ToolChains.cpp revision 4e1b292146936432dd6c76ba413f700eb1cd3432
1//===--- ToolChains.cpp - ToolChain Implementations -----------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#include "ToolChains.h" 11 12#include "clang/Driver/Arg.h" 13#include "clang/Driver/ArgList.h" 14#include "clang/Driver/Compilation.h" 15#include "clang/Driver/Driver.h" 16#include "clang/Driver/DriverDiagnostic.h" 17#include "clang/Driver/ObjCRuntime.h" 18#include "clang/Driver/OptTable.h" 19#include "clang/Driver/Option.h" 20#include "clang/Driver/Options.h" 21#include "clang/Basic/Version.h" 22 23#include "llvm/ADT/SmallString.h" 24#include "llvm/ADT/StringExtras.h" 25#include "llvm/ADT/StringSwitch.h" 26#include "llvm/ADT/STLExtras.h" 27#include "llvm/Support/ErrorHandling.h" 28#include "llvm/Support/FileSystem.h" 29#include "llvm/Support/MemoryBuffer.h" 30#include "llvm/Support/raw_ostream.h" 31#include "llvm/Support/Path.h" 32#include "llvm/Support/system_error.h" 33 34#include <cstdlib> // ::getenv 35 36#include "clang/Config/config.h" // for GCC_INSTALL_PREFIX 37 38using namespace clang::driver; 39using namespace clang::driver::toolchains; 40using namespace clang; 41 42/// Darwin - Darwin tool chain for i386 and x86_64. 43 44Darwin::Darwin(const Driver &D, const llvm::Triple& Triple) 45 : ToolChain(D, Triple), TargetInitialized(false), 46 ARCRuntimeForSimulator(ARCSimulator_None), 47 LibCXXForSimulator(LibCXXSimulator_None) 48{ 49 // Compute the initial Darwin version from the triple 50 unsigned Major, Minor, Micro; 51 if (!Triple.getMacOSXVersion(Major, Minor, Micro)) 52 getDriver().Diag(diag::err_drv_invalid_darwin_version) << 53 Triple.getOSName(); 54 llvm::raw_string_ostream(MacosxVersionMin) 55 << Major << '.' << Minor << '.' << Micro; 56 57 // FIXME: DarwinVersion is only used to find GCC's libexec directory. 58 // It should be removed when we stop supporting that. 59 DarwinVersion[0] = Minor + 4; 60 DarwinVersion[1] = Micro; 61 DarwinVersion[2] = 0; 62} 63 64types::ID Darwin::LookupTypeForExtension(const char *Ext) const { 65 types::ID Ty = types::lookupTypeForExtension(Ext); 66 67 // Darwin always preprocesses assembly files (unless -x is used explicitly). 68 if (Ty == types::TY_PP_Asm) 69 return types::TY_Asm; 70 71 return Ty; 72} 73 74bool Darwin::HasNativeLLVMSupport() const { 75 return true; 76} 77 78bool Darwin::hasARCRuntime() const { 79 // FIXME: Remove this once there is a proper way to detect an ARC runtime 80 // for the simulator. 81 switch (ARCRuntimeForSimulator) { 82 case ARCSimulator_None: 83 break; 84 case ARCSimulator_HasARCRuntime: 85 return true; 86 case ARCSimulator_NoARCRuntime: 87 return false; 88 } 89 90 if (isTargetIPhoneOS()) 91 return !isIPhoneOSVersionLT(5); 92 else 93 return !isMacosxVersionLT(10, 7); 94} 95 96bool Darwin::hasSubscriptingRuntime() const { 97 return !isTargetIPhoneOS() && !isMacosxVersionLT(10, 8); 98} 99 100/// Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0. 101void Darwin::configureObjCRuntime(ObjCRuntime &runtime) const { 102 if (runtime.getKind() != ObjCRuntime::NeXT) 103 return ToolChain::configureObjCRuntime(runtime); 104 105 runtime.HasARC = runtime.HasWeak = hasARCRuntime(); 106 runtime.HasSubscripting = hasSubscriptingRuntime(); 107 108 // So far, objc_terminate is only available in iOS 5. 109 // FIXME: do the simulator logic properly. 110 if (!ARCRuntimeForSimulator && isTargetIPhoneOS()) 111 runtime.HasTerminate = !isIPhoneOSVersionLT(5); 112 else 113 runtime.HasTerminate = false; 114} 115 116/// Darwin provides a blocks runtime starting in MacOS X 10.6 and iOS 3.2. 117bool Darwin::hasBlocksRuntime() const { 118 if (isTargetIPhoneOS()) 119 return !isIPhoneOSVersionLT(3, 2); 120 else 121 return !isMacosxVersionLT(10, 6); 122} 123 124static const char *GetArmArchForMArch(StringRef Value) { 125 return llvm::StringSwitch<const char*>(Value) 126 .Case("armv6k", "armv6") 127 .Case("armv5tej", "armv5") 128 .Case("xscale", "xscale") 129 .Case("armv4t", "armv4t") 130 .Case("armv7", "armv7") 131 .Cases("armv7a", "armv7-a", "armv7") 132 .Cases("armv7r", "armv7-r", "armv7") 133 .Cases("armv7m", "armv7-m", "armv7") 134 .Default(0); 135} 136 137static const char *GetArmArchForMCpu(StringRef Value) { 138 return llvm::StringSwitch<const char *>(Value) 139 .Cases("arm9e", "arm946e-s", "arm966e-s", "arm968e-s", "arm926ej-s","armv5") 140 .Cases("arm10e", "arm10tdmi", "armv5") 141 .Cases("arm1020t", "arm1020e", "arm1022e", "arm1026ej-s", "armv5") 142 .Case("xscale", "xscale") 143 .Cases("arm1136j-s", "arm1136jf-s", "arm1176jz-s", 144 "arm1176jzf-s", "cortex-m0", "armv6") 145 .Cases("cortex-a8", "cortex-r4", "cortex-m3", "cortex-a9", "armv7") 146 .Default(0); 147} 148 149StringRef Darwin::getDarwinArchName(const ArgList &Args) const { 150 switch (getTriple().getArch()) { 151 default: 152 return getArchName(); 153 154 case llvm::Triple::thumb: 155 case llvm::Triple::arm: { 156 if (const Arg *A = Args.getLastArg(options::OPT_march_EQ)) 157 if (const char *Arch = GetArmArchForMArch(A->getValue(Args))) 158 return Arch; 159 160 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) 161 if (const char *Arch = GetArmArchForMCpu(A->getValue(Args))) 162 return Arch; 163 164 return "arm"; 165 } 166 } 167} 168 169Darwin::~Darwin() { 170 // Free tool implementations. 171 for (llvm::DenseMap<unsigned, Tool*>::iterator 172 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 173 delete it->second; 174} 175 176std::string Darwin::ComputeEffectiveClangTriple(const ArgList &Args, 177 types::ID InputType) const { 178 llvm::Triple Triple(ComputeLLVMTriple(Args, InputType)); 179 180 // If the target isn't initialized (e.g., an unknown Darwin platform, return 181 // the default triple). 182 if (!isTargetInitialized()) 183 return Triple.getTriple(); 184 185 SmallString<16> Str; 186 Str += isTargetIPhoneOS() ? "ios" : "macosx"; 187 Str += getTargetVersion().getAsString(); 188 Triple.setOSName(Str); 189 190 return Triple.getTriple(); 191} 192 193void Generic_ELF::anchor() {} 194 195Tool &Darwin::SelectTool(const Compilation &C, const JobAction &JA, 196 const ActionList &Inputs) const { 197 Action::ActionClass Key; 198 199 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) { 200 // Fallback to llvm-gcc for i386 kext compiles, we don't support that ABI. 201 if (Inputs.size() == 1 && 202 types::isCXX(Inputs[0]->getType()) && 203 getTriple().isOSDarwin() && 204 getTriple().getArch() == llvm::Triple::x86 && 205 (C.getArgs().getLastArg(options::OPT_fapple_kext) || 206 C.getArgs().getLastArg(options::OPT_mkernel))) 207 Key = JA.getKind(); 208 else 209 Key = Action::AnalyzeJobClass; 210 } else 211 Key = JA.getKind(); 212 213 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 214 options::OPT_no_integrated_as, 215 IsIntegratedAssemblerDefault()); 216 217 Tool *&T = Tools[Key]; 218 if (!T) { 219 switch (Key) { 220 case Action::InputClass: 221 case Action::BindArchClass: 222 llvm_unreachable("Invalid tool kind."); 223 case Action::PreprocessJobClass: 224 T = new tools::darwin::Preprocess(*this); break; 225 case Action::AnalyzeJobClass: 226 case Action::MigrateJobClass: 227 T = new tools::Clang(*this); break; 228 case Action::PrecompileJobClass: 229 case Action::CompileJobClass: 230 T = new tools::darwin::Compile(*this); break; 231 case Action::AssembleJobClass: { 232 if (UseIntegratedAs) 233 T = new tools::ClangAs(*this); 234 else 235 T = new tools::darwin::Assemble(*this); 236 break; 237 } 238 case Action::LinkJobClass: 239 T = new tools::darwin::Link(*this); break; 240 case Action::LipoJobClass: 241 T = new tools::darwin::Lipo(*this); break; 242 case Action::DsymutilJobClass: 243 T = new tools::darwin::Dsymutil(*this); break; 244 case Action::VerifyJobClass: 245 T = new tools::darwin::VerifyDebug(*this); break; 246 } 247 } 248 249 return *T; 250} 251 252 253DarwinClang::DarwinClang(const Driver &D, const llvm::Triple& Triple) 254 : Darwin(D, Triple) 255{ 256 getProgramPaths().push_back(getDriver().getInstalledDir()); 257 if (getDriver().getInstalledDir() != getDriver().Dir) 258 getProgramPaths().push_back(getDriver().Dir); 259 260 // We expect 'as', 'ld', etc. to be adjacent to our install dir. 261 getProgramPaths().push_back(getDriver().getInstalledDir()); 262 if (getDriver().getInstalledDir() != getDriver().Dir) 263 getProgramPaths().push_back(getDriver().Dir); 264 265 // For fallback, we need to know how to find the GCC cc1 executables, so we 266 // also add the GCC libexec paths. This is legacy code that can be removed 267 // once fallback is no longer useful. 268 AddGCCLibexecPath(DarwinVersion[0]); 269 AddGCCLibexecPath(DarwinVersion[0] - 2); 270 AddGCCLibexecPath(DarwinVersion[0] - 1); 271 AddGCCLibexecPath(DarwinVersion[0] + 1); 272 AddGCCLibexecPath(DarwinVersion[0] + 2); 273} 274 275void DarwinClang::AddGCCLibexecPath(unsigned darwinVersion) { 276 std::string ToolChainDir = "i686-apple-darwin"; 277 ToolChainDir += llvm::utostr(darwinVersion); 278 ToolChainDir += "/4.2.1"; 279 280 std::string Path = getDriver().Dir; 281 Path += "/../llvm-gcc-4.2/libexec/gcc/"; 282 Path += ToolChainDir; 283 getProgramPaths().push_back(Path); 284 285 Path = "/usr/llvm-gcc-4.2/libexec/gcc/"; 286 Path += ToolChainDir; 287 getProgramPaths().push_back(Path); 288} 289 290void DarwinClang::AddLinkSearchPathArgs(const ArgList &Args, 291 ArgStringList &CmdArgs) const { 292 // The Clang toolchain uses explicit paths for internal libraries. 293 294 // Unfortunately, we still might depend on a few of the libraries that are 295 // only available in the gcc library directory (in particular 296 // libstdc++.dylib). For now, hardcode the path to the known install location. 297 // FIXME: This should get ripped out someday. However, when building on 298 // 10.6 (darwin10), we're still relying on this to find libstdc++.dylib. 299 llvm::sys::Path P(getDriver().Dir); 300 P.eraseComponent(); // .../usr/bin -> ../usr 301 P.appendComponent("llvm-gcc-4.2"); 302 P.appendComponent("lib"); 303 P.appendComponent("gcc"); 304 switch (getTriple().getArch()) { 305 default: 306 llvm_unreachable("Invalid Darwin arch!"); 307 case llvm::Triple::x86: 308 case llvm::Triple::x86_64: 309 P.appendComponent("i686-apple-darwin10"); 310 break; 311 case llvm::Triple::arm: 312 case llvm::Triple::thumb: 313 P.appendComponent("arm-apple-darwin10"); 314 break; 315 case llvm::Triple::ppc: 316 case llvm::Triple::ppc64: 317 P.appendComponent("powerpc-apple-darwin10"); 318 break; 319 } 320 P.appendComponent("4.2.1"); 321 322 // Determine the arch specific GCC subdirectory. 323 const char *ArchSpecificDir = 0; 324 switch (getTriple().getArch()) { 325 default: 326 break; 327 case llvm::Triple::arm: 328 case llvm::Triple::thumb: { 329 std::string Triple = ComputeLLVMTriple(Args); 330 StringRef TripleStr = Triple; 331 if (TripleStr.startswith("armv5") || TripleStr.startswith("thumbv5")) 332 ArchSpecificDir = "v5"; 333 else if (TripleStr.startswith("armv6") || TripleStr.startswith("thumbv6")) 334 ArchSpecificDir = "v6"; 335 else if (TripleStr.startswith("armv7") || TripleStr.startswith("thumbv7")) 336 ArchSpecificDir = "v7"; 337 break; 338 } 339 case llvm::Triple::ppc64: 340 ArchSpecificDir = "ppc64"; 341 break; 342 case llvm::Triple::x86_64: 343 ArchSpecificDir = "x86_64"; 344 break; 345 } 346 347 if (ArchSpecificDir) { 348 P.appendComponent(ArchSpecificDir); 349 bool Exists; 350 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) 351 CmdArgs.push_back(Args.MakeArgString("-L" + P.str())); 352 P.eraseComponent(); 353 } 354 355 bool Exists; 356 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) 357 CmdArgs.push_back(Args.MakeArgString("-L" + P.str())); 358} 359 360void DarwinClang::AddLinkARCArgs(const ArgList &Args, 361 ArgStringList &CmdArgs) const { 362 363 CmdArgs.push_back("-force_load"); 364 llvm::sys::Path P(getDriver().ClangExecutable); 365 P.eraseComponent(); // 'clang' 366 P.eraseComponent(); // 'bin' 367 P.appendComponent("lib"); 368 P.appendComponent("arc"); 369 P.appendComponent("libarclite_"); 370 std::string s = P.str(); 371 // Mash in the platform. 372 if (isTargetIOSSimulator()) 373 s += "iphonesimulator"; 374 else if (isTargetIPhoneOS()) 375 s += "iphoneos"; 376 // FIXME: Remove this once we depend fully on -mios-simulator-version-min. 377 else if (ARCRuntimeForSimulator != ARCSimulator_None) 378 s += "iphonesimulator"; 379 else 380 s += "macosx"; 381 s += ".a"; 382 383 CmdArgs.push_back(Args.MakeArgString(s)); 384} 385 386void DarwinClang::AddLinkRuntimeLib(const ArgList &Args, 387 ArgStringList &CmdArgs, 388 const char *DarwinStaticLib) const { 389 llvm::sys::Path P(getDriver().ResourceDir); 390 P.appendComponent("lib"); 391 P.appendComponent("darwin"); 392 P.appendComponent(DarwinStaticLib); 393 394 // For now, allow missing resource libraries to support developers who may 395 // not have compiler-rt checked out or integrated into their build. 396 bool Exists; 397 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) 398 CmdArgs.push_back(Args.MakeArgString(P.str())); 399} 400 401void DarwinClang::AddLinkRuntimeLibArgs(const ArgList &Args, 402 ArgStringList &CmdArgs) const { 403 // Darwin only supports the compiler-rt based runtime libraries. 404 switch (GetRuntimeLibType(Args)) { 405 case ToolChain::RLT_CompilerRT: 406 break; 407 default: 408 getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform) 409 << Args.getLastArg(options::OPT_rtlib_EQ)->getValue(Args) << "darwin"; 410 return; 411 } 412 413 // Darwin doesn't support real static executables, don't link any runtime 414 // libraries with -static. 415 if (Args.hasArg(options::OPT_static)) 416 return; 417 418 // Reject -static-libgcc for now, we can deal with this when and if someone 419 // cares. This is useful in situations where someone wants to statically link 420 // something like libstdc++, and needs its runtime support routines. 421 if (const Arg *A = Args.getLastArg(options::OPT_static_libgcc)) { 422 getDriver().Diag(diag::err_drv_unsupported_opt) 423 << A->getAsString(Args); 424 return; 425 } 426 427 // If we are building profile support, link that library in. 428 if (Args.hasArg(options::OPT_fprofile_arcs) || 429 Args.hasArg(options::OPT_fprofile_generate) || 430 Args.hasArg(options::OPT_fcreate_profile) || 431 Args.hasArg(options::OPT_coverage)) { 432 // Select the appropriate runtime library for the target. 433 if (isTargetIPhoneOS()) { 434 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.profile_ios.a"); 435 } else { 436 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.profile_osx.a"); 437 } 438 } 439 440 // Add ASAN runtime library, if required. Dynamic libraries and bundles 441 // should not be linked with the runtime library. 442 if (Args.hasFlag(options::OPT_faddress_sanitizer, 443 options::OPT_fno_address_sanitizer, false)) { 444 if (Args.hasArg(options::OPT_dynamiclib) || 445 Args.hasArg(options::OPT_bundle)) return; 446 if (isTargetIPhoneOS()) { 447 getDriver().Diag(diag::err_drv_clang_unsupported_per_platform) 448 << "-faddress-sanitizer"; 449 } else { 450 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.asan_osx.a"); 451 452 // The ASAN runtime library requires C++ and CoreFoundation. 453 AddCXXStdlibLibArgs(Args, CmdArgs); 454 CmdArgs.push_back("-framework"); 455 CmdArgs.push_back("CoreFoundation"); 456 } 457 } 458 459 // Otherwise link libSystem, then the dynamic runtime library, and finally any 460 // target specific static runtime library. 461 CmdArgs.push_back("-lSystem"); 462 463 // Select the dynamic runtime library and the target specific static library. 464 if (isTargetIPhoneOS()) { 465 // If we are compiling as iOS / simulator, don't attempt to link libgcc_s.1, 466 // it never went into the SDK. 467 // Linking against libgcc_s.1 isn't needed for iOS 5.0+ 468 if (isIPhoneOSVersionLT(5, 0) && !isTargetIOSSimulator()) 469 CmdArgs.push_back("-lgcc_s.1"); 470 471 // We currently always need a static runtime library for iOS. 472 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.ios.a"); 473 } else { 474 // The dynamic runtime library was merged with libSystem for 10.6 and 475 // beyond; only 10.4 and 10.5 need an additional runtime library. 476 if (isMacosxVersionLT(10, 5)) 477 CmdArgs.push_back("-lgcc_s.10.4"); 478 else if (isMacosxVersionLT(10, 6)) 479 CmdArgs.push_back("-lgcc_s.10.5"); 480 481 // For OS X, we thought we would only need a static runtime library when 482 // targeting 10.4, to provide versions of the static functions which were 483 // omitted from 10.4.dylib. 484 // 485 // Unfortunately, that turned out to not be true, because Darwin system 486 // headers can still use eprintf on i386, and it is not exported from 487 // libSystem. Therefore, we still must provide a runtime library just for 488 // the tiny tiny handful of projects that *might* use that symbol. 489 if (isMacosxVersionLT(10, 5)) { 490 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.10.4.a"); 491 } else { 492 if (getTriple().getArch() == llvm::Triple::x86) 493 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.eprintf.a"); 494 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.osx.a"); 495 } 496 } 497} 498 499static inline StringRef SimulatorVersionDefineName() { 500 return "__IPHONE_OS_VERSION_MIN_REQUIRED"; 501} 502 503/// \brief Parse the simulator version define: 504/// __IPHONE_OS_VERSION_MIN_REQUIRED=([0-9])([0-9][0-9])([0-9][0-9]) 505// and return the grouped values as integers, e.g: 506// __IPHONE_OS_VERSION_MIN_REQUIRED=40201 507// will return Major=4, Minor=2, Micro=1. 508static bool GetVersionFromSimulatorDefine(StringRef define, 509 unsigned &Major, unsigned &Minor, 510 unsigned &Micro) { 511 assert(define.startswith(SimulatorVersionDefineName())); 512 StringRef name, version; 513 llvm::tie(name, version) = define.split('='); 514 if (version.empty()) 515 return false; 516 std::string verstr = version.str(); 517 char *end; 518 unsigned num = (unsigned) strtol(verstr.c_str(), &end, 10); 519 if (*end != '\0') 520 return false; 521 Major = num / 10000; 522 num = num % 10000; 523 Minor = num / 100; 524 Micro = num % 100; 525 return true; 526} 527 528void Darwin::AddDeploymentTarget(DerivedArgList &Args) const { 529 const OptTable &Opts = getDriver().getOpts(); 530 531 Arg *OSXVersion = Args.getLastArg(options::OPT_mmacosx_version_min_EQ); 532 Arg *iOSVersion = Args.getLastArg(options::OPT_miphoneos_version_min_EQ); 533 Arg *iOSSimVersion = Args.getLastArg( 534 options::OPT_mios_simulator_version_min_EQ); 535 536 // FIXME: HACK! When compiling for the simulator we don't get a 537 // '-miphoneos-version-min' to help us know whether there is an ARC runtime 538 // or not; try to parse a __IPHONE_OS_VERSION_MIN_REQUIRED 539 // define passed in command-line. 540 if (!iOSVersion && !iOSSimVersion) { 541 for (arg_iterator it = Args.filtered_begin(options::OPT_D), 542 ie = Args.filtered_end(); it != ie; ++it) { 543 StringRef define = (*it)->getValue(Args); 544 if (define.startswith(SimulatorVersionDefineName())) { 545 unsigned Major = 0, Minor = 0, Micro = 0; 546 if (GetVersionFromSimulatorDefine(define, Major, Minor, Micro) && 547 Major < 10 && Minor < 100 && Micro < 100) { 548 ARCRuntimeForSimulator = Major < 5 ? ARCSimulator_NoARCRuntime 549 : ARCSimulator_HasARCRuntime; 550 LibCXXForSimulator = Major < 5 ? LibCXXSimulator_NotAvailable 551 : LibCXXSimulator_Available; 552 } 553 break; 554 } 555 } 556 } 557 558 if (OSXVersion && (iOSVersion || iOSSimVersion)) { 559 getDriver().Diag(diag::err_drv_argument_not_allowed_with) 560 << OSXVersion->getAsString(Args) 561 << (iOSVersion ? iOSVersion : iOSSimVersion)->getAsString(Args); 562 iOSVersion = iOSSimVersion = 0; 563 } else if (iOSVersion && iOSSimVersion) { 564 getDriver().Diag(diag::err_drv_argument_not_allowed_with) 565 << iOSVersion->getAsString(Args) 566 << iOSSimVersion->getAsString(Args); 567 iOSSimVersion = 0; 568 } else if (!OSXVersion && !iOSVersion && !iOSSimVersion) { 569 // If no deployment target was specified on the command line, check for 570 // environment defines. 571 StringRef OSXTarget; 572 StringRef iOSTarget; 573 StringRef iOSSimTarget; 574 if (char *env = ::getenv("MACOSX_DEPLOYMENT_TARGET")) 575 OSXTarget = env; 576 if (char *env = ::getenv("IPHONEOS_DEPLOYMENT_TARGET")) 577 iOSTarget = env; 578 if (char *env = ::getenv("IOS_SIMULATOR_DEPLOYMENT_TARGET")) 579 iOSSimTarget = env; 580 581 // If no '-miphoneos-version-min' specified on the command line and 582 // IPHONEOS_DEPLOYMENT_TARGET is not defined, see if we can set the default 583 // based on -isysroot. 584 if (iOSTarget.empty()) { 585 if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) { 586 StringRef first, second; 587 StringRef isysroot = A->getValue(Args); 588 llvm::tie(first, second) = isysroot.split(StringRef("SDKs/iPhoneOS")); 589 if (second != "") 590 iOSTarget = second.substr(0,3); 591 } 592 } 593 594 // If no OSX or iOS target has been specified and we're compiling for armv7, 595 // go ahead as assume we're targeting iOS. 596 if (OSXTarget.empty() && iOSTarget.empty()) 597 if (getDarwinArchName(Args) == "armv7") 598 iOSTarget = "0.0"; 599 600 // Handle conflicting deployment targets 601 // 602 // FIXME: Don't hardcode default here. 603 604 // Do not allow conflicts with the iOS simulator target. 605 if (!iOSSimTarget.empty() && (!OSXTarget.empty() || !iOSTarget.empty())) { 606 getDriver().Diag(diag::err_drv_conflicting_deployment_targets) 607 << "IOS_SIMULATOR_DEPLOYMENT_TARGET" 608 << (!OSXTarget.empty() ? "MACOSX_DEPLOYMENT_TARGET" : 609 "IPHONEOS_DEPLOYMENT_TARGET"); 610 } 611 612 // Allow conflicts among OSX and iOS for historical reasons, but choose the 613 // default platform. 614 if (!OSXTarget.empty() && !iOSTarget.empty()) { 615 if (getTriple().getArch() == llvm::Triple::arm || 616 getTriple().getArch() == llvm::Triple::thumb) 617 OSXTarget = ""; 618 else 619 iOSTarget = ""; 620 } 621 622 if (!OSXTarget.empty()) { 623 const Option *O = Opts.getOption(options::OPT_mmacosx_version_min_EQ); 624 OSXVersion = Args.MakeJoinedArg(0, O, OSXTarget); 625 Args.append(OSXVersion); 626 } else if (!iOSTarget.empty()) { 627 const Option *O = Opts.getOption(options::OPT_miphoneos_version_min_EQ); 628 iOSVersion = Args.MakeJoinedArg(0, O, iOSTarget); 629 Args.append(iOSVersion); 630 } else if (!iOSSimTarget.empty()) { 631 const Option *O = Opts.getOption( 632 options::OPT_mios_simulator_version_min_EQ); 633 iOSSimVersion = Args.MakeJoinedArg(0, O, iOSSimTarget); 634 Args.append(iOSSimVersion); 635 } else { 636 // Otherwise, assume we are targeting OS X. 637 const Option *O = Opts.getOption(options::OPT_mmacosx_version_min_EQ); 638 OSXVersion = Args.MakeJoinedArg(0, O, MacosxVersionMin); 639 Args.append(OSXVersion); 640 } 641 } 642 643 // Reject invalid architecture combinations. 644 if (iOSSimVersion && (getTriple().getArch() != llvm::Triple::x86 && 645 getTriple().getArch() != llvm::Triple::x86_64)) { 646 getDriver().Diag(diag::err_drv_invalid_arch_for_deployment_target) 647 << getTriple().getArchName() << iOSSimVersion->getAsString(Args); 648 } 649 650 // Set the tool chain target information. 651 unsigned Major, Minor, Micro; 652 bool HadExtra; 653 if (OSXVersion) { 654 assert((!iOSVersion && !iOSSimVersion) && "Unknown target platform!"); 655 if (!Driver::GetReleaseVersion(OSXVersion->getValue(Args), Major, Minor, 656 Micro, HadExtra) || HadExtra || 657 Major != 10 || Minor >= 100 || Micro >= 100) 658 getDriver().Diag(diag::err_drv_invalid_version_number) 659 << OSXVersion->getAsString(Args); 660 } else { 661 const Arg *Version = iOSVersion ? iOSVersion : iOSSimVersion; 662 assert(Version && "Unknown target platform!"); 663 if (!Driver::GetReleaseVersion(Version->getValue(Args), Major, Minor, 664 Micro, HadExtra) || HadExtra || 665 Major >= 10 || Minor >= 100 || Micro >= 100) 666 getDriver().Diag(diag::err_drv_invalid_version_number) 667 << Version->getAsString(Args); 668 } 669 670 bool IsIOSSim = bool(iOSSimVersion); 671 672 // In GCC, the simulator historically was treated as being OS X in some 673 // contexts, like determining the link logic, despite generally being called 674 // with an iOS deployment target. For compatibility, we detect the 675 // simulator as iOS + x86, and treat it differently in a few contexts. 676 if (iOSVersion && (getTriple().getArch() == llvm::Triple::x86 || 677 getTriple().getArch() == llvm::Triple::x86_64)) 678 IsIOSSim = true; 679 680 setTarget(/*IsIPhoneOS=*/ !OSXVersion, Major, Minor, Micro, IsIOSSim); 681} 682 683void DarwinClang::AddCXXStdlibLibArgs(const ArgList &Args, 684 ArgStringList &CmdArgs) const { 685 CXXStdlibType Type = GetCXXStdlibType(Args); 686 687 switch (Type) { 688 case ToolChain::CST_Libcxx: 689 CmdArgs.push_back("-lc++"); 690 break; 691 692 case ToolChain::CST_Libstdcxx: { 693 // Unfortunately, -lstdc++ doesn't always exist in the standard search path; 694 // it was previously found in the gcc lib dir. However, for all the Darwin 695 // platforms we care about it was -lstdc++.6, so we search for that 696 // explicitly if we can't see an obvious -lstdc++ candidate. 697 698 // Check in the sysroot first. 699 bool Exists; 700 if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) { 701 llvm::sys::Path P(A->getValue(Args)); 702 P.appendComponent("usr"); 703 P.appendComponent("lib"); 704 P.appendComponent("libstdc++.dylib"); 705 706 if (llvm::sys::fs::exists(P.str(), Exists) || !Exists) { 707 P.eraseComponent(); 708 P.appendComponent("libstdc++.6.dylib"); 709 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) { 710 CmdArgs.push_back(Args.MakeArgString(P.str())); 711 return; 712 } 713 } 714 } 715 716 // Otherwise, look in the root. 717 // FIXME: This should be removed someday when we don't have to care about 718 // 10.6 and earlier, where /usr/lib/libstdc++.dylib does not exist. 719 if ((llvm::sys::fs::exists("/usr/lib/libstdc++.dylib", Exists) || !Exists)&& 720 (!llvm::sys::fs::exists("/usr/lib/libstdc++.6.dylib", Exists) && Exists)){ 721 CmdArgs.push_back("/usr/lib/libstdc++.6.dylib"); 722 return; 723 } 724 725 // Otherwise, let the linker search. 726 CmdArgs.push_back("-lstdc++"); 727 break; 728 } 729 } 730} 731 732void DarwinClang::AddCCKextLibArgs(const ArgList &Args, 733 ArgStringList &CmdArgs) const { 734 735 // For Darwin platforms, use the compiler-rt-based support library 736 // instead of the gcc-provided one (which is also incidentally 737 // only present in the gcc lib dir, which makes it hard to find). 738 739 llvm::sys::Path P(getDriver().ResourceDir); 740 P.appendComponent("lib"); 741 P.appendComponent("darwin"); 742 P.appendComponent("libclang_rt.cc_kext.a"); 743 744 // For now, allow missing resource libraries to support developers who may 745 // not have compiler-rt checked out or integrated into their build. 746 bool Exists; 747 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) 748 CmdArgs.push_back(Args.MakeArgString(P.str())); 749} 750 751DerivedArgList *Darwin::TranslateArgs(const DerivedArgList &Args, 752 const char *BoundArch) const { 753 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs()); 754 const OptTable &Opts = getDriver().getOpts(); 755 756 // FIXME: We really want to get out of the tool chain level argument 757 // translation business, as it makes the driver functionality much 758 // more opaque. For now, we follow gcc closely solely for the 759 // purpose of easily achieving feature parity & testability. Once we 760 // have something that works, we should reevaluate each translation 761 // and try to push it down into tool specific logic. 762 763 for (ArgList::const_iterator it = Args.begin(), 764 ie = Args.end(); it != ie; ++it) { 765 Arg *A = *it; 766 767 if (A->getOption().matches(options::OPT_Xarch__)) { 768 // Skip this argument unless the architecture matches either the toolchain 769 // triple arch, or the arch being bound. 770 // 771 // FIXME: Canonicalize name. 772 StringRef XarchArch = A->getValue(Args, 0); 773 if (!(XarchArch == getArchName() || 774 (BoundArch && XarchArch == BoundArch))) 775 continue; 776 777 Arg *OriginalArg = A; 778 unsigned Index = Args.getBaseArgs().MakeIndex(A->getValue(Args, 1)); 779 unsigned Prev = Index; 780 Arg *XarchArg = Opts.ParseOneArg(Args, Index); 781 782 // If the argument parsing failed or more than one argument was 783 // consumed, the -Xarch_ argument's parameter tried to consume 784 // extra arguments. Emit an error and ignore. 785 // 786 // We also want to disallow any options which would alter the 787 // driver behavior; that isn't going to work in our model. We 788 // use isDriverOption() as an approximation, although things 789 // like -O4 are going to slip through. 790 if (!XarchArg || Index > Prev + 1) { 791 getDriver().Diag(diag::err_drv_invalid_Xarch_argument_with_args) 792 << A->getAsString(Args); 793 continue; 794 } else if (XarchArg->getOption().isDriverOption()) { 795 getDriver().Diag(diag::err_drv_invalid_Xarch_argument_isdriver) 796 << A->getAsString(Args); 797 continue; 798 } 799 800 XarchArg->setBaseArg(A); 801 A = XarchArg; 802 803 DAL->AddSynthesizedArg(A); 804 805 // Linker input arguments require custom handling. The problem is that we 806 // have already constructed the phase actions, so we can not treat them as 807 // "input arguments". 808 if (A->getOption().isLinkerInput()) { 809 // Convert the argument into individual Zlinker_input_args. 810 for (unsigned i = 0, e = A->getNumValues(); i != e; ++i) { 811 DAL->AddSeparateArg(OriginalArg, 812 Opts.getOption(options::OPT_Zlinker_input), 813 A->getValue(Args, i)); 814 815 } 816 continue; 817 } 818 } 819 820 // Sob. These is strictly gcc compatible for the time being. Apple 821 // gcc translates options twice, which means that self-expanding 822 // options add duplicates. 823 switch ((options::ID) A->getOption().getID()) { 824 default: 825 DAL->append(A); 826 break; 827 828 case options::OPT_mkernel: 829 case options::OPT_fapple_kext: 830 DAL->append(A); 831 DAL->AddFlagArg(A, Opts.getOption(options::OPT_static)); 832 break; 833 834 case options::OPT_dependency_file: 835 DAL->AddSeparateArg(A, Opts.getOption(options::OPT_MF), 836 A->getValue(Args)); 837 break; 838 839 case options::OPT_gfull: 840 DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag)); 841 DAL->AddFlagArg(A, 842 Opts.getOption(options::OPT_fno_eliminate_unused_debug_symbols)); 843 break; 844 845 case options::OPT_gused: 846 DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag)); 847 DAL->AddFlagArg(A, 848 Opts.getOption(options::OPT_feliminate_unused_debug_symbols)); 849 break; 850 851 case options::OPT_shared: 852 DAL->AddFlagArg(A, Opts.getOption(options::OPT_dynamiclib)); 853 break; 854 855 case options::OPT_fconstant_cfstrings: 856 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mconstant_cfstrings)); 857 break; 858 859 case options::OPT_fno_constant_cfstrings: 860 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_constant_cfstrings)); 861 break; 862 863 case options::OPT_Wnonportable_cfstrings: 864 DAL->AddFlagArg(A, 865 Opts.getOption(options::OPT_mwarn_nonportable_cfstrings)); 866 break; 867 868 case options::OPT_Wno_nonportable_cfstrings: 869 DAL->AddFlagArg(A, 870 Opts.getOption(options::OPT_mno_warn_nonportable_cfstrings)); 871 break; 872 873 case options::OPT_fpascal_strings: 874 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mpascal_strings)); 875 break; 876 877 case options::OPT_fno_pascal_strings: 878 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_pascal_strings)); 879 break; 880 } 881 } 882 883 if (getTriple().getArch() == llvm::Triple::x86 || 884 getTriple().getArch() == llvm::Triple::x86_64) 885 if (!Args.hasArgNoClaim(options::OPT_mtune_EQ)) 886 DAL->AddJoinedArg(0, Opts.getOption(options::OPT_mtune_EQ), "core2"); 887 888 // Add the arch options based on the particular spelling of -arch, to match 889 // how the driver driver works. 890 if (BoundArch) { 891 StringRef Name = BoundArch; 892 const Option *MCpu = Opts.getOption(options::OPT_mcpu_EQ); 893 const Option *MArch = Opts.getOption(options::OPT_march_EQ); 894 895 // This code must be kept in sync with LLVM's getArchTypeForDarwinArch, 896 // which defines the list of which architectures we accept. 897 if (Name == "ppc") 898 ; 899 else if (Name == "ppc601") 900 DAL->AddJoinedArg(0, MCpu, "601"); 901 else if (Name == "ppc603") 902 DAL->AddJoinedArg(0, MCpu, "603"); 903 else if (Name == "ppc604") 904 DAL->AddJoinedArg(0, MCpu, "604"); 905 else if (Name == "ppc604e") 906 DAL->AddJoinedArg(0, MCpu, "604e"); 907 else if (Name == "ppc750") 908 DAL->AddJoinedArg(0, MCpu, "750"); 909 else if (Name == "ppc7400") 910 DAL->AddJoinedArg(0, MCpu, "7400"); 911 else if (Name == "ppc7450") 912 DAL->AddJoinedArg(0, MCpu, "7450"); 913 else if (Name == "ppc970") 914 DAL->AddJoinedArg(0, MCpu, "970"); 915 916 else if (Name == "ppc64") 917 DAL->AddFlagArg(0, Opts.getOption(options::OPT_m64)); 918 919 else if (Name == "i386") 920 ; 921 else if (Name == "i486") 922 DAL->AddJoinedArg(0, MArch, "i486"); 923 else if (Name == "i586") 924 DAL->AddJoinedArg(0, MArch, "i586"); 925 else if (Name == "i686") 926 DAL->AddJoinedArg(0, MArch, "i686"); 927 else if (Name == "pentium") 928 DAL->AddJoinedArg(0, MArch, "pentium"); 929 else if (Name == "pentium2") 930 DAL->AddJoinedArg(0, MArch, "pentium2"); 931 else if (Name == "pentpro") 932 DAL->AddJoinedArg(0, MArch, "pentiumpro"); 933 else if (Name == "pentIIm3") 934 DAL->AddJoinedArg(0, MArch, "pentium2"); 935 936 else if (Name == "x86_64") 937 DAL->AddFlagArg(0, Opts.getOption(options::OPT_m64)); 938 939 else if (Name == "arm") 940 DAL->AddJoinedArg(0, MArch, "armv4t"); 941 else if (Name == "armv4t") 942 DAL->AddJoinedArg(0, MArch, "armv4t"); 943 else if (Name == "armv5") 944 DAL->AddJoinedArg(0, MArch, "armv5tej"); 945 else if (Name == "xscale") 946 DAL->AddJoinedArg(0, MArch, "xscale"); 947 else if (Name == "armv6") 948 DAL->AddJoinedArg(0, MArch, "armv6k"); 949 else if (Name == "armv7") 950 DAL->AddJoinedArg(0, MArch, "armv7a"); 951 952 else 953 llvm_unreachable("invalid Darwin arch"); 954 } 955 956 // Add an explicit version min argument for the deployment target. We do this 957 // after argument translation because -Xarch_ arguments may add a version min 958 // argument. 959 if (BoundArch) 960 AddDeploymentTarget(*DAL); 961 962 // Validate the C++ standard library choice. 963 CXXStdlibType Type = GetCXXStdlibType(*DAL); 964 if (Type == ToolChain::CST_Libcxx) { 965 switch (LibCXXForSimulator) { 966 case LibCXXSimulator_None: 967 // Handle non-simulator cases. 968 if (isTargetIPhoneOS()) { 969 if (isIPhoneOSVersionLT(5, 0)) { 970 getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment) 971 << "iOS 5.0"; 972 } 973 } 974 break; 975 case LibCXXSimulator_NotAvailable: 976 getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment) 977 << "iOS 5.0"; 978 break; 979 case LibCXXSimulator_Available: 980 break; 981 } 982 } 983 984 return DAL; 985} 986 987bool Darwin::IsUnwindTablesDefault() const { 988 // FIXME: Gross; we should probably have some separate target 989 // definition, possibly even reusing the one in clang. 990 return getArchName() == "x86_64"; 991} 992 993bool Darwin::UseDwarfDebugFlags() const { 994 if (const char *S = ::getenv("RC_DEBUG_OPTIONS")) 995 return S[0] != '\0'; 996 return false; 997} 998 999bool Darwin::UseSjLjExceptions() const { 1000 // Darwin uses SjLj exceptions on ARM. 1001 return (getTriple().getArch() == llvm::Triple::arm || 1002 getTriple().getArch() == llvm::Triple::thumb); 1003} 1004 1005const char *Darwin::GetDefaultRelocationModel() const { 1006 return "pic"; 1007} 1008 1009const char *Darwin::GetForcedPicModel() const { 1010 if (getArchName() == "x86_64") 1011 return "pic"; 1012 return 0; 1013} 1014 1015bool Darwin::SupportsProfiling() const { 1016 // Profiling instrumentation is only supported on x86. 1017 return getArchName() == "i386" || getArchName() == "x86_64"; 1018} 1019 1020bool Darwin::SupportsObjCGC() const { 1021 // Garbage collection is supported everywhere except on iPhone OS. 1022 return !isTargetIPhoneOS(); 1023} 1024 1025bool Darwin::SupportsObjCARC() const { 1026 return isTargetIPhoneOS() || !isMacosxVersionLT(10, 6); 1027} 1028 1029std::string 1030Darwin_Generic_GCC::ComputeEffectiveClangTriple(const ArgList &Args, 1031 types::ID InputType) const { 1032 return ComputeLLVMTriple(Args, InputType); 1033} 1034 1035/// Generic_GCC - A tool chain using the 'gcc' command to perform 1036/// all subcommands; this relies on gcc translating the majority of 1037/// command line options. 1038 1039/// \brief Parse a GCCVersion object out of a string of text. 1040/// 1041/// This is the primary means of forming GCCVersion objects. 1042/*static*/ 1043Generic_GCC::GCCVersion Linux::GCCVersion::Parse(StringRef VersionText) { 1044 const GCCVersion BadVersion = { VersionText.str(), -1, -1, -1, "" }; 1045 std::pair<StringRef, StringRef> First = VersionText.split('.'); 1046 std::pair<StringRef, StringRef> Second = First.second.split('.'); 1047 1048 GCCVersion GoodVersion = { VersionText.str(), -1, -1, -1, "" }; 1049 if (First.first.getAsInteger(10, GoodVersion.Major) || 1050 GoodVersion.Major < 0) 1051 return BadVersion; 1052 if (Second.first.getAsInteger(10, GoodVersion.Minor) || 1053 GoodVersion.Minor < 0) 1054 return BadVersion; 1055 1056 // First look for a number prefix and parse that if present. Otherwise just 1057 // stash the entire patch string in the suffix, and leave the number 1058 // unspecified. This covers versions strings such as: 1059 // 4.4 1060 // 4.4.0 1061 // 4.4.x 1062 // 4.4.2-rc4 1063 // 4.4.x-patched 1064 // And retains any patch number it finds. 1065 StringRef PatchText = GoodVersion.PatchSuffix = Second.second.str(); 1066 if (!PatchText.empty()) { 1067 if (unsigned EndNumber = PatchText.find_first_not_of("0123456789")) { 1068 // Try to parse the number and any suffix. 1069 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) || 1070 GoodVersion.Patch < 0) 1071 return BadVersion; 1072 GoodVersion.PatchSuffix = PatchText.substr(EndNumber).str(); 1073 } 1074 } 1075 1076 return GoodVersion; 1077} 1078 1079/// \brief Less-than for GCCVersion, implementing a Strict Weak Ordering. 1080bool Generic_GCC::GCCVersion::operator<(const GCCVersion &RHS) const { 1081 if (Major < RHS.Major) return true; if (Major > RHS.Major) return false; 1082 if (Minor < RHS.Minor) return true; if (Minor > RHS.Minor) return false; 1083 1084 // Note that we rank versions with *no* patch specified is better than ones 1085 // hard-coding a patch version. Thus if the RHS has no patch, it always 1086 // wins, and the LHS only wins if it has no patch and the RHS does have 1087 // a patch. 1088 if (RHS.Patch == -1) return true; if (Patch == -1) return false; 1089 if (Patch < RHS.Patch) return true; if (Patch > RHS.Patch) return false; 1090 if (PatchSuffix == RHS.PatchSuffix) return false; 1091 1092 // Finally, between completely tied version numbers, the version with the 1093 // suffix loses as we prefer full releases. 1094 if (RHS.PatchSuffix.empty()) return true; 1095 return false; 1096} 1097 1098static StringRef getGCCToolchainDir(const ArgList &Args) { 1099 const Arg *A = Args.getLastArg(options::OPT_gcc_toolchain); 1100 if (A) 1101 return A->getValue(Args); 1102 return GCC_INSTALL_PREFIX; 1103} 1104 1105/// \brief Construct a GCCInstallationDetector from the driver. 1106/// 1107/// This performs all of the autodetection and sets up the various paths. 1108/// Once constructed, a GCCInstallationDetector is essentially immutable. 1109/// 1110/// FIXME: We shouldn't need an explicit TargetTriple parameter here, and 1111/// should instead pull the target out of the driver. This is currently 1112/// necessary because the driver doesn't store the final version of the target 1113/// triple. 1114Generic_GCC::GCCInstallationDetector::GCCInstallationDetector( 1115 const Driver &D, 1116 const llvm::Triple &TargetTriple, 1117 const ArgList &Args) 1118 : IsValid(false) { 1119 llvm::Triple MultiarchTriple 1120 = TargetTriple.isArch32Bit() ? TargetTriple.get64BitArchVariant() 1121 : TargetTriple.get32BitArchVariant(); 1122 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 1123 // The library directories which may contain GCC installations. 1124 SmallVector<StringRef, 4> CandidateLibDirs, CandidateMultiarchLibDirs; 1125 // The compatible GCC triples for this particular architecture. 1126 SmallVector<StringRef, 10> CandidateTripleAliases; 1127 SmallVector<StringRef, 10> CandidateMultiarchTripleAliases; 1128 CollectLibDirsAndTriples(TargetTriple, MultiarchTriple, CandidateLibDirs, 1129 CandidateTripleAliases, 1130 CandidateMultiarchLibDirs, 1131 CandidateMultiarchTripleAliases); 1132 1133 // Compute the set of prefixes for our search. 1134 SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(), 1135 D.PrefixDirs.end()); 1136 1137 StringRef GCCToolchainDir = getGCCToolchainDir(Args); 1138 if (GCCToolchainDir != "") { 1139 if (GCCToolchainDir.back() == '/') 1140 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the / 1141 1142 Prefixes.push_back(GCCToolchainDir); 1143 } else { 1144 Prefixes.push_back(D.SysRoot); 1145 Prefixes.push_back(D.SysRoot + "/usr"); 1146 Prefixes.push_back(D.InstalledDir + "/.."); 1147 } 1148 1149 // Loop over the various components which exist and select the best GCC 1150 // installation available. GCC installs are ranked by version number. 1151 Version = GCCVersion::Parse("0.0.0"); 1152 for (unsigned i = 0, ie = Prefixes.size(); i < ie; ++i) { 1153 if (!llvm::sys::fs::exists(Prefixes[i])) 1154 continue; 1155 for (unsigned j = 0, je = CandidateLibDirs.size(); j < je; ++j) { 1156 const std::string LibDir = Prefixes[i] + CandidateLibDirs[j].str(); 1157 if (!llvm::sys::fs::exists(LibDir)) 1158 continue; 1159 for (unsigned k = 0, ke = CandidateTripleAliases.size(); k < ke; ++k) 1160 ScanLibDirForGCCTriple(TargetArch, LibDir, CandidateTripleAliases[k]); 1161 } 1162 for (unsigned j = 0, je = CandidateMultiarchLibDirs.size(); j < je; ++j) { 1163 const std::string LibDir 1164 = Prefixes[i] + CandidateMultiarchLibDirs[j].str(); 1165 if (!llvm::sys::fs::exists(LibDir)) 1166 continue; 1167 for (unsigned k = 0, ke = CandidateMultiarchTripleAliases.size(); k < ke; 1168 ++k) 1169 ScanLibDirForGCCTriple(TargetArch, LibDir, 1170 CandidateMultiarchTripleAliases[k], 1171 /*NeedsMultiarchSuffix=*/true); 1172 } 1173 } 1174} 1175 1176/*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples( 1177 const llvm::Triple &TargetTriple, 1178 const llvm::Triple &MultiarchTriple, 1179 SmallVectorImpl<StringRef> &LibDirs, 1180 SmallVectorImpl<StringRef> &TripleAliases, 1181 SmallVectorImpl<StringRef> &MultiarchLibDirs, 1182 SmallVectorImpl<StringRef> &MultiarchTripleAliases) { 1183 // Declare a bunch of static data sets that we'll select between below. These 1184 // are specifically designed to always refer to string literals to avoid any 1185 // lifetime or initialization issues. 1186 static const char *const ARMLibDirs[] = { "/lib" }; 1187 static const char *const ARMTriples[] = { 1188 "arm-linux-gnueabi", 1189 "arm-linux-androideabi" 1190 }; 1191 1192 static const char *const X86_64LibDirs[] = { "/lib64", "/lib" }; 1193 static const char *const X86_64Triples[] = { 1194 "x86_64-linux-gnu", 1195 "x86_64-unknown-linux-gnu", 1196 "x86_64-pc-linux-gnu", 1197 "x86_64-redhat-linux6E", 1198 "x86_64-redhat-linux", 1199 "x86_64-suse-linux", 1200 "x86_64-manbo-linux-gnu", 1201 "x86_64-linux-gnu", 1202 "x86_64-slackware-linux" 1203 }; 1204 static const char *const X86LibDirs[] = { "/lib32", "/lib" }; 1205 static const char *const X86Triples[] = { 1206 "i686-linux-gnu", 1207 "i686-pc-linux-gnu", 1208 "i486-linux-gnu", 1209 "i386-linux-gnu", 1210 "i686-redhat-linux", 1211 "i586-redhat-linux", 1212 "i386-redhat-linux", 1213 "i586-suse-linux", 1214 "i486-slackware-linux" 1215 }; 1216 1217 static const char *const MIPSLibDirs[] = { "/lib" }; 1218 static const char *const MIPSTriples[] = { "mips-linux-gnu" }; 1219 static const char *const MIPSELLibDirs[] = { "/lib" }; 1220 static const char *const MIPSELTriples[] = { "mipsel-linux-gnu" }; 1221 1222 static const char *const MIPS64LibDirs[] = { "/lib64", "/lib" }; 1223 static const char *const MIPS64Triples[] = { "mips64-linux-gnu" }; 1224 static const char *const MIPS64ELLibDirs[] = { "/lib64", "/lib" }; 1225 static const char *const MIPS64ELTriples[] = { "mips64el-linux-gnu" }; 1226 1227 static const char *const PPCLibDirs[] = { "/lib32", "/lib" }; 1228 static const char *const PPCTriples[] = { 1229 "powerpc-linux-gnu", 1230 "powerpc-unknown-linux-gnu", 1231 "powerpc-suse-linux" 1232 }; 1233 static const char *const PPC64LibDirs[] = { "/lib64", "/lib" }; 1234 static const char *const PPC64Triples[] = { 1235 "powerpc64-linux-gnu", 1236 "powerpc64-unknown-linux-gnu", 1237 "powerpc64-suse-linux", 1238 "ppc64-redhat-linux" 1239 }; 1240 1241 switch (TargetTriple.getArch()) { 1242 case llvm::Triple::arm: 1243 case llvm::Triple::thumb: 1244 LibDirs.append(ARMLibDirs, ARMLibDirs + llvm::array_lengthof(ARMLibDirs)); 1245 TripleAliases.append( 1246 ARMTriples, ARMTriples + llvm::array_lengthof(ARMTriples)); 1247 break; 1248 case llvm::Triple::x86_64: 1249 LibDirs.append( 1250 X86_64LibDirs, X86_64LibDirs + llvm::array_lengthof(X86_64LibDirs)); 1251 TripleAliases.append( 1252 X86_64Triples, X86_64Triples + llvm::array_lengthof(X86_64Triples)); 1253 MultiarchLibDirs.append( 1254 X86LibDirs, X86LibDirs + llvm::array_lengthof(X86LibDirs)); 1255 MultiarchTripleAliases.append( 1256 X86Triples, X86Triples + llvm::array_lengthof(X86Triples)); 1257 break; 1258 case llvm::Triple::x86: 1259 LibDirs.append(X86LibDirs, X86LibDirs + llvm::array_lengthof(X86LibDirs)); 1260 TripleAliases.append( 1261 X86Triples, X86Triples + llvm::array_lengthof(X86Triples)); 1262 MultiarchLibDirs.append( 1263 X86_64LibDirs, X86_64LibDirs + llvm::array_lengthof(X86_64LibDirs)); 1264 MultiarchTripleAliases.append( 1265 X86_64Triples, X86_64Triples + llvm::array_lengthof(X86_64Triples)); 1266 break; 1267 case llvm::Triple::mips: 1268 LibDirs.append( 1269 MIPSLibDirs, MIPSLibDirs + llvm::array_lengthof(MIPSLibDirs)); 1270 TripleAliases.append( 1271 MIPSTriples, MIPSTriples + llvm::array_lengthof(MIPSTriples)); 1272 MultiarchLibDirs.append( 1273 MIPS64LibDirs, MIPS64LibDirs + llvm::array_lengthof(MIPS64LibDirs)); 1274 MultiarchTripleAliases.append( 1275 MIPS64Triples, MIPS64Triples + llvm::array_lengthof(MIPS64Triples)); 1276 break; 1277 case llvm::Triple::mipsel: 1278 LibDirs.append( 1279 MIPSELLibDirs, MIPSELLibDirs + llvm::array_lengthof(MIPSELLibDirs)); 1280 TripleAliases.append( 1281 MIPSELTriples, MIPSELTriples + llvm::array_lengthof(MIPSELTriples)); 1282 MultiarchLibDirs.append( 1283 MIPS64ELLibDirs, MIPS64ELLibDirs + llvm::array_lengthof(MIPS64ELLibDirs)); 1284 MultiarchTripleAliases.append( 1285 MIPS64ELTriples, MIPS64ELTriples + llvm::array_lengthof(MIPS64ELTriples)); 1286 break; 1287 case llvm::Triple::mips64: 1288 LibDirs.append( 1289 MIPS64LibDirs, MIPS64LibDirs + llvm::array_lengthof(MIPS64LibDirs)); 1290 TripleAliases.append( 1291 MIPS64Triples, MIPS64Triples + llvm::array_lengthof(MIPS64Triples)); 1292 MultiarchLibDirs.append( 1293 MIPSLibDirs, MIPSLibDirs + llvm::array_lengthof(MIPSLibDirs)); 1294 MultiarchTripleAliases.append( 1295 MIPSTriples, MIPSTriples + llvm::array_lengthof(MIPSTriples)); 1296 break; 1297 case llvm::Triple::mips64el: 1298 LibDirs.append( 1299 MIPS64ELLibDirs, MIPS64ELLibDirs + llvm::array_lengthof(MIPS64ELLibDirs)); 1300 TripleAliases.append( 1301 MIPS64ELTriples, MIPS64ELTriples + llvm::array_lengthof(MIPS64ELTriples)); 1302 MultiarchLibDirs.append( 1303 MIPSELLibDirs, MIPSELLibDirs + llvm::array_lengthof(MIPSELLibDirs)); 1304 MultiarchTripleAliases.append( 1305 MIPSELTriples, MIPSELTriples + llvm::array_lengthof(MIPSELTriples)); 1306 break; 1307 case llvm::Triple::ppc: 1308 LibDirs.append(PPCLibDirs, PPCLibDirs + llvm::array_lengthof(PPCLibDirs)); 1309 TripleAliases.append( 1310 PPCTriples, PPCTriples + llvm::array_lengthof(PPCTriples)); 1311 MultiarchLibDirs.append( 1312 PPC64LibDirs, PPC64LibDirs + llvm::array_lengthof(PPC64LibDirs)); 1313 MultiarchTripleAliases.append( 1314 PPC64Triples, PPC64Triples + llvm::array_lengthof(PPC64Triples)); 1315 break; 1316 case llvm::Triple::ppc64: 1317 LibDirs.append( 1318 PPC64LibDirs, PPC64LibDirs + llvm::array_lengthof(PPC64LibDirs)); 1319 TripleAliases.append( 1320 PPC64Triples, PPC64Triples + llvm::array_lengthof(PPC64Triples)); 1321 MultiarchLibDirs.append( 1322 PPCLibDirs, PPCLibDirs + llvm::array_lengthof(PPCLibDirs)); 1323 MultiarchTripleAliases.append( 1324 PPCTriples, PPCTriples + llvm::array_lengthof(PPCTriples)); 1325 break; 1326 1327 default: 1328 // By default, just rely on the standard lib directories and the original 1329 // triple. 1330 break; 1331 } 1332 1333 // Always append the drivers target triple to the end, in case it doesn't 1334 // match any of our aliases. 1335 TripleAliases.push_back(TargetTriple.str()); 1336 1337 // Also include the multiarch variant if it's different. 1338 if (TargetTriple.str() != MultiarchTriple.str()) 1339 MultiarchTripleAliases.push_back(MultiarchTriple.str()); 1340} 1341 1342void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple( 1343 llvm::Triple::ArchType TargetArch, const std::string &LibDir, 1344 StringRef CandidateTriple, bool NeedsMultiarchSuffix) { 1345 // There are various different suffixes involving the triple we 1346 // check for. We also record what is necessary to walk from each back 1347 // up to the lib directory. 1348 const std::string LibSuffixes[] = { 1349 "/gcc/" + CandidateTriple.str(), 1350 "/" + CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), 1351 1352 // Ubuntu has a strange mis-matched pair of triples that this happens to 1353 // match. 1354 // FIXME: It may be worthwhile to generalize this and look for a second 1355 // triple. 1356 "/i386-linux-gnu/gcc/" + CandidateTriple.str() 1357 }; 1358 const std::string InstallSuffixes[] = { 1359 "/../../..", 1360 "/../../../..", 1361 "/../../../.." 1362 }; 1363 // Only look at the final, weird Ubuntu suffix for i386-linux-gnu. 1364 const unsigned NumLibSuffixes = (llvm::array_lengthof(LibSuffixes) - 1365 (TargetArch != llvm::Triple::x86)); 1366 for (unsigned i = 0; i < NumLibSuffixes; ++i) { 1367 StringRef LibSuffix = LibSuffixes[i]; 1368 llvm::error_code EC; 1369 for (llvm::sys::fs::directory_iterator LI(LibDir + LibSuffix, EC), LE; 1370 !EC && LI != LE; LI = LI.increment(EC)) { 1371 StringRef VersionText = llvm::sys::path::filename(LI->path()); 1372 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 1373 static const GCCVersion MinVersion = { "4.1.1", 4, 1, 1, "" }; 1374 if (CandidateVersion < MinVersion) 1375 continue; 1376 if (CandidateVersion <= Version) 1377 continue; 1378 1379 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs 1380 // in what would normally be GCCInstallPath and put the 64-bit 1381 // libs in a subdirectory named 64. The simple logic we follow is that 1382 // *if* there is a subdirectory of the right name with crtbegin.o in it, 1383 // we use that. If not, and if not a multiarch triple, we look for 1384 // crtbegin.o without the subdirectory. 1385 StringRef MultiarchSuffix 1386 = (TargetArch == llvm::Triple::x86_64 || 1387 TargetArch == llvm::Triple::ppc64 || 1388 TargetArch == llvm::Triple::mips64 || 1389 TargetArch == llvm::Triple::mips64el) ? "/64" : "/32"; 1390 if (llvm::sys::fs::exists(LI->path() + MultiarchSuffix + "/crtbegin.o")) { 1391 GCCMultiarchSuffix = MultiarchSuffix.str(); 1392 } else { 1393 if (NeedsMultiarchSuffix || 1394 !llvm::sys::fs::exists(LI->path() + "/crtbegin.o")) 1395 continue; 1396 GCCMultiarchSuffix.clear(); 1397 } 1398 1399 Version = CandidateVersion; 1400 GCCTriple.setTriple(CandidateTriple); 1401 // FIXME: We hack together the directory name here instead of 1402 // using LI to ensure stable path separators across Windows and 1403 // Linux. 1404 GCCInstallPath = LibDir + LibSuffixes[i] + "/" + VersionText.str(); 1405 GCCParentLibPath = GCCInstallPath + InstallSuffixes[i]; 1406 IsValid = true; 1407 } 1408 } 1409} 1410 1411Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple& Triple, 1412 const ArgList &Args) 1413 : ToolChain(D, Triple), GCCInstallation(getDriver(), Triple, Args) { 1414 getProgramPaths().push_back(getDriver().getInstalledDir()); 1415 if (getDriver().getInstalledDir() != getDriver().Dir) 1416 getProgramPaths().push_back(getDriver().Dir); 1417} 1418 1419Generic_GCC::~Generic_GCC() { 1420 // Free tool implementations. 1421 for (llvm::DenseMap<unsigned, Tool*>::iterator 1422 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 1423 delete it->second; 1424} 1425 1426Tool &Generic_GCC::SelectTool(const Compilation &C, 1427 const JobAction &JA, 1428 const ActionList &Inputs) const { 1429 Action::ActionClass Key; 1430 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1431 Key = Action::AnalyzeJobClass; 1432 else 1433 Key = JA.getKind(); 1434 1435 Tool *&T = Tools[Key]; 1436 if (!T) { 1437 switch (Key) { 1438 case Action::InputClass: 1439 case Action::BindArchClass: 1440 llvm_unreachable("Invalid tool kind."); 1441 case Action::PreprocessJobClass: 1442 T = new tools::gcc::Preprocess(*this); break; 1443 case Action::PrecompileJobClass: 1444 T = new tools::gcc::Precompile(*this); break; 1445 case Action::AnalyzeJobClass: 1446 case Action::MigrateJobClass: 1447 T = new tools::Clang(*this); break; 1448 case Action::CompileJobClass: 1449 T = new tools::gcc::Compile(*this); break; 1450 case Action::AssembleJobClass: 1451 T = new tools::gcc::Assemble(*this); break; 1452 case Action::LinkJobClass: 1453 T = new tools::gcc::Link(*this); break; 1454 1455 // This is a bit ungeneric, but the only platform using a driver 1456 // driver is Darwin. 1457 case Action::LipoJobClass: 1458 T = new tools::darwin::Lipo(*this); break; 1459 case Action::DsymutilJobClass: 1460 T = new tools::darwin::Dsymutil(*this); break; 1461 case Action::VerifyJobClass: 1462 T = new tools::darwin::VerifyDebug(*this); break; 1463 } 1464 } 1465 1466 return *T; 1467} 1468 1469bool Generic_GCC::IsUnwindTablesDefault() const { 1470 // FIXME: Gross; we should probably have some separate target 1471 // definition, possibly even reusing the one in clang. 1472 return getArchName() == "x86_64"; 1473} 1474 1475const char *Generic_GCC::GetDefaultRelocationModel() const { 1476 return "static"; 1477} 1478 1479const char *Generic_GCC::GetForcedPicModel() const { 1480 return 0; 1481} 1482/// Hexagon Toolchain 1483 1484Hexagon_TC::Hexagon_TC(const Driver &D, const llvm::Triple& Triple) 1485 : ToolChain(D, Triple) { 1486 getProgramPaths().push_back(getDriver().getInstalledDir()); 1487 if (getDriver().getInstalledDir() != getDriver().Dir.c_str()) 1488 getProgramPaths().push_back(getDriver().Dir); 1489} 1490 1491Hexagon_TC::~Hexagon_TC() { 1492 // Free tool implementations. 1493 for (llvm::DenseMap<unsigned, Tool*>::iterator 1494 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 1495 delete it->second; 1496} 1497 1498Tool &Hexagon_TC::SelectTool(const Compilation &C, 1499 const JobAction &JA, 1500 const ActionList &Inputs) const { 1501 Action::ActionClass Key; 1502 // if (JA.getKind () == Action::CompileJobClass) 1503 // Key = JA.getKind (); 1504 // else 1505 1506 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1507 Key = Action::AnalyzeJobClass; 1508 else 1509 Key = JA.getKind(); 1510 // if ((JA.getKind () == Action::CompileJobClass) 1511 // && (JA.getType () != types::TY_LTO_BC)) { 1512 // Key = JA.getKind (); 1513 // } 1514 1515 Tool *&T = Tools[Key]; 1516 if (!T) { 1517 switch (Key) { 1518 case Action::InputClass: 1519 case Action::BindArchClass: 1520 assert(0 && "Invalid tool kind."); 1521 case Action::AnalyzeJobClass: 1522 T = new tools::Clang(*this); break; 1523 case Action::AssembleJobClass: 1524 T = new tools::hexagon::Assemble(*this); break; 1525 case Action::LinkJobClass: 1526 T = new tools::hexagon::Link(*this); break; 1527 default: 1528 assert(false && "Unsupported action for Hexagon target."); 1529 } 1530 } 1531 1532 return *T; 1533} 1534 1535bool Hexagon_TC::IsUnwindTablesDefault() const { 1536 // FIXME: Gross; we should probably have some separate target 1537 // definition, possibly even reusing the one in clang. 1538 return getArchName() == "x86_64"; 1539} 1540 1541const char *Hexagon_TC::GetDefaultRelocationModel() const { 1542 return "static"; 1543} 1544 1545const char *Hexagon_TC::GetForcedPicModel() const { 1546 return 0; 1547} // End Hexagon 1548 1549 1550/// TCEToolChain - A tool chain using the llvm bitcode tools to perform 1551/// all subcommands. See http://tce.cs.tut.fi for our peculiar target. 1552/// Currently does not support anything else but compilation. 1553 1554TCEToolChain::TCEToolChain(const Driver &D, const llvm::Triple& Triple) 1555 : ToolChain(D, Triple) { 1556 // Path mangling to find libexec 1557 std::string Path(getDriver().Dir); 1558 1559 Path += "/../libexec"; 1560 getProgramPaths().push_back(Path); 1561} 1562 1563TCEToolChain::~TCEToolChain() { 1564 for (llvm::DenseMap<unsigned, Tool*>::iterator 1565 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 1566 delete it->second; 1567} 1568 1569bool TCEToolChain::IsMathErrnoDefault() const { 1570 return true; 1571} 1572 1573bool TCEToolChain::IsUnwindTablesDefault() const { 1574 return false; 1575} 1576 1577const char *TCEToolChain::GetDefaultRelocationModel() const { 1578 return "static"; 1579} 1580 1581const char *TCEToolChain::GetForcedPicModel() const { 1582 return 0; 1583} 1584 1585Tool &TCEToolChain::SelectTool(const Compilation &C, 1586 const JobAction &JA, 1587 const ActionList &Inputs) const { 1588 Action::ActionClass Key; 1589 Key = Action::AnalyzeJobClass; 1590 1591 Tool *&T = Tools[Key]; 1592 if (!T) { 1593 switch (Key) { 1594 case Action::PreprocessJobClass: 1595 T = new tools::gcc::Preprocess(*this); break; 1596 case Action::AnalyzeJobClass: 1597 T = new tools::Clang(*this); break; 1598 default: 1599 llvm_unreachable("Unsupported action for TCE target."); 1600 } 1601 } 1602 return *T; 1603} 1604 1605/// OpenBSD - OpenBSD tool chain which can call as(1) and ld(1) directly. 1606 1607OpenBSD::OpenBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1608 : Generic_ELF(D, Triple, Args) { 1609 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1610 getFilePaths().push_back("/usr/lib"); 1611} 1612 1613Tool &OpenBSD::SelectTool(const Compilation &C, const JobAction &JA, 1614 const ActionList &Inputs) const { 1615 Action::ActionClass Key; 1616 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1617 Key = Action::AnalyzeJobClass; 1618 else 1619 Key = JA.getKind(); 1620 1621 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 1622 options::OPT_no_integrated_as, 1623 IsIntegratedAssemblerDefault()); 1624 1625 Tool *&T = Tools[Key]; 1626 if (!T) { 1627 switch (Key) { 1628 case Action::AssembleJobClass: { 1629 if (UseIntegratedAs) 1630 T = new tools::ClangAs(*this); 1631 else 1632 T = new tools::openbsd::Assemble(*this); 1633 break; 1634 } 1635 case Action::LinkJobClass: 1636 T = new tools::openbsd::Link(*this); break; 1637 default: 1638 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1639 } 1640 } 1641 1642 return *T; 1643} 1644 1645/// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly. 1646 1647FreeBSD::FreeBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1648 : Generic_ELF(D, Triple, Args) { 1649 1650 // When targeting 32-bit platforms, look for '/usr/lib32/crt1.o' and fall 1651 // back to '/usr/lib' if it doesn't exist. 1652 if ((Triple.getArch() == llvm::Triple::x86 || 1653 Triple.getArch() == llvm::Triple::ppc) && 1654 llvm::sys::fs::exists(getDriver().SysRoot + "/usr/lib32/crt1.o")) 1655 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib32"); 1656 else 1657 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib"); 1658} 1659 1660Tool &FreeBSD::SelectTool(const Compilation &C, const JobAction &JA, 1661 const ActionList &Inputs) const { 1662 Action::ActionClass Key; 1663 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1664 Key = Action::AnalyzeJobClass; 1665 else 1666 Key = JA.getKind(); 1667 1668 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 1669 options::OPT_no_integrated_as, 1670 IsIntegratedAssemblerDefault()); 1671 1672 Tool *&T = Tools[Key]; 1673 if (!T) { 1674 switch (Key) { 1675 case Action::AssembleJobClass: 1676 if (UseIntegratedAs) 1677 T = new tools::ClangAs(*this); 1678 else 1679 T = new tools::freebsd::Assemble(*this); 1680 break; 1681 case Action::LinkJobClass: 1682 T = new tools::freebsd::Link(*this); break; 1683 default: 1684 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1685 } 1686 } 1687 1688 return *T; 1689} 1690 1691/// NetBSD - NetBSD tool chain which can call as(1) and ld(1) directly. 1692 1693NetBSD::NetBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1694 : Generic_ELF(D, Triple, Args) { 1695 1696 if (getDriver().UseStdLib) { 1697 // When targeting a 32-bit platform, try the special directory used on 1698 // 64-bit hosts, and only fall back to the main library directory if that 1699 // doesn't work. 1700 // FIXME: It'd be nicer to test if this directory exists, but I'm not sure 1701 // what all logic is needed to emulate the '=' prefix here. 1702 if (Triple.getArch() == llvm::Triple::x86) 1703 getFilePaths().push_back("=/usr/lib/i386"); 1704 1705 getFilePaths().push_back("=/usr/lib"); 1706 } 1707} 1708 1709Tool &NetBSD::SelectTool(const Compilation &C, const JobAction &JA, 1710 const ActionList &Inputs) const { 1711 Action::ActionClass Key; 1712 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1713 Key = Action::AnalyzeJobClass; 1714 else 1715 Key = JA.getKind(); 1716 1717 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 1718 options::OPT_no_integrated_as, 1719 IsIntegratedAssemblerDefault()); 1720 1721 Tool *&T = Tools[Key]; 1722 if (!T) { 1723 switch (Key) { 1724 case Action::AssembleJobClass: 1725 if (UseIntegratedAs) 1726 T = new tools::ClangAs(*this); 1727 else 1728 T = new tools::netbsd::Assemble(*this); 1729 break; 1730 case Action::LinkJobClass: 1731 T = new tools::netbsd::Link(*this); 1732 break; 1733 default: 1734 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1735 } 1736 } 1737 1738 return *T; 1739} 1740 1741/// Minix - Minix tool chain which can call as(1) and ld(1) directly. 1742 1743Minix::Minix(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1744 : Generic_ELF(D, Triple, Args) { 1745 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1746 getFilePaths().push_back("/usr/lib"); 1747} 1748 1749Tool &Minix::SelectTool(const Compilation &C, const JobAction &JA, 1750 const ActionList &Inputs) const { 1751 Action::ActionClass Key; 1752 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1753 Key = Action::AnalyzeJobClass; 1754 else 1755 Key = JA.getKind(); 1756 1757 Tool *&T = Tools[Key]; 1758 if (!T) { 1759 switch (Key) { 1760 case Action::AssembleJobClass: 1761 T = new tools::minix::Assemble(*this); break; 1762 case Action::LinkJobClass: 1763 T = new tools::minix::Link(*this); break; 1764 default: 1765 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1766 } 1767 } 1768 1769 return *T; 1770} 1771 1772/// AuroraUX - AuroraUX tool chain which can call as(1) and ld(1) directly. 1773 1774AuroraUX::AuroraUX(const Driver &D, const llvm::Triple& Triple, 1775 const ArgList &Args) 1776 : Generic_GCC(D, Triple, Args) { 1777 1778 getProgramPaths().push_back(getDriver().getInstalledDir()); 1779 if (getDriver().getInstalledDir() != getDriver().Dir) 1780 getProgramPaths().push_back(getDriver().Dir); 1781 1782 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1783 getFilePaths().push_back("/usr/lib"); 1784 getFilePaths().push_back("/usr/sfw/lib"); 1785 getFilePaths().push_back("/opt/gcc4/lib"); 1786 getFilePaths().push_back("/opt/gcc4/lib/gcc/i386-pc-solaris2.11/4.2.4"); 1787 1788} 1789 1790Tool &AuroraUX::SelectTool(const Compilation &C, const JobAction &JA, 1791 const ActionList &Inputs) const { 1792 Action::ActionClass Key; 1793 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1794 Key = Action::AnalyzeJobClass; 1795 else 1796 Key = JA.getKind(); 1797 1798 Tool *&T = Tools[Key]; 1799 if (!T) { 1800 switch (Key) { 1801 case Action::AssembleJobClass: 1802 T = new tools::auroraux::Assemble(*this); break; 1803 case Action::LinkJobClass: 1804 T = new tools::auroraux::Link(*this); break; 1805 default: 1806 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1807 } 1808 } 1809 1810 return *T; 1811} 1812 1813/// Solaris - Solaris tool chain which can call as(1) and ld(1) directly. 1814 1815Solaris::Solaris(const Driver &D, const llvm::Triple& Triple, 1816 const ArgList &Args) 1817 : Generic_GCC(D, Triple, Args) { 1818 1819 getProgramPaths().push_back(getDriver().getInstalledDir()); 1820 if (getDriver().getInstalledDir() != getDriver().Dir) 1821 getProgramPaths().push_back(getDriver().Dir); 1822 1823 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1824 getFilePaths().push_back("/usr/lib"); 1825} 1826 1827Tool &Solaris::SelectTool(const Compilation &C, const JobAction &JA, 1828 const ActionList &Inputs) const { 1829 Action::ActionClass Key; 1830 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1831 Key = Action::AnalyzeJobClass; 1832 else 1833 Key = JA.getKind(); 1834 1835 Tool *&T = Tools[Key]; 1836 if (!T) { 1837 switch (Key) { 1838 case Action::AssembleJobClass: 1839 T = new tools::solaris::Assemble(*this); break; 1840 case Action::LinkJobClass: 1841 T = new tools::solaris::Link(*this); break; 1842 default: 1843 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1844 } 1845 } 1846 1847 return *T; 1848} 1849 1850/// Linux toolchain (very bare-bones at the moment). 1851 1852enum LinuxDistro { 1853 ArchLinux, 1854 DebianLenny, 1855 DebianSqueeze, 1856 DebianWheezy, 1857 Exherbo, 1858 RHEL4, 1859 RHEL5, 1860 RHEL6, 1861 Fedora13, 1862 Fedora14, 1863 Fedora15, 1864 Fedora16, 1865 FedoraRawhide, 1866 OpenSuse11_3, 1867 OpenSuse11_4, 1868 OpenSuse12_1, 1869 OpenSuse12_2, 1870 UbuntuHardy, 1871 UbuntuIntrepid, 1872 UbuntuJaunty, 1873 UbuntuKarmic, 1874 UbuntuLucid, 1875 UbuntuMaverick, 1876 UbuntuNatty, 1877 UbuntuOneiric, 1878 UbuntuPrecise, 1879 UnknownDistro 1880}; 1881 1882static bool IsRedhat(enum LinuxDistro Distro) { 1883 return (Distro >= Fedora13 && Distro <= FedoraRawhide) || 1884 (Distro >= RHEL4 && Distro <= RHEL6); 1885} 1886 1887static bool IsOpenSuse(enum LinuxDistro Distro) { 1888 return Distro >= OpenSuse11_3 && Distro <= OpenSuse12_2; 1889} 1890 1891static bool IsDebian(enum LinuxDistro Distro) { 1892 return Distro >= DebianLenny && Distro <= DebianWheezy; 1893} 1894 1895static bool IsUbuntu(enum LinuxDistro Distro) { 1896 return Distro >= UbuntuHardy && Distro <= UbuntuPrecise; 1897} 1898 1899static LinuxDistro DetectLinuxDistro(llvm::Triple::ArchType Arch) { 1900 OwningPtr<llvm::MemoryBuffer> File; 1901 if (!llvm::MemoryBuffer::getFile("/etc/lsb-release", File)) { 1902 StringRef Data = File.get()->getBuffer(); 1903 SmallVector<StringRef, 8> Lines; 1904 Data.split(Lines, "\n"); 1905 LinuxDistro Version = UnknownDistro; 1906 for (unsigned i = 0, s = Lines.size(); i != s; ++i) 1907 if (Version == UnknownDistro && Lines[i].startswith("DISTRIB_CODENAME=")) 1908 Version = llvm::StringSwitch<LinuxDistro>(Lines[i].substr(17)) 1909 .Case("hardy", UbuntuHardy) 1910 .Case("intrepid", UbuntuIntrepid) 1911 .Case("jaunty", UbuntuJaunty) 1912 .Case("karmic", UbuntuKarmic) 1913 .Case("lucid", UbuntuLucid) 1914 .Case("maverick", UbuntuMaverick) 1915 .Case("natty", UbuntuNatty) 1916 .Case("oneiric", UbuntuOneiric) 1917 .Case("precise", UbuntuPrecise) 1918 .Default(UnknownDistro); 1919 return Version; 1920 } 1921 1922 if (!llvm::MemoryBuffer::getFile("/etc/redhat-release", File)) { 1923 StringRef Data = File.get()->getBuffer(); 1924 if (Data.startswith("Fedora release 16")) 1925 return Fedora16; 1926 else if (Data.startswith("Fedora release 15")) 1927 return Fedora15; 1928 else if (Data.startswith("Fedora release 14")) 1929 return Fedora14; 1930 else if (Data.startswith("Fedora release 13")) 1931 return Fedora13; 1932 else if (Data.startswith("Fedora release") && 1933 Data.find("Rawhide") != StringRef::npos) 1934 return FedoraRawhide; 1935 else if (Data.startswith("Red Hat Enterprise Linux") && 1936 Data.find("release 6") != StringRef::npos) 1937 return RHEL6; 1938 else if ((Data.startswith("Red Hat Enterprise Linux") || 1939 Data.startswith("CentOS")) && 1940 Data.find("release 5") != StringRef::npos) 1941 return RHEL5; 1942 else if ((Data.startswith("Red Hat Enterprise Linux") || 1943 Data.startswith("CentOS")) && 1944 Data.find("release 4") != StringRef::npos) 1945 return RHEL4; 1946 return UnknownDistro; 1947 } 1948 1949 if (!llvm::MemoryBuffer::getFile("/etc/debian_version", File)) { 1950 StringRef Data = File.get()->getBuffer(); 1951 if (Data[0] == '5') 1952 return DebianLenny; 1953 else if (Data.startswith("squeeze/sid") || Data[0] == '6') 1954 return DebianSqueeze; 1955 else if (Data.startswith("wheezy/sid") || Data[0] == '7') 1956 return DebianWheezy; 1957 return UnknownDistro; 1958 } 1959 1960 if (!llvm::MemoryBuffer::getFile("/etc/SuSE-release", File)) 1961 return llvm::StringSwitch<LinuxDistro>(File.get()->getBuffer()) 1962 .StartsWith("openSUSE 11.3", OpenSuse11_3) 1963 .StartsWith("openSUSE 11.4", OpenSuse11_4) 1964 .StartsWith("openSUSE 12.1", OpenSuse12_1) 1965 .StartsWith("openSUSE 12.2", OpenSuse12_2) 1966 .Default(UnknownDistro); 1967 1968 bool Exists; 1969 if (!llvm::sys::fs::exists("/etc/exherbo-release", Exists) && Exists) 1970 return Exherbo; 1971 1972 if (!llvm::sys::fs::exists("/etc/arch-release", Exists) && Exists) 1973 return ArchLinux; 1974 1975 return UnknownDistro; 1976} 1977 1978/// \brief Get our best guess at the multiarch triple for a target. 1979/// 1980/// Debian-based systems are starting to use a multiarch setup where they use 1981/// a target-triple directory in the library and header search paths. 1982/// Unfortunately, this triple does not align with the vanilla target triple, 1983/// so we provide a rough mapping here. 1984static std::string getMultiarchTriple(const llvm::Triple TargetTriple, 1985 StringRef SysRoot) { 1986 // For most architectures, just use whatever we have rather than trying to be 1987 // clever. 1988 switch (TargetTriple.getArch()) { 1989 default: 1990 return TargetTriple.str(); 1991 1992 // We use the existence of '/lib/<triple>' as a directory to detect some 1993 // common linux triples that don't quite match the Clang triple for both 1994 // 32-bit and 64-bit targets. Multiarch fixes its install triples to these 1995 // regardless of what the actual target triple is. 1996 case llvm::Triple::x86: 1997 if (llvm::sys::fs::exists(SysRoot + "/lib/i386-linux-gnu")) 1998 return "i386-linux-gnu"; 1999 return TargetTriple.str(); 2000 case llvm::Triple::x86_64: 2001 if (llvm::sys::fs::exists(SysRoot + "/lib/x86_64-linux-gnu")) 2002 return "x86_64-linux-gnu"; 2003 return TargetTriple.str(); 2004 case llvm::Triple::mips: 2005 if (llvm::sys::fs::exists(SysRoot + "/lib/mips-linux-gnu")) 2006 return "mips-linux-gnu"; 2007 return TargetTriple.str(); 2008 case llvm::Triple::mipsel: 2009 if (llvm::sys::fs::exists(SysRoot + "/lib/mipsel-linux-gnu")) 2010 return "mipsel-linux-gnu"; 2011 return TargetTriple.str(); 2012 case llvm::Triple::ppc: 2013 if (llvm::sys::fs::exists(SysRoot + "/lib/powerpc-linux-gnu")) 2014 return "powerpc-linux-gnu"; 2015 return TargetTriple.str(); 2016 case llvm::Triple::ppc64: 2017 if (llvm::sys::fs::exists(SysRoot + "/lib/powerpc64-linux-gnu")) 2018 return "powerpc64-linux-gnu"; 2019 return TargetTriple.str(); 2020 } 2021} 2022 2023static void addPathIfExists(Twine Path, ToolChain::path_list &Paths) { 2024 if (llvm::sys::fs::exists(Path)) Paths.push_back(Path.str()); 2025} 2026 2027Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) 2028 : Generic_ELF(D, Triple, Args) { 2029 llvm::Triple::ArchType Arch = Triple.getArch(); 2030 const std::string &SysRoot = getDriver().SysRoot; 2031 2032 // OpenSuse stores the linker with the compiler, add that to the search 2033 // path. 2034 ToolChain::path_list &PPaths = getProgramPaths(); 2035 PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" + 2036 GCCInstallation.getTriple().str() + "/bin").str()); 2037 2038 Linker = GetProgramPath("ld"); 2039 2040 LinuxDistro Distro = DetectLinuxDistro(Arch); 2041 2042 if (IsOpenSuse(Distro) || IsUbuntu(Distro)) { 2043 ExtraOpts.push_back("-z"); 2044 ExtraOpts.push_back("relro"); 2045 } 2046 2047 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb) 2048 ExtraOpts.push_back("-X"); 2049 2050 const bool IsMips = Arch == llvm::Triple::mips || 2051 Arch == llvm::Triple::mipsel || 2052 Arch == llvm::Triple::mips64 || 2053 Arch == llvm::Triple::mips64el; 2054 2055 const bool IsAndroid = Triple.getEnvironment() == llvm::Triple::ANDROIDEABI; 2056 2057 // Do not use 'gnu' hash style for Mips targets because .gnu.hash 2058 // and the MIPS ABI require .dynsym to be sorted in different ways. 2059 // .gnu.hash needs symbols to be grouped by hash code whereas the MIPS 2060 // ABI requires a mapping between the GOT and the symbol table. 2061 // Android loader does not support .gnu.hash. 2062 if (!IsMips && !IsAndroid) { 2063 if (IsRedhat(Distro) || IsOpenSuse(Distro) || 2064 (IsUbuntu(Distro) && Distro >= UbuntuMaverick)) 2065 ExtraOpts.push_back("--hash-style=gnu"); 2066 2067 if (IsDebian(Distro) || IsOpenSuse(Distro) || Distro == UbuntuLucid || 2068 Distro == UbuntuJaunty || Distro == UbuntuKarmic) 2069 ExtraOpts.push_back("--hash-style=both"); 2070 } 2071 2072 if (IsRedhat(Distro)) 2073 ExtraOpts.push_back("--no-add-needed"); 2074 2075 if (Distro == DebianSqueeze || Distro == DebianWheezy || 2076 IsOpenSuse(Distro) || 2077 (IsRedhat(Distro) && Distro != RHEL4 && Distro != RHEL5) || 2078 (IsUbuntu(Distro) && Distro >= UbuntuKarmic)) 2079 ExtraOpts.push_back("--build-id"); 2080 2081 if (IsOpenSuse(Distro)) 2082 ExtraOpts.push_back("--enable-new-dtags"); 2083 2084 // The selection of paths to try here is designed to match the patterns which 2085 // the GCC driver itself uses, as this is part of the GCC-compatible driver. 2086 // This was determined by running GCC in a fake filesystem, creating all 2087 // possible permutations of these directories, and seeing which ones it added 2088 // to the link paths. 2089 path_list &Paths = getFilePaths(); 2090 2091 const std::string Multilib = Triple.isArch32Bit() ? "lib32" : "lib64"; 2092 const std::string MultiarchTriple = getMultiarchTriple(Triple, SysRoot); 2093 2094 // Add the multilib suffixed paths where they are available. 2095 if (GCCInstallation.isValid()) { 2096 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2097 const std::string &LibPath = GCCInstallation.getParentLibPath(); 2098 addPathIfExists((GCCInstallation.getInstallPath() + 2099 GCCInstallation.getMultiarchSuffix()), 2100 Paths); 2101 2102 // If the GCC installation we found is inside of the sysroot, we want to 2103 // prefer libraries installed in the parent prefix of the GCC installation. 2104 // It is important to *not* use these paths when the GCC installation is 2105 // outside of the system root as that can pick up unintended libraries. 2106 // This usually happens when there is an external cross compiler on the 2107 // host system, and a more minimal sysroot available that is the target of 2108 // the cross. 2109 if (StringRef(LibPath).startswith(SysRoot)) { 2110 addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib/../" + Multilib, 2111 Paths); 2112 addPathIfExists(LibPath + "/" + MultiarchTriple, Paths); 2113 addPathIfExists(LibPath + "/../" + Multilib, Paths); 2114 } 2115 } 2116 addPathIfExists(SysRoot + "/lib/" + MultiarchTriple, Paths); 2117 addPathIfExists(SysRoot + "/lib/../" + Multilib, Paths); 2118 addPathIfExists(SysRoot + "/usr/lib/" + MultiarchTriple, Paths); 2119 addPathIfExists(SysRoot + "/usr/lib/../" + Multilib, Paths); 2120 2121 // Try walking via the GCC triple path in case of multiarch GCC 2122 // installations with strange symlinks. 2123 if (GCCInstallation.isValid()) 2124 addPathIfExists(SysRoot + "/usr/lib/" + GCCInstallation.getTriple().str() + 2125 "/../../" + Multilib, Paths); 2126 2127 // Add the non-multilib suffixed paths (if potentially different). 2128 if (GCCInstallation.isValid()) { 2129 const std::string &LibPath = GCCInstallation.getParentLibPath(); 2130 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2131 if (!GCCInstallation.getMultiarchSuffix().empty()) 2132 addPathIfExists(GCCInstallation.getInstallPath(), Paths); 2133 2134 if (StringRef(LibPath).startswith(SysRoot)) { 2135 addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib", Paths); 2136 addPathIfExists(LibPath, Paths); 2137 } 2138 } 2139 addPathIfExists(SysRoot + "/lib", Paths); 2140 addPathIfExists(SysRoot + "/usr/lib", Paths); 2141} 2142 2143bool Linux::HasNativeLLVMSupport() const { 2144 return true; 2145} 2146 2147Tool &Linux::SelectTool(const Compilation &C, const JobAction &JA, 2148 const ActionList &Inputs) const { 2149 Action::ActionClass Key; 2150 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 2151 Key = Action::AnalyzeJobClass; 2152 else 2153 Key = JA.getKind(); 2154 2155 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 2156 options::OPT_no_integrated_as, 2157 IsIntegratedAssemblerDefault()); 2158 2159 Tool *&T = Tools[Key]; 2160 if (!T) { 2161 switch (Key) { 2162 case Action::AssembleJobClass: 2163 if (UseIntegratedAs) 2164 T = new tools::ClangAs(*this); 2165 else 2166 T = new tools::linuxtools::Assemble(*this); 2167 break; 2168 case Action::LinkJobClass: 2169 T = new tools::linuxtools::Link(*this); break; 2170 default: 2171 T = &Generic_GCC::SelectTool(C, JA, Inputs); 2172 } 2173 } 2174 2175 return *T; 2176} 2177 2178void Linux::AddClangSystemIncludeArgs(const ArgList &DriverArgs, 2179 ArgStringList &CC1Args) const { 2180 const Driver &D = getDriver(); 2181 2182 if (DriverArgs.hasArg(options::OPT_nostdinc)) 2183 return; 2184 2185 if (!DriverArgs.hasArg(options::OPT_nostdlibinc)) 2186 addSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/usr/local/include"); 2187 2188 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) { 2189 llvm::sys::Path P(D.ResourceDir); 2190 P.appendComponent("include"); 2191 addSystemInclude(DriverArgs, CC1Args, P.str()); 2192 } 2193 2194 if (DriverArgs.hasArg(options::OPT_nostdlibinc)) 2195 return; 2196 2197 // Check for configure-time C include directories. 2198 StringRef CIncludeDirs(C_INCLUDE_DIRS); 2199 if (CIncludeDirs != "") { 2200 SmallVector<StringRef, 5> dirs; 2201 CIncludeDirs.split(dirs, ":"); 2202 for (SmallVectorImpl<StringRef>::iterator I = dirs.begin(), E = dirs.end(); 2203 I != E; ++I) { 2204 StringRef Prefix = llvm::sys::path::is_absolute(*I) ? D.SysRoot : ""; 2205 addExternCSystemInclude(DriverArgs, CC1Args, Prefix + *I); 2206 } 2207 return; 2208 } 2209 2210 // Lacking those, try to detect the correct set of system includes for the 2211 // target triple. 2212 2213 // Implement generic Debian multiarch support. 2214 const StringRef X86_64MultiarchIncludeDirs[] = { 2215 "/usr/include/x86_64-linux-gnu", 2216 2217 // FIXME: These are older forms of multiarch. It's not clear that they're 2218 // in use in any released version of Debian, so we should consider 2219 // removing them. 2220 "/usr/include/i686-linux-gnu/64", 2221 "/usr/include/i486-linux-gnu/64" 2222 }; 2223 const StringRef X86MultiarchIncludeDirs[] = { 2224 "/usr/include/i386-linux-gnu", 2225 2226 // FIXME: These are older forms of multiarch. It's not clear that they're 2227 // in use in any released version of Debian, so we should consider 2228 // removing them. 2229 "/usr/include/x86_64-linux-gnu/32", 2230 "/usr/include/i686-linux-gnu", 2231 "/usr/include/i486-linux-gnu" 2232 }; 2233 const StringRef ARMMultiarchIncludeDirs[] = { 2234 "/usr/include/arm-linux-gnueabi" 2235 }; 2236 const StringRef MIPSMultiarchIncludeDirs[] = { 2237 "/usr/include/mips-linux-gnu" 2238 }; 2239 const StringRef MIPSELMultiarchIncludeDirs[] = { 2240 "/usr/include/mipsel-linux-gnu" 2241 }; 2242 const StringRef PPCMultiarchIncludeDirs[] = { 2243 "/usr/include/powerpc-linux-gnu" 2244 }; 2245 const StringRef PPC64MultiarchIncludeDirs[] = { 2246 "/usr/include/powerpc64-linux-gnu" 2247 }; 2248 ArrayRef<StringRef> MultiarchIncludeDirs; 2249 if (getTriple().getArch() == llvm::Triple::x86_64) { 2250 MultiarchIncludeDirs = X86_64MultiarchIncludeDirs; 2251 } else if (getTriple().getArch() == llvm::Triple::x86) { 2252 MultiarchIncludeDirs = X86MultiarchIncludeDirs; 2253 } else if (getTriple().getArch() == llvm::Triple::arm) { 2254 MultiarchIncludeDirs = ARMMultiarchIncludeDirs; 2255 } else if (getTriple().getArch() == llvm::Triple::mips) { 2256 MultiarchIncludeDirs = MIPSMultiarchIncludeDirs; 2257 } else if (getTriple().getArch() == llvm::Triple::mipsel) { 2258 MultiarchIncludeDirs = MIPSELMultiarchIncludeDirs; 2259 } else if (getTriple().getArch() == llvm::Triple::ppc) { 2260 MultiarchIncludeDirs = PPCMultiarchIncludeDirs; 2261 } else if (getTriple().getArch() == llvm::Triple::ppc64) { 2262 MultiarchIncludeDirs = PPC64MultiarchIncludeDirs; 2263 } 2264 for (ArrayRef<StringRef>::iterator I = MultiarchIncludeDirs.begin(), 2265 E = MultiarchIncludeDirs.end(); 2266 I != E; ++I) { 2267 if (llvm::sys::fs::exists(D.SysRoot + *I)) { 2268 addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + *I); 2269 break; 2270 } 2271 } 2272 2273 if (getTriple().getOS() == llvm::Triple::RTEMS) 2274 return; 2275 2276 // Add an include of '/include' directly. This isn't provided by default by 2277 // system GCCs, but is often used with cross-compiling GCCs, and harmless to 2278 // add even when Clang is acting as-if it were a system compiler. 2279 addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/include"); 2280 2281 addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/usr/include"); 2282} 2283 2284/// \brief Helper to add the thre variant paths for a libstdc++ installation. 2285/*static*/ bool Linux::addLibStdCXXIncludePaths(Twine Base, Twine TargetArchDir, 2286 const ArgList &DriverArgs, 2287 ArgStringList &CC1Args) { 2288 if (!llvm::sys::fs::exists(Base)) 2289 return false; 2290 addSystemInclude(DriverArgs, CC1Args, Base); 2291 addSystemInclude(DriverArgs, CC1Args, Base + "/" + TargetArchDir); 2292 addSystemInclude(DriverArgs, CC1Args, Base + "/backward"); 2293 return true; 2294} 2295 2296void Linux::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 2297 ArgStringList &CC1Args) const { 2298 if (DriverArgs.hasArg(options::OPT_nostdlibinc) || 2299 DriverArgs.hasArg(options::OPT_nostdincxx)) 2300 return; 2301 2302 // Check if libc++ has been enabled and provide its include paths if so. 2303 if (GetCXXStdlibType(DriverArgs) == ToolChain::CST_Libcxx) { 2304 // libc++ is always installed at a fixed path on Linux currently. 2305 addSystemInclude(DriverArgs, CC1Args, 2306 getDriver().SysRoot + "/usr/include/c++/v1"); 2307 return; 2308 } 2309 2310 // We need a detected GCC installation on Linux to provide libstdc++'s 2311 // headers. We handled the libc++ case above. 2312 if (!GCCInstallation.isValid()) 2313 return; 2314 2315 // By default, look for the C++ headers in an include directory adjacent to 2316 // the lib directory of the GCC installation. Note that this is expect to be 2317 // equivalent to '/usr/include/c++/X.Y' in almost all cases. 2318 StringRef LibDir = GCCInstallation.getParentLibPath(); 2319 StringRef InstallDir = GCCInstallation.getInstallPath(); 2320 StringRef Version = GCCInstallation.getVersion(); 2321 if (!addLibStdCXXIncludePaths(LibDir + "/../include/c++/" + Version, 2322 (GCCInstallation.getTriple().str() + 2323 GCCInstallation.getMultiarchSuffix()), 2324 DriverArgs, CC1Args)) { 2325 // Gentoo is weird and places its headers inside the GCC install, so if the 2326 // first attempt to find the headers fails, try this pattern. 2327 addLibStdCXXIncludePaths(InstallDir + "/include/g++-v4", 2328 (GCCInstallation.getTriple().str() + 2329 GCCInstallation.getMultiarchSuffix()), 2330 DriverArgs, CC1Args); 2331 } 2332} 2333 2334/// DragonFly - DragonFly tool chain which can call as(1) and ld(1) directly. 2335 2336DragonFly::DragonFly(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 2337 : Generic_ELF(D, Triple, Args) { 2338 2339 // Path mangling to find libexec 2340 getProgramPaths().push_back(getDriver().getInstalledDir()); 2341 if (getDriver().getInstalledDir() != getDriver().Dir) 2342 getProgramPaths().push_back(getDriver().Dir); 2343 2344 getFilePaths().push_back(getDriver().Dir + "/../lib"); 2345 getFilePaths().push_back("/usr/lib"); 2346 getFilePaths().push_back("/usr/lib/gcc41"); 2347} 2348 2349Tool &DragonFly::SelectTool(const Compilation &C, const JobAction &JA, 2350 const ActionList &Inputs) const { 2351 Action::ActionClass Key; 2352 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 2353 Key = Action::AnalyzeJobClass; 2354 else 2355 Key = JA.getKind(); 2356 2357 Tool *&T = Tools[Key]; 2358 if (!T) { 2359 switch (Key) { 2360 case Action::AssembleJobClass: 2361 T = new tools::dragonfly::Assemble(*this); break; 2362 case Action::LinkJobClass: 2363 T = new tools::dragonfly::Link(*this); break; 2364 default: 2365 T = &Generic_GCC::SelectTool(C, JA, Inputs); 2366 } 2367 } 2368 2369 return *T; 2370} 2371