1 /* Parse options for the GNU linker.
2 Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 1998
3 Free Software Foundation, Inc.
5 This file is part of GLD, the Gnu Linker.
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)
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.
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
24 #include "libiberty.h"
41 #ifndef PATH_SEPARATOR
42 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
43 #define PATH_SEPARATOR ';'
45 #define PATH_SEPARATOR ':'
49 /* Somewhere above, sys/stat.h got included . . . . */
50 #if !defined(S_ISDIR) && defined(S_IFDIR)
51 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
54 /* Omit args to avoid the possibility of clashing with a system header
55 that might disagree about consts. */
56 unsigned long strtoul ();
58 static void set_default_dirlist
PARAMS ((char *dirlist_ptr
));
59 static void set_section_start
PARAMS ((char *sect
, char *valstr
));
60 static void help
PARAMS ((void));
62 /* Non-zero if we are processing a --defsym from the command line. */
63 int parsing_defsym
= 0;
65 /* Codes used for the long options with no short synonyms. 150 isn't
66 special; it's just an arbitrary non-ASCII char value. */
68 #define OPTION_ASSERT 150
69 #define OPTION_CALL_SHARED (OPTION_ASSERT + 1)
70 #define OPTION_CREF (OPTION_CALL_SHARED + 1)
71 #define OPTION_DEFSYM (OPTION_CREF + 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_EMBEDDED_RELOCS (OPTION_EL + 1)
76 #define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1)
77 #define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1)
78 #define OPTION_IGNORE (OPTION_HELP + 1)
79 #define OPTION_MAP (OPTION_IGNORE + 1)
80 #define OPTION_NO_KEEP_MEMORY (OPTION_MAP + 1)
81 #define OPTION_NO_WARN_MISMATCH (OPTION_NO_KEEP_MEMORY + 1)
82 #define OPTION_NOINHIBIT_EXEC (OPTION_NO_WARN_MISMATCH + 1)
83 #define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1)
84 #define OPTION_NO_WHOLE_ARCHIVE (OPTION_NON_SHARED + 1)
85 #define OPTION_OFORMAT (OPTION_NO_WHOLE_ARCHIVE + 1)
86 #define OPTION_RELAX (OPTION_OFORMAT + 1)
87 #define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1)
88 #define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1)
89 #define OPTION_RPATH_LINK (OPTION_RPATH + 1)
90 #define OPTION_SHARED (OPTION_RPATH_LINK + 1)
91 #define OPTION_SONAME (OPTION_SHARED + 1)
92 #define OPTION_SORT_COMMON (OPTION_SONAME + 1)
93 #define OPTION_STATS (OPTION_SORT_COMMON + 1)
94 #define OPTION_SYMBOLIC (OPTION_STATS + 1)
95 #define OPTION_TASK_LINK (OPTION_SYMBOLIC + 1)
96 #define OPTION_TBSS (OPTION_TASK_LINK + 1)
97 #define OPTION_TDATA (OPTION_TBSS + 1)
98 #define OPTION_TTEXT (OPTION_TDATA + 1)
99 #define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1)
100 #define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1)
101 #define OPTION_VERBOSE (OPTION_UR + 1)
102 #define OPTION_VERSION (OPTION_VERBOSE + 1)
103 #define OPTION_VERSION_SCRIPT (OPTION_VERSION + 1)
104 #define OPTION_VERSION_EXPORTS_SECTION (OPTION_VERSION_SCRIPT + 1)
105 #define OPTION_WARN_COMMON (OPTION_VERSION_EXPORTS_SECTION + 1)
106 #define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1)
107 #define OPTION_WARN_MULTIPLE_GP (OPTION_WARN_CONSTRUCTORS + 1)
108 #define OPTION_WARN_ONCE (OPTION_WARN_MULTIPLE_GP + 1)
109 #define OPTION_WARN_SECTION_ALIGN (OPTION_WARN_ONCE + 1)
110 #define OPTION_SPLIT_BY_RELOC (OPTION_WARN_SECTION_ALIGN + 1)
111 #define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
112 #define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
113 #define OPTION_WRAP (OPTION_WHOLE_ARCHIVE + 1)
114 #define OPTION_FORCE_EXE_SUFFIX (OPTION_WRAP + 1)
115 #define OPTION_GC_SECTIONS (OPTION_FORCE_EXE_SUFFIX + 1)
116 #define OPTION_NO_GC_SECTIONS (OPTION_GC_SECTIONS + 1)
117 #define OPTION_CHECK_SECTIONS (OPTION_NO_GC_SECTIONS + 1)
118 #define OPTION_NO_CHECK_SECTIONS (OPTION_CHECK_SECTIONS + 1)
120 /* The long options. This structure is used for both the option
121 parsing and the help text. */
125 /* The long option information. */
127 /* The short option with the same meaning ('\0' if none). */
129 /* The name of the argument (NULL if none). */
131 /* The documentation string. If this is NULL, this is a synonym for
132 the previous option. */
136 /* Use one dash before long option name. */
138 /* Use two dashes before long option name. */
140 /* Don't mention this option in --help output. */
145 static const struct ld_option ld_options
[] =
147 { {NULL
, required_argument
, NULL
, '\0'},
148 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
150 { {"architecture", required_argument
, NULL
, 'A'},
151 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES
},
152 { {"format", required_argument
, NULL
, 'b'},
153 'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES
},
154 { {"mri-script", required_argument
, NULL
, 'c'},
155 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES
},
156 { {"dc", no_argument
, NULL
, 'd'},
157 'd', NULL
, N_("Force common symbols to be defined"), ONE_DASH
},
158 { {"dp", no_argument
, NULL
, 'd'},
159 '\0', NULL
, NULL
, ONE_DASH
},
160 { {"entry", required_argument
, NULL
, 'e'},
161 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES
},
162 { {"export-dynamic", no_argument
, NULL
, OPTION_EXPORT_DYNAMIC
},
163 'E', NULL
, N_("Export all dynamic symbols"), TWO_DASHES
},
164 { {"EB", no_argument
, NULL
, OPTION_EB
},
165 '\0', NULL
, N_("Link big-endian objects"), ONE_DASH
},
166 { {"EL", no_argument
, NULL
, OPTION_EL
},
167 '\0', NULL
, N_("Link little-endian objects"), ONE_DASH
},
168 { {"auxiliary", required_argument
, NULL
, 'f'},
169 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
171 { {"filter", required_argument
, NULL
, 'F'},
172 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES
},
173 { {NULL
, no_argument
, NULL
, '\0'},
174 'g', NULL
, N_("Ignored"), ONE_DASH
},
175 { {"gpsize", required_argument
, NULL
, 'G'},
176 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
178 { {"soname", required_argument
, NULL
, OPTION_SONAME
},
179 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH
},
180 { {"library", required_argument
, NULL
, 'l'},
181 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES
},
182 { {"library-path", required_argument
, NULL
, 'L'},
183 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES
},
184 { {NULL
, required_argument
, NULL
, '\0'},
185 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH
},
186 { {"print-map", no_argument
, NULL
, 'M'},
187 'M', NULL
, N_("Print map file on standard output"), TWO_DASHES
},
188 { {"nmagic", no_argument
, NULL
, 'n'},
189 'n', NULL
, N_("Do not page align data"), TWO_DASHES
},
190 { {"omagic", no_argument
, NULL
, 'N'},
191 'N', NULL
, N_("Do not page align data, do not make text readonly"),
193 { {"output", required_argument
, NULL
, 'o'},
194 'o', N_("FILE"), N_("Set output file name"), TWO_DASHES
},
195 { {NULL
, required_argument
, NULL
, '\0'},
196 'O', NULL
, N_("Optimize output file"), ONE_DASH
},
197 { {"Qy", no_argument
, NULL
, OPTION_IGNORE
},
198 '\0', NULL
, N_("Ignored for SVR4 compatibility"), ONE_DASH
},
199 { {"relocateable", no_argument
, NULL
, 'r'},
200 'r', NULL
, N_("Generate relocateable output"), TWO_DASHES
},
201 { {NULL
, no_argument
, NULL
, '\0'},
202 'i', NULL
, NULL
, ONE_DASH
},
203 { {"just-symbols", required_argument
, NULL
, 'R'},
204 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
206 { {"strip-all", no_argument
, NULL
, 's'},
207 's', NULL
, N_("Strip all symbols"), TWO_DASHES
},
208 { {"strip-debug", no_argument
, NULL
, 'S'},
209 'S', NULL
, N_("Strip debugging symbols"), TWO_DASHES
},
210 { {"trace", no_argument
, NULL
, 't'},
211 't', NULL
, N_("Trace file opens"), TWO_DASHES
},
212 { {"script", required_argument
, NULL
, 'T'},
213 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES
},
214 { {"undefined", required_argument
, NULL
, 'u'},
215 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES
},
216 { {"Ur", no_argument
, NULL
, OPTION_UR
},
217 '\0', NULL
, N_("Build global constructor/destructor tables"), ONE_DASH
},
218 { {"version", no_argument
, NULL
, OPTION_VERSION
},
219 'v', NULL
, N_("Print version information"), TWO_DASHES
},
220 { {NULL
, no_argument
, NULL
, '\0'},
221 'V', NULL
, N_("Print version and emulation information"), ONE_DASH
},
222 { {"discard-all", no_argument
, NULL
, 'x'},
223 'x', NULL
, N_("Discard all local symbols"), TWO_DASHES
},
224 { {"discard-locals", no_argument
, NULL
, 'X'},
225 'X', NULL
, N_("Discard temporary local symbols"), TWO_DASHES
},
226 { {"trace-symbol", required_argument
, NULL
, 'y'},
227 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES
},
228 { {NULL
, required_argument
, NULL
, '\0'},
229 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH
},
230 { {NULL
, required_argument
, NULL
, '\0'},
231 'z', N_("KEYWORD"), N_("Ignored for Solaris compatibility"), ONE_DASH
},
232 { {"start-group", no_argument
, NULL
, '('},
233 '(', NULL
, N_("Start a group"), TWO_DASHES
},
234 { {"end-group", no_argument
, NULL
, ')'},
235 ')', NULL
, N_("End a group"), TWO_DASHES
},
236 { {"assert", required_argument
, NULL
, OPTION_ASSERT
},
237 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH
},
238 { {"Bdynamic", no_argument
, NULL
, OPTION_CALL_SHARED
},
239 '\0', NULL
, N_("Link against shared libraries"), ONE_DASH
},
240 { {"dy", no_argument
, NULL
, OPTION_CALL_SHARED
},
241 '\0', NULL
, NULL
, ONE_DASH
},
242 { {"call_shared", no_argument
, NULL
, OPTION_CALL_SHARED
},
243 '\0', NULL
, NULL
, ONE_DASH
},
244 { {"Bstatic", no_argument
, NULL
, OPTION_NON_SHARED
},
245 '\0', NULL
, N_("Do not link against shared libraries"), ONE_DASH
},
246 { {"dn", no_argument
, NULL
, OPTION_NON_SHARED
},
247 '\0', NULL
, NULL
, ONE_DASH
},
248 { {"non_shared", no_argument
, NULL
, OPTION_NON_SHARED
},
249 '\0', NULL
, NULL
, ONE_DASH
},
250 { {"static", no_argument
, NULL
, OPTION_NON_SHARED
},
251 '\0', NULL
, NULL
, ONE_DASH
},
252 { {"Bsymbolic", no_argument
, NULL
, OPTION_SYMBOLIC
},
253 '\0', NULL
, N_("Bind global references locally"), ONE_DASH
},
254 { {"check-sections", no_argument
, NULL
, OPTION_CHECK_SECTIONS
},
255 '\0', NULL
, N_("Check section addresses for overlaps (default)"), TWO_DASHES
},
256 { {"no-check-sections", no_argument
, NULL
, OPTION_NO_CHECK_SECTIONS
},
257 '\0', NULL
, N_("Do not check section addresses for overlaps"),
259 { {"cref", no_argument
, NULL
, OPTION_CREF
},
260 '\0', NULL
, N_("Output cross reference table"), TWO_DASHES
},
261 { {"defsym", required_argument
, NULL
, OPTION_DEFSYM
},
262 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES
},
263 { {"dynamic-linker", required_argument
, NULL
, OPTION_DYNAMIC_LINKER
},
264 '\0', N_("PROGRAM"), N_("Set the dynamic linker to use"), TWO_DASHES
},
265 { {"embedded-relocs", no_argument
, NULL
, OPTION_EMBEDDED_RELOCS
},
266 '\0', NULL
, N_("Generate embedded relocs"), TWO_DASHES
},
267 { {"force-exe-suffix", no_argument
, NULL
, OPTION_FORCE_EXE_SUFFIX
},
268 '\0', NULL
, N_("Force generation of file with .exe suffix"), TWO_DASHES
},
269 { {"gc-sections", no_argument
, NULL
, OPTION_GC_SECTIONS
},
270 '\0', NULL
, N_("Remove unused sections (on some targets)"),
272 { {"no-gc-sections", no_argument
, NULL
, OPTION_NO_GC_SECTIONS
},
273 '\0', NULL
, N_("Don't remove unused sections (default)"),
275 { {"help", no_argument
, NULL
, OPTION_HELP
},
276 '\0', NULL
, N_("Print option help"), TWO_DASHES
},
277 { {"Map", required_argument
, NULL
, OPTION_MAP
},
278 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH
},
279 { {"no-keep-memory", no_argument
, NULL
, OPTION_NO_KEEP_MEMORY
},
280 '\0', NULL
, N_("Use less memory and more disk I/O"), TWO_DASHES
},
281 { {"no-warn-mismatch", no_argument
, NULL
, OPTION_NO_WARN_MISMATCH
},
282 '\0', NULL
, N_("Don't warn about mismatched input files"), TWO_DASHES
},
283 { {"no-whole-archive", no_argument
, NULL
, OPTION_NO_WHOLE_ARCHIVE
},
284 '\0', NULL
, N_("Turn off --whole-archive"), TWO_DASHES
},
285 { {"noinhibit-exec", no_argument
, NULL
, OPTION_NOINHIBIT_EXEC
},
286 '\0', NULL
, N_("Create an output file even if errors occur"), TWO_DASHES
},
287 { {"noinhibit_exec", no_argument
, NULL
, OPTION_NOINHIBIT_EXEC
},
288 '\0', NULL
, NULL
, NO_HELP
},
289 { {"oformat", required_argument
, NULL
, OPTION_OFORMAT
},
290 '\0', N_("TARGET"), N_("Specify target of output file"), TWO_DASHES
},
291 { {"qmagic", no_argument
, NULL
, OPTION_IGNORE
},
292 '\0', NULL
, N_("Ignored for Linux compatibility"), ONE_DASH
},
293 { {"relax", no_argument
, NULL
, OPTION_RELAX
},
294 '\0', NULL
, N_("Relax branches on certain targets"), TWO_DASHES
},
295 { {"retain-symbols-file", required_argument
, NULL
,
296 OPTION_RETAIN_SYMBOLS_FILE
},
297 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES
},
298 { {"rpath", required_argument
, NULL
, OPTION_RPATH
},
299 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH
},
300 { {"rpath-link", required_argument
, NULL
, OPTION_RPATH_LINK
},
301 '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH
},
302 { {"shared", no_argument
, NULL
, OPTION_SHARED
},
303 '\0', NULL
, N_("Create a shared library"), ONE_DASH
},
304 { {"Bshareable", no_argument
, NULL
, OPTION_SHARED
}, /* FreeBSD. */
305 '\0', NULL
, NULL
, ONE_DASH
},
306 { {"sort-common", no_argument
, NULL
, OPTION_SORT_COMMON
},
307 '\0', NULL
, N_("Sort common symbols by size"), TWO_DASHES
},
308 { {"sort_common", no_argument
, NULL
, OPTION_SORT_COMMON
},
309 '\0', NULL
, NULL
, NO_HELP
},
310 { {"split-by-file", no_argument
, NULL
, OPTION_SPLIT_BY_FILE
},
311 '\0', NULL
, N_("Split output sections for each file"), TWO_DASHES
},
312 { {"split-by-reloc", required_argument
, NULL
, OPTION_SPLIT_BY_RELOC
},
313 '\0', N_("COUNT"), N_("Split output sections every COUNT relocs"), TWO_DASHES
},
314 { {"stats", no_argument
, NULL
, OPTION_STATS
},
315 '\0', NULL
, N_("Print memory usage statistics"), TWO_DASHES
},
316 { {"task-link", required_argument
, NULL
, OPTION_TASK_LINK
},
317 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES
},
318 { {"traditional-format", no_argument
, NULL
, OPTION_TRADITIONAL_FORMAT
},
319 '\0', NULL
, N_("Use same format as native linker"), TWO_DASHES
},
320 { {"Tbss", required_argument
, NULL
, OPTION_TBSS
},
321 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH
},
322 { {"Tdata", required_argument
, NULL
, OPTION_TDATA
},
323 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH
},
324 { {"Ttext", required_argument
, NULL
, OPTION_TTEXT
},
325 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH
},
326 { {"verbose", no_argument
, NULL
, OPTION_VERBOSE
},
327 '\0', NULL
, N_("Output lots of information during link"), TWO_DASHES
},
328 { {"dll-verbose", no_argument
, NULL
, OPTION_VERBOSE
}, /* Linux. */
329 '\0', NULL
, NULL
, NO_HELP
},
330 { {"version-script", required_argument
, NULL
, OPTION_VERSION_SCRIPT
},
331 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES
},
332 { {"version-exports-section", required_argument
, NULL
,
333 OPTION_VERSION_EXPORTS_SECTION
},
334 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using SYMBOL as the version."),
336 { {"warn-common", no_argument
, NULL
, OPTION_WARN_COMMON
},
337 '\0', NULL
, N_("Warn about duplicate common symbols"), TWO_DASHES
},
338 { {"warn-constructors", no_argument
, NULL
, OPTION_WARN_CONSTRUCTORS
},
339 '\0', NULL
, N_("Warn if global constructors/destructors are seen"),
341 { {"warn-multiple-gp", no_argument
, NULL
, OPTION_WARN_MULTIPLE_GP
},
342 '\0', NULL
, N_("Warn if the multiple GP values are used"), TWO_DASHES
},
343 { {"warn-once", no_argument
, NULL
, OPTION_WARN_ONCE
},
344 '\0', NULL
, N_("Warn only once per undefined symbol"), TWO_DASHES
},
345 { {"warn-section-align", no_argument
, NULL
, OPTION_WARN_SECTION_ALIGN
},
346 '\0', NULL
, N_("Warn if start of section changes due to alignment"),
348 { {"whole-archive", no_argument
, NULL
, OPTION_WHOLE_ARCHIVE
},
349 '\0', NULL
, N_("Include all objects from following archives"), TWO_DASHES
},
350 { {"wrap", required_argument
, NULL
, OPTION_WRAP
},
351 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES
}
354 #define OPTION_COUNT ((int) (sizeof ld_options / sizeof ld_options[0]))
357 parse_args (argc
, argv
)
363 char *default_dirlist
= NULL
;
364 char shortopts
[OPTION_COUNT
* 3 + 2];
365 struct option longopts
[OPTION_COUNT
+ 1];
368 /* Starting the short option string with '-' is for programs that
369 expect options and other ARGV-elements in any order and that care about
370 the ordering of the two. We describe each non-option ARGV-element
371 as if it were the argument of an option with character code 1. */
375 for (i
= 0; i
< OPTION_COUNT
; i
++)
377 if (ld_options
[i
].shortopt
!= '\0')
379 shortopts
[is
] = ld_options
[i
].shortopt
;
381 if (ld_options
[i
].opt
.has_arg
== required_argument
382 || ld_options
[i
].opt
.has_arg
== optional_argument
)
386 if (ld_options
[i
].opt
.has_arg
== optional_argument
)
393 if (ld_options
[i
].opt
.name
!= NULL
)
395 longopts
[il
] = ld_options
[i
].opt
;
399 shortopts
[is
] = '\0';
400 longopts
[il
].name
= NULL
;
402 /* The -G option is ambiguous on different platforms. Sometimes it
403 specifies the largest data size to put into the small data
404 section. Sometimes it is equivalent to --shared. Unfortunately,
405 the first form takes an argument, while the second does not.
407 We need to permit the --shared form because on some platforms,
408 such as Solaris, gcc -shared will pass -G to the linker.
410 To permit either usage, we look through the argument list. If we
411 find -G not followed by a number, we change it into --shared.
412 This will work for most normal cases. */
413 for (i
= 1; i
< argc
; i
++)
414 if (strcmp (argv
[i
], "-G") == 0
416 || ! isdigit ((unsigned char) argv
[i
+ 1][0])))
417 argv
[i
] = (char *) "--shared";
419 /* Because we permit long options to start with a single dash, and
420 we have a --library option, and the -l option is conventionally
421 used with an immediately following argument, we can have bad
422 results if somebody tries to use -l with a library whose name
423 happens to start with "ibrary", as in -li. We avoid problems by
424 simply turning -l into --library. This means that users will
425 have to use two dashes in order to use --library, which is OK
426 since that's how it is documented.
428 FIXME: It's possible that this problem can arise for other short
429 options as well, although the user does always have the recourse
430 of adding a space between the option and the argument. */
431 for (i
= 1; i
< argc
; i
++)
433 if (argv
[i
][0] == '-'
435 && argv
[i
][2] != '\0')
439 n
= (char *) xmalloc (strlen (argv
[i
]) + 20);
440 sprintf (n
, "--library=%s", argv
[i
] + 2);
451 /* Using last_optind lets us avoid calling ldemul_parse_args
452 multiple times on a single option, which would lead to
453 confusion in the internal static variables maintained by
454 getopt. This could otherwise happen for an argument like
455 -nx, in which the -n is parsed as a single option, and we
456 loop around to pick up the -x. */
457 if (optind
!= last_optind
)
459 if (ldemul_parse_args (argc
, argv
))
461 last_optind
= optind
;
464 /* getopt_long_only is like getopt_long, but '-' as well as '--'
465 can indicate a long option. */
466 optc
= getopt_long_only (argc
, argv
, shortopts
, longopts
, &longind
);
474 case 1: /* File name. */
475 lang_add_input_file (optarg
, lang_input_file_is_file_enum
,
482 /* For HP/UX compatibility. Actually -a shared should mean
483 ``use only shared libraries'' but, then, we don't
484 currently support shared libraries on HP/UX anyhow. */
485 if (strcmp (optarg
, "archive") == 0)
486 config
.dynamic_link
= false;
487 else if (strcmp (optarg
, "shared") == 0
488 || strcmp (optarg
, "default") == 0)
489 config
.dynamic_link
= true;
491 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg
);
494 /* FIXME: We just ignore these, but we should handle them. */
495 if (strcmp (optarg
, "definitions") == 0)
497 else if (strcmp (optarg
, "nodefinitions") == 0)
499 else if (strcmp (optarg
, "nosymbolic") == 0)
501 else if (strcmp (optarg
, "pure-text") == 0)
504 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg
);
507 ldfile_add_arch (optarg
);
510 lang_add_target (optarg
);
513 ldfile_open_command_file (optarg
);
514 parser_input
= input_mri_script
;
517 case OPTION_CALL_SHARED
:
518 config
.dynamic_link
= true;
520 case OPTION_NON_SHARED
:
521 config
.dynamic_link
= false;
524 command_line
.cref
= true;
525 link_info
.notice_all
= true;
528 command_line
.force_common_definition
= true;
532 lex_redirect (optarg
);
533 parser_input
= input_defsym
;
539 case OPTION_DYNAMIC_LINKER
:
540 command_line
.interpreter
= optarg
;
543 command_line
.endian
= ENDIAN_BIG
;
546 command_line
.endian
= ENDIAN_LITTLE
;
548 case OPTION_EMBEDDED_RELOCS
:
549 command_line
.embedded_relocs
= true;
551 case OPTION_EXPORT_DYNAMIC
:
552 case 'E': /* HP/UX compatibility. */
553 command_line
.export_dynamic
= true;
556 lang_add_entry (optarg
, true);
559 if (command_line
.auxiliary_filters
== NULL
)
561 command_line
.auxiliary_filters
=
562 (char **) xmalloc (2 * sizeof (char *));
563 command_line
.auxiliary_filters
[0] = optarg
;
564 command_line
.auxiliary_filters
[1] = NULL
;
572 for (p
= command_line
.auxiliary_filters
; *p
!= NULL
; p
++)
574 command_line
.auxiliary_filters
=
575 (char **) xrealloc (command_line
.auxiliary_filters
,
576 (c
+ 2) * sizeof (char *));
577 command_line
.auxiliary_filters
[c
] = optarg
;
578 command_line
.auxiliary_filters
[c
+ 1] = NULL
;
582 command_line
.filter_shlib
= optarg
;
584 case OPTION_FORCE_EXE_SUFFIX
:
585 command_line
.force_exe_suffix
= true;
590 g_switch_value
= strtoul (optarg
, &end
, 0);
592 einfo (_("%P%F: invalid number `%s'\n"), optarg
);
598 case OPTION_GC_SECTIONS
:
599 command_line
.gc_sections
= true;
606 ldfile_add_library_path (optarg
, true);
609 lang_add_input_file (optarg
, lang_input_file_is_l_enum
,
613 config
.map_filename
= "-";
616 /* Ignore. Was handled in a pre-parse. */
619 config
.map_filename
= optarg
;
622 config
.text_read_only
= false;
623 config
.magic_demand_paged
= false;
624 config
.dynamic_link
= false;
627 config
.magic_demand_paged
= false;
628 config
.dynamic_link
= false;
630 case OPTION_NO_GC_SECTIONS
:
631 command_line
.gc_sections
= false;
633 case OPTION_NO_KEEP_MEMORY
:
634 link_info
.keep_memory
= false;
636 case OPTION_NO_WARN_MISMATCH
:
637 command_line
.warn_mismatch
= false;
639 case OPTION_NOINHIBIT_EXEC
:
640 force_make_executable
= true;
642 case OPTION_NO_WHOLE_ARCHIVE
:
643 whole_archive
= false;
646 /* FIXME "-O<non-digits> <value>" used to set the address of
647 section <non-digits>. Was this for compatibility with
648 something, or can we create a new option to do that
649 (with a syntax similar to -defsym)?
650 getopt can't handle two args to an option without kludges. */
652 /* Enable optimizations of output files. */
653 link_info
.optimize
= strtoul (optarg
, NULL
, 0) ? true : false;
656 lang_add_output (optarg
, 0);
659 lang_add_output_format (optarg
, (char *) NULL
, (char *) NULL
, 0);
663 link_info
.relocateable
= true;
664 config
.build_constructors
= false;
665 config
.magic_demand_paged
= false;
666 config
.text_read_only
= false;
667 config
.dynamic_link
= false;
670 /* The GNU linker traditionally uses -R to mean to include
671 only the symbols from a file. The Solaris linker uses -R
672 to set the path used by the runtime linker to find
673 libraries. This is the GNU linker -rpath argument. We
674 try to support both simultaneously by checking the file
675 named. If it is a directory, rather than a regular file,
676 we assume -rpath was meant. */
680 if (stat (optarg
, &s
) >= 0
681 && ! S_ISDIR (s
.st_mode
))
683 lang_add_input_file (optarg
,
684 lang_input_file_is_symbols_only_enum
,
691 if (command_line
.rpath
== NULL
)
692 command_line
.rpath
= buystring (optarg
);
695 size_t rpath_len
= strlen (command_line
.rpath
);
696 size_t optarg_len
= strlen (optarg
);
698 char *cp
= command_line
.rpath
;
700 /* First see whether OPTARG is already in the path. */
704 while (optarg
[idx
] != '\0' && optarg
[idx
] == cp
[idx
])
706 if (optarg
[idx
] == '\0'
707 && (cp
[idx
] == '\0' || cp
[idx
] == ':'))
712 cp
= strchr (cp
, ':');
720 buf
= xmalloc (rpath_len
+ optarg_len
+ 2);
721 sprintf (buf
, "%s:%s", command_line
.rpath
, optarg
);
722 free (command_line
.rpath
);
723 command_line
.rpath
= buf
;
727 case OPTION_RPATH_LINK
:
728 if (command_line
.rpath_link
== NULL
)
729 command_line
.rpath_link
= buystring (optarg
);
734 buf
= xmalloc (strlen (command_line
.rpath_link
)
737 sprintf (buf
, "%s:%s", command_line
.rpath_link
, optarg
);
738 free (command_line
.rpath_link
);
739 command_line
.rpath_link
= buf
;
743 command_line
.relax
= true;
745 case OPTION_RETAIN_SYMBOLS_FILE
:
746 add_keepsyms_file (optarg
);
749 link_info
.strip
= strip_debugger
;
752 link_info
.strip
= strip_all
;
755 if (config
.has_shared
)
756 link_info
.shared
= true;
758 einfo (_("%P%F: -shared not supported\n"));
760 case 'h': /* Used on Solaris. */
762 command_line
.soname
= optarg
;
764 case OPTION_SORT_COMMON
:
765 config
.sort_common
= true;
770 case OPTION_SYMBOLIC
:
771 link_info
.symbolic
= true;
777 ldfile_open_command_file (optarg
);
778 parser_input
= input_script
;
782 set_section_start (".bss", optarg
);
785 set_section_start (".data", optarg
);
788 set_section_start (".text", optarg
);
790 case OPTION_TRADITIONAL_FORMAT
:
791 link_info
.traditional_format
= true;
793 case OPTION_TASK_LINK
:
794 link_info
.task_link
= true;
795 /* Fall through - do an implied -r option. */
797 link_info
.relocateable
= true;
798 config
.build_constructors
= true;
799 config
.magic_demand_paged
= false;
800 config
.text_read_only
= false;
801 config
.dynamic_link
= false;
804 ldlang_add_undef (optarg
);
808 version_printed
= true;
809 trace_file_tries
= true;
813 version_printed
= true;
817 version_printed
= true;
820 /* This output is intended to follow the GNU standards document. */
821 printf ("GNU ld %s\n", ld_program_version
);
822 printf (_("Copyright 1997 Free Software Foundation, Inc.\n"));
824 This program is free software; you may redistribute it under the terms of\n\
825 the GNU General Public License. This program has absolutely no warranty.\n"));
827 ld_emulation_xfer_type
**ptr
= ld_emulations
;
829 printf (_(" Supported emulations:\n"));
832 printf (" %s\n", (*ptr
)->emulation_name
);
838 case OPTION_VERSION_SCRIPT
:
839 /* This option indicates a small script that only specifies
840 version information. Read it, but don't assume that
841 we've seen a linker script. */
843 boolean hold_had_script
;
845 hold_had_script
= had_script
;
846 ldfile_open_command_file (optarg
);
847 had_script
= hold_had_script
;
848 parser_input
= input_version_script
;
852 case OPTION_VERSION_EXPORTS_SECTION
:
853 /* This option records a version symbol to be applied to the
854 symbols listed for export to be found in the object files
855 .exports sections. */
856 command_line
.version_exports_section
= optarg
;
858 case OPTION_WARN_COMMON
:
859 config
.warn_common
= true;
861 case OPTION_WARN_CONSTRUCTORS
:
862 config
.warn_constructors
= true;
864 case OPTION_WARN_MULTIPLE_GP
:
865 config
.warn_multiple_gp
= true;
867 case OPTION_WARN_ONCE
:
868 config
.warn_once
= true;
870 case OPTION_WARN_SECTION_ALIGN
:
871 config
.warn_section_align
= true;
873 case OPTION_WHOLE_ARCHIVE
:
874 whole_archive
= true;
880 link_info
.discard
= discard_l
;
883 link_info
.discard
= discard_all
;
886 if (strncmp (optarg
, "P,", 2) == 0)
888 default_dirlist
= xstrdup (optarg
);
894 /* We accept and ignore this option for Solaris
895 compatibility. Actually, on Solaris, optarg is not
896 ignored. Someday we should handle it correctly. FIXME. */
898 case OPTION_SPLIT_BY_RELOC
:
899 config
.split_by_reloc
= atoi (optarg
);
901 case OPTION_SPLIT_BY_FILE
:
902 config
.split_by_file
= true;
904 case OPTION_CHECK_SECTIONS
:
905 command_line
.check_section_addresses
= true;
907 case OPTION_NO_CHECK_SECTIONS
:
908 command_line
.check_section_addresses
= false;
914 _("%s: may not nest groups (--help for usage)\n"),
925 _("%s: group ended before it began (--help for usage)\n"),
939 if (default_dirlist
!= NULL
)
940 set_default_dirlist (default_dirlist
);
944 /* Add the (colon-separated) elements of DIRLIST_PTR to the
945 library search path. */
948 set_default_dirlist (dirlist_ptr
)
955 p
= strchr (dirlist_ptr
, PATH_SEPARATOR
);
958 if (*dirlist_ptr
!= '\0')
959 ldfile_add_library_path (dirlist_ptr
, true);
967 set_section_start (sect
, valstr
)
971 unsigned long val
= strtoul (valstr
, &end
, 16);
973 einfo (_("%P%F: invalid hex number `%s'\n"), valstr
);
974 lang_section_start (sect
, exp_intop (val
));
977 /* Print help messages for the options. */
983 const char **targets
, **pp
;
985 printf (_("Usage: %s [options] file...\n"), program_name
);
987 printf (_("Options:\n"));
988 for (i
= 0; i
< OPTION_COUNT
; i
++)
990 if (ld_options
[i
].doc
!= NULL
)
1004 if (ld_options
[j
].shortopt
!= '\0'
1005 && ld_options
[j
].control
!= NO_HELP
)
1007 printf ("%s-%c", comma
? ", " : "", ld_options
[j
].shortopt
);
1008 len
+= (comma
? 2 : 0) + 2;
1009 if (ld_options
[j
].arg
!= NULL
)
1011 if (ld_options
[j
].opt
.has_arg
!= optional_argument
)
1016 printf ("%s", _(ld_options
[j
].arg
));
1017 len
+= strlen (_(ld_options
[j
].arg
));
1023 while (j
< OPTION_COUNT
&& ld_options
[j
].doc
== NULL
);
1028 if (ld_options
[j
].opt
.name
!= NULL
1029 && ld_options
[j
].control
!= NO_HELP
)
1033 ld_options
[j
].control
== TWO_DASHES
? "-" : "",
1034 ld_options
[j
].opt
.name
);
1035 len
+= ((comma
? 2 : 0)
1037 + (ld_options
[j
].control
== TWO_DASHES
? 1 : 0)
1038 + strlen (ld_options
[j
].opt
.name
));
1039 if (ld_options
[j
].arg
!= NULL
)
1041 printf (" %s", _(ld_options
[j
].arg
));
1042 len
+= 1 + strlen (_(ld_options
[j
].arg
));
1048 while (j
< OPTION_COUNT
&& ld_options
[j
].doc
== NULL
);
1056 for (; len
< 30; len
++)
1059 printf ("%s\n", _(ld_options
[i
].doc
));
1063 /* xgettext:c-format */
1064 printf (_("%s: supported targets:"), program_name
);
1065 targets
= bfd_target_list ();
1066 for (pp
= targets
; *pp
!= NULL
; pp
++)
1067 printf (" %s", *pp
);
1071 /* xgettext:c-format */
1072 printf (_("%s: supported emulations: "), program_name
);
1073 ldemul_list_emulations (stdout
);
1076 /* xgettext:c-format */
1077 printf (_("%s: emulation specific options:\n"), program_name
);
1078 ldemul_list_emulation_options (stdout
);
1081 printf (_("\nReport bugs to bug-gnu-utils@gnu.org\n"));