1 /* Parse options for the GNU linker.
2 Copyright (C) 1991-2024 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") , EXACTLY_TWO_DASHES },
109 { {"format", required_argument, NULL, 'b'},
110 'b', N_("TARGET"), N_("Specify target for following input files"),
111 EXACTLY_TWO_DASHES },
112 { {"mri-script", required_argument, NULL, 'c'},
113 'c', N_("FILE"), N_("Read MRI format linker script"), EXACTLY_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, NetBSD. */
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
555 { {"error-execstack", no_argument, NULL, OPTION_ERROR_EXECSTACK},
556 '\0', NULL, NULL, TWO_DASHES },
557 { {"no-error-execstack", no_argument, NULL, OPTION_NO_ERROR_EXECSTACK},
558 '\0', NULL, NULL, TWO_DASHES },
559 { {"warn-execstack-objects", no_argument, NULL, OPTION_WARN_EXECSTACK_OBJECTS},
560 '\0', NULL, NULL, TWO_DASHES },
561 { {"warn-execstack", no_argument, NULL, OPTION_WARN_EXECSTACK},
562 '\0', NULL, NULL, TWO_DASHES },
563 { {"no-warn-execstack", no_argument, NULL, OPTION_NO_WARN_EXECSTACK},
564 '\0', NULL, NULL, TWO_DASHES },
565
566 { {"error-rwx-segments", no_argument, NULL, OPTION_ERROR_RWX_SEGMENTS},
567 '\0', NULL, NULL, TWO_DASHES },
568 { {"no-error-rwx-segments", no_argument, NULL, OPTION_NO_ERROR_RWX_SEGMENTS},
569 '\0', NULL, NULL, TWO_DASHES },
570 { {"warn-rwx-segments", no_argument, NULL, OPTION_WARN_RWX_SEGMENTS},
571 '\0', NULL, NULL, TWO_DASHES },
572 { {"no-warn-rwx-segments", no_argument, NULL, OPTION_NO_WARN_RWX_SEGMENTS},
573 '\0', NULL, NULL, TWO_DASHES },
574
575 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
576 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
577 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
578 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
579 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
580 '\0', NULL, N_("Warn if start of section changes due to alignment"),
581 TWO_DASHES },
582 { {"warn-textrel", no_argument, NULL, OPTION_WARN_TEXTREL},
583 '\0', NULL,
584 #if DEFAULT_LD_TEXTREL_CHECK_WARNING
585 N_("Warn if output has DT_TEXTREL (default)"),
586 #else
587 N_("Warn if output has DT_TEXTREL"),
588 #endif
589 TWO_DASHES },
590 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_TEXTREL},
591 '\0', NULL, NULL, NO_HELP },
592 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
593 '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
594 TWO_DASHES },
595 { {"warn-unresolved-symbols", no_argument, NULL,
596 OPTION_WARN_UNRESOLVED_SYMBOLS},
597 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
598 { {"error-unresolved-symbols", no_argument, NULL,
599 OPTION_ERROR_UNRESOLVED_SYMBOLS},
600 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
601 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
602 '\0', NULL, N_("Include all objects from following archives"),
603 TWO_DASHES },
604 { {"Bforcearchive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
605 '\0', NULL, NULL, TWO_DASHES }, /* NetBSD. */
606 { {"wrap", required_argument, NULL, OPTION_WRAP},
607 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
608 { {"ignore-unresolved-symbol", required_argument, NULL,
609 OPTION_IGNORE_UNRESOLVED_SYMBOL},
610 '\0', N_("SYMBOL"),
611 N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES },
612 { {"push-state", no_argument, NULL, OPTION_PUSH_STATE},
613 '\0', NULL, N_("Push state of flags governing input file handling"),
614 TWO_DASHES },
615 { {"pop-state", no_argument, NULL, OPTION_POP_STATE},
616 '\0', NULL, N_("Pop state of flags governing input file handling"),
617 TWO_DASHES },
618 { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE},
619 '\0', NULL, N_("Report target memory usage"), TWO_DASHES },
620 { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING},
621 '\0', N_("=MODE"), N_("Control how orphan sections are handled."),
622 TWO_DASHES },
623 { {"print-map-discarded", no_argument, NULL, OPTION_PRINT_MAP_DISCARDED},
624 '\0', NULL, N_("Show discarded sections in map file output (default)"),
625 TWO_DASHES },
626 { {"no-print-map-discarded", no_argument, NULL, OPTION_NO_PRINT_MAP_DISCARDED},
627 '\0', NULL, N_("Do not show discarded sections in map file output"),
628 TWO_DASHES },
629 { {"print-map-locals", no_argument, NULL, OPTION_PRINT_MAP_LOCALS},
630 '\0', NULL, N_("Show local symbols in map file output"),
631 TWO_DASHES },
632 { {"no-print-map-locals", no_argument, NULL, OPTION_NO_PRINT_MAP_LOCALS},
633 '\0', NULL, N_("Do not show local symbols in map file output (default)"),
634 TWO_DASHES },
635 { {"ctf-variables", no_argument, NULL, OPTION_CTF_VARIABLES},
636 '\0', NULL, N_("Emit names and types of static variables in CTF"),
637 TWO_DASHES },
638 { {"no-ctf-variables", no_argument, NULL, OPTION_NO_CTF_VARIABLES},
639 '\0', NULL, N_("Do not emit names and types of static variables in CTF"),
640 TWO_DASHES },
641 { {"ctf-share-types=<method>", required_argument, NULL,
642 OPTION_CTF_SHARE_TYPES},
643 '\0', NULL, N_("How to share CTF types between translation units.\n"
644 " <method> is: share-unconflicted (default),\n"
645 " share-duplicated"),
646 TWO_DASHES },
647 };
648
649 #define OPTION_COUNT ARRAY_SIZE (ld_options)
650
651 void
parse_args(unsigned argc,char ** argv)652 parse_args (unsigned argc, char **argv)
653 {
654 unsigned i;
655 int is, il, irl;
656 int ingroup = 0;
657 char *default_dirlist = NULL;
658 char *shortopts;
659 struct option *longopts;
660 struct option *really_longopts;
661 int last_optind;
662 enum symbolic_enum
663 {
664 symbolic_unset = 0,
665 symbolic,
666 symbolic_functions,
667 } opt_symbolic = symbolic_unset;
668 enum dynamic_list_enum
669 {
670 dynamic_list_unset = 0,
671 dynamic_list_data,
672 dynamic_list
673 } opt_dynamic_list = dynamic_list_unset;
674 struct bfd_elf_dynamic_list *export_list = NULL;
675
676 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
677 longopts = (struct option *)
678 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
679 really_longopts = (struct option *)
680 xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
681
682 /* Starting the short option string with '-' is for programs that
683 expect options and other ARGV-elements in any order and that care about
684 the ordering of the two. We describe each non-option ARGV-element
685 as if it were the argument of an option with character code 1. */
686 shortopts[0] = '-';
687 is = 1;
688 il = 0;
689 irl = 0;
690 for (i = 0; i < OPTION_COUNT; i++)
691 {
692 if (ld_options[i].shortopt != '\0')
693 {
694 shortopts[is] = ld_options[i].shortopt;
695 ++is;
696 if (ld_options[i].opt.has_arg == required_argument
697 || ld_options[i].opt.has_arg == optional_argument)
698 {
699 shortopts[is] = ':';
700 ++is;
701 if (ld_options[i].opt.has_arg == optional_argument)
702 {
703 shortopts[is] = ':';
704 ++is;
705 }
706 }
707 }
708 if (ld_options[i].opt.name != NULL)
709 {
710 if (ld_options[i].control == EXACTLY_TWO_DASHES)
711 {
712 really_longopts[irl] = ld_options[i].opt;
713 ++irl;
714 }
715 else
716 {
717 longopts[il] = ld_options[i].opt;
718 ++il;
719 }
720 }
721 }
722 shortopts[is] = '\0';
723 longopts[il].name = NULL;
724 really_longopts[irl].name = NULL;
725
726 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
727
728 /* The -G option is ambiguous on different platforms. Sometimes it
729 specifies the largest data size to put into the small data
730 section. Sometimes it is equivalent to --shared. Unfortunately,
731 the first form takes an argument, while the second does not.
732
733 We need to permit the --shared form because on some platforms,
734 such as Solaris, gcc -shared will pass -G to the linker.
735
736 To permit either usage, we look through the argument list. If we
737 find -G not followed by a number, we change it into --shared.
738 This will work for most normal cases. */
739 for (i = 1; i < argc; i++)
740 if (strcmp (argv[i], "-G") == 0
741 && (i + 1 >= argc
742 || ! ISDIGIT (argv[i + 1][0])))
743 argv[i] = (char *) "--shared";
744
745 /* Because we permit long options to start with a single dash, and
746 we have a --library option, and the -l option is conventionally
747 used with an immediately following argument, we can have bad
748 results if somebody tries to use -l with a library whose name
749 happens to start with "ibrary", as in -li. We avoid problems by
750 simply turning -l into --library. This means that users will
751 have to use two dashes in order to use --library, which is OK
752 since that's how it is documented.
753
754 FIXME: It's possible that this problem can arise for other short
755 options as well, although the user does always have the recourse
756 of adding a space between the option and the argument. */
757 for (i = 1; i < argc; i++)
758 {
759 if (argv[i][0] == '-'
760 && argv[i][1] == 'l'
761 && argv[i][2] != '\0')
762 {
763 char *n;
764
765 n = (char *) xmalloc (strlen (argv[i]) + 20);
766 sprintf (n, "--library=%s", argv[i] + 2);
767 argv[i] = n;
768 }
769 }
770
771 last_optind = -1;
772 while (1)
773 {
774 int longind = 0;
775 int optc;
776 static unsigned int defsym_count;
777
778 /* Using last_optind lets us avoid calling ldemul_parse_args
779 multiple times on a single option, which would lead to
780 confusion in the internal static variables maintained by
781 getopt. This could otherwise happen for an argument like
782 -nx, in which the -n is parsed as a single option, and we
783 loop around to pick up the -x. */
784 if (optind != last_optind)
785 if (ldemul_parse_args (argc, argv))
786 continue;
787
788 /* getopt_long_only is like getopt_long, but '-' as well as '--'
789 can indicate a long option. */
790 opterr = 0;
791 last_optind = optind;
792 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
793 if (optc == '?')
794 {
795 optind = last_optind;
796 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
797 }
798 /* Attempt to detect grouped short options, eg: "-non-start".
799 Accepting such options is error prone as it is not clear if the user
800 intended "-n -o n-start" or "--non-start". */
801 else if (longind == 0 /* This is a short option. */
802 && optc > 32 /* It is a valid option. */
803 /* The character is not the second character of argv[last_optind]. */
804 && optc != argv[last_optind][1])
805 {
806 if (optarg)
807 einfo (_("%F%P: Error: unable to disambiguate: %s (did you mean -%s ?)\n"),
808 argv[last_optind], argv[last_optind]);
809 else
810 einfo (_("%P: Warning: grouped short command line options are deprecated: %s\n"), argv[last_optind]);
811 }
812
813 if (ldemul_handle_option (optc))
814 continue;
815
816 if (optc == -1)
817 break;
818
819 switch (optc)
820 {
821 case '?':
822 {
823 /* If the last word on the command line is an option that
824 requires an argument, getopt will refuse to recognise it.
825 Try to catch such options here and issue a more helpful
826 error message than just "unrecognized option". */
827 int opt;
828
829 for (opt = ARRAY_SIZE (ld_options); opt--;)
830 if (ld_options[opt].opt.has_arg == required_argument
831 /* FIXME: There are a few short options that do not
832 have long equivalents, but which require arguments.
833 We should handle them too. */
834 && ld_options[opt].opt.name != NULL
835 && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0)
836 {
837 einfo (_("%P: %s: missing argument\n"), argv[last_optind]);
838 break;
839 }
840
841 if (opt == -1)
842 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
843 }
844 /* Fall through. */
845
846 default:
847 einfo (_("%F%P: use the --help option for usage information\n"));
848 break;
849
850 case 1: /* File name. */
851 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
852 break;
853
854 case OPTION_IGNORE:
855 break;
856 case 'a':
857 /* For HP/UX compatibility. Actually -a shared should mean
858 ``use only shared libraries'' but, then, we don't
859 currently support shared libraries on HP/UX anyhow. */
860 if (strcmp (optarg, "archive") == 0)
861 input_flags.dynamic = false;
862 else if (strcmp (optarg, "shared") == 0
863 || strcmp (optarg, "default") == 0)
864 input_flags.dynamic = true;
865 else
866 einfo (_("%F%P: unrecognized -a option `%s'\n"), optarg);
867 break;
868 case OPTION_ASSERT:
869 /* FIXME: We just ignore these, but we should handle them. */
870 if (strcmp (optarg, "definitions") == 0)
871 ;
872 else if (strcmp (optarg, "nodefinitions") == 0)
873 ;
874 else if (strcmp (optarg, "nosymbolic") == 0)
875 ;
876 else if (strcmp (optarg, "pure-text") == 0)
877 ;
878 else
879 einfo (_("%F%P: unrecognized -assert option `%s'\n"), optarg);
880 break;
881 case 'A':
882 ldfile_add_arch (optarg);
883 break;
884 case 'b':
885 lang_add_target (optarg);
886 break;
887 case 'c':
888 ldfile_open_command_file (optarg);
889 parser_input = input_mri_script;
890 yyparse ();
891 break;
892 case OPTION_CALL_SHARED:
893 input_flags.dynamic = true;
894 break;
895 case OPTION_NON_SHARED:
896 input_flags.dynamic = false;
897 break;
898 case OPTION_CREF:
899 command_line.cref = true;
900 link_info.notice_all = true;
901 break;
902 case 'd':
903 command_line.force_common_definition = true;
904 break;
905 case OPTION_FORCE_GROUP_ALLOCATION:
906 command_line.force_group_allocation = true;
907 break;
908 case OPTION_DEFSYM:
909 lex_string = optarg;
910 lex_redirect (optarg, "--defsym", ++defsym_count);
911 parser_input = input_defsym;
912 yyparse ();
913 lex_string = NULL;
914 break;
915 case OPTION_DEMANGLE:
916 demangling = true;
917 if (optarg != NULL)
918 {
919 enum demangling_styles style;
920
921 style = cplus_demangle_name_to_style (optarg);
922 if (style == unknown_demangling)
923 einfo (_("%F%P: unknown demangling style `%s'\n"),
924 optarg);
925
926 cplus_demangle_set_style (style);
927 }
928 break;
929 case 'I': /* Used on Solaris. */
930 case OPTION_DYNAMIC_LINKER:
931 command_line.interpreter = optarg;
932 link_info.nointerp = 0;
933 break;
934 case OPTION_NO_DYNAMIC_LINKER:
935 link_info.nointerp = 1;
936 break;
937 case OPTION_SYSROOT:
938 /* Already handled in ldmain.c. */
939 break;
940 case OPTION_EB:
941 command_line.endian = ENDIAN_BIG;
942 break;
943 case OPTION_EL:
944 command_line.endian = ENDIAN_LITTLE;
945 break;
946 case OPTION_EMBEDDED_RELOCS:
947 command_line.embedded_relocs = true;
948 break;
949 case OPTION_EXPORT_DYNAMIC:
950 case 'E': /* HP/UX compatibility. */
951 link_info.export_dynamic = true;
952 break;
953 case OPTION_NO_EXPORT_DYNAMIC:
954 link_info.export_dynamic = false;
955 break;
956 case OPTION_NON_CONTIGUOUS_REGIONS:
957 link_info.non_contiguous_regions = true;
958 break;
959 case OPTION_NON_CONTIGUOUS_REGIONS_WARNINGS:
960 link_info.non_contiguous_regions_warnings = true;
961 break;
962
963 case OPTION_ERROR_EXECSTACK:
964 link_info.error_execstack = 1;
965 break;
966 case OPTION_NO_ERROR_EXECSTACK:
967 link_info.error_execstack = 0;
968 break;
969 case OPTION_WARN_EXECSTACK_OBJECTS:
970 link_info.warn_execstack = 2;
971 break;
972 case OPTION_WARN_EXECSTACK:
973 link_info.warn_execstack = 1;
974 break;
975 case OPTION_NO_WARN_EXECSTACK:
976 link_info.warn_execstack = 0;
977 break;
978
979 case OPTION_ERROR_RWX_SEGMENTS:
980 link_info.warn_is_error_for_rwx_segments = 1;
981 break;
982 case OPTION_NO_ERROR_RWX_SEGMENTS:
983 link_info.warn_is_error_for_rwx_segments = 0;
984 break;
985 case OPTION_WARN_RWX_SEGMENTS:
986 link_info.no_warn_rwx_segments = 0;
987 link_info.user_warn_rwx_segments = 1;
988 break;
989 case OPTION_NO_WARN_RWX_SEGMENTS:
990 link_info.no_warn_rwx_segments = 1;
991 link_info.user_warn_rwx_segments = 1;
992 break;
993
994 case 'e':
995 lang_add_entry (optarg, true);
996 break;
997 case 'f':
998 if (command_line.auxiliary_filters == NULL)
999 {
1000 command_line.auxiliary_filters = (char **)
1001 xmalloc (2 * sizeof (char *));
1002 command_line.auxiliary_filters[0] = optarg;
1003 command_line.auxiliary_filters[1] = NULL;
1004 }
1005 else
1006 {
1007 int c;
1008 char **p;
1009
1010 c = 0;
1011 for (p = command_line.auxiliary_filters; *p != NULL; p++)
1012 ++c;
1013 command_line.auxiliary_filters = (char **)
1014 xrealloc (command_line.auxiliary_filters,
1015 (c + 2) * sizeof (char *));
1016 command_line.auxiliary_filters[c] = optarg;
1017 command_line.auxiliary_filters[c + 1] = NULL;
1018 }
1019 break;
1020 case 'F':
1021 command_line.filter_shlib = optarg;
1022 break;
1023 case OPTION_FORCE_EXE_SUFFIX:
1024 command_line.force_exe_suffix = true;
1025 break;
1026 case 'G':
1027 {
1028 char *end;
1029 g_switch_value = strtoul (optarg, &end, 0);
1030 if (*end)
1031 einfo (_("%F%P: invalid number `%s'\n"), optarg);
1032 }
1033 break;
1034 case 'g':
1035 /* Ignore. */
1036 break;
1037 case OPTION_GC_SECTIONS:
1038 link_info.gc_sections = true;
1039 break;
1040 case OPTION_PRINT_GC_SECTIONS:
1041 link_info.print_gc_sections = true;
1042 break;
1043 case OPTION_GC_KEEP_EXPORTED:
1044 link_info.gc_keep_exported = true;
1045 break;
1046 case OPTION_HELP:
1047 help ();
1048 xexit (0);
1049 break;
1050 case 'L':
1051 ldfile_add_library_path (optarg, true);
1052 break;
1053 case 'l':
1054 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
1055 break;
1056 case 'M':
1057 config.map_filename = "-";
1058 break;
1059 case 'm':
1060 /* Ignore. Was handled in a pre-parse. */
1061 break;
1062 case OPTION_MAP:
1063 config.map_filename = optarg;
1064 break;
1065 case 'N':
1066 config.text_read_only = false;
1067 config.magic_demand_paged = false;
1068 input_flags.dynamic = false;
1069 break;
1070 case OPTION_NO_OMAGIC:
1071 config.text_read_only = true;
1072 config.magic_demand_paged = true;
1073 /* NB/ Does not set input_flags.dynamic to TRUE.
1074 Use --call-shared or -Bdynamic for this. */
1075 break;
1076 case 'n':
1077 config.text_read_only = true;
1078 config.magic_demand_paged = false;
1079 input_flags.dynamic = false;
1080 break;
1081 case OPTION_NO_DEFINE_COMMON:
1082 link_info.inhibit_common_definition = true;
1083 break;
1084 case OPTION_NO_DEMANGLE:
1085 demangling = false;
1086 break;
1087 case OPTION_NO_GC_SECTIONS:
1088 link_info.gc_sections = false;
1089 break;
1090 case OPTION_NO_PRINT_GC_SECTIONS:
1091 link_info.print_gc_sections = false;
1092 break;
1093 case OPTION_NO_KEEP_MEMORY:
1094 link_info.keep_memory = false;
1095 break;
1096 case OPTION_NO_UNDEFINED:
1097 link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
1098 break;
1099 case OPTION_ALLOW_SHLIB_UNDEFINED:
1100 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1101 break;
1102 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
1103 link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
1104 break;
1105 case OPTION_UNRESOLVED_SYMBOLS:
1106 if (strcmp (optarg, "ignore-all") == 0)
1107 {
1108 link_info.unresolved_syms_in_objects = RM_IGNORE;
1109 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1110 }
1111 else if (strcmp (optarg, "report-all") == 0)
1112 {
1113 link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
1114 link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
1115 }
1116 else if (strcmp (optarg, "ignore-in-object-files") == 0)
1117 {
1118 link_info.unresolved_syms_in_objects = RM_IGNORE;
1119 link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
1120 }
1121 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
1122 {
1123 link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
1124 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1125 }
1126 else
1127 einfo (_("%F%P: bad --unresolved-symbols option: %s\n"), optarg);
1128 break;
1129 case OPTION_WARN_UNRESOLVED_SYMBOLS:
1130 link_info.warn_unresolved_syms = true;
1131 break;
1132 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
1133 link_info.warn_unresolved_syms = false;
1134 break;
1135 case OPTION_ALLOW_MULTIPLE_DEFINITION:
1136 link_info.allow_multiple_definition = true;
1137 break;
1138
1139 #if SUPPORT_ERROR_HANDLING_SCRIPT
1140 case OPTION_ERROR_HANDLING_SCRIPT:
1141 /* FIXME: Should we warn if the script is being overridden by another ?
1142 Or maybe they should be chained together ? */
1143 error_handling_script = optarg;
1144 break;
1145 #endif
1146
1147 case OPTION_ENABLE_LINKER_VERSION:
1148 enable_linker_version = true;
1149 break;
1150 case OPTION_DISABLE_LINKER_VERSION:
1151 enable_linker_version = false;
1152 break;
1153
1154 case OPTION_UNDEFINED_VERSION:
1155 link_info.allow_undefined_version = true;
1156 break;
1157 case OPTION_NO_UNDEFINED_VERSION:
1158 link_info.allow_undefined_version = false;
1159 break;
1160 case OPTION_DEFAULT_SYMVER:
1161 link_info.create_default_symver = true;
1162 break;
1163 case OPTION_DEFAULT_IMPORTED_SYMVER:
1164 link_info.default_imported_symver = true;
1165 break;
1166 case OPTION_NO_WARN_MISMATCH:
1167 command_line.warn_mismatch = false;
1168 break;
1169 case OPTION_NO_WARN_SEARCH_MISMATCH:
1170 command_line.warn_search_mismatch = false;
1171 break;
1172 case OPTION_NOINHIBIT_EXEC:
1173 force_make_executable = true;
1174 break;
1175 case OPTION_NOSTDLIB:
1176 config.only_cmd_line_lib_dirs = true;
1177 break;
1178 case OPTION_NO_WHOLE_ARCHIVE:
1179 input_flags.whole_archive = false;
1180 break;
1181 case 'O':
1182 /* FIXME "-O<non-digits> <value>" used to set the address of
1183 section <non-digits>. Was this for compatibility with
1184 something, or can we create a new option to do that
1185 (with a syntax similar to -defsym)?
1186 getopt can't handle two args to an option without kludges. */
1187
1188 /* Enable optimizations of output files. */
1189 link_info.optimize = strtoul (optarg, NULL, 0) != 0;
1190 break;
1191 case 'o':
1192 lang_add_output (optarg, 0);
1193 break;
1194 case OPTION_OFORMAT:
1195 lang_add_output_format (optarg, NULL, NULL, 0);
1196 break;
1197 case OPTION_OUT_IMPLIB:
1198 command_line.out_implib_filename = xstrdup (optarg);
1199 break;
1200 case OPTION_PRINT_SYSROOT:
1201 if (*ld_sysroot)
1202 puts (ld_sysroot);
1203 xexit (0);
1204 break;
1205 case OPTION_PRINT_OUTPUT_FORMAT:
1206 command_line.print_output_format = true;
1207 break;
1208 #if BFD_SUPPORTS_PLUGINS
1209 case OPTION_PLUGIN:
1210 plugin_opt_plugin (optarg);
1211 break;
1212 case OPTION_PLUGIN_OPT:
1213 if (plugin_opt_plugin_arg (optarg))
1214 einfo (_("%F%P: bad -plugin-opt option\n"));
1215 break;
1216 #endif /* BFD_SUPPORTS_PLUGINS */
1217 case 'q':
1218 link_info.emitrelocations = true;
1219 break;
1220 case 'i':
1221 case 'r':
1222 if (optind == last_optind)
1223 /* This can happen if the user put "-rpath,a" on the command
1224 line. (Or something similar. The comma is important).
1225 Getopt becomes confused and thinks that this is a -r option
1226 but it cannot parse the text after the -r so it refuses to
1227 increment the optind counter. Detect this case and issue
1228 an error message here. We cannot just make this a warning,
1229 increment optind, and continue because getopt is too confused
1230 and will seg-fault the next time around. */
1231 einfo(_("%F%P: unrecognised option: %s\n"), argv[optind]);
1232
1233 if (bfd_link_pic (&link_info))
1234 einfo (_("%F%P: -r and %s may not be used together\n"),
1235 bfd_link_dll (&link_info) ? "-shared" : "-pie");
1236
1237 link_info.type = type_relocatable;
1238 config.build_constructors = false;
1239 config.magic_demand_paged = false;
1240 config.text_read_only = false;
1241 input_flags.dynamic = false;
1242 break;
1243 case 'R':
1244 /* The GNU linker traditionally uses -R to mean to include
1245 only the symbols from a file. The Solaris linker uses -R
1246 to set the path used by the runtime linker to find
1247 libraries. This is the GNU linker -rpath argument. We
1248 try to support both simultaneously by checking the file
1249 named. If it is a directory, rather than a regular file,
1250 we assume -rpath was meant. */
1251 {
1252 struct stat s;
1253
1254 if (stat (optarg, &s) >= 0
1255 && ! S_ISDIR (s.st_mode))
1256 {
1257 lang_add_input_file (optarg,
1258 lang_input_file_is_symbols_only_enum,
1259 NULL);
1260 break;
1261 }
1262 }
1263 /* Fall through. */
1264 case OPTION_RPATH:
1265 if (command_line.rpath == NULL)
1266 command_line.rpath = xstrdup (optarg);
1267 else
1268 {
1269 size_t rpath_len = strlen (command_line.rpath);
1270 size_t optarg_len = strlen (optarg);
1271 char *buf;
1272 char *cp = command_line.rpath;
1273
1274 /* First see whether OPTARG is already in the path. */
1275 do
1276 {
1277 if (strncmp (optarg, cp, optarg_len) == 0
1278 && (cp[optarg_len] == 0
1279 || cp[optarg_len] == config.rpath_separator))
1280 /* We found it. */
1281 break;
1282
1283 /* Not yet found. */
1284 cp = strchr (cp, config.rpath_separator);
1285 if (cp != NULL)
1286 ++cp;
1287 }
1288 while (cp != NULL);
1289
1290 if (cp == NULL)
1291 {
1292 buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1293 sprintf (buf, "%s%c%s", command_line.rpath,
1294 config.rpath_separator, optarg);
1295 free (command_line.rpath);
1296 command_line.rpath = buf;
1297 }
1298 }
1299 break;
1300 case OPTION_RPATH_LINK:
1301 if (command_line.rpath_link == NULL)
1302 command_line.rpath_link = xstrdup (optarg);
1303 else
1304 {
1305 char *buf;
1306
1307 buf = (char *) xmalloc (strlen (command_line.rpath_link)
1308 + strlen (optarg)
1309 + 2);
1310 sprintf (buf, "%s%c%s", command_line.rpath_link,
1311 config.rpath_separator, optarg);
1312 free (command_line.rpath_link);
1313 command_line.rpath_link = buf;
1314 }
1315 break;
1316 case OPTION_NO_RELAX:
1317 DISABLE_RELAXATION;
1318 break;
1319 case OPTION_RELAX:
1320 ENABLE_RELAXATION;
1321 break;
1322 case OPTION_RETAIN_SYMBOLS_FILE:
1323 add_keepsyms_file (optarg);
1324 break;
1325 case 'S':
1326 link_info.strip = strip_debugger;
1327 break;
1328 case 's':
1329 link_info.strip = strip_all;
1330 break;
1331 case OPTION_STRIP_DISCARDED:
1332 link_info.strip_discarded = true;
1333 break;
1334 case OPTION_NO_STRIP_DISCARDED:
1335 link_info.strip_discarded = false;
1336 break;
1337 case OPTION_DISABLE_MULTIPLE_DEFS_ABS:
1338 link_info.prohibit_multiple_definition_absolute = true;
1339 break;
1340 case OPTION_SHARED:
1341 if (config.has_shared)
1342 {
1343 if (bfd_link_relocatable (&link_info))
1344 einfo (_("%F%P: -r and %s may not be used together\n"),
1345 "-shared");
1346
1347 link_info.type = type_dll;
1348 /* When creating a shared library, the default
1349 behaviour is to ignore any unresolved references. */
1350 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1351 link_info.unresolved_syms_in_objects = RM_IGNORE;
1352 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1353 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1354 }
1355 else
1356 einfo (_("%F%P: -shared not supported\n"));
1357 break;
1358 case OPTION_NO_PIE:
1359 link_info.type = type_pde;
1360 break;
1361 case OPTION_PIE:
1362 if (config.has_shared)
1363 {
1364 if (bfd_link_relocatable (&link_info))
1365 einfo (_("%F%P: -r and %s may not be used together\n"), "-pie");
1366
1367 link_info.type = type_pie;
1368 }
1369 else
1370 einfo (_("%F%P: -pie not supported\n"));
1371 break;
1372 case 'h': /* Used on Solaris. */
1373 case OPTION_SONAME:
1374 if (optarg[0] == '\0' && command_line.soname
1375 && command_line.soname[0])
1376 einfo (_("%P: SONAME must not be empty string; keeping previous one\n"));
1377 else
1378 command_line.soname = optarg;
1379 break;
1380 case OPTION_SORT_COMMON:
1381 if (optarg == NULL
1382 || strcmp (optarg, N_("descending")) == 0)
1383 config.sort_common = sort_descending;
1384 else if (strcmp (optarg, N_("ascending")) == 0)
1385 config.sort_common = sort_ascending;
1386 else
1387 einfo (_("%F%P: invalid common section sorting option: %s\n"),
1388 optarg);
1389 break;
1390 case OPTION_SORT_SECTION:
1391 if (strcmp (optarg, N_("name")) == 0)
1392 sort_section = by_name;
1393 else if (strcmp (optarg, N_("alignment")) == 0)
1394 sort_section = by_alignment;
1395 else
1396 einfo (_("%F%P: invalid section sorting option: %s\n"),
1397 optarg);
1398 break;
1399 case OPTION_STATS:
1400 config.stats = true;
1401 break;
1402 case OPTION_NO_SYMBOLIC:
1403 opt_symbolic = symbolic_unset;
1404 break;
1405 case OPTION_SYMBOLIC:
1406 opt_symbolic = symbolic;
1407 break;
1408 case OPTION_SYMBOLIC_FUNCTIONS:
1409 opt_symbolic = symbolic_functions;
1410 break;
1411 case 't':
1412 ++trace_files;
1413 break;
1414 case 'T':
1415 previous_script_handle = saved_script_handle;
1416 ldfile_open_script_file (optarg);
1417 parser_input = input_script;
1418 yyparse ();
1419 previous_script_handle = NULL;
1420 break;
1421 case OPTION_DEFAULT_SCRIPT:
1422 command_line.default_script = optarg;
1423 break;
1424 case OPTION_SECTION_START:
1425 {
1426 char *optarg2;
1427 char *sec_name;
1428 int len;
1429
1430 /* Check for <something>=<somthing>... */
1431 optarg2 = strchr (optarg, '=');
1432 if (optarg2 == NULL)
1433 einfo (_("%F%P: invalid argument to option"
1434 " \"--section-start\"\n"));
1435
1436 optarg2++;
1437
1438 /* So far so good. Are all the args present? */
1439 if ((*optarg == '\0') || (*optarg2 == '\0'))
1440 einfo (_("%F%P: missing argument(s) to option"
1441 " \"--section-start\"\n"));
1442
1443 /* We must copy the section name as set_section_start
1444 doesn't do it for us. */
1445 len = optarg2 - optarg;
1446 sec_name = (char *) xmalloc (len);
1447 memcpy (sec_name, optarg, len - 1);
1448 sec_name[len - 1] = 0;
1449
1450 /* Then set it... */
1451 set_section_start (sec_name, optarg2);
1452 }
1453 break;
1454 case OPTION_TARGET_HELP:
1455 /* Mention any target specific options. */
1456 ldemul_list_emulation_options (stdout);
1457 exit (0);
1458 case OPTION_TBSS:
1459 set_segment_start (".bss", optarg);
1460 break;
1461 case OPTION_TDATA:
1462 set_segment_start (".data", optarg);
1463 break;
1464 case OPTION_TTEXT:
1465 set_segment_start (".text", optarg);
1466 break;
1467 case OPTION_TTEXT_SEGMENT:
1468 set_segment_start (".text-segment", optarg);
1469 break;
1470 case OPTION_TRODATA_SEGMENT:
1471 set_segment_start (".rodata-segment", optarg);
1472 break;
1473 case OPTION_TLDATA_SEGMENT:
1474 set_segment_start (".ldata-segment", optarg);
1475 break;
1476 case OPTION_TRADITIONAL_FORMAT:
1477 link_info.traditional_format = true;
1478 break;
1479 case OPTION_TASK_LINK:
1480 link_info.task_link = true;
1481 /* Fall through. */
1482 case OPTION_UR:
1483 if (bfd_link_pic (&link_info))
1484 einfo (_("%F%P: -r and %s may not be used together\n"),
1485 bfd_link_dll (&link_info) ? "-shared" : "-pie");
1486
1487 link_info.type = type_relocatable;
1488 config.build_constructors = true;
1489 config.magic_demand_paged = false;
1490 config.text_read_only = false;
1491 input_flags.dynamic = false;
1492 break;
1493 case 'u':
1494 ldlang_add_undef (optarg, true);
1495 break;
1496 case OPTION_REQUIRE_DEFINED_SYMBOL:
1497 ldlang_add_require_defined (optarg);
1498 break;
1499 case OPTION_UNIQUE:
1500 if (optarg != NULL)
1501 lang_add_unique (optarg);
1502 else
1503 config.unique_orphan_sections = true;
1504 break;
1505 case OPTION_VERBOSE:
1506 ldversion (1);
1507 version_printed = true;
1508 verbose = true;
1509 overflow_cutoff_limit = -2;
1510 if (optarg != NULL)
1511 {
1512 char *end;
1513 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1514 if (*end)
1515 einfo (_("%F%P: invalid number `%s'\n"), optarg);
1516 #if BFD_SUPPORTS_PLUGINS
1517 report_plugin_symbols = level > 1;
1518 #endif /* BFD_SUPPORTS_PLUGINS */
1519 }
1520 break;
1521 case 'v':
1522 ldversion (0);
1523 version_printed = true;
1524 break;
1525 case 'V':
1526 ldversion (1);
1527 version_printed = true;
1528 break;
1529 case OPTION_VERSION:
1530 ldversion (2);
1531 xexit (0);
1532 break;
1533 case OPTION_VERSION_SCRIPT:
1534 /* This option indicates a small script that only specifies
1535 version information. Read it, but don't assume that
1536 we've 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_version_script;
1544 yyparse ();
1545 }
1546 break;
1547 case OPTION_VERSION_EXPORTS_SECTION:
1548 /* This option records a version symbol to be applied to the
1549 symbols listed for export to be found in the object files
1550 .exports sections. */
1551 command_line.version_exports_section = optarg;
1552 break;
1553 case OPTION_DYNAMIC_LIST_DATA:
1554 opt_dynamic_list = dynamic_list_data;
1555 break;
1556 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1557 lang_append_dynamic_list_cpp_typeinfo ();
1558 if (opt_dynamic_list != dynamic_list_data)
1559 opt_dynamic_list = dynamic_list;
1560 break;
1561 case OPTION_DYNAMIC_LIST_CPP_NEW:
1562 lang_append_dynamic_list_cpp_new ();
1563 if (opt_dynamic_list != dynamic_list_data)
1564 opt_dynamic_list = dynamic_list;
1565 break;
1566 case OPTION_DYNAMIC_LIST:
1567 /* This option indicates a small script that only specifies
1568 a dynamic list. Read it, but don't assume that we've
1569 seen a linker script. */
1570 {
1571 FILE *hold_script_handle;
1572
1573 hold_script_handle = saved_script_handle;
1574 ldfile_open_command_file (optarg);
1575 saved_script_handle = hold_script_handle;
1576 parser_input = input_dynamic_list;
1577 current_dynamic_list_p = &link_info.dynamic_list;
1578 yyparse ();
1579 }
1580 if (opt_dynamic_list != dynamic_list_data)
1581 opt_dynamic_list = dynamic_list;
1582 break;
1583 case OPTION_EXPORT_DYNAMIC_SYMBOL:
1584 {
1585 struct bfd_elf_version_expr *expr
1586 = lang_new_vers_pattern (NULL, xstrdup (optarg), NULL,
1587 false);
1588 lang_append_dynamic_list (&export_list, expr);
1589 }
1590 break;
1591 case OPTION_EXPORT_DYNAMIC_SYMBOL_LIST:
1592 /* This option indicates a small script that only specifies
1593 an export list. Read it, but don't assume that we've
1594 seen a linker script. */
1595 {
1596 FILE *hold_script_handle;
1597
1598 hold_script_handle = saved_script_handle;
1599 ldfile_open_command_file (optarg);
1600 saved_script_handle = hold_script_handle;
1601 parser_input = input_dynamic_list;
1602 current_dynamic_list_p = &export_list;
1603 yyparse ();
1604 }
1605 break;
1606 case OPTION_WARN_COMMON:
1607 config.warn_common = true;
1608 break;
1609 case OPTION_WARN_CONSTRUCTORS:
1610 config.warn_constructors = true;
1611 break;
1612 case OPTION_WARN_FATAL:
1613 config.fatal_warnings = true;
1614 break;
1615 case OPTION_NO_WARN_FATAL:
1616 config.fatal_warnings = false;
1617 break;
1618 case OPTION_NO_WARNINGS:
1619 case 'w':
1620 config.no_warnings = true;
1621 config.fatal_warnings = false;
1622 break;
1623 case OPTION_WARN_MULTIPLE_GP:
1624 config.warn_multiple_gp = true;
1625 break;
1626 case OPTION_WARN_ONCE:
1627 config.warn_once = true;
1628 break;
1629 case OPTION_WARN_SECTION_ALIGN:
1630 config.warn_section_align = true;
1631 break;
1632 case OPTION_WARN_TEXTREL:
1633 link_info.textrel_check = textrel_check_warning;
1634 break;
1635 case OPTION_WARN_ALTERNATE_EM:
1636 link_info.warn_alternate_em = true;
1637 break;
1638 case OPTION_WHOLE_ARCHIVE:
1639 input_flags.whole_archive = true;
1640 break;
1641 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1642 input_flags.add_DT_NEEDED_for_dynamic = true;
1643 break;
1644 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1645 input_flags.add_DT_NEEDED_for_dynamic = false;
1646 break;
1647 case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1648 input_flags.add_DT_NEEDED_for_regular = true;
1649 break;
1650 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1651 input_flags.add_DT_NEEDED_for_regular = false;
1652 break;
1653 case OPTION_WRAP:
1654 add_wrap (optarg);
1655 break;
1656 case OPTION_IGNORE_UNRESOLVED_SYMBOL:
1657 add_ignoresym (&link_info, optarg);
1658 break;
1659 case OPTION_DISCARD_NONE:
1660 link_info.discard = discard_none;
1661 break;
1662 case 'X':
1663 link_info.discard = discard_l;
1664 break;
1665 case 'x':
1666 link_info.discard = discard_all;
1667 break;
1668 case 'Y':
1669 if (startswith (optarg, "P,"))
1670 optarg += 2;
1671 free (default_dirlist);
1672 default_dirlist = xstrdup (optarg);
1673 break;
1674 case 'y':
1675 add_ysym (optarg);
1676 break;
1677 case OPTION_SPARE_DYNAMIC_TAGS:
1678 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1679 break;
1680 case OPTION_SPLIT_BY_RELOC:
1681 if (optarg != NULL)
1682 config.split_by_reloc = strtoul (optarg, NULL, 0);
1683 else
1684 config.split_by_reloc = 32768;
1685 break;
1686 case OPTION_SPLIT_BY_FILE:
1687 if (optarg != NULL)
1688 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1689 else
1690 config.split_by_file = 1;
1691 break;
1692 case OPTION_CHECK_SECTIONS:
1693 command_line.check_section_addresses = 1;
1694 break;
1695 case OPTION_NO_CHECK_SECTIONS:
1696 command_line.check_section_addresses = 0;
1697 break;
1698 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1699 command_line.accept_unknown_input_arch = true;
1700 break;
1701 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1702 command_line.accept_unknown_input_arch = false;
1703 break;
1704 case '(':
1705 lang_enter_group ();
1706 ingroup++;
1707 break;
1708 case ')':
1709 if (! ingroup)
1710 einfo (_("%F%P: group ended before it began (--help for usage)\n"));
1711
1712 lang_leave_group ();
1713 ingroup--;
1714 break;
1715
1716 case OPTION_INIT:
1717 link_info.init_function = optarg;
1718 break;
1719
1720 case OPTION_FINI:
1721 link_info.fini_function = optarg;
1722 break;
1723
1724 case OPTION_REMAP_INPUTS_FILE:
1725 if (! ldfile_add_remap_file (optarg))
1726 einfo (_("%F%P: failed to add remap file %s\n"), optarg);
1727 break;
1728
1729 case OPTION_REMAP_INPUTS:
1730 {
1731 char *optarg2 = strchr (optarg, '=');
1732 if (optarg2 == NULL)
1733 /* FIXME: Should we allow --remap-inputs=@myfile as a synonym
1734 for --remap-inputs-file=myfile ? */
1735 einfo (_("%F%P: invalid argument to option --remap-inputs\n"));
1736 size_t len = optarg2 - optarg;
1737 char * pattern = xmalloc (len + 1);
1738 memcpy (pattern, optarg, len);
1739 pattern[len] = 0;
1740 ldfile_add_remap (pattern, optarg2 + 1);
1741 free (pattern);
1742 }
1743 break;
1744
1745 case OPTION_REDUCE_MEMORY_OVERHEADS:
1746 link_info.reduce_memory_overheads = true;
1747 if (config.hash_table_size == 0)
1748 config.hash_table_size = 1021;
1749 break;
1750
1751 case OPTION_MAX_CACHE_SIZE:
1752 {
1753 char *end;
1754 bfd_size_type cache_size = strtoul (optarg, &end, 0);
1755 if (*end != '\0')
1756 einfo (_("%F%P: invalid cache memory size: %s\n"),
1757 optarg);
1758 link_info.max_cache_size = cache_size;
1759 }
1760 break;
1761
1762 case OPTION_HASH_SIZE:
1763 {
1764 bfd_size_type new_size;
1765
1766 new_size = strtoul (optarg, NULL, 0);
1767 if (new_size)
1768 config.hash_table_size = new_size;
1769 else
1770 einfo (_("%X%P: --hash-size needs a numeric argument\n"));
1771 }
1772 break;
1773
1774 case OPTION_PUSH_STATE:
1775 input_flags.pushed = xmemdup (&input_flags,
1776 sizeof (input_flags),
1777 sizeof (input_flags));
1778 break;
1779
1780 case OPTION_POP_STATE:
1781 if (input_flags.pushed == NULL)
1782 einfo (_("%F%P: no state pushed before popping\n"));
1783 else
1784 {
1785 struct lang_input_statement_flags *oldp = input_flags.pushed;
1786 memcpy (&input_flags, oldp, sizeof (input_flags));
1787 free (oldp);
1788 }
1789 break;
1790
1791 case OPTION_PRINT_MEMORY_USAGE:
1792 command_line.print_memory_usage = true;
1793 break;
1794
1795 case OPTION_ORPHAN_HANDLING:
1796 if (strcasecmp (optarg, "place") == 0)
1797 config.orphan_handling = orphan_handling_place;
1798 else if (strcasecmp (optarg, "warn") == 0)
1799 config.orphan_handling = orphan_handling_warn;
1800 else if (strcasecmp (optarg, "error") == 0)
1801 config.orphan_handling = orphan_handling_error;
1802 else if (strcasecmp (optarg, "discard") == 0)
1803 config.orphan_handling = orphan_handling_discard;
1804 else
1805 einfo (_("%F%P: invalid argument to option"
1806 " \"--orphan-handling\"\n"));
1807 break;
1808
1809 case OPTION_NO_PRINT_MAP_DISCARDED:
1810 config.print_map_discarded = false;
1811 break;
1812
1813 case OPTION_PRINT_MAP_DISCARDED:
1814 config.print_map_discarded = true;
1815 break;
1816
1817 case OPTION_NO_PRINT_MAP_LOCALS:
1818 config.print_map_locals = false;
1819 break;
1820
1821 case OPTION_PRINT_MAP_LOCALS:
1822 config.print_map_locals = true;
1823 break;
1824
1825 case OPTION_DEPENDENCY_FILE:
1826 config.dependency_file = optarg;
1827 break;
1828
1829 case OPTION_CTF_VARIABLES:
1830 config.ctf_variables = true;
1831 break;
1832
1833 case OPTION_NO_CTF_VARIABLES:
1834 config.ctf_variables = false;
1835 break;
1836
1837 case OPTION_CTF_SHARE_TYPES:
1838 if (strcmp (optarg, "share-unconflicted") == 0)
1839 config.ctf_share_duplicated = false;
1840 else if (strcmp (optarg, "share-duplicated") == 0)
1841 config.ctf_share_duplicated = true;
1842 else
1843 einfo (_("%F%P: bad --ctf-share-types option: %s\n"), optarg);
1844 break;
1845 }
1846 }
1847
1848 free (really_longopts);
1849 free (longopts);
1850 free (shortopts);
1851
1852 /* Run a couple of checks on the map filename. */
1853 if (config.map_filename)
1854 {
1855 char * new_name = NULL;
1856 char * percent;
1857 int res = 0;
1858
1859 if (config.map_filename[0] == 0)
1860 {
1861 einfo (_("%P: no file/directory name provided for map output; ignored\n"));
1862 config.map_filename = NULL;
1863 }
1864 else if (strcmp (config.map_filename, "-") == 0)
1865 ; /* Write to stdout. Handled in main(). */
1866 else if ((percent = strchr (config.map_filename, '%')) != NULL)
1867 {
1868 /* FIXME: Check for a second % character and issue an error ? */
1869
1870 /* Construct a map file by replacing the % character with the (full)
1871 output filename. If the % character was the last character in
1872 the original map filename then add a .map extension. */
1873 percent[0] = 0;
1874 res = asprintf (&new_name, "%s%s%s", config.map_filename,
1875 output_filename,
1876 percent[1] ? percent + 1 : ".map");
1877
1878 /* FIXME: Should we ensure that any directory components in new_name exist ? */
1879 }
1880 else
1881 {
1882 struct stat s;
1883
1884 /* If the map filename is actually a directory then create
1885 a file inside it, based upon the output filename. */
1886 if (stat (config.map_filename, &s) < 0)
1887 {
1888 if (errno != ENOENT)
1889 einfo (_("%P: cannot stat linker map file: %E\n"));
1890 }
1891 else if (S_ISDIR (s.st_mode))
1892 {
1893 char lastc = config.map_filename[strlen (config.map_filename) - 1];
1894 res = asprintf (&new_name, "%s%s%s.map",
1895 config.map_filename,
1896 IS_DIR_SEPARATOR (lastc) ? "" : "/",
1897 lbasename (output_filename));
1898 }
1899 else if (! S_ISREG (s.st_mode))
1900 {
1901 einfo (_("%P: linker map file is not a regular file\n"));
1902 config.map_filename = NULL;
1903 }
1904 /* else FIXME: Check write permission ? */
1905 }
1906
1907 if (res < 0)
1908 {
1909 /* If the asprintf failed then something is probably very
1910 wrong. Better to halt now rather than continue on
1911 into more problems. */
1912 einfo (_("%P%F: cannot create name for linker map file: %E\n"));
1913 }
1914 else if (new_name != NULL)
1915 {
1916 /* This is a trivial memory leak. */
1917 config.map_filename = new_name;
1918 }
1919 }
1920
1921 if (command_line.soname && command_line.soname[0] == '\0')
1922 {
1923 einfo (_("%P: SONAME must not be empty string; ignored\n"));
1924 command_line.soname = NULL;
1925 }
1926
1927 while (ingroup)
1928 {
1929 einfo (_("%P: missing --end-group; added as last command line option\n"));
1930 lang_leave_group ();
1931 ingroup--;
1932 }
1933
1934 if (default_dirlist != NULL)
1935 {
1936 set_default_dirlist (default_dirlist);
1937 free (default_dirlist);
1938 }
1939
1940 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1941 /* FIXME: Should we allow emulations a chance to set this ? */
1942 link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
1943
1944 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1945 /* FIXME: Should we allow emulations a chance to set this ? */
1946 link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
1947
1948 if (bfd_link_relocatable (&link_info)
1949 && command_line.check_section_addresses < 0)
1950 command_line.check_section_addresses = 0;
1951
1952 if (export_list)
1953 {
1954 struct bfd_elf_version_expr *head = export_list->head.list;
1955 struct bfd_elf_version_expr *next;
1956
1957 /* For --export-dynamic-symbol[-list]:
1958 1. When building executable, treat like --dynamic-list.
1959 2. When building shared object:
1960 a. If -Bsymbolic or --dynamic-list are used, treat like
1961 --dynamic-list.
1962 b. Otherwise, ignored.
1963 */
1964 if (!bfd_link_relocatable (&link_info)
1965 && (bfd_link_executable (&link_info)
1966 || opt_symbolic != symbolic_unset
1967 || opt_dynamic_list != dynamic_list_unset))
1968 {
1969 /* Append the export list to link_info.dynamic_list. */
1970 if (link_info.dynamic_list)
1971 {
1972 for (next = head; next->next != NULL; next = next->next)
1973 ;
1974 next->next = link_info.dynamic_list->head.list;
1975 link_info.dynamic_list->head.list = head;
1976 }
1977 else
1978 link_info.dynamic_list = export_list;
1979
1980 if (opt_dynamic_list != dynamic_list_data)
1981 opt_dynamic_list = dynamic_list;
1982 }
1983 else
1984 {
1985 /* Free the export list. */
1986 for (; head->next != NULL; head = next)
1987 {
1988 next = head->next;
1989 free (head);
1990 }
1991 free (export_list);
1992 }
1993 }
1994
1995 switch (opt_dynamic_list)
1996 {
1997 case dynamic_list_unset:
1998 break;
1999 case dynamic_list_data:
2000 link_info.dynamic_data = true;
2001 /* Fall through. */
2002 case dynamic_list:
2003 link_info.dynamic = true;
2004 opt_symbolic = symbolic_unset;
2005 break;
2006 }
2007
2008 /* -Bsymbolic and -Bsymbols-functions are for shared library output. */
2009 if (bfd_link_dll (&link_info))
2010 switch (opt_symbolic)
2011 {
2012 case symbolic_unset:
2013 break;
2014 case symbolic:
2015 link_info.symbolic = true;
2016 if (link_info.dynamic_list)
2017 {
2018 struct bfd_elf_version_expr *ent, *next;
2019 for (ent = link_info.dynamic_list->head.list; ent; ent = next)
2020 {
2021 next = ent->next;
2022 free (ent);
2023 }
2024 free (link_info.dynamic_list);
2025 link_info.dynamic_list = NULL;
2026 }
2027 break;
2028 case symbolic_functions:
2029 link_info.dynamic = true;
2030 link_info.dynamic_data = true;
2031 break;
2032 }
2033
2034 /* -z nosectionheader implies --strip-all. */
2035 if (config.no_section_header)
2036 {
2037 if (bfd_link_relocatable (&link_info))
2038 einfo (_("%F%P: -r and -z nosectionheader may not be used together\n"));
2039
2040 link_info.strip = strip_all;
2041 }
2042
2043 if (!bfd_link_dll (&link_info))
2044 {
2045 if (command_line.filter_shlib)
2046 einfo (_("%F%P: -F may not be used without -shared\n"));
2047 if (command_line.auxiliary_filters)
2048 einfo (_("%F%P: -f may not be used without -shared\n"));
2049 }
2050
2051 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
2052 don't see how else this can be handled, since in this case we
2053 must preserve all externally visible symbols. */
2054 if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all)
2055 {
2056 link_info.strip = strip_debugger;
2057 if (link_info.discard == discard_sec_merge)
2058 link_info.discard = discard_all;
2059 }
2060 }
2061
2062 /* Add the (colon-separated) elements of DIRLIST_PTR to the
2063 library search path. */
2064
2065 static void
set_default_dirlist(char * dirlist_ptr)2066 set_default_dirlist (char *dirlist_ptr)
2067 {
2068 char *p;
2069
2070 while (1)
2071 {
2072 p = strchr (dirlist_ptr, PATH_SEPARATOR);
2073 if (p != NULL)
2074 *p = '\0';
2075 if (*dirlist_ptr != '\0')
2076 ldfile_add_library_path (dirlist_ptr, true);
2077 if (p == NULL)
2078 break;
2079 dirlist_ptr = p + 1;
2080 }
2081 }
2082
2083 static void
set_section_start(char * sect,char * valstr)2084 set_section_start (char *sect, char *valstr)
2085 {
2086 const char *end;
2087 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
2088 if (*end)
2089 einfo (_("%F%P: invalid hex number `%s'\n"), valstr);
2090 lang_section_start (sect, exp_intop (val), NULL);
2091 }
2092
2093 static void
set_segment_start(const char * section,char * valstr)2094 set_segment_start (const char *section, char *valstr)
2095 {
2096 const char *name;
2097 const char *end;
2098 segment_type *seg;
2099
2100 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
2101 if (*end)
2102 einfo (_("%F%P: invalid hex number `%s'\n"), valstr);
2103 /* If we already have an entry for this segment, update the existing
2104 value. */
2105 name = section + 1;
2106 for (seg = segments; seg; seg = seg->next)
2107 if (strcmp (seg->name, name) == 0)
2108 {
2109 seg->value = val;
2110 lang_section_start (section, exp_intop (val), seg);
2111 return;
2112 }
2113 /* There was no existing value so we must create a new segment
2114 entry. */
2115 seg = stat_alloc (sizeof (*seg));
2116 seg->name = name;
2117 seg->value = val;
2118 seg->used = false;
2119 /* Add it to the linked list of segments. */
2120 seg->next = segments;
2121 segments = seg;
2122 /* Historically, -Ttext and friends set the base address of a
2123 particular section. For backwards compatibility, we still do
2124 that. If a SEGMENT_START directive is seen, the section address
2125 assignment will be disabled. */
2126 lang_section_start (section, exp_intop (val), seg);
2127 }
2128
2129 static void
elf_shlib_list_options(FILE * file)2130 elf_shlib_list_options (FILE *file)
2131 {
2132 fprintf (file, _("\
2133 --audit=AUDITLIB Specify a library to use for auditing\n"));
2134 fprintf (file, _("\
2135 -Bgroup Selects group name lookup rules for DSO\n"));
2136 fprintf (file, _("\
2137 --disable-new-dtags Disable new dynamic tags\n"));
2138 fprintf (file, _("\
2139 --enable-new-dtags Enable new dynamic tags\n"));
2140 fprintf (file, _("\
2141 --eh-frame-hdr Create .eh_frame_hdr section\n"));
2142 fprintf (file, _("\
2143 --no-eh-frame-hdr Do not create .eh_frame_hdr section\n"));
2144 fprintf (file, _("\
2145 --exclude-libs=LIBS Make all symbols in LIBS hidden\n"));
2146 fprintf (file, _("\
2147 --hash-style=STYLE Set hash style to sysv/gnu/both. Default: "));
2148 if (DEFAULT_EMIT_SYSV_HASH)
2149 {
2150 /* Note - these strings are not translated as
2151 they are keywords not descriptive text. */
2152 if (DEFAULT_EMIT_GNU_HASH)
2153 fprintf (file, "both\n");
2154 else
2155 fprintf (file, "sysv\n");
2156 }
2157 else
2158 {
2159 if (DEFAULT_EMIT_GNU_HASH)
2160 fprintf (file, "gnu\n");
2161 else
2162 /* FIXME: Can this happen ? */
2163 fprintf (file, "none\n");
2164 }
2165 fprintf (file, _("\
2166 -P AUDITLIB, --depaudit=AUDITLIB\n" "\
2167 Specify a library to use for auditing dependencies\n"));
2168 fprintf (file, _("\
2169 -z combreloc Merge dynamic relocs into one section and sort\n"));
2170 fprintf (file, _("\
2171 -z nocombreloc Don't merge dynamic relocs into one section\n"));
2172 fprintf (file, _("\
2173 -z global Make symbols in DSO available for subsequently\n\
2174 loaded objects\n"));
2175 fprintf (file, _("\
2176 -z initfirst Mark DSO to be initialized first at runtime\n"));
2177 fprintf (file, _("\
2178 -z interpose Mark object to interpose all DSOs but executable\n"));
2179 fprintf (file, _("\
2180 -z unique Mark DSO to be loaded at most once by default, and only in the main namespace\n"));
2181 fprintf (file, _("\
2182 -z nounique Don't mark DSO as a loadable at most once\n"));
2183 fprintf (file, _("\
2184 -z lazy Mark object lazy runtime binding (default)\n"));
2185 fprintf (file, _("\
2186 -z loadfltr Mark object requiring immediate process\n"));
2187 fprintf (file, _("\
2188 -z nocopyreloc Don't create copy relocs\n"));
2189 fprintf (file, _("\
2190 -z nodefaultlib Mark object not to use default search paths\n"));
2191 fprintf (file, _("\
2192 -z nodelete Mark DSO non-deletable at runtime\n"));
2193 fprintf (file, _("\
2194 -z nodlopen Mark DSO not available to dlopen\n"));
2195 fprintf (file, _("\
2196 -z nodump Mark DSO not available to dldump\n"));
2197 fprintf (file, _("\
2198 -z now Mark object non-lazy runtime binding\n"));
2199 fprintf (file, _("\
2200 -z origin Mark object requiring immediate $ORIGIN\n\
2201 processing at runtime\n"));
2202 #if DEFAULT_LD_Z_RELRO
2203 fprintf (file, _("\
2204 -z relro Create RELRO program header (default)\n"));
2205 fprintf (file, _("\
2206 -z norelro Don't create RELRO program header\n"));
2207 #else
2208 fprintf (file, _("\
2209 -z relro Create RELRO program header\n"));
2210 fprintf (file, _("\
2211 -z norelro Don't create RELRO program header (default)\n"));
2212 #endif
2213 #if DEFAULT_LD_Z_SEPARATE_CODE
2214 fprintf (file, _("\
2215 -z separate-code Create separate code program header (default)\n"));
2216 fprintf (file, _("\
2217 -z noseparate-code Don't create separate code program header\n"));
2218 #else
2219 fprintf (file, _("\
2220 -z separate-code Create separate code program header\n"));
2221 fprintf (file, _("\
2222 -z noseparate-code Don't create separate code program header (default)\n"));
2223 #endif
2224 fprintf (file, _("\
2225 -z common Generate common symbols with STT_COMMON type\n"));
2226 fprintf (file, _("\
2227 -z nocommon Generate common symbols with STT_OBJECT type\n"));
2228 if (link_info.textrel_check == textrel_check_error)
2229 fprintf (file, _("\
2230 -z text Treat DT_TEXTREL in output as error (default)\n"));
2231 else
2232 fprintf (file, _("\
2233 -z text Treat DT_TEXTREL in output as error\n"));
2234 if (link_info.textrel_check == textrel_check_none)
2235 {
2236 fprintf (file, _("\
2237 -z notext Don't treat DT_TEXTREL in output as error (default)\n"));
2238 fprintf (file, _("\
2239 -z textoff Don't treat DT_TEXTREL in output as error (default)\n"));
2240 }
2241 else
2242 {
2243 fprintf (file, _("\
2244 -z notext Don't treat DT_TEXTREL in output as error\n"));
2245 fprintf (file, _("\
2246 -z textoff Don't treat DT_TEXTREL in output as error\n"));
2247 }
2248 }
2249
2250 static void
elf_static_list_options(FILE * file)2251 elf_static_list_options (FILE *file)
2252 {
2253 fprintf (file, _("\
2254 --build-id[=STYLE] Generate build ID note\n"));
2255 fprintf (file, _("\
2256 --package-metadata[=JSON] Generate package metadata note\n"));
2257 fprintf (file, _("\
2258 --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi|zstd]\n\
2259 Compress DWARF debug sections\n"));
2260 fprintf (file, _("\
2261 Default: %s\n"),
2262 bfd_get_compression_algorithm_name (config.compress_debug));
2263 fprintf (file, _("\
2264 -z common-page-size=SIZE Set common page size to SIZE\n"));
2265 fprintf (file, _("\
2266 -z max-page-size=SIZE Set maximum page size to SIZE\n"));
2267 fprintf (file, _("\
2268 -z defs Report unresolved symbols in object files\n"));
2269 fprintf (file, _("\
2270 -z undefs Ignore unresolved symbols in object files\n"));
2271 fprintf (file, _("\
2272 -z muldefs Allow multiple definitions\n"));
2273 fprintf (file, _("\
2274 -z stack-size=SIZE Set size of stack segment\n"));
2275
2276 fprintf (file, _("\
2277 -z execstack Mark executable as requiring executable stack\n"));
2278 fprintf (file, _("\
2279 -z noexecstack Mark executable as not requiring executable stack\n"));
2280 fprintf (file, _("\
2281 --warn-execstack-objects Generate a warning if an object file requests an executable stack\n"));
2282 #if DEFAULT_LD_WARN_EXECSTACK == 0
2283 fprintf (file, _("\
2284 --warn-execstack Generate a warning if creating an executable stack\n"));
2285 #else
2286 fprintf (file, _("\
2287 --warn-execstack Generate a warning if creating an executable stack (default)\n"));
2288 #endif
2289 #if DEFAULT_LD_WARN_EXECSTACK == 0
2290 fprintf (file, _("\
2291 --no-warn-execstack Do not generate a warning if creating an executable stack (default)\n"));
2292 #else
2293 fprintf (file, _("\
2294 --no-warn-execstack Do not generate a warning if creating an executable stack\n"));
2295 #endif
2296 fprintf (file, _("\
2297 --error-execstack Turn warnings about executable stacks into errors\n"));
2298 fprintf (file, _("\
2299 --no-error-execstack Do not turn warnings about executable stacks into errors\n"));
2300
2301 #if DEFAULT_LD_WARN_RWX_SEGMENTS
2302 fprintf (file, _("\
2303 --warn-rwx-segments Generate a warning if a LOAD segment has RWX permissions (default)\n"));
2304 fprintf (file, _("\
2305 --no-warn-rwx-segments Do not generate a warning if a LOAD segments has RWX permissions\n"));
2306 #else
2307 fprintf (file, _("\
2308 --warn-rwx-segments Generate a warning if a LOAD segment has RWX permissions\n"));
2309 fprintf (file, _("\
2310 --no-warn-rwx-segments Do not generate a warning if a LOAD segments has RWX permissions (default)\n"));
2311 #endif
2312 fprintf (file, _("\
2313 --error-rwx-segments Turn warnings about loadable RWX segments into errors\n"));
2314 fprintf (file, _("\
2315 --no-error-rwx-segments Do not turn warnings about loadable RWX segments into errors\n"));
2316
2317 fprintf (file, _("\
2318 -z unique-symbol Avoid duplicated local symbol names\n"));
2319 fprintf (file, _("\
2320 -z nounique-symbol Keep duplicated local symbol names (default)\n"));
2321 fprintf (file, _("\
2322 -z globalaudit Mark executable requiring global auditing\n"));
2323 fprintf (file, _("\
2324 -z start-stop-gc Enable garbage collection on __start/__stop\n"));
2325 fprintf (file, _("\
2326 -z nostart-stop-gc Don't garbage collect __start/__stop (default)\n"));
2327 fprintf (file, _("\
2328 -z start-stop-visibility=V Set visibility of built-in __start/__stop symbols\n\
2329 to DEFAULT, PROTECTED, HIDDEN or INTERNAL\n"));
2330 fprintf (file, _("\
2331 -z sectionheader Generate section header (default)\n"));
2332 fprintf (file, _("\
2333 -z nosectionheader Do not generate section header\n"));
2334 }
2335
2336 static void
elf_plt_unwind_list_options(FILE * file)2337 elf_plt_unwind_list_options (FILE *file)
2338 {
2339 fprintf (file, _("\
2340 --ld-generated-unwind-info Generate exception handling info for PLT\n"));
2341 fprintf (file, _("\
2342 --no-ld-generated-unwind-info\n\
2343 Don't generate exception handling info for PLT\n"));
2344 }
2345
2346 static void
ld_list_options(FILE * file,bool elf,bool shlib,bool plt_unwind)2347 ld_list_options (FILE *file, bool elf, bool shlib, bool plt_unwind)
2348 {
2349 if (!elf)
2350 return;
2351 printf (_("ELF emulations:\n"));
2352 if (plt_unwind)
2353 elf_plt_unwind_list_options (file);
2354 elf_static_list_options (file);
2355 if (shlib)
2356 elf_shlib_list_options (file);
2357 }
2358
2359
2360 /* Print help messages for the options. */
2361
2362 static void
help(void)2363 help (void)
2364 {
2365 unsigned i;
2366 const char **targets, **pp;
2367 int len;
2368
2369 printf (_("Usage: %s [options] file...\n"), program_name);
2370
2371 printf (_("Options:\n"));
2372 for (i = 0; i < OPTION_COUNT; i++)
2373 {
2374 if (ld_options[i].doc != NULL)
2375 {
2376 bool comma;
2377 unsigned j;
2378
2379 printf (" ");
2380
2381 comma = false;
2382 len = 2;
2383
2384 j = i;
2385 do
2386 {
2387 if (ld_options[j].shortopt != '\0'
2388 && ld_options[j].control != NO_HELP)
2389 {
2390 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
2391 len += (comma ? 2 : 0) + 2;
2392 if (ld_options[j].arg != NULL)
2393 {
2394 if (ld_options[j].opt.has_arg != optional_argument)
2395 {
2396 printf (" ");
2397 ++len;
2398 }
2399 printf ("%s", _(ld_options[j].arg));
2400 len += strlen (_(ld_options[j].arg));
2401 }
2402 comma = true;
2403 }
2404 ++j;
2405 }
2406 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
2407
2408 j = i;
2409 do
2410 {
2411 if (ld_options[j].opt.name != NULL
2412 && ld_options[j].control != NO_HELP)
2413 {
2414 int two_dashes =
2415 (ld_options[j].control == TWO_DASHES
2416 || ld_options[j].control == EXACTLY_TWO_DASHES);
2417
2418 printf ("%s-%s%s",
2419 comma ? ", " : "",
2420 two_dashes ? "-" : "",
2421 ld_options[j].opt.name);
2422 len += ((comma ? 2 : 0)
2423 + 1
2424 + (two_dashes ? 1 : 0)
2425 + strlen (ld_options[j].opt.name));
2426 if (ld_options[j].arg != NULL)
2427 {
2428 printf (" %s", _(ld_options[j].arg));
2429 len += 1 + strlen (_(ld_options[j].arg));
2430 }
2431 comma = true;
2432 }
2433 ++j;
2434 }
2435 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
2436
2437 if (len >= 30)
2438 {
2439 printf ("\n");
2440 len = 0;
2441 }
2442
2443 for (; len < 30; len++)
2444 putchar (' ');
2445
2446 printf ("%s\n", _(ld_options[i].doc));
2447 }
2448 }
2449 printf (_(" @FILE"));
2450 for (len = strlen (" @FILE"); len < 30; len++)
2451 putchar (' ');
2452 printf (_("Read options from FILE\n"));
2453
2454 /* Note: Various tools (such as libtool) depend upon the
2455 format of the listings below - do not change them. */
2456 /* xgettext:c-format */
2457 printf (_("%s: supported targets:"), program_name);
2458 targets = bfd_target_list ();
2459 for (pp = targets; *pp != NULL; pp++)
2460 printf (" %s", *pp);
2461 free (targets);
2462 printf ("\n");
2463
2464 /* xgettext:c-format */
2465 printf (_("%s: supported emulations: "), program_name);
2466 ldemul_list_emulations (stdout);
2467 printf ("\n");
2468
2469 /* xgettext:c-format */
2470 printf (_("%s: emulation specific options:\n"), program_name);
2471 ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS,
2472 ELF_PLT_UNWIND_LIST_OPTIONS);
2473 ldemul_list_emulation_options (stdout);
2474 printf ("\n");
2475
2476 if (REPORT_BUGS_TO[0])
2477 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
2478 }
2479