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* objdump.c (slurp_file): Close file if fstat fails.
[binutils.git] / ld / lexsup.c
blob7c1bc46fecb4b2e2dcb3c717365f880355d05561
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, 2012
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 /* Codes used for the long options with no short synonyms. 150 isn't
66 special; it's just an arbitrary non-ASCII char value. */
67 enum option_values
68 {
69 OPTION_ASSERT = 150,
70 OPTION_CALL_SHARED,
71 OPTION_CREF,
72 OPTION_DEFSYM,
73 OPTION_DEMANGLE,
74 OPTION_DYNAMIC_LINKER,
75 OPTION_SYSROOT,
76 OPTION_EB,
77 OPTION_EL,
78 OPTION_EMBEDDED_RELOCS,
79 OPTION_EXPORT_DYNAMIC,
80 OPTION_NO_EXPORT_DYNAMIC,
81 OPTION_HELP,
82 OPTION_IGNORE,
83 OPTION_MAP,
84 OPTION_NO_DEMANGLE,
85 OPTION_NO_KEEP_MEMORY,
86 OPTION_NO_WARN_MISMATCH,
87 OPTION_NO_WARN_SEARCH_MISMATCH,
88 OPTION_NOINHIBIT_EXEC,
89 OPTION_NON_SHARED,
90 OPTION_NO_WHOLE_ARCHIVE,
91 OPTION_OFORMAT,
92 OPTION_RELAX,
93 OPTION_NO_RELAX,
94 OPTION_RETAIN_SYMBOLS_FILE,
95 OPTION_RPATH,
96 OPTION_RPATH_LINK,
97 OPTION_SHARED,
98 OPTION_SONAME,
99 OPTION_SORT_COMMON,
100 OPTION_SORT_SECTION,
101 OPTION_STATS,
102 OPTION_SYMBOLIC,
103 OPTION_SYMBOLIC_FUNCTIONS,
104 OPTION_TASK_LINK,
105 OPTION_TBSS,
106 OPTION_TDATA,
107 OPTION_TTEXT,
108 OPTION_TTEXT_SEGMENT,
109 OPTION_TRADITIONAL_FORMAT,
110 OPTION_UR,
111 OPTION_VERBOSE,
112 OPTION_VERSION,
113 OPTION_VERSION_SCRIPT,
114 OPTION_VERSION_EXPORTS_SECTION,
115 OPTION_DYNAMIC_LIST,
116 OPTION_DYNAMIC_LIST_CPP_NEW,
117 OPTION_DYNAMIC_LIST_CPP_TYPEINFO,
118 OPTION_DYNAMIC_LIST_DATA,
119 OPTION_WARN_COMMON,
120 OPTION_WARN_CONSTRUCTORS,
121 OPTION_WARN_FATAL,
122 OPTION_NO_WARN_FATAL,
123 OPTION_WARN_MULTIPLE_GP,
124 OPTION_WARN_ONCE,
125 OPTION_WARN_SECTION_ALIGN,
126 OPTION_SPLIT_BY_RELOC,
127 OPTION_SPLIT_BY_FILE ,
128 OPTION_WHOLE_ARCHIVE,
129 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC,
130 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC,
131 OPTION_ADD_DT_NEEDED_FOR_REGULAR,
132 OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR,
133 OPTION_WRAP,
134 OPTION_FORCE_EXE_SUFFIX,
135 OPTION_GC_SECTIONS,
136 OPTION_NO_GC_SECTIONS,
137 OPTION_PRINT_GC_SECTIONS,
138 OPTION_NO_PRINT_GC_SECTIONS,
139 OPTION_HASH_SIZE,
140 OPTION_CHECK_SECTIONS,
141 OPTION_NO_CHECK_SECTIONS,
142 OPTION_NO_UNDEFINED,
143 OPTION_INIT,
144 OPTION_FINI,
145 OPTION_SECTION_START,
146 OPTION_UNIQUE,
147 OPTION_TARGET_HELP,
148 OPTION_ALLOW_SHLIB_UNDEFINED,
149 OPTION_NO_ALLOW_SHLIB_UNDEFINED,
150 OPTION_ALLOW_MULTIPLE_DEFINITION,
151 OPTION_NO_UNDEFINED_VERSION,
152 OPTION_DEFAULT_SYMVER,
153 OPTION_DEFAULT_IMPORTED_SYMVER,
154 OPTION_DISCARD_NONE,
155 OPTION_SPARE_DYNAMIC_TAGS,
156 OPTION_NO_DEFINE_COMMON,
157 OPTION_NOSTDLIB,
158 OPTION_NO_OMAGIC,
159 OPTION_STRIP_DISCARDED,
160 OPTION_NO_STRIP_DISCARDED,
161 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
162 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
163 OPTION_PIE,
164 OPTION_UNRESOLVED_SYMBOLS,
165 OPTION_WARN_UNRESOLVED_SYMBOLS,
166 OPTION_ERROR_UNRESOLVED_SYMBOLS,
167 OPTION_WARN_SHARED_TEXTREL,
168 OPTION_WARN_ALTERNATE_EM,
169 OPTION_REDUCE_MEMORY_OVERHEADS,
170 #ifdef ENABLE_PLUGINS
171 OPTION_PLUGIN,
172 OPTION_PLUGIN_OPT,
173 #endif /* ENABLE_PLUGINS */
174 OPTION_DEFAULT_SCRIPT,
175 OPTION_PRINT_OUTPUT_FORMAT,
176 };
177
178 /* The long options. This structure is used for both the option
179 parsing and the help text. */
180
181 enum control_enum {
182 /* Use one dash before long option name. */
183 ONE_DASH,
184 /* Use two dashes before long option name. */
185 TWO_DASHES,
186 /* Only accept two dashes before the long option name.
187 This is an overloading of the use of this enum, since originally it
188 was only intended to tell the --help display function how to display
189 the long option name. This feature was added in order to resolve
190 the confusion about the -omagic command line switch. Is it setting
191 the output file name to "magic" or is it setting the NMAGIC flag on
192 the output ? It has been decided that it is setting the output file
193 name, and that if you want to set the NMAGIC flag you should use -N
194 or --omagic. */
195 EXACTLY_TWO_DASHES,
196 /* Don't mention this option in --help output. */
197 NO_HELP
198 };
199
200 struct ld_option
201 {
202 /* The long option information. */
203 struct option opt;
204 /* The short option with the same meaning ('\0' if none). */
205 char shortopt;
206 /* The name of the argument (NULL if none). */
207 const char *arg;
208 /* The documentation string. If this is NULL, this is a synonym for
209 the previous option. */
210 const char *doc;
211 enum control_enum control;
212 };
213
214 static const struct ld_option ld_options[] =
215 {
216 { {NULL, required_argument, NULL, '\0'},
217 'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
218 ONE_DASH },
219 { {"architecture", required_argument, NULL, 'A'},
220 'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
221 { {"format", required_argument, NULL, 'b'},
222 'b', N_("TARGET"), N_("Specify target for following input files"),
223 TWO_DASHES },
224 { {"mri-script", required_argument, NULL, 'c'},
225 'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
226 { {"dc", no_argument, NULL, 'd'},
227 'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
228 { {"dp", no_argument, NULL, 'd'},
229 '\0', NULL, NULL, ONE_DASH },
230 { {"entry", required_argument, NULL, 'e'},
231 'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
232 { {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
233 'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
234 { {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
235 '\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
236 { {"EB", no_argument, NULL, OPTION_EB},
237 '\0', NULL, N_("Link big-endian objects"), ONE_DASH },
238 { {"EL", no_argument, NULL, OPTION_EL},
239 '\0', NULL, N_("Link little-endian objects"), ONE_DASH },
240 { {"auxiliary", required_argument, NULL, 'f'},
241 'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
242 TWO_DASHES },
243 { {"filter", required_argument, NULL, 'F'},
244 'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
245 TWO_DASHES },
246 { {NULL, no_argument, NULL, '\0'},
247 'g', NULL, N_("Ignored"), ONE_DASH },
248 { {"gpsize", required_argument, NULL, 'G'},
249 'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
250 TWO_DASHES },
251 { {"soname", required_argument, NULL, OPTION_SONAME},
252 'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
253 { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
254 'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
255 TWO_DASHES },
256 { {"library", required_argument, NULL, 'l'},
257 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
258 { {"library-path", required_argument, NULL, 'L'},
259 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
260 TWO_DASHES },
261 { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
262 '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
263 { {NULL, required_argument, NULL, '\0'},
264 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
265 { {"print-map", no_argument, NULL, 'M'},
266 'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
267 { {"nmagic", no_argument, NULL, 'n'},
268 'n', NULL, N_("Do not page align data"), TWO_DASHES },
269 { {"omagic", no_argument, NULL, 'N'},
270 'N', NULL, N_("Do not page align data, do not make text readonly"),
271 EXACTLY_TWO_DASHES },
272 { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
273 '\0', NULL, N_("Page align data, make text readonly"),
274 EXACTLY_TWO_DASHES },
275 { {"output", required_argument, NULL, 'o'},
276 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
277 { {NULL, required_argument, NULL, '\0'},
278 'O', NULL, N_("Optimize output file"), ONE_DASH },
279 #ifdef ENABLE_PLUGINS
280 { {"plugin", required_argument, NULL, OPTION_PLUGIN},
281 '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
282 { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
283 '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
284 { {"flto", optional_argument, NULL, OPTION_IGNORE},
285 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
286 ONE_DASH },
287 { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
288 '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
289 ONE_DASH },
290 #endif /* ENABLE_PLUGINS */
291 { {"Qy", no_argument, NULL, OPTION_IGNORE},
292 '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
293 { {"emit-relocs", no_argument, NULL, 'q'},
294 'q', NULL, "Generate relocations in final output", TWO_DASHES },
295 { {"relocatable", no_argument, NULL, 'r'},
296 'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
297 { {NULL, no_argument, NULL, '\0'},
298 'i', NULL, NULL, ONE_DASH },
299 { {"just-symbols", required_argument, NULL, 'R'},
300 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
301 TWO_DASHES },
302 { {"strip-all", no_argument, NULL, 's'},
303 's', NULL, N_("Strip all symbols"), TWO_DASHES },
304 { {"strip-debug", no_argument, NULL, 'S'},
305 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
306 { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
307 '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
308 { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
309 '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
310 { {"trace", no_argument, NULL, 't'},
311 't', NULL, N_("Trace file opens"), TWO_DASHES },
312 { {"script", required_argument, NULL, 'T'},
313 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
314 { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
315 '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
316 { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
317 '\0', NULL, NULL, ONE_DASH },
318 { {"undefined", required_argument, NULL, 'u'},
319 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
320 TWO_DASHES },
321 { {"unique", optional_argument, NULL, OPTION_UNIQUE},
322 '\0', N_("[=SECTION]"),
323 N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES },
324 { {"Ur", no_argument, NULL, OPTION_UR},
325 '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
326 { {"version", no_argument, NULL, OPTION_VERSION},
327 'v', NULL, N_("Print version information"), TWO_DASHES },
328 { {NULL, no_argument, NULL, '\0'},
329 'V', NULL, N_("Print version and emulation information"), ONE_DASH },
330 { {"discard-all", no_argument, NULL, 'x'},
331 'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
332 { {"discard-locals", no_argument, NULL, 'X'},
333 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
334 { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
335 '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
336 { {"trace-symbol", required_argument, NULL, 'y'},
337 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
338 { {NULL, required_argument, NULL, '\0'},
339 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
340 ONE_DASH },
341 { {"start-group", no_argument, NULL, '('},
342 '(', NULL, N_("Start a group"), TWO_DASHES },
343 { {"end-group", no_argument, NULL, ')'},
344 ')', NULL, N_("End a group"), TWO_DASHES },
345 { {"accept-unknown-input-arch", no_argument, NULL,
346 OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
347 '\0', NULL,
348 N_("Accept input files whose architecture cannot be determined"),
349 TWO_DASHES },
350 { {"no-accept-unknown-input-arch", no_argument, NULL,
351 OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
352 '\0', NULL, N_("Reject input files whose architecture is unknown"),
353 TWO_DASHES },
354
355 /* The next two options are deprecated because of their similarity to
356 --as-needed and --no-as-needed. They have been replaced by
357 --copy-dt-needed-entries and --no-copy-dt-needed-entries. */
358 { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
359 '\0', NULL, NULL, NO_HELP },
360 { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
361 '\0', NULL, NULL, NO_HELP },
362
363 { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},
364 '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),
365 TWO_DASHES },
366 { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},
367 '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"
368 " the command line"),
369 TWO_DASHES },
370 { {"assert", required_argument, NULL, OPTION_ASSERT},
371 '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },
372 { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
373 '\0', NULL, N_("Link against shared libraries"), ONE_DASH },
374 { {"dy", no_argument, NULL, OPTION_CALL_SHARED},
375 '\0', NULL, NULL, ONE_DASH },
376 { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
377 '\0', NULL, NULL, ONE_DASH },
378 { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
379 '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
380 { {"dn", no_argument, NULL, OPTION_NON_SHARED},
381 '\0', NULL, NULL, ONE_DASH },
382 { {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
383 '\0', NULL, NULL, ONE_DASH },
384 { {"static", no_argument, NULL, OPTION_NON_SHARED},
385 '\0', NULL, NULL, ONE_DASH },
386 { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
387 '\0', NULL, N_("Bind global references locally"), ONE_DASH },
388 { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
389 '\0', NULL, N_("Bind global function references locally"), ONE_DASH },
390 { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
391 '\0', NULL, N_("Check section addresses for overlaps (default)"),
392 TWO_DASHES },
393 { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},
394 '\0', NULL, N_("Do not check section addresses for overlaps"),
395 TWO_DASHES },
396 { {"copy-dt-needed-entries", no_argument, NULL,
397 OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},
398 '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),
399 TWO_DASHES },
400 { {"no-copy-dt-needed-entries", no_argument, NULL,
401 OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},
402 '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),
403 TWO_DASHES },
404
405 { {"cref", no_argument, NULL, OPTION_CREF},
406 '\0', NULL, N_("Output cross reference table"), TWO_DASHES },
407 { {"defsym", required_argument, NULL, OPTION_DEFSYM},
408 '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
409 { {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
410 '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
411 TWO_DASHES },
412 { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
413 '\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
414 { {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
415 '\0', NULL, N_("Treat warnings as errors"),
416 TWO_DASHES },
417 { {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
418 '\0', NULL, N_("Do not treat warnings as errors (default)"),
419 TWO_DASHES },
420 { {"fini", required_argument, NULL, OPTION_FINI},
421 '\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
422 { {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
423 '\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
424 { {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
425 '\0', NULL, N_("Remove unused sections (on some targets)"),
426 TWO_DASHES },
427 { {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
428 '\0', NULL, N_("Don't remove unused sections (default)"),
429 TWO_DASHES },
430 { {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
431 '\0', NULL, N_("List removed unused sections on stderr"),
432 TWO_DASHES },
433 { {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
434 '\0', NULL, N_("Do not list removed unused sections"),
435 TWO_DASHES },
436 { {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
437 '\0', NULL, N_("Set default hash table size close to <NUMBER>"),
438 TWO_DASHES },
439 { {"help", no_argument, NULL, OPTION_HELP},
440 '\0', NULL, N_("Print option help"), TWO_DASHES },
441 { {"init", required_argument, NULL, OPTION_INIT},
442 '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
443 { {"Map", required_argument, NULL, OPTION_MAP},
444 '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
445 { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
446 '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
447 { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
448 '\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
449 { {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
450 '\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
451 { {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
452 '\0', NULL, N_("Do not allow unresolved references in object files"),
453 TWO_DASHES },
454 { {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
455 '\0', NULL, N_("Allow unresolved references in shared libraries"),
456 TWO_DASHES },
457 { {"no-allow-shlib-undefined", no_argument, NULL,
458 OPTION_NO_ALLOW_SHLIB_UNDEFINED},
459 '\0', NULL, N_("Do not allow unresolved references in shared libs"),
460 TWO_DASHES },
461 { {"allow-multiple-definition", no_argument, NULL,
462 OPTION_ALLOW_MULTIPLE_DEFINITION},
463 '\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
464 { {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
465 '\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
466 { {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
467 '\0', NULL, N_("Create default symbol version"), TWO_DASHES },
468 { {"default-imported-symver", no_argument, NULL,
469 OPTION_DEFAULT_IMPORTED_SYMVER},
470 '\0', NULL, N_("Create default symbol version for imported symbols"),
471 TWO_DASHES },
472 { {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
473 '\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
474 { {"no-warn-search-mismatch", no_argument, NULL,
475 OPTION_NO_WARN_SEARCH_MISMATCH},
476 '\0', NULL, N_("Don't warn on finding an incompatible library"),
477 TWO_DASHES},
478 { {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
479 '\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
480 { {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
481 '\0', NULL, N_("Create an output file even if errors occur"),
482 TWO_DASHES },
483 { {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
484 '\0', NULL, NULL, NO_HELP },
485 { {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
486 '\0', NULL, N_("Only use library directories specified on\n"
487 " the command line"),
488 ONE_DASH },
489 { {"oformat", required_argument, NULL, OPTION_OFORMAT},
490 '\0', N_("TARGET"), N_("Specify target of output file"),
491 EXACTLY_TWO_DASHES },
492 { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT},
493 '\0', NULL, N_("Print default output format"), TWO_DASHES },
494 { {"qmagic", no_argument, NULL, OPTION_IGNORE},
495 '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
496 { {"reduce-memory-overheads", no_argument, NULL,
497 OPTION_REDUCE_MEMORY_OVERHEADS},
498 '\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
499 TWO_DASHES },
500 { {"relax", no_argument, NULL, OPTION_RELAX},
501 '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
502 { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
503 '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
504 { {"retain-symbols-file", required_argument, NULL,
505 OPTION_RETAIN_SYMBOLS_FILE},
506 '\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
507 { {"rpath", required_argument, NULL, OPTION_RPATH},
508 '\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
509 { {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
510 '\0', N_("PATH"), N_("Set link time shared library search path"),
511 ONE_DASH },
512 { {"shared", no_argument, NULL, OPTION_SHARED},
513 '\0', NULL, N_("Create a shared library"), ONE_DASH },
514 { {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
515 '\0', NULL, NULL, ONE_DASH },
516 { {"pie", no_argument, NULL, OPTION_PIE},
517 '\0', NULL, N_("Create a position independent executable"), ONE_DASH },
518 { {"pic-executable", no_argument, NULL, OPTION_PIE},
519 '\0', NULL, NULL, TWO_DASHES },
520 { {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
521 '\0', N_("[=ascending|descending]"),
522 N_("Sort common symbols by alignment [in specified order]"),
523 TWO_DASHES },
524 { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
525 '\0', NULL, NULL, NO_HELP },
526 { {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
527 '\0', N_("name|alignment"),
528 N_("Sort sections by name or maximum alignment"), TWO_DASHES },
529 { {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
530 '\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
531 TWO_DASHES },
532 { {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
533 '\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
534 TWO_DASHES },
535 { {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
536 '\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
537 TWO_DASHES },
538 { {"stats", no_argument, NULL, OPTION_STATS},
539 '\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
540 { {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
541 '\0', NULL, N_("Display target specific options"), TWO_DASHES },
542 { {"task-link", required_argument, NULL, OPTION_TASK_LINK},
543 '\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
544 { {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
545 '\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
546 { {"section-start", required_argument, NULL, OPTION_SECTION_START},
547 '\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
548 TWO_DASHES },
549 { {"Tbss", required_argument, NULL, OPTION_TBSS},
550 '\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
551 { {"Tdata", required_argument, NULL, OPTION_TDATA},
552 '\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
553 { {"Ttext", required_argument, NULL, OPTION_TTEXT},
554 '\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
555 { {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
556 '\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
557 { {"unresolved-symbols=<method>", required_argument, NULL,
558 OPTION_UNRESOLVED_SYMBOLS},
559 '\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
560 " ignore-all, report-all, ignore-in-object-files,\n"
561 " ignore-in-shared-libs"),
562 TWO_DASHES },
563 { {"verbose", optional_argument, NULL, OPTION_VERBOSE},
564 '\0', N_("[=NUMBER]"),
565 N_("Output lots of information during link"), TWO_DASHES },
566 { {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
567 '\0', NULL, NULL, NO_HELP },
568 { {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
569 '\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
570 { {"version-exports-section", required_argument, NULL,
571 OPTION_VERSION_EXPORTS_SECTION },
572 '\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
573 " SYMBOL as the version."),
574 TWO_DASHES },
575 { {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
576 '\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
577 { {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
578 '\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
579 { {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
580 '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
581 { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
582 '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
583 { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
584 '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
585 { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
586 '\0', NULL, N_("Warn if global constructors/destructors are seen"),
587 TWO_DASHES },
588 { {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
589 '\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
590 { {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
591 '\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
592 { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
593 '\0', NULL, N_("Warn if start of section changes due to alignment"),
594 TWO_DASHES },
595 { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
596 '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
597 TWO_DASHES },
598 { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
599 '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
600 TWO_DASHES },
601 { {"warn-unresolved-symbols", no_argument, NULL,
602 OPTION_WARN_UNRESOLVED_SYMBOLS},
603 '\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
604 { {"error-unresolved-symbols", no_argument, NULL,
605 OPTION_ERROR_UNRESOLVED_SYMBOLS},
606 '\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
607 { {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
608 '\0', NULL, N_("Include all objects from following archives"),
609 TWO_DASHES },
610 { {"wrap", required_argument, NULL, OPTION_WRAP},
611 '\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
612 };
613
614 #define OPTION_COUNT ARRAY_SIZE (ld_options)
615
616 void
617 parse_args (unsigned argc, char **argv)
618 {
619 unsigned i;
620 int is, il, irl;
621 int ingroup = 0;
622 char *default_dirlist = NULL;
623 char *shortopts;
624 struct option *longopts;
625 struct option *really_longopts;
626 int last_optind;
627 enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
628
629 shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
630 longopts = (struct option *)
631 xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
632 really_longopts = (struct option *)
633 malloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
634
635 /* Starting the short option string with '-' is for programs that
636 expect options and other ARGV-elements in any order and that care about
637 the ordering of the two. We describe each non-option ARGV-element
638 as if it were the argument of an option with character code 1. */
639 shortopts[0] = '-';
640 is = 1;
641 il = 0;
642 irl = 0;
643 for (i = 0; i < OPTION_COUNT; i++)
644 {
645 if (ld_options[i].shortopt != '\0')
646 {
647 shortopts[is] = ld_options[i].shortopt;
648 ++is;
649 if (ld_options[i].opt.has_arg == required_argument
650 || ld_options[i].opt.has_arg == optional_argument)
651 {
652 shortopts[is] = ':';
653 ++is;
654 if (ld_options[i].opt.has_arg == optional_argument)
655 {
656 shortopts[is] = ':';
657 ++is;
658 }
659 }
660 }
661 if (ld_options[i].opt.name != NULL)
662 {
663 if (ld_options[i].control == EXACTLY_TWO_DASHES)
664 {
665 really_longopts[irl] = ld_options[i].opt;
666 ++irl;
667 }
668 else
669 {
670 longopts[il] = ld_options[i].opt;
671 ++il;
672 }
673 }
674 }
675 shortopts[is] = '\0';
676 longopts[il].name = NULL;
677 really_longopts[irl].name = NULL;
678
679 ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
680
681 /* The -G option is ambiguous on different platforms. Sometimes it
682 specifies the largest data size to put into the small data
683 section. Sometimes it is equivalent to --shared. Unfortunately,
684 the first form takes an argument, while the second does not.
685
686 We need to permit the --shared form because on some platforms,
687 such as Solaris, gcc -shared will pass -G to the linker.
688
689 To permit either usage, we look through the argument list. If we
690 find -G not followed by a number, we change it into --shared.
691 This will work for most normal cases. */
692 for (i = 1; i < argc; i++)
693 if (strcmp (argv[i], "-G") == 0
694 && (i + 1 >= argc
695 || ! ISDIGIT (argv[i + 1][0])))
696 argv[i] = (char *) "--shared";
697
698 /* Because we permit long options to start with a single dash, and
699 we have a --library option, and the -l option is conventionally
700 used with an immediately following argument, we can have bad
701 results if somebody tries to use -l with a library whose name
702 happens to start with "ibrary", as in -li. We avoid problems by
703 simply turning -l into --library. This means that users will
704 have to use two dashes in order to use --library, which is OK
705 since that's how it is documented.
706
707 FIXME: It's possible that this problem can arise for other short
708 options as well, although the user does always have the recourse
709 of adding a space between the option and the argument. */
710 for (i = 1; i < argc; i++)
711 {
712 if (argv[i][0] == '-'
713 && argv[i][1] == 'l'
714 && argv[i][2] != '\0')
715 {
716 char *n;
717
718 n = (char *) xmalloc (strlen (argv[i]) + 20);
719 sprintf (n, "--library=%s", argv[i] + 2);
720 argv[i] = n;
721 }
722 }
723
724 last_optind = -1;
725 while (1)
726 {
727 int longind;
728 int optc;
729 static unsigned int defsym_count;
730
731 /* Using last_optind lets us avoid calling ldemul_parse_args
732 multiple times on a single option, which would lead to
733 confusion in the internal static variables maintained by
734 getopt. This could otherwise happen for an argument like
735 -nx, in which the -n is parsed as a single option, and we
736 loop around to pick up the -x. */
737 if (optind != last_optind)
738 if (ldemul_parse_args (argc, argv))
739 continue;
740
741 /* getopt_long_only is like getopt_long, but '-' as well as '--'
742 can indicate a long option. */
743 opterr = 0;
744 last_optind = optind;
745 optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
746 if (optc == '?')
747 {
748 optind = last_optind;
749 optc = getopt_long (argc, argv, "-", really_longopts, &longind);
750 }
751
752 if (ldemul_handle_option (optc))
753 continue;
754
755 if (optc == -1)
756 break;
757
758 switch (optc)
759 {
760 case '?':
761 einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
762 /* Fall through. */
763
764 default:
765 einfo (_("%P%F: use the --help option for usage information\n"));
766
767 case 1: /* File name. */
768 lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
769 break;
770
771 case OPTION_IGNORE:
772 break;
773 case 'a':
774 /* For HP/UX compatibility. Actually -a shared should mean
775 ``use only shared libraries'' but, then, we don't
776 currently support shared libraries on HP/UX anyhow. */
777 if (strcmp (optarg, "archive") == 0)
778 config.dynamic_link = FALSE;
779 else if (strcmp (optarg, "shared") == 0
780 || strcmp (optarg, "default") == 0)
781 config.dynamic_link = TRUE;
782 else
783 einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
784 break;
785 case OPTION_ASSERT:
786 /* FIXME: We just ignore these, but we should handle them. */
787 if (strcmp (optarg, "definitions") == 0)
788 ;
789 else if (strcmp (optarg, "nodefinitions") == 0)
790 ;
791 else if (strcmp (optarg, "nosymbolic") == 0)
792 ;
793 else if (strcmp (optarg, "pure-text") == 0)
794 ;
795 else
796 einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
797 break;
798 case 'A':
799 ldfile_add_arch (optarg);
800 break;
801 case 'b':
802 lang_add_target (optarg);
803 break;
804 case 'c':
805 ldfile_open_command_file (optarg);
806 parser_input = input_mri_script;
807 yyparse ();
808 break;
809 case OPTION_CALL_SHARED:
810 config.dynamic_link = TRUE;
811 break;
812 case OPTION_NON_SHARED:
813 config.dynamic_link = FALSE;
814 break;
815 case OPTION_CREF:
816 command_line.cref = TRUE;
817 link_info.notice_all = TRUE;
818 break;
819 case 'd':
820 command_line.force_common_definition = TRUE;
821 break;
822 case OPTION_DEFSYM:
823 lex_string = optarg;
824 lex_redirect (optarg, "--defsym", ++defsym_count);
825 parser_input = input_defsym;
826 yyparse ();
827 lex_string = NULL;
828 break;
829 case OPTION_DEMANGLE:
830 demangling = TRUE;
831 if (optarg != NULL)
832 {
833 enum demangling_styles style;
834
835 style = cplus_demangle_name_to_style (optarg);
836 if (style == unknown_demangling)
837 einfo (_("%F%P: unknown demangling style `%s'"),
838 optarg);
839
840 cplus_demangle_set_style (style);
841 }
842 break;
843 case 'I': /* Used on Solaris. */
844 case OPTION_DYNAMIC_LINKER:
845 command_line.interpreter = optarg;
846 break;
847 case OPTION_SYSROOT:
848 /* Already handled in ldmain.c. */
849 break;
850 case OPTION_EB:
851 command_line.endian = ENDIAN_BIG;
852 break;
853 case OPTION_EL:
854 command_line.endian = ENDIAN_LITTLE;
855 break;
856 case OPTION_EMBEDDED_RELOCS:
857 command_line.embedded_relocs = TRUE;
858 break;
859 case OPTION_EXPORT_DYNAMIC:
860 case 'E': /* HP/UX compatibility. */
861 link_info.export_dynamic = TRUE;
862 break;
863 case OPTION_NO_EXPORT_DYNAMIC:
864 link_info.export_dynamic = FALSE;
865 break;
866 case 'e':
867 lang_add_entry (optarg, TRUE);
868 break;
869 case 'f':
870 if (command_line.auxiliary_filters == NULL)
871 {
872 command_line.auxiliary_filters = (char **)
873 xmalloc (2 * sizeof (char *));
874 command_line.auxiliary_filters[0] = optarg;
875 command_line.auxiliary_filters[1] = NULL;
876 }
877 else
878 {
879 int c;
880 char **p;
881
882 c = 0;
883 for (p = command_line.auxiliary_filters; *p != NULL; p++)
884 ++c;
885 command_line.auxiliary_filters = (char **)
886 xrealloc (command_line.auxiliary_filters,
887 (c + 2) * sizeof (char *));
888 command_line.auxiliary_filters[c] = optarg;
889 command_line.auxiliary_filters[c + 1] = NULL;
890 }
891 break;
892 case 'F':
893 command_line.filter_shlib = optarg;
894 break;
895 case OPTION_FORCE_EXE_SUFFIX:
896 command_line.force_exe_suffix = TRUE;
897 break;
898 case 'G':
899 {
900 char *end;
901 g_switch_value = strtoul (optarg, &end, 0);
902 if (*end)
903 einfo (_("%P%F: invalid number `%s'\n"), optarg);
904 }
905 break;
906 case 'g':
907 /* Ignore. */
908 break;
909 case OPTION_GC_SECTIONS:
910 link_info.gc_sections = TRUE;
911 break;
912 case OPTION_PRINT_GC_SECTIONS:
913 link_info.print_gc_sections = TRUE;
914 break;
915 case OPTION_HELP:
916 help ();
917 xexit (0);
918 break;
919 case 'L':
920 ldfile_add_library_path (optarg, TRUE);
921 break;
922 case 'l':
923 lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
924 break;
925 case 'M':
926 config.map_filename = "-";
927 break;
928 case 'm':
929 /* Ignore. Was handled in a pre-parse. */
930 break;
931 case OPTION_MAP:
932 config.map_filename = optarg;
933 break;
934 case 'N':
935 config.text_read_only = FALSE;
936 config.magic_demand_paged = FALSE;
937 config.dynamic_link = FALSE;
938 break;
939 case OPTION_NO_OMAGIC:
940 config.text_read_only = TRUE;
941 config.magic_demand_paged = TRUE;
942 /* NB/ Does not set dynamic_link to TRUE.
943 Use --call-shared or -Bdynamic for this. */
944 break;
945 case 'n':
946 config.magic_demand_paged = FALSE;
947 config.dynamic_link = FALSE;
948 break;
949 case OPTION_NO_DEFINE_COMMON:
950 command_line.inhibit_common_definition = TRUE;
951 break;
952 case OPTION_NO_DEMANGLE:
953 demangling = FALSE;
954 break;
955 case OPTION_NO_GC_SECTIONS:
956 link_info.gc_sections = FALSE;
957 break;
958 case OPTION_NO_PRINT_GC_SECTIONS:
959 link_info.print_gc_sections = FALSE;
960 break;
961 case OPTION_NO_KEEP_MEMORY:
962 link_info.keep_memory = FALSE;
963 break;
964 case OPTION_NO_UNDEFINED:
965 link_info.unresolved_syms_in_objects
966 = how_to_report_unresolved_symbols;
967 break;
968 case OPTION_ALLOW_SHLIB_UNDEFINED:
969 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
970 break;
971 case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
972 link_info.unresolved_syms_in_shared_libs
973 = how_to_report_unresolved_symbols;
974 break;
975 case OPTION_UNRESOLVED_SYMBOLS:
976 if (strcmp (optarg, "ignore-all") == 0)
977 {
978 link_info.unresolved_syms_in_objects = RM_IGNORE;
979 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
980 }
981 else if (strcmp (optarg, "report-all") == 0)
982 {
983 link_info.unresolved_syms_in_objects
984 = how_to_report_unresolved_symbols;
985 link_info.unresolved_syms_in_shared_libs
986 = how_to_report_unresolved_symbols;
987 }
988 else if (strcmp (optarg, "ignore-in-object-files") == 0)
989 {
990 link_info.unresolved_syms_in_objects = RM_IGNORE;
991 link_info.unresolved_syms_in_shared_libs
992 = how_to_report_unresolved_symbols;
993 }
994 else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
995 {
996 link_info.unresolved_syms_in_objects
997 = how_to_report_unresolved_symbols;
998 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
999 }
1000 else
1001 einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
1002 break;
1003 case OPTION_WARN_UNRESOLVED_SYMBOLS:
1004 how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
1005 if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
1006 link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
1007 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
1008 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
1009 break;
1010
1011 case OPTION_ERROR_UNRESOLVED_SYMBOLS:
1012 how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
1013 if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
1014 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
1015 if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
1016 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
1017 break;
1018 case OPTION_ALLOW_MULTIPLE_DEFINITION:
1019 link_info.allow_multiple_definition = TRUE;
1020 break;
1021 case OPTION_NO_UNDEFINED_VERSION:
1022 link_info.allow_undefined_version = FALSE;
1023 break;
1024 case OPTION_DEFAULT_SYMVER:
1025 link_info.create_default_symver = TRUE;
1026 break;
1027 case OPTION_DEFAULT_IMPORTED_SYMVER:
1028 link_info.default_imported_symver = TRUE;
1029 break;
1030 case OPTION_NO_WARN_MISMATCH:
1031 command_line.warn_mismatch = FALSE;
1032 break;
1033 case OPTION_NO_WARN_SEARCH_MISMATCH:
1034 command_line.warn_search_mismatch = FALSE;
1035 break;
1036 case OPTION_NOINHIBIT_EXEC:
1037 force_make_executable = TRUE;
1038 break;
1039 case OPTION_NOSTDLIB:
1040 config.only_cmd_line_lib_dirs = TRUE;
1041 break;
1042 case OPTION_NO_WHOLE_ARCHIVE:
1043 whole_archive = FALSE;
1044 break;
1045 case 'O':
1046 /* FIXME "-O<non-digits> <value>" used to set the address of
1047 section <non-digits>. Was this for compatibility with
1048 something, or can we create a new option to do that
1049 (with a syntax similar to -defsym)?
1050 getopt can't handle two args to an option without kludges. */
1051
1052 /* Enable optimizations of output files. */
1053 link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
1054 break;
1055 case 'o':
1056 lang_add_output (optarg, 0);
1057 break;
1058 case OPTION_OFORMAT:
1059 lang_add_output_format (optarg, NULL, NULL, 0);
1060 break;
1061 case OPTION_PRINT_OUTPUT_FORMAT:
1062 command_line.print_output_format = TRUE;
1063 break;
1064 #ifdef ENABLE_PLUGINS
1065 case OPTION_PLUGIN:
1066 if (plugin_opt_plugin (optarg))
1067 einfo (_("%P%F: %s: error loading plugin\n"),
1068 plugin_error_plugin ());
1069 break;
1070 case OPTION_PLUGIN_OPT:
1071 if (plugin_opt_plugin_arg (optarg))
1072 einfo(_("%P%F: bad -plugin-opt option\n"));
1073 break;
1074 #endif /* ENABLE_PLUGINS */
1075 case 'q':
1076 link_info.emitrelocations = TRUE;
1077 break;
1078 case 'i':
1079 case 'r':
1080 if (optind == last_optind)
1081 /* This can happen if the user put "-rpath,a" on the command
1082 line. (Or something similar. The comma is important).
1083 Getopt becomes confused and thinks that this is a -r option
1084 but it cannot parse the text after the -r so it refuses to
1085 increment the optind counter. Detect this case and issue
1086 an error message here. We cannot just make this a warning,
1087 increment optind, and continue because getopt is too confused
1088 and will seg-fault the next time around. */
1089 einfo(_("%P%F: bad -rpath option\n"));
1090
1091 link_info.relocatable = TRUE;
1092 config.build_constructors = FALSE;
1093 config.magic_demand_paged = FALSE;
1094 config.text_read_only = FALSE;
1095 config.dynamic_link = FALSE;
1096 break;
1097 case 'R':
1098 /* The GNU linker traditionally uses -R to mean to include
1099 only the symbols from a file. The Solaris linker uses -R
1100 to set the path used by the runtime linker to find
1101 libraries. This is the GNU linker -rpath argument. We
1102 try to support both simultaneously by checking the file
1103 named. If it is a directory, rather than a regular file,
1104 we assume -rpath was meant. */
1105 {
1106 struct stat s;
1107
1108 if (stat (optarg, &s) >= 0
1109 && ! S_ISDIR (s.st_mode))
1110 {
1111 lang_add_input_file (optarg,
1112 lang_input_file_is_symbols_only_enum,
1113 NULL);
1114 break;
1115 }
1116 }
1117 /* Fall through. */
1118 case OPTION_RPATH:
1119 if (command_line.rpath == NULL)
1120 command_line.rpath = xstrdup (optarg);
1121 else
1122 {
1123 size_t rpath_len = strlen (command_line.rpath);
1124 size_t optarg_len = strlen (optarg);
1125 char *buf;
1126 char *cp = command_line.rpath;
1127
1128 /* First see whether OPTARG is already in the path. */
1129 do
1130 {
1131 if (strncmp (optarg, cp, optarg_len) == 0
1132 && (cp[optarg_len] == 0
1133 || cp[optarg_len] == config.rpath_separator))
1134 /* We found it. */
1135 break;
1136
1137 /* Not yet found. */
1138 cp = strchr (cp, config.rpath_separator);
1139 if (cp != NULL)
1140 ++cp;
1141 }
1142 while (cp != NULL);
1143
1144 if (cp == NULL)
1145 {
1146 buf = (char *) xmalloc (rpath_len + optarg_len + 2);
1147 sprintf (buf, "%s%c%s", command_line.rpath,
1148 config.rpath_separator, optarg);
1149 free (command_line.rpath);
1150 command_line.rpath = buf;
1151 }
1152 }
1153 break;
1154 case OPTION_RPATH_LINK:
1155 if (command_line.rpath_link == NULL)
1156 command_line.rpath_link = xstrdup (optarg);
1157 else
1158 {
1159 char *buf;
1160
1161 buf = (char *) xmalloc (strlen (command_line.rpath_link)
1162 + strlen (optarg)
1163 + 2);
1164 sprintf (buf, "%s%c%s", command_line.rpath_link,
1165 config.rpath_separator, optarg);
1166 free (command_line.rpath_link);
1167 command_line.rpath_link = buf;
1168 }
1169 break;
1170 case OPTION_NO_RELAX:
1171 DISABLE_RELAXATION;
1172 break;
1173 case OPTION_RELAX:
1174 ENABLE_RELAXATION;
1175 break;
1176 case OPTION_RETAIN_SYMBOLS_FILE:
1177 add_keepsyms_file (optarg);
1178 break;
1179 case 'S':
1180 link_info.strip = strip_debugger;
1181 break;
1182 case 's':
1183 link_info.strip = strip_all;
1184 break;
1185 case OPTION_STRIP_DISCARDED:
1186 link_info.strip_discarded = TRUE;
1187 break;
1188 case OPTION_NO_STRIP_DISCARDED:
1189 link_info.strip_discarded = FALSE;
1190 break;
1191 case OPTION_SHARED:
1192 if (config.has_shared)
1193 {
1194 link_info.shared = TRUE;
1195 /* When creating a shared library, the default
1196 behaviour is to ignore any unresolved references. */
1197 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1198 link_info.unresolved_syms_in_objects = RM_IGNORE;
1199 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1200 link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
1201 }
1202 else
1203 einfo (_("%P%F: -shared not supported\n"));
1204 break;
1205 case OPTION_PIE:
1206 if (config.has_shared)
1207 {
1208 link_info.shared = TRUE;
1209 link_info.pie = TRUE;
1210 }
1211 else
1212 einfo (_("%P%F: -pie not supported\n"));
1213 break;
1214 case 'h': /* Used on Solaris. */
1215 case OPTION_SONAME:
1216 command_line.soname = optarg;
1217 break;
1218 case OPTION_SORT_COMMON:
1219 if (optarg == NULL
1220 || strcmp (optarg, N_("descending")) == 0)
1221 config.sort_common = sort_descending;
1222 else if (strcmp (optarg, N_("ascending")) == 0)
1223 config.sort_common = sort_ascending;
1224 else
1225 einfo (_("%P%F: invalid common section sorting option: %s\n"),
1226 optarg);
1227 break;
1228 case OPTION_SORT_SECTION:
1229 if (strcmp (optarg, N_("name")) == 0)
1230 sort_section = by_name;
1231 else if (strcmp (optarg, N_("alignment")) == 0)
1232 sort_section = by_alignment;
1233 else
1234 einfo (_("%P%F: invalid section sorting option: %s\n"),
1235 optarg);
1236 break;
1237 case OPTION_STATS:
1238 config.stats = TRUE;
1239 break;
1240 case OPTION_SYMBOLIC:
1241 command_line.symbolic = symbolic;
1242 break;
1243 case OPTION_SYMBOLIC_FUNCTIONS:
1244 command_line.symbolic = symbolic_functions;
1245 break;
1246 case 't':
1247 trace_files = TRUE;
1248 break;
1249 case 'T':
1250 previous_script_handle = saved_script_handle;
1251 ldfile_open_command_file (optarg);
1252 parser_input = input_script;
1253 yyparse ();
1254 previous_script_handle = NULL;
1255 break;
1256 case OPTION_DEFAULT_SCRIPT:
1257 command_line.default_script = optarg;
1258 break;
1259 case OPTION_SECTION_START:
1260 {
1261 char *optarg2;
1262 char *sec_name;
1263 int len;
1264
1265 /* Check for <something>=<somthing>... */
1266 optarg2 = strchr (optarg, '=');
1267 if (optarg2 == NULL)
1268 einfo (_("%P%F: invalid argument to option"
1269 " \"--section-start\"\n"));
1270
1271 optarg2++;
1272
1273 /* So far so good. Are all the args present? */
1274 if ((*optarg == '\0') || (*optarg2 == '\0'))
1275 einfo (_("%P%F: missing argument(s) to option"
1276 " \"--section-start\"\n"));
1277
1278 /* We must copy the section name as set_section_start
1279 doesn't do it for us. */
1280 len = optarg2 - optarg;
1281 sec_name = (char *) xmalloc (len);
1282 memcpy (sec_name, optarg, len - 1);
1283 sec_name[len - 1] = 0;
1284
1285 /* Then set it... */
1286 set_section_start (sec_name, optarg2);
1287 }
1288 break;
1289 case OPTION_TARGET_HELP:
1290 /* Mention any target specific options. */
1291 ldemul_list_emulation_options (stdout);
1292 exit (0);
1293 case OPTION_TBSS:
1294 set_segment_start (".bss", optarg);
1295 break;
1296 case OPTION_TDATA:
1297 set_segment_start (".data", optarg);
1298 break;
1299 case OPTION_TTEXT:
1300 set_segment_start (".text", optarg);
1301 break;
1302 case OPTION_TTEXT_SEGMENT:
1303 set_segment_start (".text-segment", optarg);
1304 break;
1305 case OPTION_TRADITIONAL_FORMAT:
1306 link_info.traditional_format = TRUE;
1307 break;
1308 case OPTION_TASK_LINK:
1309 link_info.task_link = TRUE;
1310 /* Fall through - do an implied -r option. */
1311 case OPTION_UR:
1312 link_info.relocatable = TRUE;
1313 config.build_constructors = TRUE;
1314 config.magic_demand_paged = FALSE;
1315 config.text_read_only = FALSE;
1316 config.dynamic_link = FALSE;
1317 break;
1318 case 'u':
1319 ldlang_add_undef (optarg, TRUE);
1320 break;
1321 case OPTION_UNIQUE:
1322 if (optarg != NULL)
1323 lang_add_unique (optarg);
1324 else
1325 config.unique_orphan_sections = TRUE;
1326 break;
1327 case OPTION_VERBOSE:
1328 ldversion (1);
1329 version_printed = TRUE;
1330 trace_file_tries = TRUE;
1331 overflow_cutoff_limit = -2;
1332 if (optarg != NULL)
1333 {
1334 char *end;
1335 int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
1336 if (*end)
1337 einfo (_("%P%F: invalid number `%s'\n"), optarg);
1338 #ifdef ENABLE_PLUGINS
1339 report_plugin_symbols = level > 1;
1340 #endif /* ENABLE_PLUGINS */
1341 }
1342 break;
1343 case 'v':
1344 ldversion (0);
1345 version_printed = TRUE;
1346 break;
1347 case 'V':
1348 ldversion (1);
1349 version_printed = TRUE;
1350 break;
1351 case OPTION_VERSION:
1352 ldversion (2);
1353 xexit (0);
1354 break;
1355 case OPTION_VERSION_SCRIPT:
1356 /* This option indicates a small script that only specifies
1357 version information. Read it, but don't assume that
1358 we've seen a linker script. */
1359 {
1360 FILE *hold_script_handle;
1361
1362 hold_script_handle = saved_script_handle;
1363 ldfile_open_command_file (optarg);
1364 saved_script_handle = hold_script_handle;
1365 parser_input = input_version_script;
1366 yyparse ();
1367 }
1368 break;
1369 case OPTION_VERSION_EXPORTS_SECTION:
1370 /* This option records a version symbol to be applied to the
1371 symbols listed for export to be found in the object files
1372 .exports sections. */
1373 command_line.version_exports_section = optarg;
1374 break;
1375 case OPTION_DYNAMIC_LIST_DATA:
1376 command_line.dynamic_list = dynamic_list_data;
1377 if (command_line.symbolic == symbolic)
1378 command_line.symbolic = symbolic_unset;
1379 break;
1380 case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
1381 lang_append_dynamic_list_cpp_typeinfo ();
1382 if (command_line.dynamic_list != dynamic_list_data)
1383 command_line.dynamic_list = dynamic_list;
1384 if (command_line.symbolic == symbolic)
1385 command_line.symbolic = symbolic_unset;
1386 break;
1387 case OPTION_DYNAMIC_LIST_CPP_NEW:
1388 lang_append_dynamic_list_cpp_new ();
1389 if (command_line.dynamic_list != dynamic_list_data)
1390 command_line.dynamic_list = dynamic_list;
1391 if (command_line.symbolic == symbolic)
1392 command_line.symbolic = symbolic_unset;
1393 break;
1394 case OPTION_DYNAMIC_LIST:
1395 /* This option indicates a small script that only specifies
1396 a dynamic list. Read it, but don't assume that we've
1397 seen a linker script. */
1398 {
1399 FILE *hold_script_handle;
1400
1401 hold_script_handle = saved_script_handle;
1402 ldfile_open_command_file (optarg);
1403 saved_script_handle = hold_script_handle;
1404 parser_input = input_dynamic_list;
1405 yyparse ();
1406 }
1407 if (command_line.dynamic_list != dynamic_list_data)
1408 command_line.dynamic_list = dynamic_list;
1409 if (command_line.symbolic == symbolic)
1410 command_line.symbolic = symbolic_unset;
1411 break;
1412 case OPTION_WARN_COMMON:
1413 config.warn_common = TRUE;
1414 break;
1415 case OPTION_WARN_CONSTRUCTORS:
1416 config.warn_constructors = TRUE;
1417 break;
1418 case OPTION_WARN_FATAL:
1419 config.fatal_warnings = TRUE;
1420 break;
1421 case OPTION_NO_WARN_FATAL:
1422 config.fatal_warnings = FALSE;
1423 break;
1424 case OPTION_WARN_MULTIPLE_GP:
1425 config.warn_multiple_gp = TRUE;
1426 break;
1427 case OPTION_WARN_ONCE:
1428 config.warn_once = TRUE;
1429 break;
1430 case OPTION_WARN_SECTION_ALIGN:
1431 config.warn_section_align = TRUE;
1432 break;
1433 case OPTION_WARN_SHARED_TEXTREL:
1434 link_info.warn_shared_textrel = TRUE;
1435 break;
1436 case OPTION_WARN_ALTERNATE_EM:
1437 link_info.warn_alternate_em = TRUE;
1438 break;
1439 case OPTION_WHOLE_ARCHIVE:
1440 whole_archive = TRUE;
1441 break;
1442 case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
1443 add_DT_NEEDED_for_dynamic = TRUE;
1444 break;
1445 case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
1446 add_DT_NEEDED_for_dynamic = FALSE;
1447 break;
1448 case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
1449 add_DT_NEEDED_for_regular = TRUE;
1450 break;
1451 case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
1452 add_DT_NEEDED_for_regular = FALSE;
1453 break;
1454 case OPTION_WRAP:
1455 add_wrap (optarg);
1456 break;
1457 case OPTION_DISCARD_NONE:
1458 link_info.discard = discard_none;
1459 break;
1460 case 'X':
1461 link_info.discard = discard_l;
1462 break;
1463 case 'x':
1464 link_info.discard = discard_all;
1465 break;
1466 case 'Y':
1467 if (CONST_STRNEQ (optarg, "P,"))
1468 optarg += 2;
1469 if (default_dirlist != NULL)
1470 free (default_dirlist);
1471 default_dirlist = xstrdup (optarg);
1472 break;
1473 case 'y':
1474 add_ysym (optarg);
1475 break;
1476 case OPTION_SPARE_DYNAMIC_TAGS:
1477 link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
1478 break;
1479 case OPTION_SPLIT_BY_RELOC:
1480 if (optarg != NULL)
1481 config.split_by_reloc = strtoul (optarg, NULL, 0);
1482 else
1483 config.split_by_reloc = 32768;
1484 break;
1485 case OPTION_SPLIT_BY_FILE:
1486 if (optarg != NULL)
1487 config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
1488 else
1489 config.split_by_file = 1;
1490 break;
1491 case OPTION_CHECK_SECTIONS:
1492 command_line.check_section_addresses = 1;
1493 break;
1494 case OPTION_NO_CHECK_SECTIONS:
1495 command_line.check_section_addresses = 0;
1496 break;
1497 case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
1498 command_line.accept_unknown_input_arch = TRUE;
1499 break;
1500 case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
1501 command_line.accept_unknown_input_arch = FALSE;
1502 break;
1503 case '(':
1504 lang_enter_group ();
1505 ingroup++;
1506 break;
1507 case ')':
1508 if (! ingroup)
1509 einfo (_("%P%F: group ended before it began (--help for usage)\n"));
1510
1511 lang_leave_group ();
1512 ingroup--;
1513 break;
1514
1515 case OPTION_INIT:
1516 link_info.init_function = optarg;
1517 break;
1518
1519 case OPTION_FINI:
1520 link_info.fini_function = optarg;
1521 break;
1522
1523 case OPTION_REDUCE_MEMORY_OVERHEADS:
1524 link_info.reduce_memory_overheads = TRUE;
1525 if (config.hash_table_size == 0)
1526 config.hash_table_size = 1021;
1527 break;
1528
1529 case OPTION_HASH_SIZE:
1530 {
1531 bfd_size_type new_size;
1532
1533 new_size = strtoul (optarg, NULL, 0);
1534 if (new_size)
1535 config.hash_table_size = new_size;
1536 else
1537 einfo (_("%P%X: --hash-size needs a numeric argument\n"));
1538 }
1539 break;
1540 }
1541 }
1542
1543 while (ingroup)
1544 {
1545 lang_leave_group ();
1546 ingroup--;
1547 }
1548
1549 if (default_dirlist != NULL)
1550 {
1551 set_default_dirlist (default_dirlist);
1552 free (default_dirlist);
1553 }
1554
1555 if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
1556 /* FIXME: Should we allow emulations a chance to set this ? */
1557 link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
1558
1559 if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
1560 /* FIXME: Should we allow emulations a chance to set this ? */
1561 link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
1562
1563 if (link_info.relocatable)
1564 {
1565 if (command_line.check_section_addresses < 0)
1566 command_line.check_section_addresses = 0;
1567 if (link_info.shared)
1568 einfo (_("%P%F: -r and -shared may not be used together\n"));
1569 }
1570
1571 /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
1572 --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
1573 --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are
1574 for shared libraries. -Bsymbolic overrides all others and vice
1575 versa. */
1576 switch (command_line.symbolic)
1577 {
1578 case symbolic_unset:
1579 break;
1580 case symbolic:
1581 /* -Bsymbolic is for shared library only. */
1582 if (link_info.shared)
1583 {
1584 link_info.symbolic = TRUE;
1585 /* Should we free the unused memory? */
1586 link_info.dynamic_list = NULL;
1587 command_line.dynamic_list = dynamic_list_unset;
1588 }
1589 break;
1590 case symbolic_functions:
1591 /* -Bsymbolic-functions is for shared library only. */
1592 if (link_info.shared)
1593 command_line.dynamic_list = dynamic_list_data;
1594 break;
1595 }
1596
1597 switch (command_line.dynamic_list)
1598 {
1599 case dynamic_list_unset:
1600 break;
1601 case dynamic_list_data:
1602 link_info.dynamic_data = TRUE;
1603 case dynamic_list:
1604 link_info.dynamic = TRUE;
1605 break;
1606 }
1607
1608 if (! link_info.shared)
1609 {
1610 if (command_line.filter_shlib)
1611 einfo (_("%P%F: -F may not be used without -shared\n"));
1612 if (command_line.auxiliary_filters)
1613 einfo (_("%P%F: -f may not be used without -shared\n"));
1614 }
1615
1616 if (! link_info.shared || link_info.pie)
1617 link_info.executable = TRUE;
1618
1619 /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
1620 don't see how else this can be handled, since in this case we
1621 must preserve all externally visible symbols. */
1622 if (link_info.relocatable && link_info.strip == strip_all)
1623 {
1624 link_info.strip = strip_debugger;
1625 if (link_info.discard == discard_sec_merge)
1626 link_info.discard = discard_all;
1627 }
1628 }
1629
1630 /* Add the (colon-separated) elements of DIRLIST_PTR to the
1631 library search path. */
1632
1633 static void
1634 set_default_dirlist (char *dirlist_ptr)
1635 {
1636 char *p;
1637
1638 while (1)
1639 {
1640 p = strchr (dirlist_ptr, PATH_SEPARATOR);
1641 if (p != NULL)
1642 *p = '\0';
1643 if (*dirlist_ptr != '\0')
1644 ldfile_add_library_path (dirlist_ptr, TRUE);
1645 if (p == NULL)
1646 break;
1647 dirlist_ptr = p + 1;
1648 }
1649 }
1650
1651 static void
1652 set_section_start (char *sect, char *valstr)
1653 {
1654 const char *end;
1655 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1656 if (*end)
1657 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1658 lang_section_start (sect, exp_intop (val), NULL);
1659 }
1660
1661 static void
1662 set_segment_start (const char *section, char *valstr)
1663 {
1664 const char *name;
1665 const char *end;
1666 segment_type *seg;
1667
1668 bfd_vma val = bfd_scan_vma (valstr, &end, 16);
1669 if (*end)
1670 einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
1671 /* If we already have an entry for this segment, update the existing
1672 value. */
1673 name = section + 1;
1674 for (seg = segments; seg; seg = seg->next)
1675 if (strcmp (seg->name, name) == 0)
1676 {
1677 seg->value = val;
1678 return;
1679 }
1680 /* There was no existing value so we must create a new segment
1681 entry. */
1682 seg = (segment_type *) stat_alloc (sizeof (*seg));
1683 seg->name = name;
1684 seg->value = val;
1685 seg->used = FALSE;
1686 /* Add it to the linked list of segments. */
1687 seg->next = segments;
1688 segments = seg;
1689 /* Historically, -Ttext and friends set the base address of a
1690 particular section. For backwards compatibility, we still do
1691 that. If a SEGMENT_START directive is seen, the section address
1692 assignment will be disabled. */
1693 lang_section_start (section, exp_intop (val), seg);
1694 }
1695
1696 \f
1697 /* Print help messages for the options. */
1698
1699 static void
1700 help (void)
1701 {
1702 unsigned i;
1703 const char **targets, **pp;
1704 int len;
1705
1706 printf (_("Usage: %s [options] file...\n"), program_name);
1707
1708 printf (_("Options:\n"));
1709 for (i = 0; i < OPTION_COUNT; i++)
1710 {
1711 if (ld_options[i].doc != NULL)
1712 {
1713 bfd_boolean comma;
1714 unsigned j;
1715
1716 printf (" ");
1717
1718 comma = FALSE;
1719 len = 2;
1720
1721 j = i;
1722 do
1723 {
1724 if (ld_options[j].shortopt != '\0'
1725 && ld_options[j].control != NO_HELP)
1726 {
1727 printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
1728 len += (comma ? 2 : 0) + 2;
1729 if (ld_options[j].arg != NULL)
1730 {
1731 if (ld_options[j].opt.has_arg != optional_argument)
1732 {
1733 printf (" ");
1734 ++len;
1735 }
1736 printf ("%s", _(ld_options[j].arg));
1737 len += strlen (_(ld_options[j].arg));
1738 }
1739 comma = TRUE;
1740 }
1741 ++j;
1742 }
1743 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1744
1745 j = i;
1746 do
1747 {
1748 if (ld_options[j].opt.name != NULL
1749 && ld_options[j].control != NO_HELP)
1750 {
1751 int two_dashes =
1752 (ld_options[j].control == TWO_DASHES
1753 || ld_options[j].control == EXACTLY_TWO_DASHES);
1754
1755 printf ("%s-%s%s",
1756 comma ? ", " : "",
1757 two_dashes ? "-" : "",
1758 ld_options[j].opt.name);
1759 len += ((comma ? 2 : 0)
1760 + 1
1761 + (two_dashes ? 1 : 0)
1762 + strlen (ld_options[j].opt.name));
1763 if (ld_options[j].arg != NULL)
1764 {
1765 printf (" %s", _(ld_options[j].arg));
1766 len += 1 + strlen (_(ld_options[j].arg));
1767 }
1768 comma = TRUE;
1769 }
1770 ++j;
1771 }
1772 while (j < OPTION_COUNT && ld_options[j].doc == NULL);
1773
1774 if (len >= 30)
1775 {
1776 printf ("\n");
1777 len = 0;
1778 }
1779
1780 for (; len < 30; len++)
1781 putchar (' ');
1782
1783 printf ("%s\n", _(ld_options[i].doc));
1784 }
1785 }
1786 printf (_(" @FILE"));
1787 for (len = strlen (" @FILE"); len < 30; len++)
1788 putchar (' ');
1789 printf (_("Read options from FILE\n"));
1790
1791 /* Note: Various tools (such as libtool) depend upon the
1792 format of the listings below - do not change them. */
1793 /* xgettext:c-format */
1794 printf (_("%s: supported targets:"), program_name);
1795 targets = bfd_target_list ();
1796 for (pp = targets; *pp != NULL; pp++)
1797 printf (" %s", *pp);
1798 free (targets);
1799 printf ("\n");
1800
1801 /* xgettext:c-format */
1802 printf (_("%s: supported emulations: "), program_name);
1803 ldemul_list_emulations (stdout);
1804 printf ("\n");
1805
1806 /* xgettext:c-format */
1807 printf (_("%s: emulation specific options:\n"), program_name);
1808 ldemul_list_emulation_options (stdout);
1809 printf ("\n");
1810
1811 if (REPORT_BUGS_TO[0])
1812 printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
1813 }
git-cvsimport of binutils cvsroot