void CompilerInvocation::CreateFromArgs(CompilerInvocation &Res, const char **ArgBegin, const char **ArgEnd, Diagnostic &Diags) { // Parse the arguments. llvm::OwningPtr<OptTable> Opts(createCC1OptTable()); unsigned MissingArgIndex, MissingArgCount; llvm::OwningPtr<InputArgList> Args( Opts->ParseArgs(ArgBegin, ArgEnd,MissingArgIndex, MissingArgCount)); // Check for missing argument error. if (MissingArgCount) Diags.Report(diag::err_drv_missing_argument) << Args->getArgString(MissingArgIndex) << MissingArgCount; // Issue errors on unknown arguments. for (arg_iterator it = Args->filtered_begin(OPT_UNKNOWN), ie = Args->filtered_end(); it != ie; ++it) Diags.Report(diag::err_drv_unknown_argument) << it->getAsString(*Args); ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags); ParseCodeGenArgs(Res.getCodeGenOpts(), *Args, Diags); ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args); ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags); FrontendOptions::InputKind DashX = ParseFrontendArgs(Res.getFrontendOpts(), *Args, Diags); ParseHeaderSearchArgs(Res.getHeaderSearchOpts(), *Args); if (DashX != FrontendOptions::IK_AST) ParseLangArgs(Res.getLangOpts(), *Args, DashX, Diags); ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args, Diags); ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args); ParseTargetArgs(Res.getTargetOpts(), *Args); }