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/CSKY.h" 12 #include "Arch/LoongArch.h" 13 #include "Arch/Mips.h" 14 #include "Arch/PPC.h" 15 #include "Arch/RISCV.h" 16 #include "Arch/Sparc.h" 17 #include "Arch/SystemZ.h" 18 #include "CommonArgs.h" 19 #include "Linux.h" 20 #include "clang/Config/config.h" // for GCC_INSTALL_PREFIX 21 #include "clang/Driver/Compilation.h" 22 #include "clang/Driver/Driver.h" 23 #include "clang/Driver/DriverDiagnostic.h" 24 #include "clang/Driver/MultilibBuilder.h" 25 #include "clang/Driver/Options.h" 26 #include "clang/Driver/Tool.h" 27 #include "clang/Driver/ToolChain.h" 28 #include "llvm/ADT/StringSet.h" 29 #include "llvm/ADT/Twine.h" 30 #include "llvm/Option/ArgList.h" 31 #include "llvm/Support/CodeGen.h" 32 #include "llvm/Support/Path.h" 33 #include "llvm/Support/VirtualFileSystem.h" 34 #include "llvm/TargetParser/TargetParser.h" 35 #include <system_error> 36 37 using namespace clang::driver; 38 using namespace clang::driver::toolchains; 39 using namespace clang; 40 using namespace llvm::opt; 41 42 using tools::addMultilibFlag; 43 using tools::addPathIfExists; 44 45 static bool forwardToGCC(const Option &O) { 46 // LinkerInput options have been forwarded. Don't duplicate. 47 if (O.hasFlag(options::LinkerInput)) 48 return false; 49 return O.matches(options::OPT_Link_Group) || O.hasFlag(options::LinkOption); 50 } 51 52 // Switch CPU names not recognized by GNU assembler to a close CPU that it does 53 // recognize, instead of a lower march from being picked in the absence of a cpu 54 // flag. 55 static void normalizeCPUNamesForAssembler(const ArgList &Args, 56 ArgStringList &CmdArgs) { 57 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) { 58 StringRef CPUArg(A->getValue()); 59 if (CPUArg.equals_insensitive("krait")) 60 CmdArgs.push_back("-mcpu=cortex-a15"); 61 else if (CPUArg.equals_insensitive("kryo")) 62 CmdArgs.push_back("-mcpu=cortex-a57"); 63 else 64 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ); 65 } 66 } 67 68 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA, 69 const InputInfo &Output, 70 const InputInfoList &Inputs, 71 const ArgList &Args, 72 const char *LinkingOutput) const { 73 const Driver &D = getToolChain().getDriver(); 74 ArgStringList CmdArgs; 75 76 for (const auto &A : Args) { 77 if (forwardToGCC(A->getOption())) { 78 // It is unfortunate that we have to claim here, as this means 79 // we will basically never report anything interesting for 80 // platforms using a generic gcc, even if we are just using gcc 81 // to get to the assembler. 82 A->claim(); 83 84 A->render(Args, CmdArgs); 85 } 86 } 87 88 RenderExtraToolArgs(JA, CmdArgs); 89 90 // If using a driver, force the arch. 91 if (getToolChain().getTriple().isOSDarwin()) { 92 CmdArgs.push_back("-arch"); 93 CmdArgs.push_back( 94 Args.MakeArgString(getToolChain().getDefaultUniversalArchName())); 95 } 96 97 // Try to force gcc to match the tool chain we want, if we recognize 98 // the arch. 99 // 100 // FIXME: The triple class should directly provide the information we want 101 // here. 102 switch (getToolChain().getArch()) { 103 default: 104 break; 105 case llvm::Triple::x86: 106 case llvm::Triple::ppc: 107 case llvm::Triple::ppcle: 108 CmdArgs.push_back("-m32"); 109 break; 110 case llvm::Triple::x86_64: 111 case llvm::Triple::ppc64: 112 case llvm::Triple::ppc64le: 113 CmdArgs.push_back("-m64"); 114 break; 115 case llvm::Triple::sparcel: 116 CmdArgs.push_back("-EL"); 117 break; 118 } 119 120 if (Output.isFilename()) { 121 CmdArgs.push_back("-o"); 122 CmdArgs.push_back(Output.getFilename()); 123 } else { 124 assert(Output.isNothing() && "Unexpected output"); 125 CmdArgs.push_back("-fsyntax-only"); 126 } 127 128 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 129 130 // Only pass -x if gcc will understand it; otherwise hope gcc 131 // understands the suffix correctly. The main use case this would go 132 // wrong in is for linker inputs if they happened to have an odd 133 // suffix; really the only way to get this to happen is a command 134 // like '-x foobar a.c' which will treat a.c like a linker input. 135 // 136 // FIXME: For the linker case specifically, can we safely convert 137 // inputs into '-Wl,' options? 138 for (const auto &II : Inputs) { 139 // Don't try to pass LLVM or AST inputs to a generic gcc. 140 if (types::isLLVMIR(II.getType())) 141 D.Diag(clang::diag::err_drv_no_linker_llvm_support) 142 << getToolChain().getTripleString(); 143 else if (II.getType() == types::TY_AST) 144 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString(); 145 else if (II.getType() == types::TY_ModuleFile) 146 D.Diag(diag::err_drv_no_module_support) 147 << getToolChain().getTripleString(); 148 149 if (types::canTypeBeUserSpecified(II.getType())) { 150 CmdArgs.push_back("-x"); 151 CmdArgs.push_back(types::getTypeName(II.getType())); 152 } 153 154 if (II.isFilename()) 155 CmdArgs.push_back(II.getFilename()); 156 else { 157 const Arg &A = II.getInputArg(); 158 159 // Reverse translate some rewritten options. 160 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) { 161 CmdArgs.push_back("-lstdc++"); 162 continue; 163 } 164 165 // Don't render as input, we need gcc to do the translations. 166 A.render(Args, CmdArgs); 167 } 168 } 169 170 const std::string &customGCCName = D.getCCCGenericGCCName(); 171 const char *GCCName; 172 if (!customGCCName.empty()) 173 GCCName = customGCCName.c_str(); 174 else if (D.CCCIsCXX()) { 175 GCCName = "g++"; 176 } else 177 GCCName = "gcc"; 178 179 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName)); 180 C.addCommand(std::make_unique<Command>(JA, *this, 181 ResponseFileSupport::AtFileCurCP(), 182 Exec, CmdArgs, Inputs, Output)); 183 } 184 185 void tools::gcc::Preprocessor::RenderExtraToolArgs( 186 const JobAction &JA, ArgStringList &CmdArgs) const { 187 CmdArgs.push_back("-E"); 188 } 189 190 void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA, 191 ArgStringList &CmdArgs) const { 192 const Driver &D = getToolChain().getDriver(); 193 194 switch (JA.getType()) { 195 // If -flto, etc. are present then make sure not to force assembly output. 196 case types::TY_LLVM_IR: 197 case types::TY_LTO_IR: 198 case types::TY_LLVM_BC: 199 case types::TY_LTO_BC: 200 CmdArgs.push_back("-c"); 201 break; 202 // We assume we've got an "integrated" assembler in that gcc will produce an 203 // object file itself. 204 case types::TY_Object: 205 CmdArgs.push_back("-c"); 206 break; 207 case types::TY_PP_Asm: 208 CmdArgs.push_back("-S"); 209 break; 210 case types::TY_Nothing: 211 CmdArgs.push_back("-fsyntax-only"); 212 break; 213 default: 214 D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType()); 215 } 216 } 217 218 void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA, 219 ArgStringList &CmdArgs) const { 220 // The types are (hopefully) good enough. 221 } 222 223 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) { 224 switch (T.getArch()) { 225 case llvm::Triple::x86: 226 if (T.isOSIAMCU()) 227 return "elf_iamcu"; 228 return "elf_i386"; 229 case llvm::Triple::aarch64: 230 return "aarch64linux"; 231 case llvm::Triple::aarch64_be: 232 return "aarch64linuxb"; 233 case llvm::Triple::arm: 234 case llvm::Triple::thumb: 235 case llvm::Triple::armeb: 236 case llvm::Triple::thumbeb: 237 return tools::arm::isARMBigEndian(T, Args) ? "armelfb_linux_eabi" 238 : "armelf_linux_eabi"; 239 case llvm::Triple::m68k: 240 return "m68kelf"; 241 case llvm::Triple::ppc: 242 if (T.isOSLinux()) 243 return "elf32ppclinux"; 244 return "elf32ppc"; 245 case llvm::Triple::ppcle: 246 if (T.isOSLinux()) 247 return "elf32lppclinux"; 248 return "elf32lppc"; 249 case llvm::Triple::ppc64: 250 return "elf64ppc"; 251 case llvm::Triple::ppc64le: 252 return "elf64lppc"; 253 case llvm::Triple::riscv32: 254 return "elf32lriscv"; 255 case llvm::Triple::riscv64: 256 return "elf64lriscv"; 257 case llvm::Triple::sparc: 258 case llvm::Triple::sparcel: 259 return "elf32_sparc"; 260 case llvm::Triple::sparcv9: 261 return "elf64_sparc"; 262 case llvm::Triple::loongarch32: 263 return "elf32loongarch"; 264 case llvm::Triple::loongarch64: 265 return "elf64loongarch"; 266 case llvm::Triple::mips: 267 return "elf32btsmip"; 268 case llvm::Triple::mipsel: 269 return "elf32ltsmip"; 270 case llvm::Triple::mips64: 271 if (tools::mips::hasMipsAbiArg(Args, "n32") || 272 T.getEnvironment() == llvm::Triple::GNUABIN32) 273 return "elf32btsmipn32"; 274 return "elf64btsmip"; 275 case llvm::Triple::mips64el: 276 if (tools::mips::hasMipsAbiArg(Args, "n32") || 277 T.getEnvironment() == llvm::Triple::GNUABIN32) 278 return "elf32ltsmipn32"; 279 return "elf64ltsmip"; 280 case llvm::Triple::systemz: 281 return "elf64_s390"; 282 case llvm::Triple::x86_64: 283 if (T.isX32()) 284 return "elf32_x86_64"; 285 return "elf_x86_64"; 286 case llvm::Triple::ve: 287 return "elf64ve"; 288 case llvm::Triple::csky: 289 return "cskyelf_linux"; 290 default: 291 return nullptr; 292 } 293 } 294 295 static bool getPIE(const ArgList &Args, const ToolChain &TC) { 296 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_static) || 297 Args.hasArg(options::OPT_r) || Args.hasArg(options::OPT_static_pie)) 298 return false; 299 300 Arg *A = Args.getLastArg(options::OPT_pie, options::OPT_no_pie, 301 options::OPT_nopie); 302 if (!A) 303 return TC.isPIEDefault(Args); 304 return A->getOption().matches(options::OPT_pie); 305 } 306 307 static bool getStaticPIE(const ArgList &Args, const ToolChain &TC) { 308 bool HasStaticPIE = Args.hasArg(options::OPT_static_pie); 309 // -no-pie is an alias for -nopie. So, handling -nopie takes care of 310 // -no-pie as well. 311 if (HasStaticPIE && Args.hasArg(options::OPT_nopie)) { 312 const Driver &D = TC.getDriver(); 313 const llvm::opt::OptTable &Opts = D.getOpts(); 314 StringRef StaticPIEName = Opts.getOptionName(options::OPT_static_pie); 315 StringRef NoPIEName = Opts.getOptionName(options::OPT_nopie); 316 D.Diag(diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName; 317 } 318 return HasStaticPIE; 319 } 320 321 static bool getStatic(const ArgList &Args) { 322 return Args.hasArg(options::OPT_static) && 323 !Args.hasArg(options::OPT_static_pie); 324 } 325 326 void tools::gnutools::StaticLibTool::ConstructJob( 327 Compilation &C, const JobAction &JA, const InputInfo &Output, 328 const InputInfoList &Inputs, const ArgList &Args, 329 const char *LinkingOutput) const { 330 const Driver &D = getToolChain().getDriver(); 331 332 // Silence warning for "clang -g foo.o -o foo" 333 Args.ClaimAllArgs(options::OPT_g_Group); 334 // and "clang -emit-llvm foo.o -o foo" 335 Args.ClaimAllArgs(options::OPT_emit_llvm); 336 // and for "clang -w foo.o -o foo". Other warning options are already 337 // handled somewhere else. 338 Args.ClaimAllArgs(options::OPT_w); 339 // Silence warnings when linking C code with a C++ '-stdlib' argument. 340 Args.ClaimAllArgs(options::OPT_stdlib_EQ); 341 342 // ar tool command "llvm-ar <options> <output_file> <input_files>". 343 ArgStringList CmdArgs; 344 // Create and insert file members with a deterministic index. 345 CmdArgs.push_back("rcsD"); 346 CmdArgs.push_back(Output.getFilename()); 347 348 for (const auto &II : Inputs) { 349 if (II.isFilename()) { 350 CmdArgs.push_back(II.getFilename()); 351 } 352 } 353 354 // Delete old output archive file if it already exists before generating a new 355 // archive file. 356 auto OutputFileName = Output.getFilename(); 357 if (Output.isFilename() && llvm::sys::fs::exists(OutputFileName)) { 358 if (std::error_code EC = llvm::sys::fs::remove(OutputFileName)) { 359 D.Diag(diag::err_drv_unable_to_remove_file) << EC.message(); 360 return; 361 } 362 } 363 364 const char *Exec = Args.MakeArgString(getToolChain().GetStaticLibToolPath()); 365 C.addCommand(std::make_unique<Command>(JA, *this, 366 ResponseFileSupport::AtFileCurCP(), 367 Exec, CmdArgs, Inputs, Output)); 368 } 369 370 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA, 371 const InputInfo &Output, 372 const InputInfoList &Inputs, 373 const ArgList &Args, 374 const char *LinkingOutput) const { 375 // FIXME: The Linker class constructor takes a ToolChain and not a 376 // Generic_ELF, so the static_cast might return a reference to a invalid 377 // instance (see PR45061). Ideally, the Linker constructor needs to take a 378 // Generic_ELF instead. 379 const toolchains::Generic_ELF &ToolChain = 380 static_cast<const toolchains::Generic_ELF &>(getToolChain()); 381 const Driver &D = ToolChain.getDriver(); 382 383 const llvm::Triple &Triple = getToolChain().getEffectiveTriple(); 384 385 const llvm::Triple::ArchType Arch = ToolChain.getArch(); 386 const bool isOHOSFamily = ToolChain.getTriple().isOHOSFamily(); 387 const bool isAndroid = ToolChain.getTriple().isAndroid(); 388 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU(); 389 const bool IsVE = ToolChain.getTriple().isVE(); 390 const bool IsPIE = getPIE(Args, ToolChain); 391 const bool IsStaticPIE = getStaticPIE(Args, ToolChain); 392 const bool IsStatic = getStatic(Args); 393 const bool HasCRTBeginEndFiles = 394 ToolChain.getTriple().hasEnvironment() || 395 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies); 396 397 ArgStringList CmdArgs; 398 399 // Silence warning for "clang -g foo.o -o foo" 400 Args.ClaimAllArgs(options::OPT_g_Group); 401 // and "clang -emit-llvm foo.o -o foo" 402 Args.ClaimAllArgs(options::OPT_emit_llvm); 403 // and for "clang -w foo.o -o foo". Other warning options are already 404 // handled somewhere else. 405 Args.ClaimAllArgs(options::OPT_w); 406 407 if (!D.SysRoot.empty()) 408 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 409 410 if (IsPIE) 411 CmdArgs.push_back("-pie"); 412 413 if (IsStaticPIE) { 414 CmdArgs.push_back("-static"); 415 CmdArgs.push_back("-pie"); 416 CmdArgs.push_back("--no-dynamic-linker"); 417 CmdArgs.push_back("-z"); 418 CmdArgs.push_back("text"); 419 } 420 421 if (Args.hasArg(options::OPT_rdynamic)) 422 CmdArgs.push_back("-export-dynamic"); 423 424 if (Args.hasArg(options::OPT_s)) 425 CmdArgs.push_back("-s"); 426 427 if (Triple.isARM() || Triple.isThumb()) { 428 bool IsBigEndian = arm::isARMBigEndian(Triple, Args); 429 if (IsBigEndian) 430 arm::appendBE8LinkFlag(Args, CmdArgs, Triple); 431 CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL"); 432 } else if (Triple.isAArch64()) { 433 CmdArgs.push_back(Arch == llvm::Triple::aarch64_be ? "-EB" : "-EL"); 434 } 435 436 // Most Android ARM64 targets should enable the linker fix for erratum 437 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag. 438 if (Arch == llvm::Triple::aarch64 && (isAndroid || isOHOSFamily)) { 439 std::string CPU = getCPUName(D, Args, Triple); 440 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53") 441 CmdArgs.push_back("--fix-cortex-a53-843419"); 442 } 443 444 ToolChain.addExtraOpts(CmdArgs); 445 446 CmdArgs.push_back("--eh-frame-hdr"); 447 448 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) { 449 CmdArgs.push_back("-m"); 450 CmdArgs.push_back(LDMOption); 451 } else { 452 D.Diag(diag::err_target_unknown_triple) << Triple.str(); 453 return; 454 } 455 if (Triple.isRISCV()) 456 CmdArgs.push_back("-X"); 457 458 if (Args.hasArg(options::OPT_shared)) 459 CmdArgs.push_back("-shared"); 460 461 if (IsStatic) { 462 CmdArgs.push_back("-static"); 463 } else { 464 if (Args.hasArg(options::OPT_rdynamic)) 465 CmdArgs.push_back("-export-dynamic"); 466 467 if (!Args.hasArg(options::OPT_shared) && !IsStaticPIE && 468 !Args.hasArg(options::OPT_r)) { 469 CmdArgs.push_back("-dynamic-linker"); 470 CmdArgs.push_back(Args.MakeArgString(Twine(D.DyldPrefix) + 471 ToolChain.getDynamicLinker(Args))); 472 } 473 } 474 475 CmdArgs.push_back("-o"); 476 CmdArgs.push_back(Output.getFilename()); 477 478 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles, 479 options::OPT_r)) { 480 if (!isAndroid && !IsIAMCU) { 481 const char *crt1 = nullptr; 482 if (!Args.hasArg(options::OPT_shared)) { 483 if (Args.hasArg(options::OPT_pg)) 484 crt1 = "gcrt1.o"; 485 else if (IsPIE) 486 crt1 = "Scrt1.o"; 487 else if (IsStaticPIE) 488 crt1 = "rcrt1.o"; 489 else 490 crt1 = "crt1.o"; 491 } 492 if (crt1) 493 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1))); 494 495 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o"))); 496 } 497 498 if (IsVE) { 499 CmdArgs.push_back("-z"); 500 CmdArgs.push_back("max-page-size=0x4000000"); 501 } 502 503 if (IsIAMCU) 504 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o"))); 505 else if (HasCRTBeginEndFiles) { 506 std::string P; 507 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT && 508 !isAndroid) { 509 std::string crtbegin = ToolChain.getCompilerRT(Args, "crtbegin", 510 ToolChain::FT_Object); 511 if (ToolChain.getVFS().exists(crtbegin)) 512 P = crtbegin; 513 } 514 if (P.empty()) { 515 const char *crtbegin; 516 if (Args.hasArg(options::OPT_shared)) 517 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o"; 518 else if (IsStatic) 519 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o"; 520 else if (IsPIE || IsStaticPIE) 521 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o"; 522 else 523 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o"; 524 P = ToolChain.GetFilePath(crtbegin); 525 } 526 CmdArgs.push_back(Args.MakeArgString(P)); 527 } 528 529 // Add crtfastmath.o if available and fast math is enabled. 530 ToolChain.addFastMathRuntimeIfAvailable(Args, CmdArgs); 531 } 532 533 Args.AddAllArgs(CmdArgs, options::OPT_L); 534 Args.AddAllArgs(CmdArgs, options::OPT_u); 535 536 ToolChain.AddFilePathLibArgs(Args, CmdArgs); 537 538 if (D.isUsingLTO()) { 539 assert(!Inputs.empty() && "Must have at least one input."); 540 addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs[0], 541 D.getLTOMode() == LTOK_Thin); 542 } 543 544 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle)) 545 CmdArgs.push_back("--no-demangle"); 546 547 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs); 548 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs); 549 addLinkerCompressDebugSectionsOption(ToolChain, Args, CmdArgs); 550 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA); 551 552 addHIPRuntimeLibArgs(ToolChain, Args, CmdArgs); 553 554 // The profile runtime also needs access to system libraries. 555 getToolChain().addProfileRTLibs(Args, CmdArgs); 556 557 if (D.CCCIsCXX() && 558 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs, 559 options::OPT_r)) { 560 if (ToolChain.ShouldLinkCXXStdlib(Args)) { 561 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) && 562 !Args.hasArg(options::OPT_static); 563 if (OnlyLibstdcxxStatic) 564 CmdArgs.push_back("-Bstatic"); 565 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs); 566 if (OnlyLibstdcxxStatic) 567 CmdArgs.push_back("-Bdynamic"); 568 } 569 CmdArgs.push_back("-lm"); 570 } 571 572 // Silence warnings when linking C code with a C++ '-stdlib' argument. 573 Args.ClaimAllArgs(options::OPT_stdlib_EQ); 574 575 // Additional linker set-up and flags for Fortran. This is required in order 576 // to generate executables. As Fortran runtime depends on the C runtime, 577 // these dependencies need to be listed before the C runtime below (i.e. 578 // AddRuntTimeLibs). 579 if (D.IsFlangMode()) { 580 addFortranRuntimeLibraryPath(ToolChain, Args, CmdArgs); 581 addFortranRuntimeLibs(ToolChain, CmdArgs); 582 CmdArgs.push_back("-lm"); 583 } 584 585 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_r)) { 586 if (!Args.hasArg(options::OPT_nodefaultlibs)) { 587 if (IsStatic || IsStaticPIE) 588 CmdArgs.push_back("--start-group"); 589 590 if (NeedsSanitizerDeps) 591 linkSanitizerRuntimeDeps(ToolChain, CmdArgs); 592 593 if (NeedsXRayDeps) 594 linkXRayRuntimeDeps(ToolChain, CmdArgs); 595 596 bool WantPthread = Args.hasArg(options::OPT_pthread) || 597 Args.hasArg(options::OPT_pthreads); 598 599 // Use the static OpenMP runtime with -static-openmp 600 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) && 601 !Args.hasArg(options::OPT_static); 602 603 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that 604 // require librt. Most modern Linux platforms do, but some may not. 605 if (addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP, 606 JA.isHostOffloading(Action::OFK_OpenMP), 607 /* GompNeedsRT= */ true)) 608 // OpenMP runtimes implies pthreads when using the GNU toolchain. 609 // FIXME: Does this really make sense for all GNU toolchains? 610 WantPthread = true; 611 612 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 613 614 // LLVM support for atomics on 32-bit SPARC V8+ is incomplete, so 615 // forcibly link with libatomic as a workaround. 616 // TODO: Issue #41880 and D118021. 617 if (getToolChain().getTriple().getArch() == llvm::Triple::sparc) { 618 CmdArgs.push_back("--push-state"); 619 CmdArgs.push_back("--as-needed"); 620 CmdArgs.push_back("-latomic"); 621 CmdArgs.push_back("--pop-state"); 622 } 623 624 // We don't need libpthread neither for bionic (Android) nor for musl, 625 // (used by OHOS as runtime library). 626 if (WantPthread && !isAndroid && !isOHOSFamily) 627 CmdArgs.push_back("-lpthread"); 628 629 if (Args.hasArg(options::OPT_fsplit_stack)) 630 CmdArgs.push_back("--wrap=pthread_create"); 631 632 if (!Args.hasArg(options::OPT_nolibc)) 633 CmdArgs.push_back("-lc"); 634 635 // Add IAMCU specific libs, if needed. 636 if (IsIAMCU) 637 CmdArgs.push_back("-lgloss"); 638 639 if (IsStatic || IsStaticPIE) 640 CmdArgs.push_back("--end-group"); 641 else 642 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 643 644 // Add IAMCU specific libs (outside the group), if needed. 645 if (IsIAMCU) { 646 CmdArgs.push_back("--as-needed"); 647 CmdArgs.push_back("-lsoftfp"); 648 CmdArgs.push_back("--no-as-needed"); 649 } 650 } 651 652 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) { 653 if (HasCRTBeginEndFiles) { 654 std::string P; 655 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT && 656 !isAndroid) { 657 std::string crtend = ToolChain.getCompilerRT(Args, "crtend", 658 ToolChain::FT_Object); 659 if (ToolChain.getVFS().exists(crtend)) 660 P = crtend; 661 } 662 if (P.empty()) { 663 const char *crtend; 664 if (Args.hasArg(options::OPT_shared)) 665 crtend = isAndroid ? "crtend_so.o" : "crtendS.o"; 666 else if (IsPIE || IsStaticPIE) 667 crtend = isAndroid ? "crtend_android.o" : "crtendS.o"; 668 else 669 crtend = isAndroid ? "crtend_android.o" : "crtend.o"; 670 P = ToolChain.GetFilePath(crtend); 671 } 672 CmdArgs.push_back(Args.MakeArgString(P)); 673 } 674 if (!isAndroid) 675 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o"))); 676 } 677 } 678 679 Args.AddAllArgs(CmdArgs, options::OPT_T); 680 681 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath()); 682 C.addCommand(std::make_unique<Command>(JA, *this, 683 ResponseFileSupport::AtFileCurCP(), 684 Exec, CmdArgs, Inputs, Output)); 685 } 686 687 void tools::gnutools::Assembler::ConstructJob(Compilation &C, 688 const JobAction &JA, 689 const InputInfo &Output, 690 const InputInfoList &Inputs, 691 const ArgList &Args, 692 const char *LinkingOutput) const { 693 const auto &D = getToolChain().getDriver(); 694 695 claimNoWarnArgs(Args); 696 697 ArgStringList CmdArgs; 698 699 llvm::Reloc::Model RelocationModel; 700 unsigned PICLevel; 701 bool IsPIE; 702 const char *DefaultAssembler = "as"; 703 std::tie(RelocationModel, PICLevel, IsPIE) = 704 ParsePICArgs(getToolChain(), Args); 705 706 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) { 707 if (A->getOption().getID() == options::OPT_gz) { 708 CmdArgs.push_back("--compress-debug-sections"); 709 } else { 710 StringRef Value = A->getValue(); 711 if (Value == "none" || Value == "zlib" || Value == "zstd") { 712 CmdArgs.push_back( 713 Args.MakeArgString("--compress-debug-sections=" + Twine(Value))); 714 } else { 715 D.Diag(diag::err_drv_unsupported_option_argument) 716 << A->getSpelling() << Value; 717 } 718 } 719 } 720 721 switch (getToolChain().getArch()) { 722 default: 723 break; 724 // Add --32/--64 to make sure we get the format we want. 725 // This is incomplete 726 case llvm::Triple::x86: 727 CmdArgs.push_back("--32"); 728 break; 729 case llvm::Triple::x86_64: 730 if (getToolChain().getTriple().isX32()) 731 CmdArgs.push_back("--x32"); 732 else 733 CmdArgs.push_back("--64"); 734 break; 735 case llvm::Triple::ppc: { 736 CmdArgs.push_back("-a32"); 737 CmdArgs.push_back("-mppc"); 738 CmdArgs.push_back("-mbig-endian"); 739 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 740 getCPUName(D, Args, getToolChain().getTriple()))); 741 break; 742 } 743 case llvm::Triple::ppcle: { 744 CmdArgs.push_back("-a32"); 745 CmdArgs.push_back("-mppc"); 746 CmdArgs.push_back("-mlittle-endian"); 747 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 748 getCPUName(D, Args, getToolChain().getTriple()))); 749 break; 750 } 751 case llvm::Triple::ppc64: { 752 CmdArgs.push_back("-a64"); 753 CmdArgs.push_back("-mppc64"); 754 CmdArgs.push_back("-mbig-endian"); 755 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 756 getCPUName(D, Args, getToolChain().getTriple()))); 757 break; 758 } 759 case llvm::Triple::ppc64le: { 760 CmdArgs.push_back("-a64"); 761 CmdArgs.push_back("-mppc64"); 762 CmdArgs.push_back("-mlittle-endian"); 763 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 764 getCPUName(D, Args, getToolChain().getTriple()))); 765 break; 766 } 767 case llvm::Triple::riscv32: 768 case llvm::Triple::riscv64: { 769 StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple()); 770 CmdArgs.push_back("-mabi"); 771 CmdArgs.push_back(ABIName.data()); 772 StringRef MArchName = riscv::getRISCVArch(Args, getToolChain().getTriple()); 773 CmdArgs.push_back("-march"); 774 CmdArgs.push_back(MArchName.data()); 775 if (!Args.hasFlag(options::OPT_mrelax, options::OPT_mno_relax, true)) 776 Args.addOptOutFlag(CmdArgs, options::OPT_mrelax, options::OPT_mno_relax); 777 break; 778 } 779 case llvm::Triple::sparc: 780 case llvm::Triple::sparcel: { 781 CmdArgs.push_back("-32"); 782 std::string CPU = getCPUName(D, Args, getToolChain().getTriple()); 783 CmdArgs.push_back( 784 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 785 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 786 break; 787 } 788 case llvm::Triple::sparcv9: { 789 CmdArgs.push_back("-64"); 790 std::string CPU = getCPUName(D, Args, getToolChain().getTriple()); 791 CmdArgs.push_back( 792 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 793 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 794 break; 795 } 796 case llvm::Triple::arm: 797 case llvm::Triple::armeb: 798 case llvm::Triple::thumb: 799 case llvm::Triple::thumbeb: { 800 const llvm::Triple &Triple2 = getToolChain().getTriple(); 801 CmdArgs.push_back(arm::isARMBigEndian(Triple2, Args) ? "-EB" : "-EL"); 802 switch (Triple2.getSubArch()) { 803 case llvm::Triple::ARMSubArch_v7: 804 CmdArgs.push_back("-mfpu=neon"); 805 break; 806 case llvm::Triple::ARMSubArch_v8: 807 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8"); 808 break; 809 default: 810 break; 811 } 812 813 switch (arm::getARMFloatABI(getToolChain(), Args)) { 814 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!"); 815 case arm::FloatABI::Soft: 816 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft")); 817 break; 818 case arm::FloatABI::SoftFP: 819 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp")); 820 break; 821 case arm::FloatABI::Hard: 822 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard")); 823 break; 824 } 825 826 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 827 normalizeCPUNamesForAssembler(Args, CmdArgs); 828 829 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ); 830 // The integrated assembler doesn't implement e_flags setting behavior for 831 // -meabi=gnu (gcc -mabi={apcs-gnu,atpcs} passes -meabi=gnu to gas). For 832 // compatibility we accept but warn. 833 if (Arg *A = Args.getLastArgNoClaim(options::OPT_mabi_EQ)) 834 A->ignoreTargetSpecific(); 835 break; 836 } 837 case llvm::Triple::aarch64: 838 case llvm::Triple::aarch64_be: { 839 CmdArgs.push_back( 840 getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL"); 841 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 842 normalizeCPUNamesForAssembler(Args, CmdArgs); 843 844 break; 845 } 846 // TODO: handle loongarch32. 847 case llvm::Triple::loongarch64: { 848 StringRef ABIName = 849 loongarch::getLoongArchABI(D, Args, getToolChain().getTriple()); 850 CmdArgs.push_back(Args.MakeArgString("-mabi=" + ABIName)); 851 break; 852 } 853 case llvm::Triple::mips: 854 case llvm::Triple::mipsel: 855 case llvm::Triple::mips64: 856 case llvm::Triple::mips64el: { 857 StringRef CPUName; 858 StringRef ABIName; 859 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName); 860 ABIName = mips::getGnuCompatibleMipsABIName(ABIName); 861 862 CmdArgs.push_back("-march"); 863 CmdArgs.push_back(CPUName.data()); 864 865 CmdArgs.push_back("-mabi"); 866 CmdArgs.push_back(ABIName.data()); 867 868 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE, 869 // or -mshared (not implemented) is in effect. 870 if (RelocationModel == llvm::Reloc::Static) 871 CmdArgs.push_back("-mno-shared"); 872 873 // LLVM doesn't support -mplt yet and acts as if it is always given. 874 // However, -mplt has no effect with the N64 ABI. 875 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls)) 876 CmdArgs.push_back("-call_nonpic"); 877 878 if (getToolChain().getTriple().isLittleEndian()) 879 CmdArgs.push_back("-EL"); 880 else 881 CmdArgs.push_back("-EB"); 882 883 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) { 884 if (StringRef(A->getValue()) == "2008") 885 CmdArgs.push_back(Args.MakeArgString("-mnan=2008")); 886 } 887 888 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default. 889 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx, 890 options::OPT_mfp64)) { 891 A->claim(); 892 A->render(Args, CmdArgs); 893 } else if (mips::shouldUseFPXX( 894 Args, getToolChain().getTriple(), CPUName, ABIName, 895 mips::getMipsFloatABI(getToolChain().getDriver(), Args, 896 getToolChain().getTriple()))) 897 CmdArgs.push_back("-mfpxx"); 898 899 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of 900 // -mno-mips16 is actually -no-mips16. 901 if (Arg *A = 902 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) { 903 if (A->getOption().matches(options::OPT_mips16)) { 904 A->claim(); 905 A->render(Args, CmdArgs); 906 } else { 907 A->claim(); 908 CmdArgs.push_back("-no-mips16"); 909 } 910 } 911 912 Args.AddLastArg(CmdArgs, options::OPT_mmicromips, 913 options::OPT_mno_micromips); 914 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp); 915 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2); 916 917 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) { 918 // Do not use AddLastArg because not all versions of MIPS assembler 919 // support -mmsa / -mno-msa options. 920 if (A->getOption().matches(options::OPT_mmsa)) 921 CmdArgs.push_back(Args.MakeArgString("-mmsa")); 922 } 923 924 Args.AddLastArg(CmdArgs, options::OPT_mhard_float, 925 options::OPT_msoft_float); 926 927 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float, 928 options::OPT_msingle_float); 929 930 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg, 931 options::OPT_mno_odd_spreg); 932 933 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 934 break; 935 } 936 case llvm::Triple::systemz: { 937 // Always pass an -march option, since our default of z10 is later 938 // than the GNU assembler's default. 939 std::string CPUName = systemz::getSystemZTargetCPU(Args); 940 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName)); 941 break; 942 } 943 case llvm::Triple::ve: 944 DefaultAssembler = "nas"; 945 } 946 947 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ, 948 options::OPT_fdebug_prefix_map_EQ)) { 949 StringRef Map = A->getValue(); 950 if (!Map.contains('=')) 951 D.Diag(diag::err_drv_invalid_argument_to_option) 952 << Map << A->getOption().getName(); 953 else { 954 CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map")); 955 CmdArgs.push_back(Args.MakeArgString(Map)); 956 } 957 A->claim(); 958 } 959 960 Args.AddAllArgs(CmdArgs, options::OPT_I); 961 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 962 963 CmdArgs.push_back("-o"); 964 CmdArgs.push_back(Output.getFilename()); 965 966 for (const auto &II : Inputs) 967 CmdArgs.push_back(II.getFilename()); 968 969 if (Arg *A = Args.getLastArg(options::OPT_g_Flag, options::OPT_gN_Group, 970 options::OPT_gdwarf_2, options::OPT_gdwarf_3, 971 options::OPT_gdwarf_4, options::OPT_gdwarf_5, 972 options::OPT_gdwarf)) 973 if (!A->getOption().matches(options::OPT_g0)) { 974 Args.AddLastArg(CmdArgs, options::OPT_g_Flag); 975 976 unsigned DwarfVersion = getDwarfVersion(getToolChain(), Args); 977 CmdArgs.push_back(Args.MakeArgString("-gdwarf-" + Twine(DwarfVersion))); 978 } 979 980 const char *Exec = 981 Args.MakeArgString(getToolChain().GetProgramPath(DefaultAssembler)); 982 C.addCommand(std::make_unique<Command>(JA, *this, 983 ResponseFileSupport::AtFileCurCP(), 984 Exec, CmdArgs, Inputs, Output)); 985 986 // Handle the debug info splitting at object creation time if we're 987 // creating an object. 988 // TODO: Currently only works on linux with newer objcopy. 989 if (Args.hasArg(options::OPT_gsplit_dwarf) && 990 getToolChain().getTriple().isOSLinux()) 991 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, 992 SplitDebugName(JA, Args, Inputs[0], Output)); 993 } 994 995 namespace { 996 // Filter to remove Multilibs that don't exist as a suffix to Path 997 class FilterNonExistent { 998 StringRef Base, File; 999 llvm::vfs::FileSystem &VFS; 1000 1001 public: 1002 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS) 1003 : Base(Base), File(File), VFS(VFS) {} 1004 bool operator()(const Multilib &M) { 1005 return !VFS.exists(Base + M.gccSuffix() + File); 1006 } 1007 }; 1008 } // end anonymous namespace 1009 1010 static bool isSoftFloatABI(const ArgList &Args) { 1011 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float, 1012 options::OPT_mfloat_abi_EQ); 1013 if (!A) 1014 return false; 1015 1016 return A->getOption().matches(options::OPT_msoft_float) || 1017 (A->getOption().matches(options::OPT_mfloat_abi_EQ) && 1018 A->getValue() == StringRef("soft")); 1019 } 1020 1021 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) { 1022 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb; 1023 } 1024 1025 static bool isMipsEL(llvm::Triple::ArchType Arch) { 1026 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el; 1027 } 1028 1029 static bool isMips16(const ArgList &Args) { 1030 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16); 1031 return A && A->getOption().matches(options::OPT_mips16); 1032 } 1033 1034 static bool isMicroMips(const ArgList &Args) { 1035 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips); 1036 return A && A->getOption().matches(options::OPT_mmicromips); 1037 } 1038 1039 static bool isMSP430(llvm::Triple::ArchType Arch) { 1040 return Arch == llvm::Triple::msp430; 1041 } 1042 1043 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags, 1044 FilterNonExistent &NonExistent, 1045 DetectedMultilibs &Result) { 1046 // Check for Code Sourcery toolchain multilibs 1047 MultilibSet CSMipsMultilibs; 1048 { 1049 auto MArchMips16 = MultilibBuilder("/mips16").flag("-m32").flag("-mips16"); 1050 1051 auto MArchMicroMips = 1052 MultilibBuilder("/micromips").flag("-m32").flag("-mmicromips"); 1053 1054 auto MArchDefault = MultilibBuilder("") 1055 .flag("-mips16", /*Disallow=*/true) 1056 .flag("-mmicromips", /*Disallow=*/true); 1057 1058 auto UCLibc = MultilibBuilder("/uclibc").flag("-muclibc"); 1059 1060 auto SoftFloat = MultilibBuilder("/soft-float").flag("-msoft-float"); 1061 1062 auto Nan2008 = MultilibBuilder("/nan2008").flag("-mnan=2008"); 1063 1064 auto DefaultFloat = MultilibBuilder("") 1065 .flag("-msoft-float", /*Disallow=*/true) 1066 .flag("-mnan=2008", /*Disallow=*/true); 1067 1068 auto BigEndian = 1069 MultilibBuilder("").flag("-EB").flag("-EL", /*Disallow=*/true); 1070 1071 auto LittleEndian = 1072 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true); 1073 1074 // Note that this one's osSuffix is "" 1075 auto MAbi64 = MultilibBuilder("") 1076 .gccSuffix("/64") 1077 .includeSuffix("/64") 1078 .flag("-mabi=n64") 1079 .flag("-mabi=n32", /*Disallow=*/true) 1080 .flag("-m32", /*Disallow=*/true); 1081 1082 CSMipsMultilibs = 1083 MultilibSetBuilder() 1084 .Either(MArchMips16, MArchMicroMips, MArchDefault) 1085 .Maybe(UCLibc) 1086 .Either(SoftFloat, Nan2008, DefaultFloat) 1087 .FilterOut("/micromips/nan2008") 1088 .FilterOut("/mips16/nan2008") 1089 .Either(BigEndian, LittleEndian) 1090 .Maybe(MAbi64) 1091 .FilterOut("/mips16.*/64") 1092 .FilterOut("/micromips.*/64") 1093 .makeMultilibSet() 1094 .FilterOut(NonExistent) 1095 .setIncludeDirsCallback([](const Multilib &M) { 1096 std::vector<std::string> Dirs({"/include"}); 1097 if (StringRef(M.includeSuffix()).startswith("/uclibc")) 1098 Dirs.push_back( 1099 "/../../../../mips-linux-gnu/libc/uclibc/usr/include"); 1100 else 1101 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include"); 1102 return Dirs; 1103 }); 1104 } 1105 1106 MultilibSet DebianMipsMultilibs; 1107 { 1108 MultilibBuilder MAbiN32 = 1109 MultilibBuilder().gccSuffix("/n32").includeSuffix("/n32").flag( 1110 "-mabi=n32"); 1111 1112 MultilibBuilder M64 = MultilibBuilder() 1113 .gccSuffix("/64") 1114 .includeSuffix("/64") 1115 .flag("-m64") 1116 .flag("-m32", /*Disallow=*/true) 1117 .flag("-mabi=n32", /*Disallow=*/true); 1118 1119 MultilibBuilder M32 = MultilibBuilder() 1120 .gccSuffix("/32") 1121 .flag("-m64", /*Disallow=*/true) 1122 .flag("-m32") 1123 .flag("-mabi=n32", /*Disallow=*/true); 1124 1125 DebianMipsMultilibs = MultilibSetBuilder() 1126 .Either(M32, M64, MAbiN32) 1127 .makeMultilibSet() 1128 .FilterOut(NonExistent); 1129 } 1130 1131 // Sort candidates. Toolchain that best meets the directories tree goes first. 1132 // Then select the first toolchains matches command line flags. 1133 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs}; 1134 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size()) 1135 std::iter_swap(Candidates, Candidates + 1); 1136 for (const MultilibSet *Candidate : Candidates) { 1137 if (Candidate->select(Flags, Result.SelectedMultilibs)) { 1138 if (Candidate == &DebianMipsMultilibs) 1139 Result.BiarchSibling = Multilib(); 1140 Result.Multilibs = *Candidate; 1141 return true; 1142 } 1143 } 1144 return false; 1145 } 1146 1147 static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path, 1148 const Multilib::flags_list &Flags, 1149 FilterNonExistent &NonExistent, 1150 DetectedMultilibs &Result) { 1151 1152 MultilibSet AndroidMipsMultilibs = 1153 MultilibSetBuilder() 1154 .Maybe(MultilibBuilder("/mips-r2", {}, {}).flag("-march=mips32r2")) 1155 .Maybe(MultilibBuilder("/mips-r6", {}, {}).flag("-march=mips32r6")) 1156 .makeMultilibSet() 1157 .FilterOut(NonExistent); 1158 1159 MultilibSet AndroidMipselMultilibs = 1160 MultilibSetBuilder() 1161 .Either(MultilibBuilder().flag("-march=mips32"), 1162 MultilibBuilder("/mips-r2", "", "/mips-r2") 1163 .flag("-march=mips32r2"), 1164 MultilibBuilder("/mips-r6", "", "/mips-r6") 1165 .flag("-march=mips32r6")) 1166 .makeMultilibSet() 1167 .FilterOut(NonExistent); 1168 1169 MultilibSet AndroidMips64elMultilibs = 1170 MultilibSetBuilder() 1171 .Either(MultilibBuilder().flag("-march=mips64r6"), 1172 MultilibBuilder("/32/mips-r1", "", "/mips-r1") 1173 .flag("-march=mips32"), 1174 MultilibBuilder("/32/mips-r2", "", "/mips-r2") 1175 .flag("-march=mips32r2"), 1176 MultilibBuilder("/32/mips-r6", "", "/mips-r6") 1177 .flag("-march=mips32r6")) 1178 .makeMultilibSet() 1179 .FilterOut(NonExistent); 1180 1181 MultilibSet *MS = &AndroidMipsMultilibs; 1182 if (VFS.exists(Path + "/mips-r6")) 1183 MS = &AndroidMipselMultilibs; 1184 else if (VFS.exists(Path + "/32")) 1185 MS = &AndroidMips64elMultilibs; 1186 if (MS->select(Flags, Result.SelectedMultilibs)) { 1187 Result.Multilibs = *MS; 1188 return true; 1189 } 1190 return false; 1191 } 1192 1193 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags, 1194 FilterNonExistent &NonExistent, 1195 DetectedMultilibs &Result) { 1196 // Musl toolchain multilibs 1197 MultilibSet MuslMipsMultilibs; 1198 { 1199 auto MArchMipsR2 = MultilibBuilder("") 1200 .osSuffix("/mips-r2-hard-musl") 1201 .flag("-EB") 1202 .flag("-EL", /*Disallow=*/true) 1203 .flag("-march=mips32r2"); 1204 1205 auto MArchMipselR2 = MultilibBuilder("/mipsel-r2-hard-musl") 1206 .flag("-EB", /*Disallow=*/true) 1207 .flag("-EL") 1208 .flag("-march=mips32r2"); 1209 1210 MuslMipsMultilibs = MultilibSetBuilder() 1211 .Either(MArchMipsR2, MArchMipselR2) 1212 .makeMultilibSet(); 1213 1214 // Specify the callback that computes the include directories. 1215 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) { 1216 return std::vector<std::string>( 1217 {"/../sysroot" + M.osSuffix() + "/usr/include"}); 1218 }); 1219 } 1220 if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilibs)) { 1221 Result.Multilibs = MuslMipsMultilibs; 1222 return true; 1223 } 1224 return false; 1225 } 1226 1227 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags, 1228 FilterNonExistent &NonExistent, 1229 DetectedMultilibs &Result) { 1230 // CodeScape MTI toolchain v1.2 and early. 1231 MultilibSet MtiMipsMultilibsV1; 1232 { 1233 auto MArchMips32 = MultilibBuilder("/mips32") 1234 .flag("-m32") 1235 .flag("-m64", /*Disallow=*/true) 1236 .flag("-mmicromips", /*Disallow=*/true) 1237 .flag("-march=mips32"); 1238 1239 auto MArchMicroMips = MultilibBuilder("/micromips") 1240 .flag("-m32") 1241 .flag("-m64", /*Disallow=*/true) 1242 .flag("-mmicromips"); 1243 1244 auto MArchMips64r2 = MultilibBuilder("/mips64r2") 1245 .flag("-m32", /*Disallow=*/true) 1246 .flag("-m64") 1247 .flag("-march=mips64r2"); 1248 1249 auto MArchMips64 = MultilibBuilder("/mips64") 1250 .flag("-m32", /*Disallow=*/true) 1251 .flag("-m64") 1252 .flag("-march=mips64r2", /*Disallow=*/true); 1253 1254 auto MArchDefault = MultilibBuilder("") 1255 .flag("-m32") 1256 .flag("-m64", /*Disallow=*/true) 1257 .flag("-mmicromips", /*Disallow=*/true) 1258 .flag("-march=mips32r2"); 1259 1260 auto Mips16 = MultilibBuilder("/mips16").flag("-mips16"); 1261 1262 auto UCLibc = MultilibBuilder("/uclibc").flag("-muclibc"); 1263 1264 auto MAbi64 = MultilibBuilder("/64") 1265 .flag("-mabi=n64") 1266 .flag("-mabi=n32", /*Disallow=*/true) 1267 .flag("-m32", /*Disallow=*/true); 1268 1269 auto BigEndian = 1270 MultilibBuilder("").flag("-EB").flag("-EL", /*Disallow=*/true); 1271 1272 auto LittleEndian = 1273 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true); 1274 1275 auto SoftFloat = MultilibBuilder("/sof").flag("-msoft-float"); 1276 1277 auto Nan2008 = MultilibBuilder("/nan2008").flag("-mnan=2008"); 1278 1279 MtiMipsMultilibsV1 = 1280 MultilibSetBuilder() 1281 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64, 1282 MArchDefault) 1283 .Maybe(UCLibc) 1284 .Maybe(Mips16) 1285 .FilterOut("/mips64/mips16") 1286 .FilterOut("/mips64r2/mips16") 1287 .FilterOut("/micromips/mips16") 1288 .Maybe(MAbi64) 1289 .FilterOut("/micromips/64") 1290 .FilterOut("/mips32/64") 1291 .FilterOut("^/64") 1292 .FilterOut("/mips16/64") 1293 .Either(BigEndian, LittleEndian) 1294 .Maybe(SoftFloat) 1295 .Maybe(Nan2008) 1296 .FilterOut(".*sof/nan2008") 1297 .makeMultilibSet() 1298 .FilterOut(NonExistent) 1299 .setIncludeDirsCallback([](const Multilib &M) { 1300 std::vector<std::string> Dirs({"/include"}); 1301 if (StringRef(M.includeSuffix()).startswith("/uclibc")) 1302 Dirs.push_back("/../../../../sysroot/uclibc/usr/include"); 1303 else 1304 Dirs.push_back("/../../../../sysroot/usr/include"); 1305 return Dirs; 1306 }); 1307 } 1308 1309 // CodeScape IMG toolchain starting from v1.3. 1310 MultilibSet MtiMipsMultilibsV2; 1311 { 1312 auto BeHard = MultilibBuilder("/mips-r2-hard") 1313 .flag("-EB") 1314 .flag("-msoft-float", /*Disallow=*/true) 1315 .flag("-mnan=2008", /*Disallow=*/true) 1316 .flag("-muclibc", /*Disallow=*/true); 1317 auto BeSoft = MultilibBuilder("/mips-r2-soft") 1318 .flag("-EB") 1319 .flag("-msoft-float") 1320 .flag("-mnan=2008", /*Disallow=*/true); 1321 auto ElHard = MultilibBuilder("/mipsel-r2-hard") 1322 .flag("-EL") 1323 .flag("-msoft-float", /*Disallow=*/true) 1324 .flag("-mnan=2008", /*Disallow=*/true) 1325 .flag("-muclibc", /*Disallow=*/true); 1326 auto ElSoft = MultilibBuilder("/mipsel-r2-soft") 1327 .flag("-EL") 1328 .flag("-msoft-float") 1329 .flag("-mnan=2008", /*Disallow=*/true) 1330 .flag("-mmicromips", /*Disallow=*/true); 1331 auto BeHardNan = MultilibBuilder("/mips-r2-hard-nan2008") 1332 .flag("-EB") 1333 .flag("-msoft-float", /*Disallow=*/true) 1334 .flag("-mnan=2008") 1335 .flag("-muclibc", /*Disallow=*/true); 1336 auto ElHardNan = MultilibBuilder("/mipsel-r2-hard-nan2008") 1337 .flag("-EL") 1338 .flag("-msoft-float", /*Disallow=*/true) 1339 .flag("-mnan=2008") 1340 .flag("-muclibc", /*Disallow=*/true) 1341 .flag("-mmicromips", /*Disallow=*/true); 1342 auto BeHardNanUclibc = MultilibBuilder("/mips-r2-hard-nan2008-uclibc") 1343 .flag("-EB") 1344 .flag("-msoft-float", /*Disallow=*/true) 1345 .flag("-mnan=2008") 1346 .flag("-muclibc"); 1347 auto ElHardNanUclibc = MultilibBuilder("/mipsel-r2-hard-nan2008-uclibc") 1348 .flag("-EL") 1349 .flag("-msoft-float", /*Disallow=*/true) 1350 .flag("-mnan=2008") 1351 .flag("-muclibc"); 1352 auto BeHardUclibc = MultilibBuilder("/mips-r2-hard-uclibc") 1353 .flag("-EB") 1354 .flag("-msoft-float", /*Disallow=*/true) 1355 .flag("-mnan=2008", /*Disallow=*/true) 1356 .flag("-muclibc"); 1357 auto ElHardUclibc = MultilibBuilder("/mipsel-r2-hard-uclibc") 1358 .flag("-EL") 1359 .flag("-msoft-float", /*Disallow=*/true) 1360 .flag("-mnan=2008", /*Disallow=*/true) 1361 .flag("-muclibc"); 1362 auto ElMicroHardNan = MultilibBuilder("/micromipsel-r2-hard-nan2008") 1363 .flag("-EL") 1364 .flag("-msoft-float", /*Disallow=*/true) 1365 .flag("-mnan=2008") 1366 .flag("-mmicromips"); 1367 auto ElMicroSoft = MultilibBuilder("/micromipsel-r2-soft") 1368 .flag("-EL") 1369 .flag("-msoft-float") 1370 .flag("-mnan=2008", /*Disallow=*/true) 1371 .flag("-mmicromips"); 1372 1373 auto O32 = MultilibBuilder("/lib") 1374 .osSuffix("") 1375 .flag("-mabi=n32", /*Disallow=*/true) 1376 .flag("-mabi=n64", /*Disallow=*/true); 1377 auto N32 = MultilibBuilder("/lib32") 1378 .osSuffix("") 1379 .flag("-mabi=n32") 1380 .flag("-mabi=n64", /*Disallow=*/true); 1381 auto N64 = MultilibBuilder("/lib64") 1382 .osSuffix("") 1383 .flag("-mabi=n32", /*Disallow=*/true) 1384 .flag("-mabi=n64"); 1385 1386 MtiMipsMultilibsV2 = 1387 MultilibSetBuilder() 1388 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan, 1389 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc, 1390 ElHardUclibc, ElMicroHardNan, ElMicroSoft}) 1391 .Either(O32, N32, N64) 1392 .makeMultilibSet() 1393 .FilterOut(NonExistent) 1394 .setIncludeDirsCallback([](const Multilib &M) { 1395 return std::vector<std::string>({"/../../../../sysroot" + 1396 M.includeSuffix() + 1397 "/../usr/include"}); 1398 }) 1399 .setFilePathsCallback([](const Multilib &M) { 1400 return std::vector<std::string>( 1401 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()}); 1402 }); 1403 } 1404 for (auto *Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) { 1405 if (Candidate->select(Flags, Result.SelectedMultilibs)) { 1406 Result.Multilibs = *Candidate; 1407 return true; 1408 } 1409 } 1410 return false; 1411 } 1412 1413 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags, 1414 FilterNonExistent &NonExistent, 1415 DetectedMultilibs &Result) { 1416 // CodeScape IMG toolchain v1.2 and early. 1417 MultilibSet ImgMultilibsV1; 1418 { 1419 auto Mips64r6 = MultilibBuilder("/mips64r6") 1420 .flag("-m64") 1421 .flag("-m32", /*Disallow=*/true); 1422 1423 auto LittleEndian = 1424 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true); 1425 1426 auto MAbi64 = MultilibBuilder("/64") 1427 .flag("-mabi=n64") 1428 .flag("-mabi=n32", /*Disallow=*/true) 1429 .flag("-m32", /*Disallow=*/true); 1430 1431 ImgMultilibsV1 = 1432 MultilibSetBuilder() 1433 .Maybe(Mips64r6) 1434 .Maybe(MAbi64) 1435 .Maybe(LittleEndian) 1436 .makeMultilibSet() 1437 .FilterOut(NonExistent) 1438 .setIncludeDirsCallback([](const Multilib &M) { 1439 return std::vector<std::string>( 1440 {"/include", "/../../../../sysroot/usr/include"}); 1441 }); 1442 } 1443 1444 // CodeScape IMG toolchain starting from v1.3. 1445 MultilibSet ImgMultilibsV2; 1446 { 1447 auto BeHard = MultilibBuilder("/mips-r6-hard") 1448 .flag("-EB") 1449 .flag("-msoft-float", /*Disallow=*/true) 1450 .flag("-mmicromips", /*Disallow=*/true); 1451 auto BeSoft = MultilibBuilder("/mips-r6-soft") 1452 .flag("-EB") 1453 .flag("-msoft-float") 1454 .flag("-mmicromips", /*Disallow=*/true); 1455 auto ElHard = MultilibBuilder("/mipsel-r6-hard") 1456 .flag("-EL") 1457 .flag("-msoft-float", /*Disallow=*/true) 1458 .flag("-mmicromips", /*Disallow=*/true); 1459 auto ElSoft = MultilibBuilder("/mipsel-r6-soft") 1460 .flag("-EL") 1461 .flag("-msoft-float") 1462 .flag("-mmicromips", /*Disallow=*/true); 1463 auto BeMicroHard = MultilibBuilder("/micromips-r6-hard") 1464 .flag("-EB") 1465 .flag("-msoft-float", /*Disallow=*/true) 1466 .flag("-mmicromips"); 1467 auto BeMicroSoft = MultilibBuilder("/micromips-r6-soft") 1468 .flag("-EB") 1469 .flag("-msoft-float") 1470 .flag("-mmicromips"); 1471 auto ElMicroHard = MultilibBuilder("/micromipsel-r6-hard") 1472 .flag("-EL") 1473 .flag("-msoft-float", /*Disallow=*/true) 1474 .flag("-mmicromips"); 1475 auto ElMicroSoft = MultilibBuilder("/micromipsel-r6-soft") 1476 .flag("-EL") 1477 .flag("-msoft-float") 1478 .flag("-mmicromips"); 1479 1480 auto O32 = MultilibBuilder("/lib") 1481 .osSuffix("") 1482 .flag("-mabi=n32", /*Disallow=*/true) 1483 .flag("-mabi=n64", /*Disallow=*/true); 1484 auto N32 = MultilibBuilder("/lib32") 1485 .osSuffix("") 1486 .flag("-mabi=n32") 1487 .flag("-mabi=n64", /*Disallow=*/true); 1488 auto N64 = MultilibBuilder("/lib64") 1489 .osSuffix("") 1490 .flag("-mabi=n32", /*Disallow=*/true) 1491 .flag("-mabi=n64"); 1492 1493 ImgMultilibsV2 = 1494 MultilibSetBuilder() 1495 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft, 1496 ElMicroHard, ElMicroSoft}) 1497 .Either(O32, N32, N64) 1498 .makeMultilibSet() 1499 .FilterOut(NonExistent) 1500 .setIncludeDirsCallback([](const Multilib &M) { 1501 return std::vector<std::string>({"/../../../../sysroot" + 1502 M.includeSuffix() + 1503 "/../usr/include"}); 1504 }) 1505 .setFilePathsCallback([](const Multilib &M) { 1506 return std::vector<std::string>( 1507 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()}); 1508 }); 1509 } 1510 for (auto *Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) { 1511 if (Candidate->select(Flags, Result.SelectedMultilibs)) { 1512 Result.Multilibs = *Candidate; 1513 return true; 1514 } 1515 } 1516 return false; 1517 } 1518 1519 bool clang::driver::findMIPSMultilibs(const Driver &D, 1520 const llvm::Triple &TargetTriple, 1521 StringRef Path, const ArgList &Args, 1522 DetectedMultilibs &Result) { 1523 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1524 1525 StringRef CPUName; 1526 StringRef ABIName; 1527 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName); 1528 1529 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 1530 1531 Multilib::flags_list Flags; 1532 addMultilibFlag(TargetTriple.isMIPS32(), "-m32", Flags); 1533 addMultilibFlag(TargetTriple.isMIPS64(), "-m64", Flags); 1534 addMultilibFlag(isMips16(Args), "-mips16", Flags); 1535 addMultilibFlag(CPUName == "mips32", "-march=mips32", Flags); 1536 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" || 1537 CPUName == "mips32r5" || CPUName == "p5600", 1538 "-march=mips32r2", Flags); 1539 addMultilibFlag(CPUName == "mips32r6", "-march=mips32r6", Flags); 1540 addMultilibFlag(CPUName == "mips64", "-march=mips64", Flags); 1541 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" || 1542 CPUName == "mips64r5" || CPUName == "octeon" || 1543 CPUName == "octeon+", 1544 "-march=mips64r2", Flags); 1545 addMultilibFlag(CPUName == "mips64r6", "-march=mips64r6", Flags); 1546 addMultilibFlag(isMicroMips(Args), "-mmicromips", Flags); 1547 addMultilibFlag(tools::mips::isUCLibc(Args), "-muclibc", Flags); 1548 addMultilibFlag(tools::mips::isNaN2008(D, Args, TargetTriple), "-mnan=2008", 1549 Flags); 1550 addMultilibFlag(ABIName == "n32", "-mabi=n32", Flags); 1551 addMultilibFlag(ABIName == "n64", "-mabi=n64", Flags); 1552 addMultilibFlag(isSoftFloatABI(Args), "-msoft-float", Flags); 1553 addMultilibFlag(!isSoftFloatABI(Args), "-mhard-float", Flags); 1554 addMultilibFlag(isMipsEL(TargetArch), "-EL", Flags); 1555 addMultilibFlag(!isMipsEL(TargetArch), "-EB", Flags); 1556 1557 if (TargetTriple.isAndroid()) 1558 return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent, 1559 Result); 1560 1561 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1562 TargetTriple.getOS() == llvm::Triple::Linux && 1563 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment) 1564 return findMipsMuslMultilibs(Flags, NonExistent, Result); 1565 1566 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1567 TargetTriple.getOS() == llvm::Triple::Linux && 1568 TargetTriple.isGNUEnvironment()) 1569 return findMipsMtiMultilibs(Flags, NonExistent, Result); 1570 1571 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies && 1572 TargetTriple.getOS() == llvm::Triple::Linux && 1573 TargetTriple.isGNUEnvironment()) 1574 return findMipsImgMultilibs(Flags, NonExistent, Result); 1575 1576 if (findMipsCsMultilibs(Flags, NonExistent, Result)) 1577 return true; 1578 1579 // Fallback to the regular toolchain-tree structure. 1580 Multilib Default; 1581 Result.Multilibs.push_back(Default); 1582 Result.Multilibs.FilterOut(NonExistent); 1583 1584 if (Result.Multilibs.select(Flags, Result.SelectedMultilibs)) { 1585 Result.BiarchSibling = Multilib(); 1586 return true; 1587 } 1588 1589 return false; 1590 } 1591 1592 static void findAndroidArmMultilibs(const Driver &D, 1593 const llvm::Triple &TargetTriple, 1594 StringRef Path, const ArgList &Args, 1595 DetectedMultilibs &Result) { 1596 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb. 1597 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1598 MultilibBuilder ArmV7Multilib = MultilibBuilder("/armv7-a") 1599 .flag("-march=armv7-a") 1600 .flag("-mthumb", /*Disallow=*/true); 1601 MultilibBuilder ThumbMultilib = MultilibBuilder("/thumb") 1602 .flag("-march=armv7-a", /*Disallow=*/true) 1603 .flag("-mthumb"); 1604 MultilibBuilder ArmV7ThumbMultilib = 1605 MultilibBuilder("/armv7-a/thumb").flag("-march=armv7-a").flag("-mthumb"); 1606 MultilibBuilder DefaultMultilib = 1607 MultilibBuilder("") 1608 .flag("-march=armv7-a", /*Disallow=*/true) 1609 .flag("-mthumb", /*Disallow=*/true); 1610 MultilibSet AndroidArmMultilibs = 1611 MultilibSetBuilder() 1612 .Either(ThumbMultilib, ArmV7Multilib, ArmV7ThumbMultilib, 1613 DefaultMultilib) 1614 .makeMultilibSet() 1615 .FilterOut(NonExistent); 1616 1617 Multilib::flags_list Flags; 1618 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ); 1619 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm; 1620 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb; 1621 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7; 1622 bool IsThumbMode = IsThumbArch || 1623 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) || 1624 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB); 1625 bool IsArmV7Mode = (IsArmArch || IsThumbArch) && 1626 (llvm::ARM::parseArchVersion(Arch) == 7 || 1627 (IsArmArch && Arch == "" && IsV7SubArch)); 1628 addMultilibFlag(IsArmV7Mode, "-march=armv7-a", Flags); 1629 addMultilibFlag(IsThumbMode, "-mthumb", Flags); 1630 1631 if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilibs)) 1632 Result.Multilibs = AndroidArmMultilibs; 1633 } 1634 1635 static bool findMSP430Multilibs(const Driver &D, 1636 const llvm::Triple &TargetTriple, 1637 StringRef Path, const ArgList &Args, 1638 DetectedMultilibs &Result) { 1639 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1640 MultilibBuilder WithoutExceptions = 1641 MultilibBuilder("/430").flag("-exceptions", /*Disallow=*/true); 1642 MultilibBuilder WithExceptions = 1643 MultilibBuilder("/430/exceptions").flag("-exceptions"); 1644 1645 // FIXME: when clang starts to support msp430x ISA additional logic 1646 // to select between multilib must be implemented 1647 // MultilibBuilder MSP430xMultilib = MultilibBuilder("/large"); 1648 1649 Result.Multilibs.push_back(WithoutExceptions.makeMultilib()); 1650 Result.Multilibs.push_back(WithExceptions.makeMultilib()); 1651 Result.Multilibs.FilterOut(NonExistent); 1652 1653 Multilib::flags_list Flags; 1654 addMultilibFlag(Args.hasFlag(options::OPT_fexceptions, 1655 options::OPT_fno_exceptions, false), 1656 "-exceptions", Flags); 1657 if (Result.Multilibs.select(Flags, Result.SelectedMultilibs)) 1658 return true; 1659 1660 return false; 1661 } 1662 1663 static void findCSKYMultilibs(const Driver &D, const llvm::Triple &TargetTriple, 1664 StringRef Path, const ArgList &Args, 1665 DetectedMultilibs &Result) { 1666 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1667 1668 tools::csky::FloatABI TheFloatABI = tools::csky::getCSKYFloatABI(D, Args); 1669 std::optional<llvm::StringRef> Res = 1670 tools::csky::getCSKYArchName(D, Args, TargetTriple); 1671 1672 if (!Res) 1673 return; 1674 auto ARCHName = *Res; 1675 1676 Multilib::flags_list Flags; 1677 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Hard, "-hard-fp", 1678 Flags); 1679 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::SoftFP, "-soft-fp", 1680 Flags); 1681 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Soft, "-soft", Flags); 1682 addMultilibFlag(ARCHName == "ck801", "-march=ck801", Flags); 1683 addMultilibFlag(ARCHName == "ck802", "-march=ck802", Flags); 1684 addMultilibFlag(ARCHName == "ck803", "-march=ck803", Flags); 1685 addMultilibFlag(ARCHName == "ck804", "-march=ck804", Flags); 1686 addMultilibFlag(ARCHName == "ck805", "-march=ck805", Flags); 1687 addMultilibFlag(ARCHName == "ck807", "-march=ck807", Flags); 1688 addMultilibFlag(ARCHName == "ck810", "-march=ck810", Flags); 1689 addMultilibFlag(ARCHName == "ck810v", "-march=ck810v", Flags); 1690 addMultilibFlag(ARCHName == "ck860", "-march=ck860", Flags); 1691 addMultilibFlag(ARCHName == "ck860v", "-march=ck860v", Flags); 1692 1693 bool isBigEndian = false; 1694 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian, 1695 options::OPT_mbig_endian)) 1696 isBigEndian = !A->getOption().matches(options::OPT_mlittle_endian); 1697 addMultilibFlag(isBigEndian, "-EB", Flags); 1698 1699 auto HardFloat = MultilibBuilder("/hard-fp").flag("-hard-fp"); 1700 auto SoftFpFloat = MultilibBuilder("/soft-fp").flag("-soft-fp"); 1701 auto SoftFloat = MultilibBuilder("").flag("-soft"); 1702 auto Arch801 = MultilibBuilder("/ck801").flag("-march=ck801"); 1703 auto Arch802 = MultilibBuilder("/ck802").flag("-march=ck802"); 1704 auto Arch803 = MultilibBuilder("/ck803").flag("-march=ck803"); 1705 // CK804 use the same library as CK803 1706 auto Arch804 = MultilibBuilder("/ck803").flag("-march=ck804"); 1707 auto Arch805 = MultilibBuilder("/ck805").flag("-march=ck805"); 1708 auto Arch807 = MultilibBuilder("/ck807").flag("-march=ck807"); 1709 auto Arch810 = MultilibBuilder("").flag("-march=ck810"); 1710 auto Arch810v = MultilibBuilder("/ck810v").flag("-march=ck810v"); 1711 auto Arch860 = MultilibBuilder("/ck860").flag("-march=ck860"); 1712 auto Arch860v = MultilibBuilder("/ck860v").flag("-march=ck860v"); 1713 auto BigEndian = MultilibBuilder("/big").flag("-EB"); 1714 1715 MultilibSet CSKYMultilibs = 1716 MultilibSetBuilder() 1717 .Maybe(BigEndian) 1718 .Either({Arch801, Arch802, Arch803, Arch804, Arch805, Arch807, 1719 Arch810, Arch810v, Arch860, Arch860v}) 1720 .Either(HardFloat, SoftFpFloat, SoftFloat) 1721 .makeMultilibSet() 1722 .FilterOut(NonExistent); 1723 1724 if (CSKYMultilibs.select(Flags, Result.SelectedMultilibs)) 1725 Result.Multilibs = CSKYMultilibs; 1726 } 1727 1728 static void findRISCVBareMetalMultilibs(const Driver &D, 1729 const llvm::Triple &TargetTriple, 1730 StringRef Path, const ArgList &Args, 1731 DetectedMultilibs &Result) { 1732 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1733 struct RiscvMultilib { 1734 StringRef march; 1735 StringRef mabi; 1736 }; 1737 // currently only support the set of multilibs like riscv-gnu-toolchain does. 1738 // TODO: support MULTILIB_REUSE 1739 constexpr RiscvMultilib RISCVMultilibSet[] = { 1740 {"rv32i", "ilp32"}, {"rv32im", "ilp32"}, {"rv32iac", "ilp32"}, 1741 {"rv32imac", "ilp32"}, {"rv32imafc", "ilp32f"}, {"rv64imac", "lp64"}, 1742 {"rv64imafdc", "lp64d"}}; 1743 1744 std::vector<MultilibBuilder> Ms; 1745 for (auto Element : RISCVMultilibSet) { 1746 // multilib path rule is ${march}/${mabi} 1747 Ms.emplace_back( 1748 MultilibBuilder( 1749 (Twine(Element.march) + "/" + Twine(Element.mabi)).str()) 1750 .flag(Twine("-march=", Element.march).str()) 1751 .flag(Twine("-mabi=", Element.mabi).str())); 1752 } 1753 MultilibSet RISCVMultilibs = 1754 MultilibSetBuilder() 1755 .Either(Ms) 1756 .makeMultilibSet() 1757 .FilterOut(NonExistent) 1758 .setFilePathsCallback([](const Multilib &M) { 1759 return std::vector<std::string>( 1760 {M.gccSuffix(), 1761 "/../../../../riscv64-unknown-elf/lib" + M.gccSuffix(), 1762 "/../../../../riscv32-unknown-elf/lib" + M.gccSuffix()}); 1763 }); 1764 1765 Multilib::flags_list Flags; 1766 llvm::StringSet<> Added_ABIs; 1767 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple); 1768 StringRef MArch = tools::riscv::getRISCVArch(Args, TargetTriple); 1769 for (auto Element : RISCVMultilibSet) { 1770 addMultilibFlag(MArch == Element.march, 1771 Twine("-march=", Element.march).str().c_str(), Flags); 1772 if (!Added_ABIs.count(Element.mabi)) { 1773 Added_ABIs.insert(Element.mabi); 1774 addMultilibFlag(ABIName == Element.mabi, 1775 Twine("-mabi=", Element.mabi).str().c_str(), Flags); 1776 } 1777 } 1778 1779 if (RISCVMultilibs.select(Flags, Result.SelectedMultilibs)) 1780 Result.Multilibs = RISCVMultilibs; 1781 } 1782 1783 static void findRISCVMultilibs(const Driver &D, 1784 const llvm::Triple &TargetTriple, StringRef Path, 1785 const ArgList &Args, DetectedMultilibs &Result) { 1786 if (TargetTriple.getOS() == llvm::Triple::UnknownOS) 1787 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result); 1788 1789 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1790 MultilibBuilder Ilp32 = 1791 MultilibBuilder("lib32/ilp32").flag("-m32").flag("-mabi=ilp32"); 1792 MultilibBuilder Ilp32f = 1793 MultilibBuilder("lib32/ilp32f").flag("-m32").flag("-mabi=ilp32f"); 1794 MultilibBuilder Ilp32d = 1795 MultilibBuilder("lib32/ilp32d").flag("-m32").flag("-mabi=ilp32d"); 1796 MultilibBuilder Lp64 = 1797 MultilibBuilder("lib64/lp64").flag("-m64").flag("-mabi=lp64"); 1798 MultilibBuilder Lp64f = 1799 MultilibBuilder("lib64/lp64f").flag("-m64").flag("-mabi=lp64f"); 1800 MultilibBuilder Lp64d = 1801 MultilibBuilder("lib64/lp64d").flag("-m64").flag("-mabi=lp64d"); 1802 MultilibSet RISCVMultilibs = 1803 MultilibSetBuilder() 1804 .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d}) 1805 .makeMultilibSet() 1806 .FilterOut(NonExistent); 1807 1808 Multilib::flags_list Flags; 1809 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64; 1810 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple); 1811 1812 addMultilibFlag(!IsRV64, "-m32", Flags); 1813 addMultilibFlag(IsRV64, "-m64", Flags); 1814 addMultilibFlag(ABIName == "ilp32", "-mabi=ilp32", Flags); 1815 addMultilibFlag(ABIName == "ilp32f", "-mabi=ilp32f", Flags); 1816 addMultilibFlag(ABIName == "ilp32d", "-mabi=ilp32d", Flags); 1817 addMultilibFlag(ABIName == "lp64", "-mabi=lp64", Flags); 1818 addMultilibFlag(ABIName == "lp64f", "-mabi=lp64f", Flags); 1819 addMultilibFlag(ABIName == "lp64d", "-mabi=lp64d", Flags); 1820 1821 if (RISCVMultilibs.select(Flags, Result.SelectedMultilibs)) 1822 Result.Multilibs = RISCVMultilibs; 1823 } 1824 1825 static bool findBiarchMultilibs(const Driver &D, 1826 const llvm::Triple &TargetTriple, 1827 StringRef Path, const ArgList &Args, 1828 bool NeedsBiarchSuffix, 1829 DetectedMultilibs &Result) { 1830 MultilibBuilder DefaultBuilder; 1831 1832 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs 1833 // in what would normally be GCCInstallPath and put the 64-bit 1834 // libs in a subdirectory named 64. The simple logic we follow is that 1835 // *if* there is a subdirectory of the right name with crtbegin.o in it, 1836 // we use that. If not, and if not a biarch triple alias, we look for 1837 // crtbegin.o without the subdirectory. 1838 1839 StringRef Suff64 = "/64"; 1840 // Solaris uses platform-specific suffixes instead of /64. 1841 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 1842 switch (TargetTriple.getArch()) { 1843 case llvm::Triple::x86: 1844 case llvm::Triple::x86_64: 1845 Suff64 = "/amd64"; 1846 break; 1847 case llvm::Triple::sparc: 1848 case llvm::Triple::sparcv9: 1849 Suff64 = "/sparcv9"; 1850 break; 1851 default: 1852 break; 1853 } 1854 } 1855 1856 Multilib Alt64 = MultilibBuilder() 1857 .gccSuffix(Suff64) 1858 .includeSuffix(Suff64) 1859 .flag("-m32", /*Disallow=*/true) 1860 .flag("-m64") 1861 .flag("-mx32", /*Disallow=*/true) 1862 .makeMultilib(); 1863 Multilib Alt32 = MultilibBuilder() 1864 .gccSuffix("/32") 1865 .includeSuffix("/32") 1866 .flag("-m32") 1867 .flag("-m64", /*Disallow=*/true) 1868 .flag("-mx32", /*Disallow=*/true) 1869 .makeMultilib(); 1870 Multilib Altx32 = MultilibBuilder() 1871 .gccSuffix("/x32") 1872 .includeSuffix("/x32") 1873 .flag("-m32", /*Disallow=*/true) 1874 .flag("-m64", /*Disallow=*/true) 1875 .flag("-mx32") 1876 .makeMultilib(); 1877 Multilib Alt32sparc = MultilibBuilder() 1878 .gccSuffix("/sparcv8plus") 1879 .includeSuffix("/sparcv8plus") 1880 .flag("-m32") 1881 .flag("-m64", /*Disallow=*/true) 1882 .makeMultilib(); 1883 1884 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a. 1885 FilterNonExistent NonExistent( 1886 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS()); 1887 1888 // Determine default multilib from: 32, 64, x32 1889 // Also handle cases such as 64 on 32, 32 on 64, etc. 1890 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN; 1891 const bool IsX32 = TargetTriple.isX32(); 1892 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32)) 1893 Want = WANT64; 1894 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32sparc)) 1895 Want = WANT64; 1896 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32)) 1897 Want = WANT64; 1898 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64)) 1899 Want = WANT32; 1900 else if (TargetTriple.isArch64Bit() && !NonExistent(Alt32sparc)) 1901 Want = WANT64; 1902 else { 1903 if (TargetTriple.isArch32Bit()) 1904 Want = NeedsBiarchSuffix ? WANT64 : WANT32; 1905 else if (IsX32) 1906 Want = NeedsBiarchSuffix ? WANT64 : WANTX32; 1907 else 1908 Want = NeedsBiarchSuffix ? WANT32 : WANT64; 1909 } 1910 1911 if (Want == WANT32) 1912 DefaultBuilder.flag("-m32") 1913 .flag("-m64", /*Disallow=*/true) 1914 .flag("-mx32", /*Disallow=*/true); 1915 else if (Want == WANT64) 1916 DefaultBuilder.flag("-m32", /*Disallow=*/true) 1917 .flag("-m64") 1918 .flag("-mx32", /*Disallow=*/true); 1919 else if (Want == WANTX32) 1920 DefaultBuilder.flag("-m32", /*Disallow=*/true) 1921 .flag("-m64", /*Disallow=*/true) 1922 .flag("-mx32"); 1923 else 1924 return false; 1925 1926 Multilib Default = DefaultBuilder.makeMultilib(); 1927 1928 Result.Multilibs.push_back(Default); 1929 Result.Multilibs.push_back(Alt64); 1930 Result.Multilibs.push_back(Alt32); 1931 Result.Multilibs.push_back(Altx32); 1932 Result.Multilibs.push_back(Alt32sparc); 1933 1934 Result.Multilibs.FilterOut(NonExistent); 1935 1936 Multilib::flags_list Flags; 1937 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "-m64", Flags); 1938 addMultilibFlag(TargetTriple.isArch32Bit(), "-m32", Flags); 1939 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "-mx32", Flags); 1940 1941 if (!Result.Multilibs.select(Flags, Result.SelectedMultilibs)) 1942 return false; 1943 1944 if (Result.SelectedMultilibs.back() == Alt64 || 1945 Result.SelectedMultilibs.back() == Alt32 || 1946 Result.SelectedMultilibs.back() == Altx32 || 1947 Result.SelectedMultilibs.back() == Alt32sparc) 1948 Result.BiarchSibling = Default; 1949 1950 return true; 1951 } 1952 1953 /// Generic_GCC - A tool chain using the 'gcc' command to perform 1954 /// all subcommands; this relies on gcc translating the majority of 1955 /// command line options. 1956 1957 /// Less-than for GCCVersion, implementing a Strict Weak Ordering. 1958 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor, 1959 int RHSPatch, 1960 StringRef RHSPatchSuffix) const { 1961 if (Major != RHSMajor) 1962 return Major < RHSMajor; 1963 if (Minor != RHSMinor) { 1964 // Note that versions without a specified minor sort higher than those with 1965 // a minor. 1966 if (RHSMinor == -1) 1967 return true; 1968 if (Minor == -1) 1969 return false; 1970 return Minor < RHSMinor; 1971 } 1972 if (Patch != RHSPatch) { 1973 // Note that versions without a specified patch sort higher than those with 1974 // a patch. 1975 if (RHSPatch == -1) 1976 return true; 1977 if (Patch == -1) 1978 return false; 1979 1980 // Otherwise just sort on the patch itself. 1981 return Patch < RHSPatch; 1982 } 1983 if (PatchSuffix != RHSPatchSuffix) { 1984 // Sort empty suffixes higher. 1985 if (RHSPatchSuffix.empty()) 1986 return true; 1987 if (PatchSuffix.empty()) 1988 return false; 1989 1990 // Provide a lexicographic sort to make this a total ordering. 1991 return PatchSuffix < RHSPatchSuffix; 1992 } 1993 1994 // The versions are equal. 1995 return false; 1996 } 1997 1998 /// Parse a GCCVersion object out of a string of text. 1999 /// 2000 /// This is the primary means of forming GCCVersion objects. 2001 /*static*/ 2002 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) { 2003 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 2004 std::pair<StringRef, StringRef> First = VersionText.split('.'); 2005 std::pair<StringRef, StringRef> Second = First.second.split('.'); 2006 2007 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 2008 if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0) 2009 return BadVersion; 2010 GoodVersion.MajorStr = First.first.str(); 2011 if (First.second.empty()) 2012 return GoodVersion; 2013 StringRef MinorStr = Second.first; 2014 if (Second.second.empty()) { 2015 if (size_t EndNumber = MinorStr.find_first_not_of("0123456789")) { 2016 GoodVersion.PatchSuffix = std::string(MinorStr.substr(EndNumber)); 2017 MinorStr = MinorStr.slice(0, EndNumber); 2018 } 2019 } 2020 if (MinorStr.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0) 2021 return BadVersion; 2022 GoodVersion.MinorStr = MinorStr.str(); 2023 2024 // First look for a number prefix and parse that if present. Otherwise just 2025 // stash the entire patch string in the suffix, and leave the number 2026 // unspecified. This covers versions strings such as: 2027 // 5 (handled above) 2028 // 4.4 2029 // 4.4-patched 2030 // 4.4.0 2031 // 4.4.x 2032 // 4.4.2-rc4 2033 // 4.4.x-patched 2034 // And retains any patch number it finds. 2035 StringRef PatchText = Second.second; 2036 if (!PatchText.empty()) { 2037 if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) { 2038 // Try to parse the number and any suffix. 2039 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) || 2040 GoodVersion.Patch < 0) 2041 return BadVersion; 2042 GoodVersion.PatchSuffix = std::string(PatchText.substr(EndNumber)); 2043 } 2044 } 2045 2046 return GoodVersion; 2047 } 2048 2049 static llvm::StringRef getGCCToolchainDir(const ArgList &Args, 2050 llvm::StringRef SysRoot) { 2051 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain); 2052 if (A) 2053 return A->getValue(); 2054 2055 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX. 2056 // GCC_INSTALL_PREFIX specifies the gcc installation for the default 2057 // sysroot and is likely not valid with a different sysroot. 2058 if (!SysRoot.empty()) 2059 return ""; 2060 2061 return GCC_INSTALL_PREFIX; 2062 } 2063 2064 /// Initialize a GCCInstallationDetector from the driver. 2065 /// 2066 /// This performs all of the autodetection and sets up the various paths. 2067 /// Once constructed, a GCCInstallationDetector is essentially immutable. 2068 /// 2069 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and 2070 /// should instead pull the target out of the driver. This is currently 2071 /// necessary because the driver doesn't store the final version of the target 2072 /// triple. 2073 void Generic_GCC::GCCInstallationDetector::init( 2074 const llvm::Triple &TargetTriple, const ArgList &Args, 2075 ArrayRef<std::string> ExtraTripleAliases) { 2076 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit() 2077 ? TargetTriple.get64BitArchVariant() 2078 : TargetTriple.get32BitArchVariant(); 2079 // The library directories which may contain GCC installations. 2080 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs; 2081 // The compatible GCC triples for this particular architecture. 2082 SmallVector<StringRef, 16> CandidateTripleAliases; 2083 SmallVector<StringRef, 16> CandidateBiarchTripleAliases; 2084 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs, 2085 CandidateTripleAliases, CandidateBiarchLibDirs, 2086 CandidateBiarchTripleAliases); 2087 2088 // If --gcc-install-dir= is specified, skip filesystem detection. 2089 if (const Arg *A = 2090 Args.getLastArg(clang::driver::options::OPT_gcc_install_dir_EQ); 2091 A && A->getValue()[0]) { 2092 StringRef InstallDir = A->getValue(); 2093 if (!ScanGCCForMultilibs(TargetTriple, Args, InstallDir, false)) { 2094 D.Diag(diag::err_drv_invalid_gcc_install_dir) << InstallDir; 2095 } else { 2096 (void)InstallDir.consume_back("/"); 2097 StringRef VersionText = llvm::sys::path::filename(InstallDir); 2098 StringRef TripleText = 2099 llvm::sys::path::filename(llvm::sys::path::parent_path(InstallDir)); 2100 2101 Version = GCCVersion::Parse(VersionText); 2102 GCCTriple.setTriple(TripleText); 2103 GCCInstallPath = std::string(InstallDir); 2104 GCCParentLibPath = GCCInstallPath + "/../../.."; 2105 IsValid = true; 2106 } 2107 return; 2108 } 2109 2110 // Compute the set of prefixes for our search. 2111 SmallVector<std::string, 8> Prefixes; 2112 StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot); 2113 if (GCCToolchainDir != "") { 2114 if (GCCToolchainDir.back() == '/') 2115 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the / 2116 2117 Prefixes.push_back(std::string(GCCToolchainDir)); 2118 } else { 2119 // If we have a SysRoot, try that first. 2120 if (!D.SysRoot.empty()) { 2121 Prefixes.push_back(D.SysRoot); 2122 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 2123 } 2124 2125 // Then look for gcc installed alongside clang. 2126 Prefixes.push_back(D.InstalledDir + "/.."); 2127 2128 // Next, look for prefix(es) that correspond to distribution-supplied gcc 2129 // installations. 2130 if (D.SysRoot.empty()) { 2131 // Typically /usr. 2132 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 2133 } 2134 2135 // Try to respect gcc-config on Gentoo if --gcc-toolchain is not provided. 2136 // This avoids accidentally enforcing the system GCC version when using a 2137 // custom toolchain. 2138 SmallVector<StringRef, 16> GentooTestTriples; 2139 // Try to match an exact triple as target triple first. 2140 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for 2141 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu" 2142 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching 2143 // triple x86_64-gentoo-linux-gnu is present. 2144 GentooTestTriples.push_back(TargetTriple.str()); 2145 // Check rest of triples. 2146 GentooTestTriples.append(ExtraTripleAliases.begin(), 2147 ExtraTripleAliases.end()); 2148 GentooTestTriples.append(CandidateTripleAliases.begin(), 2149 CandidateTripleAliases.end()); 2150 if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples, 2151 CandidateBiarchTripleAliases)) 2152 return; 2153 } 2154 2155 // Loop over the various components which exist and select the best GCC 2156 // installation available. GCC installs are ranked by version number. 2157 const GCCVersion VersionZero = GCCVersion::Parse("0.0.0"); 2158 Version = VersionZero; 2159 for (const std::string &Prefix : Prefixes) { 2160 auto &VFS = D.getVFS(); 2161 if (!VFS.exists(Prefix)) 2162 continue; 2163 for (StringRef Suffix : CandidateLibDirs) { 2164 const std::string LibDir = concat(Prefix, Suffix); 2165 if (!VFS.exists(LibDir)) 2166 continue; 2167 // Maybe filter out <libdir>/gcc and <libdir>/gcc-cross. 2168 bool GCCDirExists = VFS.exists(LibDir + "/gcc"); 2169 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross"); 2170 // Try to match the exact target triple first. 2171 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, TargetTriple.str(), 2172 false, GCCDirExists, GCCCrossDirExists); 2173 // Try rest of possible triples. 2174 for (StringRef Candidate : ExtraTripleAliases) // Try these first. 2175 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, false, 2176 GCCDirExists, GCCCrossDirExists); 2177 for (StringRef Candidate : CandidateTripleAliases) 2178 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, false, 2179 GCCDirExists, GCCCrossDirExists); 2180 } 2181 for (StringRef Suffix : CandidateBiarchLibDirs) { 2182 const std::string LibDir = Prefix + Suffix.str(); 2183 if (!VFS.exists(LibDir)) 2184 continue; 2185 bool GCCDirExists = VFS.exists(LibDir + "/gcc"); 2186 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross"); 2187 for (StringRef Candidate : CandidateBiarchTripleAliases) 2188 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, true, 2189 GCCDirExists, GCCCrossDirExists); 2190 } 2191 2192 // Skip other prefixes once a GCC installation is found. 2193 if (Version > VersionZero) 2194 break; 2195 } 2196 } 2197 2198 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const { 2199 for (const auto &InstallPath : CandidateGCCInstallPaths) 2200 OS << "Found candidate GCC installation: " << InstallPath << "\n"; 2201 2202 if (!GCCInstallPath.empty()) 2203 OS << "Selected GCC installation: " << GCCInstallPath << "\n"; 2204 2205 for (const auto &Multilib : Multilibs) 2206 OS << "Candidate multilib: " << Multilib << "\n"; 2207 2208 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault()) 2209 OS << "Selected multilib: " << SelectedMultilib << "\n"; 2210 } 2211 2212 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const { 2213 if (BiarchSibling) { 2214 M = *BiarchSibling; 2215 return true; 2216 } 2217 return false; 2218 } 2219 2220 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes( 2221 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes, 2222 StringRef SysRoot) { 2223 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 2224 // Solaris is a special case. 2225 // The GCC installation is under 2226 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/ 2227 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with 2228 // /usr/gcc/<version> as a prefix. 2229 2230 SmallVector<std::pair<GCCVersion, std::string>, 8> SolarisPrefixes; 2231 std::string PrefixDir = concat(SysRoot, "/usr/gcc"); 2232 std::error_code EC; 2233 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC), 2234 LE; 2235 !EC && LI != LE; LI = LI.increment(EC)) { 2236 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2237 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 2238 2239 // Filter out obviously bad entries. 2240 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1)) 2241 continue; 2242 2243 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str(); 2244 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc"; 2245 if (!D.getVFS().exists(CandidateLibPath)) 2246 continue; 2247 2248 SolarisPrefixes.emplace_back( 2249 std::make_pair(CandidateVersion, CandidatePrefix)); 2250 } 2251 // Sort in reverse order so GCCInstallationDetector::init picks the latest. 2252 std::sort(SolarisPrefixes.rbegin(), SolarisPrefixes.rend()); 2253 for (auto p : SolarisPrefixes) 2254 Prefixes.emplace_back(p.second); 2255 return; 2256 } 2257 2258 // For Linux, if --sysroot is not specified, look for RHEL/CentOS devtoolsets 2259 // and gcc-toolsets. 2260 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux && 2261 D.getVFS().exists("/opt/rh")) { 2262 // TODO: We may want to remove this, since the functionality 2263 // can be achieved using config files. 2264 Prefixes.push_back("/opt/rh/gcc-toolset-12/root/usr"); 2265 Prefixes.push_back("/opt/rh/gcc-toolset-11/root/usr"); 2266 Prefixes.push_back("/opt/rh/gcc-toolset-10/root/usr"); 2267 Prefixes.push_back("/opt/rh/devtoolset-12/root/usr"); 2268 Prefixes.push_back("/opt/rh/devtoolset-11/root/usr"); 2269 Prefixes.push_back("/opt/rh/devtoolset-10/root/usr"); 2270 Prefixes.push_back("/opt/rh/devtoolset-9/root/usr"); 2271 Prefixes.push_back("/opt/rh/devtoolset-8/root/usr"); 2272 Prefixes.push_back("/opt/rh/devtoolset-7/root/usr"); 2273 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr"); 2274 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr"); 2275 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr"); 2276 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr"); 2277 } 2278 2279 // Fall back to /usr which is used by most non-Solaris systems. 2280 Prefixes.push_back(concat(SysRoot, "/usr")); 2281 } 2282 2283 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples( 2284 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple, 2285 SmallVectorImpl<StringRef> &LibDirs, 2286 SmallVectorImpl<StringRef> &TripleAliases, 2287 SmallVectorImpl<StringRef> &BiarchLibDirs, 2288 SmallVectorImpl<StringRef> &BiarchTripleAliases) { 2289 // Declare a bunch of static data sets that we'll select between below. These 2290 // are specifically designed to always refer to string literals to avoid any 2291 // lifetime or initialization issues. 2292 // 2293 // The *Triples variables hard code some triples so that, for example, 2294 // --target=aarch64 (incomplete triple) can detect lib/aarch64-linux-gnu. 2295 // They are not needed when the user has correct LLVM_DEFAULT_TARGET_TRIPLE 2296 // and always uses the full --target (e.g. --target=aarch64-linux-gnu). The 2297 // lists should shrink over time. Please don't add more elements to *Triples. 2298 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"}; 2299 static const char *const AArch64Triples[] = { 2300 "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-redhat-linux", 2301 "aarch64-suse-linux"}; 2302 static const char *const AArch64beLibDirs[] = {"/lib"}; 2303 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu", 2304 "aarch64_be-linux-gnu"}; 2305 2306 static const char *const ARMLibDirs[] = {"/lib"}; 2307 static const char *const ARMTriples[] = {"arm-linux-gnueabi"}; 2308 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf", 2309 "armv7hl-redhat-linux-gnueabi", 2310 "armv6hl-suse-linux-gnueabi", 2311 "armv7hl-suse-linux-gnueabi"}; 2312 static const char *const ARMebLibDirs[] = {"/lib"}; 2313 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi"}; 2314 static const char *const ARMebHFTriples[] = { 2315 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"}; 2316 2317 static const char *const AVRLibDirs[] = {"/lib"}; 2318 static const char *const AVRTriples[] = {"avr"}; 2319 2320 static const char *const CSKYLibDirs[] = {"/lib"}; 2321 static const char *const CSKYTriples[] = { 2322 "csky-linux-gnuabiv2", "csky-linux-uclibcabiv2", "csky-elf-noneabiv2"}; 2323 2324 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"}; 2325 static const char *const X86_64Triples[] = { 2326 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu", 2327 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E", 2328 "x86_64-redhat-linux", "x86_64-suse-linux", 2329 "x86_64-manbo-linux-gnu", "x86_64-linux-gnu", 2330 "x86_64-slackware-linux", "x86_64-unknown-linux", 2331 "x86_64-amazon-linux"}; 2332 static const char *const X32Triples[] = {"x86_64-linux-gnux32", 2333 "x86_64-pc-linux-gnux32"}; 2334 static const char *const X32LibDirs[] = {"/libx32", "/lib"}; 2335 static const char *const X86LibDirs[] = {"/lib32", "/lib"}; 2336 static const char *const X86Triples[] = { 2337 "i586-linux-gnu", "i686-linux-gnu", "i686-pc-linux-gnu", 2338 "i386-redhat-linux6E", "i686-redhat-linux", "i386-redhat-linux", 2339 "i586-suse-linux", "i686-montavista-linux", "i686-gnu", 2340 }; 2341 2342 static const char *const LoongArch64LibDirs[] = {"/lib64", "/lib"}; 2343 static const char *const LoongArch64Triples[] = { 2344 "loongarch64-linux-gnu", "loongarch64-unknown-linux-gnu"}; 2345 2346 static const char *const M68kLibDirs[] = {"/lib"}; 2347 static const char *const M68kTriples[] = { 2348 "m68k-linux-gnu", "m68k-unknown-linux-gnu", "m68k-suse-linux"}; 2349 2350 static const char *const MIPSLibDirs[] = {"/libo32", "/lib"}; 2351 static const char *const MIPSTriples[] = { 2352 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu", 2353 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"}; 2354 static const char *const MIPSELLibDirs[] = {"/libo32", "/lib"}; 2355 static const char *const MIPSELTriples[] = { 2356 "mipsel-linux-gnu", "mips-img-linux-gnu", "mipsisa32r6el-linux-gnu"}; 2357 2358 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"}; 2359 static const char *const MIPS64Triples[] = { 2360 "mips64-linux-gnu", "mips-mti-linux-gnu", 2361 "mips-img-linux-gnu", "mips64-linux-gnuabi64", 2362 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"}; 2363 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"}; 2364 static const char *const MIPS64ELTriples[] = { 2365 "mips64el-linux-gnu", "mips-mti-linux-gnu", 2366 "mips-img-linux-gnu", "mips64el-linux-gnuabi64", 2367 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64"}; 2368 2369 static const char *const MIPSN32LibDirs[] = {"/lib32"}; 2370 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32", 2371 "mipsisa64r6-linux-gnuabin32"}; 2372 static const char *const MIPSN32ELLibDirs[] = {"/lib32"}; 2373 static const char *const MIPSN32ELTriples[] = { 2374 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"}; 2375 2376 static const char *const MSP430LibDirs[] = {"/lib"}; 2377 static const char *const MSP430Triples[] = {"msp430-elf"}; 2378 2379 static const char *const PPCLibDirs[] = {"/lib32", "/lib"}; 2380 static const char *const PPCTriples[] = { 2381 "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe", 2382 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a 2383 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux". 2384 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"}; 2385 static const char *const PPCLELibDirs[] = {"/lib32", "/lib"}; 2386 static const char *const PPCLETriples[] = {"powerpcle-linux-gnu", 2387 "powerpcle-unknown-linux-gnu", 2388 "powerpcle-linux-musl"}; 2389 2390 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"}; 2391 static const char *const PPC64Triples[] = { 2392 "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu", 2393 "powerpc64-suse-linux", "ppc64-redhat-linux"}; 2394 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"}; 2395 static const char *const PPC64LETriples[] = { 2396 "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu", 2397 "powerpc64le-none-linux-gnu", "powerpc64le-suse-linux", 2398 "ppc64le-redhat-linux"}; 2399 2400 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"}; 2401 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu", 2402 "riscv32-linux-gnu", 2403 "riscv32-unknown-elf"}; 2404 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"}; 2405 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu", 2406 "riscv64-linux-gnu", 2407 "riscv64-unknown-elf"}; 2408 2409 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"}; 2410 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu", 2411 "sparcv8-linux-gnu"}; 2412 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"}; 2413 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu", 2414 "sparcv9-linux-gnu"}; 2415 2416 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"}; 2417 static const char *const SystemZTriples[] = { 2418 "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu", 2419 "s390x-suse-linux", "s390x-redhat-linux"}; 2420 2421 2422 using std::begin; 2423 using std::end; 2424 2425 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 2426 static const char *const SolarisLibDirs[] = {"/lib"}; 2427 static const char *const SolarisSparcV8Triples[] = { 2428 "sparc-sun-solaris2.11", "sparc-sun-solaris2.12"}; 2429 static const char *const SolarisSparcV9Triples[] = { 2430 "sparcv9-sun-solaris2.11", "sparcv9-sun-solaris2.12"}; 2431 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11", 2432 "i386-pc-solaris2.12"}; 2433 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11", 2434 "x86_64-pc-solaris2.12"}; 2435 LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 2436 BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 2437 switch (TargetTriple.getArch()) { 2438 case llvm::Triple::x86: 2439 TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples)); 2440 BiarchTripleAliases.append(begin(SolarisX86_64Triples), 2441 end(SolarisX86_64Triples)); 2442 break; 2443 case llvm::Triple::x86_64: 2444 TripleAliases.append(begin(SolarisX86_64Triples), 2445 end(SolarisX86_64Triples)); 2446 BiarchTripleAliases.append(begin(SolarisX86Triples), 2447 end(SolarisX86Triples)); 2448 break; 2449 case llvm::Triple::sparc: 2450 TripleAliases.append(begin(SolarisSparcV8Triples), 2451 end(SolarisSparcV8Triples)); 2452 BiarchTripleAliases.append(begin(SolarisSparcV9Triples), 2453 end(SolarisSparcV9Triples)); 2454 break; 2455 case llvm::Triple::sparcv9: 2456 TripleAliases.append(begin(SolarisSparcV9Triples), 2457 end(SolarisSparcV9Triples)); 2458 BiarchTripleAliases.append(begin(SolarisSparcV8Triples), 2459 end(SolarisSparcV8Triples)); 2460 break; 2461 default: 2462 break; 2463 } 2464 return; 2465 } 2466 2467 // Android targets should not use GNU/Linux tools or libraries. 2468 if (TargetTriple.isAndroid()) { 2469 static const char *const AArch64AndroidTriples[] = { 2470 "aarch64-linux-android"}; 2471 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"}; 2472 static const char *const X86AndroidTriples[] = {"i686-linux-android"}; 2473 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"}; 2474 2475 switch (TargetTriple.getArch()) { 2476 case llvm::Triple::aarch64: 2477 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2478 TripleAliases.append(begin(AArch64AndroidTriples), 2479 end(AArch64AndroidTriples)); 2480 break; 2481 case llvm::Triple::arm: 2482 case llvm::Triple::thumb: 2483 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2484 TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples)); 2485 break; 2486 case llvm::Triple::x86_64: 2487 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2488 TripleAliases.append(begin(X86_64AndroidTriples), 2489 end(X86_64AndroidTriples)); 2490 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2491 BiarchTripleAliases.append(begin(X86AndroidTriples), 2492 end(X86AndroidTriples)); 2493 break; 2494 case llvm::Triple::x86: 2495 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2496 TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples)); 2497 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2498 BiarchTripleAliases.append(begin(X86_64AndroidTriples), 2499 end(X86_64AndroidTriples)); 2500 break; 2501 default: 2502 break; 2503 } 2504 2505 return; 2506 } 2507 2508 switch (TargetTriple.getArch()) { 2509 case llvm::Triple::aarch64: 2510 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2511 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2512 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2513 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2514 break; 2515 case llvm::Triple::aarch64_be: 2516 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2517 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2518 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2519 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2520 break; 2521 case llvm::Triple::arm: 2522 case llvm::Triple::thumb: 2523 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2524 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2525 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples)); 2526 } else { 2527 TripleAliases.append(begin(ARMTriples), end(ARMTriples)); 2528 } 2529 break; 2530 case llvm::Triple::armeb: 2531 case llvm::Triple::thumbeb: 2532 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs)); 2533 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2534 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples)); 2535 } else { 2536 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples)); 2537 } 2538 break; 2539 case llvm::Triple::avr: 2540 LibDirs.append(begin(AVRLibDirs), end(AVRLibDirs)); 2541 TripleAliases.append(begin(AVRTriples), end(AVRTriples)); 2542 break; 2543 case llvm::Triple::csky: 2544 LibDirs.append(begin(CSKYLibDirs), end(CSKYLibDirs)); 2545 TripleAliases.append(begin(CSKYTriples), end(CSKYTriples)); 2546 break; 2547 case llvm::Triple::x86_64: 2548 if (TargetTriple.isX32()) { 2549 LibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2550 TripleAliases.append(begin(X32Triples), end(X32Triples)); 2551 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2552 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2553 } else { 2554 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2555 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2556 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2557 BiarchTripleAliases.append(begin(X32Triples), end(X32Triples)); 2558 } 2559 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2560 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples)); 2561 break; 2562 case llvm::Triple::x86: 2563 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2564 // MCU toolchain is 32 bit only and its triple alias is TargetTriple 2565 // itself, which will be appended below. 2566 if (!TargetTriple.isOSIAMCU()) { 2567 TripleAliases.append(begin(X86Triples), end(X86Triples)); 2568 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2569 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2570 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2571 BiarchTripleAliases.append(begin(X32Triples), end(X32Triples)); 2572 } 2573 break; 2574 // TODO: Handle loongarch32. 2575 case llvm::Triple::loongarch64: 2576 LibDirs.append(begin(LoongArch64LibDirs), end(LoongArch64LibDirs)); 2577 TripleAliases.append(begin(LoongArch64Triples), end(LoongArch64Triples)); 2578 break; 2579 case llvm::Triple::m68k: 2580 LibDirs.append(begin(M68kLibDirs), end(M68kLibDirs)); 2581 TripleAliases.append(begin(M68kTriples), end(M68kTriples)); 2582 break; 2583 case llvm::Triple::mips: 2584 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2585 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2586 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2587 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2588 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs)); 2589 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples)); 2590 break; 2591 case llvm::Triple::mipsel: 2592 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2593 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2594 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2595 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2596 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2597 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs)); 2598 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples)); 2599 break; 2600 case llvm::Triple::mips64: 2601 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2602 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2603 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2604 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2605 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs)); 2606 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples)); 2607 break; 2608 case llvm::Triple::mips64el: 2609 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2610 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2611 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2612 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2613 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs)); 2614 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples)); 2615 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2616 break; 2617 case llvm::Triple::msp430: 2618 LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs)); 2619 TripleAliases.append(begin(MSP430Triples), end(MSP430Triples)); 2620 break; 2621 case llvm::Triple::ppc: 2622 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2623 TripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2624 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2625 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2626 break; 2627 case llvm::Triple::ppcle: 2628 LibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs)); 2629 TripleAliases.append(begin(PPCLETriples), end(PPCLETriples)); 2630 BiarchLibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs)); 2631 BiarchTripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples)); 2632 break; 2633 case llvm::Triple::ppc64: 2634 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2635 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2636 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2637 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2638 break; 2639 case llvm::Triple::ppc64le: 2640 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs)); 2641 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples)); 2642 BiarchLibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs)); 2643 BiarchTripleAliases.append(begin(PPCLETriples), end(PPCLETriples)); 2644 break; 2645 case llvm::Triple::riscv32: 2646 LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2647 TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples)); 2648 BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs)); 2649 BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples)); 2650 break; 2651 case llvm::Triple::riscv64: 2652 LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs)); 2653 TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples)); 2654 BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2655 BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples)); 2656 break; 2657 case llvm::Triple::sparc: 2658 case llvm::Triple::sparcel: 2659 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2660 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2661 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2662 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2663 break; 2664 case llvm::Triple::sparcv9: 2665 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2666 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2667 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2668 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2669 break; 2670 case llvm::Triple::systemz: 2671 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs)); 2672 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples)); 2673 break; 2674 default: 2675 // By default, just rely on the standard lib directories and the original 2676 // triple. 2677 break; 2678 } 2679 2680 // Always append the drivers target triple to the end, in case it doesn't 2681 // match any of our aliases. 2682 TripleAliases.push_back(TargetTriple.str()); 2683 2684 // Also include the multiarch variant if it's different. 2685 if (TargetTriple.str() != BiarchTriple.str()) 2686 BiarchTripleAliases.push_back(BiarchTriple.str()); 2687 } 2688 2689 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs( 2690 const llvm::Triple &TargetTriple, const ArgList &Args, 2691 StringRef Path, bool NeedsBiarchSuffix) { 2692 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 2693 DetectedMultilibs Detected; 2694 2695 // Android standalone toolchain could have multilibs for ARM and Thumb. 2696 // Debian mips multilibs behave more like the rest of the biarch ones, 2697 // so handle them there 2698 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) { 2699 // It should also work without multilibs in a simplified toolchain. 2700 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected); 2701 } else if (TargetTriple.isCSKY()) { 2702 findCSKYMultilibs(D, TargetTriple, Path, Args, Detected); 2703 } else if (TargetTriple.isMIPS()) { 2704 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected)) 2705 return false; 2706 } else if (TargetTriple.isRISCV()) { 2707 findRISCVMultilibs(D, TargetTriple, Path, Args, Detected); 2708 } else if (isMSP430(TargetArch)) { 2709 findMSP430Multilibs(D, TargetTriple, Path, Args, Detected); 2710 } else if (TargetArch == llvm::Triple::avr) { 2711 // AVR has no multilibs. 2712 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args, 2713 NeedsBiarchSuffix, Detected)) { 2714 return false; 2715 } 2716 2717 Multilibs = Detected.Multilibs; 2718 SelectedMultilib = Detected.SelectedMultilibs.empty() 2719 ? Multilib() 2720 : Detected.SelectedMultilibs.back(); 2721 BiarchSibling = Detected.BiarchSibling; 2722 2723 return true; 2724 } 2725 2726 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple( 2727 const llvm::Triple &TargetTriple, const ArgList &Args, 2728 const std::string &LibDir, StringRef CandidateTriple, 2729 bool NeedsBiarchSuffix, bool GCCDirExists, bool GCCCrossDirExists) { 2730 // Locations relative to the system lib directory where GCC's triple-specific 2731 // directories might reside. 2732 struct GCCLibSuffix { 2733 // Path from system lib directory to GCC triple-specific directory. 2734 std::string LibSuffix; 2735 // Path from GCC triple-specific directory back to system lib directory. 2736 // This is one '..' component per component in LibSuffix. 2737 StringRef ReversePath; 2738 // Whether this library suffix is relevant for the triple. 2739 bool Active; 2740 } Suffixes[] = { 2741 // This is the normal place. 2742 {"gcc/" + CandidateTriple.str(), "../..", GCCDirExists}, 2743 2744 // Debian puts cross-compilers in gcc-cross. 2745 {"gcc-cross/" + CandidateTriple.str(), "../..", GCCCrossDirExists}, 2746 2747 // The Freescale PPC SDK has the gcc libraries in 2748 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do 2749 // this on Freescale triples, though, since some systems put a *lot* of 2750 // files in that location, not just GCC installation data. 2751 {CandidateTriple.str(), "..", 2752 TargetTriple.getVendor() == llvm::Triple::Freescale || 2753 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}}; 2754 2755 for (auto &Suffix : Suffixes) { 2756 if (!Suffix.Active) 2757 continue; 2758 2759 StringRef LibSuffix = Suffix.LibSuffix; 2760 std::error_code EC; 2761 for (llvm::vfs::directory_iterator 2762 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC), 2763 LE; 2764 !EC && LI != LE; LI = LI.increment(EC)) { 2765 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2766 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 2767 if (CandidateVersion.Major != -1) // Filter obviously bad entries. 2768 if (!CandidateGCCInstallPaths.insert(std::string(LI->path())).second) 2769 continue; // Saw this path before; no need to look at it again. 2770 if (CandidateVersion.isOlderThan(4, 1, 1)) 2771 continue; 2772 if (CandidateVersion <= Version) 2773 continue; 2774 2775 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(), 2776 NeedsBiarchSuffix)) 2777 continue; 2778 2779 Version = CandidateVersion; 2780 GCCTriple.setTriple(CandidateTriple); 2781 // FIXME: We hack together the directory name here instead of 2782 // using LI to ensure stable path separators across Windows and 2783 // Linux. 2784 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str(); 2785 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str(); 2786 IsValid = true; 2787 } 2788 } 2789 } 2790 2791 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs( 2792 const llvm::Triple &TargetTriple, const ArgList &Args, 2793 const SmallVectorImpl<StringRef> &CandidateTriples, 2794 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) { 2795 if (!D.getVFS().exists(concat(D.SysRoot, GentooConfigDir))) 2796 return false; 2797 2798 for (StringRef CandidateTriple : CandidateTriples) { 2799 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple)) 2800 return true; 2801 } 2802 2803 for (StringRef CandidateTriple : CandidateBiarchTriples) { 2804 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true)) 2805 return true; 2806 } 2807 return false; 2808 } 2809 2810 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig( 2811 const llvm::Triple &TargetTriple, const ArgList &Args, 2812 StringRef CandidateTriple, bool NeedsBiarchSuffix) { 2813 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File = 2814 D.getVFS().getBufferForFile(concat(D.SysRoot, GentooConfigDir, 2815 "/config-" + CandidateTriple.str())); 2816 if (File) { 2817 SmallVector<StringRef, 2> Lines; 2818 File.get()->getBuffer().split(Lines, "\n"); 2819 for (StringRef Line : Lines) { 2820 Line = Line.trim(); 2821 // CURRENT=triple-version 2822 if (!Line.consume_front("CURRENT=")) 2823 continue; 2824 // Process the config file pointed to by CURRENT. 2825 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile = 2826 D.getVFS().getBufferForFile( 2827 concat(D.SysRoot, GentooConfigDir, "/" + Line)); 2828 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-'); 2829 // List of paths to scan for libraries. 2830 SmallVector<StringRef, 4> GentooScanPaths; 2831 // Scan the Config file to find installed GCC libraries path. 2832 // Typical content of the GCC config file: 2833 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/ 2834 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32" 2835 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man" 2836 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info" 2837 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4" 2838 // We are looking for the paths listed in LDPATH=... . 2839 if (ConfigFile) { 2840 SmallVector<StringRef, 2> ConfigLines; 2841 ConfigFile.get()->getBuffer().split(ConfigLines, "\n"); 2842 for (StringRef ConfLine : ConfigLines) { 2843 ConfLine = ConfLine.trim(); 2844 if (ConfLine.consume_front("LDPATH=")) { 2845 // Drop '"' from front and back if present. 2846 ConfLine.consume_back("\""); 2847 ConfLine.consume_front("\""); 2848 // Get all paths sperated by ':' 2849 ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false); 2850 } 2851 } 2852 } 2853 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}. 2854 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/" 2855 + ActiveVersion.second.str(); 2856 GentooScanPaths.push_back(StringRef(basePath)); 2857 2858 // Scan all paths for GCC libraries. 2859 for (const auto &GentooScanPath : GentooScanPaths) { 2860 std::string GentooPath = concat(D.SysRoot, GentooScanPath); 2861 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) { 2862 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath, 2863 NeedsBiarchSuffix)) 2864 continue; 2865 2866 Version = GCCVersion::Parse(ActiveVersion.second); 2867 GCCInstallPath = GentooPath; 2868 GCCParentLibPath = GentooPath + std::string("/../../.."); 2869 GCCTriple.setTriple(ActiveVersion.first); 2870 IsValid = true; 2871 return true; 2872 } 2873 } 2874 } 2875 } 2876 2877 return false; 2878 } 2879 2880 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple, 2881 const ArgList &Args) 2882 : ToolChain(D, Triple, Args), GCCInstallation(D), 2883 CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args) { 2884 getProgramPaths().push_back(getDriver().getInstalledDir()); 2885 if (getDriver().getInstalledDir() != getDriver().Dir) 2886 getProgramPaths().push_back(getDriver().Dir); 2887 } 2888 2889 Generic_GCC::~Generic_GCC() {} 2890 2891 Tool *Generic_GCC::getTool(Action::ActionClass AC) const { 2892 switch (AC) { 2893 case Action::PreprocessJobClass: 2894 if (!Preprocess) 2895 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this)); 2896 return Preprocess.get(); 2897 case Action::CompileJobClass: 2898 if (!Compile) 2899 Compile.reset(new tools::gcc::Compiler(*this)); 2900 return Compile.get(); 2901 default: 2902 return ToolChain::getTool(AC); 2903 } 2904 } 2905 2906 Tool *Generic_GCC::buildAssembler() const { 2907 return new tools::gnutools::Assembler(*this); 2908 } 2909 2910 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); } 2911 2912 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const { 2913 // Print the information about how we detected the GCC installation. 2914 GCCInstallation.print(OS); 2915 CudaInstallation->print(OS); 2916 RocmInstallation->print(OS); 2917 } 2918 2919 ToolChain::UnwindTableLevel 2920 Generic_GCC::getDefaultUnwindTableLevel(const ArgList &Args) const { 2921 switch (getArch()) { 2922 case llvm::Triple::aarch64: 2923 case llvm::Triple::ppc: 2924 case llvm::Triple::ppcle: 2925 case llvm::Triple::ppc64: 2926 case llvm::Triple::ppc64le: 2927 case llvm::Triple::riscv32: 2928 case llvm::Triple::riscv64: 2929 case llvm::Triple::x86: 2930 case llvm::Triple::x86_64: 2931 return UnwindTableLevel::Asynchronous; 2932 default: 2933 return UnwindTableLevel::None; 2934 } 2935 } 2936 2937 bool Generic_GCC::isPICDefault() const { 2938 switch (getArch()) { 2939 case llvm::Triple::x86_64: 2940 return getTriple().isOSWindows(); 2941 case llvm::Triple::mips64: 2942 case llvm::Triple::mips64el: 2943 return true; 2944 default: 2945 return false; 2946 } 2947 } 2948 2949 bool Generic_GCC::isPIEDefault(const llvm::opt::ArgList &Args) const { 2950 return false; 2951 } 2952 2953 bool Generic_GCC::isPICDefaultForced() const { 2954 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows(); 2955 } 2956 2957 bool Generic_GCC::IsIntegratedAssemblerDefault() const { 2958 switch (getTriple().getArch()) { 2959 case llvm::Triple::nvptx: 2960 case llvm::Triple::nvptx64: 2961 case llvm::Triple::xcore: 2962 return false; 2963 default: 2964 return getTriple().getVendor() != llvm::Triple::Myriad; 2965 } 2966 } 2967 2968 void Generic_GCC::PushPPaths(ToolChain::path_list &PPaths) { 2969 // Cross-compiling binutils and GCC installations (vanilla and openSUSE at 2970 // least) put various tools in a triple-prefixed directory off of the parent 2971 // of the GCC installation. We use the GCC triple here to ensure that we end 2972 // up with tools that support the same amount of cross compiling as the 2973 // detected GCC installation. For example, if we find a GCC installation 2974 // targeting x86_64, but it is a bi-arch GCC installation, it can also be 2975 // used to target i386. 2976 if (GCCInstallation.isValid()) { 2977 PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" + 2978 GCCInstallation.getTriple().str() + "/bin") 2979 .str()); 2980 } 2981 } 2982 2983 void Generic_GCC::AddMultilibPaths(const Driver &D, 2984 const std::string &SysRoot, 2985 const std::string &OSLibDir, 2986 const std::string &MultiarchTriple, 2987 path_list &Paths) { 2988 // Add the multilib suffixed paths where they are available. 2989 if (GCCInstallation.isValid()) { 2990 assert(!SelectedMultilibs.empty()); 2991 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2992 const std::string &LibPath = 2993 std::string(GCCInstallation.getParentLibPath()); 2994 2995 // Sourcery CodeBench MIPS toolchain holds some libraries under 2996 // a biarch-like suffix of the GCC installation. 2997 if (const auto &PathsCallback = Multilibs.filePathsCallback()) 2998 for (const auto &Path : PathsCallback(SelectedMultilibs.back())) 2999 addPathIfExists(D, GCCInstallation.getInstallPath() + Path, Paths); 3000 3001 // Add lib/gcc/$triple/$version, with an optional /multilib suffix. 3002 addPathIfExists(D, 3003 GCCInstallation.getInstallPath() + 3004 SelectedMultilibs.back().gccSuffix(), 3005 Paths); 3006 3007 // Add lib/gcc/$triple/$libdir 3008 // For GCC built with --enable-version-specific-runtime-libs. 3009 addPathIfExists(D, GCCInstallation.getInstallPath() + "/../" + OSLibDir, 3010 Paths); 3011 3012 // GCC cross compiling toolchains will install target libraries which ship 3013 // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as 3014 // any part of the GCC installation in 3015 // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat 3016 // debatable, but is the reality today. We need to search this tree even 3017 // when we have a sysroot somewhere else. It is the responsibility of 3018 // whomever is doing the cross build targeting a sysroot using a GCC 3019 // installation that is *not* within the system root to ensure two things: 3020 // 3021 // 1) Any DSOs that are linked in from this tree or from the install path 3022 // above must be present on the system root and found via an 3023 // appropriate rpath. 3024 // 2) There must not be libraries installed into 3025 // <prefix>/<triple>/<libdir> unless they should be preferred over 3026 // those within the system root. 3027 // 3028 // Note that this matches the GCC behavior. See the below comment for where 3029 // Clang diverges from GCC's behavior. 3030 addPathIfExists(D, 3031 LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir + 3032 SelectedMultilibs.back().osSuffix(), 3033 Paths); 3034 3035 // If the GCC installation we found is inside of the sysroot, we want to 3036 // prefer libraries installed in the parent prefix of the GCC installation. 3037 // It is important to *not* use these paths when the GCC installation is 3038 // outside of the system root as that can pick up unintended libraries. 3039 // This usually happens when there is an external cross compiler on the 3040 // host system, and a more minimal sysroot available that is the target of 3041 // the cross. Note that GCC does include some of these directories in some 3042 // configurations but this seems somewhere between questionable and simply 3043 // a bug. 3044 if (StringRef(LibPath).startswith(SysRoot)) 3045 addPathIfExists(D, LibPath + "/../" + OSLibDir, Paths); 3046 } 3047 } 3048 3049 void Generic_GCC::AddMultiarchPaths(const Driver &D, 3050 const std::string &SysRoot, 3051 const std::string &OSLibDir, 3052 path_list &Paths) { 3053 if (GCCInstallation.isValid()) { 3054 const std::string &LibPath = 3055 std::string(GCCInstallation.getParentLibPath()); 3056 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 3057 const Multilib &Multilib = GCCInstallation.getMultilib(); 3058 addPathIfExists( 3059 D, LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(), 3060 Paths); 3061 } 3062 } 3063 3064 void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs, 3065 ArgStringList &CC1Args) const { 3066 // Add include directories specific to the selected multilib set and multilib. 3067 if (!GCCInstallation.isValid()) 3068 return; 3069 // gcc TOOL_INCLUDE_DIR. 3070 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 3071 std::string LibPath(GCCInstallation.getParentLibPath()); 3072 addSystemInclude(DriverArgs, CC1Args, 3073 Twine(LibPath) + "/../" + GCCTriple.str() + "/include"); 3074 3075 const auto &Callback = Multilibs.includeDirsCallback(); 3076 if (Callback) { 3077 for (const auto &Path : Callback(GCCInstallation.getMultilib())) 3078 addExternCSystemIncludeIfExists(DriverArgs, CC1Args, 3079 GCCInstallation.getInstallPath() + Path); 3080 } 3081 } 3082 3083 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 3084 ArgStringList &CC1Args) const { 3085 if (DriverArgs.hasArg(options::OPT_nostdinc, options::OPT_nostdincxx, 3086 options::OPT_nostdlibinc)) 3087 return; 3088 3089 switch (GetCXXStdlibType(DriverArgs)) { 3090 case ToolChain::CST_Libcxx: 3091 addLibCxxIncludePaths(DriverArgs, CC1Args); 3092 break; 3093 3094 case ToolChain::CST_Libstdcxx: 3095 addLibStdCxxIncludePaths(DriverArgs, CC1Args); 3096 break; 3097 } 3098 } 3099 3100 void 3101 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 3102 llvm::opt::ArgStringList &CC1Args) const { 3103 const Driver &D = getDriver(); 3104 std::string SysRoot = computeSysRoot(); 3105 std::string Target = getTripleString(); 3106 3107 auto AddIncludePath = [&](std::string Path) { 3108 std::string Version = detectLibcxxVersion(Path); 3109 if (Version.empty()) 3110 return false; 3111 3112 // First add the per-target include path if it exists. 3113 std::string TargetDir = Path + "/" + Target + "/c++/" + Version; 3114 if (D.getVFS().exists(TargetDir)) 3115 addSystemInclude(DriverArgs, CC1Args, TargetDir); 3116 3117 // Second add the generic one. 3118 addSystemInclude(DriverArgs, CC1Args, Path + "/c++/" + Version); 3119 return true; 3120 }; 3121 3122 // Android never uses the libc++ headers installed alongside the toolchain, 3123 // which are generally incompatible with the NDK libraries anyway. 3124 if (!getTriple().isAndroid()) 3125 if (AddIncludePath(getDriver().Dir + "/../include")) 3126 return; 3127 // If this is a development, non-installed, clang, libcxx will 3128 // not be found at ../include/c++ but it likely to be found at 3129 // one of the following two locations: 3130 if (AddIncludePath(concat(SysRoot, "/usr/local/include"))) 3131 return; 3132 if (AddIncludePath(concat(SysRoot, "/usr/include"))) 3133 return; 3134 } 3135 3136 bool Generic_GCC::addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple, 3137 Twine IncludeSuffix, 3138 const llvm::opt::ArgList &DriverArgs, 3139 llvm::opt::ArgStringList &CC1Args, 3140 bool DetectDebian) const { 3141 if (!getVFS().exists(IncludeDir)) 3142 return false; 3143 3144 // Debian native gcc uses g++-multiarch-incdir.diff which uses 3145 // include/x86_64-linux-gnu/c++/10$IncludeSuffix instead of 3146 // include/c++/10/x86_64-linux-gnu$IncludeSuffix. 3147 std::string Dir = IncludeDir.str(); 3148 StringRef Include = 3149 llvm::sys::path::parent_path(llvm::sys::path::parent_path(Dir)); 3150 std::string Path = 3151 (Include + "/" + Triple + Dir.substr(Include.size()) + IncludeSuffix) 3152 .str(); 3153 if (DetectDebian && !getVFS().exists(Path)) 3154 return false; 3155 3156 // GPLUSPLUS_INCLUDE_DIR 3157 addSystemInclude(DriverArgs, CC1Args, IncludeDir); 3158 // GPLUSPLUS_TOOL_INCLUDE_DIR. If Triple is not empty, add a target-dependent 3159 // include directory. 3160 if (DetectDebian) 3161 addSystemInclude(DriverArgs, CC1Args, Path); 3162 else if (!Triple.empty()) 3163 addSystemInclude(DriverArgs, CC1Args, 3164 IncludeDir + "/" + Triple + IncludeSuffix); 3165 // GPLUSPLUS_BACKWARD_INCLUDE_DIR 3166 addSystemInclude(DriverArgs, CC1Args, IncludeDir + "/backward"); 3167 return true; 3168 } 3169 3170 bool Generic_GCC::addGCCLibStdCxxIncludePaths( 3171 const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, 3172 StringRef DebianMultiarch) const { 3173 assert(GCCInstallation.isValid()); 3174 3175 // By default, look for the C++ headers in an include directory adjacent to 3176 // the lib directory of the GCC installation. Note that this is expect to be 3177 // equivalent to '/usr/include/c++/X.Y' in almost all cases. 3178 StringRef LibDir = GCCInstallation.getParentLibPath(); 3179 StringRef InstallDir = GCCInstallation.getInstallPath(); 3180 StringRef TripleStr = GCCInstallation.getTriple().str(); 3181 const Multilib &Multilib = GCCInstallation.getMultilib(); 3182 const GCCVersion &Version = GCCInstallation.getVersion(); 3183 3184 // Try /../$triple/include/c++/$version (gcc --print-multiarch is not empty). 3185 if (addLibStdCXXIncludePaths( 3186 LibDir.str() + "/../" + TripleStr + "/include/c++/" + Version.Text, 3187 TripleStr, Multilib.includeSuffix(), DriverArgs, CC1Args)) 3188 return true; 3189 3190 // Try /gcc/$triple/$version/include/c++/ (gcc --print-multiarch is not 3191 // empty). Like above but for GCC built with 3192 // --enable-version-specific-runtime-libs. 3193 if (addLibStdCXXIncludePaths(LibDir.str() + "/gcc/" + TripleStr + "/" + 3194 Version.Text + "/include/c++/", 3195 TripleStr, Multilib.includeSuffix(), DriverArgs, 3196 CC1Args)) 3197 return true; 3198 3199 // Detect Debian g++-multiarch-incdir.diff. 3200 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text, 3201 DebianMultiarch, Multilib.includeSuffix(), 3202 DriverArgs, CC1Args, /*Debian=*/true)) 3203 return true; 3204 3205 // Try /../include/c++/$version (gcc --print-multiarch is empty). 3206 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text, 3207 TripleStr, Multilib.includeSuffix(), DriverArgs, 3208 CC1Args)) 3209 return true; 3210 3211 // Otherwise, fall back on a bunch of options which don't use multiarch 3212 // layouts for simplicity. 3213 const std::string LibStdCXXIncludePathCandidates[] = { 3214 // Gentoo is weird and places its headers inside the GCC install, 3215 // so if the first attempt to find the headers fails, try these patterns. 3216 InstallDir.str() + "/include/g++-v" + Version.Text, 3217 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." + 3218 Version.MinorStr, 3219 InstallDir.str() + "/include/g++-v" + Version.MajorStr, 3220 }; 3221 3222 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) { 3223 if (addLibStdCXXIncludePaths(IncludePath, TripleStr, 3224 Multilib.includeSuffix(), DriverArgs, CC1Args)) 3225 return true; 3226 } 3227 return false; 3228 } 3229 3230 void 3231 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 3232 llvm::opt::ArgStringList &CC1Args) const { 3233 if (GCCInstallation.isValid()) { 3234 addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args, 3235 GCCInstallation.getTriple().str()); 3236 } 3237 } 3238 3239 llvm::opt::DerivedArgList * 3240 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef, 3241 Action::OffloadKind DeviceOffloadKind) const { 3242 3243 // If this tool chain is used for an OpenMP offloading device we have to make 3244 // sure we always generate a shared library regardless of the commands the 3245 // user passed to the host. This is required because the runtime library 3246 // is required to load the device image dynamically at run time. 3247 if (DeviceOffloadKind == Action::OFK_OpenMP) { 3248 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs()); 3249 const OptTable &Opts = getDriver().getOpts(); 3250 3251 // Request the shared library. Given that these options are decided 3252 // implicitly, they do not refer to any base argument. 3253 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared)); 3254 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC)); 3255 3256 // Filter all the arguments we don't care passing to the offloading 3257 // toolchain as they can mess up with the creation of a shared library. 3258 for (auto *A : Args) { 3259 switch ((options::ID)A->getOption().getID()) { 3260 default: 3261 DAL->append(A); 3262 break; 3263 case options::OPT_shared: 3264 case options::OPT_dynamic: 3265 case options::OPT_static: 3266 case options::OPT_fPIC: 3267 case options::OPT_fno_PIC: 3268 case options::OPT_fpic: 3269 case options::OPT_fno_pic: 3270 case options::OPT_fPIE: 3271 case options::OPT_fno_PIE: 3272 case options::OPT_fpie: 3273 case options::OPT_fno_pie: 3274 break; 3275 } 3276 } 3277 return DAL; 3278 } 3279 return nullptr; 3280 } 3281 3282 void Generic_ELF::anchor() {} 3283 3284 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs, 3285 ArgStringList &CC1Args, 3286 Action::OffloadKind) const { 3287 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array, 3288 options::OPT_fno_use_init_array, true)) 3289 CC1Args.push_back("-fno-use-init-array"); 3290 } 3291