1 /* Parse options for the GNU linker.
2 Copyright (C) 1991-2017 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 { {"force-group-allocation", no_argument, NULL,
116 OPTION_FORCE_GROUP_ALLOCATION},
117 '\0', NULL, N_("Force group members out of groups"), TWO_DASHES },
118 { {"entry", required_argument, NULL, 'e'},
119 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
120 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
121 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
122 { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
123 '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
124 { {"EB", no_argument, NULL, OPTION_EB},
125 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
126 { {"EL", no_argument, NULL, OPTION_EL},
127 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
128 { {"auxiliary", required_argument, NULL, 'f'},
129 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
131 { {"filter", required_argument, NULL, 'F'},
132 'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
134 { {NULL, no_argument, NULL, '\0'},
135 'g', NULL, N_("Ignored"), ONE_DASH },
136 { {"gpsize", required_argument, NULL, 'G'},
137 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
139 { {"soname", required_argument, NULL, OPTION_SONAME},
140 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
141 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
142 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
144 { {"no-dynamic-linker", no_argument, NULL, OPTION_NO_DYNAMIC_LINKER},
145 '\0', NULL, N_("Produce an executable with no program interpreter header"),
147 { {"library", required_argument, NULL, 'l'},
148 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
149 { {"library-path", required_argument, NULL, 'L'},
150 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
152 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
153 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
154 { {NULL, required_argument, NULL, '\0'},
155 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
156 { {"print-map", no_argument, NULL, 'M'},
157 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
158 { {"nmagic", no_argument, NULL, 'n'},
159 'n', NULL, N_("Do not page align data"), TWO_DASHES },
160 { {"omagic", no_argument, NULL, 'N'},
161 'N', NULL, N_("Do not page align data, do not make text readonly"),
162 EXACTLY_TWO_DASHES },
163 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
164 '\0', NULL, N_("Page align data, make text readonly"),
165 EXACTLY_TWO_DASHES },
166 { {"output", required_argument, NULL, 'o'},
167 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
168 { {NULL, required_argument, NULL, '\0'},
169 'O', NULL, N_("Optimize output file"), ONE_DASH },
170 { {"out-implib", required_argument, NULL, OPTION_OUT_IMPLIB},
171 '\0', N_("FILE"), N_("Generate import library"), TWO_DASHES },
172 #ifdef ENABLE_PLUGINS
173 { {"plugin", required_argument, NULL, OPTION_PLUGIN},
174 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
175 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
176 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
177 { {"flto", optional_argument, NULL, OPTION_IGNORE},
178 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
180 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
181 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
183 #endif /* ENABLE_PLUGINS */
184 { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE},
185 '\0', NULL, N_("Ignored for GCC linker option compatibility"),
187 { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE},
188 '\0', NULL, N_("Ignored for gold option compatibility"),
190 { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE},
191 '\0', NULL, N_("Ignored for gold option compatibility"),
193 { {"Qy", no_argument, NULL, OPTION_IGNORE},
194 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
195 { {"emit-relocs", no_argument, NULL, 'q'},
196 'q', NULL, "Generate relocations in final output", TWO_DASHES },
197 { {"relocatable", no_argument, NULL, 'r'},
198 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
199 { {NULL, no_argument, NULL, '\0'},
200 'i', NULL, NULL, ONE_DASH },
201 { {"just-symbols", required_argument, NULL, 'R'},
202 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
204 { {"strip-all", no_argument, NULL, 's'},
205 's', NULL, N_("Strip all symbols"), TWO_DASHES },
206 { {"strip-debug", no_argument, NULL, 'S'},
207 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
208 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
209 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
210 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
211 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
212 { {"trace", no_argument, NULL, 't'},
213 't', NULL, N_("Trace file opens"), TWO_DASHES },
214 { {"script", required_argument, NULL, 'T'},
215 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
216 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
217 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
218 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
219 '\0', NULL, NULL, ONE_DASH },
220 { {"undefined", required_argument, NULL, 'u'},
221 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
223 { {"require-defined", required_argument, NULL, OPTION_REQUIRE_DEFINED_SYMBOL},
224 '\0', N_("SYMBOL"), N_("Require SYMBOL be defined in the final output"),
226 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
227 '\0', N_("[=SECTION]"),
228 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
229 { {"Ur", no_argument, NULL, OPTION_UR},
230 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
231 { {"version", no_argument, NULL, OPTION_VERSION},
232 'v', NULL, N_("Print version information"), TWO_DASHES },
233 { {NULL, no_argument, NULL, '\0'},
234 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
235 { {"discard-all", no_argument, NULL, 'x'},
236 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
237 { {"discard-locals", no_argument, NULL, 'X'},
238 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
239 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
240 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
241 { {"trace-symbol", required_argument, NULL, 'y'},
242 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
243 { {NULL, required_argument, NULL, '\0'},
244 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
246 { {"start-group", no_argument, NULL, '('},
247 '(', NULL, N_("Start a group"), TWO_DASHES },
248 { {"end-group", no_argument, NULL, ')'},
249 ')', NULL, N_("End a group"), TWO_DASHES },
250 { {"accept-unknown-input-arch", no_argument, NULL,
251 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
253 N_("Accept input files whose architecture cannot be determined"),
255 { {"no-accept-unknown-input-arch", no_argument, NULL,
256 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
257 '\0', NULL, N_("Reject input files whose architecture is unknown"),
260 /* The next two options are deprecated because of their similarity to
261 --as-needed and --no-as-needed. They have been replaced by
262 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */
263 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
264 '\0', NULL, NULL, NO_HELP },
265 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
266 '\0', NULL, NULL, NO_HELP },
268 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
269 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
271 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
272 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
273 " the command line"),
275 { {"assert", required_argument, NULL, OPTION_ASSERT},
276 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
277 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
278 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
279 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
280 '\0', NULL, NULL, ONE_DASH },
281 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
282 '\0', NULL, NULL, ONE_DASH },
283 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
284 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
285 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
286 '\0', NULL, NULL, ONE_DASH },
287 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
288 '\0', NULL, NULL, ONE_DASH },
289 { {"static", no_argument, NULL, OPTION_NON_SHARED},
290 '\0', NULL, NULL, ONE_DASH },
291 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
292 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
293 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
294 '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
295 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
296 '\0', NULL, N_("Check section addresses for overlaps (default)"),
298 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
299 '\0', NULL, N_("Do not check section addresses for overlaps"),
301 { {"copy-dt-needed-entries", no_argument, NULL,
302 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
303 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
305 { {"no-copy-dt-needed-entries", no_argument, NULL,
306 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
307 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
310 { {"cref", no_argument, NULL, OPTION_CREF},
311 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
312 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
313 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
314 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
315 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
317 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
318 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
319 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
320 '\0', NULL, N_("Treat warnings as errors"),
322 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
323 '\0', NULL, N_("Do not treat warnings as errors (default)"),
325 { {"fini", required_argument, NULL, OPTION_FINI},
326 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
327 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
328 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
329 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
330 '\0', NULL, N_("Remove unused sections (on some targets)"),
332 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
333 '\0', NULL, N_("Don't remove unused sections (default)"),
335 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
336 '\0', NULL, N_("List removed unused sections on stderr"),
338 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
339 '\0', NULL, N_("Do not list removed unused sections"),
341 { {"gc-keep-exported", no_argument, NULL, OPTION_GC_KEEP_EXPORTED},
342 '\0', NULL, N_("Keep exported symbols when removing unused sections"),
344 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
345 '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
347 { {"help", no_argument, NULL, OPTION_HELP},
348 '\0', NULL, N_("Print option help"), TWO_DASHES },
349 { {"init", required_argument, NULL, OPTION_INIT},
350 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
351 { {"Map", required_argument, NULL, OPTION_MAP},
352 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
353 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
354 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
355 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
356 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
357 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
358 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
359 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
360 '\0', NULL, N_("Do not allow unresolved references in object files"),
362 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
363 '\0', NULL, N_("Allow unresolved references in shared libraries"),
365 { {"no-allow-shlib-undefined", no_argument, NULL,
366 OPTION_NO_ALLOW_SHLIB_UNDEFINED},
367 '\0', NULL, N_("Do not allow unresolved references in shared libs"),
369 { {"allow-multiple-definition", no_argument, NULL,
370 OPTION_ALLOW_MULTIPLE_DEFINITION},
371 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
372 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
373 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
374 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
375 '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
376 { {"default-imported-symver", no_argument, NULL,
377 OPTION_DEFAULT_IMPORTED_SYMVER},
378 '\0', NULL, N_("Create default symbol version for imported symbols"),
380 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
381 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
382 { {"no-warn-search-mismatch", no_argument, NULL,
383 OPTION_NO_WARN_SEARCH_MISMATCH},
384 '\0', NULL, N_("Don't warn on finding an incompatible library"),
386 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
387 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
388 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
389 '\0', NULL, N_("Create an output file even if errors occur"),
391 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
392 '\0', NULL, NULL, NO_HELP },
393 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
394 '\0', NULL, N_("Only use library directories specified on\n"
395 " the command line"),
397 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
398 '\0', N_("TARGET"), N_("Specify target of output file"),
399 EXACTLY_TWO_DASHES },
400 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT},
401 '\0', NULL, N_("Print default output format"), TWO_DASHES },
402 { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT},
403 '\0', NULL, N_("Print current sysroot"), TWO_DASHES },
404 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
405 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
406 { {"reduce-memory-overheads", no_argument, NULL,
407 OPTION_REDUCE_MEMORY_OVERHEADS},
408 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
410 { {"relax", no_argument, NULL, OPTION_RELAX},
411 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
412 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
413 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
414 { {"retain-symbols-file", required_argument, NULL,
415 OPTION_RETAIN_SYMBOLS_FILE},
416 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
417 { {"rpath", required_argument, NULL, OPTION_RPATH},
418 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
419 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
420 '\0', N_("PATH"), N_("Set link time shared library search path"),
422 { {"shared", no_argument, NULL, OPTION_SHARED},
423 '\0', NULL, N_("Create a shared library"), ONE_DASH },
424 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
425 '\0', NULL, NULL, ONE_DASH },
426 { {"pie", no_argument, NULL, OPTION_PIE},
427 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
428 { {"pic-executable", no_argument, NULL, OPTION_PIE},
429 '\0', NULL, NULL, TWO_DASHES },
430 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
431 '\0', N_("[=ascending|descending]"),
432 N_("Sort common symbols by alignment [in specified order]"),
434 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
435 '\0', NULL, NULL, NO_HELP },
436 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
437 '\0', N_("name|alignment"),
438 N_("Sort sections by name or maximum alignment"), TWO_DASHES },
439 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
440 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
442 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
443 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
445 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
446 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
448 { {"stats", no_argument, NULL, OPTION_STATS},
449 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
450 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
451 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
452 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
453 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
454 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
455 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
456 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
457 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
459 { {"Tbss", required_argument, NULL, OPTION_TBSS},
460 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
461 { {"Tdata", required_argument, NULL, OPTION_TDATA},
462 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
463 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
464 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
465 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
466 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
467 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT},
468 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH },
469 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT},
470 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH },
471 { {"unresolved-symbols=<method>", required_argument, NULL,
472 OPTION_UNRESOLVED_SYMBOLS},
473 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
474 " ignore-all, report-all, ignore-in-object-files,\n"
475 " ignore-in-shared-libs"),
477 { {"verbose", optional_argument, NULL, OPTION_VERBOSE},
478 '\0', N_("[=NUMBER]"),
479 N_("Output lots of information during link"), TWO_DASHES },
480 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
481 '\0', NULL, NULL, NO_HELP },
482 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
483 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
484 { {"version-exports-section", required_argument, NULL,
485 OPTION_VERSION_EXPORTS_SECTION },
486 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
487 " SYMBOL as the version."),
489 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
490 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
491 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
492 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
493 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
494 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
495 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
496 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
497 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
498 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
499 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
500 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
502 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
503 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
504 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
505 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
506 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
507 '\0', NULL, N_("Warn if start of section changes due to alignment"),
509 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
510 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
512 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
513 '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
515 { {"warn-unresolved-symbols", no_argument, NULL,
516 OPTION_WARN_UNRESOLVED_SYMBOLS},
517 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
518 { {"error-unresolved-symbols", no_argument, NULL,
519 OPTION_ERROR_UNRESOLVED_SYMBOLS},
520 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
521 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
522 '\0', NULL, N_("Include all objects from following archives"),
524 { {"wrap", required_argument, NULL, OPTION_WRAP},
525 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
526 { {"ignore-unresolved-symbol", required_argument, NULL,
527 OPTION_IGNORE_UNRESOLVED_SYMBOL},
529 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES },
530 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE},
531 '\0', NULL, N_("Push state of flags governing input file handling"),
533 { {"pop-state", no_argument, NULL, OPTION_POP_STATE},
534 '\0', NULL, N_("Pop state of flags governing input file handling"),
536 { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE},
537 '\0', NULL, N_("Report target memory usage"), TWO_DASHES },
538 { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING},
539 '\0', N_("=MODE"), N_("Control how orphan sections are handled."),
543 #define OPTION_COUNT ARRAY_SIZE (ld_options)
546 parse_args (unsigned argc, char **argv)
551 char *default_dirlist = NULL;
553 struct option *longopts;
554 struct option *really_longopts;
556 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
558 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
559 longopts = (struct option *)
560 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
561 really_longopts = (struct option *)
562 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
564 /* Starting the short option string with '-' is for programs that
565 expect options and other ARGV-elements in any order and that care about
566 the ordering of the two. We describe each non-option ARGV-element
567 as if it were the argument of an option with character code 1. */
572 for (i = 0; i < OPTION_COUNT; i++)
574 if (ld_options[i].shortopt != '\0')
576 shortopts[is] = ld_options[i].shortopt;
578 if (ld_options[i].opt.has_arg == required_argument
579 || ld_options[i].opt.has_arg == optional_argument)
583 if (ld_options[i].opt.has_arg == optional_argument)
590 if (ld_options[i].opt.name != NULL)
592 if (ld_options[i].control == EXACTLY_TWO_DASHES)
594 really_longopts[irl] = ld_options[i].opt;
599 longopts[il] = ld_options[i].opt;
604 shortopts[is] = '\0';
605 longopts[il].name = NULL;
606 really_longopts[irl].name = NULL;
608 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
610 /* The -G option is ambiguous on different platforms. Sometimes it
611 specifies the largest data size to put into the small data
612 section. Sometimes it is equivalent to --shared. Unfortunately,
613 the first form takes an argument, while the second does not.
615 We need to permit the --shared form because on some platforms,
616 such as Solaris, gcc -shared will pass -G to the linker.
618 To permit either usage, we look through the argument list. If we
619 find -G not followed by a number, we change it into --shared.
620 This will work for most normal cases. */
621 for (i = 1; i < argc; i++)
622 if (strcmp (argv[i], "-G") == 0
624 || ! ISDIGIT (argv[i + 1][0])))
625 argv[i] = (char *) "--shared";
627 /* Because we permit long options to start with a single dash, and
628 we have a --library option, and the -l option is conventionally
629 used with an immediately following argument, we can have bad
630 results if somebody tries to use -l with a library whose name
631 happens to start with "ibrary", as in -li. We avoid problems by
632 simply turning -l into --library. This means that users will
633 have to use two dashes in order to use --library, which is OK
634 since that's how it is documented.
636 FIXME: It's possible that this problem can arise for other short
637 options as well, although the user does always have the recourse
638 of adding a space between the option and the argument. */
639 for (i = 1; i < argc; i++)
641 if (argv[i][0] == '-'
643 && argv[i][2] != '\0')
647 n = (char *) xmalloc (strlen (argv[i]) + 20);
648 sprintf (n, "--library=%s", argv[i] + 2);
658 static unsigned int defsym_count;
660 /* Using last_optind lets us avoid calling ldemul_parse_args
661 multiple times on a single option, which would lead to
662 confusion in the internal static variables maintained by
663 getopt. This could otherwise happen for an argument like
664 -nx, in which the -n is parsed as a single option, and we
665 loop around to pick up the -x. */
666 if (optind != last_optind)
667 if (ldemul_parse_args (argc, argv))
670 /* getopt_long_only is like getopt_long, but '-' as well as '--'
671 can indicate a long option. */
673 last_optind = optind;
674 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
677 optind = last_optind;
678 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
681 if (ldemul_handle_option (optc))
691 /* If the last word on the command line is an option that
692 requires an argument, getopt will refuse to recognise it.
693 Try to catch such options here and issue a more helpful
694 error message than just "unrecognized option". */
697 for (opt = ARRAY_SIZE (ld_options); opt--;)
698 if (ld_options[opt].opt.has_arg == required_argument
699 /* FIXME: There are a few short options that do not
700 have long equivalents, but which require arguments.
701 We should handle them too. */
702 && ld_options[opt].opt.name != NULL
703 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0)
705 einfo (_("%P: %s: missing argument\n"), argv[last_optind]);
710 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
715 einfo (_("%P%F: use the --help option for usage information\n"));
718 case 1: /* File name. */
719 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
725 /* For HP/UX compatibility. Actually -a shared should mean
726 ``use only shared libraries'' but, then, we don't
727 currently support shared libraries on HP/UX anyhow. */
728 if (strcmp (optarg, "archive") == 0)
729 input_flags.dynamic = FALSE;
730 else if (strcmp (optarg, "shared") == 0
731 || strcmp (optarg, "default") == 0)
732 input_flags.dynamic = TRUE;
734 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
737 /* FIXME: We just ignore these, but we should handle them. */
738 if (strcmp (optarg, "definitions") == 0)
740 else if (strcmp (optarg, "nodefinitions") == 0)
742 else if (strcmp (optarg, "nosymbolic") == 0)
744 else if (strcmp (optarg, "pure-text") == 0)
747 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
750 ldfile_add_arch (optarg);
753 lang_add_target (optarg);
756 ldfile_open_command_file (optarg);
757 parser_input = input_mri_script;
760 case OPTION_CALL_SHARED:
761 input_flags.dynamic = TRUE;
763 case OPTION_NON_SHARED:
764 input_flags.dynamic = FALSE;
767 command_line.cref = TRUE;
768 link_info.notice_all = TRUE;
771 command_line.force_common_definition = TRUE;
773 case OPTION_FORCE_GROUP_ALLOCATION:
774 command_line.force_group_allocation = TRUE;
778 lex_redirect (optarg, "--defsym", ++defsym_count);
779 parser_input = input_defsym;
783 case OPTION_DEMANGLE:
787 enum demangling_styles style;
789 style = cplus_demangle_name_to_style (optarg);
790 if (style == unknown_demangling)
791 einfo (_("%F%P: unknown demangling style `%s'\n"),
794 cplus_demangle_set_style (style);
797 case 'I': /* Used on Solaris. */
798 case OPTION_DYNAMIC_LINKER:
799 command_line.interpreter = optarg;
800 link_info.nointerp = 0;
802 case OPTION_NO_DYNAMIC_LINKER:
803 link_info.nointerp = 1;
806 /* Already handled in ldmain.c. */
809 command_line.endian = ENDIAN_BIG;
812 command_line.endian = ENDIAN_LITTLE;
814 case OPTION_EMBEDDED_RELOCS:
815 command_line.embedded_relocs = TRUE;
817 case OPTION_EXPORT_DYNAMIC:
818 case 'E': /* HP/UX compatibility. */
819 link_info.export_dynamic = TRUE;
821 case OPTION_NO_EXPORT_DYNAMIC:
822 link_info.export_dynamic = FALSE;
825 lang_add_entry (optarg, TRUE);
828 if (command_line.auxiliary_filters == NULL)
830 command_line.auxiliary_filters = (char **)
831 xmalloc (2 * sizeof (char *));
832 command_line.auxiliary_filters[0] = optarg;
833 command_line.auxiliary_filters[1] = NULL;
841 for (p = command_line.auxiliary_filters; *p != NULL; p++)
843 command_line.auxiliary_filters = (char **)
844 xrealloc (command_line.auxiliary_filters,
845 (c + 2) * sizeof (char *));
846 command_line.auxiliary_filters[c] = optarg;
847 command_line.auxiliary_filters[c + 1] = NULL;
851 command_line.filter_shlib = optarg;
853 case OPTION_FORCE_EXE_SUFFIX:
854 command_line.force_exe_suffix = TRUE;
859 g_switch_value = strtoul (optarg, &end, 0);
861 einfo (_("%P%F: invalid number `%s'\n"), optarg);
867 case OPTION_GC_SECTIONS:
868 link_info.gc_sections = TRUE;
870 case OPTION_PRINT_GC_SECTIONS:
871 link_info.print_gc_sections = TRUE;
873 case OPTION_GC_KEEP_EXPORTED:
874 link_info.gc_keep_exported = TRUE;
881 ldfile_add_library_path (optarg, TRUE);
884 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
887 config.map_filename = "-";
890 /* Ignore. Was handled in a pre-parse. */
893 config.map_filename = optarg;
896 config.text_read_only = FALSE;
897 config.magic_demand_paged = FALSE;
898 input_flags.dynamic = FALSE;
900 case OPTION_NO_OMAGIC:
901 config.text_read_only = TRUE;
902 config.magic_demand_paged = TRUE;
903 /* NB/ Does not set input_flags.dynamic to TRUE.
904 Use --call-shared or -Bdynamic for this. */
907 config.magic_demand_paged = FALSE;
908 input_flags.dynamic = FALSE;
910 case OPTION_NO_DEFINE_COMMON:
911 link_info.inhibit_common_definition = TRUE;
913 case OPTION_NO_DEMANGLE:
916 case OPTION_NO_GC_SECTIONS:
917 link_info.gc_sections = FALSE;
919 case OPTION_NO_PRINT_GC_SECTIONS:
920 link_info.print_gc_sections = FALSE;
922 case OPTION_NO_KEEP_MEMORY:
923 link_info.keep_memory = FALSE;
925 case OPTION_NO_UNDEFINED:
926 link_info.unresolved_syms_in_objects
927 = how_to_report_unresolved_symbols;
929 case OPTION_ALLOW_SHLIB_UNDEFINED:
930 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
932 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
933 link_info.unresolved_syms_in_shared_libs
934 = how_to_report_unresolved_symbols;
936 case OPTION_UNRESOLVED_SYMBOLS:
937 if (strcmp (optarg, "ignore-all") == 0)
939 link_info.unresolved_syms_in_objects = RM_IGNORE;
940 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
942 else if (strcmp (optarg, "report-all") == 0)
944 link_info.unresolved_syms_in_objects
945 = how_to_report_unresolved_symbols;
946 link_info.unresolved_syms_in_shared_libs
947 = how_to_report_unresolved_symbols;
949 else if (strcmp (optarg, "ignore-in-object-files") == 0)
951 link_info.unresolved_syms_in_objects = RM_IGNORE;
952 link_info.unresolved_syms_in_shared_libs
953 = how_to_report_unresolved_symbols;
955 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
957 link_info.unresolved_syms_in_objects
958 = how_to_report_unresolved_symbols;
959 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
962 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
964 case OPTION_WARN_UNRESOLVED_SYMBOLS:
965 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
966 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
967 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
968 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
969 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
972 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
973 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
974 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
975 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
976 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
977 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
979 case OPTION_ALLOW_MULTIPLE_DEFINITION:
980 link_info.allow_multiple_definition = TRUE;
982 case OPTION_NO_UNDEFINED_VERSION:
983 link_info.allow_undefined_version = FALSE;
985 case OPTION_DEFAULT_SYMVER:
986 link_info.create_default_symver = TRUE;
988 case OPTION_DEFAULT_IMPORTED_SYMVER:
989 link_info.default_imported_symver = TRUE;
991 case OPTION_NO_WARN_MISMATCH:
992 command_line.warn_mismatch = FALSE;
994 case OPTION_NO_WARN_SEARCH_MISMATCH:
995 command_line.warn_search_mismatch = FALSE;
997 case OPTION_NOINHIBIT_EXEC:
998 force_make_executable = TRUE;
1000 case OPTION_NOSTDLIB:
1001 config.only_cmd_line_lib_dirs = TRUE;
1003 case OPTION_NO_WHOLE_ARCHIVE:
1004 input_flags.whole_archive = FALSE;
1007 /* FIXME "-O<non-digits> <value>" used to set the address of
1008 section <non-digits>. Was this for compatibility with
1009 something, or can we create a new option to do that
1010 (with a syntax similar to -defsym)?
1011 getopt can't handle two args to an option without kludges. */
1013 /* Enable optimizations of output files. */
1014 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1017 lang_add_output (optarg, 0);
1019 case OPTION_OFORMAT:
1020 lang_add_output_format (optarg, NULL, NULL, 0);
1022 case OPTION_OUT_IMPLIB:
1023 command_line.out_implib_filename = xstrdup (optarg);
1025 case OPTION_PRINT_SYSROOT:
1030 case OPTION_PRINT_OUTPUT_FORMAT:
1031 command_line.print_output_format = TRUE;
1033 #ifdef ENABLE_PLUGINS
1035 plugin_opt_plugin (optarg);
1037 case OPTION_PLUGIN_OPT:
1038 if (plugin_opt_plugin_arg (optarg))
1039 einfo (_("%P%F: bad -plugin-opt option\n"));
1041 #endif /* ENABLE_PLUGINS */
1043 link_info.emitrelocations = TRUE;
1047 if (optind == last_optind)
1048 /* This can happen if the user put "-rpath,a" on the command
1049 line. (Or something similar. The comma is important).
1050 Getopt becomes confused and thinks that this is a -r option
1051 but it cannot parse the text after the -r so it refuses to
1052 increment the optind counter. Detect this case and issue
1053 an error message here. We cannot just make this a warning,
1054 increment optind, and continue because getopt is too confused
1055 and will seg-fault the next time around. */
1056 einfo(_("%P%F: unrecognised option: %s\n"), argv[optind]);
1058 if (bfd_link_pic (&link_info))
1059 einfo (_("%P%F: -r and %s may not be used together\n"),
1060 bfd_link_dll (&link_info) ? "-shared" : "-pie");
1062 link_info.type = type_relocatable;
1063 config.build_constructors = FALSE;
1064 config.magic_demand_paged = FALSE;
1065 config.text_read_only = FALSE;
1066 input_flags.dynamic = FALSE;
1069 /* The GNU linker traditionally uses -R to mean to include
1070 only the symbols from a file. The Solaris linker uses -R
1071 to set the path used by the runtime linker to find
1072 libraries. This is the GNU linker -rpath argument. We
1073 try to support both simultaneously by checking the file
1074 named. If it is a directory, rather than a regular file,
1075 we assume -rpath was meant. */
1079 if (stat (optarg, &s) >= 0
1080 && ! S_ISDIR (s.st_mode))
1082 lang_add_input_file (optarg,
1083 lang_input_file_is_symbols_only_enum,
1090 if (command_line.rpath == NULL)
1091 command_line.rpath = xstrdup (optarg);
1094 size_t rpath_len = strlen (command_line.rpath);
1095 size_t optarg_len = strlen (optarg);
1097 char *cp = command_line.rpath;
1099 /* First see whether OPTARG is already in the path. */
1102 if (strncmp (optarg, cp, optarg_len) == 0
1103 && (cp[optarg_len] == 0
1104 || cp[optarg_len] == config.rpath_separator))
1108 /* Not yet found. */
1109 cp = strchr (cp, config.rpath_separator);
1117 buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1118 sprintf (buf, "%s%c%s", command_line.rpath,
1119 config.rpath_separator, optarg);
1120 free (command_line.rpath);
1121 command_line.rpath = buf;
1125 case OPTION_RPATH_LINK:
1126 if (command_line.rpath_link == NULL)
1127 command_line.rpath_link = xstrdup (optarg);
1132 buf = (char *) xmalloc (strlen (command_line.rpath_link)
1135 sprintf (buf, "%s%c%s", command_line.rpath_link,
1136 config.rpath_separator, optarg);
1137 free (command_line.rpath_link);
1138 command_line.rpath_link = buf;
1141 case OPTION_NO_RELAX:
1147 case OPTION_RETAIN_SYMBOLS_FILE:
1148 add_keepsyms_file (optarg);
1151 link_info.strip = strip_debugger;
1154 link_info.strip = strip_all;
1156 case OPTION_STRIP_DISCARDED:
1157 link_info.strip_discarded = TRUE;
1159 case OPTION_NO_STRIP_DISCARDED:
1160 link_info.strip_discarded = FALSE;
1163 if (config.has_shared)
1165 if (bfd_link_relocatable (&link_info))
1166 einfo (_("%P%F: -r and -shared may not be used together\n"));
1168 link_info.type = type_dll;
1169 /* When creating a shared library, the default
1170 behaviour is to ignore any unresolved references. */
1171 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1172 link_info.unresolved_syms_in_objects = RM_IGNORE;
1173 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1174 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1177 einfo (_("%P%F: -shared not supported\n"));
1180 if (config.has_shared)
1182 if (bfd_link_relocatable (&link_info))
1183 einfo (_("%P%F: -r and -pie may not be used together\n"));
1185 link_info.type = type_pie;
1188 einfo (_("%P%F: -pie not supported\n"));
1190 case 'h': /* Used on Solaris. */
1192 if (optarg[0] == '\0' && command_line.soname
1193 && command_line.soname[0])
1194 einfo (_("%P: SONAME must not be empty string; keeping previous one\n"));
1196 command_line.soname = optarg;
1198 case OPTION_SORT_COMMON:
1200 || strcmp (optarg, N_("descending")) == 0)
1201 config.sort_common = sort_descending;
1202 else if (strcmp (optarg, N_("ascending")) == 0)
1203 config.sort_common = sort_ascending;
1205 einfo (_("%P%F: invalid common section sorting option: %s\n"),
1208 case OPTION_SORT_SECTION:
1209 if (strcmp (optarg, N_("name")) == 0)
1210 sort_section = by_name;
1211 else if (strcmp (optarg, N_("alignment")) == 0)
1212 sort_section = by_alignment;
1214 einfo (_("%P%F: invalid section sorting option: %s\n"),
1218 config.stats = TRUE;
1220 case OPTION_SYMBOLIC:
1221 command_line.symbolic = symbolic;
1223 case OPTION_SYMBOLIC_FUNCTIONS:
1224 command_line.symbolic = symbolic_functions;
1230 previous_script_handle = saved_script_handle;
1231 ldfile_open_command_file (optarg);
1232 parser_input = input_script;
1234 previous_script_handle = NULL;
1236 case OPTION_DEFAULT_SCRIPT:
1237 command_line.default_script = optarg;
1239 case OPTION_SECTION_START:
1245 /* Check for <something>=<somthing>... */
1246 optarg2 = strchr (optarg, '=');
1247 if (optarg2 == NULL)
1248 einfo (_("%P%F: invalid argument to option"
1249 " \"--section-start\"\n"));
1253 /* So far so good. Are all the args present? */
1254 if ((*optarg == '\0') || (*optarg2 == '\0'))
1255 einfo (_("%P%F: missing argument(s) to option"
1256 " \"--section-start\"\n"));
1258 /* We must copy the section name as set_section_start
1259 doesn't do it for us. */
1260 len = optarg2 - optarg;
1261 sec_name = (char *) xmalloc (len);
1262 memcpy (sec_name, optarg, len - 1);
1263 sec_name[len - 1] = 0;
1265 /* Then set it... */
1266 set_section_start (sec_name, optarg2);
1269 case OPTION_TARGET_HELP:
1270 /* Mention any target specific options. */
1271 ldemul_list_emulation_options (stdout);
1274 set_segment_start (".bss", optarg);
1277 set_segment_start (".data", optarg);
1280 set_segment_start (".text", optarg);
1282 case OPTION_TTEXT_SEGMENT:
1283 set_segment_start (".text-segment", optarg);
1285 case OPTION_TRODATA_SEGMENT:
1286 set_segment_start (".rodata-segment", optarg);
1288 case OPTION_TLDATA_SEGMENT:
1289 set_segment_start (".ldata-segment", optarg);
1291 case OPTION_TRADITIONAL_FORMAT:
1292 link_info.traditional_format = TRUE;
1294 case OPTION_TASK_LINK:
1295 link_info.task_link = TRUE;
1298 if (bfd_link_pic (&link_info))
1299 einfo (_("%P%F: -r and %s may not be used together\n"),
1300 bfd_link_dll (&link_info) ? "-shared" : "-pie");
1302 link_info.type = type_relocatable;
1303 config.build_constructors = TRUE;
1304 config.magic_demand_paged = FALSE;
1305 config.text_read_only = FALSE;
1306 input_flags.dynamic = FALSE;
1309 ldlang_add_undef (optarg, TRUE);
1311 case OPTION_REQUIRE_DEFINED_SYMBOL:
1312 ldlang_add_require_defined (optarg);
1316 lang_add_unique (optarg);
1318 config.unique_orphan_sections = TRUE;
1320 case OPTION_VERBOSE:
1322 version_printed = TRUE;
1324 overflow_cutoff_limit = -2;
1328 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1330 einfo (_("%P%F: invalid number `%s'\n"), optarg);
1331 #ifdef ENABLE_PLUGINS
1332 report_plugin_symbols = level > 1;
1333 #endif /* ENABLE_PLUGINS */
1338 version_printed = TRUE;
1342 version_printed = TRUE;
1344 case OPTION_VERSION:
1348 case OPTION_VERSION_SCRIPT:
1349 /* This option indicates a small script that only specifies
1350 version information. Read it, but don't assume that
1351 we've seen a linker script. */
1353 FILE *hold_script_handle;
1355 hold_script_handle = saved_script_handle;
1356 ldfile_open_command_file (optarg);
1357 saved_script_handle = hold_script_handle;
1358 parser_input = input_version_script;
1362 case OPTION_VERSION_EXPORTS_SECTION:
1363 /* This option records a version symbol to be applied to the
1364 symbols listed for export to be found in the object files
1365 .exports sections. */
1366 command_line.version_exports_section = optarg;
1368 case OPTION_DYNAMIC_LIST_DATA:
1369 command_line.dynamic_list = dynamic_list_data;
1370 if (command_line.symbolic == symbolic)
1371 command_line.symbolic = symbolic_unset;
1373 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1374 lang_append_dynamic_list_cpp_typeinfo ();
1375 if (command_line.dynamic_list != dynamic_list_data)
1376 command_line.dynamic_list = dynamic_list;
1377 if (command_line.symbolic == symbolic)
1378 command_line.symbolic = symbolic_unset;
1380 case OPTION_DYNAMIC_LIST_CPP_NEW:
1381 lang_append_dynamic_list_cpp_new ();
1382 if (command_line.dynamic_list != dynamic_list_data)
1383 command_line.dynamic_list = dynamic_list;
1384 if (command_line.symbolic == symbolic)
1385 command_line.symbolic = symbolic_unset;
1387 case OPTION_DYNAMIC_LIST:
1388 /* This option indicates a small script that only specifies
1389 a dynamic list. Read it, but don't assume that we've
1390 seen a linker script. */
1392 FILE *hold_script_handle;
1394 hold_script_handle = saved_script_handle;
1395 ldfile_open_command_file (optarg);
1396 saved_script_handle = hold_script_handle;
1397 parser_input = input_dynamic_list;
1400 if (command_line.dynamic_list != dynamic_list_data)
1401 command_line.dynamic_list = dynamic_list;
1402 if (command_line.symbolic == symbolic)
1403 command_line.symbolic = symbolic_unset;
1405 case OPTION_WARN_COMMON:
1406 config.warn_common = TRUE;
1408 case OPTION_WARN_CONSTRUCTORS:
1409 config.warn_constructors = TRUE;
1411 case OPTION_WARN_FATAL:
1412 config.fatal_warnings = TRUE;
1414 case OPTION_NO_WARN_FATAL:
1415 config.fatal_warnings = FALSE;
1417 case OPTION_WARN_MULTIPLE_GP:
1418 config.warn_multiple_gp = TRUE;
1420 case OPTION_WARN_ONCE:
1421 config.warn_once = TRUE;
1423 case OPTION_WARN_SECTION_ALIGN:
1424 config.warn_section_align = TRUE;
1426 case OPTION_WARN_SHARED_TEXTREL:
1427 link_info.warn_shared_textrel = TRUE;
1429 case OPTION_WARN_ALTERNATE_EM:
1430 link_info.warn_alternate_em = TRUE;
1432 case OPTION_WHOLE_ARCHIVE:
1433 input_flags.whole_archive = TRUE;
1435 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1436 input_flags.add_DT_NEEDED_for_dynamic = TRUE;
1438 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1439 input_flags.add_DT_NEEDED_for_dynamic = FALSE;
1441 case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1442 input_flags.add_DT_NEEDED_for_regular = TRUE;
1444 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1445 input_flags.add_DT_NEEDED_for_regular = FALSE;
1450 case OPTION_IGNORE_UNRESOLVED_SYMBOL:
1451 add_ignoresym (&link_info, optarg);
1453 case OPTION_DISCARD_NONE:
1454 link_info.discard = discard_none;
1457 link_info.discard = discard_l;
1460 link_info.discard = discard_all;
1463 if (CONST_STRNEQ (optarg, "P,"))
1465 if (default_dirlist != NULL)
1466 free (default_dirlist);
1467 default_dirlist = xstrdup (optarg);
1472 case OPTION_SPARE_DYNAMIC_TAGS:
1473 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1475 case OPTION_SPLIT_BY_RELOC:
1477 config.split_by_reloc = strtoul (optarg, NULL, 0);
1479 config.split_by_reloc = 32768;
1481 case OPTION_SPLIT_BY_FILE:
1483 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1485 config.split_by_file = 1;
1487 case OPTION_CHECK_SECTIONS:
1488 command_line.check_section_addresses = 1;
1490 case OPTION_NO_CHECK_SECTIONS:
1491 command_line.check_section_addresses = 0;
1493 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1494 command_line.accept_unknown_input_arch = TRUE;
1496 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1497 command_line.accept_unknown_input_arch = FALSE;
1500 lang_enter_group ();
1505 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1507 lang_leave_group ();
1512 link_info.init_function = optarg;
1516 link_info.fini_function = optarg;
1519 case OPTION_REDUCE_MEMORY_OVERHEADS:
1520 link_info.reduce_memory_overheads = TRUE;
1521 if (config.hash_table_size == 0)
1522 config.hash_table_size = 1021;
1525 case OPTION_HASH_SIZE:
1527 bfd_size_type new_size;
1529 new_size = strtoul (optarg, NULL, 0);
1531 config.hash_table_size = new_size;
1533 einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1537 case OPTION_PUSH_STATE:
1538 input_flags.pushed = xmemdup (&input_flags,
1539 sizeof (input_flags),
1540 sizeof (input_flags));
1543 case OPTION_POP_STATE:
1544 if (input_flags.pushed == NULL)
1545 einfo (_("%P%F: no state pushed before popping\n"));
1548 struct lang_input_statement_flags *oldp = input_flags.pushed;
1549 memcpy (&input_flags, oldp, sizeof (input_flags));
1554 case OPTION_PRINT_MEMORY_USAGE:
1555 command_line.print_memory_usage = TRUE;
1558 case OPTION_ORPHAN_HANDLING:
1559 if (strcasecmp (optarg, "place") == 0)
1560 config.orphan_handling = orphan_handling_place;
1561 else if (strcasecmp (optarg, "warn") == 0)
1562 config.orphan_handling = orphan_handling_warn;
1563 else if (strcasecmp (optarg, "error") == 0)
1564 config.orphan_handling = orphan_handling_error;
1565 else if (strcasecmp (optarg, "discard") == 0)
1566 config.orphan_handling = orphan_handling_discard;
1568 einfo (_("%P%F: invalid argument to option"
1569 " \"--orphan-handling\"\n"));
1574 if (command_line.soname && command_line.soname[0] == '\0')
1576 einfo (_("%P: SONAME must not be empty string; ignored\n"));
1577 command_line.soname = NULL;
1582 lang_leave_group ();
1586 if (default_dirlist != NULL)
1588 set_default_dirlist (default_dirlist);
1589 free (default_dirlist);
1592 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1593 /* FIXME: Should we allow emulations a chance to set this ? */
1594 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1596 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1597 /* FIXME: Should we allow emulations a chance to set this ? */
1598 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1600 if (bfd_link_relocatable (&link_info)
1601 && command_line.check_section_addresses < 0)
1602 command_line.check_section_addresses = 0;
1604 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
1605 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
1606 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are
1607 for PIC outputs. -Bsymbolic overrides all others and vice versa. */
1608 switch (command_line.symbolic)
1610 case symbolic_unset:
1613 /* -Bsymbolic is for PIC output only. */
1614 if (bfd_link_pic (&link_info))
1616 link_info.symbolic = TRUE;
1617 /* Should we free the unused memory? */
1618 link_info.dynamic_list = NULL;
1619 command_line.dynamic_list = dynamic_list_unset;
1622 case symbolic_functions:
1623 /* -Bsymbolic-functions is for PIC output only. */
1624 if (bfd_link_pic (&link_info))
1625 command_line.dynamic_list = dynamic_list_data;
1629 switch (command_line.dynamic_list)
1631 case dynamic_list_unset:
1633 case dynamic_list_data:
1634 link_info.dynamic_data = TRUE;
1637 link_info.dynamic = TRUE;
1641 if (!bfd_link_dll (&link_info))
1643 if (command_line.filter_shlib)
1644 einfo (_("%P%F: -F may not be used without -shared\n"));
1645 if (command_line.auxiliary_filters)
1646 einfo (_("%P%F: -f may not be used without -shared\n"));
1649 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
1650 don't see how else this can be handled, since in this case we
1651 must preserve all externally visible symbols. */
1652 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all)
1654 link_info.strip = strip_debugger;
1655 if (link_info.discard == discard_sec_merge)
1656 link_info.discard = discard_all;
1660 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1661 library search path. */
1664 set_default_dirlist (char *dirlist_ptr)
1670 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1673 if (*dirlist_ptr != '\0')
1674 ldfile_add_library_path (dirlist_ptr, TRUE);
1677 dirlist_ptr = p + 1;
1682 set_section_start (char *sect, char *valstr)
1685 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1687 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1688 lang_section_start (sect, exp_intop (val), NULL);
1692 set_segment_start (const char *section, char *valstr)
1698 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1700 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1701 /* If we already have an entry for this segment, update the existing
1704 for (seg = segments; seg; seg = seg->next)
1705 if (strcmp (seg->name, name) == 0)
1708 lang_section_start (section, exp_intop (val), seg);
1711 /* There was no existing value so we must create a new segment
1713 seg = (segment_type *) stat_alloc (sizeof (*seg));
1717 /* Add it to the linked list of segments. */
1718 seg->next = segments;
1720 /* Historically, -Ttext and friends set the base address of a
1721 particular section. For backwards compatibility, we still do
1722 that. If a SEGMENT_START directive is seen, the section address
1723 assignment will be disabled. */
1724 lang_section_start (section, exp_intop (val), seg);
1728 elf_shlib_list_options (FILE *file)
1731 --audit=AUDITLIB Specify a library to use for auditing\n"));
1733 -Bgroup Selects group name lookup rules for DSO\n"));
1735 --disable-new-dtags Disable new dynamic tags\n"));
1737 --enable-new-dtags Enable new dynamic tags\n"));
1739 --eh-frame-hdr Create .eh_frame_hdr section\n"));
1741 --no-eh-frame-hdr Do not create .eh_frame_hdr section\n"));
1743 --exclude-libs=LIBS Make all symbols in LIBS hidden\n"));
1745 --hash-style=STYLE Set hash style to sysv, gnu or both\n"));
1747 -P AUDITLIB, --depaudit=AUDITLIB\n" "\
1748 Specify a library to use for auditing dependencies\n"));
1750 -z combreloc Merge dynamic relocs into one section and sort\n"));
1752 -z nocombreloc Don't merge dynamic relocs into one section\n"));
1754 -z global Make symbols in DSO available for subsequently\n\
1755 loaded objects\n"));
1757 -z initfirst Mark DSO to be initialized first at runtime\n"));
1759 -z interpose Mark object to interpose all DSOs but executable\n"));
1761 -z lazy Mark object lazy runtime binding (default)\n"));
1763 -z loadfltr Mark object requiring immediate process\n"));
1765 -z nocopyreloc Don't create copy relocs\n"));
1767 -z nodefaultlib Mark object not to use default search paths\n"));
1769 -z nodelete Mark DSO non-deletable at runtime\n"));
1771 -z nodlopen Mark DSO not available to dlopen\n"));
1773 -z nodump Mark DSO not available to dldump\n"));
1775 -z now Mark object non-lazy runtime binding\n"));
1777 -z origin Mark object requiring immediate $ORIGIN\n\
1778 processing at runtime\n"));
1779 #if DEFAULT_LD_Z_RELRO
1781 -z relro Create RELRO program header (default)\n"));
1783 -z norelro Don't create RELRO program header\n"));
1786 -z relro Create RELRO program header\n"));
1788 -z norelro Don't create RELRO program header (default)\n"));
1791 -z common Generate common symbols with STT_COMMON type\n"));
1793 -z nocommon Generate common symbols with STT_OBJECT type\n"));
1795 -z stack-size=SIZE Set size of stack segment\n"));
1797 -z text Treat DT_TEXTREL in shared object as error\n"));
1799 -z notext Don't treat DT_TEXTREL in shared object as error\n"));
1801 -z textoff Don't treat DT_TEXTREL in shared object as error\n"));
1805 elf_static_list_options (FILE *file)
1808 --build-id[=STYLE] Generate build ID note\n"));
1810 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\
1811 Compress DWARF debug sections using zlib\n"));
1812 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG
1814 Default: zlib-gabi\n"));
1820 -z common-page-size=SIZE Set common page size to SIZE\n"));
1822 -z max-page-size=SIZE Set maximum page size to SIZE\n"));
1824 -z defs Report unresolved symbols in object files.\n"));
1826 -z muldefs Allow multiple definitions\n"));
1828 -z execstack Mark executable as requiring executable stack\n"));
1830 -z noexecstack Mark executable as not requiring executable stack\n"));
1832 -z globalaudit Mark executable requiring global auditing\n"));
1836 elf_plt_unwind_list_options (FILE *file)
1839 --ld-generated-unwind-info Generate exception handling info for PLT\n\
1840 --no-ld-generated-unwind-info\n\
1841 Don't generate exception handling info for PLT\n"));
1845 ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib,
1846 bfd_boolean plt_unwind)
1850 printf (_("ELF emulations:\n"));
1852 elf_plt_unwind_list_options (file);
1853 elf_static_list_options (file);
1855 elf_shlib_list_options (file);
1859 /* Print help messages for the options. */
1865 const char **targets, **pp;
1868 printf (_("Usage: %s [options] file...\n"), program_name);
1870 printf (_("Options:\n"));
1871 for (i = 0; i < OPTION_COUNT; i++)
1873 if (ld_options[i].doc != NULL)
1886 if (ld_options[j].shortopt != '\0'
1887 && ld_options[j].control != NO_HELP)
1889 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1890 len += (comma ? 2 : 0) + 2;
1891 if (ld_options[j].arg != NULL)
1893 if (ld_options[j].opt.has_arg != optional_argument)
1898 printf ("%s", _(ld_options[j].arg));
1899 len += strlen (_(ld_options[j].arg));
1905 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1910 if (ld_options[j].opt.name != NULL
1911 && ld_options[j].control != NO_HELP)
1914 (ld_options[j].control == TWO_DASHES
1915 || ld_options[j].control == EXACTLY_TWO_DASHES);
1919 two_dashes ? "-" : "",
1920 ld_options[j].opt.name);
1921 len += ((comma ? 2 : 0)
1923 + (two_dashes ? 1 : 0)
1924 + strlen (ld_options[j].opt.name));
1925 if (ld_options[j].arg != NULL)
1927 printf (" %s", _(ld_options[j].arg));
1928 len += 1 + strlen (_(ld_options[j].arg));
1934 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1942 for (; len < 30; len++)
1945 printf ("%s\n", _(ld_options[i].doc));
1948 printf (_(" @FILE"));
1949 for (len = strlen (" @FILE"); len < 30; len++)
1951 printf (_("Read options from FILE\n"));
1953 /* Note: Various tools (such as libtool) depend upon the
1954 format of the listings below - do not change them. */
1955 /* xgettext:c-format */
1956 printf (_("%s: supported targets:"), program_name);
1957 targets = bfd_target_list ();
1958 for (pp = targets; *pp != NULL; pp++)
1959 printf (" %s", *pp);
1963 /* xgettext:c-format */
1964 printf (_("%s: supported emulations: "), program_name);
1965 ldemul_list_emulations (stdout);
1968 /* xgettext:c-format */
1969 printf (_("%s: emulation specific options:\n"), program_name);
1970 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS,
1971 ELF_PLT_UNWIND_LIST_OPTIONS);
1972 ldemul_list_emulation_options (stdout);
1975 if (REPORT_BUGS_TO[0])
1976 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);