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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 | ||
57be4e89 | 4 | Copyright (C) 1995, 1998, 1999 Free Software Foundation, Inc. |
aa32d841 JL |
5 | Contributed by Jason Merrill (jason@cygnus.com). |
6 | ||
7 | This file is part of GNU CC. | |
8 | ||
9 | GNU CC is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
13 | ||
14 | GNU CC is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GNU CC; see the file COPYING. If not, write to | |
5f38fdda JL |
21 | the Free Software Foundation, 59 Temple Place - Suite 330, |
22 | Boston, MA 02111-1307, USA. */ | |
aa32d841 | 23 | |
aa32d841 | 24 | #include "config.h" |
670ee920 | 25 | #include "system.h" |
aa32d841 JL |
26 | #include "hash.h" |
27 | #include "demangle.h" | |
2edfd4ee | 28 | #include "collect2.h" |
aa32d841 JL |
29 | |
30 | #define MAX_ITERATIONS 17 | |
31 | ||
32 | /* Obstack allocation and deallocation routines. */ | |
33 | #define obstack_chunk_alloc xmalloc | |
34 | #define obstack_chunk_free free | |
35 | ||
aa32d841 JL |
36 | /* Defined in the automatically-generated underscore.c. */ |
37 | extern int prepends_underscore; | |
38 | ||
39 | static int tlink_verbose; | |
40 | \f | |
eb686064 JM |
41 | /* Hash table boilerplate for working with hash.[ch]. We have hash tables |
42 | for symbol names, file names, and demangled symbols. */ | |
aa32d841 JL |
43 | |
44 | typedef struct symbol_hash_entry | |
45 | { | |
46 | struct hash_entry root; | |
47 | struct file_hash_entry *file; | |
48 | int chosen; | |
49 | int tweaking; | |
50 | int tweaked; | |
51 | } symbol; | |
52 | ||
53 | typedef struct file_hash_entry | |
54 | { | |
55 | struct hash_entry root; | |
56 | const char *args; | |
57 | const char *dir; | |
58 | const char *main; | |
59 | int tweaking; | |
60 | } file; | |
61 | ||
62 | typedef struct demangled_hash_entry | |
63 | { | |
64 | struct hash_entry root; | |
65 | const char *mangled; | |
66 | } demangled; | |
67 | ||
68 | static struct hash_table symbol_table; | |
69 | ||
54ea1de9 KG |
70 | static struct hash_entry * symbol_hash_newfunc PARAMS ((struct hash_entry *, |
71 | struct hash_table *, | |
72 | hash_table_key)); | |
73 | static struct symbol_hash_entry * symbol_hash_lookup PARAMS ((const char *, | |
74 | boolean)); | |
75 | static struct hash_entry * file_hash_newfunc PARAMS ((struct hash_entry *, | |
76 | struct hash_table *, | |
77 | hash_table_key)); | |
78 | static struct file_hash_entry * file_hash_lookup PARAMS ((const char *)); | |
79 | static struct hash_entry * demangled_hash_newfunc PARAMS ((struct hash_entry *, | |
80 | struct hash_table *, | |
81 | hash_table_key)); | |
82 | static struct demangled_hash_entry * | |
83 | demangled_hash_lookup PARAMS ((const char *, boolean)); | |
84 | static void symbol_push PARAMS ((symbol *)); | |
85 | static symbol * symbol_pop PARAMS ((void)); | |
86 | static void file_push PARAMS ((file *)); | |
87 | static file * file_pop PARAMS ((void)); | |
88 | static void tlink_init PARAMS ((void)); | |
d4058195 KG |
89 | static int tlink_execute PARAMS ((const char *, char **, const char *)); |
90 | static char * frob_extension PARAMS ((const char *, const char *)); | |
54ea1de9 KG |
91 | static char * obstack_fgets PARAMS ((FILE *, struct obstack *)); |
92 | static char * tfgets PARAMS ((FILE *)); | |
93 | static char * pfgets PARAMS ((FILE *)); | |
94 | static void freadsym PARAMS ((FILE *, file *, int)); | |
95 | static void read_repo_file PARAMS ((file *)); | |
96 | static void maybe_tweak PARAMS ((char *, file *)); | |
97 | static int recompile_files PARAMS ((void)); | |
98 | static int read_repo_files PARAMS ((char **)); | |
99 | static void demangle_new_symbols PARAMS ((void)); | |
100 | static int scan_linker_output PARAMS ((const char *)); | |
101 | ||
eb686064 JM |
102 | /* Create a new entry for the symbol hash table. |
103 | Passed to hash_table_init. */ | |
104 | ||
aa32d841 JL |
105 | static struct hash_entry * |
106 | symbol_hash_newfunc (entry, table, string) | |
107 | struct hash_entry *entry; | |
108 | struct hash_table *table; | |
d4058195 | 109 | hash_table_key string ATTRIBUTE_UNUSED; |
aa32d841 JL |
110 | { |
111 | struct symbol_hash_entry *ret = (struct symbol_hash_entry *) entry; | |
112 | if (ret == NULL) | |
113 | { | |
114 | ret = ((struct symbol_hash_entry *) | |
115 | hash_allocate (table, sizeof (struct symbol_hash_entry))); | |
116 | if (ret == NULL) | |
117 | return NULL; | |
118 | } | |
aa32d841 JL |
119 | ret->file = NULL; |
120 | ret->chosen = 0; | |
121 | ret->tweaking = 0; | |
122 | ret->tweaked = 0; | |
123 | return (struct hash_entry *) ret; | |
124 | } | |
125 | ||
eb686064 JM |
126 | /* Look up an entry in the symbol hash table. */ |
127 | ||
aa32d841 JL |
128 | static struct symbol_hash_entry * |
129 | symbol_hash_lookup (string, create) | |
130 | const char *string; | |
131 | boolean create; | |
132 | { | |
133 | return ((struct symbol_hash_entry *) | |
d4058195 | 134 | hash_lookup (&symbol_table, (const hash_table_key) string, |
0c26b18a | 135 | create, string_copy)); |
aa32d841 JL |
136 | } |
137 | ||
138 | static struct hash_table file_table; | |
139 | ||
eb686064 JM |
140 | /* Create a new entry for the file hash table. |
141 | Passed to hash_table_init. */ | |
142 | ||
aa32d841 JL |
143 | static struct hash_entry * |
144 | file_hash_newfunc (entry, table, string) | |
145 | struct hash_entry *entry; | |
146 | struct hash_table *table; | |
d4058195 | 147 | hash_table_key string ATTRIBUTE_UNUSED; |
aa32d841 JL |
148 | { |
149 | struct file_hash_entry *ret = (struct file_hash_entry *) entry; | |
150 | if (ret == NULL) | |
151 | { | |
152 | ret = ((struct file_hash_entry *) | |
153 | hash_allocate (table, sizeof (struct file_hash_entry))); | |
154 | if (ret == NULL) | |
155 | return NULL; | |
156 | } | |
aa32d841 JL |
157 | ret->args = NULL; |
158 | ret->dir = NULL; | |
159 | ret->main = NULL; | |
160 | ret->tweaking = 0; | |
161 | return (struct hash_entry *) ret; | |
162 | } | |
163 | ||
eb686064 JM |
164 | /* Look up an entry in the file hash table. */ |
165 | ||
aa32d841 JL |
166 | static struct file_hash_entry * |
167 | file_hash_lookup (string) | |
168 | const char *string; | |
169 | { | |
170 | return ((struct file_hash_entry *) | |
d4058195 | 171 | hash_lookup (&file_table, (const hash_table_key) string, true, |
0c26b18a | 172 | string_copy)); |
aa32d841 JL |
173 | } |
174 | ||
175 | static struct hash_table demangled_table; | |
176 | ||
eb686064 JM |
177 | /* Create a new entry for the demangled name hash table. |
178 | Passed to hash_table_init. */ | |
179 | ||
aa32d841 JL |
180 | static struct hash_entry * |
181 | demangled_hash_newfunc (entry, table, string) | |
182 | struct hash_entry *entry; | |
183 | struct hash_table *table; | |
d4058195 | 184 | hash_table_key string ATTRIBUTE_UNUSED; |
aa32d841 JL |
185 | { |
186 | struct demangled_hash_entry *ret = (struct demangled_hash_entry *) entry; | |
187 | if (ret == NULL) | |
188 | { | |
189 | ret = ((struct demangled_hash_entry *) | |
190 | hash_allocate (table, sizeof (struct demangled_hash_entry))); | |
191 | if (ret == NULL) | |
192 | return NULL; | |
193 | } | |
aa32d841 JL |
194 | ret->mangled = NULL; |
195 | return (struct hash_entry *) ret; | |
196 | } | |
197 | ||
eb686064 JM |
198 | /* Look up an entry in the demangled name hash table. */ |
199 | ||
aa32d841 JL |
200 | static struct demangled_hash_entry * |
201 | demangled_hash_lookup (string, create) | |
202 | const char *string; | |
203 | boolean create; | |
204 | { | |
205 | return ((struct demangled_hash_entry *) | |
d4058195 | 206 | hash_lookup (&demangled_table, (const hash_table_key) string, |
0c26b18a | 207 | create, string_copy)); |
aa32d841 JL |
208 | } |
209 | \f | |
210 | /* Stack code. */ | |
211 | ||
212 | struct symbol_stack_entry | |
213 | { | |
214 | symbol *value; | |
215 | struct symbol_stack_entry *next; | |
216 | }; | |
217 | struct obstack symbol_stack_obstack; | |
218 | struct symbol_stack_entry *symbol_stack; | |
219 | ||
220 | struct file_stack_entry | |
221 | { | |
222 | file *value; | |
223 | struct file_stack_entry *next; | |
224 | }; | |
225 | struct obstack file_stack_obstack; | |
226 | struct file_stack_entry *file_stack; | |
227 | ||
228 | static void | |
229 | symbol_push (p) | |
230 | symbol *p; | |
231 | { | |
232 | struct symbol_stack_entry *ep = (struct symbol_stack_entry *) obstack_alloc | |
233 | (&symbol_stack_obstack, sizeof (struct symbol_stack_entry)); | |
234 | ep->value = p; | |
235 | ep->next = symbol_stack; | |
236 | symbol_stack = ep; | |
237 | } | |
238 | ||
239 | static symbol * | |
240 | symbol_pop () | |
241 | { | |
242 | struct symbol_stack_entry *ep = symbol_stack; | |
243 | symbol *p; | |
244 | if (ep == NULL) | |
245 | return NULL; | |
246 | p = ep->value; | |
247 | symbol_stack = ep->next; | |
248 | obstack_free (&symbol_stack_obstack, ep); | |
249 | return p; | |
250 | } | |
251 | ||
252 | static void | |
253 | file_push (p) | |
254 | file *p; | |
255 | { | |
256 | struct file_stack_entry *ep; | |
257 | ||
258 | if (p->tweaking) | |
259 | return; | |
260 | ||
261 | ep = (struct file_stack_entry *) obstack_alloc | |
262 | (&file_stack_obstack, sizeof (struct file_stack_entry)); | |
263 | ep->value = p; | |
264 | ep->next = file_stack; | |
265 | file_stack = ep; | |
266 | p->tweaking = 1; | |
267 | } | |
268 | ||
269 | static file * | |
270 | file_pop () | |
271 | { | |
272 | struct file_stack_entry *ep = file_stack; | |
273 | file *p; | |
274 | if (ep == NULL) | |
275 | return NULL; | |
276 | p = ep->value; | |
277 | file_stack = ep->next; | |
278 | obstack_free (&file_stack_obstack, ep); | |
279 | p->tweaking = 0; | |
280 | return p; | |
281 | } | |
282 | \f | |
283 | /* Other machinery. */ | |
284 | ||
eb686064 JM |
285 | /* Initialize the tlink machinery. Called from do_tlink. */ |
286 | ||
aa32d841 JL |
287 | static void |
288 | tlink_init () | |
289 | { | |
d4058195 | 290 | const char *p; |
aa32d841 | 291 | |
0c26b18a PDM |
292 | hash_table_init (&symbol_table, symbol_hash_newfunc, string_hash, |
293 | string_compare); | |
294 | hash_table_init (&file_table, file_hash_newfunc, string_hash, | |
295 | string_compare); | |
a87ec9e6 | 296 | hash_table_init (&demangled_table, demangled_hash_newfunc, |
0c26b18a | 297 | string_hash, string_compare); |
aa32d841 JL |
298 | obstack_begin (&symbol_stack_obstack, 0); |
299 | obstack_begin (&file_stack_obstack, 0); | |
300 | ||
301 | p = getenv ("TLINK_VERBOSE"); | |
302 | if (p) | |
303 | tlink_verbose = atoi (p); | |
304 | else | |
305 | { | |
306 | tlink_verbose = 1; | |
307 | if (vflag) | |
308 | tlink_verbose = 2; | |
309 | if (debug) | |
310 | tlink_verbose = 3; | |
311 | } | |
312 | } | |
313 | ||
314 | static int | |
315 | tlink_execute (prog, argv, redir) | |
d4058195 | 316 | const char *prog; |
aa32d841 | 317 | char **argv; |
d4058195 | 318 | const char *redir; |
aa32d841 JL |
319 | { |
320 | collect_execute (prog, argv, redir); | |
321 | return collect_wait (prog); | |
322 | } | |
323 | ||
324 | static char * | |
325 | frob_extension (s, ext) | |
d4058195 | 326 | const char *s; |
54ea1de9 | 327 | const char *ext; |
aa32d841 | 328 | { |
d4058195 | 329 | const char *p = rindex (s, '/'); |
aa32d841 JL |
330 | if (! p) |
331 | p = s; | |
670ee920 | 332 | p = rindex (p, '.'); |
aa32d841 JL |
333 | if (! p) |
334 | p = s + strlen (s); | |
335 | ||
336 | obstack_grow (&temporary_obstack, s, p - s); | |
337 | return obstack_copy0 (&temporary_obstack, ext, strlen (ext)); | |
338 | } | |
339 | ||
340 | static char * | |
341 | obstack_fgets (stream, ob) | |
342 | FILE *stream; | |
343 | struct obstack *ob; | |
344 | { | |
345 | int c; | |
346 | while ((c = getc (stream)) != EOF && c != '\n') | |
347 | obstack_1grow (ob, c); | |
348 | if (obstack_object_size (ob) == 0) | |
349 | return NULL; | |
350 | obstack_1grow (ob, '\0'); | |
351 | return obstack_finish (ob); | |
352 | } | |
353 | ||
354 | static char * | |
355 | tfgets (stream) | |
356 | FILE *stream; | |
357 | { | |
358 | return obstack_fgets (stream, &temporary_obstack); | |
359 | } | |
360 | ||
361 | static char * | |
362 | pfgets (stream) | |
363 | FILE *stream; | |
364 | { | |
365 | return obstack_fgets (stream, &permanent_obstack); | |
366 | } | |
367 | \f | |
368 | /* Real tlink code. */ | |
369 | ||
eb686064 JM |
370 | /* Subroutine of read_repo_file. We are reading the repo file for file F, |
371 | which is coming in on STREAM, and the symbol that comes next in STREAM | |
372 | is offerred, chosen or provided if CHOSEN is 0, 1 or 2, respectively. | |
373 | ||
374 | XXX "provided" is unimplemented, both here and in the compiler. */ | |
375 | ||
aa32d841 JL |
376 | static void |
377 | freadsym (stream, f, chosen) | |
378 | FILE *stream; | |
379 | file *f; | |
380 | int chosen; | |
381 | { | |
382 | symbol *sym; | |
383 | ||
384 | { | |
d4058195 | 385 | const char *name = tfgets (stream); |
aa32d841 JL |
386 | sym = symbol_hash_lookup (name, true); |
387 | } | |
388 | ||
389 | if (sym->file == NULL) | |
390 | { | |
eb686064 JM |
391 | /* We didn't have this symbol already, so we choose this file. */ |
392 | ||
aa32d841 JL |
393 | symbol_push (sym); |
394 | sym->file = f; | |
395 | sym->chosen = chosen; | |
396 | } | |
397 | else if (chosen) | |
398 | { | |
eb686064 JM |
399 | /* We want this file; cast aside any pretender. */ |
400 | ||
aa32d841 JL |
401 | if (sym->chosen && sym->file != f) |
402 | { | |
403 | if (sym->chosen == 1) | |
404 | file_push (sym->file); | |
405 | else | |
406 | { | |
407 | file_push (f); | |
408 | f = sym->file; | |
409 | chosen = sym->chosen; | |
410 | } | |
411 | } | |
412 | sym->file = f; | |
413 | sym->chosen = chosen; | |
414 | } | |
415 | } | |
416 | ||
eb686064 JM |
417 | /* Read in the repo file denoted by F, and record all its information. */ |
418 | ||
aa32d841 JL |
419 | static void |
420 | read_repo_file (f) | |
421 | file *f; | |
422 | { | |
423 | char c; | |
a87ec9e6 | 424 | FILE *stream = fopen ((char*) f->root.key, "r"); |
aa32d841 JL |
425 | |
426 | if (tlink_verbose >= 2) | |
5e4adfba | 427 | fprintf (stderr, _("collect: reading %s\n"), |
a87ec9e6 | 428 | (char*) f->root.key); |
aa32d841 JL |
429 | |
430 | while (fscanf (stream, "%c ", &c) == 1) | |
431 | { | |
432 | switch (c) | |
433 | { | |
434 | case 'A': | |
435 | f->args = pfgets (stream); | |
436 | break; | |
437 | case 'D': | |
438 | f->dir = pfgets (stream); | |
439 | break; | |
440 | case 'M': | |
441 | f->main = pfgets (stream); | |
442 | break; | |
443 | case 'P': | |
444 | freadsym (stream, f, 2); | |
445 | break; | |
446 | case 'C': | |
447 | freadsym (stream, f, 1); | |
448 | break; | |
449 | case 'O': | |
450 | freadsym (stream, f, 0); | |
451 | break; | |
452 | } | |
453 | obstack_free (&temporary_obstack, temporary_firstobj); | |
454 | } | |
455 | fclose (stream); | |
456 | if (f->args == NULL) | |
457 | f->args = getenv ("COLLECT_GCC_OPTIONS"); | |
458 | if (f->dir == NULL) | |
459 | f->dir = "."; | |
460 | } | |
461 | ||
eb686064 JM |
462 | /* We might want to modify LINE, which is a symbol line from file F. We do |
463 | this if either we saw an error message referring to the symbol in | |
464 | question, or we have already allocated the symbol to another file and | |
465 | this one wants to emit it as well. */ | |
466 | ||
aa32d841 JL |
467 | static void |
468 | maybe_tweak (line, f) | |
469 | char *line; | |
470 | file *f; | |
471 | { | |
472 | symbol *sym = symbol_hash_lookup (line + 2, false); | |
473 | ||
474 | if ((sym->file == f && sym->tweaking) | |
475 | || (sym->file != f && line[0] == 'C')) | |
476 | { | |
477 | sym->tweaking = 0; | |
478 | sym->tweaked = 1; | |
479 | ||
480 | if (line[0] == 'O') | |
481 | line[0] = 'C'; | |
482 | else | |
483 | line[0] = 'O'; | |
484 | } | |
485 | } | |
486 | ||
eb686064 JM |
487 | /* Update the repo files for each of the object files we have adjusted and |
488 | recompile. | |
489 | ||
490 | XXX Should this use collect_execute instead of system? */ | |
491 | ||
aa32d841 JL |
492 | static int |
493 | recompile_files () | |
494 | { | |
495 | file *f; | |
496 | ||
497 | while ((f = file_pop ()) != NULL) | |
498 | { | |
499 | char *line, *command; | |
a87ec9e6 | 500 | FILE *stream = fopen ((char*) f->root.key, "r"); |
d4058195 | 501 | const char *outname = frob_extension ((char*) f->root.key, ".rnw"); |
aa32d841 JL |
502 | FILE *output = fopen (outname, "w"); |
503 | ||
504 | while ((line = tfgets (stream)) != NULL) | |
505 | { | |
506 | switch (line[0]) | |
507 | { | |
508 | case 'C': | |
509 | case 'O': | |
510 | maybe_tweak (line, f); | |
511 | } | |
512 | fprintf (output, "%s\n", line); | |
513 | } | |
514 | fclose (stream); | |
515 | fclose (output); | |
a87ec9e6 | 516 | rename (outname, (char*) f->root.key); |
aa32d841 JL |
517 | |
518 | obstack_grow (&temporary_obstack, "cd ", 3); | |
519 | obstack_grow (&temporary_obstack, f->dir, strlen (f->dir)); | |
520 | obstack_grow (&temporary_obstack, "; ", 2); | |
521 | obstack_grow (&temporary_obstack, c_file_name, strlen (c_file_name)); | |
522 | obstack_1grow (&temporary_obstack, ' '); | |
523 | obstack_grow (&temporary_obstack, f->args, strlen (f->args)); | |
524 | obstack_1grow (&temporary_obstack, ' '); | |
525 | command = obstack_copy0 (&temporary_obstack, f->main, strlen (f->main)); | |
526 | ||
527 | if (tlink_verbose) | |
5e4adfba | 528 | fprintf (stderr, _("collect: recompiling %s\n"), f->main); |
aa32d841 JL |
529 | if (tlink_verbose >= 3) |
530 | fprintf (stderr, "%s\n", command); | |
531 | ||
532 | if (system (command) != 0) | |
533 | return 0; | |
534 | ||
535 | read_repo_file (f); | |
536 | ||
537 | obstack_free (&temporary_obstack, temporary_firstobj); | |
538 | } | |
539 | return 1; | |
540 | } | |
541 | ||
eb686064 JM |
542 | /* The first phase of processing: determine which object files have |
543 | .rpo files associated with them, and read in the information. */ | |
544 | ||
aa32d841 JL |
545 | static int |
546 | read_repo_files (object_lst) | |
547 | char **object_lst; | |
548 | { | |
549 | char **object = object_lst; | |
550 | ||
551 | for (; *object; object++) | |
552 | { | |
2c561874 | 553 | const char *p; |
aa32d841 JL |
554 | file *f; |
555 | ||
2c561874 JM |
556 | /* Don't bother trying for ld flags. */ |
557 | if (*object[0] == '-') | |
558 | continue; | |
559 | ||
560 | p = frob_extension (*object, ".rpo"); | |
561 | ||
aa32d841 JL |
562 | if (! file_exists (p)) |
563 | continue; | |
564 | ||
565 | f = file_hash_lookup (p); | |
566 | ||
567 | read_repo_file (f); | |
568 | } | |
569 | ||
570 | if (file_stack != NULL && ! recompile_files ()) | |
571 | return 0; | |
572 | ||
573 | return (symbol_stack != NULL); | |
574 | } | |
575 | ||
eb686064 JM |
576 | /* Add the demangled forms of any new symbols to the hash table. */ |
577 | ||
aa32d841 JL |
578 | static void |
579 | demangle_new_symbols () | |
580 | { | |
581 | symbol *sym; | |
582 | ||
583 | while ((sym = symbol_pop ()) != NULL) | |
584 | { | |
585 | demangled *dem; | |
d4058195 | 586 | const char *p = cplus_demangle ((char*) sym->root.key, |
a87ec9e6 | 587 | DMGL_PARAMS | DMGL_ANSI); |
aa32d841 JL |
588 | |
589 | if (! p) | |
590 | continue; | |
591 | ||
592 | dem = demangled_hash_lookup (p, true); | |
a87ec9e6 | 593 | dem->mangled = (char*) sym->root.key; |
aa32d841 JL |
594 | } |
595 | } | |
596 | ||
eb686064 JM |
597 | /* Step through the output of the linker, in the file named FNAME, and |
598 | adjust the settings for each symbol encountered. */ | |
599 | ||
aa32d841 JL |
600 | static int |
601 | scan_linker_output (fname) | |
54ea1de9 | 602 | const char *fname; |
aa32d841 JL |
603 | { |
604 | FILE *stream = fopen (fname, "r"); | |
605 | char *line; | |
606 | ||
607 | while ((line = tfgets (stream)) != NULL) | |
608 | { | |
609 | char *p = line, *q; | |
610 | symbol *sym; | |
611 | int end; | |
612 | ||
79c9824e | 613 | while (*p && ISSPACE ((unsigned char)*p)) |
aa32d841 JL |
614 | ++p; |
615 | ||
616 | if (! *p) | |
617 | continue; | |
618 | ||
79c9824e | 619 | for (q = p; *q && ! ISSPACE ((unsigned char)*q); ++q) |
aa32d841 JL |
620 | ; |
621 | ||
622 | /* Try the first word on the line. */ | |
623 | if (*p == '.') | |
624 | ++p; | |
625 | if (*p == '_' && prepends_underscore) | |
626 | ++p; | |
627 | ||
628 | end = ! *q; | |
629 | *q = 0; | |
630 | sym = symbol_hash_lookup (p, false); | |
631 | ||
632 | if (! sym && ! end) | |
b4558b57 | 633 | /* Try a mangled name in quotes. */ |
aa32d841 | 634 | { |
d4058195 | 635 | const char *oldq = q+1; |
aa32d841 | 636 | demangled *dem = 0; |
aa32d841 JL |
637 | q = 0; |
638 | ||
b4558b57 JM |
639 | /* First try `GNU style'. */ |
640 | p = index (oldq, '`'); | |
641 | if (p) | |
642 | p++, q = index (p, '\''); | |
643 | /* Then try "double quotes". */ | |
644 | else if (p = index (oldq, '"'), p) | |
645 | p++, q = index (p, '"'); | |
aa32d841 | 646 | |
6ff7fb95 JM |
647 | /* Don't let the strstr's below see the demangled name; we |
648 | might get spurious matches. */ | |
649 | if (p) | |
650 | p[-1] = '\0'; | |
651 | ||
57be4e89 JM |
652 | /* We need to check for certain error keywords here, or we would |
653 | mistakenly use GNU ld's "In function `foo':" message. */ | |
654 | if (q && (strstr (oldq, "ndefined") | |
3f94eee6 | 655 | || strstr (oldq, "nresolved") |
57be4e89 | 656 | || strstr (oldq, "ultiple"))) |
aa32d841 | 657 | { |
b4558b57 JM |
658 | *q = 0; |
659 | dem = demangled_hash_lookup (p, false); | |
660 | if (dem) | |
661 | sym = symbol_hash_lookup (dem->mangled, false); | |
662 | else | |
9c5b50b3 JM |
663 | { |
664 | if (*p == '_' && prepends_underscore) | |
665 | ++p; | |
666 | sym = symbol_hash_lookup (p, false); | |
667 | } | |
aa32d841 | 668 | } |
aa32d841 JL |
669 | } |
670 | ||
671 | if (sym && sym->tweaked) | |
7b6ffd11 KI |
672 | { |
673 | fclose (stream); | |
674 | return 0; | |
675 | } | |
aa32d841 JL |
676 | if (sym && !sym->tweaking) |
677 | { | |
678 | if (tlink_verbose >= 2) | |
5e4adfba | 679 | fprintf (stderr, _("collect: tweaking %s in %s\n"), |
a87ec9e6 | 680 | (char*) sym->root.key, (char*) sym->file->root.key); |
aa32d841 JL |
681 | sym->tweaking = 1; |
682 | file_push (sym->file); | |
683 | } | |
684 | ||
685 | obstack_free (&temporary_obstack, temporary_firstobj); | |
686 | } | |
687 | ||
7b6ffd11 | 688 | fclose (stream); |
aa32d841 JL |
689 | return (file_stack != NULL); |
690 | } | |
691 | ||
eb686064 JM |
692 | /* Entry point for tlink. Called from main in collect2.c. |
693 | ||
694 | Iteratively try to provide definitions for all the unresolved symbols | |
695 | mentioned in the linker error messages. | |
696 | ||
697 | LD_ARGV is an array of arguments for the linker. | |
698 | OBJECT_LST is an array of object files that we may be able to recompile | |
699 | to provide missing definitions. Currently ignored. */ | |
700 | ||
aa32d841 JL |
701 | void |
702 | do_tlink (ld_argv, object_lst) | |
d4058195 | 703 | char **ld_argv, **object_lst ATTRIBUTE_UNUSED; |
aa32d841 JL |
704 | { |
705 | int exit = tlink_execute ("ld", ld_argv, ldout); | |
706 | ||
707 | tlink_init (); | |
708 | ||
709 | if (exit) | |
710 | { | |
711 | int i = 0; | |
712 | ||
713 | /* Until collect does a better job of figuring out which are object | |
714 | files, assume that everything on the command line could be. */ | |
715 | if (read_repo_files (ld_argv)) | |
716 | while (exit && i++ < MAX_ITERATIONS) | |
717 | { | |
718 | if (tlink_verbose >= 3) | |
719 | dump_file (ldout); | |
720 | demangle_new_symbols (); | |
721 | if (! scan_linker_output (ldout)) | |
722 | break; | |
723 | if (! recompile_files ()) | |
724 | break; | |
725 | if (tlink_verbose) | |
5e4adfba | 726 | fprintf (stderr, _("collect: relinking\n")); |
aa32d841 JL |
727 | exit = tlink_execute ("ld", ld_argv, ldout); |
728 | } | |
729 | } | |
730 | ||
731 | dump_file (ldout); | |
732 | unlink (ldout); | |
733 | if (exit) | |
734 | { | |
735 | error ("ld returned %d exit status", exit); | |
736 | collect_exit (exit); | |
737 | } | |
738 | } |