1 //===--- Gnu.cpp - Gnu Tool and ToolChain Implementations -------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "Gnu.h" 10 #include "Arch/ARM.h" 11 #include "Arch/Mips.h" 12 #include "Arch/PPC.h" 13 #include "Arch/RISCV.h" 14 #include "Arch/Sparc.h" 15 #include "Arch/SystemZ.h" 16 #include "CommonArgs.h" 17 #include "Linux.h" 18 #include "clang/Config/config.h" // for GCC_INSTALL_PREFIX 19 #include "clang/Driver/Compilation.h" 20 #include "clang/Driver/Driver.h" 21 #include "clang/Driver/DriverDiagnostic.h" 22 #include "clang/Driver/Options.h" 23 #include "clang/Driver/Tool.h" 24 #include "clang/Driver/ToolChain.h" 25 #include "llvm/Option/ArgList.h" 26 #include "llvm/Support/CodeGen.h" 27 #include "llvm/Support/Path.h" 28 #include "llvm/Support/TargetParser.h" 29 #include "llvm/Support/VirtualFileSystem.h" 30 #include <system_error> 31 32 using namespace clang::driver; 33 using namespace clang::driver::toolchains; 34 using namespace clang; 35 using namespace llvm::opt; 36 37 using tools::addMultilibFlag; 38 39 void tools::GnuTool::anchor() {} 40 41 static bool forwardToGCC(const Option &O) { 42 // Don't forward inputs from the original command line. They are added from 43 // InputInfoList. 44 return O.getKind() != Option::InputClass && 45 !O.hasFlag(options::DriverOption) && !O.hasFlag(options::LinkerInput); 46 } 47 48 // Switch CPU names not recognized by GNU assembler to a close CPU that it does 49 // recognize, instead of a lower march from being picked in the absence of a cpu 50 // flag. 51 static void normalizeCPUNamesForAssembler(const ArgList &Args, 52 ArgStringList &CmdArgs) { 53 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) { 54 StringRef CPUArg(A->getValue()); 55 if (CPUArg.equals_lower("krait")) 56 CmdArgs.push_back("-mcpu=cortex-a15"); 57 else if(CPUArg.equals_lower("kryo")) 58 CmdArgs.push_back("-mcpu=cortex-a57"); 59 else 60 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ); 61 } 62 } 63 64 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA, 65 const InputInfo &Output, 66 const InputInfoList &Inputs, 67 const ArgList &Args, 68 const char *LinkingOutput) const { 69 const Driver &D = getToolChain().getDriver(); 70 ArgStringList CmdArgs; 71 72 for (const auto &A : Args) { 73 if (forwardToGCC(A->getOption())) { 74 // It is unfortunate that we have to claim here, as this means 75 // we will basically never report anything interesting for 76 // platforms using a generic gcc, even if we are just using gcc 77 // to get to the assembler. 78 A->claim(); 79 80 // Don't forward any -g arguments to assembly steps. 81 if (isa<AssembleJobAction>(JA) && 82 A->getOption().matches(options::OPT_g_Group)) 83 continue; 84 85 // Don't forward any -W arguments to assembly and link steps. 86 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) && 87 A->getOption().matches(options::OPT_W_Group)) 88 continue; 89 90 // Don't forward -mno-unaligned-access since GCC doesn't understand 91 // it and because it doesn't affect the assembly or link steps. 92 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) && 93 (A->getOption().matches(options::OPT_munaligned_access) || 94 A->getOption().matches(options::OPT_mno_unaligned_access))) 95 continue; 96 97 A->render(Args, CmdArgs); 98 } 99 } 100 101 RenderExtraToolArgs(JA, CmdArgs); 102 103 // If using a driver driver, force the arch. 104 if (getToolChain().getTriple().isOSDarwin()) { 105 CmdArgs.push_back("-arch"); 106 CmdArgs.push_back( 107 Args.MakeArgString(getToolChain().getDefaultUniversalArchName())); 108 } 109 110 // Try to force gcc to match the tool chain we want, if we recognize 111 // the arch. 112 // 113 // FIXME: The triple class should directly provide the information we want 114 // here. 115 switch (getToolChain().getArch()) { 116 default: 117 break; 118 case llvm::Triple::x86: 119 case llvm::Triple::ppc: 120 CmdArgs.push_back("-m32"); 121 break; 122 case llvm::Triple::x86_64: 123 case llvm::Triple::ppc64: 124 case llvm::Triple::ppc64le: 125 CmdArgs.push_back("-m64"); 126 break; 127 case llvm::Triple::sparcel: 128 CmdArgs.push_back("-EL"); 129 break; 130 } 131 132 if (Output.isFilename()) { 133 CmdArgs.push_back("-o"); 134 CmdArgs.push_back(Output.getFilename()); 135 } else { 136 assert(Output.isNothing() && "Unexpected output"); 137 CmdArgs.push_back("-fsyntax-only"); 138 } 139 140 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 141 142 // Only pass -x if gcc will understand it; otherwise hope gcc 143 // understands the suffix correctly. The main use case this would go 144 // wrong in is for linker inputs if they happened to have an odd 145 // suffix; really the only way to get this to happen is a command 146 // like '-x foobar a.c' which will treat a.c like a linker input. 147 // 148 // FIXME: For the linker case specifically, can we safely convert 149 // inputs into '-Wl,' options? 150 for (const auto &II : Inputs) { 151 // Don't try to pass LLVM or AST inputs to a generic gcc. 152 if (types::isLLVMIR(II.getType())) 153 D.Diag(clang::diag::err_drv_no_linker_llvm_support) 154 << getToolChain().getTripleString(); 155 else if (II.getType() == types::TY_AST) 156 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString(); 157 else if (II.getType() == types::TY_ModuleFile) 158 D.Diag(diag::err_drv_no_module_support) 159 << getToolChain().getTripleString(); 160 161 if (types::canTypeBeUserSpecified(II.getType())) { 162 CmdArgs.push_back("-x"); 163 CmdArgs.push_back(types::getTypeName(II.getType())); 164 } 165 166 if (II.isFilename()) 167 CmdArgs.push_back(II.getFilename()); 168 else { 169 const Arg &A = II.getInputArg(); 170 171 // Reverse translate some rewritten options. 172 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) { 173 CmdArgs.push_back("-lstdc++"); 174 continue; 175 } 176 177 // Don't render as input, we need gcc to do the translations. 178 A.render(Args, CmdArgs); 179 } 180 } 181 182 const std::string &customGCCName = D.getCCCGenericGCCName(); 183 const char *GCCName; 184 if (!customGCCName.empty()) 185 GCCName = customGCCName.c_str(); 186 else if (D.CCCIsCXX()) { 187 GCCName = "g++"; 188 } else 189 GCCName = "gcc"; 190 191 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName)); 192 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); 193 } 194 195 void tools::gcc::Preprocessor::RenderExtraToolArgs( 196 const JobAction &JA, ArgStringList &CmdArgs) const { 197 CmdArgs.push_back("-E"); 198 } 199 200 void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA, 201 ArgStringList &CmdArgs) const { 202 const Driver &D = getToolChain().getDriver(); 203 204 switch (JA.getType()) { 205 // If -flto, etc. are present then make sure not to force assembly output. 206 case types::TY_LLVM_IR: 207 case types::TY_LTO_IR: 208 case types::TY_LLVM_BC: 209 case types::TY_LTO_BC: 210 CmdArgs.push_back("-c"); 211 break; 212 // We assume we've got an "integrated" assembler in that gcc will produce an 213 // object file itself. 214 case types::TY_Object: 215 CmdArgs.push_back("-c"); 216 break; 217 case types::TY_PP_Asm: 218 CmdArgs.push_back("-S"); 219 break; 220 case types::TY_Nothing: 221 CmdArgs.push_back("-fsyntax-only"); 222 break; 223 default: 224 D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType()); 225 } 226 } 227 228 void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA, 229 ArgStringList &CmdArgs) const { 230 // The types are (hopefully) good enough. 231 } 232 233 // On Arm the endianness of the output file is determined by the target and 234 // can be overridden by the pseudo-target flags '-mlittle-endian'/'-EL' and 235 // '-mbig-endian'/'-EB'. Unlike other targets the flag does not result in a 236 // normalized triple so we must handle the flag here. 237 static bool isArmBigEndian(const llvm::Triple &Triple, 238 const ArgList &Args) { 239 bool IsBigEndian = false; 240 switch (Triple.getArch()) { 241 case llvm::Triple::armeb: 242 case llvm::Triple::thumbeb: 243 IsBigEndian = true; 244 LLVM_FALLTHROUGH; 245 case llvm::Triple::arm: 246 case llvm::Triple::thumb: 247 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian, 248 options::OPT_mbig_endian)) 249 IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian); 250 break; 251 default: 252 break; 253 } 254 return IsBigEndian; 255 } 256 257 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) { 258 switch (T.getArch()) { 259 case llvm::Triple::x86: 260 if (T.isOSIAMCU()) 261 return "elf_iamcu"; 262 return "elf_i386"; 263 case llvm::Triple::aarch64: 264 return "aarch64linux"; 265 case llvm::Triple::aarch64_be: 266 return "aarch64linuxb"; 267 case llvm::Triple::arm: 268 case llvm::Triple::thumb: 269 case llvm::Triple::armeb: 270 case llvm::Triple::thumbeb: 271 return isArmBigEndian(T, Args) ? "armelfb_linux_eabi" : "armelf_linux_eabi"; 272 case llvm::Triple::ppc: 273 return "elf32ppclinux"; 274 case llvm::Triple::ppc64: 275 return "elf64ppc"; 276 case llvm::Triple::ppc64le: 277 return "elf64lppc"; 278 case llvm::Triple::riscv32: 279 return "elf32lriscv"; 280 case llvm::Triple::riscv64: 281 return "elf64lriscv"; 282 case llvm::Triple::sparc: 283 case llvm::Triple::sparcel: 284 return "elf32_sparc"; 285 case llvm::Triple::sparcv9: 286 return "elf64_sparc"; 287 case llvm::Triple::mips: 288 return "elf32btsmip"; 289 case llvm::Triple::mipsel: 290 return "elf32ltsmip"; 291 case llvm::Triple::mips64: 292 if (tools::mips::hasMipsAbiArg(Args, "n32") || 293 T.getEnvironment() == llvm::Triple::GNUABIN32) 294 return "elf32btsmipn32"; 295 return "elf64btsmip"; 296 case llvm::Triple::mips64el: 297 if (tools::mips::hasMipsAbiArg(Args, "n32") || 298 T.getEnvironment() == llvm::Triple::GNUABIN32) 299 return "elf32ltsmipn32"; 300 return "elf64ltsmip"; 301 case llvm::Triple::systemz: 302 return "elf64_s390"; 303 case llvm::Triple::x86_64: 304 if (T.getEnvironment() == llvm::Triple::GNUX32) 305 return "elf32_x86_64"; 306 return "elf_x86_64"; 307 default: 308 return nullptr; 309 } 310 } 311 312 static bool getPIE(const ArgList &Args, const toolchains::Linux &ToolChain) { 313 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_static) || 314 Args.hasArg(options::OPT_r) || Args.hasArg(options::OPT_static_pie)) 315 return false; 316 317 Arg *A = Args.getLastArg(options::OPT_pie, options::OPT_no_pie, 318 options::OPT_nopie); 319 if (!A) 320 return ToolChain.isPIEDefault(); 321 return A->getOption().matches(options::OPT_pie); 322 } 323 324 static bool getStaticPIE(const ArgList &Args, 325 const toolchains::Linux &ToolChain) { 326 bool HasStaticPIE = Args.hasArg(options::OPT_static_pie); 327 // -no-pie is an alias for -nopie. So, handling -nopie takes care of 328 // -no-pie as well. 329 if (HasStaticPIE && Args.hasArg(options::OPT_nopie)) { 330 const Driver &D = ToolChain.getDriver(); 331 const llvm::opt::OptTable &Opts = D.getOpts(); 332 const char *StaticPIEName = Opts.getOptionName(options::OPT_static_pie); 333 const char *NoPIEName = Opts.getOptionName(options::OPT_nopie); 334 D.Diag(diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName; 335 } 336 return HasStaticPIE; 337 } 338 339 static bool getStatic(const ArgList &Args) { 340 return Args.hasArg(options::OPT_static) && 341 !Args.hasArg(options::OPT_static_pie); 342 } 343 344 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA, 345 const InputInfo &Output, 346 const InputInfoList &Inputs, 347 const ArgList &Args, 348 const char *LinkingOutput) const { 349 const toolchains::Linux &ToolChain = 350 static_cast<const toolchains::Linux &>(getToolChain()); 351 const Driver &D = ToolChain.getDriver(); 352 353 const llvm::Triple &Triple = getToolChain().getEffectiveTriple(); 354 355 const llvm::Triple::ArchType Arch = ToolChain.getArch(); 356 const bool isAndroid = ToolChain.getTriple().isAndroid(); 357 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU(); 358 const bool IsPIE = getPIE(Args, ToolChain); 359 const bool IsStaticPIE = getStaticPIE(Args, ToolChain); 360 const bool IsStatic = getStatic(Args); 361 const bool HasCRTBeginEndFiles = 362 ToolChain.getTriple().hasEnvironment() || 363 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies); 364 365 ArgStringList CmdArgs; 366 367 // Silence warning for "clang -g foo.o -o foo" 368 Args.ClaimAllArgs(options::OPT_g_Group); 369 // and "clang -emit-llvm foo.o -o foo" 370 Args.ClaimAllArgs(options::OPT_emit_llvm); 371 // and for "clang -w foo.o -o foo". Other warning options are already 372 // handled somewhere else. 373 Args.ClaimAllArgs(options::OPT_w); 374 375 if (!D.SysRoot.empty()) 376 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 377 378 if (IsPIE) 379 CmdArgs.push_back("-pie"); 380 381 if (IsStaticPIE) { 382 CmdArgs.push_back("-static"); 383 CmdArgs.push_back("-pie"); 384 CmdArgs.push_back("--no-dynamic-linker"); 385 CmdArgs.push_back("-z"); 386 CmdArgs.push_back("text"); 387 } 388 389 if (ToolChain.isNoExecStackDefault()) { 390 CmdArgs.push_back("-z"); 391 CmdArgs.push_back("noexecstack"); 392 } 393 394 if (Args.hasArg(options::OPT_rdynamic)) 395 CmdArgs.push_back("-export-dynamic"); 396 397 if (Args.hasArg(options::OPT_s)) 398 CmdArgs.push_back("-s"); 399 400 if (Triple.isARM() || Triple.isThumb() || Triple.isAArch64()) { 401 bool IsBigEndian = isArmBigEndian(Triple, Args); 402 if (IsBigEndian) 403 arm::appendBE8LinkFlag(Args, CmdArgs, Triple); 404 IsBigEndian = IsBigEndian || Arch == llvm::Triple::aarch64_be; 405 CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL"); 406 } 407 408 // Most Android ARM64 targets should enable the linker fix for erratum 409 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag. 410 if (Arch == llvm::Triple::aarch64 && isAndroid) { 411 std::string CPU = getCPUName(Args, Triple); 412 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53") 413 CmdArgs.push_back("--fix-cortex-a53-843419"); 414 } 415 416 // Android does not allow shared text relocations. Emit a warning if the 417 // user's code contains any. 418 if (isAndroid) 419 CmdArgs.push_back("--warn-shared-textrel"); 420 421 for (const auto &Opt : ToolChain.ExtraOpts) 422 CmdArgs.push_back(Opt.c_str()); 423 424 CmdArgs.push_back("--eh-frame-hdr"); 425 426 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) { 427 CmdArgs.push_back("-m"); 428 CmdArgs.push_back(LDMOption); 429 } else { 430 D.Diag(diag::err_target_unknown_triple) << Triple.str(); 431 return; 432 } 433 434 if (IsStatic) { 435 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb || 436 Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb) 437 CmdArgs.push_back("-Bstatic"); 438 else 439 CmdArgs.push_back("-static"); 440 } else if (Args.hasArg(options::OPT_shared)) { 441 CmdArgs.push_back("-shared"); 442 } 443 444 if (!IsStatic) { 445 if (Args.hasArg(options::OPT_rdynamic)) 446 CmdArgs.push_back("-export-dynamic"); 447 448 if (!Args.hasArg(options::OPT_shared) && !IsStaticPIE) { 449 const std::string Loader = 450 D.DyldPrefix + ToolChain.getDynamicLinker(Args); 451 CmdArgs.push_back("-dynamic-linker"); 452 CmdArgs.push_back(Args.MakeArgString(Loader)); 453 } 454 } 455 456 CmdArgs.push_back("-o"); 457 CmdArgs.push_back(Output.getFilename()); 458 459 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) { 460 if (!isAndroid && !IsIAMCU) { 461 const char *crt1 = nullptr; 462 if (!Args.hasArg(options::OPT_shared)) { 463 if (Args.hasArg(options::OPT_pg)) 464 crt1 = "gcrt1.o"; 465 else if (IsPIE) 466 crt1 = "Scrt1.o"; 467 else if (IsStaticPIE) 468 crt1 = "rcrt1.o"; 469 else 470 crt1 = "crt1.o"; 471 } 472 if (crt1) 473 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1))); 474 475 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o"))); 476 } 477 478 if (IsIAMCU) 479 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o"))); 480 else if (HasCRTBeginEndFiles) { 481 std::string P; 482 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT && 483 !isAndroid) { 484 std::string crtbegin = ToolChain.getCompilerRT(Args, "crtbegin", 485 ToolChain::FT_Object); 486 if (ToolChain.getVFS().exists(crtbegin)) 487 P = crtbegin; 488 } 489 if (P.empty()) { 490 const char *crtbegin; 491 if (IsStatic) 492 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o"; 493 else if (Args.hasArg(options::OPT_shared)) 494 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o"; 495 else if (IsPIE || IsStaticPIE) 496 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o"; 497 else 498 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o"; 499 P = ToolChain.GetFilePath(crtbegin); 500 } 501 CmdArgs.push_back(Args.MakeArgString(P)); 502 } 503 504 // Add crtfastmath.o if available and fast math is enabled. 505 ToolChain.AddFastMathRuntimeIfAvailable(Args, CmdArgs); 506 } 507 508 Args.AddAllArgs(CmdArgs, options::OPT_L); 509 Args.AddAllArgs(CmdArgs, options::OPT_u); 510 511 ToolChain.AddFilePathLibArgs(Args, CmdArgs); 512 513 if (D.isUsingLTO()) { 514 assert(!Inputs.empty() && "Must have at least one input."); 515 AddGoldPlugin(ToolChain, Args, CmdArgs, Output, Inputs[0], 516 D.getLTOMode() == LTOK_Thin); 517 } 518 519 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle)) 520 CmdArgs.push_back("--no-demangle"); 521 522 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs); 523 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs); 524 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA); 525 // The profile runtime also needs access to system libraries. 526 getToolChain().addProfileRTLibs(Args, CmdArgs); 527 528 if (D.CCCIsCXX() && 529 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) { 530 if (ToolChain.ShouldLinkCXXStdlib(Args)) { 531 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) && 532 !Args.hasArg(options::OPT_static); 533 if (OnlyLibstdcxxStatic) 534 CmdArgs.push_back("-Bstatic"); 535 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs); 536 if (OnlyLibstdcxxStatic) 537 CmdArgs.push_back("-Bdynamic"); 538 } 539 CmdArgs.push_back("-lm"); 540 } 541 // Silence warnings when linking C code with a C++ '-stdlib' argument. 542 Args.ClaimAllArgs(options::OPT_stdlib_EQ); 543 544 if (!Args.hasArg(options::OPT_nostdlib)) { 545 if (!Args.hasArg(options::OPT_nodefaultlibs)) { 546 if (IsStatic || IsStaticPIE) 547 CmdArgs.push_back("--start-group"); 548 549 if (NeedsSanitizerDeps) 550 linkSanitizerRuntimeDeps(ToolChain, CmdArgs); 551 552 if (NeedsXRayDeps) 553 linkXRayRuntimeDeps(ToolChain, CmdArgs); 554 555 bool WantPthread = Args.hasArg(options::OPT_pthread) || 556 Args.hasArg(options::OPT_pthreads); 557 558 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that 559 // require librt. Most modern Linux platforms do, but some may not. 560 if (addOpenMPRuntime(CmdArgs, ToolChain, Args, 561 JA.isHostOffloading(Action::OFK_OpenMP), 562 /* GompNeedsRT= */ true)) 563 // OpenMP runtimes implies pthreads when using the GNU toolchain. 564 // FIXME: Does this really make sense for all GNU toolchains? 565 WantPthread = true; 566 567 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 568 569 if (WantPthread && !isAndroid) 570 CmdArgs.push_back("-lpthread"); 571 572 if (Args.hasArg(options::OPT_fsplit_stack)) 573 CmdArgs.push_back("--wrap=pthread_create"); 574 575 if (!Args.hasArg(options::OPT_nolibc)) 576 CmdArgs.push_back("-lc"); 577 578 // Add IAMCU specific libs, if needed. 579 if (IsIAMCU) 580 CmdArgs.push_back("-lgloss"); 581 582 if (IsStatic || IsStaticPIE) 583 CmdArgs.push_back("--end-group"); 584 else 585 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 586 587 // Add IAMCU specific libs (outside the group), if needed. 588 if (IsIAMCU) { 589 CmdArgs.push_back("--as-needed"); 590 CmdArgs.push_back("-lsoftfp"); 591 CmdArgs.push_back("--no-as-needed"); 592 } 593 } 594 595 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) { 596 if (HasCRTBeginEndFiles) { 597 std::string P; 598 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT && 599 !isAndroid) { 600 std::string crtend = ToolChain.getCompilerRT(Args, "crtend", 601 ToolChain::FT_Object); 602 if (ToolChain.getVFS().exists(crtend)) 603 P = crtend; 604 } 605 if (P.empty()) { 606 const char *crtend; 607 if (Args.hasArg(options::OPT_shared)) 608 crtend = isAndroid ? "crtend_so.o" : "crtendS.o"; 609 else if (IsPIE || IsStaticPIE) 610 crtend = isAndroid ? "crtend_android.o" : "crtendS.o"; 611 else 612 crtend = isAndroid ? "crtend_android.o" : "crtend.o"; 613 P = ToolChain.GetFilePath(crtend); 614 } 615 CmdArgs.push_back(Args.MakeArgString(P)); 616 } 617 if (!isAndroid) 618 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o"))); 619 } 620 } 621 622 // Add OpenMP offloading linker script args if required. 623 AddOpenMPLinkerScript(getToolChain(), C, Output, Inputs, Args, CmdArgs, JA); 624 625 // Add HIP offloading linker script args if required. 626 AddHIPLinkerScript(getToolChain(), C, Output, Inputs, Args, CmdArgs, JA, 627 *this); 628 629 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath()); 630 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); 631 } 632 633 void tools::gnutools::Assembler::ConstructJob(Compilation &C, 634 const JobAction &JA, 635 const InputInfo &Output, 636 const InputInfoList &Inputs, 637 const ArgList &Args, 638 const char *LinkingOutput) const { 639 const auto &D = getToolChain().getDriver(); 640 641 claimNoWarnArgs(Args); 642 643 ArgStringList CmdArgs; 644 645 llvm::Reloc::Model RelocationModel; 646 unsigned PICLevel; 647 bool IsPIE; 648 std::tie(RelocationModel, PICLevel, IsPIE) = 649 ParsePICArgs(getToolChain(), Args); 650 651 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) { 652 if (A->getOption().getID() == options::OPT_gz) { 653 CmdArgs.push_back("--compress-debug-sections"); 654 } else { 655 StringRef Value = A->getValue(); 656 if (Value == "none" || Value == "zlib" || Value == "zlib-gnu") { 657 CmdArgs.push_back( 658 Args.MakeArgString("--compress-debug-sections=" + Twine(Value))); 659 } else { 660 D.Diag(diag::err_drv_unsupported_option_argument) 661 << A->getOption().getName() << Value; 662 } 663 } 664 } 665 666 if (getToolChain().isNoExecStackDefault()) { 667 CmdArgs.push_back("--noexecstack"); 668 } 669 670 switch (getToolChain().getArch()) { 671 default: 672 break; 673 // Add --32/--64 to make sure we get the format we want. 674 // This is incomplete 675 case llvm::Triple::x86: 676 CmdArgs.push_back("--32"); 677 break; 678 case llvm::Triple::x86_64: 679 if (getToolChain().getTriple().getEnvironment() == llvm::Triple::GNUX32) 680 CmdArgs.push_back("--x32"); 681 else 682 CmdArgs.push_back("--64"); 683 break; 684 case llvm::Triple::ppc: { 685 CmdArgs.push_back("-a32"); 686 CmdArgs.push_back("-mppc"); 687 CmdArgs.push_back( 688 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple()))); 689 break; 690 } 691 case llvm::Triple::ppc64: { 692 CmdArgs.push_back("-a64"); 693 CmdArgs.push_back("-mppc64"); 694 CmdArgs.push_back( 695 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple()))); 696 break; 697 } 698 case llvm::Triple::ppc64le: { 699 CmdArgs.push_back("-a64"); 700 CmdArgs.push_back("-mppc64"); 701 CmdArgs.push_back("-mlittle-endian"); 702 CmdArgs.push_back( 703 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple()))); 704 break; 705 } 706 case llvm::Triple::riscv32: 707 case llvm::Triple::riscv64: { 708 StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple()); 709 CmdArgs.push_back("-mabi"); 710 CmdArgs.push_back(ABIName.data()); 711 if (const Arg *A = Args.getLastArg(options::OPT_march_EQ)) { 712 StringRef MArch = A->getValue(); 713 CmdArgs.push_back("-march"); 714 CmdArgs.push_back(MArch.data()); 715 } 716 break; 717 } 718 case llvm::Triple::sparc: 719 case llvm::Triple::sparcel: { 720 CmdArgs.push_back("-32"); 721 std::string CPU = getCPUName(Args, getToolChain().getTriple()); 722 CmdArgs.push_back( 723 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 724 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 725 break; 726 } 727 case llvm::Triple::sparcv9: { 728 CmdArgs.push_back("-64"); 729 std::string CPU = getCPUName(Args, getToolChain().getTriple()); 730 CmdArgs.push_back( 731 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 732 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 733 break; 734 } 735 case llvm::Triple::arm: 736 case llvm::Triple::armeb: 737 case llvm::Triple::thumb: 738 case llvm::Triple::thumbeb: { 739 const llvm::Triple &Triple2 = getToolChain().getTriple(); 740 CmdArgs.push_back(isArmBigEndian(Triple2, Args) ? "-EB" : "-EL"); 741 switch (Triple2.getSubArch()) { 742 case llvm::Triple::ARMSubArch_v7: 743 CmdArgs.push_back("-mfpu=neon"); 744 break; 745 case llvm::Triple::ARMSubArch_v8: 746 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8"); 747 break; 748 default: 749 break; 750 } 751 752 switch (arm::getARMFloatABI(getToolChain(), Args)) { 753 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!"); 754 case arm::FloatABI::Soft: 755 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft")); 756 break; 757 case arm::FloatABI::SoftFP: 758 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp")); 759 break; 760 case arm::FloatABI::Hard: 761 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard")); 762 break; 763 } 764 765 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 766 normalizeCPUNamesForAssembler(Args, CmdArgs); 767 768 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ); 769 break; 770 } 771 case llvm::Triple::aarch64: 772 case llvm::Triple::aarch64_be: { 773 CmdArgs.push_back( 774 getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL"); 775 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 776 normalizeCPUNamesForAssembler(Args, CmdArgs); 777 778 break; 779 } 780 case llvm::Triple::mips: 781 case llvm::Triple::mipsel: 782 case llvm::Triple::mips64: 783 case llvm::Triple::mips64el: { 784 StringRef CPUName; 785 StringRef ABIName; 786 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName); 787 ABIName = mips::getGnuCompatibleMipsABIName(ABIName); 788 789 CmdArgs.push_back("-march"); 790 CmdArgs.push_back(CPUName.data()); 791 792 CmdArgs.push_back("-mabi"); 793 CmdArgs.push_back(ABIName.data()); 794 795 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE, 796 // or -mshared (not implemented) is in effect. 797 if (RelocationModel == llvm::Reloc::Static) 798 CmdArgs.push_back("-mno-shared"); 799 800 // LLVM doesn't support -mplt yet and acts as if it is always given. 801 // However, -mplt has no effect with the N64 ABI. 802 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls)) 803 CmdArgs.push_back("-call_nonpic"); 804 805 if (getToolChain().getTriple().isLittleEndian()) 806 CmdArgs.push_back("-EL"); 807 else 808 CmdArgs.push_back("-EB"); 809 810 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) { 811 if (StringRef(A->getValue()) == "2008") 812 CmdArgs.push_back(Args.MakeArgString("-mnan=2008")); 813 } 814 815 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default. 816 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx, 817 options::OPT_mfp64)) { 818 A->claim(); 819 A->render(Args, CmdArgs); 820 } else if (mips::shouldUseFPXX( 821 Args, getToolChain().getTriple(), CPUName, ABIName, 822 mips::getMipsFloatABI(getToolChain().getDriver(), Args, 823 getToolChain().getTriple()))) 824 CmdArgs.push_back("-mfpxx"); 825 826 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of 827 // -mno-mips16 is actually -no-mips16. 828 if (Arg *A = 829 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) { 830 if (A->getOption().matches(options::OPT_mips16)) { 831 A->claim(); 832 A->render(Args, CmdArgs); 833 } else { 834 A->claim(); 835 CmdArgs.push_back("-no-mips16"); 836 } 837 } 838 839 Args.AddLastArg(CmdArgs, options::OPT_mmicromips, 840 options::OPT_mno_micromips); 841 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp); 842 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2); 843 844 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) { 845 // Do not use AddLastArg because not all versions of MIPS assembler 846 // support -mmsa / -mno-msa options. 847 if (A->getOption().matches(options::OPT_mmsa)) 848 CmdArgs.push_back(Args.MakeArgString("-mmsa")); 849 } 850 851 Args.AddLastArg(CmdArgs, options::OPT_mhard_float, 852 options::OPT_msoft_float); 853 854 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float, 855 options::OPT_msingle_float); 856 857 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg, 858 options::OPT_mno_odd_spreg); 859 860 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 861 break; 862 } 863 case llvm::Triple::systemz: { 864 // Always pass an -march option, since our default of z10 is later 865 // than the GNU assembler's default. 866 StringRef CPUName = systemz::getSystemZTargetCPU(Args); 867 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName)); 868 break; 869 } 870 } 871 872 Args.AddAllArgs(CmdArgs, options::OPT_I); 873 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 874 875 CmdArgs.push_back("-o"); 876 CmdArgs.push_back(Output.getFilename()); 877 878 for (const auto &II : Inputs) 879 CmdArgs.push_back(II.getFilename()); 880 881 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath("as")); 882 C.addCommand(llvm::make_unique<Command>(JA, *this, Exec, CmdArgs, Inputs)); 883 884 // Handle the debug info splitting at object creation time if we're 885 // creating an object. 886 // TODO: Currently only works on linux with newer objcopy. 887 if (Args.hasArg(options::OPT_gsplit_dwarf) && 888 getToolChain().getTriple().isOSLinux()) 889 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, 890 SplitDebugName(Args, Inputs[0], Output)); 891 } 892 893 namespace { 894 // Filter to remove Multilibs that don't exist as a suffix to Path 895 class FilterNonExistent { 896 StringRef Base, File; 897 llvm::vfs::FileSystem &VFS; 898 899 public: 900 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS) 901 : Base(Base), File(File), VFS(VFS) {} 902 bool operator()(const Multilib &M) { 903 return !VFS.exists(Base + M.gccSuffix() + File); 904 } 905 }; 906 } // end anonymous namespace 907 908 static bool isSoftFloatABI(const ArgList &Args) { 909 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float, 910 options::OPT_mfloat_abi_EQ); 911 if (!A) 912 return false; 913 914 return A->getOption().matches(options::OPT_msoft_float) || 915 (A->getOption().matches(options::OPT_mfloat_abi_EQ) && 916 A->getValue() == StringRef("soft")); 917 } 918 919 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) { 920 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb; 921 } 922 923 static bool isMipsEL(llvm::Triple::ArchType Arch) { 924 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el; 925 } 926 927 static bool isMips16(const ArgList &Args) { 928 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16); 929 return A && A->getOption().matches(options::OPT_mips16); 930 } 931 932 static bool isMicroMips(const ArgList &Args) { 933 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips); 934 return A && A->getOption().matches(options::OPT_mmicromips); 935 } 936 937 static bool isMSP430(llvm::Triple::ArchType Arch) { 938 return Arch == llvm::Triple::msp430; 939 } 940 941 static Multilib makeMultilib(StringRef commonSuffix) { 942 return Multilib(commonSuffix, commonSuffix, commonSuffix); 943 } 944 945 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags, 946 FilterNonExistent &NonExistent, 947 DetectedMultilibs &Result) { 948 // Check for Code Sourcery toolchain multilibs 949 MultilibSet CSMipsMultilibs; 950 { 951 auto MArchMips16 = makeMultilib("/mips16").flag("+m32").flag("+mips16"); 952 953 auto MArchMicroMips = 954 makeMultilib("/micromips").flag("+m32").flag("+mmicromips"); 955 956 auto MArchDefault = makeMultilib("").flag("-mips16").flag("-mmicromips"); 957 958 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc"); 959 960 auto SoftFloat = makeMultilib("/soft-float").flag("+msoft-float"); 961 962 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008"); 963 964 auto DefaultFloat = 965 makeMultilib("").flag("-msoft-float").flag("-mnan=2008"); 966 967 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL"); 968 969 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 970 971 // Note that this one's osSuffix is "" 972 auto MAbi64 = makeMultilib("") 973 .gccSuffix("/64") 974 .includeSuffix("/64") 975 .flag("+mabi=n64") 976 .flag("-mabi=n32") 977 .flag("-m32"); 978 979 CSMipsMultilibs = 980 MultilibSet() 981 .Either(MArchMips16, MArchMicroMips, MArchDefault) 982 .Maybe(UCLibc) 983 .Either(SoftFloat, Nan2008, DefaultFloat) 984 .FilterOut("/micromips/nan2008") 985 .FilterOut("/mips16/nan2008") 986 .Either(BigEndian, LittleEndian) 987 .Maybe(MAbi64) 988 .FilterOut("/mips16.*/64") 989 .FilterOut("/micromips.*/64") 990 .FilterOut(NonExistent) 991 .setIncludeDirsCallback([](const Multilib &M) { 992 std::vector<std::string> Dirs({"/include"}); 993 if (StringRef(M.includeSuffix()).startswith("/uclibc")) 994 Dirs.push_back( 995 "/../../../../mips-linux-gnu/libc/uclibc/usr/include"); 996 else 997 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include"); 998 return Dirs; 999 }); 1000 } 1001 1002 MultilibSet DebianMipsMultilibs; 1003 { 1004 Multilib MAbiN32 = 1005 Multilib().gccSuffix("/n32").includeSuffix("/n32").flag("+mabi=n32"); 1006 1007 Multilib M64 = Multilib() 1008 .gccSuffix("/64") 1009 .includeSuffix("/64") 1010 .flag("+m64") 1011 .flag("-m32") 1012 .flag("-mabi=n32"); 1013 1014 Multilib M32 = Multilib().flag("-m64").flag("+m32").flag("-mabi=n32"); 1015 1016 DebianMipsMultilibs = 1017 MultilibSet().Either(M32, M64, MAbiN32).FilterOut(NonExistent); 1018 } 1019 1020 // Sort candidates. Toolchain that best meets the directories tree goes first. 1021 // Then select the first toolchains matches command line flags. 1022 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs}; 1023 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size()) 1024 std::iter_swap(Candidates, Candidates + 1); 1025 for (const MultilibSet *Candidate : Candidates) { 1026 if (Candidate->select(Flags, Result.SelectedMultilib)) { 1027 if (Candidate == &DebianMipsMultilibs) 1028 Result.BiarchSibling = Multilib(); 1029 Result.Multilibs = *Candidate; 1030 return true; 1031 } 1032 } 1033 return false; 1034 } 1035 1036 static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path, 1037 const Multilib::flags_list &Flags, 1038 FilterNonExistent &NonExistent, 1039 DetectedMultilibs &Result) { 1040 1041 MultilibSet AndroidMipsMultilibs = 1042 MultilibSet() 1043 .Maybe(Multilib("/mips-r2").flag("+march=mips32r2")) 1044 .Maybe(Multilib("/mips-r6").flag("+march=mips32r6")) 1045 .FilterOut(NonExistent); 1046 1047 MultilibSet AndroidMipselMultilibs = 1048 MultilibSet() 1049 .Either(Multilib().flag("+march=mips32"), 1050 Multilib("/mips-r2", "", "/mips-r2").flag("+march=mips32r2"), 1051 Multilib("/mips-r6", "", "/mips-r6").flag("+march=mips32r6")) 1052 .FilterOut(NonExistent); 1053 1054 MultilibSet AndroidMips64elMultilibs = 1055 MultilibSet() 1056 .Either( 1057 Multilib().flag("+march=mips64r6"), 1058 Multilib("/32/mips-r1", "", "/mips-r1").flag("+march=mips32"), 1059 Multilib("/32/mips-r2", "", "/mips-r2").flag("+march=mips32r2"), 1060 Multilib("/32/mips-r6", "", "/mips-r6").flag("+march=mips32r6")) 1061 .FilterOut(NonExistent); 1062 1063 MultilibSet *MS = &AndroidMipsMultilibs; 1064 if (VFS.exists(Path + "/mips-r6")) 1065 MS = &AndroidMipselMultilibs; 1066 else if (VFS.exists(Path + "/32")) 1067 MS = &AndroidMips64elMultilibs; 1068 if (MS->select(Flags, Result.SelectedMultilib)) { 1069 Result.Multilibs = *MS; 1070 return true; 1071 } 1072 return false; 1073 } 1074 1075 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags, 1076 FilterNonExistent &NonExistent, 1077 DetectedMultilibs &Result) { 1078 // Musl toolchain multilibs 1079 MultilibSet MuslMipsMultilibs; 1080 { 1081 auto MArchMipsR2 = makeMultilib("") 1082 .osSuffix("/mips-r2-hard-musl") 1083 .flag("+EB") 1084 .flag("-EL") 1085 .flag("+march=mips32r2"); 1086 1087 auto MArchMipselR2 = makeMultilib("/mipsel-r2-hard-musl") 1088 .flag("-EB") 1089 .flag("+EL") 1090 .flag("+march=mips32r2"); 1091 1092 MuslMipsMultilibs = MultilibSet().Either(MArchMipsR2, MArchMipselR2); 1093 1094 // Specify the callback that computes the include directories. 1095 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) { 1096 return std::vector<std::string>( 1097 {"/../sysroot" + M.osSuffix() + "/usr/include"}); 1098 }); 1099 } 1100 if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilib)) { 1101 Result.Multilibs = MuslMipsMultilibs; 1102 return true; 1103 } 1104 return false; 1105 } 1106 1107 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags, 1108 FilterNonExistent &NonExistent, 1109 DetectedMultilibs &Result) { 1110 // CodeScape MTI toolchain v1.2 and early. 1111 MultilibSet MtiMipsMultilibsV1; 1112 { 1113 auto MArchMips32 = makeMultilib("/mips32") 1114 .flag("+m32") 1115 .flag("-m64") 1116 .flag("-mmicromips") 1117 .flag("+march=mips32"); 1118 1119 auto MArchMicroMips = makeMultilib("/micromips") 1120 .flag("+m32") 1121 .flag("-m64") 1122 .flag("+mmicromips"); 1123 1124 auto MArchMips64r2 = makeMultilib("/mips64r2") 1125 .flag("-m32") 1126 .flag("+m64") 1127 .flag("+march=mips64r2"); 1128 1129 auto MArchMips64 = makeMultilib("/mips64").flag("-m32").flag("+m64").flag( 1130 "-march=mips64r2"); 1131 1132 auto MArchDefault = makeMultilib("") 1133 .flag("+m32") 1134 .flag("-m64") 1135 .flag("-mmicromips") 1136 .flag("+march=mips32r2"); 1137 1138 auto Mips16 = makeMultilib("/mips16").flag("+mips16"); 1139 1140 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc"); 1141 1142 auto MAbi64 = 1143 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32"); 1144 1145 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL"); 1146 1147 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 1148 1149 auto SoftFloat = makeMultilib("/sof").flag("+msoft-float"); 1150 1151 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008"); 1152 1153 MtiMipsMultilibsV1 = 1154 MultilibSet() 1155 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64, 1156 MArchDefault) 1157 .Maybe(UCLibc) 1158 .Maybe(Mips16) 1159 .FilterOut("/mips64/mips16") 1160 .FilterOut("/mips64r2/mips16") 1161 .FilterOut("/micromips/mips16") 1162 .Maybe(MAbi64) 1163 .FilterOut("/micromips/64") 1164 .FilterOut("/mips32/64") 1165 .FilterOut("^/64") 1166 .FilterOut("/mips16/64") 1167 .Either(BigEndian, LittleEndian) 1168 .Maybe(SoftFloat) 1169 .Maybe(Nan2008) 1170 .FilterOut(".*sof/nan2008") 1171 .FilterOut(NonExistent) 1172 .setIncludeDirsCallback([](const Multilib &M) { 1173 std::vector<std::string> Dirs({"/include"}); 1174 if (StringRef(M.includeSuffix()).startswith("/uclibc")) 1175 Dirs.push_back("/../../../../sysroot/uclibc/usr/include"); 1176 else 1177 Dirs.push_back("/../../../../sysroot/usr/include"); 1178 return Dirs; 1179 }); 1180 } 1181 1182 // CodeScape IMG toolchain starting from v1.3. 1183 MultilibSet MtiMipsMultilibsV2; 1184 { 1185 auto BeHard = makeMultilib("/mips-r2-hard") 1186 .flag("+EB") 1187 .flag("-msoft-float") 1188 .flag("-mnan=2008") 1189 .flag("-muclibc"); 1190 auto BeSoft = makeMultilib("/mips-r2-soft") 1191 .flag("+EB") 1192 .flag("+msoft-float") 1193 .flag("-mnan=2008"); 1194 auto ElHard = makeMultilib("/mipsel-r2-hard") 1195 .flag("+EL") 1196 .flag("-msoft-float") 1197 .flag("-mnan=2008") 1198 .flag("-muclibc"); 1199 auto ElSoft = makeMultilib("/mipsel-r2-soft") 1200 .flag("+EL") 1201 .flag("+msoft-float") 1202 .flag("-mnan=2008") 1203 .flag("-mmicromips"); 1204 auto BeHardNan = makeMultilib("/mips-r2-hard-nan2008") 1205 .flag("+EB") 1206 .flag("-msoft-float") 1207 .flag("+mnan=2008") 1208 .flag("-muclibc"); 1209 auto ElHardNan = makeMultilib("/mipsel-r2-hard-nan2008") 1210 .flag("+EL") 1211 .flag("-msoft-float") 1212 .flag("+mnan=2008") 1213 .flag("-muclibc") 1214 .flag("-mmicromips"); 1215 auto BeHardNanUclibc = makeMultilib("/mips-r2-hard-nan2008-uclibc") 1216 .flag("+EB") 1217 .flag("-msoft-float") 1218 .flag("+mnan=2008") 1219 .flag("+muclibc"); 1220 auto ElHardNanUclibc = makeMultilib("/mipsel-r2-hard-nan2008-uclibc") 1221 .flag("+EL") 1222 .flag("-msoft-float") 1223 .flag("+mnan=2008") 1224 .flag("+muclibc"); 1225 auto BeHardUclibc = makeMultilib("/mips-r2-hard-uclibc") 1226 .flag("+EB") 1227 .flag("-msoft-float") 1228 .flag("-mnan=2008") 1229 .flag("+muclibc"); 1230 auto ElHardUclibc = makeMultilib("/mipsel-r2-hard-uclibc") 1231 .flag("+EL") 1232 .flag("-msoft-float") 1233 .flag("-mnan=2008") 1234 .flag("+muclibc"); 1235 auto ElMicroHardNan = makeMultilib("/micromipsel-r2-hard-nan2008") 1236 .flag("+EL") 1237 .flag("-msoft-float") 1238 .flag("+mnan=2008") 1239 .flag("+mmicromips"); 1240 auto ElMicroSoft = makeMultilib("/micromipsel-r2-soft") 1241 .flag("+EL") 1242 .flag("+msoft-float") 1243 .flag("-mnan=2008") 1244 .flag("+mmicromips"); 1245 1246 auto O32 = 1247 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64"); 1248 auto N32 = 1249 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64"); 1250 auto N64 = 1251 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64"); 1252 1253 MtiMipsMultilibsV2 = 1254 MultilibSet() 1255 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan, 1256 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc, 1257 ElHardUclibc, ElMicroHardNan, ElMicroSoft}) 1258 .Either(O32, N32, N64) 1259 .FilterOut(NonExistent) 1260 .setIncludeDirsCallback([](const Multilib &M) { 1261 return std::vector<std::string>({"/../../../../sysroot" + 1262 M.includeSuffix() + 1263 "/../usr/include"}); 1264 }) 1265 .setFilePathsCallback([](const Multilib &M) { 1266 return std::vector<std::string>( 1267 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()}); 1268 }); 1269 } 1270 for (auto Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) { 1271 if (Candidate->select(Flags, Result.SelectedMultilib)) { 1272 Result.Multilibs = *Candidate; 1273 return true; 1274 } 1275 } 1276 return false; 1277 } 1278 1279 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags, 1280 FilterNonExistent &NonExistent, 1281 DetectedMultilibs &Result) { 1282 // CodeScape IMG toolchain v1.2 and early. 1283 MultilibSet ImgMultilibsV1; 1284 { 1285 auto Mips64r6 = makeMultilib("/mips64r6").flag("+m64").flag("-m32"); 1286 1287 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 1288 1289 auto MAbi64 = 1290 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32"); 1291 1292 ImgMultilibsV1 = 1293 MultilibSet() 1294 .Maybe(Mips64r6) 1295 .Maybe(MAbi64) 1296 .Maybe(LittleEndian) 1297 .FilterOut(NonExistent) 1298 .setIncludeDirsCallback([](const Multilib &M) { 1299 return std::vector<std::string>( 1300 {"/include", "/../../../../sysroot/usr/include"}); 1301 }); 1302 } 1303 1304 // CodeScape IMG toolchain starting from v1.3. 1305 MultilibSet ImgMultilibsV2; 1306 { 1307 auto BeHard = makeMultilib("/mips-r6-hard") 1308 .flag("+EB") 1309 .flag("-msoft-float") 1310 .flag("-mmicromips"); 1311 auto BeSoft = makeMultilib("/mips-r6-soft") 1312 .flag("+EB") 1313 .flag("+msoft-float") 1314 .flag("-mmicromips"); 1315 auto ElHard = makeMultilib("/mipsel-r6-hard") 1316 .flag("+EL") 1317 .flag("-msoft-float") 1318 .flag("-mmicromips"); 1319 auto ElSoft = makeMultilib("/mipsel-r6-soft") 1320 .flag("+EL") 1321 .flag("+msoft-float") 1322 .flag("-mmicromips"); 1323 auto BeMicroHard = makeMultilib("/micromips-r6-hard") 1324 .flag("+EB") 1325 .flag("-msoft-float") 1326 .flag("+mmicromips"); 1327 auto BeMicroSoft = makeMultilib("/micromips-r6-soft") 1328 .flag("+EB") 1329 .flag("+msoft-float") 1330 .flag("+mmicromips"); 1331 auto ElMicroHard = makeMultilib("/micromipsel-r6-hard") 1332 .flag("+EL") 1333 .flag("-msoft-float") 1334 .flag("+mmicromips"); 1335 auto ElMicroSoft = makeMultilib("/micromipsel-r6-soft") 1336 .flag("+EL") 1337 .flag("+msoft-float") 1338 .flag("+mmicromips"); 1339 1340 auto O32 = 1341 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64"); 1342 auto N32 = 1343 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64"); 1344 auto N64 = 1345 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64"); 1346 1347 ImgMultilibsV2 = 1348 MultilibSet() 1349 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft, 1350 ElMicroHard, ElMicroSoft}) 1351 .Either(O32, N32, N64) 1352 .FilterOut(NonExistent) 1353 .setIncludeDirsCallback([](const Multilib &M) { 1354 return std::vector<std::string>({"/../../../../sysroot" + 1355 M.includeSuffix() + 1356 "/../usr/include"}); 1357 }) 1358 .setFilePathsCallback([](const Multilib &M) { 1359 return std::vector<std::string>( 1360 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()}); 1361 }); 1362 } 1363 for (auto Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) { 1364 if (Candidate->select(Flags, Result.SelectedMultilib)) { 1365 Result.Multilibs = *Candidate; 1366 return true; 1367 } 1368 } 1369 return false; 1370 } 1371 1372 bool clang::driver::findMIPSMultilibs(const Driver &D, 1373 const llvm::Triple &TargetTriple, 1374 StringRef Path, const ArgList &Args, 1375 DetectedMultilibs &Result) { 1376 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1377 1378 StringRef CPUName; 1379 StringRef ABIName; 1380 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName); 1381 1382 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 1383 1384 Multilib::flags_list Flags; 1385 addMultilibFlag(TargetTriple.isMIPS32(), "m32", Flags); 1386 addMultilibFlag(TargetTriple.isMIPS64(), "m64", Flags); 1387 addMultilibFlag(isMips16(Args), "mips16", Flags); 1388 addMultilibFlag(CPUName == "mips32", "march=mips32", Flags); 1389 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" || 1390 CPUName == "mips32r5" || CPUName == "p5600", 1391 "march=mips32r2", Flags); 1392 addMultilibFlag(CPUName == "mips32r6", "march=mips32r6", Flags); 1393 addMultilibFlag(CPUName == "mips64", "march=mips64", Flags); 1394 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" || 1395 CPUName == "mips64r5" || CPUName == "octeon" || 1396 CPUName == "octeon+", 1397 "march=mips64r2", Flags); 1398 addMultilibFlag(CPUName == "mips64r6", "march=mips64r6", Flags); 1399 addMultilibFlag(isMicroMips(Args), "mmicromips", Flags); 1400 addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags); 1401 addMultilibFlag(tools::mips::isNaN2008(Args, TargetTriple), "mnan=2008", 1402 Flags); 1403 addMultilibFlag(ABIName == "n32", "mabi=n32", Flags); 1404 addMultilibFlag(ABIName == "n64", "mabi=n64", Flags); 1405 addMultilibFlag(isSoftFloatABI(Args), "msoft-float", Flags); 1406 addMultilibFlag(!isSoftFloatABI(Args), "mhard-float", Flags); 1407 addMultilibFlag(isMipsEL(TargetArch), "EL", Flags); 1408 addMultilibFlag(!isMipsEL(TargetArch), "EB", Flags); 1409 1410 if (TargetTriple.isAndroid()) 1411 return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent, 1412 Result); 1413 1414 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1415 TargetTriple.getOS() == llvm::Triple::Linux && 1416 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment) 1417 return findMipsMuslMultilibs(Flags, NonExistent, Result); 1418 1419 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1420 TargetTriple.getOS() == llvm::Triple::Linux && 1421 TargetTriple.isGNUEnvironment()) 1422 return findMipsMtiMultilibs(Flags, NonExistent, Result); 1423 1424 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies && 1425 TargetTriple.getOS() == llvm::Triple::Linux && 1426 TargetTriple.isGNUEnvironment()) 1427 return findMipsImgMultilibs(Flags, NonExistent, Result); 1428 1429 if (findMipsCsMultilibs(Flags, NonExistent, Result)) 1430 return true; 1431 1432 // Fallback to the regular toolchain-tree structure. 1433 Multilib Default; 1434 Result.Multilibs.push_back(Default); 1435 Result.Multilibs.FilterOut(NonExistent); 1436 1437 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) { 1438 Result.BiarchSibling = Multilib(); 1439 return true; 1440 } 1441 1442 return false; 1443 } 1444 1445 static void findAndroidArmMultilibs(const Driver &D, 1446 const llvm::Triple &TargetTriple, 1447 StringRef Path, const ArgList &Args, 1448 DetectedMultilibs &Result) { 1449 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb. 1450 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1451 Multilib ArmV7Multilib = makeMultilib("/armv7-a") 1452 .flag("+march=armv7-a") 1453 .flag("-mthumb"); 1454 Multilib ThumbMultilib = makeMultilib("/thumb") 1455 .flag("-march=armv7-a") 1456 .flag("+mthumb"); 1457 Multilib ArmV7ThumbMultilib = makeMultilib("/armv7-a/thumb") 1458 .flag("+march=armv7-a") 1459 .flag("+mthumb"); 1460 Multilib DefaultMultilib = makeMultilib("") 1461 .flag("-march=armv7-a") 1462 .flag("-mthumb"); 1463 MultilibSet AndroidArmMultilibs = 1464 MultilibSet() 1465 .Either(ThumbMultilib, ArmV7Multilib, 1466 ArmV7ThumbMultilib, DefaultMultilib) 1467 .FilterOut(NonExistent); 1468 1469 Multilib::flags_list Flags; 1470 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ); 1471 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm; 1472 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb; 1473 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7; 1474 bool IsThumbMode = IsThumbArch || 1475 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) || 1476 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB); 1477 bool IsArmV7Mode = (IsArmArch || IsThumbArch) && 1478 (llvm::ARM::parseArchVersion(Arch) == 7 || 1479 (IsArmArch && Arch == "" && IsV7SubArch)); 1480 addMultilibFlag(IsArmV7Mode, "march=armv7-a", Flags); 1481 addMultilibFlag(IsThumbMode, "mthumb", Flags); 1482 1483 if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilib)) 1484 Result.Multilibs = AndroidArmMultilibs; 1485 } 1486 1487 static bool findMSP430Multilibs(const Driver &D, 1488 const llvm::Triple &TargetTriple, 1489 StringRef Path, const ArgList &Args, 1490 DetectedMultilibs &Result) { 1491 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1492 Multilib MSP430Multilib = makeMultilib("/430"); 1493 // FIXME: when clang starts to support msp430x ISA additional logic 1494 // to select between multilib must be implemented 1495 // Multilib MSP430xMultilib = makeMultilib("/large"); 1496 1497 Result.Multilibs.push_back(MSP430Multilib); 1498 Result.Multilibs.FilterOut(NonExistent); 1499 1500 Multilib::flags_list Flags; 1501 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) 1502 return true; 1503 1504 return false; 1505 } 1506 1507 static void findRISCVMultilibs(const Driver &D, 1508 const llvm::Triple &TargetTriple, StringRef Path, 1509 const ArgList &Args, DetectedMultilibs &Result) { 1510 1511 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1512 Multilib Ilp32 = makeMultilib("lib32/ilp32").flag("+m32").flag("+mabi=ilp32"); 1513 Multilib Ilp32f = 1514 makeMultilib("lib32/ilp32f").flag("+m32").flag("+mabi=ilp32f"); 1515 Multilib Ilp32d = 1516 makeMultilib("lib32/ilp32d").flag("+m32").flag("+mabi=ilp32d"); 1517 Multilib Lp64 = makeMultilib("lib64/lp64").flag("+m64").flag("+mabi=lp64"); 1518 Multilib Lp64f = makeMultilib("lib64/lp64f").flag("+m64").flag("+mabi=lp64f"); 1519 Multilib Lp64d = makeMultilib("lib64/lp64d").flag("+m64").flag("+mabi=lp64d"); 1520 MultilibSet RISCVMultilibs = 1521 MultilibSet() 1522 .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d}) 1523 .FilterOut(NonExistent); 1524 1525 Multilib::flags_list Flags; 1526 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64; 1527 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple); 1528 1529 addMultilibFlag(!IsRV64, "m32", Flags); 1530 addMultilibFlag(IsRV64, "m64", Flags); 1531 addMultilibFlag(ABIName == "ilp32", "mabi=ilp32", Flags); 1532 addMultilibFlag(ABIName == "ilp32f", "mabi=ilp32f", Flags); 1533 addMultilibFlag(ABIName == "ilp32d", "mabi=ilp32d", Flags); 1534 addMultilibFlag(ABIName == "lp64", "mabi=lp64", Flags); 1535 addMultilibFlag(ABIName == "lp64f", "mabi=lp64f", Flags); 1536 addMultilibFlag(ABIName == "lp64d", "mabi=lp64d", Flags); 1537 1538 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib)) 1539 Result.Multilibs = RISCVMultilibs; 1540 } 1541 1542 static bool findBiarchMultilibs(const Driver &D, 1543 const llvm::Triple &TargetTriple, 1544 StringRef Path, const ArgList &Args, 1545 bool NeedsBiarchSuffix, 1546 DetectedMultilibs &Result) { 1547 Multilib Default; 1548 1549 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs 1550 // in what would normally be GCCInstallPath and put the 64-bit 1551 // libs in a subdirectory named 64. The simple logic we follow is that 1552 // *if* there is a subdirectory of the right name with crtbegin.o in it, 1553 // we use that. If not, and if not a biarch triple alias, we look for 1554 // crtbegin.o without the subdirectory. 1555 1556 StringRef Suff64 = "/64"; 1557 // Solaris uses platform-specific suffixes instead of /64. 1558 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 1559 switch (TargetTriple.getArch()) { 1560 case llvm::Triple::x86: 1561 case llvm::Triple::x86_64: 1562 Suff64 = "/amd64"; 1563 break; 1564 case llvm::Triple::sparc: 1565 case llvm::Triple::sparcv9: 1566 Suff64 = "/sparcv9"; 1567 break; 1568 default: 1569 break; 1570 } 1571 } 1572 1573 Multilib Alt64 = Multilib() 1574 .gccSuffix(Suff64) 1575 .includeSuffix(Suff64) 1576 .flag("-m32") 1577 .flag("+m64") 1578 .flag("-mx32"); 1579 Multilib Alt32 = Multilib() 1580 .gccSuffix("/32") 1581 .includeSuffix("/32") 1582 .flag("+m32") 1583 .flag("-m64") 1584 .flag("-mx32"); 1585 Multilib Altx32 = Multilib() 1586 .gccSuffix("/x32") 1587 .includeSuffix("/x32") 1588 .flag("-m32") 1589 .flag("-m64") 1590 .flag("+mx32"); 1591 1592 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a. 1593 FilterNonExistent NonExistent( 1594 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS()); 1595 1596 // Determine default multilib from: 32, 64, x32 1597 // Also handle cases such as 64 on 32, 32 on 64, etc. 1598 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN; 1599 const bool IsX32 = TargetTriple.getEnvironment() == llvm::Triple::GNUX32; 1600 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32)) 1601 Want = WANT64; 1602 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32)) 1603 Want = WANT64; 1604 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64)) 1605 Want = WANT32; 1606 else { 1607 if (TargetTriple.isArch32Bit()) 1608 Want = NeedsBiarchSuffix ? WANT64 : WANT32; 1609 else if (IsX32) 1610 Want = NeedsBiarchSuffix ? WANT64 : WANTX32; 1611 else 1612 Want = NeedsBiarchSuffix ? WANT32 : WANT64; 1613 } 1614 1615 if (Want == WANT32) 1616 Default.flag("+m32").flag("-m64").flag("-mx32"); 1617 else if (Want == WANT64) 1618 Default.flag("-m32").flag("+m64").flag("-mx32"); 1619 else if (Want == WANTX32) 1620 Default.flag("-m32").flag("-m64").flag("+mx32"); 1621 else 1622 return false; 1623 1624 Result.Multilibs.push_back(Default); 1625 Result.Multilibs.push_back(Alt64); 1626 Result.Multilibs.push_back(Alt32); 1627 Result.Multilibs.push_back(Altx32); 1628 1629 Result.Multilibs.FilterOut(NonExistent); 1630 1631 Multilib::flags_list Flags; 1632 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "m64", Flags); 1633 addMultilibFlag(TargetTriple.isArch32Bit(), "m32", Flags); 1634 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "mx32", Flags); 1635 1636 if (!Result.Multilibs.select(Flags, Result.SelectedMultilib)) 1637 return false; 1638 1639 if (Result.SelectedMultilib == Alt64 || Result.SelectedMultilib == Alt32 || 1640 Result.SelectedMultilib == Altx32) 1641 Result.BiarchSibling = Default; 1642 1643 return true; 1644 } 1645 1646 /// Generic_GCC - A tool chain using the 'gcc' command to perform 1647 /// all subcommands; this relies on gcc translating the majority of 1648 /// command line options. 1649 1650 /// Less-than for GCCVersion, implementing a Strict Weak Ordering. 1651 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor, 1652 int RHSPatch, 1653 StringRef RHSPatchSuffix) const { 1654 if (Major != RHSMajor) 1655 return Major < RHSMajor; 1656 if (Minor != RHSMinor) 1657 return Minor < RHSMinor; 1658 if (Patch != RHSPatch) { 1659 // Note that versions without a specified patch sort higher than those with 1660 // a patch. 1661 if (RHSPatch == -1) 1662 return true; 1663 if (Patch == -1) 1664 return false; 1665 1666 // Otherwise just sort on the patch itself. 1667 return Patch < RHSPatch; 1668 } 1669 if (PatchSuffix != RHSPatchSuffix) { 1670 // Sort empty suffixes higher. 1671 if (RHSPatchSuffix.empty()) 1672 return true; 1673 if (PatchSuffix.empty()) 1674 return false; 1675 1676 // Provide a lexicographic sort to make this a total ordering. 1677 return PatchSuffix < RHSPatchSuffix; 1678 } 1679 1680 // The versions are equal. 1681 return false; 1682 } 1683 1684 /// Parse a GCCVersion object out of a string of text. 1685 /// 1686 /// This is the primary means of forming GCCVersion objects. 1687 /*static*/ 1688 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) { 1689 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 1690 std::pair<StringRef, StringRef> First = VersionText.split('.'); 1691 std::pair<StringRef, StringRef> Second = First.second.split('.'); 1692 1693 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 1694 if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0) 1695 return BadVersion; 1696 GoodVersion.MajorStr = First.first.str(); 1697 if (First.second.empty()) 1698 return GoodVersion; 1699 StringRef MinorStr = Second.first; 1700 if (Second.second.empty()) { 1701 if (size_t EndNumber = MinorStr.find_first_not_of("0123456789")) { 1702 GoodVersion.PatchSuffix = MinorStr.substr(EndNumber); 1703 MinorStr = MinorStr.slice(0, EndNumber); 1704 } 1705 } 1706 if (MinorStr.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0) 1707 return BadVersion; 1708 GoodVersion.MinorStr = MinorStr.str(); 1709 1710 // First look for a number prefix and parse that if present. Otherwise just 1711 // stash the entire patch string in the suffix, and leave the number 1712 // unspecified. This covers versions strings such as: 1713 // 5 (handled above) 1714 // 4.4 1715 // 4.4-patched 1716 // 4.4.0 1717 // 4.4.x 1718 // 4.4.2-rc4 1719 // 4.4.x-patched 1720 // And retains any patch number it finds. 1721 StringRef PatchText = Second.second; 1722 if (!PatchText.empty()) { 1723 if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) { 1724 // Try to parse the number and any suffix. 1725 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) || 1726 GoodVersion.Patch < 0) 1727 return BadVersion; 1728 GoodVersion.PatchSuffix = PatchText.substr(EndNumber); 1729 } 1730 } 1731 1732 return GoodVersion; 1733 } 1734 1735 static llvm::StringRef getGCCToolchainDir(const ArgList &Args, 1736 llvm::StringRef SysRoot) { 1737 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain); 1738 if (A) 1739 return A->getValue(); 1740 1741 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX. 1742 // GCC_INSTALL_PREFIX specifies the gcc installation for the default 1743 // sysroot and is likely not valid with a different sysroot. 1744 if (!SysRoot.empty()) 1745 return ""; 1746 1747 return GCC_INSTALL_PREFIX; 1748 } 1749 1750 /// Initialize a GCCInstallationDetector from the driver. 1751 /// 1752 /// This performs all of the autodetection and sets up the various paths. 1753 /// Once constructed, a GCCInstallationDetector is essentially immutable. 1754 /// 1755 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and 1756 /// should instead pull the target out of the driver. This is currently 1757 /// necessary because the driver doesn't store the final version of the target 1758 /// triple. 1759 void Generic_GCC::GCCInstallationDetector::init( 1760 const llvm::Triple &TargetTriple, const ArgList &Args, 1761 ArrayRef<std::string> ExtraTripleAliases) { 1762 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit() 1763 ? TargetTriple.get64BitArchVariant() 1764 : TargetTriple.get32BitArchVariant(); 1765 // The library directories which may contain GCC installations. 1766 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs; 1767 // The compatible GCC triples for this particular architecture. 1768 SmallVector<StringRef, 16> CandidateTripleAliases; 1769 SmallVector<StringRef, 16> CandidateBiarchTripleAliases; 1770 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs, 1771 CandidateTripleAliases, CandidateBiarchLibDirs, 1772 CandidateBiarchTripleAliases); 1773 1774 // Compute the set of prefixes for our search. 1775 SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(), 1776 D.PrefixDirs.end()); 1777 1778 StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot); 1779 if (GCCToolchainDir != "") { 1780 if (GCCToolchainDir.back() == '/') 1781 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the / 1782 1783 Prefixes.push_back(GCCToolchainDir); 1784 } else { 1785 // If we have a SysRoot, try that first. 1786 if (!D.SysRoot.empty()) { 1787 Prefixes.push_back(D.SysRoot); 1788 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 1789 } 1790 1791 // Then look for gcc installed alongside clang. 1792 Prefixes.push_back(D.InstalledDir + "/.."); 1793 1794 // Next, look for prefix(es) that correspond to distribution-supplied gcc 1795 // installations. 1796 if (D.SysRoot.empty()) { 1797 // Typically /usr. 1798 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 1799 } 1800 } 1801 1802 // Try to respect gcc-config on Gentoo. However, do that only 1803 // if --gcc-toolchain is not provided or equal to the Gentoo install 1804 // in /usr. This avoids accidentally enforcing the system GCC version 1805 // when using a custom toolchain. 1806 if (GCCToolchainDir == "" || GCCToolchainDir == D.SysRoot + "/usr") { 1807 SmallVector<StringRef, 16> GentooTestTriples; 1808 // Try to match an exact triple as target triple first. 1809 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for 1810 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu" 1811 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching 1812 // triple x86_64-gentoo-linux-gnu is present. 1813 GentooTestTriples.push_back(TargetTriple.str()); 1814 // Check rest of triples. 1815 GentooTestTriples.append(ExtraTripleAliases.begin(), 1816 ExtraTripleAliases.end()); 1817 GentooTestTriples.append(CandidateTripleAliases.begin(), 1818 CandidateTripleAliases.end()); 1819 if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples, 1820 CandidateBiarchTripleAliases)) 1821 return; 1822 } 1823 1824 // Loop over the various components which exist and select the best GCC 1825 // installation available. GCC installs are ranked by version number. 1826 Version = GCCVersion::Parse("0.0.0"); 1827 for (const std::string &Prefix : Prefixes) { 1828 if (!D.getVFS().exists(Prefix)) 1829 continue; 1830 for (StringRef Suffix : CandidateLibDirs) { 1831 const std::string LibDir = Prefix + Suffix.str(); 1832 if (!D.getVFS().exists(LibDir)) 1833 continue; 1834 // Try to match the exact target triple first. 1835 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, TargetTriple.str()); 1836 // Try rest of possible triples. 1837 for (StringRef Candidate : ExtraTripleAliases) // Try these first. 1838 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate); 1839 for (StringRef Candidate : CandidateTripleAliases) 1840 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate); 1841 } 1842 for (StringRef Suffix : CandidateBiarchLibDirs) { 1843 const std::string LibDir = Prefix + Suffix.str(); 1844 if (!D.getVFS().exists(LibDir)) 1845 continue; 1846 for (StringRef Candidate : CandidateBiarchTripleAliases) 1847 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, 1848 /*NeedsBiarchSuffix=*/ true); 1849 } 1850 } 1851 } 1852 1853 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const { 1854 for (const auto &InstallPath : CandidateGCCInstallPaths) 1855 OS << "Found candidate GCC installation: " << InstallPath << "\n"; 1856 1857 if (!GCCInstallPath.empty()) 1858 OS << "Selected GCC installation: " << GCCInstallPath << "\n"; 1859 1860 for (const auto &Multilib : Multilibs) 1861 OS << "Candidate multilib: " << Multilib << "\n"; 1862 1863 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault()) 1864 OS << "Selected multilib: " << SelectedMultilib << "\n"; 1865 } 1866 1867 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const { 1868 if (BiarchSibling.hasValue()) { 1869 M = BiarchSibling.getValue(); 1870 return true; 1871 } 1872 return false; 1873 } 1874 1875 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes( 1876 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes, 1877 StringRef SysRoot) { 1878 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 1879 // Solaris is a special case. 1880 // The GCC installation is under 1881 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/ 1882 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with 1883 // /usr/gcc/<version> as a prefix. 1884 1885 std::string PrefixDir = SysRoot.str() + "/usr/gcc"; 1886 std::error_code EC; 1887 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC), 1888 LE; 1889 !EC && LI != LE; LI = LI.increment(EC)) { 1890 StringRef VersionText = llvm::sys::path::filename(LI->path()); 1891 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 1892 1893 // Filter out obviously bad entries. 1894 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1)) 1895 continue; 1896 1897 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str(); 1898 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc"; 1899 if (!D.getVFS().exists(CandidateLibPath)) 1900 continue; 1901 1902 Prefixes.push_back(CandidatePrefix); 1903 } 1904 return; 1905 } 1906 1907 // Non-Solaris is much simpler - most systems just go with "/usr". 1908 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux) { 1909 // Yet, still look for RHEL devtoolsets. 1910 Prefixes.push_back("/opt/rh/devtoolset-8/root/usr"); 1911 Prefixes.push_back("/opt/rh/devtoolset-7/root/usr"); 1912 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr"); 1913 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr"); 1914 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr"); 1915 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr"); 1916 } 1917 Prefixes.push_back(SysRoot.str() + "/usr"); 1918 } 1919 1920 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples( 1921 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple, 1922 SmallVectorImpl<StringRef> &LibDirs, 1923 SmallVectorImpl<StringRef> &TripleAliases, 1924 SmallVectorImpl<StringRef> &BiarchLibDirs, 1925 SmallVectorImpl<StringRef> &BiarchTripleAliases) { 1926 // Declare a bunch of static data sets that we'll select between below. These 1927 // are specifically designed to always refer to string literals to avoid any 1928 // lifetime or initialization issues. 1929 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"}; 1930 static const char *const AArch64Triples[] = { 1931 "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-redhat-linux", 1932 "aarch64-suse-linux", "aarch64-linux-android"}; 1933 static const char *const AArch64beLibDirs[] = {"/lib"}; 1934 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu", 1935 "aarch64_be-linux-gnu"}; 1936 1937 static const char *const ARMLibDirs[] = {"/lib"}; 1938 static const char *const ARMTriples[] = {"arm-linux-gnueabi", 1939 "arm-linux-androideabi"}; 1940 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf", 1941 "armv7hl-redhat-linux-gnueabi", 1942 "armv6hl-suse-linux-gnueabi", 1943 "armv7hl-suse-linux-gnueabi"}; 1944 static const char *const ARMebLibDirs[] = {"/lib"}; 1945 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi", 1946 "armeb-linux-androideabi"}; 1947 static const char *const ARMebHFTriples[] = { 1948 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"}; 1949 1950 static const char *const AVRLibDirs[] = {"/lib"}; 1951 static const char *const AVRTriples[] = {"avr"}; 1952 1953 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"}; 1954 static const char *const X86_64Triples[] = { 1955 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu", 1956 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E", 1957 "x86_64-redhat-linux", "x86_64-suse-linux", 1958 "x86_64-manbo-linux-gnu", "x86_64-linux-gnu", 1959 "x86_64-slackware-linux", "x86_64-unknown-linux", 1960 "x86_64-amazon-linux", "x86_64-linux-android"}; 1961 static const char *const X32LibDirs[] = {"/libx32"}; 1962 static const char *const X86LibDirs[] = {"/lib32", "/lib"}; 1963 static const char *const X86Triples[] = { 1964 "i686-linux-gnu", "i686-pc-linux-gnu", "i486-linux-gnu", 1965 "i386-linux-gnu", "i386-redhat-linux6E", "i686-redhat-linux", 1966 "i586-redhat-linux", "i386-redhat-linux", "i586-suse-linux", 1967 "i486-slackware-linux", "i686-montavista-linux", "i586-linux-gnu", 1968 "i686-linux-android", "i386-gnu", "i486-gnu", 1969 "i586-gnu", "i686-gnu"}; 1970 1971 static const char *const MIPSLibDirs[] = {"/lib"}; 1972 static const char *const MIPSTriples[] = { 1973 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu", 1974 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"}; 1975 static const char *const MIPSELLibDirs[] = {"/lib"}; 1976 static const char *const MIPSELTriples[] = { 1977 "mipsel-linux-gnu", "mips-img-linux-gnu", "mipsisa32r6el-linux-gnu", 1978 "mipsel-linux-android"}; 1979 1980 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"}; 1981 static const char *const MIPS64Triples[] = { 1982 "mips64-linux-gnu", "mips-mti-linux-gnu", 1983 "mips-img-linux-gnu", "mips64-linux-gnuabi64", 1984 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"}; 1985 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"}; 1986 static const char *const MIPS64ELTriples[] = { 1987 "mips64el-linux-gnu", "mips-mti-linux-gnu", 1988 "mips-img-linux-gnu", "mips64el-linux-gnuabi64", 1989 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64", 1990 "mips64el-linux-android"}; 1991 1992 static const char *const MIPSN32LibDirs[] = {"/lib32"}; 1993 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32", 1994 "mipsisa64r6-linux-gnuabin32"}; 1995 static const char *const MIPSN32ELLibDirs[] = {"/lib32"}; 1996 static const char *const MIPSN32ELTriples[] = { 1997 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"}; 1998 1999 static const char *const MSP430LibDirs[] = {"/lib"}; 2000 static const char *const MSP430Triples[] = {"msp430-elf"}; 2001 2002 static const char *const PPCLibDirs[] = {"/lib32", "/lib"}; 2003 static const char *const PPCTriples[] = { 2004 "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe", 2005 "powerpc-suse-linux", "powerpc-montavista-linuxspe"}; 2006 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"}; 2007 static const char *const PPC64Triples[] = { 2008 "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu", 2009 "powerpc64-suse-linux", "ppc64-redhat-linux"}; 2010 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"}; 2011 static const char *const PPC64LETriples[] = { 2012 "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu", 2013 "powerpc64le-suse-linux", "ppc64le-redhat-linux"}; 2014 2015 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"}; 2016 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu", 2017 "riscv32-linux-gnu", 2018 "riscv32-unknown-elf"}; 2019 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"}; 2020 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu", 2021 "riscv64-linux-gnu", 2022 "riscv64-unknown-elf"}; 2023 2024 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"}; 2025 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu", 2026 "sparcv8-linux-gnu"}; 2027 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"}; 2028 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu", 2029 "sparcv9-linux-gnu"}; 2030 2031 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"}; 2032 static const char *const SystemZTriples[] = { 2033 "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu", 2034 "s390x-suse-linux", "s390x-redhat-linux"}; 2035 2036 2037 using std::begin; 2038 using std::end; 2039 2040 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 2041 static const char *const SolarisLibDirs[] = {"/lib"}; 2042 static const char *const SolarisSparcV8Triples[] = { 2043 "sparc-sun-solaris2.11", "sparc-sun-solaris2.12"}; 2044 static const char *const SolarisSparcV9Triples[] = { 2045 "sparcv9-sun-solaris2.11", "sparcv9-sun-solaris2.12"}; 2046 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11", 2047 "i386-pc-solaris2.12"}; 2048 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11", 2049 "x86_64-pc-solaris2.12"}; 2050 LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 2051 BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 2052 switch (TargetTriple.getArch()) { 2053 case llvm::Triple::x86: 2054 TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples)); 2055 BiarchTripleAliases.append(begin(SolarisX86_64Triples), 2056 end(SolarisX86_64Triples)); 2057 break; 2058 case llvm::Triple::x86_64: 2059 TripleAliases.append(begin(SolarisX86_64Triples), 2060 end(SolarisX86_64Triples)); 2061 BiarchTripleAliases.append(begin(SolarisX86Triples), 2062 end(SolarisX86Triples)); 2063 break; 2064 case llvm::Triple::sparc: 2065 TripleAliases.append(begin(SolarisSparcV8Triples), 2066 end(SolarisSparcV8Triples)); 2067 BiarchTripleAliases.append(begin(SolarisSparcV9Triples), 2068 end(SolarisSparcV9Triples)); 2069 break; 2070 case llvm::Triple::sparcv9: 2071 TripleAliases.append(begin(SolarisSparcV9Triples), 2072 end(SolarisSparcV9Triples)); 2073 BiarchTripleAliases.append(begin(SolarisSparcV8Triples), 2074 end(SolarisSparcV8Triples)); 2075 break; 2076 default: 2077 break; 2078 } 2079 return; 2080 } 2081 2082 // Android targets should not use GNU/Linux tools or libraries. 2083 if (TargetTriple.isAndroid()) { 2084 static const char *const AArch64AndroidTriples[] = { 2085 "aarch64-linux-android"}; 2086 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"}; 2087 static const char *const MIPSELAndroidTriples[] = {"mipsel-linux-android"}; 2088 static const char *const MIPS64ELAndroidTriples[] = { 2089 "mips64el-linux-android"}; 2090 static const char *const X86AndroidTriples[] = {"i686-linux-android"}; 2091 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"}; 2092 2093 switch (TargetTriple.getArch()) { 2094 case llvm::Triple::aarch64: 2095 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2096 TripleAliases.append(begin(AArch64AndroidTriples), 2097 end(AArch64AndroidTriples)); 2098 break; 2099 case llvm::Triple::arm: 2100 case llvm::Triple::thumb: 2101 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2102 TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples)); 2103 break; 2104 case llvm::Triple::mipsel: 2105 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2106 TripleAliases.append(begin(MIPSELAndroidTriples), 2107 end(MIPSELAndroidTriples)); 2108 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2109 BiarchTripleAliases.append(begin(MIPS64ELAndroidTriples), 2110 end(MIPS64ELAndroidTriples)); 2111 break; 2112 case llvm::Triple::mips64el: 2113 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2114 TripleAliases.append(begin(MIPS64ELAndroidTriples), 2115 end(MIPS64ELAndroidTriples)); 2116 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2117 BiarchTripleAliases.append(begin(MIPSELAndroidTriples), 2118 end(MIPSELAndroidTriples)); 2119 break; 2120 case llvm::Triple::x86_64: 2121 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2122 TripleAliases.append(begin(X86_64AndroidTriples), 2123 end(X86_64AndroidTriples)); 2124 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2125 BiarchTripleAliases.append(begin(X86AndroidTriples), 2126 end(X86AndroidTriples)); 2127 break; 2128 case llvm::Triple::x86: 2129 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2130 TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples)); 2131 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2132 BiarchTripleAliases.append(begin(X86_64AndroidTriples), 2133 end(X86_64AndroidTriples)); 2134 break; 2135 default: 2136 break; 2137 } 2138 2139 return; 2140 } 2141 2142 switch (TargetTriple.getArch()) { 2143 case llvm::Triple::aarch64: 2144 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2145 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2146 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2147 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2148 break; 2149 case llvm::Triple::aarch64_be: 2150 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2151 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2152 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2153 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2154 break; 2155 case llvm::Triple::arm: 2156 case llvm::Triple::thumb: 2157 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2158 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2159 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples)); 2160 } else { 2161 TripleAliases.append(begin(ARMTriples), end(ARMTriples)); 2162 } 2163 break; 2164 case llvm::Triple::armeb: 2165 case llvm::Triple::thumbeb: 2166 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs)); 2167 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2168 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples)); 2169 } else { 2170 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples)); 2171 } 2172 break; 2173 case llvm::Triple::avr: 2174 LibDirs.append(begin(AVRLibDirs), end(AVRLibDirs)); 2175 TripleAliases.append(begin(AVRTriples), end(AVRTriples)); 2176 break; 2177 case llvm::Triple::x86_64: 2178 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2179 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2180 // x32 is always available when x86_64 is available, so adding it as 2181 // secondary arch with x86_64 triples 2182 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32) { 2183 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2184 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2185 } else { 2186 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2187 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples)); 2188 } 2189 break; 2190 case llvm::Triple::x86: 2191 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2192 // MCU toolchain is 32 bit only and its triple alias is TargetTriple 2193 // itself, which will be appended below. 2194 if (!TargetTriple.isOSIAMCU()) { 2195 TripleAliases.append(begin(X86Triples), end(X86Triples)); 2196 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2197 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2198 } 2199 break; 2200 case llvm::Triple::mips: 2201 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2202 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2203 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2204 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2205 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs)); 2206 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples)); 2207 break; 2208 case llvm::Triple::mipsel: 2209 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2210 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2211 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2212 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2213 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2214 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs)); 2215 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples)); 2216 break; 2217 case llvm::Triple::mips64: 2218 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2219 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2220 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2221 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2222 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs)); 2223 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples)); 2224 break; 2225 case llvm::Triple::mips64el: 2226 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2227 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2228 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2229 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2230 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs)); 2231 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples)); 2232 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2233 break; 2234 case llvm::Triple::msp430: 2235 LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs)); 2236 TripleAliases.append(begin(MSP430Triples), end(MSP430Triples)); 2237 break; 2238 case llvm::Triple::ppc: 2239 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2240 TripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2241 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2242 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2243 break; 2244 case llvm::Triple::ppc64: 2245 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2246 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2247 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2248 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2249 break; 2250 case llvm::Triple::ppc64le: 2251 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs)); 2252 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples)); 2253 break; 2254 case llvm::Triple::riscv32: 2255 LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2256 TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples)); 2257 BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs)); 2258 BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples)); 2259 break; 2260 case llvm::Triple::riscv64: 2261 LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs)); 2262 TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples)); 2263 BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2264 BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples)); 2265 break; 2266 case llvm::Triple::sparc: 2267 case llvm::Triple::sparcel: 2268 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2269 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2270 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2271 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2272 break; 2273 case llvm::Triple::sparcv9: 2274 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2275 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2276 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2277 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2278 break; 2279 case llvm::Triple::systemz: 2280 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs)); 2281 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples)); 2282 break; 2283 default: 2284 // By default, just rely on the standard lib directories and the original 2285 // triple. 2286 break; 2287 } 2288 2289 // Always append the drivers target triple to the end, in case it doesn't 2290 // match any of our aliases. 2291 TripleAliases.push_back(TargetTriple.str()); 2292 2293 // Also include the multiarch variant if it's different. 2294 if (TargetTriple.str() != BiarchTriple.str()) 2295 BiarchTripleAliases.push_back(BiarchTriple.str()); 2296 } 2297 2298 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs( 2299 const llvm::Triple &TargetTriple, const ArgList &Args, 2300 StringRef Path, bool NeedsBiarchSuffix) { 2301 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 2302 DetectedMultilibs Detected; 2303 2304 // Android standalone toolchain could have multilibs for ARM and Thumb. 2305 // Debian mips multilibs behave more like the rest of the biarch ones, 2306 // so handle them there 2307 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) { 2308 // It should also work without multilibs in a simplified toolchain. 2309 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected); 2310 } else if (TargetTriple.isMIPS()) { 2311 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected)) 2312 return false; 2313 } else if (TargetTriple.isRISCV()) { 2314 findRISCVMultilibs(D, TargetTriple, Path, Args, Detected); 2315 } else if (isMSP430(TargetArch)) { 2316 findMSP430Multilibs(D, TargetTriple, Path, Args, Detected); 2317 } else if (TargetArch == llvm::Triple::avr) { 2318 // AVR has no multilibs. 2319 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args, 2320 NeedsBiarchSuffix, Detected)) { 2321 return false; 2322 } 2323 2324 Multilibs = Detected.Multilibs; 2325 SelectedMultilib = Detected.SelectedMultilib; 2326 BiarchSibling = Detected.BiarchSibling; 2327 2328 return true; 2329 } 2330 2331 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple( 2332 const llvm::Triple &TargetTriple, const ArgList &Args, 2333 const std::string &LibDir, StringRef CandidateTriple, 2334 bool NeedsBiarchSuffix) { 2335 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 2336 // Locations relative to the system lib directory where GCC's triple-specific 2337 // directories might reside. 2338 struct GCCLibSuffix { 2339 // Path from system lib directory to GCC triple-specific directory. 2340 std::string LibSuffix; 2341 // Path from GCC triple-specific directory back to system lib directory. 2342 // This is one '..' component per component in LibSuffix. 2343 StringRef ReversePath; 2344 // Whether this library suffix is relevant for the triple. 2345 bool Active; 2346 } Suffixes[] = { 2347 // This is the normal place. 2348 {"gcc/" + CandidateTriple.str(), "../..", true}, 2349 2350 // Debian puts cross-compilers in gcc-cross. 2351 {"gcc-cross/" + CandidateTriple.str(), "../..", 2352 TargetTriple.getOS() != llvm::Triple::Solaris}, 2353 2354 // The Freescale PPC SDK has the gcc libraries in 2355 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do 2356 // this on Freescale triples, though, since some systems put a *lot* of 2357 // files in that location, not just GCC installation data. 2358 {CandidateTriple.str(), "..", 2359 TargetTriple.getVendor() == llvm::Triple::Freescale || 2360 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}, 2361 2362 // Natively multiarch systems sometimes put the GCC triple-specific 2363 // directory within their multiarch lib directory, resulting in the 2364 // triple appearing twice. 2365 {CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), "../../..", 2366 TargetTriple.getOS() != llvm::Triple::Solaris}, 2367 2368 // Deal with cases (on Ubuntu) where the system architecture could be i386 2369 // but the GCC target architecture could be (say) i686. 2370 // FIXME: It may be worthwhile to generalize this and look for a second 2371 // triple. 2372 {"i386-linux-gnu/gcc/" + CandidateTriple.str(), "../../..", 2373 (TargetArch == llvm::Triple::x86 && 2374 TargetTriple.getOS() != llvm::Triple::Solaris)}, 2375 {"i386-gnu/gcc/" + CandidateTriple.str(), "../../..", 2376 (TargetArch == llvm::Triple::x86 && 2377 TargetTriple.getOS() != llvm::Triple::Solaris)}}; 2378 2379 for (auto &Suffix : Suffixes) { 2380 if (!Suffix.Active) 2381 continue; 2382 2383 StringRef LibSuffix = Suffix.LibSuffix; 2384 std::error_code EC; 2385 for (llvm::vfs::directory_iterator 2386 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC), 2387 LE; 2388 !EC && LI != LE; LI = LI.increment(EC)) { 2389 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2390 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 2391 if (CandidateVersion.Major != -1) // Filter obviously bad entries. 2392 if (!CandidateGCCInstallPaths.insert(LI->path()).second) 2393 continue; // Saw this path before; no need to look at it again. 2394 if (CandidateVersion.isOlderThan(4, 1, 1)) 2395 continue; 2396 if (CandidateVersion <= Version) 2397 continue; 2398 2399 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(), 2400 NeedsBiarchSuffix)) 2401 continue; 2402 2403 Version = CandidateVersion; 2404 GCCTriple.setTriple(CandidateTriple); 2405 // FIXME: We hack together the directory name here instead of 2406 // using LI to ensure stable path separators across Windows and 2407 // Linux. 2408 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str(); 2409 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str(); 2410 IsValid = true; 2411 } 2412 } 2413 } 2414 2415 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs( 2416 const llvm::Triple &TargetTriple, const ArgList &Args, 2417 const SmallVectorImpl<StringRef> &CandidateTriples, 2418 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) { 2419 for (StringRef CandidateTriple : CandidateTriples) { 2420 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple)) 2421 return true; 2422 } 2423 2424 for (StringRef CandidateTriple : CandidateBiarchTriples) { 2425 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true)) 2426 return true; 2427 } 2428 return false; 2429 } 2430 2431 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig( 2432 const llvm::Triple &TargetTriple, const ArgList &Args, 2433 StringRef CandidateTriple, bool NeedsBiarchSuffix) { 2434 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File = 2435 D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/config-" + 2436 CandidateTriple.str()); 2437 if (File) { 2438 SmallVector<StringRef, 2> Lines; 2439 File.get()->getBuffer().split(Lines, "\n"); 2440 for (StringRef Line : Lines) { 2441 Line = Line.trim(); 2442 // CURRENT=triple-version 2443 if (!Line.consume_front("CURRENT=")) 2444 continue; 2445 // Process the config file pointed to by CURRENT. 2446 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile = 2447 D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/" + 2448 Line.str()); 2449 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-'); 2450 // List of paths to scan for libraries. 2451 SmallVector<StringRef, 4> GentooScanPaths; 2452 // Scan the Config file to find installed GCC libraries path. 2453 // Typical content of the GCC config file: 2454 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/ 2455 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32" 2456 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man" 2457 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info" 2458 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4" 2459 // We are looking for the paths listed in LDPATH=... . 2460 if (ConfigFile) { 2461 SmallVector<StringRef, 2> ConfigLines; 2462 ConfigFile.get()->getBuffer().split(ConfigLines, "\n"); 2463 for (StringRef ConfLine : ConfigLines) { 2464 ConfLine = ConfLine.trim(); 2465 if (ConfLine.consume_front("LDPATH=")) { 2466 // Drop '"' from front and back if present. 2467 ConfLine.consume_back("\""); 2468 ConfLine.consume_front("\""); 2469 // Get all paths sperated by ':' 2470 ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false); 2471 } 2472 } 2473 } 2474 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}. 2475 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/" 2476 + ActiveVersion.second.str(); 2477 GentooScanPaths.push_back(StringRef(basePath)); 2478 2479 // Scan all paths for GCC libraries. 2480 for (const auto &GentooScanPath : GentooScanPaths) { 2481 std::string GentooPath = D.SysRoot + std::string(GentooScanPath); 2482 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) { 2483 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath, 2484 NeedsBiarchSuffix)) 2485 continue; 2486 2487 Version = GCCVersion::Parse(ActiveVersion.second); 2488 GCCInstallPath = GentooPath; 2489 GCCParentLibPath = GentooPath + std::string("/../../.."); 2490 GCCTriple.setTriple(ActiveVersion.first); 2491 IsValid = true; 2492 return true; 2493 } 2494 } 2495 } 2496 } 2497 2498 return false; 2499 } 2500 2501 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple, 2502 const ArgList &Args) 2503 : ToolChain(D, Triple, Args), GCCInstallation(D), 2504 CudaInstallation(D, Triple, Args) { 2505 getProgramPaths().push_back(getDriver().getInstalledDir()); 2506 if (getDriver().getInstalledDir() != getDriver().Dir) 2507 getProgramPaths().push_back(getDriver().Dir); 2508 } 2509 2510 Generic_GCC::~Generic_GCC() {} 2511 2512 Tool *Generic_GCC::getTool(Action::ActionClass AC) const { 2513 switch (AC) { 2514 case Action::PreprocessJobClass: 2515 if (!Preprocess) 2516 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this)); 2517 return Preprocess.get(); 2518 case Action::CompileJobClass: 2519 if (!Compile) 2520 Compile.reset(new tools::gcc::Compiler(*this)); 2521 return Compile.get(); 2522 default: 2523 return ToolChain::getTool(AC); 2524 } 2525 } 2526 2527 Tool *Generic_GCC::buildAssembler() const { 2528 return new tools::gnutools::Assembler(*this); 2529 } 2530 2531 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); } 2532 2533 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const { 2534 // Print the information about how we detected the GCC installation. 2535 GCCInstallation.print(OS); 2536 CudaInstallation.print(OS); 2537 } 2538 2539 bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const { 2540 return getArch() == llvm::Triple::x86_64; 2541 } 2542 2543 bool Generic_GCC::isPICDefault() const { 2544 switch (getArch()) { 2545 case llvm::Triple::x86_64: 2546 return getTriple().isOSWindows(); 2547 case llvm::Triple::ppc64: 2548 // Big endian PPC is PIC by default 2549 return !getTriple().isOSBinFormatMachO() && !getTriple().isMacOSX(); 2550 case llvm::Triple::mips64: 2551 case llvm::Triple::mips64el: 2552 return true; 2553 default: 2554 return false; 2555 } 2556 } 2557 2558 bool Generic_GCC::isPIEDefault() const { return false; } 2559 2560 bool Generic_GCC::isPICDefaultForced() const { 2561 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows(); 2562 } 2563 2564 bool Generic_GCC::IsIntegratedAssemblerDefault() const { 2565 switch (getTriple().getArch()) { 2566 case llvm::Triple::x86: 2567 case llvm::Triple::x86_64: 2568 case llvm::Triple::aarch64: 2569 case llvm::Triple::aarch64_be: 2570 case llvm::Triple::arm: 2571 case llvm::Triple::armeb: 2572 case llvm::Triple::avr: 2573 case llvm::Triple::bpfel: 2574 case llvm::Triple::bpfeb: 2575 case llvm::Triple::thumb: 2576 case llvm::Triple::thumbeb: 2577 case llvm::Triple::ppc: 2578 case llvm::Triple::ppc64: 2579 case llvm::Triple::ppc64le: 2580 case llvm::Triple::riscv32: 2581 case llvm::Triple::riscv64: 2582 case llvm::Triple::systemz: 2583 case llvm::Triple::mips: 2584 case llvm::Triple::mipsel: 2585 case llvm::Triple::mips64: 2586 case llvm::Triple::mips64el: 2587 case llvm::Triple::msp430: 2588 return true; 2589 case llvm::Triple::sparc: 2590 case llvm::Triple::sparcel: 2591 case llvm::Triple::sparcv9: 2592 if (getTriple().isOSFreeBSD() || getTriple().isOSOpenBSD() || 2593 getTriple().isOSSolaris()) 2594 return true; 2595 return false; 2596 default: 2597 return false; 2598 } 2599 } 2600 2601 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 2602 ArgStringList &CC1Args) const { 2603 if (DriverArgs.hasArg(options::OPT_nostdlibinc) || 2604 DriverArgs.hasArg(options::OPT_nostdincxx)) 2605 return; 2606 2607 switch (GetCXXStdlibType(DriverArgs)) { 2608 case ToolChain::CST_Libcxx: 2609 addLibCxxIncludePaths(DriverArgs, CC1Args); 2610 break; 2611 2612 case ToolChain::CST_Libstdcxx: 2613 addLibStdCxxIncludePaths(DriverArgs, CC1Args); 2614 break; 2615 } 2616 } 2617 2618 void 2619 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 2620 llvm::opt::ArgStringList &CC1Args) const { 2621 // FIXME: The Linux behavior would probaby be a better approach here. 2622 addSystemInclude(DriverArgs, CC1Args, 2623 getDriver().SysRoot + "/usr/include/c++/v1"); 2624 } 2625 2626 void 2627 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 2628 llvm::opt::ArgStringList &CC1Args) const { 2629 // By default, we don't assume we know where libstdc++ might be installed. 2630 // FIXME: If we have a valid GCCInstallation, use it. 2631 } 2632 2633 /// Helper to add the variant paths of a libstdc++ installation. 2634 bool Generic_GCC::addLibStdCXXIncludePaths( 2635 Twine Base, Twine Suffix, StringRef GCCTriple, StringRef GCCMultiarchTriple, 2636 StringRef TargetMultiarchTriple, Twine IncludeSuffix, 2637 const ArgList &DriverArgs, ArgStringList &CC1Args) const { 2638 if (!getVFS().exists(Base + Suffix)) 2639 return false; 2640 2641 addSystemInclude(DriverArgs, CC1Args, Base + Suffix); 2642 2643 // The vanilla GCC layout of libstdc++ headers uses a triple subdirectory. If 2644 // that path exists or we have neither a GCC nor target multiarch triple, use 2645 // this vanilla search path. 2646 if ((GCCMultiarchTriple.empty() && TargetMultiarchTriple.empty()) || 2647 getVFS().exists(Base + Suffix + "/" + GCCTriple + IncludeSuffix)) { 2648 addSystemInclude(DriverArgs, CC1Args, 2649 Base + Suffix + "/" + GCCTriple + IncludeSuffix); 2650 } else { 2651 // Otherwise try to use multiarch naming schemes which have normalized the 2652 // triples and put the triple before the suffix. 2653 // 2654 // GCC surprisingly uses *both* the GCC triple with a multilib suffix and 2655 // the target triple, so we support that here. 2656 addSystemInclude(DriverArgs, CC1Args, 2657 Base + "/" + GCCMultiarchTriple + Suffix + IncludeSuffix); 2658 addSystemInclude(DriverArgs, CC1Args, 2659 Base + "/" + TargetMultiarchTriple + Suffix); 2660 } 2661 2662 addSystemInclude(DriverArgs, CC1Args, Base + Suffix + "/backward"); 2663 return true; 2664 } 2665 2666 llvm::opt::DerivedArgList * 2667 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef, 2668 Action::OffloadKind DeviceOffloadKind) const { 2669 2670 // If this tool chain is used for an OpenMP offloading device we have to make 2671 // sure we always generate a shared library regardless of the commands the 2672 // user passed to the host. This is required because the runtime library 2673 // is required to load the device image dynamically at run time. 2674 if (DeviceOffloadKind == Action::OFK_OpenMP) { 2675 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs()); 2676 const OptTable &Opts = getDriver().getOpts(); 2677 2678 // Request the shared library. Given that these options are decided 2679 // implicitly, they do not refer to any base argument. 2680 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared)); 2681 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC)); 2682 2683 // Filter all the arguments we don't care passing to the offloading 2684 // toolchain as they can mess up with the creation of a shared library. 2685 for (auto *A : Args) { 2686 switch ((options::ID)A->getOption().getID()) { 2687 default: 2688 DAL->append(A); 2689 break; 2690 case options::OPT_shared: 2691 case options::OPT_dynamic: 2692 case options::OPT_static: 2693 case options::OPT_fPIC: 2694 case options::OPT_fno_PIC: 2695 case options::OPT_fpic: 2696 case options::OPT_fno_pic: 2697 case options::OPT_fPIE: 2698 case options::OPT_fno_PIE: 2699 case options::OPT_fpie: 2700 case options::OPT_fno_pie: 2701 break; 2702 } 2703 } 2704 return DAL; 2705 } 2706 return nullptr; 2707 } 2708 2709 void Generic_ELF::anchor() {} 2710 2711 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs, 2712 ArgStringList &CC1Args, 2713 Action::OffloadKind) const { 2714 const Generic_GCC::GCCVersion &V = GCCInstallation.getVersion(); 2715 bool UseInitArrayDefault = 2716 getTriple().getArch() == llvm::Triple::aarch64 || 2717 getTriple().getArch() == llvm::Triple::aarch64_be || 2718 (getTriple().isOSFreeBSD() && 2719 getTriple().getOSMajorVersion() >= 12) || 2720 (getTriple().getOS() == llvm::Triple::Linux && 2721 ((!GCCInstallation.isValid() || !V.isOlderThan(4, 7, 0)) || 2722 getTriple().isAndroid())) || 2723 getTriple().getOS() == llvm::Triple::NaCl || 2724 (getTriple().getVendor() == llvm::Triple::MipsTechnologies && 2725 !getTriple().hasEnvironment()) || 2726 getTriple().getOS() == llvm::Triple::Solaris || 2727 getTriple().getArch() == llvm::Triple::riscv32 || 2728 getTriple().getArch() == llvm::Triple::riscv64; 2729 2730 if (DriverArgs.hasFlag(options::OPT_fuse_init_array, 2731 options::OPT_fno_use_init_array, UseInitArrayDefault)) 2732 CC1Args.push_back("-fuse-init-array"); 2733 } 2734