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/RISCVISAInfo.h" 34 #include "llvm/Support/VirtualFileSystem.h" 35 #include "llvm/TargetParser/TargetParser.h" 36 #include <system_error> 37 38 using namespace clang::driver; 39 using namespace clang::driver::toolchains; 40 using namespace clang; 41 using namespace llvm::opt; 42 43 using tools::addMultilibFlag; 44 using tools::addPathIfExists; 45 46 static bool forwardToGCC(const Option &O) { 47 // LinkerInput options have been forwarded. Don't duplicate. 48 if (O.hasFlag(options::LinkerInput)) 49 return false; 50 return O.matches(options::OPT_Link_Group) || O.hasFlag(options::LinkOption); 51 } 52 53 // Switch CPU names not recognized by GNU assembler to a close CPU that it does 54 // recognize, instead of a lower march from being picked in the absence of a cpu 55 // flag. 56 static void normalizeCPUNamesForAssembler(const ArgList &Args, 57 ArgStringList &CmdArgs) { 58 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) { 59 StringRef CPUArg(A->getValue()); 60 if (CPUArg.equals_insensitive("krait")) 61 CmdArgs.push_back("-mcpu=cortex-a15"); 62 else if (CPUArg.equals_insensitive("kryo")) 63 CmdArgs.push_back("-mcpu=cortex-a57"); 64 else 65 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ); 66 } 67 } 68 69 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA, 70 const InputInfo &Output, 71 const InputInfoList &Inputs, 72 const ArgList &Args, 73 const char *LinkingOutput) const { 74 const Driver &D = getToolChain().getDriver(); 75 ArgStringList CmdArgs; 76 77 for (const auto &A : Args) { 78 if (forwardToGCC(A->getOption())) { 79 // It is unfortunate that we have to claim here, as this means 80 // we will basically never report anything interesting for 81 // platforms using a generic gcc, even if we are just using gcc 82 // to get to the assembler. 83 A->claim(); 84 85 A->render(Args, CmdArgs); 86 } 87 } 88 89 RenderExtraToolArgs(JA, CmdArgs); 90 91 // If using a driver, force the arch. 92 if (getToolChain().getTriple().isOSDarwin()) { 93 CmdArgs.push_back("-arch"); 94 CmdArgs.push_back( 95 Args.MakeArgString(getToolChain().getDefaultUniversalArchName())); 96 } 97 98 // Try to force gcc to match the tool chain we want, if we recognize 99 // the arch. 100 // 101 // FIXME: The triple class should directly provide the information we want 102 // here. 103 switch (getToolChain().getArch()) { 104 default: 105 break; 106 case llvm::Triple::x86: 107 case llvm::Triple::ppc: 108 case llvm::Triple::ppcle: 109 CmdArgs.push_back("-m32"); 110 break; 111 case llvm::Triple::x86_64: 112 case llvm::Triple::ppc64: 113 case llvm::Triple::ppc64le: 114 CmdArgs.push_back("-m64"); 115 break; 116 case llvm::Triple::sparcel: 117 CmdArgs.push_back("-EL"); 118 break; 119 } 120 121 assert((Output.isFilename() || Output.isNothing()) && "Invalid output."); 122 if (Output.isFilename()) { 123 CmdArgs.push_back("-o"); 124 CmdArgs.push_back(Output.getFilename()); 125 } else { 126 CmdArgs.push_back("-fsyntax-only"); 127 } 128 129 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 130 131 // Only pass -x if gcc will understand it; otherwise hope gcc 132 // understands the suffix correctly. The main use case this would go 133 // wrong in is for linker inputs if they happened to have an odd 134 // suffix; really the only way to get this to happen is a command 135 // like '-x foobar a.c' which will treat a.c like a linker input. 136 // 137 // FIXME: For the linker case specifically, can we safely convert 138 // inputs into '-Wl,' options? 139 for (const auto &II : Inputs) { 140 // Don't try to pass LLVM or AST inputs to a generic gcc. 141 if (types::isLLVMIR(II.getType())) 142 D.Diag(clang::diag::err_drv_no_linker_llvm_support) 143 << getToolChain().getTripleString(); 144 else if (II.getType() == types::TY_AST) 145 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString(); 146 else if (II.getType() == types::TY_ModuleFile) 147 D.Diag(diag::err_drv_no_module_support) 148 << getToolChain().getTripleString(); 149 150 if (types::canTypeBeUserSpecified(II.getType())) { 151 CmdArgs.push_back("-x"); 152 CmdArgs.push_back(types::getTypeName(II.getType())); 153 } 154 155 if (II.isFilename()) 156 CmdArgs.push_back(II.getFilename()); 157 else { 158 const Arg &A = II.getInputArg(); 159 160 // Reverse translate some rewritten options. 161 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) { 162 CmdArgs.push_back("-lstdc++"); 163 continue; 164 } 165 166 // Don't render as input, we need gcc to do the translations. 167 A.render(Args, CmdArgs); 168 } 169 } 170 171 const std::string &customGCCName = D.getCCCGenericGCCName(); 172 const char *GCCName; 173 if (!customGCCName.empty()) 174 GCCName = customGCCName.c_str(); 175 else if (D.CCCIsCXX()) { 176 GCCName = "g++"; 177 } else 178 GCCName = "gcc"; 179 180 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName)); 181 C.addCommand(std::make_unique<Command>(JA, *this, 182 ResponseFileSupport::AtFileCurCP(), 183 Exec, CmdArgs, Inputs, Output)); 184 } 185 186 void tools::gcc::Preprocessor::RenderExtraToolArgs( 187 const JobAction &JA, ArgStringList &CmdArgs) const { 188 CmdArgs.push_back("-E"); 189 } 190 191 void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA, 192 ArgStringList &CmdArgs) const { 193 const Driver &D = getToolChain().getDriver(); 194 195 switch (JA.getType()) { 196 // If -flto, etc. are present then make sure not to force assembly output. 197 case types::TY_LLVM_IR: 198 case types::TY_LTO_IR: 199 case types::TY_LLVM_BC: 200 case types::TY_LTO_BC: 201 CmdArgs.push_back("-c"); 202 break; 203 // We assume we've got an "integrated" assembler in that gcc will produce an 204 // object file itself. 205 case types::TY_Object: 206 CmdArgs.push_back("-c"); 207 break; 208 case types::TY_PP_Asm: 209 CmdArgs.push_back("-S"); 210 break; 211 case types::TY_Nothing: 212 CmdArgs.push_back("-fsyntax-only"); 213 break; 214 default: 215 D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType()); 216 } 217 } 218 219 void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA, 220 ArgStringList &CmdArgs) const { 221 // The types are (hopefully) good enough. 222 } 223 224 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) { 225 switch (T.getArch()) { 226 case llvm::Triple::x86: 227 if (T.isOSIAMCU()) 228 return "elf_iamcu"; 229 return "elf_i386"; 230 case llvm::Triple::aarch64: 231 return "aarch64linux"; 232 case llvm::Triple::aarch64_be: 233 return "aarch64linuxb"; 234 case llvm::Triple::arm: 235 case llvm::Triple::thumb: 236 case llvm::Triple::armeb: 237 case llvm::Triple::thumbeb: 238 return tools::arm::isARMBigEndian(T, Args) ? "armelfb_linux_eabi" 239 : "armelf_linux_eabi"; 240 case llvm::Triple::m68k: 241 return "m68kelf"; 242 case llvm::Triple::ppc: 243 if (T.isOSLinux()) 244 return "elf32ppclinux"; 245 return "elf32ppc"; 246 case llvm::Triple::ppcle: 247 if (T.isOSLinux()) 248 return "elf32lppclinux"; 249 return "elf32lppc"; 250 case llvm::Triple::ppc64: 251 return "elf64ppc"; 252 case llvm::Triple::ppc64le: 253 return "elf64lppc"; 254 case llvm::Triple::riscv32: 255 return "elf32lriscv"; 256 case llvm::Triple::riscv64: 257 return "elf64lriscv"; 258 case llvm::Triple::sparc: 259 case llvm::Triple::sparcel: 260 return "elf32_sparc"; 261 case llvm::Triple::sparcv9: 262 return "elf64_sparc"; 263 case llvm::Triple::loongarch32: 264 return "elf32loongarch"; 265 case llvm::Triple::loongarch64: 266 return "elf64loongarch"; 267 case llvm::Triple::mips: 268 return "elf32btsmip"; 269 case llvm::Triple::mipsel: 270 return "elf32ltsmip"; 271 case llvm::Triple::mips64: 272 if (tools::mips::hasMipsAbiArg(Args, "n32") || 273 T.getEnvironment() == llvm::Triple::GNUABIN32) 274 return "elf32btsmipn32"; 275 return "elf64btsmip"; 276 case llvm::Triple::mips64el: 277 if (tools::mips::hasMipsAbiArg(Args, "n32") || 278 T.getEnvironment() == llvm::Triple::GNUABIN32) 279 return "elf32ltsmipn32"; 280 return "elf64ltsmip"; 281 case llvm::Triple::systemz: 282 return "elf64_s390"; 283 case llvm::Triple::x86_64: 284 if (T.isX32()) 285 return "elf32_x86_64"; 286 return "elf_x86_64"; 287 case llvm::Triple::ve: 288 return "elf64ve"; 289 case llvm::Triple::csky: 290 return "cskyelf_linux"; 291 default: 292 return nullptr; 293 } 294 } 295 296 static bool getStaticPIE(const ArgList &Args, const ToolChain &TC) { 297 bool HasStaticPIE = Args.hasArg(options::OPT_static_pie); 298 if (HasStaticPIE && Args.hasArg(options::OPT_no_pie)) { 299 const Driver &D = TC.getDriver(); 300 const llvm::opt::OptTable &Opts = D.getOpts(); 301 StringRef StaticPIEName = Opts.getOptionName(options::OPT_static_pie); 302 StringRef NoPIEName = Opts.getOptionName(options::OPT_nopie); 303 D.Diag(diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName; 304 } 305 return HasStaticPIE; 306 } 307 308 static bool getStatic(const ArgList &Args) { 309 return Args.hasArg(options::OPT_static) && 310 !Args.hasArg(options::OPT_static_pie); 311 } 312 313 void tools::gnutools::StaticLibTool::ConstructJob( 314 Compilation &C, const JobAction &JA, const InputInfo &Output, 315 const InputInfoList &Inputs, const ArgList &Args, 316 const char *LinkingOutput) const { 317 const Driver &D = getToolChain().getDriver(); 318 319 // Silence warning for "clang -g foo.o -o foo" 320 Args.ClaimAllArgs(options::OPT_g_Group); 321 // and "clang -emit-llvm foo.o -o foo" 322 Args.ClaimAllArgs(options::OPT_emit_llvm); 323 // and for "clang -w foo.o -o foo". Other warning options are already 324 // handled somewhere else. 325 Args.ClaimAllArgs(options::OPT_w); 326 // Silence warnings when linking C code with a C++ '-stdlib' argument. 327 Args.ClaimAllArgs(options::OPT_stdlib_EQ); 328 329 // ar tool command "llvm-ar <options> <output_file> <input_files>". 330 ArgStringList CmdArgs; 331 // Create and insert file members with a deterministic index. 332 CmdArgs.push_back("rcsD"); 333 CmdArgs.push_back(Output.getFilename()); 334 335 for (const auto &II : Inputs) { 336 if (II.isFilename()) { 337 CmdArgs.push_back(II.getFilename()); 338 } 339 } 340 341 // Delete old output archive file if it already exists before generating a new 342 // archive file. 343 auto OutputFileName = Output.getFilename(); 344 if (Output.isFilename() && llvm::sys::fs::exists(OutputFileName)) { 345 if (std::error_code EC = llvm::sys::fs::remove(OutputFileName)) { 346 D.Diag(diag::err_drv_unable_to_remove_file) << EC.message(); 347 return; 348 } 349 } 350 351 const char *Exec = Args.MakeArgString(getToolChain().GetStaticLibToolPath()); 352 C.addCommand(std::make_unique<Command>(JA, *this, 353 ResponseFileSupport::AtFileCurCP(), 354 Exec, CmdArgs, Inputs, Output)); 355 } 356 357 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA, 358 const InputInfo &Output, 359 const InputInfoList &Inputs, 360 const ArgList &Args, 361 const char *LinkingOutput) const { 362 // FIXME: The Linker class constructor takes a ToolChain and not a 363 // Generic_ELF, so the static_cast might return a reference to a invalid 364 // instance (see PR45061). Ideally, the Linker constructor needs to take a 365 // Generic_ELF instead. 366 const auto &ToolChain = static_cast<const Generic_ELF &>(getToolChain()); 367 const Driver &D = ToolChain.getDriver(); 368 369 const llvm::Triple &Triple = getToolChain().getEffectiveTriple(); 370 371 const llvm::Triple::ArchType Arch = ToolChain.getArch(); 372 const bool isOHOSFamily = ToolChain.getTriple().isOHOSFamily(); 373 const bool isAndroid = ToolChain.getTriple().isAndroid(); 374 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU(); 375 const bool IsVE = ToolChain.getTriple().isVE(); 376 const bool IsStaticPIE = getStaticPIE(Args, ToolChain); 377 const bool IsStatic = getStatic(Args); 378 const bool HasCRTBeginEndFiles = 379 ToolChain.getTriple().hasEnvironment() || 380 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies); 381 382 ArgStringList CmdArgs; 383 384 // Silence warning for "clang -g foo.o -o foo" 385 Args.ClaimAllArgs(options::OPT_g_Group); 386 // and "clang -emit-llvm foo.o -o foo" 387 Args.ClaimAllArgs(options::OPT_emit_llvm); 388 // and for "clang -w foo.o -o foo". Other warning options are already 389 // handled somewhere else. 390 Args.ClaimAllArgs(options::OPT_w); 391 392 if (!D.SysRoot.empty()) 393 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 394 395 if (Args.hasArg(options::OPT_s)) 396 CmdArgs.push_back("-s"); 397 398 if (Triple.isARM() || Triple.isThumb()) { 399 bool IsBigEndian = arm::isARMBigEndian(Triple, Args); 400 if (IsBigEndian) 401 arm::appendBE8LinkFlag(Args, CmdArgs, Triple); 402 CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL"); 403 } else if (Triple.isAArch64()) { 404 CmdArgs.push_back(Arch == llvm::Triple::aarch64_be ? "-EB" : "-EL"); 405 } 406 407 // Most Android ARM64 targets should enable the linker fix for erratum 408 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag. 409 if (Arch == llvm::Triple::aarch64 && (isAndroid || isOHOSFamily)) { 410 std::string CPU = getCPUName(D, Args, Triple); 411 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53") 412 CmdArgs.push_back("--fix-cortex-a53-843419"); 413 } 414 415 ToolChain.addExtraOpts(CmdArgs); 416 417 CmdArgs.push_back("--eh-frame-hdr"); 418 419 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) { 420 CmdArgs.push_back("-m"); 421 CmdArgs.push_back(LDMOption); 422 } else { 423 D.Diag(diag::err_target_unknown_triple) << Triple.str(); 424 return; 425 } 426 if (Triple.isRISCV()) 427 CmdArgs.push_back("-X"); 428 429 const bool IsShared = Args.hasArg(options::OPT_shared); 430 if (IsShared) 431 CmdArgs.push_back("-shared"); 432 bool IsPIE = false; 433 if (IsStaticPIE) { 434 CmdArgs.push_back("-static"); 435 CmdArgs.push_back("-pie"); 436 CmdArgs.push_back("--no-dynamic-linker"); 437 CmdArgs.push_back("-z"); 438 CmdArgs.push_back("text"); 439 } else if (IsStatic) { 440 CmdArgs.push_back("-static"); 441 } else if (!Args.hasArg(options::OPT_r)) { 442 if (Args.hasArg(options::OPT_rdynamic)) 443 CmdArgs.push_back("-export-dynamic"); 444 if (!IsShared) { 445 IsPIE = Args.hasFlag(options::OPT_pie, options::OPT_no_pie, 446 ToolChain.isPIEDefault(Args)); 447 if (IsPIE) 448 CmdArgs.push_back("-pie"); 449 CmdArgs.push_back("-dynamic-linker"); 450 CmdArgs.push_back(Args.MakeArgString(Twine(D.DyldPrefix) + 451 ToolChain.getDynamicLinker(Args))); 452 } 453 } 454 455 CmdArgs.push_back("-o"); 456 CmdArgs.push_back(Output.getFilename()); 457 458 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles, 459 options::OPT_r)) { 460 if (!isAndroid && !IsIAMCU) { 461 const char *crt1 = nullptr; 462 if (!Args.hasArg(options::OPT_shared)) { 463 if (Args.hasArg(options::OPT_pg)) 464 crt1 = "gcrt1.o"; 465 else if (IsPIE) 466 crt1 = "Scrt1.o"; 467 else if (IsStaticPIE) 468 crt1 = "rcrt1.o"; 469 else 470 crt1 = "crt1.o"; 471 } 472 if (crt1) 473 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1))); 474 475 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o"))); 476 } 477 478 if (IsVE) { 479 CmdArgs.push_back("-z"); 480 CmdArgs.push_back("max-page-size=0x4000000"); 481 } 482 483 if (IsIAMCU) 484 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o"))); 485 else if (HasCRTBeginEndFiles) { 486 std::string P; 487 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT && 488 !isAndroid) { 489 std::string crtbegin = ToolChain.getCompilerRT(Args, "crtbegin", 490 ToolChain::FT_Object); 491 if (ToolChain.getVFS().exists(crtbegin)) 492 P = crtbegin; 493 } 494 if (P.empty()) { 495 const char *crtbegin; 496 if (Args.hasArg(options::OPT_shared)) 497 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o"; 498 else if (IsStatic) 499 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o"; 500 else if (IsPIE || IsStaticPIE) 501 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o"; 502 else 503 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o"; 504 P = ToolChain.GetFilePath(crtbegin); 505 } 506 CmdArgs.push_back(Args.MakeArgString(P)); 507 } 508 509 // Add crtfastmath.o if available and fast math is enabled. 510 ToolChain.addFastMathRuntimeIfAvailable(Args, CmdArgs); 511 } 512 513 Args.addAllArgs(CmdArgs, {options::OPT_L, options::OPT_u}); 514 515 ToolChain.AddFilePathLibArgs(Args, CmdArgs); 516 517 if (D.isUsingLTO()) { 518 assert(!Inputs.empty() && "Must have at least one input."); 519 // Find the first filename InputInfo object. 520 auto Input = llvm::find_if( 521 Inputs, [](const InputInfo &II) -> bool { return II.isFilename(); }); 522 if (Input == Inputs.end()) 523 // For a very rare case, all of the inputs to the linker are 524 // InputArg. If that happens, just use the first InputInfo. 525 Input = Inputs.begin(); 526 527 addLTOOptions(ToolChain, Args, CmdArgs, Output, *Input, 528 D.getLTOMode() == LTOK_Thin); 529 } 530 531 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle)) 532 CmdArgs.push_back("--no-demangle"); 533 534 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs); 535 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs); 536 addLinkerCompressDebugSectionsOption(ToolChain, Args, CmdArgs); 537 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA); 538 539 addHIPRuntimeLibArgs(ToolChain, C, Args, CmdArgs); 540 541 // The profile runtime also needs access to system libraries. 542 getToolChain().addProfileRTLibs(Args, CmdArgs); 543 544 if (D.CCCIsCXX() && 545 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs, 546 options::OPT_r)) { 547 if (ToolChain.ShouldLinkCXXStdlib(Args)) { 548 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) && 549 !Args.hasArg(options::OPT_static); 550 if (OnlyLibstdcxxStatic) 551 CmdArgs.push_back("-Bstatic"); 552 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs); 553 if (OnlyLibstdcxxStatic) 554 CmdArgs.push_back("-Bdynamic"); 555 } 556 CmdArgs.push_back("-lm"); 557 } 558 559 // Silence warnings when linking C code with a C++ '-stdlib' argument. 560 Args.ClaimAllArgs(options::OPT_stdlib_EQ); 561 562 // Additional linker set-up and flags for Fortran. This is required in order 563 // to generate executables. As Fortran runtime depends on the C runtime, 564 // these dependencies need to be listed before the C runtime below (i.e. 565 // AddRunTimeLibs). 566 if (D.IsFlangMode()) { 567 addFortranRuntimeLibraryPath(ToolChain, Args, CmdArgs); 568 addFortranRuntimeLibs(ToolChain, Args, CmdArgs); 569 CmdArgs.push_back("-lm"); 570 } 571 572 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_r)) { 573 if (!Args.hasArg(options::OPT_nodefaultlibs)) { 574 if (IsStatic || IsStaticPIE) 575 CmdArgs.push_back("--start-group"); 576 577 if (NeedsSanitizerDeps) 578 linkSanitizerRuntimeDeps(ToolChain, Args, CmdArgs); 579 580 if (NeedsXRayDeps) 581 linkXRayRuntimeDeps(ToolChain, Args, CmdArgs); 582 583 bool WantPthread = Args.hasArg(options::OPT_pthread) || 584 Args.hasArg(options::OPT_pthreads); 585 586 // Use the static OpenMP runtime with -static-openmp 587 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) && 588 !Args.hasArg(options::OPT_static); 589 590 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that 591 // require librt. Most modern Linux platforms do, but some may not. 592 if (addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP, 593 JA.isHostOffloading(Action::OFK_OpenMP), 594 /* GompNeedsRT= */ true)) 595 // OpenMP runtimes implies pthreads when using the GNU toolchain. 596 // FIXME: Does this really make sense for all GNU toolchains? 597 WantPthread = true; 598 599 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 600 601 // LLVM support for atomics on 32-bit SPARC V8+ is incomplete, so 602 // forcibly link with libatomic as a workaround. 603 // TODO: Issue #41880 and D118021. 604 if (getToolChain().getTriple().getArch() == llvm::Triple::sparc) { 605 CmdArgs.push_back("--push-state"); 606 CmdArgs.push_back("--as-needed"); 607 CmdArgs.push_back("-latomic"); 608 CmdArgs.push_back("--pop-state"); 609 } 610 611 // We don't need libpthread neither for bionic (Android) nor for musl, 612 // (used by OHOS as runtime library). 613 if (WantPthread && !isAndroid && !isOHOSFamily) 614 CmdArgs.push_back("-lpthread"); 615 616 if (Args.hasArg(options::OPT_fsplit_stack)) 617 CmdArgs.push_back("--wrap=pthread_create"); 618 619 if (!Args.hasArg(options::OPT_nolibc)) 620 CmdArgs.push_back("-lc"); 621 622 // Add IAMCU specific libs, if needed. 623 if (IsIAMCU) 624 CmdArgs.push_back("-lgloss"); 625 626 if (IsStatic || IsStaticPIE) 627 CmdArgs.push_back("--end-group"); 628 else 629 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 630 631 // Add IAMCU specific libs (outside the group), if needed. 632 if (IsIAMCU) { 633 CmdArgs.push_back("--as-needed"); 634 CmdArgs.push_back("-lsoftfp"); 635 CmdArgs.push_back("--no-as-needed"); 636 } 637 } 638 639 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) { 640 if (HasCRTBeginEndFiles) { 641 std::string P; 642 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT && 643 !isAndroid) { 644 std::string crtend = ToolChain.getCompilerRT(Args, "crtend", 645 ToolChain::FT_Object); 646 if (ToolChain.getVFS().exists(crtend)) 647 P = crtend; 648 } 649 if (P.empty()) { 650 const char *crtend; 651 if (Args.hasArg(options::OPT_shared)) 652 crtend = isAndroid ? "crtend_so.o" : "crtendS.o"; 653 else if (IsPIE || IsStaticPIE) 654 crtend = isAndroid ? "crtend_android.o" : "crtendS.o"; 655 else 656 crtend = isAndroid ? "crtend_android.o" : "crtend.o"; 657 P = ToolChain.GetFilePath(crtend); 658 } 659 CmdArgs.push_back(Args.MakeArgString(P)); 660 } 661 if (!isAndroid) 662 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o"))); 663 } 664 } 665 666 Args.AddAllArgs(CmdArgs, options::OPT_T); 667 668 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath()); 669 C.addCommand(std::make_unique<Command>(JA, *this, 670 ResponseFileSupport::AtFileCurCP(), 671 Exec, CmdArgs, Inputs, Output)); 672 } 673 674 void tools::gnutools::Assembler::ConstructJob(Compilation &C, 675 const JobAction &JA, 676 const InputInfo &Output, 677 const InputInfoList &Inputs, 678 const ArgList &Args, 679 const char *LinkingOutput) const { 680 const auto &D = getToolChain().getDriver(); 681 682 claimNoWarnArgs(Args); 683 684 ArgStringList CmdArgs; 685 686 llvm::Reloc::Model RelocationModel; 687 unsigned PICLevel; 688 bool IsPIE; 689 const char *DefaultAssembler = "as"; 690 // Enforce GNU as on Solaris; the native assembler's input syntax isn't fully 691 // compatible. 692 if (getToolChain().getTriple().isOSSolaris()) 693 DefaultAssembler = "gas"; 694 std::tie(RelocationModel, PICLevel, IsPIE) = 695 ParsePICArgs(getToolChain(), Args); 696 697 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) { 698 if (A->getOption().getID() == options::OPT_gz) { 699 CmdArgs.push_back("--compress-debug-sections"); 700 } else { 701 StringRef Value = A->getValue(); 702 if (Value == "none" || Value == "zlib" || Value == "zstd") { 703 CmdArgs.push_back( 704 Args.MakeArgString("--compress-debug-sections=" + Twine(Value))); 705 } else { 706 D.Diag(diag::err_drv_unsupported_option_argument) 707 << A->getSpelling() << Value; 708 } 709 } 710 } 711 712 switch (getToolChain().getArch()) { 713 default: 714 break; 715 // Add --32/--64 to make sure we get the format we want. 716 // This is incomplete 717 case llvm::Triple::x86: 718 CmdArgs.push_back("--32"); 719 break; 720 case llvm::Triple::x86_64: 721 if (getToolChain().getTriple().isX32()) 722 CmdArgs.push_back("--x32"); 723 else 724 CmdArgs.push_back("--64"); 725 break; 726 case llvm::Triple::ppc: { 727 CmdArgs.push_back("-a32"); 728 CmdArgs.push_back("-mppc"); 729 CmdArgs.push_back("-mbig-endian"); 730 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 731 getCPUName(D, Args, getToolChain().getTriple()))); 732 break; 733 } 734 case llvm::Triple::ppcle: { 735 CmdArgs.push_back("-a32"); 736 CmdArgs.push_back("-mppc"); 737 CmdArgs.push_back("-mlittle-endian"); 738 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 739 getCPUName(D, Args, getToolChain().getTriple()))); 740 break; 741 } 742 case llvm::Triple::ppc64: { 743 CmdArgs.push_back("-a64"); 744 CmdArgs.push_back("-mppc64"); 745 CmdArgs.push_back("-mbig-endian"); 746 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 747 getCPUName(D, Args, getToolChain().getTriple()))); 748 break; 749 } 750 case llvm::Triple::ppc64le: { 751 CmdArgs.push_back("-a64"); 752 CmdArgs.push_back("-mppc64"); 753 CmdArgs.push_back("-mlittle-endian"); 754 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 755 getCPUName(D, Args, getToolChain().getTriple()))); 756 break; 757 } 758 case llvm::Triple::riscv32: 759 case llvm::Triple::riscv64: { 760 StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple()); 761 CmdArgs.push_back("-mabi"); 762 CmdArgs.push_back(ABIName.data()); 763 StringRef MArchName = riscv::getRISCVArch(Args, getToolChain().getTriple()); 764 CmdArgs.push_back("-march"); 765 CmdArgs.push_back(MArchName.data()); 766 if (!Args.hasFlag(options::OPT_mrelax, options::OPT_mno_relax, true)) 767 Args.addOptOutFlag(CmdArgs, options::OPT_mrelax, options::OPT_mno_relax); 768 break; 769 } 770 case llvm::Triple::sparc: 771 case llvm::Triple::sparcel: { 772 CmdArgs.push_back("-32"); 773 std::string CPU = getCPUName(D, Args, getToolChain().getTriple()); 774 CmdArgs.push_back( 775 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 776 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 777 break; 778 } 779 case llvm::Triple::sparcv9: { 780 CmdArgs.push_back("-64"); 781 std::string CPU = getCPUName(D, Args, getToolChain().getTriple()); 782 CmdArgs.push_back( 783 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 784 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 785 break; 786 } 787 case llvm::Triple::arm: 788 case llvm::Triple::armeb: 789 case llvm::Triple::thumb: 790 case llvm::Triple::thumbeb: { 791 const llvm::Triple &Triple2 = getToolChain().getTriple(); 792 CmdArgs.push_back(arm::isARMBigEndian(Triple2, Args) ? "-EB" : "-EL"); 793 switch (Triple2.getSubArch()) { 794 case llvm::Triple::ARMSubArch_v7: 795 CmdArgs.push_back("-mfpu=neon"); 796 break; 797 case llvm::Triple::ARMSubArch_v8: 798 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8"); 799 break; 800 default: 801 break; 802 } 803 804 switch (arm::getARMFloatABI(getToolChain(), Args)) { 805 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!"); 806 case arm::FloatABI::Soft: 807 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft")); 808 break; 809 case arm::FloatABI::SoftFP: 810 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp")); 811 break; 812 case arm::FloatABI::Hard: 813 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard")); 814 break; 815 } 816 817 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 818 normalizeCPUNamesForAssembler(Args, CmdArgs); 819 820 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ); 821 // The integrated assembler doesn't implement e_flags setting behavior for 822 // -meabi=gnu (gcc -mabi={apcs-gnu,atpcs} passes -meabi=gnu to gas). For 823 // compatibility we accept but warn. 824 if (Arg *A = Args.getLastArgNoClaim(options::OPT_mabi_EQ)) 825 A->ignoreTargetSpecific(); 826 break; 827 } 828 case llvm::Triple::aarch64: 829 case llvm::Triple::aarch64_be: { 830 CmdArgs.push_back( 831 getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL"); 832 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 833 normalizeCPUNamesForAssembler(Args, CmdArgs); 834 835 break; 836 } 837 // TODO: handle loongarch32. 838 case llvm::Triple::loongarch64: { 839 StringRef ABIName = 840 loongarch::getLoongArchABI(D, Args, getToolChain().getTriple()); 841 CmdArgs.push_back(Args.MakeArgString("-mabi=" + ABIName)); 842 break; 843 } 844 case llvm::Triple::mips: 845 case llvm::Triple::mipsel: 846 case llvm::Triple::mips64: 847 case llvm::Triple::mips64el: { 848 StringRef CPUName; 849 StringRef ABIName; 850 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName); 851 ABIName = mips::getGnuCompatibleMipsABIName(ABIName); 852 853 CmdArgs.push_back("-march"); 854 CmdArgs.push_back(CPUName.data()); 855 856 CmdArgs.push_back("-mabi"); 857 CmdArgs.push_back(ABIName.data()); 858 859 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE, 860 // or -mshared (not implemented) is in effect. 861 if (RelocationModel == llvm::Reloc::Static) 862 CmdArgs.push_back("-mno-shared"); 863 864 // LLVM doesn't support -mplt yet and acts as if it is always given. 865 // However, -mplt has no effect with the N64 ABI. 866 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls)) 867 CmdArgs.push_back("-call_nonpic"); 868 869 if (getToolChain().getTriple().isLittleEndian()) 870 CmdArgs.push_back("-EL"); 871 else 872 CmdArgs.push_back("-EB"); 873 874 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) { 875 if (StringRef(A->getValue()) == "2008") 876 CmdArgs.push_back(Args.MakeArgString("-mnan=2008")); 877 } 878 879 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default. 880 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx, 881 options::OPT_mfp64)) { 882 A->claim(); 883 A->render(Args, CmdArgs); 884 } else if (mips::shouldUseFPXX( 885 Args, getToolChain().getTriple(), CPUName, ABIName, 886 mips::getMipsFloatABI(getToolChain().getDriver(), Args, 887 getToolChain().getTriple()))) 888 CmdArgs.push_back("-mfpxx"); 889 890 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of 891 // -mno-mips16 is actually -no-mips16. 892 if (Arg *A = 893 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) { 894 if (A->getOption().matches(options::OPT_mips16)) { 895 A->claim(); 896 A->render(Args, CmdArgs); 897 } else { 898 A->claim(); 899 CmdArgs.push_back("-no-mips16"); 900 } 901 } 902 903 Args.AddLastArg(CmdArgs, options::OPT_mmicromips, 904 options::OPT_mno_micromips); 905 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp); 906 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2); 907 908 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) { 909 // Do not use AddLastArg because not all versions of MIPS assembler 910 // support -mmsa / -mno-msa options. 911 if (A->getOption().matches(options::OPT_mmsa)) 912 CmdArgs.push_back(Args.MakeArgString("-mmsa")); 913 } 914 915 Args.AddLastArg(CmdArgs, options::OPT_mhard_float, 916 options::OPT_msoft_float); 917 918 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float, 919 options::OPT_msingle_float); 920 921 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg, 922 options::OPT_mno_odd_spreg); 923 924 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 925 break; 926 } 927 case llvm::Triple::systemz: { 928 // Always pass an -march option, since our default of z10 is later 929 // than the GNU assembler's default. 930 std::string CPUName = systemz::getSystemZTargetCPU(Args); 931 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName)); 932 break; 933 } 934 case llvm::Triple::ve: 935 DefaultAssembler = "nas"; 936 } 937 938 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ, 939 options::OPT_fdebug_prefix_map_EQ)) { 940 StringRef Map = A->getValue(); 941 if (!Map.contains('=')) 942 D.Diag(diag::err_drv_invalid_argument_to_option) 943 << Map << A->getOption().getName(); 944 else { 945 CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map")); 946 CmdArgs.push_back(Args.MakeArgString(Map)); 947 } 948 A->claim(); 949 } 950 951 Args.AddAllArgs(CmdArgs, options::OPT_I); 952 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 953 954 CmdArgs.push_back("-o"); 955 CmdArgs.push_back(Output.getFilename()); 956 957 for (const auto &II : Inputs) 958 CmdArgs.push_back(II.getFilename()); 959 960 if (Arg *A = Args.getLastArg(options::OPT_g_Flag, options::OPT_gN_Group, 961 options::OPT_gdwarf_2, options::OPT_gdwarf_3, 962 options::OPT_gdwarf_4, options::OPT_gdwarf_5, 963 options::OPT_gdwarf)) 964 if (!A->getOption().matches(options::OPT_g0)) { 965 Args.AddLastArg(CmdArgs, options::OPT_g_Flag); 966 967 unsigned DwarfVersion = getDwarfVersion(getToolChain(), Args); 968 CmdArgs.push_back(Args.MakeArgString("-gdwarf-" + Twine(DwarfVersion))); 969 } 970 971 const char *Exec = 972 Args.MakeArgString(getToolChain().GetProgramPath(DefaultAssembler)); 973 C.addCommand(std::make_unique<Command>(JA, *this, 974 ResponseFileSupport::AtFileCurCP(), 975 Exec, CmdArgs, Inputs, Output)); 976 977 // Handle the debug info splitting at object creation time if we're 978 // creating an object. 979 // TODO: Currently only works on linux with newer objcopy. 980 if (Args.hasArg(options::OPT_gsplit_dwarf) && 981 getToolChain().getTriple().isOSLinux()) 982 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, 983 SplitDebugName(JA, Args, Inputs[0], Output)); 984 } 985 986 namespace { 987 // Filter to remove Multilibs that don't exist as a suffix to Path 988 class FilterNonExistent { 989 StringRef Base, File; 990 llvm::vfs::FileSystem &VFS; 991 992 public: 993 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS) 994 : Base(Base), File(File), VFS(VFS) {} 995 bool operator()(const Multilib &M) { 996 return !VFS.exists(Base + M.gccSuffix() + File); 997 } 998 }; 999 } // end anonymous namespace 1000 1001 static bool isSoftFloatABI(const ArgList &Args) { 1002 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float, 1003 options::OPT_mfloat_abi_EQ); 1004 if (!A) 1005 return false; 1006 1007 return A->getOption().matches(options::OPT_msoft_float) || 1008 (A->getOption().matches(options::OPT_mfloat_abi_EQ) && 1009 A->getValue() == StringRef("soft")); 1010 } 1011 1012 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) { 1013 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb; 1014 } 1015 1016 static bool isMipsEL(llvm::Triple::ArchType Arch) { 1017 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el; 1018 } 1019 1020 static bool isMips16(const ArgList &Args) { 1021 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16); 1022 return A && A->getOption().matches(options::OPT_mips16); 1023 } 1024 1025 static bool isMicroMips(const ArgList &Args) { 1026 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips); 1027 return A && A->getOption().matches(options::OPT_mmicromips); 1028 } 1029 1030 static bool isMSP430(llvm::Triple::ArchType Arch) { 1031 return Arch == llvm::Triple::msp430; 1032 } 1033 1034 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags, 1035 FilterNonExistent &NonExistent, 1036 DetectedMultilibs &Result) { 1037 // Check for Code Sourcery toolchain multilibs 1038 MultilibSet CSMipsMultilibs; 1039 { 1040 auto MArchMips16 = MultilibBuilder("/mips16").flag("-m32").flag("-mips16"); 1041 1042 auto MArchMicroMips = 1043 MultilibBuilder("/micromips").flag("-m32").flag("-mmicromips"); 1044 1045 auto MArchDefault = MultilibBuilder("") 1046 .flag("-mips16", /*Disallow=*/true) 1047 .flag("-mmicromips", /*Disallow=*/true); 1048 1049 auto UCLibc = MultilibBuilder("/uclibc").flag("-muclibc"); 1050 1051 auto SoftFloat = MultilibBuilder("/soft-float").flag("-msoft-float"); 1052 1053 auto Nan2008 = MultilibBuilder("/nan2008").flag("-mnan=2008"); 1054 1055 auto DefaultFloat = MultilibBuilder("") 1056 .flag("-msoft-float", /*Disallow=*/true) 1057 .flag("-mnan=2008", /*Disallow=*/true); 1058 1059 auto BigEndian = 1060 MultilibBuilder("").flag("-EB").flag("-EL", /*Disallow=*/true); 1061 1062 auto LittleEndian = 1063 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true); 1064 1065 // Note that this one's osSuffix is "" 1066 auto MAbi64 = MultilibBuilder("") 1067 .gccSuffix("/64") 1068 .includeSuffix("/64") 1069 .flag("-mabi=n64") 1070 .flag("-mabi=n32", /*Disallow=*/true) 1071 .flag("-m32", /*Disallow=*/true); 1072 1073 CSMipsMultilibs = 1074 MultilibSetBuilder() 1075 .Either(MArchMips16, MArchMicroMips, MArchDefault) 1076 .Maybe(UCLibc) 1077 .Either(SoftFloat, Nan2008, DefaultFloat) 1078 .FilterOut("/micromips/nan2008") 1079 .FilterOut("/mips16/nan2008") 1080 .Either(BigEndian, LittleEndian) 1081 .Maybe(MAbi64) 1082 .FilterOut("/mips16.*/64") 1083 .FilterOut("/micromips.*/64") 1084 .makeMultilibSet() 1085 .FilterOut(NonExistent) 1086 .setIncludeDirsCallback([](const Multilib &M) { 1087 std::vector<std::string> Dirs({"/include"}); 1088 if (StringRef(M.includeSuffix()).starts_with("/uclibc")) 1089 Dirs.push_back( 1090 "/../../../../mips-linux-gnu/libc/uclibc/usr/include"); 1091 else 1092 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include"); 1093 return Dirs; 1094 }); 1095 } 1096 1097 MultilibSet DebianMipsMultilibs; 1098 { 1099 MultilibBuilder MAbiN32 = 1100 MultilibBuilder().gccSuffix("/n32").includeSuffix("/n32").flag( 1101 "-mabi=n32"); 1102 1103 MultilibBuilder M64 = MultilibBuilder() 1104 .gccSuffix("/64") 1105 .includeSuffix("/64") 1106 .flag("-m64") 1107 .flag("-m32", /*Disallow=*/true) 1108 .flag("-mabi=n32", /*Disallow=*/true); 1109 1110 MultilibBuilder M32 = MultilibBuilder() 1111 .gccSuffix("/32") 1112 .flag("-m64", /*Disallow=*/true) 1113 .flag("-m32") 1114 .flag("-mabi=n32", /*Disallow=*/true); 1115 1116 DebianMipsMultilibs = MultilibSetBuilder() 1117 .Either(M32, M64, MAbiN32) 1118 .makeMultilibSet() 1119 .FilterOut(NonExistent); 1120 } 1121 1122 // Sort candidates. Toolchain that best meets the directories tree goes first. 1123 // Then select the first toolchains matches command line flags. 1124 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs}; 1125 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size()) 1126 std::iter_swap(Candidates, Candidates + 1); 1127 for (const MultilibSet *Candidate : Candidates) { 1128 if (Candidate->select(Flags, Result.SelectedMultilibs)) { 1129 if (Candidate == &DebianMipsMultilibs) 1130 Result.BiarchSibling = Multilib(); 1131 Result.Multilibs = *Candidate; 1132 return true; 1133 } 1134 } 1135 return false; 1136 } 1137 1138 static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path, 1139 const Multilib::flags_list &Flags, 1140 FilterNonExistent &NonExistent, 1141 DetectedMultilibs &Result) { 1142 1143 MultilibSet AndroidMipsMultilibs = 1144 MultilibSetBuilder() 1145 .Maybe(MultilibBuilder("/mips-r2", {}, {}).flag("-march=mips32r2")) 1146 .Maybe(MultilibBuilder("/mips-r6", {}, {}).flag("-march=mips32r6")) 1147 .makeMultilibSet() 1148 .FilterOut(NonExistent); 1149 1150 MultilibSet AndroidMipselMultilibs = 1151 MultilibSetBuilder() 1152 .Either(MultilibBuilder().flag("-march=mips32"), 1153 MultilibBuilder("/mips-r2", "", "/mips-r2") 1154 .flag("-march=mips32r2"), 1155 MultilibBuilder("/mips-r6", "", "/mips-r6") 1156 .flag("-march=mips32r6")) 1157 .makeMultilibSet() 1158 .FilterOut(NonExistent); 1159 1160 MultilibSet AndroidMips64elMultilibs = 1161 MultilibSetBuilder() 1162 .Either(MultilibBuilder().flag("-march=mips64r6"), 1163 MultilibBuilder("/32/mips-r1", "", "/mips-r1") 1164 .flag("-march=mips32"), 1165 MultilibBuilder("/32/mips-r2", "", "/mips-r2") 1166 .flag("-march=mips32r2"), 1167 MultilibBuilder("/32/mips-r6", "", "/mips-r6") 1168 .flag("-march=mips32r6")) 1169 .makeMultilibSet() 1170 .FilterOut(NonExistent); 1171 1172 MultilibSet *MS = &AndroidMipsMultilibs; 1173 if (VFS.exists(Path + "/mips-r6")) 1174 MS = &AndroidMipselMultilibs; 1175 else if (VFS.exists(Path + "/32")) 1176 MS = &AndroidMips64elMultilibs; 1177 if (MS->select(Flags, Result.SelectedMultilibs)) { 1178 Result.Multilibs = *MS; 1179 return true; 1180 } 1181 return false; 1182 } 1183 1184 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags, 1185 FilterNonExistent &NonExistent, 1186 DetectedMultilibs &Result) { 1187 // Musl toolchain multilibs 1188 MultilibSet MuslMipsMultilibs; 1189 { 1190 auto MArchMipsR2 = MultilibBuilder("") 1191 .osSuffix("/mips-r2-hard-musl") 1192 .flag("-EB") 1193 .flag("-EL", /*Disallow=*/true) 1194 .flag("-march=mips32r2"); 1195 1196 auto MArchMipselR2 = MultilibBuilder("/mipsel-r2-hard-musl") 1197 .flag("-EB", /*Disallow=*/true) 1198 .flag("-EL") 1199 .flag("-march=mips32r2"); 1200 1201 MuslMipsMultilibs = MultilibSetBuilder() 1202 .Either(MArchMipsR2, MArchMipselR2) 1203 .makeMultilibSet(); 1204 1205 // Specify the callback that computes the include directories. 1206 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) { 1207 return std::vector<std::string>( 1208 {"/../sysroot" + M.osSuffix() + "/usr/include"}); 1209 }); 1210 } 1211 if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilibs)) { 1212 Result.Multilibs = MuslMipsMultilibs; 1213 return true; 1214 } 1215 return false; 1216 } 1217 1218 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags, 1219 FilterNonExistent &NonExistent, 1220 DetectedMultilibs &Result) { 1221 // CodeScape MTI toolchain v1.2 and early. 1222 MultilibSet MtiMipsMultilibsV1; 1223 { 1224 auto MArchMips32 = MultilibBuilder("/mips32") 1225 .flag("-m32") 1226 .flag("-m64", /*Disallow=*/true) 1227 .flag("-mmicromips", /*Disallow=*/true) 1228 .flag("-march=mips32"); 1229 1230 auto MArchMicroMips = MultilibBuilder("/micromips") 1231 .flag("-m32") 1232 .flag("-m64", /*Disallow=*/true) 1233 .flag("-mmicromips"); 1234 1235 auto MArchMips64r2 = MultilibBuilder("/mips64r2") 1236 .flag("-m32", /*Disallow=*/true) 1237 .flag("-m64") 1238 .flag("-march=mips64r2"); 1239 1240 auto MArchMips64 = MultilibBuilder("/mips64") 1241 .flag("-m32", /*Disallow=*/true) 1242 .flag("-m64") 1243 .flag("-march=mips64r2", /*Disallow=*/true); 1244 1245 auto MArchDefault = MultilibBuilder("") 1246 .flag("-m32") 1247 .flag("-m64", /*Disallow=*/true) 1248 .flag("-mmicromips", /*Disallow=*/true) 1249 .flag("-march=mips32r2"); 1250 1251 auto Mips16 = MultilibBuilder("/mips16").flag("-mips16"); 1252 1253 auto UCLibc = MultilibBuilder("/uclibc").flag("-muclibc"); 1254 1255 auto MAbi64 = MultilibBuilder("/64") 1256 .flag("-mabi=n64") 1257 .flag("-mabi=n32", /*Disallow=*/true) 1258 .flag("-m32", /*Disallow=*/true); 1259 1260 auto BigEndian = 1261 MultilibBuilder("").flag("-EB").flag("-EL", /*Disallow=*/true); 1262 1263 auto LittleEndian = 1264 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true); 1265 1266 auto SoftFloat = MultilibBuilder("/sof").flag("-msoft-float"); 1267 1268 auto Nan2008 = MultilibBuilder("/nan2008").flag("-mnan=2008"); 1269 1270 MtiMipsMultilibsV1 = 1271 MultilibSetBuilder() 1272 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64, 1273 MArchDefault) 1274 .Maybe(UCLibc) 1275 .Maybe(Mips16) 1276 .FilterOut("/mips64/mips16") 1277 .FilterOut("/mips64r2/mips16") 1278 .FilterOut("/micromips/mips16") 1279 .Maybe(MAbi64) 1280 .FilterOut("/micromips/64") 1281 .FilterOut("/mips32/64") 1282 .FilterOut("^/64") 1283 .FilterOut("/mips16/64") 1284 .Either(BigEndian, LittleEndian) 1285 .Maybe(SoftFloat) 1286 .Maybe(Nan2008) 1287 .FilterOut(".*sof/nan2008") 1288 .makeMultilibSet() 1289 .FilterOut(NonExistent) 1290 .setIncludeDirsCallback([](const Multilib &M) { 1291 std::vector<std::string> Dirs({"/include"}); 1292 if (StringRef(M.includeSuffix()).starts_with("/uclibc")) 1293 Dirs.push_back("/../../../../sysroot/uclibc/usr/include"); 1294 else 1295 Dirs.push_back("/../../../../sysroot/usr/include"); 1296 return Dirs; 1297 }); 1298 } 1299 1300 // CodeScape IMG toolchain starting from v1.3. 1301 MultilibSet MtiMipsMultilibsV2; 1302 { 1303 auto BeHard = MultilibBuilder("/mips-r2-hard") 1304 .flag("-EB") 1305 .flag("-msoft-float", /*Disallow=*/true) 1306 .flag("-mnan=2008", /*Disallow=*/true) 1307 .flag("-muclibc", /*Disallow=*/true); 1308 auto BeSoft = MultilibBuilder("/mips-r2-soft") 1309 .flag("-EB") 1310 .flag("-msoft-float") 1311 .flag("-mnan=2008", /*Disallow=*/true); 1312 auto ElHard = MultilibBuilder("/mipsel-r2-hard") 1313 .flag("-EL") 1314 .flag("-msoft-float", /*Disallow=*/true) 1315 .flag("-mnan=2008", /*Disallow=*/true) 1316 .flag("-muclibc", /*Disallow=*/true); 1317 auto ElSoft = MultilibBuilder("/mipsel-r2-soft") 1318 .flag("-EL") 1319 .flag("-msoft-float") 1320 .flag("-mnan=2008", /*Disallow=*/true) 1321 .flag("-mmicromips", /*Disallow=*/true); 1322 auto BeHardNan = MultilibBuilder("/mips-r2-hard-nan2008") 1323 .flag("-EB") 1324 .flag("-msoft-float", /*Disallow=*/true) 1325 .flag("-mnan=2008") 1326 .flag("-muclibc", /*Disallow=*/true); 1327 auto ElHardNan = MultilibBuilder("/mipsel-r2-hard-nan2008") 1328 .flag("-EL") 1329 .flag("-msoft-float", /*Disallow=*/true) 1330 .flag("-mnan=2008") 1331 .flag("-muclibc", /*Disallow=*/true) 1332 .flag("-mmicromips", /*Disallow=*/true); 1333 auto BeHardNanUclibc = MultilibBuilder("/mips-r2-hard-nan2008-uclibc") 1334 .flag("-EB") 1335 .flag("-msoft-float", /*Disallow=*/true) 1336 .flag("-mnan=2008") 1337 .flag("-muclibc"); 1338 auto ElHardNanUclibc = MultilibBuilder("/mipsel-r2-hard-nan2008-uclibc") 1339 .flag("-EL") 1340 .flag("-msoft-float", /*Disallow=*/true) 1341 .flag("-mnan=2008") 1342 .flag("-muclibc"); 1343 auto BeHardUclibc = MultilibBuilder("/mips-r2-hard-uclibc") 1344 .flag("-EB") 1345 .flag("-msoft-float", /*Disallow=*/true) 1346 .flag("-mnan=2008", /*Disallow=*/true) 1347 .flag("-muclibc"); 1348 auto ElHardUclibc = MultilibBuilder("/mipsel-r2-hard-uclibc") 1349 .flag("-EL") 1350 .flag("-msoft-float", /*Disallow=*/true) 1351 .flag("-mnan=2008", /*Disallow=*/true) 1352 .flag("-muclibc"); 1353 auto ElMicroHardNan = MultilibBuilder("/micromipsel-r2-hard-nan2008") 1354 .flag("-EL") 1355 .flag("-msoft-float", /*Disallow=*/true) 1356 .flag("-mnan=2008") 1357 .flag("-mmicromips"); 1358 auto ElMicroSoft = MultilibBuilder("/micromipsel-r2-soft") 1359 .flag("-EL") 1360 .flag("-msoft-float") 1361 .flag("-mnan=2008", /*Disallow=*/true) 1362 .flag("-mmicromips"); 1363 1364 auto O32 = MultilibBuilder("/lib") 1365 .osSuffix("") 1366 .flag("-mabi=n32", /*Disallow=*/true) 1367 .flag("-mabi=n64", /*Disallow=*/true); 1368 auto N32 = MultilibBuilder("/lib32") 1369 .osSuffix("") 1370 .flag("-mabi=n32") 1371 .flag("-mabi=n64", /*Disallow=*/true); 1372 auto N64 = MultilibBuilder("/lib64") 1373 .osSuffix("") 1374 .flag("-mabi=n32", /*Disallow=*/true) 1375 .flag("-mabi=n64"); 1376 1377 MtiMipsMultilibsV2 = 1378 MultilibSetBuilder() 1379 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan, 1380 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc, 1381 ElHardUclibc, ElMicroHardNan, ElMicroSoft}) 1382 .Either(O32, N32, N64) 1383 .makeMultilibSet() 1384 .FilterOut(NonExistent) 1385 .setIncludeDirsCallback([](const Multilib &M) { 1386 return std::vector<std::string>({"/../../../../sysroot" + 1387 M.includeSuffix() + 1388 "/../usr/include"}); 1389 }) 1390 .setFilePathsCallback([](const Multilib &M) { 1391 return std::vector<std::string>( 1392 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()}); 1393 }); 1394 } 1395 for (auto *Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) { 1396 if (Candidate->select(Flags, Result.SelectedMultilibs)) { 1397 Result.Multilibs = *Candidate; 1398 return true; 1399 } 1400 } 1401 return false; 1402 } 1403 1404 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags, 1405 FilterNonExistent &NonExistent, 1406 DetectedMultilibs &Result) { 1407 // CodeScape IMG toolchain v1.2 and early. 1408 MultilibSet ImgMultilibsV1; 1409 { 1410 auto Mips64r6 = MultilibBuilder("/mips64r6") 1411 .flag("-m64") 1412 .flag("-m32", /*Disallow=*/true); 1413 1414 auto LittleEndian = 1415 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true); 1416 1417 auto MAbi64 = MultilibBuilder("/64") 1418 .flag("-mabi=n64") 1419 .flag("-mabi=n32", /*Disallow=*/true) 1420 .flag("-m32", /*Disallow=*/true); 1421 1422 ImgMultilibsV1 = 1423 MultilibSetBuilder() 1424 .Maybe(Mips64r6) 1425 .Maybe(MAbi64) 1426 .Maybe(LittleEndian) 1427 .makeMultilibSet() 1428 .FilterOut(NonExistent) 1429 .setIncludeDirsCallback([](const Multilib &M) { 1430 return std::vector<std::string>( 1431 {"/include", "/../../../../sysroot/usr/include"}); 1432 }); 1433 } 1434 1435 // CodeScape IMG toolchain starting from v1.3. 1436 MultilibSet ImgMultilibsV2; 1437 { 1438 auto BeHard = MultilibBuilder("/mips-r6-hard") 1439 .flag("-EB") 1440 .flag("-msoft-float", /*Disallow=*/true) 1441 .flag("-mmicromips", /*Disallow=*/true); 1442 auto BeSoft = MultilibBuilder("/mips-r6-soft") 1443 .flag("-EB") 1444 .flag("-msoft-float") 1445 .flag("-mmicromips", /*Disallow=*/true); 1446 auto ElHard = MultilibBuilder("/mipsel-r6-hard") 1447 .flag("-EL") 1448 .flag("-msoft-float", /*Disallow=*/true) 1449 .flag("-mmicromips", /*Disallow=*/true); 1450 auto ElSoft = MultilibBuilder("/mipsel-r6-soft") 1451 .flag("-EL") 1452 .flag("-msoft-float") 1453 .flag("-mmicromips", /*Disallow=*/true); 1454 auto BeMicroHard = MultilibBuilder("/micromips-r6-hard") 1455 .flag("-EB") 1456 .flag("-msoft-float", /*Disallow=*/true) 1457 .flag("-mmicromips"); 1458 auto BeMicroSoft = MultilibBuilder("/micromips-r6-soft") 1459 .flag("-EB") 1460 .flag("-msoft-float") 1461 .flag("-mmicromips"); 1462 auto ElMicroHard = MultilibBuilder("/micromipsel-r6-hard") 1463 .flag("-EL") 1464 .flag("-msoft-float", /*Disallow=*/true) 1465 .flag("-mmicromips"); 1466 auto ElMicroSoft = MultilibBuilder("/micromipsel-r6-soft") 1467 .flag("-EL") 1468 .flag("-msoft-float") 1469 .flag("-mmicromips"); 1470 1471 auto O32 = MultilibBuilder("/lib") 1472 .osSuffix("") 1473 .flag("-mabi=n32", /*Disallow=*/true) 1474 .flag("-mabi=n64", /*Disallow=*/true); 1475 auto N32 = MultilibBuilder("/lib32") 1476 .osSuffix("") 1477 .flag("-mabi=n32") 1478 .flag("-mabi=n64", /*Disallow=*/true); 1479 auto N64 = MultilibBuilder("/lib64") 1480 .osSuffix("") 1481 .flag("-mabi=n32", /*Disallow=*/true) 1482 .flag("-mabi=n64"); 1483 1484 ImgMultilibsV2 = 1485 MultilibSetBuilder() 1486 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft, 1487 ElMicroHard, ElMicroSoft}) 1488 .Either(O32, N32, N64) 1489 .makeMultilibSet() 1490 .FilterOut(NonExistent) 1491 .setIncludeDirsCallback([](const Multilib &M) { 1492 return std::vector<std::string>({"/../../../../sysroot" + 1493 M.includeSuffix() + 1494 "/../usr/include"}); 1495 }) 1496 .setFilePathsCallback([](const Multilib &M) { 1497 return std::vector<std::string>( 1498 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()}); 1499 }); 1500 } 1501 for (auto *Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) { 1502 if (Candidate->select(Flags, Result.SelectedMultilibs)) { 1503 Result.Multilibs = *Candidate; 1504 return true; 1505 } 1506 } 1507 return false; 1508 } 1509 1510 bool clang::driver::findMIPSMultilibs(const Driver &D, 1511 const llvm::Triple &TargetTriple, 1512 StringRef Path, const ArgList &Args, 1513 DetectedMultilibs &Result) { 1514 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1515 1516 StringRef CPUName; 1517 StringRef ABIName; 1518 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName); 1519 1520 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 1521 1522 Multilib::flags_list Flags; 1523 addMultilibFlag(TargetTriple.isMIPS32(), "-m32", Flags); 1524 addMultilibFlag(TargetTriple.isMIPS64(), "-m64", Flags); 1525 addMultilibFlag(isMips16(Args), "-mips16", Flags); 1526 addMultilibFlag(CPUName == "mips32", "-march=mips32", Flags); 1527 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" || 1528 CPUName == "mips32r5" || CPUName == "p5600", 1529 "-march=mips32r2", Flags); 1530 addMultilibFlag(CPUName == "mips32r6", "-march=mips32r6", Flags); 1531 addMultilibFlag(CPUName == "mips64", "-march=mips64", Flags); 1532 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" || 1533 CPUName == "mips64r5" || CPUName == "octeon" || 1534 CPUName == "octeon+", 1535 "-march=mips64r2", Flags); 1536 addMultilibFlag(CPUName == "mips64r6", "-march=mips64r6", Flags); 1537 addMultilibFlag(isMicroMips(Args), "-mmicromips", Flags); 1538 addMultilibFlag(tools::mips::isUCLibc(Args), "-muclibc", Flags); 1539 addMultilibFlag(tools::mips::isNaN2008(D, Args, TargetTriple), "-mnan=2008", 1540 Flags); 1541 addMultilibFlag(ABIName == "n32", "-mabi=n32", Flags); 1542 addMultilibFlag(ABIName == "n64", "-mabi=n64", Flags); 1543 addMultilibFlag(isSoftFloatABI(Args), "-msoft-float", Flags); 1544 addMultilibFlag(!isSoftFloatABI(Args), "-mhard-float", Flags); 1545 addMultilibFlag(isMipsEL(TargetArch), "-EL", Flags); 1546 addMultilibFlag(!isMipsEL(TargetArch), "-EB", Flags); 1547 1548 if (TargetTriple.isAndroid()) 1549 return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent, 1550 Result); 1551 1552 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1553 TargetTriple.getOS() == llvm::Triple::Linux && 1554 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment) 1555 return findMipsMuslMultilibs(Flags, NonExistent, Result); 1556 1557 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1558 TargetTriple.getOS() == llvm::Triple::Linux && 1559 TargetTriple.isGNUEnvironment()) 1560 return findMipsMtiMultilibs(Flags, NonExistent, Result); 1561 1562 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies && 1563 TargetTriple.getOS() == llvm::Triple::Linux && 1564 TargetTriple.isGNUEnvironment()) 1565 return findMipsImgMultilibs(Flags, NonExistent, Result); 1566 1567 if (findMipsCsMultilibs(Flags, NonExistent, Result)) 1568 return true; 1569 1570 // Fallback to the regular toolchain-tree structure. 1571 Multilib Default; 1572 Result.Multilibs.push_back(Default); 1573 Result.Multilibs.FilterOut(NonExistent); 1574 1575 if (Result.Multilibs.select(Flags, Result.SelectedMultilibs)) { 1576 Result.BiarchSibling = Multilib(); 1577 return true; 1578 } 1579 1580 return false; 1581 } 1582 1583 static void findAndroidArmMultilibs(const Driver &D, 1584 const llvm::Triple &TargetTriple, 1585 StringRef Path, const ArgList &Args, 1586 DetectedMultilibs &Result) { 1587 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb. 1588 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1589 MultilibBuilder ArmV7Multilib = MultilibBuilder("/armv7-a") 1590 .flag("-march=armv7-a") 1591 .flag("-mthumb", /*Disallow=*/true); 1592 MultilibBuilder ThumbMultilib = MultilibBuilder("/thumb") 1593 .flag("-march=armv7-a", /*Disallow=*/true) 1594 .flag("-mthumb"); 1595 MultilibBuilder ArmV7ThumbMultilib = 1596 MultilibBuilder("/armv7-a/thumb").flag("-march=armv7-a").flag("-mthumb"); 1597 MultilibBuilder DefaultMultilib = 1598 MultilibBuilder("") 1599 .flag("-march=armv7-a", /*Disallow=*/true) 1600 .flag("-mthumb", /*Disallow=*/true); 1601 MultilibSet AndroidArmMultilibs = 1602 MultilibSetBuilder() 1603 .Either(ThumbMultilib, ArmV7Multilib, ArmV7ThumbMultilib, 1604 DefaultMultilib) 1605 .makeMultilibSet() 1606 .FilterOut(NonExistent); 1607 1608 Multilib::flags_list Flags; 1609 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ); 1610 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm; 1611 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb; 1612 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7; 1613 bool IsThumbMode = IsThumbArch || 1614 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) || 1615 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB); 1616 bool IsArmV7Mode = (IsArmArch || IsThumbArch) && 1617 (llvm::ARM::parseArchVersion(Arch) == 7 || 1618 (IsArmArch && Arch == "" && IsV7SubArch)); 1619 addMultilibFlag(IsArmV7Mode, "-march=armv7-a", Flags); 1620 addMultilibFlag(IsThumbMode, "-mthumb", Flags); 1621 1622 if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilibs)) 1623 Result.Multilibs = AndroidArmMultilibs; 1624 } 1625 1626 static bool findMSP430Multilibs(const Driver &D, 1627 const llvm::Triple &TargetTriple, 1628 StringRef Path, const ArgList &Args, 1629 DetectedMultilibs &Result) { 1630 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1631 MultilibBuilder WithoutExceptions = 1632 MultilibBuilder("/430").flag("-exceptions", /*Disallow=*/true); 1633 MultilibBuilder WithExceptions = 1634 MultilibBuilder("/430/exceptions").flag("-exceptions"); 1635 1636 // FIXME: when clang starts to support msp430x ISA additional logic 1637 // to select between multilib must be implemented 1638 // MultilibBuilder MSP430xMultilib = MultilibBuilder("/large"); 1639 1640 Result.Multilibs.push_back(WithoutExceptions.makeMultilib()); 1641 Result.Multilibs.push_back(WithExceptions.makeMultilib()); 1642 Result.Multilibs.FilterOut(NonExistent); 1643 1644 Multilib::flags_list Flags; 1645 addMultilibFlag(Args.hasFlag(options::OPT_fexceptions, 1646 options::OPT_fno_exceptions, false), 1647 "-exceptions", Flags); 1648 if (Result.Multilibs.select(Flags, Result.SelectedMultilibs)) 1649 return true; 1650 1651 return false; 1652 } 1653 1654 static void findCSKYMultilibs(const Driver &D, const llvm::Triple &TargetTriple, 1655 StringRef Path, const ArgList &Args, 1656 DetectedMultilibs &Result) { 1657 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1658 1659 tools::csky::FloatABI TheFloatABI = tools::csky::getCSKYFloatABI(D, Args); 1660 std::optional<llvm::StringRef> Res = 1661 tools::csky::getCSKYArchName(D, Args, TargetTriple); 1662 1663 if (!Res) 1664 return; 1665 auto ARCHName = *Res; 1666 1667 Multilib::flags_list Flags; 1668 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Hard, "-hard-fp", 1669 Flags); 1670 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::SoftFP, "-soft-fp", 1671 Flags); 1672 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Soft, "-soft", Flags); 1673 addMultilibFlag(ARCHName == "ck801", "-march=ck801", Flags); 1674 addMultilibFlag(ARCHName == "ck802", "-march=ck802", Flags); 1675 addMultilibFlag(ARCHName == "ck803", "-march=ck803", Flags); 1676 addMultilibFlag(ARCHName == "ck804", "-march=ck804", Flags); 1677 addMultilibFlag(ARCHName == "ck805", "-march=ck805", Flags); 1678 addMultilibFlag(ARCHName == "ck807", "-march=ck807", Flags); 1679 addMultilibFlag(ARCHName == "ck810", "-march=ck810", Flags); 1680 addMultilibFlag(ARCHName == "ck810v", "-march=ck810v", Flags); 1681 addMultilibFlag(ARCHName == "ck860", "-march=ck860", Flags); 1682 addMultilibFlag(ARCHName == "ck860v", "-march=ck860v", Flags); 1683 1684 bool isBigEndian = false; 1685 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian, 1686 options::OPT_mbig_endian)) 1687 isBigEndian = !A->getOption().matches(options::OPT_mlittle_endian); 1688 addMultilibFlag(isBigEndian, "-EB", Flags); 1689 1690 auto HardFloat = MultilibBuilder("/hard-fp").flag("-hard-fp"); 1691 auto SoftFpFloat = MultilibBuilder("/soft-fp").flag("-soft-fp"); 1692 auto SoftFloat = MultilibBuilder("").flag("-soft"); 1693 auto Arch801 = MultilibBuilder("/ck801").flag("-march=ck801"); 1694 auto Arch802 = MultilibBuilder("/ck802").flag("-march=ck802"); 1695 auto Arch803 = MultilibBuilder("/ck803").flag("-march=ck803"); 1696 // CK804 use the same library as CK803 1697 auto Arch804 = MultilibBuilder("/ck803").flag("-march=ck804"); 1698 auto Arch805 = MultilibBuilder("/ck805").flag("-march=ck805"); 1699 auto Arch807 = MultilibBuilder("/ck807").flag("-march=ck807"); 1700 auto Arch810 = MultilibBuilder("").flag("-march=ck810"); 1701 auto Arch810v = MultilibBuilder("/ck810v").flag("-march=ck810v"); 1702 auto Arch860 = MultilibBuilder("/ck860").flag("-march=ck860"); 1703 auto Arch860v = MultilibBuilder("/ck860v").flag("-march=ck860v"); 1704 auto BigEndian = MultilibBuilder("/big").flag("-EB"); 1705 1706 MultilibSet CSKYMultilibs = 1707 MultilibSetBuilder() 1708 .Maybe(BigEndian) 1709 .Either({Arch801, Arch802, Arch803, Arch804, Arch805, Arch807, 1710 Arch810, Arch810v, Arch860, Arch860v}) 1711 .Either(HardFloat, SoftFpFloat, SoftFloat) 1712 .makeMultilibSet() 1713 .FilterOut(NonExistent); 1714 1715 if (CSKYMultilibs.select(Flags, Result.SelectedMultilibs)) 1716 Result.Multilibs = CSKYMultilibs; 1717 } 1718 1719 /// Extend the multi-lib re-use selection mechanism for RISC-V. 1720 /// This function will try to re-use multi-lib if they are compatible. 1721 /// Definition of compatible: 1722 /// - ABI must be the same. 1723 /// - multi-lib is a subset of current arch, e.g. multi-lib=march=rv32im 1724 /// is a subset of march=rv32imc. 1725 /// - march that contains atomic extension can't reuse multi-lib that 1726 /// doesn't have atomic, vice versa. e.g. multi-lib=march=rv32im and 1727 /// march=rv32ima are not compatible, because software and hardware 1728 /// atomic operation can't work together correctly. 1729 static bool 1730 selectRISCVMultilib(const MultilibSet &RISCVMultilibSet, StringRef Arch, 1731 const Multilib::flags_list &Flags, 1732 llvm::SmallVectorImpl<Multilib> &SelectedMultilibs) { 1733 // Try to find the perfect matching multi-lib first. 1734 if (RISCVMultilibSet.select(Flags, SelectedMultilibs)) 1735 return true; 1736 1737 Multilib::flags_list NewFlags; 1738 std::vector<MultilibBuilder> NewMultilibs; 1739 1740 llvm::Expected<std::unique_ptr<llvm::RISCVISAInfo>> ParseResult = 1741 llvm::RISCVISAInfo::parseArchString( 1742 Arch, /*EnableExperimentalExtension=*/true, 1743 /*ExperimentalExtensionVersionCheck=*/false); 1744 // Ignore any error here, we assume it will be handled in another place. 1745 if (llvm::errorToBool(ParseResult.takeError())) 1746 return false; 1747 1748 auto &ISAInfo = *ParseResult; 1749 1750 addMultilibFlag(ISAInfo->getXLen() == 32, "-m32", NewFlags); 1751 addMultilibFlag(ISAInfo->getXLen() == 64, "-m64", NewFlags); 1752 1753 // Collect all flags except march=* 1754 for (StringRef Flag : Flags) { 1755 if (Flag.starts_with("!march=") || Flag.starts_with("-march=")) 1756 continue; 1757 1758 NewFlags.push_back(Flag.str()); 1759 } 1760 1761 llvm::StringSet<> AllArchExts; 1762 // Reconstruct multi-lib list, and break march option into separated 1763 // extension. e.g. march=rv32im -> +i +m 1764 for (const auto &M : RISCVMultilibSet) { 1765 bool Skip = false; 1766 1767 MultilibBuilder NewMultilib = 1768 MultilibBuilder(M.gccSuffix(), M.osSuffix(), M.includeSuffix()); 1769 for (StringRef Flag : M.flags()) { 1770 // Add back all flags except -march. 1771 if (!Flag.consume_front("-march=")) { 1772 NewMultilib.flag(Flag); 1773 continue; 1774 } 1775 1776 // Break down -march into individual extension. 1777 llvm::Expected<std::unique_ptr<llvm::RISCVISAInfo>> MLConfigParseResult = 1778 llvm::RISCVISAInfo::parseArchString( 1779 Flag, /*EnableExperimentalExtension=*/true, 1780 /*ExperimentalExtensionVersionCheck=*/false); 1781 // Ignore any error here, we assume it will handled in another place. 1782 if (llvm::errorToBool(MLConfigParseResult.takeError())) { 1783 // We might get a parsing error if rv32e in the list, we could just skip 1784 // that and process the rest of multi-lib configs. 1785 Skip = true; 1786 continue; 1787 } 1788 auto &MLConfigISAInfo = *MLConfigParseResult; 1789 1790 const llvm::RISCVISAInfo::OrderedExtensionMap &MLConfigArchExts = 1791 MLConfigISAInfo->getExtensions(); 1792 for (auto MLConfigArchExt : MLConfigArchExts) { 1793 auto ExtName = MLConfigArchExt.first; 1794 NewMultilib.flag(Twine("-", ExtName).str()); 1795 1796 if (AllArchExts.insert(ExtName).second) { 1797 addMultilibFlag(ISAInfo->hasExtension(ExtName), 1798 Twine("-", ExtName).str(), NewFlags); 1799 } 1800 } 1801 1802 // Check the XLEN explicitly. 1803 if (MLConfigISAInfo->getXLen() == 32) { 1804 NewMultilib.flag("-m32"); 1805 NewMultilib.flag("-m64", /*Disallow*/ true); 1806 } else { 1807 NewMultilib.flag("-m32", /*Disallow*/ true); 1808 NewMultilib.flag("-m64"); 1809 } 1810 1811 // Atomic extension must be explicitly checked, soft and hard atomic 1812 // operation never co-work correctly. 1813 if (!MLConfigISAInfo->hasExtension("a")) 1814 NewMultilib.flag("-a", /*Disallow*/ true); 1815 } 1816 1817 if (Skip) 1818 continue; 1819 1820 NewMultilibs.emplace_back(NewMultilib); 1821 } 1822 1823 // Build an internal used only multi-lib list, used for checking any 1824 // compatible multi-lib. 1825 MultilibSet NewRISCVMultilibs = 1826 MultilibSetBuilder().Either(NewMultilibs).makeMultilibSet(); 1827 1828 if (NewRISCVMultilibs.select(NewFlags, SelectedMultilibs)) 1829 for (const Multilib &NewSelectedM : SelectedMultilibs) 1830 for (const auto &M : RISCVMultilibSet) 1831 // Look up the corresponding multi-lib entry in original multi-lib set. 1832 if (M.gccSuffix() == NewSelectedM.gccSuffix()) 1833 return true; 1834 1835 return false; 1836 } 1837 1838 static void findRISCVBareMetalMultilibs(const Driver &D, 1839 const llvm::Triple &TargetTriple, 1840 StringRef Path, const ArgList &Args, 1841 DetectedMultilibs &Result) { 1842 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1843 struct RiscvMultilib { 1844 StringRef march; 1845 StringRef mabi; 1846 }; 1847 // currently only support the set of multilibs like riscv-gnu-toolchain does. 1848 // TODO: support MULTILIB_REUSE 1849 constexpr RiscvMultilib RISCVMultilibSet[] = { 1850 {"rv32i", "ilp32"}, {"rv32im", "ilp32"}, {"rv32iac", "ilp32"}, 1851 {"rv32imac", "ilp32"}, {"rv32imafc", "ilp32f"}, {"rv64imac", "lp64"}, 1852 {"rv64imafdc", "lp64d"}}; 1853 1854 std::vector<MultilibBuilder> Ms; 1855 for (auto Element : RISCVMultilibSet) { 1856 // multilib path rule is ${march}/${mabi} 1857 Ms.emplace_back( 1858 MultilibBuilder( 1859 (Twine(Element.march) + "/" + Twine(Element.mabi)).str()) 1860 .flag(Twine("-march=", Element.march).str()) 1861 .flag(Twine("-mabi=", Element.mabi).str())); 1862 } 1863 MultilibSet RISCVMultilibs = 1864 MultilibSetBuilder() 1865 .Either(Ms) 1866 .makeMultilibSet() 1867 .FilterOut(NonExistent) 1868 .setFilePathsCallback([](const Multilib &M) { 1869 return std::vector<std::string>( 1870 {M.gccSuffix(), 1871 "/../../../../riscv64-unknown-elf/lib" + M.gccSuffix(), 1872 "/../../../../riscv32-unknown-elf/lib" + M.gccSuffix()}); 1873 }); 1874 1875 Multilib::flags_list Flags; 1876 llvm::StringSet<> Added_ABIs; 1877 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple); 1878 StringRef MArch = tools::riscv::getRISCVArch(Args, TargetTriple); 1879 for (auto Element : RISCVMultilibSet) { 1880 addMultilibFlag(MArch == Element.march, 1881 Twine("-march=", Element.march).str().c_str(), Flags); 1882 if (!Added_ABIs.count(Element.mabi)) { 1883 Added_ABIs.insert(Element.mabi); 1884 addMultilibFlag(ABIName == Element.mabi, 1885 Twine("-mabi=", Element.mabi).str().c_str(), Flags); 1886 } 1887 } 1888 1889 if (selectRISCVMultilib(RISCVMultilibs, MArch, Flags, 1890 Result.SelectedMultilibs)) 1891 Result.Multilibs = RISCVMultilibs; 1892 } 1893 1894 static void findRISCVMultilibs(const Driver &D, 1895 const llvm::Triple &TargetTriple, StringRef Path, 1896 const ArgList &Args, DetectedMultilibs &Result) { 1897 if (TargetTriple.getOS() == llvm::Triple::UnknownOS) 1898 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result); 1899 1900 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1901 MultilibBuilder Ilp32 = 1902 MultilibBuilder("lib32/ilp32").flag("-m32").flag("-mabi=ilp32"); 1903 MultilibBuilder Ilp32f = 1904 MultilibBuilder("lib32/ilp32f").flag("-m32").flag("-mabi=ilp32f"); 1905 MultilibBuilder Ilp32d = 1906 MultilibBuilder("lib32/ilp32d").flag("-m32").flag("-mabi=ilp32d"); 1907 MultilibBuilder Lp64 = 1908 MultilibBuilder("lib64/lp64").flag("-m64").flag("-mabi=lp64"); 1909 MultilibBuilder Lp64f = 1910 MultilibBuilder("lib64/lp64f").flag("-m64").flag("-mabi=lp64f"); 1911 MultilibBuilder Lp64d = 1912 MultilibBuilder("lib64/lp64d").flag("-m64").flag("-mabi=lp64d"); 1913 MultilibSet RISCVMultilibs = 1914 MultilibSetBuilder() 1915 .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d}) 1916 .makeMultilibSet() 1917 .FilterOut(NonExistent); 1918 1919 Multilib::flags_list Flags; 1920 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64; 1921 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple); 1922 1923 addMultilibFlag(!IsRV64, "-m32", Flags); 1924 addMultilibFlag(IsRV64, "-m64", Flags); 1925 addMultilibFlag(ABIName == "ilp32", "-mabi=ilp32", Flags); 1926 addMultilibFlag(ABIName == "ilp32f", "-mabi=ilp32f", Flags); 1927 addMultilibFlag(ABIName == "ilp32d", "-mabi=ilp32d", Flags); 1928 addMultilibFlag(ABIName == "lp64", "-mabi=lp64", Flags); 1929 addMultilibFlag(ABIName == "lp64f", "-mabi=lp64f", Flags); 1930 addMultilibFlag(ABIName == "lp64d", "-mabi=lp64d", Flags); 1931 1932 if (RISCVMultilibs.select(Flags, Result.SelectedMultilibs)) 1933 Result.Multilibs = RISCVMultilibs; 1934 } 1935 1936 static bool findBiarchMultilibs(const Driver &D, 1937 const llvm::Triple &TargetTriple, 1938 StringRef Path, const ArgList &Args, 1939 bool NeedsBiarchSuffix, 1940 DetectedMultilibs &Result) { 1941 MultilibBuilder DefaultBuilder; 1942 1943 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs 1944 // in what would normally be GCCInstallPath and put the 64-bit 1945 // libs in a subdirectory named 64. The simple logic we follow is that 1946 // *if* there is a subdirectory of the right name with crtbegin.o in it, 1947 // we use that. If not, and if not a biarch triple alias, we look for 1948 // crtbegin.o without the subdirectory. 1949 1950 StringRef Suff64 = "/64"; 1951 // Solaris uses platform-specific suffixes instead of /64. 1952 if (TargetTriple.isOSSolaris()) { 1953 switch (TargetTriple.getArch()) { 1954 case llvm::Triple::x86: 1955 case llvm::Triple::x86_64: 1956 Suff64 = "/amd64"; 1957 break; 1958 case llvm::Triple::sparc: 1959 case llvm::Triple::sparcv9: 1960 Suff64 = "/sparcv9"; 1961 break; 1962 default: 1963 break; 1964 } 1965 } 1966 1967 Multilib Alt64 = MultilibBuilder() 1968 .gccSuffix(Suff64) 1969 .includeSuffix(Suff64) 1970 .flag("-m32", /*Disallow=*/true) 1971 .flag("-m64") 1972 .flag("-mx32", /*Disallow=*/true) 1973 .makeMultilib(); 1974 Multilib Alt32 = MultilibBuilder() 1975 .gccSuffix("/32") 1976 .includeSuffix("/32") 1977 .flag("-m32") 1978 .flag("-m64", /*Disallow=*/true) 1979 .flag("-mx32", /*Disallow=*/true) 1980 .makeMultilib(); 1981 Multilib Altx32 = MultilibBuilder() 1982 .gccSuffix("/x32") 1983 .includeSuffix("/x32") 1984 .flag("-m32", /*Disallow=*/true) 1985 .flag("-m64", /*Disallow=*/true) 1986 .flag("-mx32") 1987 .makeMultilib(); 1988 Multilib Alt32sparc = MultilibBuilder() 1989 .gccSuffix("/sparcv8plus") 1990 .includeSuffix("/sparcv8plus") 1991 .flag("-m32") 1992 .flag("-m64", /*Disallow=*/true) 1993 .makeMultilib(); 1994 1995 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a. 1996 FilterNonExistent NonExistent( 1997 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS()); 1998 1999 // Determine default multilib from: 32, 64, x32 2000 // Also handle cases such as 64 on 32, 32 on 64, etc. 2001 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN; 2002 const bool IsX32 = TargetTriple.isX32(); 2003 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32)) 2004 Want = WANT64; 2005 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32sparc)) 2006 Want = WANT64; 2007 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32)) 2008 Want = WANT64; 2009 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64)) 2010 Want = WANT32; 2011 else if (TargetTriple.isArch64Bit() && !NonExistent(Alt32sparc)) 2012 Want = WANT64; 2013 else { 2014 if (TargetTriple.isArch32Bit()) 2015 Want = NeedsBiarchSuffix ? WANT64 : WANT32; 2016 else if (IsX32) 2017 Want = NeedsBiarchSuffix ? WANT64 : WANTX32; 2018 else 2019 Want = NeedsBiarchSuffix ? WANT32 : WANT64; 2020 } 2021 2022 if (Want == WANT32) 2023 DefaultBuilder.flag("-m32") 2024 .flag("-m64", /*Disallow=*/true) 2025 .flag("-mx32", /*Disallow=*/true); 2026 else if (Want == WANT64) 2027 DefaultBuilder.flag("-m32", /*Disallow=*/true) 2028 .flag("-m64") 2029 .flag("-mx32", /*Disallow=*/true); 2030 else if (Want == WANTX32) 2031 DefaultBuilder.flag("-m32", /*Disallow=*/true) 2032 .flag("-m64", /*Disallow=*/true) 2033 .flag("-mx32"); 2034 else 2035 return false; 2036 2037 Multilib Default = DefaultBuilder.makeMultilib(); 2038 2039 Result.Multilibs.push_back(Default); 2040 Result.Multilibs.push_back(Alt64); 2041 Result.Multilibs.push_back(Alt32); 2042 Result.Multilibs.push_back(Altx32); 2043 Result.Multilibs.push_back(Alt32sparc); 2044 2045 Result.Multilibs.FilterOut(NonExistent); 2046 2047 Multilib::flags_list Flags; 2048 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "-m64", Flags); 2049 addMultilibFlag(TargetTriple.isArch32Bit(), "-m32", Flags); 2050 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "-mx32", Flags); 2051 2052 if (!Result.Multilibs.select(Flags, Result.SelectedMultilibs)) 2053 return false; 2054 2055 if (Result.SelectedMultilibs.back() == Alt64 || 2056 Result.SelectedMultilibs.back() == Alt32 || 2057 Result.SelectedMultilibs.back() == Altx32 || 2058 Result.SelectedMultilibs.back() == Alt32sparc) 2059 Result.BiarchSibling = Default; 2060 2061 return true; 2062 } 2063 2064 /// Generic_GCC - A tool chain using the 'gcc' command to perform 2065 /// all subcommands; this relies on gcc translating the majority of 2066 /// command line options. 2067 2068 /// Less-than for GCCVersion, implementing a Strict Weak Ordering. 2069 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor, 2070 int RHSPatch, 2071 StringRef RHSPatchSuffix) const { 2072 if (Major != RHSMajor) 2073 return Major < RHSMajor; 2074 if (Minor != RHSMinor) { 2075 // Note that versions without a specified minor sort higher than those with 2076 // a minor. 2077 if (RHSMinor == -1) 2078 return true; 2079 if (Minor == -1) 2080 return false; 2081 return Minor < RHSMinor; 2082 } 2083 if (Patch != RHSPatch) { 2084 // Note that versions without a specified patch sort higher than those with 2085 // a patch. 2086 if (RHSPatch == -1) 2087 return true; 2088 if (Patch == -1) 2089 return false; 2090 2091 // Otherwise just sort on the patch itself. 2092 return Patch < RHSPatch; 2093 } 2094 if (PatchSuffix != RHSPatchSuffix) { 2095 // Sort empty suffixes higher. 2096 if (RHSPatchSuffix.empty()) 2097 return true; 2098 if (PatchSuffix.empty()) 2099 return false; 2100 2101 // Provide a lexicographic sort to make this a total ordering. 2102 return PatchSuffix < RHSPatchSuffix; 2103 } 2104 2105 // The versions are equal. 2106 return false; 2107 } 2108 2109 /// Parse a GCCVersion object out of a string of text. 2110 /// 2111 /// This is the primary means of forming GCCVersion objects. 2112 /*static*/ 2113 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) { 2114 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 2115 std::pair<StringRef, StringRef> First = VersionText.split('.'); 2116 std::pair<StringRef, StringRef> Second = First.second.split('.'); 2117 2118 StringRef MajorStr = First.first; 2119 StringRef MinorStr = Second.first; 2120 StringRef PatchStr = Second.second; 2121 2122 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 2123 2124 // Parse version number strings such as: 2125 // 5 2126 // 4.4 2127 // 4.4-patched 2128 // 4.4.0 2129 // 4.4.x 2130 // 4.4.2-rc4 2131 // 4.4.x-patched 2132 // 10-win32 2133 // Split on '.', handle 1, 2 or 3 such segments. Each segment must contain 2134 // purely a number, except for the last one, where a non-number suffix 2135 // is stored in PatchSuffix. The third segment is allowed to not contain 2136 // a number at all. 2137 2138 auto TryParseLastNumber = [&](StringRef Segment, int &Number, 2139 std::string &OutStr) -> bool { 2140 // Look for a number prefix and parse that, and split out any trailing 2141 // string into GoodVersion.PatchSuffix. 2142 2143 if (size_t EndNumber = Segment.find_first_not_of("0123456789")) { 2144 StringRef NumberStr = Segment.slice(0, EndNumber); 2145 if (NumberStr.getAsInteger(10, Number) || Number < 0) 2146 return false; 2147 OutStr = NumberStr; 2148 GoodVersion.PatchSuffix = Segment.substr(EndNumber); 2149 return true; 2150 } 2151 return false; 2152 }; 2153 auto TryParseNumber = [](StringRef Segment, int &Number) -> bool { 2154 if (Segment.getAsInteger(10, Number) || Number < 0) 2155 return false; 2156 return true; 2157 }; 2158 2159 if (MinorStr.empty()) { 2160 // If no minor string, major is the last segment 2161 if (!TryParseLastNumber(MajorStr, GoodVersion.Major, GoodVersion.MajorStr)) 2162 return BadVersion; 2163 return GoodVersion; 2164 } 2165 2166 if (!TryParseNumber(MajorStr, GoodVersion.Major)) 2167 return BadVersion; 2168 GoodVersion.MajorStr = MajorStr; 2169 2170 if (PatchStr.empty()) { 2171 // If no patch string, minor is the last segment 2172 if (!TryParseLastNumber(MinorStr, GoodVersion.Minor, GoodVersion.MinorStr)) 2173 return BadVersion; 2174 return GoodVersion; 2175 } 2176 2177 if (!TryParseNumber(MinorStr, GoodVersion.Minor)) 2178 return BadVersion; 2179 GoodVersion.MinorStr = MinorStr; 2180 2181 // For the last segment, tolerate a missing number. 2182 std::string DummyStr; 2183 TryParseLastNumber(PatchStr, GoodVersion.Patch, DummyStr); 2184 return GoodVersion; 2185 } 2186 2187 static llvm::StringRef getGCCToolchainDir(const ArgList &Args, 2188 llvm::StringRef SysRoot) { 2189 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain); 2190 if (A) 2191 return A->getValue(); 2192 2193 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX. 2194 // GCC_INSTALL_PREFIX specifies the gcc installation for the default 2195 // sysroot and is likely not valid with a different sysroot. 2196 if (!SysRoot.empty()) 2197 return ""; 2198 2199 return GCC_INSTALL_PREFIX; 2200 } 2201 2202 /// Initialize a GCCInstallationDetector from the driver. 2203 /// 2204 /// This performs all of the autodetection and sets up the various paths. 2205 /// Once constructed, a GCCInstallationDetector is essentially immutable. 2206 /// 2207 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and 2208 /// should instead pull the target out of the driver. This is currently 2209 /// necessary because the driver doesn't store the final version of the target 2210 /// triple. 2211 void Generic_GCC::GCCInstallationDetector::init( 2212 const llvm::Triple &TargetTriple, const ArgList &Args) { 2213 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit() 2214 ? TargetTriple.get64BitArchVariant() 2215 : TargetTriple.get32BitArchVariant(); 2216 // The library directories which may contain GCC installations. 2217 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs; 2218 // The compatible GCC triples for this particular architecture. 2219 SmallVector<StringRef, 16> CandidateTripleAliases; 2220 SmallVector<StringRef, 16> CandidateBiarchTripleAliases; 2221 // Add some triples that we want to check first. 2222 CandidateTripleAliases.push_back(TargetTriple.str()); 2223 std::string TripleNoVendor = TargetTriple.getArchName().str() + "-" + 2224 TargetTriple.getOSAndEnvironmentName().str(); 2225 if (TargetTriple.getVendor() == llvm::Triple::UnknownVendor) 2226 CandidateTripleAliases.push_back(TripleNoVendor); 2227 2228 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs, 2229 CandidateTripleAliases, CandidateBiarchLibDirs, 2230 CandidateBiarchTripleAliases); 2231 2232 // If --gcc-install-dir= is specified, skip filesystem detection. 2233 if (const Arg *A = 2234 Args.getLastArg(clang::driver::options::OPT_gcc_install_dir_EQ); 2235 A && A->getValue()[0]) { 2236 StringRef InstallDir = A->getValue(); 2237 if (!ScanGCCForMultilibs(TargetTriple, Args, InstallDir, false)) { 2238 D.Diag(diag::err_drv_invalid_gcc_install_dir) << InstallDir; 2239 } else { 2240 (void)InstallDir.consume_back("/"); 2241 StringRef VersionText = llvm::sys::path::filename(InstallDir); 2242 StringRef TripleText = 2243 llvm::sys::path::filename(llvm::sys::path::parent_path(InstallDir)); 2244 2245 Version = GCCVersion::Parse(VersionText); 2246 GCCTriple.setTriple(TripleText); 2247 GCCInstallPath = std::string(InstallDir); 2248 GCCParentLibPath = GCCInstallPath + "/../../.."; 2249 IsValid = true; 2250 } 2251 return; 2252 } 2253 2254 // If --gcc-triple is specified use this instead of trying to 2255 // auto-detect a triple. 2256 if (const Arg *A = 2257 Args.getLastArg(clang::driver::options::OPT_gcc_triple_EQ)) { 2258 StringRef GCCTriple = A->getValue(); 2259 CandidateTripleAliases.clear(); 2260 CandidateTripleAliases.push_back(GCCTriple); 2261 } 2262 2263 // Compute the set of prefixes for our search. 2264 SmallVector<std::string, 8> Prefixes; 2265 StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot); 2266 if (GCCToolchainDir != "") { 2267 if (GCCToolchainDir.back() == '/') 2268 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the / 2269 2270 Prefixes.push_back(std::string(GCCToolchainDir)); 2271 } else { 2272 // If we have a SysRoot, try that first. 2273 if (!D.SysRoot.empty()) { 2274 Prefixes.push_back(D.SysRoot); 2275 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 2276 } 2277 2278 // Then look for gcc installed alongside clang. 2279 Prefixes.push_back(D.InstalledDir + "/.."); 2280 2281 // Next, look for prefix(es) that correspond to distribution-supplied gcc 2282 // installations. 2283 if (D.SysRoot.empty()) { 2284 // Typically /usr. 2285 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 2286 } 2287 2288 // Try to respect gcc-config on Gentoo if --gcc-toolchain is not provided. 2289 // This avoids accidentally enforcing the system GCC version when using a 2290 // custom toolchain. 2291 SmallVector<StringRef, 16> GentooTestTriples; 2292 // Try to match an exact triple as target triple first. 2293 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for 2294 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu" 2295 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching 2296 // triple x86_64-gentoo-linux-gnu is present. 2297 GentooTestTriples.push_back(TargetTriple.str()); 2298 GentooTestTriples.append(CandidateTripleAliases.begin(), 2299 CandidateTripleAliases.end()); 2300 if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples, 2301 CandidateBiarchTripleAliases)) 2302 return; 2303 } 2304 2305 // Loop over the various components which exist and select the best GCC 2306 // installation available. GCC installs are ranked by version number. 2307 const GCCVersion VersionZero = GCCVersion::Parse("0.0.0"); 2308 Version = VersionZero; 2309 for (const std::string &Prefix : Prefixes) { 2310 auto &VFS = D.getVFS(); 2311 if (!VFS.exists(Prefix)) 2312 continue; 2313 for (StringRef Suffix : CandidateLibDirs) { 2314 const std::string LibDir = concat(Prefix, Suffix); 2315 if (!VFS.exists(LibDir)) 2316 continue; 2317 // Maybe filter out <libdir>/gcc and <libdir>/gcc-cross. 2318 bool GCCDirExists = VFS.exists(LibDir + "/gcc"); 2319 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross"); 2320 for (StringRef Candidate : CandidateTripleAliases) 2321 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, false, 2322 GCCDirExists, GCCCrossDirExists); 2323 } 2324 for (StringRef Suffix : CandidateBiarchLibDirs) { 2325 const std::string LibDir = Prefix + Suffix.str(); 2326 if (!VFS.exists(LibDir)) 2327 continue; 2328 bool GCCDirExists = VFS.exists(LibDir + "/gcc"); 2329 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross"); 2330 for (StringRef Candidate : CandidateBiarchTripleAliases) 2331 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, true, 2332 GCCDirExists, GCCCrossDirExists); 2333 } 2334 2335 // Skip other prefixes once a GCC installation is found. 2336 if (Version > VersionZero) 2337 break; 2338 } 2339 } 2340 2341 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const { 2342 for (const auto &InstallPath : CandidateGCCInstallPaths) 2343 OS << "Found candidate GCC installation: " << InstallPath << "\n"; 2344 2345 if (!GCCInstallPath.empty()) 2346 OS << "Selected GCC installation: " << GCCInstallPath << "\n"; 2347 2348 for (const auto &Multilib : Multilibs) 2349 OS << "Candidate multilib: " << Multilib << "\n"; 2350 2351 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault()) 2352 OS << "Selected multilib: " << SelectedMultilib << "\n"; 2353 } 2354 2355 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const { 2356 if (BiarchSibling) { 2357 M = *BiarchSibling; 2358 return true; 2359 } 2360 return false; 2361 } 2362 2363 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes( 2364 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes, 2365 StringRef SysRoot) { 2366 2367 if (TargetTriple.isOSHaiku()) { 2368 Prefixes.push_back(concat(SysRoot, "/boot/system/develop/tools")); 2369 return; 2370 } 2371 2372 if (TargetTriple.isOSSolaris()) { 2373 // Solaris is a special case. 2374 // The GCC installation is under 2375 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/ 2376 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with 2377 // /usr/gcc/<version> as a prefix. 2378 2379 SmallVector<std::pair<GCCVersion, std::string>, 8> SolarisPrefixes; 2380 std::string PrefixDir = concat(SysRoot, "/usr/gcc"); 2381 std::error_code EC; 2382 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC), 2383 LE; 2384 !EC && LI != LE; LI = LI.increment(EC)) { 2385 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2386 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 2387 2388 // Filter out obviously bad entries. 2389 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1)) 2390 continue; 2391 2392 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str(); 2393 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc"; 2394 if (!D.getVFS().exists(CandidateLibPath)) 2395 continue; 2396 2397 SolarisPrefixes.emplace_back( 2398 std::make_pair(CandidateVersion, CandidatePrefix)); 2399 } 2400 // Sort in reverse order so GCCInstallationDetector::init picks the latest. 2401 std::sort(SolarisPrefixes.rbegin(), SolarisPrefixes.rend()); 2402 for (auto p : SolarisPrefixes) 2403 Prefixes.emplace_back(p.second); 2404 return; 2405 } 2406 2407 // For Linux, if --sysroot is not specified, look for RHEL/CentOS devtoolsets 2408 // and gcc-toolsets. 2409 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux && 2410 D.getVFS().exists("/opt/rh")) { 2411 // TODO: We may want to remove this, since the functionality 2412 // can be achieved using config files. 2413 Prefixes.push_back("/opt/rh/gcc-toolset-12/root/usr"); 2414 Prefixes.push_back("/opt/rh/gcc-toolset-11/root/usr"); 2415 Prefixes.push_back("/opt/rh/gcc-toolset-10/root/usr"); 2416 Prefixes.push_back("/opt/rh/devtoolset-12/root/usr"); 2417 Prefixes.push_back("/opt/rh/devtoolset-11/root/usr"); 2418 Prefixes.push_back("/opt/rh/devtoolset-10/root/usr"); 2419 Prefixes.push_back("/opt/rh/devtoolset-9/root/usr"); 2420 Prefixes.push_back("/opt/rh/devtoolset-8/root/usr"); 2421 Prefixes.push_back("/opt/rh/devtoolset-7/root/usr"); 2422 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr"); 2423 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr"); 2424 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr"); 2425 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr"); 2426 } 2427 2428 // Fall back to /usr which is used by most non-Solaris systems. 2429 Prefixes.push_back(concat(SysRoot, "/usr")); 2430 } 2431 2432 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples( 2433 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple, 2434 SmallVectorImpl<StringRef> &LibDirs, 2435 SmallVectorImpl<StringRef> &TripleAliases, 2436 SmallVectorImpl<StringRef> &BiarchLibDirs, 2437 SmallVectorImpl<StringRef> &BiarchTripleAliases) { 2438 // Declare a bunch of static data sets that we'll select between below. These 2439 // are specifically designed to always refer to string literals to avoid any 2440 // lifetime or initialization issues. 2441 // 2442 // The *Triples variables hard code some triples so that, for example, 2443 // --target=aarch64 (incomplete triple) can detect lib/aarch64-linux-gnu. 2444 // They are not needed when the user has correct LLVM_DEFAULT_TARGET_TRIPLE 2445 // and always uses the full --target (e.g. --target=aarch64-linux-gnu). The 2446 // lists should shrink over time. Please don't add more elements to *Triples. 2447 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"}; 2448 static const char *const AArch64Triples[] = { 2449 "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-redhat-linux", 2450 "aarch64-suse-linux"}; 2451 static const char *const AArch64beLibDirs[] = {"/lib"}; 2452 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu", 2453 "aarch64_be-linux-gnu"}; 2454 2455 static const char *const ARMLibDirs[] = {"/lib"}; 2456 static const char *const ARMTriples[] = {"arm-linux-gnueabi"}; 2457 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf", 2458 "armv7hl-redhat-linux-gnueabi", 2459 "armv6hl-suse-linux-gnueabi", 2460 "armv7hl-suse-linux-gnueabi"}; 2461 static const char *const ARMebLibDirs[] = {"/lib"}; 2462 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi"}; 2463 static const char *const ARMebHFTriples[] = { 2464 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"}; 2465 2466 static const char *const AVRLibDirs[] = {"/lib"}; 2467 static const char *const AVRTriples[] = {"avr"}; 2468 2469 static const char *const CSKYLibDirs[] = {"/lib"}; 2470 static const char *const CSKYTriples[] = { 2471 "csky-linux-gnuabiv2", "csky-linux-uclibcabiv2", "csky-elf-noneabiv2"}; 2472 2473 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"}; 2474 static const char *const X86_64Triples[] = { 2475 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu", 2476 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E", 2477 "x86_64-redhat-linux", "x86_64-suse-linux", 2478 "x86_64-manbo-linux-gnu", "x86_64-linux-gnu", 2479 "x86_64-slackware-linux", "x86_64-unknown-linux", 2480 "x86_64-amazon-linux"}; 2481 static const char *const X32Triples[] = {"x86_64-linux-gnux32", 2482 "x86_64-pc-linux-gnux32"}; 2483 static const char *const X32LibDirs[] = {"/libx32", "/lib"}; 2484 static const char *const X86LibDirs[] = {"/lib32", "/lib"}; 2485 static const char *const X86Triples[] = { 2486 "i586-linux-gnu", "i686-linux-gnu", "i686-pc-linux-gnu", 2487 "i386-redhat-linux6E", "i686-redhat-linux", "i386-redhat-linux", 2488 "i586-suse-linux", "i686-montavista-linux", "i686-gnu", 2489 }; 2490 2491 static const char *const LoongArch64LibDirs[] = {"/lib64", "/lib"}; 2492 static const char *const LoongArch64Triples[] = { 2493 "loongarch64-linux-gnu", "loongarch64-unknown-linux-gnu"}; 2494 2495 static const char *const M68kLibDirs[] = {"/lib"}; 2496 static const char *const M68kTriples[] = { 2497 "m68k-linux-gnu", "m68k-unknown-linux-gnu", "m68k-suse-linux"}; 2498 2499 static const char *const MIPSLibDirs[] = {"/libo32", "/lib"}; 2500 static const char *const MIPSTriples[] = { 2501 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu", 2502 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"}; 2503 static const char *const MIPSELLibDirs[] = {"/libo32", "/lib"}; 2504 static const char *const MIPSELTriples[] = { 2505 "mipsel-linux-gnu", "mips-img-linux-gnu", "mipsisa32r6el-linux-gnu"}; 2506 2507 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"}; 2508 static const char *const MIPS64Triples[] = { 2509 "mips64-linux-gnu", "mips-mti-linux-gnu", 2510 "mips-img-linux-gnu", "mips64-linux-gnuabi64", 2511 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"}; 2512 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"}; 2513 static const char *const MIPS64ELTriples[] = { 2514 "mips64el-linux-gnu", "mips-mti-linux-gnu", 2515 "mips-img-linux-gnu", "mips64el-linux-gnuabi64", 2516 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64"}; 2517 2518 static const char *const MIPSN32LibDirs[] = {"/lib32"}; 2519 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32", 2520 "mipsisa64r6-linux-gnuabin32"}; 2521 static const char *const MIPSN32ELLibDirs[] = {"/lib32"}; 2522 static const char *const MIPSN32ELTriples[] = { 2523 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"}; 2524 2525 static const char *const MSP430LibDirs[] = {"/lib"}; 2526 static const char *const MSP430Triples[] = {"msp430-elf"}; 2527 2528 static const char *const PPCLibDirs[] = {"/lib32", "/lib"}; 2529 static const char *const PPCTriples[] = { 2530 "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe", 2531 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a 2532 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux". 2533 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"}; 2534 static const char *const PPCLELibDirs[] = {"/lib32", "/lib"}; 2535 static const char *const PPCLETriples[] = {"powerpcle-linux-gnu", 2536 "powerpcle-unknown-linux-gnu", 2537 "powerpcle-linux-musl"}; 2538 2539 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"}; 2540 static const char *const PPC64Triples[] = { 2541 "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu", 2542 "powerpc64-suse-linux", "ppc64-redhat-linux"}; 2543 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"}; 2544 static const char *const PPC64LETriples[] = { 2545 "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu", 2546 "powerpc64le-none-linux-gnu", "powerpc64le-suse-linux", 2547 "ppc64le-redhat-linux"}; 2548 2549 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"}; 2550 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu", 2551 "riscv32-linux-gnu", 2552 "riscv32-unknown-elf"}; 2553 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"}; 2554 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu", 2555 "riscv64-linux-gnu", 2556 "riscv64-unknown-elf"}; 2557 2558 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"}; 2559 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu", 2560 "sparcv8-linux-gnu"}; 2561 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"}; 2562 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu", 2563 "sparcv9-linux-gnu"}; 2564 2565 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"}; 2566 static const char *const SystemZTriples[] = { 2567 "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu", 2568 "s390x-suse-linux", "s390x-redhat-linux"}; 2569 2570 2571 using std::begin; 2572 using std::end; 2573 2574 if (TargetTriple.isOSSolaris()) { 2575 static const char *const SolarisLibDirs[] = {"/lib"}; 2576 static const char *const SolarisSparcV8Triples[] = { 2577 "sparc-sun-solaris2.11"}; 2578 static const char *const SolarisSparcV9Triples[] = { 2579 "sparcv9-sun-solaris2.11"}; 2580 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11"}; 2581 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11"}; 2582 LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 2583 BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 2584 switch (TargetTriple.getArch()) { 2585 case llvm::Triple::x86: 2586 TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples)); 2587 BiarchTripleAliases.append(begin(SolarisX86_64Triples), 2588 end(SolarisX86_64Triples)); 2589 break; 2590 case llvm::Triple::x86_64: 2591 TripleAliases.append(begin(SolarisX86_64Triples), 2592 end(SolarisX86_64Triples)); 2593 BiarchTripleAliases.append(begin(SolarisX86Triples), 2594 end(SolarisX86Triples)); 2595 break; 2596 case llvm::Triple::sparc: 2597 TripleAliases.append(begin(SolarisSparcV8Triples), 2598 end(SolarisSparcV8Triples)); 2599 BiarchTripleAliases.append(begin(SolarisSparcV9Triples), 2600 end(SolarisSparcV9Triples)); 2601 break; 2602 case llvm::Triple::sparcv9: 2603 TripleAliases.append(begin(SolarisSparcV9Triples), 2604 end(SolarisSparcV9Triples)); 2605 BiarchTripleAliases.append(begin(SolarisSparcV8Triples), 2606 end(SolarisSparcV8Triples)); 2607 break; 2608 default: 2609 break; 2610 } 2611 return; 2612 } 2613 2614 // Android targets should not use GNU/Linux tools or libraries. 2615 if (TargetTriple.isAndroid()) { 2616 static const char *const AArch64AndroidTriples[] = { 2617 "aarch64-linux-android"}; 2618 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"}; 2619 static const char *const X86AndroidTriples[] = {"i686-linux-android"}; 2620 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"}; 2621 2622 switch (TargetTriple.getArch()) { 2623 case llvm::Triple::aarch64: 2624 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2625 TripleAliases.append(begin(AArch64AndroidTriples), 2626 end(AArch64AndroidTriples)); 2627 break; 2628 case llvm::Triple::arm: 2629 case llvm::Triple::thumb: 2630 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2631 TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples)); 2632 break; 2633 case llvm::Triple::x86_64: 2634 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2635 TripleAliases.append(begin(X86_64AndroidTriples), 2636 end(X86_64AndroidTriples)); 2637 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2638 BiarchTripleAliases.append(begin(X86AndroidTriples), 2639 end(X86AndroidTriples)); 2640 break; 2641 case llvm::Triple::x86: 2642 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2643 TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples)); 2644 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2645 BiarchTripleAliases.append(begin(X86_64AndroidTriples), 2646 end(X86_64AndroidTriples)); 2647 break; 2648 default: 2649 break; 2650 } 2651 2652 return; 2653 } 2654 2655 switch (TargetTriple.getArch()) { 2656 case llvm::Triple::aarch64: 2657 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2658 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2659 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2660 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2661 break; 2662 case llvm::Triple::aarch64_be: 2663 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2664 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2665 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2666 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2667 break; 2668 case llvm::Triple::arm: 2669 case llvm::Triple::thumb: 2670 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2671 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2672 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples)); 2673 } else { 2674 TripleAliases.append(begin(ARMTriples), end(ARMTriples)); 2675 } 2676 break; 2677 case llvm::Triple::armeb: 2678 case llvm::Triple::thumbeb: 2679 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs)); 2680 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2681 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples)); 2682 } else { 2683 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples)); 2684 } 2685 break; 2686 case llvm::Triple::avr: 2687 LibDirs.append(begin(AVRLibDirs), end(AVRLibDirs)); 2688 TripleAliases.append(begin(AVRTriples), end(AVRTriples)); 2689 break; 2690 case llvm::Triple::csky: 2691 LibDirs.append(begin(CSKYLibDirs), end(CSKYLibDirs)); 2692 TripleAliases.append(begin(CSKYTriples), end(CSKYTriples)); 2693 break; 2694 case llvm::Triple::x86_64: 2695 if (TargetTriple.isX32()) { 2696 LibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2697 TripleAliases.append(begin(X32Triples), end(X32Triples)); 2698 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2699 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2700 } else { 2701 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2702 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2703 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2704 BiarchTripleAliases.append(begin(X32Triples), end(X32Triples)); 2705 } 2706 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2707 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples)); 2708 break; 2709 case llvm::Triple::x86: 2710 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2711 // MCU toolchain is 32 bit only and its triple alias is TargetTriple 2712 // itself, which will be appended below. 2713 if (!TargetTriple.isOSIAMCU()) { 2714 TripleAliases.append(begin(X86Triples), end(X86Triples)); 2715 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2716 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2717 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2718 BiarchTripleAliases.append(begin(X32Triples), end(X32Triples)); 2719 } 2720 break; 2721 // TODO: Handle loongarch32. 2722 case llvm::Triple::loongarch64: 2723 LibDirs.append(begin(LoongArch64LibDirs), end(LoongArch64LibDirs)); 2724 TripleAliases.append(begin(LoongArch64Triples), end(LoongArch64Triples)); 2725 break; 2726 case llvm::Triple::m68k: 2727 LibDirs.append(begin(M68kLibDirs), end(M68kLibDirs)); 2728 TripleAliases.append(begin(M68kTriples), end(M68kTriples)); 2729 break; 2730 case llvm::Triple::mips: 2731 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2732 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2733 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2734 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2735 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs)); 2736 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples)); 2737 break; 2738 case llvm::Triple::mipsel: 2739 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2740 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2741 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2742 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2743 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2744 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs)); 2745 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples)); 2746 break; 2747 case llvm::Triple::mips64: 2748 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2749 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2750 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2751 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2752 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs)); 2753 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples)); 2754 break; 2755 case llvm::Triple::mips64el: 2756 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2757 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2758 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2759 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2760 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs)); 2761 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples)); 2762 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2763 break; 2764 case llvm::Triple::msp430: 2765 LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs)); 2766 TripleAliases.append(begin(MSP430Triples), end(MSP430Triples)); 2767 break; 2768 case llvm::Triple::ppc: 2769 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2770 TripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2771 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2772 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2773 break; 2774 case llvm::Triple::ppcle: 2775 LibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs)); 2776 TripleAliases.append(begin(PPCLETriples), end(PPCLETriples)); 2777 BiarchLibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs)); 2778 BiarchTripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples)); 2779 break; 2780 case llvm::Triple::ppc64: 2781 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2782 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2783 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2784 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2785 break; 2786 case llvm::Triple::ppc64le: 2787 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs)); 2788 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples)); 2789 BiarchLibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs)); 2790 BiarchTripleAliases.append(begin(PPCLETriples), end(PPCLETriples)); 2791 break; 2792 case llvm::Triple::riscv32: 2793 LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2794 TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples)); 2795 BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs)); 2796 BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples)); 2797 break; 2798 case llvm::Triple::riscv64: 2799 LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs)); 2800 TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples)); 2801 BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2802 BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples)); 2803 break; 2804 case llvm::Triple::sparc: 2805 case llvm::Triple::sparcel: 2806 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2807 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2808 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2809 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2810 break; 2811 case llvm::Triple::sparcv9: 2812 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2813 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2814 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2815 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2816 break; 2817 case llvm::Triple::systemz: 2818 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs)); 2819 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples)); 2820 break; 2821 default: 2822 // By default, just rely on the standard lib directories and the original 2823 // triple. 2824 break; 2825 } 2826 2827 // Also include the multiarch variant if it's different. 2828 if (TargetTriple.str() != BiarchTriple.str()) 2829 BiarchTripleAliases.push_back(BiarchTriple.str()); 2830 } 2831 2832 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs( 2833 const llvm::Triple &TargetTriple, const ArgList &Args, 2834 StringRef Path, bool NeedsBiarchSuffix) { 2835 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 2836 DetectedMultilibs Detected; 2837 2838 // Android standalone toolchain could have multilibs for ARM and Thumb. 2839 // Debian mips multilibs behave more like the rest of the biarch ones, 2840 // so handle them there 2841 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) { 2842 // It should also work without multilibs in a simplified toolchain. 2843 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected); 2844 } else if (TargetTriple.isCSKY()) { 2845 findCSKYMultilibs(D, TargetTriple, Path, Args, Detected); 2846 } else if (TargetTriple.isMIPS()) { 2847 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected)) 2848 return false; 2849 } else if (TargetTriple.isRISCV()) { 2850 findRISCVMultilibs(D, TargetTriple, Path, Args, Detected); 2851 } else if (isMSP430(TargetArch)) { 2852 findMSP430Multilibs(D, TargetTriple, Path, Args, Detected); 2853 } else if (TargetArch == llvm::Triple::avr) { 2854 // AVR has no multilibs. 2855 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args, 2856 NeedsBiarchSuffix, Detected)) { 2857 return false; 2858 } 2859 2860 Multilibs = Detected.Multilibs; 2861 SelectedMultilib = Detected.SelectedMultilibs.empty() 2862 ? Multilib() 2863 : Detected.SelectedMultilibs.back(); 2864 BiarchSibling = Detected.BiarchSibling; 2865 2866 return true; 2867 } 2868 2869 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple( 2870 const llvm::Triple &TargetTriple, const ArgList &Args, 2871 const std::string &LibDir, StringRef CandidateTriple, 2872 bool NeedsBiarchSuffix, bool GCCDirExists, bool GCCCrossDirExists) { 2873 // Locations relative to the system lib directory where GCC's triple-specific 2874 // directories might reside. 2875 struct GCCLibSuffix { 2876 // Path from system lib directory to GCC triple-specific directory. 2877 std::string LibSuffix; 2878 // Path from GCC triple-specific directory back to system lib directory. 2879 // This is one '..' component per component in LibSuffix. 2880 StringRef ReversePath; 2881 // Whether this library suffix is relevant for the triple. 2882 bool Active; 2883 } Suffixes[] = { 2884 // This is the normal place. 2885 {"gcc/" + CandidateTriple.str(), "../..", GCCDirExists}, 2886 2887 // Debian puts cross-compilers in gcc-cross. 2888 {"gcc-cross/" + CandidateTriple.str(), "../..", GCCCrossDirExists}, 2889 2890 // The Freescale PPC SDK has the gcc libraries in 2891 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do 2892 // this on Freescale triples, though, since some systems put a *lot* of 2893 // files in that location, not just GCC installation data. 2894 {CandidateTriple.str(), "..", 2895 TargetTriple.getVendor() == llvm::Triple::Freescale || 2896 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}}; 2897 2898 for (auto &Suffix : Suffixes) { 2899 if (!Suffix.Active) 2900 continue; 2901 2902 StringRef LibSuffix = Suffix.LibSuffix; 2903 std::error_code EC; 2904 for (llvm::vfs::directory_iterator 2905 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC), 2906 LE; 2907 !EC && LI != LE; LI = LI.increment(EC)) { 2908 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2909 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 2910 if (CandidateVersion.Major != -1) // Filter obviously bad entries. 2911 if (!CandidateGCCInstallPaths.insert(std::string(LI->path())).second) 2912 continue; // Saw this path before; no need to look at it again. 2913 if (CandidateVersion.isOlderThan(4, 1, 1)) 2914 continue; 2915 if (CandidateVersion <= Version) 2916 continue; 2917 2918 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(), 2919 NeedsBiarchSuffix)) 2920 continue; 2921 2922 Version = CandidateVersion; 2923 GCCTriple.setTriple(CandidateTriple); 2924 // FIXME: We hack together the directory name here instead of 2925 // using LI to ensure stable path separators across Windows and 2926 // Linux. 2927 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str(); 2928 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str(); 2929 IsValid = true; 2930 } 2931 } 2932 } 2933 2934 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs( 2935 const llvm::Triple &TargetTriple, const ArgList &Args, 2936 const SmallVectorImpl<StringRef> &CandidateTriples, 2937 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) { 2938 if (!D.getVFS().exists(concat(D.SysRoot, GentooConfigDir))) 2939 return false; 2940 2941 for (StringRef CandidateTriple : CandidateTriples) { 2942 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple)) 2943 return true; 2944 } 2945 2946 for (StringRef CandidateTriple : CandidateBiarchTriples) { 2947 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true)) 2948 return true; 2949 } 2950 return false; 2951 } 2952 2953 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig( 2954 const llvm::Triple &TargetTriple, const ArgList &Args, 2955 StringRef CandidateTriple, bool NeedsBiarchSuffix) { 2956 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File = 2957 D.getVFS().getBufferForFile(concat(D.SysRoot, GentooConfigDir, 2958 "/config-" + CandidateTriple.str())); 2959 if (File) { 2960 SmallVector<StringRef, 2> Lines; 2961 File.get()->getBuffer().split(Lines, "\n"); 2962 for (StringRef Line : Lines) { 2963 Line = Line.trim(); 2964 // CURRENT=triple-version 2965 if (!Line.consume_front("CURRENT=")) 2966 continue; 2967 // Process the config file pointed to by CURRENT. 2968 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile = 2969 D.getVFS().getBufferForFile( 2970 concat(D.SysRoot, GentooConfigDir, "/" + Line)); 2971 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-'); 2972 // List of paths to scan for libraries. 2973 SmallVector<StringRef, 4> GentooScanPaths; 2974 // Scan the Config file to find installed GCC libraries path. 2975 // Typical content of the GCC config file: 2976 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/ 2977 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32" 2978 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man" 2979 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info" 2980 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4" 2981 // We are looking for the paths listed in LDPATH=... . 2982 if (ConfigFile) { 2983 SmallVector<StringRef, 2> ConfigLines; 2984 ConfigFile.get()->getBuffer().split(ConfigLines, "\n"); 2985 for (StringRef ConfLine : ConfigLines) { 2986 ConfLine = ConfLine.trim(); 2987 if (ConfLine.consume_front("LDPATH=")) { 2988 // Drop '"' from front and back if present. 2989 ConfLine.consume_back("\""); 2990 ConfLine.consume_front("\""); 2991 // Get all paths sperated by ':' 2992 ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false); 2993 } 2994 } 2995 } 2996 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}. 2997 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/" 2998 + ActiveVersion.second.str(); 2999 GentooScanPaths.push_back(StringRef(basePath)); 3000 3001 // Scan all paths for GCC libraries. 3002 for (const auto &GentooScanPath : GentooScanPaths) { 3003 std::string GentooPath = concat(D.SysRoot, GentooScanPath); 3004 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) { 3005 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath, 3006 NeedsBiarchSuffix)) 3007 continue; 3008 3009 Version = GCCVersion::Parse(ActiveVersion.second); 3010 GCCInstallPath = GentooPath; 3011 GCCParentLibPath = GentooPath + std::string("/../../.."); 3012 GCCTriple.setTriple(ActiveVersion.first); 3013 IsValid = true; 3014 return true; 3015 } 3016 } 3017 } 3018 } 3019 3020 return false; 3021 } 3022 3023 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple, 3024 const ArgList &Args) 3025 : ToolChain(D, Triple, Args), GCCInstallation(D), 3026 CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args) { 3027 getProgramPaths().push_back(getDriver().getInstalledDir()); 3028 if (getDriver().getInstalledDir() != getDriver().Dir) 3029 getProgramPaths().push_back(getDriver().Dir); 3030 } 3031 3032 Generic_GCC::~Generic_GCC() {} 3033 3034 Tool *Generic_GCC::getTool(Action::ActionClass AC) const { 3035 switch (AC) { 3036 case Action::PreprocessJobClass: 3037 if (!Preprocess) 3038 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this)); 3039 return Preprocess.get(); 3040 case Action::CompileJobClass: 3041 if (!Compile) 3042 Compile.reset(new tools::gcc::Compiler(*this)); 3043 return Compile.get(); 3044 default: 3045 return ToolChain::getTool(AC); 3046 } 3047 } 3048 3049 Tool *Generic_GCC::buildAssembler() const { 3050 return new tools::gnutools::Assembler(*this); 3051 } 3052 3053 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); } 3054 3055 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const { 3056 // Print the information about how we detected the GCC installation. 3057 GCCInstallation.print(OS); 3058 CudaInstallation->print(OS); 3059 RocmInstallation->print(OS); 3060 } 3061 3062 ToolChain::UnwindTableLevel 3063 Generic_GCC::getDefaultUnwindTableLevel(const ArgList &Args) const { 3064 switch (getArch()) { 3065 case llvm::Triple::aarch64: 3066 case llvm::Triple::aarch64_be: 3067 case llvm::Triple::ppc: 3068 case llvm::Triple::ppcle: 3069 case llvm::Triple::ppc64: 3070 case llvm::Triple::ppc64le: 3071 case llvm::Triple::riscv32: 3072 case llvm::Triple::riscv64: 3073 case llvm::Triple::x86: 3074 case llvm::Triple::x86_64: 3075 return UnwindTableLevel::Asynchronous; 3076 default: 3077 return UnwindTableLevel::None; 3078 } 3079 } 3080 3081 bool Generic_GCC::isPICDefault() const { 3082 switch (getArch()) { 3083 case llvm::Triple::x86_64: 3084 return getTriple().isOSWindows(); 3085 case llvm::Triple::mips64: 3086 case llvm::Triple::mips64el: 3087 return true; 3088 default: 3089 return false; 3090 } 3091 } 3092 3093 bool Generic_GCC::isPIEDefault(const llvm::opt::ArgList &Args) const { 3094 return false; 3095 } 3096 3097 bool Generic_GCC::isPICDefaultForced() const { 3098 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows(); 3099 } 3100 3101 bool Generic_GCC::IsIntegratedAssemblerDefault() const { 3102 switch (getTriple().getArch()) { 3103 case llvm::Triple::nvptx: 3104 case llvm::Triple::nvptx64: 3105 case llvm::Triple::xcore: 3106 return false; 3107 default: 3108 return true; 3109 } 3110 } 3111 3112 void Generic_GCC::PushPPaths(ToolChain::path_list &PPaths) { 3113 // Cross-compiling binutils and GCC installations (vanilla and openSUSE at 3114 // least) put various tools in a triple-prefixed directory off of the parent 3115 // of the GCC installation. We use the GCC triple here to ensure that we end 3116 // up with tools that support the same amount of cross compiling as the 3117 // detected GCC installation. For example, if we find a GCC installation 3118 // targeting x86_64, but it is a bi-arch GCC installation, it can also be 3119 // used to target i386. 3120 if (GCCInstallation.isValid()) { 3121 PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" + 3122 GCCInstallation.getTriple().str() + "/bin") 3123 .str()); 3124 } 3125 } 3126 3127 void Generic_GCC::AddMultilibPaths(const Driver &D, 3128 const std::string &SysRoot, 3129 const std::string &OSLibDir, 3130 const std::string &MultiarchTriple, 3131 path_list &Paths) { 3132 // Add the multilib suffixed paths where they are available. 3133 if (GCCInstallation.isValid()) { 3134 assert(!SelectedMultilibs.empty()); 3135 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 3136 const std::string &LibPath = 3137 std::string(GCCInstallation.getParentLibPath()); 3138 3139 // Sourcery CodeBench MIPS toolchain holds some libraries under 3140 // a biarch-like suffix of the GCC installation. 3141 if (const auto &PathsCallback = Multilibs.filePathsCallback()) 3142 for (const auto &Path : PathsCallback(SelectedMultilibs.back())) 3143 addPathIfExists(D, GCCInstallation.getInstallPath() + Path, Paths); 3144 3145 // Add lib/gcc/$triple/$version, with an optional /multilib suffix. 3146 addPathIfExists(D, 3147 GCCInstallation.getInstallPath() + 3148 SelectedMultilibs.back().gccSuffix(), 3149 Paths); 3150 3151 // Add lib/gcc/$triple/$libdir 3152 // For GCC built with --enable-version-specific-runtime-libs. 3153 addPathIfExists(D, GCCInstallation.getInstallPath() + "/../" + OSLibDir, 3154 Paths); 3155 3156 // GCC cross compiling toolchains will install target libraries which ship 3157 // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as 3158 // any part of the GCC installation in 3159 // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat 3160 // debatable, but is the reality today. We need to search this tree even 3161 // when we have a sysroot somewhere else. It is the responsibility of 3162 // whomever is doing the cross build targeting a sysroot using a GCC 3163 // installation that is *not* within the system root to ensure two things: 3164 // 3165 // 1) Any DSOs that are linked in from this tree or from the install path 3166 // above must be present on the system root and found via an 3167 // appropriate rpath. 3168 // 2) There must not be libraries installed into 3169 // <prefix>/<triple>/<libdir> unless they should be preferred over 3170 // those within the system root. 3171 // 3172 // Note that this matches the GCC behavior. See the below comment for where 3173 // Clang diverges from GCC's behavior. 3174 addPathIfExists(D, 3175 LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir + 3176 SelectedMultilibs.back().osSuffix(), 3177 Paths); 3178 3179 // If the GCC installation we found is inside of the sysroot, we want to 3180 // prefer libraries installed in the parent prefix of the GCC installation. 3181 // It is important to *not* use these paths when the GCC installation is 3182 // outside of the system root as that can pick up unintended libraries. 3183 // This usually happens when there is an external cross compiler on the 3184 // host system, and a more minimal sysroot available that is the target of 3185 // the cross. Note that GCC does include some of these directories in some 3186 // configurations but this seems somewhere between questionable and simply 3187 // a bug. 3188 if (StringRef(LibPath).starts_with(SysRoot)) 3189 addPathIfExists(D, LibPath + "/../" + OSLibDir, Paths); 3190 } 3191 } 3192 3193 void Generic_GCC::AddMultiarchPaths(const Driver &D, 3194 const std::string &SysRoot, 3195 const std::string &OSLibDir, 3196 path_list &Paths) { 3197 if (GCCInstallation.isValid()) { 3198 const std::string &LibPath = 3199 std::string(GCCInstallation.getParentLibPath()); 3200 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 3201 const Multilib &Multilib = GCCInstallation.getMultilib(); 3202 addPathIfExists( 3203 D, LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(), 3204 Paths); 3205 } 3206 } 3207 3208 void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs, 3209 ArgStringList &CC1Args) const { 3210 // Add include directories specific to the selected multilib set and multilib. 3211 if (!GCCInstallation.isValid()) 3212 return; 3213 // gcc TOOL_INCLUDE_DIR. 3214 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 3215 std::string LibPath(GCCInstallation.getParentLibPath()); 3216 addSystemInclude(DriverArgs, CC1Args, 3217 Twine(LibPath) + "/../" + GCCTriple.str() + "/include"); 3218 3219 const auto &Callback = Multilibs.includeDirsCallback(); 3220 if (Callback) { 3221 for (const auto &Path : Callback(GCCInstallation.getMultilib())) 3222 addExternCSystemIncludeIfExists(DriverArgs, CC1Args, 3223 GCCInstallation.getInstallPath() + Path); 3224 } 3225 } 3226 3227 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 3228 ArgStringList &CC1Args) const { 3229 if (DriverArgs.hasArg(options::OPT_nostdinc, options::OPT_nostdincxx, 3230 options::OPT_nostdlibinc)) 3231 return; 3232 3233 switch (GetCXXStdlibType(DriverArgs)) { 3234 case ToolChain::CST_Libcxx: 3235 addLibCxxIncludePaths(DriverArgs, CC1Args); 3236 break; 3237 3238 case ToolChain::CST_Libstdcxx: 3239 addLibStdCxxIncludePaths(DriverArgs, CC1Args); 3240 break; 3241 } 3242 } 3243 3244 void 3245 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 3246 llvm::opt::ArgStringList &CC1Args) const { 3247 const Driver &D = getDriver(); 3248 std::string SysRoot = computeSysRoot(); 3249 if (SysRoot.empty()) 3250 SysRoot = llvm::sys::path::get_separator(); 3251 3252 auto AddIncludePath = [&](StringRef Path, bool TargetDirRequired = false) { 3253 std::string Version = detectLibcxxVersion(Path); 3254 if (Version.empty()) 3255 return false; 3256 3257 // First add the per-target include path if it exists. 3258 bool TargetDirExists = false; 3259 std::optional<std::string> TargetIncludeDir = getTargetSubDirPath(Path); 3260 if (TargetIncludeDir) { 3261 SmallString<128> TargetDir(*TargetIncludeDir); 3262 llvm::sys::path::append(TargetDir, "c++", Version); 3263 if (D.getVFS().exists(TargetDir)) { 3264 addSystemInclude(DriverArgs, CC1Args, TargetDir); 3265 TargetDirExists = true; 3266 } 3267 } 3268 if (TargetDirRequired && !TargetDirExists) 3269 return false; 3270 3271 // Second add the generic one. 3272 SmallString<128> GenericDir(Path); 3273 llvm::sys::path::append(GenericDir, "c++", Version); 3274 addSystemInclude(DriverArgs, CC1Args, GenericDir); 3275 return true; 3276 }; 3277 3278 // Android only uses the libc++ headers installed alongside the toolchain if 3279 // they contain an Android-specific target include path, otherwise they're 3280 // incompatible with the NDK libraries. 3281 SmallString<128> DriverIncludeDir(getDriver().Dir); 3282 llvm::sys::path::append(DriverIncludeDir, "..", "include"); 3283 if (AddIncludePath(DriverIncludeDir, 3284 /*TargetDirRequired=*/getTriple().isAndroid())) 3285 return; 3286 // If this is a development, non-installed, clang, libcxx will 3287 // not be found at ../include/c++ but it likely to be found at 3288 // one of the following two locations: 3289 SmallString<128> UsrLocalIncludeDir(SysRoot); 3290 llvm::sys::path::append(UsrLocalIncludeDir, "usr", "local", "include"); 3291 if (AddIncludePath(UsrLocalIncludeDir)) 3292 return; 3293 SmallString<128> UsrIncludeDir(SysRoot); 3294 llvm::sys::path::append(UsrIncludeDir, "usr", "include"); 3295 if (AddIncludePath(UsrIncludeDir)) 3296 return; 3297 } 3298 3299 bool Generic_GCC::addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple, 3300 Twine IncludeSuffix, 3301 const llvm::opt::ArgList &DriverArgs, 3302 llvm::opt::ArgStringList &CC1Args, 3303 bool DetectDebian) const { 3304 if (!getVFS().exists(IncludeDir)) 3305 return false; 3306 3307 // Debian native gcc uses g++-multiarch-incdir.diff which uses 3308 // include/x86_64-linux-gnu/c++/10$IncludeSuffix instead of 3309 // include/c++/10/x86_64-linux-gnu$IncludeSuffix. 3310 std::string Dir = IncludeDir.str(); 3311 StringRef Include = 3312 llvm::sys::path::parent_path(llvm::sys::path::parent_path(Dir)); 3313 std::string Path = 3314 (Include + "/" + Triple + Dir.substr(Include.size()) + IncludeSuffix) 3315 .str(); 3316 if (DetectDebian && !getVFS().exists(Path)) 3317 return false; 3318 3319 // GPLUSPLUS_INCLUDE_DIR 3320 addSystemInclude(DriverArgs, CC1Args, IncludeDir); 3321 // GPLUSPLUS_TOOL_INCLUDE_DIR. If Triple is not empty, add a target-dependent 3322 // include directory. 3323 if (DetectDebian) 3324 addSystemInclude(DriverArgs, CC1Args, Path); 3325 else if (!Triple.empty()) 3326 addSystemInclude(DriverArgs, CC1Args, 3327 IncludeDir + "/" + Triple + IncludeSuffix); 3328 // GPLUSPLUS_BACKWARD_INCLUDE_DIR 3329 addSystemInclude(DriverArgs, CC1Args, IncludeDir + "/backward"); 3330 return true; 3331 } 3332 3333 bool Generic_GCC::addGCCLibStdCxxIncludePaths( 3334 const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, 3335 StringRef DebianMultiarch) const { 3336 assert(GCCInstallation.isValid()); 3337 3338 // By default, look for the C++ headers in an include directory adjacent to 3339 // the lib directory of the GCC installation. Note that this is expect to be 3340 // equivalent to '/usr/include/c++/X.Y' in almost all cases. 3341 StringRef LibDir = GCCInstallation.getParentLibPath(); 3342 StringRef InstallDir = GCCInstallation.getInstallPath(); 3343 StringRef TripleStr = GCCInstallation.getTriple().str(); 3344 const Multilib &Multilib = GCCInstallation.getMultilib(); 3345 const GCCVersion &Version = GCCInstallation.getVersion(); 3346 3347 // Try /../$triple/include/c++/$version (gcc --print-multiarch is not empty). 3348 if (addLibStdCXXIncludePaths( 3349 LibDir.str() + "/../" + TripleStr + "/include/c++/" + Version.Text, 3350 TripleStr, Multilib.includeSuffix(), DriverArgs, CC1Args)) 3351 return true; 3352 3353 // Try /gcc/$triple/$version/include/c++/ (gcc --print-multiarch is not 3354 // empty). Like above but for GCC built with 3355 // --enable-version-specific-runtime-libs. 3356 if (addLibStdCXXIncludePaths(LibDir.str() + "/gcc/" + TripleStr + "/" + 3357 Version.Text + "/include/c++/", 3358 TripleStr, Multilib.includeSuffix(), DriverArgs, 3359 CC1Args)) 3360 return true; 3361 3362 // Detect Debian g++-multiarch-incdir.diff. 3363 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text, 3364 DebianMultiarch, Multilib.includeSuffix(), 3365 DriverArgs, CC1Args, /*Debian=*/true)) 3366 return true; 3367 3368 // Try /../include/c++/$version (gcc --print-multiarch is empty). 3369 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text, 3370 TripleStr, Multilib.includeSuffix(), DriverArgs, 3371 CC1Args)) 3372 return true; 3373 3374 // Otherwise, fall back on a bunch of options which don't use multiarch 3375 // layouts for simplicity. 3376 const std::string LibStdCXXIncludePathCandidates[] = { 3377 // Gentoo is weird and places its headers inside the GCC install, 3378 // so if the first attempt to find the headers fails, try these patterns. 3379 InstallDir.str() + "/include/g++-v" + Version.Text, 3380 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." + 3381 Version.MinorStr, 3382 InstallDir.str() + "/include/g++-v" + Version.MajorStr, 3383 }; 3384 3385 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) { 3386 if (addLibStdCXXIncludePaths(IncludePath, TripleStr, 3387 Multilib.includeSuffix(), DriverArgs, CC1Args)) 3388 return true; 3389 } 3390 return false; 3391 } 3392 3393 void 3394 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 3395 llvm::opt::ArgStringList &CC1Args) const { 3396 if (GCCInstallation.isValid()) { 3397 addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args, 3398 GCCInstallation.getTriple().str()); 3399 } 3400 } 3401 3402 llvm::opt::DerivedArgList * 3403 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef, 3404 Action::OffloadKind DeviceOffloadKind) const { 3405 3406 // If this tool chain is used for an OpenMP offloading device we have to make 3407 // sure we always generate a shared library regardless of the commands the 3408 // user passed to the host. This is required because the runtime library 3409 // is required to load the device image dynamically at run time. 3410 if (DeviceOffloadKind == Action::OFK_OpenMP) { 3411 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs()); 3412 const OptTable &Opts = getDriver().getOpts(); 3413 3414 // Request the shared library. Given that these options are decided 3415 // implicitly, they do not refer to any base argument. 3416 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared)); 3417 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC)); 3418 3419 // Filter all the arguments we don't care passing to the offloading 3420 // toolchain as they can mess up with the creation of a shared library. 3421 for (auto *A : Args) { 3422 switch ((options::ID)A->getOption().getID()) { 3423 default: 3424 DAL->append(A); 3425 break; 3426 case options::OPT_shared: 3427 case options::OPT_dynamic: 3428 case options::OPT_static: 3429 case options::OPT_fPIC: 3430 case options::OPT_fno_PIC: 3431 case options::OPT_fpic: 3432 case options::OPT_fno_pic: 3433 case options::OPT_fPIE: 3434 case options::OPT_fno_PIE: 3435 case options::OPT_fpie: 3436 case options::OPT_fno_pie: 3437 break; 3438 } 3439 } 3440 return DAL; 3441 } 3442 return nullptr; 3443 } 3444 3445 void Generic_ELF::anchor() {} 3446 3447 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs, 3448 ArgStringList &CC1Args, 3449 Action::OffloadKind) const { 3450 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array, 3451 options::OPT_fno_use_init_array, true)) 3452 CC1Args.push_back("-fno-use-init-array"); 3453 } 3454