1 /* Parse options for the GNU linker.
2 Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000
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 int is_num
PARAMS ((const char *, int, int, int));
59 static void set_default_dirlist
PARAMS ((char *dirlist_ptr
));
60 static void set_section_start
PARAMS ((char *sect
, char *valstr
));
61 static void help
PARAMS ((void));
63 /* Non-zero if we are processing a --defsym from the command line. */
64 int parsing_defsym
= 0;
66 /* Codes used for the long options with no short synonyms. 150 isn't
67 special; it's just an arbitrary non-ASCII char value. */
69 #define OPTION_ASSERT 150
70 #define OPTION_CALL_SHARED (OPTION_ASSERT + 1)
71 #define OPTION_CREF (OPTION_CALL_SHARED + 1)
72 #define OPTION_DEFSYM (OPTION_CREF + 1)
73 #define OPTION_DEMANGLE (OPTION_DEFSYM + 1)
74 #define OPTION_DYNAMIC_LINKER (OPTION_DEMANGLE + 1)
75 #define OPTION_EB (OPTION_DYNAMIC_LINKER + 1)
76 #define OPTION_EL (OPTION_EB + 1)
77 #define OPTION_EMBEDDED_RELOCS (OPTION_EL + 1)
78 #define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1)
79 #define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1)
80 #define OPTION_IGNORE (OPTION_HELP + 1)
81 #define OPTION_MAP (OPTION_IGNORE + 1)
82 #define OPTION_NO_DEMANGLE (OPTION_MAP + 1)
83 #define OPTION_NO_KEEP_MEMORY (OPTION_NO_DEMANGLE + 1)
84 #define OPTION_NO_WARN_MISMATCH (OPTION_NO_KEEP_MEMORY + 1)
85 #define OPTION_NOINHIBIT_EXEC (OPTION_NO_WARN_MISMATCH + 1)
86 #define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1)
87 #define OPTION_NO_WHOLE_ARCHIVE (OPTION_NON_SHARED + 1)
88 #define OPTION_OFORMAT (OPTION_NO_WHOLE_ARCHIVE + 1)
89 #define OPTION_RELAX (OPTION_OFORMAT + 1)
90 #define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1)
91 #define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1)
92 #define OPTION_RPATH_LINK (OPTION_RPATH + 1)
93 #define OPTION_SHARED (OPTION_RPATH_LINK + 1)
94 #define OPTION_SONAME (OPTION_SHARED + 1)
95 #define OPTION_SORT_COMMON (OPTION_SONAME + 1)
96 #define OPTION_STATS (OPTION_SORT_COMMON + 1)
97 #define OPTION_SYMBOLIC (OPTION_STATS + 1)
98 #define OPTION_TASK_LINK (OPTION_SYMBOLIC + 1)
99 #define OPTION_TBSS (OPTION_TASK_LINK + 1)
100 #define OPTION_TDATA (OPTION_TBSS + 1)
101 #define OPTION_TTEXT (OPTION_TDATA + 1)
102 #define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1)
103 #define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1)
104 #define OPTION_VERBOSE (OPTION_UR + 1)
105 #define OPTION_VERSION (OPTION_VERBOSE + 1)
106 #define OPTION_VERSION_SCRIPT (OPTION_VERSION + 1)
107 #define OPTION_VERSION_EXPORTS_SECTION (OPTION_VERSION_SCRIPT + 1)
108 #define OPTION_WARN_COMMON (OPTION_VERSION_EXPORTS_SECTION + 1)
109 #define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1)
110 #define OPTION_WARN_MULTIPLE_GP (OPTION_WARN_CONSTRUCTORS + 1)
111 #define OPTION_WARN_ONCE (OPTION_WARN_MULTIPLE_GP + 1)
112 #define OPTION_WARN_SECTION_ALIGN (OPTION_WARN_ONCE + 1)
113 #define OPTION_SPLIT_BY_RELOC (OPTION_WARN_SECTION_ALIGN + 1)
114 #define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
115 #define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
116 #define OPTION_WRAP (OPTION_WHOLE_ARCHIVE + 1)
117 #define OPTION_FORCE_EXE_SUFFIX (OPTION_WRAP + 1)
118 #define OPTION_GC_SECTIONS (OPTION_FORCE_EXE_SUFFIX + 1)
119 #define OPTION_NO_GC_SECTIONS (OPTION_GC_SECTIONS + 1)
120 #define OPTION_CHECK_SECTIONS (OPTION_NO_GC_SECTIONS + 1)
121 #define OPTION_NO_CHECK_SECTIONS (OPTION_CHECK_SECTIONS + 1)
122 #define OPTION_MPC860C0 (OPTION_NO_CHECK_SECTIONS + 1)
123 #define OPTION_NO_UNDEFINED (OPTION_MPC860C0 + 1)
124 #define OPTION_INIT (OPTION_NO_UNDEFINED + 1)
125 #define OPTION_FINI (OPTION_INIT + 1)
127 /* The long options. This structure is used for both the option
128 parsing and the help text. */
132 /* The long option information. */
134 /* The short option with the same meaning ('\0' if none). */
136 /* The name of the argument (NULL if none). */
138 /* The documentation string. If this is NULL, this is a synonym for
139 the previous option. */
143 /* Use one dash before long option name. */
145 /* Use two dashes before long option name. */
147 /* Don't mention this option in --help output. */
152 static const struct ld_option ld_options
[] =
154 { {NULL
, required_argument
, NULL
, '\0'},
155 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
157 { {"architecture", required_argument
, NULL
, 'A'},
158 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES
},
159 { {"format", required_argument
, NULL
, 'b'},
160 'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES
},
161 { {"mri-script", required_argument
, NULL
, 'c'},
162 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES
},
163 { {"dc", no_argument
, NULL
, 'd'},
164 'd', NULL
, N_("Force common symbols to be defined"), ONE_DASH
},
165 { {"dp", no_argument
, NULL
, 'd'},
166 '\0', NULL
, NULL
, ONE_DASH
},
167 { {"entry", required_argument
, NULL
, 'e'},
168 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES
},
169 { {"export-dynamic", no_argument
, NULL
, OPTION_EXPORT_DYNAMIC
},
170 'E', NULL
, N_("Export all dynamic symbols"), TWO_DASHES
},
171 { {"EB", no_argument
, NULL
, OPTION_EB
},
172 '\0', NULL
, N_("Link big-endian objects"), ONE_DASH
},
173 { {"EL", no_argument
, NULL
, OPTION_EL
},
174 '\0', NULL
, N_("Link little-endian objects"), ONE_DASH
},
175 { {"auxiliary", required_argument
, NULL
, 'f'},
176 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
178 { {"filter", required_argument
, NULL
, 'F'},
179 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES
},
180 { {NULL
, no_argument
, NULL
, '\0'},
181 'g', NULL
, N_("Ignored"), ONE_DASH
},
182 { {"gpsize", required_argument
, NULL
, 'G'},
183 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
185 { {"soname", required_argument
, NULL
, OPTION_SONAME
},
186 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH
},
187 { {"library", required_argument
, NULL
, 'l'},
188 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES
},
189 { {"library-path", required_argument
, NULL
, 'L'},
190 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES
},
191 { {NULL
, required_argument
, NULL
, '\0'},
192 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH
},
193 { {"print-map", no_argument
, NULL
, 'M'},
194 'M', NULL
, N_("Print map file on standard output"), TWO_DASHES
},
195 { {"nmagic", no_argument
, NULL
, 'n'},
196 'n', NULL
, N_("Do not page align data"), TWO_DASHES
},
197 { {"omagic", no_argument
, NULL
, 'N'},
198 'N', NULL
, N_("Do not page align data, do not make text readonly"),
200 { {"output", required_argument
, NULL
, 'o'},
201 'o', N_("FILE"), N_("Set output file name"), TWO_DASHES
},
202 { {NULL
, required_argument
, NULL
, '\0'},
203 'O', NULL
, N_("Optimize output file"), ONE_DASH
},
204 { {"Qy", no_argument
, NULL
, OPTION_IGNORE
},
205 '\0', NULL
, N_("Ignored for SVR4 compatibility"), ONE_DASH
},
206 { {"emit-relocs", no_argument
, NULL
, 'q'},
207 'q', NULL
, "Generate relocations in final output", TWO_DASHES
},
208 { {"relocateable", no_argument
, NULL
, 'r'},
209 'r', NULL
, N_("Generate relocateable output"), TWO_DASHES
},
210 { {NULL
, no_argument
, NULL
, '\0'},
211 'i', NULL
, NULL
, ONE_DASH
},
212 { {"just-symbols", required_argument
, NULL
, 'R'},
213 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
215 { {"strip-all", no_argument
, NULL
, 's'},
216 's', NULL
, N_("Strip all symbols"), TWO_DASHES
},
217 { {"strip-debug", no_argument
, NULL
, 'S'},
218 'S', NULL
, N_("Strip debugging symbols"), TWO_DASHES
},
219 { {"trace", no_argument
, NULL
, 't'},
220 't', NULL
, N_("Trace file opens"), TWO_DASHES
},
221 { {"script", required_argument
, NULL
, 'T'},
222 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES
},
223 { {"undefined", required_argument
, NULL
, 'u'},
224 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES
},
225 { {"Ur", no_argument
, NULL
, OPTION_UR
},
226 '\0', NULL
, N_("Build global constructor/destructor tables"), ONE_DASH
},
227 { {"version", no_argument
, NULL
, OPTION_VERSION
},
228 'v', NULL
, N_("Print version information"), TWO_DASHES
},
229 { {NULL
, no_argument
, NULL
, '\0'},
230 'V', NULL
, N_("Print version and emulation information"), ONE_DASH
},
231 { {"discard-all", no_argument
, NULL
, 'x'},
232 'x', NULL
, N_("Discard all local symbols"), TWO_DASHES
},
233 { {"discard-locals", no_argument
, NULL
, 'X'},
234 'X', NULL
, N_("Discard temporary local symbols"), TWO_DASHES
},
235 { {"trace-symbol", required_argument
, NULL
, 'y'},
236 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES
},
237 { {NULL
, required_argument
, NULL
, '\0'},
238 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH
},
239 { {NULL
, required_argument
, NULL
, '\0'},
240 'z', N_("KEYWORD"), N_("Ignored for Solaris compatibility"), ONE_DASH
},
241 { {"start-group", no_argument
, NULL
, '('},
242 '(', NULL
, N_("Start a group"), TWO_DASHES
},
243 { {"end-group", no_argument
, NULL
, ')'},
244 ')', NULL
, N_("End a group"), TWO_DASHES
},
245 { {"assert", required_argument
, NULL
, OPTION_ASSERT
},
246 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH
},
247 { {"Bdynamic", no_argument
, NULL
, OPTION_CALL_SHARED
},
248 '\0', NULL
, N_("Link against shared libraries"), ONE_DASH
},
249 { {"dy", no_argument
, NULL
, OPTION_CALL_SHARED
},
250 '\0', NULL
, NULL
, ONE_DASH
},
251 { {"call_shared", no_argument
, NULL
, OPTION_CALL_SHARED
},
252 '\0', NULL
, NULL
, ONE_DASH
},
253 { {"Bstatic", no_argument
, NULL
, OPTION_NON_SHARED
},
254 '\0', NULL
, N_("Do not link against shared libraries"), ONE_DASH
},
255 { {"dn", no_argument
, NULL
, OPTION_NON_SHARED
},
256 '\0', NULL
, NULL
, ONE_DASH
},
257 { {"non_shared", no_argument
, NULL
, OPTION_NON_SHARED
},
258 '\0', NULL
, NULL
, ONE_DASH
},
259 { {"static", no_argument
, NULL
, OPTION_NON_SHARED
},
260 '\0', NULL
, NULL
, ONE_DASH
},
261 { {"Bsymbolic", no_argument
, NULL
, OPTION_SYMBOLIC
},
262 '\0', NULL
, N_("Bind global references locally"), ONE_DASH
},
263 { {"check-sections", no_argument
, NULL
, OPTION_CHECK_SECTIONS
},
264 '\0', NULL
, N_("Check section addresses for overlaps (default)"), TWO_DASHES
},
265 { {"no-check-sections", no_argument
, NULL
, OPTION_NO_CHECK_SECTIONS
},
266 '\0', NULL
, N_("Do not check section addresses for overlaps"),
268 { {"cref", no_argument
, NULL
, OPTION_CREF
},
269 '\0', NULL
, N_("Output cross reference table"), TWO_DASHES
},
270 { {"defsym", required_argument
, NULL
, OPTION_DEFSYM
},
271 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES
},
272 { {"demangle", no_argument
, NULL
, OPTION_DEMANGLE
},
273 '\0', NULL
, N_("Demangle symbol names"), TWO_DASHES
},
274 { {"dynamic-linker", required_argument
, NULL
, OPTION_DYNAMIC_LINKER
},
275 '\0', N_("PROGRAM"), N_("Set the dynamic linker to use"), TWO_DASHES
},
276 { {"embedded-relocs", no_argument
, NULL
, OPTION_EMBEDDED_RELOCS
},
277 '\0', NULL
, N_("Generate embedded relocs"), TWO_DASHES
},
278 { {"fini", required_argument
, NULL
, OPTION_FINI
},
279 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH
},
280 { {"force-exe-suffix", no_argument
, NULL
, OPTION_FORCE_EXE_SUFFIX
},
281 '\0', NULL
, N_("Force generation of file with .exe suffix"), TWO_DASHES
},
282 { {"gc-sections", no_argument
, NULL
, OPTION_GC_SECTIONS
},
283 '\0', NULL
, N_("Remove unused sections (on some targets)"),
285 { {"no-gc-sections", no_argument
, NULL
, OPTION_NO_GC_SECTIONS
},
286 '\0', NULL
, N_("Don't remove unused sections (default)"),
288 { {"help", no_argument
, NULL
, OPTION_HELP
},
289 '\0', NULL
, N_("Print option help"), TWO_DASHES
},
290 { {"init", required_argument
, NULL
, OPTION_INIT
},
291 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH
},
292 { {"Map", required_argument
, NULL
, OPTION_MAP
},
293 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH
},
294 { {"no-demangle", no_argument
, NULL
, OPTION_NO_DEMANGLE
},
295 '\0', NULL
, N_("Do not demangle symbol names"), TWO_DASHES
},
296 { {"no-keep-memory", no_argument
, NULL
, OPTION_NO_KEEP_MEMORY
},
297 '\0', NULL
, N_("Use less memory and more disk I/O"), TWO_DASHES
},
298 { {"no-undefined", no_argument
, NULL
, OPTION_NO_UNDEFINED
},
299 '\0', NULL
, N_("Allow no undefined symbols"), TWO_DASHES
},
300 { {"no-warn-mismatch", no_argument
, NULL
, OPTION_NO_WARN_MISMATCH
},
301 '\0', NULL
, N_("Don't warn about mismatched input files"), TWO_DASHES
},
302 { {"no-whole-archive", no_argument
, NULL
, OPTION_NO_WHOLE_ARCHIVE
},
303 '\0', NULL
, N_("Turn off --whole-archive"), TWO_DASHES
},
304 { {"noinhibit-exec", no_argument
, NULL
, OPTION_NOINHIBIT_EXEC
},
305 '\0', NULL
, N_("Create an output file even if errors occur"), TWO_DASHES
},
306 { {"noinhibit_exec", no_argument
, NULL
, OPTION_NOINHIBIT_EXEC
},
307 '\0', NULL
, NULL
, NO_HELP
},
308 { {"oformat", required_argument
, NULL
, OPTION_OFORMAT
},
309 '\0', N_("TARGET"), N_("Specify target of output file"), TWO_DASHES
},
310 { {"qmagic", no_argument
, NULL
, OPTION_IGNORE
},
311 '\0', NULL
, N_("Ignored for Linux compatibility"), ONE_DASH
},
312 { {"relax", no_argument
, NULL
, OPTION_RELAX
},
313 '\0', NULL
, N_("Relax branches on certain targets"), TWO_DASHES
},
314 { {"retain-symbols-file", required_argument
, NULL
,
315 OPTION_RETAIN_SYMBOLS_FILE
},
316 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES
},
317 { {"rpath", required_argument
, NULL
, OPTION_RPATH
},
318 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH
},
319 { {"rpath-link", required_argument
, NULL
, OPTION_RPATH_LINK
},
320 '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH
},
321 { {"shared", no_argument
, NULL
, OPTION_SHARED
},
322 '\0', NULL
, N_("Create a shared library"), ONE_DASH
},
323 { {"Bshareable", no_argument
, NULL
, OPTION_SHARED
}, /* FreeBSD. */
324 '\0', NULL
, NULL
, ONE_DASH
},
325 { {"sort-common", no_argument
, NULL
, OPTION_SORT_COMMON
},
326 '\0', NULL
, N_("Sort common symbols by size"), TWO_DASHES
},
327 { {"sort_common", no_argument
, NULL
, OPTION_SORT_COMMON
},
328 '\0', NULL
, NULL
, NO_HELP
},
329 { {"split-by-file", no_argument
, NULL
, OPTION_SPLIT_BY_FILE
},
330 '\0', NULL
, N_("Split output sections for each file"), TWO_DASHES
},
331 { {"split-by-reloc", required_argument
, NULL
, OPTION_SPLIT_BY_RELOC
},
332 '\0', N_("COUNT"), N_("Split output sections every COUNT relocs"), TWO_DASHES
},
333 { {"stats", no_argument
, NULL
, OPTION_STATS
},
334 '\0', NULL
, N_("Print memory usage statistics"), TWO_DASHES
},
335 { {"task-link", required_argument
, NULL
, OPTION_TASK_LINK
},
336 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES
},
337 { {"traditional-format", no_argument
, NULL
, OPTION_TRADITIONAL_FORMAT
},
338 '\0', NULL
, N_("Use same format as native linker"), TWO_DASHES
},
339 { {"Tbss", required_argument
, NULL
, OPTION_TBSS
},
340 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH
},
341 { {"Tdata", required_argument
, NULL
, OPTION_TDATA
},
342 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH
},
343 { {"Ttext", required_argument
, NULL
, OPTION_TTEXT
},
344 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH
},
345 { {"verbose", no_argument
, NULL
, OPTION_VERBOSE
},
346 '\0', NULL
, N_("Output lots of information during link"), TWO_DASHES
},
347 { {"dll-verbose", no_argument
, NULL
, OPTION_VERBOSE
}, /* Linux. */
348 '\0', NULL
, NULL
, NO_HELP
},
349 { {"version-script", required_argument
, NULL
, OPTION_VERSION_SCRIPT
},
350 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES
},
351 { {"version-exports-section", required_argument
, NULL
,
352 OPTION_VERSION_EXPORTS_SECTION
},
353 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
355 { {"warn-common", no_argument
, NULL
, OPTION_WARN_COMMON
},
356 '\0', NULL
, N_("Warn about duplicate common symbols"), TWO_DASHES
},
357 { {"warn-constructors", no_argument
, NULL
, OPTION_WARN_CONSTRUCTORS
},
358 '\0', NULL
, N_("Warn if global constructors/destructors are seen"),
360 { {"warn-multiple-gp", no_argument
, NULL
, OPTION_WARN_MULTIPLE_GP
},
361 '\0', NULL
, N_("Warn if the multiple GP values are used"), TWO_DASHES
},
362 { {"warn-once", no_argument
, NULL
, OPTION_WARN_ONCE
},
363 '\0', NULL
, N_("Warn only once per undefined symbol"), TWO_DASHES
},
364 { {"warn-section-align", no_argument
, NULL
, OPTION_WARN_SECTION_ALIGN
},
365 '\0', NULL
, N_("Warn if start of section changes due to alignment"),
367 { {"whole-archive", no_argument
, NULL
, OPTION_WHOLE_ARCHIVE
},
368 '\0', NULL
, N_("Include all objects from following archives"), TWO_DASHES
},
369 { {"wrap", required_argument
, NULL
, OPTION_WRAP
},
370 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES
},
371 { {"mpc860c0", optional_argument
, NULL
, OPTION_MPC860C0
},
372 '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES
}
375 #define OPTION_COUNT ((int) (sizeof ld_options / sizeof ld_options[0]))
377 /* Test STRING for containing a string of digits that form a number
378 between MIN and MAX. The return value is the number or ERR. */
381 is_num (string
, min
, max
, err
)
389 for (; *string
; ++string
)
391 if (! isdigit (*string
))
396 result
= result
* 10 + (*string
- '0');
398 if (result
< min
|| result
> max
)
405 parse_args (argc
, argv
)
411 char *default_dirlist
= NULL
;
412 char shortopts
[OPTION_COUNT
* 3 + 2];
413 struct option longopts
[OPTION_COUNT
+ 1];
416 /* Starting the short option string with '-' is for programs that
417 expect options and other ARGV-elements in any order and that care about
418 the ordering of the two. We describe each non-option ARGV-element
419 as if it were the argument of an option with character code 1. */
423 for (i
= 0; i
< OPTION_COUNT
; i
++)
425 if (ld_options
[i
].shortopt
!= '\0')
427 shortopts
[is
] = ld_options
[i
].shortopt
;
429 if (ld_options
[i
].opt
.has_arg
== required_argument
430 || ld_options
[i
].opt
.has_arg
== optional_argument
)
434 if (ld_options
[i
].opt
.has_arg
== optional_argument
)
441 if (ld_options
[i
].opt
.name
!= NULL
)
443 longopts
[il
] = ld_options
[i
].opt
;
447 shortopts
[is
] = '\0';
448 longopts
[il
].name
= NULL
;
450 /* The -G option is ambiguous on different platforms. Sometimes it
451 specifies the largest data size to put into the small data
452 section. Sometimes it is equivalent to --shared. Unfortunately,
453 the first form takes an argument, while the second does not.
455 We need to permit the --shared form because on some platforms,
456 such as Solaris, gcc -shared will pass -G to the linker.
458 To permit either usage, we look through the argument list. If we
459 find -G not followed by a number, we change it into --shared.
460 This will work for most normal cases. */
461 for (i
= 1; i
< argc
; i
++)
462 if (strcmp (argv
[i
], "-G") == 0
464 || ! isdigit ((unsigned char) argv
[i
+ 1][0])))
465 argv
[i
] = (char *) "--shared";
467 /* Because we permit long options to start with a single dash, and
468 we have a --library option, and the -l option is conventionally
469 used with an immediately following argument, we can have bad
470 results if somebody tries to use -l with a library whose name
471 happens to start with "ibrary", as in -li. We avoid problems by
472 simply turning -l into --library. This means that users will
473 have to use two dashes in order to use --library, which is OK
474 since that's how it is documented.
476 FIXME: It's possible that this problem can arise for other short
477 options as well, although the user does always have the recourse
478 of adding a space between the option and the argument. */
479 for (i
= 1; i
< argc
; i
++)
481 if (argv
[i
][0] == '-'
483 && argv
[i
][2] != '\0')
487 n
= (char *) xmalloc (strlen (argv
[i
]) + 20);
488 sprintf (n
, "--library=%s", argv
[i
] + 2);
499 /* Using last_optind lets us avoid calling ldemul_parse_args
500 multiple times on a single option, which would lead to
501 confusion in the internal static variables maintained by
502 getopt. This could otherwise happen for an argument like
503 -nx, in which the -n is parsed as a single option, and we
504 loop around to pick up the -x. */
505 if (optind
!= last_optind
)
507 if (ldemul_parse_args (argc
, argv
))
509 last_optind
= optind
;
512 /* getopt_long_only is like getopt_long, but '-' as well as '--'
513 can indicate a long option. */
514 optc
= getopt_long_only (argc
, argv
, shortopts
, longopts
, &longind
);
522 _("%s: use the --help option for usage information\n"),
525 case 1: /* File name. */
526 lang_add_input_file (optarg
, lang_input_file_is_file_enum
,
533 /* For HP/UX compatibility. Actually -a shared should mean
534 ``use only shared libraries'' but, then, we don't
535 currently support shared libraries on HP/UX anyhow. */
536 if (strcmp (optarg
, "archive") == 0)
537 config
.dynamic_link
= false;
538 else if (strcmp (optarg
, "shared") == 0
539 || strcmp (optarg
, "default") == 0)
540 config
.dynamic_link
= true;
542 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg
);
545 /* FIXME: We just ignore these, but we should handle them. */
546 if (strcmp (optarg
, "definitions") == 0)
548 else if (strcmp (optarg
, "nodefinitions") == 0)
550 else if (strcmp (optarg
, "nosymbolic") == 0)
552 else if (strcmp (optarg
, "pure-text") == 0)
555 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg
);
558 ldfile_add_arch (optarg
);
561 lang_add_target (optarg
);
564 ldfile_open_command_file (optarg
);
565 parser_input
= input_mri_script
;
568 case OPTION_CALL_SHARED
:
569 config
.dynamic_link
= true;
571 case OPTION_NON_SHARED
:
572 config
.dynamic_link
= false;
575 command_line
.cref
= true;
576 link_info
.notice_all
= true;
579 command_line
.force_common_definition
= true;
583 lex_redirect (optarg
);
584 parser_input
= input_defsym
;
590 case OPTION_DEMANGLE
:
593 case OPTION_DYNAMIC_LINKER
:
594 command_line
.interpreter
= optarg
;
597 command_line
.endian
= ENDIAN_BIG
;
600 command_line
.endian
= ENDIAN_LITTLE
;
602 case OPTION_EMBEDDED_RELOCS
:
603 command_line
.embedded_relocs
= true;
605 case OPTION_EXPORT_DYNAMIC
:
606 case 'E': /* HP/UX compatibility. */
607 command_line
.export_dynamic
= true;
610 lang_add_entry (optarg
, true);
613 if (command_line
.auxiliary_filters
== NULL
)
615 command_line
.auxiliary_filters
=
616 (char **) xmalloc (2 * sizeof (char *));
617 command_line
.auxiliary_filters
[0] = optarg
;
618 command_line
.auxiliary_filters
[1] = NULL
;
626 for (p
= command_line
.auxiliary_filters
; *p
!= NULL
; p
++)
628 command_line
.auxiliary_filters
=
629 (char **) xrealloc (command_line
.auxiliary_filters
,
630 (c
+ 2) * sizeof (char *));
631 command_line
.auxiliary_filters
[c
] = optarg
;
632 command_line
.auxiliary_filters
[c
+ 1] = NULL
;
636 command_line
.filter_shlib
= optarg
;
638 case OPTION_FORCE_EXE_SUFFIX
:
639 command_line
.force_exe_suffix
= true;
644 g_switch_value
= strtoul (optarg
, &end
, 0);
646 einfo (_("%P%F: invalid number `%s'\n"), optarg
);
652 case OPTION_GC_SECTIONS
:
653 command_line
.gc_sections
= true;
660 ldfile_add_library_path (optarg
, true);
663 lang_add_input_file (optarg
, lang_input_file_is_l_enum
,
667 config
.map_filename
= "-";
670 /* Ignore. Was handled in a pre-parse. */
673 config
.map_filename
= optarg
;
676 config
.text_read_only
= false;
677 config
.magic_demand_paged
= false;
678 config
.dynamic_link
= false;
681 config
.magic_demand_paged
= false;
682 config
.dynamic_link
= false;
684 case OPTION_NO_DEMANGLE
:
687 case OPTION_NO_GC_SECTIONS
:
688 command_line
.gc_sections
= false;
690 case OPTION_NO_KEEP_MEMORY
:
691 link_info
.keep_memory
= false;
693 case OPTION_NO_UNDEFINED
:
694 link_info
.no_undefined
= true;
696 case OPTION_NO_WARN_MISMATCH
:
697 command_line
.warn_mismatch
= false;
699 case OPTION_NOINHIBIT_EXEC
:
700 force_make_executable
= true;
702 case OPTION_NO_WHOLE_ARCHIVE
:
703 whole_archive
= false;
706 /* FIXME "-O<non-digits> <value>" used to set the address of
707 section <non-digits>. Was this for compatibility with
708 something, or can we create a new option to do that
709 (with a syntax similar to -defsym)?
710 getopt can't handle two args to an option without kludges. */
712 /* Enable optimizations of output files. */
713 link_info
.optimize
= strtoul (optarg
, NULL
, 0) ? true : false;
716 lang_add_output (optarg
, 0);
719 lang_add_output_format (optarg
, (char *) NULL
, (char *) NULL
, 0);
723 link_info
.emitrelocations
= true;
726 link_info
.relocateable
= true;
727 config
.build_constructors
= false;
728 config
.magic_demand_paged
= false;
729 config
.text_read_only
= false;
730 config
.dynamic_link
= false;
733 /* The GNU linker traditionally uses -R to mean to include
734 only the symbols from a file. The Solaris linker uses -R
735 to set the path used by the runtime linker to find
736 libraries. This is the GNU linker -rpath argument. We
737 try to support both simultaneously by checking the file
738 named. If it is a directory, rather than a regular file,
739 we assume -rpath was meant. */
743 if (stat (optarg
, &s
) >= 0
744 && ! S_ISDIR (s
.st_mode
))
746 lang_add_input_file (optarg
,
747 lang_input_file_is_symbols_only_enum
,
754 if (command_line
.rpath
== NULL
)
755 command_line
.rpath
= buystring (optarg
);
758 size_t rpath_len
= strlen (command_line
.rpath
);
759 size_t optarg_len
= strlen (optarg
);
761 char *cp
= command_line
.rpath
;
763 /* First see whether OPTARG is already in the path. */
767 while (optarg
[idx
] != '\0' && optarg
[idx
] == cp
[idx
])
769 if (optarg
[idx
] == '\0'
770 && (cp
[idx
] == '\0' || cp
[idx
] == ':'))
775 cp
= strchr (cp
, ':');
783 buf
= xmalloc (rpath_len
+ optarg_len
+ 2);
784 sprintf (buf
, "%s:%s", command_line
.rpath
, optarg
);
785 free (command_line
.rpath
);
786 command_line
.rpath
= buf
;
790 case OPTION_RPATH_LINK
:
791 if (command_line
.rpath_link
== NULL
)
792 command_line
.rpath_link
= buystring (optarg
);
797 buf
= xmalloc (strlen (command_line
.rpath_link
)
800 sprintf (buf
, "%s:%s", command_line
.rpath_link
, optarg
);
801 free (command_line
.rpath_link
);
802 command_line
.rpath_link
= buf
;
806 command_line
.relax
= true;
808 case OPTION_RETAIN_SYMBOLS_FILE
:
809 add_keepsyms_file (optarg
);
812 link_info
.strip
= strip_debugger
;
815 link_info
.strip
= strip_all
;
818 if (config
.has_shared
)
819 link_info
.shared
= true;
821 einfo (_("%P%F: -shared not supported\n"));
823 case 'h': /* Used on Solaris. */
825 command_line
.soname
= optarg
;
827 case OPTION_SORT_COMMON
:
828 config
.sort_common
= true;
833 case OPTION_SYMBOLIC
:
834 link_info
.symbolic
= true;
840 ldfile_open_command_file (optarg
);
841 parser_input
= input_script
;
845 set_section_start (".bss", optarg
);
848 set_section_start (".data", optarg
);
851 set_section_start (".text", optarg
);
853 case OPTION_TRADITIONAL_FORMAT
:
854 link_info
.traditional_format
= true;
856 case OPTION_TASK_LINK
:
857 link_info
.task_link
= true;
858 /* Fall through - do an implied -r option. */
860 link_info
.relocateable
= true;
861 config
.build_constructors
= true;
862 config
.magic_demand_paged
= false;
863 config
.text_read_only
= false;
864 config
.dynamic_link
= false;
867 ldlang_add_undef (optarg
);
871 version_printed
= true;
872 trace_file_tries
= true;
876 version_printed
= true;
880 version_printed
= true;
883 /* This output is intended to follow the GNU standards document. */
884 printf ("GNU ld %s\n", ld_program_version
);
885 printf (_("Copyright 2000 Free Software Foundation, Inc.\n"));
887 This program is free software; you may redistribute it under the terms of\n\
888 the GNU General Public License. This program has absolutely no warranty.\n"));
890 ld_emulation_xfer_type
**ptr
= ld_emulations
;
892 printf (_(" Supported emulations:\n"));
895 printf (" %s\n", (*ptr
)->emulation_name
);
901 case OPTION_VERSION_SCRIPT
:
902 /* This option indicates a small script that only specifies
903 version information. Read it, but don't assume that
904 we've seen a linker script. */
906 boolean hold_had_script
;
908 hold_had_script
= had_script
;
909 ldfile_open_command_file (optarg
);
910 had_script
= hold_had_script
;
911 parser_input
= input_version_script
;
915 case OPTION_VERSION_EXPORTS_SECTION
:
916 /* This option records a version symbol to be applied to the
917 symbols listed for export to be found in the object files
918 .exports sections. */
919 command_line
.version_exports_section
= optarg
;
921 case OPTION_WARN_COMMON
:
922 config
.warn_common
= true;
924 case OPTION_WARN_CONSTRUCTORS
:
925 config
.warn_constructors
= true;
927 case OPTION_WARN_MULTIPLE_GP
:
928 config
.warn_multiple_gp
= true;
930 case OPTION_WARN_ONCE
:
931 config
.warn_once
= true;
933 case OPTION_WARN_SECTION_ALIGN
:
934 config
.warn_section_align
= true;
936 case OPTION_WHOLE_ARCHIVE
:
937 whole_archive
= true;
943 link_info
.discard
= discard_l
;
946 link_info
.discard
= discard_all
;
949 if (strncmp (optarg
, "P,", 2) == 0)
951 default_dirlist
= xstrdup (optarg
);
957 /* We accept and ignore this option for Solaris
958 compatibility. Actually, on Solaris, optarg is not
959 ignored. Someday we should handle it correctly. FIXME. */
961 case OPTION_SPLIT_BY_RELOC
:
962 config
.split_by_reloc
= strtoul (optarg
, NULL
, 0);
964 case OPTION_SPLIT_BY_FILE
:
965 config
.split_by_file
= true;
967 case OPTION_CHECK_SECTIONS
:
968 command_line
.check_section_addresses
= true;
970 case OPTION_NO_CHECK_SECTIONS
:
971 command_line
.check_section_addresses
= false;
977 _("%s: may not nest groups (--help for usage)\n"),
988 _("%s: group ended before it began (--help for usage)\n"),
995 case OPTION_MPC860C0
:
996 link_info
.mpc860c0
= 20; /* default value (in bytes) */
1001 words
= is_num (optarg
, 1, 10, 0);
1005 _("%s: Invalid argument to option \"mpc860c0\"\n"),
1009 link_info
.mpc860c0
= words
* 4; /* convert words to bytes */
1011 command_line
.relax
= true;
1015 link_info
.init_function
= optarg
;
1019 link_info
.fini_function
= optarg
;
1025 lang_leave_group ();
1027 if (default_dirlist
!= NULL
)
1028 set_default_dirlist (default_dirlist
);
1032 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1033 library search path. */
1036 set_default_dirlist (dirlist_ptr
)
1043 p
= strchr (dirlist_ptr
, PATH_SEPARATOR
);
1046 if (*dirlist_ptr
!= '\0')
1047 ldfile_add_library_path (dirlist_ptr
, true);
1050 dirlist_ptr
= p
+ 1;
1055 set_section_start (sect
, valstr
)
1056 char *sect
, *valstr
;
1059 bfd_vma val
= bfd_scan_vma (valstr
, &end
, 16);
1061 einfo (_("%P%F: invalid hex number `%s'\n"), valstr
);
1062 lang_section_start (sect
, exp_intop (val
));
1065 /* Print help messages for the options. */
1071 const char **targets
, **pp
;
1073 printf (_("Usage: %s [options] file...\n"), program_name
);
1075 printf (_("Options:\n"));
1076 for (i
= 0; i
< OPTION_COUNT
; i
++)
1078 if (ld_options
[i
].doc
!= NULL
)
1092 if (ld_options
[j
].shortopt
!= '\0'
1093 && ld_options
[j
].control
!= NO_HELP
)
1095 printf ("%s-%c", comma
? ", " : "", ld_options
[j
].shortopt
);
1096 len
+= (comma
? 2 : 0) + 2;
1097 if (ld_options
[j
].arg
!= NULL
)
1099 if (ld_options
[j
].opt
.has_arg
!= optional_argument
)
1104 printf ("%s", _(ld_options
[j
].arg
));
1105 len
+= strlen (_(ld_options
[j
].arg
));
1111 while (j
< OPTION_COUNT
&& ld_options
[j
].doc
== NULL
);
1116 if (ld_options
[j
].opt
.name
!= NULL
1117 && ld_options
[j
].control
!= NO_HELP
)
1121 ld_options
[j
].control
== TWO_DASHES
? "-" : "",
1122 ld_options
[j
].opt
.name
);
1123 len
+= ((comma
? 2 : 0)
1125 + (ld_options
[j
].control
== TWO_DASHES
? 1 : 0)
1126 + strlen (ld_options
[j
].opt
.name
));
1127 if (ld_options
[j
].arg
!= NULL
)
1129 printf (" %s", _(ld_options
[j
].arg
));
1130 len
+= 1 + strlen (_(ld_options
[j
].arg
));
1136 while (j
< OPTION_COUNT
&& ld_options
[j
].doc
== NULL
);
1144 for (; len
< 30; len
++)
1147 printf ("%s\n", _(ld_options
[i
].doc
));
1151 /* Note: Various tools (such as libtool) depend upon the
1152 format of the listings below - do not change them. */
1153 /* xgettext:c-format */
1154 printf (_("%s: supported targets:"), program_name
);
1155 targets
= bfd_target_list ();
1156 for (pp
= targets
; *pp
!= NULL
; pp
++)
1157 printf (" %s", *pp
);
1161 /* xgettext:c-format */
1162 printf (_("%s: supported emulations: "), program_name
);
1163 ldemul_list_emulations (stdout
);
1166 /* xgettext:c-format */
1167 printf (_("%s: emulation specific options:\n"), program_name
);
1168 ldemul_list_emulation_options (stdout
);
1171 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO
);