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/Job.h"
18 #include "clang/Driver/OptTable.h"
19 #include "clang/Driver/Option.h"
20 #include "clang/Driver/Options.h"
21 #include "clang/Driver/Tool.h"
22 #include "clang/Driver/ToolChain.h"
24 #include "clang/Basic/Version.h"
26 #include "llvm/ADT/ArrayRef.h"
27 #include "llvm/ADT/StringSet.h"
28 #include "llvm/ADT/OwningPtr.h"
29 #include "llvm/Support/ErrorHandling.h"
30 #include "llvm/Support/PrettyStackTrace.h"
31 #include "llvm/Support/raw_ostream.h"
32 #include "llvm/Support/FileSystem.h"
33 #include "llvm/Support/Path.h"
34 #include "llvm/Support/Program.h"
36 #include "InputInfo.h"
37 #include "ToolChains.h"
41 #include "clang/Config/config.h"
43 using namespace clang::driver;
44 using namespace clang;
46 Driver::Driver(StringRef ClangExecutable,
47 StringRef DefaultTargetTriple,
48 StringRef DefaultImageName,
50 DiagnosticsEngine &Diags)
51 : Opts(createDriverOptTable()), Diags(Diags),
52 ClangExecutable(ClangExecutable), SysRoot(DEFAULT_SYSROOT),
53 UseStdLib(true), DefaultTargetTriple(DefaultTargetTriple),
54 DefaultImageName(DefaultImageName),
55 DriverTitle("clang LLVM compiler"),
56 CCPrintOptionsFilename(0), CCPrintHeadersFilename(0),
57 CCLogDiagnosticsFilename(0), CCCIsCXX(false),
58 CCCIsCPP(false),CCCEcho(false), CCCPrintBindings(false),
59 CCPrintOptions(false), CCPrintHeaders(false), CCLogDiagnostics(false),
60 CCGenDiagnostics(false), CCCGenericGCCName(""), CheckInputsExist(true),
61 CCCUsePCH(true), SuppressMissingInputWarning(false) {
63 Name = llvm::sys::path::stem(ClangExecutable);
64 Dir = llvm::sys::path::parent_path(ClangExecutable);
66 // Compute the path to the resource directory.
67 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
68 SmallString<128> P(Dir);
69 if (ClangResourceDir != "")
70 llvm::sys::path::append(P, ClangResourceDir);
72 llvm::sys::path::append(P, "..", "lib", "clang", CLANG_VERSION_STRING);
73 ResourceDir = P.str();
79 for (llvm::StringMap<ToolChain *>::iterator I = ToolChains.begin(),
85 InputArgList *Driver::ParseArgStrings(ArrayRef<const char *> ArgList) {
86 llvm::PrettyStackTraceString CrashInfo("Command line argument parsing");
87 unsigned MissingArgIndex, MissingArgCount;
88 InputArgList *Args = getOpts().ParseArgs(ArgList.begin(), ArgList.end(),
89 MissingArgIndex, MissingArgCount);
91 // Check for missing argument error.
93 Diag(clang::diag::err_drv_missing_argument)
94 << Args->getArgString(MissingArgIndex) << MissingArgCount;
96 // Check for unsupported options.
97 for (ArgList::const_iterator it = Args->begin(), ie = Args->end();
100 if (A->getOption().hasFlag(options::Unsupported)) {
101 Diag(clang::diag::err_drv_unsupported_opt) << A->getAsString(*Args);
105 // Warn about -mcpu= without an argument.
106 if (A->getOption().matches(options::OPT_mcpu_EQ) &&
107 A->containsValue("")) {
108 Diag(clang::diag::warn_drv_empty_joined_argument) <<
109 A->getAsString(*Args);
116 // Determine which compilation mode we are in. We look for options which
117 // affect the phase, starting with the earliest phases, and record which
118 // option we used to determine the final phase.
119 phases::ID Driver::getFinalPhase(const DerivedArgList &DAL, Arg **FinalPhaseArg)
122 phases::ID FinalPhase;
124 // -{E,M,MM} only run the preprocessor.
126 (PhaseArg = DAL.getLastArg(options::OPT_E)) ||
127 (PhaseArg = DAL.getLastArg(options::OPT_M, options::OPT_MM))) {
128 FinalPhase = phases::Preprocess;
130 // -{fsyntax-only,-analyze,emit-ast,S} only run up to the compiler.
131 } else if ((PhaseArg = DAL.getLastArg(options::OPT_fsyntax_only)) ||
132 (PhaseArg = DAL.getLastArg(options::OPT_rewrite_objc)) ||
133 (PhaseArg = DAL.getLastArg(options::OPT_rewrite_legacy_objc)) ||
134 (PhaseArg = DAL.getLastArg(options::OPT__migrate)) ||
135 (PhaseArg = DAL.getLastArg(options::OPT__analyze,
136 options::OPT__analyze_auto)) ||
137 (PhaseArg = DAL.getLastArg(options::OPT_emit_ast)) ||
138 (PhaseArg = DAL.getLastArg(options::OPT_S))) {
139 FinalPhase = phases::Compile;
141 // -c only runs up to the assembler.
142 } else if ((PhaseArg = DAL.getLastArg(options::OPT_c))) {
143 FinalPhase = phases::Assemble;
145 // Otherwise do everything.
147 FinalPhase = phases::Link;
150 *FinalPhaseArg = PhaseArg;
155 DerivedArgList *Driver::TranslateInputArgs(const InputArgList &Args) const {
156 DerivedArgList *DAL = new DerivedArgList(Args);
158 bool HasNostdlib = Args.hasArg(options::OPT_nostdlib);
159 for (ArgList::const_iterator it = Args.begin(),
160 ie = Args.end(); it != ie; ++it) {
163 // Unfortunately, we have to parse some forwarding options (-Xassembler,
164 // -Xlinker, -Xpreprocessor) because we either integrate their functionality
165 // (assembler and preprocessor), or bypass a previous driver ('collect2').
167 // Rewrite linker options, to replace --no-demangle with a custom internal
169 if ((A->getOption().matches(options::OPT_Wl_COMMA) ||
170 A->getOption().matches(options::OPT_Xlinker)) &&
171 A->containsValue("--no-demangle")) {
172 // Add the rewritten no-demangle argument.
173 DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_Xlinker__no_demangle));
175 // Add the remaining values as Xlinker arguments.
176 for (unsigned i = 0, e = A->getNumValues(); i != e; ++i)
177 if (StringRef(A->getValue(i)) != "--no-demangle")
178 DAL->AddSeparateArg(A, Opts->getOption(options::OPT_Xlinker),
184 // Rewrite preprocessor options, to replace -Wp,-MD,FOO which is used by
185 // some build systems. We don't try to be complete here because we don't
186 // care to encourage this usage model.
187 if (A->getOption().matches(options::OPT_Wp_COMMA) &&
188 (A->getValue(0) == StringRef("-MD") ||
189 A->getValue(0) == StringRef("-MMD"))) {
190 // Rewrite to -MD/-MMD along with -MF.
191 if (A->getValue(0) == StringRef("-MD"))
192 DAL->AddFlagArg(A, Opts->getOption(options::OPT_MD));
194 DAL->AddFlagArg(A, Opts->getOption(options::OPT_MMD));
195 if (A->getNumValues() == 2)
196 DAL->AddSeparateArg(A, Opts->getOption(options::OPT_MF),
201 // Rewrite reserved library names.
202 if (A->getOption().matches(options::OPT_l)) {
203 StringRef Value = A->getValue();
205 // Rewrite unless -nostdlib is present.
206 if (!HasNostdlib && Value == "stdc++") {
207 DAL->AddFlagArg(A, Opts->getOption(
208 options::OPT_Z_reserved_lib_stdcxx));
212 // Rewrite unconditionally.
213 if (Value == "cc_kext") {
214 DAL->AddFlagArg(A, Opts->getOption(
215 options::OPT_Z_reserved_lib_cckext));
223 // Add a default value of -mlinker-version=, if one was given and the user
224 // didn't specify one.
225 #if defined(HOST_LINK_VERSION)
226 if (!Args.hasArg(options::OPT_mlinker_version_EQ)) {
227 DAL->AddJoinedArg(0, Opts->getOption(options::OPT_mlinker_version_EQ),
229 DAL->getLastArg(options::OPT_mlinker_version_EQ)->claim();
236 Compilation *Driver::BuildCompilation(ArrayRef<const char *> ArgList) {
237 llvm::PrettyStackTraceString CrashInfo("Compilation construction");
239 // FIXME: Handle environment options which affect driver behavior, somewhere
240 // (client?). GCC_EXEC_PREFIX, LPATH, CC_PRINT_OPTIONS.
242 if (char *env = ::getenv("COMPILER_PATH")) {
243 StringRef CompilerPath = env;
244 while (!CompilerPath.empty()) {
245 std::pair<StringRef, StringRef> Split = CompilerPath.split(':');
246 PrefixDirs.push_back(Split.first);
247 CompilerPath = Split.second;
251 // FIXME: What are we going to do with -V and -b?
253 // FIXME: This stuff needs to go into the Compilation, not the driver.
254 bool CCCPrintOptions = false, CCCPrintActions = false;
256 InputArgList *Args = ParseArgStrings(ArgList.slice(1));
258 // -no-canonical-prefixes is used very early in main.
259 Args->ClaimAllArgs(options::OPT_no_canonical_prefixes);
262 Args->ClaimAllArgs(options::OPT_pipe);
264 // Extract -ccc args.
266 // FIXME: We need to figure out where this behavior should live. Most of it
267 // should be outside in the client; the parts that aren't should have proper
268 // options, either by introducing new ones or by overloading gcc ones like -V
270 CCCPrintOptions = Args->hasArg(options::OPT_ccc_print_options);
271 CCCPrintActions = Args->hasArg(options::OPT_ccc_print_phases);
272 CCCPrintBindings = Args->hasArg(options::OPT_ccc_print_bindings);
273 CCCIsCXX = Args->hasArg(options::OPT_ccc_cxx) || CCCIsCXX;
274 CCCEcho = Args->hasArg(options::OPT_ccc_echo);
275 if (const Arg *A = Args->getLastArg(options::OPT_ccc_gcc_name))
276 CCCGenericGCCName = A->getValue();
277 CCCUsePCH = Args->hasFlag(options::OPT_ccc_pch_is_pch,
278 options::OPT_ccc_pch_is_pth);
279 // FIXME: DefaultTargetTriple is used by the target-prefixed calls to as/ld
280 // and getToolChain is const.
281 if (const Arg *A = Args->getLastArg(options::OPT_target))
282 DefaultTargetTriple = A->getValue();
283 if (const Arg *A = Args->getLastArg(options::OPT_ccc_install_dir))
284 Dir = InstalledDir = A->getValue();
285 for (arg_iterator it = Args->filtered_begin(options::OPT_B),
286 ie = Args->filtered_end(); it != ie; ++it) {
289 PrefixDirs.push_back(A->getValue(0));
291 if (const Arg *A = Args->getLastArg(options::OPT__sysroot_EQ))
292 SysRoot = A->getValue();
293 if (Args->hasArg(options::OPT_nostdlib))
296 // Perform the default argument translations.
297 DerivedArgList *TranslatedArgs = TranslateInputArgs(*Args);
299 // Owned by the host.
300 const ToolChain &TC = getToolChain(*Args);
302 // The compilation takes ownership of Args.
303 Compilation *C = new Compilation(*this, TC, Args, TranslatedArgs);
305 // FIXME: This behavior shouldn't be here.
306 if (CCCPrintOptions) {
307 PrintOptions(C->getInputArgs());
311 if (!HandleImmediateArgs(*C))
314 // Construct the list of inputs.
316 BuildInputs(C->getDefaultToolChain(), C->getArgs(), Inputs);
318 // Construct the list of abstract actions to perform for this compilation. On
319 // Darwin target OSes this uses the driver-driver and universal actions.
320 if (TC.getTriple().isOSDarwin())
321 BuildUniversalActions(C->getDefaultToolChain(), C->getArgs(),
322 Inputs, C->getActions());
324 BuildActions(C->getDefaultToolChain(), C->getArgs(), Inputs,
327 if (CCCPrintActions) {
337 // When clang crashes, produce diagnostic information including the fully
338 // preprocessed source file(s). Request that the developer attach the
339 // diagnostic information to a bug report.
340 void Driver::generateCompilationDiagnostics(Compilation &C,
341 const Command *FailingCommand) {
342 if (C.getArgs().hasArg(options::OPT_fno_crash_diagnostics))
345 // Don't try to generate diagnostics for link jobs.
346 if (FailingCommand && FailingCommand->getCreator().isLinkJob())
349 // Print the version of the compiler.
350 PrintVersion(C, llvm::errs());
352 Diag(clang::diag::note_drv_command_failed_diag_msg)
353 << "PLEASE submit a bug report to " BUG_REPORT_URL " and include the "
354 "crash backtrace, preprocessed source, and associated run script.";
356 // Suppress driver output and emit preprocessor output to temp file.
358 CCGenDiagnostics = true;
359 C.getArgs().AddFlagArg(0, Opts->getOption(options::OPT_frewrite_includes));
361 // Save the original job command(s).
363 llvm::raw_string_ostream OS(Cmd);
365 C.PrintDiagnosticJob(OS, *FailingCommand);
367 // Crash triggered by FORCE_CLANG_DIAGNOSTICS_CRASH, which doesn't have an
368 // associated FailingCommand, so just pass all jobs.
369 C.PrintDiagnosticJob(OS, C.getJobs());
372 // Clear stale state and suppress tool output.
373 C.initCompilationForDiagnostics();
376 // Construct the list of inputs.
378 BuildInputs(C.getDefaultToolChain(), C.getArgs(), Inputs);
380 for (InputList::iterator it = Inputs.begin(), ie = Inputs.end(); it != ie;) {
381 bool IgnoreInput = false;
383 // Ignore input from stdin or any inputs that cannot be preprocessed.
384 if (!strcmp(it->second->getValue(), "-")) {
385 Diag(clang::diag::note_drv_command_failed_diag_msg)
386 << "Error generating preprocessed source(s) - ignoring input from stdin"
389 } else if (types::getPreprocessedType(it->first) == types::TY_INVALID) {
394 it = Inputs.erase(it);
401 // Don't attempt to generate preprocessed files if multiple -arch options are
402 // used, unless they're all duplicates.
403 llvm::StringSet<> ArchNames;
404 for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end();
407 if (A->getOption().matches(options::OPT_arch)) {
408 StringRef ArchName = A->getValue();
409 ArchNames.insert(ArchName);
412 if (ArchNames.size() > 1) {
413 Diag(clang::diag::note_drv_command_failed_diag_msg)
414 << "Error generating preprocessed source(s) - cannot generate "
415 "preprocessed source with multiple -arch options.";
419 if (Inputs.empty()) {
420 Diag(clang::diag::note_drv_command_failed_diag_msg)
421 << "Error generating preprocessed source(s) - no preprocessable inputs.";
425 // Construct the list of abstract actions to perform for this compilation. On
426 // Darwin OSes this uses the driver-driver and builds universal actions.
427 const ToolChain &TC = C.getDefaultToolChain();
428 if (TC.getTriple().isOSDarwin())
429 BuildUniversalActions(TC, C.getArgs(), Inputs, C.getActions());
431 BuildActions(TC, C.getArgs(), Inputs, C.getActions());
435 // If there were errors building the compilation, quit now.
436 if (Diags.hasErrorOccurred()) {
437 Diag(clang::diag::note_drv_command_failed_diag_msg)
438 << "Error generating preprocessed source(s).";
442 // Generate preprocessed output.
444 int Res = C.ExecuteJob(C.getJobs(), FailingCommand);
446 // If the command succeeded, we are done.
448 Diag(clang::diag::note_drv_command_failed_diag_msg)
449 << "\n********************\n\n"
450 "PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\n"
451 "Preprocessed source(s) and associated run script(s) are located at:";
452 ArgStringList Files = C.getTempFiles();
453 for (ArgStringList::const_iterator it = Files.begin(), ie = Files.end();
455 Diag(clang::diag::note_drv_command_failed_diag_msg) << *it;
458 std::string Script = StringRef(*it).rsplit('.').first;
460 llvm::raw_fd_ostream ScriptOS(Script.c_str(), Err,
461 llvm::raw_fd_ostream::F_Excl |
462 llvm::raw_fd_ostream::F_Binary);
464 Diag(clang::diag::note_drv_command_failed_diag_msg)
465 << "Error generating run script: " + Script + " " + Err;
467 // Append the new filename with correct preprocessed suffix.
469 I = Cmd.find("-main-file-name ");
470 assert (I != std::string::npos && "Expected to find -main-file-name");
472 E = Cmd.find(" ", I);
473 assert (E != std::string::npos && "-main-file-name missing argument?");
474 StringRef OldFilename = StringRef(Cmd).slice(I, E);
475 StringRef NewFilename = llvm::sys::path::filename(*it);
476 I = StringRef(Cmd).rfind(OldFilename);
477 E = I + OldFilename.size();
478 I = Cmd.rfind(" ", I) + 1;
479 Cmd.replace(I, E - I, NewFilename.data(), NewFilename.size());
481 Diag(clang::diag::note_drv_command_failed_diag_msg) << Script;
484 Diag(clang::diag::note_drv_command_failed_diag_msg)
485 << "\n\n********************";
487 // Failure, remove preprocessed files.
488 if (!C.getArgs().hasArg(options::OPT_save_temps))
489 C.CleanupFileList(C.getTempFiles(), true);
491 Diag(clang::diag::note_drv_command_failed_diag_msg)
492 << "Error generating preprocessed source(s).";
496 int Driver::ExecuteCompilation(const Compilation &C,
497 const Command *&FailingCommand) const {
498 // Just print if -### was present.
499 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
500 C.PrintJob(llvm::errs(), C.getJobs(), "\n", true);
504 // If there were errors building the compilation, quit now.
505 if (Diags.hasErrorOccurred())
508 int Res = C.ExecuteJob(C.getJobs(), FailingCommand);
510 // Remove temp files.
511 C.CleanupFileList(C.getTempFiles());
513 // If the command succeeded, we are done.
517 // Otherwise, remove result files as well.
518 if (!C.getArgs().hasArg(options::OPT_save_temps)) {
519 C.CleanupFileList(C.getResultFiles(), true);
521 // Failure result files are valid unless we crashed.
523 C.CleanupFileList(C.getFailureResultFiles(), true);
526 // Print extra information about abnormal failures, if possible.
528 // This is ad-hoc, but we don't want to be excessively noisy. If the result
529 // status was 1, assume the command failed normally. In particular, if it was
530 // the compiler then assume it gave a reasonable error code. Failures in other
531 // tools are less common, and they generally have worse diagnostics, so always
532 // print the diagnostic there.
533 const Tool &FailingTool = FailingCommand->getCreator();
535 if (!FailingCommand->getCreator().hasGoodDiagnostics() || Res != 1) {
536 // FIXME: See FIXME above regarding result code interpretation.
538 Diag(clang::diag::err_drv_command_signalled)
539 << FailingTool.getShortName();
541 Diag(clang::diag::err_drv_command_failed)
542 << FailingTool.getShortName() << Res;
548 void Driver::PrintOptions(const ArgList &Args) const {
550 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
551 it != ie; ++it, ++i) {
553 llvm::errs() << "Option " << i << " - "
554 << "Name: \"" << A->getOption().getPrefixedName() << "\", "
556 for (unsigned j = 0; j < A->getNumValues(); ++j) {
558 llvm::errs() << ", ";
559 llvm::errs() << '"' << A->getValue(j) << '"';
561 llvm::errs() << "}\n";
565 void Driver::PrintHelp(bool ShowHidden) const {
566 getOpts().PrintHelp(llvm::outs(), Name.c_str(), DriverTitle.c_str(),
568 /*Exclude*/options::NoDriverOption |
569 (ShowHidden ? 0 : options::HelpHidden));
572 void Driver::PrintVersion(const Compilation &C, raw_ostream &OS) const {
573 // FIXME: The following handlers should use a callback mechanism, we don't
574 // know what the client would like to do.
575 OS << getClangFullVersion() << '\n';
576 const ToolChain &TC = C.getDefaultToolChain();
577 OS << "Target: " << TC.getTripleString() << '\n';
579 // Print the threading model.
581 // FIXME: Implement correctly.
582 OS << "Thread model: " << "posix" << '\n';
585 /// PrintDiagnosticCategories - Implement the --print-diagnostic-categories
587 static void PrintDiagnosticCategories(raw_ostream &OS) {
588 // Skip the empty category.
589 for (unsigned i = 1, max = DiagnosticIDs::getNumberOfCategories();
591 OS << i << ',' << DiagnosticIDs::getCategoryNameFromID(i) << '\n';
594 bool Driver::HandleImmediateArgs(const Compilation &C) {
595 // The order these options are handled in gcc is all over the place, but we
596 // don't expect inconsistencies w.r.t. that to matter in practice.
598 if (C.getArgs().hasArg(options::OPT_dumpmachine)) {
599 llvm::outs() << C.getDefaultToolChain().getTripleString() << '\n';
603 if (C.getArgs().hasArg(options::OPT_dumpversion)) {
604 // Since -dumpversion is only implemented for pedantic GCC compatibility, we
605 // return an answer which matches our definition of __VERSION__.
607 // If we want to return a more correct answer some day, then we should
608 // introduce a non-pedantically GCC compatible mode to Clang in which we
609 // provide sensible definitions for -dumpversion, __VERSION__, etc.
610 llvm::outs() << "4.2.1\n";
614 if (C.getArgs().hasArg(options::OPT__print_diagnostic_categories)) {
615 PrintDiagnosticCategories(llvm::outs());
619 if (C.getArgs().hasArg(options::OPT_help) ||
620 C.getArgs().hasArg(options::OPT__help_hidden)) {
621 PrintHelp(C.getArgs().hasArg(options::OPT__help_hidden));
625 if (C.getArgs().hasArg(options::OPT__version)) {
626 // Follow gcc behavior and use stdout for --version and stderr for -v.
627 PrintVersion(C, llvm::outs());
631 if (C.getArgs().hasArg(options::OPT_v) ||
632 C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
633 PrintVersion(C, llvm::errs());
634 SuppressMissingInputWarning = true;
637 const ToolChain &TC = C.getDefaultToolChain();
638 if (C.getArgs().hasArg(options::OPT_print_search_dirs)) {
639 llvm::outs() << "programs: =";
640 for (ToolChain::path_list::const_iterator it = TC.getProgramPaths().begin(),
641 ie = TC.getProgramPaths().end(); it != ie; ++it) {
642 if (it != TC.getProgramPaths().begin())
646 llvm::outs() << "\n";
647 llvm::outs() << "libraries: =" << ResourceDir;
649 StringRef sysroot = C.getSysRoot();
651 for (ToolChain::path_list::const_iterator it = TC.getFilePaths().begin(),
652 ie = TC.getFilePaths().end(); it != ie; ++it) {
654 const char *path = it->c_str();
656 llvm::outs() << sysroot << path + 1;
658 llvm::outs() << path;
660 llvm::outs() << "\n";
664 // FIXME: The following handlers should use a callback mechanism, we don't
665 // know what the client would like to do.
666 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) {
667 llvm::outs() << GetFilePath(A->getValue(), TC) << "\n";
671 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_prog_name_EQ)) {
672 llvm::outs() << GetProgramPath(A->getValue(), TC) << "\n";
676 if (C.getArgs().hasArg(options::OPT_print_libgcc_file_name)) {
677 llvm::outs() << GetFilePath("libgcc.a", TC) << "\n";
681 if (C.getArgs().hasArg(options::OPT_print_multi_lib)) {
682 // FIXME: We need tool chain support for this.
683 llvm::outs() << ".;\n";
685 switch (C.getDefaultToolChain().getTriple().getArch()) {
689 case llvm::Triple::x86_64:
690 llvm::outs() << "x86_64;@m64" << "\n";
693 case llvm::Triple::ppc64:
694 llvm::outs() << "ppc64;@m64" << "\n";
700 // FIXME: What is the difference between print-multi-directory and
701 // print-multi-os-directory?
702 if (C.getArgs().hasArg(options::OPT_print_multi_directory) ||
703 C.getArgs().hasArg(options::OPT_print_multi_os_directory)) {
704 switch (C.getDefaultToolChain().getTriple().getArch()) {
706 case llvm::Triple::x86:
707 case llvm::Triple::ppc:
708 llvm::outs() << "." << "\n";
711 case llvm::Triple::x86_64:
712 llvm::outs() << "." << "\n";
715 case llvm::Triple::ppc64:
716 llvm::outs() << "ppc64" << "\n";
725 static unsigned PrintActions1(const Compilation &C, Action *A,
726 std::map<Action*, unsigned> &Ids) {
731 llvm::raw_string_ostream os(str);
733 os << Action::getClassName(A->getKind()) << ", ";
734 if (InputAction *IA = dyn_cast<InputAction>(A)) {
735 os << "\"" << IA->getInputArg().getValue() << "\"";
736 } else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) {
737 os << '"' << BIA->getArchName() << '"'
738 << ", {" << PrintActions1(C, *BIA->begin(), Ids) << "}";
741 for (Action::iterator it = A->begin(), ie = A->end(); it != ie;) {
742 os << PrintActions1(C, *it, Ids);
750 unsigned Id = Ids.size();
752 llvm::errs() << Id << ": " << os.str() << ", "
753 << types::getTypeName(A->getType()) << "\n";
758 void Driver::PrintActions(const Compilation &C) const {
759 std::map<Action*, unsigned> Ids;
760 for (ActionList::const_iterator it = C.getActions().begin(),
761 ie = C.getActions().end(); it != ie; ++it)
762 PrintActions1(C, *it, Ids);
765 /// \brief Check whether the given input tree contains any compilation or
766 /// assembly actions.
767 static bool ContainsCompileOrAssembleAction(const Action *A) {
768 if (isa<CompileJobAction>(A) || isa<AssembleJobAction>(A))
771 for (Action::const_iterator it = A->begin(), ie = A->end(); it != ie; ++it)
772 if (ContainsCompileOrAssembleAction(*it))
778 void Driver::BuildUniversalActions(const ToolChain &TC,
779 const DerivedArgList &Args,
780 const InputList &BAInputs,
781 ActionList &Actions) const {
782 llvm::PrettyStackTraceString CrashInfo("Building universal build actions");
783 // Collect the list of architectures. Duplicates are allowed, but should only
784 // be handled once (in the order seen).
785 llvm::StringSet<> ArchNames;
786 SmallVector<const char *, 4> Archs;
787 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
791 if (A->getOption().matches(options::OPT_arch)) {
792 // Validate the option here; we don't save the type here because its
793 // particular spelling may participate in other driver choices.
794 llvm::Triple::ArchType Arch =
795 tools::darwin::getArchTypeForDarwinArchName(A->getValue());
796 if (Arch == llvm::Triple::UnknownArch) {
797 Diag(clang::diag::err_drv_invalid_arch_name)
798 << A->getAsString(Args);
803 if (ArchNames.insert(A->getValue()))
804 Archs.push_back(A->getValue());
808 // When there is no explicit arch for this platform, make sure we still bind
809 // the architecture (to the default) so that -Xarch_ is handled correctly.
811 Archs.push_back(Args.MakeArgString(TC.getDefaultUniversalArchName()));
813 // FIXME: We killed off some others but these aren't yet detected in a
814 // functional manner. If we added information to jobs about which "auxiliary"
815 // files they wrote then we could detect the conflict these cause downstream.
816 if (Archs.size() > 1) {
817 // No recovery needed, the point of this is just to prevent
818 // overwriting the same files.
819 if (const Arg *A = Args.getLastArg(options::OPT_save_temps))
820 Diag(clang::diag::err_drv_invalid_opt_with_multiple_archs)
821 << A->getAsString(Args);
824 ActionList SingleActions;
825 BuildActions(TC, Args, BAInputs, SingleActions);
827 // Add in arch bindings for every top level action, as well as lipo and
828 // dsymutil steps if needed.
829 for (unsigned i = 0, e = SingleActions.size(); i != e; ++i) {
830 Action *Act = SingleActions[i];
832 // Make sure we can lipo this kind of output. If not (and it is an actual
833 // output) then we disallow, since we can't create an output file with the
834 // right name without overwriting it. We could remove this oddity by just
835 // changing the output names to include the arch, which would also fix
836 // -save-temps. Compatibility wins for now.
838 if (Archs.size() > 1 && !types::canLipoType(Act->getType()))
839 Diag(clang::diag::err_drv_invalid_output_with_multiple_archs)
840 << types::getTypeName(Act->getType());
843 for (unsigned i = 0, e = Archs.size(); i != e; ++i) {
844 Inputs.push_back(new BindArchAction(Act, Archs[i]));
846 Inputs.back()->setOwnsInputs(false);
849 // Lipo if necessary, we do it this way because we need to set the arch flag
850 // so that -Xarch_ gets overwritten.
851 if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing)
852 Actions.append(Inputs.begin(), Inputs.end());
854 Actions.push_back(new LipoJobAction(Inputs, Act->getType()));
856 // Handle debug info queries.
857 Arg *A = Args.getLastArg(options::OPT_g_Group);
858 if (A && !A->getOption().matches(options::OPT_g0) &&
859 !A->getOption().matches(options::OPT_gstabs) &&
860 ContainsCompileOrAssembleAction(Actions.back())) {
862 // Add a 'dsymutil' step if necessary, when debug info is enabled and we
863 // have a compile input. We need to run 'dsymutil' ourselves in such cases
864 // because the debug info will refer to a temporary object file which is
865 // will be removed at the end of the compilation process.
866 if (Act->getType() == types::TY_Image) {
868 Inputs.push_back(Actions.back());
870 Actions.push_back(new DsymutilJobAction(Inputs, types::TY_dSYM));
873 // Verify the output (debug information only) if we passed '-verify'.
874 if (Args.hasArg(options::OPT_verify)) {
875 ActionList VerifyInputs;
876 VerifyInputs.push_back(Actions.back());
878 Actions.push_back(new VerifyJobAction(VerifyInputs,
885 // Construct a the list of inputs and their types.
886 void Driver::BuildInputs(const ToolChain &TC, const DerivedArgList &Args,
887 InputList &Inputs) const {
888 // Track the current user specified (-x) input. We also explicitly track the
889 // argument used to set the type; we only want to claim the type when we
890 // actually use it, so we warn about unused -x arguments.
891 types::ID InputType = types::TY_Nothing;
892 Arg *InputTypeArg = 0;
894 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
898 if (A->getOption().getKind() == Option::InputClass) {
899 const char *Value = A->getValue();
900 types::ID Ty = types::TY_INVALID;
902 // Infer the input type if necessary.
903 if (InputType == types::TY_Nothing) {
904 // If there was an explicit arg for this, claim it.
906 InputTypeArg->claim();
908 // stdin must be handled specially.
909 if (memcmp(Value, "-", 2) == 0) {
910 // If running with -E, treat as a C input (this changes the builtin
911 // macros, for example). This may be overridden by -ObjC below.
913 // Otherwise emit an error but still use a valid type to avoid
914 // spurious errors (e.g., no inputs).
915 if (!Args.hasArgNoClaim(options::OPT_E) && !CCCIsCPP)
916 Diag(clang::diag::err_drv_unknown_stdin_type);
919 // Otherwise lookup by extension.
920 // Fallback is C if invoked as C preprocessor or Object otherwise.
921 // We use a host hook here because Darwin at least has its own
922 // idea of what .s is.
923 if (const char *Ext = strrchr(Value, '.'))
924 Ty = TC.LookupTypeForExtension(Ext + 1);
926 if (Ty == types::TY_INVALID) {
930 Ty = types::TY_Object;
933 // If the driver is invoked as C++ compiler (like clang++ or c++) it
934 // should autodetect some input files as C++ for g++ compatibility.
936 types::ID OldTy = Ty;
937 Ty = types::lookupCXXTypeForCType(Ty);
940 Diag(clang::diag::warn_drv_treating_input_as_cxx)
941 << getTypeName(OldTy) << getTypeName(Ty);
945 // -ObjC and -ObjC++ override the default language, but only for "source
946 // files". We just treat everything that isn't a linker input as a
949 // FIXME: Clean this up if we move the phase sequence into the type.
950 if (Ty != types::TY_Object) {
951 if (Args.hasArg(options::OPT_ObjC))
953 else if (Args.hasArg(options::OPT_ObjCXX))
954 Ty = types::TY_ObjCXX;
957 assert(InputTypeArg && "InputType set w/o InputTypeArg");
958 InputTypeArg->claim();
962 // Check that the file exists, if enabled.
963 if (CheckInputsExist && memcmp(Value, "-", 2) != 0) {
964 SmallString<64> Path(Value);
965 if (Arg *WorkDir = Args.getLastArg(options::OPT_working_directory)) {
966 if (!llvm::sys::path::is_absolute(Path.str())) {
967 SmallString<64> Directory(WorkDir->getValue());
968 llvm::sys::path::append(Directory, Value);
969 Path.assign(Directory);
974 if (llvm::sys::fs::exists(Path.c_str(), exists) || !exists)
975 Diag(clang::diag::err_drv_no_such_file) << Path.str();
977 Inputs.push_back(std::make_pair(Ty, A));
979 Inputs.push_back(std::make_pair(Ty, A));
981 } else if (A->getOption().hasFlag(options::LinkerInput)) {
982 // Just treat as object type, we could make a special type for this if
984 Inputs.push_back(std::make_pair(types::TY_Object, A));
986 } else if (A->getOption().matches(options::OPT_x)) {
988 InputType = types::lookupTypeForTypeSpecifier(A->getValue());
991 // Follow gcc behavior and treat as linker input for invalid -x
992 // options. Its not clear why we shouldn't just revert to unknown; but
993 // this isn't very important, we might as well be bug compatible.
995 Diag(clang::diag::err_drv_unknown_language) << A->getValue();
996 InputType = types::TY_Object;
1000 if (CCCIsCPP && Inputs.empty()) {
1001 // If called as standalone preprocessor, stdin is processed
1002 // if no other input is present.
1003 unsigned Index = Args.getBaseArgs().MakeIndex("-");
1004 Arg *A = Opts->ParseOneArg(Args, Index);
1006 Inputs.push_back(std::make_pair(types::TY_C, A));
1010 void Driver::BuildActions(const ToolChain &TC, const DerivedArgList &Args,
1011 const InputList &Inputs, ActionList &Actions) const {
1012 llvm::PrettyStackTraceString CrashInfo("Building compilation actions");
1014 if (!SuppressMissingInputWarning && Inputs.empty()) {
1015 Diag(clang::diag::err_drv_no_input_files);
1020 phases::ID FinalPhase = getFinalPhase(Args, &FinalPhaseArg);
1022 // Reject -Z* at the top level, these options should never have been exposed
1024 if (Arg *A = Args.getLastArg(options::OPT_Z_Joined))
1025 Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args);
1027 // Construct the actions to perform.
1028 ActionList LinkerInputs;
1029 unsigned NumSteps = 0;
1030 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1031 types::ID InputType = Inputs[i].first;
1032 const Arg *InputArg = Inputs[i].second;
1034 NumSteps = types::getNumCompilationPhases(InputType);
1035 assert(NumSteps && "Invalid number of steps!");
1037 // If the first step comes after the final phase we are doing as part of
1038 // this compilation, warn the user about it.
1039 phases::ID InitialPhase = types::getCompilationPhase(InputType, 0);
1040 if (InitialPhase > FinalPhase) {
1041 // Claim here to avoid the more general unused warning.
1044 // Suppress all unused style warnings with -Qunused-arguments
1045 if (Args.hasArg(options::OPT_Qunused_arguments))
1048 // Special case when final phase determined by binary name, rather than
1049 // by a command-line argument with a corresponding Arg.
1051 Diag(clang::diag::warn_drv_input_file_unused_by_cpp)
1052 << InputArg->getAsString(Args)
1053 << getPhaseName(InitialPhase);
1054 // Special case '-E' warning on a previously preprocessed file to make
1056 else if (InitialPhase == phases::Compile &&
1057 FinalPhase == phases::Preprocess &&
1058 getPreprocessedType(InputType) == types::TY_INVALID)
1059 Diag(clang::diag::warn_drv_preprocessed_input_file_unused)
1060 << InputArg->getAsString(Args)
1062 << FinalPhaseArg ? FinalPhaseArg->getOption().getName() : "";
1064 Diag(clang::diag::warn_drv_input_file_unused)
1065 << InputArg->getAsString(Args)
1066 << getPhaseName(InitialPhase)
1068 << FinalPhaseArg ? FinalPhaseArg->getOption().getName() : "";
1072 // Build the pipeline for this file.
1073 OwningPtr<Action> Current(new InputAction(*InputArg, InputType));
1074 for (unsigned i = 0; i != NumSteps; ++i) {
1075 phases::ID Phase = types::getCompilationPhase(InputType, i);
1077 // We are done if this step is past what the user requested.
1078 if (Phase > FinalPhase)
1081 // Queue linker inputs.
1082 if (Phase == phases::Link) {
1083 assert(i + 1 == NumSteps && "linking must be final compilation step.");
1084 LinkerInputs.push_back(Current.take());
1088 // Some types skip the assembler phase (e.g., llvm-bc), but we can't
1089 // encode this in the steps because the intermediate type depends on
1090 // arguments. Just special case here.
1091 if (Phase == phases::Assemble && Current->getType() != types::TY_PP_Asm)
1094 // Otherwise construct the appropriate action.
1095 Current.reset(ConstructPhaseAction(Args, Phase, Current.take()));
1096 if (Current->getType() == types::TY_Nothing)
1100 // If we ended with something, add to the output list.
1102 Actions.push_back(Current.take());
1105 // Add a link action if necessary.
1106 if (!LinkerInputs.empty())
1107 Actions.push_back(new LinkJobAction(LinkerInputs, types::TY_Image));
1109 // If we are linking, claim any options which are obviously only used for
1111 if (FinalPhase == phases::Link && (NumSteps == 1))
1112 Args.ClaimAllArgs(options::OPT_CompileOnly_Group);
1115 Action *Driver::ConstructPhaseAction(const ArgList &Args, phases::ID Phase,
1116 Action *Input) const {
1117 llvm::PrettyStackTraceString CrashInfo("Constructing phase actions");
1118 // Build the appropriate action.
1120 case phases::Link: llvm_unreachable("link action invalid here.");
1121 case phases::Preprocess: {
1123 // -{M, MM} alter the output type.
1124 if (Args.hasArg(options::OPT_M, options::OPT_MM)) {
1125 OutputTy = types::TY_Dependencies;
1127 OutputTy = Input->getType();
1128 if (!Args.hasFlag(options::OPT_frewrite_includes,
1129 options::OPT_fno_rewrite_includes, false))
1130 OutputTy = types::getPreprocessedType(OutputTy);
1131 assert(OutputTy != types::TY_INVALID &&
1132 "Cannot preprocess this input type!");
1134 return new PreprocessJobAction(Input, OutputTy);
1136 case phases::Precompile: {
1137 types::ID OutputTy = types::TY_PCH;
1138 if (Args.hasArg(options::OPT_fsyntax_only)) {
1139 // Syntax checks should not emit a PCH file
1140 OutputTy = types::TY_Nothing;
1142 return new PrecompileJobAction(Input, OutputTy);
1144 case phases::Compile: {
1145 if (Args.hasArg(options::OPT_fsyntax_only)) {
1146 return new CompileJobAction(Input, types::TY_Nothing);
1147 } else if (Args.hasArg(options::OPT_rewrite_objc)) {
1148 return new CompileJobAction(Input, types::TY_RewrittenObjC);
1149 } else if (Args.hasArg(options::OPT_rewrite_legacy_objc)) {
1150 return new CompileJobAction(Input, types::TY_RewrittenLegacyObjC);
1151 } else if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto)) {
1152 return new AnalyzeJobAction(Input, types::TY_Plist);
1153 } else if (Args.hasArg(options::OPT__migrate)) {
1154 return new MigrateJobAction(Input, types::TY_Remap);
1155 } else if (Args.hasArg(options::OPT_emit_ast)) {
1156 return new CompileJobAction(Input, types::TY_AST);
1157 } else if (IsUsingLTO(Args)) {
1159 Args.hasArg(options::OPT_S) ? types::TY_LTO_IR : types::TY_LTO_BC;
1160 return new CompileJobAction(Input, Output);
1162 return new CompileJobAction(Input, types::TY_PP_Asm);
1165 case phases::Assemble:
1166 return new AssembleJobAction(Input, types::TY_Object);
1169 llvm_unreachable("invalid phase in ConstructPhaseAction");
1172 bool Driver::IsUsingLTO(const ArgList &Args) const {
1173 // Check for -emit-llvm or -flto.
1174 if (Args.hasArg(options::OPT_emit_llvm) ||
1175 Args.hasFlag(options::OPT_flto, options::OPT_fno_lto, false))
1179 if (const Arg *A = Args.getLastArg(options::OPT_O_Group))
1180 return A->getOption().matches(options::OPT_O4);
1185 void Driver::BuildJobs(Compilation &C) const {
1186 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
1188 Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o);
1190 // It is an error to provide a -o option if we are making multiple output
1193 unsigned NumOutputs = 0;
1194 for (ActionList::const_iterator it = C.getActions().begin(),
1195 ie = C.getActions().end(); it != ie; ++it)
1196 if ((*it)->getType() != types::TY_Nothing)
1199 if (NumOutputs > 1) {
1200 Diag(clang::diag::err_drv_output_argument_with_multiple_files);
1205 for (ActionList::const_iterator it = C.getActions().begin(),
1206 ie = C.getActions().end(); it != ie; ++it) {
1209 // If we are linking an image for multiple archs then the linker wants
1210 // -arch_multiple and -final_output <final image name>. Unfortunately, this
1211 // doesn't fit in cleanly because we have to pass this information down.
1213 // FIXME: This is a hack; find a cleaner way to integrate this into the
1215 const char *LinkingOutput = 0;
1216 if (isa<LipoJobAction>(A)) {
1218 LinkingOutput = FinalOutput->getValue();
1220 LinkingOutput = DefaultImageName.c_str();
1224 BuildJobsForAction(C, A, &C.getDefaultToolChain(),
1226 /*AtTopLevel*/ true,
1227 /*LinkingOutput*/ LinkingOutput,
1231 // If the user passed -Qunused-arguments or there were errors, don't warn
1232 // about any unused arguments.
1233 if (Diags.hasErrorOccurred() ||
1234 C.getArgs().hasArg(options::OPT_Qunused_arguments))
1238 (void) C.getArgs().hasArg(options::OPT__HASH_HASH_HASH);
1240 for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end();
1244 // FIXME: It would be nice to be able to send the argument to the
1245 // DiagnosticsEngine, so that extra values, position, and so on could be
1247 if (!A->isClaimed()) {
1248 if (A->getOption().hasFlag(options::NoArgumentUnused))
1251 // Suppress the warning automatically if this is just a flag, and it is an
1252 // instance of an argument we already claimed.
1253 const Option &Opt = A->getOption();
1254 if (Opt.getKind() == Option::FlagClass) {
1255 bool DuplicateClaimed = false;
1257 for (arg_iterator it = C.getArgs().filtered_begin(&Opt),
1258 ie = C.getArgs().filtered_end(); it != ie; ++it) {
1259 if ((*it)->isClaimed()) {
1260 DuplicateClaimed = true;
1265 if (DuplicateClaimed)
1269 Diag(clang::diag::warn_drv_unused_argument)
1270 << A->getAsString(C.getArgs());
1275 static const Tool &SelectToolForJob(Compilation &C, const ToolChain *TC,
1276 const JobAction *JA,
1277 const ActionList *&Inputs) {
1278 const Tool *ToolForJob = 0;
1280 // See if we should look for a compiler with an integrated assembler. We match
1281 // bottom up, so what we are actually looking for is an assembler job with a
1284 if (C.getArgs().hasFlag(options::OPT_integrated_as,
1285 options::OPT_no_integrated_as,
1286 TC->IsIntegratedAssemblerDefault()) &&
1287 !C.getArgs().hasArg(options::OPT_save_temps) &&
1288 isa<AssembleJobAction>(JA) &&
1289 Inputs->size() == 1 && isa<CompileJobAction>(*Inputs->begin())) {
1290 const Tool &Compiler = TC->SelectTool(
1291 C, cast<JobAction>(**Inputs->begin()), (*Inputs)[0]->getInputs());
1292 if (Compiler.hasIntegratedAssembler()) {
1293 Inputs = &(*Inputs)[0]->getInputs();
1294 ToolForJob = &Compiler;
1298 // Otherwise use the tool for the current job.
1300 ToolForJob = &TC->SelectTool(C, *JA, *Inputs);
1302 // See if we should use an integrated preprocessor. We do so when we have
1303 // exactly one input, since this is the only use case we care about
1304 // (irrelevant since we don't support combine yet).
1305 if (Inputs->size() == 1 && isa<PreprocessJobAction>(*Inputs->begin()) &&
1306 !C.getArgs().hasArg(options::OPT_no_integrated_cpp) &&
1307 !C.getArgs().hasArg(options::OPT_traditional_cpp) &&
1308 !C.getArgs().hasArg(options::OPT_save_temps) &&
1309 !C.getArgs().hasArg(options::OPT_rewrite_objc) &&
1310 ToolForJob->hasIntegratedCPP())
1311 Inputs = &(*Inputs)[0]->getInputs();
1316 void Driver::BuildJobsForAction(Compilation &C,
1318 const ToolChain *TC,
1319 const char *BoundArch,
1321 const char *LinkingOutput,
1322 InputInfo &Result) const {
1323 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
1325 if (const InputAction *IA = dyn_cast<InputAction>(A)) {
1326 // FIXME: It would be nice to not claim this here; maybe the old scheme of
1327 // just using Args was better?
1328 const Arg &Input = IA->getInputArg();
1330 if (Input.getOption().matches(options::OPT_INPUT)) {
1331 const char *Name = Input.getValue();
1332 Result = InputInfo(Name, A->getType(), Name);
1334 Result = InputInfo(&Input, A->getType(), "");
1338 if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) {
1339 const ToolChain *TC;
1340 const char *ArchName = BAA->getArchName();
1343 TC = &getToolChain(C.getArgs(), ArchName);
1345 TC = &C.getDefaultToolChain();
1347 BuildJobsForAction(C, *BAA->begin(), TC, BAA->getArchName(),
1348 AtTopLevel, LinkingOutput, Result);
1352 const ActionList *Inputs = &A->getInputs();
1354 const JobAction *JA = cast<JobAction>(A);
1355 const Tool &T = SelectToolForJob(C, TC, JA, Inputs);
1357 // Only use pipes when there is exactly one input.
1358 InputInfoList InputInfos;
1359 for (ActionList::const_iterator it = Inputs->begin(), ie = Inputs->end();
1361 // Treat dsymutil sub-jobs as being at the top-level too, they shouldn't get
1362 // temporary output names.
1364 // FIXME: Clean this up.
1365 bool SubJobAtTopLevel = false;
1366 if (AtTopLevel && isa<DsymutilJobAction>(A))
1367 SubJobAtTopLevel = true;
1369 // Also treat verify sub-jobs as being at the top-level. They don't
1370 // produce any output and so don't need temporary output names.
1371 if (AtTopLevel && isa<VerifyJobAction>(A))
1372 SubJobAtTopLevel = true;
1375 BuildJobsForAction(C, *it, TC, BoundArch,
1376 SubJobAtTopLevel, LinkingOutput, II);
1377 InputInfos.push_back(II);
1380 // Always use the first input as the base input.
1381 const char *BaseInput = InputInfos[0].getBaseInput();
1383 // ... except dsymutil actions, which use their actual input as the base
1385 if (JA->getType() == types::TY_dSYM)
1386 BaseInput = InputInfos[0].getFilename();
1388 // Determine the place to write output to, if any.
1389 if (JA->getType() == types::TY_Nothing) {
1390 Result = InputInfo(A->getType(), BaseInput);
1392 Result = InputInfo(GetNamedOutputPath(C, *JA, BaseInput, AtTopLevel),
1393 A->getType(), BaseInput);
1396 if (CCCPrintBindings && !CCGenDiagnostics) {
1397 llvm::errs() << "# \"" << T.getToolChain().getTripleString() << '"'
1398 << " - \"" << T.getName() << "\", inputs: [";
1399 for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) {
1400 llvm::errs() << InputInfos[i].getAsString();
1402 llvm::errs() << ", ";
1404 llvm::errs() << "], output: " << Result.getAsString() << "\n";
1406 T.ConstructJob(C, *JA, Result, InputInfos,
1407 C.getArgsForToolChain(TC, BoundArch), LinkingOutput);
1411 const char *Driver::GetNamedOutputPath(Compilation &C,
1412 const JobAction &JA,
1413 const char *BaseInput,
1414 bool AtTopLevel) const {
1415 llvm::PrettyStackTraceString CrashInfo("Computing output path");
1416 // Output to a user requested destination?
1417 if (AtTopLevel && !isa<DsymutilJobAction>(JA) &&
1418 !isa<VerifyJobAction>(JA)) {
1419 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
1420 return C.addResultFile(FinalOutput->getValue());
1423 // Default to writing to stdout?
1424 if (AtTopLevel && isa<PreprocessJobAction>(JA) && !CCGenDiagnostics)
1427 // Output to a temporary file?
1428 if ((!AtTopLevel && !C.getArgs().hasArg(options::OPT_save_temps)) ||
1430 StringRef Name = llvm::sys::path::filename(BaseInput);
1431 std::pair<StringRef, StringRef> Split = Name.split('.');
1432 std::string TmpName =
1433 GetTemporaryPath(Split.first, types::getTypeTempSuffix(JA.getType()));
1434 return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str()));
1437 SmallString<128> BasePath(BaseInput);
1440 // Dsymutil actions should use the full path.
1441 if (isa<DsymutilJobAction>(JA) || isa<VerifyJobAction>(JA))
1442 BaseName = BasePath;
1444 BaseName = llvm::sys::path::filename(BasePath);
1446 // Determine what the derived output name should be.
1447 const char *NamedOutput;
1448 if (JA.getType() == types::TY_Image) {
1449 NamedOutput = DefaultImageName.c_str();
1451 const char *Suffix = types::getTypeTempSuffix(JA.getType());
1452 assert(Suffix && "All types used for output should have a suffix.");
1454 std::string::size_type End = std::string::npos;
1455 if (!types::appendSuffixForType(JA.getType()))
1456 End = BaseName.rfind('.');
1457 std::string Suffixed(BaseName.substr(0, End));
1460 NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str());
1463 // If we're saving temps and the temp file conflicts with the input file,
1464 // then avoid overwriting input file.
1465 if (!AtTopLevel && C.getArgs().hasArg(options::OPT_save_temps) &&
1466 NamedOutput == BaseName) {
1468 bool SameFile = false;
1469 SmallString<256> Result;
1470 llvm::sys::fs::current_path(Result);
1471 llvm::sys::path::append(Result, BaseName);
1472 llvm::sys::fs::equivalent(BaseInput, Result.c_str(), SameFile);
1473 // Must share the same path to conflict.
1475 StringRef Name = llvm::sys::path::filename(BaseInput);
1476 std::pair<StringRef, StringRef> Split = Name.split('.');
1477 std::string TmpName =
1478 GetTemporaryPath(Split.first, types::getTypeTempSuffix(JA.getType()));
1479 return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str()));
1483 // As an annoying special case, PCH generation doesn't strip the pathname.
1484 if (JA.getType() == types::TY_PCH) {
1485 llvm::sys::path::remove_filename(BasePath);
1486 if (BasePath.empty())
1487 BasePath = NamedOutput;
1489 llvm::sys::path::append(BasePath, NamedOutput);
1490 return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str()));
1492 return C.addResultFile(NamedOutput);
1496 std::string Driver::GetFilePath(const char *Name, const ToolChain &TC) const {
1497 // Respect a limited subset of the '-Bprefix' functionality in GCC by
1498 // attempting to use this prefix when looking for file paths.
1499 for (Driver::prefix_list::const_iterator it = PrefixDirs.begin(),
1500 ie = PrefixDirs.end(); it != ie; ++it) {
1501 std::string Dir(*it);
1505 Dir = SysRoot + Dir.substr(1);
1506 llvm::sys::Path P(Dir);
1507 P.appendComponent(Name);
1509 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists)
1513 llvm::sys::Path P(ResourceDir);
1514 P.appendComponent(Name);
1516 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists)
1519 const ToolChain::path_list &List = TC.getFilePaths();
1520 for (ToolChain::path_list::const_iterator
1521 it = List.begin(), ie = List.end(); it != ie; ++it) {
1522 std::string Dir(*it);
1526 Dir = SysRoot + Dir.substr(1);
1527 llvm::sys::Path P(Dir);
1528 P.appendComponent(Name);
1530 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists)
1537 std::string Driver::GetProgramPath(const char *Name,
1538 const ToolChain &TC) const {
1539 // FIXME: Needs a better variable than DefaultTargetTriple
1540 std::string TargetSpecificExecutable(DefaultTargetTriple + "-" + Name);
1541 // Respect a limited subset of the '-Bprefix' functionality in GCC by
1542 // attempting to use this prefix when looking for program paths.
1543 for (Driver::prefix_list::const_iterator it = PrefixDirs.begin(),
1544 ie = PrefixDirs.end(); it != ie; ++it) {
1546 if (!llvm::sys::fs::is_directory(*it, IsDirectory) && IsDirectory) {
1547 llvm::sys::Path P(*it);
1548 P.appendComponent(TargetSpecificExecutable);
1549 if (P.canExecute()) return P.str();
1551 P.appendComponent(Name);
1552 if (P.canExecute()) return P.str();
1554 llvm::sys::Path P(*it + Name);
1555 if (P.canExecute()) return P.str();
1559 const ToolChain::path_list &List = TC.getProgramPaths();
1560 for (ToolChain::path_list::const_iterator
1561 it = List.begin(), ie = List.end(); it != ie; ++it) {
1562 llvm::sys::Path P(*it);
1563 P.appendComponent(TargetSpecificExecutable);
1564 if (P.canExecute()) return P.str();
1566 P.appendComponent(Name);
1567 if (P.canExecute()) return P.str();
1570 // If all else failed, search the path.
1572 P(llvm::sys::Program::FindProgramByName(TargetSpecificExecutable));
1576 P = llvm::sys::Path(llvm::sys::Program::FindProgramByName(Name));
1583 std::string Driver::GetTemporaryPath(StringRef Prefix, const char *Suffix)
1585 // FIXME: This is lame; sys::Path should provide this function (in particular,
1586 // it should know how to find the temporary files dir).
1588 const char *TmpDir = ::getenv("TMPDIR");
1590 TmpDir = ::getenv("TEMP");
1592 TmpDir = ::getenv("TMP");
1595 llvm::sys::Path P(TmpDir);
1596 P.appendComponent(Prefix);
1597 if (P.makeUnique(false, &Error)) {
1598 Diag(clang::diag::err_unable_to_make_temp) << Error;
1602 // FIXME: Grumble, makeUnique sometimes leaves the file around!? PR3837.
1603 P.eraseFromDisk(false, 0);
1606 P.appendSuffix(Suffix);
1610 /// \brief Compute target triple from args.
1612 /// This routine provides the logic to compute a target triple from various
1613 /// args passed to the driver and the default triple string.
1614 static llvm::Triple computeTargetTriple(StringRef DefaultTargetTriple,
1615 const ArgList &Args,
1616 StringRef DarwinArchName) {
1617 // FIXME: Already done in Compilation *Driver::BuildCompilation
1618 if (const Arg *A = Args.getLastArg(options::OPT_target))
1619 DefaultTargetTriple = A->getValue();
1621 llvm::Triple Target(llvm::Triple::normalize(DefaultTargetTriple));
1623 // Handle Darwin-specific options available here.
1624 if (Target.isOSDarwin()) {
1625 // If an explict Darwin arch name is given, that trumps all.
1626 if (!DarwinArchName.empty()) {
1628 tools::darwin::getArchTypeForDarwinArchName(DarwinArchName));
1632 // Handle the Darwin '-arch' flag.
1633 if (Arg *A = Args.getLastArg(options::OPT_arch)) {
1634 llvm::Triple::ArchType DarwinArch
1635 = tools::darwin::getArchTypeForDarwinArchName(A->getValue());
1636 if (DarwinArch != llvm::Triple::UnknownArch)
1637 Target.setArch(DarwinArch);
1641 // Skip further flag support on OSes which don't support '-m32' or '-m64'.
1642 if (Target.getArchName() == "tce" ||
1643 Target.getOS() == llvm::Triple::AuroraUX ||
1644 Target.getOS() == llvm::Triple::Minix)
1647 // Handle pseudo-target flags '-m32' and '-m64'.
1648 // FIXME: Should this information be in llvm::Triple?
1649 if (Arg *A = Args.getLastArg(options::OPT_m32, options::OPT_m64)) {
1650 if (A->getOption().matches(options::OPT_m32)) {
1651 if (Target.getArch() == llvm::Triple::x86_64)
1652 Target.setArch(llvm::Triple::x86);
1653 if (Target.getArch() == llvm::Triple::ppc64)
1654 Target.setArch(llvm::Triple::ppc);
1656 if (Target.getArch() == llvm::Triple::x86)
1657 Target.setArch(llvm::Triple::x86_64);
1658 if (Target.getArch() == llvm::Triple::ppc)
1659 Target.setArch(llvm::Triple::ppc64);
1666 const ToolChain &Driver::getToolChain(const ArgList &Args,
1667 StringRef DarwinArchName) const {
1668 llvm::Triple Target = computeTargetTriple(DefaultTargetTriple, Args,
1671 ToolChain *&TC = ToolChains[Target.str()];
1673 switch (Target.getOS()) {
1674 case llvm::Triple::AuroraUX:
1675 TC = new toolchains::AuroraUX(*this, Target, Args);
1677 case llvm::Triple::Darwin:
1678 case llvm::Triple::MacOSX:
1679 case llvm::Triple::IOS:
1680 if (Target.getArch() == llvm::Triple::x86 ||
1681 Target.getArch() == llvm::Triple::x86_64 ||
1682 Target.getArch() == llvm::Triple::arm ||
1683 Target.getArch() == llvm::Triple::thumb)
1684 TC = new toolchains::DarwinClang(*this, Target);
1686 TC = new toolchains::Darwin_Generic_GCC(*this, Target, Args);
1688 case llvm::Triple::DragonFly:
1689 TC = new toolchains::DragonFly(*this, Target, Args);
1691 case llvm::Triple::OpenBSD:
1692 TC = new toolchains::OpenBSD(*this, Target, Args);
1694 case llvm::Triple::Bitrig:
1695 TC = new toolchains::Bitrig(*this, Target, Args);
1697 case llvm::Triple::NetBSD:
1698 TC = new toolchains::NetBSD(*this, Target, Args);
1700 case llvm::Triple::FreeBSD:
1701 TC = new toolchains::FreeBSD(*this, Target, Args);
1703 case llvm::Triple::Minix:
1704 TC = new toolchains::Minix(*this, Target, Args);
1706 case llvm::Triple::Linux:
1707 if (Target.getArch() == llvm::Triple::hexagon)
1708 TC = new toolchains::Hexagon_TC(*this, Target);
1710 TC = new toolchains::Linux(*this, Target, Args);
1712 case llvm::Triple::Solaris:
1713 TC = new toolchains::Solaris(*this, Target, Args);
1715 case llvm::Triple::Win32:
1716 TC = new toolchains::Windows(*this, Target);
1718 case llvm::Triple::MinGW32:
1719 // FIXME: We need a MinGW toolchain. Fallthrough for now.
1721 // TCE is an OSless target
1722 if (Target.getArchName() == "tce") {
1723 TC = new toolchains::TCEToolChain(*this, Target);
1727 TC = new toolchains::Generic_GCC(*this, Target, Args);
1734 bool Driver::ShouldUseClangCompiler(const Compilation &C, const JobAction &JA,
1735 const llvm::Triple &Triple) const {
1736 // Check if user requested no clang, or clang doesn't understand this type (we
1737 // only handle single inputs for now).
1738 if (JA.size() != 1 ||
1739 !types::isAcceptedByClang((*JA.begin())->getType()))
1742 // Otherwise make sure this is an action clang understands.
1743 if (!isa<PreprocessJobAction>(JA) && !isa<PrecompileJobAction>(JA) &&
1744 !isa<CompileJobAction>(JA))
1750 /// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the
1751 /// grouped values as integers. Numbers which are not provided are set to 0.
1753 /// \return True if the entire string was parsed (9.2), or all groups were
1754 /// parsed (10.3.5extrastuff).
1755 bool Driver::GetReleaseVersion(const char *Str, unsigned &Major,
1756 unsigned &Minor, unsigned &Micro,
1760 Major = Minor = Micro = 0;
1765 Major = (unsigned) strtol(Str, &End, 10);
1766 if (*Str != '\0' && *End == '\0')
1772 Minor = (unsigned) strtol(Str, &End, 10);
1773 if (*Str != '\0' && *End == '\0')
1779 Micro = (unsigned) strtol(Str, &End, 10);
1780 if (*Str != '\0' && *End == '\0')