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Commit | Line | Data |
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94ca3aab | 1 | /* Scan linker error messages for missing template instantiations and provide |
2 | them. | |
3 | ||
0ba508e4 | 4 | Copyright (C) 1995, 1998, 1999, 2000, 2001, 2003, 2004 |
60b8c5b3 | 5 | Free Software Foundation, Inc. |
94ca3aab | 6 | Contributed by Jason Merrill (jason@cygnus.com). |
7 | ||
f12b58b3 | 8 | This file is part of GCC. |
94ca3aab | 9 | |
f12b58b3 | 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. | |
94ca3aab | 14 | |
f12b58b3 | 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. | |
94ca3aab | 19 | |
20 | You should have received a copy of the GNU General Public License | |
f12b58b3 | 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. */ | |
94ca3aab | 24 | |
94ca3aab | 25 | #include "config.h" |
405711de | 26 | #include "system.h" |
805e22b2 | 27 | #include "coretypes.h" |
28 | #include "tm.h" | |
6e6e5faa | 29 | #include "intl.h" |
1f3233d1 | 30 | #include "obstack.h" |
31 | #include "hashtab.h" | |
94ca3aab | 32 | #include "demangle.h" |
1ae13971 | 33 | #include "collect2.h" |
94ca3aab | 34 | |
35 | #define MAX_ITERATIONS 17 | |
36 | ||
94ca3aab | 37 | /* Defined in the automatically-generated underscore.c. */ |
38 | extern int prepends_underscore; | |
39 | ||
40 | static int tlink_verbose; | |
05a7239a | 41 | |
42 | static char initial_cwd[MAXPATHLEN + 1]; | |
94ca3aab | 43 | \f |
1f3233d1 | 44 | /* Hash table boilerplate for working with htab_t. We have hash tables |
56e06438 | 45 | for symbol names, file names, and demangled symbols. */ |
94ca3aab | 46 | |
47 | typedef struct symbol_hash_entry | |
48 | { | |
1f3233d1 | 49 | const char *key; |
94ca3aab | 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 | { | |
1f3233d1 | 58 | const char *key; |
94ca3aab | 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 | { | |
1f3233d1 | 67 | const char *key; |
94ca3aab | 68 | const char *mangled; |
69 | } demangled; | |
70 | ||
1f3233d1 | 71 | /* Hash and comparison functions for these hash tables. */ |
72 | ||
60b8c5b3 | 73 | static int hash_string_eq (const void *, const void *); |
74 | static hashval_t hash_string_hash (const void *); | |
1f3233d1 | 75 | |
76 | static int | |
60b8c5b3 | 77 | hash_string_eq (const void *s1_p, const void *s2_p) |
1f3233d1 | 78 | { |
513b1ebe | 79 | const char *const *s1 = (const char *const *) s1_p; |
80 | const char *s2 = (const char *) s2_p; | |
1f3233d1 | 81 | return strcmp (*s1, s2) == 0; |
82 | } | |
83 | ||
84 | static hashval_t | |
60b8c5b3 | 85 | hash_string_hash (const void *s_p) |
1f3233d1 | 86 | { |
513b1ebe | 87 | const char *const *s = (const char *const *) s_p; |
1f3233d1 | 88 | return (*htab_hash_string) (*s); |
89 | } | |
90 | ||
91 | static htab_t symbol_table; | |
94ca3aab | 92 | |
60b8c5b3 | 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 *); | |
0809af09 | 113 | |
56e06438 | 114 | /* Look up an entry in the symbol hash table. */ |
115 | ||
94ca3aab | 116 | static struct symbol_hash_entry * |
60b8c5b3 | 117 | symbol_hash_lookup (const char *string, int create) |
94ca3aab | 118 | { |
b9a7cc69 | 119 | void **e; |
1f3233d1 | 120 | e = htab_find_slot_with_hash (symbol_table, string, |
513b1ebe | 121 | (*htab_hash_string) (string), |
1f3233d1 | 122 | create ? INSERT : NO_INSERT); |
123 | if (e == NULL) | |
124 | return NULL; | |
125 | if (*e == NULL) | |
94ca3aab | 126 | { |
1f3233d1 | 127 | struct symbol_hash_entry *v; |
128 | *e = v = xcalloc (1, sizeof (*v)); | |
129 | v->key = xstrdup (string); | |
94ca3aab | 130 | } |
1f3233d1 | 131 | return *e; |
94ca3aab | 132 | } |
133 | ||
1f3233d1 | 134 | static htab_t file_table; |
135 | ||
56e06438 | 136 | /* Look up an entry in the file hash table. */ |
137 | ||
94ca3aab | 138 | static struct file_hash_entry * |
60b8c5b3 | 139 | file_hash_lookup (const char *string) |
94ca3aab | 140 | { |
b9a7cc69 | 141 | void **e; |
1f3233d1 | 142 | e = htab_find_slot_with_hash (file_table, string, |
513b1ebe | 143 | (*htab_hash_string) (string), |
1f3233d1 | 144 | INSERT); |
145 | if (*e == NULL) | |
94ca3aab | 146 | { |
1f3233d1 | 147 | struct file_hash_entry *v; |
148 | *e = v = xcalloc (1, sizeof (*v)); | |
149 | v->key = xstrdup (string); | |
94ca3aab | 150 | } |
1f3233d1 | 151 | return *e; |
94ca3aab | 152 | } |
153 | ||
1f3233d1 | 154 | static htab_t demangled_table; |
155 | ||
56e06438 | 156 | /* Look up an entry in the demangled name hash table. */ |
157 | ||
94ca3aab | 158 | static struct demangled_hash_entry * |
60b8c5b3 | 159 | demangled_hash_lookup (const char *string, int create) |
94ca3aab | 160 | { |
b9a7cc69 | 161 | void **e; |
1f3233d1 | 162 | e = htab_find_slot_with_hash (demangled_table, string, |
513b1ebe | 163 | (*htab_hash_string) (string), |
1f3233d1 | 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; | |
94ca3aab | 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 | |
60b8c5b3 | 195 | symbol_push (symbol *p) |
94ca3aab | 196 | { |
f0af5a88 | 197 | struct symbol_stack_entry *ep = obstack_alloc |
94ca3aab | 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 * | |
60b8c5b3 | 205 | symbol_pop (void) |
94ca3aab | 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 | |
60b8c5b3 | 218 | file_push (file *p) |
94ca3aab | 219 | { |
220 | struct file_stack_entry *ep; | |
221 | ||
222 | if (p->tweaking) | |
223 | return; | |
224 | ||
f0af5a88 | 225 | ep = obstack_alloc |
94ca3aab | 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 * | |
60b8c5b3 | 234 | file_pop (void) |
94ca3aab | 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 | ||
56e06438 | 249 | /* Initialize the tlink machinery. Called from do_tlink. */ |
250 | ||
94ca3aab | 251 | static void |
60b8c5b3 | 252 | tlink_init (void) |
94ca3aab | 253 | { |
e504db4a | 254 | const char *p; |
94ca3aab | 255 | |
1f3233d1 | 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); | |
60b8c5b3 | 262 | |
94ca3aab | 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 | } | |
05a7239a | 277 | |
278 | getcwd (initial_cwd, sizeof (initial_cwd)); | |
94ca3aab | 279 | } |
280 | ||
281 | static int | |
60b8c5b3 | 282 | tlink_execute (const char *prog, char **argv, const char *redir) |
94ca3aab | 283 | { |
284 | collect_execute (prog, argv, redir); | |
285 | return collect_wait (prog); | |
40570cc2 | 286 | } |
94ca3aab | 287 | |
288 | static char * | |
60b8c5b3 | 289 | frob_extension (const char *s, const char *ext) |
94ca3aab | 290 | { |
78dbff7c | 291 | const char *p = strrchr (s, '/'); |
94ca3aab | 292 | if (! p) |
293 | p = s; | |
78dbff7c | 294 | p = strrchr (p, '.'); |
94ca3aab | 295 | if (! p) |
296 | p = s + strlen (s); | |
297 | ||
298 | obstack_grow (&temporary_obstack, s, p - s); | |
299 | return obstack_copy0 (&temporary_obstack, ext, strlen (ext)); | |
300 | } | |
301 | ||
302 | static char * | |
60b8c5b3 | 303 | obstack_fgets (FILE *stream, struct obstack *ob) |
94ca3aab | 304 | { |
305 | int c; | |
306 | while ((c = getc (stream)) != EOF && c != '\n') | |
307 | obstack_1grow (ob, c); | |
308 | if (obstack_object_size (ob) == 0) | |
309 | return NULL; | |
310 | obstack_1grow (ob, '\0'); | |
311 | return obstack_finish (ob); | |
312 | } | |
313 | ||
314 | static char * | |
60b8c5b3 | 315 | tfgets (FILE *stream) |
94ca3aab | 316 | { |
317 | return obstack_fgets (stream, &temporary_obstack); | |
318 | } | |
319 | ||
320 | static char * | |
60b8c5b3 | 321 | pfgets (FILE *stream) |
94ca3aab | 322 | { |
92192583 | 323 | return xstrdup (tfgets (stream)); |
94ca3aab | 324 | } |
325 | \f | |
326 | /* Real tlink code. */ | |
327 | ||
56e06438 | 328 | /* Subroutine of read_repo_file. We are reading the repo file for file F, |
329 | which is coming in on STREAM, and the symbol that comes next in STREAM | |
de132707 | 330 | is offered, chosen or provided if CHOSEN is 0, 1 or 2, respectively. |
56e06438 | 331 | |
332 | XXX "provided" is unimplemented, both here and in the compiler. */ | |
333 | ||
94ca3aab | 334 | static void |
60b8c5b3 | 335 | freadsym (FILE *stream, file *f, int chosen) |
94ca3aab | 336 | { |
337 | symbol *sym; | |
338 | ||
339 | { | |
e504db4a | 340 | const char *name = tfgets (stream); |
94ca3aab | 341 | sym = symbol_hash_lookup (name, true); |
342 | } | |
343 | ||
344 | if (sym->file == NULL) | |
345 | { | |
56e06438 | 346 | /* We didn't have this symbol already, so we choose this file. */ |
347 | ||
94ca3aab | 348 | symbol_push (sym); |
349 | sym->file = f; | |
350 | sym->chosen = chosen; | |
351 | } | |
352 | else if (chosen) | |
353 | { | |
56e06438 | 354 | /* We want this file; cast aside any pretender. */ |
355 | ||
94ca3aab | 356 | if (sym->chosen && sym->file != f) |
357 | { | |
358 | if (sym->chosen == 1) | |
359 | file_push (sym->file); | |
360 | else | |
361 | { | |
362 | file_push (f); | |
363 | f = sym->file; | |
364 | chosen = sym->chosen; | |
365 | } | |
366 | } | |
367 | sym->file = f; | |
368 | sym->chosen = chosen; | |
369 | } | |
370 | } | |
371 | ||
56e06438 | 372 | /* Read in the repo file denoted by F, and record all its information. */ |
373 | ||
94ca3aab | 374 | static void |
60b8c5b3 | 375 | read_repo_file (file *f) |
94ca3aab | 376 | { |
377 | char c; | |
1f3233d1 | 378 | FILE *stream = fopen (f->key, "r"); |
94ca3aab | 379 | |
380 | if (tlink_verbose >= 2) | |
1f3233d1 | 381 | fprintf (stderr, _("collect: reading %s\n"), f->key); |
94ca3aab | 382 | |
383 | while (fscanf (stream, "%c ", &c) == 1) | |
384 | { | |
385 | switch (c) | |
386 | { | |
387 | case 'A': | |
388 | f->args = pfgets (stream); | |
389 | break; | |
390 | case 'D': | |
391 | f->dir = pfgets (stream); | |
392 | break; | |
393 | case 'M': | |
394 | f->main = pfgets (stream); | |
395 | break; | |
396 | case 'P': | |
397 | freadsym (stream, f, 2); | |
398 | break; | |
399 | case 'C': | |
400 | freadsym (stream, f, 1); | |
401 | break; | |
402 | case 'O': | |
403 | freadsym (stream, f, 0); | |
404 | break; | |
405 | } | |
406 | obstack_free (&temporary_obstack, temporary_firstobj); | |
407 | } | |
408 | fclose (stream); | |
409 | if (f->args == NULL) | |
410 | f->args = getenv ("COLLECT_GCC_OPTIONS"); | |
411 | if (f->dir == NULL) | |
412 | f->dir = "."; | |
413 | } | |
414 | ||
56e06438 | 415 | /* We might want to modify LINE, which is a symbol line from file F. We do |
416 | this if either we saw an error message referring to the symbol in | |
417 | question, or we have already allocated the symbol to another file and | |
418 | this one wants to emit it as well. */ | |
419 | ||
94ca3aab | 420 | static void |
60b8c5b3 | 421 | maybe_tweak (char *line, file *f) |
94ca3aab | 422 | { |
423 | symbol *sym = symbol_hash_lookup (line + 2, false); | |
424 | ||
425 | if ((sym->file == f && sym->tweaking) | |
426 | || (sym->file != f && line[0] == 'C')) | |
427 | { | |
428 | sym->tweaking = 0; | |
429 | sym->tweaked = 1; | |
430 | ||
431 | if (line[0] == 'O') | |
432 | line[0] = 'C'; | |
433 | else | |
434 | line[0] = 'O'; | |
435 | } | |
436 | } | |
437 | ||
56e06438 | 438 | /* Update the repo files for each of the object files we have adjusted and |
05a7239a | 439 | recompile. */ |
56e06438 | 440 | |
94ca3aab | 441 | static int |
60b8c5b3 | 442 | recompile_files (void) |
94ca3aab | 443 | { |
444 | file *f; | |
445 | ||
ce75e2bb | 446 | putenv (xstrdup ("COMPILER_PATH=")); |
447 | putenv (xstrdup ("LIBRARY_PATH=")); | |
40570cc2 | 448 | |
94ca3aab | 449 | while ((f = file_pop ()) != NULL) |
450 | { | |
05a7239a | 451 | char *line; |
452 | const char *p, *q; | |
453 | char **argv; | |
454 | struct obstack arg_stack; | |
1f3233d1 | 455 | FILE *stream = fopen (f->key, "r"); |
456 | const char *const outname = frob_extension (f->key, ".rnw"); | |
94ca3aab | 457 | FILE *output = fopen (outname, "w"); |
458 | ||
459 | while ((line = tfgets (stream)) != NULL) | |
460 | { | |
461 | switch (line[0]) | |
462 | { | |
463 | case 'C': | |
464 | case 'O': | |
465 | maybe_tweak (line, f); | |
466 | } | |
467 | fprintf (output, "%s\n", line); | |
468 | } | |
469 | fclose (stream); | |
470 | fclose (output); | |
1f3233d1 | 471 | rename (outname, f->key); |
94ca3aab | 472 | |
caa6fdce | 473 | if (!f->args) |
474 | { | |
475 | error ("repository file `%s' does not contain command-line " | |
476 | "arguments", f->key); | |
477 | return 0; | |
478 | } | |
05a7239a | 479 | |
480 | /* Build a null-terminated argv array suitable for | |
481 | tlink_execute(). Manipulate arguments on the arg_stack while | |
482 | building argv on the temporary_obstack. */ | |
483 | ||
484 | obstack_init (&arg_stack); | |
485 | obstack_ptr_grow (&temporary_obstack, c_file_name); | |
486 | ||
487 | for (p = f->args; *p != '\0'; p = q + 1) | |
488 | { | |
489 | /* Arguments are delimited by single-quotes. Find the | |
490 | opening quote. */ | |
491 | p = strchr (p, '\''); | |
492 | if (!p) | |
493 | goto done; | |
494 | ||
495 | /* Find the closing quote. */ | |
496 | q = strchr (p + 1, '\''); | |
497 | if (!q) | |
498 | goto done; | |
499 | ||
500 | obstack_grow (&arg_stack, p + 1, q - (p + 1)); | |
501 | ||
502 | /* Replace '\'' with '. This is how set_collect_gcc_options | |
503 | encodes a single-quote. */ | |
504 | while (q[1] == '\\' && q[2] == '\'' && q[3] == '\'') | |
505 | { | |
506 | const char *r; | |
507 | ||
508 | r = strchr (q + 4, '\''); | |
509 | if (!r) | |
510 | goto done; | |
511 | ||
512 | obstack_grow (&arg_stack, q + 3, r - (q + 3)); | |
513 | q = r; | |
514 | } | |
515 | ||
516 | obstack_1grow (&arg_stack, '\0'); | |
517 | obstack_ptr_grow (&temporary_obstack, obstack_finish (&arg_stack)); | |
518 | } | |
519 | done: | |
520 | obstack_ptr_grow (&temporary_obstack, f->main); | |
521 | obstack_ptr_grow (&temporary_obstack, NULL); | |
522 | argv = obstack_finish (&temporary_obstack); | |
94ca3aab | 523 | |
524 | if (tlink_verbose) | |
a4db0a1d | 525 | fprintf (stderr, _("collect: recompiling %s\n"), f->main); |
94ca3aab | 526 | |
05a7239a | 527 | if (chdir (f->dir) != 0 |
528 | || tlink_execute (c_file_name, argv, NULL) != 0 | |
529 | || chdir (initial_cwd) != 0) | |
94ca3aab | 530 | return 0; |
531 | ||
532 | read_repo_file (f); | |
533 | ||
05a7239a | 534 | obstack_free (&arg_stack, NULL); |
94ca3aab | 535 | obstack_free (&temporary_obstack, temporary_firstobj); |
536 | } | |
537 | return 1; | |
538 | } | |
539 | ||
56e06438 | 540 | /* The first phase of processing: determine which object files have |
541 | .rpo files associated with them, and read in the information. */ | |
542 | ||
94ca3aab | 543 | static int |
60b8c5b3 | 544 | read_repo_files (char **object_lst) |
94ca3aab | 545 | { |
546 | char **object = object_lst; | |
547 | ||
548 | for (; *object; object++) | |
549 | { | |
d823001a | 550 | const char *p; |
94ca3aab | 551 | file *f; |
552 | ||
d823001a | 553 | /* Don't bother trying for ld flags. */ |
554 | if (*object[0] == '-') | |
555 | continue; | |
556 | ||
557 | p = frob_extension (*object, ".rpo"); | |
558 | ||
94ca3aab | 559 | if (! file_exists (p)) |
560 | continue; | |
561 | ||
562 | f = file_hash_lookup (p); | |
563 | ||
564 | read_repo_file (f); | |
565 | } | |
566 | ||
567 | if (file_stack != NULL && ! recompile_files ()) | |
568 | return 0; | |
569 | ||
570 | return (symbol_stack != NULL); | |
571 | } | |
572 | ||
56e06438 | 573 | /* Add the demangled forms of any new symbols to the hash table. */ |
574 | ||
94ca3aab | 575 | static void |
60b8c5b3 | 576 | demangle_new_symbols (void) |
94ca3aab | 577 | { |
578 | symbol *sym; | |
579 | ||
580 | while ((sym = symbol_pop ()) != NULL) | |
581 | { | |
582 | demangled *dem; | |
1f3233d1 | 583 | const char *p = cplus_demangle (sym->key, DMGL_PARAMS | DMGL_ANSI); |
94ca3aab | 584 | |
585 | if (! p) | |
586 | continue; | |
587 | ||
588 | dem = demangled_hash_lookup (p, true); | |
1f3233d1 | 589 | dem->mangled = sym->key; |
94ca3aab | 590 | } |
591 | } | |
592 | ||
56e06438 | 593 | /* Step through the output of the linker, in the file named FNAME, and |
594 | adjust the settings for each symbol encountered. */ | |
595 | ||
94ca3aab | 596 | static int |
60b8c5b3 | 597 | scan_linker_output (const char *fname) |
94ca3aab | 598 | { |
599 | FILE *stream = fopen (fname, "r"); | |
600 | char *line; | |
601 | ||
602 | while ((line = tfgets (stream)) != NULL) | |
603 | { | |
604 | char *p = line, *q; | |
605 | symbol *sym; | |
606 | int end; | |
40570cc2 | 607 | |
513b1ebe | 608 | while (*p && ISSPACE ((unsigned char) *p)) |
94ca3aab | 609 | ++p; |
610 | ||
611 | if (! *p) | |
612 | continue; | |
613 | ||
513b1ebe | 614 | for (q = p; *q && ! ISSPACE ((unsigned char) *q); ++q) |
94ca3aab | 615 | ; |
616 | ||
617 | /* Try the first word on the line. */ | |
618 | if (*p == '.') | |
619 | ++p; | |
65e49ff1 | 620 | if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) |
621 | p += strlen (USER_LABEL_PREFIX); | |
94ca3aab | 622 | |
623 | end = ! *q; | |
624 | *q = 0; | |
625 | sym = symbol_hash_lookup (p, false); | |
626 | ||
7234ad38 | 627 | /* Some SVR4 linkers produce messages like |
628 | ld: 0711-317 ERROR: Undefined symbol: .g__t3foo1Zi | |
629 | */ | |
513b1ebe | 630 | if (! sym && ! end && strstr (q + 1, "Undefined symbol: ")) |
7234ad38 | 631 | { |
513b1ebe | 632 | char *p = strrchr (q + 1, ' '); |
7234ad38 | 633 | p++; |
634 | if (*p == '.') | |
635 | p++; | |
65e49ff1 | 636 | if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) |
637 | p += strlen (USER_LABEL_PREFIX); | |
7234ad38 | 638 | sym = symbol_hash_lookup (p, false); |
639 | } | |
640 | ||
94ca3aab | 641 | if (! sym && ! end) |
bd855dab | 642 | /* Try a mangled name in quotes. */ |
94ca3aab | 643 | { |
513b1ebe | 644 | const char *oldq = q + 1; |
94ca3aab | 645 | demangled *dem = 0; |
94ca3aab | 646 | q = 0; |
647 | ||
bd855dab | 648 | /* First try `GNU style'. */ |
78dbff7c | 649 | p = strchr (oldq, '`'); |
bd855dab | 650 | if (p) |
78dbff7c | 651 | p++, q = strchr (p, '\''); |
bd855dab | 652 | /* Then try "double quotes". */ |
78dbff7c | 653 | else if (p = strchr (oldq, '"'), p) |
654 | p++, q = strchr (p, '"'); | |
9511f117 | 655 | else { |
656 | /* Then try entire line. */ | |
657 | q = strchr (oldq, 0); | |
658 | if (q != oldq) | |
59fbfc4a | 659 | p = (char *)oldq; |
9511f117 | 660 | } |
94ca3aab | 661 | |
53bdb86c | 662 | if (p) |
0beb646c | 663 | { |
664 | /* Don't let the strstr's below see the demangled name; we | |
665 | might get spurious matches. */ | |
666 | p[-1] = '\0'; | |
667 | ||
668 | /* powerpc64-linux references .foo when calling function foo. */ | |
669 | if (*p == '.') | |
670 | p++; | |
671 | } | |
53bdb86c | 672 | |
b51e1cf8 | 673 | /* We need to check for certain error keywords here, or we would |
674 | mistakenly use GNU ld's "In function `foo':" message. */ | |
675 | if (q && (strstr (oldq, "ndefined") | |
13d09b16 | 676 | || strstr (oldq, "nresolved") |
036a9f3c | 677 | || strstr (oldq, "nsatisfied") |
b51e1cf8 | 678 | || strstr (oldq, "ultiple"))) |
94ca3aab | 679 | { |
bd855dab | 680 | *q = 0; |
681 | dem = demangled_hash_lookup (p, false); | |
682 | if (dem) | |
683 | sym = symbol_hash_lookup (dem->mangled, false); | |
684 | else | |
40570cc2 | 685 | { |
65e49ff1 | 686 | if (!strncmp (p, USER_LABEL_PREFIX, |
687 | strlen (USER_LABEL_PREFIX))) | |
688 | p += strlen (USER_LABEL_PREFIX); | |
01e2144f | 689 | sym = symbol_hash_lookup (p, false); |
690 | } | |
94ca3aab | 691 | } |
94ca3aab | 692 | } |
693 | ||
694 | if (sym && sym->tweaked) | |
30c1e454 | 695 | { |
caa6fdce | 696 | error ("`%s' was assigned to `%s', but was not defined " |
697 | "during recompilation, or vice versa", | |
698 | sym->key, sym->file->key); | |
30c1e454 | 699 | fclose (stream); |
700 | return 0; | |
701 | } | |
94ca3aab | 702 | if (sym && !sym->tweaking) |
703 | { | |
704 | if (tlink_verbose >= 2) | |
a4db0a1d | 705 | fprintf (stderr, _("collect: tweaking %s in %s\n"), |
1f3233d1 | 706 | sym->key, sym->file->key); |
94ca3aab | 707 | sym->tweaking = 1; |
708 | file_push (sym->file); | |
709 | } | |
40570cc2 | 710 | |
94ca3aab | 711 | obstack_free (&temporary_obstack, temporary_firstobj); |
712 | } | |
713 | ||
30c1e454 | 714 | fclose (stream); |
94ca3aab | 715 | return (file_stack != NULL); |
716 | } | |
717 | ||
56e06438 | 718 | /* Entry point for tlink. Called from main in collect2.c. |
719 | ||
720 | Iteratively try to provide definitions for all the unresolved symbols | |
721 | mentioned in the linker error messages. | |
722 | ||
723 | LD_ARGV is an array of arguments for the linker. | |
724 | OBJECT_LST is an array of object files that we may be able to recompile | |
725 | to provide missing definitions. Currently ignored. */ | |
726 | ||
94ca3aab | 727 | void |
60b8c5b3 | 728 | do_tlink (char **ld_argv, char **object_lst ATTRIBUTE_UNUSED) |
94ca3aab | 729 | { |
730 | int exit = tlink_execute ("ld", ld_argv, ldout); | |
731 | ||
732 | tlink_init (); | |
733 | ||
734 | if (exit) | |
735 | { | |
736 | int i = 0; | |
737 | ||
738 | /* Until collect does a better job of figuring out which are object | |
739 | files, assume that everything on the command line could be. */ | |
740 | if (read_repo_files (ld_argv)) | |
741 | while (exit && i++ < MAX_ITERATIONS) | |
742 | { | |
743 | if (tlink_verbose >= 3) | |
744 | dump_file (ldout); | |
745 | demangle_new_symbols (); | |
746 | if (! scan_linker_output (ldout)) | |
747 | break; | |
748 | if (! recompile_files ()) | |
749 | break; | |
750 | if (tlink_verbose) | |
a4db0a1d | 751 | fprintf (stderr, _("collect: relinking\n")); |
94ca3aab | 752 | exit = tlink_execute ("ld", ld_argv, ldout); |
753 | } | |
754 | } | |
755 | ||
756 | dump_file (ldout); | |
757 | unlink (ldout); | |
758 | if (exit) | |
759 | { | |
760 | error ("ld returned %d exit status", exit); | |
761 | collect_exit (exit); | |
762 | } | |
763 | } |