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Fix: Segmentation fault caused by npd in objdump
[binutils-gdb.git] / ld / lexsup.c
blobfe8722313fedf6d72846fc45418831e5c77efab6
1 /* Parse options for the GNU linker.
2 Copyright (C) 1991-2023 Free Software Foundation, Inc.
3
4 This file is part of the GNU Binutils.
5
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.
10
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.
15
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. */
20
21 #include "sysdep.h"
22 #include "bfd.h"
23 #include "bfdver.h"
24 #include "libiberty.h"
25 #include "filenames.h"
26 #include <stdio.h>
27 #include <string.h>
28 #include <errno.h>
29 #include "safe-ctype.h"
30 #include "getopt.h"
31 #include "bfdlink.h"
32 #include "ctf-api.h"
33 #include "ld.h"
34 #include "ldmain.h"
35 #include "ldmisc.h"
36 #include "ldexp.h"
37 #include "ldlang.h"
38 #include <ldgram.h>
39 #include "ldlex.h"
40 #include "ldfile.h"
41 #include "ldver.h"
42 #include "ldemul.h"
43 #include "demangle.h"
44 #if BFD_SUPPORTS_PLUGINS
45 #include "plugin.h"
46 #endif /* BFD_SUPPORTS_PLUGINS */
47
48 #ifndef PATH_SEPARATOR
49 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
50 #define PATH_SEPARATOR ';'
51 #else
52 #define PATH_SEPARATOR ':'
53 #endif
54 #endif
55
56 /* Somewhere above, sys/stat.h got included . . . . */
57 #if !defined(S_ISDIR) && defined(S_IFDIR)
58 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
59 #endif
60
61 static void set_default_dirlist (char *);
62 static void set_section_start (char *, char *);
63 static void set_segment_start (const char *, char *);
64 static void help (void);
65
66 /* The long options. This structure is used for both the option
67 parsing and the help text. */
68
69 enum control_enum {
70 /* Use one dash before long option name. */
71 ONE_DASH = 1,
72 /* Use two dashes before long option name. */
73 TWO_DASHES = 2,
74 /* Only accept two dashes before the long option name.
75 This is an overloading of the use of this enum, since originally it
76 was only intended to tell the --help display function how to display
77 the long option name. This feature was added in order to resolve
78 the confusion about the -omagic command line switch. Is it setting
79 the output file name to "magic" or is it setting the NMAGIC flag on
80 the output ? It has been decided that it is setting the output file
81 name, and that if you want to set the NMAGIC flag you should use -N
82 or --omagic. */
83 EXACTLY_TWO_DASHES,
84 /* Don't mention this option in --help output. */
85 NO_HELP
86 };
87
88 struct ld_option
89 {
90 /* The long option information. */
91 struct option opt;
92 /* The short option with the same meaning ('\0' if none). */
93 char shortopt;
94 /* The name of the argument (NULL if none). */
95 const char *arg;
96 /* The documentation string. If this is NULL, this is a synonym for
97 the previous option. */
98 const char *doc;
99 enum control_enum control;
100 };
101
102 static const struct ld_option ld_options[] =
103 {
104 { {NULL, required_argument, NULL, '\0'},
105 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
106 ONE_DASH },
107 { {"architecture", required_argument, NULL, 'A'},
108 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
109 { {"format", required_argument, NULL, 'b'},
110 'b', N_("TARGET"), N_("Specify target for following input files"),
111 TWO_DASHES },
112 { {"mri-script", required_argument, NULL, 'c'},
113 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
114 { {"dc", no_argument, NULL, 'd'},
115 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
116 { {"dp", no_argument, NULL, 'd'},
117 '\0', NULL, NULL, ONE_DASH },
118 { {"dependency-file", required_argument, NULL, OPTION_DEPENDENCY_FILE},
119 '\0', N_("FILE"), N_("Write dependency file"), TWO_DASHES },
120 { {"force-group-allocation", no_argument, NULL,
121 OPTION_FORCE_GROUP_ALLOCATION},
122 '\0', NULL, N_("Force group members out of groups"), TWO_DASHES },
123 { {"entry", required_argument, NULL, 'e'},
124 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
125 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
126 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
127 { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
128 '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
129 { {"enable-non-contiguous-regions", no_argument, NULL, OPTION_NON_CONTIGUOUS_REGIONS},
130 '\0', NULL, N_("Enable support of non-contiguous memory regions"), TWO_DASHES },
131 { {"enable-non-contiguous-regions-warnings", no_argument, NULL, OPTION_NON_CONTIGUOUS_REGIONS_WARNINGS},
132 '\0', NULL, N_("Enable warnings when --enable-non-contiguous-regions may cause unexpected behaviour"), TWO_DASHES },
133 { {"disable-linker-version", no_argument, NULL, OPTION_DISABLE_LINKER_VERSION},
134 '\0', NULL, N_("Disable the LINKER_VERSION linker script directive"), TWO_DASHES },
135 { {"enable-linker-version", no_argument, NULL, OPTION_ENABLE_LINKER_VERSION},
136 '\0', NULL, N_("Enable the LINKER_VERSION linker script directive"), TWO_DASHES },
137 { {"EB", no_argument, NULL, OPTION_EB},
138 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
139 { {"EL", no_argument, NULL, OPTION_EL},
140 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
141 { {"auxiliary", required_argument, NULL, 'f'},
142 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
143 TWO_DASHES },
144 { {"filter", required_argument, NULL, 'F'},
145 'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
146 TWO_DASHES },
147 { {NULL, no_argument, NULL, '\0'},
148 'g', NULL, N_("Ignored"), ONE_DASH },
149 { {"gpsize", required_argument, NULL, 'G'},
150 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
151 TWO_DASHES },
152 { {"soname", required_argument, NULL, OPTION_SONAME},
153 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
154 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
155 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
156 TWO_DASHES },
157 { {"no-dynamic-linker", no_argument, NULL, OPTION_NO_DYNAMIC_LINKER},
158 '\0', NULL, N_("Produce an executable with no program interpreter header"),
159 TWO_DASHES },
160 { {"library", required_argument, NULL, 'l'},
161 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
162 { {"library-path", required_argument, NULL, 'L'},
163 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
164 TWO_DASHES },
165 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
166 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
167 { {NULL, required_argument, NULL, '\0'},
168 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
169 { {"print-map", no_argument, NULL, 'M'},
170 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
171 { {"nmagic", no_argument, NULL, 'n'},
172 'n', NULL, N_("Do not page align data"), TWO_DASHES },
173 { {"omagic", no_argument, NULL, 'N'},
174 'N', NULL, N_("Do not page align data, do not make text readonly"),
175 EXACTLY_TWO_DASHES },
176 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
177 '\0', NULL, N_("Page align data, make text readonly"),
178 EXACTLY_TWO_DASHES },
179 { {"output", required_argument, NULL, 'o'},
180 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
181 { {NULL, required_argument, NULL, '\0'},
182 'O', NULL, N_("Optimize output file"), ONE_DASH },
183 { {"out-implib", required_argument, NULL, OPTION_OUT_IMPLIB},
184 '\0', N_("FILE"), N_("Generate import library"), TWO_DASHES },
185 #if BFD_SUPPORTS_PLUGINS
186 { {"plugin", required_argument, NULL, OPTION_PLUGIN},
187 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
188 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
189 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
190 { {"flto", optional_argument, NULL, OPTION_IGNORE},
191 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
192 ONE_DASH },
193 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
194 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
195 ONE_DASH },
196 #else
197 { {"plugin", required_argument, NULL, OPTION_IGNORE},
198 '\0', N_("PLUGIN"), N_("Load named plugin (ignored)"), ONE_DASH },
199 { {"plugin-opt", required_argument, NULL, OPTION_IGNORE},
200 '\0', N_("ARG"), N_("Send arg to last-loaded plugin (ignored)"), ONE_DASH },
201 #endif /* BFD_SUPPORTS_PLUGINS */
202 { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE},
203 '\0', NULL, N_("Ignored for GCC linker option compatibility"),
204 ONE_DASH },
205 { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE},
206 '\0', NULL, N_("Ignored for gold option compatibility"),
207 TWO_DASHES },
208 { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE},
209 '\0', NULL, N_("Ignored for gold option compatibility"),
210 TWO_DASHES },
211 { {"Qy", no_argument, NULL, OPTION_IGNORE},
212 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
213 { {"emit-relocs", no_argument, NULL, 'q'},
214 'q', NULL, "Generate relocations in final output", TWO_DASHES },
215 { {"relocatable", no_argument, NULL, 'r'},
216 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
217 { {NULL, no_argument, NULL, '\0'},
218 'i', NULL, NULL, ONE_DASH },
219 { {"just-symbols", required_argument, NULL, 'R'},
220 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
221 TWO_DASHES },
222
223 { {"remap-inputs-file", required_argument, NULL, OPTION_REMAP_INPUTS_FILE},
224 '\0', N_("FILE"), "Provide a FILE containing input remapings", TWO_DASHES },
225 { {"remap-inputs", required_argument, NULL, OPTION_REMAP_INPUTS},
226 '\0', N_("PATTERN=FILE"), "Remap input files matching PATTERN to FILE", TWO_DASHES },
227
228 { {"strip-all", no_argument, NULL, 's'},
229 's', NULL, N_("Strip all symbols"), TWO_DASHES },
230 { {"strip-debug", no_argument, NULL, 'S'},
231 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
232 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
233 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
234 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
235 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
236 { {"trace", no_argument, NULL, 't'},
237 't', NULL, N_("Trace file opens"), TWO_DASHES },
238 { {"script", required_argument, NULL, 'T'},
239 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
240 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
241 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
242 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
243 '\0', NULL, NULL, ONE_DASH },
244 { {"undefined", required_argument, NULL, 'u'},
245 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
246 TWO_DASHES },
247 { {"require-defined", required_argument, NULL, OPTION_REQUIRE_DEFINED_SYMBOL},
248 '\0', N_("SYMBOL"), N_("Require SYMBOL be defined in the final output"),
249 TWO_DASHES },
250 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
251 '\0', N_("[=SECTION]"),
252 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
253 { {"Ur", no_argument, NULL, OPTION_UR},
254 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
255 { {"version", no_argument, NULL, OPTION_VERSION},
256 'v', NULL, N_("Print version information"), TWO_DASHES },
257 { {NULL, no_argument, NULL, '\0'},
258 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
259 { {"discard-all", no_argument, NULL, 'x'},
260 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
261 { {"discard-locals", no_argument, NULL, 'X'},
262 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
263 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
264 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
265 { {"trace-symbol", required_argument, NULL, 'y'},
266 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
267 { {NULL, required_argument, NULL, '\0'},
268 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
269 ONE_DASH },
270 { {"start-group", no_argument, NULL, '('},
271 '(', NULL, N_("Start a group"), TWO_DASHES },
272 { {"end-group", no_argument, NULL, ')'},
273 ')', NULL, N_("End a group"), TWO_DASHES },
274 { {"accept-unknown-input-arch", no_argument, NULL,
275 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
276 '\0', NULL,
277 N_("Accept input files whose architecture cannot be determined"),
278 TWO_DASHES },
279 { {"no-accept-unknown-input-arch", no_argument, NULL,
280 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
281 '\0', NULL, N_("Reject input files whose architecture is unknown"),
282 TWO_DASHES },
283
284 /* The next two options are deprecated because of their similarity to
285 --as-needed and --no-as-needed. They have been replaced by
286 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */
287 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
288 '\0', NULL, NULL, NO_HELP },
289 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
290 '\0', NULL, NULL, NO_HELP },
291
292 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
293 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
294 TWO_DASHES },
295 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
296 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
297 " the command line"),
298 TWO_DASHES },
299 { {"assert", required_argument, NULL, OPTION_ASSERT},
300 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
301 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
302 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
303 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
304 '\0', NULL, NULL, ONE_DASH },
305 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
306 '\0', NULL, NULL, ONE_DASH },
307 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
308 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
309 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
310 '\0', NULL, NULL, ONE_DASH },
311 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
312 '\0', NULL, NULL, ONE_DASH },
313 { {"static", no_argument, NULL, OPTION_NON_SHARED},
314 '\0', NULL, NULL, ONE_DASH },
315 { {"Bno-symbolic", no_argument, NULL, OPTION_NO_SYMBOLIC},
316 '\0', NULL, N_("Don't bind global references locally"), ONE_DASH },
317 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
318 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
319 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
320 '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
321 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
322 '\0', NULL, N_("Check section addresses for overlaps (default)"),
323 TWO_DASHES },
324 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
325 '\0', NULL, N_("Do not check section addresses for overlaps"),
326 TWO_DASHES },
327 { {"copy-dt-needed-entries", no_argument, NULL,
328 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
329 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
330 TWO_DASHES },
331 { {"no-copy-dt-needed-entries", no_argument, NULL,
332 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
333 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
334 TWO_DASHES },
335
336 { {"cref", no_argument, NULL, OPTION_CREF},
337 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
338 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
339 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
340 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
341 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
342 TWO_DASHES },
343 { {"disable-multiple-abs-defs", no_argument, NULL,
344 OPTION_DISABLE_MULTIPLE_DEFS_ABS},
345 '\0', NULL, N_("Do not allow multiple definitions with symbols included\n"
346 " in filename invoked by -R "
347 "or --just-symbols"),
348 TWO_DASHES},
349 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
350 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
351 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
352 '\0', NULL, N_("Treat warnings as errors"),
353 TWO_DASHES },
354 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
355 '\0', NULL, N_("Do not treat warnings as errors (default)"),
356 TWO_DASHES },
357 { {"fini", required_argument, NULL, OPTION_FINI},
358 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
359 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
360 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
361 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
362 '\0', NULL, N_("Remove unused sections (on some targets)"),
363 TWO_DASHES },
364 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
365 '\0', NULL, N_("Don't remove unused sections (default)"),
366 TWO_DASHES },
367 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
368 '\0', NULL, N_("List removed unused sections on stderr"),
369 TWO_DASHES },
370 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
371 '\0', NULL, N_("Do not list removed unused sections"),
372 TWO_DASHES },
373 { {"gc-keep-exported", no_argument, NULL, OPTION_GC_KEEP_EXPORTED},
374 '\0', NULL, N_("Keep exported symbols when removing unused sections"),
375 TWO_DASHES },
376 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
377 '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
378 TWO_DASHES },
379 { {"help", no_argument, NULL, OPTION_HELP},
380 '\0', NULL, N_("Print option help"), TWO_DASHES },
381 { {"init", required_argument, NULL, OPTION_INIT},
382 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
383 { {"Map", required_argument, NULL, OPTION_MAP},
384 '\0', N_("FILE/DIR"), N_("Write a linker map to FILE or DIR/<outputname>.map"), ONE_DASH },
385 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
386 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
387 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
388 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
389 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
390 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
391 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
392 '\0', NULL, N_("Do not allow unresolved references in object files"),
393 TWO_DASHES },
394 { {"no-warnings", no_argument, NULL, OPTION_NO_WARNINGS},
395 'w', NULL, N_("Do not display any warning or error messages"),
396 TWO_DASHES },
397 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
398 '\0', NULL, N_("Allow unresolved references in shared libraries"),
399 TWO_DASHES },
400 { {"no-allow-shlib-undefined", no_argument, NULL,
401 OPTION_NO_ALLOW_SHLIB_UNDEFINED},
402 '\0', NULL, N_("Do not allow unresolved references in shared libs"),
403 TWO_DASHES },
404 { {"allow-multiple-definition", no_argument, NULL,
405 OPTION_ALLOW_MULTIPLE_DEFINITION},
406 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
407 #if SUPPORT_ERROR_HANDLING_SCRIPT
408 { {"error-handling-script", required_argument, NULL,
409 OPTION_ERROR_HANDLING_SCRIPT},
410 '\0', N_("SCRIPT"), N_("Provide a script to help with undefined symbol errors"), TWO_DASHES},
411 #endif
412 { {"undefined-version", no_argument, NULL, OPTION_UNDEFINED_VERSION},
413 '\0', NULL, N_("Allow undefined version"), EXACTLY_TWO_DASHES },
414 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
415 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
416 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
417 '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
418 { {"default-imported-symver", no_argument, NULL,
419 OPTION_DEFAULT_IMPORTED_SYMVER},
420 '\0', NULL, N_("Create default symbol version for imported symbols"),
421 TWO_DASHES },
422 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
423 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
424 { {"no-warn-search-mismatch", no_argument, NULL,
425 OPTION_NO_WARN_SEARCH_MISMATCH},
426 '\0', NULL, N_("Don't warn on finding an incompatible library"),
427 TWO_DASHES},
428 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
429 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
430 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
431 '\0', NULL, N_("Create an output file even if errors occur"),
432 TWO_DASHES },
433 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
434 '\0', NULL, NULL, NO_HELP },
435 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
436 '\0', NULL, N_("Only use library directories specified on\n"
437 " the command line"),
438 ONE_DASH },
439 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
440 '\0', N_("TARGET"), N_("Specify target of output file"),
441 EXACTLY_TWO_DASHES },
442 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT},
443 '\0', NULL, N_("Print default output format"), TWO_DASHES },
444 { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT},
445 '\0', NULL, N_("Print current sysroot"), TWO_DASHES },
446 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
447 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
448 { {"reduce-memory-overheads", no_argument, NULL,
449 OPTION_REDUCE_MEMORY_OVERHEADS},
450 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
451 TWO_DASHES },
452 { {"max-cache-size=SIZE", required_argument, NULL,
453 OPTION_MAX_CACHE_SIZE},
454 '\0', NULL, N_("Set the maximum cache size to SIZE bytes"),
455 TWO_DASHES },
456 { {"relax", no_argument, NULL, OPTION_RELAX},
457 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
458 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
459 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
460 { {"retain-symbols-file", required_argument, NULL,
461 OPTION_RETAIN_SYMBOLS_FILE},
462 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
463 { {"rpath", required_argument, NULL, OPTION_RPATH},
464 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
465 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
466 '\0', N_("PATH"), N_("Set link time shared library search path"),
467 ONE_DASH },
468 { {"shared", no_argument, NULL, OPTION_SHARED},
469 '\0', NULL, N_("Create a shared library"), ONE_DASH },
470 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
471 '\0', NULL, NULL, ONE_DASH },
472 { {"pie", no_argument, NULL, OPTION_PIE},
473 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
474 { {"pic-executable", no_argument, NULL, OPTION_PIE},
475 '\0', NULL, NULL, TWO_DASHES },
476 { {"no-pie", no_argument, NULL, OPTION_NO_PIE},
477 '\0', NULL, N_("Create a position dependent executable (default)"), ONE_DASH },
478 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
479 '\0', N_("[=ascending|descending]"),
480 N_("Sort common symbols by alignment [in specified order]"),
481 TWO_DASHES },
482 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
483 '\0', NULL, NULL, NO_HELP },
484 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
485 '\0', N_("name|alignment"),
486 N_("Sort sections by name or maximum alignment"), TWO_DASHES },
487 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
488 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
489 TWO_DASHES },
490 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
491 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
492 TWO_DASHES },
493 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
494 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
495 TWO_DASHES },
496 { {"stats", no_argument, NULL, OPTION_STATS},
497 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
498 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
499 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
500 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
501 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
502 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
503 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
504 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
505 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
506 TWO_DASHES },
507 { {"Tbss", required_argument, NULL, OPTION_TBSS},
508 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
509 { {"Tdata", required_argument, NULL, OPTION_TDATA},
510 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
511 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
512 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
513 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
514 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
515 { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT},
516 '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH },
517 { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT},
518 '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH },
519 { {"unresolved-symbols=<method>", required_argument, NULL,
520 OPTION_UNRESOLVED_SYMBOLS},
521 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
522 " ignore-all, report-all, ignore-in-object-files,\n"
523 " ignore-in-shared-libs"),
524 TWO_DASHES },
525 { {"verbose", optional_argument, NULL, OPTION_VERBOSE},
526 '\0', N_("[=NUMBER]"),
527 N_("Output lots of information during link"), TWO_DASHES },
528 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
529 '\0', NULL, NULL, NO_HELP },
530 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
531 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
532 { {"version-exports-section", required_argument, NULL,
533 OPTION_VERSION_EXPORTS_SECTION },
534 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
535 " SYMBOL as the version."),
536 TWO_DASHES },
537 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
538 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
539 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
540 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
541 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
542 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
543 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
544 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
545 { {"export-dynamic-symbol", required_argument, NULL, OPTION_EXPORT_DYNAMIC_SYMBOL},
546 '\0', N_("SYMBOL"), N_("Export the specified symbol"), EXACTLY_TWO_DASHES },
547 { {"export-dynamic-symbol-list", required_argument, NULL, OPTION_EXPORT_DYNAMIC_SYMBOL_LIST},
548 '\0', N_("FILE"), N_("Read export dynamic symbol list"), EXACTLY_TWO_DASHES },
549 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
550 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
551 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
552 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
553 TWO_DASHES },
554 { {"warn-execstack", no_argument, NULL, OPTION_WARN_EXECSTACK},
555 '\0', NULL, N_("Warn when creating an executable stack"), TWO_DASHES },
556 { {"no-warn-execstack", no_argument, NULL, OPTION_NO_WARN_EXECSTACK},
557 '\0', NULL, N_("Do not warn when creating an executable stack"), TWO_DASHES },
558 { {"warn-rwx-segments", no_argument, NULL, OPTION_WARN_RWX_SEGMENTS},
559 '\0', NULL, N_("Warn when creating executable segments"), TWO_DASHES },
560 { {"no-warn-rwx-segments", no_argument, NULL, OPTION_NO_WARN_RWX_SEGMENTS},
561 '\0', NULL, N_("Do not warn when creating executable segments"), TWO_DASHES },
562 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
563 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
564 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
565 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
566 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
567 '\0', NULL, N_("Warn if start of section changes due to alignment"),
568 TWO_DASHES },
569 { {"warn-textrel", no_argument, NULL, OPTION_WARN_TEXTREL},
570 '\0', NULL,
571 #if DEFAULT_LD_TEXTREL_CHECK_WARNING
572 N_("Warn if output has DT_TEXTREL (default)"),
573 #else
574 N_("Warn if output has DT_TEXTREL"),
575 #endif
576 TWO_DASHES },
577 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_TEXTREL},
578 '\0', NULL, NULL, NO_HELP },
579 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
580 '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
581 TWO_DASHES },
582 { {"warn-unresolved-symbols", no_argument, NULL,
583 OPTION_WARN_UNRESOLVED_SYMBOLS},
584 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
585 { {"error-unresolved-symbols", no_argument, NULL,
586 OPTION_ERROR_UNRESOLVED_SYMBOLS},
587 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
588 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
589 '\0', NULL, N_("Include all objects from following archives"),
590 TWO_DASHES },
591 { {"wrap", required_argument, NULL, OPTION_WRAP},
592 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
593 { {"ignore-unresolved-symbol", required_argument, NULL,
594 OPTION_IGNORE_UNRESOLVED_SYMBOL},
595 '\0', N_("SYMBOL"),
596 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES },
597 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE},
598 '\0', NULL, N_("Push state of flags governing input file handling"),
599 TWO_DASHES },
600 { {"pop-state", no_argument, NULL, OPTION_POP_STATE},
601 '\0', NULL, N_("Pop state of flags governing input file handling"),
602 TWO_DASHES },
603 { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE},
604 '\0', NULL, N_("Report target memory usage"), TWO_DASHES },
605 { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING},
606 '\0', N_("=MODE"), N_("Control how orphan sections are handled."),
607 TWO_DASHES },
608 { {"print-map-discarded", no_argument, NULL, OPTION_PRINT_MAP_DISCARDED},
609 '\0', NULL, N_("Show discarded sections in map file output (default)"),
610 TWO_DASHES },
611 { {"no-print-map-discarded", no_argument, NULL, OPTION_NO_PRINT_MAP_DISCARDED},
612 '\0', NULL, N_("Do not show discarded sections in map file output"),
613 TWO_DASHES },
614 { {"print-map-locals", no_argument, NULL, OPTION_PRINT_MAP_LOCALS},
615 '\0', NULL, N_("Show local symbols in map file output"),
616 TWO_DASHES },
617 { {"no-print-map-locals", no_argument, NULL, OPTION_NO_PRINT_MAP_LOCALS},
618 '\0', NULL, N_("Do not show local symbols in map file output (default)"),
619 TWO_DASHES },
620 { {"ctf-variables", no_argument, NULL, OPTION_CTF_VARIABLES},
621 '\0', NULL, N_("Emit names and types of static variables in CTF"),
622 TWO_DASHES },
623 { {"no-ctf-variables", no_argument, NULL, OPTION_NO_CTF_VARIABLES},
624 '\0', NULL, N_("Do not emit names and types of static variables in CTF"),
625 TWO_DASHES },
626 { {"ctf-share-types=<method>", required_argument, NULL,
627 OPTION_CTF_SHARE_TYPES},
628 '\0', NULL, N_("How to share CTF types between translation units.\n"
629 " <method> is: share-unconflicted (default),\n"
630 " share-duplicated"),
631 TWO_DASHES },
632 };
633
634 #define OPTION_COUNT ARRAY_SIZE (ld_options)
635
636 void
637 parse_args (unsigned argc, char **argv)
638 {
639 unsigned i;
640 int is, il, irl;
641 int ingroup = 0;
642 char *default_dirlist = NULL;
643 char *shortopts;
644 struct option *longopts;
645 struct option *really_longopts;
646 int last_optind;
647 enum symbolic_enum
648 {
649 symbolic_unset = 0,
650 symbolic,
651 symbolic_functions,
652 } opt_symbolic = symbolic_unset;
653 enum dynamic_list_enum
654 {
655 dynamic_list_unset = 0,
656 dynamic_list_data,
657 dynamic_list
658 } opt_dynamic_list = dynamic_list_unset;
659 struct bfd_elf_dynamic_list *export_list = NULL;
660
661 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
662 longopts = (struct option *)
663 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
664 really_longopts = (struct option *)
665 xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
666
667 /* Starting the short option string with '-' is for programs that
668 expect options and other ARGV-elements in any order and that care about
669 the ordering of the two. We describe each non-option ARGV-element
670 as if it were the argument of an option with character code 1. */
671 shortopts[0] = '-';
672 is = 1;
673 il = 0;
674 irl = 0;
675 for (i = 0; i < OPTION_COUNT; i++)
676 {
677 if (ld_options[i].shortopt != '\0')
678 {
679 shortopts[is] = ld_options[i].shortopt;
680 ++is;
681 if (ld_options[i].opt.has_arg == required_argument
682 || ld_options[i].opt.has_arg == optional_argument)
683 {
684 shortopts[is] = ':';
685 ++is;
686 if (ld_options[i].opt.has_arg == optional_argument)
687 {
688 shortopts[is] = ':';
689 ++is;
690 }
691 }
692 }
693 if (ld_options[i].opt.name != NULL)
694 {
695 if (ld_options[i].control == EXACTLY_TWO_DASHES)
696 {
697 really_longopts[irl] = ld_options[i].opt;
698 ++irl;
699 }
700 else
701 {
702 longopts[il] = ld_options[i].opt;
703 ++il;
704 }
705 }
706 }
707 shortopts[is] = '\0';
708 longopts[il].name = NULL;
709 really_longopts[irl].name = NULL;
710
711 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
712
713 /* The -G option is ambiguous on different platforms. Sometimes it
714 specifies the largest data size to put into the small data
715 section. Sometimes it is equivalent to --shared. Unfortunately,
716 the first form takes an argument, while the second does not.
717
718 We need to permit the --shared form because on some platforms,
719 such as Solaris, gcc -shared will pass -G to the linker.
720
721 To permit either usage, we look through the argument list. If we
722 find -G not followed by a number, we change it into --shared.
723 This will work for most normal cases. */
724 for (i = 1; i < argc; i++)
725 if (strcmp (argv[i], "-G") == 0
726 && (i + 1 >= argc
727 || ! ISDIGIT (argv[i + 1][0])))
728 argv[i] = (char *) "--shared";
729
730 /* Because we permit long options to start with a single dash, and
731 we have a --library option, and the -l option is conventionally
732 used with an immediately following argument, we can have bad
733 results if somebody tries to use -l with a library whose name
734 happens to start with "ibrary", as in -li. We avoid problems by
735 simply turning -l into --library. This means that users will
736 have to use two dashes in order to use --library, which is OK
737 since that's how it is documented.
738
739 FIXME: It's possible that this problem can arise for other short
740 options as well, although the user does always have the recourse
741 of adding a space between the option and the argument. */
742 for (i = 1; i < argc; i++)
743 {
744 if (argv[i][0] == '-'
745 && argv[i][1] == 'l'
746 && argv[i][2] != '\0')
747 {
748 char *n;
749
750 n = (char *) xmalloc (strlen (argv[i]) + 20);
751 sprintf (n, "--library=%s", argv[i] + 2);
752 argv[i] = n;
753 }
754 }
755
756 last_optind = -1;
757 while (1)
758 {
759 int longind = 0;
760 int optc;
761 static unsigned int defsym_count;
762
763 /* Using last_optind lets us avoid calling ldemul_parse_args
764 multiple times on a single option, which would lead to
765 confusion in the internal static variables maintained by
766 getopt. This could otherwise happen for an argument like
767 -nx, in which the -n is parsed as a single option, and we
768 loop around to pick up the -x. */
769 if (optind != last_optind)
770 if (ldemul_parse_args (argc, argv))
771 continue;
772
773 /* getopt_long_only is like getopt_long, but '-' as well as '--'
774 can indicate a long option. */
775 opterr = 0;
776 last_optind = optind;
777 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
778 if (optc == '?')
779 {
780 optind = last_optind;
781 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
782 }
783 /* Attempt to detect grouped short options, eg: "-non-start".
784 Accepting such options is error prone as it is not clear if the user
785 intended "-n -o n-start" or "--non-start". */
786 else if (longind == 0 /* This is a short option. */
787 && optc > 32 /* It is a valid option. */
788 /* The character is not the second character of argv[last_optind]. */
789 && optc != argv[last_optind][1])
790 {
791 if (optarg)
792 einfo (_("%F%P: Error: unable to disambiguate: %s (did you mean -%s ?)\n"),
793 argv[last_optind], argv[last_optind]);
794 else
795 einfo (_("%P: Warning: grouped short command line options are deprecated: %s\n"), argv[last_optind]);
796 }
797
798 if (ldemul_handle_option (optc))
799 continue;
800
801 if (optc == -1)
802 break;
803
804 switch (optc)
805 {
806 case '?':
807 {
808 /* If the last word on the command line is an option that
809 requires an argument, getopt will refuse to recognise it.
810 Try to catch such options here and issue a more helpful
811 error message than just "unrecognized option". */
812 int opt;
813
814 for (opt = ARRAY_SIZE (ld_options); opt--;)
815 if (ld_options[opt].opt.has_arg == required_argument
816 /* FIXME: There are a few short options that do not
817 have long equivalents, but which require arguments.
818 We should handle them too. */
819 && ld_options[opt].opt.name != NULL
820 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0)
821 {
822 einfo (_("%P: %s: missing argument\n"), argv[last_optind]);
823 break;
824 }
825
826 if (opt == -1)
827 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
828 }
829 /* Fall through. */
830
831 default:
832 einfo (_("%F%P: use the --help option for usage information\n"));
833 break;
834
835 case 1: /* File name. */
836 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
837 break;
838
839 case OPTION_IGNORE:
840 break;
841 case 'a':
842 /* For HP/UX compatibility. Actually -a shared should mean
843 ``use only shared libraries'' but, then, we don't
844 currently support shared libraries on HP/UX anyhow. */
845 if (strcmp (optarg, "archive") == 0)
846 input_flags.dynamic = false;
847 else if (strcmp (optarg, "shared") == 0
848 || strcmp (optarg, "default") == 0)
849 input_flags.dynamic = true;
850 else
851 einfo (_("%F%P: unrecognized -a option `%s'\n"), optarg);
852 break;
853 case OPTION_ASSERT:
854 /* FIXME: We just ignore these, but we should handle them. */
855 if (strcmp (optarg, "definitions") == 0)
856 ;
857 else if (strcmp (optarg, "nodefinitions") == 0)
858 ;
859 else if (strcmp (optarg, "nosymbolic") == 0)
860 ;
861 else if (strcmp (optarg, "pure-text") == 0)
862 ;
863 else
864 einfo (_("%F%P: unrecognized -assert option `%s'\n"), optarg);
865 break;
866 case 'A':
867 ldfile_add_arch (optarg);
868 break;
869 case 'b':
870 lang_add_target (optarg);
871 break;
872 case 'c':
873 ldfile_open_command_file (optarg);
874 parser_input = input_mri_script;
875 yyparse ();
876 break;
877 case OPTION_CALL_SHARED:
878 input_flags.dynamic = true;
879 break;
880 case OPTION_NON_SHARED:
881 input_flags.dynamic = false;
882 break;
883 case OPTION_CREF:
884 command_line.cref = true;
885 link_info.notice_all = true;
886 break;
887 case 'd':
888 command_line.force_common_definition = true;
889 break;
890 case OPTION_FORCE_GROUP_ALLOCATION:
891 command_line.force_group_allocation = true;
892 break;
893 case OPTION_DEFSYM:
894 lex_string = optarg;
895 lex_redirect (optarg, "--defsym", ++defsym_count);
896 parser_input = input_defsym;
897 yyparse ();
898 lex_string = NULL;
899 break;
900 case OPTION_DEMANGLE:
901 demangling = true;
902 if (optarg != NULL)
903 {
904 enum demangling_styles style;
905
906 style = cplus_demangle_name_to_style (optarg);
907 if (style == unknown_demangling)
908 einfo (_("%F%P: unknown demangling style `%s'\n"),
909 optarg);
910
911 cplus_demangle_set_style (style);
912 }
913 break;
914 case 'I': /* Used on Solaris. */
915 case OPTION_DYNAMIC_LINKER:
916 command_line.interpreter = optarg;
917 link_info.nointerp = 0;
918 break;
919 case OPTION_NO_DYNAMIC_LINKER:
920 link_info.nointerp = 1;
921 break;
922 case OPTION_SYSROOT:
923 /* Already handled in ldmain.c. */
924 break;
925 case OPTION_EB:
926 command_line.endian = ENDIAN_BIG;
927 break;
928 case OPTION_EL:
929 command_line.endian = ENDIAN_LITTLE;
930 break;
931 case OPTION_EMBEDDED_RELOCS:
932 command_line.embedded_relocs = true;
933 break;
934 case OPTION_EXPORT_DYNAMIC:
935 case 'E': /* HP/UX compatibility. */
936 link_info.export_dynamic = true;
937 break;
938 case OPTION_NO_EXPORT_DYNAMIC:
939 link_info.export_dynamic = false;
940 break;
941 case OPTION_NON_CONTIGUOUS_REGIONS:
942 link_info.non_contiguous_regions = true;
943 break;
944 case OPTION_NON_CONTIGUOUS_REGIONS_WARNINGS:
945 link_info.non_contiguous_regions_warnings = true;
946 break;
947 case OPTION_WARN_EXECSTACK:
948 link_info.warn_execstack = 1;
949 break;
950 case OPTION_NO_WARN_EXECSTACK:
951 link_info.warn_execstack = 0;
952 break;
953 case OPTION_WARN_RWX_SEGMENTS:
954 link_info.no_warn_rwx_segments = 0;
955 link_info.user_warn_rwx_segments = 1;
956 break;
957 case OPTION_NO_WARN_RWX_SEGMENTS:
958 link_info.no_warn_rwx_segments = 1;
959 link_info.user_warn_rwx_segments = 1;
960 break;
961 case 'e':
962 lang_add_entry (optarg, true);
963 break;
964 case 'f':
965 if (command_line.auxiliary_filters == NULL)
966 {
967 command_line.auxiliary_filters = (char **)
968 xmalloc (2 * sizeof (char *));
969 command_line.auxiliary_filters[0] = optarg;
970 command_line.auxiliary_filters[1] = NULL;
971 }
972 else
973 {
974 int c;
975 char **p;
976
977 c = 0;
978 for (p = command_line.auxiliary_filters; *p != NULL; p++)
979 ++c;
980 command_line.auxiliary_filters = (char **)
981 xrealloc (command_line.auxiliary_filters,
982 (c + 2) * sizeof (char *));
983 command_line.auxiliary_filters[c] = optarg;
984 command_line.auxiliary_filters[c + 1] = NULL;
985 }
986 break;
987 case 'F':
988 command_line.filter_shlib = optarg;
989 break;
990 case OPTION_FORCE_EXE_SUFFIX:
991 command_line.force_exe_suffix = true;
992 break;
993 case 'G':
994 {
995 char *end;
996 g_switch_value = strtoul (optarg, &end, 0);
997 if (*end)
998 einfo (_("%F%P: invalid number `%s'\n"), optarg);
999 }
1000 break;
1001 case 'g':
1002 /* Ignore. */
1003 break;
1004 case OPTION_GC_SECTIONS:
1005 link_info.gc_sections = true;
1006 break;
1007 case OPTION_PRINT_GC_SECTIONS:
1008 link_info.print_gc_sections = true;
1009 break;
1010 case OPTION_GC_KEEP_EXPORTED:
1011 link_info.gc_keep_exported = true;
1012 break;
1013 case OPTION_HELP:
1014 help ();
1015 xexit (0);
1016 break;
1017 case 'L':
1018 ldfile_add_library_path (optarg, true);
1019 break;
1020 case 'l':
1021 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
1022 break;
1023 case 'M':
1024 config.map_filename = "-";
1025 break;
1026 case 'm':
1027 /* Ignore. Was handled in a pre-parse. */
1028 break;
1029 case OPTION_MAP:
1030 config.map_filename = optarg;
1031 break;
1032 case 'N':
1033 config.text_read_only = false;
1034 config.magic_demand_paged = false;
1035 input_flags.dynamic = false;
1036 break;
1037 case OPTION_NO_OMAGIC:
1038 config.text_read_only = true;
1039 config.magic_demand_paged = true;
1040 /* NB/ Does not set input_flags.dynamic to TRUE.
1041 Use --call-shared or -Bdynamic for this. */
1042 break;
1043 case 'n':
1044 config.text_read_only = true;
1045 config.magic_demand_paged = false;
1046 input_flags.dynamic = false;
1047 break;
1048 case OPTION_NO_DEFINE_COMMON:
1049 link_info.inhibit_common_definition = true;
1050 break;
1051 case OPTION_NO_DEMANGLE:
1052 demangling = false;
1053 break;
1054 case OPTION_NO_GC_SECTIONS:
1055 link_info.gc_sections = false;
1056 break;
1057 case OPTION_NO_PRINT_GC_SECTIONS:
1058 link_info.print_gc_sections = false;
1059 break;
1060 case OPTION_NO_KEEP_MEMORY:
1061 link_info.keep_memory = false;
1062 break;
1063 case OPTION_NO_UNDEFINED:
1064 link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
1065 break;
1066 case OPTION_ALLOW_SHLIB_UNDEFINED:
1067 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1068 break;
1069 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
1070 link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
1071 break;
1072 case OPTION_UNRESOLVED_SYMBOLS:
1073 if (strcmp (optarg, "ignore-all") == 0)
1074 {
1075 link_info.unresolved_syms_in_objects = RM_IGNORE;
1076 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1077 }
1078 else if (strcmp (optarg, "report-all") == 0)
1079 {
1080 link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
1081 link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
1082 }
1083 else if (strcmp (optarg, "ignore-in-object-files") == 0)
1084 {
1085 link_info.unresolved_syms_in_objects = RM_IGNORE;
1086 link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
1087 }
1088 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
1089 {
1090 link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
1091 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1092 }
1093 else
1094 einfo (_("%F%P: bad --unresolved-symbols option: %s\n"), optarg);
1095 break;
1096 case OPTION_WARN_UNRESOLVED_SYMBOLS:
1097 link_info.warn_unresolved_syms = true;
1098 break;
1099 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
1100 link_info.warn_unresolved_syms = false;
1101 break;
1102 case OPTION_ALLOW_MULTIPLE_DEFINITION:
1103 link_info.allow_multiple_definition = true;
1104 break;
1105
1106 #if SUPPORT_ERROR_HANDLING_SCRIPT
1107 case OPTION_ERROR_HANDLING_SCRIPT:
1108 /* FIXME: Should we warn if the script is being overridden by another ?
1109 Or maybe they should be chained together ? */
1110 error_handling_script = optarg;
1111 break;
1112 #endif
1113
1114 case OPTION_ENABLE_LINKER_VERSION:
1115 enable_linker_version = true;
1116 break;
1117 case OPTION_DISABLE_LINKER_VERSION:
1118 enable_linker_version = false;
1119 break;
1120
1121 case OPTION_UNDEFINED_VERSION:
1122 link_info.allow_undefined_version = true;
1123 break;
1124 case OPTION_NO_UNDEFINED_VERSION:
1125 link_info.allow_undefined_version = false;
1126 break;
1127 case OPTION_DEFAULT_SYMVER:
1128 link_info.create_default_symver = true;
1129 break;
1130 case OPTION_DEFAULT_IMPORTED_SYMVER:
1131 link_info.default_imported_symver = true;
1132 break;
1133 case OPTION_NO_WARN_MISMATCH:
1134 command_line.warn_mismatch = false;
1135 break;
1136 case OPTION_NO_WARN_SEARCH_MISMATCH:
1137 command_line.warn_search_mismatch = false;
1138 break;
1139 case OPTION_NOINHIBIT_EXEC:
1140 force_make_executable = true;
1141 break;
1142 case OPTION_NOSTDLIB:
1143 config.only_cmd_line_lib_dirs = true;
1144 break;
1145 case OPTION_NO_WHOLE_ARCHIVE:
1146 input_flags.whole_archive = false;
1147 break;
1148 case 'O':
1149 /* FIXME "-O<non-digits> <value>" used to set the address of
1150 section <non-digits>. Was this for compatibility with
1151 something, or can we create a new option to do that
1152 (with a syntax similar to -defsym)?
1153 getopt can't handle two args to an option without kludges. */
1154
1155 /* Enable optimizations of output files. */
1156 link_info.optimize = strtoul (optarg, NULL, 0) != 0;
1157 break;
1158 case 'o':
1159 lang_add_output (optarg, 0);
1160 break;
1161 case OPTION_OFORMAT:
1162 lang_add_output_format (optarg, NULL, NULL, 0);
1163 break;
1164 case OPTION_OUT_IMPLIB:
1165 command_line.out_implib_filename = xstrdup (optarg);
1166 break;
1167 case OPTION_PRINT_SYSROOT:
1168 if (*ld_sysroot)
1169 puts (ld_sysroot);
1170 xexit (0);
1171 break;
1172 case OPTION_PRINT_OUTPUT_FORMAT:
1173 command_line.print_output_format = true;
1174 break;
1175 #if BFD_SUPPORTS_PLUGINS
1176 case OPTION_PLUGIN:
1177 plugin_opt_plugin (optarg);
1178 break;
1179 case OPTION_PLUGIN_OPT:
1180 if (plugin_opt_plugin_arg (optarg))
1181 einfo (_("%F%P: bad -plugin-opt option\n"));
1182 break;
1183 #endif /* BFD_SUPPORTS_PLUGINS */
1184 case 'q':
1185 link_info.emitrelocations = true;
1186 break;
1187 case 'i':
1188 case 'r':
1189 if (optind == last_optind)
1190 /* This can happen if the user put "-rpath,a" on the command
1191 line. (Or something similar. The comma is important).
1192 Getopt becomes confused and thinks that this is a -r option
1193 but it cannot parse the text after the -r so it refuses to
1194 increment the optind counter. Detect this case and issue
1195 an error message here. We cannot just make this a warning,
1196 increment optind, and continue because getopt is too confused
1197 and will seg-fault the next time around. */
1198 einfo(_("%F%P: unrecognised option: %s\n"), argv[optind]);
1199
1200 if (bfd_link_pic (&link_info))
1201 einfo (_("%F%P: -r and %s may not be used together\n"),
1202 bfd_link_dll (&link_info) ? "-shared" : "-pie");
1203
1204 link_info.type = type_relocatable;
1205 config.build_constructors = false;
1206 config.magic_demand_paged = false;
1207 config.text_read_only = false;
1208 input_flags.dynamic = false;
1209 break;
1210 case 'R':
1211 /* The GNU linker traditionally uses -R to mean to include
1212 only the symbols from a file. The Solaris linker uses -R
1213 to set the path used by the runtime linker to find
1214 libraries. This is the GNU linker -rpath argument. We
1215 try to support both simultaneously by checking the file
1216 named. If it is a directory, rather than a regular file,
1217 we assume -rpath was meant. */
1218 {
1219 struct stat s;
1220
1221 if (stat (optarg, &s) >= 0
1222 && ! S_ISDIR (s.st_mode))
1223 {
1224 lang_add_input_file (optarg,
1225 lang_input_file_is_symbols_only_enum,
1226 NULL);
1227 break;
1228 }
1229 }
1230 /* Fall through. */
1231 case OPTION_RPATH:
1232 if (command_line.rpath == NULL)
1233 command_line.rpath = xstrdup (optarg);
1234 else
1235 {
1236 size_t rpath_len = strlen (command_line.rpath);
1237 size_t optarg_len = strlen (optarg);
1238 char *buf;
1239 char *cp = command_line.rpath;
1240
1241 /* First see whether OPTARG is already in the path. */
1242 do
1243 {
1244 if (strncmp (optarg, cp, optarg_len) == 0
1245 && (cp[optarg_len] == 0
1246 || cp[optarg_len] == config.rpath_separator))
1247 /* We found it. */
1248 break;
1249
1250 /* Not yet found. */
1251 cp = strchr (cp, config.rpath_separator);
1252 if (cp != NULL)
1253 ++cp;
1254 }
1255 while (cp != NULL);
1256
1257 if (cp == NULL)
1258 {
1259 buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1260 sprintf (buf, "%s%c%s", command_line.rpath,
1261 config.rpath_separator, optarg);
1262 free (command_line.rpath);
1263 command_line.rpath = buf;
1264 }
1265 }
1266 break;
1267 case OPTION_RPATH_LINK:
1268 if (command_line.rpath_link == NULL)
1269 command_line.rpath_link = xstrdup (optarg);
1270 else
1271 {
1272 char *buf;
1273
1274 buf = (char *) xmalloc (strlen (command_line.rpath_link)
1275 + strlen (optarg)
1276 + 2);
1277 sprintf (buf, "%s%c%s", command_line.rpath_link,
1278 config.rpath_separator, optarg);
1279 free (command_line.rpath_link);
1280 command_line.rpath_link = buf;
1281 }
1282 break;
1283 case OPTION_NO_RELAX:
1284 DISABLE_RELAXATION;
1285 break;
1286 case OPTION_RELAX:
1287 ENABLE_RELAXATION;
1288 break;
1289 case OPTION_RETAIN_SYMBOLS_FILE:
1290 add_keepsyms_file (optarg);
1291 break;
1292 case 'S':
1293 link_info.strip = strip_debugger;
1294 break;
1295 case 's':
1296 link_info.strip = strip_all;
1297 break;
1298 case OPTION_STRIP_DISCARDED:
1299 link_info.strip_discarded = true;
1300 break;
1301 case OPTION_NO_STRIP_DISCARDED:
1302 link_info.strip_discarded = false;
1303 break;
1304 case OPTION_DISABLE_MULTIPLE_DEFS_ABS:
1305 link_info.prohibit_multiple_definition_absolute = true;
1306 break;
1307 case OPTION_SHARED:
1308 if (config.has_shared)
1309 {
1310 if (bfd_link_relocatable (&link_info))
1311 einfo (_("%F%P: -r and %s may not be used together\n"),
1312 "-shared");
1313
1314 link_info.type = type_dll;
1315 /* When creating a shared library, the default
1316 behaviour is to ignore any unresolved references. */
1317 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1318 link_info.unresolved_syms_in_objects = RM_IGNORE;
1319 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1320 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1321 }
1322 else
1323 einfo (_("%F%P: -shared not supported\n"));
1324 break;
1325 case OPTION_NO_PIE:
1326 link_info.type = type_pde;
1327 break;
1328 case OPTION_PIE:
1329 if (config.has_shared)
1330 {
1331 if (bfd_link_relocatable (&link_info))
1332 einfo (_("%F%P: -r and %s may not be used together\n"), "-pie");
1333
1334 link_info.type = type_pie;
1335 }
1336 else
1337 einfo (_("%F%P: -pie not supported\n"));
1338 break;
1339 case 'h': /* Used on Solaris. */
1340 case OPTION_SONAME:
1341 if (optarg[0] == '\0' && command_line.soname
1342 && command_line.soname[0])
1343 einfo (_("%P: SONAME must not be empty string; keeping previous one\n"));
1344 else
1345 command_line.soname = optarg;
1346 break;
1347 case OPTION_SORT_COMMON:
1348 if (optarg == NULL
1349 || strcmp (optarg, N_("descending")) == 0)
1350 config.sort_common = sort_descending;
1351 else if (strcmp (optarg, N_("ascending")) == 0)
1352 config.sort_common = sort_ascending;
1353 else
1354 einfo (_("%F%P: invalid common section sorting option: %s\n"),
1355 optarg);
1356 break;
1357 case OPTION_SORT_SECTION:
1358 if (strcmp (optarg, N_("name")) == 0)
1359 sort_section = by_name;
1360 else if (strcmp (optarg, N_("alignment")) == 0)
1361 sort_section = by_alignment;
1362 else
1363 einfo (_("%F%P: invalid section sorting option: %s\n"),
1364 optarg);
1365 break;
1366 case OPTION_STATS:
1367 config.stats = true;
1368 break;
1369 case OPTION_NO_SYMBOLIC:
1370 opt_symbolic = symbolic_unset;
1371 break;
1372 case OPTION_SYMBOLIC:
1373 opt_symbolic = symbolic;
1374 break;
1375 case OPTION_SYMBOLIC_FUNCTIONS:
1376 opt_symbolic = symbolic_functions;
1377 break;
1378 case 't':
1379 ++trace_files;
1380 break;
1381 case 'T':
1382 previous_script_handle = saved_script_handle;
1383 ldfile_open_script_file (optarg);
1384 parser_input = input_script;
1385 yyparse ();
1386 previous_script_handle = NULL;
1387 break;
1388 case OPTION_DEFAULT_SCRIPT:
1389 command_line.default_script = optarg;
1390 break;
1391 case OPTION_SECTION_START:
1392 {
1393 char *optarg2;
1394 char *sec_name;
1395 int len;
1396
1397 /* Check for <something>=<somthing>... */
1398 optarg2 = strchr (optarg, '=');
1399 if (optarg2 == NULL)
1400 einfo (_("%F%P: invalid argument to option"
1401 " \"--section-start\"\n"));
1402
1403 optarg2++;
1404
1405 /* So far so good. Are all the args present? */
1406 if ((*optarg == '\0') || (*optarg2 == '\0'))
1407 einfo (_("%F%P: missing argument(s) to option"
1408 " \"--section-start\"\n"));
1409
1410 /* We must copy the section name as set_section_start
1411 doesn't do it for us. */
1412 len = optarg2 - optarg;
1413 sec_name = (char *) xmalloc (len);
1414 memcpy (sec_name, optarg, len - 1);
1415 sec_name[len - 1] = 0;
1416
1417 /* Then set it... */
1418 set_section_start (sec_name, optarg2);
1419 }
1420 break;
1421 case OPTION_TARGET_HELP:
1422 /* Mention any target specific options. */
1423 ldemul_list_emulation_options (stdout);
1424 exit (0);
1425 case OPTION_TBSS:
1426 set_segment_start (".bss", optarg);
1427 break;
1428 case OPTION_TDATA:
1429 set_segment_start (".data", optarg);
1430 break;
1431 case OPTION_TTEXT:
1432 set_segment_start (".text", optarg);
1433 break;
1434 case OPTION_TTEXT_SEGMENT:
1435 set_segment_start (".text-segment", optarg);
1436 break;
1437 case OPTION_TRODATA_SEGMENT:
1438 set_segment_start (".rodata-segment", optarg);
1439 break;
1440 case OPTION_TLDATA_SEGMENT:
1441 set_segment_start (".ldata-segment", optarg);
1442 break;
1443 case OPTION_TRADITIONAL_FORMAT:
1444 link_info.traditional_format = true;
1445 break;
1446 case OPTION_TASK_LINK:
1447 link_info.task_link = true;
1448 /* Fall through. */
1449 case OPTION_UR:
1450 if (bfd_link_pic (&link_info))
1451 einfo (_("%F%P: -r and %s may not be used together\n"),
1452 bfd_link_dll (&link_info) ? "-shared" : "-pie");
1453
1454 link_info.type = type_relocatable;
1455 config.build_constructors = true;
1456 config.magic_demand_paged = false;
1457 config.text_read_only = false;
1458 input_flags.dynamic = false;
1459 break;
1460 case 'u':
1461 ldlang_add_undef (optarg, true);
1462 break;
1463 case OPTION_REQUIRE_DEFINED_SYMBOL:
1464 ldlang_add_require_defined (optarg);
1465 break;
1466 case OPTION_UNIQUE:
1467 if (optarg != NULL)
1468 lang_add_unique (optarg);
1469 else
1470 config.unique_orphan_sections = true;
1471 break;
1472 case OPTION_VERBOSE:
1473 ldversion (1);
1474 version_printed = true;
1475 verbose = true;
1476 overflow_cutoff_limit = -2;
1477 if (optarg != NULL)
1478 {
1479 char *end;
1480 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1481 if (*end)
1482 einfo (_("%F%P: invalid number `%s'\n"), optarg);
1483 #if BFD_SUPPORTS_PLUGINS
1484 report_plugin_symbols = level > 1;
1485 #endif /* BFD_SUPPORTS_PLUGINS */
1486 }
1487 break;
1488 case 'v':
1489 ldversion (0);
1490 version_printed = true;
1491 break;
1492 case 'V':
1493 ldversion (1);
1494 version_printed = true;
1495 break;
1496 case OPTION_VERSION:
1497 ldversion (2);
1498 xexit (0);
1499 break;
1500 case OPTION_VERSION_SCRIPT:
1501 /* This option indicates a small script that only specifies
1502 version information. Read it, but don't assume that
1503 we've seen a linker script. */
1504 {
1505 FILE *hold_script_handle;
1506
1507 hold_script_handle = saved_script_handle;
1508 ldfile_open_command_file (optarg);
1509 saved_script_handle = hold_script_handle;
1510 parser_input = input_version_script;
1511 yyparse ();
1512 }
1513 break;
1514 case OPTION_VERSION_EXPORTS_SECTION:
1515 /* This option records a version symbol to be applied to the
1516 symbols listed for export to be found in the object files
1517 .exports sections. */
1518 command_line.version_exports_section = optarg;
1519 break;
1520 case OPTION_DYNAMIC_LIST_DATA:
1521 opt_dynamic_list = dynamic_list_data;
1522 break;
1523 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1524 lang_append_dynamic_list_cpp_typeinfo ();
1525 if (opt_dynamic_list != dynamic_list_data)
1526 opt_dynamic_list = dynamic_list;
1527 break;
1528 case OPTION_DYNAMIC_LIST_CPP_NEW:
1529 lang_append_dynamic_list_cpp_new ();
1530 if (opt_dynamic_list != dynamic_list_data)
1531 opt_dynamic_list = dynamic_list;
1532 break;
1533 case OPTION_DYNAMIC_LIST:
1534 /* This option indicates a small script that only specifies
1535 a dynamic list. Read it, but don't assume that we've
1536 seen a linker script. */
1537 {
1538 FILE *hold_script_handle;
1539
1540 hold_script_handle = saved_script_handle;
1541 ldfile_open_command_file (optarg);
1542 saved_script_handle = hold_script_handle;
1543 parser_input = input_dynamic_list;
1544 current_dynamic_list_p = &link_info.dynamic_list;
1545 yyparse ();
1546 }
1547 if (opt_dynamic_list != dynamic_list_data)
1548 opt_dynamic_list = dynamic_list;
1549 break;
1550 case OPTION_EXPORT_DYNAMIC_SYMBOL:
1551 {
1552 struct bfd_elf_version_expr *expr
1553 = lang_new_vers_pattern (NULL, xstrdup (optarg), NULL,
1554 false);
1555 lang_append_dynamic_list (&export_list, expr);
1556 }
1557 break;
1558 case OPTION_EXPORT_DYNAMIC_SYMBOL_LIST:
1559 /* This option indicates a small script that only specifies
1560 an export list. Read it, but don't assume that we've
1561 seen a linker script. */
1562 {
1563 FILE *hold_script_handle;
1564
1565 hold_script_handle = saved_script_handle;
1566 ldfile_open_command_file (optarg);
1567 saved_script_handle = hold_script_handle;
1568 parser_input = input_dynamic_list;
1569 current_dynamic_list_p = &export_list;
1570 yyparse ();
1571 }
1572 break;
1573 case OPTION_WARN_COMMON:
1574 config.warn_common = true;
1575 break;
1576 case OPTION_WARN_CONSTRUCTORS:
1577 config.warn_constructors = true;
1578 break;
1579 case OPTION_WARN_FATAL:
1580 config.fatal_warnings = true;
1581 break;
1582 case OPTION_NO_WARN_FATAL:
1583 config.fatal_warnings = false;
1584 break;
1585 case OPTION_NO_WARNINGS:
1586 case 'w':
1587 config.no_warnings = true;
1588 config.fatal_warnings = false;
1589 break;
1590 case OPTION_WARN_MULTIPLE_GP:
1591 config.warn_multiple_gp = true;
1592 break;
1593 case OPTION_WARN_ONCE:
1594 config.warn_once = true;
1595 break;
1596 case OPTION_WARN_SECTION_ALIGN:
1597 config.warn_section_align = true;
1598 break;
1599 case OPTION_WARN_TEXTREL:
1600 link_info.textrel_check = textrel_check_warning;
1601 break;
1602 case OPTION_WARN_ALTERNATE_EM:
1603 link_info.warn_alternate_em = true;
1604 break;
1605 case OPTION_WHOLE_ARCHIVE:
1606 input_flags.whole_archive = true;
1607 break;
1608 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1609 input_flags.add_DT_NEEDED_for_dynamic = true;
1610 break;
1611 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1612 input_flags.add_DT_NEEDED_for_dynamic = false;
1613 break;
1614 case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1615 input_flags.add_DT_NEEDED_for_regular = true;
1616 break;
1617 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1618 input_flags.add_DT_NEEDED_for_regular = false;
1619 break;
1620 case OPTION_WRAP:
1621 add_wrap (optarg);
1622 break;
1623 case OPTION_IGNORE_UNRESOLVED_SYMBOL:
1624 add_ignoresym (&link_info, optarg);
1625 break;
1626 case OPTION_DISCARD_NONE:
1627 link_info.discard = discard_none;
1628 break;
1629 case 'X':
1630 link_info.discard = discard_l;
1631 break;
1632 case 'x':
1633 link_info.discard = discard_all;
1634 break;
1635 case 'Y':
1636 if (startswith (optarg, "P,"))
1637 optarg += 2;
1638 free (default_dirlist);
1639 default_dirlist = xstrdup (optarg);
1640 break;
1641 case 'y':
1642 add_ysym (optarg);
1643 break;
1644 case OPTION_SPARE_DYNAMIC_TAGS:
1645 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1646 break;
1647 case OPTION_SPLIT_BY_RELOC:
1648 if (optarg != NULL)
1649 config.split_by_reloc = strtoul (optarg, NULL, 0);
1650 else
1651 config.split_by_reloc = 32768;
1652 break;
1653 case OPTION_SPLIT_BY_FILE:
1654 if (optarg != NULL)
1655 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1656 else
1657 config.split_by_file = 1;
1658 break;
1659 case OPTION_CHECK_SECTIONS:
1660 command_line.check_section_addresses = 1;
1661 break;
1662 case OPTION_NO_CHECK_SECTIONS:
1663 command_line.check_section_addresses = 0;
1664 break;
1665 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1666 command_line.accept_unknown_input_arch = true;
1667 break;
1668 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1669 command_line.accept_unknown_input_arch = false;
1670 break;
1671 case '(':
1672 lang_enter_group ();
1673 ingroup++;
1674 break;
1675 case ')':
1676 if (! ingroup)
1677 einfo (_("%F%P: group ended before it began (--help for usage)\n"));
1678
1679 lang_leave_group ();
1680 ingroup--;
1681 break;
1682
1683 case OPTION_INIT:
1684 link_info.init_function = optarg;
1685 break;
1686
1687 case OPTION_FINI:
1688 link_info.fini_function = optarg;
1689 break;
1690
1691 case OPTION_REMAP_INPUTS_FILE:
1692 if (! ldfile_add_remap_file (optarg))
1693 einfo (_("%F%P: failed to add remap file %s\n"), optarg);
1694 break;
1695
1696 case OPTION_REMAP_INPUTS:
1697 {
1698 char *optarg2 = strchr (optarg, '=');
1699 if (optarg2 == NULL)
1700 /* FIXME: Should we allow --remap-inputs=@myfile as a synonym
1701 for --remap-inputs-file=myfile ? */
1702 einfo (_("%F%P: invalid argument to option --remap-inputs\n"));
1703 size_t len = optarg2 - optarg;
1704 char * pattern = xmalloc (len + 1);
1705 memcpy (pattern, optarg, len);
1706 pattern[len] = 0;
1707 ldfile_add_remap (pattern, optarg2 + 1);
1708 free (pattern);
1709 }
1710 break;
1711
1712 case OPTION_REDUCE_MEMORY_OVERHEADS:
1713 link_info.reduce_memory_overheads = true;
1714 if (config.hash_table_size == 0)
1715 config.hash_table_size = 1021;
1716 break;
1717
1718 case OPTION_MAX_CACHE_SIZE:
1719 {
1720 char *end;
1721 bfd_size_type cache_size = strtoul (optarg, &end, 0);
1722 if (*end != '\0')
1723 einfo (_("%F%P: invalid cache memory size: %s\n"),
1724 optarg);
1725 link_info.max_cache_size = cache_size;
1726 }
1727 break;
1728
1729 case OPTION_HASH_SIZE:
1730 {
1731 bfd_size_type new_size;
1732
1733 new_size = strtoul (optarg, NULL, 0);
1734 if (new_size)
1735 config.hash_table_size = new_size;
1736 else
1737 einfo (_("%X%P: --hash-size needs a numeric argument\n"));
1738 }
1739 break;
1740
1741 case OPTION_PUSH_STATE:
1742 input_flags.pushed = xmemdup (&input_flags,
1743 sizeof (input_flags),
1744 sizeof (input_flags));
1745 break;
1746
1747 case OPTION_POP_STATE:
1748 if (input_flags.pushed == NULL)
1749 einfo (_("%F%P: no state pushed before popping\n"));
1750 else
1751 {
1752 struct lang_input_statement_flags *oldp = input_flags.pushed;
1753 memcpy (&input_flags, oldp, sizeof (input_flags));
1754 free (oldp);
1755 }
1756 break;
1757
1758 case OPTION_PRINT_MEMORY_USAGE:
1759 command_line.print_memory_usage = true;
1760 break;
1761
1762 case OPTION_ORPHAN_HANDLING:
1763 if (strcasecmp (optarg, "place") == 0)
1764 config.orphan_handling = orphan_handling_place;
1765 else if (strcasecmp (optarg, "warn") == 0)
1766 config.orphan_handling = orphan_handling_warn;
1767 else if (strcasecmp (optarg, "error") == 0)
1768 config.orphan_handling = orphan_handling_error;
1769 else if (strcasecmp (optarg, "discard") == 0)
1770 config.orphan_handling = orphan_handling_discard;
1771 else
1772 einfo (_("%F%P: invalid argument to option"
1773 " \"--orphan-handling\"\n"));
1774 break;
1775
1776 case OPTION_NO_PRINT_MAP_DISCARDED:
1777 config.print_map_discarded = false;
1778 break;
1779
1780 case OPTION_PRINT_MAP_DISCARDED:
1781 config.print_map_discarded = true;
1782 break;
1783
1784 case OPTION_NO_PRINT_MAP_LOCALS:
1785 config.print_map_locals = false;
1786 break;
1787
1788 case OPTION_PRINT_MAP_LOCALS:
1789 config.print_map_locals = true;
1790 break;
1791
1792 case OPTION_DEPENDENCY_FILE:
1793 config.dependency_file = optarg;
1794 break;
1795
1796 case OPTION_CTF_VARIABLES:
1797 config.ctf_variables = true;
1798 break;
1799
1800 case OPTION_NO_CTF_VARIABLES:
1801 config.ctf_variables = false;
1802 break;
1803
1804 case OPTION_CTF_SHARE_TYPES:
1805 if (strcmp (optarg, "share-unconflicted") == 0)
1806 config.ctf_share_duplicated = false;
1807 else if (strcmp (optarg, "share-duplicated") == 0)
1808 config.ctf_share_duplicated = true;
1809 else
1810 einfo (_("%F%P: bad --ctf-share-types option: %s\n"), optarg);
1811 break;
1812 }
1813 }
1814
1815 free (really_longopts);
1816 free (longopts);
1817 free (shortopts);
1818
1819 /* Run a couple of checks on the map filename. */
1820 if (config.map_filename)
1821 {
1822 char * new_name = NULL;
1823 char * percent;
1824 int res = 0;
1825
1826 if (config.map_filename[0] == 0)
1827 {
1828 einfo (_("%P: no file/directory name provided for map output; ignored\n"));
1829 config.map_filename = NULL;
1830 }
1831 else if (strcmp (config.map_filename, "-") == 0)
1832 ; /* Write to stdout. Handled in main(). */
1833 else if ((percent = strchr (config.map_filename, '%')) != NULL)
1834 {
1835 /* FIXME: Check for a second % character and issue an error ? */
1836
1837 /* Construct a map file by replacing the % character with the (full)
1838 output filename. If the % character was the last character in
1839 the original map filename then add a .map extension. */
1840 percent[0] = 0;
1841 res = asprintf (&new_name, "%s%s%s", config.map_filename,
1842 output_filename,
1843 percent[1] ? percent + 1 : ".map");
1844
1845 /* FIXME: Should we ensure that any directory components in new_name exist ? */
1846 }
1847 else
1848 {
1849 struct stat s;
1850
1851 /* If the map filename is actually a directory then create
1852 a file inside it, based upon the output filename. */
1853 if (stat (config.map_filename, &s) < 0)
1854 {
1855 if (errno != ENOENT)
1856 einfo (_("%P: cannot stat linker map file: %E\n"));
1857 }
1858 else if (S_ISDIR (s.st_mode))
1859 {
1860 char lastc = config.map_filename[strlen (config.map_filename) - 1];
1861 res = asprintf (&new_name, "%s%s%s.map",
1862 config.map_filename,
1863 IS_DIR_SEPARATOR (lastc) ? "" : "/",
1864 lbasename (output_filename));
1865 }
1866 else if (! S_ISREG (s.st_mode))
1867 {
1868 einfo (_("%P: linker map file is not a regular file\n"));
1869 config.map_filename = NULL;
1870 }
1871 /* else FIXME: Check write permission ? */
1872 }
1873
1874 if (res < 0)
1875 {
1876 /* If the asprintf failed then something is probably very
1877 wrong. Better to halt now rather than continue on
1878 into more problems. */
1879 einfo (_("%P%F: cannot create name for linker map file: %E\n"));
1880 }
1881 else if (new_name != NULL)
1882 {
1883 /* This is a trivial memory leak. */
1884 config.map_filename = new_name;
1885 }
1886 }
1887
1888 if (command_line.soname && command_line.soname[0] == '\0')
1889 {
1890 einfo (_("%P: SONAME must not be empty string; ignored\n"));
1891 command_line.soname = NULL;
1892 }
1893
1894 while (ingroup)
1895 {
1896 einfo (_("%P: missing --end-group; added as last command line option\n"));
1897 lang_leave_group ();
1898 ingroup--;
1899 }
1900
1901 if (default_dirlist != NULL)
1902 {
1903 set_default_dirlist (default_dirlist);
1904 free (default_dirlist);
1905 }
1906
1907 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1908 /* FIXME: Should we allow emulations a chance to set this ? */
1909 link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
1910
1911 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1912 /* FIXME: Should we allow emulations a chance to set this ? */
1913 link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
1914
1915 if (bfd_link_relocatable (&link_info)
1916 && command_line.check_section_addresses < 0)
1917 command_line.check_section_addresses = 0;
1918
1919 if (export_list)
1920 {
1921 struct bfd_elf_version_expr *head = export_list->head.list;
1922 struct bfd_elf_version_expr *next;
1923
1924 /* For --export-dynamic-symbol[-list]:
1925 1. When building executable, treat like --dynamic-list.
1926 2. When building shared object:
1927 a. If -Bsymbolic or --dynamic-list are used, treat like
1928 --dynamic-list.
1929 b. Otherwise, ignored.
1930 */
1931 if (!bfd_link_relocatable (&link_info)
1932 && (bfd_link_executable (&link_info)
1933 || opt_symbolic != symbolic_unset
1934 || opt_dynamic_list != dynamic_list_unset))
1935 {
1936 /* Append the export list to link_info.dynamic_list. */
1937 if (link_info.dynamic_list)
1938 {
1939 for (next = head; next->next != NULL; next = next->next)
1940 ;
1941 next->next = link_info.dynamic_list->head.list;
1942 link_info.dynamic_list->head.list = head;
1943 }
1944 else
1945 link_info.dynamic_list = export_list;
1946
1947 if (opt_dynamic_list != dynamic_list_data)
1948 opt_dynamic_list = dynamic_list;
1949 }
1950 else
1951 {
1952 /* Free the export list. */
1953 for (; head->next != NULL; head = next)
1954 {
1955 next = head->next;
1956 free (head);
1957 }
1958 free (export_list);
1959 }
1960 }
1961
1962 switch (opt_dynamic_list)
1963 {
1964 case dynamic_list_unset:
1965 break;
1966 case dynamic_list_data:
1967 link_info.dynamic_data = true;
1968 /* Fall through. */
1969 case dynamic_list:
1970 link_info.dynamic = true;
1971 opt_symbolic = symbolic_unset;
1972 break;
1973 }
1974
1975 /* -Bsymbolic and -Bsymbols-functions are for shared library output. */
1976 if (bfd_link_dll (&link_info))
1977 switch (opt_symbolic)
1978 {
1979 case symbolic_unset:
1980 break;
1981 case symbolic:
1982 link_info.symbolic = true;
1983 if (link_info.dynamic_list)
1984 {
1985 struct bfd_elf_version_expr *ent, *next;
1986 for (ent = link_info.dynamic_list->head.list; ent; ent = next)
1987 {
1988 next = ent->next;
1989 free (ent);
1990 }
1991 free (link_info.dynamic_list);
1992 link_info.dynamic_list = NULL;
1993 }
1994 break;
1995 case symbolic_functions:
1996 link_info.dynamic = true;
1997 link_info.dynamic_data = true;
1998 break;
1999 }
2000
2001 /* -z nosectionheader implies --strip-all. */
2002 if (config.no_section_header)
2003 {
2004 if (bfd_link_relocatable (&link_info))
2005 einfo (_("%F%P: -r and -z nosectionheader may not be used together\n"));
2006
2007 link_info.strip = strip_all;
2008 }
2009
2010 if (!bfd_link_dll (&link_info))
2011 {
2012 if (command_line.filter_shlib)
2013 einfo (_("%F%P: -F may not be used without -shared\n"));
2014 if (command_line.auxiliary_filters)
2015 einfo (_("%F%P: -f may not be used without -shared\n"));
2016 }
2017
2018 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
2019 don't see how else this can be handled, since in this case we
2020 must preserve all externally visible symbols. */
2021 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all)
2022 {
2023 link_info.strip = strip_debugger;
2024 if (link_info.discard == discard_sec_merge)
2025 link_info.discard = discard_all;
2026 }
2027 }
2028
2029 /* Add the (colon-separated) elements of DIRLIST_PTR to the
2030 library search path. */
2031
2032 static void
2033 set_default_dirlist (char *dirlist_ptr)
2034 {
2035 char *p;
2036
2037 while (1)
2038 {
2039 p = strchr (dirlist_ptr, PATH_SEPARATOR);
2040 if (p != NULL)
2041 *p = '\0';
2042 if (*dirlist_ptr != '\0')
2043 ldfile_add_library_path (dirlist_ptr, true);
2044 if (p == NULL)
2045 break;
2046 dirlist_ptr = p + 1;
2047 }
2048 }
2049
2050 static void
2051 set_section_start (char *sect, char *valstr)
2052 {
2053 const char *end;
2054 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
2055 if (*end)
2056 einfo (_("%F%P: invalid hex number `%s'\n"), valstr);
2057 lang_section_start (sect, exp_intop (val), NULL);
2058 }
2059
2060 static void
2061 set_segment_start (const char *section, char *valstr)
2062 {
2063 const char *name;
2064 const char *end;
2065 segment_type *seg;
2066
2067 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
2068 if (*end)
2069 einfo (_("%F%P: invalid hex number `%s'\n"), valstr);
2070 /* If we already have an entry for this segment, update the existing
2071 value. */
2072 name = section + 1;
2073 for (seg = segments; seg; seg = seg->next)
2074 if (strcmp (seg->name, name) == 0)
2075 {
2076 seg->value = val;
2077 lang_section_start (section, exp_intop (val), seg);
2078 return;
2079 }
2080 /* There was no existing value so we must create a new segment
2081 entry. */
2082 seg = stat_alloc (sizeof (*seg));
2083 seg->name = name;
2084 seg->value = val;
2085 seg->used = false;
2086 /* Add it to the linked list of segments. */
2087 seg->next = segments;
2088 segments = seg;
2089 /* Historically, -Ttext and friends set the base address of a
2090 particular section. For backwards compatibility, we still do
2091 that. If a SEGMENT_START directive is seen, the section address
2092 assignment will be disabled. */
2093 lang_section_start (section, exp_intop (val), seg);
2094 }
2095
2096 static void
2097 elf_shlib_list_options (FILE *file)
2098 {
2099 fprintf (file, _("\
2100 --audit=AUDITLIB Specify a library to use for auditing\n"));
2101 fprintf (file, _("\
2102 -Bgroup Selects group name lookup rules for DSO\n"));
2103 fprintf (file, _("\
2104 --disable-new-dtags Disable new dynamic tags\n"));
2105 fprintf (file, _("\
2106 --enable-new-dtags Enable new dynamic tags\n"));
2107 fprintf (file, _("\
2108 --eh-frame-hdr Create .eh_frame_hdr section\n"));
2109 fprintf (file, _("\
2110 --no-eh-frame-hdr Do not create .eh_frame_hdr section\n"));
2111 fprintf (file, _("\
2112 --exclude-libs=LIBS Make all symbols in LIBS hidden\n"));
2113 fprintf (file, _("\
2114 --hash-style=STYLE Set hash style to sysv/gnu/both. Default: "));
2115 if (DEFAULT_EMIT_SYSV_HASH)
2116 {
2117 /* Note - these strings are not translated as
2118 they are keywords not descriptive text. */
2119 if (DEFAULT_EMIT_GNU_HASH)
2120 fprintf (file, "both\n");
2121 else
2122 fprintf (file, "sysv\n");
2123 }
2124 else
2125 {
2126 if (DEFAULT_EMIT_GNU_HASH)
2127 fprintf (file, "gnu\n");
2128 else
2129 /* FIXME: Can this happen ? */
2130 fprintf (file, "none\n");
2131 }
2132 fprintf (file, _("\
2133 -P AUDITLIB, --depaudit=AUDITLIB\n" "\
2134 Specify a library to use for auditing dependencies\n"));
2135 fprintf (file, _("\
2136 -z combreloc Merge dynamic relocs into one section and sort\n"));
2137 fprintf (file, _("\
2138 -z nocombreloc Don't merge dynamic relocs into one section\n"));
2139 fprintf (file, _("\
2140 -z global Make symbols in DSO available for subsequently\n\
2141 loaded objects\n"));
2142 fprintf (file, _("\
2143 -z initfirst Mark DSO to be initialized first at runtime\n"));
2144 fprintf (file, _("\
2145 -z interpose Mark object to interpose all DSOs but executable\n"));
2146 fprintf (file, _("\
2147 -z unique Mark DSO to be loaded at most once by default, and only in the main namespace\n"));
2148 fprintf (file, _("\
2149 -z nounique Don't mark DSO as a loadable at most once\n"));
2150 fprintf (file, _("\
2151 -z lazy Mark object lazy runtime binding (default)\n"));
2152 fprintf (file, _("\
2153 -z loadfltr Mark object requiring immediate process\n"));
2154 fprintf (file, _("\
2155 -z nocopyreloc Don't create copy relocs\n"));
2156 fprintf (file, _("\
2157 -z nodefaultlib Mark object not to use default search paths\n"));
2158 fprintf (file, _("\
2159 -z nodelete Mark DSO non-deletable at runtime\n"));
2160 fprintf (file, _("\
2161 -z nodlopen Mark DSO not available to dlopen\n"));
2162 fprintf (file, _("\
2163 -z nodump Mark DSO not available to dldump\n"));
2164 fprintf (file, _("\
2165 -z now Mark object non-lazy runtime binding\n"));
2166 fprintf (file, _("\
2167 -z origin Mark object requiring immediate $ORIGIN\n\
2168 processing at runtime\n"));
2169 #if DEFAULT_LD_Z_RELRO
2170 fprintf (file, _("\
2171 -z relro Create RELRO program header (default)\n"));
2172 fprintf (file, _("\
2173 -z norelro Don't create RELRO program header\n"));
2174 #else
2175 fprintf (file, _("\
2176 -z relro Create RELRO program header\n"));
2177 fprintf (file, _("\
2178 -z norelro Don't create RELRO program header (default)\n"));
2179 #endif
2180 #if DEFAULT_LD_Z_SEPARATE_CODE
2181 fprintf (file, _("\
2182 -z separate-code Create separate code program header (default)\n"));
2183 fprintf (file, _("\
2184 -z noseparate-code Don't create separate code program header\n"));
2185 #else
2186 fprintf (file, _("\
2187 -z separate-code Create separate code program header\n"));
2188 fprintf (file, _("\
2189 -z noseparate-code Don't create separate code program header (default)\n"));
2190 #endif
2191 fprintf (file, _("\
2192 -z common Generate common symbols with STT_COMMON type\n"));
2193 fprintf (file, _("\
2194 -z nocommon Generate common symbols with STT_OBJECT type\n"));
2195 if (link_info.textrel_check == textrel_check_error)
2196 fprintf (file, _("\
2197 -z text Treat DT_TEXTREL in output as error (default)\n"));
2198 else
2199 fprintf (file, _("\
2200 -z text Treat DT_TEXTREL in output as error\n"));
2201 if (link_info.textrel_check == textrel_check_none)
2202 {
2203 fprintf (file, _("\
2204 -z notext Don't treat DT_TEXTREL in output as error (default)\n"));
2205 fprintf (file, _("\
2206 -z textoff Don't treat DT_TEXTREL in output as error (default)\n"));
2207 }
2208 else
2209 {
2210 fprintf (file, _("\
2211 -z notext Don't treat DT_TEXTREL in output as error\n"));
2212 fprintf (file, _("\
2213 -z textoff Don't treat DT_TEXTREL in output as error\n"));
2214 }
2215 }
2216
2217 static void
2218 elf_static_list_options (FILE *file)
2219 {
2220 fprintf (file, _("\
2221 --build-id[=STYLE] Generate build ID note\n"));
2222 fprintf (file, _("\
2223 --package-metadata[=JSON] Generate package metadata note\n"));
2224 fprintf (file, _("\
2225 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi|zstd]\n\
2226 Compress DWARF debug sections\n"));
2227 fprintf (file, _("\
2228 Default: %s\n"),
2229 bfd_get_compression_algorithm_name (config.compress_debug));
2230 fprintf (file, _("\
2231 -z common-page-size=SIZE Set common page size to SIZE\n"));
2232 fprintf (file, _("\
2233 -z max-page-size=SIZE Set maximum page size to SIZE\n"));
2234 fprintf (file, _("\
2235 -z defs Report unresolved symbols in object files\n"));
2236 fprintf (file, _("\
2237 -z undefs Ignore unresolved symbols in object files\n"));
2238 fprintf (file, _("\
2239 -z muldefs Allow multiple definitions\n"));
2240 fprintf (file, _("\
2241 -z stack-size=SIZE Set size of stack segment\n"));
2242 fprintf (file, _("\
2243 -z execstack Mark executable as requiring executable stack\n"));
2244 fprintf (file, _("\
2245 -z noexecstack Mark executable as not requiring executable stack\n"));
2246 #if DEFAULT_LD_WARN_EXECSTACK == 1
2247 fprintf (file, _("\
2248 --warn-execstack Generate a warning if the stack is executable (default)\n"));
2249 #else
2250 fprintf (file, _("\
2251 --warn-execstack Generate a warning if the stack is executable\n"));
2252 #endif
2253 #if DEFAULT_LD_WARN_EXECSTACK == 0
2254 fprintf (file, _("\
2255 --no-warn-execstack Do not generate a warning if the stack is executable (default)\n"));
2256 #else
2257 fprintf (file, _("\
2258 --no-warn-execstack Do not generate a warning if the stack is executable\n"));
2259 #endif
2260 #if DEFAULT_LD_WARN_RWX_SEGMENTS
2261 fprintf (file, _("\
2262 --warn-rwx-segments Generate a warning if a LOAD segment has RWX permissions (default)\n"));
2263 fprintf (file, _("\
2264 --no-warn-rwx-segments Do not generate a warning if a LOAD segments has RWX permissions\n"));
2265 #else
2266 fprintf (file, _("\
2267 --warn-rwx-segments Generate a warning if a LOAD segment has RWX permissions\n"));
2268 fprintf (file, _("\
2269 --no-warn-rwx-segments Do not generate a warning if a LOAD segments has RWX permissions (default)\n"));
2270 #endif
2271 fprintf (file, _("\
2272 -z unique-symbol Avoid duplicated local symbol names\n"));
2273 fprintf (file, _("\
2274 -z nounique-symbol Keep duplicated local symbol names (default)\n"));
2275 fprintf (file, _("\
2276 -z globalaudit Mark executable requiring global auditing\n"));
2277 fprintf (file, _("\
2278 -z start-stop-gc Enable garbage collection on __start/__stop\n"));
2279 fprintf (file, _("\
2280 -z nostart-stop-gc Don't garbage collect __start/__stop (default)\n"));
2281 fprintf (file, _("\
2282 -z start-stop-visibility=V Set visibility of built-in __start/__stop symbols\n\
2283 to DEFAULT, PROTECTED, HIDDEN or INTERNAL\n"));
2284 fprintf (file, _("\
2285 -z sectionheader Generate section header (default)\n"));
2286 fprintf (file, _("\
2287 -z nosectionheader Do not generate section header\n"));
2288 }
2289
2290 static void
2291 elf_plt_unwind_list_options (FILE *file)
2292 {
2293 fprintf (file, _("\
2294 --ld-generated-unwind-info Generate exception handling info for PLT\n"));
2295 fprintf (file, _("\
2296 --no-ld-generated-unwind-info\n\
2297 Don't generate exception handling info for PLT\n"));
2298 }
2299
2300 static void
2301 ld_list_options (FILE *file, bool elf, bool shlib, bool plt_unwind)
2302 {
2303 if (!elf)
2304 return;
2305 printf (_("ELF emulations:\n"));
2306 if (plt_unwind)
2307 elf_plt_unwind_list_options (file);
2308 elf_static_list_options (file);
2309 if (shlib)
2310 elf_shlib_list_options (file);
2311 }
2312
2313 \f
2314 /* Print help messages for the options. */
2315
2316 static void
2317 help (void)
2318 {
2319 unsigned i;
2320 const char **targets, **pp;
2321 int len;
2322
2323 printf (_("Usage: %s [options] file...\n"), program_name);
2324
2325 printf (_("Options:\n"));
2326 for (i = 0; i < OPTION_COUNT; i++)
2327 {
2328 if (ld_options[i].doc != NULL)
2329 {
2330 bool comma;
2331 unsigned j;
2332
2333 printf (" ");
2334
2335 comma = false;
2336 len = 2;
2337
2338 j = i;
2339 do
2340 {
2341 if (ld_options[j].shortopt != '\0'
2342 && ld_options[j].control != NO_HELP)
2343 {
2344 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
2345 len += (comma ? 2 : 0) + 2;
2346 if (ld_options[j].arg != NULL)
2347 {
2348 if (ld_options[j].opt.has_arg != optional_argument)
2349 {
2350 printf (" ");
2351 ++len;
2352 }
2353 printf ("%s", _(ld_options[j].arg));
2354 len += strlen (_(ld_options[j].arg));
2355 }
2356 comma = true;
2357 }
2358 ++j;
2359 }
2360 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
2361
2362 j = i;
2363 do
2364 {
2365 if (ld_options[j].opt.name != NULL
2366 && ld_options[j].control != NO_HELP)
2367 {
2368 int two_dashes =
2369 (ld_options[j].control == TWO_DASHES
2370 || ld_options[j].control == EXACTLY_TWO_DASHES);
2371
2372 printf ("%s-%s%s",
2373 comma ? ", " : "",
2374 two_dashes ? "-" : "",
2375 ld_options[j].opt.name);
2376 len += ((comma ? 2 : 0)
2377 + 1
2378 + (two_dashes ? 1 : 0)
2379 + strlen (ld_options[j].opt.name));
2380 if (ld_options[j].arg != NULL)
2381 {
2382 printf (" %s", _(ld_options[j].arg));
2383 len += 1 + strlen (_(ld_options[j].arg));
2384 }
2385 comma = true;
2386 }
2387 ++j;
2388 }
2389 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
2390
2391 if (len >= 30)
2392 {
2393 printf ("\n");
2394 len = 0;
2395 }
2396
2397 for (; len < 30; len++)
2398 putchar (' ');
2399
2400 printf ("%s\n", _(ld_options[i].doc));
2401 }
2402 }
2403 printf (_(" @FILE"));
2404 for (len = strlen (" @FILE"); len < 30; len++)
2405 putchar (' ');
2406 printf (_("Read options from FILE\n"));
2407
2408 /* Note: Various tools (such as libtool) depend upon the
2409 format of the listings below - do not change them. */
2410 /* xgettext:c-format */
2411 printf (_("%s: supported targets:"), program_name);
2412 targets = bfd_target_list ();
2413 for (pp = targets; *pp != NULL; pp++)
2414 printf (" %s", *pp);
2415 free (targets);
2416 printf ("\n");
2417
2418 /* xgettext:c-format */
2419 printf (_("%s: supported emulations: "), program_name);
2420 ldemul_list_emulations (stdout);
2421 printf ("\n");
2422
2423 /* xgettext:c-format */
2424 printf (_("%s: emulation specific options:\n"), program_name);
2425 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS,
2426 ELF_PLT_UNWIND_LIST_OPTIONS);
2427 ldemul_list_emulation_options (stdout);
2428 printf ("\n");
2429
2430 if (REPORT_BUGS_TO[0])
2431 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
2432 }
The GNU Binutils are a collection of binary tools.