ToolChains.cpp revision 234353
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 38#ifndef CLANG_PREFIX 39#define CLANG_PREFIX 40#endif 41 42using namespace clang::driver; 43using namespace clang::driver::toolchains; 44using namespace clang; 45 46/// Darwin - Darwin tool chain for i386 and x86_64. 47 48Darwin::Darwin(const Driver &D, const llvm::Triple& Triple) 49 : ToolChain(D, Triple), TargetInitialized(false), 50 ARCRuntimeForSimulator(ARCSimulator_None), 51 LibCXXForSimulator(LibCXXSimulator_None) 52{ 53 // Compute the initial Darwin version from the triple 54 unsigned Major, Minor, Micro; 55 if (!Triple.getMacOSXVersion(Major, Minor, Micro)) 56 getDriver().Diag(diag::err_drv_invalid_darwin_version) << 57 Triple.getOSName(); 58 llvm::raw_string_ostream(MacosxVersionMin) 59 << Major << '.' << Minor << '.' << Micro; 60 61 // FIXME: DarwinVersion is only used to find GCC's libexec directory. 62 // It should be removed when we stop supporting that. 63 DarwinVersion[0] = Minor + 4; 64 DarwinVersion[1] = Micro; 65 DarwinVersion[2] = 0; 66} 67 68types::ID Darwin::LookupTypeForExtension(const char *Ext) const { 69 types::ID Ty = types::lookupTypeForExtension(Ext); 70 71 // Darwin always preprocesses assembly files (unless -x is used explicitly). 72 if (Ty == types::TY_PP_Asm) 73 return types::TY_Asm; 74 75 return Ty; 76} 77 78bool Darwin::HasNativeLLVMSupport() const { 79 return true; 80} 81 82bool Darwin::hasARCRuntime() const { 83 // FIXME: Remove this once there is a proper way to detect an ARC runtime 84 // for the simulator. 85 switch (ARCRuntimeForSimulator) { 86 case ARCSimulator_None: 87 break; 88 case ARCSimulator_HasARCRuntime: 89 return true; 90 case ARCSimulator_NoARCRuntime: 91 return false; 92 } 93 94 if (isTargetIPhoneOS()) 95 return !isIPhoneOSVersionLT(5); 96 else 97 return !isMacosxVersionLT(10, 7); 98} 99 100bool Darwin::hasSubscriptingRuntime() const { 101 return !isTargetIPhoneOS() && !isMacosxVersionLT(10, 8); 102} 103 104/// Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0. 105void Darwin::configureObjCRuntime(ObjCRuntime &runtime) const { 106 if (runtime.getKind() != ObjCRuntime::NeXT) 107 return ToolChain::configureObjCRuntime(runtime); 108 109 runtime.HasARC = runtime.HasWeak = hasARCRuntime(); 110 runtime.HasSubscripting = hasSubscriptingRuntime(); 111 112 // So far, objc_terminate is only available in iOS 5. 113 // FIXME: do the simulator logic properly. 114 if (!ARCRuntimeForSimulator && isTargetIPhoneOS()) 115 runtime.HasTerminate = !isIPhoneOSVersionLT(5); 116 else 117 runtime.HasTerminate = false; 118} 119 120/// Darwin provides a blocks runtime starting in MacOS X 10.6 and iOS 3.2. 121bool Darwin::hasBlocksRuntime() const { 122 if (isTargetIPhoneOS()) 123 return !isIPhoneOSVersionLT(3, 2); 124 else 125 return !isMacosxVersionLT(10, 6); 126} 127 128static const char *GetArmArchForMArch(StringRef Value) { 129 return llvm::StringSwitch<const char*>(Value) 130 .Case("armv6k", "armv6") 131 .Case("armv5tej", "armv5") 132 .Case("xscale", "xscale") 133 .Case("armv4t", "armv4t") 134 .Case("armv7", "armv7") 135 .Cases("armv7a", "armv7-a", "armv7") 136 .Cases("armv7r", "armv7-r", "armv7") 137 .Cases("armv7m", "armv7-m", "armv7") 138 .Default(0); 139} 140 141static const char *GetArmArchForMCpu(StringRef Value) { 142 return llvm::StringSwitch<const char *>(Value) 143 .Cases("arm9e", "arm946e-s", "arm966e-s", "arm968e-s", "arm926ej-s","armv5") 144 .Cases("arm10e", "arm10tdmi", "armv5") 145 .Cases("arm1020t", "arm1020e", "arm1022e", "arm1026ej-s", "armv5") 146 .Case("xscale", "xscale") 147 .Cases("arm1136j-s", "arm1136jf-s", "arm1176jz-s", 148 "arm1176jzf-s", "cortex-m0", "armv6") 149 .Cases("cortex-a8", "cortex-r4", "cortex-m3", "cortex-a9", "armv7") 150 .Default(0); 151} 152 153StringRef Darwin::getDarwinArchName(const ArgList &Args) const { 154 switch (getTriple().getArch()) { 155 default: 156 return getArchName(); 157 158 case llvm::Triple::thumb: 159 case llvm::Triple::arm: { 160 if (const Arg *A = Args.getLastArg(options::OPT_march_EQ)) 161 if (const char *Arch = GetArmArchForMArch(A->getValue(Args))) 162 return Arch; 163 164 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) 165 if (const char *Arch = GetArmArchForMCpu(A->getValue(Args))) 166 return Arch; 167 168 return "arm"; 169 } 170 } 171} 172 173Darwin::~Darwin() { 174 // Free tool implementations. 175 for (llvm::DenseMap<unsigned, Tool*>::iterator 176 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 177 delete it->second; 178} 179 180std::string Darwin::ComputeEffectiveClangTriple(const ArgList &Args, 181 types::ID InputType) const { 182 llvm::Triple Triple(ComputeLLVMTriple(Args, InputType)); 183 184 // If the target isn't initialized (e.g., an unknown Darwin platform, return 185 // the default triple). 186 if (!isTargetInitialized()) 187 return Triple.getTriple(); 188 189 SmallString<16> Str; 190 Str += isTargetIPhoneOS() ? "ios" : "macosx"; 191 Str += getTargetVersion().getAsString(); 192 Triple.setOSName(Str); 193 194 return Triple.getTriple(); 195} 196 197void Generic_ELF::anchor() {} 198 199Tool &Darwin::SelectTool(const Compilation &C, const JobAction &JA, 200 const ActionList &Inputs) const { 201 Action::ActionClass Key; 202 203 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) { 204 // Fallback to llvm-gcc for i386 kext compiles, we don't support that ABI. 205 if (Inputs.size() == 1 && 206 types::isCXX(Inputs[0]->getType()) && 207 getTriple().isOSDarwin() && 208 getTriple().getArch() == llvm::Triple::x86 && 209 (C.getArgs().getLastArg(options::OPT_fapple_kext) || 210 C.getArgs().getLastArg(options::OPT_mkernel))) 211 Key = JA.getKind(); 212 else 213 Key = Action::AnalyzeJobClass; 214 } else 215 Key = JA.getKind(); 216 217 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 218 options::OPT_no_integrated_as, 219 IsIntegratedAssemblerDefault()); 220 221 Tool *&T = Tools[Key]; 222 if (!T) { 223 switch (Key) { 224 case Action::InputClass: 225 case Action::BindArchClass: 226 llvm_unreachable("Invalid tool kind."); 227 case Action::PreprocessJobClass: 228 T = new tools::darwin::Preprocess(*this); break; 229 case Action::AnalyzeJobClass: 230 case Action::MigrateJobClass: 231 T = new tools::Clang(*this); break; 232 case Action::PrecompileJobClass: 233 case Action::CompileJobClass: 234 T = new tools::darwin::Compile(*this); break; 235 case Action::AssembleJobClass: { 236 if (UseIntegratedAs) 237 T = new tools::ClangAs(*this); 238 else 239 T = new tools::darwin::Assemble(*this); 240 break; 241 } 242 case Action::LinkJobClass: 243 T = new tools::darwin::Link(*this); break; 244 case Action::LipoJobClass: 245 T = new tools::darwin::Lipo(*this); break; 246 case Action::DsymutilJobClass: 247 T = new tools::darwin::Dsymutil(*this); break; 248 case Action::VerifyJobClass: 249 T = new tools::darwin::VerifyDebug(*this); break; 250 } 251 } 252 253 return *T; 254} 255 256 257DarwinClang::DarwinClang(const Driver &D, const llvm::Triple& Triple) 258 : Darwin(D, Triple) 259{ 260 getProgramPaths().push_back(getDriver().getInstalledDir()); 261 if (getDriver().getInstalledDir() != getDriver().Dir) 262 getProgramPaths().push_back(getDriver().Dir); 263 264 // We expect 'as', 'ld', etc. to be adjacent to our install dir. 265 getProgramPaths().push_back(getDriver().getInstalledDir()); 266 if (getDriver().getInstalledDir() != getDriver().Dir) 267 getProgramPaths().push_back(getDriver().Dir); 268 269 // For fallback, we need to know how to find the GCC cc1 executables, so we 270 // also add the GCC libexec paths. This is legacy code that can be removed 271 // once fallback is no longer useful. 272 AddGCCLibexecPath(DarwinVersion[0]); 273 AddGCCLibexecPath(DarwinVersion[0] - 2); 274 AddGCCLibexecPath(DarwinVersion[0] - 1); 275 AddGCCLibexecPath(DarwinVersion[0] + 1); 276 AddGCCLibexecPath(DarwinVersion[0] + 2); 277} 278 279void DarwinClang::AddGCCLibexecPath(unsigned darwinVersion) { 280 std::string ToolChainDir = "i686-apple-darwin"; 281 ToolChainDir += llvm::utostr(darwinVersion); 282 ToolChainDir += "/4.2.1"; 283 284 std::string Path = getDriver().Dir; 285 Path += "/../llvm-gcc-4.2/libexec/gcc/"; 286 Path += ToolChainDir; 287 getProgramPaths().push_back(Path); 288 289 Path = "/usr/llvm-gcc-4.2/libexec/gcc/"; 290 Path += ToolChainDir; 291 getProgramPaths().push_back(Path); 292} 293 294void DarwinClang::AddLinkSearchPathArgs(const ArgList &Args, 295 ArgStringList &CmdArgs) const { 296 // The Clang toolchain uses explicit paths for internal libraries. 297 298 // Unfortunately, we still might depend on a few of the libraries that are 299 // only available in the gcc library directory (in particular 300 // libstdc++.dylib). For now, hardcode the path to the known install location. 301 // FIXME: This should get ripped out someday. However, when building on 302 // 10.6 (darwin10), we're still relying on this to find libstdc++.dylib. 303 llvm::sys::Path P(getDriver().Dir); 304 P.eraseComponent(); // .../usr/bin -> ../usr 305 P.appendComponent("llvm-gcc-4.2"); 306 P.appendComponent("lib"); 307 P.appendComponent("gcc"); 308 switch (getTriple().getArch()) { 309 default: 310 llvm_unreachable("Invalid Darwin arch!"); 311 case llvm::Triple::x86: 312 case llvm::Triple::x86_64: 313 P.appendComponent("i686-apple-darwin10"); 314 break; 315 case llvm::Triple::arm: 316 case llvm::Triple::thumb: 317 P.appendComponent("arm-apple-darwin10"); 318 break; 319 case llvm::Triple::ppc: 320 case llvm::Triple::ppc64: 321 P.appendComponent("powerpc-apple-darwin10"); 322 break; 323 } 324 P.appendComponent("4.2.1"); 325 326 // Determine the arch specific GCC subdirectory. 327 const char *ArchSpecificDir = 0; 328 switch (getTriple().getArch()) { 329 default: 330 break; 331 case llvm::Triple::arm: 332 case llvm::Triple::thumb: { 333 std::string Triple = ComputeLLVMTriple(Args); 334 StringRef TripleStr = Triple; 335 if (TripleStr.startswith("armv5") || TripleStr.startswith("thumbv5")) 336 ArchSpecificDir = "v5"; 337 else if (TripleStr.startswith("armv6") || TripleStr.startswith("thumbv6")) 338 ArchSpecificDir = "v6"; 339 else if (TripleStr.startswith("armv7") || TripleStr.startswith("thumbv7")) 340 ArchSpecificDir = "v7"; 341 break; 342 } 343 case llvm::Triple::ppc64: 344 ArchSpecificDir = "ppc64"; 345 break; 346 case llvm::Triple::x86_64: 347 ArchSpecificDir = "x86_64"; 348 break; 349 } 350 351 if (ArchSpecificDir) { 352 P.appendComponent(ArchSpecificDir); 353 bool Exists; 354 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) 355 CmdArgs.push_back(Args.MakeArgString("-L" + P.str())); 356 P.eraseComponent(); 357 } 358 359 bool Exists; 360 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) 361 CmdArgs.push_back(Args.MakeArgString("-L" + P.str())); 362} 363 364void DarwinClang::AddLinkARCArgs(const ArgList &Args, 365 ArgStringList &CmdArgs) const { 366 367 CmdArgs.push_back("-force_load"); 368 llvm::sys::Path P(getDriver().ClangExecutable); 369 P.eraseComponent(); // 'clang' 370 P.eraseComponent(); // 'bin' 371 P.appendComponent("lib"); 372 P.appendComponent("arc"); 373 P.appendComponent("libarclite_"); 374 std::string s = P.str(); 375 // Mash in the platform. 376 if (isTargetIOSSimulator()) 377 s += "iphonesimulator"; 378 else if (isTargetIPhoneOS()) 379 s += "iphoneos"; 380 // FIXME: Remove this once we depend fully on -mios-simulator-version-min. 381 else if (ARCRuntimeForSimulator != ARCSimulator_None) 382 s += "iphonesimulator"; 383 else 384 s += "macosx"; 385 s += ".a"; 386 387 CmdArgs.push_back(Args.MakeArgString(s)); 388} 389 390void DarwinClang::AddLinkRuntimeLib(const ArgList &Args, 391 ArgStringList &CmdArgs, 392 const char *DarwinStaticLib) const { 393 llvm::sys::Path P(getDriver().ResourceDir); 394 P.appendComponent("lib"); 395 P.appendComponent("darwin"); 396 P.appendComponent(DarwinStaticLib); 397 398 // For now, allow missing resource libraries to support developers who may 399 // not have compiler-rt checked out or integrated into their build. 400 bool Exists; 401 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) 402 CmdArgs.push_back(Args.MakeArgString(P.str())); 403} 404 405void DarwinClang::AddLinkRuntimeLibArgs(const ArgList &Args, 406 ArgStringList &CmdArgs) const { 407 // Darwin only supports the compiler-rt based runtime libraries. 408 switch (GetRuntimeLibType(Args)) { 409 case ToolChain::RLT_CompilerRT: 410 break; 411 default: 412 getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform) 413 << Args.getLastArg(options::OPT_rtlib_EQ)->getValue(Args) << "darwin"; 414 return; 415 } 416 417 // Darwin doesn't support real static executables, don't link any runtime 418 // libraries with -static. 419 if (Args.hasArg(options::OPT_static)) 420 return; 421 422 // Reject -static-libgcc for now, we can deal with this when and if someone 423 // cares. This is useful in situations where someone wants to statically link 424 // something like libstdc++, and needs its runtime support routines. 425 if (const Arg *A = Args.getLastArg(options::OPT_static_libgcc)) { 426 getDriver().Diag(diag::err_drv_unsupported_opt) 427 << A->getAsString(Args); 428 return; 429 } 430 431 // If we are building profile support, link that library in. 432 if (Args.hasArg(options::OPT_fprofile_arcs) || 433 Args.hasArg(options::OPT_fprofile_generate) || 434 Args.hasArg(options::OPT_fcreate_profile) || 435 Args.hasArg(options::OPT_coverage)) { 436 // Select the appropriate runtime library for the target. 437 if (isTargetIPhoneOS()) { 438 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.profile_ios.a"); 439 } else { 440 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.profile_osx.a"); 441 } 442 } 443 444 // Add ASAN runtime library, if required. Dynamic libraries and bundles 445 // should not be linked with the runtime library. 446 if (Args.hasFlag(options::OPT_faddress_sanitizer, 447 options::OPT_fno_address_sanitizer, false)) { 448 if (Args.hasArg(options::OPT_dynamiclib) || 449 Args.hasArg(options::OPT_bundle)) return; 450 if (isTargetIPhoneOS()) { 451 getDriver().Diag(diag::err_drv_clang_unsupported_per_platform) 452 << "-faddress-sanitizer"; 453 } else { 454 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.asan_osx.a"); 455 456 // The ASAN runtime library requires C++ and CoreFoundation. 457 AddCXXStdlibLibArgs(Args, CmdArgs); 458 CmdArgs.push_back("-framework"); 459 CmdArgs.push_back("CoreFoundation"); 460 } 461 } 462 463 // Otherwise link libSystem, then the dynamic runtime library, and finally any 464 // target specific static runtime library. 465 CmdArgs.push_back("-lSystem"); 466 467 // Select the dynamic runtime library and the target specific static library. 468 if (isTargetIPhoneOS()) { 469 // If we are compiling as iOS / simulator, don't attempt to link libgcc_s.1, 470 // it never went into the SDK. 471 // Linking against libgcc_s.1 isn't needed for iOS 5.0+ 472 if (isIPhoneOSVersionLT(5, 0) && !isTargetIOSSimulator()) 473 CmdArgs.push_back("-lgcc_s.1"); 474 475 // We currently always need a static runtime library for iOS. 476 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.ios.a"); 477 } else { 478 // The dynamic runtime library was merged with libSystem for 10.6 and 479 // beyond; only 10.4 and 10.5 need an additional runtime library. 480 if (isMacosxVersionLT(10, 5)) 481 CmdArgs.push_back("-lgcc_s.10.4"); 482 else if (isMacosxVersionLT(10, 6)) 483 CmdArgs.push_back("-lgcc_s.10.5"); 484 485 // For OS X, we thought we would only need a static runtime library when 486 // targeting 10.4, to provide versions of the static functions which were 487 // omitted from 10.4.dylib. 488 // 489 // Unfortunately, that turned out to not be true, because Darwin system 490 // headers can still use eprintf on i386, and it is not exported from 491 // libSystem. Therefore, we still must provide a runtime library just for 492 // the tiny tiny handful of projects that *might* use that symbol. 493 if (isMacosxVersionLT(10, 5)) { 494 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.10.4.a"); 495 } else { 496 if (getTriple().getArch() == llvm::Triple::x86) 497 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.eprintf.a"); 498 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.osx.a"); 499 } 500 } 501} 502 503static inline StringRef SimulatorVersionDefineName() { 504 return "__IPHONE_OS_VERSION_MIN_REQUIRED"; 505} 506 507/// \brief Parse the simulator version define: 508/// __IPHONE_OS_VERSION_MIN_REQUIRED=([0-9])([0-9][0-9])([0-9][0-9]) 509// and return the grouped values as integers, e.g: 510// __IPHONE_OS_VERSION_MIN_REQUIRED=40201 511// will return Major=4, Minor=2, Micro=1. 512static bool GetVersionFromSimulatorDefine(StringRef define, 513 unsigned &Major, unsigned &Minor, 514 unsigned &Micro) { 515 assert(define.startswith(SimulatorVersionDefineName())); 516 StringRef name, version; 517 llvm::tie(name, version) = define.split('='); 518 if (version.empty()) 519 return false; 520 std::string verstr = version.str(); 521 char *end; 522 unsigned num = (unsigned) strtol(verstr.c_str(), &end, 10); 523 if (*end != '\0') 524 return false; 525 Major = num / 10000; 526 num = num % 10000; 527 Minor = num / 100; 528 Micro = num % 100; 529 return true; 530} 531 532void Darwin::AddDeploymentTarget(DerivedArgList &Args) const { 533 const OptTable &Opts = getDriver().getOpts(); 534 535 Arg *OSXVersion = Args.getLastArg(options::OPT_mmacosx_version_min_EQ); 536 Arg *iOSVersion = Args.getLastArg(options::OPT_miphoneos_version_min_EQ); 537 Arg *iOSSimVersion = Args.getLastArg( 538 options::OPT_mios_simulator_version_min_EQ); 539 540 // FIXME: HACK! When compiling for the simulator we don't get a 541 // '-miphoneos-version-min' to help us know whether there is an ARC runtime 542 // or not; try to parse a __IPHONE_OS_VERSION_MIN_REQUIRED 543 // define passed in command-line. 544 if (!iOSVersion && !iOSSimVersion) { 545 for (arg_iterator it = Args.filtered_begin(options::OPT_D), 546 ie = Args.filtered_end(); it != ie; ++it) { 547 StringRef define = (*it)->getValue(Args); 548 if (define.startswith(SimulatorVersionDefineName())) { 549 unsigned Major = 0, Minor = 0, Micro = 0; 550 if (GetVersionFromSimulatorDefine(define, Major, Minor, Micro) && 551 Major < 10 && Minor < 100 && Micro < 100) { 552 ARCRuntimeForSimulator = Major < 5 ? ARCSimulator_NoARCRuntime 553 : ARCSimulator_HasARCRuntime; 554 LibCXXForSimulator = Major < 5 ? LibCXXSimulator_NotAvailable 555 : LibCXXSimulator_Available; 556 } 557 break; 558 } 559 } 560 } 561 562 if (OSXVersion && (iOSVersion || iOSSimVersion)) { 563 getDriver().Diag(diag::err_drv_argument_not_allowed_with) 564 << OSXVersion->getAsString(Args) 565 << (iOSVersion ? iOSVersion : iOSSimVersion)->getAsString(Args); 566 iOSVersion = iOSSimVersion = 0; 567 } else if (iOSVersion && iOSSimVersion) { 568 getDriver().Diag(diag::err_drv_argument_not_allowed_with) 569 << iOSVersion->getAsString(Args) 570 << iOSSimVersion->getAsString(Args); 571 iOSSimVersion = 0; 572 } else if (!OSXVersion && !iOSVersion && !iOSSimVersion) { 573 // If no deployment target was specified on the command line, check for 574 // environment defines. 575 StringRef OSXTarget; 576 StringRef iOSTarget; 577 StringRef iOSSimTarget; 578 if (char *env = ::getenv("MACOSX_DEPLOYMENT_TARGET")) 579 OSXTarget = env; 580 if (char *env = ::getenv("IPHONEOS_DEPLOYMENT_TARGET")) 581 iOSTarget = env; 582 if (char *env = ::getenv("IOS_SIMULATOR_DEPLOYMENT_TARGET")) 583 iOSSimTarget = env; 584 585 // If no '-miphoneos-version-min' specified on the command line and 586 // IPHONEOS_DEPLOYMENT_TARGET is not defined, see if we can set the default 587 // based on isysroot. 588 if (iOSTarget.empty()) { 589 if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) { 590 StringRef first, second; 591 StringRef isysroot = A->getValue(Args); 592 llvm::tie(first, second) = isysroot.split(StringRef("SDKs/iPhoneOS")); 593 if (second != "") 594 iOSTarget = second.substr(0,3); 595 } 596 } 597 598 // If no OSX or iOS target has been specified and we're compiling for armv7, 599 // go ahead as assume we're targeting iOS. 600 if (OSXTarget.empty() && iOSTarget.empty()) 601 if (getDarwinArchName(Args) == "armv7") 602 iOSTarget = "0.0"; 603 604 // Handle conflicting deployment targets 605 // 606 // FIXME: Don't hardcode default here. 607 608 // Do not allow conflicts with the iOS simulator target. 609 if (!iOSSimTarget.empty() && (!OSXTarget.empty() || !iOSTarget.empty())) { 610 getDriver().Diag(diag::err_drv_conflicting_deployment_targets) 611 << "IOS_SIMULATOR_DEPLOYMENT_TARGET" 612 << (!OSXTarget.empty() ? "MACOSX_DEPLOYMENT_TARGET" : 613 "IPHONEOS_DEPLOYMENT_TARGET"); 614 } 615 616 // Allow conflicts among OSX and iOS for historical reasons, but choose the 617 // default platform. 618 if (!OSXTarget.empty() && !iOSTarget.empty()) { 619 if (getTriple().getArch() == llvm::Triple::arm || 620 getTriple().getArch() == llvm::Triple::thumb) 621 OSXTarget = ""; 622 else 623 iOSTarget = ""; 624 } 625 626 if (!OSXTarget.empty()) { 627 const Option *O = Opts.getOption(options::OPT_mmacosx_version_min_EQ); 628 OSXVersion = Args.MakeJoinedArg(0, O, OSXTarget); 629 Args.append(OSXVersion); 630 } else if (!iOSTarget.empty()) { 631 const Option *O = Opts.getOption(options::OPT_miphoneos_version_min_EQ); 632 iOSVersion = Args.MakeJoinedArg(0, O, iOSTarget); 633 Args.append(iOSVersion); 634 } else if (!iOSSimTarget.empty()) { 635 const Option *O = Opts.getOption( 636 options::OPT_mios_simulator_version_min_EQ); 637 iOSSimVersion = Args.MakeJoinedArg(0, O, iOSSimTarget); 638 Args.append(iOSSimVersion); 639 } else { 640 // Otherwise, assume we are targeting OS X. 641 const Option *O = Opts.getOption(options::OPT_mmacosx_version_min_EQ); 642 OSXVersion = Args.MakeJoinedArg(0, O, MacosxVersionMin); 643 Args.append(OSXVersion); 644 } 645 } 646 647 // Reject invalid architecture combinations. 648 if (iOSSimVersion && (getTriple().getArch() != llvm::Triple::x86 && 649 getTriple().getArch() != llvm::Triple::x86_64)) { 650 getDriver().Diag(diag::err_drv_invalid_arch_for_deployment_target) 651 << getTriple().getArchName() << iOSSimVersion->getAsString(Args); 652 } 653 654 // Set the tool chain target information. 655 unsigned Major, Minor, Micro; 656 bool HadExtra; 657 if (OSXVersion) { 658 assert((!iOSVersion && !iOSSimVersion) && "Unknown target platform!"); 659 if (!Driver::GetReleaseVersion(OSXVersion->getValue(Args), Major, Minor, 660 Micro, HadExtra) || HadExtra || 661 Major != 10 || Minor >= 100 || Micro >= 100) 662 getDriver().Diag(diag::err_drv_invalid_version_number) 663 << OSXVersion->getAsString(Args); 664 } else { 665 const Arg *Version = iOSVersion ? iOSVersion : iOSSimVersion; 666 assert(Version && "Unknown target platform!"); 667 if (!Driver::GetReleaseVersion(Version->getValue(Args), Major, Minor, 668 Micro, HadExtra) || HadExtra || 669 Major >= 10 || Minor >= 100 || Micro >= 100) 670 getDriver().Diag(diag::err_drv_invalid_version_number) 671 << Version->getAsString(Args); 672 } 673 674 bool IsIOSSim = bool(iOSSimVersion); 675 676 // In GCC, the simulator historically was treated as being OS X in some 677 // contexts, like determining the link logic, despite generally being called 678 // with an iOS deployment target. For compatibility, we detect the 679 // simulator as iOS + x86, and treat it differently in a few contexts. 680 if (iOSVersion && (getTriple().getArch() == llvm::Triple::x86 || 681 getTriple().getArch() == llvm::Triple::x86_64)) 682 IsIOSSim = true; 683 684 setTarget(/*IsIPhoneOS=*/ !OSXVersion, Major, Minor, Micro, IsIOSSim); 685} 686 687void DarwinClang::AddCXXStdlibLibArgs(const ArgList &Args, 688 ArgStringList &CmdArgs) const { 689 CXXStdlibType Type = GetCXXStdlibType(Args); 690 691 switch (Type) { 692 case ToolChain::CST_Libcxx: 693 CmdArgs.push_back("-lc++"); 694 break; 695 696 case ToolChain::CST_Libstdcxx: { 697 // Unfortunately, -lstdc++ doesn't always exist in the standard search path; 698 // it was previously found in the gcc lib dir. However, for all the Darwin 699 // platforms we care about it was -lstdc++.6, so we search for that 700 // explicitly if we can't see an obvious -lstdc++ candidate. 701 702 // Check in the sysroot first. 703 bool Exists; 704 if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) { 705 llvm::sys::Path P(A->getValue(Args)); 706 P.appendComponent("usr"); 707 P.appendComponent("lib"); 708 P.appendComponent("libstdc++.dylib"); 709 710 if (llvm::sys::fs::exists(P.str(), Exists) || !Exists) { 711 P.eraseComponent(); 712 P.appendComponent("libstdc++.6.dylib"); 713 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) { 714 CmdArgs.push_back(Args.MakeArgString(P.str())); 715 return; 716 } 717 } 718 } 719 720 // Otherwise, look in the root. 721 // FIXME: This should be removed someday when we don't have to care about 722 // 10.6 and earlier, where /usr/lib/libstdc++.dylib does not exist. 723 if ((llvm::sys::fs::exists("/usr/lib/libstdc++.dylib", Exists) || !Exists)&& 724 (!llvm::sys::fs::exists("/usr/lib/libstdc++.6.dylib", Exists) && Exists)){ 725 CmdArgs.push_back("/usr/lib/libstdc++.6.dylib"); 726 return; 727 } 728 729 // Otherwise, let the linker search. 730 CmdArgs.push_back("-lstdc++"); 731 break; 732 } 733 } 734} 735 736void DarwinClang::AddCCKextLibArgs(const ArgList &Args, 737 ArgStringList &CmdArgs) const { 738 739 // For Darwin platforms, use the compiler-rt-based support library 740 // instead of the gcc-provided one (which is also incidentally 741 // only present in the gcc lib dir, which makes it hard to find). 742 743 llvm::sys::Path P(getDriver().ResourceDir); 744 P.appendComponent("lib"); 745 P.appendComponent("darwin"); 746 P.appendComponent("libclang_rt.cc_kext.a"); 747 748 // For now, allow missing resource libraries to support developers who may 749 // not have compiler-rt checked out or integrated into their build. 750 bool Exists; 751 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) 752 CmdArgs.push_back(Args.MakeArgString(P.str())); 753} 754 755DerivedArgList *Darwin::TranslateArgs(const DerivedArgList &Args, 756 const char *BoundArch) const { 757 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs()); 758 const OptTable &Opts = getDriver().getOpts(); 759 760 // FIXME: We really want to get out of the tool chain level argument 761 // translation business, as it makes the driver functionality much 762 // more opaque. For now, we follow gcc closely solely for the 763 // purpose of easily achieving feature parity & testability. Once we 764 // have something that works, we should reevaluate each translation 765 // and try to push it down into tool specific logic. 766 767 for (ArgList::const_iterator it = Args.begin(), 768 ie = Args.end(); it != ie; ++it) { 769 Arg *A = *it; 770 771 if (A->getOption().matches(options::OPT_Xarch__)) { 772 // Skip this argument unless the architecture matches either the toolchain 773 // triple arch, or the arch being bound. 774 // 775 // FIXME: Canonicalize name. 776 StringRef XarchArch = A->getValue(Args, 0); 777 if (!(XarchArch == getArchName() || 778 (BoundArch && XarchArch == BoundArch))) 779 continue; 780 781 Arg *OriginalArg = A; 782 unsigned Index = Args.getBaseArgs().MakeIndex(A->getValue(Args, 1)); 783 unsigned Prev = Index; 784 Arg *XarchArg = Opts.ParseOneArg(Args, Index); 785 786 // If the argument parsing failed or more than one argument was 787 // consumed, the -Xarch_ argument's parameter tried to consume 788 // extra arguments. Emit an error and ignore. 789 // 790 // We also want to disallow any options which would alter the 791 // driver behavior; that isn't going to work in our model. We 792 // use isDriverOption() as an approximation, although things 793 // like -O4 are going to slip through. 794 if (!XarchArg || Index > Prev + 1) { 795 getDriver().Diag(diag::err_drv_invalid_Xarch_argument_with_args) 796 << A->getAsString(Args); 797 continue; 798 } else if (XarchArg->getOption().isDriverOption()) { 799 getDriver().Diag(diag::err_drv_invalid_Xarch_argument_isdriver) 800 << A->getAsString(Args); 801 continue; 802 } 803 804 XarchArg->setBaseArg(A); 805 A = XarchArg; 806 807 DAL->AddSynthesizedArg(A); 808 809 // Linker input arguments require custom handling. The problem is that we 810 // have already constructed the phase actions, so we can not treat them as 811 // "input arguments". 812 if (A->getOption().isLinkerInput()) { 813 // Convert the argument into individual Zlinker_input_args. 814 for (unsigned i = 0, e = A->getNumValues(); i != e; ++i) { 815 DAL->AddSeparateArg(OriginalArg, 816 Opts.getOption(options::OPT_Zlinker_input), 817 A->getValue(Args, i)); 818 819 } 820 continue; 821 } 822 } 823 824 // Sob. These is strictly gcc compatible for the time being. Apple 825 // gcc translates options twice, which means that self-expanding 826 // options add duplicates. 827 switch ((options::ID) A->getOption().getID()) { 828 default: 829 DAL->append(A); 830 break; 831 832 case options::OPT_mkernel: 833 case options::OPT_fapple_kext: 834 DAL->append(A); 835 DAL->AddFlagArg(A, Opts.getOption(options::OPT_static)); 836 break; 837 838 case options::OPT_dependency_file: 839 DAL->AddSeparateArg(A, Opts.getOption(options::OPT_MF), 840 A->getValue(Args)); 841 break; 842 843 case options::OPT_gfull: 844 DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag)); 845 DAL->AddFlagArg(A, 846 Opts.getOption(options::OPT_fno_eliminate_unused_debug_symbols)); 847 break; 848 849 case options::OPT_gused: 850 DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag)); 851 DAL->AddFlagArg(A, 852 Opts.getOption(options::OPT_feliminate_unused_debug_symbols)); 853 break; 854 855 case options::OPT_shared: 856 DAL->AddFlagArg(A, Opts.getOption(options::OPT_dynamiclib)); 857 break; 858 859 case options::OPT_fconstant_cfstrings: 860 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mconstant_cfstrings)); 861 break; 862 863 case options::OPT_fno_constant_cfstrings: 864 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_constant_cfstrings)); 865 break; 866 867 case options::OPT_Wnonportable_cfstrings: 868 DAL->AddFlagArg(A, 869 Opts.getOption(options::OPT_mwarn_nonportable_cfstrings)); 870 break; 871 872 case options::OPT_Wno_nonportable_cfstrings: 873 DAL->AddFlagArg(A, 874 Opts.getOption(options::OPT_mno_warn_nonportable_cfstrings)); 875 break; 876 877 case options::OPT_fpascal_strings: 878 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mpascal_strings)); 879 break; 880 881 case options::OPT_fno_pascal_strings: 882 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_pascal_strings)); 883 break; 884 } 885 } 886 887 if (getTriple().getArch() == llvm::Triple::x86 || 888 getTriple().getArch() == llvm::Triple::x86_64) 889 if (!Args.hasArgNoClaim(options::OPT_mtune_EQ)) 890 DAL->AddJoinedArg(0, Opts.getOption(options::OPT_mtune_EQ), "core2"); 891 892 // Add the arch options based on the particular spelling of -arch, to match 893 // how the driver driver works. 894 if (BoundArch) { 895 StringRef Name = BoundArch; 896 const Option *MCpu = Opts.getOption(options::OPT_mcpu_EQ); 897 const Option *MArch = Opts.getOption(options::OPT_march_EQ); 898 899 // This code must be kept in sync with LLVM's getArchTypeForDarwinArch, 900 // which defines the list of which architectures we accept. 901 if (Name == "ppc") 902 ; 903 else if (Name == "ppc601") 904 DAL->AddJoinedArg(0, MCpu, "601"); 905 else if (Name == "ppc603") 906 DAL->AddJoinedArg(0, MCpu, "603"); 907 else if (Name == "ppc604") 908 DAL->AddJoinedArg(0, MCpu, "604"); 909 else if (Name == "ppc604e") 910 DAL->AddJoinedArg(0, MCpu, "604e"); 911 else if (Name == "ppc750") 912 DAL->AddJoinedArg(0, MCpu, "750"); 913 else if (Name == "ppc7400") 914 DAL->AddJoinedArg(0, MCpu, "7400"); 915 else if (Name == "ppc7450") 916 DAL->AddJoinedArg(0, MCpu, "7450"); 917 else if (Name == "ppc970") 918 DAL->AddJoinedArg(0, MCpu, "970"); 919 920 else if (Name == "ppc64") 921 DAL->AddFlagArg(0, Opts.getOption(options::OPT_m64)); 922 923 else if (Name == "i386") 924 ; 925 else if (Name == "i486") 926 DAL->AddJoinedArg(0, MArch, "i486"); 927 else if (Name == "i586") 928 DAL->AddJoinedArg(0, MArch, "i586"); 929 else if (Name == "i686") 930 DAL->AddJoinedArg(0, MArch, "i686"); 931 else if (Name == "pentium") 932 DAL->AddJoinedArg(0, MArch, "pentium"); 933 else if (Name == "pentium2") 934 DAL->AddJoinedArg(0, MArch, "pentium2"); 935 else if (Name == "pentpro") 936 DAL->AddJoinedArg(0, MArch, "pentiumpro"); 937 else if (Name == "pentIIm3") 938 DAL->AddJoinedArg(0, MArch, "pentium2"); 939 940 else if (Name == "x86_64") 941 DAL->AddFlagArg(0, Opts.getOption(options::OPT_m64)); 942 943 else if (Name == "arm") 944 DAL->AddJoinedArg(0, MArch, "armv4t"); 945 else if (Name == "armv4t") 946 DAL->AddJoinedArg(0, MArch, "armv4t"); 947 else if (Name == "armv5") 948 DAL->AddJoinedArg(0, MArch, "armv5tej"); 949 else if (Name == "xscale") 950 DAL->AddJoinedArg(0, MArch, "xscale"); 951 else if (Name == "armv6") 952 DAL->AddJoinedArg(0, MArch, "armv6k"); 953 else if (Name == "armv7") 954 DAL->AddJoinedArg(0, MArch, "armv7a"); 955 956 else 957 llvm_unreachable("invalid Darwin arch"); 958 } 959 960 // Add an explicit version min argument for the deployment target. We do this 961 // after argument translation because -Xarch_ arguments may add a version min 962 // argument. 963 AddDeploymentTarget(*DAL); 964 965 // Validate the C++ standard library choice. 966 CXXStdlibType Type = GetCXXStdlibType(*DAL); 967 if (Type == ToolChain::CST_Libcxx) { 968 switch (LibCXXForSimulator) { 969 case LibCXXSimulator_None: 970 // Handle non-simulator cases. 971 if (isTargetIPhoneOS()) { 972 if (isIPhoneOSVersionLT(5, 0)) { 973 getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment) 974 << "iOS 5.0"; 975 } 976 } 977 break; 978 case LibCXXSimulator_NotAvailable: 979 getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment) 980 << "iOS 5.0"; 981 break; 982 case LibCXXSimulator_Available: 983 break; 984 } 985 } 986 987 return DAL; 988} 989 990bool Darwin::IsUnwindTablesDefault() const { 991 // FIXME: Gross; we should probably have some separate target 992 // definition, possibly even reusing the one in clang. 993 return getArchName() == "x86_64"; 994} 995 996bool Darwin::UseDwarfDebugFlags() const { 997 if (const char *S = ::getenv("RC_DEBUG_OPTIONS")) 998 return S[0] != '\0'; 999 return false; 1000} 1001 1002bool Darwin::UseSjLjExceptions() const { 1003 // Darwin uses SjLj exceptions on ARM. 1004 return (getTriple().getArch() == llvm::Triple::arm || 1005 getTriple().getArch() == llvm::Triple::thumb); 1006} 1007 1008const char *Darwin::GetDefaultRelocationModel() const { 1009 return "pic"; 1010} 1011 1012const char *Darwin::GetForcedPicModel() const { 1013 if (getArchName() == "x86_64") 1014 return "pic"; 1015 return 0; 1016} 1017 1018bool Darwin::SupportsProfiling() const { 1019 // Profiling instrumentation is only supported on x86. 1020 return getArchName() == "i386" || getArchName() == "x86_64"; 1021} 1022 1023bool Darwin::SupportsObjCGC() const { 1024 // Garbage collection is supported everywhere except on iPhone OS. 1025 return !isTargetIPhoneOS(); 1026} 1027 1028bool Darwin::SupportsObjCARC() const { 1029 return isTargetIPhoneOS() || !isMacosxVersionLT(10, 6); 1030} 1031 1032std::string 1033Darwin_Generic_GCC::ComputeEffectiveClangTriple(const ArgList &Args, 1034 types::ID InputType) const { 1035 return ComputeLLVMTriple(Args, InputType); 1036} 1037 1038/// Generic_GCC - A tool chain using the 'gcc' command to perform 1039/// all subcommands; this relies on gcc translating the majority of 1040/// command line options. 1041 1042/// \brief Parse a GCCVersion object out of a string of text. 1043/// 1044/// This is the primary means of forming GCCVersion objects. 1045/*static*/ 1046Generic_GCC::GCCVersion Linux::GCCVersion::Parse(StringRef VersionText) { 1047 const GCCVersion BadVersion = { VersionText.str(), -1, -1, -1, "" }; 1048 std::pair<StringRef, StringRef> First = VersionText.split('.'); 1049 std::pair<StringRef, StringRef> Second = First.second.split('.'); 1050 1051 GCCVersion GoodVersion = { VersionText.str(), -1, -1, -1, "" }; 1052 if (First.first.getAsInteger(10, GoodVersion.Major) || 1053 GoodVersion.Major < 0) 1054 return BadVersion; 1055 if (Second.first.getAsInteger(10, GoodVersion.Minor) || 1056 GoodVersion.Minor < 0) 1057 return BadVersion; 1058 1059 // First look for a number prefix and parse that if present. Otherwise just 1060 // stash the entire patch string in the suffix, and leave the number 1061 // unspecified. This covers versions strings such as: 1062 // 4.4 1063 // 4.4.0 1064 // 4.4.x 1065 // 4.4.2-rc4 1066 // 4.4.x-patched 1067 // And retains any patch number it finds. 1068 StringRef PatchText = GoodVersion.PatchSuffix = Second.second.str(); 1069 if (!PatchText.empty()) { 1070 if (unsigned EndNumber = PatchText.find_first_not_of("0123456789")) { 1071 // Try to parse the number and any suffix. 1072 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) || 1073 GoodVersion.Patch < 0) 1074 return BadVersion; 1075 GoodVersion.PatchSuffix = PatchText.substr(EndNumber).str(); 1076 } 1077 } 1078 1079 return GoodVersion; 1080} 1081 1082/// \brief Less-than for GCCVersion, implementing a Strict Weak Ordering. 1083bool Generic_GCC::GCCVersion::operator<(const GCCVersion &RHS) const { 1084 if (Major < RHS.Major) return true; if (Major > RHS.Major) return false; 1085 if (Minor < RHS.Minor) return true; if (Minor > RHS.Minor) return false; 1086 1087 // Note that we rank versions with *no* patch specified is better than ones 1088 // hard-coding a patch version. Thus if the RHS has no patch, it always 1089 // wins, and the LHS only wins if it has no patch and the RHS does have 1090 // a patch. 1091 if (RHS.Patch == -1) return true; if (Patch == -1) return false; 1092 if (Patch < RHS.Patch) return true; if (Patch > RHS.Patch) return false; 1093 1094 // Finally, between completely tied version numbers, the version with the 1095 // suffix loses as we prefer full releases. 1096 if (RHS.PatchSuffix.empty()) return true; 1097 return false; 1098} 1099 1100static StringRef getGCCToolchainDir(const ArgList &Args) { 1101 const Arg *A = Args.getLastArg(options::OPT_gcc_toolchain); 1102 if (A) 1103 return A->getValue(Args); 1104 return GCC_INSTALL_PREFIX; 1105} 1106 1107/// \brief Construct a GCCInstallationDetector from the driver. 1108/// 1109/// This performs all of the autodetection and sets up the various paths. 1110/// Once constructed, a GCCInstallation is esentially immutable. 1111/// 1112/// FIXME: We shouldn't need an explicit TargetTriple parameter here, and 1113/// should instead pull the target out of the driver. This is currently 1114/// necessary because the driver doesn't store the final version of the target 1115/// triple. 1116Generic_GCC::GCCInstallationDetector::GCCInstallationDetector( 1117 const Driver &D, 1118 const llvm::Triple &TargetTriple, 1119 const ArgList &Args) 1120 : IsValid(false) { 1121 llvm::Triple MultiarchTriple 1122 = TargetTriple.isArch32Bit() ? TargetTriple.get64BitArchVariant() 1123 : TargetTriple.get32BitArchVariant(); 1124 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 1125 // The library directories which may contain GCC installations. 1126 SmallVector<StringRef, 4> CandidateLibDirs, CandidateMultiarchLibDirs; 1127 // The compatible GCC triples for this particular architecture. 1128 SmallVector<StringRef, 10> CandidateTripleAliases; 1129 SmallVector<StringRef, 10> CandidateMultiarchTripleAliases; 1130 CollectLibDirsAndTriples(TargetTriple, MultiarchTriple, CandidateLibDirs, 1131 CandidateTripleAliases, 1132 CandidateMultiarchLibDirs, 1133 CandidateMultiarchTripleAliases); 1134 1135 // Compute the set of prefixes for our search. 1136 SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(), 1137 D.PrefixDirs.end()); 1138 1139 StringRef GCCToolchainDir = getGCCToolchainDir(Args); 1140 if (GCCToolchainDir != "") { 1141 if (GCCToolchainDir.back() == '/') 1142 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the / 1143 1144 Prefixes.push_back(GCCToolchainDir); 1145 } else { 1146 Prefixes.push_back(D.SysRoot); 1147 Prefixes.push_back(D.SysRoot + "/usr"); 1148 Prefixes.push_back(D.InstalledDir + "/.."); 1149 } 1150 1151 // Loop over the various components which exist and select the best GCC 1152 // installation available. GCC installs are ranked by version number. 1153 Version = GCCVersion::Parse("0.0.0"); 1154 for (unsigned i = 0, ie = Prefixes.size(); i < ie; ++i) { 1155 if (!llvm::sys::fs::exists(Prefixes[i])) 1156 continue; 1157 for (unsigned j = 0, je = CandidateLibDirs.size(); j < je; ++j) { 1158 const std::string LibDir = Prefixes[i] + CandidateLibDirs[j].str(); 1159 if (!llvm::sys::fs::exists(LibDir)) 1160 continue; 1161 for (unsigned k = 0, ke = CandidateTripleAliases.size(); k < ke; ++k) 1162 ScanLibDirForGCCTriple(TargetArch, LibDir, CandidateTripleAliases[k]); 1163 } 1164 for (unsigned j = 0, je = CandidateMultiarchLibDirs.size(); j < je; ++j) { 1165 const std::string LibDir 1166 = Prefixes[i] + CandidateMultiarchLibDirs[j].str(); 1167 if (!llvm::sys::fs::exists(LibDir)) 1168 continue; 1169 for (unsigned k = 0, ke = CandidateMultiarchTripleAliases.size(); k < ke; 1170 ++k) 1171 ScanLibDirForGCCTriple(TargetArch, LibDir, 1172 CandidateMultiarchTripleAliases[k], 1173 /*NeedsMultiarchSuffix=*/true); 1174 } 1175 } 1176} 1177 1178/*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples( 1179 const llvm::Triple &TargetTriple, 1180 const llvm::Triple &MultiarchTriple, 1181 SmallVectorImpl<StringRef> &LibDirs, 1182 SmallVectorImpl<StringRef> &TripleAliases, 1183 SmallVectorImpl<StringRef> &MultiarchLibDirs, 1184 SmallVectorImpl<StringRef> &MultiarchTripleAliases) { 1185 // Declare a bunch of static data sets that we'll select between below. These 1186 // are specifically designed to always refer to string literals to avoid any 1187 // lifetime or initialization issues. 1188 static const char *const ARMLibDirs[] = { "/lib" }; 1189 static const char *const ARMTriples[] = { 1190 "arm-linux-gnueabi", 1191 "arm-linux-androideabi" 1192 }; 1193 1194 static const char *const X86_64LibDirs[] = { "/lib64", "/lib" }; 1195 static const char *const X86_64Triples[] = { 1196 "x86_64-linux-gnu", 1197 "x86_64-unknown-linux-gnu", 1198 "x86_64-pc-linux-gnu", 1199 "x86_64-redhat-linux6E", 1200 "x86_64-redhat-linux", 1201 "x86_64-suse-linux", 1202 "x86_64-manbo-linux-gnu", 1203 "x86_64-linux-gnu", 1204 "x86_64-slackware-linux" 1205 }; 1206 static const char *const X86LibDirs[] = { "/lib32", "/lib" }; 1207 static const char *const X86Triples[] = { 1208 "i686-linux-gnu", 1209 "i686-pc-linux-gnu", 1210 "i486-linux-gnu", 1211 "i386-linux-gnu", 1212 "i686-redhat-linux", 1213 "i586-redhat-linux", 1214 "i386-redhat-linux", 1215 "i586-suse-linux", 1216 "i486-slackware-linux" 1217 }; 1218 1219 static const char *const MIPSLibDirs[] = { "/lib" }; 1220 static const char *const MIPSTriples[] = { "mips-linux-gnu" }; 1221 static const char *const MIPSELLibDirs[] = { "/lib" }; 1222 static const char *const MIPSELTriples[] = { "mipsel-linux-gnu" }; 1223 1224 static const char *const PPCLibDirs[] = { "/lib32", "/lib" }; 1225 static const char *const PPCTriples[] = { 1226 "powerpc-linux-gnu", 1227 "powerpc-unknown-linux-gnu", 1228 "powerpc-suse-linux" 1229 }; 1230 static const char *const PPC64LibDirs[] = { "/lib64", "/lib" }; 1231 static const char *const PPC64Triples[] = { 1232 "powerpc64-linux-gnu", 1233 "powerpc64-unknown-linux-gnu", 1234 "powerpc64-suse-linux", 1235 "ppc64-redhat-linux" 1236 }; 1237 1238 switch (TargetTriple.getArch()) { 1239 case llvm::Triple::arm: 1240 case llvm::Triple::thumb: 1241 LibDirs.append(ARMLibDirs, ARMLibDirs + llvm::array_lengthof(ARMLibDirs)); 1242 TripleAliases.append( 1243 ARMTriples, ARMTriples + llvm::array_lengthof(ARMTriples)); 1244 break; 1245 case llvm::Triple::x86_64: 1246 LibDirs.append( 1247 X86_64LibDirs, X86_64LibDirs + llvm::array_lengthof(X86_64LibDirs)); 1248 TripleAliases.append( 1249 X86_64Triples, X86_64Triples + llvm::array_lengthof(X86_64Triples)); 1250 MultiarchLibDirs.append( 1251 X86LibDirs, X86LibDirs + llvm::array_lengthof(X86LibDirs)); 1252 MultiarchTripleAliases.append( 1253 X86Triples, X86Triples + llvm::array_lengthof(X86Triples)); 1254 break; 1255 case llvm::Triple::x86: 1256 LibDirs.append(X86LibDirs, X86LibDirs + llvm::array_lengthof(X86LibDirs)); 1257 TripleAliases.append( 1258 X86Triples, X86Triples + llvm::array_lengthof(X86Triples)); 1259 MultiarchLibDirs.append( 1260 X86_64LibDirs, X86_64LibDirs + llvm::array_lengthof(X86_64LibDirs)); 1261 MultiarchTripleAliases.append( 1262 X86_64Triples, X86_64Triples + llvm::array_lengthof(X86_64Triples)); 1263 break; 1264 case llvm::Triple::mips: 1265 LibDirs.append( 1266 MIPSLibDirs, MIPSLibDirs + llvm::array_lengthof(MIPSLibDirs)); 1267 TripleAliases.append( 1268 MIPSTriples, MIPSTriples + llvm::array_lengthof(MIPSTriples)); 1269 break; 1270 case llvm::Triple::mipsel: 1271 LibDirs.append( 1272 MIPSELLibDirs, MIPSELLibDirs + llvm::array_lengthof(MIPSELLibDirs)); 1273 TripleAliases.append( 1274 MIPSELTriples, MIPSELTriples + llvm::array_lengthof(MIPSELTriples)); 1275 break; 1276 case llvm::Triple::ppc: 1277 LibDirs.append(PPCLibDirs, PPCLibDirs + llvm::array_lengthof(PPCLibDirs)); 1278 TripleAliases.append( 1279 PPCTriples, PPCTriples + llvm::array_lengthof(PPCTriples)); 1280 MultiarchLibDirs.append( 1281 PPC64LibDirs, PPC64LibDirs + llvm::array_lengthof(PPC64LibDirs)); 1282 MultiarchTripleAliases.append( 1283 PPC64Triples, PPC64Triples + llvm::array_lengthof(PPC64Triples)); 1284 break; 1285 case llvm::Triple::ppc64: 1286 LibDirs.append( 1287 PPC64LibDirs, PPC64LibDirs + llvm::array_lengthof(PPC64LibDirs)); 1288 TripleAliases.append( 1289 PPC64Triples, PPC64Triples + llvm::array_lengthof(PPC64Triples)); 1290 MultiarchLibDirs.append( 1291 PPCLibDirs, PPCLibDirs + llvm::array_lengthof(PPCLibDirs)); 1292 MultiarchTripleAliases.append( 1293 PPCTriples, PPCTriples + llvm::array_lengthof(PPCTriples)); 1294 break; 1295 1296 default: 1297 // By default, just rely on the standard lib directories and the original 1298 // triple. 1299 break; 1300 } 1301 1302 // Always append the drivers target triple to the end, in case it doesn't 1303 // match any of our aliases. 1304 TripleAliases.push_back(TargetTriple.str()); 1305 1306 // Also include the multiarch variant if it's different. 1307 if (TargetTriple.str() != MultiarchTriple.str()) 1308 MultiarchTripleAliases.push_back(MultiarchTriple.str()); 1309} 1310 1311void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple( 1312 llvm::Triple::ArchType TargetArch, const std::string &LibDir, 1313 StringRef CandidateTriple, bool NeedsMultiarchSuffix) { 1314 // There are various different suffixes involving the triple we 1315 // check for. We also record what is necessary to walk from each back 1316 // up to the lib directory. 1317 const std::string LibSuffixes[] = { 1318 "/gcc/" + CandidateTriple.str(), 1319 "/" + CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), 1320 1321 // Ubuntu has a strange mis-matched pair of triples that this happens to 1322 // match. 1323 // FIXME: It may be worthwhile to generalize this and look for a second 1324 // triple. 1325 "/i386-linux-gnu/gcc/" + CandidateTriple.str() 1326 }; 1327 const std::string InstallSuffixes[] = { 1328 "/../../..", 1329 "/../../../..", 1330 "/../../../.." 1331 }; 1332 // Only look at the final, weird Ubuntu suffix for i386-linux-gnu. 1333 const unsigned NumLibSuffixes = (llvm::array_lengthof(LibSuffixes) - 1334 (TargetArch != llvm::Triple::x86)); 1335 for (unsigned i = 0; i < NumLibSuffixes; ++i) { 1336 StringRef LibSuffix = LibSuffixes[i]; 1337 llvm::error_code EC; 1338 for (llvm::sys::fs::directory_iterator LI(LibDir + LibSuffix, EC), LE; 1339 !EC && LI != LE; LI = LI.increment(EC)) { 1340 StringRef VersionText = llvm::sys::path::filename(LI->path()); 1341 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 1342 static const GCCVersion MinVersion = { "4.1.1", 4, 1, 1, "" }; 1343 if (CandidateVersion < MinVersion) 1344 continue; 1345 if (CandidateVersion <= Version) 1346 continue; 1347 1348 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs 1349 // in what would normally be GCCInstallPath and put the 64-bit 1350 // libs in a subdirectory named 64. The simple logic we follow is that 1351 // *if* there is a subdirectory of the right name with crtbegin.o in it, 1352 // we use that. If not, and if not a multiarch triple, we look for 1353 // crtbegin.o without the subdirectory. 1354 StringRef MultiarchSuffix 1355 = (TargetArch == llvm::Triple::x86_64 || 1356 TargetArch == llvm::Triple::ppc64) ? "/64" : "/32"; 1357 if (llvm::sys::fs::exists(LI->path() + MultiarchSuffix + "/crtbegin.o")) { 1358 GCCMultiarchSuffix = MultiarchSuffix.str(); 1359 } else { 1360 if (NeedsMultiarchSuffix || 1361 !llvm::sys::fs::exists(LI->path() + "/crtbegin.o")) 1362 continue; 1363 GCCMultiarchSuffix.clear(); 1364 } 1365 1366 Version = CandidateVersion; 1367 GCCTriple.setTriple(CandidateTriple); 1368 // FIXME: We hack together the directory name here instead of 1369 // using LI to ensure stable path separators across Windows and 1370 // Linux. 1371 GCCInstallPath = LibDir + LibSuffixes[i] + "/" + VersionText.str(); 1372 GCCParentLibPath = GCCInstallPath + InstallSuffixes[i]; 1373 IsValid = true; 1374 } 1375 } 1376} 1377 1378Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple& Triple, 1379 const ArgList &Args) 1380 : ToolChain(D, Triple), GCCInstallation(getDriver(), Triple, Args) { 1381 getProgramPaths().push_back(getDriver().getInstalledDir()); 1382 if (getDriver().getInstalledDir() != getDriver().Dir) 1383 getProgramPaths().push_back(getDriver().Dir); 1384} 1385 1386Generic_GCC::~Generic_GCC() { 1387 // Free tool implementations. 1388 for (llvm::DenseMap<unsigned, Tool*>::iterator 1389 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 1390 delete it->second; 1391} 1392 1393Tool &Generic_GCC::SelectTool(const Compilation &C, 1394 const JobAction &JA, 1395 const ActionList &Inputs) const { 1396 Action::ActionClass Key; 1397 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1398 Key = Action::AnalyzeJobClass; 1399 else 1400 Key = JA.getKind(); 1401 1402 Tool *&T = Tools[Key]; 1403 if (!T) { 1404 switch (Key) { 1405 case Action::InputClass: 1406 case Action::BindArchClass: 1407 llvm_unreachable("Invalid tool kind."); 1408 case Action::PreprocessJobClass: 1409 T = new tools::gcc::Preprocess(*this); break; 1410 case Action::PrecompileJobClass: 1411 T = new tools::gcc::Precompile(*this); break; 1412 case Action::AnalyzeJobClass: 1413 case Action::MigrateJobClass: 1414 T = new tools::Clang(*this); break; 1415 case Action::CompileJobClass: 1416 T = new tools::gcc::Compile(*this); break; 1417 case Action::AssembleJobClass: 1418 T = new tools::gcc::Assemble(*this); break; 1419 case Action::LinkJobClass: 1420 T = new tools::gcc::Link(*this); break; 1421 1422 // This is a bit ungeneric, but the only platform using a driver 1423 // driver is Darwin. 1424 case Action::LipoJobClass: 1425 T = new tools::darwin::Lipo(*this); break; 1426 case Action::DsymutilJobClass: 1427 T = new tools::darwin::Dsymutil(*this); break; 1428 case Action::VerifyJobClass: 1429 T = new tools::darwin::VerifyDebug(*this); break; 1430 } 1431 } 1432 1433 return *T; 1434} 1435 1436bool Generic_GCC::IsUnwindTablesDefault() const { 1437 // FIXME: Gross; we should probably have some separate target 1438 // definition, possibly even reusing the one in clang. 1439 return getArchName() == "x86_64"; 1440} 1441 1442const char *Generic_GCC::GetDefaultRelocationModel() const { 1443 return "static"; 1444} 1445 1446const char *Generic_GCC::GetForcedPicModel() const { 1447 return 0; 1448} 1449/// Hexagon Toolchain 1450 1451Hexagon_TC::Hexagon_TC(const Driver &D, const llvm::Triple& Triple) 1452 : ToolChain(D, Triple) { 1453 getProgramPaths().push_back(getDriver().getInstalledDir()); 1454 if (getDriver().getInstalledDir() != getDriver().Dir.c_str()) 1455 getProgramPaths().push_back(getDriver().Dir); 1456} 1457 1458Hexagon_TC::~Hexagon_TC() { 1459 // Free tool implementations. 1460 for (llvm::DenseMap<unsigned, Tool*>::iterator 1461 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 1462 delete it->second; 1463} 1464 1465Tool &Hexagon_TC::SelectTool(const Compilation &C, 1466 const JobAction &JA, 1467 const ActionList &Inputs) const { 1468 Action::ActionClass Key; 1469 // if (JA.getKind () == Action::CompileJobClass) 1470 // Key = JA.getKind (); 1471 // else 1472 1473 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1474 Key = Action::AnalyzeJobClass; 1475 else 1476 Key = JA.getKind(); 1477 // if ((JA.getKind () == Action::CompileJobClass) 1478 // && (JA.getType () != types::TY_LTO_BC)) { 1479 // Key = JA.getKind (); 1480 // } 1481 1482 Tool *&T = Tools[Key]; 1483 if (!T) { 1484 switch (Key) { 1485 case Action::InputClass: 1486 case Action::BindArchClass: 1487 assert(0 && "Invalid tool kind."); 1488 case Action::AnalyzeJobClass: 1489 T = new tools::Clang(*this); break; 1490 case Action::AssembleJobClass: 1491 T = new tools::hexagon::Assemble(*this); break; 1492 case Action::LinkJobClass: 1493 T = new tools::hexagon::Link(*this); break; 1494 default: 1495 assert(false && "Unsupported action for Hexagon target."); 1496 } 1497 } 1498 1499 return *T; 1500} 1501 1502bool Hexagon_TC::IsUnwindTablesDefault() const { 1503 // FIXME: Gross; we should probably have some separate target 1504 // definition, possibly even reusing the one in clang. 1505 return getArchName() == "x86_64"; 1506} 1507 1508const char *Hexagon_TC::GetDefaultRelocationModel() const { 1509 return "static"; 1510} 1511 1512const char *Hexagon_TC::GetForcedPicModel() const { 1513 return 0; 1514} // End Hexagon 1515 1516 1517/// TCEToolChain - A tool chain using the llvm bitcode tools to perform 1518/// all subcommands. See http://tce.cs.tut.fi for our peculiar target. 1519/// Currently does not support anything else but compilation. 1520 1521TCEToolChain::TCEToolChain(const Driver &D, const llvm::Triple& Triple) 1522 : ToolChain(D, Triple) { 1523 // Path mangling to find libexec 1524 std::string Path(getDriver().Dir); 1525 1526 Path += "/../libexec"; 1527 getProgramPaths().push_back(Path); 1528} 1529 1530TCEToolChain::~TCEToolChain() { 1531 for (llvm::DenseMap<unsigned, Tool*>::iterator 1532 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 1533 delete it->second; 1534} 1535 1536bool TCEToolChain::IsMathErrnoDefault() const { 1537 return true; 1538} 1539 1540bool TCEToolChain::IsUnwindTablesDefault() const { 1541 return false; 1542} 1543 1544const char *TCEToolChain::GetDefaultRelocationModel() const { 1545 return "static"; 1546} 1547 1548const char *TCEToolChain::GetForcedPicModel() const { 1549 return 0; 1550} 1551 1552Tool &TCEToolChain::SelectTool(const Compilation &C, 1553 const JobAction &JA, 1554 const ActionList &Inputs) const { 1555 Action::ActionClass Key; 1556 Key = Action::AnalyzeJobClass; 1557 1558 Tool *&T = Tools[Key]; 1559 if (!T) { 1560 switch (Key) { 1561 case Action::PreprocessJobClass: 1562 T = new tools::gcc::Preprocess(*this); break; 1563 case Action::AnalyzeJobClass: 1564 T = new tools::Clang(*this); break; 1565 default: 1566 llvm_unreachable("Unsupported action for TCE target."); 1567 } 1568 } 1569 return *T; 1570} 1571 1572/// OpenBSD - OpenBSD tool chain which can call as(1) and ld(1) directly. 1573 1574OpenBSD::OpenBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1575 : Generic_ELF(D, Triple, Args) { 1576 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1577 getFilePaths().push_back("/usr/lib"); 1578} 1579 1580Tool &OpenBSD::SelectTool(const Compilation &C, const JobAction &JA, 1581 const ActionList &Inputs) const { 1582 Action::ActionClass Key; 1583 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1584 Key = Action::AnalyzeJobClass; 1585 else 1586 Key = JA.getKind(); 1587 1588 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 1589 options::OPT_no_integrated_as, 1590 IsIntegratedAssemblerDefault()); 1591 1592 Tool *&T = Tools[Key]; 1593 if (!T) { 1594 switch (Key) { 1595 case Action::AssembleJobClass: { 1596 if (UseIntegratedAs) 1597 T = new tools::ClangAs(*this); 1598 else 1599 T = new tools::openbsd::Assemble(*this); 1600 break; 1601 } 1602 case Action::LinkJobClass: 1603 T = new tools::openbsd::Link(*this); break; 1604 default: 1605 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1606 } 1607 } 1608 1609 return *T; 1610} 1611 1612/// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly. 1613 1614FreeBSD::FreeBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1615 : Generic_ELF(D, Triple, Args) { 1616 1617 // When targeting 32-bit platforms, look for '/usr/lib32/crt1.o' and fall 1618 // back to '/usr/lib' if it doesn't exist. 1619 if ((Triple.getArch() == llvm::Triple::x86 || 1620 Triple.getArch() == llvm::Triple::ppc) && 1621 llvm::sys::fs::exists(getDriver().SysRoot + CLANG_PREFIX "/usr/lib32/crt1.o")) 1622 getFilePaths().push_back(getDriver().SysRoot + CLANG_PREFIX "/usr/lib32"); 1623 else 1624 getFilePaths().push_back(getDriver().SysRoot + CLANG_PREFIX "/usr/lib"); 1625} 1626 1627Tool &FreeBSD::SelectTool(const Compilation &C, const JobAction &JA, 1628 const ActionList &Inputs) const { 1629 Action::ActionClass Key; 1630 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1631 Key = Action::AnalyzeJobClass; 1632 else 1633 Key = JA.getKind(); 1634 1635 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 1636 options::OPT_no_integrated_as, 1637 IsIntegratedAssemblerDefault()); 1638 1639 Tool *&T = Tools[Key]; 1640 if (!T) { 1641 switch (Key) { 1642 case Action::AssembleJobClass: 1643 if (UseIntegratedAs) 1644 T = new tools::ClangAs(*this); 1645 else 1646 T = new tools::freebsd::Assemble(*this); 1647 break; 1648 case Action::LinkJobClass: 1649 T = new tools::freebsd::Link(*this); break; 1650 default: 1651 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1652 } 1653 } 1654 1655 return *T; 1656} 1657 1658/// NetBSD - NetBSD tool chain which can call as(1) and ld(1) directly. 1659 1660NetBSD::NetBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1661 : Generic_ELF(D, Triple, Args) { 1662 1663 if (getDriver().UseStdLib) { 1664 // When targeting a 32-bit platform, try the special directory used on 1665 // 64-bit hosts, and only fall back to the main library directory if that 1666 // doesn't work. 1667 // FIXME: It'd be nicer to test if this directory exists, but I'm not sure 1668 // what all logic is needed to emulate the '=' prefix here. 1669 if (Triple.getArch() == llvm::Triple::x86) 1670 getFilePaths().push_back("=/usr/lib/i386"); 1671 1672 getFilePaths().push_back("=/usr/lib"); 1673 } 1674} 1675 1676Tool &NetBSD::SelectTool(const Compilation &C, const JobAction &JA, 1677 const ActionList &Inputs) const { 1678 Action::ActionClass Key; 1679 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1680 Key = Action::AnalyzeJobClass; 1681 else 1682 Key = JA.getKind(); 1683 1684 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 1685 options::OPT_no_integrated_as, 1686 IsIntegratedAssemblerDefault()); 1687 1688 Tool *&T = Tools[Key]; 1689 if (!T) { 1690 switch (Key) { 1691 case Action::AssembleJobClass: 1692 if (UseIntegratedAs) 1693 T = new tools::ClangAs(*this); 1694 else 1695 T = new tools::netbsd::Assemble(*this); 1696 break; 1697 case Action::LinkJobClass: 1698 T = new tools::netbsd::Link(*this); 1699 break; 1700 default: 1701 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1702 } 1703 } 1704 1705 return *T; 1706} 1707 1708/// Minix - Minix tool chain which can call as(1) and ld(1) directly. 1709 1710Minix::Minix(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1711 : Generic_ELF(D, Triple, Args) { 1712 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1713 getFilePaths().push_back("/usr/lib"); 1714} 1715 1716Tool &Minix::SelectTool(const Compilation &C, const JobAction &JA, 1717 const ActionList &Inputs) const { 1718 Action::ActionClass Key; 1719 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1720 Key = Action::AnalyzeJobClass; 1721 else 1722 Key = JA.getKind(); 1723 1724 Tool *&T = Tools[Key]; 1725 if (!T) { 1726 switch (Key) { 1727 case Action::AssembleJobClass: 1728 T = new tools::minix::Assemble(*this); break; 1729 case Action::LinkJobClass: 1730 T = new tools::minix::Link(*this); break; 1731 default: 1732 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1733 } 1734 } 1735 1736 return *T; 1737} 1738 1739/// AuroraUX - AuroraUX tool chain which can call as(1) and ld(1) directly. 1740 1741AuroraUX::AuroraUX(const Driver &D, const llvm::Triple& Triple, 1742 const ArgList &Args) 1743 : Generic_GCC(D, Triple, Args) { 1744 1745 getProgramPaths().push_back(getDriver().getInstalledDir()); 1746 if (getDriver().getInstalledDir() != getDriver().Dir) 1747 getProgramPaths().push_back(getDriver().Dir); 1748 1749 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1750 getFilePaths().push_back("/usr/lib"); 1751 getFilePaths().push_back("/usr/sfw/lib"); 1752 getFilePaths().push_back("/opt/gcc4/lib"); 1753 getFilePaths().push_back("/opt/gcc4/lib/gcc/i386-pc-solaris2.11/4.2.4"); 1754 1755} 1756 1757Tool &AuroraUX::SelectTool(const Compilation &C, const JobAction &JA, 1758 const ActionList &Inputs) const { 1759 Action::ActionClass Key; 1760 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1761 Key = Action::AnalyzeJobClass; 1762 else 1763 Key = JA.getKind(); 1764 1765 Tool *&T = Tools[Key]; 1766 if (!T) { 1767 switch (Key) { 1768 case Action::AssembleJobClass: 1769 T = new tools::auroraux::Assemble(*this); break; 1770 case Action::LinkJobClass: 1771 T = new tools::auroraux::Link(*this); break; 1772 default: 1773 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1774 } 1775 } 1776 1777 return *T; 1778} 1779 1780/// Solaris - Solaris tool chain which can call as(1) and ld(1) directly. 1781 1782Solaris::Solaris(const Driver &D, const llvm::Triple& Triple, 1783 const ArgList &Args) 1784 : Generic_GCC(D, Triple, Args) { 1785 1786 getProgramPaths().push_back(getDriver().getInstalledDir()); 1787 if (getDriver().getInstalledDir() != getDriver().Dir) 1788 getProgramPaths().push_back(getDriver().Dir); 1789 1790 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1791 getFilePaths().push_back("/usr/lib"); 1792} 1793 1794Tool &Solaris::SelectTool(const Compilation &C, const JobAction &JA, 1795 const ActionList &Inputs) const { 1796 Action::ActionClass Key; 1797 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1798 Key = Action::AnalyzeJobClass; 1799 else 1800 Key = JA.getKind(); 1801 1802 Tool *&T = Tools[Key]; 1803 if (!T) { 1804 switch (Key) { 1805 case Action::AssembleJobClass: 1806 T = new tools::solaris::Assemble(*this); break; 1807 case Action::LinkJobClass: 1808 T = new tools::solaris::Link(*this); break; 1809 default: 1810 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1811 } 1812 } 1813 1814 return *T; 1815} 1816 1817/// Linux toolchain (very bare-bones at the moment). 1818 1819enum LinuxDistro { 1820 ArchLinux, 1821 DebianLenny, 1822 DebianSqueeze, 1823 DebianWheezy, 1824 Exherbo, 1825 RHEL4, 1826 RHEL5, 1827 RHEL6, 1828 Fedora13, 1829 Fedora14, 1830 Fedora15, 1831 Fedora16, 1832 FedoraRawhide, 1833 OpenSuse11_3, 1834 OpenSuse11_4, 1835 OpenSuse12_1, 1836 UbuntuHardy, 1837 UbuntuIntrepid, 1838 UbuntuJaunty, 1839 UbuntuKarmic, 1840 UbuntuLucid, 1841 UbuntuMaverick, 1842 UbuntuNatty, 1843 UbuntuOneiric, 1844 UbuntuPrecise, 1845 UnknownDistro 1846}; 1847 1848static bool IsRedhat(enum LinuxDistro Distro) { 1849 return (Distro >= Fedora13 && Distro <= FedoraRawhide) || 1850 (Distro >= RHEL4 && Distro <= RHEL6); 1851} 1852 1853static bool IsOpenSuse(enum LinuxDistro Distro) { 1854 return Distro >= OpenSuse11_3 && Distro <= OpenSuse12_1; 1855} 1856 1857static bool IsDebian(enum LinuxDistro Distro) { 1858 return Distro >= DebianLenny && Distro <= DebianWheezy; 1859} 1860 1861static bool IsUbuntu(enum LinuxDistro Distro) { 1862 return Distro >= UbuntuHardy && Distro <= UbuntuPrecise; 1863} 1864 1865static LinuxDistro DetectLinuxDistro(llvm::Triple::ArchType Arch) { 1866 OwningPtr<llvm::MemoryBuffer> File; 1867 if (!llvm::MemoryBuffer::getFile("/etc/lsb-release", File)) { 1868 StringRef Data = File.get()->getBuffer(); 1869 SmallVector<StringRef, 8> Lines; 1870 Data.split(Lines, "\n"); 1871 LinuxDistro Version = UnknownDistro; 1872 for (unsigned i = 0, s = Lines.size(); i != s; ++i) 1873 if (Version == UnknownDistro && Lines[i].startswith("DISTRIB_CODENAME=")) 1874 Version = llvm::StringSwitch<LinuxDistro>(Lines[i].substr(17)) 1875 .Case("hardy", UbuntuHardy) 1876 .Case("intrepid", UbuntuIntrepid) 1877 .Case("jaunty", UbuntuJaunty) 1878 .Case("karmic", UbuntuKarmic) 1879 .Case("lucid", UbuntuLucid) 1880 .Case("maverick", UbuntuMaverick) 1881 .Case("natty", UbuntuNatty) 1882 .Case("oneiric", UbuntuOneiric) 1883 .Case("precise", UbuntuPrecise) 1884 .Default(UnknownDistro); 1885 return Version; 1886 } 1887 1888 if (!llvm::MemoryBuffer::getFile("/etc/redhat-release", File)) { 1889 StringRef Data = File.get()->getBuffer(); 1890 if (Data.startswith("Fedora release 16")) 1891 return Fedora16; 1892 else if (Data.startswith("Fedora release 15")) 1893 return Fedora15; 1894 else if (Data.startswith("Fedora release 14")) 1895 return Fedora14; 1896 else if (Data.startswith("Fedora release 13")) 1897 return Fedora13; 1898 else if (Data.startswith("Fedora release") && 1899 Data.find("Rawhide") != StringRef::npos) 1900 return FedoraRawhide; 1901 else if (Data.startswith("Red Hat Enterprise Linux") && 1902 Data.find("release 6") != StringRef::npos) 1903 return RHEL6; 1904 else if ((Data.startswith("Red Hat Enterprise Linux") || 1905 Data.startswith("CentOS")) && 1906 Data.find("release 5") != StringRef::npos) 1907 return RHEL5; 1908 else if ((Data.startswith("Red Hat Enterprise Linux") || 1909 Data.startswith("CentOS")) && 1910 Data.find("release 4") != StringRef::npos) 1911 return RHEL4; 1912 return UnknownDistro; 1913 } 1914 1915 if (!llvm::MemoryBuffer::getFile("/etc/debian_version", File)) { 1916 StringRef Data = File.get()->getBuffer(); 1917 if (Data[0] == '5') 1918 return DebianLenny; 1919 else if (Data.startswith("squeeze/sid") || Data[0] == '6') 1920 return DebianSqueeze; 1921 else if (Data.startswith("wheezy/sid") || Data[0] == '7') 1922 return DebianWheezy; 1923 return UnknownDistro; 1924 } 1925 1926 if (!llvm::MemoryBuffer::getFile("/etc/SuSE-release", File)) 1927 return llvm::StringSwitch<LinuxDistro>(File.get()->getBuffer()) 1928 .StartsWith("openSUSE 11.3", OpenSuse11_3) 1929 .StartsWith("openSUSE 11.4", OpenSuse11_4) 1930 .StartsWith("openSUSE 12.1", OpenSuse12_1) 1931 .Default(UnknownDistro); 1932 1933 bool Exists; 1934 if (!llvm::sys::fs::exists("/etc/exherbo-release", Exists) && Exists) 1935 return Exherbo; 1936 1937 if (!llvm::sys::fs::exists("/etc/arch-release", Exists) && Exists) 1938 return ArchLinux; 1939 1940 return UnknownDistro; 1941} 1942 1943/// \brief Get our best guess at the multiarch triple for a target. 1944/// 1945/// Debian-based systems are starting to use a multiarch setup where they use 1946/// a target-triple directory in the library and header search paths. 1947/// Unfortunately, this triple does not align with the vanilla target triple, 1948/// so we provide a rough mapping here. 1949static std::string getMultiarchTriple(const llvm::Triple TargetTriple, 1950 StringRef SysRoot) { 1951 // For most architectures, just use whatever we have rather than trying to be 1952 // clever. 1953 switch (TargetTriple.getArch()) { 1954 default: 1955 return TargetTriple.str(); 1956 1957 // We use the existence of '/lib/<triple>' as a directory to detect some 1958 // common linux triples that don't quite match the Clang triple for both 1959 // 32-bit and 64-bit targets. Multiarch fixes its install triples to these 1960 // regardless of what the actual target triple is. 1961 case llvm::Triple::x86: 1962 if (llvm::sys::fs::exists(SysRoot + "/lib/i386-linux-gnu")) 1963 return "i386-linux-gnu"; 1964 return TargetTriple.str(); 1965 case llvm::Triple::x86_64: 1966 if (llvm::sys::fs::exists(SysRoot + "/lib/x86_64-linux-gnu")) 1967 return "x86_64-linux-gnu"; 1968 return TargetTriple.str(); 1969 case llvm::Triple::mips: 1970 if (llvm::sys::fs::exists(SysRoot + "/lib/mips-linux-gnu")) 1971 return "mips-linux-gnu"; 1972 return TargetTriple.str(); 1973 case llvm::Triple::mipsel: 1974 if (llvm::sys::fs::exists(SysRoot + "/lib/mipsel-linux-gnu")) 1975 return "mipsel-linux-gnu"; 1976 return TargetTriple.str(); 1977 case llvm::Triple::ppc: 1978 if (llvm::sys::fs::exists(SysRoot + "/lib/powerpc-linux-gnu")) 1979 return "powerpc-linux-gnu"; 1980 return TargetTriple.str(); 1981 case llvm::Triple::ppc64: 1982 if (llvm::sys::fs::exists(SysRoot + "/lib/powerpc64-linux-gnu")) 1983 return "powerpc64-linux-gnu"; 1984 return TargetTriple.str(); 1985 } 1986} 1987 1988static void addPathIfExists(Twine Path, ToolChain::path_list &Paths) { 1989 if (llvm::sys::fs::exists(Path)) Paths.push_back(Path.str()); 1990} 1991 1992Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) 1993 : Generic_ELF(D, Triple, Args) { 1994 llvm::Triple::ArchType Arch = Triple.getArch(); 1995 const std::string &SysRoot = getDriver().SysRoot; 1996 1997 // OpenSuse stores the linker with the compiler, add that to the search 1998 // path. 1999 ToolChain::path_list &PPaths = getProgramPaths(); 2000 PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" + 2001 GCCInstallation.getTriple().str() + "/bin").str()); 2002 2003 Linker = GetProgramPath("ld"); 2004 2005 LinuxDistro Distro = DetectLinuxDistro(Arch); 2006 2007 if (IsOpenSuse(Distro) || IsUbuntu(Distro)) { 2008 ExtraOpts.push_back("-z"); 2009 ExtraOpts.push_back("relro"); 2010 } 2011 2012 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb) 2013 ExtraOpts.push_back("-X"); 2014 2015 const bool IsMips = Arch == llvm::Triple::mips || 2016 Arch == llvm::Triple::mipsel || 2017 Arch == llvm::Triple::mips64 || 2018 Arch == llvm::Triple::mips64el; 2019 2020 const bool IsAndroid = Triple.getEnvironment() == llvm::Triple::ANDROIDEABI; 2021 2022 // Do not use 'gnu' hash style for Mips targets because .gnu.hash 2023 // and the MIPS ABI require .dynsym to be sorted in different ways. 2024 // .gnu.hash needs symbols to be grouped by hash code whereas the MIPS 2025 // ABI requires a mapping between the GOT and the symbol table. 2026 // Android loader does not support .gnu.hash. 2027 if (!IsMips && !IsAndroid) { 2028 if (IsRedhat(Distro) || IsOpenSuse(Distro) || 2029 (IsUbuntu(Distro) && Distro >= UbuntuMaverick)) 2030 ExtraOpts.push_back("--hash-style=gnu"); 2031 2032 if (IsDebian(Distro) || IsOpenSuse(Distro) || Distro == UbuntuLucid || 2033 Distro == UbuntuJaunty || Distro == UbuntuKarmic) 2034 ExtraOpts.push_back("--hash-style=both"); 2035 } 2036 2037 if (IsRedhat(Distro)) 2038 ExtraOpts.push_back("--no-add-needed"); 2039 2040 if (Distro == DebianSqueeze || Distro == DebianWheezy || 2041 IsOpenSuse(Distro) || 2042 (IsRedhat(Distro) && Distro != RHEL4 && Distro != RHEL5) || 2043 (IsUbuntu(Distro) && Distro >= UbuntuKarmic)) 2044 ExtraOpts.push_back("--build-id"); 2045 2046 if (IsOpenSuse(Distro)) 2047 ExtraOpts.push_back("--enable-new-dtags"); 2048 2049 // The selection of paths to try here is designed to match the patterns which 2050 // the GCC driver itself uses, as this is part of the GCC-compatible driver. 2051 // This was determined by running GCC in a fake filesystem, creating all 2052 // possible permutations of these directories, and seeing which ones it added 2053 // to the link paths. 2054 path_list &Paths = getFilePaths(); 2055 2056 const std::string Multilib = Triple.isArch32Bit() ? "lib32" : "lib64"; 2057 const std::string MultiarchTriple = getMultiarchTriple(Triple, SysRoot); 2058 2059 // Add the multilib suffixed paths where they are available. 2060 if (GCCInstallation.isValid()) { 2061 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2062 const std::string &LibPath = GCCInstallation.getParentLibPath(); 2063 addPathIfExists((GCCInstallation.getInstallPath() + 2064 GCCInstallation.getMultiarchSuffix()), 2065 Paths); 2066 2067 // If the GCC installation we found is inside of the sysroot, we want to 2068 // prefer libraries installed in the parent prefix of the GCC installation. 2069 // It is important to *not* use these paths when the GCC installation is 2070 // outside of the system root as that can pick up un-intented libraries. 2071 // This usually happens when there is an external cross compiler on the 2072 // host system, and a more minimal sysroot available that is the target of 2073 // the cross. 2074 if (StringRef(LibPath).startswith(SysRoot)) { 2075 addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib/../" + Multilib, 2076 Paths); 2077 addPathIfExists(LibPath + "/" + MultiarchTriple, Paths); 2078 addPathIfExists(LibPath + "/../" + Multilib, Paths); 2079 } 2080 } 2081 addPathIfExists(SysRoot + "/lib/" + MultiarchTriple, Paths); 2082 addPathIfExists(SysRoot + "/lib/../" + Multilib, Paths); 2083 addPathIfExists(SysRoot + "/usr/lib/" + MultiarchTriple, Paths); 2084 addPathIfExists(SysRoot + "/usr/lib/../" + Multilib, Paths); 2085 2086 // Try walking via the GCC triple path in case of multiarch GCC 2087 // installations with strange symlinks. 2088 if (GCCInstallation.isValid()) 2089 addPathIfExists(SysRoot + "/usr/lib/" + GCCInstallation.getTriple().str() + 2090 "/../../" + Multilib, Paths); 2091 2092 // Add the non-multilib suffixed paths (if potentially different). 2093 if (GCCInstallation.isValid()) { 2094 const std::string &LibPath = GCCInstallation.getParentLibPath(); 2095 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2096 if (!GCCInstallation.getMultiarchSuffix().empty()) 2097 addPathIfExists(GCCInstallation.getInstallPath(), Paths); 2098 2099 if (StringRef(LibPath).startswith(SysRoot)) { 2100 addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib", Paths); 2101 addPathIfExists(LibPath, Paths); 2102 } 2103 } 2104 addPathIfExists(SysRoot + "/lib", Paths); 2105 addPathIfExists(SysRoot + "/usr/lib", Paths); 2106} 2107 2108bool Linux::HasNativeLLVMSupport() const { 2109 return true; 2110} 2111 2112Tool &Linux::SelectTool(const Compilation &C, const JobAction &JA, 2113 const ActionList &Inputs) const { 2114 Action::ActionClass Key; 2115 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 2116 Key = Action::AnalyzeJobClass; 2117 else 2118 Key = JA.getKind(); 2119 2120 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 2121 options::OPT_no_integrated_as, 2122 IsIntegratedAssemblerDefault()); 2123 2124 Tool *&T = Tools[Key]; 2125 if (!T) { 2126 switch (Key) { 2127 case Action::AssembleJobClass: 2128 if (UseIntegratedAs) 2129 T = new tools::ClangAs(*this); 2130 else 2131 T = new tools::linuxtools::Assemble(*this); 2132 break; 2133 case Action::LinkJobClass: 2134 T = new tools::linuxtools::Link(*this); break; 2135 default: 2136 T = &Generic_GCC::SelectTool(C, JA, Inputs); 2137 } 2138 } 2139 2140 return *T; 2141} 2142 2143void Linux::AddClangSystemIncludeArgs(const ArgList &DriverArgs, 2144 ArgStringList &CC1Args) const { 2145 const Driver &D = getDriver(); 2146 2147 if (DriverArgs.hasArg(options::OPT_nostdinc)) 2148 return; 2149 2150 if (!DriverArgs.hasArg(options::OPT_nostdlibinc)) 2151 addSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/usr/local/include"); 2152 2153 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) { 2154 llvm::sys::Path P(D.ResourceDir); 2155 P.appendComponent("include"); 2156 addSystemInclude(DriverArgs, CC1Args, P.str()); 2157 } 2158 2159 if (DriverArgs.hasArg(options::OPT_nostdlibinc)) 2160 return; 2161 2162 // Check for configure-time C include directories. 2163 StringRef CIncludeDirs(C_INCLUDE_DIRS); 2164 if (CIncludeDirs != "") { 2165 SmallVector<StringRef, 5> dirs; 2166 CIncludeDirs.split(dirs, ":"); 2167 for (SmallVectorImpl<StringRef>::iterator I = dirs.begin(), E = dirs.end(); 2168 I != E; ++I) { 2169 StringRef Prefix = llvm::sys::path::is_absolute(*I) ? D.SysRoot : ""; 2170 addExternCSystemInclude(DriverArgs, CC1Args, Prefix + *I); 2171 } 2172 return; 2173 } 2174 2175 // Lacking those, try to detect the correct set of system includes for the 2176 // target triple. 2177 2178 // Implement generic Debian multiarch support. 2179 const StringRef X86_64MultiarchIncludeDirs[] = { 2180 "/usr/include/x86_64-linux-gnu", 2181 2182 // FIXME: These are older forms of multiarch. It's not clear that they're 2183 // in use in any released version of Debian, so we should consider 2184 // removing them. 2185 "/usr/include/i686-linux-gnu/64", 2186 "/usr/include/i486-linux-gnu/64" 2187 }; 2188 const StringRef X86MultiarchIncludeDirs[] = { 2189 "/usr/include/i386-linux-gnu", 2190 2191 // FIXME: These are older forms of multiarch. It's not clear that they're 2192 // in use in any released version of Debian, so we should consider 2193 // removing them. 2194 "/usr/include/x86_64-linux-gnu/32", 2195 "/usr/include/i686-linux-gnu", 2196 "/usr/include/i486-linux-gnu" 2197 }; 2198 const StringRef ARMMultiarchIncludeDirs[] = { 2199 "/usr/include/arm-linux-gnueabi" 2200 }; 2201 const StringRef MIPSMultiarchIncludeDirs[] = { 2202 "/usr/include/mips-linux-gnu" 2203 }; 2204 const StringRef MIPSELMultiarchIncludeDirs[] = { 2205 "/usr/include/mipsel-linux-gnu" 2206 }; 2207 const StringRef PPCMultiarchIncludeDirs[] = { 2208 "/usr/include/powerpc-linux-gnu" 2209 }; 2210 const StringRef PPC64MultiarchIncludeDirs[] = { 2211 "/usr/include/powerpc64-linux-gnu" 2212 }; 2213 ArrayRef<StringRef> MultiarchIncludeDirs; 2214 if (getTriple().getArch() == llvm::Triple::x86_64) { 2215 MultiarchIncludeDirs = X86_64MultiarchIncludeDirs; 2216 } else if (getTriple().getArch() == llvm::Triple::x86) { 2217 MultiarchIncludeDirs = X86MultiarchIncludeDirs; 2218 } else if (getTriple().getArch() == llvm::Triple::arm) { 2219 MultiarchIncludeDirs = ARMMultiarchIncludeDirs; 2220 } else if (getTriple().getArch() == llvm::Triple::mips) { 2221 MultiarchIncludeDirs = MIPSMultiarchIncludeDirs; 2222 } else if (getTriple().getArch() == llvm::Triple::mipsel) { 2223 MultiarchIncludeDirs = MIPSELMultiarchIncludeDirs; 2224 } else if (getTriple().getArch() == llvm::Triple::ppc) { 2225 MultiarchIncludeDirs = PPCMultiarchIncludeDirs; 2226 } else if (getTriple().getArch() == llvm::Triple::ppc64) { 2227 MultiarchIncludeDirs = PPC64MultiarchIncludeDirs; 2228 } 2229 for (ArrayRef<StringRef>::iterator I = MultiarchIncludeDirs.begin(), 2230 E = MultiarchIncludeDirs.end(); 2231 I != E; ++I) { 2232 if (llvm::sys::fs::exists(D.SysRoot + *I)) { 2233 addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + *I); 2234 break; 2235 } 2236 } 2237 2238 if (getTriple().getOS() == llvm::Triple::RTEMS) 2239 return; 2240 2241 // Add an include of '/include' directly. This isn't provided by default by 2242 // system GCCs, but is often used with cross-compiling GCCs, and harmless to 2243 // add even when Clang is acting as-if it were a system compiler. 2244 addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/include"); 2245 2246 addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/usr/include"); 2247} 2248 2249/// \brief Helper to add the thre variant paths for a libstdc++ installation. 2250/*static*/ bool Linux::addLibStdCXXIncludePaths(Twine Base, Twine TargetArchDir, 2251 const ArgList &DriverArgs, 2252 ArgStringList &CC1Args) { 2253 if (!llvm::sys::fs::exists(Base)) 2254 return false; 2255 addSystemInclude(DriverArgs, CC1Args, Base); 2256 addSystemInclude(DriverArgs, CC1Args, Base + "/" + TargetArchDir); 2257 addSystemInclude(DriverArgs, CC1Args, Base + "/backward"); 2258 return true; 2259} 2260 2261void Linux::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 2262 ArgStringList &CC1Args) const { 2263 if (DriverArgs.hasArg(options::OPT_nostdlibinc) || 2264 DriverArgs.hasArg(options::OPT_nostdincxx)) 2265 return; 2266 2267 // Check if libc++ has been enabled and provide its include paths if so. 2268 if (GetCXXStdlibType(DriverArgs) == ToolChain::CST_Libcxx) { 2269 // libc++ is always installed at a fixed path on Linux currently. 2270 addSystemInclude(DriverArgs, CC1Args, 2271 getDriver().SysRoot + "/usr/include/c++/v1"); 2272 return; 2273 } 2274 2275 // We need a detected GCC installation on Linux to provide libstdc++'s 2276 // headers. We handled the libc++ case above. 2277 if (!GCCInstallation.isValid()) 2278 return; 2279 2280 // By default, look for the C++ headers in an include directory adjacent to 2281 // the lib directory of the GCC installation. Note that this is expect to be 2282 // equivalent to '/usr/include/c++/X.Y' in almost all cases. 2283 StringRef LibDir = GCCInstallation.getParentLibPath(); 2284 StringRef InstallDir = GCCInstallation.getInstallPath(); 2285 StringRef Version = GCCInstallation.getVersion(); 2286 if (!addLibStdCXXIncludePaths(LibDir + "/../include/c++/" + Version, 2287 (GCCInstallation.getTriple().str() + 2288 GCCInstallation.getMultiarchSuffix()), 2289 DriverArgs, CC1Args)) { 2290 // Gentoo is weird and places its headers inside the GCC install, so if the 2291 // first attempt to find the headers fails, try this pattern. 2292 addLibStdCXXIncludePaths(InstallDir + "/include/g++-v4", 2293 (GCCInstallation.getTriple().str() + 2294 GCCInstallation.getMultiarchSuffix()), 2295 DriverArgs, CC1Args); 2296 } 2297} 2298 2299/// DragonFly - DragonFly tool chain which can call as(1) and ld(1) directly. 2300 2301DragonFly::DragonFly(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 2302 : Generic_ELF(D, Triple, Args) { 2303 2304 // Path mangling to find libexec 2305 getProgramPaths().push_back(getDriver().getInstalledDir()); 2306 if (getDriver().getInstalledDir() != getDriver().Dir) 2307 getProgramPaths().push_back(getDriver().Dir); 2308 2309 getFilePaths().push_back(getDriver().Dir + "/../lib"); 2310 getFilePaths().push_back("/usr/lib"); 2311 getFilePaths().push_back("/usr/lib/gcc41"); 2312} 2313 2314Tool &DragonFly::SelectTool(const Compilation &C, const JobAction &JA, 2315 const ActionList &Inputs) const { 2316 Action::ActionClass Key; 2317 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 2318 Key = Action::AnalyzeJobClass; 2319 else 2320 Key = JA.getKind(); 2321 2322 Tool *&T = Tools[Key]; 2323 if (!T) { 2324 switch (Key) { 2325 case Action::AssembleJobClass: 2326 T = new tools::dragonfly::Assemble(*this); break; 2327 case Action::LinkJobClass: 2328 T = new tools::dragonfly::Link(*this); break; 2329 default: 2330 T = &Generic_GCC::SelectTool(C, JA, Inputs); 2331 } 2332 } 2333 2334 return *T; 2335} 2336