1 //===--- Driver.h - Clang GCC Compatible Driver -----------------*- C++ -*-===//
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 #ifndef CLANG_DRIVER_DRIVER_H_
11 #define CLANG_DRIVER_DRIVER_H_
13 #include "clang/Basic/Diagnostic.h"
15 #include "clang/Driver/Phases.h"
16 #include "clang/Driver/Types.h"
17 #include "clang/Driver/Util.h"
19 #include "llvm/ADT/StringMap.h"
20 #include "llvm/ADT/StringRef.h"
21 #include "llvm/ADT/Triple.h"
22 #include "llvm/Support/Path.h" // FIXME: Kill when CompilationInfo
29 template<typename T> class ArrayRef;
45 /// Driver - Encapsulate logic for constructing compilation processes
46 /// from a set of gcc-driver-like command line arguments.
50 DiagnosticsEngine &Diags;
53 // Diag - Forwarding function for diagnostics.
54 DiagnosticBuilder Diag(unsigned DiagID) const {
55 return Diags.Report(DiagID);
58 // FIXME: Privatize once interface is stable.
60 /// The name the driver was invoked as.
63 /// The path the driver executable was in, as invoked from the
67 /// The original path to the clang executable.
68 std::string ClangExecutable;
70 /// The path to the installed clang directory, if any.
71 std::string InstalledDir;
73 /// The path to the compiler resource directory.
74 std::string ResourceDir;
76 /// A prefix directory used to emulated a limited subset of GCC's '-Bprefix'
78 /// FIXME: This type of customization should be removed in favor of the
79 /// universal driver when it is ready.
80 typedef SmallVector<std::string, 4> prefix_list;
81 prefix_list PrefixDirs;
83 /// sysroot, if present
86 /// If the standard library is used
89 /// Default target triple.
90 std::string DefaultTargetTriple;
92 /// Default name for linked images (e.g., "a.out").
93 std::string DefaultImageName;
95 /// Driver title to use with help.
96 std::string DriverTitle;
98 /// Information about the host which can be overridden by the user.
99 std::string HostBits, HostMachine, HostSystem, HostRelease;
101 /// The file to log CC_PRINT_OPTIONS output to, if enabled.
102 const char *CCPrintOptionsFilename;
104 /// The file to log CC_PRINT_HEADERS output to, if enabled.
105 const char *CCPrintHeadersFilename;
107 /// The file to log CC_LOG_DIAGNOSTICS output to, if enabled.
108 const char *CCLogDiagnosticsFilename;
110 /// A list of inputs and their types for the given arguments.
111 typedef SmallVector<std::pair<types::ID, const Arg*>, 16> InputList;
113 /// Whether the driver should follow g++ like behavior.
114 unsigned CCCIsCXX : 1;
116 /// Whether the driver is just the preprocessor.
117 unsigned CCCIsCPP : 1;
119 /// Echo commands while executing (in -v style).
120 unsigned CCCEcho : 1;
122 /// Only print tool bindings, don't build any jobs.
123 unsigned CCCPrintBindings : 1;
125 /// Set CC_PRINT_OPTIONS mode, which is like -v but logs the commands to
126 /// CCPrintOptionsFilename or to stderr.
127 unsigned CCPrintOptions : 1;
129 /// Set CC_PRINT_HEADERS mode, which causes the frontend to log header include
130 /// information to CCPrintHeadersFilename or to stderr.
131 unsigned CCPrintHeaders : 1;
133 /// Set CC_LOG_DIAGNOSTICS mode, which causes the frontend to log diagnostics
134 /// to CCLogDiagnosticsFilename or to stderr, in a stable machine readable
136 unsigned CCLogDiagnostics : 1;
138 /// Whether the driver is generating diagnostics for debugging purposes.
139 unsigned CCGenDiagnostics : 1;
142 /// Name to use when invoking gcc/g++.
143 std::string CCCGenericGCCName;
145 /// Whether to check that input files exist when constructing compilation
147 unsigned CheckInputsExist : 1;
150 /// Use lazy precompiled headers for PCH support.
151 unsigned CCCUsePCH : 1;
154 /// Certain options suppress the 'no input files' warning.
155 bool SuppressMissingInputWarning : 1;
157 std::list<std::string> TempFiles;
158 std::list<std::string> ResultFiles;
160 /// \brief Cache of all the ToolChains in use by the driver.
162 /// This maps from the string representation of a triple to a ToolChain
163 /// created targeting that triple. The driver owns all the ToolChain objects
164 /// stored in it, and will clean them up when torn down.
165 mutable llvm::StringMap<ToolChain *> ToolChains;
168 /// TranslateInputArgs - Create a new derived argument list from the input
169 /// arguments, after applying the standard argument translations.
170 DerivedArgList *TranslateInputArgs(const InputArgList &Args) const;
172 // getFinalPhase - Determine which compilation mode we are in and record
173 // which option we used to determine the final phase.
174 phases::ID getFinalPhase(const DerivedArgList &DAL, Arg **FinalPhaseArg = 0)
178 Driver(StringRef _ClangExecutable,
179 StringRef _DefaultTargetTriple,
180 StringRef _DefaultImageName,
182 DiagnosticsEngine &_Diags);
188 /// Name to use when invoking gcc/g++.
189 const std::string &getCCCGenericGCCName() const { return CCCGenericGCCName; }
192 const OptTable &getOpts() const { return *Opts; }
194 const DiagnosticsEngine &getDiags() const { return Diags; }
196 bool getCheckInputsExist() const { return CheckInputsExist; }
198 void setCheckInputsExist(bool Value) { CheckInputsExist = Value; }
200 const std::string &getTitle() { return DriverTitle; }
201 void setTitle(std::string Value) { DriverTitle = Value; }
203 /// \brief Get the path to the main clang executable.
204 const char *getClangProgramPath() const {
205 return ClangExecutable.c_str();
208 /// \brief Get the path to where the clang executable was installed.
209 const char *getInstalledDir() const {
210 if (!InstalledDir.empty())
211 return InstalledDir.c_str();
214 void setInstalledDir(StringRef Value) {
215 InstalledDir = Value;
219 /// @name Primary Functionality
222 /// BuildCompilation - Construct a compilation object for a command
223 /// line argument vector.
225 /// \return A compilation, or 0 if none was built for the given
226 /// argument vector. A null return value does not necessarily
227 /// indicate an error condition, the diagnostics should be queried
228 /// to determine if an error occurred.
229 Compilation *BuildCompilation(ArrayRef<const char *> Args);
231 /// @name Driver Steps
234 /// ParseArgStrings - Parse the given list of strings into an
236 InputArgList *ParseArgStrings(ArrayRef<const char *> Args);
238 /// BuildInputs - Construct the list of inputs and their types from
239 /// the given arguments.
241 /// \param TC - The default host tool chain.
242 /// \param Args - The input arguments.
243 /// \param Inputs - The list to store the resulting compilation
245 void BuildInputs(const ToolChain &TC, const DerivedArgList &Args,
246 InputList &Inputs) const;
248 /// BuildActions - Construct the list of actions to perform for the
249 /// given arguments, which are only done for a single architecture.
251 /// \param TC - The default host tool chain.
252 /// \param Args - The input arguments.
253 /// \param Actions - The list to store the resulting actions onto.
254 void BuildActions(const ToolChain &TC, const DerivedArgList &Args,
255 const InputList &Inputs, ActionList &Actions) const;
257 /// BuildUniversalActions - Construct the list of actions to perform
258 /// for the given arguments, which may require a universal build.
260 /// \param TC - The default host tool chain.
261 /// \param Args - The input arguments.
262 /// \param Actions - The list to store the resulting actions onto.
263 void BuildUniversalActions(const ToolChain &TC, const DerivedArgList &Args,
264 const InputList &BAInputs,
265 ActionList &Actions) const;
267 /// BuildJobs - Bind actions to concrete tools and translate
268 /// arguments to form the list of jobs to run.
270 /// \param C - The compilation that is being built.
271 void BuildJobs(Compilation &C) const;
273 /// ExecuteCompilation - Execute the compilation according to the command line
274 /// arguments and return an appropriate exit code.
276 /// This routine handles additional processing that must be done in addition
277 /// to just running the subprocesses, for example reporting errors, removing
278 /// temporary files, etc.
279 int ExecuteCompilation(const Compilation &C,
280 const Command *&FailingCommand) const;
282 /// generateCompilationDiagnostics - Generate diagnostics information
283 /// including preprocessed source file(s).
285 void generateCompilationDiagnostics(Compilation &C,
286 const Command *FailingCommand);
289 /// @name Helper Methods
292 /// PrintActions - Print the list of actions.
293 void PrintActions(const Compilation &C) const;
295 /// PrintHelp - Print the help text.
297 /// \param ShowHidden - Show hidden options.
298 void PrintHelp(bool ShowHidden) const;
300 /// PrintOptions - Print the list of arguments.
301 void PrintOptions(const ArgList &Args) const;
303 /// PrintVersion - Print the driver version.
304 void PrintVersion(const Compilation &C, raw_ostream &OS) const;
306 /// GetFilePath - Lookup \p Name in the list of file search paths.
308 /// \param TC - The tool chain for additional information on
309 /// directories to search.
311 // FIXME: This should be in CompilationInfo.
312 std::string GetFilePath(const char *Name, const ToolChain &TC) const;
314 /// GetProgramPath - Lookup \p Name in the list of program search paths.
316 /// \param TC - The provided tool chain for additional information on
317 /// directories to search.
319 // FIXME: This should be in CompilationInfo.
320 std::string GetProgramPath(const char *Name, const ToolChain &TC) const;
322 /// HandleImmediateArgs - Handle any arguments which should be
323 /// treated before building actions or binding tools.
325 /// \return Whether any compilation should be built for this
327 bool HandleImmediateArgs(const Compilation &C);
329 /// ConstructAction - Construct the appropriate action to do for
330 /// \p Phase on the \p Input, taking in to account arguments
331 /// like -fsyntax-only or --analyze.
332 Action *ConstructPhaseAction(const ArgList &Args, phases::ID Phase,
333 Action *Input) const;
336 /// BuildJobsForAction - Construct the jobs to perform for the
338 void BuildJobsForAction(Compilation &C,
341 const char *BoundArch,
343 const char *LinkingOutput,
344 InputInfo &Result) const;
346 /// GetNamedOutputPath - Return the name to use for the output of
347 /// the action \p JA. The result is appended to the compilation's
348 /// list of temporary or result files, as appropriate.
350 /// \param C - The compilation.
351 /// \param JA - The action of interest.
352 /// \param BaseInput - The original input file that this action was
354 /// \param AtTopLevel - Whether this is a "top-level" action.
355 const char *GetNamedOutputPath(Compilation &C,
357 const char *BaseInput,
358 bool AtTopLevel) const;
360 /// GetTemporaryPath - Return the pathname of a temporary file to use
361 /// as part of compilation; the file will have the given prefix and suffix.
363 /// GCC goes to extra lengths here to be a bit more robust.
364 std::string GetTemporaryPath(StringRef Prefix, const char *Suffix) const;
366 /// ShouldUseClangCompilar - Should the clang compiler be used to
367 /// handle this action.
368 bool ShouldUseClangCompiler(const Compilation &C, const JobAction &JA,
369 const llvm::Triple &ArchName) const;
371 bool IsUsingLTO(const ArgList &Args) const;
374 /// \brief Retrieves a ToolChain for a particular target triple.
376 /// Will cache ToolChains for the life of the driver object, and create them
378 const ToolChain &getToolChain(const ArgList &Args,
379 StringRef DarwinArchName = "") const;
384 /// GetReleaseVersion - Parse (([0-9]+)(.([0-9]+)(.([0-9]+)?))?)? and
385 /// return the grouped values as integers. Numbers which are not
386 /// provided are set to 0.
388 /// \return True if the entire string was parsed (9.2), or all
389 /// groups were parsed (10.3.5extrastuff). HadExtra is true if all
390 /// groups were parsed but extra characters remain at the end.
391 static bool GetReleaseVersion(const char *Str, unsigned &Major,
392 unsigned &Minor, unsigned &Micro,
396 } // end namespace driver
397 } // end namespace clang