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/InitHeaderSearch.h"
15#include "clang/Lex/HeaderSearch.h"
16#include "clang/Basic/FileManager.h"
17#include "clang/Basic/LangOptions.h"
18#include "llvm/ADT/SmallString.h"
19#include "llvm/ADT/SmallPtrSet.h"
20#include "llvm/System/Path.h"
21#include "llvm/Config/config.h"
22#include <cstdio>
23#include <vector>
24using namespace clang;
25
26void InitHeaderSearch::AddPath(const std::string &Path, IncludeDirGroup Group,
27 bool isCXXAware, bool isUserSupplied,
28 bool isFramework, bool IgnoreSysRoot) {
29 assert(!Path.empty() && "can't handle empty path here");
30 FileManager &FM = Headers.getFileMgr();
31
32 // Compute the actual path, taking into consideration -isysroot.
33 llvm::SmallString<256> MappedPath;
34
35 // Handle isysroot.
36 if (Group == System && !IgnoreSysRoot) {
37 // FIXME: Portability. This should be a sys::Path interface, this doesn't
38 // handle things like C:\ right, nor win32 \\network\device\blah.
39 if (isysroot.size() != 1 || isysroot[0] != '/') // Add isysroot if present.
40 MappedPath.append(isysroot.begin(), isysroot.end());
41 }
42
43 MappedPath.append(Path.begin(), Path.end());
44
45 // Compute the DirectoryLookup type.
46 SrcMgr::CharacteristicKind Type;
47 if (Group == Quoted || Group == Angled)
48 Type = SrcMgr::C_User;
49 else if (isCXXAware)
50 Type = SrcMgr::C_System;
51 else
52 Type = SrcMgr::C_ExternCSystem;
53
54
55 // If the directory exists, add it.
56 if (const DirectoryEntry *DE = FM.getDirectory(&MappedPath[0],
57 &MappedPath[0]+
58 MappedPath.size())) {
59 IncludeGroup[Group].push_back(DirectoryLookup(DE, Type, isUserSupplied,
60 isFramework));
61 return;
62 }
63
64 // Check to see if this is an apple-style headermap (which are not allowed to
65 // be frameworks).
66 if (!isFramework) {
67 if (const FileEntry *FE = FM.getFile(&MappedPath[0],
68 &MappedPath[0]+MappedPath.size())) {
69 if (const HeaderMap *HM = Headers.CreateHeaderMap(FE)) {
70 // It is a headermap, add it to the search path.
71 IncludeGroup[Group].push_back(DirectoryLookup(HM, Type,isUserSupplied));
72 return;
73 }
74 }
75 }
76
77 if (Verbose)
78 fprintf(stderr, "ignoring nonexistent directory \"%s\"\n",
79 MappedPath.c_str());
80}
81
82
83void InitHeaderSearch::AddEnvVarPaths(const char *Name) {
84 const char* at = getenv(Name);
85 if (!at || *at == 0) // Empty string should not add '.' path.
86 return;
87
88 const char* delim = strchr(at, llvm::sys::PathSeparator);
89 while (delim != 0) {
90 if (delim-at == 0)
91 AddPath(".", Angled, false, true, false);
92 else
93 AddPath(std::string(at, std::string::size_type(delim-at)), Angled, false,
94 true, false);
95 at = delim + 1;
96 delim = strchr(at, llvm::sys::PathSeparator);
97 }
98 if (*at == 0)
99 AddPath(".", Angled, false, true, false);
100 else
101 AddPath(at, Angled, false, true, false);
102}
103
104
105void InitHeaderSearch::AddDefaultSystemIncludePaths(const LangOptions &Lang) {
106 // FIXME: temporary hack: hard-coded paths.
107 // FIXME: get these from the target?
108
109#ifdef LLVM_ON_WIN32
110 if (Lang.CPlusPlus) {
111 // Mingw32 GCC version 4
112 AddPath("c:/mingw/lib/gcc/mingw32/4.3.0/include/c++",
113 System, true, false, false);
114 AddPath("c:/mingw/lib/gcc/mingw32/4.3.0/include/c++/mingw32",
115 System, true, false, false);
116 AddPath("c:/mingw/lib/gcc/mingw32/4.3.0/include/c++/backward",
117 System, true, false, false);
118 }
119
120 // Mingw32 GCC version 4
121 AddPath("C:/mingw/include", System, false, false, false);
122#else
123
124 if (Lang.CPlusPlus) {
125 AddPath("/usr/include/c++/4.2.1", System, true, false, false);
126 AddPath("/usr/include/c++/4.2.1/i686-apple-darwin10", System, true, false,
127 false);
128 AddPath("/usr/include/c++/4.2.1/backward", System, true, false, false);
129
130 AddPath("/usr/include/c++/4.0.0", System, true, false, false);
131 AddPath("/usr/include/c++/4.0.0/i686-apple-darwin8", System, true, false,
132 false);
133 AddPath("/usr/include/c++/4.0.0/backward", System, true, false, false);
134
135 // Ubuntu 7.10 - Gutsy Gibbon
136 AddPath("/usr/include/c++/4.1.3", System, true, false, false);
137 AddPath("/usr/include/c++/4.1.3/i486-linux-gnu", System, true, false,
138 false);
139 AddPath("/usr/include/c++/4.1.3/backward", System, true, false, false);
140
141 // Ubuntu 9.04
142 AddPath("/usr/include/c++/4.3.3", System, true, false, false);
143 AddPath("/usr/include/c++/4.3.3/x86_64-linux-gnu/", System, true, false,
144 false);
145 AddPath("/usr/include/c++/4.3.3/backward", System, true, false, false);
146
147 // Fedora 8
148 AddPath("/usr/include/c++/4.1.2", System, true, false, false);
149 AddPath("/usr/include/c++/4.1.2/i386-redhat-linux", System, true, false,
150 false);
151 AddPath("/usr/include/c++/4.1.2/backward", System, true, false, false);
152
153 // Fedora 9
154 AddPath("/usr/include/c++/4.3.0", System, true, false, false);
155 AddPath("/usr/include/c++/4.3.0/i386-redhat-linux", System, true, false,
156 false);
157 AddPath("/usr/include/c++/4.3.0/backward", System, true, false, false);
158
159 // Fedora 10
160 AddPath("/usr/include/c++/4.3.2", System, true, false, false);
161 AddPath("/usr/include/c++/4.3.2/i386-redhat-linux", System, true, false,
162 false);
163 AddPath("/usr/include/c++/4.3.2/backward", System, true, false, false);
164
165 // Arch Linux 2008-06-24
166 AddPath("/usr/include/c++/4.3.1", System, true, false, false);
167 AddPath("/usr/include/c++/4.3.1/i686-pc-linux-gnu", System, true, false,
168 false);
169 AddPath("/usr/include/c++/4.3.1/backward", System, true, false, false);
170 AddPath("/usr/include/c++/4.3.1/x86_64-unknown-linux-gnu", System, true,
171 false, false);
172
173 // Gentoo x86 stable
174 AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4", System,
175 true, false, false);
176 AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4/"
177 "i686-pc-linux-gnu", System, true, false, false);
178 AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4/backward",
179 System, true, false, false);
180
| 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/InitHeaderSearch.h"
15#include "clang/Lex/HeaderSearch.h"
16#include "clang/Basic/FileManager.h"
17#include "clang/Basic/LangOptions.h"
18#include "llvm/ADT/SmallString.h"
19#include "llvm/ADT/SmallPtrSet.h"
20#include "llvm/System/Path.h"
21#include "llvm/Config/config.h"
22#include <cstdio>
23#include <vector>
24using namespace clang;
25
26void InitHeaderSearch::AddPath(const std::string &Path, IncludeDirGroup Group,
27 bool isCXXAware, bool isUserSupplied,
28 bool isFramework, bool IgnoreSysRoot) {
29 assert(!Path.empty() && "can't handle empty path here");
30 FileManager &FM = Headers.getFileMgr();
31
32 // Compute the actual path, taking into consideration -isysroot.
33 llvm::SmallString<256> MappedPath;
34
35 // Handle isysroot.
36 if (Group == System && !IgnoreSysRoot) {
37 // FIXME: Portability. This should be a sys::Path interface, this doesn't
38 // handle things like C:\ right, nor win32 \\network\device\blah.
39 if (isysroot.size() != 1 || isysroot[0] != '/') // Add isysroot if present.
40 MappedPath.append(isysroot.begin(), isysroot.end());
41 }
42
43 MappedPath.append(Path.begin(), Path.end());
44
45 // Compute the DirectoryLookup type.
46 SrcMgr::CharacteristicKind Type;
47 if (Group == Quoted || Group == Angled)
48 Type = SrcMgr::C_User;
49 else if (isCXXAware)
50 Type = SrcMgr::C_System;
51 else
52 Type = SrcMgr::C_ExternCSystem;
53
54
55 // If the directory exists, add it.
56 if (const DirectoryEntry *DE = FM.getDirectory(&MappedPath[0],
57 &MappedPath[0]+
58 MappedPath.size())) {
59 IncludeGroup[Group].push_back(DirectoryLookup(DE, Type, isUserSupplied,
60 isFramework));
61 return;
62 }
63
64 // Check to see if this is an apple-style headermap (which are not allowed to
65 // be frameworks).
66 if (!isFramework) {
67 if (const FileEntry *FE = FM.getFile(&MappedPath[0],
68 &MappedPath[0]+MappedPath.size())) {
69 if (const HeaderMap *HM = Headers.CreateHeaderMap(FE)) {
70 // It is a headermap, add it to the search path.
71 IncludeGroup[Group].push_back(DirectoryLookup(HM, Type,isUserSupplied));
72 return;
73 }
74 }
75 }
76
77 if (Verbose)
78 fprintf(stderr, "ignoring nonexistent directory \"%s\"\n",
79 MappedPath.c_str());
80}
81
82
83void InitHeaderSearch::AddEnvVarPaths(const char *Name) {
84 const char* at = getenv(Name);
85 if (!at || *at == 0) // Empty string should not add '.' path.
86 return;
87
88 const char* delim = strchr(at, llvm::sys::PathSeparator);
89 while (delim != 0) {
90 if (delim-at == 0)
91 AddPath(".", Angled, false, true, false);
92 else
93 AddPath(std::string(at, std::string::size_type(delim-at)), Angled, false,
94 true, false);
95 at = delim + 1;
96 delim = strchr(at, llvm::sys::PathSeparator);
97 }
98 if (*at == 0)
99 AddPath(".", Angled, false, true, false);
100 else
101 AddPath(at, Angled, false, true, false);
102}
103
104
105void InitHeaderSearch::AddDefaultSystemIncludePaths(const LangOptions &Lang) {
106 // FIXME: temporary hack: hard-coded paths.
107 // FIXME: get these from the target?
108
109#ifdef LLVM_ON_WIN32
110 if (Lang.CPlusPlus) {
111 // Mingw32 GCC version 4
112 AddPath("c:/mingw/lib/gcc/mingw32/4.3.0/include/c++",
113 System, true, false, false);
114 AddPath("c:/mingw/lib/gcc/mingw32/4.3.0/include/c++/mingw32",
115 System, true, false, false);
116 AddPath("c:/mingw/lib/gcc/mingw32/4.3.0/include/c++/backward",
117 System, true, false, false);
118 }
119
120 // Mingw32 GCC version 4
121 AddPath("C:/mingw/include", System, false, false, false);
122#else
123
124 if (Lang.CPlusPlus) {
125 AddPath("/usr/include/c++/4.2.1", System, true, false, false);
126 AddPath("/usr/include/c++/4.2.1/i686-apple-darwin10", System, true, false,
127 false);
128 AddPath("/usr/include/c++/4.2.1/backward", System, true, false, false);
129
130 AddPath("/usr/include/c++/4.0.0", System, true, false, false);
131 AddPath("/usr/include/c++/4.0.0/i686-apple-darwin8", System, true, false,
132 false);
133 AddPath("/usr/include/c++/4.0.0/backward", System, true, false, false);
134
135 // Ubuntu 7.10 - Gutsy Gibbon
136 AddPath("/usr/include/c++/4.1.3", System, true, false, false);
137 AddPath("/usr/include/c++/4.1.3/i486-linux-gnu", System, true, false,
138 false);
139 AddPath("/usr/include/c++/4.1.3/backward", System, true, false, false);
140
141 // Ubuntu 9.04
142 AddPath("/usr/include/c++/4.3.3", System, true, false, false);
143 AddPath("/usr/include/c++/4.3.3/x86_64-linux-gnu/", System, true, false,
144 false);
145 AddPath("/usr/include/c++/4.3.3/backward", System, true, false, false);
146
147 // Fedora 8
148 AddPath("/usr/include/c++/4.1.2", System, true, false, false);
149 AddPath("/usr/include/c++/4.1.2/i386-redhat-linux", System, true, false,
150 false);
151 AddPath("/usr/include/c++/4.1.2/backward", System, true, false, false);
152
153 // Fedora 9
154 AddPath("/usr/include/c++/4.3.0", System, true, false, false);
155 AddPath("/usr/include/c++/4.3.0/i386-redhat-linux", System, true, false,
156 false);
157 AddPath("/usr/include/c++/4.3.0/backward", System, true, false, false);
158
159 // Fedora 10
160 AddPath("/usr/include/c++/4.3.2", System, true, false, false);
161 AddPath("/usr/include/c++/4.3.2/i386-redhat-linux", System, true, false,
162 false);
163 AddPath("/usr/include/c++/4.3.2/backward", System, true, false, false);
164
165 // Arch Linux 2008-06-24
166 AddPath("/usr/include/c++/4.3.1", System, true, false, false);
167 AddPath("/usr/include/c++/4.3.1/i686-pc-linux-gnu", System, true, false,
168 false);
169 AddPath("/usr/include/c++/4.3.1/backward", System, true, false, false);
170 AddPath("/usr/include/c++/4.3.1/x86_64-unknown-linux-gnu", System, true,
171 false, false);
172
173 // Gentoo x86 stable
174 AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4", System,
175 true, false, false);
176 AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4/"
177 "i686-pc-linux-gnu", System, true, false, false);
178 AddPath("/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/include/g++-v4/backward",
179 System, true, false, false);
180
|
181 // DragonFly
182 AddPath("/usr/include/c++/4.1", System, true, false, false);
183
184 // FreeBSD
185 AddPath("/usr/include/c++/4.2", System, true, false, false);
186 }
187
188 AddPath("/usr/local/include", System, false, false, false);
189
190 AddPath("/usr/include", System, false, false, false);
191 AddPath("/System/Library/Frameworks", System, true, false, true);
192 AddPath("/Library/Frameworks", System, true, false, true);
193#endif
194}
195
196void InitHeaderSearch::AddDefaultEnvVarPaths(const LangOptions &Lang) {
197 AddEnvVarPaths("CPATH");
198 if (Lang.CPlusPlus && Lang.ObjC1)
199 AddEnvVarPaths("OBJCPLUS_INCLUDE_PATH");
200 else if (Lang.CPlusPlus)
201 AddEnvVarPaths("CPLUS_INCLUDE_PATH");
202 else if (Lang.ObjC1)
203 AddEnvVarPaths("OBJC_INCLUDE_PATH");
204 else
205 AddEnvVarPaths("C_INCLUDE_PATH");
206}
207
208
209/// RemoveDuplicates - If there are duplicate directory entries in the specified
210/// search list, remove the later (dead) ones.
211static void RemoveDuplicates(std::vector<DirectoryLookup> &SearchList,
212 bool Verbose) {
213 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenDirs;
214 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenFrameworkDirs;
215 llvm::SmallPtrSet<const HeaderMap *, 8> SeenHeaderMaps;
216 for (unsigned i = 0; i != SearchList.size(); ++i) {
217 unsigned DirToRemove = i;
218
219 const DirectoryLookup &CurEntry = SearchList[i];
220
221 if (CurEntry.isNormalDir()) {
222 // If this isn't the first time we've seen this dir, remove it.
223 if (SeenDirs.insert(CurEntry.getDir()))
224 continue;
225 } else if (CurEntry.isFramework()) {
226 // If this isn't the first time we've seen this framework dir, remove it.
227 if (SeenFrameworkDirs.insert(CurEntry.getFrameworkDir()))
228 continue;
229 } else {
230 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?");
231 // If this isn't the first time we've seen this headermap, remove it.
232 if (SeenHeaderMaps.insert(CurEntry.getHeaderMap()))
233 continue;
234 }
235
236 // If we have a normal #include dir/framework/headermap that is shadowed
237 // later in the chain by a system include location, we actually want to
238 // ignore the user's request and drop the user dir... keeping the system
239 // dir. This is weird, but required to emulate GCC's search path correctly.
240 //
241 // Since dupes of system dirs are rare, just rescan to find the original
242 // that we're nuking instead of using a DenseMap.
243 if (CurEntry.getDirCharacteristic() != SrcMgr::C_User) {
244 // Find the dir that this is the same of.
245 unsigned FirstDir;
246 for (FirstDir = 0; ; ++FirstDir) {
247 assert(FirstDir != i && "Didn't find dupe?");
248
249 const DirectoryLookup &SearchEntry = SearchList[FirstDir];
250
251 // If these are different lookup types, then they can't be the dupe.
252 if (SearchEntry.getLookupType() != CurEntry.getLookupType())
253 continue;
254
255 bool isSame;
256 if (CurEntry.isNormalDir())
257 isSame = SearchEntry.getDir() == CurEntry.getDir();
258 else if (CurEntry.isFramework())
259 isSame = SearchEntry.getFrameworkDir() == CurEntry.getFrameworkDir();
260 else {
261 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?");
262 isSame = SearchEntry.getHeaderMap() == CurEntry.getHeaderMap();
263 }
264
265 if (isSame)
266 break;
267 }
268
269 // If the first dir in the search path is a non-system dir, zap it
270 // instead of the system one.
271 if (SearchList[FirstDir].getDirCharacteristic() == SrcMgr::C_User)
272 DirToRemove = FirstDir;
273 }
274
275 if (Verbose) {
276 fprintf(stderr, "ignoring duplicate directory \"%s\"\n",
277 CurEntry.getName());
278 if (DirToRemove != i)
279 fprintf(stderr, " as it is a non-system directory that duplicates"
280 " a system directory\n");
281 }
282
283 // This is reached if the current entry is a duplicate. Remove the
284 // DirToRemove (usually the current dir).
285 SearchList.erase(SearchList.begin()+DirToRemove);
286 --i;
287 }
288}
289
290
291void InitHeaderSearch::Realize() {
292 // Concatenate ANGLE+SYSTEM+AFTER chains together into SearchList.
293 std::vector<DirectoryLookup> SearchList;
294 SearchList = IncludeGroup[Angled];
295 SearchList.insert(SearchList.end(), IncludeGroup[System].begin(),
296 IncludeGroup[System].end());
297 SearchList.insert(SearchList.end(), IncludeGroup[After].begin(),
298 IncludeGroup[After].end());
299 RemoveDuplicates(SearchList, Verbose);
300 RemoveDuplicates(IncludeGroup[Quoted], Verbose);
301
302 // Prepend QUOTED list on the search list.
303 SearchList.insert(SearchList.begin(), IncludeGroup[Quoted].begin(),
304 IncludeGroup[Quoted].end());
305
306
307 bool DontSearchCurDir = false; // TODO: set to true if -I- is set?
308 Headers.SetSearchPaths(SearchList, IncludeGroup[Quoted].size(),
309 DontSearchCurDir);
310
311 // If verbose, print the list of directories that will be searched.
312 if (Verbose) {
313 fprintf(stderr, "#include \"...\" search starts here:\n");
314 unsigned QuotedIdx = IncludeGroup[Quoted].size();
315 for (unsigned i = 0, e = SearchList.size(); i != e; ++i) {
316 if (i == QuotedIdx)
317 fprintf(stderr, "#include <...> search starts here:\n");
318 const char *Name = SearchList[i].getName();
319 const char *Suffix;
320 if (SearchList[i].isNormalDir())
321 Suffix = "";
322 else if (SearchList[i].isFramework())
323 Suffix = " (framework directory)";
324 else {
325 assert(SearchList[i].isHeaderMap() && "Unknown DirectoryLookup");
326 Suffix = " (headermap)";
327 }
328 fprintf(stderr, " %s%s\n", Name, Suffix);
329 }
330 fprintf(stderr, "End of search list.\n");
331 }
332}
333
| 189 // DragonFly
190 AddPath("/usr/include/c++/4.1", System, true, false, false);
191
192 // FreeBSD
193 AddPath("/usr/include/c++/4.2", System, true, false, false);
194 }
195
196 AddPath("/usr/local/include", System, false, false, false);
197
198 AddPath("/usr/include", System, false, false, false);
199 AddPath("/System/Library/Frameworks", System, true, false, true);
200 AddPath("/Library/Frameworks", System, true, false, true);
201#endif
202}
203
204void InitHeaderSearch::AddDefaultEnvVarPaths(const LangOptions &Lang) {
205 AddEnvVarPaths("CPATH");
206 if (Lang.CPlusPlus && Lang.ObjC1)
207 AddEnvVarPaths("OBJCPLUS_INCLUDE_PATH");
208 else if (Lang.CPlusPlus)
209 AddEnvVarPaths("CPLUS_INCLUDE_PATH");
210 else if (Lang.ObjC1)
211 AddEnvVarPaths("OBJC_INCLUDE_PATH");
212 else
213 AddEnvVarPaths("C_INCLUDE_PATH");
214}
215
216
217/// RemoveDuplicates - If there are duplicate directory entries in the specified
218/// search list, remove the later (dead) ones.
219static void RemoveDuplicates(std::vector<DirectoryLookup> &SearchList,
220 bool Verbose) {
221 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenDirs;
222 llvm::SmallPtrSet<const DirectoryEntry *, 8> SeenFrameworkDirs;
223 llvm::SmallPtrSet<const HeaderMap *, 8> SeenHeaderMaps;
224 for (unsigned i = 0; i != SearchList.size(); ++i) {
225 unsigned DirToRemove = i;
226
227 const DirectoryLookup &CurEntry = SearchList[i];
228
229 if (CurEntry.isNormalDir()) {
230 // If this isn't the first time we've seen this dir, remove it.
231 if (SeenDirs.insert(CurEntry.getDir()))
232 continue;
233 } else if (CurEntry.isFramework()) {
234 // If this isn't the first time we've seen this framework dir, remove it.
235 if (SeenFrameworkDirs.insert(CurEntry.getFrameworkDir()))
236 continue;
237 } else {
238 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?");
239 // If this isn't the first time we've seen this headermap, remove it.
240 if (SeenHeaderMaps.insert(CurEntry.getHeaderMap()))
241 continue;
242 }
243
244 // If we have a normal #include dir/framework/headermap that is shadowed
245 // later in the chain by a system include location, we actually want to
246 // ignore the user's request and drop the user dir... keeping the system
247 // dir. This is weird, but required to emulate GCC's search path correctly.
248 //
249 // Since dupes of system dirs are rare, just rescan to find the original
250 // that we're nuking instead of using a DenseMap.
251 if (CurEntry.getDirCharacteristic() != SrcMgr::C_User) {
252 // Find the dir that this is the same of.
253 unsigned FirstDir;
254 for (FirstDir = 0; ; ++FirstDir) {
255 assert(FirstDir != i && "Didn't find dupe?");
256
257 const DirectoryLookup &SearchEntry = SearchList[FirstDir];
258
259 // If these are different lookup types, then they can't be the dupe.
260 if (SearchEntry.getLookupType() != CurEntry.getLookupType())
261 continue;
262
263 bool isSame;
264 if (CurEntry.isNormalDir())
265 isSame = SearchEntry.getDir() == CurEntry.getDir();
266 else if (CurEntry.isFramework())
267 isSame = SearchEntry.getFrameworkDir() == CurEntry.getFrameworkDir();
268 else {
269 assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?");
270 isSame = SearchEntry.getHeaderMap() == CurEntry.getHeaderMap();
271 }
272
273 if (isSame)
274 break;
275 }
276
277 // If the first dir in the search path is a non-system dir, zap it
278 // instead of the system one.
279 if (SearchList[FirstDir].getDirCharacteristic() == SrcMgr::C_User)
280 DirToRemove = FirstDir;
281 }
282
283 if (Verbose) {
284 fprintf(stderr, "ignoring duplicate directory \"%s\"\n",
285 CurEntry.getName());
286 if (DirToRemove != i)
287 fprintf(stderr, " as it is a non-system directory that duplicates"
288 " a system directory\n");
289 }
290
291 // This is reached if the current entry is a duplicate. Remove the
292 // DirToRemove (usually the current dir).
293 SearchList.erase(SearchList.begin()+DirToRemove);
294 --i;
295 }
296}
297
298
299void InitHeaderSearch::Realize() {
300 // Concatenate ANGLE+SYSTEM+AFTER chains together into SearchList.
301 std::vector<DirectoryLookup> SearchList;
302 SearchList = IncludeGroup[Angled];
303 SearchList.insert(SearchList.end(), IncludeGroup[System].begin(),
304 IncludeGroup[System].end());
305 SearchList.insert(SearchList.end(), IncludeGroup[After].begin(),
306 IncludeGroup[After].end());
307 RemoveDuplicates(SearchList, Verbose);
308 RemoveDuplicates(IncludeGroup[Quoted], Verbose);
309
310 // Prepend QUOTED list on the search list.
311 SearchList.insert(SearchList.begin(), IncludeGroup[Quoted].begin(),
312 IncludeGroup[Quoted].end());
313
314
315 bool DontSearchCurDir = false; // TODO: set to true if -I- is set?
316 Headers.SetSearchPaths(SearchList, IncludeGroup[Quoted].size(),
317 DontSearchCurDir);
318
319 // If verbose, print the list of directories that will be searched.
320 if (Verbose) {
321 fprintf(stderr, "#include \"...\" search starts here:\n");
322 unsigned QuotedIdx = IncludeGroup[Quoted].size();
323 for (unsigned i = 0, e = SearchList.size(); i != e; ++i) {
324 if (i == QuotedIdx)
325 fprintf(stderr, "#include <...> search starts here:\n");
326 const char *Name = SearchList[i].getName();
327 const char *Suffix;
328 if (SearchList[i].isNormalDir())
329 Suffix = "";
330 else if (SearchList[i].isFramework())
331 Suffix = " (framework directory)";
332 else {
333 assert(SearchList[i].isHeaderMap() && "Unknown DirectoryLookup");
334 Suffix = " (headermap)";
335 }
336 fprintf(stderr, " %s%s\n", Name, Suffix);
337 }
338 fprintf(stderr, "End of search list.\n");
339 }
340}
341
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