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
= fopen (optarg
,"w");
436 if (!link_info
.base_file
) {
437 fprintf (stderr
, "%s: Can't open base file %s\n",
438 program_name
, optarg
);
443 link_info
.discard
= discard_l
;
446 link_info
.discard
= discard_all
;
449 set_default_dirlist (optarg
);
454 case OPTION_SPLIT_BY_RELOC
:
455 config
.split_by_reloc
= atoi (optarg
);
457 case OPTION_SPLIT_BY_FILE
:
458 config
.split_by_file
= true;
464 "%s: may not nest groups (--help for usage)\n",
475 "%s: group ended before it began (--help for usage)\n",
489 /* Add the (colon-separated) elements of DIRLIST_PTR to the
490 library search path. */
493 set_default_dirlist (dirlist_ptr
)
500 p
= strchr (dirlist_ptr
, ':');
504 ldfile_add_library_path (dirlist_ptr
, true);
513 set_section_start (sect
, valstr
)
517 unsigned long val
= strtoul (valstr
, &end
, 16);
519 einfo ("%P%F: invalid hex number `%s'\n", valstr
);
520 lang_section_start (sect
, exp_intop (val
));
523 /* WINDOWS_NT; added routines to get the subsystem type, heap and/or stack
524 parameters which may be input from the command line */
526 set_subsystem (subsystem_type
)
527 char *subsystem_type
;
529 if (strcmp (subsystem_type
, "native") == 0)
531 link_info
.subsystem
= native
;
533 else if (strcmp (subsystem_type
, "windows") == 0)
535 link_info
.subsystem
= windows
;
537 else if (strcmp (subsystem_type
, "console") == 0)
539 link_info
.subsystem
= console
;
541 else if (strcmp (subsystem_type
, "os2") == 0)
543 link_info
.subsystem
= os2
;
545 else if (strcmp (subsystem_type
, "posix") == 0)
547 link_info
.subsystem
= posix
;
550 einfo ("%P%F: invalid subsystem type `%s'\n", subsystem_type
);
555 set_stack_heap (valstr
, for_heap
)
559 char *begin_commit
, *end
;
563 /* There may be two values passed in to the -stack or -heap switches like
566 where the first parameter is the stack (or heap) reserve and the second
567 is commit. The second parameter is optional. */
569 /* get the reserve value */
570 reserve
= strtoul (valstr
, &begin_commit
, 16);
572 if (strcmp (valstr
, begin_commit
) == 0)
573 /* the reserve value couldn't be read */
574 einfo ("%P%F: invalid hex number for reserve[,commit] '%s'\n", valstr
);
575 else if (strcmp (begin_commit
, "\0") != 0) /* check for a commit value */
577 begin_commit
+= 1; /* increment begin_commit to point past ',' */
578 commit
= strtoul (begin_commit
, &end
, 16);
579 if (strcmp (end
, begin_commit
) == 0)
580 einfo ("%P%F: invalid hex number for commit '%s'\n", begin_commit
);
585 link_info
.stack_heap_parameters
.heap_reserve
= reserve
;
586 link_info
.stack_heap_parameters
.heap_commit
= commit
;
590 link_info
.stack_heap_parameters
.stack_reserve
= reserve
;
591 link_info
.stack_heap_parameters
.stack_commit
= commit
;
595 printf ("reserve = %8x commit = %8x\n", reserve
, commit
);