1 /* Parse options for the GNU linker.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
4 Free Software Foundation, Inc.
6 This file is part of the GNU Binutils.
8 This program 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 3 of the License, or
11 (at your option) any later version.
13 This program 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 this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
26 #include "libiberty.h"
29 #include "safe-ctype.h"
44 #ifndef PATH_SEPARATOR
45 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
46 #define PATH_SEPARATOR ';'
48 #define PATH_SEPARATOR ':'
52 /* Somewhere above, sys/stat.h got included . . . . */
53 #if !defined(S_ISDIR) && defined(S_IFDIR)
54 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
57 static void set_default_dirlist (char *);
58 static void set_section_start (char *, char *);
59 static void set_segment_start (const char *, char *);
60 static void help (void);
62 /* Non-zero if we are processing a --defsym from the command line. */
63 int parsing_defsym
= 0;
65 /* Codes used for the long options with no short synonyms. 150 isn't
66 special; it's just an arbitrary non-ASCII char value. */
74 OPTION_DYNAMIC_LINKER
,
78 OPTION_EMBEDDED_RELOCS
,
79 OPTION_EXPORT_DYNAMIC
,
80 OPTION_NO_EXPORT_DYNAMIC
,
85 OPTION_NO_KEEP_MEMORY
,
86 OPTION_NO_WARN_MISMATCH
,
87 OPTION_NO_WARN_SEARCH_MISMATCH
,
88 OPTION_NOINHIBIT_EXEC
,
90 OPTION_NO_WHOLE_ARCHIVE
,
93 OPTION_RETAIN_SYMBOLS_FILE
,
102 OPTION_SYMBOLIC_FUNCTIONS
,
107 OPTION_TTEXT_SEGMENT
,
108 OPTION_TRADITIONAL_FORMAT
,
112 OPTION_VERSION_SCRIPT
,
113 OPTION_VERSION_EXPORTS_SECTION
,
115 OPTION_DYNAMIC_LIST_CPP_NEW
,
116 OPTION_DYNAMIC_LIST_CPP_TYPEINFO
,
117 OPTION_DYNAMIC_LIST_DATA
,
119 OPTION_WARN_CONSTRUCTORS
,
121 OPTION_NO_WARN_FATAL
,
122 OPTION_WARN_MULTIPLE_GP
,
124 OPTION_WARN_SECTION_ALIGN
,
125 OPTION_SPLIT_BY_RELOC
,
126 OPTION_SPLIT_BY_FILE
,
127 OPTION_WHOLE_ARCHIVE
,
128 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC
,
129 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC
,
130 OPTION_ADD_DT_NEEDED_FOR_REGULAR
,
131 OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR
,
133 OPTION_FORCE_EXE_SUFFIX
,
135 OPTION_NO_GC_SECTIONS
,
136 OPTION_PRINT_GC_SECTIONS
,
137 OPTION_NO_PRINT_GC_SECTIONS
,
139 OPTION_CHECK_SECTIONS
,
140 OPTION_NO_CHECK_SECTIONS
,
144 OPTION_SECTION_START
,
147 OPTION_ALLOW_SHLIB_UNDEFINED
,
148 OPTION_NO_ALLOW_SHLIB_UNDEFINED
,
149 OPTION_ALLOW_MULTIPLE_DEFINITION
,
150 OPTION_NO_UNDEFINED_VERSION
,
151 OPTION_DEFAULT_SYMVER
,
152 OPTION_DEFAULT_IMPORTED_SYMVER
,
154 OPTION_SPARE_DYNAMIC_TAGS
,
155 OPTION_NO_DEFINE_COMMON
,
158 OPTION_STRIP_DISCARDED
,
159 OPTION_NO_STRIP_DISCARDED
,
160 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH
,
161 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH
,
163 OPTION_UNRESOLVED_SYMBOLS
,
164 OPTION_WARN_UNRESOLVED_SYMBOLS
,
165 OPTION_ERROR_UNRESOLVED_SYMBOLS
,
166 OPTION_WARN_SHARED_TEXTREL
,
167 OPTION_WARN_ALTERNATE_EM
,
168 OPTION_REDUCE_MEMORY_OVERHEADS
,
169 OPTION_DEFAULT_SCRIPT
172 /* The long options. This structure is used for both the option
173 parsing and the help text. */
176 /* Use one dash before long option name. */
178 /* Use two dashes before long option name. */
180 /* Only accept two dashes before the long option name.
181 This is an overloading of the use of this enum, since originally it
182 was only intended to tell the --help display function how to display
183 the long option name. This feature was added in order to resolve
184 the confusion about the -omagic command line switch. Is it setting
185 the output file name to "magic" or is it setting the NMAGIC flag on
186 the output ? It has been decided that it is setting the output file
187 name, and that if you want to set the NMAGIC flag you should use -N
190 /* Don't mention this option in --help output. */
196 /* The long option information. */
198 /* The short option with the same meaning ('\0' if none). */
200 /* The name of the argument (NULL if none). */
202 /* The documentation string. If this is NULL, this is a synonym for
203 the previous option. */
205 enum control_enum control
;
208 static const struct ld_option ld_options
[] =
210 { {NULL
, required_argument
, NULL
, '\0'},
211 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
213 { {"architecture", required_argument
, NULL
, 'A'},
214 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES
},
215 { {"format", required_argument
, NULL
, 'b'},
216 'b', N_("TARGET"), N_("Specify target for following input files"),
218 { {"mri-script", required_argument
, NULL
, 'c'},
219 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES
},
220 { {"dc", no_argument
, NULL
, 'd'},
221 'd', NULL
, N_("Force common symbols to be defined"), ONE_DASH
},
222 { {"dp", no_argument
, NULL
, 'd'},
223 '\0', NULL
, NULL
, ONE_DASH
},
224 { {"entry", required_argument
, NULL
, 'e'},
225 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES
},
226 { {"export-dynamic", no_argument
, NULL
, OPTION_EXPORT_DYNAMIC
},
227 'E', NULL
, N_("Export all dynamic symbols"), TWO_DASHES
},
228 { {"no-export-dynamic", no_argument
, NULL
, OPTION_NO_EXPORT_DYNAMIC
},
229 '\0', NULL
, N_("Undo the effect of --export-dynamic"), TWO_DASHES
},
230 { {"EB", no_argument
, NULL
, OPTION_EB
},
231 '\0', NULL
, N_("Link big-endian objects"), ONE_DASH
},
232 { {"EL", no_argument
, NULL
, OPTION_EL
},
233 '\0', NULL
, N_("Link little-endian objects"), ONE_DASH
},
234 { {"auxiliary", required_argument
, NULL
, 'f'},
235 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
237 { {"filter", required_argument
, NULL
, 'F'},
238 'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
240 { {NULL
, no_argument
, NULL
, '\0'},
241 'g', NULL
, N_("Ignored"), ONE_DASH
},
242 { {"gpsize", required_argument
, NULL
, 'G'},
243 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
245 { {"soname", required_argument
, NULL
, OPTION_SONAME
},
246 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH
},
247 { {"dynamic-linker", required_argument
, NULL
, OPTION_DYNAMIC_LINKER
},
248 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
250 { {"library", required_argument
, NULL
, 'l'},
251 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES
},
252 { {"library-path", required_argument
, NULL
, 'L'},
253 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
255 { {"sysroot=<DIRECTORY>", required_argument
, NULL
, OPTION_SYSROOT
},
256 '\0', NULL
, N_("Override the default sysroot location"), TWO_DASHES
},
257 { {NULL
, required_argument
, NULL
, '\0'},
258 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH
},
259 { {"print-map", no_argument
, NULL
, 'M'},
260 'M', NULL
, N_("Print map file on standard output"), TWO_DASHES
},
261 { {"nmagic", no_argument
, NULL
, 'n'},
262 'n', NULL
, N_("Do not page align data"), TWO_DASHES
},
263 { {"omagic", no_argument
, NULL
, 'N'},
264 'N', NULL
, N_("Do not page align data, do not make text readonly"),
265 EXACTLY_TWO_DASHES
},
266 { {"no-omagic", no_argument
, NULL
, OPTION_NO_OMAGIC
},
267 '\0', NULL
, N_("Page align data, make text readonly"),
268 EXACTLY_TWO_DASHES
},
269 { {"output", required_argument
, NULL
, 'o'},
270 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES
},
271 { {NULL
, required_argument
, NULL
, '\0'},
272 'O', NULL
, N_("Optimize output file"), ONE_DASH
},
273 { {"Qy", no_argument
, NULL
, OPTION_IGNORE
},
274 '\0', NULL
, N_("Ignored for SVR4 compatibility"), ONE_DASH
},
275 { {"emit-relocs", no_argument
, NULL
, 'q'},
276 'q', NULL
, "Generate relocations in final output", TWO_DASHES
},
277 { {"relocatable", no_argument
, NULL
, 'r'},
278 'r', NULL
, N_("Generate relocatable output"), TWO_DASHES
},
279 { {NULL
, no_argument
, NULL
, '\0'},
280 'i', NULL
, NULL
, ONE_DASH
},
281 { {"just-symbols", required_argument
, NULL
, 'R'},
282 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
284 { {"strip-all", no_argument
, NULL
, 's'},
285 's', NULL
, N_("Strip all symbols"), TWO_DASHES
},
286 { {"strip-debug", no_argument
, NULL
, 'S'},
287 'S', NULL
, N_("Strip debugging symbols"), TWO_DASHES
},
288 { {"strip-discarded", no_argument
, NULL
, OPTION_STRIP_DISCARDED
},
289 '\0', NULL
, N_("Strip symbols in discarded sections"), TWO_DASHES
},
290 { {"no-strip-discarded", no_argument
, NULL
, OPTION_NO_STRIP_DISCARDED
},
291 '\0', NULL
, N_("Do not strip symbols in discarded sections"), TWO_DASHES
},
292 { {"trace", no_argument
, NULL
, 't'},
293 't', NULL
, N_("Trace file opens"), TWO_DASHES
},
294 { {"script", required_argument
, NULL
, 'T'},
295 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES
},
296 { {"default-script", required_argument
, NULL
, OPTION_DEFAULT_SCRIPT
},
297 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES
},
298 { {"dT", required_argument
, NULL
, OPTION_DEFAULT_SCRIPT
},
299 '\0', NULL
, NULL
, ONE_DASH
},
300 { {"undefined", required_argument
, NULL
, 'u'},
301 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
303 { {"unique", optional_argument
, NULL
, OPTION_UNIQUE
},
304 '\0', N_("[=SECTION]"),
305 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES
},
306 { {"Ur", no_argument
, NULL
, OPTION_UR
},
307 '\0', NULL
, N_("Build global constructor/destructor tables"), ONE_DASH
},
308 { {"version", no_argument
, NULL
, OPTION_VERSION
},
309 'v', NULL
, N_("Print version information"), TWO_DASHES
},
310 { {NULL
, no_argument
, NULL
, '\0'},
311 'V', NULL
, N_("Print version and emulation information"), ONE_DASH
},
312 { {"discard-all", no_argument
, NULL
, 'x'},
313 'x', NULL
, N_("Discard all local symbols"), TWO_DASHES
},
314 { {"discard-locals", no_argument
, NULL
, 'X'},
315 'X', NULL
, N_("Discard temporary local symbols (default)"), TWO_DASHES
},
316 { {"discard-none", no_argument
, NULL
, OPTION_DISCARD_NONE
},
317 '\0', NULL
, N_("Don't discard any local symbols"), TWO_DASHES
},
318 { {"trace-symbol", required_argument
, NULL
, 'y'},
319 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES
},
320 { {NULL
, required_argument
, NULL
, '\0'},
321 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
323 { {"start-group", no_argument
, NULL
, '('},
324 '(', NULL
, N_("Start a group"), TWO_DASHES
},
325 { {"end-group", no_argument
, NULL
, ')'},
326 ')', NULL
, N_("End a group"), TWO_DASHES
},
327 { {"accept-unknown-input-arch", no_argument
, NULL
,
328 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH
},
330 N_("Accept input files whose architecture cannot be determined"),
332 { {"no-accept-unknown-input-arch", no_argument
, NULL
,
333 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH
},
334 '\0', NULL
, N_("Reject input files whose architecture is unknown"),
337 /* The next two options are deprecated because of their similarity to
338 --as-needed and --no-as-needed. They have been replaced by
339 --resolve-implicit-dynamic-symbols and
340 --no-resolve-implicit-dynamic-symbols. */
341 { {"add-needed", no_argument
, NULL
, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC
},
342 '\0', NULL
, NULL
, NO_HELP
},
343 { {"no-add-needed", no_argument
, NULL
, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC
},
344 '\0', NULL
, NULL
, NO_HELP
},
346 { {"as-needed", no_argument
, NULL
, OPTION_ADD_DT_NEEDED_FOR_REGULAR
},
347 '\0', NULL
, N_("Only set DT_NEEDED for following dynamic libs if used"),
349 { {"no-as-needed", no_argument
, NULL
, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR
},
350 '\0', NULL
, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
351 " the command line"),
353 { {"assert", required_argument
, NULL
, OPTION_ASSERT
},
354 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH
},
355 { {"Bdynamic", no_argument
, NULL
, OPTION_CALL_SHARED
},
356 '\0', NULL
, N_("Link against shared libraries"), ONE_DASH
},
357 { {"dy", no_argument
, NULL
, OPTION_CALL_SHARED
},
358 '\0', NULL
, NULL
, ONE_DASH
},
359 { {"call_shared", no_argument
, NULL
, OPTION_CALL_SHARED
},
360 '\0', NULL
, NULL
, ONE_DASH
},
361 { {"Bstatic", no_argument
, NULL
, OPTION_NON_SHARED
},
362 '\0', NULL
, N_("Do not link against shared libraries"), ONE_DASH
},
363 { {"dn", no_argument
, NULL
, OPTION_NON_SHARED
},
364 '\0', NULL
, NULL
, ONE_DASH
},
365 { {"non_shared", no_argument
, NULL
, OPTION_NON_SHARED
},
366 '\0', NULL
, NULL
, ONE_DASH
},
367 { {"static", no_argument
, NULL
, OPTION_NON_SHARED
},
368 '\0', NULL
, NULL
, ONE_DASH
},
369 { {"Bsymbolic", no_argument
, NULL
, OPTION_SYMBOLIC
},
370 '\0', NULL
, N_("Bind global references locally"), ONE_DASH
},
371 { {"Bsymbolic-functions", no_argument
, NULL
, OPTION_SYMBOLIC_FUNCTIONS
},
372 '\0', NULL
, N_("Bind global function references locally"), ONE_DASH
},
373 { {"check-sections", no_argument
, NULL
, OPTION_CHECK_SECTIONS
},
374 '\0', NULL
, N_("Check section addresses for overlaps (default)"),
376 { {"no-check-sections", no_argument
, NULL
, OPTION_NO_CHECK_SECTIONS
},
377 '\0', NULL
, N_("Do not check section addresses for overlaps"),
379 { {"copy-dt-needed-entries", no_argument
, NULL
,
380 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC
},
381 '\0', NULL
, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
383 { {"no-copy-dt-needed-entries", no_argument
, NULL
,
384 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC
},
385 '\0', NULL
, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
388 { {"cref", no_argument
, NULL
, OPTION_CREF
},
389 '\0', NULL
, N_("Output cross reference table"), TWO_DASHES
},
390 { {"defsym", required_argument
, NULL
, OPTION_DEFSYM
},
391 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES
},
392 { {"demangle", optional_argument
, NULL
, OPTION_DEMANGLE
},
393 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
395 { {"embedded-relocs", no_argument
, NULL
, OPTION_EMBEDDED_RELOCS
},
396 '\0', NULL
, N_("Generate embedded relocs"), TWO_DASHES
},
397 { {"fatal-warnings", no_argument
, NULL
, OPTION_WARN_FATAL
},
398 '\0', NULL
, N_("Treat warnings as errors"),
400 { {"no-fatal-warnings", no_argument
, NULL
, OPTION_NO_WARN_FATAL
},
401 '\0', NULL
, N_("Do not treat warnings as errors (default)"),
403 { {"fini", required_argument
, NULL
, OPTION_FINI
},
404 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH
},
405 { {"force-exe-suffix", no_argument
, NULL
, OPTION_FORCE_EXE_SUFFIX
},
406 '\0', NULL
, N_("Force generation of file with .exe suffix"), TWO_DASHES
},
407 { {"gc-sections", no_argument
, NULL
, OPTION_GC_SECTIONS
},
408 '\0', NULL
, N_("Remove unused sections (on some targets)"),
410 { {"no-gc-sections", no_argument
, NULL
, OPTION_NO_GC_SECTIONS
},
411 '\0', NULL
, N_("Don't remove unused sections (default)"),
413 { {"print-gc-sections", no_argument
, NULL
, OPTION_PRINT_GC_SECTIONS
},
414 '\0', NULL
, N_("List removed unused sections on stderr"),
416 { {"no-print-gc-sections", no_argument
, NULL
, OPTION_NO_PRINT_GC_SECTIONS
},
417 '\0', NULL
, N_("Do not list removed unused sections"),
419 { {"hash-size=<NUMBER>", required_argument
, NULL
, OPTION_HASH_SIZE
},
420 '\0', NULL
, N_("Set default hash table size close to <NUMBER>"),
422 { {"help", no_argument
, NULL
, OPTION_HELP
},
423 '\0', NULL
, N_("Print option help"), TWO_DASHES
},
424 { {"init", required_argument
, NULL
, OPTION_INIT
},
425 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH
},
426 { {"Map", required_argument
, NULL
, OPTION_MAP
},
427 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH
},
428 { {"no-define-common", no_argument
, NULL
, OPTION_NO_DEFINE_COMMON
},
429 '\0', NULL
, N_("Do not define Common storage"), TWO_DASHES
},
430 { {"no-demangle", no_argument
, NULL
, OPTION_NO_DEMANGLE
},
431 '\0', NULL
, N_("Do not demangle symbol names"), TWO_DASHES
},
432 { {"no-keep-memory", no_argument
, NULL
, OPTION_NO_KEEP_MEMORY
},
433 '\0', NULL
, N_("Use less memory and more disk I/O"), TWO_DASHES
},
434 { {"no-undefined", no_argument
, NULL
, OPTION_NO_UNDEFINED
},
435 '\0', NULL
, N_("Do not allow unresolved references in object files"),
437 { {"allow-shlib-undefined", no_argument
, NULL
, OPTION_ALLOW_SHLIB_UNDEFINED
},
438 '\0', NULL
, N_("Allow unresolved references in shared libaries"),
440 { {"no-allow-shlib-undefined", no_argument
, NULL
,
441 OPTION_NO_ALLOW_SHLIB_UNDEFINED
},
442 '\0', NULL
, N_("Do not allow unresolved references in shared libs"),
444 { {"allow-multiple-definition", no_argument
, NULL
,
445 OPTION_ALLOW_MULTIPLE_DEFINITION
},
446 '\0', NULL
, N_("Allow multiple definitions"), TWO_DASHES
},
447 { {"no-undefined-version", no_argument
, NULL
, OPTION_NO_UNDEFINED_VERSION
},
448 '\0', NULL
, N_("Disallow undefined version"), TWO_DASHES
},
449 { {"default-symver", no_argument
, NULL
, OPTION_DEFAULT_SYMVER
},
450 '\0', NULL
, N_("Create default symbol version"), TWO_DASHES
},
451 { {"default-imported-symver", no_argument
, NULL
,
452 OPTION_DEFAULT_IMPORTED_SYMVER
},
453 '\0', NULL
, N_("Create default symbol version for imported symbols"),
455 { {"no-warn-mismatch", no_argument
, NULL
, OPTION_NO_WARN_MISMATCH
},
456 '\0', NULL
, N_("Don't warn about mismatched input files"), TWO_DASHES
},
457 { {"no-warn-search-mismatch", no_argument
, NULL
,
458 OPTION_NO_WARN_SEARCH_MISMATCH
},
459 '\0', NULL
, N_("Don't warn on finding an incompatible library"),
461 { {"no-whole-archive", no_argument
, NULL
, OPTION_NO_WHOLE_ARCHIVE
},
462 '\0', NULL
, N_("Turn off --whole-archive"), TWO_DASHES
},
463 { {"noinhibit-exec", no_argument
, NULL
, OPTION_NOINHIBIT_EXEC
},
464 '\0', NULL
, N_("Create an output file even if errors occur"),
466 { {"noinhibit_exec", no_argument
, NULL
, OPTION_NOINHIBIT_EXEC
},
467 '\0', NULL
, NULL
, NO_HELP
},
468 { {"nostdlib", no_argument
, NULL
, OPTION_NOSTDLIB
},
469 '\0', NULL
, N_("Only use library directories specified on\n"
470 " the command line"),
472 { {"oformat", required_argument
, NULL
, OPTION_OFORMAT
},
473 '\0', N_("TARGET"), N_("Specify target of output file"),
474 EXACTLY_TWO_DASHES
},
475 { {"qmagic", no_argument
, NULL
, OPTION_IGNORE
},
476 '\0', NULL
, N_("Ignored for Linux compatibility"), ONE_DASH
},
477 { {"reduce-memory-overheads", no_argument
, NULL
,
478 OPTION_REDUCE_MEMORY_OVERHEADS
},
479 '\0', NULL
, N_("Reduce memory overheads, possibly taking much longer"),
481 { {"relax", no_argument
, NULL
, OPTION_RELAX
},
482 '\0', NULL
, N_("Relax branches on certain targets"), TWO_DASHES
},
483 { {"retain-symbols-file", required_argument
, NULL
,
484 OPTION_RETAIN_SYMBOLS_FILE
},
485 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES
},
486 { {"rpath", required_argument
, NULL
, OPTION_RPATH
},
487 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH
},
488 { {"rpath-link", required_argument
, NULL
, OPTION_RPATH_LINK
},
489 '\0', N_("PATH"), N_("Set link time shared library search path"),
491 { {"shared", no_argument
, NULL
, OPTION_SHARED
},
492 '\0', NULL
, N_("Create a shared library"), ONE_DASH
},
493 { {"Bshareable", no_argument
, NULL
, OPTION_SHARED
}, /* FreeBSD. */
494 '\0', NULL
, NULL
, ONE_DASH
},
495 { {"pie", no_argument
, NULL
, OPTION_PIE
},
496 '\0', NULL
, N_("Create a position independent executable"), ONE_DASH
},
497 { {"pic-executable", no_argument
, NULL
, OPTION_PIE
},
498 '\0', NULL
, NULL
, TWO_DASHES
},
499 { {"sort-common", optional_argument
, NULL
, OPTION_SORT_COMMON
},
500 '\0', N_("[=ascending|descending]"),
501 N_("Sort common symbols by alignment [in specified order]"),
503 { {"sort_common", no_argument
, NULL
, OPTION_SORT_COMMON
},
504 '\0', NULL
, NULL
, NO_HELP
},
505 { {"sort-section", required_argument
, NULL
, OPTION_SORT_SECTION
},
506 '\0', N_("name|alignment"),
507 N_("Sort sections by name or maximum alignment"), TWO_DASHES
},
508 { {"spare-dynamic-tags", required_argument
, NULL
, OPTION_SPARE_DYNAMIC_TAGS
},
509 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
511 { {"split-by-file", optional_argument
, NULL
, OPTION_SPLIT_BY_FILE
},
512 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
514 { {"split-by-reloc", optional_argument
, NULL
, OPTION_SPLIT_BY_RELOC
},
515 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
517 { {"stats", no_argument
, NULL
, OPTION_STATS
},
518 '\0', NULL
, N_("Print memory usage statistics"), TWO_DASHES
},
519 { {"target-help", no_argument
, NULL
, OPTION_TARGET_HELP
},
520 '\0', NULL
, N_("Display target specific options"), TWO_DASHES
},
521 { {"task-link", required_argument
, NULL
, OPTION_TASK_LINK
},
522 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES
},
523 { {"traditional-format", no_argument
, NULL
, OPTION_TRADITIONAL_FORMAT
},
524 '\0', NULL
, N_("Use same format as native linker"), TWO_DASHES
},
525 { {"section-start", required_argument
, NULL
, OPTION_SECTION_START
},
526 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
528 { {"Tbss", required_argument
, NULL
, OPTION_TBSS
},
529 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH
},
530 { {"Tdata", required_argument
, NULL
, OPTION_TDATA
},
531 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH
},
532 { {"Ttext", required_argument
, NULL
, OPTION_TTEXT
},
533 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH
},
534 { {"Ttext-segment", required_argument
, NULL
, OPTION_TTEXT_SEGMENT
},
535 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH
},
536 { {"unresolved-symbols=<method>", required_argument
, NULL
,
537 OPTION_UNRESOLVED_SYMBOLS
},
538 '\0', NULL
, N_("How to handle unresolved symbols. <method> is:\n"
539 " ignore-all, report-all, ignore-in-object-files,\n"
540 " ignore-in-shared-libs"),
542 { {"verbose", no_argument
, NULL
, OPTION_VERBOSE
},
543 '\0', NULL
, N_("Output lots of information during link"), TWO_DASHES
},
544 { {"dll-verbose", no_argument
, NULL
, OPTION_VERBOSE
}, /* Linux. */
545 '\0', NULL
, NULL
, NO_HELP
},
546 { {"version-script", required_argument
, NULL
, OPTION_VERSION_SCRIPT
},
547 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES
},
548 { {"version-exports-section", required_argument
, NULL
,
549 OPTION_VERSION_EXPORTS_SECTION
},
550 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
551 " SYMBOL as the version."),
553 { {"dynamic-list-data", no_argument
, NULL
, OPTION_DYNAMIC_LIST_DATA
},
554 '\0', NULL
, N_("Add data symbols to dynamic list"), TWO_DASHES
},
555 { {"dynamic-list-cpp-new", no_argument
, NULL
, OPTION_DYNAMIC_LIST_CPP_NEW
},
556 '\0', NULL
, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES
},
557 { {"dynamic-list-cpp-typeinfo", no_argument
, NULL
, OPTION_DYNAMIC_LIST_CPP_TYPEINFO
},
558 '\0', NULL
, N_("Use C++ typeinfo dynamic list"), TWO_DASHES
},
559 { {"dynamic-list", required_argument
, NULL
, OPTION_DYNAMIC_LIST
},
560 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES
},
561 { {"warn-common", no_argument
, NULL
, OPTION_WARN_COMMON
},
562 '\0', NULL
, N_("Warn about duplicate common symbols"), TWO_DASHES
},
563 { {"warn-constructors", no_argument
, NULL
, OPTION_WARN_CONSTRUCTORS
},
564 '\0', NULL
, N_("Warn if global constructors/destructors are seen"),
566 { {"warn-multiple-gp", no_argument
, NULL
, OPTION_WARN_MULTIPLE_GP
},
567 '\0', NULL
, N_("Warn if the multiple GP values are used"), TWO_DASHES
},
568 { {"warn-once", no_argument
, NULL
, OPTION_WARN_ONCE
},
569 '\0', NULL
, N_("Warn only once per undefined symbol"), TWO_DASHES
},
570 { {"warn-section-align", no_argument
, NULL
, OPTION_WARN_SECTION_ALIGN
},
571 '\0', NULL
, N_("Warn if start of section changes due to alignment"),
573 { {"warn-shared-textrel", no_argument
, NULL
, OPTION_WARN_SHARED_TEXTREL
},
574 '\0', NULL
, N_("Warn if shared object has DT_TEXTREL"),
576 { {"warn-alternate-em", no_argument
, NULL
, OPTION_WARN_ALTERNATE_EM
},
577 '\0', NULL
, N_("Warn if an object has alternate ELF machine code"),
579 { {"warn-unresolved-symbols", no_argument
, NULL
,
580 OPTION_WARN_UNRESOLVED_SYMBOLS
},
581 '\0', NULL
, N_("Report unresolved symbols as warnings"), TWO_DASHES
},
582 { {"error-unresolved-symbols", no_argument
, NULL
,
583 OPTION_ERROR_UNRESOLVED_SYMBOLS
},
584 '\0', NULL
, N_("Report unresolved symbols as errors"), TWO_DASHES
},
585 { {"whole-archive", no_argument
, NULL
, OPTION_WHOLE_ARCHIVE
},
586 '\0', NULL
, N_("Include all objects from following archives"),
588 { {"wrap", required_argument
, NULL
, OPTION_WRAP
},
589 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES
},
592 #define OPTION_COUNT ARRAY_SIZE (ld_options)
595 parse_args (unsigned argc
, char **argv
)
600 char *default_dirlist
= NULL
;
602 struct option
*longopts
;
603 struct option
*really_longopts
;
605 enum report_method how_to_report_unresolved_symbols
= RM_GENERATE_ERROR
;
607 shortopts
= (char *) xmalloc (OPTION_COUNT
* 3 + 2);
608 longopts
= (struct option
*)
609 xmalloc (sizeof (*longopts
) * (OPTION_COUNT
+ 1));
610 really_longopts
= (struct option
*)
611 malloc (sizeof (*really_longopts
) * (OPTION_COUNT
+ 1));
613 /* Starting the short option string with '-' is for programs that
614 expect options and other ARGV-elements in any order and that care about
615 the ordering of the two. We describe each non-option ARGV-element
616 as if it were the argument of an option with character code 1. */
621 for (i
= 0; i
< OPTION_COUNT
; i
++)
623 if (ld_options
[i
].shortopt
!= '\0')
625 shortopts
[is
] = ld_options
[i
].shortopt
;
627 if (ld_options
[i
].opt
.has_arg
== required_argument
628 || ld_options
[i
].opt
.has_arg
== optional_argument
)
632 if (ld_options
[i
].opt
.has_arg
== optional_argument
)
639 if (ld_options
[i
].opt
.name
!= NULL
)
641 if (ld_options
[i
].control
== EXACTLY_TWO_DASHES
)
643 really_longopts
[irl
] = ld_options
[i
].opt
;
648 longopts
[il
] = ld_options
[i
].opt
;
653 shortopts
[is
] = '\0';
654 longopts
[il
].name
= NULL
;
655 really_longopts
[irl
].name
= NULL
;
657 ldemul_add_options (is
, &shortopts
, il
, &longopts
, irl
, &really_longopts
);
659 /* The -G option is ambiguous on different platforms. Sometimes it
660 specifies the largest data size to put into the small data
661 section. Sometimes it is equivalent to --shared. Unfortunately,
662 the first form takes an argument, while the second does not.
664 We need to permit the --shared form because on some platforms,
665 such as Solaris, gcc -shared will pass -G to the linker.
667 To permit either usage, we look through the argument list. If we
668 find -G not followed by a number, we change it into --shared.
669 This will work for most normal cases. */
670 for (i
= 1; i
< argc
; i
++)
671 if (strcmp (argv
[i
], "-G") == 0
673 || ! ISDIGIT (argv
[i
+ 1][0])))
674 argv
[i
] = (char *) "--shared";
676 /* Because we permit long options to start with a single dash, and
677 we have a --library option, and the -l option is conventionally
678 used with an immediately following argument, we can have bad
679 results if somebody tries to use -l with a library whose name
680 happens to start with "ibrary", as in -li. We avoid problems by
681 simply turning -l into --library. This means that users will
682 have to use two dashes in order to use --library, which is OK
683 since that's how it is documented.
685 FIXME: It's possible that this problem can arise for other short
686 options as well, although the user does always have the recourse
687 of adding a space between the option and the argument. */
688 for (i
= 1; i
< argc
; i
++)
690 if (argv
[i
][0] == '-'
692 && argv
[i
][2] != '\0')
696 n
= (char *) xmalloc (strlen (argv
[i
]) + 20);
697 sprintf (n
, "--library=%s", argv
[i
] + 2);
708 /* Using last_optind lets us avoid calling ldemul_parse_args
709 multiple times on a single option, which would lead to
710 confusion in the internal static variables maintained by
711 getopt. This could otherwise happen for an argument like
712 -nx, in which the -n is parsed as a single option, and we
713 loop around to pick up the -x. */
714 if (optind
!= last_optind
)
715 if (ldemul_parse_args (argc
, argv
))
718 /* getopt_long_only is like getopt_long, but '-' as well as '--'
719 can indicate a long option. */
721 last_optind
= optind
;
722 optc
= getopt_long_only (argc
, argv
, shortopts
, longopts
, &longind
);
725 optind
= last_optind
;
726 optc
= getopt_long (argc
, argv
, "-", really_longopts
, &longind
);
729 if (ldemul_handle_option (optc
))
738 einfo (_("%P: unrecognized option '%s'\n"), argv
[last_optind
]);
742 einfo (_("%P%F: use the --help option for usage information\n"));
744 case 1: /* File name. */
745 lang_add_input_file (optarg
, lang_input_file_is_file_enum
, NULL
);
751 /* For HP/UX compatibility. Actually -a shared should mean
752 ``use only shared libraries'' but, then, we don't
753 currently support shared libraries on HP/UX anyhow. */
754 if (strcmp (optarg
, "archive") == 0)
755 config
.dynamic_link
= FALSE
;
756 else if (strcmp (optarg
, "shared") == 0
757 || strcmp (optarg
, "default") == 0)
758 config
.dynamic_link
= TRUE
;
760 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg
);
763 /* FIXME: We just ignore these, but we should handle them. */
764 if (strcmp (optarg
, "definitions") == 0)
766 else if (strcmp (optarg
, "nodefinitions") == 0)
768 else if (strcmp (optarg
, "nosymbolic") == 0)
770 else if (strcmp (optarg
, "pure-text") == 0)
773 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg
);
776 ldfile_add_arch (optarg
);
779 lang_add_target (optarg
);
782 ldfile_open_command_file (optarg
);
783 parser_input
= input_mri_script
;
786 case OPTION_CALL_SHARED
:
787 config
.dynamic_link
= TRUE
;
789 case OPTION_NON_SHARED
:
790 config
.dynamic_link
= FALSE
;
793 command_line
.cref
= TRUE
;
794 link_info
.notice_all
= TRUE
;
797 command_line
.force_common_definition
= TRUE
;
801 lex_redirect (optarg
);
802 parser_input
= input_defsym
;
808 case OPTION_DEMANGLE
:
812 enum demangling_styles style
;
814 style
= cplus_demangle_name_to_style (optarg
);
815 if (style
== unknown_demangling
)
816 einfo (_("%F%P: unknown demangling style `%s'"),
819 cplus_demangle_set_style (style
);
822 case 'I': /* Used on Solaris. */
823 case OPTION_DYNAMIC_LINKER
:
824 command_line
.interpreter
= optarg
;
827 /* Already handled in ldmain.c. */
830 command_line
.endian
= ENDIAN_BIG
;
833 command_line
.endian
= ENDIAN_LITTLE
;
835 case OPTION_EMBEDDED_RELOCS
:
836 command_line
.embedded_relocs
= TRUE
;
838 case OPTION_EXPORT_DYNAMIC
:
839 case 'E': /* HP/UX compatibility. */
840 link_info
.export_dynamic
= TRUE
;
842 case OPTION_NO_EXPORT_DYNAMIC
:
843 link_info
.export_dynamic
= FALSE
;
846 lang_add_entry (optarg
, TRUE
);
849 if (command_line
.auxiliary_filters
== NULL
)
851 command_line
.auxiliary_filters
= (char **)
852 xmalloc (2 * sizeof (char *));
853 command_line
.auxiliary_filters
[0] = optarg
;
854 command_line
.auxiliary_filters
[1] = NULL
;
862 for (p
= command_line
.auxiliary_filters
; *p
!= NULL
; p
++)
864 command_line
.auxiliary_filters
= (char **)
865 xrealloc (command_line
.auxiliary_filters
,
866 (c
+ 2) * sizeof (char *));
867 command_line
.auxiliary_filters
[c
] = optarg
;
868 command_line
.auxiliary_filters
[c
+ 1] = NULL
;
872 command_line
.filter_shlib
= optarg
;
874 case OPTION_FORCE_EXE_SUFFIX
:
875 command_line
.force_exe_suffix
= TRUE
;
880 g_switch_value
= strtoul (optarg
, &end
, 0);
882 einfo (_("%P%F: invalid number `%s'\n"), optarg
);
888 case OPTION_GC_SECTIONS
:
889 link_info
.gc_sections
= TRUE
;
891 case OPTION_PRINT_GC_SECTIONS
:
892 link_info
.print_gc_sections
= TRUE
;
899 ldfile_add_library_path (optarg
, TRUE
);
902 lang_add_input_file (optarg
, lang_input_file_is_l_enum
, NULL
);
905 config
.map_filename
= "-";
908 /* Ignore. Was handled in a pre-parse. */
911 config
.map_filename
= optarg
;
914 config
.text_read_only
= FALSE
;
915 config
.magic_demand_paged
= FALSE
;
916 config
.dynamic_link
= FALSE
;
918 case OPTION_NO_OMAGIC
:
919 config
.text_read_only
= TRUE
;
920 config
.magic_demand_paged
= TRUE
;
921 /* NB/ Does not set dynamic_link to TRUE.
922 Use --call-shared or -Bdynamic for this. */
925 config
.magic_demand_paged
= FALSE
;
926 config
.dynamic_link
= FALSE
;
928 case OPTION_NO_DEFINE_COMMON
:
929 command_line
.inhibit_common_definition
= TRUE
;
931 case OPTION_NO_DEMANGLE
:
934 case OPTION_NO_GC_SECTIONS
:
935 link_info
.gc_sections
= FALSE
;
937 case OPTION_NO_PRINT_GC_SECTIONS
:
938 link_info
.print_gc_sections
= FALSE
;
940 case OPTION_NO_KEEP_MEMORY
:
941 link_info
.keep_memory
= FALSE
;
943 case OPTION_NO_UNDEFINED
:
944 link_info
.unresolved_syms_in_objects
945 = how_to_report_unresolved_symbols
;
947 case OPTION_ALLOW_SHLIB_UNDEFINED
:
948 link_info
.unresolved_syms_in_shared_libs
= RM_IGNORE
;
950 case OPTION_NO_ALLOW_SHLIB_UNDEFINED
:
951 link_info
.unresolved_syms_in_shared_libs
952 = how_to_report_unresolved_symbols
;
954 case OPTION_UNRESOLVED_SYMBOLS
:
955 if (strcmp (optarg
, "ignore-all") == 0)
957 link_info
.unresolved_syms_in_objects
= RM_IGNORE
;
958 link_info
.unresolved_syms_in_shared_libs
= RM_IGNORE
;
960 else if (strcmp (optarg
, "report-all") == 0)
962 link_info
.unresolved_syms_in_objects
963 = how_to_report_unresolved_symbols
;
964 link_info
.unresolved_syms_in_shared_libs
965 = how_to_report_unresolved_symbols
;
967 else if (strcmp (optarg
, "ignore-in-object-files") == 0)
969 link_info
.unresolved_syms_in_objects
= RM_IGNORE
;
970 link_info
.unresolved_syms_in_shared_libs
971 = how_to_report_unresolved_symbols
;
973 else if (strcmp (optarg
, "ignore-in-shared-libs") == 0)
975 link_info
.unresolved_syms_in_objects
976 = how_to_report_unresolved_symbols
;
977 link_info
.unresolved_syms_in_shared_libs
= RM_IGNORE
;
980 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg
);
982 case OPTION_WARN_UNRESOLVED_SYMBOLS
:
983 how_to_report_unresolved_symbols
= RM_GENERATE_WARNING
;
984 if (link_info
.unresolved_syms_in_objects
== RM_GENERATE_ERROR
)
985 link_info
.unresolved_syms_in_objects
= RM_GENERATE_WARNING
;
986 if (link_info
.unresolved_syms_in_shared_libs
== RM_GENERATE_ERROR
)
987 link_info
.unresolved_syms_in_shared_libs
= RM_GENERATE_WARNING
;
990 case OPTION_ERROR_UNRESOLVED_SYMBOLS
:
991 how_to_report_unresolved_symbols
= RM_GENERATE_ERROR
;
992 if (link_info
.unresolved_syms_in_objects
== RM_GENERATE_WARNING
)
993 link_info
.unresolved_syms_in_objects
= RM_GENERATE_ERROR
;
994 if (link_info
.unresolved_syms_in_shared_libs
== RM_GENERATE_WARNING
)
995 link_info
.unresolved_syms_in_shared_libs
= RM_GENERATE_ERROR
;
997 case OPTION_ALLOW_MULTIPLE_DEFINITION
:
998 link_info
.allow_multiple_definition
= TRUE
;
1000 case OPTION_NO_UNDEFINED_VERSION
:
1001 link_info
.allow_undefined_version
= FALSE
;
1003 case OPTION_DEFAULT_SYMVER
:
1004 link_info
.create_default_symver
= TRUE
;
1006 case OPTION_DEFAULT_IMPORTED_SYMVER
:
1007 link_info
.default_imported_symver
= TRUE
;
1009 case OPTION_NO_WARN_MISMATCH
:
1010 command_line
.warn_mismatch
= FALSE
;
1012 case OPTION_NO_WARN_SEARCH_MISMATCH
:
1013 command_line
.warn_search_mismatch
= FALSE
;
1015 case OPTION_NOINHIBIT_EXEC
:
1016 force_make_executable
= TRUE
;
1018 case OPTION_NOSTDLIB
:
1019 config
.only_cmd_line_lib_dirs
= TRUE
;
1021 case OPTION_NO_WHOLE_ARCHIVE
:
1022 whole_archive
= FALSE
;
1025 /* FIXME "-O<non-digits> <value>" used to set the address of
1026 section <non-digits>. Was this for compatibility with
1027 something, or can we create a new option to do that
1028 (with a syntax similar to -defsym)?
1029 getopt can't handle two args to an option without kludges. */
1031 /* Enable optimizations of output files. */
1032 link_info
.optimize
= strtoul (optarg
, NULL
, 0) ? TRUE
: FALSE
;
1035 lang_add_output (optarg
, 0);
1037 case OPTION_OFORMAT
:
1038 lang_add_output_format (optarg
, NULL
, NULL
, 0);
1041 link_info
.emitrelocations
= TRUE
;
1045 if (optind
== last_optind
)
1046 /* This can happen if the user put "-rpath,a" on the command
1047 line. (Or something similar. The comma is important).
1048 Getopt becomes confused and thinks that this is a -r option
1049 but it cannot parse the text after the -r so it refuses to
1050 increment the optind counter. Detect this case and issue
1051 an error message here. We cannot just make this a warning,
1052 increment optind, and continue because getopt is too confused
1053 and will seg-fault the next time around. */
1054 einfo(_("%P%F: bad -rpath option\n"));
1056 link_info
.relocatable
= TRUE
;
1057 config
.build_constructors
= FALSE
;
1058 config
.magic_demand_paged
= FALSE
;
1059 config
.text_read_only
= FALSE
;
1060 config
.dynamic_link
= FALSE
;
1063 /* The GNU linker traditionally uses -R to mean to include
1064 only the symbols from a file. The Solaris linker uses -R
1065 to set the path used by the runtime linker to find
1066 libraries. This is the GNU linker -rpath argument. We
1067 try to support both simultaneously by checking the file
1068 named. If it is a directory, rather than a regular file,
1069 we assume -rpath was meant. */
1073 if (stat (optarg
, &s
) >= 0
1074 && ! S_ISDIR (s
.st_mode
))
1076 lang_add_input_file (optarg
,
1077 lang_input_file_is_symbols_only_enum
,
1084 if (command_line
.rpath
== NULL
)
1085 command_line
.rpath
= xstrdup (optarg
);
1088 size_t rpath_len
= strlen (command_line
.rpath
);
1089 size_t optarg_len
= strlen (optarg
);
1091 char *cp
= command_line
.rpath
;
1093 /* First see whether OPTARG is already in the path. */
1096 if (strncmp (optarg
, cp
, optarg_len
) == 0
1097 && (cp
[optarg_len
] == 0
1098 || cp
[optarg_len
] == config
.rpath_separator
))
1102 /* Not yet found. */
1103 cp
= strchr (cp
, config
.rpath_separator
);
1111 buf
= (char *) xmalloc (rpath_len
+ optarg_len
+ 2);
1112 sprintf (buf
, "%s%c%s", command_line
.rpath
,
1113 config
.rpath_separator
, optarg
);
1114 free (command_line
.rpath
);
1115 command_line
.rpath
= buf
;
1119 case OPTION_RPATH_LINK
:
1120 if (command_line
.rpath_link
== NULL
)
1121 command_line
.rpath_link
= xstrdup (optarg
);
1126 buf
= (char *) xmalloc (strlen (command_line
.rpath_link
)
1129 sprintf (buf
, "%s%c%s", command_line
.rpath_link
,
1130 config
.rpath_separator
, optarg
);
1131 free (command_line
.rpath_link
);
1132 command_line
.rpath_link
= buf
;
1136 command_line
.relax
= TRUE
;
1138 case OPTION_RETAIN_SYMBOLS_FILE
:
1139 add_keepsyms_file (optarg
);
1142 link_info
.strip
= strip_debugger
;
1145 link_info
.strip
= strip_all
;
1147 case OPTION_STRIP_DISCARDED
:
1148 link_info
.strip_discarded
= TRUE
;
1150 case OPTION_NO_STRIP_DISCARDED
:
1151 link_info
.strip_discarded
= FALSE
;
1154 if (config
.has_shared
)
1156 link_info
.shared
= TRUE
;
1157 /* When creating a shared library, the default
1158 behaviour is to ignore any unresolved references. */
1159 if (link_info
.unresolved_syms_in_objects
== RM_NOT_YET_SET
)
1160 link_info
.unresolved_syms_in_objects
= RM_IGNORE
;
1161 if (link_info
.unresolved_syms_in_shared_libs
== RM_NOT_YET_SET
)
1162 link_info
.unresolved_syms_in_shared_libs
= RM_IGNORE
;
1165 einfo (_("%P%F: -shared not supported\n"));
1168 if (config
.has_shared
)
1170 link_info
.shared
= TRUE
;
1171 link_info
.pie
= TRUE
;
1174 einfo (_("%P%F: -pie not supported\n"));
1176 case 'h': /* Used on Solaris. */
1178 command_line
.soname
= optarg
;
1180 case OPTION_SORT_COMMON
:
1182 || strcmp (optarg
, N_("descending")) == 0)
1183 config
.sort_common
= sort_descending
;
1184 else if (strcmp (optarg
, N_("ascending")) == 0)
1185 config
.sort_common
= sort_ascending
;
1187 einfo (_("%P%F: invalid common section sorting option: %s\n"),
1190 case OPTION_SORT_SECTION
:
1191 if (strcmp (optarg
, N_("name")) == 0)
1192 sort_section
= by_name
;
1193 else if (strcmp (optarg
, N_("alignment")) == 0)
1194 sort_section
= by_alignment
;
1196 einfo (_("%P%F: invalid section sorting option: %s\n"),
1200 config
.stats
= TRUE
;
1202 case OPTION_SYMBOLIC
:
1203 command_line
.symbolic
= symbolic
;
1205 case OPTION_SYMBOLIC_FUNCTIONS
:
1206 command_line
.symbolic
= symbolic_functions
;
1212 previous_script_handle
= saved_script_handle
;
1213 ldfile_open_command_file (optarg
);
1214 parser_input
= input_script
;
1216 previous_script_handle
= NULL
;
1218 case OPTION_DEFAULT_SCRIPT
:
1219 command_line
.default_script
= optarg
;
1221 case OPTION_SECTION_START
:
1227 /* Check for <something>=<somthing>... */
1228 optarg2
= strchr (optarg
, '=');
1229 if (optarg2
== NULL
)
1230 einfo (_("%P%F: invalid argument to option"
1231 " \"--section-start\"\n"));
1235 /* So far so good. Are all the args present? */
1236 if ((*optarg
== '\0') || (*optarg2
== '\0'))
1237 einfo (_("%P%F: missing argument(s) to option"
1238 " \"--section-start\"\n"));
1240 /* We must copy the section name as set_section_start
1241 doesn't do it for us. */
1242 len
= optarg2
- optarg
;
1243 sec_name
= (char *) xmalloc (len
);
1244 memcpy (sec_name
, optarg
, len
- 1);
1245 sec_name
[len
- 1] = 0;
1247 /* Then set it... */
1248 set_section_start (sec_name
, optarg2
);
1251 case OPTION_TARGET_HELP
:
1252 /* Mention any target specific options. */
1253 ldemul_list_emulation_options (stdout
);
1256 set_segment_start (".bss", optarg
);
1259 set_segment_start (".data", optarg
);
1262 set_segment_start (".text", optarg
);
1264 case OPTION_TTEXT_SEGMENT
:
1265 set_segment_start (".text-segment", optarg
);
1267 case OPTION_TRADITIONAL_FORMAT
:
1268 link_info
.traditional_format
= TRUE
;
1270 case OPTION_TASK_LINK
:
1271 link_info
.task_link
= TRUE
;
1272 /* Fall through - do an implied -r option. */
1274 link_info
.relocatable
= TRUE
;
1275 config
.build_constructors
= TRUE
;
1276 config
.magic_demand_paged
= FALSE
;
1277 config
.text_read_only
= FALSE
;
1278 config
.dynamic_link
= FALSE
;
1281 ldlang_add_undef (optarg
);
1285 lang_add_unique (optarg
);
1287 config
.unique_orphan_sections
= TRUE
;
1289 case OPTION_VERBOSE
:
1291 version_printed
= TRUE
;
1292 trace_file_tries
= TRUE
;
1293 overflow_cutoff_limit
= -2;
1297 version_printed
= TRUE
;
1301 version_printed
= TRUE
;
1303 case OPTION_VERSION
:
1307 case OPTION_VERSION_SCRIPT
:
1308 /* This option indicates a small script that only specifies
1309 version information. Read it, but don't assume that
1310 we've seen a linker script. */
1312 FILE *hold_script_handle
;
1314 hold_script_handle
= saved_script_handle
;
1315 ldfile_open_command_file (optarg
);
1316 saved_script_handle
= hold_script_handle
;
1317 parser_input
= input_version_script
;
1321 case OPTION_VERSION_EXPORTS_SECTION
:
1322 /* This option records a version symbol to be applied to the
1323 symbols listed for export to be found in the object files
1324 .exports sections. */
1325 command_line
.version_exports_section
= optarg
;
1327 case OPTION_DYNAMIC_LIST_DATA
:
1328 command_line
.dynamic_list
= dynamic_list_data
;
1329 if (command_line
.symbolic
== symbolic
)
1330 command_line
.symbolic
= symbolic_unset
;
1332 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO
:
1333 lang_append_dynamic_list_cpp_typeinfo ();
1334 if (command_line
.dynamic_list
!= dynamic_list_data
)
1335 command_line
.dynamic_list
= dynamic_list
;
1336 if (command_line
.symbolic
== symbolic
)
1337 command_line
.symbolic
= symbolic_unset
;
1339 case OPTION_DYNAMIC_LIST_CPP_NEW
:
1340 lang_append_dynamic_list_cpp_new ();
1341 if (command_line
.dynamic_list
!= dynamic_list_data
)
1342 command_line
.dynamic_list
= dynamic_list
;
1343 if (command_line
.symbolic
== symbolic
)
1344 command_line
.symbolic
= symbolic_unset
;
1346 case OPTION_DYNAMIC_LIST
:
1347 /* This option indicates a small script that only specifies
1348 a dynamic list. Read it, but don't assume that we've
1349 seen a linker script. */
1351 FILE *hold_script_handle
;
1353 hold_script_handle
= saved_script_handle
;
1354 ldfile_open_command_file (optarg
);
1355 saved_script_handle
= hold_script_handle
;
1356 parser_input
= input_dynamic_list
;
1359 if (command_line
.dynamic_list
!= dynamic_list_data
)
1360 command_line
.dynamic_list
= dynamic_list
;
1361 if (command_line
.symbolic
== symbolic
)
1362 command_line
.symbolic
= symbolic_unset
;
1364 case OPTION_WARN_COMMON
:
1365 config
.warn_common
= TRUE
;
1367 case OPTION_WARN_CONSTRUCTORS
:
1368 config
.warn_constructors
= TRUE
;
1370 case OPTION_WARN_FATAL
:
1371 config
.fatal_warnings
= TRUE
;
1373 case OPTION_NO_WARN_FATAL
:
1374 config
.fatal_warnings
= FALSE
;
1376 case OPTION_WARN_MULTIPLE_GP
:
1377 config
.warn_multiple_gp
= TRUE
;
1379 case OPTION_WARN_ONCE
:
1380 config
.warn_once
= TRUE
;
1382 case OPTION_WARN_SECTION_ALIGN
:
1383 config
.warn_section_align
= TRUE
;
1385 case OPTION_WARN_SHARED_TEXTREL
:
1386 link_info
.warn_shared_textrel
= TRUE
;
1388 case OPTION_WARN_ALTERNATE_EM
:
1389 link_info
.warn_alternate_em
= TRUE
;
1391 case OPTION_WHOLE_ARCHIVE
:
1392 whole_archive
= TRUE
;
1394 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC
:
1395 add_DT_NEEDED_for_dynamic
= TRUE
;
1397 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC
:
1398 add_DT_NEEDED_for_dynamic
= FALSE
;
1400 case OPTION_ADD_DT_NEEDED_FOR_REGULAR
:
1401 add_DT_NEEDED_for_regular
= TRUE
;
1403 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR
:
1404 add_DT_NEEDED_for_regular
= FALSE
;
1409 case OPTION_DISCARD_NONE
:
1410 link_info
.discard
= discard_none
;
1413 link_info
.discard
= discard_l
;
1416 link_info
.discard
= discard_all
;
1419 if (CONST_STRNEQ (optarg
, "P,"))
1421 if (default_dirlist
!= NULL
)
1422 free (default_dirlist
);
1423 default_dirlist
= xstrdup (optarg
);
1428 case OPTION_SPARE_DYNAMIC_TAGS
:
1429 link_info
.spare_dynamic_tags
= strtoul (optarg
, NULL
, 0);
1431 case OPTION_SPLIT_BY_RELOC
:
1433 config
.split_by_reloc
= strtoul (optarg
, NULL
, 0);
1435 config
.split_by_reloc
= 32768;
1437 case OPTION_SPLIT_BY_FILE
:
1439 config
.split_by_file
= bfd_scan_vma (optarg
, NULL
, 0);
1441 config
.split_by_file
= 1;
1443 case OPTION_CHECK_SECTIONS
:
1444 command_line
.check_section_addresses
= 1;
1446 case OPTION_NO_CHECK_SECTIONS
:
1447 command_line
.check_section_addresses
= 0;
1449 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH
:
1450 command_line
.accept_unknown_input_arch
= TRUE
;
1452 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH
:
1453 command_line
.accept_unknown_input_arch
= FALSE
;
1457 einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1459 lang_enter_group ();
1464 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1466 lang_leave_group ();
1471 link_info
.init_function
= optarg
;
1475 link_info
.fini_function
= optarg
;
1478 case OPTION_REDUCE_MEMORY_OVERHEADS
:
1479 link_info
.reduce_memory_overheads
= TRUE
;
1480 if (config
.hash_table_size
== 0)
1481 config
.hash_table_size
= 1021;
1484 case OPTION_HASH_SIZE
:
1486 bfd_size_type new_size
;
1488 new_size
= strtoul (optarg
, NULL
, 0);
1490 config
.hash_table_size
= new_size
;
1492 einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1499 lang_leave_group ();
1501 if (default_dirlist
!= NULL
)
1503 set_default_dirlist (default_dirlist
);
1504 free (default_dirlist
);
1507 if (link_info
.unresolved_syms_in_objects
== RM_NOT_YET_SET
)
1508 /* FIXME: Should we allow emulations a chance to set this ? */
1509 link_info
.unresolved_syms_in_objects
= how_to_report_unresolved_symbols
;
1511 if (link_info
.unresolved_syms_in_shared_libs
== RM_NOT_YET_SET
)
1512 /* FIXME: Should we allow emulations a chance to set this ? */
1513 link_info
.unresolved_syms_in_shared_libs
= how_to_report_unresolved_symbols
;
1516 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1517 library search path. */
1520 set_default_dirlist (char *dirlist_ptr
)
1526 p
= strchr (dirlist_ptr
, PATH_SEPARATOR
);
1529 if (*dirlist_ptr
!= '\0')
1530 ldfile_add_library_path (dirlist_ptr
, TRUE
);
1533 dirlist_ptr
= p
+ 1;
1538 set_section_start (char *sect
, char *valstr
)
1541 bfd_vma val
= bfd_scan_vma (valstr
, &end
, 16);
1543 einfo (_("%P%F: invalid hex number `%s'\n"), valstr
);
1544 lang_section_start (sect
, exp_intop (val
), NULL
);
1548 set_segment_start (const char *section
, char *valstr
)
1554 bfd_vma val
= bfd_scan_vma (valstr
, &end
, 16);
1556 einfo (_("%P%F: invalid hex number `%s'\n"), valstr
);
1557 /* If we already have an entry for this segment, update the existing
1560 for (seg
= segments
; seg
; seg
= seg
->next
)
1561 if (strcmp (seg
->name
, name
) == 0)
1566 /* There was no existing value so we must create a new segment
1568 seg
= (segment_type
*) stat_alloc (sizeof (*seg
));
1572 /* Add it to the linked list of segments. */
1573 seg
->next
= segments
;
1575 /* Historically, -Ttext and friends set the base address of a
1576 particular section. For backwards compatibility, we still do
1577 that. If a SEGMENT_START directive is seen, the section address
1578 assignment will be disabled. */
1579 lang_section_start (section
, exp_intop (val
), seg
);
1583 /* Print help messages for the options. */
1589 const char **targets
, **pp
;
1592 printf (_("Usage: %s [options] file...\n"), program_name
);
1594 printf (_("Options:\n"));
1595 for (i
= 0; i
< OPTION_COUNT
; i
++)
1597 if (ld_options
[i
].doc
!= NULL
)
1610 if (ld_options
[j
].shortopt
!= '\0'
1611 && ld_options
[j
].control
!= NO_HELP
)
1613 printf ("%s-%c", comma
? ", " : "", ld_options
[j
].shortopt
);
1614 len
+= (comma
? 2 : 0) + 2;
1615 if (ld_options
[j
].arg
!= NULL
)
1617 if (ld_options
[j
].opt
.has_arg
!= optional_argument
)
1622 printf ("%s", _(ld_options
[j
].arg
));
1623 len
+= strlen (_(ld_options
[j
].arg
));
1629 while (j
< OPTION_COUNT
&& ld_options
[j
].doc
== NULL
);
1634 if (ld_options
[j
].opt
.name
!= NULL
1635 && ld_options
[j
].control
!= NO_HELP
)
1638 (ld_options
[j
].control
== TWO_DASHES
1639 || ld_options
[j
].control
== EXACTLY_TWO_DASHES
);
1643 two_dashes
? "-" : "",
1644 ld_options
[j
].opt
.name
);
1645 len
+= ((comma
? 2 : 0)
1647 + (two_dashes
? 1 : 0)
1648 + strlen (ld_options
[j
].opt
.name
));
1649 if (ld_options
[j
].arg
!= NULL
)
1651 printf (" %s", _(ld_options
[j
].arg
));
1652 len
+= 1 + strlen (_(ld_options
[j
].arg
));
1658 while (j
< OPTION_COUNT
&& ld_options
[j
].doc
== NULL
);
1666 for (; len
< 30; len
++)
1669 printf ("%s\n", _(ld_options
[i
].doc
));
1672 printf (_(" @FILE"));
1673 for (len
= strlen (" @FILE"); len
< 30; len
++)
1675 printf (_("Read options from FILE\n"));
1677 /* Note: Various tools (such as libtool) depend upon the
1678 format of the listings below - do not change them. */
1679 /* xgettext:c-format */
1680 printf (_("%s: supported targets:"), program_name
);
1681 targets
= bfd_target_list ();
1682 for (pp
= targets
; *pp
!= NULL
; pp
++)
1683 printf (" %s", *pp
);
1687 /* xgettext:c-format */
1688 printf (_("%s: supported emulations: "), program_name
);
1689 ldemul_list_emulations (stdout
);
1692 /* xgettext:c-format */
1693 printf (_("%s: emulation specific options:\n"), program_name
);
1694 ldemul_list_emulation_options (stdout
);
1697 if (REPORT_BUGS_TO
[0])
1698 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO
);