back("-march"); 691 CmdArgs.push_back(CPUName.data()); 692 693 CmdArgs.push_back("-mabi"); 694 CmdArgs.push_back(ABIName.data()); 695 696 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE, 697 // or -mshared (not implemented) is in effect. 698 if (RelocationModel == llvm::Reloc::Static) 699 CmdArgs.push_back("-mno-shared"); 700 701 // LLVM doesn't support -mplt yet and acts as if it is always given. 702 // However, -mplt has no effect with the N64 ABI. 703 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls)) 704 CmdArgs.push_back("-call_nonpic"); 705 706 if (getToolChain().getArch() == llvm::Triple::mips || 707 getToolChain().getArch() == llvm::Triple::mips64) 708 CmdArgs.push_back("-EB"); 709 else 710 CmdArgs.push_back("-EL"); 711 712 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) { 713 if (StringRef(A->getValue()) == "2008") 714 CmdArgs.push_back(Args.MakeArgString("-mnan=2008")); 715 } 716 717 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default. 718 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx, 719 options::OPT_mfp64)) { 720 A->claim(); 721 A->render(Args, CmdArgs); 722 } else if (mips::shouldUseFPXX( 723 Args, getToolChain().getTriple(), CPUName, ABIName, 724 mips::getMipsFloatABI(getToolChain().getDriver(), Args))) 725 CmdArgs.push_back("-mfpxx"); 726 727 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of 728 // -mno-mips16 is actually -no-mips16. 729 if (Arg *A = 730 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) { 731 if (A->getOption().matches(options::OPT_mips16)) { 732 A->claim(); 733 A->render(Args, CmdArgs); 734 } else { 735 A->claim(); 736 CmdArgs.push_back("-no-mips16"); 737 } 738 } 739 740 Args.AddLastArg(CmdArgs, options::OPT_mmicromips, 741 options::OPT_mno_micromips); 742 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp); 743 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2); 744 745 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) { 746 // Do not use AddLastArg because not all versions of MIPS assembler 747 // support -mmsa / -mno-msa options. 748 if (A->getOption().matches(options::OPT_mmsa)) 749 CmdArgs.push_back(Args.MakeArgString("-mmsa")); 750 } 751 752 Args.AddLastArg(CmdArgs, options::OPT_mhard_float, 753 options::OPT_msoft_float); 754 755 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float, 756 options::OPT_msingle_float); 757 758 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg, 759 options::OPT_mno_odd_spreg); 760 761 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 762 break; 763 } 764 case llvm::Triple::systemz: { 765 // Always pass an -march option, since our default of z10 is later 766 // than the GNU assembler's default. 767 StringRef CPUName = systemz::getSystemZTargetCPU(Args); 768 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName)); 769 break; 770 } 771 } 772 773 Args.AddAllArgs(CmdArgs, options::OPT_I); 774 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 775 776 CmdArgs.push_back("-o"); 777 CmdArgs.push_back(Output.getFilename()); 778 779 for (const auto &II : Inputs) 780 CmdArgs.push_back(II.getFilename()); 781 782 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as")); 783 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); 784 785 // Handle the debug info splitting at object creation time if we're 786 // creating an object. 787 // TODO: Currently only works on linux with newer objcopy. 788 if (Args.hasArg(options::OPT_gsplit_dwarf) && 789 getToolChain().getTriple().isOSLinux()) 790 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, 791 SplitDebugName(Args, Inputs[0])); 792 } 793 794 namespace { 795 // Filter to remove Multilibs that don't exist as a suffix to Path 796 class FilterNonExistent { 797 StringRef Base, File; 798 vfs::FileSystem &VFS; 799 800 public: 801 FilterNonExistent(StringRef Base, StringRef File, vfs::FileSystem &VFS) 802 : Base(Base), File(File), VFS(VFS) {} 803 bool operator()(const Multilib &M) { 804 return !VFS.exists(Base + M.gccSuffix() + File); 805 } 806 }; 807 } // end anonymous namespace 808 809 static bool isSoftFloatABI(const ArgList &Args) { 810 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float, 811 options::OPT_mfloat_abi_EQ); 812 if (!A) 813 return false; 814 815 return A->getOption().matches(options::OPT_msoft_float) || 816 (A->getOption().matches(options::OPT_mfloat_abi_EQ) && 817 A->getValue() == StringRef("soft")); 818 } 819 820 /// \p Flag must be a flag accepted by the driver with its leading '-' removed, 821 // otherwise '-print-multi-lib' will not emit them correctly. 822 static void addMultilibFlag(bool Enabled, const char *const Flag, 823 std::vector<std::string> &Flags) { 824 if (Enabled) 825 Flags.push_back(std::string("+") + Flag); 826 else 827 Flags.push_back(std::string("-") + Flag); 828 } 829 830 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) { 831 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb; 832 } 833 834 static bool isMips32(llvm::Triple::ArchType Arch) { 835 return Arch == llvm::Triple::mips || Arch == llvm::Triple::mipsel; 836 } 837 838 static bool isMips64(llvm::Triple::ArchType Arch) { 839 return Arch == llvm::Triple::mips64 || Arch == llvm::Triple::mips64el; 840 } 841 842 static bool isMipsEL(llvm::Triple::ArchType Arch) { 843 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el; 844 } 845 846 static bool isMips16(const ArgList &Args) { 847 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16); 848 return A && A->getOption().matches(options::OPT_mips16); 849 } 850 851 static bool isMicroMips(const ArgList &Args) { 852 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips); 853 return A && A->getOption().matches(options::OPT_mmicromips); 854 } 855 856 static bool isRISCV(llvm::Triple::ArchType Arch) { 857 return Arch == llvm::Triple::riscv32 || Arch == llvm::Triple::riscv64; 858 } 859 860 static Multilib makeMultilib(StringRef commonSuffix) { 861 return Multilib(commonSuffix, commonSuffix, commonSuffix); 862 } 863 864 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags, 865 FilterNonExistent &NonExistent, 866 DetectedMultilibs &Result) { 867 // Check for Code Sourcery toolchain multilibs 868 MultilibSet CSMipsMultilibs; 869 { 870 auto MArchMips16 = makeMultilib("/mips16").flag("+m32").flag("+mips16"); 871 872 auto MArchMicroMips = 873 makeMultilib("/micromips").flag("+m32").flag("+mmicromips"); 874 875 auto MArchDefault = makeMultilib("").flag("-mips16").flag("-mmicromips"); 876 877 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc"); 878 879 auto SoftFloat = makeMultilib("/soft-float").flag("+msoft-float"); 880 881 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008"); 882 883 auto DefaultFloat = 884 makeMultilib("").flag("-msoft-float").flag("-mnan=2008"); 885 886 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL"); 887 888 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 889 890 // Note that this one's osSuffix is "" 891 auto MAbi64 = makeMultilib("") 892 .gccSuffix("/64") 893 .includeSuffix("/64") 894 .flag("+mabi=n64") 895 .flag("-mabi=n32") 896 .flag("-m32"); 897 898 CSMipsMultilibs = 899 MultilibSet() 900 .Either(MArchMips16, MArchMicroMips, MArchDefault) 901 .Maybe(UCLibc) 902 .Either(SoftFloat, Nan2008, DefaultFloat) 903 .FilterOut("/micromips/nan2008") 904 .FilterOut("/mips16/nan2008") 905 .Either(BigEndian, LittleEndian) 906 .Maybe(MAbi64) 907 .FilterOut("/mips16.*/64") 908 .FilterOut("/micromips.*/64") 909 .FilterOut(NonExistent) 910 .setIncludeDirsCallback([](const Multilib &M) { 911 std::vector<std::string> Dirs({"/include"}); 912 if (StringRef(M.includeSuffix()).startswith("/uclibc")) 913 Dirs.push_back( 914 "/../../../../mips-linux-gnu/libc/uclibc/usr/include"); 915 else 916 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include"); 917 return Dirs; 918 }); 919 } 920 921 MultilibSet DebianMipsMultilibs; 922 { 923 Multilib MAbiN32 = 924 Multilib().gccSuffix("/n32").includeSuffix("/n32").flag("+mabi=n32"); 925 926 Multilib M64 = Multilib() 927 .gccSuffix("/64") 928 .includeSuffix("/64") 929 .flag("+m64") 930 .flag("-m32") 931 .flag("-mabi=n32"); 932 933 Multilib M32 = Multilib().flag("-m64").flag("+m32").flag("-mabi=n32"); 934 935 DebianMipsMultilibs = 936 MultilibSet().Either(M32, M64, MAbiN32).FilterOut(NonExistent); 937 } 938 939 // Sort candidates. Toolchain that best meets the directories tree goes first. 940 // Then select the first toolchains matches command line flags. 941 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs}; 942 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size()) 943 std::iter_swap(Candidates, Candidates + 1); 944 for (const MultilibSet *Candidate : Candidates) { 945 if (Candidate->select(Flags, Result.SelectedMultilib)) { 946 if (Candidate == &DebianMipsMultilibs) 947 Result.BiarchSibling = Multilib(); 948 Result.Multilibs = *Candidate; 949 return true; 950 } 951 } 952 return false; 953 } 954 955 static bool findMipsAndroidMultilibs(vfs::FileSystem &VFS, StringRef Path, 956 const Multilib::flags_list &Flags, 957 FilterNonExistent &NonExistent, 958 DetectedMultilibs &Result) { 959 960 MultilibSet AndroidMipsMultilibs = 961 MultilibSet() 962 .Maybe(Multilib("/mips-r2").flag("+march=mips32r2")) 963 .Maybe(Multilib("/mips-r6").flag("+march=mips32r6")) 964 .FilterOut(NonExistent); 965 966 MultilibSet AndroidMipselMultilibs = 967 MultilibSet() 968 .Either(Multilib().flag("+march=mips32"), 969 Multilib("/mips-r2", "", "/mips-r2").flag("+march=mips32r2"), 970 Multilib("/mips-r6", "", "/mips-r6").flag("+march=mips32r6")) 971 .FilterOut(NonExistent); 972 973 MultilibSet AndroidMips64elMultilibs = 974 MultilibSet() 975 .Either( 976 Multilib().flag("+march=mips64r6"), 977 Multilib("/32/mips-r1", "", "/mips-r1").flag("+march=mips32"), 978 Multilib("/32/mips-r2", "", "/mips-r2").flag("+march=mips32r2"), 979 Multilib("/32/mips-r6", "", "/mips-r6").flag("+march=mips32r6")) 980 .FilterOut(NonExistent); 981 982 MultilibSet *MS = &AndroidMipsMultilibs; 983 if (VFS.exists(Path + "/mips-r6")) 984 MS = &AndroidMipselMultilibs; 985 else if (VFS.exists(Path + "/32")) 986 MS = &AndroidMips64elMultilibs; 987 if (MS->select(Flags, Result.SelectedMultilib)) { 988 Result.Multilibs = *MS; 989 return true; 990 } 991 return false; 992 } 993 994 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags, 995 FilterNonExistent &NonExistent, 996 DetectedMultilibs &Result) { 997 // Musl toolchain multilibs 998 MultilibSet MuslMipsMultilibs; 999 { 1000 auto MArchMipsR2 = makeMultilib("") 1001 .osSuffix("/mips-r2-hard-musl") 1002 .flag("+EB") 1003 .flag("-EL") 1004 .flag("+march=mips32r2"); 1005 1006 auto MArchMipselR2 = makeMultilib("/mipsel-r2-hard-musl") 1007 .flag("-EB") 1008 .flag("+EL") 1009 .flag("+march=mips32r2"); 1010 1011 MuslMipsMultilibs = MultilibSet().Either(MArchMipsR2, MArchMipselR2); 1012 1013 // Specify the callback that computes the include directories. 1014 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) { 1015 return std::vector<std::string>( 1016 {"/../sysroot" + M.osSuffix() + "/usr/include"}); 1017 }); 1018 } 1019 if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilib)) { 1020 Result.Multilibs = MuslMipsMultilibs; 1021 return true; 1022 } 1023 return false; 1024 } 1025 1026 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags, 1027 FilterNonExistent &NonExistent, 1028 DetectedMultilibs &Result) { 1029 // CodeScape MTI toolchain v1.2 and early. 1030 MultilibSet MtiMipsMultilibsV1; 1031 { 1032 auto MArchMips32 = makeMultilib("/mips32") 1033 .flag("+m32") 1034 .flag("-m64") 1035 .flag("-mmicromips") 1036 .flag("+march=mips32"); 1037 1038 auto MArchMicroMips = makeMultilib("/micromips") 1039 .flag("+m32") 1040 .flag("-m64") 1041 .flag("+mmicromips"); 1042 1043 auto MArchMips64r2 = makeMultilib("/mips64r2") 1044 .flag("-m32") 1045 .flag("+m64") 1046 .flag("+march=mips64r2"); 1047 1048 auto MArchMips64 = makeMultilib("/mips64").flag("-m32").flag("+m64").flag( 1049 "-march=mips64r2"); 1050 1051 auto MArchDefault = makeMultilib("") 1052 .flag("+m32") 1053 .flag("-m64") 1054 .flag("-mmicromips") 1055 .flag("+march=mips32r2"); 1056 1057 auto Mips16 = makeMultilib("/mips16").flag("+mips16"); 1058 1059 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc"); 1060 1061 auto MAbi64 = 1062 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32"); 1063 1064 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL"); 1065 1066 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 1067 1068 auto SoftFloat = makeMultilib("/sof").flag("+msoft-float"); 1069 1070 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008"); 1071 1072 MtiMipsMultilibsV1 = 1073 MultilibSet() 1074 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64, 1075 MArchDefault) 1076 .Maybe(UCLibc) 1077 .Maybe(Mips16) 1078 .FilterOut("/mips64/mips16") 1079 .FilterOut("/mips64r2/mips16") 1080 .FilterOut("/micromips/mips16") 1081 .Maybe(MAbi64) 1082 .FilterOut("/micromips/64") 1083 .FilterOut("/mips32/64") 1084 .FilterOut("^/64") 1085 .FilterOut("/mips16/64") 1086 .Either(BigEndian, LittleEndian) 1087 .Maybe(SoftFloat) 1088 .Maybe(Nan2008) 1089 .FilterOut(".*sof/nan2008") 1090 .FilterOut(NonExistent) 1091 .setIncludeDirsCallback([](const Multilib &M) { 1092 std::vector<std::string> Dirs({"/include"}); 1093 if (StringRef(M.includeSuffix()).startswith("/uclibc")) 1094 Dirs.push_back("/../../../../sysroot/uclibc/usr/include"); 1095 else 1096 Dirs.push_back("/../../../../sysroot/usr/include"); 1097 return Dirs; 1098 }); 1099 } 1100 1101 // CodeScape IMG toolchain starting from v1.3. 1102 MultilibSet MtiMipsMultilibsV2; 1103 { 1104 auto BeHard = makeMultilib("/mips-r2-hard") 1105 .flag("+EB") 1106 .flag("-msoft-float") 1107 .flag("-mnan=2008") 1108 .flag("-muclibc"); 1109 auto BeSoft = makeMultilib("/mips-r2-soft") 1110 .flag("+EB") 1111 .flag("+msoft-float") 1112 .flag("-mnan=2008"); 1113 auto ElHard = makeMultilib("/mipsel-r2-hard") 1114 .flag("+EL") 1115 .flag("-msoft-float") 1116 .flag("-mnan=2008") 1117 .flag("-muclibc"); 1118 auto ElSoft = makeMultilib("/mipsel-r2-soft") 1119 .flag("+EL") 1120 .flag("+msoft-float") 1121 .flag("-mnan=2008") 1122 .flag("-mmicromips"); 1123 auto BeHardNan = makeMultilib("/mips-r2-hard-nan2008") 1124 .flag("+EB") 1125 .flag("-msoft-float") 1126 .flag("+mnan=2008") 1127 .flag("-muclibc"); 1128 auto ElHardNan = makeMultilib("/mipsel-r2-hard-nan2008") 1129 .flag("+EL") 1130 .flag("-msoft-float") 1131 .flag("+mnan=2008") 1132 .flag("-muclibc") 1133 .flag("-mmicromips"); 1134 auto BeHardNanUclibc = makeMultilib("/mips-r2-hard-nan2008-uclibc") 1135 .flag("+EB") 1136 .flag("-msoft-float") 1137 .flag("+mnan=2008") 1138 .flag("+muclibc"); 1139 auto ElHardNanUclibc = makeMultilib("/mipsel-r2-hard-nan2008-uclibc") 1140 .flag("+EL") 1141 .flag("-msoft-float") 1142 .flag("+mnan=2008") 1143 .flag("+muclibc"); 1144 auto BeHardUclibc = makeMultilib("/mips-r2-hard-uclibc") 1145 .flag("+EB") 1146 .flag("-msoft-float") 1147 .flag("-mnan=2008") 1148 .flag("+muclibc"); 1149 auto ElHardUclibc = makeMultilib("/mipsel-r2-hard-uclibc") 1150 .flag("+EL") 1151 .flag("-msoft-float") 1152 .flag("-mnan=2008") 1153 .flag("+muclibc"); 1154 auto ElMicroHardNan = makeMultilib("/micromipsel-r2-hard-nan2008") 1155 .flag("+EL") 1156 .flag("-msoft-float") 1157 .flag("+mnan=2008") 1158 .flag("+mmicromips"); 1159 auto ElMicroSoft = makeMultilib("/micromipsel-r2-soft") 1160 .flag("+EL") 1161 .flag("+msoft-float") 1162 .flag("-mnan=2008") 1163 .flag("+mmicromips"); 1164 1165 auto O32 = 1166 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64"); 1167 auto N32 = 1168 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64"); 1169 auto N64 = 1170 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64"); 1171 1172 MtiMipsMultilibsV2 = 1173 MultilibSet() 1174 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan, 1175 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc, 1176 ElHardUclibc, ElMicroHardNan, ElMicroSoft}) 1177 .Either(O32, N32, N64) 1178 .FilterOut(NonExistent) 1179 .setIncludeDirsCallback([](const Multilib &M) { 1180 return std::vector<std::string>({"/../../../../sysroot" + 1181 M.includeSuffix() + 1182 "/../usr/include"}); 1183 }) 1184 .setFilePathsCallback([](const Multilib &M) { 1185 return std::vector<std::string>( 1186 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()}); 1187 }); 1188 } 1189 for (auto Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) { 1190 if (Candidate->select(Flags, Result.SelectedMultilib)) { 1191 Result.Multilibs = *Candidate; 1192 return true; 1193 } 1194 } 1195 return false; 1196 } 1197 1198 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags, 1199 FilterNonExistent &NonExistent, 1200 DetectedMultilibs &Result) { 1201 // CodeScape IMG toolchain v1.2 and early. 1202 MultilibSet ImgMultilibsV1; 1203 { 1204 auto Mips64r6 = makeMultilib("/mips64r6").flag("+m64").flag("-m32"); 1205 1206 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 1207 1208 auto MAbi64 = 1209 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32"); 1210 1211 ImgMultilibsV1 = 1212 MultilibSet() 1213 .Maybe(Mips64r6) 1214 .Maybe(MAbi64) 1215 .Maybe(LittleEndian) 1216 .FilterOut(NonExistent) 1217 .setIncludeDirsCallback([](const Multilib &M) { 1218 return std::vector<std::string>( 1219 {"/include", "/../../../../sysroot/usr/include"}); 1220 }); 1221 } 1222 1223 // CodeScape IMG toolchain starting from v1.3. 1224 MultilibSet ImgMultilibsV2; 1225 { 1226 auto BeHard = makeMultilib("/mips-r6-hard") 1227 .flag("+EB") 1228 .flag("-msoft-float") 1229 .flag("-mmicromips"); 1230 auto BeSoft = makeMultilib("/mips-r6-soft") 1231 .flag("+EB") 1232 .flag("+msoft-float") 1233 .flag("-mmicromips"); 1234 auto ElHard = makeMultilib("/mipsel-r6-hard") 1235 .flag("+EL") 1236 .flag("-msoft-float") 1237 .flag("-mmicromips"); 1238 auto ElSoft = makeMultilib("/mipsel-r6-soft") 1239 .flag("+EL") 1240 .flag("+msoft-float") 1241 .flag("-mmicromips"); 1242 auto BeMicroHard = makeMultilib("/micromips-r6-hard") 1243 .flag("+EB") 1244 .flag("-msoft-float") 1245 .flag("+mmicromips"); 1246 auto BeMicroSoft = makeMultilib("/micromips-r6-soft") 1247 .flag("+EB") 1248 .flag("+msoft-float") 1249 .flag("+mmicromips"); 1250 auto ElMicroHard = makeMultilib("/micromipsel-r6-hard") 1251 .flag("+EL") 1252 .flag("-msoft-float") 1253 .flag("+mmicromips"); 1254 auto ElMicroSoft = makeMultilib("/micromipsel-r6-soft") 1255 .flag("+EL") 1256 .flag("+msoft-float") 1257 .flag("+mmicromips"); 1258 1259 auto O32 = 1260 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64"); 1261 auto N32 = 1262 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64"); 1263 auto N64 = 1264 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64"); 1265 1266 ImgMultilibsV2 = 1267 MultilibSet() 1268 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft, 1269 ElMicroHard, ElMicroSoft}) 1270 .Either(O32, N32, N64) 1271 .FilterOut(NonExistent) 1272 .setIncludeDirsCallback([](const Multilib &M) { 1273 return std::vector<std::string>({"/../../../../sysroot" + 1274 M.includeSuffix() + 1275 "/../usr/include"}); 1276 }) 1277 .setFilePathsCallback([](const Multilib &M) { 1278 return std::vector<std::string>( 1279 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()}); 1280 }); 1281 } 1282 for (auto Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) { 1283 if (Candidate->select(Flags, Result.SelectedMultilib)) { 1284 Result.Multilibs = *Candidate; 1285 return true; 1286 } 1287 } 1288 return false; 1289 } 1290 1291 bool clang::driver::findMIPSMultilibs(const Driver &D, 1292 const llvm::Triple &TargetTriple, 1293 StringRef Path, const ArgList &Args, 1294 DetectedMultilibs &Result) { 1295 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1296 1297 StringRef CPUName; 1298 StringRef ABIName; 1299 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName); 1300 1301 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 1302 1303 Multilib::flags_list Flags; 1304 addMultilibFlag(isMips32(TargetArch), "m32", Flags); 1305 addMultilibFlag(isMips64(TargetArch), "m64", Flags); 1306 addMultilibFlag(isMips16(Args), "mips16", Flags); 1307 addMultilibFlag(CPUName == "mips32", "march=mips32", Flags); 1308 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" || 1309 CPUName == "mips32r5" || CPUName == "p5600", 1310 "march=mips32r2", Flags); 1311 addMultilibFlag(CPUName == "mips32r6", "march=mips32r6", Flags); 1312 addMultilibFlag(CPUName == "mips64", "march=mips64", Flags); 1313 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" || 1314 CPUName == "mips64r5" || CPUName == "octeon", 1315 "march=mips64r2", Flags); 1316 addMultilibFlag(CPUName == "mips64r6", "march=mips64r6", Flags); 1317 addMultilibFlag(isMicroMips(Args), "mmicromips", Flags); 1318 addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags); 1319 addMultilibFlag(tools::mips::isNaN2008(Args, TargetTriple), "mnan=2008", 1320 Flags); 1321 addMultilibFlag(ABIName == "n32", "mabi=n32", Flags); 1322 addMultilibFlag(ABIName == "n64", "mabi=n64", Flags); 1323 addMultilibFlag(isSoftFloatABI(Args), "msoft-float", Flags); 1324 addMultilibFlag(!isSoftFloatABI(Args), "mhard-float", Flags); 1325 addMultilibFlag(isMipsEL(TargetArch), "EL", Flags); 1326 addMultilibFlag(!isMipsEL(TargetArch), "EB", Flags); 1327 1328 if (TargetTriple.isAndroid()) 1329 return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent, 1330 Result); 1331 1332 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1333 TargetTriple.getOS() == llvm::Triple::Linux && 1334 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment) 1335 return findMipsMuslMultilibs(Flags, NonExistent, Result); 1336 1337 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1338 TargetTriple.getOS() == llvm::Triple::Linux && 1339 TargetTriple.isGNUEnvironment()) 1340 return findMipsMtiMultilibs(Flags, NonExistent, Result); 1341 1342 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies && 1343 TargetTriple.getOS() == llvm::Triple::Linux && 1344 TargetTriple.isGNUEnvironment()) 1345 return findMipsImgMultilibs(Flags, NonExistent, Result); 1346 1347 if (findMipsCsMultilibs(Flags, NonExistent, Result)) 1348 return true; 1349 1350 // Fallback to the regular toolchain-tree structure. 1351 Multilib Default; 1352 Result.Multilibs.push_back(Default); 1353 Result.Multilibs.FilterOut(NonExistent); 1354 1355 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) { 1356 Result.BiarchSibling = Multilib(); 1357 return true; 1358 } 1359 1360 return false; 1361 } 1362 1363 static void findAndroidArmMultilibs(const Driver &D, 1364 const llvm::Triple &TargetTriple, 1365 StringRef Path, const ArgList &Args, 1366 DetectedMultilibs &Result) { 1367 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb. 1368 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1369 Multilib ArmV7Multilib = makeMultilib("/armv7-a") 1370 .flag("+march=armv7-a") 1371 .flag("-mthumb"); 1372 Multilib ThumbMultilib = makeMultilib("/thumb") 1373 .flag("-march=armv7-a") 1374 .flag("+mthumb"); 1375 Multilib ArmV7ThumbMultilib = makeMultilib("/armv7-a/thumb") 1376 .flag("+march=armv7-a") 1377 .flag("+mthumb"); 1378 Multilib DefaultMultilib = makeMultilib("") 1379 .flag("-march=armv7-a") 1380 .flag("-mthumb"); 1381 MultilibSet AndroidArmMultilibs = 1382 MultilibSet() 1383 .Either(ThumbMultilib, ArmV7Multilib, 1384 ArmV7ThumbMultilib, DefaultMultilib) 1385 .FilterOut(NonExistent); 1386 1387 Multilib::flags_list Flags; 1388 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ); 1389 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm; 1390 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb; 1391 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7; 1392 bool IsThumbMode = IsThumbArch || 1393 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) || 1394 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB); 1395 bool IsArmV7Mode = (IsArmArch || IsThumbArch) && 1396 (llvm::ARM::parseArchVersion(Arch) == 7 || 1397 (IsArmArch && Arch == "" && IsV7SubArch)); 1398 addMultilibFlag(IsArmV7Mode, "march=armv7-a", Flags); 1399 addMultilibFlag(IsThumbMode, "mthumb", Flags); 1400 1401 if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilib)) 1402 Result.Multilibs = AndroidArmMultilibs; 1403 } 1404 1405 static void findRISCVMultilibs(const Driver &D, 1406 const llvm::Triple &TargetTriple, StringRef Path, 1407 const ArgList &Args, DetectedMultilibs &Result) { 1408 1409 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1410 Multilib Ilp32 = makeMultilib("lib32/ilp32").flag("+m32").flag("+mabi=ilp32"); 1411 Multilib Ilp32f = 1412 makeMultilib("lib32/ilp32f").flag("+m32").flag("+mabi=ilp32f"); 1413 Multilib Ilp32d = 1414 makeMultilib("lib32/ilp32d").flag("+m32").flag("+mabi=ilp32d"); 1415 Multilib Lp64 = makeMultilib("lib64/lp64").flag("+m64").flag("+mabi=lp64"); 1416 Multilib Lp64f = makeMultilib("lib64/lp64f").flag("+m64").flag("+mabi=lp64f"); 1417 Multilib Lp64d = makeMultilib("lib64/lp64d").flag("+m64").flag("+mabi=lp64d"); 1418 MultilibSet RISCVMultilibs = 1419 MultilibSet() 1420 .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d}) 1421 .FilterOut(NonExistent); 1422 1423 Multilib::flags_list Flags; 1424 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64; 1425 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple); 1426 1427 addMultilibFlag(!IsRV64, "m32", Flags); 1428 addMultilibFlag(IsRV64, "m64", Flags); 1429 addMultilibFlag(ABIName == "ilp32", "mabi=ilp32", Flags); 1430 addMultilibFlag(ABIName == "ilp32f", "mabi=ilp32f", Flags); 1431 addMultilibFlag(ABIName == "ilp32d", "mabi=ilp32d", Flags); 1432 addMultilibFlag(ABIName == "lp64", "mabi=lp64", Flags); 1433 addMultilibFlag(ABIName == "lp64f", "mabi=lp64f", Flags); 1434 addMultilibFlag(ABIName == "lp64d", "mabi=lp64d", Flags); 1435 1436 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib)) 1437 Result.Multilibs = RISCVMultilibs; 1438 } 1439 1440 static bool findBiarchMultilibs(const Driver &D, 1441 const llvm::Triple &TargetTriple, 1442 StringRef Path, const ArgList &Args, 1443 bool NeedsBiarchSuffix, 1444 DetectedMultilibs &Result) { 1445 Multilib Default; 1446 1447 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs 1448 // in what would normally be GCCInstallPath and put the 64-bit 1449 // libs in a subdirectory named 64. The simple logic we follow is that 1450 // *if* there is a subdirectory of the right name with crtbegin.o in it, 1451 // we use that. If not, and if not a biarch triple alias, we look for 1452 // crtbegin.o without the subdirectory. 1453 1454 StringRef Suff64 = "/64"; 1455 // Solaris uses platform-specific suffixes instead of /64. 1456 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 1457 switch (TargetTriple.getArch()) { 1458 case llvm::Triple::x86: 1459 case llvm::Triple::x86_64: 1460 Suff64 = "/amd64"; 1461 break; 1462 case llvm::Triple::sparc: 1463 case llvm::Triple::sparcv9: 1464 Suff64 = "/sparcv9"; 1465 break; 1466 default: 1467 break; 1468 } 1469 } 1470 1471 Multilib Alt64 = Multilib() 1472 .gccSuffix(Suff64) 1473 .includeSuffix(Suff64) 1474 .flag("-m32") 1475 .flag("+m64") 1476 .flag("-mx32"); 1477 Multilib Alt32 = Multilib() 1478 .gccSuffix("/32") 1479 .includeSuffix("/32") 1480 .flag("+m32") 1481 .flag("-m64") 1482 .flag("-mx32"); 1483 Multilib Altx32 = Multilib() 1484 .gccSuffix("/x32") 1485 .includeSuffix("/x32") 1486 .flag("-m32") 1487 .flag("-m64") 1488 .flag("+mx32"); 1489 1490 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a. 1491 FilterNonExistent NonExistent( 1492 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS()); 1493 1494 // Determine default multilib from: 32, 64, x32 1495 // Also handle cases such as 64 on 32, 32 on 64, etc. 1496 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN; 1497 const bool IsX32 = TargetTriple.getEnvironment() == llvm::Triple::GNUX32; 1498 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32)) 1499 Want = WANT64; 1500 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32)) 1501 Want = WANT64; 1502 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64)) 1503 Want = WANT32; 1504 else { 1505 if (TargetTriple.isArch32Bit()) 1506 Want = NeedsBiarchSuffix ? WANT64 : WANT32; 1507 else if (IsX32) 1508 Want = NeedsBiarchSuffix ? WANT64 : WANTX32; 1509 else 1510 Want = NeedsBiarchSuffix ? WANT32 : WANT64; 1511 } 1512 1513 if (Want == WANT32) 1514 Default.flag("+m32").flag("-m64").flag("-mx32"); 1515 else if (Want == WANT64) 1516 Default.flag("-m32").flag("+m64").flag("-mx32"); 1517 else if (Want == WANTX32) 1518 Default.flag("-m32").flag("-m64").flag("+mx32"); 1519 else 1520 return false; 1521 1522 Result.Multilibs.push_back(Default); 1523 Result.Multilibs.push_back(Alt64); 1524 Result.Multilibs.push_back(Alt32); 1525 Result.Multilibs.push_back(Altx32); 1526 1527 Result.Multilibs.FilterOut(NonExistent); 1528 1529 Multilib::flags_list Flags; 1530 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "m64", Flags); 1531 addMultilibFlag(TargetTriple.isArch32Bit(), "m32", Flags); 1532 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "mx32", Flags); 1533 1534 if (!Result.Multilibs.select(Flags, Result.SelectedMultilib)) 1535 return false; 1536 1537 if (Result.SelectedMultilib == Alt64 || Result.SelectedMultilib == Alt32 || 1538 Result.SelectedMultilib == Altx32) 1539 Result.BiarchSibling = Default; 1540 1541 return true; 1542 } 1543 1544 /// Generic_GCC - A tool chain using the 'gcc' command to perform 1545 /// all subcommands; this relies on gcc translating the majority of 1546 /// command line options. 1547 1548 /// \brief Less-than for GCCVersion, implementing a Strict Weak Ordering. 1549 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor, 1550 int RHSPatch, 1551 StringRef RHSPatchSuffix) const { 1552 if (Major != RHSMajor) 1553 return Major < RHSMajor; 1554 if (Minor != RHSMinor) 1555 return Minor < RHSMinor; 1556 if (Patch != RHSPatch) { 1557 // Note that versions without a specified patch sort higher than those with 1558 // a patch. 1559 if (RHSPatch == -1) 1560 return true; 1561 if (Patch == -1) 1562 return false; 1563 1564 // Otherwise just sort on the patch itself. 1565 return Patch < RHSPatch; 1566 } 1567 if (PatchSuffix != RHSPatchSuffix) { 1568 // Sort empty suffixes higher. 1569 if (RHSPatchSuffix.empty()) 1570 return true; 1571 if (PatchSuffix.empty()) 1572 return false; 1573 1574 // Provide a lexicographic sort to make this a total ordering. 1575 return PatchSuffix < RHSPatchSuffix; 1576 } 1577 1578 // The versions are equal. 1579 return false; 1580 } 1581 1582 /// \brief Parse a GCCVersion object out of a string of text. 1583 /// 1584 /// This is the primary means of forming GCCVersion objects. 1585 /*static*/ 1586 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) { 1587 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 1588 std::pair<StringRef, StringRef> First = VersionText.split('.'); 1589 std::pair<StringRef, StringRef> Second = First.second.split('.'); 1590 1591 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 1592 if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0) 1593 return BadVersion; 1594 GoodVersion.MajorStr = First.first.str(); 1595 if (First.second.empty()) 1596 return GoodVersion; 1597 StringRef MinorStr = Second.first; 1598 if (Second.second.empty()) { 1599 if (size_t EndNumber = MinorStr.find_first_not_of("0123456789")) { 1600 GoodVersion.PatchSuffix = MinorStr.substr(EndNumber); 1601 MinorStr = MinorStr.slice(0, EndNumber); 1602 } 1603 } 1604 if (MinorStr.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0) 1605 return BadVersion; 1606 GoodVersion.MinorStr = MinorStr.str(); 1607 1608 // First look for a number prefix and parse that if present. Otherwise just 1609 // stash the entire patch string in the suffix, and leave the number 1610 // unspecified. This covers versions strings such as: 1611 // 5 (handled above) 1612 // 4.4 1613 // 4.4-patched 1614 // 4.4.0 1615 // 4.4.x 1616 // 4.4.2-rc4 1617 // 4.4.x-patched 1618 // And retains any patch number it finds. 1619 StringRef PatchText = Second.second; 1620 if (!PatchText.empty()) { 1621 if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) { 1622 // Try to parse the number and any suffix. 1623 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) || 1624 GoodVersion.Patch < 0) 1625 return BadVersion; 1626 GoodVersion.PatchSuffix = PatchText.substr(EndNumber); 1627 } 1628 } 1629 1630 return GoodVersion; 1631 } 1632 1633 static llvm::StringRef getGCCToolchainDir(const ArgList &Args) { 1634 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain); 1635 if (A) 1636 return A->getValue(); 1637 return GCC_INSTALL_PREFIX; 1638 } 1639 1640 /// \brief Initialize a GCCInstallationDetector from the driver. 1641 /// 1642 /// This performs all of the autodetection and sets up the various paths. 1643 /// Once constructed, a GCCInstallationDetector is essentially immutable. 1644 /// 1645 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and 1646 /// should instead pull the target out of the driver. This is currently 1647 /// necessary because the driver doesn't store the final version of the target 1648 /// triple. 1649 void Generic_GCC::GCCInstallationDetector::init( 1650 const llvm::Triple &TargetTriple, const ArgList &Args, 1651 ArrayRef<std::string> ExtraTripleAliases) { 1652 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit() 1653 ? TargetTriple.get64BitArchVariant() 1654 : TargetTriple.get32BitArchVariant(); 1655 // The library directories which may contain GCC installations. 1656 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs; 1657 // The compatible GCC triples for this particular architecture. 1658 SmallVector<StringRef, 16> CandidateTripleAliases; 1659 SmallVector<StringRef, 16> CandidateBiarchTripleAliases; 1660 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs, 1661 CandidateTripleAliases, CandidateBiarchLibDirs, 1662 CandidateBiarchTripleAliases); 1663 1664 // Compute the set of prefixes for our search. 1665 SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(), 1666 D.PrefixDirs.end()); 1667 1668 StringRef GCCToolchainDir = getGCCToolchainDir(Args); 1669 if (GCCToolchainDir != "") { 1670 if (GCCToolchainDir.back() == '/') 1671 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the / 1672 1673 Prefixes.push_back(GCCToolchainDir); 1674 } else { 1675 // If we have a SysRoot, try that first. 1676 if (!D.SysRoot.empty()) { 1677 Prefixes.push_back(D.SysRoot); 1678 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 1679 } 1680 1681 // Then look for gcc installed alongside clang. 1682 Prefixes.push_back(D.InstalledDir + "/.."); 1683 1684 // Next, look for prefix(es) that correspond to distribution-supplied gcc 1685 // installations. 1686 if (D.SysRoot.empty()) { 1687 // Typically /usr. 1688 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 1689 } 1690 } 1691 1692 // Try to respect gcc-config on Gentoo. However, do that only 1693 // if --gcc-toolchain is not provided or equal to the Gentoo install 1694 // in /usr. This avoids accidentally enforcing the system GCC version 1695 // when using a custom toolchain. 1696 if (GCCToolchainDir == "" || GCCToolchainDir == D.SysRoot + "/usr") { 1697 SmallVector<StringRef, 16> GentooTestTriples; 1698 // Try to match an exact triple as target triple first. 1699 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for 1700 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu" 1701 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching 1702 // triple x86_64-gentoo-linux-gnu is present. 1703 GentooTestTriples.push_back(TargetTriple.str()); 1704 // Check rest of triples. 1705 GentooTestTriples.append(ExtraTripleAliases.begin(), 1706 ExtraTripleAliases.end()); 1707 GentooTestTriples.append(CandidateTripleAliases.begin(), 1708 CandidateTripleAliases.end()); 1709 if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples, 1710 CandidateBiarchTripleAliases)) 1711 return; 1712 } 1713 1714 // Loop over the various components which exist and select the best GCC 1715 // installation available. GCC installs are ranked by version number. 1716 Version = GCCVersion::Parse("0.0.0"); 1717 for (const std::string &Prefix : Prefixes) { 1718 if (!D.getVFS().exists(Prefix)) 1719 continue; 1720 for (StringRef Suffix : CandidateLibDirs) { 1721 const std::string LibDir = Prefix + Suffix.str(); 1722 if (!D.getVFS().exists(LibDir)) 1723 continue; 1724 // Try to match the exact target triple first. 1725 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, TargetTriple.str()); 1726 // Try rest of possible triples. 1727 for (StringRef Candidate : ExtraTripleAliases) // Try these first. 1728 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate); 1729 for (StringRef Candidate : CandidateTripleAliases) 1730 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate); 1731 } 1732 for (StringRef Suffix : CandidateBiarchLibDirs) { 1733 const std::string LibDir = Prefix + Suffix.str(); 1734 if (!D.getVFS().exists(LibDir)) 1735 continue; 1736 for (StringRef Candidate : CandidateBiarchTripleAliases) 1737 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, 1738 /*NeedsBiarchSuffix=*/ true); 1739 } 1740 } 1741 } 1742 1743 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const { 1744 for (const auto &InstallPath : CandidateGCCInstallPaths) 1745 OS << "Found candidate GCC installation: " << InstallPath << "\n"; 1746 1747 if (!GCCInstallPath.empty()) 1748 OS << "Selected GCC installation: " << GCCInstallPath << "\n"; 1749 1750 for (const auto &Multilib : Multilibs) 1751 OS << "Candidate multilib: " << Multilib << "\n"; 1752 1753 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault()) 1754 OS << "Selected multilib: " << SelectedMultilib << "\n"; 1755 } 1756 1757 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const { 1758 if (BiarchSibling.hasValue()) { 1759 M = BiarchSibling.getValue(); 1760 return true; 1761 } 1762 return false; 1763 } 1764 1765 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes( 1766 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes, 1767 StringRef SysRoot) { 1768 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 1769 // Solaris is a special case. 1770 // The GCC installation is under 1771 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/ 1772 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with 1773 // /usr/gcc/<version> as a prefix. 1774 1775 std::string PrefixDir = SysRoot.str() + "/usr/gcc"; 1776 std::error_code EC; 1777 for (vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC), LE; 1778 !EC && LI != LE; LI = LI.increment(EC)) { 1779 StringRef VersionText = llvm::sys::path::filename(LI->getName()); 1780 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 1781 1782 // Filter out obviously bad entries. 1783 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1)) 1784 continue; 1785 1786 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str(); 1787 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc"; 1788 if (!D.getVFS().exists(CandidateLibPath)) 1789 continue; 1790 1791 Prefixes.push_back(CandidatePrefix); 1792 } 1793 return; 1794 } 1795 1796 // Non-Solaris is much simpler - most systems just go with "/usr". 1797 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux) { 1798 // Yet, still look for RHEL devtoolsets. 1799 Prefixes.push_back("/opt/rh/devtoolset-7/root/usr"); 1800 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr"); 1801 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr"); 1802 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr"); 1803 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr"); 1804 } 1805 Prefixes.push_back(SysRoot.str() + "/usr"); 1806 } 1807 1808 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples( 1809 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple, 1810 SmallVectorImpl<StringRef> &LibDirs, 1811 SmallVectorImpl<StringRef> &TripleAliases, 1812 SmallVectorImpl<StringRef> &BiarchLibDirs, 1813 SmallVectorImpl<StringRef> &BiarchTripleAliases) { 1814 // Declare a bunch of static data sets that we'll select between below. These 1815 // are specifically designed to always refer to string literals to avoid any 1816 // lifetime or initialization issues. 1817 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"}; 1818 static const char *const AArch64Triples[] = { 1819 "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-redhat-linux", 1820 "aarch64-suse-linux"}; 1821 static const char *const AArch64beLibDirs[] = {"/lib"}; 1822 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu", 1823 "aarch64_be-linux-gnu"}; 1824 1825 static const char *const ARMLibDirs[] = {"/lib"}; 1826 static const char *const ARMTriples[] = {"arm-linux-gnueabi"}; 1827 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf", 1828 "armv7hl-redhat-linux-gnueabi", 1829 "armv6hl-suse-linux-gnueabi", 1830 "armv7hl-suse-linux-gnueabi"}; 1831 static const char *const ARMebLibDirs[] = {"/lib"}; 1832 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi"}; 1833 static const char *const ARMebHFTriples[] = { 1834 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"}; 1835 1836 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"}; 1837 static const char *const X86_64Triples[] = { 1838 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu", 1839 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E", 1840 "x86_64-redhat-linux", "x86_64-suse-linux", 1841 "x86_64-manbo-linux-gnu", "x86_64-linux-gnu", 1842 "x86_64-slackware-linux", "x86_64-unknown-linux"}; 1843 static const char *const X32LibDirs[] = {"/libx32"}; 1844 static const char *const X86LibDirs[] = {"/lib32", "/lib"}; 1845 static const char *const X86Triples[] = { 1846 "i686-linux-gnu", "i686-pc-linux-gnu", "i486-linux-gnu", 1847 "i386-linux-gnu", "i386-redhat-linux6E", "i686-redhat-linux", 1848 "i586-redhat-linux", "i386-redhat-linux", "i586-suse-linux", 1849 "i486-slackware-linux", "i686-montavista-linux", "i586-linux-gnu"}; 1850 1851 static const char *const MIPSLibDirs[] = {"/lib"}; 1852 static const char *const MIPSTriples[] = {"mips-linux-gnu", "mips-mti-linux", 1853 "mips-mti-linux-gnu", 1854 "mips-img-linux-gnu"}; 1855 static const char *const MIPSELLibDirs[] = {"/lib"}; 1856 static const char *const MIPSELTriples[] = {"mipsel-linux-gnu", 1857 "mips-img-linux-gnu"}; 1858 1859 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"}; 1860 static const char *const MIPS64Triples[] = { 1861 "mips64-linux-gnu", "mips-mti-linux-gnu", "mips-img-linux-gnu", 1862 "mips64-linux-gnuabi64"}; 1863 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"}; 1864 static const char *const MIPS64ELTriples[] = { 1865 "mips64el-linux-gnu", "mips-mti-linux-gnu", "mips-img-linux-gnu", 1866 "mips64el-linux-gnuabi64"}; 1867 1868 1869 static const char *const PPCLibDirs[] = {"/lib32", "/lib"}; 1870 static const char *const PPCTriples[] = { 1871 "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe", 1872 "powerpc-suse-linux", "powerpc-montavista-linuxspe"}; 1873 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"}; 1874 static const char *const PPC64Triples[] = { 1875 "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu", 1876 "powerpc64-suse-linux", "ppc64-redhat-linux"}; 1877 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"}; 1878 static const char *const PPC64LETriples[] = { 1879 "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu", 1880 "powerpc64le-suse-linux", "ppc64le-redhat-linux"}; 1881 1882 static const char *const RISCV32LibDirs[] = {"/lib", "/lib32"}; 1883 static const char *const RISCVTriples[] = {"riscv32-unknown-linux-gnu", 1884 "riscv64-unknown-linux-gnu"}; 1885 1886 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"}; 1887 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu", 1888 "sparcv8-linux-gnu"}; 1889 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"}; 1890 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu", 1891 "sparcv9-linux-gnu"}; 1892 1893 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"}; 1894 static const char *const SystemZTriples[] = { 1895 "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu", 1896 "s390x-suse-linux", "s390x-redhat-linux"}; 1897 1898 1899 using std::begin; 1900 using std::end; 1901 1902 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 1903 static const char *const SolarisLibDirs[] = {"/lib"}; 1904 static const char *const SolarisSparcV8Triples[] = { 1905 "sparc-sun-solaris2.11", "sparc-sun-solaris2.12"}; 1906 static const char *const SolarisSparcV9Triples[] = { 1907 "sparcv9-sun-solaris2.11", "sparcv9-sun-solaris2.12"}; 1908 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11", 1909 "i386-pc-solaris2.12"}; 1910 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11", 1911 "x86_64-pc-solaris2.12"}; 1912 LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 1913 BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 1914 switch (TargetTriple.getArch()) { 1915 case llvm::Triple::x86: 1916 TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples)); 1917 BiarchTripleAliases.append(begin(SolarisX86_64Triples), 1918 end(SolarisX86_64Triples)); 1919 break; 1920 case llvm::Triple::x86_64: 1921 TripleAliases.append(begin(SolarisX86_64Triples), 1922 end(SolarisX86_64Triples)); 1923 BiarchTripleAliases.append(begin(SolarisX86Triples), 1924 end(SolarisX86Triples)); 1925 break; 1926 case llvm::Triple::sparc: 1927 TripleAliases.append(begin(SolarisSparcV8Triples), 1928 end(SolarisSparcV8Triples)); 1929 BiarchTripleAliases.append(begin(SolarisSparcV9Triples), 1930 end(SolarisSparcV9Triples)); 1931 break; 1932 case llvm::Triple::sparcv9: 1933 TripleAliases.append(begin(SolarisSparcV9Triples), 1934 end(SolarisSparcV9Triples)); 1935 BiarchTripleAliases.append(begin(SolarisSparcV8Triples), 1936 end(SolarisSparcV8Triples)); 1937 break; 1938 default: 1939 break; 1940 } 1941 return; 1942 } 1943 1944 // Android targets should not use GNU/Linux tools or libraries. 1945 if (TargetTriple.isAndroid()) { 1946 static const char *const AArch64AndroidTriples[] = { 1947 "aarch64-linux-android"}; 1948 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"}; 1949 static const char *const MIPSELAndroidTriples[] = {"mipsel-linux-android"}; 1950 static const char *const MIPS64ELAndroidTriples[] = { 1951 "mips64el-linux-android"}; 1952 static const char *const X86AndroidTriples[] = {"i686-linux-android"}; 1953 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"}; 1954 1955 switch (TargetTriple.getArch()) { 1956 case llvm::Triple::aarch64: 1957 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 1958 TripleAliases.append(begin(AArch64AndroidTriples), 1959 end(AArch64AndroidTriples)); 1960 break; 1961 case llvm::Triple::arm: 1962 case llvm::Triple::thumb: 1963 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 1964 TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples)); 1965 break; 1966 case llvm::Triple::mipsel: 1967 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 1968 TripleAliases.append(begin(MIPSELAndroidTriples), 1969 end(MIPSELAndroidTriples)); 1970 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 1971 BiarchTripleAliases.append(begin(MIPS64ELAndroidTriples), 1972 end(MIPS64ELAndroidTriples)); 1973 break; 1974 case llvm::Triple::mips64el: 1975 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 1976 TripleAliases.append(begin(MIPS64ELAndroidTriples), 1977 end(MIPS64ELAndroidTriples)); 1978 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 1979 BiarchTripleAliases.append(begin(MIPSELAndroidTriples), 1980 end(MIPSELAndroidTriples)); 1981 break; 1982 case llvm::Triple::x86_64: 1983 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 1984 TripleAliases.append(begin(X86_64AndroidTriples), 1985 end(X86_64AndroidTriples)); 1986 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 1987 BiarchTripleAliases.append(begin(X86AndroidTriples), 1988 end(X86AndroidTriples)); 1989 break; 1990 case llvm::Triple::x86: 1991 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 1992 TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples)); 1993 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 1994 BiarchTripleAliases.append(begin(X86_64AndroidTriples), 1995 end(X86_64AndroidTriples)); 1996 break; 1997 default: 1998 break; 1999 } 2000 2001 return; 2002 } 2003 2004 switch (TargetTriple.getArch()) { 2005 case llvm::Triple::aarch64: 2006 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2007 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2008 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2009 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2010 break; 2011 case llvm::Triple::aarch64_be: 2012 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2013 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2014 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2015 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2016 break; 2017 case llvm::Triple::arm: 2018 case llvm::Triple::thumb: 2019 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2020 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2021 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples)); 2022 } else { 2023 TripleAliases.append(begin(ARMTriples), end(ARMTriples)); 2024 } 2025 break; 2026 case llvm::Triple::armeb: 2027 case llvm::Triple::thumbeb: 2028 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs)); 2029 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2030 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples)); 2031 } else { 2032 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples)); 2033 } 2034 break; 2035 case llvm::Triple::x86_64: 2036 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2037 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2038 // x32 is always available when x86_64 is available, so adding it as 2039 // secondary arch with x86_64 triples 2040 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32) { 2041 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2042 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2043 } else { 2044 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2045 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples)); 2046 } 2047 break; 2048 case llvm::Triple::x86: 2049 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2050 // MCU toolchain is 32 bit only and its triple alias is TargetTriple 2051 // itself, which will be appended below. 2052 if (!TargetTriple.isOSIAMCU()) { 2053 TripleAliases.append(begin(X86Triples), end(X86Triples)); 2054 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2055 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2056 } 2057 break; 2058 case llvm::Triple::mips: 2059 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2060 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2061 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2062 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2063 break; 2064 case llvm::Triple::mipsel: 2065 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2066 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2067 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2068 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2069 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2070 break; 2071 case llvm::Triple::mips64: 2072 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2073 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2074 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2075 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2076 break; 2077 case llvm::Triple::mips64el: 2078 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2079 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2080 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2081 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2082 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2083 break; 2084 case llvm::Triple::ppc: 2085 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2086 TripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2087 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2088 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2089 break; 2090 case llvm::Triple::ppc64: 2091 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2092 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2093 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2094 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2095 break; 2096 case llvm::Triple::ppc64le: 2097 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs)); 2098 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples)); 2099 break; 2100 case llvm::Triple::riscv32: 2101 LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2102 BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2103 TripleAliases.append(begin(RISCVTriples), end(RISCVTriples)); 2104 BiarchTripleAliases.append(begin(RISCVTriples), end(RISCVTriples)); 2105 break; 2106 case llvm::Triple::sparc: 2107 case llvm::Triple::sparcel: 2108 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2109 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2110 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2111 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2112 break; 2113 case llvm::Triple::sparcv9: 2114 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2115 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2116 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2117 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2118 break; 2119 case llvm::Triple::systemz: 2120 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs)); 2121 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples)); 2122 break; 2123 default: 2124 // By default, just rely on the standard lib directories and the original 2125 // triple. 2126 break; 2127 } 2128 2129 // Always append the drivers target triple to the end, in case it doesn't 2130 // match any of our aliases. 2131 TripleAliases.push_back(TargetTriple.str()); 2132 2133 // Also include the multiarch variant if it's different. 2134 if (TargetTriple.str() != BiarchTriple.str()) 2135 BiarchTripleAliases.push_back(BiarchTriple.str()); 2136 } 2137 2138 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs( 2139 const llvm::Triple &TargetTriple, const ArgList &Args, 2140 StringRef Path, bool NeedsBiarchSuffix) { 2141 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 2142 DetectedMultilibs Detected; 2143 2144 // Android standalone toolchain could have multilibs for ARM and Thumb. 2145 // Debian mips multilibs behave more like the rest of the biarch ones, 2146 // so handle them there 2147 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) { 2148 // It should also work without multilibs in a simplified toolchain. 2149 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected); 2150 } else if (tools::isMipsArch(TargetArch)) { 2151 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected)) 2152 return false; 2153 } else if (isRISCV(TargetArch)) { 2154 findRISCVMultilibs(D, TargetTriple, Path, Args, Detected); 2155 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args, 2156 NeedsBiarchSuffix, Detected)) { 2157 return false; 2158 } 2159 2160 Multilibs = Detected.Multilibs; 2161 SelectedMultilib = Detected.SelectedMultilib; 2162 BiarchSibling = Detected.BiarchSibling; 2163 2164 return true; 2165 } 2166 2167 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple( 2168 const llvm::Triple &TargetTriple, const ArgList &Args, 2169 const std::string &LibDir, StringRef CandidateTriple, 2170 bool NeedsBiarchSuffix) { 2171 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 2172 // Locations relative to the system lib directory where GCC's triple-specific 2173 // directories might reside. 2174 struct GCCLibSuffix { 2175 // Path from system lib directory to GCC triple-specific directory. 2176 std::string LibSuffix; 2177 // Path from GCC triple-specific directory back to system lib directory. 2178 // This is one '..' component per component in LibSuffix. 2179 StringRef ReversePath; 2180 // Whether this library suffix is relevant for the triple. 2181 bool Active; 2182 } Suffixes[] = { 2183 // This is the normal place. 2184 {"gcc/" + CandidateTriple.str(), "../..", true}, 2185 2186 // Debian puts cross-compilers in gcc-cross. 2187 {"gcc-cross/" + CandidateTriple.str(), "../..", 2188 TargetTriple.getOS() != llvm::Triple::Solaris}, 2189 2190 // The Freescale PPC SDK has the gcc libraries in 2191 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do 2192 // this on Freescale triples, though, since some systems put a *lot* of 2193 // files in that location, not just GCC installation data. 2194 {CandidateTriple.str(), "..", 2195 TargetTriple.getVendor() == llvm::Triple::Freescale}, 2196 2197 // Natively multiarch systems sometimes put the GCC triple-specific 2198 // directory within their multiarch lib directory, resulting in the 2199 // triple appearing twice. 2200 {CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), "../../..", 2201 TargetTriple.getOS() != llvm::Triple::Solaris}, 2202 2203 // Deal with cases (on Ubuntu) where the system architecture could be i386 2204 // but the GCC target architecture could be (say) i686. 2205 // FIXME: It may be worthwhile to generalize this and look for a second 2206 // triple. 2207 {"i386-linux-gnu/gcc/" + CandidateTriple.str(), "../../..", 2208 (TargetArch == llvm::Triple::x86 && 2209 TargetTriple.getOS() != llvm::Triple::Solaris)}}; 2210 2211 for (auto &Suffix : Suffixes) { 2212 if (!Suffix.Active) 2213 continue; 2214 2215 StringRef LibSuffix = Suffix.LibSuffix; 2216 std::error_code EC; 2217 for (vfs::directory_iterator 2218 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC), 2219 LE; 2220 !EC && LI != LE; LI = LI.increment(EC)) { 2221 StringRef VersionText = llvm::sys::path::filename(LI->getName()); 2222 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 2223 if (CandidateVersion.Major != -1) // Filter obviously bad entries. 2224 if (!CandidateGCCInstallPaths.insert(LI->getName()).second) 2225 continue; // Saw this path before; no need to look at it again. 2226 if (CandidateVersion.isOlderThan(4, 1, 1)) 2227 continue; 2228 if (CandidateVersion <= Version) 2229 continue; 2230 2231 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->getName(), 2232 NeedsBiarchSuffix)) 2233 continue; 2234 2235 Version = CandidateVersion; 2236 GCCTriple.setTriple(CandidateTriple); 2237 // FIXME: We hack together the directory name here instead of 2238 // using LI to ensure stable path separators across Windows and 2239 // Linux. 2240 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str(); 2241 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str(); 2242 IsValid = true; 2243 } 2244 } 2245 } 2246 2247 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs( 2248 const llvm::Triple &TargetTriple, const ArgList &Args, 2249 const SmallVectorImpl<StringRef> &CandidateTriples, 2250 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) { 2251 for (StringRef CandidateTriple : CandidateTriples) { 2252 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple)) 2253 return true; 2254 } 2255 2256 for (StringRef CandidateTriple : CandidateBiarchTriples) { 2257 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true)) 2258 return true; 2259 } 2260 return false; 2261 } 2262 2263 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig( 2264 const llvm::Triple &TargetTriple, const ArgList &Args, 2265 StringRef CandidateTriple, bool NeedsBiarchSuffix) { 2266 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File = 2267 D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/config-" + 2268 CandidateTriple.str()); 2269 if (File) { 2270 SmallVector<StringRef, 2> Lines; 2271 File.get()->getBuffer().split(Lines, "\n"); 2272 for (StringRef Line : Lines) { 2273 Line = Line.trim(); 2274 // CURRENT=triple-version 2275 if (!Line.consume_front("CURRENT=")) 2276 continue; 2277 // Process the config file pointed to by CURRENT. 2278 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile = 2279 D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/" + 2280 Line.str()); 2281 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-'); 2282 // List of paths to scan for libraries. 2283 SmallVector<StringRef, 4> GentooScanPaths; 2284 // Scan the Config file to find installed GCC libraries path. 2285 // Typical content of the GCC config file: 2286 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/ 2287 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32" 2288 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man" 2289 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info" 2290 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4" 2291 // We are looking for the paths listed in LDPATH=... . 2292 if (ConfigFile) { 2293 SmallVector<StringRef, 2> ConfigLines; 2294 ConfigFile.get()->getBuffer().split(ConfigLines, "\n"); 2295 for (StringRef ConfLine : ConfigLines) { 2296 ConfLine = ConfLine.trim(); 2297 if (ConfLine.consume_front("LDPATH=")) { 2298 // Drop '"' from front and back if present. 2299 ConfLine.consume_back("\""); 2300 ConfLine.consume_front("\""); 2301 // Get all paths sperated by ':' 2302 ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false); 2303 } 2304 } 2305 } 2306 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}. 2307 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/" 2308 + ActiveVersion.second.str(); 2309 GentooScanPaths.push_back(StringRef(basePath)); 2310 2311 // Scan all paths for GCC libraries. 2312 for (const auto &GentooScanPath : GentooScanPaths) { 2313 std::string GentooPath = D.SysRoot + std::string(GentooScanPath); 2314 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) { 2315 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath, 2316 NeedsBiarchSuffix)) 2317 continue; 2318 2319 Version = GCCVersion::Parse(ActiveVersion.second); 2320 GCCInstallPath = GentooPath; 2321 GCCParentLibPath = GentooPath + std::string("/../../.."); 2322 GCCTriple.setTriple(ActiveVersion.first); 2323 IsValid = true; 2324 return true; 2325 } 2326 } 2327 } 2328 } 2329 2330 return false; 2331 } 2332 2333 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple, 2334 const ArgList &Args) 2335 : ToolChain(D, Triple, Args), GCCInstallation(D), 2336 CudaInstallation(D, Triple, Args) { 2337 getProgramPaths().push_back(getDriver().getInstalledDir()); 2338 if (getDriver().getInstalledDir() != getDriver().Dir) 2339 getProgramPaths().push_back(getDriver().Dir); 2340 } 2341 2342 Generic_GCC::~Generic_GCC() {} 2343 2344 Tool *Generic_GCC::getTool(Action::ActionClass AC) const { 2345 switch (AC) { 2346 case Action::PreprocessJobClass: 2347 if (!Preprocess) 2348 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this)); 2349 return Preprocess.get(); 2350 case Action::CompileJobClass: 2351 if (!Compile) 2352 Compile.reset(new tools::gcc::Compiler(*this)); 2353 return Compile.get(); 2354 default: 2355 return ToolChain::getTool(AC); 2356 } 2357 } 2358 2359 Tool *Generic_GCC::buildAssembler() const { 2360 return new tools::gnutools::Assembler(*this); 2361 } 2362 2363 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); } 2364 2365 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const { 2366 // Print the information about how we detected the GCC installation. 2367 GCCInstallation.print(OS); 2368 CudaInstallation.print(OS); 2369 } 2370 2371 bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const { 2372 return getArch() == llvm::Triple::x86_64; 2373 } 2374 2375 bool Generic_GCC::isPICDefault() const { 2376 switch (getArch()) { 2377 case llvm::Triple::x86_64: 2378 return getTriple().isOSWindows(); 2379 case llvm::Triple::ppc64: 2380 case llvm::Triple::ppc64le: 2381 return !getTriple().isOSBinFormatMachO() && !getTriple().isMacOSX(); 2382 case llvm::Triple::mips64: 2383 case llvm::Triple::mips64el: 2384 return true; 2385 default: 2386 return false; 2387 } 2388 } 2389 2390 bool Generic_GCC::isPIEDefault() const { return false; } 2391 2392 bool Generic_GCC::isPICDefaultForced() const { 2393 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows(); 2394 } 2395 2396 bool Generic_GCC::IsIntegratedAssemblerDefault() const { 2397 switch (getTriple().getArch()) { 2398 case llvm::Triple::x86: 2399 case llvm::Triple::x86_64: 2400 case llvm::Triple::aarch64: 2401 case llvm::Triple::aarch64_be: 2402 case llvm::Triple::arm: 2403 case llvm::Triple::armeb: 2404 case llvm::Triple::avr: 2405 case llvm::Triple::bpfel: 2406 case llvm::Triple::bpfeb: 2407 case llvm::Triple::thumb: 2408 case llvm::Triple::thumbeb: 2409 case llvm::Triple::ppc: 2410 case llvm::Triple::ppc64: 2411 case llvm::Triple::ppc64le: 2412 case llvm::Triple::riscv32: 2413 case llvm::Triple::riscv64: 2414 case llvm::Triple::systemz: 2415 case llvm::Triple::mips: 2416 case llvm::Triple::mipsel: 2417 return true; 2418 case llvm::Triple::mips64: 2419 case llvm::Triple::mips64el: 2420 // Enabled for Debian and Android mips64/mipsel, as they can precisely 2421 // identify the ABI in use (Debian) or only use N64 for MIPS64 (Android). 2422 // Other targets are unable to distinguish N32 from N64. 2423 if (getTriple().getEnvironment() == llvm::Triple::GNUABI64 || 2424 getTriple().isAndroid()) 2425 return true; 2426 return false; 2427 default: 2428 return false; 2429 } 2430 } 2431 2432 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 2433 ArgStringList &CC1Args) const { 2434 if (DriverArgs.hasArg(options::OPT_nostdlibinc) || 2435 DriverArgs.hasArg(options::OPT_nostdincxx)) 2436 return; 2437 2438 switch (GetCXXStdlibType(DriverArgs)) { 2439 case ToolChain::CST_Libcxx: 2440 addLibCxxIncludePaths(DriverArgs, CC1Args); 2441 break; 2442 2443 case ToolChain::CST_Libstdcxx: 2444 addLibStdCxxIncludePaths(DriverArgs, CC1Args); 2445 break; 2446 } 2447 } 2448 2449 void 2450 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 2451 llvm::opt::ArgStringList &CC1Args) const { 2452 // FIXME: The Linux behavior would probaby be a better approach here. 2453 addSystemInclude(DriverArgs, CC1Args, 2454 getDriver().SysRoot + "/usr/include/c++/v1"); 2455 } 2456 2457 void 2458 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 2459 llvm::opt::ArgStringList &CC1Args) const { 2460 // By default, we don't assume we know where libstdc++ might be installed. 2461 // FIXME: If we have a valid GCCInstallation, use it. 2462 } 2463 2464 /// \brief Helper to add the variant paths of a libstdc++ installation. 2465 bool Generic_GCC::addLibStdCXXIncludePaths( 2466 Twine Base, Twine Suffix, StringRef GCCTriple, StringRef GCCMultiarchTriple, 2467 StringRef TargetMultiarchTriple, Twine IncludeSuffix, 2468 const ArgList &DriverArgs, ArgStringList &CC1Args) const { 2469 if (!getVFS().exists(Base + Suffix)) 2470 return false; 2471 2472 addSystemInclude(DriverArgs, CC1Args, Base + Suffix); 2473 2474 // The vanilla GCC layout of libstdc++ headers uses a triple subdirectory. If 2475 // that path exists or we have neither a GCC nor target multiarch triple, use 2476 // this vanilla search path. 2477 if ((GCCMultiarchTriple.empty() && TargetMultiarchTriple.empty()) || 2478 getVFS().exists(Base + Suffix + "/" + GCCTriple + IncludeSuffix)) { 2479 addSystemInclude(DriverArgs, CC1Args, 2480 Base + Suffix + "/" + GCCTriple + IncludeSuffix); 2481 } else { 2482 // Otherwise try to use multiarch naming schemes which have normalized the 2483 // triples and put the triple before the suffix. 2484 // 2485 // GCC surprisingly uses *both* the GCC triple with a multilib suffix and 2486 // the target triple, so we support that here. 2487 addSystemInclude(DriverArgs, CC1Args, 2488 Base + "/" + GCCMultiarchTriple + Suffix + IncludeSuffix); 2489 addSystemInclude(DriverArgs, CC1Args, 2490 Base + "/" + TargetMultiarchTriple + Suffix); 2491 } 2492 2493 addSystemInclude(DriverArgs, CC1Args, Base + Suffix + "/backward"); 2494 return true; 2495 } 2496 2497 llvm::opt::DerivedArgList * 2498 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef, 2499 Action::OffloadKind DeviceOffloadKind) const { 2500 2501 // If this tool chain is used for an OpenMP offloading device we have to make 2502 // sure we always generate a shared library regardless of the commands the 2503 // user passed to the host. This is required because the runtime library 2504 // is required to load the device image dynamically at run time. 2505 if (DeviceOffloadKind == Action::OFK_OpenMP) { 2506 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs()); 2507 const OptTable &Opts = getDriver().getOpts(); 2508 2509 // Request the shared library. Given that these options are decided 2510 // implicitly, they do not refer to any base argument. 2511 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared)); 2512 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC)); 2513 2514 // Filter all the arguments we don't care passing to the offloading 2515 // toolchain as they can mess up with the creation of a shared library. 2516 for (auto *A : Args) { 2517 switch ((options::ID)A->getOption().getID()) { 2518 default: 2519 DAL->append(A); 2520 break; 2521 case options::OPT_shared: 2522 case options::OPT_dynamic: 2523 case options::OPT_static: 2524 case options::OPT_fPIC: 2525 case options::OPT_fno_PIC: 2526 case options::OPT_fpic: 2527 case options::OPT_fno_pic: 2528 case options::OPT_fPIE: 2529 case options::OPT_fno_PIE: 2530 case options::OPT_fpie: 2531 case options::OPT_fno_pie: 2532 break; 2533 } 2534 } 2535 return DAL; 2536 } 2537 return nullptr; 2538 } 2539 2540 void Generic_ELF::anchor() {} 2541 2542 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs, 2543 ArgStringList &CC1Args, 2544 Action::OffloadKind) const { 2545 const Generic_GCC::GCCVersion &V = GCCInstallation.getVersion(); 2546 bool UseInitArrayDefault = 2547 getTriple().getArch() == llvm::Triple::aarch64 || 2548 getTriple().getArch() == llvm::Triple::aarch64_be || 2549 (getTriple().getOS() == llvm::Triple::Linux && 2550 ((!GCCInstallation.isValid() || !V.isOlderThan(4, 7, 0)) || 2551 getTriple().isAndroid())) || 2552 getTriple().getOS() == llvm::Triple::NaCl || 2553 (getTriple().getVendor() == llvm::Triple::MipsTechnologies && 2554 !getTriple().hasEnvironment()) || 2555 getTriple().getOS() == llvm::Triple::Solaris; 2556 2557 if (DriverArgs.hasFlag(options::OPT_fuse_init_array, 2558 options::OPT_fno_use_init_array, UseInitArrayDefault)) 2559 CC1Args.push_back("-fuse-init-array"); 2560 } 2561