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/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/FileSystem.h" 29 #include "llvm/Support/Path.h" 30 #include "llvm/Support/raw_ostream.h" 31 32 using namespace clang; 33 using namespace clang::frontend; 34 35 namespace { 36 37 /// InitHeaderSearch - This class makes it easier to set the search paths of 38 /// a HeaderSearch object. InitHeaderSearch stores several search path lists 39 /// internally, which can be sent to a HeaderSearch object in one swoop. 40 class InitHeaderSearch { 41 std::vector<std::pair<IncludeDirGroup, DirectoryLookup> > IncludePath; 42 typedef std::vector<std::pair<IncludeDirGroup, 43 DirectoryLookup> >::const_iterator path_iterator; 44 std::vector<std::pair<std::string, bool> > SystemHeaderPrefixes; 45 HeaderSearch &Headers; 46 bool Verbose; 47 std::string IncludeSysroot; 48 bool HasSysroot; 49 50 public: 51 52 InitHeaderSearch(HeaderSearch &HS, bool verbose, StringRef sysroot) 53 : Headers(HS), Verbose(verbose), IncludeSysroot(sysroot), 54 HasSysroot(!(sysroot.empty() || sysroot == "/")) { 55 } 56 57 /// AddPath - Add the specified path to the specified group list, prefixing 58 /// the sysroot if used. 59 void 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 void AddUnmappedPath(const Twine &Path, IncludeDirGroup Group, 64 bool isFramework); 65 66 /// AddSystemHeaderPrefix - Add the specified prefix to the system header 67 /// prefix list. 68 void AddSystemHeaderPrefix(StringRef Prefix, bool IsSystemHeader) { 69 SystemHeaderPrefixes.emplace_back(Prefix, IsSystemHeader); 70 } 71 72 /// AddGnuCPlusPlusIncludePaths - Add the necessary paths to support a gnu 73 /// libstdc++. 74 void AddGnuCPlusPlusIncludePaths(StringRef Base, 75 StringRef ArchDir, 76 StringRef Dir32, 77 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 llvm::Triple &triple, 93 const HeaderSearchOptions &HSOpts); 94 95 /// AddDefaultSystemIncludePaths - Adds the default system include paths so 96 /// that e.g. stdio.h is found. 97 void AddDefaultIncludePaths(const LangOptions &Lang, 98 const llvm::Triple &triple, 99 const HeaderSearchOptions &HSOpts); 100 101 /// Realize - Merges all search path lists into one list and send it to 102 /// HeaderSearch. 103 void Realize(const LangOptions &Lang); 104 }; 105 106 } // end anonymous namespace. 107 108 static bool CanPrefixSysroot(StringRef Path) { 109 #if defined(LLVM_ON_WIN32) 110 return !Path.empty() && llvm::sys::path::is_separator(Path[0]); 111 #else 112 return llvm::sys::path::is_absolute(Path); 113 #endif 114 } 115 116 void InitHeaderSearch::AddPath(const Twine &Path, IncludeDirGroup Group, 117 bool isFramework) { 118 // Add the path with sysroot prepended, if desired and this is a system header 119 // group. 120 if (HasSysroot) { 121 SmallString<256> MappedPathStorage; 122 StringRef MappedPathStr = Path.toStringRef(MappedPathStorage); 123 if (CanPrefixSysroot(MappedPathStr)) { 124 AddUnmappedPath(IncludeSysroot + Path, Group, isFramework); 125 return; 126 } 127 } 128 129 AddUnmappedPath(Path, Group, isFramework); 130 } 131 132 void 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 // Compute the DirectoryLookup type. 141 SrcMgr::CharacteristicKind Type; 142 if (Group == Quoted || Group == Angled || Group == IndexHeaderMap) { 143 Type = SrcMgr::C_User; 144 } else if (Group == ExternCSystem) { 145 Type = SrcMgr::C_ExternCSystem; 146 } else { 147 Type = SrcMgr::C_System; 148 } 149 150 // If the directory exists, add it. 151 if (const DirectoryEntry *DE = FM.getDirectory(MappedPathStr)) { 152 IncludePath.push_back( 153 std::make_pair(Group, DirectoryLookup(DE, Type, isFramework))); 154 return; 155 } 156 157 // Check to see if this is an apple-style headermap (which are not allowed to 158 // be frameworks). 159 if (!isFramework) { 160 if (const FileEntry *FE = FM.getFile(MappedPathStr)) { 161 if (const HeaderMap *HM = Headers.CreateHeaderMap(FE)) { 162 // It is a headermap, add it to the search path. 163 IncludePath.push_back( 164 std::make_pair(Group, 165 DirectoryLookup(HM, Type, Group == IndexHeaderMap))); 166 return; 167 } 168 } 169 } 170 171 if (Verbose) 172 llvm::errs() << "ignoring nonexistent directory \"" 173 << MappedPathStr << "\"\n"; 174 } 175 176 void InitHeaderSearch::AddGnuCPlusPlusIncludePaths(StringRef Base, 177 StringRef ArchDir, 178 StringRef Dir32, 179 StringRef Dir64, 180 const llvm::Triple &triple) { 181 // Add the base dir 182 AddPath(Base, CXXSystem, false); 183 184 // Add the multilib dirs 185 llvm::Triple::ArchType arch = triple.getArch(); 186 bool is64bit = arch == llvm::Triple::ppc64 || arch == llvm::Triple::x86_64; 187 if (is64bit) 188 AddPath(Base + "/" + ArchDir + "/" + Dir64, CXXSystem, false); 189 else 190 AddPath(Base + "/" + ArchDir + "/" + Dir32, CXXSystem, false); 191 192 // Add the backward dir 193 AddPath(Base + "/backward", CXXSystem, false); 194 } 195 196 void InitHeaderSearch::AddMinGWCPlusPlusIncludePaths(StringRef Base, 197 StringRef Arch, 198 StringRef Version) { 199 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++", 200 CXXSystem, false); 201 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/" + Arch, 202 CXXSystem, false); 203 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/backward", 204 CXXSystem, false); 205 } 206 207 void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple, 208 const HeaderSearchOptions &HSOpts) { 209 llvm::Triple::OSType os = triple.getOS(); 210 211 if (HSOpts.UseStandardSystemIncludes) { 212 switch (os) { 213 case llvm::Triple::CloudABI: 214 case llvm::Triple::FreeBSD: 215 case llvm::Triple::NetBSD: 216 case llvm::Triple::OpenBSD: 217 case llvm::Triple::Bitrig: 218 case llvm::Triple::NaCl: 219 case llvm::Triple::PS4: 220 case llvm::Triple::ELFIAMCU: 221 break; 222 case llvm::Triple::Win32: 223 if (triple.getEnvironment() != llvm::Triple::Cygnus) 224 break; 225 default: 226 // FIXME: temporary hack: hard-coded paths. 227 AddPath("/usr/local/include", System, false); 228 break; 229 } 230 } 231 232 // Builtin includes use #include_next directives and should be positioned 233 // just prior C include dirs. 234 if (HSOpts.UseBuiltinIncludes) { 235 // Ignore the sys root, we *always* look for clang headers relative to 236 // supplied path. 237 SmallString<128> P = StringRef(HSOpts.ResourceDir); 238 llvm::sys::path::append(P, "include"); 239 AddUnmappedPath(P, ExternCSystem, false); 240 } 241 242 // All remaining additions are for system include directories, early exit if 243 // we aren't using them. 244 if (!HSOpts.UseStandardSystemIncludes) 245 return; 246 247 // Add dirs specified via 'configure --with-c-include-dirs'. 248 StringRef CIncludeDirs(C_INCLUDE_DIRS); 249 if (CIncludeDirs != "") { 250 SmallVector<StringRef, 5> dirs; 251 CIncludeDirs.split(dirs, ":"); 252 for (StringRef dir : dirs) 253 AddPath(dir, ExternCSystem, false); 254 return; 255 } 256 257 switch (os) { 258 case llvm::Triple::Linux: 259 llvm_unreachable("Include management is handled in the driver."); 260 261 case llvm::Triple::CloudABI: { 262 // <sysroot>/<triple>/include 263 SmallString<128> P = StringRef(HSOpts.ResourceDir); 264 llvm::sys::path::append(P, "../../..", triple.str(), "include"); 265 AddPath(P, System, false); 266 break; 267 } 268 269 case llvm::Triple::Haiku: 270 AddPath("/boot/common/include", System, false); 271 AddPath("/boot/develop/headers/os", System, false); 272 AddPath("/boot/develop/headers/os/app", System, false); 273 AddPath("/boot/develop/headers/os/arch", System, false); 274 AddPath("/boot/develop/headers/os/device", System, false); 275 AddPath("/boot/develop/headers/os/drivers", System, false); 276 AddPath("/boot/develop/headers/os/game", System, false); 277 AddPath("/boot/develop/headers/os/interface", System, false); 278 AddPath("/boot/develop/headers/os/kernel", System, false); 279 AddPath("/boot/develop/headers/os/locale", System, false); 280 AddPath("/boot/develop/headers/os/mail", System, false); 281 AddPath("/boot/develop/headers/os/media", System, false); 282 AddPath("/boot/develop/headers/os/midi", System, false); 283 AddPath("/boot/develop/headers/os/midi2", System, false); 284 AddPath("/boot/develop/headers/os/net", System, false); 285 AddPath("/boot/develop/headers/os/storage", System, false); 286 AddPath("/boot/develop/headers/os/support", System, false); 287 AddPath("/boot/develop/headers/os/translation", System, false); 288 AddPath("/boot/develop/headers/os/add-ons/graphics", System, false); 289 AddPath("/boot/develop/headers/os/add-ons/input_server", System, false); 290 AddPath("/boot/develop/headers/os/add-ons/screen_saver", System, false); 291 AddPath("/boot/develop/headers/os/add-ons/tracker", System, false); 292 AddPath("/boot/develop/headers/os/be_apps/Deskbar", System, false); 293 AddPath("/boot/develop/headers/os/be_apps/NetPositive", System, false); 294 AddPath("/boot/develop/headers/os/be_apps/Tracker", System, false); 295 AddPath("/boot/develop/headers/cpp", System, false); 296 AddPath("/boot/develop/headers/cpp/i586-pc-haiku", System, false); 297 AddPath("/boot/develop/headers/3rdparty", System, false); 298 AddPath("/boot/develop/headers/bsd", System, false); 299 AddPath("/boot/develop/headers/glibc", System, false); 300 AddPath("/boot/develop/headers/posix", System, false); 301 AddPath("/boot/develop/headers", System, false); 302 break; 303 case llvm::Triple::RTEMS: 304 break; 305 case llvm::Triple::Win32: 306 switch (triple.getEnvironment()) { 307 default: llvm_unreachable("Include management is handled in the driver."); 308 case llvm::Triple::Cygnus: 309 AddPath("/usr/include/w32api", System, false); 310 break; 311 case llvm::Triple::GNU: 312 break; 313 } 314 break; 315 default: 316 break; 317 } 318 319 switch (os) { 320 case llvm::Triple::CloudABI: 321 case llvm::Triple::RTEMS: 322 case llvm::Triple::NaCl: 323 case llvm::Triple::ELFIAMCU: 324 break; 325 case llvm::Triple::PS4: { 326 // <isysroot> gets prepended later in AddPath(). 327 std::string BaseSDKPath = ""; 328 if (!HasSysroot) { 329 const char *envValue = getenv("SCE_PS4_SDK_DIR"); 330 if (envValue) 331 BaseSDKPath = envValue; 332 else { 333 // HSOpts.ResourceDir variable contains the location of Clang's 334 // resource files. 335 // Assuming that Clang is configured for PS4 without 336 // --with-clang-resource-dir option, the location of Clang's resource 337 // files is <SDK_DIR>/host_tools/lib/clang 338 SmallString<128> P = StringRef(HSOpts.ResourceDir); 339 llvm::sys::path::append(P, "../../.."); 340 BaseSDKPath = P.str(); 341 } 342 } 343 AddPath(BaseSDKPath + "/target/include", System, false); 344 if (triple.isPS4CPU()) 345 AddPath(BaseSDKPath + "/target/include_common", System, false); 346 } 347 default: 348 AddPath("/usr/include", ExternCSystem, false); 349 break; 350 } 351 } 352 353 void InitHeaderSearch:: 354 AddDefaultCPlusPlusIncludePaths(const llvm::Triple &triple, const HeaderSearchOptions &HSOpts) { 355 llvm::Triple::OSType os = triple.getOS(); 356 // FIXME: temporary hack: hard-coded paths. 357 358 if (triple.isOSDarwin()) { 359 switch (triple.getArch()) { 360 default: break; 361 362 case llvm::Triple::ppc: 363 case llvm::Triple::ppc64: 364 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 365 "powerpc-apple-darwin10", "", "ppc64", 366 triple); 367 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.0.0", 368 "powerpc-apple-darwin10", "", "ppc64", 369 triple); 370 break; 371 372 case llvm::Triple::x86: 373 case llvm::Triple::x86_64: 374 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 375 "i686-apple-darwin10", "", "x86_64", triple); 376 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.0.0", 377 "i686-apple-darwin8", "", "", triple); 378 break; 379 380 case llvm::Triple::arm: 381 case llvm::Triple::thumb: 382 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 383 "arm-apple-darwin10", "v7", "", triple); 384 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 385 "arm-apple-darwin10", "v6", "", triple); 386 break; 387 388 case llvm::Triple::aarch64: 389 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 390 "arm64-apple-darwin10", "", "", triple); 391 break; 392 } 393 return; 394 } 395 396 switch (os) { 397 case llvm::Triple::Linux: 398 llvm_unreachable("Include management is handled in the driver."); 399 break; 400 case llvm::Triple::Win32: 401 switch (triple.getEnvironment()) { 402 default: llvm_unreachable("Include management is handled in the driver."); 403 case llvm::Triple::Cygnus: 404 // Cygwin-1.7 405 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.7.3"); 406 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.5.3"); 407 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.4"); 408 // g++-4 / Cygwin-1.5 409 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.2"); 410 break; 411 } 412 break; 413 case llvm::Triple::DragonFly: 414 AddPath("/usr/include/c++/5.0", CXXSystem, false); 415 break; 416 case llvm::Triple::OpenBSD: { 417 std::string t = triple.getTriple(); 418 if (t.substr(0, 6) == "x86_64") 419 t.replace(0, 6, "amd64"); 420 AddGnuCPlusPlusIncludePaths("/usr/include/g++", 421 t, "", "", triple); 422 break; 423 } 424 case llvm::Triple::Minix: 425 AddGnuCPlusPlusIncludePaths("/usr/gnu/include/c++/4.4.3", 426 "", "", "", triple); 427 break; 428 default: 429 break; 430 } 431 } 432 433 void InitHeaderSearch::AddDefaultIncludePaths(const LangOptions &Lang, 434 const llvm::Triple &triple, 435 const HeaderSearchOptions &HSOpts) { 436 // NB: This code path is going away. All of the logic is moving into the 437 // driver which has the information necessary to do target-specific 438 // selections of default include paths. Each target which moves there will be 439 // exempted from this logic here until we can delete the entire pile of code. 440 switch (triple.getOS()) { 441 default: 442 break; // Everything else continues to use this routine's logic. 443 444 case llvm::Triple::Linux: 445 return; 446 447 case llvm::Triple::Win32: 448 if (triple.getEnvironment() != llvm::Triple::Cygnus || 449 triple.isOSBinFormatMachO()) 450 return; 451 break; 452 } 453 454 if (Lang.CPlusPlus && HSOpts.UseStandardCXXIncludes && 455 HSOpts.UseStandardSystemIncludes) { 456 if (HSOpts.UseLibcxx) { 457 if (triple.isOSDarwin()) { 458 // On Darwin, libc++ may be installed alongside the compiler in 459 // include/c++/v1. 460 if (!HSOpts.ResourceDir.empty()) { 461 // Remove version from foo/lib/clang/version 462 StringRef NoVer = llvm::sys::path::parent_path(HSOpts.ResourceDir); 463 // Remove clang from foo/lib/clang 464 StringRef Lib = llvm::sys::path::parent_path(NoVer); 465 // Remove lib from foo/lib 466 SmallString<128> P = llvm::sys::path::parent_path(Lib); 467 468 // Get foo/include/c++/v1 469 llvm::sys::path::append(P, "include", "c++", "v1"); 470 AddUnmappedPath(P, CXXSystem, false); 471 } 472 } 473 AddPath("/usr/include/c++/v1", CXXSystem, false); 474 } else { 475 AddDefaultCPlusPlusIncludePaths(triple, HSOpts); 476 } 477 } 478 479 AddDefaultCIncludePaths(triple, HSOpts); 480 481 // Add the default framework include paths on Darwin. 482 if (HSOpts.UseStandardSystemIncludes) { 483 if (triple.isOSDarwin()) { 484 AddPath("/System/Library/Frameworks", System, true); 485 AddPath("/Library/Frameworks", System, true); 486 } 487 } 488 } 489 490 /// RemoveDuplicates - If there are duplicate directory entries in the specified 491 /// search list, remove the later (dead) ones. Returns the number of non-system 492 /// headers removed, which is used to update NumAngled. 493 static unsigned RemoveDuplicates(std::vector<DirectoryLookup> &SearchList, 494 unsigned First, bool Verbose) { 495 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenDirs; 496 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenFrameworkDirs; 497 llvm::SmallPtrSet<const HeaderMap *, 8> SeenHeaderMaps; 498 unsigned NonSystemRemoved = 0; 499 for (unsigned i = First; i != SearchList.size(); ++i) { 500 unsigned DirToRemove = i; 501 502 const DirectoryLookup &CurEntry = SearchList[i]; 503 504 if (CurEntry.isNormalDir()) { 505 // If this isn't the first time we've seen this dir, remove it. 506 if (SeenDirs.insert(CurEntry.getDir()).second) 507 continue; 508 } else if (CurEntry.isFramework()) { 509 // If this isn't the first time we've seen this framework dir, remove it. 510 if (SeenFrameworkDirs.insert(CurEntry.getFrameworkDir()).second) 511 continue; 512 } else { 513 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?"); 514 // If this isn't the first time we've seen this headermap, remove it. 515 if (SeenHeaderMaps.insert(CurEntry.getHeaderMap()).second) 516 continue; 517 } 518 519 // If we have a normal #include dir/framework/headermap that is shadowed 520 // later in the chain by a system include location, we actually want to 521 // ignore the user's request and drop the user dir... keeping the system 522 // dir. This is weird, but required to emulate GCC's search path correctly. 523 // 524 // Since dupes of system dirs are rare, just rescan to find the original 525 // that we're nuking instead of using a DenseMap. 526 if (CurEntry.getDirCharacteristic() != SrcMgr::C_User) { 527 // Find the dir that this is the same of. 528 unsigned FirstDir; 529 for (FirstDir = 0; ; ++FirstDir) { 530 assert(FirstDir != i && "Didn't find dupe?"); 531 532 const DirectoryLookup &SearchEntry = SearchList[FirstDir]; 533 534 // If these are different lookup types, then they can't be the dupe. 535 if (SearchEntry.getLookupType() != CurEntry.getLookupType()) 536 continue; 537 538 bool isSame; 539 if (CurEntry.isNormalDir()) 540 isSame = SearchEntry.getDir() == CurEntry.getDir(); 541 else if (CurEntry.isFramework()) 542 isSame = SearchEntry.getFrameworkDir() == CurEntry.getFrameworkDir(); 543 else { 544 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?"); 545 isSame = SearchEntry.getHeaderMap() == CurEntry.getHeaderMap(); 546 } 547 548 if (isSame) 549 break; 550 } 551 552 // If the first dir in the search path is a non-system dir, zap it 553 // instead of the system one. 554 if (SearchList[FirstDir].getDirCharacteristic() == SrcMgr::C_User) 555 DirToRemove = FirstDir; 556 } 557 558 if (Verbose) { 559 llvm::errs() << "ignoring duplicate directory \"" 560 << CurEntry.getName() << "\"\n"; 561 if (DirToRemove != i) 562 llvm::errs() << " as it is a non-system directory that duplicates " 563 << "a system directory\n"; 564 } 565 if (DirToRemove != i) 566 ++NonSystemRemoved; 567 568 // This is reached if the current entry is a duplicate. Remove the 569 // DirToRemove (usually the current dir). 570 SearchList.erase(SearchList.begin()+DirToRemove); 571 --i; 572 } 573 return NonSystemRemoved; 574 } 575 576 577 void InitHeaderSearch::Realize(const LangOptions &Lang) { 578 // Concatenate ANGLE+SYSTEM+AFTER chains together into SearchList. 579 std::vector<DirectoryLookup> SearchList; 580 SearchList.reserve(IncludePath.size()); 581 582 // Quoted arguments go first. 583 for (auto &Include : IncludePath) 584 if (Include.first == Quoted) 585 SearchList.push_back(Include.second); 586 587 // Deduplicate and remember index. 588 RemoveDuplicates(SearchList, 0, Verbose); 589 unsigned NumQuoted = SearchList.size(); 590 591 for (auto &Include : IncludePath) 592 if (Include.first == Angled || Include.first == IndexHeaderMap) 593 SearchList.push_back(Include.second); 594 595 RemoveDuplicates(SearchList, NumQuoted, Verbose); 596 unsigned NumAngled = SearchList.size(); 597 598 for (auto &Include : IncludePath) 599 if (Include.first == System || Include.first == ExternCSystem || 600 (!Lang.ObjC1 && !Lang.CPlusPlus && Include.first == CSystem) || 601 (/*FIXME !Lang.ObjC1 && */ Lang.CPlusPlus && 602 Include.first == CXXSystem) || 603 (Lang.ObjC1 && !Lang.CPlusPlus && Include.first == ObjCSystem) || 604 (Lang.ObjC1 && Lang.CPlusPlus && Include.first == ObjCXXSystem)) 605 SearchList.push_back(Include.second); 606 607 for (auto &Include : IncludePath) 608 if (Include.first == After) 609 SearchList.push_back(Include.second); 610 611 // Remove duplicates across both the Angled and System directories. GCC does 612 // this and failing to remove duplicates across these two groups breaks 613 // #include_next. 614 unsigned NonSystemRemoved = RemoveDuplicates(SearchList, NumQuoted, Verbose); 615 NumAngled -= NonSystemRemoved; 616 617 bool DontSearchCurDir = false; // TODO: set to true if -I- is set? 618 Headers.SetSearchPaths(SearchList, NumQuoted, NumAngled, DontSearchCurDir); 619 620 Headers.SetSystemHeaderPrefixes(SystemHeaderPrefixes); 621 622 // If verbose, print the list of directories that will be searched. 623 if (Verbose) { 624 llvm::errs() << "#include \"...\" search starts here:\n"; 625 for (unsigned i = 0, e = SearchList.size(); i != e; ++i) { 626 if (i == NumQuoted) 627 llvm::errs() << "#include <...> search starts here:\n"; 628 const char *Name = SearchList[i].getName(); 629 const char *Suffix; 630 if (SearchList[i].isNormalDir()) 631 Suffix = ""; 632 else if (SearchList[i].isFramework()) 633 Suffix = " (framework directory)"; 634 else { 635 assert(SearchList[i].isHeaderMap() && "Unknown DirectoryLookup"); 636 Suffix = " (headermap)"; 637 } 638 llvm::errs() << " " << Name << Suffix << "\n"; 639 } 640 llvm::errs() << "End of search list.\n"; 641 } 642 } 643 644 void clang::ApplyHeaderSearchOptions(HeaderSearch &HS, 645 const HeaderSearchOptions &HSOpts, 646 const LangOptions &Lang, 647 const llvm::Triple &Triple) { 648 InitHeaderSearch Init(HS, HSOpts.Verbose, HSOpts.Sysroot); 649 650 // Add the user defined entries. 651 for (unsigned i = 0, e = HSOpts.UserEntries.size(); i != e; ++i) { 652 const HeaderSearchOptions::Entry &E = HSOpts.UserEntries[i]; 653 if (E.IgnoreSysRoot) { 654 Init.AddUnmappedPath(E.Path, E.Group, E.IsFramework); 655 } else { 656 Init.AddPath(E.Path, E.Group, E.IsFramework); 657 } 658 } 659 660 Init.AddDefaultIncludePaths(Lang, Triple, HSOpts); 661 662 for (unsigned i = 0, e = HSOpts.SystemHeaderPrefixes.size(); i != e; ++i) 663 Init.AddSystemHeaderPrefix(HSOpts.SystemHeaderPrefixes[i].Prefix, 664 HSOpts.SystemHeaderPrefixes[i].IsSystemHeader); 665 666 if (HSOpts.UseBuiltinIncludes) { 667 // Set up the builtin include directory in the module map. 668 SmallString<128> P = StringRef(HSOpts.ResourceDir); 669 llvm::sys::path::append(P, "include"); 670 if (const DirectoryEntry *Dir = HS.getFileMgr().getDirectory(P)) 671 HS.getModuleMap().setBuiltinIncludeDir(Dir); 672 } 673 674 Init.Realize(Lang); 675 } 676