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0168a849 | 1 | /* Darwin support needed only by C/C++ frontends. |
fe9565ed | 2 | Copyright (C) 2001, 2003, 2004, 2005 Free Software Foundation, Inc. |
0168a849 SS |
3 | Contributed by Apple Computer Inc. |
4 | ||
7ec022b2 | 5 | This file is part of GCC. |
0168a849 | 6 | |
7ec022b2 | 7 | GCC is free software; you can redistribute it and/or modify |
0168a849 SS |
8 | it under the terms of the GNU General Public License as published by |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
7ec022b2 | 12 | GCC is distributed in the hope that it will be useful, |
0168a849 SS |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
7ec022b2 | 18 | along with GCC; see the file COPYING. If not, write to |
39d14dda KC |
19 | the Free Software Foundation, 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
0168a849 SS |
21 | |
22 | #include "config.h" | |
23 | #include "system.h" | |
4977bab6 ZW |
24 | #include "coretypes.h" |
25 | #include "tm.h" | |
0168a849 SS |
26 | #include "cpplib.h" |
27 | #include "tree.h" | |
28 | #include "c-pragma.h" | |
0168a849 | 29 | #include "c-tree.h" |
94d1613b | 30 | #include "c-incpath.h" |
10e6657a | 31 | #include "c-common.h" |
0168a849 | 32 | #include "toplev.h" |
43b3a5b1 | 33 | #include "flags.h" |
0168a849 | 34 | #include "tm_p.h" |
3dd53121 AP |
35 | #include "cppdefault.h" |
36 | #include "prefix.h" | |
0168a849 SS |
37 | |
38 | /* Pragmas. */ | |
39 | ||
76ad5c10 MS |
40 | #define BAD(gmsgid) do { warning (OPT_Wpragmas, gmsgid); return; } while (0) |
41 | #define BAD2(msgid, arg) do { warning (OPT_Wpragmas, msgid, arg); return; } while (0) | |
0168a849 | 42 | |
94d1613b MS |
43 | static bool using_frameworks = false; |
44 | ||
0168a849 SS |
45 | /* Maintain a small stack of alignments. This is similar to pragma |
46 | pack's stack, but simpler. */ | |
47 | ||
9c808aad AJ |
48 | static void push_field_alignment (int); |
49 | static void pop_field_alignment (void); | |
94d1613b MS |
50 | static const char *find_subframework_file (const char *, const char *); |
51 | static void add_system_framework_path (char *); | |
e3c287c9 MS |
52 | static const char *find_subframework_header (cpp_reader *pfile, const char *header, |
53 | cpp_dir **dirp); | |
0168a849 SS |
54 | |
55 | typedef struct align_stack | |
56 | { | |
57 | int alignment; | |
58 | struct align_stack * prev; | |
59 | } align_stack; | |
60 | ||
61 | static struct align_stack * field_align_stack = NULL; | |
62 | ||
63 | static void | |
9c808aad | 64 | push_field_alignment (int bit_alignment) |
0168a849 | 65 | { |
5ed6ace5 | 66 | align_stack *entry = XNEW (align_stack); |
0168a849 SS |
67 | |
68 | entry->alignment = maximum_field_alignment; | |
69 | entry->prev = field_align_stack; | |
70 | field_align_stack = entry; | |
71 | ||
72 | maximum_field_alignment = bit_alignment; | |
73 | } | |
74 | ||
75 | static void | |
9c808aad | 76 | pop_field_alignment (void) |
0168a849 SS |
77 | { |
78 | if (field_align_stack) | |
79 | { | |
80 | align_stack *entry = field_align_stack; | |
81 | ||
82 | maximum_field_alignment = entry->alignment; | |
83 | field_align_stack = entry->prev; | |
84 | free (entry); | |
85 | } | |
86 | else | |
87 | error ("too many #pragma options align=reset"); | |
88 | } | |
89 | ||
90 | /* Handlers for Darwin-specific pragmas. */ | |
91 | ||
92 | void | |
9c808aad | 93 | darwin_pragma_ignore (cpp_reader *pfile ATTRIBUTE_UNUSED) |
0168a849 SS |
94 | { |
95 | /* Do nothing. */ | |
96 | } | |
97 | ||
98 | /* #pragma options align={mac68k|power|reset} */ | |
99 | ||
100 | void | |
9c808aad | 101 | darwin_pragma_options (cpp_reader *pfile ATTRIBUTE_UNUSED) |
0168a849 | 102 | { |
7ae8cf75 | 103 | const char *arg; |
0168a849 SS |
104 | tree t, x; |
105 | ||
75ce3d48 | 106 | if (pragma_lex (&t) != CPP_NAME) |
0168a849 SS |
107 | BAD ("malformed '#pragma options', ignoring"); |
108 | arg = IDENTIFIER_POINTER (t); | |
109 | if (strcmp (arg, "align")) | |
110 | BAD ("malformed '#pragma options', ignoring"); | |
75ce3d48 | 111 | if (pragma_lex (&t) != CPP_EQ) |
0168a849 | 112 | BAD ("malformed '#pragma options', ignoring"); |
75ce3d48 | 113 | if (pragma_lex (&t) != CPP_NAME) |
0168a849 SS |
114 | BAD ("malformed '#pragma options', ignoring"); |
115 | ||
75ce3d48 | 116 | if (pragma_lex (&x) != CPP_EOF) |
aea8e035 | 117 | warning (OPT_Wpragmas, "junk at end of '#pragma options'"); |
0168a849 SS |
118 | |
119 | arg = IDENTIFIER_POINTER (t); | |
120 | if (!strcmp (arg, "mac68k")) | |
121 | push_field_alignment (16); | |
122 | else if (!strcmp (arg, "power")) | |
123 | push_field_alignment (0); | |
124 | else if (!strcmp (arg, "reset")) | |
125 | pop_field_alignment (); | |
126 | else | |
213af8c8 | 127 | BAD ("malformed '#pragma options align={mac68k|power|reset}', ignoring"); |
0168a849 SS |
128 | } |
129 | ||
130 | /* #pragma unused ([var {, var}*]) */ | |
131 | ||
132 | void | |
9c808aad | 133 | darwin_pragma_unused (cpp_reader *pfile ATTRIBUTE_UNUSED) |
0168a849 SS |
134 | { |
135 | tree decl, x; | |
136 | int tok; | |
137 | ||
75ce3d48 | 138 | if (pragma_lex (&x) != CPP_OPEN_PAREN) |
0168a849 SS |
139 | BAD ("missing '(' after '#pragma unused', ignoring"); |
140 | ||
141 | while (1) | |
142 | { | |
75ce3d48 | 143 | tok = pragma_lex (&decl); |
0168a849 SS |
144 | if (tok == CPP_NAME && decl) |
145 | { | |
10e6657a | 146 | tree local = lookup_name (decl); |
0168a849 SS |
147 | if (local && (TREE_CODE (local) == PARM_DECL |
148 | || TREE_CODE (local) == VAR_DECL)) | |
149 | TREE_USED (local) = 1; | |
75ce3d48 | 150 | tok = pragma_lex (&x); |
0168a849 SS |
151 | if (tok != CPP_COMMA) |
152 | break; | |
153 | } | |
154 | } | |
155 | ||
156 | if (tok != CPP_CLOSE_PAREN) | |
157 | BAD ("missing ')' after '#pragma unused', ignoring"); | |
158 | ||
75ce3d48 | 159 | if (pragma_lex (&x) != CPP_EOF) |
213af8c8 | 160 | BAD ("junk at end of '#pragma unused'"); |
0168a849 | 161 | } |
94d1613b | 162 | |
16d6f994 EC |
163 | /* Parse the ms_struct pragma. */ |
164 | void | |
165 | darwin_pragma_ms_struct (cpp_reader *pfile ATTRIBUTE_UNUSED) | |
166 | { | |
167 | const char *arg; | |
168 | tree t; | |
169 | ||
170 | if (pragma_lex (&t) != CPP_NAME) | |
171 | BAD ("malformed '#pragma ms_struct', ignoring"); | |
172 | arg = IDENTIFIER_POINTER (t); | |
173 | ||
174 | if (!strcmp (arg, "on")) | |
175 | darwin_ms_struct = true; | |
176 | else if (!strcmp (arg, "off") || !strcmp (arg, "reset")) | |
177 | darwin_ms_struct = false; | |
178 | else | |
213af8c8 | 179 | BAD ("malformed '#pragma ms_struct {on|off|reset}', ignoring"); |
16d6f994 EC |
180 | |
181 | if (pragma_lex (&t) != CPP_EOF) | |
213af8c8 | 182 | BAD ("junk at end of '#pragma ms_struct'"); |
16d6f994 EC |
183 | } |
184 | ||
94d1613b MS |
185 | static struct { |
186 | size_t len; | |
187 | const char *name; | |
188 | cpp_dir* dir; | |
189 | } *frameworks_in_use; | |
190 | static int num_frameworks = 0; | |
191 | static int max_frameworks = 0; | |
192 | ||
193 | ||
194 | /* Remember which frameworks have been seen, so that we can ensure | |
195 | that all uses of that framework come from the same framework. DIR | |
196 | is the place where the named framework NAME, which is of length | |
e3c287c9 MS |
197 | LEN, was found. We copy the directory name from NAME, as it will be |
198 | freed by others. */ | |
94d1613b MS |
199 | |
200 | static void | |
201 | add_framework (const char *name, size_t len, cpp_dir *dir) | |
202 | { | |
e3c287c9 | 203 | char *dir_name; |
94d1613b MS |
204 | int i; |
205 | for (i = 0; i < num_frameworks; ++i) | |
206 | { | |
207 | if (len == frameworks_in_use[i].len | |
208 | && strncmp (name, frameworks_in_use[i].name, len) == 0) | |
209 | { | |
210 | return; | |
211 | } | |
212 | } | |
213 | if (i >= max_frameworks) | |
214 | { | |
215 | max_frameworks = i*2; | |
e3c287c9 | 216 | max_frameworks += i == 0; |
94d1613b MS |
217 | frameworks_in_use = xrealloc (frameworks_in_use, |
218 | max_frameworks*sizeof(*frameworks_in_use)); | |
219 | } | |
5ed6ace5 | 220 | dir_name = XNEWVEC (char, len + 1); |
e3c287c9 MS |
221 | memcpy (dir_name, name, len); |
222 | dir_name[len] = '\0'; | |
223 | frameworks_in_use[num_frameworks].name = dir_name; | |
94d1613b MS |
224 | frameworks_in_use[num_frameworks].len = len; |
225 | frameworks_in_use[num_frameworks].dir = dir; | |
226 | ++num_frameworks; | |
227 | } | |
228 | ||
229 | /* Recall if we have seen the named framework NAME, before, and where | |
230 | we saw it. NAME is LEN bytes long. The return value is the place | |
231 | where it was seen before. */ | |
232 | ||
233 | static struct cpp_dir* | |
234 | find_framework (const char *name, size_t len) | |
235 | { | |
236 | int i; | |
237 | for (i = 0; i < num_frameworks; ++i) | |
238 | { | |
239 | if (len == frameworks_in_use[i].len | |
240 | && strncmp (name, frameworks_in_use[i].name, len) == 0) | |
241 | { | |
242 | return frameworks_in_use[i].dir; | |
243 | } | |
244 | } | |
245 | return 0; | |
246 | } | |
247 | ||
248 | /* There are two directories in a framework that contain header files, | |
249 | Headers and PrivateHeaders. We search Headers first as it is more | |
250 | common to upgrade a header from PrivateHeaders to Headers and when | |
251 | that is done, the old one might hang around and be out of data, | |
252 | causing grief. */ | |
253 | ||
254 | struct framework_header {const char * dirName; int dirNameLen; }; | |
255 | static struct framework_header framework_header_dirs[] = { | |
256 | { "Headers", 7 }, | |
257 | { "PrivateHeaders", 14 }, | |
258 | { NULL, 0 } | |
259 | }; | |
260 | ||
261 | /* Returns a pointer to a malloced string that contains the real pathname | |
262 | to the file, given the base name and the name. */ | |
263 | ||
264 | static char * | |
265 | framework_construct_pathname (const char *fname, cpp_dir *dir) | |
266 | { | |
267 | char *buf; | |
268 | size_t fname_len, frname_len; | |
269 | cpp_dir *fast_dir; | |
270 | char *frname; | |
271 | struct stat st; | |
272 | int i; | |
273 | ||
274 | /* Framework names must have a / in them. */ | |
275 | buf = strchr (fname, '/'); | |
276 | if (buf) | |
277 | fname_len = buf - fname; | |
278 | else | |
279 | return 0; | |
280 | ||
281 | fast_dir = find_framework (fname, fname_len); | |
282 | ||
283 | /* Framework includes must all come from one framework. */ | |
284 | if (fast_dir && dir != fast_dir) | |
285 | return 0; | |
286 | ||
5ed6ace5 | 287 | frname = XNEWVEC (char, strlen (fname) + dir->len + 2 |
94d1613b MS |
288 | + strlen(".framework/") + strlen("PrivateHeaders")); |
289 | strncpy (&frname[0], dir->name, dir->len); | |
290 | frname_len = dir->len; | |
291 | if (frname_len && frname[frname_len-1] != '/') | |
292 | frname[frname_len++] = '/'; | |
293 | strncpy (&frname[frname_len], fname, fname_len); | |
294 | frname_len += fname_len; | |
295 | strncpy (&frname[frname_len], ".framework/", strlen (".framework/")); | |
296 | frname_len += strlen (".framework/"); | |
297 | ||
a68bdb0b MS |
298 | if (fast_dir == 0) |
299 | { | |
300 | frname[frname_len-1] = 0; | |
301 | if (stat (frname, &st) == 0) | |
302 | { | |
303 | /* As soon as we find the first instance of the framework, | |
304 | we stop and never use any later instance of that | |
305 | framework. */ | |
306 | add_framework (fname, fname_len, dir); | |
307 | } | |
308 | else | |
309 | { | |
310 | /* If we can't find the parent directory, no point looking | |
311 | further. */ | |
312 | free (frname); | |
313 | return 0; | |
314 | } | |
315 | frname[frname_len-1] = '/'; | |
316 | } | |
317 | ||
94d1613b MS |
318 | /* Append framework_header_dirs and header file name */ |
319 | for (i = 0; framework_header_dirs[i].dirName; i++) | |
320 | { | |
16d6f994 | 321 | strncpy (&frname[frname_len], |
94d1613b MS |
322 | framework_header_dirs[i].dirName, |
323 | framework_header_dirs[i].dirNameLen); | |
324 | strcpy (&frname[frname_len + framework_header_dirs[i].dirNameLen], | |
325 | &fname[fname_len]); | |
326 | ||
327 | if (stat (frname, &st) == 0) | |
a68bdb0b | 328 | return frname; |
94d1613b MS |
329 | } |
330 | ||
331 | free (frname); | |
332 | return 0; | |
333 | } | |
334 | ||
335 | /* Search for FNAME in sub-frameworks. pname is the context that we | |
336 | wish to search in. Return the path the file was found at, | |
337 | otherwise return 0. */ | |
338 | ||
339 | static const char* | |
340 | find_subframework_file (const char *fname, const char *pname) | |
341 | { | |
342 | char *sfrname; | |
343 | const char *dot_framework = ".framework/"; | |
16d6f994 EC |
344 | char *bufptr; |
345 | int sfrname_len, i, fname_len; | |
94d1613b MS |
346 | struct cpp_dir *fast_dir; |
347 | static struct cpp_dir subframe_dir; | |
348 | struct stat st; | |
349 | ||
350 | bufptr = strchr (fname, '/'); | |
351 | ||
352 | /* Subframework files must have / in the name. */ | |
353 | if (bufptr == 0) | |
354 | return 0; | |
16d6f994 | 355 | |
94d1613b MS |
356 | fname_len = bufptr - fname; |
357 | fast_dir = find_framework (fname, fname_len); | |
358 | ||
359 | /* Sub framework header filename includes parent framework name and | |
360 | header name in the "CarbonCore/OSUtils.h" form. If it does not | |
361 | include slash it is not a sub framework include. */ | |
362 | bufptr = strstr (pname, dot_framework); | |
363 | ||
364 | /* If the parent header is not of any framework, then this header | |
1e5f1716 | 365 | cannot be part of any subframework. */ |
94d1613b MS |
366 | if (!bufptr) |
367 | return 0; | |
368 | ||
369 | /* Now translate. For example, +- bufptr | |
16d6f994 | 370 | fname = CarbonCore/OSUtils.h | |
94d1613b MS |
371 | pname = /System/Library/Frameworks/Foundation.framework/Headers/Foundation.h |
372 | into | |
373 | sfrname = /System/Library/Frameworks/Foundation.framework/Frameworks/CarbonCore.framework/Headers/OSUtils.h */ | |
374 | ||
5ed6ace5 | 375 | sfrname = XNEWVEC (char, strlen (pname) + strlen (fname) + 2 + |
94d1613b MS |
376 | strlen ("Frameworks/") + strlen (".framework/") |
377 | + strlen ("PrivateHeaders")); | |
16d6f994 | 378 | |
94d1613b MS |
379 | bufptr += strlen (dot_framework); |
380 | ||
16d6f994 | 381 | sfrname_len = bufptr - pname; |
94d1613b MS |
382 | |
383 | strncpy (&sfrname[0], pname, sfrname_len); | |
384 | ||
385 | strncpy (&sfrname[sfrname_len], "Frameworks/", strlen ("Frameworks/")); | |
386 | sfrname_len += strlen("Frameworks/"); | |
387 | ||
388 | strncpy (&sfrname[sfrname_len], fname, fname_len); | |
389 | sfrname_len += fname_len; | |
390 | ||
391 | strncpy (&sfrname[sfrname_len], ".framework/", strlen (".framework/")); | |
392 | sfrname_len += strlen (".framework/"); | |
393 | ||
394 | /* Append framework_header_dirs and header file name */ | |
395 | for (i = 0; framework_header_dirs[i].dirName; i++) | |
396 | { | |
16d6f994 | 397 | strncpy (&sfrname[sfrname_len], |
94d1613b MS |
398 | framework_header_dirs[i].dirName, |
399 | framework_header_dirs[i].dirNameLen); | |
400 | strcpy (&sfrname[sfrname_len + framework_header_dirs[i].dirNameLen], | |
401 | &fname[fname_len]); | |
16d6f994 | 402 | |
94d1613b MS |
403 | if (stat (sfrname, &st) == 0) |
404 | { | |
405 | if (fast_dir != &subframe_dir) | |
406 | { | |
407 | if (fast_dir) | |
d4ee4d25 | 408 | warning (0, "subframework include %s conflicts with framework include", |
94d1613b MS |
409 | fname); |
410 | else | |
411 | add_framework (fname, fname_len, &subframe_dir); | |
412 | } | |
413 | ||
414 | return sfrname; | |
415 | } | |
416 | } | |
417 | free (sfrname); | |
418 | ||
419 | return 0; | |
420 | } | |
421 | ||
422 | /* Add PATH to the system includes. PATH must be malloc-ed and | |
423 | NUL-terminated. System framework paths are C++ aware. */ | |
424 | ||
425 | static void | |
426 | add_system_framework_path (char *path) | |
427 | { | |
428 | int cxx_aware = 1; | |
429 | cpp_dir *p; | |
430 | ||
5ed6ace5 | 431 | p = XNEW (cpp_dir); |
94d1613b MS |
432 | p->next = NULL; |
433 | p->name = path; | |
434 | p->sysp = 1 + !cxx_aware; | |
435 | p->construct = framework_construct_pathname; | |
436 | using_frameworks = 1; | |
437 | ||
438 | add_cpp_dir_path (p, SYSTEM); | |
439 | } | |
440 | ||
441 | /* Add PATH to the bracket includes. PATH must be malloc-ed and | |
442 | NUL-terminated. */ | |
443 | ||
444 | void | |
445 | add_framework_path (char *path) | |
446 | { | |
447 | cpp_dir *p; | |
448 | ||
5ed6ace5 | 449 | p = XNEW (cpp_dir); |
94d1613b MS |
450 | p->next = NULL; |
451 | p->name = path; | |
452 | p->sysp = 0; | |
453 | p->construct = framework_construct_pathname; | |
454 | using_frameworks = 1; | |
455 | ||
456 | add_cpp_dir_path (p, BRACKET); | |
457 | } | |
458 | ||
16d6f994 | 459 | static const char *framework_defaults [] = |
94d1613b MS |
460 | { |
461 | "/System/Library/Frameworks", | |
462 | "/Library/Frameworks", | |
94d1613b MS |
463 | }; |
464 | ||
3dd53121 AP |
465 | /* Register the GNU objective-C runtime include path if STDINC. */ |
466 | ||
467 | void | |
468 | darwin_register_objc_includes (const char *sysroot, const char *iprefix, | |
469 | int stdinc) | |
470 | { | |
471 | const char *fname; | |
472 | size_t len; | |
473 | /* We do not do anything if we do not want the standard includes. */ | |
474 | if (!stdinc) | |
475 | return; | |
16d6f994 | 476 | |
3dd53121 | 477 | fname = GCC_INCLUDE_DIR "-gnu-runtime"; |
16d6f994 | 478 | |
3dd53121 AP |
479 | /* Register the GNU OBJC runtime include path if we are compiling OBJC |
480 | with GNU-runtime. */ | |
481 | ||
482 | if (c_dialect_objc () && !flag_next_runtime) | |
483 | { | |
484 | char *str; | |
485 | /* See if our directory starts with the standard prefix. | |
112cdef5 | 486 | "Translate" them, i.e. replace /usr/local/lib/gcc... with |
3dd53121 AP |
487 | IPREFIX and search them first. */ |
488 | if (iprefix && (len = cpp_GCC_INCLUDE_DIR_len) != 0 && !sysroot | |
489 | && !strncmp (fname, cpp_GCC_INCLUDE_DIR, len)) | |
490 | { | |
491 | str = concat (iprefix, fname + len, NULL); | |
492 | /* FIXME: wrap the headers for C++awareness. */ | |
493 | add_path (str, SYSTEM, /*c++aware=*/false, false); | |
494 | } | |
16d6f994 | 495 | |
3dd53121 AP |
496 | /* Should this directory start with the sysroot? */ |
497 | if (sysroot) | |
498 | str = concat (sysroot, fname, NULL); | |
499 | else | |
500 | str = update_path (fname, ""); | |
16d6f994 | 501 | |
3dd53121 AP |
502 | add_path (str, SYSTEM, /*c++aware=*/false, false); |
503 | } | |
504 | } | |
505 | ||
94d1613b MS |
506 | |
507 | /* Register all the system framework paths if STDINC is true and setup | |
508 | the missing_header callback for subframework searching if any | |
509 | frameworks had been registered. */ | |
510 | ||
511 | void | |
479ec1d1 | 512 | darwin_register_frameworks (const char *sysroot, |
3dd53121 | 513 | const char *iprefix ATTRIBUTE_UNUSED, int stdinc) |
94d1613b MS |
514 | { |
515 | if (stdinc) | |
516 | { | |
517 | size_t i; | |
518 | ||
519 | /* Setup default search path for frameworks. */ | |
520 | for (i=0; i<sizeof (framework_defaults)/sizeof(const char *); ++i) | |
521 | { | |
479ec1d1 DP |
522 | char *str; |
523 | if (sysroot) | |
524 | str = concat (sysroot, xstrdup (framework_defaults [i]), NULL); | |
525 | else | |
526 | str = xstrdup (framework_defaults[i]); | |
94d1613b | 527 | /* System Framework headers are cxx aware. */ |
479ec1d1 | 528 | add_system_framework_path (str); |
94d1613b MS |
529 | } |
530 | } | |
531 | ||
532 | if (using_frameworks) | |
533 | cpp_get_callbacks (parse_in)->missing_header = find_subframework_header; | |
534 | } | |
535 | ||
536 | /* Search for HEADER in context dependent way. The return value is | |
537 | the malloced name of a header to try and open, if any, or NULL | |
538 | otherwise. This is called after normal header lookup processing | |
539 | fails to find a header. We search each file in the include stack, | |
540 | using FUNC, starting from the most deeply nested include and | |
541 | finishing with the main input file. We stop searching when FUNC | |
0e40b5f2 | 542 | returns nonzero. */ |
94d1613b MS |
543 | |
544 | static const char* | |
e3c287c9 | 545 | find_subframework_header (cpp_reader *pfile, const char *header, cpp_dir **dirp) |
94d1613b MS |
546 | { |
547 | const char *fname = header; | |
548 | struct cpp_buffer *b; | |
549 | const char *n; | |
550 | ||
551 | for (b = cpp_get_buffer (pfile); | |
552 | b && cpp_get_file (b) && cpp_get_path (cpp_get_file (b)); | |
553 | b = cpp_get_prev (b)) | |
554 | { | |
555 | n = find_subframework_file (fname, cpp_get_path (cpp_get_file (b))); | |
556 | if (n) | |
e3c287c9 MS |
557 | { |
558 | /* Logically, the place where we found the subframework is | |
559 | the place where we found the Framework that contains the | |
560 | subframework. This is useful for tracking wether or not | |
561 | we are in a system header. */ | |
562 | *dirp = cpp_get_dir (cpp_get_file (b)); | |
563 | return n; | |
564 | } | |
94d1613b MS |
565 | } |
566 | ||
567 | return 0; | |
568 | } | |
ed5b9f96 GK |
569 | |
570 | /* Return the value of darwin_macosx_version_min suitable for the | |
571 | __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ macro, | |
16d6f994 | 572 | so '10.4.2' becomes 1042. |
ed5b9f96 GK |
573 | Print a warning if the version number is not known. */ |
574 | static const char * | |
575 | version_as_macro (void) | |
576 | { | |
577 | static char result[] = "1000"; | |
16d6f994 | 578 | |
ed5b9f96 GK |
579 | if (strncmp (darwin_macosx_version_min, "10.", 3) != 0) |
580 | goto fail; | |
581 | if (! ISDIGIT (darwin_macosx_version_min[3])) | |
582 | goto fail; | |
583 | result[2] = darwin_macosx_version_min[3]; | |
584 | if (darwin_macosx_version_min[4] != '\0') | |
585 | { | |
586 | if (darwin_macosx_version_min[4] != '.') | |
587 | goto fail; | |
588 | if (! ISDIGIT (darwin_macosx_version_min[5])) | |
589 | goto fail; | |
590 | if (darwin_macosx_version_min[6] != '\0') | |
591 | goto fail; | |
592 | result[3] = darwin_macosx_version_min[5]; | |
593 | } | |
594 | else | |
595 | result[3] = '0'; | |
16d6f994 | 596 | |
ed5b9f96 | 597 | return result; |
16d6f994 | 598 | |
ed5b9f96 GK |
599 | fail: |
600 | error ("Unknown value %qs of -mmacosx-version-min", | |
601 | darwin_macosx_version_min); | |
602 | return "1000"; | |
603 | } | |
604 | ||
605 | /* Define additional CPP flags for Darwin. */ | |
606 | ||
607 | #define builtin_define(TXT) cpp_define (pfile, TXT) | |
608 | ||
609 | void | |
610 | darwin_cpp_builtins (cpp_reader *pfile) | |
611 | { | |
612 | builtin_define ("__MACH__"); | |
613 | builtin_define ("__APPLE__"); | |
614 | ||
615 | /* __APPLE_CC__ is defined as some old Apple include files expect it | |
616 | to be defined and won't work if it isn't. */ | |
617 | builtin_define_with_value ("__APPLE_CC__", "1", false); | |
618 | ||
619 | if (darwin_macosx_version_min) | |
620 | builtin_define_with_value ("__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__", | |
621 | version_as_macro(), false); | |
622 | } |