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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 | ||
1fff69c9 | 4 | Copyright (C) 1995, 1998, 1999, 2000, 2001, 2003, 2004, 2005 |
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 | |
12 | Software Foundation; either version 2, or (at your option) any later | |
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 | |
1322177d LB |
21 | along with GCC; see the file COPYING. If not, write to the Free |
22 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
23 | 02111-1307, USA. */ | |
aa32d841 | 24 | |
aa32d841 | 25 | #include "config.h" |
670ee920 | 26 | #include "system.h" |
4977bab6 ZW |
27 | #include "coretypes.h" |
28 | #include "tm.h" | |
993c790e | 29 | #include "intl.h" |
e2500fed GK |
30 | #include "obstack.h" |
31 | #include "hashtab.h" | |
aa32d841 | 32 | #include "demangle.h" |
2edfd4ee | 33 | #include "collect2.h" |
aa32d841 JL |
34 | |
35 | #define MAX_ITERATIONS 17 | |
36 | ||
aa32d841 JL |
37 | /* Defined in the automatically-generated underscore.c. */ |
38 | extern int prepends_underscore; | |
39 | ||
40 | static int tlink_verbose; | |
4185f1ce AN |
41 | |
42 | static char initial_cwd[MAXPATHLEN + 1]; | |
aa32d841 | 43 | \f |
e2500fed | 44 | /* Hash table boilerplate for working with htab_t. We have hash tables |
eb686064 | 45 | for symbol names, file names, and demangled symbols. */ |
aa32d841 JL |
46 | |
47 | typedef struct symbol_hash_entry | |
48 | { | |
e2500fed | 49 | const char *key; |
aa32d841 JL |
50 | struct file_hash_entry *file; |
51 | int chosen; | |
52 | int tweaking; | |
53 | int tweaked; | |
54 | } symbol; | |
55 | ||
56 | typedef struct file_hash_entry | |
57 | { | |
e2500fed | 58 | const char *key; |
aa32d841 JL |
59 | const char *args; |
60 | const char *dir; | |
61 | const char *main; | |
62 | int tweaking; | |
63 | } file; | |
64 | ||
65 | typedef struct demangled_hash_entry | |
66 | { | |
e2500fed | 67 | const char *key; |
aa32d841 JL |
68 | const char *mangled; |
69 | } demangled; | |
70 | ||
e2500fed GK |
71 | /* Hash and comparison functions for these hash tables. */ |
72 | ||
46c5ad27 AJ |
73 | static int hash_string_eq (const void *, const void *); |
74 | static hashval_t hash_string_hash (const void *); | |
e2500fed GK |
75 | |
76 | static int | |
46c5ad27 | 77 | hash_string_eq (const void *s1_p, const void *s2_p) |
e2500fed | 78 | { |
17fa74a2 KH |
79 | const char *const *s1 = (const char *const *) s1_p; |
80 | const char *s2 = (const char *) s2_p; | |
e2500fed GK |
81 | return strcmp (*s1, s2) == 0; |
82 | } | |
83 | ||
84 | static hashval_t | |
46c5ad27 | 85 | hash_string_hash (const void *s_p) |
e2500fed | 86 | { |
17fa74a2 | 87 | const char *const *s = (const char *const *) s_p; |
e2500fed GK |
88 | return (*htab_hash_string) (*s); |
89 | } | |
90 | ||
91 | static htab_t symbol_table; | |
aa32d841 | 92 | |
46c5ad27 AJ |
93 | static struct symbol_hash_entry * symbol_hash_lookup (const char *, int); |
94 | static struct file_hash_entry * file_hash_lookup (const char *); | |
95 | static struct demangled_hash_entry *demangled_hash_lookup (const char *, int); | |
96 | static void symbol_push (symbol *); | |
97 | static symbol * symbol_pop (void); | |
98 | static void file_push (file *); | |
99 | static file * file_pop (void); | |
100 | static void tlink_init (void); | |
101 | static int tlink_execute (const char *, char **, const char *); | |
102 | static char * frob_extension (const char *, const char *); | |
103 | static char * obstack_fgets (FILE *, struct obstack *); | |
104 | static char * tfgets (FILE *); | |
105 | static char * pfgets (FILE *); | |
106 | static void freadsym (FILE *, file *, int); | |
107 | static void read_repo_file (file *); | |
108 | static void maybe_tweak (char *, file *); | |
109 | static int recompile_files (void); | |
110 | static int read_repo_files (char **); | |
111 | static void demangle_new_symbols (void); | |
112 | static int scan_linker_output (const char *); | |
54ea1de9 | 113 | |
eb686064 JM |
114 | /* Look up an entry in the symbol hash table. */ |
115 | ||
aa32d841 | 116 | static struct symbol_hash_entry * |
46c5ad27 | 117 | symbol_hash_lookup (const char *string, int create) |
aa32d841 | 118 | { |
fad205ff | 119 | void **e; |
e2500fed | 120 | e = htab_find_slot_with_hash (symbol_table, string, |
17fa74a2 | 121 | (*htab_hash_string) (string), |
e2500fed GK |
122 | create ? INSERT : NO_INSERT); |
123 | if (e == NULL) | |
124 | return NULL; | |
125 | if (*e == NULL) | |
aa32d841 | 126 | { |
e2500fed GK |
127 | struct symbol_hash_entry *v; |
128 | *e = v = xcalloc (1, sizeof (*v)); | |
129 | v->key = xstrdup (string); | |
aa32d841 | 130 | } |
e2500fed | 131 | return *e; |
aa32d841 JL |
132 | } |
133 | ||
e2500fed GK |
134 | static htab_t file_table; |
135 | ||
eb686064 JM |
136 | /* Look up an entry in the file hash table. */ |
137 | ||
aa32d841 | 138 | static struct file_hash_entry * |
46c5ad27 | 139 | file_hash_lookup (const char *string) |
aa32d841 | 140 | { |
fad205ff | 141 | void **e; |
e2500fed | 142 | e = htab_find_slot_with_hash (file_table, string, |
17fa74a2 | 143 | (*htab_hash_string) (string), |
e2500fed GK |
144 | INSERT); |
145 | if (*e == NULL) | |
aa32d841 | 146 | { |
e2500fed GK |
147 | struct file_hash_entry *v; |
148 | *e = v = xcalloc (1, sizeof (*v)); | |
149 | v->key = xstrdup (string); | |
aa32d841 | 150 | } |
e2500fed | 151 | return *e; |
aa32d841 JL |
152 | } |
153 | ||
e2500fed GK |
154 | static htab_t demangled_table; |
155 | ||
eb686064 JM |
156 | /* Look up an entry in the demangled name hash table. */ |
157 | ||
aa32d841 | 158 | static struct demangled_hash_entry * |
46c5ad27 | 159 | demangled_hash_lookup (const char *string, int create) |
aa32d841 | 160 | { |
fad205ff | 161 | void **e; |
e2500fed | 162 | e = htab_find_slot_with_hash (demangled_table, string, |
17fa74a2 | 163 | (*htab_hash_string) (string), |
e2500fed GK |
164 | create ? INSERT : NO_INSERT); |
165 | if (e == NULL) | |
166 | return NULL; | |
167 | if (*e == NULL) | |
168 | { | |
169 | struct demangled_hash_entry *v; | |
170 | *e = v = xcalloc (1, sizeof (*v)); | |
171 | v->key = xstrdup (string); | |
172 | } | |
173 | return *e; | |
aa32d841 JL |
174 | } |
175 | \f | |
176 | /* Stack code. */ | |
177 | ||
178 | struct symbol_stack_entry | |
179 | { | |
180 | symbol *value; | |
181 | struct symbol_stack_entry *next; | |
182 | }; | |
183 | struct obstack symbol_stack_obstack; | |
184 | struct symbol_stack_entry *symbol_stack; | |
185 | ||
186 | struct file_stack_entry | |
187 | { | |
188 | file *value; | |
189 | struct file_stack_entry *next; | |
190 | }; | |
191 | struct obstack file_stack_obstack; | |
192 | struct file_stack_entry *file_stack; | |
193 | ||
194 | static void | |
46c5ad27 | 195 | symbol_push (symbol *p) |
aa32d841 | 196 | { |
703ad42b | 197 | struct symbol_stack_entry *ep = obstack_alloc |
aa32d841 JL |
198 | (&symbol_stack_obstack, sizeof (struct symbol_stack_entry)); |
199 | ep->value = p; | |
200 | ep->next = symbol_stack; | |
201 | symbol_stack = ep; | |
202 | } | |
203 | ||
204 | static symbol * | |
46c5ad27 | 205 | symbol_pop (void) |
aa32d841 JL |
206 | { |
207 | struct symbol_stack_entry *ep = symbol_stack; | |
208 | symbol *p; | |
209 | if (ep == NULL) | |
210 | return NULL; | |
211 | p = ep->value; | |
212 | symbol_stack = ep->next; | |
213 | obstack_free (&symbol_stack_obstack, ep); | |
214 | return p; | |
215 | } | |
216 | ||
217 | static void | |
46c5ad27 | 218 | file_push (file *p) |
aa32d841 JL |
219 | { |
220 | struct file_stack_entry *ep; | |
221 | ||
222 | if (p->tweaking) | |
223 | return; | |
224 | ||
703ad42b | 225 | ep = obstack_alloc |
aa32d841 JL |
226 | (&file_stack_obstack, sizeof (struct file_stack_entry)); |
227 | ep->value = p; | |
228 | ep->next = file_stack; | |
229 | file_stack = ep; | |
230 | p->tweaking = 1; | |
231 | } | |
232 | ||
233 | static file * | |
46c5ad27 | 234 | file_pop (void) |
aa32d841 JL |
235 | { |
236 | struct file_stack_entry *ep = file_stack; | |
237 | file *p; | |
238 | if (ep == NULL) | |
239 | return NULL; | |
240 | p = ep->value; | |
241 | file_stack = ep->next; | |
242 | obstack_free (&file_stack_obstack, ep); | |
243 | p->tweaking = 0; | |
244 | return p; | |
245 | } | |
246 | \f | |
247 | /* Other machinery. */ | |
248 | ||
eb686064 JM |
249 | /* Initialize the tlink machinery. Called from do_tlink. */ |
250 | ||
aa32d841 | 251 | static void |
46c5ad27 | 252 | tlink_init (void) |
aa32d841 | 253 | { |
d4058195 | 254 | const char *p; |
aa32d841 | 255 | |
e2500fed GK |
256 | symbol_table = htab_create (500, hash_string_hash, hash_string_eq, |
257 | NULL); | |
258 | file_table = htab_create (500, hash_string_hash, hash_string_eq, | |
259 | NULL); | |
260 | demangled_table = htab_create (500, hash_string_hash, hash_string_eq, | |
261 | NULL); | |
46c5ad27 | 262 | |
aa32d841 JL |
263 | obstack_begin (&symbol_stack_obstack, 0); |
264 | obstack_begin (&file_stack_obstack, 0); | |
265 | ||
266 | p = getenv ("TLINK_VERBOSE"); | |
267 | if (p) | |
268 | tlink_verbose = atoi (p); | |
269 | else | |
270 | { | |
271 | tlink_verbose = 1; | |
272 | if (vflag) | |
273 | tlink_verbose = 2; | |
274 | if (debug) | |
275 | tlink_verbose = 3; | |
276 | } | |
4185f1ce AN |
277 | |
278 | getcwd (initial_cwd, sizeof (initial_cwd)); | |
aa32d841 JL |
279 | } |
280 | ||
281 | static int | |
46c5ad27 | 282 | tlink_execute (const char *prog, char **argv, const char *redir) |
aa32d841 | 283 | { |
1fff69c9 ILT |
284 | struct pex_obj *pex; |
285 | ||
286 | pex = collect_execute (prog, argv, redir); | |
287 | return collect_wait (prog, pex); | |
d92b4486 | 288 | } |
aa32d841 JL |
289 | |
290 | static char * | |
46c5ad27 | 291 | frob_extension (const char *s, const char *ext) |
aa32d841 | 292 | { |
9473c522 | 293 | const char *p = strrchr (s, '/'); |
aa32d841 JL |
294 | if (! p) |
295 | p = s; | |
9473c522 | 296 | p = strrchr (p, '.'); |
aa32d841 JL |
297 | if (! p) |
298 | p = s + strlen (s); | |
299 | ||
300 | obstack_grow (&temporary_obstack, s, p - s); | |
301 | return obstack_copy0 (&temporary_obstack, ext, strlen (ext)); | |
302 | } | |
303 | ||
304 | static char * | |
46c5ad27 | 305 | obstack_fgets (FILE *stream, struct obstack *ob) |
aa32d841 JL |
306 | { |
307 | int c; | |
308 | while ((c = getc (stream)) != EOF && c != '\n') | |
309 | obstack_1grow (ob, c); | |
310 | if (obstack_object_size (ob) == 0) | |
311 | return NULL; | |
312 | obstack_1grow (ob, '\0'); | |
313 | return obstack_finish (ob); | |
314 | } | |
315 | ||
316 | static char * | |
46c5ad27 | 317 | tfgets (FILE *stream) |
aa32d841 JL |
318 | { |
319 | return obstack_fgets (stream, &temporary_obstack); | |
320 | } | |
321 | ||
322 | static char * | |
46c5ad27 | 323 | pfgets (FILE *stream) |
aa32d841 | 324 | { |
6d9f628e | 325 | return xstrdup (tfgets (stream)); |
aa32d841 JL |
326 | } |
327 | \f | |
328 | /* Real tlink code. */ | |
329 | ||
eb686064 JM |
330 | /* Subroutine of read_repo_file. We are reading the repo file for file F, |
331 | which is coming in on STREAM, and the symbol that comes next in STREAM | |
14b493d6 | 332 | is offered, chosen or provided if CHOSEN is 0, 1 or 2, respectively. |
eb686064 JM |
333 | |
334 | XXX "provided" is unimplemented, both here and in the compiler. */ | |
335 | ||
aa32d841 | 336 | static void |
46c5ad27 | 337 | freadsym (FILE *stream, file *f, int chosen) |
aa32d841 JL |
338 | { |
339 | symbol *sym; | |
340 | ||
341 | { | |
d4058195 | 342 | const char *name = tfgets (stream); |
aa32d841 JL |
343 | sym = symbol_hash_lookup (name, true); |
344 | } | |
345 | ||
346 | if (sym->file == NULL) | |
347 | { | |
eb686064 JM |
348 | /* We didn't have this symbol already, so we choose this file. */ |
349 | ||
aa32d841 JL |
350 | symbol_push (sym); |
351 | sym->file = f; | |
352 | sym->chosen = chosen; | |
353 | } | |
354 | else if (chosen) | |
355 | { | |
eb686064 JM |
356 | /* We want this file; cast aside any pretender. */ |
357 | ||
aa32d841 JL |
358 | if (sym->chosen && sym->file != f) |
359 | { | |
360 | if (sym->chosen == 1) | |
361 | file_push (sym->file); | |
362 | else | |
363 | { | |
364 | file_push (f); | |
365 | f = sym->file; | |
366 | chosen = sym->chosen; | |
367 | } | |
368 | } | |
369 | sym->file = f; | |
370 | sym->chosen = chosen; | |
371 | } | |
372 | } | |
373 | ||
eb686064 JM |
374 | /* Read in the repo file denoted by F, and record all its information. */ |
375 | ||
aa32d841 | 376 | static void |
46c5ad27 | 377 | read_repo_file (file *f) |
aa32d841 JL |
378 | { |
379 | char c; | |
e2500fed | 380 | FILE *stream = fopen (f->key, "r"); |
aa32d841 JL |
381 | |
382 | if (tlink_verbose >= 2) | |
e2500fed | 383 | fprintf (stderr, _("collect: reading %s\n"), f->key); |
aa32d841 JL |
384 | |
385 | while (fscanf (stream, "%c ", &c) == 1) | |
386 | { | |
387 | switch (c) | |
388 | { | |
389 | case 'A': | |
390 | f->args = pfgets (stream); | |
391 | break; | |
392 | case 'D': | |
393 | f->dir = pfgets (stream); | |
394 | break; | |
395 | case 'M': | |
396 | f->main = pfgets (stream); | |
397 | break; | |
398 | case 'P': | |
399 | freadsym (stream, f, 2); | |
400 | break; | |
401 | case 'C': | |
402 | freadsym (stream, f, 1); | |
403 | break; | |
404 | case 'O': | |
405 | freadsym (stream, f, 0); | |
406 | break; | |
407 | } | |
408 | obstack_free (&temporary_obstack, temporary_firstobj); | |
409 | } | |
410 | fclose (stream); | |
411 | if (f->args == NULL) | |
412 | f->args = getenv ("COLLECT_GCC_OPTIONS"); | |
413 | if (f->dir == NULL) | |
414 | f->dir = "."; | |
415 | } | |
416 | ||
eb686064 JM |
417 | /* We might want to modify LINE, which is a symbol line from file F. We do |
418 | this if either we saw an error message referring to the symbol in | |
419 | question, or we have already allocated the symbol to another file and | |
420 | this one wants to emit it as well. */ | |
421 | ||
aa32d841 | 422 | static void |
46c5ad27 | 423 | maybe_tweak (char *line, file *f) |
aa32d841 JL |
424 | { |
425 | symbol *sym = symbol_hash_lookup (line + 2, false); | |
426 | ||
427 | if ((sym->file == f && sym->tweaking) | |
428 | || (sym->file != f && line[0] == 'C')) | |
429 | { | |
430 | sym->tweaking = 0; | |
431 | sym->tweaked = 1; | |
432 | ||
433 | if (line[0] == 'O') | |
434 | line[0] = 'C'; | |
435 | else | |
436 | line[0] = 'O'; | |
437 | } | |
438 | } | |
439 | ||
eb686064 | 440 | /* Update the repo files for each of the object files we have adjusted and |
4185f1ce | 441 | recompile. */ |
eb686064 | 442 | |
aa32d841 | 443 | static int |
46c5ad27 | 444 | recompile_files (void) |
aa32d841 JL |
445 | { |
446 | file *f; | |
447 | ||
e4d72771 KJ |
448 | putenv (xstrdup ("COMPILER_PATH=")); |
449 | putenv (xstrdup ("LIBRARY_PATH=")); | |
d92b4486 | 450 | |
aa32d841 JL |
451 | while ((f = file_pop ()) != NULL) |
452 | { | |
4185f1ce AN |
453 | char *line; |
454 | const char *p, *q; | |
455 | char **argv; | |
456 | struct obstack arg_stack; | |
e2500fed GK |
457 | FILE *stream = fopen (f->key, "r"); |
458 | const char *const outname = frob_extension (f->key, ".rnw"); | |
aa32d841 JL |
459 | FILE *output = fopen (outname, "w"); |
460 | ||
461 | while ((line = tfgets (stream)) != NULL) | |
462 | { | |
463 | switch (line[0]) | |
464 | { | |
465 | case 'C': | |
466 | case 'O': | |
467 | maybe_tweak (line, f); | |
468 | } | |
469 | fprintf (output, "%s\n", line); | |
470 | } | |
471 | fclose (stream); | |
472 | fclose (output); | |
2d8a7f23 DS |
473 | /* On Windows "rename" returns -1 and sets ERRNO to EACCESS if |
474 | the new file name already exists. Therefore, we explicitly | |
475 | remove the old file first. */ | |
476 | if (remove (f->key) == -1) | |
477 | fatal_perror ("removing .rpo file"); | |
478 | if (rename (outname, f->key) == -1) | |
479 | fatal_perror ("renaming .rpo file"); | |
aa32d841 | 480 | |
4684cd27 MM |
481 | if (!f->args) |
482 | { | |
9e637a26 | 483 | error ("repository file '%s' does not contain command-line " |
4684cd27 MM |
484 | "arguments", f->key); |
485 | return 0; | |
486 | } | |
4185f1ce AN |
487 | |
488 | /* Build a null-terminated argv array suitable for | |
489 | tlink_execute(). Manipulate arguments on the arg_stack while | |
490 | building argv on the temporary_obstack. */ | |
491 | ||
492 | obstack_init (&arg_stack); | |
493 | obstack_ptr_grow (&temporary_obstack, c_file_name); | |
494 | ||
495 | for (p = f->args; *p != '\0'; p = q + 1) | |
496 | { | |
497 | /* Arguments are delimited by single-quotes. Find the | |
498 | opening quote. */ | |
499 | p = strchr (p, '\''); | |
500 | if (!p) | |
501 | goto done; | |
502 | ||
503 | /* Find the closing quote. */ | |
504 | q = strchr (p + 1, '\''); | |
505 | if (!q) | |
506 | goto done; | |
507 | ||
508 | obstack_grow (&arg_stack, p + 1, q - (p + 1)); | |
509 | ||
510 | /* Replace '\'' with '. This is how set_collect_gcc_options | |
511 | encodes a single-quote. */ | |
512 | while (q[1] == '\\' && q[2] == '\'' && q[3] == '\'') | |
513 | { | |
514 | const char *r; | |
515 | ||
516 | r = strchr (q + 4, '\''); | |
517 | if (!r) | |
518 | goto done; | |
519 | ||
520 | obstack_grow (&arg_stack, q + 3, r - (q + 3)); | |
521 | q = r; | |
522 | } | |
523 | ||
524 | obstack_1grow (&arg_stack, '\0'); | |
525 | obstack_ptr_grow (&temporary_obstack, obstack_finish (&arg_stack)); | |
526 | } | |
527 | done: | |
528 | obstack_ptr_grow (&temporary_obstack, f->main); | |
529 | obstack_ptr_grow (&temporary_obstack, NULL); | |
530 | argv = obstack_finish (&temporary_obstack); | |
aa32d841 JL |
531 | |
532 | if (tlink_verbose) | |
5e4adfba | 533 | fprintf (stderr, _("collect: recompiling %s\n"), f->main); |
aa32d841 | 534 | |
4185f1ce AN |
535 | if (chdir (f->dir) != 0 |
536 | || tlink_execute (c_file_name, argv, NULL) != 0 | |
537 | || chdir (initial_cwd) != 0) | |
aa32d841 JL |
538 | return 0; |
539 | ||
540 | read_repo_file (f); | |
541 | ||
4185f1ce | 542 | obstack_free (&arg_stack, NULL); |
aa32d841 JL |
543 | obstack_free (&temporary_obstack, temporary_firstobj); |
544 | } | |
545 | return 1; | |
546 | } | |
547 | ||
eb686064 JM |
548 | /* The first phase of processing: determine which object files have |
549 | .rpo files associated with them, and read in the information. */ | |
550 | ||
aa32d841 | 551 | static int |
46c5ad27 | 552 | read_repo_files (char **object_lst) |
aa32d841 JL |
553 | { |
554 | char **object = object_lst; | |
555 | ||
556 | for (; *object; object++) | |
557 | { | |
2c561874 | 558 | const char *p; |
aa32d841 JL |
559 | file *f; |
560 | ||
2c561874 JM |
561 | /* Don't bother trying for ld flags. */ |
562 | if (*object[0] == '-') | |
563 | continue; | |
564 | ||
565 | p = frob_extension (*object, ".rpo"); | |
566 | ||
aa32d841 JL |
567 | if (! file_exists (p)) |
568 | continue; | |
569 | ||
570 | f = file_hash_lookup (p); | |
571 | ||
572 | read_repo_file (f); | |
573 | } | |
574 | ||
575 | if (file_stack != NULL && ! recompile_files ()) | |
576 | return 0; | |
577 | ||
578 | return (symbol_stack != NULL); | |
579 | } | |
580 | ||
eb686064 JM |
581 | /* Add the demangled forms of any new symbols to the hash table. */ |
582 | ||
aa32d841 | 583 | static void |
46c5ad27 | 584 | demangle_new_symbols (void) |
aa32d841 JL |
585 | { |
586 | symbol *sym; | |
587 | ||
588 | while ((sym = symbol_pop ()) != NULL) | |
589 | { | |
590 | demangled *dem; | |
e2500fed | 591 | const char *p = cplus_demangle (sym->key, DMGL_PARAMS | DMGL_ANSI); |
aa32d841 JL |
592 | |
593 | if (! p) | |
594 | continue; | |
595 | ||
596 | dem = demangled_hash_lookup (p, true); | |
e2500fed | 597 | dem->mangled = sym->key; |
aa32d841 JL |
598 | } |
599 | } | |
600 | ||
eb686064 JM |
601 | /* Step through the output of the linker, in the file named FNAME, and |
602 | adjust the settings for each symbol encountered. */ | |
603 | ||
aa32d841 | 604 | static int |
46c5ad27 | 605 | scan_linker_output (const char *fname) |
aa32d841 JL |
606 | { |
607 | FILE *stream = fopen (fname, "r"); | |
608 | char *line; | |
609 | ||
610 | while ((line = tfgets (stream)) != NULL) | |
611 | { | |
612 | char *p = line, *q; | |
613 | symbol *sym; | |
614 | int end; | |
d92b4486 | 615 | |
17fa74a2 | 616 | while (*p && ISSPACE ((unsigned char) *p)) |
aa32d841 JL |
617 | ++p; |
618 | ||
619 | if (! *p) | |
620 | continue; | |
621 | ||
17fa74a2 | 622 | for (q = p; *q && ! ISSPACE ((unsigned char) *q); ++q) |
aa32d841 JL |
623 | ; |
624 | ||
625 | /* Try the first word on the line. */ | |
626 | if (*p == '.') | |
627 | ++p; | |
3fd9d606 ZW |
628 | if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) |
629 | p += strlen (USER_LABEL_PREFIX); | |
aa32d841 JL |
630 | |
631 | end = ! *q; | |
632 | *q = 0; | |
633 | sym = symbol_hash_lookup (p, false); | |
634 | ||
644c7c4f GK |
635 | /* Some SVR4 linkers produce messages like |
636 | ld: 0711-317 ERROR: Undefined symbol: .g__t3foo1Zi | |
637 | */ | |
17fa74a2 | 638 | if (! sym && ! end && strstr (q + 1, "Undefined symbol: ")) |
644c7c4f | 639 | { |
17fa74a2 | 640 | char *p = strrchr (q + 1, ' '); |
644c7c4f GK |
641 | p++; |
642 | if (*p == '.') | |
643 | p++; | |
3fd9d606 ZW |
644 | if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) |
645 | p += strlen (USER_LABEL_PREFIX); | |
644c7c4f GK |
646 | sym = symbol_hash_lookup (p, false); |
647 | } | |
648 | ||
aa32d841 | 649 | if (! sym && ! end) |
b4558b57 | 650 | /* Try a mangled name in quotes. */ |
aa32d841 | 651 | { |
17fa74a2 | 652 | const char *oldq = q + 1; |
aa32d841 | 653 | demangled *dem = 0; |
aa32d841 JL |
654 | q = 0; |
655 | ||
b4558b57 | 656 | /* First try `GNU style'. */ |
9473c522 | 657 | p = strchr (oldq, '`'); |
b4558b57 | 658 | if (p) |
9473c522 | 659 | p++, q = strchr (p, '\''); |
b4558b57 | 660 | /* Then try "double quotes". */ |
9473c522 JM |
661 | else if (p = strchr (oldq, '"'), p) |
662 | p++, q = strchr (p, '"'); | |
973a43f6 MS |
663 | else { |
664 | /* Then try entire line. */ | |
665 | q = strchr (oldq, 0); | |
666 | if (q != oldq) | |
a7050d49 | 667 | p = (char *)oldq; |
973a43f6 | 668 | } |
aa32d841 | 669 | |
6ff7fb95 | 670 | if (p) |
8ace9f18 AM |
671 | { |
672 | /* Don't let the strstr's below see the demangled name; we | |
673 | might get spurious matches. */ | |
674 | p[-1] = '\0'; | |
675 | ||
676 | /* powerpc64-linux references .foo when calling function foo. */ | |
677 | if (*p == '.') | |
678 | p++; | |
679 | } | |
6ff7fb95 | 680 | |
57be4e89 JM |
681 | /* We need to check for certain error keywords here, or we would |
682 | mistakenly use GNU ld's "In function `foo':" message. */ | |
683 | if (q && (strstr (oldq, "ndefined") | |
3f94eee6 | 684 | || strstr (oldq, "nresolved") |
eb20f668 | 685 | || strstr (oldq, "nsatisfied") |
57be4e89 | 686 | || strstr (oldq, "ultiple"))) |
aa32d841 | 687 | { |
b4558b57 JM |
688 | *q = 0; |
689 | dem = demangled_hash_lookup (p, false); | |
690 | if (dem) | |
691 | sym = symbol_hash_lookup (dem->mangled, false); | |
692 | else | |
d92b4486 | 693 | { |
3fd9d606 ZW |
694 | if (!strncmp (p, USER_LABEL_PREFIX, |
695 | strlen (USER_LABEL_PREFIX))) | |
696 | p += strlen (USER_LABEL_PREFIX); | |
9c5b50b3 JM |
697 | sym = symbol_hash_lookup (p, false); |
698 | } | |
aa32d841 | 699 | } |
aa32d841 JL |
700 | } |
701 | ||
702 | if (sym && sym->tweaked) | |
7b6ffd11 | 703 | { |
9e637a26 | 704 | error ("'%s' was assigned to '%s', but was not defined " |
4684cd27 MM |
705 | "during recompilation, or vice versa", |
706 | sym->key, sym->file->key); | |
7b6ffd11 KI |
707 | fclose (stream); |
708 | return 0; | |
709 | } | |
aa32d841 JL |
710 | if (sym && !sym->tweaking) |
711 | { | |
712 | if (tlink_verbose >= 2) | |
5e4adfba | 713 | fprintf (stderr, _("collect: tweaking %s in %s\n"), |
e2500fed | 714 | sym->key, sym->file->key); |
aa32d841 JL |
715 | sym->tweaking = 1; |
716 | file_push (sym->file); | |
717 | } | |
d92b4486 | 718 | |
aa32d841 JL |
719 | obstack_free (&temporary_obstack, temporary_firstobj); |
720 | } | |
721 | ||
7b6ffd11 | 722 | fclose (stream); |
aa32d841 JL |
723 | return (file_stack != NULL); |
724 | } | |
725 | ||
eb686064 JM |
726 | /* Entry point for tlink. Called from main in collect2.c. |
727 | ||
728 | Iteratively try to provide definitions for all the unresolved symbols | |
729 | mentioned in the linker error messages. | |
730 | ||
731 | LD_ARGV is an array of arguments for the linker. | |
732 | OBJECT_LST is an array of object files that we may be able to recompile | |
733 | to provide missing definitions. Currently ignored. */ | |
734 | ||
aa32d841 | 735 | void |
46c5ad27 | 736 | do_tlink (char **ld_argv, char **object_lst ATTRIBUTE_UNUSED) |
aa32d841 JL |
737 | { |
738 | int exit = tlink_execute ("ld", ld_argv, ldout); | |
739 | ||
740 | tlink_init (); | |
741 | ||
742 | if (exit) | |
743 | { | |
744 | int i = 0; | |
745 | ||
746 | /* Until collect does a better job of figuring out which are object | |
747 | files, assume that everything on the command line could be. */ | |
748 | if (read_repo_files (ld_argv)) | |
749 | while (exit && i++ < MAX_ITERATIONS) | |
750 | { | |
751 | if (tlink_verbose >= 3) | |
752 | dump_file (ldout); | |
753 | demangle_new_symbols (); | |
754 | if (! scan_linker_output (ldout)) | |
755 | break; | |
756 | if (! recompile_files ()) | |
757 | break; | |
758 | if (tlink_verbose) | |
5e4adfba | 759 | fprintf (stderr, _("collect: relinking\n")); |
aa32d841 JL |
760 | exit = tlink_execute ("ld", ld_argv, ldout); |
761 | } | |
762 | } | |
763 | ||
764 | dump_file (ldout); | |
765 | unlink (ldout); | |
766 | if (exit) | |
767 | { | |
768 | error ("ld returned %d exit status", exit); | |
769 | collect_exit (exit); | |
770 | } | |
771 | } |