1 //===--- Gnu.cpp - Gnu Tool and ToolChain Implementations -------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "Gnu.h" 10 #include "Arch/ARM.h" 11 #include "Arch/Mips.h" 12 #include "Arch/PPC.h" 13 #include "Arch/RISCV.h" 14 #include "Arch/Sparc.h" 15 #include "Arch/SystemZ.h" 16 #include "CommonArgs.h" 17 #include "Linux.h" 18 #include "clang/Config/config.h" // for GCC_INSTALL_PREFIX 19 #include "clang/Driver/Compilation.h" 20 #include "clang/Driver/Driver.h" 21 #include "clang/Driver/DriverDiagnostic.h" 22 #include "clang/Driver/Options.h" 23 #include "clang/Driver/Tool.h" 24 #include "clang/Driver/ToolChain.h" 25 #include "llvm/Option/ArgList.h" 26 #include "llvm/Support/CodeGen.h" 27 #include "llvm/Support/Path.h" 28 #include "llvm/Support/TargetParser.h" 29 #include "llvm/Support/VirtualFileSystem.h" 30 #include <system_error> 31 32 using namespace clang::driver; 33 using namespace clang::driver::toolchains; 34 using namespace clang; 35 using namespace llvm::opt; 36 37 using tools::addMultilibFlag; 38 using tools::addPathIfExists; 39 40 static bool forwardToGCC(const Option &O) { 41 // Don't forward inputs from the original command line. They are added from 42 // InputInfoList. 43 return O.getKind() != Option::InputClass && 44 !O.hasFlag(options::DriverOption) && !O.hasFlag(options::LinkerInput); 45 } 46 47 // Switch CPU names not recognized by GNU assembler to a close CPU that it does 48 // recognize, instead of a lower march from being picked in the absence of a cpu 49 // flag. 50 static void normalizeCPUNamesForAssembler(const ArgList &Args, 51 ArgStringList &CmdArgs) { 52 if (Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) { 53 StringRef CPUArg(A->getValue()); 54 if (CPUArg.equals_lower("krait")) 55 CmdArgs.push_back("-mcpu=cortex-a15"); 56 else if(CPUArg.equals_lower("kryo")) 57 CmdArgs.push_back("-mcpu=cortex-a57"); 58 else 59 Args.AddLastArg(CmdArgs, options::OPT_mcpu_EQ); 60 } 61 } 62 63 void tools::gcc::Common::ConstructJob(Compilation &C, const JobAction &JA, 64 const InputInfo &Output, 65 const InputInfoList &Inputs, 66 const ArgList &Args, 67 const char *LinkingOutput) const { 68 const Driver &D = getToolChain().getDriver(); 69 ArgStringList CmdArgs; 70 71 for (const auto &A : Args) { 72 if (forwardToGCC(A->getOption())) { 73 // It is unfortunate that we have to claim here, as this means 74 // we will basically never report anything interesting for 75 // platforms using a generic gcc, even if we are just using gcc 76 // to get to the assembler. 77 A->claim(); 78 79 // Don't forward any -g arguments to assembly steps. 80 if (isa<AssembleJobAction>(JA) && 81 A->getOption().matches(options::OPT_g_Group)) 82 continue; 83 84 // Don't forward any -W arguments to assembly and link steps. 85 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) && 86 A->getOption().matches(options::OPT_W_Group)) 87 continue; 88 89 // Don't forward -mno-unaligned-access since GCC doesn't understand 90 // it and because it doesn't affect the assembly or link steps. 91 if ((isa<AssembleJobAction>(JA) || isa<LinkJobAction>(JA)) && 92 (A->getOption().matches(options::OPT_munaligned_access) || 93 A->getOption().matches(options::OPT_mno_unaligned_access))) 94 continue; 95 96 A->render(Args, CmdArgs); 97 } 98 } 99 100 RenderExtraToolArgs(JA, CmdArgs); 101 102 // If using a driver driver, force the arch. 103 if (getToolChain().getTriple().isOSDarwin()) { 104 CmdArgs.push_back("-arch"); 105 CmdArgs.push_back( 106 Args.MakeArgString(getToolChain().getDefaultUniversalArchName())); 107 } 108 109 // Try to force gcc to match the tool chain we want, if we recognize 110 // the arch. 111 // 112 // FIXME: The triple class should directly provide the information we want 113 // here. 114 switch (getToolChain().getArch()) { 115 default: 116 break; 117 case llvm::Triple::x86: 118 case llvm::Triple::ppc: 119 CmdArgs.push_back("-m32"); 120 break; 121 case llvm::Triple::x86_64: 122 case llvm::Triple::ppc64: 123 case llvm::Triple::ppc64le: 124 CmdArgs.push_back("-m64"); 125 break; 126 case llvm::Triple::sparcel: 127 CmdArgs.push_back("-EL"); 128 break; 129 } 130 131 if (Output.isFilename()) { 132 CmdArgs.push_back("-o"); 133 CmdArgs.push_back(Output.getFilename()); 134 } else { 135 assert(Output.isNothing() && "Unexpected output"); 136 CmdArgs.push_back("-fsyntax-only"); 137 } 138 139 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 140 141 // Only pass -x if gcc will understand it; otherwise hope gcc 142 // understands the suffix correctly. The main use case this would go 143 // wrong in is for linker inputs if they happened to have an odd 144 // suffix; really the only way to get this to happen is a command 145 // like '-x foobar a.c' which will treat a.c like a linker input. 146 // 147 // FIXME: For the linker case specifically, can we safely convert 148 // inputs into '-Wl,' options? 149 for (const auto &II : Inputs) { 150 // Don't try to pass LLVM or AST inputs to a generic gcc. 151 if (types::isLLVMIR(II.getType())) 152 D.Diag(clang::diag::err_drv_no_linker_llvm_support) 153 << getToolChain().getTripleString(); 154 else if (II.getType() == types::TY_AST) 155 D.Diag(diag::err_drv_no_ast_support) << getToolChain().getTripleString(); 156 else if (II.getType() == types::TY_ModuleFile) 157 D.Diag(diag::err_drv_no_module_support) 158 << getToolChain().getTripleString(); 159 160 if (types::canTypeBeUserSpecified(II.getType())) { 161 CmdArgs.push_back("-x"); 162 CmdArgs.push_back(types::getTypeName(II.getType())); 163 } 164 165 if (II.isFilename()) 166 CmdArgs.push_back(II.getFilename()); 167 else { 168 const Arg &A = II.getInputArg(); 169 170 // Reverse translate some rewritten options. 171 if (A.getOption().matches(options::OPT_Z_reserved_lib_stdcxx)) { 172 CmdArgs.push_back("-lstdc++"); 173 continue; 174 } 175 176 // Don't render as input, we need gcc to do the translations. 177 A.render(Args, CmdArgs); 178 } 179 } 180 181 const std::string &customGCCName = D.getCCCGenericGCCName(); 182 const char *GCCName; 183 if (!customGCCName.empty()) 184 GCCName = customGCCName.c_str(); 185 else if (D.CCCIsCXX()) { 186 GCCName = "g++"; 187 } else 188 GCCName = "gcc"; 189 190 const char *Exec = Args.MakeArgString(getToolChain().GetProgramPath(GCCName)); 191 C.addCommand(std::make_unique<Command>( 192 JA, *this, ResponseFileSupport::AtFileCurCP(), Exec, CmdArgs, Inputs)); 193 } 194 195 void tools::gcc::Preprocessor::RenderExtraToolArgs( 196 const JobAction &JA, ArgStringList &CmdArgs) const { 197 CmdArgs.push_back("-E"); 198 } 199 200 void tools::gcc::Compiler::RenderExtraToolArgs(const JobAction &JA, 201 ArgStringList &CmdArgs) const { 202 const Driver &D = getToolChain().getDriver(); 203 204 switch (JA.getType()) { 205 // If -flto, etc. are present then make sure not to force assembly output. 206 case types::TY_LLVM_IR: 207 case types::TY_LTO_IR: 208 case types::TY_LLVM_BC: 209 case types::TY_LTO_BC: 210 CmdArgs.push_back("-c"); 211 break; 212 // We assume we've got an "integrated" assembler in that gcc will produce an 213 // object file itself. 214 case types::TY_Object: 215 CmdArgs.push_back("-c"); 216 break; 217 case types::TY_PP_Asm: 218 CmdArgs.push_back("-S"); 219 break; 220 case types::TY_Nothing: 221 CmdArgs.push_back("-fsyntax-only"); 222 break; 223 default: 224 D.Diag(diag::err_drv_invalid_gcc_output_type) << getTypeName(JA.getType()); 225 } 226 } 227 228 void tools::gcc::Linker::RenderExtraToolArgs(const JobAction &JA, 229 ArgStringList &CmdArgs) const { 230 // The types are (hopefully) good enough. 231 } 232 233 // On Arm the endianness of the output file is determined by the target and 234 // can be overridden by the pseudo-target flags '-mlittle-endian'/'-EL' and 235 // '-mbig-endian'/'-EB'. Unlike other targets the flag does not result in a 236 // normalized triple so we must handle the flag here. 237 static bool isArmBigEndian(const llvm::Triple &Triple, 238 const ArgList &Args) { 239 bool IsBigEndian = false; 240 switch (Triple.getArch()) { 241 case llvm::Triple::armeb: 242 case llvm::Triple::thumbeb: 243 IsBigEndian = true; 244 LLVM_FALLTHROUGH; 245 case llvm::Triple::arm: 246 case llvm::Triple::thumb: 247 if (Arg *A = Args.getLastArg(options::OPT_mlittle_endian, 248 options::OPT_mbig_endian)) 249 IsBigEndian = !A->getOption().matches(options::OPT_mlittle_endian); 250 break; 251 default: 252 break; 253 } 254 return IsBigEndian; 255 } 256 257 static const char *getLDMOption(const llvm::Triple &T, const ArgList &Args) { 258 switch (T.getArch()) { 259 case llvm::Triple::x86: 260 if (T.isOSIAMCU()) 261 return "elf_iamcu"; 262 return "elf_i386"; 263 case llvm::Triple::aarch64: 264 return "aarch64linux"; 265 case llvm::Triple::aarch64_be: 266 return "aarch64linuxb"; 267 case llvm::Triple::arm: 268 case llvm::Triple::thumb: 269 case llvm::Triple::armeb: 270 case llvm::Triple::thumbeb: 271 return isArmBigEndian(T, Args) ? "armelfb_linux_eabi" : "armelf_linux_eabi"; 272 case llvm::Triple::ppc: 273 return "elf32ppclinux"; 274 case llvm::Triple::ppc64: 275 return "elf64ppc"; 276 case llvm::Triple::ppc64le: 277 return "elf64lppc"; 278 case llvm::Triple::riscv32: 279 return "elf32lriscv"; 280 case llvm::Triple::riscv64: 281 return "elf64lriscv"; 282 case llvm::Triple::sparc: 283 case llvm::Triple::sparcel: 284 return "elf32_sparc"; 285 case llvm::Triple::sparcv9: 286 return "elf64_sparc"; 287 case llvm::Triple::mips: 288 return "elf32btsmip"; 289 case llvm::Triple::mipsel: 290 return "elf32ltsmip"; 291 case llvm::Triple::mips64: 292 if (tools::mips::hasMipsAbiArg(Args, "n32") || 293 T.getEnvironment() == llvm::Triple::GNUABIN32) 294 return "elf32btsmipn32"; 295 return "elf64btsmip"; 296 case llvm::Triple::mips64el: 297 if (tools::mips::hasMipsAbiArg(Args, "n32") || 298 T.getEnvironment() == llvm::Triple::GNUABIN32) 299 return "elf32ltsmipn32"; 300 return "elf64ltsmip"; 301 case llvm::Triple::systemz: 302 return "elf64_s390"; 303 case llvm::Triple::x86_64: 304 if (T.getEnvironment() == llvm::Triple::GNUX32) 305 return "elf32_x86_64"; 306 return "elf_x86_64"; 307 case llvm::Triple::ve: 308 return "elf64ve"; 309 default: 310 return nullptr; 311 } 312 } 313 314 static bool getPIE(const ArgList &Args, const ToolChain &TC) { 315 if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_static) || 316 Args.hasArg(options::OPT_r) || Args.hasArg(options::OPT_static_pie)) 317 return false; 318 319 Arg *A = Args.getLastArg(options::OPT_pie, options::OPT_no_pie, 320 options::OPT_nopie); 321 if (!A) 322 return TC.isPIEDefault(); 323 return A->getOption().matches(options::OPT_pie); 324 } 325 326 static bool getStaticPIE(const ArgList &Args, const ToolChain &TC) { 327 bool HasStaticPIE = Args.hasArg(options::OPT_static_pie); 328 // -no-pie is an alias for -nopie. So, handling -nopie takes care of 329 // -no-pie as well. 330 if (HasStaticPIE && Args.hasArg(options::OPT_nopie)) { 331 const Driver &D = TC.getDriver(); 332 const llvm::opt::OptTable &Opts = D.getOpts(); 333 const char *StaticPIEName = Opts.getOptionName(options::OPT_static_pie); 334 const char *NoPIEName = Opts.getOptionName(options::OPT_nopie); 335 D.Diag(diag::err_drv_cannot_mix_options) << StaticPIEName << NoPIEName; 336 } 337 return HasStaticPIE; 338 } 339 340 static bool getStatic(const ArgList &Args) { 341 return Args.hasArg(options::OPT_static) && 342 !Args.hasArg(options::OPT_static_pie); 343 } 344 345 void tools::gnutools::StaticLibTool::ConstructJob( 346 Compilation &C, const JobAction &JA, const InputInfo &Output, 347 const InputInfoList &Inputs, const ArgList &Args, 348 const char *LinkingOutput) const { 349 const Driver &D = getToolChain().getDriver(); 350 351 // Silence warning for "clang -g foo.o -o foo" 352 Args.ClaimAllArgs(options::OPT_g_Group); 353 // and "clang -emit-llvm foo.o -o foo" 354 Args.ClaimAllArgs(options::OPT_emit_llvm); 355 // and for "clang -w foo.o -o foo". Other warning options are already 356 // handled somewhere else. 357 Args.ClaimAllArgs(options::OPT_w); 358 // Silence warnings when linking C code with a C++ '-stdlib' argument. 359 Args.ClaimAllArgs(options::OPT_stdlib_EQ); 360 361 // GNU ar tool command "ar <options> <output_file> <input_files>". 362 ArgStringList CmdArgs; 363 // Create and insert file members with a deterministic index. 364 CmdArgs.push_back("rcsD"); 365 CmdArgs.push_back(Output.getFilename()); 366 AddLinkerInputs(getToolChain(), Inputs, Args, CmdArgs, JA); 367 368 // Delete old output archive file if it already exists before generating a new 369 // archive file. 370 auto OutputFileName = Output.getFilename(); 371 if (Output.isFilename() && llvm::sys::fs::exists(OutputFileName)) { 372 if (std::error_code EC = llvm::sys::fs::remove(OutputFileName)) { 373 D.Diag(diag::err_drv_unable_to_remove_file) << EC.message(); 374 return; 375 } 376 } 377 378 const char *Exec = Args.MakeArgString(getToolChain().GetStaticLibToolPath()); 379 C.addCommand(std::make_unique<Command>( 380 JA, *this, ResponseFileSupport::AtFileCurCP(), Exec, CmdArgs, Inputs)); 381 } 382 383 void tools::gnutools::Linker::ConstructJob(Compilation &C, const JobAction &JA, 384 const InputInfo &Output, 385 const InputInfoList &Inputs, 386 const ArgList &Args, 387 const char *LinkingOutput) const { 388 // FIXME: The Linker class constructor takes a ToolChain and not a 389 // Generic_ELF, so the static_cast might return a reference to a invalid 390 // instance (see PR45061). Ideally, the Linker constructor needs to take a 391 // Generic_ELF instead. 392 const toolchains::Generic_ELF &ToolChain = 393 static_cast<const toolchains::Generic_ELF &>(getToolChain()); 394 const Driver &D = ToolChain.getDriver(); 395 396 const llvm::Triple &Triple = getToolChain().getEffectiveTriple(); 397 398 const llvm::Triple::ArchType Arch = ToolChain.getArch(); 399 const bool isAndroid = ToolChain.getTriple().isAndroid(); 400 const bool IsIAMCU = ToolChain.getTriple().isOSIAMCU(); 401 const bool IsVE = ToolChain.getTriple().isVE(); 402 const bool IsPIE = getPIE(Args, ToolChain); 403 const bool IsStaticPIE = getStaticPIE(Args, ToolChain); 404 const bool IsStatic = getStatic(Args); 405 const bool HasCRTBeginEndFiles = 406 ToolChain.getTriple().hasEnvironment() || 407 (ToolChain.getTriple().getVendor() != llvm::Triple::MipsTechnologies); 408 409 ArgStringList CmdArgs; 410 411 // Silence warning for "clang -g foo.o -o foo" 412 Args.ClaimAllArgs(options::OPT_g_Group); 413 // and "clang -emit-llvm foo.o -o foo" 414 Args.ClaimAllArgs(options::OPT_emit_llvm); 415 // and for "clang -w foo.o -o foo". Other warning options are already 416 // handled somewhere else. 417 Args.ClaimAllArgs(options::OPT_w); 418 419 if (!D.SysRoot.empty()) 420 CmdArgs.push_back(Args.MakeArgString("--sysroot=" + D.SysRoot)); 421 422 if (IsPIE) 423 CmdArgs.push_back("-pie"); 424 425 if (IsStaticPIE) { 426 CmdArgs.push_back("-static"); 427 CmdArgs.push_back("-pie"); 428 CmdArgs.push_back("--no-dynamic-linker"); 429 CmdArgs.push_back("-z"); 430 CmdArgs.push_back("text"); 431 } 432 433 if (ToolChain.isNoExecStackDefault()) { 434 CmdArgs.push_back("-z"); 435 CmdArgs.push_back("noexecstack"); 436 } 437 438 if (Args.hasArg(options::OPT_rdynamic)) 439 CmdArgs.push_back("-export-dynamic"); 440 441 if (Args.hasArg(options::OPT_s)) 442 CmdArgs.push_back("-s"); 443 444 if (Triple.isARM() || Triple.isThumb() || Triple.isAArch64()) { 445 bool IsBigEndian = isArmBigEndian(Triple, Args); 446 if (IsBigEndian) 447 arm::appendBE8LinkFlag(Args, CmdArgs, Triple); 448 IsBigEndian = IsBigEndian || Arch == llvm::Triple::aarch64_be; 449 CmdArgs.push_back(IsBigEndian ? "-EB" : "-EL"); 450 } 451 452 // Most Android ARM64 targets should enable the linker fix for erratum 453 // 843419. Only non-Cortex-A53 devices are allowed to skip this flag. 454 if (Arch == llvm::Triple::aarch64 && isAndroid) { 455 std::string CPU = getCPUName(Args, Triple); 456 if (CPU.empty() || CPU == "generic" || CPU == "cortex-a53") 457 CmdArgs.push_back("--fix-cortex-a53-843419"); 458 } 459 460 // Android does not allow shared text relocations. Emit a warning if the 461 // user's code contains any. 462 if (isAndroid) 463 CmdArgs.push_back("--warn-shared-textrel"); 464 465 ToolChain.addExtraOpts(CmdArgs); 466 467 CmdArgs.push_back("--eh-frame-hdr"); 468 469 if (const char *LDMOption = getLDMOption(ToolChain.getTriple(), Args)) { 470 CmdArgs.push_back("-m"); 471 CmdArgs.push_back(LDMOption); 472 } else { 473 D.Diag(diag::err_target_unknown_triple) << Triple.str(); 474 return; 475 } 476 477 if (IsStatic) { 478 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb || 479 Arch == llvm::Triple::thumb || Arch == llvm::Triple::thumbeb) 480 CmdArgs.push_back("-Bstatic"); 481 else 482 CmdArgs.push_back("-static"); 483 } else if (Args.hasArg(options::OPT_shared)) { 484 CmdArgs.push_back("-shared"); 485 } 486 487 if (!IsStatic) { 488 if (Args.hasArg(options::OPT_rdynamic)) 489 CmdArgs.push_back("-export-dynamic"); 490 491 if (!Args.hasArg(options::OPT_shared) && !IsStaticPIE) { 492 CmdArgs.push_back("-dynamic-linker"); 493 CmdArgs.push_back(Args.MakeArgString(Twine(D.DyldPrefix) + 494 ToolChain.getDynamicLinker(Args))); 495 } 496 } 497 498 CmdArgs.push_back("-o"); 499 CmdArgs.push_back(Output.getFilename()); 500 501 if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) { 502 if (!isAndroid && !IsIAMCU) { 503 const char *crt1 = nullptr; 504 if (!Args.hasArg(options::OPT_shared)) { 505 if (Args.hasArg(options::OPT_pg)) 506 crt1 = "gcrt1.o"; 507 else if (IsPIE) 508 crt1 = "Scrt1.o"; 509 else if (IsStaticPIE) 510 crt1 = "rcrt1.o"; 511 else 512 crt1 = "crt1.o"; 513 } 514 if (crt1) 515 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath(crt1))); 516 517 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crti.o"))); 518 } 519 520 if (IsVE) { 521 CmdArgs.push_back("-z"); 522 CmdArgs.push_back("max-page-size=0x4000000"); 523 } 524 525 if (IsIAMCU) 526 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crt0.o"))); 527 else if (HasCRTBeginEndFiles) { 528 std::string P; 529 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT && 530 !isAndroid) { 531 std::string crtbegin = ToolChain.getCompilerRT(Args, "crtbegin", 532 ToolChain::FT_Object); 533 if (ToolChain.getVFS().exists(crtbegin)) 534 P = crtbegin; 535 } 536 if (P.empty()) { 537 const char *crtbegin; 538 if (IsStatic) 539 crtbegin = isAndroid ? "crtbegin_static.o" : "crtbeginT.o"; 540 else if (Args.hasArg(options::OPT_shared)) 541 crtbegin = isAndroid ? "crtbegin_so.o" : "crtbeginS.o"; 542 else if (IsPIE || IsStaticPIE) 543 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbeginS.o"; 544 else 545 crtbegin = isAndroid ? "crtbegin_dynamic.o" : "crtbegin.o"; 546 P = ToolChain.GetFilePath(crtbegin); 547 } 548 CmdArgs.push_back(Args.MakeArgString(P)); 549 } 550 551 // Add crtfastmath.o if available and fast math is enabled. 552 ToolChain.addFastMathRuntimeIfAvailable(Args, CmdArgs); 553 } 554 555 Args.AddAllArgs(CmdArgs, options::OPT_L); 556 Args.AddAllArgs(CmdArgs, options::OPT_u); 557 558 ToolChain.AddFilePathLibArgs(Args, CmdArgs); 559 560 if (D.isUsingLTO()) { 561 assert(!Inputs.empty() && "Must have at least one input."); 562 addLTOOptions(ToolChain, Args, CmdArgs, Output, Inputs[0], 563 D.getLTOMode() == LTOK_Thin); 564 } 565 566 if (Args.hasArg(options::OPT_Z_Xlinker__no_demangle)) 567 CmdArgs.push_back("--no-demangle"); 568 569 bool NeedsSanitizerDeps = addSanitizerRuntimes(ToolChain, Args, CmdArgs); 570 bool NeedsXRayDeps = addXRayRuntime(ToolChain, Args, CmdArgs); 571 AddLinkerInputs(ToolChain, Inputs, Args, CmdArgs, JA); 572 // The profile runtime also needs access to system libraries. 573 getToolChain().addProfileRTLibs(Args, CmdArgs); 574 575 if (D.CCCIsCXX() && 576 !Args.hasArg(options::OPT_nostdlib, options::OPT_nodefaultlibs)) { 577 if (ToolChain.ShouldLinkCXXStdlib(Args)) { 578 bool OnlyLibstdcxxStatic = Args.hasArg(options::OPT_static_libstdcxx) && 579 !Args.hasArg(options::OPT_static); 580 if (OnlyLibstdcxxStatic) 581 CmdArgs.push_back("-Bstatic"); 582 ToolChain.AddCXXStdlibLibArgs(Args, CmdArgs); 583 if (OnlyLibstdcxxStatic) 584 CmdArgs.push_back("-Bdynamic"); 585 } 586 CmdArgs.push_back("-lm"); 587 } 588 // Silence warnings when linking C code with a C++ '-stdlib' argument. 589 Args.ClaimAllArgs(options::OPT_stdlib_EQ); 590 591 if (!Args.hasArg(options::OPT_nostdlib)) { 592 if (!Args.hasArg(options::OPT_nodefaultlibs)) { 593 if (IsStatic || IsStaticPIE) 594 CmdArgs.push_back("--start-group"); 595 596 if (NeedsSanitizerDeps) 597 linkSanitizerRuntimeDeps(ToolChain, CmdArgs); 598 599 if (NeedsXRayDeps) 600 linkXRayRuntimeDeps(ToolChain, CmdArgs); 601 602 bool WantPthread = Args.hasArg(options::OPT_pthread) || 603 Args.hasArg(options::OPT_pthreads); 604 605 // Use the static OpenMP runtime with -static-openmp 606 bool StaticOpenMP = Args.hasArg(options::OPT_static_openmp) && 607 !Args.hasArg(options::OPT_static); 608 609 // FIXME: Only pass GompNeedsRT = true for platforms with libgomp that 610 // require librt. Most modern Linux platforms do, but some may not. 611 if (addOpenMPRuntime(CmdArgs, ToolChain, Args, StaticOpenMP, 612 JA.isHostOffloading(Action::OFK_OpenMP), 613 /* GompNeedsRT= */ true)) 614 // OpenMP runtimes implies pthreads when using the GNU toolchain. 615 // FIXME: Does this really make sense for all GNU toolchains? 616 WantPthread = true; 617 618 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 619 620 if (WantPthread && !isAndroid) 621 CmdArgs.push_back("-lpthread"); 622 623 if (Args.hasArg(options::OPT_fsplit_stack)) 624 CmdArgs.push_back("--wrap=pthread_create"); 625 626 if (!Args.hasArg(options::OPT_nolibc)) 627 CmdArgs.push_back("-lc"); 628 629 // Add IAMCU specific libs, if needed. 630 if (IsIAMCU) 631 CmdArgs.push_back("-lgloss"); 632 633 if (IsStatic || IsStaticPIE) 634 CmdArgs.push_back("--end-group"); 635 else 636 AddRunTimeLibs(ToolChain, D, CmdArgs, Args); 637 638 // Add IAMCU specific libs (outside the group), if needed. 639 if (IsIAMCU) { 640 CmdArgs.push_back("--as-needed"); 641 CmdArgs.push_back("-lsoftfp"); 642 CmdArgs.push_back("--no-as-needed"); 643 } 644 } 645 646 if (!Args.hasArg(options::OPT_nostartfiles) && !IsIAMCU) { 647 if (HasCRTBeginEndFiles) { 648 std::string P; 649 if (ToolChain.GetRuntimeLibType(Args) == ToolChain::RLT_CompilerRT && 650 !isAndroid) { 651 std::string crtend = ToolChain.getCompilerRT(Args, "crtend", 652 ToolChain::FT_Object); 653 if (ToolChain.getVFS().exists(crtend)) 654 P = crtend; 655 } 656 if (P.empty()) { 657 const char *crtend; 658 if (Args.hasArg(options::OPT_shared)) 659 crtend = isAndroid ? "crtend_so.o" : "crtendS.o"; 660 else if (IsPIE || IsStaticPIE) 661 crtend = isAndroid ? "crtend_android.o" : "crtendS.o"; 662 else 663 crtend = isAndroid ? "crtend_android.o" : "crtend.o"; 664 P = ToolChain.GetFilePath(crtend); 665 } 666 CmdArgs.push_back(Args.MakeArgString(P)); 667 } 668 if (!isAndroid) 669 CmdArgs.push_back(Args.MakeArgString(ToolChain.GetFilePath("crtn.o"))); 670 } 671 } 672 673 Args.AddAllArgs(CmdArgs, options::OPT_T); 674 675 const char *Exec = Args.MakeArgString(ToolChain.GetLinkerPath()); 676 C.addCommand(std::make_unique<Command>( 677 JA, *this, ResponseFileSupport::AtFileCurCP(), Exec, CmdArgs, Inputs)); 678 } 679 680 void tools::gnutools::Assembler::ConstructJob(Compilation &C, 681 const JobAction &JA, 682 const InputInfo &Output, 683 const InputInfoList &Inputs, 684 const ArgList &Args, 685 const char *LinkingOutput) const { 686 const auto &D = getToolChain().getDriver(); 687 688 claimNoWarnArgs(Args); 689 690 ArgStringList CmdArgs; 691 692 llvm::Reloc::Model RelocationModel; 693 unsigned PICLevel; 694 bool IsPIE; 695 const char *DefaultAssembler = "as"; 696 std::tie(RelocationModel, PICLevel, IsPIE) = 697 ParsePICArgs(getToolChain(), Args); 698 699 if (const Arg *A = Args.getLastArg(options::OPT_gz, options::OPT_gz_EQ)) { 700 if (A->getOption().getID() == options::OPT_gz) { 701 CmdArgs.push_back("--compress-debug-sections"); 702 } else { 703 StringRef Value = A->getValue(); 704 if (Value == "none" || Value == "zlib" || Value == "zlib-gnu") { 705 CmdArgs.push_back( 706 Args.MakeArgString("--compress-debug-sections=" + Twine(Value))); 707 } else { 708 D.Diag(diag::err_drv_unsupported_option_argument) 709 << A->getOption().getName() << Value; 710 } 711 } 712 } 713 714 if (getToolChain().isNoExecStackDefault()) { 715 CmdArgs.push_back("--noexecstack"); 716 } 717 718 switch (getToolChain().getArch()) { 719 default: 720 break; 721 // Add --32/--64 to make sure we get the format we want. 722 // This is incomplete 723 case llvm::Triple::x86: 724 CmdArgs.push_back("--32"); 725 break; 726 case llvm::Triple::x86_64: 727 if (getToolChain().getTriple().getEnvironment() == llvm::Triple::GNUX32) 728 CmdArgs.push_back("--x32"); 729 else 730 CmdArgs.push_back("--64"); 731 break; 732 case llvm::Triple::ppc: { 733 CmdArgs.push_back("-a32"); 734 CmdArgs.push_back("-mppc"); 735 CmdArgs.push_back( 736 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple()))); 737 break; 738 } 739 case llvm::Triple::ppc64: { 740 CmdArgs.push_back("-a64"); 741 CmdArgs.push_back("-mppc64"); 742 CmdArgs.push_back( 743 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple()))); 744 break; 745 } 746 case llvm::Triple::ppc64le: { 747 CmdArgs.push_back("-a64"); 748 CmdArgs.push_back("-mppc64"); 749 CmdArgs.push_back("-mlittle-endian"); 750 CmdArgs.push_back( 751 ppc::getPPCAsmModeForCPU(getCPUName(Args, getToolChain().getTriple()))); 752 break; 753 } 754 case llvm::Triple::riscv32: 755 case llvm::Triple::riscv64: { 756 StringRef ABIName = riscv::getRISCVABI(Args, getToolChain().getTriple()); 757 CmdArgs.push_back("-mabi"); 758 CmdArgs.push_back(ABIName.data()); 759 StringRef MArchName = riscv::getRISCVArch(Args, getToolChain().getTriple()); 760 CmdArgs.push_back("-march"); 761 CmdArgs.push_back(MArchName.data()); 762 break; 763 } 764 case llvm::Triple::sparc: 765 case llvm::Triple::sparcel: { 766 CmdArgs.push_back("-32"); 767 std::string CPU = getCPUName(Args, getToolChain().getTriple()); 768 CmdArgs.push_back( 769 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 770 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 771 break; 772 } 773 case llvm::Triple::sparcv9: { 774 CmdArgs.push_back("-64"); 775 std::string CPU = getCPUName(Args, getToolChain().getTriple()); 776 CmdArgs.push_back( 777 sparc::getSparcAsmModeForCPU(CPU, getToolChain().getTriple())); 778 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 779 break; 780 } 781 case llvm::Triple::arm: 782 case llvm::Triple::armeb: 783 case llvm::Triple::thumb: 784 case llvm::Triple::thumbeb: { 785 const llvm::Triple &Triple2 = getToolChain().getTriple(); 786 CmdArgs.push_back(isArmBigEndian(Triple2, Args) ? "-EB" : "-EL"); 787 switch (Triple2.getSubArch()) { 788 case llvm::Triple::ARMSubArch_v7: 789 CmdArgs.push_back("-mfpu=neon"); 790 break; 791 case llvm::Triple::ARMSubArch_v8: 792 CmdArgs.push_back("-mfpu=crypto-neon-fp-armv8"); 793 break; 794 default: 795 break; 796 } 797 798 switch (arm::getARMFloatABI(getToolChain(), Args)) { 799 case arm::FloatABI::Invalid: llvm_unreachable("must have an ABI!"); 800 case arm::FloatABI::Soft: 801 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=soft")); 802 break; 803 case arm::FloatABI::SoftFP: 804 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=softfp")); 805 break; 806 case arm::FloatABI::Hard: 807 CmdArgs.push_back(Args.MakeArgString("-mfloat-abi=hard")); 808 break; 809 } 810 811 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 812 normalizeCPUNamesForAssembler(Args, CmdArgs); 813 814 Args.AddLastArg(CmdArgs, options::OPT_mfpu_EQ); 815 break; 816 } 817 case llvm::Triple::aarch64: 818 case llvm::Triple::aarch64_be: { 819 CmdArgs.push_back( 820 getToolChain().getArch() == llvm::Triple::aarch64_be ? "-EB" : "-EL"); 821 Args.AddLastArg(CmdArgs, options::OPT_march_EQ); 822 normalizeCPUNamesForAssembler(Args, CmdArgs); 823 824 break; 825 } 826 case llvm::Triple::mips: 827 case llvm::Triple::mipsel: 828 case llvm::Triple::mips64: 829 case llvm::Triple::mips64el: { 830 StringRef CPUName; 831 StringRef ABIName; 832 mips::getMipsCPUAndABI(Args, getToolChain().getTriple(), CPUName, ABIName); 833 ABIName = mips::getGnuCompatibleMipsABIName(ABIName); 834 835 CmdArgs.push_back("-march"); 836 CmdArgs.push_back(CPUName.data()); 837 838 CmdArgs.push_back("-mabi"); 839 CmdArgs.push_back(ABIName.data()); 840 841 // -mno-shared should be emitted unless -fpic, -fpie, -fPIC, -fPIE, 842 // or -mshared (not implemented) is in effect. 843 if (RelocationModel == llvm::Reloc::Static) 844 CmdArgs.push_back("-mno-shared"); 845 846 // LLVM doesn't support -mplt yet and acts as if it is always given. 847 // However, -mplt has no effect with the N64 ABI. 848 if (ABIName != "64" && !Args.hasArg(options::OPT_mno_abicalls)) 849 CmdArgs.push_back("-call_nonpic"); 850 851 if (getToolChain().getTriple().isLittleEndian()) 852 CmdArgs.push_back("-EL"); 853 else 854 CmdArgs.push_back("-EB"); 855 856 if (Arg *A = Args.getLastArg(options::OPT_mnan_EQ)) { 857 if (StringRef(A->getValue()) == "2008") 858 CmdArgs.push_back(Args.MakeArgString("-mnan=2008")); 859 } 860 861 // Add the last -mfp32/-mfpxx/-mfp64 or -mfpxx if it is enabled by default. 862 if (Arg *A = Args.getLastArg(options::OPT_mfp32, options::OPT_mfpxx, 863 options::OPT_mfp64)) { 864 A->claim(); 865 A->render(Args, CmdArgs); 866 } else if (mips::shouldUseFPXX( 867 Args, getToolChain().getTriple(), CPUName, ABIName, 868 mips::getMipsFloatABI(getToolChain().getDriver(), Args, 869 getToolChain().getTriple()))) 870 CmdArgs.push_back("-mfpxx"); 871 872 // Pass on -mmips16 or -mno-mips16. However, the assembler equivalent of 873 // -mno-mips16 is actually -no-mips16. 874 if (Arg *A = 875 Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16)) { 876 if (A->getOption().matches(options::OPT_mips16)) { 877 A->claim(); 878 A->render(Args, CmdArgs); 879 } else { 880 A->claim(); 881 CmdArgs.push_back("-no-mips16"); 882 } 883 } 884 885 Args.AddLastArg(CmdArgs, options::OPT_mmicromips, 886 options::OPT_mno_micromips); 887 Args.AddLastArg(CmdArgs, options::OPT_mdsp, options::OPT_mno_dsp); 888 Args.AddLastArg(CmdArgs, options::OPT_mdspr2, options::OPT_mno_dspr2); 889 890 if (Arg *A = Args.getLastArg(options::OPT_mmsa, options::OPT_mno_msa)) { 891 // Do not use AddLastArg because not all versions of MIPS assembler 892 // support -mmsa / -mno-msa options. 893 if (A->getOption().matches(options::OPT_mmsa)) 894 CmdArgs.push_back(Args.MakeArgString("-mmsa")); 895 } 896 897 Args.AddLastArg(CmdArgs, options::OPT_mhard_float, 898 options::OPT_msoft_float); 899 900 Args.AddLastArg(CmdArgs, options::OPT_mdouble_float, 901 options::OPT_msingle_float); 902 903 Args.AddLastArg(CmdArgs, options::OPT_modd_spreg, 904 options::OPT_mno_odd_spreg); 905 906 AddAssemblerKPIC(getToolChain(), Args, CmdArgs); 907 break; 908 } 909 case llvm::Triple::systemz: { 910 // Always pass an -march option, since our default of z10 is later 911 // than the GNU assembler's default. 912 std::string CPUName = systemz::getSystemZTargetCPU(Args); 913 CmdArgs.push_back(Args.MakeArgString("-march=" + CPUName)); 914 break; 915 } 916 case llvm::Triple::ve: 917 DefaultAssembler = "nas"; 918 } 919 920 for (const Arg *A : Args.filtered(options::OPT_ffile_prefix_map_EQ, 921 options::OPT_fdebug_prefix_map_EQ)) { 922 StringRef Map = A->getValue(); 923 if (Map.find('=') == StringRef::npos) 924 D.Diag(diag::err_drv_invalid_argument_to_option) 925 << Map << A->getOption().getName(); 926 else { 927 CmdArgs.push_back(Args.MakeArgString("--debug-prefix-map")); 928 CmdArgs.push_back(Args.MakeArgString(Map)); 929 } 930 A->claim(); 931 } 932 933 Args.AddAllArgs(CmdArgs, options::OPT_I); 934 Args.AddAllArgValues(CmdArgs, options::OPT_Wa_COMMA, options::OPT_Xassembler); 935 936 CmdArgs.push_back("-o"); 937 CmdArgs.push_back(Output.getFilename()); 938 939 for (const auto &II : Inputs) 940 CmdArgs.push_back(II.getFilename()); 941 942 const char *Exec = 943 Args.MakeArgString(getToolChain().GetProgramPath(DefaultAssembler)); 944 C.addCommand(std::make_unique<Command>( 945 JA, *this, ResponseFileSupport::AtFileCurCP(), Exec, CmdArgs, Inputs)); 946 947 // Handle the debug info splitting at object creation time if we're 948 // creating an object. 949 // TODO: Currently only works on linux with newer objcopy. 950 if (Args.hasArg(options::OPT_gsplit_dwarf) && 951 getToolChain().getTriple().isOSLinux()) 952 SplitDebugInfo(getToolChain(), C, *this, JA, Args, Output, 953 SplitDebugName(Args, Inputs[0], Output)); 954 } 955 956 namespace { 957 // Filter to remove Multilibs that don't exist as a suffix to Path 958 class FilterNonExistent { 959 StringRef Base, File; 960 llvm::vfs::FileSystem &VFS; 961 962 public: 963 FilterNonExistent(StringRef Base, StringRef File, llvm::vfs::FileSystem &VFS) 964 : Base(Base), File(File), VFS(VFS) {} 965 bool operator()(const Multilib &M) { 966 return !VFS.exists(Base + M.gccSuffix() + File); 967 } 968 }; 969 } // end anonymous namespace 970 971 static bool isSoftFloatABI(const ArgList &Args) { 972 Arg *A = Args.getLastArg(options::OPT_msoft_float, options::OPT_mhard_float, 973 options::OPT_mfloat_abi_EQ); 974 if (!A) 975 return false; 976 977 return A->getOption().matches(options::OPT_msoft_float) || 978 (A->getOption().matches(options::OPT_mfloat_abi_EQ) && 979 A->getValue() == StringRef("soft")); 980 } 981 982 static bool isArmOrThumbArch(llvm::Triple::ArchType Arch) { 983 return Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb; 984 } 985 986 static bool isMipsEL(llvm::Triple::ArchType Arch) { 987 return Arch == llvm::Triple::mipsel || Arch == llvm::Triple::mips64el; 988 } 989 990 static bool isMips16(const ArgList &Args) { 991 Arg *A = Args.getLastArg(options::OPT_mips16, options::OPT_mno_mips16); 992 return A && A->getOption().matches(options::OPT_mips16); 993 } 994 995 static bool isMicroMips(const ArgList &Args) { 996 Arg *A = Args.getLastArg(options::OPT_mmicromips, options::OPT_mno_micromips); 997 return A && A->getOption().matches(options::OPT_mmicromips); 998 } 999 1000 static bool isMSP430(llvm::Triple::ArchType Arch) { 1001 return Arch == llvm::Triple::msp430; 1002 } 1003 1004 static Multilib makeMultilib(StringRef commonSuffix) { 1005 return Multilib(commonSuffix, commonSuffix, commonSuffix); 1006 } 1007 1008 static bool findMipsCsMultilibs(const Multilib::flags_list &Flags, 1009 FilterNonExistent &NonExistent, 1010 DetectedMultilibs &Result) { 1011 // Check for Code Sourcery toolchain multilibs 1012 MultilibSet CSMipsMultilibs; 1013 { 1014 auto MArchMips16 = makeMultilib("/mips16").flag("+m32").flag("+mips16"); 1015 1016 auto MArchMicroMips = 1017 makeMultilib("/micromips").flag("+m32").flag("+mmicromips"); 1018 1019 auto MArchDefault = makeMultilib("").flag("-mips16").flag("-mmicromips"); 1020 1021 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc"); 1022 1023 auto SoftFloat = makeMultilib("/soft-float").flag("+msoft-float"); 1024 1025 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008"); 1026 1027 auto DefaultFloat = 1028 makeMultilib("").flag("-msoft-float").flag("-mnan=2008"); 1029 1030 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL"); 1031 1032 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 1033 1034 // Note that this one's osSuffix is "" 1035 auto MAbi64 = makeMultilib("") 1036 .gccSuffix("/64") 1037 .includeSuffix("/64") 1038 .flag("+mabi=n64") 1039 .flag("-mabi=n32") 1040 .flag("-m32"); 1041 1042 CSMipsMultilibs = 1043 MultilibSet() 1044 .Either(MArchMips16, MArchMicroMips, MArchDefault) 1045 .Maybe(UCLibc) 1046 .Either(SoftFloat, Nan2008, DefaultFloat) 1047 .FilterOut("/micromips/nan2008") 1048 .FilterOut("/mips16/nan2008") 1049 .Either(BigEndian, LittleEndian) 1050 .Maybe(MAbi64) 1051 .FilterOut("/mips16.*/64") 1052 .FilterOut("/micromips.*/64") 1053 .FilterOut(NonExistent) 1054 .setIncludeDirsCallback([](const Multilib &M) { 1055 std::vector<std::string> Dirs({"/include"}); 1056 if (StringRef(M.includeSuffix()).startswith("/uclibc")) 1057 Dirs.push_back( 1058 "/../../../../mips-linux-gnu/libc/uclibc/usr/include"); 1059 else 1060 Dirs.push_back("/../../../../mips-linux-gnu/libc/usr/include"); 1061 return Dirs; 1062 }); 1063 } 1064 1065 MultilibSet DebianMipsMultilibs; 1066 { 1067 Multilib MAbiN32 = 1068 Multilib().gccSuffix("/n32").includeSuffix("/n32").flag("+mabi=n32"); 1069 1070 Multilib M64 = Multilib() 1071 .gccSuffix("/64") 1072 .includeSuffix("/64") 1073 .flag("+m64") 1074 .flag("-m32") 1075 .flag("-mabi=n32"); 1076 1077 Multilib M32 = Multilib().flag("-m64").flag("+m32").flag("-mabi=n32"); 1078 1079 DebianMipsMultilibs = 1080 MultilibSet().Either(M32, M64, MAbiN32).FilterOut(NonExistent); 1081 } 1082 1083 // Sort candidates. Toolchain that best meets the directories tree goes first. 1084 // Then select the first toolchains matches command line flags. 1085 MultilibSet *Candidates[] = {&CSMipsMultilibs, &DebianMipsMultilibs}; 1086 if (CSMipsMultilibs.size() < DebianMipsMultilibs.size()) 1087 std::iter_swap(Candidates, Candidates + 1); 1088 for (const MultilibSet *Candidate : Candidates) { 1089 if (Candidate->select(Flags, Result.SelectedMultilib)) { 1090 if (Candidate == &DebianMipsMultilibs) 1091 Result.BiarchSibling = Multilib(); 1092 Result.Multilibs = *Candidate; 1093 return true; 1094 } 1095 } 1096 return false; 1097 } 1098 1099 static bool findMipsAndroidMultilibs(llvm::vfs::FileSystem &VFS, StringRef Path, 1100 const Multilib::flags_list &Flags, 1101 FilterNonExistent &NonExistent, 1102 DetectedMultilibs &Result) { 1103 1104 MultilibSet AndroidMipsMultilibs = 1105 MultilibSet() 1106 .Maybe(Multilib("/mips-r2").flag("+march=mips32r2")) 1107 .Maybe(Multilib("/mips-r6").flag("+march=mips32r6")) 1108 .FilterOut(NonExistent); 1109 1110 MultilibSet AndroidMipselMultilibs = 1111 MultilibSet() 1112 .Either(Multilib().flag("+march=mips32"), 1113 Multilib("/mips-r2", "", "/mips-r2").flag("+march=mips32r2"), 1114 Multilib("/mips-r6", "", "/mips-r6").flag("+march=mips32r6")) 1115 .FilterOut(NonExistent); 1116 1117 MultilibSet AndroidMips64elMultilibs = 1118 MultilibSet() 1119 .Either( 1120 Multilib().flag("+march=mips64r6"), 1121 Multilib("/32/mips-r1", "", "/mips-r1").flag("+march=mips32"), 1122 Multilib("/32/mips-r2", "", "/mips-r2").flag("+march=mips32r2"), 1123 Multilib("/32/mips-r6", "", "/mips-r6").flag("+march=mips32r6")) 1124 .FilterOut(NonExistent); 1125 1126 MultilibSet *MS = &AndroidMipsMultilibs; 1127 if (VFS.exists(Path + "/mips-r6")) 1128 MS = &AndroidMipselMultilibs; 1129 else if (VFS.exists(Path + "/32")) 1130 MS = &AndroidMips64elMultilibs; 1131 if (MS->select(Flags, Result.SelectedMultilib)) { 1132 Result.Multilibs = *MS; 1133 return true; 1134 } 1135 return false; 1136 } 1137 1138 static bool findMipsMuslMultilibs(const Multilib::flags_list &Flags, 1139 FilterNonExistent &NonExistent, 1140 DetectedMultilibs &Result) { 1141 // Musl toolchain multilibs 1142 MultilibSet MuslMipsMultilibs; 1143 { 1144 auto MArchMipsR2 = makeMultilib("") 1145 .osSuffix("/mips-r2-hard-musl") 1146 .flag("+EB") 1147 .flag("-EL") 1148 .flag("+march=mips32r2"); 1149 1150 auto MArchMipselR2 = makeMultilib("/mipsel-r2-hard-musl") 1151 .flag("-EB") 1152 .flag("+EL") 1153 .flag("+march=mips32r2"); 1154 1155 MuslMipsMultilibs = MultilibSet().Either(MArchMipsR2, MArchMipselR2); 1156 1157 // Specify the callback that computes the include directories. 1158 MuslMipsMultilibs.setIncludeDirsCallback([](const Multilib &M) { 1159 return std::vector<std::string>( 1160 {"/../sysroot" + M.osSuffix() + "/usr/include"}); 1161 }); 1162 } 1163 if (MuslMipsMultilibs.select(Flags, Result.SelectedMultilib)) { 1164 Result.Multilibs = MuslMipsMultilibs; 1165 return true; 1166 } 1167 return false; 1168 } 1169 1170 static bool findMipsMtiMultilibs(const Multilib::flags_list &Flags, 1171 FilterNonExistent &NonExistent, 1172 DetectedMultilibs &Result) { 1173 // CodeScape MTI toolchain v1.2 and early. 1174 MultilibSet MtiMipsMultilibsV1; 1175 { 1176 auto MArchMips32 = makeMultilib("/mips32") 1177 .flag("+m32") 1178 .flag("-m64") 1179 .flag("-mmicromips") 1180 .flag("+march=mips32"); 1181 1182 auto MArchMicroMips = makeMultilib("/micromips") 1183 .flag("+m32") 1184 .flag("-m64") 1185 .flag("+mmicromips"); 1186 1187 auto MArchMips64r2 = makeMultilib("/mips64r2") 1188 .flag("-m32") 1189 .flag("+m64") 1190 .flag("+march=mips64r2"); 1191 1192 auto MArchMips64 = makeMultilib("/mips64").flag("-m32").flag("+m64").flag( 1193 "-march=mips64r2"); 1194 1195 auto MArchDefault = makeMultilib("") 1196 .flag("+m32") 1197 .flag("-m64") 1198 .flag("-mmicromips") 1199 .flag("+march=mips32r2"); 1200 1201 auto Mips16 = makeMultilib("/mips16").flag("+mips16"); 1202 1203 auto UCLibc = makeMultilib("/uclibc").flag("+muclibc"); 1204 1205 auto MAbi64 = 1206 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32"); 1207 1208 auto BigEndian = makeMultilib("").flag("+EB").flag("-EL"); 1209 1210 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 1211 1212 auto SoftFloat = makeMultilib("/sof").flag("+msoft-float"); 1213 1214 auto Nan2008 = makeMultilib("/nan2008").flag("+mnan=2008"); 1215 1216 MtiMipsMultilibsV1 = 1217 MultilibSet() 1218 .Either(MArchMips32, MArchMicroMips, MArchMips64r2, MArchMips64, 1219 MArchDefault) 1220 .Maybe(UCLibc) 1221 .Maybe(Mips16) 1222 .FilterOut("/mips64/mips16") 1223 .FilterOut("/mips64r2/mips16") 1224 .FilterOut("/micromips/mips16") 1225 .Maybe(MAbi64) 1226 .FilterOut("/micromips/64") 1227 .FilterOut("/mips32/64") 1228 .FilterOut("^/64") 1229 .FilterOut("/mips16/64") 1230 .Either(BigEndian, LittleEndian) 1231 .Maybe(SoftFloat) 1232 .Maybe(Nan2008) 1233 .FilterOut(".*sof/nan2008") 1234 .FilterOut(NonExistent) 1235 .setIncludeDirsCallback([](const Multilib &M) { 1236 std::vector<std::string> Dirs({"/include"}); 1237 if (StringRef(M.includeSuffix()).startswith("/uclibc")) 1238 Dirs.push_back("/../../../../sysroot/uclibc/usr/include"); 1239 else 1240 Dirs.push_back("/../../../../sysroot/usr/include"); 1241 return Dirs; 1242 }); 1243 } 1244 1245 // CodeScape IMG toolchain starting from v1.3. 1246 MultilibSet MtiMipsMultilibsV2; 1247 { 1248 auto BeHard = makeMultilib("/mips-r2-hard") 1249 .flag("+EB") 1250 .flag("-msoft-float") 1251 .flag("-mnan=2008") 1252 .flag("-muclibc"); 1253 auto BeSoft = makeMultilib("/mips-r2-soft") 1254 .flag("+EB") 1255 .flag("+msoft-float") 1256 .flag("-mnan=2008"); 1257 auto ElHard = makeMultilib("/mipsel-r2-hard") 1258 .flag("+EL") 1259 .flag("-msoft-float") 1260 .flag("-mnan=2008") 1261 .flag("-muclibc"); 1262 auto ElSoft = makeMultilib("/mipsel-r2-soft") 1263 .flag("+EL") 1264 .flag("+msoft-float") 1265 .flag("-mnan=2008") 1266 .flag("-mmicromips"); 1267 auto BeHardNan = makeMultilib("/mips-r2-hard-nan2008") 1268 .flag("+EB") 1269 .flag("-msoft-float") 1270 .flag("+mnan=2008") 1271 .flag("-muclibc"); 1272 auto ElHardNan = makeMultilib("/mipsel-r2-hard-nan2008") 1273 .flag("+EL") 1274 .flag("-msoft-float") 1275 .flag("+mnan=2008") 1276 .flag("-muclibc") 1277 .flag("-mmicromips"); 1278 auto BeHardNanUclibc = makeMultilib("/mips-r2-hard-nan2008-uclibc") 1279 .flag("+EB") 1280 .flag("-msoft-float") 1281 .flag("+mnan=2008") 1282 .flag("+muclibc"); 1283 auto ElHardNanUclibc = makeMultilib("/mipsel-r2-hard-nan2008-uclibc") 1284 .flag("+EL") 1285 .flag("-msoft-float") 1286 .flag("+mnan=2008") 1287 .flag("+muclibc"); 1288 auto BeHardUclibc = makeMultilib("/mips-r2-hard-uclibc") 1289 .flag("+EB") 1290 .flag("-msoft-float") 1291 .flag("-mnan=2008") 1292 .flag("+muclibc"); 1293 auto ElHardUclibc = makeMultilib("/mipsel-r2-hard-uclibc") 1294 .flag("+EL") 1295 .flag("-msoft-float") 1296 .flag("-mnan=2008") 1297 .flag("+muclibc"); 1298 auto ElMicroHardNan = makeMultilib("/micromipsel-r2-hard-nan2008") 1299 .flag("+EL") 1300 .flag("-msoft-float") 1301 .flag("+mnan=2008") 1302 .flag("+mmicromips"); 1303 auto ElMicroSoft = makeMultilib("/micromipsel-r2-soft") 1304 .flag("+EL") 1305 .flag("+msoft-float") 1306 .flag("-mnan=2008") 1307 .flag("+mmicromips"); 1308 1309 auto O32 = 1310 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64"); 1311 auto N32 = 1312 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64"); 1313 auto N64 = 1314 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64"); 1315 1316 MtiMipsMultilibsV2 = 1317 MultilibSet() 1318 .Either({BeHard, BeSoft, ElHard, ElSoft, BeHardNan, ElHardNan, 1319 BeHardNanUclibc, ElHardNanUclibc, BeHardUclibc, 1320 ElHardUclibc, ElMicroHardNan, ElMicroSoft}) 1321 .Either(O32, N32, N64) 1322 .FilterOut(NonExistent) 1323 .setIncludeDirsCallback([](const Multilib &M) { 1324 return std::vector<std::string>({"/../../../../sysroot" + 1325 M.includeSuffix() + 1326 "/../usr/include"}); 1327 }) 1328 .setFilePathsCallback([](const Multilib &M) { 1329 return std::vector<std::string>( 1330 {"/../../../../mips-mti-linux-gnu/lib" + M.gccSuffix()}); 1331 }); 1332 } 1333 for (auto Candidate : {&MtiMipsMultilibsV1, &MtiMipsMultilibsV2}) { 1334 if (Candidate->select(Flags, Result.SelectedMultilib)) { 1335 Result.Multilibs = *Candidate; 1336 return true; 1337 } 1338 } 1339 return false; 1340 } 1341 1342 static bool findMipsImgMultilibs(const Multilib::flags_list &Flags, 1343 FilterNonExistent &NonExistent, 1344 DetectedMultilibs &Result) { 1345 // CodeScape IMG toolchain v1.2 and early. 1346 MultilibSet ImgMultilibsV1; 1347 { 1348 auto Mips64r6 = makeMultilib("/mips64r6").flag("+m64").flag("-m32"); 1349 1350 auto LittleEndian = makeMultilib("/el").flag("+EL").flag("-EB"); 1351 1352 auto MAbi64 = 1353 makeMultilib("/64").flag("+mabi=n64").flag("-mabi=n32").flag("-m32"); 1354 1355 ImgMultilibsV1 = 1356 MultilibSet() 1357 .Maybe(Mips64r6) 1358 .Maybe(MAbi64) 1359 .Maybe(LittleEndian) 1360 .FilterOut(NonExistent) 1361 .setIncludeDirsCallback([](const Multilib &M) { 1362 return std::vector<std::string>( 1363 {"/include", "/../../../../sysroot/usr/include"}); 1364 }); 1365 } 1366 1367 // CodeScape IMG toolchain starting from v1.3. 1368 MultilibSet ImgMultilibsV2; 1369 { 1370 auto BeHard = makeMultilib("/mips-r6-hard") 1371 .flag("+EB") 1372 .flag("-msoft-float") 1373 .flag("-mmicromips"); 1374 auto BeSoft = makeMultilib("/mips-r6-soft") 1375 .flag("+EB") 1376 .flag("+msoft-float") 1377 .flag("-mmicromips"); 1378 auto ElHard = makeMultilib("/mipsel-r6-hard") 1379 .flag("+EL") 1380 .flag("-msoft-float") 1381 .flag("-mmicromips"); 1382 auto ElSoft = makeMultilib("/mipsel-r6-soft") 1383 .flag("+EL") 1384 .flag("+msoft-float") 1385 .flag("-mmicromips"); 1386 auto BeMicroHard = makeMultilib("/micromips-r6-hard") 1387 .flag("+EB") 1388 .flag("-msoft-float") 1389 .flag("+mmicromips"); 1390 auto BeMicroSoft = makeMultilib("/micromips-r6-soft") 1391 .flag("+EB") 1392 .flag("+msoft-float") 1393 .flag("+mmicromips"); 1394 auto ElMicroHard = makeMultilib("/micromipsel-r6-hard") 1395 .flag("+EL") 1396 .flag("-msoft-float") 1397 .flag("+mmicromips"); 1398 auto ElMicroSoft = makeMultilib("/micromipsel-r6-soft") 1399 .flag("+EL") 1400 .flag("+msoft-float") 1401 .flag("+mmicromips"); 1402 1403 auto O32 = 1404 makeMultilib("/lib").osSuffix("").flag("-mabi=n32").flag("-mabi=n64"); 1405 auto N32 = 1406 makeMultilib("/lib32").osSuffix("").flag("+mabi=n32").flag("-mabi=n64"); 1407 auto N64 = 1408 makeMultilib("/lib64").osSuffix("").flag("-mabi=n32").flag("+mabi=n64"); 1409 1410 ImgMultilibsV2 = 1411 MultilibSet() 1412 .Either({BeHard, BeSoft, ElHard, ElSoft, BeMicroHard, BeMicroSoft, 1413 ElMicroHard, ElMicroSoft}) 1414 .Either(O32, N32, N64) 1415 .FilterOut(NonExistent) 1416 .setIncludeDirsCallback([](const Multilib &M) { 1417 return std::vector<std::string>({"/../../../../sysroot" + 1418 M.includeSuffix() + 1419 "/../usr/include"}); 1420 }) 1421 .setFilePathsCallback([](const Multilib &M) { 1422 return std::vector<std::string>( 1423 {"/../../../../mips-img-linux-gnu/lib" + M.gccSuffix()}); 1424 }); 1425 } 1426 for (auto Candidate : {&ImgMultilibsV1, &ImgMultilibsV2}) { 1427 if (Candidate->select(Flags, Result.SelectedMultilib)) { 1428 Result.Multilibs = *Candidate; 1429 return true; 1430 } 1431 } 1432 return false; 1433 } 1434 1435 bool clang::driver::findMIPSMultilibs(const Driver &D, 1436 const llvm::Triple &TargetTriple, 1437 StringRef Path, const ArgList &Args, 1438 DetectedMultilibs &Result) { 1439 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1440 1441 StringRef CPUName; 1442 StringRef ABIName; 1443 tools::mips::getMipsCPUAndABI(Args, TargetTriple, CPUName, ABIName); 1444 1445 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 1446 1447 Multilib::flags_list Flags; 1448 addMultilibFlag(TargetTriple.isMIPS32(), "m32", Flags); 1449 addMultilibFlag(TargetTriple.isMIPS64(), "m64", Flags); 1450 addMultilibFlag(isMips16(Args), "mips16", Flags); 1451 addMultilibFlag(CPUName == "mips32", "march=mips32", Flags); 1452 addMultilibFlag(CPUName == "mips32r2" || CPUName == "mips32r3" || 1453 CPUName == "mips32r5" || CPUName == "p5600", 1454 "march=mips32r2", Flags); 1455 addMultilibFlag(CPUName == "mips32r6", "march=mips32r6", Flags); 1456 addMultilibFlag(CPUName == "mips64", "march=mips64", Flags); 1457 addMultilibFlag(CPUName == "mips64r2" || CPUName == "mips64r3" || 1458 CPUName == "mips64r5" || CPUName == "octeon" || 1459 CPUName == "octeon+", 1460 "march=mips64r2", Flags); 1461 addMultilibFlag(CPUName == "mips64r6", "march=mips64r6", Flags); 1462 addMultilibFlag(isMicroMips(Args), "mmicromips", Flags); 1463 addMultilibFlag(tools::mips::isUCLibc(Args), "muclibc", Flags); 1464 addMultilibFlag(tools::mips::isNaN2008(Args, TargetTriple), "mnan=2008", 1465 Flags); 1466 addMultilibFlag(ABIName == "n32", "mabi=n32", Flags); 1467 addMultilibFlag(ABIName == "n64", "mabi=n64", Flags); 1468 addMultilibFlag(isSoftFloatABI(Args), "msoft-float", Flags); 1469 addMultilibFlag(!isSoftFloatABI(Args), "mhard-float", Flags); 1470 addMultilibFlag(isMipsEL(TargetArch), "EL", Flags); 1471 addMultilibFlag(!isMipsEL(TargetArch), "EB", Flags); 1472 1473 if (TargetTriple.isAndroid()) 1474 return findMipsAndroidMultilibs(D.getVFS(), Path, Flags, NonExistent, 1475 Result); 1476 1477 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1478 TargetTriple.getOS() == llvm::Triple::Linux && 1479 TargetTriple.getEnvironment() == llvm::Triple::UnknownEnvironment) 1480 return findMipsMuslMultilibs(Flags, NonExistent, Result); 1481 1482 if (TargetTriple.getVendor() == llvm::Triple::MipsTechnologies && 1483 TargetTriple.getOS() == llvm::Triple::Linux && 1484 TargetTriple.isGNUEnvironment()) 1485 return findMipsMtiMultilibs(Flags, NonExistent, Result); 1486 1487 if (TargetTriple.getVendor() == llvm::Triple::ImaginationTechnologies && 1488 TargetTriple.getOS() == llvm::Triple::Linux && 1489 TargetTriple.isGNUEnvironment()) 1490 return findMipsImgMultilibs(Flags, NonExistent, Result); 1491 1492 if (findMipsCsMultilibs(Flags, NonExistent, Result)) 1493 return true; 1494 1495 // Fallback to the regular toolchain-tree structure. 1496 Multilib Default; 1497 Result.Multilibs.push_back(Default); 1498 Result.Multilibs.FilterOut(NonExistent); 1499 1500 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) { 1501 Result.BiarchSibling = Multilib(); 1502 return true; 1503 } 1504 1505 return false; 1506 } 1507 1508 static void findAndroidArmMultilibs(const Driver &D, 1509 const llvm::Triple &TargetTriple, 1510 StringRef Path, const ArgList &Args, 1511 DetectedMultilibs &Result) { 1512 // Find multilibs with subdirectories like armv7-a, thumb, armv7-a/thumb. 1513 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1514 Multilib ArmV7Multilib = makeMultilib("/armv7-a") 1515 .flag("+march=armv7-a") 1516 .flag("-mthumb"); 1517 Multilib ThumbMultilib = makeMultilib("/thumb") 1518 .flag("-march=armv7-a") 1519 .flag("+mthumb"); 1520 Multilib ArmV7ThumbMultilib = makeMultilib("/armv7-a/thumb") 1521 .flag("+march=armv7-a") 1522 .flag("+mthumb"); 1523 Multilib DefaultMultilib = makeMultilib("") 1524 .flag("-march=armv7-a") 1525 .flag("-mthumb"); 1526 MultilibSet AndroidArmMultilibs = 1527 MultilibSet() 1528 .Either(ThumbMultilib, ArmV7Multilib, 1529 ArmV7ThumbMultilib, DefaultMultilib) 1530 .FilterOut(NonExistent); 1531 1532 Multilib::flags_list Flags; 1533 llvm::StringRef Arch = Args.getLastArgValue(options::OPT_march_EQ); 1534 bool IsArmArch = TargetTriple.getArch() == llvm::Triple::arm; 1535 bool IsThumbArch = TargetTriple.getArch() == llvm::Triple::thumb; 1536 bool IsV7SubArch = TargetTriple.getSubArch() == llvm::Triple::ARMSubArch_v7; 1537 bool IsThumbMode = IsThumbArch || 1538 Args.hasFlag(options::OPT_mthumb, options::OPT_mno_thumb, false) || 1539 (IsArmArch && llvm::ARM::parseArchISA(Arch) == llvm::ARM::ISAKind::THUMB); 1540 bool IsArmV7Mode = (IsArmArch || IsThumbArch) && 1541 (llvm::ARM::parseArchVersion(Arch) == 7 || 1542 (IsArmArch && Arch == "" && IsV7SubArch)); 1543 addMultilibFlag(IsArmV7Mode, "march=armv7-a", Flags); 1544 addMultilibFlag(IsThumbMode, "mthumb", Flags); 1545 1546 if (AndroidArmMultilibs.select(Flags, Result.SelectedMultilib)) 1547 Result.Multilibs = AndroidArmMultilibs; 1548 } 1549 1550 static bool findMSP430Multilibs(const Driver &D, 1551 const llvm::Triple &TargetTriple, 1552 StringRef Path, const ArgList &Args, 1553 DetectedMultilibs &Result) { 1554 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1555 Multilib MSP430Multilib = makeMultilib("/430"); 1556 // FIXME: when clang starts to support msp430x ISA additional logic 1557 // to select between multilib must be implemented 1558 // Multilib MSP430xMultilib = makeMultilib("/large"); 1559 1560 Result.Multilibs.push_back(MSP430Multilib); 1561 Result.Multilibs.FilterOut(NonExistent); 1562 1563 Multilib::flags_list Flags; 1564 if (Result.Multilibs.select(Flags, Result.SelectedMultilib)) 1565 return true; 1566 1567 return false; 1568 } 1569 1570 static void findRISCVBareMetalMultilibs(const Driver &D, 1571 const llvm::Triple &TargetTriple, 1572 StringRef Path, const ArgList &Args, 1573 DetectedMultilibs &Result) { 1574 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1575 struct RiscvMultilib { 1576 StringRef march; 1577 StringRef mabi; 1578 }; 1579 // currently only support the set of multilibs like riscv-gnu-toolchain does. 1580 // TODO: support MULTILIB_REUSE 1581 constexpr RiscvMultilib RISCVMultilibSet[] = { 1582 {"rv32i", "ilp32"}, {"rv32im", "ilp32"}, {"rv32iac", "ilp32"}, 1583 {"rv32imac", "ilp32"}, {"rv32imafc", "ilp32f"}, {"rv64imac", "lp64"}, 1584 {"rv64imafdc", "lp64d"}}; 1585 1586 std::vector<Multilib> Ms; 1587 for (auto Element : RISCVMultilibSet) { 1588 // multilib path rule is ${march}/${mabi} 1589 Ms.emplace_back( 1590 makeMultilib((Twine(Element.march) + "/" + Twine(Element.mabi)).str()) 1591 .flag(Twine("+march=", Element.march).str()) 1592 .flag(Twine("+mabi=", Element.mabi).str())); 1593 } 1594 MultilibSet RISCVMultilibs = 1595 MultilibSet() 1596 .Either(ArrayRef<Multilib>(Ms)) 1597 .FilterOut(NonExistent) 1598 .setFilePathsCallback([](const Multilib &M) { 1599 return std::vector<std::string>( 1600 {M.gccSuffix(), 1601 "/../../../../riscv64-unknown-elf/lib" + M.gccSuffix(), 1602 "/../../../../riscv32-unknown-elf/lib" + M.gccSuffix()}); 1603 }); 1604 1605 1606 Multilib::flags_list Flags; 1607 llvm::StringSet<> Added_ABIs; 1608 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple); 1609 StringRef MArch = tools::riscv::getRISCVArch(Args, TargetTriple); 1610 for (auto Element : RISCVMultilibSet) { 1611 addMultilibFlag(MArch == Element.march, 1612 Twine("march=", Element.march).str().c_str(), Flags); 1613 if (!Added_ABIs.count(Element.mabi)) { 1614 Added_ABIs.insert(Element.mabi); 1615 addMultilibFlag(ABIName == Element.mabi, 1616 Twine("mabi=", Element.mabi).str().c_str(), Flags); 1617 } 1618 } 1619 1620 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib)) 1621 Result.Multilibs = RISCVMultilibs; 1622 } 1623 1624 static void findRISCVMultilibs(const Driver &D, 1625 const llvm::Triple &TargetTriple, StringRef Path, 1626 const ArgList &Args, DetectedMultilibs &Result) { 1627 if (TargetTriple.getOS() == llvm::Triple::UnknownOS) 1628 return findRISCVBareMetalMultilibs(D, TargetTriple, Path, Args, Result); 1629 1630 FilterNonExistent NonExistent(Path, "/crtbegin.o", D.getVFS()); 1631 Multilib Ilp32 = makeMultilib("lib32/ilp32").flag("+m32").flag("+mabi=ilp32"); 1632 Multilib Ilp32f = 1633 makeMultilib("lib32/ilp32f").flag("+m32").flag("+mabi=ilp32f"); 1634 Multilib Ilp32d = 1635 makeMultilib("lib32/ilp32d").flag("+m32").flag("+mabi=ilp32d"); 1636 Multilib Lp64 = makeMultilib("lib64/lp64").flag("+m64").flag("+mabi=lp64"); 1637 Multilib Lp64f = makeMultilib("lib64/lp64f").flag("+m64").flag("+mabi=lp64f"); 1638 Multilib Lp64d = makeMultilib("lib64/lp64d").flag("+m64").flag("+mabi=lp64d"); 1639 MultilibSet RISCVMultilibs = 1640 MultilibSet() 1641 .Either({Ilp32, Ilp32f, Ilp32d, Lp64, Lp64f, Lp64d}) 1642 .FilterOut(NonExistent); 1643 1644 Multilib::flags_list Flags; 1645 bool IsRV64 = TargetTriple.getArch() == llvm::Triple::riscv64; 1646 StringRef ABIName = tools::riscv::getRISCVABI(Args, TargetTriple); 1647 1648 addMultilibFlag(!IsRV64, "m32", Flags); 1649 addMultilibFlag(IsRV64, "m64", Flags); 1650 addMultilibFlag(ABIName == "ilp32", "mabi=ilp32", Flags); 1651 addMultilibFlag(ABIName == "ilp32f", "mabi=ilp32f", Flags); 1652 addMultilibFlag(ABIName == "ilp32d", "mabi=ilp32d", Flags); 1653 addMultilibFlag(ABIName == "lp64", "mabi=lp64", Flags); 1654 addMultilibFlag(ABIName == "lp64f", "mabi=lp64f", Flags); 1655 addMultilibFlag(ABIName == "lp64d", "mabi=lp64d", Flags); 1656 1657 if (RISCVMultilibs.select(Flags, Result.SelectedMultilib)) 1658 Result.Multilibs = RISCVMultilibs; 1659 } 1660 1661 static bool findBiarchMultilibs(const Driver &D, 1662 const llvm::Triple &TargetTriple, 1663 StringRef Path, const ArgList &Args, 1664 bool NeedsBiarchSuffix, 1665 DetectedMultilibs &Result) { 1666 Multilib Default; 1667 1668 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs 1669 // in what would normally be GCCInstallPath and put the 64-bit 1670 // libs in a subdirectory named 64. The simple logic we follow is that 1671 // *if* there is a subdirectory of the right name with crtbegin.o in it, 1672 // we use that. If not, and if not a biarch triple alias, we look for 1673 // crtbegin.o without the subdirectory. 1674 1675 StringRef Suff64 = "/64"; 1676 // Solaris uses platform-specific suffixes instead of /64. 1677 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 1678 switch (TargetTriple.getArch()) { 1679 case llvm::Triple::x86: 1680 case llvm::Triple::x86_64: 1681 Suff64 = "/amd64"; 1682 break; 1683 case llvm::Triple::sparc: 1684 case llvm::Triple::sparcv9: 1685 Suff64 = "/sparcv9"; 1686 break; 1687 default: 1688 break; 1689 } 1690 } 1691 1692 Multilib Alt64 = Multilib() 1693 .gccSuffix(Suff64) 1694 .includeSuffix(Suff64) 1695 .flag("-m32") 1696 .flag("+m64") 1697 .flag("-mx32"); 1698 Multilib Alt32 = Multilib() 1699 .gccSuffix("/32") 1700 .includeSuffix("/32") 1701 .flag("+m32") 1702 .flag("-m64") 1703 .flag("-mx32"); 1704 Multilib Altx32 = Multilib() 1705 .gccSuffix("/x32") 1706 .includeSuffix("/x32") 1707 .flag("-m32") 1708 .flag("-m64") 1709 .flag("+mx32"); 1710 1711 // GCC toolchain for IAMCU doesn't have crtbegin.o, so look for libgcc.a. 1712 FilterNonExistent NonExistent( 1713 Path, TargetTriple.isOSIAMCU() ? "/libgcc.a" : "/crtbegin.o", D.getVFS()); 1714 1715 // Determine default multilib from: 32, 64, x32 1716 // Also handle cases such as 64 on 32, 32 on 64, etc. 1717 enum { UNKNOWN, WANT32, WANT64, WANTX32 } Want = UNKNOWN; 1718 const bool IsX32 = TargetTriple.getEnvironment() == llvm::Triple::GNUX32; 1719 if (TargetTriple.isArch32Bit() && !NonExistent(Alt32)) 1720 Want = WANT64; 1721 else if (TargetTriple.isArch64Bit() && IsX32 && !NonExistent(Altx32)) 1722 Want = WANT64; 1723 else if (TargetTriple.isArch64Bit() && !IsX32 && !NonExistent(Alt64)) 1724 Want = WANT32; 1725 else { 1726 if (TargetTriple.isArch32Bit()) 1727 Want = NeedsBiarchSuffix ? WANT64 : WANT32; 1728 else if (IsX32) 1729 Want = NeedsBiarchSuffix ? WANT64 : WANTX32; 1730 else 1731 Want = NeedsBiarchSuffix ? WANT32 : WANT64; 1732 } 1733 1734 if (Want == WANT32) 1735 Default.flag("+m32").flag("-m64").flag("-mx32"); 1736 else if (Want == WANT64) 1737 Default.flag("-m32").flag("+m64").flag("-mx32"); 1738 else if (Want == WANTX32) 1739 Default.flag("-m32").flag("-m64").flag("+mx32"); 1740 else 1741 return false; 1742 1743 Result.Multilibs.push_back(Default); 1744 Result.Multilibs.push_back(Alt64); 1745 Result.Multilibs.push_back(Alt32); 1746 Result.Multilibs.push_back(Altx32); 1747 1748 Result.Multilibs.FilterOut(NonExistent); 1749 1750 Multilib::flags_list Flags; 1751 addMultilibFlag(TargetTriple.isArch64Bit() && !IsX32, "m64", Flags); 1752 addMultilibFlag(TargetTriple.isArch32Bit(), "m32", Flags); 1753 addMultilibFlag(TargetTriple.isArch64Bit() && IsX32, "mx32", Flags); 1754 1755 if (!Result.Multilibs.select(Flags, Result.SelectedMultilib)) 1756 return false; 1757 1758 if (Result.SelectedMultilib == Alt64 || Result.SelectedMultilib == Alt32 || 1759 Result.SelectedMultilib == Altx32) 1760 Result.BiarchSibling = Default; 1761 1762 return true; 1763 } 1764 1765 /// Generic_GCC - A tool chain using the 'gcc' command to perform 1766 /// all subcommands; this relies on gcc translating the majority of 1767 /// command line options. 1768 1769 /// Less-than for GCCVersion, implementing a Strict Weak Ordering. 1770 bool Generic_GCC::GCCVersion::isOlderThan(int RHSMajor, int RHSMinor, 1771 int RHSPatch, 1772 StringRef RHSPatchSuffix) const { 1773 if (Major != RHSMajor) 1774 return Major < RHSMajor; 1775 if (Minor != RHSMinor) 1776 return Minor < RHSMinor; 1777 if (Patch != RHSPatch) { 1778 // Note that versions without a specified patch sort higher than those with 1779 // a patch. 1780 if (RHSPatch == -1) 1781 return true; 1782 if (Patch == -1) 1783 return false; 1784 1785 // Otherwise just sort on the patch itself. 1786 return Patch < RHSPatch; 1787 } 1788 if (PatchSuffix != RHSPatchSuffix) { 1789 // Sort empty suffixes higher. 1790 if (RHSPatchSuffix.empty()) 1791 return true; 1792 if (PatchSuffix.empty()) 1793 return false; 1794 1795 // Provide a lexicographic sort to make this a total ordering. 1796 return PatchSuffix < RHSPatchSuffix; 1797 } 1798 1799 // The versions are equal. 1800 return false; 1801 } 1802 1803 /// Parse a GCCVersion object out of a string of text. 1804 /// 1805 /// This is the primary means of forming GCCVersion objects. 1806 /*static*/ 1807 Generic_GCC::GCCVersion Generic_GCC::GCCVersion::Parse(StringRef VersionText) { 1808 const GCCVersion BadVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 1809 std::pair<StringRef, StringRef> First = VersionText.split('.'); 1810 std::pair<StringRef, StringRef> Second = First.second.split('.'); 1811 1812 GCCVersion GoodVersion = {VersionText.str(), -1, -1, -1, "", "", ""}; 1813 if (First.first.getAsInteger(10, GoodVersion.Major) || GoodVersion.Major < 0) 1814 return BadVersion; 1815 GoodVersion.MajorStr = First.first.str(); 1816 if (First.second.empty()) 1817 return GoodVersion; 1818 StringRef MinorStr = Second.first; 1819 if (Second.second.empty()) { 1820 if (size_t EndNumber = MinorStr.find_first_not_of("0123456789")) { 1821 GoodVersion.PatchSuffix = std::string(MinorStr.substr(EndNumber)); 1822 MinorStr = MinorStr.slice(0, EndNumber); 1823 } 1824 } 1825 if (MinorStr.getAsInteger(10, GoodVersion.Minor) || GoodVersion.Minor < 0) 1826 return BadVersion; 1827 GoodVersion.MinorStr = MinorStr.str(); 1828 1829 // First look for a number prefix and parse that if present. Otherwise just 1830 // stash the entire patch string in the suffix, and leave the number 1831 // unspecified. This covers versions strings such as: 1832 // 5 (handled above) 1833 // 4.4 1834 // 4.4-patched 1835 // 4.4.0 1836 // 4.4.x 1837 // 4.4.2-rc4 1838 // 4.4.x-patched 1839 // And retains any patch number it finds. 1840 StringRef PatchText = Second.second; 1841 if (!PatchText.empty()) { 1842 if (size_t EndNumber = PatchText.find_first_not_of("0123456789")) { 1843 // Try to parse the number and any suffix. 1844 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) || 1845 GoodVersion.Patch < 0) 1846 return BadVersion; 1847 GoodVersion.PatchSuffix = std::string(PatchText.substr(EndNumber)); 1848 } 1849 } 1850 1851 return GoodVersion; 1852 } 1853 1854 static llvm::StringRef getGCCToolchainDir(const ArgList &Args, 1855 llvm::StringRef SysRoot) { 1856 const Arg *A = Args.getLastArg(clang::driver::options::OPT_gcc_toolchain); 1857 if (A) 1858 return A->getValue(); 1859 1860 // If we have a SysRoot, ignore GCC_INSTALL_PREFIX. 1861 // GCC_INSTALL_PREFIX specifies the gcc installation for the default 1862 // sysroot and is likely not valid with a different sysroot. 1863 if (!SysRoot.empty()) 1864 return ""; 1865 1866 return GCC_INSTALL_PREFIX; 1867 } 1868 1869 /// Initialize a GCCInstallationDetector from the driver. 1870 /// 1871 /// This performs all of the autodetection and sets up the various paths. 1872 /// Once constructed, a GCCInstallationDetector is essentially immutable. 1873 /// 1874 /// FIXME: We shouldn't need an explicit TargetTriple parameter here, and 1875 /// should instead pull the target out of the driver. This is currently 1876 /// necessary because the driver doesn't store the final version of the target 1877 /// triple. 1878 void Generic_GCC::GCCInstallationDetector::init( 1879 const llvm::Triple &TargetTriple, const ArgList &Args, 1880 ArrayRef<std::string> ExtraTripleAliases) { 1881 llvm::Triple BiarchVariantTriple = TargetTriple.isArch32Bit() 1882 ? TargetTriple.get64BitArchVariant() 1883 : TargetTriple.get32BitArchVariant(); 1884 // The library directories which may contain GCC installations. 1885 SmallVector<StringRef, 4> CandidateLibDirs, CandidateBiarchLibDirs; 1886 // The compatible GCC triples for this particular architecture. 1887 SmallVector<StringRef, 16> CandidateTripleAliases; 1888 SmallVector<StringRef, 16> CandidateBiarchTripleAliases; 1889 CollectLibDirsAndTriples(TargetTriple, BiarchVariantTriple, CandidateLibDirs, 1890 CandidateTripleAliases, CandidateBiarchLibDirs, 1891 CandidateBiarchTripleAliases); 1892 1893 // Compute the set of prefixes for our search. 1894 SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(), 1895 D.PrefixDirs.end()); 1896 1897 StringRef GCCToolchainDir = getGCCToolchainDir(Args, D.SysRoot); 1898 if (GCCToolchainDir != "") { 1899 if (GCCToolchainDir.back() == '/') 1900 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the / 1901 1902 Prefixes.push_back(std::string(GCCToolchainDir)); 1903 } else { 1904 // If we have a SysRoot, try that first. 1905 if (!D.SysRoot.empty()) { 1906 Prefixes.push_back(D.SysRoot); 1907 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 1908 } 1909 1910 // Then look for gcc installed alongside clang. 1911 Prefixes.push_back(D.InstalledDir + "/.."); 1912 1913 // Next, look for prefix(es) that correspond to distribution-supplied gcc 1914 // installations. 1915 if (D.SysRoot.empty()) { 1916 // Typically /usr. 1917 AddDefaultGCCPrefixes(TargetTriple, Prefixes, D.SysRoot); 1918 } 1919 } 1920 1921 // Try to respect gcc-config on Gentoo. However, do that only 1922 // if --gcc-toolchain is not provided or equal to the Gentoo install 1923 // in /usr. This avoids accidentally enforcing the system GCC version 1924 // when using a custom toolchain. 1925 if (GCCToolchainDir == "" || GCCToolchainDir == D.SysRoot + "/usr") { 1926 SmallVector<StringRef, 16> GentooTestTriples; 1927 // Try to match an exact triple as target triple first. 1928 // e.g. crossdev -S x86_64-gentoo-linux-gnu will install gcc libs for 1929 // x86_64-gentoo-linux-gnu. But "clang -target x86_64-gentoo-linux-gnu" 1930 // may pick the libraries for x86_64-pc-linux-gnu even when exact matching 1931 // triple x86_64-gentoo-linux-gnu is present. 1932 GentooTestTriples.push_back(TargetTriple.str()); 1933 // Check rest of triples. 1934 GentooTestTriples.append(ExtraTripleAliases.begin(), 1935 ExtraTripleAliases.end()); 1936 GentooTestTriples.append(CandidateTripleAliases.begin(), 1937 CandidateTripleAliases.end()); 1938 if (ScanGentooConfigs(TargetTriple, Args, GentooTestTriples, 1939 CandidateBiarchTripleAliases)) 1940 return; 1941 } 1942 1943 // Loop over the various components which exist and select the best GCC 1944 // installation available. GCC installs are ranked by version number. 1945 Version = GCCVersion::Parse("0.0.0"); 1946 for (const std::string &Prefix : Prefixes) { 1947 if (!D.getVFS().exists(Prefix)) 1948 continue; 1949 for (StringRef Suffix : CandidateLibDirs) { 1950 const std::string LibDir = Prefix + Suffix.str(); 1951 if (!D.getVFS().exists(LibDir)) 1952 continue; 1953 // Try to match the exact target triple first. 1954 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, TargetTriple.str()); 1955 // Try rest of possible triples. 1956 for (StringRef Candidate : ExtraTripleAliases) // Try these first. 1957 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate); 1958 for (StringRef Candidate : CandidateTripleAliases) 1959 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate); 1960 } 1961 for (StringRef Suffix : CandidateBiarchLibDirs) { 1962 const std::string LibDir = Prefix + Suffix.str(); 1963 if (!D.getVFS().exists(LibDir)) 1964 continue; 1965 for (StringRef Candidate : CandidateBiarchTripleAliases) 1966 ScanLibDirForGCCTriple(TargetTriple, Args, LibDir, Candidate, 1967 /*NeedsBiarchSuffix=*/ true); 1968 } 1969 } 1970 } 1971 1972 void Generic_GCC::GCCInstallationDetector::print(raw_ostream &OS) const { 1973 for (const auto &InstallPath : CandidateGCCInstallPaths) 1974 OS << "Found candidate GCC installation: " << InstallPath << "\n"; 1975 1976 if (!GCCInstallPath.empty()) 1977 OS << "Selected GCC installation: " << GCCInstallPath << "\n"; 1978 1979 for (const auto &Multilib : Multilibs) 1980 OS << "Candidate multilib: " << Multilib << "\n"; 1981 1982 if (Multilibs.size() != 0 || !SelectedMultilib.isDefault()) 1983 OS << "Selected multilib: " << SelectedMultilib << "\n"; 1984 } 1985 1986 bool Generic_GCC::GCCInstallationDetector::getBiarchSibling(Multilib &M) const { 1987 if (BiarchSibling.hasValue()) { 1988 M = BiarchSibling.getValue(); 1989 return true; 1990 } 1991 return false; 1992 } 1993 1994 void Generic_GCC::GCCInstallationDetector::AddDefaultGCCPrefixes( 1995 const llvm::Triple &TargetTriple, SmallVectorImpl<std::string> &Prefixes, 1996 StringRef SysRoot) { 1997 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 1998 // Solaris is a special case. 1999 // The GCC installation is under 2000 // /usr/gcc/<major>.<minor>/lib/gcc/<triple>/<major>.<minor>.<patch>/ 2001 // so we need to find those /usr/gcc/*/lib/gcc libdirs and go with 2002 // /usr/gcc/<version> as a prefix. 2003 2004 std::string PrefixDir = SysRoot.str() + "/usr/gcc"; 2005 std::error_code EC; 2006 for (llvm::vfs::directory_iterator LI = D.getVFS().dir_begin(PrefixDir, EC), 2007 LE; 2008 !EC && LI != LE; LI = LI.increment(EC)) { 2009 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2010 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 2011 2012 // Filter out obviously bad entries. 2013 if (CandidateVersion.Major == -1 || CandidateVersion.isOlderThan(4, 1, 1)) 2014 continue; 2015 2016 std::string CandidatePrefix = PrefixDir + "/" + VersionText.str(); 2017 std::string CandidateLibPath = CandidatePrefix + "/lib/gcc"; 2018 if (!D.getVFS().exists(CandidateLibPath)) 2019 continue; 2020 2021 Prefixes.push_back(CandidatePrefix); 2022 } 2023 return; 2024 } 2025 2026 // Non-Solaris is much simpler - most systems just go with "/usr". 2027 if (SysRoot.empty() && TargetTriple.getOS() == llvm::Triple::Linux) { 2028 // Yet, still look for RHEL devtoolsets. 2029 Prefixes.push_back("/opt/rh/devtoolset-9/root/usr"); 2030 Prefixes.push_back("/opt/rh/devtoolset-8/root/usr"); 2031 Prefixes.push_back("/opt/rh/devtoolset-7/root/usr"); 2032 Prefixes.push_back("/opt/rh/devtoolset-6/root/usr"); 2033 Prefixes.push_back("/opt/rh/devtoolset-4/root/usr"); 2034 Prefixes.push_back("/opt/rh/devtoolset-3/root/usr"); 2035 Prefixes.push_back("/opt/rh/devtoolset-2/root/usr"); 2036 } 2037 Prefixes.push_back(SysRoot.str() + "/usr"); 2038 } 2039 2040 /*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples( 2041 const llvm::Triple &TargetTriple, const llvm::Triple &BiarchTriple, 2042 SmallVectorImpl<StringRef> &LibDirs, 2043 SmallVectorImpl<StringRef> &TripleAliases, 2044 SmallVectorImpl<StringRef> &BiarchLibDirs, 2045 SmallVectorImpl<StringRef> &BiarchTripleAliases) { 2046 // Declare a bunch of static data sets that we'll select between below. These 2047 // are specifically designed to always refer to string literals to avoid any 2048 // lifetime or initialization issues. 2049 static const char *const AArch64LibDirs[] = {"/lib64", "/lib"}; 2050 static const char *const AArch64Triples[] = { 2051 "aarch64-none-linux-gnu", "aarch64-linux-gnu", "aarch64-redhat-linux", 2052 "aarch64-suse-linux", "aarch64-linux-android"}; 2053 static const char *const AArch64beLibDirs[] = {"/lib"}; 2054 static const char *const AArch64beTriples[] = {"aarch64_be-none-linux-gnu", 2055 "aarch64_be-linux-gnu"}; 2056 2057 static const char *const ARMLibDirs[] = {"/lib"}; 2058 static const char *const ARMTriples[] = {"arm-linux-gnueabi", 2059 "arm-linux-androideabi"}; 2060 static const char *const ARMHFTriples[] = {"arm-linux-gnueabihf", 2061 "armv7hl-redhat-linux-gnueabi", 2062 "armv6hl-suse-linux-gnueabi", 2063 "armv7hl-suse-linux-gnueabi"}; 2064 static const char *const ARMebLibDirs[] = {"/lib"}; 2065 static const char *const ARMebTriples[] = {"armeb-linux-gnueabi", 2066 "armeb-linux-androideabi"}; 2067 static const char *const ARMebHFTriples[] = { 2068 "armeb-linux-gnueabihf", "armebv7hl-redhat-linux-gnueabi"}; 2069 2070 static const char *const AVRLibDirs[] = {"/lib"}; 2071 static const char *const AVRTriples[] = {"avr"}; 2072 2073 static const char *const X86_64LibDirs[] = {"/lib64", "/lib"}; 2074 static const char *const X86_64Triples[] = { 2075 "x86_64-linux-gnu", "x86_64-unknown-linux-gnu", 2076 "x86_64-pc-linux-gnu", "x86_64-redhat-linux6E", 2077 "x86_64-redhat-linux", "x86_64-suse-linux", 2078 "x86_64-manbo-linux-gnu", "x86_64-linux-gnu", 2079 "x86_64-slackware-linux", "x86_64-unknown-linux", 2080 "x86_64-amazon-linux", "x86_64-linux-android"}; 2081 static const char *const X32LibDirs[] = {"/libx32"}; 2082 static const char *const X86LibDirs[] = {"/lib32", "/lib"}; 2083 static const char *const X86Triples[] = { 2084 "i686-linux-gnu", "i686-pc-linux-gnu", "i486-linux-gnu", 2085 "i386-linux-gnu", "i386-redhat-linux6E", "i686-redhat-linux", 2086 "i586-redhat-linux", "i386-redhat-linux", "i586-suse-linux", 2087 "i486-slackware-linux", "i686-montavista-linux", "i586-linux-gnu", 2088 "i686-linux-android", "i386-gnu", "i486-gnu", 2089 "i586-gnu", "i686-gnu"}; 2090 2091 static const char *const MIPSLibDirs[] = {"/lib"}; 2092 static const char *const MIPSTriples[] = { 2093 "mips-linux-gnu", "mips-mti-linux", "mips-mti-linux-gnu", 2094 "mips-img-linux-gnu", "mipsisa32r6-linux-gnu"}; 2095 static const char *const MIPSELLibDirs[] = {"/lib"}; 2096 static const char *const MIPSELTriples[] = { 2097 "mipsel-linux-gnu", "mips-img-linux-gnu", "mipsisa32r6el-linux-gnu", 2098 "mipsel-linux-android"}; 2099 2100 static const char *const MIPS64LibDirs[] = {"/lib64", "/lib"}; 2101 static const char *const MIPS64Triples[] = { 2102 "mips64-linux-gnu", "mips-mti-linux-gnu", 2103 "mips-img-linux-gnu", "mips64-linux-gnuabi64", 2104 "mipsisa64r6-linux-gnu", "mipsisa64r6-linux-gnuabi64"}; 2105 static const char *const MIPS64ELLibDirs[] = {"/lib64", "/lib"}; 2106 static const char *const MIPS64ELTriples[] = { 2107 "mips64el-linux-gnu", "mips-mti-linux-gnu", 2108 "mips-img-linux-gnu", "mips64el-linux-gnuabi64", 2109 "mipsisa64r6el-linux-gnu", "mipsisa64r6el-linux-gnuabi64", 2110 "mips64el-linux-android"}; 2111 2112 static const char *const MIPSN32LibDirs[] = {"/lib32"}; 2113 static const char *const MIPSN32Triples[] = {"mips64-linux-gnuabin32", 2114 "mipsisa64r6-linux-gnuabin32"}; 2115 static const char *const MIPSN32ELLibDirs[] = {"/lib32"}; 2116 static const char *const MIPSN32ELTriples[] = { 2117 "mips64el-linux-gnuabin32", "mipsisa64r6el-linux-gnuabin32"}; 2118 2119 static const char *const MSP430LibDirs[] = {"/lib"}; 2120 static const char *const MSP430Triples[] = {"msp430-elf"}; 2121 2122 static const char *const PPCLibDirs[] = {"/lib32", "/lib"}; 2123 static const char *const PPCTriples[] = { 2124 "powerpc-linux-gnu", "powerpc-unknown-linux-gnu", "powerpc-linux-gnuspe", 2125 // On 32-bit PowerPC systems running SUSE Linux, gcc is configured as a 2126 // 64-bit compiler which defaults to "-m32", hence "powerpc64-suse-linux". 2127 "powerpc64-suse-linux", "powerpc-montavista-linuxspe"}; 2128 static const char *const PPC64LibDirs[] = {"/lib64", "/lib"}; 2129 static const char *const PPC64Triples[] = { 2130 "powerpc64-linux-gnu", "powerpc64-unknown-linux-gnu", 2131 "powerpc64-suse-linux", "ppc64-redhat-linux"}; 2132 static const char *const PPC64LELibDirs[] = {"/lib64", "/lib"}; 2133 static const char *const PPC64LETriples[] = { 2134 "powerpc64le-linux-gnu", "powerpc64le-unknown-linux-gnu", 2135 "powerpc64le-suse-linux", "ppc64le-redhat-linux"}; 2136 2137 static const char *const RISCV32LibDirs[] = {"/lib32", "/lib"}; 2138 static const char *const RISCV32Triples[] = {"riscv32-unknown-linux-gnu", 2139 "riscv32-linux-gnu", 2140 "riscv32-unknown-elf"}; 2141 static const char *const RISCV64LibDirs[] = {"/lib64", "/lib"}; 2142 static const char *const RISCV64Triples[] = {"riscv64-unknown-linux-gnu", 2143 "riscv64-linux-gnu", 2144 "riscv64-unknown-elf", 2145 "riscv64-redhat-linux", 2146 "riscv64-suse-linux"}; 2147 2148 static const char *const SPARCv8LibDirs[] = {"/lib32", "/lib"}; 2149 static const char *const SPARCv8Triples[] = {"sparc-linux-gnu", 2150 "sparcv8-linux-gnu"}; 2151 static const char *const SPARCv9LibDirs[] = {"/lib64", "/lib"}; 2152 static const char *const SPARCv9Triples[] = {"sparc64-linux-gnu", 2153 "sparcv9-linux-gnu"}; 2154 2155 static const char *const SystemZLibDirs[] = {"/lib64", "/lib"}; 2156 static const char *const SystemZTriples[] = { 2157 "s390x-linux-gnu", "s390x-unknown-linux-gnu", "s390x-ibm-linux-gnu", 2158 "s390x-suse-linux", "s390x-redhat-linux"}; 2159 2160 2161 using std::begin; 2162 using std::end; 2163 2164 if (TargetTriple.getOS() == llvm::Triple::Solaris) { 2165 static const char *const SolarisLibDirs[] = {"/lib"}; 2166 static const char *const SolarisSparcV8Triples[] = { 2167 "sparc-sun-solaris2.11", "sparc-sun-solaris2.12"}; 2168 static const char *const SolarisSparcV9Triples[] = { 2169 "sparcv9-sun-solaris2.11", "sparcv9-sun-solaris2.12"}; 2170 static const char *const SolarisX86Triples[] = {"i386-pc-solaris2.11", 2171 "i386-pc-solaris2.12"}; 2172 static const char *const SolarisX86_64Triples[] = {"x86_64-pc-solaris2.11", 2173 "x86_64-pc-solaris2.12"}; 2174 LibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 2175 BiarchLibDirs.append(begin(SolarisLibDirs), end(SolarisLibDirs)); 2176 switch (TargetTriple.getArch()) { 2177 case llvm::Triple::x86: 2178 TripleAliases.append(begin(SolarisX86Triples), end(SolarisX86Triples)); 2179 BiarchTripleAliases.append(begin(SolarisX86_64Triples), 2180 end(SolarisX86_64Triples)); 2181 break; 2182 case llvm::Triple::x86_64: 2183 TripleAliases.append(begin(SolarisX86_64Triples), 2184 end(SolarisX86_64Triples)); 2185 BiarchTripleAliases.append(begin(SolarisX86Triples), 2186 end(SolarisX86Triples)); 2187 break; 2188 case llvm::Triple::sparc: 2189 TripleAliases.append(begin(SolarisSparcV8Triples), 2190 end(SolarisSparcV8Triples)); 2191 BiarchTripleAliases.append(begin(SolarisSparcV9Triples), 2192 end(SolarisSparcV9Triples)); 2193 break; 2194 case llvm::Triple::sparcv9: 2195 TripleAliases.append(begin(SolarisSparcV9Triples), 2196 end(SolarisSparcV9Triples)); 2197 BiarchTripleAliases.append(begin(SolarisSparcV8Triples), 2198 end(SolarisSparcV8Triples)); 2199 break; 2200 default: 2201 break; 2202 } 2203 return; 2204 } 2205 2206 // Android targets should not use GNU/Linux tools or libraries. 2207 if (TargetTriple.isAndroid()) { 2208 static const char *const AArch64AndroidTriples[] = { 2209 "aarch64-linux-android"}; 2210 static const char *const ARMAndroidTriples[] = {"arm-linux-androideabi"}; 2211 static const char *const MIPSELAndroidTriples[] = {"mipsel-linux-android"}; 2212 static const char *const MIPS64ELAndroidTriples[] = { 2213 "mips64el-linux-android"}; 2214 static const char *const X86AndroidTriples[] = {"i686-linux-android"}; 2215 static const char *const X86_64AndroidTriples[] = {"x86_64-linux-android"}; 2216 2217 switch (TargetTriple.getArch()) { 2218 case llvm::Triple::aarch64: 2219 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2220 TripleAliases.append(begin(AArch64AndroidTriples), 2221 end(AArch64AndroidTriples)); 2222 break; 2223 case llvm::Triple::arm: 2224 case llvm::Triple::thumb: 2225 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2226 TripleAliases.append(begin(ARMAndroidTriples), end(ARMAndroidTriples)); 2227 break; 2228 case llvm::Triple::mipsel: 2229 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2230 TripleAliases.append(begin(MIPSELAndroidTriples), 2231 end(MIPSELAndroidTriples)); 2232 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2233 BiarchTripleAliases.append(begin(MIPS64ELAndroidTriples), 2234 end(MIPS64ELAndroidTriples)); 2235 break; 2236 case llvm::Triple::mips64el: 2237 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2238 TripleAliases.append(begin(MIPS64ELAndroidTriples), 2239 end(MIPS64ELAndroidTriples)); 2240 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2241 BiarchTripleAliases.append(begin(MIPSELAndroidTriples), 2242 end(MIPSELAndroidTriples)); 2243 break; 2244 case llvm::Triple::x86_64: 2245 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2246 TripleAliases.append(begin(X86_64AndroidTriples), 2247 end(X86_64AndroidTriples)); 2248 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2249 BiarchTripleAliases.append(begin(X86AndroidTriples), 2250 end(X86AndroidTriples)); 2251 break; 2252 case llvm::Triple::x86: 2253 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2254 TripleAliases.append(begin(X86AndroidTriples), end(X86AndroidTriples)); 2255 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2256 BiarchTripleAliases.append(begin(X86_64AndroidTriples), 2257 end(X86_64AndroidTriples)); 2258 break; 2259 default: 2260 break; 2261 } 2262 2263 return; 2264 } 2265 2266 switch (TargetTriple.getArch()) { 2267 case llvm::Triple::aarch64: 2268 LibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2269 TripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2270 BiarchLibDirs.append(begin(AArch64LibDirs), end(AArch64LibDirs)); 2271 BiarchTripleAliases.append(begin(AArch64Triples), end(AArch64Triples)); 2272 break; 2273 case llvm::Triple::aarch64_be: 2274 LibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2275 TripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2276 BiarchLibDirs.append(begin(AArch64beLibDirs), end(AArch64beLibDirs)); 2277 BiarchTripleAliases.append(begin(AArch64beTriples), end(AArch64beTriples)); 2278 break; 2279 case llvm::Triple::arm: 2280 case llvm::Triple::thumb: 2281 LibDirs.append(begin(ARMLibDirs), end(ARMLibDirs)); 2282 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2283 TripleAliases.append(begin(ARMHFTriples), end(ARMHFTriples)); 2284 } else { 2285 TripleAliases.append(begin(ARMTriples), end(ARMTriples)); 2286 } 2287 break; 2288 case llvm::Triple::armeb: 2289 case llvm::Triple::thumbeb: 2290 LibDirs.append(begin(ARMebLibDirs), end(ARMebLibDirs)); 2291 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2292 TripleAliases.append(begin(ARMebHFTriples), end(ARMebHFTriples)); 2293 } else { 2294 TripleAliases.append(begin(ARMebTriples), end(ARMebTriples)); 2295 } 2296 break; 2297 case llvm::Triple::avr: 2298 LibDirs.append(begin(AVRLibDirs), end(AVRLibDirs)); 2299 TripleAliases.append(begin(AVRTriples), end(AVRTriples)); 2300 break; 2301 case llvm::Triple::x86_64: 2302 LibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2303 TripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2304 // x32 is always available when x86_64 is available, so adding it as 2305 // secondary arch with x86_64 triples 2306 if (TargetTriple.getEnvironment() == llvm::Triple::GNUX32) { 2307 BiarchLibDirs.append(begin(X32LibDirs), end(X32LibDirs)); 2308 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2309 } else { 2310 BiarchLibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2311 BiarchTripleAliases.append(begin(X86Triples), end(X86Triples)); 2312 } 2313 break; 2314 case llvm::Triple::x86: 2315 LibDirs.append(begin(X86LibDirs), end(X86LibDirs)); 2316 // MCU toolchain is 32 bit only and its triple alias is TargetTriple 2317 // itself, which will be appended below. 2318 if (!TargetTriple.isOSIAMCU()) { 2319 TripleAliases.append(begin(X86Triples), end(X86Triples)); 2320 BiarchLibDirs.append(begin(X86_64LibDirs), end(X86_64LibDirs)); 2321 BiarchTripleAliases.append(begin(X86_64Triples), end(X86_64Triples)); 2322 } 2323 break; 2324 case llvm::Triple::mips: 2325 LibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2326 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2327 BiarchLibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2328 BiarchTripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2329 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs)); 2330 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples)); 2331 break; 2332 case llvm::Triple::mipsel: 2333 LibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2334 TripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2335 TripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2336 BiarchLibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2337 BiarchTripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2338 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs)); 2339 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples)); 2340 break; 2341 case llvm::Triple::mips64: 2342 LibDirs.append(begin(MIPS64LibDirs), end(MIPS64LibDirs)); 2343 TripleAliases.append(begin(MIPS64Triples), end(MIPS64Triples)); 2344 BiarchLibDirs.append(begin(MIPSLibDirs), end(MIPSLibDirs)); 2345 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2346 BiarchLibDirs.append(begin(MIPSN32LibDirs), end(MIPSN32LibDirs)); 2347 BiarchTripleAliases.append(begin(MIPSN32Triples), end(MIPSN32Triples)); 2348 break; 2349 case llvm::Triple::mips64el: 2350 LibDirs.append(begin(MIPS64ELLibDirs), end(MIPS64ELLibDirs)); 2351 TripleAliases.append(begin(MIPS64ELTriples), end(MIPS64ELTriples)); 2352 BiarchLibDirs.append(begin(MIPSELLibDirs), end(MIPSELLibDirs)); 2353 BiarchTripleAliases.append(begin(MIPSELTriples), end(MIPSELTriples)); 2354 BiarchLibDirs.append(begin(MIPSN32ELLibDirs), end(MIPSN32ELLibDirs)); 2355 BiarchTripleAliases.append(begin(MIPSN32ELTriples), end(MIPSN32ELTriples)); 2356 BiarchTripleAliases.append(begin(MIPSTriples), end(MIPSTriples)); 2357 break; 2358 case llvm::Triple::msp430: 2359 LibDirs.append(begin(MSP430LibDirs), end(MSP430LibDirs)); 2360 TripleAliases.append(begin(MSP430Triples), end(MSP430Triples)); 2361 break; 2362 case llvm::Triple::ppc: 2363 LibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2364 TripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2365 BiarchLibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2366 BiarchTripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2367 break; 2368 case llvm::Triple::ppc64: 2369 LibDirs.append(begin(PPC64LibDirs), end(PPC64LibDirs)); 2370 TripleAliases.append(begin(PPC64Triples), end(PPC64Triples)); 2371 BiarchLibDirs.append(begin(PPCLibDirs), end(PPCLibDirs)); 2372 BiarchTripleAliases.append(begin(PPCTriples), end(PPCTriples)); 2373 break; 2374 case llvm::Triple::ppc64le: 2375 LibDirs.append(begin(PPC64LELibDirs), end(PPC64LELibDirs)); 2376 TripleAliases.append(begin(PPC64LETriples), end(PPC64LETriples)); 2377 break; 2378 case llvm::Triple::riscv32: 2379 LibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2380 TripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples)); 2381 BiarchLibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs)); 2382 BiarchTripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples)); 2383 break; 2384 case llvm::Triple::riscv64: 2385 LibDirs.append(begin(RISCV64LibDirs), end(RISCV64LibDirs)); 2386 TripleAliases.append(begin(RISCV64Triples), end(RISCV64Triples)); 2387 BiarchLibDirs.append(begin(RISCV32LibDirs), end(RISCV32LibDirs)); 2388 BiarchTripleAliases.append(begin(RISCV32Triples), end(RISCV32Triples)); 2389 break; 2390 case llvm::Triple::sparc: 2391 case llvm::Triple::sparcel: 2392 LibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2393 TripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2394 BiarchLibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2395 BiarchTripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2396 break; 2397 case llvm::Triple::sparcv9: 2398 LibDirs.append(begin(SPARCv9LibDirs), end(SPARCv9LibDirs)); 2399 TripleAliases.append(begin(SPARCv9Triples), end(SPARCv9Triples)); 2400 BiarchLibDirs.append(begin(SPARCv8LibDirs), end(SPARCv8LibDirs)); 2401 BiarchTripleAliases.append(begin(SPARCv8Triples), end(SPARCv8Triples)); 2402 break; 2403 case llvm::Triple::systemz: 2404 LibDirs.append(begin(SystemZLibDirs), end(SystemZLibDirs)); 2405 TripleAliases.append(begin(SystemZTriples), end(SystemZTriples)); 2406 break; 2407 default: 2408 // By default, just rely on the standard lib directories and the original 2409 // triple. 2410 break; 2411 } 2412 2413 // Always append the drivers target triple to the end, in case it doesn't 2414 // match any of our aliases. 2415 TripleAliases.push_back(TargetTriple.str()); 2416 2417 // Also include the multiarch variant if it's different. 2418 if (TargetTriple.str() != BiarchTriple.str()) 2419 BiarchTripleAliases.push_back(BiarchTriple.str()); 2420 } 2421 2422 bool Generic_GCC::GCCInstallationDetector::ScanGCCForMultilibs( 2423 const llvm::Triple &TargetTriple, const ArgList &Args, 2424 StringRef Path, bool NeedsBiarchSuffix) { 2425 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 2426 DetectedMultilibs Detected; 2427 2428 // Android standalone toolchain could have multilibs for ARM and Thumb. 2429 // Debian mips multilibs behave more like the rest of the biarch ones, 2430 // so handle them there 2431 if (isArmOrThumbArch(TargetArch) && TargetTriple.isAndroid()) { 2432 // It should also work without multilibs in a simplified toolchain. 2433 findAndroidArmMultilibs(D, TargetTriple, Path, Args, Detected); 2434 } else if (TargetTriple.isMIPS()) { 2435 if (!findMIPSMultilibs(D, TargetTriple, Path, Args, Detected)) 2436 return false; 2437 } else if (TargetTriple.isRISCV()) { 2438 findRISCVMultilibs(D, TargetTriple, Path, Args, Detected); 2439 } else if (isMSP430(TargetArch)) { 2440 findMSP430Multilibs(D, TargetTriple, Path, Args, Detected); 2441 } else if (TargetArch == llvm::Triple::avr) { 2442 // AVR has no multilibs. 2443 } else if (!findBiarchMultilibs(D, TargetTriple, Path, Args, 2444 NeedsBiarchSuffix, Detected)) { 2445 return false; 2446 } 2447 2448 Multilibs = Detected.Multilibs; 2449 SelectedMultilib = Detected.SelectedMultilib; 2450 BiarchSibling = Detected.BiarchSibling; 2451 2452 return true; 2453 } 2454 2455 void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple( 2456 const llvm::Triple &TargetTriple, const ArgList &Args, 2457 const std::string &LibDir, StringRef CandidateTriple, 2458 bool NeedsBiarchSuffix) { 2459 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 2460 // Locations relative to the system lib directory where GCC's triple-specific 2461 // directories might reside. 2462 struct GCCLibSuffix { 2463 // Path from system lib directory to GCC triple-specific directory. 2464 std::string LibSuffix; 2465 // Path from GCC triple-specific directory back to system lib directory. 2466 // This is one '..' component per component in LibSuffix. 2467 StringRef ReversePath; 2468 // Whether this library suffix is relevant for the triple. 2469 bool Active; 2470 } Suffixes[] = { 2471 // This is the normal place. 2472 {"gcc/" + CandidateTriple.str(), "../..", true}, 2473 2474 // Debian puts cross-compilers in gcc-cross. 2475 {"gcc-cross/" + CandidateTriple.str(), "../..", 2476 TargetTriple.getOS() != llvm::Triple::Solaris}, 2477 2478 // The Freescale PPC SDK has the gcc libraries in 2479 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. Only do 2480 // this on Freescale triples, though, since some systems put a *lot* of 2481 // files in that location, not just GCC installation data. 2482 {CandidateTriple.str(), "..", 2483 TargetTriple.getVendor() == llvm::Triple::Freescale || 2484 TargetTriple.getVendor() == llvm::Triple::OpenEmbedded}, 2485 2486 // Natively multiarch systems sometimes put the GCC triple-specific 2487 // directory within their multiarch lib directory, resulting in the 2488 // triple appearing twice. 2489 {CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), "../../..", 2490 TargetTriple.getOS() != llvm::Triple::Solaris}, 2491 2492 // Deal with cases (on Ubuntu) where the system architecture could be i386 2493 // but the GCC target architecture could be (say) i686. 2494 // FIXME: It may be worthwhile to generalize this and look for a second 2495 // triple. 2496 {"i386-linux-gnu/gcc/" + CandidateTriple.str(), "../../..", 2497 (TargetArch == llvm::Triple::x86 && 2498 TargetTriple.getOS() != llvm::Triple::Solaris)}, 2499 {"i386-gnu/gcc/" + CandidateTriple.str(), "../../..", 2500 (TargetArch == llvm::Triple::x86 && 2501 TargetTriple.getOS() != llvm::Triple::Solaris)}}; 2502 2503 for (auto &Suffix : Suffixes) { 2504 if (!Suffix.Active) 2505 continue; 2506 2507 StringRef LibSuffix = Suffix.LibSuffix; 2508 std::error_code EC; 2509 for (llvm::vfs::directory_iterator 2510 LI = D.getVFS().dir_begin(LibDir + "/" + LibSuffix, EC), 2511 LE; 2512 !EC && LI != LE; LI = LI.increment(EC)) { 2513 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2514 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 2515 if (CandidateVersion.Major != -1) // Filter obviously bad entries. 2516 if (!CandidateGCCInstallPaths.insert(std::string(LI->path())).second) 2517 continue; // Saw this path before; no need to look at it again. 2518 if (CandidateVersion.isOlderThan(4, 1, 1)) 2519 continue; 2520 if (CandidateVersion <= Version) 2521 continue; 2522 2523 if (!ScanGCCForMultilibs(TargetTriple, Args, LI->path(), 2524 NeedsBiarchSuffix)) 2525 continue; 2526 2527 Version = CandidateVersion; 2528 GCCTriple.setTriple(CandidateTriple); 2529 // FIXME: We hack together the directory name here instead of 2530 // using LI to ensure stable path separators across Windows and 2531 // Linux. 2532 GCCInstallPath = (LibDir + "/" + LibSuffix + "/" + VersionText).str(); 2533 GCCParentLibPath = (GCCInstallPath + "/../" + Suffix.ReversePath).str(); 2534 IsValid = true; 2535 } 2536 } 2537 } 2538 2539 bool Generic_GCC::GCCInstallationDetector::ScanGentooConfigs( 2540 const llvm::Triple &TargetTriple, const ArgList &Args, 2541 const SmallVectorImpl<StringRef> &CandidateTriples, 2542 const SmallVectorImpl<StringRef> &CandidateBiarchTriples) { 2543 for (StringRef CandidateTriple : CandidateTriples) { 2544 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple)) 2545 return true; 2546 } 2547 2548 for (StringRef CandidateTriple : CandidateBiarchTriples) { 2549 if (ScanGentooGccConfig(TargetTriple, Args, CandidateTriple, true)) 2550 return true; 2551 } 2552 return false; 2553 } 2554 2555 bool Generic_GCC::GCCInstallationDetector::ScanGentooGccConfig( 2556 const llvm::Triple &TargetTriple, const ArgList &Args, 2557 StringRef CandidateTriple, bool NeedsBiarchSuffix) { 2558 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File = 2559 D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/config-" + 2560 CandidateTriple.str()); 2561 if (File) { 2562 SmallVector<StringRef, 2> Lines; 2563 File.get()->getBuffer().split(Lines, "\n"); 2564 for (StringRef Line : Lines) { 2565 Line = Line.trim(); 2566 // CURRENT=triple-version 2567 if (!Line.consume_front("CURRENT=")) 2568 continue; 2569 // Process the config file pointed to by CURRENT. 2570 llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> ConfigFile = 2571 D.getVFS().getBufferForFile(D.SysRoot + "/etc/env.d/gcc/" + 2572 Line.str()); 2573 std::pair<StringRef, StringRef> ActiveVersion = Line.rsplit('-'); 2574 // List of paths to scan for libraries. 2575 SmallVector<StringRef, 4> GentooScanPaths; 2576 // Scan the Config file to find installed GCC libraries path. 2577 // Typical content of the GCC config file: 2578 // LDPATH="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x:/usr/lib/gcc/ 2579 // (continued from previous line) x86_64-pc-linux-gnu/4.9.x/32" 2580 // MANPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/man" 2581 // INFOPATH="/usr/share/gcc-data/x86_64-pc-linux-gnu/4.9.x/info" 2582 // STDCXX_INCDIR="/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.x/include/g++-v4" 2583 // We are looking for the paths listed in LDPATH=... . 2584 if (ConfigFile) { 2585 SmallVector<StringRef, 2> ConfigLines; 2586 ConfigFile.get()->getBuffer().split(ConfigLines, "\n"); 2587 for (StringRef ConfLine : ConfigLines) { 2588 ConfLine = ConfLine.trim(); 2589 if (ConfLine.consume_front("LDPATH=")) { 2590 // Drop '"' from front and back if present. 2591 ConfLine.consume_back("\""); 2592 ConfLine.consume_front("\""); 2593 // Get all paths sperated by ':' 2594 ConfLine.split(GentooScanPaths, ':', -1, /*AllowEmpty*/ false); 2595 } 2596 } 2597 } 2598 // Test the path based on the version in /etc/env.d/gcc/config-{tuple}. 2599 std::string basePath = "/usr/lib/gcc/" + ActiveVersion.first.str() + "/" 2600 + ActiveVersion.second.str(); 2601 GentooScanPaths.push_back(StringRef(basePath)); 2602 2603 // Scan all paths for GCC libraries. 2604 for (const auto &GentooScanPath : GentooScanPaths) { 2605 std::string GentooPath = D.SysRoot + std::string(GentooScanPath); 2606 if (D.getVFS().exists(GentooPath + "/crtbegin.o")) { 2607 if (!ScanGCCForMultilibs(TargetTriple, Args, GentooPath, 2608 NeedsBiarchSuffix)) 2609 continue; 2610 2611 Version = GCCVersion::Parse(ActiveVersion.second); 2612 GCCInstallPath = GentooPath; 2613 GCCParentLibPath = GentooPath + std::string("/../../.."); 2614 GCCTriple.setTriple(ActiveVersion.first); 2615 IsValid = true; 2616 return true; 2617 } 2618 } 2619 } 2620 } 2621 2622 return false; 2623 } 2624 2625 Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple &Triple, 2626 const ArgList &Args) 2627 : ToolChain(D, Triple, Args), GCCInstallation(D), 2628 CudaInstallation(D, Triple, Args), RocmInstallation(D, Triple, Args) { 2629 getProgramPaths().push_back(getDriver().getInstalledDir()); 2630 if (getDriver().getInstalledDir() != getDriver().Dir) 2631 getProgramPaths().push_back(getDriver().Dir); 2632 } 2633 2634 Generic_GCC::~Generic_GCC() {} 2635 2636 Tool *Generic_GCC::getTool(Action::ActionClass AC) const { 2637 switch (AC) { 2638 case Action::PreprocessJobClass: 2639 if (!Preprocess) 2640 Preprocess.reset(new clang::driver::tools::gcc::Preprocessor(*this)); 2641 return Preprocess.get(); 2642 case Action::CompileJobClass: 2643 if (!Compile) 2644 Compile.reset(new tools::gcc::Compiler(*this)); 2645 return Compile.get(); 2646 default: 2647 return ToolChain::getTool(AC); 2648 } 2649 } 2650 2651 Tool *Generic_GCC::buildAssembler() const { 2652 return new tools::gnutools::Assembler(*this); 2653 } 2654 2655 Tool *Generic_GCC::buildLinker() const { return new tools::gcc::Linker(*this); } 2656 2657 void Generic_GCC::printVerboseInfo(raw_ostream &OS) const { 2658 // Print the information about how we detected the GCC installation. 2659 GCCInstallation.print(OS); 2660 CudaInstallation.print(OS); 2661 RocmInstallation.print(OS); 2662 } 2663 2664 bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const { 2665 return getArch() == llvm::Triple::x86_64; 2666 } 2667 2668 bool Generic_GCC::isPICDefault() const { 2669 switch (getArch()) { 2670 case llvm::Triple::x86_64: 2671 return getTriple().isOSWindows(); 2672 case llvm::Triple::mips64: 2673 case llvm::Triple::mips64el: 2674 return true; 2675 default: 2676 return false; 2677 } 2678 } 2679 2680 bool Generic_GCC::isPIEDefault() const { return false; } 2681 2682 bool Generic_GCC::isPICDefaultForced() const { 2683 return getArch() == llvm::Triple::x86_64 && getTriple().isOSWindows(); 2684 } 2685 2686 bool Generic_GCC::IsIntegratedAssemblerDefault() const { 2687 switch (getTriple().getArch()) { 2688 case llvm::Triple::x86: 2689 case llvm::Triple::x86_64: 2690 case llvm::Triple::aarch64: 2691 case llvm::Triple::aarch64_be: 2692 case llvm::Triple::arm: 2693 case llvm::Triple::armeb: 2694 case llvm::Triple::avr: 2695 case llvm::Triple::bpfel: 2696 case llvm::Triple::bpfeb: 2697 case llvm::Triple::thumb: 2698 case llvm::Triple::thumbeb: 2699 case llvm::Triple::ppc: 2700 case llvm::Triple::ppc64: 2701 case llvm::Triple::ppc64le: 2702 case llvm::Triple::riscv32: 2703 case llvm::Triple::riscv64: 2704 case llvm::Triple::systemz: 2705 case llvm::Triple::mips: 2706 case llvm::Triple::mipsel: 2707 case llvm::Triple::mips64: 2708 case llvm::Triple::mips64el: 2709 case llvm::Triple::msp430: 2710 return true; 2711 case llvm::Triple::sparc: 2712 case llvm::Triple::sparcel: 2713 case llvm::Triple::sparcv9: 2714 if (getTriple().isOSFreeBSD() || getTriple().isOSOpenBSD() || 2715 getTriple().isOSSolaris()) 2716 return true; 2717 return false; 2718 default: 2719 return false; 2720 } 2721 } 2722 2723 static void addMultilibsFilePaths(const Driver &D, const MultilibSet &Multilibs, 2724 const Multilib &Multilib, 2725 StringRef InstallPath, 2726 ToolChain::path_list &Paths) { 2727 if (const auto &PathsCallback = Multilibs.filePathsCallback()) 2728 for (const auto &Path : PathsCallback(Multilib)) 2729 addPathIfExists(D, InstallPath + Path, Paths); 2730 } 2731 2732 void Generic_GCC::PushPPaths(ToolChain::path_list &PPaths) { 2733 // Cross-compiling binutils and GCC installations (vanilla and openSUSE at 2734 // least) put various tools in a triple-prefixed directory off of the parent 2735 // of the GCC installation. We use the GCC triple here to ensure that we end 2736 // up with tools that support the same amount of cross compiling as the 2737 // detected GCC installation. For example, if we find a GCC installation 2738 // targeting x86_64, but it is a bi-arch GCC installation, it can also be 2739 // used to target i386. 2740 if (GCCInstallation.isValid()) { 2741 PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" + 2742 GCCInstallation.getTriple().str() + "/bin") 2743 .str()); 2744 } 2745 } 2746 2747 void Generic_GCC::AddMultilibPaths(const Driver &D, 2748 const std::string &SysRoot, 2749 const std::string &OSLibDir, 2750 const std::string &MultiarchTriple, 2751 path_list &Paths) { 2752 // Add the multilib suffixed paths where they are available. 2753 if (GCCInstallation.isValid()) { 2754 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2755 const std::string &LibPath = 2756 std::string(GCCInstallation.getParentLibPath()); 2757 2758 // Add toolchain / multilib specific file paths. 2759 addMultilibsFilePaths(D, Multilibs, SelectedMultilib, 2760 GCCInstallation.getInstallPath(), Paths); 2761 2762 // Sourcery CodeBench MIPS toolchain holds some libraries under 2763 // a biarch-like suffix of the GCC installation. 2764 addPathIfExists( 2765 D, GCCInstallation.getInstallPath() + SelectedMultilib.gccSuffix(), 2766 Paths); 2767 2768 // GCC cross compiling toolchains will install target libraries which ship 2769 // as part of the toolchain under <prefix>/<triple>/<libdir> rather than as 2770 // any part of the GCC installation in 2771 // <prefix>/<libdir>/gcc/<triple>/<version>. This decision is somewhat 2772 // debatable, but is the reality today. We need to search this tree even 2773 // when we have a sysroot somewhere else. It is the responsibility of 2774 // whomever is doing the cross build targeting a sysroot using a GCC 2775 // installation that is *not* within the system root to ensure two things: 2776 // 2777 // 1) Any DSOs that are linked in from this tree or from the install path 2778 // above must be present on the system root and found via an 2779 // appropriate rpath. 2780 // 2) There must not be libraries installed into 2781 // <prefix>/<triple>/<libdir> unless they should be preferred over 2782 // those within the system root. 2783 // 2784 // Note that this matches the GCC behavior. See the below comment for where 2785 // Clang diverges from GCC's behavior. 2786 addPathIfExists(D, 2787 LibPath + "/../" + GCCTriple.str() + "/lib/../" + OSLibDir + 2788 SelectedMultilib.osSuffix(), 2789 Paths); 2790 2791 // If the GCC installation we found is inside of the sysroot, we want to 2792 // prefer libraries installed in the parent prefix of the GCC installation. 2793 // It is important to *not* use these paths when the GCC installation is 2794 // outside of the system root as that can pick up unintended libraries. 2795 // This usually happens when there is an external cross compiler on the 2796 // host system, and a more minimal sysroot available that is the target of 2797 // the cross. Note that GCC does include some of these directories in some 2798 // configurations but this seems somewhere between questionable and simply 2799 // a bug. 2800 if (StringRef(LibPath).startswith(SysRoot)) { 2801 addPathIfExists(D, LibPath + "/" + MultiarchTriple, Paths); 2802 addPathIfExists(D, LibPath + "/../" + OSLibDir, Paths); 2803 } 2804 } 2805 } 2806 2807 void Generic_GCC::AddMultiarchPaths(const Driver &D, 2808 const std::string &SysRoot, 2809 const std::string &OSLibDir, 2810 path_list &Paths) { 2811 // Try walking via the GCC triple path in case of biarch or multiarch GCC 2812 // installations with strange symlinks. 2813 if (GCCInstallation.isValid()) { 2814 addPathIfExists(D, 2815 SysRoot + "/usr/lib/" + GCCInstallation.getTriple().str() + 2816 "/../../" + OSLibDir, 2817 Paths); 2818 2819 // Add the 'other' biarch variant path 2820 Multilib BiarchSibling; 2821 if (GCCInstallation.getBiarchSibling(BiarchSibling)) { 2822 addPathIfExists( 2823 D, GCCInstallation.getInstallPath() + BiarchSibling.gccSuffix(), 2824 Paths); 2825 } 2826 2827 // See comments above on the multilib variant for details of why this is 2828 // included even from outside the sysroot. 2829 const std::string &LibPath = 2830 std::string(GCCInstallation.getParentLibPath()); 2831 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2832 const Multilib &Multilib = GCCInstallation.getMultilib(); 2833 addPathIfExists( 2834 D, LibPath + "/../" + GCCTriple.str() + "/lib" + Multilib.osSuffix(), 2835 Paths); 2836 2837 // See comments above on the multilib variant for details of why this is 2838 // only included from within the sysroot. 2839 if (StringRef(LibPath).startswith(SysRoot)) 2840 addPathIfExists(D, LibPath, Paths); 2841 } 2842 } 2843 2844 void Generic_GCC::AddMultilibIncludeArgs(const ArgList &DriverArgs, 2845 ArgStringList &CC1Args) const { 2846 // Add include directories specific to the selected multilib set and multilib. 2847 if (GCCInstallation.isValid()) { 2848 const auto &Callback = Multilibs.includeDirsCallback(); 2849 if (Callback) { 2850 for (const auto &Path : Callback(GCCInstallation.getMultilib())) 2851 addExternCSystemIncludeIfExists( 2852 DriverArgs, CC1Args, GCCInstallation.getInstallPath() + Path); 2853 } 2854 } 2855 } 2856 2857 void Generic_GCC::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 2858 ArgStringList &CC1Args) const { 2859 if (DriverArgs.hasArg(options::OPT_nostdlibinc) || 2860 DriverArgs.hasArg(options::OPT_nostdincxx)) 2861 return; 2862 2863 switch (GetCXXStdlibType(DriverArgs)) { 2864 case ToolChain::CST_Libcxx: 2865 addLibCxxIncludePaths(DriverArgs, CC1Args); 2866 break; 2867 2868 case ToolChain::CST_Libstdcxx: 2869 addLibStdCxxIncludePaths(DriverArgs, CC1Args); 2870 break; 2871 } 2872 } 2873 2874 static std::string DetectLibcxxIncludePath(llvm::vfs::FileSystem &vfs, 2875 StringRef base) { 2876 std::error_code EC; 2877 int MaxVersion = 0; 2878 std::string MaxVersionString; 2879 for (llvm::vfs::directory_iterator LI = vfs.dir_begin(base, EC), LE; 2880 !EC && LI != LE; LI = LI.increment(EC)) { 2881 StringRef VersionText = llvm::sys::path::filename(LI->path()); 2882 int Version; 2883 if (VersionText[0] == 'v' && 2884 !VersionText.slice(1, StringRef::npos).getAsInteger(10, Version)) { 2885 if (Version > MaxVersion) { 2886 MaxVersion = Version; 2887 MaxVersionString = std::string(VersionText); 2888 } 2889 } 2890 } 2891 return MaxVersion ? (base + "/" + MaxVersionString).str() : ""; 2892 } 2893 2894 void 2895 Generic_GCC::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 2896 llvm::opt::ArgStringList &CC1Args) const { 2897 auto AddIncludePath = [&](std::string Path) { 2898 std::string IncludePath = DetectLibcxxIncludePath(getVFS(), Path); 2899 if (IncludePath.empty() || !getVFS().exists(IncludePath)) 2900 return false; 2901 addSystemInclude(DriverArgs, CC1Args, IncludePath); 2902 return true; 2903 }; 2904 // Android never uses the libc++ headers installed alongside the toolchain, 2905 // which are generally incompatible with the NDK libraries anyway. 2906 if (!getTriple().isAndroid()) 2907 if (AddIncludePath(getDriver().Dir + "/../include/c++")) 2908 return; 2909 // If this is a development, non-installed, clang, libcxx will 2910 // not be found at ../include/c++ but it likely to be found at 2911 // one of the following two locations: 2912 std::string SysRoot = computeSysRoot(); 2913 if (AddIncludePath(SysRoot + "/usr/local/include/c++")) 2914 return; 2915 if (AddIncludePath(SysRoot + "/usr/include/c++")) 2916 return; 2917 } 2918 2919 /// Helper to add the variant paths of a libstdc++ installation. 2920 bool Generic_GCC::addLibStdCXXIncludePaths( 2921 Twine Base, Twine Suffix, StringRef GCCTriple, StringRef GCCMultiarchTriple, 2922 StringRef TargetMultiarchTriple, Twine IncludeSuffix, 2923 const ArgList &DriverArgs, ArgStringList &CC1Args) const { 2924 if (!getVFS().exists(Base + Suffix)) 2925 return false; 2926 2927 addSystemInclude(DriverArgs, CC1Args, Base + Suffix); 2928 2929 // The vanilla GCC layout of libstdc++ headers uses a triple subdirectory. If 2930 // that path exists or we have neither a GCC nor target multiarch triple, use 2931 // this vanilla search path. 2932 if ((GCCMultiarchTriple.empty() && TargetMultiarchTriple.empty()) || 2933 getVFS().exists(Base + Suffix + "/" + GCCTriple + IncludeSuffix)) { 2934 addSystemInclude(DriverArgs, CC1Args, 2935 Base + Suffix + "/" + GCCTriple + IncludeSuffix); 2936 } else { 2937 // Otherwise try to use multiarch naming schemes which have normalized the 2938 // triples and put the triple before the suffix. 2939 // 2940 // GCC surprisingly uses *both* the GCC triple with a multilib suffix and 2941 // the target triple, so we support that here. 2942 addSystemInclude(DriverArgs, CC1Args, 2943 Base + "/" + GCCMultiarchTriple + Suffix + IncludeSuffix); 2944 addSystemInclude(DriverArgs, CC1Args, 2945 Base + "/" + TargetMultiarchTriple + Suffix); 2946 } 2947 2948 addSystemInclude(DriverArgs, CC1Args, Base + Suffix + "/backward"); 2949 return true; 2950 } 2951 2952 bool 2953 Generic_GCC::addGCCLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 2954 llvm::opt::ArgStringList &CC1Args) const { 2955 // Use GCCInstallation to know where libstdc++ headers are installed. 2956 if (!GCCInstallation.isValid()) 2957 return false; 2958 2959 // By default, look for the C++ headers in an include directory adjacent to 2960 // the lib directory of the GCC installation. Note that this is expect to be 2961 // equivalent to '/usr/include/c++/X.Y' in almost all cases. 2962 StringRef LibDir = GCCInstallation.getParentLibPath(); 2963 StringRef InstallDir = GCCInstallation.getInstallPath(); 2964 StringRef TripleStr = GCCInstallation.getTriple().str(); 2965 const Multilib &Multilib = GCCInstallation.getMultilib(); 2966 const std::string GCCMultiarchTriple = getMultiarchTriple( 2967 getDriver(), GCCInstallation.getTriple(), getDriver().SysRoot); 2968 const std::string TargetMultiarchTriple = 2969 getMultiarchTriple(getDriver(), getTriple(), getDriver().SysRoot); 2970 const GCCVersion &Version = GCCInstallation.getVersion(); 2971 2972 // The primary search for libstdc++ supports multiarch variants. 2973 if (addLibStdCXXIncludePaths(LibDir.str() + "/../include", 2974 "/c++/" + Version.Text, TripleStr, 2975 GCCMultiarchTriple, TargetMultiarchTriple, 2976 Multilib.includeSuffix(), DriverArgs, CC1Args)) 2977 return true; 2978 2979 // Otherwise, fall back on a bunch of options which don't use multiarch 2980 // layouts for simplicity. 2981 const std::string LibStdCXXIncludePathCandidates[] = { 2982 // Gentoo is weird and places its headers inside the GCC install, 2983 // so if the first attempt to find the headers fails, try these patterns. 2984 InstallDir.str() + "/include/g++-v" + Version.Text, 2985 InstallDir.str() + "/include/g++-v" + Version.MajorStr + "." + 2986 Version.MinorStr, 2987 InstallDir.str() + "/include/g++-v" + Version.MajorStr, 2988 }; 2989 2990 for (const auto &IncludePath : LibStdCXXIncludePathCandidates) { 2991 if (addLibStdCXXIncludePaths(IncludePath, /*Suffix*/ "", TripleStr, 2992 /*GCCMultiarchTriple*/ "", 2993 /*TargetMultiarchTriple*/ "", 2994 Multilib.includeSuffix(), DriverArgs, CC1Args)) 2995 return true; 2996 } 2997 return false; 2998 } 2999 3000 void 3001 Generic_GCC::addLibStdCxxIncludePaths(const llvm::opt::ArgList &DriverArgs, 3002 llvm::opt::ArgStringList &CC1Args) const { 3003 addGCCLibStdCxxIncludePaths(DriverArgs, CC1Args); 3004 } 3005 3006 llvm::opt::DerivedArgList * 3007 Generic_GCC::TranslateArgs(const llvm::opt::DerivedArgList &Args, StringRef, 3008 Action::OffloadKind DeviceOffloadKind) const { 3009 3010 // If this tool chain is used for an OpenMP offloading device we have to make 3011 // sure we always generate a shared library regardless of the commands the 3012 // user passed to the host. This is required because the runtime library 3013 // is required to load the device image dynamically at run time. 3014 if (DeviceOffloadKind == Action::OFK_OpenMP) { 3015 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs()); 3016 const OptTable &Opts = getDriver().getOpts(); 3017 3018 // Request the shared library. Given that these options are decided 3019 // implicitly, they do not refer to any base argument. 3020 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_shared)); 3021 DAL->AddFlagArg(/*BaseArg=*/nullptr, Opts.getOption(options::OPT_fPIC)); 3022 3023 // Filter all the arguments we don't care passing to the offloading 3024 // toolchain as they can mess up with the creation of a shared library. 3025 for (auto *A : Args) { 3026 switch ((options::ID)A->getOption().getID()) { 3027 default: 3028 DAL->append(A); 3029 break; 3030 case options::OPT_shared: 3031 case options::OPT_dynamic: 3032 case options::OPT_static: 3033 case options::OPT_fPIC: 3034 case options::OPT_fno_PIC: 3035 case options::OPT_fpic: 3036 case options::OPT_fno_pic: 3037 case options::OPT_fPIE: 3038 case options::OPT_fno_PIE: 3039 case options::OPT_fpie: 3040 case options::OPT_fno_pie: 3041 break; 3042 } 3043 } 3044 return DAL; 3045 } 3046 return nullptr; 3047 } 3048 3049 void Generic_ELF::anchor() {} 3050 3051 void Generic_ELF::addClangTargetOptions(const ArgList &DriverArgs, 3052 ArgStringList &CC1Args, 3053 Action::OffloadKind) const { 3054 if (!DriverArgs.hasFlag(options::OPT_fuse_init_array, 3055 options::OPT_fno_use_init_array, true)) 3056 CC1Args.push_back("-fno-use-init-array"); 3057 } 3058