InitHeaderSearch.cpp revision 202879
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/Frontend/HeaderSearchOptions.h" 18#include "clang/Lex/HeaderSearch.h" 19#include "llvm/ADT/SmallString.h" 20#include "llvm/ADT/SmallPtrSet.h" 21#include "llvm/ADT/SmallVector.h" 22#include "llvm/ADT/StringExtras.h" 23#include "llvm/ADT/Triple.h" 24#include "llvm/ADT/Twine.h" 25#include "llvm/Support/raw_ostream.h" 26#include "llvm/System/Path.h" 27#include "llvm/Config/config.h" 28#ifdef _MSC_VER 29 #define WIN32_LEAN_AND_MEAN 1 30 #include <windows.h> 31#endif 32using namespace clang; 33using namespace clang::frontend; 34 35namespace { 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. 40class InitHeaderSearch { 41 std::vector<DirectoryLookup> IncludeGroup[4]; 42 HeaderSearch& Headers; 43 bool Verbose; 44 std::string isysroot; 45 46public: 47 48 InitHeaderSearch(HeaderSearch &HS, 49 bool verbose = false, const std::string &iSysroot = "") 50 : Headers(HS), Verbose(verbose), isysroot(iSysroot) {} 51 52 /// AddPath - Add the specified path to the specified group list. 53 void AddPath(const llvm::Twine &Path, IncludeDirGroup Group, 54 bool isCXXAware, bool isUserSupplied, 55 bool isFramework, bool IgnoreSysRoot = false); 56 57 /// AddGnuCPlusPlusIncludePaths - Add the necessary paths to suport a gnu 58 /// libstdc++. 59 void AddGnuCPlusPlusIncludePaths(llvm::StringRef Base, 60 llvm::StringRef ArchDir, 61 llvm::StringRef Dir32, 62 llvm::StringRef Dir64, 63 const llvm::Triple &triple); 64 65 /// AddMinGWCPlusPlusIncludePaths - Add the necessary paths to suport a MinGW 66 /// libstdc++. 67 void AddMinGWCPlusPlusIncludePaths(llvm::StringRef Base, 68 llvm::StringRef Arch, 69 llvm::StringRef Version); 70 71 /// AddDelimitedPaths - Add a list of paths delimited by the system PATH 72 /// separator. The processing follows that of the CPATH variable for gcc. 73 void AddDelimitedPaths(llvm::StringRef String); 74 75 // AddDefaultCIncludePaths - Add paths that should always be searched. 76 void AddDefaultCIncludePaths(const llvm::Triple &triple); 77 78 // AddDefaultCPlusPlusIncludePaths - Add paths that should be searched when 79 // compiling c++. 80 void AddDefaultCPlusPlusIncludePaths(const llvm::Triple &triple); 81 82 /// AddDefaultSystemIncludePaths - Adds the default system include paths so 83 /// that e.g. stdio.h is found. 84 void AddDefaultSystemIncludePaths(const LangOptions &Lang, 85 const llvm::Triple &triple); 86 87 /// Realize - Merges all search path lists into one list and send it to 88 /// HeaderSearch. 89 void Realize(); 90}; 91 92} 93 94void InitHeaderSearch::AddPath(const llvm::Twine &Path, 95 IncludeDirGroup Group, bool isCXXAware, 96 bool isUserSupplied, bool isFramework, 97 bool IgnoreSysRoot) { 98 assert(!Path.isTriviallyEmpty() && "can't handle empty path here"); 99 FileManager &FM = Headers.getFileMgr(); 100 101 // Compute the actual path, taking into consideration -isysroot. 102 llvm::SmallString<256> MappedPathStr; 103 llvm::raw_svector_ostream MappedPath(MappedPathStr); 104 105 // Handle isysroot. 106 if (Group == System && !IgnoreSysRoot) { 107 // FIXME: Portability. This should be a sys::Path interface, this doesn't 108 // handle things like C:\ right, nor win32 \\network\device\blah. 109 if (isysroot.size() != 1 || isysroot[0] != '/') // Add isysroot if present. 110 MappedPath << isysroot; 111 } 112 113 Path.print(MappedPath); 114 115 // Compute the DirectoryLookup type. 116 SrcMgr::CharacteristicKind Type; 117 if (Group == Quoted || Group == Angled) 118 Type = SrcMgr::C_User; 119 else if (isCXXAware) 120 Type = SrcMgr::C_System; 121 else 122 Type = SrcMgr::C_ExternCSystem; 123 124 125 // If the directory exists, add it. 126 if (const DirectoryEntry *DE = FM.getDirectory(MappedPath.str())) { 127 IncludeGroup[Group].push_back(DirectoryLookup(DE, Type, isUserSupplied, 128 isFramework)); 129 return; 130 } 131 132 // Check to see if this is an apple-style headermap (which are not allowed to 133 // be frameworks). 134 if (!isFramework) { 135 if (const FileEntry *FE = FM.getFile(MappedPath.str())) { 136 if (const HeaderMap *HM = Headers.CreateHeaderMap(FE)) { 137 // It is a headermap, add it to the search path. 138 IncludeGroup[Group].push_back(DirectoryLookup(HM, Type,isUserSupplied)); 139 return; 140 } 141 } 142 } 143 144 if (Verbose) 145 llvm::errs() << "ignoring nonexistent directory \"" 146 << MappedPath.str() << "\"\n"; 147} 148 149 150void InitHeaderSearch::AddDelimitedPaths(llvm::StringRef at) { 151 if (at.empty()) // Empty string should not add '.' path. 152 return; 153 154 llvm::StringRef::size_type delim; 155 while ((delim = at.find(llvm::sys::PathSeparator)) != llvm::StringRef::npos) { 156 if (delim == 0) 157 AddPath(".", Angled, false, true, false); 158 else 159 AddPath(at.substr(0, delim), Angled, false, true, false); 160 at = at.substr(delim + 1); 161 } 162 163 if (at.empty()) 164 AddPath(".", Angled, false, true, false); 165 else 166 AddPath(at, Angled, false, true, false); 167} 168 169void InitHeaderSearch::AddGnuCPlusPlusIncludePaths(llvm::StringRef Base, 170 llvm::StringRef ArchDir, 171 llvm::StringRef Dir32, 172 llvm::StringRef Dir64, 173 const llvm::Triple &triple) { 174 // Add the base dir 175 AddPath(Base, System, true, false, false); 176 177 // Add the multilib dirs 178 llvm::Triple::ArchType arch = triple.getArch(); 179 bool is64bit = arch == llvm::Triple::ppc64 || arch == llvm::Triple::x86_64; 180 if (is64bit) 181 AddPath(Base + "/" + ArchDir + "/" + Dir64, System, true, false, false); 182 else 183 AddPath(Base + "/" + ArchDir + "/" + Dir32, System, true, false, false); 184 185 // Add the backward dir 186 AddPath(Base + "/backward", System, true, false, false); 187} 188 189void InitHeaderSearch::AddMinGWCPlusPlusIncludePaths(llvm::StringRef Base, 190 llvm::StringRef Arch, 191 llvm::StringRef Version) { 192 AddPath(Base + "/" + Arch + "/" + Version + "/include", 193 System, true, false, false); 194 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++", 195 System, true, false, false); 196 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/backward", 197 System, true, false, false); 198} 199 200 // FIXME: This probably should goto to some platform utils place. 201#ifdef _MSC_VER 202 203 // Read registry string. 204 // This also supports a means to look for high-versioned keys by use 205 // of a $VERSION placeholder in the key path. 206 // $VERSION in the key path is a placeholder for the version number, 207 // causing the highest value path to be searched for and used. 208 // I.e. "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\$VERSION". 209 // There can be additional characters in the component. Only the numberic 210 // characters are compared. 211static bool getSystemRegistryString(const char *keyPath, const char *valueName, 212 char *value, size_t maxLength) { 213 HKEY hRootKey = NULL; 214 HKEY hKey = NULL; 215 const char* subKey = NULL; 216 DWORD valueType; 217 DWORD valueSize = maxLength - 1; 218 long lResult; 219 bool returnValue = false; 220 if (strncmp(keyPath, "HKEY_CLASSES_ROOT\\", 18) == 0) { 221 hRootKey = HKEY_CLASSES_ROOT; 222 subKey = keyPath + 18; 223 } 224 else if (strncmp(keyPath, "HKEY_USERS\\", 11) == 0) { 225 hRootKey = HKEY_USERS; 226 subKey = keyPath + 11; 227 } 228 else if (strncmp(keyPath, "HKEY_LOCAL_MACHINE\\", 19) == 0) { 229 hRootKey = HKEY_LOCAL_MACHINE; 230 subKey = keyPath + 19; 231 } 232 else if (strncmp(keyPath, "HKEY_CURRENT_USER\\", 18) == 0) { 233 hRootKey = HKEY_CURRENT_USER; 234 subKey = keyPath + 18; 235 } 236 else 237 return(false); 238 const char *placeHolder = strstr(subKey, "$VERSION"); 239 char bestName[256]; 240 bestName[0] = '\0'; 241 // If we have a $VERSION placeholder, do the highest-version search. 242 if (placeHolder) { 243 const char *keyEnd = placeHolder - 1; 244 const char *nextKey = placeHolder; 245 // Find end of previous key. 246 while ((keyEnd > subKey) && (*keyEnd != '\\')) 247 keyEnd--; 248 // Find end of key containing $VERSION. 249 while (*nextKey && (*nextKey != '\\')) 250 nextKey++; 251 size_t partialKeyLength = keyEnd - subKey; 252 char partialKey[256]; 253 if (partialKeyLength > sizeof(partialKey)) 254 partialKeyLength = sizeof(partialKey); 255 strncpy(partialKey, subKey, partialKeyLength); 256 partialKey[partialKeyLength] = '\0'; 257 HKEY hTopKey = NULL; 258 lResult = RegOpenKeyEx(hRootKey, partialKey, 0, KEY_READ, &hTopKey); 259 if (lResult == ERROR_SUCCESS) { 260 char keyName[256]; 261 int bestIndex = -1; 262 double bestValue = 0.0; 263 DWORD index, size = sizeof(keyName) - 1; 264 for (index = 0; RegEnumKeyEx(hTopKey, index, keyName, &size, NULL, 265 NULL, NULL, NULL) == ERROR_SUCCESS; index++) { 266 const char *sp = keyName; 267 while (*sp && !isdigit(*sp)) 268 sp++; 269 if (!*sp) 270 continue; 271 const char *ep = sp + 1; 272 while (*ep && (isdigit(*ep) || (*ep == '.'))) 273 ep++; 274 char numBuf[32]; 275 strncpy(numBuf, sp, sizeof(numBuf) - 1); 276 numBuf[sizeof(numBuf) - 1] = '\0'; 277 double value = strtod(numBuf, NULL); 278 if (value > bestValue) { 279 bestIndex = (int)index; 280 bestValue = value; 281 strcpy(bestName, keyName); 282 } 283 size = sizeof(keyName) - 1; 284 } 285 // If we found the highest versioned key, open the key and get the value. 286 if (bestIndex != -1) { 287 // Append rest of key. 288 strncat(bestName, nextKey, sizeof(bestName) - 1); 289 bestName[sizeof(bestName) - 1] = '\0'; 290 // Open the chosen key path remainder. 291 lResult = RegOpenKeyEx(hTopKey, bestName, 0, KEY_READ, &hKey); 292 if (lResult == ERROR_SUCCESS) { 293 lResult = RegQueryValueEx(hKey, valueName, NULL, &valueType, 294 (LPBYTE)value, &valueSize); 295 if (lResult == ERROR_SUCCESS) 296 returnValue = true; 297 RegCloseKey(hKey); 298 } 299 } 300 RegCloseKey(hTopKey); 301 } 302 } 303 else { 304 lResult = RegOpenKeyEx(hRootKey, subKey, 0, KEY_READ, &hKey); 305 if (lResult == ERROR_SUCCESS) { 306 lResult = RegQueryValueEx(hKey, valueName, NULL, &valueType, 307 (LPBYTE)value, &valueSize); 308 if (lResult == ERROR_SUCCESS) 309 returnValue = true; 310 RegCloseKey(hKey); 311 } 312 } 313 return(returnValue); 314} 315#else // _MSC_VER 316 // Read registry string. 317static bool getSystemRegistryString(const char*, const char*, char*, size_t) { 318 return(false); 319} 320#endif // _MSC_VER 321 322 // Get Visual Studio installation directory. 323static bool getVisualStudioDir(std::string &path) { 324 char vsIDEInstallDir[256]; 325 // Try the Windows registry first. 326 bool hasVCDir = getSystemRegistryString( 327 "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\VisualStudio\\$VERSION", 328 "InstallDir", vsIDEInstallDir, sizeof(vsIDEInstallDir) - 1); 329 // If we have both vc80 and vc90, pick version we were compiled with. 330 if (hasVCDir && vsIDEInstallDir[0]) { 331 char *p = (char*)strstr(vsIDEInstallDir, "\\Common7\\IDE"); 332 if (p) 333 *p = '\0'; 334 path = vsIDEInstallDir; 335 return(true); 336 } 337 else { 338 // Try the environment. 339 const char* vs90comntools = getenv("VS90COMNTOOLS"); 340 const char* vs80comntools = getenv("VS80COMNTOOLS"); 341 const char* vscomntools = NULL; 342 // If we have both vc80 and vc90, pick version we were compiled with. 343 if (vs90comntools && vs80comntools) { 344 #if (_MSC_VER >= 1500) // VC90 345 vscomntools = vs90comntools; 346 #elif (_MSC_VER == 1400) // VC80 347 vscomntools = vs80comntools; 348 #else 349 vscomntools = vs90comntools; 350 #endif 351 } 352 else if (vs90comntools) 353 vscomntools = vs90comntools; 354 else if (vs80comntools) 355 vscomntools = vs80comntools; 356 if (vscomntools && *vscomntools) { 357 char *p = (char*)strstr(vscomntools, "\\Common7\\Tools"); 358 if (p) 359 *p = '\0'; 360 path = vscomntools; 361 return(true); 362 } 363 else 364 return(false); 365 } 366 return(false); 367} 368 369 // Get Windows SDK installation directory. 370static bool getWindowsSDKDir(std::string &path) { 371 char windowsSDKInstallDir[256]; 372 // Try the Windows registry. 373 bool hasSDKDir = getSystemRegistryString( 374 "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Microsoft SDKs\\Windows\\$VERSION", 375 "InstallationFolder", windowsSDKInstallDir, sizeof(windowsSDKInstallDir) - 1); 376 // If we have both vc80 and vc90, pick version we were compiled with. 377 if (hasSDKDir && windowsSDKInstallDir[0]) { 378 path = windowsSDKInstallDir; 379 return(true); 380 } 381 return(false); 382} 383 384void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple) { 385 // FIXME: temporary hack: hard-coded paths. 386 llvm::StringRef CIncludeDirs(C_INCLUDE_DIRS); 387 if (CIncludeDirs != "") { 388 llvm::SmallVector<llvm::StringRef, 5> dirs; 389 CIncludeDirs.split(dirs, ":"); 390 for (llvm::SmallVectorImpl<llvm::StringRef>::iterator i = dirs.begin(); 391 i != dirs.end(); 392 ++i) 393 AddPath(*i, System, false, false, false); 394 return; 395 } 396 llvm::Triple::OSType os = triple.getOS(); 397 switch (os) { 398 case llvm::Triple::Win32: 399 { 400 std::string VSDir; 401 std::string WindowsSDKDir; 402 if (getVisualStudioDir(VSDir)) { 403 AddPath(VSDir + "\\VC\\include", System, false, false, false); 404 if (getWindowsSDKDir(WindowsSDKDir)) 405 AddPath(WindowsSDKDir, System, false, false, false); 406 else 407 AddPath(VSDir + "\\VC\\PlatformSDK\\Include", 408 System, false, false, false); 409 } 410 else { 411 // Default install paths. 412 AddPath("C:/Program Files/Microsoft Visual Studio 9.0/VC/include", 413 System, false, false, false); 414 AddPath( 415 "C:/Program Files/Microsoft Visual Studio 9.0/VC/PlatformSDK/Include", 416 System, false, false, false); 417 AddPath("C:/Program Files/Microsoft Visual Studio 8/VC/include", 418 System, false, false, false); 419 AddPath( 420 "C:/Program Files/Microsoft Visual Studio 8/VC/PlatformSDK/Include", 421 System, false, false, false); 422 // For some clang developers. 423 AddPath("G:/Program Files/Microsoft Visual Studio 9.0/VC/include", 424 System, false, false, false); 425 AddPath( 426 "G:/Program Files/Microsoft Visual Studio 9.0/VC/PlatformSDK/Include", 427 System, false, false, false); 428 } 429 } 430 break; 431 case llvm::Triple::MinGW64: 432 case llvm::Triple::MinGW32: 433 AddPath("c:/mingw/include", System, true, false, false); 434 break; 435 default: 436 break; 437 } 438 439 AddPath("/usr/local/include", System, false, false, false); 440 AddPath("/usr/include", System, false, false, false); 441} 442 443void InitHeaderSearch::AddDefaultCPlusPlusIncludePaths(const llvm::Triple &triple) { 444 llvm::Triple::OSType os = triple.getOS(); 445 llvm::StringRef CxxIncludeRoot(CXX_INCLUDE_ROOT); 446 if (CxxIncludeRoot != "") { 447 llvm::StringRef CxxIncludeArch(CXX_INCLUDE_ARCH); 448 if (CxxIncludeArch == "") 449 AddGnuCPlusPlusIncludePaths(CxxIncludeRoot, triple.str().c_str(), 450 CXX_INCLUDE_32BIT_DIR, CXX_INCLUDE_64BIT_DIR, triple); 451 else 452 AddGnuCPlusPlusIncludePaths(CxxIncludeRoot, CXX_INCLUDE_ARCH, 453 CXX_INCLUDE_32BIT_DIR, CXX_INCLUDE_64BIT_DIR, triple); 454 return; 455 } 456 // FIXME: temporary hack: hard-coded paths. 457 switch (os) { 458 case llvm::Triple::Cygwin: 459 AddPath("/lib/gcc/i686-pc-cygwin/3.4.4/include", 460 System, true, false, false); 461 AddPath("/lib/gcc/i686-pc-cygwin/3.4.4/include/c++", 462 System, true, false, false); 463 break; 464 case llvm::Triple::MinGW64: 465 // Try gcc 4.4.0 466 AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw64", "4.4.0"); 467 // Try gcc 4.3.0 468 AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw64", "4.3.0"); 469 // Fall through. 470 case llvm::Triple::MinGW32: 471 // Try gcc 4.4.0 472 AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.4.0"); 473 // Try gcc 4.3.0 474 AddMinGWCPlusPlusIncludePaths("c:/MinGW/lib/gcc", "mingw32", "4.3.0"); 475 break; 476 case llvm::Triple::Darwin: 477 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1", 478 "i686-apple-darwin10", "", "x86_64", triple); 479 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.0.0", 480 "i686-apple-darwin8", "", "", triple); 481 break; 482 case llvm::Triple::DragonFly: 483 AddPath("/usr/include/c++/4.1", System, true, false, false); 484 break; 485 case llvm::Triple::Linux: 486 // Exherbo (2009-10-26) 487 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.2", 488 "x86_64-pc-linux-gnu", "32", "", triple); 489 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.2", 490 "i686-pc-linux-gnu", "", "", triple); 491 // Debian sid 492 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.2", 493 "x86_64-linux-gnu", "32", "", triple); 494 // Ubuntu 7.10 - Gutsy Gibbon 495 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.1.3", 496 "i486-linux-gnu", "", "", triple); 497 // Ubuntu 9.04 498 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3.3", 499 "x86_64-linux-gnu","32", "", triple); 500 // Ubuntu 9.10 501 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.1", 502 "x86_64-linux-gnu", "32", "", triple); 503 // Fedora 8 504 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.1.2", 505 "i386-redhat-linux", "", "", triple); 506 // Fedora 9 507 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3.0", 508 "i386-redhat-linux", "", "", triple); 509 // Fedora 10 510 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3.2", 511 "i386-redhat-linux","", "", triple); 512 513 // Fedora 10 x86_64 514 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3.2", 515 "x86_64-redhat-linux", "32", "", triple); 516 517 // Fedora 11 518 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.1", 519 "i586-redhat-linux","", "", triple); 520 521 // Fedora 12 522 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4.2", 523 "i686-redhat-linux","", "", triple); 524 525 // openSUSE 11.1 32 bit 526 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3", 527 "i586-suse-linux", "", "", triple); 528 // openSUSE 11.1 64 bit 529 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3", 530 "x86_64-suse-linux", "32", "", triple); 531 // openSUSE 11.2 532 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4", 533 "i586-suse-linux", "", "", triple); 534 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.4", 535 "x86_64-suse-linux", "", "", triple); 536 // Arch Linux 2008-06-24 537 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3.1", 538 "i686-pc-linux-gnu", "", "", triple); 539 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3.1", 540 "x86_64-unknown-linux-gnu", "", "", triple); 541 // Gentoo x86 2009.1 stable 542 AddGnuCPlusPlusIncludePaths( 543 "/usr/lib/gcc/i686-pc-linux-gnu/4.3.4/include/g++-v4", 544 "i686-pc-linux-gnu", "", "", triple); 545 // Gentoo x86 2009.0 stable 546 AddGnuCPlusPlusIncludePaths( 547 "/usr/lib/gcc/i686-pc-linux-gnu/4.3.2/include/g++-v4", 548 "i686-pc-linux-gnu", "", "", triple); 549 // Gentoo x86 2008.0 stable 550 AddGnuCPlusPlusIncludePaths( 551 "/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4", 552 "i686-pc-linux-gnu", "", "", triple); 553 // Ubuntu 8.10 554 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3", 555 "i486-pc-linux-gnu", "", "", triple); 556 // Ubuntu 9.04 557 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.3", 558 "i486-linux-gnu","", "", triple); 559 // Gentoo amd64 stable 560 AddGnuCPlusPlusIncludePaths( 561 "/usr/lib/gcc/x86_64-pc-linux-gnu/4.1.2/include/g++-v4", 562 "i686-pc-linux-gnu", "", "", triple); 563 break; 564 case llvm::Triple::FreeBSD: 565 AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2", "", "", "", triple); 566 break; 567 case llvm::Triple::Solaris: 568 // Solaris - Fall though.. 569 case llvm::Triple::AuroraUX: 570 // AuroraUX 571 AddGnuCPlusPlusIncludePaths("/opt/gcc4/include/c++/4.2.4", 572 "i386-pc-solaris2.11", "", "", triple); 573 break; 574 default: 575 break; 576 } 577} 578 579void InitHeaderSearch::AddDefaultSystemIncludePaths(const LangOptions &Lang, 580 const llvm::Triple &triple) { 581 if (Lang.CPlusPlus) 582 AddDefaultCPlusPlusIncludePaths(triple); 583 584 AddDefaultCIncludePaths(triple); 585 586 // Add the default framework include paths on Darwin. 587 if (triple.getOS() == llvm::Triple::Darwin) { 588 AddPath("/System/Library/Frameworks", System, true, false, true); 589 AddPath("/Library/Frameworks", System, true, false, true); 590 } 591} 592 593/// RemoveDuplicates - If there are duplicate directory entries in the specified 594/// search list, remove the later (dead) ones. 595static void RemoveDuplicates(std::vector<DirectoryLookup> &SearchList, 596 bool Verbose) { 597 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenDirs; 598 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenFrameworkDirs; 599 llvm::SmallPtrSet<const HeaderMap *, 8> SeenHeaderMaps; 600 for (unsigned i = 0; i != SearchList.size(); ++i) { 601 unsigned DirToRemove = i; 602 603 const DirectoryLookup &CurEntry = SearchList[i]; 604 605 if (CurEntry.isNormalDir()) { 606 // If this isn't the first time we've seen this dir, remove it. 607 if (SeenDirs.insert(CurEntry.getDir())) 608 continue; 609 } else if (CurEntry.isFramework()) { 610 // If this isn't the first time we've seen this framework dir, remove it. 611 if (SeenFrameworkDirs.insert(CurEntry.getFrameworkDir())) 612 continue; 613 } else { 614 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?"); 615 // If this isn't the first time we've seen this headermap, remove it. 616 if (SeenHeaderMaps.insert(CurEntry.getHeaderMap())) 617 continue; 618 } 619 620 // If we have a normal #include dir/framework/headermap that is shadowed 621 // later in the chain by a system include location, we actually want to 622 // ignore the user's request and drop the user dir... keeping the system 623 // dir. This is weird, but required to emulate GCC's search path correctly. 624 // 625 // Since dupes of system dirs are rare, just rescan to find the original 626 // that we're nuking instead of using a DenseMap. 627 if (CurEntry.getDirCharacteristic() != SrcMgr::C_User) { 628 // Find the dir that this is the same of. 629 unsigned FirstDir; 630 for (FirstDir = 0; ; ++FirstDir) { 631 assert(FirstDir != i && "Didn't find dupe?"); 632 633 const DirectoryLookup &SearchEntry = SearchList[FirstDir]; 634 635 // If these are different lookup types, then they can't be the dupe. 636 if (SearchEntry.getLookupType() != CurEntry.getLookupType()) 637 continue; 638 639 bool isSame; 640 if (CurEntry.isNormalDir()) 641 isSame = SearchEntry.getDir() == CurEntry.getDir(); 642 else if (CurEntry.isFramework()) 643 isSame = SearchEntry.getFrameworkDir() == CurEntry.getFrameworkDir(); 644 else { 645 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?"); 646 isSame = SearchEntry.getHeaderMap() == CurEntry.getHeaderMap(); 647 } 648 649 if (isSame) 650 break; 651 } 652 653 // If the first dir in the search path is a non-system dir, zap it 654 // instead of the system one. 655 if (SearchList[FirstDir].getDirCharacteristic() == SrcMgr::C_User) 656 DirToRemove = FirstDir; 657 } 658 659 if (Verbose) { 660 llvm::errs() << "ignoring duplicate directory \"" 661 << CurEntry.getName() << "\"\n"; 662 if (DirToRemove != i) 663 llvm::errs() << " as it is a non-system directory that duplicates " 664 << "a system directory\n"; 665 } 666 667 // This is reached if the current entry is a duplicate. Remove the 668 // DirToRemove (usually the current dir). 669 SearchList.erase(SearchList.begin()+DirToRemove); 670 --i; 671 } 672} 673 674 675void InitHeaderSearch::Realize() { 676 // Concatenate ANGLE+SYSTEM+AFTER chains together into SearchList. 677 std::vector<DirectoryLookup> SearchList; 678 SearchList = IncludeGroup[Angled]; 679 SearchList.insert(SearchList.end(), IncludeGroup[System].begin(), 680 IncludeGroup[System].end()); 681 SearchList.insert(SearchList.end(), IncludeGroup[After].begin(), 682 IncludeGroup[After].end()); 683 RemoveDuplicates(SearchList, Verbose); 684 RemoveDuplicates(IncludeGroup[Quoted], Verbose); 685 686 // Prepend QUOTED list on the search list. 687 SearchList.insert(SearchList.begin(), IncludeGroup[Quoted].begin(), 688 IncludeGroup[Quoted].end()); 689 690 691 bool DontSearchCurDir = false; // TODO: set to true if -I- is set? 692 Headers.SetSearchPaths(SearchList, IncludeGroup[Quoted].size(), 693 DontSearchCurDir); 694 695 // If verbose, print the list of directories that will be searched. 696 if (Verbose) { 697 llvm::errs() << "#include \"...\" search starts here:\n"; 698 unsigned QuotedIdx = IncludeGroup[Quoted].size(); 699 for (unsigned i = 0, e = SearchList.size(); i != e; ++i) { 700 if (i == QuotedIdx) 701 llvm::errs() << "#include <...> search starts here:\n"; 702 const char *Name = SearchList[i].getName(); 703 const char *Suffix; 704 if (SearchList[i].isNormalDir()) 705 Suffix = ""; 706 else if (SearchList[i].isFramework()) 707 Suffix = " (framework directory)"; 708 else { 709 assert(SearchList[i].isHeaderMap() && "Unknown DirectoryLookup"); 710 Suffix = " (headermap)"; 711 } 712 llvm::errs() << " " << Name << Suffix << "\n"; 713 } 714 llvm::errs() << "End of search list.\n"; 715 } 716} 717 718void clang::ApplyHeaderSearchOptions(HeaderSearch &HS, 719 const HeaderSearchOptions &HSOpts, 720 const LangOptions &Lang, 721 const llvm::Triple &Triple) { 722 InitHeaderSearch Init(HS, HSOpts.Verbose, HSOpts.Sysroot); 723 724 // Add the user defined entries. 725 for (unsigned i = 0, e = HSOpts.UserEntries.size(); i != e; ++i) { 726 const HeaderSearchOptions::Entry &E = HSOpts.UserEntries[i]; 727 Init.AddPath(E.Path, E.Group, false, E.IsUserSupplied, E.IsFramework, 728 false); 729 } 730 731 // Add entries from CPATH and friends. 732 Init.AddDelimitedPaths(HSOpts.EnvIncPath); 733 if (Lang.CPlusPlus && Lang.ObjC1) 734 Init.AddDelimitedPaths(HSOpts.ObjCXXEnvIncPath); 735 else if (Lang.CPlusPlus) 736 Init.AddDelimitedPaths(HSOpts.CXXEnvIncPath); 737 else if (Lang.ObjC1) 738 Init.AddDelimitedPaths(HSOpts.ObjCEnvIncPath); 739 else 740 Init.AddDelimitedPaths(HSOpts.CEnvIncPath); 741 742 if (HSOpts.UseBuiltinIncludes) { 743 // Ignore the sys root, we *always* look for clang headers relative to 744 // supplied path. 745 llvm::sys::Path P(HSOpts.ResourceDir); 746 P.appendComponent("include"); 747 Init.AddPath(P.str(), System, false, false, false, /*IgnoreSysRoot=*/ true); 748 } 749 750 if (HSOpts.UseStandardIncludes) 751 Init.AddDefaultSystemIncludePaths(Lang, Triple); 752 753 Init.Realize(); 754} 755