1 //===--- Gnu.cpp - Gnu Tool and ToolChain Implementations -------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "Gnu.h" 10 #include "Arch/ARM.h" 11 #include "Arch/Mips.h" 12 #include "Arch/PPC.h" 13 #include "Arch/RISCV.h" 14 #include "Arch/Sparc.h" 15 #include "Arch/SystemZ.h" 16 #include "CommonArgs.h" 17 #include "Linux.h" 18 #include "clang/Config/config.h" // for GCC_INSTALL_PREFIX 19 #include "clang/Driver/Compilation.h" 20 #include "clang/Driver/Driver.h" 21 #include "clang/Driver/DriverDiagnostic.h" 22 #include "clang/Driver/Options.h" 23 #include "clang/Driver/Tool.h" 24 #include "clang/Driver/ToolChain.h" 25 #include "llvm/Option/ArgList.h" 26 #include "llvm/Support/CodeGen.h" 27 #include "llvm/Support/Path.h" 28 #include "llvm/Support/TargetParser.h" 29 #include "llvm/Support/VirtualFileSystem.h" 30 #include <system_error> 31 32 using namespace clang::driver; 33 using namespace clang::driver::toolchains; 34 using namespace clang; 35 using namespace llvm::opt; 36 37 using tools::addMultilibFlag; 38 using tools::addPathIfExists; 39 40 static bool forwardToGCC(const Option &O) { 41 // LinkerInput options have been forwarded. Don't duplicate. 42 if (O.hasFlag(options::LinkerInput)) 43 return false; 44 return O.matches(options::OPT_Link_Group) || O.hasFlag(options::LinkOption); 45 } 46 47 // Switch CPU names not recognized by GNU assembler to a close CPU that it does 48 // recognize, instead of a lower march from being picked in the absence of a cpu 49 // flag. 50 static void normalizeCPUNamesForAssembler(const ArgList &Args, 51 ArgStringList &CmdArgs) { 52 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) { 53 StringRef CPUArg(A->getValue()); 54 if (CPUArg.equals_lower("krait")) 55 CmdArgs.push_back("-mcpu=cortex-a15"); 56 else if(CPUArg.equals_lower("kryo")) 57 CmdArgs.push_back("-mcpu=cortex-a57"); 58 else 59 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ); 60 } 61 } 62 63 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA, 64 const InputInfo &Output, 65 const InputInfoList &Inputs, 66 const ArgList &Args, 67 const char *LinkingOutput) const { 68 const Driver &D = getToolChain().getDriver(); 69 ArgStringList CmdArgs; 70 71 for (const auto &A : Args) { 72 if (forwardToGCC(A->getOption())) { 73 // It is unfortunate that we have to claim here, as this means 74 // we will basically never report anything interesting for 75 // platforms using a generic gcc, even if we are just using gcc 76 // to get to the assembler. 77 A->claim(); 78 79 A->render(Args, CmdArgs); 80 } 81 } 82 83 RenderExtraToolArgs(JA, CmdArgs); 84 85 // If using a driver driver, force the arch. 86 if (getToolChain().getTriple().isOSDarwin()) { 87 CmdArgs.push_back("-arch"); 88 CmdArgs.push_back( 89 Args.MakeArgString(getToolChain().getDefaultUniversalArchName())); 90 } 91 92 // Try to force gcc to match the tool chain we want, if we recognize 93 // the arch. 94 // 95 // FIXME: The triple class should directly provide the information we want 96 // here. 97 switch (getToolChain().getArch()) { 98 default: 99 break; 100 case llvm::Triple::x86: 101 case llvm::Triple::ppc: 102 case llvm::Triple::ppcle: 103 CmdArgs.push_back("-m32"); 104 break; 105 case llvm::Triple::x86_64: 106 case llvm::Triple::ppc64: 107 case llvm::Triple::ppc64le: 108 CmdArgs.push_back("-m64"); 109 break; 110 case llvm::Triple::sparcel: 111 CmdArgs.push_back("-EL"); 112 break; 113 } 114 115 if (Output.isFilename()) { 116 CmdArgs.push_back("-o"); 117 CmdArgs.push_back(Output.getFilename()); 118 } else { 119 assert(Output.isNothing() && "Unexpected output"); 120 CmdArgs.push_back("-fsyntax-only"); 121 } 122 123 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 124 125 // Only pass -x if gcc will understand it; otherwise hope gcc 126 // understands the suffix correctly. The main use case this would go 127 // wrong in is for linker inputs if they happened to have an odd 128 // suffix; really the only way to get this to happen is a command 129 // like '-x foobar a.c' which will treat a.c like a linker input. 130 // 131 // FIXME: For the linker case specifically, can we safely convert 132 // inputs into '-Wl,' options? 133 for (const auto &II : Inputs) { 134 // Don't try to pass LLVM or AST inputs to a generic gcc. 135 if (types::isLLVMIR(II.getType())) 136 D.Diag(clang::diag::err_drv_no_linker_llvm_support) 137 << getToolChain().getTripleString(); 138 else if (II.getType() == types::TY_AST) 139 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString(); 140 else if (II.getType() == types::TY_ModuleFile) 141 D.Diag(diag::err_drv_no_module_support) 142 << getToolChain().getTripleString(); 143 144 if (types::canTypeBeUserSpecified(II.getType())) { 145 CmdArgs.push_back("-x"); 146 CmdArgs.push_back(types::getTypeName(II.getType())); 147 } 148 149 if (II.isFilename()) 150 CmdArgs.push_back(II.getFilename()); 151 else { 152 const Arg &A = II.getInputArg(); 153 154 // Reverse translate some rewritten options. 155 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) { 156 CmdArgs.push_back("-lstdc++"); 157 continue; 158 } 159 160 // Don't render as input, we need gcc to do the translations. 161 A.render(Args, CmdArgs); 162 } 163 } 164 165 const std::string &customGCCName = D.getCCCGenericGCCName(); 166 const char *GCCName; 167 if (!customGCCName.empty()) 168 GCCName = customGCCName.c_str(); 169 else if (D.CCCIsCXX()) { 170 GCCName = "g++"; 171 } else 172 GCCName = "gcc"; 173 174 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName)); 175 C.addCommand(std::make_unique<Command>(JA, *this, 176 ResponseFileSupport::AtFileCurCP(), 177 Exec, CmdArgs, Inputs, Output)); 178 } 179 180 void tools::gcc::Preprocessor::RenderExtraToolArgs( 181 const JobAction &JA, ArgStringList &CmdArgs) const { 182 CmdArgs.push_back("-E"); 183 } 184 185 void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA, 186 ArgStringList &CmdArgs) const { 187 const Driver &D = getToolChain().getDriver(); 188 189 switch (JA.getType()) { 190 // If -flto, etc. are present then make sure not to force assembly output. 191 case types::TY_LLVM_IR: 192 case types::TY_LTO_IR: 193 case types::TY_LLVM_BC: 194 case types::TY_LTO_BC: 195 CmdArgs.push_back("-c"); 196 break; 197 // We assume we've got an "integrated" assembler in that gcc will produce an 198 // object file itself. 199 case types::TY_Object: 200 CmdArgs.push_back("-c"); 201 break; 202 case types::TY_PP_Asm: 203 CmdArgs.push_back("-S"); 204 break; 205 case types::TY_Nothing: 206 CmdArgs.push_back("-fsyntax-only"); 207 break; 208 default: 209 D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType()); 210 } 211 } 212 213 void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA, 214 ArgStringList &CmdArgs) const { 215 // The types are (hopefully) good enough. 216 } 217 218 // On Arm the endianness of the output file is determined by the target and 219 // can be overridden by the pseudo-target flags '-mlittle-endian'/'-EL' and 220 // '-mbig-endian'/'-EB'. Unlike other targets the flag does not result in a 221 // normalized triple so we must handle the flag here. 222 static bool isArmBigEndian(const llvm::Triple &Triple, 223 const ArgList &Args) { 224 bool IsBigEndian = false; 225 switch (Triple.getArch()) { 226 case llvm::Triple::armeb: 227 case llvm::Triple::thumbeb: 228 IsBigEndian = true; 229 LLVM_FALLTHROUGH; 230 case llvm::Triple::arm: 231 case llvm::Triple::thumb: 232 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian, 233 options::OPT_mbig_endian)) 234 IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian); 235 break; 236 default: 237 break; 238 } 239 return IsBigEndian; 240 } 241 242 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) { 243 switch (T.getArch()) { 244 case llvm::Triple::x86: 245 if (T.isOSIAMCU()) 246 return "elf_iamcu"; 247 return "elf_i386"; 248 case llvm::Triple::aarch64: 249 return "aarch64linux"; 250 case llvm::Triple::aarch64_be: 251 return "aarch64linuxb"; 252 case llvm::Triple::arm: 253 case llvm::Triple::thumb: 254 case llvm::Triple::armeb: 255 case llvm::Triple::thumbeb: 256 return isArmBigEndian(T, Args) ? "armelfb_linux_eabi" : "armelf_linux_eabi"; 257 case llvm::Triple::ppc: 258 if (T.isOSLinux()) 259 return "elf32ppclinux"; 260 return "elf32ppc"; 261 case llvm::Triple::ppcle: 262 if (T.isOSLinux()) 263 return "elf32lppclinux"; 264 return "elf32lppc"; 265 case llvm::Triple::ppc64: 266 return "elf64ppc"; 267 case llvm::Triple::ppc64le: 268 return "elf64lppc"; 269 case llvm::Triple::riscv32: 270 return "elf32lriscv"; 271 case llvm::Triple::riscv64: 272 return "elf64lriscv"; 273 case llvm::Triple::sparc: 274 case llvm::Triple::sparcel: 275 return "elf32_sparc"; 276 case llvm::Triple::sparcv9: 277 return "elf64_sparc"; 278 case llvm::Triple::mips: 279 return "elf32btsmip"; 280 case llvm::Triple::mipsel: 281 return "elf32ltsmip"; 282 case llvm::Triple::mips64: 283 if (tools::mips::hasMipsAbiArg(Args, "n32") || 284 T.getEnvironment() == llvm::Triple::GNUABIN32) 285 return "elf32btsmipn32"; 286 return "elf64btsmip"; 287 case llvm::Triple::mips64el: 288 if (tools::mips::hasMipsAbiArg(Args, "n32") || 289 T.getEnvironment() == llvm::Triple::GNUABIN32) 290 return "elf32ltsmipn32"; 291 return "elf64ltsmip"; 292 case llvm::Triple::systemz: 293 return "elf64_s390"; 294 case llvm::Triple::x86_64: 295 if (T.getEnvironment() == llvm::Triple::GNUX32) 296 return "elf32_x86_64"; 297 return "elf_x86_64"; 298 case llvm::Triple::ve: 299 return "elf64ve"; 300 default: 301 return nullptr; 302 } 303 } 304 305 static bool getPIE(const ArgList &Args, const ToolChain &TC) { 306 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_static) || 307 Args.hasArg(options::OPT_r) || Args.hasArg(options::OPT_static_pie)) 308 return false; 309 310 Arg *A = Args.getLastArg(options::OPT_pie, options::OPT_no_pie, 311 options::OPT_nopie); 312 if (!A) 313 return TC.isPIEDefault(); 314 return A->getOption().matches(options::OPT_pie); 315 } 316 317 static bool getStaticPIE(const ArgList &Args, const ToolChain &TC) { 318 bool HasStaticPIE = Args.hasArg(options::OPT_static_pie); 319 // -no-pie is an alias for -nopie. So, handling -nopie takes care of 320 // -no-pie as well. 321 if (HasStaticPIE && Args.hasArg(options::OPT_nopie)) { 322 const Driver &D = TC.getDriver(); 323 const llvm::opt::OptTable &Opts = D.getOpts(); 324 const char *StaticPIEName = Opts.getOptionName(options::OPT_static_pie); 325 const char *NoPIEName = Opts.getOptionName(options::OPT_nopie); 326 D.Diag(diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName; 327 } 328 return HasStaticPIE; 329 } 330 331 static bool getStatic(const ArgList &Args) { 332 return Args.hasArg(options::OPT_static) && 333 !Args.hasArg(options::OPT_static_pie); 334 } 335 336 void tools::gnutools::StaticLibTool::ConstructJob( 337 Compilation &C, const JobAction &JA, const InputInfo &Output, 338 const InputInfoList &Inputs, const ArgList &Args, 339 const char *LinkingOutput) const { 340 const Driver &D = getToolChain().getDriver(); 341 342 // Silence warning for "clang -g foo.o -o foo" 343 Args.ClaimAllArgs(options::OPT_g_Group); 344 // and "clang -emit-llvm foo.o -o foo" 345 Args.ClaimAllArgs(options::OPT_emit_llvm); 346 // and for "clang -w foo.o -o foo". Other warning options are already 347 // handled somewhere else. 348 Args.ClaimAllArgs(options::OPT_w); 349 // Silence warnings when linking C code with a C++ '-stdlib' argument. 350 Args.ClaimAllArgs(options::OPT_stdlib_EQ); 351 352 // ar tool command "llvm-ar <options> <output_file> <input_files>". 353 ArgStringList CmdArgs; 354 // Create and insert file members with a deterministic index. 355 CmdArgs.push_back("rcsD"); 356 CmdArgs.push_back(Output.getFilename()); 357 358 for (const auto &II : Inputs) { 359 if (II.isFilename()) { 360 CmdArgs.push_back(II.getFilename()); 361 } 362 } 363 364 // Delete old output archive file if it already exists before generating a new 365 // archive file. 366 auto OutputFileName = Output.getFilename(); 367 if (Output.isFilename() && llvm::sys::fs::exists(OutputFileName)) { 368 if (std::error_code EC = llvm::sys::fs::remove(OutputFileName)) { 369 D.Diag(diag::err_drv_unable_to_remove_file) << EC.message(); 370 return; 371 } 372 } 373 374 const char *Exec = Args.MakeArgString(getToolChain().GetStaticLibToolPath()); 375 C.addCommand(std::make_unique<Command>(JA, *this, 376 ResponseFileSupport::AtFileCurCP(), 377 Exec, CmdArgs, Inputs, Output)); 378 } 379 380 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA, 381 const InputInfo &Output, 382 const InputInfoList &Inputs, 383 const ArgList &Args, 384 const char *LinkingOutput) const { 385 // FIXME: The Linker class constructor takes a ToolChain and not a 386 // Generic_ELF, so the static_cast might return a reference to a invalid 387 // instance (see PR45061). Ideally, the Linker constructor needs to take a 388 // Generic_ELF instead. 389 const toolchains::Generic_ELF &ToolChain = 390 static_cast<const toolchains::Generic_ELF &>(getToolChain()); 391 const Driver &D = ToolChain.getDriver(); 392 393 const llvm::Triple &Triple = getToolChain().getEffectiveTriple(); 394 395 const llvm::Triple::ArchType Arch = ToolChain.getArch(); 396 const bool isAndroid = ToolChain.getTriple().isAndroid(); 397 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU(); 398 const bool IsVE = ToolChain.getTriple().isVE(); 399 const bool IsPIE = getPIE(Args, ToolChain); 400 const bool IsStaticPIE = getStaticPIE(Args, ToolChain); 401 const bool IsStatic = getStatic(Args); 402 const bool HasCRTBeginEndFiles = 403 ToolChain.getTriple().hasEnvironment() || 404 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies); 405 406 ArgStringList CmdArgs; 407 408 // Silence warning for "clang -g foo.o -o foo" 409 Args.ClaimAllArgs(options::OPT_g_Group); 410 // and "clang -emit-llvm foo.o -o foo" 411 Args.ClaimAllArgs(options::OPT_emit_llvm); 412 // and for "clang -w foo.o -o foo". Other warning options are already 413 // handled somewhere else. 414 Args.ClaimAllArgs(options::OPT_w); 415 416 if (!D.SysRoot.empty()) 417 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 418 419 if (IsPIE) 420 CmdArgs.push_back("-pie"); 421 422 if (IsStaticPIE) { 423 CmdArgs.push_back("-static"); 424 CmdArgs.push_back("-pie"); 425 CmdArgs.push_back("--no-dynamic-linker"); 426 CmdArgs.push_back("-z"); 427 CmdArgs.push_back("text"); 428 } 429 430 if (ToolChain.isNoExecStackDefault()) { 431 CmdArgs.push_back("-z"); 432 CmdArgs.push_back("noexecstack"); 433 } 434 435 if (Args.hasArg(options::OPT_rdynamic)) 436 CmdArgs.push_back("-export-dynamic"); 437 438 if (Args.hasArg(options::OPT_s)) 439 CmdArgs.push_back("-s"); 440 441 if (Triple.isARM() || Triple.isThumb() || Triple.isAArch64()) { 442 bool IsBigEndian = isArmBigEndian(Triple, Args); 443 if (IsBigEndian) 444 arm::appendBE8LinkFlag(Args, CmdArgs, Triple); 445 IsBigEndian = IsBigEndian || Arch == llvm::Triple::aarch64_be; 446 CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL"); 447 } 448 449 // Most Android ARM64 targets should enable the linker fix for erratum 450 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag. 451 if (Arch == llvm::Triple::aarch64 && isAndroid) { 452 std::string CPU = getCPUName(Args, Triple); 453 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53") 454 CmdArgs.push_back("--fix-cortex-a53-843419"); 455 } 456 457 // Android does not allow shared text relocations. Emit a warning if the 458 // user's code contains any. 459 if (isAndroid) 460 CmdArgs.push_back("--warn-shared-textrel"); 461 462 ToolChain.addExtraOpts(CmdArgs); 463 464 CmdArgs.push_back("--eh-frame-hdr"); 465 466 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) { 467 CmdArgs.push_back("-m"); 468 CmdArgs.push_back(LDMOption); 469 } else { 470 D.Diag(diag::err_target_unknown_triple) << Triple.str(); 471 return; 472 } 473 474 if (IsStatic) { 475 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb || 476 Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb) 477 CmdArgs.push_back("-Bstatic"); 478 else 479 CmdArgs.push_back("-static"); 480 } else if (Args.hasArg(options::OPT_shared)) { 481 CmdArgs.push_back("-shared"); 482 } 483 484 if (!IsStatic) { 485 if (Args.hasArg(options::OPT_rdynamic)) 486 CmdArgs.push_back("-export-dynamic"); 487 488 if (!Args.hasArg(options::OPT_shared) && !IsStaticPIE) { 489 CmdArgs.push_back("-dynamic-linker"); 490 CmdArgs.push_back(Args.MakeArgString(Twine(D.DyldPrefix) + 491 ToolChain.getDynamicLinker(Args))); 492 } 493 } 494 495 CmdArgs.push_back("-o"); 496 CmdArgs.push_back(Output.getFilename()); 497 498 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) { 499 if (!isAndroid && !IsIAMCU) { 500 const char *crt1 = nullptr; 501 if (!Args.hasArg(options::OPT_shared)) { 502 if (Args.hasArg(options::OPT_pg)) 503 crt1 = "gcrt1.o"; 504 else if (IsPIE) 505 crt1 = "Scrt1.o"; 506 else if (IsStaticPIE) 507 crt1 = "rcrt1.o"; 508 else 509 crt1 = "crt1.o"; 510 } 511 if (crt1) 512 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1))); 513 514 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o"))); 515 } 516 517 if (IsVE) { 518 CmdArgs.push_back("-z"); 519 CmdArgs.push_back("max-page-size=0x4000000"); 520 } 521 522 if (IsIAMCU) 523 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o"))); 524 else if (HasCRTBeginEndFiles) { 525 std::string P; 526 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT && 527 !isAndroid) { 528 std::string crtbegin = ToolChain.getCompilerRT(Args, "crtbegin", 529 ToolChain::FT_Object); 530 if (ToolChain.getVFS().exists(crtbegin)) 531 P = crtbegin; 532 } 533 if (P.empty()) { 534 const char *crtbegin; 535 if (IsStatic) 536 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o"; 537 else if (Args.hasArg(options::OPT_shared)) 538 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o"; 539 else if (IsPIE || IsStaticPIE) 540 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o"; 541 else 542 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o"; 543 P = ToolChain.GetFilePath(crtbegin); 544 } 545 CmdArgs.push_back(Args.MakeArgString(P)); 546 } 547 548 // Add crtfastmath.o if available and fast math is enabled. 549 ToolChain.addFastMathRuntimeIfAvailable(Args, CmdArgs); 550 } 551 552 Args.AddAllArgs(CmdArgs, options::OPT_L); 553 Args.AddAllArgs(CmdArgs, options::OPT_u); 554 555 ToolChain.AddFilePathLibArgs(Args, CmdArgs); 556 557 if (D.isUsingLTO()) { 558 assert(!Inputs.empty() && "Must have at least one input."); 559 addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs[0], 560 D.getLTOMode() == LTOK_Thin); 561 } 562 563 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle)) 564 CmdArgs.push_back("--no-demangle"); 565 566 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs); 567 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs); 568 addLinkerCompressDebugSectionsOption(ToolChain, Args, CmdArgs); 569 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA); 570 // The profile runtime also needs access to system libraries. 571 getToolChain().addProfileRTLibs(Args, CmdArgs); 572 573 if (D.CCCIsCXX() && 574 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) { 575 if (ToolChain.ShouldLinkCXXStdlib(Args)) { 576 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) && 577 !Args.hasArg(options::OPT_static); 578 if (OnlyLibstdcxxStatic) 579 CmdArgs.push_back("-Bstatic"); 580 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs); 581 if (OnlyLibstdcxxStatic) 582 CmdArgs.push_back("-Bdynamic"); 583 } 584 CmdArgs.push_back("-lm"); 585 } 586 // Silence warnings when linking C code with a C++ '-stdlib' argument. 587 Args.ClaimAllArgs(options::OPT_stdlib_EQ); 588 589 if (!Args.hasArg(options::OPT_nostdlib)) { 590 if (!Args.hasArg(options::OPT_nodefaultlibs)) { 591 if (IsStatic || IsStaticPIE) 592 CmdArgs.push_back("--start-group"); 593 594 if (NeedsSanitizerDeps) 595 linkSanitizerRuntimeDeps(ToolChain, CmdArgs); 596 597 if (NeedsXRayDeps) 598 linkXRayRuntimeDeps(ToolChain, CmdArgs); 599 600 bool WantPthread = Args.hasArg(options::OPT_pthread) || 601 Args.hasArg(options::OPT_pthreads); 602 603 // Use the static OpenMP runtime with -static-openmp 604 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) && 605 !Args.hasArg(options::OPT_static); 606 607 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that 608 // require librt. Most modern Linux platforms do, but some may not. 609 if (addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP, 610 JA.isHostOffloading(Action::OFK_OpenMP), 611 /* GompNeedsRT= */ true)) 612 // OpenMP runtimes implies pthreads when using the GNU toolchain. 613 // FIXME: Does this really make sense for all GNU toolchains? 614 WantPthread = true; 615 616 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 617 618 if (WantPthread && !isAndroid) 619 CmdArgs.push_back("-lpthread"); 620 621 if (Args.hasArg(options::OPT_fsplit_stack)) 622 CmdArgs.push_back("--wrap=pthread_create"); 623 624 if (!Args.hasArg(options::OPT_nolibc)) 625 CmdArgs.push_back("-lc"); 626 627 // Add IAMCU specific libs, if needed. 628 if (IsIAMCU) 629 CmdArgs.push_back("-lgloss"); 630 631 if (IsStatic || IsStaticPIE) 632 CmdArgs.push_back("--end-group"); 633 else 634 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 635 636 // Add IAMCU specific libs (outside the group), if needed. 637 if (IsIAMCU) { 638 CmdArgs.push_back("--as-needed"); 639 CmdArgs.push_back("-lsoftfp"); 640 CmdArgs.push_back("--no-as-needed"); 641 } 642 } 643 644 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) { 645 if (HasCRTBeginEndFiles) { 646 std::string P; 647 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT && 648 !isAndroid) { 649 std::string crtend = ToolChain.getCompilerRT(Args, "crtend", 650 ToolChain::FT_Object); 651 if (ToolChain.getVFS().exists(crtend)) 652 P = crtend; 653 } 654 if (P.empty()) { 655 const char *crtend; 656 if (Args.hasArg(options::OPT_shared)) 657 crtend = isAndroid ? "crtend_so.o" : "crtendS.o"; 658 else if (IsPIE || IsStaticPIE) 659 crtend = isAndroid ? "crtend_android.o" : "crtendS.o"; 660 else 661 crtend = isAndroid ? "crtend_android.o" : "crtend.o"; 662 P = ToolChain.GetFilePath(crtend); 663 } 664 CmdArgs.push_back(Args.MakeArgString(P)); 665 } 666 if (!isAndroid) 667 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o"))); 668 } 669 } 670 671 Args.AddAllArgs(CmdArgs, options::OPT_T); 672 673 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath()); 674 C.addCommand(std::make_unique<Command>(JA, *this, 675 ResponseFileSupport::AtFileCurCP(), 676 Exec, CmdArgs, Inputs, Output)); 677 } 678 679 void tools::gnutools::Assembler::ConstructJob(Compilation &C, 680 const JobAction &JA, 681 const InputInfo &Output, 682 const InputInfoList &Inputs, 683 const ArgList &Args, 684 const char *LinkingOutput) const { 685 const auto &D = getToolChain().getDriver(); 686 687 claimNoWarnArgs(Args); 688 689 ArgStringList CmdArgs; 690 691 llvm::Reloc::Model RelocationModel; 692 unsigned PICLevel; 693 bool IsPIE; 694 const char *DefaultAssembler = "as"; 695 std::tie(RelocationModel, PICLevel, IsPIE) = 696 ParsePICArgs(getToolChain(), Args); 697 698 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) { 699 if (A->getOption().getID() == options::OPT_gz) { 700 CmdArgs.push_back("--compress-debug-sections"); 701 } else { 702 StringRef Value = A->getValue(); 703 if (Value == "none" || Value == "zlib" || Value == "zlib-gnu") { 704 CmdArgs.push_back( 705 Args.MakeArgString("--compress-debug-sections=" + Twine(Value))); 706 } else { 707 D.Diag(diag::err_drv_unsupported_option_argument) 708 << A->getOption().getName() << Value; 709 } 710 } 711 } 712 713 if (getToolChain().isNoExecStackDefault()) { 714 CmdArgs.push_back("--noexecstack"); 715 } 716 717 switch (getToolChain().getArch()) { 718 default: 719 break; 720 // Add --32/--64 to make sure we get the format we want. 721 // This is incomplete 722 case llvm::Triple::x86: 723 CmdArgs.push_back("--32"); 724 break; 725 case llvm::Triple::x86_64: 726 if (getToolChain().getTriple().getEnvironment() == llvm::Triple::GNUX32) 727 CmdArgs.push_back("--x32"); 728 else 729 CmdArgs.push_back("--64"); 730 break; 731 case llvm::Triple::ppc: { 732 CmdArgs.push_back("-a32"); 733 CmdArgs.push_back("-mppc"); 734 CmdArgs.push_back("-mbig-endian"); 735 CmdArgs.push_back( 736 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple()))); 737 break; 738 } 739 case llvm::Triple::ppcle: { 740 CmdArgs.push_back("-a32"); 741 CmdArgs.push_back("-mppc"); 742 CmdArgs.push_back("-mlittle-endian"); 743 CmdArgs.push_back( 744 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple()))); 745 break; 746 } 747 case llvm::Triple::ppc64: { 748 CmdArgs.push_back("-a64"); 749 CmdArgs.push_back("-mppc64"); 750 CmdArgs.push_back("-mbig-endian"); 751 CmdArgs.push_back( 752 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple()))); 753 break; 754 } 755 case llvm::Triple::ppc64le: { 756 CmdArgs.push_back("-a64"); 757 CmdArgs.push_back("-mppc64"); 758 CmdArgs.push_back("-mlittle-endian"); 759 CmdArgs.push_back( 760 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple()))); 761 break; 762 } 763 case llvm::Triple::riscv32: 764 case llvm::Triple::riscv64: { 765 StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple()); 766 CmdArgs.push_back("-mabi"); 767 CmdArgs.push_back(ABIName.data()); 768 StringRef MArchName = riscv::getRISCVArch(Args, getToolChain().getTriple()); 769 CmdArgs.push_back("-march"); 770 CmdArgs.push_back(MArchName.data()); 771 break; 772 } 773 case llvm::Triple::sparc: 774 case llvm::Triple::sparcel: { 775 CmdArgs.push_back("-32"); 776 std::string CPU = getCPUName(Args, getToolChain().getTriple()); 777 CmdArgs.push_back( 778 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 779 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 780 break; 781 } 782 case llvm::Triple::sparcv9: { 783 CmdArgs.push_back("-64"); 784 std::string CPU = getCPUName(Args, getToolChain().getTriple()); 785 CmdArgs.push_back( 786 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 787 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 788 break; 789 } 790 case llvm::Triple::arm: 791 case llvm::Triple::armeb: 792 case llvm::Triple::thumb: 793 case llvm::Triple::thumbeb: { 794 const llvm::Triple &Triple2 = getToolChain().getTriple(); 795 CmdArgs.push_back(isArmBigEndian(Triple2, Args) ? "-EB" : "-EL"); 796 switch (Triple2.getSubArch()) { 797 case llvm::Triple::ARMSubArch_v7: 798 CmdArgs.push_back("-mfpu=neon"); 799 break; 800 case llvm::Triple::ARMSubArch_v8: 801 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8"); 802 break; 803 default: 804 break; 805 } 806 807 switch (arm::getARMFloatABI(getToolChain(), Args)) { 808 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!"); 809 case arm::FloatABI::Soft: 810 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft")); 811 break; 812 case arm::FloatABI::SoftFP: 813 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp")); 814 break; 815 case arm::FloatABI::Hard: 816 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard")); 817 break; 818 } 819 820 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 821 normalizeCPUNamesForAssembler(Args, CmdArgs); 822 823 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ); 824 break; 825 } 826 case llvm::Triple::aarch64: 827 case llvm::Triple::aarch64_be: { 828 CmdArgs.push_back( 829 getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL"); 830 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 831 normalizeCPUNamesForAssembler(Args, CmdArgs); 832 833 break; 834 } 835 case llvm::Triple::mips: 836 case llvm::Triple::mipsel: 837 case llvm::Triple::mips64: 838 case llvm::Triple::mips64el: { 839 StringRef CPUName; 840 StringRef ABIName; 841 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName); 842 ABIName = mips::getGnuCompatibleMipsABIName(ABIName); 843 844 CmdArgs.push_back("-march"); 845 CmdArgs.push_back(CPUName.data()); 846 847 CmdArgs.push_back("-mabi"); 848 CmdArgs.push_back(ABIName.data()); 849 850 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE, 851 // or -mshared (not implemented) is in effect. 852 if (RelocationModel == llvm::Reloc::Static) 853 CmdArgs.push_back("-mno-shared"); 854 855 // LLVM doesn't support -mplt yet and acts as if it is always given. 856 // However, -mplt has no effect with the N64 ABI. 857 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls)) 858 CmdArgs.push_back("-call_nonpic"); 859 860 if (getToolChain().getTriple().isLittleEndian()) 861 CmdArgs.push_back("-EL"); 862 else 863 CmdArgs.push_back("-EB"); 864 865 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) { 866 if (StringRef(A->getValue()) == "2008") 867 CmdArgs.push_back(Args.MakeArgString("-mnan=2008")); 868 } 869 870 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default. 871 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx, 872 options::OPT_mfp64)) { 873 A->claim(); 874 A->render(Args, CmdArgs); 875 } else if (mips::shouldUseFPXX( 876 Args, getToolChain().getTriple(), CPUName, ABIName, 877 mips::getMipsFloatABI(getToolChain().getDriver(), Args, 878 getToolChain().getTriple()))) 879 CmdArgs.push_back("-mfpxx"); 880 881 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of 882 // -mno-mips16 is actually -no-mips16. 883 if (Arg *A = 884 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) { 885 if (A->getOption().matches(options::OPT_mips16)) { 886 A->claim(); 887 A->render(Args, CmdArgs); 888 } else { 889 A->claim(); 890 CmdArgs.push_back("-no-mips16"); 891 } 892 } 893 894 Args.AddLastArg(CmdArgs, options::OPT_mmicromips, 895 options::OPT_mno_micromips); 896 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp); 897 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2); 898 899 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) { 900 // Do not use AddLastArg because not all versions of MIPS assembler 901 // support -mmsa / -mno-msa options. 902 if (A->getOption().matches(options::OPT_mmsa)) 903 CmdArgs.push_back(Args.MakeArgString("-mmsa")); 904 } 905 906 Args.AddLastArg(CmdArgs, options::OPT_mhard_float, 907 options::OPT_msoft_float); 908 909 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float, 910 options::OPT_msingle_float); 911 912 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg, 913 options::OPT_mno_odd_spreg); 914 915 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 916 break; 917 } 918 case llvm::Triple::systemz: { 919 // Always pass an -march option, since our default of z10 is later 920 // than the GNU assembler's default. 921 std::string CPUName = systemz::getSystemZTargetCPU(Args); 922 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName)); 923 break; 924 } 925 case llvm::Triple::ve: 926 DefaultAssembler = "nas"; 927 } 928 929 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ, 930 options::OPT_fdebug_prefix_map_EQ)) { 931 StringRef Map = A->getValue(); 932 if (Map.find('=') == StringRef::npos) 933 D.Diag(diag::err_drv_invalid_argument_to_option) 934 << Map << A->getOption().getName(); 935 else { 936 CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map")); 937 CmdArgs.push_back(Args.MakeArgString(Map)); 938 } 939 A->claim(); 940 } 941 942 Args.AddAllArgs(CmdArgs, options::OPT_I); 943 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 944 945 CmdArgs.push_back("-o"); 946 CmdArgs.push_back(Output.getFilename()); 947 948 for (const auto &II : Inputs) 949 CmdArgs.push_back(II.getFilename()); 950 951 const char *Exec = 952 Args.MakeArgString(getToolChain().GetProgramPath(DefaultAssembler)); 953 C.addCommand(std::make_unique<Command>(JA, *this, 954 ResponseFileSupport::AtFileCurCP(), 955 Exec, CmdArgs, Inputs, Output)); 956 957 // Handle the debug info splitting at object creation time if we're 958 // creating an object. 959 // TODO: Currently only works on linux with newer objcopy. 960 if (Args.hasArg(options::OPT_gsplit_dwarf) && 961 getToolChain().getTriple().isOSLinux()) 962 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, 963 SplitDebugName(JA, Args, Inputs[0], Output)); 964 } 965 966 namespace { 967 // Filter to remove Multilibs that don't exist as a suffix to Path 968 class FilterNonExistent { 969 StringRef Base, File; 970 llvm::vfs::FileSystem &VFS; 971 972 public: 973 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS) 974 : Base(Base), File(File), VFS(VFS) {} 975 bool operator()(const Multilib &M) { 976 return !VFS.exists(Base + M.gccSuffix() + File); 977 } 978 }; 979 } // end anonymous namespace 980 981 static bool isSoftFloatABI(const ArgList &Args) { 982 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float, 983 options::OPT_mfloat_abi_EQ); 984 if (!A) 985 return false; 986 987 return A->getOption().matches(options::OPT_msoft_float) || 988 (A->getOption().matches(options::OPT_mfloat_abi_EQ) && 989 A->getValue() == StringRef("soft")); 990 } 991 992 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) { 993 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb; 994 } 995 996 static bool isMipsEL(llvm::Triple::ArchType Arch) { 997 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el; 998 } 999 1000 static bool isMips16(const ArgList &Args) { 1001 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16); 1002 return A && A->getOption().matches(options::OPT_mips16); 1003 } 1004 1005 static bool isMicroMips(const ArgList &Args) { 1006 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips); 1007 return A && A->getOption().matches(options::OPT_mmicromips); 1008 } 1009 1010 static bool isMSP430(llvm::Triple::ArchType Arch) { 1011 return Arch == llvm::Triple::msp430; 1012 } 1013 1014 static Multilib makeMultilib(StringRef commonSuffix) { 1015 return Multilib(commonSuffix, commonSuffix, commonSuffix); 1016 } 1017 1018 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags, 1019 FilterNonExistent &NonExistent, 1020 DetectedMultilibs &Result) { 1021 // Check for Code Sourcery toolchain multilibs 1022 MultilibSet CSMipsMultilibs; 1023 { 1024 auto MArchMips16 = makeMultilib("/mips16").flag("+m32").flag("+mips16"); 1025 1026 auto MArchMicroMips = 1027 makeMultilib("/micromips").flag("+m32").flag("+mmicromips"); 1028 1029 auto MArchDefault = makeMultilib("").flag("-mips16").flag("-mmicromips"); 1030 1031 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc"); 1032 1033 auto SoftFloat = makeMultilib("/soft-float").flag("+msoft-float"); 1034 1035 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008"); 1036 1037 auto DefaultFloat = 1038 makeMultilib("").flag("-msoft-float").flag("-mnan=2008"); 1039 1040 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL"); 1041 1042 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 1043 1044 // Note that this one's osSuffix is "" 1045 auto MAbi64 = makeMultilib("") 1046 .gccSuffix("/64") 1047 .includeSuffix("/64") 1048 .flag("+mabi=n64") 1049 .flag("-mabi=n32") 1050 .flag("-m32"); 1051 1052 CSMipsMultilibs = 1053 MultilibSet() 1054 .Either(MArchMips16, MArchMicroMips, MArchDefault) 1055 .Maybe(UCLibc) 1056 .Either(SoftFloat, Nan2008, DefaultFloat) 1057 .FilterOut("/micromips/nan2008") 1058 .FilterOut("/mips16/nan2008") 1059 .Either(BigEndian, LittleEndian) 1060 .Maybe(MAbi64) 1061 .FilterOut("/mips16.*/64") 1062 .FilterOut("/micromips.*/64") 1063 .FilterOut(NonExistent) 1064 .setIncludeDirsCallback([](const Multilib &M) { 1065 std::vector<std::string> Dirs({"/include"}); 1066 if (StringRef(M.includeSuffix()).startswith("/uclibc")) 1067 Dirs.push_back( 1068 "/../../../../mips-linux-gnu/libc/uclibc/usr/include"); 1069 else 1070 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include"); 1071 return Dirs; 1072 }); 1073 } 1074 1075 MultilibSet DebianMipsMultilibs; 1076 { 1077 Multilib MAbiN32 = 1078 Multilib().gccSuffix("/n32").includeSuffix("/n32").flag("+mabi=n32"); 1079 1080 Multilib M64 = Multilib() 1081 .gccSuffix("/64") 1082 .includeSuffix("/64") 1083 .flag("+m64") 1084 .flag("-m32") 1085 .flag("-mabi=n32"); 1086 1087 Multilib M32 = Multilib().flag("-m64").flag("+m32").flag("-mabi=n32"); 1088 1089 DebianMipsMultilibs = 1090 MultilibSet().Either(M32, M64, MAbiN32).FilterOut(NonExistent); 1091 } 1092 1093 // Sort candidates. Toolchain that best meets the directories tree goes first. 1094 // Then select the first toolchains matches command line flags. 1095 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs}; 1096 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size()) 1097 std::iter_swap(Candidates, Candidates + 1); 1098 for (const MultilibSet *Candidate : Candidates) { 1099 if (Candidate->select(Flags, Result.SelectedMultilib)) { 1100 if (Candidate == &DebianMipsMultilibs) 1101 Result.BiarchSibling = Multilib(); 1102 Result.Multilibs = *Candidate; 1103 return true; 1104 } 1105 } 1106 return false; 1107 } 1108 1109 static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path, 1110 const Multilib::flags_list &Flags, 1111 FilterNonExistent &NonExistent, 1112 DetectedMultilibs &Result) { 1113 1114 MultilibSet AndroidMipsMultilibs = 1115 MultilibSet() 1116 .Maybe(Multilib("/mips-r2").flag("+march=mips32r2")) 1117 .Maybe(Multilib("/mips-r6").flag("+march=mips32r6")) 1118 .FilterOut(NonExistent); 1119 1120 MultilibSet AndroidMipselMultilibs = 1121 MultilibSet() 1122 .Either(Multilib().flag("+march=mips32"), 1123 Multilib("/mips-r2", "", "/mips-r2").flag("+march=mips32r2"), 1124 Multilib("/mips-r6", "", "/mips-r6").flag("+march=mips32r6")) 1125 .FilterOut(NonExistent); 1126 1127 MultilibSet AndroidMips64elMultilibs = 1128 MultilibSet() 1129 .Either( 1130 Multilib().flag("+march=mips64r6"), 1131 Multilib("/32/mips-r1", "", "/mips-r1").flag("+march=mips32"), 1132 Multilib("/32/mips-r2", "", "/mips-r2").flag("+march=mips32r2"), 1133 Multilib("/32/mips-r6", "", "/mips-r6").flag("+march=mips32r6")) 1134 .FilterOut(NonExistent); 1135 1136 MultilibSet *MS = &AndroidMipsMultilibs; 1137 if (VFS.exists(Path + "/mips-r6")) 1138 MS = &AndroidMipselMultilibs; 1139 else if (VFS.exists(Path + "/32")) 1140 MS = &AndroidMips64elMultilibs; 1141 if (MS->select(Flags, Result.SelectedMultilib)) { 1142 Result.Multilibs = *MS; 1143 return true; 1144 } 1145 return false; 1146 } 1147 1148 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags, 1149 FilterNonExistent &NonExistent, 1150 DetectedMultilibs &Result) { 1151 // Musl toolchain multilibs 1152 MultilibSet MuslMipsMultilibs; 1153 { 1154 auto MArchMipsR2 = makeMultilib("") 1155 .osSuffix("/mips-r2-hard-musl") 1156 .flag("+EB") 1157 .flag("-EL") 1158 .flag("+march=mips32r2"); 1159 1160 auto MArchMipselR2 = makeMultilib("/mipsel-r2-hard-musl") 1161 .flag("-EB") 1162 .flag("+EL") 1163 .flag("+march=mips32r2"); 1164 1165 MuslMipsMultilibs = MultilibSet().Either(MArchMipsR2, MArchMipselR2); 1166 1167 // Specify the callback that computes the include directories. 1168 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) { 1169 return std::vector<std::string>( 1170 {"/../sysroot" + M.osSuffix() + "/usr/include"}); 1171 }); 1172 } 1173 if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilib)) { 1174 Result.Multilibs = MuslMipsMultilibs; 1175 return true; 1176 } 1177 return false; 1178 } 1179 1180 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags, 1181 FilterNonExistent &NonExistent, 1182 DetectedMultilibs &Result) { 1183 // CodeScape MTI toolchain v1.2 and early. 1184 MultilibSet MtiMipsMultilibsV1; 1185 { 1186 auto MArchMips32 = makeMultilib("/mips32") 1187 .flag("+m32") 1188 .flag("-m64") 1189 .flag("-mmicromips") 1190 .flag("+march=mips32"); 1191 1192 auto MArchMicroMips = makeMultilib("/micromips") 1193 .flag("+m32") 1194 .flag("-m64") 1195 .flag("+mmicromips"); 1196 1197 auto MArchMips64r2 = makeMultilib("/mips64r2") 1198 .flag("-m32") 1199 .flag("+m64") 1200 .flag("+march=mips64r2"); 1201 1202 auto MArchMips64 = makeMultilib("/mips64").flag("-m32").flag("+m64").flag( 1203 "-march=mips64r2"); 1204 1205 auto MArchDefault = makeMultilib("") 1206 .flag("+m32") 1207 .flag("-m64") 1208 .flag("-mmicromips") 1209 .flag("+march=mips32r2"); 1210 1211 auto Mips16 = makeMultilib("/mips16").flag("+mips16"); 1212 1213 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc"); 1214 1215 auto MAbi64 = 1216 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32"); 1217 1218 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL"); 1219 1220 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 1221 1222 auto SoftFloat = makeMultilib("/sof").flag("+msoft-float"); 1223 1224 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008"); 1225 1226 MtiMipsMultilibsV1 = 1227 MultilibSet() 1228 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64, 1229 MArchDefault) 1230 .Maybe(UCLibc) 1231 .Maybe(Mips16) 1232 .FilterOut("/mips64/mips16") 1233 .FilterOut("/mips64r2/mips16") 1234 .FilterOut("/micromips/mips16") 1235 .Maybe(MAbi64) 1236 .FilterOut("/micromips/64") 1237 .FilterOut("/mips32/64") 1238 .FilterOut("^/64") 1239 .FilterOut("/mips16/64") 1240 .Either(BigEndian, LittleEndian) 1241 .Maybe(SoftFloat) 1242 .Maybe(Nan2008) 1243 .FilterOut(".*sof/nan2008") 1244 .FilterOut(NonExistent) 1245 .setIncludeDirsCallback([](const Multilib &M) { 1246 std::vector<std::string> Dirs({"/include"}); 1247 if (StringRef(M.includeSuffix()).startswith("/uclibc")) 1248 Dirs.push_back("/../../../../sysroot/uclibc/usr/include"); 1249 else 1250 Dirs.push_back("/../../../../sysroot/usr/include"); 1251 return Dirs; 1252 }); 1253 } 1254 1255 // CodeScape IMG toolchain starting from v1.3. 1256 MultilibSet MtiMipsMultilibsV2; 1257 { 1258 auto BeHard = makeMultilib("/mips-r2-hard") 1259 .flag("+EB") 1260 .flag("-msoft-float") 1261 .flag("-mnan=2008") 1262 .flag("-muclibc"); 1263 auto BeSoft = makeMultilib("/mips-r2-soft") 1264 .flag("+EB") 1265 .flag("+msoft-float") 1266 .flag("-mnan=2008"); 1267 auto ElHard = makeMultilib("/mipsel-r2-hard") 1268 .flag("+EL") 1269 .flag("-msoft-float") 1270 .flag("-mnan=2008") 1271 .flag("-muclibc"); 1272 auto ElSoft = makeMultilib("/mipsel-r2-soft") 1273 .flag("+EL") 1274 .flag("+msoft-float") 1275 .flag("-mnan=2008") 1276 .flag("-mmicromips"); 1277 auto BeHardNan = makeMultilib("/mips-r2-hard-nan2008") 1278 .flag("+EB") 1279 .flag("-msoft-float") 1280 .flag("+mnan=2008") 1281 .flag("-muclibc"); 1282 auto ElHardNan = makeMultilib("/mipsel-r2-hard-nan2008") 1283 .flag("+EL") 1284 .flag("-msoft-float") 1285 .flag("+mnan=2008") 1286 .flag("-muclibc") 1287 .flag("-mmicromips"); 1288 auto BeHardNanUclibc = makeMultilib("/mips-r2-hard-nan2008-uclibc") 1289 .flag("+EB") 1290 .flag("-msoft-float") 1291 .flag("+mnan=2008") 1292 .flag("+muclibc"); 1293 auto ElHardNanUclibc = makeMultilib("/mipsel-r2-hard-nan2008-uclibc") 1294 .flag("+EL") 1295 .flag("-msoft-float") 1296 .flag("+mnan=2008") 1297 .flag("+muclibc"); 1298 auto BeHardUclibc = makeMultilib("/mips-r2-hard-uclibc") 1299 .flag("+EB") 1300 .flag("-msoft-float") 1301 .flag("-mnan=2008") 1302 .flag("+muclibc"); 1303 auto ElHardUclibc = makeMultilib("/mipsel-r2-hard-uclibc") 1304 .flag("+EL") 1305 .flag("-msoft-float") 1306 .flag("-mnan=2008") 1307 .flag("+muclibc"); 1308 auto ElMicroHardNan = makeMultilib("/micromipsel-r2-hard-nan2008") 1309 .flag("+EL") 1310 .flag("-msoft-float") 1311 .flag("+mnan=2008") 1312 .flag("+mmicromips"); 1313 auto ElMicroSoft = makeMultilib("/micromipsel-r2-soft") 1314 .flag("+EL") 1315 .flag("+msoft-float") 1316 .flag("-mnan=2008") 1317 .flag("+mmicromips"); 1318 1319 auto O32 = 1320 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64"); 1321 auto N32 = 1322 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64"); 1323 auto N64 = 1324 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64"); 1325 1326 MtiMipsMultilibsV2 = 1327 MultilibSet() 1328 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan, 1329 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc, 1330 ElHardUclibc, ElMicroHardNan, ElMicroSoft}) 1331 .Either(O32, N32, N64) 1332 .FilterOut(NonExistent) 1333 .setIncludeDirsCallback([](const Multilib &M) { 1334 return std::vector<std::string>({"/../../../../sysroot" + 1335 M.includeSuffix() + 1336 "/../usr/include"}); 1337 }) 1338 .setFilePathsCallback([](const Multilib &M) { 1339 return std::vector<std::string>( 1340 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()}); 1341 }); 1342 } 1343 for (auto Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) { 1344 if (Candidate->select(Flags, Result.SelectedMultilib)) { 1345 Result.Multilibs = *Candidate; 1346 return true; 1347 } 1348 } 1349 return false; 1350 } 1351 1352 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags, 1353 FilterNonExistent &NonExistent, 1354 DetectedMultilibs &Result) { 1355 // CodeScape IMG toolchain v1.2 and early. 1356 MultilibSet ImgMultilibsV1; 1357 { 1358 auto Mips64r6 = makeMultilib("/mips64r6").flag("+m64").flag("-m32"); 1359 1360 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 1361 1362 auto MAbi64 = 1363 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32"); 1364 1365 ImgMultilibsV1 = 1366 MultilibSet() 1367 .Maybe(Mips64r6) 1368 .Maybe(MAbi64) 1369 .Maybe(LittleEndian) 1370 .FilterOut(NonExistent) 1371 .setIncludeDirsCallback([](const Multilib &M) { 1372 return std::vector<std::string>( 1373 {"/include", "/../../../../sysroot/usr/include"}); 1374 }); 1375 } 1376 1377 // CodeScape IMG toolchain starting from v1.3. 1378 MultilibSet ImgMultilibsV2; 1379 { 1380 auto BeHard = makeMultilib("/mips-r6-hard") 1381 .flag("+EB") 1382 .flag("-msoft-float") 1383 .flag("-mmicromips"); 1384 auto BeSoft = makeMultilib("/mips-r6-soft") 1385 .flag("+EB") 1386 .flag("+msoft-float") 1387 .flag("-mmicromips"); 1388 auto ElHard = makeMultilib("/mipsel-r6-hard") 1389 .flag("+EL") 1390 .flag("-msoft-float") 1391 .flag("-mmicromips"); 1392 auto ElSoft = makeMultilib("/mipsel-r6-soft") 1393 .flag("+EL") 1394 .flag("+msoft-float") 1395 .flag("-mmicromips"); 1396 auto BeMicroHard = makeMultilib("/micromips-r6-hard") 1397 .flag("+EB") 1398 .flag("-msoft-float") 1399 .flag("+mmicromips"); 1400 auto BeMicroSoft = makeMultilib("/micromips-r6-soft") 1401 .flag("+EB") 1402 .flag("+msoft-float") 1403 .flag("+mmicromips"); 1404 auto ElMicroHard = makeMultilib("/micromipsel-r6-hard") 1405 .flag("+EL") 1406 .flag("-msoft-float") 1407 .flag("+mmicromips"); 1408 auto ElMicroSoft = makeMultilib("/micromipsel-r6-soft") 1409 .flag("+EL") 1410 .flag("+msoft-float") 1411 .flag("+mmicromips"); 1412 1413 auto O32 = 1414 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64"); 1415 auto N32 = 1416 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64"); 1417 auto N64 = 1418 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64"); 1419 1420 ImgMultilibsV2 = 1421 MultilibSet() 1422 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft, 1423 ElMicroHard, ElMicroSoft}) 1424 .Either(O32, N32, N64) 1425 .FilterOut(NonExistent) 1426 .setIncludeDirsCallback([](const Multilib &M) { 1427 return std::vector<std::string>({"/../../../../sysroot" + 1428 M.includeSuffix() + 1429 "/../usr/include"}); 1430 }) 1431 .setFilePathsCallback([](const Multilib &M) { 1432 return std::vector<std::string>( 1433 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()}); 1434 }); 1435 } 1436 for (auto Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) { 1437 if (Candidate->select(Flags, Result.SelectedMultilib)) { 1438 Result.Multilibs = *Candidate; 1439 return true; 1440 } 1441 } 1442 return false; 1443 } 1444 1445 bool clang::driver::findMIPSMultilibs(const Driver &D, 1446 const llvm::Triple &TargetTriple, 1447 StringRef Path, const ArgList &Args, 1448 DetectedMultilibs &Result) { 1449 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1450 1451 StringRef CPUName; 1452 StringRef ABIName; 1453 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName); 1454 1455 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 1456 1457 Multilib::flags_list Flags; 1458 addMultilibFlag(TargetTriple.isMIPS32(), "m32", Flags); 1459 addMultilibFlag(TargetTriple.isMIPS64(), "m64", Flags); 1460 addMultilibFlag(isMips16(Args), "mips16", Flags); 1461 addMultilibFlag(CPUName == "mips32", "march=mips32", Flags); 1462 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" || 1463 CPUName == "mips32r5" || CPUName == "p5600", 1464 "march=mips32r2", Flags); 1465 addMultilibFlag(CPUName == "mips32r6", "march=mips32r6", Flags); 1466 addMultilibFlag(CPUName == "mips64", "march=mips64", Flags); 1467 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" || 1468 CPUName == "mips64r5" || CPUName == "octeon" || 1469 CPUName == "octeon+", 1470 "march=mips64r2", Flags); 1471 addMultilibFlag(CPUName == "mips64r6", "march=mips64r6", Flags); 1472 addMultilibFlag(isMicroMips(Args), "mmicromips", Flags); 1473 addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags); 1474 addMultilibFlag(tools::mips::isNaN2008(Args, TargetTriple), "mnan=2008", 1475 Flags); 1476 addMultilibFlag(ABIName == "n32", "mabi=n32", Flags); 1477 addMultilibFlag(ABIName == "n64", "mabi=n64", Flags); 1478 addMultilibFlag(isSoftFloatABI(Args), "msoft-float", Flags); 1479 addMultilibFlag(!isSoftFloatABI(Args), "mhard-float", Flags); 1480 addMultilibFlag(isMipsEL(TargetArch), "EL", Flags); 1481 addMultilibFlag(!isMipsEL(TargetArch), "EB", Flags); 1482 1483 if (TargetTriple.isAndroid()) 1484 return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent, 1485 Result); 1486 1487 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1488 TargetTriple.getOS() == llvm::Triple::Linux && 1489 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment) 1490 return findMipsMuslMultilibs(Flags, NonExistent, Result); 1491 1492 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1493 TargetTriple.getOS() == llvm::Triple::Linux && 1494 TargetTriple.isGNUEnvironment()) 1495 return findMipsMtiMultilibs(Flags, NonExistent, Result); 1496 1497 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies && 1498 TargetTriple.getOS() == llvm::Triple::Linux && 1499 TargetTriple.isGNUEnvironment()) 1500 return findMipsImgMultilibs(Flags, NonExistent, Result); 1501 1502 if (findMipsCsMultilibs(Flags, NonExistent, Result)) 1503 return true; 1504 1505 // Fallback to the regular toolchain-tree structure. 1506 Multilib Default; 1507 Result.Multilibs.push_back(Default); 1508 Result.Multilibs.FilterOut(NonExistent); 1509 1510 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) { 1511 Result.BiarchSibling = Multilib(); 1512 return true; 1513 } 1514 1515 return false; 1516 } 1517 1518 static void findAndroidArmMultilibs(const Driver &D, 1519 const llvm::Triple &TargetTriple, 1520 StringRef Path, const ArgList &Args, 1521 DetectedMultilibs &Result) { 1522 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb. 1523 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1524 Multilib ArmV7Multilib = makeMultilib("/armv7-a") 1525 .flag("+march=armv7-a") 1526 .flag("-mthumb"); 1527 Multilib ThumbMultilib = makeMultilib("/thumb") 1528 .flag("-march=armv7-a") 1529 .flag("+mthumb"); 1530 Multilib ArmV7ThumbMultilib = makeMultilib("/armv7-a/thumb") 1531 .flag("+march=armv7-a") 1532 .flag("+mthumb"); 1533 Multilib DefaultMultilib = makeMultilib("") 1534 .flag("-march=armv7-a") 1535 .flag("-mthumb"); 1536 MultilibSet AndroidArmMultilibs = 1537 MultilibSet() 1538 .Either(ThumbMultilib, ArmV7Multilib, 1539 ArmV7ThumbMultilib, DefaultMultilib) 1540 .FilterOut(NonExistent); 1541 1542 Multilib::flags_list Flags; 1543 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ); 1544 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm; 1545 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb; 1546 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7; 1547 bool IsThumbMode = IsThumbArch || 1548 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) || 1549 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB); 1550 bool IsArmV7Mode = (IsArmArch || IsThumbArch) && 1551 (llvm::ARM::parseArchVersion(Arch) == 7 || 1552 (IsArmArch && Arch == "" && IsV7SubArch)); 1553 addMultilibFlag(IsArmV7Mode, "march=armv7-a", Flags); 1554 addMultilibFlag(IsThumbMode, "mthumb", Flags); 1555 1556 if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilib)) 1557 Result.Multilibs = AndroidArmMultilibs; 1558 } 1559 1560 static bool findMSP430Multilibs(const Driver &D, 1561 const llvm::Triple &TargetTriple, 1562 StringRef Path, const ArgList &Args, 1563 DetectedMultilibs &Result) { 1564 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1565 Multilib WithoutExceptions = makeMultilib("/430").flag("-exceptions"); 1566 Multilib WithExceptions = makeMultilib("/430/exceptions").flag("+exceptions"); 1567 1568 // FIXME: when clang starts to support msp430x ISA additional logic 1569 // to select between multilib must be implemented 1570 // Multilib MSP430xMultilib = makeMultilib("/large"); 1571 1572 Result.Multilibs.push_back(WithoutExceptions); 1573 Result.Multilibs.push_back(WithExceptions); 1574 Result.Multilibs.FilterOut(NonExistent); 1575 1576 Multilib::flags_list Flags; 1577 addMultilibFlag(Args.hasFlag(options::OPT_fexceptions, 1578 options::OPT_fno_exceptions, false), 1579 "exceptions", Flags); 1580 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) 1581 return true; 1582 1583 return false; 1584 } 1585 1586 static void findRISCVBareMetalMultilibs(const Driver &D, 1587 const llvm::Triple &TargetTriple, 1588 StringRef Path, const ArgList &Args, 1589 DetectedMultilibs &Result) { 1590 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1591 struct RiscvMultilib { 1592 StringRef march; 1593 StringRef mabi; 1594 }; 1595 // currently only support the set of multilibs like riscv-gnu-toolchain does. 1596 // TODO: support MULTILIB_REUSE 1597 constexpr RiscvMultilib RISCVMultilibSet[] = { 1598 {"rv32i", "ilp32"}, {"rv32im", "ilp32"}, {"rv32iac", "ilp32"}, 1599 {"rv32imac", "ilp32"}, {"rv32imafc", "ilp32f"}, {"rv64imac", "lp64"}, 1600 {"rv64imafdc", "lp64d"}}; 1601 1602 std::vector<Multilib> Ms; 1603 for (auto Element : RISCVMultilibSet) { 1604 // multilib path rule is ${march}/${mabi} 1605 Ms.emplace_back( 1606 makeMultilib((Twine(Element.march) + "/" + Twine(Element.mabi)).str()) 1607 .flag(Twine("+march=", Element.march).str()) 1608 .flag(Twine("+mabi=", Element.mabi).str())); 1609 } 1610 MultilibSet RISCVMultilibs = 1611 MultilibSet() 1612 .Either(ArrayRef<Multilib>(Ms)) 1613 .FilterOut(NonExistent) 1614 .setFilePathsCallback([](const Multilib &M) { 1615 return std::vector<std::string>( 1616 {M.gccSuffix(), 1617 "/../../../../riscv64-unknown-elf/lib" + M.gccSuffix(), 1618 "/../../../../riscv32-unknown-elf/lib" + M.gccSuffix()}); 1619 }); 1620 1621 1622 Multilib::flags_list Flags; 1623 llvm::StringSet<> Added_ABIs; 1624 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple); 1625 StringRef MArch = tools::riscv::getRISCVArch(Args, TargetTriple); 1626 for (auto Element : RISCVMultilibSet) { 1627 addMultilibFlag(MArch == Element.march, 1628 Twine("march=", Element.march).str().c_str(), Flags); 1629 if (!Added_ABIs.count(Element.mabi)) { 1630 Added_ABIs.insert(Element.mabi); 1631 addMultilibFlag(ABIName == Element.mabi, 1632 Twine("mabi=", Element.mabi).str().c_str(), Flags); 1633 } 1634 } 1635 1636 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib)) 1637 Result.Multilibs = RISCVMultilibs; 1638 } 1639 1640 static void findRISCVMultilibs(const Driver &D, 1641 const llvm::Triple &TargetTriple, StringRef Path, 1642 const ArgList &Args, DetectedMultilibs &Result) { 1643 if (TargetTriple.getOS() == llvm::Triple::UnknownOS) 1644 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result); 1645 1646 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1647 Multilib Ilp32 = makeMultilib("lib32/ilp32").flag("+m32").flag("+mabi=ilp32"); 1648 Multilib Ilp32f = 1649 makeMultilib("lib32/ilp32f").flag("+m32").flag("+mabi=ilp32f"); 1650 Multilib Ilp32d = 1651 makeMultilib("lib32/ilp32d").flag("+m32").flag("+mabi=ilp32d"); 1652 Multilib Lp64 = makeMultilib("lib64/lp64").flag("+m64").flag("+mabi=lp64"); 1653 Multilib Lp64f = makeMultilib("lib64/lp64f").flag("+m64").flag("+mabi=lp64f"); 1654 Multilib Lp64d = makeMultilib("lib64/lp64d").flag("+m64").flag("+mabi=lp64d"); 1655 MultilibSet RISCVMultilibs = 1656 MultilibSet() 1657 .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d}) 1658 .FilterOut(NonExistent); 1659 1660 Multilib::flags_list Flags; 1661 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64; 1662 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple); 1663 1664 addMultilibFlag(!IsRV64, "m32", Flags); 1665 addMultilibFlag(IsRV64, "m64", Flags); 1666 addMultilibFlag(ABIName == "ilp32", "mabi=ilp32", Flags); 1667 addMultilibFlag(ABIName == "ilp32f", "mabi=ilp32f", Flags); 1668 addMultilibFlag(ABIName == "ilp32d", "mabi=ilp32d", Flags); 1669 addMultilibFlag(ABIName == "lp64", "mabi=lp64", Flags); 1670 addMultilibFlag(ABIName == "lp64f", "mabi=lp64f", Flags); 1671 addMultilibFlag(ABIName == "lp64d", "mabi=lp64d", Flags); 1672 1673 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib)) 1674 Result.Multilibs = RISCVMultilibs; 1675 } 1676 1677 static bool findBiarchMultilibs(const Driver &D, 1678 const llvm::Triple &TargetTriple, 1679 StringRef Path, const ArgList &Args, 1680 bool NeedsBiarchSuffix, 1681 DetectedMultilibs &Result) { 1682 Multilib Default; 1683 1684 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs 1685 // in what would normally be GCCInstallPath and put the 64-bit 1686 // libs in a subdirectory named 64. The simple logic we follow is that 1687 // *if* there is a subdirectory of the right name with crtbegin.o in it, 1688 // we use that. If not, and if not a biarch triple alias, we look for 1689 // crtbegin.o without the subdirectory. 1690 1691 StringRef Suff64 = "/64"; 1692 // Solaris uses platform-specific suffixes instead of /64. 1693 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 1694 switch (TargetTriple.getArch()) { 1695 case llvm::Triple::x86: 1696 case llvm::Triple::x86_64: 1697 Suff64 = "/amd64"; 1698 break; 1699 case llvm::Triple::sparc: 1700 case llvm::Triple::sparcv9: 1701 Suff64 = "/sparcv9"; 1702 break; 1703 default: 1704 break; 1705 } 1706 } 1707 1708 Multilib Alt64 = Multilib() 1709 .gccSuffix(Suff64) 1710 .includeSuffix(Suff64) 1711 .flag("-m32") 1712 .flag("+m64") 1713 .flag("-mx32"); 1714 Multilib Alt32 = Multilib() 1715 .gccSuffix("/32") 1716 .includeSuffix("/32") 1717 .flag("+m32") 1718 .flag("-m64") 1719 .flag("-mx32"); 1720 Multilib Altx32 = Multilib() 1721 .gccSuffix("/x32") 1722 .includeSuffix("/x32") 1723 .flag("-m32") 1724 .flag("-m64") 1725 .flag("+mx32"); 1726 1727 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a. 1728 FilterNonExistent NonExistent( 1729 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS()); 1730 1731 // Determine default multilib from: 32, 64, x32 1732 // Also handle cases such as 64 on 32, 32 on 64, etc. 1733 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN; 1734 const bool IsX32 = TargetTriple.getEnvironment() == llvm::Triple::GNUX32; 1735 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32)) 1736 Want = WANT64; 1737 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32)) 1738 Want = WANT64; 1739 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64)) 1740 Want = WANT32; 1741 else { 1742 if (TargetTriple.isArch32Bit()) 1743 Want = NeedsBiarchSuffix ? WANT64 : WANT32; 1744 else if (IsX32) 1745 Want = NeedsBiarchSuffix ? WANT64 : WANTX32; 1746 else 1747 Want = NeedsBiarchSuffix ? WANT32 : WANT64; 1748 } 1749 1750 if (Want == WANT32) 1751 Default.flag("+m32").flag("-m64").flag("-mx32"); 1752 else if (Want == WANT64) 1753 Default.flag("-m32").flag("+m64").flag("-mx32"); 1754 else if (Want == WANTX32) 1755 Default.flag("-m32").flag("-m64").flag("+mx32"); 1756 else 1757 return false; 1758 1759 Result.Multilibs.push_back(Default); 1760 Result.Multilibs.push_back(Alt64); 1761 Result.Multilibs.push_back(Alt32); 1762 Result.Multilibs.push_back(Altx32); 1763 1764 Result.Multilibs.FilterOut(NonExistent); 1765 1766 Multilib::flags_list Flags; 1767 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "m64", Flags); 1768 addMultilibFlag(TargetTriple.isArch32Bit(), "m32", Flags); 1769 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "mx32", Flags); 1770 1771 if (!Result.Multilibs.select(Flags, Result.SelectedMultilib)) 1772 return false; 1773 1774 if (Result.SelectedMultilib == Alt64 || Result.SelectedMultilib == Alt32 || 1775 Result.SelectedMultilib == Altx32) 1776 Result.BiarchSibling = Default; 1777 1778 return true; 1779 } 1780 1781 /// Generic_GCC - A tool chain using the 'gcc' command to perform 1782 /// all subcommands; this relies on gcc translating the majority of 1783 /// command line options. 1784 1785 /// Less-than for GCCVersion, implementing a Strict Weak Ordering. 1786 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor, 1787 int RHSPatch, 1788 StringRef RHSPatchSuffix) const { 1789 if (Major != RHSMajor) 1790 return Major < RHSMajor; 1791 if (Minor != RHSMinor) 1792 return Minor < RHSMinor; 1793 if (Patch != RHSPatch) { 1794 // Note that versions without a specified patch sort higher than those with 1795 // a patch. 1796 if (RHSPatch == -1) 1797 return true; 1798 if (Patch == -1) 1799 return false; 1800 1801 // Otherwise just sort on the patch itself. 1802 return Patch < RHSPatch; 1803 } 1804 if (PatchSuffix != RHSPatchSuffix) { 1805 // Sort empty suffixes higher. 1806 if (RHSPatchSuffix.empty()) 1807 return true; 1808 if (PatchSuffix.empty()) 1809 return false; 1810 1811 // Provide a lexicographic sort to make this a total ordering. 1812 return PatchSuffix < RHSPatchSuffix; 1813 } 1814 1815 // The versions are equal. 1816 return false; 1817 } 1818 1819 /// Parse a GCCVersion object out of a string of text. 1820 /// 1821 /// This is the primary means of forming GCCVersion objects. 1822 /*static*/ 1823 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) { 1824 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 1825 std::pair<StringRef, StringRef> First = VersionText.split('.'); 1826 std::pair<StringRef, StringRef> Second = First.second.split('.'); 1827 1828 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 1829 if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0) 1830 return BadVersion; 1831 GoodVersion.MajorStr = First.first.str(); 1832 if (First.second.empty()) 1833 return GoodVersion; 1834 StringRef MinorStr = Second.first; 1835 if (Second.second.empty()) { 1836 if (size_t EndNumber = MinorStr.find_first_not_of("0123456789")) { 1837 GoodVersion.PatchSuffix = std::string(MinorStr.substr(EndNumber)); 1838 MinorStr = MinorStr.slice(0, EndNumber); 1839 } 1840 } 1841 if (MinorStr.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0) 1842 return BadVersion; 1843 GoodVersion.MinorStr = MinorStr.str(); 1844 1845 // First look for a number prefix and parse that if present. Otherwise just 1846 // stash the entire patch string in the suffix, and leave the number 1847 // unspecified. This covers versions strings such as: 1848 // 5 (handled above) 1849 // 4.4 1850 // 4.4-patched 1851 // 4.4.0 1852 // 4.4.x 1853 // 4.4.2-rc4 1854 // 4.4.x-patched 1855 // And retains any patch number it finds. 1856 StringRef PatchText = Second.second; 1857 if (!PatchText.empty()) { 1858 if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) { 1859 // Try to parse the number and any suffix. 1860 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) || 1861 GoodVersion.Patch < 0) 1862 return BadVersion; 1863 GoodVersion.PatchSuffix = std::string(PatchText.substr(EndNumber)); 1864 } 1865 } 1866 1867 return GoodVersion; 1868 } 1869 1870 static llvm::StringRef getGCCToolchainDir(const ArgList &Args, 1871 llvm::StringRef SysRoot) { 1872 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain); 1873 if (A) 1874 return A->getValue(); 1875 1876 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX. 1877 // GCC_INSTALL_PREFIX specifies the gcc installation for the default 1878 // sysroot and is likely not valid with a different sysroot. 1879 if (!SysRoot.empty()) 1880 return ""; 1881 1882 return GCC_INSTALL_PREFIX; 1883 } 1884 1885 /// Initialize a GCCInstallationDetector from the driver. 1886 /// 1887 /// This performs all of the autodetection and sets up the various paths. 1888 /// Once constructed, a GCCInstallationDetector is essentially immutable. 1889 /// 1890 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and 1891 /// should instead pull the target out of the driver. This is currently 1892 /// necessary because the driver doesn't store the final version of the target 1893 /// triple. 1894 void Generic_GCC::GCCInstallationDetector::init( 1895 const llvm::Triple &TargetTriple, const ArgList &Args, 1896 ArrayRef<std::string> ExtraTripleAliases) { 1897 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit() 1898 ? TargetTriple.get64BitArchVariant() 1899 : TargetTriple.get32BitArchVariant(); 1900 // The library directories which may contain GCC installations. 1901 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs; 1902 // The compatible GCC triples for this particular architecture. 1903 SmallVector<StringRef, 16> CandidateTripleAliases; 1904 SmallVector<StringRef, 16> CandidateBiarchTripleAliases; 1905 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs, 1906 CandidateTripleAliases, CandidateBiarchLibDirs, 1907 CandidateBiarchTripleAliases); 1908 1909 // Compute the set of prefixes for our search. 1910 SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(), 1911 D.PrefixDirs.end()); 1912 1913 StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot); 1914 if (GCCToolchainDir != "") { 1915 if (GCCToolchainDir.back() == '/') 1916 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the / 1917 1918 Prefixes.push_back(std::string(GCCToolchainDir)); 1919 } else { 1920 // If we have a SysRoot, try that first. 1921 if (!D.SysRoot.empty()) { 1922 Prefixes.push_back(D.SysRoot); 1923 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 1924 } 1925 1926 // Then look for gcc installed alongside clang. 1927 Prefixes.push_back(D.InstalledDir + "/.."); 1928 1929 // Next, look for prefix(es) that correspond to distribution-supplied gcc 1930 // installations. 1931 if (D.SysRoot.empty()) { 1932 // Typically /usr. 1933 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 1934 } 1935 } 1936 1937 // Try to respect gcc-config on Gentoo. However, do that only 1938 // if --gcc-toolchain is not provided or equal to the Gentoo install 1939 // in /usr. This avoids accidentally enforcing the system GCC version 1940 // when using a custom toolchain. 1941 if (GCCToolchainDir == "" || GCCToolchainDir == D.SysRoot + "/usr") { 1942 SmallVector<StringRef, 16> GentooTestTriples; 1943 // Try to match an exact triple as target triple first. 1944 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for 1945 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu" 1946 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching 1947 // triple x86_64-gentoo-linux-gnu is present. 1948 GentooTestTriples.push_back(TargetTriple.str()); 1949 // Check rest of triples. 1950 GentooTestTriples.append(ExtraTripleAliases.begin(), 1951 ExtraTripleAliases.end()); 1952 GentooTestTriples.append(CandidateTripleAliases.begin(), 1953 CandidateTripleAliases.end()); 1954 if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples, 1955 CandidateBiarchTripleAliases)) 1956 return; 1957 } 1958 1959 // Loop over the various components which exist and select the best GCC 1960 // installation available. GCC installs are ranked by version number. 1961 Version = GCCVersion::Parse("0.0.0"); 1962 for (const std::string &Prefix : Prefixes) { 1963 auto &VFS = D.getVFS(); 1964 if (!VFS.exists(Prefix)) 1965 continue; 1966 for (StringRef Suffix : CandidateLibDirs) { 1967 const std::string LibDir = Prefix + Suffix.str(); 1968 if (!VFS.exists(LibDir)) 1969 continue; 1970 // Maybe filter out <libdir>/gcc and <libdir>/gcc-cross. 1971 bool GCCDirExists = VFS.exists(LibDir + "/gcc"); 1972 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross"); 1973 // Try to match the exact target triple first. 1974 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, TargetTriple.str(), 1975 false, GCCDirExists, GCCCrossDirExists); 1976 // Try rest of possible triples. 1977 for (StringRef Candidate : ExtraTripleAliases) // Try these first. 1978 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, false, 1979 GCCDirExists, GCCCrossDirExists); 1980 for (StringRef Candidate : CandidateTripleAliases) 1981 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, false, 1982 GCCDirExists, GCCCrossDirExists); 1983 } 1984 for (StringRef Suffix : CandidateBiarchLibDirs) { 1985 const std::string LibDir = Prefix + Suffix.str(); 1986 if (!VFS.exists(LibDir)) 1987 continue; 1988 bool GCCDirExists = VFS.exists(LibDir + "/gcc"); 1989 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross"); 1990 for (StringRef Candidate : CandidateBiarchTripleAliases) 1991 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, true, 1992 GCCDirExists, GCCCrossDirExists); 1993 } 1994 } 1995 } 1996 1997 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const { 1998 for (const auto &InstallPath : CandidateGCCInstallPaths) 1999 OS << "Found candidate GCC installation: " << InstallPath << "\n"; 2000 2001 if (!GCCInstallPath.empty()) 2002 OS << "Selected GCC installation: " << GCCInstallPath << "\n"; 2003 2004 for (const auto &Multilib : Multilibs) 2005 OS << "Candidate multilib: " << Multilib << "\n"; 2006 2007 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault()) 2008 OS << "Selected multilib: " << SelectedMultilib << "\n"; 2009 } 2010 2011 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const { 2012 if (BiarchSibling.hasValue()) { 2013 M = BiarchSibling.getValue(); 2014 return true; 2015 } 2016 return false; 2017 } 2018 2019 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes( 2020 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes, 2021 StringRef SysRoot) { 2022 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 2023 // Solaris is a special case. 2024 // The GCC installation is under 2025 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/ 2026 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with 2027 // /usr/gcc/<version> as a prefix. 2028 2029 std::string PrefixDir = SysRoot.str() + "/usr/gcc"; 2030 std::error_code EC; 2031 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC), 2032 LE; 2033 !EC && LI != LE; LI = LI.increment(EC)) { 2034 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2035 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 2036 2037 // Filter out obviously bad entries. 2038 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1)) 2039 continue; 2040 2041 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str(); 2042 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc"; 2043 if (!D.getVFS().exists(CandidateLibPath)) 2044 continue; 2045 2046 Prefixes.push_back(CandidatePrefix); 2047 } 2048 return; 2049 } 2050 2051 // Non-Solaris is much simpler - most systems just go with "/usr". 2052 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux) { 2053 // Yet, still look for RHEL devtoolsets. 2054 Prefixes.push_back("/opt/rh/devtoolset-10/root/usr"); 2055 Prefixes.push_back("/opt/rh/devtoolset-9/root/usr"); 2056 Prefixes.push_back("/opt/rh/devtoolset-8/root/usr"); 2057 Prefixes.push_back("/opt/rh/devtoolset-7/root/usr"); 2058 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr"); 2059 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr"); 2060 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr"); 2061 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr"); 2062 } 2063 Prefixes.push_back(SysRoot.str() + "/usr"); 2064 } 2065 2066 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples( 2067 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple, 2068 SmallVectorImpl<StringRef> &LibDirs, 2069 SmallVectorImpl<StringRef> &TripleAliases, 2070 SmallVectorImpl<StringRef> &BiarchLibDirs, 2071 SmallVectorImpl<StringRef> &BiarchTripleAliases) { 2072 // Declare a bunch of static data sets that we'll select between below. These 2073 // are specifically designed to always refer to string literals to avoid any 2074 // lifetime or initialization issues. 2075 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"}; 2076 static const char *const AArch64Triples[] = { 2077 "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-redhat-linux", 2078 "aarch64-suse-linux", "aarch64-linux-android"}; 2079 static const char *const AArch64beLibDirs[] = {"/lib"}; 2080 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu", 2081 "aarch64_be-linux-gnu"}; 2082 2083 static const char *const ARMLibDirs[] = {"/lib"}; 2084 static const char *const ARMTriples[] = {"arm-linux-gnueabi", 2085 "arm-linux-androideabi"}; 2086 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf", 2087 "armv7hl-redhat-linux-gnueabi", 2088 "armv6hl-suse-linux-gnueabi", 2089 "armv7hl-suse-linux-gnueabi"}; 2090 static const char *const ARMebLibDirs[] = {"/lib"}; 2091 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi", 2092 "armeb-linux-androideabi"}; 2093 static const char *const ARMebHFTriples[] = { 2094 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"}; 2095 2096 static const char *const AVRLibDirs[] = {"/lib"}; 2097 static const char *const AVRTriples[] = {"avr"}; 2098 2099 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"}; 2100 static const char *const X86_64Triples[] = { 2101 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu", 2102 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E", 2103 "x86_64-redhat-linux", "x86_64-suse-linux", 2104 "x86_64-manbo-linux-gnu", "x86_64-linux-gnu", 2105 "x86_64-slackware-linux", "x86_64-unknown-linux", 2106 "x86_64-amazon-linux", "x86_64-linux-android"}; 2107 static const char *const X32LibDirs[] = {"/libx32"}; 2108 static const char *const X86LibDirs[] = {"/lib32", "/lib"}; 2109 static const char *const X86Triples[] = { 2110 "i686-linux-gnu", "i686-pc-linux-gnu", "i486-linux-gnu", 2111 "i386-linux-gnu", "i386-redhat-linux6E", "i686-redhat-linux", 2112 "i586-redhat-linux", "i386-redhat-linux", "i586-suse-linux", 2113 "i486-slackware-linux", "i686-montavista-linux", "i586-linux-gnu", 2114 "i686-linux-android", "i386-gnu", "i486-gnu", 2115 "i586-gnu", "i686-gnu"}; 2116 2117 static const char *const MIPSLibDirs[] = {"/lib"}; 2118 static const char *const MIPSTriples[] = { 2119 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu", 2120 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"}; 2121 static const char *const MIPSELLibDirs[] = {"/lib"}; 2122 static const char *const MIPSELTriples[] = { 2123 "mipsel-linux-gnu", "mips-img-linux-gnu", "mipsisa32r6el-linux-gnu", 2124 "mipsel-linux-android"}; 2125 2126 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"}; 2127 static const char *const MIPS64Triples[] = { 2128 "mips64-linux-gnu", "mips-mti-linux-gnu", 2129 "mips-img-linux-gnu", "mips64-linux-gnuabi64", 2130 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"}; 2131 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"}; 2132 static const char *const MIPS64ELTriples[] = { 2133 "mips64el-linux-gnu", "mips-mti-linux-gnu", 2134 "mips-img-linux-gnu", "mips64el-linux-gnuabi64", 2135 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64", 2136 "mips64el-linux-android"}; 2137 2138 static const char *const MIPSN32LibDirs[] = {"/lib32"}; 2139 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32", 2140 "mipsisa64r6-linux-gnuabin32"}; 2141 static const char *const MIPSN32ELLibDirs[] = {"/lib32"}; 2142 static const char *const MIPSN32ELTriples[] = { 2143 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"}; 2144 2145 static const char *const MSP430LibDirs[] = {"/lib"}; 2146 static const char *const MSP430Triples[] = {"msp430-elf"}; 2147 2148 static const char *const PPCLibDirs[] = {"/lib32", "/lib"}; 2149 static const char *const PPCTriples[] = { 2150 "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe", 2151 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a 2152 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux". 2153 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"}; 2154 static const char *const PPCLELibDirs[] = {"/lib32", "/lib"}; 2155 static const char *const PPCLETriples[] = {"powerpcle-linux-gnu", 2156 "powerpcle-unknown-linux-gnu", 2157 "powerpcle-linux-musl"}; 2158 2159 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"}; 2160 static const char *const PPC64Triples[] = { 2161 "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu", 2162 "powerpc64-suse-linux", "ppc64-redhat-linux"}; 2163 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"}; 2164 static const char *const PPC64LETriples[] = { 2165 "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu", 2166 "powerpc64le-none-linux-gnu", "powerpc64le-suse-linux", 2167 "ppc64le-redhat-linux"}; 2168 2169 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"}; 2170 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu", 2171 "riscv32-linux-gnu", 2172 "riscv32-unknown-elf"}; 2173 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"}; 2174 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu", 2175 "riscv64-linux-gnu", 2176 "riscv64-unknown-elf", 2177 "riscv64-redhat-linux", 2178 "riscv64-suse-linux"}; 2179 2180 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"}; 2181 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu", 2182 "sparcv8-linux-gnu"}; 2183 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"}; 2184 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu", 2185 "sparcv9-linux-gnu"}; 2186 2187 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"}; 2188 static const char *const SystemZTriples[] = { 2189 "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu", 2190 "s390x-suse-linux", "s390x-redhat-linux"}; 2191 2192 2193 using std::begin; 2194 using std::end; 2195 2196 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 2197 static const char *const SolarisLibDirs[] = {"/lib"}; 2198 static const char *const SolarisSparcV8Triples[] = { 2199 "sparc-sun-solaris2.11", "sparc-sun-solaris2.12"}; 2200 static const char *const SolarisSparcV9Triples[] = { 2201 "sparcv9-sun-solaris2.11", "sparcv9-sun-solaris2.12"}; 2202 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11", 2203 "i386-pc-solaris2.12"}; 2204 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11", 2205 "x86_64-pc-solaris2.12"}; 2206 LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 2207 BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 2208 switch (TargetTriple.getArch()) { 2209 case llvm::Triple::x86: 2210 TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples)); 2211 BiarchTripleAliases.append(begin(SolarisX86_64Triples), 2212 end(SolarisX86_64Triples)); 2213 break; 2214 case llvm::Triple::x86_64: 2215 TripleAliases.append(begin(SolarisX86_64Triples), 2216 end(SolarisX86_64Triples)); 2217 BiarchTripleAliases.append(begin(SolarisX86Triples), 2218 end(SolarisX86Triples)); 2219 break; 2220 case llvm::Triple::sparc: 2221 TripleAliases.append(begin(SolarisSparcV8Triples), 2222 end(SolarisSparcV8Triples)); 2223 BiarchTripleAliases.append(begin(SolarisSparcV9Triples), 2224 end(SolarisSparcV9Triples)); 2225 break; 2226 case llvm::Triple::sparcv9: 2227 TripleAliases.append(begin(SolarisSparcV9Triples), 2228 end(SolarisSparcV9Triples)); 2229 BiarchTripleAliases.append(begin(SolarisSparcV8Triples), 2230 end(SolarisSparcV8Triples)); 2231 break; 2232 default: 2233 break; 2234 } 2235 return; 2236 } 2237 2238 // Android targets should not use GNU/Linux tools or libraries. 2239 if (TargetTriple.isAndroid()) { 2240 static const char *const AArch64AndroidTriples[] = { 2241 "aarch64-linux-android"}; 2242 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"}; 2243 static const char *const MIPSELAndroidTriples[] = {"mipsel-linux-android"}; 2244 static const char *const MIPS64ELAndroidTriples[] = { 2245 "mips64el-linux-android"}; 2246 static const char *const X86AndroidTriples[] = {"i686-linux-android"}; 2247 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"}; 2248 2249 switch (TargetTriple.getArch()) { 2250 case llvm::Triple::aarch64: 2251 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2252 TripleAliases.append(begin(AArch64AndroidTriples), 2253 end(AArch64AndroidTriples)); 2254 break; 2255 case llvm::Triple::arm: 2256 case llvm::Triple::thumb: 2257 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2258 TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples)); 2259 break; 2260 case llvm::Triple::mipsel: 2261 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2262 TripleAliases.append(begin(MIPSELAndroidTriples), 2263 end(MIPSELAndroidTriples)); 2264 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2265 BiarchTripleAliases.append(begin(MIPS64ELAndroidTriples), 2266 end(MIPS64ELAndroidTriples)); 2267 break; 2268 case llvm::Triple::mips64el: 2269 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2270 TripleAliases.append(begin(MIPS64ELAndroidTriples), 2271 end(MIPS64ELAndroidTriples)); 2272 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2273 BiarchTripleAliases.append(begin(MIPSELAndroidTriples), 2274 end(MIPSELAndroidTriples)); 2275 break; 2276 case llvm::Triple::x86_64: 2277 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2278 TripleAliases.append(begin(X86_64AndroidTriples), 2279 end(X86_64AndroidTriples)); 2280 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2281 BiarchTripleAliases.append(begin(X86AndroidTriples), 2282 end(X86AndroidTriples)); 2283 break; 2284 case llvm::Triple::x86: 2285 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2286 TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples)); 2287 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2288 BiarchTripleAliases.append(begin(X86_64AndroidTriples), 2289 end(X86_64AndroidTriples)); 2290 break; 2291 default: 2292 break; 2293 } 2294 2295 return; 2296 } 2297 2298 switch (TargetTriple.getArch()) { 2299 case llvm::Triple::aarch64: 2300 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2301 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2302 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2303 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2304 break; 2305 case llvm::Triple::aarch64_be: 2306 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2307 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2308 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2309 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2310 break; 2311 case llvm::Triple::arm: 2312 case llvm::Triple::thumb: 2313 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2314 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2315 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples)); 2316 } else { 2317 TripleAliases.append(begin(ARMTriples), end(ARMTriples)); 2318 } 2319 break; 2320 case llvm::Triple::armeb: 2321 case llvm::Triple::thumbeb: 2322 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs)); 2323 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2324 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples)); 2325 } else { 2326 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples)); 2327 } 2328 break; 2329 case llvm::Triple::avr: 2330 LibDirs.append(begin(AVRLibDirs), end(AVRLibDirs)); 2331 TripleAliases.append(begin(AVRTriples), end(AVRTriples)); 2332 break; 2333 case llvm::Triple::x86_64: 2334 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2335 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2336 // x32 is always available when x86_64 is available, so adding it as 2337 // secondary arch with x86_64 triples 2338 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32) { 2339 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2340 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2341 } else { 2342 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2343 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples)); 2344 } 2345 break; 2346 case llvm::Triple::x86: 2347 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2348 // MCU toolchain is 32 bit only and its triple alias is TargetTriple 2349 // itself, which will be appended below. 2350 if (!TargetTriple.isOSIAMCU()) { 2351 TripleAliases.append(begin(X86Triples), end(X86Triples)); 2352 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2353 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2354 } 2355 break; 2356 case llvm::Triple::mips: 2357 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2358 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2359 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2360 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2361 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs)); 2362 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples)); 2363 break; 2364 case llvm::Triple::mipsel: 2365 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2366 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2367 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2368 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2369 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2370 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs)); 2371 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples)); 2372 break; 2373 case llvm::Triple::mips64: 2374 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2375 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2376 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2377 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2378 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs)); 2379 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples)); 2380 break; 2381 case llvm::Triple::mips64el: 2382 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2383 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2384 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2385 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2386 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs)); 2387 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples)); 2388 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2389 break; 2390 case llvm::Triple::msp430: 2391 LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs)); 2392 TripleAliases.append(begin(MSP430Triples), end(MSP430Triples)); 2393 break; 2394 case llvm::Triple::ppc: 2395 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2396 TripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2397 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2398 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2399 break; 2400 case llvm::Triple::ppcle: 2401 LibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs)); 2402 TripleAliases.append(begin(PPCLETriples), end(PPCLETriples)); 2403 BiarchLibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs)); 2404 BiarchTripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples)); 2405 break; 2406 case llvm::Triple::ppc64: 2407 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2408 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2409 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2410 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2411 break; 2412 case llvm::Triple::ppc64le: 2413 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs)); 2414 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples)); 2415 BiarchLibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs)); 2416 BiarchTripleAliases.append(begin(PPCLETriples), end(PPCLETriples)); 2417 break; 2418 case llvm::Triple::riscv32: 2419 LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2420 TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples)); 2421 BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs)); 2422 BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples)); 2423 break; 2424 case llvm::Triple::riscv64: 2425 LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs)); 2426 TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples)); 2427 BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2428 BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples)); 2429 break; 2430 case llvm::Triple::sparc: 2431 case llvm::Triple::sparcel: 2432 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2433 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2434 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2435 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2436 break; 2437 case llvm::Triple::sparcv9: 2438 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2439 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2440 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2441 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2442 break; 2443 case llvm::Triple::systemz: 2444 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs)); 2445 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples)); 2446 break; 2447 default: 2448 // By default, just rely on the standard lib directories and the original 2449 // triple. 2450 break; 2451 } 2452 2453 // Always append the drivers target triple to the end, in case it doesn't 2454 // match any of our aliases. 2455 TripleAliases.push_back(TargetTriple.str()); 2456 2457 // Also include the multiarch variant if it's different. 2458 if (TargetTriple.str() != BiarchTriple.str()) 2459 BiarchTripleAliases.push_back(BiarchTriple.str()); 2460 } 2461 2462 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs( 2463 const llvm::Triple &TargetTriple, const ArgList &Args, 2464 StringRef Path, bool NeedsBiarchSuffix) { 2465 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 2466 DetectedMultilibs Detected; 2467 2468 // Android standalone toolchain could have multilibs for ARM and Thumb. 2469 // Debian mips multilibs behave more like the rest of the biarch ones, 2470 // so handle them there 2471 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) { 2472 // It should also work without multilibs in a simplified toolchain. 2473 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected); 2474 } else if (TargetTriple.isMIPS()) { 2475 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected)) 2476 return false; 2477 } else if (TargetTriple.isRISCV()) { 2478 findRISCVMultilibs(D, TargetTriple, Path, Args, Detected); 2479 } else if (isMSP430(TargetArch)) { 2480 findMSP430Multilibs(D, TargetTriple, Path, Args, Detected); 2481 } else if (TargetArch == llvm::Triple::avr) { 2482 // AVR has no multilibs. 2483 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args, 2484 NeedsBiarchSuffix, Detected)) { 2485 return false; 2486 } 2487 2488 Multilibs = Detected.Multilibs; 2489 SelectedMultilib = Detected.SelectedMultilib; 2490 BiarchSibling = Detected.BiarchSibling; 2491 2492 return true; 2493 } 2494 2495 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple( 2496 const llvm::Triple &TargetTriple, const ArgList &Args, 2497 const std::string &LibDir, StringRef CandidateTriple, 2498 bool NeedsBiarchSuffix, bool GCCDirExists, bool GCCCrossDirExists) { 2499 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 2500 // Locations relative to the system lib directory where GCC's triple-specific 2501 // directories might reside. 2502 struct GCCLibSuffix { 2503 // Path from system lib directory to GCC triple-specific directory. 2504 std::string LibSuffix; 2505 // Path from GCC triple-specific directory back to system lib directory. 2506 // This is one '..' component per component in LibSuffix. 2507 StringRef ReversePath; 2508 // Whether this library suffix is relevant for the triple. 2509 bool Active; 2510 } Suffixes[] = { 2511 // This is the normal place. 2512 {"gcc/" + CandidateTriple.str(), "../..", GCCDirExists}, 2513 2514 // Debian puts cross-compilers in gcc-cross. 2515 {"gcc-cross/" + CandidateTriple.str(), "../..", GCCCrossDirExists}, 2516 2517 // The Freescale PPC SDK has the gcc libraries in 2518 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do 2519 // this on Freescale triples, though, since some systems put a *lot* of 2520 // files in that location, not just GCC installation data. 2521 {CandidateTriple.str(), "..", 2522 TargetTriple.getVendor() == llvm::Triple::Freescale || 2523 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}, 2524 2525 // Natively multiarch systems sometimes put the GCC triple-specific 2526 // directory within their multiarch lib directory, resulting in the 2527 // triple appearing twice. 2528 {CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), "../../..", 2529 TargetTriple.getOS() != llvm::Triple::Solaris}, 2530 2531 // Deal with cases (on Ubuntu) where the system architecture could be i386 2532 // but the GCC target architecture could be (say) i686. 2533 // FIXME: It may be worthwhile to generalize this and look for a second 2534 // triple. 2535 {"i386-linux-gnu/gcc/" + CandidateTriple.str(), "../../..", 2536 (TargetArch == llvm::Triple::x86 && 2537 TargetTriple.getOS() != llvm::Triple::Solaris)}, 2538 {"i386-gnu/gcc/" + CandidateTriple.str(), "../../..", 2539 (TargetArch == llvm::Triple::x86 && 2540 TargetTriple.getOS() != llvm::Triple::Solaris)}}; 2541 2542 for (auto &Suffix : Suffixes) { 2543 if (!Suffix.Active) 2544 continue; 2545 2546 StringRef LibSuffix = Suffix.LibSuffix; 2547 std::error_code EC; 2548 for (llvm::vfs::directory_iterator 2549 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC), 2550 LE; 2551 !EC && LI != LE; LI = LI.increment(EC)) { 2552 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2553 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 2554 if (CandidateVersion.Major != -1) // Filter obviously bad entries. 2555 if (!CandidateGCCInstallPaths.insert(std::string(LI->path())).second) 2556 continue; // Saw this path before; no need to look at it again. 2557 if (CandidateVersion.isOlderThan(4, 1, 1)) 2558 continue; 2559 if (CandidateVersion <= Version) 2560 continue; 2561 2562 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(), 2563 NeedsBiarchSuffix)) 2564 continue; 2565 2566 Version = CandidateVersion; 2567 GCCTriple.setTriple(CandidateTriple); 2568 // FIXME: We hack together the directory name here instead of 2569 // using LI to ensure stable path separators across Windows and 2570 // Linux. 2571 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str(); 2572 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str(); 2573 IsValid = true; 2574 } 2575 } 2576 } 2577 2578 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs( 2579 const llvm::Triple &TargetTriple, const ArgList &Args, 2580 const SmallVectorImpl<StringRef> &CandidateTriples, 2581 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) { 2582 if (!D.getVFS().exists(D.SysRoot + GentooConfigDir)) 2583 return false; 2584 2585 for (StringRef CandidateTriple : CandidateTriples) { 2586 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple)) 2587 return true; 2588 } 2589 2590 for (StringRef CandidateTriple : CandidateBiarchTriples) { 2591 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true)) 2592 return true; 2593 } 2594 return false; 2595 } 2596 2597 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig( 2598 const llvm::Triple &TargetTriple, const ArgList &Args, 2599 StringRef CandidateTriple, bool NeedsBiarchSuffix) { 2600 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File = 2601 D.getVFS().getBufferForFile(D.SysRoot + GentooConfigDir + "/config-" + 2602 CandidateTriple.str()); 2603 if (File) { 2604 SmallVector<StringRef, 2> Lines; 2605 File.get()->getBuffer().split(Lines, "\n"); 2606 for (StringRef Line : Lines) { 2607 Line = Line.trim(); 2608 // CURRENT=triple-version 2609 if (!Line.consume_front("CURRENT=")) 2610 continue; 2611 // Process the config file pointed to by CURRENT. 2612 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile = 2613 D.getVFS().getBufferForFile(D.SysRoot + GentooConfigDir + "/" + 2614 Line.str()); 2615 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-'); 2616 // List of paths to scan for libraries. 2617 SmallVector<StringRef, 4> GentooScanPaths; 2618 // Scan the Config file to find installed GCC libraries path. 2619 // Typical content of the GCC config file: 2620 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/ 2621 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32" 2622 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man" 2623 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info" 2624 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4" 2625 // We are looking for the paths listed in LDPATH=... . 2626 if (ConfigFile) { 2627 SmallVector<StringRef, 2> ConfigLines; 2628 ConfigFile.get()->getBuffer().split(ConfigLines, "\n"); 2629 for (StringRef ConfLine : ConfigLines) { 2630 ConfLine = ConfLine.trim(); 2631 if (ConfLine.consume_front("LDPATH=")) { 2632 // Drop '"' from front and back if present. 2633 ConfLine.consume_back("\""); 2634 ConfLine.consume_front("\""); 2635 // Get all paths sperated by ':' 2636 ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false); 2637 } 2638 } 2639 } 2640 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}. 2641 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/" 2642 + ActiveVersion.second.str(); 2643 GentooScanPaths.push_back(StringRef(basePath)); 2644 2645 // Scan all paths for GCC libraries. 2646 for (const auto &GentooScanPath : GentooScanPaths) { 2647 std::string GentooPath = D.SysRoot + std::string(GentooScanPath); 2648 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) { 2649 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath, 2650 NeedsBiarchSuffix)) 2651 continue; 2652 2653 Version = GCCVersion::Parse(ActiveVersion.second); 2654 GCCInstallPath = GentooPath; 2655 GCCParentLibPath = GentooPath + std::string("/../../.."); 2656 GCCTriple.setTriple(ActiveVersion.first); 2657 IsValid = true; 2658 return true; 2659 } 2660 } 2661 } 2662 } 2663 2664 return false; 2665 } 2666 2667 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple, 2668 const ArgList &Args) 2669 : ToolChain(D, Triple, Args), GCCInstallation(D), 2670 CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args) { 2671 getProgramPaths().push_back(getDriver().getInstalledDir()); 2672 if (getDriver().getInstalledDir() != getDriver().Dir) 2673 getProgramPaths().push_back(getDriver().Dir); 2674 } 2675 2676 Generic_GCC::~Generic_GCC() {} 2677 2678 Tool *Generic_GCC::getTool(Action::ActionClass AC) const { 2679 switch (AC) { 2680 case Action::PreprocessJobClass: 2681 if (!Preprocess) 2682 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this)); 2683 return Preprocess.get(); 2684 case Action::CompileJobClass: 2685 if (!Compile) 2686 Compile.reset(new tools::gcc::Compiler(*this)); 2687 return Compile.get(); 2688 default: 2689 return ToolChain::getTool(AC); 2690 } 2691 } 2692 2693 Tool *Generic_GCC::buildAssembler() const { 2694 return new tools::gnutools::Assembler(*this); 2695 } 2696 2697 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); } 2698 2699 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const { 2700 // Print the information about how we detected the GCC installation. 2701 GCCInstallation.print(OS); 2702 CudaInstallation.print(OS); 2703 RocmInstallation.print(OS); 2704 } 2705 2706 bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const { 2707 switch (getArch()) { 2708 case llvm::Triple::aarch64: 2709 case llvm::Triple::ppc: 2710 case llvm::Triple::ppcle: 2711 case llvm::Triple::ppc64: 2712 case llvm::Triple::ppc64le: 2713 case llvm::Triple::x86_64: 2714 return true; 2715 default: 2716 return false; 2717 } 2718 } 2719 2720 bool Generic_GCC::isPICDefault() const { 2721 switch (getArch()) { 2722 case llvm::Triple::x86_64: 2723 return getTriple().isOSWindows(); 2724 case llvm::Triple::mips64: 2725 case llvm::Triple::mips64el: 2726 return true; 2727 default: 2728 return false; 2729 } 2730 } 2731 2732 bool Generic_GCC::isPIEDefault() const { return false; } 2733 2734 bool Generic_GCC::isPICDefaultForced() const { 2735 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows(); 2736 } 2737 2738 bool Generic_GCC::IsIntegratedAssemblerDefault() const { 2739 switch (getTriple().getArch()) { 2740 case llvm::Triple::x86: 2741 case llvm::Triple::x86_64: 2742 case llvm::Triple::aarch64: 2743 case llvm::Triple::aarch64_be: 2744 case llvm::Triple::arm: 2745 case llvm::Triple::armeb: 2746 case llvm::Triple::avr: 2747 case llvm::Triple::bpfel: 2748 case llvm::Triple::bpfeb: 2749 case llvm::Triple::thumb: 2750 case llvm::Triple::thumbeb: 2751 case llvm::Triple::ppc: 2752 case llvm::Triple::ppcle: 2753 case llvm::Triple::ppc64: 2754 case llvm::Triple::ppc64le: 2755 case llvm::Triple::riscv32: 2756 case llvm::Triple::riscv64: 2757 case llvm::Triple::systemz: 2758 case llvm::Triple::mips: 2759 case llvm::Triple::mipsel: 2760 case llvm::Triple::mips64: 2761 case llvm::Triple::mips64el: 2762 case llvm::Triple::msp430: 2763 return true; 2764 case llvm::Triple::sparc: 2765 case llvm::Triple::sparcel: 2766 case llvm::Triple::sparcv9: 2767 if (getTriple().isOSFreeBSD() || getTriple().isOSOpenBSD() || 2768 getTriple().isOSSolaris()) 2769 return true; 2770 return false; 2771 default: 2772 return false; 2773 } 2774 } 2775 2776 static void addMultilibsFilePaths(const Driver &D, const MultilibSet &Multilibs, 2777 const Multilib &Multilib, 2778 StringRef InstallPath, 2779 ToolChain::path_list &Paths) { 2780 if (const auto &PathsCallback = Multilibs.filePathsCallback()) 2781 for (const auto &Path : PathsCallback(Multilib)) 2782 addPathIfExists(D, InstallPath + Path, Paths); 2783 } 2784 2785 void Generic_GCC::PushPPaths(ToolChain::path_list &PPaths) { 2786 // Cross-compiling binutils and GCC installations (vanilla and openSUSE at 2787 // least) put various tools in a triple-prefixed directory off of the parent 2788 // of the GCC installation. We use the GCC triple here to ensure that we end 2789 // up with tools that support the same amount of cross compiling as the 2790 // detected GCC installation. For example, if we find a GCC installation 2791 // targeting x86_64, but it is a bi-arch GCC installation, it can also be 2792 // used to target i386. 2793 if (GCCInstallation.isValid()) { 2794 PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" + 2795 GCCInstallation.getTriple().str() + "/bin") 2796 .str()); 2797 } 2798 } 2799 2800 void Generic_GCC::AddMultilibPaths(const Driver &D, 2801 const std::string &SysRoot, 2802 const std::string &OSLibDir, 2803 const std::string &MultiarchTriple, 2804 path_list &Paths) { 2805 // Add the multilib suffixed paths where they are available. 2806 if (GCCInstallation.isValid()) { 2807 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2808 const std::string &LibPath = 2809 std::string(GCCInstallation.getParentLibPath()); 2810 2811 // Add toolchain / multilib specific file paths. 2812 addMultilibsFilePaths(D, Multilibs, SelectedMultilib, 2813 GCCInstallation.getInstallPath(), Paths); 2814 2815 // Sourcery CodeBench MIPS toolchain holds some libraries under 2816 // a biarch-like suffix of the GCC installation. 2817 addPathIfExists( 2818 D, GCCInstallation.getInstallPath() + SelectedMultilib.gccSuffix(), 2819 Paths); 2820 2821 // GCC cross compiling toolchains will install target libraries which ship 2822 // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as 2823 // any part of the GCC installation in 2824 // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat 2825 // debatable, but is the reality today. We need to search this tree even 2826 // when we have a sysroot somewhere else. It is the responsibility of 2827 // whomever is doing the cross build targeting a sysroot using a GCC 2828 // installation that is *not* within the system root to ensure two things: 2829 // 2830 // 1) Any DSOs that are linked in from this tree or from the install path 2831 // above must be present on the system root and found via an 2832 // appropriate rpath. 2833 // 2) There must not be libraries installed into 2834 // <prefix>/<triple>/<libdir> unless they should be preferred over 2835 // those within the system root. 2836 // 2837 // Note that this matches the GCC behavior. See the below comment for where 2838 // Clang diverges from GCC's behavior. 2839 addPathIfExists(D, 2840 LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir + 2841 SelectedMultilib.osSuffix(), 2842 Paths); 2843 2844 // If the GCC installation we found is inside of the sysroot, we want to 2845 // prefer libraries installed in the parent prefix of the GCC installation. 2846 // It is important to *not* use these paths when the GCC installation is 2847 // outside of the system root as that can pick up unintended libraries. 2848 // This usually happens when there is an external cross compiler on the 2849 // host system, and a more minimal sysroot available that is the target of 2850 // the cross. Note that GCC does include some of these directories in some 2851 // configurations but this seems somewhere between questionable and simply 2852 // a bug. 2853 if (StringRef(LibPath).startswith(SysRoot)) { 2854 addPathIfExists(D, LibPath + "/" + MultiarchTriple, Paths); 2855 addPathIfExists(D, LibPath + "/../" + OSLibDir, Paths); 2856 } 2857 } 2858 } 2859 2860 void Generic_GCC::AddMultiarchPaths(const Driver &D, 2861 const std::string &SysRoot, 2862 const std::string &OSLibDir, 2863 path_list &Paths) { 2864 // Try walking via the GCC triple path in case of biarch or multiarch GCC 2865 // installations with strange symlinks. 2866 if (GCCInstallation.isValid()) { 2867 addPathIfExists(D, 2868 SysRoot + "/usr/lib/" + GCCInstallation.getTriple().str() + 2869 "/../../" + OSLibDir, 2870 Paths); 2871 2872 // Add the 'other' biarch variant path 2873 Multilib BiarchSibling; 2874 if (GCCInstallation.getBiarchSibling(BiarchSibling)) { 2875 addPathIfExists( 2876 D, GCCInstallation.getInstallPath() + BiarchSibling.gccSuffix(), 2877 Paths); 2878 } 2879 2880 // See comments above on the multilib variant for details of why this is 2881 // included even from outside the sysroot. 2882 const std::string &LibPath = 2883 std::string(GCCInstallation.getParentLibPath()); 2884 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2885 const Multilib &Multilib = GCCInstallation.getMultilib(); 2886 addPathIfExists( 2887 D, LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(), 2888 Paths); 2889 2890 // See comments above on the multilib variant for details of why this is 2891 // only included from within the sysroot. 2892 if (StringRef(LibPath).startswith(SysRoot)) 2893 addPathIfExists(D, LibPath, Paths); 2894 } 2895 } 2896 2897 void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs, 2898 ArgStringList &CC1Args) const { 2899 // Add include directories specific to the selected multilib set and multilib. 2900 if (GCCInstallation.isValid()) { 2901 const auto &Callback = Multilibs.includeDirsCallback(); 2902 if (Callback) { 2903 for (const auto &Path : Callback(GCCInstallation.getMultilib())) 2904 addExternCSystemIncludeIfExists( 2905 DriverArgs, CC1Args, GCCInstallation.getInstallPath() + Path); 2906 } 2907 } 2908 } 2909 2910 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 2911 ArgStringList &CC1Args) const { 2912 if (DriverArgs.hasArg(options::OPT_nostdlibinc) || 2913 DriverArgs.hasArg(options::OPT_nostdincxx)) 2914 return; 2915 2916 switch (GetCXXStdlibType(DriverArgs)) { 2917 case ToolChain::CST_Libcxx: 2918 addLibCxxIncludePaths(DriverArgs, CC1Args); 2919 break; 2920 2921 case ToolChain::CST_Libstdcxx: 2922 addLibStdCxxIncludePaths(DriverArgs, CC1Args); 2923 break; 2924 } 2925 } 2926 2927 static std::string DetectLibcxxIncludePath(llvm::vfs::FileSystem &vfs, 2928 StringRef base) { 2929 std::error_code EC; 2930 int MaxVersion = 0; 2931 std::string MaxVersionString; 2932 for (llvm::vfs::directory_iterator LI = vfs.dir_begin(base, EC), LE; 2933 !EC && LI != LE; LI = LI.increment(EC)) { 2934 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2935 int Version; 2936 if (VersionText[0] == 'v' && 2937 !VersionText.slice(1, StringRef::npos).getAsInteger(10, Version)) { 2938 if (Version > MaxVersion) { 2939 MaxVersion = Version; 2940 MaxVersionString = std::string(VersionText); 2941 } 2942 } 2943 } 2944 return MaxVersion ? (base + "/" + MaxVersionString).str() : ""; 2945 } 2946 2947 void 2948 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 2949 llvm::opt::ArgStringList &CC1Args) const { 2950 auto AddIncludePath = [&](std::string Path) { 2951 std::string IncludePath = DetectLibcxxIncludePath(getVFS(), Path); 2952 if (IncludePath.empty() || !getVFS().exists(IncludePath)) 2953 return false; 2954 addSystemInclude(DriverArgs, CC1Args, IncludePath); 2955 return true; 2956 }; 2957 // Android never uses the libc++ headers installed alongside the toolchain, 2958 // which are generally incompatible with the NDK libraries anyway. 2959 if (!getTriple().isAndroid()) 2960 if (AddIncludePath(getDriver().Dir + "/../include/c++")) 2961 return; 2962 // If this is a development, non-installed, clang, libcxx will 2963 // not be found at ../include/c++ but it likely to be found at 2964 // one of the following two locations: 2965 std::string SysRoot = computeSysRoot(); 2966 if (AddIncludePath(SysRoot + "/usr/local/include/c++")) 2967 return; 2968 if (AddIncludePath(SysRoot + "/usr/include/c++")) 2969 return; 2970 } 2971 2972 /// Helper to add the variant paths of a libstdc++ installation. 2973 bool Generic_GCC::addLibStdCXXIncludePaths( 2974 Twine Base, Twine Suffix, StringRef GCCTriple, StringRef GCCMultiarchTriple, 2975 StringRef TargetMultiarchTriple, Twine IncludeSuffix, 2976 const ArgList &DriverArgs, ArgStringList &CC1Args) const { 2977 if (!getVFS().exists(Base + Suffix)) 2978 return false; 2979 2980 addSystemInclude(DriverArgs, CC1Args, Base + Suffix); 2981 2982 // The vanilla GCC layout of libstdc++ headers uses a triple subdirectory. If 2983 // that path exists or we have neither a GCC nor target multiarch triple, use 2984 // this vanilla search path. 2985 if ((GCCMultiarchTriple.empty() && TargetMultiarchTriple.empty()) || 2986 getVFS().exists(Base + Suffix + "/" + GCCTriple + IncludeSuffix)) { 2987 addSystemInclude(DriverArgs, CC1Args, 2988 Base + Suffix + "/" + GCCTriple + IncludeSuffix); 2989 } else { 2990 // Otherwise try to use multiarch naming schemes which have normalized the 2991 // triples and put the triple before the suffix. 2992 // 2993 // GCC surprisingly uses *both* the GCC triple with a multilib suffix and 2994 // the target triple, so we support that here. 2995 addSystemInclude(DriverArgs, CC1Args, 2996 Base + "/" + GCCMultiarchTriple + Suffix + IncludeSuffix); 2997 addSystemInclude(DriverArgs, CC1Args, 2998 Base + "/" + TargetMultiarchTriple + Suffix); 2999 } 3000 3001 addSystemInclude(DriverArgs, CC1Args, Base + Suffix + "/backward"); 3002 return true; 3003 } 3004 3005 bool 3006 Generic_GCC::addGCCLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 3007 llvm::opt::ArgStringList &CC1Args) const { 3008 // Use GCCInstallation to know where libstdc++ headers are installed. 3009 if (!GCCInstallation.isValid()) 3010 return false; 3011 3012 // By default, look for the C++ headers in an include directory adjacent to 3013 // the lib directory of the GCC installation. Note that this is expect to be 3014 // equivalent to '/usr/include/c++/X.Y' in almost all cases. 3015 StringRef LibDir = GCCInstallation.getParentLibPath(); 3016 StringRef InstallDir = GCCInstallation.getInstallPath(); 3017 StringRef TripleStr = GCCInstallation.getTriple().str(); 3018 const Multilib &Multilib = GCCInstallation.getMultilib(); 3019 const std::string GCCMultiarchTriple = getMultiarchTriple( 3020 getDriver(), GCCInstallation.getTriple(), getDriver().SysRoot); 3021 const std::string TargetMultiarchTriple = 3022 getMultiarchTriple(getDriver(), getTriple(), getDriver().SysRoot); 3023 const GCCVersion &Version = GCCInstallation.getVersion(); 3024 3025 // The primary search for libstdc++ supports multiarch variants. 3026 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include", 3027 "/c++/" + Version.Text, TripleStr, 3028 GCCMultiarchTriple, TargetMultiarchTriple, 3029 Multilib.includeSuffix(), DriverArgs, CC1Args)) 3030 return true; 3031 3032 // Otherwise, fall back on a bunch of options which don't use multiarch 3033 // layouts for simplicity. 3034 const std::string LibStdCXXIncludePathCandidates[] = { 3035 // Gentoo is weird and places its headers inside the GCC install, 3036 // so if the first attempt to find the headers fails, try these patterns. 3037 InstallDir.str() + "/include/g++-v" + Version.Text, 3038 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." + 3039 Version.MinorStr, 3040 InstallDir.str() + "/include/g++-v" + Version.MajorStr, 3041 }; 3042 3043 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) { 3044 if (addLibStdCXXIncludePaths(IncludePath, /*Suffix*/ "", TripleStr, 3045 /*GCCMultiarchTriple*/ "", 3046 /*TargetMultiarchTriple*/ "", 3047 Multilib.includeSuffix(), DriverArgs, CC1Args)) 3048 return true; 3049 } 3050 return false; 3051 } 3052 3053 void 3054 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 3055 llvm::opt::ArgStringList &CC1Args) const { 3056 addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args); 3057 } 3058 3059 llvm::opt::DerivedArgList * 3060 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef, 3061 Action::OffloadKind DeviceOffloadKind) const { 3062 3063 // If this tool chain is used for an OpenMP offloading device we have to make 3064 // sure we always generate a shared library regardless of the commands the 3065 // user passed to the host. This is required because the runtime library 3066 // is required to load the device image dynamically at run time. 3067 if (DeviceOffloadKind == Action::OFK_OpenMP) { 3068 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs()); 3069 const OptTable &Opts = getDriver().getOpts(); 3070 3071 // Request the shared library. Given that these options are decided 3072 // implicitly, they do not refer to any base argument. 3073 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared)); 3074 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC)); 3075 3076 // Filter all the arguments we don't care passing to the offloading 3077 // toolchain as they can mess up with the creation of a shared library. 3078 for (auto *A : Args) { 3079 switch ((options::ID)A->getOption().getID()) { 3080 default: 3081 DAL->append(A); 3082 break; 3083 case options::OPT_shared: 3084 case options::OPT_dynamic: 3085 case options::OPT_static: 3086 case options::OPT_fPIC: 3087 case options::OPT_fno_PIC: 3088 case options::OPT_fpic: 3089 case options::OPT_fno_pic: 3090 case options::OPT_fPIE: 3091 case options::OPT_fno_PIE: 3092 case options::OPT_fpie: 3093 case options::OPT_fno_pie: 3094 break; 3095 } 3096 } 3097 return DAL; 3098 } 3099 return nullptr; 3100 } 3101 3102 void Generic_ELF::anchor() {} 3103 3104 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs, 3105 ArgStringList &CC1Args, 3106 Action::OffloadKind) const { 3107 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array, 3108 options::OPT_fno_use_init_array, true)) 3109 CC1Args.push_back("-fno-use-init-array"); 3110 } 3111