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 // Skip the empty category.
402 for (unsigned i = 1, max = DiagnosticIDs::getNumberOfCategories();
404 OS << i << ',' << DiagnosticIDs::getCategoryNameFromID(i) << '\n';
407 bool Driver::HandleImmediateArgs(const Compilation &C) {
408 // The order these options are handled in gcc is all over the place, but we
409 // don't expect inconsistencies w.r.t. that to matter in practice.
411 if (C.getArgs().hasArg(options::OPT_dumpmachine)) {
412 llvm::outs() << C.getDefaultToolChain().getTripleString() << '\n';
416 if (C.getArgs().hasArg(options::OPT_dumpversion)) {
417 // Since -dumpversion is only implemented for pedantic GCC compatibility, we
418 // return an answer which matches our definition of __VERSION__.
420 // If we want to return a more correct answer some day, then we should
421 // introduce a non-pedantically GCC compatible mode to Clang in which we
422 // provide sensible definitions for -dumpversion, __VERSION__, etc.
423 llvm::outs() << "4.2.1\n";
427 if (C.getArgs().hasArg(options::OPT__print_diagnostic_categories)) {
428 PrintDiagnosticCategories(llvm::outs());
432 if (C.getArgs().hasArg(options::OPT__help) ||
433 C.getArgs().hasArg(options::OPT__help_hidden)) {
434 PrintHelp(C.getArgs().hasArg(options::OPT__help_hidden));
438 if (C.getArgs().hasArg(options::OPT__version)) {
439 // Follow gcc behavior and use stdout for --version and stderr for -v.
440 PrintVersion(C, llvm::outs());
444 if (C.getArgs().hasArg(options::OPT_v) ||
445 C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
446 PrintVersion(C, llvm::errs());
447 SuppressMissingInputWarning = true;
450 const ToolChain &TC = C.getDefaultToolChain();
451 if (C.getArgs().hasArg(options::OPT_print_search_dirs)) {
452 llvm::outs() << "programs: =";
453 for (ToolChain::path_list::const_iterator it = TC.getProgramPaths().begin(),
454 ie = TC.getProgramPaths().end(); it != ie; ++it) {
455 if (it != TC.getProgramPaths().begin())
459 llvm::outs() << "\n";
460 llvm::outs() << "libraries: =";
463 if (Arg *A = C.getArgs().getLastArg(options::OPT__sysroot_EQ))
464 sysroot = A->getValue(C.getArgs());
466 for (ToolChain::path_list::const_iterator it = TC.getFilePaths().begin(),
467 ie = TC.getFilePaths().end(); it != ie; ++it) {
468 if (it != TC.getFilePaths().begin())
470 const char *path = it->c_str();
472 llvm::outs() << sysroot << path + 1;
474 llvm::outs() << path;
476 llvm::outs() << "\n";
480 // FIXME: The following handlers should use a callback mechanism, we don't
481 // know what the client would like to do.
482 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) {
483 llvm::outs() << GetFilePath(A->getValue(C.getArgs()), TC) << "\n";
487 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_prog_name_EQ)) {
488 llvm::outs() << GetProgramPath(A->getValue(C.getArgs()), TC) << "\n";
492 if (C.getArgs().hasArg(options::OPT_print_libgcc_file_name)) {
493 llvm::outs() << GetFilePath("libgcc.a", TC) << "\n";
497 if (C.getArgs().hasArg(options::OPT_print_multi_lib)) {
498 // FIXME: We need tool chain support for this.
499 llvm::outs() << ".;\n";
501 switch (C.getDefaultToolChain().getTriple().getArch()) {
505 case llvm::Triple::x86_64:
506 llvm::outs() << "x86_64;@m64" << "\n";
509 case llvm::Triple::ppc64:
510 llvm::outs() << "ppc64;@m64" << "\n";
516 // FIXME: What is the difference between print-multi-directory and
517 // print-multi-os-directory?
518 if (C.getArgs().hasArg(options::OPT_print_multi_directory) ||
519 C.getArgs().hasArg(options::OPT_print_multi_os_directory)) {
520 switch (C.getDefaultToolChain().getTriple().getArch()) {
522 case llvm::Triple::x86:
523 case llvm::Triple::ppc:
524 llvm::outs() << "." << "\n";
527 case llvm::Triple::x86_64:
528 llvm::outs() << "." << "\n";
531 case llvm::Triple::ppc64:
532 llvm::outs() << "ppc64" << "\n";
541 static unsigned PrintActions1(const Compilation &C, Action *A,
542 std::map<Action*, unsigned> &Ids) {
547 llvm::raw_string_ostream os(str);
549 os << Action::getClassName(A->getKind()) << ", ";
550 if (InputAction *IA = dyn_cast<InputAction>(A)) {
551 os << "\"" << IA->getInputArg().getValue(C.getArgs()) << "\"";
552 } else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) {
553 os << '"' << (BIA->getArchName() ? BIA->getArchName() :
554 C.getDefaultToolChain().getArchName()) << '"'
555 << ", {" << PrintActions1(C, *BIA->begin(), Ids) << "}";
558 for (Action::iterator it = A->begin(), ie = A->end(); it != ie;) {
559 os << PrintActions1(C, *it, Ids);
567 unsigned Id = Ids.size();
569 llvm::errs() << Id << ": " << os.str() << ", "
570 << types::getTypeName(A->getType()) << "\n";
575 void Driver::PrintActions(const Compilation &C) const {
576 std::map<Action*, unsigned> Ids;
577 for (ActionList::const_iterator it = C.getActions().begin(),
578 ie = C.getActions().end(); it != ie; ++it)
579 PrintActions1(C, *it, Ids);
582 /// \brief Check whether the given input tree contains any compilation or
583 /// assembly actions.
584 static bool ContainsCompileOrAssembleAction(const Action *A) {
585 if (isa<CompileJobAction>(A) || isa<AssembleJobAction>(A))
588 for (Action::const_iterator it = A->begin(), ie = A->end(); it != ie; ++it)
589 if (ContainsCompileOrAssembleAction(*it))
595 void Driver::BuildUniversalActions(const ToolChain &TC,
596 const DerivedArgList &Args,
597 ActionList &Actions) const {
598 llvm::PrettyStackTraceString CrashInfo("Building universal build actions");
599 // Collect the list of architectures. Duplicates are allowed, but should only
600 // be handled once (in the order seen).
601 llvm::StringSet<> ArchNames;
602 llvm::SmallVector<const char *, 4> Archs;
603 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
607 if (A->getOption().matches(options::OPT_arch)) {
608 // Validate the option here; we don't save the type here because its
609 // particular spelling may participate in other driver choices.
610 llvm::Triple::ArchType Arch =
611 llvm::Triple::getArchTypeForDarwinArchName(A->getValue(Args));
612 if (Arch == llvm::Triple::UnknownArch) {
613 Diag(clang::diag::err_drv_invalid_arch_name)
614 << A->getAsString(Args);
619 if (ArchNames.insert(A->getValue(Args)))
620 Archs.push_back(A->getValue(Args));
624 // When there is no explicit arch for this platform, make sure we still bind
625 // the architecture (to the default) so that -Xarch_ is handled correctly.
629 // FIXME: We killed off some others but these aren't yet detected in a
630 // functional manner. If we added information to jobs about which "auxiliary"
631 // files they wrote then we could detect the conflict these cause downstream.
632 if (Archs.size() > 1) {
633 // No recovery needed, the point of this is just to prevent
634 // overwriting the same files.
635 if (const Arg *A = Args.getLastArg(options::OPT_save_temps))
636 Diag(clang::diag::err_drv_invalid_opt_with_multiple_archs)
637 << A->getAsString(Args);
640 ActionList SingleActions;
641 BuildActions(TC, Args, SingleActions);
643 // Add in arch bindings for every top level action, as well as lipo and
644 // dsymutil steps if needed.
645 for (unsigned i = 0, e = SingleActions.size(); i != e; ++i) {
646 Action *Act = SingleActions[i];
648 // Make sure we can lipo this kind of output. If not (and it is an actual
649 // output) then we disallow, since we can't create an output file with the
650 // right name without overwriting it. We could remove this oddity by just
651 // changing the output names to include the arch, which would also fix
652 // -save-temps. Compatibility wins for now.
654 if (Archs.size() > 1 && !types::canLipoType(Act->getType()))
655 Diag(clang::diag::err_drv_invalid_output_with_multiple_archs)
656 << types::getTypeName(Act->getType());
659 for (unsigned i = 0, e = Archs.size(); i != e; ++i) {
660 Inputs.push_back(new BindArchAction(Act, Archs[i]));
662 Inputs.back()->setOwnsInputs(false);
665 // Lipo if necessary, we do it this way because we need to set the arch flag
666 // so that -Xarch_ gets overwritten.
667 if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing)
668 Actions.append(Inputs.begin(), Inputs.end());
670 Actions.push_back(new LipoJobAction(Inputs, Act->getType()));
672 // Add a 'dsymutil' step if necessary, when debug info is enabled and we
673 // have a compile input. We need to run 'dsymutil' ourselves in such cases
674 // because the debug info will refer to a temporary object file which is
675 // will be removed at the end of the compilation process.
676 if (Act->getType() == types::TY_Image) {
677 Arg *A = Args.getLastArg(options::OPT_g_Group);
678 if (A && !A->getOption().matches(options::OPT_g0) &&
679 !A->getOption().matches(options::OPT_gstabs) &&
680 ContainsCompileOrAssembleAction(Actions.back())) {
682 Inputs.push_back(Actions.back());
685 Actions.push_back(new DsymutilJobAction(Inputs, types::TY_dSYM));
691 void Driver::BuildActions(const ToolChain &TC, const DerivedArgList &Args,
692 ActionList &Actions) const {
693 llvm::PrettyStackTraceString CrashInfo("Building compilation actions");
694 // Start by constructing the list of inputs and their types.
696 // Track the current user specified (-x) input. We also explicitly track the
697 // argument used to set the type; we only want to claim the type when we
698 // actually use it, so we warn about unused -x arguments.
699 types::ID InputType = types::TY_Nothing;
700 Arg *InputTypeArg = 0;
702 llvm::SmallVector<std::pair<types::ID, const Arg*>, 16> Inputs;
703 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
707 if (isa<InputOption>(A->getOption())) {
708 const char *Value = A->getValue(Args);
709 types::ID Ty = types::TY_INVALID;
711 // Infer the input type if necessary.
712 if (InputType == types::TY_Nothing) {
713 // If there was an explicit arg for this, claim it.
715 InputTypeArg->claim();
717 // stdin must be handled specially.
718 if (memcmp(Value, "-", 2) == 0) {
719 // If running with -E, treat as a C input (this changes the builtin
720 // macros, for example). This may be overridden by -ObjC below.
722 // Otherwise emit an error but still use a valid type to avoid
723 // spurious errors (e.g., no inputs).
724 if (!Args.hasArgNoClaim(options::OPT_E) && !CCCIsCPP)
725 Diag(clang::diag::err_drv_unknown_stdin_type);
728 // Otherwise lookup by extension.
729 // Fallback is C if invoked as C preprocessor or Object otherwise.
730 // We use a host hook here because Darwin at least has its own
731 // idea of what .s is.
732 if (const char *Ext = strrchr(Value, '.'))
733 Ty = TC.LookupTypeForExtension(Ext + 1);
735 if (Ty == types::TY_INVALID) {
739 Ty = types::TY_Object;
742 // If the driver is invoked as C++ compiler (like clang++ or c++) it
743 // should autodetect some input files as C++ for g++ compatibility.
745 types::ID OldTy = Ty;
746 Ty = types::lookupCXXTypeForCType(Ty);
749 Diag(clang::diag::warn_drv_treating_input_as_cxx)
750 << getTypeName(OldTy) << getTypeName(Ty);
754 // -ObjC and -ObjC++ override the default language, but only for "source
755 // files". We just treat everything that isn't a linker input as a
758 // FIXME: Clean this up if we move the phase sequence into the type.
759 if (Ty != types::TY_Object) {
760 if (Args.hasArg(options::OPT_ObjC))
762 else if (Args.hasArg(options::OPT_ObjCXX))
763 Ty = types::TY_ObjCXX;
766 assert(InputTypeArg && "InputType set w/o InputTypeArg");
767 InputTypeArg->claim();
771 // Check that the file exists, if enabled.
772 if (CheckInputsExist && memcmp(Value, "-", 2) != 0) {
773 llvm::SmallString<64> Path(Value);
774 if (Arg *WorkDir = Args.getLastArg(options::OPT_working_directory))
775 if (llvm::sys::path::is_absolute(Path.str())) {
776 Path = WorkDir->getValue(Args);
777 llvm::sys::path::append(Path, Value);
781 if (/*error_code ec =*/llvm::sys::fs::exists(Value, exists) || !exists)
782 Diag(clang::diag::err_drv_no_such_file) << Path.str();
784 Inputs.push_back(std::make_pair(Ty, A));
786 Inputs.push_back(std::make_pair(Ty, A));
788 } else if (A->getOption().isLinkerInput()) {
789 // Just treat as object type, we could make a special type for this if
791 Inputs.push_back(std::make_pair(types::TY_Object, A));
793 } else if (A->getOption().matches(options::OPT_x)) {
795 InputType = types::lookupTypeForTypeSpecifier(A->getValue(Args));
797 // Follow gcc behavior and treat as linker input for invalid -x
798 // options. Its not clear why we shouldn't just revert to unknown; but
799 // this isn't very important, we might as well be bug compatible.
801 Diag(clang::diag::err_drv_unknown_language) << A->getValue(Args);
802 InputType = types::TY_Object;
807 if (CCCIsCPP && Inputs.empty()) {
808 // If called as standalone preprocessor, stdin is processed
809 // if no other input is present.
810 unsigned Index = Args.getBaseArgs().MakeIndex("-");
811 Arg *A = Opts->ParseOneArg(Args, Index);
813 Inputs.push_back(std::make_pair(types::TY_C, A));
816 if (!SuppressMissingInputWarning && Inputs.empty()) {
817 Diag(clang::diag::err_drv_no_input_files);
821 // Determine which compilation mode we are in. We look for options which
822 // affect the phase, starting with the earliest phases, and record which
823 // option we used to determine the final phase.
824 Arg *FinalPhaseArg = 0;
825 phases::ID FinalPhase;
827 // -{E,M,MM} only run the preprocessor.
829 (FinalPhaseArg = Args.getLastArg(options::OPT_E)) ||
830 (FinalPhaseArg = Args.getLastArg(options::OPT_M, options::OPT_MM))) {
831 FinalPhase = phases::Preprocess;
833 // -{fsyntax-only,-analyze,emit-ast,S} only run up to the compiler.
834 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_fsyntax_only)) ||
835 (FinalPhaseArg = Args.getLastArg(options::OPT_rewrite_objc)) ||
836 (FinalPhaseArg = Args.getLastArg(options::OPT__analyze,
837 options::OPT__analyze_auto)) ||
838 (FinalPhaseArg = Args.getLastArg(options::OPT_emit_ast)) ||
839 (FinalPhaseArg = Args.getLastArg(options::OPT_S))) {
840 FinalPhase = phases::Compile;
842 // -c only runs up to the assembler.
843 } else if ((FinalPhaseArg = Args.getLastArg(options::OPT_c))) {
844 FinalPhase = phases::Assemble;
846 // Otherwise do everything.
848 FinalPhase = phases::Link;
850 // Reject -Z* at the top level, these options should never have been exposed
852 if (Arg *A = Args.getLastArg(options::OPT_Z_Joined))
853 Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args);
855 // Construct the actions to perform.
856 ActionList LinkerInputs;
857 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
858 types::ID InputType = Inputs[i].first;
859 const Arg *InputArg = Inputs[i].second;
861 unsigned NumSteps = types::getNumCompilationPhases(InputType);
862 assert(NumSteps && "Invalid number of steps!");
864 // If the first step comes after the final phase we are doing as part of
865 // this compilation, warn the user about it.
866 phases::ID InitialPhase = types::getCompilationPhase(InputType, 0);
867 if (InitialPhase > FinalPhase) {
868 // Claim here to avoid the more general unused warning.
871 // Suppress all unused style warnings with -Qunused-arguments
872 if (Args.hasArg(options::OPT_Qunused_arguments))
875 // Special case '-E' warning on a previously preprocessed file to make
877 if (InitialPhase == phases::Compile && FinalPhase == phases::Preprocess &&
878 getPreprocessedType(InputType) == types::TY_INVALID)
879 Diag(clang::diag::warn_drv_preprocessed_input_file_unused)
880 << InputArg->getAsString(Args)
881 << FinalPhaseArg->getOption().getName();
883 Diag(clang::diag::warn_drv_input_file_unused)
884 << InputArg->getAsString(Args)
885 << getPhaseName(InitialPhase)
886 << FinalPhaseArg->getOption().getName();
890 // Build the pipeline for this file.
891 llvm::OwningPtr<Action> Current(new InputAction(*InputArg, InputType));
892 for (unsigned i = 0; i != NumSteps; ++i) {
893 phases::ID Phase = types::getCompilationPhase(InputType, i);
895 // We are done if this step is past what the user requested.
896 if (Phase > FinalPhase)
899 // Queue linker inputs.
900 if (Phase == phases::Link) {
901 assert(i + 1 == NumSteps && "linking must be final compilation step.");
902 LinkerInputs.push_back(Current.take());
906 // Some types skip the assembler phase (e.g., llvm-bc), but we can't
907 // encode this in the steps because the intermediate type depends on
908 // arguments. Just special case here.
909 if (Phase == phases::Assemble && Current->getType() != types::TY_PP_Asm)
912 // Otherwise construct the appropriate action.
913 Current.reset(ConstructPhaseAction(Args, Phase, Current.take()));
914 if (Current->getType() == types::TY_Nothing)
918 // If we ended with something, add to the output list.
920 Actions.push_back(Current.take());
923 // Add a link action if necessary.
924 if (!LinkerInputs.empty())
925 Actions.push_back(new LinkJobAction(LinkerInputs, types::TY_Image));
927 // If we are linking, claim any options which are obviously only used for
929 if (FinalPhase == phases::Link)
930 Args.ClaimAllArgs(options::OPT_CompileOnly_Group);
933 Action *Driver::ConstructPhaseAction(const ArgList &Args, phases::ID Phase,
934 Action *Input) const {
935 llvm::PrettyStackTraceString CrashInfo("Constructing phase actions");
936 // Build the appropriate action.
938 case phases::Link: assert(0 && "link action invalid here.");
939 case phases::Preprocess: {
941 // -{M, MM} alter the output type.
942 if (Args.hasArg(options::OPT_M, options::OPT_MM)) {
943 OutputTy = types::TY_Dependencies;
945 OutputTy = types::getPreprocessedType(Input->getType());
946 assert(OutputTy != types::TY_INVALID &&
947 "Cannot preprocess this input type!");
949 return new PreprocessJobAction(Input, OutputTy);
951 case phases::Precompile:
952 return new PrecompileJobAction(Input, types::TY_PCH);
953 case phases::Compile: {
954 if (Args.hasArg(options::OPT_fsyntax_only)) {
955 return new CompileJobAction(Input, types::TY_Nothing);
956 } else if (Args.hasArg(options::OPT_rewrite_objc)) {
957 return new CompileJobAction(Input, types::TY_RewrittenObjC);
958 } else if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto)) {
959 return new AnalyzeJobAction(Input, types::TY_Plist);
960 } else if (Args.hasArg(options::OPT_emit_ast)) {
961 return new CompileJobAction(Input, types::TY_AST);
962 } else if (IsUsingLTO(Args)) {
964 Args.hasArg(options::OPT_S) ? types::TY_LTO_IR : types::TY_LTO_BC;
965 return new CompileJobAction(Input, Output);
967 return new CompileJobAction(Input, types::TY_PP_Asm);
970 case phases::Assemble:
971 return new AssembleJobAction(Input, types::TY_Object);
974 assert(0 && "invalid phase in ConstructPhaseAction");
978 bool Driver::IsUsingLTO(const ArgList &Args) const {
979 // Check for -emit-llvm or -flto.
980 if (Args.hasArg(options::OPT_emit_llvm) ||
981 Args.hasFlag(options::OPT_flto, options::OPT_fno_lto, false))
985 if (const Arg *A = Args.getLastArg(options::OPT_O_Group))
986 return A->getOption().matches(options::OPT_O4);
991 void Driver::BuildJobs(Compilation &C) const {
992 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
994 Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o);
996 // It is an error to provide a -o option if we are making multiple output
999 unsigned NumOutputs = 0;
1000 for (ActionList::const_iterator it = C.getActions().begin(),
1001 ie = C.getActions().end(); it != ie; ++it)
1002 if ((*it)->getType() != types::TY_Nothing)
1005 if (NumOutputs > 1) {
1006 Diag(clang::diag::err_drv_output_argument_with_multiple_files);
1011 for (ActionList::const_iterator it = C.getActions().begin(),
1012 ie = C.getActions().end(); it != ie; ++it) {
1015 // If we are linking an image for multiple archs then the linker wants
1016 // -arch_multiple and -final_output <final image name>. Unfortunately, this
1017 // doesn't fit in cleanly because we have to pass this information down.
1019 // FIXME: This is a hack; find a cleaner way to integrate this into the
1021 const char *LinkingOutput = 0;
1022 if (isa<LipoJobAction>(A)) {
1024 LinkingOutput = FinalOutput->getValue(C.getArgs());
1026 LinkingOutput = DefaultImageName.c_str();
1030 BuildJobsForAction(C, A, &C.getDefaultToolChain(),
1032 /*AtTopLevel*/ true,
1033 /*LinkingOutput*/ LinkingOutput,
1037 // If the user passed -Qunused-arguments or there were errors, don't warn
1038 // about any unused arguments.
1039 if (Diags.hasErrorOccurred() ||
1040 C.getArgs().hasArg(options::OPT_Qunused_arguments))
1044 (void) C.getArgs().hasArg(options::OPT__HASH_HASH_HASH);
1046 for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end();
1050 // FIXME: It would be nice to be able to send the argument to the
1051 // Diagnostic, so that extra values, position, and so on could be printed.
1052 if (!A->isClaimed()) {
1053 if (A->getOption().hasNoArgumentUnused())
1056 // Suppress the warning automatically if this is just a flag, and it is an
1057 // instance of an argument we already claimed.
1058 const Option &Opt = A->getOption();
1059 if (isa<FlagOption>(Opt)) {
1060 bool DuplicateClaimed = false;
1062 for (arg_iterator it = C.getArgs().filtered_begin(&Opt),
1063 ie = C.getArgs().filtered_end(); it != ie; ++it) {
1064 if ((*it)->isClaimed()) {
1065 DuplicateClaimed = true;
1070 if (DuplicateClaimed)
1074 Diag(clang::diag::warn_drv_unused_argument)
1075 << A->getAsString(C.getArgs());
1080 static const Tool &SelectToolForJob(Compilation &C, const ToolChain *TC,
1081 const JobAction *JA,
1082 const ActionList *&Inputs) {
1083 const Tool *ToolForJob = 0;
1085 // See if we should look for a compiler with an integrated assembler. We match
1086 // bottom up, so what we are actually looking for is an assembler job with a
1089 // FIXME: This doesn't belong here, but ideally we will support static soon
1091 bool HasStatic = (C.getArgs().hasArg(options::OPT_mkernel) ||
1092 C.getArgs().hasArg(options::OPT_static) ||
1093 C.getArgs().hasArg(options::OPT_fapple_kext));
1094 bool IsDarwin = TC->getTriple().getOS() == llvm::Triple::Darwin;
1095 bool IsIADefault = TC->IsIntegratedAssemblerDefault() &&
1096 !(HasStatic && IsDarwin);
1097 if (C.getArgs().hasFlag(options::OPT_integrated_as,
1098 options::OPT_no_integrated_as,
1100 !C.getArgs().hasArg(options::OPT_save_temps) &&
1101 isa<AssembleJobAction>(JA) &&
1102 Inputs->size() == 1 && isa<CompileJobAction>(*Inputs->begin())) {
1103 const Tool &Compiler = TC->SelectTool(
1104 C, cast<JobAction>(**Inputs->begin()), (*Inputs)[0]->getInputs());
1105 if (Compiler.hasIntegratedAssembler()) {
1106 Inputs = &(*Inputs)[0]->getInputs();
1107 ToolForJob = &Compiler;
1111 // Otherwise use the tool for the current job.
1113 ToolForJob = &TC->SelectTool(C, *JA, *Inputs);
1115 // See if we should use an integrated preprocessor. We do so when we have
1116 // exactly one input, since this is the only use case we care about
1117 // (irrelevant since we don't support combine yet).
1118 if (Inputs->size() == 1 && isa<PreprocessJobAction>(*Inputs->begin()) &&
1119 !C.getArgs().hasArg(options::OPT_no_integrated_cpp) &&
1120 !C.getArgs().hasArg(options::OPT_traditional_cpp) &&
1121 !C.getArgs().hasArg(options::OPT_save_temps) &&
1122 ToolForJob->hasIntegratedCPP())
1123 Inputs = &(*Inputs)[0]->getInputs();
1128 void Driver::BuildJobsForAction(Compilation &C,
1130 const ToolChain *TC,
1131 const char *BoundArch,
1133 const char *LinkingOutput,
1134 InputInfo &Result) const {
1135 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
1137 if (const InputAction *IA = dyn_cast<InputAction>(A)) {
1138 // FIXME: It would be nice to not claim this here; maybe the old scheme of
1139 // just using Args was better?
1140 const Arg &Input = IA->getInputArg();
1142 if (Input.getOption().matches(options::OPT_INPUT)) {
1143 const char *Name = Input.getValue(C.getArgs());
1144 Result = InputInfo(Name, A->getType(), Name);
1146 Result = InputInfo(&Input, A->getType(), "");
1150 if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) {
1151 const ToolChain *TC = &C.getDefaultToolChain();
1154 if (BAA->getArchName())
1155 TC = Host->CreateToolChain(C.getArgs(), BAA->getArchName());
1157 BuildJobsForAction(C, *BAA->begin(), TC, BAA->getArchName(),
1158 AtTopLevel, LinkingOutput, Result);
1162 const ActionList *Inputs = &A->getInputs();
1164 const JobAction *JA = cast<JobAction>(A);
1165 const Tool &T = SelectToolForJob(C, TC, JA, Inputs);
1167 // Only use pipes when there is exactly one input.
1168 InputInfoList InputInfos;
1169 for (ActionList::const_iterator it = Inputs->begin(), ie = Inputs->end();
1171 // Treat dsymutil sub-jobs as being at the top-level too, they shouldn't get
1172 // temporary output names.
1174 // FIXME: Clean this up.
1175 bool SubJobAtTopLevel = false;
1176 if (AtTopLevel && isa<DsymutilJobAction>(A))
1177 SubJobAtTopLevel = true;
1180 BuildJobsForAction(C, *it, TC, BoundArch,
1181 SubJobAtTopLevel, LinkingOutput, II);
1182 InputInfos.push_back(II);
1185 // Always use the first input as the base input.
1186 const char *BaseInput = InputInfos[0].getBaseInput();
1188 // ... except dsymutil actions, which use their actual input as the base
1190 if (JA->getType() == types::TY_dSYM)
1191 BaseInput = InputInfos[0].getFilename();
1193 // Determine the place to write output to, if any.
1194 if (JA->getType() == types::TY_Nothing) {
1195 Result = InputInfo(A->getType(), BaseInput);
1197 Result = InputInfo(GetNamedOutputPath(C, *JA, BaseInput, AtTopLevel),
1198 A->getType(), BaseInput);
1201 if (CCCPrintBindings) {
1202 llvm::errs() << "# \"" << T.getToolChain().getTripleString() << '"'
1203 << " - \"" << T.getName() << "\", inputs: [";
1204 for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) {
1205 llvm::errs() << InputInfos[i].getAsString();
1207 llvm::errs() << ", ";
1209 llvm::errs() << "], output: " << Result.getAsString() << "\n";
1211 T.ConstructJob(C, *JA, Result, InputInfos,
1212 C.getArgsForToolChain(TC, BoundArch), LinkingOutput);
1216 const char *Driver::GetNamedOutputPath(Compilation &C,
1217 const JobAction &JA,
1218 const char *BaseInput,
1219 bool AtTopLevel) const {
1220 llvm::PrettyStackTraceString CrashInfo("Computing output path");
1221 // Output to a user requested destination?
1222 if (AtTopLevel && !isa<DsymutilJobAction>(JA)) {
1223 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
1224 return C.addResultFile(FinalOutput->getValue(C.getArgs()));
1227 // Default to writing to stdout?
1228 if (AtTopLevel && isa<PreprocessJobAction>(JA))
1231 // Output to a temporary file?
1232 if (!AtTopLevel && !C.getArgs().hasArg(options::OPT_save_temps)) {
1233 std::string TmpName =
1234 GetTemporaryPath(types::getTypeTempSuffix(JA.getType()));
1235 return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str()));
1238 llvm::SmallString<128> BasePath(BaseInput);
1239 llvm::StringRef BaseName;
1241 // Dsymutil actions should use the full path.
1242 if (isa<DsymutilJobAction>(JA))
1243 BaseName = BasePath;
1245 BaseName = llvm::sys::path::filename(BasePath);
1247 // Determine what the derived output name should be.
1248 const char *NamedOutput;
1249 if (JA.getType() == types::TY_Image) {
1250 NamedOutput = DefaultImageName.c_str();
1252 const char *Suffix = types::getTypeTempSuffix(JA.getType());
1253 assert(Suffix && "All types used for output should have a suffix.");
1255 std::string::size_type End = std::string::npos;
1256 if (!types::appendSuffixForType(JA.getType()))
1257 End = BaseName.rfind('.');
1258 std::string Suffixed(BaseName.substr(0, End));
1261 NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str());
1264 // If we're saving temps and the temp filename conflicts with the input
1265 // filename, then avoid overwriting input file.
1266 if (!AtTopLevel && C.getArgs().hasArg(options::OPT_save_temps) &&
1267 NamedOutput == BaseName) {
1268 std::string TmpName =
1269 GetTemporaryPath(types::getTypeTempSuffix(JA.getType()));
1270 return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str()));
1273 // As an annoying special case, PCH generation doesn't strip the pathname.
1274 if (JA.getType() == types::TY_PCH) {
1275 llvm::sys::path::remove_filename(BasePath);
1276 if (BasePath.empty())
1277 BasePath = NamedOutput;
1279 llvm::sys::path::append(BasePath, NamedOutput);
1280 return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str()));
1282 return C.addResultFile(NamedOutput);
1286 std::string Driver::GetFilePath(const char *Name, const ToolChain &TC) const {
1287 // Respect a limited subset of the '-Bprefix' functionality in GCC by
1288 // attempting to use this prefix when lokup up program paths.
1289 for (Driver::prefix_list::const_iterator it = PrefixDirs.begin(),
1290 ie = PrefixDirs.end(); it != ie; ++it) {
1291 std::string Dir(*it);
1295 Dir = SysRoot + Dir.substr(1);
1296 llvm::sys::Path P(Dir);
1297 P.appendComponent(Name);
1299 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists)
1303 const ToolChain::path_list &List = TC.getFilePaths();
1304 for (ToolChain::path_list::const_iterator
1305 it = List.begin(), ie = List.end(); it != ie; ++it) {
1306 std::string Dir(*it);
1310 Dir = SysRoot + Dir.substr(1);
1311 llvm::sys::Path P(Dir);
1312 P.appendComponent(Name);
1314 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists)
1321 std::string Driver::GetProgramPath(const char *Name, const ToolChain &TC,
1322 bool WantFile) const {
1323 // Respect a limited subset of the '-Bprefix' functionality in GCC by
1324 // attempting to use this prefix when lokup up program paths.
1325 for (Driver::prefix_list::const_iterator it = PrefixDirs.begin(),
1326 ie = PrefixDirs.end(); it != ie; ++it) {
1327 llvm::sys::Path P(*it);
1328 P.appendComponent(Name);
1330 if (WantFile ? !llvm::sys::fs::exists(P.str(), Exists) && Exists
1335 const ToolChain::path_list &List = TC.getProgramPaths();
1336 for (ToolChain::path_list::const_iterator
1337 it = List.begin(), ie = List.end(); it != ie; ++it) {
1338 llvm::sys::Path P(*it);
1339 P.appendComponent(Name);
1341 if (WantFile ? !llvm::sys::fs::exists(P.str(), Exists) && Exists
1346 // If all else failed, search the path.
1347 llvm::sys::Path P(llvm::sys::Program::FindProgramByName(Name));
1354 std::string Driver::GetTemporaryPath(const char *Suffix) const {
1355 // FIXME: This is lame; sys::Path should provide this function (in particular,
1356 // it should know how to find the temporary files dir).
1358 const char *TmpDir = ::getenv("TMPDIR");
1360 TmpDir = ::getenv("TEMP");
1362 TmpDir = ::getenv("TMP");
1365 llvm::sys::Path P(TmpDir);
1366 P.appendComponent("cc");
1367 if (P.makeUnique(false, &Error)) {
1368 Diag(clang::diag::err_drv_unable_to_make_temp) << Error;
1372 // FIXME: Grumble, makeUnique sometimes leaves the file around!? PR3837.
1373 P.eraseFromDisk(false, 0);
1375 P.appendSuffix(Suffix);
1379 const HostInfo *Driver::GetHostInfo(const char *TripleStr) const {
1380 llvm::PrettyStackTraceString CrashInfo("Constructing host");
1381 llvm::Triple Triple(llvm::Triple::normalize(TripleStr).c_str());
1383 // TCE is an osless target
1384 if (Triple.getArchName() == "tce")
1385 return createTCEHostInfo(*this, Triple);
1387 switch (Triple.getOS()) {
1388 case llvm::Triple::AuroraUX:
1389 return createAuroraUXHostInfo(*this, Triple);
1390 case llvm::Triple::Darwin:
1391 return createDarwinHostInfo(*this, Triple);
1392 case llvm::Triple::DragonFly:
1393 return createDragonFlyHostInfo(*this, Triple);
1394 case llvm::Triple::OpenBSD:
1395 return createOpenBSDHostInfo(*this, Triple);
1396 case llvm::Triple::NetBSD:
1397 return createNetBSDHostInfo(*this, Triple);
1398 case llvm::Triple::FreeBSD:
1399 return createFreeBSDHostInfo(*this, Triple);
1400 case llvm::Triple::Minix:
1401 return createMinixHostInfo(*this, Triple);
1402 case llvm::Triple::Linux:
1403 return createLinuxHostInfo(*this, Triple);
1404 case llvm::Triple::Win32:
1405 return createWindowsHostInfo(*this, Triple);
1406 case llvm::Triple::MinGW32:
1407 return createMinGWHostInfo(*this, Triple);
1409 return createUnknownHostInfo(*this, Triple);
1413 bool Driver::ShouldUseClangCompiler(const Compilation &C, const JobAction &JA,
1414 const llvm::Triple &Triple) const {
1415 // Check if user requested no clang, or clang doesn't understand this type (we
1416 // only handle single inputs for now).
1417 if (!CCCUseClang || JA.size() != 1 ||
1418 !types::isAcceptedByClang((*JA.begin())->getType()))
1421 // Otherwise make sure this is an action clang understands.
1422 if (isa<PreprocessJobAction>(JA)) {
1423 if (!CCCUseClangCPP) {
1424 Diag(clang::diag::warn_drv_not_using_clang_cpp);
1427 } else if (!isa<PrecompileJobAction>(JA) && !isa<CompileJobAction>(JA))
1430 // Use clang for C++?
1431 if (!CCCUseClangCXX && types::isCXX((*JA.begin())->getType())) {
1432 Diag(clang::diag::warn_drv_not_using_clang_cxx);
1436 // Always use clang for precompiling, AST generation, and rewriting,
1437 // regardless of archs.
1438 if (isa<PrecompileJobAction>(JA) ||
1439 types::isOnlyAcceptedByClang(JA.getType()))
1442 // Finally, don't use clang if this isn't one of the user specified archs to
1444 if (!CCCClangArchs.empty() && !CCCClangArchs.count(Triple.getArch())) {
1445 Diag(clang::diag::warn_drv_not_using_clang_arch) << Triple.getArchName();
1452 /// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the
1453 /// grouped values as integers. Numbers which are not provided are set to 0.
1455 /// \return True if the entire string was parsed (9.2), or all groups were
1456 /// parsed (10.3.5extrastuff).
1457 bool Driver::GetReleaseVersion(const char *Str, unsigned &Major,
1458 unsigned &Minor, unsigned &Micro,
1462 Major = Minor = Micro = 0;
1467 Major = (unsigned) strtol(Str, &End, 10);
1468 if (*Str != '\0' && *End == '\0')
1474 Minor = (unsigned) strtol(Str, &End, 10);
1475 if (*Str != '\0' && *End == '\0')
1481 Micro = (unsigned) strtol(Str, &End, 10);
1482 if (*Str != '\0' && *End == '\0')