Commit | Line | Data |
---|---|---|
a9998805 | 1 | /* Linker file opening and searching. |
5e2f1575 | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001, 2002, |
aef6203b | 3 | 2003, 2004, 2005 Free Software Foundation, Inc. |
252b5132 | 4 | |
3fe38064 | 5 | This file is part of GLD, the Gnu Linker. |
252b5132 | 6 | |
3fe38064 NC |
7 | GLD is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
252b5132 | 11 | |
3fe38064 NC |
12 | GLD is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
3fe38064 NC |
17 | You should have received a copy of the GNU General Public License |
18 | along with GLD; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
252b5132 | 21 | |
1c64c4ed | 22 | /* ldfile.c: look after all the file stuff. */ |
252b5132 RH |
23 | |
24 | #include "bfd.h" | |
25 | #include "sysdep.h" | |
26 | #include "bfdlink.h" | |
3882b010 | 27 | #include "safe-ctype.h" |
252b5132 RH |
28 | #include "ld.h" |
29 | #include "ldmisc.h" | |
30 | #include "ldexp.h" | |
31 | #include "ldlang.h" | |
32 | #include "ldfile.h" | |
33 | #include "ldmain.h" | |
df2a7313 | 34 | #include <ldgram.h> |
252b5132 RH |
35 | #include "ldlex.h" |
36 | #include "ldemul.h" | |
d1b2b2dc | 37 | #include "libiberty.h" |
3fe38064 | 38 | #include "filenames.h" |
252b5132 | 39 | |
3fe38064 NC |
40 | const char * ldfile_input_filename; |
41 | bfd_boolean ldfile_assumed_script = FALSE; | |
42 | const char * ldfile_output_machine_name = ""; | |
252b5132 RH |
43 | unsigned long ldfile_output_machine; |
44 | enum bfd_architecture ldfile_output_architecture; | |
3fe38064 | 45 | search_dirs_type * search_head; |
252b5132 | 46 | |
252b5132 | 47 | #ifdef VMS |
3fe38064 | 48 | char * slash = ""; |
252b5132 RH |
49 | #else |
50 | #if defined (_WIN32) && ! defined (__CYGWIN32__) | |
3fe38064 | 51 | char * slash = "\\"; |
252b5132 | 52 | #else |
3fe38064 | 53 | char * slash = "/"; |
252b5132 RH |
54 | #endif |
55 | #endif | |
252b5132 | 56 | |
3fe38064 NC |
57 | typedef struct search_arch |
58 | { | |
4de2d33d | 59 | char *name; |
252b5132 RH |
60 | struct search_arch *next; |
61 | } search_arch_type; | |
62 | ||
3fe38064 | 63 | static search_dirs_type **search_tail_ptr = &search_head; |
252b5132 RH |
64 | static search_arch_type *search_arch_head; |
65 | static search_arch_type **search_arch_tail_ptr = &search_arch_head; | |
4de2d33d | 66 | |
3fe38064 NC |
67 | /* Test whether a pathname, after canonicalization, is the same or a |
68 | sub-directory of the sysroot directory. */ | |
69 | ||
70 | static bfd_boolean | |
1579bae1 | 71 | is_sysrooted_pathname (const char *name, bfd_boolean notsame) |
3fe38064 NC |
72 | { |
73 | char * realname = ld_canon_sysroot ? lrealpath (name) : NULL; | |
74 | int len; | |
75 | bfd_boolean result; | |
76 | ||
77 | if (! realname) | |
78 | return FALSE; | |
5e2f1575 | 79 | |
3fe38064 NC |
80 | len = strlen (realname); |
81 | ||
82 | if (((! notsame && len == ld_canon_sysroot_len) | |
83 | || (len >= ld_canon_sysroot_len | |
84 | && IS_DIR_SEPARATOR (realname[ld_canon_sysroot_len]) | |
85 | && (realname[ld_canon_sysroot_len] = '\0') == '\0')) | |
86 | && FILENAME_CMP (ld_canon_sysroot, realname) == 0) | |
87 | result = TRUE; | |
88 | else | |
89 | result = FALSE; | |
90 | ||
91 | if (realname) | |
92 | free (realname); | |
93 | ||
94 | return result; | |
95 | } | |
252b5132 | 96 | |
5ed6aba4 NC |
97 | /* Adds NAME to the library search path. |
98 | Makes a copy of NAME using xmalloc(). */ | |
99 | ||
252b5132 | 100 | void |
1579bae1 | 101 | ldfile_add_library_path (const char *name, bfd_boolean cmdline) |
252b5132 RH |
102 | { |
103 | search_dirs_type *new; | |
104 | ||
361b220e CD |
105 | if (!cmdline && config.only_cmd_line_lib_dirs) |
106 | return; | |
107 | ||
1579bae1 | 108 | new = xmalloc (sizeof (search_dirs_type)); |
252b5132 | 109 | new->next = NULL; |
252b5132 RH |
110 | new->cmdline = cmdline; |
111 | *search_tail_ptr = new; | |
112 | search_tail_ptr = &new->next; | |
9c8ebd6a DJ |
113 | |
114 | /* If a directory is marked as honoring sysroot, prepend the sysroot path | |
115 | now. */ | |
5ed6aba4 | 116 | if (name[0] == '=') |
e3f2db7f | 117 | { |
5ed6aba4 | 118 | new->name = concat (ld_sysroot, name + 1, NULL); |
e3f2db7f AO |
119 | new->sysrooted = TRUE; |
120 | } | |
121 | else | |
5ed6aba4 NC |
122 | { |
123 | new->name = xstrdup (name); | |
124 | new->sysrooted = is_sysrooted_pathname (name, FALSE); | |
125 | } | |
252b5132 RH |
126 | } |
127 | ||
128 | /* Try to open a BFD for a lang_input_statement. */ | |
129 | ||
b34976b6 | 130 | bfd_boolean |
1579bae1 AM |
131 | ldfile_try_open_bfd (const char *attempt, |
132 | lang_input_statement_type *entry) | |
252b5132 RH |
133 | { |
134 | entry->the_bfd = bfd_openr (attempt, entry->target); | |
135 | ||
136 | if (trace_file_tries) | |
137 | { | |
138 | if (entry->the_bfd == NULL) | |
139 | info_msg (_("attempt to open %s failed\n"), attempt); | |
140 | else | |
141 | info_msg (_("attempt to open %s succeeded\n"), attempt); | |
142 | } | |
143 | ||
b90d1146 | 144 | if (entry->the_bfd == NULL) |
252b5132 RH |
145 | { |
146 | if (bfd_get_error () == bfd_error_invalid_target) | |
147 | einfo (_("%F%P: invalid BFD target `%s'\n"), entry->target); | |
b34976b6 | 148 | return FALSE; |
252b5132 | 149 | } |
b90d1146 ILT |
150 | |
151 | /* If we are searching for this file, see if the architecture is | |
152 | compatible with the output file. If it isn't, keep searching. | |
153 | If we can't open the file as an object file, stop the search | |
6c0c5b1e AM |
154 | here. If we are statically linking, ensure that we don't link |
155 | a dynamic object. */ | |
b90d1146 | 156 | |
6c0c5b1e | 157 | if (entry->search_dirs_flag || !entry->dynamic) |
b90d1146 ILT |
158 | { |
159 | bfd *check; | |
160 | ||
161 | if (bfd_check_format (entry->the_bfd, bfd_archive)) | |
162 | check = bfd_openr_next_archived_file (entry->the_bfd, NULL); | |
163 | else | |
164 | check = entry->the_bfd; | |
165 | ||
a9998805 | 166 | if (check != NULL) |
b90d1146 | 167 | { |
a9998805 | 168 | if (! bfd_check_format (check, bfd_object)) |
599917b8 JJ |
169 | { |
170 | if (check == entry->the_bfd | |
6c0c5b1e | 171 | && entry->search_dirs_flag |
599917b8 JJ |
172 | && bfd_get_error () == bfd_error_file_not_recognized |
173 | && ! ldemul_unrecognized_file (entry)) | |
174 | { | |
175 | int token, skip = 0; | |
176 | char *arg, *arg1, *arg2, *arg3; | |
177 | extern FILE *yyin; | |
178 | ||
179 | /* Try to interpret the file as a linker script. */ | |
180 | ldfile_open_command_file (attempt); | |
b34976b6 AM |
181 | |
182 | ldfile_assumed_script = TRUE; | |
599917b8 JJ |
183 | parser_input = input_selected; |
184 | ldlex_both (); | |
185 | token = INPUT_SCRIPT; | |
186 | while (token != 0) | |
187 | { | |
188 | switch (token) | |
189 | { | |
190 | case OUTPUT_FORMAT: | |
191 | if ((token = yylex ()) != '(') | |
192 | continue; | |
193 | if ((token = yylex ()) != NAME) | |
194 | continue; | |
195 | arg1 = yylval.name; | |
196 | arg2 = NULL; | |
197 | arg3 = NULL; | |
198 | token = yylex (); | |
199 | if (token == ',') | |
200 | { | |
201 | if ((token = yylex ()) != NAME) | |
202 | { | |
203 | free (arg1); | |
204 | continue; | |
205 | } | |
206 | arg2 = yylval.name; | |
207 | if ((token = yylex ()) != ',' | |
208 | || (token = yylex ()) != NAME) | |
209 | { | |
210 | free (arg1); | |
211 | free (arg2); | |
212 | continue; | |
213 | } | |
214 | arg3 = yylval.name; | |
215 | token = yylex (); | |
216 | } | |
217 | if (token == ')') | |
218 | { | |
219 | switch (command_line.endian) | |
220 | { | |
221 | default: | |
222 | case ENDIAN_UNSET: | |
223 | arg = arg1; break; | |
224 | case ENDIAN_BIG: | |
225 | arg = arg2 ? arg2 : arg1; break; | |
226 | case ENDIAN_LITTLE: | |
227 | arg = arg3 ? arg3 : arg1; break; | |
228 | } | |
229 | if (strcmp (arg, lang_get_output_target ()) != 0) | |
230 | skip = 1; | |
231 | } | |
232 | free (arg1); | |
233 | if (arg2) free (arg2); | |
234 | if (arg3) free (arg3); | |
235 | break; | |
236 | case NAME: | |
237 | case LNAME: | |
238 | case VERS_IDENTIFIER: | |
239 | case VERS_TAG: | |
240 | free (yylval.name); | |
241 | break; | |
242 | case INT: | |
243 | if (yylval.bigint.str) | |
244 | free (yylval.bigint.str); | |
245 | break; | |
5e2f1575 | 246 | } |
599917b8 JJ |
247 | token = yylex (); |
248 | } | |
4f39e302 | 249 | ldlex_popstate (); |
b34976b6 | 250 | ldfile_assumed_script = FALSE; |
599917b8 JJ |
251 | fclose (yyin); |
252 | yyin = NULL; | |
253 | if (skip) | |
254 | { | |
255 | einfo (_("%P: skipping incompatible %s when searching for %s\n"), | |
256 | attempt, entry->local_sym_name); | |
257 | bfd_close (entry->the_bfd); | |
258 | entry->the_bfd = NULL; | |
b34976b6 | 259 | return FALSE; |
599917b8 JJ |
260 | } |
261 | } | |
b34976b6 | 262 | return TRUE; |
599917b8 | 263 | } |
f1f0d9ab | 264 | |
6c0c5b1e AM |
265 | if (!entry->dynamic && (entry->the_bfd->flags & DYNAMIC) != 0) |
266 | { | |
267 | einfo (_("%F%P: attempted static link of dynamic object `%s'\n"), | |
268 | attempt); | |
269 | bfd_close (entry->the_bfd); | |
270 | entry->the_bfd = NULL; | |
271 | return FALSE; | |
272 | } | |
273 | ||
274 | if (entry->search_dirs_flag | |
275 | && !bfd_arch_get_compatible (check, output_bfd, | |
276 | command_line.accept_unknown_input_arch) | |
312b768e | 277 | /* XCOFF archives can have 32 and 64 bit objects. */ |
f1f0d9ab | 278 | && ! (bfd_get_flavour (check) == bfd_target_xcoff_flavour |
71daf8b4 | 279 | && bfd_get_flavour (output_bfd) == bfd_target_xcoff_flavour |
f1f0d9ab | 280 | && bfd_check_format (entry->the_bfd, bfd_archive))) |
a9998805 | 281 | { |
1c64c4ed | 282 | einfo (_("%P: skipping incompatible %s when searching for %s\n"), |
a9998805 ILT |
283 | attempt, entry->local_sym_name); |
284 | bfd_close (entry->the_bfd); | |
285 | entry->the_bfd = NULL; | |
b34976b6 | 286 | return FALSE; |
a9998805 | 287 | } |
b90d1146 ILT |
288 | } |
289 | } | |
290 | ||
b34976b6 | 291 | return TRUE; |
252b5132 RH |
292 | } |
293 | ||
294 | /* Search for and open the file specified by ENTRY. If it is an | |
295 | archive, use ARCH, LIB and SUFFIX to modify the file name. */ | |
296 | ||
b34976b6 | 297 | bfd_boolean |
1579bae1 AM |
298 | ldfile_open_file_search (const char *arch, |
299 | lang_input_statement_type *entry, | |
300 | const char *lib, | |
301 | const char *suffix) | |
252b5132 RH |
302 | { |
303 | search_dirs_type *search; | |
304 | ||
305 | /* If this is not an archive, try to open it in the current | |
306 | directory first. */ | |
307 | if (! entry->is_archive) | |
308 | { | |
3fe38064 | 309 | if (entry->sysrooted && IS_ABSOLUTE_PATH (entry->filename)) |
e3f2db7f AO |
310 | { |
311 | char *name = concat (ld_sysroot, entry->filename, | |
312 | (const char *) NULL); | |
313 | if (ldfile_try_open_bfd (name, entry)) | |
314 | { | |
315 | entry->filename = name; | |
316 | return TRUE; | |
317 | } | |
318 | free (name); | |
319 | } | |
320 | else if (ldfile_try_open_bfd (entry->filename, entry)) | |
321 | { | |
3fe38064 NC |
322 | entry->sysrooted = IS_ABSOLUTE_PATH (entry->filename) |
323 | && is_sysrooted_pathname (entry->filename, TRUE); | |
e3f2db7f AO |
324 | return TRUE; |
325 | } | |
3fe38064 NC |
326 | |
327 | if (IS_ABSOLUTE_PATH (entry->filename)) | |
328 | return FALSE; | |
252b5132 RH |
329 | } |
330 | ||
1579bae1 | 331 | for (search = search_head; search != NULL; search = search->next) |
252b5132 RH |
332 | { |
333 | char *string; | |
334 | ||
1049f94e | 335 | if (entry->dynamic && ! link_info.relocatable) |
252b5132 RH |
336 | { |
337 | if (ldemul_open_dynamic_archive (arch, search, entry)) | |
e3f2db7f AO |
338 | { |
339 | entry->sysrooted = search->sysrooted; | |
340 | return TRUE; | |
341 | } | |
252b5132 RH |
342 | } |
343 | ||
1579bae1 AM |
344 | string = xmalloc (strlen (search->name) |
345 | + strlen (slash) | |
346 | + strlen (lib) | |
347 | + strlen (entry->filename) | |
348 | + strlen (arch) | |
349 | + strlen (suffix) | |
350 | + 1); | |
252b5132 RH |
351 | |
352 | if (entry->is_archive) | |
353 | sprintf (string, "%s%s%s%s%s%s", search->name, slash, | |
354 | lib, entry->filename, arch, suffix); | |
252b5132 RH |
355 | else |
356 | sprintf (string, "%s%s%s", search->name, slash, entry->filename); | |
357 | ||
358 | if (ldfile_try_open_bfd (string, entry)) | |
359 | { | |
b90d1146 | 360 | entry->filename = string; |
e3f2db7f | 361 | entry->sysrooted = search->sysrooted; |
b34976b6 | 362 | return TRUE; |
252b5132 RH |
363 | } |
364 | ||
365 | free (string); | |
366 | } | |
367 | ||
b34976b6 | 368 | return FALSE; |
252b5132 RH |
369 | } |
370 | ||
371 | /* Open the input file specified by ENTRY. */ | |
372 | ||
373 | void | |
1579bae1 | 374 | ldfile_open_file (lang_input_statement_type *entry) |
252b5132 RH |
375 | { |
376 | if (entry->the_bfd != NULL) | |
377 | return; | |
378 | ||
379 | if (! entry->search_dirs_flag) | |
380 | { | |
381 | if (ldfile_try_open_bfd (entry->filename, entry)) | |
382 | return; | |
383 | if (strcmp (entry->filename, entry->local_sym_name) != 0) | |
f24ddbdd | 384 | einfo (_("%F%P: %s (%s): No such file: %E\n"), |
252b5132 RH |
385 | entry->filename, entry->local_sym_name); |
386 | else | |
f24ddbdd | 387 | einfo (_("%F%P: %s: No such file: %E\n"), entry->local_sym_name); |
252b5132 RH |
388 | } |
389 | else | |
390 | { | |
391 | search_arch_type *arch; | |
b34976b6 | 392 | bfd_boolean found = FALSE; |
252b5132 RH |
393 | |
394 | /* Try to open <filename><suffix> or lib<filename><suffix>.a */ | |
1579bae1 | 395 | for (arch = search_arch_head; arch != NULL; arch = arch->next) |
252b5132 | 396 | { |
78f85fd7 L |
397 | found = ldfile_open_file_search (arch->name, entry, "lib", ".a"); |
398 | if (found) | |
399 | break; | |
252b5132 | 400 | #ifdef VMS |
78f85fd7 L |
401 | found = ldfile_open_file_search (arch->name, entry, ":lib", ".a"); |
402 | if (found) | |
403 | break; | |
252b5132 | 404 | #endif |
78f85fd7 L |
405 | found = ldemul_find_potential_libraries (arch->name, entry); |
406 | if (found) | |
407 | break; | |
252b5132 | 408 | } |
4de2d33d | 409 | |
78f85fd7 L |
410 | /* If we have found the file, we don't need to search directories |
411 | again. */ | |
412 | if (found) | |
b34976b6 | 413 | entry->search_dirs_flag = FALSE; |
3fe38064 NC |
414 | else if (entry->sysrooted |
415 | && ld_sysroot | |
416 | && IS_ABSOLUTE_PATH (entry->local_sym_name)) | |
417 | einfo (_("%F%P: cannot find %s inside %s\n"), | |
418 | entry->local_sym_name, ld_sysroot); | |
78f85fd7 L |
419 | else |
420 | einfo (_("%F%P: cannot find %s\n"), entry->local_sym_name); | |
252b5132 RH |
421 | } |
422 | } | |
423 | ||
424 | /* Try to open NAME; if that fails, try NAME with EXTEN appended to it. */ | |
425 | ||
426 | static FILE * | |
1579bae1 | 427 | try_open (const char *name, const char *exten) |
252b5132 RH |
428 | { |
429 | FILE *result; | |
430 | char buff[1000]; | |
431 | ||
432 | result = fopen (name, "r"); | |
4de2d33d | 433 | |
252b5132 RH |
434 | if (trace_file_tries) |
435 | { | |
436 | if (result == NULL) | |
437 | info_msg (_("cannot find script file %s\n"), name); | |
438 | else | |
439 | info_msg (_("opened script file %s\n"), name); | |
440 | } | |
441 | ||
442 | if (result != NULL) | |
443 | return result; | |
444 | ||
445 | if (*exten) | |
446 | { | |
447 | sprintf (buff, "%s%s", name, exten); | |
448 | result = fopen (buff, "r"); | |
4de2d33d | 449 | |
252b5132 RH |
450 | if (trace_file_tries) |
451 | { | |
452 | if (result == NULL) | |
453 | info_msg (_("cannot find script file %s\n"), buff); | |
454 | else | |
455 | info_msg (_("opened script file %s\n"), buff); | |
456 | } | |
457 | } | |
458 | ||
459 | return result; | |
460 | } | |
461 | ||
462 | /* Try to open NAME; if that fails, look for it in any directories | |
396a2467 | 463 | specified with -L, without and with EXTEND appended. */ |
252b5132 RH |
464 | |
465 | FILE * | |
1579bae1 | 466 | ldfile_find_command_file (const char *name, const char *extend) |
252b5132 RH |
467 | { |
468 | search_dirs_type *search; | |
469 | FILE *result; | |
470 | char buffer[1000]; | |
471 | ||
89cdebba | 472 | /* First try raw name. */ |
1c64c4ed | 473 | result = try_open (name, ""); |
1579bae1 | 474 | if (result == NULL) |
1c64c4ed | 475 | { |
89cdebba | 476 | /* Try now prefixes. */ |
1579bae1 | 477 | for (search = search_head; search != NULL; search = search->next) |
1c64c4ed | 478 | { |
89cdebba | 479 | sprintf (buffer, "%s%s%s", search->name, slash, name); |
4de2d33d | 480 | |
1c64c4ed NC |
481 | result = try_open (buffer, extend); |
482 | if (result) | |
483 | break; | |
484 | } | |
252b5132 | 485 | } |
4de2d33d | 486 | |
252b5132 RH |
487 | return result; |
488 | } | |
489 | ||
490 | void | |
1579bae1 | 491 | ldfile_open_command_file (const char *name) |
252b5132 RH |
492 | { |
493 | FILE *ldlex_input_stack; | |
1c64c4ed | 494 | ldlex_input_stack = ldfile_find_command_file (name, ""); |
252b5132 | 495 | |
1579bae1 | 496 | if (ldlex_input_stack == NULL) |
1c64c4ed NC |
497 | { |
498 | bfd_set_error (bfd_error_system_call); | |
499 | einfo (_("%P%F: cannot open linker script file %s: %E\n"), name); | |
500 | } | |
4de2d33d | 501 | |
1c64c4ed | 502 | lex_push_file (ldlex_input_stack, name); |
4de2d33d | 503 | |
252b5132 RH |
504 | ldfile_input_filename = name; |
505 | lineno = 1; | |
b7a26f91 | 506 | |
b9a8de1e | 507 | saved_script_handle = ldlex_input_stack; |
252b5132 RH |
508 | } |
509 | ||
252b5132 | 510 | void |
1579bae1 | 511 | ldfile_add_arch (const char *in_name) |
252b5132 | 512 | { |
d1b2b2dc | 513 | char *name = xstrdup (in_name); |
1579bae1 | 514 | search_arch_type *new = xmalloc (sizeof (search_arch_type)); |
252b5132 RH |
515 | |
516 | ldfile_output_machine_name = in_name; | |
517 | ||
518 | new->name = name; | |
1579bae1 | 519 | new->next = NULL; |
252b5132 RH |
520 | while (*name) |
521 | { | |
3882b010 | 522 | *name = TOLOWER (*name); |
252b5132 RH |
523 | name++; |
524 | } | |
525 | *search_arch_tail_ptr = new; | |
526 | search_arch_tail_ptr = &new->next; | |
527 | ||
528 | } | |
252b5132 | 529 | |
89cdebba KH |
530 | /* Set the output architecture. */ |
531 | ||
252b5132 | 532 | void |
5e2f1575 | 533 | ldfile_set_output_arch (const char *string, enum bfd_architecture defarch) |
252b5132 | 534 | { |
1c64c4ed NC |
535 | const bfd_arch_info_type *arch = bfd_scan_arch (string); |
536 | ||
537 | if (arch) | |
538 | { | |
539 | ldfile_output_architecture = arch->arch; | |
540 | ldfile_output_machine = arch->mach; | |
541 | ldfile_output_machine_name = arch->printable_name; | |
542 | } | |
5e2f1575 AM |
543 | else if (defarch != bfd_arch_unknown) |
544 | ldfile_output_architecture = defarch; | |
1c64c4ed | 545 | else |
5e2f1575 | 546 | einfo (_("%P%F: cannot represent machine `%s'\n"), string); |
252b5132 | 547 | } |