1 /* Parse options for the GNU linker.
2 Copyright (C) 1991-2014 Free Software Foundation, Inc.
4 This file is part of the GNU Binutils.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
19 MA 02110-1301, USA. */
24 #include "libiberty.h"
27 #include "safe-ctype.h"
43 #endif /* ENABLE_PLUGINS */
45 #ifndef PATH_SEPARATOR
46 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
47 #define PATH_SEPARATOR ';'
49 #define PATH_SEPARATOR ':'
53 /* Somewhere above, sys/stat.h got included . . . . */
54 #if !defined(S_ISDIR) && defined(S_IFDIR)
55 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
58 static void set_default_dirlist (char *);
59 static void set_section_start (char *, char *);
60 static void set_segment_start (const char *, char *);
61 static void help (void);
63 /* The long options. This structure is used for both the option
64 parsing and the help text. */
67 /* Use one dash before long option name. */
69 /* Use two dashes before long option name. */
71 /* Only accept two dashes before the long option name.
72 This is an overloading of the use of this enum, since originally it
73 was only intended to tell the --help display function how to display
74 the long option name. This feature was added in order to resolve
75 the confusion about the -omagic command line switch. Is it setting
76 the output file name to "magic" or is it setting the NMAGIC flag on
77 the output ? It has been decided that it is setting the output file
78 name, and that if you want to set the NMAGIC flag you should use -N
81 /* Don't mention this option in --help output. */
87 /* The long option information. */
89 /* The short option with the same meaning ('\0' if none). */
91 /* The name of the argument (NULL if none). */
93 /* The documentation string. If this is NULL, this is a synonym for
94 the previous option. */
96 enum control_enum control;
99 static const struct ld_option ld_options[] =
101 { {NULL, required_argument, NULL, '\0'},
102 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
104 { {"architecture", required_argument, NULL, 'A'},
105 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
106 { {"format", required_argument, NULL, 'b'},
107 'b', N_("TARGET"), N_("Specify target for following input files"),
109 { {"mri-script", required_argument, NULL, 'c'},
110 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
111 { {"dc", no_argument, NULL, 'd'},
112 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
113 { {"dp", no_argument, NULL, 'd'},
114 '\0', NULL, NULL, ONE_DASH },
115 { {"entry", required_argument, NULL, 'e'},
116 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
117 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
118 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
119 { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
120 '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
121 { {"EB", no_argument, NULL, OPTION_EB},
122 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
123 { {"EL", no_argument, NULL, OPTION_EL},
124 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
125 { {"auxiliary", required_argument, NULL, 'f'},
126 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
128 { {"filter", required_argument, NULL, 'F'},
129 'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
131 { {NULL, no_argument, NULL, '\0'},
132 'g', NULL, N_("Ignored"), ONE_DASH },
133 { {"gpsize", required_argument, NULL, 'G'},
134 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
136 { {"soname", required_argument, NULL, OPTION_SONAME},
137 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
138 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
139 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
141 { {"library", required_argument, NULL, 'l'},
142 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
143 { {"library-path", required_argument, NULL, 'L'},
144 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
146 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
147 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
148 { {NULL, required_argument, NULL, '\0'},
149 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
150 { {"print-map", no_argument, NULL, 'M'},
151 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
152 { {"nmagic", no_argument, NULL, 'n'},
153 'n', NULL, N_("Do not page align data"), TWO_DASHES },
154 { {"omagic", no_argument, NULL, 'N'},
155 'N', NULL, N_("Do not page align data, do not make text readonly"),
156 EXACTLY_TWO_DASHES },
157 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
158 '\0', NULL, N_("Page align data, make text readonly"),
159 EXACTLY_TWO_DASHES },
160 { {"output", required_argument, NULL, 'o'},
161 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
162 { {NULL, required_argument, NULL, '\0'},
163 'O', NULL, N_("Optimize output file"), ONE_DASH },
164 #ifdef ENABLE_PLUGINS
165 { {"plugin", required_argument, NULL, OPTION_PLUGIN},
166 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
167 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
168 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
169 { {"flto", optional_argument, NULL, OPTION_IGNORE},
170 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
172 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
173 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
175 #endif /* ENABLE_PLUGINS */
176 { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE},
177 '\0', NULL, N_("Ignored for GCC linker option compatibility"),
179 { {"Qy", no_argument, NULL, OPTION_IGNORE},
180 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
181 { {"emit-relocs", no_argument, NULL, 'q'},
182 'q', NULL, "Generate relocations in final output", TWO_DASHES },
183 { {"relocatable", no_argument, NULL, 'r'},
184 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
185 { {NULL, no_argument, NULL, '\0'},
186 'i', NULL, NULL, ONE_DASH },
187 { {"just-symbols", required_argument, NULL, 'R'},
188 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
190 { {"strip-all", no_argument, NULL, 's'},
191 's', NULL, N_("Strip all symbols"), TWO_DASHES },
192 { {"strip-debug", no_argument, NULL, 'S'},
193 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
194 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
195 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
196 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
197 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
198 { {"trace", no_argument, NULL, 't'},
199 't', NULL, N_("Trace file opens"), TWO_DASHES },
200 { {"script", required_argument, NULL, 'T'},
201 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
202 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
203 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
204 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
205 '\0', NULL, NULL, ONE_DASH },
206 { {"undefined", required_argument, NULL, 'u'},
207 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
209 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
210 '\0', N_("[=SECTION]"),
211 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
212 { {"Ur", no_argument, NULL, OPTION_UR},
213 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
214 { {"version", no_argument, NULL, OPTION_VERSION},
215 'v', NULL, N_("Print version information"), TWO_DASHES },
216 { {NULL, no_argument, NULL, '\0'},
217 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
218 { {"discard-all", no_argument, NULL, 'x'},
219 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
220 { {"discard-locals", no_argument, NULL, 'X'},
221 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
222 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
223 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
224 { {"trace-symbol", required_argument, NULL, 'y'},
225 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
226 { {NULL, required_argument, NULL, '\0'},
227 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
229 { {"start-group", no_argument, NULL, '('},
230 '(', NULL, N_("Start a group"), TWO_DASHES },
231 { {"end-group", no_argument, NULL, ')'},
232 ')', NULL, N_("End a group"), TWO_DASHES },
233 { {"accept-unknown-input-arch", no_argument, NULL,
234 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
236 N_("Accept input files whose architecture cannot be determined"),
238 { {"no-accept-unknown-input-arch", no_argument, NULL,
239 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
240 '\0', NULL, N_("Reject input files whose architecture is unknown"),
243 /* The next two options are deprecated because of their similarity to
244 --as-needed and --no-as-needed. They have been replaced by
245 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */
246 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
247 '\0', NULL, NULL, NO_HELP },
248 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
249 '\0', NULL, NULL, NO_HELP },
251 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
252 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
254 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
255 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
256 " the command line"),
258 { {"assert", required_argument, NULL, OPTION_ASSERT},
259 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
260 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
261 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
262 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
263 '\0', NULL, NULL, ONE_DASH },
264 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
265 '\0', NULL, NULL, ONE_DASH },
266 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
267 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
268 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
269 '\0', NULL, NULL, ONE_DASH },
270 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
271 '\0', NULL, NULL, ONE_DASH },
272 { {"static", no_argument, NULL, OPTION_NON_SHARED},
273 '\0', NULL, NULL, ONE_DASH },
274 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
275 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
276 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
277 '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
278 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
279 '\0', NULL, N_("Check section addresses for overlaps (default)"),
281 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
282 '\0', NULL, N_("Do not check section addresses for overlaps"),
284 { {"copy-dt-needed-entries", no_argument, NULL,
285 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
286 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
288 { {"no-copy-dt-needed-entries", no_argument, NULL,
289 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
290 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
293 { {"cref", no_argument, NULL, OPTION_CREF},
294 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
295 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
296 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
297 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
298 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
300 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
301 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
302 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
303 '\0', NULL, N_("Treat warnings as errors"),
305 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
306 '\0', NULL, N_("Do not treat warnings as errors (default)"),
308 { {"fini", required_argument, NULL, OPTION_FINI},
309 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
310 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
311 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
312 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
313 '\0', NULL, N_("Remove unused sections (on some targets)"),
315 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
316 '\0', NULL, N_("Don't remove unused sections (default)"),
318 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
319 '\0', NULL, N_("List removed unused sections on stderr"),
321 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
322 '\0', NULL, N_("Do not list removed unused sections"),
324 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
325 '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
327 { {"help", no_argument, NULL, OPTION_HELP},
328 '\0', NULL, N_("Print option help"), TWO_DASHES },
329 { {"init", required_argument, NULL, OPTION_INIT},
330 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
331 { {"Map", required_argument, NULL, OPTION_MAP},
332 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
333 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
334 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
335 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
336 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
337 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
338 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
339 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
340 '\0', NULL, N_("Do not allow unresolved references in object files"),
342 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
343 '\0', NULL, N_("Allow unresolved references in shared libraries"),
345 { {"no-allow-shlib-undefined", no_argument, NULL,
346 OPTION_NO_ALLOW_SHLIB_UNDEFINED},
347 '\0', NULL, N_("Do not allow unresolved references in shared libs"),
349 { {"allow-multiple-definition", no_argument, NULL,
350 OPTION_ALLOW_MULTIPLE_DEFINITION},
351 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
352 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
353 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
354 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
355 '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
356 { {"default-imported-symver", no_argument, NULL,
357 OPTION_DEFAULT_IMPORTED_SYMVER},
358 '\0', NULL, N_("Create default symbol version for imported symbols"),
360 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
361 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
362 { {"no-warn-search-mismatch", no_argument, NULL,
363 OPTION_NO_WARN_SEARCH_MISMATCH},
364 '\0', NULL, N_("Don't warn on finding an incompatible library"),
366 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
367 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
368 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
369 '\0', NULL, N_("Create an output file even if errors occur"),
371 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
372 '\0', NULL, NULL, NO_HELP },
373 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
374 '\0', NULL, N_("Only use library directories specified on\n"
375 " the command line"),
377 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
378 '\0', N_("TARGET"), N_("Specify target of output file"),
379 EXACTLY_TWO_DASHES },
380 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT},
381 '\0', NULL, N_("Print default output format"), TWO_DASHES },
382 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
383 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
384 { {"reduce-memory-overheads", no_argument, NULL,
385 OPTION_REDUCE_MEMORY_OVERHEADS},
386 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
388 { {"relax", no_argument, NULL, OPTION_RELAX},
389 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
390 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
391 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
392 { {"retain-symbols-file", required_argument, NULL,
393 OPTION_RETAIN_SYMBOLS_FILE},
394 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
395 { {"rpath", required_argument, NULL, OPTION_RPATH},
396 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
397 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
398 '\0', N_("PATH"), N_("Set link time shared library search path"),
400 { {"shared", no_argument, NULL, OPTION_SHARED},
401 '\0', NULL, N_("Create a shared library"), ONE_DASH },
402 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
403 '\0', NULL, NULL, ONE_DASH },
404 { {"pie", no_argument, NULL, OPTION_PIE},
405 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
406 { {"pic-executable", no_argument, NULL, OPTION_PIE},
407 '\0', NULL, NULL, TWO_DASHES },
408 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
409 '\0', N_("[=ascending|descending]"),
410 N_("Sort common symbols by alignment [in specified order]"),
412 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
413 '\0', NULL, NULL, NO_HELP },
414 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
415 '\0', N_("name|alignment"),
416 N_("Sort sections by name or maximum alignment"), TWO_DASHES },
417 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
418 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
420 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
421 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
423 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
424 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
426 { {"stats", no_argument, NULL, OPTION_STATS},
427 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
428 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
429 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
430 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
431 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
432 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
433 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
434 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
435 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
437 { {"Tbss", required_argument, NULL, OPTION_TBSS},
438 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
439 { {"Tdata", required_argument, NULL, OPTION_TDATA},
440 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
441 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
442 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
443 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
444 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
445 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT},
446 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH },
447 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT},
448 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH },
449 { {"unresolved-symbols=<method>", required_argument, NULL,
450 OPTION_UNRESOLVED_SYMBOLS},
451 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
452 " ignore-all, report-all, ignore-in-object-files,\n"
453 " ignore-in-shared-libs"),
455 { {"verbose", optional_argument, NULL, OPTION_VERBOSE},
456 '\0', N_("[=NUMBER]"),
457 N_("Output lots of information during link"), TWO_DASHES },
458 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
459 '\0', NULL, NULL, NO_HELP },
460 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
461 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
462 { {"version-exports-section", required_argument, NULL,
463 OPTION_VERSION_EXPORTS_SECTION },
464 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
465 " SYMBOL as the version."),
467 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
468 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
469 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
470 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
471 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
472 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
473 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
474 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
475 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
476 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
477 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
478 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
480 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
481 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
482 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
483 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
484 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
485 '\0', NULL, N_("Warn if start of section changes due to alignment"),
487 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
488 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
490 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
491 '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
493 { {"warn-unresolved-symbols", no_argument, NULL,
494 OPTION_WARN_UNRESOLVED_SYMBOLS},
495 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
496 { {"error-unresolved-symbols", no_argument, NULL,
497 OPTION_ERROR_UNRESOLVED_SYMBOLS},
498 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
499 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
500 '\0', NULL, N_("Include all objects from following archives"),
502 { {"wrap", required_argument, NULL, OPTION_WRAP},
503 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
504 { {"ignore-unresolved-symbol", required_argument, NULL,
505 OPTION_IGNORE_UNRESOLVED_SYMBOL},
507 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES },
508 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE},
509 '\0', NULL, N_("Push state of flags governing input file handling"),
511 { {"pop-state", no_argument, NULL, OPTION_POP_STATE},
512 '\0', NULL, N_("Pop state of flags governing input file handling"),
516 #define OPTION_COUNT ARRAY_SIZE (ld_options)
519 parse_args (unsigned argc, char **argv)
524 char *default_dirlist = NULL;
526 struct option *longopts;
527 struct option *really_longopts;
529 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
531 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
532 longopts = (struct option *)
533 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
534 really_longopts = (struct option *)
535 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
537 /* Starting the short option string with '-' is for programs that
538 expect options and other ARGV-elements in any order and that care about
539 the ordering of the two. We describe each non-option ARGV-element
540 as if it were the argument of an option with character code 1. */
545 for (i = 0; i < OPTION_COUNT; i++)
547 if (ld_options[i].shortopt != '\0')
549 shortopts[is] = ld_options[i].shortopt;
551 if (ld_options[i].opt.has_arg == required_argument
552 || ld_options[i].opt.has_arg == optional_argument)
556 if (ld_options[i].opt.has_arg == optional_argument)
563 if (ld_options[i].opt.name != NULL)
565 if (ld_options[i].control == EXACTLY_TWO_DASHES)
567 really_longopts[irl] = ld_options[i].opt;
572 longopts[il] = ld_options[i].opt;
577 shortopts[is] = '\0';
578 longopts[il].name = NULL;
579 really_longopts[irl].name = NULL;
581 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
583 /* The -G option is ambiguous on different platforms. Sometimes it
584 specifies the largest data size to put into the small data
585 section. Sometimes it is equivalent to --shared. Unfortunately,
586 the first form takes an argument, while the second does not.
588 We need to permit the --shared form because on some platforms,
589 such as Solaris, gcc -shared will pass -G to the linker.
591 To permit either usage, we look through the argument list. If we
592 find -G not followed by a number, we change it into --shared.
593 This will work for most normal cases. */
594 for (i = 1; i < argc; i++)
595 if (strcmp (argv[i], "-G") == 0
597 || ! ISDIGIT (argv[i + 1][0])))
598 argv[i] = (char *) "--shared";
600 /* Because we permit long options to start with a single dash, and
601 we have a --library option, and the -l option is conventionally
602 used with an immediately following argument, we can have bad
603 results if somebody tries to use -l with a library whose name
604 happens to start with "ibrary", as in -li. We avoid problems by
605 simply turning -l into --library. This means that users will
606 have to use two dashes in order to use --library, which is OK
607 since that's how it is documented.
609 FIXME: It's possible that this problem can arise for other short
610 options as well, although the user does always have the recourse
611 of adding a space between the option and the argument. */
612 for (i = 1; i < argc; i++)
614 if (argv[i][0] == '-'
616 && argv[i][2] != '\0')
620 n = (char *) xmalloc (strlen (argv[i]) + 20);
621 sprintf (n, "--library=%s", argv[i] + 2);
631 static unsigned int defsym_count;
633 /* Using last_optind lets us avoid calling ldemul_parse_args
634 multiple times on a single option, which would lead to
635 confusion in the internal static variables maintained by
636 getopt. This could otherwise happen for an argument like
637 -nx, in which the -n is parsed as a single option, and we
638 loop around to pick up the -x. */
639 if (optind != last_optind)
640 if (ldemul_parse_args (argc, argv))
643 /* getopt_long_only is like getopt_long, but '-' as well as '--'
644 can indicate a long option. */
646 last_optind = optind;
647 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
650 optind = last_optind;
651 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
654 if (ldemul_handle_option (optc))
663 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
667 einfo (_("%P%F: use the --help option for usage information\n"));
669 case 1: /* File name. */
670 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
676 /* For HP/UX compatibility. Actually -a shared should mean
677 ``use only shared libraries'' but, then, we don't
678 currently support shared libraries on HP/UX anyhow. */
679 if (strcmp (optarg, "archive") == 0)
680 input_flags.dynamic = FALSE;
681 else if (strcmp (optarg, "shared") == 0
682 || strcmp (optarg, "default") == 0)
683 input_flags.dynamic = TRUE;
685 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
688 /* FIXME: We just ignore these, but we should handle them. */
689 if (strcmp (optarg, "definitions") == 0)
691 else if (strcmp (optarg, "nodefinitions") == 0)
693 else if (strcmp (optarg, "nosymbolic") == 0)
695 else if (strcmp (optarg, "pure-text") == 0)
698 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
701 ldfile_add_arch (optarg);
704 lang_add_target (optarg);
707 ldfile_open_command_file (optarg);
708 parser_input = input_mri_script;
711 case OPTION_CALL_SHARED:
712 input_flags.dynamic = TRUE;
714 case OPTION_NON_SHARED:
715 input_flags.dynamic = FALSE;
718 command_line.cref = TRUE;
719 link_info.notice_all = TRUE;
722 command_line.force_common_definition = TRUE;
726 lex_redirect (optarg, "--defsym", ++defsym_count);
727 parser_input = input_defsym;
731 case OPTION_DEMANGLE:
735 enum demangling_styles style;
737 style = cplus_demangle_name_to_style (optarg);
738 if (style == unknown_demangling)
739 einfo (_("%F%P: unknown demangling style `%s'\n"),
742 cplus_demangle_set_style (style);
745 case 'I': /* Used on Solaris. */
746 case OPTION_DYNAMIC_LINKER:
747 command_line.interpreter = optarg;
750 /* Already handled in ldmain.c. */
753 command_line.endian = ENDIAN_BIG;
756 command_line.endian = ENDIAN_LITTLE;
758 case OPTION_EMBEDDED_RELOCS:
759 command_line.embedded_relocs = TRUE;
761 case OPTION_EXPORT_DYNAMIC:
762 case 'E': /* HP/UX compatibility. */
763 link_info.export_dynamic = TRUE;
765 case OPTION_NO_EXPORT_DYNAMIC:
766 link_info.export_dynamic = FALSE;
769 lang_add_entry (optarg, TRUE);
772 if (command_line.auxiliary_filters == NULL)
774 command_line.auxiliary_filters = (char **)
775 xmalloc (2 * sizeof (char *));
776 command_line.auxiliary_filters[0] = optarg;
777 command_line.auxiliary_filters[1] = NULL;
785 for (p = command_line.auxiliary_filters; *p != NULL; p++)
787 command_line.auxiliary_filters = (char **)
788 xrealloc (command_line.auxiliary_filters,
789 (c + 2) * sizeof (char *));
790 command_line.auxiliary_filters[c] = optarg;
791 command_line.auxiliary_filters[c + 1] = NULL;
795 command_line.filter_shlib = optarg;
797 case OPTION_FORCE_EXE_SUFFIX:
798 command_line.force_exe_suffix = TRUE;
803 g_switch_value = strtoul (optarg, &end, 0);
805 einfo (_("%P%F: invalid number `%s'\n"), optarg);
811 case OPTION_GC_SECTIONS:
812 link_info.gc_sections = TRUE;
814 case OPTION_PRINT_GC_SECTIONS:
815 link_info.print_gc_sections = TRUE;
822 ldfile_add_library_path (optarg, TRUE);
825 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
828 config.map_filename = "-";
831 /* Ignore. Was handled in a pre-parse. */
834 config.map_filename = optarg;
837 config.text_read_only = FALSE;
838 config.magic_demand_paged = FALSE;
839 input_flags.dynamic = FALSE;
841 case OPTION_NO_OMAGIC:
842 config.text_read_only = TRUE;
843 config.magic_demand_paged = TRUE;
844 /* NB/ Does not set input_flags.dynamic to TRUE.
845 Use --call-shared or -Bdynamic for this. */
848 config.magic_demand_paged = FALSE;
849 input_flags.dynamic = FALSE;
851 case OPTION_NO_DEFINE_COMMON:
852 command_line.inhibit_common_definition = TRUE;
854 case OPTION_NO_DEMANGLE:
857 case OPTION_NO_GC_SECTIONS:
858 link_info.gc_sections = FALSE;
860 case OPTION_NO_PRINT_GC_SECTIONS:
861 link_info.print_gc_sections = FALSE;
863 case OPTION_NO_KEEP_MEMORY:
864 link_info.keep_memory = FALSE;
866 case OPTION_NO_UNDEFINED:
867 link_info.unresolved_syms_in_objects
868 = how_to_report_unresolved_symbols;
870 case OPTION_ALLOW_SHLIB_UNDEFINED:
871 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
873 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
874 link_info.unresolved_syms_in_shared_libs
875 = how_to_report_unresolved_symbols;
877 case OPTION_UNRESOLVED_SYMBOLS:
878 if (strcmp (optarg, "ignore-all") == 0)
880 link_info.unresolved_syms_in_objects = RM_IGNORE;
881 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
883 else if (strcmp (optarg, "report-all") == 0)
885 link_info.unresolved_syms_in_objects
886 = how_to_report_unresolved_symbols;
887 link_info.unresolved_syms_in_shared_libs
888 = how_to_report_unresolved_symbols;
890 else if (strcmp (optarg, "ignore-in-object-files") == 0)
892 link_info.unresolved_syms_in_objects = RM_IGNORE;
893 link_info.unresolved_syms_in_shared_libs
894 = how_to_report_unresolved_symbols;
896 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
898 link_info.unresolved_syms_in_objects
899 = how_to_report_unresolved_symbols;
900 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
903 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
905 case OPTION_WARN_UNRESOLVED_SYMBOLS:
906 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
907 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
908 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
909 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
910 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
913 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
914 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
915 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
916 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
917 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
918 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
920 case OPTION_ALLOW_MULTIPLE_DEFINITION:
921 link_info.allow_multiple_definition = TRUE;
923 case OPTION_NO_UNDEFINED_VERSION:
924 link_info.allow_undefined_version = FALSE;
926 case OPTION_DEFAULT_SYMVER:
927 link_info.create_default_symver = TRUE;
929 case OPTION_DEFAULT_IMPORTED_SYMVER:
930 link_info.default_imported_symver = TRUE;
932 case OPTION_NO_WARN_MISMATCH:
933 command_line.warn_mismatch = FALSE;
935 case OPTION_NO_WARN_SEARCH_MISMATCH:
936 command_line.warn_search_mismatch = FALSE;
938 case OPTION_NOINHIBIT_EXEC:
939 force_make_executable = TRUE;
941 case OPTION_NOSTDLIB:
942 config.only_cmd_line_lib_dirs = TRUE;
944 case OPTION_NO_WHOLE_ARCHIVE:
945 input_flags.whole_archive = FALSE;
948 /* FIXME "-O<non-digits> <value>" used to set the address of
949 section <non-digits>. Was this for compatibility with
950 something, or can we create a new option to do that
951 (with a syntax similar to -defsym)?
952 getopt can't handle two args to an option without kludges. */
954 /* Enable optimizations of output files. */
955 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
958 lang_add_output (optarg, 0);
961 lang_add_output_format (optarg, NULL, NULL, 0);
963 case OPTION_PRINT_OUTPUT_FORMAT:
964 command_line.print_output_format = TRUE;
966 #ifdef ENABLE_PLUGINS
968 plugin_opt_plugin (optarg);
970 case OPTION_PLUGIN_OPT:
971 if (plugin_opt_plugin_arg (optarg))
972 einfo(_("%P%F: bad -plugin-opt option\n"));
974 #endif /* ENABLE_PLUGINS */
976 link_info.emitrelocations = TRUE;
980 if (optind == last_optind)
981 /* This can happen if the user put "-rpath,a" on the command
982 line. (Or something similar. The comma is important).
983 Getopt becomes confused and thinks that this is a -r option
984 but it cannot parse the text after the -r so it refuses to
985 increment the optind counter. Detect this case and issue
986 an error message here. We cannot just make this a warning,
987 increment optind, and continue because getopt is too confused
988 and will seg-fault the next time around. */
989 einfo(_("%P%F: bad -rpath option\n"));
991 link_info.relocatable = TRUE;
992 config.build_constructors = FALSE;
993 config.magic_demand_paged = FALSE;
994 config.text_read_only = FALSE;
995 input_flags.dynamic = FALSE;
998 /* The GNU linker traditionally uses -R to mean to include
999 only the symbols from a file. The Solaris linker uses -R
1000 to set the path used by the runtime linker to find
1001 libraries. This is the GNU linker -rpath argument. We
1002 try to support both simultaneously by checking the file
1003 named. If it is a directory, rather than a regular file,
1004 we assume -rpath was meant. */
1008 if (stat (optarg, &s) >= 0
1009 && ! S_ISDIR (s.st_mode))
1011 lang_add_input_file (optarg,
1012 lang_input_file_is_symbols_only_enum,
1019 if (command_line.rpath == NULL)
1020 command_line.rpath = xstrdup (optarg);
1023 size_t rpath_len = strlen (command_line.rpath);
1024 size_t optarg_len = strlen (optarg);
1026 char *cp = command_line.rpath;
1028 /* First see whether OPTARG is already in the path. */
1031 if (strncmp (optarg, cp, optarg_len) == 0
1032 && (cp[optarg_len] == 0
1033 || cp[optarg_len] == config.rpath_separator))
1037 /* Not yet found. */
1038 cp = strchr (cp, config.rpath_separator);
1046 buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1047 sprintf (buf, "%s%c%s", command_line.rpath,
1048 config.rpath_separator, optarg);
1049 free (command_line.rpath);
1050 command_line.rpath = buf;
1054 case OPTION_RPATH_LINK:
1055 if (command_line.rpath_link == NULL)
1056 command_line.rpath_link = xstrdup (optarg);
1061 buf = (char *) xmalloc (strlen (command_line.rpath_link)
1064 sprintf (buf, "%s%c%s", command_line.rpath_link,
1065 config.rpath_separator, optarg);
1066 free (command_line.rpath_link);
1067 command_line.rpath_link = buf;
1070 case OPTION_NO_RELAX:
1076 case OPTION_RETAIN_SYMBOLS_FILE:
1077 add_keepsyms_file (optarg);
1080 link_info.strip = strip_debugger;
1083 link_info.strip = strip_all;
1085 case OPTION_STRIP_DISCARDED:
1086 link_info.strip_discarded = TRUE;
1088 case OPTION_NO_STRIP_DISCARDED:
1089 link_info.strip_discarded = FALSE;
1092 if (config.has_shared)
1094 link_info.shared = TRUE;
1095 /* When creating a shared library, the default
1096 behaviour is to ignore any unresolved references. */
1097 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1098 link_info.unresolved_syms_in_objects = RM_IGNORE;
1099 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1100 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1103 einfo (_("%P%F: -shared not supported\n"));
1106 if (config.has_shared)
1108 link_info.shared = TRUE;
1109 link_info.pie = TRUE;
1112 einfo (_("%P%F: -pie not supported\n"));
1114 case 'h': /* Used on Solaris. */
1116 if (optarg[0] == '\0' && command_line.soname
1117 && command_line.soname[0])
1118 einfo (_("%P: SONAME must not be empty string; keeping previous one\n"));
1120 command_line.soname = optarg;
1122 case OPTION_SORT_COMMON:
1124 || strcmp (optarg, N_("descending")) == 0)
1125 config.sort_common = sort_descending;
1126 else if (strcmp (optarg, N_("ascending")) == 0)
1127 config.sort_common = sort_ascending;
1129 einfo (_("%P%F: invalid common section sorting option: %s\n"),
1132 case OPTION_SORT_SECTION:
1133 if (strcmp (optarg, N_("name")) == 0)
1134 sort_section = by_name;
1135 else if (strcmp (optarg, N_("alignment")) == 0)
1136 sort_section = by_alignment;
1138 einfo (_("%P%F: invalid section sorting option: %s\n"),
1142 config.stats = TRUE;
1144 case OPTION_SYMBOLIC:
1145 command_line.symbolic = symbolic;
1147 case OPTION_SYMBOLIC_FUNCTIONS:
1148 command_line.symbolic = symbolic_functions;
1154 previous_script_handle = saved_script_handle;
1155 ldfile_open_command_file (optarg);
1156 parser_input = input_script;
1158 previous_script_handle = NULL;
1160 case OPTION_DEFAULT_SCRIPT:
1161 command_line.default_script = optarg;
1163 case OPTION_SECTION_START:
1169 /* Check for <something>=<somthing>... */
1170 optarg2 = strchr (optarg, '=');
1171 if (optarg2 == NULL)
1172 einfo (_("%P%F: invalid argument to option"
1173 " \"--section-start\"\n"));
1177 /* So far so good. Are all the args present? */
1178 if ((*optarg == '\0') || (*optarg2 == '\0'))
1179 einfo (_("%P%F: missing argument(s) to option"
1180 " \"--section-start\"\n"));
1182 /* We must copy the section name as set_section_start
1183 doesn't do it for us. */
1184 len = optarg2 - optarg;
1185 sec_name = (char *) xmalloc (len);
1186 memcpy (sec_name, optarg, len - 1);
1187 sec_name[len - 1] = 0;
1189 /* Then set it... */
1190 set_section_start (sec_name, optarg2);
1193 case OPTION_TARGET_HELP:
1194 /* Mention any target specific options. */
1195 ldemul_list_emulation_options (stdout);
1198 set_segment_start (".bss", optarg);
1201 set_segment_start (".data", optarg);
1204 set_segment_start (".text", optarg);
1206 case OPTION_TTEXT_SEGMENT:
1207 set_segment_start (".text-segment", optarg);
1209 case OPTION_TRODATA_SEGMENT:
1210 set_segment_start (".rodata-segment", optarg);
1212 case OPTION_TLDATA_SEGMENT:
1213 set_segment_start (".ldata-segment", optarg);
1215 case OPTION_TRADITIONAL_FORMAT:
1216 link_info.traditional_format = TRUE;
1218 case OPTION_TASK_LINK:
1219 link_info.task_link = TRUE;
1220 /* Fall through - do an implied -r option. */
1222 link_info.relocatable = TRUE;
1223 config.build_constructors = TRUE;
1224 config.magic_demand_paged = FALSE;
1225 config.text_read_only = FALSE;
1226 input_flags.dynamic = FALSE;
1229 ldlang_add_undef (optarg, TRUE);
1233 lang_add_unique (optarg);
1235 config.unique_orphan_sections = TRUE;
1237 case OPTION_VERBOSE:
1239 version_printed = TRUE;
1241 overflow_cutoff_limit = -2;
1245 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1247 einfo (_("%P%F: invalid number `%s'\n"), optarg);
1248 #ifdef ENABLE_PLUGINS
1249 report_plugin_symbols = level > 1;
1250 #endif /* ENABLE_PLUGINS */
1255 version_printed = TRUE;
1259 version_printed = TRUE;
1261 case OPTION_VERSION:
1265 case OPTION_VERSION_SCRIPT:
1266 /* This option indicates a small script that only specifies
1267 version information. Read it, but don't assume that
1268 we've seen a linker script. */
1270 FILE *hold_script_handle;
1272 hold_script_handle = saved_script_handle;
1273 ldfile_open_command_file (optarg);
1274 saved_script_handle = hold_script_handle;
1275 parser_input = input_version_script;
1279 case OPTION_VERSION_EXPORTS_SECTION:
1280 /* This option records a version symbol to be applied to the
1281 symbols listed for export to be found in the object files
1282 .exports sections. */
1283 command_line.version_exports_section = optarg;
1285 case OPTION_DYNAMIC_LIST_DATA:
1286 command_line.dynamic_list = dynamic_list_data;
1287 if (command_line.symbolic == symbolic)
1288 command_line.symbolic = symbolic_unset;
1290 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1291 lang_append_dynamic_list_cpp_typeinfo ();
1292 if (command_line.dynamic_list != dynamic_list_data)
1293 command_line.dynamic_list = dynamic_list;
1294 if (command_line.symbolic == symbolic)
1295 command_line.symbolic = symbolic_unset;
1297 case OPTION_DYNAMIC_LIST_CPP_NEW:
1298 lang_append_dynamic_list_cpp_new ();
1299 if (command_line.dynamic_list != dynamic_list_data)
1300 command_line.dynamic_list = dynamic_list;
1301 if (command_line.symbolic == symbolic)
1302 command_line.symbolic = symbolic_unset;
1304 case OPTION_DYNAMIC_LIST:
1305 /* This option indicates a small script that only specifies
1306 a dynamic list. Read it, but don't assume that we've
1307 seen a linker script. */
1309 FILE *hold_script_handle;
1311 hold_script_handle = saved_script_handle;
1312 ldfile_open_command_file (optarg);
1313 saved_script_handle = hold_script_handle;
1314 parser_input = input_dynamic_list;
1317 if (command_line.dynamic_list != dynamic_list_data)
1318 command_line.dynamic_list = dynamic_list;
1319 if (command_line.symbolic == symbolic)
1320 command_line.symbolic = symbolic_unset;
1322 case OPTION_WARN_COMMON:
1323 config.warn_common = TRUE;
1325 case OPTION_WARN_CONSTRUCTORS:
1326 config.warn_constructors = TRUE;
1328 case OPTION_WARN_FATAL:
1329 config.fatal_warnings = TRUE;
1331 case OPTION_NO_WARN_FATAL:
1332 config.fatal_warnings = FALSE;
1334 case OPTION_WARN_MULTIPLE_GP:
1335 config.warn_multiple_gp = TRUE;
1337 case OPTION_WARN_ONCE:
1338 config.warn_once = TRUE;
1340 case OPTION_WARN_SECTION_ALIGN:
1341 config.warn_section_align = TRUE;
1343 case OPTION_WARN_SHARED_TEXTREL:
1344 link_info.warn_shared_textrel = TRUE;
1346 case OPTION_WARN_ALTERNATE_EM:
1347 link_info.warn_alternate_em = TRUE;
1349 case OPTION_WHOLE_ARCHIVE:
1350 input_flags.whole_archive = TRUE;
1352 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1353 input_flags.add_DT_NEEDED_for_dynamic = TRUE;
1355 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1356 input_flags.add_DT_NEEDED_for_dynamic = FALSE;
1358 case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1359 input_flags.add_DT_NEEDED_for_regular = TRUE;
1361 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1362 input_flags.add_DT_NEEDED_for_regular = FALSE;
1367 case OPTION_IGNORE_UNRESOLVED_SYMBOL:
1368 add_ignoresym (&link_info, optarg);
1370 case OPTION_DISCARD_NONE:
1371 link_info.discard = discard_none;
1374 link_info.discard = discard_l;
1377 link_info.discard = discard_all;
1380 if (CONST_STRNEQ (optarg, "P,"))
1382 if (default_dirlist != NULL)
1383 free (default_dirlist);
1384 default_dirlist = xstrdup (optarg);
1389 case OPTION_SPARE_DYNAMIC_TAGS:
1390 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1392 case OPTION_SPLIT_BY_RELOC:
1394 config.split_by_reloc = strtoul (optarg, NULL, 0);
1396 config.split_by_reloc = 32768;
1398 case OPTION_SPLIT_BY_FILE:
1400 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1402 config.split_by_file = 1;
1404 case OPTION_CHECK_SECTIONS:
1405 command_line.check_section_addresses = 1;
1407 case OPTION_NO_CHECK_SECTIONS:
1408 command_line.check_section_addresses = 0;
1410 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1411 command_line.accept_unknown_input_arch = TRUE;
1413 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1414 command_line.accept_unknown_input_arch = FALSE;
1417 lang_enter_group ();
1422 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1424 lang_leave_group ();
1429 link_info.init_function = optarg;
1433 link_info.fini_function = optarg;
1436 case OPTION_REDUCE_MEMORY_OVERHEADS:
1437 link_info.reduce_memory_overheads = TRUE;
1438 if (config.hash_table_size == 0)
1439 config.hash_table_size = 1021;
1442 case OPTION_HASH_SIZE:
1444 bfd_size_type new_size;
1446 new_size = strtoul (optarg, NULL, 0);
1448 config.hash_table_size = new_size;
1450 einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1454 case OPTION_PUSH_STATE:
1455 input_flags.pushed = xmemdup (&input_flags,
1456 sizeof (input_flags),
1457 sizeof (input_flags));
1460 case OPTION_POP_STATE:
1461 if (input_flags.pushed == NULL)
1462 einfo (_("%P%F: no state pushed before popping\n"));
1465 struct lang_input_statement_flags *oldp = input_flags.pushed;
1466 memcpy (&input_flags, oldp, sizeof (input_flags));
1473 if (command_line.soname && command_line.soname[0] == '\0')
1475 einfo (_("%P: SONAME must not be empty string; ignored\n"));
1476 command_line.soname = NULL;
1481 lang_leave_group ();
1485 if (default_dirlist != NULL)
1487 set_default_dirlist (default_dirlist);
1488 free (default_dirlist);
1491 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1492 /* FIXME: Should we allow emulations a chance to set this ? */
1493 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1495 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1496 /* FIXME: Should we allow emulations a chance to set this ? */
1497 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1499 if (link_info.relocatable)
1501 if (command_line.check_section_addresses < 0)
1502 command_line.check_section_addresses = 0;
1503 if (link_info.shared)
1504 einfo (_("%P%F: -r and -shared may not be used together\n"));
1507 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
1508 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
1509 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are
1510 for shared libraries. -Bsymbolic overrides all others and vice
1512 switch (command_line.symbolic)
1514 case symbolic_unset:
1517 /* -Bsymbolic is for shared library only. */
1518 if (link_info.shared)
1520 link_info.symbolic = TRUE;
1521 /* Should we free the unused memory? */
1522 link_info.dynamic_list = NULL;
1523 command_line.dynamic_list = dynamic_list_unset;
1526 case symbolic_functions:
1527 /* -Bsymbolic-functions is for shared library only. */
1528 if (link_info.shared)
1529 command_line.dynamic_list = dynamic_list_data;
1533 switch (command_line.dynamic_list)
1535 case dynamic_list_unset:
1537 case dynamic_list_data:
1538 link_info.dynamic_data = TRUE;
1540 link_info.dynamic = TRUE;
1544 if (! link_info.shared)
1546 if (command_line.filter_shlib)
1547 einfo (_("%P%F: -F may not be used without -shared\n"));
1548 if (command_line.auxiliary_filters)
1549 einfo (_("%P%F: -f may not be used without -shared\n"));
1552 if (! link_info.shared || link_info.pie)
1553 link_info.executable = TRUE;
1555 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
1556 don't see how else this can be handled, since in this case we
1557 must preserve all externally visible symbols. */
1558 if (link_info.relocatable && link_info.strip == strip_all)
1560 link_info.strip = strip_debugger;
1561 if (link_info.discard == discard_sec_merge)
1562 link_info.discard = discard_all;
1566 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1567 library search path. */
1570 set_default_dirlist (char *dirlist_ptr)
1576 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1579 if (*dirlist_ptr != '\0')
1580 ldfile_add_library_path (dirlist_ptr, TRUE);
1583 dirlist_ptr = p + 1;
1588 set_section_start (char *sect, char *valstr)
1591 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1593 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1594 lang_section_start (sect, exp_intop (val), NULL);
1598 set_segment_start (const char *section, char *valstr)
1604 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1606 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1607 /* If we already have an entry for this segment, update the existing
1610 for (seg = segments; seg; seg = seg->next)
1611 if (strcmp (seg->name, name) == 0)
1616 /* There was no existing value so we must create a new segment
1618 seg = (segment_type *) stat_alloc (sizeof (*seg));
1622 /* Add it to the linked list of segments. */
1623 seg->next = segments;
1625 /* Historically, -Ttext and friends set the base address of a
1626 particular section. For backwards compatibility, we still do
1627 that. If a SEGMENT_START directive is seen, the section address
1628 assignment will be disabled. */
1629 lang_section_start (section, exp_intop (val), seg);
1633 /* Print help messages for the options. */
1639 const char **targets, **pp;
1642 printf (_("Usage: %s [options] file...\n"), program_name);
1644 printf (_("Options:\n"));
1645 for (i = 0; i < OPTION_COUNT; i++)
1647 if (ld_options[i].doc != NULL)
1660 if (ld_options[j].shortopt != '\0'
1661 && ld_options[j].control != NO_HELP)
1663 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1664 len += (comma ? 2 : 0) + 2;
1665 if (ld_options[j].arg != NULL)
1667 if (ld_options[j].opt.has_arg != optional_argument)
1672 printf ("%s", _(ld_options[j].arg));
1673 len += strlen (_(ld_options[j].arg));
1679 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1684 if (ld_options[j].opt.name != NULL
1685 && ld_options[j].control != NO_HELP)
1688 (ld_options[j].control == TWO_DASHES
1689 || ld_options[j].control == EXACTLY_TWO_DASHES);
1693 two_dashes ? "-" : "",
1694 ld_options[j].opt.name);
1695 len += ((comma ? 2 : 0)
1697 + (two_dashes ? 1 : 0)
1698 + strlen (ld_options[j].opt.name));
1699 if (ld_options[j].arg != NULL)
1701 printf (" %s", _(ld_options[j].arg));
1702 len += 1 + strlen (_(ld_options[j].arg));
1708 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1716 for (; len < 30; len++)
1719 printf ("%s\n", _(ld_options[i].doc));
1722 printf (_(" @FILE"));
1723 for (len = strlen (" @FILE"); len < 30; len++)
1725 printf (_("Read options from FILE\n"));
1727 /* Note: Various tools (such as libtool) depend upon the
1728 format of the listings below - do not change them. */
1729 /* xgettext:c-format */
1730 printf (_("%s: supported targets:"), program_name);
1731 targets = bfd_target_list ();
1732 for (pp = targets; *pp != NULL; pp++)
1733 printf (" %s", *pp);
1737 /* xgettext:c-format */
1738 printf (_("%s: supported emulations: "), program_name);
1739 ldemul_list_emulations (stdout);
1742 /* xgettext:c-format */
1743 printf (_("%s: emulation specific options:\n"), program_name);
1744 ldemul_list_emulation_options (stdout);
1747 if (REPORT_BUGS_TO[0])
1748 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);