Mercurial > hg > CbC > CbC_llvm

comparison clang/lib/Frontend/InitHeaderSearch.cpp @ 150:1d019706d866

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
parents
children 0572611fdcc8
comparison
equal deleted inserted replaced
147:c2174574ed3a 150:1d019706d866
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 InitHeaderSearch(HeaderSearch &HS, bool verbose, StringRef sysroot)
51 : Headers(HS), Verbose(verbose), IncludeSysroot(std::string(sysroot)),
52 HasSysroot(!(sysroot.empty() || sysroot == "/")) {}
53
54 /// AddPath - Add the specified path to the specified group list, prefixing
55 /// the sysroot if used.
56 /// Returns true if the path exists, false if it was ignored.
57 bool AddPath(const Twine &Path, IncludeDirGroup Group, bool isFramework);
58
59 /// AddUnmappedPath - Add the specified path to the specified group list,
60 /// without performing any sysroot remapping.
61 /// Returns true if the path exists, false if it was ignored.
62 bool 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(std::string(Prefix), IsSystemHeader);
69 }
70
71 /// AddGnuCPlusPlusIncludePaths - Add the necessary paths to support a gnu
72 /// libstdc++.
73 /// Returns true if the \p Base path was found, false if it does not exist.
74 bool AddGnuCPlusPlusIncludePaths(StringRef Base, StringRef ArchDir,
75 StringRef Dir32, StringRef Dir64,
76 const llvm::Triple &triple);
77
78 /// AddMinGWCPlusPlusIncludePaths - Add the necessary paths to support a MinGW
79 /// libstdc++.
80 void AddMinGWCPlusPlusIncludePaths(StringRef Base,
81 StringRef Arch,
82 StringRef Version);
83
84 // AddDefaultCIncludePaths - Add paths that should always be searched.
85 void AddDefaultCIncludePaths(const llvm::Triple &triple,
86 const HeaderSearchOptions &HSOpts);
87
88 // AddDefaultCPlusPlusIncludePaths - Add paths that should be searched when
89 // compiling c++.
90 void AddDefaultCPlusPlusIncludePaths(const LangOptions &LangOpts,
91 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(_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 bool 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 return AddUnmappedPath(IncludeSysroot + Path, Group, isFramework);
124 }
125 }
126
127 return AddUnmappedPath(Path, Group, isFramework);
128 }
129
130 bool InitHeaderSearch::AddUnmappedPath(const Twine &Path, IncludeDirGroup Group,
131 bool isFramework) {
132 assert(!Path.isTriviallyEmpty() && "can't handle empty path here");
133
134 FileManager &FM = Headers.getFileMgr();
135 SmallString<256> MappedPathStorage;
136 StringRef MappedPathStr = Path.toStringRef(MappedPathStorage);
137
138 // If use system headers while cross-compiling, emit the warning.
139 if (HasSysroot && (MappedPathStr.startswith("/usr/include") ||
140 MappedPathStr.startswith("/usr/local/include"))) {
141 Headers.getDiags().Report(diag::warn_poison_system_directories)
142 << MappedPathStr;
143 }
144
145 // Compute the DirectoryLookup type.
146 SrcMgr::CharacteristicKind Type;
147 if (Group == Quoted || Group == Angled || Group == IndexHeaderMap) {
148 Type = SrcMgr::C_User;
149 } else if (Group == ExternCSystem) {
150 Type = SrcMgr::C_ExternCSystem;
151 } else {
152 Type = SrcMgr::C_System;
153 }
154
155 // If the directory exists, add it.
156 if (auto DE = FM.getOptionalDirectoryRef(MappedPathStr)) {
157 IncludePath.push_back(
158 std::make_pair(Group, DirectoryLookup(*DE, Type, isFramework)));
159 return true;
160 }
161
162 // Check to see if this is an apple-style headermap (which are not allowed to
163 // be frameworks).
164 if (!isFramework) {
165 if (auto FE = FM.getFile(MappedPathStr)) {
166 if (const HeaderMap *HM = Headers.CreateHeaderMap(*FE)) {
167 // It is a headermap, add it to the search path.
168 IncludePath.push_back(
169 std::make_pair(Group,
170 DirectoryLookup(HM, Type, Group == IndexHeaderMap)));
171 return true;
172 }
173 }
174 }
175
176 if (Verbose)
177 llvm::errs() << "ignoring nonexistent directory \""
178 << MappedPathStr << "\"\n";
179 return false;
180 }
181
182 bool InitHeaderSearch::AddGnuCPlusPlusIncludePaths(StringRef Base,
183 StringRef ArchDir,
184 StringRef Dir32,
185 StringRef Dir64,
186 const llvm::Triple &triple) {
187 // Add the base dir
188 bool IsBaseFound = AddPath(Base, CXXSystem, false);
189
190 // Add the multilib dirs
191 llvm::Triple::ArchType arch = triple.getArch();
192 bool is64bit = arch == llvm::Triple::ppc64 || arch == llvm::Triple::x86_64;
193 if (is64bit)
194 AddPath(Base + "/" + ArchDir + "/" + Dir64, CXXSystem, false);
195 else
196 AddPath(Base + "/" + ArchDir + "/" + Dir32, CXXSystem, false);
197
198 // Add the backward dir
199 AddPath(Base + "/backward", CXXSystem, false);
200 return IsBaseFound;
201 }
202
203 void InitHeaderSearch::AddMinGWCPlusPlusIncludePaths(StringRef Base,
204 StringRef Arch,
205 StringRef Version) {
206 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++",
207 CXXSystem, false);
208 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/" + Arch,
209 CXXSystem, false);
210 AddPath(Base + "/" + Arch + "/" + Version + "/include/c++/backward",
211 CXXSystem, false);
212 }
213
214 void InitHeaderSearch::AddDefaultCIncludePaths(const llvm::Triple &triple,
215 const HeaderSearchOptions &HSOpts) {
216 llvm::Triple::OSType os = triple.getOS();
217
218 if (triple.isOSDarwin()) {
219 llvm_unreachable("Include management is handled in the driver.");
220 }
221
222 if (HSOpts.UseStandardSystemIncludes) {
223 switch (os) {
224 case llvm::Triple::CloudABI:
225 case llvm::Triple::FreeBSD:
226 case llvm::Triple::NetBSD:
227 case llvm::Triple::OpenBSD:
228 case llvm::Triple::NaCl:
229 case llvm::Triple::PS4:
230 case llvm::Triple::ELFIAMCU:
231 case llvm::Triple::Fuchsia:
232 break;
233 case llvm::Triple::Win32:
234 if (triple.getEnvironment() != llvm::Triple::Cygnus)
235 break;
236 LLVM_FALLTHROUGH;
237 default:
238 // FIXME: temporary hack: hard-coded paths.
239 AddPath("/usr/local/include", System, false);
240 break;
241 }
242 }
243
244 // Builtin includes use #include_next directives and should be positioned
245 // just prior C include dirs.
246 if (HSOpts.UseBuiltinIncludes) {
247 // Ignore the sys root, we *always* look for clang headers relative to
248 // supplied path.
249 SmallString<128> P = StringRef(HSOpts.ResourceDir);
250 llvm::sys::path::append(P, "include");
251 AddUnmappedPath(P, ExternCSystem, false);
252 }
253
254 // All remaining additions are for system include directories, early exit if
255 // we aren't using them.
256 if (!HSOpts.UseStandardSystemIncludes)
257 return;
258
259 // Add dirs specified via 'configure --with-c-include-dirs'.
260 StringRef CIncludeDirs(C_INCLUDE_DIRS);
261 if (CIncludeDirs != "") {
262 SmallVector<StringRef, 5> dirs;
263 CIncludeDirs.split(dirs, ":");
264 for (StringRef dir : dirs)
265 AddPath(dir, ExternCSystem, false);
266 return;
267 }
268
269 switch (os) {
270 case llvm::Triple::Linux:
271 case llvm::Triple::Hurd:
272 case llvm::Triple::Solaris:
273 llvm_unreachable("Include management is handled in the driver.");
274
275 case llvm::Triple::CloudABI: {
276 // <sysroot>/<triple>/include
277 SmallString<128> P = StringRef(HSOpts.ResourceDir);
278 llvm::sys::path::append(P, "../../..", triple.str(), "include");
279 AddPath(P, System, false);
280 break;
281 }
282
283 case llvm::Triple::Haiku:
284 AddPath("/boot/system/non-packaged/develop/headers", System, false);
285 AddPath("/boot/system/develop/headers/os", System, false);
286 AddPath("/boot/system/develop/headers/os/app", System, false);
287 AddPath("/boot/system/develop/headers/os/arch", System, false);
288 AddPath("/boot/system/develop/headers/os/device", System, false);
289 AddPath("/boot/system/develop/headers/os/drivers", System, false);
290 AddPath("/boot/system/develop/headers/os/game", System, false);
291 AddPath("/boot/system/develop/headers/os/interface", System, false);
292 AddPath("/boot/system/develop/headers/os/kernel", System, false);
293 AddPath("/boot/system/develop/headers/os/locale", System, false);
294 AddPath("/boot/system/develop/headers/os/mail", System, false);
295 AddPath("/boot/system/develop/headers/os/media", System, false);
296 AddPath("/boot/system/develop/headers/os/midi", System, false);
297 AddPath("/boot/system/develop/headers/os/midi2", System, false);
298 AddPath("/boot/system/develop/headers/os/net", System, false);
299 AddPath("/boot/system/develop/headers/os/opengl", System, false);
300 AddPath("/boot/system/develop/headers/os/storage", System, false);
301 AddPath("/boot/system/develop/headers/os/support", System, false);
302 AddPath("/boot/system/develop/headers/os/translation", System, false);
303 AddPath("/boot/system/develop/headers/os/add-ons/graphics", System, false);
304 AddPath("/boot/system/develop/headers/os/add-ons/input_server", System, false);
305 AddPath("/boot/system/develop/headers/os/add-ons/mail_daemon", System, false);
306 AddPath("/boot/system/develop/headers/os/add-ons/registrar", System, false);
307 AddPath("/boot/system/develop/headers/os/add-ons/screen_saver", System, false);
308 AddPath("/boot/system/develop/headers/os/add-ons/tracker", System, false);
309 AddPath("/boot/system/develop/headers/os/be_apps/Deskbar", System, false);
310 AddPath("/boot/system/develop/headers/os/be_apps/NetPositive", System, false);
311 AddPath("/boot/system/develop/headers/os/be_apps/Tracker", System, false);
312 AddPath("/boot/system/develop/headers/3rdparty", System, false);
313 AddPath("/boot/system/develop/headers/bsd", System, false);
314 AddPath("/boot/system/develop/headers/glibc", System, false);
315 AddPath("/boot/system/develop/headers/posix", System, false);
316 AddPath("/boot/system/develop/headers", System, false);
317 break;
318 case llvm::Triple::RTEMS:
319 break;
320 case llvm::Triple::Win32:
321 switch (triple.getEnvironment()) {
322 default: llvm_unreachable("Include management is handled in the driver.");
323 case llvm::Triple::Cygnus:
324 AddPath("/usr/include/w32api", System, false);
325 break;
326 case llvm::Triple::GNU:
327 break;
328 }
329 break;
330 default:
331 break;
332 }
333
334 switch (os) {
335 case llvm::Triple::CloudABI:
336 case llvm::Triple::RTEMS:
337 case llvm::Triple::NaCl:
338 case llvm::Triple::ELFIAMCU:
339 case llvm::Triple::Fuchsia:
340 break;
341 case llvm::Triple::PS4: {
342 // <isysroot> gets prepended later in AddPath().
343 std::string BaseSDKPath = "";
344 if (!HasSysroot) {
345 const char *envValue = getenv("SCE_ORBIS_SDK_DIR");
346 if (envValue)
347 BaseSDKPath = envValue;
348 else {
349 // HSOpts.ResourceDir variable contains the location of Clang's
350 // resource files.
351 // Assuming that Clang is configured for PS4 without
352 // --with-clang-resource-dir option, the location of Clang's resource
353 // files is <SDK_DIR>/host_tools/lib/clang
354 SmallString<128> P = StringRef(HSOpts.ResourceDir);
355 llvm::sys::path::append(P, "../../..");
356 BaseSDKPath = std::string(P.str());
357 }
358 }
359 AddPath(BaseSDKPath + "/target/include", System, false);
360 if (triple.isPS4CPU())
361 AddPath(BaseSDKPath + "/target/include_common", System, false);
362 LLVM_FALLTHROUGH;
363 }
364 default:
365 AddPath("/usr/include", ExternCSystem, false);
366 break;
367 }
368 }
369
370 void InitHeaderSearch::AddDefaultCPlusPlusIncludePaths(
371 const LangOptions &LangOpts, const llvm::Triple &triple,
372 const HeaderSearchOptions &HSOpts) {
373 llvm::Triple::OSType os = triple.getOS();
374 // FIXME: temporary hack: hard-coded paths.
375
376 if (triple.isOSDarwin()) {
377 llvm_unreachable("Include management is handled in the driver.");
378 }
379
380 switch (os) {
381 case llvm::Triple::Linux:
382 case llvm::Triple::Hurd:
383 case llvm::Triple::Solaris:
384 llvm_unreachable("Include management is handled in the driver.");
385 break;
386 case llvm::Triple::Win32:
387 switch (triple.getEnvironment()) {
388 default: llvm_unreachable("Include management is handled in the driver.");
389 case llvm::Triple::Cygnus:
390 // Cygwin-1.7
391 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.7.3");
392 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.5.3");
393 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.4");
394 // g++-4 / Cygwin-1.5
395 AddMinGWCPlusPlusIncludePaths("/usr/lib/gcc", "i686-pc-cygwin", "4.3.2");
396 break;
397 }
398 break;
399 case llvm::Triple::DragonFly:
400 AddPath("/usr/include/c++/5.0", CXXSystem, false);
401 break;
402 case llvm::Triple::Minix:
403 AddGnuCPlusPlusIncludePaths("/usr/gnu/include/c++/4.4.3",
404 "", "", "", triple);
405 break;
406 default:
407 break;
408 }
409 }
410
411 void InitHeaderSearch::AddDefaultIncludePaths(const LangOptions &Lang,
412 const llvm::Triple &triple,
413 const HeaderSearchOptions &HSOpts) {
414 // NB: This code path is going away. All of the logic is moving into the
415 // driver which has the information necessary to do target-specific
416 // selections of default include paths. Each target which moves there will be
417 // exempted from this logic here until we can delete the entire pile of code.
418 switch (triple.getOS()) {
419 default:
420 break; // Everything else continues to use this routine's logic.
421
422 case llvm::Triple::Emscripten:
423 case llvm::Triple::Linux:
424 case llvm::Triple::Hurd:
425 case llvm::Triple::Solaris:
426 case llvm::Triple::WASI:
427 return;
428
429 case llvm::Triple::Win32:
430 if (triple.getEnvironment() != llvm::Triple::Cygnus ||
431 triple.isOSBinFormatMachO())
432 return;
433 break;
434
435 case llvm::Triple::UnknownOS:
436 if (triple.getArch() == llvm::Triple::wasm32 ||
437 triple.getArch() == llvm::Triple::wasm64)
438 return;
439 break;
440 }
441
442 // All header search logic is handled in the Driver for Darwin.
443 if (triple.isOSDarwin()) {
444 if (HSOpts.UseStandardSystemIncludes) {
445 // Add the default framework include paths on Darwin.
446 AddPath("/System/Library/Frameworks", System, true);
447 AddPath("/Library/Frameworks", System, true);
448 }
449 return;
450 }
451
452 if (Lang.CPlusPlus && !Lang.AsmPreprocessor &&
453 HSOpts.UseStandardCXXIncludes && HSOpts.UseStandardSystemIncludes) {
454 if (HSOpts.UseLibcxx) {
455 AddPath("/usr/include/c++/v1", CXXSystem, false);
456 } else {
457 AddDefaultCPlusPlusIncludePaths(Lang, triple, HSOpts);
458 }
459 }
460
461 AddDefaultCIncludePaths(triple, HSOpts);
462 }
463
464 /// RemoveDuplicates - If there are duplicate directory entries in the specified
465 /// search list, remove the later (dead) ones. Returns the number of non-system
466 /// headers removed, which is used to update NumAngled.
467 static unsigned RemoveDuplicates(std::vector<DirectoryLookup> &SearchList,
468 unsigned First, bool Verbose) {
469 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenDirs;
470 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenFrameworkDirs;
471 llvm::SmallPtrSet<const HeaderMap *, 8> SeenHeaderMaps;
472 unsigned NonSystemRemoved = 0;
473 for (unsigned i = First; i != SearchList.size(); ++i) {
474 unsigned DirToRemove = i;
475
476 const DirectoryLookup &CurEntry = SearchList[i];
477
478 if (CurEntry.isNormalDir()) {
479 // If this isn't the first time we've seen this dir, remove it.
480 if (SeenDirs.insert(CurEntry.getDir()).second)
481 continue;
482 } else if (CurEntry.isFramework()) {
483 // If this isn't the first time we've seen this framework dir, remove it.
484 if (SeenFrameworkDirs.insert(CurEntry.getFrameworkDir()).second)
485 continue;
486 } else {
487 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?");
488 // If this isn't the first time we've seen this headermap, remove it.
489 if (SeenHeaderMaps.insert(CurEntry.getHeaderMap()).second)
490 continue;
491 }
492
493 // If we have a normal #include dir/framework/headermap that is shadowed
494 // later in the chain by a system include location, we actually want to
495 // ignore the user's request and drop the user dir... keeping the system
496 // dir. This is weird, but required to emulate GCC's search path correctly.
497 //
498 // Since dupes of system dirs are rare, just rescan to find the original
499 // that we're nuking instead of using a DenseMap.
500 if (CurEntry.getDirCharacteristic() != SrcMgr::C_User) {
501 // Find the dir that this is the same of.
502 unsigned FirstDir;
503 for (FirstDir = First;; ++FirstDir) {
504 assert(FirstDir != i && "Didn't find dupe?");
505
506 const DirectoryLookup &SearchEntry = SearchList[FirstDir];
507
508 // If these are different lookup types, then they can't be the dupe.
509 if (SearchEntry.getLookupType() != CurEntry.getLookupType())
510 continue;
511
512 bool isSame;
513 if (CurEntry.isNormalDir())
514 isSame = SearchEntry.getDir() == CurEntry.getDir();
515 else if (CurEntry.isFramework())
516 isSame = SearchEntry.getFrameworkDir() == CurEntry.getFrameworkDir();
517 else {
518 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?");
519 isSame = SearchEntry.getHeaderMap() == CurEntry.getHeaderMap();
520 }
521
522 if (isSame)
523 break;
524 }
525
526 // If the first dir in the search path is a non-system dir, zap it
527 // instead of the system one.
528 if (SearchList[FirstDir].getDirCharacteristic() == SrcMgr::C_User)
529 DirToRemove = FirstDir;
530 }
531
532 if (Verbose) {
533 llvm::errs() << "ignoring duplicate directory \""
534 << CurEntry.getName() << "\"\n";
535 if (DirToRemove != i)
536 llvm::errs() << " as it is a non-system directory that duplicates "
537 << "a system directory\n";
538 }
539 if (DirToRemove != i)
540 ++NonSystemRemoved;
541
542 // This is reached if the current entry is a duplicate. Remove the
543 // DirToRemove (usually the current dir).
544 SearchList.erase(SearchList.begin()+DirToRemove);
545 --i;
546 }
547 return NonSystemRemoved;
548 }
549
550
551 void InitHeaderSearch::Realize(const LangOptions &Lang) {
552 // Concatenate ANGLE+SYSTEM+AFTER chains together into SearchList.
553 std::vector<DirectoryLookup> SearchList;
554 SearchList.reserve(IncludePath.size());
555
556 // Quoted arguments go first.
557 for (auto &Include : IncludePath)
558 if (Include.first == Quoted)
559 SearchList.push_back(Include.second);
560
561 // Deduplicate and remember index.
562 RemoveDuplicates(SearchList, 0, Verbose);
563 unsigned NumQuoted = SearchList.size();
564
565 for (auto &Include : IncludePath)
566 if (Include.first == Angled || Include.first == IndexHeaderMap)
567 SearchList.push_back(Include.second);
568
569 RemoveDuplicates(SearchList, NumQuoted, Verbose);
570 unsigned NumAngled = SearchList.size();
571
572 for (auto &Include : IncludePath)
573 if (Include.first == System || Include.first == ExternCSystem ||
574 (!Lang.ObjC && !Lang.CPlusPlus && Include.first == CSystem) ||
575 (/*FIXME !Lang.ObjC && */ Lang.CPlusPlus &&
576 Include.first == CXXSystem) ||
577 (Lang.ObjC && !Lang.CPlusPlus && Include.first == ObjCSystem) ||
578 (Lang.ObjC && Lang.CPlusPlus && Include.first == ObjCXXSystem))
579 SearchList.push_back(Include.second);
580
581 for (auto &Include : IncludePath)
582 if (Include.first == After)
583 SearchList.push_back(Include.second);
584
585 // Remove duplicates across both the Angled and System directories. GCC does
586 // this and failing to remove duplicates across these two groups breaks
587 // #include_next.
588 unsigned NonSystemRemoved = RemoveDuplicates(SearchList, NumQuoted, Verbose);
589 NumAngled -= NonSystemRemoved;
590
591 bool DontSearchCurDir = false; // TODO: set to true if -I- is set?
592 Headers.SetSearchPaths(SearchList, NumQuoted, NumAngled, DontSearchCurDir);
593
594 Headers.SetSystemHeaderPrefixes(SystemHeaderPrefixes);
595
596 // If verbose, print the list of directories that will be searched.
597 if (Verbose) {
598 llvm::errs() << "#include \"...\" search starts here:\n";
599 for (unsigned i = 0, e = SearchList.size(); i != e; ++i) {
600 if (i == NumQuoted)
601 llvm::errs() << "#include <...> search starts here:\n";
602 StringRef Name = SearchList[i].getName();
603 const char *Suffix;
604 if (SearchList[i].isNormalDir())
605 Suffix = "";
606 else if (SearchList[i].isFramework())
607 Suffix = " (framework directory)";
608 else {
609 assert(SearchList[i].isHeaderMap() && "Unknown DirectoryLookup");
610 Suffix = " (headermap)";
611 }
612 llvm::errs() << " " << Name << Suffix << "\n";
613 }
614 llvm::errs() << "End of search list.\n";
615 }
616 }
617
618 void clang::ApplyHeaderSearchOptions(HeaderSearch &HS,
619 const HeaderSearchOptions &HSOpts,
620 const LangOptions &Lang,
621 const llvm::Triple &Triple) {
622 InitHeaderSearch Init(HS, HSOpts.Verbose, HSOpts.Sysroot);
623
624 // Add the user defined entries.
625 for (unsigned i = 0, e = HSOpts.UserEntries.size(); i != e; ++i) {
626 const HeaderSearchOptions::Entry &E = HSOpts.UserEntries[i];
627 if (E.IgnoreSysRoot) {
628 Init.AddUnmappedPath(E.Path, E.Group, E.IsFramework);
629 } else {
630 Init.AddPath(E.Path, E.Group, E.IsFramework);
631 }
632 }
633
634 Init.AddDefaultIncludePaths(Lang, Triple, HSOpts);
635
636 for (unsigned i = 0, e = HSOpts.SystemHeaderPrefixes.size(); i != e; ++i)
637 Init.AddSystemHeaderPrefix(HSOpts.SystemHeaderPrefixes[i].Prefix,
638 HSOpts.SystemHeaderPrefixes[i].IsSystemHeader);
639
640 if (HSOpts.UseBuiltinIncludes) {
641 // Set up the builtin include directory in the module map.
642 SmallString<128> P = StringRef(HSOpts.ResourceDir);
643 llvm::sys::path::append(P, "include");
644 if (auto Dir = HS.getFileMgr().getDirectory(P))
645 HS.getModuleMap().setBuiltinIncludeDir(*Dir);
646 }
647
648 Init.Realize(Lang);
649 }