1 /* Parse options for the GNU linker.
2 Copyright (C) 1991, 92, 93, 94 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
37 /* Somewhere above, sys/stat.h got included . . . . */
38 #if !defined(S_ISDIR) && defined(S_IFDIR)
39 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
42 /* Omit args to avoid the possibility of clashing with a system header
43 that might disagree about consts. */
44 unsigned long strtoul ();
46 static void set_default_dirlist PARAMS ((char *dirlist_ptr));
47 static void set_section_start PARAMS ((char *sect, char *valstr));
49 /* WINDOWS_NT; declare additional functions */
50 static void set_subsystem PARAMS ((char *subsystem_type));
51 static void set_stack_heap PARAMS ((char *valstr, boolean for_heap));
54 parse_args (argc, argv)
60 /* Starting the short option string with '-' is for programs that
61 expect options and other ARGV-elements in any order and that care about
62 the ordering of the two. We describe each non-option ARGV-element
63 as if it were the argument of an option with character code 1. */
65 const char *shortopts =
66 "-a:A:B::b:c:de:F::G:giL:l:Mm:NnO:o:R:rSsT:tu:VvXxY:y:()";
68 /* 150 isn't special; it's just an arbitrary non-ASCII char value. */
70 #define OPTION_CALL_SHARED 150
71 #define OPTION_DEFSYM (OPTION_CALL_SHARED + 1)
72 #define OPTION_DYNAMIC_LINKER (OPTION_DEFSYM + 1)
73 #define OPTION_EB (OPTION_DYNAMIC_LINKER + 1)
74 #define OPTION_EL (OPTION_EB + 1)
75 #define OPTION_HEAP (OPTION_EL + 1)
76 #define OPTION_EMBEDDED_RELOCS (OPTION_HEAP + 1)
77 #define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1)
78 #define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1)
79 #define OPTION_IGNORE (OPTION_HELP + 1)
80 #define OPTION_MAP (OPTION_IGNORE + 1)
81 #define OPTION_NO_KEEP_MEMORY (OPTION_MAP + 1)
82 #define OPTION_NOINHIBIT_EXEC (OPTION_NO_KEEP_MEMORY + 1)
83 #define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1)
84 #define OPTION_OFORMAT (OPTION_NON_SHARED + 1)
85 #define OPTION_RELAX (OPTION_OFORMAT + 1)
86 #define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1)
87 #define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1)
88 #define OPTION_SHARED (OPTION_RPATH + 1)
89 #define OPTION_SONAME (OPTION_SHARED + 1)
90 #define OPTION_SORT_COMMON (OPTION_SONAME + 1)
91 #define OPTION_STACK (OPTION_SORT_COMMON + 1) /*WINDOWS_NT*/
92 #define OPTION_STATS (OPTION_STACK + 1)
93 #define OPTION_SUBSYSTEM (OPTION_STATS + 1) /* WINDOWS_NT */
94 #define OPTION_TBSS (OPTION_SUBSYSTEM + 1)
95 #define OPTION_TDATA (OPTION_TBSS + 1)
96 #define OPTION_TTEXT (OPTION_TDATA + 1)
97 #define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1)
98 #define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1)
99 #define OPTION_VERBOSE (OPTION_UR + 1)
100 #define OPTION_VERSION (OPTION_VERBOSE + 1)
101 #define OPTION_WARN_COMMON (OPTION_VERSION + 1)
102 #define OPTION_WARN_ONCE (OPTION_WARN_COMMON + 1)
103 #define OPTION_SPLIT_BY_RELOC (OPTION_WARN_ONCE + 1)
104 #define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
105 #define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
106 #define OPTION_BASE_FILE (OPTION_WHOLE_ARCHIVE + 1)
107 static struct option longopts[] = {
108 {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
109 {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
110 {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
111 {"dc", no_argument, NULL, 'd'},
112 {"defsym", required_argument, NULL, OPTION_DEFSYM},
113 {"dll-verbose", no_argument, NULL, OPTION_VERSION}, /* Linux. */
114 {"dn", no_argument, NULL, OPTION_NON_SHARED},
115 {"dp", no_argument, NULL, 'd'},
116 {"dy", no_argument, NULL, OPTION_CALL_SHARED},
117 {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
118 {"EB", no_argument, NULL, OPTION_EB},
119 {"EL", no_argument, NULL, OPTION_EL},
120 {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
121 {"end-group", no_argument, NULL, ')'},
122 {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
123 {"format", required_argument, NULL, 'b'},
124 {"heap", required_argument, NULL, OPTION_HEAP}, /* WINDOWS_NT */
125 {"help", no_argument, NULL, OPTION_HELP},
126 {"Map", required_argument, NULL, OPTION_MAP},
127 {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
128 {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
129 {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
130 {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
131 {"oformat", required_argument, NULL, OPTION_OFORMAT},
132 {"Qy", no_argument, NULL, OPTION_IGNORE},
133 {"qmagic", no_argument, NULL, OPTION_IGNORE}, /* Linux compatibility. */
134 {"relax", no_argument, NULL, OPTION_RELAX},
135 {"retain-symbols-file", required_argument, NULL, OPTION_RETAIN_SYMBOLS_FILE},
136 {"rpath", required_argument, NULL, OPTION_RPATH},
137 {"shared", no_argument, NULL, OPTION_SHARED},
138 {"soname", required_argument, NULL, OPTION_SONAME},
139 {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
140 {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
141 {"stack", required_argument, NULL, OPTION_STACK}, /* WINDOWS_NT */
142 {"start-group", no_argument, NULL, '('},
143 {"stats", no_argument, NULL, OPTION_STATS},
144 {"static", no_argument, NULL, OPTION_NON_SHARED},
145 {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM}, /* WINDOWS_NT */
146 {"Tbss", required_argument, NULL, OPTION_TBSS},
147 {"Tdata", required_argument, NULL, OPTION_TDATA},
148 {"Ttext", required_argument, NULL, OPTION_TTEXT},
149 {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
150 {"Ur", no_argument, NULL, OPTION_UR},
151 {"verbose", no_argument, NULL, OPTION_VERBOSE},
152 {"version", no_argument, NULL, OPTION_VERSION},
153 {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
154 {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
155 {"split-by-reloc", required_argument, NULL, OPTION_SPLIT_BY_RELOC},
156 {"split-by-file", no_argument, NULL, OPTION_SPLIT_BY_FILE},
157 {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
158 {"base-file", required_argument, NULL, OPTION_BASE_FILE},
159 {NULL, no_argument, NULL, 0}
164 /* getopt_long_only is like getopt_long, but '-' as well as '--' can
165 indicate a long option. */
167 int optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
176 case 1: /* File name. */
177 lang_add_input_file (optarg, lang_input_file_is_file_enum,
184 /* For HP/UX compatibility. Actually -a shared should mean
185 ``use only shared libraries'' but, then, we don't
186 currently support shared libraries on HP/UX anyhow. */
187 if (strcmp (optarg, "archive") == 0)
188 config.dynamic_link = false;
189 else if (strcmp (optarg, "shared") == 0
190 || strcmp (optarg, "default") == 0)
191 config.dynamic_link = true;
193 einfo ("%P%F: unrecognized -a option `%s'\n", optarg);
196 ldfile_add_arch (optarg);
199 lang_add_target (optarg);
202 ldfile_open_command_file (optarg);
203 parser_input = input_mri_script;
206 case OPTION_CALL_SHARED:
207 config.dynamic_link = true;
209 case OPTION_NON_SHARED:
210 config.dynamic_link = false;
213 command_line.force_common_definition = true;
216 lex_redirect (optarg);
217 parser_input = input_defsym;
220 case OPTION_DYNAMIC_LINKER:
221 command_line.interpreter = optarg;
224 command_line.endian = ENDIAN_BIG;
227 command_line.endian = ENDIAN_LITTLE;
229 case OPTION_EMBEDDED_RELOCS:
230 command_line.embedded_relocs = true;
232 case OPTION_EXPORT_DYNAMIC:
233 command_line.export_dynamic = true;
236 lang_add_entry (optarg, 1);
244 g_switch_value = strtoul (optarg, &end, 0);
246 einfo ("%P%F: invalid number `%s'\n", optarg);
252 case OPTION_HEAP: /* WINDOWS_NT */
253 link_info.stack_heap_parameters.heap_defined = true;
254 set_stack_heap (optarg, true);
261 ldfile_add_library_path (optarg, true);
264 lang_add_input_file (optarg, lang_input_file_is_l_enum,
268 config.map_filename = "-";
271 /* Ignore. Was handled in a pre-parse. */
274 config.map_filename = optarg;
277 config.text_read_only = false;
278 config.magic_demand_paged = false;
281 config.magic_demand_paged = false;
283 case OPTION_NO_KEEP_MEMORY:
284 link_info.keep_memory = false;
286 case OPTION_NOINHIBIT_EXEC:
287 force_make_executable = true;
290 /* FIXME "-O<non-digits> <value>" used to set the address of
291 section <non-digits>. Was this for compatibility with
292 something, or can we create a new option to do that
293 (with a syntax similar to -defsym)?
294 getopt can't handle two args to an option without kludges. */
295 set_default_dirlist (optarg);
298 lang_add_output (optarg, 0);
301 lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
305 link_info.relocateable = true;
306 config.build_constructors = false;
307 config.magic_demand_paged = false;
308 config.text_read_only = false;
309 config.dynamic_link = false;
312 /* The GNU linker traditionally uses -R to mean to include
313 only the symbols from a file. The Solaris linker uses -R
314 to set the path used by the runtime linker to find
315 libraries. This is the GNU linker -rpath argument. We
316 try to support both simultaneously by checking the file
317 named. If it is a directory, rather than a regular file,
318 we assume -rpath was meant. */
322 if (stat (optarg, &s) >= 0
323 && ! S_ISDIR (s.st_mode))
325 lang_add_input_file (optarg,
326 lang_input_file_is_symbols_only_enum,
333 if (command_line.rpath == NULL)
334 command_line.rpath = buystring (optarg);
339 buf = xmalloc (strlen (command_line.rpath)
342 sprintf (buf, "%s:%s", command_line.rpath, optarg);
343 free (command_line.rpath);
344 command_line.rpath = buf;
348 command_line.relax = true;
350 case OPTION_RETAIN_SYMBOLS_FILE:
351 add_keepsyms_file (optarg);
354 link_info.strip = strip_debugger;
357 link_info.strip = strip_all;
360 link_info.shared = true;
363 command_line.soname = optarg;
365 case OPTION_SORT_COMMON:
366 config.sort_common = true;
368 case OPTION_STACK: /* WINDOWS_NT */
369 link_info.stack_heap_parameters.stack_defined = true;
370 set_stack_heap (optarg, false);
375 case OPTION_SUBSYSTEM: /* WINDOWS_NT */
376 set_subsystem (optarg);
382 ldfile_open_command_file (optarg);
383 parser_input = input_script;
387 set_section_start (".bss", optarg);
390 set_section_start (".data", optarg);
393 set_section_start (".text", optarg);
395 case OPTION_TRADITIONAL_FORMAT:
396 config.traditional_format = true;
399 link_info.relocateable = true;
400 config.build_constructors = true;
401 config.magic_demand_paged = false;
402 config.text_read_only = false;
403 config.dynamic_link = false;
406 ldlang_add_undef (optarg);
410 version_printed = true;
411 trace_file_tries = true;
415 version_printed = true;
419 version_printed = true;
423 version_printed = true;
425 case OPTION_WARN_COMMON:
426 config.warn_common = true;
428 case OPTION_WARN_ONCE:
429 config.warn_once = true;
431 case OPTION_WHOLE_ARCHIVE:
432 whole_archive = true;
434 case OPTION_BASE_FILE:
435 link_info.base_file = (PTR) fopen (optarg,"w");
436 if (link_info.base_file == NULL)
438 fprintf (stderr, "%s: Can't open base file %s\n",
439 program_name, optarg);
444 link_info.discard = discard_l;
447 link_info.discard = discard_all;
450 set_default_dirlist (optarg);
455 case OPTION_SPLIT_BY_RELOC:
456 config.split_by_reloc = atoi (optarg);
458 case OPTION_SPLIT_BY_FILE:
459 config.split_by_file = true;
465 "%s: may not nest groups (--help for usage)\n",
476 "%s: group ended before it began (--help for usage)\n",
490 /* Add the (colon-separated) elements of DIRLIST_PTR to the
491 library search path. */
494 set_default_dirlist (dirlist_ptr)
501 p = strchr (dirlist_ptr, ':');
505 ldfile_add_library_path (dirlist_ptr, true);
514 set_section_start (sect, valstr)
518 unsigned long val = strtoul (valstr, &end, 16);
520 einfo ("%P%F: invalid hex number `%s'\n", valstr);
521 lang_section_start (sect, exp_intop (val));
524 /* WINDOWS_NT; added routines to get the subsystem type, heap and/or stack
525 parameters which may be input from the command line */
527 set_subsystem (subsystem_type)
528 char *subsystem_type;
530 if (strcmp (subsystem_type, "native") == 0)
532 link_info.subsystem = native;
534 else if (strcmp (subsystem_type, "windows") == 0)
536 link_info.subsystem = windows;
538 else if (strcmp (subsystem_type, "console") == 0)
540 link_info.subsystem = console;
542 else if (strcmp (subsystem_type, "os2") == 0)
544 link_info.subsystem = os2;
546 else if (strcmp (subsystem_type, "posix") == 0)
548 link_info.subsystem = posix;
551 einfo ("%P%F: invalid subsystem type `%s'\n", subsystem_type);
556 set_stack_heap (valstr, for_heap)
560 char *begin_commit, *end;
564 /* There may be two values passed in to the -stack or -heap switches like
567 where the first parameter is the stack (or heap) reserve and the second
568 is commit. The second parameter is optional. */
570 /* get the reserve value */
571 reserve = strtoul (valstr, &begin_commit, 16);
573 if (strcmp (valstr, begin_commit) == 0)
574 /* the reserve value couldn't be read */
575 einfo ("%P%F: invalid hex number for reserve[,commit] '%s'\n", valstr);
576 else if (strcmp (begin_commit, "\0") != 0) /* check for a commit value */
578 begin_commit += 1; /* increment begin_commit to point past ',' */
579 commit = strtoul (begin_commit, &end, 16);
580 if (strcmp (end, begin_commit) == 0)
581 einfo ("%P%F: invalid hex number for commit '%s'\n", begin_commit);
586 link_info.stack_heap_parameters.heap_reserve = reserve;
587 link_info.stack_heap_parameters.heap_commit = commit;
591 link_info.stack_heap_parameters.stack_reserve = reserve;
592 link_info.stack_heap_parameters.stack_commit = commit;
596 printf ("reserve = %8x commit = %8x\n", reserve, commit);