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Commit | Line | Data |
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aa32d841 JL |
1 | /* Scan linker error messages for missing template instantiations and provide |
2 | them. | |
3 | ||
2d4bba80 | 4 | Copyright (C) 1995, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2007, 2008 |
46c5ad27 | 5 | Free Software Foundation, Inc. |
aa32d841 JL |
6 | Contributed by Jason Merrill (jason@cygnus.com). |
7 | ||
1322177d | 8 | This file is part of GCC. |
aa32d841 | 9 | |
1322177d LB |
10 | GCC is free software; you can redistribute it and/or modify it under |
11 | the terms of the GNU General Public License as published by the Free | |
9dcd6f09 | 12 | Software Foundation; either version 3, or (at your option) any later |
1322177d | 13 | version. |
aa32d841 | 14 | |
1322177d LB |
15 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
16 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
17 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
18 | for more details. | |
aa32d841 JL |
19 | |
20 | You should have received a copy of the GNU General Public License | |
9dcd6f09 NC |
21 | along with GCC; see the file COPYING3. If not see |
22 | <http://www.gnu.org/licenses/>. */ | |
aa32d841 | 23 | |
aa32d841 | 24 | #include "config.h" |
670ee920 | 25 | #include "system.h" |
4977bab6 ZW |
26 | #include "coretypes.h" |
27 | #include "tm.h" | |
993c790e | 28 | #include "intl.h" |
e2500fed GK |
29 | #include "obstack.h" |
30 | #include "hashtab.h" | |
aa32d841 | 31 | #include "demangle.h" |
2edfd4ee | 32 | #include "collect2.h" |
aa32d841 JL |
33 | |
34 | #define MAX_ITERATIONS 17 | |
35 | ||
aa32d841 JL |
36 | /* Defined in the automatically-generated underscore.c. */ |
37 | extern int prepends_underscore; | |
38 | ||
39 | static int tlink_verbose; | |
4185f1ce AN |
40 | |
41 | static char initial_cwd[MAXPATHLEN + 1]; | |
aa32d841 | 42 | \f |
e2500fed | 43 | /* Hash table boilerplate for working with htab_t. We have hash tables |
eb686064 | 44 | for symbol names, file names, and demangled symbols. */ |
aa32d841 JL |
45 | |
46 | typedef struct symbol_hash_entry | |
47 | { | |
e2500fed | 48 | const char *key; |
aa32d841 JL |
49 | struct file_hash_entry *file; |
50 | int chosen; | |
51 | int tweaking; | |
52 | int tweaked; | |
53 | } symbol; | |
54 | ||
55 | typedef struct file_hash_entry | |
56 | { | |
e2500fed | 57 | const char *key; |
aa32d841 JL |
58 | const char *args; |
59 | const char *dir; | |
60 | const char *main; | |
61 | int tweaking; | |
62 | } file; | |
63 | ||
64 | typedef struct demangled_hash_entry | |
65 | { | |
e2500fed | 66 | const char *key; |
aa32d841 JL |
67 | const char *mangled; |
68 | } demangled; | |
69 | ||
e2500fed GK |
70 | /* Hash and comparison functions for these hash tables. */ |
71 | ||
46c5ad27 AJ |
72 | static int hash_string_eq (const void *, const void *); |
73 | static hashval_t hash_string_hash (const void *); | |
e2500fed GK |
74 | |
75 | static int | |
46c5ad27 | 76 | hash_string_eq (const void *s1_p, const void *s2_p) |
e2500fed | 77 | { |
17fa74a2 KH |
78 | const char *const *s1 = (const char *const *) s1_p; |
79 | const char *s2 = (const char *) s2_p; | |
e2500fed GK |
80 | return strcmp (*s1, s2) == 0; |
81 | } | |
82 | ||
83 | static hashval_t | |
46c5ad27 | 84 | hash_string_hash (const void *s_p) |
e2500fed | 85 | { |
17fa74a2 | 86 | const char *const *s = (const char *const *) s_p; |
e2500fed GK |
87 | return (*htab_hash_string) (*s); |
88 | } | |
89 | ||
90 | static htab_t symbol_table; | |
aa32d841 | 91 | |
46c5ad27 AJ |
92 | static struct symbol_hash_entry * symbol_hash_lookup (const char *, int); |
93 | static struct file_hash_entry * file_hash_lookup (const char *); | |
94 | static struct demangled_hash_entry *demangled_hash_lookup (const char *, int); | |
95 | static void symbol_push (symbol *); | |
96 | static symbol * symbol_pop (void); | |
97 | static void file_push (file *); | |
98 | static file * file_pop (void); | |
99 | static void tlink_init (void); | |
68ec3111 | 100 | static int tlink_execute (const char *, char **, const char *, const char *); |
46c5ad27 AJ |
101 | static char * frob_extension (const char *, const char *); |
102 | static char * obstack_fgets (FILE *, struct obstack *); | |
103 | static char * tfgets (FILE *); | |
104 | static char * pfgets (FILE *); | |
105 | static void freadsym (FILE *, file *, int); | |
106 | static void read_repo_file (file *); | |
107 | static void maybe_tweak (char *, file *); | |
108 | static int recompile_files (void); | |
109 | static int read_repo_files (char **); | |
110 | static void demangle_new_symbols (void); | |
111 | static int scan_linker_output (const char *); | |
54ea1de9 | 112 | |
eb686064 JM |
113 | /* Look up an entry in the symbol hash table. */ |
114 | ||
aa32d841 | 115 | static struct symbol_hash_entry * |
46c5ad27 | 116 | symbol_hash_lookup (const char *string, int create) |
aa32d841 | 117 | { |
fad205ff | 118 | void **e; |
e2500fed | 119 | e = htab_find_slot_with_hash (symbol_table, string, |
17fa74a2 | 120 | (*htab_hash_string) (string), |
e2500fed GK |
121 | create ? INSERT : NO_INSERT); |
122 | if (e == NULL) | |
123 | return NULL; | |
124 | if (*e == NULL) | |
aa32d841 | 125 | { |
e2500fed | 126 | struct symbol_hash_entry *v; |
5ed6ace5 | 127 | *e = v = XCNEW (struct symbol_hash_entry); |
e2500fed | 128 | v->key = xstrdup (string); |
aa32d841 | 129 | } |
e1e4cdc4 | 130 | return (struct symbol_hash_entry *) *e; |
aa32d841 JL |
131 | } |
132 | ||
e2500fed GK |
133 | static htab_t file_table; |
134 | ||
eb686064 JM |
135 | /* Look up an entry in the file hash table. */ |
136 | ||
aa32d841 | 137 | static struct file_hash_entry * |
46c5ad27 | 138 | file_hash_lookup (const char *string) |
aa32d841 | 139 | { |
fad205ff | 140 | void **e; |
e2500fed | 141 | e = htab_find_slot_with_hash (file_table, string, |
17fa74a2 | 142 | (*htab_hash_string) (string), |
e2500fed GK |
143 | INSERT); |
144 | if (*e == NULL) | |
aa32d841 | 145 | { |
e2500fed | 146 | struct file_hash_entry *v; |
5ed6ace5 | 147 | *e = v = XCNEW (struct file_hash_entry); |
e2500fed | 148 | v->key = xstrdup (string); |
aa32d841 | 149 | } |
e1e4cdc4 | 150 | return (struct file_hash_entry *) *e; |
aa32d841 JL |
151 | } |
152 | ||
e2500fed GK |
153 | static htab_t demangled_table; |
154 | ||
eb686064 JM |
155 | /* Look up an entry in the demangled name hash table. */ |
156 | ||
aa32d841 | 157 | static struct demangled_hash_entry * |
46c5ad27 | 158 | demangled_hash_lookup (const char *string, int create) |
aa32d841 | 159 | { |
fad205ff | 160 | void **e; |
e2500fed | 161 | e = htab_find_slot_with_hash (demangled_table, string, |
17fa74a2 | 162 | (*htab_hash_string) (string), |
e2500fed GK |
163 | create ? INSERT : NO_INSERT); |
164 | if (e == NULL) | |
165 | return NULL; | |
166 | if (*e == NULL) | |
167 | { | |
168 | struct demangled_hash_entry *v; | |
5ed6ace5 | 169 | *e = v = XCNEW (struct demangled_hash_entry); |
e2500fed GK |
170 | v->key = xstrdup (string); |
171 | } | |
e1e4cdc4 | 172 | return (struct demangled_hash_entry *) *e; |
aa32d841 JL |
173 | } |
174 | \f | |
175 | /* Stack code. */ | |
176 | ||
177 | struct symbol_stack_entry | |
178 | { | |
179 | symbol *value; | |
180 | struct symbol_stack_entry *next; | |
181 | }; | |
182 | struct obstack symbol_stack_obstack; | |
183 | struct symbol_stack_entry *symbol_stack; | |
184 | ||
185 | struct file_stack_entry | |
186 | { | |
187 | file *value; | |
188 | struct file_stack_entry *next; | |
189 | }; | |
190 | struct obstack file_stack_obstack; | |
191 | struct file_stack_entry *file_stack; | |
192 | ||
193 | static void | |
46c5ad27 | 194 | symbol_push (symbol *p) |
aa32d841 | 195 | { |
e1e4cdc4 KG |
196 | struct symbol_stack_entry *ep |
197 | = XOBNEW (&symbol_stack_obstack, struct symbol_stack_entry); | |
aa32d841 JL |
198 | ep->value = p; |
199 | ep->next = symbol_stack; | |
200 | symbol_stack = ep; | |
201 | } | |
202 | ||
203 | static symbol * | |
46c5ad27 | 204 | symbol_pop (void) |
aa32d841 JL |
205 | { |
206 | struct symbol_stack_entry *ep = symbol_stack; | |
207 | symbol *p; | |
208 | if (ep == NULL) | |
209 | return NULL; | |
210 | p = ep->value; | |
211 | symbol_stack = ep->next; | |
212 | obstack_free (&symbol_stack_obstack, ep); | |
213 | return p; | |
214 | } | |
215 | ||
216 | static void | |
46c5ad27 | 217 | file_push (file *p) |
aa32d841 JL |
218 | { |
219 | struct file_stack_entry *ep; | |
220 | ||
221 | if (p->tweaking) | |
222 | return; | |
223 | ||
e1e4cdc4 | 224 | ep = XOBNEW (&file_stack_obstack, struct file_stack_entry); |
aa32d841 JL |
225 | ep->value = p; |
226 | ep->next = file_stack; | |
227 | file_stack = ep; | |
228 | p->tweaking = 1; | |
229 | } | |
230 | ||
231 | static file * | |
46c5ad27 | 232 | file_pop (void) |
aa32d841 JL |
233 | { |
234 | struct file_stack_entry *ep = file_stack; | |
235 | file *p; | |
236 | if (ep == NULL) | |
237 | return NULL; | |
238 | p = ep->value; | |
239 | file_stack = ep->next; | |
240 | obstack_free (&file_stack_obstack, ep); | |
241 | p->tweaking = 0; | |
242 | return p; | |
243 | } | |
244 | \f | |
245 | /* Other machinery. */ | |
246 | ||
eb686064 JM |
247 | /* Initialize the tlink machinery. Called from do_tlink. */ |
248 | ||
aa32d841 | 249 | static void |
46c5ad27 | 250 | tlink_init (void) |
aa32d841 | 251 | { |
d4058195 | 252 | const char *p; |
aa32d841 | 253 | |
e2500fed GK |
254 | symbol_table = htab_create (500, hash_string_hash, hash_string_eq, |
255 | NULL); | |
256 | file_table = htab_create (500, hash_string_hash, hash_string_eq, | |
257 | NULL); | |
258 | demangled_table = htab_create (500, hash_string_hash, hash_string_eq, | |
259 | NULL); | |
46c5ad27 | 260 | |
aa32d841 JL |
261 | obstack_begin (&symbol_stack_obstack, 0); |
262 | obstack_begin (&file_stack_obstack, 0); | |
263 | ||
264 | p = getenv ("TLINK_VERBOSE"); | |
265 | if (p) | |
266 | tlink_verbose = atoi (p); | |
267 | else | |
268 | { | |
269 | tlink_verbose = 1; | |
270 | if (vflag) | |
271 | tlink_verbose = 2; | |
272 | if (debug) | |
273 | tlink_verbose = 3; | |
274 | } | |
4185f1ce AN |
275 | |
276 | getcwd (initial_cwd, sizeof (initial_cwd)); | |
aa32d841 JL |
277 | } |
278 | ||
279 | static int | |
68ec3111 ILT |
280 | tlink_execute (const char *prog, char **argv, const char *outname, |
281 | const char *errname) | |
aa32d841 | 282 | { |
1fff69c9 ILT |
283 | struct pex_obj *pex; |
284 | ||
68ec3111 | 285 | pex = collect_execute (prog, argv, outname, errname); |
1fff69c9 | 286 | return collect_wait (prog, pex); |
d92b4486 | 287 | } |
aa32d841 JL |
288 | |
289 | static char * | |
46c5ad27 | 290 | frob_extension (const char *s, const char *ext) |
aa32d841 | 291 | { |
9473c522 | 292 | const char *p = strrchr (s, '/'); |
aa32d841 JL |
293 | if (! p) |
294 | p = s; | |
9473c522 | 295 | p = strrchr (p, '.'); |
aa32d841 JL |
296 | if (! p) |
297 | p = s + strlen (s); | |
298 | ||
299 | obstack_grow (&temporary_obstack, s, p - s); | |
e1e4cdc4 | 300 | return (char *) obstack_copy0 (&temporary_obstack, ext, strlen (ext)); |
aa32d841 JL |
301 | } |
302 | ||
303 | static char * | |
46c5ad27 | 304 | obstack_fgets (FILE *stream, struct obstack *ob) |
aa32d841 JL |
305 | { |
306 | int c; | |
307 | while ((c = getc (stream)) != EOF && c != '\n') | |
308 | obstack_1grow (ob, c); | |
309 | if (obstack_object_size (ob) == 0) | |
310 | return NULL; | |
311 | obstack_1grow (ob, '\0'); | |
7973fd2a | 312 | return XOBFINISH (ob, char *); |
aa32d841 JL |
313 | } |
314 | ||
315 | static char * | |
46c5ad27 | 316 | tfgets (FILE *stream) |
aa32d841 JL |
317 | { |
318 | return obstack_fgets (stream, &temporary_obstack); | |
319 | } | |
320 | ||
321 | static char * | |
46c5ad27 | 322 | pfgets (FILE *stream) |
aa32d841 | 323 | { |
6d9f628e | 324 | return xstrdup (tfgets (stream)); |
aa32d841 JL |
325 | } |
326 | \f | |
327 | /* Real tlink code. */ | |
328 | ||
eb686064 JM |
329 | /* Subroutine of read_repo_file. We are reading the repo file for file F, |
330 | which is coming in on STREAM, and the symbol that comes next in STREAM | |
14b493d6 | 331 | is offered, chosen or provided if CHOSEN is 0, 1 or 2, respectively. |
eb686064 JM |
332 | |
333 | XXX "provided" is unimplemented, both here and in the compiler. */ | |
334 | ||
aa32d841 | 335 | static void |
46c5ad27 | 336 | freadsym (FILE *stream, file *f, int chosen) |
aa32d841 JL |
337 | { |
338 | symbol *sym; | |
339 | ||
340 | { | |
d4058195 | 341 | const char *name = tfgets (stream); |
aa32d841 JL |
342 | sym = symbol_hash_lookup (name, true); |
343 | } | |
344 | ||
345 | if (sym->file == NULL) | |
346 | { | |
eb686064 JM |
347 | /* We didn't have this symbol already, so we choose this file. */ |
348 | ||
aa32d841 JL |
349 | symbol_push (sym); |
350 | sym->file = f; | |
351 | sym->chosen = chosen; | |
352 | } | |
353 | else if (chosen) | |
354 | { | |
eb686064 JM |
355 | /* We want this file; cast aside any pretender. */ |
356 | ||
aa32d841 JL |
357 | if (sym->chosen && sym->file != f) |
358 | { | |
359 | if (sym->chosen == 1) | |
360 | file_push (sym->file); | |
361 | else | |
362 | { | |
363 | file_push (f); | |
364 | f = sym->file; | |
365 | chosen = sym->chosen; | |
366 | } | |
367 | } | |
368 | sym->file = f; | |
369 | sym->chosen = chosen; | |
370 | } | |
371 | } | |
372 | ||
eb686064 JM |
373 | /* Read in the repo file denoted by F, and record all its information. */ |
374 | ||
aa32d841 | 375 | static void |
46c5ad27 | 376 | read_repo_file (file *f) |
aa32d841 JL |
377 | { |
378 | char c; | |
e2500fed | 379 | FILE *stream = fopen (f->key, "r"); |
aa32d841 JL |
380 | |
381 | if (tlink_verbose >= 2) | |
e2500fed | 382 | fprintf (stderr, _("collect: reading %s\n"), f->key); |
aa32d841 JL |
383 | |
384 | while (fscanf (stream, "%c ", &c) == 1) | |
385 | { | |
386 | switch (c) | |
387 | { | |
388 | case 'A': | |
389 | f->args = pfgets (stream); | |
390 | break; | |
391 | case 'D': | |
392 | f->dir = pfgets (stream); | |
393 | break; | |
394 | case 'M': | |
395 | f->main = pfgets (stream); | |
396 | break; | |
397 | case 'P': | |
398 | freadsym (stream, f, 2); | |
399 | break; | |
400 | case 'C': | |
401 | freadsym (stream, f, 1); | |
402 | break; | |
403 | case 'O': | |
404 | freadsym (stream, f, 0); | |
405 | break; | |
406 | } | |
407 | obstack_free (&temporary_obstack, temporary_firstobj); | |
408 | } | |
409 | fclose (stream); | |
410 | if (f->args == NULL) | |
411 | f->args = getenv ("COLLECT_GCC_OPTIONS"); | |
412 | if (f->dir == NULL) | |
413 | f->dir = "."; | |
414 | } | |
415 | ||
eb686064 JM |
416 | /* We might want to modify LINE, which is a symbol line from file F. We do |
417 | this if either we saw an error message referring to the symbol in | |
418 | question, or we have already allocated the symbol to another file and | |
419 | this one wants to emit it as well. */ | |
420 | ||
aa32d841 | 421 | static void |
46c5ad27 | 422 | maybe_tweak (char *line, file *f) |
aa32d841 JL |
423 | { |
424 | symbol *sym = symbol_hash_lookup (line + 2, false); | |
425 | ||
426 | if ((sym->file == f && sym->tweaking) | |
427 | || (sym->file != f && line[0] == 'C')) | |
428 | { | |
429 | sym->tweaking = 0; | |
430 | sym->tweaked = 1; | |
431 | ||
432 | if (line[0] == 'O') | |
433 | line[0] = 'C'; | |
434 | else | |
435 | line[0] = 'O'; | |
436 | } | |
437 | } | |
438 | ||
eb686064 | 439 | /* Update the repo files for each of the object files we have adjusted and |
4185f1ce | 440 | recompile. */ |
eb686064 | 441 | |
aa32d841 | 442 | static int |
46c5ad27 | 443 | recompile_files (void) |
aa32d841 JL |
444 | { |
445 | file *f; | |
446 | ||
e4d72771 KJ |
447 | putenv (xstrdup ("COMPILER_PATH=")); |
448 | putenv (xstrdup ("LIBRARY_PATH=")); | |
d92b4486 | 449 | |
aa32d841 JL |
450 | while ((f = file_pop ()) != NULL) |
451 | { | |
4185f1ce AN |
452 | char *line; |
453 | const char *p, *q; | |
454 | char **argv; | |
455 | struct obstack arg_stack; | |
e2500fed GK |
456 | FILE *stream = fopen (f->key, "r"); |
457 | const char *const outname = frob_extension (f->key, ".rnw"); | |
aa32d841 JL |
458 | FILE *output = fopen (outname, "w"); |
459 | ||
460 | while ((line = tfgets (stream)) != NULL) | |
461 | { | |
462 | switch (line[0]) | |
463 | { | |
464 | case 'C': | |
465 | case 'O': | |
466 | maybe_tweak (line, f); | |
467 | } | |
468 | fprintf (output, "%s\n", line); | |
469 | } | |
470 | fclose (stream); | |
471 | fclose (output); | |
2d8a7f23 DS |
472 | /* On Windows "rename" returns -1 and sets ERRNO to EACCESS if |
473 | the new file name already exists. Therefore, we explicitly | |
474 | remove the old file first. */ | |
475 | if (remove (f->key) == -1) | |
476 | fatal_perror ("removing .rpo file"); | |
477 | if (rename (outname, f->key) == -1) | |
478 | fatal_perror ("renaming .rpo file"); | |
aa32d841 | 479 | |
4684cd27 MM |
480 | if (!f->args) |
481 | { | |
9e637a26 | 482 | error ("repository file '%s' does not contain command-line " |
4684cd27 MM |
483 | "arguments", f->key); |
484 | return 0; | |
485 | } | |
4185f1ce AN |
486 | |
487 | /* Build a null-terminated argv array suitable for | |
488 | tlink_execute(). Manipulate arguments on the arg_stack while | |
489 | building argv on the temporary_obstack. */ | |
490 | ||
491 | obstack_init (&arg_stack); | |
492 | obstack_ptr_grow (&temporary_obstack, c_file_name); | |
493 | ||
494 | for (p = f->args; *p != '\0'; p = q + 1) | |
495 | { | |
496 | /* Arguments are delimited by single-quotes. Find the | |
497 | opening quote. */ | |
498 | p = strchr (p, '\''); | |
499 | if (!p) | |
500 | goto done; | |
501 | ||
502 | /* Find the closing quote. */ | |
503 | q = strchr (p + 1, '\''); | |
504 | if (!q) | |
505 | goto done; | |
506 | ||
507 | obstack_grow (&arg_stack, p + 1, q - (p + 1)); | |
508 | ||
509 | /* Replace '\'' with '. This is how set_collect_gcc_options | |
510 | encodes a single-quote. */ | |
511 | while (q[1] == '\\' && q[2] == '\'' && q[3] == '\'') | |
512 | { | |
513 | const char *r; | |
514 | ||
515 | r = strchr (q + 4, '\''); | |
516 | if (!r) | |
517 | goto done; | |
518 | ||
519 | obstack_grow (&arg_stack, q + 3, r - (q + 3)); | |
520 | q = r; | |
521 | } | |
522 | ||
523 | obstack_1grow (&arg_stack, '\0'); | |
524 | obstack_ptr_grow (&temporary_obstack, obstack_finish (&arg_stack)); | |
525 | } | |
526 | done: | |
527 | obstack_ptr_grow (&temporary_obstack, f->main); | |
528 | obstack_ptr_grow (&temporary_obstack, NULL); | |
7973fd2a | 529 | argv = XOBFINISH (&temporary_obstack, char **); |
aa32d841 JL |
530 | |
531 | if (tlink_verbose) | |
5e4adfba | 532 | fprintf (stderr, _("collect: recompiling %s\n"), f->main); |
aa32d841 | 533 | |
4185f1ce | 534 | if (chdir (f->dir) != 0 |
68ec3111 | 535 | || tlink_execute (c_file_name, argv, NULL, NULL) != 0 |
4185f1ce | 536 | || chdir (initial_cwd) != 0) |
aa32d841 JL |
537 | return 0; |
538 | ||
539 | read_repo_file (f); | |
540 | ||
4185f1ce | 541 | obstack_free (&arg_stack, NULL); |
aa32d841 JL |
542 | obstack_free (&temporary_obstack, temporary_firstobj); |
543 | } | |
544 | return 1; | |
545 | } | |
546 | ||
eb686064 JM |
547 | /* The first phase of processing: determine which object files have |
548 | .rpo files associated with them, and read in the information. */ | |
549 | ||
aa32d841 | 550 | static int |
46c5ad27 | 551 | read_repo_files (char **object_lst) |
aa32d841 JL |
552 | { |
553 | char **object = object_lst; | |
554 | ||
555 | for (; *object; object++) | |
556 | { | |
2c561874 | 557 | const char *p; |
aa32d841 JL |
558 | file *f; |
559 | ||
2c561874 JM |
560 | /* Don't bother trying for ld flags. */ |
561 | if (*object[0] == '-') | |
562 | continue; | |
563 | ||
564 | p = frob_extension (*object, ".rpo"); | |
565 | ||
aa32d841 JL |
566 | if (! file_exists (p)) |
567 | continue; | |
568 | ||
569 | f = file_hash_lookup (p); | |
570 | ||
571 | read_repo_file (f); | |
572 | } | |
573 | ||
574 | if (file_stack != NULL && ! recompile_files ()) | |
575 | return 0; | |
576 | ||
577 | return (symbol_stack != NULL); | |
578 | } | |
579 | ||
eb686064 JM |
580 | /* Add the demangled forms of any new symbols to the hash table. */ |
581 | ||
aa32d841 | 582 | static void |
46c5ad27 | 583 | demangle_new_symbols (void) |
aa32d841 JL |
584 | { |
585 | symbol *sym; | |
586 | ||
587 | while ((sym = symbol_pop ()) != NULL) | |
588 | { | |
589 | demangled *dem; | |
e2500fed | 590 | const char *p = cplus_demangle (sym->key, DMGL_PARAMS | DMGL_ANSI); |
aa32d841 JL |
591 | |
592 | if (! p) | |
593 | continue; | |
594 | ||
595 | dem = demangled_hash_lookup (p, true); | |
e2500fed | 596 | dem->mangled = sym->key; |
aa32d841 JL |
597 | } |
598 | } | |
599 | ||
eb686064 JM |
600 | /* Step through the output of the linker, in the file named FNAME, and |
601 | adjust the settings for each symbol encountered. */ | |
602 | ||
aa32d841 | 603 | static int |
46c5ad27 | 604 | scan_linker_output (const char *fname) |
aa32d841 JL |
605 | { |
606 | FILE *stream = fopen (fname, "r"); | |
607 | char *line; | |
e7d406d5 | 608 | int skip_next_in_line = 0; |
aa32d841 JL |
609 | |
610 | while ((line = tfgets (stream)) != NULL) | |
611 | { | |
612 | char *p = line, *q; | |
613 | symbol *sym; | |
614 | int end; | |
196bea21 MS |
615 | int ok = 0; |
616 | ||
e7d406d5 MS |
617 | /* On darwin9, we might have to skip " in " lines as well. */ |
618 | if (skip_next_in_line | |
619 | && strstr (p, " in ")) | |
40728134 | 620 | continue; |
e7d406d5 | 621 | skip_next_in_line = 0; |
d92b4486 | 622 | |
17fa74a2 | 623 | while (*p && ISSPACE ((unsigned char) *p)) |
aa32d841 JL |
624 | ++p; |
625 | ||
626 | if (! *p) | |
627 | continue; | |
628 | ||
17fa74a2 | 629 | for (q = p; *q && ! ISSPACE ((unsigned char) *q); ++q) |
aa32d841 JL |
630 | ; |
631 | ||
632 | /* Try the first word on the line. */ | |
633 | if (*p == '.') | |
634 | ++p; | |
3fd9d606 ZW |
635 | if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) |
636 | p += strlen (USER_LABEL_PREFIX); | |
aa32d841 JL |
637 | |
638 | end = ! *q; | |
639 | *q = 0; | |
640 | sym = symbol_hash_lookup (p, false); | |
641 | ||
644c7c4f GK |
642 | /* Some SVR4 linkers produce messages like |
643 | ld: 0711-317 ERROR: Undefined symbol: .g__t3foo1Zi | |
644 | */ | |
17fa74a2 | 645 | if (! sym && ! end && strstr (q + 1, "Undefined symbol: ")) |
644c7c4f | 646 | { |
17fa74a2 | 647 | char *p = strrchr (q + 1, ' '); |
644c7c4f GK |
648 | p++; |
649 | if (*p == '.') | |
650 | p++; | |
3fd9d606 ZW |
651 | if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) |
652 | p += strlen (USER_LABEL_PREFIX); | |
644c7c4f GK |
653 | sym = symbol_hash_lookup (p, false); |
654 | } | |
655 | ||
aa32d841 | 656 | if (! sym && ! end) |
b4558b57 | 657 | /* Try a mangled name in quotes. */ |
aa32d841 | 658 | { |
e5cfc29f | 659 | char *oldq = q + 1; |
aa32d841 | 660 | demangled *dem = 0; |
aa32d841 JL |
661 | q = 0; |
662 | ||
e7d406d5 | 663 | /* On darwin9, we look for "foo" referenced from:\n\(.* in .*\n\)* */ |
196bea21 MS |
664 | if (strcmp (oldq, "referenced from:") == 0) |
665 | { | |
666 | /* We have to remember that we found a symbol to tweak. */ | |
667 | ok = 1; | |
668 | ||
e7d406d5 MS |
669 | /* We actually want to start from the first word on the |
670 | line. */ | |
196bea21 MS |
671 | oldq = p; |
672 | ||
e7d406d5 MS |
673 | /* Since the format is multiline, we have to skip |
674 | following lines with " in ". */ | |
675 | skip_next_in_line = 1; | |
196bea21 MS |
676 | } |
677 | ||
b4558b57 | 678 | /* First try `GNU style'. */ |
9473c522 | 679 | p = strchr (oldq, '`'); |
b4558b57 | 680 | if (p) |
9473c522 | 681 | p++, q = strchr (p, '\''); |
b4558b57 | 682 | /* Then try "double quotes". */ |
9473c522 JM |
683 | else if (p = strchr (oldq, '"'), p) |
684 | p++, q = strchr (p, '"'); | |
2d4bba80 ILT |
685 | /* Then try 'single quotes'. */ |
686 | else if (p = strchr (oldq, '\''), p) | |
687 | p++, q = strchr (p, '\''); | |
973a43f6 MS |
688 | else { |
689 | /* Then try entire line. */ | |
690 | q = strchr (oldq, 0); | |
691 | if (q != oldq) | |
a7050d49 | 692 | p = (char *)oldq; |
973a43f6 | 693 | } |
aa32d841 | 694 | |
6ff7fb95 | 695 | if (p) |
8ace9f18 AM |
696 | { |
697 | /* Don't let the strstr's below see the demangled name; we | |
698 | might get spurious matches. */ | |
699 | p[-1] = '\0'; | |
700 | ||
701 | /* powerpc64-linux references .foo when calling function foo. */ | |
702 | if (*p == '.') | |
703 | p++; | |
704 | } | |
6ff7fb95 | 705 | |
57be4e89 JM |
706 | /* We need to check for certain error keywords here, or we would |
707 | mistakenly use GNU ld's "In function `foo':" message. */ | |
196bea21 MS |
708 | if (q && (ok |
709 | || strstr (oldq, "ndefined") | |
3f94eee6 | 710 | || strstr (oldq, "nresolved") |
eb20f668 | 711 | || strstr (oldq, "nsatisfied") |
57be4e89 | 712 | || strstr (oldq, "ultiple"))) |
aa32d841 | 713 | { |
b4558b57 JM |
714 | *q = 0; |
715 | dem = demangled_hash_lookup (p, false); | |
716 | if (dem) | |
717 | sym = symbol_hash_lookup (dem->mangled, false); | |
718 | else | |
d92b4486 | 719 | { |
3fd9d606 ZW |
720 | if (!strncmp (p, USER_LABEL_PREFIX, |
721 | strlen (USER_LABEL_PREFIX))) | |
722 | p += strlen (USER_LABEL_PREFIX); | |
9c5b50b3 JM |
723 | sym = symbol_hash_lookup (p, false); |
724 | } | |
aa32d841 | 725 | } |
aa32d841 JL |
726 | } |
727 | ||
728 | if (sym && sym->tweaked) | |
7b6ffd11 | 729 | { |
9e637a26 | 730 | error ("'%s' was assigned to '%s', but was not defined " |
4684cd27 MM |
731 | "during recompilation, or vice versa", |
732 | sym->key, sym->file->key); | |
7b6ffd11 KI |
733 | fclose (stream); |
734 | return 0; | |
735 | } | |
aa32d841 JL |
736 | if (sym && !sym->tweaking) |
737 | { | |
738 | if (tlink_verbose >= 2) | |
5e4adfba | 739 | fprintf (stderr, _("collect: tweaking %s in %s\n"), |
e2500fed | 740 | sym->key, sym->file->key); |
aa32d841 JL |
741 | sym->tweaking = 1; |
742 | file_push (sym->file); | |
743 | } | |
d92b4486 | 744 | |
aa32d841 JL |
745 | obstack_free (&temporary_obstack, temporary_firstobj); |
746 | } | |
747 | ||
7b6ffd11 | 748 | fclose (stream); |
aa32d841 JL |
749 | return (file_stack != NULL); |
750 | } | |
751 | ||
eb686064 JM |
752 | /* Entry point for tlink. Called from main in collect2.c. |
753 | ||
754 | Iteratively try to provide definitions for all the unresolved symbols | |
755 | mentioned in the linker error messages. | |
756 | ||
757 | LD_ARGV is an array of arguments for the linker. | |
758 | OBJECT_LST is an array of object files that we may be able to recompile | |
759 | to provide missing definitions. Currently ignored. */ | |
760 | ||
aa32d841 | 761 | void |
46c5ad27 | 762 | do_tlink (char **ld_argv, char **object_lst ATTRIBUTE_UNUSED) |
aa32d841 | 763 | { |
68ec3111 | 764 | int exit = tlink_execute ("ld", ld_argv, ldout, lderrout); |
aa32d841 JL |
765 | |
766 | tlink_init (); | |
767 | ||
768 | if (exit) | |
769 | { | |
770 | int i = 0; | |
771 | ||
772 | /* Until collect does a better job of figuring out which are object | |
773 | files, assume that everything on the command line could be. */ | |
774 | if (read_repo_files (ld_argv)) | |
775 | while (exit && i++ < MAX_ITERATIONS) | |
776 | { | |
777 | if (tlink_verbose >= 3) | |
68ec3111 ILT |
778 | { |
779 | dump_file (ldout, stdout); | |
780 | dump_file (lderrout, stderr); | |
781 | } | |
aa32d841 | 782 | demangle_new_symbols (); |
68ec3111 ILT |
783 | if (! scan_linker_output (ldout) |
784 | && ! scan_linker_output (lderrout)) | |
aa32d841 JL |
785 | break; |
786 | if (! recompile_files ()) | |
787 | break; | |
788 | if (tlink_verbose) | |
5e4adfba | 789 | fprintf (stderr, _("collect: relinking\n")); |
68ec3111 | 790 | exit = tlink_execute ("ld", ld_argv, ldout, lderrout); |
aa32d841 JL |
791 | } |
792 | } | |
793 | ||
68ec3111 | 794 | dump_file (ldout, stdout); |
aa32d841 | 795 | unlink (ldout); |
68ec3111 ILT |
796 | dump_file (lderrout, stderr); |
797 | unlink (lderrout); | |
aa32d841 JL |
798 | if (exit) |
799 | { | |
800 | error ("ld returned %d exit status", exit); | |
801 | collect_exit (exit); | |
802 | } | |
803 | } |