1 //===--- Gnu.cpp - Gnu Tool and ToolChain Implementations -------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "Gnu.h" 10 #include "Arch/ARM.h" 11 #include "Arch/CSKY.h" 12 #include "Arch/LoongArch.h" 13 #include "Arch/Mips.h" 14 #include "Arch/PPC.h" 15 #include "Arch/RISCV.h" 16 #include "Arch/Sparc.h" 17 #include "Arch/SystemZ.h" 18 #include "CommonArgs.h" 19 #include "Linux.h" 20 #include "clang/Config/config.h" // for GCC_INSTALL_PREFIX 21 #include "clang/Driver/Compilation.h" 22 #include "clang/Driver/Driver.h" 23 #include "clang/Driver/DriverDiagnostic.h" 24 #include "clang/Driver/MultilibBuilder.h" 25 #include "clang/Driver/Options.h" 26 #include "clang/Driver/Tool.h" 27 #include "clang/Driver/ToolChain.h" 28 #include "llvm/ADT/StringSet.h" 29 #include "llvm/ADT/Twine.h" 30 #include "llvm/Option/ArgList.h" 31 #include "llvm/Support/CodeGen.h" 32 #include "llvm/Support/Path.h" 33 #include "llvm/Support/VirtualFileSystem.h" 34 #include "llvm/TargetParser/RISCVISAInfo.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") || T.isABIN32()) 273 return "elf32btsmipn32"; 274 return "elf64btsmip"; 275 case llvm::Triple::mips64el: 276 if (tools::mips::hasMipsAbiArg(Args, "n32") || T.isABIN32()) 277 return "elf32ltsmipn32"; 278 return "elf64ltsmip"; 279 case llvm::Triple::systemz: 280 return "elf64_s390"; 281 case llvm::Triple::x86_64: 282 if (T.isX32()) 283 return "elf32_x86_64"; 284 return "elf_x86_64"; 285 case llvm::Triple::ve: 286 return "elf64ve"; 287 case llvm::Triple::csky: 288 return "cskyelf_linux"; 289 default: 290 return nullptr; 291 } 292 } 293 294 static bool getStaticPIE(const ArgList &Args, const ToolChain &TC) { 295 bool HasStaticPIE = Args.hasArg(options::OPT_static_pie); 296 if (HasStaticPIE && Args.hasArg(options::OPT_no_pie)) { 297 const Driver &D = TC.getDriver(); 298 const llvm::opt::OptTable &Opts = D.getOpts(); 299 StringRef StaticPIEName = Opts.getOptionName(options::OPT_static_pie); 300 StringRef NoPIEName = Opts.getOptionName(options::OPT_nopie); 301 D.Diag(diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName; 302 } 303 return HasStaticPIE; 304 } 305 306 static bool getStatic(const ArgList &Args) { 307 return Args.hasArg(options::OPT_static) && 308 !Args.hasArg(options::OPT_static_pie); 309 } 310 311 void tools::gnutools::StaticLibTool::ConstructJob( 312 Compilation &C, const JobAction &JA, const InputInfo &Output, 313 const InputInfoList &Inputs, const ArgList &Args, 314 const char *LinkingOutput) const { 315 const Driver &D = getToolChain().getDriver(); 316 317 // Silence warning for "clang -g foo.o -o foo" 318 Args.ClaimAllArgs(options::OPT_g_Group); 319 // and "clang -emit-llvm foo.o -o foo" 320 Args.ClaimAllArgs(options::OPT_emit_llvm); 321 // and for "clang -w foo.o -o foo". Other warning options are already 322 // handled somewhere else. 323 Args.ClaimAllArgs(options::OPT_w); 324 // Silence warnings when linking C code with a C++ '-stdlib' argument. 325 Args.ClaimAllArgs(options::OPT_stdlib_EQ); 326 327 // ar tool command "llvm-ar <options> <output_file> <input_files>". 328 ArgStringList CmdArgs; 329 // Create and insert file members with a deterministic index. 330 CmdArgs.push_back("rcsD"); 331 CmdArgs.push_back(Output.getFilename()); 332 333 for (const auto &II : Inputs) { 334 if (II.isFilename()) { 335 CmdArgs.push_back(II.getFilename()); 336 } 337 } 338 339 // Delete old output archive file if it already exists before generating a new 340 // archive file. 341 auto OutputFileName = Output.getFilename(); 342 if (Output.isFilename() && llvm::sys::fs::exists(OutputFileName)) { 343 if (std::error_code EC = llvm::sys::fs::remove(OutputFileName)) { 344 D.Diag(diag::err_drv_unable_to_remove_file) << EC.message(); 345 return; 346 } 347 } 348 349 const char *Exec = Args.MakeArgString(getToolChain().GetStaticLibToolPath()); 350 C.addCommand(std::make_unique<Command>(JA, *this, 351 ResponseFileSupport::AtFileCurCP(), 352 Exec, CmdArgs, Inputs, Output)); 353 } 354 355 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA, 356 const InputInfo &Output, 357 const InputInfoList &Inputs, 358 const ArgList &Args, 359 const char *LinkingOutput) const { 360 // FIXME: The Linker class constructor takes a ToolChain and not a 361 // Generic_ELF, so the static_cast might return a reference to a invalid 362 // instance (see PR45061). Ideally, the Linker constructor needs to take a 363 // Generic_ELF instead. 364 const auto &ToolChain = static_cast<const Generic_ELF &>(getToolChain()); 365 const Driver &D = ToolChain.getDriver(); 366 367 const llvm::Triple &Triple = getToolChain().getEffectiveTriple(); 368 369 const llvm::Triple::ArchType Arch = ToolChain.getArch(); 370 const bool isOHOSFamily = ToolChain.getTriple().isOHOSFamily(); 371 const bool isAndroid = ToolChain.getTriple().isAndroid(); 372 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU(); 373 const bool IsVE = ToolChain.getTriple().isVE(); 374 const bool IsStaticPIE = getStaticPIE(Args, ToolChain); 375 const bool IsStatic = getStatic(Args); 376 const bool HasCRTBeginEndFiles = 377 ToolChain.getTriple().hasEnvironment() || 378 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies); 379 380 ArgStringList CmdArgs; 381 382 // Silence warning for "clang -g foo.o -o foo" 383 Args.ClaimAllArgs(options::OPT_g_Group); 384 // and "clang -emit-llvm foo.o -o foo" 385 Args.ClaimAllArgs(options::OPT_emit_llvm); 386 // and for "clang -w foo.o -o foo". Other warning options are already 387 // handled somewhere else. 388 Args.ClaimAllArgs(options::OPT_w); 389 390 if (!D.SysRoot.empty()) 391 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 392 393 if (Args.hasArg(options::OPT_s)) 394 CmdArgs.push_back("-s"); 395 396 if (Triple.isARM() || Triple.isThumb()) { 397 bool IsBigEndian = arm::isARMBigEndian(Triple, Args); 398 if (IsBigEndian) 399 arm::appendBE8LinkFlag(Args, CmdArgs, Triple); 400 CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL"); 401 } else if (Triple.isAArch64()) { 402 CmdArgs.push_back(Arch == llvm::Triple::aarch64_be ? "-EB" : "-EL"); 403 } 404 405 // Most Android ARM64 targets should enable the linker fix for erratum 406 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag. 407 if (Arch == llvm::Triple::aarch64 && (isAndroid || isOHOSFamily)) { 408 std::string CPU = getCPUName(D, Args, Triple); 409 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53") 410 CmdArgs.push_back("--fix-cortex-a53-843419"); 411 } 412 413 ToolChain.addExtraOpts(CmdArgs); 414 415 CmdArgs.push_back("--eh-frame-hdr"); 416 417 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) { 418 CmdArgs.push_back("-m"); 419 CmdArgs.push_back(LDMOption); 420 } else { 421 D.Diag(diag::err_target_unknown_triple) << Triple.str(); 422 return; 423 } 424 425 if (Triple.isLoongArch() || Triple.isRISCV()) { 426 CmdArgs.push_back("-X"); 427 if (Args.hasArg(options::OPT_mno_relax)) 428 CmdArgs.push_back("--no-relax"); 429 } 430 431 const bool IsShared = Args.hasArg(options::OPT_shared); 432 if (IsShared) 433 CmdArgs.push_back("-shared"); 434 bool IsPIE = false; 435 if (IsStaticPIE) { 436 CmdArgs.push_back("-static"); 437 CmdArgs.push_back("-pie"); 438 CmdArgs.push_back("--no-dynamic-linker"); 439 CmdArgs.push_back("-z"); 440 CmdArgs.push_back("text"); 441 } else if (IsStatic) { 442 CmdArgs.push_back("-static"); 443 } else if (!Args.hasArg(options::OPT_r)) { 444 if (Args.hasArg(options::OPT_rdynamic)) 445 CmdArgs.push_back("-export-dynamic"); 446 if (!IsShared) { 447 IsPIE = Args.hasFlag(options::OPT_pie, options::OPT_no_pie, 448 ToolChain.isPIEDefault(Args)); 449 if (IsPIE) 450 CmdArgs.push_back("-pie"); 451 CmdArgs.push_back("-dynamic-linker"); 452 CmdArgs.push_back(Args.MakeArgString(Twine(D.DyldPrefix) + 453 ToolChain.getDynamicLinker(Args))); 454 } 455 } 456 457 CmdArgs.push_back("-o"); 458 CmdArgs.push_back(Output.getFilename()); 459 460 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles, 461 options::OPT_r)) { 462 if (!isAndroid && !IsIAMCU) { 463 const char *crt1 = nullptr; 464 if (!Args.hasArg(options::OPT_shared)) { 465 if (Args.hasArg(options::OPT_pg)) 466 crt1 = "gcrt1.o"; 467 else if (IsPIE) 468 crt1 = "Scrt1.o"; 469 else if (IsStaticPIE) 470 crt1 = "rcrt1.o"; 471 else 472 crt1 = "crt1.o"; 473 } 474 if (crt1) 475 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1))); 476 477 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o"))); 478 } 479 480 if (IsVE) { 481 CmdArgs.push_back("-z"); 482 CmdArgs.push_back("max-page-size=0x4000000"); 483 } 484 485 if (IsIAMCU) 486 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o"))); 487 else if (HasCRTBeginEndFiles) { 488 std::string P; 489 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT && 490 !isAndroid) { 491 std::string crtbegin = ToolChain.getCompilerRT(Args, "crtbegin", 492 ToolChain::FT_Object); 493 if (ToolChain.getVFS().exists(crtbegin)) 494 P = crtbegin; 495 } 496 if (P.empty()) { 497 const char *crtbegin; 498 if (Args.hasArg(options::OPT_shared)) 499 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o"; 500 else if (IsStatic) 501 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o"; 502 else if (IsPIE || IsStaticPIE) 503 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o"; 504 else 505 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o"; 506 P = ToolChain.GetFilePath(crtbegin); 507 } 508 CmdArgs.push_back(Args.MakeArgString(P)); 509 } 510 511 // Add crtfastmath.o if available and fast math is enabled. 512 ToolChain.addFastMathRuntimeIfAvailable(Args, CmdArgs); 513 514 if (isAndroid && Args.hasFlag(options::OPT_fandroid_pad_segment, 515 options::OPT_fno_android_pad_segment, false)) 516 CmdArgs.push_back( 517 Args.MakeArgString(ToolChain.GetFilePath("crt_pad_segment.o"))); 518 } 519 520 Args.addAllArgs(CmdArgs, {options::OPT_L, options::OPT_u}); 521 522 ToolChain.AddFilePathLibArgs(Args, CmdArgs); 523 524 if (D.isUsingLTO()) { 525 assert(!Inputs.empty() && "Must have at least one input."); 526 // Find the first filename InputInfo object. 527 auto Input = llvm::find_if( 528 Inputs, [](const InputInfo &II) -> bool { return II.isFilename(); }); 529 if (Input == Inputs.end()) 530 // For a very rare case, all of the inputs to the linker are 531 // InputArg. If that happens, just use the first InputInfo. 532 Input = Inputs.begin(); 533 534 addLTOOptions(ToolChain, Args, CmdArgs, Output, *Input, 535 D.getLTOMode() == LTOK_Thin); 536 } 537 538 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle)) 539 CmdArgs.push_back("--no-demangle"); 540 541 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs); 542 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs); 543 addLinkerCompressDebugSectionsOption(ToolChain, Args, CmdArgs); 544 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA); 545 546 addHIPRuntimeLibArgs(ToolChain, C, Args, CmdArgs); 547 548 // The profile runtime also needs access to system libraries. 549 getToolChain().addProfileRTLibs(Args, CmdArgs); 550 551 if (D.CCCIsCXX() && 552 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs, 553 options::OPT_r)) { 554 if (ToolChain.ShouldLinkCXXStdlib(Args)) { 555 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) && 556 !Args.hasArg(options::OPT_static); 557 if (OnlyLibstdcxxStatic) 558 CmdArgs.push_back("-Bstatic"); 559 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs); 560 if (OnlyLibstdcxxStatic) 561 CmdArgs.push_back("-Bdynamic"); 562 } 563 CmdArgs.push_back("-lm"); 564 } 565 566 // Silence warnings when linking C code with a C++ '-stdlib' argument. 567 Args.ClaimAllArgs(options::OPT_stdlib_EQ); 568 569 // Additional linker set-up and flags for Fortran. This is required in order 570 // to generate executables. As Fortran runtime depends on the C runtime, 571 // these dependencies need to be listed before the C runtime below (i.e. 572 // AddRunTimeLibs). 573 if (D.IsFlangMode() && 574 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) { 575 addFortranRuntimeLibraryPath(ToolChain, Args, CmdArgs); 576 addFortranRuntimeLibs(ToolChain, Args, CmdArgs); 577 CmdArgs.push_back("-lm"); 578 } 579 580 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_r)) { 581 if (!Args.hasArg(options::OPT_nodefaultlibs)) { 582 if (IsStatic || IsStaticPIE) 583 CmdArgs.push_back("--start-group"); 584 585 if (NeedsSanitizerDeps) 586 linkSanitizerRuntimeDeps(ToolChain, Args, CmdArgs); 587 588 if (NeedsXRayDeps) 589 linkXRayRuntimeDeps(ToolChain, Args, CmdArgs); 590 591 bool WantPthread = Args.hasArg(options::OPT_pthread) || 592 Args.hasArg(options::OPT_pthreads); 593 594 // Use the static OpenMP runtime with -static-openmp 595 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) && 596 !Args.hasArg(options::OPT_static); 597 598 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that 599 // require librt. Most modern Linux platforms do, but some may not. 600 if (addOpenMPRuntime(C, CmdArgs, ToolChain, Args, StaticOpenMP, 601 JA.isHostOffloading(Action::OFK_OpenMP), 602 /* GompNeedsRT= */ true)) 603 // OpenMP runtimes implies pthreads when using the GNU toolchain. 604 // FIXME: Does this really make sense for all GNU toolchains? 605 WantPthread = true; 606 607 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 608 609 // LLVM support for atomics on 32-bit SPARC V8+ is incomplete, so 610 // forcibly link with libatomic as a workaround. 611 // TODO: Issue #41880 and D118021. 612 if (getToolChain().getTriple().getArch() == llvm::Triple::sparc) { 613 CmdArgs.push_back("--push-state"); 614 CmdArgs.push_back("--as-needed"); 615 CmdArgs.push_back("-latomic"); 616 CmdArgs.push_back("--pop-state"); 617 } 618 619 // We don't need libpthread neither for bionic (Android) nor for musl, 620 // (used by OHOS as runtime library). 621 if (WantPthread && !isAndroid && !isOHOSFamily) 622 CmdArgs.push_back("-lpthread"); 623 624 if (Args.hasArg(options::OPT_fsplit_stack)) 625 CmdArgs.push_back("--wrap=pthread_create"); 626 627 if (!Args.hasArg(options::OPT_nolibc)) 628 CmdArgs.push_back("-lc"); 629 630 // Add IAMCU specific libs, if needed. 631 if (IsIAMCU) 632 CmdArgs.push_back("-lgloss"); 633 634 if (IsStatic || IsStaticPIE) 635 CmdArgs.push_back("--end-group"); 636 else 637 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 638 639 // Add IAMCU specific libs (outside the group), if needed. 640 if (IsIAMCU) { 641 CmdArgs.push_back("--as-needed"); 642 CmdArgs.push_back("-lsoftfp"); 643 CmdArgs.push_back("--no-as-needed"); 644 } 645 } 646 647 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) { 648 if (HasCRTBeginEndFiles) { 649 std::string P; 650 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT && 651 !isAndroid) { 652 std::string crtend = ToolChain.getCompilerRT(Args, "crtend", 653 ToolChain::FT_Object); 654 if (ToolChain.getVFS().exists(crtend)) 655 P = crtend; 656 } 657 if (P.empty()) { 658 const char *crtend; 659 if (Args.hasArg(options::OPT_shared)) 660 crtend = isAndroid ? "crtend_so.o" : "crtendS.o"; 661 else if (IsPIE || IsStaticPIE) 662 crtend = isAndroid ? "crtend_android.o" : "crtendS.o"; 663 else 664 crtend = isAndroid ? "crtend_android.o" : "crtend.o"; 665 P = ToolChain.GetFilePath(crtend); 666 } 667 CmdArgs.push_back(Args.MakeArgString(P)); 668 } 669 if (!isAndroid) 670 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o"))); 671 } 672 } 673 674 Args.addAllArgs(CmdArgs, {options::OPT_T, options::OPT_t}); 675 676 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath()); 677 C.addCommand(std::make_unique<Command>(JA, *this, 678 ResponseFileSupport::AtFileCurCP(), 679 Exec, CmdArgs, Inputs, Output)); 680 } 681 682 void tools::gnutools::Assembler::ConstructJob(Compilation &C, 683 const JobAction &JA, 684 const InputInfo &Output, 685 const InputInfoList &Inputs, 686 const ArgList &Args, 687 const char *LinkingOutput) const { 688 const auto &D = getToolChain().getDriver(); 689 690 claimNoWarnArgs(Args); 691 692 ArgStringList CmdArgs; 693 694 llvm::Reloc::Model RelocationModel; 695 unsigned PICLevel; 696 bool IsPIE; 697 const char *DefaultAssembler = "as"; 698 // Enforce GNU as on Solaris; the native assembler's input syntax isn't fully 699 // compatible. 700 if (getToolChain().getTriple().isOSSolaris()) 701 DefaultAssembler = "gas"; 702 std::tie(RelocationModel, PICLevel, IsPIE) = 703 ParsePICArgs(getToolChain(), Args); 704 705 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) { 706 if (A->getOption().getID() == options::OPT_gz) { 707 CmdArgs.push_back("--compress-debug-sections"); 708 } else { 709 StringRef Value = A->getValue(); 710 if (Value == "none" || Value == "zlib" || Value == "zstd") { 711 CmdArgs.push_back( 712 Args.MakeArgString("--compress-debug-sections=" + Twine(Value))); 713 } else { 714 D.Diag(diag::err_drv_unsupported_option_argument) 715 << A->getSpelling() << Value; 716 } 717 } 718 } 719 720 switch (getToolChain().getArch()) { 721 default: 722 break; 723 // Add --32/--64 to make sure we get the format we want. 724 // This is incomplete 725 case llvm::Triple::x86: 726 CmdArgs.push_back("--32"); 727 break; 728 case llvm::Triple::x86_64: 729 if (getToolChain().getTriple().isX32()) 730 CmdArgs.push_back("--x32"); 731 else 732 CmdArgs.push_back("--64"); 733 break; 734 case llvm::Triple::ppc: { 735 CmdArgs.push_back("-a32"); 736 CmdArgs.push_back("-mppc"); 737 CmdArgs.push_back("-mbig-endian"); 738 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 739 getCPUName(D, Args, getToolChain().getTriple()))); 740 break; 741 } 742 case llvm::Triple::ppcle: { 743 CmdArgs.push_back("-a32"); 744 CmdArgs.push_back("-mppc"); 745 CmdArgs.push_back("-mlittle-endian"); 746 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 747 getCPUName(D, Args, getToolChain().getTriple()))); 748 break; 749 } 750 case llvm::Triple::ppc64: { 751 CmdArgs.push_back("-a64"); 752 CmdArgs.push_back("-mppc64"); 753 CmdArgs.push_back("-mbig-endian"); 754 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 755 getCPUName(D, Args, getToolChain().getTriple()))); 756 break; 757 } 758 case llvm::Triple::ppc64le: { 759 CmdArgs.push_back("-a64"); 760 CmdArgs.push_back("-mppc64"); 761 CmdArgs.push_back("-mlittle-endian"); 762 CmdArgs.push_back(ppc::getPPCAsmModeForCPU( 763 getCPUName(D, Args, getToolChain().getTriple()))); 764 break; 765 } 766 case llvm::Triple::riscv32: 767 case llvm::Triple::riscv64: { 768 StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple()); 769 CmdArgs.push_back("-mabi"); 770 CmdArgs.push_back(ABIName.data()); 771 std::string MArchName = 772 riscv::getRISCVArch(Args, getToolChain().getTriple()); 773 CmdArgs.push_back("-march"); 774 CmdArgs.push_back(Args.MakeArgString(MArchName)); 775 if (!Args.hasFlag(options::OPT_mrelax, options::OPT_mno_relax, true)) 776 Args.addOptOutFlag(CmdArgs, options::OPT_mrelax, options::OPT_mno_relax); 777 break; 778 } 779 case llvm::Triple::sparc: 780 case llvm::Triple::sparcel: { 781 CmdArgs.push_back("-32"); 782 std::string CPU = getCPUName(D, Args, getToolChain().getTriple()); 783 CmdArgs.push_back( 784 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 785 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 786 break; 787 } 788 case llvm::Triple::sparcv9: { 789 CmdArgs.push_back("-64"); 790 std::string CPU = getCPUName(D, Args, getToolChain().getTriple()); 791 CmdArgs.push_back( 792 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 793 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 794 break; 795 } 796 case llvm::Triple::arm: 797 case llvm::Triple::armeb: 798 case llvm::Triple::thumb: 799 case llvm::Triple::thumbeb: { 800 const llvm::Triple &Triple2 = getToolChain().getTriple(); 801 CmdArgs.push_back(arm::isARMBigEndian(Triple2, Args) ? "-EB" : "-EL"); 802 switch (Triple2.getSubArch()) { 803 case llvm::Triple::ARMSubArch_v7: 804 CmdArgs.push_back("-mfpu=neon"); 805 break; 806 case llvm::Triple::ARMSubArch_v8: 807 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8"); 808 break; 809 default: 810 break; 811 } 812 813 switch (arm::getARMFloatABI(getToolChain(), Args)) { 814 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!"); 815 case arm::FloatABI::Soft: 816 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft")); 817 break; 818 case arm::FloatABI::SoftFP: 819 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp")); 820 break; 821 case arm::FloatABI::Hard: 822 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard")); 823 break; 824 } 825 826 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 827 normalizeCPUNamesForAssembler(Args, CmdArgs); 828 829 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ); 830 // The integrated assembler doesn't implement e_flags setting behavior for 831 // -meabi=gnu (gcc -mabi={apcs-gnu,atpcs} passes -meabi=gnu to gas). For 832 // compatibility we accept but warn. 833 if (Arg *A = Args.getLastArgNoClaim(options::OPT_mabi_EQ)) 834 A->ignoreTargetSpecific(); 835 break; 836 } 837 case llvm::Triple::aarch64: 838 case llvm::Triple::aarch64_be: { 839 CmdArgs.push_back( 840 getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL"); 841 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 842 normalizeCPUNamesForAssembler(Args, CmdArgs); 843 844 break; 845 } 846 // TODO: handle loongarch32. 847 case llvm::Triple::loongarch64: { 848 StringRef ABIName = 849 loongarch::getLoongArchABI(D, Args, getToolChain().getTriple()); 850 CmdArgs.push_back(Args.MakeArgString("-mabi=" + ABIName)); 851 break; 852 } 853 case llvm::Triple::mips: 854 case llvm::Triple::mipsel: 855 case llvm::Triple::mips64: 856 case llvm::Triple::mips64el: { 857 StringRef CPUName; 858 StringRef ABIName; 859 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName); 860 ABIName = mips::getGnuCompatibleMipsABIName(ABIName); 861 862 CmdArgs.push_back("-march"); 863 CmdArgs.push_back(CPUName.data()); 864 865 CmdArgs.push_back("-mabi"); 866 CmdArgs.push_back(ABIName.data()); 867 868 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE, 869 // or -mshared (not implemented) is in effect. 870 if (RelocationModel == llvm::Reloc::Static) 871 CmdArgs.push_back("-mno-shared"); 872 873 // LLVM doesn't support -mplt yet and acts as if it is always given. 874 // However, -mplt has no effect with the N64 ABI. 875 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls)) 876 CmdArgs.push_back("-call_nonpic"); 877 878 if (getToolChain().getTriple().isLittleEndian()) 879 CmdArgs.push_back("-EL"); 880 else 881 CmdArgs.push_back("-EB"); 882 883 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) { 884 if (StringRef(A->getValue()) == "2008") 885 CmdArgs.push_back(Args.MakeArgString("-mnan=2008")); 886 } 887 888 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default. 889 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx, 890 options::OPT_mfp64)) { 891 A->claim(); 892 A->render(Args, CmdArgs); 893 } else if (mips::shouldUseFPXX( 894 Args, getToolChain().getTriple(), CPUName, ABIName, 895 mips::getMipsFloatABI(getToolChain().getDriver(), Args, 896 getToolChain().getTriple()))) 897 CmdArgs.push_back("-mfpxx"); 898 899 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of 900 // -mno-mips16 is actually -no-mips16. 901 if (Arg *A = 902 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) { 903 if (A->getOption().matches(options::OPT_mips16)) { 904 A->claim(); 905 A->render(Args, CmdArgs); 906 } else { 907 A->claim(); 908 CmdArgs.push_back("-no-mips16"); 909 } 910 } 911 912 Args.AddLastArg(CmdArgs, options::OPT_mmicromips, 913 options::OPT_mno_micromips); 914 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp); 915 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2); 916 917 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) { 918 // Do not use AddLastArg because not all versions of MIPS assembler 919 // support -mmsa / -mno-msa options. 920 if (A->getOption().matches(options::OPT_mmsa)) 921 CmdArgs.push_back(Args.MakeArgString("-mmsa")); 922 } 923 924 Args.AddLastArg(CmdArgs, options::OPT_mhard_float, 925 options::OPT_msoft_float); 926 927 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float, 928 options::OPT_msingle_float); 929 930 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg, 931 options::OPT_mno_odd_spreg); 932 933 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 934 break; 935 } 936 case llvm::Triple::systemz: { 937 // Always pass an -march option, since our default of z10 is later 938 // than the GNU assembler's default. 939 std::string CPUName = 940 systemz::getSystemZTargetCPU(Args, getToolChain().getTriple()); 941 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName)); 942 break; 943 } 944 case llvm::Triple::ve: 945 DefaultAssembler = "nas"; 946 } 947 948 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ, 949 options::OPT_fdebug_prefix_map_EQ)) { 950 StringRef Map = A->getValue(); 951 if (!Map.contains('=')) 952 D.Diag(diag::err_drv_invalid_argument_to_option) 953 << Map << A->getOption().getName(); 954 else { 955 CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map")); 956 CmdArgs.push_back(Args.MakeArgString(Map)); 957 } 958 A->claim(); 959 } 960 961 Args.AddAllArgs(CmdArgs, options::OPT_I); 962 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 963 964 CmdArgs.push_back("-o"); 965 CmdArgs.push_back(Output.getFilename()); 966 967 for (const auto &II : Inputs) 968 CmdArgs.push_back(II.getFilename()); 969 970 if (Arg *A = Args.getLastArg(options::OPT_g_Flag, options::OPT_gN_Group, 971 options::OPT_gdwarf_2, options::OPT_gdwarf_3, 972 options::OPT_gdwarf_4, options::OPT_gdwarf_5, 973 options::OPT_gdwarf)) 974 if (!A->getOption().matches(options::OPT_g0)) { 975 Args.AddLastArg(CmdArgs, options::OPT_g_Flag); 976 977 unsigned DwarfVersion = getDwarfVersion(getToolChain(), Args); 978 CmdArgs.push_back(Args.MakeArgString("-gdwarf-" + Twine(DwarfVersion))); 979 } 980 981 const char *Exec = 982 Args.MakeArgString(getToolChain().GetProgramPath(DefaultAssembler)); 983 C.addCommand(std::make_unique<Command>(JA, *this, 984 ResponseFileSupport::AtFileCurCP(), 985 Exec, CmdArgs, Inputs, Output)); 986 987 // Handle the debug info splitting at object creation time if we're 988 // creating an object. 989 // TODO: Currently only works on linux with newer objcopy. 990 if (Args.hasArg(options::OPT_gsplit_dwarf) && 991 getToolChain().getTriple().isOSLinux()) 992 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, 993 SplitDebugName(JA, Args, Inputs[0], Output)); 994 } 995 996 namespace { 997 // Filter to remove Multilibs that don't exist as a suffix to Path 998 class FilterNonExistent { 999 StringRef Base, File; 1000 llvm::vfs::FileSystem &VFS; 1001 1002 public: 1003 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS) 1004 : Base(Base), File(File), VFS(VFS) {} 1005 bool operator()(const Multilib &M) { 1006 return !VFS.exists(Base + M.gccSuffix() + File); 1007 } 1008 }; 1009 } // end anonymous namespace 1010 1011 static bool isSoftFloatABI(const ArgList &Args) { 1012 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float, 1013 options::OPT_mfloat_abi_EQ); 1014 if (!A) 1015 return false; 1016 1017 return A->getOption().matches(options::OPT_msoft_float) || 1018 (A->getOption().matches(options::OPT_mfloat_abi_EQ) && 1019 A->getValue() == StringRef("soft")); 1020 } 1021 1022 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) { 1023 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb; 1024 } 1025 1026 static bool isMipsEL(llvm::Triple::ArchType Arch) { 1027 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el; 1028 } 1029 1030 static bool isMips16(const ArgList &Args) { 1031 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16); 1032 return A && A->getOption().matches(options::OPT_mips16); 1033 } 1034 1035 static bool isMicroMips(const ArgList &Args) { 1036 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips); 1037 return A && A->getOption().matches(options::OPT_mmicromips); 1038 } 1039 1040 static bool isMSP430(llvm::Triple::ArchType Arch) { 1041 return Arch == llvm::Triple::msp430; 1042 } 1043 1044 static bool findMipsCsMultilibs(const Driver &D, 1045 const Multilib::flags_list &Flags, 1046 FilterNonExistent &NonExistent, 1047 DetectedMultilibs &Result) { 1048 // Check for Code Sourcery toolchain multilibs 1049 MultilibSet CSMipsMultilibs; 1050 { 1051 auto MArchMips16 = MultilibBuilder("/mips16").flag("-m32").flag("-mips16"); 1052 1053 auto MArchMicroMips = 1054 MultilibBuilder("/micromips").flag("-m32").flag("-mmicromips"); 1055 1056 auto MArchDefault = MultilibBuilder("") 1057 .flag("-mips16", /*Disallow=*/true) 1058 .flag("-mmicromips", /*Disallow=*/true); 1059 1060 auto UCLibc = MultilibBuilder("/uclibc").flag("-muclibc"); 1061 1062 auto SoftFloat = MultilibBuilder("/soft-float").flag("-msoft-float"); 1063 1064 auto Nan2008 = MultilibBuilder("/nan2008").flag("-mnan=2008"); 1065 1066 auto DefaultFloat = MultilibBuilder("") 1067 .flag("-msoft-float", /*Disallow=*/true) 1068 .flag("-mnan=2008", /*Disallow=*/true); 1069 1070 auto BigEndian = 1071 MultilibBuilder("").flag("-EB").flag("-EL", /*Disallow=*/true); 1072 1073 auto LittleEndian = 1074 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true); 1075 1076 // Note that this one's osSuffix is "" 1077 auto MAbi64 = MultilibBuilder("") 1078 .gccSuffix("/64") 1079 .includeSuffix("/64") 1080 .flag("-mabi=n64") 1081 .flag("-mabi=n32", /*Disallow=*/true) 1082 .flag("-m32", /*Disallow=*/true); 1083 1084 CSMipsMultilibs = 1085 MultilibSetBuilder() 1086 .Either(MArchMips16, MArchMicroMips, MArchDefault) 1087 .Maybe(UCLibc) 1088 .Either(SoftFloat, Nan2008, DefaultFloat) 1089 .FilterOut("/micromips/nan2008") 1090 .FilterOut("/mips16/nan2008") 1091 .Either(BigEndian, LittleEndian) 1092 .Maybe(MAbi64) 1093 .FilterOut("/mips16.*/64") 1094 .FilterOut("/micromips.*/64") 1095 .makeMultilibSet() 1096 .FilterOut(NonExistent) 1097 .setIncludeDirsCallback([](const Multilib &M) { 1098 std::vector<std::string> Dirs({"/include"}); 1099 if (StringRef(M.includeSuffix()).starts_with("/uclibc")) 1100 Dirs.push_back( 1101 "/../../../../mips-linux-gnu/libc/uclibc/usr/include"); 1102 else 1103 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include"); 1104 return Dirs; 1105 }); 1106 } 1107 1108 MultilibSet DebianMipsMultilibs; 1109 { 1110 MultilibBuilder MAbiN32 = 1111 MultilibBuilder().gccSuffix("/n32").includeSuffix("/n32").flag( 1112 "-mabi=n32"); 1113 1114 MultilibBuilder M64 = MultilibBuilder() 1115 .gccSuffix("/64") 1116 .includeSuffix("/64") 1117 .flag("-m64") 1118 .flag("-m32", /*Disallow=*/true) 1119 .flag("-mabi=n32", /*Disallow=*/true); 1120 1121 MultilibBuilder M32 = MultilibBuilder() 1122 .gccSuffix("/32") 1123 .flag("-m64", /*Disallow=*/true) 1124 .flag("-m32") 1125 .flag("-mabi=n32", /*Disallow=*/true); 1126 1127 DebianMipsMultilibs = MultilibSetBuilder() 1128 .Either(M32, M64, MAbiN32) 1129 .makeMultilibSet() 1130 .FilterOut(NonExistent); 1131 } 1132 1133 // Sort candidates. Toolchain that best meets the directories tree goes first. 1134 // Then select the first toolchains matches command line flags. 1135 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs}; 1136 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size()) 1137 std::iter_swap(Candidates, Candidates + 1); 1138 for (const MultilibSet *Candidate : Candidates) { 1139 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) { 1140 if (Candidate == &DebianMipsMultilibs) 1141 Result.BiarchSibling = Multilib(); 1142 Result.Multilibs = *Candidate; 1143 return true; 1144 } 1145 } 1146 return false; 1147 } 1148 1149 static bool findMipsMuslMultilibs(const Driver &D, 1150 const Multilib::flags_list &Flags, 1151 FilterNonExistent &NonExistent, 1152 DetectedMultilibs &Result) { 1153 // Musl toolchain multilibs 1154 MultilibSet MuslMipsMultilibs; 1155 { 1156 auto MArchMipsR2 = MultilibBuilder("") 1157 .osSuffix("/mips-r2-hard-musl") 1158 .flag("-EB") 1159 .flag("-EL", /*Disallow=*/true) 1160 .flag("-march=mips32r2"); 1161 1162 auto MArchMipselR2 = MultilibBuilder("/mipsel-r2-hard-musl") 1163 .flag("-EB", /*Disallow=*/true) 1164 .flag("-EL") 1165 .flag("-march=mips32r2"); 1166 1167 MuslMipsMultilibs = MultilibSetBuilder() 1168 .Either(MArchMipsR2, MArchMipselR2) 1169 .makeMultilibSet(); 1170 1171 // Specify the callback that computes the include directories. 1172 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) { 1173 return std::vector<std::string>( 1174 {"/../sysroot" + M.osSuffix() + "/usr/include"}); 1175 }); 1176 } 1177 if (MuslMipsMultilibs.select(D, Flags, Result.SelectedMultilibs)) { 1178 Result.Multilibs = MuslMipsMultilibs; 1179 return true; 1180 } 1181 return false; 1182 } 1183 1184 static bool findMipsMtiMultilibs(const Driver &D, 1185 const Multilib::flags_list &Flags, 1186 FilterNonExistent &NonExistent, 1187 DetectedMultilibs &Result) { 1188 // CodeScape MTI toolchain v1.2 and early. 1189 MultilibSet MtiMipsMultilibsV1; 1190 { 1191 auto MArchMips32 = MultilibBuilder("/mips32") 1192 .flag("-m32") 1193 .flag("-m64", /*Disallow=*/true) 1194 .flag("-mmicromips", /*Disallow=*/true) 1195 .flag("-march=mips32"); 1196 1197 auto MArchMicroMips = MultilibBuilder("/micromips") 1198 .flag("-m32") 1199 .flag("-m64", /*Disallow=*/true) 1200 .flag("-mmicromips"); 1201 1202 auto MArchMips64r2 = MultilibBuilder("/mips64r2") 1203 .flag("-m32", /*Disallow=*/true) 1204 .flag("-m64") 1205 .flag("-march=mips64r2"); 1206 1207 auto MArchMips64 = MultilibBuilder("/mips64") 1208 .flag("-m32", /*Disallow=*/true) 1209 .flag("-m64") 1210 .flag("-march=mips64r2", /*Disallow=*/true); 1211 1212 auto MArchDefault = MultilibBuilder("") 1213 .flag("-m32") 1214 .flag("-m64", /*Disallow=*/true) 1215 .flag("-mmicromips", /*Disallow=*/true) 1216 .flag("-march=mips32r2"); 1217 1218 auto Mips16 = MultilibBuilder("/mips16").flag("-mips16"); 1219 1220 auto UCLibc = MultilibBuilder("/uclibc").flag("-muclibc"); 1221 1222 auto MAbi64 = MultilibBuilder("/64") 1223 .flag("-mabi=n64") 1224 .flag("-mabi=n32", /*Disallow=*/true) 1225 .flag("-m32", /*Disallow=*/true); 1226 1227 auto BigEndian = 1228 MultilibBuilder("").flag("-EB").flag("-EL", /*Disallow=*/true); 1229 1230 auto LittleEndian = 1231 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true); 1232 1233 auto SoftFloat = MultilibBuilder("/sof").flag("-msoft-float"); 1234 1235 auto Nan2008 = MultilibBuilder("/nan2008").flag("-mnan=2008"); 1236 1237 MtiMipsMultilibsV1 = 1238 MultilibSetBuilder() 1239 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64, 1240 MArchDefault) 1241 .Maybe(UCLibc) 1242 .Maybe(Mips16) 1243 .FilterOut("/mips64/mips16") 1244 .FilterOut("/mips64r2/mips16") 1245 .FilterOut("/micromips/mips16") 1246 .Maybe(MAbi64) 1247 .FilterOut("/micromips/64") 1248 .FilterOut("/mips32/64") 1249 .FilterOut("^/64") 1250 .FilterOut("/mips16/64") 1251 .Either(BigEndian, LittleEndian) 1252 .Maybe(SoftFloat) 1253 .Maybe(Nan2008) 1254 .FilterOut(".*sof/nan2008") 1255 .makeMultilibSet() 1256 .FilterOut(NonExistent) 1257 .setIncludeDirsCallback([](const Multilib &M) { 1258 std::vector<std::string> Dirs({"/include"}); 1259 if (StringRef(M.includeSuffix()).starts_with("/uclibc")) 1260 Dirs.push_back("/../../../../sysroot/uclibc/usr/include"); 1261 else 1262 Dirs.push_back("/../../../../sysroot/usr/include"); 1263 return Dirs; 1264 }); 1265 } 1266 1267 // CodeScape IMG toolchain starting from v1.3. 1268 MultilibSet MtiMipsMultilibsV2; 1269 { 1270 auto BeHard = MultilibBuilder("/mips-r2-hard") 1271 .flag("-EB") 1272 .flag("-msoft-float", /*Disallow=*/true) 1273 .flag("-mnan=2008", /*Disallow=*/true) 1274 .flag("-muclibc", /*Disallow=*/true); 1275 auto BeSoft = MultilibBuilder("/mips-r2-soft") 1276 .flag("-EB") 1277 .flag("-msoft-float") 1278 .flag("-mnan=2008", /*Disallow=*/true); 1279 auto ElHard = MultilibBuilder("/mipsel-r2-hard") 1280 .flag("-EL") 1281 .flag("-msoft-float", /*Disallow=*/true) 1282 .flag("-mnan=2008", /*Disallow=*/true) 1283 .flag("-muclibc", /*Disallow=*/true); 1284 auto ElSoft = MultilibBuilder("/mipsel-r2-soft") 1285 .flag("-EL") 1286 .flag("-msoft-float") 1287 .flag("-mnan=2008", /*Disallow=*/true) 1288 .flag("-mmicromips", /*Disallow=*/true); 1289 auto BeHardNan = MultilibBuilder("/mips-r2-hard-nan2008") 1290 .flag("-EB") 1291 .flag("-msoft-float", /*Disallow=*/true) 1292 .flag("-mnan=2008") 1293 .flag("-muclibc", /*Disallow=*/true); 1294 auto ElHardNan = MultilibBuilder("/mipsel-r2-hard-nan2008") 1295 .flag("-EL") 1296 .flag("-msoft-float", /*Disallow=*/true) 1297 .flag("-mnan=2008") 1298 .flag("-muclibc", /*Disallow=*/true) 1299 .flag("-mmicromips", /*Disallow=*/true); 1300 auto BeHardNanUclibc = MultilibBuilder("/mips-r2-hard-nan2008-uclibc") 1301 .flag("-EB") 1302 .flag("-msoft-float", /*Disallow=*/true) 1303 .flag("-mnan=2008") 1304 .flag("-muclibc"); 1305 auto ElHardNanUclibc = MultilibBuilder("/mipsel-r2-hard-nan2008-uclibc") 1306 .flag("-EL") 1307 .flag("-msoft-float", /*Disallow=*/true) 1308 .flag("-mnan=2008") 1309 .flag("-muclibc"); 1310 auto BeHardUclibc = MultilibBuilder("/mips-r2-hard-uclibc") 1311 .flag("-EB") 1312 .flag("-msoft-float", /*Disallow=*/true) 1313 .flag("-mnan=2008", /*Disallow=*/true) 1314 .flag("-muclibc"); 1315 auto ElHardUclibc = MultilibBuilder("/mipsel-r2-hard-uclibc") 1316 .flag("-EL") 1317 .flag("-msoft-float", /*Disallow=*/true) 1318 .flag("-mnan=2008", /*Disallow=*/true) 1319 .flag("-muclibc"); 1320 auto ElMicroHardNan = MultilibBuilder("/micromipsel-r2-hard-nan2008") 1321 .flag("-EL") 1322 .flag("-msoft-float", /*Disallow=*/true) 1323 .flag("-mnan=2008") 1324 .flag("-mmicromips"); 1325 auto ElMicroSoft = MultilibBuilder("/micromipsel-r2-soft") 1326 .flag("-EL") 1327 .flag("-msoft-float") 1328 .flag("-mnan=2008", /*Disallow=*/true) 1329 .flag("-mmicromips"); 1330 1331 auto O32 = MultilibBuilder("/lib") 1332 .osSuffix("") 1333 .flag("-mabi=n32", /*Disallow=*/true) 1334 .flag("-mabi=n64", /*Disallow=*/true); 1335 auto N32 = MultilibBuilder("/lib32") 1336 .osSuffix("") 1337 .flag("-mabi=n32") 1338 .flag("-mabi=n64", /*Disallow=*/true); 1339 auto N64 = MultilibBuilder("/lib64") 1340 .osSuffix("") 1341 .flag("-mabi=n32", /*Disallow=*/true) 1342 .flag("-mabi=n64"); 1343 1344 MtiMipsMultilibsV2 = 1345 MultilibSetBuilder() 1346 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan, 1347 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc, 1348 ElHardUclibc, ElMicroHardNan, ElMicroSoft}) 1349 .Either(O32, N32, N64) 1350 .makeMultilibSet() 1351 .FilterOut(NonExistent) 1352 .setIncludeDirsCallback([](const Multilib &M) { 1353 return std::vector<std::string>({"/../../../../sysroot" + 1354 M.includeSuffix() + 1355 "/../usr/include"}); 1356 }) 1357 .setFilePathsCallback([](const Multilib &M) { 1358 return std::vector<std::string>( 1359 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()}); 1360 }); 1361 } 1362 for (auto *Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) { 1363 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) { 1364 Result.Multilibs = *Candidate; 1365 return true; 1366 } 1367 } 1368 return false; 1369 } 1370 1371 static bool findMipsImgMultilibs(const Driver &D, 1372 const Multilib::flags_list &Flags, 1373 FilterNonExistent &NonExistent, 1374 DetectedMultilibs &Result) { 1375 // CodeScape IMG toolchain v1.2 and early. 1376 MultilibSet ImgMultilibsV1; 1377 { 1378 auto Mips64r6 = MultilibBuilder("/mips64r6") 1379 .flag("-m64") 1380 .flag("-m32", /*Disallow=*/true); 1381 1382 auto LittleEndian = 1383 MultilibBuilder("/el").flag("-EL").flag("-EB", /*Disallow=*/true); 1384 1385 auto MAbi64 = MultilibBuilder("/64") 1386 .flag("-mabi=n64") 1387 .flag("-mabi=n32", /*Disallow=*/true) 1388 .flag("-m32", /*Disallow=*/true); 1389 1390 ImgMultilibsV1 = 1391 MultilibSetBuilder() 1392 .Maybe(Mips64r6) 1393 .Maybe(MAbi64) 1394 .Maybe(LittleEndian) 1395 .makeMultilibSet() 1396 .FilterOut(NonExistent) 1397 .setIncludeDirsCallback([](const Multilib &M) { 1398 return std::vector<std::string>( 1399 {"/include", "/../../../../sysroot/usr/include"}); 1400 }); 1401 } 1402 1403 // CodeScape IMG toolchain starting from v1.3. 1404 MultilibSet ImgMultilibsV2; 1405 { 1406 auto BeHard = MultilibBuilder("/mips-r6-hard") 1407 .flag("-EB") 1408 .flag("-msoft-float", /*Disallow=*/true) 1409 .flag("-mmicromips", /*Disallow=*/true); 1410 auto BeSoft = MultilibBuilder("/mips-r6-soft") 1411 .flag("-EB") 1412 .flag("-msoft-float") 1413 .flag("-mmicromips", /*Disallow=*/true); 1414 auto ElHard = MultilibBuilder("/mipsel-r6-hard") 1415 .flag("-EL") 1416 .flag("-msoft-float", /*Disallow=*/true) 1417 .flag("-mmicromips", /*Disallow=*/true); 1418 auto ElSoft = MultilibBuilder("/mipsel-r6-soft") 1419 .flag("-EL") 1420 .flag("-msoft-float") 1421 .flag("-mmicromips", /*Disallow=*/true); 1422 auto BeMicroHard = MultilibBuilder("/micromips-r6-hard") 1423 .flag("-EB") 1424 .flag("-msoft-float", /*Disallow=*/true) 1425 .flag("-mmicromips"); 1426 auto BeMicroSoft = MultilibBuilder("/micromips-r6-soft") 1427 .flag("-EB") 1428 .flag("-msoft-float") 1429 .flag("-mmicromips"); 1430 auto ElMicroHard = MultilibBuilder("/micromipsel-r6-hard") 1431 .flag("-EL") 1432 .flag("-msoft-float", /*Disallow=*/true) 1433 .flag("-mmicromips"); 1434 auto ElMicroSoft = MultilibBuilder("/micromipsel-r6-soft") 1435 .flag("-EL") 1436 .flag("-msoft-float") 1437 .flag("-mmicromips"); 1438 1439 auto O32 = MultilibBuilder("/lib") 1440 .osSuffix("") 1441 .flag("-mabi=n32", /*Disallow=*/true) 1442 .flag("-mabi=n64", /*Disallow=*/true); 1443 auto N32 = MultilibBuilder("/lib32") 1444 .osSuffix("") 1445 .flag("-mabi=n32") 1446 .flag("-mabi=n64", /*Disallow=*/true); 1447 auto N64 = MultilibBuilder("/lib64") 1448 .osSuffix("") 1449 .flag("-mabi=n32", /*Disallow=*/true) 1450 .flag("-mabi=n64"); 1451 1452 ImgMultilibsV2 = 1453 MultilibSetBuilder() 1454 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft, 1455 ElMicroHard, ElMicroSoft}) 1456 .Either(O32, N32, N64) 1457 .makeMultilibSet() 1458 .FilterOut(NonExistent) 1459 .setIncludeDirsCallback([](const Multilib &M) { 1460 return std::vector<std::string>({"/../../../../sysroot" + 1461 M.includeSuffix() + 1462 "/../usr/include"}); 1463 }) 1464 .setFilePathsCallback([](const Multilib &M) { 1465 return std::vector<std::string>( 1466 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()}); 1467 }); 1468 } 1469 for (auto *Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) { 1470 if (Candidate->select(D, Flags, Result.SelectedMultilibs)) { 1471 Result.Multilibs = *Candidate; 1472 return true; 1473 } 1474 } 1475 return false; 1476 } 1477 1478 bool clang::driver::findMIPSMultilibs(const Driver &D, 1479 const llvm::Triple &TargetTriple, 1480 StringRef Path, const ArgList &Args, 1481 DetectedMultilibs &Result) { 1482 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1483 1484 StringRef CPUName; 1485 StringRef ABIName; 1486 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName); 1487 1488 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 1489 1490 Multilib::flags_list Flags; 1491 addMultilibFlag(TargetTriple.isMIPS32(), "-m32", Flags); 1492 addMultilibFlag(TargetTriple.isMIPS64(), "-m64", Flags); 1493 addMultilibFlag(isMips16(Args), "-mips16", Flags); 1494 addMultilibFlag(CPUName == "mips32", "-march=mips32", Flags); 1495 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" || 1496 CPUName == "mips32r5" || CPUName == "p5600", 1497 "-march=mips32r2", Flags); 1498 addMultilibFlag(CPUName == "mips32r6", "-march=mips32r6", Flags); 1499 addMultilibFlag(CPUName == "mips64", "-march=mips64", Flags); 1500 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" || 1501 CPUName == "mips64r5" || CPUName == "octeon" || 1502 CPUName == "octeon+", 1503 "-march=mips64r2", Flags); 1504 addMultilibFlag(CPUName == "mips64r6", "-march=mips64r6", Flags); 1505 addMultilibFlag(isMicroMips(Args), "-mmicromips", Flags); 1506 addMultilibFlag(tools::mips::isUCLibc(Args), "-muclibc", Flags); 1507 addMultilibFlag(tools::mips::isNaN2008(D, Args, TargetTriple), "-mnan=2008", 1508 Flags); 1509 addMultilibFlag(ABIName == "n32", "-mabi=n32", Flags); 1510 addMultilibFlag(ABIName == "n64", "-mabi=n64", Flags); 1511 addMultilibFlag(isSoftFloatABI(Args), "-msoft-float", Flags); 1512 addMultilibFlag(!isSoftFloatABI(Args), "-mhard-float", Flags); 1513 addMultilibFlag(isMipsEL(TargetArch), "-EL", Flags); 1514 addMultilibFlag(!isMipsEL(TargetArch), "-EB", Flags); 1515 1516 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1517 TargetTriple.getOS() == llvm::Triple::Linux && 1518 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment) 1519 return findMipsMuslMultilibs(D, Flags, NonExistent, Result); 1520 1521 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1522 TargetTriple.getOS() == llvm::Triple::Linux && 1523 TargetTriple.isGNUEnvironment()) 1524 return findMipsMtiMultilibs(D, Flags, NonExistent, Result); 1525 1526 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies && 1527 TargetTriple.getOS() == llvm::Triple::Linux && 1528 TargetTriple.isGNUEnvironment()) 1529 return findMipsImgMultilibs(D, Flags, NonExistent, Result); 1530 1531 if (findMipsCsMultilibs(D, Flags, NonExistent, Result)) 1532 return true; 1533 1534 // Fallback to the regular toolchain-tree structure. 1535 Multilib Default; 1536 Result.Multilibs.push_back(Default); 1537 Result.Multilibs.FilterOut(NonExistent); 1538 1539 if (Result.Multilibs.select(D, Flags, Result.SelectedMultilibs)) { 1540 Result.BiarchSibling = Multilib(); 1541 return true; 1542 } 1543 1544 return false; 1545 } 1546 1547 static void findAndroidArmMultilibs(const Driver &D, 1548 const llvm::Triple &TargetTriple, 1549 StringRef Path, const ArgList &Args, 1550 DetectedMultilibs &Result) { 1551 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb. 1552 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1553 MultilibBuilder ArmV7Multilib = MultilibBuilder("/armv7-a") 1554 .flag("-march=armv7-a") 1555 .flag("-mthumb", /*Disallow=*/true); 1556 MultilibBuilder ThumbMultilib = MultilibBuilder("/thumb") 1557 .flag("-march=armv7-a", /*Disallow=*/true) 1558 .flag("-mthumb"); 1559 MultilibBuilder ArmV7ThumbMultilib = 1560 MultilibBuilder("/armv7-a/thumb").flag("-march=armv7-a").flag("-mthumb"); 1561 MultilibBuilder DefaultMultilib = 1562 MultilibBuilder("") 1563 .flag("-march=armv7-a", /*Disallow=*/true) 1564 .flag("-mthumb", /*Disallow=*/true); 1565 MultilibSet AndroidArmMultilibs = 1566 MultilibSetBuilder() 1567 .Either(ThumbMultilib, ArmV7Multilib, ArmV7ThumbMultilib, 1568 DefaultMultilib) 1569 .makeMultilibSet() 1570 .FilterOut(NonExistent); 1571 1572 Multilib::flags_list Flags; 1573 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ); 1574 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm; 1575 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb; 1576 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7; 1577 bool IsThumbMode = IsThumbArch || 1578 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) || 1579 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB); 1580 bool IsArmV7Mode = (IsArmArch || IsThumbArch) && 1581 (llvm::ARM::parseArchVersion(Arch) == 7 || 1582 (IsArmArch && Arch == "" && IsV7SubArch)); 1583 addMultilibFlag(IsArmV7Mode, "-march=armv7-a", Flags); 1584 addMultilibFlag(IsThumbMode, "-mthumb", Flags); 1585 1586 if (AndroidArmMultilibs.select(D, Flags, Result.SelectedMultilibs)) 1587 Result.Multilibs = AndroidArmMultilibs; 1588 } 1589 1590 static bool findMSP430Multilibs(const Driver &D, 1591 const llvm::Triple &TargetTriple, 1592 StringRef Path, const ArgList &Args, 1593 DetectedMultilibs &Result) { 1594 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1595 MultilibBuilder WithoutExceptions = 1596 MultilibBuilder("/430").flag("-exceptions", /*Disallow=*/true); 1597 MultilibBuilder WithExceptions = 1598 MultilibBuilder("/430/exceptions").flag("-exceptions"); 1599 1600 // FIXME: when clang starts to support msp430x ISA additional logic 1601 // to select between multilib must be implemented 1602 // MultilibBuilder MSP430xMultilib = MultilibBuilder("/large"); 1603 1604 Result.Multilibs.push_back(WithoutExceptions.makeMultilib()); 1605 Result.Multilibs.push_back(WithExceptions.makeMultilib()); 1606 Result.Multilibs.FilterOut(NonExistent); 1607 1608 Multilib::flags_list Flags; 1609 addMultilibFlag(Args.hasFlag(options::OPT_fexceptions, 1610 options::OPT_fno_exceptions, false), 1611 "-exceptions", Flags); 1612 if (Result.Multilibs.select(D, Flags, Result.SelectedMultilibs)) 1613 return true; 1614 1615 return false; 1616 } 1617 1618 static void findCSKYMultilibs(const Driver &D, const llvm::Triple &TargetTriple, 1619 StringRef Path, const ArgList &Args, 1620 DetectedMultilibs &Result) { 1621 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1622 1623 tools::csky::FloatABI TheFloatABI = tools::csky::getCSKYFloatABI(D, Args); 1624 std::optional<llvm::StringRef> Res = 1625 tools::csky::getCSKYArchName(D, Args, TargetTriple); 1626 1627 if (!Res) 1628 return; 1629 auto ARCHName = *Res; 1630 1631 Multilib::flags_list Flags; 1632 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Hard, "-hard-fp", 1633 Flags); 1634 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::SoftFP, "-soft-fp", 1635 Flags); 1636 addMultilibFlag(TheFloatABI == tools::csky::FloatABI::Soft, "-soft", Flags); 1637 addMultilibFlag(ARCHName == "ck801", "-march=ck801", Flags); 1638 addMultilibFlag(ARCHName == "ck802", "-march=ck802", Flags); 1639 addMultilibFlag(ARCHName == "ck803", "-march=ck803", Flags); 1640 addMultilibFlag(ARCHName == "ck804", "-march=ck804", Flags); 1641 addMultilibFlag(ARCHName == "ck805", "-march=ck805", Flags); 1642 addMultilibFlag(ARCHName == "ck807", "-march=ck807", Flags); 1643 addMultilibFlag(ARCHName == "ck810", "-march=ck810", Flags); 1644 addMultilibFlag(ARCHName == "ck810v", "-march=ck810v", Flags); 1645 addMultilibFlag(ARCHName == "ck860", "-march=ck860", Flags); 1646 addMultilibFlag(ARCHName == "ck860v", "-march=ck860v", Flags); 1647 1648 bool isBigEndian = false; 1649 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian, 1650 options::OPT_mbig_endian)) 1651 isBigEndian = !A->getOption().matches(options::OPT_mlittle_endian); 1652 addMultilibFlag(isBigEndian, "-EB", Flags); 1653 1654 auto HardFloat = MultilibBuilder("/hard-fp").flag("-hard-fp"); 1655 auto SoftFpFloat = MultilibBuilder("/soft-fp").flag("-soft-fp"); 1656 auto SoftFloat = MultilibBuilder("").flag("-soft"); 1657 auto Arch801 = MultilibBuilder("/ck801").flag("-march=ck801"); 1658 auto Arch802 = MultilibBuilder("/ck802").flag("-march=ck802"); 1659 auto Arch803 = MultilibBuilder("/ck803").flag("-march=ck803"); 1660 // CK804 use the same library as CK803 1661 auto Arch804 = MultilibBuilder("/ck803").flag("-march=ck804"); 1662 auto Arch805 = MultilibBuilder("/ck805").flag("-march=ck805"); 1663 auto Arch807 = MultilibBuilder("/ck807").flag("-march=ck807"); 1664 auto Arch810 = MultilibBuilder("").flag("-march=ck810"); 1665 auto Arch810v = MultilibBuilder("/ck810v").flag("-march=ck810v"); 1666 auto Arch860 = MultilibBuilder("/ck860").flag("-march=ck860"); 1667 auto Arch860v = MultilibBuilder("/ck860v").flag("-march=ck860v"); 1668 auto BigEndian = MultilibBuilder("/big").flag("-EB"); 1669 1670 MultilibSet CSKYMultilibs = 1671 MultilibSetBuilder() 1672 .Maybe(BigEndian) 1673 .Either({Arch801, Arch802, Arch803, Arch804, Arch805, Arch807, 1674 Arch810, Arch810v, Arch860, Arch860v}) 1675 .Either(HardFloat, SoftFpFloat, SoftFloat) 1676 .makeMultilibSet() 1677 .FilterOut(NonExistent); 1678 1679 if (CSKYMultilibs.select(D, Flags, Result.SelectedMultilibs)) 1680 Result.Multilibs = CSKYMultilibs; 1681 } 1682 1683 /// Extend the multi-lib re-use selection mechanism for RISC-V. 1684 /// This function will try to re-use multi-lib if they are compatible. 1685 /// Definition of compatible: 1686 /// - ABI must be the same. 1687 /// - multi-lib is a subset of current arch, e.g. multi-lib=march=rv32im 1688 /// is a subset of march=rv32imc. 1689 /// - march that contains atomic extension can't reuse multi-lib that 1690 /// doesn't have atomic, vice versa. e.g. multi-lib=march=rv32im and 1691 /// march=rv32ima are not compatible, because software and hardware 1692 /// atomic operation can't work together correctly. 1693 static bool 1694 selectRISCVMultilib(const Driver &D, const MultilibSet &RISCVMultilibSet, 1695 StringRef Arch, const Multilib::flags_list &Flags, 1696 llvm::SmallVectorImpl<Multilib> &SelectedMultilibs) { 1697 // Try to find the perfect matching multi-lib first. 1698 if (RISCVMultilibSet.select(D, Flags, SelectedMultilibs)) 1699 return true; 1700 1701 Multilib::flags_list NewFlags; 1702 std::vector<MultilibBuilder> NewMultilibs; 1703 1704 llvm::Expected<std::unique_ptr<llvm::RISCVISAInfo>> ParseResult = 1705 llvm::RISCVISAInfo::parseArchString( 1706 Arch, /*EnableExperimentalExtension=*/true, 1707 /*ExperimentalExtensionVersionCheck=*/false); 1708 // Ignore any error here, we assume it will be handled in another place. 1709 if (llvm::errorToBool(ParseResult.takeError())) 1710 return false; 1711 1712 auto &ISAInfo = *ParseResult; 1713 1714 addMultilibFlag(ISAInfo->getXLen() == 32, "-m32", NewFlags); 1715 addMultilibFlag(ISAInfo->getXLen() == 64, "-m64", NewFlags); 1716 1717 // Collect all flags except march=* 1718 for (StringRef Flag : Flags) { 1719 if (Flag.starts_with("!march=") || Flag.starts_with("-march=")) 1720 continue; 1721 1722 NewFlags.push_back(Flag.str()); 1723 } 1724 1725 llvm::StringSet<> AllArchExts; 1726 // Reconstruct multi-lib list, and break march option into separated 1727 // extension. e.g. march=rv32im -> +i +m 1728 for (const auto &M : RISCVMultilibSet) { 1729 bool Skip = false; 1730 1731 MultilibBuilder NewMultilib = 1732 MultilibBuilder(M.gccSuffix(), M.osSuffix(), M.includeSuffix()); 1733 for (StringRef Flag : M.flags()) { 1734 // Add back all flags except -march. 1735 if (!Flag.consume_front("-march=")) { 1736 NewMultilib.flag(Flag); 1737 continue; 1738 } 1739 1740 // Break down -march into individual extension. 1741 llvm::Expected<std::unique_ptr<llvm::RISCVISAInfo>> MLConfigParseResult = 1742 llvm::RISCVISAInfo::parseArchString( 1743 Flag, /*EnableExperimentalExtension=*/true, 1744 /*ExperimentalExtensionVersionCheck=*/false); 1745 // Ignore any error here, we assume it will handled in another place. 1746 if (llvm::errorToBool(MLConfigParseResult.takeError())) { 1747 // We might get a parsing error if rv32e in the list, we could just skip 1748 // that and process the rest of multi-lib configs. 1749 Skip = true; 1750 continue; 1751 } 1752 auto &MLConfigISAInfo = *MLConfigParseResult; 1753 1754 for (auto &MLConfigArchExt : MLConfigISAInfo->getExtensions()) { 1755 auto ExtName = MLConfigArchExt.first; 1756 NewMultilib.flag(Twine("-", ExtName).str()); 1757 1758 if (AllArchExts.insert(ExtName).second) { 1759 addMultilibFlag(ISAInfo->hasExtension(ExtName), 1760 Twine("-", ExtName).str(), NewFlags); 1761 } 1762 } 1763 1764 // Check the XLEN explicitly. 1765 if (MLConfigISAInfo->getXLen() == 32) { 1766 NewMultilib.flag("-m32"); 1767 NewMultilib.flag("-m64", /*Disallow*/ true); 1768 } else { 1769 NewMultilib.flag("-m32", /*Disallow*/ true); 1770 NewMultilib.flag("-m64"); 1771 } 1772 1773 // Atomic extension must be explicitly checked, soft and hard atomic 1774 // operation never co-work correctly. 1775 if (!MLConfigISAInfo->hasExtension("a")) 1776 NewMultilib.flag("-a", /*Disallow*/ true); 1777 } 1778 1779 if (Skip) 1780 continue; 1781 1782 NewMultilibs.emplace_back(NewMultilib); 1783 } 1784 1785 // Build an internal used only multi-lib list, used for checking any 1786 // compatible multi-lib. 1787 MultilibSet NewRISCVMultilibs = 1788 MultilibSetBuilder().Either(NewMultilibs).makeMultilibSet(); 1789 1790 if (NewRISCVMultilibs.select(D, NewFlags, SelectedMultilibs)) 1791 for (const Multilib &NewSelectedM : SelectedMultilibs) 1792 for (const auto &M : RISCVMultilibSet) 1793 // Look up the corresponding multi-lib entry in original multi-lib set. 1794 if (M.gccSuffix() == NewSelectedM.gccSuffix()) 1795 return true; 1796 1797 return false; 1798 } 1799 1800 static void findRISCVBareMetalMultilibs(const Driver &D, 1801 const llvm::Triple &TargetTriple, 1802 StringRef Path, const ArgList &Args, 1803 DetectedMultilibs &Result) { 1804 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1805 struct RiscvMultilib { 1806 StringRef march; 1807 StringRef mabi; 1808 }; 1809 // currently only support the set of multilibs like riscv-gnu-toolchain does. 1810 // TODO: support MULTILIB_REUSE 1811 constexpr RiscvMultilib RISCVMultilibSet[] = { 1812 {"rv32i", "ilp32"}, {"rv32im", "ilp32"}, {"rv32iac", "ilp32"}, 1813 {"rv32imac", "ilp32"}, {"rv32imafc", "ilp32f"}, {"rv64imac", "lp64"}, 1814 {"rv64imafdc", "lp64d"}}; 1815 1816 std::vector<MultilibBuilder> Ms; 1817 for (auto Element : RISCVMultilibSet) { 1818 // multilib path rule is ${march}/${mabi} 1819 Ms.emplace_back( 1820 MultilibBuilder( 1821 (Twine(Element.march) + "/" + Twine(Element.mabi)).str()) 1822 .flag(Twine("-march=", Element.march).str()) 1823 .flag(Twine("-mabi=", Element.mabi).str())); 1824 } 1825 MultilibSet RISCVMultilibs = 1826 MultilibSetBuilder() 1827 .Either(Ms) 1828 .makeMultilibSet() 1829 .FilterOut(NonExistent) 1830 .setFilePathsCallback([](const Multilib &M) { 1831 return std::vector<std::string>( 1832 {M.gccSuffix(), 1833 "/../../../../riscv64-unknown-elf/lib" + M.gccSuffix(), 1834 "/../../../../riscv32-unknown-elf/lib" + M.gccSuffix()}); 1835 }); 1836 1837 Multilib::flags_list Flags; 1838 llvm::StringSet<> Added_ABIs; 1839 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple); 1840 std::string MArch = tools::riscv::getRISCVArch(Args, TargetTriple); 1841 for (auto Element : RISCVMultilibSet) { 1842 addMultilibFlag(MArch == Element.march, 1843 Twine("-march=", Element.march).str().c_str(), Flags); 1844 if (!Added_ABIs.count(Element.mabi)) { 1845 Added_ABIs.insert(Element.mabi); 1846 addMultilibFlag(ABIName == Element.mabi, 1847 Twine("-mabi=", Element.mabi).str().c_str(), Flags); 1848 } 1849 } 1850 1851 if (selectRISCVMultilib(D, RISCVMultilibs, MArch, Flags, 1852 Result.SelectedMultilibs)) 1853 Result.Multilibs = RISCVMultilibs; 1854 } 1855 1856 static void findRISCVMultilibs(const Driver &D, 1857 const llvm::Triple &TargetTriple, StringRef Path, 1858 const ArgList &Args, DetectedMultilibs &Result) { 1859 if (TargetTriple.getOS() == llvm::Triple::UnknownOS) 1860 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result); 1861 1862 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1863 MultilibBuilder Ilp32 = 1864 MultilibBuilder("lib32/ilp32").flag("-m32").flag("-mabi=ilp32"); 1865 MultilibBuilder Ilp32f = 1866 MultilibBuilder("lib32/ilp32f").flag("-m32").flag("-mabi=ilp32f"); 1867 MultilibBuilder Ilp32d = 1868 MultilibBuilder("lib32/ilp32d").flag("-m32").flag("-mabi=ilp32d"); 1869 MultilibBuilder Lp64 = 1870 MultilibBuilder("lib64/lp64").flag("-m64").flag("-mabi=lp64"); 1871 MultilibBuilder Lp64f = 1872 MultilibBuilder("lib64/lp64f").flag("-m64").flag("-mabi=lp64f"); 1873 MultilibBuilder Lp64d = 1874 MultilibBuilder("lib64/lp64d").flag("-m64").flag("-mabi=lp64d"); 1875 MultilibSet RISCVMultilibs = 1876 MultilibSetBuilder() 1877 .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d}) 1878 .makeMultilibSet() 1879 .FilterOut(NonExistent); 1880 1881 Multilib::flags_list Flags; 1882 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64; 1883 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple); 1884 1885 addMultilibFlag(!IsRV64, "-m32", Flags); 1886 addMultilibFlag(IsRV64, "-m64", Flags); 1887 addMultilibFlag(ABIName == "ilp32", "-mabi=ilp32", Flags); 1888 addMultilibFlag(ABIName == "ilp32f", "-mabi=ilp32f", Flags); 1889 addMultilibFlag(ABIName == "ilp32d", "-mabi=ilp32d", Flags); 1890 addMultilibFlag(ABIName == "lp64", "-mabi=lp64", Flags); 1891 addMultilibFlag(ABIName == "lp64f", "-mabi=lp64f", Flags); 1892 addMultilibFlag(ABIName == "lp64d", "-mabi=lp64d", Flags); 1893 1894 if (RISCVMultilibs.select(D, Flags, Result.SelectedMultilibs)) 1895 Result.Multilibs = RISCVMultilibs; 1896 } 1897 1898 static bool findBiarchMultilibs(const Driver &D, 1899 const llvm::Triple &TargetTriple, 1900 StringRef Path, const ArgList &Args, 1901 bool NeedsBiarchSuffix, 1902 DetectedMultilibs &Result) { 1903 MultilibBuilder DefaultBuilder; 1904 1905 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs 1906 // in what would normally be GCCInstallPath and put the 64-bit 1907 // libs in a subdirectory named 64. The simple logic we follow is that 1908 // *if* there is a subdirectory of the right name with crtbegin.o in it, 1909 // we use that. If not, and if not a biarch triple alias, we look for 1910 // crtbegin.o without the subdirectory. 1911 1912 StringRef Suff64 = "/64"; 1913 // Solaris uses platform-specific suffixes instead of /64. 1914 if (TargetTriple.isOSSolaris()) { 1915 switch (TargetTriple.getArch()) { 1916 case llvm::Triple::x86: 1917 case llvm::Triple::x86_64: 1918 Suff64 = "/amd64"; 1919 break; 1920 case llvm::Triple::sparc: 1921 case llvm::Triple::sparcv9: 1922 Suff64 = "/sparcv9"; 1923 break; 1924 default: 1925 break; 1926 } 1927 } 1928 1929 Multilib Alt64 = MultilibBuilder() 1930 .gccSuffix(Suff64) 1931 .includeSuffix(Suff64) 1932 .flag("-m32", /*Disallow=*/true) 1933 .flag("-m64") 1934 .flag("-mx32", /*Disallow=*/true) 1935 .makeMultilib(); 1936 Multilib Alt32 = MultilibBuilder() 1937 .gccSuffix("/32") 1938 .includeSuffix("/32") 1939 .flag("-m32") 1940 .flag("-m64", /*Disallow=*/true) 1941 .flag("-mx32", /*Disallow=*/true) 1942 .makeMultilib(); 1943 Multilib Altx32 = MultilibBuilder() 1944 .gccSuffix("/x32") 1945 .includeSuffix("/x32") 1946 .flag("-m32", /*Disallow=*/true) 1947 .flag("-m64", /*Disallow=*/true) 1948 .flag("-mx32") 1949 .makeMultilib(); 1950 Multilib Alt32sparc = MultilibBuilder() 1951 .gccSuffix("/sparcv8plus") 1952 .includeSuffix("/sparcv8plus") 1953 .flag("-m32") 1954 .flag("-m64", /*Disallow=*/true) 1955 .makeMultilib(); 1956 1957 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a. 1958 FilterNonExistent NonExistent( 1959 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS()); 1960 1961 // Determine default multilib from: 32, 64, x32 1962 // Also handle cases such as 64 on 32, 32 on 64, etc. 1963 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN; 1964 const bool IsX32 = TargetTriple.isX32(); 1965 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32)) 1966 Want = WANT64; 1967 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32sparc)) 1968 Want = WANT64; 1969 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32)) 1970 Want = WANT64; 1971 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64)) 1972 Want = WANT32; 1973 else if (TargetTriple.isArch64Bit() && !NonExistent(Alt32sparc)) 1974 Want = WANT64; 1975 else { 1976 if (TargetTriple.isArch32Bit()) 1977 Want = NeedsBiarchSuffix ? WANT64 : WANT32; 1978 else if (IsX32) 1979 Want = NeedsBiarchSuffix ? WANT64 : WANTX32; 1980 else 1981 Want = NeedsBiarchSuffix ? WANT32 : WANT64; 1982 } 1983 1984 if (Want == WANT32) 1985 DefaultBuilder.flag("-m32") 1986 .flag("-m64", /*Disallow=*/true) 1987 .flag("-mx32", /*Disallow=*/true); 1988 else if (Want == WANT64) 1989 DefaultBuilder.flag("-m32", /*Disallow=*/true) 1990 .flag("-m64") 1991 .flag("-mx32", /*Disallow=*/true); 1992 else if (Want == WANTX32) 1993 DefaultBuilder.flag("-m32", /*Disallow=*/true) 1994 .flag("-m64", /*Disallow=*/true) 1995 .flag("-mx32"); 1996 else 1997 return false; 1998 1999 Multilib Default = DefaultBuilder.makeMultilib(); 2000 2001 Result.Multilibs.push_back(Default); 2002 Result.Multilibs.push_back(Alt64); 2003 Result.Multilibs.push_back(Alt32); 2004 Result.Multilibs.push_back(Altx32); 2005 Result.Multilibs.push_back(Alt32sparc); 2006 2007 Result.Multilibs.FilterOut(NonExistent); 2008 2009 Multilib::flags_list Flags; 2010 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "-m64", Flags); 2011 addMultilibFlag(TargetTriple.isArch32Bit(), "-m32", Flags); 2012 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "-mx32", Flags); 2013 2014 if (!Result.Multilibs.select(D, Flags, Result.SelectedMultilibs)) 2015 return false; 2016 2017 if (Result.SelectedMultilibs.back() == Alt64 || 2018 Result.SelectedMultilibs.back() == Alt32 || 2019 Result.SelectedMultilibs.back() == Altx32 || 2020 Result.SelectedMultilibs.back() == Alt32sparc) 2021 Result.BiarchSibling = Default; 2022 2023 return true; 2024 } 2025 2026 /// Generic_GCC - A tool chain using the 'gcc' command to perform 2027 /// all subcommands; this relies on gcc translating the majority of 2028 /// command line options. 2029 2030 /// Less-than for GCCVersion, implementing a Strict Weak Ordering. 2031 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor, 2032 int RHSPatch, 2033 StringRef RHSPatchSuffix) const { 2034 if (Major != RHSMajor) 2035 return Major < RHSMajor; 2036 if (Minor != RHSMinor) { 2037 // Note that versions without a specified minor sort higher than those with 2038 // a minor. 2039 if (RHSMinor == -1) 2040 return true; 2041 if (Minor == -1) 2042 return false; 2043 return Minor < RHSMinor; 2044 } 2045 if (Patch != RHSPatch) { 2046 // Note that versions without a specified patch sort higher than those with 2047 // a patch. 2048 if (RHSPatch == -1) 2049 return true; 2050 if (Patch == -1) 2051 return false; 2052 2053 // Otherwise just sort on the patch itself. 2054 return Patch < RHSPatch; 2055 } 2056 if (PatchSuffix != RHSPatchSuffix) { 2057 // Sort empty suffixes higher. 2058 if (RHSPatchSuffix.empty()) 2059 return true; 2060 if (PatchSuffix.empty()) 2061 return false; 2062 2063 // Provide a lexicographic sort to make this a total ordering. 2064 return PatchSuffix < RHSPatchSuffix; 2065 } 2066 2067 // The versions are equal. 2068 return false; 2069 } 2070 2071 /// Parse a GCCVersion object out of a string of text. 2072 /// 2073 /// This is the primary means of forming GCCVersion objects. 2074 /*static*/ 2075 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) { 2076 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 2077 std::pair<StringRef, StringRef> First = VersionText.split('.'); 2078 std::pair<StringRef, StringRef> Second = First.second.split('.'); 2079 2080 StringRef MajorStr = First.first; 2081 StringRef MinorStr = Second.first; 2082 StringRef PatchStr = Second.second; 2083 2084 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 2085 2086 // Parse version number strings such as: 2087 // 5 2088 // 4.4 2089 // 4.4-patched 2090 // 4.4.0 2091 // 4.4.x 2092 // 4.4.2-rc4 2093 // 4.4.x-patched 2094 // 10-win32 2095 // Split on '.', handle 1, 2 or 3 such segments. Each segment must contain 2096 // purely a number, except for the last one, where a non-number suffix 2097 // is stored in PatchSuffix. The third segment is allowed to not contain 2098 // a number at all. 2099 2100 auto TryParseLastNumber = [&](StringRef Segment, int &Number, 2101 std::string &OutStr) -> bool { 2102 // Look for a number prefix and parse that, and split out any trailing 2103 // string into GoodVersion.PatchSuffix. 2104 2105 if (size_t EndNumber = Segment.find_first_not_of("0123456789")) { 2106 StringRef NumberStr = Segment.slice(0, EndNumber); 2107 if (NumberStr.getAsInteger(10, Number) || Number < 0) 2108 return false; 2109 OutStr = NumberStr; 2110 GoodVersion.PatchSuffix = Segment.substr(EndNumber); 2111 return true; 2112 } 2113 return false; 2114 }; 2115 auto TryParseNumber = [](StringRef Segment, int &Number) -> bool { 2116 if (Segment.getAsInteger(10, Number) || Number < 0) 2117 return false; 2118 return true; 2119 }; 2120 2121 if (MinorStr.empty()) { 2122 // If no minor string, major is the last segment 2123 if (!TryParseLastNumber(MajorStr, GoodVersion.Major, GoodVersion.MajorStr)) 2124 return BadVersion; 2125 return GoodVersion; 2126 } 2127 2128 if (!TryParseNumber(MajorStr, GoodVersion.Major)) 2129 return BadVersion; 2130 GoodVersion.MajorStr = MajorStr; 2131 2132 if (PatchStr.empty()) { 2133 // If no patch string, minor is the last segment 2134 if (!TryParseLastNumber(MinorStr, GoodVersion.Minor, GoodVersion.MinorStr)) 2135 return BadVersion; 2136 return GoodVersion; 2137 } 2138 2139 if (!TryParseNumber(MinorStr, GoodVersion.Minor)) 2140 return BadVersion; 2141 GoodVersion.MinorStr = MinorStr; 2142 2143 // For the last segment, tolerate a missing number. 2144 std::string DummyStr; 2145 TryParseLastNumber(PatchStr, GoodVersion.Patch, DummyStr); 2146 return GoodVersion; 2147 } 2148 2149 static llvm::StringRef getGCCToolchainDir(const ArgList &Args, 2150 llvm::StringRef SysRoot) { 2151 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain); 2152 if (A) 2153 return A->getValue(); 2154 2155 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX. 2156 // GCC_INSTALL_PREFIX specifies the gcc installation for the default 2157 // sysroot and is likely not valid with a different sysroot. 2158 if (!SysRoot.empty()) 2159 return ""; 2160 2161 return GCC_INSTALL_PREFIX; 2162 } 2163 2164 /// Initialize a GCCInstallationDetector from the driver. 2165 /// 2166 /// This performs all of the autodetection and sets up the various paths. 2167 /// Once constructed, a GCCInstallationDetector is essentially immutable. 2168 /// 2169 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and 2170 /// should instead pull the target out of the driver. This is currently 2171 /// necessary because the driver doesn't store the final version of the target 2172 /// triple. 2173 void Generic_GCC::GCCInstallationDetector::init( 2174 const llvm::Triple &TargetTriple, const ArgList &Args) { 2175 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit() 2176 ? TargetTriple.get64BitArchVariant() 2177 : TargetTriple.get32BitArchVariant(); 2178 // The library directories which may contain GCC installations. 2179 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs; 2180 // The compatible GCC triples for this particular architecture. 2181 SmallVector<StringRef, 16> CandidateTripleAliases; 2182 SmallVector<StringRef, 16> CandidateBiarchTripleAliases; 2183 // Add some triples that we want to check first. 2184 CandidateTripleAliases.push_back(TargetTriple.str()); 2185 std::string TripleNoVendor, BiarchTripleNoVendor; 2186 if (TargetTriple.getVendor() == llvm::Triple::UnknownVendor) { 2187 StringRef OSEnv = TargetTriple.getOSAndEnvironmentName(); 2188 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32) 2189 OSEnv = "linux-gnu"; 2190 TripleNoVendor = (TargetTriple.getArchName().str() + '-' + OSEnv).str(); 2191 CandidateTripleAliases.push_back(TripleNoVendor); 2192 if (BiarchVariantTriple.getArch() != llvm::Triple::UnknownArch) { 2193 BiarchTripleNoVendor = 2194 (BiarchVariantTriple.getArchName().str() + '-' + OSEnv).str(); 2195 CandidateBiarchTripleAliases.push_back(BiarchTripleNoVendor); 2196 } 2197 } 2198 2199 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs, 2200 CandidateTripleAliases, CandidateBiarchLibDirs, 2201 CandidateBiarchTripleAliases); 2202 2203 // If --gcc-install-dir= is specified, skip filesystem detection. 2204 if (const Arg *A = 2205 Args.getLastArg(clang::driver::options::OPT_gcc_install_dir_EQ); 2206 A && A->getValue()[0]) { 2207 StringRef InstallDir = A->getValue(); 2208 if (!ScanGCCForMultilibs(TargetTriple, Args, InstallDir, false)) { 2209 D.Diag(diag::err_drv_invalid_gcc_install_dir) << InstallDir; 2210 } else { 2211 (void)InstallDir.consume_back("/"); 2212 StringRef VersionText = llvm::sys::path::filename(InstallDir); 2213 StringRef TripleText = 2214 llvm::sys::path::filename(llvm::sys::path::parent_path(InstallDir)); 2215 2216 Version = GCCVersion::Parse(VersionText); 2217 GCCTriple.setTriple(TripleText); 2218 GCCInstallPath = std::string(InstallDir); 2219 GCCParentLibPath = GCCInstallPath + "/../../.."; 2220 IsValid = true; 2221 } 2222 return; 2223 } 2224 2225 // If --gcc-triple is specified use this instead of trying to 2226 // auto-detect a triple. 2227 if (const Arg *A = 2228 Args.getLastArg(clang::driver::options::OPT_gcc_triple_EQ)) { 2229 StringRef GCCTriple = A->getValue(); 2230 CandidateTripleAliases.clear(); 2231 CandidateTripleAliases.push_back(GCCTriple); 2232 } 2233 2234 // Compute the set of prefixes for our search. 2235 SmallVector<std::string, 8> Prefixes; 2236 StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot); 2237 if (GCCToolchainDir != "") { 2238 if (GCCToolchainDir.back() == '/') 2239 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the / 2240 2241 Prefixes.push_back(std::string(GCCToolchainDir)); 2242 } else { 2243 // If we have a SysRoot, try that first. 2244 if (!D.SysRoot.empty()) { 2245 Prefixes.push_back(D.SysRoot); 2246 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 2247 } 2248 2249 // Then look for gcc installed alongside clang. 2250 Prefixes.push_back(D.Dir + "/.."); 2251 2252 // Next, look for prefix(es) that correspond to distribution-supplied gcc 2253 // installations. 2254 if (D.SysRoot.empty()) { 2255 // Typically /usr. 2256 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 2257 } 2258 2259 // Try to respect gcc-config on Gentoo if --gcc-toolchain is not provided. 2260 // This avoids accidentally enforcing the system GCC version when using a 2261 // custom toolchain. 2262 SmallVector<StringRef, 16> GentooTestTriples; 2263 // Try to match an exact triple as target triple first. 2264 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for 2265 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu" 2266 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching 2267 // triple x86_64-gentoo-linux-gnu is present. 2268 GentooTestTriples.push_back(TargetTriple.str()); 2269 GentooTestTriples.append(CandidateTripleAliases.begin(), 2270 CandidateTripleAliases.end()); 2271 if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples, 2272 CandidateBiarchTripleAliases)) 2273 return; 2274 } 2275 2276 // Loop over the various components which exist and select the best GCC 2277 // installation available. GCC installs are ranked by version number. 2278 const GCCVersion VersionZero = GCCVersion::Parse("0.0.0"); 2279 Version = VersionZero; 2280 for (const std::string &Prefix : Prefixes) { 2281 auto &VFS = D.getVFS(); 2282 if (!VFS.exists(Prefix)) 2283 continue; 2284 for (StringRef Suffix : CandidateLibDirs) { 2285 const std::string LibDir = concat(Prefix, Suffix); 2286 if (!VFS.exists(LibDir)) 2287 continue; 2288 // Maybe filter out <libdir>/gcc and <libdir>/gcc-cross. 2289 bool GCCDirExists = VFS.exists(LibDir + "/gcc"); 2290 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross"); 2291 for (StringRef Candidate : CandidateTripleAliases) 2292 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, false, 2293 GCCDirExists, GCCCrossDirExists); 2294 } 2295 for (StringRef Suffix : CandidateBiarchLibDirs) { 2296 const std::string LibDir = Prefix + Suffix.str(); 2297 if (!VFS.exists(LibDir)) 2298 continue; 2299 bool GCCDirExists = VFS.exists(LibDir + "/gcc"); 2300 bool GCCCrossDirExists = VFS.exists(LibDir + "/gcc-cross"); 2301 for (StringRef Candidate : CandidateBiarchTripleAliases) 2302 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, true, 2303 GCCDirExists, GCCCrossDirExists); 2304 } 2305 2306 // Skip other prefixes once a GCC installation is found. 2307 if (Version > VersionZero) 2308 break; 2309 } 2310 } 2311 2312 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const { 2313 for (const auto &InstallPath : CandidateGCCInstallPaths) 2314 OS << "Found candidate GCC installation: " << InstallPath << "\n"; 2315 2316 if (!GCCInstallPath.empty()) 2317 OS << "Selected GCC installation: " << GCCInstallPath << "\n"; 2318 2319 for (const auto &Multilib : Multilibs) 2320 OS << "Candidate multilib: " << Multilib << "\n"; 2321 2322 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault()) 2323 OS << "Selected multilib: " << SelectedMultilib << "\n"; 2324 } 2325 2326 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const { 2327 if (BiarchSibling) { 2328 M = *BiarchSibling; 2329 return true; 2330 } 2331 return false; 2332 } 2333 2334 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes( 2335 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes, 2336 StringRef SysRoot) { 2337 2338 if (TargetTriple.isOSHaiku()) { 2339 Prefixes.push_back(concat(SysRoot, "/boot/system/develop/tools")); 2340 return; 2341 } 2342 2343 if (TargetTriple.isOSSolaris()) { 2344 // Solaris is a special case. 2345 // The GCC installation is under 2346 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/ 2347 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with 2348 // /usr/gcc/<version> as a prefix. 2349 2350 SmallVector<std::pair<GCCVersion, std::string>, 8> SolarisPrefixes; 2351 std::string PrefixDir = concat(SysRoot, "/usr/gcc"); 2352 std::error_code EC; 2353 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC), 2354 LE; 2355 !EC && LI != LE; LI = LI.increment(EC)) { 2356 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2357 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 2358 2359 // Filter out obviously bad entries. 2360 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1)) 2361 continue; 2362 2363 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str(); 2364 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc"; 2365 if (!D.getVFS().exists(CandidateLibPath)) 2366 continue; 2367 2368 SolarisPrefixes.emplace_back( 2369 std::make_pair(CandidateVersion, CandidatePrefix)); 2370 } 2371 // Sort in reverse order so GCCInstallationDetector::init picks the latest. 2372 std::sort(SolarisPrefixes.rbegin(), SolarisPrefixes.rend()); 2373 for (auto p : SolarisPrefixes) 2374 Prefixes.emplace_back(p.second); 2375 return; 2376 } 2377 2378 // For Linux, if --sysroot is not specified, look for RHEL/CentOS devtoolsets 2379 // and gcc-toolsets. 2380 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux && 2381 D.getVFS().exists("/opt/rh")) { 2382 // TODO: We may want to remove this, since the functionality 2383 // can be achieved using config files. 2384 Prefixes.push_back("/opt/rh/gcc-toolset-12/root/usr"); 2385 Prefixes.push_back("/opt/rh/gcc-toolset-11/root/usr"); 2386 Prefixes.push_back("/opt/rh/gcc-toolset-10/root/usr"); 2387 Prefixes.push_back("/opt/rh/devtoolset-12/root/usr"); 2388 Prefixes.push_back("/opt/rh/devtoolset-11/root/usr"); 2389 Prefixes.push_back("/opt/rh/devtoolset-10/root/usr"); 2390 Prefixes.push_back("/opt/rh/devtoolset-9/root/usr"); 2391 Prefixes.push_back("/opt/rh/devtoolset-8/root/usr"); 2392 Prefixes.push_back("/opt/rh/devtoolset-7/root/usr"); 2393 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr"); 2394 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr"); 2395 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr"); 2396 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr"); 2397 } 2398 2399 // Fall back to /usr which is used by most non-Solaris systems. 2400 Prefixes.push_back(concat(SysRoot, "/usr")); 2401 } 2402 2403 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples( 2404 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple, 2405 SmallVectorImpl<StringRef> &LibDirs, 2406 SmallVectorImpl<StringRef> &TripleAliases, 2407 SmallVectorImpl<StringRef> &BiarchLibDirs, 2408 SmallVectorImpl<StringRef> &BiarchTripleAliases) { 2409 // Declare a bunch of static data sets that we'll select between below. These 2410 // are specifically designed to always refer to string literals to avoid any 2411 // lifetime or initialization issues. 2412 // 2413 // The *Triples variables hard code some triples so that, for example, 2414 // --target=aarch64 (incomplete triple) can detect lib/aarch64-linux-gnu. 2415 // They are not needed when the user has correct LLVM_DEFAULT_TARGET_TRIPLE 2416 // and always uses the full --target (e.g. --target=aarch64-linux-gnu). The 2417 // lists should shrink over time. Please don't add more elements to *Triples. 2418 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"}; 2419 static const char *const AArch64Triples[] = { 2420 "aarch64-none-linux-gnu", "aarch64-redhat-linux", "aarch64-suse-linux"}; 2421 static const char *const AArch64beLibDirs[] = {"/lib"}; 2422 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu"}; 2423 2424 static const char *const ARMLibDirs[] = {"/lib"}; 2425 static const char *const ARMTriples[] = {"arm-linux-gnueabi"}; 2426 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf", 2427 "armv7hl-redhat-linux-gnueabi", 2428 "armv6hl-suse-linux-gnueabi", 2429 "armv7hl-suse-linux-gnueabi"}; 2430 static const char *const ARMebLibDirs[] = {"/lib"}; 2431 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi"}; 2432 static const char *const ARMebHFTriples[] = { 2433 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"}; 2434 2435 static const char *const AVRLibDirs[] = {"/lib"}; 2436 static const char *const AVRTriples[] = {"avr"}; 2437 2438 static const char *const CSKYLibDirs[] = {"/lib"}; 2439 static const char *const CSKYTriples[] = { 2440 "csky-linux-gnuabiv2", "csky-linux-uclibcabiv2", "csky-elf-noneabiv2"}; 2441 2442 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"}; 2443 static const char *const X86_64Triples[] = { 2444 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu", 2445 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E", 2446 "x86_64-redhat-linux", "x86_64-suse-linux", 2447 "x86_64-manbo-linux-gnu", "x86_64-slackware-linux", 2448 "x86_64-unknown-linux", "x86_64-amazon-linux"}; 2449 static const char *const X32Triples[] = {"x86_64-linux-gnux32", 2450 "x86_64-pc-linux-gnux32"}; 2451 static const char *const X32LibDirs[] = {"/libx32", "/lib"}; 2452 static const char *const X86LibDirs[] = {"/lib32", "/lib"}; 2453 static const char *const X86Triples[] = { 2454 "i586-linux-gnu", "i686-linux-gnu", "i686-pc-linux-gnu", 2455 "i386-redhat-linux6E", "i686-redhat-linux", "i386-redhat-linux", 2456 "i586-suse-linux", "i686-montavista-linux", 2457 }; 2458 2459 static const char *const LoongArch64LibDirs[] = {"/lib64", "/lib"}; 2460 static const char *const LoongArch64Triples[] = { 2461 "loongarch64-linux-gnu", "loongarch64-unknown-linux-gnu"}; 2462 2463 static const char *const M68kLibDirs[] = {"/lib"}; 2464 static const char *const M68kTriples[] = {"m68k-unknown-linux-gnu", 2465 "m68k-suse-linux"}; 2466 2467 static const char *const MIPSLibDirs[] = {"/libo32", "/lib"}; 2468 static const char *const MIPSTriples[] = { 2469 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu", 2470 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"}; 2471 static const char *const MIPSELLibDirs[] = {"/libo32", "/lib"}; 2472 static const char *const MIPSELTriples[] = {"mipsel-linux-gnu", 2473 "mips-img-linux-gnu"}; 2474 2475 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"}; 2476 static const char *const MIPS64Triples[] = { 2477 "mips-mti-linux-gnu", "mips-img-linux-gnu", "mips64-linux-gnuabi64", 2478 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"}; 2479 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"}; 2480 static const char *const MIPS64ELTriples[] = { 2481 "mips-mti-linux-gnu", "mips-img-linux-gnu", "mips64el-linux-gnuabi64", 2482 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64"}; 2483 2484 static const char *const MIPSN32LibDirs[] = {"/lib32"}; 2485 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32", 2486 "mipsisa64r6-linux-gnuabin32"}; 2487 static const char *const MIPSN32ELLibDirs[] = {"/lib32"}; 2488 static const char *const MIPSN32ELTriples[] = { 2489 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"}; 2490 2491 static const char *const MSP430LibDirs[] = {"/lib"}; 2492 static const char *const MSP430Triples[] = {"msp430-elf"}; 2493 2494 static const char *const PPCLibDirs[] = {"/lib32", "/lib"}; 2495 static const char *const PPCTriples[] = { 2496 "powerpc-unknown-linux-gnu", 2497 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a 2498 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux". 2499 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"}; 2500 static const char *const PPCLELibDirs[] = {"/lib32", "/lib"}; 2501 static const char *const PPCLETriples[] = {"powerpcle-unknown-linux-gnu", 2502 "powerpcle-linux-musl"}; 2503 2504 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"}; 2505 static const char *const PPC64Triples[] = {"powerpc64-unknown-linux-gnu", 2506 "powerpc64-suse-linux", 2507 "ppc64-redhat-linux"}; 2508 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"}; 2509 static const char *const PPC64LETriples[] = { 2510 "powerpc64le-unknown-linux-gnu", "powerpc64le-none-linux-gnu", 2511 "powerpc64le-suse-linux", "ppc64le-redhat-linux"}; 2512 2513 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"}; 2514 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu", 2515 "riscv32-unknown-elf"}; 2516 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"}; 2517 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu", 2518 "riscv64-unknown-elf"}; 2519 2520 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"}; 2521 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu", 2522 "sparcv8-linux-gnu"}; 2523 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"}; 2524 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu", 2525 "sparcv9-linux-gnu"}; 2526 2527 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"}; 2528 static const char *const SystemZTriples[] = { 2529 "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu", "s390x-suse-linux", 2530 "s390x-redhat-linux"}; 2531 2532 using std::begin; 2533 using std::end; 2534 2535 if (TargetTriple.isOSSolaris()) { 2536 static const char *const SolarisLibDirs[] = {"/lib"}; 2537 static const char *const SolarisSparcV8Triples[] = { 2538 "sparc-sun-solaris2.11"}; 2539 static const char *const SolarisSparcV9Triples[] = { 2540 "sparcv9-sun-solaris2.11"}; 2541 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11"}; 2542 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11"}; 2543 LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 2544 BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 2545 switch (TargetTriple.getArch()) { 2546 case llvm::Triple::x86: 2547 TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples)); 2548 BiarchTripleAliases.append(begin(SolarisX86_64Triples), 2549 end(SolarisX86_64Triples)); 2550 break; 2551 case llvm::Triple::x86_64: 2552 TripleAliases.append(begin(SolarisX86_64Triples), 2553 end(SolarisX86_64Triples)); 2554 BiarchTripleAliases.append(begin(SolarisX86Triples), 2555 end(SolarisX86Triples)); 2556 break; 2557 case llvm::Triple::sparc: 2558 TripleAliases.append(begin(SolarisSparcV8Triples), 2559 end(SolarisSparcV8Triples)); 2560 BiarchTripleAliases.append(begin(SolarisSparcV9Triples), 2561 end(SolarisSparcV9Triples)); 2562 break; 2563 case llvm::Triple::sparcv9: 2564 TripleAliases.append(begin(SolarisSparcV9Triples), 2565 end(SolarisSparcV9Triples)); 2566 BiarchTripleAliases.append(begin(SolarisSparcV8Triples), 2567 end(SolarisSparcV8Triples)); 2568 break; 2569 default: 2570 break; 2571 } 2572 return; 2573 } 2574 2575 // Android targets should not use GNU/Linux tools or libraries. 2576 if (TargetTriple.isAndroid()) { 2577 static const char *const AArch64AndroidTriples[] = { 2578 "aarch64-linux-android"}; 2579 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"}; 2580 static const char *const X86AndroidTriples[] = {"i686-linux-android"}; 2581 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"}; 2582 2583 switch (TargetTriple.getArch()) { 2584 case llvm::Triple::aarch64: 2585 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2586 TripleAliases.append(begin(AArch64AndroidTriples), 2587 end(AArch64AndroidTriples)); 2588 break; 2589 case llvm::Triple::arm: 2590 case llvm::Triple::thumb: 2591 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2592 TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples)); 2593 break; 2594 case llvm::Triple::x86_64: 2595 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2596 TripleAliases.append(begin(X86_64AndroidTriples), 2597 end(X86_64AndroidTriples)); 2598 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2599 BiarchTripleAliases.append(begin(X86AndroidTriples), 2600 end(X86AndroidTriples)); 2601 break; 2602 case llvm::Triple::x86: 2603 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2604 TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples)); 2605 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2606 BiarchTripleAliases.append(begin(X86_64AndroidTriples), 2607 end(X86_64AndroidTriples)); 2608 break; 2609 default: 2610 break; 2611 } 2612 2613 return; 2614 } 2615 2616 if (TargetTriple.isOSHurd()) { 2617 switch (TargetTriple.getArch()) { 2618 case llvm::Triple::x86_64: 2619 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2620 TripleAliases.push_back("x86_64-gnu"); 2621 break; 2622 case llvm::Triple::x86: 2623 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2624 TripleAliases.push_back("i686-gnu"); 2625 break; 2626 default: 2627 break; 2628 } 2629 2630 return; 2631 } 2632 2633 switch (TargetTriple.getArch()) { 2634 case llvm::Triple::aarch64: 2635 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2636 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2637 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2638 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2639 break; 2640 case llvm::Triple::aarch64_be: 2641 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2642 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2643 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2644 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2645 break; 2646 case llvm::Triple::arm: 2647 case llvm::Triple::thumb: 2648 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2649 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF || 2650 TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHFT64 || 2651 TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF || 2652 TargetTriple.getEnvironment() == llvm::Triple::EABIHF) { 2653 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples)); 2654 } else { 2655 TripleAliases.append(begin(ARMTriples), end(ARMTriples)); 2656 } 2657 break; 2658 case llvm::Triple::armeb: 2659 case llvm::Triple::thumbeb: 2660 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs)); 2661 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF || 2662 TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHFT64 || 2663 TargetTriple.getEnvironment() == llvm::Triple::MuslEABIHF || 2664 TargetTriple.getEnvironment() == llvm::Triple::EABIHF) { 2665 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples)); 2666 } else { 2667 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples)); 2668 } 2669 break; 2670 case llvm::Triple::avr: 2671 LibDirs.append(begin(AVRLibDirs), end(AVRLibDirs)); 2672 TripleAliases.append(begin(AVRTriples), end(AVRTriples)); 2673 break; 2674 case llvm::Triple::csky: 2675 LibDirs.append(begin(CSKYLibDirs), end(CSKYLibDirs)); 2676 TripleAliases.append(begin(CSKYTriples), end(CSKYTriples)); 2677 break; 2678 case llvm::Triple::x86_64: 2679 if (TargetTriple.isX32()) { 2680 LibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2681 TripleAliases.append(begin(X32Triples), end(X32Triples)); 2682 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2683 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2684 } else { 2685 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2686 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2687 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2688 BiarchTripleAliases.append(begin(X32Triples), end(X32Triples)); 2689 } 2690 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2691 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples)); 2692 break; 2693 case llvm::Triple::x86: 2694 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2695 // MCU toolchain is 32 bit only and its triple alias is TargetTriple 2696 // itself, which will be appended below. 2697 if (!TargetTriple.isOSIAMCU()) { 2698 TripleAliases.append(begin(X86Triples), end(X86Triples)); 2699 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2700 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2701 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2702 BiarchTripleAliases.append(begin(X32Triples), end(X32Triples)); 2703 } 2704 break; 2705 // TODO: Handle loongarch32. 2706 case llvm::Triple::loongarch64: 2707 LibDirs.append(begin(LoongArch64LibDirs), end(LoongArch64LibDirs)); 2708 TripleAliases.append(begin(LoongArch64Triples), end(LoongArch64Triples)); 2709 break; 2710 case llvm::Triple::m68k: 2711 LibDirs.append(begin(M68kLibDirs), end(M68kLibDirs)); 2712 TripleAliases.append(begin(M68kTriples), end(M68kTriples)); 2713 break; 2714 case llvm::Triple::mips: 2715 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2716 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2717 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2718 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2719 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs)); 2720 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples)); 2721 break; 2722 case llvm::Triple::mipsel: 2723 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2724 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2725 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2726 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2727 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2728 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs)); 2729 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples)); 2730 break; 2731 case llvm::Triple::mips64: 2732 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2733 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2734 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2735 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2736 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs)); 2737 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples)); 2738 break; 2739 case llvm::Triple::mips64el: 2740 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2741 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2742 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2743 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2744 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs)); 2745 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples)); 2746 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2747 break; 2748 case llvm::Triple::msp430: 2749 LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs)); 2750 TripleAliases.append(begin(MSP430Triples), end(MSP430Triples)); 2751 break; 2752 case llvm::Triple::ppc: 2753 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2754 TripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2755 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2756 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2757 break; 2758 case llvm::Triple::ppcle: 2759 LibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs)); 2760 TripleAliases.append(begin(PPCLETriples), end(PPCLETriples)); 2761 BiarchLibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs)); 2762 BiarchTripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples)); 2763 break; 2764 case llvm::Triple::ppc64: 2765 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2766 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2767 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2768 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2769 break; 2770 case llvm::Triple::ppc64le: 2771 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs)); 2772 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples)); 2773 BiarchLibDirs.append(begin(PPCLELibDirs), end(PPCLELibDirs)); 2774 BiarchTripleAliases.append(begin(PPCLETriples), end(PPCLETriples)); 2775 break; 2776 case llvm::Triple::riscv32: 2777 LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2778 TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples)); 2779 BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs)); 2780 BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples)); 2781 break; 2782 case llvm::Triple::riscv64: 2783 LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs)); 2784 TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples)); 2785 BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2786 BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples)); 2787 break; 2788 case llvm::Triple::sparc: 2789 case llvm::Triple::sparcel: 2790 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2791 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2792 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2793 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2794 break; 2795 case llvm::Triple::sparcv9: 2796 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2797 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2798 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2799 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2800 break; 2801 case llvm::Triple::systemz: 2802 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs)); 2803 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples)); 2804 break; 2805 default: 2806 // By default, just rely on the standard lib directories and the original 2807 // triple. 2808 break; 2809 } 2810 2811 // Also include the multiarch variant if it's different. 2812 if (TargetTriple.str() != BiarchTriple.str()) 2813 BiarchTripleAliases.push_back(BiarchTriple.str()); 2814 } 2815 2816 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs( 2817 const llvm::Triple &TargetTriple, const ArgList &Args, 2818 StringRef Path, bool NeedsBiarchSuffix) { 2819 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 2820 DetectedMultilibs Detected; 2821 2822 // Android standalone toolchain could have multilibs for ARM and Thumb. 2823 // Debian mips multilibs behave more like the rest of the biarch ones, 2824 // so handle them there 2825 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) { 2826 // It should also work without multilibs in a simplified toolchain. 2827 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected); 2828 } else if (TargetTriple.isCSKY()) { 2829 findCSKYMultilibs(D, TargetTriple, Path, Args, Detected); 2830 } else if (TargetTriple.isMIPS()) { 2831 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected)) 2832 return false; 2833 } else if (TargetTriple.isRISCV()) { 2834 findRISCVMultilibs(D, TargetTriple, Path, Args, Detected); 2835 } else if (isMSP430(TargetArch)) { 2836 findMSP430Multilibs(D, TargetTriple, Path, Args, Detected); 2837 } else if (TargetArch == llvm::Triple::avr) { 2838 // AVR has no multilibs. 2839 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args, 2840 NeedsBiarchSuffix, Detected)) { 2841 return false; 2842 } 2843 2844 Multilibs = Detected.Multilibs; 2845 SelectedMultilib = Detected.SelectedMultilibs.empty() 2846 ? Multilib() 2847 : Detected.SelectedMultilibs.back(); 2848 BiarchSibling = Detected.BiarchSibling; 2849 2850 return true; 2851 } 2852 2853 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple( 2854 const llvm::Triple &TargetTriple, const ArgList &Args, 2855 const std::string &LibDir, StringRef CandidateTriple, 2856 bool NeedsBiarchSuffix, bool GCCDirExists, bool GCCCrossDirExists) { 2857 // Locations relative to the system lib directory where GCC's triple-specific 2858 // directories might reside. 2859 struct GCCLibSuffix { 2860 // Path from system lib directory to GCC triple-specific directory. 2861 std::string LibSuffix; 2862 // Path from GCC triple-specific directory back to system lib directory. 2863 // This is one '..' component per component in LibSuffix. 2864 StringRef ReversePath; 2865 // Whether this library suffix is relevant for the triple. 2866 bool Active; 2867 } Suffixes[] = { 2868 // This is the normal place. 2869 {"gcc/" + CandidateTriple.str(), "../..", GCCDirExists}, 2870 2871 // Debian puts cross-compilers in gcc-cross. 2872 {"gcc-cross/" + CandidateTriple.str(), "../..", GCCCrossDirExists}, 2873 2874 // The Freescale PPC SDK has the gcc libraries in 2875 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do 2876 // this on Freescale triples, though, since some systems put a *lot* of 2877 // files in that location, not just GCC installation data. 2878 {CandidateTriple.str(), "..", 2879 TargetTriple.getVendor() == llvm::Triple::Freescale || 2880 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}}; 2881 2882 for (auto &Suffix : Suffixes) { 2883 if (!Suffix.Active) 2884 continue; 2885 2886 StringRef LibSuffix = Suffix.LibSuffix; 2887 std::error_code EC; 2888 for (llvm::vfs::directory_iterator 2889 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC), 2890 LE; 2891 !EC && LI != LE; LI = LI.increment(EC)) { 2892 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2893 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 2894 if (CandidateVersion.Major != -1) // Filter obviously bad entries. 2895 if (!CandidateGCCInstallPaths.insert(std::string(LI->path())).second) 2896 continue; // Saw this path before; no need to look at it again. 2897 if (CandidateVersion.isOlderThan(4, 1, 1)) 2898 continue; 2899 if (CandidateVersion <= Version) 2900 continue; 2901 2902 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(), 2903 NeedsBiarchSuffix)) 2904 continue; 2905 2906 Version = CandidateVersion; 2907 GCCTriple.setTriple(CandidateTriple); 2908 // FIXME: We hack together the directory name here instead of 2909 // using LI to ensure stable path separators across Windows and 2910 // Linux. 2911 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str(); 2912 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str(); 2913 IsValid = true; 2914 } 2915 } 2916 } 2917 2918 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs( 2919 const llvm::Triple &TargetTriple, const ArgList &Args, 2920 const SmallVectorImpl<StringRef> &CandidateTriples, 2921 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) { 2922 if (!D.getVFS().exists(concat(D.SysRoot, GentooConfigDir))) 2923 return false; 2924 2925 for (StringRef CandidateTriple : CandidateTriples) { 2926 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple)) 2927 return true; 2928 } 2929 2930 for (StringRef CandidateTriple : CandidateBiarchTriples) { 2931 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true)) 2932 return true; 2933 } 2934 return false; 2935 } 2936 2937 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig( 2938 const llvm::Triple &TargetTriple, const ArgList &Args, 2939 StringRef CandidateTriple, bool NeedsBiarchSuffix) { 2940 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File = 2941 D.getVFS().getBufferForFile(concat(D.SysRoot, GentooConfigDir, 2942 "/config-" + CandidateTriple.str())); 2943 if (File) { 2944 SmallVector<StringRef, 2> Lines; 2945 File.get()->getBuffer().split(Lines, "\n"); 2946 for (StringRef Line : Lines) { 2947 Line = Line.trim(); 2948 // CURRENT=triple-version 2949 if (!Line.consume_front("CURRENT=")) 2950 continue; 2951 // Process the config file pointed to by CURRENT. 2952 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile = 2953 D.getVFS().getBufferForFile( 2954 concat(D.SysRoot, GentooConfigDir, "/" + Line)); 2955 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-'); 2956 // List of paths to scan for libraries. 2957 SmallVector<StringRef, 4> GentooScanPaths; 2958 // Scan the Config file to find installed GCC libraries path. 2959 // Typical content of the GCC config file: 2960 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/ 2961 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32" 2962 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man" 2963 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info" 2964 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4" 2965 // We are looking for the paths listed in LDPATH=... . 2966 if (ConfigFile) { 2967 SmallVector<StringRef, 2> ConfigLines; 2968 ConfigFile.get()->getBuffer().split(ConfigLines, "\n"); 2969 for (StringRef ConfLine : ConfigLines) { 2970 ConfLine = ConfLine.trim(); 2971 if (ConfLine.consume_front("LDPATH=")) { 2972 // Drop '"' from front and back if present. 2973 ConfLine.consume_back("\""); 2974 ConfLine.consume_front("\""); 2975 // Get all paths sperated by ':' 2976 ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false); 2977 } 2978 } 2979 } 2980 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}. 2981 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/" 2982 + ActiveVersion.second.str(); 2983 GentooScanPaths.push_back(StringRef(basePath)); 2984 2985 // Scan all paths for GCC libraries. 2986 for (const auto &GentooScanPath : GentooScanPaths) { 2987 std::string GentooPath = concat(D.SysRoot, GentooScanPath); 2988 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) { 2989 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath, 2990 NeedsBiarchSuffix)) 2991 continue; 2992 2993 Version = GCCVersion::Parse(ActiveVersion.second); 2994 GCCInstallPath = GentooPath; 2995 GCCParentLibPath = GentooPath + std::string("/../../.."); 2996 GCCTriple.setTriple(ActiveVersion.first); 2997 IsValid = true; 2998 return true; 2999 } 3000 } 3001 } 3002 } 3003 3004 return false; 3005 } 3006 3007 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple, 3008 const ArgList &Args) 3009 : ToolChain(D, Triple, Args), GCCInstallation(D), 3010 CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args), 3011 SYCLInstallation(D, Triple, Args) { 3012 getProgramPaths().push_back(getDriver().Dir); 3013 } 3014 3015 Generic_GCC::~Generic_GCC() {} 3016 3017 Tool *Generic_GCC::getTool(Action::ActionClass AC) const { 3018 switch (AC) { 3019 case Action::PreprocessJobClass: 3020 if (!Preprocess) 3021 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this)); 3022 return Preprocess.get(); 3023 case Action::CompileJobClass: 3024 if (!Compile) 3025 Compile.reset(new tools::gcc::Compiler(*this)); 3026 return Compile.get(); 3027 default: 3028 return ToolChain::getTool(AC); 3029 } 3030 } 3031 3032 Tool *Generic_GCC::buildAssembler() const { 3033 return new tools::gnutools::Assembler(*this); 3034 } 3035 3036 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); } 3037 3038 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const { 3039 // Print the information about how we detected the GCC installation. 3040 GCCInstallation.print(OS); 3041 CudaInstallation->print(OS); 3042 RocmInstallation->print(OS); 3043 } 3044 3045 ToolChain::UnwindTableLevel 3046 Generic_GCC::getDefaultUnwindTableLevel(const ArgList &Args) const { 3047 switch (getArch()) { 3048 case llvm::Triple::aarch64: 3049 case llvm::Triple::aarch64_be: 3050 case llvm::Triple::ppc: 3051 case llvm::Triple::ppcle: 3052 case llvm::Triple::ppc64: 3053 case llvm::Triple::ppc64le: 3054 case llvm::Triple::riscv32: 3055 case llvm::Triple::riscv64: 3056 case llvm::Triple::x86: 3057 case llvm::Triple::x86_64: 3058 return UnwindTableLevel::Asynchronous; 3059 default: 3060 return UnwindTableLevel::None; 3061 } 3062 } 3063 3064 bool Generic_GCC::isPICDefault() const { 3065 switch (getArch()) { 3066 case llvm::Triple::x86_64: 3067 return getTriple().isOSWindows(); 3068 case llvm::Triple::mips64: 3069 case llvm::Triple::mips64el: 3070 return true; 3071 default: 3072 return false; 3073 } 3074 } 3075 3076 bool Generic_GCC::isPIEDefault(const llvm::opt::ArgList &Args) const { 3077 return false; 3078 } 3079 3080 bool Generic_GCC::isPICDefaultForced() const { 3081 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows(); 3082 } 3083 3084 bool Generic_GCC::IsIntegratedAssemblerDefault() const { 3085 switch (getTriple().getArch()) { 3086 case llvm::Triple::nvptx: 3087 case llvm::Triple::nvptx64: 3088 case llvm::Triple::xcore: 3089 return false; 3090 default: 3091 return true; 3092 } 3093 } 3094 3095 void Generic_GCC::PushPPaths(ToolChain::path_list &PPaths) { 3096 // Cross-compiling binutils and GCC installations (vanilla and openSUSE at 3097 // least) put various tools in a triple-prefixed directory off of the parent 3098 // of the GCC installation. We use the GCC triple here to ensure that we end 3099 // up with tools that support the same amount of cross compiling as the 3100 // detected GCC installation. For example, if we find a GCC installation 3101 // targeting x86_64, but it is a bi-arch GCC installation, it can also be 3102 // used to target i386. 3103 if (GCCInstallation.isValid()) { 3104 PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" + 3105 GCCInstallation.getTriple().str() + "/bin") 3106 .str()); 3107 } 3108 } 3109 3110 void Generic_GCC::AddMultilibPaths(const Driver &D, 3111 const std::string &SysRoot, 3112 const std::string &OSLibDir, 3113 const std::string &MultiarchTriple, 3114 path_list &Paths) { 3115 // Add the multilib suffixed paths where they are available. 3116 if (GCCInstallation.isValid()) { 3117 assert(!SelectedMultilibs.empty()); 3118 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 3119 const std::string &LibPath = 3120 std::string(GCCInstallation.getParentLibPath()); 3121 3122 // Sourcery CodeBench MIPS toolchain holds some libraries under 3123 // a biarch-like suffix of the GCC installation. 3124 if (const auto &PathsCallback = Multilibs.filePathsCallback()) 3125 for (const auto &Path : PathsCallback(SelectedMultilibs.back())) 3126 addPathIfExists(D, GCCInstallation.getInstallPath() + Path, Paths); 3127 3128 // Add lib/gcc/$triple/$version, with an optional /multilib suffix. 3129 addPathIfExists(D, 3130 GCCInstallation.getInstallPath() + 3131 SelectedMultilibs.back().gccSuffix(), 3132 Paths); 3133 3134 // Add lib/gcc/$triple/$libdir 3135 // For GCC built with --enable-version-specific-runtime-libs. 3136 addPathIfExists(D, GCCInstallation.getInstallPath() + "/../" + OSLibDir, 3137 Paths); 3138 3139 // GCC cross compiling toolchains will install target libraries which ship 3140 // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as 3141 // any part of the GCC installation in 3142 // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat 3143 // debatable, but is the reality today. We need to search this tree even 3144 // when we have a sysroot somewhere else. It is the responsibility of 3145 // whomever is doing the cross build targeting a sysroot using a GCC 3146 // installation that is *not* within the system root to ensure two things: 3147 // 3148 // 1) Any DSOs that are linked in from this tree or from the install path 3149 // above must be present on the system root and found via an 3150 // appropriate rpath. 3151 // 2) There must not be libraries installed into 3152 // <prefix>/<triple>/<libdir> unless they should be preferred over 3153 // those within the system root. 3154 // 3155 // Note that this matches the GCC behavior. See the below comment for where 3156 // Clang diverges from GCC's behavior. 3157 addPathIfExists(D, 3158 LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir + 3159 SelectedMultilibs.back().osSuffix(), 3160 Paths); 3161 3162 // If the GCC installation we found is inside of the sysroot, we want to 3163 // prefer libraries installed in the parent prefix of the GCC installation. 3164 // It is important to *not* use these paths when the GCC installation is 3165 // outside of the system root as that can pick up unintended libraries. 3166 // This usually happens when there is an external cross compiler on the 3167 // host system, and a more minimal sysroot available that is the target of 3168 // the cross. Note that GCC does include some of these directories in some 3169 // configurations but this seems somewhere between questionable and simply 3170 // a bug. 3171 if (StringRef(LibPath).starts_with(SysRoot)) 3172 addPathIfExists(D, LibPath + "/../" + OSLibDir, Paths); 3173 } 3174 } 3175 3176 void Generic_GCC::AddMultiarchPaths(const Driver &D, 3177 const std::string &SysRoot, 3178 const std::string &OSLibDir, 3179 path_list &Paths) { 3180 if (GCCInstallation.isValid()) { 3181 const std::string &LibPath = 3182 std::string(GCCInstallation.getParentLibPath()); 3183 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 3184 const Multilib &Multilib = GCCInstallation.getMultilib(); 3185 addPathIfExists( 3186 D, LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(), 3187 Paths); 3188 } 3189 } 3190 3191 void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs, 3192 ArgStringList &CC1Args) const { 3193 // Add include directories specific to the selected multilib set and multilib. 3194 if (!GCCInstallation.isValid()) 3195 return; 3196 // gcc TOOL_INCLUDE_DIR. 3197 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 3198 std::string LibPath(GCCInstallation.getParentLibPath()); 3199 addSystemInclude(DriverArgs, CC1Args, 3200 Twine(LibPath) + "/../" + GCCTriple.str() + "/include"); 3201 3202 const auto &Callback = Multilibs.includeDirsCallback(); 3203 if (Callback) { 3204 for (const auto &Path : Callback(GCCInstallation.getMultilib())) 3205 addExternCSystemIncludeIfExists(DriverArgs, CC1Args, 3206 GCCInstallation.getInstallPath() + Path); 3207 } 3208 } 3209 3210 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 3211 ArgStringList &CC1Args) const { 3212 if (DriverArgs.hasArg(options::OPT_nostdinc, options::OPT_nostdincxx, 3213 options::OPT_nostdlibinc)) 3214 return; 3215 3216 switch (GetCXXStdlibType(DriverArgs)) { 3217 case ToolChain::CST_Libcxx: 3218 addLibCxxIncludePaths(DriverArgs, CC1Args); 3219 break; 3220 3221 case ToolChain::CST_Libstdcxx: 3222 addLibStdCxxIncludePaths(DriverArgs, CC1Args); 3223 break; 3224 } 3225 } 3226 3227 void Generic_GCC::addSYCLIncludeArgs(const ArgList &DriverArgs, 3228 ArgStringList &CC1Args) const { 3229 SYCLInstallation->addSYCLIncludeArgs(DriverArgs, CC1Args); 3230 } 3231 3232 void 3233 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 3234 llvm::opt::ArgStringList &CC1Args) const { 3235 const Driver &D = getDriver(); 3236 std::string SysRoot = computeSysRoot(); 3237 if (SysRoot.empty()) 3238 SysRoot = llvm::sys::path::get_separator(); 3239 3240 auto AddIncludePath = [&](StringRef Path, bool TargetDirRequired = false) { 3241 std::string Version = detectLibcxxVersion(Path); 3242 if (Version.empty()) 3243 return false; 3244 3245 // First add the per-target include path if it exists. 3246 bool TargetDirExists = false; 3247 std::optional<std::string> TargetIncludeDir = getTargetSubDirPath(Path); 3248 if (TargetIncludeDir) { 3249 SmallString<128> TargetDir(*TargetIncludeDir); 3250 llvm::sys::path::append(TargetDir, "c++", Version); 3251 if (D.getVFS().exists(TargetDir)) { 3252 addSystemInclude(DriverArgs, CC1Args, TargetDir); 3253 TargetDirExists = true; 3254 } 3255 } 3256 if (TargetDirRequired && !TargetDirExists) 3257 return false; 3258 3259 // Second add the generic one. 3260 SmallString<128> GenericDir(Path); 3261 llvm::sys::path::append(GenericDir, "c++", Version); 3262 addSystemInclude(DriverArgs, CC1Args, GenericDir); 3263 return true; 3264 }; 3265 3266 // Android only uses the libc++ headers installed alongside the toolchain if 3267 // they contain an Android-specific target include path, otherwise they're 3268 // incompatible with the NDK libraries. 3269 SmallString<128> DriverIncludeDir(getDriver().Dir); 3270 llvm::sys::path::append(DriverIncludeDir, "..", "include"); 3271 if (AddIncludePath(DriverIncludeDir, 3272 /*TargetDirRequired=*/getTriple().isAndroid())) 3273 return; 3274 // If this is a development, non-installed, clang, libcxx will 3275 // not be found at ../include/c++ but it likely to be found at 3276 // one of the following two locations: 3277 SmallString<128> UsrLocalIncludeDir(SysRoot); 3278 llvm::sys::path::append(UsrLocalIncludeDir, "usr", "local", "include"); 3279 if (AddIncludePath(UsrLocalIncludeDir)) 3280 return; 3281 SmallString<128> UsrIncludeDir(SysRoot); 3282 llvm::sys::path::append(UsrIncludeDir, "usr", "include"); 3283 if (AddIncludePath(UsrIncludeDir)) 3284 return; 3285 } 3286 3287 bool Generic_GCC::addLibStdCXXIncludePaths(Twine IncludeDir, StringRef Triple, 3288 Twine IncludeSuffix, 3289 const llvm::opt::ArgList &DriverArgs, 3290 llvm::opt::ArgStringList &CC1Args, 3291 bool DetectDebian) const { 3292 if (!getVFS().exists(IncludeDir)) 3293 return false; 3294 3295 // Debian native gcc uses g++-multiarch-incdir.diff which uses 3296 // include/x86_64-linux-gnu/c++/10$IncludeSuffix instead of 3297 // include/c++/10/x86_64-linux-gnu$IncludeSuffix. 3298 std::string Dir = IncludeDir.str(); 3299 StringRef Include = 3300 llvm::sys::path::parent_path(llvm::sys::path::parent_path(Dir)); 3301 std::string Path = 3302 (Include + "/" + Triple + Dir.substr(Include.size()) + IncludeSuffix) 3303 .str(); 3304 if (DetectDebian && !getVFS().exists(Path)) 3305 return false; 3306 3307 // GPLUSPLUS_INCLUDE_DIR 3308 addSystemInclude(DriverArgs, CC1Args, IncludeDir); 3309 // GPLUSPLUS_TOOL_INCLUDE_DIR. If Triple is not empty, add a target-dependent 3310 // include directory. 3311 if (DetectDebian) 3312 addSystemInclude(DriverArgs, CC1Args, Path); 3313 else if (!Triple.empty()) 3314 addSystemInclude(DriverArgs, CC1Args, 3315 IncludeDir + "/" + Triple + IncludeSuffix); 3316 // GPLUSPLUS_BACKWARD_INCLUDE_DIR 3317 addSystemInclude(DriverArgs, CC1Args, IncludeDir + "/backward"); 3318 return true; 3319 } 3320 3321 bool Generic_GCC::addGCCLibStdCxxIncludePaths( 3322 const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, 3323 StringRef DebianMultiarch) const { 3324 assert(GCCInstallation.isValid()); 3325 3326 // By default, look for the C++ headers in an include directory adjacent to 3327 // the lib directory of the GCC installation. Note that this is expect to be 3328 // equivalent to '/usr/include/c++/X.Y' in almost all cases. 3329 StringRef LibDir = GCCInstallation.getParentLibPath(); 3330 StringRef InstallDir = GCCInstallation.getInstallPath(); 3331 StringRef TripleStr = GCCInstallation.getTriple().str(); 3332 const Multilib &Multilib = GCCInstallation.getMultilib(); 3333 const GCCVersion &Version = GCCInstallation.getVersion(); 3334 3335 // Try /../$triple/include/c++/$version (gcc --print-multiarch is not empty). 3336 if (addLibStdCXXIncludePaths( 3337 LibDir.str() + "/../" + TripleStr + "/include/c++/" + Version.Text, 3338 TripleStr, Multilib.includeSuffix(), DriverArgs, CC1Args)) 3339 return true; 3340 3341 // Try /gcc/$triple/$version/include/c++/ (gcc --print-multiarch is not 3342 // empty). Like above but for GCC built with 3343 // --enable-version-specific-runtime-libs. 3344 if (addLibStdCXXIncludePaths(LibDir.str() + "/gcc/" + TripleStr + "/" + 3345 Version.Text + "/include/c++/", 3346 TripleStr, Multilib.includeSuffix(), DriverArgs, 3347 CC1Args)) 3348 return true; 3349 3350 // Detect Debian g++-multiarch-incdir.diff. 3351 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text, 3352 DebianMultiarch, Multilib.includeSuffix(), 3353 DriverArgs, CC1Args, /*Debian=*/true)) 3354 return true; 3355 3356 // Try /../include/c++/$version (gcc --print-multiarch is empty). 3357 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include/c++/" + Version.Text, 3358 TripleStr, Multilib.includeSuffix(), DriverArgs, 3359 CC1Args)) 3360 return true; 3361 3362 // Otherwise, fall back on a bunch of options which don't use multiarch 3363 // layouts for simplicity. 3364 const std::string LibStdCXXIncludePathCandidates[] = { 3365 // Gentoo is weird and places its headers inside the GCC install, 3366 // so if the first attempt to find the headers fails, try these patterns. 3367 InstallDir.str() + "/include/g++-v" + Version.Text, 3368 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." + 3369 Version.MinorStr, 3370 InstallDir.str() + "/include/g++-v" + Version.MajorStr, 3371 }; 3372 3373 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) { 3374 if (addLibStdCXXIncludePaths(IncludePath, TripleStr, 3375 Multilib.includeSuffix(), DriverArgs, CC1Args)) 3376 return true; 3377 } 3378 return false; 3379 } 3380 3381 void 3382 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 3383 llvm::opt::ArgStringList &CC1Args) const { 3384 if (GCCInstallation.isValid()) { 3385 addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args, 3386 GCCInstallation.getTriple().str()); 3387 } 3388 } 3389 3390 llvm::opt::DerivedArgList * 3391 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef, 3392 Action::OffloadKind DeviceOffloadKind) const { 3393 3394 // If this tool chain is used for an OpenMP offloading device we have to make 3395 // sure we always generate a shared library regardless of the commands the 3396 // user passed to the host. This is required because the runtime library 3397 // is required to load the device image dynamically at run time. 3398 if (DeviceOffloadKind == Action::OFK_OpenMP) { 3399 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs()); 3400 const OptTable &Opts = getDriver().getOpts(); 3401 3402 // Request the shared library. Given that these options are decided 3403 // implicitly, they do not refer to any base argument. 3404 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared)); 3405 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC)); 3406 3407 // Filter all the arguments we don't care passing to the offloading 3408 // toolchain as they can mess up with the creation of a shared library. 3409 for (auto *A : Args) { 3410 switch ((options::ID)A->getOption().getID()) { 3411 default: 3412 DAL->append(A); 3413 break; 3414 case options::OPT_shared: 3415 case options::OPT_dynamic: 3416 case options::OPT_static: 3417 case options::OPT_fPIC: 3418 case options::OPT_fno_PIC: 3419 case options::OPT_fpic: 3420 case options::OPT_fno_pic: 3421 case options::OPT_fPIE: 3422 case options::OPT_fno_PIE: 3423 case options::OPT_fpie: 3424 case options::OPT_fno_pie: 3425 break; 3426 } 3427 } 3428 return DAL; 3429 } 3430 return nullptr; 3431 } 3432 3433 void Generic_ELF::anchor() {} 3434 3435 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs, 3436 ArgStringList &CC1Args, 3437 Action::OffloadKind) const { 3438 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array, 3439 options::OPT_fno_use_init_array, true)) 3440 CC1Args.push_back("-fno-use-init-array"); 3441 } 3442