1 /* Parse options for the GNU linker.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
4 Free Software Foundation, Inc.
6 This file is part of GLD, the Gnu Linker.
8 GLD is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GLD is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GLD; see the file COPYING. If not, write to the Free
20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
25 #include "libiberty.h"
43 #ifndef PATH_SEPARATOR
44 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
45 #define PATH_SEPARATOR ';'
47 #define PATH_SEPARATOR ':'
51 /* Somewhere above, sys/stat.h got included . . . . */
52 #if !defined(S_ISDIR) && defined(S_IFDIR)
53 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
56 /* Omit args to avoid the possibility of clashing with a system header
57 that might disagree about consts. */
58 unsigned long strtoul ();
60 static int is_num
PARAMS ((const char *, int, int, int));
61 static void set_default_dirlist
PARAMS ((char *dirlist_ptr
));
62 static void set_section_start
PARAMS ((char *sect
, char *valstr
));
63 static void help
PARAMS ((void));
65 /* Non-zero if we are processing a --defsym from the command line. */
66 int parsing_defsym
= 0;
68 /* Codes used for the long options with no short synonyms. 150 isn't
69 special; it's just an arbitrary non-ASCII char value. */
71 #define OPTION_ASSERT 150
72 #define OPTION_CALL_SHARED (OPTION_ASSERT + 1)
73 #define OPTION_CREF (OPTION_CALL_SHARED + 1)
74 #define OPTION_DEFSYM (OPTION_CREF + 1)
75 #define OPTION_DEMANGLE (OPTION_DEFSYM + 1)
76 #define OPTION_DYNAMIC_LINKER (OPTION_DEMANGLE + 1)
77 #define OPTION_EB (OPTION_DYNAMIC_LINKER + 1)
78 #define OPTION_EL (OPTION_EB + 1)
79 #define OPTION_EMBEDDED_RELOCS (OPTION_EL + 1)
80 #define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1)
81 #define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1)
82 #define OPTION_IGNORE (OPTION_HELP + 1)
83 #define OPTION_MAP (OPTION_IGNORE + 1)
84 #define OPTION_NO_DEMANGLE (OPTION_MAP + 1)
85 #define OPTION_NO_KEEP_MEMORY (OPTION_NO_DEMANGLE + 1)
86 #define OPTION_NO_WARN_MISMATCH (OPTION_NO_KEEP_MEMORY + 1)
87 #define OPTION_NOINHIBIT_EXEC (OPTION_NO_WARN_MISMATCH + 1)
88 #define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1)
89 #define OPTION_NO_WHOLE_ARCHIVE (OPTION_NON_SHARED + 1)
90 #define OPTION_OFORMAT (OPTION_NO_WHOLE_ARCHIVE + 1)
91 #define OPTION_RELAX (OPTION_OFORMAT + 1)
92 #define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1)
93 #define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1)
94 #define OPTION_RPATH_LINK (OPTION_RPATH + 1)
95 #define OPTION_SHARED (OPTION_RPATH_LINK + 1)
96 #define OPTION_SONAME (OPTION_SHARED + 1)
97 #define OPTION_SORT_COMMON (OPTION_SONAME + 1)
98 #define OPTION_STATS (OPTION_SORT_COMMON + 1)
99 #define OPTION_SYMBOLIC (OPTION_STATS + 1)
100 #define OPTION_TASK_LINK (OPTION_SYMBOLIC + 1)
101 #define OPTION_TBSS (OPTION_TASK_LINK + 1)
102 #define OPTION_TDATA (OPTION_TBSS + 1)
103 #define OPTION_TTEXT (OPTION_TDATA + 1)
104 #define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1)
105 #define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1)
106 #define OPTION_VERBOSE (OPTION_UR + 1)
107 #define OPTION_VERSION (OPTION_VERBOSE + 1)
108 #define OPTION_VERSION_SCRIPT (OPTION_VERSION + 1)
109 #define OPTION_VERSION_EXPORTS_SECTION (OPTION_VERSION_SCRIPT + 1)
110 #define OPTION_WARN_COMMON (OPTION_VERSION_EXPORTS_SECTION + 1)
111 #define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1)
112 #define OPTION_WARN_MULTIPLE_GP (OPTION_WARN_CONSTRUCTORS + 1)
113 #define OPTION_WARN_ONCE (OPTION_WARN_MULTIPLE_GP + 1)
114 #define OPTION_WARN_SECTION_ALIGN (OPTION_WARN_ONCE + 1)
115 #define OPTION_SPLIT_BY_RELOC (OPTION_WARN_SECTION_ALIGN + 1)
116 #define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
117 #define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
118 #define OPTION_WRAP (OPTION_WHOLE_ARCHIVE + 1)
119 #define OPTION_FORCE_EXE_SUFFIX (OPTION_WRAP + 1)
120 #define OPTION_GC_SECTIONS (OPTION_FORCE_EXE_SUFFIX + 1)
121 #define OPTION_NO_GC_SECTIONS (OPTION_GC_SECTIONS + 1)
122 #define OPTION_CHECK_SECTIONS (OPTION_NO_GC_SECTIONS + 1)
123 #define OPTION_NO_CHECK_SECTIONS (OPTION_CHECK_SECTIONS + 1)
124 #define OPTION_MPC860C0 (OPTION_NO_CHECK_SECTIONS + 1)
125 #define OPTION_NO_UNDEFINED (OPTION_MPC860C0 + 1)
126 #define OPTION_INIT (OPTION_NO_UNDEFINED + 1)
127 #define OPTION_FINI (OPTION_INIT + 1)
128 #define OPTION_SECTION_START (OPTION_FINI + 1)
129 #define OPTION_UNIQUE (OPTION_SECTION_START + 1)
130 #define OPTION_TARGET_HELP (OPTION_UNIQUE + 1)
131 #define OPTION_ALLOW_SHLIB_UNDEFINED (OPTION_TARGET_HELP + 1)
133 /* The long options. This structure is used for both the option
134 parsing and the help text. */
138 /* The long option information. */
140 /* The short option with the same meaning ('\0' if none). */
142 /* The name of the argument (NULL if none). */
144 /* The documentation string. If this is NULL, this is a synonym for
145 the previous option. */
148 /* Use one dash before long option name. */
150 /* Use two dashes before long option name. */
152 /* Only accept two dashes before the long option name.
153 This is an overloading of the use of this enum, since originally it
154 was only intended to tell the --help display function how to display
155 the long option name. This feature was added in order to resolve
156 the confusion about the -omagic command line switch. Is it setting
157 the output file name to "magic" or is it setting the NMAGIC flag on
158 the output ? It has been decided that it is setting the output file
159 name, and that if you want to set the NMAGIC flag you should use -N
162 /* Don't mention this option in --help output. */
167 static const struct ld_option ld_options
[] =
169 { {NULL
, required_argument
, NULL
, '\0'},
170 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
172 { {"architecture", required_argument
, NULL
, 'A'},
173 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES
},
174 { {"format", required_argument
, NULL
, 'b'},
175 'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES
},
176 { {"mri-script", required_argument
, NULL
, 'c'},
177 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES
},
178 { {"dc", no_argument
, NULL
, 'd'},
179 'd', NULL
, N_("Force common symbols to be defined"), ONE_DASH
},
180 { {"dp", no_argument
, NULL
, 'd'},
181 '\0', NULL
, NULL
, ONE_DASH
},
182 { {"entry", required_argument
, NULL
, 'e'},
183 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES
},
184 { {"export-dynamic", no_argument
, NULL
, OPTION_EXPORT_DYNAMIC
},
185 'E', NULL
, N_("Export all dynamic symbols"), TWO_DASHES
},
186 { {"EB", no_argument
, NULL
, OPTION_EB
},
187 '\0', NULL
, N_("Link big-endian objects"), ONE_DASH
},
188 { {"EL", no_argument
, NULL
, OPTION_EL
},
189 '\0', NULL
, N_("Link little-endian objects"), ONE_DASH
},
190 { {"auxiliary", required_argument
, NULL
, 'f'},
191 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
193 { {"filter", required_argument
, NULL
, 'F'},
194 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES
},
195 { {NULL
, no_argument
, NULL
, '\0'},
196 'g', NULL
, N_("Ignored"), ONE_DASH
},
197 { {"gpsize", required_argument
, NULL
, 'G'},
198 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
200 { {"soname", required_argument
, NULL
, OPTION_SONAME
},
201 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH
},
202 { {"library", required_argument
, NULL
, 'l'},
203 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES
},
204 { {"library-path", required_argument
, NULL
, 'L'},
205 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES
},
206 { {NULL
, required_argument
, NULL
, '\0'},
207 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH
},
208 { {"print-map", no_argument
, NULL
, 'M'},
209 'M', NULL
, N_("Print map file on standard output"), TWO_DASHES
},
210 { {"nmagic", no_argument
, NULL
, 'n'},
211 'n', NULL
, N_("Do not page align data"), TWO_DASHES
},
212 { {"omagic", no_argument
, NULL
, 'N'},
213 'N', NULL
, N_("Do not page align data, do not make text readonly"),
214 EXACTLY_TWO_DASHES
},
215 { {"output", required_argument
, NULL
, 'o'},
216 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES
},
217 { {NULL
, required_argument
, NULL
, '\0'},
218 'O', NULL
, N_("Optimize output file"), ONE_DASH
},
219 { {"Qy", no_argument
, NULL
, OPTION_IGNORE
},
220 '\0', NULL
, N_("Ignored for SVR4 compatibility"), ONE_DASH
},
221 { {"emit-relocs", no_argument
, NULL
, 'q'},
222 'q', NULL
, "Generate relocations in final output", TWO_DASHES
},
223 { {"relocateable", no_argument
, NULL
, 'r'},
224 'r', NULL
, N_("Generate relocateable output"), TWO_DASHES
},
225 { {NULL
, no_argument
, NULL
, '\0'},
226 'i', NULL
, NULL
, ONE_DASH
},
227 { {"just-symbols", required_argument
, NULL
, 'R'},
228 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
230 { {"strip-all", no_argument
, NULL
, 's'},
231 's', NULL
, N_("Strip all symbols"), TWO_DASHES
},
232 { {"strip-debug", no_argument
, NULL
, 'S'},
233 'S', NULL
, N_("Strip debugging symbols"), TWO_DASHES
},
234 { {"trace", no_argument
, NULL
, 't'},
235 't', NULL
, N_("Trace file opens"), TWO_DASHES
},
236 { {"script", required_argument
, NULL
, 'T'},
237 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES
},
238 { {"undefined", required_argument
, NULL
, 'u'},
239 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES
},
240 { {"unique", optional_argument
, NULL
, OPTION_UNIQUE
},
241 '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES
},
242 { {"Ur", no_argument
, NULL
, OPTION_UR
},
243 '\0', NULL
, N_("Build global constructor/destructor tables"), ONE_DASH
},
244 { {"version", no_argument
, NULL
, OPTION_VERSION
},
245 'v', NULL
, N_("Print version information"), TWO_DASHES
},
246 { {NULL
, no_argument
, NULL
, '\0'},
247 'V', NULL
, N_("Print version and emulation information"), ONE_DASH
},
248 { {"discard-all", no_argument
, NULL
, 'x'},
249 'x', NULL
, N_("Discard all local symbols"), TWO_DASHES
},
250 { {"discard-locals", no_argument
, NULL
, 'X'},
251 'X', NULL
, N_("Discard temporary local symbols"), TWO_DASHES
},
252 { {"trace-symbol", required_argument
, NULL
, 'y'},
253 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES
},
254 { {NULL
, required_argument
, NULL
, '\0'},
255 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH
},
256 { {"start-group", no_argument
, NULL
, '('},
257 '(', NULL
, N_("Start a group"), TWO_DASHES
},
258 { {"end-group", no_argument
, NULL
, ')'},
259 ')', NULL
, N_("End a group"), TWO_DASHES
},
260 { {"assert", required_argument
, NULL
, OPTION_ASSERT
},
261 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH
},
262 { {"Bdynamic", no_argument
, NULL
, OPTION_CALL_SHARED
},
263 '\0', NULL
, N_("Link against shared libraries"), ONE_DASH
},
264 { {"dy", no_argument
, NULL
, OPTION_CALL_SHARED
},
265 '\0', NULL
, NULL
, ONE_DASH
},
266 { {"call_shared", no_argument
, NULL
, OPTION_CALL_SHARED
},
267 '\0', NULL
, NULL
, ONE_DASH
},
268 { {"Bstatic", no_argument
, NULL
, OPTION_NON_SHARED
},
269 '\0', NULL
, N_("Do not link against shared libraries"), ONE_DASH
},
270 { {"dn", no_argument
, NULL
, OPTION_NON_SHARED
},
271 '\0', NULL
, NULL
, ONE_DASH
},
272 { {"non_shared", no_argument
, NULL
, OPTION_NON_SHARED
},
273 '\0', NULL
, NULL
, ONE_DASH
},
274 { {"static", no_argument
, NULL
, OPTION_NON_SHARED
},
275 '\0', NULL
, NULL
, ONE_DASH
},
276 { {"Bsymbolic", no_argument
, NULL
, OPTION_SYMBOLIC
},
277 '\0', NULL
, N_("Bind global references locally"), ONE_DASH
},
278 { {"check-sections", no_argument
, NULL
, OPTION_CHECK_SECTIONS
},
279 '\0', NULL
, N_("Check section addresses for overlaps (default)"), TWO_DASHES
},
280 { {"no-check-sections", no_argument
, NULL
, OPTION_NO_CHECK_SECTIONS
},
281 '\0', NULL
, N_("Do not check section addresses for overlaps"),
283 { {"cref", no_argument
, NULL
, OPTION_CREF
},
284 '\0', NULL
, N_("Output cross reference table"), TWO_DASHES
},
285 { {"defsym", required_argument
, NULL
, OPTION_DEFSYM
},
286 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES
},
287 { {"demangle", optional_argument
, NULL
, OPTION_DEMANGLE
},
288 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES
},
289 { {"dynamic-linker", required_argument
, NULL
, OPTION_DYNAMIC_LINKER
},
290 '\0', N_("PROGRAM"), N_("Set the dynamic linker to use"), TWO_DASHES
},
291 { {"embedded-relocs", no_argument
, NULL
, OPTION_EMBEDDED_RELOCS
},
292 '\0', NULL
, N_("Generate embedded relocs"), TWO_DASHES
},
293 { {"fini", required_argument
, NULL
, OPTION_FINI
},
294 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH
},
295 { {"force-exe-suffix", no_argument
, NULL
, OPTION_FORCE_EXE_SUFFIX
},
296 '\0', NULL
, N_("Force generation of file with .exe suffix"), TWO_DASHES
},
297 { {"gc-sections", no_argument
, NULL
, OPTION_GC_SECTIONS
},
298 '\0', NULL
, N_("Remove unused sections (on some targets)"),
300 { {"no-gc-sections", no_argument
, NULL
, OPTION_NO_GC_SECTIONS
},
301 '\0', NULL
, N_("Don't remove unused sections (default)"),
303 { {"help", no_argument
, NULL
, OPTION_HELP
},
304 '\0', NULL
, N_("Print option help"), TWO_DASHES
},
305 { {"init", required_argument
, NULL
, OPTION_INIT
},
306 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH
},
307 { {"Map", required_argument
, NULL
, OPTION_MAP
},
308 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH
},
309 { {"no-demangle", no_argument
, NULL
, OPTION_NO_DEMANGLE
},
310 '\0', NULL
, N_("Do not demangle symbol names"), TWO_DASHES
},
311 { {"no-keep-memory", no_argument
, NULL
, OPTION_NO_KEEP_MEMORY
},
312 '\0', NULL
, N_("Use less memory and more disk I/O"), TWO_DASHES
},
313 { {"no-undefined", no_argument
, NULL
, OPTION_NO_UNDEFINED
},
314 '\0', NULL
, N_("Allow no undefined symbols"), TWO_DASHES
},
315 { {"allow-shlib-undefined", no_argument
, NULL
, OPTION_ALLOW_SHLIB_UNDEFINED
},
316 '\0', NULL
, N_("Allow undefined symbols in shared objects"), TWO_DASHES
},
317 { {"no-warn-mismatch", no_argument
, NULL
, OPTION_NO_WARN_MISMATCH
},
318 '\0', NULL
, N_("Don't warn about mismatched input files"), TWO_DASHES
},
319 { {"no-whole-archive", no_argument
, NULL
, OPTION_NO_WHOLE_ARCHIVE
},
320 '\0', NULL
, N_("Turn off --whole-archive"), TWO_DASHES
},
321 { {"noinhibit-exec", no_argument
, NULL
, OPTION_NOINHIBIT_EXEC
},
322 '\0', NULL
, N_("Create an output file even if errors occur"), TWO_DASHES
},
323 { {"noinhibit_exec", no_argument
, NULL
, OPTION_NOINHIBIT_EXEC
},
324 '\0', NULL
, NULL
, NO_HELP
},
325 { {"oformat", required_argument
, NULL
, OPTION_OFORMAT
},
326 '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES
},
327 { {"qmagic", no_argument
, NULL
, OPTION_IGNORE
},
328 '\0', NULL
, N_("Ignored for Linux compatibility"), ONE_DASH
},
329 { {"relax", no_argument
, NULL
, OPTION_RELAX
},
330 '\0', NULL
, N_("Relax branches on certain targets"), TWO_DASHES
},
331 { {"retain-symbols-file", required_argument
, NULL
,
332 OPTION_RETAIN_SYMBOLS_FILE
},
333 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES
},
334 { {"rpath", required_argument
, NULL
, OPTION_RPATH
},
335 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH
},
336 { {"rpath-link", required_argument
, NULL
, OPTION_RPATH_LINK
},
337 '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH
},
338 { {"shared", no_argument
, NULL
, OPTION_SHARED
},
339 '\0', NULL
, N_("Create a shared library"), ONE_DASH
},
340 { {"Bshareable", no_argument
, NULL
, OPTION_SHARED
}, /* FreeBSD. */
341 '\0', NULL
, NULL
, ONE_DASH
},
342 { {"sort-common", no_argument
, NULL
, OPTION_SORT_COMMON
},
343 '\0', NULL
, N_("Sort common symbols by size"), TWO_DASHES
},
344 { {"sort_common", no_argument
, NULL
, OPTION_SORT_COMMON
},
345 '\0', NULL
, NULL
, NO_HELP
},
346 { {"split-by-file", optional_argument
, NULL
, OPTION_SPLIT_BY_FILE
},
347 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES
},
348 { {"split-by-reloc", optional_argument
, NULL
, OPTION_SPLIT_BY_RELOC
},
349 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES
},
350 { {"stats", no_argument
, NULL
, OPTION_STATS
},
351 '\0', NULL
, N_("Print memory usage statistics"), TWO_DASHES
},
352 { {"target-help", no_argument
, NULL
, OPTION_TARGET_HELP
},
353 '\0', NULL
, N_("Display target specific options"), TWO_DASHES
},
354 { {"task-link", required_argument
, NULL
, OPTION_TASK_LINK
},
355 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES
},
356 { {"traditional-format", no_argument
, NULL
, OPTION_TRADITIONAL_FORMAT
},
357 '\0', NULL
, N_("Use same format as native linker"), TWO_DASHES
},
358 { {"section-start", required_argument
, NULL
, OPTION_SECTION_START
},
359 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES
},
360 { {"Tbss", required_argument
, NULL
, OPTION_TBSS
},
361 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH
},
362 { {"Tdata", required_argument
, NULL
, OPTION_TDATA
},
363 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH
},
364 { {"Ttext", required_argument
, NULL
, OPTION_TTEXT
},
365 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH
},
366 { {"verbose", no_argument
, NULL
, OPTION_VERBOSE
},
367 '\0', NULL
, N_("Output lots of information during link"), TWO_DASHES
},
368 { {"dll-verbose", no_argument
, NULL
, OPTION_VERBOSE
}, /* Linux. */
369 '\0', NULL
, NULL
, NO_HELP
},
370 { {"version-script", required_argument
, NULL
, OPTION_VERSION_SCRIPT
},
371 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES
},
372 { {"version-exports-section", required_argument
, NULL
,
373 OPTION_VERSION_EXPORTS_SECTION
},
374 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
376 { {"warn-common", no_argument
, NULL
, OPTION_WARN_COMMON
},
377 '\0', NULL
, N_("Warn about duplicate common symbols"), TWO_DASHES
},
378 { {"warn-constructors", no_argument
, NULL
, OPTION_WARN_CONSTRUCTORS
},
379 '\0', NULL
, N_("Warn if global constructors/destructors are seen"),
381 { {"warn-multiple-gp", no_argument
, NULL
, OPTION_WARN_MULTIPLE_GP
},
382 '\0', NULL
, N_("Warn if the multiple GP values are used"), TWO_DASHES
},
383 { {"warn-once", no_argument
, NULL
, OPTION_WARN_ONCE
},
384 '\0', NULL
, N_("Warn only once per undefined symbol"), TWO_DASHES
},
385 { {"warn-section-align", no_argument
, NULL
, OPTION_WARN_SECTION_ALIGN
},
386 '\0', NULL
, N_("Warn if start of section changes due to alignment"),
388 { {"whole-archive", no_argument
, NULL
, OPTION_WHOLE_ARCHIVE
},
389 '\0', NULL
, N_("Include all objects from following archives"), TWO_DASHES
},
390 { {"wrap", required_argument
, NULL
, OPTION_WRAP
},
391 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES
},
392 { {"mpc860c0", optional_argument
, NULL
, OPTION_MPC860C0
},
393 '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES
}
396 #define OPTION_COUNT ARRAY_SIZE (ld_options)
398 /* Test STRING for containing a string of digits that form a number
399 between MIN and MAX. The return value is the number or ERR. */
402 is_num (string
, min
, max
, err
)
410 for (; *string
; ++string
)
412 if (! isdigit (*string
))
417 result
= result
* 10 + (*string
- '0');
419 if (result
< min
|| result
> max
)
426 parse_args (argc
, argv
)
433 char *default_dirlist
= NULL
;
434 char shortopts
[OPTION_COUNT
* 3 + 2];
435 struct option longopts
[OPTION_COUNT
+ 1];
436 struct option really_longopts
[OPTION_COUNT
+ 1];
439 /* Starting the short option string with '-' is for programs that
440 expect options and other ARGV-elements in any order and that care about
441 the ordering of the two. We describe each non-option ARGV-element
442 as if it were the argument of an option with character code 1. */
447 for (i
= 0; i
< OPTION_COUNT
; i
++)
449 if (ld_options
[i
].shortopt
!= '\0')
451 shortopts
[is
] = ld_options
[i
].shortopt
;
453 if (ld_options
[i
].opt
.has_arg
== required_argument
454 || ld_options
[i
].opt
.has_arg
== optional_argument
)
458 if (ld_options
[i
].opt
.has_arg
== optional_argument
)
465 if (ld_options
[i
].opt
.name
!= NULL
)
467 if (ld_options
[i
].control
== EXACTLY_TWO_DASHES
)
469 really_longopts
[irl
] = ld_options
[i
].opt
;
474 longopts
[il
] = ld_options
[i
].opt
;
479 shortopts
[is
] = '\0';
480 longopts
[il
].name
= NULL
;
481 really_longopts
[irl
].name
= NULL
;
483 /* The -G option is ambiguous on different platforms. Sometimes it
484 specifies the largest data size to put into the small data
485 section. Sometimes it is equivalent to --shared. Unfortunately,
486 the first form takes an argument, while the second does not.
488 We need to permit the --shared form because on some platforms,
489 such as Solaris, gcc -shared will pass -G to the linker.
491 To permit either usage, we look through the argument list. If we
492 find -G not followed by a number, we change it into --shared.
493 This will work for most normal cases. */
494 for (i
= 1; i
< argc
; i
++)
495 if (strcmp (argv
[i
], "-G") == 0
497 || ! isdigit ((unsigned char) argv
[i
+ 1][0])))
498 argv
[i
] = (char *) "--shared";
500 /* Because we permit long options to start with a single dash, and
501 we have a --library option, and the -l option is conventionally
502 used with an immediately following argument, we can have bad
503 results if somebody tries to use -l with a library whose name
504 happens to start with "ibrary", as in -li. We avoid problems by
505 simply turning -l into --library. This means that users will
506 have to use two dashes in order to use --library, which is OK
507 since that's how it is documented.
509 FIXME: It's possible that this problem can arise for other short
510 options as well, although the user does always have the recourse
511 of adding a space between the option and the argument. */
512 for (i
= 1; i
< argc
; i
++)
514 if (argv
[i
][0] == '-'
516 && argv
[i
][2] != '\0')
520 n
= (char *) xmalloc (strlen (argv
[i
]) + 20);
521 sprintf (n
, "--library=%s", argv
[i
] + 2);
532 /* Using last_optind lets us avoid calling ldemul_parse_args
533 multiple times on a single option, which would lead to
534 confusion in the internal static variables maintained by
535 getopt. This could otherwise happen for an argument like
536 -nx, in which the -n is parsed as a single option, and we
537 loop around to pick up the -x. */
538 if (optind
!= last_optind
)
540 if (ldemul_parse_args (argc
, argv
))
542 last_optind
= optind
;
545 /* getopt_long_only is like getopt_long, but '-' as well as '--'
546 can indicate a long option. */
548 optc
= getopt_long_only (argc
, argv
, shortopts
, longopts
, &longind
);
552 optc
= getopt_long (argc
, argv
, shortopts
, really_longopts
, &longind
);
561 fprintf (stderr
, _("%s: unrecognized option '%s'\n"),
562 program_name
, argv
[optind
- 1]);
565 _("%s: use the --help option for usage information\n"),
568 case 1: /* File name. */
569 lang_add_input_file (optarg
, lang_input_file_is_file_enum
,
576 /* For HP/UX compatibility. Actually -a shared should mean
577 ``use only shared libraries'' but, then, we don't
578 currently support shared libraries on HP/UX anyhow. */
579 if (strcmp (optarg
, "archive") == 0)
580 config
.dynamic_link
= false;
581 else if (strcmp (optarg
, "shared") == 0
582 || strcmp (optarg
, "default") == 0)
583 config
.dynamic_link
= true;
585 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg
);
588 /* FIXME: We just ignore these, but we should handle them. */
589 if (strcmp (optarg
, "definitions") == 0)
591 else if (strcmp (optarg
, "nodefinitions") == 0)
593 else if (strcmp (optarg
, "nosymbolic") == 0)
595 else if (strcmp (optarg
, "pure-text") == 0)
598 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg
);
601 ldfile_add_arch (optarg
);
604 lang_add_target (optarg
);
607 ldfile_open_command_file (optarg
);
608 parser_input
= input_mri_script
;
611 case OPTION_CALL_SHARED
:
612 config
.dynamic_link
= true;
614 case OPTION_NON_SHARED
:
615 config
.dynamic_link
= false;
618 command_line
.cref
= true;
619 link_info
.notice_all
= true;
622 command_line
.force_common_definition
= true;
626 lex_redirect (optarg
);
627 parser_input
= input_defsym
;
633 case OPTION_DEMANGLE
:
637 enum demangling_styles style
;
639 style
= cplus_demangle_name_to_style (optarg
);
640 if (style
== unknown_demangling
)
641 einfo (_("%F%P: unknown demangling style `%s'"),
644 cplus_demangle_set_style (style
);
647 case OPTION_DYNAMIC_LINKER
:
648 command_line
.interpreter
= optarg
;
651 command_line
.endian
= ENDIAN_BIG
;
654 command_line
.endian
= ENDIAN_LITTLE
;
656 case OPTION_EMBEDDED_RELOCS
:
657 command_line
.embedded_relocs
= true;
659 case OPTION_EXPORT_DYNAMIC
:
660 case 'E': /* HP/UX compatibility. */
661 command_line
.export_dynamic
= true;
664 lang_add_entry (optarg
, true);
667 if (command_line
.auxiliary_filters
== NULL
)
669 command_line
.auxiliary_filters
=
670 (char **) xmalloc (2 * sizeof (char *));
671 command_line
.auxiliary_filters
[0] = optarg
;
672 command_line
.auxiliary_filters
[1] = NULL
;
680 for (p
= command_line
.auxiliary_filters
; *p
!= NULL
; p
++)
682 command_line
.auxiliary_filters
=
683 (char **) xrealloc (command_line
.auxiliary_filters
,
684 (c
+ 2) * sizeof (char *));
685 command_line
.auxiliary_filters
[c
] = optarg
;
686 command_line
.auxiliary_filters
[c
+ 1] = NULL
;
690 command_line
.filter_shlib
= optarg
;
692 case OPTION_FORCE_EXE_SUFFIX
:
693 command_line
.force_exe_suffix
= true;
698 g_switch_value
= strtoul (optarg
, &end
, 0);
700 einfo (_("%P%F: invalid number `%s'\n"), optarg
);
706 case OPTION_GC_SECTIONS
:
707 command_line
.gc_sections
= true;
714 ldfile_add_library_path (optarg
, true);
717 lang_add_input_file (optarg
, lang_input_file_is_l_enum
,
721 config
.map_filename
= "-";
724 /* Ignore. Was handled in a pre-parse. */
727 config
.map_filename
= optarg
;
730 config
.text_read_only
= false;
731 config
.magic_demand_paged
= false;
732 config
.dynamic_link
= false;
735 config
.magic_demand_paged
= false;
736 config
.dynamic_link
= false;
738 case OPTION_NO_DEMANGLE
:
741 case OPTION_NO_GC_SECTIONS
:
742 command_line
.gc_sections
= false;
744 case OPTION_NO_KEEP_MEMORY
:
745 link_info
.keep_memory
= false;
747 case OPTION_NO_UNDEFINED
:
748 link_info
.no_undefined
= true;
750 case OPTION_ALLOW_SHLIB_UNDEFINED
:
751 link_info
.allow_shlib_undefined
= true;
753 case OPTION_NO_WARN_MISMATCH
:
754 command_line
.warn_mismatch
= false;
756 case OPTION_NOINHIBIT_EXEC
:
757 force_make_executable
= true;
759 case OPTION_NO_WHOLE_ARCHIVE
:
760 whole_archive
= false;
763 /* FIXME "-O<non-digits> <value>" used to set the address of
764 section <non-digits>. Was this for compatibility with
765 something, or can we create a new option to do that
766 (with a syntax similar to -defsym)?
767 getopt can't handle two args to an option without kludges. */
769 /* Enable optimizations of output files. */
770 link_info
.optimize
= strtoul (optarg
, NULL
, 0) ? true : false;
773 lang_add_output (optarg
, 0);
776 lang_add_output_format (optarg
, (char *) NULL
, (char *) NULL
, 0);
779 link_info
.emitrelocations
= true;
783 link_info
.relocateable
= true;
784 config
.build_constructors
= false;
785 config
.magic_demand_paged
= false;
786 config
.text_read_only
= false;
787 config
.dynamic_link
= false;
790 /* The GNU linker traditionally uses -R to mean to include
791 only the symbols from a file. The Solaris linker uses -R
792 to set the path used by the runtime linker to find
793 libraries. This is the GNU linker -rpath argument. We
794 try to support both simultaneously by checking the file
795 named. If it is a directory, rather than a regular file,
796 we assume -rpath was meant. */
800 if (stat (optarg
, &s
) >= 0
801 && ! S_ISDIR (s
.st_mode
))
803 lang_add_input_file (optarg
,
804 lang_input_file_is_symbols_only_enum
,
811 if (command_line
.rpath
== NULL
)
812 command_line
.rpath
= buystring (optarg
);
815 size_t rpath_len
= strlen (command_line
.rpath
);
816 size_t optarg_len
= strlen (optarg
);
818 char *cp
= command_line
.rpath
;
820 /* First see whether OPTARG is already in the path. */
824 while (optarg
[idx
] != '\0' && optarg
[idx
] == cp
[idx
])
826 if (optarg
[idx
] == '\0'
827 && (cp
[idx
] == '\0' || cp
[idx
] == ':'))
832 cp
= strchr (cp
, ':');
840 buf
= xmalloc (rpath_len
+ optarg_len
+ 2);
841 sprintf (buf
, "%s:%s", command_line
.rpath
, optarg
);
842 free (command_line
.rpath
);
843 command_line
.rpath
= buf
;
847 case OPTION_RPATH_LINK
:
848 if (command_line
.rpath_link
== NULL
)
849 command_line
.rpath_link
= buystring (optarg
);
854 buf
= xmalloc (strlen (command_line
.rpath_link
)
857 sprintf (buf
, "%s:%s", command_line
.rpath_link
, optarg
);
858 free (command_line
.rpath_link
);
859 command_line
.rpath_link
= buf
;
863 command_line
.relax
= true;
865 case OPTION_RETAIN_SYMBOLS_FILE
:
866 add_keepsyms_file (optarg
);
869 link_info
.strip
= strip_debugger
;
872 link_info
.strip
= strip_all
;
875 if (config
.has_shared
)
876 link_info
.shared
= true;
878 einfo (_("%P%F: -shared not supported\n"));
880 case 'h': /* Used on Solaris. */
882 command_line
.soname
= optarg
;
884 case OPTION_SORT_COMMON
:
885 config
.sort_common
= true;
890 case OPTION_SYMBOLIC
:
891 link_info
.symbolic
= true;
897 ldfile_open_command_file (optarg
);
898 parser_input
= input_script
;
901 case OPTION_SECTION_START
:
907 /* Check for <something>=<somthing>... */
908 optarg2
= strchr (optarg
, '=');
912 _("%s: Invalid argument to option \"--section-start\"\n"),
919 /* So far so good. Are all the args present? */
920 if ((*optarg
== '\0') || (*optarg2
== '\0'))
923 _("%s: Missing argument(s) to option \"--section-start\"\n"),
928 /* We must copy the section name as set_section_start
929 doesn't do it for us. */
930 len
= optarg2
- optarg
;
931 sec_name
= xmalloc (len
);
932 memcpy (sec_name
, optarg
, len
- 1);
933 sec_name
[len
- 1] = 0;
936 set_section_start (sec_name
, optarg2
);
939 case OPTION_TARGET_HELP
:
940 /* Mention any target specific options. */
941 ldemul_list_emulation_options (stdout
);
944 set_section_start (".bss", optarg
);
947 set_section_start (".data", optarg
);
950 set_section_start (".text", optarg
);
952 case OPTION_TRADITIONAL_FORMAT
:
953 link_info
.traditional_format
= true;
955 case OPTION_TASK_LINK
:
956 link_info
.task_link
= true;
957 /* Fall through - do an implied -r option. */
959 link_info
.relocateable
= true;
960 config
.build_constructors
= true;
961 config
.magic_demand_paged
= false;
962 config
.text_read_only
= false;
963 config
.dynamic_link
= false;
966 ldlang_add_undef (optarg
);
970 lang_add_unique (optarg
);
972 config
.unique_orphan_sections
= true;
976 version_printed
= true;
977 trace_file_tries
= true;
981 version_printed
= true;
985 version_printed
= true;
988 /* This output is intended to follow the GNU standards document. */
989 printf ("GNU ld %s\n", ld_program_version
);
990 printf (_("Copyright 2001 Free Software Foundation, Inc.\n"));
992 This program is free software; you may redistribute it under the terms of\n\
993 the GNU General Public License. This program has absolutely no warranty.\n"));
995 ld_emulation_xfer_type
**ptr
= ld_emulations
;
997 printf (_(" Supported emulations:\n"));
1000 printf (" %s\n", (*ptr
)->emulation_name
);
1006 case OPTION_VERSION_SCRIPT
:
1007 /* This option indicates a small script that only specifies
1008 version information. Read it, but don't assume that
1009 we've seen a linker script. */
1011 boolean hold_had_script
;
1013 hold_had_script
= had_script
;
1014 ldfile_open_command_file (optarg
);
1015 had_script
= hold_had_script
;
1016 parser_input
= input_version_script
;
1020 case OPTION_VERSION_EXPORTS_SECTION
:
1021 /* This option records a version symbol to be applied to the
1022 symbols listed for export to be found in the object files
1023 .exports sections. */
1024 command_line
.version_exports_section
= optarg
;
1026 case OPTION_WARN_COMMON
:
1027 config
.warn_common
= true;
1029 case OPTION_WARN_CONSTRUCTORS
:
1030 config
.warn_constructors
= true;
1032 case OPTION_WARN_MULTIPLE_GP
:
1033 config
.warn_multiple_gp
= true;
1035 case OPTION_WARN_ONCE
:
1036 config
.warn_once
= true;
1038 case OPTION_WARN_SECTION_ALIGN
:
1039 config
.warn_section_align
= true;
1041 case OPTION_WHOLE_ARCHIVE
:
1042 whole_archive
= true;
1048 link_info
.discard
= discard_l
;
1051 link_info
.discard
= discard_all
;
1054 if (strncmp (optarg
, "P,", 2) == 0)
1056 default_dirlist
= xstrdup (optarg
);
1061 case OPTION_SPLIT_BY_RELOC
:
1063 config
.split_by_reloc
= strtoul (optarg
, NULL
, 0);
1065 config
.split_by_reloc
= 32768;
1067 case OPTION_SPLIT_BY_FILE
:
1069 config
.split_by_file
= bfd_scan_vma (optarg
, NULL
, 0);
1071 config
.split_by_file
= 1;
1073 case OPTION_CHECK_SECTIONS
:
1074 command_line
.check_section_addresses
= true;
1076 case OPTION_NO_CHECK_SECTIONS
:
1077 command_line
.check_section_addresses
= false;
1083 _("%s: may not nest groups (--help for usage)\n"),
1087 lang_enter_group ();
1094 _("%s: group ended before it began (--help for usage)\n"),
1098 lang_leave_group ();
1101 case OPTION_MPC860C0
:
1102 link_info
.mpc860c0
= 20; /* default value (in bytes) */
1107 words
= is_num (optarg
, 1, 10, 0);
1111 _("%s: Invalid argument to option \"mpc860c0\"\n"),
1115 link_info
.mpc860c0
= words
* 4; /* convert words to bytes */
1117 command_line
.relax
= true;
1121 link_info
.init_function
= optarg
;
1125 link_info
.fini_function
= optarg
;
1131 lang_leave_group ();
1133 if (default_dirlist
!= NULL
)
1134 set_default_dirlist (default_dirlist
);
1138 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1139 library search path. */
1142 set_default_dirlist (dirlist_ptr
)
1149 p
= strchr (dirlist_ptr
, PATH_SEPARATOR
);
1152 if (*dirlist_ptr
!= '\0')
1153 ldfile_add_library_path (dirlist_ptr
, true);
1156 dirlist_ptr
= p
+ 1;
1161 set_section_start (sect
, valstr
)
1162 char *sect
, *valstr
;
1165 bfd_vma val
= bfd_scan_vma (valstr
, &end
, 16);
1167 einfo (_("%P%F: invalid hex number `%s'\n"), valstr
);
1168 lang_section_start (sect
, exp_intop (val
));
1171 /* Print help messages for the options. */
1177 const char **targets
, **pp
;
1179 printf (_("Usage: %s [options] file...\n"), program_name
);
1181 printf (_("Options:\n"));
1182 for (i
= 0; i
< OPTION_COUNT
; i
++)
1184 if (ld_options
[i
].doc
!= NULL
)
1198 if (ld_options
[j
].shortopt
!= '\0'
1199 && ld_options
[j
].control
!= NO_HELP
)
1201 printf ("%s-%c", comma
? ", " : "", ld_options
[j
].shortopt
);
1202 len
+= (comma
? 2 : 0) + 2;
1203 if (ld_options
[j
].arg
!= NULL
)
1205 if (ld_options
[j
].opt
.has_arg
!= optional_argument
)
1210 printf ("%s", _(ld_options
[j
].arg
));
1211 len
+= strlen (_(ld_options
[j
].arg
));
1217 while (j
< OPTION_COUNT
&& ld_options
[j
].doc
== NULL
);
1222 if (ld_options
[j
].opt
.name
!= NULL
1223 && ld_options
[j
].control
!= NO_HELP
)
1226 (ld_options
[j
].control
== TWO_DASHES
1227 || ld_options
[j
].control
== EXACTLY_TWO_DASHES
);
1231 two_dashes
? "-" : "",
1232 ld_options
[j
].opt
.name
);
1233 len
+= ((comma
? 2 : 0)
1235 + (two_dashes
? 1 : 0)
1236 + strlen (ld_options
[j
].opt
.name
));
1237 if (ld_options
[j
].arg
!= NULL
)
1239 printf (" %s", _(ld_options
[j
].arg
));
1240 len
+= 1 + strlen (_(ld_options
[j
].arg
));
1246 while (j
< OPTION_COUNT
&& ld_options
[j
].doc
== NULL
);
1254 for (; len
< 30; len
++)
1257 printf ("%s\n", _(ld_options
[i
].doc
));
1261 /* Note: Various tools (such as libtool) depend upon the
1262 format of the listings below - do not change them. */
1263 /* xgettext:c-format */
1264 printf (_("%s: supported targets:"), program_name
);
1265 targets
= bfd_target_list ();
1266 for (pp
= targets
; *pp
!= NULL
; pp
++)
1267 printf (" %s", *pp
);
1271 /* xgettext:c-format */
1272 printf (_("%s: supported emulations: "), program_name
);
1273 ldemul_list_emulations (stdout
);
1276 /* xgettext:c-format */
1277 printf (_("%s: emulation specific options:\n"), program_name
);
1278 ldemul_list_emulation_options (stdout
);
1281 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO
);