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)
132 #define OPTION_DISCARD_NONE (OPTION_ALLOW_SHLIB_UNDEFINED + 1)
134 /* The long options. This structure is used for both the option
135 parsing and the help text. */
139 /* The long option information. */
141 /* The short option with the same meaning ('\0' if none). */
143 /* The name of the argument (NULL if none). */
145 /* The documentation string. If this is NULL, this is a synonym for
146 the previous option. */
149 /* Use one dash before long option name. */
151 /* Use two dashes before long option name. */
153 /* Only accept two dashes before the long option name.
154 This is an overloading of the use of this enum, since originally it
155 was only intended to tell the --help display function how to display
156 the long option name. This feature was added in order to resolve
157 the confusion about the -omagic command line switch. Is it setting
158 the output file name to "magic" or is it setting the NMAGIC flag on
159 the output ? It has been decided that it is setting the output file
160 name, and that if you want to set the NMAGIC flag you should use -N
163 /* Don't mention this option in --help output. */
168 static const struct ld_option ld_options
[] =
170 { {NULL
, required_argument
, NULL
, '\0'},
171 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
173 { {"architecture", required_argument
, NULL
, 'A'},
174 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES
},
175 { {"format", required_argument
, NULL
, 'b'},
176 'b', N_("TARGET"), N_("Specify target for following input files"), TWO_DASHES
},
177 { {"mri-script", required_argument
, NULL
, 'c'},
178 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES
},
179 { {"dc", no_argument
, NULL
, 'd'},
180 'd', NULL
, N_("Force common symbols to be defined"), ONE_DASH
},
181 { {"dp", no_argument
, NULL
, 'd'},
182 '\0', NULL
, NULL
, ONE_DASH
},
183 { {"entry", required_argument
, NULL
, 'e'},
184 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES
},
185 { {"export-dynamic", no_argument
, NULL
, OPTION_EXPORT_DYNAMIC
},
186 'E', NULL
, N_("Export all dynamic symbols"), TWO_DASHES
},
187 { {"EB", no_argument
, NULL
, OPTION_EB
},
188 '\0', NULL
, N_("Link big-endian objects"), ONE_DASH
},
189 { {"EL", no_argument
, NULL
, OPTION_EL
},
190 '\0', NULL
, N_("Link little-endian objects"), ONE_DASH
},
191 { {"auxiliary", required_argument
, NULL
, 'f'},
192 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
194 { {"filter", required_argument
, NULL
, 'F'},
195 'F', N_("SHLIB"), N_("Filter for shared object symbol table"), TWO_DASHES
},
196 { {NULL
, no_argument
, NULL
, '\0'},
197 'g', NULL
, N_("Ignored"), ONE_DASH
},
198 { {"gpsize", required_argument
, NULL
, 'G'},
199 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
201 { {"soname", required_argument
, NULL
, OPTION_SONAME
},
202 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH
},
203 { {"library", required_argument
, NULL
, 'l'},
204 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES
},
205 { {"library-path", required_argument
, NULL
, 'L'},
206 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES
},
207 { {NULL
, required_argument
, NULL
, '\0'},
208 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH
},
209 { {"print-map", no_argument
, NULL
, 'M'},
210 'M', NULL
, N_("Print map file on standard output"), TWO_DASHES
},
211 { {"nmagic", no_argument
, NULL
, 'n'},
212 'n', NULL
, N_("Do not page align data"), TWO_DASHES
},
213 { {"omagic", no_argument
, NULL
, 'N'},
214 'N', NULL
, N_("Do not page align data, do not make text readonly"),
215 EXACTLY_TWO_DASHES
},
216 { {"output", required_argument
, NULL
, 'o'},
217 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES
},
218 { {NULL
, required_argument
, NULL
, '\0'},
219 'O', NULL
, N_("Optimize output file"), ONE_DASH
},
220 { {"Qy", no_argument
, NULL
, OPTION_IGNORE
},
221 '\0', NULL
, N_("Ignored for SVR4 compatibility"), ONE_DASH
},
222 { {"emit-relocs", no_argument
, NULL
, 'q'},
223 'q', NULL
, "Generate relocations in final output", TWO_DASHES
},
224 { {"relocateable", no_argument
, NULL
, 'r'},
225 'r', NULL
, N_("Generate relocateable output"), TWO_DASHES
},
226 { {NULL
, no_argument
, NULL
, '\0'},
227 'i', NULL
, NULL
, ONE_DASH
},
228 { {"just-symbols", required_argument
, NULL
, 'R'},
229 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
231 { {"strip-all", no_argument
, NULL
, 's'},
232 's', NULL
, N_("Strip all symbols"), TWO_DASHES
},
233 { {"strip-debug", no_argument
, NULL
, 'S'},
234 'S', NULL
, N_("Strip debugging symbols"), TWO_DASHES
},
235 { {"trace", no_argument
, NULL
, 't'},
236 't', NULL
, N_("Trace file opens"), TWO_DASHES
},
237 { {"script", required_argument
, NULL
, 'T'},
238 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES
},
239 { {"undefined", required_argument
, NULL
, 'u'},
240 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES
},
241 { {"unique", optional_argument
, NULL
, OPTION_UNIQUE
},
242 '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES
},
243 { {"Ur", no_argument
, NULL
, OPTION_UR
},
244 '\0', NULL
, N_("Build global constructor/destructor tables"), ONE_DASH
},
245 { {"version", no_argument
, NULL
, OPTION_VERSION
},
246 'v', NULL
, N_("Print version information"), TWO_DASHES
},
247 { {NULL
, no_argument
, NULL
, '\0'},
248 'V', NULL
, N_("Print version and emulation information"), ONE_DASH
},
249 { {"discard-all", no_argument
, NULL
, 'x'},
250 'x', NULL
, N_("Discard all local symbols"), TWO_DASHES
},
251 { {"discard-locals", no_argument
, NULL
, 'X'},
252 'X', NULL
, N_("Discard temporary local symbols (default)"), TWO_DASHES
},
253 { {"discard-none", no_argument
, NULL
, OPTION_DISCARD_NONE
},
254 '\0', NULL
, N_("Don't discard any local symbols"), TWO_DASHES
},
255 { {"trace-symbol", required_argument
, NULL
, 'y'},
256 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES
},
257 { {NULL
, required_argument
, NULL
, '\0'},
258 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH
},
259 { {"start-group", no_argument
, NULL
, '('},
260 '(', NULL
, N_("Start a group"), TWO_DASHES
},
261 { {"end-group", no_argument
, NULL
, ')'},
262 ')', NULL
, N_("End a group"), TWO_DASHES
},
263 { {"assert", required_argument
, NULL
, OPTION_ASSERT
},
264 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH
},
265 { {"Bdynamic", no_argument
, NULL
, OPTION_CALL_SHARED
},
266 '\0', NULL
, N_("Link against shared libraries"), ONE_DASH
},
267 { {"dy", no_argument
, NULL
, OPTION_CALL_SHARED
},
268 '\0', NULL
, NULL
, ONE_DASH
},
269 { {"call_shared", no_argument
, NULL
, OPTION_CALL_SHARED
},
270 '\0', NULL
, NULL
, ONE_DASH
},
271 { {"Bstatic", no_argument
, NULL
, OPTION_NON_SHARED
},
272 '\0', NULL
, N_("Do not link against shared libraries"), ONE_DASH
},
273 { {"dn", no_argument
, NULL
, OPTION_NON_SHARED
},
274 '\0', NULL
, NULL
, ONE_DASH
},
275 { {"non_shared", no_argument
, NULL
, OPTION_NON_SHARED
},
276 '\0', NULL
, NULL
, ONE_DASH
},
277 { {"static", no_argument
, NULL
, OPTION_NON_SHARED
},
278 '\0', NULL
, NULL
, ONE_DASH
},
279 { {"Bsymbolic", no_argument
, NULL
, OPTION_SYMBOLIC
},
280 '\0', NULL
, N_("Bind global references locally"), ONE_DASH
},
281 { {"check-sections", no_argument
, NULL
, OPTION_CHECK_SECTIONS
},
282 '\0', NULL
, N_("Check section addresses for overlaps (default)"), TWO_DASHES
},
283 { {"no-check-sections", no_argument
, NULL
, OPTION_NO_CHECK_SECTIONS
},
284 '\0', NULL
, N_("Do not check section addresses for overlaps"),
286 { {"cref", no_argument
, NULL
, OPTION_CREF
},
287 '\0', NULL
, N_("Output cross reference table"), TWO_DASHES
},
288 { {"defsym", required_argument
, NULL
, OPTION_DEFSYM
},
289 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES
},
290 { {"demangle", optional_argument
, NULL
, OPTION_DEMANGLE
},
291 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES
},
292 { {"dynamic-linker", required_argument
, NULL
, OPTION_DYNAMIC_LINKER
},
293 '\0', N_("PROGRAM"), N_("Set the dynamic linker to use"), TWO_DASHES
},
294 { {"embedded-relocs", no_argument
, NULL
, OPTION_EMBEDDED_RELOCS
},
295 '\0', NULL
, N_("Generate embedded relocs"), TWO_DASHES
},
296 { {"fini", required_argument
, NULL
, OPTION_FINI
},
297 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH
},
298 { {"force-exe-suffix", no_argument
, NULL
, OPTION_FORCE_EXE_SUFFIX
},
299 '\0', NULL
, N_("Force generation of file with .exe suffix"), TWO_DASHES
},
300 { {"gc-sections", no_argument
, NULL
, OPTION_GC_SECTIONS
},
301 '\0', NULL
, N_("Remove unused sections (on some targets)"),
303 { {"no-gc-sections", no_argument
, NULL
, OPTION_NO_GC_SECTIONS
},
304 '\0', NULL
, N_("Don't remove unused sections (default)"),
306 { {"help", no_argument
, NULL
, OPTION_HELP
},
307 '\0', NULL
, N_("Print option help"), TWO_DASHES
},
308 { {"init", required_argument
, NULL
, OPTION_INIT
},
309 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH
},
310 { {"Map", required_argument
, NULL
, OPTION_MAP
},
311 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH
},
312 { {"no-demangle", no_argument
, NULL
, OPTION_NO_DEMANGLE
},
313 '\0', NULL
, N_("Do not demangle symbol names"), TWO_DASHES
},
314 { {"no-keep-memory", no_argument
, NULL
, OPTION_NO_KEEP_MEMORY
},
315 '\0', NULL
, N_("Use less memory and more disk I/O"), TWO_DASHES
},
316 { {"no-undefined", no_argument
, NULL
, OPTION_NO_UNDEFINED
},
317 '\0', NULL
, N_("Allow no undefined symbols"), TWO_DASHES
},
318 { {"allow-shlib-undefined", no_argument
, NULL
, OPTION_ALLOW_SHLIB_UNDEFINED
},
319 '\0', NULL
, N_("Allow undefined symbols in shared objects"), TWO_DASHES
},
320 { {"no-warn-mismatch", no_argument
, NULL
, OPTION_NO_WARN_MISMATCH
},
321 '\0', NULL
, N_("Don't warn about mismatched input files"), TWO_DASHES
},
322 { {"no-whole-archive", no_argument
, NULL
, OPTION_NO_WHOLE_ARCHIVE
},
323 '\0', NULL
, N_("Turn off --whole-archive"), TWO_DASHES
},
324 { {"noinhibit-exec", no_argument
, NULL
, OPTION_NOINHIBIT_EXEC
},
325 '\0', NULL
, N_("Create an output file even if errors occur"), TWO_DASHES
},
326 { {"noinhibit_exec", no_argument
, NULL
, OPTION_NOINHIBIT_EXEC
},
327 '\0', NULL
, NULL
, NO_HELP
},
328 { {"oformat", required_argument
, NULL
, OPTION_OFORMAT
},
329 '\0', N_("TARGET"), N_("Specify target of output file"), EXACTLY_TWO_DASHES
},
330 { {"qmagic", no_argument
, NULL
, OPTION_IGNORE
},
331 '\0', NULL
, N_("Ignored for Linux compatibility"), ONE_DASH
},
332 { {"relax", no_argument
, NULL
, OPTION_RELAX
},
333 '\0', NULL
, N_("Relax branches on certain targets"), TWO_DASHES
},
334 { {"retain-symbols-file", required_argument
, NULL
,
335 OPTION_RETAIN_SYMBOLS_FILE
},
336 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES
},
337 { {"rpath", required_argument
, NULL
, OPTION_RPATH
},
338 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH
},
339 { {"rpath-link", required_argument
, NULL
, OPTION_RPATH_LINK
},
340 '\0', N_("PATH"), N_("Set link time shared library search path"), ONE_DASH
},
341 { {"shared", no_argument
, NULL
, OPTION_SHARED
},
342 '\0', NULL
, N_("Create a shared library"), ONE_DASH
},
343 { {"Bshareable", no_argument
, NULL
, OPTION_SHARED
}, /* FreeBSD. */
344 '\0', NULL
, NULL
, ONE_DASH
},
345 { {"sort-common", no_argument
, NULL
, OPTION_SORT_COMMON
},
346 '\0', NULL
, N_("Sort common symbols by size"), TWO_DASHES
},
347 { {"sort_common", no_argument
, NULL
, OPTION_SORT_COMMON
},
348 '\0', NULL
, NULL
, NO_HELP
},
349 { {"split-by-file", optional_argument
, NULL
, OPTION_SPLIT_BY_FILE
},
350 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"), TWO_DASHES
},
351 { {"split-by-reloc", optional_argument
, NULL
, OPTION_SPLIT_BY_RELOC
},
352 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"), TWO_DASHES
},
353 { {"stats", no_argument
, NULL
, OPTION_STATS
},
354 '\0', NULL
, N_("Print memory usage statistics"), TWO_DASHES
},
355 { {"target-help", no_argument
, NULL
, OPTION_TARGET_HELP
},
356 '\0', NULL
, N_("Display target specific options"), TWO_DASHES
},
357 { {"task-link", required_argument
, NULL
, OPTION_TASK_LINK
},
358 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES
},
359 { {"traditional-format", no_argument
, NULL
, OPTION_TRADITIONAL_FORMAT
},
360 '\0', NULL
, N_("Use same format as native linker"), TWO_DASHES
},
361 { {"section-start", required_argument
, NULL
, OPTION_SECTION_START
},
362 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"), TWO_DASHES
},
363 { {"Tbss", required_argument
, NULL
, OPTION_TBSS
},
364 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH
},
365 { {"Tdata", required_argument
, NULL
, OPTION_TDATA
},
366 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH
},
367 { {"Ttext", required_argument
, NULL
, OPTION_TTEXT
},
368 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH
},
369 { {"verbose", no_argument
, NULL
, OPTION_VERBOSE
},
370 '\0', NULL
, N_("Output lots of information during link"), TWO_DASHES
},
371 { {"dll-verbose", no_argument
, NULL
, OPTION_VERBOSE
}, /* Linux. */
372 '\0', NULL
, NULL
, NO_HELP
},
373 { {"version-script", required_argument
, NULL
, OPTION_VERSION_SCRIPT
},
374 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES
},
375 { {"version-exports-section", required_argument
, NULL
,
376 OPTION_VERSION_EXPORTS_SECTION
},
377 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n\t\t\t\tSYMBOL as the version."),
379 { {"warn-common", no_argument
, NULL
, OPTION_WARN_COMMON
},
380 '\0', NULL
, N_("Warn about duplicate common symbols"), TWO_DASHES
},
381 { {"warn-constructors", no_argument
, NULL
, OPTION_WARN_CONSTRUCTORS
},
382 '\0', NULL
, N_("Warn if global constructors/destructors are seen"),
384 { {"warn-multiple-gp", no_argument
, NULL
, OPTION_WARN_MULTIPLE_GP
},
385 '\0', NULL
, N_("Warn if the multiple GP values are used"), TWO_DASHES
},
386 { {"warn-once", no_argument
, NULL
, OPTION_WARN_ONCE
},
387 '\0', NULL
, N_("Warn only once per undefined symbol"), TWO_DASHES
},
388 { {"warn-section-align", no_argument
, NULL
, OPTION_WARN_SECTION_ALIGN
},
389 '\0', NULL
, N_("Warn if start of section changes due to alignment"),
391 { {"whole-archive", no_argument
, NULL
, OPTION_WHOLE_ARCHIVE
},
392 '\0', NULL
, N_("Include all objects from following archives"), TWO_DASHES
},
393 { {"wrap", required_argument
, NULL
, OPTION_WRAP
},
394 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES
},
395 { {"mpc860c0", optional_argument
, NULL
, OPTION_MPC860C0
},
396 '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES
}
399 #define OPTION_COUNT ARRAY_SIZE (ld_options)
401 /* Test STRING for containing a string of digits that form a number
402 between MIN and MAX. The return value is the number or ERR. */
405 is_num (string
, min
, max
, err
)
413 for (; *string
; ++string
)
415 if (! isdigit (*string
))
420 result
= result
* 10 + (*string
- '0');
422 if (result
< min
|| result
> max
)
429 parse_args (argc
, argv
)
436 char *default_dirlist
= NULL
;
437 char shortopts
[OPTION_COUNT
* 3 + 2];
438 struct option longopts
[OPTION_COUNT
+ 1];
439 struct option really_longopts
[OPTION_COUNT
+ 1];
442 /* Starting the short option string with '-' is for programs that
443 expect options and other ARGV-elements in any order and that care about
444 the ordering of the two. We describe each non-option ARGV-element
445 as if it were the argument of an option with character code 1. */
450 for (i
= 0; i
< OPTION_COUNT
; i
++)
452 if (ld_options
[i
].shortopt
!= '\0')
454 shortopts
[is
] = ld_options
[i
].shortopt
;
456 if (ld_options
[i
].opt
.has_arg
== required_argument
457 || ld_options
[i
].opt
.has_arg
== optional_argument
)
461 if (ld_options
[i
].opt
.has_arg
== optional_argument
)
468 if (ld_options
[i
].opt
.name
!= NULL
)
470 if (ld_options
[i
].control
== EXACTLY_TWO_DASHES
)
472 really_longopts
[irl
] = ld_options
[i
].opt
;
477 longopts
[il
] = ld_options
[i
].opt
;
482 shortopts
[is
] = '\0';
483 longopts
[il
].name
= NULL
;
484 really_longopts
[irl
].name
= NULL
;
486 /* The -G option is ambiguous on different platforms. Sometimes it
487 specifies the largest data size to put into the small data
488 section. Sometimes it is equivalent to --shared. Unfortunately,
489 the first form takes an argument, while the second does not.
491 We need to permit the --shared form because on some platforms,
492 such as Solaris, gcc -shared will pass -G to the linker.
494 To permit either usage, we look through the argument list. If we
495 find -G not followed by a number, we change it into --shared.
496 This will work for most normal cases. */
497 for (i
= 1; i
< argc
; i
++)
498 if (strcmp (argv
[i
], "-G") == 0
500 || ! isdigit ((unsigned char) argv
[i
+ 1][0])))
501 argv
[i
] = (char *) "--shared";
503 /* Because we permit long options to start with a single dash, and
504 we have a --library option, and the -l option is conventionally
505 used with an immediately following argument, we can have bad
506 results if somebody tries to use -l with a library whose name
507 happens to start with "ibrary", as in -li. We avoid problems by
508 simply turning -l into --library. This means that users will
509 have to use two dashes in order to use --library, which is OK
510 since that's how it is documented.
512 FIXME: It's possible that this problem can arise for other short
513 options as well, although the user does always have the recourse
514 of adding a space between the option and the argument. */
515 for (i
= 1; i
< argc
; i
++)
517 if (argv
[i
][0] == '-'
519 && argv
[i
][2] != '\0')
523 n
= (char *) xmalloc (strlen (argv
[i
]) + 20);
524 sprintf (n
, "--library=%s", argv
[i
] + 2);
535 /* Using last_optind lets us avoid calling ldemul_parse_args
536 multiple times on a single option, which would lead to
537 confusion in the internal static variables maintained by
538 getopt. This could otherwise happen for an argument like
539 -nx, in which the -n is parsed as a single option, and we
540 loop around to pick up the -x. */
541 if (optind
!= last_optind
)
543 if (ldemul_parse_args (argc
, argv
))
545 last_optind
= optind
;
548 /* getopt_long_only is like getopt_long, but '-' as well as '--'
549 can indicate a long option. */
551 optc
= getopt_long_only (argc
, argv
, shortopts
, longopts
, &longind
);
555 optc
= getopt_long (argc
, argv
, shortopts
, really_longopts
, &longind
);
564 fprintf (stderr
, _("%s: unrecognized option '%s'\n"),
565 program_name
, argv
[optind
- 1]);
568 _("%s: use the --help option for usage information\n"),
571 case 1: /* File name. */
572 lang_add_input_file (optarg
, lang_input_file_is_file_enum
,
579 /* For HP/UX compatibility. Actually -a shared should mean
580 ``use only shared libraries'' but, then, we don't
581 currently support shared libraries on HP/UX anyhow. */
582 if (strcmp (optarg
, "archive") == 0)
583 config
.dynamic_link
= false;
584 else if (strcmp (optarg
, "shared") == 0
585 || strcmp (optarg
, "default") == 0)
586 config
.dynamic_link
= true;
588 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg
);
591 /* FIXME: We just ignore these, but we should handle them. */
592 if (strcmp (optarg
, "definitions") == 0)
594 else if (strcmp (optarg
, "nodefinitions") == 0)
596 else if (strcmp (optarg
, "nosymbolic") == 0)
598 else if (strcmp (optarg
, "pure-text") == 0)
601 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg
);
604 ldfile_add_arch (optarg
);
607 lang_add_target (optarg
);
610 ldfile_open_command_file (optarg
);
611 parser_input
= input_mri_script
;
614 case OPTION_CALL_SHARED
:
615 config
.dynamic_link
= true;
617 case OPTION_NON_SHARED
:
618 config
.dynamic_link
= false;
621 command_line
.cref
= true;
622 link_info
.notice_all
= true;
625 command_line
.force_common_definition
= true;
629 lex_redirect (optarg
);
630 parser_input
= input_defsym
;
636 case OPTION_DEMANGLE
:
640 enum demangling_styles style
;
642 style
= cplus_demangle_name_to_style (optarg
);
643 if (style
== unknown_demangling
)
644 einfo (_("%F%P: unknown demangling style `%s'"),
647 cplus_demangle_set_style (style
);
650 case OPTION_DYNAMIC_LINKER
:
651 command_line
.interpreter
= optarg
;
654 command_line
.endian
= ENDIAN_BIG
;
657 command_line
.endian
= ENDIAN_LITTLE
;
659 case OPTION_EMBEDDED_RELOCS
:
660 command_line
.embedded_relocs
= true;
662 case OPTION_EXPORT_DYNAMIC
:
663 case 'E': /* HP/UX compatibility. */
664 command_line
.export_dynamic
= true;
667 lang_add_entry (optarg
, true);
670 if (command_line
.auxiliary_filters
== NULL
)
672 command_line
.auxiliary_filters
=
673 (char **) xmalloc (2 * sizeof (char *));
674 command_line
.auxiliary_filters
[0] = optarg
;
675 command_line
.auxiliary_filters
[1] = NULL
;
683 for (p
= command_line
.auxiliary_filters
; *p
!= NULL
; p
++)
685 command_line
.auxiliary_filters
=
686 (char **) xrealloc (command_line
.auxiliary_filters
,
687 (c
+ 2) * sizeof (char *));
688 command_line
.auxiliary_filters
[c
] = optarg
;
689 command_line
.auxiliary_filters
[c
+ 1] = NULL
;
693 command_line
.filter_shlib
= optarg
;
695 case OPTION_FORCE_EXE_SUFFIX
:
696 command_line
.force_exe_suffix
= true;
701 g_switch_value
= strtoul (optarg
, &end
, 0);
703 einfo (_("%P%F: invalid number `%s'\n"), optarg
);
709 case OPTION_GC_SECTIONS
:
710 command_line
.gc_sections
= true;
717 ldfile_add_library_path (optarg
, true);
720 lang_add_input_file (optarg
, lang_input_file_is_l_enum
,
724 config
.map_filename
= "-";
727 /* Ignore. Was handled in a pre-parse. */
730 config
.map_filename
= optarg
;
733 config
.text_read_only
= false;
734 config
.magic_demand_paged
= false;
735 config
.dynamic_link
= false;
738 config
.magic_demand_paged
= false;
739 config
.dynamic_link
= false;
741 case OPTION_NO_DEMANGLE
:
744 case OPTION_NO_GC_SECTIONS
:
745 command_line
.gc_sections
= false;
747 case OPTION_NO_KEEP_MEMORY
:
748 link_info
.keep_memory
= false;
750 case OPTION_NO_UNDEFINED
:
751 link_info
.no_undefined
= true;
753 case OPTION_ALLOW_SHLIB_UNDEFINED
:
754 link_info
.allow_shlib_undefined
= true;
756 case OPTION_NO_WARN_MISMATCH
:
757 command_line
.warn_mismatch
= false;
759 case OPTION_NOINHIBIT_EXEC
:
760 force_make_executable
= true;
762 case OPTION_NO_WHOLE_ARCHIVE
:
763 whole_archive
= false;
766 /* FIXME "-O<non-digits> <value>" used to set the address of
767 section <non-digits>. Was this for compatibility with
768 something, or can we create a new option to do that
769 (with a syntax similar to -defsym)?
770 getopt can't handle two args to an option without kludges. */
772 /* Enable optimizations of output files. */
773 link_info
.optimize
= strtoul (optarg
, NULL
, 0) ? true : false;
776 lang_add_output (optarg
, 0);
779 lang_add_output_format (optarg
, (char *) NULL
, (char *) NULL
, 0);
782 link_info
.emitrelocations
= true;
786 link_info
.relocateable
= true;
787 config
.build_constructors
= false;
788 config
.magic_demand_paged
= false;
789 config
.text_read_only
= false;
790 config
.dynamic_link
= false;
793 /* The GNU linker traditionally uses -R to mean to include
794 only the symbols from a file. The Solaris linker uses -R
795 to set the path used by the runtime linker to find
796 libraries. This is the GNU linker -rpath argument. We
797 try to support both simultaneously by checking the file
798 named. If it is a directory, rather than a regular file,
799 we assume -rpath was meant. */
803 if (stat (optarg
, &s
) >= 0
804 && ! S_ISDIR (s
.st_mode
))
806 lang_add_input_file (optarg
,
807 lang_input_file_is_symbols_only_enum
,
814 if (command_line
.rpath
== NULL
)
815 command_line
.rpath
= buystring (optarg
);
818 size_t rpath_len
= strlen (command_line
.rpath
);
819 size_t optarg_len
= strlen (optarg
);
821 char *cp
= command_line
.rpath
;
823 /* First see whether OPTARG is already in the path. */
827 while (optarg
[idx
] != '\0' && optarg
[idx
] == cp
[idx
])
829 if (optarg
[idx
] == '\0'
830 && (cp
[idx
] == '\0' || cp
[idx
] == ':'))
835 cp
= strchr (cp
, ':');
843 buf
= xmalloc (rpath_len
+ optarg_len
+ 2);
844 sprintf (buf
, "%s:%s", command_line
.rpath
, optarg
);
845 free (command_line
.rpath
);
846 command_line
.rpath
= buf
;
850 case OPTION_RPATH_LINK
:
851 if (command_line
.rpath_link
== NULL
)
852 command_line
.rpath_link
= buystring (optarg
);
857 buf
= xmalloc (strlen (command_line
.rpath_link
)
860 sprintf (buf
, "%s:%s", command_line
.rpath_link
, optarg
);
861 free (command_line
.rpath_link
);
862 command_line
.rpath_link
= buf
;
866 command_line
.relax
= true;
868 case OPTION_RETAIN_SYMBOLS_FILE
:
869 add_keepsyms_file (optarg
);
872 link_info
.strip
= strip_debugger
;
875 link_info
.strip
= strip_all
;
878 if (config
.has_shared
)
879 link_info
.shared
= true;
881 einfo (_("%P%F: -shared not supported\n"));
883 case 'h': /* Used on Solaris. */
885 command_line
.soname
= optarg
;
887 case OPTION_SORT_COMMON
:
888 config
.sort_common
= true;
893 case OPTION_SYMBOLIC
:
894 link_info
.symbolic
= true;
900 ldfile_open_command_file (optarg
);
901 parser_input
= input_script
;
904 case OPTION_SECTION_START
:
910 /* Check for <something>=<somthing>... */
911 optarg2
= strchr (optarg
, '=');
915 _("%s: Invalid argument to option \"--section-start\"\n"),
922 /* So far so good. Are all the args present? */
923 if ((*optarg
== '\0') || (*optarg2
== '\0'))
926 _("%s: Missing argument(s) to option \"--section-start\"\n"),
931 /* We must copy the section name as set_section_start
932 doesn't do it for us. */
933 len
= optarg2
- optarg
;
934 sec_name
= xmalloc (len
);
935 memcpy (sec_name
, optarg
, len
- 1);
936 sec_name
[len
- 1] = 0;
939 set_section_start (sec_name
, optarg2
);
942 case OPTION_TARGET_HELP
:
943 /* Mention any target specific options. */
944 ldemul_list_emulation_options (stdout
);
947 set_section_start (".bss", optarg
);
950 set_section_start (".data", optarg
);
953 set_section_start (".text", optarg
);
955 case OPTION_TRADITIONAL_FORMAT
:
956 link_info
.traditional_format
= true;
958 case OPTION_TASK_LINK
:
959 link_info
.task_link
= true;
960 /* Fall through - do an implied -r option. */
962 link_info
.relocateable
= true;
963 config
.build_constructors
= true;
964 config
.magic_demand_paged
= false;
965 config
.text_read_only
= false;
966 config
.dynamic_link
= false;
969 ldlang_add_undef (optarg
);
973 lang_add_unique (optarg
);
975 config
.unique_orphan_sections
= true;
979 version_printed
= true;
980 trace_file_tries
= true;
984 version_printed
= true;
988 version_printed
= true;
991 /* This output is intended to follow the GNU standards document. */
992 printf ("GNU ld %s\n", ld_program_version
);
993 printf (_("Copyright 2001 Free Software Foundation, Inc.\n"));
995 This program is free software; you may redistribute it under the terms of\n\
996 the GNU General Public License. This program has absolutely no warranty.\n"));
998 ld_emulation_xfer_type
**ptr
= ld_emulations
;
1000 printf (_(" Supported emulations:\n"));
1003 printf (" %s\n", (*ptr
)->emulation_name
);
1009 case OPTION_VERSION_SCRIPT
:
1010 /* This option indicates a small script that only specifies
1011 version information. Read it, but don't assume that
1012 we've seen a linker script. */
1014 boolean hold_had_script
;
1016 hold_had_script
= had_script
;
1017 ldfile_open_command_file (optarg
);
1018 had_script
= hold_had_script
;
1019 parser_input
= input_version_script
;
1023 case OPTION_VERSION_EXPORTS_SECTION
:
1024 /* This option records a version symbol to be applied to the
1025 symbols listed for export to be found in the object files
1026 .exports sections. */
1027 command_line
.version_exports_section
= optarg
;
1029 case OPTION_WARN_COMMON
:
1030 config
.warn_common
= true;
1032 case OPTION_WARN_CONSTRUCTORS
:
1033 config
.warn_constructors
= true;
1035 case OPTION_WARN_MULTIPLE_GP
:
1036 config
.warn_multiple_gp
= true;
1038 case OPTION_WARN_ONCE
:
1039 config
.warn_once
= true;
1041 case OPTION_WARN_SECTION_ALIGN
:
1042 config
.warn_section_align
= true;
1044 case OPTION_WHOLE_ARCHIVE
:
1045 whole_archive
= true;
1050 case OPTION_DISCARD_NONE
:
1051 link_info
.discard
= discard_none
;
1054 link_info
.discard
= discard_l
;
1057 link_info
.discard
= discard_all
;
1060 if (strncmp (optarg
, "P,", 2) == 0)
1062 default_dirlist
= xstrdup (optarg
);
1067 case OPTION_SPLIT_BY_RELOC
:
1069 config
.split_by_reloc
= strtoul (optarg
, NULL
, 0);
1071 config
.split_by_reloc
= 32768;
1073 case OPTION_SPLIT_BY_FILE
:
1075 config
.split_by_file
= bfd_scan_vma (optarg
, NULL
, 0);
1077 config
.split_by_file
= 1;
1079 case OPTION_CHECK_SECTIONS
:
1080 command_line
.check_section_addresses
= true;
1082 case OPTION_NO_CHECK_SECTIONS
:
1083 command_line
.check_section_addresses
= false;
1089 _("%s: may not nest groups (--help for usage)\n"),
1093 lang_enter_group ();
1100 _("%s: group ended before it began (--help for usage)\n"),
1104 lang_leave_group ();
1107 case OPTION_MPC860C0
:
1108 link_info
.mpc860c0
= 20; /* default value (in bytes) */
1113 words
= is_num (optarg
, 1, 10, 0);
1117 _("%s: Invalid argument to option \"mpc860c0\"\n"),
1121 link_info
.mpc860c0
= words
* 4; /* convert words to bytes */
1123 command_line
.relax
= true;
1127 link_info
.init_function
= optarg
;
1131 link_info
.fini_function
= optarg
;
1137 lang_leave_group ();
1139 if (default_dirlist
!= NULL
)
1140 set_default_dirlist (default_dirlist
);
1144 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1145 library search path. */
1148 set_default_dirlist (dirlist_ptr
)
1155 p
= strchr (dirlist_ptr
, PATH_SEPARATOR
);
1158 if (*dirlist_ptr
!= '\0')
1159 ldfile_add_library_path (dirlist_ptr
, true);
1162 dirlist_ptr
= p
+ 1;
1167 set_section_start (sect
, valstr
)
1168 char *sect
, *valstr
;
1171 bfd_vma val
= bfd_scan_vma (valstr
, &end
, 16);
1173 einfo (_("%P%F: invalid hex number `%s'\n"), valstr
);
1174 lang_section_start (sect
, exp_intop (val
));
1177 /* Print help messages for the options. */
1183 const char **targets
, **pp
;
1185 printf (_("Usage: %s [options] file...\n"), program_name
);
1187 printf (_("Options:\n"));
1188 for (i
= 0; i
< OPTION_COUNT
; i
++)
1190 if (ld_options
[i
].doc
!= NULL
)
1204 if (ld_options
[j
].shortopt
!= '\0'
1205 && ld_options
[j
].control
!= NO_HELP
)
1207 printf ("%s-%c", comma
? ", " : "", ld_options
[j
].shortopt
);
1208 len
+= (comma
? 2 : 0) + 2;
1209 if (ld_options
[j
].arg
!= NULL
)
1211 if (ld_options
[j
].opt
.has_arg
!= optional_argument
)
1216 printf ("%s", _(ld_options
[j
].arg
));
1217 len
+= strlen (_(ld_options
[j
].arg
));
1223 while (j
< OPTION_COUNT
&& ld_options
[j
].doc
== NULL
);
1228 if (ld_options
[j
].opt
.name
!= NULL
1229 && ld_options
[j
].control
!= NO_HELP
)
1232 (ld_options
[j
].control
== TWO_DASHES
1233 || ld_options
[j
].control
== EXACTLY_TWO_DASHES
);
1237 two_dashes
? "-" : "",
1238 ld_options
[j
].opt
.name
);
1239 len
+= ((comma
? 2 : 0)
1241 + (two_dashes
? 1 : 0)
1242 + strlen (ld_options
[j
].opt
.name
));
1243 if (ld_options
[j
].arg
!= NULL
)
1245 printf (" %s", _(ld_options
[j
].arg
));
1246 len
+= 1 + strlen (_(ld_options
[j
].arg
));
1252 while (j
< OPTION_COUNT
&& ld_options
[j
].doc
== NULL
);
1260 for (; len
< 30; len
++)
1263 printf ("%s\n", _(ld_options
[i
].doc
));
1267 /* Note: Various tools (such as libtool) depend upon the
1268 format of the listings below - do not change them. */
1269 /* xgettext:c-format */
1270 printf (_("%s: supported targets:"), program_name
);
1271 targets
= bfd_target_list ();
1272 for (pp
= targets
; *pp
!= NULL
; pp
++)
1273 printf (" %s", *pp
);
1277 /* xgettext:c-format */
1278 printf (_("%s: supported emulations: "), program_name
);
1279 ldemul_list_emulations (stdout
);
1282 /* xgettext:c-format */
1283 printf (_("%s: emulation specific options:\n"), program_name
);
1284 ldemul_list_emulation_options (stdout
);
1287 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO
);