1 /* Parse options for the GNU linker.
2 Copyright (C) 1991, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
4 This file is part of GLD, the Gnu Linker.
6 GLD is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GLD is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GLD; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
38 /* Somewhere above, sys/stat.h got included . . . . */
39 #if !defined(S_ISDIR) && defined(S_IFDIR)
40 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
43 /* Omit args to avoid the possibility of clashing with a system header
44 that might disagree about consts. */
45 unsigned long strtoul ();
47 static void set_default_dirlist PARAMS ((char *dirlist_ptr));
48 static void set_section_start PARAMS ((char *sect, char *valstr));
50 /* Non-zero if we are processing a --defsym from the command line. */
51 int parsing_defsym = 0;
54 parse_args (argc, argv)
60 char *default_dirlist = NULL;
62 /* Starting the short option string with '-' is for programs that
63 expect options and other ARGV-elements in any order and that care about
64 the ordering of the two. We describe each non-option ARGV-element
65 as if it were the argument of an option with character code 1. */
67 const char *shortopts =
68 "-a:A:b:c:de:EF::G:gh:iL:l:Mm:NnO:o:R:rSsT:tu:VvXxY:y:z:()";
70 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
72 #define OPTION_ASSERT 150
73 #define OPTION_CALL_SHARED (OPTION_ASSERT + 1)
74 #define OPTION_DEFSYM (OPTION_CALL_SHARED + 1)
75 #define OPTION_DYNAMIC_LINKER (OPTION_DEFSYM + 1)
76 #define OPTION_EB (OPTION_DYNAMIC_LINKER + 1)
77 #define OPTION_EL (OPTION_EB + 1)
78 #define OPTION_EMBEDDED_RELOCS (OPTION_EL + 1)
79 #define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1)
80 #define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1)
81 #define OPTION_IGNORE (OPTION_HELP + 1)
82 #define OPTION_MAP (OPTION_IGNORE + 1)
83 #define OPTION_NO_KEEP_MEMORY (OPTION_MAP + 1)
84 #define OPTION_NOINHIBIT_EXEC (OPTION_NO_KEEP_MEMORY + 1)
85 #define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1)
86 #define OPTION_NO_WHOLE_ARCHIVE (OPTION_NON_SHARED + 1)
87 #define OPTION_OFORMAT (OPTION_NO_WHOLE_ARCHIVE + 1)
88 #define OPTION_RELAX (OPTION_OFORMAT + 1)
89 #define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1)
90 #define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1)
91 #define OPTION_RPATH_LINK (OPTION_RPATH + 1)
92 #define OPTION_SHARED (OPTION_RPATH_LINK + 1)
93 #define OPTION_SONAME (OPTION_SHARED + 1)
94 #define OPTION_SORT_COMMON (OPTION_SONAME + 1)
95 #define OPTION_STATS (OPTION_SORT_COMMON + 1)
96 #define OPTION_SYMBOLIC (OPTION_STATS + 1)
97 #define OPTION_TBSS (OPTION_SYMBOLIC + 1)
98 #define OPTION_TDATA (OPTION_TBSS + 1)
99 #define OPTION_TTEXT (OPTION_TDATA + 1)
100 #define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1)
101 #define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1)
102 #define OPTION_VERBOSE (OPTION_UR + 1)
103 #define OPTION_VERSION (OPTION_VERBOSE + 1)
104 #define OPTION_WARN_COMMON (OPTION_VERSION + 1)
105 #define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1)
106 #define OPTION_WARN_MULTIPLE_GP (OPTION_WARN_CONSTRUCTORS + 1)
107 #define OPTION_WARN_ONCE (OPTION_WARN_MULTIPLE_GP + 1)
108 #define OPTION_SPLIT_BY_RELOC (OPTION_WARN_ONCE + 1)
109 #define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
110 #define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
111 #define OPTION_WRAP (OPTION_WHOLE_ARCHIVE + 1)
113 static struct option longopts[] = {
114 /* Sorted alphabeticaly, except for the PE options grouped at the end. */
115 {"assert", required_argument, NULL, OPTION_ASSERT},
116 {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
117 {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
118 {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
119 {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
120 {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
121 {"dc", no_argument, NULL, 'd'},
122 {"defsym", required_argument, NULL, OPTION_DEFSYM},
123 {"dll-verbose", no_argument, NULL, OPTION_VERSION}, /* Linux. */
124 {"dn", no_argument, NULL, OPTION_NON_SHARED},
125 {"dp", no_argument, NULL, 'd'},
126 {"dy", no_argument, NULL, OPTION_CALL_SHARED},
127 {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
128 {"EB", no_argument, NULL, OPTION_EB},
129 {"EL", no_argument, NULL, OPTION_EL},
130 {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
131 {"end-group", no_argument, NULL, ')'},
132 {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
133 {"format", required_argument, NULL, 'b'},
134 {"help", no_argument, NULL, OPTION_HELP},
135 {"Map", required_argument, NULL, OPTION_MAP},
136 {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
137 {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
138 {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
139 {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
140 {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
141 {"oformat", required_argument, NULL, OPTION_OFORMAT},
142 {"Qy", no_argument, NULL, OPTION_IGNORE},
143 {"qmagic", no_argument, NULL, OPTION_IGNORE}, /* Linux compatibility. */
144 {"relax", no_argument, NULL, OPTION_RELAX},
145 {"retain-symbols-file", required_argument, NULL, OPTION_RETAIN_SYMBOLS_FILE},
146 {"rpath", required_argument, NULL, OPTION_RPATH},
147 {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
148 {"shared", no_argument, NULL, OPTION_SHARED},
149 {"soname", required_argument, NULL, OPTION_SONAME},
150 {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
151 {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
152 {"start-group", no_argument, NULL, '('},
153 {"stats", no_argument, NULL, OPTION_STATS},
154 {"static", no_argument, NULL, OPTION_NON_SHARED},
155 {"Tbss", required_argument, NULL, OPTION_TBSS},
156 {"Tdata", required_argument, NULL, OPTION_TDATA},
157 {"Ttext", required_argument, NULL, OPTION_TTEXT},
158 {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
159 {"Ur", no_argument, NULL, OPTION_UR},
160 {"verbose", no_argument, NULL, OPTION_VERBOSE},
161 {"version", no_argument, NULL, OPTION_VERSION},
162 {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
163 {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
164 {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
165 {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
166 {"split-by-reloc", required_argument, NULL, OPTION_SPLIT_BY_RELOC},
167 {"split-by-file", no_argument, NULL, OPTION_SPLIT_BY_FILE},
168 {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
169 {"wrap", required_argument, NULL, OPTION_WRAP},
171 {NULL, no_argument, NULL, 0}
174 /* The -G option is ambiguous on different platforms. Sometimes it
175 specifies the largest data size to put into the small data
176 section. Sometimes it is equivalent to --shared. Unfortunately,
177 the first form takes an argument, while the second does not.
179 We need to permit the --shared form because on some platforms,
180 such as Solaris, gcc -shared will pass -G to the linker.
182 To permit either usage, we look through the argument list. If we
183 find -G not followed by a number, we change it into --shared.
184 This will work for most normal cases. */
185 for (i = 1; i < argc; i++)
186 if (strcmp (argv[i], "-G") == 0
188 || ! isdigit (argv[i + 1][0])))
189 argv[i] = (char *) "--shared";
193 /* getopt_long_only is like getopt_long, but '-' as well as '--' can
194 indicate a long option. */
198 if (ldemul_parse_args (argc, argv))
201 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
209 case 1: /* File name. */
210 lang_add_input_file (optarg, lang_input_file_is_file_enum,
217 /* For HP/UX compatibility. Actually -a shared should mean
218 ``use only shared libraries'' but, then, we don't
219 currently support shared libraries on HP/UX anyhow. */
220 if (strcmp (optarg, "archive") == 0)
221 config.dynamic_link = false;
222 else if (strcmp (optarg, "shared") == 0
223 || strcmp (optarg, "default") == 0)
224 config.dynamic_link = true;
226 einfo ("%P%F: unrecognized -a option `%s'\n", optarg);
229 /* FIXME: We just ignore these, but we should handle them. */
230 if (strcmp (optarg, "definitions") == 0)
232 else if (strcmp (optarg, "nodefinitions") == 0)
234 else if (strcmp (optarg, "nosymbolic") == 0)
236 else if (strcmp (optarg, "pure-text") == 0)
239 einfo ("%P%F: unrecognized -assert option `%s'\n", optarg);
242 ldfile_add_arch (optarg);
245 lang_add_target (optarg);
248 ldfile_open_command_file (optarg);
249 parser_input = input_mri_script;
252 case OPTION_CALL_SHARED:
253 config.dynamic_link = true;
255 case OPTION_NON_SHARED:
256 config.dynamic_link = false;
259 command_line.force_common_definition = true;
263 lex_redirect (optarg);
264 parser_input = input_defsym;
270 case OPTION_DYNAMIC_LINKER:
271 command_line.interpreter = optarg;
274 command_line.endian = ENDIAN_BIG;
277 command_line.endian = ENDIAN_LITTLE;
279 case OPTION_EMBEDDED_RELOCS:
280 command_line.embedded_relocs = true;
282 case OPTION_EXPORT_DYNAMIC:
283 case 'E': /* HP/UX compatibility. */
284 command_line.export_dynamic = true;
287 lang_add_entry (optarg, true);
295 g_switch_value = strtoul (optarg, &end, 0);
297 einfo ("%P%F: invalid number `%s'\n", optarg);
308 ldfile_add_library_path (optarg, true);
311 lang_add_input_file (optarg, lang_input_file_is_l_enum,
315 config.map_filename = "-";
318 /* Ignore. Was handled in a pre-parse. */
321 config.map_filename = optarg;
324 config.text_read_only = false;
325 config.magic_demand_paged = false;
326 config.dynamic_link = false;
329 config.magic_demand_paged = false;
330 config.dynamic_link = false;
332 case OPTION_NO_KEEP_MEMORY:
333 link_info.keep_memory = false;
335 case OPTION_NOINHIBIT_EXEC:
336 force_make_executable = true;
338 case OPTION_NO_WHOLE_ARCHIVE:
339 whole_archive = false;
342 /* FIXME "-O<non-digits> <value>" used to set the address of
343 section <non-digits>. Was this for compatibility with
344 something, or can we create a new option to do that
345 (with a syntax similar to -defsym)?
346 getopt can't handle two args to an option without kludges. */
349 lang_add_output (optarg, 0);
352 lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
356 link_info.relocateable = true;
357 config.build_constructors = false;
358 config.magic_demand_paged = false;
359 config.text_read_only = false;
360 config.dynamic_link = false;
363 /* The GNU linker traditionally uses -R to mean to include
364 only the symbols from a file. The Solaris linker uses -R
365 to set the path used by the runtime linker to find
366 libraries. This is the GNU linker -rpath argument. We
367 try to support both simultaneously by checking the file
368 named. If it is a directory, rather than a regular file,
369 we assume -rpath was meant. */
373 if (stat (optarg, &s) >= 0
374 && ! S_ISDIR (s.st_mode))
376 lang_add_input_file (optarg,
377 lang_input_file_is_symbols_only_enum,
384 if (command_line.rpath == NULL)
385 command_line.rpath = buystring (optarg);
390 buf = xmalloc (strlen (command_line.rpath)
393 sprintf (buf, "%s:%s", command_line.rpath, optarg);
394 free (command_line.rpath);
395 command_line.rpath = buf;
398 case OPTION_RPATH_LINK:
399 if (command_line.rpath_link == NULL)
400 command_line.rpath_link = buystring (optarg);
405 buf = xmalloc (strlen (command_line.rpath_link)
408 sprintf (buf, "%s:%s", command_line.rpath_link, optarg);
409 free (command_line.rpath_link);
410 command_line.rpath_link = buf;
414 command_line.relax = true;
416 case OPTION_RETAIN_SYMBOLS_FILE:
417 add_keepsyms_file (optarg);
420 link_info.strip = strip_debugger;
423 link_info.strip = strip_all;
426 link_info.shared = true;
428 case 'h': /* Used on Solaris. */
430 command_line.soname = optarg;
432 case OPTION_SORT_COMMON:
433 config.sort_common = true;
438 case OPTION_SYMBOLIC:
439 link_info.symbolic = true;
445 ldfile_open_command_file (optarg);
446 parser_input = input_script;
450 set_section_start (".bss", optarg);
453 set_section_start (".data", optarg);
456 set_section_start (".text", optarg);
458 case OPTION_TRADITIONAL_FORMAT:
459 config.traditional_format = true;
462 link_info.relocateable = true;
463 config.build_constructors = true;
464 config.magic_demand_paged = false;
465 config.text_read_only = false;
466 config.dynamic_link = false;
469 ldlang_add_undef (optarg);
473 version_printed = true;
474 trace_file_tries = true;
478 version_printed = true;
482 version_printed = true;
486 version_printed = true;
488 case OPTION_WARN_COMMON:
489 config.warn_common = true;
491 case OPTION_WARN_CONSTRUCTORS:
492 config.warn_constructors = true;
494 case OPTION_WARN_MULTIPLE_GP:
495 config.warn_multiple_gp = true;
497 case OPTION_WARN_ONCE:
498 config.warn_once = true;
500 case OPTION_WHOLE_ARCHIVE:
501 whole_archive = true;
507 link_info.discard = discard_l;
510 link_info.discard = discard_all;
513 if (strncmp (optarg, "P,", 2) == 0)
515 default_dirlist = optarg;
521 /* We accept and ignore this option for Solaris
522 compatibility. Actually, on Solaris, optarg is not
523 ignored. Someday we should handle it correctly. FIXME. */
525 case OPTION_SPLIT_BY_RELOC:
526 config.split_by_reloc = atoi (optarg);
528 case OPTION_SPLIT_BY_FILE:
529 config.split_by_file = true;
535 "%s: may not nest groups (--help for usage)\n",
546 "%s: group ended before it began (--help for usage)\n",
560 if (default_dirlist != NULL)
561 set_default_dirlist (default_dirlist);
565 /* Add the (colon-separated) elements of DIRLIST_PTR to the
566 library search path. */
569 set_default_dirlist (dirlist_ptr)
576 p = strchr (dirlist_ptr, ':');
580 ldfile_add_library_path (dirlist_ptr, true);
589 set_section_start (sect, valstr)
593 unsigned long val = strtoul (valstr, &end, 16);
595 einfo ("%P%F: invalid hex number `%s'\n", valstr);
596 lang_section_start (sect, exp_intop (val));