1 //===--- InitHeaderSearch.cpp - Initialize header search paths ------------===// 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 InitHeaderSearch class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "clang/Frontend/Utils.h" 15 #include "clang/Basic/FileManager.h" 16 #include "clang/Basic/LangOptions.h" 17 #include "clang/Config/config.h" // C_INCLUDE_DIRS 18 #include "clang/Lex/HeaderSearch.h" 19 #include "clang/Lex/HeaderSearchOptions.h" 20 #include "llvm/ADT/SmallPtrSet.h" 21 #include "llvm/ADT/SmallString.h" 22 #include "llvm/ADT/SmallVector.h" 23 #include "llvm/ADT/StringExtras.h" 24 #include "llvm/ADT/Triple.h" 25 #include "llvm/ADT/Twine.h" 26 #include "llvm/Support/ErrorHandling.h" 27 #include "llvm/Support/Path.h" 28 #include "llvm/Support/raw_ostream.h" 29 30 using namespace clang; 31 using namespace clang::frontend; 32 33 namespace { 34 35 /// InitHeaderSearch - This class makes it easier to set the search paths of 36 /// a HeaderSearch object. InitHeaderSearch stores several search path lists 37 /// internally, which can be sent to a HeaderSearch object in one swoop. 38 class InitHeaderSearch { 39 std::vector<std::pair<IncludeDirGroup, DirectoryLookup> > IncludePath; 40 typedef std::vector<std::pair<IncludeDirGroup, 41 DirectoryLookup> >::const_iterator path_iterator; 42 std::vector<std::pair<std::string, bool> > SystemHeaderPrefixes; 43 HeaderSearch &Headers; 44 bool Verbose; 45 std::string IncludeSysroot; 46 bool HasSysroot; 47 48 public: 49 50 InitHeaderSearch(HeaderSearch &HS, bool verbose, StringRef sysroot) 51 : Headers(HS), Verbose(verbose), IncludeSysroot(sysroot), 52 HasSysroot(!(sysroot.empty() || sysroot == "/")) { 53 } 54 55 /// AddPath - Add the specified path to the specified group list, prefixing 56 /// the sysroot if used. 57 void AddPath(const Twine &Path, IncludeDirGroup Group, bool isFramework); 58 59 /// AddUnmappedPath - Add the specified path to the specified group list, 60 /// without performing any sysroot remapping. 61 void AddUnmappedPath(const Twine &Path, IncludeDirGroup Group, 62 bool isFramework); 63 64 /// AddSystemHeaderPrefix - Add the specified prefix to the system header 65 /// prefix list. 66 void AddSystemHeaderPrefix(StringRef Prefix, bool IsSystemHeader) { 67 SystemHeaderPrefixes.push_back(std::make_pair(Prefix, IsSystemHeader)); 68 } 69 70 /// AddGnuCPlusPlusIncludePaths - Add the necessary paths to support a gnu 71 /// libstdc++. 72 void AddGnuCPlusPlusIncludePaths(StringRef Base, 73 StringRef ArchDir, 74 StringRef Dir32, 75 StringRef Dir64, 76 const llvm::Triple &triple); 77 78 /// AddMinGWCPlusPlusIncludePaths - Add the necessary paths to support a MinGW 79 /// libstdc++. 80 void AddMinGWCPlusPlusIncludePaths(StringRef Base, 81 StringRef Arch, 82 StringRef Version); 83 84 /// AddMinGW64CXXPaths - Add the necessary paths to support 85 /// libstdc++ of x86_64-w64-mingw32 aka mingw-w64. 86 void AddMinGW64CXXPaths(StringRef Base, 87 StringRef Version); 88 89 // AddDefaultCIncludePaths - Add paths that should always be searched. 90 void AddDefaultCIncludePaths(const llvm::Triple &triple, 91 const HeaderSearchOptions &HSOpts); 92 93 // AddDefaultCPlusPlusIncludePaths - Add paths that should be searched when 94 // compiling c++. 95 void AddDefaultCPlusPlusIncludePaths(const llvm::Triple &triple, 96 const HeaderSearchOptions &HSOpts); 97 98 /// AddDefaultSystemIncludePaths - Adds the default system include paths so 99 /// that e.g. stdio.h is found. 100 void AddDefaultIncludePaths(const LangOptions &Lang, 101 const llvm::Triple &triple, 102 const HeaderSearchOptions &HSOpts); 103 104 /// Realize - Merges all search path lists into one list and send it to 105 /// HeaderSearch. 106 void Realize(const LangOptions &Lang); 107 }; 108 109 } // end anonymous namespace. 110 111 static bool CanPrefixSysroot(StringRef Path) { 112 #if defined(_WIN32) 113 return !Path.empty() && llvm::sys::path::is_separator(Path[0]); 114 #else 115 return llvm::sys::path::is_absolute(Path); 116 #endif 117 } 118 119 void InitHeaderSearch::AddPath(const Twine &Path, IncludeDirGroup Group, 120 bool isFramework) { 121 // Add the path with sysroot prepended, if desired and this is a system header 122 // group. 123 if (HasSysroot) { 124 SmallString<256> MappedPathStorage; 125 StringRef MappedPathStr = Path.toStringRef(MappedPathStorage); 126 if (CanPrefixSysroot(MappedPathStr)) { 127 AddUnmappedPath(IncludeSysroot + Path, Group, isFramework); 128 return; 129 } 130 } 131 132 AddUnmappedPath(Path, Group, isFramework); 133 } 134 135 void InitHeaderSearch::AddUnmappedPath(const Twine &Path, IncludeDirGroup Group, 136 bool isFramework) { 137 assert(!Path.isTriviallyEmpty() && "can't handle empty path here"); 138 139 FileManager &FM = Headers.getFileMgr(); 140 SmallString<256> MappedPathStorage; 141 StringRef MappedPathStr = Path.toStringRef(MappedPathStorage); 142 143 // Compute the DirectoryLookup type. 144 SrcMgr::CharacteristicKind Type; 145 if (Group == Quoted || Group == Angled || Group == IndexHeaderMap) { 146 Type = SrcMgr::C_User; 147 } else if (Group == ExternCSystem) { 148 Type = SrcMgr::C_ExternCSystem; 149 } else { 150 Type = SrcMgr::C_System; 151 } 152 153 // If the directory exists, add it. 154 if (const DirectoryEntry *DE = FM.getDirectory(MappedPathStr)) { 155 IncludePath.push_back( 156 std::make_pair(Group, DirectoryLookup(DE, Type, isFramework))); 157 return; 158 } 159 160 // Check to see if this is an apple-style headermap (which are not allowed to 161 // be frameworks). 162 if (!isFramework) { 163 if (const FileEntry *FE = FM.getFile(MappedPathStr)) { 164 if (const HeaderMap *HM = Headers.CreateHeaderMap(FE)) { 165 // It is a headermap, add it to the search path. 166 IncludePath.push_back( 167 std::make_pair(Group, 168 DirectoryLookup(HM, Type, Group == IndexHeaderMap))); 169 return; 170 } 171 } 172 } 173 174 if (Verbose) 175 llvm::errs() << "ignoring nonexistent directory \"" 176 << MappedPathStr << "\"\n"; 177 } 178 179 void InitHeaderSearch::AddGnuCPlusPlusIncludePaths(StringRef Base, 180 StringRef ArchDir, 181 StringRef Dir32, 182 StringRef Dir64, 183 const llvm::Triple &triple) { 184 // Add the base dir 185 AddPath(Base, CXXSystem, false); 186 187 // Add the multilib dirs 188 llvm::Triple::ArchType arch = triple.getArch(); 189 bool is64bit = arch == llvm::Triple::ppc64 || arch == llvm::Triple::x86_64; 190 if (is64bit) 191 AddPath(Base + "/" + ArchDir + "/" + Dir64, CXXSystem, false); 192 else 193 AddPath(Base + "/" + ArchDir + "/" + Dir32, CXXSystem, false); 194 195 // Add the backward dir 196 AddPath(Base + "/backward", CXXSystem, false); 197 } 198 199 void InitHeaderSearch::AddMinGWCPlusPlusIncludePaths(StringRef Base, 200 StringRef Arch, 201 StringRef Version) { 202 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++", 203 CXXSystem, false); 204 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/" + Arch, 205 CXXSystem, false); 206 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/backward", 207 CXXSystem, false); 208 } 209 210 void InitHeaderSearch::AddMinGW64CXXPaths(StringRef Base, 211 StringRef Version) { 212 // Assumes Base is HeaderSearchOpts' ResourceDir 213 AddPath(Base + "/../../../include/c++/" + Version, 214 CXXSystem, false); 215 AddPath(Base + "/../../../include/c++/" + Version + "/x86_64-w64-mingw32", 216 CXXSystem, false); 217 AddPath(Base + "/../../../include/c++/" + Version + "/i686-w64-mingw32", 218 CXXSystem, false); 219 AddPath(Base + "/../../../include/c++/" + Version + "/backward", 220 CXXSystem, false); 221 } 222 223 void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple, 224 const HeaderSearchOptions &HSOpts) { 225 llvm::Triple::OSType os = triple.getOS(); 226 227 if (HSOpts.UseStandardSystemIncludes) { 228 switch (os) { 229 case llvm::Triple::FreeBSD: 230 case llvm::Triple::NetBSD: 231 case llvm::Triple::OpenBSD: 232 case llvm::Triple::Bitrig: 233 break; 234 default: 235 // FIXME: temporary hack: hard-coded paths. 236 AddPath("/usr/local/include", System, false); 237 break; 238 } 239 } 240 241 // Builtin includes use #include_next directives and should be positioned 242 // just prior C include dirs. 243 if (HSOpts.UseBuiltinIncludes) { 244 // Ignore the sys root, we *always* look for clang headers relative to 245 // supplied path. 246 llvm::sys::Path P(HSOpts.ResourceDir); 247 P.appendComponent("include"); 248 AddUnmappedPath(P.str(), ExternCSystem, false); 249 } 250 251 // All remaining additions are for system include directories, early exit if 252 // we aren't using them. 253 if (!HSOpts.UseStandardSystemIncludes) 254 return; 255 256 // Add dirs specified via 'configure --with-c-include-dirs'. 257 StringRef CIncludeDirs(C_INCLUDE_DIRS); 258 if (CIncludeDirs != "") { 259 SmallVector<StringRef, 5> dirs; 260 CIncludeDirs.split(dirs, ":"); 261 for (SmallVectorImpl<StringRef>::iterator i = dirs.begin(); 262 i != dirs.end(); 263 ++i) 264 AddPath(*i, ExternCSystem, false); 265 return; 266 } 267 268 switch (os) { 269 case llvm::Triple::Linux: 270 case llvm::Triple::Win32: 271 llvm_unreachable("Include management is handled in the driver."); 272 273 case llvm::Triple::Haiku: 274 AddPath("/boot/common/include", System, false); 275 AddPath("/boot/develop/headers/os", System, false); 276 AddPath("/boot/develop/headers/os/app", System, false); 277 AddPath("/boot/develop/headers/os/arch", System, false); 278 AddPath("/boot/develop/headers/os/device", System, false); 279 AddPath("/boot/develop/headers/os/drivers", System, false); 280 AddPath("/boot/develop/headers/os/game", System, false); 281 AddPath("/boot/develop/headers/os/interface", System, false); 282 AddPath("/boot/develop/headers/os/kernel", System, false); 283 AddPath("/boot/develop/headers/os/locale", System, false); 284 AddPath("/boot/develop/headers/os/mail", System, false); 285 AddPath("/boot/develop/headers/os/media", System, false); 286 AddPath("/boot/develop/headers/os/midi", System, false); 287 AddPath("/boot/develop/headers/os/midi2", System, false); 288 AddPath("/boot/develop/headers/os/net", System, false); 289 AddPath("/boot/develop/headers/os/storage", System, false); 290 AddPath("/boot/develop/headers/os/support", System, false); 291 AddPath("/boot/develop/headers/os/translation", System, false); 292 AddPath("/boot/develop/headers/os/add-ons/graphics", System, false); 293 AddPath("/boot/develop/headers/os/add-ons/input_server", System, false); 294 AddPath("/boot/develop/headers/os/add-ons/screen_saver", System, false); 295 AddPath("/boot/develop/headers/os/add-ons/tracker", System, false); 296 AddPath("/boot/develop/headers/os/be_apps/Deskbar", System, false); 297 AddPath("/boot/develop/headers/os/be_apps/NetPositive", System, false); 298 AddPath("/boot/develop/headers/os/be_apps/Tracker", System, false); 299 AddPath("/boot/develop/headers/cpp", System, false); 300 AddPath("/boot/develop/headers/cpp/i586-pc-haiku", System, false); 301 AddPath("/boot/develop/headers/3rdparty", System, false); 302 AddPath("/boot/develop/headers/bsd", System, false); 303 AddPath("/boot/develop/headers/glibc", System, false); 304 AddPath("/boot/develop/headers/posix", System, false); 305 AddPath("/boot/develop/headers", System, false); 306 break; 307 case llvm::Triple::RTEMS: 308 break; 309 case llvm::Triple::Cygwin: 310 AddPath("/usr/include/w32api", System, false); 311 break; 312 case llvm::Triple::MinGW32: { 313 // mingw-w64 crt include paths 314 llvm::sys::Path P(HSOpts.ResourceDir); 315 P.appendComponent("../../../i686-w64-mingw32/include"); // <sysroot>/i686-w64-mingw32/include 316 AddPath(P.str(), System, false); 317 P = llvm::sys::Path(HSOpts.ResourceDir); 318 P.appendComponent("../../../x86_64-w64-mingw32/include"); // <sysroot>/x86_64-w64-mingw32/include 319 AddPath(P.str(), System, false); 320 // mingw.org crt include paths 321 P = llvm::sys::Path(HSOpts.ResourceDir); 322 P.appendComponent("../../../include"); // <sysroot>/include 323 AddPath(P.str(), System, false); 324 AddPath("/mingw/include", System, false); 325 #if defined(_WIN32) 326 AddPath("c:/mingw/include", System, false); 327 #endif 328 } 329 break; 330 331 default: 332 break; 333 } 334 335 if ( os != llvm::Triple::RTEMS ) 336 AddPath("/usr/include", ExternCSystem, false); 337 } 338 339 void InitHeaderSearch:: 340 AddDefaultCPlusPlusIncludePaths(const llvm::Triple &triple, const HeaderSearchOptions &HSOpts) { 341 llvm::Triple::OSType os = triple.getOS(); 342 // FIXME: temporary hack: hard-coded paths. 343 344 if (triple.isOSDarwin()) { 345 switch (triple.getArch()) { 346 default: break; 347 348 case llvm::Triple::ppc: 349 case llvm::Triple::ppc64: 350 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 351 "powerpc-apple-darwin10", "", "ppc64", 352 triple); 353 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.0.0", 354 "powerpc-apple-darwin10", "", "ppc64", 355 triple); 356 break; 357 358 case llvm::Triple::x86: 359 case llvm::Triple::x86_64: 360 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 361 "i686-apple-darwin10", "", "x86_64", triple); 362 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.0.0", 363 "i686-apple-darwin8", "", "", triple); 364 break; 365 366 case llvm::Triple::arm: 367 case llvm::Triple::thumb: 368 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 369 "arm-apple-darwin10", "v7", "", triple); 370 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 371 "arm-apple-darwin10", "v6", "", triple); 372 break; 373 } 374 return; 375 } 376 377 switch (os) { 378 case llvm::Triple::Linux: 379 case llvm::Triple::Win32: 380 llvm_unreachable("Include management is handled in the driver."); 381 382 case llvm::Triple::Cygwin: 383 // Cygwin-1.7 384 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.5.3"); 385 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.4"); 386 // g++-4 / Cygwin-1.5 387 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.2"); 388 break; 389 case llvm::Triple::MinGW32: 390 // mingw-w64 C++ include paths (i686-w64-mingw32 and x86_64-w64-mingw32) 391 AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.5.0"); 392 AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.5.1"); 393 AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.5.2"); 394 AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.5.3"); 395 AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.5.4"); 396 AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.6.0"); 397 AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.6.1"); 398 AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.6.2"); 399 AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.6.3"); 400 AddMinGW64CXXPaths(HSOpts.ResourceDir, "4.7.0"); 401 // mingw.org C++ include paths 402 AddMinGWCPlusPlusIncludePaths("/mingw/lib/gcc", "mingw32", "4.5.2"); //MSYS 403 #if defined(_WIN32) 404 AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.6.2"); 405 AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.6.1"); 406 AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.5.2"); 407 AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.5.0"); 408 AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.4.0"); 409 AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.3.0"); 410 #endif 411 break; 412 case llvm::Triple::DragonFly: 413 AddPath("/usr/include/c++/4.1", CXXSystem, false); 414 break; 415 case llvm::Triple::FreeBSD: 416 // FreeBSD 8.0 417 // FreeBSD 7.3 418 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2", "", "", "", triple); 419 break; 420 case llvm::Triple::NetBSD: 421 AddGnuCPlusPlusIncludePaths("/usr/include/g++", "", "", "", triple); 422 break; 423 case llvm::Triple::OpenBSD: { 424 std::string t = triple.getTriple(); 425 if (t.substr(0, 6) == "x86_64") 426 t.replace(0, 6, "amd64"); 427 AddGnuCPlusPlusIncludePaths("/usr/include/g++", 428 t, "", "", triple); 429 break; 430 } 431 case llvm::Triple::Minix: 432 AddGnuCPlusPlusIncludePaths("/usr/gnu/include/c++/4.4.3", 433 "", "", "", triple); 434 break; 435 case llvm::Triple::Solaris: 436 AddGnuCPlusPlusIncludePaths("/usr/gcc/4.5/include/c++/4.5.2/", 437 "i386-pc-solaris2.11", "", "", triple); 438 // Solaris - Fall though.. 439 case llvm::Triple::AuroraUX: 440 // AuroraUX 441 AddGnuCPlusPlusIncludePaths("/opt/gcc4/include/c++/4.2.4", 442 "i386-pc-solaris2.11", "", "", triple); 443 break; 444 default: 445 break; 446 } 447 } 448 449 void InitHeaderSearch::AddDefaultIncludePaths(const LangOptions &Lang, 450 const llvm::Triple &triple, 451 const HeaderSearchOptions &HSOpts) { 452 // NB: This code path is going away. All of the logic is moving into the 453 // driver which has the information necessary to do target-specific 454 // selections of default include paths. Each target which moves there will be 455 // exempted from this logic here until we can delete the entire pile of code. 456 switch (triple.getOS()) { 457 default: 458 break; // Everything else continues to use this routine's logic. 459 460 case llvm::Triple::Linux: 461 case llvm::Triple::Win32: 462 return; 463 } 464 465 if (Lang.CPlusPlus && HSOpts.UseStandardCXXIncludes && 466 HSOpts.UseStandardSystemIncludes) { 467 if (HSOpts.UseLibcxx) { 468 if (triple.isOSDarwin()) { 469 // On Darwin, libc++ may be installed alongside the compiler in 470 // lib/c++/v1. 471 llvm::sys::Path P(HSOpts.ResourceDir); 472 if (!P.isEmpty()) { 473 P.eraseComponent(); // Remove version from foo/lib/clang/version 474 P.eraseComponent(); // Remove clang from foo/lib/clang 475 476 // Get foo/lib/c++/v1 477 P.appendComponent("c++"); 478 P.appendComponent("v1"); 479 AddUnmappedPath(P.str(), CXXSystem, false); 480 } 481 } 482 // On Solaris, include the support directory for things like xlocale and 483 // fudged system headers. 484 if (triple.getOS() == llvm::Triple::Solaris) 485 AddPath("/usr/include/c++/v1/support/solaris", CXXSystem, false); 486 487 AddPath("/usr/include/c++/v1", CXXSystem, false); 488 } else { 489 AddDefaultCPlusPlusIncludePaths(triple, HSOpts); 490 } 491 } 492 493 AddDefaultCIncludePaths(triple, HSOpts); 494 495 // Add the default framework include paths on Darwin. 496 if (HSOpts.UseStandardSystemIncludes) { 497 if (triple.isOSDarwin()) { 498 AddPath("/System/Library/Frameworks", System, true); 499 AddPath("/Library/Frameworks", System, true); 500 } 501 } 502 } 503 504 /// RemoveDuplicates - If there are duplicate directory entries in the specified 505 /// search list, remove the later (dead) ones. Returns the number of non-system 506 /// headers removed, which is used to update NumAngled. 507 static unsigned RemoveDuplicates(std::vector<DirectoryLookup> &SearchList, 508 unsigned First, bool Verbose) { 509 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenDirs; 510 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenFrameworkDirs; 511 llvm::SmallPtrSet<const HeaderMap *, 8> SeenHeaderMaps; 512 unsigned NonSystemRemoved = 0; 513 for (unsigned i = First; i != SearchList.size(); ++i) { 514 unsigned DirToRemove = i; 515 516 const DirectoryLookup &CurEntry = SearchList[i]; 517 518 if (CurEntry.isNormalDir()) { 519 // If this isn't the first time we've seen this dir, remove it. 520 if (SeenDirs.insert(CurEntry.getDir())) 521 continue; 522 } else if (CurEntry.isFramework()) { 523 // If this isn't the first time we've seen this framework dir, remove it. 524 if (SeenFrameworkDirs.insert(CurEntry.getFrameworkDir())) 525 continue; 526 } else { 527 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?"); 528 // If this isn't the first time we've seen this headermap, remove it. 529 if (SeenHeaderMaps.insert(CurEntry.getHeaderMap())) 530 continue; 531 } 532 533 // If we have a normal #include dir/framework/headermap that is shadowed 534 // later in the chain by a system include location, we actually want to 535 // ignore the user's request and drop the user dir... keeping the system 536 // dir. This is weird, but required to emulate GCC's search path correctly. 537 // 538 // Since dupes of system dirs are rare, just rescan to find the original 539 // that we're nuking instead of using a DenseMap. 540 if (CurEntry.getDirCharacteristic() != SrcMgr::C_User) { 541 // Find the dir that this is the same of. 542 unsigned FirstDir; 543 for (FirstDir = 0; ; ++FirstDir) { 544 assert(FirstDir != i && "Didn't find dupe?"); 545 546 const DirectoryLookup &SearchEntry = SearchList[FirstDir]; 547 548 // If these are different lookup types, then they can't be the dupe. 549 if (SearchEntry.getLookupType() != CurEntry.getLookupType()) 550 continue; 551 552 bool isSame; 553 if (CurEntry.isNormalDir()) 554 isSame = SearchEntry.getDir() == CurEntry.getDir(); 555 else if (CurEntry.isFramework()) 556 isSame = SearchEntry.getFrameworkDir() == CurEntry.getFrameworkDir(); 557 else { 558 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?"); 559 isSame = SearchEntry.getHeaderMap() == CurEntry.getHeaderMap(); 560 } 561 562 if (isSame) 563 break; 564 } 565 566 // If the first dir in the search path is a non-system dir, zap it 567 // instead of the system one. 568 if (SearchList[FirstDir].getDirCharacteristic() == SrcMgr::C_User) 569 DirToRemove = FirstDir; 570 } 571 572 if (Verbose) { 573 llvm::errs() << "ignoring duplicate directory \"" 574 << CurEntry.getName() << "\"\n"; 575 if (DirToRemove != i) 576 llvm::errs() << " as it is a non-system directory that duplicates " 577 << "a system directory\n"; 578 } 579 if (DirToRemove != i) 580 ++NonSystemRemoved; 581 582 // This is reached if the current entry is a duplicate. Remove the 583 // DirToRemove (usually the current dir). 584 SearchList.erase(SearchList.begin()+DirToRemove); 585 --i; 586 } 587 return NonSystemRemoved; 588 } 589 590 591 void InitHeaderSearch::Realize(const LangOptions &Lang) { 592 // Concatenate ANGLE+SYSTEM+AFTER chains together into SearchList. 593 std::vector<DirectoryLookup> SearchList; 594 SearchList.reserve(IncludePath.size()); 595 596 // Quoted arguments go first. 597 for (path_iterator it = IncludePath.begin(), ie = IncludePath.end(); 598 it != ie; ++it) { 599 if (it->first == Quoted) 600 SearchList.push_back(it->second); 601 } 602 // Deduplicate and remember index. 603 RemoveDuplicates(SearchList, 0, Verbose); 604 unsigned NumQuoted = SearchList.size(); 605 606 for (path_iterator it = IncludePath.begin(), ie = IncludePath.end(); 607 it != ie; ++it) { 608 if (it->first == Angled || it->first == IndexHeaderMap) 609 SearchList.push_back(it->second); 610 } 611 612 RemoveDuplicates(SearchList, NumQuoted, Verbose); 613 unsigned NumAngled = SearchList.size(); 614 615 for (path_iterator it = IncludePath.begin(), ie = IncludePath.end(); 616 it != ie; ++it) { 617 if (it->first == System || it->first == ExternCSystem || 618 (!Lang.ObjC1 && !Lang.CPlusPlus && it->first == CSystem) || 619 (/*FIXME !Lang.ObjC1 && */Lang.CPlusPlus && it->first == CXXSystem) || 620 (Lang.ObjC1 && !Lang.CPlusPlus && it->first == ObjCSystem) || 621 (Lang.ObjC1 && Lang.CPlusPlus && it->first == ObjCXXSystem)) 622 SearchList.push_back(it->second); 623 } 624 625 for (path_iterator it = IncludePath.begin(), ie = IncludePath.end(); 626 it != ie; ++it) { 627 if (it->first == After) 628 SearchList.push_back(it->second); 629 } 630 631 // Remove duplicates across both the Angled and System directories. GCC does 632 // this and failing to remove duplicates across these two groups breaks 633 // #include_next. 634 unsigned NonSystemRemoved = RemoveDuplicates(SearchList, NumQuoted, Verbose); 635 NumAngled -= NonSystemRemoved; 636 637 bool DontSearchCurDir = false; // TODO: set to true if -I- is set? 638 Headers.SetSearchPaths(SearchList, NumQuoted, NumAngled, DontSearchCurDir); 639 640 Headers.SetSystemHeaderPrefixes(SystemHeaderPrefixes); 641 642 // If verbose, print the list of directories that will be searched. 643 if (Verbose) { 644 llvm::errs() << "#include \"...\" search starts here:\n"; 645 for (unsigned i = 0, e = SearchList.size(); i != e; ++i) { 646 if (i == NumQuoted) 647 llvm::errs() << "#include <...> search starts here:\n"; 648 const char *Name = SearchList[i].getName(); 649 const char *Suffix; 650 if (SearchList[i].isNormalDir()) 651 Suffix = ""; 652 else if (SearchList[i].isFramework()) 653 Suffix = " (framework directory)"; 654 else { 655 assert(SearchList[i].isHeaderMap() && "Unknown DirectoryLookup"); 656 Suffix = " (headermap)"; 657 } 658 llvm::errs() << " " << Name << Suffix << "\n"; 659 } 660 llvm::errs() << "End of search list.\n"; 661 } 662 } 663 664 void clang::ApplyHeaderSearchOptions(HeaderSearch &HS, 665 const HeaderSearchOptions &HSOpts, 666 const LangOptions &Lang, 667 const llvm::Triple &Triple) { 668 InitHeaderSearch Init(HS, HSOpts.Verbose, HSOpts.Sysroot); 669 670 // Add the user defined entries. 671 for (unsigned i = 0, e = HSOpts.UserEntries.size(); i != e; ++i) { 672 const HeaderSearchOptions::Entry &E = HSOpts.UserEntries[i]; 673 if (E.IgnoreSysRoot) { 674 Init.AddUnmappedPath(E.Path, E.Group, E.IsFramework); 675 } else { 676 Init.AddPath(E.Path, E.Group, E.IsFramework); 677 } 678 } 679 680 Init.AddDefaultIncludePaths(Lang, Triple, HSOpts); 681 682 for (unsigned i = 0, e = HSOpts.SystemHeaderPrefixes.size(); i != e; ++i) 683 Init.AddSystemHeaderPrefix(HSOpts.SystemHeaderPrefixes[i].Prefix, 684 HSOpts.SystemHeaderPrefixes[i].IsSystemHeader); 685 686 if (HSOpts.UseBuiltinIncludes) { 687 // Set up the builtin include directory in the module map. 688 llvm::sys::Path P(HSOpts.ResourceDir); 689 P.appendComponent("include"); 690 if (const DirectoryEntry *Dir = HS.getFileMgr().getDirectory(P.str())) 691 HS.getModuleMap().setBuiltinIncludeDir(Dir); 692 } 693 694 Init.Realize(Lang); 695 } 696
