Driver.cpp revision 218893
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#ifdef HAVE_CLANG_CONFIG_H 11# include "clang/Config/config.h" 12#endif 13 14#include "clang/Driver/Driver.h" 15 16#include "clang/Driver/Action.h" 17#include "clang/Driver/Arg.h" 18#include "clang/Driver/ArgList.h" 19#include "clang/Driver/Compilation.h" 20#include "clang/Driver/DriverDiagnostic.h" 21#include "clang/Driver/HostInfo.h" 22#include "clang/Driver/Job.h" 23#include "clang/Driver/OptTable.h" 24#include "clang/Driver/Option.h" 25#include "clang/Driver/Options.h" 26#include "clang/Driver/Tool.h" 27#include "clang/Driver/ToolChain.h" 28#include "clang/Driver/Types.h" 29 30#include "clang/Basic/Version.h" 31 32#include "llvm/Config/config.h" 33#include "llvm/ADT/StringSet.h" 34#include "llvm/ADT/OwningPtr.h" 35#include "llvm/Support/PrettyStackTrace.h" 36#include "llvm/Support/raw_ostream.h" 37#include "llvm/Support/FileSystem.h" 38#include "llvm/Support/Path.h" 39#include "llvm/Support/Program.h" 40 41#include "InputInfo.h" 42 43#include <map> 44 45#ifdef __CYGWIN__ 46#include <cygwin/version.h> 47#if defined(CYGWIN_VERSION_DLL_MAJOR) && CYGWIN_VERSION_DLL_MAJOR<1007 48#define IS_CYGWIN15 1 49#endif 50#endif 51 52using namespace clang::driver; 53using namespace clang; 54 55Driver::Driver(llvm::StringRef _ClangExecutable, 56 llvm::StringRef _DefaultHostTriple, 57 llvm::StringRef _DefaultImageName, 58 bool IsProduction, bool CXXIsProduction, 59 Diagnostic &_Diags) 60 : Opts(createDriverOptTable()), Diags(_Diags), 61 ClangExecutable(_ClangExecutable), DefaultHostTriple(_DefaultHostTriple), 62 DefaultImageName(_DefaultImageName), 63 DriverTitle("clang \"gcc-compatible\" driver"), 64 Host(0), 65 CCPrintOptionsFilename(0), CCPrintHeadersFilename(0), CCCIsCXX(false), 66 CCCEcho(false), CCCPrintBindings(false), CCPrintOptions(false), 67 CCPrintHeaders(false), CCCGenericGCCName("gcc"), 68 CheckInputsExist(true), CCCUseClang(true), CCCUseClangCXX(true), 69 CCCUseClangCPP(true), CCCUsePCH(true), SuppressMissingInputWarning(false) { 70 if (IsProduction) { 71 // In a "production" build, only use clang on architectures we expect to 72 // work, and don't use clang C++. 73 // 74 // During development its more convenient to always have the driver use 75 // clang, but we don't want users to be confused when things don't work, or 76 // to file bugs for things we don't support. 77 CCCClangArchs.insert(llvm::Triple::x86); 78 CCCClangArchs.insert(llvm::Triple::x86_64); 79 CCCClangArchs.insert(llvm::Triple::arm); 80 81 if (!CXXIsProduction) 82 CCCUseClangCXX = false; 83 } 84 85 Name = llvm::sys::path::stem(ClangExecutable); 86 Dir = llvm::sys::path::parent_path(ClangExecutable); 87 88 // Compute the path to the resource directory. 89 llvm::StringRef ClangResourceDir(CLANG_RESOURCE_DIR); 90 llvm::SmallString<128> P(Dir); 91 if (ClangResourceDir != "") 92 llvm::sys::path::append(P, ClangResourceDir); 93 else 94 llvm::sys::path::append(P, "..", "lib", "clang", CLANG_VERSION_STRING); 95 ResourceDir = P.str(); 96} 97 98Driver::~Driver() { 99 delete Opts; 100 delete Host; 101} 102 103InputArgList *Driver::ParseArgStrings(const char **ArgBegin, 104 const char **ArgEnd) { 105 llvm::PrettyStackTraceString CrashInfo("Command line argument parsing"); 106 unsigned MissingArgIndex, MissingArgCount; 107 InputArgList *Args = getOpts().ParseArgs(ArgBegin, ArgEnd, 108 MissingArgIndex, MissingArgCount); 109 110 // Check for missing argument error. 111 if (MissingArgCount) 112 Diag(clang::diag::err_drv_missing_argument) 113 << Args->getArgString(MissingArgIndex) << MissingArgCount; 114 115 // Check for unsupported options. 116 for (ArgList::const_iterator it = Args->begin(), ie = Args->end(); 117 it != ie; ++it) { 118 Arg *A = *it; 119 if (A->getOption().isUnsupported()) { 120 Diag(clang::diag::err_drv_unsupported_opt) << A->getAsString(*Args); 121 continue; 122 } 123 } 124 125 return Args; 126} 127 128DerivedArgList *Driver::TranslateInputArgs(const InputArgList &Args) const { 129 DerivedArgList *DAL = new DerivedArgList(Args); 130 131 bool HasNostdlib = Args.hasArg(options::OPT_nostdlib); 132 for (ArgList::const_iterator it = Args.begin(), 133 ie = Args.end(); it != ie; ++it) { 134 const Arg *A = *it; 135 136 // Unfortunately, we have to parse some forwarding options (-Xassembler, 137 // -Xlinker, -Xpreprocessor) because we either integrate their functionality 138 // (assembler and preprocessor), or bypass a previous driver ('collect2'). 139 140 // Rewrite linker options, to replace --no-demangle with a custom internal 141 // option. 142 if ((A->getOption().matches(options::OPT_Wl_COMMA) || 143 A->getOption().matches(options::OPT_Xlinker)) && 144 A->containsValue("--no-demangle")) { 145 // Add the rewritten no-demangle argument. 146 DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_Xlinker__no_demangle)); 147 148 // Add the remaining values as Xlinker arguments. 149 for (unsigned i = 0, e = A->getNumValues(); i != e; ++i) 150 if (llvm::StringRef(A->getValue(Args, i)) != "--no-demangle") 151 DAL->AddSeparateArg(A, Opts->getOption(options::OPT_Xlinker), 152 A->getValue(Args, i)); 153 154 continue; 155 } 156 157 // Rewrite preprocessor options, to replace -Wp,-MD,FOO which is used by 158 // some build systems. We don't try to be complete here because we don't 159 // care to encourage this usage model. 160 if (A->getOption().matches(options::OPT_Wp_COMMA) && 161 A->getNumValues() == 2 && 162 (A->getValue(Args, 0) == llvm::StringRef("-MD") || 163 A->getValue(Args, 0) == llvm::StringRef("-MMD"))) { 164 // Rewrite to -MD/-MMD along with -MF. 165 if (A->getValue(Args, 0) == llvm::StringRef("-MD")) 166 DAL->AddFlagArg(A, Opts->getOption(options::OPT_MD)); 167 else 168 DAL->AddFlagArg(A, Opts->getOption(options::OPT_MMD)); 169 DAL->AddSeparateArg(A, Opts->getOption(options::OPT_MF), 170 A->getValue(Args, 1)); 171 continue; 172 } 173 174 // Rewrite reserved library names. 175 if (A->getOption().matches(options::OPT_l)) { 176 llvm::StringRef Value = A->getValue(Args); 177 178 // Rewrite unless -nostdlib is present. 179 if (!HasNostdlib && Value == "stdc++") { 180 DAL->AddFlagArg(A, Opts->getOption( 181 options::OPT_Z_reserved_lib_stdcxx)); 182 continue; 183 } 184 185 // Rewrite unconditionally. 186 if (Value == "cc_kext") { 187 DAL->AddFlagArg(A, Opts->getOption( 188 options::OPT_Z_reserved_lib_cckext)); 189 continue; 190 } 191 } 192 193 DAL->append(*it); 194 } 195 196 // Add a default value of -mlinker-version=, if one was given and the user 197 // didn't specify one. 198#if defined(HOST_LINK_VERSION) 199 if (!Args.hasArg(options::OPT_mlinker_version_EQ)) { 200 DAL->AddJoinedArg(0, Opts->getOption(options::OPT_mlinker_version_EQ), 201 HOST_LINK_VERSION); 202 DAL->getLastArg(options::OPT_mlinker_version_EQ)->claim(); 203 } 204#endif 205 206 return DAL; 207} 208 209Compilation *Driver::BuildCompilation(int argc, const char **argv) { 210 llvm::PrettyStackTraceString CrashInfo("Compilation construction"); 211 212 // FIXME: Handle environment options which effect driver behavior, somewhere 213 // (client?). GCC_EXEC_PREFIX, COMPILER_PATH, LIBRARY_PATH, LPATH, 214 // CC_PRINT_OPTIONS. 215 216 // FIXME: What are we going to do with -V and -b? 217 218 // FIXME: This stuff needs to go into the Compilation, not the driver. 219 bool CCCPrintOptions = false, CCCPrintActions = false; 220 221 const char **Start = argv + 1, **End = argv + argc; 222 223 InputArgList *Args = ParseArgStrings(Start, End); 224 225 // -no-canonical-prefixes is used very early in main. 226 Args->ClaimAllArgs(options::OPT_no_canonical_prefixes); 227 228 // Ignore -pipe. 229 Args->ClaimAllArgs(options::OPT_pipe); 230 231 // Extract -ccc args. 232 // 233 // FIXME: We need to figure out where this behavior should live. Most of it 234 // should be outside in the client; the parts that aren't should have proper 235 // options, either by introducing new ones or by overloading gcc ones like -V 236 // or -b. 237 CCCPrintOptions = Args->hasArg(options::OPT_ccc_print_options); 238 CCCPrintActions = Args->hasArg(options::OPT_ccc_print_phases); 239 CCCPrintBindings = Args->hasArg(options::OPT_ccc_print_bindings); 240 CCCIsCXX = Args->hasArg(options::OPT_ccc_cxx) || CCCIsCXX; 241 if (CCCIsCXX) { 242#ifdef IS_CYGWIN15 243 CCCGenericGCCName = "g++-4"; 244#else 245 CCCGenericGCCName = "g++"; 246#endif 247 } 248 CCCEcho = Args->hasArg(options::OPT_ccc_echo); 249 if (const Arg *A = Args->getLastArg(options::OPT_ccc_gcc_name)) 250 CCCGenericGCCName = A->getValue(*Args); 251 CCCUseClangCXX = Args->hasFlag(options::OPT_ccc_clang_cxx, 252 options::OPT_ccc_no_clang_cxx, 253 CCCUseClangCXX); 254 CCCUsePCH = Args->hasFlag(options::OPT_ccc_pch_is_pch, 255 options::OPT_ccc_pch_is_pth); 256 CCCUseClang = !Args->hasArg(options::OPT_ccc_no_clang); 257 CCCUseClangCPP = !Args->hasArg(options::OPT_ccc_no_clang_cpp); 258 if (const Arg *A = Args->getLastArg(options::OPT_ccc_clang_archs)) { 259 llvm::StringRef Cur = A->getValue(*Args); 260 261 CCCClangArchs.clear(); 262 while (!Cur.empty()) { 263 std::pair<llvm::StringRef, llvm::StringRef> Split = Cur.split(','); 264 265 if (!Split.first.empty()) { 266 llvm::Triple::ArchType Arch = 267 llvm::Triple(Split.first, "", "").getArch(); 268 269 if (Arch == llvm::Triple::UnknownArch) 270 Diag(clang::diag::err_drv_invalid_arch_name) << Split.first; 271 272 CCCClangArchs.insert(Arch); 273 } 274 275 Cur = Split.second; 276 } 277 } 278 // FIXME: We shouldn't overwrite the default host triple here, but we have 279 // nowhere else to put this currently. 280 if (const Arg *A = Args->getLastArg(options::OPT_ccc_host_triple)) 281 DefaultHostTriple = A->getValue(*Args); 282 if (const Arg *A = Args->getLastArg(options::OPT_ccc_install_dir)) 283 Dir = InstalledDir = A->getValue(*Args); 284 for (arg_iterator it = Args->filtered_begin(options::OPT_B), 285 ie = Args->filtered_end(); it != ie; ++it) { 286 const Arg *A = *it; 287 A->claim(); 288 PrefixDirs.push_back(A->getValue(*Args, 0)); 289 } 290 291 Host = GetHostInfo(DefaultHostTriple.c_str()); 292 293 // Perform the default argument translations. 294 DerivedArgList *TranslatedArgs = TranslateInputArgs(*Args); 295 296 // The compilation takes ownership of Args. 297 Compilation *C = new Compilation(*this, *Host->CreateToolChain(*Args), Args, 298 TranslatedArgs); 299 300 // FIXME: This behavior shouldn't be here. 301 if (CCCPrintOptions) { 302 PrintOptions(C->getInputArgs()); 303 return C; 304 } 305 306 if (!HandleImmediateArgs(*C)) 307 return C; 308 309 // Construct the list of abstract actions to perform for this compilation. 310 if (Host->useDriverDriver()) 311 BuildUniversalActions(C->getDefaultToolChain(), C->getArgs(), 312 C->getActions()); 313 else 314 BuildActions(C->getDefaultToolChain(), C->getArgs(), C->getActions()); 315 316 if (CCCPrintActions) { 317 PrintActions(*C); 318 return C; 319 } 320 321 BuildJobs(*C); 322 323 return C; 324} 325 326int Driver::ExecuteCompilation(const Compilation &C) const { 327 // Just print if -### was present. 328 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) { 329 C.PrintJob(llvm::errs(), C.getJobs(), "\n", true); 330 return 0; 331 } 332 333 // If there were errors building the compilation, quit now. 334 if (getDiags().hasErrorOccurred()) 335 return 1; 336 337 const Command *FailingCommand = 0; 338 int Res = C.ExecuteJob(C.getJobs(), FailingCommand); 339 340 // Remove temp files. 341 C.CleanupFileList(C.getTempFiles()); 342 343 // If the command succeeded, we are done. 344 if (Res == 0) 345 return Res; 346 347 // Otherwise, remove result files as well. 348 if (!C.getArgs().hasArg(options::OPT_save_temps)) 349 C.CleanupFileList(C.getResultFiles(), true); 350 351 // Print extra information about abnormal failures, if possible. 352 // 353 // This is ad-hoc, but we don't want to be excessively noisy. If the result 354 // status was 1, assume the command failed normally. In particular, if it was 355 // the compiler then assume it gave a reasonable error code. Failures in other 356 // tools are less common, and they generally have worse diagnostics, so always 357 // print the diagnostic there. 358 const Tool &FailingTool = FailingCommand->getCreator(); 359 360 if (!FailingCommand->getCreator().hasGoodDiagnostics() || Res != 1) { 361 // FIXME: See FIXME above regarding result code interpretation. 362 if (Res < 0) 363 Diag(clang::diag::err_drv_command_signalled) 364 << FailingTool.getShortName() << -Res; 365 else 366 Diag(clang::diag::err_drv_command_failed) 367 << FailingTool.getShortName() << Res; 368 } 369 370 return Res; 371} 372 373void Driver::PrintOptions(const ArgList &Args) const { 374 unsigned i = 0; 375 for (ArgList::const_iterator it = Args.begin(), ie = Args.end(); 376 it != ie; ++it, ++i) { 377 Arg *A = *it; 378 llvm::errs() << "Option " << i << " - " 379 << "Name: \"" << A->getOption().getName() << "\", " 380 << "Values: {"; 381 for (unsigned j = 0; j < A->getNumValues(); ++j) { 382 if (j) 383 llvm::errs() << ", "; 384 llvm::errs() << '"' << A->getValue(Args, j) << '"'; 385 } 386 llvm::errs() << "}\n"; 387 } 388} 389 390void Driver::PrintHelp(bool ShowHidden) const { 391 getOpts().PrintHelp(llvm::outs(), Name.c_str(), DriverTitle.c_str(), 392 ShowHidden); 393} 394 395void Driver::PrintVersion(const Compilation &C, llvm::raw_ostream &OS) const { 396 // FIXME: The following handlers should use a callback mechanism, we don't 397 // know what the client would like to do. 398 OS << getClangFullVersion() << '\n'; 399 const ToolChain &TC = C.getDefaultToolChain(); 400 OS << "Target: " << TC.getTripleString() << '\n'; 401 402 // Print the threading model. 403 // 404 // FIXME: Implement correctly. 405 OS << "Thread model: " << "posix" << '\n'; 406} 407 408/// PrintDiagnosticCategories - Implement the --print-diagnostic-categories 409/// option. 410static void PrintDiagnosticCategories(llvm::raw_ostream &OS) { 411 for (unsigned i = 1; // Skip the empty category. 412 const char *CategoryName = DiagnosticIDs::getCategoryNameFromID(i); ++i) 413 OS << i << ',' << CategoryName << '\n'; 414} 415 416bool Driver::HandleImmediateArgs(const Compilation &C) { 417 // The order these options are handled in gcc is all over the place, but we 418 // don't expect inconsistencies w.r.t. that to matter in practice. 419 420 if (C.getArgs().hasArg(options::OPT_dumpmachine)) { 421 llvm::outs() << C.getDefaultToolChain().getTripleString() << '\n'; 422 return false; 423 } 424 425 if (C.getArgs().hasArg(options::OPT_dumpversion)) { 426 // Since -dumpversion is only implemented for pedantic GCC compatibility, we 427 // return an answer which matches our definition of __VERSION__. 428 // 429 // If we want to return a more correct answer some day, then we should 430 // introduce a non-pedantically GCC compatible mode to Clang in which we 431 // provide sensible definitions for -dumpversion, __VERSION__, etc. 432 llvm::outs() << "4.2.1\n"; 433 return false; 434 } 435 436 if (C.getArgs().hasArg(options::OPT__print_diagnostic_categories)) { 437 PrintDiagnosticCategories(llvm::outs()); 438 return false; 439 } 440 441 if (C.getArgs().hasArg(options::OPT__help) || 442 C.getArgs().hasArg(options::OPT__help_hidden)) { 443 PrintHelp(C.getArgs().hasArg(options::OPT__help_hidden)); 444 return false; 445 } 446 447 if (C.getArgs().hasArg(options::OPT__version)) { 448 // Follow gcc behavior and use stdout for --version and stderr for -v. 449 PrintVersion(C, llvm::outs()); 450 return false; 451 } 452 453 if (C.getArgs().hasArg(options::OPT_v) || 454 C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) { 455 PrintVersion(C, llvm::errs()); 456 SuppressMissingInputWarning = true; 457 } 458 459 const ToolChain &TC = C.getDefaultToolChain(); 460 if (C.getArgs().hasArg(options::OPT_print_search_dirs)) { 461 llvm::outs() << "programs: ="; 462 for (ToolChain::path_list::const_iterator it = TC.getProgramPaths().begin(), 463 ie = TC.getProgramPaths().end(); it != ie; ++it) { 464 if (it != TC.getProgramPaths().begin()) 465 llvm::outs() << ':'; 466 llvm::outs() << *it; 467 } 468 llvm::outs() << "\n"; 469 llvm::outs() << "libraries: ="; 470 for (ToolChain::path_list::const_iterator it = TC.getFilePaths().begin(), 471 ie = TC.getFilePaths().end(); it != ie; ++it) { 472 if (it != TC.getFilePaths().begin()) 473 llvm::outs() << ':'; 474 llvm::outs() << *it; 475 } 476 llvm::outs() << "\n"; 477 return false; 478 } 479 480 // FIXME: The following handlers should use a callback mechanism, we don't 481 // know what the client would like to do. 482 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) { 483 llvm::outs() << GetFilePath(A->getValue(C.getArgs()), TC) << "\n"; 484 return false; 485 } 486 487 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_prog_name_EQ)) { 488 llvm::outs() << GetProgramPath(A->getValue(C.getArgs()), TC) << "\n"; 489 return false; 490 } 491 492 if (C.getArgs().hasArg(options::OPT_print_libgcc_file_name)) { 493 llvm::outs() << GetFilePath("libgcc.a", TC) << "\n"; 494 return false; 495 } 496 497 if (C.getArgs().hasArg(options::OPT_print_multi_lib)) { 498 // FIXME: We need tool chain support for this. 499 llvm::outs() << ".;\n"; 500 501 switch (C.getDefaultToolChain().getTriple().getArch()) { 502 default: 503 break; 504 505 case llvm::Triple::x86_64: 506 llvm::outs() << "x86_64;@m64" << "\n"; 507 break; 508 509 case llvm::Triple::ppc64: 510 llvm::outs() << "ppc64;@m64" << "\n"; 511 break; 512 } 513 return false; 514 } 515 516 // FIXME: What is the difference between print-multi-directory and 517 // print-multi-os-directory? 518 if (C.getArgs().hasArg(options::OPT_print_multi_directory) || 519 C.getArgs().hasArg(options::OPT_print_multi_os_directory)) { 520 switch (C.getDefaultToolChain().getTriple().getArch()) { 521 default: 522 case llvm::Triple::x86: 523 case llvm::Triple::ppc: 524 llvm::outs() << "." << "\n"; 525 break; 526 527 case llvm::Triple::x86_64: 528 llvm::outs() << "." << "\n"; 529 break; 530 531 case llvm::Triple::ppc64: 532 llvm::outs() << "ppc64" << "\n"; 533 break; 534 } 535 return false; 536 } 537 538 return true; 539} 540 541static unsigned PrintActions1(const Compilation &C, Action *A, 542 std::map<Action*, unsigned> &Ids) { 543 if (Ids.count(A)) 544 return Ids[A]; 545 546 std::string str; 547 llvm::raw_string_ostream os(str); 548 549 os << Action::getClassName(A->getKind()) << ", "; 550 if (InputAction *IA = dyn_cast<InputAction>(A)) { 551 os << "\"" << IA->getInputArg().getValue(C.getArgs()) << "\""; 552 } else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) { 553 os << '"' << (BIA->getArchName() ? BIA->getArchName() : 554 C.getDefaultToolChain().getArchName()) << '"' 555 << ", {" << PrintActions1(C, *BIA->begin(), Ids) << "}"; 556 } else { 557 os << "{"; 558 for (Action::iterator it = A->begin(), ie = A->end(); it != ie;) { 559 os << PrintActions1(C, *it, Ids); 560 ++it; 561 if (it != ie) 562 os << ", "; 563 } 564 os << "}"; 565 } 566 567 unsigned Id = Ids.size(); 568 Ids[A] = Id; 569 llvm::errs() << Id << ": " << os.str() << ", " 570 << types::getTypeName(A->getType()) << "\n"; 571 572 return Id; 573} 574 575void Driver::PrintActions(const Compilation &C) const { 576 std::map<Action*, unsigned> Ids; 577 for (ActionList::const_iterator it = C.getActions().begin(), 578 ie = C.getActions().end(); it != ie; ++it) 579 PrintActions1(C, *it, Ids); 580} 581 582/// \brief Check whether the given input tree contains any compilation (or 583/// assembly) actions. 584static bool ContainsCompileAction(const Action *A) { 585 if (isa<CompileJobAction>(A) || isa<AssembleJobAction>(A)) 586 return true; 587 588 for (Action::const_iterator it = A->begin(), ie = A->end(); it != ie; ++it) 589 if (ContainsCompileAction(*it)) 590 return true; 591 592 return false; 593} 594 595void Driver::BuildUniversalActions(const ToolChain &TC, 596 const ArgList &Args, 597 ActionList &Actions) const { 598 llvm::PrettyStackTraceString CrashInfo("Building universal build actions"); 599 // Collect the list of architectures. Duplicates are allowed, but should only 600 // be handled once (in the order seen). 601 llvm::StringSet<> ArchNames; 602 llvm::SmallVector<const char *, 4> Archs; 603 for (ArgList::const_iterator it = Args.begin(), ie = Args.end(); 604 it != ie; ++it) { 605 Arg *A = *it; 606 607 if (A->getOption().matches(options::OPT_arch)) { 608 // Validate the option here; we don't save the type here because its 609 // particular spelling may participate in other driver choices. 610 llvm::Triple::ArchType Arch = 611 llvm::Triple::getArchTypeForDarwinArchName(A->getValue(Args)); 612 if (Arch == llvm::Triple::UnknownArch) { 613 Diag(clang::diag::err_drv_invalid_arch_name) 614 << A->getAsString(Args); 615 continue; 616 } 617 618 A->claim(); 619 if (ArchNames.insert(A->getValue(Args))) 620 Archs.push_back(A->getValue(Args)); 621 } 622 } 623 624 // When there is no explicit arch for this platform, make sure we still bind 625 // the architecture (to the default) so that -Xarch_ is handled correctly. 626 if (!Archs.size()) 627 Archs.push_back(0); 628 629 // FIXME: We killed off some others but these aren't yet detected in a 630 // functional manner. If we added information to jobs about which "auxiliary" 631 // files they wrote then we could detect the conflict these cause downstream. 632 if (Archs.size() > 1) { 633 // No recovery needed, the point of this is just to prevent 634 // overwriting the same files. 635 if (const Arg *A = Args.getLastArg(options::OPT_save_temps)) 636 Diag(clang::diag::err_drv_invalid_opt_with_multiple_archs) 637 << A->getAsString(Args); 638 } 639 640 ActionList SingleActions; 641 BuildActions(TC, Args, SingleActions); 642 643 // Add in arch bindings for every top level action, as well as lipo and 644 // dsymutil steps if needed. 645 for (unsigned i = 0, e = SingleActions.size(); i != e; ++i) { 646 Action *Act = SingleActions[i]; 647 648 // Make sure we can lipo this kind of output. If not (and it is an actual 649 // output) then we disallow, since we can't create an output file with the 650 // right name without overwriting it. We could remove this oddity by just 651 // changing the output names to include the arch, which would also fix 652 // -save-temps. Compatibility wins for now. 653 654 if (Archs.size() > 1 && !types::canLipoType(Act->getType())) 655 Diag(clang::diag::err_drv_invalid_output_with_multiple_archs) 656 << types::getTypeName(Act->getType()); 657 658 ActionList Inputs; 659 for (unsigned i = 0, e = Archs.size(); i != e; ++i) { 660 Inputs.push_back(new BindArchAction(Act, Archs[i])); 661 if (i != 0) 662 Inputs.back()->setOwnsInputs(false); 663 } 664 665 // Lipo if necessary, we do it this way because we need to set the arch flag 666 // so that -Xarch_ gets overwritten. 667 if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing) 668 Actions.append(Inputs.begin(), Inputs.end()); 669 else 670 Actions.push_back(new LipoJobAction(Inputs, Act->getType())); 671 672 // Add a 'dsymutil' step if necessary, when debug info is enabled and we 673 // have a compile input. We need to run 'dsymutil' ourselves in such cases 674 // because the debug info will refer to a temporary object file which is 675 // will be removed at the end of the compilation process. 676 if (Act->getType() == types::TY_Image) { 677 Arg *A = Args.getLastArg(options::OPT_g_Group); 678 if (A && !A->getOption().matches(options::OPT_g0) && 679 !A->getOption().matches(options::OPT_gstabs) && 680 ContainsCompileAction(Actions.back())) { 681 ActionList Inputs; 682 Inputs.push_back(Actions.back()); 683 Actions.pop_back(); 684 685 Actions.push_back(new DsymutilJobAction(Inputs, types::TY_dSYM)); 686 } 687 } 688 } 689} 690 691void Driver::BuildActions(const ToolChain &TC, const ArgList &Args, 692 ActionList &Actions) const { 693 llvm::PrettyStackTraceString CrashInfo("Building compilation actions"); 694 // Start by constructing the list of inputs and their types. 695 696 // Track the current user specified (-x) input. We also explicitly track the 697 // argument used to set the type; we only want to claim the type when we 698 // actually use it, so we warn about unused -x arguments. 699 types::ID InputType = types::TY_Nothing; 700 Arg *InputTypeArg = 0; 701 702 llvm::SmallVector<std::pair<types::ID, const Arg*>, 16> Inputs; 703 for (ArgList::const_iterator it = Args.begin(), ie = Args.end(); 704 it != ie; ++it) { 705 Arg *A = *it; 706 707 if (isa<InputOption>(A->getOption())) { 708 const char *Value = A->getValue(Args); 709 types::ID Ty = types::TY_INVALID; 710 711 // Infer the input type if necessary. 712 if (InputType == types::TY_Nothing) { 713 // If there was an explicit arg for this, claim it. 714 if (InputTypeArg) 715 InputTypeArg->claim(); 716 717 // stdin must be handled specially. 718 if (memcmp(Value, "-", 2) == 0) { 719 // If running with -E, treat as a C input (this changes the builtin 720 // macros, for example). This may be overridden by -ObjC below. 721 // 722 // Otherwise emit an error but still use a valid type to avoid 723 // spurious errors (e.g., no inputs). 724 if (!Args.hasArgNoClaim(options::OPT_E)) 725 Diag(clang::diag::err_drv_unknown_stdin_type); 726 Ty = types::TY_C; 727 } else { 728 // Otherwise lookup by extension, and fallback to ObjectType if not 729 // found. We use a host hook here because Darwin at least has its own 730 // idea of what .s is. 731 if (const char *Ext = strrchr(Value, '.')) 732 Ty = TC.LookupTypeForExtension(Ext + 1); 733 734 if (Ty == types::TY_INVALID) 735 Ty = types::TY_Object; 736 737 // If the driver is invoked as C++ compiler (like clang++ or c++) it 738 // should autodetect some input files as C++ for g++ compatibility. 739 if (CCCIsCXX) { 740 types::ID OldTy = Ty; 741 Ty = types::lookupCXXTypeForCType(Ty); 742 743 if (Ty != OldTy) 744 Diag(clang::diag::warn_drv_treating_input_as_cxx) 745 << getTypeName(OldTy) << getTypeName(Ty); 746 } 747 } 748 749 // -ObjC and -ObjC++ override the default language, but only for "source 750 // files". We just treat everything that isn't a linker input as a 751 // source file. 752 // 753 // FIXME: Clean this up if we move the phase sequence into the type. 754 if (Ty != types::TY_Object) { 755 if (Args.hasArg(options::OPT_ObjC)) 756 Ty = types::TY_ObjC; 757 else if (Args.hasArg(options::OPT_ObjCXX)) 758 Ty = types::TY_ObjCXX; 759 } 760 } else { 761 assert(InputTypeArg && "InputType set w/o InputTypeArg"); 762 InputTypeArg->claim(); 763 Ty = InputType; 764 } 765 766 // Check that the file exists, if enabled. 767 if (CheckInputsExist && memcmp(Value, "-", 2) != 0) { 768 llvm::SmallString<64> Path(Value); 769 if (Arg *WorkDir = Args.getLastArg(options::OPT_working_directory)) 770 if (llvm::sys::path::is_absolute(Path.str())) { 771 Path = WorkDir->getValue(Args); 772 llvm::sys::path::append(Path, Value); 773 } 774 775 bool exists = false; 776 if (/*error_code ec =*/llvm::sys::fs::exists(Value, exists) || !exists) 777 Diag(clang::diag::err_drv_no_such_file) << Path.str(); 778 else 779 Inputs.push_back(std::make_pair(Ty, A)); 780 } else 781 Inputs.push_back(std::make_pair(Ty, A)); 782 783 } else if (A->getOption().isLinkerInput()) { 784 // Just treat as object type, we could make a special type for this if 785 // necessary. 786 Inputs.push_back(std::make_pair(types::TY_Object, A)); 787 788 } else if (A->getOption().matches(options::OPT_x)) { 789 InputTypeArg = A; 790 InputType = types::lookupTypeForTypeSpecifier(A->getValue(Args)); 791 792 // Follow gcc behavior and treat as linker input for invalid -x 793 // options. Its not clear why we shouldn't just revert to unknown; but 794 // this isn't very important, we might as well be bug compatible. 795 if (!InputType) { 796 Diag(clang::diag::err_drv_unknown_language) << A->getValue(Args); 797 InputType = types::TY_Object; 798 } 799 } 800 } 801 802 if (!SuppressMissingInputWarning && Inputs.empty()) { 803 Diag(clang::diag::err_drv_no_input_files); 804 return; 805 } 806 807 // Determine which compilation mode we are in. We look for options which 808 // affect the phase, starting with the earliest phases, and record which 809 // option we used to determine the final phase. 810 Arg *FinalPhaseArg = 0; 811 phases::ID FinalPhase; 812 813 // -{E,M,MM} only run the preprocessor. 814 if ((FinalPhaseArg = Args.getLastArg(options::OPT_E)) || 815 (FinalPhaseArg = Args.getLastArg(options::OPT_M, options::OPT_MM))) { 816 FinalPhase = phases::Preprocess; 817 818 // -{fsyntax-only,-analyze,emit-ast,S} only run up to the compiler. 819 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_fsyntax_only)) || 820 (FinalPhaseArg = Args.getLastArg(options::OPT_rewrite_objc)) || 821 (FinalPhaseArg = Args.getLastArg(options::OPT__analyze, 822 options::OPT__analyze_auto)) || 823 (FinalPhaseArg = Args.getLastArg(options::OPT_emit_ast)) || 824 (FinalPhaseArg = Args.getLastArg(options::OPT_S))) { 825 FinalPhase = phases::Compile; 826 827 // -c only runs up to the assembler. 828 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_c))) { 829 FinalPhase = phases::Assemble; 830 831 // Otherwise do everything. 832 } else 833 FinalPhase = phases::Link; 834 835 // Reject -Z* at the top level, these options should never have been exposed 836 // by gcc. 837 if (Arg *A = Args.getLastArg(options::OPT_Z_Joined)) 838 Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args); 839 840 // Construct the actions to perform. 841 ActionList LinkerInputs; 842 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) { 843 types::ID InputType = Inputs[i].first; 844 const Arg *InputArg = Inputs[i].second; 845 846 unsigned NumSteps = types::getNumCompilationPhases(InputType); 847 assert(NumSteps && "Invalid number of steps!"); 848 849 // If the first step comes after the final phase we are doing as part of 850 // this compilation, warn the user about it. 851 phases::ID InitialPhase = types::getCompilationPhase(InputType, 0); 852 if (InitialPhase > FinalPhase) { 853 // Claim here to avoid the more general unused warning. 854 InputArg->claim(); 855 856 // Special case '-E' warning on a previously preprocessed file to make 857 // more sense. 858 if (InitialPhase == phases::Compile && FinalPhase == phases::Preprocess && 859 getPreprocessedType(InputType) == types::TY_INVALID) 860 Diag(clang::diag::warn_drv_preprocessed_input_file_unused) 861 << InputArg->getAsString(Args) 862 << FinalPhaseArg->getOption().getName(); 863 else 864 Diag(clang::diag::warn_drv_input_file_unused) 865 << InputArg->getAsString(Args) 866 << getPhaseName(InitialPhase) 867 << FinalPhaseArg->getOption().getName(); 868 continue; 869 } 870 871 // Build the pipeline for this file. 872 llvm::OwningPtr<Action> Current(new InputAction(*InputArg, InputType)); 873 for (unsigned i = 0; i != NumSteps; ++i) { 874 phases::ID Phase = types::getCompilationPhase(InputType, i); 875 876 // We are done if this step is past what the user requested. 877 if (Phase > FinalPhase) 878 break; 879 880 // Queue linker inputs. 881 if (Phase == phases::Link) { 882 assert(i + 1 == NumSteps && "linking must be final compilation step."); 883 LinkerInputs.push_back(Current.take()); 884 break; 885 } 886 887 // Some types skip the assembler phase (e.g., llvm-bc), but we can't 888 // encode this in the steps because the intermediate type depends on 889 // arguments. Just special case here. 890 if (Phase == phases::Assemble && Current->getType() != types::TY_PP_Asm) 891 continue; 892 893 // Otherwise construct the appropriate action. 894 Current.reset(ConstructPhaseAction(Args, Phase, Current.take())); 895 if (Current->getType() == types::TY_Nothing) 896 break; 897 } 898 899 // If we ended with something, add to the output list. 900 if (Current) 901 Actions.push_back(Current.take()); 902 } 903 904 // Add a link action if necessary. 905 if (!LinkerInputs.empty()) 906 Actions.push_back(new LinkJobAction(LinkerInputs, types::TY_Image)); 907 908 // If we are linking, claim any options which are obviously only used for 909 // compilation. 910 if (FinalPhase == phases::Link) 911 Args.ClaimAllArgs(options::OPT_CompileOnly_Group); 912} 913 914Action *Driver::ConstructPhaseAction(const ArgList &Args, phases::ID Phase, 915 Action *Input) const { 916 llvm::PrettyStackTraceString CrashInfo("Constructing phase actions"); 917 // Build the appropriate action. 918 switch (Phase) { 919 case phases::Link: assert(0 && "link action invalid here."); 920 case phases::Preprocess: { 921 types::ID OutputTy; 922 // -{M, MM} alter the output type. 923 if (Args.hasArg(options::OPT_M, options::OPT_MM)) { 924 OutputTy = types::TY_Dependencies; 925 } else { 926 OutputTy = types::getPreprocessedType(Input->getType()); 927 assert(OutputTy != types::TY_INVALID && 928 "Cannot preprocess this input type!"); 929 } 930 return new PreprocessJobAction(Input, OutputTy); 931 } 932 case phases::Precompile: 933 return new PrecompileJobAction(Input, types::TY_PCH); 934 case phases::Compile: { 935 bool HasO4 = false; 936 if (const Arg *A = Args.getLastArg(options::OPT_O_Group)) 937 HasO4 = A->getOption().matches(options::OPT_O4); 938 939 if (Args.hasArg(options::OPT_fsyntax_only)) { 940 return new CompileJobAction(Input, types::TY_Nothing); 941 } else if (Args.hasArg(options::OPT_rewrite_objc)) { 942 return new CompileJobAction(Input, types::TY_RewrittenObjC); 943 } else if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto)) { 944 return new AnalyzeJobAction(Input, types::TY_Plist); 945 } else if (Args.hasArg(options::OPT_emit_ast)) { 946 return new CompileJobAction(Input, types::TY_AST); 947 } else if (Args.hasArg(options::OPT_emit_llvm) || 948 Args.hasArg(options::OPT_flto) || HasO4) { 949 types::ID Output = 950 Args.hasArg(options::OPT_S) ? types::TY_LTO_IR : types::TY_LTO_BC; 951 return new CompileJobAction(Input, Output); 952 } else { 953 return new CompileJobAction(Input, types::TY_PP_Asm); 954 } 955 } 956 case phases::Assemble: 957 return new AssembleJobAction(Input, types::TY_Object); 958 } 959 960 assert(0 && "invalid phase in ConstructPhaseAction"); 961 return 0; 962} 963 964void Driver::BuildJobs(Compilation &C) const { 965 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs"); 966 967 Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o); 968 969 // It is an error to provide a -o option if we are making multiple output 970 // files. 971 if (FinalOutput) { 972 unsigned NumOutputs = 0; 973 for (ActionList::const_iterator it = C.getActions().begin(), 974 ie = C.getActions().end(); it != ie; ++it) 975 if ((*it)->getType() != types::TY_Nothing) 976 ++NumOutputs; 977 978 if (NumOutputs > 1) { 979 Diag(clang::diag::err_drv_output_argument_with_multiple_files); 980 FinalOutput = 0; 981 } 982 } 983 984 for (ActionList::const_iterator it = C.getActions().begin(), 985 ie = C.getActions().end(); it != ie; ++it) { 986 Action *A = *it; 987 988 // If we are linking an image for multiple archs then the linker wants 989 // -arch_multiple and -final_output <final image name>. Unfortunately, this 990 // doesn't fit in cleanly because we have to pass this information down. 991 // 992 // FIXME: This is a hack; find a cleaner way to integrate this into the 993 // process. 994 const char *LinkingOutput = 0; 995 if (isa<LipoJobAction>(A)) { 996 if (FinalOutput) 997 LinkingOutput = FinalOutput->getValue(C.getArgs()); 998 else 999 LinkingOutput = DefaultImageName.c_str(); 1000 } 1001 1002 InputInfo II; 1003 BuildJobsForAction(C, A, &C.getDefaultToolChain(), 1004 /*BoundArch*/0, 1005 /*AtTopLevel*/ true, 1006 /*LinkingOutput*/ LinkingOutput, 1007 II); 1008 } 1009 1010 // If the user passed -Qunused-arguments or there were errors, don't warn 1011 // about any unused arguments. 1012 if (Diags.hasErrorOccurred() || 1013 C.getArgs().hasArg(options::OPT_Qunused_arguments)) 1014 return; 1015 1016 // Claim -### here. 1017 (void) C.getArgs().hasArg(options::OPT__HASH_HASH_HASH); 1018 1019 for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end(); 1020 it != ie; ++it) { 1021 Arg *A = *it; 1022 1023 // FIXME: It would be nice to be able to send the argument to the 1024 // Diagnostic, so that extra values, position, and so on could be printed. 1025 if (!A->isClaimed()) { 1026 if (A->getOption().hasNoArgumentUnused()) 1027 continue; 1028 1029 // Suppress the warning automatically if this is just a flag, and it is an 1030 // instance of an argument we already claimed. 1031 const Option &Opt = A->getOption(); 1032 if (isa<FlagOption>(Opt)) { 1033 bool DuplicateClaimed = false; 1034 1035 for (arg_iterator it = C.getArgs().filtered_begin(&Opt), 1036 ie = C.getArgs().filtered_end(); it != ie; ++it) { 1037 if ((*it)->isClaimed()) { 1038 DuplicateClaimed = true; 1039 break; 1040 } 1041 } 1042 1043 if (DuplicateClaimed) 1044 continue; 1045 } 1046 1047 Diag(clang::diag::warn_drv_unused_argument) 1048 << A->getAsString(C.getArgs()); 1049 } 1050 } 1051} 1052 1053static const Tool &SelectToolForJob(Compilation &C, const ToolChain *TC, 1054 const JobAction *JA, 1055 const ActionList *&Inputs) { 1056 const Tool *ToolForJob = 0; 1057 1058 // See if we should look for a compiler with an integrated assembler. We match 1059 // bottom up, so what we are actually looking for is an assembler job with a 1060 // compiler input. 1061 1062 // FIXME: This doesn't belong here, but ideally we will support static soon 1063 // anyway. 1064 bool HasStatic = (C.getArgs().hasArg(options::OPT_mkernel) || 1065 C.getArgs().hasArg(options::OPT_static) || 1066 C.getArgs().hasArg(options::OPT_fapple_kext)); 1067 bool IsIADefault = (TC->IsIntegratedAssemblerDefault() && !HasStatic); 1068 if (C.getArgs().hasFlag(options::OPT_integrated_as, 1069 options::OPT_no_integrated_as, 1070 IsIADefault) && 1071 !C.getArgs().hasArg(options::OPT_save_temps) && 1072 isa<AssembleJobAction>(JA) && 1073 Inputs->size() == 1 && isa<CompileJobAction>(*Inputs->begin())) { 1074 const Tool &Compiler = TC->SelectTool(C,cast<JobAction>(**Inputs->begin())); 1075 if (Compiler.hasIntegratedAssembler()) { 1076 Inputs = &(*Inputs)[0]->getInputs(); 1077 ToolForJob = &Compiler; 1078 } 1079 } 1080 1081 // Otherwise use the tool for the current job. 1082 if (!ToolForJob) 1083 ToolForJob = &TC->SelectTool(C, *JA); 1084 1085 // See if we should use an integrated preprocessor. We do so when we have 1086 // exactly one input, since this is the only use case we care about 1087 // (irrelevant since we don't support combine yet). 1088 if (Inputs->size() == 1 && isa<PreprocessJobAction>(*Inputs->begin()) && 1089 !C.getArgs().hasArg(options::OPT_no_integrated_cpp) && 1090 !C.getArgs().hasArg(options::OPT_traditional_cpp) && 1091 !C.getArgs().hasArg(options::OPT_save_temps) && 1092 ToolForJob->hasIntegratedCPP()) 1093 Inputs = &(*Inputs)[0]->getInputs(); 1094 1095 return *ToolForJob; 1096} 1097 1098void Driver::BuildJobsForAction(Compilation &C, 1099 const Action *A, 1100 const ToolChain *TC, 1101 const char *BoundArch, 1102 bool AtTopLevel, 1103 const char *LinkingOutput, 1104 InputInfo &Result) const { 1105 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs"); 1106 1107 if (const InputAction *IA = dyn_cast<InputAction>(A)) { 1108 // FIXME: It would be nice to not claim this here; maybe the old scheme of 1109 // just using Args was better? 1110 const Arg &Input = IA->getInputArg(); 1111 Input.claim(); 1112 if (Input.getOption().matches(options::OPT_INPUT)) { 1113 const char *Name = Input.getValue(C.getArgs()); 1114 Result = InputInfo(Name, A->getType(), Name); 1115 } else 1116 Result = InputInfo(&Input, A->getType(), ""); 1117 return; 1118 } 1119 1120 if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) { 1121 const ToolChain *TC = &C.getDefaultToolChain(); 1122 1123 std::string Arch; 1124 if (BAA->getArchName()) 1125 TC = Host->CreateToolChain(C.getArgs(), BAA->getArchName()); 1126 1127 BuildJobsForAction(C, *BAA->begin(), TC, BAA->getArchName(), 1128 AtTopLevel, LinkingOutput, Result); 1129 return; 1130 } 1131 1132 const ActionList *Inputs = &A->getInputs(); 1133 1134 const JobAction *JA = cast<JobAction>(A); 1135 const Tool &T = SelectToolForJob(C, TC, JA, Inputs); 1136 1137 // Only use pipes when there is exactly one input. 1138 InputInfoList InputInfos; 1139 for (ActionList::const_iterator it = Inputs->begin(), ie = Inputs->end(); 1140 it != ie; ++it) { 1141 // Treat dsymutil sub-jobs as being at the top-level too, they shouldn't get 1142 // temporary output names. 1143 // 1144 // FIXME: Clean this up. 1145 bool SubJobAtTopLevel = false; 1146 if (AtTopLevel && isa<DsymutilJobAction>(A)) 1147 SubJobAtTopLevel = true; 1148 1149 InputInfo II; 1150 BuildJobsForAction(C, *it, TC, BoundArch, 1151 SubJobAtTopLevel, LinkingOutput, II); 1152 InputInfos.push_back(II); 1153 } 1154 1155 // Always use the first input as the base input. 1156 const char *BaseInput = InputInfos[0].getBaseInput(); 1157 1158 // ... except dsymutil actions, which use their actual input as the base 1159 // input. 1160 if (JA->getType() == types::TY_dSYM) 1161 BaseInput = InputInfos[0].getFilename(); 1162 1163 // Determine the place to write output to, if any. 1164 if (JA->getType() == types::TY_Nothing) { 1165 Result = InputInfo(A->getType(), BaseInput); 1166 } else { 1167 Result = InputInfo(GetNamedOutputPath(C, *JA, BaseInput, AtTopLevel), 1168 A->getType(), BaseInput); 1169 } 1170 1171 if (CCCPrintBindings) { 1172 llvm::errs() << "# \"" << T.getToolChain().getTripleString() << '"' 1173 << " - \"" << T.getName() << "\", inputs: ["; 1174 for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) { 1175 llvm::errs() << InputInfos[i].getAsString(); 1176 if (i + 1 != e) 1177 llvm::errs() << ", "; 1178 } 1179 llvm::errs() << "], output: " << Result.getAsString() << "\n"; 1180 } else { 1181 T.ConstructJob(C, *JA, Result, InputInfos, 1182 C.getArgsForToolChain(TC, BoundArch), LinkingOutput); 1183 } 1184} 1185 1186const char *Driver::GetNamedOutputPath(Compilation &C, 1187 const JobAction &JA, 1188 const char *BaseInput, 1189 bool AtTopLevel) const { 1190 llvm::PrettyStackTraceString CrashInfo("Computing output path"); 1191 // Output to a user requested destination? 1192 if (AtTopLevel && !isa<DsymutilJobAction>(JA)) { 1193 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o)) 1194 return C.addResultFile(FinalOutput->getValue(C.getArgs())); 1195 } 1196 1197 // Default to writing to stdout? 1198 if (AtTopLevel && isa<PreprocessJobAction>(JA)) 1199 return "-"; 1200 1201 // Output to a temporary file? 1202 if (!AtTopLevel && !C.getArgs().hasArg(options::OPT_save_temps)) { 1203 std::string TmpName = 1204 GetTemporaryPath(types::getTypeTempSuffix(JA.getType())); 1205 return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str())); 1206 } 1207 1208 llvm::SmallString<128> BasePath(BaseInput); 1209 llvm::StringRef BaseName = llvm::sys::path::filename(BasePath); 1210 1211 // Determine what the derived output name should be. 1212 const char *NamedOutput; 1213 if (JA.getType() == types::TY_Image) { 1214 NamedOutput = DefaultImageName.c_str(); 1215 } else { 1216 const char *Suffix = types::getTypeTempSuffix(JA.getType()); 1217 assert(Suffix && "All types used for output should have a suffix."); 1218 1219 std::string::size_type End = std::string::npos; 1220 if (!types::appendSuffixForType(JA.getType())) 1221 End = BaseName.rfind('.'); 1222 std::string Suffixed(BaseName.substr(0, End)); 1223 Suffixed += '.'; 1224 Suffixed += Suffix; 1225 NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str()); 1226 } 1227 1228 // As an annoying special case, PCH generation doesn't strip the pathname. 1229 if (JA.getType() == types::TY_PCH) { 1230 llvm::sys::path::remove_filename(BasePath); 1231 if (BasePath.empty()) 1232 BasePath = NamedOutput; 1233 else 1234 llvm::sys::path::append(BasePath, NamedOutput); 1235 return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str())); 1236 } else { 1237 return C.addResultFile(NamedOutput); 1238 } 1239} 1240 1241std::string Driver::GetFilePath(const char *Name, const ToolChain &TC) const { 1242 // Respect a limited subset of the '-Bprefix' functionality in GCC by 1243 // attempting to use this prefix when lokup up program paths. 1244 for (Driver::prefix_list::const_iterator it = PrefixDirs.begin(), 1245 ie = PrefixDirs.end(); it != ie; ++it) { 1246 llvm::sys::Path P(*it); 1247 P.appendComponent(Name); 1248 bool Exists; 1249 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) 1250 return P.str(); 1251 } 1252 1253 const ToolChain::path_list &List = TC.getFilePaths(); 1254 for (ToolChain::path_list::const_iterator 1255 it = List.begin(), ie = List.end(); it != ie; ++it) { 1256 llvm::sys::Path P(*it); 1257 P.appendComponent(Name); 1258 bool Exists; 1259 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists) 1260 return P.str(); 1261 } 1262 1263 return Name; 1264} 1265 1266std::string Driver::GetProgramPath(const char *Name, const ToolChain &TC, 1267 bool WantFile) const { 1268 // Respect a limited subset of the '-Bprefix' functionality in GCC by 1269 // attempting to use this prefix when lokup up program paths. 1270 for (Driver::prefix_list::const_iterator it = PrefixDirs.begin(), 1271 ie = PrefixDirs.end(); it != ie; ++it) { 1272 llvm::sys::Path P(*it); 1273 P.appendComponent(Name); 1274 bool Exists; 1275 if (WantFile ? !llvm::sys::fs::exists(P.str(), Exists) && Exists 1276 : P.canExecute()) 1277 return P.str(); 1278 } 1279 1280 const ToolChain::path_list &List = TC.getProgramPaths(); 1281 for (ToolChain::path_list::const_iterator 1282 it = List.begin(), ie = List.end(); it != ie; ++it) { 1283 llvm::sys::Path P(*it); 1284 P.appendComponent(Name); 1285 bool Exists; 1286 if (WantFile ? !llvm::sys::fs::exists(P.str(), Exists) && Exists 1287 : P.canExecute()) 1288 return P.str(); 1289 } 1290 1291 // If all else failed, search the path. 1292 llvm::sys::Path P(llvm::sys::Program::FindProgramByName(Name)); 1293 if (!P.empty()) 1294 return P.str(); 1295 1296 return Name; 1297} 1298 1299std::string Driver::GetTemporaryPath(const char *Suffix) const { 1300 // FIXME: This is lame; sys::Path should provide this function (in particular, 1301 // it should know how to find the temporary files dir). 1302 std::string Error; 1303 const char *TmpDir = ::getenv("TMPDIR"); 1304 if (!TmpDir) 1305 TmpDir = ::getenv("TEMP"); 1306 if (!TmpDir) 1307 TmpDir = ::getenv("TMP"); 1308 if (!TmpDir) 1309 TmpDir = "/tmp"; 1310 llvm::sys::Path P(TmpDir); 1311 P.appendComponent("cc"); 1312 if (P.makeUnique(false, &Error)) { 1313 Diag(clang::diag::err_drv_unable_to_make_temp) << Error; 1314 return ""; 1315 } 1316 1317 // FIXME: Grumble, makeUnique sometimes leaves the file around!? PR3837. 1318 P.eraseFromDisk(false, 0); 1319 1320 P.appendSuffix(Suffix); 1321 return P.str(); 1322} 1323 1324const HostInfo *Driver::GetHostInfo(const char *TripleStr) const { 1325 llvm::PrettyStackTraceString CrashInfo("Constructing host"); 1326 llvm::Triple Triple(TripleStr); 1327 1328 // TCE is an osless target 1329 if (Triple.getArchName() == "tce") 1330 return createTCEHostInfo(*this, Triple); 1331 1332 switch (Triple.getOS()) { 1333 case llvm::Triple::AuroraUX: 1334 return createAuroraUXHostInfo(*this, Triple); 1335 case llvm::Triple::Darwin: 1336 return createDarwinHostInfo(*this, Triple); 1337 case llvm::Triple::DragonFly: 1338 return createDragonFlyHostInfo(*this, Triple); 1339 case llvm::Triple::OpenBSD: 1340 return createOpenBSDHostInfo(*this, Triple); 1341 case llvm::Triple::NetBSD: 1342 return createNetBSDHostInfo(*this, Triple); 1343 case llvm::Triple::FreeBSD: 1344 return createFreeBSDHostInfo(*this, Triple); 1345 case llvm::Triple::Minix: 1346 return createMinixHostInfo(*this, Triple); 1347 case llvm::Triple::Linux: 1348 return createLinuxHostInfo(*this, Triple); 1349 case llvm::Triple::Win32: 1350 return createWindowsHostInfo(*this, Triple); 1351 case llvm::Triple::MinGW32: 1352 return createMinGWHostInfo(*this, Triple); 1353 default: 1354 return createUnknownHostInfo(*this, Triple); 1355 } 1356} 1357 1358bool Driver::ShouldUseClangCompiler(const Compilation &C, const JobAction &JA, 1359 const llvm::Triple &Triple) const { 1360 // Check if user requested no clang, or clang doesn't understand this type (we 1361 // only handle single inputs for now). 1362 if (!CCCUseClang || JA.size() != 1 || 1363 !types::isAcceptedByClang((*JA.begin())->getType())) 1364 return false; 1365 1366 // Otherwise make sure this is an action clang understands. 1367 if (isa<PreprocessJobAction>(JA)) { 1368 if (!CCCUseClangCPP) { 1369 Diag(clang::diag::warn_drv_not_using_clang_cpp); 1370 return false; 1371 } 1372 } else if (!isa<PrecompileJobAction>(JA) && !isa<CompileJobAction>(JA)) 1373 return false; 1374 1375 // Use clang for C++? 1376 if (!CCCUseClangCXX && types::isCXX((*JA.begin())->getType())) { 1377 Diag(clang::diag::warn_drv_not_using_clang_cxx); 1378 return false; 1379 } 1380 1381 // Always use clang for precompiling, AST generation, and rewriting, 1382 // regardless of archs. 1383 if (isa<PrecompileJobAction>(JA) || 1384 types::isOnlyAcceptedByClang(JA.getType())) 1385 return true; 1386 1387 // Finally, don't use clang if this isn't one of the user specified archs to 1388 // build. 1389 if (!CCCClangArchs.empty() && !CCCClangArchs.count(Triple.getArch())) { 1390 Diag(clang::diag::warn_drv_not_using_clang_arch) << Triple.getArchName(); 1391 return false; 1392 } 1393 1394 return true; 1395} 1396 1397/// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the 1398/// grouped values as integers. Numbers which are not provided are set to 0. 1399/// 1400/// \return True if the entire string was parsed (9.2), or all groups were 1401/// parsed (10.3.5extrastuff). 1402bool Driver::GetReleaseVersion(const char *Str, unsigned &Major, 1403 unsigned &Minor, unsigned &Micro, 1404 bool &HadExtra) { 1405 HadExtra = false; 1406 1407 Major = Minor = Micro = 0; 1408 if (*Str == '\0') 1409 return true; 1410 1411 char *End; 1412 Major = (unsigned) strtol(Str, &End, 10); 1413 if (*Str != '\0' && *End == '\0') 1414 return true; 1415 if (*End != '.') 1416 return false; 1417 1418 Str = End+1; 1419 Minor = (unsigned) strtol(Str, &End, 10); 1420 if (*Str != '\0' && *End == '\0') 1421 return true; 1422 if (*End != '.') 1423 return false; 1424 1425 Str = End+1; 1426 Micro = (unsigned) strtol(Str, &End, 10); 1427 if (*Str != '\0' && *End == '\0') 1428 return true; 1429 if (Str == End) 1430 return false; 1431 HadExtra = true; 1432 return true; 1433} 1434