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 #ifdef HAVE_CLANG_CONFIG_H
11 # include "clang/Config/config.h"
14 #include "clang/Driver/Driver.h"
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"
30 #include "clang/Basic/Version.h"
32 #include "llvm/Config/config.h"
33 #include "llvm/ADT/ArrayRef.h"
34 #include "llvm/ADT/StringSet.h"
35 #include "llvm/ADT/OwningPtr.h"
36 #include "llvm/Support/PrettyStackTrace.h"
37 #include "llvm/Support/raw_ostream.h"
38 #include "llvm/Support/FileSystem.h"
39 #include "llvm/Support/Path.h"
40 #include "llvm/Support/Program.h"
42 #include "InputInfo.h"
46 using namespace clang::driver;
47 using namespace clang;
49 Driver::Driver(llvm::StringRef _ClangExecutable,
50 llvm::StringRef _DefaultHostTriple,
51 llvm::StringRef _DefaultImageName,
52 bool IsProduction, bool CXXIsProduction,
54 : Opts(createDriverOptTable()), Diags(_Diags),
55 ClangExecutable(_ClangExecutable), UseStdLib(true),
56 DefaultHostTriple(_DefaultHostTriple), DefaultImageName(_DefaultImageName),
57 DriverTitle("clang \"gcc-compatible\" driver"),
59 CCPrintOptionsFilename(0), CCPrintHeadersFilename(0),
60 CCLogDiagnosticsFilename(0), CCCIsCXX(false),
61 CCCIsCPP(false),CCCEcho(false), CCCPrintBindings(false),
62 CCPrintOptions(false), CCPrintHeaders(false), CCLogDiagnostics(false),
63 CCCGenericGCCName(""), CheckInputsExist(true), CCCUseClang(true),
64 CCCUseClangCXX(true), CCCUseClangCPP(true), CCCUsePCH(true),
65 SuppressMissingInputWarning(false) {
67 // In a "production" build, only use clang on architectures we expect to
68 // work, and don't use clang C++.
70 // During development its more convenient to always have the driver use
71 // clang, but we don't want users to be confused when things don't work, or
72 // to file bugs for things we don't support.
73 CCCClangArchs.insert(llvm::Triple::x86);
74 CCCClangArchs.insert(llvm::Triple::x86_64);
75 CCCClangArchs.insert(llvm::Triple::arm);
78 CCCUseClangCXX = false;
81 Name = llvm::sys::path::stem(ClangExecutable);
82 Dir = llvm::sys::path::parent_path(ClangExecutable);
84 // Compute the path to the resource directory.
85 llvm::StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
86 llvm::SmallString<128> P(Dir);
87 if (ClangResourceDir != "")
88 llvm::sys::path::append(P, ClangResourceDir);
90 llvm::sys::path::append(P, "..", "lib", "clang", CLANG_VERSION_STRING);
91 ResourceDir = P.str();
99 InputArgList *Driver::ParseArgStrings(llvm::ArrayRef<const char *> ArgList) {
100 llvm::PrettyStackTraceString CrashInfo("Command line argument parsing");
101 unsigned MissingArgIndex, MissingArgCount;
102 InputArgList *Args = getOpts().ParseArgs(ArgList.begin(), ArgList.end(),
103 MissingArgIndex, MissingArgCount);
105 // Check for missing argument error.
107 Diag(clang::diag::err_drv_missing_argument)
108 << Args->getArgString(MissingArgIndex) << MissingArgCount;
110 // Check for unsupported options.
111 for (ArgList::const_iterator it = Args->begin(), ie = Args->end();
114 if (A->getOption().isUnsupported()) {
115 Diag(clang::diag::err_drv_unsupported_opt) << A->getAsString(*Args);
123 DerivedArgList *Driver::TranslateInputArgs(const InputArgList &Args) const {
124 DerivedArgList *DAL = new DerivedArgList(Args);
126 bool HasNostdlib = Args.hasArg(options::OPT_nostdlib);
127 for (ArgList::const_iterator it = Args.begin(),
128 ie = Args.end(); it != ie; ++it) {
131 // Unfortunately, we have to parse some forwarding options (-Xassembler,
132 // -Xlinker, -Xpreprocessor) because we either integrate their functionality
133 // (assembler and preprocessor), or bypass a previous driver ('collect2').
135 // Rewrite linker options, to replace --no-demangle with a custom internal
137 if ((A->getOption().matches(options::OPT_Wl_COMMA) ||
138 A->getOption().matches(options::OPT_Xlinker)) &&
139 A->containsValue("--no-demangle")) {
140 // Add the rewritten no-demangle argument.
141 DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_Xlinker__no_demangle));
143 // Add the remaining values as Xlinker arguments.
144 for (unsigned i = 0, e = A->getNumValues(); i != e; ++i)
145 if (llvm::StringRef(A->getValue(Args, i)) != "--no-demangle")
146 DAL->AddSeparateArg(A, Opts->getOption(options::OPT_Xlinker),
147 A->getValue(Args, i));
152 // Rewrite preprocessor options, to replace -Wp,-MD,FOO which is used by
153 // some build systems. We don't try to be complete here because we don't
154 // care to encourage this usage model.
155 if (A->getOption().matches(options::OPT_Wp_COMMA) &&
156 A->getNumValues() == 2 &&
157 (A->getValue(Args, 0) == llvm::StringRef("-MD") ||
158 A->getValue(Args, 0) == llvm::StringRef("-MMD"))) {
159 // Rewrite to -MD/-MMD along with -MF.
160 if (A->getValue(Args, 0) == llvm::StringRef("-MD"))
161 DAL->AddFlagArg(A, Opts->getOption(options::OPT_MD));
163 DAL->AddFlagArg(A, Opts->getOption(options::OPT_MMD));
164 DAL->AddSeparateArg(A, Opts->getOption(options::OPT_MF),
165 A->getValue(Args, 1));
169 // Rewrite reserved library names.
170 if (A->getOption().matches(options::OPT_l)) {
171 llvm::StringRef Value = A->getValue(Args);
173 // Rewrite unless -nostdlib is present.
174 if (!HasNostdlib && Value == "stdc++") {
175 DAL->AddFlagArg(A, Opts->getOption(
176 options::OPT_Z_reserved_lib_stdcxx));
180 // Rewrite unconditionally.
181 if (Value == "cc_kext") {
182 DAL->AddFlagArg(A, Opts->getOption(
183 options::OPT_Z_reserved_lib_cckext));
191 // Add a default value of -mlinker-version=, if one was given and the user
192 // didn't specify one.
193 #if defined(HOST_LINK_VERSION)
194 if (!Args.hasArg(options::OPT_mlinker_version_EQ)) {
195 DAL->AddJoinedArg(0, Opts->getOption(options::OPT_mlinker_version_EQ),
197 DAL->getLastArg(options::OPT_mlinker_version_EQ)->claim();
204 Compilation *Driver::BuildCompilation(llvm::ArrayRef<const char *> ArgList) {
205 llvm::PrettyStackTraceString CrashInfo("Compilation construction");
207 // FIXME: Handle environment options which effect driver behavior, somewhere
208 // (client?). GCC_EXEC_PREFIX, COMPILER_PATH, LIBRARY_PATH, LPATH,
211 // FIXME: What are we going to do with -V and -b?
213 // FIXME: This stuff needs to go into the Compilation, not the driver.
214 bool CCCPrintOptions = false, CCCPrintActions = false;
216 InputArgList *Args = ParseArgStrings(ArgList.slice(1));
218 // -no-canonical-prefixes is used very early in main.
219 Args->ClaimAllArgs(options::OPT_no_canonical_prefixes);
222 Args->ClaimAllArgs(options::OPT_pipe);
224 // Extract -ccc args.
226 // FIXME: We need to figure out where this behavior should live. Most of it
227 // should be outside in the client; the parts that aren't should have proper
228 // options, either by introducing new ones or by overloading gcc ones like -V
230 CCCPrintOptions = Args->hasArg(options::OPT_ccc_print_options);
231 CCCPrintActions = Args->hasArg(options::OPT_ccc_print_phases);
232 CCCPrintBindings = Args->hasArg(options::OPT_ccc_print_bindings);
233 CCCIsCXX = Args->hasArg(options::OPT_ccc_cxx) || CCCIsCXX;
234 CCCEcho = Args->hasArg(options::OPT_ccc_echo);
235 if (const Arg *A = Args->getLastArg(options::OPT_ccc_gcc_name))
236 CCCGenericGCCName = A->getValue(*Args);
237 CCCUseClangCXX = Args->hasFlag(options::OPT_ccc_clang_cxx,
238 options::OPT_ccc_no_clang_cxx,
240 CCCUsePCH = Args->hasFlag(options::OPT_ccc_pch_is_pch,
241 options::OPT_ccc_pch_is_pth);
242 CCCUseClang = !Args->hasArg(options::OPT_ccc_no_clang);
243 CCCUseClangCPP = !Args->hasArg(options::OPT_ccc_no_clang_cpp);
244 if (const Arg *A = Args->getLastArg(options::OPT_ccc_clang_archs)) {
245 llvm::StringRef Cur = A->getValue(*Args);
247 CCCClangArchs.clear();
248 while (!Cur.empty()) {
249 std::pair<llvm::StringRef, llvm::StringRef> Split = Cur.split(',');
251 if (!Split.first.empty()) {
252 llvm::Triple::ArchType Arch =
253 llvm::Triple(Split.first, "", "").getArch();
255 if (Arch == llvm::Triple::UnknownArch)
256 Diag(clang::diag::err_drv_invalid_arch_name) << Split.first;
258 CCCClangArchs.insert(Arch);
264 // FIXME: We shouldn't overwrite the default host triple here, but we have
265 // nowhere else to put this currently.
266 if (const Arg *A = Args->getLastArg(options::OPT_ccc_host_triple))
267 DefaultHostTriple = A->getValue(*Args);
268 if (const Arg *A = Args->getLastArg(options::OPT_ccc_install_dir))
269 Dir = InstalledDir = A->getValue(*Args);
270 for (arg_iterator it = Args->filtered_begin(options::OPT_B),
271 ie = Args->filtered_end(); it != ie; ++it) {
274 PrefixDirs.push_back(A->getValue(*Args, 0));
276 if (const Arg *A = Args->getLastArg(options::OPT__sysroot_EQ))
277 SysRoot = A->getValue(*Args);
278 if (Args->hasArg(options::OPT_nostdlib))
281 Host = GetHostInfo(DefaultHostTriple.c_str());
283 // Perform the default argument translations.
284 DerivedArgList *TranslatedArgs = TranslateInputArgs(*Args);
286 // The compilation takes ownership of Args.
287 Compilation *C = new Compilation(*this, *Host->CreateToolChain(*Args), Args,
290 // FIXME: This behavior shouldn't be here.
291 if (CCCPrintOptions) {
292 PrintOptions(C->getInputArgs());
296 if (!HandleImmediateArgs(*C))
299 // Construct the list of abstract actions to perform for this compilation.
300 if (Host->useDriverDriver())
301 BuildUniversalActions(C->getDefaultToolChain(), C->getArgs(),
304 BuildActions(C->getDefaultToolChain(), C->getArgs(), C->getActions());
306 if (CCCPrintActions) {
316 int Driver::ExecuteCompilation(const Compilation &C) const {
317 // Just print if -### was present.
318 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
319 C.PrintJob(llvm::errs(), C.getJobs(), "\n", true);
323 // If there were errors building the compilation, quit now.
324 if (getDiags().hasErrorOccurred())
327 const Command *FailingCommand = 0;
328 int Res = C.ExecuteJob(C.getJobs(), FailingCommand);
330 // Remove temp files.
331 C.CleanupFileList(C.getTempFiles());
333 // If the command succeeded, we are done.
337 // Otherwise, remove result files as well.
338 if (!C.getArgs().hasArg(options::OPT_save_temps))
339 C.CleanupFileList(C.getResultFiles(), true);
341 // Print extra information about abnormal failures, if possible.
343 // This is ad-hoc, but we don't want to be excessively noisy. If the result
344 // status was 1, assume the command failed normally. In particular, if it was
345 // the compiler then assume it gave a reasonable error code. Failures in other
346 // tools are less common, and they generally have worse diagnostics, so always
347 // print the diagnostic there.
348 const Tool &FailingTool = FailingCommand->getCreator();
350 if (!FailingCommand->getCreator().hasGoodDiagnostics() || Res != 1) {
351 // FIXME: See FIXME above regarding result code interpretation.
353 Diag(clang::diag::err_drv_command_signalled)
354 << FailingTool.getShortName() << -Res;
356 Diag(clang::diag::err_drv_command_failed)
357 << FailingTool.getShortName() << Res;
363 void Driver::PrintOptions(const ArgList &Args) const {
365 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
366 it != ie; ++it, ++i) {
368 llvm::errs() << "Option " << i << " - "
369 << "Name: \"" << A->getOption().getName() << "\", "
371 for (unsigned j = 0; j < A->getNumValues(); ++j) {
373 llvm::errs() << ", ";
374 llvm::errs() << '"' << A->getValue(Args, j) << '"';
376 llvm::errs() << "}\n";
380 void Driver::PrintHelp(bool ShowHidden) const {
381 getOpts().PrintHelp(llvm::outs(), Name.c_str(), DriverTitle.c_str(),
385 void Driver::PrintVersion(const Compilation &C, llvm::raw_ostream &OS) const {
386 // FIXME: The following handlers should use a callback mechanism, we don't
387 // know what the client would like to do.
388 OS << getClangFullVersion() << '\n';
389 const ToolChain &TC = C.getDefaultToolChain();
390 OS << "Target: " << TC.getTripleString() << '\n';
392 // Print the threading model.
394 // FIXME: Implement correctly.
395 OS << "Thread model: " << "posix" << '\n';
398 /// PrintDiagnosticCategories - Implement the --print-diagnostic-categories
400 static void PrintDiagnosticCategories(llvm::raw_ostream &OS) {
401 for (unsigned i = 1; // Skip the empty category.
402 const char *CategoryName = DiagnosticIDs::getCategoryNameFromID(i); ++i)
403 OS << i << ',' << CategoryName << '\n';
406 bool Driver::HandleImmediateArgs(const Compilation &C) {
407 // The order these options are handled in gcc is all over the place, but we
408 // don't expect inconsistencies w.r.t. that to matter in practice.
410 if (C.getArgs().hasArg(options::OPT_dumpmachine)) {
411 llvm::outs() << C.getDefaultToolChain().getTripleString() << '\n';
415 if (C.getArgs().hasArg(options::OPT_dumpversion)) {
416 // Since -dumpversion is only implemented for pedantic GCC compatibility, we
417 // return an answer which matches our definition of __VERSION__.
419 // If we want to return a more correct answer some day, then we should
420 // introduce a non-pedantically GCC compatible mode to Clang in which we
421 // provide sensible definitions for -dumpversion, __VERSION__, etc.
422 llvm::outs() << "4.2.1\n";
426 if (C.getArgs().hasArg(options::OPT__print_diagnostic_categories)) {
427 PrintDiagnosticCategories(llvm::outs());
431 if (C.getArgs().hasArg(options::OPT__help) ||
432 C.getArgs().hasArg(options::OPT__help_hidden)) {
433 PrintHelp(C.getArgs().hasArg(options::OPT__help_hidden));
437 if (C.getArgs().hasArg(options::OPT__version)) {
438 // Follow gcc behavior and use stdout for --version and stderr for -v.
439 PrintVersion(C, llvm::outs());
443 if (C.getArgs().hasArg(options::OPT_v) ||
444 C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
445 PrintVersion(C, llvm::errs());
446 SuppressMissingInputWarning = true;
449 const ToolChain &TC = C.getDefaultToolChain();
450 if (C.getArgs().hasArg(options::OPT_print_search_dirs)) {
451 llvm::outs() << "programs: =";
452 for (ToolChain::path_list::const_iterator it = TC.getProgramPaths().begin(),
453 ie = TC.getProgramPaths().end(); it != ie; ++it) {
454 if (it != TC.getProgramPaths().begin())
458 llvm::outs() << "\n";
459 llvm::outs() << "libraries: =";
460 for (ToolChain::path_list::const_iterator it = TC.getFilePaths().begin(),
461 ie = TC.getFilePaths().end(); it != ie; ++it) {
462 if (it != TC.getFilePaths().begin())
466 llvm::outs() << "\n";
470 // FIXME: The following handlers should use a callback mechanism, we don't
471 // know what the client would like to do.
472 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) {
473 llvm::outs() << GetFilePath(A->getValue(C.getArgs()), TC) << "\n";
477 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_prog_name_EQ)) {
478 llvm::outs() << GetProgramPath(A->getValue(C.getArgs()), TC) << "\n";
482 if (C.getArgs().hasArg(options::OPT_print_libgcc_file_name)) {
483 llvm::outs() << GetFilePath("libgcc.a", TC) << "\n";
487 if (C.getArgs().hasArg(options::OPT_print_multi_lib)) {
488 // FIXME: We need tool chain support for this.
489 llvm::outs() << ".;\n";
491 switch (C.getDefaultToolChain().getTriple().getArch()) {
495 case llvm::Triple::x86_64:
496 llvm::outs() << "x86_64;@m64" << "\n";
499 case llvm::Triple::ppc64:
500 llvm::outs() << "ppc64;@m64" << "\n";
506 // FIXME: What is the difference between print-multi-directory and
507 // print-multi-os-directory?
508 if (C.getArgs().hasArg(options::OPT_print_multi_directory) ||
509 C.getArgs().hasArg(options::OPT_print_multi_os_directory)) {
510 switch (C.getDefaultToolChain().getTriple().getArch()) {
512 case llvm::Triple::x86:
513 case llvm::Triple::ppc:
514 llvm::outs() << "." << "\n";
517 case llvm::Triple::x86_64:
518 llvm::outs() << "x86_64" << "\n";
521 case llvm::Triple::ppc64:
522 llvm::outs() << "ppc64" << "\n";
531 static unsigned PrintActions1(const Compilation &C, Action *A,
532 std::map<Action*, unsigned> &Ids) {
537 llvm::raw_string_ostream os(str);
539 os << Action::getClassName(A->getKind()) << ", ";
540 if (InputAction *IA = dyn_cast<InputAction>(A)) {
541 os << "\"" << IA->getInputArg().getValue(C.getArgs()) << "\"";
542 } else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) {
543 os << '"' << (BIA->getArchName() ? BIA->getArchName() :
544 C.getDefaultToolChain().getArchName()) << '"'
545 << ", {" << PrintActions1(C, *BIA->begin(), Ids) << "}";
548 for (Action::iterator it = A->begin(), ie = A->end(); it != ie;) {
549 os << PrintActions1(C, *it, Ids);
557 unsigned Id = Ids.size();
559 llvm::errs() << Id << ": " << os.str() << ", "
560 << types::getTypeName(A->getType()) << "\n";
565 void Driver::PrintActions(const Compilation &C) const {
566 std::map<Action*, unsigned> Ids;
567 for (ActionList::const_iterator it = C.getActions().begin(),
568 ie = C.getActions().end(); it != ie; ++it)
569 PrintActions1(C, *it, Ids);
572 /// \brief Check whether the given input tree contains any compilation (or
573 /// assembly) actions.
574 static bool ContainsCompileAction(const Action *A) {
575 if (isa<CompileJobAction>(A) || isa<AssembleJobAction>(A))
578 for (Action::const_iterator it = A->begin(), ie = A->end(); it != ie; ++it)
579 if (ContainsCompileAction(*it))
585 void Driver::BuildUniversalActions(const ToolChain &TC,
586 const DerivedArgList &Args,
587 ActionList &Actions) const {
588 llvm::PrettyStackTraceString CrashInfo("Building universal build actions");
589 // Collect the list of architectures. Duplicates are allowed, but should only
590 // be handled once (in the order seen).
591 llvm::StringSet<> ArchNames;
592 llvm::SmallVector<const char *, 4> Archs;
593 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
597 if (A->getOption().matches(options::OPT_arch)) {
598 // Validate the option here; we don't save the type here because its
599 // particular spelling may participate in other driver choices.
600 llvm::Triple::ArchType Arch =
601 llvm::Triple::getArchTypeForDarwinArchName(A->getValue(Args));
602 if (Arch == llvm::Triple::UnknownArch) {
603 Diag(clang::diag::err_drv_invalid_arch_name)
604 << A->getAsString(Args);
609 if (ArchNames.insert(A->getValue(Args)))
610 Archs.push_back(A->getValue(Args));
614 // When there is no explicit arch for this platform, make sure we still bind
615 // the architecture (to the default) so that -Xarch_ is handled correctly.
619 // FIXME: We killed off some others but these aren't yet detected in a
620 // functional manner. If we added information to jobs about which "auxiliary"
621 // files they wrote then we could detect the conflict these cause downstream.
622 if (Archs.size() > 1) {
623 // No recovery needed, the point of this is just to prevent
624 // overwriting the same files.
625 if (const Arg *A = Args.getLastArg(options::OPT_save_temps))
626 Diag(clang::diag::err_drv_invalid_opt_with_multiple_archs)
627 << A->getAsString(Args);
630 ActionList SingleActions;
631 BuildActions(TC, Args, SingleActions);
633 // Add in arch bindings for every top level action, as well as lipo and
634 // dsymutil steps if needed.
635 for (unsigned i = 0, e = SingleActions.size(); i != e; ++i) {
636 Action *Act = SingleActions[i];
638 // Make sure we can lipo this kind of output. If not (and it is an actual
639 // output) then we disallow, since we can't create an output file with the
640 // right name without overwriting it. We could remove this oddity by just
641 // changing the output names to include the arch, which would also fix
642 // -save-temps. Compatibility wins for now.
644 if (Archs.size() > 1 && !types::canLipoType(Act->getType()))
645 Diag(clang::diag::err_drv_invalid_output_with_multiple_archs)
646 << types::getTypeName(Act->getType());
649 for (unsigned i = 0, e = Archs.size(); i != e; ++i) {
650 Inputs.push_back(new BindArchAction(Act, Archs[i]));
652 Inputs.back()->setOwnsInputs(false);
655 // Lipo if necessary, we do it this way because we need to set the arch flag
656 // so that -Xarch_ gets overwritten.
657 if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing)
658 Actions.append(Inputs.begin(), Inputs.end());
660 Actions.push_back(new LipoJobAction(Inputs, Act->getType()));
662 // Add a 'dsymutil' step if necessary, when debug info is enabled and we
663 // have a compile input. We need to run 'dsymutil' ourselves in such cases
664 // because the debug info will refer to a temporary object file which is
665 // will be removed at the end of the compilation process.
666 if (Act->getType() == types::TY_Image) {
667 Arg *A = Args.getLastArg(options::OPT_g_Group);
668 if (A && !A->getOption().matches(options::OPT_g0) &&
669 !A->getOption().matches(options::OPT_gstabs) &&
670 ContainsCompileAction(Actions.back())) {
672 Inputs.push_back(Actions.back());
675 Actions.push_back(new DsymutilJobAction(Inputs, types::TY_dSYM));
681 void Driver::BuildActions(const ToolChain &TC, const DerivedArgList &Args,
682 ActionList &Actions) const {
683 llvm::PrettyStackTraceString CrashInfo("Building compilation actions");
684 // Start by constructing the list of inputs and their types.
686 // Track the current user specified (-x) input. We also explicitly track the
687 // argument used to set the type; we only want to claim the type when we
688 // actually use it, so we warn about unused -x arguments.
689 types::ID InputType = types::TY_Nothing;
690 Arg *InputTypeArg = 0;
692 llvm::SmallVector<std::pair<types::ID, const Arg*>, 16> Inputs;
693 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
697 if (isa<InputOption>(A->getOption())) {
698 const char *Value = A->getValue(Args);
699 types::ID Ty = types::TY_INVALID;
701 // Infer the input type if necessary.
702 if (InputType == types::TY_Nothing) {
703 // If there was an explicit arg for this, claim it.
705 InputTypeArg->claim();
707 // stdin must be handled specially.
708 if (memcmp(Value, "-", 2) == 0) {
709 // If running with -E, treat as a C input (this changes the builtin
710 // macros, for example). This may be overridden by -ObjC below.
712 // Otherwise emit an error but still use a valid type to avoid
713 // spurious errors (e.g., no inputs).
714 if (!Args.hasArgNoClaim(options::OPT_E) && !CCCIsCPP)
715 Diag(clang::diag::err_drv_unknown_stdin_type);
718 // Otherwise lookup by extension.
719 // Fallback is C if invoked as C preprocessor or Object otherwise.
720 // We use a host hook here because Darwin at least has its own
721 // idea of what .s is.
722 if (const char *Ext = strrchr(Value, '.'))
723 Ty = TC.LookupTypeForExtension(Ext + 1);
725 if (Ty == types::TY_INVALID) {
729 Ty = types::TY_Object;
732 // If the driver is invoked as C++ compiler (like clang++ or c++) it
733 // should autodetect some input files as C++ for g++ compatibility.
735 types::ID OldTy = Ty;
736 Ty = types::lookupCXXTypeForCType(Ty);
739 Diag(clang::diag::warn_drv_treating_input_as_cxx)
740 << getTypeName(OldTy) << getTypeName(Ty);
744 // -ObjC and -ObjC++ override the default language, but only for "source
745 // files". We just treat everything that isn't a linker input as a
748 // FIXME: Clean this up if we move the phase sequence into the type.
749 if (Ty != types::TY_Object) {
750 if (Args.hasArg(options::OPT_ObjC))
752 else if (Args.hasArg(options::OPT_ObjCXX))
753 Ty = types::TY_ObjCXX;
756 assert(InputTypeArg && "InputType set w/o InputTypeArg");
757 InputTypeArg->claim();
761 // Check that the file exists, if enabled.
762 if (CheckInputsExist && memcmp(Value, "-", 2) != 0) {
763 llvm::SmallString<64> Path(Value);
764 if (Arg *WorkDir = Args.getLastArg(options::OPT_working_directory))
765 if (llvm::sys::path::is_absolute(Path.str())) {
766 Path = WorkDir->getValue(Args);
767 llvm::sys::path::append(Path, Value);
771 if (/*error_code ec =*/llvm::sys::fs::exists(Value, exists) || !exists)
772 Diag(clang::diag::err_drv_no_such_file) << Path.str();
774 Inputs.push_back(std::make_pair(Ty, A));
776 Inputs.push_back(std::make_pair(Ty, A));
778 } else if (A->getOption().isLinkerInput()) {
779 // Just treat as object type, we could make a special type for this if
781 Inputs.push_back(std::make_pair(types::TY_Object, A));
783 } else if (A->getOption().matches(options::OPT_x)) {
785 InputType = types::lookupTypeForTypeSpecifier(A->getValue(Args));
787 // Follow gcc behavior and treat as linker input for invalid -x
788 // options. Its not clear why we shouldn't just revert to unknown; but
789 // this isn't very important, we might as well be bug compatible.
791 Diag(clang::diag::err_drv_unknown_language) << A->getValue(Args);
792 InputType = types::TY_Object;
797 if (CCCIsCPP && Inputs.empty()) {
798 // If called as standalone preprocessor, stdin is processed
799 // if no other input is present.
800 unsigned Index = Args.getBaseArgs().MakeIndex("-");
801 Arg *A = Opts->ParseOneArg(Args, Index);
803 Inputs.push_back(std::make_pair(types::TY_C, A));
806 if (!SuppressMissingInputWarning && Inputs.empty()) {
807 Diag(clang::diag::err_drv_no_input_files);
811 // Determine which compilation mode we are in. We look for options which
812 // affect the phase, starting with the earliest phases, and record which
813 // option we used to determine the final phase.
814 Arg *FinalPhaseArg = 0;
815 phases::ID FinalPhase;
817 // -{E,M,MM} only run the preprocessor.
819 (FinalPhaseArg = Args.getLastArg(options::OPT_E)) ||
820 (FinalPhaseArg = Args.getLastArg(options::OPT_M, options::OPT_MM))) {
821 FinalPhase = phases::Preprocess;
823 // -{fsyntax-only,-analyze,emit-ast,S} only run up to the compiler.
824 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_fsyntax_only)) ||
825 (FinalPhaseArg = Args.getLastArg(options::OPT_rewrite_objc)) ||
826 (FinalPhaseArg = Args.getLastArg(options::OPT__analyze,
827 options::OPT__analyze_auto)) ||
828 (FinalPhaseArg = Args.getLastArg(options::OPT_emit_ast)) ||
829 (FinalPhaseArg = Args.getLastArg(options::OPT_S))) {
830 FinalPhase = phases::Compile;
832 // -c only runs up to the assembler.
833 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_c))) {
834 FinalPhase = phases::Assemble;
836 // Otherwise do everything.
838 FinalPhase = phases::Link;
840 // Reject -Z* at the top level, these options should never have been exposed
842 if (Arg *A = Args.getLastArg(options::OPT_Z_Joined))
843 Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args);
845 // Construct the actions to perform.
846 ActionList LinkerInputs;
847 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
848 types::ID InputType = Inputs[i].first;
849 const Arg *InputArg = Inputs[i].second;
851 unsigned NumSteps = types::getNumCompilationPhases(InputType);
852 assert(NumSteps && "Invalid number of steps!");
854 // If the first step comes after the final phase we are doing as part of
855 // this compilation, warn the user about it.
856 phases::ID InitialPhase = types::getCompilationPhase(InputType, 0);
857 if (InitialPhase > FinalPhase) {
858 // Claim here to avoid the more general unused warning.
861 // Suppress all unused style warnings with -Qunused-arguments
862 if (Args.hasArg(options::OPT_Qunused_arguments))
865 // Special case '-E' warning on a previously preprocessed file to make
867 if (InitialPhase == phases::Compile && FinalPhase == phases::Preprocess &&
868 getPreprocessedType(InputType) == types::TY_INVALID)
869 Diag(clang::diag::warn_drv_preprocessed_input_file_unused)
870 << InputArg->getAsString(Args)
871 << FinalPhaseArg->getOption().getName();
873 Diag(clang::diag::warn_drv_input_file_unused)
874 << InputArg->getAsString(Args)
875 << getPhaseName(InitialPhase)
876 << FinalPhaseArg->getOption().getName();
880 // Build the pipeline for this file.
881 llvm::OwningPtr<Action> Current(new InputAction(*InputArg, InputType));
882 for (unsigned i = 0; i != NumSteps; ++i) {
883 phases::ID Phase = types::getCompilationPhase(InputType, i);
885 // We are done if this step is past what the user requested.
886 if (Phase > FinalPhase)
889 // Queue linker inputs.
890 if (Phase == phases::Link) {
891 assert(i + 1 == NumSteps && "linking must be final compilation step.");
892 LinkerInputs.push_back(Current.take());
896 // Some types skip the assembler phase (e.g., llvm-bc), but we can't
897 // encode this in the steps because the intermediate type depends on
898 // arguments. Just special case here.
899 if (Phase == phases::Assemble && Current->getType() != types::TY_PP_Asm)
902 // Otherwise construct the appropriate action.
903 Current.reset(ConstructPhaseAction(Args, Phase, Current.take()));
904 if (Current->getType() == types::TY_Nothing)
908 // If we ended with something, add to the output list.
910 Actions.push_back(Current.take());
913 // Add a link action if necessary.
914 if (!LinkerInputs.empty())
915 Actions.push_back(new LinkJobAction(LinkerInputs, types::TY_Image));
917 // If we are linking, claim any options which are obviously only used for
919 if (FinalPhase == phases::Link)
920 Args.ClaimAllArgs(options::OPT_CompileOnly_Group);
923 Action *Driver::ConstructPhaseAction(const ArgList &Args, phases::ID Phase,
924 Action *Input) const {
925 llvm::PrettyStackTraceString CrashInfo("Constructing phase actions");
926 // Build the appropriate action.
928 case phases::Link: assert(0 && "link action invalid here.");
929 case phases::Preprocess: {
931 // -{M, MM} alter the output type.
932 if (Args.hasArg(options::OPT_M, options::OPT_MM)) {
933 OutputTy = types::TY_Dependencies;
935 OutputTy = types::getPreprocessedType(Input->getType());
936 assert(OutputTy != types::TY_INVALID &&
937 "Cannot preprocess this input type!");
939 return new PreprocessJobAction(Input, OutputTy);
941 case phases::Precompile:
942 return new PrecompileJobAction(Input, types::TY_PCH);
943 case phases::Compile: {
945 if (const Arg *A = Args.getLastArg(options::OPT_O_Group))
946 HasO4 = A->getOption().matches(options::OPT_O4);
948 if (Args.hasArg(options::OPT_fsyntax_only)) {
949 return new CompileJobAction(Input, types::TY_Nothing);
950 } else if (Args.hasArg(options::OPT_rewrite_objc)) {
951 return new CompileJobAction(Input, types::TY_RewrittenObjC);
952 } else if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto)) {
953 return new AnalyzeJobAction(Input, types::TY_Plist);
954 } else if (Args.hasArg(options::OPT_emit_ast)) {
955 return new CompileJobAction(Input, types::TY_AST);
956 } else if (Args.hasArg(options::OPT_emit_llvm) ||
957 Args.hasFlag(options::OPT_flto, options::OPT_fno_lto, false) ||
960 Args.hasArg(options::OPT_S) ? types::TY_LTO_IR : types::TY_LTO_BC;
961 return new CompileJobAction(Input, Output);
963 return new CompileJobAction(Input, types::TY_PP_Asm);
966 case phases::Assemble:
967 return new AssembleJobAction(Input, types::TY_Object);
970 assert(0 && "invalid phase in ConstructPhaseAction");
974 void Driver::BuildJobs(Compilation &C) const {
975 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
977 Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o);
979 // It is an error to provide a -o option if we are making multiple output
982 unsigned NumOutputs = 0;
983 for (ActionList::const_iterator it = C.getActions().begin(),
984 ie = C.getActions().end(); it != ie; ++it)
985 if ((*it)->getType() != types::TY_Nothing)
988 if (NumOutputs > 1) {
989 Diag(clang::diag::err_drv_output_argument_with_multiple_files);
994 for (ActionList::const_iterator it = C.getActions().begin(),
995 ie = C.getActions().end(); it != ie; ++it) {
998 // If we are linking an image for multiple archs then the linker wants
999 // -arch_multiple and -final_output <final image name>. Unfortunately, this
1000 // doesn't fit in cleanly because we have to pass this information down.
1002 // FIXME: This is a hack; find a cleaner way to integrate this into the
1004 const char *LinkingOutput = 0;
1005 if (isa<LipoJobAction>(A)) {
1007 LinkingOutput = FinalOutput->getValue(C.getArgs());
1009 LinkingOutput = DefaultImageName.c_str();
1013 BuildJobsForAction(C, A, &C.getDefaultToolChain(),
1015 /*AtTopLevel*/ true,
1016 /*LinkingOutput*/ LinkingOutput,
1020 // If the user passed -Qunused-arguments or there were errors, don't warn
1021 // about any unused arguments.
1022 if (Diags.hasErrorOccurred() ||
1023 C.getArgs().hasArg(options::OPT_Qunused_arguments))
1027 (void) C.getArgs().hasArg(options::OPT__HASH_HASH_HASH);
1029 for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end();
1033 // FIXME: It would be nice to be able to send the argument to the
1034 // Diagnostic, so that extra values, position, and so on could be printed.
1035 if (!A->isClaimed()) {
1036 if (A->getOption().hasNoArgumentUnused())
1039 // Suppress the warning automatically if this is just a flag, and it is an
1040 // instance of an argument we already claimed.
1041 const Option &Opt = A->getOption();
1042 if (isa<FlagOption>(Opt)) {
1043 bool DuplicateClaimed = false;
1045 for (arg_iterator it = C.getArgs().filtered_begin(&Opt),
1046 ie = C.getArgs().filtered_end(); it != ie; ++it) {
1047 if ((*it)->isClaimed()) {
1048 DuplicateClaimed = true;
1053 if (DuplicateClaimed)
1057 Diag(clang::diag::warn_drv_unused_argument)
1058 << A->getAsString(C.getArgs());
1063 static const Tool &SelectToolForJob(Compilation &C, const ToolChain *TC,
1064 const JobAction *JA,
1065 const ActionList *&Inputs) {
1066 const Tool *ToolForJob = 0;
1068 // See if we should look for a compiler with an integrated assembler. We match
1069 // bottom up, so what we are actually looking for is an assembler job with a
1072 // FIXME: This doesn't belong here, but ideally we will support static soon
1074 bool HasStatic = (C.getArgs().hasArg(options::OPT_mkernel) ||
1075 C.getArgs().hasArg(options::OPT_static) ||
1076 C.getArgs().hasArg(options::OPT_fapple_kext));
1077 bool IsDarwin = TC->getTriple().getOS() == llvm::Triple::Darwin;
1078 bool IsIADefault = TC->IsIntegratedAssemblerDefault() &&
1079 !(HasStatic && IsDarwin);
1080 if (C.getArgs().hasFlag(options::OPT_integrated_as,
1081 options::OPT_no_integrated_as,
1083 !C.getArgs().hasArg(options::OPT_save_temps) &&
1084 isa<AssembleJobAction>(JA) &&
1085 Inputs->size() == 1 && isa<CompileJobAction>(*Inputs->begin())) {
1086 const Tool &Compiler = TC->SelectTool(
1087 C, cast<JobAction>(**Inputs->begin()), (*Inputs)[0]->getInputs());
1088 if (Compiler.hasIntegratedAssembler()) {
1089 Inputs = &(*Inputs)[0]->getInputs();
1090 ToolForJob = &Compiler;
1094 // Otherwise use the tool for the current job.
1096 ToolForJob = &TC->SelectTool(C, *JA, *Inputs);
1098 // See if we should use an integrated preprocessor. We do so when we have
1099 // exactly one input, since this is the only use case we care about
1100 // (irrelevant since we don't support combine yet).
1101 if (Inputs->size() == 1 && isa<PreprocessJobAction>(*Inputs->begin()) &&
1102 !C.getArgs().hasArg(options::OPT_no_integrated_cpp) &&
1103 !C.getArgs().hasArg(options::OPT_traditional_cpp) &&
1104 !C.getArgs().hasArg(options::OPT_save_temps) &&
1105 ToolForJob->hasIntegratedCPP())
1106 Inputs = &(*Inputs)[0]->getInputs();
1111 void Driver::BuildJobsForAction(Compilation &C,
1113 const ToolChain *TC,
1114 const char *BoundArch,
1116 const char *LinkingOutput,
1117 InputInfo &Result) const {
1118 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
1120 if (const InputAction *IA = dyn_cast<InputAction>(A)) {
1121 // FIXME: It would be nice to not claim this here; maybe the old scheme of
1122 // just using Args was better?
1123 const Arg &Input = IA->getInputArg();
1125 if (Input.getOption().matches(options::OPT_INPUT)) {
1126 const char *Name = Input.getValue(C.getArgs());
1127 Result = InputInfo(Name, A->getType(), Name);
1129 Result = InputInfo(&Input, A->getType(), "");
1133 if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) {
1134 const ToolChain *TC = &C.getDefaultToolChain();
1137 if (BAA->getArchName())
1138 TC = Host->CreateToolChain(C.getArgs(), BAA->getArchName());
1140 BuildJobsForAction(C, *BAA->begin(), TC, BAA->getArchName(),
1141 AtTopLevel, LinkingOutput, Result);
1145 const ActionList *Inputs = &A->getInputs();
1147 const JobAction *JA = cast<JobAction>(A);
1148 const Tool &T = SelectToolForJob(C, TC, JA, Inputs);
1150 // Only use pipes when there is exactly one input.
1151 InputInfoList InputInfos;
1152 for (ActionList::const_iterator it = Inputs->begin(), ie = Inputs->end();
1154 // Treat dsymutil sub-jobs as being at the top-level too, they shouldn't get
1155 // temporary output names.
1157 // FIXME: Clean this up.
1158 bool SubJobAtTopLevel = false;
1159 if (AtTopLevel && isa<DsymutilJobAction>(A))
1160 SubJobAtTopLevel = true;
1163 BuildJobsForAction(C, *it, TC, BoundArch,
1164 SubJobAtTopLevel, LinkingOutput, II);
1165 InputInfos.push_back(II);
1168 // Always use the first input as the base input.
1169 const char *BaseInput = InputInfos[0].getBaseInput();
1171 // ... except dsymutil actions, which use their actual input as the base
1173 if (JA->getType() == types::TY_dSYM)
1174 BaseInput = InputInfos[0].getFilename();
1176 // Determine the place to write output to, if any.
1177 if (JA->getType() == types::TY_Nothing) {
1178 Result = InputInfo(A->getType(), BaseInput);
1180 Result = InputInfo(GetNamedOutputPath(C, *JA, BaseInput, AtTopLevel),
1181 A->getType(), BaseInput);
1184 if (CCCPrintBindings) {
1185 llvm::errs() << "# \"" << T.getToolChain().getTripleString() << '"'
1186 << " - \"" << T.getName() << "\", inputs: [";
1187 for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) {
1188 llvm::errs() << InputInfos[i].getAsString();
1190 llvm::errs() << ", ";
1192 llvm::errs() << "], output: " << Result.getAsString() << "\n";
1194 T.ConstructJob(C, *JA, Result, InputInfos,
1195 C.getArgsForToolChain(TC, BoundArch), LinkingOutput);
1199 const char *Driver::GetNamedOutputPath(Compilation &C,
1200 const JobAction &JA,
1201 const char *BaseInput,
1202 bool AtTopLevel) const {
1203 llvm::PrettyStackTraceString CrashInfo("Computing output path");
1204 // Output to a user requested destination?
1205 if (AtTopLevel && !isa<DsymutilJobAction>(JA)) {
1206 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
1207 return C.addResultFile(FinalOutput->getValue(C.getArgs()));
1210 // Default to writing to stdout?
1211 if (AtTopLevel && isa<PreprocessJobAction>(JA))
1214 // Output to a temporary file?
1215 if (!AtTopLevel && !C.getArgs().hasArg(options::OPT_save_temps)) {
1216 std::string TmpName =
1217 GetTemporaryPath(types::getTypeTempSuffix(JA.getType()));
1218 return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str()));
1221 llvm::SmallString<128> BasePath(BaseInput);
1222 llvm::StringRef BaseName;
1224 // Dsymutil actions should use the full path.
1225 if (isa<DsymutilJobAction>(JA))
1226 BaseName = BasePath;
1228 BaseName = llvm::sys::path::filename(BasePath);
1230 // Determine what the derived output name should be.
1231 const char *NamedOutput;
1232 if (JA.getType() == types::TY_Image) {
1233 NamedOutput = DefaultImageName.c_str();
1235 const char *Suffix = types::getTypeTempSuffix(JA.getType());
1236 assert(Suffix && "All types used for output should have a suffix.");
1238 std::string::size_type End = std::string::npos;
1239 if (!types::appendSuffixForType(JA.getType()))
1240 End = BaseName.rfind('.');
1241 std::string Suffixed(BaseName.substr(0, End));
1244 NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str());
1247 // As an annoying special case, PCH generation doesn't strip the pathname.
1248 if (JA.getType() == types::TY_PCH) {
1249 llvm::sys::path::remove_filename(BasePath);
1250 if (BasePath.empty())
1251 BasePath = NamedOutput;
1253 llvm::sys::path::append(BasePath, NamedOutput);
1254 return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str()));
1256 return C.addResultFile(NamedOutput);
1260 std::string Driver::GetFilePath(const char *Name, const ToolChain &TC) const {
1261 // Respect a limited subset of the '-Bprefix' functionality in GCC by
1262 // attempting to use this prefix when lokup up program paths.
1263 for (Driver::prefix_list::const_iterator it = PrefixDirs.begin(),
1264 ie = PrefixDirs.end(); it != ie; ++it) {
1265 std::string Dir(*it);
1269 Dir = SysRoot + Dir.substr(1);
1270 llvm::sys::Path P(Dir);
1271 P.appendComponent(Name);
1273 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists)
1277 const ToolChain::path_list &List = TC.getFilePaths();
1278 for (ToolChain::path_list::const_iterator
1279 it = List.begin(), ie = List.end(); it != ie; ++it) {
1280 std::string Dir(*it);
1284 Dir = SysRoot + Dir.substr(1);
1285 llvm::sys::Path P(Dir);
1286 P.appendComponent(Name);
1288 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists)
1295 std::string Driver::GetProgramPath(const char *Name, const ToolChain &TC,
1296 bool WantFile) const {
1297 // Respect a limited subset of the '-Bprefix' functionality in GCC by
1298 // attempting to use this prefix when lokup up program paths.
1299 for (Driver::prefix_list::const_iterator it = PrefixDirs.begin(),
1300 ie = PrefixDirs.end(); it != ie; ++it) {
1301 llvm::sys::Path P(*it);
1302 P.appendComponent(Name);
1304 if (WantFile ? !llvm::sys::fs::exists(P.str(), Exists) && Exists
1309 const ToolChain::path_list &List = TC.getProgramPaths();
1310 for (ToolChain::path_list::const_iterator
1311 it = List.begin(), ie = List.end(); it != ie; ++it) {
1312 llvm::sys::Path P(*it);
1313 P.appendComponent(Name);
1315 if (WantFile ? !llvm::sys::fs::exists(P.str(), Exists) && Exists
1320 // If all else failed, search the path.
1321 llvm::sys::Path P(llvm::sys::Program::FindProgramByName(Name));
1328 std::string Driver::GetTemporaryPath(const char *Suffix) const {
1329 // FIXME: This is lame; sys::Path should provide this function (in particular,
1330 // it should know how to find the temporary files dir).
1332 const char *TmpDir = ::getenv("TMPDIR");
1334 TmpDir = ::getenv("TEMP");
1336 TmpDir = ::getenv("TMP");
1339 llvm::sys::Path P(TmpDir);
1340 P.appendComponent("cc");
1341 if (P.makeUnique(false, &Error)) {
1342 Diag(clang::diag::err_drv_unable_to_make_temp) << Error;
1346 // FIXME: Grumble, makeUnique sometimes leaves the file around!? PR3837.
1347 P.eraseFromDisk(false, 0);
1349 P.appendSuffix(Suffix);
1353 const HostInfo *Driver::GetHostInfo(const char *TripleStr) const {
1354 llvm::PrettyStackTraceString CrashInfo("Constructing host");
1355 llvm::Triple Triple(llvm::Triple::normalize(TripleStr).c_str());
1357 // TCE is an osless target
1358 if (Triple.getArchName() == "tce")
1359 return createTCEHostInfo(*this, Triple);
1361 switch (Triple.getOS()) {
1362 case llvm::Triple::AuroraUX:
1363 return createAuroraUXHostInfo(*this, Triple);
1364 case llvm::Triple::Darwin:
1365 return createDarwinHostInfo(*this, Triple);
1366 case llvm::Triple::DragonFly:
1367 return createDragonFlyHostInfo(*this, Triple);
1368 case llvm::Triple::OpenBSD:
1369 return createOpenBSDHostInfo(*this, Triple);
1370 case llvm::Triple::NetBSD:
1371 return createNetBSDHostInfo(*this, Triple);
1372 case llvm::Triple::FreeBSD:
1373 return createFreeBSDHostInfo(*this, Triple);
1374 case llvm::Triple::Minix:
1375 return createMinixHostInfo(*this, Triple);
1376 case llvm::Triple::Linux:
1377 return createLinuxHostInfo(*this, Triple);
1378 case llvm::Triple::Win32:
1379 return createWindowsHostInfo(*this, Triple);
1380 case llvm::Triple::MinGW32:
1381 return createMinGWHostInfo(*this, Triple);
1383 return createUnknownHostInfo(*this, Triple);
1387 bool Driver::ShouldUseClangCompiler(const Compilation &C, const JobAction &JA,
1388 const llvm::Triple &Triple) const {
1389 // Check if user requested no clang, or clang doesn't understand this type (we
1390 // only handle single inputs for now).
1391 if (!CCCUseClang || JA.size() != 1 ||
1392 !types::isAcceptedByClang((*JA.begin())->getType()))
1395 // Otherwise make sure this is an action clang understands.
1396 if (isa<PreprocessJobAction>(JA)) {
1397 if (!CCCUseClangCPP) {
1398 Diag(clang::diag::warn_drv_not_using_clang_cpp);
1401 } else if (!isa<PrecompileJobAction>(JA) && !isa<CompileJobAction>(JA))
1404 // Use clang for C++?
1405 if (!CCCUseClangCXX && types::isCXX((*JA.begin())->getType())) {
1406 Diag(clang::diag::warn_drv_not_using_clang_cxx);
1410 // Always use clang for precompiling, AST generation, and rewriting,
1411 // regardless of archs.
1412 if (isa<PrecompileJobAction>(JA) ||
1413 types::isOnlyAcceptedByClang(JA.getType()))
1416 // Finally, don't use clang if this isn't one of the user specified archs to
1418 if (!CCCClangArchs.empty() && !CCCClangArchs.count(Triple.getArch())) {
1419 Diag(clang::diag::warn_drv_not_using_clang_arch) << Triple.getArchName();
1426 /// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the
1427 /// grouped values as integers. Numbers which are not provided are set to 0.
1429 /// \return True if the entire string was parsed (9.2), or all groups were
1430 /// parsed (10.3.5extrastuff).
1431 bool Driver::GetReleaseVersion(const char *Str, unsigned &Major,
1432 unsigned &Minor, unsigned &Micro,
1436 Major = Minor = Micro = 0;
1441 Major = (unsigned) strtol(Str, &End, 10);
1442 if (*Str != '\0' && *End == '\0')
1448 Minor = (unsigned) strtol(Str, &End, 10);
1449 if (*Str != '\0' && *End == '\0')
1455 Micro = (unsigned) strtol(Str, &End, 10);
1456 if (*Str != '\0' && *End == '\0')