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/FileSystem.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 void AddPath(const Twine &Path, IncludeDirGroup Group, bool isFramework); 59 60 /// AddUnmappedPath - Add the specified path to the specified group list, 61 /// without performing any sysroot remapping. 62 void AddUnmappedPath(const Twine &Path, IncludeDirGroup Group, 63 bool isFramework); 64 65 /// AddSystemHeaderPrefix - Add the specified prefix to the system header 66 /// prefix list. 67 void AddSystemHeaderPrefix(StringRef Prefix, bool IsSystemHeader) { 68 SystemHeaderPrefixes.emplace_back(Prefix, IsSystemHeader); 69 } 70 71 /// AddGnuCPlusPlusIncludePaths - Add the necessary paths to support a gnu 72 /// libstdc++. 73 void AddGnuCPlusPlusIncludePaths(StringRef Base, 74 StringRef ArchDir, 75 StringRef Dir32, 76 StringRef Dir64, 77 const llvm::Triple &triple); 78 79 /// AddMinGWCPlusPlusIncludePaths - Add the necessary paths to support a MinGW 80 /// libstdc++. 81 void AddMinGWCPlusPlusIncludePaths(StringRef Base, 82 StringRef Arch, 83 StringRef Version); 84 85 // AddDefaultCIncludePaths - Add paths that should always be searched. 86 void AddDefaultCIncludePaths(const llvm::Triple &triple, 87 const HeaderSearchOptions &HSOpts); 88 89 // AddDefaultCPlusPlusIncludePaths - Add paths that should be searched when 90 // compiling c++. 91 void AddDefaultCPlusPlusIncludePaths(const llvm::Triple &triple, 92 const HeaderSearchOptions &HSOpts); 93 94 /// AddDefaultSystemIncludePaths - Adds the default system include paths so 95 /// that e.g. stdio.h is found. 96 void AddDefaultIncludePaths(const LangOptions &Lang, 97 const llvm::Triple &triple, 98 const HeaderSearchOptions &HSOpts); 99 100 /// Realize - Merges all search path lists into one list and send it to 101 /// HeaderSearch. 102 void Realize(const LangOptions &Lang); 103 }; 104 105 } // end anonymous namespace. 106 107 static bool CanPrefixSysroot(StringRef Path) { 108 #if defined(LLVM_ON_WIN32) 109 return !Path.empty() && llvm::sys::path::is_separator(Path[0]); 110 #else 111 return llvm::sys::path::is_absolute(Path); 112 #endif 113 } 114 115 void InitHeaderSearch::AddPath(const Twine &Path, IncludeDirGroup Group, 116 bool isFramework) { 117 // Add the path with sysroot prepended, if desired and this is a system header 118 // group. 119 if (HasSysroot) { 120 SmallString<256> MappedPathStorage; 121 StringRef MappedPathStr = Path.toStringRef(MappedPathStorage); 122 if (CanPrefixSysroot(MappedPathStr)) { 123 AddUnmappedPath(IncludeSysroot + Path, Group, isFramework); 124 return; 125 } 126 } 127 128 AddUnmappedPath(Path, Group, isFramework); 129 } 130 131 void InitHeaderSearch::AddUnmappedPath(const Twine &Path, IncludeDirGroup Group, 132 bool isFramework) { 133 assert(!Path.isTriviallyEmpty() && "can't handle empty path here"); 134 135 FileManager &FM = Headers.getFileMgr(); 136 SmallString<256> MappedPathStorage; 137 StringRef MappedPathStr = Path.toStringRef(MappedPathStorage); 138 139 // Compute the DirectoryLookup type. 140 SrcMgr::CharacteristicKind Type; 141 if (Group == Quoted || Group == Angled || Group == IndexHeaderMap) { 142 Type = SrcMgr::C_User; 143 } else if (Group == ExternCSystem) { 144 Type = SrcMgr::C_ExternCSystem; 145 } else { 146 Type = SrcMgr::C_System; 147 } 148 149 // If the directory exists, add it. 150 if (const DirectoryEntry *DE = FM.getDirectory(MappedPathStr)) { 151 IncludePath.push_back( 152 std::make_pair(Group, DirectoryLookup(DE, Type, isFramework))); 153 return; 154 } 155 156 // Check to see if this is an apple-style headermap (which are not allowed to 157 // be frameworks). 158 if (!isFramework) { 159 if (const FileEntry *FE = FM.getFile(MappedPathStr)) { 160 if (const HeaderMap *HM = Headers.CreateHeaderMap(FE)) { 161 // It is a headermap, add it to the search path. 162 IncludePath.push_back( 163 std::make_pair(Group, 164 DirectoryLookup(HM, Type, Group == IndexHeaderMap))); 165 return; 166 } 167 } 168 } 169 170 if (Verbose) 171 llvm::errs() << "ignoring nonexistent directory \"" 172 << MappedPathStr << "\"\n"; 173 } 174 175 void InitHeaderSearch::AddGnuCPlusPlusIncludePaths(StringRef Base, 176 StringRef ArchDir, 177 StringRef Dir32, 178 StringRef Dir64, 179 const llvm::Triple &triple) { 180 // Add the base dir 181 AddPath(Base, CXXSystem, false); 182 183 // Add the multilib dirs 184 llvm::Triple::ArchType arch = triple.getArch(); 185 bool is64bit = arch == llvm::Triple::ppc64 || arch == llvm::Triple::x86_64; 186 if (is64bit) 187 AddPath(Base + "/" + ArchDir + "/" + Dir64, CXXSystem, false); 188 else 189 AddPath(Base + "/" + ArchDir + "/" + Dir32, CXXSystem, false); 190 191 // Add the backward dir 192 AddPath(Base + "/backward", CXXSystem, false); 193 } 194 195 void InitHeaderSearch::AddMinGWCPlusPlusIncludePaths(StringRef Base, 196 StringRef Arch, 197 StringRef Version) { 198 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++", 199 CXXSystem, false); 200 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/" + Arch, 201 CXXSystem, false); 202 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/backward", 203 CXXSystem, false); 204 } 205 206 void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple, 207 const HeaderSearchOptions &HSOpts) { 208 llvm::Triple::OSType os = triple.getOS(); 209 210 if (HSOpts.UseStandardSystemIncludes) { 211 switch (os) { 212 case llvm::Triple::CloudABI: 213 case llvm::Triple::FreeBSD: 214 case llvm::Triple::NetBSD: 215 case llvm::Triple::OpenBSD: 216 case llvm::Triple::Bitrig: 217 case llvm::Triple::NaCl: 218 case llvm::Triple::PS4: 219 case llvm::Triple::ELFIAMCU: 220 break; 221 case llvm::Triple::Win32: 222 if (triple.getEnvironment() != llvm::Triple::Cygnus) 223 break; 224 default: 225 // FIXME: temporary hack: hard-coded paths. 226 AddPath("/usr/local/include", System, false); 227 break; 228 } 229 } 230 231 // Builtin includes use #include_next directives and should be positioned 232 // just prior C include dirs. 233 if (HSOpts.UseBuiltinIncludes) { 234 // Ignore the sys root, we *always* look for clang headers relative to 235 // supplied path. 236 SmallString<128> P = StringRef(HSOpts.ResourceDir); 237 llvm::sys::path::append(P, "include"); 238 AddUnmappedPath(P, ExternCSystem, false); 239 } 240 241 // All remaining additions are for system include directories, early exit if 242 // we aren't using them. 243 if (!HSOpts.UseStandardSystemIncludes) 244 return; 245 246 // Add dirs specified via 'configure --with-c-include-dirs'. 247 StringRef CIncludeDirs(C_INCLUDE_DIRS); 248 if (CIncludeDirs != "") { 249 SmallVector<StringRef, 5> dirs; 250 CIncludeDirs.split(dirs, ":"); 251 for (StringRef dir : dirs) 252 AddPath(dir, ExternCSystem, false); 253 return; 254 } 255 256 switch (os) { 257 case llvm::Triple::Linux: 258 llvm_unreachable("Include management is handled in the driver."); 259 260 case llvm::Triple::CloudABI: { 261 // <sysroot>/<triple>/include 262 SmallString<128> P = StringRef(HSOpts.ResourceDir); 263 llvm::sys::path::append(P, "../../..", triple.str(), "include"); 264 AddPath(P, System, false); 265 break; 266 } 267 268 case llvm::Triple::Haiku: 269 AddPath("/boot/common/include", System, false); 270 AddPath("/boot/develop/headers/os", System, false); 271 AddPath("/boot/develop/headers/os/app", System, false); 272 AddPath("/boot/develop/headers/os/arch", System, false); 273 AddPath("/boot/develop/headers/os/device", System, false); 274 AddPath("/boot/develop/headers/os/drivers", System, false); 275 AddPath("/boot/develop/headers/os/game", System, false); 276 AddPath("/boot/develop/headers/os/interface", System, false); 277 AddPath("/boot/develop/headers/os/kernel", System, false); 278 AddPath("/boot/develop/headers/os/locale", System, false); 279 AddPath("/boot/develop/headers/os/mail", System, false); 280 AddPath("/boot/develop/headers/os/media", System, false); 281 AddPath("/boot/develop/headers/os/midi", System, false); 282 AddPath("/boot/develop/headers/os/midi2", System, false); 283 AddPath("/boot/develop/headers/os/net", System, false); 284 AddPath("/boot/develop/headers/os/storage", System, false); 285 AddPath("/boot/develop/headers/os/support", System, false); 286 AddPath("/boot/develop/headers/os/translation", System, false); 287 AddPath("/boot/develop/headers/os/add-ons/graphics", System, false); 288 AddPath("/boot/develop/headers/os/add-ons/input_server", System, false); 289 AddPath("/boot/develop/headers/os/add-ons/screen_saver", System, false); 290 AddPath("/boot/develop/headers/os/add-ons/tracker", System, false); 291 AddPath("/boot/develop/headers/os/be_apps/Deskbar", System, false); 292 AddPath("/boot/develop/headers/os/be_apps/NetPositive", System, false); 293 AddPath("/boot/develop/headers/os/be_apps/Tracker", System, false); 294 AddPath("/boot/develop/headers/cpp", System, false); 295 AddPath("/boot/develop/headers/cpp/i586-pc-haiku", System, false); 296 AddPath("/boot/develop/headers/3rdparty", System, false); 297 AddPath("/boot/develop/headers/bsd", System, false); 298 AddPath("/boot/develop/headers/glibc", System, false); 299 AddPath("/boot/develop/headers/posix", System, false); 300 AddPath("/boot/develop/headers", System, false); 301 break; 302 case llvm::Triple::RTEMS: 303 break; 304 case llvm::Triple::Win32: 305 switch (triple.getEnvironment()) { 306 default: llvm_unreachable("Include management is handled in the driver."); 307 case llvm::Triple::Cygnus: 308 AddPath("/usr/include/w32api", System, false); 309 break; 310 case llvm::Triple::GNU: 311 break; 312 } 313 break; 314 default: 315 break; 316 } 317 318 switch (os) { 319 case llvm::Triple::CloudABI: 320 case llvm::Triple::RTEMS: 321 case llvm::Triple::NaCl: 322 case llvm::Triple::ELFIAMCU: 323 break; 324 case llvm::Triple::PS4: { 325 // <isysroot> gets prepended later in AddPath(). 326 std::string BaseSDKPath = ""; 327 if (!HasSysroot) { 328 const char *envValue = getenv("SCE_PS4_SDK_DIR"); 329 if (envValue) 330 BaseSDKPath = envValue; 331 else { 332 // HSOpts.ResourceDir variable contains the location of Clang's 333 // resource files. 334 // Assuming that Clang is configured for PS4 without 335 // --with-clang-resource-dir option, the location of Clang's resource 336 // files is <SDK_DIR>/host_tools/lib/clang 337 SmallString<128> P = StringRef(HSOpts.ResourceDir); 338 llvm::sys::path::append(P, "../../.."); 339 BaseSDKPath = P.str(); 340 } 341 } 342 AddPath(BaseSDKPath + "/target/include", System, false); 343 if (triple.isPS4CPU()) 344 AddPath(BaseSDKPath + "/target/include_common", System, false); 345 } 346 default: 347 AddPath("/usr/include", ExternCSystem, false); 348 break; 349 } 350 } 351 352 void InitHeaderSearch:: 353 AddDefaultCPlusPlusIncludePaths(const llvm::Triple &triple, const HeaderSearchOptions &HSOpts) { 354 llvm::Triple::OSType os = triple.getOS(); 355 // FIXME: temporary hack: hard-coded paths. 356 357 if (triple.isOSDarwin()) { 358 switch (triple.getArch()) { 359 default: break; 360 361 case llvm::Triple::ppc: 362 case llvm::Triple::ppc64: 363 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 364 "powerpc-apple-darwin10", "", "ppc64", 365 triple); 366 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.0.0", 367 "powerpc-apple-darwin10", "", "ppc64", 368 triple); 369 break; 370 371 case llvm::Triple::x86: 372 case llvm::Triple::x86_64: 373 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 374 "i686-apple-darwin10", "", "x86_64", triple); 375 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.0.0", 376 "i686-apple-darwin8", "", "", triple); 377 break; 378 379 case llvm::Triple::arm: 380 case llvm::Triple::thumb: 381 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 382 "arm-apple-darwin10", "v7", "", triple); 383 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 384 "arm-apple-darwin10", "v6", "", triple); 385 break; 386 387 case llvm::Triple::aarch64: 388 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 389 "arm64-apple-darwin10", "", "", triple); 390 break; 391 } 392 return; 393 } 394 395 switch (os) { 396 case llvm::Triple::Linux: 397 llvm_unreachable("Include management is handled in the driver."); 398 break; 399 case llvm::Triple::Win32: 400 switch (triple.getEnvironment()) { 401 default: llvm_unreachable("Include management is handled in the driver."); 402 case llvm::Triple::Cygnus: 403 // Cygwin-1.7 404 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.7.3"); 405 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.5.3"); 406 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.4"); 407 // g++-4 / Cygwin-1.5 408 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.2"); 409 break; 410 } 411 break; 412 case llvm::Triple::DragonFly: 413 if (llvm::sys::fs::exists("/usr/lib/gcc47")) 414 AddPath("/usr/include/c++/4.7", CXXSystem, false); 415 else 416 AddPath("/usr/include/c++/4.4", CXXSystem, false); 417 break; 418 case llvm::Triple::OpenBSD: { 419 std::string t = triple.getTriple(); 420 if (t.substr(0, 6) == "x86_64") 421 t.replace(0, 6, "amd64"); 422 AddGnuCPlusPlusIncludePaths("/usr/include/g++", 423 t, "", "", triple); 424 break; 425 } 426 case llvm::Triple::Minix: 427 AddGnuCPlusPlusIncludePaths("/usr/gnu/include/c++/4.4.3", 428 "", "", "", triple); 429 break; 430 default: 431 break; 432 } 433 } 434 435 void InitHeaderSearch::AddDefaultIncludePaths(const LangOptions &Lang, 436 const llvm::Triple &triple, 437 const HeaderSearchOptions &HSOpts) { 438 // NB: This code path is going away. All of the logic is moving into the 439 // driver which has the information necessary to do target-specific 440 // selections of default include paths. Each target which moves there will be 441 // exempted from this logic here until we can delete the entire pile of code. 442 switch (triple.getOS()) { 443 default: 444 break; // Everything else continues to use this routine's logic. 445 446 case llvm::Triple::Linux: 447 return; 448 449 case llvm::Triple::Win32: 450 if (triple.getEnvironment() != llvm::Triple::Cygnus || 451 triple.isOSBinFormatMachO()) 452 return; 453 break; 454 } 455 456 if (Lang.CPlusPlus && HSOpts.UseStandardCXXIncludes && 457 HSOpts.UseStandardSystemIncludes) { 458 if (HSOpts.UseLibcxx) { 459 if (triple.isOSDarwin()) { 460 // On Darwin, libc++ may be installed alongside the compiler in 461 // include/c++/v1. 462 if (!HSOpts.ResourceDir.empty()) { 463 // Remove version from foo/lib/clang/version 464 StringRef NoVer = llvm::sys::path::parent_path(HSOpts.ResourceDir); 465 // Remove clang from foo/lib/clang 466 StringRef Lib = llvm::sys::path::parent_path(NoVer); 467 // Remove lib from foo/lib 468 SmallString<128> P = llvm::sys::path::parent_path(Lib); 469 470 // Get foo/include/c++/v1 471 llvm::sys::path::append(P, "include", "c++", "v1"); 472 AddUnmappedPath(P, CXXSystem, false); 473 } 474 } 475 AddPath("/usr/include/c++/v1", CXXSystem, false); 476 } else { 477 AddDefaultCPlusPlusIncludePaths(triple, HSOpts); 478 } 479 } 480 481 AddDefaultCIncludePaths(triple, HSOpts); 482 483 // Add the default framework include paths on Darwin. 484 if (HSOpts.UseStandardSystemIncludes) { 485 if (triple.isOSDarwin()) { 486 AddPath("/System/Library/Frameworks", System, true); 487 AddPath("/Library/Frameworks", System, true); 488 } 489 } 490 } 491 492 /// RemoveDuplicates - If there are duplicate directory entries in the specified 493 /// search list, remove the later (dead) ones. Returns the number of non-system 494 /// headers removed, which is used to update NumAngled. 495 static unsigned RemoveDuplicates(std::vector<DirectoryLookup> &SearchList, 496 unsigned First, bool Verbose) { 497 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenDirs; 498 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenFrameworkDirs; 499 llvm::SmallPtrSet<const HeaderMap *, 8> SeenHeaderMaps; 500 unsigned NonSystemRemoved = 0; 501 for (unsigned i = First; i != SearchList.size(); ++i) { 502 unsigned DirToRemove = i; 503 504 const DirectoryLookup &CurEntry = SearchList[i]; 505 506 if (CurEntry.isNormalDir()) { 507 // If this isn't the first time we've seen this dir, remove it. 508 if (SeenDirs.insert(CurEntry.getDir()).second) 509 continue; 510 } else if (CurEntry.isFramework()) { 511 // If this isn't the first time we've seen this framework dir, remove it. 512 if (SeenFrameworkDirs.insert(CurEntry.getFrameworkDir()).second) 513 continue; 514 } else { 515 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?"); 516 // If this isn't the first time we've seen this headermap, remove it. 517 if (SeenHeaderMaps.insert(CurEntry.getHeaderMap()).second) 518 continue; 519 } 520 521 // If we have a normal #include dir/framework/headermap that is shadowed 522 // later in the chain by a system include location, we actually want to 523 // ignore the user's request and drop the user dir... keeping the system 524 // dir. This is weird, but required to emulate GCC's search path correctly. 525 // 526 // Since dupes of system dirs are rare, just rescan to find the original 527 // that we're nuking instead of using a DenseMap. 528 if (CurEntry.getDirCharacteristic() != SrcMgr::C_User) { 529 // Find the dir that this is the same of. 530 unsigned FirstDir; 531 for (FirstDir = 0; ; ++FirstDir) { 532 assert(FirstDir != i && "Didn't find dupe?"); 533 534 const DirectoryLookup &SearchEntry = SearchList[FirstDir]; 535 536 // If these are different lookup types, then they can't be the dupe. 537 if (SearchEntry.getLookupType() != CurEntry.getLookupType()) 538 continue; 539 540 bool isSame; 541 if (CurEntry.isNormalDir()) 542 isSame = SearchEntry.getDir() == CurEntry.getDir(); 543 else if (CurEntry.isFramework()) 544 isSame = SearchEntry.getFrameworkDir() == CurEntry.getFrameworkDir(); 545 else { 546 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?"); 547 isSame = SearchEntry.getHeaderMap() == CurEntry.getHeaderMap(); 548 } 549 550 if (isSame) 551 break; 552 } 553 554 // If the first dir in the search path is a non-system dir, zap it 555 // instead of the system one. 556 if (SearchList[FirstDir].getDirCharacteristic() == SrcMgr::C_User) 557 DirToRemove = FirstDir; 558 } 559 560 if (Verbose) { 561 llvm::errs() << "ignoring duplicate directory \"" 562 << CurEntry.getName() << "\"\n"; 563 if (DirToRemove != i) 564 llvm::errs() << " as it is a non-system directory that duplicates " 565 << "a system directory\n"; 566 } 567 if (DirToRemove != i) 568 ++NonSystemRemoved; 569 570 // This is reached if the current entry is a duplicate. Remove the 571 // DirToRemove (usually the current dir). 572 SearchList.erase(SearchList.begin()+DirToRemove); 573 --i; 574 } 575 return NonSystemRemoved; 576 } 577 578 579 void InitHeaderSearch::Realize(const LangOptions &Lang) { 580 // Concatenate ANGLE+SYSTEM+AFTER chains together into SearchList. 581 std::vector<DirectoryLookup> SearchList; 582 SearchList.reserve(IncludePath.size()); 583 584 // Quoted arguments go first. 585 for (auto &Include : IncludePath) 586 if (Include.first == Quoted) 587 SearchList.push_back(Include.second); 588 589 // Deduplicate and remember index. 590 RemoveDuplicates(SearchList, 0, Verbose); 591 unsigned NumQuoted = SearchList.size(); 592 593 for (auto &Include : IncludePath) 594 if (Include.first == Angled || Include.first == IndexHeaderMap) 595 SearchList.push_back(Include.second); 596 597 RemoveDuplicates(SearchList, NumQuoted, Verbose); 598 unsigned NumAngled = SearchList.size(); 599 600 for (auto &Include : IncludePath) 601 if (Include.first == System || Include.first == ExternCSystem || 602 (!Lang.ObjC1 && !Lang.CPlusPlus && Include.first == CSystem) || 603 (/*FIXME !Lang.ObjC1 && */ Lang.CPlusPlus && 604 Include.first == CXXSystem) || 605 (Lang.ObjC1 && !Lang.CPlusPlus && Include.first == ObjCSystem) || 606 (Lang.ObjC1 && Lang.CPlusPlus && Include.first == ObjCXXSystem)) 607 SearchList.push_back(Include.second); 608 609 for (auto &Include : IncludePath) 610 if (Include.first == After) 611 SearchList.push_back(Include.second); 612 613 // Remove duplicates across both the Angled and System directories. GCC does 614 // this and failing to remove duplicates across these two groups breaks 615 // #include_next. 616 unsigned NonSystemRemoved = RemoveDuplicates(SearchList, NumQuoted, Verbose); 617 NumAngled -= NonSystemRemoved; 618 619 bool DontSearchCurDir = false; // TODO: set to true if -I- is set? 620 Headers.SetSearchPaths(SearchList, NumQuoted, NumAngled, DontSearchCurDir); 621 622 Headers.SetSystemHeaderPrefixes(SystemHeaderPrefixes); 623 624 // If verbose, print the list of directories that will be searched. 625 if (Verbose) { 626 llvm::errs() << "#include \"...\" search starts here:\n"; 627 for (unsigned i = 0, e = SearchList.size(); i != e; ++i) { 628 if (i == NumQuoted) 629 llvm::errs() << "#include <...> search starts here:\n"; 630 const char *Name = SearchList[i].getName(); 631 const char *Suffix; 632 if (SearchList[i].isNormalDir()) 633 Suffix = ""; 634 else if (SearchList[i].isFramework()) 635 Suffix = " (framework directory)"; 636 else { 637 assert(SearchList[i].isHeaderMap() && "Unknown DirectoryLookup"); 638 Suffix = " (headermap)"; 639 } 640 llvm::errs() << " " << Name << Suffix << "\n"; 641 } 642 llvm::errs() << "End of search list.\n"; 643 } 644 } 645 646 void clang::ApplyHeaderSearchOptions(HeaderSearch &HS, 647 const HeaderSearchOptions &HSOpts, 648 const LangOptions &Lang, 649 const llvm::Triple &Triple) { 650 InitHeaderSearch Init(HS, HSOpts.Verbose, HSOpts.Sysroot); 651 652 // Add the user defined entries. 653 for (unsigned i = 0, e = HSOpts.UserEntries.size(); i != e; ++i) { 654 const HeaderSearchOptions::Entry &E = HSOpts.UserEntries[i]; 655 if (E.IgnoreSysRoot) { 656 Init.AddUnmappedPath(E.Path, E.Group, E.IsFramework); 657 } else { 658 Init.AddPath(E.Path, E.Group, E.IsFramework); 659 } 660 } 661 662 Init.AddDefaultIncludePaths(Lang, Triple, HSOpts); 663 664 for (unsigned i = 0, e = HSOpts.SystemHeaderPrefixes.size(); i != e; ++i) 665 Init.AddSystemHeaderPrefix(HSOpts.SystemHeaderPrefixes[i].Prefix, 666 HSOpts.SystemHeaderPrefixes[i].IsSystemHeader); 667 668 if (HSOpts.UseBuiltinIncludes) { 669 // Set up the builtin include directory in the module map. 670 SmallString<128> P = StringRef(HSOpts.ResourceDir); 671 llvm::sys::path::append(P, "include"); 672 if (const DirectoryEntry *Dir = HS.getFileMgr().getDirectory(P)) 673 HS.getModuleMap().setBuiltinIncludeDir(Dir); 674 } 675 676 Init.Realize(Lang); 677 } 678
