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"
11 #include "InputInfo.h"
12 #include "ToolChains.h"
13 #include "clang/Basic/Version.h"
14 #include "clang/Driver/Action.h"
15 #include "clang/Driver/Arg.h"
16 #include "clang/Driver/ArgList.h"
17 #include "clang/Driver/Compilation.h"
18 #include "clang/Driver/DriverDiagnostic.h"
19 #include "clang/Driver/Job.h"
20 #include "clang/Driver/OptTable.h"
21 #include "clang/Driver/Option.h"
22 #include "clang/Driver/Options.h"
23 #include "clang/Driver/Tool.h"
24 #include "clang/Driver/ToolChain.h"
25 #include "llvm/ADT/ArrayRef.h"
26 #include "llvm/ADT/OwningPtr.h"
27 #include "llvm/ADT/StringSet.h"
28 #include "llvm/Support/Debug.h"
29 #include "llvm/Support/ErrorHandling.h"
30 #include "llvm/Support/FileSystem.h"
31 #include "llvm/Support/Path.h"
32 #include "llvm/Support/PrettyStackTrace.h"
33 #include "llvm/Support/Program.h"
34 #include "llvm/Support/raw_ostream.h"
37 // FIXME: It would prevent us from including llvm-config.h
38 // if config.h were included before system_error.h.
39 #include "clang/Config/config.h"
41 using namespace clang::driver;
42 using namespace clang;
44 Driver::Driver(StringRef ClangExecutable,
45 StringRef DefaultTargetTriple,
46 StringRef DefaultImageName,
47 DiagnosticsEngine &Diags)
48 : Opts(createDriverOptTable()), Diags(Diags),
49 ClangExecutable(ClangExecutable), SysRoot(DEFAULT_SYSROOT),
50 UseStdLib(true), DefaultTargetTriple(DefaultTargetTriple),
51 DefaultImageName(DefaultImageName),
52 DriverTitle("clang LLVM compiler"),
53 CCPrintOptionsFilename(0), CCPrintHeadersFilename(0),
54 CCLogDiagnosticsFilename(0), CCCIsCXX(false),
55 CCCIsCPP(false),CCCEcho(false), CCCPrintBindings(false),
56 CCPrintOptions(false), CCPrintHeaders(false), CCLogDiagnostics(false),
57 CCGenDiagnostics(false), CCCGenericGCCName(""), CheckInputsExist(true),
58 CCCUsePCH(true), SuppressMissingInputWarning(false) {
60 Name = llvm::sys::path::stem(ClangExecutable);
61 Dir = llvm::sys::path::parent_path(ClangExecutable);
63 // Compute the path to the resource directory.
64 StringRef ClangResourceDir(CLANG_RESOURCE_DIR);
65 SmallString<128> P(Dir);
66 if (ClangResourceDir != "")
67 llvm::sys::path::append(P, ClangResourceDir);
69 llvm::sys::path::append(P, "..", "lib", "clang", CLANG_VERSION_STRING);
70 ResourceDir = P.str();
76 for (llvm::StringMap<ToolChain *>::iterator I = ToolChains.begin(),
82 InputArgList *Driver::ParseArgStrings(ArrayRef<const char *> ArgList) {
83 llvm::PrettyStackTraceString CrashInfo("Command line argument parsing");
84 unsigned MissingArgIndex, MissingArgCount;
85 InputArgList *Args = getOpts().ParseArgs(ArgList.begin(), ArgList.end(),
86 MissingArgIndex, MissingArgCount);
88 // Check for missing argument error.
90 Diag(clang::diag::err_drv_missing_argument)
91 << Args->getArgString(MissingArgIndex) << MissingArgCount;
93 // Check for unsupported options.
94 for (ArgList::const_iterator it = Args->begin(), ie = Args->end();
97 if (A->getOption().hasFlag(options::Unsupported)) {
98 Diag(clang::diag::err_drv_unsupported_opt) << A->getAsString(*Args);
102 // Warn about -mcpu= without an argument.
103 if (A->getOption().matches(options::OPT_mcpu_EQ) &&
104 A->containsValue("")) {
105 Diag(clang::diag::warn_drv_empty_joined_argument) <<
106 A->getAsString(*Args);
113 // Determine which compilation mode we are in. We look for options which
114 // affect the phase, starting with the earliest phases, and record which
115 // option we used to determine the final phase.
116 phases::ID Driver::getFinalPhase(const DerivedArgList &DAL, Arg **FinalPhaseArg)
119 phases::ID FinalPhase;
121 // -{E,M,MM} only run the preprocessor.
123 (PhaseArg = DAL.getLastArg(options::OPT_E)) ||
124 (PhaseArg = DAL.getLastArg(options::OPT_M, options::OPT_MM))) {
125 FinalPhase = phases::Preprocess;
127 // -{fsyntax-only,-analyze,emit-ast,S} only run up to the compiler.
128 } else if ((PhaseArg = DAL.getLastArg(options::OPT_fsyntax_only)) ||
129 (PhaseArg = DAL.getLastArg(options::OPT_module_file_info)) ||
130 (PhaseArg = DAL.getLastArg(options::OPT_rewrite_objc)) ||
131 (PhaseArg = DAL.getLastArg(options::OPT_rewrite_legacy_objc)) ||
132 (PhaseArg = DAL.getLastArg(options::OPT__migrate)) ||
133 (PhaseArg = DAL.getLastArg(options::OPT__analyze,
134 options::OPT__analyze_auto)) ||
135 (PhaseArg = DAL.getLastArg(options::OPT_emit_ast)) ||
136 (PhaseArg = DAL.getLastArg(options::OPT_S))) {
137 FinalPhase = phases::Compile;
139 // -c only runs up to the assembler.
140 } else if ((PhaseArg = DAL.getLastArg(options::OPT_c))) {
141 FinalPhase = phases::Assemble;
143 // Otherwise do everything.
145 FinalPhase = phases::Link;
148 *FinalPhaseArg = PhaseArg;
153 DerivedArgList *Driver::TranslateInputArgs(const InputArgList &Args) const {
154 DerivedArgList *DAL = new DerivedArgList(Args);
156 bool HasNostdlib = Args.hasArg(options::OPT_nostdlib);
157 for (ArgList::const_iterator it = Args.begin(),
158 ie = Args.end(); it != ie; ++it) {
161 // Unfortunately, we have to parse some forwarding options (-Xassembler,
162 // -Xlinker, -Xpreprocessor) because we either integrate their functionality
163 // (assembler and preprocessor), or bypass a previous driver ('collect2').
165 // Rewrite linker options, to replace --no-demangle with a custom internal
167 if ((A->getOption().matches(options::OPT_Wl_COMMA) ||
168 A->getOption().matches(options::OPT_Xlinker)) &&
169 A->containsValue("--no-demangle")) {
170 // Add the rewritten no-demangle argument.
171 DAL->AddFlagArg(A, Opts->getOption(options::OPT_Z_Xlinker__no_demangle));
173 // Add the remaining values as Xlinker arguments.
174 for (unsigned i = 0, e = A->getNumValues(); i != e; ++i)
175 if (StringRef(A->getValue(i)) != "--no-demangle")
176 DAL->AddSeparateArg(A, Opts->getOption(options::OPT_Xlinker),
182 // Rewrite preprocessor options, to replace -Wp,-MD,FOO which is used by
183 // some build systems. We don't try to be complete here because we don't
184 // care to encourage this usage model.
185 if (A->getOption().matches(options::OPT_Wp_COMMA) &&
186 (A->getValue(0) == StringRef("-MD") ||
187 A->getValue(0) == StringRef("-MMD"))) {
188 // Rewrite to -MD/-MMD along with -MF.
189 if (A->getValue(0) == StringRef("-MD"))
190 DAL->AddFlagArg(A, Opts->getOption(options::OPT_MD));
192 DAL->AddFlagArg(A, Opts->getOption(options::OPT_MMD));
193 if (A->getNumValues() == 2)
194 DAL->AddSeparateArg(A, Opts->getOption(options::OPT_MF),
199 // Rewrite reserved library names.
200 if (A->getOption().matches(options::OPT_l)) {
201 StringRef Value = A->getValue();
203 // Rewrite unless -nostdlib is present.
204 if (!HasNostdlib && Value == "stdc++") {
205 DAL->AddFlagArg(A, Opts->getOption(
206 options::OPT_Z_reserved_lib_stdcxx));
210 // Rewrite unconditionally.
211 if (Value == "cc_kext") {
212 DAL->AddFlagArg(A, Opts->getOption(
213 options::OPT_Z_reserved_lib_cckext));
221 // Add a default value of -mlinker-version=, if one was given and the user
222 // didn't specify one.
223 #if defined(HOST_LINK_VERSION)
224 if (!Args.hasArg(options::OPT_mlinker_version_EQ)) {
225 DAL->AddJoinedArg(0, Opts->getOption(options::OPT_mlinker_version_EQ),
227 DAL->getLastArg(options::OPT_mlinker_version_EQ)->claim();
234 Compilation *Driver::BuildCompilation(ArrayRef<const char *> ArgList) {
235 llvm::PrettyStackTraceString CrashInfo("Compilation construction");
237 // FIXME: Handle environment options which affect driver behavior, somewhere
238 // (client?). GCC_EXEC_PREFIX, LPATH, CC_PRINT_OPTIONS.
240 if (char *env = ::getenv("COMPILER_PATH")) {
241 StringRef CompilerPath = env;
242 while (!CompilerPath.empty()) {
243 std::pair<StringRef, StringRef> Split
244 = CompilerPath.split(llvm::sys::PathSeparator);
245 PrefixDirs.push_back(Split.first);
246 CompilerPath = Split.second;
250 // FIXME: What are we going to do with -V and -b?
252 // FIXME: This stuff needs to go into the Compilation, not the driver.
253 bool CCCPrintOptions, CCCPrintActions;
255 InputArgList *Args = ParseArgStrings(ArgList.slice(1));
257 // -no-canonical-prefixes is used very early in main.
258 Args->ClaimAllArgs(options::OPT_no_canonical_prefixes);
261 Args->ClaimAllArgs(options::OPT_pipe);
263 // Extract -ccc args.
265 // FIXME: We need to figure out where this behavior should live. Most of it
266 // should be outside in the client; the parts that aren't should have proper
267 // options, either by introducing new ones or by overloading gcc ones like -V
269 CCCPrintOptions = Args->hasArg(options::OPT_ccc_print_options);
270 CCCPrintActions = Args->hasArg(options::OPT_ccc_print_phases);
271 CCCPrintBindings = Args->hasArg(options::OPT_ccc_print_bindings);
272 CCCIsCXX = Args->hasArg(options::OPT_ccc_cxx) || CCCIsCXX;
273 CCCEcho = Args->hasArg(options::OPT_ccc_echo);
274 if (const Arg *A = Args->getLastArg(options::OPT_ccc_gcc_name))
275 CCCGenericGCCName = A->getValue();
276 CCCUsePCH = Args->hasFlag(options::OPT_ccc_pch_is_pch,
277 options::OPT_ccc_pch_is_pth);
278 // FIXME: DefaultTargetTriple is used by the target-prefixed calls to as/ld
279 // and getToolChain is const.
280 if (const Arg *A = Args->getLastArg(options::OPT_target))
281 DefaultTargetTriple = A->getValue();
282 if (const Arg *A = Args->getLastArg(options::OPT_ccc_install_dir))
283 Dir = InstalledDir = A->getValue();
284 for (arg_iterator it = Args->filtered_begin(options::OPT_B),
285 ie = Args->filtered_end(); it != ie; ++it) {
288 PrefixDirs.push_back(A->getValue(0));
290 if (const Arg *A = Args->getLastArg(options::OPT__sysroot_EQ))
291 SysRoot = A->getValue();
292 if (Args->hasArg(options::OPT_nostdlib))
295 if (const Arg *A = Args->getLastArg(options::OPT_resource_dir))
296 ResourceDir = A->getValue();
298 // Perform the default argument translations.
299 DerivedArgList *TranslatedArgs = TranslateInputArgs(*Args);
301 // Owned by the host.
302 const ToolChain &TC = getToolChain(*Args);
304 // The compilation takes ownership of Args.
305 Compilation *C = new Compilation(*this, TC, Args, TranslatedArgs);
307 // FIXME: This behavior shouldn't be here.
308 if (CCCPrintOptions) {
309 PrintOptions(C->getInputArgs());
313 if (!HandleImmediateArgs(*C))
316 // Construct the list of inputs.
318 BuildInputs(C->getDefaultToolChain(), C->getArgs(), Inputs);
320 // Construct the list of abstract actions to perform for this compilation. On
321 // Darwin target OSes this uses the driver-driver and universal actions.
322 if (TC.getTriple().isOSDarwin())
323 BuildUniversalActions(C->getDefaultToolChain(), C->getArgs(),
324 Inputs, C->getActions());
326 BuildActions(C->getDefaultToolChain(), C->getArgs(), Inputs,
329 if (CCCPrintActions) {
339 // When clang crashes, produce diagnostic information including the fully
340 // preprocessed source file(s). Request that the developer attach the
341 // diagnostic information to a bug report.
342 void Driver::generateCompilationDiagnostics(Compilation &C,
343 const Command *FailingCommand) {
344 if (C.getArgs().hasArg(options::OPT_fno_crash_diagnostics))
347 // Don't try to generate diagnostics for link or dsymutil jobs.
348 if (FailingCommand && (FailingCommand->getCreator().isLinkJob() ||
349 FailingCommand->getCreator().isDsymutilJob()))
352 // Print the version of the compiler.
353 PrintVersion(C, llvm::errs());
355 Diag(clang::diag::note_drv_command_failed_diag_msg)
356 << "PLEASE submit a bug report to " BUG_REPORT_URL " and include the "
357 "crash backtrace, preprocessed source, and associated run script.";
359 // Suppress driver output and emit preprocessor output to temp file.
361 CCGenDiagnostics = true;
362 C.getArgs().AddFlagArg(0, Opts->getOption(options::OPT_frewrite_includes));
364 // Save the original job command(s).
366 llvm::raw_string_ostream OS(Cmd);
368 C.PrintDiagnosticJob(OS, *FailingCommand);
370 // Crash triggered by FORCE_CLANG_DIAGNOSTICS_CRASH, which doesn't have an
371 // associated FailingCommand, so just pass all jobs.
372 C.PrintDiagnosticJob(OS, C.getJobs());
375 // Keep track of whether we produce any errors while trying to produce
376 // preprocessed sources.
377 DiagnosticErrorTrap Trap(Diags);
379 // Suppress tool output.
380 C.initCompilationForDiagnostics();
382 // Construct the list of inputs.
384 BuildInputs(C.getDefaultToolChain(), C.getArgs(), Inputs);
386 for (InputList::iterator it = Inputs.begin(), ie = Inputs.end(); it != ie;) {
387 bool IgnoreInput = false;
389 // Ignore input from stdin or any inputs that cannot be preprocessed.
390 if (!strcmp(it->second->getValue(), "-")) {
391 Diag(clang::diag::note_drv_command_failed_diag_msg)
392 << "Error generating preprocessed source(s) - ignoring input from stdin"
395 } else if (types::getPreprocessedType(it->first) == types::TY_INVALID) {
400 it = Inputs.erase(it);
407 if (Inputs.empty()) {
408 Diag(clang::diag::note_drv_command_failed_diag_msg)
409 << "Error generating preprocessed source(s) - no preprocessable inputs.";
413 // Don't attempt to generate preprocessed files if multiple -arch options are
414 // used, unless they're all duplicates.
415 llvm::StringSet<> ArchNames;
416 for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end();
419 if (A->getOption().matches(options::OPT_arch)) {
420 StringRef ArchName = A->getValue();
421 ArchNames.insert(ArchName);
424 if (ArchNames.size() > 1) {
425 Diag(clang::diag::note_drv_command_failed_diag_msg)
426 << "Error generating preprocessed source(s) - cannot generate "
427 "preprocessed source with multiple -arch options.";
431 // Construct the list of abstract actions to perform for this compilation. On
432 // Darwin OSes this uses the driver-driver and builds universal actions.
433 const ToolChain &TC = C.getDefaultToolChain();
434 if (TC.getTriple().isOSDarwin())
435 BuildUniversalActions(TC, C.getArgs(), Inputs, C.getActions());
437 BuildActions(TC, C.getArgs(), Inputs, C.getActions());
441 // If there were errors building the compilation, quit now.
442 if (Trap.hasErrorOccurred()) {
443 Diag(clang::diag::note_drv_command_failed_diag_msg)
444 << "Error generating preprocessed source(s).";
448 // Generate preprocessed output.
449 SmallVector<std::pair<int, const Command *>, 4> FailingCommands;
450 C.ExecuteJob(C.getJobs(), FailingCommands);
452 // If the command succeeded, we are done.
453 if (FailingCommands.empty()) {
454 Diag(clang::diag::note_drv_command_failed_diag_msg)
455 << "\n********************\n\n"
456 "PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:\n"
457 "Preprocessed source(s) and associated run script(s) are located at:";
458 ArgStringList Files = C.getTempFiles();
459 for (ArgStringList::const_iterator it = Files.begin(), ie = Files.end();
461 Diag(clang::diag::note_drv_command_failed_diag_msg) << *it;
464 std::string Script = StringRef(*it).rsplit('.').first;
466 llvm::raw_fd_ostream ScriptOS(Script.c_str(), Err,
467 llvm::raw_fd_ostream::F_Excl |
468 llvm::raw_fd_ostream::F_Binary);
470 Diag(clang::diag::note_drv_command_failed_diag_msg)
471 << "Error generating run script: " + Script + " " + Err;
473 // Append the new filename with correct preprocessed suffix.
475 I = Cmd.find("-main-file-name ");
476 assert (I != std::string::npos && "Expected to find -main-file-name");
478 E = Cmd.find(" ", I);
479 assert (E != std::string::npos && "-main-file-name missing argument?");
480 StringRef OldFilename = StringRef(Cmd).slice(I, E);
481 StringRef NewFilename = llvm::sys::path::filename(*it);
482 I = StringRef(Cmd).rfind(OldFilename);
483 E = I + OldFilename.size();
484 I = Cmd.rfind(" ", I) + 1;
485 Cmd.replace(I, E - I, NewFilename.data(), NewFilename.size());
487 Diag(clang::diag::note_drv_command_failed_diag_msg) << Script;
490 Diag(clang::diag::note_drv_command_failed_diag_msg)
491 << "\n\n********************";
493 // Failure, remove preprocessed files.
494 if (!C.getArgs().hasArg(options::OPT_save_temps))
495 C.CleanupFileList(C.getTempFiles(), true);
497 Diag(clang::diag::note_drv_command_failed_diag_msg)
498 << "Error generating preprocessed source(s).";
502 int Driver::ExecuteCompilation(const Compilation &C,
503 SmallVectorImpl< std::pair<int, const Command *> > &FailingCommands) const {
504 // Just print if -### was present.
505 if (C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
506 C.PrintJob(llvm::errs(), C.getJobs(), "\n", true);
510 // If there were errors building the compilation, quit now.
511 if (Diags.hasErrorOccurred())
514 C.ExecuteJob(C.getJobs(), FailingCommands);
516 // Remove temp files.
517 C.CleanupFileList(C.getTempFiles());
519 // If the command succeeded, we are done.
520 if (FailingCommands.empty())
523 // Otherwise, remove result files and print extra information about abnormal
525 for (SmallVectorImpl< std::pair<int, const Command *> >::iterator it =
526 FailingCommands.begin(), ie = FailingCommands.end(); it != ie; ++it) {
528 const Command *FailingCommand = it->second;
530 // Remove result files if we're not saving temps.
531 if (!C.getArgs().hasArg(options::OPT_save_temps)) {
532 const JobAction *JA = cast<JobAction>(&FailingCommand->getSource());
533 C.CleanupFileMap(C.getResultFiles(), JA, true);
535 // Failure result files are valid unless we crashed.
537 C.CleanupFileMap(C.getFailureResultFiles(), JA, true);
540 // Print extra information about abnormal failures, if possible.
542 // This is ad-hoc, but we don't want to be excessively noisy. If the result
543 // status was 1, assume the command failed normally. In particular, if it
544 // was the compiler then assume it gave a reasonable error code. Failures
545 // in other tools are less common, and they generally have worse
546 // diagnostics, so always print the diagnostic there.
547 const Tool &FailingTool = FailingCommand->getCreator();
549 if (!FailingCommand->getCreator().hasGoodDiagnostics() || Res != 1) {
550 // FIXME: See FIXME above regarding result code interpretation.
552 Diag(clang::diag::err_drv_command_signalled)
553 << FailingTool.getShortName();
555 Diag(clang::diag::err_drv_command_failed)
556 << FailingTool.getShortName() << Res;
562 void Driver::PrintOptions(const ArgList &Args) const {
564 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
565 it != ie; ++it, ++i) {
567 llvm::errs() << "Option " << i << " - "
568 << "Name: \"" << A->getOption().getPrefixedName() << "\", "
570 for (unsigned j = 0; j < A->getNumValues(); ++j) {
572 llvm::errs() << ", ";
573 llvm::errs() << '"' << A->getValue(j) << '"';
575 llvm::errs() << "}\n";
579 void Driver::PrintHelp(bool ShowHidden) const {
580 getOpts().PrintHelp(llvm::outs(), Name.c_str(), DriverTitle.c_str(),
582 /*Exclude*/options::NoDriverOption |
583 (ShowHidden ? 0 : options::HelpHidden));
586 void Driver::PrintVersion(const Compilation &C, raw_ostream &OS) const {
587 // FIXME: The following handlers should use a callback mechanism, we don't
588 // know what the client would like to do.
589 OS << getClangFullVersion() << '\n';
590 const ToolChain &TC = C.getDefaultToolChain();
591 OS << "Target: " << TC.getTripleString() << '\n';
593 // Print the threading model.
595 // FIXME: Implement correctly.
596 OS << "Thread model: " << "posix" << '\n';
599 /// PrintDiagnosticCategories - Implement the --print-diagnostic-categories
601 static void PrintDiagnosticCategories(raw_ostream &OS) {
602 // Skip the empty category.
603 for (unsigned i = 1, max = DiagnosticIDs::getNumberOfCategories();
605 OS << i << ',' << DiagnosticIDs::getCategoryNameFromID(i) << '\n';
608 bool Driver::HandleImmediateArgs(const Compilation &C) {
609 // The order these options are handled in gcc is all over the place, but we
610 // don't expect inconsistencies w.r.t. that to matter in practice.
612 if (C.getArgs().hasArg(options::OPT_dumpmachine)) {
613 llvm::outs() << C.getDefaultToolChain().getTripleString() << '\n';
617 if (C.getArgs().hasArg(options::OPT_dumpversion)) {
618 // Since -dumpversion is only implemented for pedantic GCC compatibility, we
619 // return an answer which matches our definition of __VERSION__.
621 // If we want to return a more correct answer some day, then we should
622 // introduce a non-pedantically GCC compatible mode to Clang in which we
623 // provide sensible definitions for -dumpversion, __VERSION__, etc.
624 llvm::outs() << "4.2.1\n";
628 if (C.getArgs().hasArg(options::OPT__print_diagnostic_categories)) {
629 PrintDiagnosticCategories(llvm::outs());
633 if (C.getArgs().hasArg(options::OPT_help) ||
634 C.getArgs().hasArg(options::OPT__help_hidden)) {
635 PrintHelp(C.getArgs().hasArg(options::OPT__help_hidden));
639 if (C.getArgs().hasArg(options::OPT__version)) {
640 // Follow gcc behavior and use stdout for --version and stderr for -v.
641 PrintVersion(C, llvm::outs());
645 if (C.getArgs().hasArg(options::OPT_v) ||
646 C.getArgs().hasArg(options::OPT__HASH_HASH_HASH)) {
647 PrintVersion(C, llvm::errs());
648 SuppressMissingInputWarning = true;
651 const ToolChain &TC = C.getDefaultToolChain();
652 if (C.getArgs().hasArg(options::OPT_print_search_dirs)) {
653 llvm::outs() << "programs: =";
654 for (ToolChain::path_list::const_iterator it = TC.getProgramPaths().begin(),
655 ie = TC.getProgramPaths().end(); it != ie; ++it) {
656 if (it != TC.getProgramPaths().begin())
660 llvm::outs() << "\n";
661 llvm::outs() << "libraries: =" << ResourceDir;
663 StringRef sysroot = C.getSysRoot();
665 for (ToolChain::path_list::const_iterator it = TC.getFilePaths().begin(),
666 ie = TC.getFilePaths().end(); it != ie; ++it) {
668 const char *path = it->c_str();
670 llvm::outs() << sysroot << path + 1;
672 llvm::outs() << path;
674 llvm::outs() << "\n";
678 // FIXME: The following handlers should use a callback mechanism, we don't
679 // know what the client would like to do.
680 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_file_name_EQ)) {
681 llvm::outs() << GetFilePath(A->getValue(), TC) << "\n";
685 if (Arg *A = C.getArgs().getLastArg(options::OPT_print_prog_name_EQ)) {
686 llvm::outs() << GetProgramPath(A->getValue(), TC) << "\n";
690 if (C.getArgs().hasArg(options::OPT_print_libgcc_file_name)) {
691 llvm::outs() << GetFilePath("libgcc.a", TC) << "\n";
695 if (C.getArgs().hasArg(options::OPT_print_multi_lib)) {
696 // FIXME: We need tool chain support for this.
697 llvm::outs() << ".;\n";
699 switch (C.getDefaultToolChain().getTriple().getArch()) {
703 case llvm::Triple::x86_64:
704 llvm::outs() << "x86_64;@m64" << "\n";
707 case llvm::Triple::ppc64:
708 llvm::outs() << "ppc64;@m64" << "\n";
714 // FIXME: What is the difference between print-multi-directory and
715 // print-multi-os-directory?
716 if (C.getArgs().hasArg(options::OPT_print_multi_directory) ||
717 C.getArgs().hasArg(options::OPT_print_multi_os_directory)) {
718 switch (C.getDefaultToolChain().getTriple().getArch()) {
720 case llvm::Triple::x86:
721 case llvm::Triple::ppc:
722 llvm::outs() << "." << "\n";
725 case llvm::Triple::x86_64:
726 llvm::outs() << "." << "\n";
729 case llvm::Triple::ppc64:
730 llvm::outs() << "ppc64" << "\n";
739 static unsigned PrintActions1(const Compilation &C, Action *A,
740 std::map<Action*, unsigned> &Ids) {
745 llvm::raw_string_ostream os(str);
747 os << Action::getClassName(A->getKind()) << ", ";
748 if (InputAction *IA = dyn_cast<InputAction>(A)) {
749 os << "\"" << IA->getInputArg().getValue() << "\"";
750 } else if (BindArchAction *BIA = dyn_cast<BindArchAction>(A)) {
751 os << '"' << BIA->getArchName() << '"'
752 << ", {" << PrintActions1(C, *BIA->begin(), Ids) << "}";
755 for (Action::iterator it = A->begin(), ie = A->end(); it != ie;) {
756 os << PrintActions1(C, *it, Ids);
764 unsigned Id = Ids.size();
766 llvm::errs() << Id << ": " << os.str() << ", "
767 << types::getTypeName(A->getType()) << "\n";
772 void Driver::PrintActions(const Compilation &C) const {
773 std::map<Action*, unsigned> Ids;
774 for (ActionList::const_iterator it = C.getActions().begin(),
775 ie = C.getActions().end(); it != ie; ++it)
776 PrintActions1(C, *it, Ids);
779 /// \brief Check whether the given input tree contains any compilation or
780 /// assembly actions.
781 static bool ContainsCompileOrAssembleAction(const Action *A) {
782 if (isa<CompileJobAction>(A) || isa<AssembleJobAction>(A))
785 for (Action::const_iterator it = A->begin(), ie = A->end(); it != ie; ++it)
786 if (ContainsCompileOrAssembleAction(*it))
792 void Driver::BuildUniversalActions(const ToolChain &TC,
793 const DerivedArgList &Args,
794 const InputList &BAInputs,
795 ActionList &Actions) const {
796 llvm::PrettyStackTraceString CrashInfo("Building universal build actions");
797 // Collect the list of architectures. Duplicates are allowed, but should only
798 // be handled once (in the order seen).
799 llvm::StringSet<> ArchNames;
800 SmallVector<const char *, 4> Archs;
801 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
805 if (A->getOption().matches(options::OPT_arch)) {
806 // Validate the option here; we don't save the type here because its
807 // particular spelling may participate in other driver choices.
808 llvm::Triple::ArchType Arch =
809 tools::darwin::getArchTypeForDarwinArchName(A->getValue());
810 if (Arch == llvm::Triple::UnknownArch) {
811 Diag(clang::diag::err_drv_invalid_arch_name)
812 << A->getAsString(Args);
817 if (ArchNames.insert(A->getValue()))
818 Archs.push_back(A->getValue());
822 // When there is no explicit arch for this platform, make sure we still bind
823 // the architecture (to the default) so that -Xarch_ is handled correctly.
825 Archs.push_back(Args.MakeArgString(TC.getDefaultUniversalArchName()));
827 ActionList SingleActions;
828 BuildActions(TC, Args, BAInputs, SingleActions);
830 // Add in arch bindings for every top level action, as well as lipo and
831 // dsymutil steps if needed.
832 for (unsigned i = 0, e = SingleActions.size(); i != e; ++i) {
833 Action *Act = SingleActions[i];
835 // Make sure we can lipo this kind of output. If not (and it is an actual
836 // output) then we disallow, since we can't create an output file with the
837 // right name without overwriting it. We could remove this oddity by just
838 // changing the output names to include the arch, which would also fix
839 // -save-temps. Compatibility wins for now.
841 if (Archs.size() > 1 && !types::canLipoType(Act->getType()))
842 Diag(clang::diag::err_drv_invalid_output_with_multiple_archs)
843 << types::getTypeName(Act->getType());
846 for (unsigned i = 0, e = Archs.size(); i != e; ++i) {
847 Inputs.push_back(new BindArchAction(Act, Archs[i]));
849 Inputs.back()->setOwnsInputs(false);
852 // Lipo if necessary, we do it this way because we need to set the arch flag
853 // so that -Xarch_ gets overwritten.
854 if (Inputs.size() == 1 || Act->getType() == types::TY_Nothing)
855 Actions.append(Inputs.begin(), Inputs.end());
857 Actions.push_back(new LipoJobAction(Inputs, Act->getType()));
859 // Handle debug info queries.
860 Arg *A = Args.getLastArg(options::OPT_g_Group);
861 if (A && !A->getOption().matches(options::OPT_g0) &&
862 !A->getOption().matches(options::OPT_gstabs) &&
863 ContainsCompileOrAssembleAction(Actions.back())) {
865 // Add a 'dsymutil' step if necessary, when debug info is enabled and we
866 // have a compile input. We need to run 'dsymutil' ourselves in such cases
867 // because the debug info will refer to a temporary object file which
868 // will be removed at the end of the compilation process.
869 if (Act->getType() == types::TY_Image) {
871 Inputs.push_back(Actions.back());
873 Actions.push_back(new DsymutilJobAction(Inputs, types::TY_dSYM));
876 // Verify the output (debug information only) if we passed '-verify'.
877 if (Args.hasArg(options::OPT_verify)) {
878 ActionList VerifyInputs;
879 VerifyInputs.push_back(Actions.back());
881 Actions.push_back(new VerifyJobAction(VerifyInputs,
888 // Construct a the list of inputs and their types.
889 void Driver::BuildInputs(const ToolChain &TC, const DerivedArgList &Args,
890 InputList &Inputs) const {
891 // Track the current user specified (-x) input. We also explicitly track the
892 // argument used to set the type; we only want to claim the type when we
893 // actually use it, so we warn about unused -x arguments.
894 types::ID InputType = types::TY_Nothing;
895 Arg *InputTypeArg = 0;
897 for (ArgList::const_iterator it = Args.begin(), ie = Args.end();
901 if (A->getOption().getKind() == Option::InputClass) {
902 const char *Value = A->getValue();
903 types::ID Ty = types::TY_INVALID;
905 // Infer the input type if necessary.
906 if (InputType == types::TY_Nothing) {
907 // If there was an explicit arg for this, claim it.
909 InputTypeArg->claim();
911 // stdin must be handled specially.
912 if (memcmp(Value, "-", 2) == 0) {
913 // If running with -E, treat as a C input (this changes the builtin
914 // macros, for example). This may be overridden by -ObjC below.
916 // Otherwise emit an error but still use a valid type to avoid
917 // spurious errors (e.g., no inputs).
918 if (!Args.hasArgNoClaim(options::OPT_E) && !CCCIsCPP)
919 Diag(clang::diag::err_drv_unknown_stdin_type);
922 // Otherwise lookup by extension.
923 // Fallback is C if invoked as C preprocessor or Object otherwise.
924 // We use a host hook here because Darwin at least has its own
925 // idea of what .s is.
926 if (const char *Ext = strrchr(Value, '.'))
927 Ty = TC.LookupTypeForExtension(Ext + 1);
929 if (Ty == types::TY_INVALID) {
933 Ty = types::TY_Object;
936 // If the driver is invoked as C++ compiler (like clang++ or c++) it
937 // should autodetect some input files as C++ for g++ compatibility.
939 types::ID OldTy = Ty;
940 Ty = types::lookupCXXTypeForCType(Ty);
943 Diag(clang::diag::warn_drv_treating_input_as_cxx)
944 << getTypeName(OldTy) << getTypeName(Ty);
948 // -ObjC and -ObjC++ override the default language, but only for "source
949 // files". We just treat everything that isn't a linker input as a
952 // FIXME: Clean this up if we move the phase sequence into the type.
953 if (Ty != types::TY_Object) {
954 if (Args.hasArg(options::OPT_ObjC))
956 else if (Args.hasArg(options::OPT_ObjCXX))
957 Ty = types::TY_ObjCXX;
960 assert(InputTypeArg && "InputType set w/o InputTypeArg");
961 InputTypeArg->claim();
965 // Check that the file exists, if enabled.
966 if (CheckInputsExist && memcmp(Value, "-", 2) != 0) {
967 SmallString<64> Path(Value);
968 if (Arg *WorkDir = Args.getLastArg(options::OPT_working_directory)) {
969 if (!llvm::sys::path::is_absolute(Path.str())) {
970 SmallString<64> Directory(WorkDir->getValue());
971 llvm::sys::path::append(Directory, Value);
972 Path.assign(Directory);
977 if (llvm::sys::fs::exists(Path.c_str(), exists) || !exists)
978 Diag(clang::diag::err_drv_no_such_file) << Path.str();
980 Inputs.push_back(std::make_pair(Ty, A));
982 Inputs.push_back(std::make_pair(Ty, A));
984 } else if (A->getOption().hasFlag(options::LinkerInput)) {
985 // Just treat as object type, we could make a special type for this if
987 Inputs.push_back(std::make_pair(types::TY_Object, A));
989 } else if (A->getOption().matches(options::OPT_x)) {
991 InputType = types::lookupTypeForTypeSpecifier(A->getValue());
994 // Follow gcc behavior and treat as linker input for invalid -x
995 // options. Its not clear why we shouldn't just revert to unknown; but
996 // this isn't very important, we might as well be bug compatible.
998 Diag(clang::diag::err_drv_unknown_language) << A->getValue();
999 InputType = types::TY_Object;
1003 if (CCCIsCPP && Inputs.empty()) {
1004 // If called as standalone preprocessor, stdin is processed
1005 // if no other input is present.
1006 unsigned Index = Args.getBaseArgs().MakeIndex("-");
1007 Arg *A = Opts->ParseOneArg(Args, Index);
1009 Inputs.push_back(std::make_pair(types::TY_C, A));
1013 void Driver::BuildActions(const ToolChain &TC, const DerivedArgList &Args,
1014 const InputList &Inputs, ActionList &Actions) const {
1015 llvm::PrettyStackTraceString CrashInfo("Building compilation actions");
1017 if (!SuppressMissingInputWarning && Inputs.empty()) {
1018 Diag(clang::diag::err_drv_no_input_files);
1023 phases::ID FinalPhase = getFinalPhase(Args, &FinalPhaseArg);
1025 // Reject -Z* at the top level, these options should never have been exposed
1027 if (Arg *A = Args.getLastArg(options::OPT_Z_Joined))
1028 Diag(clang::diag::err_drv_use_of_Z_option) << A->getAsString(Args);
1030 // Construct the actions to perform.
1031 ActionList LinkerInputs;
1032 ActionList SplitInputs;
1033 llvm::SmallVector<phases::ID, phases::MaxNumberOfPhases> PL;
1034 for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
1035 types::ID InputType = Inputs[i].first;
1036 const Arg *InputArg = Inputs[i].second;
1039 types::getCompilationPhases(InputType, PL);
1041 // If the first step comes after the final phase we are doing as part of
1042 // this compilation, warn the user about it.
1043 phases::ID InitialPhase = PL[0];
1044 if (InitialPhase > FinalPhase) {
1045 // Claim here to avoid the more general unused warning.
1048 // Suppress all unused style warnings with -Qunused-arguments
1049 if (Args.hasArg(options::OPT_Qunused_arguments))
1052 // Special case when final phase determined by binary name, rather than
1053 // by a command-line argument with a corresponding Arg.
1055 Diag(clang::diag::warn_drv_input_file_unused_by_cpp)
1056 << InputArg->getAsString(Args)
1057 << getPhaseName(InitialPhase);
1058 // Special case '-E' warning on a previously preprocessed file to make
1060 else if (InitialPhase == phases::Compile &&
1061 FinalPhase == phases::Preprocess &&
1062 getPreprocessedType(InputType) == types::TY_INVALID)
1063 Diag(clang::diag::warn_drv_preprocessed_input_file_unused)
1064 << InputArg->getAsString(Args)
1066 << FinalPhaseArg ? FinalPhaseArg->getOption().getName() : "";
1068 Diag(clang::diag::warn_drv_input_file_unused)
1069 << InputArg->getAsString(Args)
1070 << getPhaseName(InitialPhase)
1072 << FinalPhaseArg ? FinalPhaseArg->getOption().getName() : "";
1076 // Build the pipeline for this file.
1077 OwningPtr<Action> Current(new InputAction(*InputArg, InputType));
1078 for (llvm::SmallVector<phases::ID, phases::MaxNumberOfPhases>::iterator
1079 i = PL.begin(), e = PL.end(); i != e; ++i) {
1080 phases::ID Phase = *i;
1082 // We are done if this step is past what the user requested.
1083 if (Phase > FinalPhase)
1086 // Queue linker inputs.
1087 if (Phase == phases::Link) {
1088 assert((i + 1) == e && "linking must be final compilation step.");
1089 LinkerInputs.push_back(Current.take());
1093 // Some types skip the assembler phase (e.g., llvm-bc), but we can't
1094 // encode this in the steps because the intermediate type depends on
1095 // arguments. Just special case here.
1096 if (Phase == phases::Assemble && Current->getType() != types::TY_PP_Asm)
1099 // Otherwise construct the appropriate action.
1100 Current.reset(ConstructPhaseAction(Args, Phase, Current.take()));
1101 if (Current->getType() == types::TY_Nothing)
1105 // If we ended with something, add to the output list.
1107 Actions.push_back(Current.take());
1110 // Add a link action if necessary.
1111 if (!LinkerInputs.empty())
1112 Actions.push_back(new LinkJobAction(LinkerInputs, types::TY_Image));
1114 // If we are linking, claim any options which are obviously only used for
1116 if (FinalPhase == phases::Link && PL.size() == 1)
1117 Args.ClaimAllArgs(options::OPT_CompileOnly_Group);
1120 Action *Driver::ConstructPhaseAction(const ArgList &Args, phases::ID Phase,
1121 Action *Input) const {
1122 llvm::PrettyStackTraceString CrashInfo("Constructing phase actions");
1123 // Build the appropriate action.
1125 case phases::Link: llvm_unreachable("link action invalid here.");
1126 case phases::Preprocess: {
1128 // -{M, MM} alter the output type.
1129 if (Args.hasArg(options::OPT_M, options::OPT_MM)) {
1130 OutputTy = types::TY_Dependencies;
1132 OutputTy = Input->getType();
1133 if (!Args.hasFlag(options::OPT_frewrite_includes,
1134 options::OPT_fno_rewrite_includes, false))
1135 OutputTy = types::getPreprocessedType(OutputTy);
1136 assert(OutputTy != types::TY_INVALID &&
1137 "Cannot preprocess this input type!");
1139 return new PreprocessJobAction(Input, OutputTy);
1141 case phases::Precompile: {
1142 types::ID OutputTy = types::TY_PCH;
1143 if (Args.hasArg(options::OPT_fsyntax_only)) {
1144 // Syntax checks should not emit a PCH file
1145 OutputTy = types::TY_Nothing;
1147 return new PrecompileJobAction(Input, OutputTy);
1149 case phases::Compile: {
1150 if (Args.hasArg(options::OPT_fsyntax_only)) {
1151 return new CompileJobAction(Input, types::TY_Nothing);
1152 } else if (Args.hasArg(options::OPT_rewrite_objc)) {
1153 return new CompileJobAction(Input, types::TY_RewrittenObjC);
1154 } else if (Args.hasArg(options::OPT_rewrite_legacy_objc)) {
1155 return new CompileJobAction(Input, types::TY_RewrittenLegacyObjC);
1156 } else if (Args.hasArg(options::OPT__analyze, options::OPT__analyze_auto)) {
1157 return new AnalyzeJobAction(Input, types::TY_Plist);
1158 } else if (Args.hasArg(options::OPT__migrate)) {
1159 return new MigrateJobAction(Input, types::TY_Remap);
1160 } else if (Args.hasArg(options::OPT_emit_ast)) {
1161 return new CompileJobAction(Input, types::TY_AST);
1162 } else if (Args.hasArg(options::OPT_module_file_info)) {
1163 return new CompileJobAction(Input, types::TY_ModuleFile);
1164 } else if (IsUsingLTO(Args)) {
1166 Args.hasArg(options::OPT_S) ? types::TY_LTO_IR : types::TY_LTO_BC;
1167 return new CompileJobAction(Input, Output);
1169 return new CompileJobAction(Input, types::TY_PP_Asm);
1172 case phases::Assemble:
1173 return new AssembleJobAction(Input, types::TY_Object);
1176 llvm_unreachable("invalid phase in ConstructPhaseAction");
1179 bool Driver::IsUsingLTO(const ArgList &Args) const {
1180 // Check for -emit-llvm or -flto.
1181 if (Args.hasArg(options::OPT_emit_llvm) ||
1182 Args.hasFlag(options::OPT_flto, options::OPT_fno_lto, false))
1186 if (const Arg *A = Args.getLastArg(options::OPT_O_Group))
1187 return A->getOption().matches(options::OPT_O4);
1192 void Driver::BuildJobs(Compilation &C) const {
1193 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
1195 Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o);
1197 // It is an error to provide a -o option if we are making multiple output
1200 unsigned NumOutputs = 0;
1201 for (ActionList::const_iterator it = C.getActions().begin(),
1202 ie = C.getActions().end(); it != ie; ++it)
1203 if ((*it)->getType() != types::TY_Nothing)
1206 if (NumOutputs > 1) {
1207 Diag(clang::diag::err_drv_output_argument_with_multiple_files);
1212 // Collect the list of architectures.
1213 llvm::StringSet<> ArchNames;
1214 if (C.getDefaultToolChain().getTriple().isOSDarwin()) {
1215 for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end();
1218 if (A->getOption().matches(options::OPT_arch))
1219 ArchNames.insert(A->getValue());
1223 for (ActionList::const_iterator it = C.getActions().begin(),
1224 ie = C.getActions().end(); it != ie; ++it) {
1227 // If we are linking an image for multiple archs then the linker wants
1228 // -arch_multiple and -final_output <final image name>. Unfortunately, this
1229 // doesn't fit in cleanly because we have to pass this information down.
1231 // FIXME: This is a hack; find a cleaner way to integrate this into the
1233 const char *LinkingOutput = 0;
1234 if (isa<LipoJobAction>(A)) {
1236 LinkingOutput = FinalOutput->getValue();
1238 LinkingOutput = DefaultImageName.c_str();
1242 BuildJobsForAction(C, A, &C.getDefaultToolChain(),
1244 /*AtTopLevel*/ true,
1245 /*MultipleArchs*/ ArchNames.size() > 1,
1246 /*LinkingOutput*/ LinkingOutput,
1250 // If the user passed -Qunused-arguments or there were errors, don't warn
1251 // about any unused arguments.
1252 if (Diags.hasErrorOccurred() ||
1253 C.getArgs().hasArg(options::OPT_Qunused_arguments))
1257 (void) C.getArgs().hasArg(options::OPT__HASH_HASH_HASH);
1259 for (ArgList::const_iterator it = C.getArgs().begin(), ie = C.getArgs().end();
1263 // FIXME: It would be nice to be able to send the argument to the
1264 // DiagnosticsEngine, so that extra values, position, and so on could be
1266 if (!A->isClaimed()) {
1267 if (A->getOption().hasFlag(options::NoArgumentUnused))
1270 // Suppress the warning automatically if this is just a flag, and it is an
1271 // instance of an argument we already claimed.
1272 const Option &Opt = A->getOption();
1273 if (Opt.getKind() == Option::FlagClass) {
1274 bool DuplicateClaimed = false;
1276 for (arg_iterator it = C.getArgs().filtered_begin(&Opt),
1277 ie = C.getArgs().filtered_end(); it != ie; ++it) {
1278 if ((*it)->isClaimed()) {
1279 DuplicateClaimed = true;
1284 if (DuplicateClaimed)
1288 Diag(clang::diag::warn_drv_unused_argument)
1289 << A->getAsString(C.getArgs());
1294 static const Tool *SelectToolForJob(Compilation &C, const ToolChain *TC,
1295 const JobAction *JA,
1296 const ActionList *&Inputs) {
1297 const Tool *ToolForJob = 0;
1299 // See if we should look for a compiler with an integrated assembler. We match
1300 // bottom up, so what we are actually looking for is an assembler job with a
1303 if (TC->useIntegratedAs() &&
1304 !C.getArgs().hasArg(options::OPT_save_temps) &&
1305 isa<AssembleJobAction>(JA) &&
1306 Inputs->size() == 1 && isa<CompileJobAction>(*Inputs->begin())) {
1307 const Tool *Compiler =
1308 TC->SelectTool(cast<JobAction>(**Inputs->begin()));
1311 if (Compiler->hasIntegratedAssembler()) {
1312 Inputs = &(*Inputs)[0]->getInputs();
1313 ToolForJob = Compiler;
1317 // Otherwise use the tool for the current job.
1319 ToolForJob = TC->SelectTool(*JA);
1321 // See if we should use an integrated preprocessor. We do so when we have
1322 // exactly one input, since this is the only use case we care about
1323 // (irrelevant since we don't support combine yet).
1324 if (Inputs->size() == 1 && isa<PreprocessJobAction>(*Inputs->begin()) &&
1325 !C.getArgs().hasArg(options::OPT_no_integrated_cpp) &&
1326 !C.getArgs().hasArg(options::OPT_traditional_cpp) &&
1327 !C.getArgs().hasArg(options::OPT_save_temps) &&
1328 !C.getArgs().hasArg(options::OPT_rewrite_objc) &&
1329 ToolForJob->hasIntegratedCPP())
1330 Inputs = &(*Inputs)[0]->getInputs();
1335 void Driver::BuildJobsForAction(Compilation &C,
1337 const ToolChain *TC,
1338 const char *BoundArch,
1341 const char *LinkingOutput,
1342 InputInfo &Result) const {
1343 llvm::PrettyStackTraceString CrashInfo("Building compilation jobs");
1345 if (const InputAction *IA = dyn_cast<InputAction>(A)) {
1346 // FIXME: It would be nice to not claim this here; maybe the old scheme of
1347 // just using Args was better?
1348 const Arg &Input = IA->getInputArg();
1350 if (Input.getOption().matches(options::OPT_INPUT)) {
1351 const char *Name = Input.getValue();
1352 Result = InputInfo(Name, A->getType(), Name);
1354 Result = InputInfo(&Input, A->getType(), "");
1358 if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) {
1359 const ToolChain *TC;
1360 const char *ArchName = BAA->getArchName();
1363 TC = &getToolChain(C.getArgs(), ArchName);
1365 TC = &C.getDefaultToolChain();
1367 BuildJobsForAction(C, *BAA->begin(), TC, BAA->getArchName(),
1368 AtTopLevel, MultipleArchs, LinkingOutput, Result);
1372 const ActionList *Inputs = &A->getInputs();
1374 const JobAction *JA = cast<JobAction>(A);
1375 const Tool *T = SelectToolForJob(C, TC, JA, Inputs);
1379 // Only use pipes when there is exactly one input.
1380 InputInfoList InputInfos;
1381 for (ActionList::const_iterator it = Inputs->begin(), ie = Inputs->end();
1383 // Treat dsymutil and verify sub-jobs as being at the top-level too, they
1384 // shouldn't get temporary output names.
1385 // FIXME: Clean this up.
1386 bool SubJobAtTopLevel = false;
1387 if (AtTopLevel && (isa<DsymutilJobAction>(A) || isa<VerifyJobAction>(A)))
1388 SubJobAtTopLevel = true;
1391 BuildJobsForAction(C, *it, TC, BoundArch, SubJobAtTopLevel, MultipleArchs,
1393 InputInfos.push_back(II);
1396 // Always use the first input as the base input.
1397 const char *BaseInput = InputInfos[0].getBaseInput();
1399 // ... except dsymutil actions, which use their actual input as the base
1401 if (JA->getType() == types::TY_dSYM)
1402 BaseInput = InputInfos[0].getFilename();
1404 // Determine the place to write output to, if any.
1405 if (JA->getType() == types::TY_Nothing)
1406 Result = InputInfo(A->getType(), BaseInput);
1408 Result = InputInfo(GetNamedOutputPath(C, *JA, BaseInput, BoundArch,
1409 AtTopLevel, MultipleArchs),
1410 A->getType(), BaseInput);
1412 if (CCCPrintBindings && !CCGenDiagnostics) {
1413 llvm::errs() << "# \"" << T->getToolChain().getTripleString() << '"'
1414 << " - \"" << T->getName() << "\", inputs: [";
1415 for (unsigned i = 0, e = InputInfos.size(); i != e; ++i) {
1416 llvm::errs() << InputInfos[i].getAsString();
1418 llvm::errs() << ", ";
1420 llvm::errs() << "], output: " << Result.getAsString() << "\n";
1422 T->ConstructJob(C, *JA, Result, InputInfos,
1423 C.getArgsForToolChain(TC, BoundArch), LinkingOutput);
1427 const char *Driver::GetNamedOutputPath(Compilation &C,
1428 const JobAction &JA,
1429 const char *BaseInput,
1430 const char *BoundArch,
1432 bool MultipleArchs) const {
1433 llvm::PrettyStackTraceString CrashInfo("Computing output path");
1434 // Output to a user requested destination?
1435 if (AtTopLevel && !isa<DsymutilJobAction>(JA) &&
1436 !isa<VerifyJobAction>(JA)) {
1437 if (Arg *FinalOutput = C.getArgs().getLastArg(options::OPT_o))
1438 return C.addResultFile(FinalOutput->getValue(), &JA);
1441 // Default to writing to stdout?
1442 if (AtTopLevel && !CCGenDiagnostics &&
1443 (isa<PreprocessJobAction>(JA) || JA.getType() == types::TY_ModuleFile))
1446 // Output to a temporary file?
1447 if ((!AtTopLevel && !C.getArgs().hasArg(options::OPT_save_temps)) ||
1449 StringRef Name = llvm::sys::path::filename(BaseInput);
1450 std::pair<StringRef, StringRef> Split = Name.split('.');
1451 std::string TmpName =
1452 GetTemporaryPath(Split.first, types::getTypeTempSuffix(JA.getType()));
1453 return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str()));
1456 SmallString<128> BasePath(BaseInput);
1459 // Dsymutil actions should use the full path.
1460 if (isa<DsymutilJobAction>(JA) || isa<VerifyJobAction>(JA))
1461 BaseName = BasePath;
1463 BaseName = llvm::sys::path::filename(BasePath);
1465 // Determine what the derived output name should be.
1466 const char *NamedOutput;
1467 if (JA.getType() == types::TY_Image) {
1468 if (MultipleArchs && BoundArch) {
1469 SmallString<128> Output(DefaultImageName.c_str());
1471 Output.append(BoundArch);
1472 NamedOutput = C.getArgs().MakeArgString(Output.c_str());
1474 NamedOutput = DefaultImageName.c_str();
1476 const char *Suffix = types::getTypeTempSuffix(JA.getType());
1477 assert(Suffix && "All types used for output should have a suffix.");
1479 std::string::size_type End = std::string::npos;
1480 if (!types::appendSuffixForType(JA.getType()))
1481 End = BaseName.rfind('.');
1482 SmallString<128> Suffixed(BaseName.substr(0, End));
1483 if (MultipleArchs && BoundArch) {
1485 Suffixed.append(BoundArch);
1489 NamedOutput = C.getArgs().MakeArgString(Suffixed.c_str());
1492 // If we're saving temps and the temp file conflicts with the input file,
1493 // then avoid overwriting input file.
1494 if (!AtTopLevel && C.getArgs().hasArg(options::OPT_save_temps) &&
1495 NamedOutput == BaseName) {
1497 bool SameFile = false;
1498 SmallString<256> Result;
1499 llvm::sys::fs::current_path(Result);
1500 llvm::sys::path::append(Result, BaseName);
1501 llvm::sys::fs::equivalent(BaseInput, Result.c_str(), SameFile);
1502 // Must share the same path to conflict.
1504 StringRef Name = llvm::sys::path::filename(BaseInput);
1505 std::pair<StringRef, StringRef> Split = Name.split('.');
1506 std::string TmpName =
1507 GetTemporaryPath(Split.first, types::getTypeTempSuffix(JA.getType()));
1508 return C.addTempFile(C.getArgs().MakeArgString(TmpName.c_str()));
1512 // As an annoying special case, PCH generation doesn't strip the pathname.
1513 if (JA.getType() == types::TY_PCH) {
1514 llvm::sys::path::remove_filename(BasePath);
1515 if (BasePath.empty())
1516 BasePath = NamedOutput;
1518 llvm::sys::path::append(BasePath, NamedOutput);
1519 return C.addResultFile(C.getArgs().MakeArgString(BasePath.c_str()), &JA);
1521 return C.addResultFile(NamedOutput, &JA);
1525 std::string Driver::GetFilePath(const char *Name, const ToolChain &TC) const {
1526 // Respect a limited subset of the '-Bprefix' functionality in GCC by
1527 // attempting to use this prefix when looking for file paths.
1528 for (Driver::prefix_list::const_iterator it = PrefixDirs.begin(),
1529 ie = PrefixDirs.end(); it != ie; ++it) {
1530 std::string Dir(*it);
1534 Dir = SysRoot + Dir.substr(1);
1535 llvm::sys::Path P(Dir);
1536 P.appendComponent(Name);
1538 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists)
1542 llvm::sys::Path P(ResourceDir);
1543 P.appendComponent(Name);
1545 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists)
1548 const ToolChain::path_list &List = TC.getFilePaths();
1549 for (ToolChain::path_list::const_iterator
1550 it = List.begin(), ie = List.end(); it != ie; ++it) {
1551 std::string Dir(*it);
1555 Dir = SysRoot + Dir.substr(1);
1556 llvm::sys::Path P(Dir);
1557 P.appendComponent(Name);
1559 if (!llvm::sys::fs::exists(P.str(), Exists) && Exists)
1566 std::string Driver::GetProgramPath(const char *Name,
1567 const ToolChain &TC) const {
1568 // FIXME: Needs a better variable than DefaultTargetTriple
1569 std::string TargetSpecificExecutable(DefaultTargetTriple + "-" + Name);
1570 // Respect a limited subset of the '-Bprefix' functionality in GCC by
1571 // attempting to use this prefix when looking for program paths.
1572 for (Driver::prefix_list::const_iterator it = PrefixDirs.begin(),
1573 ie = PrefixDirs.end(); it != ie; ++it) {
1575 if (!llvm::sys::fs::is_directory(*it, IsDirectory) && IsDirectory) {
1576 llvm::sys::Path P(*it);
1577 P.appendComponent(TargetSpecificExecutable);
1578 if (P.canExecute()) return P.str();
1580 P.appendComponent(Name);
1581 if (P.canExecute()) return P.str();
1583 llvm::sys::Path P(*it + Name);
1584 if (P.canExecute()) return P.str();
1588 const ToolChain::path_list &List = TC.getProgramPaths();
1589 for (ToolChain::path_list::const_iterator
1590 it = List.begin(), ie = List.end(); it != ie; ++it) {
1591 llvm::sys::Path P(*it);
1592 P.appendComponent(TargetSpecificExecutable);
1593 if (P.canExecute()) return P.str();
1595 P.appendComponent(Name);
1596 if (P.canExecute()) return P.str();
1599 // If all else failed, search the path.
1601 P(llvm::sys::Program::FindProgramByName(TargetSpecificExecutable));
1605 P = llvm::sys::Path(llvm::sys::Program::FindProgramByName(Name));
1612 std::string Driver::GetTemporaryPath(StringRef Prefix, const char *Suffix)
1614 // FIXME: This is lame; sys::Path should provide this function (in particular,
1615 // it should know how to find the temporary files dir).
1617 const char *TmpDir = ::getenv("TMPDIR");
1619 TmpDir = ::getenv("TEMP");
1621 TmpDir = ::getenv("TMP");
1624 llvm::sys::Path P(TmpDir);
1625 P.appendComponent(Prefix);
1626 if (P.makeUnique(false, &Error)) {
1627 Diag(clang::diag::err_unable_to_make_temp) << Error;
1631 // FIXME: Grumble, makeUnique sometimes leaves the file around!? PR3837.
1632 P.eraseFromDisk(false, 0);
1635 P.appendSuffix(Suffix);
1639 /// \brief Compute target triple from args.
1641 /// This routine provides the logic to compute a target triple from various
1642 /// args passed to the driver and the default triple string.
1643 static llvm::Triple computeTargetTriple(StringRef DefaultTargetTriple,
1644 const ArgList &Args,
1645 StringRef DarwinArchName) {
1646 // FIXME: Already done in Compilation *Driver::BuildCompilation
1647 if (const Arg *A = Args.getLastArg(options::OPT_target))
1648 DefaultTargetTriple = A->getValue();
1650 llvm::Triple Target(llvm::Triple::normalize(DefaultTargetTriple));
1652 // Handle Darwin-specific options available here.
1653 if (Target.isOSDarwin()) {
1654 // If an explict Darwin arch name is given, that trumps all.
1655 if (!DarwinArchName.empty()) {
1657 tools::darwin::getArchTypeForDarwinArchName(DarwinArchName));
1661 // Handle the Darwin '-arch' flag.
1662 if (Arg *A = Args.getLastArg(options::OPT_arch)) {
1663 llvm::Triple::ArchType DarwinArch
1664 = tools::darwin::getArchTypeForDarwinArchName(A->getValue());
1665 if (DarwinArch != llvm::Triple::UnknownArch)
1666 Target.setArch(DarwinArch);
1670 // Handle pseudo-target flags '-EL' and '-EB'.
1671 if (Arg *A = Args.getLastArg(options::OPT_EL, options::OPT_EB)) {
1672 if (A->getOption().matches(options::OPT_EL)) {
1673 if (Target.getArch() == llvm::Triple::mips)
1674 Target.setArch(llvm::Triple::mipsel);
1675 else if (Target.getArch() == llvm::Triple::mips64)
1676 Target.setArch(llvm::Triple::mips64el);
1678 if (Target.getArch() == llvm::Triple::mipsel)
1679 Target.setArch(llvm::Triple::mips);
1680 else if (Target.getArch() == llvm::Triple::mips64el)
1681 Target.setArch(llvm::Triple::mips64);
1685 // Skip further flag support on OSes which don't support '-m32' or '-m64'.
1686 if (Target.getArchName() == "tce" ||
1687 Target.getOS() == llvm::Triple::AuroraUX ||
1688 Target.getOS() == llvm::Triple::Minix)
1691 // Handle pseudo-target flags '-m32' and '-m64'.
1692 // FIXME: Should this information be in llvm::Triple?
1693 if (Arg *A = Args.getLastArg(options::OPT_m32, options::OPT_m64)) {
1694 if (A->getOption().matches(options::OPT_m32)) {
1695 if (Target.getArch() == llvm::Triple::x86_64)
1696 Target.setArch(llvm::Triple::x86);
1697 if (Target.getArch() == llvm::Triple::ppc64)
1698 Target.setArch(llvm::Triple::ppc);
1700 if (Target.getArch() == llvm::Triple::x86)
1701 Target.setArch(llvm::Triple::x86_64);
1702 if (Target.getArch() == llvm::Triple::ppc)
1703 Target.setArch(llvm::Triple::ppc64);
1710 const ToolChain &Driver::getToolChain(const ArgList &Args,
1711 StringRef DarwinArchName) const {
1712 llvm::Triple Target = computeTargetTriple(DefaultTargetTriple, Args,
1715 ToolChain *&TC = ToolChains[Target.str()];
1717 switch (Target.getOS()) {
1718 case llvm::Triple::AuroraUX:
1719 TC = new toolchains::AuroraUX(*this, Target, Args);
1721 case llvm::Triple::Darwin:
1722 case llvm::Triple::MacOSX:
1723 case llvm::Triple::IOS:
1724 if (Target.getArch() == llvm::Triple::x86 ||
1725 Target.getArch() == llvm::Triple::x86_64 ||
1726 Target.getArch() == llvm::Triple::arm ||
1727 Target.getArch() == llvm::Triple::thumb)
1728 TC = new toolchains::DarwinClang(*this, Target, Args);
1730 TC = new toolchains::Darwin_Generic_GCC(*this, Target, Args);
1732 case llvm::Triple::DragonFly:
1733 TC = new toolchains::DragonFly(*this, Target, Args);
1735 case llvm::Triple::OpenBSD:
1736 TC = new toolchains::OpenBSD(*this, Target, Args);
1738 case llvm::Triple::Bitrig:
1739 TC = new toolchains::Bitrig(*this, Target, Args);
1741 case llvm::Triple::NetBSD:
1742 TC = new toolchains::NetBSD(*this, Target, Args);
1744 case llvm::Triple::FreeBSD:
1745 TC = new toolchains::FreeBSD(*this, Target, Args);
1747 case llvm::Triple::Minix:
1748 TC = new toolchains::Minix(*this, Target, Args);
1750 case llvm::Triple::Linux:
1751 if (Target.getArch() == llvm::Triple::hexagon)
1752 TC = new toolchains::Hexagon_TC(*this, Target, Args);
1754 TC = new toolchains::Linux(*this, Target, Args);
1756 case llvm::Triple::Solaris:
1757 TC = new toolchains::Solaris(*this, Target, Args);
1759 case llvm::Triple::Win32:
1760 TC = new toolchains::Windows(*this, Target, Args);
1762 case llvm::Triple::MinGW32:
1763 // FIXME: We need a MinGW toolchain. Fallthrough for now.
1765 // TCE is an OSless target
1766 if (Target.getArchName() == "tce") {
1767 TC = new toolchains::TCEToolChain(*this, Target, Args);
1770 // If Hexagon is configured as an OSless target
1771 if (Target.getArch() == llvm::Triple::hexagon) {
1772 TC = new toolchains::Hexagon_TC(*this, Target, Args);
1775 TC = new toolchains::Generic_GCC(*this, Target, Args);
1782 bool Driver::ShouldUseClangCompiler(const JobAction &JA) const {
1783 // Check if user requested no clang, or clang doesn't understand this type (we
1784 // only handle single inputs for now).
1785 if (JA.size() != 1 ||
1786 !types::isAcceptedByClang((*JA.begin())->getType()))
1789 // Otherwise make sure this is an action clang understands.
1790 if (!isa<PreprocessJobAction>(JA) && !isa<PrecompileJobAction>(JA) &&
1791 !isa<CompileJobAction>(JA))
1797 /// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and return the
1798 /// grouped values as integers. Numbers which are not provided are set to 0.
1800 /// \return True if the entire string was parsed (9.2), or all groups were
1801 /// parsed (10.3.5extrastuff).
1802 bool Driver::GetReleaseVersion(const char *Str, unsigned &Major,
1803 unsigned &Minor, unsigned &Micro,
1807 Major = Minor = Micro = 0;
1812 Major = (unsigned) strtol(Str, &End, 10);
1813 if (*Str != '\0' && *End == '\0')
1819 Minor = (unsigned) strtol(Str, &End, 10);
1820 if (*Str != '\0' && *End == '\0')
1826 Micro = (unsigned) strtol(Str, &End, 10);
1827 if (*Str != '\0' && *End == '\0')