ToolChains.cpp revision 235864
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 AddDeploymentTarget(*DAL); 960 961 // Validate the C++ standard library choice. 962 CXXStdlibType Type = GetCXXStdlibType(*DAL); 963 if (Type == ToolChain::CST_Libcxx) { 964 switch (LibCXXForSimulator) { 965 case LibCXXSimulator_None: 966 // Handle non-simulator cases. 967 if (isTargetIPhoneOS()) { 968 if (isIPhoneOSVersionLT(5, 0)) { 969 getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment) 970 << "iOS 5.0"; 971 } 972 } 973 break; 974 case LibCXXSimulator_NotAvailable: 975 getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment) 976 << "iOS 5.0"; 977 break; 978 case LibCXXSimulator_Available: 979 break; 980 } 981 } 982 983 return DAL; 984} 985 986bool Darwin::IsUnwindTablesDefault() const { 987 // FIXME: Gross; we should probably have some separate target 988 // definition, possibly even reusing the one in clang. 989 return getArchName() == "x86_64"; 990} 991 992bool Darwin::UseDwarfDebugFlags() const { 993 if (const char *S = ::getenv("RC_DEBUG_OPTIONS")) 994 return S[0] != '\0'; 995 return false; 996} 997 998bool Darwin::UseSjLjExceptions() const { 999 // Darwin uses SjLj exceptions on ARM. 1000 return (getTriple().getArch() == llvm::Triple::arm || 1001 getTriple().getArch() == llvm::Triple::thumb); 1002} 1003 1004const char *Darwin::GetDefaultRelocationModel() const { 1005 return "pic"; 1006} 1007 1008const char *Darwin::GetForcedPicModel() const { 1009 if (getArchName() == "x86_64") 1010 return "pic"; 1011 return 0; 1012} 1013 1014bool Darwin::SupportsProfiling() const { 1015 // Profiling instrumentation is only supported on x86. 1016 return getArchName() == "i386" || getArchName() == "x86_64"; 1017} 1018 1019bool Darwin::SupportsObjCGC() const { 1020 // Garbage collection is supported everywhere except on iPhone OS. 1021 return !isTargetIPhoneOS(); 1022} 1023 1024bool Darwin::SupportsObjCARC() const { 1025 return isTargetIPhoneOS() || !isMacosxVersionLT(10, 6); 1026} 1027 1028std::string 1029Darwin_Generic_GCC::ComputeEffectiveClangTriple(const ArgList &Args, 1030 types::ID InputType) const { 1031 return ComputeLLVMTriple(Args, InputType); 1032} 1033 1034/// Generic_GCC - A tool chain using the 'gcc' command to perform 1035/// all subcommands; this relies on gcc translating the majority of 1036/// command line options. 1037 1038/// \brief Parse a GCCVersion object out of a string of text. 1039/// 1040/// This is the primary means of forming GCCVersion objects. 1041/*static*/ 1042Generic_GCC::GCCVersion Linux::GCCVersion::Parse(StringRef VersionText) { 1043 const GCCVersion BadVersion = { VersionText.str(), -1, -1, -1, "" }; 1044 std::pair<StringRef, StringRef> First = VersionText.split('.'); 1045 std::pair<StringRef, StringRef> Second = First.second.split('.'); 1046 1047 GCCVersion GoodVersion = { VersionText.str(), -1, -1, -1, "" }; 1048 if (First.first.getAsInteger(10, GoodVersion.Major) || 1049 GoodVersion.Major < 0) 1050 return BadVersion; 1051 if (Second.first.getAsInteger(10, GoodVersion.Minor) || 1052 GoodVersion.Minor < 0) 1053 return BadVersion; 1054 1055 // First look for a number prefix and parse that if present. Otherwise just 1056 // stash the entire patch string in the suffix, and leave the number 1057 // unspecified. This covers versions strings such as: 1058 // 4.4 1059 // 4.4.0 1060 // 4.4.x 1061 // 4.4.2-rc4 1062 // 4.4.x-patched 1063 // And retains any patch number it finds. 1064 StringRef PatchText = GoodVersion.PatchSuffix = Second.second.str(); 1065 if (!PatchText.empty()) { 1066 if (unsigned EndNumber = PatchText.find_first_not_of("0123456789")) { 1067 // Try to parse the number and any suffix. 1068 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) || 1069 GoodVersion.Patch < 0) 1070 return BadVersion; 1071 GoodVersion.PatchSuffix = PatchText.substr(EndNumber).str(); 1072 } 1073 } 1074 1075 return GoodVersion; 1076} 1077 1078/// \brief Less-than for GCCVersion, implementing a Strict Weak Ordering. 1079bool Generic_GCC::GCCVersion::operator<(const GCCVersion &RHS) const { 1080 if (Major < RHS.Major) return true; if (Major > RHS.Major) return false; 1081 if (Minor < RHS.Minor) return true; if (Minor > RHS.Minor) return false; 1082 1083 // Note that we rank versions with *no* patch specified is better than ones 1084 // hard-coding a patch version. Thus if the RHS has no patch, it always 1085 // wins, and the LHS only wins if it has no patch and the RHS does have 1086 // a patch. 1087 if (RHS.Patch == -1) return true; if (Patch == -1) return false; 1088 if (Patch < RHS.Patch) return true; if (Patch > RHS.Patch) return false; 1089 if (PatchSuffix == RHS.PatchSuffix) return false; 1090 1091 // Finally, between completely tied version numbers, the version with the 1092 // suffix loses as we prefer full releases. 1093 if (RHS.PatchSuffix.empty()) return true; 1094 return false; 1095} 1096 1097static StringRef getGCCToolchainDir(const ArgList &Args) { 1098 const Arg *A = Args.getLastArg(options::OPT_gcc_toolchain); 1099 if (A) 1100 return A->getValue(Args); 1101 return GCC_INSTALL_PREFIX; 1102} 1103 1104/// \brief Construct a GCCInstallationDetector from the driver. 1105/// 1106/// This performs all of the autodetection and sets up the various paths. 1107/// Once constructed, a GCCInstallationDetector is essentially immutable. 1108/// 1109/// FIXME: We shouldn't need an explicit TargetTriple parameter here, and 1110/// should instead pull the target out of the driver. This is currently 1111/// necessary because the driver doesn't store the final version of the target 1112/// triple. 1113Generic_GCC::GCCInstallationDetector::GCCInstallationDetector( 1114 const Driver &D, 1115 const llvm::Triple &TargetTriple, 1116 const ArgList &Args) 1117 : IsValid(false) { 1118 llvm::Triple MultiarchTriple 1119 = TargetTriple.isArch32Bit() ? TargetTriple.get64BitArchVariant() 1120 : TargetTriple.get32BitArchVariant(); 1121 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 1122 // The library directories which may contain GCC installations. 1123 SmallVector<StringRef, 4> CandidateLibDirs, CandidateMultiarchLibDirs; 1124 // The compatible GCC triples for this particular architecture. 1125 SmallVector<StringRef, 10> CandidateTripleAliases; 1126 SmallVector<StringRef, 10> CandidateMultiarchTripleAliases; 1127 CollectLibDirsAndTriples(TargetTriple, MultiarchTriple, CandidateLibDirs, 1128 CandidateTripleAliases, 1129 CandidateMultiarchLibDirs, 1130 CandidateMultiarchTripleAliases); 1131 1132 // Compute the set of prefixes for our search. 1133 SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(), 1134 D.PrefixDirs.end()); 1135 1136 StringRef GCCToolchainDir = getGCCToolchainDir(Args); 1137 if (GCCToolchainDir != "") { 1138 if (GCCToolchainDir.back() == '/') 1139 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the / 1140 1141 Prefixes.push_back(GCCToolchainDir); 1142 } else { 1143 Prefixes.push_back(D.SysRoot); 1144 Prefixes.push_back(D.SysRoot + "/usr"); 1145 Prefixes.push_back(D.InstalledDir + "/.."); 1146 } 1147 1148 // Loop over the various components which exist and select the best GCC 1149 // installation available. GCC installs are ranked by version number. 1150 Version = GCCVersion::Parse("0.0.0"); 1151 for (unsigned i = 0, ie = Prefixes.size(); i < ie; ++i) { 1152 if (!llvm::sys::fs::exists(Prefixes[i])) 1153 continue; 1154 for (unsigned j = 0, je = CandidateLibDirs.size(); j < je; ++j) { 1155 const std::string LibDir = Prefixes[i] + CandidateLibDirs[j].str(); 1156 if (!llvm::sys::fs::exists(LibDir)) 1157 continue; 1158 for (unsigned k = 0, ke = CandidateTripleAliases.size(); k < ke; ++k) 1159 ScanLibDirForGCCTriple(TargetArch, LibDir, CandidateTripleAliases[k]); 1160 } 1161 for (unsigned j = 0, je = CandidateMultiarchLibDirs.size(); j < je; ++j) { 1162 const std::string LibDir 1163 = Prefixes[i] + CandidateMultiarchLibDirs[j].str(); 1164 if (!llvm::sys::fs::exists(LibDir)) 1165 continue; 1166 for (unsigned k = 0, ke = CandidateMultiarchTripleAliases.size(); k < ke; 1167 ++k) 1168 ScanLibDirForGCCTriple(TargetArch, LibDir, 1169 CandidateMultiarchTripleAliases[k], 1170 /*NeedsMultiarchSuffix=*/true); 1171 } 1172 } 1173} 1174 1175/*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples( 1176 const llvm::Triple &TargetTriple, 1177 const llvm::Triple &MultiarchTriple, 1178 SmallVectorImpl<StringRef> &LibDirs, 1179 SmallVectorImpl<StringRef> &TripleAliases, 1180 SmallVectorImpl<StringRef> &MultiarchLibDirs, 1181 SmallVectorImpl<StringRef> &MultiarchTripleAliases) { 1182 // Declare a bunch of static data sets that we'll select between below. These 1183 // are specifically designed to always refer to string literals to avoid any 1184 // lifetime or initialization issues. 1185 static const char *const ARMLibDirs[] = { "/lib" }; 1186 static const char *const ARMTriples[] = { 1187 "arm-linux-gnueabi", 1188 "arm-linux-androideabi" 1189 }; 1190 1191 static const char *const X86_64LibDirs[] = { "/lib64", "/lib" }; 1192 static const char *const X86_64Triples[] = { 1193 "x86_64-linux-gnu", 1194 "x86_64-unknown-linux-gnu", 1195 "x86_64-pc-linux-gnu", 1196 "x86_64-redhat-linux6E", 1197 "x86_64-redhat-linux", 1198 "x86_64-suse-linux", 1199 "x86_64-manbo-linux-gnu", 1200 "x86_64-linux-gnu", 1201 "x86_64-slackware-linux" 1202 }; 1203 static const char *const X86LibDirs[] = { "/lib32", "/lib" }; 1204 static const char *const X86Triples[] = { 1205 "i686-linux-gnu", 1206 "i686-pc-linux-gnu", 1207 "i486-linux-gnu", 1208 "i386-linux-gnu", 1209 "i686-redhat-linux", 1210 "i586-redhat-linux", 1211 "i386-redhat-linux", 1212 "i586-suse-linux", 1213 "i486-slackware-linux" 1214 }; 1215 1216 static const char *const MIPSLibDirs[] = { "/lib" }; 1217 static const char *const MIPSTriples[] = { "mips-linux-gnu" }; 1218 static const char *const MIPSELLibDirs[] = { "/lib" }; 1219 static const char *const MIPSELTriples[] = { "mipsel-linux-gnu" }; 1220 1221 static const char *const PPCLibDirs[] = { "/lib32", "/lib" }; 1222 static const char *const PPCTriples[] = { 1223 "powerpc-linux-gnu", 1224 "powerpc-unknown-linux-gnu", 1225 "powerpc-suse-linux" 1226 }; 1227 static const char *const PPC64LibDirs[] = { "/lib64", "/lib" }; 1228 static const char *const PPC64Triples[] = { 1229 "powerpc64-linux-gnu", 1230 "powerpc64-unknown-linux-gnu", 1231 "powerpc64-suse-linux", 1232 "ppc64-redhat-linux" 1233 }; 1234 1235 switch (TargetTriple.getArch()) { 1236 case llvm::Triple::arm: 1237 case llvm::Triple::thumb: 1238 LibDirs.append(ARMLibDirs, ARMLibDirs + llvm::array_lengthof(ARMLibDirs)); 1239 TripleAliases.append( 1240 ARMTriples, ARMTriples + llvm::array_lengthof(ARMTriples)); 1241 break; 1242 case llvm::Triple::x86_64: 1243 LibDirs.append( 1244 X86_64LibDirs, X86_64LibDirs + llvm::array_lengthof(X86_64LibDirs)); 1245 TripleAliases.append( 1246 X86_64Triples, X86_64Triples + llvm::array_lengthof(X86_64Triples)); 1247 MultiarchLibDirs.append( 1248 X86LibDirs, X86LibDirs + llvm::array_lengthof(X86LibDirs)); 1249 MultiarchTripleAliases.append( 1250 X86Triples, X86Triples + llvm::array_lengthof(X86Triples)); 1251 break; 1252 case llvm::Triple::x86: 1253 LibDirs.append(X86LibDirs, X86LibDirs + llvm::array_lengthof(X86LibDirs)); 1254 TripleAliases.append( 1255 X86Triples, X86Triples + llvm::array_lengthof(X86Triples)); 1256 MultiarchLibDirs.append( 1257 X86_64LibDirs, X86_64LibDirs + llvm::array_lengthof(X86_64LibDirs)); 1258 MultiarchTripleAliases.append( 1259 X86_64Triples, X86_64Triples + llvm::array_lengthof(X86_64Triples)); 1260 break; 1261 case llvm::Triple::mips: 1262 LibDirs.append( 1263 MIPSLibDirs, MIPSLibDirs + llvm::array_lengthof(MIPSLibDirs)); 1264 TripleAliases.append( 1265 MIPSTriples, MIPSTriples + llvm::array_lengthof(MIPSTriples)); 1266 break; 1267 case llvm::Triple::mipsel: 1268 LibDirs.append( 1269 MIPSELLibDirs, MIPSELLibDirs + llvm::array_lengthof(MIPSELLibDirs)); 1270 TripleAliases.append( 1271 MIPSELTriples, MIPSELTriples + llvm::array_lengthof(MIPSELTriples)); 1272 break; 1273 case llvm::Triple::ppc: 1274 LibDirs.append(PPCLibDirs, PPCLibDirs + llvm::array_lengthof(PPCLibDirs)); 1275 TripleAliases.append( 1276 PPCTriples, PPCTriples + llvm::array_lengthof(PPCTriples)); 1277 MultiarchLibDirs.append( 1278 PPC64LibDirs, PPC64LibDirs + llvm::array_lengthof(PPC64LibDirs)); 1279 MultiarchTripleAliases.append( 1280 PPC64Triples, PPC64Triples + llvm::array_lengthof(PPC64Triples)); 1281 break; 1282 case llvm::Triple::ppc64: 1283 LibDirs.append( 1284 PPC64LibDirs, PPC64LibDirs + llvm::array_lengthof(PPC64LibDirs)); 1285 TripleAliases.append( 1286 PPC64Triples, PPC64Triples + llvm::array_lengthof(PPC64Triples)); 1287 MultiarchLibDirs.append( 1288 PPCLibDirs, PPCLibDirs + llvm::array_lengthof(PPCLibDirs)); 1289 MultiarchTripleAliases.append( 1290 PPCTriples, PPCTriples + llvm::array_lengthof(PPCTriples)); 1291 break; 1292 1293 default: 1294 // By default, just rely on the standard lib directories and the original 1295 // triple. 1296 break; 1297 } 1298 1299 // Always append the drivers target triple to the end, in case it doesn't 1300 // match any of our aliases. 1301 TripleAliases.push_back(TargetTriple.str()); 1302 1303 // Also include the multiarch variant if it's different. 1304 if (TargetTriple.str() != MultiarchTriple.str()) 1305 MultiarchTripleAliases.push_back(MultiarchTriple.str()); 1306} 1307 1308void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple( 1309 llvm::Triple::ArchType TargetArch, const std::string &LibDir, 1310 StringRef CandidateTriple, bool NeedsMultiarchSuffix) { 1311 // There are various different suffixes involving the triple we 1312 // check for. We also record what is necessary to walk from each back 1313 // up to the lib directory. 1314 const std::string LibSuffixes[] = { 1315 "/gcc/" + CandidateTriple.str(), 1316 "/" + CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), 1317 1318 // Ubuntu has a strange mis-matched pair of triples that this happens to 1319 // match. 1320 // FIXME: It may be worthwhile to generalize this and look for a second 1321 // triple. 1322 "/i386-linux-gnu/gcc/" + CandidateTriple.str() 1323 }; 1324 const std::string InstallSuffixes[] = { 1325 "/../../..", 1326 "/../../../..", 1327 "/../../../.." 1328 }; 1329 // Only look at the final, weird Ubuntu suffix for i386-linux-gnu. 1330 const unsigned NumLibSuffixes = (llvm::array_lengthof(LibSuffixes) - 1331 (TargetArch != llvm::Triple::x86)); 1332 for (unsigned i = 0; i < NumLibSuffixes; ++i) { 1333 StringRef LibSuffix = LibSuffixes[i]; 1334 llvm::error_code EC; 1335 for (llvm::sys::fs::directory_iterator LI(LibDir + LibSuffix, EC), LE; 1336 !EC && LI != LE; LI = LI.increment(EC)) { 1337 StringRef VersionText = llvm::sys::path::filename(LI->path()); 1338 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 1339 static const GCCVersion MinVersion = { "4.1.1", 4, 1, 1, "" }; 1340 if (CandidateVersion < MinVersion) 1341 continue; 1342 if (CandidateVersion <= Version) 1343 continue; 1344 1345 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs 1346 // in what would normally be GCCInstallPath and put the 64-bit 1347 // libs in a subdirectory named 64. The simple logic we follow is that 1348 // *if* there is a subdirectory of the right name with crtbegin.o in it, 1349 // we use that. If not, and if not a multiarch triple, we look for 1350 // crtbegin.o without the subdirectory. 1351 StringRef MultiarchSuffix 1352 = (TargetArch == llvm::Triple::x86_64 || 1353 TargetArch == llvm::Triple::ppc64) ? "/64" : "/32"; 1354 if (llvm::sys::fs::exists(LI->path() + MultiarchSuffix + "/crtbegin.o")) { 1355 GCCMultiarchSuffix = MultiarchSuffix.str(); 1356 } else { 1357 if (NeedsMultiarchSuffix || 1358 !llvm::sys::fs::exists(LI->path() + "/crtbegin.o")) 1359 continue; 1360 GCCMultiarchSuffix.clear(); 1361 } 1362 1363 Version = CandidateVersion; 1364 GCCTriple.setTriple(CandidateTriple); 1365 // FIXME: We hack together the directory name here instead of 1366 // using LI to ensure stable path separators across Windows and 1367 // Linux. 1368 GCCInstallPath = LibDir + LibSuffixes[i] + "/" + VersionText.str(); 1369 GCCParentLibPath = GCCInstallPath + InstallSuffixes[i]; 1370 IsValid = true; 1371 } 1372 } 1373} 1374 1375Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple& Triple, 1376 const ArgList &Args) 1377 : ToolChain(D, Triple), GCCInstallation(getDriver(), Triple, Args) { 1378 getProgramPaths().push_back(getDriver().getInstalledDir()); 1379 if (getDriver().getInstalledDir() != getDriver().Dir) 1380 getProgramPaths().push_back(getDriver().Dir); 1381} 1382 1383Generic_GCC::~Generic_GCC() { 1384 // Free tool implementations. 1385 for (llvm::DenseMap<unsigned, Tool*>::iterator 1386 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 1387 delete it->second; 1388} 1389 1390Tool &Generic_GCC::SelectTool(const Compilation &C, 1391 const JobAction &JA, 1392 const ActionList &Inputs) const { 1393 Action::ActionClass Key; 1394 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1395 Key = Action::AnalyzeJobClass; 1396 else 1397 Key = JA.getKind(); 1398 1399 Tool *&T = Tools[Key]; 1400 if (!T) { 1401 switch (Key) { 1402 case Action::InputClass: 1403 case Action::BindArchClass: 1404 llvm_unreachable("Invalid tool kind."); 1405 case Action::PreprocessJobClass: 1406 T = new tools::gcc::Preprocess(*this); break; 1407 case Action::PrecompileJobClass: 1408 T = new tools::gcc::Precompile(*this); break; 1409 case Action::AnalyzeJobClass: 1410 case Action::MigrateJobClass: 1411 T = new tools::Clang(*this); break; 1412 case Action::CompileJobClass: 1413 T = new tools::gcc::Compile(*this); break; 1414 case Action::AssembleJobClass: 1415 T = new tools::gcc::Assemble(*this); break; 1416 case Action::LinkJobClass: 1417 T = new tools::gcc::Link(*this); break; 1418 1419 // This is a bit ungeneric, but the only platform using a driver 1420 // driver is Darwin. 1421 case Action::LipoJobClass: 1422 T = new tools::darwin::Lipo(*this); break; 1423 case Action::DsymutilJobClass: 1424 T = new tools::darwin::Dsymutil(*this); break; 1425 case Action::VerifyJobClass: 1426 T = new tools::darwin::VerifyDebug(*this); break; 1427 } 1428 } 1429 1430 return *T; 1431} 1432 1433bool Generic_GCC::IsUnwindTablesDefault() const { 1434 // FIXME: Gross; we should probably have some separate target 1435 // definition, possibly even reusing the one in clang. 1436 return getArchName() == "x86_64"; 1437} 1438 1439const char *Generic_GCC::GetDefaultRelocationModel() const { 1440 return "static"; 1441} 1442 1443const char *Generic_GCC::GetForcedPicModel() const { 1444 return 0; 1445} 1446/// Hexagon Toolchain 1447 1448Hexagon_TC::Hexagon_TC(const Driver &D, const llvm::Triple& Triple) 1449 : ToolChain(D, Triple) { 1450 getProgramPaths().push_back(getDriver().getInstalledDir()); 1451 if (getDriver().getInstalledDir() != getDriver().Dir.c_str()) 1452 getProgramPaths().push_back(getDriver().Dir); 1453} 1454 1455Hexagon_TC::~Hexagon_TC() { 1456 // Free tool implementations. 1457 for (llvm::DenseMap<unsigned, Tool*>::iterator 1458 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 1459 delete it->second; 1460} 1461 1462Tool &Hexagon_TC::SelectTool(const Compilation &C, 1463 const JobAction &JA, 1464 const ActionList &Inputs) const { 1465 Action::ActionClass Key; 1466 // if (JA.getKind () == Action::CompileJobClass) 1467 // Key = JA.getKind (); 1468 // else 1469 1470 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1471 Key = Action::AnalyzeJobClass; 1472 else 1473 Key = JA.getKind(); 1474 // if ((JA.getKind () == Action::CompileJobClass) 1475 // && (JA.getType () != types::TY_LTO_BC)) { 1476 // Key = JA.getKind (); 1477 // } 1478 1479 Tool *&T = Tools[Key]; 1480 if (!T) { 1481 switch (Key) { 1482 case Action::InputClass: 1483 case Action::BindArchClass: 1484 assert(0 && "Invalid tool kind."); 1485 case Action::AnalyzeJobClass: 1486 T = new tools::Clang(*this); break; 1487 case Action::AssembleJobClass: 1488 T = new tools::hexagon::Assemble(*this); break; 1489 case Action::LinkJobClass: 1490 T = new tools::hexagon::Link(*this); break; 1491 default: 1492 assert(false && "Unsupported action for Hexagon target."); 1493 } 1494 } 1495 1496 return *T; 1497} 1498 1499bool Hexagon_TC::IsUnwindTablesDefault() const { 1500 // FIXME: Gross; we should probably have some separate target 1501 // definition, possibly even reusing the one in clang. 1502 return getArchName() == "x86_64"; 1503} 1504 1505const char *Hexagon_TC::GetDefaultRelocationModel() const { 1506 return "static"; 1507} 1508 1509const char *Hexagon_TC::GetForcedPicModel() const { 1510 return 0; 1511} // End Hexagon 1512 1513 1514/// TCEToolChain - A tool chain using the llvm bitcode tools to perform 1515/// all subcommands. See http://tce.cs.tut.fi for our peculiar target. 1516/// Currently does not support anything else but compilation. 1517 1518TCEToolChain::TCEToolChain(const Driver &D, const llvm::Triple& Triple) 1519 : ToolChain(D, Triple) { 1520 // Path mangling to find libexec 1521 std::string Path(getDriver().Dir); 1522 1523 Path += "/../libexec"; 1524 getProgramPaths().push_back(Path); 1525} 1526 1527TCEToolChain::~TCEToolChain() { 1528 for (llvm::DenseMap<unsigned, Tool*>::iterator 1529 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 1530 delete it->second; 1531} 1532 1533bool TCEToolChain::IsMathErrnoDefault() const { 1534 return true; 1535} 1536 1537bool TCEToolChain::IsUnwindTablesDefault() const { 1538 return false; 1539} 1540 1541const char *TCEToolChain::GetDefaultRelocationModel() const { 1542 return "static"; 1543} 1544 1545const char *TCEToolChain::GetForcedPicModel() const { 1546 return 0; 1547} 1548 1549Tool &TCEToolChain::SelectTool(const Compilation &C, 1550 const JobAction &JA, 1551 const ActionList &Inputs) const { 1552 Action::ActionClass Key; 1553 Key = Action::AnalyzeJobClass; 1554 1555 Tool *&T = Tools[Key]; 1556 if (!T) { 1557 switch (Key) { 1558 case Action::PreprocessJobClass: 1559 T = new tools::gcc::Preprocess(*this); break; 1560 case Action::AnalyzeJobClass: 1561 T = new tools::Clang(*this); break; 1562 default: 1563 llvm_unreachable("Unsupported action for TCE target."); 1564 } 1565 } 1566 return *T; 1567} 1568 1569/// OpenBSD - OpenBSD tool chain which can call as(1) and ld(1) directly. 1570 1571OpenBSD::OpenBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1572 : Generic_ELF(D, Triple, Args) { 1573 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1574 getFilePaths().push_back("/usr/lib"); 1575} 1576 1577Tool &OpenBSD::SelectTool(const Compilation &C, const JobAction &JA, 1578 const ActionList &Inputs) const { 1579 Action::ActionClass Key; 1580 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1581 Key = Action::AnalyzeJobClass; 1582 else 1583 Key = JA.getKind(); 1584 1585 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 1586 options::OPT_no_integrated_as, 1587 IsIntegratedAssemblerDefault()); 1588 1589 Tool *&T = Tools[Key]; 1590 if (!T) { 1591 switch (Key) { 1592 case Action::AssembleJobClass: { 1593 if (UseIntegratedAs) 1594 T = new tools::ClangAs(*this); 1595 else 1596 T = new tools::openbsd::Assemble(*this); 1597 break; 1598 } 1599 case Action::LinkJobClass: 1600 T = new tools::openbsd::Link(*this); break; 1601 default: 1602 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1603 } 1604 } 1605 1606 return *T; 1607} 1608 1609/// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly. 1610 1611FreeBSD::FreeBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1612 : Generic_ELF(D, Triple, Args) { 1613 1614 // When targeting 32-bit platforms, look for '/usr/lib32/crt1.o' and fall 1615 // back to '/usr/lib' if it doesn't exist. 1616 if ((Triple.getArch() == llvm::Triple::x86 || 1617 Triple.getArch() == llvm::Triple::ppc) && 1618 llvm::sys::fs::exists(getDriver().SysRoot + "/usr/lib32/crt1.o")) 1619 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib32"); 1620 else 1621 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib"); 1622} 1623 1624Tool &FreeBSD::SelectTool(const Compilation &C, const JobAction &JA, 1625 const ActionList &Inputs) const { 1626 Action::ActionClass Key; 1627 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1628 Key = Action::AnalyzeJobClass; 1629 else 1630 Key = JA.getKind(); 1631 1632 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 1633 options::OPT_no_integrated_as, 1634 IsIntegratedAssemblerDefault()); 1635 1636 Tool *&T = Tools[Key]; 1637 if (!T) { 1638 switch (Key) { 1639 case Action::AssembleJobClass: 1640 if (UseIntegratedAs) 1641 T = new tools::ClangAs(*this); 1642 else 1643 T = new tools::freebsd::Assemble(*this); 1644 break; 1645 case Action::LinkJobClass: 1646 T = new tools::freebsd::Link(*this); break; 1647 default: 1648 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1649 } 1650 } 1651 1652 return *T; 1653} 1654 1655/// NetBSD - NetBSD tool chain which can call as(1) and ld(1) directly. 1656 1657NetBSD::NetBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1658 : Generic_ELF(D, Triple, Args) { 1659 1660 if (getDriver().UseStdLib) { 1661 // When targeting a 32-bit platform, try the special directory used on 1662 // 64-bit hosts, and only fall back to the main library directory if that 1663 // doesn't work. 1664 // FIXME: It'd be nicer to test if this directory exists, but I'm not sure 1665 // what all logic is needed to emulate the '=' prefix here. 1666 if (Triple.getArch() == llvm::Triple::x86) 1667 getFilePaths().push_back("=/usr/lib/i386"); 1668 1669 getFilePaths().push_back("=/usr/lib"); 1670 } 1671} 1672 1673Tool &NetBSD::SelectTool(const Compilation &C, const JobAction &JA, 1674 const ActionList &Inputs) const { 1675 Action::ActionClass Key; 1676 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1677 Key = Action::AnalyzeJobClass; 1678 else 1679 Key = JA.getKind(); 1680 1681 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 1682 options::OPT_no_integrated_as, 1683 IsIntegratedAssemblerDefault()); 1684 1685 Tool *&T = Tools[Key]; 1686 if (!T) { 1687 switch (Key) { 1688 case Action::AssembleJobClass: 1689 if (UseIntegratedAs) 1690 T = new tools::ClangAs(*this); 1691 else 1692 T = new tools::netbsd::Assemble(*this); 1693 break; 1694 case Action::LinkJobClass: 1695 T = new tools::netbsd::Link(*this); 1696 break; 1697 default: 1698 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1699 } 1700 } 1701 1702 return *T; 1703} 1704 1705/// Minix - Minix tool chain which can call as(1) and ld(1) directly. 1706 1707Minix::Minix(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1708 : Generic_ELF(D, Triple, Args) { 1709 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1710 getFilePaths().push_back("/usr/lib"); 1711} 1712 1713Tool &Minix::SelectTool(const Compilation &C, const JobAction &JA, 1714 const ActionList &Inputs) const { 1715 Action::ActionClass Key; 1716 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1717 Key = Action::AnalyzeJobClass; 1718 else 1719 Key = JA.getKind(); 1720 1721 Tool *&T = Tools[Key]; 1722 if (!T) { 1723 switch (Key) { 1724 case Action::AssembleJobClass: 1725 T = new tools::minix::Assemble(*this); break; 1726 case Action::LinkJobClass: 1727 T = new tools::minix::Link(*this); break; 1728 default: 1729 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1730 } 1731 } 1732 1733 return *T; 1734} 1735 1736/// AuroraUX - AuroraUX tool chain which can call as(1) and ld(1) directly. 1737 1738AuroraUX::AuroraUX(const Driver &D, const llvm::Triple& Triple, 1739 const ArgList &Args) 1740 : Generic_GCC(D, Triple, Args) { 1741 1742 getProgramPaths().push_back(getDriver().getInstalledDir()); 1743 if (getDriver().getInstalledDir() != getDriver().Dir) 1744 getProgramPaths().push_back(getDriver().Dir); 1745 1746 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1747 getFilePaths().push_back("/usr/lib"); 1748 getFilePaths().push_back("/usr/sfw/lib"); 1749 getFilePaths().push_back("/opt/gcc4/lib"); 1750 getFilePaths().push_back("/opt/gcc4/lib/gcc/i386-pc-solaris2.11/4.2.4"); 1751 1752} 1753 1754Tool &AuroraUX::SelectTool(const Compilation &C, const JobAction &JA, 1755 const ActionList &Inputs) const { 1756 Action::ActionClass Key; 1757 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1758 Key = Action::AnalyzeJobClass; 1759 else 1760 Key = JA.getKind(); 1761 1762 Tool *&T = Tools[Key]; 1763 if (!T) { 1764 switch (Key) { 1765 case Action::AssembleJobClass: 1766 T = new tools::auroraux::Assemble(*this); break; 1767 case Action::LinkJobClass: 1768 T = new tools::auroraux::Link(*this); break; 1769 default: 1770 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1771 } 1772 } 1773 1774 return *T; 1775} 1776 1777/// Solaris - Solaris tool chain which can call as(1) and ld(1) directly. 1778 1779Solaris::Solaris(const Driver &D, const llvm::Triple& Triple, 1780 const ArgList &Args) 1781 : Generic_GCC(D, Triple, Args) { 1782 1783 getProgramPaths().push_back(getDriver().getInstalledDir()); 1784 if (getDriver().getInstalledDir() != getDriver().Dir) 1785 getProgramPaths().push_back(getDriver().Dir); 1786 1787 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1788 getFilePaths().push_back("/usr/lib"); 1789} 1790 1791Tool &Solaris::SelectTool(const Compilation &C, const JobAction &JA, 1792 const ActionList &Inputs) const { 1793 Action::ActionClass Key; 1794 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1795 Key = Action::AnalyzeJobClass; 1796 else 1797 Key = JA.getKind(); 1798 1799 Tool *&T = Tools[Key]; 1800 if (!T) { 1801 switch (Key) { 1802 case Action::AssembleJobClass: 1803 T = new tools::solaris::Assemble(*this); break; 1804 case Action::LinkJobClass: 1805 T = new tools::solaris::Link(*this); break; 1806 default: 1807 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1808 } 1809 } 1810 1811 return *T; 1812} 1813 1814/// Linux toolchain (very bare-bones at the moment). 1815 1816enum LinuxDistro { 1817 ArchLinux, 1818 DebianLenny, 1819 DebianSqueeze, 1820 DebianWheezy, 1821 Exherbo, 1822 RHEL4, 1823 RHEL5, 1824 RHEL6, 1825 Fedora13, 1826 Fedora14, 1827 Fedora15, 1828 Fedora16, 1829 FedoraRawhide, 1830 OpenSuse11_3, 1831 OpenSuse11_4, 1832 OpenSuse12_1, 1833 OpenSuse12_2, 1834 UbuntuHardy, 1835 UbuntuIntrepid, 1836 UbuntuJaunty, 1837 UbuntuKarmic, 1838 UbuntuLucid, 1839 UbuntuMaverick, 1840 UbuntuNatty, 1841 UbuntuOneiric, 1842 UbuntuPrecise, 1843 UnknownDistro 1844}; 1845 1846static bool IsRedhat(enum LinuxDistro Distro) { 1847 return (Distro >= Fedora13 && Distro <= FedoraRawhide) || 1848 (Distro >= RHEL4 && Distro <= RHEL6); 1849} 1850 1851static bool IsOpenSuse(enum LinuxDistro Distro) { 1852 return Distro >= OpenSuse11_3 && Distro <= OpenSuse12_2; 1853} 1854 1855static bool IsDebian(enum LinuxDistro Distro) { 1856 return Distro >= DebianLenny && Distro <= DebianWheezy; 1857} 1858 1859static bool IsUbuntu(enum LinuxDistro Distro) { 1860 return Distro >= UbuntuHardy && Distro <= UbuntuPrecise; 1861} 1862 1863static LinuxDistro DetectLinuxDistro(llvm::Triple::ArchType Arch) { 1864 OwningPtr<llvm::MemoryBuffer> File; 1865 if (!llvm::MemoryBuffer::getFile("/etc/lsb-release", File)) { 1866 StringRef Data = File.get()->getBuffer(); 1867 SmallVector<StringRef, 8> Lines; 1868 Data.split(Lines, "\n"); 1869 LinuxDistro Version = UnknownDistro; 1870 for (unsigned i = 0, s = Lines.size(); i != s; ++i) 1871 if (Version == UnknownDistro && Lines[i].startswith("DISTRIB_CODENAME=")) 1872 Version = llvm::StringSwitch<LinuxDistro>(Lines[i].substr(17)) 1873 .Case("hardy", UbuntuHardy) 1874 .Case("intrepid", UbuntuIntrepid) 1875 .Case("jaunty", UbuntuJaunty) 1876 .Case("karmic", UbuntuKarmic) 1877 .Case("lucid", UbuntuLucid) 1878 .Case("maverick", UbuntuMaverick) 1879 .Case("natty", UbuntuNatty) 1880 .Case("oneiric", UbuntuOneiric) 1881 .Case("precise", UbuntuPrecise) 1882 .Default(UnknownDistro); 1883 return Version; 1884 } 1885 1886 if (!llvm::MemoryBuffer::getFile("/etc/redhat-release", File)) { 1887 StringRef Data = File.get()->getBuffer(); 1888 if (Data.startswith("Fedora release 16")) 1889 return Fedora16; 1890 else if (Data.startswith("Fedora release 15")) 1891 return Fedora15; 1892 else if (Data.startswith("Fedora release 14")) 1893 return Fedora14; 1894 else if (Data.startswith("Fedora release 13")) 1895 return Fedora13; 1896 else if (Data.startswith("Fedora release") && 1897 Data.find("Rawhide") != StringRef::npos) 1898 return FedoraRawhide; 1899 else if (Data.startswith("Red Hat Enterprise Linux") && 1900 Data.find("release 6") != StringRef::npos) 1901 return RHEL6; 1902 else if ((Data.startswith("Red Hat Enterprise Linux") || 1903 Data.startswith("CentOS")) && 1904 Data.find("release 5") != StringRef::npos) 1905 return RHEL5; 1906 else if ((Data.startswith("Red Hat Enterprise Linux") || 1907 Data.startswith("CentOS")) && 1908 Data.find("release 4") != StringRef::npos) 1909 return RHEL4; 1910 return UnknownDistro; 1911 } 1912 1913 if (!llvm::MemoryBuffer::getFile("/etc/debian_version", File)) { 1914 StringRef Data = File.get()->getBuffer(); 1915 if (Data[0] == '5') 1916 return DebianLenny; 1917 else if (Data.startswith("squeeze/sid") || Data[0] == '6') 1918 return DebianSqueeze; 1919 else if (Data.startswith("wheezy/sid") || Data[0] == '7') 1920 return DebianWheezy; 1921 return UnknownDistro; 1922 } 1923 1924 if (!llvm::MemoryBuffer::getFile("/etc/SuSE-release", File)) 1925 return llvm::StringSwitch<LinuxDistro>(File.get()->getBuffer()) 1926 .StartsWith("openSUSE 11.3", OpenSuse11_3) 1927 .StartsWith("openSUSE 11.4", OpenSuse11_4) 1928 .StartsWith("openSUSE 12.1", OpenSuse12_1) 1929 .StartsWith("openSUSE 12.2", OpenSuse12_2) 1930 .Default(UnknownDistro); 1931 1932 bool Exists; 1933 if (!llvm::sys::fs::exists("/etc/exherbo-release", Exists) && Exists) 1934 return Exherbo; 1935 1936 if (!llvm::sys::fs::exists("/etc/arch-release", Exists) && Exists) 1937 return ArchLinux; 1938 1939 return UnknownDistro; 1940} 1941 1942/// \brief Get our best guess at the multiarch triple for a target. 1943/// 1944/// Debian-based systems are starting to use a multiarch setup where they use 1945/// a target-triple directory in the library and header search paths. 1946/// Unfortunately, this triple does not align with the vanilla target triple, 1947/// so we provide a rough mapping here. 1948static std::string getMultiarchTriple(const llvm::Triple TargetTriple, 1949 StringRef SysRoot) { 1950 // For most architectures, just use whatever we have rather than trying to be 1951 // clever. 1952 switch (TargetTriple.getArch()) { 1953 default: 1954 return TargetTriple.str(); 1955 1956 // We use the existence of '/lib/<triple>' as a directory to detect some 1957 // common linux triples that don't quite match the Clang triple for both 1958 // 32-bit and 64-bit targets. Multiarch fixes its install triples to these 1959 // regardless of what the actual target triple is. 1960 case llvm::Triple::x86: 1961 if (llvm::sys::fs::exists(SysRoot + "/lib/i386-linux-gnu")) 1962 return "i386-linux-gnu"; 1963 return TargetTriple.str(); 1964 case llvm::Triple::x86_64: 1965 if (llvm::sys::fs::exists(SysRoot + "/lib/x86_64-linux-gnu")) 1966 return "x86_64-linux-gnu"; 1967 return TargetTriple.str(); 1968 case llvm::Triple::mips: 1969 if (llvm::sys::fs::exists(SysRoot + "/lib/mips-linux-gnu")) 1970 return "mips-linux-gnu"; 1971 return TargetTriple.str(); 1972 case llvm::Triple::mipsel: 1973 if (llvm::sys::fs::exists(SysRoot + "/lib/mipsel-linux-gnu")) 1974 return "mipsel-linux-gnu"; 1975 return TargetTriple.str(); 1976 case llvm::Triple::ppc: 1977 if (llvm::sys::fs::exists(SysRoot + "/lib/powerpc-linux-gnu")) 1978 return "powerpc-linux-gnu"; 1979 return TargetTriple.str(); 1980 case llvm::Triple::ppc64: 1981 if (llvm::sys::fs::exists(SysRoot + "/lib/powerpc64-linux-gnu")) 1982 return "powerpc64-linux-gnu"; 1983 return TargetTriple.str(); 1984 } 1985} 1986 1987static void addPathIfExists(Twine Path, ToolChain::path_list &Paths) { 1988 if (llvm::sys::fs::exists(Path)) Paths.push_back(Path.str()); 1989} 1990 1991Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) 1992 : Generic_ELF(D, Triple, Args) { 1993 llvm::Triple::ArchType Arch = Triple.getArch(); 1994 const std::string &SysRoot = getDriver().SysRoot; 1995 1996 // OpenSuse stores the linker with the compiler, add that to the search 1997 // path. 1998 ToolChain::path_list &PPaths = getProgramPaths(); 1999 PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" + 2000 GCCInstallation.getTriple().str() + "/bin").str()); 2001 2002 Linker = GetProgramPath("ld"); 2003 2004 LinuxDistro Distro = DetectLinuxDistro(Arch); 2005 2006 if (IsOpenSuse(Distro) || IsUbuntu(Distro)) { 2007 ExtraOpts.push_back("-z"); 2008 ExtraOpts.push_back("relro"); 2009 } 2010 2011 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb) 2012 ExtraOpts.push_back("-X"); 2013 2014 const bool IsMips = Arch == llvm::Triple::mips || 2015 Arch == llvm::Triple::mipsel || 2016 Arch == llvm::Triple::mips64 || 2017 Arch == llvm::Triple::mips64el; 2018 2019 const bool IsAndroid = Triple.getEnvironment() == llvm::Triple::ANDROIDEABI; 2020 2021 // Do not use 'gnu' hash style for Mips targets because .gnu.hash 2022 // and the MIPS ABI require .dynsym to be sorted in different ways. 2023 // .gnu.hash needs symbols to be grouped by hash code whereas the MIPS 2024 // ABI requires a mapping between the GOT and the symbol table. 2025 // Android loader does not support .gnu.hash. 2026 if (!IsMips && !IsAndroid) { 2027 if (IsRedhat(Distro) || IsOpenSuse(Distro) || 2028 (IsUbuntu(Distro) && Distro >= UbuntuMaverick)) 2029 ExtraOpts.push_back("--hash-style=gnu"); 2030 2031 if (IsDebian(Distro) || IsOpenSuse(Distro) || Distro == UbuntuLucid || 2032 Distro == UbuntuJaunty || Distro == UbuntuKarmic) 2033 ExtraOpts.push_back("--hash-style=both"); 2034 } 2035 2036 if (IsRedhat(Distro)) 2037 ExtraOpts.push_back("--no-add-needed"); 2038 2039 if (Distro == DebianSqueeze || Distro == DebianWheezy || 2040 IsOpenSuse(Distro) || 2041 (IsRedhat(Distro) && Distro != RHEL4 && Distro != RHEL5) || 2042 (IsUbuntu(Distro) && Distro >= UbuntuKarmic)) 2043 ExtraOpts.push_back("--build-id"); 2044 2045 if (IsOpenSuse(Distro)) 2046 ExtraOpts.push_back("--enable-new-dtags"); 2047 2048 // The selection of paths to try here is designed to match the patterns which 2049 // the GCC driver itself uses, as this is part of the GCC-compatible driver. 2050 // This was determined by running GCC in a fake filesystem, creating all 2051 // possible permutations of these directories, and seeing which ones it added 2052 // to the link paths. 2053 path_list &Paths = getFilePaths(); 2054 2055 const std::string Multilib = Triple.isArch32Bit() ? "lib32" : "lib64"; 2056 const std::string MultiarchTriple = getMultiarchTriple(Triple, SysRoot); 2057 2058 // Add the multilib suffixed paths where they are available. 2059 if (GCCInstallation.isValid()) { 2060 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2061 const std::string &LibPath = GCCInstallation.getParentLibPath(); 2062 addPathIfExists((GCCInstallation.getInstallPath() + 2063 GCCInstallation.getMultiarchSuffix()), 2064 Paths); 2065 2066 // If the GCC installation we found is inside of the sysroot, we want to 2067 // prefer libraries installed in the parent prefix of the GCC installation. 2068 // It is important to *not* use these paths when the GCC installation is 2069 // outside of the system root as that can pick up unintended libraries. 2070 // This usually happens when there is an external cross compiler on the 2071 // host system, and a more minimal sysroot available that is the target of 2072 // the cross. 2073 if (StringRef(LibPath).startswith(SysRoot)) { 2074 addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib/../" + Multilib, 2075 Paths); 2076 addPathIfExists(LibPath + "/" + MultiarchTriple, Paths); 2077 addPathIfExists(LibPath + "/../" + Multilib, Paths); 2078 } 2079 } 2080 addPathIfExists(SysRoot + "/lib/" + MultiarchTriple, Paths); 2081 addPathIfExists(SysRoot + "/lib/../" + Multilib, Paths); 2082 addPathIfExists(SysRoot + "/usr/lib/" + MultiarchTriple, Paths); 2083 addPathIfExists(SysRoot + "/usr/lib/../" + Multilib, Paths); 2084 2085 // Try walking via the GCC triple path in case of multiarch GCC 2086 // installations with strange symlinks. 2087 if (GCCInstallation.isValid()) 2088 addPathIfExists(SysRoot + "/usr/lib/" + GCCInstallation.getTriple().str() + 2089 "/../../" + Multilib, Paths); 2090 2091 // Add the non-multilib suffixed paths (if potentially different). 2092 if (GCCInstallation.isValid()) { 2093 const std::string &LibPath = GCCInstallation.getParentLibPath(); 2094 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2095 if (!GCCInstallation.getMultiarchSuffix().empty()) 2096 addPathIfExists(GCCInstallation.getInstallPath(), Paths); 2097 2098 if (StringRef(LibPath).startswith(SysRoot)) { 2099 addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib", Paths); 2100 addPathIfExists(LibPath, Paths); 2101 } 2102 } 2103 addPathIfExists(SysRoot + "/lib", Paths); 2104 addPathIfExists(SysRoot + "/usr/lib", Paths); 2105} 2106 2107bool Linux::HasNativeLLVMSupport() const { 2108 return true; 2109} 2110 2111Tool &Linux::SelectTool(const Compilation &C, const JobAction &JA, 2112 const ActionList &Inputs) const { 2113 Action::ActionClass Key; 2114 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 2115 Key = Action::AnalyzeJobClass; 2116 else 2117 Key = JA.getKind(); 2118 2119 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 2120 options::OPT_no_integrated_as, 2121 IsIntegratedAssemblerDefault()); 2122 2123 Tool *&T = Tools[Key]; 2124 if (!T) { 2125 switch (Key) { 2126 case Action::AssembleJobClass: 2127 if (UseIntegratedAs) 2128 T = new tools::ClangAs(*this); 2129 else 2130 T = new tools::linuxtools::Assemble(*this); 2131 break; 2132 case Action::LinkJobClass: 2133 T = new tools::linuxtools::Link(*this); break; 2134 default: 2135 T = &Generic_GCC::SelectTool(C, JA, Inputs); 2136 } 2137 } 2138 2139 return *T; 2140} 2141 2142void Linux::AddClangSystemIncludeArgs(const ArgList &DriverArgs, 2143 ArgStringList &CC1Args) const { 2144 const Driver &D = getDriver(); 2145 2146 if (DriverArgs.hasArg(options::OPT_nostdinc)) 2147 return; 2148 2149 if (!DriverArgs.hasArg(options::OPT_nostdlibinc)) 2150 addSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/usr/local/include"); 2151 2152 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) { 2153 llvm::sys::Path P(D.ResourceDir); 2154 P.appendComponent("include"); 2155 addSystemInclude(DriverArgs, CC1Args, P.str()); 2156 } 2157 2158 if (DriverArgs.hasArg(options::OPT_nostdlibinc)) 2159 return; 2160 2161 // Check for configure-time C include directories. 2162 StringRef CIncludeDirs(C_INCLUDE_DIRS); 2163 if (CIncludeDirs != "") { 2164 SmallVector<StringRef, 5> dirs; 2165 CIncludeDirs.split(dirs, ":"); 2166 for (SmallVectorImpl<StringRef>::iterator I = dirs.begin(), E = dirs.end(); 2167 I != E; ++I) { 2168 StringRef Prefix = llvm::sys::path::is_absolute(*I) ? D.SysRoot : ""; 2169 addExternCSystemInclude(DriverArgs, CC1Args, Prefix + *I); 2170 } 2171 return; 2172 } 2173 2174 // Lacking those, try to detect the correct set of system includes for the 2175 // target triple. 2176 2177 // Implement generic Debian multiarch support. 2178 const StringRef X86_64MultiarchIncludeDirs[] = { 2179 "/usr/include/x86_64-linux-gnu", 2180 2181 // FIXME: These are older forms of multiarch. It's not clear that they're 2182 // in use in any released version of Debian, so we should consider 2183 // removing them. 2184 "/usr/include/i686-linux-gnu/64", 2185 "/usr/include/i486-linux-gnu/64" 2186 }; 2187 const StringRef X86MultiarchIncludeDirs[] = { 2188 "/usr/include/i386-linux-gnu", 2189 2190 // FIXME: These are older forms of multiarch. It's not clear that they're 2191 // in use in any released version of Debian, so we should consider 2192 // removing them. 2193 "/usr/include/x86_64-linux-gnu/32", 2194 "/usr/include/i686-linux-gnu", 2195 "/usr/include/i486-linux-gnu" 2196 }; 2197 const StringRef ARMMultiarchIncludeDirs[] = { 2198 "/usr/include/arm-linux-gnueabi" 2199 }; 2200 const StringRef MIPSMultiarchIncludeDirs[] = { 2201 "/usr/include/mips-linux-gnu" 2202 }; 2203 const StringRef MIPSELMultiarchIncludeDirs[] = { 2204 "/usr/include/mipsel-linux-gnu" 2205 }; 2206 const StringRef PPCMultiarchIncludeDirs[] = { 2207 "/usr/include/powerpc-linux-gnu" 2208 }; 2209 const StringRef PPC64MultiarchIncludeDirs[] = { 2210 "/usr/include/powerpc64-linux-gnu" 2211 }; 2212 ArrayRef<StringRef> MultiarchIncludeDirs; 2213 if (getTriple().getArch() == llvm::Triple::x86_64) { 2214 MultiarchIncludeDirs = X86_64MultiarchIncludeDirs; 2215 } else if (getTriple().getArch() == llvm::Triple::x86) { 2216 MultiarchIncludeDirs = X86MultiarchIncludeDirs; 2217 } else if (getTriple().getArch() == llvm::Triple::arm) { 2218 MultiarchIncludeDirs = ARMMultiarchIncludeDirs; 2219 } else if (getTriple().getArch() == llvm::Triple::mips) { 2220 MultiarchIncludeDirs = MIPSMultiarchIncludeDirs; 2221 } else if (getTriple().getArch() == llvm::Triple::mipsel) { 2222 MultiarchIncludeDirs = MIPSELMultiarchIncludeDirs; 2223 } else if (getTriple().getArch() == llvm::Triple::ppc) { 2224 MultiarchIncludeDirs = PPCMultiarchIncludeDirs; 2225 } else if (getTriple().getArch() == llvm::Triple::ppc64) { 2226 MultiarchIncludeDirs = PPC64MultiarchIncludeDirs; 2227 } 2228 for (ArrayRef<StringRef>::iterator I = MultiarchIncludeDirs.begin(), 2229 E = MultiarchIncludeDirs.end(); 2230 I != E; ++I) { 2231 if (llvm::sys::fs::exists(D.SysRoot + *I)) { 2232 addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + *I); 2233 break; 2234 } 2235 } 2236 2237 if (getTriple().getOS() == llvm::Triple::RTEMS) 2238 return; 2239 2240 // Add an include of '/include' directly. This isn't provided by default by 2241 // system GCCs, but is often used with cross-compiling GCCs, and harmless to 2242 // add even when Clang is acting as-if it were a system compiler. 2243 addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/include"); 2244 2245 addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/usr/include"); 2246} 2247 2248/// \brief Helper to add the thre variant paths for a libstdc++ installation. 2249/*static*/ bool Linux::addLibStdCXXIncludePaths(Twine Base, Twine TargetArchDir, 2250 const ArgList &DriverArgs, 2251 ArgStringList &CC1Args) { 2252 if (!llvm::sys::fs::exists(Base)) 2253 return false; 2254 addSystemInclude(DriverArgs, CC1Args, Base); 2255 addSystemInclude(DriverArgs, CC1Args, Base + "/" + TargetArchDir); 2256 addSystemInclude(DriverArgs, CC1Args, Base + "/backward"); 2257 return true; 2258} 2259 2260void Linux::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 2261 ArgStringList &CC1Args) const { 2262 if (DriverArgs.hasArg(options::OPT_nostdlibinc) || 2263 DriverArgs.hasArg(options::OPT_nostdincxx)) 2264 return; 2265 2266 // Check if libc++ has been enabled and provide its include paths if so. 2267 if (GetCXXStdlibType(DriverArgs) == ToolChain::CST_Libcxx) { 2268 // libc++ is always installed at a fixed path on Linux currently. 2269 addSystemInclude(DriverArgs, CC1Args, 2270 getDriver().SysRoot + "/usr/include/c++/v1"); 2271 return; 2272 } 2273 2274 // We need a detected GCC installation on Linux to provide libstdc++'s 2275 // headers. We handled the libc++ case above. 2276 if (!GCCInstallation.isValid()) 2277 return; 2278 2279 // By default, look for the C++ headers in an include directory adjacent to 2280 // the lib directory of the GCC installation. Note that this is expect to be 2281 // equivalent to '/usr/include/c++/X.Y' in almost all cases. 2282 StringRef LibDir = GCCInstallation.getParentLibPath(); 2283 StringRef InstallDir = GCCInstallation.getInstallPath(); 2284 StringRef Version = GCCInstallation.getVersion(); 2285 if (!addLibStdCXXIncludePaths(LibDir + "/../include/c++/" + Version, 2286 (GCCInstallation.getTriple().str() + 2287 GCCInstallation.getMultiarchSuffix()), 2288 DriverArgs, CC1Args)) { 2289 // Gentoo is weird and places its headers inside the GCC install, so if the 2290 // first attempt to find the headers fails, try this pattern. 2291 addLibStdCXXIncludePaths(InstallDir + "/include/g++-v4", 2292 (GCCInstallation.getTriple().str() + 2293 GCCInstallation.getMultiarchSuffix()), 2294 DriverArgs, CC1Args); 2295 } 2296} 2297 2298/// DragonFly - DragonFly tool chain which can call as(1) and ld(1) directly. 2299 2300DragonFly::DragonFly(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 2301 : Generic_ELF(D, Triple, Args) { 2302 2303 // Path mangling to find libexec 2304 getProgramPaths().push_back(getDriver().getInstalledDir()); 2305 if (getDriver().getInstalledDir() != getDriver().Dir) 2306 getProgramPaths().push_back(getDriver().Dir); 2307 2308 getFilePaths().push_back(getDriver().Dir + "/../lib"); 2309 getFilePaths().push_back("/usr/lib"); 2310 getFilePaths().push_back("/usr/lib/gcc41"); 2311} 2312 2313Tool &DragonFly::SelectTool(const Compilation &C, const JobAction &JA, 2314 const ActionList &Inputs) const { 2315 Action::ActionClass Key; 2316 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 2317 Key = Action::AnalyzeJobClass; 2318 else 2319 Key = JA.getKind(); 2320 2321 Tool *&T = Tools[Key]; 2322 if (!T) { 2323 switch (Key) { 2324 case Action::AssembleJobClass: 2325 T = new tools::dragonfly::Assemble(*this); break; 2326 case Action::LinkJobClass: 2327 T = new tools::dragonfly::Link(*this); break; 2328 default: 2329 T = &Generic_GCC::SelectTool(C, JA, Inputs); 2330 } 2331 } 2332 2333 return *T; 2334} 2335