1 //===--- Driver.cpp - Clang GCC Compatible Driver -----------------------*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "clang/Driver/Driver.h"
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"
26 #include "clang/Basic/Version.h"
28 #include "llvm/ADT/StringSet.h"
29 #include "llvm/ADT/OwningPtr.h"
30 #include "llvm/Support/PrettyStackTrace.h"
31 #include "llvm/Support/raw_ostream.h"
32 #include "llvm/System/Path.h"
33 #include "llvm/System/Program.h"
35 #include "InputInfo.h"
39 using namespace clang::driver;
40 using namespace clang;
42 // Used to set values for "production" clang, for releases.
43 // #define USE_PRODUCTION_CLANG
45 Driver::Driver(llvm::StringRef _Name, llvm::StringRef _Dir,
46 llvm::StringRef _DefaultHostTriple,
47 llvm::StringRef _DefaultImageName,
48 bool IsProduction, bool CXXIsProduction,
50 : Opts(createDriverOptTable()), Diags(_Diags),
51 Name(_Name), Dir(_Dir), DefaultHostTriple(_DefaultHostTriple),
52 DefaultImageName(_DefaultImageName),
53 DriverTitle("clang \"gcc-compatible\" driver"),
55 CCCGenericGCCName("gcc"), CCPrintOptionsFilename(0), CCCIsCXX(false),
56 CCCEcho(false), CCCPrintBindings(false), CCPrintOptions(false),
57 CheckInputsExist(true), CCCUseClang(true), CCCUseClangCXX(true),
58 CCCUseClangCPP(true), CCCUsePCH(true), SuppressMissingInputWarning(false) {
60 // In a "production" build, only use clang on architectures we expect to
61 // work, and don't use clang C++.
63 // During development its more convenient to always have the driver use
64 // clang, but we don't want users to be confused when things don't work, or
65 // to file bugs for things we don't support.
66 CCCClangArchs.insert(llvm::Triple::x86);
67 CCCClangArchs.insert(llvm::Triple::x86_64);
68 CCCClangArchs.insert(llvm::Triple::arm);
71 CCCUseClangCXX = false;
74 // Compute the path to the resource directory.
75 llvm::sys::Path P(Dir);
76 P.eraseComponent(); // Remove /bin from foo/bin
77 P.appendComponent("lib");
78 P.appendComponent("clang");
79 P.appendComponent(CLANG_VERSION_STRING);
80 ResourceDir = P.str();
88 InputArgList *Driver::ParseArgStrings(const char **ArgBegin,
89 const char **ArgEnd) {
90 llvm::PrettyStackTraceString CrashInfo("Command line argument parsing");
91 unsigned MissingArgIndex, MissingArgCount;
92 InputArgList *Args = getOpts().ParseArgs(ArgBegin, ArgEnd,
93 MissingArgIndex, MissingArgCount);
95 // Check for missing argument error.
97 Diag(clang::diag::err_drv_missing_argument)
98 << Args->getArgString(MissingArgIndex) << MissingArgCount;
100 // Check for unsupported options.
101 for (ArgList::const_iterator it = Args->begin(), ie = Args->end();
104 if (A->getOption().isUnsupported()) {
105 Diag(clang::diag::err_drv_unsupported_opt) << A->getAsString(*Args);
113 Compilation *Driver::BuildCompilation(int argc, const char **argv) {
114 llvm::PrettyStackTraceString CrashInfo("Compilation construction");
116 // FIXME: Handle environment options which effect driver behavior, somewhere
117 // (client?). GCC_EXEC_PREFIX, COMPILER_PATH, LIBRARY_PATH, LPATH,
120 // FIXME: What are we going to do with -V and -b?
122 // FIXME: This stuff needs to go into the Compilation, not the driver.
123 bool CCCPrintOptions = false, CCCPrintActions = false;
125 const char **Start = argv + 1, **End = argv + argc;
126 const char *HostTriple = DefaultHostTriple.c_str();
128 InputArgList *Args = ParseArgStrings(Start, End);
130 // -no-canonical-prefixes is used very early in main.
131 Args->ClaimAllArgs(options::OPT_no_canonical_prefixes);
133 // Extract -ccc args.
135 // FIXME: We need to figure out where this behavior should live. Most of it
136 // should be outside in the client; the parts that aren't should have proper
137 // options, either by introducing new ones or by overloading gcc ones like -V
139 CCCPrintOptions = Args->hasArg(options::OPT_ccc_print_options);
140 CCCPrintActions = Args->hasArg(options::OPT_ccc_print_phases);
141 CCCPrintBindings = Args->hasArg(options::OPT_ccc_print_bindings);
142 CCCIsCXX = Args->hasArg(options::OPT_ccc_cxx) || CCCIsCXX;
143 CCCEcho = Args->hasArg(options::OPT_ccc_echo);
144 if (const Arg *A = Args->getLastArg(options::OPT_ccc_gcc_name))
145 CCCGenericGCCName = A->getValue(*Args);
146 CCCUseClangCXX = Args->hasFlag(options::OPT_ccc_clang_cxx,
147 options::OPT_ccc_no_clang_cxx,
149 CCCUsePCH = Args->hasFlag(options::OPT_ccc_pch_is_pch,
150 options::OPT_ccc_pch_is_pth);
151 CCCUseClang = !Args->hasArg(options::OPT_ccc_no_clang);
152 CCCUseClangCPP = !Args->hasArg(options::OPT_ccc_no_clang_cpp);
153 if (const Arg *A = Args->getLastArg(options::OPT_ccc_clang_archs)) {
154 llvm::StringRef Cur = A->getValue(*Args);
156 CCCClangArchs.clear();
157 while (!Cur.empty()) {
158 std::pair<llvm::StringRef, llvm::StringRef> Split = Cur.split(',');
160 if (!Split.first.empty()) {
161 llvm::Triple::ArchType Arch =
162 llvm::Triple(Split.first, "", "").getArch();
164 if (Arch == llvm::Triple::UnknownArch)
165 Diag(clang::diag::err_drv_invalid_arch_name) << Split.first;
167 CCCClangArchs.insert(Arch);
173 if (const Arg *A = Args->getLastArg(options::OPT_ccc_host_triple))
174 HostTriple = A->getValue(*Args);
175 if (const Arg *A = Args->getLastArg(options::OPT_ccc_install_dir))
176 Dir = A->getValue(*Args);
177 if (const Arg *A = Args->getLastArg(options::OPT_B))
178 PrefixDir = A->getValue(*Args);
180 Host = GetHostInfo(HostTriple);
182 // The compilation takes ownership of Args.
183 Compilation *C = new Compilation(*this, *Host->CreateToolChain(*Args), Args);
185 // FIXME: This behavior shouldn't be here.
186 if (CCCPrintOptions) {
187 PrintOptions(C->getArgs());
191 if (!HandleImmediateArgs(*C))
194 // Construct the list of abstract actions to perform for this compilation. We
195 // avoid passing a Compilation here simply to enforce the abstraction that
196 // pipelining is not host or toolchain dependent (other than the driver driver
198 if (Host->useDriverDriver())
199 BuildUniversalActions(C->getArgs(), C->getActions());
201 BuildActions(C->getArgs(), C->getActions());
203 if (CCCPrintActions) {
213 int Driver::ExecuteCompilation(const Compilation &C) const {
214 // Just print if -### was present.
215 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
216 C.PrintJob(llvm::errs(), C.getJobs(), "\n", true);
220 // If there were errors building the compilation, quit now.
221 if (getDiags().getNumErrors())
224 const Command *FailingCommand = 0;
225 int Res = C.ExecuteJob(C.getJobs(), FailingCommand);
227 // Remove temp files.
228 C.CleanupFileList(C.getTempFiles());
230 // If the compilation failed, remove result files as well.
231 if (Res != 0 && !C.getArgs().hasArg(options::OPT_save_temps))
232 C.CleanupFileList(C.getResultFiles(), true);
234 // Print extra information about abnormal failures, if possible.
236 // This is ad-hoc, but we don't want to be excessively noisy. If the result
237 // status was 1, assume the command failed normally. In particular, if it
238 // was the compiler then assume it gave a reasonable error code. Failures in
239 // other tools are less common, and they generally have worse diagnostics,
240 // so always print the diagnostic there.
241 const Action &Source = FailingCommand->getSource();
243 if (!FailingCommand->getCreator().hasGoodDiagnostics() || Res != 1) {
244 // FIXME: See FIXME above regarding result code interpretation.
246 Diag(clang::diag::err_drv_command_signalled)
247 << Source.getClassName() << -Res;
249 Diag(clang::diag::err_drv_command_failed)
250 << Source.getClassName() << Res;
257 void Driver::PrintOptions(const ArgList &Args) const {
259 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
260 it != ie; ++it, ++i) {
262 llvm::errs() << "Option " << i << " - "
263 << "Name: \"" << A->getOption().getName() << "\", "
265 for (unsigned j = 0; j < A->getNumValues(); ++j) {
267 llvm::errs() << ", ";
268 llvm::errs() << '"' << A->getValue(Args, j) << '"';
270 llvm::errs() << "}\n";
274 // FIXME: Move -ccc options to real options in the .td file (or eliminate), and
275 // then move to using OptTable::PrintHelp.
276 void Driver::PrintHelp(bool ShowHidden) const {
277 getOpts().PrintHelp(llvm::outs(), Name.c_str(), DriverTitle.c_str(),
281 void Driver::PrintVersion(const Compilation &C, llvm::raw_ostream &OS) const {
282 // FIXME: The following handlers should use a callback mechanism, we don't
283 // know what the client would like to do.
284 OS << getClangFullVersion() << '\n';
285 const ToolChain &TC = C.getDefaultToolChain();
286 OS << "Target: " << TC.getTripleString() << '\n';
288 // Print the threading model.
290 // FIXME: Implement correctly.
291 OS << "Thread model: " << "posix" << '\n';
294 bool Driver::HandleImmediateArgs(const Compilation &C) {
295 // The order these options are handled in in gcc is all over the place, but we
296 // don't expect inconsistencies w.r.t. that to matter in practice.
298 if (C.getArgs().hasArg(options::OPT_dumpversion)) {
299 llvm::outs() << CLANG_VERSION_STRING "\n";
303 if (C.getArgs().hasArg(options::OPT__help) ||
304 C.getArgs().hasArg(options::OPT__help_hidden)) {
305 PrintHelp(C.getArgs().hasArg(options::OPT__help_hidden));
309 if (C.getArgs().hasArg(options::OPT__version)) {
310 // Follow gcc behavior and use stdout for --version and stderr for -v.
311 PrintVersion(C, llvm::outs());
315 if (C.getArgs().hasArg(options::OPT_v) ||
316 C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
317 PrintVersion(C, llvm::errs());
318 SuppressMissingInputWarning = true;
321 const ToolChain &TC = C.getDefaultToolChain();
322 if (C.getArgs().hasArg(options::OPT_print_search_dirs)) {
323 llvm::outs() << "programs: =";
324 for (ToolChain::path_list::const_iterator it = TC.getProgramPaths().begin(),
325 ie = TC.getProgramPaths().end(); it != ie; ++it) {
326 if (it != TC.getProgramPaths().begin())
330 llvm::outs() << "\n";
331 llvm::outs() << "libraries: =";
332 for (ToolChain::path_list::const_iterator it = TC.getFilePaths().begin(),
333 ie = TC.getFilePaths().end(); it != ie; ++it) {
334 if (it != TC.getFilePaths().begin())
338 llvm::outs() << "\n";
342 // FIXME: The following handlers should use a callback mechanism, we don't
343 // know what the client would like to do.
344 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) {
345 llvm::outs() << GetFilePath(A->getValue(C.getArgs()), TC) << "\n";
349 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_prog_name_EQ)) {
350 llvm::outs() << GetProgramPath(A->getValue(C.getArgs()), TC) << "\n";
354 if (C.getArgs().hasArg(options::OPT_print_libgcc_file_name)) {
355 llvm::outs() << GetFilePath("libgcc.a", TC) << "\n";
359 if (C.getArgs().hasArg(options::OPT_print_multi_lib)) {
360 // FIXME: We need tool chain support for this.
361 llvm::outs() << ".;\n";
363 switch (C.getDefaultToolChain().getTriple().getArch()) {
367 case llvm::Triple::x86_64:
368 llvm::outs() << "x86_64;@m64" << "\n";
371 case llvm::Triple::ppc64:
372 llvm::outs() << "ppc64;@m64" << "\n";
378 // FIXME: What is the difference between print-multi-directory and
379 // print-multi-os-directory?
380 if (C.getArgs().hasArg(options::OPT_print_multi_directory) ||
381 C.getArgs().hasArg(options::OPT_print_multi_os_directory)) {
382 switch (C.getDefaultToolChain().getTriple().getArch()) {
384 case llvm::Triple::x86:
385 case llvm::Triple::ppc:
386 llvm::outs() << "." << "\n";
389 case llvm::Triple::x86_64:
390 llvm::outs() << "x86_64" << "\n";
393 case llvm::Triple::ppc64:
394 llvm::outs() << "ppc64" << "\n";
403 static unsigned PrintActions1(const Compilation &C, Action *A,
404 std::map<Action*, unsigned> &Ids) {
409 llvm::raw_string_ostream os(str);
411 os << Action::getClassName(A->getKind()) << ", ";
412 if (InputAction *IA = dyn_cast<InputAction>(A)) {
413 os << "\"" << IA->getInputArg().getValue(C.getArgs()) << "\"";
414 } else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) {
415 os << '"' << (BIA->getArchName() ? BIA->getArchName() :
416 C.getDefaultToolChain().getArchName()) << '"'
417 << ", {" << PrintActions1(C, *BIA->begin(), Ids) << "}";
420 for (Action::iterator it = A->begin(), ie = A->end(); it != ie;) {
421 os << PrintActions1(C, *it, Ids);
429 unsigned Id = Ids.size();
431 llvm::errs() << Id << ": " << os.str() << ", "
432 << types::getTypeName(A->getType()) << "\n";
437 void Driver::PrintActions(const Compilation &C) const {
438 std::map<Action*, unsigned> Ids;
439 for (ActionList::const_iterator it = C.getActions().begin(),
440 ie = C.getActions().end(); it != ie; ++it)
441 PrintActions1(C, *it, Ids);
444 void Driver::BuildUniversalActions(const ArgList &Args,
445 ActionList &Actions) const {
446 llvm::PrettyStackTraceString CrashInfo("Building universal build actions");
447 // Collect the list of architectures. Duplicates are allowed, but should only
448 // be handled once (in the order seen).
449 llvm::StringSet<> ArchNames;
450 llvm::SmallVector<const char *, 4> Archs;
451 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
455 if (A->getOption().matches(options::OPT_arch)) {
456 // Validate the option here; we don't save the type here because its
457 // particular spelling may participate in other driver choices.
458 llvm::Triple::ArchType Arch =
459 llvm::Triple::getArchTypeForDarwinArchName(A->getValue(Args));
460 if (Arch == llvm::Triple::UnknownArch) {
461 Diag(clang::diag::err_drv_invalid_arch_name)
462 << A->getAsString(Args);
467 if (ArchNames.insert(A->getValue(Args)))
468 Archs.push_back(A->getValue(Args));
472 // When there is no explicit arch for this platform, make sure we still bind
473 // the architecture (to the default) so that -Xarch_ is handled correctly.
477 // FIXME: We killed off some others but these aren't yet detected in a
478 // functional manner. If we added information to jobs about which "auxiliary"
479 // files they wrote then we could detect the conflict these cause downstream.
480 if (Archs.size() > 1) {
481 // No recovery needed, the point of this is just to prevent
482 // overwriting the same files.
483 if (const Arg *A = Args.getLastArg(options::OPT_save_temps))
484 Diag(clang::diag::err_drv_invalid_opt_with_multiple_archs)
485 << A->getAsString(Args);
488 ActionList SingleActions;
489 BuildActions(Args, SingleActions);
491 // Add in arch binding and lipo (if necessary) for every top level action.
492 for (unsigned i = 0, e = SingleActions.size(); i != e; ++i) {
493 Action *Act = SingleActions[i];
495 // Make sure we can lipo this kind of output. If not (and it is an actual
496 // output) then we disallow, since we can't create an output file with the
497 // right name without overwriting it. We could remove this oddity by just
498 // changing the output names to include the arch, which would also fix
499 // -save-temps. Compatibility wins for now.
501 if (Archs.size() > 1 && !types::canLipoType(Act->getType()))
502 Diag(clang::diag::err_drv_invalid_output_with_multiple_archs)
503 << types::getTypeName(Act->getType());
506 for (unsigned i = 0, e = Archs.size(); i != e; ++i) {
507 Inputs.push_back(new BindArchAction(Act, Archs[i]));
509 Inputs.back()->setOwnsInputs(false);
512 // Lipo if necessary, we do it this way because we need to set the arch flag
513 // so that -Xarch_ gets overwritten.
514 if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing)
515 Actions.append(Inputs.begin(), Inputs.end());
517 Actions.push_back(new LipoJobAction(Inputs, Act->getType()));
521 void Driver::BuildActions(const ArgList &Args, ActionList &Actions) const {
522 llvm::PrettyStackTraceString CrashInfo("Building compilation actions");
523 // Start by constructing the list of inputs and their types.
525 // Track the current user specified (-x) input. We also explicitly track the
526 // argument used to set the type; we only want to claim the type when we
527 // actually use it, so we warn about unused -x arguments.
528 types::ID InputType = types::TY_Nothing;
529 Arg *InputTypeArg = 0;
531 llvm::SmallVector<std::pair<types::ID, const Arg*>, 16> Inputs;
532 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
536 if (isa<InputOption>(A->getOption())) {
537 const char *Value = A->getValue(Args);
538 types::ID Ty = types::TY_INVALID;
540 // Infer the input type if necessary.
541 if (InputType == types::TY_Nothing) {
542 // If there was an explicit arg for this, claim it.
544 InputTypeArg->claim();
546 // stdin must be handled specially.
547 if (memcmp(Value, "-", 2) == 0) {
548 // If running with -E, treat as a C input (this changes the builtin
549 // macros, for example). This may be overridden by -ObjC below.
551 // Otherwise emit an error but still use a valid type to avoid
552 // spurious errors (e.g., no inputs).
553 if (!Args.hasArgNoClaim(options::OPT_E))
554 Diag(clang::diag::err_drv_unknown_stdin_type);
557 // Otherwise lookup by extension, and fallback to ObjectType if not
558 // found. We use a host hook here because Darwin at least has its own
559 // idea of what .s is.
560 if (const char *Ext = strrchr(Value, '.'))
561 Ty = Host->lookupTypeForExtension(Ext + 1);
563 if (Ty == types::TY_INVALID)
564 Ty = types::TY_Object;
566 // If the driver is invoked as C++ compiler (like clang++ or c++) it
567 // should autodetect some input files as C++ for g++ compatibility.
569 types::ID OldTy = Ty;
570 Ty = types::lookupCXXTypeForCType(Ty);
573 Diag(clang::diag::warn_drv_treating_input_as_cxx)
574 << getTypeName(OldTy) << getTypeName(Ty);
578 // -ObjC and -ObjC++ override the default language, but only for "source
579 // files". We just treat everything that isn't a linker input as a
582 // FIXME: Clean this up if we move the phase sequence into the type.
583 if (Ty != types::TY_Object) {
584 if (Args.hasArg(options::OPT_ObjC))
586 else if (Args.hasArg(options::OPT_ObjCXX))
587 Ty = types::TY_ObjCXX;
590 assert(InputTypeArg && "InputType set w/o InputTypeArg");
591 InputTypeArg->claim();
595 // Check that the file exists, if enabled.
596 if (CheckInputsExist && memcmp(Value, "-", 2) != 0 &&
597 !llvm::sys::Path(Value).exists())
598 Diag(clang::diag::err_drv_no_such_file) << A->getValue(Args);
600 Inputs.push_back(std::make_pair(Ty, A));
602 } else if (A->getOption().isLinkerInput()) {
603 // Just treat as object type, we could make a special type for this if
605 Inputs.push_back(std::make_pair(types::TY_Object, A));
607 } else if (A->getOption().matches(options::OPT_x)) {
609 InputType = types::lookupTypeForTypeSpecifier(A->getValue(Args));
611 // Follow gcc behavior and treat as linker input for invalid -x
612 // options. Its not clear why we shouldn't just revert to unknown; but
613 // this isn't very important, we might as well be bug comatible.
615 Diag(clang::diag::err_drv_unknown_language) << A->getValue(Args);
616 InputType = types::TY_Object;
621 if (!SuppressMissingInputWarning && Inputs.empty()) {
622 Diag(clang::diag::err_drv_no_input_files);
626 // Determine which compilation mode we are in. We look for options which
627 // affect the phase, starting with the earliest phases, and record which
628 // option we used to determine the final phase.
629 Arg *FinalPhaseArg = 0;
630 phases::ID FinalPhase;
632 // -{E,M,MM} only run the preprocessor.
633 if ((FinalPhaseArg = Args.getLastArg(options::OPT_E)) ||
634 (FinalPhaseArg = Args.getLastArg(options::OPT_M)) ||
635 (FinalPhaseArg = Args.getLastArg(options::OPT_MM))) {
636 FinalPhase = phases::Preprocess;
638 // -{fsyntax-only,-analyze,emit-ast,S} only run up to the compiler.
639 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_fsyntax_only)) ||
640 (FinalPhaseArg = Args.getLastArg(options::OPT_rewrite_objc)) ||
641 (FinalPhaseArg = Args.getLastArg(options::OPT__analyze,
642 options::OPT__analyze_auto)) ||
643 (FinalPhaseArg = Args.getLastArg(options::OPT_emit_ast)) ||
644 (FinalPhaseArg = Args.getLastArg(options::OPT_S))) {
645 FinalPhase = phases::Compile;
647 // -c only runs up to the assembler.
648 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_c))) {
649 FinalPhase = phases::Assemble;
651 // Otherwise do everything.
653 FinalPhase = phases::Link;
655 // Reject -Z* at the top level, these options should never have been exposed
657 if (Arg *A = Args.getLastArg(options::OPT_Z_Joined))
658 Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args);
660 // Construct the actions to perform.
661 ActionList LinkerInputs;
662 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
663 types::ID InputType = Inputs[i].first;
664 const Arg *InputArg = Inputs[i].second;
666 unsigned NumSteps = types::getNumCompilationPhases(InputType);
667 assert(NumSteps && "Invalid number of steps!");
669 // If the first step comes after the final phase we are doing as part of
670 // this compilation, warn the user about it.
671 phases::ID InitialPhase = types::getCompilationPhase(InputType, 0);
672 if (InitialPhase > FinalPhase) {
673 // Claim here to avoid the more general unused warning.
676 // Special case '-E' warning on a previously preprocessed file to make
678 if (InitialPhase == phases::Compile && FinalPhase == phases::Preprocess &&
679 getPreprocessedType(InputType) == types::TY_INVALID)
680 Diag(clang::diag::warn_drv_preprocessed_input_file_unused)
681 << InputArg->getAsString(Args)
682 << FinalPhaseArg->getOption().getName();
684 Diag(clang::diag::warn_drv_input_file_unused)
685 << InputArg->getAsString(Args)
686 << getPhaseName(InitialPhase)
687 << FinalPhaseArg->getOption().getName();
691 // Build the pipeline for this file.
692 llvm::OwningPtr<Action> Current(new InputAction(*InputArg, InputType));
693 for (unsigned i = 0; i != NumSteps; ++i) {
694 phases::ID Phase = types::getCompilationPhase(InputType, i);
696 // We are done if this step is past what the user requested.
697 if (Phase > FinalPhase)
700 // Queue linker inputs.
701 if (Phase == phases::Link) {
702 assert(i + 1 == NumSteps && "linking must be final compilation step.");
703 LinkerInputs.push_back(Current.take());
707 // Some types skip the assembler phase (e.g., llvm-bc), but we can't
708 // encode this in the steps because the intermediate type depends on
709 // arguments. Just special case here.
710 if (Phase == phases::Assemble && Current->getType() != types::TY_PP_Asm)
713 // Otherwise construct the appropriate action.
714 Current.reset(ConstructPhaseAction(Args, Phase, Current.take()));
715 if (Current->getType() == types::TY_Nothing)
719 // If we ended with something, add to the output list.
721 Actions.push_back(Current.take());
724 // Add a link action if necessary.
725 if (!LinkerInputs.empty())
726 Actions.push_back(new LinkJobAction(LinkerInputs, types::TY_Image));
728 // If we are linking, claim any options which are obviously only used for
730 if (FinalPhase == phases::Link)
731 Args.ClaimAllArgs(options::OPT_CompileOnly_Group);
734 Action *Driver::ConstructPhaseAction(const ArgList &Args, phases::ID Phase,
735 Action *Input) const {
736 llvm::PrettyStackTraceString CrashInfo("Constructing phase actions");
737 // Build the appropriate action.
739 case phases::Link: assert(0 && "link action invalid here.");
740 case phases::Preprocess: {
742 // -{M, MM} alter the output type.
743 if (Args.hasArg(options::OPT_M) || Args.hasArg(options::OPT_MM)) {
744 OutputTy = types::TY_Dependencies;
746 OutputTy = types::getPreprocessedType(Input->getType());
747 assert(OutputTy != types::TY_INVALID &&
748 "Cannot preprocess this input type!");
750 return new PreprocessJobAction(Input, OutputTy);
752 case phases::Precompile:
753 return new PrecompileJobAction(Input, types::TY_PCH);
754 case phases::Compile: {
756 if (const Arg *A = Args.getLastArg(options::OPT_O_Group))
757 HasO4 = A->getOption().matches(options::OPT_O4);
759 if (Args.hasArg(options::OPT_fsyntax_only)) {
760 return new CompileJobAction(Input, types::TY_Nothing);
761 } else if (Args.hasArg(options::OPT_rewrite_objc)) {
762 return new CompileJobAction(Input, types::TY_RewrittenObjC);
763 } else if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto)) {
764 return new AnalyzeJobAction(Input, types::TY_Plist);
765 } else if (Args.hasArg(options::OPT_emit_ast)) {
766 return new CompileJobAction(Input, types::TY_AST);
767 } else if (Args.hasArg(options::OPT_emit_llvm) ||
768 Args.hasArg(options::OPT_flto) || HasO4) {
770 Args.hasArg(options::OPT_S) ? types::TY_LLVMAsm : types::TY_LLVMBC;
771 return new CompileJobAction(Input, Output);
773 return new CompileJobAction(Input, types::TY_PP_Asm);
776 case phases::Assemble:
777 return new AssembleJobAction(Input, types::TY_Object);
780 assert(0 && "invalid phase in ConstructPhaseAction");
784 void Driver::BuildJobs(Compilation &C) const {
785 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
786 bool SaveTemps = C.getArgs().hasArg(options::OPT_save_temps);
787 bool UsePipes = C.getArgs().hasArg(options::OPT_pipe);
789 // FIXME: Pipes are forcibly disabled until we support executing them.
790 if (!CCCPrintBindings)
793 // -save-temps inhibits pipes.
794 if (SaveTemps && UsePipes)
795 Diag(clang::diag::warn_drv_pipe_ignored_with_save_temps);
797 Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o);
799 // It is an error to provide a -o option if we are making multiple output
802 unsigned NumOutputs = 0;
803 for (ActionList::const_iterator it = C.getActions().begin(),
804 ie = C.getActions().end(); it != ie; ++it)
805 if ((*it)->getType() != types::TY_Nothing)
808 if (NumOutputs > 1) {
809 Diag(clang::diag::err_drv_output_argument_with_multiple_files);
814 for (ActionList::const_iterator it = C.getActions().begin(),
815 ie = C.getActions().end(); it != ie; ++it) {
818 // If we are linking an image for multiple archs then the linker wants
819 // -arch_multiple and -final_output <final image name>. Unfortunately, this
820 // doesn't fit in cleanly because we have to pass this information down.
822 // FIXME: This is a hack; find a cleaner way to integrate this into the
824 const char *LinkingOutput = 0;
825 if (isa<LipoJobAction>(A)) {
827 LinkingOutput = FinalOutput->getValue(C.getArgs());
829 LinkingOutput = DefaultImageName.c_str();
833 BuildJobsForAction(C, A, &C.getDefaultToolChain(),
835 /*CanAcceptPipe*/ true,
837 /*LinkingOutput*/ LinkingOutput,
841 // If the user passed -Qunused-arguments or there were errors, don't warn
842 // about any unused arguments.
843 if (Diags.getNumErrors() ||
844 C.getArgs().hasArg(options::OPT_Qunused_arguments))
848 (void) C.getArgs().hasArg(options::OPT__HASH_HASH_HASH);
850 for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end();
854 // FIXME: It would be nice to be able to send the argument to the
855 // Diagnostic, so that extra values, position, and so on could be printed.
856 if (!A->isClaimed()) {
857 if (A->getOption().hasNoArgumentUnused())
860 // Suppress the warning automatically if this is just a flag, and it is an
861 // instance of an argument we already claimed.
862 const Option &Opt = A->getOption();
863 if (isa<FlagOption>(Opt)) {
864 bool DuplicateClaimed = false;
866 for (arg_iterator it = C.getArgs().filtered_begin(&Opt),
867 ie = C.getArgs().filtered_end(); it != ie; ++it) {
868 if ((*it)->isClaimed()) {
869 DuplicateClaimed = true;
874 if (DuplicateClaimed)
878 Diag(clang::diag::warn_drv_unused_argument)
879 << A->getAsString(C.getArgs());
884 static const Tool &SelectToolForJob(Compilation &C, const ToolChain *TC,
886 const ActionList *&Inputs) {
887 const Tool *ToolForJob = 0;
889 // See if we should look for a compiler with an integrated assembler. We match
890 // bottom up, so what we are actually looking for is an assembler job with a
892 if (C.getArgs().hasArg(options::OPT_integrated_as,
893 options::OPT_no_integrated_as,
894 TC->IsIntegratedAssemblerDefault()) &&
895 !C.getArgs().hasArg(options::OPT_save_temps) &&
896 isa<AssembleJobAction>(JA) &&
897 Inputs->size() == 1 && isa<CompileJobAction>(*Inputs->begin())) {
898 const Tool &Compiler = TC->SelectTool(C,cast<JobAction>(**Inputs->begin()));
899 if (Compiler.hasIntegratedAssembler()) {
900 Inputs = &(*Inputs)[0]->getInputs();
901 ToolForJob = &Compiler;
905 // Otherwise use the tool for the current job.
907 ToolForJob = &TC->SelectTool(C, *JA);
909 // See if we should use an integrated preprocessor. We do so when we have
910 // exactly one input, since this is the only use case we care about
911 // (irrelevant since we don't support combine yet).
912 if (Inputs->size() == 1 && isa<PreprocessJobAction>(*Inputs->begin()) &&
913 !C.getArgs().hasArg(options::OPT_no_integrated_cpp) &&
914 !C.getArgs().hasArg(options::OPT_traditional_cpp) &&
915 !C.getArgs().hasArg(options::OPT_save_temps) &&
916 ToolForJob->hasIntegratedCPP())
917 Inputs = &(*Inputs)[0]->getInputs();
922 void Driver::BuildJobsForAction(Compilation &C,
925 const char *BoundArch,
928 const char *LinkingOutput,
929 InputInfo &Result) const {
930 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
932 bool UsePipes = C.getArgs().hasArg(options::OPT_pipe);
933 // FIXME: Pipes are forcibly disabled until we support executing them.
934 if (!CCCPrintBindings)
937 if (const InputAction *IA = dyn_cast<InputAction>(A)) {
938 // FIXME: It would be nice to not claim this here; maybe the old scheme of
939 // just using Args was better?
940 const Arg &Input = IA->getInputArg();
942 if (isa<PositionalArg>(Input)) {
943 const char *Name = Input.getValue(C.getArgs());
944 Result = InputInfo(Name, A->getType(), Name);
946 Result = InputInfo(&Input, A->getType(), "");
950 if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) {
951 const ToolChain *TC = &C.getDefaultToolChain();
954 if (BAA->getArchName())
955 TC = Host->CreateToolChain(C.getArgs(), BAA->getArchName());
957 BuildJobsForAction(C, *BAA->begin(), TC, BAA->getArchName(),
958 CanAcceptPipe, AtTopLevel, LinkingOutput, Result);
962 const ActionList *Inputs = &A->getInputs();
964 const JobAction *JA = cast<JobAction>(A);
965 const Tool &T = SelectToolForJob(C, TC, JA, Inputs);
967 // Only use pipes when there is exactly one input.
968 bool TryToUsePipeInput = Inputs->size() == 1 && T.acceptsPipedInput();
969 InputInfoList InputInfos;
970 for (ActionList::const_iterator it = Inputs->begin(), ie = Inputs->end();
973 BuildJobsForAction(C, *it, TC, BoundArch, TryToUsePipeInput,
974 /*AtTopLevel*/false, LinkingOutput, II);
975 InputInfos.push_back(II);
978 // Determine if we should output to a pipe.
979 bool OutputToPipe = false;
980 if (CanAcceptPipe && T.canPipeOutput()) {
981 // Some actions default to writing to a pipe if they are the top level phase
982 // and there was no user override.
984 // FIXME: Is there a better way to handle this?
986 if (isa<PreprocessJobAction>(A) && !C.getArgs().hasArg(options::OPT_o))
992 // Figure out where to put the job (pipes).
993 Job *Dest = &C.getJobs();
994 if (InputInfos[0].isPipe()) {
995 assert(TryToUsePipeInput && "Unrequested pipe!");
996 assert(InputInfos.size() == 1 && "Unexpected pipe with multiple inputs.");
997 Dest = &InputInfos[0].getPipe();
1000 // Always use the first input as the base input.
1001 const char *BaseInput = InputInfos[0].getBaseInput();
1003 // Determine the place to write output to (nothing, pipe, or filename) and
1004 // where to put the new job.
1005 if (JA->getType() == types::TY_Nothing) {
1006 Result = InputInfo(A->getType(), BaseInput);
1007 } else if (OutputToPipe) {
1008 // Append to current piped job or create a new one as appropriate.
1009 PipedJob *PJ = dyn_cast<PipedJob>(Dest);
1011 PJ = new PipedJob();
1012 // FIXME: Temporary hack so that -ccc-print-bindings work until we have
1013 // pipe support. Please remove later.
1014 if (!CCCPrintBindings)
1015 cast<JobList>(Dest)->addJob(PJ);
1018 Result = InputInfo(PJ, A->getType(), BaseInput);
1020 Result = InputInfo(GetNamedOutputPath(C, *JA, BaseInput, AtTopLevel),
1021 A->getType(), BaseInput);
1024 if (CCCPrintBindings) {
1025 llvm::errs() << "# \"" << T.getToolChain().getTripleString() << '"'
1026 << " - \"" << T.getName() << "\", inputs: [";
1027 for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) {
1028 llvm::errs() << InputInfos[i].getAsString();
1030 llvm::errs() << ", ";
1032 llvm::errs() << "], output: " << Result.getAsString() << "\n";
1034 T.ConstructJob(C, *JA, *Dest, Result, InputInfos,
1035 C.getArgsForToolChain(TC, BoundArch), LinkingOutput);
1039 const char *Driver::GetNamedOutputPath(Compilation &C,
1040 const JobAction &JA,
1041 const char *BaseInput,
1042 bool AtTopLevel) const {
1043 llvm::PrettyStackTraceString CrashInfo("Computing output path");
1044 // Output to a user requested destination?
1046 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
1047 return C.addResultFile(FinalOutput->getValue(C.getArgs()));
1050 // Output to a temporary file?
1051 if (!AtTopLevel && !C.getArgs().hasArg(options::OPT_save_temps)) {
1052 std::string TmpName =
1053 GetTemporaryPath(types::getTypeTempSuffix(JA.getType()));
1054 return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str()));
1057 llvm::sys::Path BasePath(BaseInput);
1058 std::string BaseName(BasePath.getLast());
1060 // Determine what the derived output name should be.
1061 const char *NamedOutput;
1062 if (JA.getType() == types::TY_Image) {
1063 NamedOutput = DefaultImageName.c_str();
1065 const char *Suffix = types::getTypeTempSuffix(JA.getType());
1066 assert(Suffix && "All types used for output should have a suffix.");
1068 std::string::size_type End = std::string::npos;
1069 if (!types::appendSuffixForType(JA.getType()))
1070 End = BaseName.rfind('.');
1071 std::string Suffixed(BaseName.substr(0, End));
1074 NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str());
1077 // As an annoying special case, PCH generation doesn't strip the pathname.
1078 if (JA.getType() == types::TY_PCH) {
1079 BasePath.eraseComponent();
1080 if (BasePath.isEmpty())
1081 BasePath = NamedOutput;
1083 BasePath.appendComponent(NamedOutput);
1084 return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str()));
1086 return C.addResultFile(NamedOutput);
1090 std::string Driver::GetFilePath(const char *Name, const ToolChain &TC) const {
1091 // Respect a limited subset of the '-Bprefix' functionality in GCC by
1092 // attempting to use this prefix when lokup up program paths.
1093 if (!PrefixDir.empty()) {
1094 llvm::sys::Path P(PrefixDir);
1095 P.appendComponent(Name);
1100 const ToolChain::path_list &List = TC.getFilePaths();
1101 for (ToolChain::path_list::const_iterator
1102 it = List.begin(), ie = List.end(); it != ie; ++it) {
1103 llvm::sys::Path P(*it);
1104 P.appendComponent(Name);
1112 std::string Driver::GetProgramPath(const char *Name, const ToolChain &TC,
1113 bool WantFile) const {
1114 // Respect a limited subset of the '-Bprefix' functionality in GCC by
1115 // attempting to use this prefix when lokup up program paths.
1116 if (!PrefixDir.empty()) {
1117 llvm::sys::Path P(PrefixDir);
1118 P.appendComponent(Name);
1119 if (WantFile ? P.exists() : P.canExecute())
1123 const ToolChain::path_list &List = TC.getProgramPaths();
1124 for (ToolChain::path_list::const_iterator
1125 it = List.begin(), ie = List.end(); it != ie; ++it) {
1126 llvm::sys::Path P(*it);
1127 P.appendComponent(Name);
1128 if (WantFile ? P.exists() : P.canExecute())
1132 // If all else failed, search the path.
1133 llvm::sys::Path P(llvm::sys::Program::FindProgramByName(Name));
1140 std::string Driver::GetTemporaryPath(const char *Suffix) const {
1141 // FIXME: This is lame; sys::Path should provide this function (in particular,
1142 // it should know how to find the temporary files dir).
1144 const char *TmpDir = ::getenv("TMPDIR");
1146 TmpDir = ::getenv("TEMP");
1148 TmpDir = ::getenv("TMP");
1151 llvm::sys::Path P(TmpDir);
1152 P.appendComponent("cc");
1153 if (P.makeUnique(false, &Error)) {
1154 Diag(clang::diag::err_drv_unable_to_make_temp) << Error;
1158 // FIXME: Grumble, makeUnique sometimes leaves the file around!? PR3837.
1159 P.eraseFromDisk(false, 0);
1161 P.appendSuffix(Suffix);
1165 const HostInfo *Driver::GetHostInfo(const char *TripleStr) const {
1166 llvm::PrettyStackTraceString CrashInfo("Constructing host");
1167 llvm::Triple Triple(TripleStr);
1169 // TCE is an osless target
1170 if (Triple.getArchName() == "tce")
1171 return createTCEHostInfo(*this, Triple);
1173 switch (Triple.getOS()) {
1174 case llvm::Triple::AuroraUX:
1175 return createAuroraUXHostInfo(*this, Triple);
1176 case llvm::Triple::Darwin:
1177 return createDarwinHostInfo(*this, Triple);
1178 case llvm::Triple::DragonFly:
1179 return createDragonFlyHostInfo(*this, Triple);
1180 case llvm::Triple::OpenBSD:
1181 return createOpenBSDHostInfo(*this, Triple);
1182 case llvm::Triple::FreeBSD:
1183 return createFreeBSDHostInfo(*this, Triple);
1184 case llvm::Triple::Linux:
1185 return createLinuxHostInfo(*this, Triple);
1187 return createUnknownHostInfo(*this, Triple);
1191 bool Driver::ShouldUseClangCompiler(const Compilation &C, const JobAction &JA,
1192 const llvm::Triple &Triple) const {
1193 // Check if user requested no clang, or clang doesn't understand this type (we
1194 // only handle single inputs for now).
1195 if (!CCCUseClang || JA.size() != 1 ||
1196 !types::isAcceptedByClang((*JA.begin())->getType()))
1199 // Otherwise make sure this is an action clang understands.
1200 if (isa<PreprocessJobAction>(JA)) {
1201 if (!CCCUseClangCPP) {
1202 Diag(clang::diag::warn_drv_not_using_clang_cpp);
1205 } else if (!isa<PrecompileJobAction>(JA) && !isa<CompileJobAction>(JA))
1208 // Use clang for C++?
1209 if (!CCCUseClangCXX && types::isCXX((*JA.begin())->getType())) {
1210 Diag(clang::diag::warn_drv_not_using_clang_cxx);
1214 // Always use clang for precompiling, AST generation, and rewriting,
1215 // regardless of archs.
1216 if (isa<PrecompileJobAction>(JA) || JA.getType() == types::TY_AST ||
1217 JA.getType() == types::TY_RewrittenObjC)
1220 // Finally, don't use clang if this isn't one of the user specified archs to
1222 if (!CCCClangArchs.empty() && !CCCClangArchs.count(Triple.getArch())) {
1223 Diag(clang::diag::warn_drv_not_using_clang_arch) << Triple.getArchName();
1230 /// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the
1231 /// grouped values as integers. Numbers which are not provided are set to 0.
1233 /// \return True if the entire string was parsed (9.2), or all groups were
1234 /// parsed (10.3.5extrastuff).
1235 bool Driver::GetReleaseVersion(const char *Str, unsigned &Major,
1236 unsigned &Minor, unsigned &Micro,
1240 Major = Minor = Micro = 0;
1245 Major = (unsigned) strtol(Str, &End, 10);
1246 if (*Str != '\0' && *End == '\0')
1252 Minor = (unsigned) strtol(Str, &End, 10);
1253 if (*Str != '\0' && *End == '\0')
1259 Micro = (unsigned) strtol(Str, &End, 10);
1260 if (*Str != '\0' && *End == '\0')