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0168a849 | 1 | /* Darwin support needed only by C/C++ frontends. |
2f83c7d6 | 2 | Copyright (C) 2001, 2003, 2004, 2005, 2007 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 | 8 | it under the terms of the GNU General Public License as published by |
2f83c7d6 | 9 | the Free Software Foundation; either version 3, or (at your option) |
0168a849 SS |
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 | |
2f83c7d6 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
0168a849 SS |
20 | |
21 | #include "config.h" | |
22 | #include "system.h" | |
4977bab6 ZW |
23 | #include "coretypes.h" |
24 | #include "tm.h" | |
0168a849 SS |
25 | #include "cpplib.h" |
26 | #include "tree.h" | |
27 | #include "c-pragma.h" | |
0168a849 | 28 | #include "c-tree.h" |
e8a25ca8 | 29 | #include "incpath.h" |
10e6657a | 30 | #include "c-common.h" |
0168a849 | 31 | #include "toplev.h" |
43b3a5b1 | 32 | #include "flags.h" |
0168a849 | 33 | #include "tm_p.h" |
3dd53121 AP |
34 | #include "cppdefault.h" |
35 | #include "prefix.h" | |
1f1d5130 MS |
36 | #include "target.h" |
37 | #include "target-def.h" | |
0168a849 SS |
38 | |
39 | /* Pragmas. */ | |
40 | ||
76ad5c10 MS |
41 | #define BAD(gmsgid) do { warning (OPT_Wpragmas, gmsgid); return; } while (0) |
42 | #define BAD2(msgid, arg) do { warning (OPT_Wpragmas, msgid, arg); return; } while (0) | |
0168a849 | 43 | |
94d1613b MS |
44 | static bool using_frameworks = false; |
45 | ||
e3c287c9 MS |
46 | static const char *find_subframework_header (cpp_reader *pfile, const char *header, |
47 | cpp_dir **dirp); | |
0168a849 SS |
48 | |
49 | typedef struct align_stack | |
50 | { | |
51 | int alignment; | |
52 | struct align_stack * prev; | |
53 | } align_stack; | |
54 | ||
55 | static struct align_stack * field_align_stack = NULL; | |
56 | ||
1f1d5130 MS |
57 | /* Maintain a small stack of alignments. This is similar to pragma |
58 | pack's stack, but simpler. */ | |
59 | ||
0168a849 | 60 | static void |
9c808aad | 61 | push_field_alignment (int bit_alignment) |
0168a849 | 62 | { |
5ed6ace5 | 63 | align_stack *entry = XNEW (align_stack); |
0168a849 SS |
64 | |
65 | entry->alignment = maximum_field_alignment; | |
66 | entry->prev = field_align_stack; | |
67 | field_align_stack = entry; | |
68 | ||
69 | maximum_field_alignment = bit_alignment; | |
70 | } | |
71 | ||
72 | static void | |
9c808aad | 73 | pop_field_alignment (void) |
0168a849 SS |
74 | { |
75 | if (field_align_stack) | |
76 | { | |
77 | align_stack *entry = field_align_stack; | |
78 | ||
79 | maximum_field_alignment = entry->alignment; | |
80 | field_align_stack = entry->prev; | |
81 | free (entry); | |
82 | } | |
83 | else | |
84 | error ("too many #pragma options align=reset"); | |
85 | } | |
86 | ||
87 | /* Handlers for Darwin-specific pragmas. */ | |
88 | ||
89 | void | |
9c808aad | 90 | darwin_pragma_ignore (cpp_reader *pfile ATTRIBUTE_UNUSED) |
0168a849 SS |
91 | { |
92 | /* Do nothing. */ | |
93 | } | |
94 | ||
95 | /* #pragma options align={mac68k|power|reset} */ | |
96 | ||
97 | void | |
9c808aad | 98 | darwin_pragma_options (cpp_reader *pfile ATTRIBUTE_UNUSED) |
0168a849 | 99 | { |
7ae8cf75 | 100 | const char *arg; |
0168a849 SS |
101 | tree t, x; |
102 | ||
75ce3d48 | 103 | if (pragma_lex (&t) != CPP_NAME) |
0168a849 SS |
104 | BAD ("malformed '#pragma options', ignoring"); |
105 | arg = IDENTIFIER_POINTER (t); | |
106 | if (strcmp (arg, "align")) | |
107 | BAD ("malformed '#pragma options', ignoring"); | |
75ce3d48 | 108 | if (pragma_lex (&t) != CPP_EQ) |
0168a849 | 109 | BAD ("malformed '#pragma options', ignoring"); |
75ce3d48 | 110 | if (pragma_lex (&t) != CPP_NAME) |
0168a849 SS |
111 | BAD ("malformed '#pragma options', ignoring"); |
112 | ||
75ce3d48 | 113 | if (pragma_lex (&x) != CPP_EOF) |
aea8e035 | 114 | warning (OPT_Wpragmas, "junk at end of '#pragma options'"); |
0168a849 SS |
115 | |
116 | arg = IDENTIFIER_POINTER (t); | |
117 | if (!strcmp (arg, "mac68k")) | |
118 | push_field_alignment (16); | |
119 | else if (!strcmp (arg, "power")) | |
120 | push_field_alignment (0); | |
121 | else if (!strcmp (arg, "reset")) | |
122 | pop_field_alignment (); | |
123 | else | |
213af8c8 | 124 | BAD ("malformed '#pragma options align={mac68k|power|reset}', ignoring"); |
0168a849 SS |
125 | } |
126 | ||
127 | /* #pragma unused ([var {, var}*]) */ | |
128 | ||
129 | void | |
9c808aad | 130 | darwin_pragma_unused (cpp_reader *pfile ATTRIBUTE_UNUSED) |
0168a849 SS |
131 | { |
132 | tree decl, x; | |
133 | int tok; | |
134 | ||
75ce3d48 | 135 | if (pragma_lex (&x) != CPP_OPEN_PAREN) |
0168a849 SS |
136 | BAD ("missing '(' after '#pragma unused', ignoring"); |
137 | ||
138 | while (1) | |
139 | { | |
75ce3d48 | 140 | tok = pragma_lex (&decl); |
0168a849 SS |
141 | if (tok == CPP_NAME && decl) |
142 | { | |
10e6657a | 143 | tree local = lookup_name (decl); |
0168a849 SS |
144 | if (local && (TREE_CODE (local) == PARM_DECL |
145 | || TREE_CODE (local) == VAR_DECL)) | |
146 | TREE_USED (local) = 1; | |
75ce3d48 | 147 | tok = pragma_lex (&x); |
0168a849 SS |
148 | if (tok != CPP_COMMA) |
149 | break; | |
150 | } | |
151 | } | |
152 | ||
153 | if (tok != CPP_CLOSE_PAREN) | |
154 | BAD ("missing ')' after '#pragma unused', ignoring"); | |
155 | ||
75ce3d48 | 156 | if (pragma_lex (&x) != CPP_EOF) |
213af8c8 | 157 | BAD ("junk at end of '#pragma unused'"); |
0168a849 | 158 | } |
94d1613b | 159 | |
16d6f994 EC |
160 | /* Parse the ms_struct pragma. */ |
161 | void | |
162 | darwin_pragma_ms_struct (cpp_reader *pfile ATTRIBUTE_UNUSED) | |
163 | { | |
164 | const char *arg; | |
165 | tree t; | |
166 | ||
167 | if (pragma_lex (&t) != CPP_NAME) | |
168 | BAD ("malformed '#pragma ms_struct', ignoring"); | |
169 | arg = IDENTIFIER_POINTER (t); | |
170 | ||
171 | if (!strcmp (arg, "on")) | |
172 | darwin_ms_struct = true; | |
173 | else if (!strcmp (arg, "off") || !strcmp (arg, "reset")) | |
174 | darwin_ms_struct = false; | |
175 | else | |
213af8c8 | 176 | BAD ("malformed '#pragma ms_struct {on|off|reset}', ignoring"); |
16d6f994 EC |
177 | |
178 | if (pragma_lex (&t) != CPP_EOF) | |
213af8c8 | 179 | BAD ("junk at end of '#pragma ms_struct'"); |
16d6f994 EC |
180 | } |
181 | ||
5ead67f6 | 182 | static struct frameworks_in_use { |
94d1613b MS |
183 | size_t len; |
184 | const char *name; | |
185 | cpp_dir* dir; | |
186 | } *frameworks_in_use; | |
187 | static int num_frameworks = 0; | |
188 | static int max_frameworks = 0; | |
189 | ||
190 | ||
191 | /* Remember which frameworks have been seen, so that we can ensure | |
192 | that all uses of that framework come from the same framework. DIR | |
193 | is the place where the named framework NAME, which is of length | |
e3c287c9 MS |
194 | LEN, was found. We copy the directory name from NAME, as it will be |
195 | freed by others. */ | |
94d1613b MS |
196 | |
197 | static void | |
198 | add_framework (const char *name, size_t len, cpp_dir *dir) | |
199 | { | |
e3c287c9 | 200 | char *dir_name; |
94d1613b MS |
201 | int i; |
202 | for (i = 0; i < num_frameworks; ++i) | |
203 | { | |
204 | if (len == frameworks_in_use[i].len | |
205 | && strncmp (name, frameworks_in_use[i].name, len) == 0) | |
206 | { | |
207 | return; | |
208 | } | |
209 | } | |
210 | if (i >= max_frameworks) | |
211 | { | |
212 | max_frameworks = i*2; | |
e3c287c9 | 213 | max_frameworks += i == 0; |
5ead67f6 KG |
214 | frameworks_in_use = XRESIZEVEC (struct frameworks_in_use, |
215 | frameworks_in_use, max_frameworks); | |
94d1613b | 216 | } |
5ed6ace5 | 217 | dir_name = XNEWVEC (char, len + 1); |
e3c287c9 MS |
218 | memcpy (dir_name, name, len); |
219 | dir_name[len] = '\0'; | |
220 | frameworks_in_use[num_frameworks].name = dir_name; | |
94d1613b MS |
221 | frameworks_in_use[num_frameworks].len = len; |
222 | frameworks_in_use[num_frameworks].dir = dir; | |
223 | ++num_frameworks; | |
224 | } | |
225 | ||
226 | /* Recall if we have seen the named framework NAME, before, and where | |
227 | we saw it. NAME is LEN bytes long. The return value is the place | |
228 | where it was seen before. */ | |
229 | ||
230 | static struct cpp_dir* | |
231 | find_framework (const char *name, size_t len) | |
232 | { | |
233 | int i; | |
234 | for (i = 0; i < num_frameworks; ++i) | |
235 | { | |
236 | if (len == frameworks_in_use[i].len | |
237 | && strncmp (name, frameworks_in_use[i].name, len) == 0) | |
238 | { | |
239 | return frameworks_in_use[i].dir; | |
240 | } | |
241 | } | |
242 | return 0; | |
243 | } | |
244 | ||
245 | /* There are two directories in a framework that contain header files, | |
246 | Headers and PrivateHeaders. We search Headers first as it is more | |
247 | common to upgrade a header from PrivateHeaders to Headers and when | |
248 | that is done, the old one might hang around and be out of data, | |
249 | causing grief. */ | |
250 | ||
251 | struct framework_header {const char * dirName; int dirNameLen; }; | |
252 | static struct framework_header framework_header_dirs[] = { | |
253 | { "Headers", 7 }, | |
254 | { "PrivateHeaders", 14 }, | |
255 | { NULL, 0 } | |
256 | }; | |
257 | ||
258 | /* Returns a pointer to a malloced string that contains the real pathname | |
259 | to the file, given the base name and the name. */ | |
260 | ||
261 | static char * | |
262 | framework_construct_pathname (const char *fname, cpp_dir *dir) | |
263 | { | |
264 | char *buf; | |
265 | size_t fname_len, frname_len; | |
266 | cpp_dir *fast_dir; | |
267 | char *frname; | |
268 | struct stat st; | |
269 | int i; | |
270 | ||
271 | /* Framework names must have a / in them. */ | |
272 | buf = strchr (fname, '/'); | |
273 | if (buf) | |
274 | fname_len = buf - fname; | |
275 | else | |
276 | return 0; | |
277 | ||
278 | fast_dir = find_framework (fname, fname_len); | |
279 | ||
280 | /* Framework includes must all come from one framework. */ | |
281 | if (fast_dir && dir != fast_dir) | |
282 | return 0; | |
283 | ||
5ed6ace5 | 284 | frname = XNEWVEC (char, strlen (fname) + dir->len + 2 |
94d1613b MS |
285 | + strlen(".framework/") + strlen("PrivateHeaders")); |
286 | strncpy (&frname[0], dir->name, dir->len); | |
287 | frname_len = dir->len; | |
288 | if (frname_len && frname[frname_len-1] != '/') | |
289 | frname[frname_len++] = '/'; | |
290 | strncpy (&frname[frname_len], fname, fname_len); | |
291 | frname_len += fname_len; | |
292 | strncpy (&frname[frname_len], ".framework/", strlen (".framework/")); | |
293 | frname_len += strlen (".framework/"); | |
294 | ||
a68bdb0b MS |
295 | if (fast_dir == 0) |
296 | { | |
297 | frname[frname_len-1] = 0; | |
298 | if (stat (frname, &st) == 0) | |
299 | { | |
300 | /* As soon as we find the first instance of the framework, | |
301 | we stop and never use any later instance of that | |
302 | framework. */ | |
303 | add_framework (fname, fname_len, dir); | |
304 | } | |
305 | else | |
306 | { | |
307 | /* If we can't find the parent directory, no point looking | |
308 | further. */ | |
309 | free (frname); | |
310 | return 0; | |
311 | } | |
312 | frname[frname_len-1] = '/'; | |
313 | } | |
314 | ||
94d1613b MS |
315 | /* Append framework_header_dirs and header file name */ |
316 | for (i = 0; framework_header_dirs[i].dirName; i++) | |
317 | { | |
16d6f994 | 318 | strncpy (&frname[frname_len], |
94d1613b MS |
319 | framework_header_dirs[i].dirName, |
320 | framework_header_dirs[i].dirNameLen); | |
321 | strcpy (&frname[frname_len + framework_header_dirs[i].dirNameLen], | |
322 | &fname[fname_len]); | |
323 | ||
324 | if (stat (frname, &st) == 0) | |
a68bdb0b | 325 | return frname; |
94d1613b MS |
326 | } |
327 | ||
328 | free (frname); | |
329 | return 0; | |
330 | } | |
331 | ||
332 | /* Search for FNAME in sub-frameworks. pname is the context that we | |
333 | wish to search in. Return the path the file was found at, | |
334 | otherwise return 0. */ | |
335 | ||
336 | static const char* | |
337 | find_subframework_file (const char *fname, const char *pname) | |
338 | { | |
339 | char *sfrname; | |
340 | const char *dot_framework = ".framework/"; | |
16d6f994 EC |
341 | char *bufptr; |
342 | int sfrname_len, i, fname_len; | |
94d1613b MS |
343 | struct cpp_dir *fast_dir; |
344 | static struct cpp_dir subframe_dir; | |
345 | struct stat st; | |
346 | ||
347 | bufptr = strchr (fname, '/'); | |
348 | ||
349 | /* Subframework files must have / in the name. */ | |
350 | if (bufptr == 0) | |
351 | return 0; | |
16d6f994 | 352 | |
94d1613b MS |
353 | fname_len = bufptr - fname; |
354 | fast_dir = find_framework (fname, fname_len); | |
355 | ||
356 | /* Sub framework header filename includes parent framework name and | |
357 | header name in the "CarbonCore/OSUtils.h" form. If it does not | |
358 | include slash it is not a sub framework include. */ | |
359 | bufptr = strstr (pname, dot_framework); | |
360 | ||
361 | /* If the parent header is not of any framework, then this header | |
1e5f1716 | 362 | cannot be part of any subframework. */ |
94d1613b MS |
363 | if (!bufptr) |
364 | return 0; | |
365 | ||
366 | /* Now translate. For example, +- bufptr | |
16d6f994 | 367 | fname = CarbonCore/OSUtils.h | |
94d1613b MS |
368 | pname = /System/Library/Frameworks/Foundation.framework/Headers/Foundation.h |
369 | into | |
370 | sfrname = /System/Library/Frameworks/Foundation.framework/Frameworks/CarbonCore.framework/Headers/OSUtils.h */ | |
371 | ||
5ed6ace5 | 372 | sfrname = XNEWVEC (char, strlen (pname) + strlen (fname) + 2 + |
94d1613b MS |
373 | strlen ("Frameworks/") + strlen (".framework/") |
374 | + strlen ("PrivateHeaders")); | |
16d6f994 | 375 | |
94d1613b MS |
376 | bufptr += strlen (dot_framework); |
377 | ||
16d6f994 | 378 | sfrname_len = bufptr - pname; |
94d1613b MS |
379 | |
380 | strncpy (&sfrname[0], pname, sfrname_len); | |
381 | ||
382 | strncpy (&sfrname[sfrname_len], "Frameworks/", strlen ("Frameworks/")); | |
383 | sfrname_len += strlen("Frameworks/"); | |
384 | ||
385 | strncpy (&sfrname[sfrname_len], fname, fname_len); | |
386 | sfrname_len += fname_len; | |
387 | ||
388 | strncpy (&sfrname[sfrname_len], ".framework/", strlen (".framework/")); | |
389 | sfrname_len += strlen (".framework/"); | |
390 | ||
391 | /* Append framework_header_dirs and header file name */ | |
392 | for (i = 0; framework_header_dirs[i].dirName; i++) | |
393 | { | |
16d6f994 | 394 | strncpy (&sfrname[sfrname_len], |
94d1613b MS |
395 | framework_header_dirs[i].dirName, |
396 | framework_header_dirs[i].dirNameLen); | |
397 | strcpy (&sfrname[sfrname_len + framework_header_dirs[i].dirNameLen], | |
398 | &fname[fname_len]); | |
16d6f994 | 399 | |
94d1613b MS |
400 | if (stat (sfrname, &st) == 0) |
401 | { | |
402 | if (fast_dir != &subframe_dir) | |
403 | { | |
404 | if (fast_dir) | |
d4ee4d25 | 405 | warning (0, "subframework include %s conflicts with framework include", |
94d1613b MS |
406 | fname); |
407 | else | |
408 | add_framework (fname, fname_len, &subframe_dir); | |
409 | } | |
410 | ||
411 | return sfrname; | |
412 | } | |
413 | } | |
414 | free (sfrname); | |
415 | ||
416 | return 0; | |
417 | } | |
418 | ||
419 | /* Add PATH to the system includes. PATH must be malloc-ed and | |
420 | NUL-terminated. System framework paths are C++ aware. */ | |
421 | ||
422 | static void | |
423 | add_system_framework_path (char *path) | |
424 | { | |
425 | int cxx_aware = 1; | |
426 | cpp_dir *p; | |
427 | ||
5ed6ace5 | 428 | p = XNEW (cpp_dir); |
94d1613b MS |
429 | p->next = NULL; |
430 | p->name = path; | |
431 | p->sysp = 1 + !cxx_aware; | |
432 | p->construct = framework_construct_pathname; | |
433 | using_frameworks = 1; | |
434 | ||
435 | add_cpp_dir_path (p, SYSTEM); | |
436 | } | |
437 | ||
438 | /* Add PATH to the bracket includes. PATH must be malloc-ed and | |
439 | NUL-terminated. */ | |
440 | ||
441 | void | |
442 | add_framework_path (char *path) | |
443 | { | |
444 | cpp_dir *p; | |
445 | ||
5ed6ace5 | 446 | p = XNEW (cpp_dir); |
94d1613b MS |
447 | p->next = NULL; |
448 | p->name = path; | |
449 | p->sysp = 0; | |
450 | p->construct = framework_construct_pathname; | |
451 | using_frameworks = 1; | |
452 | ||
453 | add_cpp_dir_path (p, BRACKET); | |
454 | } | |
455 | ||
16d6f994 | 456 | static const char *framework_defaults [] = |
94d1613b MS |
457 | { |
458 | "/System/Library/Frameworks", | |
459 | "/Library/Frameworks", | |
94d1613b MS |
460 | }; |
461 | ||
3dd53121 AP |
462 | /* Register the GNU objective-C runtime include path if STDINC. */ |
463 | ||
464 | void | |
465 | darwin_register_objc_includes (const char *sysroot, const char *iprefix, | |
466 | int stdinc) | |
467 | { | |
468 | const char *fname; | |
469 | size_t len; | |
470 | /* We do not do anything if we do not want the standard includes. */ | |
471 | if (!stdinc) | |
472 | return; | |
16d6f994 | 473 | |
3dd53121 | 474 | fname = GCC_INCLUDE_DIR "-gnu-runtime"; |
16d6f994 | 475 | |
3dd53121 AP |
476 | /* Register the GNU OBJC runtime include path if we are compiling OBJC |
477 | with GNU-runtime. */ | |
478 | ||
479 | if (c_dialect_objc () && !flag_next_runtime) | |
480 | { | |
481 | char *str; | |
482 | /* See if our directory starts with the standard prefix. | |
112cdef5 | 483 | "Translate" them, i.e. replace /usr/local/lib/gcc... with |
3dd53121 AP |
484 | IPREFIX and search them first. */ |
485 | if (iprefix && (len = cpp_GCC_INCLUDE_DIR_len) != 0 && !sysroot | |
486 | && !strncmp (fname, cpp_GCC_INCLUDE_DIR, len)) | |
487 | { | |
488 | str = concat (iprefix, fname + len, NULL); | |
489 | /* FIXME: wrap the headers for C++awareness. */ | |
490 | add_path (str, SYSTEM, /*c++aware=*/false, false); | |
491 | } | |
16d6f994 | 492 | |
3dd53121 AP |
493 | /* Should this directory start with the sysroot? */ |
494 | if (sysroot) | |
495 | str = concat (sysroot, fname, NULL); | |
496 | else | |
497 | str = update_path (fname, ""); | |
16d6f994 | 498 | |
3dd53121 AP |
499 | add_path (str, SYSTEM, /*c++aware=*/false, false); |
500 | } | |
501 | } | |
502 | ||
94d1613b MS |
503 | |
504 | /* Register all the system framework paths if STDINC is true and setup | |
505 | the missing_header callback for subframework searching if any | |
506 | frameworks had been registered. */ | |
507 | ||
508 | void | |
479ec1d1 | 509 | darwin_register_frameworks (const char *sysroot, |
3dd53121 | 510 | const char *iprefix ATTRIBUTE_UNUSED, int stdinc) |
94d1613b MS |
511 | { |
512 | if (stdinc) | |
513 | { | |
514 | size_t i; | |
515 | ||
516 | /* Setup default search path for frameworks. */ | |
517 | for (i=0; i<sizeof (framework_defaults)/sizeof(const char *); ++i) | |
518 | { | |
479ec1d1 DP |
519 | char *str; |
520 | if (sysroot) | |
521 | str = concat (sysroot, xstrdup (framework_defaults [i]), NULL); | |
522 | else | |
523 | str = xstrdup (framework_defaults[i]); | |
94d1613b | 524 | /* System Framework headers are cxx aware. */ |
479ec1d1 | 525 | add_system_framework_path (str); |
94d1613b MS |
526 | } |
527 | } | |
528 | ||
529 | if (using_frameworks) | |
530 | cpp_get_callbacks (parse_in)->missing_header = find_subframework_header; | |
531 | } | |
532 | ||
533 | /* Search for HEADER in context dependent way. The return value is | |
534 | the malloced name of a header to try and open, if any, or NULL | |
535 | otherwise. This is called after normal header lookup processing | |
536 | fails to find a header. We search each file in the include stack, | |
537 | using FUNC, starting from the most deeply nested include and | |
538 | finishing with the main input file. We stop searching when FUNC | |
0e40b5f2 | 539 | returns nonzero. */ |
94d1613b MS |
540 | |
541 | static const char* | |
e3c287c9 | 542 | find_subframework_header (cpp_reader *pfile, const char *header, cpp_dir **dirp) |
94d1613b MS |
543 | { |
544 | const char *fname = header; | |
545 | struct cpp_buffer *b; | |
546 | const char *n; | |
547 | ||
548 | for (b = cpp_get_buffer (pfile); | |
549 | b && cpp_get_file (b) && cpp_get_path (cpp_get_file (b)); | |
550 | b = cpp_get_prev (b)) | |
551 | { | |
552 | n = find_subframework_file (fname, cpp_get_path (cpp_get_file (b))); | |
553 | if (n) | |
e3c287c9 MS |
554 | { |
555 | /* Logically, the place where we found the subframework is | |
556 | the place where we found the Framework that contains the | |
557 | subframework. This is useful for tracking wether or not | |
558 | we are in a system header. */ | |
559 | *dirp = cpp_get_dir (cpp_get_file (b)); | |
560 | return n; | |
561 | } | |
94d1613b MS |
562 | } |
563 | ||
564 | return 0; | |
565 | } | |
ed5b9f96 GK |
566 | |
567 | /* Return the value of darwin_macosx_version_min suitable for the | |
568 | __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ macro, | |
e46b55d0 GK |
569 | so '10.4.2' becomes 1040. The lowest digit is always zero. |
570 | Print a warning if the version number can't be understood. */ | |
ed5b9f96 GK |
571 | static const char * |
572 | version_as_macro (void) | |
573 | { | |
574 | static char result[] = "1000"; | |
16d6f994 | 575 | |
ed5b9f96 GK |
576 | if (strncmp (darwin_macosx_version_min, "10.", 3) != 0) |
577 | goto fail; | |
578 | if (! ISDIGIT (darwin_macosx_version_min[3])) | |
579 | goto fail; | |
580 | result[2] = darwin_macosx_version_min[3]; | |
e46b55d0 GK |
581 | if (darwin_macosx_version_min[4] != '\0' |
582 | && darwin_macosx_version_min[4] != '.') | |
583 | goto fail; | |
16d6f994 | 584 | |
ed5b9f96 | 585 | return result; |
16d6f994 | 586 | |
ed5b9f96 GK |
587 | fail: |
588 | error ("Unknown value %qs of -mmacosx-version-min", | |
589 | darwin_macosx_version_min); | |
590 | return "1000"; | |
591 | } | |
592 | ||
593 | /* Define additional CPP flags for Darwin. */ | |
594 | ||
595 | #define builtin_define(TXT) cpp_define (pfile, TXT) | |
596 | ||
597 | void | |
598 | darwin_cpp_builtins (cpp_reader *pfile) | |
599 | { | |
600 | builtin_define ("__MACH__"); | |
601 | builtin_define ("__APPLE__"); | |
602 | ||
603 | /* __APPLE_CC__ is defined as some old Apple include files expect it | |
604 | to be defined and won't work if it isn't. */ | |
605 | builtin_define_with_value ("__APPLE_CC__", "1", false); | |
606 | ||
e4cad568 GK |
607 | builtin_define_with_value ("__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__", |
608 | version_as_macro(), false); | |
ed5b9f96 | 609 | } |
1f1d5130 MS |
610 | |
611 | /* Handle C family front-end options. */ | |
612 | ||
613 | static bool | |
614 | handle_c_option (size_t code, | |
615 | const char *arg, | |
616 | int value ATTRIBUTE_UNUSED) | |
617 | { | |
618 | switch (code) | |
619 | { | |
620 | default: | |
621 | /* Unrecognized options that we said we'd handle turn into | |
622 | errors if not listed here. */ | |
623 | return false; | |
624 | ||
625 | case OPT_iframework: | |
626 | add_system_framework_path (xstrdup (arg)); | |
627 | break; | |
c40ce8f3 MS |
628 | |
629 | case OPT_fapple_kext: | |
630 | ; | |
1f1d5130 MS |
631 | } |
632 | ||
633 | /* We recognized the option. */ | |
634 | return true; | |
635 | } | |
636 | ||
637 | #undef TARGET_HANDLE_C_OPTION | |
638 | #define TARGET_HANDLE_C_OPTION handle_c_option | |
639 | ||
640 | struct gcc_targetcm targetcm = TARGETCM_INITIALIZER; |