ToolChains.cpp revision 76f74ad696abe882e4ee6466913f554580ec5a59
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/OptTable.h" 18#include "clang/Driver/Option.h" 19#include "clang/Driver/Options.h" 20#include "clang/Basic/ObjCRuntime.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{ 47 // Compute the initial Darwin version from the triple 48 unsigned Major, Minor, Micro; 49 if (!Triple.getMacOSXVersion(Major, Minor, Micro)) 50 getDriver().Diag(diag::err_drv_invalid_darwin_version) << 51 Triple.getOSName(); 52 llvm::raw_string_ostream(MacosxVersionMin) 53 << Major << '.' << Minor << '.' << Micro; 54 55 // FIXME: DarwinVersion is only used to find GCC's libexec directory. 56 // It should be removed when we stop supporting that. 57 DarwinVersion[0] = Minor + 4; 58 DarwinVersion[1] = Micro; 59 DarwinVersion[2] = 0; 60 61 // Compute the initial iOS version from the triple 62 Triple.getiOSVersion(Major, Minor, Micro); 63 llvm::raw_string_ostream(iOSVersionMin) 64 << Major << '.' << Minor << '.' << Micro; 65} 66 67types::ID Darwin::LookupTypeForExtension(const char *Ext) const { 68 types::ID Ty = types::lookupTypeForExtension(Ext); 69 70 // Darwin always preprocesses assembly files (unless -x is used explicitly). 71 if (Ty == types::TY_PP_Asm) 72 return types::TY_Asm; 73 74 return Ty; 75} 76 77bool Darwin::HasNativeLLVMSupport() const { 78 return true; 79} 80 81/// Darwin provides an ARC runtime starting in MacOS X 10.7 and iOS 5.0. 82ObjCRuntime Darwin::getDefaultObjCRuntime(bool isNonFragile) const { 83 if (isTargetIPhoneOS()) { 84 return ObjCRuntime(ObjCRuntime::iOS, TargetVersion); 85 } else if (TargetSimulatorVersionFromDefines != VersionTuple()) { 86 return ObjCRuntime(ObjCRuntime::iOS, TargetSimulatorVersionFromDefines); 87 } else { 88 if (isNonFragile) { 89 return ObjCRuntime(ObjCRuntime::MacOSX, TargetVersion); 90 } else { 91 return ObjCRuntime(ObjCRuntime::FragileMacOSX, TargetVersion); 92 } 93 } 94} 95 96/// Darwin provides a blocks runtime starting in MacOS X 10.6 and iOS 3.2. 97bool Darwin::hasBlocksRuntime() const { 98 if (isTargetIPhoneOS()) 99 return !isIPhoneOSVersionLT(3, 2); 100 else 101 return !isMacosxVersionLT(10, 6); 102} 103 104static const char *GetArmArchForMArch(StringRef Value) { 105 return llvm::StringSwitch<const char*>(Value) 106 .Case("armv6k", "armv6") 107 .Case("armv5tej", "armv5") 108 .Case("xscale", "xscale") 109 .Case("armv4t", "armv4t") 110 .Case("armv7", "armv7") 111 .Cases("armv7a", "armv7-a", "armv7") 112 .Cases("armv7r", "armv7-r", "armv7") 113 .Cases("armv7m", "armv7-m", "armv7") 114 .Default(0); 115} 116 117static const char *GetArmArchForMCpu(StringRef Value) { 118 return llvm::StringSwitch<const char *>(Value) 119 .Cases("arm9e", "arm946e-s", "arm966e-s", "arm968e-s", "arm926ej-s","armv5") 120 .Cases("arm10e", "arm10tdmi", "armv5") 121 .Cases("arm1020t", "arm1020e", "arm1022e", "arm1026ej-s", "armv5") 122 .Case("xscale", "xscale") 123 .Cases("arm1136j-s", "arm1136jf-s", "arm1176jz-s", 124 "arm1176jzf-s", "cortex-m0", "armv6") 125 .Cases("cortex-a8", "cortex-r4", "cortex-m3", "cortex-a9", "cortex-a15", 126 "armv7") 127 .Default(0); 128} 129 130StringRef Darwin::getDarwinArchName(const ArgList &Args) const { 131 switch (getTriple().getArch()) { 132 default: 133 return getArchName(); 134 135 case llvm::Triple::thumb: 136 case llvm::Triple::arm: { 137 if (const Arg *A = Args.getLastArg(options::OPT_march_EQ)) 138 if (const char *Arch = GetArmArchForMArch(A->getValue(Args))) 139 return Arch; 140 141 if (const Arg *A = Args.getLastArg(options::OPT_mcpu_EQ)) 142 if (const char *Arch = GetArmArchForMCpu(A->getValue(Args))) 143 return Arch; 144 145 return "arm"; 146 } 147 } 148} 149 150Darwin::~Darwin() { 151 // Free tool implementations. 152 for (llvm::DenseMap<unsigned, Tool*>::iterator 153 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 154 delete it->second; 155} 156 157std::string Darwin::ComputeEffectiveClangTriple(const ArgList &Args, 158 types::ID InputType) const { 159 llvm::Triple Triple(ComputeLLVMTriple(Args, InputType)); 160 161 // If the target isn't initialized (e.g., an unknown Darwin platform, return 162 // the default triple). 163 if (!isTargetInitialized()) 164 return Triple.getTriple(); 165 166 SmallString<16> Str; 167 Str += isTargetIPhoneOS() ? "ios" : "macosx"; 168 Str += getTargetVersion().getAsString(); 169 Triple.setOSName(Str); 170 171 return Triple.getTriple(); 172} 173 174void Generic_ELF::anchor() {} 175 176Tool &Darwin::SelectTool(const Compilation &C, const JobAction &JA, 177 const ActionList &Inputs) const { 178 Action::ActionClass Key = JA.getKind(); 179 bool useClang = false; 180 181 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) { 182 useClang = true; 183 // Fallback to llvm-gcc for i386 kext compiles, we don't support that ABI. 184 if (!getDriver().shouldForceClangUse() && 185 Inputs.size() == 1 && 186 types::isCXX(Inputs[0]->getType()) && 187 getTriple().isOSDarwin() && 188 getTriple().getArch() == llvm::Triple::x86 && 189 (C.getArgs().getLastArg(options::OPT_fapple_kext) || 190 C.getArgs().getLastArg(options::OPT_mkernel))) 191 useClang = false; 192 } 193 194 // FIXME: This seems like a hacky way to choose clang frontend. 195 if (useClang) 196 Key = Action::AnalyzeJobClass; 197 198 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 199 options::OPT_no_integrated_as, 200 IsIntegratedAssemblerDefault()); 201 202 Tool *&T = Tools[Key]; 203 if (!T) { 204 switch (Key) { 205 case Action::InputClass: 206 case Action::BindArchClass: 207 llvm_unreachable("Invalid tool kind."); 208 case Action::PreprocessJobClass: 209 T = new tools::darwin::Preprocess(*this); break; 210 case Action::AnalyzeJobClass: 211 case Action::MigrateJobClass: 212 T = new tools::Clang(*this); break; 213 case Action::PrecompileJobClass: 214 case Action::CompileJobClass: 215 T = new tools::darwin::Compile(*this); break; 216 case Action::AssembleJobClass: { 217 if (UseIntegratedAs) 218 T = new tools::ClangAs(*this); 219 else 220 T = new tools::darwin::Assemble(*this); 221 break; 222 } 223 case Action::LinkJobClass: 224 T = new tools::darwin::Link(*this); break; 225 case Action::LipoJobClass: 226 T = new tools::darwin::Lipo(*this); break; 227 case Action::DsymutilJobClass: 228 T = new tools::darwin::Dsymutil(*this); break; 229 case Action::VerifyJobClass: 230 T = new tools::darwin::VerifyDebug(*this); break; 231 } 232 } 233 234 return *T; 235} 236 237 238DarwinClang::DarwinClang(const Driver &D, const llvm::Triple& Triple) 239 : Darwin(D, Triple) 240{ 241 getProgramPaths().push_back(getDriver().getInstalledDir()); 242 if (getDriver().getInstalledDir() != getDriver().Dir) 243 getProgramPaths().push_back(getDriver().Dir); 244 245 // We expect 'as', 'ld', etc. to be adjacent to our install dir. 246 getProgramPaths().push_back(getDriver().getInstalledDir()); 247 if (getDriver().getInstalledDir() != getDriver().Dir) 248 getProgramPaths().push_back(getDriver().Dir); 249 250 // For fallback, we need to know how to find the GCC cc1 executables, so we 251 // also add the GCC libexec paths. This is legacy code that can be removed 252 // once fallback is no longer useful. 253 AddGCCLibexecPath(DarwinVersion[0]); 254 AddGCCLibexecPath(DarwinVersion[0] - 2); 255 AddGCCLibexecPath(DarwinVersion[0] - 1); 256 AddGCCLibexecPath(DarwinVersion[0] + 1); 257 AddGCCLibexecPath(DarwinVersion[0] + 2); 258} 259 260void DarwinClang::AddGCCLibexecPath(unsigned darwinVersion) { 261 std::string ToolChainDir = "i686-apple-darwin"; 262 ToolChainDir += llvm::utostr(darwinVersion); 263 ToolChainDir += "/4.2.1"; 264 265 std::string Path = getDriver().Dir; 266 Path += "/../llvm-gcc-4.2/libexec/gcc/"; 267 Path += ToolChainDir; 268 getProgramPaths().push_back(Path); 269 270 Path = "/usr/llvm-gcc-4.2/libexec/gcc/"; 271 Path += ToolChainDir; 272 getProgramPaths().push_back(Path); 273} 274 275void DarwinClang::AddLinkARCArgs(const ArgList &Args, 276 ArgStringList &CmdArgs) const { 277 278 CmdArgs.push_back("-force_load"); 279 llvm::sys::Path P(getDriver().ClangExecutable); 280 P.eraseComponent(); // 'clang' 281 P.eraseComponent(); // 'bin' 282 P.appendComponent("lib"); 283 P.appendComponent("arc"); 284 P.appendComponent("libarclite_"); 285 std::string s = P.str(); 286 // Mash in the platform. 287 if (isTargetIOSSimulator()) 288 s += "iphonesimulator"; 289 else if (isTargetIPhoneOS()) 290 s += "iphoneos"; 291 // FIXME: Remove this once we depend fully on -mios-simulator-version-min. 292 else if (TargetSimulatorVersionFromDefines != VersionTuple()) 293 s += "iphonesimulator"; 294 else 295 s += "macosx"; 296 s += ".a"; 297 298 CmdArgs.push_back(Args.MakeArgString(s)); 299} 300 301void DarwinClang::AddLinkRuntimeLib(const ArgList &Args, 302 ArgStringList &CmdArgs, 303 const char *DarwinStaticLib) const { 304 llvm::sys::Path P(getDriver().ResourceDir); 305 P.appendComponent("lib"); 306 P.appendComponent("darwin"); 307 P.appendComponent(DarwinStaticLib); 308 309 // For now, allow missing resource libraries to support developers who may 310 // not have compiler-rt checked out or integrated into their build. 311 bool Exists; 312 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) 313 CmdArgs.push_back(Args.MakeArgString(P.str())); 314} 315 316void DarwinClang::AddLinkRuntimeLibArgs(const ArgList &Args, 317 ArgStringList &CmdArgs) const { 318 // Darwin only supports the compiler-rt based runtime libraries. 319 switch (GetRuntimeLibType(Args)) { 320 case ToolChain::RLT_CompilerRT: 321 break; 322 default: 323 getDriver().Diag(diag::err_drv_unsupported_rtlib_for_platform) 324 << Args.getLastArg(options::OPT_rtlib_EQ)->getValue(Args) << "darwin"; 325 return; 326 } 327 328 // Darwin doesn't support real static executables, don't link any runtime 329 // libraries with -static. 330 if (Args.hasArg(options::OPT_static)) 331 return; 332 333 // Reject -static-libgcc for now, we can deal with this when and if someone 334 // cares. This is useful in situations where someone wants to statically link 335 // something like libstdc++, and needs its runtime support routines. 336 if (const Arg *A = Args.getLastArg(options::OPT_static_libgcc)) { 337 getDriver().Diag(diag::err_drv_unsupported_opt) 338 << A->getAsString(Args); 339 return; 340 } 341 342 // If we are building profile support, link that library in. 343 if (Args.hasArg(options::OPT_fprofile_arcs) || 344 Args.hasArg(options::OPT_fprofile_generate) || 345 Args.hasArg(options::OPT_fcreate_profile) || 346 Args.hasArg(options::OPT_coverage)) { 347 // Select the appropriate runtime library for the target. 348 if (isTargetIPhoneOS()) { 349 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.profile_ios.a"); 350 } else { 351 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.profile_osx.a"); 352 } 353 } 354 355 // Add ASAN runtime library, if required. Dynamic libraries and bundles 356 // should not be linked with the runtime library. 357 if (Args.hasFlag(options::OPT_faddress_sanitizer, 358 options::OPT_fno_address_sanitizer, false)) { 359 if (Args.hasArg(options::OPT_dynamiclib) || 360 Args.hasArg(options::OPT_bundle)) return; 361 if (isTargetIPhoneOS()) { 362 getDriver().Diag(diag::err_drv_clang_unsupported_per_platform) 363 << "-faddress-sanitizer"; 364 } else { 365 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.asan_osx.a"); 366 367 // The ASAN runtime library requires C++ and CoreFoundation. 368 AddCXXStdlibLibArgs(Args, CmdArgs); 369 CmdArgs.push_back("-framework"); 370 CmdArgs.push_back("CoreFoundation"); 371 } 372 } 373 374 // Otherwise link libSystem, then the dynamic runtime library, and finally any 375 // target specific static runtime library. 376 CmdArgs.push_back("-lSystem"); 377 378 // Select the dynamic runtime library and the target specific static library. 379 if (isTargetIPhoneOS()) { 380 // If we are compiling as iOS / simulator, don't attempt to link libgcc_s.1, 381 // it never went into the SDK. 382 // Linking against libgcc_s.1 isn't needed for iOS 5.0+ 383 if (isIPhoneOSVersionLT(5, 0) && !isTargetIOSSimulator()) 384 CmdArgs.push_back("-lgcc_s.1"); 385 386 // We currently always need a static runtime library for iOS. 387 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.ios.a"); 388 } else { 389 // The dynamic runtime library was merged with libSystem for 10.6 and 390 // beyond; only 10.4 and 10.5 need an additional runtime library. 391 if (isMacosxVersionLT(10, 5)) 392 CmdArgs.push_back("-lgcc_s.10.4"); 393 else if (isMacosxVersionLT(10, 6)) 394 CmdArgs.push_back("-lgcc_s.10.5"); 395 396 // For OS X, we thought we would only need a static runtime library when 397 // targeting 10.4, to provide versions of the static functions which were 398 // omitted from 10.4.dylib. 399 // 400 // Unfortunately, that turned out to not be true, because Darwin system 401 // headers can still use eprintf on i386, and it is not exported from 402 // libSystem. Therefore, we still must provide a runtime library just for 403 // the tiny tiny handful of projects that *might* use that symbol. 404 if (isMacosxVersionLT(10, 5)) { 405 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.10.4.a"); 406 } else { 407 if (getTriple().getArch() == llvm::Triple::x86) 408 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.eprintf.a"); 409 AddLinkRuntimeLib(Args, CmdArgs, "libclang_rt.osx.a"); 410 } 411 } 412} 413 414static inline StringRef SimulatorVersionDefineName() { 415 return "__IPHONE_OS_VERSION_MIN_REQUIRED"; 416} 417 418/// \brief Parse the simulator version define: 419/// __IPHONE_OS_VERSION_MIN_REQUIRED=([0-9])([0-9][0-9])([0-9][0-9]) 420// and return the grouped values as integers, e.g: 421// __IPHONE_OS_VERSION_MIN_REQUIRED=40201 422// will return Major=4, Minor=2, Micro=1. 423static bool GetVersionFromSimulatorDefine(StringRef define, 424 unsigned &Major, unsigned &Minor, 425 unsigned &Micro) { 426 assert(define.startswith(SimulatorVersionDefineName())); 427 StringRef name, version; 428 llvm::tie(name, version) = define.split('='); 429 if (version.empty()) 430 return false; 431 std::string verstr = version.str(); 432 char *end; 433 unsigned num = (unsigned) strtol(verstr.c_str(), &end, 10); 434 if (*end != '\0') 435 return false; 436 Major = num / 10000; 437 num = num % 10000; 438 Minor = num / 100; 439 Micro = num % 100; 440 return true; 441} 442 443void Darwin::AddDeploymentTarget(DerivedArgList &Args) const { 444 const OptTable &Opts = getDriver().getOpts(); 445 446 // Support allowing the SDKROOT environment variable used by xcrun and other 447 // Xcode tools to define the default sysroot, by making it the default for 448 // isysroot. 449 if (!Args.hasArg(options::OPT_isysroot)) { 450 if (char *env = ::getenv("SDKROOT")) { 451 // We only use this value as the default if it is an absolute path and 452 // exists. 453 if (llvm::sys::path::is_absolute(env) && llvm::sys::fs::exists(env)) { 454 Args.append(Args.MakeSeparateArg( 455 0, Opts.getOption(options::OPT_isysroot), env)); 456 } 457 } 458 } 459 460 Arg *OSXVersion = Args.getLastArg(options::OPT_mmacosx_version_min_EQ); 461 Arg *iOSVersion = Args.getLastArg(options::OPT_miphoneos_version_min_EQ); 462 Arg *iOSSimVersion = Args.getLastArg( 463 options::OPT_mios_simulator_version_min_EQ); 464 465 // FIXME: HACK! When compiling for the simulator we don't get a 466 // '-miphoneos-version-min' to help us know whether there is an ARC runtime 467 // or not; try to parse a __IPHONE_OS_VERSION_MIN_REQUIRED 468 // define passed in command-line. 469 if (!iOSVersion && !iOSSimVersion) { 470 for (arg_iterator it = Args.filtered_begin(options::OPT_D), 471 ie = Args.filtered_end(); it != ie; ++it) { 472 StringRef define = (*it)->getValue(Args); 473 if (define.startswith(SimulatorVersionDefineName())) { 474 unsigned Major = 0, Minor = 0, Micro = 0; 475 if (GetVersionFromSimulatorDefine(define, Major, Minor, Micro) && 476 Major < 10 && Minor < 100 && Micro < 100) { 477 TargetSimulatorVersionFromDefines = VersionTuple(Major, Minor, Micro); 478 } 479 // When using the define to indicate the simulator, we force 480 // 10.6 macosx target. 481 const Option *O = Opts.getOption(options::OPT_mmacosx_version_min_EQ); 482 OSXVersion = Args.MakeJoinedArg(0, O, "10.6"); 483 Args.append(OSXVersion); 484 break; 485 } 486 } 487 } 488 489 if (OSXVersion && (iOSVersion || iOSSimVersion)) { 490 getDriver().Diag(diag::err_drv_argument_not_allowed_with) 491 << OSXVersion->getAsString(Args) 492 << (iOSVersion ? iOSVersion : iOSSimVersion)->getAsString(Args); 493 iOSVersion = iOSSimVersion = 0; 494 } else if (iOSVersion && iOSSimVersion) { 495 getDriver().Diag(diag::err_drv_argument_not_allowed_with) 496 << iOSVersion->getAsString(Args) 497 << iOSSimVersion->getAsString(Args); 498 iOSSimVersion = 0; 499 } else if (!OSXVersion && !iOSVersion && !iOSSimVersion) { 500 // If no deployment target was specified on the command line, check for 501 // environment defines. 502 StringRef OSXTarget; 503 StringRef iOSTarget; 504 StringRef iOSSimTarget; 505 if (char *env = ::getenv("MACOSX_DEPLOYMENT_TARGET")) 506 OSXTarget = env; 507 if (char *env = ::getenv("IPHONEOS_DEPLOYMENT_TARGET")) 508 iOSTarget = env; 509 if (char *env = ::getenv("IOS_SIMULATOR_DEPLOYMENT_TARGET")) 510 iOSSimTarget = env; 511 512 // If no '-miphoneos-version-min' specified on the command line and 513 // IPHONEOS_DEPLOYMENT_TARGET is not defined, see if we can set the default 514 // based on -isysroot. 515 if (iOSTarget.empty()) { 516 if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) { 517 StringRef first, second; 518 StringRef isysroot = A->getValue(Args); 519 llvm::tie(first, second) = isysroot.split(StringRef("SDKs/iPhoneOS")); 520 if (second != "") 521 iOSTarget = second.substr(0,3); 522 } 523 } 524 525 // If no OSX or iOS target has been specified and we're compiling for armv7, 526 // go ahead as assume we're targeting iOS. 527 if (OSXTarget.empty() && iOSTarget.empty() && 528 getDarwinArchName(Args) == "armv7") 529 iOSTarget = iOSVersionMin; 530 531 // Handle conflicting deployment targets 532 // 533 // FIXME: Don't hardcode default here. 534 535 // Do not allow conflicts with the iOS simulator target. 536 if (!iOSSimTarget.empty() && (!OSXTarget.empty() || !iOSTarget.empty())) { 537 getDriver().Diag(diag::err_drv_conflicting_deployment_targets) 538 << "IOS_SIMULATOR_DEPLOYMENT_TARGET" 539 << (!OSXTarget.empty() ? "MACOSX_DEPLOYMENT_TARGET" : 540 "IPHONEOS_DEPLOYMENT_TARGET"); 541 } 542 543 // Allow conflicts among OSX and iOS for historical reasons, but choose the 544 // default platform. 545 if (!OSXTarget.empty() && !iOSTarget.empty()) { 546 if (getTriple().getArch() == llvm::Triple::arm || 547 getTriple().getArch() == llvm::Triple::thumb) 548 OSXTarget = ""; 549 else 550 iOSTarget = ""; 551 } 552 553 if (!OSXTarget.empty()) { 554 const Option *O = Opts.getOption(options::OPT_mmacosx_version_min_EQ); 555 OSXVersion = Args.MakeJoinedArg(0, O, OSXTarget); 556 Args.append(OSXVersion); 557 } else if (!iOSTarget.empty()) { 558 const Option *O = Opts.getOption(options::OPT_miphoneos_version_min_EQ); 559 iOSVersion = Args.MakeJoinedArg(0, O, iOSTarget); 560 Args.append(iOSVersion); 561 } else if (!iOSSimTarget.empty()) { 562 const Option *O = Opts.getOption( 563 options::OPT_mios_simulator_version_min_EQ); 564 iOSSimVersion = Args.MakeJoinedArg(0, O, iOSSimTarget); 565 Args.append(iOSSimVersion); 566 } else { 567 // Otherwise, assume we are targeting OS X. 568 const Option *O = Opts.getOption(options::OPT_mmacosx_version_min_EQ); 569 OSXVersion = Args.MakeJoinedArg(0, O, MacosxVersionMin); 570 Args.append(OSXVersion); 571 } 572 } 573 574 // Reject invalid architecture combinations. 575 if (iOSSimVersion && (getTriple().getArch() != llvm::Triple::x86 && 576 getTriple().getArch() != llvm::Triple::x86_64)) { 577 getDriver().Diag(diag::err_drv_invalid_arch_for_deployment_target) 578 << getTriple().getArchName() << iOSSimVersion->getAsString(Args); 579 } 580 581 // Set the tool chain target information. 582 unsigned Major, Minor, Micro; 583 bool HadExtra; 584 if (OSXVersion) { 585 assert((!iOSVersion && !iOSSimVersion) && "Unknown target platform!"); 586 if (!Driver::GetReleaseVersion(OSXVersion->getValue(Args), Major, Minor, 587 Micro, HadExtra) || HadExtra || 588 Major != 10 || Minor >= 100 || Micro >= 100) 589 getDriver().Diag(diag::err_drv_invalid_version_number) 590 << OSXVersion->getAsString(Args); 591 } else { 592 const Arg *Version = iOSVersion ? iOSVersion : iOSSimVersion; 593 assert(Version && "Unknown target platform!"); 594 if (!Driver::GetReleaseVersion(Version->getValue(Args), Major, Minor, 595 Micro, HadExtra) || HadExtra || 596 Major >= 10 || Minor >= 100 || Micro >= 100) 597 getDriver().Diag(diag::err_drv_invalid_version_number) 598 << Version->getAsString(Args); 599 } 600 601 bool IsIOSSim = bool(iOSSimVersion); 602 603 // In GCC, the simulator historically was treated as being OS X in some 604 // contexts, like determining the link logic, despite generally being called 605 // with an iOS deployment target. For compatibility, we detect the 606 // simulator as iOS + x86, and treat it differently in a few contexts. 607 if (iOSVersion && (getTriple().getArch() == llvm::Triple::x86 || 608 getTriple().getArch() == llvm::Triple::x86_64)) 609 IsIOSSim = true; 610 611 setTarget(/*IsIPhoneOS=*/ !OSXVersion, Major, Minor, Micro, IsIOSSim); 612} 613 614void DarwinClang::AddCXXStdlibLibArgs(const ArgList &Args, 615 ArgStringList &CmdArgs) const { 616 CXXStdlibType Type = GetCXXStdlibType(Args); 617 618 switch (Type) { 619 case ToolChain::CST_Libcxx: 620 CmdArgs.push_back("-lc++"); 621 break; 622 623 case ToolChain::CST_Libstdcxx: { 624 // Unfortunately, -lstdc++ doesn't always exist in the standard search path; 625 // it was previously found in the gcc lib dir. However, for all the Darwin 626 // platforms we care about it was -lstdc++.6, so we search for that 627 // explicitly if we can't see an obvious -lstdc++ candidate. 628 629 // Check in the sysroot first. 630 bool Exists; 631 if (const Arg *A = Args.getLastArg(options::OPT_isysroot)) { 632 llvm::sys::Path P(A->getValue(Args)); 633 P.appendComponent("usr"); 634 P.appendComponent("lib"); 635 P.appendComponent("libstdc++.dylib"); 636 637 if (llvm::sys::fs::exists(P.str(), Exists) || !Exists) { 638 P.eraseComponent(); 639 P.appendComponent("libstdc++.6.dylib"); 640 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) { 641 CmdArgs.push_back(Args.MakeArgString(P.str())); 642 return; 643 } 644 } 645 } 646 647 // Otherwise, look in the root. 648 // FIXME: This should be removed someday when we don't have to care about 649 // 10.6 and earlier, where /usr/lib/libstdc++.dylib does not exist. 650 if ((llvm::sys::fs::exists("/usr/lib/libstdc++.dylib", Exists) || !Exists)&& 651 (!llvm::sys::fs::exists("/usr/lib/libstdc++.6.dylib", Exists) && Exists)){ 652 CmdArgs.push_back("/usr/lib/libstdc++.6.dylib"); 653 return; 654 } 655 656 // Otherwise, let the linker search. 657 CmdArgs.push_back("-lstdc++"); 658 break; 659 } 660 } 661} 662 663void DarwinClang::AddCCKextLibArgs(const ArgList &Args, 664 ArgStringList &CmdArgs) const { 665 666 // For Darwin platforms, use the compiler-rt-based support library 667 // instead of the gcc-provided one (which is also incidentally 668 // only present in the gcc lib dir, which makes it hard to find). 669 670 llvm::sys::Path P(getDriver().ResourceDir); 671 P.appendComponent("lib"); 672 P.appendComponent("darwin"); 673 P.appendComponent("libclang_rt.cc_kext.a"); 674 675 // For now, allow missing resource libraries to support developers who may 676 // not have compiler-rt checked out or integrated into their build. 677 bool Exists; 678 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) 679 CmdArgs.push_back(Args.MakeArgString(P.str())); 680} 681 682DerivedArgList *Darwin::TranslateArgs(const DerivedArgList &Args, 683 const char *BoundArch) const { 684 DerivedArgList *DAL = new DerivedArgList(Args.getBaseArgs()); 685 const OptTable &Opts = getDriver().getOpts(); 686 687 // FIXME: We really want to get out of the tool chain level argument 688 // translation business, as it makes the driver functionality much 689 // more opaque. For now, we follow gcc closely solely for the 690 // purpose of easily achieving feature parity & testability. Once we 691 // have something that works, we should reevaluate each translation 692 // and try to push it down into tool specific logic. 693 694 for (ArgList::const_iterator it = Args.begin(), 695 ie = Args.end(); it != ie; ++it) { 696 Arg *A = *it; 697 698 if (A->getOption().matches(options::OPT_Xarch__)) { 699 // Skip this argument unless the architecture matches either the toolchain 700 // triple arch, or the arch being bound. 701 // 702 // FIXME: Canonicalize name. 703 StringRef XarchArch = A->getValue(Args, 0); 704 if (!(XarchArch == getArchName() || 705 (BoundArch && XarchArch == BoundArch))) 706 continue; 707 708 Arg *OriginalArg = A; 709 unsigned Index = Args.getBaseArgs().MakeIndex(A->getValue(Args, 1)); 710 unsigned Prev = Index; 711 Arg *XarchArg = Opts.ParseOneArg(Args, Index); 712 713 // If the argument parsing failed or more than one argument was 714 // consumed, the -Xarch_ argument's parameter tried to consume 715 // extra arguments. Emit an error and ignore. 716 // 717 // We also want to disallow any options which would alter the 718 // driver behavior; that isn't going to work in our model. We 719 // use isDriverOption() as an approximation, although things 720 // like -O4 are going to slip through. 721 if (!XarchArg || Index > Prev + 1) { 722 getDriver().Diag(diag::err_drv_invalid_Xarch_argument_with_args) 723 << A->getAsString(Args); 724 continue; 725 } else if (XarchArg->getOption().isDriverOption()) { 726 getDriver().Diag(diag::err_drv_invalid_Xarch_argument_isdriver) 727 << A->getAsString(Args); 728 continue; 729 } 730 731 XarchArg->setBaseArg(A); 732 A = XarchArg; 733 734 DAL->AddSynthesizedArg(A); 735 736 // Linker input arguments require custom handling. The problem is that we 737 // have already constructed the phase actions, so we can not treat them as 738 // "input arguments". 739 if (A->getOption().isLinkerInput()) { 740 // Convert the argument into individual Zlinker_input_args. 741 for (unsigned i = 0, e = A->getNumValues(); i != e; ++i) { 742 DAL->AddSeparateArg(OriginalArg, 743 Opts.getOption(options::OPT_Zlinker_input), 744 A->getValue(Args, i)); 745 746 } 747 continue; 748 } 749 } 750 751 // Sob. These is strictly gcc compatible for the time being. Apple 752 // gcc translates options twice, which means that self-expanding 753 // options add duplicates. 754 switch ((options::ID) A->getOption().getID()) { 755 default: 756 DAL->append(A); 757 break; 758 759 case options::OPT_mkernel: 760 case options::OPT_fapple_kext: 761 DAL->append(A); 762 DAL->AddFlagArg(A, Opts.getOption(options::OPT_static)); 763 break; 764 765 case options::OPT_dependency_file: 766 DAL->AddSeparateArg(A, Opts.getOption(options::OPT_MF), 767 A->getValue(Args)); 768 break; 769 770 case options::OPT_gfull: 771 DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag)); 772 DAL->AddFlagArg(A, 773 Opts.getOption(options::OPT_fno_eliminate_unused_debug_symbols)); 774 break; 775 776 case options::OPT_gused: 777 DAL->AddFlagArg(A, Opts.getOption(options::OPT_g_Flag)); 778 DAL->AddFlagArg(A, 779 Opts.getOption(options::OPT_feliminate_unused_debug_symbols)); 780 break; 781 782 case options::OPT_shared: 783 DAL->AddFlagArg(A, Opts.getOption(options::OPT_dynamiclib)); 784 break; 785 786 case options::OPT_fconstant_cfstrings: 787 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mconstant_cfstrings)); 788 break; 789 790 case options::OPT_fno_constant_cfstrings: 791 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_constant_cfstrings)); 792 break; 793 794 case options::OPT_Wnonportable_cfstrings: 795 DAL->AddFlagArg(A, 796 Opts.getOption(options::OPT_mwarn_nonportable_cfstrings)); 797 break; 798 799 case options::OPT_Wno_nonportable_cfstrings: 800 DAL->AddFlagArg(A, 801 Opts.getOption(options::OPT_mno_warn_nonportable_cfstrings)); 802 break; 803 804 case options::OPT_fpascal_strings: 805 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mpascal_strings)); 806 break; 807 808 case options::OPT_fno_pascal_strings: 809 DAL->AddFlagArg(A, Opts.getOption(options::OPT_mno_pascal_strings)); 810 break; 811 } 812 } 813 814 if (getTriple().getArch() == llvm::Triple::x86 || 815 getTriple().getArch() == llvm::Triple::x86_64) 816 if (!Args.hasArgNoClaim(options::OPT_mtune_EQ)) 817 DAL->AddJoinedArg(0, Opts.getOption(options::OPT_mtune_EQ), "core2"); 818 819 // Add the arch options based on the particular spelling of -arch, to match 820 // how the driver driver works. 821 if (BoundArch) { 822 StringRef Name = BoundArch; 823 const Option *MCpu = Opts.getOption(options::OPT_mcpu_EQ); 824 const Option *MArch = Opts.getOption(options::OPT_march_EQ); 825 826 // This code must be kept in sync with LLVM's getArchTypeForDarwinArch, 827 // which defines the list of which architectures we accept. 828 if (Name == "ppc") 829 ; 830 else if (Name == "ppc601") 831 DAL->AddJoinedArg(0, MCpu, "601"); 832 else if (Name == "ppc603") 833 DAL->AddJoinedArg(0, MCpu, "603"); 834 else if (Name == "ppc604") 835 DAL->AddJoinedArg(0, MCpu, "604"); 836 else if (Name == "ppc604e") 837 DAL->AddJoinedArg(0, MCpu, "604e"); 838 else if (Name == "ppc750") 839 DAL->AddJoinedArg(0, MCpu, "750"); 840 else if (Name == "ppc7400") 841 DAL->AddJoinedArg(0, MCpu, "7400"); 842 else if (Name == "ppc7450") 843 DAL->AddJoinedArg(0, MCpu, "7450"); 844 else if (Name == "ppc970") 845 DAL->AddJoinedArg(0, MCpu, "970"); 846 847 else if (Name == "ppc64") 848 DAL->AddFlagArg(0, Opts.getOption(options::OPT_m64)); 849 850 else if (Name == "i386") 851 ; 852 else if (Name == "i486") 853 DAL->AddJoinedArg(0, MArch, "i486"); 854 else if (Name == "i586") 855 DAL->AddJoinedArg(0, MArch, "i586"); 856 else if (Name == "i686") 857 DAL->AddJoinedArg(0, MArch, "i686"); 858 else if (Name == "pentium") 859 DAL->AddJoinedArg(0, MArch, "pentium"); 860 else if (Name == "pentium2") 861 DAL->AddJoinedArg(0, MArch, "pentium2"); 862 else if (Name == "pentpro") 863 DAL->AddJoinedArg(0, MArch, "pentiumpro"); 864 else if (Name == "pentIIm3") 865 DAL->AddJoinedArg(0, MArch, "pentium2"); 866 867 else if (Name == "x86_64") 868 DAL->AddFlagArg(0, Opts.getOption(options::OPT_m64)); 869 870 else if (Name == "arm") 871 DAL->AddJoinedArg(0, MArch, "armv4t"); 872 else if (Name == "armv4t") 873 DAL->AddJoinedArg(0, MArch, "armv4t"); 874 else if (Name == "armv5") 875 DAL->AddJoinedArg(0, MArch, "armv5tej"); 876 else if (Name == "xscale") 877 DAL->AddJoinedArg(0, MArch, "xscale"); 878 else if (Name == "armv6") 879 DAL->AddJoinedArg(0, MArch, "armv6k"); 880 else if (Name == "armv7") 881 DAL->AddJoinedArg(0, MArch, "armv7a"); 882 883 else 884 llvm_unreachable("invalid Darwin arch"); 885 } 886 887 // Add an explicit version min argument for the deployment target. We do this 888 // after argument translation because -Xarch_ arguments may add a version min 889 // argument. 890 if (BoundArch) 891 AddDeploymentTarget(*DAL); 892 893 // Validate the C++ standard library choice. 894 CXXStdlibType Type = GetCXXStdlibType(*DAL); 895 if (Type == ToolChain::CST_Libcxx) { 896 // Check whether the target provides libc++. 897 StringRef where; 898 899 // Complain about targetting iOS < 5.0 in any way. 900 if (TargetSimulatorVersionFromDefines != VersionTuple()) { 901 if (TargetSimulatorVersionFromDefines < VersionTuple(5, 0)) 902 where = "iOS 5.0"; 903 } else if (isTargetIPhoneOS()) { 904 if (isIPhoneOSVersionLT(5, 0)) 905 where = "iOS 5.0"; 906 } 907 908 if (where != StringRef()) { 909 getDriver().Diag(clang::diag::err_drv_invalid_libcxx_deployment) 910 << where; 911 } 912 } 913 914 return DAL; 915} 916 917bool Darwin::IsUnwindTablesDefault() const { 918 // FIXME: Gross; we should probably have some separate target 919 // definition, possibly even reusing the one in clang. 920 return getArchName() == "x86_64"; 921} 922 923bool Darwin::UseDwarfDebugFlags() const { 924 if (const char *S = ::getenv("RC_DEBUG_OPTIONS")) 925 return S[0] != '\0'; 926 return false; 927} 928 929bool Darwin::UseSjLjExceptions() const { 930 // Darwin uses SjLj exceptions on ARM. 931 return (getTriple().getArch() == llvm::Triple::arm || 932 getTriple().getArch() == llvm::Triple::thumb); 933} 934 935const char *Darwin::GetDefaultRelocationModel() const { 936 return "pic"; 937} 938 939const char *Darwin::GetForcedPicModel() const { 940 if (getArchName() == "x86_64") 941 return "pic"; 942 return 0; 943} 944 945bool Darwin::SupportsProfiling() const { 946 // Profiling instrumentation is only supported on x86. 947 return getArchName() == "i386" || getArchName() == "x86_64"; 948} 949 950bool Darwin::SupportsObjCGC() const { 951 // Garbage collection is supported everywhere except on iPhone OS. 952 return !isTargetIPhoneOS(); 953} 954 955void Darwin::CheckObjCARC() const { 956 if (isTargetIPhoneOS() || !isMacosxVersionLT(10, 6)) 957 return; 958 getDriver().Diag(diag::err_arc_unsupported_on_toolchain); 959} 960 961std::string 962Darwin_Generic_GCC::ComputeEffectiveClangTriple(const ArgList &Args, 963 types::ID InputType) const { 964 return ComputeLLVMTriple(Args, InputType); 965} 966 967/// Generic_GCC - A tool chain using the 'gcc' command to perform 968/// all subcommands; this relies on gcc translating the majority of 969/// command line options. 970 971/// \brief Parse a GCCVersion object out of a string of text. 972/// 973/// This is the primary means of forming GCCVersion objects. 974/*static*/ 975Generic_GCC::GCCVersion Linux::GCCVersion::Parse(StringRef VersionText) { 976 const GCCVersion BadVersion = { VersionText.str(), -1, -1, -1, "" }; 977 std::pair<StringRef, StringRef> First = VersionText.split('.'); 978 std::pair<StringRef, StringRef> Second = First.second.split('.'); 979 980 GCCVersion GoodVersion = { VersionText.str(), -1, -1, -1, "" }; 981 if (First.first.getAsInteger(10, GoodVersion.Major) || 982 GoodVersion.Major < 0) 983 return BadVersion; 984 if (Second.first.getAsInteger(10, GoodVersion.Minor) || 985 GoodVersion.Minor < 0) 986 return BadVersion; 987 988 // First look for a number prefix and parse that if present. Otherwise just 989 // stash the entire patch string in the suffix, and leave the number 990 // unspecified. This covers versions strings such as: 991 // 4.4 992 // 4.4.0 993 // 4.4.x 994 // 4.4.2-rc4 995 // 4.4.x-patched 996 // And retains any patch number it finds. 997 StringRef PatchText = GoodVersion.PatchSuffix = Second.second.str(); 998 if (!PatchText.empty()) { 999 if (unsigned EndNumber = PatchText.find_first_not_of("0123456789")) { 1000 // Try to parse the number and any suffix. 1001 if (PatchText.slice(0, EndNumber).getAsInteger(10, GoodVersion.Patch) || 1002 GoodVersion.Patch < 0) 1003 return BadVersion; 1004 GoodVersion.PatchSuffix = PatchText.substr(EndNumber).str(); 1005 } 1006 } 1007 1008 return GoodVersion; 1009} 1010 1011/// \brief Less-than for GCCVersion, implementing a Strict Weak Ordering. 1012bool Generic_GCC::GCCVersion::operator<(const GCCVersion &RHS) const { 1013 if (Major < RHS.Major) return true; if (Major > RHS.Major) return false; 1014 if (Minor < RHS.Minor) return true; if (Minor > RHS.Minor) return false; 1015 1016 // Note that we rank versions with *no* patch specified is better than ones 1017 // hard-coding a patch version. Thus if the RHS has no patch, it always 1018 // wins, and the LHS only wins if it has no patch and the RHS does have 1019 // a patch. 1020 if (RHS.Patch == -1) return true; if (Patch == -1) return false; 1021 if (Patch < RHS.Patch) return true; if (Patch > RHS.Patch) return false; 1022 if (PatchSuffix == RHS.PatchSuffix) return false; 1023 1024 // Finally, between completely tied version numbers, the version with the 1025 // suffix loses as we prefer full releases. 1026 if (RHS.PatchSuffix.empty()) return true; 1027 return false; 1028} 1029 1030static StringRef getGCCToolchainDir(const ArgList &Args) { 1031 const Arg *A = Args.getLastArg(options::OPT_gcc_toolchain); 1032 if (A) 1033 return A->getValue(Args); 1034 return GCC_INSTALL_PREFIX; 1035} 1036 1037/// \brief Construct a GCCInstallationDetector from the driver. 1038/// 1039/// This performs all of the autodetection and sets up the various paths. 1040/// Once constructed, a GCCInstallationDetector is essentially immutable. 1041/// 1042/// FIXME: We shouldn't need an explicit TargetTriple parameter here, and 1043/// should instead pull the target out of the driver. This is currently 1044/// necessary because the driver doesn't store the final version of the target 1045/// triple. 1046Generic_GCC::GCCInstallationDetector::GCCInstallationDetector( 1047 const Driver &D, 1048 const llvm::Triple &TargetTriple, 1049 const ArgList &Args) 1050 : IsValid(false) { 1051 llvm::Triple MultiarchTriple 1052 = TargetTriple.isArch32Bit() ? TargetTriple.get64BitArchVariant() 1053 : TargetTriple.get32BitArchVariant(); 1054 llvm::Triple::ArchType TargetArch = TargetTriple.getArch(); 1055 // The library directories which may contain GCC installations. 1056 SmallVector<StringRef, 4> CandidateLibDirs, CandidateMultiarchLibDirs; 1057 // The compatible GCC triples for this particular architecture. 1058 SmallVector<StringRef, 10> CandidateTripleAliases; 1059 SmallVector<StringRef, 10> CandidateMultiarchTripleAliases; 1060 CollectLibDirsAndTriples(TargetTriple, MultiarchTriple, CandidateLibDirs, 1061 CandidateTripleAliases, 1062 CandidateMultiarchLibDirs, 1063 CandidateMultiarchTripleAliases); 1064 1065 // Compute the set of prefixes for our search. 1066 SmallVector<std::string, 8> Prefixes(D.PrefixDirs.begin(), 1067 D.PrefixDirs.end()); 1068 1069 StringRef GCCToolchainDir = getGCCToolchainDir(Args); 1070 if (GCCToolchainDir != "") { 1071 if (GCCToolchainDir.back() == '/') 1072 GCCToolchainDir = GCCToolchainDir.drop_back(); // remove the / 1073 1074 Prefixes.push_back(GCCToolchainDir); 1075 } else { 1076 Prefixes.push_back(D.SysRoot); 1077 Prefixes.push_back(D.SysRoot + "/usr"); 1078 Prefixes.push_back(D.InstalledDir + "/.."); 1079 } 1080 1081 // Loop over the various components which exist and select the best GCC 1082 // installation available. GCC installs are ranked by version number. 1083 Version = GCCVersion::Parse("0.0.0"); 1084 for (unsigned i = 0, ie = Prefixes.size(); i < ie; ++i) { 1085 if (!llvm::sys::fs::exists(Prefixes[i])) 1086 continue; 1087 for (unsigned j = 0, je = CandidateLibDirs.size(); j < je; ++j) { 1088 const std::string LibDir = Prefixes[i] + CandidateLibDirs[j].str(); 1089 if (!llvm::sys::fs::exists(LibDir)) 1090 continue; 1091 for (unsigned k = 0, ke = CandidateTripleAliases.size(); k < ke; ++k) 1092 ScanLibDirForGCCTriple(TargetArch, LibDir, CandidateTripleAliases[k]); 1093 } 1094 for (unsigned j = 0, je = CandidateMultiarchLibDirs.size(); j < je; ++j) { 1095 const std::string LibDir 1096 = Prefixes[i] + CandidateMultiarchLibDirs[j].str(); 1097 if (!llvm::sys::fs::exists(LibDir)) 1098 continue; 1099 for (unsigned k = 0, ke = CandidateMultiarchTripleAliases.size(); k < ke; 1100 ++k) 1101 ScanLibDirForGCCTriple(TargetArch, LibDir, 1102 CandidateMultiarchTripleAliases[k], 1103 /*NeedsMultiarchSuffix=*/true); 1104 } 1105 } 1106} 1107 1108/*static*/ void Generic_GCC::GCCInstallationDetector::CollectLibDirsAndTriples( 1109 const llvm::Triple &TargetTriple, 1110 const llvm::Triple &MultiarchTriple, 1111 SmallVectorImpl<StringRef> &LibDirs, 1112 SmallVectorImpl<StringRef> &TripleAliases, 1113 SmallVectorImpl<StringRef> &MultiarchLibDirs, 1114 SmallVectorImpl<StringRef> &MultiarchTripleAliases) { 1115 // Declare a bunch of static data sets that we'll select between below. These 1116 // are specifically designed to always refer to string literals to avoid any 1117 // lifetime or initialization issues. 1118 static const char *const ARMLibDirs[] = { "/lib" }; 1119 static const char *const ARMTriples[] = { 1120 "arm-linux-gnueabi", 1121 "arm-linux-androideabi" 1122 }; 1123 static const char *const ARMHFTriples[] = { 1124 "arm-linux-gnueabihf", 1125 }; 1126 1127 static const char *const X86_64LibDirs[] = { "/lib64", "/lib" }; 1128 static const char *const X86_64Triples[] = { 1129 "x86_64-linux-gnu", 1130 "x86_64-unknown-linux-gnu", 1131 "x86_64-pc-linux-gnu", 1132 "x86_64-redhat-linux6E", 1133 "x86_64-redhat-linux", 1134 "x86_64-suse-linux", 1135 "x86_64-manbo-linux-gnu", 1136 "x86_64-linux-gnu", 1137 "x86_64-slackware-linux" 1138 }; 1139 static const char *const X86LibDirs[] = { "/lib32", "/lib" }; 1140 static const char *const X86Triples[] = { 1141 "i686-linux-gnu", 1142 "i686-pc-linux-gnu", 1143 "i486-linux-gnu", 1144 "i386-linux-gnu", 1145 "i686-redhat-linux", 1146 "i586-redhat-linux", 1147 "i386-redhat-linux", 1148 "i586-suse-linux", 1149 "i486-slackware-linux", 1150 "i686-montavista-linux" 1151 }; 1152 1153 static const char *const MIPSLibDirs[] = { "/lib" }; 1154 static const char *const MIPSTriples[] = { "mips-linux-gnu" }; 1155 static const char *const MIPSELLibDirs[] = { "/lib" }; 1156 static const char *const MIPSELTriples[] = { "mipsel-linux-gnu" }; 1157 1158 static const char *const MIPS64LibDirs[] = { "/lib64", "/lib" }; 1159 static const char *const MIPS64Triples[] = { "mips64-linux-gnu" }; 1160 static const char *const MIPS64ELLibDirs[] = { "/lib64", "/lib" }; 1161 static const char *const MIPS64ELTriples[] = { "mips64el-linux-gnu" }; 1162 1163 static const char *const PPCLibDirs[] = { "/lib32", "/lib" }; 1164 static const char *const PPCTriples[] = { 1165 "powerpc-linux-gnu", 1166 "powerpc-unknown-linux-gnu", 1167 "powerpc-suse-linux", 1168 "powerpc-montavista-linuxspe" 1169 }; 1170 static const char *const PPC64LibDirs[] = { "/lib64", "/lib" }; 1171 static const char *const PPC64Triples[] = { 1172 "powerpc64-linux-gnu", 1173 "powerpc64-unknown-linux-gnu", 1174 "powerpc64-suse-linux", 1175 "ppc64-redhat-linux" 1176 }; 1177 1178 switch (TargetTriple.getArch()) { 1179 case llvm::Triple::arm: 1180 case llvm::Triple::thumb: 1181 LibDirs.append(ARMLibDirs, ARMLibDirs + llvm::array_lengthof(ARMLibDirs)); 1182 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 1183 TripleAliases.append( 1184 ARMHFTriples, ARMHFTriples + llvm::array_lengthof(ARMHFTriples)); 1185 } else { 1186 TripleAliases.append( 1187 ARMTriples, ARMTriples + llvm::array_lengthof(ARMTriples)); 1188 } 1189 break; 1190 case llvm::Triple::x86_64: 1191 LibDirs.append( 1192 X86_64LibDirs, X86_64LibDirs + llvm::array_lengthof(X86_64LibDirs)); 1193 TripleAliases.append( 1194 X86_64Triples, X86_64Triples + llvm::array_lengthof(X86_64Triples)); 1195 MultiarchLibDirs.append( 1196 X86LibDirs, X86LibDirs + llvm::array_lengthof(X86LibDirs)); 1197 MultiarchTripleAliases.append( 1198 X86Triples, X86Triples + llvm::array_lengthof(X86Triples)); 1199 break; 1200 case llvm::Triple::x86: 1201 LibDirs.append(X86LibDirs, X86LibDirs + llvm::array_lengthof(X86LibDirs)); 1202 TripleAliases.append( 1203 X86Triples, X86Triples + llvm::array_lengthof(X86Triples)); 1204 MultiarchLibDirs.append( 1205 X86_64LibDirs, X86_64LibDirs + llvm::array_lengthof(X86_64LibDirs)); 1206 MultiarchTripleAliases.append( 1207 X86_64Triples, X86_64Triples + llvm::array_lengthof(X86_64Triples)); 1208 break; 1209 case llvm::Triple::mips: 1210 LibDirs.append( 1211 MIPSLibDirs, MIPSLibDirs + llvm::array_lengthof(MIPSLibDirs)); 1212 TripleAliases.append( 1213 MIPSTriples, MIPSTriples + llvm::array_lengthof(MIPSTriples)); 1214 MultiarchLibDirs.append( 1215 MIPS64LibDirs, MIPS64LibDirs + llvm::array_lengthof(MIPS64LibDirs)); 1216 MultiarchTripleAliases.append( 1217 MIPS64Triples, MIPS64Triples + llvm::array_lengthof(MIPS64Triples)); 1218 break; 1219 case llvm::Triple::mipsel: 1220 LibDirs.append( 1221 MIPSELLibDirs, MIPSELLibDirs + llvm::array_lengthof(MIPSELLibDirs)); 1222 TripleAliases.append( 1223 MIPSELTriples, MIPSELTriples + llvm::array_lengthof(MIPSELTriples)); 1224 MultiarchLibDirs.append( 1225 MIPS64ELLibDirs, MIPS64ELLibDirs + llvm::array_lengthof(MIPS64ELLibDirs)); 1226 MultiarchTripleAliases.append( 1227 MIPS64ELTriples, MIPS64ELTriples + llvm::array_lengthof(MIPS64ELTriples)); 1228 break; 1229 case llvm::Triple::mips64: 1230 LibDirs.append( 1231 MIPS64LibDirs, MIPS64LibDirs + llvm::array_lengthof(MIPS64LibDirs)); 1232 TripleAliases.append( 1233 MIPS64Triples, MIPS64Triples + llvm::array_lengthof(MIPS64Triples)); 1234 MultiarchLibDirs.append( 1235 MIPSLibDirs, MIPSLibDirs + llvm::array_lengthof(MIPSLibDirs)); 1236 MultiarchTripleAliases.append( 1237 MIPSTriples, MIPSTriples + llvm::array_lengthof(MIPSTriples)); 1238 break; 1239 case llvm::Triple::mips64el: 1240 LibDirs.append( 1241 MIPS64ELLibDirs, MIPS64ELLibDirs + llvm::array_lengthof(MIPS64ELLibDirs)); 1242 TripleAliases.append( 1243 MIPS64ELTriples, MIPS64ELTriples + llvm::array_lengthof(MIPS64ELTriples)); 1244 MultiarchLibDirs.append( 1245 MIPSELLibDirs, MIPSELLibDirs + llvm::array_lengthof(MIPSELLibDirs)); 1246 MultiarchTripleAliases.append( 1247 MIPSELTriples, MIPSELTriples + llvm::array_lengthof(MIPSELTriples)); 1248 break; 1249 case llvm::Triple::ppc: 1250 LibDirs.append(PPCLibDirs, PPCLibDirs + llvm::array_lengthof(PPCLibDirs)); 1251 TripleAliases.append( 1252 PPCTriples, PPCTriples + llvm::array_lengthof(PPCTriples)); 1253 MultiarchLibDirs.append( 1254 PPC64LibDirs, PPC64LibDirs + llvm::array_lengthof(PPC64LibDirs)); 1255 MultiarchTripleAliases.append( 1256 PPC64Triples, PPC64Triples + llvm::array_lengthof(PPC64Triples)); 1257 break; 1258 case llvm::Triple::ppc64: 1259 LibDirs.append( 1260 PPC64LibDirs, PPC64LibDirs + llvm::array_lengthof(PPC64LibDirs)); 1261 TripleAliases.append( 1262 PPC64Triples, PPC64Triples + llvm::array_lengthof(PPC64Triples)); 1263 MultiarchLibDirs.append( 1264 PPCLibDirs, PPCLibDirs + llvm::array_lengthof(PPCLibDirs)); 1265 MultiarchTripleAliases.append( 1266 PPCTriples, PPCTriples + llvm::array_lengthof(PPCTriples)); 1267 break; 1268 1269 default: 1270 // By default, just rely on the standard lib directories and the original 1271 // triple. 1272 break; 1273 } 1274 1275 // Always append the drivers target triple to the end, in case it doesn't 1276 // match any of our aliases. 1277 TripleAliases.push_back(TargetTriple.str()); 1278 1279 // Also include the multiarch variant if it's different. 1280 if (TargetTriple.str() != MultiarchTriple.str()) 1281 MultiarchTripleAliases.push_back(MultiarchTriple.str()); 1282} 1283 1284void Generic_GCC::GCCInstallationDetector::ScanLibDirForGCCTriple( 1285 llvm::Triple::ArchType TargetArch, const std::string &LibDir, 1286 StringRef CandidateTriple, bool NeedsMultiarchSuffix) { 1287 // There are various different suffixes involving the triple we 1288 // check for. We also record what is necessary to walk from each back 1289 // up to the lib directory. 1290 const std::string LibSuffixes[] = { 1291 "/gcc/" + CandidateTriple.str(), 1292 "/" + CandidateTriple.str() + "/gcc/" + CandidateTriple.str(), 1293 1294 // The Freescale PPC SDK has the gcc libraries in 1295 // <sysroot>/usr/lib/<triple>/x.y.z so have a look there as well. 1296 "/" + CandidateTriple.str(), 1297 1298 // Ubuntu has a strange mis-matched pair of triples that this happens to 1299 // match. 1300 // FIXME: It may be worthwhile to generalize this and look for a second 1301 // triple. 1302 "/i386-linux-gnu/gcc/" + CandidateTriple.str() 1303 }; 1304 const std::string InstallSuffixes[] = { 1305 "/../../..", 1306 "/../../../..", 1307 "/../..", 1308 "/../../../.." 1309 }; 1310 // Only look at the final, weird Ubuntu suffix for i386-linux-gnu. 1311 const unsigned NumLibSuffixes = (llvm::array_lengthof(LibSuffixes) - 1312 (TargetArch != llvm::Triple::x86)); 1313 for (unsigned i = 0; i < NumLibSuffixes; ++i) { 1314 StringRef LibSuffix = LibSuffixes[i]; 1315 llvm::error_code EC; 1316 for (llvm::sys::fs::directory_iterator LI(LibDir + LibSuffix, EC), LE; 1317 !EC && LI != LE; LI = LI.increment(EC)) { 1318 StringRef VersionText = llvm::sys::path::filename(LI->path()); 1319 GCCVersion CandidateVersion = GCCVersion::Parse(VersionText); 1320 static const GCCVersion MinVersion = { "4.1.1", 4, 1, 1, "" }; 1321 if (CandidateVersion < MinVersion) 1322 continue; 1323 if (CandidateVersion <= Version) 1324 continue; 1325 1326 // Some versions of SUSE and Fedora on ppc64 put 32-bit libs 1327 // in what would normally be GCCInstallPath and put the 64-bit 1328 // libs in a subdirectory named 64. The simple logic we follow is that 1329 // *if* there is a subdirectory of the right name with crtbegin.o in it, 1330 // we use that. If not, and if not a multiarch triple, we look for 1331 // crtbegin.o without the subdirectory. 1332 StringRef MultiarchSuffix 1333 = (TargetArch == llvm::Triple::x86_64 || 1334 TargetArch == llvm::Triple::ppc64 || 1335 TargetArch == llvm::Triple::mips64 || 1336 TargetArch == llvm::Triple::mips64el) ? "/64" : "/32"; 1337 if (llvm::sys::fs::exists(LI->path() + MultiarchSuffix + "/crtbegin.o")) { 1338 GCCMultiarchSuffix = MultiarchSuffix.str(); 1339 } else { 1340 if (NeedsMultiarchSuffix || 1341 !llvm::sys::fs::exists(LI->path() + "/crtbegin.o")) 1342 continue; 1343 GCCMultiarchSuffix.clear(); 1344 } 1345 1346 Version = CandidateVersion; 1347 GCCTriple.setTriple(CandidateTriple); 1348 // FIXME: We hack together the directory name here instead of 1349 // using LI to ensure stable path separators across Windows and 1350 // Linux. 1351 GCCInstallPath = LibDir + LibSuffixes[i] + "/" + VersionText.str(); 1352 GCCParentLibPath = GCCInstallPath + InstallSuffixes[i]; 1353 IsValid = true; 1354 } 1355 } 1356} 1357 1358Generic_GCC::Generic_GCC(const Driver &D, const llvm::Triple& Triple, 1359 const ArgList &Args) 1360 : ToolChain(D, Triple), GCCInstallation(getDriver(), Triple, Args) { 1361 getProgramPaths().push_back(getDriver().getInstalledDir()); 1362 if (getDriver().getInstalledDir() != getDriver().Dir) 1363 getProgramPaths().push_back(getDriver().Dir); 1364} 1365 1366Generic_GCC::~Generic_GCC() { 1367 // Free tool implementations. 1368 for (llvm::DenseMap<unsigned, Tool*>::iterator 1369 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 1370 delete it->second; 1371} 1372 1373Tool &Generic_GCC::SelectTool(const Compilation &C, 1374 const JobAction &JA, 1375 const ActionList &Inputs) const { 1376 Action::ActionClass Key; 1377 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1378 Key = Action::AnalyzeJobClass; 1379 else 1380 Key = JA.getKind(); 1381 1382 Tool *&T = Tools[Key]; 1383 if (!T) { 1384 switch (Key) { 1385 case Action::InputClass: 1386 case Action::BindArchClass: 1387 llvm_unreachable("Invalid tool kind."); 1388 case Action::PreprocessJobClass: 1389 T = new tools::gcc::Preprocess(*this); break; 1390 case Action::PrecompileJobClass: 1391 T = new tools::gcc::Precompile(*this); break; 1392 case Action::AnalyzeJobClass: 1393 case Action::MigrateJobClass: 1394 T = new tools::Clang(*this); break; 1395 case Action::CompileJobClass: 1396 T = new tools::gcc::Compile(*this); break; 1397 case Action::AssembleJobClass: 1398 T = new tools::gcc::Assemble(*this); break; 1399 case Action::LinkJobClass: 1400 T = new tools::gcc::Link(*this); break; 1401 1402 // This is a bit ungeneric, but the only platform using a driver 1403 // driver is Darwin. 1404 case Action::LipoJobClass: 1405 T = new tools::darwin::Lipo(*this); break; 1406 case Action::DsymutilJobClass: 1407 T = new tools::darwin::Dsymutil(*this); break; 1408 case Action::VerifyJobClass: 1409 T = new tools::darwin::VerifyDebug(*this); break; 1410 } 1411 } 1412 1413 return *T; 1414} 1415 1416bool Generic_GCC::IsUnwindTablesDefault() const { 1417 // FIXME: Gross; we should probably have some separate target 1418 // definition, possibly even reusing the one in clang. 1419 return getArch() == llvm::Triple::x86_64; 1420} 1421 1422const char *Generic_GCC::GetDefaultRelocationModel() const { 1423 return "static"; 1424} 1425 1426const char *Generic_GCC::GetForcedPicModel() const { 1427 return 0; 1428} 1429/// Hexagon Toolchain 1430 1431Hexagon_TC::Hexagon_TC(const Driver &D, const llvm::Triple& Triple) 1432 : ToolChain(D, Triple) { 1433 getProgramPaths().push_back(getDriver().getInstalledDir()); 1434 if (getDriver().getInstalledDir() != getDriver().Dir.c_str()) 1435 getProgramPaths().push_back(getDriver().Dir); 1436} 1437 1438Hexagon_TC::~Hexagon_TC() { 1439 // Free tool implementations. 1440 for (llvm::DenseMap<unsigned, Tool*>::iterator 1441 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 1442 delete it->second; 1443} 1444 1445Tool &Hexagon_TC::SelectTool(const Compilation &C, 1446 const JobAction &JA, 1447 const ActionList &Inputs) const { 1448 Action::ActionClass Key; 1449 // if (JA.getKind () == Action::CompileJobClass) 1450 // Key = JA.getKind (); 1451 // else 1452 1453 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1454 Key = Action::AnalyzeJobClass; 1455 else 1456 Key = JA.getKind(); 1457 // if ((JA.getKind () == Action::CompileJobClass) 1458 // && (JA.getType () != types::TY_LTO_BC)) { 1459 // Key = JA.getKind (); 1460 // } 1461 1462 Tool *&T = Tools[Key]; 1463 if (!T) { 1464 switch (Key) { 1465 case Action::InputClass: 1466 case Action::BindArchClass: 1467 assert(0 && "Invalid tool kind."); 1468 case Action::AnalyzeJobClass: 1469 T = new tools::Clang(*this); break; 1470 case Action::AssembleJobClass: 1471 T = new tools::hexagon::Assemble(*this); break; 1472 case Action::LinkJobClass: 1473 T = new tools::hexagon::Link(*this); break; 1474 default: 1475 assert(false && "Unsupported action for Hexagon target."); 1476 } 1477 } 1478 1479 return *T; 1480} 1481 1482bool Hexagon_TC::IsUnwindTablesDefault() const { 1483 return false; 1484} 1485 1486const char *Hexagon_TC::GetDefaultRelocationModel() const { 1487 return "static"; 1488} 1489 1490const char *Hexagon_TC::GetForcedPicModel() const { 1491 return 0; 1492} // End Hexagon 1493 1494 1495/// TCEToolChain - A tool chain using the llvm bitcode tools to perform 1496/// all subcommands. See http://tce.cs.tut.fi for our peculiar target. 1497/// Currently does not support anything else but compilation. 1498 1499TCEToolChain::TCEToolChain(const Driver &D, const llvm::Triple& Triple) 1500 : ToolChain(D, Triple) { 1501 // Path mangling to find libexec 1502 std::string Path(getDriver().Dir); 1503 1504 Path += "/../libexec"; 1505 getProgramPaths().push_back(Path); 1506} 1507 1508TCEToolChain::~TCEToolChain() { 1509 for (llvm::DenseMap<unsigned, Tool*>::iterator 1510 it = Tools.begin(), ie = Tools.end(); it != ie; ++it) 1511 delete it->second; 1512} 1513 1514bool TCEToolChain::IsMathErrnoDefault() const { 1515 return true; 1516} 1517 1518bool TCEToolChain::IsUnwindTablesDefault() const { 1519 return false; 1520} 1521 1522const char *TCEToolChain::GetDefaultRelocationModel() const { 1523 return "static"; 1524} 1525 1526const char *TCEToolChain::GetForcedPicModel() const { 1527 return 0; 1528} 1529 1530Tool &TCEToolChain::SelectTool(const Compilation &C, 1531 const JobAction &JA, 1532 const ActionList &Inputs) const { 1533 Action::ActionClass Key; 1534 Key = Action::AnalyzeJobClass; 1535 1536 Tool *&T = Tools[Key]; 1537 if (!T) { 1538 switch (Key) { 1539 case Action::PreprocessJobClass: 1540 T = new tools::gcc::Preprocess(*this); break; 1541 case Action::AnalyzeJobClass: 1542 T = new tools::Clang(*this); break; 1543 default: 1544 llvm_unreachable("Unsupported action for TCE target."); 1545 } 1546 } 1547 return *T; 1548} 1549 1550/// OpenBSD - OpenBSD tool chain which can call as(1) and ld(1) directly. 1551 1552OpenBSD::OpenBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1553 : Generic_ELF(D, Triple, Args) { 1554 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1555 getFilePaths().push_back("/usr/lib"); 1556} 1557 1558Tool &OpenBSD::SelectTool(const Compilation &C, const JobAction &JA, 1559 const ActionList &Inputs) const { 1560 Action::ActionClass Key; 1561 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1562 Key = Action::AnalyzeJobClass; 1563 else 1564 Key = JA.getKind(); 1565 1566 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 1567 options::OPT_no_integrated_as, 1568 IsIntegratedAssemblerDefault()); 1569 1570 Tool *&T = Tools[Key]; 1571 if (!T) { 1572 switch (Key) { 1573 case Action::AssembleJobClass: { 1574 if (UseIntegratedAs) 1575 T = new tools::ClangAs(*this); 1576 else 1577 T = new tools::openbsd::Assemble(*this); 1578 break; 1579 } 1580 case Action::LinkJobClass: 1581 T = new tools::openbsd::Link(*this); break; 1582 default: 1583 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1584 } 1585 } 1586 1587 return *T; 1588} 1589 1590/// Bitrig - Bitrig tool chain which can call as(1) and ld(1) directly. 1591 1592Bitrig::Bitrig(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1593 : Generic_ELF(D, Triple, Args) { 1594 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1595 getFilePaths().push_back("/usr/lib"); 1596} 1597 1598Tool &Bitrig::SelectTool(const Compilation &C, const JobAction &JA, 1599 const ActionList &Inputs) const { 1600 Action::ActionClass Key; 1601 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1602 Key = Action::AnalyzeJobClass; 1603 else 1604 Key = JA.getKind(); 1605 1606 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 1607 options::OPT_no_integrated_as, 1608 IsIntegratedAssemblerDefault()); 1609 1610 Tool *&T = Tools[Key]; 1611 if (!T) { 1612 switch (Key) { 1613 case Action::AssembleJobClass: { 1614 if (UseIntegratedAs) 1615 T = new tools::ClangAs(*this); 1616 else 1617 T = new tools::bitrig::Assemble(*this); 1618 break; 1619 } 1620 case Action::LinkJobClass: 1621 T = new tools::bitrig::Link(*this); break; 1622 default: 1623 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1624 } 1625 } 1626 1627 return *T; 1628} 1629 1630void Bitrig::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 1631 ArgStringList &CC1Args) const { 1632 if (DriverArgs.hasArg(options::OPT_nostdlibinc) || 1633 DriverArgs.hasArg(options::OPT_nostdincxx)) 1634 return; 1635 1636 std::string Triple = getTriple().str(); 1637 if (Triple.substr(0, 5) == "amd64") 1638 Triple.replace(0, 5, "x86_64"); 1639 1640 addSystemInclude(DriverArgs, CC1Args, "/usr/include/c++/4.6.2"); 1641 addSystemInclude(DriverArgs, CC1Args, "/usr/include/c++/4.6.2/backward"); 1642 addSystemInclude(DriverArgs, CC1Args, "/usr/include/c++/4.6.2/" + Triple); 1643 1644} 1645 1646void Bitrig::AddCXXStdlibLibArgs(const ArgList &Args, 1647 ArgStringList &CmdArgs) const { 1648 CmdArgs.push_back("-lstdc++"); 1649} 1650 1651/// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly. 1652 1653FreeBSD::FreeBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1654 : Generic_ELF(D, Triple, Args) { 1655 1656 // When targeting 32-bit platforms, look for '/usr/lib32/crt1.o' and fall 1657 // back to '/usr/lib' if it doesn't exist. 1658 if ((Triple.getArch() == llvm::Triple::x86 || 1659 Triple.getArch() == llvm::Triple::ppc) && 1660 llvm::sys::fs::exists(getDriver().SysRoot + "/usr/lib32/crt1.o")) 1661 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib32"); 1662 else 1663 getFilePaths().push_back(getDriver().SysRoot + "/usr/lib"); 1664} 1665 1666Tool &FreeBSD::SelectTool(const Compilation &C, const JobAction &JA, 1667 const ActionList &Inputs) const { 1668 Action::ActionClass Key; 1669 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1670 Key = Action::AnalyzeJobClass; 1671 else 1672 Key = JA.getKind(); 1673 1674 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 1675 options::OPT_no_integrated_as, 1676 IsIntegratedAssemblerDefault()); 1677 1678 Tool *&T = Tools[Key]; 1679 if (!T) { 1680 switch (Key) { 1681 case Action::AssembleJobClass: 1682 if (UseIntegratedAs) 1683 T = new tools::ClangAs(*this); 1684 else 1685 T = new tools::freebsd::Assemble(*this); 1686 break; 1687 case Action::LinkJobClass: 1688 T = new tools::freebsd::Link(*this); break; 1689 default: 1690 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1691 } 1692 } 1693 1694 return *T; 1695} 1696 1697/// NetBSD - NetBSD tool chain which can call as(1) and ld(1) directly. 1698 1699NetBSD::NetBSD(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1700 : Generic_ELF(D, Triple, Args) { 1701 1702 if (getDriver().UseStdLib) { 1703 // When targeting a 32-bit platform, try the special directory used on 1704 // 64-bit hosts, and only fall back to the main library directory if that 1705 // doesn't work. 1706 // FIXME: It'd be nicer to test if this directory exists, but I'm not sure 1707 // what all logic is needed to emulate the '=' prefix here. 1708 if (Triple.getArch() == llvm::Triple::x86) 1709 getFilePaths().push_back("=/usr/lib/i386"); 1710 1711 getFilePaths().push_back("=/usr/lib"); 1712 } 1713} 1714 1715Tool &NetBSD::SelectTool(const Compilation &C, const JobAction &JA, 1716 const ActionList &Inputs) const { 1717 Action::ActionClass Key; 1718 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1719 Key = Action::AnalyzeJobClass; 1720 else 1721 Key = JA.getKind(); 1722 1723 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 1724 options::OPT_no_integrated_as, 1725 IsIntegratedAssemblerDefault()); 1726 1727 Tool *&T = Tools[Key]; 1728 if (!T) { 1729 switch (Key) { 1730 case Action::AssembleJobClass: 1731 if (UseIntegratedAs) 1732 T = new tools::ClangAs(*this); 1733 else 1734 T = new tools::netbsd::Assemble(*this); 1735 break; 1736 case Action::LinkJobClass: 1737 T = new tools::netbsd::Link(*this); 1738 break; 1739 default: 1740 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1741 } 1742 } 1743 1744 return *T; 1745} 1746 1747/// Minix - Minix tool chain which can call as(1) and ld(1) directly. 1748 1749Minix::Minix(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 1750 : Generic_ELF(D, Triple, Args) { 1751 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1752 getFilePaths().push_back("/usr/lib"); 1753} 1754 1755Tool &Minix::SelectTool(const Compilation &C, const JobAction &JA, 1756 const ActionList &Inputs) const { 1757 Action::ActionClass Key; 1758 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1759 Key = Action::AnalyzeJobClass; 1760 else 1761 Key = JA.getKind(); 1762 1763 Tool *&T = Tools[Key]; 1764 if (!T) { 1765 switch (Key) { 1766 case Action::AssembleJobClass: 1767 T = new tools::minix::Assemble(*this); break; 1768 case Action::LinkJobClass: 1769 T = new tools::minix::Link(*this); break; 1770 default: 1771 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1772 } 1773 } 1774 1775 return *T; 1776} 1777 1778/// AuroraUX - AuroraUX tool chain which can call as(1) and ld(1) directly. 1779 1780AuroraUX::AuroraUX(const Driver &D, const llvm::Triple& Triple, 1781 const ArgList &Args) 1782 : Generic_GCC(D, Triple, Args) { 1783 1784 getProgramPaths().push_back(getDriver().getInstalledDir()); 1785 if (getDriver().getInstalledDir() != getDriver().Dir) 1786 getProgramPaths().push_back(getDriver().Dir); 1787 1788 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1789 getFilePaths().push_back("/usr/lib"); 1790 getFilePaths().push_back("/usr/sfw/lib"); 1791 getFilePaths().push_back("/opt/gcc4/lib"); 1792 getFilePaths().push_back("/opt/gcc4/lib/gcc/i386-pc-solaris2.11/4.2.4"); 1793 1794} 1795 1796Tool &AuroraUX::SelectTool(const Compilation &C, const JobAction &JA, 1797 const ActionList &Inputs) const { 1798 Action::ActionClass Key; 1799 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1800 Key = Action::AnalyzeJobClass; 1801 else 1802 Key = JA.getKind(); 1803 1804 Tool *&T = Tools[Key]; 1805 if (!T) { 1806 switch (Key) { 1807 case Action::AssembleJobClass: 1808 T = new tools::auroraux::Assemble(*this); break; 1809 case Action::LinkJobClass: 1810 T = new tools::auroraux::Link(*this); break; 1811 default: 1812 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1813 } 1814 } 1815 1816 return *T; 1817} 1818 1819/// Solaris - Solaris tool chain which can call as(1) and ld(1) directly. 1820 1821Solaris::Solaris(const Driver &D, const llvm::Triple& Triple, 1822 const ArgList &Args) 1823 : Generic_GCC(D, Triple, Args) { 1824 1825 getProgramPaths().push_back(getDriver().getInstalledDir()); 1826 if (getDriver().getInstalledDir() != getDriver().Dir) 1827 getProgramPaths().push_back(getDriver().Dir); 1828 1829 getFilePaths().push_back(getDriver().Dir + "/../lib"); 1830 getFilePaths().push_back("/usr/lib"); 1831} 1832 1833Tool &Solaris::SelectTool(const Compilation &C, const JobAction &JA, 1834 const ActionList &Inputs) const { 1835 Action::ActionClass Key; 1836 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 1837 Key = Action::AnalyzeJobClass; 1838 else 1839 Key = JA.getKind(); 1840 1841 Tool *&T = Tools[Key]; 1842 if (!T) { 1843 switch (Key) { 1844 case Action::AssembleJobClass: 1845 T = new tools::solaris::Assemble(*this); break; 1846 case Action::LinkJobClass: 1847 T = new tools::solaris::Link(*this); break; 1848 default: 1849 T = &Generic_GCC::SelectTool(C, JA, Inputs); 1850 } 1851 } 1852 1853 return *T; 1854} 1855 1856/// Linux toolchain (very bare-bones at the moment). 1857 1858enum LinuxDistro { 1859 ArchLinux, 1860 DebianLenny, 1861 DebianSqueeze, 1862 DebianWheezy, 1863 Exherbo, 1864 RHEL4, 1865 RHEL5, 1866 RHEL6, 1867 Fedora13, 1868 Fedora14, 1869 Fedora15, 1870 Fedora16, 1871 FedoraRawhide, 1872 OpenSuse11_3, 1873 OpenSuse11_4, 1874 OpenSuse12_1, 1875 OpenSuse12_2, 1876 UbuntuHardy, 1877 UbuntuIntrepid, 1878 UbuntuJaunty, 1879 UbuntuKarmic, 1880 UbuntuLucid, 1881 UbuntuMaverick, 1882 UbuntuNatty, 1883 UbuntuOneiric, 1884 UbuntuPrecise, 1885 UnknownDistro 1886}; 1887 1888static bool IsRedhat(enum LinuxDistro Distro) { 1889 return (Distro >= Fedora13 && Distro <= FedoraRawhide) || 1890 (Distro >= RHEL4 && Distro <= RHEL6); 1891} 1892 1893static bool IsOpenSuse(enum LinuxDistro Distro) { 1894 return Distro >= OpenSuse11_3 && Distro <= OpenSuse12_2; 1895} 1896 1897static bool IsDebian(enum LinuxDistro Distro) { 1898 return Distro >= DebianLenny && Distro <= DebianWheezy; 1899} 1900 1901static bool IsUbuntu(enum LinuxDistro Distro) { 1902 return Distro >= UbuntuHardy && Distro <= UbuntuPrecise; 1903} 1904 1905static LinuxDistro DetectLinuxDistro(llvm::Triple::ArchType Arch) { 1906 OwningPtr<llvm::MemoryBuffer> File; 1907 if (!llvm::MemoryBuffer::getFile("/etc/lsb-release", File)) { 1908 StringRef Data = File.get()->getBuffer(); 1909 SmallVector<StringRef, 8> Lines; 1910 Data.split(Lines, "\n"); 1911 LinuxDistro Version = UnknownDistro; 1912 for (unsigned i = 0, s = Lines.size(); i != s; ++i) 1913 if (Version == UnknownDistro && Lines[i].startswith("DISTRIB_CODENAME=")) 1914 Version = llvm::StringSwitch<LinuxDistro>(Lines[i].substr(17)) 1915 .Case("hardy", UbuntuHardy) 1916 .Case("intrepid", UbuntuIntrepid) 1917 .Case("jaunty", UbuntuJaunty) 1918 .Case("karmic", UbuntuKarmic) 1919 .Case("lucid", UbuntuLucid) 1920 .Case("maverick", UbuntuMaverick) 1921 .Case("natty", UbuntuNatty) 1922 .Case("oneiric", UbuntuOneiric) 1923 .Case("precise", UbuntuPrecise) 1924 .Default(UnknownDistro); 1925 return Version; 1926 } 1927 1928 if (!llvm::MemoryBuffer::getFile("/etc/redhat-release", File)) { 1929 StringRef Data = File.get()->getBuffer(); 1930 if (Data.startswith("Fedora release 16")) 1931 return Fedora16; 1932 else if (Data.startswith("Fedora release 15")) 1933 return Fedora15; 1934 else if (Data.startswith("Fedora release 14")) 1935 return Fedora14; 1936 else if (Data.startswith("Fedora release 13")) 1937 return Fedora13; 1938 else if (Data.startswith("Fedora release") && 1939 Data.find("Rawhide") != StringRef::npos) 1940 return FedoraRawhide; 1941 else if (Data.startswith("Red Hat Enterprise Linux") && 1942 Data.find("release 6") != StringRef::npos) 1943 return RHEL6; 1944 else if ((Data.startswith("Red Hat Enterprise Linux") || 1945 Data.startswith("CentOS")) && 1946 Data.find("release 5") != StringRef::npos) 1947 return RHEL5; 1948 else if ((Data.startswith("Red Hat Enterprise Linux") || 1949 Data.startswith("CentOS")) && 1950 Data.find("release 4") != StringRef::npos) 1951 return RHEL4; 1952 return UnknownDistro; 1953 } 1954 1955 if (!llvm::MemoryBuffer::getFile("/etc/debian_version", File)) { 1956 StringRef Data = File.get()->getBuffer(); 1957 if (Data[0] == '5') 1958 return DebianLenny; 1959 else if (Data.startswith("squeeze/sid") || Data[0] == '6') 1960 return DebianSqueeze; 1961 else if (Data.startswith("wheezy/sid") || Data[0] == '7') 1962 return DebianWheezy; 1963 return UnknownDistro; 1964 } 1965 1966 if (!llvm::MemoryBuffer::getFile("/etc/SuSE-release", File)) 1967 return llvm::StringSwitch<LinuxDistro>(File.get()->getBuffer()) 1968 .StartsWith("openSUSE 11.3", OpenSuse11_3) 1969 .StartsWith("openSUSE 11.4", OpenSuse11_4) 1970 .StartsWith("openSUSE 12.1", OpenSuse12_1) 1971 .StartsWith("openSUSE 12.2", OpenSuse12_2) 1972 .Default(UnknownDistro); 1973 1974 bool Exists; 1975 if (!llvm::sys::fs::exists("/etc/exherbo-release", Exists) && Exists) 1976 return Exherbo; 1977 1978 if (!llvm::sys::fs::exists("/etc/arch-release", Exists) && Exists) 1979 return ArchLinux; 1980 1981 return UnknownDistro; 1982} 1983 1984/// \brief Get our best guess at the multiarch triple for a target. 1985/// 1986/// Debian-based systems are starting to use a multiarch setup where they use 1987/// a target-triple directory in the library and header search paths. 1988/// Unfortunately, this triple does not align with the vanilla target triple, 1989/// so we provide a rough mapping here. 1990static std::string getMultiarchTriple(const llvm::Triple TargetTriple, 1991 StringRef SysRoot) { 1992 // For most architectures, just use whatever we have rather than trying to be 1993 // clever. 1994 switch (TargetTriple.getArch()) { 1995 default: 1996 return TargetTriple.str(); 1997 1998 // We use the existence of '/lib/<triple>' as a directory to detect some 1999 // common linux triples that don't quite match the Clang triple for both 2000 // 32-bit and 64-bit targets. Multiarch fixes its install triples to these 2001 // regardless of what the actual target triple is. 2002 case llvm::Triple::arm: 2003 case llvm::Triple::thumb: 2004 if (TargetTriple.getEnvironment() == llvm::Triple::GNUEABIHF) { 2005 if (llvm::sys::fs::exists(SysRoot + "/lib/arm-linux-gnueabihf")) 2006 return "arm-linux-gnueabihf"; 2007 } else { 2008 if (llvm::sys::fs::exists(SysRoot + "/lib/arm-linux-gnueabi")) 2009 return "arm-linux-gnueabi"; 2010 } 2011 return TargetTriple.str(); 2012 case llvm::Triple::x86: 2013 if (llvm::sys::fs::exists(SysRoot + "/lib/i386-linux-gnu")) 2014 return "i386-linux-gnu"; 2015 return TargetTriple.str(); 2016 case llvm::Triple::x86_64: 2017 if (llvm::sys::fs::exists(SysRoot + "/lib/x86_64-linux-gnu")) 2018 return "x86_64-linux-gnu"; 2019 return TargetTriple.str(); 2020 case llvm::Triple::mips: 2021 if (llvm::sys::fs::exists(SysRoot + "/lib/mips-linux-gnu")) 2022 return "mips-linux-gnu"; 2023 return TargetTriple.str(); 2024 case llvm::Triple::mipsel: 2025 if (llvm::sys::fs::exists(SysRoot + "/lib/mipsel-linux-gnu")) 2026 return "mipsel-linux-gnu"; 2027 return TargetTriple.str(); 2028 case llvm::Triple::ppc: 2029 if (llvm::sys::fs::exists(SysRoot + "/lib/powerpc-linux-gnu")) 2030 return "powerpc-linux-gnu"; 2031 return TargetTriple.str(); 2032 case llvm::Triple::ppc64: 2033 if (llvm::sys::fs::exists(SysRoot + "/lib/powerpc64-linux-gnu")) 2034 return "powerpc64-linux-gnu"; 2035 return TargetTriple.str(); 2036 } 2037} 2038 2039static void addPathIfExists(Twine Path, ToolChain::path_list &Paths) { 2040 if (llvm::sys::fs::exists(Path)) Paths.push_back(Path.str()); 2041} 2042 2043static bool isMipsArch(llvm::Triple::ArchType Arch) { 2044 return Arch == llvm::Triple::mips || 2045 Arch == llvm::Triple::mipsel || 2046 Arch == llvm::Triple::mips64 || 2047 Arch == llvm::Triple::mips64el; 2048} 2049 2050static StringRef getMultilibDir(const llvm::Triple &Triple, 2051 const ArgList &Args) { 2052 if (!isMipsArch(Triple.getArch())) 2053 return Triple.isArch32Bit() ? "lib32" : "lib64"; 2054 2055 // lib32 directory has a special meaning on MIPS targets. 2056 // It contains N32 ABI binaries. Use this folder if produce 2057 // code for N32 ABI only. 2058 Arg *A = Args.getLastArg(options::OPT_mabi_EQ); 2059 if (A && (A->getValue(Args) == StringRef("n32"))) 2060 return "lib32"; 2061 2062 return Triple.isArch32Bit() ? "lib" : "lib64"; 2063} 2064 2065Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args) 2066 : Generic_ELF(D, Triple, Args) { 2067 llvm::Triple::ArchType Arch = Triple.getArch(); 2068 const std::string &SysRoot = getDriver().SysRoot; 2069 2070 // OpenSuse stores the linker with the compiler, add that to the search 2071 // path. 2072 ToolChain::path_list &PPaths = getProgramPaths(); 2073 PPaths.push_back(Twine(GCCInstallation.getParentLibPath() + "/../" + 2074 GCCInstallation.getTriple().str() + "/bin").str()); 2075 2076 Linker = GetProgramPath("ld"); 2077 2078 LinuxDistro Distro = DetectLinuxDistro(Arch); 2079 2080 if (IsOpenSuse(Distro) || IsUbuntu(Distro)) { 2081 ExtraOpts.push_back("-z"); 2082 ExtraOpts.push_back("relro"); 2083 } 2084 2085 if (Arch == llvm::Triple::arm || Arch == llvm::Triple::thumb) 2086 ExtraOpts.push_back("-X"); 2087 2088 const bool IsAndroid = Triple.getEnvironment() == llvm::Triple::Android; 2089 2090 // Do not use 'gnu' hash style for Mips targets because .gnu.hash 2091 // and the MIPS ABI require .dynsym to be sorted in different ways. 2092 // .gnu.hash needs symbols to be grouped by hash code whereas the MIPS 2093 // ABI requires a mapping between the GOT and the symbol table. 2094 // Android loader does not support .gnu.hash. 2095 if (!isMipsArch(Arch) && !IsAndroid) { 2096 if (IsRedhat(Distro) || IsOpenSuse(Distro) || 2097 (IsUbuntu(Distro) && Distro >= UbuntuMaverick)) 2098 ExtraOpts.push_back("--hash-style=gnu"); 2099 2100 if (IsDebian(Distro) || IsOpenSuse(Distro) || Distro == UbuntuLucid || 2101 Distro == UbuntuJaunty || Distro == UbuntuKarmic) 2102 ExtraOpts.push_back("--hash-style=both"); 2103 } 2104 2105 if (IsRedhat(Distro)) 2106 ExtraOpts.push_back("--no-add-needed"); 2107 2108 if (Distro == DebianSqueeze || Distro == DebianWheezy || 2109 IsOpenSuse(Distro) || 2110 (IsRedhat(Distro) && Distro != RHEL4 && Distro != RHEL5) || 2111 (IsUbuntu(Distro) && Distro >= UbuntuKarmic)) 2112 ExtraOpts.push_back("--build-id"); 2113 2114 if (IsOpenSuse(Distro)) 2115 ExtraOpts.push_back("--enable-new-dtags"); 2116 2117 // The selection of paths to try here is designed to match the patterns which 2118 // the GCC driver itself uses, as this is part of the GCC-compatible driver. 2119 // This was determined by running GCC in a fake filesystem, creating all 2120 // possible permutations of these directories, and seeing which ones it added 2121 // to the link paths. 2122 path_list &Paths = getFilePaths(); 2123 2124 const std::string Multilib = getMultilibDir(Triple, Args); 2125 const std::string MultiarchTriple = getMultiarchTriple(Triple, SysRoot); 2126 2127 // Add the multilib suffixed paths where they are available. 2128 if (GCCInstallation.isValid()) { 2129 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2130 const std::string &LibPath = GCCInstallation.getParentLibPath(); 2131 addPathIfExists((GCCInstallation.getInstallPath() + 2132 GCCInstallation.getMultiarchSuffix()), 2133 Paths); 2134 2135 // If the GCC installation we found is inside of the sysroot, we want to 2136 // prefer libraries installed in the parent prefix of the GCC installation. 2137 // It is important to *not* use these paths when the GCC installation is 2138 // outside of the system root as that can pick up unintended libraries. 2139 // This usually happens when there is an external cross compiler on the 2140 // host system, and a more minimal sysroot available that is the target of 2141 // the cross. 2142 if (StringRef(LibPath).startswith(SysRoot)) { 2143 addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib/../" + Multilib, 2144 Paths); 2145 addPathIfExists(LibPath + "/" + MultiarchTriple, Paths); 2146 addPathIfExists(LibPath + "/../" + Multilib, Paths); 2147 } 2148 // On Android, libraries in the parent prefix of the GCC installation are 2149 // preferred to the ones under sysroot. 2150 if (IsAndroid) { 2151 addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib", Paths); 2152 } 2153 } 2154 addPathIfExists(SysRoot + "/lib/" + MultiarchTriple, Paths); 2155 addPathIfExists(SysRoot + "/lib/../" + Multilib, Paths); 2156 addPathIfExists(SysRoot + "/usr/lib/" + MultiarchTriple, Paths); 2157 addPathIfExists(SysRoot + "/usr/lib/../" + Multilib, Paths); 2158 2159 // Try walking via the GCC triple path in case of multiarch GCC 2160 // installations with strange symlinks. 2161 if (GCCInstallation.isValid()) 2162 addPathIfExists(SysRoot + "/usr/lib/" + GCCInstallation.getTriple().str() + 2163 "/../../" + Multilib, Paths); 2164 2165 // Add the non-multilib suffixed paths (if potentially different). 2166 if (GCCInstallation.isValid()) { 2167 const std::string &LibPath = GCCInstallation.getParentLibPath(); 2168 const llvm::Triple &GCCTriple = GCCInstallation.getTriple(); 2169 if (!GCCInstallation.getMultiarchSuffix().empty()) 2170 addPathIfExists(GCCInstallation.getInstallPath(), Paths); 2171 2172 if (StringRef(LibPath).startswith(SysRoot)) { 2173 addPathIfExists(LibPath + "/../" + GCCTriple.str() + "/lib", Paths); 2174 addPathIfExists(LibPath, Paths); 2175 } 2176 } 2177 addPathIfExists(SysRoot + "/lib", Paths); 2178 addPathIfExists(SysRoot + "/usr/lib", Paths); 2179} 2180 2181bool Linux::HasNativeLLVMSupport() const { 2182 return true; 2183} 2184 2185Tool &Linux::SelectTool(const Compilation &C, const JobAction &JA, 2186 const ActionList &Inputs) const { 2187 Action::ActionClass Key; 2188 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 2189 Key = Action::AnalyzeJobClass; 2190 else 2191 Key = JA.getKind(); 2192 2193 bool UseIntegratedAs = C.getArgs().hasFlag(options::OPT_integrated_as, 2194 options::OPT_no_integrated_as, 2195 IsIntegratedAssemblerDefault()); 2196 2197 Tool *&T = Tools[Key]; 2198 if (!T) { 2199 switch (Key) { 2200 case Action::AssembleJobClass: 2201 if (UseIntegratedAs) 2202 T = new tools::ClangAs(*this); 2203 else 2204 T = new tools::linuxtools::Assemble(*this); 2205 break; 2206 case Action::LinkJobClass: 2207 T = new tools::linuxtools::Link(*this); break; 2208 default: 2209 T = &Generic_GCC::SelectTool(C, JA, Inputs); 2210 } 2211 } 2212 2213 return *T; 2214} 2215 2216void Linux::addClangTargetOptions(ArgStringList &CC1Args) const { 2217 const Generic_GCC::GCCVersion &V = GCCInstallation.getVersion(); 2218 if (V >= Generic_GCC::GCCVersion::Parse("4.7.0")) 2219 CC1Args.push_back("-fuse-init-array"); 2220} 2221 2222void Linux::AddClangSystemIncludeArgs(const ArgList &DriverArgs, 2223 ArgStringList &CC1Args) const { 2224 const Driver &D = getDriver(); 2225 2226 if (DriverArgs.hasArg(options::OPT_nostdinc)) 2227 return; 2228 2229 if (!DriverArgs.hasArg(options::OPT_nostdlibinc)) 2230 addSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/usr/local/include"); 2231 2232 if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) { 2233 llvm::sys::Path P(D.ResourceDir); 2234 P.appendComponent("include"); 2235 addSystemInclude(DriverArgs, CC1Args, P.str()); 2236 } 2237 2238 if (DriverArgs.hasArg(options::OPT_nostdlibinc)) 2239 return; 2240 2241 // Check for configure-time C include directories. 2242 StringRef CIncludeDirs(C_INCLUDE_DIRS); 2243 if (CIncludeDirs != "") { 2244 SmallVector<StringRef, 5> dirs; 2245 CIncludeDirs.split(dirs, ":"); 2246 for (SmallVectorImpl<StringRef>::iterator I = dirs.begin(), E = dirs.end(); 2247 I != E; ++I) { 2248 StringRef Prefix = llvm::sys::path::is_absolute(*I) ? D.SysRoot : ""; 2249 addExternCSystemInclude(DriverArgs, CC1Args, Prefix + *I); 2250 } 2251 return; 2252 } 2253 2254 // Lacking those, try to detect the correct set of system includes for the 2255 // target triple. 2256 2257 // Implement generic Debian multiarch support. 2258 const StringRef X86_64MultiarchIncludeDirs[] = { 2259 "/usr/include/x86_64-linux-gnu", 2260 2261 // FIXME: These are older forms of multiarch. It's not clear that they're 2262 // in use in any released version of Debian, so we should consider 2263 // removing them. 2264 "/usr/include/i686-linux-gnu/64", 2265 "/usr/include/i486-linux-gnu/64" 2266 }; 2267 const StringRef X86MultiarchIncludeDirs[] = { 2268 "/usr/include/i386-linux-gnu", 2269 2270 // FIXME: These are older forms of multiarch. It's not clear that they're 2271 // in use in any released version of Debian, so we should consider 2272 // removing them. 2273 "/usr/include/x86_64-linux-gnu/32", 2274 "/usr/include/i686-linux-gnu", 2275 "/usr/include/i486-linux-gnu" 2276 }; 2277 const StringRef ARMMultiarchIncludeDirs[] = { 2278 "/usr/include/arm-linux-gnueabi" 2279 }; 2280 const StringRef ARMHFMultiarchIncludeDirs[] = { 2281 "/usr/include/arm-linux-gnueabihf" 2282 }; 2283 const StringRef MIPSMultiarchIncludeDirs[] = { 2284 "/usr/include/mips-linux-gnu" 2285 }; 2286 const StringRef MIPSELMultiarchIncludeDirs[] = { 2287 "/usr/include/mipsel-linux-gnu" 2288 }; 2289 const StringRef PPCMultiarchIncludeDirs[] = { 2290 "/usr/include/powerpc-linux-gnu" 2291 }; 2292 const StringRef PPC64MultiarchIncludeDirs[] = { 2293 "/usr/include/powerpc64-linux-gnu" 2294 }; 2295 ArrayRef<StringRef> MultiarchIncludeDirs; 2296 if (getTriple().getArch() == llvm::Triple::x86_64) { 2297 MultiarchIncludeDirs = X86_64MultiarchIncludeDirs; 2298 } else if (getTriple().getArch() == llvm::Triple::x86) { 2299 MultiarchIncludeDirs = X86MultiarchIncludeDirs; 2300 } else if (getTriple().getArch() == llvm::Triple::arm) { 2301 if (getTriple().getEnvironment() == llvm::Triple::GNUEABIHF) 2302 MultiarchIncludeDirs = ARMHFMultiarchIncludeDirs; 2303 else 2304 MultiarchIncludeDirs = ARMMultiarchIncludeDirs; 2305 } else if (getTriple().getArch() == llvm::Triple::mips) { 2306 MultiarchIncludeDirs = MIPSMultiarchIncludeDirs; 2307 } else if (getTriple().getArch() == llvm::Triple::mipsel) { 2308 MultiarchIncludeDirs = MIPSELMultiarchIncludeDirs; 2309 } else if (getTriple().getArch() == llvm::Triple::ppc) { 2310 MultiarchIncludeDirs = PPCMultiarchIncludeDirs; 2311 } else if (getTriple().getArch() == llvm::Triple::ppc64) { 2312 MultiarchIncludeDirs = PPC64MultiarchIncludeDirs; 2313 } 2314 for (ArrayRef<StringRef>::iterator I = MultiarchIncludeDirs.begin(), 2315 E = MultiarchIncludeDirs.end(); 2316 I != E; ++I) { 2317 if (llvm::sys::fs::exists(D.SysRoot + *I)) { 2318 addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + *I); 2319 break; 2320 } 2321 } 2322 2323 if (getTriple().getOS() == llvm::Triple::RTEMS) 2324 return; 2325 2326 // Add an include of '/include' directly. This isn't provided by default by 2327 // system GCCs, but is often used with cross-compiling GCCs, and harmless to 2328 // add even when Clang is acting as-if it were a system compiler. 2329 addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/include"); 2330 2331 addExternCSystemInclude(DriverArgs, CC1Args, D.SysRoot + "/usr/include"); 2332} 2333 2334/// \brief Helper to add the thre variant paths for a libstdc++ installation. 2335/*static*/ bool Linux::addLibStdCXXIncludePaths(Twine Base, Twine TargetArchDir, 2336 const ArgList &DriverArgs, 2337 ArgStringList &CC1Args) { 2338 if (!llvm::sys::fs::exists(Base)) 2339 return false; 2340 addSystemInclude(DriverArgs, CC1Args, Base); 2341 addSystemInclude(DriverArgs, CC1Args, Base + "/" + TargetArchDir); 2342 addSystemInclude(DriverArgs, CC1Args, Base + "/backward"); 2343 return true; 2344} 2345 2346void Linux::AddClangCXXStdlibIncludeArgs(const ArgList &DriverArgs, 2347 ArgStringList &CC1Args) const { 2348 if (DriverArgs.hasArg(options::OPT_nostdlibinc) || 2349 DriverArgs.hasArg(options::OPT_nostdincxx)) 2350 return; 2351 2352 // Check if libc++ has been enabled and provide its include paths if so. 2353 if (GetCXXStdlibType(DriverArgs) == ToolChain::CST_Libcxx) { 2354 // libc++ is always installed at a fixed path on Linux currently. 2355 addSystemInclude(DriverArgs, CC1Args, 2356 getDriver().SysRoot + "/usr/include/c++/v1"); 2357 return; 2358 } 2359 2360 // We need a detected GCC installation on Linux to provide libstdc++'s 2361 // headers. We handled the libc++ case above. 2362 if (!GCCInstallation.isValid()) 2363 return; 2364 2365 // By default, look for the C++ headers in an include directory adjacent to 2366 // the lib directory of the GCC installation. Note that this is expect to be 2367 // equivalent to '/usr/include/c++/X.Y' in almost all cases. 2368 StringRef LibDir = GCCInstallation.getParentLibPath(); 2369 StringRef InstallDir = GCCInstallation.getInstallPath(); 2370 StringRef Version = GCCInstallation.getVersion().Text; 2371 StringRef TripleStr = GCCInstallation.getTriple().str(); 2372 2373 const std::string IncludePathCandidates[] = { 2374 LibDir.str() + "/../include/c++/" + Version.str(), 2375 // Gentoo is weird and places its headers inside the GCC install, so if the 2376 // first attempt to find the headers fails, try this pattern. 2377 InstallDir.str() + "/include/g++-v4", 2378 // Android standalone toolchain has C++ headers in yet another place. 2379 LibDir.str() + "/../" + TripleStr.str() + "/include/c++/" + Version.str(), 2380 // Freescale SDK C++ headers are directly in <sysroot>/usr/include/c++, 2381 // without a subdirectory corresponding to the gcc version. 2382 LibDir.str() + "/../include/c++", 2383 }; 2384 2385 for (unsigned i = 0; i < llvm::array_lengthof(IncludePathCandidates); ++i) { 2386 if (addLibStdCXXIncludePaths(IncludePathCandidates[i], (TripleStr + 2387 GCCInstallation.getMultiarchSuffix()), 2388 DriverArgs, CC1Args)) 2389 break; 2390 } 2391} 2392 2393/// DragonFly - DragonFly tool chain which can call as(1) and ld(1) directly. 2394 2395DragonFly::DragonFly(const Driver &D, const llvm::Triple& Triple, const ArgList &Args) 2396 : Generic_ELF(D, Triple, Args) { 2397 2398 // Path mangling to find libexec 2399 getProgramPaths().push_back(getDriver().getInstalledDir()); 2400 if (getDriver().getInstalledDir() != getDriver().Dir) 2401 getProgramPaths().push_back(getDriver().Dir); 2402 2403 getFilePaths().push_back(getDriver().Dir + "/../lib"); 2404 getFilePaths().push_back("/usr/lib"); 2405 getFilePaths().push_back("/usr/lib/gcc41"); 2406} 2407 2408Tool &DragonFly::SelectTool(const Compilation &C, const JobAction &JA, 2409 const ActionList &Inputs) const { 2410 Action::ActionClass Key; 2411 if (getDriver().ShouldUseClangCompiler(C, JA, getTriple())) 2412 Key = Action::AnalyzeJobClass; 2413 else 2414 Key = JA.getKind(); 2415 2416 Tool *&T = Tools[Key]; 2417 if (!T) { 2418 switch (Key) { 2419 case Action::AssembleJobClass: 2420 T = new tools::dragonfly::Assemble(*this); break; 2421 case Action::LinkJobClass: 2422 T = new tools::dragonfly::Link(*this); break; 2423 default: 2424 T = &Generic_GCC::SelectTool(C, JA, Inputs); 2425 } 2426 } 2427 2428 return *T; 2429} 2430