Driver.cpp revision 205219
1//===--- Driver.cpp - Clang GCC Compatible Driver -----------------------*-===// 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 "clang/Driver/Driver.h" 11 12#include "clang/Driver/Action.h" 13#include "clang/Driver/Arg.h" 14#include "clang/Driver/ArgList.h" 15#include "clang/Driver/Compilation.h" 16#include "clang/Driver/DriverDiagnostic.h" 17#include "clang/Driver/HostInfo.h" 18#include "clang/Driver/Job.h" 19#include "clang/Driver/OptTable.h" 20#include "clang/Driver/Option.h" 21#include "clang/Driver/Options.h" 22#include "clang/Driver/Tool.h" 23#include "clang/Driver/ToolChain.h" 24#include "clang/Driver/Types.h" 25 26#include "clang/Basic/Version.h" 27 28#include "llvm/ADT/StringSet.h" 29#include "llvm/ADT/OwningPtr.h" 30#include "llvm/Support/PrettyStackTrace.h" 31#include "llvm/Support/raw_ostream.h" 32#include "llvm/System/Path.h" 33#include "llvm/System/Program.h" 34 35#include "InputInfo.h" 36 37#include <map> 38 39using namespace clang::driver; 40using namespace clang; 41 42// Used to set values for "production" clang, for releases. 43// #define USE_PRODUCTION_CLANG 44 45Driver::Driver(llvm::StringRef _Name, llvm::StringRef _Dir, 46 llvm::StringRef _DefaultHostTriple, 47 llvm::StringRef _DefaultImageName, 48 bool IsProduction, Diagnostic &_Diags) 49 : Opts(createDriverOptTable()), Diags(_Diags), 50 Name(_Name), Dir(_Dir), DefaultHostTriple(_DefaultHostTriple), 51 DefaultImageName(_DefaultImageName), 52 DriverTitle("clang \"gcc-compatible\" driver"), 53 Host(0), 54 CCCGenericGCCName("gcc"), CCCIsCXX(false), CCCEcho(false), 55 CCCPrintBindings(false), CheckInputsExist(true), CCCUseClang(true), 56 CCCUseClangCXX(true), CCCUseClangCPP(true), CCCUsePCH(true), 57 SuppressMissingInputWarning(false) { 58 if (IsProduction) { 59 // In a "production" build, only use clang on architectures we expect to 60 // work, and don't use clang C++. 61 // 62 // During development its more convenient to always have the driver use 63 // clang, but we don't want users to be confused when things don't work, or 64 // to file bugs for things we don't support. 65 CCCClangArchs.insert(llvm::Triple::x86); 66 CCCClangArchs.insert(llvm::Triple::x86_64); 67 CCCClangArchs.insert(llvm::Triple::arm); 68 69 CCCUseClangCXX = false; 70 } 71 72 // Compute the path to the resource directory. 73 llvm::sys::Path P(Dir); 74 P.eraseComponent(); // Remove /bin from foo/bin 75 P.appendComponent("lib"); 76 P.appendComponent("clang"); 77 P.appendComponent(CLANG_VERSION_STRING); 78 ResourceDir = P.str(); 79} 80 81Driver::~Driver() { 82 delete Opts; 83 delete Host; 84} 85 86InputArgList *Driver::ParseArgStrings(const char **ArgBegin, 87 const char **ArgEnd) { 88 llvm::PrettyStackTraceString CrashInfo("Command line argument parsing"); 89 unsigned MissingArgIndex, MissingArgCount; 90 InputArgList *Args = getOpts().ParseArgs(ArgBegin, ArgEnd, 91 MissingArgIndex, MissingArgCount); 92 93 // Check for missing argument error. 94 if (MissingArgCount) 95 Diag(clang::diag::err_drv_missing_argument) 96 << Args->getArgString(MissingArgIndex) << MissingArgCount; 97 98 // Check for unsupported options. 99 for (ArgList::const_iterator it = Args->begin(), ie = Args->end(); 100 it != ie; ++it) { 101 Arg *A = *it; 102 if (A->getOption().isUnsupported()) { 103 Diag(clang::diag::err_drv_unsupported_opt) << A->getAsString(*Args); 104 continue; 105 } 106 } 107 108 return Args; 109} 110 111Compilation *Driver::BuildCompilation(int argc, const char **argv) { 112 llvm::PrettyStackTraceString CrashInfo("Compilation construction"); 113 114 // FIXME: Handle environment options which effect driver behavior, somewhere 115 // (client?). GCC_EXEC_PREFIX, COMPILER_PATH, LIBRARY_PATH, LPATH, 116 // CC_PRINT_OPTIONS. 117 118 // FIXME: What are we going to do with -V and -b? 119 120 // FIXME: This stuff needs to go into the Compilation, not the driver. 121 bool CCCPrintOptions = false, CCCPrintActions = false; 122 123 const char **Start = argv + 1, **End = argv + argc; 124 const char *HostTriple = DefaultHostTriple.c_str(); 125 126 InputArgList *Args = ParseArgStrings(Start, End); 127 128 // -no-canonical-prefixes is used very early in main. 129 Args->ClaimAllArgs(options::OPT_no_canonical_prefixes); 130 131 // Extract -ccc args. 132 // 133 // FIXME: We need to figure out where this behavior should live. Most of it 134 // should be outside in the client; the parts that aren't should have proper 135 // options, either by introducing new ones or by overloading gcc ones like -V 136 // or -b. 137 CCCPrintOptions = Args->hasArg(options::OPT_ccc_print_options); 138 CCCPrintActions = Args->hasArg(options::OPT_ccc_print_phases); 139 CCCPrintBindings = Args->hasArg(options::OPT_ccc_print_bindings); 140 CCCIsCXX = Args->hasArg(options::OPT_ccc_cxx) || CCCIsCXX; 141 CCCEcho = Args->hasArg(options::OPT_ccc_echo); 142 if (const Arg *A = Args->getLastArg(options::OPT_ccc_gcc_name)) 143 CCCGenericGCCName = A->getValue(*Args); 144 CCCUseClangCXX = Args->hasFlag(options::OPT_ccc_clang_cxx, 145 options::OPT_ccc_no_clang_cxx, 146 CCCUseClangCXX); 147 CCCUsePCH = Args->hasFlag(options::OPT_ccc_pch_is_pch, 148 options::OPT_ccc_pch_is_pth); 149 CCCUseClang = !Args->hasArg(options::OPT_ccc_no_clang); 150 CCCUseClangCPP = !Args->hasArg(options::OPT_ccc_no_clang_cpp); 151 if (const Arg *A = Args->getLastArg(options::OPT_ccc_clang_archs)) { 152 llvm::StringRef Cur = A->getValue(*Args); 153 154 CCCClangArchs.clear(); 155 while (!Cur.empty()) { 156 std::pair<llvm::StringRef, llvm::StringRef> Split = Cur.split(','); 157 158 if (!Split.first.empty()) { 159 llvm::Triple::ArchType Arch = 160 llvm::Triple(Split.first, "", "").getArch(); 161 162 if (Arch == llvm::Triple::UnknownArch) 163 Diag(clang::diag::err_drv_invalid_arch_name) << Split.first; 164 165 CCCClangArchs.insert(Arch); 166 } 167 168 Cur = Split.second; 169 } 170 } 171 if (const Arg *A = Args->getLastArg(options::OPT_ccc_host_triple)) 172 HostTriple = A->getValue(*Args); 173 if (const Arg *A = Args->getLastArg(options::OPT_ccc_install_dir)) 174 Dir = A->getValue(*Args); 175 176 Host = GetHostInfo(HostTriple); 177 178 // The compilation takes ownership of Args. 179 Compilation *C = new Compilation(*this, *Host->CreateToolChain(*Args), Args); 180 181 // FIXME: This behavior shouldn't be here. 182 if (CCCPrintOptions) { 183 PrintOptions(C->getArgs()); 184 return C; 185 } 186 187 if (!HandleImmediateArgs(*C)) 188 return C; 189 190 // Construct the list of abstract actions to perform for this compilation. We 191 // avoid passing a Compilation here simply to enforce the abstraction that 192 // pipelining is not host or toolchain dependent (other than the driver driver 193 // test). 194 if (Host->useDriverDriver()) 195 BuildUniversalActions(C->getArgs(), C->getActions()); 196 else 197 BuildActions(C->getArgs(), C->getActions()); 198 199 if (CCCPrintActions) { 200 PrintActions(*C); 201 return C; 202 } 203 204 BuildJobs(*C); 205 206 return C; 207} 208 209int Driver::ExecuteCompilation(const Compilation &C) const { 210 // Just print if -### was present. 211 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) { 212 C.PrintJob(llvm::errs(), C.getJobs(), "\n", true); 213 return 0; 214 } 215 216 // If there were errors building the compilation, quit now. 217 if (getDiags().getNumErrors()) 218 return 1; 219 220 const Command *FailingCommand = 0; 221 int Res = C.ExecuteJob(C.getJobs(), FailingCommand); 222 223 // Remove temp files. 224 C.CleanupFileList(C.getTempFiles()); 225 226 // If the compilation failed, remove result files as well. 227 if (Res != 0 && !C.getArgs().hasArg(options::OPT_save_temps)) 228 C.CleanupFileList(C.getResultFiles(), true); 229 230 // Print extra information about abnormal failures, if possible. 231 if (Res) { 232 // This is ad-hoc, but we don't want to be excessively noisy. If the result 233 // status was 1, assume the command failed normally. In particular, if it 234 // was the compiler then assume it gave a reasonable error code. Failures in 235 // other tools are less common, and they generally have worse diagnostics, 236 // so always print the diagnostic there. 237 const Action &Source = FailingCommand->getSource(); 238 bool IsFriendlyTool = (isa<PreprocessJobAction>(Source) || 239 isa<PrecompileJobAction>(Source) || 240 isa<AnalyzeJobAction>(Source) || 241 isa<CompileJobAction>(Source)); 242 243 if (!IsFriendlyTool || Res != 1) { 244 // FIXME: See FIXME above regarding result code interpretation. 245 if (Res < 0) 246 Diag(clang::diag::err_drv_command_signalled) 247 << Source.getClassName() << -Res; 248 else 249 Diag(clang::diag::err_drv_command_failed) 250 << Source.getClassName() << Res; 251 } 252 } 253 254 return Res; 255} 256 257void Driver::PrintOptions(const ArgList &Args) const { 258 unsigned i = 0; 259 for (ArgList::const_iterator it = Args.begin(), ie = Args.end(); 260 it != ie; ++it, ++i) { 261 Arg *A = *it; 262 llvm::errs() << "Option " << i << " - " 263 << "Name: \"" << A->getOption().getName() << "\", " 264 << "Values: {"; 265 for (unsigned j = 0; j < A->getNumValues(); ++j) { 266 if (j) 267 llvm::errs() << ", "; 268 llvm::errs() << '"' << A->getValue(Args, j) << '"'; 269 } 270 llvm::errs() << "}\n"; 271 } 272} 273 274// FIXME: Move -ccc options to real options in the .td file (or eliminate), and 275// then move to using OptTable::PrintHelp. 276void Driver::PrintHelp(bool ShowHidden) const { 277 getOpts().PrintHelp(llvm::outs(), Name.c_str(), DriverTitle.c_str(), 278 ShowHidden); 279} 280 281void Driver::PrintVersion(const Compilation &C, llvm::raw_ostream &OS) const { 282 // FIXME: The following handlers should use a callback mechanism, we don't 283 // know what the client would like to do. 284 OS << getClangFullVersion() << '\n'; 285 const ToolChain &TC = C.getDefaultToolChain(); 286 OS << "Target: " << TC.getTripleString() << '\n'; 287 288 // Print the threading model. 289 // 290 // FIXME: Implement correctly. 291 OS << "Thread model: " << "posix" << '\n'; 292} 293 294bool Driver::HandleImmediateArgs(const Compilation &C) { 295 // The order these options are handled in in gcc is all over the place, but we 296 // don't expect inconsistencies w.r.t. that to matter in practice. 297 298 if (C.getArgs().hasArg(options::OPT_dumpversion)) { 299 llvm::outs() << CLANG_VERSION_STRING "\n"; 300 return false; 301 } 302 303 if (C.getArgs().hasArg(options::OPT__help) || 304 C.getArgs().hasArg(options::OPT__help_hidden)) { 305 PrintHelp(C.getArgs().hasArg(options::OPT__help_hidden)); 306 return false; 307 } 308 309 if (C.getArgs().hasArg(options::OPT__version)) { 310 // Follow gcc behavior and use stdout for --version and stderr for -v. 311 PrintVersion(C, llvm::outs()); 312 return false; 313 } 314 315 if (C.getArgs().hasArg(options::OPT_v) || 316 C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) { 317 PrintVersion(C, llvm::errs()); 318 SuppressMissingInputWarning = true; 319 } 320 321 const ToolChain &TC = C.getDefaultToolChain(); 322 if (C.getArgs().hasArg(options::OPT_print_search_dirs)) { 323 llvm::outs() << "programs: ="; 324 for (ToolChain::path_list::const_iterator it = TC.getProgramPaths().begin(), 325 ie = TC.getProgramPaths().end(); it != ie; ++it) { 326 if (it != TC.getProgramPaths().begin()) 327 llvm::outs() << ':'; 328 llvm::outs() << *it; 329 } 330 llvm::outs() << "\n"; 331 llvm::outs() << "libraries: ="; 332 for (ToolChain::path_list::const_iterator it = TC.getFilePaths().begin(), 333 ie = TC.getFilePaths().end(); it != ie; ++it) { 334 if (it != TC.getFilePaths().begin()) 335 llvm::outs() << ':'; 336 llvm::outs() << *it; 337 } 338 llvm::outs() << "\n"; 339 return false; 340 } 341 342 // FIXME: The following handlers should use a callback mechanism, we don't 343 // know what the client would like to do. 344 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) { 345 llvm::outs() << GetFilePath(A->getValue(C.getArgs()), TC) << "\n"; 346 return false; 347 } 348 349 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_prog_name_EQ)) { 350 llvm::outs() << GetProgramPath(A->getValue(C.getArgs()), TC) << "\n"; 351 return false; 352 } 353 354 if (C.getArgs().hasArg(options::OPT_print_libgcc_file_name)) { 355 llvm::outs() << GetFilePath("libgcc.a", TC) << "\n"; 356 return false; 357 } 358 359 if (C.getArgs().hasArg(options::OPT_print_multi_lib)) { 360 // FIXME: We need tool chain support for this. 361 llvm::outs() << ".;\n"; 362 363 switch (C.getDefaultToolChain().getTriple().getArch()) { 364 default: 365 break; 366 367 case llvm::Triple::x86_64: 368 llvm::outs() << "x86_64;@m64" << "\n"; 369 break; 370 371 case llvm::Triple::ppc64: 372 llvm::outs() << "ppc64;@m64" << "\n"; 373 break; 374 } 375 return false; 376 } 377 378 // FIXME: What is the difference between print-multi-directory and 379 // print-multi-os-directory? 380 if (C.getArgs().hasArg(options::OPT_print_multi_directory) || 381 C.getArgs().hasArg(options::OPT_print_multi_os_directory)) { 382 switch (C.getDefaultToolChain().getTriple().getArch()) { 383 default: 384 case llvm::Triple::x86: 385 case llvm::Triple::ppc: 386 llvm::outs() << "." << "\n"; 387 break; 388 389 case llvm::Triple::x86_64: 390 llvm::outs() << "x86_64" << "\n"; 391 break; 392 393 case llvm::Triple::ppc64: 394 llvm::outs() << "ppc64" << "\n"; 395 break; 396 } 397 return false; 398 } 399 400 return true; 401} 402 403static unsigned PrintActions1(const Compilation &C, Action *A, 404 std::map<Action*, unsigned> &Ids) { 405 if (Ids.count(A)) 406 return Ids[A]; 407 408 std::string str; 409 llvm::raw_string_ostream os(str); 410 411 os << Action::getClassName(A->getKind()) << ", "; 412 if (InputAction *IA = dyn_cast<InputAction>(A)) { 413 os << "\"" << IA->getInputArg().getValue(C.getArgs()) << "\""; 414 } else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) { 415 os << '"' << (BIA->getArchName() ? BIA->getArchName() : 416 C.getDefaultToolChain().getArchName()) << '"' 417 << ", {" << PrintActions1(C, *BIA->begin(), Ids) << "}"; 418 } else { 419 os << "{"; 420 for (Action::iterator it = A->begin(), ie = A->end(); it != ie;) { 421 os << PrintActions1(C, *it, Ids); 422 ++it; 423 if (it != ie) 424 os << ", "; 425 } 426 os << "}"; 427 } 428 429 unsigned Id = Ids.size(); 430 Ids[A] = Id; 431 llvm::errs() << Id << ": " << os.str() << ", " 432 << types::getTypeName(A->getType()) << "\n"; 433 434 return Id; 435} 436 437void Driver::PrintActions(const Compilation &C) const { 438 std::map<Action*, unsigned> Ids; 439 for (ActionList::const_iterator it = C.getActions().begin(), 440 ie = C.getActions().end(); it != ie; ++it) 441 PrintActions1(C, *it, Ids); 442} 443 444void Driver::BuildUniversalActions(const ArgList &Args, 445 ActionList &Actions) const { 446 llvm::PrettyStackTraceString CrashInfo("Building universal build actions"); 447 // Collect the list of architectures. Duplicates are allowed, but should only 448 // be handled once (in the order seen). 449 llvm::StringSet<> ArchNames; 450 llvm::SmallVector<const char *, 4> Archs; 451 for (ArgList::const_iterator it = Args.begin(), ie = Args.end(); 452 it != ie; ++it) { 453 Arg *A = *it; 454 455 if (A->getOption().matches(options::OPT_arch)) { 456 // Validate the option here; we don't save the type here because its 457 // particular spelling may participate in other driver choices. 458 llvm::Triple::ArchType Arch = 459 llvm::Triple::getArchTypeForDarwinArchName(A->getValue(Args)); 460 if (Arch == llvm::Triple::UnknownArch) { 461 Diag(clang::diag::err_drv_invalid_arch_name) 462 << A->getAsString(Args); 463 continue; 464 } 465 466 A->claim(); 467 if (ArchNames.insert(A->getValue(Args))) 468 Archs.push_back(A->getValue(Args)); 469 } 470 } 471 472 // When there is no explicit arch for this platform, make sure we still bind 473 // the architecture (to the default) so that -Xarch_ is handled correctly. 474 if (!Archs.size()) 475 Archs.push_back(0); 476 477 // FIXME: We killed off some others but these aren't yet detected in a 478 // functional manner. If we added information to jobs about which "auxiliary" 479 // files they wrote then we could detect the conflict these cause downstream. 480 if (Archs.size() > 1) { 481 // No recovery needed, the point of this is just to prevent 482 // overwriting the same files. 483 if (const Arg *A = Args.getLastArg(options::OPT_save_temps)) 484 Diag(clang::diag::err_drv_invalid_opt_with_multiple_archs) 485 << A->getAsString(Args); 486 } 487 488 ActionList SingleActions; 489 BuildActions(Args, SingleActions); 490 491 // Add in arch binding and lipo (if necessary) for every top level action. 492 for (unsigned i = 0, e = SingleActions.size(); i != e; ++i) { 493 Action *Act = SingleActions[i]; 494 495 // Make sure we can lipo this kind of output. If not (and it is an actual 496 // output) then we disallow, since we can't create an output file with the 497 // right name without overwriting it. We could remove this oddity by just 498 // changing the output names to include the arch, which would also fix 499 // -save-temps. Compatibility wins for now. 500 501 if (Archs.size() > 1 && !types::canLipoType(Act->getType())) 502 Diag(clang::diag::err_drv_invalid_output_with_multiple_archs) 503 << types::getTypeName(Act->getType()); 504 505 ActionList Inputs; 506 for (unsigned i = 0, e = Archs.size(); i != e; ++i) { 507 Inputs.push_back(new BindArchAction(Act, Archs[i])); 508 if (i != 0) 509 Inputs.back()->setOwnsInputs(false); 510 } 511 512 // Lipo if necessary, we do it this way because we need to set the arch flag 513 // so that -Xarch_ gets overwritten. 514 if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing) 515 Actions.append(Inputs.begin(), Inputs.end()); 516 else 517 Actions.push_back(new LipoJobAction(Inputs, Act->getType())); 518 } 519} 520 521void Driver::BuildActions(const ArgList &Args, ActionList &Actions) const { 522 llvm::PrettyStackTraceString CrashInfo("Building compilation actions"); 523 // Start by constructing the list of inputs and their types. 524 525 // Track the current user specified (-x) input. We also explicitly track the 526 // argument used to set the type; we only want to claim the type when we 527 // actually use it, so we warn about unused -x arguments. 528 types::ID InputType = types::TY_Nothing; 529 Arg *InputTypeArg = 0; 530 531 llvm::SmallVector<std::pair<types::ID, const Arg*>, 16> Inputs; 532 for (ArgList::const_iterator it = Args.begin(), ie = Args.end(); 533 it != ie; ++it) { 534 Arg *A = *it; 535 536 if (isa<InputOption>(A->getOption())) { 537 const char *Value = A->getValue(Args); 538 types::ID Ty = types::TY_INVALID; 539 540 // Infer the input type if necessary. 541 if (InputType == types::TY_Nothing) { 542 // If there was an explicit arg for this, claim it. 543 if (InputTypeArg) 544 InputTypeArg->claim(); 545 546 // stdin must be handled specially. 547 if (memcmp(Value, "-", 2) == 0) { 548 // If running with -E, treat as a C input (this changes the builtin 549 // macros, for example). This may be overridden by -ObjC below. 550 // 551 // Otherwise emit an error but still use a valid type to avoid 552 // spurious errors (e.g., no inputs). 553 if (!Args.hasArgNoClaim(options::OPT_E)) 554 Diag(clang::diag::err_drv_unknown_stdin_type); 555 Ty = types::TY_C; 556 } else { 557 // Otherwise lookup by extension, and fallback to ObjectType if not 558 // found. We use a host hook here because Darwin at least has its own 559 // idea of what .s is. 560 if (const char *Ext = strrchr(Value, '.')) 561 Ty = Host->lookupTypeForExtension(Ext + 1); 562 563 if (Ty == types::TY_INVALID) 564 Ty = types::TY_Object; 565 566 // If the driver is invoked as C++ compiler (like clang++ or c++) it 567 // should autodetect some input files as C++ for g++ compatibility. 568 if (CCCIsCXX) { 569 types::ID OldTy = Ty; 570 Ty = types::lookupCXXTypeForCType(Ty); 571 572 if (Ty != OldTy) 573 Diag(clang::diag::warn_drv_treating_input_as_cxx) 574 << getTypeName(OldTy) << getTypeName(Ty); 575 } 576 } 577 578 // -ObjC and -ObjC++ override the default language, but only for "source 579 // files". We just treat everything that isn't a linker input as a 580 // source file. 581 // 582 // FIXME: Clean this up if we move the phase sequence into the type. 583 if (Ty != types::TY_Object) { 584 if (Args.hasArg(options::OPT_ObjC)) 585 Ty = types::TY_ObjC; 586 else if (Args.hasArg(options::OPT_ObjCXX)) 587 Ty = types::TY_ObjCXX; 588 } 589 } else { 590 assert(InputTypeArg && "InputType set w/o InputTypeArg"); 591 InputTypeArg->claim(); 592 Ty = InputType; 593 } 594 595 // Check that the file exists, if enabled. 596 if (CheckInputsExist && memcmp(Value, "-", 2) != 0 && 597 !llvm::sys::Path(Value).exists()) 598 Diag(clang::diag::err_drv_no_such_file) << A->getValue(Args); 599 else 600 Inputs.push_back(std::make_pair(Ty, A)); 601 602 } else if (A->getOption().isLinkerInput()) { 603 // Just treat as object type, we could make a special type for this if 604 // necessary. 605 Inputs.push_back(std::make_pair(types::TY_Object, A)); 606 607 } else if (A->getOption().matches(options::OPT_x)) { 608 InputTypeArg = A; 609 InputType = types::lookupTypeForTypeSpecifier(A->getValue(Args)); 610 611 // Follow gcc behavior and treat as linker input for invalid -x 612 // options. Its not clear why we shouldn't just revert to unknown; but 613 // this isn't very important, we might as well be bug comatible. 614 if (!InputType) { 615 Diag(clang::diag::err_drv_unknown_language) << A->getValue(Args); 616 InputType = types::TY_Object; 617 } 618 } 619 } 620 621 if (!SuppressMissingInputWarning && Inputs.empty()) { 622 Diag(clang::diag::err_drv_no_input_files); 623 return; 624 } 625 626 // Determine which compilation mode we are in. We look for options which 627 // affect the phase, starting with the earliest phases, and record which 628 // option we used to determine the final phase. 629 Arg *FinalPhaseArg = 0; 630 phases::ID FinalPhase; 631 632 // -{E,M,MM} only run the preprocessor. 633 if ((FinalPhaseArg = Args.getLastArg(options::OPT_E)) || 634 (FinalPhaseArg = Args.getLastArg(options::OPT_M)) || 635 (FinalPhaseArg = Args.getLastArg(options::OPT_MM))) { 636 FinalPhase = phases::Preprocess; 637 638 // -{fsyntax-only,-analyze,emit-ast,S} only run up to the compiler. 639 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_fsyntax_only)) || 640 (FinalPhaseArg = Args.getLastArg(options::OPT_rewrite_objc)) || 641 (FinalPhaseArg = Args.getLastArg(options::OPT__analyze, 642 options::OPT__analyze_auto)) || 643 (FinalPhaseArg = Args.getLastArg(options::OPT_emit_ast)) || 644 (FinalPhaseArg = Args.getLastArg(options::OPT_S))) { 645 FinalPhase = phases::Compile; 646 647 // -c only runs up to the assembler. 648 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_c))) { 649 FinalPhase = phases::Assemble; 650 651 // Otherwise do everything. 652 } else 653 FinalPhase = phases::Link; 654 655 // Reject -Z* at the top level, these options should never have been exposed 656 // by gcc. 657 if (Arg *A = Args.getLastArg(options::OPT_Z_Joined)) 658 Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args); 659 660 // Construct the actions to perform. 661 ActionList LinkerInputs; 662 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 663 types::ID InputType = Inputs[i].first; 664 const Arg *InputArg = Inputs[i].second; 665 666 unsigned NumSteps = types::getNumCompilationPhases(InputType); 667 assert(NumSteps && "Invalid number of steps!"); 668 669 // If the first step comes after the final phase we are doing as part of 670 // this compilation, warn the user about it. 671 phases::ID InitialPhase = types::getCompilationPhase(InputType, 0); 672 if (InitialPhase > FinalPhase) { 673 // Claim here to avoid the more general unused warning. 674 InputArg->claim(); 675 676 // Special case '-E' warning on a previously preprocessed file to make 677 // more sense. 678 if (InitialPhase == phases::Compile && FinalPhase == phases::Preprocess && 679 getPreprocessedType(InputType) == types::TY_INVALID) 680 Diag(clang::diag::warn_drv_preprocessed_input_file_unused) 681 << InputArg->getAsString(Args) 682 << FinalPhaseArg->getOption().getName(); 683 else 684 Diag(clang::diag::warn_drv_input_file_unused) 685 << InputArg->getAsString(Args) 686 << getPhaseName(InitialPhase) 687 << FinalPhaseArg->getOption().getName(); 688 continue; 689 } 690 691 // Build the pipeline for this file. 692 llvm::OwningPtr<Action> Current(new InputAction(*InputArg, InputType)); 693 for (unsigned i = 0; i != NumSteps; ++i) { 694 phases::ID Phase = types::getCompilationPhase(InputType, i); 695 696 // We are done if this step is past what the user requested. 697 if (Phase > FinalPhase) 698 break; 699 700 // Queue linker inputs. 701 if (Phase == phases::Link) { 702 assert(i + 1 == NumSteps && "linking must be final compilation step."); 703 LinkerInputs.push_back(Current.take()); 704 break; 705 } 706 707 // Some types skip the assembler phase (e.g., llvm-bc), but we can't 708 // encode this in the steps because the intermediate type depends on 709 // arguments. Just special case here. 710 if (Phase == phases::Assemble && Current->getType() != types::TY_PP_Asm) 711 continue; 712 713 // Otherwise construct the appropriate action. 714 Current.reset(ConstructPhaseAction(Args, Phase, Current.take())); 715 if (Current->getType() == types::TY_Nothing) 716 break; 717 } 718 719 // If we ended with something, add to the output list. 720 if (Current) 721 Actions.push_back(Current.take()); 722 } 723 724 // Add a link action if necessary. 725 if (!LinkerInputs.empty()) 726 Actions.push_back(new LinkJobAction(LinkerInputs, types::TY_Image)); 727 728 // If we are linking, claim any options which are obviously only used for 729 // compilation. 730 if (FinalPhase == phases::Link) 731 Args.ClaimAllArgs(options::OPT_CompileOnly_Group); 732} 733 734Action *Driver::ConstructPhaseAction(const ArgList &Args, phases::ID Phase, 735 Action *Input) const { 736 llvm::PrettyStackTraceString CrashInfo("Constructing phase actions"); 737 // Build the appropriate action. 738 switch (Phase) { 739 case phases::Link: assert(0 && "link action invalid here."); 740 case phases::Preprocess: { 741 types::ID OutputTy; 742 // -{M, MM} alter the output type. 743 if (Args.hasArg(options::OPT_M) || Args.hasArg(options::OPT_MM)) { 744 OutputTy = types::TY_Dependencies; 745 } else { 746 OutputTy = types::getPreprocessedType(Input->getType()); 747 assert(OutputTy != types::TY_INVALID && 748 "Cannot preprocess this input type!"); 749 } 750 return new PreprocessJobAction(Input, OutputTy); 751 } 752 case phases::Precompile: 753 return new PrecompileJobAction(Input, types::TY_PCH); 754 case phases::Compile: { 755 bool HasO4 = false; 756 if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) 757 HasO4 = A->getOption().matches(options::OPT_O4); 758 759 if (Args.hasArg(options::OPT_fsyntax_only)) { 760 return new CompileJobAction(Input, types::TY_Nothing); 761 } else if (Args.hasArg(options::OPT_rewrite_objc)) { 762 return new CompileJobAction(Input, types::TY_RewrittenObjC); 763 } else if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto)) { 764 return new AnalyzeJobAction(Input, types::TY_Plist); 765 } else if (Args.hasArg(options::OPT_emit_ast)) { 766 return new CompileJobAction(Input, types::TY_AST); 767 } else if (Args.hasArg(options::OPT_emit_llvm) || 768 Args.hasArg(options::OPT_flto) || HasO4) { 769 types::ID Output = 770 Args.hasArg(options::OPT_S) ? types::TY_LLVMAsm : types::TY_LLVMBC; 771 return new CompileJobAction(Input, Output); 772 } else { 773 return new CompileJobAction(Input, types::TY_PP_Asm); 774 } 775 } 776 case phases::Assemble: 777 return new AssembleJobAction(Input, types::TY_Object); 778 } 779 780 assert(0 && "invalid phase in ConstructPhaseAction"); 781 return 0; 782} 783 784void Driver::BuildJobs(Compilation &C) const { 785 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs"); 786 bool SaveTemps = C.getArgs().hasArg(options::OPT_save_temps); 787 bool UsePipes = C.getArgs().hasArg(options::OPT_pipe); 788 789 // FIXME: Pipes are forcibly disabled until we support executing them. 790 if (!CCCPrintBindings) 791 UsePipes = false; 792 793 // -save-temps inhibits pipes. 794 if (SaveTemps && UsePipes) 795 Diag(clang::diag::warn_drv_pipe_ignored_with_save_temps); 796 797 Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o); 798 799 // It is an error to provide a -o option if we are making multiple output 800 // files. 801 if (FinalOutput) { 802 unsigned NumOutputs = 0; 803 for (ActionList::const_iterator it = C.getActions().begin(), 804 ie = C.getActions().end(); it != ie; ++it) 805 if ((*it)->getType() != types::TY_Nothing) 806 ++NumOutputs; 807 808 if (NumOutputs > 1) { 809 Diag(clang::diag::err_drv_output_argument_with_multiple_files); 810 FinalOutput = 0; 811 } 812 } 813 814 for (ActionList::const_iterator it = C.getActions().begin(), 815 ie = C.getActions().end(); it != ie; ++it) { 816 Action *A = *it; 817 818 // If we are linking an image for multiple archs then the linker wants 819 // -arch_multiple and -final_output <final image name>. Unfortunately, this 820 // doesn't fit in cleanly because we have to pass this information down. 821 // 822 // FIXME: This is a hack; find a cleaner way to integrate this into the 823 // process. 824 const char *LinkingOutput = 0; 825 if (isa<LipoJobAction>(A)) { 826 if (FinalOutput) 827 LinkingOutput = FinalOutput->getValue(C.getArgs()); 828 else 829 LinkingOutput = DefaultImageName.c_str(); 830 } 831 832 InputInfo II; 833 BuildJobsForAction(C, A, &C.getDefaultToolChain(), 834 /*BoundArch*/0, 835 /*CanAcceptPipe*/ true, 836 /*AtTopLevel*/ true, 837 /*LinkingOutput*/ LinkingOutput, 838 II); 839 } 840 841 // If the user passed -Qunused-arguments or there were errors, don't warn 842 // about any unused arguments. 843 if (Diags.getNumErrors() || 844 C.getArgs().hasArg(options::OPT_Qunused_arguments)) 845 return; 846 847 // Claim -### here. 848 (void) C.getArgs().hasArg(options::OPT__HASH_HASH_HASH); 849 850 for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end(); 851 it != ie; ++it) { 852 Arg *A = *it; 853 854 // FIXME: It would be nice to be able to send the argument to the 855 // Diagnostic, so that extra values, position, and so on could be printed. 856 if (!A->isClaimed()) { 857 if (A->getOption().hasNoArgumentUnused()) 858 continue; 859 860 // Suppress the warning automatically if this is just a flag, and it is an 861 // instance of an argument we already claimed. 862 const Option &Opt = A->getOption(); 863 if (isa<FlagOption>(Opt)) { 864 bool DuplicateClaimed = false; 865 866 for (arg_iterator it = C.getArgs().filtered_begin(&Opt), 867 ie = C.getArgs().filtered_end(); it != ie; ++it) { 868 if ((*it)->isClaimed()) { 869 DuplicateClaimed = true; 870 break; 871 } 872 } 873 874 if (DuplicateClaimed) 875 continue; 876 } 877 878 Diag(clang::diag::warn_drv_unused_argument) 879 << A->getAsString(C.getArgs()); 880 } 881 } 882} 883 884static const Tool &SelectToolForJob(Compilation &C, const ToolChain *TC, 885 const JobAction *JA, 886 const ActionList *&Inputs) { 887 const Tool *ToolForJob = 0; 888 889 // See if we should look for a compiler with an integrated assembler. We match 890 // bottom up, so what we are actually looking for is an assembler job with a 891 // compiler input. 892 if (C.getArgs().hasArg(options::OPT_integrated_as, 893 options::OPT_no_integrated_as, 894 TC->IsIntegratedAssemblerDefault()) && 895 !C.getArgs().hasArg(options::OPT_save_temps) && 896 isa<AssembleJobAction>(JA) && 897 Inputs->size() == 1 && isa<CompileJobAction>(*Inputs->begin())) { 898 const Tool &Compiler = TC->SelectTool(C,cast<JobAction>(**Inputs->begin())); 899 if (Compiler.hasIntegratedAssembler()) { 900 Inputs = &(*Inputs)[0]->getInputs(); 901 ToolForJob = &Compiler; 902 } 903 } 904 905 // Otherwise use the tool for the current job. 906 if (!ToolForJob) 907 ToolForJob = &TC->SelectTool(C, *JA); 908 909 // See if we should use an integrated preprocessor. We do so when we have 910 // exactly one input, since this is the only use case we care about 911 // (irrelevant since we don't support combine yet). 912 if (Inputs->size() == 1 && isa<PreprocessJobAction>(*Inputs->begin()) && 913 !C.getArgs().hasArg(options::OPT_no_integrated_cpp) && 914 !C.getArgs().hasArg(options::OPT_traditional_cpp) && 915 !C.getArgs().hasArg(options::OPT_save_temps) && 916 ToolForJob->hasIntegratedCPP()) 917 Inputs = &(*Inputs)[0]->getInputs(); 918 919 return *ToolForJob; 920} 921 922void Driver::BuildJobsForAction(Compilation &C, 923 const Action *A, 924 const ToolChain *TC, 925 const char *BoundArch, 926 bool CanAcceptPipe, 927 bool AtTopLevel, 928 const char *LinkingOutput, 929 InputInfo &Result) const { 930 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs"); 931 932 bool UsePipes = C.getArgs().hasArg(options::OPT_pipe); 933 // FIXME: Pipes are forcibly disabled until we support executing them. 934 if (!CCCPrintBindings) 935 UsePipes = false; 936 937 if (const InputAction *IA = dyn_cast<InputAction>(A)) { 938 // FIXME: It would be nice to not claim this here; maybe the old scheme of 939 // just using Args was better? 940 const Arg &Input = IA->getInputArg(); 941 Input.claim(); 942 if (isa<PositionalArg>(Input)) { 943 const char *Name = Input.getValue(C.getArgs()); 944 Result = InputInfo(Name, A->getType(), Name); 945 } else 946 Result = InputInfo(&Input, A->getType(), ""); 947 return; 948 } 949 950 if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) { 951 const ToolChain *TC = &C.getDefaultToolChain(); 952 953 std::string Arch; 954 if (BAA->getArchName()) 955 TC = Host->CreateToolChain(C.getArgs(), BAA->getArchName()); 956 957 BuildJobsForAction(C, *BAA->begin(), TC, BAA->getArchName(), 958 CanAcceptPipe, AtTopLevel, LinkingOutput, Result); 959 return; 960 } 961 962 const ActionList *Inputs = &A->getInputs(); 963 964 const JobAction *JA = cast<JobAction>(A); 965 const Tool &T = SelectToolForJob(C, TC, JA, Inputs); 966 967 // Only use pipes when there is exactly one input. 968 bool TryToUsePipeInput = Inputs->size() == 1 && T.acceptsPipedInput(); 969 InputInfoList InputInfos; 970 for (ActionList::const_iterator it = Inputs->begin(), ie = Inputs->end(); 971 it != ie; ++it) { 972 InputInfo II; 973 BuildJobsForAction(C, *it, TC, BoundArch, TryToUsePipeInput, 974 /*AtTopLevel*/false, LinkingOutput, II); 975 InputInfos.push_back(II); 976 } 977 978 // Determine if we should output to a pipe. 979 bool OutputToPipe = false; 980 if (CanAcceptPipe && T.canPipeOutput()) { 981 // Some actions default to writing to a pipe if they are the top level phase 982 // and there was no user override. 983 // 984 // FIXME: Is there a better way to handle this? 985 if (AtTopLevel) { 986 if (isa<PreprocessJobAction>(A) && !C.getArgs().hasArg(options::OPT_o)) 987 OutputToPipe = true; 988 } else if (UsePipes) 989 OutputToPipe = true; 990 } 991 992 // Figure out where to put the job (pipes). 993 Job *Dest = &C.getJobs(); 994 if (InputInfos[0].isPipe()) { 995 assert(TryToUsePipeInput && "Unrequested pipe!"); 996 assert(InputInfos.size() == 1 && "Unexpected pipe with multiple inputs."); 997 Dest = &InputInfos[0].getPipe(); 998 } 999 1000 // Always use the first input as the base input. 1001 const char *BaseInput = InputInfos[0].getBaseInput(); 1002 1003 // Determine the place to write output to (nothing, pipe, or filename) and 1004 // where to put the new job. 1005 if (JA->getType() == types::TY_Nothing) { 1006 Result = InputInfo(A->getType(), BaseInput); 1007 } else if (OutputToPipe) { 1008 // Append to current piped job or create a new one as appropriate. 1009 PipedJob *PJ = dyn_cast<PipedJob>(Dest); 1010 if (!PJ) { 1011 PJ = new PipedJob(); 1012 // FIXME: Temporary hack so that -ccc-print-bindings work until we have 1013 // pipe support. Please remove later. 1014 if (!CCCPrintBindings) 1015 cast<JobList>(Dest)->addJob(PJ); 1016 Dest = PJ; 1017 } 1018 Result = InputInfo(PJ, A->getType(), BaseInput); 1019 } else { 1020 Result = InputInfo(GetNamedOutputPath(C, *JA, BaseInput, AtTopLevel), 1021 A->getType(), BaseInput); 1022 } 1023 1024 if (CCCPrintBindings) { 1025 llvm::errs() << "# \"" << T.getToolChain().getTripleString() << '"' 1026 << " - \"" << T.getName() << "\", inputs: ["; 1027 for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) { 1028 llvm::errs() << InputInfos[i].getAsString(); 1029 if (i + 1 != e) 1030 llvm::errs() << ", "; 1031 } 1032 llvm::errs() << "], output: " << Result.getAsString() << "\n"; 1033 } else { 1034 T.ConstructJob(C, *JA, *Dest, Result, InputInfos, 1035 C.getArgsForToolChain(TC, BoundArch), LinkingOutput); 1036 } 1037} 1038 1039const char *Driver::GetNamedOutputPath(Compilation &C, 1040 const JobAction &JA, 1041 const char *BaseInput, 1042 bool AtTopLevel) const { 1043 llvm::PrettyStackTraceString CrashInfo("Computing output path"); 1044 // Output to a user requested destination? 1045 if (AtTopLevel) { 1046 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o)) 1047 return C.addResultFile(FinalOutput->getValue(C.getArgs())); 1048 } 1049 1050 // Output to a temporary file? 1051 if (!AtTopLevel && !C.getArgs().hasArg(options::OPT_save_temps)) { 1052 std::string TmpName = 1053 GetTemporaryPath(types::getTypeTempSuffix(JA.getType())); 1054 return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str())); 1055 } 1056 1057 llvm::sys::Path BasePath(BaseInput); 1058 std::string BaseName(BasePath.getLast()); 1059 1060 // Determine what the derived output name should be. 1061 const char *NamedOutput; 1062 if (JA.getType() == types::TY_Image) { 1063 NamedOutput = DefaultImageName.c_str(); 1064 } else { 1065 const char *Suffix = types::getTypeTempSuffix(JA.getType()); 1066 assert(Suffix && "All types used for output should have a suffix."); 1067 1068 std::string::size_type End = std::string::npos; 1069 if (!types::appendSuffixForType(JA.getType())) 1070 End = BaseName.rfind('.'); 1071 std::string Suffixed(BaseName.substr(0, End)); 1072 Suffixed += '.'; 1073 Suffixed += Suffix; 1074 NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str()); 1075 } 1076 1077 // As an annoying special case, PCH generation doesn't strip the pathname. 1078 if (JA.getType() == types::TY_PCH) { 1079 BasePath.eraseComponent(); 1080 if (BasePath.isEmpty()) 1081 BasePath = NamedOutput; 1082 else 1083 BasePath.appendComponent(NamedOutput); 1084 return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str())); 1085 } else { 1086 return C.addResultFile(NamedOutput); 1087 } 1088} 1089 1090std::string Driver::GetFilePath(const char *Name, const ToolChain &TC) const { 1091 const ToolChain::path_list &List = TC.getFilePaths(); 1092 for (ToolChain::path_list::const_iterator 1093 it = List.begin(), ie = List.end(); it != ie; ++it) { 1094 llvm::sys::Path P(*it); 1095 P.appendComponent(Name); 1096 if (P.exists()) 1097 return P.str(); 1098 } 1099 1100 return Name; 1101} 1102 1103std::string Driver::GetProgramPath(const char *Name, const ToolChain &TC, 1104 bool WantFile) const { 1105 const ToolChain::path_list &List = TC.getProgramPaths(); 1106 for (ToolChain::path_list::const_iterator 1107 it = List.begin(), ie = List.end(); it != ie; ++it) { 1108 llvm::sys::Path P(*it); 1109 P.appendComponent(Name); 1110 if (WantFile ? P.exists() : P.canExecute()) 1111 return P.str(); 1112 } 1113 1114 // If all else failed, search the path. 1115 llvm::sys::Path P(llvm::sys::Program::FindProgramByName(Name)); 1116 if (!P.empty()) 1117 return P.str(); 1118 1119 return Name; 1120} 1121 1122std::string Driver::GetTemporaryPath(const char *Suffix) const { 1123 // FIXME: This is lame; sys::Path should provide this function (in particular, 1124 // it should know how to find the temporary files dir). 1125 std::string Error; 1126 const char *TmpDir = ::getenv("TMPDIR"); 1127 if (!TmpDir) 1128 TmpDir = ::getenv("TEMP"); 1129 if (!TmpDir) 1130 TmpDir = ::getenv("TMP"); 1131 if (!TmpDir) 1132 TmpDir = "/tmp"; 1133 llvm::sys::Path P(TmpDir); 1134 P.appendComponent("cc"); 1135 if (P.makeUnique(false, &Error)) { 1136 Diag(clang::diag::err_drv_unable_to_make_temp) << Error; 1137 return ""; 1138 } 1139 1140 // FIXME: Grumble, makeUnique sometimes leaves the file around!? PR3837. 1141 P.eraseFromDisk(false, 0); 1142 1143 P.appendSuffix(Suffix); 1144 return P.str(); 1145} 1146 1147const HostInfo *Driver::GetHostInfo(const char *TripleStr) const { 1148 llvm::PrettyStackTraceString CrashInfo("Constructing host"); 1149 llvm::Triple Triple(TripleStr); 1150 1151 // TCE is an osless target 1152 if (Triple.getArchName() == "tce") 1153 return createTCEHostInfo(*this, Triple); 1154 1155 switch (Triple.getOS()) { 1156 case llvm::Triple::AuroraUX: 1157 return createAuroraUXHostInfo(*this, Triple); 1158 case llvm::Triple::Darwin: 1159 return createDarwinHostInfo(*this, Triple); 1160 case llvm::Triple::DragonFly: 1161 return createDragonFlyHostInfo(*this, Triple); 1162 case llvm::Triple::OpenBSD: 1163 return createOpenBSDHostInfo(*this, Triple); 1164 case llvm::Triple::FreeBSD: 1165 return createFreeBSDHostInfo(*this, Triple); 1166 case llvm::Triple::Linux: 1167 return createLinuxHostInfo(*this, Triple); 1168 default: 1169 return createUnknownHostInfo(*this, Triple); 1170 } 1171} 1172 1173bool Driver::ShouldUseClangCompiler(const Compilation &C, const JobAction &JA, 1174 const llvm::Triple &Triple) const { 1175 // Check if user requested no clang, or clang doesn't understand this type (we 1176 // only handle single inputs for now). 1177 if (!CCCUseClang || JA.size() != 1 || 1178 !types::isAcceptedByClang((*JA.begin())->getType())) 1179 return false; 1180 1181 // Otherwise make sure this is an action clang understands. 1182 if (isa<PreprocessJobAction>(JA)) { 1183 if (!CCCUseClangCPP) { 1184 Diag(clang::diag::warn_drv_not_using_clang_cpp); 1185 return false; 1186 } 1187 } else if (!isa<PrecompileJobAction>(JA) && !isa<CompileJobAction>(JA)) 1188 return false; 1189 1190 // Use clang for C++? 1191 if (!CCCUseClangCXX && types::isCXX((*JA.begin())->getType())) { 1192 Diag(clang::diag::warn_drv_not_using_clang_cxx); 1193 return false; 1194 } 1195 1196 // Always use clang for precompiling, AST generation, and rewriting, 1197 // regardless of archs. 1198 if (isa<PrecompileJobAction>(JA) || JA.getType() == types::TY_AST || 1199 JA.getType() == types::TY_RewrittenObjC) 1200 return true; 1201 1202 // Finally, don't use clang if this isn't one of the user specified archs to 1203 // build. 1204 if (!CCCClangArchs.empty() && !CCCClangArchs.count(Triple.getArch())) { 1205 Diag(clang::diag::warn_drv_not_using_clang_arch) << Triple.getArchName(); 1206 return false; 1207 } 1208 1209 return true; 1210} 1211 1212/// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the 1213/// grouped values as integers. Numbers which are not provided are set to 0. 1214/// 1215/// \return True if the entire string was parsed (9.2), or all groups were 1216/// parsed (10.3.5extrastuff). 1217bool Driver::GetReleaseVersion(const char *Str, unsigned &Major, 1218 unsigned &Minor, unsigned &Micro, 1219 bool &HadExtra) { 1220 HadExtra = false; 1221 1222 Major = Minor = Micro = 0; 1223 if (*Str == '\0') 1224 return true; 1225 1226 char *End; 1227 Major = (unsigned) strtol(Str, &End, 10); 1228 if (*Str != '\0' && *End == '\0') 1229 return true; 1230 if (*End != '.') 1231 return false; 1232 1233 Str = End+1; 1234 Minor = (unsigned) strtol(Str, &End, 10); 1235 if (*Str != '\0' && *End == '\0') 1236 return true; 1237 if (*End != '.') 1238 return false; 1239 1240 Str = End+1; 1241 Micro = (unsigned) strtol(Str, &End, 10); 1242 if (*Str != '\0' && *End == '\0') 1243 return true; 1244 if (Str == End) 1245 return false; 1246 HadExtra = true; 1247 return true; 1248} 1249