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();
242 bool IsFriendlyTool = (isa<PreprocessJobAction>(Source) ||
243 isa<PrecompileJobAction>(Source) ||
244 isa<AnalyzeJobAction>(Source) ||
245 isa<CompileJobAction>(Source));
247 if (!IsFriendlyTool || Res != 1) {
248 // FIXME: See FIXME above regarding result code interpretation.
250 Diag(clang::diag::err_drv_command_signalled)
251 << Source.getClassName() << -Res;
253 Diag(clang::diag::err_drv_command_failed)
254 << Source.getClassName() << Res;
261 void Driver::PrintOptions(const ArgList &Args) const {
263 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
264 it != ie; ++it, ++i) {
266 llvm::errs() << "Option " << i << " - "
267 << "Name: \"" << A->getOption().getName() << "\", "
269 for (unsigned j = 0; j < A->getNumValues(); ++j) {
271 llvm::errs() << ", ";
272 llvm::errs() << '"' << A->getValue(Args, j) << '"';
274 llvm::errs() << "}\n";
278 // FIXME: Move -ccc options to real options in the .td file (or eliminate), and
279 // then move to using OptTable::PrintHelp.
280 void Driver::PrintHelp(bool ShowHidden) const {
281 getOpts().PrintHelp(llvm::outs(), Name.c_str(), DriverTitle.c_str(),
285 void Driver::PrintVersion(const Compilation &C, llvm::raw_ostream &OS) const {
286 // FIXME: The following handlers should use a callback mechanism, we don't
287 // know what the client would like to do.
288 OS << getClangFullVersion() << '\n';
289 const ToolChain &TC = C.getDefaultToolChain();
290 OS << "Target: " << TC.getTripleString() << '\n';
292 // Print the threading model.
294 // FIXME: Implement correctly.
295 OS << "Thread model: " << "posix" << '\n';
298 bool Driver::HandleImmediateArgs(const Compilation &C) {
299 // The order these options are handled in in gcc is all over the place, but we
300 // don't expect inconsistencies w.r.t. that to matter in practice.
302 if (C.getArgs().hasArg(options::OPT_dumpversion)) {
303 llvm::outs() << CLANG_VERSION_STRING "\n";
307 if (C.getArgs().hasArg(options::OPT__help) ||
308 C.getArgs().hasArg(options::OPT__help_hidden)) {
309 PrintHelp(C.getArgs().hasArg(options::OPT__help_hidden));
313 if (C.getArgs().hasArg(options::OPT__version)) {
314 // Follow gcc behavior and use stdout for --version and stderr for -v.
315 PrintVersion(C, llvm::outs());
319 if (C.getArgs().hasArg(options::OPT_v) ||
320 C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
321 PrintVersion(C, llvm::errs());
322 SuppressMissingInputWarning = true;
325 const ToolChain &TC = C.getDefaultToolChain();
326 if (C.getArgs().hasArg(options::OPT_print_search_dirs)) {
327 llvm::outs() << "programs: =";
328 for (ToolChain::path_list::const_iterator it = TC.getProgramPaths().begin(),
329 ie = TC.getProgramPaths().end(); it != ie; ++it) {
330 if (it != TC.getProgramPaths().begin())
334 llvm::outs() << "\n";
335 llvm::outs() << "libraries: =";
336 for (ToolChain::path_list::const_iterator it = TC.getFilePaths().begin(),
337 ie = TC.getFilePaths().end(); it != ie; ++it) {
338 if (it != TC.getFilePaths().begin())
342 llvm::outs() << "\n";
346 // FIXME: The following handlers should use a callback mechanism, we don't
347 // know what the client would like to do.
348 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) {
349 llvm::outs() << GetFilePath(A->getValue(C.getArgs()), TC) << "\n";
353 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_prog_name_EQ)) {
354 llvm::outs() << GetProgramPath(A->getValue(C.getArgs()), TC) << "\n";
358 if (C.getArgs().hasArg(options::OPT_print_libgcc_file_name)) {
359 llvm::outs() << GetFilePath("libgcc.a", TC) << "\n";
363 if (C.getArgs().hasArg(options::OPT_print_multi_lib)) {
364 // FIXME: We need tool chain support for this.
365 llvm::outs() << ".;\n";
367 switch (C.getDefaultToolChain().getTriple().getArch()) {
371 case llvm::Triple::x86_64:
372 llvm::outs() << "x86_64;@m64" << "\n";
375 case llvm::Triple::ppc64:
376 llvm::outs() << "ppc64;@m64" << "\n";
382 // FIXME: What is the difference between print-multi-directory and
383 // print-multi-os-directory?
384 if (C.getArgs().hasArg(options::OPT_print_multi_directory) ||
385 C.getArgs().hasArg(options::OPT_print_multi_os_directory)) {
386 switch (C.getDefaultToolChain().getTriple().getArch()) {
388 case llvm::Triple::x86:
389 case llvm::Triple::ppc:
390 llvm::outs() << "." << "\n";
393 case llvm::Triple::x86_64:
394 llvm::outs() << "x86_64" << "\n";
397 case llvm::Triple::ppc64:
398 llvm::outs() << "ppc64" << "\n";
407 static unsigned PrintActions1(const Compilation &C, Action *A,
408 std::map<Action*, unsigned> &Ids) {
413 llvm::raw_string_ostream os(str);
415 os << Action::getClassName(A->getKind()) << ", ";
416 if (InputAction *IA = dyn_cast<InputAction>(A)) {
417 os << "\"" << IA->getInputArg().getValue(C.getArgs()) << "\"";
418 } else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) {
419 os << '"' << (BIA->getArchName() ? BIA->getArchName() :
420 C.getDefaultToolChain().getArchName()) << '"'
421 << ", {" << PrintActions1(C, *BIA->begin(), Ids) << "}";
424 for (Action::iterator it = A->begin(), ie = A->end(); it != ie;) {
425 os << PrintActions1(C, *it, Ids);
433 unsigned Id = Ids.size();
435 llvm::errs() << Id << ": " << os.str() << ", "
436 << types::getTypeName(A->getType()) << "\n";
441 void Driver::PrintActions(const Compilation &C) const {
442 std::map<Action*, unsigned> Ids;
443 for (ActionList::const_iterator it = C.getActions().begin(),
444 ie = C.getActions().end(); it != ie; ++it)
445 PrintActions1(C, *it, Ids);
448 void Driver::BuildUniversalActions(const ArgList &Args,
449 ActionList &Actions) const {
450 llvm::PrettyStackTraceString CrashInfo("Building universal build actions");
451 // Collect the list of architectures. Duplicates are allowed, but should only
452 // be handled once (in the order seen).
453 llvm::StringSet<> ArchNames;
454 llvm::SmallVector<const char *, 4> Archs;
455 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
459 if (A->getOption().matches(options::OPT_arch)) {
460 // Validate the option here; we don't save the type here because its
461 // particular spelling may participate in other driver choices.
462 llvm::Triple::ArchType Arch =
463 llvm::Triple::getArchTypeForDarwinArchName(A->getValue(Args));
464 if (Arch == llvm::Triple::UnknownArch) {
465 Diag(clang::diag::err_drv_invalid_arch_name)
466 << A->getAsString(Args);
471 if (ArchNames.insert(A->getValue(Args)))
472 Archs.push_back(A->getValue(Args));
476 // When there is no explicit arch for this platform, make sure we still bind
477 // the architecture (to the default) so that -Xarch_ is handled correctly.
481 // FIXME: We killed off some others but these aren't yet detected in a
482 // functional manner. If we added information to jobs about which "auxiliary"
483 // files they wrote then we could detect the conflict these cause downstream.
484 if (Archs.size() > 1) {
485 // No recovery needed, the point of this is just to prevent
486 // overwriting the same files.
487 if (const Arg *A = Args.getLastArg(options::OPT_save_temps))
488 Diag(clang::diag::err_drv_invalid_opt_with_multiple_archs)
489 << A->getAsString(Args);
492 ActionList SingleActions;
493 BuildActions(Args, SingleActions);
495 // Add in arch binding and lipo (if necessary) for every top level action.
496 for (unsigned i = 0, e = SingleActions.size(); i != e; ++i) {
497 Action *Act = SingleActions[i];
499 // Make sure we can lipo this kind of output. If not (and it is an actual
500 // output) then we disallow, since we can't create an output file with the
501 // right name without overwriting it. We could remove this oddity by just
502 // changing the output names to include the arch, which would also fix
503 // -save-temps. Compatibility wins for now.
505 if (Archs.size() > 1 && !types::canLipoType(Act->getType()))
506 Diag(clang::diag::err_drv_invalid_output_with_multiple_archs)
507 << types::getTypeName(Act->getType());
510 for (unsigned i = 0, e = Archs.size(); i != e; ++i) {
511 Inputs.push_back(new BindArchAction(Act, Archs[i]));
513 Inputs.back()->setOwnsInputs(false);
516 // Lipo if necessary, we do it this way because we need to set the arch flag
517 // so that -Xarch_ gets overwritten.
518 if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing)
519 Actions.append(Inputs.begin(), Inputs.end());
521 Actions.push_back(new LipoJobAction(Inputs, Act->getType()));
525 void Driver::BuildActions(const ArgList &Args, ActionList &Actions) const {
526 llvm::PrettyStackTraceString CrashInfo("Building compilation actions");
527 // Start by constructing the list of inputs and their types.
529 // Track the current user specified (-x) input. We also explicitly track the
530 // argument used to set the type; we only want to claim the type when we
531 // actually use it, so we warn about unused -x arguments.
532 types::ID InputType = types::TY_Nothing;
533 Arg *InputTypeArg = 0;
535 llvm::SmallVector<std::pair<types::ID, const Arg*>, 16> Inputs;
536 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
540 if (isa<InputOption>(A->getOption())) {
541 const char *Value = A->getValue(Args);
542 types::ID Ty = types::TY_INVALID;
544 // Infer the input type if necessary.
545 if (InputType == types::TY_Nothing) {
546 // If there was an explicit arg for this, claim it.
548 InputTypeArg->claim();
550 // stdin must be handled specially.
551 if (memcmp(Value, "-", 2) == 0) {
552 // If running with -E, treat as a C input (this changes the builtin
553 // macros, for example). This may be overridden by -ObjC below.
555 // Otherwise emit an error but still use a valid type to avoid
556 // spurious errors (e.g., no inputs).
557 if (!Args.hasArgNoClaim(options::OPT_E))
558 Diag(clang::diag::err_drv_unknown_stdin_type);
561 // Otherwise lookup by extension, and fallback to ObjectType if not
562 // found. We use a host hook here because Darwin at least has its own
563 // idea of what .s is.
564 if (const char *Ext = strrchr(Value, '.'))
565 Ty = Host->lookupTypeForExtension(Ext + 1);
567 if (Ty == types::TY_INVALID)
568 Ty = types::TY_Object;
570 // If the driver is invoked as C++ compiler (like clang++ or c++) it
571 // should autodetect some input files as C++ for g++ compatibility.
573 types::ID OldTy = Ty;
574 Ty = types::lookupCXXTypeForCType(Ty);
577 Diag(clang::diag::warn_drv_treating_input_as_cxx)
578 << getTypeName(OldTy) << getTypeName(Ty);
582 // -ObjC and -ObjC++ override the default language, but only for "source
583 // files". We just treat everything that isn't a linker input as a
586 // FIXME: Clean this up if we move the phase sequence into the type.
587 if (Ty != types::TY_Object) {
588 if (Args.hasArg(options::OPT_ObjC))
590 else if (Args.hasArg(options::OPT_ObjCXX))
591 Ty = types::TY_ObjCXX;
594 assert(InputTypeArg && "InputType set w/o InputTypeArg");
595 InputTypeArg->claim();
599 // Check that the file exists, if enabled.
600 if (CheckInputsExist && memcmp(Value, "-", 2) != 0 &&
601 !llvm::sys::Path(Value).exists())
602 Diag(clang::diag::err_drv_no_such_file) << A->getValue(Args);
604 Inputs.push_back(std::make_pair(Ty, A));
606 } else if (A->getOption().isLinkerInput()) {
607 // Just treat as object type, we could make a special type for this if
609 Inputs.push_back(std::make_pair(types::TY_Object, A));
611 } else if (A->getOption().matches(options::OPT_x)) {
613 InputType = types::lookupTypeForTypeSpecifier(A->getValue(Args));
615 // Follow gcc behavior and treat as linker input for invalid -x
616 // options. Its not clear why we shouldn't just revert to unknown; but
617 // this isn't very important, we might as well be bug comatible.
619 Diag(clang::diag::err_drv_unknown_language) << A->getValue(Args);
620 InputType = types::TY_Object;
625 if (!SuppressMissingInputWarning && Inputs.empty()) {
626 Diag(clang::diag::err_drv_no_input_files);
630 // Determine which compilation mode we are in. We look for options which
631 // affect the phase, starting with the earliest phases, and record which
632 // option we used to determine the final phase.
633 Arg *FinalPhaseArg = 0;
634 phases::ID FinalPhase;
636 // -{E,M,MM} only run the preprocessor.
637 if ((FinalPhaseArg = Args.getLastArg(options::OPT_E)) ||
638 (FinalPhaseArg = Args.getLastArg(options::OPT_M)) ||
639 (FinalPhaseArg = Args.getLastArg(options::OPT_MM))) {
640 FinalPhase = phases::Preprocess;
642 // -{fsyntax-only,-analyze,emit-ast,S} only run up to the compiler.
643 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_fsyntax_only)) ||
644 (FinalPhaseArg = Args.getLastArg(options::OPT_rewrite_objc)) ||
645 (FinalPhaseArg = Args.getLastArg(options::OPT__analyze,
646 options::OPT__analyze_auto)) ||
647 (FinalPhaseArg = Args.getLastArg(options::OPT_emit_ast)) ||
648 (FinalPhaseArg = Args.getLastArg(options::OPT_S))) {
649 FinalPhase = phases::Compile;
651 // -c only runs up to the assembler.
652 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_c))) {
653 FinalPhase = phases::Assemble;
655 // Otherwise do everything.
657 FinalPhase = phases::Link;
659 // Reject -Z* at the top level, these options should never have been exposed
661 if (Arg *A = Args.getLastArg(options::OPT_Z_Joined))
662 Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args);
664 // Construct the actions to perform.
665 ActionList LinkerInputs;
666 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
667 types::ID InputType = Inputs[i].first;
668 const Arg *InputArg = Inputs[i].second;
670 unsigned NumSteps = types::getNumCompilationPhases(InputType);
671 assert(NumSteps && "Invalid number of steps!");
673 // If the first step comes after the final phase we are doing as part of
674 // this compilation, warn the user about it.
675 phases::ID InitialPhase = types::getCompilationPhase(InputType, 0);
676 if (InitialPhase > FinalPhase) {
677 // Claim here to avoid the more general unused warning.
680 // Special case '-E' warning on a previously preprocessed file to make
682 if (InitialPhase == phases::Compile && FinalPhase == phases::Preprocess &&
683 getPreprocessedType(InputType) == types::TY_INVALID)
684 Diag(clang::diag::warn_drv_preprocessed_input_file_unused)
685 << InputArg->getAsString(Args)
686 << FinalPhaseArg->getOption().getName();
688 Diag(clang::diag::warn_drv_input_file_unused)
689 << InputArg->getAsString(Args)
690 << getPhaseName(InitialPhase)
691 << FinalPhaseArg->getOption().getName();
695 // Build the pipeline for this file.
696 llvm::OwningPtr<Action> Current(new InputAction(*InputArg, InputType));
697 for (unsigned i = 0; i != NumSteps; ++i) {
698 phases::ID Phase = types::getCompilationPhase(InputType, i);
700 // We are done if this step is past what the user requested.
701 if (Phase > FinalPhase)
704 // Queue linker inputs.
705 if (Phase == phases::Link) {
706 assert(i + 1 == NumSteps && "linking must be final compilation step.");
707 LinkerInputs.push_back(Current.take());
711 // Some types skip the assembler phase (e.g., llvm-bc), but we can't
712 // encode this in the steps because the intermediate type depends on
713 // arguments. Just special case here.
714 if (Phase == phases::Assemble && Current->getType() != types::TY_PP_Asm)
717 // Otherwise construct the appropriate action.
718 Current.reset(ConstructPhaseAction(Args, Phase, Current.take()));
719 if (Current->getType() == types::TY_Nothing)
723 // If we ended with something, add to the output list.
725 Actions.push_back(Current.take());
728 // Add a link action if necessary.
729 if (!LinkerInputs.empty())
730 Actions.push_back(new LinkJobAction(LinkerInputs, types::TY_Image));
732 // If we are linking, claim any options which are obviously only used for
734 if (FinalPhase == phases::Link)
735 Args.ClaimAllArgs(options::OPT_CompileOnly_Group);
738 Action *Driver::ConstructPhaseAction(const ArgList &Args, phases::ID Phase,
739 Action *Input) const {
740 llvm::PrettyStackTraceString CrashInfo("Constructing phase actions");
741 // Build the appropriate action.
743 case phases::Link: assert(0 && "link action invalid here.");
744 case phases::Preprocess: {
746 // -{M, MM} alter the output type.
747 if (Args.hasArg(options::OPT_M) || Args.hasArg(options::OPT_MM)) {
748 OutputTy = types::TY_Dependencies;
750 OutputTy = types::getPreprocessedType(Input->getType());
751 assert(OutputTy != types::TY_INVALID &&
752 "Cannot preprocess this input type!");
754 return new PreprocessJobAction(Input, OutputTy);
756 case phases::Precompile:
757 return new PrecompileJobAction(Input, types::TY_PCH);
758 case phases::Compile: {
760 if (const Arg *A = Args.getLastArg(options::OPT_O_Group))
761 HasO4 = A->getOption().matches(options::OPT_O4);
763 if (Args.hasArg(options::OPT_fsyntax_only)) {
764 return new CompileJobAction(Input, types::TY_Nothing);
765 } else if (Args.hasArg(options::OPT_rewrite_objc)) {
766 return new CompileJobAction(Input, types::TY_RewrittenObjC);
767 } else if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto)) {
768 return new AnalyzeJobAction(Input, types::TY_Plist);
769 } else if (Args.hasArg(options::OPT_emit_ast)) {
770 return new CompileJobAction(Input, types::TY_AST);
771 } else if (Args.hasArg(options::OPT_emit_llvm) ||
772 Args.hasArg(options::OPT_flto) || HasO4) {
774 Args.hasArg(options::OPT_S) ? types::TY_LLVMAsm : types::TY_LLVMBC;
775 return new CompileJobAction(Input, Output);
777 return new CompileJobAction(Input, types::TY_PP_Asm);
780 case phases::Assemble:
781 return new AssembleJobAction(Input, types::TY_Object);
784 assert(0 && "invalid phase in ConstructPhaseAction");
788 void Driver::BuildJobs(Compilation &C) const {
789 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
790 bool SaveTemps = C.getArgs().hasArg(options::OPT_save_temps);
791 bool UsePipes = C.getArgs().hasArg(options::OPT_pipe);
793 // FIXME: Pipes are forcibly disabled until we support executing them.
794 if (!CCCPrintBindings)
797 // -save-temps inhibits pipes.
798 if (SaveTemps && UsePipes)
799 Diag(clang::diag::warn_drv_pipe_ignored_with_save_temps);
801 Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o);
803 // It is an error to provide a -o option if we are making multiple output
806 unsigned NumOutputs = 0;
807 for (ActionList::const_iterator it = C.getActions().begin(),
808 ie = C.getActions().end(); it != ie; ++it)
809 if ((*it)->getType() != types::TY_Nothing)
812 if (NumOutputs > 1) {
813 Diag(clang::diag::err_drv_output_argument_with_multiple_files);
818 for (ActionList::const_iterator it = C.getActions().begin(),
819 ie = C.getActions().end(); it != ie; ++it) {
822 // If we are linking an image for multiple archs then the linker wants
823 // -arch_multiple and -final_output <final image name>. Unfortunately, this
824 // doesn't fit in cleanly because we have to pass this information down.
826 // FIXME: This is a hack; find a cleaner way to integrate this into the
828 const char *LinkingOutput = 0;
829 if (isa<LipoJobAction>(A)) {
831 LinkingOutput = FinalOutput->getValue(C.getArgs());
833 LinkingOutput = DefaultImageName.c_str();
837 BuildJobsForAction(C, A, &C.getDefaultToolChain(),
839 /*CanAcceptPipe*/ true,
841 /*LinkingOutput*/ LinkingOutput,
845 // If the user passed -Qunused-arguments or there were errors, don't warn
846 // about any unused arguments.
847 if (Diags.getNumErrors() ||
848 C.getArgs().hasArg(options::OPT_Qunused_arguments))
852 (void) C.getArgs().hasArg(options::OPT__HASH_HASH_HASH);
854 for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end();
858 // FIXME: It would be nice to be able to send the argument to the
859 // Diagnostic, so that extra values, position, and so on could be printed.
860 if (!A->isClaimed()) {
861 if (A->getOption().hasNoArgumentUnused())
864 // Suppress the warning automatically if this is just a flag, and it is an
865 // instance of an argument we already claimed.
866 const Option &Opt = A->getOption();
867 if (isa<FlagOption>(Opt)) {
868 bool DuplicateClaimed = false;
870 for (arg_iterator it = C.getArgs().filtered_begin(&Opt),
871 ie = C.getArgs().filtered_end(); it != ie; ++it) {
872 if ((*it)->isClaimed()) {
873 DuplicateClaimed = true;
878 if (DuplicateClaimed)
882 Diag(clang::diag::warn_drv_unused_argument)
883 << A->getAsString(C.getArgs());
888 static const Tool &SelectToolForJob(Compilation &C, const ToolChain *TC,
890 const ActionList *&Inputs) {
891 const Tool *ToolForJob = 0;
893 // See if we should look for a compiler with an integrated assembler. We match
894 // bottom up, so what we are actually looking for is an assembler job with a
896 if (C.getArgs().hasArg(options::OPT_integrated_as,
897 options::OPT_no_integrated_as,
898 TC->IsIntegratedAssemblerDefault()) &&
899 !C.getArgs().hasArg(options::OPT_save_temps) &&
900 isa<AssembleJobAction>(JA) &&
901 Inputs->size() == 1 && isa<CompileJobAction>(*Inputs->begin())) {
902 const Tool &Compiler = TC->SelectTool(C,cast<JobAction>(**Inputs->begin()));
903 if (Compiler.hasIntegratedAssembler()) {
904 Inputs = &(*Inputs)[0]->getInputs();
905 ToolForJob = &Compiler;
909 // Otherwise use the tool for the current job.
911 ToolForJob = &TC->SelectTool(C, *JA);
913 // See if we should use an integrated preprocessor. We do so when we have
914 // exactly one input, since this is the only use case we care about
915 // (irrelevant since we don't support combine yet).
916 if (Inputs->size() == 1 && isa<PreprocessJobAction>(*Inputs->begin()) &&
917 !C.getArgs().hasArg(options::OPT_no_integrated_cpp) &&
918 !C.getArgs().hasArg(options::OPT_traditional_cpp) &&
919 !C.getArgs().hasArg(options::OPT_save_temps) &&
920 ToolForJob->hasIntegratedCPP())
921 Inputs = &(*Inputs)[0]->getInputs();
926 void Driver::BuildJobsForAction(Compilation &C,
929 const char *BoundArch,
932 const char *LinkingOutput,
933 InputInfo &Result) const {
934 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
936 bool UsePipes = C.getArgs().hasArg(options::OPT_pipe);
937 // FIXME: Pipes are forcibly disabled until we support executing them.
938 if (!CCCPrintBindings)
941 if (const InputAction *IA = dyn_cast<InputAction>(A)) {
942 // FIXME: It would be nice to not claim this here; maybe the old scheme of
943 // just using Args was better?
944 const Arg &Input = IA->getInputArg();
946 if (isa<PositionalArg>(Input)) {
947 const char *Name = Input.getValue(C.getArgs());
948 Result = InputInfo(Name, A->getType(), Name);
950 Result = InputInfo(&Input, A->getType(), "");
954 if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) {
955 const ToolChain *TC = &C.getDefaultToolChain();
958 if (BAA->getArchName())
959 TC = Host->CreateToolChain(C.getArgs(), BAA->getArchName());
961 BuildJobsForAction(C, *BAA->begin(), TC, BAA->getArchName(),
962 CanAcceptPipe, AtTopLevel, LinkingOutput, Result);
966 const ActionList *Inputs = &A->getInputs();
968 const JobAction *JA = cast<JobAction>(A);
969 const Tool &T = SelectToolForJob(C, TC, JA, Inputs);
971 // Only use pipes when there is exactly one input.
972 bool TryToUsePipeInput = Inputs->size() == 1 && T.acceptsPipedInput();
973 InputInfoList InputInfos;
974 for (ActionList::const_iterator it = Inputs->begin(), ie = Inputs->end();
977 BuildJobsForAction(C, *it, TC, BoundArch, TryToUsePipeInput,
978 /*AtTopLevel*/false, LinkingOutput, II);
979 InputInfos.push_back(II);
982 // Determine if we should output to a pipe.
983 bool OutputToPipe = false;
984 if (CanAcceptPipe && T.canPipeOutput()) {
985 // Some actions default to writing to a pipe if they are the top level phase
986 // and there was no user override.
988 // FIXME: Is there a better way to handle this?
990 if (isa<PreprocessJobAction>(A) && !C.getArgs().hasArg(options::OPT_o))
996 // Figure out where to put the job (pipes).
997 Job *Dest = &C.getJobs();
998 if (InputInfos[0].isPipe()) {
999 assert(TryToUsePipeInput && "Unrequested pipe!");
1000 assert(InputInfos.size() == 1 && "Unexpected pipe with multiple inputs.");
1001 Dest = &InputInfos[0].getPipe();
1004 // Always use the first input as the base input.
1005 const char *BaseInput = InputInfos[0].getBaseInput();
1007 // Determine the place to write output to (nothing, pipe, or filename) and
1008 // where to put the new job.
1009 if (JA->getType() == types::TY_Nothing) {
1010 Result = InputInfo(A->getType(), BaseInput);
1011 } else if (OutputToPipe) {
1012 // Append to current piped job or create a new one as appropriate.
1013 PipedJob *PJ = dyn_cast<PipedJob>(Dest);
1015 PJ = new PipedJob();
1016 // FIXME: Temporary hack so that -ccc-print-bindings work until we have
1017 // pipe support. Please remove later.
1018 if (!CCCPrintBindings)
1019 cast<JobList>(Dest)->addJob(PJ);
1022 Result = InputInfo(PJ, A->getType(), BaseInput);
1024 Result = InputInfo(GetNamedOutputPath(C, *JA, BaseInput, AtTopLevel),
1025 A->getType(), BaseInput);
1028 if (CCCPrintBindings) {
1029 llvm::errs() << "# \"" << T.getToolChain().getTripleString() << '"'
1030 << " - \"" << T.getName() << "\", inputs: [";
1031 for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) {
1032 llvm::errs() << InputInfos[i].getAsString();
1034 llvm::errs() << ", ";
1036 llvm::errs() << "], output: " << Result.getAsString() << "\n";
1038 T.ConstructJob(C, *JA, *Dest, Result, InputInfos,
1039 C.getArgsForToolChain(TC, BoundArch), LinkingOutput);
1043 const char *Driver::GetNamedOutputPath(Compilation &C,
1044 const JobAction &JA,
1045 const char *BaseInput,
1046 bool AtTopLevel) const {
1047 llvm::PrettyStackTraceString CrashInfo("Computing output path");
1048 // Output to a user requested destination?
1050 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
1051 return C.addResultFile(FinalOutput->getValue(C.getArgs()));
1054 // Output to a temporary file?
1055 if (!AtTopLevel && !C.getArgs().hasArg(options::OPT_save_temps)) {
1056 std::string TmpName =
1057 GetTemporaryPath(types::getTypeTempSuffix(JA.getType()));
1058 return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str()));
1061 llvm::sys::Path BasePath(BaseInput);
1062 std::string BaseName(BasePath.getLast());
1064 // Determine what the derived output name should be.
1065 const char *NamedOutput;
1066 if (JA.getType() == types::TY_Image) {
1067 NamedOutput = DefaultImageName.c_str();
1069 const char *Suffix = types::getTypeTempSuffix(JA.getType());
1070 assert(Suffix && "All types used for output should have a suffix.");
1072 std::string::size_type End = std::string::npos;
1073 if (!types::appendSuffixForType(JA.getType()))
1074 End = BaseName.rfind('.');
1075 std::string Suffixed(BaseName.substr(0, End));
1078 NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str());
1081 // As an annoying special case, PCH generation doesn't strip the pathname.
1082 if (JA.getType() == types::TY_PCH) {
1083 BasePath.eraseComponent();
1084 if (BasePath.isEmpty())
1085 BasePath = NamedOutput;
1087 BasePath.appendComponent(NamedOutput);
1088 return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str()));
1090 return C.addResultFile(NamedOutput);
1094 std::string Driver::GetFilePath(const char *Name, const ToolChain &TC) const {
1095 // Respect a limited subset of the '-Bprefix' functionality in GCC by
1096 // attempting to use this prefix when lokup up program paths.
1097 if (!PrefixDir.empty()) {
1098 llvm::sys::Path P(PrefixDir);
1099 P.appendComponent(Name);
1104 const ToolChain::path_list &List = TC.getFilePaths();
1105 for (ToolChain::path_list::const_iterator
1106 it = List.begin(), ie = List.end(); it != ie; ++it) {
1107 llvm::sys::Path P(*it);
1108 P.appendComponent(Name);
1116 std::string Driver::GetProgramPath(const char *Name, const ToolChain &TC,
1117 bool WantFile) const {
1118 // Respect a limited subset of the '-Bprefix' functionality in GCC by
1119 // attempting to use this prefix when lokup up program paths.
1120 if (!PrefixDir.empty()) {
1121 llvm::sys::Path P(PrefixDir);
1122 P.appendComponent(Name);
1123 if (WantFile ? P.exists() : P.canExecute())
1127 const ToolChain::path_list &List = TC.getProgramPaths();
1128 for (ToolChain::path_list::const_iterator
1129 it = List.begin(), ie = List.end(); it != ie; ++it) {
1130 llvm::sys::Path P(*it);
1131 P.appendComponent(Name);
1132 if (WantFile ? P.exists() : P.canExecute())
1136 // If all else failed, search the path.
1137 llvm::sys::Path P(llvm::sys::Program::FindProgramByName(Name));
1144 std::string Driver::GetTemporaryPath(const char *Suffix) const {
1145 // FIXME: This is lame; sys::Path should provide this function (in particular,
1146 // it should know how to find the temporary files dir).
1148 const char *TmpDir = ::getenv("TMPDIR");
1150 TmpDir = ::getenv("TEMP");
1152 TmpDir = ::getenv("TMP");
1155 llvm::sys::Path P(TmpDir);
1156 P.appendComponent("cc");
1157 if (P.makeUnique(false, &Error)) {
1158 Diag(clang::diag::err_drv_unable_to_make_temp) << Error;
1162 // FIXME: Grumble, makeUnique sometimes leaves the file around!? PR3837.
1163 P.eraseFromDisk(false, 0);
1165 P.appendSuffix(Suffix);
1169 const HostInfo *Driver::GetHostInfo(const char *TripleStr) const {
1170 llvm::PrettyStackTraceString CrashInfo("Constructing host");
1171 llvm::Triple Triple(TripleStr);
1173 // TCE is an osless target
1174 if (Triple.getArchName() == "tce")
1175 return createTCEHostInfo(*this, Triple);
1177 switch (Triple.getOS()) {
1178 case llvm::Triple::AuroraUX:
1179 return createAuroraUXHostInfo(*this, Triple);
1180 case llvm::Triple::Darwin:
1181 return createDarwinHostInfo(*this, Triple);
1182 case llvm::Triple::DragonFly:
1183 return createDragonFlyHostInfo(*this, Triple);
1184 case llvm::Triple::OpenBSD:
1185 return createOpenBSDHostInfo(*this, Triple);
1186 case llvm::Triple::FreeBSD:
1187 return createFreeBSDHostInfo(*this, Triple);
1188 case llvm::Triple::Linux:
1189 return createLinuxHostInfo(*this, Triple);
1191 return createUnknownHostInfo(*this, Triple);
1195 bool Driver::ShouldUseClangCompiler(const Compilation &C, const JobAction &JA,
1196 const llvm::Triple &Triple) const {
1197 // Check if user requested no clang, or clang doesn't understand this type (we
1198 // only handle single inputs for now).
1199 if (!CCCUseClang || JA.size() != 1 ||
1200 !types::isAcceptedByClang((*JA.begin())->getType()))
1203 // Otherwise make sure this is an action clang understands.
1204 if (isa<PreprocessJobAction>(JA)) {
1205 if (!CCCUseClangCPP) {
1206 Diag(clang::diag::warn_drv_not_using_clang_cpp);
1209 } else if (!isa<PrecompileJobAction>(JA) && !isa<CompileJobAction>(JA))
1212 // Use clang for C++?
1213 if (!CCCUseClangCXX && types::isCXX((*JA.begin())->getType())) {
1214 Diag(clang::diag::warn_drv_not_using_clang_cxx);
1218 // Always use clang for precompiling, AST generation, and rewriting,
1219 // regardless of archs.
1220 if (isa<PrecompileJobAction>(JA) || JA.getType() == types::TY_AST ||
1221 JA.getType() == types::TY_RewrittenObjC)
1224 // Finally, don't use clang if this isn't one of the user specified archs to
1226 if (!CCCClangArchs.empty() && !CCCClangArchs.count(Triple.getArch())) {
1227 Diag(clang::diag::warn_drv_not_using_clang_arch) << Triple.getArchName();
1234 /// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the
1235 /// grouped values as integers. Numbers which are not provided are set to 0.
1237 /// \return True if the entire string was parsed (9.2), or all groups were
1238 /// parsed (10.3.5extrastuff).
1239 bool Driver::GetReleaseVersion(const char *Str, unsigned &Major,
1240 unsigned &Minor, unsigned &Micro,
1244 Major = Minor = Micro = 0;
1249 Major = (unsigned) strtol(Str, &End, 10);
1250 if (*Str != '\0' && *End == '\0')
1256 Minor = (unsigned) strtol(Str, &End, 10);
1257 if (*Str != '\0' && *End == '\0')
1263 Micro = (unsigned) strtol(Str, &End, 10);
1264 if (*Str != '\0' && *End == '\0')