1 //===--- InitHeaderSearch.cpp - Initialize header search paths ------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file implements the InitHeaderSearch class. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "clang/Basic/FileManager.h" 14 #include "clang/Basic/LangOptions.h" 15 #include "clang/Config/config.h" // C_INCLUDE_DIRS 16 #include "clang/Frontend/FrontendDiagnostic.h" 17 #include "clang/Frontend/Utils.h" 18 #include "clang/Lex/HeaderMap.h" 19 #include "clang/Lex/HeaderSearch.h" 20 #include "clang/Lex/HeaderSearchOptions.h" 21 #include "llvm/ADT/SmallPtrSet.h" 22 #include "llvm/ADT/SmallString.h" 23 #include "llvm/ADT/SmallVector.h" 24 #include "llvm/ADT/StringExtras.h" 25 #include "llvm/ADT/Triple.h" 26 #include "llvm/ADT/Twine.h" 27 #include "llvm/Support/ErrorHandling.h" 28 #include "llvm/Support/Path.h" 29 #include "llvm/Support/raw_ostream.h" 30 31 using namespace clang; 32 using namespace clang::frontend; 33 34 namespace { 35 36 /// InitHeaderSearch - This class makes it easier to set the search paths of 37 /// a HeaderSearch object. InitHeaderSearch stores several search path lists 38 /// internally, which can be sent to a HeaderSearch object in one swoop. 39 class InitHeaderSearch { 40 std::vector<std::pair<IncludeDirGroup, DirectoryLookup> > IncludePath; 41 typedef std::vector<std::pair<IncludeDirGroup, 42 DirectoryLookup> >::const_iterator path_iterator; 43 std::vector<std::pair<std::string, bool> > SystemHeaderPrefixes; 44 HeaderSearch &Headers; 45 bool Verbose; 46 std::string IncludeSysroot; 47 bool HasSysroot; 48 49 public: 50 51 InitHeaderSearch(HeaderSearch &HS, bool verbose, StringRef sysroot) 52 : Headers(HS), Verbose(verbose), IncludeSysroot(sysroot), 53 HasSysroot(!(sysroot.empty() || sysroot == "/")) { 54 } 55 56 /// AddPath - Add the specified path to the specified group list, prefixing 57 /// the sysroot if used. 58 /// Returns true if the path exists, false if it was ignored. 59 bool AddPath(const Twine &Path, IncludeDirGroup Group, bool isFramework); 60 61 /// AddUnmappedPath - Add the specified path to the specified group list, 62 /// without performing any sysroot remapping. 63 /// Returns true if the path exists, false if it was ignored. 64 bool AddUnmappedPath(const Twine &Path, IncludeDirGroup Group, 65 bool isFramework); 66 67 /// AddSystemHeaderPrefix - Add the specified prefix to the system header 68 /// prefix list. 69 void AddSystemHeaderPrefix(StringRef Prefix, bool IsSystemHeader) { 70 SystemHeaderPrefixes.emplace_back(Prefix, IsSystemHeader); 71 } 72 73 /// AddGnuCPlusPlusIncludePaths - Add the necessary paths to support a gnu 74 /// libstdc++. 75 /// Returns true if the \p Base path was found, false if it does not exist. 76 bool AddGnuCPlusPlusIncludePaths(StringRef Base, StringRef ArchDir, 77 StringRef Dir32, StringRef Dir64, 78 const llvm::Triple &triple); 79 80 /// AddMinGWCPlusPlusIncludePaths - Add the necessary paths to support a MinGW 81 /// libstdc++. 82 void AddMinGWCPlusPlusIncludePaths(StringRef Base, 83 StringRef Arch, 84 StringRef Version); 85 86 // AddDefaultCIncludePaths - Add paths that should always be searched. 87 void AddDefaultCIncludePaths(const llvm::Triple &triple, 88 const HeaderSearchOptions &HSOpts); 89 90 // AddDefaultCPlusPlusIncludePaths - Add paths that should be searched when 91 // compiling c++. 92 void AddDefaultCPlusPlusIncludePaths(const LangOptions &LangOpts, 93 const llvm::Triple &triple, 94 const HeaderSearchOptions &HSOpts); 95 96 /// AddDefaultSystemIncludePaths - Adds the default system include paths so 97 /// that e.g. stdio.h is found. 98 void AddDefaultIncludePaths(const LangOptions &Lang, 99 const llvm::Triple &triple, 100 const HeaderSearchOptions &HSOpts); 101 102 /// Realize - Merges all search path lists into one list and send it to 103 /// HeaderSearch. 104 void Realize(const LangOptions &Lang); 105 }; 106 107 } // end anonymous namespace. 108 109 static bool CanPrefixSysroot(StringRef Path) { 110 #if defined(_WIN32) 111 return !Path.empty() && llvm::sys::path::is_separator(Path[0]); 112 #else 113 return llvm::sys::path::is_absolute(Path); 114 #endif 115 } 116 117 bool InitHeaderSearch::AddPath(const Twine &Path, IncludeDirGroup Group, 118 bool isFramework) { 119 // Add the path with sysroot prepended, if desired and this is a system header 120 // group. 121 if (HasSysroot) { 122 SmallString<256> MappedPathStorage; 123 StringRef MappedPathStr = Path.toStringRef(MappedPathStorage); 124 if (CanPrefixSysroot(MappedPathStr)) { 125 return AddUnmappedPath(IncludeSysroot + Path, Group, isFramework); 126 } 127 } 128 129 return AddUnmappedPath(Path, Group, isFramework); 130 } 131 132 bool InitHeaderSearch::AddUnmappedPath(const Twine &Path, IncludeDirGroup Group, 133 bool isFramework) { 134 assert(!Path.isTriviallyEmpty() && "can't handle empty path here"); 135 136 FileManager &FM = Headers.getFileMgr(); 137 SmallString<256> MappedPathStorage; 138 StringRef MappedPathStr = Path.toStringRef(MappedPathStorage); 139 140 // If use system headers while cross-compiling, emit the warning. 141 if (HasSysroot && (MappedPathStr.startswith("/usr/include") || 142 MappedPathStr.startswith("/usr/local/include"))) { 143 Headers.getDiags().Report(diag::warn_poison_system_directories) 144 << MappedPathStr; 145 } 146 147 // Compute the DirectoryLookup type. 148 SrcMgr::CharacteristicKind Type; 149 if (Group == Quoted || Group == Angled || Group == IndexHeaderMap) { 150 Type = SrcMgr::C_User; 151 } else if (Group == ExternCSystem) { 152 Type = SrcMgr::C_ExternCSystem; 153 } else { 154 Type = SrcMgr::C_System; 155 } 156 157 // If the directory exists, add it. 158 if (auto DE = FM.getOptionalDirectoryRef(MappedPathStr)) { 159 IncludePath.push_back( 160 std::make_pair(Group, DirectoryLookup(*DE, Type, isFramework))); 161 return true; 162 } 163 164 // Check to see if this is an apple-style headermap (which are not allowed to 165 // be frameworks). 166 if (!isFramework) { 167 if (auto FE = FM.getFile(MappedPathStr)) { 168 if (const HeaderMap *HM = Headers.CreateHeaderMap(*FE)) { 169 // It is a headermap, add it to the search path. 170 IncludePath.push_back( 171 std::make_pair(Group, 172 DirectoryLookup(HM, Type, Group == IndexHeaderMap))); 173 return true; 174 } 175 } 176 } 177 178 if (Verbose) 179 llvm::errs() << "ignoring nonexistent directory \"" 180 << MappedPathStr << "\"\n"; 181 return false; 182 } 183 184 bool InitHeaderSearch::AddGnuCPlusPlusIncludePaths(StringRef Base, 185 StringRef ArchDir, 186 StringRef Dir32, 187 StringRef Dir64, 188 const llvm::Triple &triple) { 189 // Add the base dir 190 bool IsBaseFound = AddPath(Base, CXXSystem, false); 191 192 // Add the multilib dirs 193 llvm::Triple::ArchType arch = triple.getArch(); 194 bool is64bit = arch == llvm::Triple::ppc64 || arch == llvm::Triple::x86_64; 195 if (is64bit) 196 AddPath(Base + "/" + ArchDir + "/" + Dir64, CXXSystem, false); 197 else 198 AddPath(Base + "/" + ArchDir + "/" + Dir32, CXXSystem, false); 199 200 // Add the backward dir 201 AddPath(Base + "/backward", CXXSystem, false); 202 return IsBaseFound; 203 } 204 205 void InitHeaderSearch::AddMinGWCPlusPlusIncludePaths(StringRef Base, 206 StringRef Arch, 207 StringRef Version) { 208 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++", 209 CXXSystem, false); 210 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/" + Arch, 211 CXXSystem, false); 212 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/backward", 213 CXXSystem, false); 214 } 215 216 void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple, 217 const HeaderSearchOptions &HSOpts) { 218 llvm::Triple::OSType os = triple.getOS(); 219 220 if (triple.isOSDarwin()) { 221 llvm_unreachable("Include management is handled in the driver."); 222 } 223 224 if (HSOpts.UseStandardSystemIncludes) { 225 switch (os) { 226 case llvm::Triple::CloudABI: 227 case llvm::Triple::FreeBSD: 228 case llvm::Triple::NetBSD: 229 case llvm::Triple::OpenBSD: 230 case llvm::Triple::NaCl: 231 case llvm::Triple::PS4: 232 case llvm::Triple::ELFIAMCU: 233 case llvm::Triple::Fuchsia: 234 break; 235 case llvm::Triple::Win32: 236 if (triple.getEnvironment() != llvm::Triple::Cygnus) 237 break; 238 LLVM_FALLTHROUGH; 239 default: 240 // FIXME: temporary hack: hard-coded paths. 241 AddPath("/usr/local/include", System, false); 242 break; 243 } 244 } 245 246 // Builtin includes use #include_next directives and should be positioned 247 // just prior C include dirs. 248 if (HSOpts.UseBuiltinIncludes) { 249 // Ignore the sys root, we *always* look for clang headers relative to 250 // supplied path. 251 SmallString<128> P = StringRef(HSOpts.ResourceDir); 252 llvm::sys::path::append(P, "include"); 253 AddUnmappedPath(P, ExternCSystem, false); 254 } 255 256 // All remaining additions are for system include directories, early exit if 257 // we aren't using them. 258 if (!HSOpts.UseStandardSystemIncludes) 259 return; 260 261 // Add dirs specified via 'configure --with-c-include-dirs'. 262 StringRef CIncludeDirs(C_INCLUDE_DIRS); 263 if (CIncludeDirs != "") { 264 SmallVector<StringRef, 5> dirs; 265 CIncludeDirs.split(dirs, ":"); 266 for (StringRef dir : dirs) 267 AddPath(dir, ExternCSystem, false); 268 return; 269 } 270 271 switch (os) { 272 case llvm::Triple::Linux: 273 case llvm::Triple::Hurd: 274 case llvm::Triple::Solaris: 275 llvm_unreachable("Include management is handled in the driver."); 276 277 case llvm::Triple::CloudABI: { 278 // <sysroot>/<triple>/include 279 SmallString<128> P = StringRef(HSOpts.ResourceDir); 280 llvm::sys::path::append(P, "../../..", triple.str(), "include"); 281 AddPath(P, System, false); 282 break; 283 } 284 285 case llvm::Triple::Haiku: 286 AddPath("/boot/system/non-packaged/develop/headers", System, false); 287 AddPath("/boot/system/develop/headers/os", System, false); 288 AddPath("/boot/system/develop/headers/os/app", System, false); 289 AddPath("/boot/system/develop/headers/os/arch", System, false); 290 AddPath("/boot/system/develop/headers/os/device", System, false); 291 AddPath("/boot/system/develop/headers/os/drivers", System, false); 292 AddPath("/boot/system/develop/headers/os/game", System, false); 293 AddPath("/boot/system/develop/headers/os/interface", System, false); 294 AddPath("/boot/system/develop/headers/os/kernel", System, false); 295 AddPath("/boot/system/develop/headers/os/locale", System, false); 296 AddPath("/boot/system/develop/headers/os/mail", System, false); 297 AddPath("/boot/system/develop/headers/os/media", System, false); 298 AddPath("/boot/system/develop/headers/os/midi", System, false); 299 AddPath("/boot/system/develop/headers/os/midi2", System, false); 300 AddPath("/boot/system/develop/headers/os/net", System, false); 301 AddPath("/boot/system/develop/headers/os/opengl", System, false); 302 AddPath("/boot/system/develop/headers/os/storage", System, false); 303 AddPath("/boot/system/develop/headers/os/support", System, false); 304 AddPath("/boot/system/develop/headers/os/translation", System, false); 305 AddPath("/boot/system/develop/headers/os/add-ons/graphics", System, false); 306 AddPath("/boot/system/develop/headers/os/add-ons/input_server", System, false); 307 AddPath("/boot/system/develop/headers/os/add-ons/mail_daemon", System, false); 308 AddPath("/boot/system/develop/headers/os/add-ons/registrar", System, false); 309 AddPath("/boot/system/develop/headers/os/add-ons/screen_saver", System, false); 310 AddPath("/boot/system/develop/headers/os/add-ons/tracker", System, false); 311 AddPath("/boot/system/develop/headers/os/be_apps/Deskbar", System, false); 312 AddPath("/boot/system/develop/headers/os/be_apps/NetPositive", System, false); 313 AddPath("/boot/system/develop/headers/os/be_apps/Tracker", System, false); 314 AddPath("/boot/system/develop/headers/3rdparty", System, false); 315 AddPath("/boot/system/develop/headers/bsd", System, false); 316 AddPath("/boot/system/develop/headers/glibc", System, false); 317 AddPath("/boot/system/develop/headers/posix", System, false); 318 AddPath("/boot/system/develop/headers", System, false); 319 break; 320 case llvm::Triple::RTEMS: 321 break; 322 case llvm::Triple::Win32: 323 switch (triple.getEnvironment()) { 324 default: llvm_unreachable("Include management is handled in the driver."); 325 case llvm::Triple::Cygnus: 326 AddPath("/usr/include/w32api", System, false); 327 break; 328 case llvm::Triple::GNU: 329 break; 330 } 331 break; 332 default: 333 break; 334 } 335 336 switch (os) { 337 case llvm::Triple::CloudABI: 338 case llvm::Triple::RTEMS: 339 case llvm::Triple::NaCl: 340 case llvm::Triple::ELFIAMCU: 341 case llvm::Triple::Fuchsia: 342 break; 343 case llvm::Triple::PS4: { 344 // <isysroot> gets prepended later in AddPath(). 345 std::string BaseSDKPath = ""; 346 if (!HasSysroot) { 347 const char *envValue = getenv("SCE_ORBIS_SDK_DIR"); 348 if (envValue) 349 BaseSDKPath = envValue; 350 else { 351 // HSOpts.ResourceDir variable contains the location of Clang's 352 // resource files. 353 // Assuming that Clang is configured for PS4 without 354 // --with-clang-resource-dir option, the location of Clang's resource 355 // files is <SDK_DIR>/host_tools/lib/clang 356 SmallString<128> P = StringRef(HSOpts.ResourceDir); 357 llvm::sys::path::append(P, "../../.."); 358 BaseSDKPath = P.str(); 359 } 360 } 361 AddPath(BaseSDKPath + "/target/include", System, false); 362 if (triple.isPS4CPU()) 363 AddPath(BaseSDKPath + "/target/include_common", System, false); 364 LLVM_FALLTHROUGH; 365 } 366 default: 367 AddPath("/usr/include", ExternCSystem, false); 368 break; 369 } 370 } 371 372 void InitHeaderSearch::AddDefaultCPlusPlusIncludePaths( 373 const LangOptions &LangOpts, const llvm::Triple &triple, 374 const HeaderSearchOptions &HSOpts) { 375 llvm::Triple::OSType os = triple.getOS(); 376 // FIXME: temporary hack: hard-coded paths. 377 378 if (triple.isOSDarwin()) { 379 llvm_unreachable("Include management is handled in the driver."); 380 } 381 382 switch (os) { 383 case llvm::Triple::Linux: 384 case llvm::Triple::Hurd: 385 case llvm::Triple::Solaris: 386 llvm_unreachable("Include management is handled in the driver."); 387 break; 388 case llvm::Triple::Win32: 389 switch (triple.getEnvironment()) { 390 default: llvm_unreachable("Include management is handled in the driver."); 391 case llvm::Triple::Cygnus: 392 // Cygwin-1.7 393 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.7.3"); 394 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.5.3"); 395 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.4"); 396 // g++-4 / Cygwin-1.5 397 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.2"); 398 break; 399 } 400 break; 401 case llvm::Triple::DragonFly: 402 AddPath("/usr/include/c++/5.0", CXXSystem, false); 403 break; 404 case llvm::Triple::Minix: 405 AddGnuCPlusPlusIncludePaths("/usr/gnu/include/c++/4.4.3", 406 "", "", "", triple); 407 break; 408 default: 409 break; 410 } 411 } 412 413 void InitHeaderSearch::AddDefaultIncludePaths(const LangOptions &Lang, 414 const llvm::Triple &triple, 415 const HeaderSearchOptions &HSOpts) { 416 // NB: This code path is going away. All of the logic is moving into the 417 // driver which has the information necessary to do target-specific 418 // selections of default include paths. Each target which moves there will be 419 // exempted from this logic here until we can delete the entire pile of code. 420 switch (triple.getOS()) { 421 default: 422 break; // Everything else continues to use this routine's logic. 423 424 case llvm::Triple::Emscripten: 425 case llvm::Triple::Linux: 426 case llvm::Triple::Hurd: 427 case llvm::Triple::Solaris: 428 case llvm::Triple::WASI: 429 return; 430 431 case llvm::Triple::Win32: 432 if (triple.getEnvironment() != llvm::Triple::Cygnus || 433 triple.isOSBinFormatMachO()) 434 return; 435 break; 436 437 case llvm::Triple::UnknownOS: 438 if (triple.getArch() == llvm::Triple::wasm32 || 439 triple.getArch() == llvm::Triple::wasm64) 440 return; 441 break; 442 } 443 444 // All header search logic is handled in the Driver for Darwin. 445 if (triple.isOSDarwin()) { 446 if (HSOpts.UseStandardSystemIncludes) { 447 // Add the default framework include paths on Darwin. 448 AddPath("/System/Library/Frameworks", System, true); 449 AddPath("/Library/Frameworks", System, true); 450 } 451 return; 452 } 453 454 if (Lang.CPlusPlus && !Lang.AsmPreprocessor && 455 HSOpts.UseStandardCXXIncludes && HSOpts.UseStandardSystemIncludes) { 456 if (HSOpts.UseLibcxx) { 457 AddPath("/usr/include/c++/v1", CXXSystem, false); 458 } else { 459 AddDefaultCPlusPlusIncludePaths(Lang, triple, HSOpts); 460 } 461 } 462 463 AddDefaultCIncludePaths(triple, HSOpts); 464 } 465 466 /// RemoveDuplicates - If there are duplicate directory entries in the specified 467 /// search list, remove the later (dead) ones. Returns the number of non-system 468 /// headers removed, which is used to update NumAngled. 469 static unsigned RemoveDuplicates(std::vector<DirectoryLookup> &SearchList, 470 unsigned First, bool Verbose) { 471 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenDirs; 472 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenFrameworkDirs; 473 llvm::SmallPtrSet<const HeaderMap *, 8> SeenHeaderMaps; 474 unsigned NonSystemRemoved = 0; 475 for (unsigned i = First; i != SearchList.size(); ++i) { 476 unsigned DirToRemove = i; 477 478 const DirectoryLookup &CurEntry = SearchList[i]; 479 480 if (CurEntry.isNormalDir()) { 481 // If this isn't the first time we've seen this dir, remove it. 482 if (SeenDirs.insert(CurEntry.getDir()).second) 483 continue; 484 } else if (CurEntry.isFramework()) { 485 // If this isn't the first time we've seen this framework dir, remove it. 486 if (SeenFrameworkDirs.insert(CurEntry.getFrameworkDir()).second) 487 continue; 488 } else { 489 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?"); 490 // If this isn't the first time we've seen this headermap, remove it. 491 if (SeenHeaderMaps.insert(CurEntry.getHeaderMap()).second) 492 continue; 493 } 494 495 // If we have a normal #include dir/framework/headermap that is shadowed 496 // later in the chain by a system include location, we actually want to 497 // ignore the user's request and drop the user dir... keeping the system 498 // dir. This is weird, but required to emulate GCC's search path correctly. 499 // 500 // Since dupes of system dirs are rare, just rescan to find the original 501 // that we're nuking instead of using a DenseMap. 502 if (CurEntry.getDirCharacteristic() != SrcMgr::C_User) { 503 // Find the dir that this is the same of. 504 unsigned FirstDir; 505 for (FirstDir = First;; ++FirstDir) { 506 assert(FirstDir != i && "Didn't find dupe?"); 507 508 const DirectoryLookup &SearchEntry = SearchList[FirstDir]; 509 510 // If these are different lookup types, then they can't be the dupe. 511 if (SearchEntry.getLookupType() != CurEntry.getLookupType()) 512 continue; 513 514 bool isSame; 515 if (CurEntry.isNormalDir()) 516 isSame = SearchEntry.getDir() == CurEntry.getDir(); 517 else if (CurEntry.isFramework()) 518 isSame = SearchEntry.getFrameworkDir() == CurEntry.getFrameworkDir(); 519 else { 520 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?"); 521 isSame = SearchEntry.getHeaderMap() == CurEntry.getHeaderMap(); 522 } 523 524 if (isSame) 525 break; 526 } 527 528 // If the first dir in the search path is a non-system dir, zap it 529 // instead of the system one. 530 if (SearchList[FirstDir].getDirCharacteristic() == SrcMgr::C_User) 531 DirToRemove = FirstDir; 532 } 533 534 if (Verbose) { 535 llvm::errs() << "ignoring duplicate directory \"" 536 << CurEntry.getName() << "\"\n"; 537 if (DirToRemove != i) 538 llvm::errs() << " as it is a non-system directory that duplicates " 539 << "a system directory\n"; 540 } 541 if (DirToRemove != i) 542 ++NonSystemRemoved; 543 544 // This is reached if the current entry is a duplicate. Remove the 545 // DirToRemove (usually the current dir). 546 SearchList.erase(SearchList.begin()+DirToRemove); 547 --i; 548 } 549 return NonSystemRemoved; 550 } 551 552 553 void InitHeaderSearch::Realize(const LangOptions &Lang) { 554 // Concatenate ANGLE+SYSTEM+AFTER chains together into SearchList. 555 std::vector<DirectoryLookup> SearchList; 556 SearchList.reserve(IncludePath.size()); 557 558 // Quoted arguments go first. 559 for (auto &Include : IncludePath) 560 if (Include.first == Quoted) 561 SearchList.push_back(Include.second); 562 563 // Deduplicate and remember index. 564 RemoveDuplicates(SearchList, 0, Verbose); 565 unsigned NumQuoted = SearchList.size(); 566 567 for (auto &Include : IncludePath) 568 if (Include.first == Angled || Include.first == IndexHeaderMap) 569 SearchList.push_back(Include.second); 570 571 RemoveDuplicates(SearchList, NumQuoted, Verbose); 572 unsigned NumAngled = SearchList.size(); 573 574 for (auto &Include : IncludePath) 575 if (Include.first == System || Include.first == ExternCSystem || 576 (!Lang.ObjC && !Lang.CPlusPlus && Include.first == CSystem) || 577 (/*FIXME !Lang.ObjC && */ Lang.CPlusPlus && 578 Include.first == CXXSystem) || 579 (Lang.ObjC && !Lang.CPlusPlus && Include.first == ObjCSystem) || 580 (Lang.ObjC && Lang.CPlusPlus && Include.first == ObjCXXSystem)) 581 SearchList.push_back(Include.second); 582 583 for (auto &Include : IncludePath) 584 if (Include.first == After) 585 SearchList.push_back(Include.second); 586 587 // Remove duplicates across both the Angled and System directories. GCC does 588 // this and failing to remove duplicates across these two groups breaks 589 // #include_next. 590 unsigned NonSystemRemoved = RemoveDuplicates(SearchList, NumQuoted, Verbose); 591 NumAngled -= NonSystemRemoved; 592 593 bool DontSearchCurDir = false; // TODO: set to true if -I- is set? 594 Headers.SetSearchPaths(SearchList, NumQuoted, NumAngled, DontSearchCurDir); 595 596 Headers.SetSystemHeaderPrefixes(SystemHeaderPrefixes); 597 598 // If verbose, print the list of directories that will be searched. 599 if (Verbose) { 600 llvm::errs() << "#include \"...\" search starts here:\n"; 601 for (unsigned i = 0, e = SearchList.size(); i != e; ++i) { 602 if (i == NumQuoted) 603 llvm::errs() << "#include <...> search starts here:\n"; 604 StringRef Name = SearchList[i].getName(); 605 const char *Suffix; 606 if (SearchList[i].isNormalDir()) 607 Suffix = ""; 608 else if (SearchList[i].isFramework()) 609 Suffix = " (framework directory)"; 610 else { 611 assert(SearchList[i].isHeaderMap() && "Unknown DirectoryLookup"); 612 Suffix = " (headermap)"; 613 } 614 llvm::errs() << " " << Name << Suffix << "\n"; 615 } 616 llvm::errs() << "End of search list.\n"; 617 } 618 } 619 620 void clang::ApplyHeaderSearchOptions(HeaderSearch &HS, 621 const HeaderSearchOptions &HSOpts, 622 const LangOptions &Lang, 623 const llvm::Triple &Triple) { 624 InitHeaderSearch Init(HS, HSOpts.Verbose, HSOpts.Sysroot); 625 626 // Add the user defined entries. 627 for (unsigned i = 0, e = HSOpts.UserEntries.size(); i != e; ++i) { 628 const HeaderSearchOptions::Entry &E = HSOpts.UserEntries[i]; 629 if (E.IgnoreSysRoot) { 630 Init.AddUnmappedPath(E.Path, E.Group, E.IsFramework); 631 } else { 632 Init.AddPath(E.Path, E.Group, E.IsFramework); 633 } 634 } 635 636 Init.AddDefaultIncludePaths(Lang, Triple, HSOpts); 637 638 for (unsigned i = 0, e = HSOpts.SystemHeaderPrefixes.size(); i != e; ++i) 639 Init.AddSystemHeaderPrefix(HSOpts.SystemHeaderPrefixes[i].Prefix, 640 HSOpts.SystemHeaderPrefixes[i].IsSystemHeader); 641 642 if (HSOpts.UseBuiltinIncludes) { 643 // Set up the builtin include directory in the module map. 644 SmallString<128> P = StringRef(HSOpts.ResourceDir); 645 llvm::sys::path::append(P, "include"); 646 if (auto Dir = HS.getFileMgr().getDirectory(P)) 647 HS.getModuleMap().setBuiltinIncludeDir(*Dir); 648 } 649 650 Init.Realize(Lang); 651 } 652