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bfd/
[binutils.git] / ld / lexsup.c
blob20e0271e78fa3dbaa1dae2c65ee02a5bb221a676
1 /* Parse options for the GNU linker.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2011
4 Free Software Foundation, Inc.
5
6 This file is part of the GNU Binutils.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
22
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "bfdver.h"
26 #include "libiberty.h"
27 #include <stdio.h>
28 #include <string.h>
29 #include "safe-ctype.h"
30 #include "getopt.h"
31 #include "bfdlink.h"
32 #include "ld.h"
33 #include "ldmain.h"
34 #include "ldmisc.h"
35 #include "ldexp.h"
36 #include "ldlang.h"
37 #include <ldgram.h>
38 #include "ldlex.h"
39 #include "ldfile.h"
40 #include "ldver.h"
41 #include "ldemul.h"
42 #include "demangle.h"
43 #ifdef ENABLE_PLUGINS
44 #include "plugin.h"
45 #endif /* ENABLE_PLUGINS */
46
47 #ifndef PATH_SEPARATOR
48 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
49 #define PATH_SEPARATOR ';'
50 #else
51 #define PATH_SEPARATOR ':'
52 #endif
53 #endif
54
55 /* Somewhere above, sys/stat.h got included . . . . */
56 #if !defined(S_ISDIR) && defined(S_IFDIR)
57 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
58 #endif
59
60 static void set_default_dirlist (char *);
61 static void set_section_start (char *, char *);
62 static void set_segment_start (const char *, char *);
63 static void help (void);
64
65 /* Non-zero if we are processing a --defsym from the command line. */
66 int parsing_defsym = 0;
67
68 /* Codes used for the long options with no short synonyms. 150 isn't
69 special; it's just an arbitrary non-ASCII char value. */
70 enum option_values
71 {
72 OPTION_ASSERT = 150,
73 OPTION_CALL_SHARED,
74 OPTION_CREF,
75 OPTION_DEFSYM,
76 OPTION_DEMANGLE,
77 OPTION_DYNAMIC_LINKER,
78 OPTION_SYSROOT,
79 OPTION_EB,
80 OPTION_EL,
81 OPTION_EMBEDDED_RELOCS,
82 OPTION_EXPORT_DYNAMIC,
83 OPTION_NO_EXPORT_DYNAMIC,
84 OPTION_HELP,
85 OPTION_IGNORE,
86 OPTION_MAP,
87 OPTION_NO_DEMANGLE,
88 OPTION_NO_KEEP_MEMORY,
89 OPTION_NO_WARN_MISMATCH,
90 OPTION_NO_WARN_SEARCH_MISMATCH,
91 OPTION_NOINHIBIT_EXEC,
92 OPTION_NON_SHARED,
93 OPTION_NO_WHOLE_ARCHIVE,
94 OPTION_OFORMAT,
95 OPTION_RELAX,
96 OPTION_NO_RELAX,
97 OPTION_RETAIN_SYMBOLS_FILE,
98 OPTION_RPATH,
99 OPTION_RPATH_LINK,
100 OPTION_SHARED,
101 OPTION_SONAME,
102 OPTION_SORT_COMMON,
103 OPTION_SORT_SECTION,
104 OPTION_STATS,
105 OPTION_SYMBOLIC,
106 OPTION_SYMBOLIC_FUNCTIONS,
107 OPTION_TASK_LINK,
108 OPTION_TBSS,
109 OPTION_TDATA,
110 OPTION_TTEXT,
111 OPTION_TTEXT_SEGMENT,
112 OPTION_TRADITIONAL_FORMAT,
113 OPTION_UR,
114 OPTION_VERBOSE,
115 OPTION_VERSION,
116 OPTION_VERSION_SCRIPT,
117 OPTION_VERSION_EXPORTS_SECTION,
118 OPTION_DYNAMIC_LIST,
119 OPTION_DYNAMIC_LIST_CPP_NEW,
120 OPTION_DYNAMIC_LIST_CPP_TYPEINFO,
121 OPTION_DYNAMIC_LIST_DATA,
122 OPTION_WARN_COMMON,
123 OPTION_WARN_CONSTRUCTORS,
124 OPTION_WARN_FATAL,
125 OPTION_NO_WARN_FATAL,
126 OPTION_WARN_MULTIPLE_GP,
127 OPTION_WARN_ONCE,
128 OPTION_WARN_SECTION_ALIGN,
129 OPTION_SPLIT_BY_RELOC,
130 OPTION_SPLIT_BY_FILE ,
131 OPTION_WHOLE_ARCHIVE,
132 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC,
133 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC,
134 OPTION_ADD_DT_NEEDED_FOR_REGULAR,
135 OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR,
136 OPTION_WRAP,
137 OPTION_FORCE_EXE_SUFFIX,
138 OPTION_GC_SECTIONS,
139 OPTION_NO_GC_SECTIONS,
140 OPTION_PRINT_GC_SECTIONS,
141 OPTION_NO_PRINT_GC_SECTIONS,
142 OPTION_HASH_SIZE,
143 OPTION_CHECK_SECTIONS,
144 OPTION_NO_CHECK_SECTIONS,
145 OPTION_NO_UNDEFINED,
146 OPTION_INIT,
147 OPTION_FINI,
148 OPTION_SECTION_START,
149 OPTION_UNIQUE,
150 OPTION_TARGET_HELP,
151 OPTION_ALLOW_SHLIB_UNDEFINED,
152 OPTION_NO_ALLOW_SHLIB_UNDEFINED,
153 OPTION_ALLOW_MULTIPLE_DEFINITION,
154 OPTION_NO_UNDEFINED_VERSION,
155 OPTION_DEFAULT_SYMVER,
156 OPTION_DEFAULT_IMPORTED_SYMVER,
157 OPTION_DISCARD_NONE,
158 OPTION_SPARE_DYNAMIC_TAGS,
159 OPTION_NO_DEFINE_COMMON,
160 OPTION_NOSTDLIB,
161 OPTION_NO_OMAGIC,
162 OPTION_STRIP_DISCARDED,
163 OPTION_NO_STRIP_DISCARDED,
164 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
165 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
166 OPTION_PIE,
167 OPTION_UNRESOLVED_SYMBOLS,
168 OPTION_WARN_UNRESOLVED_SYMBOLS,
169 OPTION_ERROR_UNRESOLVED_SYMBOLS,
170 OPTION_WARN_SHARED_TEXTREL,
171 OPTION_WARN_ALTERNATE_EM,
172 OPTION_REDUCE_MEMORY_OVERHEADS,
173 #ifdef ENABLE_PLUGINS
174 OPTION_PLUGIN,
175 OPTION_PLUGIN_OPT,
176 #endif /* ENABLE_PLUGINS */
177 OPTION_DEFAULT_SCRIPT,
178 OPTION_PRINT_OUTPUT_FORMAT,
179 };
180
181 /* The long options. This structure is used for both the option
182 parsing and the help text. */
183
184 enum control_enum {
185 /* Use one dash before long option name. */
186 ONE_DASH,
187 /* Use two dashes before long option name. */
188 TWO_DASHES,
189 /* Only accept two dashes before the long option name.
190 This is an overloading of the use of this enum, since originally it
191 was only intended to tell the --help display function how to display
192 the long option name. This feature was added in order to resolve
193 the confusion about the -omagic command line switch. Is it setting
194 the output file name to "magic" or is it setting the NMAGIC flag on
195 the output ? It has been decided that it is setting the output file
196 name, and that if you want to set the NMAGIC flag you should use -N
197 or --omagic. */
198 EXACTLY_TWO_DASHES,
199 /* Don't mention this option in --help output. */
200 NO_HELP
201 };
202
203 struct ld_option
204 {
205 /* The long option information. */
206 struct option opt;
207 /* The short option with the same meaning ('\0' if none). */
208 char shortopt;
209 /* The name of the argument (NULL if none). */
210 const char *arg;
211 /* The documentation string. If this is NULL, this is a synonym for
212 the previous option. */
213 const char *doc;
214 enum control_enum control;
215 };
216
217 static const struct ld_option ld_options[] =
218 {
219 { {NULL, required_argument, NULL, '\0'},
220 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
221 ONE_DASH },
222 { {"architecture", required_argument, NULL, 'A'},
223 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
224 { {"format", required_argument, NULL, 'b'},
225 'b', N_("TARGET"), N_("Specify target for following input files"),
226 TWO_DASHES },
227 { {"mri-script", required_argument, NULL, 'c'},
228 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
229 { {"dc", no_argument, NULL, 'd'},
230 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
231 { {"dp", no_argument, NULL, 'd'},
232 '\0', NULL, NULL, ONE_DASH },
233 { {"entry", required_argument, NULL, 'e'},
234 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
235 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
236 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
237 { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
238 '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
239 { {"EB", no_argument, NULL, OPTION_EB},
240 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
241 { {"EL", no_argument, NULL, OPTION_EL},
242 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
243 { {"auxiliary", required_argument, NULL, 'f'},
244 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
245 TWO_DASHES },
246 { {"filter", required_argument, NULL, 'F'},
247 'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
248 TWO_DASHES },
249 { {NULL, no_argument, NULL, '\0'},
250 'g', NULL, N_("Ignored"), ONE_DASH },
251 { {"gpsize", required_argument, NULL, 'G'},
252 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
253 TWO_DASHES },
254 { {"soname", required_argument, NULL, OPTION_SONAME},
255 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
256 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
257 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
258 TWO_DASHES },
259 { {"library", required_argument, NULL, 'l'},
260 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
261 { {"library-path", required_argument, NULL, 'L'},
262 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
263 TWO_DASHES },
264 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
265 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
266 { {NULL, required_argument, NULL, '\0'},
267 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
268 { {"print-map", no_argument, NULL, 'M'},
269 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
270 { {"nmagic", no_argument, NULL, 'n'},
271 'n', NULL, N_("Do not page align data"), TWO_DASHES },
272 { {"omagic", no_argument, NULL, 'N'},
273 'N', NULL, N_("Do not page align data, do not make text readonly"),
274 EXACTLY_TWO_DASHES },
275 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
276 '\0', NULL, N_("Page align data, make text readonly"),
277 EXACTLY_TWO_DASHES },
278 { {"output", required_argument, NULL, 'o'},
279 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
280 { {NULL, required_argument, NULL, '\0'},
281 'O', NULL, N_("Optimize output file"), ONE_DASH },
282 #ifdef ENABLE_PLUGINS
283 { {"plugin", required_argument, NULL, OPTION_PLUGIN},
284 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
285 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
286 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
287 { {"flto", optional_argument, NULL, OPTION_IGNORE},
288 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
289 ONE_DASH },
290 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
291 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
292 ONE_DASH },
293 #endif /* ENABLE_PLUGINS */
294 { {"Qy", no_argument, NULL, OPTION_IGNORE},
295 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
296 { {"emit-relocs", no_argument, NULL, 'q'},
297 'q', NULL, "Generate relocations in final output", TWO_DASHES },
298 { {"relocatable", no_argument, NULL, 'r'},
299 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
300 { {NULL, no_argument, NULL, '\0'},
301 'i', NULL, NULL, ONE_DASH },
302 { {"just-symbols", required_argument, NULL, 'R'},
303 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
304 TWO_DASHES },
305 { {"strip-all", no_argument, NULL, 's'},
306 's', NULL, N_("Strip all symbols"), TWO_DASHES },
307 { {"strip-debug", no_argument, NULL, 'S'},
308 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
309 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
310 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
311 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
312 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
313 { {"trace", no_argument, NULL, 't'},
314 't', NULL, N_("Trace file opens"), TWO_DASHES },
315 { {"script", required_argument, NULL, 'T'},
316 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
317 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
318 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
319 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
320 '\0', NULL, NULL, ONE_DASH },
321 { {"undefined", required_argument, NULL, 'u'},
322 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
323 TWO_DASHES },
324 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
325 '\0', N_("[=SECTION]"),
326 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
327 { {"Ur", no_argument, NULL, OPTION_UR},
328 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
329 { {"version", no_argument, NULL, OPTION_VERSION},
330 'v', NULL, N_("Print version information"), TWO_DASHES },
331 { {NULL, no_argument, NULL, '\0'},
332 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
333 { {"discard-all", no_argument, NULL, 'x'},
334 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
335 { {"discard-locals", no_argument, NULL, 'X'},
336 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
337 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
338 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
339 { {"trace-symbol", required_argument, NULL, 'y'},
340 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
341 { {NULL, required_argument, NULL, '\0'},
342 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
343 ONE_DASH },
344 { {"start-group", no_argument, NULL, '('},
345 '(', NULL, N_("Start a group"), TWO_DASHES },
346 { {"end-group", no_argument, NULL, ')'},
347 ')', NULL, N_("End a group"), TWO_DASHES },
348 { {"accept-unknown-input-arch", no_argument, NULL,
349 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
350 '\0', NULL,
351 N_("Accept input files whose architecture cannot be determined"),
352 TWO_DASHES },
353 { {"no-accept-unknown-input-arch", no_argument, NULL,
354 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
355 '\0', NULL, N_("Reject input files whose architecture is unknown"),
356 TWO_DASHES },
357
358 /* The next two options are deprecated because of their similarity to
359 --as-needed and --no-as-needed. They have been replaced by
360 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */
361 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
362 '\0', NULL, NULL, NO_HELP },
363 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
364 '\0', NULL, NULL, NO_HELP },
365
366 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
367 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
368 TWO_DASHES },
369 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
370 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
371 " the command line"),
372 TWO_DASHES },
373 { {"assert", required_argument, NULL, OPTION_ASSERT},
374 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
375 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
376 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
377 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
378 '\0', NULL, NULL, ONE_DASH },
379 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
380 '\0', NULL, NULL, ONE_DASH },
381 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
382 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
383 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
384 '\0', NULL, NULL, ONE_DASH },
385 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
386 '\0', NULL, NULL, ONE_DASH },
387 { {"static", no_argument, NULL, OPTION_NON_SHARED},
388 '\0', NULL, NULL, ONE_DASH },
389 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
390 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
391 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
392 '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
393 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
394 '\0', NULL, N_("Check section addresses for overlaps (default)"),
395 TWO_DASHES },
396 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
397 '\0', NULL, N_("Do not check section addresses for overlaps"),
398 TWO_DASHES },
399 { {"copy-dt-needed-entries", no_argument, NULL,
400 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
401 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
402 TWO_DASHES },
403 { {"no-copy-dt-needed-entries", no_argument, NULL,
404 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
405 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
406 TWO_DASHES },
407
408 { {"cref", no_argument, NULL, OPTION_CREF},
409 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
410 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
411 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
412 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
413 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
414 TWO_DASHES },
415 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
416 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
417 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
418 '\0', NULL, N_("Treat warnings as errors"),
419 TWO_DASHES },
420 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
421 '\0', NULL, N_("Do not treat warnings as errors (default)"),
422 TWO_DASHES },
423 { {"fini", required_argument, NULL, OPTION_FINI},
424 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
425 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
426 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
427 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
428 '\0', NULL, N_("Remove unused sections (on some targets)"),
429 TWO_DASHES },
430 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
431 '\0', NULL, N_("Don't remove unused sections (default)"),
432 TWO_DASHES },
433 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
434 '\0', NULL, N_("List removed unused sections on stderr"),
435 TWO_DASHES },
436 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
437 '\0', NULL, N_("Do not list removed unused sections"),
438 TWO_DASHES },
439 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
440 '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
441 TWO_DASHES },
442 { {"help", no_argument, NULL, OPTION_HELP},
443 '\0', NULL, N_("Print option help"), TWO_DASHES },
444 { {"init", required_argument, NULL, OPTION_INIT},
445 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
446 { {"Map", required_argument, NULL, OPTION_MAP},
447 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
448 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
449 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
450 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
451 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
452 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
453 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
454 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
455 '\0', NULL, N_("Do not allow unresolved references in object files"),
456 TWO_DASHES },
457 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
458 '\0', NULL, N_("Allow unresolved references in shared libraries"),
459 TWO_DASHES },
460 { {"no-allow-shlib-undefined", no_argument, NULL,
461 OPTION_NO_ALLOW_SHLIB_UNDEFINED},
462 '\0', NULL, N_("Do not allow unresolved references in shared libs"),
463 TWO_DASHES },
464 { {"allow-multiple-definition", no_argument, NULL,
465 OPTION_ALLOW_MULTIPLE_DEFINITION},
466 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
467 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
468 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
469 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
470 '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
471 { {"default-imported-symver", no_argument, NULL,
472 OPTION_DEFAULT_IMPORTED_SYMVER},
473 '\0', NULL, N_("Create default symbol version for imported symbols"),
474 TWO_DASHES },
475 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
476 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
477 { {"no-warn-search-mismatch", no_argument, NULL,
478 OPTION_NO_WARN_SEARCH_MISMATCH},
479 '\0', NULL, N_("Don't warn on finding an incompatible library"),
480 TWO_DASHES},
481 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
482 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
483 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
484 '\0', NULL, N_("Create an output file even if errors occur"),
485 TWO_DASHES },
486 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
487 '\0', NULL, NULL, NO_HELP },
488 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
489 '\0', NULL, N_("Only use library directories specified on\n"
490 " the command line"),
491 ONE_DASH },
492 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
493 '\0', N_("TARGET"), N_("Specify target of output file"),
494 EXACTLY_TWO_DASHES },
495 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT},
496 '\0', NULL, N_("Print default output format"), TWO_DASHES },
497 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
498 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
499 { {"reduce-memory-overheads", no_argument, NULL,
500 OPTION_REDUCE_MEMORY_OVERHEADS},
501 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
502 TWO_DASHES },
503 { {"relax", no_argument, NULL, OPTION_RELAX},
504 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
505 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
506 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
507 { {"retain-symbols-file", required_argument, NULL,
508 OPTION_RETAIN_SYMBOLS_FILE},
509 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
510 { {"rpath", required_argument, NULL, OPTION_RPATH},
511 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
512 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
513 '\0', N_("PATH"), N_("Set link time shared library search path"),
514 ONE_DASH },
515 { {"shared", no_argument, NULL, OPTION_SHARED},
516 '\0', NULL, N_("Create a shared library"), ONE_DASH },
517 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
518 '\0', NULL, NULL, ONE_DASH },
519 { {"pie", no_argument, NULL, OPTION_PIE},
520 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
521 { {"pic-executable", no_argument, NULL, OPTION_PIE},
522 '\0', NULL, NULL, TWO_DASHES },
523 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
524 '\0', N_("[=ascending|descending]"),
525 N_("Sort common symbols by alignment [in specified order]"),
526 TWO_DASHES },
527 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
528 '\0', NULL, NULL, NO_HELP },
529 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
530 '\0', N_("name|alignment"),
531 N_("Sort sections by name or maximum alignment"), TWO_DASHES },
532 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
533 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
534 TWO_DASHES },
535 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
536 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
537 TWO_DASHES },
538 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
539 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
540 TWO_DASHES },
541 { {"stats", no_argument, NULL, OPTION_STATS},
542 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
543 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
544 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
545 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
546 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
547 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
548 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
549 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
550 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
551 TWO_DASHES },
552 { {"Tbss", required_argument, NULL, OPTION_TBSS},
553 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
554 { {"Tdata", required_argument, NULL, OPTION_TDATA},
555 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
556 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
557 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
558 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
559 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
560 { {"unresolved-symbols=<method>", required_argument, NULL,
561 OPTION_UNRESOLVED_SYMBOLS},
562 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
563 " ignore-all, report-all, ignore-in-object-files,\n"
564 " ignore-in-shared-libs"),
565 TWO_DASHES },
566 { {"verbose", optional_argument, NULL, OPTION_VERBOSE},
567 '\0', N_("[=NUMBER]"),
568 N_("Output lots of information during link"), TWO_DASHES },
569 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
570 '\0', NULL, NULL, NO_HELP },
571 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
572 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
573 { {"version-exports-section", required_argument, NULL,
574 OPTION_VERSION_EXPORTS_SECTION },
575 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
576 " SYMBOL as the version."),
577 TWO_DASHES },
578 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
579 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
580 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
581 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
582 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
583 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
584 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
585 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
586 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
587 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
588 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
589 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
590 TWO_DASHES },
591 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
592 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
593 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
594 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
595 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
596 '\0', NULL, N_("Warn if start of section changes due to alignment"),
597 TWO_DASHES },
598 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
599 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
600 TWO_DASHES },
601 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
602 '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
603 TWO_DASHES },
604 { {"warn-unresolved-symbols", no_argument, NULL,
605 OPTION_WARN_UNRESOLVED_SYMBOLS},
606 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
607 { {"error-unresolved-symbols", no_argument, NULL,
608 OPTION_ERROR_UNRESOLVED_SYMBOLS},
609 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
610 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
611 '\0', NULL, N_("Include all objects from following archives"),
612 TWO_DASHES },
613 { {"wrap", required_argument, NULL, OPTION_WRAP},
614 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
615 };
616
617 #define OPTION_COUNT ARRAY_SIZE (ld_options)
618
619 void
620 parse_args (unsigned argc, char **argv)
621 {
622 unsigned i;
623 int is, il, irl;
624 int ingroup = 0;
625 char *default_dirlist = NULL;
626 char *shortopts;
627 struct option *longopts;
628 struct option *really_longopts;
629 int last_optind;
630 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
631
632 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
633 longopts = (struct option *)
634 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
635 really_longopts = (struct option *)
636 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
637
638 /* Starting the short option string with '-' is for programs that
639 expect options and other ARGV-elements in any order and that care about
640 the ordering of the two. We describe each non-option ARGV-element
641 as if it were the argument of an option with character code 1. */
642 shortopts[0] = '-';
643 is = 1;
644 il = 0;
645 irl = 0;
646 for (i = 0; i < OPTION_COUNT; i++)
647 {
648 if (ld_options[i].shortopt != '\0')
649 {
650 shortopts[is] = ld_options[i].shortopt;
651 ++is;
652 if (ld_options[i].opt.has_arg == required_argument
653 || ld_options[i].opt.has_arg == optional_argument)
654 {
655 shortopts[is] = ':';
656 ++is;
657 if (ld_options[i].opt.has_arg == optional_argument)
658 {
659 shortopts[is] = ':';
660 ++is;
661 }
662 }
663 }
664 if (ld_options[i].opt.name != NULL)
665 {
666 if (ld_options[i].control == EXACTLY_TWO_DASHES)
667 {
668 really_longopts[irl] = ld_options[i].opt;
669 ++irl;
670 }
671 else
672 {
673 longopts[il] = ld_options[i].opt;
674 ++il;
675 }
676 }
677 }
678 shortopts[is] = '\0';
679 longopts[il].name = NULL;
680 really_longopts[irl].name = NULL;
681
682 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
683
684 /* The -G option is ambiguous on different platforms. Sometimes it
685 specifies the largest data size to put into the small data
686 section. Sometimes it is equivalent to --shared. Unfortunately,
687 the first form takes an argument, while the second does not.
688
689 We need to permit the --shared form because on some platforms,
690 such as Solaris, gcc -shared will pass -G to the linker.
691
692 To permit either usage, we look through the argument list. If we
693 find -G not followed by a number, we change it into --shared.
694 This will work for most normal cases. */
695 for (i = 1; i < argc; i++)
696 if (strcmp (argv[i], "-G") == 0
697 && (i + 1 >= argc
698 || ! ISDIGIT (argv[i + 1][0])))
699 argv[i] = (char *) "--shared";
700
701 /* Because we permit long options to start with a single dash, and
702 we have a --library option, and the -l option is conventionally
703 used with an immediately following argument, we can have bad
704 results if somebody tries to use -l with a library whose name
705 happens to start with "ibrary", as in -li. We avoid problems by
706 simply turning -l into --library. This means that users will
707 have to use two dashes in order to use --library, which is OK
708 since that's how it is documented.
709
710 FIXME: It's possible that this problem can arise for other short
711 options as well, although the user does always have the recourse
712 of adding a space between the option and the argument. */
713 for (i = 1; i < argc; i++)
714 {
715 if (argv[i][0] == '-'
716 && argv[i][1] == 'l'
717 && argv[i][2] != '\0')
718 {
719 char *n;
720
721 n = (char *) xmalloc (strlen (argv[i]) + 20);
722 sprintf (n, "--library=%s", argv[i] + 2);
723 argv[i] = n;
724 }
725 }
726
727 last_optind = -1;
728 while (1)
729 {
730 int longind;
731 int optc;
732
733 /* Using last_optind lets us avoid calling ldemul_parse_args
734 multiple times on a single option, which would lead to
735 confusion in the internal static variables maintained by
736 getopt. This could otherwise happen for an argument like
737 -nx, in which the -n is parsed as a single option, and we
738 loop around to pick up the -x. */
739 if (optind != last_optind)
740 if (ldemul_parse_args (argc, argv))
741 continue;
742
743 /* getopt_long_only is like getopt_long, but '-' as well as '--'
744 can indicate a long option. */
745 opterr = 0;
746 last_optind = optind;
747 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
748 if (optc == '?')
749 {
750 optind = last_optind;
751 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
752 }
753
754 if (ldemul_handle_option (optc))
755 continue;
756
757 if (optc == -1)
758 break;
759
760 switch (optc)
761 {
762 case '?':
763 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
764 /* Fall through. */
765
766 default:
767 einfo (_("%P%F: use the --help option for usage information\n"));
768
769 case 1: /* File name. */
770 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
771 break;
772
773 case OPTION_IGNORE:
774 break;
775 case 'a':
776 /* For HP/UX compatibility. Actually -a shared should mean
777 ``use only shared libraries'' but, then, we don't
778 currently support shared libraries on HP/UX anyhow. */
779 if (strcmp (optarg, "archive") == 0)
780 config.dynamic_link = FALSE;
781 else if (strcmp (optarg, "shared") == 0
782 || strcmp (optarg, "default") == 0)
783 config.dynamic_link = TRUE;
784 else
785 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
786 break;
787 case OPTION_ASSERT:
788 /* FIXME: We just ignore these, but we should handle them. */
789 if (strcmp (optarg, "definitions") == 0)
790 ;
791 else if (strcmp (optarg, "nodefinitions") == 0)
792 ;
793 else if (strcmp (optarg, "nosymbolic") == 0)
794 ;
795 else if (strcmp (optarg, "pure-text") == 0)
796 ;
797 else
798 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
799 break;
800 case 'A':
801 ldfile_add_arch (optarg);
802 break;
803 case 'b':
804 lang_add_target (optarg);
805 break;
806 case 'c':
807 ldfile_open_command_file (optarg);
808 parser_input = input_mri_script;
809 yyparse ();
810 break;
811 case OPTION_CALL_SHARED:
812 config.dynamic_link = TRUE;
813 break;
814 case OPTION_NON_SHARED:
815 config.dynamic_link = FALSE;
816 break;
817 case OPTION_CREF:
818 command_line.cref = TRUE;
819 link_info.notice_all = TRUE;
820 break;
821 case 'd':
822 command_line.force_common_definition = TRUE;
823 break;
824 case OPTION_DEFSYM:
825 lex_string = optarg;
826 lex_redirect (optarg);
827 parser_input = input_defsym;
828 parsing_defsym = 1;
829 yyparse ();
830 parsing_defsym = 0;
831 lex_string = NULL;
832 break;
833 case OPTION_DEMANGLE:
834 demangling = TRUE;
835 if (optarg != NULL)
836 {
837 enum demangling_styles style;
838
839 style = cplus_demangle_name_to_style (optarg);
840 if (style == unknown_demangling)
841 einfo (_("%F%P: unknown demangling style `%s'"),
842 optarg);
843
844 cplus_demangle_set_style (style);
845 }
846 break;
847 case 'I': /* Used on Solaris. */
848 case OPTION_DYNAMIC_LINKER:
849 command_line.interpreter = optarg;
850 break;
851 case OPTION_SYSROOT:
852 /* Already handled in ldmain.c. */
853 break;
854 case OPTION_EB:
855 command_line.endian = ENDIAN_BIG;
856 break;
857 case OPTION_EL:
858 command_line.endian = ENDIAN_LITTLE;
859 break;
860 case OPTION_EMBEDDED_RELOCS:
861 command_line.embedded_relocs = TRUE;
862 break;
863 case OPTION_EXPORT_DYNAMIC:
864 case 'E': /* HP/UX compatibility. */
865 link_info.export_dynamic = TRUE;
866 break;
867 case OPTION_NO_EXPORT_DYNAMIC:
868 link_info.export_dynamic = FALSE;
869 break;
870 case 'e':
871 lang_add_entry (optarg, TRUE);
872 break;
873 case 'f':
874 if (command_line.auxiliary_filters == NULL)
875 {
876 command_line.auxiliary_filters = (char **)
877 xmalloc (2 * sizeof (char *));
878 command_line.auxiliary_filters[0] = optarg;
879 command_line.auxiliary_filters[1] = NULL;
880 }
881 else
882 {
883 int c;
884 char **p;
885
886 c = 0;
887 for (p = command_line.auxiliary_filters; *p != NULL; p++)
888 ++c;
889 command_line.auxiliary_filters = (char **)
890 xrealloc (command_line.auxiliary_filters,
891 (c + 2) * sizeof (char *));
892 command_line.auxiliary_filters[c] = optarg;
893 command_line.auxiliary_filters[c + 1] = NULL;
894 }
895 break;
896 case 'F':
897 command_line.filter_shlib = optarg;
898 break;
899 case OPTION_FORCE_EXE_SUFFIX:
900 command_line.force_exe_suffix = TRUE;
901 break;
902 case 'G':
903 {
904 char *end;
905 g_switch_value = strtoul (optarg, &end, 0);
906 if (*end)
907 einfo (_("%P%F: invalid number `%s'\n"), optarg);
908 }
909 break;
910 case 'g':
911 /* Ignore. */
912 break;
913 case OPTION_GC_SECTIONS:
914 link_info.gc_sections = TRUE;
915 break;
916 case OPTION_PRINT_GC_SECTIONS:
917 link_info.print_gc_sections = TRUE;
918 break;
919 case OPTION_HELP:
920 help ();
921 xexit (0);
922 break;
923 case 'L':
924 ldfile_add_library_path (optarg, TRUE);
925 break;
926 case 'l':
927 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
928 break;
929 case 'M':
930 config.map_filename = "-";
931 break;
932 case 'm':
933 /* Ignore. Was handled in a pre-parse. */
934 break;
935 case OPTION_MAP:
936 config.map_filename = optarg;
937 break;
938 case 'N':
939 config.text_read_only = FALSE;
940 config.magic_demand_paged = FALSE;
941 config.dynamic_link = FALSE;
942 break;
943 case OPTION_NO_OMAGIC:
944 config.text_read_only = TRUE;
945 config.magic_demand_paged = TRUE;
946 /* NB/ Does not set dynamic_link to TRUE.
947 Use --call-shared or -Bdynamic for this. */
948 break;
949 case 'n':
950 config.magic_demand_paged = FALSE;
951 config.dynamic_link = FALSE;
952 break;
953 case OPTION_NO_DEFINE_COMMON:
954 command_line.inhibit_common_definition = TRUE;
955 break;
956 case OPTION_NO_DEMANGLE:
957 demangling = FALSE;
958 break;
959 case OPTION_NO_GC_SECTIONS:
960 link_info.gc_sections = FALSE;
961 break;
962 case OPTION_NO_PRINT_GC_SECTIONS:
963 link_info.print_gc_sections = FALSE;
964 break;
965 case OPTION_NO_KEEP_MEMORY:
966 link_info.keep_memory = FALSE;
967 break;
968 case OPTION_NO_UNDEFINED:
969 link_info.unresolved_syms_in_objects
970 = how_to_report_unresolved_symbols;
971 break;
972 case OPTION_ALLOW_SHLIB_UNDEFINED:
973 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
974 break;
975 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
976 link_info.unresolved_syms_in_shared_libs
977 = how_to_report_unresolved_symbols;
978 break;
979 case OPTION_UNRESOLVED_SYMBOLS:
980 if (strcmp (optarg, "ignore-all") == 0)
981 {
982 link_info.unresolved_syms_in_objects = RM_IGNORE;
983 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
984 }
985 else if (strcmp (optarg, "report-all") == 0)
986 {
987 link_info.unresolved_syms_in_objects
988 = how_to_report_unresolved_symbols;
989 link_info.unresolved_syms_in_shared_libs
990 = how_to_report_unresolved_symbols;
991 }
992 else if (strcmp (optarg, "ignore-in-object-files") == 0)
993 {
994 link_info.unresolved_syms_in_objects = RM_IGNORE;
995 link_info.unresolved_syms_in_shared_libs
996 = how_to_report_unresolved_symbols;
997 }
998 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
999 {
1000 link_info.unresolved_syms_in_objects
1001 = how_to_report_unresolved_symbols;
1002 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1003 }
1004 else
1005 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
1006 break;
1007 case OPTION_WARN_UNRESOLVED_SYMBOLS:
1008 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
1009 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
1010 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
1011 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
1012 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
1013 break;
1014
1015 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
1016 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
1017 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
1018 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
1019 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
1020 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
1021 break;
1022 case OPTION_ALLOW_MULTIPLE_DEFINITION:
1023 link_info.allow_multiple_definition = TRUE;
1024 break;
1025 case OPTION_NO_UNDEFINED_VERSION:
1026 link_info.allow_undefined_version = FALSE;
1027 break;
1028 case OPTION_DEFAULT_SYMVER:
1029 link_info.create_default_symver = TRUE;
1030 break;
1031 case OPTION_DEFAULT_IMPORTED_SYMVER:
1032 link_info.default_imported_symver = TRUE;
1033 break;
1034 case OPTION_NO_WARN_MISMATCH:
1035 command_line.warn_mismatch = FALSE;
1036 break;
1037 case OPTION_NO_WARN_SEARCH_MISMATCH:
1038 command_line.warn_search_mismatch = FALSE;
1039 break;
1040 case OPTION_NOINHIBIT_EXEC:
1041 force_make_executable = TRUE;
1042 break;
1043 case OPTION_NOSTDLIB:
1044 config.only_cmd_line_lib_dirs = TRUE;
1045 break;
1046 case OPTION_NO_WHOLE_ARCHIVE:
1047 whole_archive = FALSE;
1048 break;
1049 case 'O':
1050 /* FIXME "-O<non-digits> <value>" used to set the address of
1051 section <non-digits>. Was this for compatibility with
1052 something, or can we create a new option to do that
1053 (with a syntax similar to -defsym)?
1054 getopt can't handle two args to an option without kludges. */
1055
1056 /* Enable optimizations of output files. */
1057 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1058 break;
1059 case 'o':
1060 lang_add_output (optarg, 0);
1061 break;
1062 case OPTION_OFORMAT:
1063 lang_add_output_format (optarg, NULL, NULL, 0);
1064 break;
1065 case OPTION_PRINT_OUTPUT_FORMAT:
1066 command_line.print_output_format = TRUE;
1067 break;
1068 #ifdef ENABLE_PLUGINS
1069 case OPTION_PLUGIN:
1070 if (plugin_opt_plugin (optarg))
1071 einfo (_("%P%F: %s: error loading plugin\n"),
1072 plugin_error_plugin ());
1073 break;
1074 case OPTION_PLUGIN_OPT:
1075 if (plugin_opt_plugin_arg (optarg))
1076 einfo(_("%P%F: bad -plugin-opt option\n"));
1077 break;
1078 #endif /* ENABLE_PLUGINS */
1079 case 'q':
1080 link_info.emitrelocations = TRUE;
1081 break;
1082 case 'i':
1083 case 'r':
1084 if (optind == last_optind)
1085 /* This can happen if the user put "-rpath,a" on the command
1086 line. (Or something similar. The comma is important).
1087 Getopt becomes confused and thinks that this is a -r option
1088 but it cannot parse the text after the -r so it refuses to
1089 increment the optind counter. Detect this case and issue
1090 an error message here. We cannot just make this a warning,
1091 increment optind, and continue because getopt is too confused
1092 and will seg-fault the next time around. */
1093 einfo(_("%P%F: bad -rpath option\n"));
1094
1095 link_info.relocatable = TRUE;
1096 config.build_constructors = FALSE;
1097 config.magic_demand_paged = FALSE;
1098 config.text_read_only = FALSE;
1099 config.dynamic_link = FALSE;
1100 break;
1101 case 'R':
1102 /* The GNU linker traditionally uses -R to mean to include
1103 only the symbols from a file. The Solaris linker uses -R
1104 to set the path used by the runtime linker to find
1105 libraries. This is the GNU linker -rpath argument. We
1106 try to support both simultaneously by checking the file
1107 named. If it is a directory, rather than a regular file,
1108 we assume -rpath was meant. */
1109 {
1110 struct stat s;
1111
1112 if (stat (optarg, &s) >= 0
1113 && ! S_ISDIR (s.st_mode))
1114 {
1115 lang_add_input_file (optarg,
1116 lang_input_file_is_symbols_only_enum,
1117 NULL);
1118 break;
1119 }
1120 }
1121 /* Fall through. */
1122 case OPTION_RPATH:
1123 if (command_line.rpath == NULL)
1124 command_line.rpath = xstrdup (optarg);
1125 else
1126 {
1127 size_t rpath_len = strlen (command_line.rpath);
1128 size_t optarg_len = strlen (optarg);
1129 char *buf;
1130 char *cp = command_line.rpath;
1131
1132 /* First see whether OPTARG is already in the path. */
1133 do
1134 {
1135 if (strncmp (optarg, cp, optarg_len) == 0
1136 && (cp[optarg_len] == 0
1137 || cp[optarg_len] == config.rpath_separator))
1138 /* We found it. */
1139 break;
1140
1141 /* Not yet found. */
1142 cp = strchr (cp, config.rpath_separator);
1143 if (cp != NULL)
1144 ++cp;
1145 }
1146 while (cp != NULL);
1147
1148 if (cp == NULL)
1149 {
1150 buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1151 sprintf (buf, "%s%c%s", command_line.rpath,
1152 config.rpath_separator, optarg);
1153 free (command_line.rpath);
1154 command_line.rpath = buf;
1155 }
1156 }
1157 break;
1158 case OPTION_RPATH_LINK:
1159 if (command_line.rpath_link == NULL)
1160 command_line.rpath_link = xstrdup (optarg);
1161 else
1162 {
1163 char *buf;
1164
1165 buf = (char *) xmalloc (strlen (command_line.rpath_link)
1166 + strlen (optarg)
1167 + 2);
1168 sprintf (buf, "%s%c%s", command_line.rpath_link,
1169 config.rpath_separator, optarg);
1170 free (command_line.rpath_link);
1171 command_line.rpath_link = buf;
1172 }
1173 break;
1174 case OPTION_NO_RELAX:
1175 DISABLE_RELAXATION;
1176 break;
1177 case OPTION_RELAX:
1178 ENABLE_RELAXATION;
1179 break;
1180 case OPTION_RETAIN_SYMBOLS_FILE:
1181 add_keepsyms_file (optarg);
1182 break;
1183 case 'S':
1184 link_info.strip = strip_debugger;
1185 break;
1186 case 's':
1187 link_info.strip = strip_all;
1188 break;
1189 case OPTION_STRIP_DISCARDED:
1190 link_info.strip_discarded = TRUE;
1191 break;
1192 case OPTION_NO_STRIP_DISCARDED:
1193 link_info.strip_discarded = FALSE;
1194 break;
1195 case OPTION_SHARED:
1196 if (config.has_shared)
1197 {
1198 link_info.shared = TRUE;
1199 /* When creating a shared library, the default
1200 behaviour is to ignore any unresolved references. */
1201 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1202 link_info.unresolved_syms_in_objects = RM_IGNORE;
1203 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1204 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1205 }
1206 else
1207 einfo (_("%P%F: -shared not supported\n"));
1208 break;
1209 case OPTION_PIE:
1210 if (config.has_shared)
1211 {
1212 link_info.shared = TRUE;
1213 link_info.pie = TRUE;
1214 }
1215 else
1216 einfo (_("%P%F: -pie not supported\n"));
1217 break;
1218 case 'h': /* Used on Solaris. */
1219 case OPTION_SONAME:
1220 command_line.soname = optarg;
1221 break;
1222 case OPTION_SORT_COMMON:
1223 if (optarg == NULL
1224 || strcmp (optarg, N_("descending")) == 0)
1225 config.sort_common = sort_descending;
1226 else if (strcmp (optarg, N_("ascending")) == 0)
1227 config.sort_common = sort_ascending;
1228 else
1229 einfo (_("%P%F: invalid common section sorting option: %s\n"),
1230 optarg);
1231 break;
1232 case OPTION_SORT_SECTION:
1233 if (strcmp (optarg, N_("name")) == 0)
1234 sort_section = by_name;
1235 else if (strcmp (optarg, N_("alignment")) == 0)
1236 sort_section = by_alignment;
1237 else
1238 einfo (_("%P%F: invalid section sorting option: %s\n"),
1239 optarg);
1240 break;
1241 case OPTION_STATS:
1242 config.stats = TRUE;
1243 break;
1244 case OPTION_SYMBOLIC:
1245 command_line.symbolic = symbolic;
1246 break;
1247 case OPTION_SYMBOLIC_FUNCTIONS:
1248 command_line.symbolic = symbolic_functions;
1249 break;
1250 case 't':
1251 trace_files = TRUE;
1252 break;
1253 case 'T':
1254 previous_script_handle = saved_script_handle;
1255 ldfile_open_command_file (optarg);
1256 parser_input = input_script;
1257 yyparse ();
1258 previous_script_handle = NULL;
1259 break;
1260 case OPTION_DEFAULT_SCRIPT:
1261 command_line.default_script = optarg;
1262 break;
1263 case OPTION_SECTION_START:
1264 {
1265 char *optarg2;
1266 char *sec_name;
1267 int len;
1268
1269 /* Check for <something>=<somthing>... */
1270 optarg2 = strchr (optarg, '=');
1271 if (optarg2 == NULL)
1272 einfo (_("%P%F: invalid argument to option"
1273 " \"--section-start\"\n"));
1274
1275 optarg2++;
1276
1277 /* So far so good. Are all the args present? */
1278 if ((*optarg == '\0') || (*optarg2 == '\0'))
1279 einfo (_("%P%F: missing argument(s) to option"
1280 " \"--section-start\"\n"));
1281
1282 /* We must copy the section name as set_section_start
1283 doesn't do it for us. */
1284 len = optarg2 - optarg;
1285 sec_name = (char *) xmalloc (len);
1286 memcpy (sec_name, optarg, len - 1);
1287 sec_name[len - 1] = 0;
1288
1289 /* Then set it... */
1290 set_section_start (sec_name, optarg2);
1291 }
1292 break;
1293 case OPTION_TARGET_HELP:
1294 /* Mention any target specific options. */
1295 ldemul_list_emulation_options (stdout);
1296 exit (0);
1297 case OPTION_TBSS:
1298 set_segment_start (".bss", optarg);
1299 break;
1300 case OPTION_TDATA:
1301 set_segment_start (".data", optarg);
1302 break;
1303 case OPTION_TTEXT:
1304 set_segment_start (".text", optarg);
1305 break;
1306 case OPTION_TTEXT_SEGMENT:
1307 set_segment_start (".text-segment", optarg);
1308 break;
1309 case OPTION_TRADITIONAL_FORMAT:
1310 link_info.traditional_format = TRUE;
1311 break;
1312 case OPTION_TASK_LINK:
1313 link_info.task_link = TRUE;
1314 /* Fall through - do an implied -r option. */
1315 case OPTION_UR:
1316 link_info.relocatable = TRUE;
1317 config.build_constructors = TRUE;
1318 config.magic_demand_paged = FALSE;
1319 config.text_read_only = FALSE;
1320 config.dynamic_link = FALSE;
1321 break;
1322 case 'u':
1323 ldlang_add_undef (optarg, TRUE);
1324 break;
1325 case OPTION_UNIQUE:
1326 if (optarg != NULL)
1327 lang_add_unique (optarg);
1328 else
1329 config.unique_orphan_sections = TRUE;
1330 break;
1331 case OPTION_VERBOSE:
1332 ldversion (1);
1333 version_printed = TRUE;
1334 trace_file_tries = TRUE;
1335 overflow_cutoff_limit = -2;
1336 if (optarg != NULL)
1337 {
1338 char *end;
1339 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1340 if (*end)
1341 einfo (_("%P%F: invalid number `%s'\n"), optarg);
1342 #ifdef ENABLE_PLUGINS
1343 report_plugin_symbols = level > 1;
1344 #endif /* ENABLE_PLUGINS */
1345 }
1346 break;
1347 case 'v':
1348 ldversion (0);
1349 version_printed = TRUE;
1350 break;
1351 case 'V':
1352 ldversion (1);
1353 version_printed = TRUE;
1354 break;
1355 case OPTION_VERSION:
1356 ldversion (2);
1357 xexit (0);
1358 break;
1359 case OPTION_VERSION_SCRIPT:
1360 /* This option indicates a small script that only specifies
1361 version information. Read it, but don't assume that
1362 we've seen a linker script. */
1363 {
1364 FILE *hold_script_handle;
1365
1366 hold_script_handle = saved_script_handle;
1367 ldfile_open_command_file (optarg);
1368 saved_script_handle = hold_script_handle;
1369 parser_input = input_version_script;
1370 yyparse ();
1371 }
1372 break;
1373 case OPTION_VERSION_EXPORTS_SECTION:
1374 /* This option records a version symbol to be applied to the
1375 symbols listed for export to be found in the object files
1376 .exports sections. */
1377 command_line.version_exports_section = optarg;
1378 break;
1379 case OPTION_DYNAMIC_LIST_DATA:
1380 command_line.dynamic_list = dynamic_list_data;
1381 if (command_line.symbolic == symbolic)
1382 command_line.symbolic = symbolic_unset;
1383 break;
1384 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1385 lang_append_dynamic_list_cpp_typeinfo ();
1386 if (command_line.dynamic_list != dynamic_list_data)
1387 command_line.dynamic_list = dynamic_list;
1388 if (command_line.symbolic == symbolic)
1389 command_line.symbolic = symbolic_unset;
1390 break;
1391 case OPTION_DYNAMIC_LIST_CPP_NEW:
1392 lang_append_dynamic_list_cpp_new ();
1393 if (command_line.dynamic_list != dynamic_list_data)
1394 command_line.dynamic_list = dynamic_list;
1395 if (command_line.symbolic == symbolic)
1396 command_line.symbolic = symbolic_unset;
1397 break;
1398 case OPTION_DYNAMIC_LIST:
1399 /* This option indicates a small script that only specifies
1400 a dynamic list. Read it, but don't assume that we've
1401 seen a linker script. */
1402 {
1403 FILE *hold_script_handle;
1404
1405 hold_script_handle = saved_script_handle;
1406 ldfile_open_command_file (optarg);
1407 saved_script_handle = hold_script_handle;
1408 parser_input = input_dynamic_list;
1409 yyparse ();
1410 }
1411 if (command_line.dynamic_list != dynamic_list_data)
1412 command_line.dynamic_list = dynamic_list;
1413 if (command_line.symbolic == symbolic)
1414 command_line.symbolic = symbolic_unset;
1415 break;
1416 case OPTION_WARN_COMMON:
1417 config.warn_common = TRUE;
1418 break;
1419 case OPTION_WARN_CONSTRUCTORS:
1420 config.warn_constructors = TRUE;
1421 break;
1422 case OPTION_WARN_FATAL:
1423 config.fatal_warnings = TRUE;
1424 break;
1425 case OPTION_NO_WARN_FATAL:
1426 config.fatal_warnings = FALSE;
1427 break;
1428 case OPTION_WARN_MULTIPLE_GP:
1429 config.warn_multiple_gp = TRUE;
1430 break;
1431 case OPTION_WARN_ONCE:
1432 config.warn_once = TRUE;
1433 break;
1434 case OPTION_WARN_SECTION_ALIGN:
1435 config.warn_section_align = TRUE;
1436 break;
1437 case OPTION_WARN_SHARED_TEXTREL:
1438 link_info.warn_shared_textrel = TRUE;
1439 break;
1440 case OPTION_WARN_ALTERNATE_EM:
1441 link_info.warn_alternate_em = TRUE;
1442 break;
1443 case OPTION_WHOLE_ARCHIVE:
1444 whole_archive = TRUE;
1445 break;
1446 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1447 add_DT_NEEDED_for_dynamic = TRUE;
1448 break;
1449 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1450 add_DT_NEEDED_for_dynamic = FALSE;
1451 break;
1452 case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1453 add_DT_NEEDED_for_regular = TRUE;
1454 break;
1455 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1456 add_DT_NEEDED_for_regular = FALSE;
1457 break;
1458 case OPTION_WRAP:
1459 add_wrap (optarg);
1460 break;
1461 case OPTION_DISCARD_NONE:
1462 link_info.discard = discard_none;
1463 break;
1464 case 'X':
1465 link_info.discard = discard_l;
1466 break;
1467 case 'x':
1468 link_info.discard = discard_all;
1469 break;
1470 case 'Y':
1471 if (CONST_STRNEQ (optarg, "P,"))
1472 optarg += 2;
1473 if (default_dirlist != NULL)
1474 free (default_dirlist);
1475 default_dirlist = xstrdup (optarg);
1476 break;
1477 case 'y':
1478 add_ysym (optarg);
1479 break;
1480 case OPTION_SPARE_DYNAMIC_TAGS:
1481 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1482 break;
1483 case OPTION_SPLIT_BY_RELOC:
1484 if (optarg != NULL)
1485 config.split_by_reloc = strtoul (optarg, NULL, 0);
1486 else
1487 config.split_by_reloc = 32768;
1488 break;
1489 case OPTION_SPLIT_BY_FILE:
1490 if (optarg != NULL)
1491 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1492 else
1493 config.split_by_file = 1;
1494 break;
1495 case OPTION_CHECK_SECTIONS:
1496 command_line.check_section_addresses = 1;
1497 break;
1498 case OPTION_NO_CHECK_SECTIONS:
1499 command_line.check_section_addresses = 0;
1500 break;
1501 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1502 command_line.accept_unknown_input_arch = TRUE;
1503 break;
1504 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1505 command_line.accept_unknown_input_arch = FALSE;
1506 break;
1507 case '(':
1508 lang_enter_group ();
1509 ingroup++;
1510 break;
1511 case ')':
1512 if (! ingroup)
1513 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1514
1515 lang_leave_group ();
1516 ingroup--;
1517 break;
1518
1519 case OPTION_INIT:
1520 link_info.init_function = optarg;
1521 break;
1522
1523 case OPTION_FINI:
1524 link_info.fini_function = optarg;
1525 break;
1526
1527 case OPTION_REDUCE_MEMORY_OVERHEADS:
1528 link_info.reduce_memory_overheads = TRUE;
1529 if (config.hash_table_size == 0)
1530 config.hash_table_size = 1021;
1531 break;
1532
1533 case OPTION_HASH_SIZE:
1534 {
1535 bfd_size_type new_size;
1536
1537 new_size = strtoul (optarg, NULL, 0);
1538 if (new_size)
1539 config.hash_table_size = new_size;
1540 else
1541 einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1542 }
1543 break;
1544 }
1545 }
1546
1547 while (ingroup)
1548 {
1549 lang_leave_group ();
1550 ingroup--;
1551 }
1552
1553 if (default_dirlist != NULL)
1554 {
1555 set_default_dirlist (default_dirlist);
1556 free (default_dirlist);
1557 }
1558
1559 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1560 /* FIXME: Should we allow emulations a chance to set this ? */
1561 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1562
1563 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1564 /* FIXME: Should we allow emulations a chance to set this ? */
1565 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1566
1567 if (link_info.relocatable)
1568 {
1569 if (command_line.check_section_addresses < 0)
1570 command_line.check_section_addresses = 0;
1571 if (link_info.shared)
1572 einfo (_("%P%F: -r and -shared may not be used together\n"));
1573 }
1574
1575 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
1576 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
1577 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are
1578 for shared libraries. -Bsymbolic overrides all others and vice
1579 versa. */
1580 switch (command_line.symbolic)
1581 {
1582 case symbolic_unset:
1583 break;
1584 case symbolic:
1585 /* -Bsymbolic is for shared library only. */
1586 if (link_info.shared)
1587 {
1588 link_info.symbolic = TRUE;
1589 /* Should we free the unused memory? */
1590 link_info.dynamic_list = NULL;
1591 command_line.dynamic_list = dynamic_list_unset;
1592 }
1593 break;
1594 case symbolic_functions:
1595 /* -Bsymbolic-functions is for shared library only. */
1596 if (link_info.shared)
1597 command_line.dynamic_list = dynamic_list_data;
1598 break;
1599 }
1600
1601 switch (command_line.dynamic_list)
1602 {
1603 case dynamic_list_unset:
1604 break;
1605 case dynamic_list_data:
1606 link_info.dynamic_data = TRUE;
1607 case dynamic_list:
1608 link_info.dynamic = TRUE;
1609 break;
1610 }
1611
1612 if (! link_info.shared)
1613 {
1614 if (command_line.filter_shlib)
1615 einfo (_("%P%F: -F may not be used without -shared\n"));
1616 if (command_line.auxiliary_filters)
1617 einfo (_("%P%F: -f may not be used without -shared\n"));
1618 }
1619
1620 if (! link_info.shared || link_info.pie)
1621 link_info.executable = TRUE;
1622
1623 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
1624 don't see how else this can be handled, since in this case we
1625 must preserve all externally visible symbols. */
1626 if (link_info.relocatable && link_info.strip == strip_all)
1627 {
1628 link_info.strip = strip_debugger;
1629 if (link_info.discard == discard_sec_merge)
1630 link_info.discard = discard_all;
1631 }
1632 }
1633
1634 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1635 library search path. */
1636
1637 static void
1638 set_default_dirlist (char *dirlist_ptr)
1639 {
1640 char *p;
1641
1642 while (1)
1643 {
1644 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1645 if (p != NULL)
1646 *p = '\0';
1647 if (*dirlist_ptr != '\0')
1648 ldfile_add_library_path (dirlist_ptr, TRUE);
1649 if (p == NULL)
1650 break;
1651 dirlist_ptr = p + 1;
1652 }
1653 }
1654
1655 static void
1656 set_section_start (char *sect, char *valstr)
1657 {
1658 const char *end;
1659 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1660 if (*end)
1661 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1662 lang_section_start (sect, exp_intop (val), NULL);
1663 }
1664
1665 static void
1666 set_segment_start (const char *section, char *valstr)
1667 {
1668 const char *name;
1669 const char *end;
1670 segment_type *seg;
1671
1672 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1673 if (*end)
1674 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1675 /* If we already have an entry for this segment, update the existing
1676 value. */
1677 name = section + 1;
1678 for (seg = segments; seg; seg = seg->next)
1679 if (strcmp (seg->name, name) == 0)
1680 {
1681 seg->value = val;
1682 return;
1683 }
1684 /* There was no existing value so we must create a new segment
1685 entry. */
1686 seg = (segment_type *) stat_alloc (sizeof (*seg));
1687 seg->name = name;
1688 seg->value = val;
1689 seg->used = FALSE;
1690 /* Add it to the linked list of segments. */
1691 seg->next = segments;
1692 segments = seg;
1693 /* Historically, -Ttext and friends set the base address of a
1694 particular section. For backwards compatibility, we still do
1695 that. If a SEGMENT_START directive is seen, the section address
1696 assignment will be disabled. */
1697 lang_section_start (section, exp_intop (val), seg);
1698 }
1699
1700 \f
1701 /* Print help messages for the options. */
1702
1703 static void
1704 help (void)
1705 {
1706 unsigned i;
1707 const char **targets, **pp;
1708 int len;
1709
1710 printf (_("Usage: %s [options] file...\n"), program_name);
1711
1712 printf (_("Options:\n"));
1713 for (i = 0; i < OPTION_COUNT; i++)
1714 {
1715 if (ld_options[i].doc != NULL)
1716 {
1717 bfd_boolean comma;
1718 unsigned j;
1719
1720 printf (" ");
1721
1722 comma = FALSE;
1723 len = 2;
1724
1725 j = i;
1726 do
1727 {
1728 if (ld_options[j].shortopt != '\0'
1729 && ld_options[j].control != NO_HELP)
1730 {
1731 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1732 len += (comma ? 2 : 0) + 2;
1733 if (ld_options[j].arg != NULL)
1734 {
1735 if (ld_options[j].opt.has_arg != optional_argument)
1736 {
1737 printf (" ");
1738 ++len;
1739 }
1740 printf ("%s", _(ld_options[j].arg));
1741 len += strlen (_(ld_options[j].arg));
1742 }
1743 comma = TRUE;
1744 }
1745 ++j;
1746 }
1747 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1748
1749 j = i;
1750 do
1751 {
1752 if (ld_options[j].opt.name != NULL
1753 && ld_options[j].control != NO_HELP)
1754 {
1755 int two_dashes =
1756 (ld_options[j].control == TWO_DASHES
1757 || ld_options[j].control == EXACTLY_TWO_DASHES);
1758
1759 printf ("%s-%s%s",
1760 comma ? ", " : "",
1761 two_dashes ? "-" : "",
1762 ld_options[j].opt.name);
1763 len += ((comma ? 2 : 0)
1764 + 1
1765 + (two_dashes ? 1 : 0)
1766 + strlen (ld_options[j].opt.name));
1767 if (ld_options[j].arg != NULL)
1768 {
1769 printf (" %s", _(ld_options[j].arg));
1770 len += 1 + strlen (_(ld_options[j].arg));
1771 }
1772 comma = TRUE;
1773 }
1774 ++j;
1775 }
1776 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1777
1778 if (len >= 30)
1779 {
1780 printf ("\n");
1781 len = 0;
1782 }
1783
1784 for (; len < 30; len++)
1785 putchar (' ');
1786
1787 printf ("%s\n", _(ld_options[i].doc));
1788 }
1789 }
1790 printf (_(" @FILE"));
1791 for (len = strlen (" @FILE"); len < 30; len++)
1792 putchar (' ');
1793 printf (_("Read options from FILE\n"));
1794
1795 /* Note: Various tools (such as libtool) depend upon the
1796 format of the listings below - do not change them. */
1797 /* xgettext:c-format */
1798 printf (_("%s: supported targets:"), program_name);
1799 targets = bfd_target_list ();
1800 for (pp = targets; *pp != NULL; pp++)
1801 printf (" %s", *pp);
1802 free (targets);
1803 printf ("\n");
1804
1805 /* xgettext:c-format */
1806 printf (_("%s: supported emulations: "), program_name);
1807 ldemul_list_emulations (stdout);
1808 printf ("\n");
1809
1810 /* xgettext:c-format */
1811 printf (_("%s: emulation specific options:\n"), program_name);
1812 ldemul_list_emulation_options (stdout);
1813 printf ("\n");
1814
1815 if (REPORT_BUGS_TO[0])
1816 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1817 }
git-cvsimport of binutils cvsroot