Driver.cpp revision 212904
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/Config/config.h" 29#include "llvm/ADT/StringSet.h" 30#include "llvm/ADT/OwningPtr.h" 31#include "llvm/Support/PrettyStackTrace.h" 32#include "llvm/Support/raw_ostream.h" 33#include "llvm/System/Path.h" 34#include "llvm/System/Program.h" 35 36#include "InputInfo.h" 37 38#include <map> 39 40using namespace clang::driver; 41using namespace clang; 42 43Driver::Driver(llvm::StringRef _ClangExecutable, 44 llvm::StringRef _DefaultHostTriple, 45 llvm::StringRef _DefaultImageName, 46 bool IsProduction, bool CXXIsProduction, 47 Diagnostic &_Diags) 48 : Opts(createDriverOptTable()), Diags(_Diags), 49 ClangExecutable(_ClangExecutable), DefaultHostTriple(_DefaultHostTriple), 50 DefaultImageName(_DefaultImageName), 51 DriverTitle("clang \"gcc-compatible\" driver"), 52 Host(0), 53 CCCGenericGCCName("gcc"), CCPrintOptionsFilename(0), CCCIsCXX(false), 54 CCCEcho(false), CCCPrintBindings(false), CCPrintOptions(false), 55 CheckInputsExist(true), CCCUseClang(true), CCCUseClangCXX(true), 56 CCCUseClangCPP(true), CCCUsePCH(true), SuppressMissingInputWarning(false) { 57 if (IsProduction) { 58 // In a "production" build, only use clang on architectures we expect to 59 // work, and don't use clang C++. 60 // 61 // During development its more convenient to always have the driver use 62 // clang, but we don't want users to be confused when things don't work, or 63 // to file bugs for things we don't support. 64 CCCClangArchs.insert(llvm::Triple::x86); 65 CCCClangArchs.insert(llvm::Triple::x86_64); 66 CCCClangArchs.insert(llvm::Triple::arm); 67 68 if (!CXXIsProduction) 69 CCCUseClangCXX = false; 70 } 71 72 llvm::sys::Path Executable(ClangExecutable); 73 Name = Executable.getBasename(); 74 Dir = Executable.getDirname(); 75 76 // Compute the path to the resource directory. 77 llvm::sys::Path P(Dir); 78 P.eraseComponent(); // Remove /bin from foo/bin 79 P.appendComponent("lib"); 80 P.appendComponent("clang"); 81 P.appendComponent(CLANG_VERSION_STRING); 82 ResourceDir = P.str(); 83} 84 85Driver::~Driver() { 86 delete Opts; 87 delete Host; 88} 89 90InputArgList *Driver::ParseArgStrings(const char **ArgBegin, 91 const char **ArgEnd) { 92 llvm::PrettyStackTraceString CrashInfo("Command line argument parsing"); 93 unsigned MissingArgIndex, MissingArgCount; 94 InputArgList *Args = getOpts().ParseArgs(ArgBegin, ArgEnd, 95 MissingArgIndex, MissingArgCount); 96 97 // Check for missing argument error. 98 if (MissingArgCount) 99 Diag(clang::diag::err_drv_missing_argument) 100 << Args->getArgString(MissingArgIndex) << MissingArgCount; 101 102 // Check for unsupported options. 103 for (ArgList::const_iterator it = Args->begin(), ie = Args->end(); 104 it != ie; ++it) { 105 Arg *A = *it; 106 if (A->getOption().isUnsupported()) { 107 Diag(clang::diag::err_drv_unsupported_opt) << A->getAsString(*Args); 108 continue; 109 } 110 } 111 112 return Args; 113} 114 115DerivedArgList *Driver::TranslateInputArgs(const InputArgList &Args) const { 116 DerivedArgList *DAL = new DerivedArgList(Args); 117 118 for (ArgList::const_iterator it = Args.begin(), 119 ie = Args.end(); it != ie; ++it) { 120 const Arg *A = *it; 121 122 // Unfortunately, we have to parse some forwarding options (-Xassembler, 123 // -Xlinker, -Xpreprocessor) because we either integrate their functionality 124 // (assembler and preprocessor), or bypass a previous driver ('collect2'). 125 126 // Rewrite linker options, to replace --no-demangle with a custom internal 127 // option. 128 if ((A->getOption().matches(options::OPT_Wl_COMMA) || 129 A->getOption().matches(options::OPT_Xlinker)) && 130 A->containsValue("--no-demangle")) { 131 // Add the rewritten no-demangle argument. 132 DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_Xlinker__no_demangle)); 133 134 // Add the remaining values as Xlinker arguments. 135 for (unsigned i = 0, e = A->getNumValues(); i != e; ++i) 136 if (llvm::StringRef(A->getValue(Args, i)) != "--no-demangle") 137 DAL->AddSeparateArg(A, Opts->getOption(options::OPT_Xlinker), 138 A->getValue(Args, i)); 139 140 continue; 141 } 142 143 // Rewrite preprocessor options, to replace -Wp,-MD,FOO which is used by 144 // some build systems. We don't try to be complete here because we don't 145 // care to encourage this usage model. 146 if (A->getOption().matches(options::OPT_Wp_COMMA) && 147 A->getNumValues() == 2 && 148 (A->getValue(Args, 0) == llvm::StringRef("-MD") || 149 A->getValue(Args, 0) == llvm::StringRef("-MMD"))) { 150 // Rewrite to -MD/-MMD along with -MF. 151 if (A->getValue(Args, 0) == llvm::StringRef("-MD")) 152 DAL->AddFlagArg(A, Opts->getOption(options::OPT_MD)); 153 else 154 DAL->AddFlagArg(A, Opts->getOption(options::OPT_MMD)); 155 DAL->AddSeparateArg(A, Opts->getOption(options::OPT_MF), 156 A->getValue(Args, 1)); 157 continue; 158 } 159 160 DAL->append(*it); 161 } 162 163 // Add a default value of -mlinker-version=, if one was given and the user 164 // didn't specify one. 165#if defined(HOST_LINK_VERSION) 166 if (!Args.hasArg(options::OPT_mlinker_version_EQ)) { 167 DAL->AddJoinedArg(0, Opts->getOption(options::OPT_mlinker_version_EQ), 168 HOST_LINK_VERSION); 169 DAL->getLastArg(options::OPT_mlinker_version_EQ)->claim(); 170 } 171#endif 172 173 return DAL; 174} 175 176Compilation *Driver::BuildCompilation(int argc, const char **argv) { 177 llvm::PrettyStackTraceString CrashInfo("Compilation construction"); 178 179 // FIXME: Handle environment options which effect driver behavior, somewhere 180 // (client?). GCC_EXEC_PREFIX, COMPILER_PATH, LIBRARY_PATH, LPATH, 181 // CC_PRINT_OPTIONS. 182 183 // FIXME: What are we going to do with -V and -b? 184 185 // FIXME: This stuff needs to go into the Compilation, not the driver. 186 bool CCCPrintOptions = false, CCCPrintActions = false; 187 188 const char **Start = argv + 1, **End = argv + argc; 189 190 InputArgList *Args = ParseArgStrings(Start, End); 191 192 // -no-canonical-prefixes is used very early in main. 193 Args->ClaimAllArgs(options::OPT_no_canonical_prefixes); 194 195 // Ignore -pipe. 196 Args->ClaimAllArgs(options::OPT_pipe); 197 198 // Extract -ccc args. 199 // 200 // FIXME: We need to figure out where this behavior should live. Most of it 201 // should be outside in the client; the parts that aren't should have proper 202 // options, either by introducing new ones or by overloading gcc ones like -V 203 // or -b. 204 CCCPrintOptions = Args->hasArg(options::OPT_ccc_print_options); 205 CCCPrintActions = Args->hasArg(options::OPT_ccc_print_phases); 206 CCCPrintBindings = Args->hasArg(options::OPT_ccc_print_bindings); 207 CCCIsCXX = Args->hasArg(options::OPT_ccc_cxx) || CCCIsCXX; 208 CCCEcho = Args->hasArg(options::OPT_ccc_echo); 209 if (const Arg *A = Args->getLastArg(options::OPT_ccc_gcc_name)) 210 CCCGenericGCCName = A->getValue(*Args); 211 CCCUseClangCXX = Args->hasFlag(options::OPT_ccc_clang_cxx, 212 options::OPT_ccc_no_clang_cxx, 213 CCCUseClangCXX); 214 CCCUsePCH = Args->hasFlag(options::OPT_ccc_pch_is_pch, 215 options::OPT_ccc_pch_is_pth); 216 CCCUseClang = !Args->hasArg(options::OPT_ccc_no_clang); 217 CCCUseClangCPP = !Args->hasArg(options::OPT_ccc_no_clang_cpp); 218 if (const Arg *A = Args->getLastArg(options::OPT_ccc_clang_archs)) { 219 llvm::StringRef Cur = A->getValue(*Args); 220 221 CCCClangArchs.clear(); 222 while (!Cur.empty()) { 223 std::pair<llvm::StringRef, llvm::StringRef> Split = Cur.split(','); 224 225 if (!Split.first.empty()) { 226 llvm::Triple::ArchType Arch = 227 llvm::Triple(Split.first, "", "").getArch(); 228 229 if (Arch == llvm::Triple::UnknownArch) 230 Diag(clang::diag::err_drv_invalid_arch_name) << Split.first; 231 232 CCCClangArchs.insert(Arch); 233 } 234 235 Cur = Split.second; 236 } 237 } 238 // FIXME: We shouldn't overwrite the default host triple here, but we have 239 // nowhere else to put this currently. 240 if (const Arg *A = Args->getLastArg(options::OPT_ccc_host_triple)) 241 DefaultHostTriple = A->getValue(*Args); 242 if (const Arg *A = Args->getLastArg(options::OPT_ccc_install_dir)) 243 Dir = InstalledDir = A->getValue(*Args); 244 if (const Arg *A = Args->getLastArg(options::OPT_B)) 245 PrefixDir = A->getValue(*Args); 246 247 Host = GetHostInfo(DefaultHostTriple.c_str()); 248 249 // Perform the default argument translations. 250 DerivedArgList *TranslatedArgs = TranslateInputArgs(*Args); 251 252 // The compilation takes ownership of Args. 253 Compilation *C = new Compilation(*this, *Host->CreateToolChain(*Args), Args, 254 TranslatedArgs); 255 256 // FIXME: This behavior shouldn't be here. 257 if (CCCPrintOptions) { 258 PrintOptions(C->getInputArgs()); 259 return C; 260 } 261 262 if (!HandleImmediateArgs(*C)) 263 return C; 264 265 // Construct the list of abstract actions to perform for this compilation. 266 if (Host->useDriverDriver()) 267 BuildUniversalActions(C->getDefaultToolChain(), C->getArgs(), 268 C->getActions()); 269 else 270 BuildActions(C->getDefaultToolChain(), C->getArgs(), C->getActions()); 271 272 if (CCCPrintActions) { 273 PrintActions(*C); 274 return C; 275 } 276 277 BuildJobs(*C); 278 279 return C; 280} 281 282int Driver::ExecuteCompilation(const Compilation &C) const { 283 // Just print if -### was present. 284 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) { 285 C.PrintJob(llvm::errs(), C.getJobs(), "\n", true); 286 return 0; 287 } 288 289 // If there were errors building the compilation, quit now. 290 if (getDiags().getNumErrors()) 291 return 1; 292 293 const Command *FailingCommand = 0; 294 int Res = C.ExecuteJob(C.getJobs(), FailingCommand); 295 296 // Remove temp files. 297 C.CleanupFileList(C.getTempFiles()); 298 299 // If the command succeeded, we are done. 300 if (Res == 0) 301 return Res; 302 303 // Otherwise, remove result files as well. 304 if (!C.getArgs().hasArg(options::OPT_save_temps)) 305 C.CleanupFileList(C.getResultFiles(), true); 306 307 // Print extra information about abnormal failures, if possible. 308 // 309 // This is ad-hoc, but we don't want to be excessively noisy. If the result 310 // status was 1, assume the command failed normally. In particular, if it was 311 // the compiler then assume it gave a reasonable error code. Failures in other 312 // tools are less common, and they generally have worse diagnostics, so always 313 // print the diagnostic there. 314 const Tool &FailingTool = FailingCommand->getCreator(); 315 316 if (!FailingCommand->getCreator().hasGoodDiagnostics() || Res != 1) { 317 // FIXME: See FIXME above regarding result code interpretation. 318 if (Res < 0) 319 Diag(clang::diag::err_drv_command_signalled) 320 << FailingTool.getShortName() << -Res; 321 else 322 Diag(clang::diag::err_drv_command_failed) 323 << FailingTool.getShortName() << Res; 324 } 325 326 return Res; 327} 328 329void Driver::PrintOptions(const ArgList &Args) const { 330 unsigned i = 0; 331 for (ArgList::const_iterator it = Args.begin(), ie = Args.end(); 332 it != ie; ++it, ++i) { 333 Arg *A = *it; 334 llvm::errs() << "Option " << i << " - " 335 << "Name: \"" << A->getOption().getName() << "\", " 336 << "Values: {"; 337 for (unsigned j = 0; j < A->getNumValues(); ++j) { 338 if (j) 339 llvm::errs() << ", "; 340 llvm::errs() << '"' << A->getValue(Args, j) << '"'; 341 } 342 llvm::errs() << "}\n"; 343 } 344} 345 346void Driver::PrintHelp(bool ShowHidden) const { 347 getOpts().PrintHelp(llvm::outs(), Name.c_str(), DriverTitle.c_str(), 348 ShowHidden); 349} 350 351void Driver::PrintVersion(const Compilation &C, llvm::raw_ostream &OS) const { 352 // FIXME: The following handlers should use a callback mechanism, we don't 353 // know what the client would like to do. 354 OS << getClangFullVersion() << '\n'; 355 const ToolChain &TC = C.getDefaultToolChain(); 356 OS << "Target: " << TC.getTripleString() << '\n'; 357 358 // Print the threading model. 359 // 360 // FIXME: Implement correctly. 361 OS << "Thread model: " << "posix" << '\n'; 362} 363 364/// PrintDiagnosticCategories - Implement the --print-diagnostic-categories 365/// option. 366static void PrintDiagnosticCategories(llvm::raw_ostream &OS) { 367 for (unsigned i = 1; // Skip the empty category. 368 const char *CategoryName = Diagnostic::getCategoryNameFromID(i); ++i) 369 OS << i << ',' << CategoryName << '\n'; 370} 371 372bool Driver::HandleImmediateArgs(const Compilation &C) { 373 // The order these options are handled in gcc is all over the place, but we 374 // don't expect inconsistencies w.r.t. that to matter in practice. 375 376 if (C.getArgs().hasArg(options::OPT_dumpversion)) { 377 llvm::outs() << CLANG_VERSION_STRING "\n"; 378 return false; 379 } 380 381 if (C.getArgs().hasArg(options::OPT__print_diagnostic_categories)) { 382 PrintDiagnosticCategories(llvm::outs()); 383 return false; 384 } 385 386 if (C.getArgs().hasArg(options::OPT__help) || 387 C.getArgs().hasArg(options::OPT__help_hidden)) { 388 PrintHelp(C.getArgs().hasArg(options::OPT__help_hidden)); 389 return false; 390 } 391 392 if (C.getArgs().hasArg(options::OPT__version)) { 393 // Follow gcc behavior and use stdout for --version and stderr for -v. 394 PrintVersion(C, llvm::outs()); 395 return false; 396 } 397 398 if (C.getArgs().hasArg(options::OPT_v) || 399 C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) { 400 PrintVersion(C, llvm::errs()); 401 SuppressMissingInputWarning = true; 402 } 403 404 const ToolChain &TC = C.getDefaultToolChain(); 405 if (C.getArgs().hasArg(options::OPT_print_search_dirs)) { 406 llvm::outs() << "programs: ="; 407 for (ToolChain::path_list::const_iterator it = TC.getProgramPaths().begin(), 408 ie = TC.getProgramPaths().end(); it != ie; ++it) { 409 if (it != TC.getProgramPaths().begin()) 410 llvm::outs() << ':'; 411 llvm::outs() << *it; 412 } 413 llvm::outs() << "\n"; 414 llvm::outs() << "libraries: ="; 415 for (ToolChain::path_list::const_iterator it = TC.getFilePaths().begin(), 416 ie = TC.getFilePaths().end(); it != ie; ++it) { 417 if (it != TC.getFilePaths().begin()) 418 llvm::outs() << ':'; 419 llvm::outs() << *it; 420 } 421 llvm::outs() << "\n"; 422 return false; 423 } 424 425 // FIXME: The following handlers should use a callback mechanism, we don't 426 // know what the client would like to do. 427 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) { 428 llvm::outs() << GetFilePath(A->getValue(C.getArgs()), TC) << "\n"; 429 return false; 430 } 431 432 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_prog_name_EQ)) { 433 llvm::outs() << GetProgramPath(A->getValue(C.getArgs()), TC) << "\n"; 434 return false; 435 } 436 437 if (C.getArgs().hasArg(options::OPT_print_libgcc_file_name)) { 438 llvm::outs() << GetFilePath("libgcc.a", TC) << "\n"; 439 return false; 440 } 441 442 if (C.getArgs().hasArg(options::OPT_print_multi_lib)) { 443 // FIXME: We need tool chain support for this. 444 llvm::outs() << ".;\n"; 445 446 switch (C.getDefaultToolChain().getTriple().getArch()) { 447 default: 448 break; 449 450 case llvm::Triple::x86_64: 451 llvm::outs() << "x86_64;@m64" << "\n"; 452 break; 453 454 case llvm::Triple::ppc64: 455 llvm::outs() << "ppc64;@m64" << "\n"; 456 break; 457 } 458 return false; 459 } 460 461 // FIXME: What is the difference between print-multi-directory and 462 // print-multi-os-directory? 463 if (C.getArgs().hasArg(options::OPT_print_multi_directory) || 464 C.getArgs().hasArg(options::OPT_print_multi_os_directory)) { 465 switch (C.getDefaultToolChain().getTriple().getArch()) { 466 default: 467 case llvm::Triple::x86: 468 case llvm::Triple::ppc: 469 llvm::outs() << "." << "\n"; 470 break; 471 472 case llvm::Triple::x86_64: 473 llvm::outs() << "x86_64" << "\n"; 474 break; 475 476 case llvm::Triple::ppc64: 477 llvm::outs() << "ppc64" << "\n"; 478 break; 479 } 480 return false; 481 } 482 483 return true; 484} 485 486static unsigned PrintActions1(const Compilation &C, Action *A, 487 std::map<Action*, unsigned> &Ids) { 488 if (Ids.count(A)) 489 return Ids[A]; 490 491 std::string str; 492 llvm::raw_string_ostream os(str); 493 494 os << Action::getClassName(A->getKind()) << ", "; 495 if (InputAction *IA = dyn_cast<InputAction>(A)) { 496 os << "\"" << IA->getInputArg().getValue(C.getArgs()) << "\""; 497 } else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) { 498 os << '"' << (BIA->getArchName() ? BIA->getArchName() : 499 C.getDefaultToolChain().getArchName()) << '"' 500 << ", {" << PrintActions1(C, *BIA->begin(), Ids) << "}"; 501 } else { 502 os << "{"; 503 for (Action::iterator it = A->begin(), ie = A->end(); it != ie;) { 504 os << PrintActions1(C, *it, Ids); 505 ++it; 506 if (it != ie) 507 os << ", "; 508 } 509 os << "}"; 510 } 511 512 unsigned Id = Ids.size(); 513 Ids[A] = Id; 514 llvm::errs() << Id << ": " << os.str() << ", " 515 << types::getTypeName(A->getType()) << "\n"; 516 517 return Id; 518} 519 520void Driver::PrintActions(const Compilation &C) const { 521 std::map<Action*, unsigned> Ids; 522 for (ActionList::const_iterator it = C.getActions().begin(), 523 ie = C.getActions().end(); it != ie; ++it) 524 PrintActions1(C, *it, Ids); 525} 526 527/// \brief Check whether the given input tree contains any compilation (or 528/// assembly) actions. 529static bool ContainsCompileAction(const Action *A) { 530 if (isa<CompileJobAction>(A) || isa<AssembleJobAction>(A)) 531 return true; 532 533 for (Action::const_iterator it = A->begin(), ie = A->end(); it != ie; ++it) 534 if (ContainsCompileAction(*it)) 535 return true; 536 537 return false; 538} 539 540void Driver::BuildUniversalActions(const ToolChain &TC, 541 const ArgList &Args, 542 ActionList &Actions) const { 543 llvm::PrettyStackTraceString CrashInfo("Building universal build actions"); 544 // Collect the list of architectures. Duplicates are allowed, but should only 545 // be handled once (in the order seen). 546 llvm::StringSet<> ArchNames; 547 llvm::SmallVector<const char *, 4> Archs; 548 for (ArgList::const_iterator it = Args.begin(), ie = Args.end(); 549 it != ie; ++it) { 550 Arg *A = *it; 551 552 if (A->getOption().matches(options::OPT_arch)) { 553 // Validate the option here; we don't save the type here because its 554 // particular spelling may participate in other driver choices. 555 llvm::Triple::ArchType Arch = 556 llvm::Triple::getArchTypeForDarwinArchName(A->getValue(Args)); 557 if (Arch == llvm::Triple::UnknownArch) { 558 Diag(clang::diag::err_drv_invalid_arch_name) 559 << A->getAsString(Args); 560 continue; 561 } 562 563 A->claim(); 564 if (ArchNames.insert(A->getValue(Args))) 565 Archs.push_back(A->getValue(Args)); 566 } 567 } 568 569 // When there is no explicit arch for this platform, make sure we still bind 570 // the architecture (to the default) so that -Xarch_ is handled correctly. 571 if (!Archs.size()) 572 Archs.push_back(0); 573 574 // FIXME: We killed off some others but these aren't yet detected in a 575 // functional manner. If we added information to jobs about which "auxiliary" 576 // files they wrote then we could detect the conflict these cause downstream. 577 if (Archs.size() > 1) { 578 // No recovery needed, the point of this is just to prevent 579 // overwriting the same files. 580 if (const Arg *A = Args.getLastArg(options::OPT_save_temps)) 581 Diag(clang::diag::err_drv_invalid_opt_with_multiple_archs) 582 << A->getAsString(Args); 583 } 584 585 ActionList SingleActions; 586 BuildActions(TC, Args, SingleActions); 587 588 // Add in arch bindings for every top level action, as well as lipo and 589 // dsymutil steps if needed. 590 for (unsigned i = 0, e = SingleActions.size(); i != e; ++i) { 591 Action *Act = SingleActions[i]; 592 593 // Make sure we can lipo this kind of output. If not (and it is an actual 594 // output) then we disallow, since we can't create an output file with the 595 // right name without overwriting it. We could remove this oddity by just 596 // changing the output names to include the arch, which would also fix 597 // -save-temps. Compatibility wins for now. 598 599 if (Archs.size() > 1 && !types::canLipoType(Act->getType())) 600 Diag(clang::diag::err_drv_invalid_output_with_multiple_archs) 601 << types::getTypeName(Act->getType()); 602 603 ActionList Inputs; 604 for (unsigned i = 0, e = Archs.size(); i != e; ++i) { 605 Inputs.push_back(new BindArchAction(Act, Archs[i])); 606 if (i != 0) 607 Inputs.back()->setOwnsInputs(false); 608 } 609 610 // Lipo if necessary, we do it this way because we need to set the arch flag 611 // so that -Xarch_ gets overwritten. 612 if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing) 613 Actions.append(Inputs.begin(), Inputs.end()); 614 else 615 Actions.push_back(new LipoJobAction(Inputs, Act->getType())); 616 617 // Add a 'dsymutil' step if necessary, when debug info is enabled and we 618 // have a compile input. We need to run 'dsymutil' ourselves in such cases 619 // because the debug info will refer to a temporary object file which is 620 // will be removed at the end of the compilation process. 621 if (Act->getType() == types::TY_Image) { 622 Arg *A = Args.getLastArg(options::OPT_g_Group); 623 if (A && !A->getOption().matches(options::OPT_g0) && 624 !A->getOption().matches(options::OPT_gstabs) && 625 ContainsCompileAction(Actions.back())) { 626 ActionList Inputs; 627 Inputs.push_back(Actions.back()); 628 Actions.pop_back(); 629 630 Actions.push_back(new DsymutilJobAction(Inputs, types::TY_dSYM)); 631 } 632 } 633 } 634} 635 636void Driver::BuildActions(const ToolChain &TC, const ArgList &Args, 637 ActionList &Actions) const { 638 llvm::PrettyStackTraceString CrashInfo("Building compilation actions"); 639 // Start by constructing the list of inputs and their types. 640 641 // Track the current user specified (-x) input. We also explicitly track the 642 // argument used to set the type; we only want to claim the type when we 643 // actually use it, so we warn about unused -x arguments. 644 types::ID InputType = types::TY_Nothing; 645 Arg *InputTypeArg = 0; 646 647 llvm::SmallVector<std::pair<types::ID, const Arg*>, 16> Inputs; 648 for (ArgList::const_iterator it = Args.begin(), ie = Args.end(); 649 it != ie; ++it) { 650 Arg *A = *it; 651 652 if (isa<InputOption>(A->getOption())) { 653 const char *Value = A->getValue(Args); 654 types::ID Ty = types::TY_INVALID; 655 656 // Infer the input type if necessary. 657 if (InputType == types::TY_Nothing) { 658 // If there was an explicit arg for this, claim it. 659 if (InputTypeArg) 660 InputTypeArg->claim(); 661 662 // stdin must be handled specially. 663 if (memcmp(Value, "-", 2) == 0) { 664 // If running with -E, treat as a C input (this changes the builtin 665 // macros, for example). This may be overridden by -ObjC below. 666 // 667 // Otherwise emit an error but still use a valid type to avoid 668 // spurious errors (e.g., no inputs). 669 if (!Args.hasArgNoClaim(options::OPT_E)) 670 Diag(clang::diag::err_drv_unknown_stdin_type); 671 Ty = types::TY_C; 672 } else { 673 // Otherwise lookup by extension, and fallback to ObjectType if not 674 // found. We use a host hook here because Darwin at least has its own 675 // idea of what .s is. 676 if (const char *Ext = strrchr(Value, '.')) 677 Ty = TC.LookupTypeForExtension(Ext + 1); 678 679 if (Ty == types::TY_INVALID) 680 Ty = types::TY_Object; 681 682 // If the driver is invoked as C++ compiler (like clang++ or c++) it 683 // should autodetect some input files as C++ for g++ compatibility. 684 if (CCCIsCXX) { 685 types::ID OldTy = Ty; 686 Ty = types::lookupCXXTypeForCType(Ty); 687 688 if (Ty != OldTy) 689 Diag(clang::diag::warn_drv_treating_input_as_cxx) 690 << getTypeName(OldTy) << getTypeName(Ty); 691 } 692 } 693 694 // -ObjC and -ObjC++ override the default language, but only for "source 695 // files". We just treat everything that isn't a linker input as a 696 // source file. 697 // 698 // FIXME: Clean this up if we move the phase sequence into the type. 699 if (Ty != types::TY_Object) { 700 if (Args.hasArg(options::OPT_ObjC)) 701 Ty = types::TY_ObjC; 702 else if (Args.hasArg(options::OPT_ObjCXX)) 703 Ty = types::TY_ObjCXX; 704 } 705 } else { 706 assert(InputTypeArg && "InputType set w/o InputTypeArg"); 707 InputTypeArg->claim(); 708 Ty = InputType; 709 } 710 711 // Check that the file exists, if enabled. 712 if (CheckInputsExist && memcmp(Value, "-", 2) != 0 && 713 !llvm::sys::Path(Value).exists()) 714 Diag(clang::diag::err_drv_no_such_file) << A->getValue(Args); 715 else 716 Inputs.push_back(std::make_pair(Ty, A)); 717 718 } else if (A->getOption().isLinkerInput()) { 719 // Just treat as object type, we could make a special type for this if 720 // necessary. 721 Inputs.push_back(std::make_pair(types::TY_Object, A)); 722 723 } else if (A->getOption().matches(options::OPT_x)) { 724 InputTypeArg = A; 725 InputType = types::lookupTypeForTypeSpecifier(A->getValue(Args)); 726 727 // Follow gcc behavior and treat as linker input for invalid -x 728 // options. Its not clear why we shouldn't just revert to unknown; but 729 // this isn't very important, we might as well be bug comatible. 730 if (!InputType) { 731 Diag(clang::diag::err_drv_unknown_language) << A->getValue(Args); 732 InputType = types::TY_Object; 733 } 734 } 735 } 736 737 if (!SuppressMissingInputWarning && Inputs.empty()) { 738 Diag(clang::diag::err_drv_no_input_files); 739 return; 740 } 741 742 // Determine which compilation mode we are in. We look for options which 743 // affect the phase, starting with the earliest phases, and record which 744 // option we used to determine the final phase. 745 Arg *FinalPhaseArg = 0; 746 phases::ID FinalPhase; 747 748 // -{E,M,MM} only run the preprocessor. 749 if ((FinalPhaseArg = Args.getLastArg(options::OPT_E)) || 750 (FinalPhaseArg = Args.getLastArg(options::OPT_M)) || 751 (FinalPhaseArg = Args.getLastArg(options::OPT_MM))) { 752 FinalPhase = phases::Preprocess; 753 754 // -{fsyntax-only,-analyze,emit-ast,S} only run up to the compiler. 755 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_fsyntax_only)) || 756 (FinalPhaseArg = Args.getLastArg(options::OPT_rewrite_objc)) || 757 (FinalPhaseArg = Args.getLastArg(options::OPT__analyze, 758 options::OPT__analyze_auto)) || 759 (FinalPhaseArg = Args.getLastArg(options::OPT_emit_ast)) || 760 (FinalPhaseArg = Args.getLastArg(options::OPT_S))) { 761 FinalPhase = phases::Compile; 762 763 // -c only runs up to the assembler. 764 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_c))) { 765 FinalPhase = phases::Assemble; 766 767 // Otherwise do everything. 768 } else 769 FinalPhase = phases::Link; 770 771 // Reject -Z* at the top level, these options should never have been exposed 772 // by gcc. 773 if (Arg *A = Args.getLastArg(options::OPT_Z_Joined)) 774 Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args); 775 776 // Construct the actions to perform. 777 ActionList LinkerInputs; 778 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 779 types::ID InputType = Inputs[i].first; 780 const Arg *InputArg = Inputs[i].second; 781 782 unsigned NumSteps = types::getNumCompilationPhases(InputType); 783 assert(NumSteps && "Invalid number of steps!"); 784 785 // If the first step comes after the final phase we are doing as part of 786 // this compilation, warn the user about it. 787 phases::ID InitialPhase = types::getCompilationPhase(InputType, 0); 788 if (InitialPhase > FinalPhase) { 789 // Claim here to avoid the more general unused warning. 790 InputArg->claim(); 791 792 // Special case '-E' warning on a previously preprocessed file to make 793 // more sense. 794 if (InitialPhase == phases::Compile && FinalPhase == phases::Preprocess && 795 getPreprocessedType(InputType) == types::TY_INVALID) 796 Diag(clang::diag::warn_drv_preprocessed_input_file_unused) 797 << InputArg->getAsString(Args) 798 << FinalPhaseArg->getOption().getName(); 799 else 800 Diag(clang::diag::warn_drv_input_file_unused) 801 << InputArg->getAsString(Args) 802 << getPhaseName(InitialPhase) 803 << FinalPhaseArg->getOption().getName(); 804 continue; 805 } 806 807 // Build the pipeline for this file. 808 llvm::OwningPtr<Action> Current(new InputAction(*InputArg, InputType)); 809 for (unsigned i = 0; i != NumSteps; ++i) { 810 phases::ID Phase = types::getCompilationPhase(InputType, i); 811 812 // We are done if this step is past what the user requested. 813 if (Phase > FinalPhase) 814 break; 815 816 // Queue linker inputs. 817 if (Phase == phases::Link) { 818 assert(i + 1 == NumSteps && "linking must be final compilation step."); 819 LinkerInputs.push_back(Current.take()); 820 break; 821 } 822 823 // Some types skip the assembler phase (e.g., llvm-bc), but we can't 824 // encode this in the steps because the intermediate type depends on 825 // arguments. Just special case here. 826 if (Phase == phases::Assemble && Current->getType() != types::TY_PP_Asm) 827 continue; 828 829 // Otherwise construct the appropriate action. 830 Current.reset(ConstructPhaseAction(Args, Phase, Current.take())); 831 if (Current->getType() == types::TY_Nothing) 832 break; 833 } 834 835 // If we ended with something, add to the output list. 836 if (Current) 837 Actions.push_back(Current.take()); 838 } 839 840 // Add a link action if necessary. 841 if (!LinkerInputs.empty()) 842 Actions.push_back(new LinkJobAction(LinkerInputs, types::TY_Image)); 843 844 // If we are linking, claim any options which are obviously only used for 845 // compilation. 846 if (FinalPhase == phases::Link) 847 Args.ClaimAllArgs(options::OPT_CompileOnly_Group); 848} 849 850Action *Driver::ConstructPhaseAction(const ArgList &Args, phases::ID Phase, 851 Action *Input) const { 852 llvm::PrettyStackTraceString CrashInfo("Constructing phase actions"); 853 // Build the appropriate action. 854 switch (Phase) { 855 case phases::Link: assert(0 && "link action invalid here."); 856 case phases::Preprocess: { 857 types::ID OutputTy; 858 // -{M, MM} alter the output type. 859 if (Args.hasArg(options::OPT_M) || Args.hasArg(options::OPT_MM)) { 860 OutputTy = types::TY_Dependencies; 861 } else { 862 OutputTy = types::getPreprocessedType(Input->getType()); 863 assert(OutputTy != types::TY_INVALID && 864 "Cannot preprocess this input type!"); 865 } 866 return new PreprocessJobAction(Input, OutputTy); 867 } 868 case phases::Precompile: 869 return new PrecompileJobAction(Input, types::TY_PCH); 870 case phases::Compile: { 871 bool HasO4 = false; 872 if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) 873 HasO4 = A->getOption().matches(options::OPT_O4); 874 875 if (Args.hasArg(options::OPT_fsyntax_only)) { 876 return new CompileJobAction(Input, types::TY_Nothing); 877 } else if (Args.hasArg(options::OPT_rewrite_objc)) { 878 return new CompileJobAction(Input, types::TY_RewrittenObjC); 879 } else if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto)) { 880 return new AnalyzeJobAction(Input, types::TY_Plist); 881 } else if (Args.hasArg(options::OPT_emit_ast)) { 882 return new CompileJobAction(Input, types::TY_AST); 883 } else if (Args.hasArg(options::OPT_emit_llvm) || 884 Args.hasArg(options::OPT_flto) || HasO4) { 885 types::ID Output = 886 Args.hasArg(options::OPT_S) ? types::TY_LTO_IR : types::TY_LTO_BC; 887 return new CompileJobAction(Input, Output); 888 } else { 889 return new CompileJobAction(Input, types::TY_PP_Asm); 890 } 891 } 892 case phases::Assemble: 893 return new AssembleJobAction(Input, types::TY_Object); 894 } 895 896 assert(0 && "invalid phase in ConstructPhaseAction"); 897 return 0; 898} 899 900void Driver::BuildJobs(Compilation &C) const { 901 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs"); 902 903 Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o); 904 905 // It is an error to provide a -o option if we are making multiple output 906 // files. 907 if (FinalOutput) { 908 unsigned NumOutputs = 0; 909 for (ActionList::const_iterator it = C.getActions().begin(), 910 ie = C.getActions().end(); it != ie; ++it) 911 if ((*it)->getType() != types::TY_Nothing) 912 ++NumOutputs; 913 914 if (NumOutputs > 1) { 915 Diag(clang::diag::err_drv_output_argument_with_multiple_files); 916 FinalOutput = 0; 917 } 918 } 919 920 for (ActionList::const_iterator it = C.getActions().begin(), 921 ie = C.getActions().end(); it != ie; ++it) { 922 Action *A = *it; 923 924 // If we are linking an image for multiple archs then the linker wants 925 // -arch_multiple and -final_output <final image name>. Unfortunately, this 926 // doesn't fit in cleanly because we have to pass this information down. 927 // 928 // FIXME: This is a hack; find a cleaner way to integrate this into the 929 // process. 930 const char *LinkingOutput = 0; 931 if (isa<LipoJobAction>(A)) { 932 if (FinalOutput) 933 LinkingOutput = FinalOutput->getValue(C.getArgs()); 934 else 935 LinkingOutput = DefaultImageName.c_str(); 936 } 937 938 InputInfo II; 939 BuildJobsForAction(C, A, &C.getDefaultToolChain(), 940 /*BoundArch*/0, 941 /*AtTopLevel*/ true, 942 /*LinkingOutput*/ LinkingOutput, 943 II); 944 } 945 946 // If the user passed -Qunused-arguments or there were errors, don't warn 947 // about any unused arguments. 948 if (Diags.getNumErrors() || 949 C.getArgs().hasArg(options::OPT_Qunused_arguments)) 950 return; 951 952 // Claim -### here. 953 (void) C.getArgs().hasArg(options::OPT__HASH_HASH_HASH); 954 955 for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end(); 956 it != ie; ++it) { 957 Arg *A = *it; 958 959 // FIXME: It would be nice to be able to send the argument to the 960 // Diagnostic, so that extra values, position, and so on could be printed. 961 if (!A->isClaimed()) { 962 if (A->getOption().hasNoArgumentUnused()) 963 continue; 964 965 // Suppress the warning automatically if this is just a flag, and it is an 966 // instance of an argument we already claimed. 967 const Option &Opt = A->getOption(); 968 if (isa<FlagOption>(Opt)) { 969 bool DuplicateClaimed = false; 970 971 for (arg_iterator it = C.getArgs().filtered_begin(&Opt), 972 ie = C.getArgs().filtered_end(); it != ie; ++it) { 973 if ((*it)->isClaimed()) { 974 DuplicateClaimed = true; 975 break; 976 } 977 } 978 979 if (DuplicateClaimed) 980 continue; 981 } 982 983 Diag(clang::diag::warn_drv_unused_argument) 984 << A->getAsString(C.getArgs()); 985 } 986 } 987} 988 989static const Tool &SelectToolForJob(Compilation &C, const ToolChain *TC, 990 const JobAction *JA, 991 const ActionList *&Inputs) { 992 const Tool *ToolForJob = 0; 993 994 // See if we should look for a compiler with an integrated assembler. We match 995 // bottom up, so what we are actually looking for is an assembler job with a 996 // compiler input. 997 998 // FIXME: This doesn't belong here, but ideally we will support static soon 999 // anyway. 1000 bool HasStatic = (C.getArgs().hasArg(options::OPT_mkernel) || 1001 C.getArgs().hasArg(options::OPT_static) || 1002 C.getArgs().hasArg(options::OPT_fapple_kext)); 1003 bool IsIADefault = (TC->IsIntegratedAssemblerDefault() && !HasStatic); 1004 if (C.getArgs().hasFlag(options::OPT_integrated_as, 1005 options::OPT_no_integrated_as, 1006 IsIADefault) && 1007 !C.getArgs().hasArg(options::OPT_save_temps) && 1008 isa<AssembleJobAction>(JA) && 1009 Inputs->size() == 1 && isa<CompileJobAction>(*Inputs->begin())) { 1010 const Tool &Compiler = TC->SelectTool(C,cast<JobAction>(**Inputs->begin())); 1011 if (Compiler.hasIntegratedAssembler()) { 1012 Inputs = &(*Inputs)[0]->getInputs(); 1013 ToolForJob = &Compiler; 1014 } 1015 } 1016 1017 // Otherwise use the tool for the current job. 1018 if (!ToolForJob) 1019 ToolForJob = &TC->SelectTool(C, *JA); 1020 1021 // See if we should use an integrated preprocessor. We do so when we have 1022 // exactly one input, since this is the only use case we care about 1023 // (irrelevant since we don't support combine yet). 1024 if (Inputs->size() == 1 && isa<PreprocessJobAction>(*Inputs->begin()) && 1025 !C.getArgs().hasArg(options::OPT_no_integrated_cpp) && 1026 !C.getArgs().hasArg(options::OPT_traditional_cpp) && 1027 !C.getArgs().hasArg(options::OPT_save_temps) && 1028 ToolForJob->hasIntegratedCPP()) 1029 Inputs = &(*Inputs)[0]->getInputs(); 1030 1031 return *ToolForJob; 1032} 1033 1034void Driver::BuildJobsForAction(Compilation &C, 1035 const Action *A, 1036 const ToolChain *TC, 1037 const char *BoundArch, 1038 bool AtTopLevel, 1039 const char *LinkingOutput, 1040 InputInfo &Result) const { 1041 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs"); 1042 1043 if (const InputAction *IA = dyn_cast<InputAction>(A)) { 1044 // FIXME: It would be nice to not claim this here; maybe the old scheme of 1045 // just using Args was better? 1046 const Arg &Input = IA->getInputArg(); 1047 Input.claim(); 1048 if (Input.getOption().matches(options::OPT_INPUT)) { 1049 const char *Name = Input.getValue(C.getArgs()); 1050 Result = InputInfo(Name, A->getType(), Name); 1051 } else 1052 Result = InputInfo(&Input, A->getType(), ""); 1053 return; 1054 } 1055 1056 if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) { 1057 const ToolChain *TC = &C.getDefaultToolChain(); 1058 1059 std::string Arch; 1060 if (BAA->getArchName()) 1061 TC = Host->CreateToolChain(C.getArgs(), BAA->getArchName()); 1062 1063 BuildJobsForAction(C, *BAA->begin(), TC, BAA->getArchName(), 1064 AtTopLevel, LinkingOutput, Result); 1065 return; 1066 } 1067 1068 const ActionList *Inputs = &A->getInputs(); 1069 1070 const JobAction *JA = cast<JobAction>(A); 1071 const Tool &T = SelectToolForJob(C, TC, JA, Inputs); 1072 1073 // Only use pipes when there is exactly one input. 1074 InputInfoList InputInfos; 1075 for (ActionList::const_iterator it = Inputs->begin(), ie = Inputs->end(); 1076 it != ie; ++it) { 1077 // Treat dsymutil sub-jobs as being at the top-level too, they shouldn't get 1078 // temporary output names. 1079 // 1080 // FIXME: Clean this up. 1081 bool SubJobAtTopLevel = false; 1082 if (AtTopLevel && isa<DsymutilJobAction>(A)) 1083 SubJobAtTopLevel = true; 1084 1085 InputInfo II; 1086 BuildJobsForAction(C, *it, TC, BoundArch, 1087 SubJobAtTopLevel, LinkingOutput, II); 1088 InputInfos.push_back(II); 1089 } 1090 1091 // Always use the first input as the base input. 1092 const char *BaseInput = InputInfos[0].getBaseInput(); 1093 1094 // ... except dsymutil actions, which use their actual input as the base 1095 // input. 1096 if (JA->getType() == types::TY_dSYM) 1097 BaseInput = InputInfos[0].getFilename(); 1098 1099 // Determine the place to write output to, if any. 1100 if (JA->getType() == types::TY_Nothing) { 1101 Result = InputInfo(A->getType(), BaseInput); 1102 } else { 1103 Result = InputInfo(GetNamedOutputPath(C, *JA, BaseInput, AtTopLevel), 1104 A->getType(), BaseInput); 1105 } 1106 1107 if (CCCPrintBindings) { 1108 llvm::errs() << "# \"" << T.getToolChain().getTripleString() << '"' 1109 << " - \"" << T.getName() << "\", inputs: ["; 1110 for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) { 1111 llvm::errs() << InputInfos[i].getAsString(); 1112 if (i + 1 != e) 1113 llvm::errs() << ", "; 1114 } 1115 llvm::errs() << "], output: " << Result.getAsString() << "\n"; 1116 } else { 1117 T.ConstructJob(C, *JA, Result, InputInfos, 1118 C.getArgsForToolChain(TC, BoundArch), LinkingOutput); 1119 } 1120} 1121 1122const char *Driver::GetNamedOutputPath(Compilation &C, 1123 const JobAction &JA, 1124 const char *BaseInput, 1125 bool AtTopLevel) const { 1126 llvm::PrettyStackTraceString CrashInfo("Computing output path"); 1127 // Output to a user requested destination? 1128 if (AtTopLevel && !isa<DsymutilJobAction>(JA)) { 1129 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o)) 1130 return C.addResultFile(FinalOutput->getValue(C.getArgs())); 1131 } 1132 1133 // Default to writing to stdout? 1134 if (AtTopLevel && isa<PreprocessJobAction>(JA)) 1135 return "-"; 1136 1137 // Output to a temporary file? 1138 if (!AtTopLevel && !C.getArgs().hasArg(options::OPT_save_temps)) { 1139 std::string TmpName = 1140 GetTemporaryPath(types::getTypeTempSuffix(JA.getType())); 1141 return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str())); 1142 } 1143 1144 llvm::sys::Path BasePath(BaseInput); 1145 std::string BaseName(BasePath.getLast()); 1146 1147 // Determine what the derived output name should be. 1148 const char *NamedOutput; 1149 if (JA.getType() == types::TY_Image) { 1150 NamedOutput = DefaultImageName.c_str(); 1151 } else { 1152 const char *Suffix = types::getTypeTempSuffix(JA.getType()); 1153 assert(Suffix && "All types used for output should have a suffix."); 1154 1155 std::string::size_type End = std::string::npos; 1156 if (!types::appendSuffixForType(JA.getType())) 1157 End = BaseName.rfind('.'); 1158 std::string Suffixed(BaseName.substr(0, End)); 1159 Suffixed += '.'; 1160 Suffixed += Suffix; 1161 NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str()); 1162 } 1163 1164 // As an annoying special case, PCH generation doesn't strip the pathname. 1165 if (JA.getType() == types::TY_PCH) { 1166 BasePath.eraseComponent(); 1167 if (BasePath.isEmpty()) 1168 BasePath = NamedOutput; 1169 else 1170 BasePath.appendComponent(NamedOutput); 1171 return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str())); 1172 } else { 1173 return C.addResultFile(NamedOutput); 1174 } 1175} 1176 1177std::string Driver::GetFilePath(const char *Name, const ToolChain &TC) const { 1178 // Respect a limited subset of the '-Bprefix' functionality in GCC by 1179 // attempting to use this prefix when lokup up program paths. 1180 if (!PrefixDir.empty()) { 1181 llvm::sys::Path P(PrefixDir); 1182 P.appendComponent(Name); 1183 if (P.exists()) 1184 return P.str(); 1185 } 1186 1187 const ToolChain::path_list &List = TC.getFilePaths(); 1188 for (ToolChain::path_list::const_iterator 1189 it = List.begin(), ie = List.end(); it != ie; ++it) { 1190 llvm::sys::Path P(*it); 1191 P.appendComponent(Name); 1192 if (P.exists()) 1193 return P.str(); 1194 } 1195 1196 return Name; 1197} 1198 1199std::string Driver::GetProgramPath(const char *Name, const ToolChain &TC, 1200 bool WantFile) const { 1201 // Respect a limited subset of the '-Bprefix' functionality in GCC by 1202 // attempting to use this prefix when lokup up program paths. 1203 if (!PrefixDir.empty()) { 1204 llvm::sys::Path P(PrefixDir); 1205 P.appendComponent(Name); 1206 if (WantFile ? P.exists() : P.canExecute()) 1207 return P.str(); 1208 } 1209 1210 const ToolChain::path_list &List = TC.getProgramPaths(); 1211 for (ToolChain::path_list::const_iterator 1212 it = List.begin(), ie = List.end(); it != ie; ++it) { 1213 llvm::sys::Path P(*it); 1214 P.appendComponent(Name); 1215 if (WantFile ? P.exists() : P.canExecute()) 1216 return P.str(); 1217 } 1218 1219 // If all else failed, search the path. 1220 llvm::sys::Path P(llvm::sys::Program::FindProgramByName(Name)); 1221 if (!P.empty()) 1222 return P.str(); 1223 1224 return Name; 1225} 1226 1227std::string Driver::GetTemporaryPath(const char *Suffix) const { 1228 // FIXME: This is lame; sys::Path should provide this function (in particular, 1229 // it should know how to find the temporary files dir). 1230 std::string Error; 1231 const char *TmpDir = ::getenv("TMPDIR"); 1232 if (!TmpDir) 1233 TmpDir = ::getenv("TEMP"); 1234 if (!TmpDir) 1235 TmpDir = ::getenv("TMP"); 1236 if (!TmpDir) 1237 TmpDir = "/tmp"; 1238 llvm::sys::Path P(TmpDir); 1239 P.appendComponent("cc"); 1240 if (P.makeUnique(false, &Error)) { 1241 Diag(clang::diag::err_drv_unable_to_make_temp) << Error; 1242 return ""; 1243 } 1244 1245 // FIXME: Grumble, makeUnique sometimes leaves the file around!? PR3837. 1246 P.eraseFromDisk(false, 0); 1247 1248 P.appendSuffix(Suffix); 1249 return P.str(); 1250} 1251 1252const HostInfo *Driver::GetHostInfo(const char *TripleStr) const { 1253 llvm::PrettyStackTraceString CrashInfo("Constructing host"); 1254 llvm::Triple Triple(TripleStr); 1255 1256 // TCE is an osless target 1257 if (Triple.getArchName() == "tce") 1258 return createTCEHostInfo(*this, Triple); 1259 1260 switch (Triple.getOS()) { 1261 case llvm::Triple::AuroraUX: 1262 return createAuroraUXHostInfo(*this, Triple); 1263 case llvm::Triple::Darwin: 1264 return createDarwinHostInfo(*this, Triple); 1265 case llvm::Triple::DragonFly: 1266 return createDragonFlyHostInfo(*this, Triple); 1267 case llvm::Triple::OpenBSD: 1268 return createOpenBSDHostInfo(*this, Triple); 1269 case llvm::Triple::FreeBSD: 1270 return createFreeBSDHostInfo(*this, Triple); 1271 case llvm::Triple::Minix: 1272 return createMinixHostInfo(*this, Triple); 1273 case llvm::Triple::Linux: 1274 return createLinuxHostInfo(*this, Triple); 1275 case llvm::Triple::Win32: 1276 return createWindowsHostInfo(*this, Triple); 1277 case llvm::Triple::MinGW32: 1278 case llvm::Triple::MinGW64: 1279 return createMinGWHostInfo(*this, Triple); 1280 default: 1281 return createUnknownHostInfo(*this, Triple); 1282 } 1283} 1284 1285bool Driver::ShouldUseClangCompiler(const Compilation &C, const JobAction &JA, 1286 const llvm::Triple &Triple) const { 1287 // Check if user requested no clang, or clang doesn't understand this type (we 1288 // only handle single inputs for now). 1289 if (!CCCUseClang || JA.size() != 1 || 1290 !types::isAcceptedByClang((*JA.begin())->getType())) 1291 return false; 1292 1293 // Otherwise make sure this is an action clang understands. 1294 if (isa<PreprocessJobAction>(JA)) { 1295 if (!CCCUseClangCPP) { 1296 Diag(clang::diag::warn_drv_not_using_clang_cpp); 1297 return false; 1298 } 1299 } else if (!isa<PrecompileJobAction>(JA) && !isa<CompileJobAction>(JA)) 1300 return false; 1301 1302 // Use clang for C++? 1303 if (!CCCUseClangCXX && types::isCXX((*JA.begin())->getType())) { 1304 Diag(clang::diag::warn_drv_not_using_clang_cxx); 1305 return false; 1306 } 1307 1308 // Always use clang for precompiling, AST generation, and rewriting, 1309 // regardless of archs. 1310 if (isa<PrecompileJobAction>(JA) || 1311 types::isOnlyAcceptedByClang(JA.getType())) 1312 return true; 1313 1314 // Finally, don't use clang if this isn't one of the user specified archs to 1315 // build. 1316 if (!CCCClangArchs.empty() && !CCCClangArchs.count(Triple.getArch())) { 1317 Diag(clang::diag::warn_drv_not_using_clang_arch) << Triple.getArchName(); 1318 return false; 1319 } 1320 1321 return true; 1322} 1323 1324/// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the 1325/// grouped values as integers. Numbers which are not provided are set to 0. 1326/// 1327/// \return True if the entire string was parsed (9.2), or all groups were 1328/// parsed (10.3.5extrastuff). 1329bool Driver::GetReleaseVersion(const char *Str, unsigned &Major, 1330 unsigned &Minor, unsigned &Micro, 1331 bool &HadExtra) { 1332 HadExtra = false; 1333 1334 Major = Minor = Micro = 0; 1335 if (*Str == '\0') 1336 return true; 1337 1338 char *End; 1339 Major = (unsigned) strtol(Str, &End, 10); 1340 if (*Str != '\0' && *End == '\0') 1341 return true; 1342 if (*End != '.') 1343 return false; 1344 1345 Str = End+1; 1346 Minor = (unsigned) strtol(Str, &End, 10); 1347 if (*Str != '\0' && *End == '\0') 1348 return true; 1349 if (*End != '.') 1350 return false; 1351 1352 Str = End+1; 1353 Micro = (unsigned) strtol(Str, &End, 10); 1354 if (*Str != '\0' && *End == '\0') 1355 return true; 1356 if (Str == End) 1357 return false; 1358 HadExtra = true; 1359 return true; 1360} 1361