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 { {"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 { {"no-dynamic-linker", no_argument, NULL, OPTION_NO_DYNAMIC_LINKER},
142 '\0', NULL, N_("Produce an executable with no program interpreter header"),
144 { {"library", required_argument, NULL, 'l'},
145 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
146 { {"library-path", required_argument, NULL, 'L'},
147 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
149 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
150 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
151 { {NULL, required_argument, NULL, '\0'},
152 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
153 { {"print-map", no_argument, NULL, 'M'},
154 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
155 { {"nmagic", no_argument, NULL, 'n'},
156 'n', NULL, N_("Do not page align data"), TWO_DASHES },
157 { {"omagic", no_argument, NULL, 'N'},
158 'N', NULL, N_("Do not page align data, do not make text readonly"),
159 EXACTLY_TWO_DASHES },
160 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
161 '\0', NULL, N_("Page align data, make text readonly"),
162 EXACTLY_TWO_DASHES },
163 { {"output", required_argument, NULL, 'o'},
164 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
165 { {NULL, required_argument, NULL, '\0'},
166 'O', NULL, N_("Optimize output file"), ONE_DASH },
167 { {"out-implib", required_argument, NULL, OPTION_OUT_IMPLIB},
168 '\0', N_("FILE"), N_("Generate import library"), TWO_DASHES },
169 #ifdef ENABLE_PLUGINS
170 { {"plugin", required_argument, NULL, OPTION_PLUGIN},
171 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
172 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
173 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
174 { {"flto", optional_argument, NULL, OPTION_IGNORE},
175 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
177 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
178 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
180 #endif /* ENABLE_PLUGINS */
181 { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE},
182 '\0', NULL, N_("Ignored for GCC linker option compatibility"),
184 { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE},
185 '\0', NULL, N_("Ignored for gold option compatibility"),
187 { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE},
188 '\0', NULL, N_("Ignored for gold option compatibility"),
190 { {"Qy", no_argument, NULL, OPTION_IGNORE},
191 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
192 { {"emit-relocs", no_argument, NULL, 'q'},
193 'q', NULL, "Generate relocations in final output", TWO_DASHES },
194 { {"relocatable", no_argument, NULL, 'r'},
195 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
196 { {NULL, no_argument, NULL, '\0'},
197 'i', NULL, NULL, ONE_DASH },
198 { {"just-symbols", required_argument, NULL, 'R'},
199 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
201 { {"strip-all", no_argument, NULL, 's'},
202 's', NULL, N_("Strip all symbols"), TWO_DASHES },
203 { {"strip-debug", no_argument, NULL, 'S'},
204 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
205 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
206 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
207 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
208 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
209 { {"trace", no_argument, NULL, 't'},
210 't', NULL, N_("Trace file opens"), TWO_DASHES },
211 { {"script", required_argument, NULL, 'T'},
212 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
213 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
214 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
215 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
216 '\0', NULL, NULL, ONE_DASH },
217 { {"undefined", required_argument, NULL, 'u'},
218 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
220 { {"require-defined", required_argument, NULL, OPTION_REQUIRE_DEFINED_SYMBOL},
221 '\0', N_("SYMBOL"), N_("Require SYMBOL be defined in the final output"),
223 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
224 '\0', N_("[=SECTION]"),
225 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
226 { {"Ur", no_argument, NULL, OPTION_UR},
227 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
228 { {"version", no_argument, NULL, OPTION_VERSION},
229 'v', NULL, N_("Print version information"), TWO_DASHES },
230 { {NULL, no_argument, NULL, '\0'},
231 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
232 { {"discard-all", no_argument, NULL, 'x'},
233 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
234 { {"discard-locals", no_argument, NULL, 'X'},
235 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
236 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
237 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
238 { {"trace-symbol", required_argument, NULL, 'y'},
239 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
240 { {NULL, required_argument, NULL, '\0'},
241 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
243 { {"start-group", no_argument, NULL, '('},
244 '(', NULL, N_("Start a group"), TWO_DASHES },
245 { {"end-group", no_argument, NULL, ')'},
246 ')', NULL, N_("End a group"), TWO_DASHES },
247 { {"accept-unknown-input-arch", no_argument, NULL,
248 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
250 N_("Accept input files whose architecture cannot be determined"),
252 { {"no-accept-unknown-input-arch", no_argument, NULL,
253 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
254 '\0', NULL, N_("Reject input files whose architecture is unknown"),
257 /* The next two options are deprecated because of their similarity to
258 --as-needed and --no-as-needed. They have been replaced by
259 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */
260 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
261 '\0', NULL, NULL, NO_HELP },
262 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
263 '\0', NULL, NULL, NO_HELP },
265 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
266 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
268 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
269 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
270 " the command line"),
272 { {"assert", required_argument, NULL, OPTION_ASSERT},
273 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
274 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
275 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
276 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
277 '\0', NULL, NULL, ONE_DASH },
278 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
279 '\0', NULL, NULL, ONE_DASH },
280 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
281 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
282 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
283 '\0', NULL, NULL, ONE_DASH },
284 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
285 '\0', NULL, NULL, ONE_DASH },
286 { {"static", no_argument, NULL, OPTION_NON_SHARED},
287 '\0', NULL, NULL, ONE_DASH },
288 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
289 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
290 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
291 '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
292 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
293 '\0', NULL, N_("Check section addresses for overlaps (default)"),
295 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
296 '\0', NULL, N_("Do not check section addresses for overlaps"),
298 { {"copy-dt-needed-entries", no_argument, NULL,
299 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
300 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
302 { {"no-copy-dt-needed-entries", no_argument, NULL,
303 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
304 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
307 { {"cref", no_argument, NULL, OPTION_CREF},
308 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
309 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
310 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
311 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
312 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
314 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
315 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
316 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
317 '\0', NULL, N_("Treat warnings as errors"),
319 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
320 '\0', NULL, N_("Do not treat warnings as errors (default)"),
322 { {"fini", required_argument, NULL, OPTION_FINI},
323 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
324 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
325 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
326 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
327 '\0', NULL, N_("Remove unused sections (on some targets)"),
329 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
330 '\0', NULL, N_("Don't remove unused sections (default)"),
332 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
333 '\0', NULL, N_("List removed unused sections on stderr"),
335 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
336 '\0', NULL, N_("Do not list removed unused sections"),
338 { {"gc-keep-exported", no_argument, NULL, OPTION_GC_KEEP_EXPORTED},
339 '\0', NULL, N_("Keep exported symbols when removing unused sections"),
341 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
342 '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
344 { {"help", no_argument, NULL, OPTION_HELP},
345 '\0', NULL, N_("Print option help"), TWO_DASHES },
346 { {"init", required_argument, NULL, OPTION_INIT},
347 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
348 { {"Map", required_argument, NULL, OPTION_MAP},
349 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
350 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
351 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
352 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
353 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
354 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
355 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
356 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
357 '\0', NULL, N_("Do not allow unresolved references in object files"),
359 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
360 '\0', NULL, N_("Allow unresolved references in shared libraries"),
362 { {"no-allow-shlib-undefined", no_argument, NULL,
363 OPTION_NO_ALLOW_SHLIB_UNDEFINED},
364 '\0', NULL, N_("Do not allow unresolved references in shared libs"),
366 { {"allow-multiple-definition", no_argument, NULL,
367 OPTION_ALLOW_MULTIPLE_DEFINITION},
368 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
369 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
370 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
371 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
372 '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
373 { {"default-imported-symver", no_argument, NULL,
374 OPTION_DEFAULT_IMPORTED_SYMVER},
375 '\0', NULL, N_("Create default symbol version for imported symbols"),
377 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
378 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
379 { {"no-warn-search-mismatch", no_argument, NULL,
380 OPTION_NO_WARN_SEARCH_MISMATCH},
381 '\0', NULL, N_("Don't warn on finding an incompatible library"),
383 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
384 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
385 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
386 '\0', NULL, N_("Create an output file even if errors occur"),
388 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
389 '\0', NULL, NULL, NO_HELP },
390 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
391 '\0', NULL, N_("Only use library directories specified on\n"
392 " the command line"),
394 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
395 '\0', N_("TARGET"), N_("Specify target of output file"),
396 EXACTLY_TWO_DASHES },
397 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT},
398 '\0', NULL, N_("Print default output format"), TWO_DASHES },
399 { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT},
400 '\0', NULL, N_("Print current sysroot"), TWO_DASHES },
401 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
402 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
403 { {"reduce-memory-overheads", no_argument, NULL,
404 OPTION_REDUCE_MEMORY_OVERHEADS},
405 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
407 { {"relax", no_argument, NULL, OPTION_RELAX},
408 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
409 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
410 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
411 { {"retain-symbols-file", required_argument, NULL,
412 OPTION_RETAIN_SYMBOLS_FILE},
413 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
414 { {"rpath", required_argument, NULL, OPTION_RPATH},
415 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
416 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
417 '\0', N_("PATH"), N_("Set link time shared library search path"),
419 { {"shared", no_argument, NULL, OPTION_SHARED},
420 '\0', NULL, N_("Create a shared library"), ONE_DASH },
421 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
422 '\0', NULL, NULL, ONE_DASH },
423 { {"pie", no_argument, NULL, OPTION_PIE},
424 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
425 { {"pic-executable", no_argument, NULL, OPTION_PIE},
426 '\0', NULL, NULL, TWO_DASHES },
427 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
428 '\0', N_("[=ascending|descending]"),
429 N_("Sort common symbols by alignment [in specified order]"),
431 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
432 '\0', NULL, NULL, NO_HELP },
433 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
434 '\0', N_("name|alignment"),
435 N_("Sort sections by name or maximum alignment"), TWO_DASHES },
436 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
437 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
439 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
440 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
442 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
443 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
445 { {"stats", no_argument, NULL, OPTION_STATS},
446 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
447 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
448 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
449 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
450 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
451 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
452 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
453 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
454 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
456 { {"Tbss", required_argument, NULL, OPTION_TBSS},
457 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
458 { {"Tdata", required_argument, NULL, OPTION_TDATA},
459 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
460 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
461 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
462 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
463 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
464 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT},
465 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH },
466 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT},
467 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH },
468 { {"unresolved-symbols=<method>", required_argument, NULL,
469 OPTION_UNRESOLVED_SYMBOLS},
470 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
471 " ignore-all, report-all, ignore-in-object-files,\n"
472 " ignore-in-shared-libs"),
474 { {"verbose", optional_argument, NULL, OPTION_VERBOSE},
475 '\0', N_("[=NUMBER]"),
476 N_("Output lots of information during link"), TWO_DASHES },
477 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
478 '\0', NULL, NULL, NO_HELP },
479 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
480 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
481 { {"version-exports-section", required_argument, NULL,
482 OPTION_VERSION_EXPORTS_SECTION },
483 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
484 " SYMBOL as the version."),
486 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
487 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
488 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
489 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
490 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
491 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
492 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
493 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
494 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
495 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
496 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
497 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
499 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
500 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
501 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
502 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
503 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
504 '\0', NULL, N_("Warn if start of section changes due to alignment"),
506 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
507 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
509 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
510 '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
512 { {"warn-unresolved-symbols", no_argument, NULL,
513 OPTION_WARN_UNRESOLVED_SYMBOLS},
514 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
515 { {"error-unresolved-symbols", no_argument, NULL,
516 OPTION_ERROR_UNRESOLVED_SYMBOLS},
517 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
518 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
519 '\0', NULL, N_("Include all objects from following archives"),
521 { {"wrap", required_argument, NULL, OPTION_WRAP},
522 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
523 { {"ignore-unresolved-symbol", required_argument, NULL,
524 OPTION_IGNORE_UNRESOLVED_SYMBOL},
526 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES },
527 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE},
528 '\0', NULL, N_("Push state of flags governing input file handling"),
530 { {"pop-state", no_argument, NULL, OPTION_POP_STATE},
531 '\0', NULL, N_("Pop state of flags governing input file handling"),
533 { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE},
534 '\0', NULL, N_("Report target memory usage"), TWO_DASHES },
535 { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING},
536 '\0', N_("=MODE"), N_("Control how orphan sections are handled."),
540 #define OPTION_COUNT ARRAY_SIZE (ld_options)
543 parse_args (unsigned argc, char **argv)
548 char *default_dirlist = NULL;
550 struct option *longopts;
551 struct option *really_longopts;
553 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
555 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
556 longopts = (struct option *)
557 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
558 really_longopts = (struct option *)
559 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
561 /* Starting the short option string with '-' is for programs that
562 expect options and other ARGV-elements in any order and that care about
563 the ordering of the two. We describe each non-option ARGV-element
564 as if it were the argument of an option with character code 1. */
569 for (i = 0; i < OPTION_COUNT; i++)
571 if (ld_options[i].shortopt != '\0')
573 shortopts[is] = ld_options[i].shortopt;
575 if (ld_options[i].opt.has_arg == required_argument
576 || ld_options[i].opt.has_arg == optional_argument)
580 if (ld_options[i].opt.has_arg == optional_argument)
587 if (ld_options[i].opt.name != NULL)
589 if (ld_options[i].control == EXACTLY_TWO_DASHES)
591 really_longopts[irl] = ld_options[i].opt;
596 longopts[il] = ld_options[i].opt;
601 shortopts[is] = '\0';
602 longopts[il].name = NULL;
603 really_longopts[irl].name = NULL;
605 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
607 /* The -G option is ambiguous on different platforms. Sometimes it
608 specifies the largest data size to put into the small data
609 section. Sometimes it is equivalent to --shared. Unfortunately,
610 the first form takes an argument, while the second does not.
612 We need to permit the --shared form because on some platforms,
613 such as Solaris, gcc -shared will pass -G to the linker.
615 To permit either usage, we look through the argument list. If we
616 find -G not followed by a number, we change it into --shared.
617 This will work for most normal cases. */
618 for (i = 1; i < argc; i++)
619 if (strcmp (argv[i], "-G") == 0
621 || ! ISDIGIT (argv[i + 1][0])))
622 argv[i] = (char *) "--shared";
624 /* Because we permit long options to start with a single dash, and
625 we have a --library option, and the -l option is conventionally
626 used with an immediately following argument, we can have bad
627 results if somebody tries to use -l with a library whose name
628 happens to start with "ibrary", as in -li. We avoid problems by
629 simply turning -l into --library. This means that users will
630 have to use two dashes in order to use --library, which is OK
631 since that's how it is documented.
633 FIXME: It's possible that this problem can arise for other short
634 options as well, although the user does always have the recourse
635 of adding a space between the option and the argument. */
636 for (i = 1; i < argc; i++)
638 if (argv[i][0] == '-'
640 && argv[i][2] != '\0')
644 n = (char *) xmalloc (strlen (argv[i]) + 20);
645 sprintf (n, "--library=%s", argv[i] + 2);
655 static unsigned int defsym_count;
657 /* Using last_optind lets us avoid calling ldemul_parse_args
658 multiple times on a single option, which would lead to
659 confusion in the internal static variables maintained by
660 getopt. This could otherwise happen for an argument like
661 -nx, in which the -n is parsed as a single option, and we
662 loop around to pick up the -x. */
663 if (optind != last_optind)
664 if (ldemul_parse_args (argc, argv))
667 /* getopt_long_only is like getopt_long, but '-' as well as '--'
668 can indicate a long option. */
670 last_optind = optind;
671 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
674 optind = last_optind;
675 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
678 if (ldemul_handle_option (optc))
688 /* If the last word on the command line is an option that
689 requires an argument, getopt will refuse to recognise it.
690 Try to catch such options here and issue a more helpful
691 error message than just "unrecognized option". */
694 for (opt = ARRAY_SIZE (ld_options); opt--;)
695 if (ld_options[opt].opt.has_arg == required_argument
696 /* FIXME: There are a few short options that do not
697 have long equivalents, but which require arguments.
698 We should handle them too. */
699 && ld_options[opt].opt.name != NULL
700 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0)
702 einfo (_("%P: %s: missing argument\n"), argv[last_optind]);
707 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
712 einfo (_("%P%F: use the --help option for usage information\n"));
715 case 1: /* File name. */
716 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
722 /* For HP/UX compatibility. Actually -a shared should mean
723 ``use only shared libraries'' but, then, we don't
724 currently support shared libraries on HP/UX anyhow. */
725 if (strcmp (optarg, "archive") == 0)
726 input_flags.dynamic = FALSE;
727 else if (strcmp (optarg, "shared") == 0
728 || strcmp (optarg, "default") == 0)
729 input_flags.dynamic = TRUE;
731 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
734 /* FIXME: We just ignore these, but we should handle them. */
735 if (strcmp (optarg, "definitions") == 0)
737 else if (strcmp (optarg, "nodefinitions") == 0)
739 else if (strcmp (optarg, "nosymbolic") == 0)
741 else if (strcmp (optarg, "pure-text") == 0)
744 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
747 ldfile_add_arch (optarg);
750 lang_add_target (optarg);
753 ldfile_open_command_file (optarg);
754 parser_input = input_mri_script;
757 case OPTION_CALL_SHARED:
758 input_flags.dynamic = TRUE;
760 case OPTION_NON_SHARED:
761 input_flags.dynamic = FALSE;
764 command_line.cref = TRUE;
765 link_info.notice_all = TRUE;
768 command_line.force_common_definition = TRUE;
772 lex_redirect (optarg, "--defsym", ++defsym_count);
773 parser_input = input_defsym;
777 case OPTION_DEMANGLE:
781 enum demangling_styles style;
783 style = cplus_demangle_name_to_style (optarg);
784 if (style == unknown_demangling)
785 einfo (_("%F%P: unknown demangling style `%s'\n"),
788 cplus_demangle_set_style (style);
791 case 'I': /* Used on Solaris. */
792 case OPTION_DYNAMIC_LINKER:
793 command_line.interpreter = optarg;
794 link_info.nointerp = 0;
796 case OPTION_NO_DYNAMIC_LINKER:
797 link_info.nointerp = 1;
800 /* Already handled in ldmain.c. */
803 command_line.endian = ENDIAN_BIG;
806 command_line.endian = ENDIAN_LITTLE;
808 case OPTION_EMBEDDED_RELOCS:
809 command_line.embedded_relocs = TRUE;
811 case OPTION_EXPORT_DYNAMIC:
812 case 'E': /* HP/UX compatibility. */
813 link_info.export_dynamic = TRUE;
815 case OPTION_NO_EXPORT_DYNAMIC:
816 link_info.export_dynamic = FALSE;
819 lang_add_entry (optarg, TRUE);
822 if (command_line.auxiliary_filters == NULL)
824 command_line.auxiliary_filters = (char **)
825 xmalloc (2 * sizeof (char *));
826 command_line.auxiliary_filters[0] = optarg;
827 command_line.auxiliary_filters[1] = NULL;
835 for (p = command_line.auxiliary_filters; *p != NULL; p++)
837 command_line.auxiliary_filters = (char **)
838 xrealloc (command_line.auxiliary_filters,
839 (c + 2) * sizeof (char *));
840 command_line.auxiliary_filters[c] = optarg;
841 command_line.auxiliary_filters[c + 1] = NULL;
845 command_line.filter_shlib = optarg;
847 case OPTION_FORCE_EXE_SUFFIX:
848 command_line.force_exe_suffix = TRUE;
853 g_switch_value = strtoul (optarg, &end, 0);
855 einfo (_("%P%F: invalid number `%s'\n"), optarg);
861 case OPTION_GC_SECTIONS:
862 link_info.gc_sections = TRUE;
864 case OPTION_PRINT_GC_SECTIONS:
865 link_info.print_gc_sections = TRUE;
867 case OPTION_GC_KEEP_EXPORTED:
868 link_info.gc_keep_exported = TRUE;
875 ldfile_add_library_path (optarg, TRUE);
878 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
881 config.map_filename = "-";
884 /* Ignore. Was handled in a pre-parse. */
887 config.map_filename = optarg;
890 config.text_read_only = FALSE;
891 config.magic_demand_paged = FALSE;
892 input_flags.dynamic = FALSE;
894 case OPTION_NO_OMAGIC:
895 config.text_read_only = TRUE;
896 config.magic_demand_paged = TRUE;
897 /* NB/ Does not set input_flags.dynamic to TRUE.
898 Use --call-shared or -Bdynamic for this. */
901 config.magic_demand_paged = FALSE;
902 input_flags.dynamic = FALSE;
904 case OPTION_NO_DEFINE_COMMON:
905 command_line.inhibit_common_definition = TRUE;
907 case OPTION_NO_DEMANGLE:
910 case OPTION_NO_GC_SECTIONS:
911 link_info.gc_sections = FALSE;
913 case OPTION_NO_PRINT_GC_SECTIONS:
914 link_info.print_gc_sections = FALSE;
916 case OPTION_NO_KEEP_MEMORY:
917 link_info.keep_memory = FALSE;
919 case OPTION_NO_UNDEFINED:
920 link_info.unresolved_syms_in_objects
921 = how_to_report_unresolved_symbols;
923 case OPTION_ALLOW_SHLIB_UNDEFINED:
924 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
926 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
927 link_info.unresolved_syms_in_shared_libs
928 = how_to_report_unresolved_symbols;
930 case OPTION_UNRESOLVED_SYMBOLS:
931 if (strcmp (optarg, "ignore-all") == 0)
933 link_info.unresolved_syms_in_objects = RM_IGNORE;
934 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
936 else if (strcmp (optarg, "report-all") == 0)
938 link_info.unresolved_syms_in_objects
939 = how_to_report_unresolved_symbols;
940 link_info.unresolved_syms_in_shared_libs
941 = how_to_report_unresolved_symbols;
943 else if (strcmp (optarg, "ignore-in-object-files") == 0)
945 link_info.unresolved_syms_in_objects = RM_IGNORE;
946 link_info.unresolved_syms_in_shared_libs
947 = how_to_report_unresolved_symbols;
949 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
951 link_info.unresolved_syms_in_objects
952 = how_to_report_unresolved_symbols;
953 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
956 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
958 case OPTION_WARN_UNRESOLVED_SYMBOLS:
959 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
960 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
961 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
962 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
963 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
966 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
967 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
968 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
969 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
970 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
971 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
973 case OPTION_ALLOW_MULTIPLE_DEFINITION:
974 link_info.allow_multiple_definition = TRUE;
976 case OPTION_NO_UNDEFINED_VERSION:
977 link_info.allow_undefined_version = FALSE;
979 case OPTION_DEFAULT_SYMVER:
980 link_info.create_default_symver = TRUE;
982 case OPTION_DEFAULT_IMPORTED_SYMVER:
983 link_info.default_imported_symver = TRUE;
985 case OPTION_NO_WARN_MISMATCH:
986 command_line.warn_mismatch = FALSE;
988 case OPTION_NO_WARN_SEARCH_MISMATCH:
989 command_line.warn_search_mismatch = FALSE;
991 case OPTION_NOINHIBIT_EXEC:
992 force_make_executable = TRUE;
994 case OPTION_NOSTDLIB:
995 config.only_cmd_line_lib_dirs = TRUE;
997 case OPTION_NO_WHOLE_ARCHIVE:
998 input_flags.whole_archive = FALSE;
1001 /* FIXME "-O<non-digits> <value>" used to set the address of
1002 section <non-digits>. Was this for compatibility with
1003 something, or can we create a new option to do that
1004 (with a syntax similar to -defsym)?
1005 getopt can't handle two args to an option without kludges. */
1007 /* Enable optimizations of output files. */
1008 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1011 lang_add_output (optarg, 0);
1013 case OPTION_OFORMAT:
1014 lang_add_output_format (optarg, NULL, NULL, 0);
1016 case OPTION_OUT_IMPLIB:
1017 command_line.out_implib_filename = xstrdup (optarg);
1019 case OPTION_PRINT_SYSROOT:
1024 case OPTION_PRINT_OUTPUT_FORMAT:
1025 command_line.print_output_format = TRUE;
1027 #ifdef ENABLE_PLUGINS
1029 plugin_opt_plugin (optarg);
1031 case OPTION_PLUGIN_OPT:
1032 if (plugin_opt_plugin_arg (optarg))
1033 einfo (_("%P%F: bad -plugin-opt option\n"));
1035 #endif /* ENABLE_PLUGINS */
1037 link_info.emitrelocations = TRUE;
1041 if (optind == last_optind)
1042 /* This can happen if the user put "-rpath,a" on the command
1043 line. (Or something similar. The comma is important).
1044 Getopt becomes confused and thinks that this is a -r option
1045 but it cannot parse the text after the -r so it refuses to
1046 increment the optind counter. Detect this case and issue
1047 an error message here. We cannot just make this a warning,
1048 increment optind, and continue because getopt is too confused
1049 and will seg-fault the next time around. */
1050 einfo(_("%P%F: unrecognised option: %s\n"), argv[optind]);
1052 if (bfd_link_pic (&link_info))
1053 einfo (_("%P%F: -r and %s may not be used together\n"),
1054 bfd_link_dll (&link_info) ? "-shared" : "-pie");
1056 link_info.type = type_relocatable;
1057 config.build_constructors = FALSE;
1058 config.magic_demand_paged = FALSE;
1059 config.text_read_only = FALSE;
1060 input_flags.dynamic = FALSE;
1063 /* The GNU linker traditionally uses -R to mean to include
1064 only the symbols from a file. The Solaris linker uses -R
1065 to set the path used by the runtime linker to find
1066 libraries. This is the GNU linker -rpath argument. We
1067 try to support both simultaneously by checking the file
1068 named. If it is a directory, rather than a regular file,
1069 we assume -rpath was meant. */
1073 if (stat (optarg, &s) >= 0
1074 && ! S_ISDIR (s.st_mode))
1076 lang_add_input_file (optarg,
1077 lang_input_file_is_symbols_only_enum,
1084 if (command_line.rpath == NULL)
1085 command_line.rpath = xstrdup (optarg);
1088 size_t rpath_len = strlen (command_line.rpath);
1089 size_t optarg_len = strlen (optarg);
1091 char *cp = command_line.rpath;
1093 /* First see whether OPTARG is already in the path. */
1096 if (strncmp (optarg, cp, optarg_len) == 0
1097 && (cp[optarg_len] == 0
1098 || cp[optarg_len] == config.rpath_separator))
1102 /* Not yet found. */
1103 cp = strchr (cp, config.rpath_separator);
1111 buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1112 sprintf (buf, "%s%c%s", command_line.rpath,
1113 config.rpath_separator, optarg);
1114 free (command_line.rpath);
1115 command_line.rpath = buf;
1119 case OPTION_RPATH_LINK:
1120 if (command_line.rpath_link == NULL)
1121 command_line.rpath_link = xstrdup (optarg);
1126 buf = (char *) xmalloc (strlen (command_line.rpath_link)
1129 sprintf (buf, "%s%c%s", command_line.rpath_link,
1130 config.rpath_separator, optarg);
1131 free (command_line.rpath_link);
1132 command_line.rpath_link = buf;
1135 case OPTION_NO_RELAX:
1141 case OPTION_RETAIN_SYMBOLS_FILE:
1142 add_keepsyms_file (optarg);
1145 link_info.strip = strip_debugger;
1148 link_info.strip = strip_all;
1150 case OPTION_STRIP_DISCARDED:
1151 link_info.strip_discarded = TRUE;
1153 case OPTION_NO_STRIP_DISCARDED:
1154 link_info.strip_discarded = FALSE;
1157 if (config.has_shared)
1159 if (bfd_link_relocatable (&link_info))
1160 einfo (_("%P%F: -r and -shared may not be used together\n"));
1162 link_info.type = type_dll;
1163 /* When creating a shared library, the default
1164 behaviour is to ignore any unresolved references. */
1165 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1166 link_info.unresolved_syms_in_objects = RM_IGNORE;
1167 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1168 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1171 einfo (_("%P%F: -shared not supported\n"));
1174 if (config.has_shared)
1176 if (bfd_link_relocatable (&link_info))
1177 einfo (_("%P%F: -r and -pie may not be used together\n"));
1179 link_info.type = type_pie;
1182 einfo (_("%P%F: -pie not supported\n"));
1184 case 'h': /* Used on Solaris. */
1186 if (optarg[0] == '\0' && command_line.soname
1187 && command_line.soname[0])
1188 einfo (_("%P: SONAME must not be empty string; keeping previous one\n"));
1190 command_line.soname = optarg;
1192 case OPTION_SORT_COMMON:
1194 || strcmp (optarg, N_("descending")) == 0)
1195 config.sort_common = sort_descending;
1196 else if (strcmp (optarg, N_("ascending")) == 0)
1197 config.sort_common = sort_ascending;
1199 einfo (_("%P%F: invalid common section sorting option: %s\n"),
1202 case OPTION_SORT_SECTION:
1203 if (strcmp (optarg, N_("name")) == 0)
1204 sort_section = by_name;
1205 else if (strcmp (optarg, N_("alignment")) == 0)
1206 sort_section = by_alignment;
1208 einfo (_("%P%F: invalid section sorting option: %s\n"),
1212 config.stats = TRUE;
1214 case OPTION_SYMBOLIC:
1215 command_line.symbolic = symbolic;
1217 case OPTION_SYMBOLIC_FUNCTIONS:
1218 command_line.symbolic = symbolic_functions;
1224 previous_script_handle = saved_script_handle;
1225 ldfile_open_command_file (optarg);
1226 parser_input = input_script;
1228 previous_script_handle = NULL;
1230 case OPTION_DEFAULT_SCRIPT:
1231 command_line.default_script = optarg;
1233 case OPTION_SECTION_START:
1239 /* Check for <something>=<somthing>... */
1240 optarg2 = strchr (optarg, '=');
1241 if (optarg2 == NULL)
1242 einfo (_("%P%F: invalid argument to option"
1243 " \"--section-start\"\n"));
1247 /* So far so good. Are all the args present? */
1248 if ((*optarg == '\0') || (*optarg2 == '\0'))
1249 einfo (_("%P%F: missing argument(s) to option"
1250 " \"--section-start\"\n"));
1252 /* We must copy the section name as set_section_start
1253 doesn't do it for us. */
1254 len = optarg2 - optarg;
1255 sec_name = (char *) xmalloc (len);
1256 memcpy (sec_name, optarg, len - 1);
1257 sec_name[len - 1] = 0;
1259 /* Then set it... */
1260 set_section_start (sec_name, optarg2);
1263 case OPTION_TARGET_HELP:
1264 /* Mention any target specific options. */
1265 ldemul_list_emulation_options (stdout);
1268 set_segment_start (".bss", optarg);
1271 set_segment_start (".data", optarg);
1274 set_segment_start (".text", optarg);
1276 case OPTION_TTEXT_SEGMENT:
1277 set_segment_start (".text-segment", optarg);
1279 case OPTION_TRODATA_SEGMENT:
1280 set_segment_start (".rodata-segment", optarg);
1282 case OPTION_TLDATA_SEGMENT:
1283 set_segment_start (".ldata-segment", optarg);
1285 case OPTION_TRADITIONAL_FORMAT:
1286 link_info.traditional_format = TRUE;
1288 case OPTION_TASK_LINK:
1289 link_info.task_link = TRUE;
1292 if (bfd_link_pic (&link_info))
1293 einfo (_("%P%F: -r and %s may not be used together\n"),
1294 bfd_link_dll (&link_info) ? "-shared" : "-pie");
1296 link_info.type = type_relocatable;
1297 config.build_constructors = TRUE;
1298 config.magic_demand_paged = FALSE;
1299 config.text_read_only = FALSE;
1300 input_flags.dynamic = FALSE;
1303 ldlang_add_undef (optarg, TRUE);
1305 case OPTION_REQUIRE_DEFINED_SYMBOL:
1306 ldlang_add_require_defined (optarg);
1310 lang_add_unique (optarg);
1312 config.unique_orphan_sections = TRUE;
1314 case OPTION_VERBOSE:
1316 version_printed = TRUE;
1318 overflow_cutoff_limit = -2;
1322 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1324 einfo (_("%P%F: invalid number `%s'\n"), optarg);
1325 #ifdef ENABLE_PLUGINS
1326 report_plugin_symbols = level > 1;
1327 #endif /* ENABLE_PLUGINS */
1332 version_printed = TRUE;
1336 version_printed = TRUE;
1338 case OPTION_VERSION:
1342 case OPTION_VERSION_SCRIPT:
1343 /* This option indicates a small script that only specifies
1344 version information. Read it, but don't assume that
1345 we've seen a linker script. */
1347 FILE *hold_script_handle;
1349 hold_script_handle = saved_script_handle;
1350 ldfile_open_command_file (optarg);
1351 saved_script_handle = hold_script_handle;
1352 parser_input = input_version_script;
1356 case OPTION_VERSION_EXPORTS_SECTION:
1357 /* This option records a version symbol to be applied to the
1358 symbols listed for export to be found in the object files
1359 .exports sections. */
1360 command_line.version_exports_section = optarg;
1362 case OPTION_DYNAMIC_LIST_DATA:
1363 command_line.dynamic_list = dynamic_list_data;
1364 if (command_line.symbolic == symbolic)
1365 command_line.symbolic = symbolic_unset;
1367 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1368 lang_append_dynamic_list_cpp_typeinfo ();
1369 if (command_line.dynamic_list != dynamic_list_data)
1370 command_line.dynamic_list = dynamic_list;
1371 if (command_line.symbolic == symbolic)
1372 command_line.symbolic = symbolic_unset;
1374 case OPTION_DYNAMIC_LIST_CPP_NEW:
1375 lang_append_dynamic_list_cpp_new ();
1376 if (command_line.dynamic_list != dynamic_list_data)
1377 command_line.dynamic_list = dynamic_list;
1378 if (command_line.symbolic == symbolic)
1379 command_line.symbolic = symbolic_unset;
1381 case OPTION_DYNAMIC_LIST:
1382 /* This option indicates a small script that only specifies
1383 a dynamic list. Read it, but don't assume that we've
1384 seen a linker script. */
1386 FILE *hold_script_handle;
1388 hold_script_handle = saved_script_handle;
1389 ldfile_open_command_file (optarg);
1390 saved_script_handle = hold_script_handle;
1391 parser_input = input_dynamic_list;
1394 if (command_line.dynamic_list != dynamic_list_data)
1395 command_line.dynamic_list = dynamic_list;
1396 if (command_line.symbolic == symbolic)
1397 command_line.symbolic = symbolic_unset;
1399 case OPTION_WARN_COMMON:
1400 config.warn_common = TRUE;
1402 case OPTION_WARN_CONSTRUCTORS:
1403 config.warn_constructors = TRUE;
1405 case OPTION_WARN_FATAL:
1406 config.fatal_warnings = TRUE;
1408 case OPTION_NO_WARN_FATAL:
1409 config.fatal_warnings = FALSE;
1411 case OPTION_WARN_MULTIPLE_GP:
1412 config.warn_multiple_gp = TRUE;
1414 case OPTION_WARN_ONCE:
1415 config.warn_once = TRUE;
1417 case OPTION_WARN_SECTION_ALIGN:
1418 config.warn_section_align = TRUE;
1420 case OPTION_WARN_SHARED_TEXTREL:
1421 link_info.warn_shared_textrel = TRUE;
1423 case OPTION_WARN_ALTERNATE_EM:
1424 link_info.warn_alternate_em = TRUE;
1426 case OPTION_WHOLE_ARCHIVE:
1427 input_flags.whole_archive = TRUE;
1429 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1430 input_flags.add_DT_NEEDED_for_dynamic = TRUE;
1432 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1433 input_flags.add_DT_NEEDED_for_dynamic = FALSE;
1435 case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1436 input_flags.add_DT_NEEDED_for_regular = TRUE;
1438 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1439 input_flags.add_DT_NEEDED_for_regular = FALSE;
1444 case OPTION_IGNORE_UNRESOLVED_SYMBOL:
1445 add_ignoresym (&link_info, optarg);
1447 case OPTION_DISCARD_NONE:
1448 link_info.discard = discard_none;
1451 link_info.discard = discard_l;
1454 link_info.discard = discard_all;
1457 if (CONST_STRNEQ (optarg, "P,"))
1459 if (default_dirlist != NULL)
1460 free (default_dirlist);
1461 default_dirlist = xstrdup (optarg);
1466 case OPTION_SPARE_DYNAMIC_TAGS:
1467 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1469 case OPTION_SPLIT_BY_RELOC:
1471 config.split_by_reloc = strtoul (optarg, NULL, 0);
1473 config.split_by_reloc = 32768;
1475 case OPTION_SPLIT_BY_FILE:
1477 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1479 config.split_by_file = 1;
1481 case OPTION_CHECK_SECTIONS:
1482 command_line.check_section_addresses = 1;
1484 case OPTION_NO_CHECK_SECTIONS:
1485 command_line.check_section_addresses = 0;
1487 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1488 command_line.accept_unknown_input_arch = TRUE;
1490 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1491 command_line.accept_unknown_input_arch = FALSE;
1494 lang_enter_group ();
1499 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1501 lang_leave_group ();
1506 link_info.init_function = optarg;
1510 link_info.fini_function = optarg;
1513 case OPTION_REDUCE_MEMORY_OVERHEADS:
1514 link_info.reduce_memory_overheads = TRUE;
1515 if (config.hash_table_size == 0)
1516 config.hash_table_size = 1021;
1519 case OPTION_HASH_SIZE:
1521 bfd_size_type new_size;
1523 new_size = strtoul (optarg, NULL, 0);
1525 config.hash_table_size = new_size;
1527 einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1531 case OPTION_PUSH_STATE:
1532 input_flags.pushed = xmemdup (&input_flags,
1533 sizeof (input_flags),
1534 sizeof (input_flags));
1537 case OPTION_POP_STATE:
1538 if (input_flags.pushed == NULL)
1539 einfo (_("%P%F: no state pushed before popping\n"));
1542 struct lang_input_statement_flags *oldp = input_flags.pushed;
1543 memcpy (&input_flags, oldp, sizeof (input_flags));
1548 case OPTION_PRINT_MEMORY_USAGE:
1549 command_line.print_memory_usage = TRUE;
1552 case OPTION_ORPHAN_HANDLING:
1553 if (strcasecmp (optarg, "place") == 0)
1554 config.orphan_handling = orphan_handling_place;
1555 else if (strcasecmp (optarg, "warn") == 0)
1556 config.orphan_handling = orphan_handling_warn;
1557 else if (strcasecmp (optarg, "error") == 0)
1558 config.orphan_handling = orphan_handling_error;
1559 else if (strcasecmp (optarg, "discard") == 0)
1560 config.orphan_handling = orphan_handling_discard;
1562 einfo (_("%P%F: invalid argument to option"
1563 " \"--orphan-handling\"\n"));
1568 if (command_line.soname && command_line.soname[0] == '\0')
1570 einfo (_("%P: SONAME must not be empty string; ignored\n"));
1571 command_line.soname = NULL;
1576 lang_leave_group ();
1580 if (default_dirlist != NULL)
1582 set_default_dirlist (default_dirlist);
1583 free (default_dirlist);
1586 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1587 /* FIXME: Should we allow emulations a chance to set this ? */
1588 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1590 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1591 /* FIXME: Should we allow emulations a chance to set this ? */
1592 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1594 if (bfd_link_relocatable (&link_info)
1595 && command_line.check_section_addresses < 0)
1596 command_line.check_section_addresses = 0;
1598 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
1599 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
1600 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are
1601 for PIC outputs. -Bsymbolic overrides all others and vice versa. */
1602 switch (command_line.symbolic)
1604 case symbolic_unset:
1607 /* -Bsymbolic is for PIC output only. */
1608 if (bfd_link_pic (&link_info))
1610 link_info.symbolic = TRUE;
1611 /* Should we free the unused memory? */
1612 link_info.dynamic_list = NULL;
1613 command_line.dynamic_list = dynamic_list_unset;
1616 case symbolic_functions:
1617 /* -Bsymbolic-functions is for PIC output only. */
1618 if (bfd_link_pic (&link_info))
1619 command_line.dynamic_list = dynamic_list_data;
1623 switch (command_line.dynamic_list)
1625 case dynamic_list_unset:
1627 case dynamic_list_data:
1628 link_info.dynamic_data = TRUE;
1631 link_info.dynamic = TRUE;
1635 if (!bfd_link_dll (&link_info))
1637 if (command_line.filter_shlib)
1638 einfo (_("%P%F: -F may not be used without -shared\n"));
1639 if (command_line.auxiliary_filters)
1640 einfo (_("%P%F: -f may not be used without -shared\n"));
1643 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
1644 don't see how else this can be handled, since in this case we
1645 must preserve all externally visible symbols. */
1646 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all)
1648 link_info.strip = strip_debugger;
1649 if (link_info.discard == discard_sec_merge)
1650 link_info.discard = discard_all;
1654 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1655 library search path. */
1658 set_default_dirlist (char *dirlist_ptr)
1664 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1667 if (*dirlist_ptr != '\0')
1668 ldfile_add_library_path (dirlist_ptr, TRUE);
1671 dirlist_ptr = p + 1;
1676 set_section_start (char *sect, char *valstr)
1679 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1681 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1682 lang_section_start (sect, exp_intop (val), NULL);
1686 set_segment_start (const char *section, char *valstr)
1692 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1694 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1695 /* If we already have an entry for this segment, update the existing
1698 for (seg = segments; seg; seg = seg->next)
1699 if (strcmp (seg->name, name) == 0)
1702 lang_section_start (section, exp_intop (val), seg);
1705 /* There was no existing value so we must create a new segment
1707 seg = (segment_type *) stat_alloc (sizeof (*seg));
1711 /* Add it to the linked list of segments. */
1712 seg->next = segments;
1714 /* Historically, -Ttext and friends set the base address of a
1715 particular section. For backwards compatibility, we still do
1716 that. If a SEGMENT_START directive is seen, the section address
1717 assignment will be disabled. */
1718 lang_section_start (section, exp_intop (val), seg);
1722 elf_shlib_list_options (FILE *file)
1725 --audit=AUDITLIB Specify a library to use for auditing\n"));
1727 -Bgroup Selects group name lookup rules for DSO\n"));
1729 --disable-new-dtags Disable new dynamic tags\n"));
1731 --enable-new-dtags Enable new dynamic tags\n"));
1733 --eh-frame-hdr Create .eh_frame_hdr section\n"));
1735 --no-eh-frame-hdr Do not create .eh_frame_hdr section\n"));
1737 --exclude-libs=LIBS Make all symbols in LIBS hidden\n"));
1739 --hash-style=STYLE Set hash style to sysv, gnu or both\n"));
1741 -P AUDITLIB, --depaudit=AUDITLIB\n" "\
1742 Specify a library to use for auditing dependencies\n"));
1744 -z combreloc Merge dynamic relocs into one section and sort\n"));
1746 -z nocombreloc Don't merge dynamic relocs into one section\n"));
1748 -z global Make symbols in DSO available for subsequently\n\
1749 loaded objects\n"));
1751 -z initfirst Mark DSO to be initialized first at runtime\n"));
1753 -z interpose Mark object to interpose all DSOs but executable\n"));
1755 -z lazy Mark object lazy runtime binding (default)\n"));
1757 -z loadfltr Mark object requiring immediate process\n"));
1759 -z nocopyreloc Don't create copy relocs\n"));
1761 -z nodefaultlib Mark object not to use default search paths\n"));
1763 -z nodelete Mark DSO non-deletable at runtime\n"));
1765 -z nodlopen Mark DSO not available to dlopen\n"));
1767 -z nodump Mark DSO not available to dldump\n"));
1769 -z now Mark object non-lazy runtime binding\n"));
1771 -z origin Mark object requiring immediate $ORIGIN\n\
1772 processing at runtime\n"));
1773 #if DEFAULT_LD_Z_RELRO
1775 -z relro Create RELRO program header (default)\n"));
1777 -z norelro Don't create RELRO program header\n"));
1780 -z relro Create RELRO program header\n"));
1782 -z norelro Don't create RELRO program header (default)\n"));
1785 -z common Generate common symbols with STT_COMMON type\n"));
1787 -z nocommon Generate common symbols with STT_OBJECT type\n"));
1789 -z stacksize=SIZE Set size of stack segment\n"));
1791 -z text Treat DT_TEXTREL in shared object as error\n"));
1793 -z notext Don't treat DT_TEXTREL in shared object as error\n"));
1795 -z textoff Don't treat DT_TEXTREL in shared object as error\n"));
1799 elf_static_list_options (FILE *file)
1802 --build-id[=STYLE] Generate build ID note\n"));
1804 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\
1805 Compress DWARF debug sections using zlib\n"));
1806 #ifdef DEFAULT_FLAG_COMPRESS_DEBUG
1808 Default: zlib-gabi\n"));
1814 -z common-page-size=SIZE Set common page size to SIZE\n"));
1816 -z max-page-size=SIZE Set maximum page size to SIZE\n"));
1818 -z defs Report unresolved symbols in object files.\n"));
1820 -z muldefs Allow multiple definitions\n"));
1822 -z execstack Mark executable as requiring executable stack\n"));
1824 -z noexecstack Mark executable as not requiring executable stack\n"));
1828 elf_plt_unwind_list_options (FILE *file)
1831 --ld-generated-unwind-info Generate exception handling info for PLT\n\
1832 --no-ld-generated-unwind-info\n\
1833 Don't generate exception handling info for PLT\n"));
1837 ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib,
1838 bfd_boolean plt_unwind)
1842 printf (_("ELF emulations:\n"));
1844 elf_plt_unwind_list_options (file);
1845 elf_static_list_options (file);
1847 elf_shlib_list_options (file);
1851 /* Print help messages for the options. */
1857 const char **targets, **pp;
1860 printf (_("Usage: %s [options] file...\n"), program_name);
1862 printf (_("Options:\n"));
1863 for (i = 0; i < OPTION_COUNT; i++)
1865 if (ld_options[i].doc != NULL)
1878 if (ld_options[j].shortopt != '\0'
1879 && ld_options[j].control != NO_HELP)
1881 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1882 len += (comma ? 2 : 0) + 2;
1883 if (ld_options[j].arg != NULL)
1885 if (ld_options[j].opt.has_arg != optional_argument)
1890 printf ("%s", _(ld_options[j].arg));
1891 len += strlen (_(ld_options[j].arg));
1897 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1902 if (ld_options[j].opt.name != NULL
1903 && ld_options[j].control != NO_HELP)
1906 (ld_options[j].control == TWO_DASHES
1907 || ld_options[j].control == EXACTLY_TWO_DASHES);
1911 two_dashes ? "-" : "",
1912 ld_options[j].opt.name);
1913 len += ((comma ? 2 : 0)
1915 + (two_dashes ? 1 : 0)
1916 + strlen (ld_options[j].opt.name));
1917 if (ld_options[j].arg != NULL)
1919 printf (" %s", _(ld_options[j].arg));
1920 len += 1 + strlen (_(ld_options[j].arg));
1926 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1934 for (; len < 30; len++)
1937 printf ("%s\n", _(ld_options[i].doc));
1940 printf (_(" @FILE"));
1941 for (len = strlen (" @FILE"); len < 30; len++)
1943 printf (_("Read options from FILE\n"));
1945 /* Note: Various tools (such as libtool) depend upon the
1946 format of the listings below - do not change them. */
1947 /* xgettext:c-format */
1948 printf (_("%s: supported targets:"), program_name);
1949 targets = bfd_target_list ();
1950 for (pp = targets; *pp != NULL; pp++)
1951 printf (" %s", *pp);
1955 /* xgettext:c-format */
1956 printf (_("%s: supported emulations: "), program_name);
1957 ldemul_list_emulations (stdout);
1960 /* xgettext:c-format */
1961 printf (_("%s: emulation specific options:\n"), program_name);
1962 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS,
1963 ELF_PLT_UNWIND_LIST_OPTIONS);
1964 ldemul_list_emulation_options (stdout);
1967 if (REPORT_BUGS_TO[0])
1968 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);