1 //===--- InitPreprocessor.cpp - PP initialization code. ---------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements the clang::InitializePreprocessor function. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "clang/Frontend/Utils.h" 15 #include "clang/Basic/TargetInfo.h" 16 #include "clang/Frontend/FrontendDiagnostic.h" 17 #include "clang/Frontend/PreprocessorOptions.h" 18 #include "clang/Lex/Preprocessor.h" 19 #include "clang/Basic/FileManager.h" 20 #include "clang/Basic/SourceManager.h" 21 #include "llvm/ADT/APFloat.h" 22 #include "llvm/Support/MemoryBuffer.h" 23 #include "llvm/System/Path.h" 24 using namespace clang; 25 26 // Append a #define line to Buf for Macro. Macro should be of the form XXX, 27 // in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit 28 // "#define XXX Y z W". To get a #define with no value, use "XXX=". 29 static void DefineBuiltinMacro(MacroBuilder &Builder, llvm::StringRef Macro, 30 Diagnostic &Diags) { 31 std::pair<llvm::StringRef, llvm::StringRef> MacroPair = Macro.split('='); 32 llvm::StringRef MacroName = MacroPair.first; 33 llvm::StringRef MacroBody = MacroPair.second; 34 if (MacroName.size() != Macro.size()) { 35 // Per GCC -D semantics, the macro ends at \n if it exists. 36 llvm::StringRef::size_type End = MacroBody.find_first_of("\n\r"); 37 if (End != llvm::StringRef::npos) 38 Diags.Report(diag::warn_fe_macro_contains_embedded_newline) 39 << MacroName; 40 Builder.defineMacro(MacroName, MacroBody.substr(0, End)); 41 } else { 42 // Push "macroname 1". 43 Builder.defineMacro(Macro); 44 } 45 } 46 47 std::string clang::NormalizeDashIncludePath(llvm::StringRef File) { 48 // Implicit include paths should be resolved relative to the current 49 // working directory first, and then use the regular header search 50 // mechanism. The proper way to handle this is to have the 51 // predefines buffer located at the current working directory, but 52 // it has not file entry. For now, workaround this by using an 53 // absolute path if we find the file here, and otherwise letting 54 // header search handle it. 55 llvm::sys::Path Path(File); 56 Path.makeAbsolute(); 57 if (!Path.exists()) 58 Path = File; 59 60 return Lexer::Stringify(Path.str()); 61 } 62 63 /// AddImplicitInclude - Add an implicit #include of the specified file to the 64 /// predefines buffer. 65 static void AddImplicitInclude(MacroBuilder &Builder, llvm::StringRef File) { 66 Builder.append("#include \"" + 67 llvm::Twine(NormalizeDashIncludePath(File)) + "\""); 68 } 69 70 static void AddImplicitIncludeMacros(MacroBuilder &Builder, 71 llvm::StringRef File) { 72 Builder.append("#__include_macros \"" + 73 llvm::Twine(NormalizeDashIncludePath(File)) + "\""); 74 // Marker token to stop the __include_macros fetch loop. 75 Builder.append("##"); // ##? 76 } 77 78 /// AddImplicitIncludePTH - Add an implicit #include using the original file 79 /// used to generate a PTH cache. 80 static void AddImplicitIncludePTH(MacroBuilder &Builder, Preprocessor &PP, 81 llvm::StringRef ImplicitIncludePTH) { 82 PTHManager *P = PP.getPTHManager(); 83 assert(P && "No PTHManager."); 84 const char *OriginalFile = P->getOriginalSourceFile(); 85 86 if (!OriginalFile) { 87 PP.getDiagnostics().Report(diag::err_fe_pth_file_has_no_source_header) 88 << ImplicitIncludePTH; 89 return; 90 } 91 92 AddImplicitInclude(Builder, OriginalFile); 93 } 94 95 /// PickFP - This is used to pick a value based on the FP semantics of the 96 /// specified FP model. 97 template <typename T> 98 static T PickFP(const llvm::fltSemantics *Sem, T IEEESingleVal, 99 T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal, 100 T IEEEQuadVal) { 101 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle) 102 return IEEESingleVal; 103 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble) 104 return IEEEDoubleVal; 105 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::x87DoubleExtended) 106 return X87DoubleExtendedVal; 107 if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble) 108 return PPCDoubleDoubleVal; 109 assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad); 110 return IEEEQuadVal; 111 } 112 113 static void DefineFloatMacros(MacroBuilder &Builder, llvm::StringRef Prefix, 114 const llvm::fltSemantics *Sem) { 115 const char *DenormMin, *Epsilon, *Max, *Min; 116 DenormMin = PickFP(Sem, "1.40129846e-45F", "4.9406564584124654e-324", 117 "3.64519953188247460253e-4951L", 118 "4.94065645841246544176568792868221e-324L", 119 "6.47517511943802511092443895822764655e-4966L"); 120 int Digits = PickFP(Sem, 6, 15, 18, 31, 33); 121 Epsilon = PickFP(Sem, "1.19209290e-7F", "2.2204460492503131e-16", 122 "1.08420217248550443401e-19L", 123 "4.94065645841246544176568792868221e-324L", 124 "1.92592994438723585305597794258492732e-34L"); 125 int MantissaDigits = PickFP(Sem, 24, 53, 64, 106, 113); 126 int Min10Exp = PickFP(Sem, -37, -307, -4931, -291, -4931); 127 int Max10Exp = PickFP(Sem, 38, 308, 4932, 308, 4932); 128 int MinExp = PickFP(Sem, -125, -1021, -16381, -968, -16381); 129 int MaxExp = PickFP(Sem, 128, 1024, 16384, 1024, 16384); 130 Min = PickFP(Sem, "1.17549435e-38F", "2.2250738585072014e-308", 131 "3.36210314311209350626e-4932L", 132 "2.00416836000897277799610805135016e-292L", 133 "3.36210314311209350626267781732175260e-4932L"); 134 Max = PickFP(Sem, "3.40282347e+38F", "1.7976931348623157e+308", 135 "1.18973149535723176502e+4932L", 136 "1.79769313486231580793728971405301e+308L", 137 "1.18973149535723176508575932662800702e+4932L"); 138 139 llvm::Twine DefPrefix = "__" + Prefix + "_"; 140 141 Builder.defineMacro(DefPrefix + "DENORM_MIN__", DenormMin); 142 Builder.defineMacro(DefPrefix + "HAS_DENORM__"); 143 Builder.defineMacro(DefPrefix + "DIG__", llvm::Twine(Digits)); 144 Builder.defineMacro(DefPrefix + "EPSILON__", llvm::Twine(Epsilon)); 145 Builder.defineMacro(DefPrefix + "HAS_INFINITY__"); 146 Builder.defineMacro(DefPrefix + "HAS_QUIET_NAN__"); 147 Builder.defineMacro(DefPrefix + "MANT_DIG__", llvm::Twine(MantissaDigits)); 148 149 Builder.defineMacro(DefPrefix + "MAX_10_EXP__", llvm::Twine(Max10Exp)); 150 Builder.defineMacro(DefPrefix + "MAX_EXP__", llvm::Twine(MaxExp)); 151 Builder.defineMacro(DefPrefix + "MAX__", llvm::Twine(Max)); 152 153 Builder.defineMacro(DefPrefix + "MIN_10_EXP__","("+llvm::Twine(Min10Exp)+")"); 154 Builder.defineMacro(DefPrefix + "MIN_EXP__", "("+llvm::Twine(MinExp)+")"); 155 Builder.defineMacro(DefPrefix + "MIN__", llvm::Twine(Min)); 156 } 157 158 159 /// DefineTypeSize - Emit a macro to the predefines buffer that declares a macro 160 /// named MacroName with the max value for a type with width 'TypeWidth' a 161 /// signedness of 'isSigned' and with a value suffix of 'ValSuffix' (e.g. LL). 162 static void DefineTypeSize(llvm::StringRef MacroName, unsigned TypeWidth, 163 llvm::StringRef ValSuffix, bool isSigned, 164 MacroBuilder& Builder) { 165 long long MaxVal; 166 if (isSigned) 167 MaxVal = (1LL << (TypeWidth - 1)) - 1; 168 else 169 MaxVal = ~0LL >> (64-TypeWidth); 170 171 Builder.defineMacro(MacroName, llvm::Twine(MaxVal) + ValSuffix); 172 } 173 174 /// DefineTypeSize - An overloaded helper that uses TargetInfo to determine 175 /// the width, suffix, and signedness of the given type 176 static void DefineTypeSize(llvm::StringRef MacroName, TargetInfo::IntType Ty, 177 const TargetInfo &TI, MacroBuilder &Builder) { 178 DefineTypeSize(MacroName, TI.getTypeWidth(Ty), TI.getTypeConstantSuffix(Ty), 179 TI.isTypeSigned(Ty), Builder); 180 } 181 182 static void DefineType(const llvm::Twine &MacroName, TargetInfo::IntType Ty, 183 MacroBuilder &Builder) { 184 Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty)); 185 } 186 187 static void DefineTypeWidth(llvm::StringRef MacroName, TargetInfo::IntType Ty, 188 const TargetInfo &TI, MacroBuilder &Builder) { 189 Builder.defineMacro(MacroName, llvm::Twine(TI.getTypeWidth(Ty))); 190 } 191 192 static void DefineExactWidthIntType(TargetInfo::IntType Ty, 193 const TargetInfo &TI, MacroBuilder &Builder) { 194 int TypeWidth = TI.getTypeWidth(Ty); 195 DefineType("__INT" + llvm::Twine(TypeWidth) + "_TYPE__", Ty, Builder); 196 197 llvm::StringRef ConstSuffix(TargetInfo::getTypeConstantSuffix(Ty)); 198 if (!ConstSuffix.empty()) 199 Builder.defineMacro("__INT" + llvm::Twine(TypeWidth) + "_C_SUFFIX__", 200 ConstSuffix); 201 } 202 203 static void InitializePredefinedMacros(const TargetInfo &TI, 204 const LangOptions &LangOpts, 205 MacroBuilder &Builder) { 206 // Compiler version introspection macros. 207 Builder.defineMacro("__llvm__"); // LLVM Backend 208 Builder.defineMacro("__clang__"); // Clang Frontend 209 210 // Currently claim to be compatible with GCC 4.2.1-5621. 211 Builder.defineMacro("__GNUC_MINOR__", "2"); 212 Builder.defineMacro("__GNUC_PATCHLEVEL__", "1"); 213 Builder.defineMacro("__GNUC__", "4"); 214 Builder.defineMacro("__GXX_ABI_VERSION", "1002"); 215 Builder.defineMacro("__VERSION__", "\"4.2.1 Compatible Clang Compiler\""); 216 217 // Initialize language-specific preprocessor defines. 218 219 // These should all be defined in the preprocessor according to the 220 // current language configuration. 221 if (!LangOpts.Microsoft) 222 Builder.defineMacro("__STDC__"); 223 if (LangOpts.AsmPreprocessor) 224 Builder.defineMacro("__ASSEMBLER__"); 225 226 if (!LangOpts.CPlusPlus) { 227 if (LangOpts.C99) 228 Builder.defineMacro("__STDC_VERSION__", "199901L"); 229 else if (!LangOpts.GNUMode && LangOpts.Digraphs) 230 Builder.defineMacro("__STDC_VERSION__", "199409L"); 231 } 232 233 // Standard conforming mode? 234 if (!LangOpts.GNUMode) 235 Builder.defineMacro("__STRICT_ANSI__"); 236 237 if (LangOpts.CPlusPlus0x) 238 Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__"); 239 240 if (LangOpts.Freestanding) 241 Builder.defineMacro("__STDC_HOSTED__", "0"); 242 else 243 Builder.defineMacro("__STDC_HOSTED__"); 244 245 if (LangOpts.ObjC1) { 246 Builder.defineMacro("__OBJC__"); 247 if (LangOpts.ObjCNonFragileABI) { 248 Builder.defineMacro("__OBJC2__"); 249 Builder.defineMacro("OBJC_ZEROCOST_EXCEPTIONS"); 250 } 251 252 if (LangOpts.getGCMode() != LangOptions::NonGC) 253 Builder.defineMacro("__OBJC_GC__"); 254 255 if (LangOpts.NeXTRuntime) 256 Builder.defineMacro("__NEXT_RUNTIME__"); 257 } 258 259 // darwin_constant_cfstrings controls this. This is also dependent 260 // on other things like the runtime I believe. This is set even for C code. 261 Builder.defineMacro("__CONSTANT_CFSTRINGS__"); 262 263 if (LangOpts.ObjC2) 264 Builder.defineMacro("OBJC_NEW_PROPERTIES"); 265 266 if (LangOpts.PascalStrings) 267 Builder.defineMacro("__PASCAL_STRINGS__"); 268 269 if (LangOpts.Blocks) { 270 Builder.defineMacro("__block", "__attribute__((__blocks__(byref)))"); 271 Builder.defineMacro("__BLOCKS__"); 272 } 273 274 if (LangOpts.Exceptions) 275 Builder.defineMacro("__EXCEPTIONS"); 276 277 if (LangOpts.CPlusPlus) { 278 Builder.defineMacro("__DEPRECATED"); 279 Builder.defineMacro("__GNUG__", "4"); 280 Builder.defineMacro("__GXX_WEAK__"); 281 if (LangOpts.GNUMode) 282 Builder.defineMacro("__cplusplus"); 283 else 284 // C++ [cpp.predefined]p1: 285 // The name_ _cplusplusis defined to the value199711Lwhen compiling a 286 // C++ translation unit. 287 Builder.defineMacro("__cplusplus", "199711L"); 288 Builder.defineMacro("__private_extern__", "extern"); 289 // Ugly hack to work with GNU libstdc++. 290 Builder.defineMacro("_GNU_SOURCE"); 291 } 292 293 if (LangOpts.Microsoft) { 294 // Filter out some microsoft extensions when trying to parse in ms-compat 295 // mode. 296 Builder.defineMacro("__int8", "__INT8_TYPE__"); 297 Builder.defineMacro("__int16", "__INT16_TYPE__"); 298 Builder.defineMacro("__int32", "__INT32_TYPE__"); 299 Builder.defineMacro("__int64", "__INT64_TYPE__"); 300 // Both __PRETTY_FUNCTION__ and __FUNCTION__ are GCC extensions, however 301 // VC++ appears to only like __FUNCTION__. 302 Builder.defineMacro("__PRETTY_FUNCTION__", "__FUNCTION__"); 303 // Work around some issues with Visual C++ headerws. 304 if (LangOpts.CPlusPlus) { 305 // Since we define wchar_t in C++ mode. 306 Builder.defineMacro("_WCHAR_T_DEFINED"); 307 Builder.defineMacro("_NATIVE_WCHAR_T_DEFINED"); 308 // FIXME: This should be temporary until we have a __pragma 309 // solution, to avoid some errors flagged in VC++ headers. 310 Builder.defineMacro("_CRT_SECURE_CPP_OVERLOAD_SECURE_NAMES", "0"); 311 } 312 } 313 314 if (LangOpts.Optimize) 315 Builder.defineMacro("__OPTIMIZE__"); 316 if (LangOpts.OptimizeSize) 317 Builder.defineMacro("__OPTIMIZE_SIZE__"); 318 319 // Initialize target-specific preprocessor defines. 320 321 // Define type sizing macros based on the target properties. 322 assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far"); 323 Builder.defineMacro("__CHAR_BIT__", "8"); 324 325 DefineTypeSize("__SCHAR_MAX__", TI.getCharWidth(), "", true, Builder); 326 DefineTypeSize("__SHRT_MAX__", TargetInfo::SignedShort, TI, Builder); 327 DefineTypeSize("__INT_MAX__", TargetInfo::SignedInt, TI, Builder); 328 DefineTypeSize("__LONG_MAX__", TargetInfo::SignedLong, TI, Builder); 329 DefineTypeSize("__LONG_LONG_MAX__", TargetInfo::SignedLongLong, TI, Builder); 330 DefineTypeSize("__WCHAR_MAX__", TI.getWCharType(), TI, Builder); 331 DefineTypeSize("__INTMAX_MAX__", TI.getIntMaxType(), TI, Builder); 332 333 DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Builder); 334 DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Builder); 335 DefineTypeWidth("__INTMAX_WIDTH__", TI.getIntMaxType(), TI, Builder); 336 DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Builder); 337 DefineTypeWidth("__PTRDIFF_WIDTH__", TI.getPtrDiffType(0), TI, Builder); 338 DefineType("__INTPTR_TYPE__", TI.getIntPtrType(), Builder); 339 DefineTypeWidth("__INTPTR_WIDTH__", TI.getIntPtrType(), TI, Builder); 340 DefineType("__SIZE_TYPE__", TI.getSizeType(), Builder); 341 DefineTypeWidth("__SIZE_WIDTH__", TI.getSizeType(), TI, Builder); 342 DefineType("__WCHAR_TYPE__", TI.getWCharType(), Builder); 343 DefineTypeWidth("__WCHAR_WIDTH__", TI.getWCharType(), TI, Builder); 344 DefineType("__WINT_TYPE__", TI.getWIntType(), Builder); 345 DefineTypeWidth("__WINT_WIDTH__", TI.getWIntType(), TI, Builder); 346 DefineTypeWidth("__SIG_ATOMIC_WIDTH__", TI.getSigAtomicType(), TI, Builder); 347 348 DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat()); 349 DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat()); 350 DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat()); 351 352 // Define a __POINTER_WIDTH__ macro for stdint.h. 353 Builder.defineMacro("__POINTER_WIDTH__", 354 llvm::Twine((int)TI.getPointerWidth(0))); 355 356 if (!LangOpts.CharIsSigned) 357 Builder.defineMacro("__CHAR_UNSIGNED__"); 358 359 // Define exact-width integer types for stdint.h 360 Builder.defineMacro("__INT" + llvm::Twine(TI.getCharWidth()) + "_TYPE__", 361 "char"); 362 363 if (TI.getShortWidth() > TI.getCharWidth()) 364 DefineExactWidthIntType(TargetInfo::SignedShort, TI, Builder); 365 366 if (TI.getIntWidth() > TI.getShortWidth()) 367 DefineExactWidthIntType(TargetInfo::SignedInt, TI, Builder); 368 369 if (TI.getLongWidth() > TI.getIntWidth()) 370 DefineExactWidthIntType(TargetInfo::SignedLong, TI, Builder); 371 372 if (TI.getLongLongWidth() > TI.getLongWidth()) 373 DefineExactWidthIntType(TargetInfo::SignedLongLong, TI, Builder); 374 375 // Add __builtin_va_list typedef. 376 Builder.append(TI.getVAListDeclaration()); 377 378 if (const char *Prefix = TI.getUserLabelPrefix()) 379 Builder.defineMacro("__USER_LABEL_PREFIX__", Prefix); 380 381 // Build configuration options. FIXME: these should be controlled by 382 // command line options or something. 383 Builder.defineMacro("__FINITE_MATH_ONLY__", "0"); 384 385 if (LangOpts.GNUInline) 386 Builder.defineMacro("__GNUC_GNU_INLINE__"); 387 else 388 Builder.defineMacro("__GNUC_STDC_INLINE__"); 389 390 if (LangOpts.NoInline) 391 Builder.defineMacro("__NO_INLINE__"); 392 393 if (unsigned PICLevel = LangOpts.PICLevel) { 394 Builder.defineMacro("__PIC__", llvm::Twine(PICLevel)); 395 Builder.defineMacro("__pic__", llvm::Twine(PICLevel)); 396 } 397 398 // Macros to control C99 numerics and <float.h> 399 Builder.defineMacro("__FLT_EVAL_METHOD__", "0"); 400 Builder.defineMacro("__FLT_RADIX__", "2"); 401 int Dig = PickFP(&TI.getLongDoubleFormat(), -1/*FIXME*/, 17, 21, 33, 36); 402 Builder.defineMacro("__DECIMAL_DIG__", llvm::Twine(Dig)); 403 404 if (LangOpts.getStackProtectorMode() == LangOptions::SSPOn) 405 Builder.defineMacro("__SSP__"); 406 else if (LangOpts.getStackProtectorMode() == LangOptions::SSPReq) 407 Builder.defineMacro("__SSP_ALL__", "2"); 408 409 // Get other target #defines. 410 TI.getTargetDefines(LangOpts, Builder); 411 } 412 413 // Initialize the remapping of files to alternative contents, e.g., 414 // those specified through other files. 415 static void InitializeFileRemapping(Diagnostic &Diags, 416 SourceManager &SourceMgr, 417 FileManager &FileMgr, 418 const PreprocessorOptions &InitOpts) { 419 // Remap files in the source manager. 420 for (PreprocessorOptions::remapped_file_iterator 421 Remap = InitOpts.remapped_file_begin(), 422 RemapEnd = InitOpts.remapped_file_end(); 423 Remap != RemapEnd; 424 ++Remap) { 425 // Find the file that we're mapping to. 426 const FileEntry *ToFile = FileMgr.getFile(Remap->second); 427 if (!ToFile) { 428 Diags.Report(diag::err_fe_remap_missing_to_file) 429 << Remap->first << Remap->second; 430 continue; 431 } 432 433 // Create the file entry for the file that we're mapping from. 434 const FileEntry *FromFile = FileMgr.getVirtualFile(Remap->first, 435 ToFile->getSize(), 436 0); 437 if (!FromFile) { 438 Diags.Report(diag::err_fe_remap_missing_from_file) 439 << Remap->first; 440 continue; 441 } 442 443 // Load the contents of the file we're mapping to. 444 std::string ErrorStr; 445 const llvm::MemoryBuffer *Buffer 446 = llvm::MemoryBuffer::getFile(ToFile->getName(), &ErrorStr); 447 if (!Buffer) { 448 Diags.Report(diag::err_fe_error_opening) 449 << Remap->second << ErrorStr; 450 continue; 451 } 452 453 // Override the contents of the "from" file with the contents of 454 // the "to" file. 455 SourceMgr.overrideFileContents(FromFile, Buffer); 456 } 457 } 458 459 /// InitializePreprocessor - Initialize the preprocessor getting it and the 460 /// environment ready to process a single file. This returns true on error. 461 /// 462 void clang::InitializePreprocessor(Preprocessor &PP, 463 const PreprocessorOptions &InitOpts, 464 const HeaderSearchOptions &HSOpts) { 465 std::string PredefineBuffer; 466 PredefineBuffer.reserve(4080); 467 llvm::raw_string_ostream Predefines(PredefineBuffer); 468 MacroBuilder Builder(Predefines); 469 470 InitializeFileRemapping(PP.getDiagnostics(), PP.getSourceManager(), 471 PP.getFileManager(), InitOpts); 472 473 Builder.append("# 1 \"<built-in>\" 3"); 474 475 // Install things like __POWERPC__, __GNUC__, etc into the macro table. 476 if (InitOpts.UsePredefines) 477 InitializePredefinedMacros(PP.getTargetInfo(), PP.getLangOptions(), 478 Builder); 479 480 // Add on the predefines from the driver. Wrap in a #line directive to report 481 // that they come from the command line. 482 Builder.append("# 1 \"<command line>\" 1"); 483 484 // Process #define's and #undef's in the order they are given. 485 for (unsigned i = 0, e = InitOpts.Macros.size(); i != e; ++i) { 486 if (InitOpts.Macros[i].second) // isUndef 487 Builder.undefineMacro(InitOpts.Macros[i].first); 488 else 489 DefineBuiltinMacro(Builder, InitOpts.Macros[i].first, 490 PP.getDiagnostics()); 491 } 492 493 // If -imacros are specified, include them now. These are processed before 494 // any -include directives. 495 for (unsigned i = 0, e = InitOpts.MacroIncludes.size(); i != e; ++i) 496 AddImplicitIncludeMacros(Builder, InitOpts.MacroIncludes[i]); 497 498 // Process -include directives. 499 for (unsigned i = 0, e = InitOpts.Includes.size(); i != e; ++i) { 500 const std::string &Path = InitOpts.Includes[i]; 501 if (Path == InitOpts.ImplicitPTHInclude) 502 AddImplicitIncludePTH(Builder, PP, Path); 503 else 504 AddImplicitInclude(Builder, Path); 505 } 506 507 // Exit the command line and go back to <built-in> (2 is LC_LEAVE). 508 Builder.append("# 1 \"<built-in>\" 2"); 509 510 // Copy PredefinedBuffer into the Preprocessor. 511 PP.setPredefines(Predefines.str()); 512 513 // Initialize the header search object. 514 ApplyHeaderSearchOptions(PP.getHeaderSearchInfo(), HSOpts, 515 PP.getLangOptions(), 516 PP.getTargetInfo().getTriple()); 517 } 518