Driver.cpp revision 204643
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])); 508 509 // Lipo if necessary, we do it this way because we need to set the arch flag 510 // so that -Xarch_ gets overwritten. 511 if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing) 512 Actions.append(Inputs.begin(), Inputs.end()); 513 else 514 Actions.push_back(new LipoJobAction(Inputs, Act->getType())); 515 } 516} 517 518void Driver::BuildActions(const ArgList &Args, ActionList &Actions) const { 519 llvm::PrettyStackTraceString CrashInfo("Building compilation actions"); 520 // Start by constructing the list of inputs and their types. 521 522 // Track the current user specified (-x) input. We also explicitly track the 523 // argument used to set the type; we only want to claim the type when we 524 // actually use it, so we warn about unused -x arguments. 525 types::ID InputType = types::TY_Nothing; 526 Arg *InputTypeArg = 0; 527 528 llvm::SmallVector<std::pair<types::ID, const Arg*>, 16> Inputs; 529 for (ArgList::const_iterator it = Args.begin(), ie = Args.end(); 530 it != ie; ++it) { 531 Arg *A = *it; 532 533 if (isa<InputOption>(A->getOption())) { 534 const char *Value = A->getValue(Args); 535 types::ID Ty = types::TY_INVALID; 536 537 // Infer the input type if necessary. 538 if (InputType == types::TY_Nothing) { 539 // If there was an explicit arg for this, claim it. 540 if (InputTypeArg) 541 InputTypeArg->claim(); 542 543 // stdin must be handled specially. 544 if (memcmp(Value, "-", 2) == 0) { 545 // If running with -E, treat as a C input (this changes the builtin 546 // macros, for example). This may be overridden by -ObjC below. 547 // 548 // Otherwise emit an error but still use a valid type to avoid 549 // spurious errors (e.g., no inputs). 550 if (!Args.hasArgNoClaim(options::OPT_E)) 551 Diag(clang::diag::err_drv_unknown_stdin_type); 552 Ty = types::TY_C; 553 } else { 554 // Otherwise lookup by extension, and fallback to ObjectType if not 555 // found. We use a host hook here because Darwin at least has its own 556 // idea of what .s is. 557 if (const char *Ext = strrchr(Value, '.')) 558 Ty = Host->lookupTypeForExtension(Ext + 1); 559 560 if (Ty == types::TY_INVALID) 561 Ty = types::TY_Object; 562 563 // If the driver is invoked as C++ compiler (like clang++ or c++) it 564 // should autodetect some input files as C++ for g++ compatibility. 565 if (CCCIsCXX) { 566 types::ID OldTy = Ty; 567 Ty = types::lookupCXXTypeForCType(Ty); 568 569 if (Ty != OldTy) 570 Diag(clang::diag::warn_drv_treating_input_as_cxx) 571 << getTypeName(OldTy) << getTypeName(Ty); 572 } 573 } 574 575 // -ObjC and -ObjC++ override the default language, but only for "source 576 // files". We just treat everything that isn't a linker input as a 577 // source file. 578 // 579 // FIXME: Clean this up if we move the phase sequence into the type. 580 if (Ty != types::TY_Object) { 581 if (Args.hasArg(options::OPT_ObjC)) 582 Ty = types::TY_ObjC; 583 else if (Args.hasArg(options::OPT_ObjCXX)) 584 Ty = types::TY_ObjCXX; 585 } 586 } else { 587 assert(InputTypeArg && "InputType set w/o InputTypeArg"); 588 InputTypeArg->claim(); 589 Ty = InputType; 590 } 591 592 // Check that the file exists, if enabled. 593 if (CheckInputsExist && memcmp(Value, "-", 2) != 0 && 594 !llvm::sys::Path(Value).exists()) 595 Diag(clang::diag::err_drv_no_such_file) << A->getValue(Args); 596 else 597 Inputs.push_back(std::make_pair(Ty, A)); 598 599 } else if (A->getOption().isLinkerInput()) { 600 // Just treat as object type, we could make a special type for this if 601 // necessary. 602 Inputs.push_back(std::make_pair(types::TY_Object, A)); 603 604 } else if (A->getOption().matches(options::OPT_x)) { 605 InputTypeArg = A; 606 InputType = types::lookupTypeForTypeSpecifier(A->getValue(Args)); 607 608 // Follow gcc behavior and treat as linker input for invalid -x 609 // options. Its not clear why we shouldn't just revert to unknown; but 610 // this isn't very important, we might as well be bug comatible. 611 if (!InputType) { 612 Diag(clang::diag::err_drv_unknown_language) << A->getValue(Args); 613 InputType = types::TY_Object; 614 } 615 } 616 } 617 618 if (!SuppressMissingInputWarning && Inputs.empty()) { 619 Diag(clang::diag::err_drv_no_input_files); 620 return; 621 } 622 623 // Determine which compilation mode we are in. We look for options which 624 // affect the phase, starting with the earliest phases, and record which 625 // option we used to determine the final phase. 626 Arg *FinalPhaseArg = 0; 627 phases::ID FinalPhase; 628 629 // -{E,M,MM} only run the preprocessor. 630 if ((FinalPhaseArg = Args.getLastArg(options::OPT_E)) || 631 (FinalPhaseArg = Args.getLastArg(options::OPT_M)) || 632 (FinalPhaseArg = Args.getLastArg(options::OPT_MM))) { 633 FinalPhase = phases::Preprocess; 634 635 // -{fsyntax-only,-analyze,emit-ast,S} only run up to the compiler. 636 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_fsyntax_only)) || 637 (FinalPhaseArg = Args.getLastArg(options::OPT_rewrite_objc)) || 638 (FinalPhaseArg = Args.getLastArg(options::OPT__analyze, 639 options::OPT__analyze_auto)) || 640 (FinalPhaseArg = Args.getLastArg(options::OPT_emit_ast)) || 641 (FinalPhaseArg = Args.getLastArg(options::OPT_S))) { 642 FinalPhase = phases::Compile; 643 644 // -c only runs up to the assembler. 645 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_c))) { 646 FinalPhase = phases::Assemble; 647 648 // Otherwise do everything. 649 } else 650 FinalPhase = phases::Link; 651 652 // Reject -Z* at the top level, these options should never have been exposed 653 // by gcc. 654 if (Arg *A = Args.getLastArg(options::OPT_Z_Joined)) 655 Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args); 656 657 // Construct the actions to perform. 658 ActionList LinkerInputs; 659 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 660 types::ID InputType = Inputs[i].first; 661 const Arg *InputArg = Inputs[i].second; 662 663 unsigned NumSteps = types::getNumCompilationPhases(InputType); 664 assert(NumSteps && "Invalid number of steps!"); 665 666 // If the first step comes after the final phase we are doing as part of 667 // this compilation, warn the user about it. 668 phases::ID InitialPhase = types::getCompilationPhase(InputType, 0); 669 if (InitialPhase > FinalPhase) { 670 // Claim here to avoid the more general unused warning. 671 InputArg->claim(); 672 673 // Special case '-E' warning on a previously preprocessed file to make 674 // more sense. 675 if (InitialPhase == phases::Compile && FinalPhase == phases::Preprocess && 676 getPreprocessedType(InputType) == types::TY_INVALID) 677 Diag(clang::diag::warn_drv_preprocessed_input_file_unused) 678 << InputArg->getAsString(Args) 679 << FinalPhaseArg->getOption().getName(); 680 else 681 Diag(clang::diag::warn_drv_input_file_unused) 682 << InputArg->getAsString(Args) 683 << getPhaseName(InitialPhase) 684 << FinalPhaseArg->getOption().getName(); 685 continue; 686 } 687 688 // Build the pipeline for this file. 689 llvm::OwningPtr<Action> Current(new InputAction(*InputArg, InputType)); 690 for (unsigned i = 0; i != NumSteps; ++i) { 691 phases::ID Phase = types::getCompilationPhase(InputType, i); 692 693 // We are done if this step is past what the user requested. 694 if (Phase > FinalPhase) 695 break; 696 697 // Queue linker inputs. 698 if (Phase == phases::Link) { 699 assert(i + 1 == NumSteps && "linking must be final compilation step."); 700 LinkerInputs.push_back(Current.take()); 701 break; 702 } 703 704 // Some types skip the assembler phase (e.g., llvm-bc), but we can't 705 // encode this in the steps because the intermediate type depends on 706 // arguments. Just special case here. 707 if (Phase == phases::Assemble && Current->getType() != types::TY_PP_Asm) 708 continue; 709 710 // Otherwise construct the appropriate action. 711 Current.reset(ConstructPhaseAction(Args, Phase, Current.take())); 712 if (Current->getType() == types::TY_Nothing) 713 break; 714 } 715 716 // If we ended with something, add to the output list. 717 if (Current) 718 Actions.push_back(Current.take()); 719 } 720 721 // Add a link action if necessary. 722 if (!LinkerInputs.empty()) 723 Actions.push_back(new LinkJobAction(LinkerInputs, types::TY_Image)); 724 725 // If we are linking, claim any options which are obviously only used for 726 // compilation. 727 if (FinalPhase == phases::Link) 728 Args.ClaimAllArgs(options::OPT_CompileOnly_Group); 729} 730 731Action *Driver::ConstructPhaseAction(const ArgList &Args, phases::ID Phase, 732 Action *Input) const { 733 llvm::PrettyStackTraceString CrashInfo("Constructing phase actions"); 734 // Build the appropriate action. 735 switch (Phase) { 736 case phases::Link: assert(0 && "link action invalid here."); 737 case phases::Preprocess: { 738 types::ID OutputTy; 739 // -{M, MM} alter the output type. 740 if (Args.hasArg(options::OPT_M) || Args.hasArg(options::OPT_MM)) { 741 OutputTy = types::TY_Dependencies; 742 } else { 743 OutputTy = types::getPreprocessedType(Input->getType()); 744 assert(OutputTy != types::TY_INVALID && 745 "Cannot preprocess this input type!"); 746 } 747 return new PreprocessJobAction(Input, OutputTy); 748 } 749 case phases::Precompile: 750 return new PrecompileJobAction(Input, types::TY_PCH); 751 case phases::Compile: { 752 bool HasO4 = false; 753 if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) 754 HasO4 = A->getOption().matches(options::OPT_O4); 755 756 if (Args.hasArg(options::OPT_fsyntax_only)) { 757 return new CompileJobAction(Input, types::TY_Nothing); 758 } else if (Args.hasArg(options::OPT_rewrite_objc)) { 759 return new CompileJobAction(Input, types::TY_RewrittenObjC); 760 } else if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto)) { 761 return new AnalyzeJobAction(Input, types::TY_Plist); 762 } else if (Args.hasArg(options::OPT_emit_ast)) { 763 return new CompileJobAction(Input, types::TY_AST); 764 } else if (Args.hasArg(options::OPT_emit_llvm) || 765 Args.hasArg(options::OPT_flto) || HasO4) { 766 types::ID Output = 767 Args.hasArg(options::OPT_S) ? types::TY_LLVMAsm : types::TY_LLVMBC; 768 return new CompileJobAction(Input, Output); 769 } else { 770 return new CompileJobAction(Input, types::TY_PP_Asm); 771 } 772 } 773 case phases::Assemble: 774 return new AssembleJobAction(Input, types::TY_Object); 775 } 776 777 assert(0 && "invalid phase in ConstructPhaseAction"); 778 return 0; 779} 780 781void Driver::BuildJobs(Compilation &C) const { 782 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs"); 783 bool SaveTemps = C.getArgs().hasArg(options::OPT_save_temps); 784 bool UsePipes = C.getArgs().hasArg(options::OPT_pipe); 785 786 // FIXME: Pipes are forcibly disabled until we support executing them. 787 if (!CCCPrintBindings) 788 UsePipes = false; 789 790 // -save-temps inhibits pipes. 791 if (SaveTemps && UsePipes) 792 Diag(clang::diag::warn_drv_pipe_ignored_with_save_temps); 793 794 Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o); 795 796 // It is an error to provide a -o option if we are making multiple output 797 // files. 798 if (FinalOutput) { 799 unsigned NumOutputs = 0; 800 for (ActionList::const_iterator it = C.getActions().begin(), 801 ie = C.getActions().end(); it != ie; ++it) 802 if ((*it)->getType() != types::TY_Nothing) 803 ++NumOutputs; 804 805 if (NumOutputs > 1) { 806 Diag(clang::diag::err_drv_output_argument_with_multiple_files); 807 FinalOutput = 0; 808 } 809 } 810 811 for (ActionList::const_iterator it = C.getActions().begin(), 812 ie = C.getActions().end(); it != ie; ++it) { 813 Action *A = *it; 814 815 // If we are linking an image for multiple archs then the linker wants 816 // -arch_multiple and -final_output <final image name>. Unfortunately, this 817 // doesn't fit in cleanly because we have to pass this information down. 818 // 819 // FIXME: This is a hack; find a cleaner way to integrate this into the 820 // process. 821 const char *LinkingOutput = 0; 822 if (isa<LipoJobAction>(A)) { 823 if (FinalOutput) 824 LinkingOutput = FinalOutput->getValue(C.getArgs()); 825 else 826 LinkingOutput = DefaultImageName.c_str(); 827 } 828 829 InputInfo II; 830 BuildJobsForAction(C, A, &C.getDefaultToolChain(), 831 /*BoundArch*/0, 832 /*CanAcceptPipe*/ true, 833 /*AtTopLevel*/ true, 834 /*LinkingOutput*/ LinkingOutput, 835 II); 836 } 837 838 // If the user passed -Qunused-arguments or there were errors, don't warn 839 // about any unused arguments. 840 if (Diags.getNumErrors() || 841 C.getArgs().hasArg(options::OPT_Qunused_arguments)) 842 return; 843 844 // Claim -### here. 845 (void) C.getArgs().hasArg(options::OPT__HASH_HASH_HASH); 846 847 for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end(); 848 it != ie; ++it) { 849 Arg *A = *it; 850 851 // FIXME: It would be nice to be able to send the argument to the 852 // Diagnostic, so that extra values, position, and so on could be printed. 853 if (!A->isClaimed()) { 854 if (A->getOption().hasNoArgumentUnused()) 855 continue; 856 857 // Suppress the warning automatically if this is just a flag, and it is an 858 // instance of an argument we already claimed. 859 const Option &Opt = A->getOption(); 860 if (isa<FlagOption>(Opt)) { 861 bool DuplicateClaimed = false; 862 863 for (arg_iterator it = C.getArgs().filtered_begin(&Opt), 864 ie = C.getArgs().filtered_end(); it != ie; ++it) { 865 if ((*it)->isClaimed()) { 866 DuplicateClaimed = true; 867 break; 868 } 869 } 870 871 if (DuplicateClaimed) 872 continue; 873 } 874 875 Diag(clang::diag::warn_drv_unused_argument) 876 << A->getAsString(C.getArgs()); 877 } 878 } 879} 880 881static const Tool &SelectToolForJob(Compilation &C, const ToolChain *TC, 882 const JobAction *JA, 883 const ActionList *&Inputs) { 884 const Tool *ToolForJob = 0; 885 886 // See if we should look for a compiler with an integrated assembler. We match 887 // bottom up, so what we are actually looking for is an assembler job with a 888 // compiler input. 889 if (C.getArgs().hasArg(options::OPT_integrated_as, 890 options::OPT_no_integrated_as, 891 TC->IsIntegratedAssemblerDefault()) && 892 !C.getArgs().hasArg(options::OPT_save_temps) && 893 isa<AssembleJobAction>(JA) && 894 Inputs->size() == 1 && isa<CompileJobAction>(*Inputs->begin())) { 895 const Tool &Compiler = TC->SelectTool(C,cast<JobAction>(**Inputs->begin())); 896 if (Compiler.hasIntegratedAssembler()) { 897 Inputs = &(*Inputs)[0]->getInputs(); 898 ToolForJob = &Compiler; 899 } 900 } 901 902 // Otherwise use the tool for the current job. 903 if (!ToolForJob) 904 ToolForJob = &TC->SelectTool(C, *JA); 905 906 // See if we should use an integrated preprocessor. We do so when we have 907 // exactly one input, since this is the only use case we care about 908 // (irrelevant since we don't support combine yet). 909 if (Inputs->size() == 1 && isa<PreprocessJobAction>(*Inputs->begin()) && 910 !C.getArgs().hasArg(options::OPT_no_integrated_cpp) && 911 !C.getArgs().hasArg(options::OPT_traditional_cpp) && 912 !C.getArgs().hasArg(options::OPT_save_temps) && 913 ToolForJob->hasIntegratedCPP()) 914 Inputs = &(*Inputs)[0]->getInputs(); 915 916 return *ToolForJob; 917} 918 919void Driver::BuildJobsForAction(Compilation &C, 920 const Action *A, 921 const ToolChain *TC, 922 const char *BoundArch, 923 bool CanAcceptPipe, 924 bool AtTopLevel, 925 const char *LinkingOutput, 926 InputInfo &Result) const { 927 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs"); 928 929 bool UsePipes = C.getArgs().hasArg(options::OPT_pipe); 930 // FIXME: Pipes are forcibly disabled until we support executing them. 931 if (!CCCPrintBindings) 932 UsePipes = false; 933 934 if (const InputAction *IA = dyn_cast<InputAction>(A)) { 935 // FIXME: It would be nice to not claim this here; maybe the old scheme of 936 // just using Args was better? 937 const Arg &Input = IA->getInputArg(); 938 Input.claim(); 939 if (isa<PositionalArg>(Input)) { 940 const char *Name = Input.getValue(C.getArgs()); 941 Result = InputInfo(Name, A->getType(), Name); 942 } else 943 Result = InputInfo(&Input, A->getType(), ""); 944 return; 945 } 946 947 if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) { 948 const ToolChain *TC = &C.getDefaultToolChain(); 949 950 std::string Arch; 951 if (BAA->getArchName()) 952 TC = Host->CreateToolChain(C.getArgs(), BAA->getArchName()); 953 954 BuildJobsForAction(C, *BAA->begin(), TC, BAA->getArchName(), 955 CanAcceptPipe, AtTopLevel, LinkingOutput, Result); 956 return; 957 } 958 959 const ActionList *Inputs = &A->getInputs(); 960 961 const JobAction *JA = cast<JobAction>(A); 962 const Tool &T = SelectToolForJob(C, TC, JA, Inputs); 963 964 // Only use pipes when there is exactly one input. 965 bool TryToUsePipeInput = Inputs->size() == 1 && T.acceptsPipedInput(); 966 InputInfoList InputInfos; 967 for (ActionList::const_iterator it = Inputs->begin(), ie = Inputs->end(); 968 it != ie; ++it) { 969 InputInfo II; 970 BuildJobsForAction(C, *it, TC, BoundArch, TryToUsePipeInput, 971 /*AtTopLevel*/false, LinkingOutput, II); 972 InputInfos.push_back(II); 973 } 974 975 // Determine if we should output to a pipe. 976 bool OutputToPipe = false; 977 if (CanAcceptPipe && T.canPipeOutput()) { 978 // Some actions default to writing to a pipe if they are the top level phase 979 // and there was no user override. 980 // 981 // FIXME: Is there a better way to handle this? 982 if (AtTopLevel) { 983 if (isa<PreprocessJobAction>(A) && !C.getArgs().hasArg(options::OPT_o)) 984 OutputToPipe = true; 985 } else if (UsePipes) 986 OutputToPipe = true; 987 } 988 989 // Figure out where to put the job (pipes). 990 Job *Dest = &C.getJobs(); 991 if (InputInfos[0].isPipe()) { 992 assert(TryToUsePipeInput && "Unrequested pipe!"); 993 assert(InputInfos.size() == 1 && "Unexpected pipe with multiple inputs."); 994 Dest = &InputInfos[0].getPipe(); 995 } 996 997 // Always use the first input as the base input. 998 const char *BaseInput = InputInfos[0].getBaseInput(); 999 1000 // Determine the place to write output to (nothing, pipe, or filename) and 1001 // where to put the new job. 1002 if (JA->getType() == types::TY_Nothing) { 1003 Result = InputInfo(A->getType(), BaseInput); 1004 } else if (OutputToPipe) { 1005 // Append to current piped job or create a new one as appropriate. 1006 PipedJob *PJ = dyn_cast<PipedJob>(Dest); 1007 if (!PJ) { 1008 PJ = new PipedJob(); 1009 // FIXME: Temporary hack so that -ccc-print-bindings work until we have 1010 // pipe support. Please remove later. 1011 if (!CCCPrintBindings) 1012 cast<JobList>(Dest)->addJob(PJ); 1013 Dest = PJ; 1014 } 1015 Result = InputInfo(PJ, A->getType(), BaseInput); 1016 } else { 1017 Result = InputInfo(GetNamedOutputPath(C, *JA, BaseInput, AtTopLevel), 1018 A->getType(), BaseInput); 1019 } 1020 1021 if (CCCPrintBindings) { 1022 llvm::errs() << "# \"" << T.getToolChain().getTripleString() << '"' 1023 << " - \"" << T.getName() << "\", inputs: ["; 1024 for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) { 1025 llvm::errs() << InputInfos[i].getAsString(); 1026 if (i + 1 != e) 1027 llvm::errs() << ", "; 1028 } 1029 llvm::errs() << "], output: " << Result.getAsString() << "\n"; 1030 } else { 1031 T.ConstructJob(C, *JA, *Dest, Result, InputInfos, 1032 C.getArgsForToolChain(TC, BoundArch), LinkingOutput); 1033 } 1034} 1035 1036const char *Driver::GetNamedOutputPath(Compilation &C, 1037 const JobAction &JA, 1038 const char *BaseInput, 1039 bool AtTopLevel) const { 1040 llvm::PrettyStackTraceString CrashInfo("Computing output path"); 1041 // Output to a user requested destination? 1042 if (AtTopLevel) { 1043 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o)) 1044 return C.addResultFile(FinalOutput->getValue(C.getArgs())); 1045 } 1046 1047 // Output to a temporary file? 1048 if (!AtTopLevel && !C.getArgs().hasArg(options::OPT_save_temps)) { 1049 std::string TmpName = 1050 GetTemporaryPath(types::getTypeTempSuffix(JA.getType())); 1051 return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str())); 1052 } 1053 1054 llvm::sys::Path BasePath(BaseInput); 1055 std::string BaseName(BasePath.getLast()); 1056 1057 // Determine what the derived output name should be. 1058 const char *NamedOutput; 1059 if (JA.getType() == types::TY_Image) { 1060 NamedOutput = DefaultImageName.c_str(); 1061 } else { 1062 const char *Suffix = types::getTypeTempSuffix(JA.getType()); 1063 assert(Suffix && "All types used for output should have a suffix."); 1064 1065 std::string::size_type End = std::string::npos; 1066 if (!types::appendSuffixForType(JA.getType())) 1067 End = BaseName.rfind('.'); 1068 std::string Suffixed(BaseName.substr(0, End)); 1069 Suffixed += '.'; 1070 Suffixed += Suffix; 1071 NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str()); 1072 } 1073 1074 // As an annoying special case, PCH generation doesn't strip the pathname. 1075 if (JA.getType() == types::TY_PCH) { 1076 BasePath.eraseComponent(); 1077 if (BasePath.isEmpty()) 1078 BasePath = NamedOutput; 1079 else 1080 BasePath.appendComponent(NamedOutput); 1081 return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str())); 1082 } else { 1083 return C.addResultFile(NamedOutput); 1084 } 1085} 1086 1087std::string Driver::GetFilePath(const char *Name, const ToolChain &TC) const { 1088 const ToolChain::path_list &List = TC.getFilePaths(); 1089 for (ToolChain::path_list::const_iterator 1090 it = List.begin(), ie = List.end(); it != ie; ++it) { 1091 llvm::sys::Path P(*it); 1092 P.appendComponent(Name); 1093 if (P.exists()) 1094 return P.str(); 1095 } 1096 1097 return Name; 1098} 1099 1100std::string Driver::GetProgramPath(const char *Name, const ToolChain &TC, 1101 bool WantFile) const { 1102 const ToolChain::path_list &List = TC.getProgramPaths(); 1103 for (ToolChain::path_list::const_iterator 1104 it = List.begin(), ie = List.end(); it != ie; ++it) { 1105 llvm::sys::Path P(*it); 1106 P.appendComponent(Name); 1107 if (WantFile ? P.exists() : P.canExecute()) 1108 return P.str(); 1109 } 1110 1111 // If all else failed, search the path. 1112 llvm::sys::Path P(llvm::sys::Program::FindProgramByName(Name)); 1113 if (!P.empty()) 1114 return P.str(); 1115 1116 return Name; 1117} 1118 1119std::string Driver::GetTemporaryPath(const char *Suffix) const { 1120 // FIXME: This is lame; sys::Path should provide this function (in particular, 1121 // it should know how to find the temporary files dir). 1122 std::string Error; 1123 const char *TmpDir = ::getenv("TMPDIR"); 1124 if (!TmpDir) 1125 TmpDir = ::getenv("TEMP"); 1126 if (!TmpDir) 1127 TmpDir = ::getenv("TMP"); 1128 if (!TmpDir) 1129 TmpDir = "/tmp"; 1130 llvm::sys::Path P(TmpDir); 1131 P.appendComponent("cc"); 1132 if (P.makeUnique(false, &Error)) { 1133 Diag(clang::diag::err_drv_unable_to_make_temp) << Error; 1134 return ""; 1135 } 1136 1137 // FIXME: Grumble, makeUnique sometimes leaves the file around!? PR3837. 1138 P.eraseFromDisk(false, 0); 1139 1140 P.appendSuffix(Suffix); 1141 return P.str(); 1142} 1143 1144const HostInfo *Driver::GetHostInfo(const char *TripleStr) const { 1145 llvm::PrettyStackTraceString CrashInfo("Constructing host"); 1146 llvm::Triple Triple(TripleStr); 1147 1148 switch (Triple.getOS()) { 1149 case llvm::Triple::AuroraUX: 1150 return createAuroraUXHostInfo(*this, Triple); 1151 case llvm::Triple::Darwin: 1152 return createDarwinHostInfo(*this, Triple); 1153 case llvm::Triple::DragonFly: 1154 return createDragonFlyHostInfo(*this, Triple); 1155 case llvm::Triple::OpenBSD: 1156 return createOpenBSDHostInfo(*this, Triple); 1157 case llvm::Triple::FreeBSD: 1158 return createFreeBSDHostInfo(*this, Triple); 1159 case llvm::Triple::Linux: 1160 return createLinuxHostInfo(*this, Triple); 1161 default: 1162 return createUnknownHostInfo(*this, Triple); 1163 } 1164} 1165 1166bool Driver::ShouldUseClangCompiler(const Compilation &C, const JobAction &JA, 1167 const llvm::Triple &Triple) const { 1168 // Check if user requested no clang, or clang doesn't understand this type (we 1169 // only handle single inputs for now). 1170 if (!CCCUseClang || JA.size() != 1 || 1171 !types::isAcceptedByClang((*JA.begin())->getType())) 1172 return false; 1173 1174 // Otherwise make sure this is an action clang understands. 1175 if (isa<PreprocessJobAction>(JA)) { 1176 if (!CCCUseClangCPP) { 1177 Diag(clang::diag::warn_drv_not_using_clang_cpp); 1178 return false; 1179 } 1180 } else if (!isa<PrecompileJobAction>(JA) && !isa<CompileJobAction>(JA)) 1181 return false; 1182 1183 // Use clang for C++? 1184 if (!CCCUseClangCXX && types::isCXX((*JA.begin())->getType())) { 1185 Diag(clang::diag::warn_drv_not_using_clang_cxx); 1186 return false; 1187 } 1188 1189 // Always use clang for precompiling, AST generation, and rewriting, 1190 // regardless of archs. 1191 if (isa<PrecompileJobAction>(JA) || JA.getType() == types::TY_AST || 1192 JA.getType() == types::TY_RewrittenObjC) 1193 return true; 1194 1195 // Finally, don't use clang if this isn't one of the user specified archs to 1196 // build. 1197 if (!CCCClangArchs.empty() && !CCCClangArchs.count(Triple.getArch())) { 1198 Diag(clang::diag::warn_drv_not_using_clang_arch) << Triple.getArchName(); 1199 return false; 1200 } 1201 1202 return true; 1203} 1204 1205/// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the 1206/// grouped values as integers. Numbers which are not provided are set to 0. 1207/// 1208/// \return True if the entire string was parsed (9.2), or all groups were 1209/// parsed (10.3.5extrastuff). 1210bool Driver::GetReleaseVersion(const char *Str, unsigned &Major, 1211 unsigned &Minor, unsigned &Micro, 1212 bool &HadExtra) { 1213 HadExtra = false; 1214 1215 Major = Minor = Micro = 0; 1216 if (*Str == '\0') 1217 return true; 1218 1219 char *End; 1220 Major = (unsigned) strtol(Str, &End, 10); 1221 if (*Str != '\0' && *End == '\0') 1222 return true; 1223 if (*End != '.') 1224 return false; 1225 1226 Str = End+1; 1227 Minor = (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 Micro = (unsigned) strtol(Str, &End, 10); 1235 if (*Str != '\0' && *End == '\0') 1236 return true; 1237 if (Str == End) 1238 return false; 1239 HadExtra = true; 1240 return true; 1241} 1242