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
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, 51 Franklin Street - Fifth Floor, Boston, MA
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,
84 OPTION_NO_KEEP_MEMORY,
85 OPTION_NO_WARN_MISMATCH,
86 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_TRADITIONAL_FORMAT,
111 OPTION_VERSION_SCRIPT,
112 OPTION_VERSION_EXPORTS_SECTION,
114 OPTION_DYNAMIC_LIST_CPP_NEW,
115 OPTION_DYNAMIC_LIST_CPP_TYPEINFO,
116 OPTION_DYNAMIC_LIST_DATA,
118 OPTION_WARN_CONSTRUCTORS,
120 OPTION_WARN_MULTIPLE_GP,
122 OPTION_WARN_SECTION_ALIGN,
123 OPTION_SPLIT_BY_RELOC,
124 OPTION_SPLIT_BY_FILE ,
125 OPTION_WHOLE_ARCHIVE,
127 OPTION_NO_ADD_NEEDED,
131 OPTION_FORCE_EXE_SUFFIX,
133 OPTION_NO_GC_SECTIONS,
134 OPTION_PRINT_GC_SECTIONS,
135 OPTION_NO_PRINT_GC_SECTIONS,
137 OPTION_CHECK_SECTIONS,
138 OPTION_NO_CHECK_SECTIONS,
142 OPTION_SECTION_START,
145 OPTION_ALLOW_SHLIB_UNDEFINED,
146 OPTION_NO_ALLOW_SHLIB_UNDEFINED,
147 OPTION_ALLOW_MULTIPLE_DEFINITION,
148 OPTION_NO_UNDEFINED_VERSION,
149 OPTION_DEFAULT_SYMVER,
150 OPTION_DEFAULT_IMPORTED_SYMVER,
152 OPTION_SPARE_DYNAMIC_TAGS,
153 OPTION_NO_DEFINE_COMMON,
156 OPTION_STRIP_DISCARDED,
157 OPTION_NO_STRIP_DISCARDED,
158 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
159 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
161 OPTION_UNRESOLVED_SYMBOLS,
162 OPTION_WARN_UNRESOLVED_SYMBOLS,
163 OPTION_ERROR_UNRESOLVED_SYMBOLS,
164 OPTION_WARN_SHARED_TEXTREL,
165 OPTION_REDUCE_MEMORY_OVERHEADS,
166 OPTION_DEFAULT_SCRIPT
169 /* The long options. This structure is used for both the option
170 parsing and the help text. */
174 /* The long option information. */
176 /* The short option with the same meaning ('\0' if none). */
178 /* The name of the argument (NULL if none). */
180 /* The documentation string. If this is NULL, this is a synonym for
181 the previous option. */
184 /* Use one dash before long option name. */
186 /* Use two dashes before long option name. */
188 /* Only accept two dashes before the long option name.
189 This is an overloading of the use of this enum, since originally it
190 was only intended to tell the --help display function how to display
191 the long option name. This feature was added in order to resolve
192 the confusion about the -omagic command line switch. Is it setting
193 the output file name to "magic" or is it setting the NMAGIC flag on
194 the output ? It has been decided that it is setting the output file
195 name, and that if you want to set the NMAGIC flag you should use -N
198 /* Don't mention this option in --help output. */
203 static const struct ld_option ld_options[] =
205 { {NULL, required_argument, NULL, '\0'},
206 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
208 { {"architecture", required_argument, NULL, 'A'},
209 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
210 { {"format", required_argument, NULL, 'b'},
211 'b', N_("TARGET"), N_("Specify target for following input files"),
213 { {"mri-script", required_argument, NULL, 'c'},
214 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
215 { {"dc", no_argument, NULL, 'd'},
216 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
217 { {"dp", no_argument, NULL, 'd'},
218 '\0', NULL, NULL, ONE_DASH },
219 { {"entry", required_argument, NULL, 'e'},
220 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
221 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
222 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
223 { {"EB", no_argument, NULL, OPTION_EB},
224 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
225 { {"EL", no_argument, NULL, OPTION_EL},
226 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
227 { {"auxiliary", required_argument, NULL, 'f'},
228 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
230 { {"filter", required_argument, NULL, 'F'},
231 'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
233 { {NULL, no_argument, NULL, '\0'},
234 'g', NULL, N_("Ignored"), ONE_DASH },
235 { {"gpsize", required_argument, NULL, 'G'},
236 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
238 { {"soname", required_argument, NULL, OPTION_SONAME},
239 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
240 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
241 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
243 { {"library", required_argument, NULL, 'l'},
244 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
245 { {"library-path", required_argument, NULL, 'L'},
246 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
248 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
249 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
250 { {NULL, required_argument, NULL, '\0'},
251 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
252 { {"print-map", no_argument, NULL, 'M'},
253 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
254 { {"nmagic", no_argument, NULL, 'n'},
255 'n', NULL, N_("Do not page align data"), TWO_DASHES },
256 { {"omagic", no_argument, NULL, 'N'},
257 'N', NULL, N_("Do not page align data, do not make text readonly"),
258 EXACTLY_TWO_DASHES },
259 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
260 '\0', NULL, N_("Page align data, make text readonly"),
261 EXACTLY_TWO_DASHES },
262 { {"output", required_argument, NULL, 'o'},
263 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
264 { {NULL, required_argument, NULL, '\0'},
265 'O', NULL, N_("Optimize output file"), ONE_DASH },
266 { {"Qy", no_argument, NULL, OPTION_IGNORE},
267 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
268 { {"emit-relocs", no_argument, NULL, 'q'},
269 'q', NULL, "Generate relocations in final output", TWO_DASHES },
270 { {"relocatable", no_argument, NULL, 'r'},
271 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
272 { {NULL, no_argument, NULL, '\0'},
273 'i', NULL, NULL, ONE_DASH },
274 { {"just-symbols", required_argument, NULL, 'R'},
275 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
277 { {"strip-all", no_argument, NULL, 's'},
278 's', NULL, N_("Strip all symbols"), TWO_DASHES },
279 { {"strip-debug", no_argument, NULL, 'S'},
280 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
281 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
282 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
283 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
284 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
285 { {"trace", no_argument, NULL, 't'},
286 't', NULL, N_("Trace file opens"), TWO_DASHES },
287 { {"script", required_argument, NULL, 'T'},
288 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
289 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
290 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
291 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
292 '\0', NULL, NULL, ONE_DASH },
293 { {"undefined", required_argument, NULL, 'u'},
294 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
296 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
297 '\0', N_("[=SECTION]"),
298 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
299 { {"Ur", no_argument, NULL, OPTION_UR},
300 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
301 { {"version", no_argument, NULL, OPTION_VERSION},
302 'v', NULL, N_("Print version information"), TWO_DASHES },
303 { {NULL, no_argument, NULL, '\0'},
304 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
305 { {"discard-all", no_argument, NULL, 'x'},
306 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
307 { {"discard-locals", no_argument, NULL, 'X'},
308 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
309 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
310 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
311 { {"trace-symbol", required_argument, NULL, 'y'},
312 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
313 { {NULL, required_argument, NULL, '\0'},
314 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
316 { {"start-group", no_argument, NULL, '('},
317 '(', NULL, N_("Start a group"), TWO_DASHES },
318 { {"end-group", no_argument, NULL, ')'},
319 ')', NULL, N_("End a group"), TWO_DASHES },
320 { {"accept-unknown-input-arch", no_argument, NULL,
321 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
323 N_("Accept input files whose architecture cannot be determined"),
325 { {"no-accept-unknown-input-arch", no_argument, NULL,
326 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
327 '\0', NULL, N_("Reject input files whose architecture is unknown"),
329 { {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED},
330 '\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n"
331 "\t\t\t\tfollowing dynamic libs"), TWO_DASHES },
332 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED},
333 '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n"
334 "\t\t\t\tin following dynamic libs"), TWO_DASHES },
335 { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED},
336 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
338 { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED},
339 '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"),
341 { {"assert", required_argument, NULL, OPTION_ASSERT},
342 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
343 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
344 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
345 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
346 '\0', NULL, NULL, ONE_DASH },
347 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
348 '\0', NULL, NULL, ONE_DASH },
349 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
350 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
351 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
352 '\0', NULL, NULL, ONE_DASH },
353 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
354 '\0', NULL, NULL, ONE_DASH },
355 { {"static", no_argument, NULL, OPTION_NON_SHARED},
356 '\0', NULL, NULL, ONE_DASH },
357 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
358 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
359 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
360 '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
361 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
362 '\0', NULL, N_("Check section addresses for overlaps (default)"),
364 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
365 '\0', NULL, N_("Do not check section addresses for overlaps"),
367 { {"cref", no_argument, NULL, OPTION_CREF},
368 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
369 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
370 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
371 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
372 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
374 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
375 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
376 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
377 '\0', NULL, N_("Treat warnings as errors"),
379 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
380 '\0', NULL, N_("Don't treat warnings as errors"),
382 { {"fini", required_argument, NULL, OPTION_FINI},
383 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
384 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
385 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
386 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
387 '\0', NULL, N_("Remove unused sections (on some targets)"),
389 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
390 '\0', NULL, N_("Don't remove unused sections (default)"),
392 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
393 '\0', NULL, N_("List removed unused sections on stderr"),
395 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
396 '\0', NULL, N_("Do not list removed unused sections"),
398 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
399 '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
401 { {"help", no_argument, NULL, OPTION_HELP},
402 '\0', NULL, N_("Print option help"), TWO_DASHES },
403 { {"init", required_argument, NULL, OPTION_INIT},
404 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
405 { {"Map", required_argument, NULL, OPTION_MAP},
406 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
407 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
408 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
409 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
410 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
411 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
412 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
413 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
414 '\0', NULL, N_("Do not allow unresolved references in object files"),
416 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
417 '\0', NULL, N_("Allow unresolved references in shared libaries"),
419 { {"no-allow-shlib-undefined", no_argument, NULL,
420 OPTION_NO_ALLOW_SHLIB_UNDEFINED},
421 '\0', NULL, N_("Do not allow unresolved references in shared libs"),
423 { {"allow-multiple-definition", no_argument, NULL,
424 OPTION_ALLOW_MULTIPLE_DEFINITION},
425 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
426 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
427 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
428 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
429 '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
430 { {"default-imported-symver", no_argument, NULL,
431 OPTION_DEFAULT_IMPORTED_SYMVER},
432 '\0', NULL, N_("Create default symbol version for imported symbols"),
434 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
435 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
436 { {"no-warn-search-mismatch", no_argument, NULL,
437 OPTION_NO_WARN_SEARCH_MISMATCH},
438 '\0', NULL, N_("Don't warn on finding an incompatible library"),
440 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
441 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
442 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
443 '\0', NULL, N_("Create an output file even if errors occur"),
445 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
446 '\0', NULL, NULL, NO_HELP },
447 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
448 '\0', NULL, N_("Only use library directories specified on\n"
449 "\t\t\t\tthe command line"), ONE_DASH },
450 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
451 '\0', N_("TARGET"), N_("Specify target of output file"),
452 EXACTLY_TWO_DASHES },
453 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
454 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
455 { {"reduce-memory-overheads", no_argument, NULL,
456 OPTION_REDUCE_MEMORY_OVERHEADS},
457 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
459 { {"relax", no_argument, NULL, OPTION_RELAX},
460 '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
461 { {"retain-symbols-file", required_argument, NULL,
462 OPTION_RETAIN_SYMBOLS_FILE},
463 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
464 { {"rpath", required_argument, NULL, OPTION_RPATH},
465 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
466 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
467 '\0', N_("PATH"), N_("Set link time shared library search path"),
469 { {"shared", no_argument, NULL, OPTION_SHARED},
470 '\0', NULL, N_("Create a shared library"), ONE_DASH },
471 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
472 '\0', NULL, NULL, ONE_DASH },
473 { {"pie", no_argument, NULL, OPTION_PIE},
474 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
475 { {"pic-executable", no_argument, NULL, OPTION_PIE},
476 '\0', NULL, NULL, TWO_DASHES },
477 { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
478 '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES },
479 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
480 '\0', NULL, NULL, NO_HELP },
481 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
482 '\0', N_("name|alignment"),
483 N_("Sort sections by name or maximum alignment"), TWO_DASHES },
484 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
485 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
487 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
488 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
490 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
491 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
493 { {"stats", no_argument, NULL, OPTION_STATS},
494 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
495 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
496 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
497 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
498 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
499 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
500 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
501 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
502 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
504 { {"Tbss", required_argument, NULL, OPTION_TBSS},
505 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
506 { {"Tdata", required_argument, NULL, OPTION_TDATA},
507 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
508 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
509 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
510 { {"unresolved-symbols=<method>", required_argument, NULL,
511 OPTION_UNRESOLVED_SYMBOLS},
512 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
513 "\t\t\t\tignore-all, report-all, ignore-in-object-files,\n"
514 "\t\t\t\tignore-in-shared-libs"), TWO_DASHES },
515 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
516 '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
517 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
518 '\0', NULL, NULL, NO_HELP },
519 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
520 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
521 { {"version-exports-section", required_argument, NULL,
522 OPTION_VERSION_EXPORTS_SECTION },
523 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
524 "\t\t\t\tSYMBOL as the version."), TWO_DASHES },
525 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
526 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
527 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
528 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
529 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
530 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
531 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
532 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
533 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
534 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
535 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
536 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
538 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
539 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
540 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
541 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
542 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
543 '\0', NULL, N_("Warn if start of section changes due to alignment"),
545 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
546 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
548 { {"warn-unresolved-symbols", no_argument, NULL,
549 OPTION_WARN_UNRESOLVED_SYMBOLS},
550 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
551 { {"error-unresolved-symbols", no_argument, NULL,
552 OPTION_ERROR_UNRESOLVED_SYMBOLS},
553 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
554 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
555 '\0', NULL, N_("Include all objects from following archives"),
557 { {"wrap", required_argument, NULL, OPTION_WRAP},
558 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
561 #define OPTION_COUNT ARRAY_SIZE (ld_options)
564 parse_args (unsigned argc, char **argv)
569 char *default_dirlist = NULL;
571 struct option *longopts;
572 struct option *really_longopts;
574 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
575 int no_fatal_warnings = FALSE;
577 shortopts = xmalloc (OPTION_COUNT * 3 + 2);
578 longopts = xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
579 really_longopts = xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
581 /* Starting the short option string with '-' is for programs that
582 expect options and other ARGV-elements in any order and that care about
583 the ordering of the two. We describe each non-option ARGV-element
584 as if it were the argument of an option with character code 1. */
589 for (i = 0; i < OPTION_COUNT; i++)
591 if (ld_options[i].shortopt != '\0')
593 shortopts[is] = ld_options[i].shortopt;
595 if (ld_options[i].opt.has_arg == required_argument
596 || ld_options[i].opt.has_arg == optional_argument)
600 if (ld_options[i].opt.has_arg == optional_argument)
607 if (ld_options[i].opt.name != NULL)
609 if (ld_options[i].control == EXACTLY_TWO_DASHES)
611 really_longopts[irl] = ld_options[i].opt;
616 longopts[il] = ld_options[i].opt;
621 shortopts[is] = '\0';
622 longopts[il].name = NULL;
623 really_longopts[irl].name = NULL;
625 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
627 /* The -G option is ambiguous on different platforms. Sometimes it
628 specifies the largest data size to put into the small data
629 section. Sometimes it is equivalent to --shared. Unfortunately,
630 the first form takes an argument, while the second does not.
632 We need to permit the --shared form because on some platforms,
633 such as Solaris, gcc -shared will pass -G to the linker.
635 To permit either usage, we look through the argument list. If we
636 find -G not followed by a number, we change it into --shared.
637 This will work for most normal cases. */
638 for (i = 1; i < argc; i++)
639 if (strcmp (argv[i], "-G") == 0
641 || ! ISDIGIT (argv[i + 1][0])))
642 argv[i] = (char *) "--shared";
644 /* Because we permit long options to start with a single dash, and
645 we have a --library option, and the -l option is conventionally
646 used with an immediately following argument, we can have bad
647 results if somebody tries to use -l with a library whose name
648 happens to start with "ibrary", as in -li. We avoid problems by
649 simply turning -l into --library. This means that users will
650 have to use two dashes in order to use --library, which is OK
651 since that's how it is documented.
653 FIXME: It's possible that this problem can arise for other short
654 options as well, although the user does always have the recourse
655 of adding a space between the option and the argument. */
656 for (i = 1; i < argc; i++)
658 if (argv[i][0] == '-'
660 && argv[i][2] != '\0')
664 n = xmalloc (strlen (argv[i]) + 20);
665 sprintf (n, "--library=%s", argv[i] + 2);
676 /* Using last_optind lets us avoid calling ldemul_parse_args
677 multiple times on a single option, which would lead to
678 confusion in the internal static variables maintained by
679 getopt. This could otherwise happen for an argument like
680 -nx, in which the -n is parsed as a single option, and we
681 loop around to pick up the -x. */
682 if (optind != last_optind)
683 if (ldemul_parse_args (argc, argv))
686 /* getopt_long_only is like getopt_long, but '-' as well as '--'
687 can indicate a long option. */
689 last_optind = optind;
690 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
693 optind = last_optind;
694 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
697 if (ldemul_handle_option (optc))
706 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
710 einfo (_("%P%F: use the --help option for usage information\n"));
712 case 1: /* File name. */
713 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
719 /* For HP/UX compatibility. Actually -a shared should mean
720 ``use only shared libraries'' but, then, we don't
721 currently support shared libraries on HP/UX anyhow. */
722 if (strcmp (optarg, "archive") == 0)
723 config.dynamic_link = FALSE;
724 else if (strcmp (optarg, "shared") == 0
725 || strcmp (optarg, "default") == 0)
726 config.dynamic_link = TRUE;
728 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
731 /* FIXME: We just ignore these, but we should handle them. */
732 if (strcmp (optarg, "definitions") == 0)
734 else if (strcmp (optarg, "nodefinitions") == 0)
736 else if (strcmp (optarg, "nosymbolic") == 0)
738 else if (strcmp (optarg, "pure-text") == 0)
741 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
744 ldfile_add_arch (optarg);
747 lang_add_target (optarg);
750 ldfile_open_command_file (optarg);
751 parser_input = input_mri_script;
754 case OPTION_CALL_SHARED:
755 config.dynamic_link = TRUE;
757 case OPTION_NON_SHARED:
758 config.dynamic_link = FALSE;
761 command_line.cref = TRUE;
762 link_info.notice_all = TRUE;
765 command_line.force_common_definition = TRUE;
769 lex_redirect (optarg);
770 parser_input = input_defsym;
776 case OPTION_DEMANGLE:
780 enum demangling_styles style;
782 style = cplus_demangle_name_to_style (optarg);
783 if (style == unknown_demangling)
784 einfo (_("%F%P: unknown demangling style `%s'"),
787 cplus_demangle_set_style (style);
790 case 'I': /* Used on Solaris. */
791 case OPTION_DYNAMIC_LINKER:
792 command_line.interpreter = optarg;
795 /* Already handled in ldmain.c. */
798 command_line.endian = ENDIAN_BIG;
801 command_line.endian = ENDIAN_LITTLE;
803 case OPTION_EMBEDDED_RELOCS:
804 command_line.embedded_relocs = TRUE;
806 case OPTION_EXPORT_DYNAMIC:
807 case 'E': /* HP/UX compatibility. */
808 link_info.export_dynamic = TRUE;
811 lang_add_entry (optarg, TRUE);
814 if (command_line.auxiliary_filters == NULL)
816 command_line.auxiliary_filters = xmalloc (2 * sizeof (char *));
817 command_line.auxiliary_filters[0] = optarg;
818 command_line.auxiliary_filters[1] = NULL;
826 for (p = command_line.auxiliary_filters; *p != NULL; p++)
828 command_line.auxiliary_filters
829 = xrealloc (command_line.auxiliary_filters,
830 (c + 2) * sizeof (char *));
831 command_line.auxiliary_filters[c] = optarg;
832 command_line.auxiliary_filters[c + 1] = NULL;
836 command_line.filter_shlib = optarg;
838 case OPTION_FORCE_EXE_SUFFIX:
839 command_line.force_exe_suffix = TRUE;
844 g_switch_value = strtoul (optarg, &end, 0);
846 einfo (_("%P%F: invalid number `%s'\n"), optarg);
852 case OPTION_GC_SECTIONS:
853 link_info.gc_sections = TRUE;
855 case OPTION_PRINT_GC_SECTIONS:
856 link_info.print_gc_sections = TRUE;
863 ldfile_add_library_path (optarg, TRUE);
866 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
869 config.map_filename = "-";
872 /* Ignore. Was handled in a pre-parse. */
875 config.map_filename = optarg;
878 config.text_read_only = FALSE;
879 config.magic_demand_paged = FALSE;
880 config.dynamic_link = FALSE;
882 case OPTION_NO_OMAGIC:
883 config.text_read_only = TRUE;
884 config.magic_demand_paged = TRUE;
885 /* NB/ Does not set dynamic_link to TRUE.
886 Use --call-shared or -Bdynamic for this. */
889 config.magic_demand_paged = FALSE;
890 config.dynamic_link = FALSE;
892 case OPTION_NO_DEFINE_COMMON:
893 command_line.inhibit_common_definition = TRUE;
895 case OPTION_NO_DEMANGLE:
898 case OPTION_NO_GC_SECTIONS:
899 link_info.gc_sections = FALSE;
901 case OPTION_NO_PRINT_GC_SECTIONS:
902 link_info.print_gc_sections = FALSE;
904 case OPTION_NO_KEEP_MEMORY:
905 link_info.keep_memory = FALSE;
907 case OPTION_NO_UNDEFINED:
908 link_info.unresolved_syms_in_objects
909 = how_to_report_unresolved_symbols;
911 case OPTION_ALLOW_SHLIB_UNDEFINED:
912 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
914 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
915 link_info.unresolved_syms_in_shared_libs
916 = how_to_report_unresolved_symbols;
918 case OPTION_UNRESOLVED_SYMBOLS:
919 if (strcmp (optarg, "ignore-all") == 0)
921 link_info.unresolved_syms_in_objects = RM_IGNORE;
922 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
924 else if (strcmp (optarg, "report-all") == 0)
926 link_info.unresolved_syms_in_objects
927 = how_to_report_unresolved_symbols;
928 link_info.unresolved_syms_in_shared_libs
929 = how_to_report_unresolved_symbols;
931 else if (strcmp (optarg, "ignore-in-object-files") == 0)
933 link_info.unresolved_syms_in_objects = RM_IGNORE;
934 link_info.unresolved_syms_in_shared_libs
935 = how_to_report_unresolved_symbols;
937 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
939 link_info.unresolved_syms_in_objects
940 = how_to_report_unresolved_symbols;
941 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
944 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
946 case OPTION_WARN_UNRESOLVED_SYMBOLS:
947 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
948 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
949 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
950 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
951 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
954 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
955 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
956 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
957 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
958 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
959 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
961 case OPTION_ALLOW_MULTIPLE_DEFINITION:
962 link_info.allow_multiple_definition = TRUE;
964 case OPTION_NO_UNDEFINED_VERSION:
965 link_info.allow_undefined_version = FALSE;
967 case OPTION_DEFAULT_SYMVER:
968 link_info.create_default_symver = TRUE;
970 case OPTION_DEFAULT_IMPORTED_SYMVER:
971 link_info.default_imported_symver = TRUE;
973 case OPTION_NO_WARN_MISMATCH:
974 command_line.warn_mismatch = FALSE;
976 case OPTION_NO_WARN_SEARCH_MISMATCH:
977 command_line.warn_search_mismatch = FALSE;
979 case OPTION_NOINHIBIT_EXEC:
980 force_make_executable = TRUE;
982 case OPTION_NOSTDLIB:
983 config.only_cmd_line_lib_dirs = TRUE;
985 case OPTION_NO_WHOLE_ARCHIVE:
986 whole_archive = FALSE;
989 /* FIXME "-O<non-digits> <value>" used to set the address of
990 section <non-digits>. Was this for compatibility with
991 something, or can we create a new option to do that
992 (with a syntax similar to -defsym)?
993 getopt can't handle two args to an option without kludges. */
995 /* Enable optimizations of output files. */
996 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
999 lang_add_output (optarg, 0);
1001 case OPTION_OFORMAT:
1002 lang_add_output_format (optarg, NULL, NULL, 0);
1005 link_info.emitrelocations = TRUE;
1009 if (optind == last_optind)
1010 /* This can happen if the user put "-rpath,a" on the command
1011 line. (Or something similar. The comma is important).
1012 Getopt becomes confused and thinks that this is a -r option
1013 but it cannot parse the text after the -r so it refuses to
1014 increment the optind counter. Detect this case and issue
1015 an error message here. We cannot just make this a warning,
1016 increment optind, and continue because getopt is too confused
1017 and will seg-fault the next time around. */
1018 einfo(_("%P%F: bad -rpath option\n"));
1020 link_info.relocatable = TRUE;
1021 config.build_constructors = FALSE;
1022 config.magic_demand_paged = FALSE;
1023 config.text_read_only = FALSE;
1024 config.dynamic_link = FALSE;
1027 /* The GNU linker traditionally uses -R to mean to include
1028 only the symbols from a file. The Solaris linker uses -R
1029 to set the path used by the runtime linker to find
1030 libraries. This is the GNU linker -rpath argument. We
1031 try to support both simultaneously by checking the file
1032 named. If it is a directory, rather than a regular file,
1033 we assume -rpath was meant. */
1037 if (stat (optarg, &s) >= 0
1038 && ! S_ISDIR (s.st_mode))
1040 lang_add_input_file (optarg,
1041 lang_input_file_is_symbols_only_enum,
1048 if (command_line.rpath == NULL)
1049 command_line.rpath = xstrdup (optarg);
1052 size_t rpath_len = strlen (command_line.rpath);
1053 size_t optarg_len = strlen (optarg);
1055 char *cp = command_line.rpath;
1057 /* First see whether OPTARG is already in the path. */
1060 if (strncmp (optarg, cp, optarg_len) == 0
1061 && (cp[optarg_len] == 0
1062 || cp[optarg_len] == config.rpath_separator))
1066 /* Not yet found. */
1067 cp = strchr (cp, config.rpath_separator);
1075 buf = xmalloc (rpath_len + optarg_len + 2);
1076 sprintf (buf, "%s%c%s", command_line.rpath,
1077 config.rpath_separator, optarg);
1078 free (command_line.rpath);
1079 command_line.rpath = buf;
1083 case OPTION_RPATH_LINK:
1084 if (command_line.rpath_link == NULL)
1085 command_line.rpath_link = xstrdup (optarg);
1090 buf = xmalloc (strlen (command_line.rpath_link)
1093 sprintf (buf, "%s%c%s", command_line.rpath_link,
1094 config.rpath_separator, optarg);
1095 free (command_line.rpath_link);
1096 command_line.rpath_link = buf;
1100 command_line.relax = TRUE;
1102 case OPTION_RETAIN_SYMBOLS_FILE:
1103 add_keepsyms_file (optarg);
1106 link_info.strip = strip_debugger;
1109 link_info.strip = strip_all;
1111 case OPTION_STRIP_DISCARDED:
1112 link_info.strip_discarded = TRUE;
1114 case OPTION_NO_STRIP_DISCARDED:
1115 link_info.strip_discarded = FALSE;
1118 if (config.has_shared)
1120 link_info.shared = TRUE;
1121 /* When creating a shared library, the default
1122 behaviour is to ignore any unresolved references. */
1123 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1124 link_info.unresolved_syms_in_objects = RM_IGNORE;
1125 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1126 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1129 einfo (_("%P%F: -shared not supported\n"));
1132 if (config.has_shared)
1134 link_info.shared = TRUE;
1135 link_info.pie = TRUE;
1138 einfo (_("%P%F: -pie not supported\n"));
1140 case 'h': /* Used on Solaris. */
1142 command_line.soname = optarg;
1144 case OPTION_SORT_COMMON:
1145 config.sort_common = TRUE;
1147 case OPTION_SORT_SECTION:
1148 if (strcmp (optarg, N_("name")) == 0)
1149 sort_section = by_name;
1150 else if (strcmp (optarg, N_("alignment")) == 0)
1151 sort_section = by_alignment;
1153 einfo (_("%P%F: invalid section sorting option: %s\n"),
1157 config.stats = TRUE;
1159 case OPTION_SYMBOLIC:
1160 command_line.symbolic = symbolic;
1162 case OPTION_SYMBOLIC_FUNCTIONS:
1163 command_line.symbolic = symbolic_functions;
1169 ldfile_open_command_file (optarg);
1170 parser_input = input_script;
1173 case OPTION_DEFAULT_SCRIPT:
1174 command_line.default_script = optarg;
1176 case OPTION_SECTION_START:
1182 /* Check for <something>=<somthing>... */
1183 optarg2 = strchr (optarg, '=');
1184 if (optarg2 == NULL)
1185 einfo (_("%P%F: invalid argument to option"
1186 " \"--section-start\"\n"));
1190 /* So far so good. Are all the args present? */
1191 if ((*optarg == '\0') || (*optarg2 == '\0'))
1192 einfo (_("%P%F: missing argument(s) to option"
1193 " \"--section-start\"\n"));
1195 /* We must copy the section name as set_section_start
1196 doesn't do it for us. */
1197 len = optarg2 - optarg;
1198 sec_name = xmalloc (len);
1199 memcpy (sec_name, optarg, len - 1);
1200 sec_name[len - 1] = 0;
1202 /* Then set it... */
1203 set_section_start (sec_name, optarg2);
1206 case OPTION_TARGET_HELP:
1207 /* Mention any target specific options. */
1208 ldemul_list_emulation_options (stdout);
1211 set_segment_start (".bss", optarg);
1214 set_segment_start (".data", optarg);
1217 set_segment_start (".text", optarg);
1219 case OPTION_TRADITIONAL_FORMAT:
1220 link_info.traditional_format = TRUE;
1222 case OPTION_TASK_LINK:
1223 link_info.task_link = TRUE;
1224 /* Fall through - do an implied -r option. */
1226 link_info.relocatable = TRUE;
1227 config.build_constructors = TRUE;
1228 config.magic_demand_paged = FALSE;
1229 config.text_read_only = FALSE;
1230 config.dynamic_link = FALSE;
1233 ldlang_add_undef (optarg);
1237 lang_add_unique (optarg);
1239 config.unique_orphan_sections = TRUE;
1241 case OPTION_VERBOSE:
1243 version_printed = TRUE;
1244 trace_file_tries = TRUE;
1245 overflow_cutoff_limit = -2;
1249 version_printed = TRUE;
1253 version_printed = TRUE;
1255 case OPTION_VERSION:
1259 case OPTION_VERSION_SCRIPT:
1260 /* This option indicates a small script that only specifies
1261 version information. Read it, but don't assume that
1262 we've seen a linker script. */
1264 FILE *hold_script_handle;
1266 hold_script_handle = saved_script_handle;
1267 ldfile_open_command_file (optarg);
1268 saved_script_handle = hold_script_handle;
1269 parser_input = input_version_script;
1273 case OPTION_VERSION_EXPORTS_SECTION:
1274 /* This option records a version symbol to be applied to the
1275 symbols listed for export to be found in the object files
1276 .exports sections. */
1277 command_line.version_exports_section = optarg;
1279 case OPTION_DYNAMIC_LIST_DATA:
1280 command_line.dynamic_list = dynamic_list_data;
1281 if (command_line.symbolic == symbolic)
1282 command_line.symbolic = symbolic_unset;
1284 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1285 lang_append_dynamic_list_cpp_typeinfo ();
1286 if (command_line.dynamic_list != dynamic_list_data)
1287 command_line.dynamic_list = dynamic_list;
1288 if (command_line.symbolic == symbolic)
1289 command_line.symbolic = symbolic_unset;
1291 case OPTION_DYNAMIC_LIST_CPP_NEW:
1292 lang_append_dynamic_list_cpp_new ();
1293 if (command_line.dynamic_list != dynamic_list_data)
1294 command_line.dynamic_list = dynamic_list;
1295 if (command_line.symbolic == symbolic)
1296 command_line.symbolic = symbolic_unset;
1298 case OPTION_DYNAMIC_LIST:
1299 /* This option indicates a small script that only specifies
1300 a dynamic list. Read it, but don't assume that we've
1301 seen a linker script. */
1303 FILE *hold_script_handle;
1305 hold_script_handle = saved_script_handle;
1306 ldfile_open_command_file (optarg);
1307 saved_script_handle = hold_script_handle;
1308 parser_input = input_dynamic_list;
1311 if (command_line.dynamic_list != dynamic_list_data)
1312 command_line.dynamic_list = dynamic_list;
1313 if (command_line.symbolic == symbolic)
1314 command_line.symbolic = symbolic_unset;
1316 case OPTION_WARN_COMMON:
1317 config.warn_common = TRUE;
1319 case OPTION_WARN_CONSTRUCTORS:
1320 config.warn_constructors = TRUE;
1322 case OPTION_WARN_FATAL:
1323 config.fatal_warnings = TRUE;
1325 case OPTION_NO_WARN_FATAL:
1326 no_fatal_warnings = TRUE;
1328 case OPTION_WARN_MULTIPLE_GP:
1329 config.warn_multiple_gp = TRUE;
1331 case OPTION_WARN_ONCE:
1332 config.warn_once = TRUE;
1334 case OPTION_WARN_SECTION_ALIGN:
1335 config.warn_section_align = TRUE;
1337 case OPTION_WARN_SHARED_TEXTREL:
1338 link_info.warn_shared_textrel = TRUE;
1340 case OPTION_WHOLE_ARCHIVE:
1341 whole_archive = TRUE;
1343 case OPTION_ADD_NEEDED:
1346 case OPTION_NO_ADD_NEEDED:
1349 case OPTION_AS_NEEDED:
1350 /* XXX: --as-needed is broken on powerpc64 */
1351 #ifndef __powerpc64__
1355 case OPTION_NO_AS_NEEDED:
1361 case OPTION_DISCARD_NONE:
1362 link_info.discard = discard_none;
1365 link_info.discard = discard_l;
1368 link_info.discard = discard_all;
1371 if (CONST_STRNEQ (optarg, "P,"))
1373 if (default_dirlist != NULL)
1374 free (default_dirlist);
1375 default_dirlist = xstrdup (optarg);
1380 case OPTION_SPARE_DYNAMIC_TAGS:
1381 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1383 case OPTION_SPLIT_BY_RELOC:
1385 config.split_by_reloc = strtoul (optarg, NULL, 0);
1387 config.split_by_reloc = 32768;
1389 case OPTION_SPLIT_BY_FILE:
1391 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1393 config.split_by_file = 1;
1395 case OPTION_CHECK_SECTIONS:
1396 command_line.check_section_addresses = TRUE;
1398 case OPTION_NO_CHECK_SECTIONS:
1399 command_line.check_section_addresses = FALSE;
1401 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1402 command_line.accept_unknown_input_arch = TRUE;
1404 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1405 command_line.accept_unknown_input_arch = FALSE;
1409 einfo (_("%P%F: may not nest groups (--help for usage)\n"));
1411 lang_enter_group ();
1416 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1418 lang_leave_group ();
1423 link_info.init_function = optarg;
1427 link_info.fini_function = optarg;
1430 case OPTION_REDUCE_MEMORY_OVERHEADS:
1431 link_info.reduce_memory_overheads = TRUE;
1432 if (config.hash_table_size == 0)
1433 config.hash_table_size = 1021;
1436 case OPTION_HASH_SIZE:
1438 bfd_size_type new_size;
1440 new_size = strtoul (optarg, NULL, 0);
1442 config.hash_table_size = new_size;
1444 einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1449 if (no_fatal_warnings)
1450 config.fatal_warnings = FALSE;
1453 lang_leave_group ();
1455 if (default_dirlist != NULL)
1457 set_default_dirlist (default_dirlist);
1458 free (default_dirlist);
1461 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1462 /* FIXME: Should we allow emulations a chance to set this ? */
1463 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1465 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1466 /* FIXME: Should we allow emulations a chance to set this ? */
1467 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1470 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1471 library search path. */
1474 set_default_dirlist (char *dirlist_ptr)
1480 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1483 if (*dirlist_ptr != '\0')
1484 ldfile_add_library_path (dirlist_ptr, TRUE);
1487 dirlist_ptr = p + 1;
1492 set_section_start (char *sect, char *valstr)
1495 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1497 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1498 lang_section_start (sect, exp_intop (val), NULL);
1502 set_segment_start (const char *section, char *valstr)
1508 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1510 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1511 /* If we already have an entry for this segment, update the existing
1514 for (seg = segments; seg; seg = seg->next)
1515 if (strcmp (seg->name, name) == 0)
1520 /* There was no existing value so we must create a new segment
1522 seg = stat_alloc (sizeof (*seg));
1526 /* Add it to the linked list of segments. */
1527 seg->next = segments;
1529 /* Historically, -Ttext and friends set the base address of a
1530 particular section. For backwards compatibility, we still do
1531 that. If a SEGMENT_START directive is seen, the section address
1532 assignment will be disabled. */
1533 lang_section_start (section, exp_intop (val), seg);
1537 /* Print help messages for the options. */
1543 const char **targets, **pp;
1546 printf (_("Usage: %s [options] file...\n"), program_name);
1548 printf (_("Options:\n"));
1549 for (i = 0; i < OPTION_COUNT; i++)
1551 if (ld_options[i].doc != NULL)
1564 if (ld_options[j].shortopt != '\0'
1565 && ld_options[j].control != NO_HELP)
1567 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1568 len += (comma ? 2 : 0) + 2;
1569 if (ld_options[j].arg != NULL)
1571 if (ld_options[j].opt.has_arg != optional_argument)
1576 printf ("%s", _(ld_options[j].arg));
1577 len += strlen (_(ld_options[j].arg));
1583 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1588 if (ld_options[j].opt.name != NULL
1589 && ld_options[j].control != NO_HELP)
1592 (ld_options[j].control == TWO_DASHES
1593 || ld_options[j].control == EXACTLY_TWO_DASHES);
1597 two_dashes ? "-" : "",
1598 ld_options[j].opt.name);
1599 len += ((comma ? 2 : 0)
1601 + (two_dashes ? 1 : 0)
1602 + strlen (ld_options[j].opt.name));
1603 if (ld_options[j].arg != NULL)
1605 printf (" %s", _(ld_options[j].arg));
1606 len += 1 + strlen (_(ld_options[j].arg));
1612 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1620 for (; len < 30; len++)
1623 printf ("%s\n", _(ld_options[i].doc));
1626 printf (_(" @FILE"));
1627 for (len = strlen (" @FILE"); len < 30; len++)
1629 printf (_("Read options from FILE\n"));
1631 /* Note: Various tools (such as libtool) depend upon the
1632 format of the listings below - do not change them. */
1633 /* xgettext:c-format */
1634 printf (_("%s: supported targets:"), program_name);
1635 targets = bfd_target_list ();
1636 for (pp = targets; *pp != NULL; pp++)
1637 printf (" %s", *pp);
1641 /* xgettext:c-format */
1642 printf (_("%s: supported emulations: "), program_name);
1643 ldemul_list_emulations (stdout);
1646 /* xgettext:c-format */
1647 printf (_("%s: emulation specific options:\n"), program_name);
1648 ldemul_list_emulation_options (stdout);
1651 if (REPORT_BUGS_TO[0])
1652 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);